diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2012-10-06 03:09:16 +0900 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-10-06 03:09:16 +0900 |
| commit | 11126c611e10abb18b6f1ed0300c0548c3906b54 (patch) | |
| tree | 246227ad730c1e68f5a9c03db57cd4592abe7687 /drivers | |
| parent | 67966e088b0c7dc926f4ce19565ebf208e18d058 (diff) | |
| parent | 33e2a4227ddff7c18921ac175fae3ab0e3ff8a76 (diff) | |
Merge branch 'akpm' (Andrew's patch-bomb)
Merge misc patches from Andrew Morton:
"The MM tree is rather stuck while I wait to find out what the heck is
happening with sched/numa. Probably I'll need to route around all the
code which was added to -next, sigh.
So this is "everything else", or at least most of it - other small
bits are still awaiting resolutions of various kinds."
* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (180 commits)
lib/decompress.c add __init to decompress_method and data
kernel/resource.c: fix stack overflow in __reserve_region_with_split()
omfs: convert to use beXX_add_cpu()
taskstats: cgroupstats_user_cmd() may leak on error
aoe: update aoe-internal version number to 50
aoe: update documentation to better reflect aoe-plus-udev usage
aoe: remove unused code
aoe: make dynamic block minor numbers the default
aoe: update and specify AoE address guards and error messages
aoe: retain static block device numbers for backwards compatibility
aoe: support more AoE addresses with dynamic block device minor numbers
aoe: update documentation with new URL and VM settings reference
aoe: update copyright year in touched files
aoe: update internal version number to 49
aoe: remove unused code and add cosmetic improvements
aoe: increase net_device reference count while using it
aoe: associate frames with the AoE storage target
aoe: disallow unsupported AoE minor addresses
aoe: do revalidation steps in order
aoe: failover remote interface based on aoe_deadsecs parameter
...
Diffstat (limited to 'drivers')
134 files changed, 4741 insertions, 1342 deletions
diff --git a/drivers/atm/eni.c b/drivers/atm/eni.c index 2059ee460b0..81e44f7b0ab 100644 --- a/drivers/atm/eni.c +++ b/drivers/atm/eni.c @@ -1567,7 +1567,7 @@ tx_complete++; /*--------------------------------- entries ---------------------------------*/ -static const char *media_name[] __devinitdata = { +static char * const media_name[] __devinitconst = { "MMF", "SMF", "MMF", "03?", /* 0- 3 */ "UTP", "05?", "06?", "07?", /* 4- 7 */ "TAXI","09?", "10?", "11?", /* 8-11 */ diff --git a/drivers/block/aoe/aoe.h b/drivers/block/aoe/aoe.h index db195abad69..d2ed7f18d1a 100644 --- a/drivers/block/aoe/aoe.h +++ b/drivers/block/aoe/aoe.h @@ -1,5 +1,5 @@ -/* Copyright (c) 2007 Coraid, Inc. See COPYING for GPL terms. */ -#define VERSION "47" +/* Copyright (c) 2012 Coraid, Inc. See COPYING for GPL terms. */ +#define VERSION "50" #define AOE_MAJOR 152 #define DEVICE_NAME "aoe" @@ -10,9 +10,6 @@ #define AOE_PARTITIONS (16) #endif -#define SYSMINOR(aoemajor, aoeminor) ((aoemajor) * NPERSHELF + (aoeminor)) -#define AOEMAJOR(sysminor) ((sysminor) / NPERSHELF) -#define AOEMINOR(sysminor) ((sysminor) % NPERSHELF) #define WHITESPACE " \t\v\f\n" enum { @@ -75,72 +72,67 @@ enum { DEVFL_UP = 1, /* device is installed in system and ready for AoE->ATA commands */ DEVFL_TKILL = (1<<1), /* flag for timer to know when to kill self */ DEVFL_EXT = (1<<2), /* device accepts lba48 commands */ - DEVFL_CLOSEWAIT = (1<<3), /* device is waiting for all closes to revalidate */ - DEVFL_GDALLOC = (1<<4), /* need to alloc gendisk */ - DEVFL_KICKME = (1<<5), /* slow polling network card catch */ - DEVFL_NEWSIZE = (1<<6), /* need to update dev size in block layer */ - - BUFFL_FAIL = 1, + DEVFL_GDALLOC = (1<<3), /* need to alloc gendisk */ + DEVFL_KICKME = (1<<4), /* slow polling network card catch */ + DEVFL_NEWSIZE = (1<<5), /* need to update dev size in block layer */ }; enum { DEFAULTBCNT = 2 * 512, /* 2 sectors */ - NPERSHELF = 16, /* number of slots per shelf address */ - FREETAG = -1, MIN_BUFS = 16, NTARGETS = 8, NAOEIFS = 8, - NSKBPOOLMAX = 128, + NSKBPOOLMAX = 256, + NFACTIVE = 61, TIMERTICK = HZ / 10, MINTIMER = HZ >> 2, MAXTIMER = HZ << 1, - HELPWAIT = 20, }; struct buf { - struct list_head bufs; - ulong stime; /* for disk stats */ - ulong flags; ulong nframesout; ulong resid; ulong bv_resid; - ulong bv_off; sector_t sector; struct bio *bio; struct bio_vec *bv; + struct request *rq; }; struct frame { - int tag; + struct list_head head; + u32 tag; ulong waited; + struct aoetgt *t; /* parent target I belong to */ + sector_t lba; + struct sk_buff *skb; /* command skb freed on module exit */ + struct sk_buff *r_skb; /* response skb for async processing */ struct buf *buf; - char *bufaddr; + struct bio_vec *bv; ulong bcnt; - sector_t lba; - struct sk_buff *skb; + ulong bv_off; }; struct aoeif { struct net_device *nd; - unsigned char lost; - unsigned char lostjumbo; - ushort maxbcnt; + ulong lost; + int bcnt; }; struct aoetgt { unsigned char addr[6]; ushort nframes; - struct frame *frames; + struct aoedev *d; /* parent device I belong to */ + struct list_head ffree; /* list of free frames */ struct aoeif ifs[NAOEIFS]; struct aoeif *ifp; /* current aoeif in use */ ushort nout; ushort maxout; - u16 lasttag; /* last tag sent */ - u16 useme; + ulong falloc; ulong lastwadj; /* last window adjustment */ + int minbcnt; int wpkts, rpkts; - int dataref; }; struct aoedev { @@ -153,6 +145,9 @@ struct aoedev { u16 rttavg; /* round trip average of requests/responses */ u16 mintimer; u16 fw_ver; /* version of blade's firmware */ + u16 lasttag; /* last tag sent */ + u16 useme; + ulong ref; struct work_struct work;/* disk create work struct */ struct gendisk *gd; struct request_queue *blkq; @@ -160,16 +155,31 @@ struct aoedev { sector_t ssize; struct timer_list timer; spinlock_t lock; - struct sk_buff_head sendq; struct sk_buff_head skbpool; mempool_t *bufpool; /* for deadlock-free Buf allocation */ - struct list_head bufq; /* queue of bios to work on */ - struct buf *inprocess; /* the one we're currently working on */ + struct { /* pointers to work in progress */ + struct buf *buf; + struct bio *nxbio; + struct request *rq; + } ip; + ulong maxbcnt; + struct list_head factive[NFACTIVE]; /* hash of active frames */ struct aoetgt *targets[NTARGETS]; struct aoetgt **tgt; /* target in use when working */ - struct aoetgt **htgt; /* target needing rexmit assistance */ + struct aoetgt *htgt; /* target needing rexmit assistance */ + ulong ntargets; + ulong kicked; }; +/* kthread tracking */ +struct ktstate { + struct completion rendez; + struct task_struct *task; + wait_queue_head_t *waitq; + int (*fn) (void); + char *name; + spinlock_t *lock; +}; int aoeblk_init(void); void aoeblk_exit(void); @@ -182,22 +192,29 @@ void aoechr_error(char *); void aoecmd_work(struct aoedev *d); void aoecmd_cfg(ushort aoemajor, unsigned char aoeminor); -void aoecmd_ata_rsp(struct sk_buff *); +struct sk_buff *aoecmd_ata_rsp(struct sk_buff *); void aoecmd_cfg_rsp(struct sk_buff *); void aoecmd_sleepwork(struct work_struct *); void aoecmd_cleanslate(struct aoedev *); +void aoecmd_exit(void); +int aoecmd_init(void); struct sk_buff *aoecmd_ata_id(struct aoedev *); +void aoe_freetframe(struct frame *); +void aoe_flush_iocq(void); +void aoe_end_request(struct aoedev *, struct request *, int); +int aoe_ktstart(struct ktstate *k); +void aoe_ktstop(struct ktstate *k); int aoedev_init(void); void aoedev_exit(void); -struct aoedev *aoedev_by_aoeaddr(int maj, int min); -struct aoedev *aoedev_by_sysminor_m(ulong sysminor); +struct aoedev *aoedev_by_aoeaddr(ulong maj, int min, int do_alloc); void aoedev_downdev(struct aoedev *d); int aoedev_flush(const char __user *str, size_t size); +void aoe_failbuf(struct aoedev *, struct buf *); +void aoedev_put(struct aoedev *); int aoenet_init(void); void aoenet_exit(void); void aoenet_xmit(struct sk_buff_head *); int is_aoe_netif(struct net_device *ifp); int set_aoe_iflist(const char __user *str, size_t size); - diff --git a/drivers/block/aoe/aoeblk.c b/drivers/block/aoe/aoeblk.c index 321de7b6c44..00dfc5008ad 100644 --- a/drivers/block/aoe/aoeblk.c +++ b/drivers/block/aoe/aoeblk.c @@ -1,4 +1,4 @@ -/* Copyright (c) 2007 Coraid, Inc. See COPYING for GPL terms. */ +/* Copyright (c) 2012 Coraid, Inc. See COPYING for GPL terms. */ /* * aoeblk.c * block device routines @@ -161,68 +161,22 @@ aoeblk_release(struct gendisk *disk, fmode_t mode) } static void -aoeblk_make_request(struct request_queue *q, struct bio *bio) +aoeblk_request(struct request_queue *q) { - struct sk_buff_head queue; struct aoedev *d; - struct buf *buf; - ulong flags; - - blk_queue_bounce(q, &bio); - - if (bio == NULL) { - printk(KERN_ERR "aoe: bio is NULL\n"); - BUG(); - return; - } - d = bio->bi_bdev->bd_disk->private_data; - if (d == NULL) { - printk(KERN_ERR "aoe: bd_disk->private_data is NULL\n"); - BUG(); - bio_endio(bio, -ENXIO); - return; - } else if (bio->bi_io_vec == NULL) { - printk(KERN_ERR "aoe: bi_io_vec is NULL\n"); - BUG(); - bio_endio(bio, -ENXIO); - return; - } - buf = mempool_alloc(d->bufpool, GFP_NOIO); - if (buf == NULL) { - printk(KERN_INFO "aoe: buf allocation failure\n"); - bio_endio(bio, -ENOMEM); - return; - } - memset(buf, 0, sizeof(*buf)); - INIT_LIST_HEAD(&buf->bufs); - buf->stime = jiffies; - buf->bio = bio; - buf->resid = bio->bi_size; - buf->sector = bio->bi_sector; - buf->bv = &bio->bi_io_vec[bio->bi_idx]; - buf->bv_resid = buf->bv->bv_len; - WARN_ON(buf->bv_resid == 0); - buf->bv_off = buf->bv->bv_offset; - - spin_lock_irqsave(&d->lock, flags); + struct request *rq; + d = q->queuedata; if ((d->flags & DEVFL_UP) == 0) { pr_info_ratelimited("aoe: device %ld.%d is not up\n", d->aoemajor, d->aoeminor); - spin_unlock_irqrestore(&d->lock, flags); - mempool_free(buf, d->bufpool); - bio_endio(bio, -ENXIO); + while ((rq = blk_peek_request(q))) { + blk_start_request(rq); + aoe_end_request(d, rq, 1); + } return; } - - list_add_tail(&buf->bufs, &d->bufq); - aoecmd_work(d); - __skb_queue_head_init(&queue); - skb_queue_splice_init(&d->sendq, &queue); - - spin_unlock_irqrestore(&d->lock, flags); - aoenet_xmit(&queue); } static int @@ -254,41 +208,54 @@ aoeblk_gdalloc(void *vp) { struct aoedev *d = vp; struct gendisk *gd; + mempool_t *mp; + struct request_queue *q; + enum { KB = 1024, MB = KB * KB, READ_AHEAD = 2 * MB, }; ulong flags; gd = alloc_disk(AOE_PARTITIONS); if (gd == NULL) { - printk(KERN_ERR - "aoe: cannot allocate disk structure for %ld.%d\n", + pr_err("aoe: cannot allocate disk structure for %ld.%d\n", d->aoemajor, d->aoeminor); goto err; } - d->bufpool = mempool_create_slab_pool(MIN_BUFS, buf_pool_cache); - if (d->bufpool == NULL) { + mp = mempool_create(MIN_BUFS, mempool_alloc_slab, mempool_free_slab, + buf_pool_cache); + if (mp == NULL) { printk(KERN_ERR "aoe: cannot allocate bufpool for %ld.%d\n", d->aoemajor, d->aoeminor); goto err_disk; } + q = blk_init_queue(aoeblk_request, &d->lock); + if (q == NULL) { + pr_err("aoe: cannot allocate block queue for %ld.%d\n", + d->aoemajor, d->aoeminor); + mempool_destroy(mp); + goto err_disk; + } d->blkq = blk_alloc_queue(GFP_KERNEL); if (!d->blkq) goto err_mempool; - blk_queue_make_request(d->blkq, aoeblk_make_request); d->blkq->backing_dev_info.name = "aoe"; if (bdi_init(&d->blkq->backing_dev_info)) goto err_blkq; spin_lock_irqsave(&d->lock, flags); + blk_queue_max_hw_sectors(d->blkq, BLK_DEF_MAX_SECTORS); + q->backing_dev_info.ra_pages = READ_AHEAD / PAGE_CACHE_SIZE; + d->bufpool = mp; + d->blkq = gd->queue = q; + q->queuedata = d; + d->gd = gd; gd->major = AOE_MAJOR; - gd->first_minor = d->sysminor * AOE_PARTITIONS; + gd->first_minor = d->sysminor; gd->fops = &aoe_bdops; gd->private_data = d; set_capacity(gd, d->ssize); snprintf(gd->disk_name, sizeof gd->disk_name, "etherd/e%ld.%d", d->aoemajor, d->aoeminor); - gd->queue = d->blkq; - d->gd = gd; d->flags &= ~DEVFL_GDALLOC; d->flags |= DEVFL_UP; diff --git a/drivers/block/aoe/aoechr.c b/drivers/block/aoe/aoechr.c index e86d2062a16..ed57a890c64 100644 --- a/drivers/block/aoe/aoechr.c +++ b/drivers/block/aoe/aoechr.c @@ -1,4 +1,4 @@ -/* Copyright (c) 2007 Coraid, Inc. See COPYING for GPL terms. */ +/* Copyright (c) 2012 Coraid, Inc. See COPYING for GPL terms. */ /* * aoechr.c * AoE character device driver @@ -86,34 +86,34 @@ revalidate(const char __user *str, size_t size) if (copy_from_user(buf, str, size)) return -EFAULT; - /* should be e%d.%d format */ n = sscanf(buf, "e%d.%d", &major, &minor); if (n != 2) { - printk(KERN_ERR "aoe: invalid device specification\n"); + pr_err("aoe: invalid device specification %s\n", buf); return -EINVAL; } - d = aoedev_by_aoeaddr(major, minor); + d = aoedev_by_aoeaddr(major, minor, 0); if (!d) return -EINVAL; spin_lock_irqsave(&d->lock, flags); aoecmd_cleanslate(d); + aoecmd_cfg(major, minor); loop: skb = aoecmd_ata_id(d); spin_unlock_irqrestore(&d->lock, flags); /* try again if we are able to sleep a bit, * otherwise give up this revalidation */ - if (!skb && !msleep_interruptible(200)) { + if (!skb && !msleep_interruptible(250)) { spin_lock_irqsave(&d->lock, flags); goto loop; } + aoedev_put(d); if (skb) { struct sk_buff_head queue; __skb_queue_head_init(&queue); __skb_queue_tail(&queue, skb); aoenet_xmit(&queue); } - aoecmd_cfg(major, minor); return 0; } @@ -174,6 +174,7 @@ aoechr_write(struct file *filp, const char __user *buf, size_t cnt, loff_t *offp break; case MINOR_FLUSH: ret = aoedev_flush(buf, cnt); + break; } if (ret == 0) ret = cnt; diff --git a/drivers/block/aoe/aoecmd.c b/drivers/block/aoe/aoecmd.c index 887f68f6d79..3804a0af3ef 100644 --- a/drivers/block/aoe/aoecmd.c +++ b/drivers/block/aoe/aoecmd.c @@ -1,4 +1,4 @@ -/* Copyright (c) 2007 Coraid, Inc. See COPYING for GPL terms. */ +/* Copyright (c) 2012 Coraid, Inc. See COPYING for GPL terms. */ /* * aoecmd.c * Filesystem request handling methods @@ -12,10 +12,19 @@ #include <linux/netdevice.h> #include <linux/genhd.h> #include <linux/moduleparam.h> +#include <linux/workqueue.h> +#include <linux/kthread.h> #include <net/net_namespace.h> #include <asm/unaligned.h> +#include <linux/uio.h> #include "aoe.h" +#define MAXIOC (8192) /* default meant to avoid most soft lockups */ + +static void ktcomplete(struct frame *, struct sk_buff *); + +static struct buf *nextbuf(struct aoedev *); + static int aoe_deadsecs = 60 * 3; module_param(aoe_deadsecs, int, 0644); MODULE_PARM_DESC(aoe_deadsecs, "After aoe_deadsecs seconds, give up and fail dev."); @@ -25,6 +34,15 @@ module_param(aoe_maxout, int, 0644); MODULE_PARM_DESC(aoe_maxout, "Only aoe_maxout outstanding packets for every MAC on eX.Y."); +static wait_queue_head_t ktiowq; +static struct ktstate kts; + +/* io completion queue */ +static struct { + struct list_head head; + spinlock_t lock; +} iocq; + static struct sk_buff * new_skb(ulong len) { @@ -41,15 +59,21 @@ new_skb(ulong len) } static struct frame * -getframe(struct aoetgt *t, int tag) +getframe(struct aoedev *d, u32 tag) { - struct frame *f, *e; + struct frame *f; + struct list_head *head, *pos, *nx; + u32 n; - f = t->frames; - e = f + t->nframes; - for (; f<e; f++) - if (f->tag == tag) + n = tag % NFACTIVE; + head = &d->factive[n]; + list_for_each_safe(pos, nx, head) { + f = list_entry(pos, struct frame, head); + if (f->tag == tag) { + list_del(pos); return f; + } + } return NULL; } @@ -59,18 +83,18 @@ getframe(struct aoetgt *t, int tag) * This driver reserves tag -1 to mean "unused frame." */ static int -newtag(struct aoetgt *t) +newtag(struct aoedev *d) { register ulong n; n = jiffies & 0xffff; - return n |= (++t->lasttag & 0x7fff) << 16; + return n |= (++d->lasttag & 0x7fff) << 16; } -static int +static u32 aoehdr_atainit(struct aoedev *d, struct aoetgt *t, struct aoe_hdr *h) { - u32 host_tag = newtag(t); + u32 host_tag = newtag(d); memcpy(h->src, t->ifp->nd->dev_addr, sizeof h->src); memcpy(h->dst, t->addr, sizeof h->dst); @@ -95,16 +119,18 @@ put_lba(struct aoe_atahdr *ah, sector_t lba) ah->lba5 = lba >>= 8; } -static void +static struct aoeif * ifrotate(struct aoetgt *t) { - t->ifp++; - if (t->ifp >= &t->ifs[NAOEIFS] || t->ifp->nd == NULL) - t->ifp = t->ifs; - if (t->ifp->nd == NULL) { - printk(KERN_INFO "aoe: no interface to rotate to\n"); - BUG(); - } + struct aoeif *ifp; + + ifp = t->ifp; + ifp++; + if (ifp >= &t->ifs[NAOEIFS] || ifp->nd == NULL) + ifp = t->ifs; + if (ifp->nd == NULL) + return NULL; + return t->ifp = ifp; } static void @@ -129,78 +155,128 @@ skb_pool_get(struct aoedev *d) return NULL; } -/* freeframe is where we do our load balancing so it's a little hairy. */ +void +aoe_freetframe(struct frame *f) +{ + struct aoetgt *t; + + t = f->t; + f->buf = NULL; + f->bv = NULL; + f->r_skb = NULL; + list_add(&f->head, &t->ffree); +} + static struct frame * -freeframe(struct aoedev *d) +newtframe(struct aoedev *d, struct aoetgt *t) { - struct frame *f, *e, *rf; - struct aoetgt **t; + struct frame *f; struct sk_buff *skb; + struct list_head *pos; + + if (list_empty(&t->ffree)) { + if (t->falloc >= NSKBPOOLMAX*2) + return NULL; + f = kcalloc(1, sizeof(*f), GFP_ATOMIC); + if (f == NULL) + return NULL; + t->falloc++; + f->t = t; + } else { + pos = t->ffree.next; + list_del(pos); + f = list_entry(pos, struct frame, head); + } + + skb = f->skb; + if (skb == NULL) { + f->skb = skb = new_skb(ETH_ZLEN); + if (!skb) { +bail: aoe_freetframe(f); + return NULL; + } + } + + if (atomic_read(&skb_shinfo(skb)->dataref) != 1) { + skb = skb_pool_get(d); + if (skb == NULL) + goto bail; + skb_pool_put(d, f->skb); + f->skb = skb; + } + + skb->truesize -= skb->data_len; + skb_shinfo(skb)->nr_frags = skb->data_len = 0; + skb_trim(skb, 0); + return f; +} + +static struct frame * +newframe(struct aoedev *d) +{ + struct frame *f; + struct aoetgt *t, **tt; + int totout = 0; if (d->targets[0] == NULL) { /* shouldn't happen, but I'm paranoid */ printk(KERN_ERR "aoe: NULL TARGETS!\n"); return NULL; } - t = d->tgt; - t++; - if (t >= &d->targets[NTARGETS] || !*t) - t = d->targets; + tt = d->tgt; /* last used target */ for (;;) { - if ((*t)->nout < (*t)->maxout + tt++; + if (tt >= &d->targets[NTARGETS] || !*tt) + tt = d->targets; + t = *tt; + totout += t->nout; + if (t->nout < t->maxout && t != d->htgt - && (*t)->ifp->nd) { - rf = NULL; - f = (*t)->frames; - e = f + (*t)->nframes; - for (; f < e; f++) { - if (f->tag != FREETAG) - continue; - skb = f->skb; - if (!skb - && !(f->skb = skb = new_skb(ETH_ZLEN))) - continue; - if (atomic_read(&skb_shinfo(skb)->dataref) - != 1) { - if (!rf) - rf = f; - continue; - } -gotone: skb_shinfo(skb)->nr_frags = skb->data_len = 0; - skb_trim(skb, 0); - d->tgt = t; - ifrotate(*t); + && t->ifp->nd) { + f = newtframe(d, t); + if (f) { + ifrotate(t); + d->tgt = tt; return f; } - /* Work can be done, but the network layer is - holding our precious packets. Try to grab - one from the pool. */ - f = rf; - if (f == NULL) { /* more paranoia */ - printk(KERN_ERR - "aoe: freeframe: %s.\n", - "unexpected null rf"); - d->flags |= DEVFL_KICKME; - return NULL; - } - skb = skb_pool_get(d); - if (skb) { - skb_pool_put(d, f->skb); - f->skb = skb; - goto gotone; - } - (*t)->dataref++; - if ((*t)->nout == 0) - d->flags |= DEVFL_KICKME; } - if (t == d->tgt) /* we've looped and found nada */ + if (tt == d->tgt) /* we've looped and found nada */ break; - t++; - if (t >= &d->targets[NTARGETS] || !*t) - t = d->targets; + } + if (totout == 0) { + d->kicked++; + d->flags |= DEVFL_KICKME; } return NULL; } +static void +skb_fillup(struct sk_buff *skb, struct bio_vec *bv, ulong off, ulong cnt) +{ + int frag = 0; + ulong fcnt; +loop: + fcnt = bv->bv_len - (off - bv->bv_offset); + if (fcnt > cnt) + fcnt = cnt; + skb_fill_page_desc(skb, frag++, bv->bv_page, off, fcnt); + cnt -= fcnt; + if (cnt <= 0) + return; + bv++; + off = bv->bv_offset; + goto loop; +} + +static void +fhash(struct frame *f) +{ + struct aoedev *d = f->t->d; + u32 n; + + n = f->tag % NFACTIVE; + list_add_tail(&f->head, &d->factive[n]); +} + static int aoecmd_ata_rw(struct aoedev *d) { @@ -208,26 +284,47 @@ aoecmd_ata_rw(struct aoedev *d) struct aoe_hdr *h; struct aoe_atahdr *ah; struct buf *buf; - struct bio_vec *bv; struct aoetgt *t; struct sk_buff *skb; - ulong bcnt; + struct sk_buff_head queue; + ulong bcnt, fbcnt; char writebit, extbit; writebit = 0x10; extbit = 0x4; - f = freeframe(d); + buf = nextbuf(d); + if (buf == NULL) + return 0; + f = newframe(d); if (f == NULL) return 0; t = *d->tgt; - buf = d->inprocess; - bv = buf->bv; - bcnt = t->ifp->maxbcnt; + bcnt = d->maxbcnt; if (bcnt == 0) bcnt = DEFAULTBCNT; - if (bcnt > buf->bv_resid) - bcnt = buf->bv_resid; + if (bcnt > buf->resid) + bcnt = buf->resid; + fbcnt = bcnt; + f->bv = buf->bv; + f->bv_off = f->bv->bv_offset + (f->bv->bv_len - buf->bv_resid); + do { + if (fbcnt < buf->bv_resid) { + buf->bv_resid -= fbcnt; + buf->resid -= fbcnt; + break; + } + fbcnt -= buf->bv_resid; + buf->resid -= buf->bv_resid; + if (buf->resid == 0) { + d->ip.buf = NULL; + break; + } + buf->bv++; + buf->bv_resid = buf->bv->bv_len; + WARN_ON(buf->bv_resid == 0); + } while (fbcnt); + /* initialize the headers & frame */ skb = f->skb; h = (struct aoe_hdr *) skb_mac_header(skb); @@ -235,10 +332,10 @@ aoecmd_ata_rw(struct aoedev *d) skb_put(skb, sizeof *h + sizeof *ah); memset(h, 0, skb->len); f->tag = aoehdr_atainit(d, t, h); + fhash(f); t->nout++; f->waited = 0; f->buf = buf; - f->bufaddr = page_address(bv->bv_page) + buf->bv_off; f->bcnt = bcnt; f->lba = buf->sector; @@ -253,10 +350,11 @@ aoecmd_ata_rw(struct aoedev *d) ah->lba3 |= 0xe0; /* LBA bit + obsolete 0xa0 */ } if (bio_data_dir(buf->bio) == WRITE) { - skb_fill_page_desc(skb, 0, bv->bv_page, buf->bv_off, bcnt); + skb_fillup(skb, f->bv, f->bv_off, bcnt); ah->aflags |= AOEAFL_WRITE; skb->len += bcnt; skb->data_len = bcnt; + skb->truesize += bcnt; t->wpkts++; } else { t->rpkts++; @@ -267,23 +365,15 @@ aoecmd_ata_rw(struct aoedev *d) /* mark all tracking fields and load out */ buf->nframesout += 1; - buf->bv_off += bcnt; - buf->bv_resid -= bcnt; - buf->resid -= bcnt; buf->sector += bcnt >> 9; - if (buf->resid == 0) { - d->inprocess = NULL; - } else if (buf->bv_resid == 0) { - buf->bv = ++bv; - buf->bv_resid = bv->bv_len; - WARN_ON(buf->bv_resid == 0); - buf->bv_off = bv->bv_offset; - } skb->dev = t->ifp->nd; skb = skb_clone(skb, GFP_ATOMIC); - if (skb) - __skb_queue_tail(&d->sendq, skb); + if (skb) { + __skb_queue_head_init(&queue); + __skb_queue_tail(&queue, skb); + aoenet_xmit(&queue); + } return 1; } @@ -330,17 +420,25 @@ cont: } static void -resend(struct aoedev *d, struct aoetgt *t, struct frame *f) +resend(struct aoedev *d, struct frame *f) { struct sk_buff *skb; + struct sk_buff_head queue; struct aoe_hdr *h; struct aoe_atahdr *ah; + struct aoetgt *t; char buf[128]; u32 n; - ifrotate(t); - n = newtag(t); + t = f->t; + n = newtag(d); skb = f->skb; + if (ifrotate(t) == NULL) { + /* probably can't happen, but set it up to fail anyway */ + pr_info("aoe: resend: no interfaces to rotate to.\n"); + ktcomplete(f, NULL); + return; + } h = (struct aoe_hdr *) skb_mac_header(skb); ah = (struct aoe_atahdr *) (h+1); @@ -351,39 +449,22 @@ resend(struct aoedev *d, struct aoetgt *t, struct frame *f) aoechr_error(buf); f->tag = n; + fhash(f); h->tag = cpu_to_be32(n); memcpy(h->dst, t->addr, sizeof h->dst); memcpy(h->src, t->ifp->nd->dev_addr, sizeof h->src); - switch (ah->cmdstat) { - default: - break; - case ATA_CMD_PIO_READ: - case ATA_CMD_PIO_READ_EXT: - case ATA_CMD_PIO_WRITE: - case ATA_CMD_PIO_WRITE_EXT: - put_lba(ah, f->lba); - - n = f->bcnt; - if (n > DEFAULTBCNT) - n = DEFAULTBCNT; - ah->scnt = n >> 9; - if (ah->aflags & AOEAFL_WRITE) { - skb_fill_page_desc(skb, 0, virt_to_page(f->bufaddr), - offset_in_page(f->bufaddr), n); - skb->len = sizeof *h + sizeof *ah + n; - skb->data_len = n; - } - } skb->dev = t->ifp->nd; skb = skb_clone(skb, GFP_ATOMIC); if (skb == NULL) return; - __skb_queue_tail(&d->sendq, skb); + __skb_queue_head_init(&queue); + __skb_queue_tail(&queue, skb); + aoenet_xmit(&queue); } static int -tsince(int tag) +tsince(u32 tag) { int n; @@ -407,58 +488,65 @@ getif(struct aoetgt *t, struct net_device *nd) return NULL; } -static struct aoeif * -addif(struct aoetgt *t, struct net_device *nd) -{ - struct aoeif *p; - - p = getif(t, NULL); - if (!p) - return NULL; - p->nd = nd; - p->maxbcnt = DEFAULTBCNT; - p->lost = 0; - p->lostjumbo = 0; - return p; -} - static void ejectif(struct aoetgt *t, struct aoeif *ifp) { struct aoeif *e; + struct net_device *nd; ulong n; + nd = ifp->nd; e = t->ifs + NAOEIFS - 1; n = (e - ifp) * sizeof *ifp; memmove(ifp, ifp+1, n); e->nd = NULL; + dev_put(nd); } static int sthtith(struct aoedev *d) { - struct frame *f, *e, *nf; + struct frame *f, *nf; + struct list_head *nx, *pos, *head; struct sk_buff *skb; - struct aoetgt *ht = *d->htgt; - - f = ht->frames; - e = f + ht->nframes; - for (; f < e; f++) { - if (f->tag == FREETAG) - continue; - nf = freeframe(d); - if (!nf) - return 0; - skb = nf->skb; - *nf = *f; - f->skb = skb; - f->tag = FREETAG; - nf->waited = 0; - ht->nout--; - (*d->tgt)->nout++; - resend(d, *d->tgt, nf); + struct aoetgt *ht = d->htgt; + int i; + + for (i = 0; i < NFACTIVE; i++) { + head = &d->factive[i]; + list_for_each_safe(pos, nx, head) { + f = list_entry(pos, struct frame, head); + if (f->t != ht) + continue; + + nf = newframe(d); + if (!nf) + return 0; + + /* remove frame from active list */ + list_del(pos); + + /* reassign all pertinent bits to new outbound frame */ + skb = nf->skb; + nf->skb = f->skb; + nf->buf = f->buf; + nf->bcnt = f->bcnt; + nf->lba = f->lba; + nf->bv = f->bv; + nf->bv_off = f->bv_off; + nf->waited = 0; + f->skb = skb; + aoe_freetframe(f); + ht->nout--; + nf->t->nout++; + resend(d, nf); + } } - /* he's clean, he's useless. take away his interfaces */ + /* We've cleaned up the outstanding so take away his + * interfaces so he won't be used. We should remove him from + * the target array here, but cleaning up a target is + * involved. PUNT! + */ memset(ht->ifs, 0, sizeof ht->ifs); d->htgt = NULL; return 1; @@ -477,13 +565,15 @@ ata_scnt(unsigned char *packet) { static void rexmit_timer(ulong vp) { - struct sk_buff_head queue; struct aoedev *d; struct aoetgt *t, **tt, **te; struct aoeif *ifp; - struct frame *f, *e; + struct frame *f; + struct list_head *head, *pos, *nx; + LIST_HEAD(flist); register long timeout; ulong flags, n; + int i; d = (struct aoedev *) vp; @@ -497,58 +587,22 @@ rexmit_timer(ulong vp) spin_unlock_irqrestore(&d->lock, flags); return; } - tt = d->targets; - te = tt + NTARGETS; - for (; tt < te && *tt; tt++) { - t = *tt; - f = t->frames; - e = f + t->nframes; - for (; f < e; f++) { - if (f->tag == FREETAG - || tsince(f->tag) < timeout) - continue; - n = f->waited += timeout; - n /= HZ; - if (n > aoe_deadsecs) { - /* waited too long. device failure. */ - aoedev_downdev(d); - break; - } - - if (n > HELPWAIT /* see if another target can help */ - && (tt != d->targets || d->targets[1])) - d->htgt = tt; - - if (t->nout == t->maxout) { - if (t->maxout > 1) - t->maxout--; - t->lastwadj = jiffies; - } - - ifp = getif(t, f->skb->dev); - if (ifp && ++ifp->lost > (t->nframes << 1) - && (ifp != t->ifs || t->ifs[1].nd)) { - ejectif(t, ifp); - ifp = NULL; - } - if (ata_scnt(skb_mac_header(f->skb)) > DEFAULTBCNT / 512 - && ifp && ++ifp->lostjumbo > (t->nframes << 1) - && ifp->maxbcnt != DEFAULTBCNT) { - printk(KERN_INFO - "aoe: e%ld.%d: " - "too many lost jumbo on " - "%s:%pm - " - "falling back to %d frames.\n", - d->aoemajor, d->aoeminor, - ifp->nd->name, t->addr, - DEFAULTBCNT); - ifp->maxbcnt = 0; - } - resend(d, t, f); + /* collect all frames to rexmit into flist */ + for (i = 0; i < NFACTIVE; i++) { + head = &d->factive[i]; + list_for_each_safe(pos, nx, head) { + f = list_entry(pos, struct frame, head); + if (tsince(f->tag) < timeout) + break; /* end of expired frames */ + /* move to flist for later processing */ + list_move_tail(pos, &flist); } - - /* window check */ + } + /* window check */ + tt = d->targets; + te = tt + d->ntargets; + for (; tt < te && (t = *tt); tt++) { if (t->nout == t->maxout && t->maxout < t->nframes && (jiffies - t->lastwadj)/HZ > 10) { @@ -557,45 +611,173 @@ rexmit_timer(ulong vp) } } - if (!skb_queue_empty(&d->sendq)) { + if (!list_empty(&flist)) { /* retransmissions necessary */ n = d->rttavg <<= 1; if (n > MAXTIMER) d->rttavg = MAXTIMER; } - if (d->flags & DEVFL_KICKME || d->htgt) { - d->flags &= ~DEVFL_KICKME; - aoecmd_work(d); + /* process expired frames */ + while (!list_empty(&flist)) { + pos = flist.next; + f = list_entry(pos, struct frame, head); + n = f->waited += timeout; + n /= HZ; + if (n > aoe_deadsecs) { + /* Waited too long. Device failure. + * Hang all frames on first hash bucket for downdev + * to clean up. + */ + list_splice(&flist, &d->factive[0]); + aoedev_downdev(d); + break; + } + list_del(pos); + + t = f->t; + if (n > aoe_deadsecs/2) + d->htgt = t; /* see if another target can help */ + + if (t->nout == t->maxout) { + if (t->maxout > 1) + t->maxout--; + t->lastwadj = jiffies; + } + + ifp = getif(t, f->skb->dev); + if (ifp && ++ifp->lost > (t->nframes << 1) + && (ifp != t->ifs || t->ifs[1].nd)) { + ejectif(t, ifp); + ifp = NULL; + } + resend(d, f); } - __skb_queue_head_init(&queue); - skb_queue_splice_init(&d->sendq, &queue); + if ((d->flags & DEVFL_KICKME || d->htgt) && d->blkq) { + d->flags &= ~DEVFL_KICKME; + d->blkq->request_fn(d->blkq); + } d->timer.expires = jiffies + TIMERTICK; add_timer(&d->timer); spin_unlock_irqrestore(&d->lock, flags); +} - aoenet_xmit(&queue); +static unsigned long +rqbiocnt(struct request *r) +{ + struct bio *bio; + unsigned long n = 0; + + __rq_for_each_bio(bio, r) + n++; + return n; +} + +/* This can be removed if we are certain that no users of the block + * layer will ever use zero-count pages in bios. Otherwise we have to + * protect against the put_page sometimes done by the network layer. + * + * See http://oss.sgi.com/archives/xfs/2007-01/msg00594.html for + * discussion. + * + * We cannot use get_page in the workaround, because it insists on a + * positive page count as a precondition. So we use _count directly. + */ +static void +bio_pageinc(struct bio *bio) +{ + struct bio_vec *bv; + struct page *page; + int i; + + bio_for_each_segment(bv, bio, i) { + page = bv->bv_page; + /* Non-zero page count for non-head members of + * compound pages is no longer allowed by the kernel, + * but this has never been seen here. + */ + if (unlikely(PageCompound(page))) + if (compound_trans_head(page) != page) { + pr_crit("page tail used for block I/O\n"); + BUG(); + } + atomic_inc(&page->_count); + } +} + +static void +bio_pagedec(struct bio *bio) +{ + struct bio_vec *bv; + int i; + + bio_for_each_segment(bv, bio, i) + atomic_dec(&bv->bv_page->_count); +} + +static void +bufinit(struct buf *buf, struct request *rq, struct bio *bio) +{ + struct bio_vec *bv; + + memset(buf, 0, sizeof(*buf)); + buf->rq = rq; + buf->bio = bio; + buf->resid = bio->bi_size; + buf->sector = bio->bi_sector; + bio_pageinc(bio); + buf->bv = bv = &bio->bi_io_vec[bio->bi_idx]; + buf->bv_resid = bv->bv_len; + WARN_ON(buf->bv_resid == 0); +} + +static struct buf * +nextbuf(struct aoedev *d) +{ + struct request *rq; + struct request_queue *q; + struct buf *buf; + struct bio *bio; + + q = d->blkq; + if (q == NULL) + return NULL; /* initializing */ + if (d->ip.buf) + return d->ip.buf; + rq = d->ip.rq; + if (rq == NULL) { + rq = blk_peek_request(q); + if (rq == NULL) + return NULL; + blk_start_request(rq); + d->ip.rq = rq; + d->ip.nxbio = rq->bio; + rq->special = (void *) rqbiocnt(rq); + } + buf = mempool_alloc(d->bufpool, GFP_ATOMIC); + if (buf == NULL) { + pr_err("aoe: nextbuf: unable to mempool_alloc!\n"); + return NULL; + } + bio = d->ip.nxbio; + bufinit(buf, rq, bio); + bio = bio->bi_next; + d->ip.nxbio = bio; + if (bio == NULL) + d->ip.rq = NULL; + return d->ip.buf = buf; } /* enters with d->lock held */ void aoecmd_work(struct aoedev *d) { - struct buf *buf; -loop: if (d->htgt && !sthtith(d)) return; - if (d->inprocess == NULL) { - if (list_empty(&d->bufq)) - return; - buf = container_of(d->bufq.next, struct buf, bufs); - list_del(d->bufq.next); - d->inprocess = buf; - } - if (aoecmd_ata_rw(d)) - goto loop; + while (aoecmd_ata_rw(d)) + ; } /* this function performs work that has been deferred until sleeping is OK @@ -604,28 +786,25 @@ void aoecmd_sleepwork(struct work_struct *work) { struct aoedev *d = container_of(work, struct aoedev, work); + struct block_device *bd; + u64 ssize; if (d->flags & DEVFL_GDALLOC) aoeblk_gdalloc(d); if (d->flags & DEVFL_NEWSIZE) { - struct block_device *bd; - unsigned long flags; - u64 ssize; - ssize = get_capacity(d->gd); bd = bdget_disk(d->gd, 0); - if (bd) { mutex_lock(&bd->bd_inode->i_mutex); i_size_write(bd->bd_inode, (loff_t)ssize<<9); mutex_unlock(&bd->bd_inode->i_mutex); bdput(bd); } - spin_lock_irqsave(&d->lock, flags); + spin_lock_irq(&d->lock); d->flags |= DEVFL_UP; d->flags &= ~DEVFL_NEWSIZE; - spin_unlock_irqrestore(&d->lock, flags); + spin_unlock_irq(&d->lock); } } @@ -718,163 +897,299 @@ gettgt(struct aoedev *d, char *addr) return NULL; } -static inline void -diskstats(struct gendisk *disk, struct bio *bio, ulong duration, sector_t sector) +static void +bvcpy(struct bio_vec *bv, ulong off, struct sk_buff *skb, long cnt) +{ + ulong fcnt; + char *p; + int soff = 0; +loop: + fcnt = bv->bv_len - (off - bv->bv_offset); + if (fcnt > cnt) + fcnt = cnt; + p = page_address(bv->bv_page) + off; + skb_copy_bits(skb, soff, p, fcnt); + soff += fcnt; + cnt -= fcnt; + if (cnt <= 0) + return; + bv++; + off = bv->bv_offset; + goto loop; +} + +void +aoe_end_request(struct aoedev *d, struct request *rq, int fastfail) +{ + struct bio *bio; + int bok; + struct request_queue *q; + + q = d->blkq; + if (rq == d->ip.rq) + d->ip.rq = NULL; + do { + bio = rq->bio; + bok = !fastfail && test_bit(BIO_UPTODATE, &bio->bi_flags); + } while (__blk_end_request(rq, bok ? 0 : -EIO, bio->bi_size)); + + /* cf. http://lkml.org/lkml/2006/10/31/28 */ + if (!fastfail) + q->request_fn(q); +} + +static void +aoe_end_buf(struct aoedev *d, struct buf *buf) +{ + struct request *rq; + unsigned long n; + + if (buf == d->ip.buf) + d->ip.buf = NULL; + rq = buf->rq; + bio_pagedec(buf->bio); + mempool_free(buf, d->bufpool); + n = (unsigned long) rq->special; + rq->special = (void *) --n; + if (n == 0) + aoe_end_request(d, rq, 0); +} + +static void +ktiocomplete(struct frame *f) { - unsigned long n_sect = bio->bi_size >> 9; - const int rw = bio_data_dir(bio); - struct hd_struct *part; - int cpu; + struct aoe_hdr *hin, *hout; + struct aoe_atahdr *ahin, *ahout; + struct buf *buf; + struct sk_buff *skb; + struct aoetgt *t; + struct aoeif *ifp; + struct aoedev *d; + long n; + + if (f == NULL) + return; + + t = f->t; + d = t->d; + + hout = (struct aoe_hdr *) skb_mac_header(f->skb); + ahout = (struct aoe_atahdr *) (hout+1); + buf = f->buf; + skb = f->r_skb; + if (skb == NULL) + goto noskb; /* just fail the buf. */ + + hin = (struct aoe_hdr *) skb->data; + skb_pull(skb, sizeof(*hin)); + ahin = (struct aoe_atahdr *) skb->data; + skb_pull(skb, sizeof(*ahin)); + if (ahin->cmdstat & 0xa9) { /* these bits cleared on success */ + pr_err("aoe: ata error cmd=%2.2Xh stat=%2.2Xh from e%ld.%d\n", + ahout->cmdstat, ahin->cmdstat, + d->aoemajor, d->aoeminor); +noskb: if (buf) + clear_bit(BIO_UPTODATE, &buf->bio->bi_flags); + goto badrsp; + } - cpu = part_stat_lock(); - part = disk_map_sector_rcu(disk, sector); + n = ahout->scnt << 9; + switch (ahout->cmdstat) { + case ATA_CMD_PIO_READ: + case ATA_CMD_PIO_READ_EXT: + if (skb->len < n) { + pr_err("aoe: runt data size in read. skb->len=%d need=%ld\n", + skb->len, n); + clear_bit(BIO_UPTODATE, &buf->bio->bi_flags); + break; + } + bvcpy(f->bv, f->bv_off, skb, n); + case ATA_CMD_PIO_WRITE: + case ATA_CMD_PIO_WRITE_EXT: + spin_lock_irq(&d->lock); + ifp = getif(t, skb->dev); + if (ifp) + ifp->lost = 0; + if (d->htgt == t) /* I'll help myself, thank you. */ + d->htgt = NULL; + spin_unlock_irq(&d->lock); + break; + case ATA_CMD_ID_ATA: + if (skb->len < 512) { + pr_info("aoe: runt data size in ataid. skb->len=%d\n", + skb->len); + break; + } + if (skb_linearize(skb)) + break; + spin_lock_irq(&d->lock); + ataid_complete(d, t, skb->data); + spin_unlock_irq(&d->lock); + break; + default: + pr_info("aoe: unrecognized ata command %2.2Xh for %d.%d\n", + ahout->cmdstat, + be16_to_cpu(get_unaligned(&hin->major)), + hin->minor); + } +badrsp: + spin_lock_irq(&d->lock); + + aoe_freetframe(f); + + if (buf && --buf->nframesout == 0 && buf->resid == 0) + aoe_end_buf(d, buf); + + aoecmd_work(d); + + spin_unlock_irq(&d->lock); + aoedev_put(d); + dev_kfree_skb(skb); +} + +/* Enters with iocq.lock held. + * Returns true iff responses needing processing remain. + */ +static int +ktio(void) +{ + struct frame *f; + struct list_head *pos; + int i; - part_stat_inc(cpu, part, ios[rw]); - part_stat_add(cpu, part, ticks[rw], duration); - part_stat_add(cpu, part, sectors[rw], n_sect); - part_stat_add(cpu, part, io_ticks, duration); + for (i = 0; ; ++i) { + if (i == MAXIOC) + return 1; + if (list_empty(&iocq.head)) + return 0; + pos = iocq.head.next; + list_del(pos); + spin_unlock_irq(&iocq.lock); + f = list_entry(pos, struct frame, head); + ktiocomplete(f); + spin_lock_irq(&iocq.lock); + } +} - part_stat_unlock(); +static int +kthread(void *vp) +{ + struct ktstate *k; + DECLARE_WAITQUEUE(wait, current); + int more; + + k = vp; + current->flags |= PF_NOFREEZE; + set_user_nice(current, -10); + complete(&k->rendez); /* tell spawner we're running */ + do { + spin_lock_irq(k->lock); + more = k->fn(); + if (!more) { + add_wait_queue(k->waitq, &wait); + __set_current_state(TASK_INTERRUPTIBLE); + } + spin_unlock_irq(k->lock); + if (!more) { + schedule(); + remove_wait_queue(k->waitq, &wait); + } else + cond_resched(); + } while (!kthread_should_stop()); + complete(&k->rendez); /* tell spawner we're stopping */ + return 0; } void +aoe_ktstop(struct ktstate *k) +{ + kthread_stop(k->task); + wait_for_completion(&k->rendez); +} + +int +aoe_ktstart(struct ktstate *k) +{ + struct task_struct *task; + + init_completion(&k->rendez); + task = kthread_run(kthread, k, k->name); + if (task == NULL || IS_ERR(task)) + return -ENOMEM; + k->task = task; + wait_for_completion(&k->rendez); /* allow kthread to start */ + init_completion(&k->rendez); /* for waiting for exit later */ + return 0; +} + +/* pass it off to kthreads for processing */ +static void +ktcomplete(struct frame *f, struct sk_buff *skb) +{ + ulong flags; + + f->r_skb = skb; + spin_lock_irqsave(&iocq.lock, flags); + list_add_tail(&f->head, &iocq.head); + spin_unlock_irqrestore(&iocq.lock, flags); + wake_up(&ktiowq); +} + +struct sk_buff * aoecmd_ata_rsp(struct sk_buff *skb) { - struct sk_buff_head queue; struct aoedev *d; - struct aoe_hdr *hin, *hout; - struct aoe_atahdr *ahin, *ahout; + struct aoe_hdr *h; struct frame *f; - struct buf *buf; struct aoetgt *t; - struct aoeif *ifp; - register long n; + u32 n; ulong flags; char ebuf[128]; u16 aoemajor; - hin = (struct aoe_hdr *) skb_mac_header(skb); - aoemajor = get_unaligned_be16(&hin->major); - d = aoedev_by_aoeaddr(aoemajor, hin->minor); + h = (struct aoe_hdr *) skb->data; + aoemajor = be16_to_cpu(get_unaligned(&h->major)); + d = aoedev_by_aoeaddr(aoemajor, h->minor, 0); if (d == NULL) { snprintf(ebuf, sizeof ebuf, "aoecmd_ata_rsp: ata response " "for unknown device %d.%d\n", - aoemajor, hin->minor); + aoemajor, h->minor); aoechr_error(ebuf); - return; + return skb; } spin_lock_irqsave(&d->lock, flags); - n = get_unaligned_be32(&hin->tag); - t = gettgt(d, hin->src); - if (t == NULL) { - printk(KERN_INFO "aoe: can't find target e%ld.%d:%pm\n", - d->aoemajor, d->aoeminor, hin->src); - spin_unlock_irqrestore(&d->lock, flags); - return; - } - f = getframe(t, n); + n = be32_to_cpu(get_unaligned(&h->tag)); + f = getframe(d, n); if (f == NULL) { calc_rttavg(d, -tsince(n)); spin_unlock_irqrestore(&d->lock, flags); + aoedev_put(d); snprintf(ebuf, sizeof ebuf, "%15s e%d.%d tag=%08x@%08lx\n", "unexpected rsp", - get_unaligned_be16(&hin->major), - hin->minor, - get_unaligned_be32(&hin->tag), + get_unaligned_be16(&h->major), + h->minor, + get_unaligned_be32(&h->tag), jiffies); aoechr_error(ebuf); - return; + return skb; } - + t = f->t; calc_rttavg(d, tsince(f->tag)); - - ahin = (struct aoe_atahdr *) (hin+1); - hout = (struct aoe_hdr *) skb_mac_header(f->skb); - ahout = (struct aoe_atahdr *) (hout+1); - buf = f->buf; - - if (ahin->cmdstat & 0xa9) { /* these bits cleared on success */ - printk(KERN_ERR - "aoe: ata error cmd=%2.2Xh stat=%2.2Xh from e%ld.%d\n", - ahout->cmdstat, ahin->cmdstat, - d->aoemajor, d->aoeminor); - if (buf) - buf->flags |= BUFFL_FAIL; - } else { - if (d->htgt && t == *d->htgt) /* I'll help myself, thank you. */ - d->htgt = NULL; - n = ahout->scnt << 9; - switch (ahout->cmdstat) { - case ATA_CMD_PIO_READ: - case ATA_CMD_PIO_READ_EXT: - if (skb->len - sizeof *hin - sizeof *ahin < n) { - printk(KERN_ERR - "aoe: %s. skb->len=%d need=%ld\n", - "runt data size in read", skb->len, n); - /* fail frame f? just returning will rexmit. */ - spin_unlock_irqrestore(&d->lock, flags); - return; - } - memcpy(f->bufaddr, ahin+1, n); - case ATA_CMD_PIO_WRITE: - case ATA_CMD_PIO_WRITE_EXT: - ifp = getif(t, skb->dev); - if (ifp) { - ifp->lost = 0; - if (n > DEFAULTBCNT) - ifp->lostjumbo = 0; - } - if (f->bcnt -= n) { - f->lba += n >> 9; - f->bufaddr += n; - resend(d, t, f); - goto xmit; - } - break; - case ATA_CMD_ID_ATA: - if (skb->len - sizeof *hin - sizeof *ahin < 512) { - printk(KERN_INFO - "aoe: runt data size in ataid. skb->len=%d\n", - skb->len); - spin_unlock_irqrestore(&d->lock, flags); - return; - } - ataid_complete(d, t, (char *) (ahin+1)); - break; - default: - printk(KERN_INFO - "aoe: unrecognized ata command %2.2Xh for %d.%d\n", - ahout->cmdstat, - get_unaligned_be16(&hin->major), - hin->minor); - } - } - - if (buf && --buf->nframesout == 0 && buf->resid == 0) { - diskstats(d->gd, buf->bio, jiffies - buf->stime, buf->sector); - if (buf->flags & BUFFL_FAIL) - bio_endio(buf->bio, -EIO); - else { - bio_flush_dcache_pages(buf->bio); - bio_endio(buf->bio, 0); - } - mempool_free(buf, d->bufpool); - } - - f->buf = NULL; - f->tag = FREETAG; t->nout--; - aoecmd_work(d); -xmit: - __skb_queue_head_init(&queue); - skb_queue_splice_init(&d->sendq, &queue); spin_unlock_irqrestore(&d->lock, flags); - aoenet_xmit(&queue); + + ktcomplete(f, skb); + + /* + * Note here that we do not perform an aoedev_put, as we are + * leaving this reference for the ktio to release. + */ + return NULL; } void @@ -896,7 +1211,7 @@ aoecmd_ata_id(struct aoedev *d) struct sk_buff *skb; struct aoetgt *t; - f = freeframe(d); + f = newframe(d); if (f == NULL) return NULL; @@ -909,6 +1224,7 @@ aoecmd_ata_id(struct aoedev *d) skb_put(skb, sizeof *h + sizeof *ah); memset(h, 0, skb->len); f->tag = aoehdr_atainit(d, t, h); + fhash(f); t->nout++; f->waited = 0; @@ -929,7 +1245,6 @@ static struct aoetgt * addtgt(struct aoedev *d, char *addr, ulong nframes) { struct aoetgt *t, **tt, **te; - struct frame *f, *e; tt = d->targets; te = tt + NTARGETS; @@ -941,26 +1256,73 @@ addtgt(struct aoedev *d, char *addr, ulong nframes) "aoe: device addtgt failure; too many targets\n"); return NULL; } - t = kcalloc(1, sizeof *t, GFP_ATOMIC); - f = kcalloc(nframes, sizeof *f, GFP_ATOMIC); - if (!t || !f) { - kfree(f); - kfree(t); + t = kzalloc(sizeof(*t), GFP_ATOMIC); + if (!t) { printk(KERN_INFO "aoe: cannot allocate memory to add target\n"); return NULL; } + d->ntargets++; t->nframes = nframes; - t->frames = f; - e = f + nframes; - for (; f < e; f++) - f->tag = FREETAG; + t->d = d; memcpy(t->addr, addr, sizeof t->addr); t->ifp = t->ifs; t->maxout = t->nframes; + INIT_LIST_HEAD(&t->ffree); return *tt = t; } +static void +setdbcnt(struct aoedev *d) +{ + struct aoetgt **t, **e; + int bcnt = 0; + + t = d->targets; + e = t + NTARGETS; + for (; t < e && *t; t++) + if (bcnt == 0 || bcnt > (*t)->minbcnt) + bcnt = (*t)->minbcnt; + if (bcnt != d->maxbcnt) { + d->maxbcnt = bcnt; + pr_info("aoe: e%ld.%d: setting %d byte data frames\n", + d->aoemajor, d->aoeminor, bcnt); + } +} + +static void +setifbcnt(struct aoetgt *t, struct net_device *nd, int bcnt) +{ + struct aoedev *d; + struct aoeif *p, *e; + int minbcnt; + + d = t->d; + minbcnt = bcnt; + p = t->ifs; + e = p + NAOEIFS; + for (; p < e; p++) { + if (p->nd == NULL) + break; /* end of the valid interfaces */ + if (p->nd == nd) { + p->bcnt = bcnt; /* we're updating */ + nd = NULL; + } else if (minbcnt > p->bcnt) + minbcnt = p->bcnt; /* find the min interface */ + } + if (nd) { + if (p == e) { + pr_err("aoe: device setifbcnt failure; too many interfaces.\n"); + return; + } + dev_hold(nd); + p->nd = nd; + p->bcnt = bcnt; + } + t->minbcnt = minbcnt; + setdbcnt(d); +} + void aoecmd_cfg_rsp(struct sk_buff *skb) { @@ -968,11 +1330,12 @@ aoecmd_cfg_rsp(struct sk_buff *skb) struct aoe_hdr *h; struct aoe_cfghdr *ch; struct aoetgt *t; - struct aoeif *ifp; - ulong flags, sysminor, aoemajor; + ulong flags, aoemajor; struct sk_buff *sl; + struct sk_buff_head queue; u16 n; + sl = NULL; h = (struct aoe_hdr *) skb_mac_header(skb); ch = (struct aoe_cfghdr *) (h+1); @@ -986,10 +1349,13 @@ aoecmd_cfg_rsp(struct sk_buff *skb) "Check shelf dip switches.\n"); return; } - - sysminor = SYSMINOR(aoemajor, h->minor); - if (sysminor * AOE_PARTITIONS + AOE_PARTITIONS > MINORMASK) { - printk(KERN_INFO "aoe: e%ld.%d: minor number too large\n", + if (aoemajor == 0xffff) { + pr_info("aoe: e%ld.%d: broadcast shelf number invalid\n", + aoemajor, (int) h->minor); + return; + } + if (h->minor == 0xff) { + pr_info("aoe: e%ld.%d: broadcast slot number invalid\n", aoemajor, (int) h->minor); return; } @@ -998,9 +1364,9 @@ aoecmd_cfg_rsp(struct sk_buff *skb) if (n > aoe_maxout) /* keep it reasonable */ n = aoe_maxout; - d = aoedev_by_sysminor_m(sysminor); + d = aoedev_by_aoeaddr(aoemajor, h->minor, 1); if (d == NULL) { - printk(KERN_INFO "aoe: device sysminor_m failure\n"); + pr_info("aoe: device allocation failure\n"); return; } @@ -1009,52 +1375,26 @@ aoecmd_cfg_rsp(struct sk_buff *skb) t = gettgt(d, h->src); if (!t) { t = addtgt(d, h->src, n); - if (!t) { - spin_unlock_irqrestore(&d->lock, flags); - return; - } - } - ifp = getif(t, skb->dev); - if (!ifp) { - ifp = addif(t, skb->dev); - if (!ifp) { - printk(KERN_INFO - "aoe: device addif failure; " - "too many interfaces?\n"); - spin_unlock_irqrestore(&d->lock, flags); - return; - } - } - if (ifp->maxbcnt) { - n = ifp->nd->mtu; - n -= sizeof (struct aoe_hdr) + sizeof (struct aoe_atahdr); - n /= 512; - if (n > ch->scnt) - n = ch->scnt; - n = n ? n * 512 : DEFAULTBCNT; - if (n != ifp->maxbcnt) { - printk(KERN_INFO - "aoe: e%ld.%d: setting %d%s%s:%pm\n", - d->aoemajor, d->aoeminor, n, - " byte data frames on ", ifp->nd->name, - t->addr); - ifp->maxbcnt = n; - } + if (!t) + goto bail; } + n = skb->dev->mtu; + n -= sizeof(struct aoe_hdr) + sizeof(struct aoe_atahdr); + n /= 512; + if (n > ch->scnt) + n = ch->scnt; + n = n ? n * 512 : DEFAULTBCNT; + setifbcnt(t, skb->dev, n); /* don't change users' perspective */ - if (d->nopen) { - spin_unlock_irqrestore(&d->lock, flags); - return; + if (d->nopen == 0) { + d->fw_ver = be16_to_cpu(ch->fwver); + sl = aoecmd_ata_id(d); } - d->fw_ver = be16_to_cpu(ch->fwver); - - sl = aoecmd_ata_id(d); - +bail: spin_unlock_irqrestore(&d->lock, flags); - + aoedev_put(d); if (sl) { - struct sk_buff_head queue; __skb_queue_head_init(&queue); __skb_queue_tail(&queue, sl); aoenet_xmit(&queue); @@ -1065,20 +1405,74 @@ void aoecmd_cleanslate(struct aoedev *d) { struct aoetgt **t, **te; - struct aoeif *p, *e; d->mintimer = MINTIMER; + d->maxbcnt = 0; t = d->targets; te = t + NTARGETS; - for (; t < te && *t; t++) { + for (; t < te && *t; t++) (*t)->maxout = (*t)->nframes; - p = (*t)->ifs; - e = p + NAOEIFS; - for (; p < e; p++) { - p->lostjumbo = 0; - p->lost = 0; - p->maxbcnt = DEFAULTBCNT; +} + +void +aoe_failbuf(struct aoedev *d, struct buf *buf) +{ + if (buf == NULL) + return; + buf->resid = 0; + clear_bit(BIO_UPTODATE, &buf->bio->bi_flags); + if (buf->nframesout == 0) + aoe_end_buf(d, buf); +} + +void +aoe_flush_iocq(void) +{ + struct frame *f; + struct aoedev *d; + LIST_HEAD(flist); + struct list_head *pos; + struct sk_buff *skb; + ulong flags; + + spin_lock_irqsave(&iocq.lock, flags); + list_splice_init(&iocq.head, &flist); + spin_unlock_irqrestore(&iocq.lock, flags); + while (!list_empty(&flist)) { + pos = flist.next; + list_del(pos); + f = list_entry(pos, struct frame, head); + d = f->t->d; + skb = f->r_skb; + spin_lock_irqsave(&d->lock, flags); + if (f->buf) { + f->buf->nframesout--; + aoe_failbuf(d, f->buf); } + aoe_freetframe(f); + spin_unlock_irqrestore(&d->lock, flags); + dev_kfree_skb(skb); + aoedev_put(d); } } + +int __init +aoecmd_init(void) +{ + INIT_LIST_HEAD(&iocq.head); + spin_lock_init(&iocq.lock); + init_waitqueue_head(&ktiowq); + kts.name = "aoe_ktio"; + kts.fn = ktio; + kts.waitq = &ktiowq; + kts.lock = &iocq.lock; + return aoe_ktstart(&kts); +} + +void +aoecmd_exit(void) +{ + aoe_ktstop(&kts); + aoe_flush_iocq(); +} diff --git a/drivers/block/aoe/aoedev.c b/drivers/block/aoe/aoedev.c index 6b5110a4745..90e5b537f94 100644 --- a/drivers/block/aoe/aoedev.c +++ b/drivers/block/aoe/aoedev.c @@ -1,4 +1,4 @@ -/* Copyright (c) 2007 Coraid, Inc. See COPYING for GPL terms. */ +/* Copyright (c) 2012 Coraid, Inc. See COPYING for GPL terms. */ /* * aoedev.c * AoE device utility functions; maintains device list. @@ -9,6 +9,9 @@ #include <linux/netdevice.h> #include <linux/delay.h> #include <linux/slab.h> +#include <linux/bitmap.h> +#include <linux/kdev_t.h> +#include <linux/moduleparam.h> #include "aoe.h" static void dummy_timer(ulong); @@ -16,23 +19,121 @@ static void aoedev_freedev(struct aoedev *); static void freetgt(struct aoedev *d, struct aoetgt *t); static void skbpoolfree(struct aoedev *d); +static int aoe_dyndevs = 1; +module_param(aoe_dyndevs, int, 0644); +MODULE_PARM_DESC(aoe_dyndevs, "Use dynamic minor numbers for devices."); + static struct aoedev *devlist; static DEFINE_SPINLOCK(devlist_lock); -struct aoedev * -aoedev_by_aoeaddr(int maj, int min) +/* Because some systems will have one, many, or no + * - partitions, + * - slots per shelf, + * - or shelves, + * we need some flexibility in the way the minor numbers + * are allocated. So they are dynamic. + */ +#define N_DEVS ((1U<<MINORBITS)/AOE_PARTITIONS) + +static DEFINE_SPINLOCK(used_minors_lock); +static DECLARE_BITMAP(used_minors, N_DEVS); + +static int +minor_get_dyn(ulong *sysminor) { - struct aoedev *d; ulong flags; + ulong n; + int error = 0; + + spin_lock_irqsave(&used_minors_lock, flags); + n = find_first_zero_bit(used_minors, N_DEVS); + if (n < N_DEVS) + set_bit(n, used_minors); + else + error = -1; + spin_unlock_irqrestore(&used_minors_lock, flags); + + *sysminor = n * AOE_PARTITIONS; + return error; +} - spin_lock_irqsave(&devlist_lock, flags); +static int +minor_get_static(ulong *sysminor, ulong aoemaj, int aoemin) +{ + ulong flags; + ulong n; + int error = 0; + enum { + /* for backwards compatibility when !aoe_dyndevs, + * a static number of supported slots per shelf */ + NPERSHELF = 16, + }; + + n = aoemaj * NPERSHELF + aoemin; + if (aoemin >= NPERSHELF || n >= N_DEVS) { + pr_err("aoe: %s with e%ld.%d\n", + "cannot use static minor device numbers", + aoemaj, aoemin); + error = -1; + } else { + spin_lock_irqsave(&used_minors_lock, flags); + if (test_bit(n, used_minors)) { + pr_err("aoe: %s %lu\n", + "existing device already has static minor number", + n); + error = -1; + } else + set_bit(n, used_minors); + spin_unlock_irqrestore(&used_minors_lock, flags); + } - for (d=devlist; d; d=d->next) - if (d->aoemajor == maj && d->aoeminor == min) - break; + *sysminor = n; + return error; +} + +static int +minor_get(ulong *sysminor, ulong aoemaj, int aoemin) +{ + if (aoe_dyndevs) + return minor_get_dyn(sysminor); + else + return minor_get_static(sysminor, aoemaj, aoemin); +} + +static void +minor_free(ulong minor) +{ + ulong flags; + + minor /= AOE_PARTITIONS; + BUG_ON(minor >= N_DEVS); + + spin_lock_irqsave(&used_minors_lock, flags); + BUG_ON(!test_bit(minor, used_minors)); + clear_bit(minor, used_minors); + spin_unlock_irqrestore(&used_minors_lock, flags); +} + +/* + * Users who grab a pointer to the device with aoedev_by_aoeaddr + * automatically get a reference count and must be responsible + * for performing a aoedev_put. With the addition of async + * kthread processing I'm no longer confident that we can + * guarantee consistency in the face of device flushes. + * + * For the time being, we only bother to add extra references for + * frames sitting on the iocq. When the kthreads finish processing + * these frames, they will aoedev_put the device. + */ + +void +aoedev_put(struct aoedev *d) +{ + ulong flags; + spin_lock_irqsave(&devlist_lock, flags); + d->ref--; spin_unlock_irqrestore(&devlist_lock, flags); - return d; } static void @@ -47,54 +148,74 @@ dummy_timer(ulong vp) add_timer(&d->timer); } +static void +aoe_failip(struct aoedev *d) +{ + struct request *rq; + struct bio *bio; + unsigned long n; + + aoe_failbuf(d, d->ip.buf); + + rq = d->ip.rq; + if (rq == NULL) + return; + while ((bio = d->ip.nxbio)) { + clear_bit(BIO_UPTODATE, &bio->bi_flags); + d->ip.nxbio = bio->bi_next; + n = (unsigned long) rq->special; + rq->special = (void *) --n; + } + if ((unsigned long) rq->special == 0) + aoe_end_request(d, rq, 0); +} + void aoedev_downdev(struct aoedev *d) { - struct aoetgt **t, **te; - struct frame *f, *e; - struct buf *buf; - struct bio *bio; + struct aoetgt *t, **tt, **te; + struct frame *f; + struct list_head *head, *pos, *nx; + struct request *rq; + int i; - t = d->targets; - te = t + NTARGETS; - for (; t < te && *t; t++) { - f = (*t)->frames; - e = f + (*t)->nframes; - for (; f < e; f->tag = FREETAG, f->buf = NULL, f++) { - if (f->tag == FREETAG || f->buf == NULL) - continue; - buf = f->buf; - bio = buf->bio; - if (--buf->nframesout == 0 - && buf != d->inprocess) { - mempool_free(buf, d->bufpool); - bio_endio(bio, -EIO); + d->flags &= ~DEVFL_UP; + + /* clean out active buffers */ + for (i = 0; i < NFACTIVE; i++) { + head = &d->factive[i]; + list_for_each_safe(pos, nx, head) { + f = list_entry(pos, struct frame, head); + list_del(pos); + if (f->buf) { + f->buf->nframesout--; + aoe_failbuf(d, f->buf); } + aoe_freetframe(f); } - (*t)->maxout = (*t)->nframes; - (*t)->nout = 0; } - buf = d->inprocess; - if (buf) { - bio = buf->bio; - mempool_free(buf, d->bufpool); - bio_endio(bio, -EIO); + /* reset window dressings */ + tt = d->targets; + te = tt + NTARGETS; + for (; tt < te && (t = *tt); tt++) { + t->maxout = t->nframes; + t->nout = 0; } - d->inprocess = NULL; + + /* clean out the in-process request (if any) */ + aoe_failip(d); d->htgt = NULL; - while (!list_empty(&d->bufq)) { - buf = container_of(d->bufq.next, struct buf, bufs); - list_del(d->bufq.next); - bio = buf->bio; - mempool_free(buf, d->bufpool); - bio_endio(bio, -EIO); + /* fast fail all pending I/O */ + if (d->blkq) { + while ((rq = blk_peek_request(d->blkq))) { + blk_start_request(rq); + aoe_end_request(d, rq, 1); + } } if (d->gd) set_capacity(d->gd, 0); - - d->flags &= ~DEVFL_UP; } static void @@ -107,6 +228,7 @@ aoedev_freedev(struct aoedev *d) aoedisk_rm_sysfs(d); del_gendisk(d->gd); put_disk(d->gd); + blk_cleanup_queue(d->blkq); } t = d->targets; e = t + NTARGETS; @@ -115,7 +237,7 @@ aoedev_freedev(struct aoedev *d) if (d->bufpool) mempool_destroy(d->bufpool); skbpoolfree(d); - blk_cleanup_queue(d->blkq); + minor_free(d->sysminor); kfree(d); } @@ -142,7 +264,8 @@ aoedev_flush(const char __user *str, size_t cnt) spin_lock(&d->lock); if ((!all && (d->flags & DEVFL_UP)) || (d->flags & (DEVFL_GDALLOC|DEVFL_NEWSIZE)) - || d->nopen) { + || d->nopen + || d->ref) { spin_unlock(&d->lock); dd = &d->next; continue; @@ -163,12 +286,15 @@ aoedev_flush(const char __user *str, size_t cnt) return 0; } -/* I'm not really sure that this is a realistic problem, but if the -network driver goes gonzo let's just leak memory after complaining. */ +/* This has been confirmed to occur once with Tms=3*1000 due to the + * driver changing link and not processing its transmit ring. The + * problem is hard enough to solve by returning an error that I'm + * still punting on "solving" this. + */ static void skbfree(struct sk_buff *skb) { - enum { Sms = 100, Tms = 3*1000}; + enum { Sms = 250, Tms = 30 * 1000}; int i = Tms / Sms; if (skb == NULL) @@ -182,6 +308,7 @@ skbfree(struct sk_buff *skb) "cannot free skb -- memory leaked."); return; } + skb->truesize -= skb->data_len; skb_shinfo(skb)->nr_frags = skb->data_len = 0; skb_trim(skb, 0); dev_kfree_skb(skb); @@ -198,26 +325,29 @@ skbpoolfree(struct aoedev *d) __skb_queue_head_init(&d->skbpool); } -/* find it or malloc it */ +/* find it or allocate it */ struct aoedev * -aoedev_by_sysminor_m(ulong sysminor) +aoedev_by_aoeaddr(ulong maj, int min, int do_alloc) { struct aoedev *d; + int i; ulong flags; + ulong sysminor; spin_lock_irqsave(&devlist_lock, flags); for (d=devlist; d; d=d->next) - if (d->sysminor == sysminor) + if (d->aoemajor == maj && d->aoeminor == min) { + d->ref++; break; - if (d) + } + if (d || !do_alloc || minor_get(&sysminor, maj, min) < 0) goto out; d = kcalloc(1, sizeof *d, GFP_ATOMIC); if (!d) goto out; INIT_WORK(&d->work, aoecmd_sleepwork); spin_lock_init(&d->lock); - skb_queue_head_init(&d->sendq); skb_queue_head_init(&d->skbpool); init_timer(&d->timer); d->timer.data = (ulong) d; @@ -226,10 +356,12 @@ aoedev_by_sysminor_m(ulong sysminor) add_timer(&d->timer); d->bufpool = NULL; /* defer to aoeblk_gdalloc */ d->tgt = d->targets; - INIT_LIST_HEAD(&d->bufq); + d->ref = 1; + for (i = 0; i < NFACTIVE; i++) + INIT_LIST_HEAD(&d->factive[i]); d->sysminor = sysminor; - d->aoemajor = AOEMAJOR(sysminor); - d->aoeminor = AOEMINOR(sysminor); + d->aoemajor = maj; + d->aoeminor = min; d->mintimer = MINTIMER; d->next = devlist; devlist = d; @@ -241,13 +373,23 @@ aoedev_by_sysminor_m(ulong sysminor) static void freetgt(struct aoedev *d, struct aoetgt *t) { - struct frame *f, *e; + struct frame *f; + struct list_head *pos, *nx, *head; + struct aoeif *ifp; - f = t->frames; - e = f + t->nframes; - for (; f < e; f++) + for (ifp = t->ifs; ifp < &t->ifs[NAOEIFS]; ++ifp) { + if (!ifp->nd) + break; + dev_put(ifp->nd); + } + + head = &t->ffree; + list_for_each_safe(pos, nx, head) { + list_del(pos); + f = list_entry(pos, struct frame, head); skbfree(f->skb); - kfree(t->frames); + kfree(f); + } kfree(t); } @@ -257,6 +399,7 @@ aoedev_exit(void) struct aoedev *d; ulong flags; + aoe_flush_iocq(); while ((d = devlist)) { devlist = d->next; diff --git a/drivers/block/aoe/aoemain.c b/drivers/block/aoe/aoemain.c index 7f83ad90e76..04793c2c701 100644 --- a/drivers/block/aoe/aoemain.c +++ b/drivers/block/aoe/aoemain.c @@ -1,4 +1,4 @@ -/* Copyright (c) 2007 Coraid, Inc. See COPYING for GPL terms. */ +/* Copyright (c) 2012 Coraid, Inc. See COPYING for GPL terms. */ /* * aoemain.c * Module initialization routines, discover timer @@ -61,6 +61,7 @@ aoe_exit(void) aoenet_exit(); unregister_blkdev(AOE_MAJOR, DEVICE_NAME); + aoecmd_exit(); aoechr_exit(); aoedev_exit(); aoeblk_exit(); /* free cache after de-allocating bufs */ @@ -83,17 +84,20 @@ aoe_init(void) ret = aoenet_init(); if (ret) goto net_fail; + ret = aoecmd_init(); + if (ret) + goto cmd_fail; ret = register_blkdev(AOE_MAJOR, DEVICE_NAME); if (ret < 0) { printk(KERN_ERR "aoe: can't register major\n"); goto blkreg_fail; } - printk(KERN_INFO "aoe: AoE v%s initialised.\n", VERSION); discover_timer(TINIT); return 0; - blkreg_fail: + aoecmd_exit(); + cmd_fail: aoenet_exit(); net_fail: aoeblk_exit(); diff --git a/drivers/block/aoe/aoenet.c b/drivers/block/aoe/aoenet.c index 4d3bc0d49df..162c6471275 100644 --- a/drivers/block/aoe/aoenet.c +++ b/drivers/block/aoe/aoenet.c @@ -1,4 +1,4 @@ -/* Copyright (c) 2007 Coraid, Inc. See COPYING for GPL terms. */ +/* Copyright (c) 2012 Coraid, Inc. See COPYING for GPL terms. */ /* * aoenet.c * Ethernet portion of AoE driver @@ -33,6 +33,9 @@ static char aoe_iflist[IFLISTSZ]; module_param_string(aoe_iflist, aoe_iflist, IFLISTSZ, 0600); MODULE_PARM_DESC(aoe_iflist, "aoe_iflist=\"dev1 [dev2 ...]\""); +static wait_queue_head_t txwq; +static struct ktstate kts; + #ifndef MODULE static int __init aoe_iflist_setup(char *str) { @@ -44,6 +47,23 @@ static int __init aoe_iflist_setup(char *str) __setup("aoe_iflist=", aoe_iflist_setup); #endif +static spinlock_t txlock; +static struct sk_buff_head skbtxq; + +/* enters with txlock held */ +static int +tx(void) +{ + struct sk_buff *skb; + + while ((skb = skb_dequeue(&skbtxq))) { + spin_unlock_irq(&txlock); + dev_queue_xmit(skb); + spin_lock_irq(&txlock); + } + return 0; +} + int is_aoe_netif(struct net_device *ifp) { @@ -88,10 +108,14 @@ void aoenet_xmit(struct sk_buff_head *queue) { struct sk_buff *skb, *tmp; + ulong flags; skb_queue_walk_safe(queue, skb, tmp) { __skb_unlink(skb, queue); - dev_queue_xmit(skb); + spin_lock_irqsave(&txlock, flags); + skb_queue_tail(&skbtxq, skb); + spin_unlock_irqrestore(&txlock, flags); + wake_up(&txwq); } } @@ -102,7 +126,9 @@ static int aoenet_rcv(struct sk_buff *skb, struct net_device *ifp, struct packet_type *pt, struct net_device *orig_dev) { struct aoe_hdr *h; + struct aoe_atahdr *ah; u32 n; + int sn; if (dev_net(ifp) != &init_net) goto exit; @@ -110,13 +136,16 @@ aoenet_rcv(struct sk_buff *skb, struct net_device *ifp, struct packet_type *pt, skb = skb_share_check(skb, GFP_ATOMIC); if (skb == NULL) return 0; - if (skb_linearize(skb)) - goto exit; if (!is_aoe_netif(ifp)) goto exit; skb_push(skb, ETH_HLEN); /* (1) */ - - h = (struct aoe_hdr *) skb_mac_header(skb); + sn = sizeof(*h) + sizeof(*ah); + if (skb->len >= sn) { + sn -= skb_headlen(skb); + if (sn > 0 && !__pskb_pull_tail(skb, sn)) + goto exit; + } + h = (struct aoe_hdr *) skb->data; n = get_unaligned_be32(&h->tag); if ((h->verfl & AOEFL_RSP) == 0 || (n & 1<<31)) goto exit; @@ -137,7 +166,8 @@ aoenet_rcv(struct sk_buff *skb, struct net_device *ifp, struct packet_type *pt, switch (h->cmd) { case AOECMD_ATA: - aoecmd_ata_rsp(skb); + /* ata_rsp may keep skb for later processing or give it back */ + skb = aoecmd_ata_rsp(skb); break; case AOECMD_CFG: aoecmd_cfg_rsp(skb); @@ -145,8 +175,12 @@ aoenet_rcv(struct sk_buff *skb, struct net_device *ifp, struct packet_type *pt, default: if (h->cmd >= AOECMD_VEND_MIN) break; /* don't complain about vendor commands */ - printk(KERN_INFO "aoe: unknown cmd %d\n", h->cmd); + pr_info("aoe: unknown AoE command type 0x%02x\n", h->cmd); + break; } + + if (!skb) + return 0; exit: dev_kfree_skb(skb); return 0; @@ -160,6 +194,15 @@ static struct packet_type aoe_pt __read_mostly = { int __init aoenet_init(void) { + skb_queue_head_init(&skbtxq); + init_waitqueue_head(&txwq); + spin_lock_init(&txlock); + kts.lock = &txlock; + kts.fn = tx; + kts.waitq = &txwq; + kts.name = "aoe_tx"; + if (aoe_ktstart(&kts)) + return -EAGAIN; dev_add_pack(&aoe_pt); return 0; } @@ -167,6 +210,8 @@ aoenet_init(void) void aoenet_exit(void) { + aoe_ktstop(&kts); + skb_queue_purge(&skbtxq); dev_remove_pack(&aoe_pt); } diff --git a/drivers/block/nbd.c b/drivers/block/nbd.c index 0c03411c59e..043ddcca4ab 100644 --- a/drivers/block/nbd.c +++ b/drivers/block/nbd.c @@ -78,6 +78,8 @@ static const char *ioctl_cmd_to_ascii(int cmd) case NBD_SET_SOCK: return "set-sock"; case NBD_SET_BLKSIZE: return "set-blksize"; case NBD_SET_SIZE: return "set-size"; + case NBD_SET_TIMEOUT: return "set-timeout"; + case NBD_SET_FLAGS: return "set-flags"; case NBD_DO_IT: return "do-it"; case NBD_CLEAR_SOCK: return "clear-sock"; case NBD_CLEAR_QUE: return "clear-que"; @@ -96,6 +98,7 @@ static const char *nbdcmd_to_ascii(int cmd) case NBD_CMD_READ: return "read"; case NBD_CMD_WRITE: return "write"; case NBD_CMD_DISC: return "disconnect"; + case NBD_CMD_TRIM: return "trim/discard"; } return "invalid"; } @@ -467,8 +470,12 @@ static void nbd_handle_req(struct nbd_device *nbd, struct request *req) nbd_cmd(req) = NBD_CMD_READ; if (rq_data_dir(req) == WRITE) { - nbd_cmd(req) = NBD_CMD_WRITE; - if (nbd->flags & NBD_READ_ONLY) { + if ((req->cmd_flags & REQ_DISCARD)) { + WARN_ON(!(nbd->flags & NBD_FLAG_SEND_TRIM)); + nbd_cmd(req) = NBD_CMD_TRIM; + } else + nbd_cmd(req) = NBD_CMD_WRITE; + if (nbd->flags & NBD_FLAG_READ_ONLY) { dev_err(disk_to_dev(nbd->disk), "Write on read-only\n"); goto error_out; @@ -651,6 +658,10 @@ static int __nbd_ioctl(struct block_device *bdev, struct nbd_device *nbd, nbd->xmit_timeout = arg * HZ; return 0; + case NBD_SET_FLAGS: + nbd->flags = arg; + return 0; + case NBD_SET_SIZE_BLOCKS: nbd->bytesize = ((u64) arg) * nbd->blksize; bdev->bd_inode->i_size = nbd->bytesize; @@ -670,6 +681,10 @@ static int __nbd_ioctl(struct block_device *bdev, struct nbd_device *nbd, mutex_unlock(&nbd->tx_lock); + if (nbd->flags & NBD_FLAG_SEND_TRIM) + queue_flag_set_unlocked(QUEUE_FLAG_DISCARD, + nbd->disk->queue); + thread = kthread_create(nbd_thread, nbd, nbd->disk->disk_name); if (IS_ERR(thread)) { mutex_lock(&nbd->tx_lock); @@ -687,6 +702,7 @@ static int __nbd_ioctl(struct block_device *bdev, struct nbd_device *nbd, nbd->file = NULL; nbd_clear_que(nbd); dev_warn(disk_to_dev(nbd->disk), "queue cleared\n"); + queue_flag_clear_unlocked(QUEUE_FLAG_DISCARD, nbd->disk->queue); if (file) fput(file); nbd->bytesize = 0; @@ -805,6 +821,9 @@ static int __init nbd_init(void) * Tell the block layer that we are not a rotational device */ queue_flag_set_unlocked(QUEUE_FLAG_NONROT, disk->queue); + disk->queue->limits.discard_granularity = 512; + disk->queue->limits.max_discard_sectors = UINT_MAX; + disk->queue->limits.discard_zeroes_data = 0; } if (register_blkdev(NBD_MAJOR, "nbd")) { diff --git a/drivers/char/mbcs.c b/drivers/char/mbcs.c index 47ff7e470d8..0c7d340b9ab 100644 --- a/drivers/char/mbcs.c +++ b/drivers/char/mbcs.c @@ -799,7 +799,7 @@ static int mbcs_remove(struct cx_dev *dev) return 0; } -static const struct cx_device_id __devinitdata mbcs_id_table[] = { +static const struct cx_device_id __devinitconst mbcs_id_table[] = { { .part_num = MBCS_PART_NUM, .mfg_num = MBCS_MFG_NUM, diff --git a/drivers/dma/dmaengine.c b/drivers/dma/dmaengine.c index 3491654cdf7..a815d44c70a 100644 --- a/drivers/dma/dmaengine.c +++ b/drivers/dma/dmaengine.c @@ -582,7 +582,7 @@ void dmaengine_get(void) list_del_rcu(&device->global_node); break; } else if (err) - pr_err("%s: failed to get %s: (%d)\n", + pr_debug("%s: failed to get %s: (%d)\n", __func__, dma_chan_name(chan), err); } } diff --git a/drivers/i2c/i2c-core.c b/drivers/i2c/i2c-core.c index 2091ae8f539..2421d95130d 100644 --- a/drivers/i2c/i2c-core.c +++ b/drivers/i2c/i2c-core.c @@ -982,7 +982,7 @@ int i2c_add_numbered_adapter(struct i2c_adapter *adap) if (adap->nr == -1) /* -1 means dynamically assign bus id */ return i2c_add_adapter(adap); - if (adap->nr & ~MAX_ID_MASK) + if (adap->nr & ~MAX_IDR_MASK) return -EINVAL; retry: diff --git a/drivers/ide/aec62xx.c b/drivers/ide/aec62xx.c index 57d00caefc8..01451940393 100644 --- a/drivers/ide/aec62xx.c +++ b/drivers/ide/aec62xx.c @@ -181,7 +181,7 @@ static const struct ide_port_ops atp86x_port_ops = { .cable_detect = atp86x_cable_detect, }; -static const struct ide_port_info aec62xx_chipsets[] __devinitdata = { +static const struct ide_port_info aec62xx_chipsets[] __devinitconst = { { /* 0: AEC6210 */ .name = DRV_NAME, .init_chipset = init_chipset_aec62xx, diff --git a/drivers/ide/ali14xx.c b/drivers/ide/ali14xx.c index d3be99fb415..8f3570ee64c 100644 --- a/drivers/ide/ali14xx.c +++ b/drivers/ide/ali14xx.c @@ -52,13 +52,13 @@ /* port addresses for auto-detection */ #define ALI_NUM_PORTS 4 -static const int ports[ALI_NUM_PORTS] __initdata = +static const int ports[ALI_NUM_PORTS] __initconst = { 0x074, 0x0f4, 0x034, 0x0e4 }; /* register initialization data */ typedef struct { u8 reg, data; } RegInitializer; -static const RegInitializer initData[] __initdata = { +static const RegInitializer initData[] __initconst = { {0x01, 0x0f}, {0x02, 0x00}, {0x03, 0x00}, {0x04, 0x00}, {0x05, 0x00}, {0x06, 0x00}, {0x07, 0x2b}, {0x0a, 0x0f}, {0x25, 0x00}, {0x26, 0x00}, {0x27, 0x00}, {0x28, 0x00}, diff --git a/drivers/ide/alim15x3.c b/drivers/ide/alim15x3.c index 2c8016ad0e2..911a27ca356 100644 --- a/drivers/ide/alim15x3.c +++ b/drivers/ide/alim15x3.c @@ -512,7 +512,7 @@ static const struct ide_dma_ops ali_dma_ops = { .dma_sff_read_status = ide_dma_sff_read_status, }; -static const struct ide_port_info ali15x3_chipset __devinitdata = { +static const struct ide_port_info ali15x3_chipset __devinitconst = { .name = DRV_NAME, .init_chipset = init_chipset_ali15x3, .init_hwif = init_hwif_ali15x3, diff --git a/drivers/ide/amd74xx.c b/drivers/ide/amd74xx.c index 3747b2561f0..56fc99557ba 100644 --- a/drivers/ide/amd74xx.c +++ b/drivers/ide/amd74xx.c @@ -223,7 +223,7 @@ static const struct ide_port_ops amd_port_ops = { .udma_mask = udma, \ } -static const struct ide_port_info amd74xx_chipsets[] __devinitdata = { +static const struct ide_port_info amd74xx_chipsets[] __devinitconst = { /* 0: AMD7401 */ DECLARE_AMD_DEV(0x00, ATA_UDMA2), /* 1: AMD7409 */ DECLARE_AMD_DEV(ATA_SWDMA2, ATA_UDMA4), /* 2: AMD7411/7441 */ DECLARE_AMD_DEV(ATA_SWDMA2, ATA_UDMA5), diff --git a/drivers/ide/atiixp.c b/drivers/ide/atiixp.c index 15f0ead89f5..cb43480b1bd 100644 --- a/drivers/ide/atiixp.c +++ b/drivers/ide/atiixp.c @@ -139,7 +139,7 @@ static const struct ide_port_ops atiixp_port_ops = { .cable_detect = atiixp_cable_detect, }; -static const struct ide_port_info atiixp_pci_info[] __devinitdata = { +static const struct ide_port_info atiixp_pci_info[] __devinitconst = { { /* 0: IXP200/300/400/700 */ .name = DRV_NAME, .enablebits = {{0x48,0x01,0x00}, {0x48,0x08,0x00}}, diff --git a/drivers/ide/cmd640.c b/drivers/ide/cmd640.c index 14717304b38..70f0a2754c1 100644 --- a/drivers/ide/cmd640.c +++ b/drivers/ide/cmd640.c @@ -685,7 +685,7 @@ static int pci_conf2(void) return 0; } -static const struct ide_port_info cmd640_port_info __initdata = { +static const struct ide_port_info cmd640_port_info __initconst = { .chipset = ide_cmd640, .host_flags = IDE_HFLAG_SERIALIZE | IDE_HFLAG_NO_DMA | diff --git a/drivers/ide/cmd64x.c b/drivers/ide/cmd64x.c index 5f80312e636..d1fc43802f5 100644 --- a/drivers/ide/cmd64x.c +++ b/drivers/ide/cmd64x.c @@ -327,7 +327,7 @@ static const struct ide_dma_ops cmd646_rev1_dma_ops = { .dma_sff_read_status = ide_dma_sff_read_status, }; -static const struct ide_port_info cmd64x_chipsets[] __devinitdata = { +static const struct ide_port_info cmd64x_chipsets[] __devinitconst = { { /* 0: CMD643 */ .name = DRV_NAME, .init_chipset = init_chipset_cmd64x, diff --git a/drivers/ide/cs5520.c b/drivers/ide/cs5520.c index 2c1e5f7cd26..14447621e60 100644 --- a/drivers/ide/cs5520.c +++ b/drivers/ide/cs5520.c @@ -94,7 +94,7 @@ static const struct ide_port_ops cs5520_port_ops = { .set_dma_mode = cs5520_set_dma_mode, }; -static const struct ide_port_info cyrix_chipset __devinitdata = { +static const struct ide_port_info cyrix_chipset __devinitconst = { .name = DRV_NAME, .enablebits = { { 0x60, 0x01, 0x01 }, { 0x60, 0x02, 0x02 } }, .port_ops = &cs5520_port_ops, diff --git a/drivers/ide/cs5530.c b/drivers/ide/cs5530.c index 4dc4eb92b07..49b40ad59d1 100644 --- a/drivers/ide/cs5530.c +++ b/drivers/ide/cs5530.c @@ -245,7 +245,7 @@ static const struct ide_port_ops cs5530_port_ops = { .udma_filter = cs5530_udma_filter, }; -static const struct ide_port_info cs5530_chipset __devinitdata = { +static const struct ide_port_info cs5530_chipset __devinitconst = { .name = DRV_NAME, .init_chipset = init_chipset_cs5530, .init_hwif = init_hwif_cs5530, diff --git a/drivers/ide/cs5535.c b/drivers/ide/cs5535.c index 5059fafadf2..18d4c852602 100644 --- a/drivers/ide/cs5535.c +++ b/drivers/ide/cs5535.c @@ -170,7 +170,7 @@ static const struct ide_port_ops cs5535_port_ops = { .cable_detect = cs5535_cable_detect, }; -static const struct ide_port_info cs5535_chipset __devinitdata = { +static const struct ide_port_info cs5535_chipset __devinitconst = { .name = DRV_NAME, .port_ops = &cs5535_port_ops, .host_flags = IDE_HFLAG_SINGLE | IDE_HFLAG_POST_SET_MODE, diff --git a/drivers/ide/cy82c693.c b/drivers/ide/cy82c693.c index 847553fd8b9..3ffb49dab57 100644 --- a/drivers/ide/cy82c693.c +++ b/drivers/ide/cy82c693.c @@ -163,7 +163,7 @@ static const struct ide_port_ops cy82c693_port_ops = { .set_dma_mode = cy82c693_set_dma_mode, }; -static const struct ide_port_info cy82c693_chipset __devinitdata = { +static const struct ide_port_info cy82c693_chipset __devinitconst = { .name = DRV_NAME, .init_iops = init_iops_cy82c693, .port_ops = &cy82c693_port_ops, diff --git a/drivers/ide/dtc2278.c b/drivers/ide/dtc2278.c index 46af4743b3e..8722df329cb 100644 --- a/drivers/ide/dtc2278.c +++ b/drivers/ide/dtc2278.c @@ -91,7 +91,7 @@ static const struct ide_port_ops dtc2278_port_ops = { .set_pio_mode = dtc2278_set_pio_mode, }; -static const struct ide_port_info dtc2278_port_info __initdata = { +static const struct ide_port_info dtc2278_port_info __initconst = { .name = DRV_NAME, .chipset = ide_dtc2278, .port_ops = &dtc2278_port_ops, diff --git a/drivers/ide/hpt366.c b/drivers/ide/hpt366.c index 58c51cddc10..4aec3b87ff9 100644 --- a/drivers/ide/hpt366.c +++ b/drivers/ide/hpt366.c @@ -443,7 +443,7 @@ static struct hpt_timings hpt37x_timings = { } }; -static const struct hpt_info hpt36x __devinitdata = { +static const struct hpt_info hpt36x __devinitconst = { .chip_name = "HPT36x", .chip_type = HPT36x, .udma_mask = HPT366_ALLOW_ATA66_3 ? (HPT366_ALLOW_ATA66_4 ? ATA_UDMA4 : ATA_UDMA3) : ATA_UDMA2, @@ -451,7 +451,7 @@ static const struct hpt_info hpt36x __devinitdata = { .timings = &hpt36x_timings }; -static const struct hpt_info hpt370 __devinitdata = { +static const struct hpt_info hpt370 __devinitconst = { .chip_name = "HPT370", .chip_type = HPT370, .udma_mask = HPT370_ALLOW_ATA100_5 ? ATA_UDMA5 : ATA_UDMA4, @@ -459,7 +459,7 @@ static const struct hpt_info hpt370 __devinitdata = { .timings = &hpt37x_timings }; -static const struct hpt_info hpt370a __devinitdata = { +static const struct hpt_info hpt370a __devinitconst = { .chip_name = "HPT370A", .chip_type = HPT370A, .udma_mask = HPT370_ALLOW_ATA100_5 ? ATA_UDMA5 : ATA_UDMA4, @@ -467,7 +467,7 @@ static const struct hpt_info hpt370a __devinitdata = { .timings = &hpt37x_timings }; -static const struct hpt_info hpt374 __devinitdata = { +static const struct hpt_info hpt374 __devinitconst = { .chip_name = "HPT374", .chip_type = HPT374, .udma_mask = ATA_UDMA5, @@ -475,7 +475,7 @@ static const struct hpt_info hpt374 __devinitdata = { .timings = &hpt37x_timings }; -static const struct hpt_info hpt372 __devinitdata = { +static const struct hpt_info hpt372 __devinitconst = { .chip_name = "HPT372", .chip_type = HPT372, .udma_mask = HPT372_ALLOW_ATA133_6 ? ATA_UDMA6 : ATA_UDMA5, @@ -483,7 +483,7 @@ static const struct hpt_info hpt372 __devinitdata = { .timings = &hpt37x_timings }; -static const struct hpt_info hpt372a __devinitdata = { +static const struct hpt_info hpt372a __devinitconst = { .chip_name = "HPT372A", .chip_type = HPT372A, .udma_mask = HPT372_ALLOW_ATA133_6 ? ATA_UDMA6 : ATA_UDMA5, @@ -491,7 +491,7 @@ static const struct hpt_info hpt372a __devinitdata = { .timings = &hpt37x_timings }; -static const struct hpt_info hpt302 __devinitdata = { +static const struct hpt_info hpt302 __devinitconst = { .chip_name = "HPT302", .chip_type = HPT302, .udma_mask = HPT302_ALLOW_ATA133_6 ? ATA_UDMA6 : ATA_UDMA5, @@ -499,7 +499,7 @@ static const struct hpt_info hpt302 __devinitdata = { .timings = &hpt37x_timings }; -static const struct hpt_info hpt371 __devinitdata = { +static const struct hpt_info hpt371 __devinitconst = { .chip_name = "HPT371", .chip_type = HPT371, .udma_mask = HPT371_ALLOW_ATA133_6 ? ATA_UDMA6 : ATA_UDMA5, @@ -507,7 +507,7 @@ static const struct hpt_info hpt371 __devinitdata = { .timings = &hpt37x_timings }; -static const struct hpt_info hpt372n __devinitdata = { +static const struct hpt_info hpt372n __devinitconst = { .chip_name = "HPT372N", .chip_type = HPT372N, .udma_mask = HPT372_ALLOW_ATA133_6 ? ATA_UDMA6 : ATA_UDMA5, @@ -515,7 +515,7 @@ static const struct hpt_info hpt372n __devinitdata = { .timings = &hpt37x_timings }; -static const struct hpt_info hpt302n __devinitdata = { +static const struct hpt_info hpt302n __devinitconst = { .chip_name = "HPT302N", .chip_type = HPT302N, .udma_mask = HPT302_ALLOW_ATA133_6 ? ATA_UDMA6 : ATA_UDMA5, @@ -523,7 +523,7 @@ static const struct hpt_info hpt302n __devinitdata = { .timings = &hpt37x_timings }; -static const struct hpt_info hpt371n __devinitdata = { +static const struct hpt_info hpt371n __devinitconst = { .chip_name = "HPT371N", .chip_type = HPT371N, .udma_mask = HPT371_ALLOW_ATA133_6 ? ATA_UDMA6 : ATA_UDMA5, @@ -1361,7 +1361,7 @@ static const struct ide_dma_ops hpt36x_dma_ops = { .dma_sff_read_status = ide_dma_sff_read_status, }; -static const struct ide_port_info hpt366_chipsets[] __devinitdata = { +static const struct ide_port_info hpt366_chipsets[] __devinitconst = { { /* 0: HPT36x */ .name = DRV_NAME, .init_chipset = init_chipset_hpt366, diff --git a/drivers/ide/ht6560b.c b/drivers/ide/ht6560b.c index 986f2513eab..1e0fd3aa962 100644 --- a/drivers/ide/ht6560b.c +++ b/drivers/ide/ht6560b.c @@ -341,7 +341,7 @@ static const struct ide_port_ops ht6560b_port_ops = { .set_pio_mode = ht6560b_set_pio_mode, }; -static const struct ide_port_info ht6560b_port_info __initdata = { +static const struct ide_port_info ht6560b_port_info __initconst = { .name = DRV_NAME, .chipset = ide_ht6560b, .tp_ops = &ht6560b_tp_ops, diff --git a/drivers/ide/icside.c b/drivers/ide/icside.c index bcb507b0cfd..e640d0ac3af 100644 --- a/drivers/ide/icside.c +++ b/drivers/ide/icside.c @@ -451,7 +451,7 @@ err_free: return ret; } -static const struct ide_port_info icside_v6_port_info __initdata = { +static const struct ide_port_info icside_v6_port_info __initconst = { .init_dma = icside_dma_off_init, .port_ops = &icside_v6_no_dma_port_ops, .host_flags = IDE_HFLAG_SERIALIZE | IDE_HFLAG_MMIO, diff --git a/drivers/ide/ide-pci-generic.c b/drivers/ide/ide-pci-generic.c index 7f56b738d76..dab5b670bfb 100644 --- a/drivers/ide/ide-pci-generic.c +++ b/drivers/ide/ide-pci-generic.c @@ -53,7 +53,7 @@ static const struct ide_port_ops netcell_port_ops = { .udma_mask = ATA_UDMA6, \ } -static const struct ide_port_info generic_chipsets[] __devinitdata = { +static const struct ide_port_info generic_chipsets[] __devinitconst = { /* 0: Unknown */ DECLARE_GENERIC_PCI_DEV(0), diff --git a/drivers/ide/it8172.c b/drivers/ide/it8172.c index 560e66d0765..d5dd180c4b8 100644 --- a/drivers/ide/it8172.c +++ b/drivers/ide/it8172.c @@ -115,7 +115,7 @@ static const struct ide_port_ops it8172_port_ops = { .set_dma_mode = it8172_set_dma_mode, }; -static const struct ide_port_info it8172_port_info __devinitdata = { +static const struct ide_port_info it8172_port_info __devinitconst = { .name = DRV_NAME, .port_ops = &it8172_port_ops, .enablebits = { {0x41, 0x80, 0x80}, {0x00, 0x00, 0x00} }, diff --git a/drivers/ide/it8213.c b/drivers/ide/it8213.c index 46816ba2641..1847aeb5450 100644 --- a/drivers/ide/it8213.c +++ b/drivers/ide/it8213.c @@ -156,7 +156,7 @@ static const struct ide_port_ops it8213_port_ops = { .cable_detect = it8213_cable_detect, }; -static const struct ide_port_info it8213_chipset __devinitdata = { +static const struct ide_port_info it8213_chipset __devinitconst = { .name = DRV_NAME, .enablebits = { {0x41, 0x80, 0x80} }, .port_ops = &it8213_port_ops, diff --git a/drivers/ide/it821x.c b/drivers/ide/it821x.c index 2e3169f2acd..c5611dbca34 100644 --- a/drivers/ide/it821x.c +++ b/drivers/ide/it821x.c @@ -630,7 +630,7 @@ static const struct ide_port_ops it821x_port_ops = { .cable_detect = it821x_cable_detect, }; -static const struct ide_port_info it821x_chipset __devinitdata = { +static const struct ide_port_info it821x_chipset __devinitconst = { .name = DRV_NAME, .init_chipset = init_chipset_it821x, .init_hwif = init_hwif_it821x, diff --git a/drivers/ide/jmicron.c b/drivers/ide/jmicron.c index 74c2c4a6d90..efddd7d9f92 100644 --- a/drivers/ide/jmicron.c +++ b/drivers/ide/jmicron.c @@ -102,7 +102,7 @@ static const struct ide_port_ops jmicron_port_ops = { .cable_detect = jmicron_cable_detect, }; -static const struct ide_port_info jmicron_chipset __devinitdata = { +static const struct ide_port_info jmicron_chipset __devinitconst = { .name = DRV_NAME, .enablebits = { { 0x40, 0x01, 0x01 }, { 0x40, 0x10, 0x10 } }, .port_ops = &jmicron_port_ops, diff --git a/drivers/ide/ns87415.c b/drivers/ide/ns87415.c index 95327a2c242..73f78d872d5 100644 --- a/drivers/ide/ns87415.c +++ b/drivers/ide/ns87415.c @@ -293,7 +293,7 @@ static const struct ide_dma_ops ns87415_dma_ops = { .dma_sff_read_status = superio_dma_sff_read_status, }; -static const struct ide_port_info ns87415_chipset __devinitdata = { +static const struct ide_port_info ns87415_chipset __devinitconst = { .name = DRV_NAME, .init_hwif = init_hwif_ns87415, .tp_ops = &ns87415_tp_ops, diff --git a/drivers/ide/opti621.c b/drivers/ide/opti621.c index 1a53a4c375e..39edc66cb96 100644 --- a/drivers/ide/opti621.c +++ b/drivers/ide/opti621.c @@ -131,7 +131,7 @@ static const struct ide_port_ops opti621_port_ops = { .set_pio_mode = opti621_set_pio_mode, }; -static const struct ide_port_info opti621_chipset __devinitdata = { +static const struct ide_port_info opti621_chipset __devinitconst = { .name = DRV_NAME, .enablebits = { {0x45, 0x80, 0x00}, {0x40, 0x08, 0x00} }, .port_ops = &opti621_port_ops, diff --git a/drivers/ide/pdc202xx_new.c b/drivers/ide/pdc202xx_new.c index 9546fe2a93f..2e5ceb62fb3 100644 --- a/drivers/ide/pdc202xx_new.c +++ b/drivers/ide/pdc202xx_new.c @@ -465,7 +465,7 @@ static const struct ide_port_ops pdcnew_port_ops = { .udma_mask = udma, \ } -static const struct ide_port_info pdcnew_chipsets[] __devinitdata = { +static const struct ide_port_info pdcnew_chipsets[] __devinitconst = { /* 0: PDC202{68,70} */ DECLARE_PDCNEW_DEV(ATA_UDMA5), /* 1: PDC202{69,71,75,76,77} */ DECLARE_PDCNEW_DEV(ATA_UDMA6), }; diff --git a/drivers/ide/pdc202xx_old.c b/drivers/ide/pdc202xx_old.c index 3a35ec6193d..56345109681 100644 --- a/drivers/ide/pdc202xx_old.c +++ b/drivers/ide/pdc202xx_old.c @@ -270,7 +270,7 @@ static const struct ide_dma_ops pdc2026x_dma_ops = { .max_sectors = sectors, \ } -static const struct ide_port_info pdc202xx_chipsets[] __devinitdata = { +static const struct ide_port_info pdc202xx_chipsets[] __devinitconst = { { /* 0: PDC20246 */ .name = DRV_NAME, .init_chipset = init_chipset_pdc202xx, diff --git a/drivers/ide/piix.c b/drivers/ide/piix.c index 1892e81fb00..fe0fd60cfc0 100644 --- a/drivers/ide/piix.c +++ b/drivers/ide/piix.c @@ -344,7 +344,7 @@ static const struct ide_port_ops ich_port_ops = { .udma_mask = udma, \ } -static const struct ide_port_info piix_pci_info[] __devinitdata = { +static const struct ide_port_info piix_pci_info[] __devinitconst = { /* 0: MPIIX */ { /* * MPIIX actually has only a single IDE channel mapped to diff --git a/drivers/ide/qd65xx.c b/drivers/ide/qd65xx.c index e03f4f19c1d..a6fb6a894c7 100644 --- a/drivers/ide/qd65xx.c +++ b/drivers/ide/qd65xx.c @@ -335,7 +335,7 @@ static const struct ide_port_ops qd6580_port_ops = { .set_pio_mode = qd6580_set_pio_mode, }; -static const struct ide_port_info qd65xx_port_info __initdata = { +static const struct ide_port_info qd65xx_port_info __initconst = { .name = DRV_NAME, .tp_ops = &qd65xx_tp_ops, .chipset = ide_qd65xx, diff --git a/drivers/ide/rz1000.c b/drivers/ide/rz1000.c index a6414a884eb..c04173e9fc3 100644 --- a/drivers/ide/rz1000.c +++ b/drivers/ide/rz1000.c @@ -38,7 +38,7 @@ static int __devinit rz1000_disable_readahead(struct pci_dev *dev) } } -static const struct ide_port_info rz1000_chipset __devinitdata = { +static const struct ide_port_info rz1000_chipset __devinitconst = { .name = DRV_NAME, .host_flags = IDE_HFLAG_NO_DMA, }; diff --git a/drivers/ide/sc1200.c b/drivers/ide/sc1200.c index 356b9b504ff..d4758ebe77d 100644 --- a/drivers/ide/sc1200.c +++ b/drivers/ide/sc1200.c @@ -291,7 +291,7 @@ static const struct ide_dma_ops sc1200_dma_ops = { .dma_sff_read_status = ide_dma_sff_read_status, }; -static const struct ide_port_info sc1200_chipset __devinitdata = { +static const struct ide_port_info sc1200_chipset __devinitconst = { .name = DRV_NAME, .port_ops = &sc1200_port_ops, .dma_ops = &sc1200_dma_ops, diff --git a/drivers/ide/scc_pata.c b/drivers/ide/scc_pata.c index b7f5b0c4310..97010381002 100644 --- a/drivers/ide/scc_pata.c +++ b/drivers/ide/scc_pata.c @@ -811,7 +811,7 @@ static const struct ide_dma_ops scc_dma_ops = { .dma_sff_read_status = scc_dma_sff_read_status, }; -static const struct ide_port_info scc_chipset __devinitdata = { +static const struct ide_port_info scc_chipset __devinitconst = { .name = "sccIDE", .init_iops = init_iops_scc, .init_dma = scc_init_dma, diff --git a/drivers/ide/serverworks.c b/drivers/ide/serverworks.c index 35fb8dabb55..24d72ef23df 100644 --- a/drivers/ide/serverworks.c +++ b/drivers/ide/serverworks.c @@ -337,7 +337,7 @@ static const struct ide_port_ops svwks_port_ops = { .cable_detect = svwks_cable_detect, }; -static const struct ide_port_info serverworks_chipsets[] __devinitdata = { +static const struct ide_port_info serverworks_chipsets[] __devinitconst = { { /* 0: OSB4 */ .name = DRV_NAME, .init_chipset = init_chipset_svwks, diff --git a/drivers/ide/siimage.c b/drivers/ide/siimage.c index ddeda444a27..46f7e30d379 100644 --- a/drivers/ide/siimage.c +++ b/drivers/ide/siimage.c @@ -719,7 +719,7 @@ static const struct ide_dma_ops sil_dma_ops = { .udma_mask = ATA_UDMA6, \ } -static const struct ide_port_info siimage_chipsets[] __devinitdata = { +static const struct ide_port_info siimage_chipsets[] __devinitconst = { /* 0: SiI680 */ DECLARE_SII_DEV(&sil_pata_port_ops), /* 1: SiI3112 */ DECLARE_SII_DEV(&sil_sata_port_ops) }; diff --git a/drivers/ide/sis5513.c b/drivers/ide/sis5513.c index 4a002256775..09e61b4c5e9 100644 --- a/drivers/ide/sis5513.c +++ b/drivers/ide/sis5513.c @@ -563,7 +563,7 @@ static const struct ide_port_ops sis_ata133_port_ops = { .cable_detect = sis_cable_detect, }; -static const struct ide_port_info sis5513_chipset __devinitdata = { +static const struct ide_port_info sis5513_chipset __devinitconst = { .name = DRV_NAME, .init_chipset = init_chipset_sis5513, .enablebits = { {0x4a, 0x02, 0x02}, {0x4a, 0x04, 0x04} }, diff --git a/drivers/ide/sl82c105.c b/drivers/ide/sl82c105.c index f21dc2ad768..d051cd224bd 100644 --- a/drivers/ide/sl82c105.c +++ b/drivers/ide/sl82c105.c @@ -299,7 +299,7 @@ static const struct ide_dma_ops sl82c105_dma_ops = { .dma_sff_read_status = ide_dma_sff_read_status, }; -static const struct ide_port_info sl82c105_chipset __devinitdata = { +static const struct ide_port_info sl82c105_chipset __devinitconst = { .name = DRV_NAME, .init_chipset = init_chipset_sl82c105, .enablebits = {{0x40,0x01,0x01}, {0x40,0x10,0x10}}, diff --git a/drivers/ide/slc90e66.c b/drivers/ide/slc90e66.c index 864ffe0e26d..863a5e9283c 100644 --- a/drivers/ide/slc90e66.c +++ b/drivers/ide/slc90e66.c @@ -132,7 +132,7 @@ static const struct ide_port_ops slc90e66_port_ops = { .cable_detect = slc90e66_cable_detect, }; -static const struct ide_port_info slc90e66_chipset __devinitdata = { +static const struct ide_port_info slc90e66_chipset __devinitconst = { .name = DRV_NAME, .enablebits = { {0x41, 0x80, 0x80}, {0x43, 0x80, 0x80} }, .port_ops = &slc90e66_port_ops, diff --git a/drivers/ide/tc86c001.c b/drivers/ide/tc86c001.c index 4799d5c384e..17946785ebf 100644 --- a/drivers/ide/tc86c001.c +++ b/drivers/ide/tc86c001.c @@ -192,7 +192,7 @@ static const struct ide_dma_ops tc86c001_dma_ops = { .dma_sff_read_status = ide_dma_sff_read_status, }; -static const struct ide_port_info tc86c001_chipset __devinitdata = { +static const struct ide_port_info tc86c001_chipset __devinitconst = { .name = DRV_NAME, .init_hwif = init_hwif_tc86c001, .port_ops = &tc86c001_port_ops, diff --git a/drivers/ide/triflex.c b/drivers/ide/triflex.c index 281c9142634..55ce1b80efc 100644 --- a/drivers/ide/triflex.c +++ b/drivers/ide/triflex.c @@ -92,7 +92,7 @@ static const struct ide_port_ops triflex_port_ops = { .set_dma_mode = triflex_set_mode, }; -static const struct ide_port_info triflex_device __devinitdata = { +static const struct ide_port_info triflex_device __devinitconst = { .name = DRV_NAME, .enablebits = {{0x80, 0x01, 0x01}, {0x80, 0x02, 0x02}}, .port_ops = &triflex_port_ops, diff --git a/drivers/ide/trm290.c b/drivers/ide/trm290.c index 4b42ca09153..e494a98a43a 100644 --- a/drivers/ide/trm290.c +++ b/drivers/ide/trm290.c @@ -324,7 +324,7 @@ static struct ide_dma_ops trm290_dma_ops = { .dma_check = trm290_dma_check, }; -static const struct ide_port_info trm290_chipset __devinitdata = { +static const struct ide_port_info trm290_chipset __devinitconst = { .name = DRV_NAME, .init_hwif = init_hwif_trm290, .tp_ops = &trm290_tp_ops, diff --git a/drivers/ide/tx4938ide.c b/drivers/ide/tx4938ide.c index 7002765b593..91d49dd957e 100644 --- a/drivers/ide/tx4938ide.c +++ b/drivers/ide/tx4938ide.c @@ -117,7 +117,7 @@ static const struct ide_port_ops tx4938ide_port_ops = { .set_pio_mode = tx4938ide_set_pio_mode, }; -static const struct ide_port_info tx4938ide_port_info __initdata = { +static const struct ide_port_info tx4938ide_port_info __initconst = { .port_ops = &tx4938ide_port_ops, #ifdef __BIG_ENDIAN .tp_ops = &tx4938ide_tp_ops, diff --git a/drivers/ide/tx4939ide.c b/drivers/ide/tx4939ide.c index 71c23195497..c0ab800b7bb 100644 --- a/drivers/ide/tx4939ide.c +++ b/drivers/ide/tx4939ide.c @@ -522,7 +522,7 @@ static const struct ide_dma_ops tx4939ide_dma_ops = { .dma_sff_read_status = tx4939ide_dma_sff_read_status, }; -static const struct ide_port_info tx4939ide_port_info __initdata = { +static const struct ide_port_info tx4939ide_port_info __initconst = { .init_hwif = tx4939ide_init_hwif, .init_dma = tx4939ide_init_dma, .port_ops = &tx4939ide_port_ops, diff --git a/drivers/ide/umc8672.c b/drivers/ide/umc8672.c index 5cfb7812066..3aa0fea0f3d 100644 --- a/drivers/ide/umc8672.c +++ b/drivers/ide/umc8672.c @@ -128,7 +128,7 @@ static const struct ide_port_ops umc8672_port_ops = { .set_pio_mode = umc_set_pio_mode, }; -static const struct ide_port_info umc8672_port_info __initdata = { +static const struct ide_port_info umc8672_port_info __initconst = { .name = DRV_NAME, .chipset = ide_umc8672, .port_ops = &umc8672_port_ops, diff --git a/drivers/ide/via82cxxx.c b/drivers/ide/via82cxxx.c index f46f49cfcc2..eb7767864d1 100644 --- a/drivers/ide/via82cxxx.c +++ b/drivers/ide/via82cxxx.c @@ -403,7 +403,7 @@ static const struct ide_port_ops via_port_ops = { .cable_detect = via82cxxx_cable_detect, }; -static const struct ide_port_info via82cxxx_chipset __devinitdata = { +static const struct ide_port_info via82cxxx_chipset __devinitconst = { .name = DRV_NAME, .init_chipset = init_chipset_via82cxxx, .enablebits = { { 0x40, 0x02, 0x02 }, { 0x40, 0x01, 0x01 } }, diff --git a/drivers/infiniband/core/cm.c b/drivers/infiniband/core/cm.c index d67999f6e34..394fea2ba1b 100644 --- a/drivers/infiniband/core/cm.c +++ b/drivers/infiniband/core/cm.c @@ -390,7 +390,7 @@ static int cm_alloc_id(struct cm_id_private *cm_id_priv) ret = idr_get_new_above(&cm.local_id_table, cm_id_priv, next_id, &id); if (!ret) - next_id = ((unsigned) id + 1) & MAX_ID_MASK; + next_id = ((unsigned) id + 1) & MAX_IDR_MASK; spin_unlock_irqrestore(&cm.lock, flags); } while( (ret == -EAGAIN) && idr_pre_get(&cm.local_id_table, GFP_KERNEL) ); diff --git a/drivers/infiniband/hw/mlx4/cm.c b/drivers/infiniband/hw/mlx4/cm.c index e25e4dafb8a..80079e5a2e3 100644 --- a/drivers/infiniband/hw/mlx4/cm.c +++ b/drivers/infiniband/hw/mlx4/cm.c @@ -225,7 +225,7 @@ id_map_alloc(struct ib_device *ibdev, int slave_id, u32 sl_cm_id) ret = idr_get_new_above(&sriov->pv_id_table, ent, next_id, &id); if (!ret) { - next_id = ((unsigned) id + 1) & MAX_ID_MASK; + next_id = ((unsigned) id + 1) & MAX_IDR_MASK; ent->pv_cm_id = (u32)id; sl_id_map_add(ibdev, ent); } diff --git a/drivers/macintosh/macio_asic.c b/drivers/macintosh/macio_asic.c index 20e5c2cda43..ef87310b766 100644 --- a/drivers/macintosh/macio_asic.c +++ b/drivers/macintosh/macio_asic.c @@ -748,7 +748,7 @@ static void __devexit macio_pci_remove(struct pci_dev* pdev) * MacIO is matched against any Apple ID, it's probe() function * will then decide wether it applies or not */ -static const struct pci_device_id __devinitdata pci_ids [] = { { +static const struct pci_device_id __devinitconst pci_ids[] = { { .vendor = PCI_VENDOR_ID_APPLE, .device = PCI_ANY_ID, .subvendor = PCI_ANY_ID, diff --git a/drivers/mfd/wm8994-core.c b/drivers/mfd/wm8994-core.c index 3d6d9beb18d..8fefc961ec0 100644 --- a/drivers/mfd/wm8994-core.c +++ b/drivers/mfd/wm8994-core.c @@ -374,21 +374,21 @@ static int wm8994_ldo_in_use(struct wm8994_pdata *pdata, int ldo) } #endif -static const __devinitdata struct reg_default wm8994_revc_patch[] = { +static const __devinitconst struct reg_default wm8994_revc_patch[] = { { 0x102, 0x3 }, { 0x56, 0x3 }, { 0x817, 0x0 }, { 0x102, 0x0 }, }; -static const __devinitdata struct reg_default wm8958_reva_patch[] = { +static const __devinitconst struct reg_default wm8958_reva_patch[] = { { 0x102, 0x3 }, { 0xcb, 0x81 }, { 0x817, 0x0 }, { 0x102, 0x0 }, }; -static const __devinitdata struct reg_default wm1811_reva_patch[] = { +static const __devinitconst struct reg_default wm1811_reva_patch[] = { { 0x102, 0x3 }, { 0x56, 0xc07 }, { 0x5d, 0x7e }, diff --git a/drivers/mmc/host/sdhci-pci.c b/drivers/mmc/host/sdhci-pci.c index 504da715a41..9722d43d614 100644 --- a/drivers/mmc/host/sdhci-pci.c +++ b/drivers/mmc/host/sdhci-pci.c @@ -653,7 +653,7 @@ static const struct sdhci_pci_fixes sdhci_via = { .probe = via_probe, }; -static const struct pci_device_id pci_ids[] __devinitdata = { +static const struct pci_device_id pci_ids[] __devinitconst = { { .vendor = PCI_VENDOR_ID_RICOH, .device = PCI_DEVICE_ID_RICOH_R5C822, diff --git a/drivers/net/can/slcan.c b/drivers/net/can/slcan.c index 034c16b60e9..adc3708d882 100644 --- a/drivers/net/can/slcan.c +++ b/drivers/net/can/slcan.c @@ -56,7 +56,7 @@ #include <linux/kernel.h> #include <linux/can.h> -static __initdata const char banner[] = +static __initconst const char banner[] = KERN_INFO "slcan: serial line CAN interface driver\n"; MODULE_ALIAS_LDISC(N_SLCAN); diff --git a/drivers/net/can/vcan.c b/drivers/net/can/vcan.c index 4f93c0be005..0a2a5ee79a1 100644 --- a/drivers/net/can/vcan.c +++ b/drivers/net/can/vcan.c @@ -49,7 +49,7 @@ #include <linux/slab.h> #include <net/rtnetlink.h> -static __initdata const char banner[] = +static __initconst const char banner[] = KERN_INFO "vcan: Virtual CAN interface driver\n"; MODULE_DESCRIPTION("virtual CAN interface"); diff --git a/drivers/net/ethernet/8390/ne3210.c b/drivers/net/ethernet/8390/ne3210.c index a2f8b2b8e27..e3f57427d5c 100644 --- a/drivers/net/ethernet/8390/ne3210.c +++ b/drivers/net/ethernet/8390/ne3210.c @@ -81,7 +81,7 @@ static void ne3210_block_output(struct net_device *dev, int count, const unsigne static unsigned char irq_map[] __initdata = {15, 12, 11, 10, 9, 7, 5, 3}; static unsigned int shmem_map[] __initdata = {0xff0, 0xfe0, 0xfff0, 0xd8, 0xffe0, 0xffc0, 0xd0, 0x0}; -static const char *ifmap[] __initdata = {"UTP", "?", "BNC", "AUI"}; +static const char * const ifmap[] __initconst = {"UTP", "?", "BNC", "AUI"}; static int ifmap_val[] __initdata = { IF_PORT_10BASET, IF_PORT_UNKNOWN, diff --git a/drivers/net/ethernet/adaptec/starfire.c b/drivers/net/ethernet/adaptec/starfire.c index d920a529ba2..5b65992c2a0 100644 --- a/drivers/net/ethernet/adaptec/starfire.c +++ b/drivers/net/ethernet/adaptec/starfire.c @@ -295,7 +295,7 @@ MODULE_DEVICE_TABLE(pci, starfire_pci_tbl); static const struct chip_info { const char *name; int drv_flags; -} netdrv_tbl[] __devinitdata = { +} netdrv_tbl[] __devinitconst = { { "Adaptec Starfire 6915", CanHaveMII }, }; diff --git a/drivers/net/ethernet/atheros/atl1c/atl1c_main.c b/drivers/net/ethernet/atheros/atl1c/atl1c_main.c index 55a2e379505..d19f82f7597 100644 --- a/drivers/net/ethernet/atheros/atl1c/atl1c_main.c +++ b/drivers/net/ethernet/atheros/atl1c/atl1c_main.c @@ -702,7 +702,7 @@ struct atl1c_platform_patch { u32 patch_flag; #define ATL1C_LINK_PATCH 0x1 }; -static const struct atl1c_platform_patch plats[] __devinitdata = { +static const struct atl1c_platform_patch plats[] __devinitconst = { {0x2060, 0xC1, 0x1019, 0x8152, 0x1}, {0x2060, 0xC1, 0x1019, 0x2060, 0x1}, {0x2060, 0xC1, 0x1019, 0xE000, 0x1}, diff --git a/drivers/net/ethernet/atheros/atlx/atl2.c b/drivers/net/ethernet/atheros/atlx/atl2.c index 57d64b80fd7..623dd8635c4 100644 --- a/drivers/net/ethernet/atheros/atlx/atl2.c +++ b/drivers/net/ethernet/atheros/atlx/atl2.c @@ -2845,7 +2845,7 @@ static void atl2_force_ps(struct atl2_hw *hw) */ #define ATL2_PARAM(X, desc) \ - static const int __devinitdata X[ATL2_MAX_NIC + 1] = ATL2_PARAM_INIT; \ + static const int __devinitconst X[ATL2_MAX_NIC + 1] = ATL2_PARAM_INIT; \ MODULE_PARM(X, "1-" __MODULE_STRING(ATL2_MAX_NIC) "i"); \ MODULE_PARM_DESC(X, desc); #else diff --git a/drivers/net/ethernet/dec/tulip/de2104x.c b/drivers/net/ethernet/dec/tulip/de2104x.c index 61cc0934286..77335853ac3 100644 --- a/drivers/net/ethernet/dec/tulip/de2104x.c +++ b/drivers/net/ethernet/dec/tulip/de2104x.c @@ -661,9 +661,6 @@ static netdev_tx_t de_start_xmit (struct sk_buff *skb, new frame, not around filling de->setup_frame. This is non-deterministic when re-entered but still correct. */ -#undef set_bit_le -#define set_bit_le(i,p) do { ((char *)(p))[(i)/8] |= (1<<((i)%8)); } while(0) - static void build_setup_frame_hash(u16 *setup_frm, struct net_device *dev) { struct de_private *de = netdev_priv(dev); @@ -673,12 +670,12 @@ static void build_setup_frame_hash(u16 *setup_frm, struct net_device *dev) u16 *eaddrs; memset(hash_table, 0, sizeof(hash_table)); - set_bit_le(255, hash_table); /* Broadcast entry */ + __set_bit_le(255, hash_table); /* Broadcast entry */ /* This should work on big-endian machines as well. */ netdev_for_each_mc_addr(ha, dev) { int index = ether_crc_le(ETH_ALEN, ha->addr) & 0x1ff; - set_bit_le(index, hash_table); + __set_bit_le(index, hash_table); } for (i = 0; i < 32; i++) { diff --git a/drivers/net/ethernet/dec/tulip/eeprom.c b/drivers/net/ethernet/dec/tulip/eeprom.c index ed7d1dcd956..44f7e8e82d8 100644 --- a/drivers/net/ethernet/dec/tulip/eeprom.c +++ b/drivers/net/ethernet/dec/tulip/eeprom.c @@ -79,7 +79,7 @@ static struct eeprom_fixup eeprom_fixups[] __devinitdata = { {NULL}}; -static const char *block_name[] __devinitdata = { +static const char *const block_name[] __devinitconst = { "21140 non-MII", "21140 MII PHY", "21142 Serial PHY", diff --git a/drivers/net/ethernet/dec/tulip/tulip_core.c b/drivers/net/ethernet/dec/tulip/tulip_core.c index c4f37aca226..885700a1997 100644 --- a/drivers/net/ethernet/dec/tulip/tulip_core.c +++ b/drivers/net/ethernet/dec/tulip/tulip_core.c @@ -1010,9 +1010,6 @@ static int private_ioctl (struct net_device *dev, struct ifreq *rq, int cmd) new frame, not around filling tp->setup_frame. This is non-deterministic when re-entered but still correct. */ -#undef set_bit_le -#define set_bit_le(i,p) do { ((char *)(p))[(i)/8] |= (1<<((i)%8)); } while(0) - static void build_setup_frame_hash(u16 *setup_frm, struct net_device *dev) { struct tulip_private *tp = netdev_priv(dev); @@ -1022,12 +1019,12 @@ static void build_setup_frame_hash(u16 *setup_frm, struct net_device *dev) u16 *eaddrs; memset(hash_table, 0, sizeof(hash_table)); - set_bit_le(255, hash_table); /* Broadcast entry */ + __set_bit_le(255, hash_table); /* Broadcast entry */ /* This should work on big-endian machines as well. */ netdev_for_each_mc_addr(ha, dev) { int index = ether_crc_le(ETH_ALEN, ha->addr) & 0x1ff; - set_bit_le(index, hash_table); + __set_bit_le(index, hash_table); } for (i = 0; i < 32; i++) { *setup_frm++ = hash_table[i]; diff --git a/drivers/net/ethernet/dec/tulip/winbond-840.c b/drivers/net/ethernet/dec/tulip/winbond-840.c index 4d1ffca83c8..7c1ec4d7920 100644 --- a/drivers/net/ethernet/dec/tulip/winbond-840.c +++ b/drivers/net/ethernet/dec/tulip/winbond-840.c @@ -236,7 +236,7 @@ struct pci_id_info { int drv_flags; /* Driver use, intended as capability flags. */ }; -static const struct pci_id_info pci_id_tbl[] __devinitdata = { +static const struct pci_id_info pci_id_tbl[] __devinitconst = { { /* Sometime a Level-One switch card. */ "Winbond W89c840", CanHaveMII | HasBrokenTx | FDXOnNoMII}, { "Winbond W89c840", CanHaveMII | HasBrokenTx}, diff --git a/drivers/net/ethernet/dlink/sundance.c b/drivers/net/ethernet/dlink/sundance.c index d7bb52a7bda..3b83588e51f 100644 --- a/drivers/net/ethernet/dlink/sundance.c +++ b/drivers/net/ethernet/dlink/sundance.c @@ -218,7 +218,7 @@ enum { struct pci_id_info { const char *name; }; -static const struct pci_id_info pci_id_tbl[] __devinitdata = { +static const struct pci_id_info pci_id_tbl[] __devinitconst = { {"D-Link DFE-550TX FAST Ethernet Adapter"}, {"D-Link DFE-550FX 100Mbps Fiber-optics Adapter"}, {"D-Link DFE-580TX 4 port Server Adapter"}, diff --git a/drivers/net/ethernet/fealnx.c b/drivers/net/ethernet/fealnx.c index 9d71c9cc300..0e4a0ac86aa 100644 --- a/drivers/net/ethernet/fealnx.c +++ b/drivers/net/ethernet/fealnx.c @@ -150,7 +150,7 @@ struct chip_info { int flags; }; -static const struct chip_info skel_netdrv_tbl[] __devinitdata = { +static const struct chip_info skel_netdrv_tbl[] __devinitconst = { { "100/10M Ethernet PCI Adapter", HAS_MII_XCVR }, { "100/10M Ethernet PCI Adapter", HAS_CHIP_XCVR }, { "1000/100/10M Ethernet PCI Adapter", HAS_MII_XCVR }, diff --git a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_hw.c b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_hw.c index b528e52a8ee..2a0c9dc48eb 100644 --- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_hw.c +++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_hw.c @@ -38,7 +38,7 @@ static inline void writeq(u64 val, void __iomem *addr) } #endif -static const struct crb_128M_2M_block_map +static struct crb_128M_2M_block_map crb_128M_2M_map[64] __cacheline_aligned_in_smp = { {{{0, 0, 0, 0} } }, /* 0: PCI */ {{{1, 0x0100000, 0x0102000, 0x120000}, /* 1: PCIE */ diff --git a/drivers/net/ethernet/realtek/8139too.c b/drivers/net/ethernet/realtek/8139too.c index 1d83565cc6a..3ed7add23c1 100644 --- a/drivers/net/ethernet/realtek/8139too.c +++ b/drivers/net/ethernet/realtek/8139too.c @@ -228,7 +228,7 @@ typedef enum { static const struct { const char *name; u32 hw_flags; -} board_info[] __devinitdata = { +} board_info[] __devinitconst = { { "RealTek RTL8139", RTL8139_CAPS }, { "RealTek RTL8129", RTL8129_CAPS }, }; diff --git a/drivers/net/ethernet/sfc/efx.c b/drivers/net/ethernet/sfc/efx.c index 96bd980e828..4f86d0cd516 100644 --- a/drivers/net/ethernet/sfc/efx.c +++ b/drivers/net/ethernet/sfc/efx.c @@ -2019,14 +2019,14 @@ static void efx_set_rx_mode(struct net_device *net_dev) netdev_for_each_mc_addr(ha, net_dev) { crc = ether_crc_le(ETH_ALEN, ha->addr); bit = crc & (EFX_MCAST_HASH_ENTRIES - 1); - set_bit_le(bit, mc_hash->byte); + __set_bit_le(bit, mc_hash); } /* Broadcast packets go through the multicast hash filter. * ether_crc_le() of the broadcast address is 0xbe2612ff * so we always add bit 0xff to the mask. */ - set_bit_le(0xff, mc_hash->byte); + __set_bit_le(0xff, mc_hash); } if (efx->port_enabled) diff --git a/drivers/net/ethernet/sfc/net_driver.h b/drivers/net/ethernet/sfc/net_driver.h index c1a010cda89..576a3109116 100644 --- a/drivers/net/ethernet/sfc/net_driver.h +++ b/drivers/net/ethernet/sfc/net_driver.h @@ -1101,18 +1101,6 @@ static inline struct efx_rx_buffer *efx_rx_buffer(struct efx_rx_queue *rx_queue, return &rx_queue->buffer[index]; } -/* Set bit in a little-endian bitfield */ -static inline void set_bit_le(unsigned nr, unsigned char *addr) -{ - addr[nr / 8] |= (1 << (nr % 8)); -} - -/* Clear bit in a little-endian bitfield */ -static inline void clear_bit_le(unsigned nr, unsigned char *addr) -{ - addr[nr / 8] &= ~(1 << (nr % 8)); -} - /** * EFX_MAX_FRAME_LEN - calculate maximum frame length diff --git a/drivers/net/ethernet/sfc/nic.c b/drivers/net/ethernet/sfc/nic.c index cdff40b6572..aab7cacb2e3 100644 --- a/drivers/net/ethernet/sfc/nic.c +++ b/drivers/net/ethernet/sfc/nic.c @@ -472,9 +472,9 @@ void efx_nic_init_tx(struct efx_tx_queue *tx_queue) efx_reado(efx, ®, FR_AA_TX_CHKSM_CFG); if (tx_queue->queue & EFX_TXQ_TYPE_OFFLOAD) - clear_bit_le(tx_queue->queue, (void *)®); + __clear_bit_le(tx_queue->queue, ®); else - set_bit_le(tx_queue->queue, (void *)®); + __set_bit_le(tx_queue->queue, ®); efx_writeo(efx, ®, FR_AA_TX_CHKSM_CFG); } diff --git a/drivers/net/ethernet/sis/sis190.c b/drivers/net/ethernet/sis/sis190.c index 4613591b43e..d8166012b7d 100644 --- a/drivers/net/ethernet/sis/sis190.c +++ b/drivers/net/ethernet/sis/sis190.c @@ -1618,7 +1618,7 @@ static int __devinit sis190_get_mac_addr_from_eeprom(struct pci_dev *pdev, static int __devinit sis190_get_mac_addr_from_apc(struct pci_dev *pdev, struct net_device *dev) { - static const u16 __devinitdata ids[] = { 0x0965, 0x0966, 0x0968 }; + static const u16 __devinitconst ids[] = { 0x0965, 0x0966, 0x0968 }; struct sis190_private *tp = netdev_priv(dev); struct pci_dev *isa_bridge; u8 reg, tmp8; diff --git a/drivers/net/hamradio/6pack.c b/drivers/net/hamradio/6pack.c index 64783a0d545..1450e33fc25 100644 --- a/drivers/net/hamradio/6pack.c +++ b/drivers/net/hamradio/6pack.c @@ -811,9 +811,9 @@ static struct tty_ldisc_ops sp_ldisc = { /* Initialize 6pack control device -- register 6pack line discipline */ -static const char msg_banner[] __initdata = KERN_INFO \ +static const char msg_banner[] __initconst = KERN_INFO \ "AX.25: 6pack driver, " SIXPACK_VERSION "\n"; -static const char msg_regfail[] __initdata = KERN_ERR \ +static const char msg_regfail[] __initconst = KERN_ERR \ "6pack: can't register line discipline (err = %d)\n"; static int __init sixpack_init_driver(void) @@ -829,7 +829,7 @@ static int __init sixpack_init_driver(void) return status; } -static const char msg_unregfail[] __exitdata = KERN_ERR \ +static const char msg_unregfail[] = KERN_ERR \ "6pack: can't unregister line discipline (err = %d)\n"; static void __exit sixpack_exit_driver(void) diff --git a/drivers/net/hamradio/bpqether.c b/drivers/net/hamradio/bpqether.c index 76d54774ba8..c2e5497397d 100644 --- a/drivers/net/hamradio/bpqether.c +++ b/drivers/net/hamradio/bpqether.c @@ -87,7 +87,7 @@ #include <linux/bpqether.h> -static const char banner[] __initdata = KERN_INFO \ +static const char banner[] __initconst = KERN_INFO \ "AX.25: bpqether driver version 004\n"; static char bcast_addr[6]={0xFF,0xFF,0xFF,0xFF,0xFF,0xFF}; diff --git a/drivers/net/hamradio/mkiss.c b/drivers/net/hamradio/mkiss.c index 2c0894a92ab..8e01c457015 100644 --- a/drivers/net/hamradio/mkiss.c +++ b/drivers/net/hamradio/mkiss.c @@ -997,9 +997,9 @@ static struct tty_ldisc_ops ax_ldisc = { .write_wakeup = mkiss_write_wakeup }; -static const char banner[] __initdata = KERN_INFO \ +static const char banner[] __initconst = KERN_INFO \ "mkiss: AX.25 Multikiss, Hans Albas PE1AYX\n"; -static const char msg_regfail[] __initdata = KERN_ERR \ +static const char msg_regfail[] __initconst = KERN_ERR \ "mkiss: can't register line discipline (err = %d)\n"; static int __init mkiss_init_driver(void) @@ -1015,7 +1015,7 @@ static int __init mkiss_init_driver(void) return status; } -static const char msg_unregfail[] __exitdata = KERN_ERR \ +static const char msg_unregfail[] = KERN_ERR \ "mkiss: can't unregister line discipline (err = %d)\n"; static void __exit mkiss_exit_driver(void) diff --git a/drivers/net/hamradio/scc.c b/drivers/net/hamradio/scc.c index efc6c97163a..1b4a47bd32b 100644 --- a/drivers/net/hamradio/scc.c +++ b/drivers/net/hamradio/scc.c @@ -182,7 +182,7 @@ #include "z8530.h" -static const char banner[] __initdata = KERN_INFO \ +static const char banner[] __initconst = KERN_INFO \ "AX.25: Z8530 SCC driver version "VERSION".dl1bke\n"; static void t_dwait(unsigned long); diff --git a/drivers/net/hamradio/yam.c b/drivers/net/hamradio/yam.c index 5a6412ecce7..c6645f1017a 100644 --- a/drivers/net/hamradio/yam.c +++ b/drivers/net/hamradio/yam.c @@ -76,7 +76,7 @@ /* --------------------------------------------------------------------- */ static const char yam_drvname[] = "yam"; -static const char yam_drvinfo[] __initdata = KERN_INFO \ +static const char yam_drvinfo[] __initconst = KERN_INFO \ "YAM driver version 0.8 by F1OAT/F6FBB\n"; /* --------------------------------------------------------------------- */ diff --git a/drivers/net/rionet.c b/drivers/net/rionet.c index 91d25888a1b..d8b9b1e8ee0 100644 --- a/drivers/net/rionet.c +++ b/drivers/net/rionet.c @@ -26,7 +26,7 @@ #include <linux/ethtool.h> #define DRV_NAME "rionet" -#define DRV_VERSION "0.2" +#define DRV_VERSION "0.3" #define DRV_AUTHOR "Matt Porter <mporter@kernel.crashing.org>" #define DRV_DESC "Ethernet over RapidIO" @@ -47,8 +47,7 @@ MODULE_LICENSE("GPL"); #define RIONET_TX_RING_SIZE CONFIG_RIONET_TX_SIZE #define RIONET_RX_RING_SIZE CONFIG_RIONET_RX_SIZE - -static LIST_HEAD(rionet_peers); +#define RIONET_MAX_NETS 8 struct rionet_private { struct rio_mport *mport; @@ -69,16 +68,14 @@ struct rionet_peer { struct resource *res; }; -static int rionet_check = 0; -static int rionet_capable = 1; +struct rionet_net { + struct net_device *ndev; + struct list_head peers; + struct rio_dev **active; + int nact; /* number of active peers */ +}; -/* - * This is a fast lookup table for translating TX - * Ethernet packets into a destination RIO device. It - * could be made into a hash table to save memory depending - * on system trade-offs. - */ -static struct rio_dev **rionet_active; +static struct rionet_net nets[RIONET_MAX_NETS]; #define is_rionet_capable(src_ops, dst_ops) \ ((src_ops & RIO_SRC_OPS_DATA_MSG) && \ @@ -175,6 +172,7 @@ static int rionet_start_xmit(struct sk_buff *skb, struct net_device *ndev) struct ethhdr *eth = (struct ethhdr *)skb->data; u16 destid; unsigned long flags; + int add_num = 1; local_irq_save(flags); if (!spin_trylock(&rnet->tx_lock)) { @@ -182,7 +180,10 @@ static int rionet_start_xmit(struct sk_buff *skb, struct net_device *ndev) return NETDEV_TX_LOCKED; } - if ((rnet->tx_cnt + 1) > RIONET_TX_RING_SIZE) { + if (is_multicast_ether_addr(eth->h_dest)) + add_num = nets[rnet->mport->id].nact; + + if ((rnet->tx_cnt + add_num) > RIONET_TX_RING_SIZE) { netif_stop_queue(ndev); spin_unlock_irqrestore(&rnet->tx_lock, flags); printk(KERN_ERR "%s: BUG! Tx Ring full when queue awake!\n", @@ -191,15 +192,22 @@ static int rionet_start_xmit(struct sk_buff *skb, struct net_device *ndev) } if (is_multicast_ether_addr(eth->h_dest)) { + int count = 0; + for (i = 0; i < RIO_MAX_ROUTE_ENTRIES(rnet->mport->sys_size); i++) - if (rionet_active[i]) + if (nets[rnet->mport->id].active[i]) { rionet_queue_tx_msg(skb, ndev, - rionet_active[i]); + nets[rnet->mport->id].active[i]); + if (count) + atomic_inc(&skb->users); + count++; + } } else if (RIONET_MAC_MATCH(eth->h_dest)) { destid = RIONET_GET_DESTID(eth->h_dest); - if (rionet_active[destid]) - rionet_queue_tx_msg(skb, ndev, rionet_active[destid]); + if (nets[rnet->mport->id].active[destid]) + rionet_queue_tx_msg(skb, ndev, + nets[rnet->mport->id].active[destid]); } spin_unlock_irqrestore(&rnet->tx_lock, flags); @@ -218,16 +226,21 @@ static void rionet_dbell_event(struct rio_mport *mport, void *dev_id, u16 sid, u printk(KERN_INFO "%s: doorbell sid %4.4x tid %4.4x info %4.4x", DRV_NAME, sid, tid, info); if (info == RIONET_DOORBELL_JOIN) { - if (!rionet_active[sid]) { - list_for_each_entry(peer, &rionet_peers, node) { - if (peer->rdev->destid == sid) - rionet_active[sid] = peer->rdev; + if (!nets[rnet->mport->id].active[sid]) { + list_for_each_entry(peer, + &nets[rnet->mport->id].peers, node) { + if (peer->rdev->destid == sid) { + nets[rnet->mport->id].active[sid] = + peer->rdev; + nets[rnet->mport->id].nact++; + } } rio_mport_send_doorbell(mport, sid, RIONET_DOORBELL_JOIN); } } else if (info == RIONET_DOORBELL_LEAVE) { - rionet_active[sid] = NULL; + nets[rnet->mport->id].active[sid] = NULL; + nets[rnet->mport->id].nact--; } else { if (netif_msg_intr(rnet)) printk(KERN_WARNING "%s: unhandled doorbell\n", @@ -321,7 +334,8 @@ static int rionet_open(struct net_device *ndev) netif_carrier_on(ndev); netif_start_queue(ndev); - list_for_each_entry_safe(peer, tmp, &rionet_peers, node) { + list_for_each_entry_safe(peer, tmp, + &nets[rnet->mport->id].peers, node) { if (!(peer->res = rio_request_outb_dbell(peer->rdev, RIONET_DOORBELL_JOIN, RIONET_DOORBELL_LEAVE))) @@ -346,7 +360,7 @@ static int rionet_close(struct net_device *ndev) int i; if (netif_msg_ifup(rnet)) - printk(KERN_INFO "%s: close\n", DRV_NAME); + printk(KERN_INFO "%s: close %s\n", DRV_NAME, ndev->name); netif_stop_queue(ndev); netif_carrier_off(ndev); @@ -354,10 +368,11 @@ static int rionet_close(struct net_device *ndev) for (i = 0; i < RIONET_RX_RING_SIZE; i++) kfree_skb(rnet->rx_skb[i]); - list_for_each_entry_safe(peer, tmp, &rionet_peers, node) { - if (rionet_active[peer->rdev->destid]) { + list_for_each_entry_safe(peer, tmp, + &nets[rnet->mport->id].peers, node) { + if (nets[rnet->mport->id].active[peer->rdev->destid]) { rio_send_doorbell(peer->rdev, RIONET_DOORBELL_LEAVE); - rionet_active[peer->rdev->destid] = NULL; + nets[rnet->mport->id].active[peer->rdev->destid] = NULL; } rio_release_outb_dbell(peer->rdev, peer->res); } @@ -373,17 +388,21 @@ static int rionet_close(struct net_device *ndev) static void rionet_remove(struct rio_dev *rdev) { struct net_device *ndev = rio_get_drvdata(rdev); + unsigned char netid = rdev->net->hport->id; struct rionet_peer *peer, *tmp; - free_pages((unsigned long)rionet_active, get_order(sizeof(void *) * - RIO_MAX_ROUTE_ENTRIES(rdev->net->hport->sys_size))); unregister_netdev(ndev); - free_netdev(ndev); - list_for_each_entry_safe(peer, tmp, &rionet_peers, node) { + free_pages((unsigned long)nets[netid].active, get_order(sizeof(void *) * + RIO_MAX_ROUTE_ENTRIES(rdev->net->hport->sys_size))); + nets[netid].active = NULL; + + list_for_each_entry_safe(peer, tmp, &nets[netid].peers, node) { list_del(&peer->node); kfree(peer); } + + free_netdev(ndev); } static void rionet_get_drvinfo(struct net_device *ndev, @@ -435,13 +454,13 @@ static int rionet_setup_netdev(struct rio_mport *mport, struct net_device *ndev) const size_t rionet_active_bytes = sizeof(void *) * RIO_MAX_ROUTE_ENTRIES(mport->sys_size); - rionet_active = (struct rio_dev **)__get_free_pages(GFP_KERNEL, - get_order(rionet_active_bytes)); - if (!rionet_active) { + nets[mport->id].active = (struct rio_dev **)__get_free_pages(GFP_KERNEL, + get_order(rionet_active_bytes)); + if (!nets[mport->id].active) { rc = -ENOMEM; goto out; } - memset((void *)rionet_active, 0, rionet_active_bytes); + memset((void *)nets[mport->id].active, 0, rionet_active_bytes); /* Set up private area */ rnet = netdev_priv(ndev); @@ -470,60 +489,62 @@ static int rionet_setup_netdev(struct rio_mport *mport, struct net_device *ndev) if (rc != 0) goto out; - printk("%s: %s %s Version %s, MAC %pM\n", + printk(KERN_INFO "%s: %s %s Version %s, MAC %pM, %s\n", ndev->name, DRV_NAME, DRV_DESC, DRV_VERSION, - ndev->dev_addr); + ndev->dev_addr, + mport->name); out: return rc; } -/* - * XXX Make multi-net safe - */ +static unsigned long net_table[RIONET_MAX_NETS/sizeof(unsigned long) + 1]; + static int rionet_probe(struct rio_dev *rdev, const struct rio_device_id *id) { int rc = -ENODEV; u32 lsrc_ops, ldst_ops; struct rionet_peer *peer; struct net_device *ndev = NULL; + unsigned char netid = rdev->net->hport->id; + int oldnet; - /* If local device is not rionet capable, give up quickly */ - if (!rionet_capable) - goto out; + if (netid >= RIONET_MAX_NETS) + return rc; - /* Allocate our net_device structure */ - ndev = alloc_etherdev(sizeof(struct rionet_private)); - if (ndev == NULL) { - rc = -ENOMEM; - goto out; - } + oldnet = test_and_set_bit(netid, net_table); /* * First time through, make sure local device is rionet - * capable, setup netdev, and set flags so this is skipped - * on later probes + * capable, setup netdev (will be skipped on later probes) */ - if (!rionet_check) { + if (!oldnet) { rio_local_read_config_32(rdev->net->hport, RIO_SRC_OPS_CAR, &lsrc_ops); rio_local_read_config_32(rdev->net->hport, RIO_DST_OPS_CAR, &ldst_ops); if (!is_rionet_capable(lsrc_ops, ldst_ops)) { printk(KERN_ERR - "%s: local device is not network capable\n", - DRV_NAME); - rionet_check = 1; - rionet_capable = 0; + "%s: local device %s is not network capable\n", + DRV_NAME, rdev->net->hport->name); goto out; } + /* Allocate our net_device structure */ + ndev = alloc_etherdev(sizeof(struct rionet_private)); + if (ndev == NULL) { + rc = -ENOMEM; + goto out; + } + nets[netid].ndev = ndev; rc = rionet_setup_netdev(rdev->net->hport, ndev); - rionet_check = 1; - } + INIT_LIST_HEAD(&nets[netid].peers); + nets[netid].nact = 0; + } else if (nets[netid].ndev == NULL) + goto out; /* * If the remote device has mailbox/doorbell capabilities, @@ -535,10 +556,10 @@ static int rionet_probe(struct rio_dev *rdev, const struct rio_device_id *id) goto out; } peer->rdev = rdev; - list_add_tail(&peer->node, &rionet_peers); + list_add_tail(&peer->node, &nets[netid].peers); } - rio_set_drvdata(rdev, ndev); + rio_set_drvdata(rdev, nets[netid].ndev); out: return rc; diff --git a/drivers/net/wan/z85230.c b/drivers/net/wan/z85230.c index 0e576906170..feacc3b994b 100644 --- a/drivers/net/wan/z85230.c +++ b/drivers/net/wan/z85230.c @@ -1775,7 +1775,7 @@ EXPORT_SYMBOL(z8530_queue_xmit); /* * Module support */ -static const char banner[] __initdata = +static const char banner[] __initconst = KERN_INFO "Generic Z85C30/Z85230 interface driver v0.02\n"; static int __init z85230_init_driver(void) diff --git a/drivers/platform/x86/amilo-rfkill.c b/drivers/platform/x86/amilo-rfkill.c index a514bf66fdd..1deca7f6c4e 100644 --- a/drivers/platform/x86/amilo-rfkill.c +++ b/drivers/platform/x86/amilo-rfkill.c @@ -74,7 +74,7 @@ static const struct rfkill_ops amilo_m7440_rfkill_ops = { .set_block = amilo_m7440_rfkill_set_block }; -static const struct dmi_system_id __devinitdata amilo_rfkill_id_table[] = { +static const struct dmi_system_id __devinitconst amilo_rfkill_id_table[] = { { .matches = { DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"), diff --git a/drivers/platform/x86/fujitsu-tablet.c b/drivers/platform/x86/fujitsu-tablet.c index 7acae3f85f3..f77484528b1 100644 --- a/drivers/platform/x86/fujitsu-tablet.c +++ b/drivers/platform/x86/fujitsu-tablet.c @@ -52,7 +52,7 @@ struct fujitsu_config { unsigned int quirks; }; -static unsigned short keymap_Lifebook_Tseries[KEYMAP_LEN] __initconst = { +static unsigned short keymap_Lifebook_Tseries[KEYMAP_LEN] __initdata = { KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, @@ -71,7 +71,7 @@ static unsigned short keymap_Lifebook_Tseries[KEYMAP_LEN] __initconst = { KEY_LEFTALT }; -static unsigned short keymap_Lifebook_U810[KEYMAP_LEN] __initconst = { +static unsigned short keymap_Lifebook_U810[KEYMAP_LEN] __initdata = { KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, @@ -90,7 +90,7 @@ static unsigned short keymap_Lifebook_U810[KEYMAP_LEN] __initconst = { KEY_LEFTALT }; -static unsigned short keymap_Stylistic_Tseries[KEYMAP_LEN] __initconst = { +static unsigned short keymap_Stylistic_Tseries[KEYMAP_LEN] __initdata = { KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, @@ -109,7 +109,7 @@ static unsigned short keymap_Stylistic_Tseries[KEYMAP_LEN] __initconst = { KEY_LEFTALT }; -static unsigned short keymap_Stylistic_ST5xxx[KEYMAP_LEN] __initconst = { +static unsigned short keymap_Stylistic_ST5xxx[KEYMAP_LEN] __initdata = { KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, @@ -299,7 +299,7 @@ static int __devinit fujitsu_dmi_stylistic(const struct dmi_system_id *dmi) return 1; } -static struct dmi_system_id dmi_ids[] __initconst = { +static const struct dmi_system_id dmi_ids[] __initconst = { { .callback = fujitsu_dmi_lifebook, .ident = "Fujitsu Siemens P/T Series", diff --git a/drivers/platform/x86/thinkpad_acpi.c b/drivers/platform/x86/thinkpad_acpi.c index 9da5fe715e6..75dd651664a 100644 --- a/drivers/platform/x86/thinkpad_acpi.c +++ b/drivers/platform/x86/thinkpad_acpi.c @@ -522,7 +522,7 @@ static acpi_handle ec_handle; #define TPACPI_HANDLE(object, parent, paths...) \ static acpi_handle object##_handle; \ - static const acpi_handle *object##_parent __initdata = \ + static const acpi_handle * const object##_parent __initconst = \ &parent##_handle; \ static char *object##_paths[] __initdata = { paths } diff --git a/drivers/pps/pps.c b/drivers/pps/pps.c index e771487132f..2420d5af058 100644 --- a/drivers/pps/pps.c +++ b/drivers/pps/pps.c @@ -306,7 +306,7 @@ int pps_register_cdev(struct pps_device *pps) if (err < 0) return err; - pps->id &= MAX_ID_MASK; + pps->id &= MAX_IDR_MASK; if (pps->id >= PPS_MAX_SOURCES) { pr_err("%s: too many PPS sources in the system\n", pps->info.name); diff --git a/drivers/rapidio/devices/tsi721.c b/drivers/rapidio/devices/tsi721.c index d5e1625bbac..38ecd8f4d60 100644 --- a/drivers/rapidio/devices/tsi721.c +++ b/drivers/rapidio/devices/tsi721.c @@ -862,6 +862,90 @@ static void tsi721_init_pc2sr_mapping(struct tsi721_device *priv) } /** + * tsi721_rio_map_inb_mem -- Mapping inbound memory region. + * @mport: RapidIO master port + * @lstart: Local memory space start address. + * @rstart: RapidIO space start address. + * @size: The mapping region size. + * @flags: Flags for mapping. 0 for using default flags. + * + * Return: 0 -- Success. + * + * This function will create the inbound mapping + * from rstart to lstart. + */ +static int tsi721_rio_map_inb_mem(struct rio_mport *mport, dma_addr_t lstart, + u64 rstart, u32 size, u32 flags) +{ + struct tsi721_device *priv = mport->priv; + int i; + u32 regval; + + if (!is_power_of_2(size) || size < 0x1000 || + ((u64)lstart & (size - 1)) || (rstart & (size - 1))) + return -EINVAL; + + /* Search for free inbound translation window */ + for (i = 0; i < TSI721_IBWIN_NUM; i++) { + regval = ioread32(priv->regs + TSI721_IBWIN_LB(i)); + if (!(regval & TSI721_IBWIN_LB_WEN)) + break; + } + + if (i >= TSI721_IBWIN_NUM) { + dev_err(&priv->pdev->dev, + "Unable to find free inbound window\n"); + return -EBUSY; + } + + iowrite32(TSI721_IBWIN_SIZE(size) << 8, + priv->regs + TSI721_IBWIN_SZ(i)); + + iowrite32(((u64)lstart >> 32), priv->regs + TSI721_IBWIN_TUA(i)); + iowrite32(((u64)lstart & TSI721_IBWIN_TLA_ADD), + priv->regs + TSI721_IBWIN_TLA(i)); + + iowrite32(rstart >> 32, priv->regs + TSI721_IBWIN_UB(i)); + iowrite32((rstart & TSI721_IBWIN_LB_BA) | TSI721_IBWIN_LB_WEN, + priv->regs + TSI721_IBWIN_LB(i)); + dev_dbg(&priv->pdev->dev, + "Configured IBWIN%d mapping (RIO_0x%llx -> PCIe_0x%llx)\n", + i, rstart, (unsigned long long)lstart); + + return 0; +} + +/** + * fsl_rio_unmap_inb_mem -- Unmapping inbound memory region. + * @mport: RapidIO master port + * @lstart: Local memory space start address. + */ +static void tsi721_rio_unmap_inb_mem(struct rio_mport *mport, + dma_addr_t lstart) +{ + struct tsi721_device *priv = mport->priv; + int i; + u64 addr; + u32 regval; + + /* Search for matching active inbound translation window */ + for (i = 0; i < TSI721_IBWIN_NUM; i++) { + regval = ioread32(priv->regs + TSI721_IBWIN_LB(i)); + if (regval & TSI721_IBWIN_LB_WEN) { + regval = ioread32(priv->regs + TSI721_IBWIN_TUA(i)); + addr = (u64)regval << 32; + regval = ioread32(priv->regs + TSI721_IBWIN_TLA(i)); + addr |= regval & TSI721_IBWIN_TLA_ADD; + + if (addr == (u64)lstart) { + iowrite32(0, priv->regs + TSI721_IBWIN_LB(i)); + break; + } + } + } +} + +/** * tsi721_init_sr2pc_mapping - initializes inbound (SRIO->PCIe) * translation regions. * @priv: pointer to tsi721 private data @@ -874,7 +958,7 @@ static void tsi721_init_sr2pc_mapping(struct tsi721_device *priv) /* Disable all SR2PC inbound windows */ for (i = 0; i < TSI721_IBWIN_NUM; i++) - iowrite32(0, priv->regs + TSI721_IBWINLB(i)); + iowrite32(0, priv->regs + TSI721_IBWIN_LB(i)); } /** @@ -2144,6 +2228,8 @@ static int __devinit tsi721_setup_mport(struct tsi721_device *priv) ops->add_outb_message = tsi721_add_outb_message; ops->add_inb_buffer = tsi721_add_inb_buffer; ops->get_inb_message = tsi721_get_inb_message; + ops->map_inb = tsi721_rio_map_inb_mem; + ops->unmap_inb = tsi721_rio_unmap_inb_mem; mport = kzalloc(sizeof(struct rio_mport), GFP_KERNEL); if (!mport) { @@ -2165,7 +2251,8 @@ static int __devinit tsi721_setup_mport(struct tsi721_device *priv) rio_init_dbell_res(&mport->riores[RIO_DOORBELL_RESOURCE], 0, 0xffff); rio_init_mbox_res(&mport->riores[RIO_INB_MBOX_RESOURCE], 0, 3); rio_init_mbox_res(&mport->riores[RIO_OUTB_MBOX_RESOURCE], 0, 3); - strcpy(mport->name, "Tsi721 mport"); + snprintf(mport->name, RIO_MAX_MPORT_NAME, "%s(%s)", + dev_driver_string(&pdev->dev), dev_name(&pdev->dev)); /* Hook up interrupt handler */ @@ -2315,7 +2402,8 @@ static int __devinit tsi721_probe(struct pci_dev *pdev, /* Configure DMA attributes. */ if (pci_set_dma_mask(pdev, DMA_BIT_MASK(64))) { - if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32))) { + err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); + if (err) { dev_info(&pdev->dev, "Unable to set DMA mask\n"); goto err_unmap_bars; } diff --git a/drivers/rapidio/devices/tsi721.h b/drivers/rapidio/devices/tsi721.h index 59de9d7be34..7d5b13ba8d4 100644 --- a/drivers/rapidio/devices/tsi721.h +++ b/drivers/rapidio/devices/tsi721.h @@ -156,9 +156,18 @@ #define TSI721_IBWIN_NUM 8 -#define TSI721_IBWINLB(x) (0x29000 + (x) * 0x20) -#define TSI721_IBWINLB_BA 0xfffff000 -#define TSI721_IBWINLB_WEN 0x00000001 +#define TSI721_IBWIN_LB(x) (0x29000 + (x) * 0x20) +#define TSI721_IBWIN_LB_BA 0xfffff000 +#define TSI721_IBWIN_LB_WEN 0x00000001 + +#define TSI721_IBWIN_UB(x) (0x29004 + (x) * 0x20) +#define TSI721_IBWIN_SZ(x) (0x29008 + (x) * 0x20) +#define TSI721_IBWIN_SZ_SIZE 0x00001f00 +#define TSI721_IBWIN_SIZE(size) (__fls(size) - 12) + +#define TSI721_IBWIN_TLA(x) (0x2900c + (x) * 0x20) +#define TSI721_IBWIN_TLA_ADD 0xfffff000 +#define TSI721_IBWIN_TUA(x) (0x29010 + (x) * 0x20) #define TSI721_SR2PC_GEN_INTE 0x29800 #define TSI721_SR2PC_PWE 0x29804 diff --git a/drivers/rapidio/rio-scan.c b/drivers/rapidio/rio-scan.c index 2bebd791a09..48e9041dd1e 100644 --- a/drivers/rapidio/rio-scan.c +++ b/drivers/rapidio/rio-scan.c @@ -31,27 +31,21 @@ #include <linux/module.h> #include <linux/spinlock.h> #include <linux/timer.h> +#include <linux/sched.h> #include <linux/jiffies.h> #include <linux/slab.h> #include "rio.h" LIST_HEAD(rio_devices); -static LIST_HEAD(rio_switches); - -static void rio_enum_timeout(unsigned long); static void rio_init_em(struct rio_dev *rdev); DEFINE_SPINLOCK(rio_global_list_lock); static int next_destid = 0; -static int next_net = 0; static int next_comptag = 1; -static struct timer_list rio_enum_timer = -TIMER_INITIALIZER(rio_enum_timeout, 0, 0); - static int rio_mport_phys_table[] = { RIO_EFB_PAR_EP_ID, RIO_EFB_PAR_EP_REC_ID, @@ -60,6 +54,114 @@ static int rio_mport_phys_table[] = { -1, }; + +/* + * rio_destid_alloc - Allocate next available destID for given network + * net: RIO network + * + * Returns next available device destination ID for the specified RIO network. + * Marks allocated ID as one in use. + * Returns RIO_INVALID_DESTID if new destID is not available. + */ +static u16 rio_destid_alloc(struct rio_net *net) +{ + int destid; + struct rio_id_table *idtab = &net->destid_table; + + spin_lock(&idtab->lock); + destid = find_next_zero_bit(idtab->table, idtab->max, idtab->next); + if (destid >= idtab->max) + destid = find_first_zero_bit(idtab->table, idtab->max); + + if (destid < idtab->max) { + idtab->next = destid + 1; + if (idtab->next >= idtab->max) + idtab->next = 0; + set_bit(destid, idtab->table); + destid += idtab->start; + } else + destid = RIO_INVALID_DESTID; + + spin_unlock(&idtab->lock); + return (u16)destid; +} + +/* + * rio_destid_reserve - Reserve the specivied destID + * net: RIO network + * destid: destID to reserve + * + * Tries to reserve the specified destID. + * Returns 0 if successfull. + */ +static int rio_destid_reserve(struct rio_net *net, u16 destid) +{ + int oldbit; + struct rio_id_table *idtab = &net->destid_table; + + destid -= idtab->start; + spin_lock(&idtab->lock); + oldbit = test_and_set_bit(destid, idtab->table); + spin_unlock(&idtab->lock); + return oldbit; +} + +/* + * rio_destid_free - free a previously allocated destID + * net: RIO network + * destid: destID to free + * + * Makes the specified destID available for use. + */ +static void rio_destid_free(struct rio_net *net, u16 destid) +{ + struct rio_id_table *idtab = &net->destid_table; + + destid -= idtab->start; + spin_lock(&idtab->lock); + clear_bit(destid, idtab->table); + spin_unlock(&idtab->lock); +} + +/* + * rio_destid_first - return first destID in use + * net: RIO network + */ +static u16 rio_destid_first(struct rio_net *net) +{ + int destid; + struct rio_id_table *idtab = &net->destid_table; + + spin_lock(&idtab->lock); + destid = find_first_bit(idtab->table, idtab->max); + if (destid >= idtab->max) + destid = RIO_INVALID_DESTID; + else + destid += idtab->start; + spin_unlock(&idtab->lock); + return (u16)destid; +} + +/* + * rio_destid_next - return next destID in use + * net: RIO network + * from: destination ID from which search shall continue + */ +static u16 rio_destid_next(struct rio_net *net, u16 from) +{ + int destid; + struct rio_id_table *idtab = &net->destid_table; + + spin_lock(&idtab->lock); + destid = find_next_bit(idtab->table, idtab->max, from); + if (destid >= idtab->max) + destid = RIO_INVALID_DESTID; + else + destid += idtab->start; + spin_unlock(&idtab->lock); + return (u16)destid; +} + /** * rio_get_device_id - Get the base/extended device id for a device * @port: RIO master port @@ -108,14 +210,15 @@ static void rio_local_set_device_id(struct rio_mport *port, u16 did) /** * rio_clear_locks- Release all host locks and signal enumeration complete - * @port: Master port to issue transaction + * @net: RIO network to run on * * Marks the component tag CSR on each device with the enumeration * complete flag. When complete, it then release the host locks on * each device. Returns 0 on success or %-EINVAL on failure. */ -static int rio_clear_locks(struct rio_mport *port) +static int rio_clear_locks(struct rio_net *net) { + struct rio_mport *port = net->hport; struct rio_dev *rdev; u32 result; int ret = 0; @@ -130,7 +233,7 @@ static int rio_clear_locks(struct rio_mport *port) result); ret = -EINVAL; } - list_for_each_entry(rdev, &rio_devices, global_list) { + list_for_each_entry(rdev, &net->devices, net_list) { rio_write_config_32(rdev, RIO_HOST_DID_LOCK_CSR, port->host_deviceid); rio_read_config_32(rdev, RIO_HOST_DID_LOCK_CSR, &result); @@ -176,10 +279,6 @@ static int rio_enum_host(struct rio_mport *port) /* Set master port destid and init destid ctr */ rio_local_set_device_id(port, port->host_deviceid); - - if (next_destid == port->host_deviceid) - next_destid++; - return 0; } @@ -446,9 +545,8 @@ static struct rio_dev __devinit *rio_setup_device(struct rio_net *net, if (rio_device_has_destid(port, rdev->src_ops, rdev->dst_ops)) { if (do_enum) { rio_set_device_id(port, destid, hopcount, next_destid); - rdev->destid = next_destid++; - if (next_destid == port->host_deviceid) - next_destid++; + rdev->destid = next_destid; + next_destid = rio_destid_alloc(net); } else rdev->destid = rio_get_device_id(port, destid, hopcount); @@ -483,7 +581,7 @@ static struct rio_dev __devinit *rio_setup_device(struct rio_net *net, rswitch->clr_table(port, destid, hopcount, RIO_GLOBAL_TABLE); - list_add_tail(&rswitch->node, &rio_switches); + list_add_tail(&rswitch->node, &net->switches); } else { if (do_enum) @@ -747,12 +845,7 @@ static u16 rio_get_host_deviceid_lock(struct rio_mport *port, u8 hopcount) static int __devinit rio_enum_peer(struct rio_net *net, struct rio_mport *port, u8 hopcount, struct rio_dev *prev, int prev_port) { - int port_num; - int cur_destid; - int sw_destid; - int sw_inport; struct rio_dev *rdev; - u16 destid; u32 regval; int tmp; @@ -818,19 +911,26 @@ static int __devinit rio_enum_peer(struct rio_net *net, struct rio_mport *port, return -1; if (rio_is_switch(rdev)) { + int sw_destid; + int cur_destid; + int sw_inport; + u16 destid; + int port_num; + sw_inport = RIO_GET_PORT_NUM(rdev->swpinfo); rio_route_add_entry(rdev, RIO_GLOBAL_TABLE, port->host_deviceid, sw_inport, 0); rdev->rswitch->route_table[port->host_deviceid] = sw_inport; - for (destid = 0; destid < next_destid; destid++) { - if (destid == port->host_deviceid) - continue; - rio_route_add_entry(rdev, RIO_GLOBAL_TABLE, - destid, sw_inport, 0); - rdev->rswitch->route_table[destid] = sw_inport; + destid = rio_destid_first(net); + while (destid != RIO_INVALID_DESTID && destid < next_destid) { + if (destid != port->host_deviceid) { + rio_route_add_entry(rdev, RIO_GLOBAL_TABLE, + destid, sw_inport, 0); + rdev->rswitch->route_table[destid] = sw_inport; + } + destid = rio_destid_next(net, destid + 1); } - pr_debug( "RIO: found %s (vid %4.4x did %4.4x) with %d ports\n", rio_name(rdev), rdev->vid, rdev->did, @@ -839,12 +939,10 @@ static int __devinit rio_enum_peer(struct rio_net *net, struct rio_mport *port, for (port_num = 0; port_num < RIO_GET_TOTAL_PORTS(rdev->swpinfo); port_num++) { - /*Enable Input Output Port (transmitter reviever)*/ - rio_enable_rx_tx_port(port, 0, + if (sw_inport == port_num) { + rio_enable_rx_tx_port(port, 0, RIO_ANY_DESTID(port->sys_size), hopcount, port_num); - - if (sw_inport == port_num) { rdev->rswitch->port_ok |= (1 << port_num); continue; } @@ -857,6 +955,9 @@ static int __devinit rio_enum_peer(struct rio_net *net, struct rio_mport *port, pr_debug( "RIO: scanning device on port %d\n", port_num); + rio_enable_rx_tx_port(port, 0, + RIO_ANY_DESTID(port->sys_size), + hopcount, port_num); rdev->rswitch->port_ok |= (1 << port_num); rio_route_add_entry(rdev, RIO_GLOBAL_TABLE, RIO_ANY_DESTID(port->sys_size), @@ -867,19 +968,22 @@ static int __devinit rio_enum_peer(struct rio_net *net, struct rio_mport *port, return -1; /* Update routing tables */ - if (next_destid > cur_destid) { + destid = rio_destid_next(net, cur_destid + 1); + if (destid != RIO_INVALID_DESTID) { for (destid = cur_destid; - destid < next_destid; destid++) { - if (destid == port->host_deviceid) - continue; - rio_route_add_entry(rdev, + destid < next_destid;) { + if (destid != port->host_deviceid) { + rio_route_add_entry(rdev, RIO_GLOBAL_TABLE, destid, port_num, 0); - rdev->rswitch-> - route_table[destid] = - port_num; + rdev->rswitch-> + route_table[destid] = + port_num; + } + destid = rio_destid_next(net, + destid + 1); } } } else { @@ -905,11 +1009,8 @@ static int __devinit rio_enum_peer(struct rio_net *net, struct rio_mport *port, rio_init_em(rdev); /* Check for empty switch */ - if (next_destid == sw_destid) { - next_destid++; - if (next_destid == port->host_deviceid) - next_destid++; - } + if (next_destid == sw_destid) + next_destid = rio_destid_alloc(net); rdev->destid = sw_destid; } else @@ -1047,48 +1148,71 @@ static int rio_mport_is_active(struct rio_mport *port) /** * rio_alloc_net- Allocate and configure a new RIO network * @port: Master port associated with the RIO network + * @do_enum: Enumeration/Discovery mode flag + * @start: logical minimal start id for new net * * Allocates a RIO network structure, initializes per-network * list heads, and adds the associated master port to the * network list of associated master ports. Returns a * RIO network pointer on success or %NULL on failure. */ -static struct rio_net __devinit *rio_alloc_net(struct rio_mport *port) +static struct rio_net __devinit *rio_alloc_net(struct rio_mport *port, + int do_enum, u16 start) { struct rio_net *net; net = kzalloc(sizeof(struct rio_net), GFP_KERNEL); + if (net && do_enum) { + net->destid_table.table = kzalloc( + BITS_TO_LONGS(RIO_MAX_ROUTE_ENTRIES(port->sys_size)) * + sizeof(long), + GFP_KERNEL); + + if (net->destid_table.table == NULL) { + pr_err("RIO: failed to allocate destID table\n"); + kfree(net); + net = NULL; + } else { + net->destid_table.start = start; + net->destid_table.next = 0; + net->destid_table.max = + RIO_MAX_ROUTE_ENTRIES(port->sys_size); + spin_lock_init(&net->destid_table.lock); + } + } + if (net) { INIT_LIST_HEAD(&net->node); INIT_LIST_HEAD(&net->devices); + INIT_LIST_HEAD(&net->switches); INIT_LIST_HEAD(&net->mports); list_add_tail(&port->nnode, &net->mports); net->hport = port; - net->id = next_net++; + net->id = port->id; } return net; } /** * rio_update_route_tables- Updates route tables in switches - * @port: Master port associated with the RIO network + * @net: RIO network to run update on * * For each enumerated device, ensure that each switch in a system * has correct routing entries. Add routes for devices that where * unknown dirung the first enumeration pass through the switch. */ -static void rio_update_route_tables(struct rio_mport *port) +static void rio_update_route_tables(struct rio_net *net) { struct rio_dev *rdev, *swrdev; struct rio_switch *rswitch; u8 sport; u16 destid; - list_for_each_entry(rdev, &rio_devices, global_list) { + list_for_each_entry(rdev, &net->devices, net_list) { destid = rdev->destid; - list_for_each_entry(rswitch, &rio_switches, node) { + list_for_each_entry(rswitch, &net->switches, node) { if (rio_is_switch(rdev) && (rdev->rswitch == rswitch)) continue; @@ -1166,12 +1290,16 @@ int __devinit rio_enum_mport(struct rio_mport *mport) /* If master port has an active link, allocate net and enum peers */ if (rio_mport_is_active(mport)) { - if (!(net = rio_alloc_net(mport))) { + net = rio_alloc_net(mport, 1, 0); + if (!net) { printk(KERN_ERR "RIO: failed to allocate new net\n"); rc = -ENOMEM; goto out; } + /* reserve mport destID in new net */ + rio_destid_reserve(net, mport->host_deviceid); + /* Enable Input Output Port (transmitter reviever) */ rio_enable_rx_tx_port(mport, 1, 0, 0, 0); @@ -1179,17 +1307,21 @@ int __devinit rio_enum_mport(struct rio_mport *mport) rio_local_write_config_32(mport, RIO_COMPONENT_TAG_CSR, next_comptag++); + next_destid = rio_destid_alloc(net); + if (rio_enum_peer(net, mport, 0, NULL, 0) < 0) { /* A higher priority host won enumeration, bail. */ printk(KERN_INFO "RIO: master port %d device has lost enumeration to a remote host\n", mport->id); - rio_clear_locks(mport); + rio_clear_locks(net); rc = -EBUSY; goto out; } - rio_update_route_tables(mport); - rio_clear_locks(mport); + /* free the last allocated destID (unused) */ + rio_destid_free(net, next_destid); + rio_update_route_tables(net); + rio_clear_locks(net); rio_pw_enable(mport, 1); } else { printk(KERN_INFO "RIO: master port %d link inactive\n", @@ -1203,47 +1335,34 @@ int __devinit rio_enum_mport(struct rio_mport *mport) /** * rio_build_route_tables- Generate route tables from switch route entries + * @net: RIO network to run route tables scan on * * For each switch device, generate a route table by copying existing * route entries from the switch. */ -static void rio_build_route_tables(void) +static void rio_build_route_tables(struct rio_net *net) { + struct rio_switch *rswitch; struct rio_dev *rdev; int i; u8 sport; - list_for_each_entry(rdev, &rio_devices, global_list) - if (rio_is_switch(rdev)) { - rio_lock_device(rdev->net->hport, rdev->destid, - rdev->hopcount, 1000); - for (i = 0; - i < RIO_MAX_ROUTE_ENTRIES(rdev->net->hport->sys_size); - i++) { - if (rio_route_get_entry(rdev, - RIO_GLOBAL_TABLE, i, &sport, 0) < 0) - continue; - rdev->rswitch->route_table[i] = sport; - } + list_for_each_entry(rswitch, &net->switches, node) { + rdev = sw_to_rio_dev(rswitch); - rio_unlock_device(rdev->net->hport, - rdev->destid, - rdev->hopcount); + rio_lock_device(net->hport, rdev->destid, + rdev->hopcount, 1000); + for (i = 0; + i < RIO_MAX_ROUTE_ENTRIES(net->hport->sys_size); + i++) { + if (rio_route_get_entry(rdev, RIO_GLOBAL_TABLE, + i, &sport, 0) < 0) + continue; + rswitch->route_table[i] = sport; } -} -/** - * rio_enum_timeout- Signal that enumeration timed out - * @data: Address of timeout flag. - * - * When the enumeration complete timer expires, set a flag that - * signals to the discovery process that enumeration did not - * complete in a sane amount of time. - */ -static void rio_enum_timeout(unsigned long data) -{ - /* Enumeration timed out, set flag */ - *(int *)data = 1; + rio_unlock_device(net->hport, rdev->destid, rdev->hopcount); + } } /** @@ -1259,34 +1378,33 @@ static void rio_enum_timeout(unsigned long data) int __devinit rio_disc_mport(struct rio_mport *mport) { struct rio_net *net = NULL; - int enum_timeout_flag = 0; + unsigned long to_end; printk(KERN_INFO "RIO: discover master port %d, %s\n", mport->id, mport->name); /* If master port has an active link, allocate net and discover peers */ if (rio_mport_is_active(mport)) { - if (!(net = rio_alloc_net(mport))) { - printk(KERN_ERR "RIO: Failed to allocate new net\n"); - goto bail; - } + pr_debug("RIO: wait for enumeration to complete...\n"); - pr_debug("RIO: wait for enumeration complete..."); - - rio_enum_timer.expires = - jiffies + CONFIG_RAPIDIO_DISC_TIMEOUT * HZ; - rio_enum_timer.data = (unsigned long)&enum_timeout_flag; - add_timer(&rio_enum_timer); - while (!rio_enum_complete(mport)) { - mdelay(1); - if (enum_timeout_flag) { - del_timer_sync(&rio_enum_timer); - goto timeout; - } + to_end = jiffies + CONFIG_RAPIDIO_DISC_TIMEOUT * HZ; + while (time_before(jiffies, to_end)) { + if (rio_enum_complete(mport)) + goto enum_done; + schedule_timeout_uninterruptible(msecs_to_jiffies(10)); } - del_timer_sync(&rio_enum_timer); - pr_debug("done\n"); + pr_debug("RIO: discovery timeout on mport %d %s\n", + mport->id, mport->name); + goto bail; +enum_done: + pr_debug("RIO: ... enumeration done\n"); + + net = rio_alloc_net(mport, 0, 0); + if (!net) { + printk(KERN_ERR "RIO: Failed to allocate new net\n"); + goto bail; + } /* Read DestID assigned by enumerator */ rio_local_read_config_32(mport, RIO_DID_CSR, @@ -1302,13 +1420,10 @@ int __devinit rio_disc_mport(struct rio_mport *mport) goto bail; } - rio_build_route_tables(); + rio_build_route_tables(net); } return 0; - - timeout: - pr_debug("timeout\n"); - bail: +bail: return -EBUSY; } diff --git a/drivers/rapidio/rio.c b/drivers/rapidio/rio.c index c40665a4fa3..d4bd69013c5 100644 --- a/drivers/rapidio/rio.c +++ b/drivers/rapidio/rio.c @@ -33,6 +33,7 @@ static LIST_HEAD(rio_mports); static unsigned char next_portid; +static DEFINE_SPINLOCK(rio_mmap_lock); /** * rio_local_get_device_id - Get the base/extended device id for a port @@ -398,6 +399,49 @@ int rio_release_inb_pwrite(struct rio_dev *rdev) EXPORT_SYMBOL_GPL(rio_release_inb_pwrite); /** + * rio_map_inb_region -- Map inbound memory region. + * @mport: Master port. + * @lstart: physical address of memory region to be mapped + * @rbase: RIO base address assigned to this window + * @size: Size of the memory region + * @rflags: Flags for mapping. + * + * Return: 0 -- Success. + * + * This function will create the mapping from RIO space to local memory. + */ +int rio_map_inb_region(struct rio_mport *mport, dma_addr_t local, + u64 rbase, u32 size, u32 rflags) +{ + int rc = 0; + unsigned long flags; + + if (!mport->ops->map_inb) + return -1; + spin_lock_irqsave(&rio_mmap_lock, flags); + rc = mport->ops->map_inb(mport, local, rbase, size, rflags); + spin_unlock_irqrestore(&rio_mmap_lock, flags); + return rc; +} +EXPORT_SYMBOL_GPL(rio_map_inb_region); + +/** + * rio_unmap_inb_region -- Unmap the inbound memory region + * @mport: Master port + * @lstart: physical address of memory region to be unmapped + */ +void rio_unmap_inb_region(struct rio_mport *mport, dma_addr_t lstart) +{ + unsigned long flags; + if (!mport->ops->unmap_inb) + return; + spin_lock_irqsave(&rio_mmap_lock, flags); + mport->ops->unmap_inb(mport, lstart); + spin_unlock_irqrestore(&rio_mmap_lock, flags); +} +EXPORT_SYMBOL_GPL(rio_unmap_inb_region); + +/** * rio_mport_get_physefb - Helper function that returns register offset * for Physical Layer Extended Features Block. * @port: Master port to issue transaction @@ -1216,15 +1260,62 @@ static int __devinit rio_init(void) return 0; } +static struct workqueue_struct *rio_wq; + +struct rio_disc_work { + struct work_struct work; + struct rio_mport *mport; +}; + +static void __devinit disc_work_handler(struct work_struct *_work) +{ + struct rio_disc_work *work; + + work = container_of(_work, struct rio_disc_work, work); + pr_debug("RIO: discovery work for mport %d %s\n", + work->mport->id, work->mport->name); + rio_disc_mport(work->mport); + + kfree(work); +} + int __devinit rio_init_mports(void) { struct rio_mport *port; + struct rio_disc_work *work; + int no_disc = 0; list_for_each_entry(port, &rio_mports, node) { if (port->host_deviceid >= 0) rio_enum_mport(port); - else - rio_disc_mport(port); + else if (!no_disc) { + if (!rio_wq) { + rio_wq = alloc_workqueue("riodisc", 0, 0); + if (!rio_wq) { + pr_err("RIO: unable allocate rio_wq\n"); + no_disc = 1; + continue; + } + } + + work = kzalloc(sizeof *work, GFP_KERNEL); + if (!work) { + pr_err("RIO: no memory for work struct\n"); + no_disc = 1; + continue; + } + + work->mport = port; + INIT_WORK(&work->work, disc_work_handler); + queue_work(rio_wq, &work->work); + } + } + + if (rio_wq) { + pr_debug("RIO: flush discovery workqueue\n"); + flush_workqueue(rio_wq); + pr_debug("RIO: flush discovery workqueue finished\n"); + destroy_workqueue(rio_wq); } rio_init(); diff --git a/drivers/rtc/Kconfig b/drivers/rtc/Kconfig index fabc99a75c6..e069f176a82 100644 --- a/drivers/rtc/Kconfig +++ b/drivers/rtc/Kconfig @@ -19,7 +19,6 @@ if RTC_CLASS config RTC_HCTOSYS bool "Set system time from RTC on startup and resume" - depends on RTC_CLASS = y default y help If you say yes here, the system time (wall clock) will be set using @@ -51,7 +50,6 @@ config RTC_HCTOSYS_DEVICE config RTC_DEBUG bool "RTC debug support" - depends on RTC_CLASS = y help Say yes here to enable debugging support in the RTC framework and individual RTC drivers. @@ -61,7 +59,6 @@ comment "RTC interfaces" config RTC_INTF_SYSFS boolean "/sys/class/rtc/rtcN (sysfs)" depends on SYSFS - default RTC_CLASS help Say yes here if you want to use your RTCs using sysfs interfaces, /sys/class/rtc/rtc0 through /sys/.../rtcN. @@ -69,19 +66,19 @@ config RTC_INTF_SYSFS If unsure, say Y. config RTC_INTF_PROC - boolean "/proc/driver/rtc (procfs for rtc0)" + boolean "/proc/driver/rtc (procfs for rtcN)" depends on PROC_FS - default RTC_CLASS help - Say yes here if you want to use your first RTC through the proc - interface, /proc/driver/rtc. Other RTCs will not be available - through that API. + Say yes here if you want to use your system clock RTC through + the proc interface, /proc/driver/rtc. + Other RTCs will not be available through that API. + If there is no RTC for the system clock, then the first RTC(rtc0) + is used by default. If unsure, say Y. config RTC_INTF_DEV boolean "/dev/rtcN (character devices)" - default RTC_CLASS help Say yes here if you want to use your RTCs using the /dev interfaces, which "udev" sets up as /dev/rtc0 through @@ -127,7 +124,7 @@ if I2C config RTC_DRV_88PM860X tristate "Marvell 88PM860x" - depends on RTC_CLASS && I2C && MFD_88PM860X + depends on I2C && MFD_88PM860X help If you say yes here you get support for RTC function in Marvell 88PM860x chips. @@ -137,7 +134,7 @@ config RTC_DRV_88PM860X config RTC_DRV_88PM80X tristate "Marvell 88PM80x" - depends on RTC_CLASS && I2C && MFD_88PM800 + depends on I2C && MFD_88PM800 help If you say yes here you get support for RTC function in Marvell 88PM80x chips. @@ -165,7 +162,7 @@ config RTC_DRV_DS1307 config RTC_DRV_DS1374 tristate "Dallas/Maxim DS1374" - depends on RTC_CLASS && I2C + depends on I2C help If you say yes here you get support for Dallas Semiconductor DS1374 real-time clock chips. If an interrupt is associated @@ -185,7 +182,7 @@ config RTC_DRV_DS1672 config RTC_DRV_DS3232 tristate "Dallas/Maxim DS3232" - depends on RTC_CLASS && I2C + depends on I2C help If you say yes here you get support for Dallas Semiconductor DS3232 real-time clock chips. If an interrupt is associated @@ -203,6 +200,16 @@ config RTC_DRV_MAX6900 This driver can also be built as a module. If so, the module will be called rtc-max6900. +config RTC_DRV_MAX8907 + tristate "Maxim MAX8907" + depends on MFD_MAX8907 + help + If you say yes here you will get support for the + RTC of Maxim MAX8907 PMIC. + + This driver can also be built as a module. If so, the module + will be called rtc-max8907. + config RTC_DRV_MAX8925 tristate "Maxim MAX8925" depends on MFD_MAX8925 @@ -325,7 +332,7 @@ config RTC_DRV_TWL92330 config RTC_DRV_TWL4030 tristate "TI TWL4030/TWL5030/TWL6030/TPS659x0" - depends on RTC_CLASS && TWL4030_CORE + depends on TWL4030_CORE help If you say yes here you get support for the RTC on the TWL4030/TWL5030/TWL6030 family chips, used mostly with OMAP3 platforms. @@ -333,6 +340,26 @@ config RTC_DRV_TWL4030 This driver can also be built as a module. If so, the module will be called rtc-twl. +config RTC_DRV_TPS65910 + tristate "TI TPS65910 RTC driver" + depends on RTC_CLASS && MFD_TPS65910 + help + If you say yes here you get support for the RTC on the + TPS65910 chips. + + This driver can also be built as a module. If so, the module + will be called rtc-tps65910. + +config RTC_DRV_RC5T583 + tristate "RICOH 5T583 RTC driver" + depends on MFD_RC5T583 + help + If you say yes here you get support for the RTC on the + RICOH 5T583 chips. + + This driver can also be built as a module. If so, the module + will be called rtc-rc5t583. + config RTC_DRV_S35390A tristate "Seiko Instruments S-35390A" select BITREVERSE @@ -538,7 +565,6 @@ config RTC_DRV_DS1302 config RTC_DRV_DS1511 tristate "Dallas DS1511" - depends on RTC_CLASS help If you say yes here you get support for the Dallas DS1511 timekeeping/watchdog chip. @@ -583,7 +609,6 @@ config RTC_DRV_EFI config RTC_DRV_STK17TA8 tristate "Simtek STK17TA8" - depends on RTC_CLASS help If you say yes here you get support for the Simtek STK17TA8 timekeeping chip. @@ -658,6 +683,15 @@ config RTC_DRV_V3020 This driver can also be built as a module. If so, the module will be called rtc-v3020. +config RTC_DRV_DS2404 + tristate "Dallas DS2404" + help + If you say yes here you get support for the + Dallas DS2404 RTC chip. + + This driver can also be built as a module. If so, the module + will be called rtc-ds2404. + config RTC_DRV_WM831X tristate "Wolfson Microelectronics WM831x RTC" depends on MFD_WM831X @@ -704,6 +738,7 @@ config RTC_DRV_AB3100 config RTC_DRV_AB8500 tristate "ST-Ericsson AB8500 RTC" depends on AB8500_CORE + select RTC_INTF_DEV select RTC_INTF_DEV_UIE_EMUL help Select this to enable the ST-Ericsson AB8500 power management IC RTC @@ -711,7 +746,7 @@ config RTC_DRV_AB8500 config RTC_DRV_NUC900 tristate "NUC910/NUC920 RTC driver" - depends on RTC_CLASS && ARCH_W90X900 + depends on ARCH_W90X900 help If you say yes here you get support for the RTC subsystem of the NUC910/NUC920 used in embedded systems. @@ -731,7 +766,6 @@ config RTC_DRV_DAVINCI config RTC_DRV_IMXDI tristate "Freescale IMX DryIce Real Time Clock" depends on SOC_IMX25 - depends on RTC_CLASS help Support for Freescale IMX DryIce RTC @@ -791,7 +825,7 @@ config RTC_DRV_SA1100 config RTC_DRV_SH tristate "SuperH On-Chip RTC" - depends on RTC_CLASS && SUPERH && HAVE_CLK + depends on SUPERH && HAVE_CLK help Say Y here to enable support for the on-chip RTC found in most SuperH processors. @@ -1023,7 +1057,6 @@ config RTC_DRV_MPC5121 config RTC_DRV_JZ4740 tristate "Ingenic JZ4740 SoC" - depends on RTC_CLASS depends on MACH_JZ4740 help If you say yes here you get support for the Ingenic JZ4740 SoC RTC @@ -1053,7 +1086,7 @@ config RTC_DRV_PM8XXX config RTC_DRV_TEGRA tristate "NVIDIA Tegra Internal RTC driver" - depends on RTC_CLASS && ARCH_TEGRA + depends on ARCH_TEGRA help If you say yes here you get support for the Tegra 200 series internal RTC module. @@ -1090,7 +1123,6 @@ config RTC_DRV_LOONGSON1 config RTC_DRV_MXC tristate "Freescale MXC Real Time Clock" depends on ARCH_MXC - depends on RTC_CLASS help If you say yes here you get support for the Freescale MXC RTC module. @@ -1098,4 +1130,15 @@ config RTC_DRV_MXC This driver can also be built as a module, if so, the module will be called "rtc-mxc". +config RTC_DRV_SNVS + tristate "Freescale SNVS RTC support" + depends on HAS_IOMEM + depends on OF + help + If you say yes here you get support for the Freescale SNVS + Low Power (LP) RTC module. + + This driver can also be built as a module, if so, the module + will be called "rtc-snvs". + endif # RTC_CLASS diff --git a/drivers/rtc/Makefile b/drivers/rtc/Makefile index 0d5b2b66f90..56297f0fd38 100644 --- a/drivers/rtc/Makefile +++ b/drivers/rtc/Makefile @@ -43,6 +43,7 @@ obj-$(CONFIG_RTC_DRV_DS1511) += rtc-ds1511.o obj-$(CONFIG_RTC_DRV_DS1553) += rtc-ds1553.o obj-$(CONFIG_RTC_DRV_DS1672) += rtc-ds1672.o obj-$(CONFIG_RTC_DRV_DS1742) += rtc-ds1742.o +obj-$(CONFIG_RTC_DRV_DS2404) += rtc-ds2404.o obj-$(CONFIG_RTC_DRV_DS3232) += rtc-ds3232.o obj-$(CONFIG_RTC_DRV_DS3234) += rtc-ds3234.o obj-$(CONFIG_RTC_DRV_EFI) += rtc-efi.o @@ -64,6 +65,7 @@ obj-$(CONFIG_RTC_DRV_M48T59) += rtc-m48t59.o obj-$(CONFIG_RTC_DRV_M48T86) += rtc-m48t86.o obj-$(CONFIG_RTC_DRV_MXC) += rtc-mxc.o obj-$(CONFIG_RTC_DRV_MAX6900) += rtc-max6900.o +obj-$(CONFIG_RTC_DRV_MAX8907) += rtc-max8907.o obj-$(CONFIG_RTC_DRV_MAX8925) += rtc-max8925.o obj-$(CONFIG_RTC_DRV_MAX8998) += rtc-max8998.o obj-$(CONFIG_RTC_DRV_MAX6902) += rtc-max6902.o @@ -85,6 +87,7 @@ obj-$(CONFIG_RTC_DRV_PS3) += rtc-ps3.o obj-$(CONFIG_RTC_DRV_PUV3) += rtc-puv3.o obj-$(CONFIG_RTC_DRV_PXA) += rtc-pxa.o obj-$(CONFIG_RTC_DRV_R9701) += rtc-r9701.o +obj-$(CONFIG_RTC_DRV_RC5T583) += rtc-rc5t583.o obj-$(CONFIG_RTC_DRV_RP5C01) += rtc-rp5c01.o obj-$(CONFIG_RTC_DRV_RS5C313) += rtc-rs5c313.o obj-$(CONFIG_RTC_DRV_RS5C348) += rtc-rs5c348.o @@ -96,6 +99,7 @@ obj-$(CONFIG_RTC_DRV_S35390A) += rtc-s35390a.o obj-$(CONFIG_RTC_DRV_S3C) += rtc-s3c.o obj-$(CONFIG_RTC_DRV_SA1100) += rtc-sa1100.o obj-$(CONFIG_RTC_DRV_SH) += rtc-sh.o +obj-$(CONFIG_RTC_DRV_SNVS) += rtc-snvs.o obj-$(CONFIG_RTC_DRV_SPEAR) += rtc-spear.o obj-$(CONFIG_RTC_DRV_STARFIRE) += rtc-starfire.o obj-$(CONFIG_RTC_DRV_STK17TA8) += rtc-stk17ta8.o @@ -105,6 +109,7 @@ obj-$(CONFIG_RTC_DRV_TEGRA) += rtc-tegra.o obj-$(CONFIG_RTC_DRV_TEST) += rtc-test.o obj-$(CONFIG_RTC_DRV_TILE) += rtc-tile.o obj-$(CONFIG_RTC_DRV_TWL4030) += rtc-twl.o +obj-$(CONFIG_RTC_DRV_TPS65910) += rtc-tps65910.o obj-$(CONFIG_RTC_DRV_TX4939) += rtc-tx4939.o obj-$(CONFIG_RTC_DRV_V3020) += rtc-v3020.o obj-$(CONFIG_RTC_DRV_VR41XX) += rtc-vr41xx.o diff --git a/drivers/rtc/class.c b/drivers/rtc/class.c index dc4c2748bbc..f8a0aab218c 100644 --- a/drivers/rtc/class.c +++ b/drivers/rtc/class.c @@ -31,8 +31,12 @@ static void rtc_device_release(struct device *dev) kfree(rtc); } -#if defined(CONFIG_PM) && defined(CONFIG_RTC_HCTOSYS_DEVICE) +#ifdef CONFIG_RTC_HCTOSYS_DEVICE +/* Result of the last RTC to system clock attempt. */ +int rtc_hctosys_ret = -ENODEV; +#endif +#if defined(CONFIG_PM) && defined(CONFIG_RTC_HCTOSYS_DEVICE) /* * On suspend(), measure the delta between one RTC and the * system's wall clock; restore it on resume(). @@ -84,6 +88,7 @@ static int rtc_resume(struct device *dev) struct timespec new_system, new_rtc; struct timespec sleep_time; + rtc_hctosys_ret = -ENODEV; if (strcmp(dev_name(&rtc->dev), CONFIG_RTC_HCTOSYS_DEVICE) != 0) return 0; @@ -117,6 +122,7 @@ static int rtc_resume(struct device *dev) if (sleep_time.tv_sec >= 0) timekeeping_inject_sleeptime(&sleep_time); + rtc_hctosys_ret = 0; return 0; } @@ -238,6 +244,7 @@ void rtc_device_unregister(struct rtc_device *rtc) rtc_proc_del_device(rtc); device_unregister(&rtc->dev); rtc->ops = NULL; + ida_simple_remove(&rtc_ida, rtc->id); mutex_unlock(&rtc->ops_lock); put_device(&rtc->dev); } diff --git a/drivers/rtc/hctosys.c b/drivers/rtc/hctosys.c index bc90b091f19..4aa60d74004 100644 --- a/drivers/rtc/hctosys.c +++ b/drivers/rtc/hctosys.c @@ -22,8 +22,6 @@ * the best guess is to add 0.5s. */ -int rtc_hctosys_ret = -ENODEV; - static int __init rtc_hctosys(void) { int err = -ENODEV; @@ -56,7 +54,7 @@ static int __init rtc_hctosys(void) rtc_tm_to_time(&tm, &tv.tv_sec); - do_settimeofday(&tv); + err = do_settimeofday(&tv); dev_info(rtc->dev.parent, "setting system clock to " diff --git a/drivers/rtc/rtc-at91sam9.c b/drivers/rtc/rtc-at91sam9.c index 1dd61f402b0..2dfe7a2fb99 100644 --- a/drivers/rtc/rtc-at91sam9.c +++ b/drivers/rtc/rtc-at91sam9.c @@ -473,18 +473,7 @@ static struct platform_driver at91_rtc_driver = { }, }; -static int __init at91_rtc_init(void) -{ - return platform_driver_register(&at91_rtc_driver); -} -module_init(at91_rtc_init); - -static void __exit at91_rtc_exit(void) -{ - platform_driver_unregister(&at91_rtc_driver); -} -module_exit(at91_rtc_exit); - +module_platform_driver(at91_rtc_driver); MODULE_AUTHOR("Michel Benoit"); MODULE_DESCRIPTION("RTC driver for Atmel AT91SAM9x"); diff --git a/drivers/rtc/rtc-coh901331.c b/drivers/rtc/rtc-coh901331.c index 76b2156d3c6..c8115b83e5a 100644 --- a/drivers/rtc/rtc-coh901331.c +++ b/drivers/rtc/rtc-coh901331.c @@ -276,8 +276,7 @@ static void coh901331_shutdown(struct platform_device *pdev) clk_enable(rtap->clk); writel(0, rtap->virtbase + COH901331_IRQ_MASK); - clk_disable(rtap->clk); - clk_unprepare(rtap->clk); + clk_disable_unprepare(rtap->clk); } static struct platform_driver coh901331_driver = { diff --git a/drivers/rtc/rtc-ds1672.c b/drivers/rtc/rtc-ds1672.c index 7fa67d0df17..45d65c0b3a8 100644 --- a/drivers/rtc/rtc-ds1672.c +++ b/drivers/rtc/rtc-ds1672.c @@ -37,8 +37,17 @@ static int ds1672_get_datetime(struct i2c_client *client, struct rtc_time *tm) unsigned char buf[4]; struct i2c_msg msgs[] = { - {client->addr, 0, 1, &addr}, /* setup read ptr */ - {client->addr, I2C_M_RD, 4, buf}, /* read date */ + {/* setup read ptr */ + .addr = client->addr, + .len = 1, + .buf = &addr + }, + {/* read date */ + .addr = client->addr, + .flags = I2C_M_RD, + .len = 4, + .buf = buf + }, }; /* read date registers */ @@ -99,8 +108,17 @@ static int ds1672_get_control(struct i2c_client *client, u8 *status) unsigned char addr = DS1672_REG_CONTROL; struct i2c_msg msgs[] = { - {client->addr, 0, 1, &addr}, /* setup read ptr */ - {client->addr, I2C_M_RD, 1, status}, /* read control */ + {/* setup read ptr */ + .addr = client->addr, + .len = 1, + .buf = &addr + }, + {/* read control */ + .addr = client->addr, + .flags = I2C_M_RD, + .len = 1, + .buf = status + }, }; /* read control register */ diff --git a/drivers/rtc/rtc-ds2404.c b/drivers/rtc/rtc-ds2404.c new file mode 100644 index 00000000000..5ea9df7c8c3 --- /dev/null +++ b/drivers/rtc/rtc-ds2404.c @@ -0,0 +1,303 @@ +/* + * Copyright (C) 2012 Sven Schnelle <svens@stackframe.org> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + */ + +#include <linux/platform_device.h> +#include <linux/module.h> +#include <linux/init.h> +#include <linux/rtc.h> +#include <linux/types.h> +#include <linux/bcd.h> +#include <linux/rtc-ds2404.h> +#include <linux/delay.h> +#include <linux/gpio.h> +#include <linux/slab.h> + +#include <linux/io.h> + +#define DS2404_STATUS_REG 0x200 +#define DS2404_CONTROL_REG 0x201 +#define DS2404_RTC_REG 0x202 + +#define DS2404_WRITE_SCRATCHPAD_CMD 0x0f +#define DS2404_READ_SCRATCHPAD_CMD 0xaa +#define DS2404_COPY_SCRATCHPAD_CMD 0x55 +#define DS2404_READ_MEMORY_CMD 0xf0 + +struct ds2404; + +struct ds2404_chip_ops { + int (*map_io)(struct ds2404 *chip, struct platform_device *pdev, + struct ds2404_platform_data *pdata); + void (*unmap_io)(struct ds2404 *chip); +}; + +#define DS2404_RST 0 +#define DS2404_CLK 1 +#define DS2404_DQ 2 + +struct ds2404_gpio { + const char *name; + unsigned int gpio; +}; + +struct ds2404 { + struct ds2404_gpio *gpio; + struct ds2404_chip_ops *ops; + struct rtc_device *rtc; +}; + +static struct ds2404_gpio ds2404_gpio[] = { + { "RTC RST", 0 }, + { "RTC CLK", 0 }, + { "RTC DQ", 0 }, +}; + +static int ds2404_gpio_map(struct ds2404 *chip, struct platform_device *pdev, + struct ds2404_platform_data *pdata) +{ + int i, err; + + ds2404_gpio[DS2404_RST].gpio = pdata->gpio_rst; + ds2404_gpio[DS2404_CLK].gpio = pdata->gpio_clk; + ds2404_gpio[DS2404_DQ].gpio = pdata->gpio_dq; + + for (i = 0; i < ARRAY_SIZE(ds2404_gpio); i++) { + err = gpio_request(ds2404_gpio[i].gpio, ds2404_gpio[i].name); + if (err) { + printk(KERN_ERR "error mapping gpio %s: %d\n", + ds2404_gpio[i].name, err); + goto err_request; + } + if (i != DS2404_DQ) + gpio_direction_output(ds2404_gpio[i].gpio, 1); + } + + chip->gpio = ds2404_gpio; + return 0; + +err_request: + while (--i >= 0) + gpio_free(ds2404_gpio[i].gpio); + return err; +} + +static void ds2404_gpio_unmap(struct ds2404 *chip) +{ + int i; + + for (i = 0; i < ARRAY_SIZE(ds2404_gpio); i++) + gpio_free(ds2404_gpio[i].gpio); +} + +static struct ds2404_chip_ops ds2404_gpio_ops = { + .map_io = ds2404_gpio_map, + .unmap_io = ds2404_gpio_unmap, +}; + +static void ds2404_reset(struct device *dev) +{ + gpio_set_value(ds2404_gpio[DS2404_RST].gpio, 0); + udelay(1000); + gpio_set_value(ds2404_gpio[DS2404_RST].gpio, 1); + gpio_set_value(ds2404_gpio[DS2404_CLK].gpio, 0); + gpio_direction_output(ds2404_gpio[DS2404_DQ].gpio, 0); + udelay(10); +} + +static void ds2404_write_byte(struct device *dev, u8 byte) +{ + int i; + + gpio_direction_output(ds2404_gpio[DS2404_DQ].gpio, 1); + for (i = 0; i < 8; i++) { + gpio_set_value(ds2404_gpio[DS2404_DQ].gpio, byte & (1 << i)); + udelay(10); + gpio_set_value(ds2404_gpio[DS2404_CLK].gpio, 1); + udelay(10); + gpio_set_value(ds2404_gpio[DS2404_CLK].gpio, 0); + udelay(10); + } +} + +static u8 ds2404_read_byte(struct device *dev) +{ + int i; + u8 ret = 0; + + gpio_direction_input(ds2404_gpio[DS2404_DQ].gpio); + + for (i = 0; i < 8; i++) { + gpio_set_value(ds2404_gpio[DS2404_CLK].gpio, 0); + udelay(10); + if (gpio_get_value(ds2404_gpio[DS2404_DQ].gpio)) + ret |= 1 << i; + gpio_set_value(ds2404_gpio[DS2404_CLK].gpio, 1); + udelay(10); + } + return ret; +} + +static void ds2404_read_memory(struct device *dev, u16 offset, + int length, u8 *out) +{ + ds2404_reset(dev); + ds2404_write_byte(dev, DS2404_READ_MEMORY_CMD); + ds2404_write_byte(dev, offset & 0xff); + ds2404_write_byte(dev, (offset >> 8) & 0xff); + while (length--) + *out++ = ds2404_read_byte(dev); +} + +static void ds2404_write_memory(struct device *dev, u16 offset, + int length, u8 *out) +{ + int i; + u8 ta01, ta02, es; + + ds2404_reset(dev); + ds2404_write_byte(dev, DS2404_WRITE_SCRATCHPAD_CMD); + ds2404_write_byte(dev, offset & 0xff); + ds2404_write_byte(dev, (offset >> 8) & 0xff); + + for (i = 0; i < length; i++) + ds2404_write_byte(dev, out[i]); + + ds2404_reset(dev); + ds2404_write_byte(dev, DS2404_READ_SCRATCHPAD_CMD); + + ta01 = ds2404_read_byte(dev); + ta02 = ds2404_read_byte(dev); + es = ds2404_read_byte(dev); + + for (i = 0; i < length; i++) { + if (out[i] != ds2404_read_byte(dev)) { + printk(KERN_ERR "read invalid data\n"); + return; + } + } + + ds2404_reset(dev); + ds2404_write_byte(dev, DS2404_COPY_SCRATCHPAD_CMD); + ds2404_write_byte(dev, ta01); + ds2404_write_byte(dev, ta02); + ds2404_write_byte(dev, es); + + gpio_direction_input(ds2404_gpio[DS2404_DQ].gpio); + while (gpio_get_value(ds2404_gpio[DS2404_DQ].gpio)) + ; +} + +static void ds2404_enable_osc(struct device *dev) +{ + u8 in[1] = { 0x10 }; /* enable oscillator */ + ds2404_write_memory(dev, 0x201, 1, in); +} + +static int ds2404_read_time(struct device *dev, struct rtc_time *dt) +{ + unsigned long time = 0; + + ds2404_read_memory(dev, 0x203, 4, (u8 *)&time); + time = le32_to_cpu(time); + + rtc_time_to_tm(time, dt); + return rtc_valid_tm(dt); +} + +static int ds2404_set_mmss(struct device *dev, unsigned long secs) +{ + u32 time = cpu_to_le32(secs); + ds2404_write_memory(dev, 0x203, 4, (u8 *)&time); + return 0; +} + +static const struct rtc_class_ops ds2404_rtc_ops = { + .read_time = ds2404_read_time, + .set_mmss = ds2404_set_mmss, +}; + +static int rtc_probe(struct platform_device *pdev) +{ + struct ds2404_platform_data *pdata = pdev->dev.platform_data; + struct ds2404 *chip; + int retval = -EBUSY; + + chip = kzalloc(sizeof(struct ds2404), GFP_KERNEL); + if (!chip) + return -ENOMEM; + + chip->ops = &ds2404_gpio_ops; + + retval = chip->ops->map_io(chip, pdev, pdata); + if (retval) + goto err_chip; + + dev_info(&pdev->dev, "using GPIOs RST:%d, CLK:%d, DQ:%d\n", + chip->gpio[DS2404_RST].gpio, chip->gpio[DS2404_CLK].gpio, + chip->gpio[DS2404_DQ].gpio); + + platform_set_drvdata(pdev, chip); + + chip->rtc = rtc_device_register("ds2404", + &pdev->dev, &ds2404_rtc_ops, THIS_MODULE); + if (IS_ERR(chip->rtc)) { + retval = PTR_ERR(chip->rtc); + goto err_io; + } + + ds2404_enable_osc(&pdev->dev); + return 0; + +err_io: + chip->ops->unmap_io(chip); +err_chip: + kfree(chip); + return retval; +} + +static int rtc_remove(struct platform_device *dev) +{ + struct ds2404 *chip = platform_get_drvdata(dev); + struct rtc_device *rtc = chip->rtc; + + if (rtc) + rtc_device_unregister(rtc); + + chip->ops->unmap_io(chip); + kfree(chip); + + return 0; +} + +static struct platform_driver rtc_device_driver = { + .probe = rtc_probe, + .remove = rtc_remove, + .driver = { + .name = "ds2404", + .owner = THIS_MODULE, + }, +}; + +static __init int ds2404_init(void) +{ + return platform_driver_register(&rtc_device_driver); +} + +static __exit void ds2404_exit(void) +{ + platform_driver_unregister(&rtc_device_driver); +} + +module_init(ds2404_init); +module_exit(ds2404_exit); + +MODULE_DESCRIPTION("DS2404 RTC"); +MODULE_AUTHOR("Sven Schnelle"); +MODULE_LICENSE("GPL"); +MODULE_ALIAS("platform:ds2404"); diff --git a/drivers/rtc/rtc-em3027.c b/drivers/rtc/rtc-em3027.c index 0104ea7ebe5..f6c24ce35d3 100644 --- a/drivers/rtc/rtc-em3027.c +++ b/drivers/rtc/rtc-em3027.c @@ -49,8 +49,17 @@ static int em3027_get_time(struct device *dev, struct rtc_time *tm) unsigned char buf[7]; struct i2c_msg msgs[] = { - {client->addr, 0, 1, &addr}, /* setup read addr */ - {client->addr, I2C_M_RD, 7, buf}, /* read time/date */ + {/* setup read addr */ + .addr = client->addr, + .len = 1, + .buf = &addr + }, + {/* read time/date */ + .addr = client->addr, + .flags = I2C_M_RD, + .len = 7, + .buf = buf + }, }; /* read time/date registers */ @@ -76,7 +85,9 @@ static int em3027_set_time(struct device *dev, struct rtc_time *tm) unsigned char buf[8]; struct i2c_msg msg = { - client->addr, 0, 8, buf, /* write time/date */ + .addr = client->addr, + .len = 8, + .buf = buf, /* write time/date */ }; buf[0] = EM3027_REG_WATCH_SEC; diff --git a/drivers/rtc/rtc-isl1208.c b/drivers/rtc/rtc-isl1208.c index dd2aeee6c66..26c81f23360 100644 --- a/drivers/rtc/rtc-isl1208.c +++ b/drivers/rtc/rtc-isl1208.c @@ -68,9 +68,17 @@ isl1208_i2c_read_regs(struct i2c_client *client, u8 reg, u8 buf[], { u8 reg_addr[1] = { reg }; struct i2c_msg msgs[2] = { - {client->addr, 0, sizeof(reg_addr), reg_addr} - , - {client->addr, I2C_M_RD, len, buf} + { + .addr = client->addr, + .len = sizeof(reg_addr), + .buf = reg_addr + }, + { + .addr = client->addr, + .flags = I2C_M_RD, + .len = len, + .buf = buf + } }; int ret; @@ -90,7 +98,11 @@ isl1208_i2c_set_regs(struct i2c_client *client, u8 reg, u8 const buf[], { u8 i2c_buf[ISL1208_REG_USR2 + 2]; struct i2c_msg msgs[1] = { - {client->addr, 0, len + 1, i2c_buf} + { + .addr = client->addr, + .len = len + 1, + .buf = i2c_buf + } }; int ret; @@ -697,6 +709,7 @@ isl1208_remove(struct i2c_client *client) static const struct i2c_device_id isl1208_id[] = { { "isl1208", 0 }, + { "isl1218", 0 }, { } }; MODULE_DEVICE_TABLE(i2c, isl1208_id); diff --git a/drivers/rtc/rtc-jz4740.c b/drivers/rtc/rtc-jz4740.c index 05ab227eeff..1224182d3ea 100644 --- a/drivers/rtc/rtc-jz4740.c +++ b/drivers/rtc/rtc-jz4740.c @@ -42,7 +42,7 @@ struct jz4740_rtc { struct rtc_device *rtc; - unsigned int irq; + int irq; spinlock_t lock; }; diff --git a/drivers/rtc/rtc-m41t80.c b/drivers/rtc/rtc-m41t80.c index 4e0f84af99a..b885bcd0890 100644 --- a/drivers/rtc/rtc-m41t80.c +++ b/drivers/rtc/rtc-m41t80.c @@ -213,163 +213,14 @@ static int m41t80_rtc_set_time(struct device *dev, struct rtc_time *tm) return m41t80_set_datetime(to_i2c_client(dev), tm); } -static int m41t80_rtc_alarm_irq_enable(struct device *dev, unsigned int enabled) -{ - struct i2c_client *client = to_i2c_client(dev); - int rc; - - rc = i2c_smbus_read_byte_data(client, M41T80_REG_ALARM_MON); - if (rc < 0) - goto err; - - if (enabled) - rc |= M41T80_ALMON_AFE; - else - rc &= ~M41T80_ALMON_AFE; - - if (i2c_smbus_write_byte_data(client, M41T80_REG_ALARM_MON, rc) < 0) - goto err; - - return 0; -err: - return -EIO; -} - -static int m41t80_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *t) -{ - struct i2c_client *client = to_i2c_client(dev); - u8 wbuf[1 + M41T80_ALARM_REG_SIZE]; - u8 *buf = &wbuf[1]; - u8 *reg = buf - M41T80_REG_ALARM_MON; - u8 dt_addr[1] = { M41T80_REG_ALARM_MON }; - struct i2c_msg msgs_in[] = { - { - .addr = client->addr, - .flags = 0, - .len = 1, - .buf = dt_addr, - }, - { - .addr = client->addr, - .flags = I2C_M_RD, - .len = M41T80_ALARM_REG_SIZE, - .buf = buf, - }, - }; - struct i2c_msg msgs[] = { - { - .addr = client->addr, - .flags = 0, - .len = 1 + M41T80_ALARM_REG_SIZE, - .buf = wbuf, - }, - }; - - if (i2c_transfer(client->adapter, msgs_in, 2) < 0) { - dev_err(&client->dev, "read error\n"); - return -EIO; - } - reg[M41T80_REG_ALARM_MON] &= ~(0x1f | M41T80_ALMON_AFE); - reg[M41T80_REG_ALARM_DAY] = 0; - reg[M41T80_REG_ALARM_HOUR] &= ~(0x3f | 0x80); - reg[M41T80_REG_ALARM_MIN] = 0; - reg[M41T80_REG_ALARM_SEC] = 0; - - wbuf[0] = M41T80_REG_ALARM_MON; /* offset into rtc's regs */ - reg[M41T80_REG_ALARM_SEC] |= t->time.tm_sec >= 0 ? - bin2bcd(t->time.tm_sec) : 0x80; - reg[M41T80_REG_ALARM_MIN] |= t->time.tm_min >= 0 ? - bin2bcd(t->time.tm_min) : 0x80; - reg[M41T80_REG_ALARM_HOUR] |= t->time.tm_hour >= 0 ? - bin2bcd(t->time.tm_hour) : 0x80; - reg[M41T80_REG_ALARM_DAY] |= t->time.tm_mday >= 0 ? - bin2bcd(t->time.tm_mday) : 0x80; - if (t->time.tm_mon >= 0) - reg[M41T80_REG_ALARM_MON] |= bin2bcd(t->time.tm_mon + 1); - else - reg[M41T80_REG_ALARM_DAY] |= 0x40; - - if (i2c_transfer(client->adapter, msgs, 1) != 1) { - dev_err(&client->dev, "write error\n"); - return -EIO; - } - - if (t->enabled) { - reg[M41T80_REG_ALARM_MON] |= M41T80_ALMON_AFE; - if (i2c_smbus_write_byte_data(client, M41T80_REG_ALARM_MON, - reg[M41T80_REG_ALARM_MON]) < 0) { - dev_err(&client->dev, "write error\n"); - return -EIO; - } - } - return 0; -} - -static int m41t80_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *t) -{ - struct i2c_client *client = to_i2c_client(dev); - u8 buf[M41T80_ALARM_REG_SIZE + 1]; /* all alarm regs and flags */ - u8 dt_addr[1] = { M41T80_REG_ALARM_MON }; - u8 *reg = buf - M41T80_REG_ALARM_MON; - struct i2c_msg msgs[] = { - { - .addr = client->addr, - .flags = 0, - .len = 1, - .buf = dt_addr, - }, - { - .addr = client->addr, - .flags = I2C_M_RD, - .len = M41T80_ALARM_REG_SIZE + 1, - .buf = buf, - }, - }; - - if (i2c_transfer(client->adapter, msgs, 2) < 0) { - dev_err(&client->dev, "read error\n"); - return -EIO; - } - t->time.tm_sec = -1; - t->time.tm_min = -1; - t->time.tm_hour = -1; - t->time.tm_mday = -1; - t->time.tm_mon = -1; - if (!(reg[M41T80_REG_ALARM_SEC] & 0x80)) - t->time.tm_sec = bcd2bin(reg[M41T80_REG_ALARM_SEC] & 0x7f); - if (!(reg[M41T80_REG_ALARM_MIN] & 0x80)) - t->time.tm_min = bcd2bin(reg[M41T80_REG_ALARM_MIN] & 0x7f); - if (!(reg[M41T80_REG_ALARM_HOUR] & 0x80)) - t->time.tm_hour = bcd2bin(reg[M41T80_REG_ALARM_HOUR] & 0x3f); - if (!(reg[M41T80_REG_ALARM_DAY] & 0x80)) - t->time.tm_mday = bcd2bin(reg[M41T80_REG_ALARM_DAY] & 0x3f); - if (!(reg[M41T80_REG_ALARM_DAY] & 0x40)) - t->time.tm_mon = bcd2bin(reg[M41T80_REG_ALARM_MON] & 0x1f) - 1; - t->time.tm_year = -1; - t->time.tm_wday = -1; - t->time.tm_yday = -1; - t->time.tm_isdst = -1; - t->enabled = !!(reg[M41T80_REG_ALARM_MON] & M41T80_ALMON_AFE); - t->pending = !!(reg[M41T80_REG_FLAGS] & M41T80_FLAGS_AF); - return 0; -} - +/* + * XXX - m41t80 alarm functionality is reported broken. + * until it is fixed, don't register alarm functions. + */ static struct rtc_class_ops m41t80_rtc_ops = { .read_time = m41t80_rtc_read_time, .set_time = m41t80_rtc_set_time, - /* - * XXX - m41t80 alarm functionality is reported broken. - * until it is fixed, don't register alarm functions. - * - .read_alarm = m41t80_rtc_read_alarm, - .set_alarm = m41t80_rtc_set_alarm, - */ .proc = m41t80_rtc_proc, - /* - * See above comment on broken alarm - * - .alarm_irq_enable = m41t80_rtc_alarm_irq_enable, - */ }; #if defined(CONFIG_RTC_INTF_SYSFS) || defined(CONFIG_RTC_INTF_SYSFS_MODULE) diff --git a/drivers/rtc/rtc-max8907.c b/drivers/rtc/rtc-max8907.c new file mode 100644 index 00000000000..e094ffa434f --- /dev/null +++ b/drivers/rtc/rtc-max8907.c @@ -0,0 +1,244 @@ +/* + * RTC driver for Maxim MAX8907 + * + * Copyright (c) 2011-2012, NVIDIA Corporation. + * + * Based on drivers/rtc/rtc-max8925.c, + * Copyright (C) 2009-2010 Marvell International Ltd. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include <linux/bcd.h> +#include <linux/i2c.h> +#include <linux/mfd/max8907.h> +#include <linux/module.h> +#include <linux/platform_device.h> +#include <linux/regmap.h> +#include <linux/rtc.h> +#include <linux/slab.h> + +enum { + RTC_SEC = 0, + RTC_MIN, + RTC_HOUR, + RTC_WEEKDAY, + RTC_DATE, + RTC_MONTH, + RTC_YEAR1, + RTC_YEAR2, +}; + +#define TIME_NUM 8 +#define ALARM_1SEC (1 << 7) +#define HOUR_12 (1 << 7) +#define HOUR_AM_PM (1 << 5) +#define ALARM0_IRQ (1 << 3) +#define ALARM1_IRQ (1 << 2) +#define ALARM0_STATUS (1 << 2) +#define ALARM1_STATUS (1 << 1) + +struct max8907_rtc { + struct max8907 *max8907; + struct regmap *regmap; + struct rtc_device *rtc_dev; + int irq; +}; + +static irqreturn_t max8907_irq_handler(int irq, void *data) +{ + struct max8907_rtc *rtc = data; + + regmap_update_bits(rtc->regmap, MAX8907_REG_ALARM0_CNTL, 0x7f, 0); + + rtc_update_irq(rtc->rtc_dev, 1, RTC_IRQF | RTC_AF); + + return IRQ_HANDLED; +} + +static void regs_to_tm(u8 *regs, struct rtc_time *tm) +{ + tm->tm_year = bcd2bin(regs[RTC_YEAR2]) * 100 + + bcd2bin(regs[RTC_YEAR1]) - 1900; + tm->tm_mon = bcd2bin(regs[RTC_MONTH] & 0x1f) - 1; + tm->tm_mday = bcd2bin(regs[RTC_DATE] & 0x3f); + tm->tm_wday = (regs[RTC_WEEKDAY] & 0x07) - 1; + if (regs[RTC_HOUR] & HOUR_12) { + tm->tm_hour = bcd2bin(regs[RTC_HOUR] & 0x01f); + if (tm->tm_hour == 12) + tm->tm_hour = 0; + if (regs[RTC_HOUR] & HOUR_AM_PM) + tm->tm_hour += 12; + } else { + tm->tm_hour = bcd2bin(regs[RTC_HOUR] & 0x03f); + } + tm->tm_min = bcd2bin(regs[RTC_MIN] & 0x7f); + tm->tm_sec = bcd2bin(regs[RTC_SEC] & 0x7f); +} + +static void tm_to_regs(struct rtc_time *tm, u8 *regs) +{ + u8 high, low; + + high = (tm->tm_year + 1900) / 100; + low = tm->tm_year % 100; + regs[RTC_YEAR2] = bin2bcd(high); + regs[RTC_YEAR1] = bin2bcd(low); + regs[RTC_MONTH] = bin2bcd(tm->tm_mon + 1); + regs[RTC_DATE] = bin2bcd(tm->tm_mday); + regs[RTC_WEEKDAY] = tm->tm_wday + 1; + regs[RTC_HOUR] = bin2bcd(tm->tm_hour); + regs[RTC_MIN] = bin2bcd(tm->tm_min); + regs[RTC_SEC] = bin2bcd(tm->tm_sec); +} + +static int max8907_rtc_read_time(struct device *dev, struct rtc_time *tm) +{ + struct max8907_rtc *rtc = dev_get_drvdata(dev); + u8 regs[TIME_NUM]; + int ret; + + ret = regmap_bulk_read(rtc->regmap, MAX8907_REG_RTC_SEC, regs, + TIME_NUM); + if (ret < 0) + return ret; + + regs_to_tm(regs, tm); + + return 0; +} + +static int max8907_rtc_set_time(struct device *dev, struct rtc_time *tm) +{ + struct max8907_rtc *rtc = dev_get_drvdata(dev); + u8 regs[TIME_NUM]; + + tm_to_regs(tm, regs); + + return regmap_bulk_write(rtc->regmap, MAX8907_REG_RTC_SEC, regs, + TIME_NUM); +} + +static int max8907_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm) +{ + struct max8907_rtc *rtc = dev_get_drvdata(dev); + u8 regs[TIME_NUM]; + unsigned int val; + int ret; + + ret = regmap_bulk_read(rtc->regmap, MAX8907_REG_ALARM0_SEC, regs, + TIME_NUM); + if (ret < 0) + return ret; + + regs_to_tm(regs, &alrm->time); + + ret = regmap_read(rtc->regmap, MAX8907_REG_ALARM0_CNTL, &val); + if (ret < 0) + return ret; + + alrm->enabled = !!(val & 0x7f); + + return 0; +} + +static int max8907_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm) +{ + struct max8907_rtc *rtc = dev_get_drvdata(dev); + u8 regs[TIME_NUM]; + int ret; + + tm_to_regs(&alrm->time, regs); + + /* Disable alarm while we update the target time */ + ret = regmap_update_bits(rtc->regmap, MAX8907_REG_ALARM0_CNTL, 0x7f, 0); + if (ret < 0) + return ret; + + ret = regmap_bulk_write(rtc->regmap, MAX8907_REG_ALARM0_SEC, regs, + TIME_NUM); + if (ret < 0) + return ret; + + if (alrm->enabled) + ret = regmap_update_bits(rtc->regmap, MAX8907_REG_ALARM0_CNTL, + 0x7f, 0x7f); + + return ret; +} + +static const struct rtc_class_ops max8907_rtc_ops = { + .read_time = max8907_rtc_read_time, + .set_time = max8907_rtc_set_time, + .read_alarm = max8907_rtc_read_alarm, + .set_alarm = max8907_rtc_set_alarm, +}; + +static int __devinit max8907_rtc_probe(struct platform_device *pdev) +{ + struct max8907 *max8907 = dev_get_drvdata(pdev->dev.parent); + struct max8907_rtc *rtc; + int ret; + + rtc = devm_kzalloc(&pdev->dev, sizeof(*rtc), GFP_KERNEL); + if (!rtc) + return -ENOMEM; + platform_set_drvdata(pdev, rtc); + + rtc->max8907 = max8907; + rtc->regmap = max8907->regmap_rtc; + + rtc->rtc_dev = rtc_device_register("max8907-rtc", &pdev->dev, + &max8907_rtc_ops, THIS_MODULE); + if (IS_ERR(rtc->rtc_dev)) { + ret = PTR_ERR(rtc->rtc_dev); + dev_err(&pdev->dev, "Failed to register RTC device: %d\n", ret); + return ret; + } + + rtc->irq = regmap_irq_get_virq(max8907->irqc_rtc, + MAX8907_IRQ_RTC_ALARM0); + if (rtc->irq < 0) { + ret = rtc->irq; + goto err_unregister; + } + + ret = request_threaded_irq(rtc->irq, NULL, max8907_irq_handler, + IRQF_ONESHOT, "max8907-alarm0", rtc); + if (ret < 0) { + dev_err(&pdev->dev, "Failed to request IRQ%d: %d\n", + rtc->irq, ret); + goto err_unregister; + } + + return 0; + +err_unregister: + rtc_device_unregister(rtc->rtc_dev); + return ret; +} + +static int __devexit max8907_rtc_remove(struct platform_device *pdev) +{ + struct max8907_rtc *rtc = platform_get_drvdata(pdev); + + free_irq(rtc->irq, rtc); + rtc_device_unregister(rtc->rtc_dev); + + return 0; +} + +static struct platform_driver max8907_rtc_driver = { + .driver = { + .name = "max8907-rtc", + .owner = THIS_MODULE, + }, + .probe = max8907_rtc_probe, + .remove = __devexit_p(max8907_rtc_remove), +}; +module_platform_driver(max8907_rtc_driver); + +MODULE_DESCRIPTION("Maxim MAX8907 RTC driver"); +MODULE_LICENSE("GPL v2"); diff --git a/drivers/rtc/rtc-mxc.c b/drivers/rtc/rtc-mxc.c index e3e50d69baf..cd0106293a4 100644 --- a/drivers/rtc/rtc-mxc.c +++ b/drivers/rtc/rtc-mxc.c @@ -343,7 +343,7 @@ static struct rtc_class_ops mxc_rtc_ops = { .alarm_irq_enable = mxc_rtc_alarm_irq_enable, }; -static int __init mxc_rtc_probe(struct platform_device *pdev) +static int __devinit mxc_rtc_probe(struct platform_device *pdev) { struct resource *res; struct rtc_device *rtc; @@ -367,14 +367,14 @@ static int __init mxc_rtc_probe(struct platform_device *pdev) pdata->ioaddr = devm_ioremap(&pdev->dev, res->start, resource_size(res)); - pdata->clk = clk_get(&pdev->dev, "rtc"); + pdata->clk = devm_clk_get(&pdev->dev, NULL); if (IS_ERR(pdata->clk)) { dev_err(&pdev->dev, "unable to get clock!\n"); ret = PTR_ERR(pdata->clk); goto exit_free_pdata; } - clk_enable(pdata->clk); + clk_prepare_enable(pdata->clk); rate = clk_get_rate(pdata->clk); if (rate == 32768) @@ -426,22 +426,20 @@ static int __init mxc_rtc_probe(struct platform_device *pdev) exit_clr_drvdata: platform_set_drvdata(pdev, NULL); exit_put_clk: - clk_disable(pdata->clk); - clk_put(pdata->clk); + clk_disable_unprepare(pdata->clk); exit_free_pdata: return ret; } -static int __exit mxc_rtc_remove(struct platform_device *pdev) +static int __devexit mxc_rtc_remove(struct platform_device *pdev) { struct rtc_plat_data *pdata = platform_get_drvdata(pdev); rtc_device_unregister(pdata->rtc); - clk_disable(pdata->clk); - clk_put(pdata->clk); + clk_disable_unprepare(pdata->clk); platform_set_drvdata(pdev, NULL); return 0; @@ -482,21 +480,11 @@ static struct platform_driver mxc_rtc_driver = { #endif .owner = THIS_MODULE, }, - .remove = __exit_p(mxc_rtc_remove), + .probe = mxc_rtc_probe, + .remove = __devexit_p(mxc_rtc_remove), }; -static int __init mxc_rtc_init(void) -{ - return platform_driver_probe(&mxc_rtc_driver, mxc_rtc_probe); -} - -static void __exit mxc_rtc_exit(void) -{ - platform_driver_unregister(&mxc_rtc_driver); -} - -module_init(mxc_rtc_init); -module_exit(mxc_rtc_exit); +module_platform_driver(mxc_rtc_driver) MODULE_AUTHOR("Daniel Mack <daniel@caiaq.de>"); MODULE_DESCRIPTION("RTC driver for Freescale MXC"); diff --git a/drivers/rtc/rtc-pcf8563.c b/drivers/rtc/rtc-pcf8563.c index c2fe426a6ef..98e3a2b681e 100644 --- a/drivers/rtc/rtc-pcf8563.c +++ b/drivers/rtc/rtc-pcf8563.c @@ -78,8 +78,17 @@ static int pcf8563_get_datetime(struct i2c_client *client, struct rtc_time *tm) unsigned char buf[13] = { PCF8563_REG_ST1 }; struct i2c_msg msgs[] = { - { client->addr, 0, 1, buf }, /* setup read ptr */ - { client->addr, I2C_M_RD, 13, buf }, /* read status + date */ + {/* setup read ptr */ + .addr = client->addr, + .len = 1, + .buf = buf + }, + {/* read status + date */ + .addr = client->addr, + .flags = I2C_M_RD, + .len = 13, + .buf = buf + }, }; /* read registers */ diff --git a/drivers/rtc/rtc-proc.c b/drivers/rtc/rtc-proc.c index 0a59fda5c09..e96236ac2e7 100644 --- a/drivers/rtc/rtc-proc.c +++ b/drivers/rtc/rtc-proc.c @@ -18,6 +18,26 @@ #include "rtc-core.h" +#define NAME_SIZE 10 + +#if defined(CONFIG_RTC_HCTOSYS_DEVICE) +static bool is_rtc_hctosys(struct rtc_device *rtc) +{ + int size; + char name[NAME_SIZE]; + + size = scnprintf(name, NAME_SIZE, "rtc%d", rtc->id); + if (size > NAME_SIZE) + return false; + + return !strncmp(name, CONFIG_RTC_HCTOSYS_DEVICE, NAME_SIZE); +} +#else +static bool is_rtc_hctosys(struct rtc_device *rtc) +{ + return (rtc->id == 0); +} +#endif static int rtc_proc_show(struct seq_file *seq, void *offset) { @@ -117,12 +137,12 @@ static const struct file_operations rtc_proc_fops = { void rtc_proc_add_device(struct rtc_device *rtc) { - if (rtc->id == 0) + if (is_rtc_hctosys(rtc)) proc_create_data("driver/rtc", 0, NULL, &rtc_proc_fops, rtc); } void rtc_proc_del_device(struct rtc_device *rtc) { - if (rtc->id == 0) + if (is_rtc_hctosys(rtc)) remove_proc_entry("driver/rtc", NULL); } diff --git a/drivers/rtc/rtc-rc5t583.c b/drivers/rtc/rtc-rc5t583.c new file mode 100644 index 00000000000..cdb140c29c5 --- /dev/null +++ b/drivers/rtc/rtc-rc5t583.c @@ -0,0 +1,331 @@ +/* + * rtc-rc5t583.c -- RICOH RC5T583 Real Time Clock + * + * Copyright (c) 2012, NVIDIA CORPORATION. All rights reserved. + * Author: Venu Byravarasu <vbyravarasu@nvidia.com> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2, as published by the Free Software Foundation. + * + * This program is distributed in the hope it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. */ + +#include <linux/kernel.h> +#include <linux/errno.h> +#include <linux/init.h> +#include <linux/module.h> +#include <linux/types.h> +#include <linux/rtc.h> +#include <linux/bcd.h> +#include <linux/platform_device.h> +#include <linux/interrupt.h> +#include <linux/mfd/rc5t583.h> + +struct rc5t583_rtc { + struct rtc_device *rtc; + /* To store the list of enabled interrupts, during system suspend */ + u32 irqen; +}; + +/* Total number of RTC registers needed to set time*/ +#define NUM_TIME_REGS (RC5T583_RTC_YEAR - RC5T583_RTC_SEC + 1) + +/* Total number of RTC registers needed to set Y-Alarm*/ +#define NUM_YAL_REGS (RC5T583_RTC_AY_YEAR - RC5T583_RTC_AY_MIN + 1) + +/* Set Y-Alarm interrupt */ +#define SET_YAL BIT(5) + +/* Get Y-Alarm interrupt status*/ +#define GET_YAL_STATUS BIT(3) + +static int rc5t583_rtc_alarm_irq_enable(struct device *dev, unsigned enabled) +{ + struct rc5t583 *rc5t583 = dev_get_drvdata(dev->parent); + u8 val; + + /* Set Y-Alarm, based on 'enabled' */ + val = enabled ? SET_YAL : 0; + + return regmap_update_bits(rc5t583->regmap, RC5T583_RTC_CTL1, SET_YAL, + val); +} + +/* + * Gets current rc5t583 RTC time and date parameters. + * + * The RTC's time/alarm representation is not what gmtime(3) requires + * Linux to use: + * + * - Months are 1..12 vs Linux 0-11 + * - Years are 0..99 vs Linux 1900..N (we assume 21st century) + */ +static int rc5t583_rtc_read_time(struct device *dev, struct rtc_time *tm) +{ + struct rc5t583 *rc5t583 = dev_get_drvdata(dev->parent); + u8 rtc_data[NUM_TIME_REGS]; + int ret; + + ret = regmap_bulk_read(rc5t583->regmap, RC5T583_RTC_SEC, rtc_data, + NUM_TIME_REGS); + if (ret < 0) { + dev_err(dev, "RTC read time failed with err:%d\n", ret); + return ret; + } + + tm->tm_sec = bcd2bin(rtc_data[0]); + tm->tm_min = bcd2bin(rtc_data[1]); + tm->tm_hour = bcd2bin(rtc_data[2]); + tm->tm_wday = bcd2bin(rtc_data[3]); + tm->tm_mday = bcd2bin(rtc_data[4]); + tm->tm_mon = bcd2bin(rtc_data[5]) - 1; + tm->tm_year = bcd2bin(rtc_data[6]) + 100; + + return ret; +} + +static int rc5t583_rtc_set_time(struct device *dev, struct rtc_time *tm) +{ + struct rc5t583 *rc5t583 = dev_get_drvdata(dev->parent); + unsigned char rtc_data[NUM_TIME_REGS]; + int ret; + + rtc_data[0] = bin2bcd(tm->tm_sec); + rtc_data[1] = bin2bcd(tm->tm_min); + rtc_data[2] = bin2bcd(tm->tm_hour); + rtc_data[3] = bin2bcd(tm->tm_wday); + rtc_data[4] = bin2bcd(tm->tm_mday); + rtc_data[5] = bin2bcd(tm->tm_mon + 1); + rtc_data[6] = bin2bcd(tm->tm_year - 100); + + ret = regmap_bulk_write(rc5t583->regmap, RC5T583_RTC_SEC, rtc_data, + NUM_TIME_REGS); + if (ret < 0) { + dev_err(dev, "RTC set time failed with error %d\n", ret); + return ret; + } + + return ret; +} + +static int rc5t583_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alm) +{ + struct rc5t583 *rc5t583 = dev_get_drvdata(dev->parent); + unsigned char alarm_data[NUM_YAL_REGS]; + u32 interrupt_enable; + int ret; + + ret = regmap_bulk_read(rc5t583->regmap, RC5T583_RTC_AY_MIN, alarm_data, + NUM_YAL_REGS); + if (ret < 0) { + dev_err(dev, "rtc_read_alarm error %d\n", ret); + return ret; + } + + alm->time.tm_min = bcd2bin(alarm_data[0]); + alm->time.tm_hour = bcd2bin(alarm_data[1]); + alm->time.tm_mday = bcd2bin(alarm_data[2]); + alm->time.tm_mon = bcd2bin(alarm_data[3]) - 1; + alm->time.tm_year = bcd2bin(alarm_data[4]) + 100; + + ret = regmap_read(rc5t583->regmap, RC5T583_RTC_CTL1, &interrupt_enable); + if (ret < 0) + return ret; + + /* check if YALE is set */ + if (interrupt_enable & SET_YAL) + alm->enabled = 1; + + return ret; +} + +static int rc5t583_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alm) +{ + struct rc5t583 *rc5t583 = dev_get_drvdata(dev->parent); + unsigned char alarm_data[NUM_YAL_REGS]; + int ret; + + ret = rc5t583_rtc_alarm_irq_enable(dev, 0); + if (ret) + return ret; + + alarm_data[0] = bin2bcd(alm->time.tm_min); + alarm_data[1] = bin2bcd(alm->time.tm_hour); + alarm_data[2] = bin2bcd(alm->time.tm_mday); + alarm_data[3] = bin2bcd(alm->time.tm_mon + 1); + alarm_data[4] = bin2bcd(alm->time.tm_year - 100); + + ret = regmap_bulk_write(rc5t583->regmap, RC5T583_RTC_AY_MIN, alarm_data, + NUM_YAL_REGS); + if (ret) { + dev_err(dev, "rtc_set_alarm error %d\n", ret); + return ret; + } + + if (alm->enabled) + ret = rc5t583_rtc_alarm_irq_enable(dev, 1); + + return ret; +} + +static irqreturn_t rc5t583_rtc_interrupt(int irq, void *rtc) +{ + struct device *dev = rtc; + struct rc5t583 *rc5t583 = dev_get_drvdata(dev->parent); + struct rc5t583_rtc *rc5t583_rtc = dev_get_drvdata(dev); + unsigned long events = 0; + int ret; + u32 rtc_reg; + + ret = regmap_read(rc5t583->regmap, RC5T583_RTC_CTL2, &rtc_reg); + if (ret < 0) + return IRQ_NONE; + + if (rtc_reg & GET_YAL_STATUS) { + events = RTC_IRQF | RTC_AF; + /* clear pending Y-alarm interrupt bit */ + rtc_reg &= ~GET_YAL_STATUS; + } + + ret = regmap_write(rc5t583->regmap, RC5T583_RTC_CTL2, rtc_reg); + if (ret) + return IRQ_NONE; + + /* Notify RTC core on event */ + rtc_update_irq(rc5t583_rtc->rtc, 1, events); + + return IRQ_HANDLED; +} + +static const struct rtc_class_ops rc5t583_rtc_ops = { + .read_time = rc5t583_rtc_read_time, + .set_time = rc5t583_rtc_set_time, + .read_alarm = rc5t583_rtc_read_alarm, + .set_alarm = rc5t583_rtc_set_alarm, + .alarm_irq_enable = rc5t583_rtc_alarm_irq_enable, +}; + +static int __devinit rc5t583_rtc_probe(struct platform_device *pdev) +{ + struct rc5t583 *rc5t583 = dev_get_drvdata(pdev->dev.parent); + struct rc5t583_rtc *ricoh_rtc; + struct rc5t583_platform_data *pmic_plat_data; + int ret; + int irq; + + ricoh_rtc = devm_kzalloc(&pdev->dev, sizeof(struct rc5t583_rtc), + GFP_KERNEL); + if (!ricoh_rtc) + return -ENOMEM; + + platform_set_drvdata(pdev, ricoh_rtc); + + /* Clear pending interrupts */ + ret = regmap_write(rc5t583->regmap, RC5T583_RTC_CTL2, 0); + if (ret < 0) + return ret; + + /* clear RTC Adjust register */ + ret = regmap_write(rc5t583->regmap, RC5T583_RTC_ADJ, 0); + if (ret < 0) { + dev_err(&pdev->dev, "unable to program rtc_adjust reg\n"); + return -EBUSY; + } + + pmic_plat_data = dev_get_platdata(rc5t583->dev); + irq = pmic_plat_data->irq_base; + if (irq <= 0) { + dev_warn(&pdev->dev, "Wake up is not possible as irq = %d\n", + irq); + return ret; + } + + irq += RC5T583_IRQ_YALE; + ret = devm_request_threaded_irq(&pdev->dev, irq, NULL, + rc5t583_rtc_interrupt, IRQF_TRIGGER_LOW, + "rtc-rc5t583", &pdev->dev); + if (ret < 0) { + dev_err(&pdev->dev, "IRQ is not free.\n"); + return ret; + } + device_init_wakeup(&pdev->dev, 1); + + ricoh_rtc->rtc = rtc_device_register(pdev->name, &pdev->dev, + &rc5t583_rtc_ops, THIS_MODULE); + if (IS_ERR(ricoh_rtc->rtc)) { + ret = PTR_ERR(ricoh_rtc->rtc); + dev_err(&pdev->dev, "RTC device register: err %d\n", ret); + return ret; + } + + return 0; +} + +/* + * Disable rc5t583 RTC interrupts. + * Sets status flag to free. + */ +static int __devexit rc5t583_rtc_remove(struct platform_device *pdev) +{ + struct rc5t583_rtc *rc5t583_rtc = dev_get_drvdata(&pdev->dev); + + rc5t583_rtc_alarm_irq_enable(&rc5t583_rtc->rtc->dev, 0); + + rtc_device_unregister(rc5t583_rtc->rtc); + return 0; +} + +#ifdef CONFIG_PM_SLEEP + +static int rc5t583_rtc_suspend(struct device *dev) +{ + struct rc5t583 *rc5t583 = dev_get_drvdata(dev->parent); + struct rc5t583_rtc *rc5t583_rtc = dev_get_drvdata(dev); + int ret; + + /* Store current list of enabled interrupts*/ + ret = regmap_read(rc5t583->regmap, RC5T583_RTC_CTL1, + &rc5t583_rtc->irqen); + return ret; +} + +static int rc5t583_rtc_resume(struct device *dev) +{ + struct rc5t583 *rc5t583 = dev_get_drvdata(dev->parent); + struct rc5t583_rtc *rc5t583_rtc = dev_get_drvdata(dev); + + /* Restore list of enabled interrupts before suspend */ + return regmap_write(rc5t583->regmap, RC5T583_RTC_CTL1, + rc5t583_rtc->irqen); +} + +static const struct dev_pm_ops rc5t583_rtc_pm_ops = { + .suspend = rc5t583_rtc_suspend, + .resume = rc5t583_rtc_resume, +}; + +#define DEV_PM_OPS (&rc5t583_rtc_pm_ops) +#else +#define DEV_PM_OPS NULL +#endif + +static struct platform_driver rc5t583_rtc_driver = { + .probe = rc5t583_rtc_probe, + .remove = __devexit_p(rc5t583_rtc_remove), + .driver = { + .owner = THIS_MODULE, + .name = "rtc-rc5t583", + .pm = DEV_PM_OPS, + }, +}; + +module_platform_driver(rc5t583_rtc_driver); +MODULE_ALIAS("platform:rtc-rc5t583"); +MODULE_AUTHOR("Venu Byravarasu <vbyravarasu@nvidia.com>"); +MODULE_LICENSE("GPL v2"); diff --git a/drivers/rtc/rtc-rs5c372.c b/drivers/rtc/rtc-rs5c372.c index fb4842c3544..76f565ae384 100644 --- a/drivers/rtc/rtc-rs5c372.c +++ b/drivers/rtc/rtc-rs5c372.c @@ -104,7 +104,12 @@ static int rs5c_get_regs(struct rs5c372 *rs5c) { struct i2c_client *client = rs5c->client; struct i2c_msg msgs[] = { - { client->addr, I2C_M_RD, sizeof rs5c->buf, rs5c->buf }, + { + .addr = client->addr, + .flags = I2C_M_RD, + .len = sizeof(rs5c->buf), + .buf = rs5c->buf + }, }; /* This implements the third reading method from the datasheet, using diff --git a/drivers/rtc/rtc-s35390a.c b/drivers/rtc/rtc-s35390a.c index c9562ceedef..8a092325188 100644 --- a/drivers/rtc/rtc-s35390a.c +++ b/drivers/rtc/rtc-s35390a.c @@ -19,6 +19,8 @@ #define S35390A_CMD_STATUS1 0 #define S35390A_CMD_STATUS2 1 #define S35390A_CMD_TIME1 2 +#define S35390A_CMD_TIME2 3 +#define S35390A_CMD_INT2_REG1 5 #define S35390A_BYTE_YEAR 0 #define S35390A_BYTE_MONTH 1 @@ -28,12 +30,23 @@ #define S35390A_BYTE_MINS 5 #define S35390A_BYTE_SECS 6 +#define S35390A_ALRM_BYTE_WDAY 0 +#define S35390A_ALRM_BYTE_HOURS 1 +#define S35390A_ALRM_BYTE_MINS 2 + #define S35390A_FLAG_POC 0x01 #define S35390A_FLAG_BLD 0x02 #define S35390A_FLAG_24H 0x40 #define S35390A_FLAG_RESET 0x80 #define S35390A_FLAG_TEST 0x01 +#define S35390A_INT2_MODE_MASK 0xF0 + +#define S35390A_INT2_MODE_NOINTR 0x00 +#define S35390A_INT2_MODE_FREQ 0x10 +#define S35390A_INT2_MODE_ALARM 0x40 +#define S35390A_INT2_MODE_PMIN_EDG 0x20 + static const struct i2c_device_id s35390a_id[] = { { "s35390a", 0 }, { } @@ -50,7 +63,11 @@ static int s35390a_set_reg(struct s35390a *s35390a, int reg, char *buf, int len) { struct i2c_client *client = s35390a->client[reg]; struct i2c_msg msg[] = { - { client->addr, 0, len, buf }, + { + .addr = client->addr, + .len = len, + .buf = buf + }, }; if ((i2c_transfer(client->adapter, msg, 1)) != 1) @@ -63,7 +80,12 @@ static int s35390a_get_reg(struct s35390a *s35390a, int reg, char *buf, int len) { struct i2c_client *client = s35390a->client[reg]; struct i2c_msg msg[] = { - { client->addr, I2C_M_RD, len, buf }, + { + .addr = client->addr, + .flags = I2C_M_RD, + .len = len, + .buf = buf + }, }; if ((i2c_transfer(client->adapter, msg, 1)) != 1) @@ -184,6 +206,104 @@ static int s35390a_get_datetime(struct i2c_client *client, struct rtc_time *tm) return rtc_valid_tm(tm); } +static int s35390a_set_alarm(struct i2c_client *client, struct rtc_wkalrm *alm) +{ + struct s35390a *s35390a = i2c_get_clientdata(client); + char buf[3], sts = 0; + int err, i; + + dev_dbg(&client->dev, "%s: alm is secs=%d, mins=%d, hours=%d mday=%d, "\ + "mon=%d, year=%d, wday=%d\n", __func__, alm->time.tm_sec, + alm->time.tm_min, alm->time.tm_hour, alm->time.tm_mday, + alm->time.tm_mon, alm->time.tm_year, alm->time.tm_wday); + + /* disable interrupt */ + err = s35390a_set_reg(s35390a, S35390A_CMD_STATUS2, &sts, sizeof(sts)); + if (err < 0) + return err; + + /* clear pending interrupt, if any */ + err = s35390a_get_reg(s35390a, S35390A_CMD_STATUS1, &sts, sizeof(sts)); + if (err < 0) + return err; + + if (alm->enabled) + sts = S35390A_INT2_MODE_ALARM; + else + sts = S35390A_INT2_MODE_NOINTR; + + /* This chip expects the bits of each byte to be in reverse order */ + sts = bitrev8(sts); + + /* set interupt mode*/ + err = s35390a_set_reg(s35390a, S35390A_CMD_STATUS2, &sts, sizeof(sts)); + if (err < 0) + return err; + + if (alm->time.tm_wday != -1) + buf[S35390A_ALRM_BYTE_WDAY] = bin2bcd(alm->time.tm_wday) | 0x80; + + buf[S35390A_ALRM_BYTE_HOURS] = s35390a_hr2reg(s35390a, + alm->time.tm_hour) | 0x80; + buf[S35390A_ALRM_BYTE_MINS] = bin2bcd(alm->time.tm_min) | 0x80; + + if (alm->time.tm_hour >= 12) + buf[S35390A_ALRM_BYTE_HOURS] |= 0x40; + + for (i = 0; i < 3; ++i) + buf[i] = bitrev8(buf[i]); + + err = s35390a_set_reg(s35390a, S35390A_CMD_INT2_REG1, buf, + sizeof(buf)); + + return err; +} + +static int s35390a_read_alarm(struct i2c_client *client, struct rtc_wkalrm *alm) +{ + struct s35390a *s35390a = i2c_get_clientdata(client); + char buf[3], sts; + int i, err; + + err = s35390a_get_reg(s35390a, S35390A_CMD_STATUS2, &sts, sizeof(sts)); + if (err < 0) + return err; + + if (bitrev8(sts) != S35390A_INT2_MODE_ALARM) + return -EINVAL; + + err = s35390a_get_reg(s35390a, S35390A_CMD_INT2_REG1, buf, sizeof(buf)); + if (err < 0) + return err; + + /* This chip returns the bits of each byte in reverse order */ + for (i = 0; i < 3; ++i) { + buf[i] = bitrev8(buf[i]); + buf[i] &= ~0x80; + } + + alm->time.tm_wday = bcd2bin(buf[S35390A_ALRM_BYTE_WDAY]); + alm->time.tm_hour = s35390a_reg2hr(s35390a, + buf[S35390A_ALRM_BYTE_HOURS]); + alm->time.tm_min = bcd2bin(buf[S35390A_ALRM_BYTE_MINS]); + + dev_dbg(&client->dev, "%s: alm is mins=%d, hours=%d, wday=%d\n", + __func__, alm->time.tm_min, alm->time.tm_hour, + alm->time.tm_wday); + + return 0; +} + +static int s35390a_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alm) +{ + return s35390a_read_alarm(to_i2c_client(dev), alm); +} + +static int s35390a_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alm) +{ + return s35390a_set_alarm(to_i2c_client(dev), alm); +} + static int s35390a_rtc_read_time(struct device *dev, struct rtc_time *tm) { return s35390a_get_datetime(to_i2c_client(dev), tm); @@ -197,6 +317,9 @@ static int s35390a_rtc_set_time(struct device *dev, struct rtc_time *tm) static const struct rtc_class_ops s35390a_rtc_ops = { .read_time = s35390a_rtc_read_time, .set_time = s35390a_rtc_set_time, + .set_alarm = s35390a_rtc_set_alarm, + .read_alarm = s35390a_rtc_read_alarm, + }; static struct i2c_driver s35390a_driver; @@ -261,6 +384,8 @@ static int s35390a_probe(struct i2c_client *client, if (s35390a_get_datetime(client, &tm) < 0) dev_warn(&client->dev, "clock needs to be set\n"); + device_set_wakeup_capable(&client->dev, 1); + s35390a->rtc = rtc_device_register(s35390a_driver.driver.name, &client->dev, &s35390a_rtc_ops, THIS_MODULE); diff --git a/drivers/rtc/rtc-s3c.c b/drivers/rtc/rtc-s3c.c index bfbd92c8d1c..77823d21d31 100644 --- a/drivers/rtc/rtc-s3c.c +++ b/drivers/rtc/rtc-s3c.c @@ -476,13 +476,13 @@ static int __devinit s3c_rtc_probe(struct platform_device *pdev) s3c_rtc_tickno = platform_get_irq(pdev, 1); if (s3c_rtc_tickno < 0) { dev_err(&pdev->dev, "no irq for rtc tick\n"); - return -ENOENT; + return s3c_rtc_tickno; } s3c_rtc_alarmno = platform_get_irq(pdev, 0); if (s3c_rtc_alarmno < 0) { dev_err(&pdev->dev, "no irq for alarm\n"); - return -ENOENT; + return s3c_rtc_alarmno; } pr_debug("s3c2410_rtc: tick irq %d, alarm irq %d\n", diff --git a/drivers/rtc/rtc-snvs.c b/drivers/rtc/rtc-snvs.c new file mode 100644 index 00000000000..3c0da333f46 --- /dev/null +++ b/drivers/rtc/rtc-snvs.c @@ -0,0 +1,350 @@ +/* + * Copyright (C) 2011-2012 Freescale Semiconductor, Inc. + * + * The code contained herein is licensed under the GNU General Public + * License. You may obtain a copy of the GNU General Public License + * Version 2 or later at the following locations: + * + * http://www.opensource.org/licenses/gpl-license.html + * http://www.gnu.org/copyleft/gpl.html + */ + +#include <linux/init.h> +#include <linux/io.h> +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/of.h> +#include <linux/of_device.h> +#include <linux/platform_device.h> +#include <linux/rtc.h> + +/* These register offsets are relative to LP (Low Power) range */ +#define SNVS_LPCR 0x04 +#define SNVS_LPSR 0x18 +#define SNVS_LPSRTCMR 0x1c +#define SNVS_LPSRTCLR 0x20 +#define SNVS_LPTAR 0x24 +#define SNVS_LPPGDR 0x30 + +#define SNVS_LPCR_SRTC_ENV (1 << 0) +#define SNVS_LPCR_LPTA_EN (1 << 1) +#define SNVS_LPCR_LPWUI_EN (1 << 3) +#define SNVS_LPSR_LPTA (1 << 0) + +#define SNVS_LPPGDR_INIT 0x41736166 +#define CNTR_TO_SECS_SH 15 + +struct snvs_rtc_data { + struct rtc_device *rtc; + void __iomem *ioaddr; + int irq; + spinlock_t lock; +}; + +static u32 rtc_read_lp_counter(void __iomem *ioaddr) +{ + u64 read1, read2; + + do { + read1 = readl(ioaddr + SNVS_LPSRTCMR); + read1 <<= 32; + read1 |= readl(ioaddr + SNVS_LPSRTCLR); + + read2 = readl(ioaddr + SNVS_LPSRTCMR); + read2 <<= 32; + read2 |= readl(ioaddr + SNVS_LPSRTCLR); + } while (read1 != read2); + + /* Convert 47-bit counter to 32-bit raw second count */ + return (u32) (read1 >> CNTR_TO_SECS_SH); +} + +static void rtc_write_sync_lp(void __iomem *ioaddr) +{ + u32 count1, count2, count3; + int i; + + /* Wait for 3 CKIL cycles */ + for (i = 0; i < 3; i++) { + do { + count1 = readl(ioaddr + SNVS_LPSRTCLR); + count2 = readl(ioaddr + SNVS_LPSRTCLR); + } while (count1 != count2); + + /* Now wait until counter value changes */ + do { + do { + count2 = readl(ioaddr + SNVS_LPSRTCLR); + count3 = readl(ioaddr + SNVS_LPSRTCLR); + } while (count2 != count3); + } while (count3 == count1); + } +} + +static int snvs_rtc_enable(struct snvs_rtc_data *data, bool enable) +{ + unsigned long flags; + int timeout = 1000; + u32 lpcr; + + spin_lock_irqsave(&data->lock, flags); + + lpcr = readl(data->ioaddr + SNVS_LPCR); + if (enable) + lpcr |= SNVS_LPCR_SRTC_ENV; + else + lpcr &= ~SNVS_LPCR_SRTC_ENV; + writel(lpcr, data->ioaddr + SNVS_LPCR); + + spin_unlock_irqrestore(&data->lock, flags); + + while (--timeout) { + lpcr = readl(data->ioaddr + SNVS_LPCR); + + if (enable) { + if (lpcr & SNVS_LPCR_SRTC_ENV) + break; + } else { + if (!(lpcr & SNVS_LPCR_SRTC_ENV)) + break; + } + } + + if (!timeout) + return -ETIMEDOUT; + + return 0; +} + +static int snvs_rtc_read_time(struct device *dev, struct rtc_time *tm) +{ + struct snvs_rtc_data *data = dev_get_drvdata(dev); + unsigned long time = rtc_read_lp_counter(data->ioaddr); + + rtc_time_to_tm(time, tm); + + return 0; +} + +static int snvs_rtc_set_time(struct device *dev, struct rtc_time *tm) +{ + struct snvs_rtc_data *data = dev_get_drvdata(dev); + unsigned long time; + + rtc_tm_to_time(tm, &time); + + /* Disable RTC first */ + snvs_rtc_enable(data, false); + + /* Write 32-bit time to 47-bit timer, leaving 15 LSBs blank */ + writel(time << CNTR_TO_SECS_SH, data->ioaddr + SNVS_LPSRTCLR); + writel(time >> (32 - CNTR_TO_SECS_SH), data->ioaddr + SNVS_LPSRTCMR); + + /* Enable RTC again */ + snvs_rtc_enable(data, true); + + return 0; +} + +static int snvs_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm) +{ + struct snvs_rtc_data *data = dev_get_drvdata(dev); + u32 lptar, lpsr; + + lptar = readl(data->ioaddr + SNVS_LPTAR); + rtc_time_to_tm(lptar, &alrm->time); + + lpsr = readl(data->ioaddr + SNVS_LPSR); + alrm->pending = (lpsr & SNVS_LPSR_LPTA) ? 1 : 0; + + return 0; +} + +static int snvs_rtc_alarm_irq_enable(struct device *dev, unsigned int enable) +{ + struct snvs_rtc_data *data = dev_get_drvdata(dev); + u32 lpcr; + unsigned long flags; + + spin_lock_irqsave(&data->lock, flags); + + lpcr = readl(data->ioaddr + SNVS_LPCR); + if (enable) + lpcr |= (SNVS_LPCR_LPTA_EN | SNVS_LPCR_LPWUI_EN); + else + lpcr &= ~(SNVS_LPCR_LPTA_EN | SNVS_LPCR_LPWUI_EN); + writel(lpcr, data->ioaddr + SNVS_LPCR); + + spin_unlock_irqrestore(&data->lock, flags); + + rtc_write_sync_lp(data->ioaddr); + + return 0; +} + +static int snvs_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm) +{ + struct snvs_rtc_data *data = dev_get_drvdata(dev); + struct rtc_time *alrm_tm = &alrm->time; + unsigned long time; + unsigned long flags; + u32 lpcr; + + rtc_tm_to_time(alrm_tm, &time); + + spin_lock_irqsave(&data->lock, flags); + + /* Have to clear LPTA_EN before programming new alarm time in LPTAR */ + lpcr = readl(data->ioaddr + SNVS_LPCR); + lpcr &= ~SNVS_LPCR_LPTA_EN; + writel(lpcr, data->ioaddr + SNVS_LPCR); + + spin_unlock_irqrestore(&data->lock, flags); + + writel(time, data->ioaddr + SNVS_LPTAR); + + /* Clear alarm interrupt status bit */ + writel(SNVS_LPSR_LPTA, data->ioaddr + SNVS_LPSR); + + return snvs_rtc_alarm_irq_enable(dev, alrm->enabled); +} + +static const struct rtc_class_ops snvs_rtc_ops = { + .read_time = snvs_rtc_read_time, + .set_time = snvs_rtc_set_time, + .read_alarm = snvs_rtc_read_alarm, + .set_alarm = snvs_rtc_set_alarm, + .alarm_irq_enable = snvs_rtc_alarm_irq_enable, +}; + +static irqreturn_t snvs_rtc_irq_handler(int irq, void *dev_id) +{ + struct device *dev = dev_id; + struct snvs_rtc_data *data = dev_get_drvdata(dev); + u32 lpsr; + u32 events = 0; + + lpsr = readl(data->ioaddr + SNVS_LPSR); + + if (lpsr & SNVS_LPSR_LPTA) { + events |= (RTC_AF | RTC_IRQF); + + /* RTC alarm should be one-shot */ + snvs_rtc_alarm_irq_enable(dev, 0); + + rtc_update_irq(data->rtc, 1, events); + } + + /* clear interrupt status */ + writel(lpsr, data->ioaddr + SNVS_LPSR); + + return events ? IRQ_HANDLED : IRQ_NONE; +} + +static int __devinit snvs_rtc_probe(struct platform_device *pdev) +{ + struct snvs_rtc_data *data; + struct resource *res; + int ret; + + data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL); + if (!data) + return -ENOMEM; + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + data->ioaddr = devm_request_and_ioremap(&pdev->dev, res); + if (!data->ioaddr) + return -EADDRNOTAVAIL; + + data->irq = platform_get_irq(pdev, 0); + if (data->irq < 0) + return data->irq; + + platform_set_drvdata(pdev, data); + + spin_lock_init(&data->lock); + + /* Initialize glitch detect */ + writel(SNVS_LPPGDR_INIT, data->ioaddr + SNVS_LPPGDR); + + /* Clear interrupt status */ + writel(0xffffffff, data->ioaddr + SNVS_LPSR); + + /* Enable RTC */ + snvs_rtc_enable(data, true); + + device_init_wakeup(&pdev->dev, true); + + ret = devm_request_irq(&pdev->dev, data->irq, snvs_rtc_irq_handler, + IRQF_SHARED, "rtc alarm", &pdev->dev); + if (ret) { + dev_err(&pdev->dev, "failed to request irq %d: %d\n", + data->irq, ret); + return ret; + } + + data->rtc = rtc_device_register(pdev->name, &pdev->dev, + &snvs_rtc_ops, THIS_MODULE); + if (IS_ERR(data->rtc)) { + ret = PTR_ERR(data->rtc); + dev_err(&pdev->dev, "failed to register rtc: %d\n", ret); + return ret; + } + + return 0; +} + +static int __devexit snvs_rtc_remove(struct platform_device *pdev) +{ + struct snvs_rtc_data *data = platform_get_drvdata(pdev); + + rtc_device_unregister(data->rtc); + + return 0; +} + +#ifdef CONFIG_PM_SLEEP +static int snvs_rtc_suspend(struct device *dev) +{ + struct snvs_rtc_data *data = dev_get_drvdata(dev); + + if (device_may_wakeup(dev)) + enable_irq_wake(data->irq); + + return 0; +} + +static int snvs_rtc_resume(struct device *dev) +{ + struct snvs_rtc_data *data = dev_get_drvdata(dev); + + if (device_may_wakeup(dev)) + disable_irq_wake(data->irq); + + return 0; +} +#endif + +static SIMPLE_DEV_PM_OPS(snvs_rtc_pm_ops, snvs_rtc_suspend, snvs_rtc_resume); + +static const struct of_device_id __devinitconst snvs_dt_ids[] = { + { .compatible = "fsl,sec-v4.0-mon-rtc-lp", }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(of, snvs_dt_ids); + +static struct platform_driver snvs_rtc_driver = { + .driver = { + .name = "snvs_rtc", + .owner = THIS_MODULE, + .pm = &snvs_rtc_pm_ops, + .of_match_table = snvs_dt_ids, + }, + .probe = snvs_rtc_probe, + .remove = __devexit_p(snvs_rtc_remove), +}; +module_platform_driver(snvs_rtc_driver); + +MODULE_AUTHOR("Freescale Semiconductor, Inc."); +MODULE_DESCRIPTION("Freescale SNVS RTC Driver"); +MODULE_LICENSE("GPL"); diff --git a/drivers/rtc/rtc-spear.c b/drivers/rtc/rtc-spear.c index e2785479113..bb507d23f6c 100644 --- a/drivers/rtc/rtc-spear.c +++ b/drivers/rtc/rtc-spear.c @@ -235,7 +235,7 @@ static int spear_rtc_read_time(struct device *dev, struct rtc_time *tm) static int spear_rtc_set_time(struct device *dev, struct rtc_time *tm) { struct spear_rtc_config *config = dev_get_drvdata(dev); - unsigned int time, date, err = 0; + unsigned int time, date; if (tm2bcd(tm) < 0) return -EINVAL; @@ -247,11 +247,8 @@ static int spear_rtc_set_time(struct device *dev, struct rtc_time *tm) (tm->tm_year << YEAR_SHIFT); writel(time, config->ioaddr + TIME_REG); writel(date, config->ioaddr + DATE_REG); - err = is_write_complete(config); - if (err < 0) - return err; - return 0; + return is_write_complete(config); } /* @@ -295,7 +292,8 @@ static int spear_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alm) static int spear_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alm) { struct spear_rtc_config *config = dev_get_drvdata(dev); - unsigned int time, date, err = 0; + unsigned int time, date; + int err; if (tm2bcd(&alm->time) < 0) return -EINVAL; @@ -357,7 +355,7 @@ static int __devinit spear_rtc_probe(struct platform_device *pdev) { struct resource *res; struct spear_rtc_config *config; - unsigned int status = 0; + int status = 0; int irq; res = platform_get_resource(pdev, IORESOURCE_MEM, 0); diff --git a/drivers/rtc/rtc-sysfs.c b/drivers/rtc/rtc-sysfs.c index 380083ca572..b70e2bb6364 100644 --- a/drivers/rtc/rtc-sysfs.c +++ b/drivers/rtc/rtc-sysfs.c @@ -102,6 +102,12 @@ rtc_sysfs_set_max_user_freq(struct device *dev, struct device_attribute *attr, return n; } +/** + * rtc_sysfs_show_hctosys - indicate if the given RTC set the system time + * + * Returns 1 if the system clock was set by this RTC at the last + * boot or resume event. + */ static ssize_t rtc_sysfs_show_hctosys(struct device *dev, struct device_attribute *attr, char *buf) diff --git a/drivers/rtc/rtc-tps65910.c b/drivers/rtc/rtc-tps65910.c new file mode 100644 index 00000000000..7a82337e4de --- /dev/null +++ b/drivers/rtc/rtc-tps65910.c @@ -0,0 +1,349 @@ +/* + * rtc-tps65910.c -- TPS65910 Real Time Clock interface + * + * Copyright (c) 2012, NVIDIA CORPORATION. All rights reserved. + * Author: Venu Byravarasu <vbyravarasu@nvidia.com> + * + * Based on original TI driver rtc-twl.c + * Copyright (C) 2007 MontaVista Software, Inc + * Author: Alexandre Rusev <source@mvista.com> + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + */ + +#include <linux/kernel.h> +#include <linux/errno.h> +#include <linux/init.h> +#include <linux/module.h> +#include <linux/types.h> +#include <linux/rtc.h> +#include <linux/bcd.h> +#include <linux/platform_device.h> +#include <linux/interrupt.h> +#include <linux/mfd/tps65910.h> + +struct tps65910_rtc { + struct rtc_device *rtc; + /* To store the list of enabled interrupts */ + u32 irqstat; +}; + +/* Total number of RTC registers needed to set time*/ +#define NUM_TIME_REGS (TPS65910_YEARS - TPS65910_SECONDS + 1) + +static int tps65910_rtc_alarm_irq_enable(struct device *dev, unsigned enabled) +{ + struct tps65910 *tps = dev_get_drvdata(dev->parent); + u8 val = 0; + + if (enabled) + val = TPS65910_RTC_INTERRUPTS_IT_ALARM; + + return regmap_write(tps->regmap, TPS65910_RTC_INTERRUPTS, val); +} + +/* + * Gets current tps65910 RTC time and date parameters. + * + * The RTC's time/alarm representation is not what gmtime(3) requires + * Linux to use: + * + * - Months are 1..12 vs Linux 0-11 + * - Years are 0..99 vs Linux 1900..N (we assume 21st century) + */ +static int tps65910_rtc_read_time(struct device *dev, struct rtc_time *tm) +{ + unsigned char rtc_data[NUM_TIME_REGS]; + struct tps65910 *tps = dev_get_drvdata(dev->parent); + int ret; + + /* Copy RTC counting registers to static registers or latches */ + ret = regmap_update_bits(tps->regmap, TPS65910_RTC_CTRL, + TPS65910_RTC_CTRL_GET_TIME, TPS65910_RTC_CTRL_GET_TIME); + if (ret < 0) { + dev_err(dev, "RTC CTRL reg update failed with err:%d\n", ret); + return ret; + } + + ret = regmap_bulk_read(tps->regmap, TPS65910_SECONDS, rtc_data, + NUM_TIME_REGS); + if (ret < 0) { + dev_err(dev, "reading from RTC failed with err:%d\n", ret); + return ret; + } + + tm->tm_sec = bcd2bin(rtc_data[0]); + tm->tm_min = bcd2bin(rtc_data[1]); + tm->tm_hour = bcd2bin(rtc_data[2]); + tm->tm_mday = bcd2bin(rtc_data[3]); + tm->tm_mon = bcd2bin(rtc_data[4]) - 1; + tm->tm_year = bcd2bin(rtc_data[5]) + 100; + + return ret; +} + +static int tps65910_rtc_set_time(struct device *dev, struct rtc_time *tm) +{ + unsigned char rtc_data[NUM_TIME_REGS]; + struct tps65910 *tps = dev_get_drvdata(dev->parent); + int ret; + + rtc_data[0] = bin2bcd(tm->tm_sec); + rtc_data[1] = bin2bcd(tm->tm_min); + rtc_data[2] = bin2bcd(tm->tm_hour); + rtc_data[3] = bin2bcd(tm->tm_mday); + rtc_data[4] = bin2bcd(tm->tm_mon + 1); + rtc_data[5] = bin2bcd(tm->tm_year - 100); + + /* Stop RTC while updating the RTC time registers */ + ret = regmap_update_bits(tps->regmap, TPS65910_RTC_CTRL, + TPS65910_RTC_CTRL_STOP_RTC, 0); + if (ret < 0) { + dev_err(dev, "RTC stop failed with err:%d\n", ret); + return ret; + } + + /* update all the time registers in one shot */ + ret = regmap_bulk_write(tps->regmap, TPS65910_SECONDS, rtc_data, + NUM_TIME_REGS); + if (ret < 0) { + dev_err(dev, "rtc_set_time error %d\n", ret); + return ret; + } + + /* Start back RTC */ + ret = regmap_update_bits(tps->regmap, TPS65910_RTC_CTRL, + TPS65910_RTC_CTRL_STOP_RTC, 1); + if (ret < 0) + dev_err(dev, "RTC start failed with err:%d\n", ret); + + return ret; +} + +/* + * Gets current tps65910 RTC alarm time. + */ +static int tps65910_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alm) +{ + unsigned char alarm_data[NUM_TIME_REGS]; + u32 int_val; + struct tps65910 *tps = dev_get_drvdata(dev->parent); + int ret; + + ret = regmap_bulk_read(tps->regmap, TPS65910_SECONDS, alarm_data, + NUM_TIME_REGS); + if (ret < 0) { + dev_err(dev, "rtc_read_alarm error %d\n", ret); + return ret; + } + + alm->time.tm_sec = bcd2bin(alarm_data[0]); + alm->time.tm_min = bcd2bin(alarm_data[1]); + alm->time.tm_hour = bcd2bin(alarm_data[2]); + alm->time.tm_mday = bcd2bin(alarm_data[3]); + alm->time.tm_mon = bcd2bin(alarm_data[4]) - 1; + alm->time.tm_year = bcd2bin(alarm_data[5]) + 100; + + ret = regmap_read(tps->regmap, TPS65910_RTC_INTERRUPTS, &int_val); + if (ret < 0) + return ret; + + if (int_val & TPS65910_RTC_INTERRUPTS_IT_ALARM) + alm->enabled = 1; + + return ret; +} + +static int tps65910_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alm) +{ + unsigned char alarm_data[NUM_TIME_REGS]; + struct tps65910 *tps = dev_get_drvdata(dev->parent); + int ret; + + ret = tps65910_rtc_alarm_irq_enable(dev, 0); + if (ret) + return ret; + + alarm_data[0] = bin2bcd(alm->time.tm_sec); + alarm_data[1] = bin2bcd(alm->time.tm_min); + alarm_data[2] = bin2bcd(alm->time.tm_hour); + alarm_data[3] = bin2bcd(alm->time.tm_mday); + alarm_data[4] = bin2bcd(alm->time.tm_mon + 1); + alarm_data[5] = bin2bcd(alm->time.tm_year - 100); + + /* update all the alarm registers in one shot */ + ret = regmap_bulk_write(tps->regmap, TPS65910_ALARM_SECONDS, + alarm_data, NUM_TIME_REGS); + if (ret) { + dev_err(dev, "rtc_set_alarm error %d\n", ret); + return ret; + } + + if (alm->enabled) + ret = tps65910_rtc_alarm_irq_enable(dev, 1); + + return ret; +} + +static irqreturn_t tps65910_rtc_interrupt(int irq, void *rtc) +{ + struct device *dev = rtc; + unsigned long events = 0; + struct tps65910 *tps = dev_get_drvdata(dev->parent); + struct tps65910_rtc *tps_rtc = dev_get_drvdata(dev); + int ret; + u32 rtc_reg; + + ret = regmap_read(tps->regmap, TPS65910_RTC_STATUS, &rtc_reg); + if (ret) + return IRQ_NONE; + + if (rtc_reg & TPS65910_RTC_STATUS_ALARM) + events = RTC_IRQF | RTC_AF; + + ret = regmap_write(tps->regmap, TPS65910_RTC_STATUS, rtc_reg); + if (ret) + return IRQ_NONE; + + /* Notify RTC core on event */ + rtc_update_irq(tps_rtc->rtc, 1, events); + + return IRQ_HANDLED; +} + +static const struct rtc_class_ops tps65910_rtc_ops = { + .read_time = tps65910_rtc_read_time, + .set_time = tps65910_rtc_set_time, + .read_alarm = tps65910_rtc_read_alarm, + .set_alarm = tps65910_rtc_set_alarm, + .alarm_irq_enable = tps65910_rtc_alarm_irq_enable, +}; + +static int __devinit tps65910_rtc_probe(struct platform_device *pdev) +{ + struct tps65910 *tps65910 = NULL; + struct tps65910_rtc *tps_rtc = NULL; + int ret; + int irq; + u32 rtc_reg; + + tps65910 = dev_get_drvdata(pdev->dev.parent); + + tps_rtc = devm_kzalloc(&pdev->dev, sizeof(struct tps65910_rtc), + GFP_KERNEL); + if (!tps_rtc) + return -ENOMEM; + + /* Clear pending interrupts */ + ret = regmap_read(tps65910->regmap, TPS65910_RTC_STATUS, &rtc_reg); + if (ret < 0) + return ret; + + ret = regmap_write(tps65910->regmap, TPS65910_RTC_STATUS, rtc_reg); + if (ret < 0) + return ret; + + dev_dbg(&pdev->dev, "Enabling rtc-tps65910.\n"); + rtc_reg = TPS65910_RTC_CTRL_STOP_RTC; + ret = regmap_write(tps65910->regmap, TPS65910_RTC_CTRL, rtc_reg); + if (ret < 0) + return ret; + + irq = platform_get_irq(pdev, 0); + if (irq <= 0) { + dev_warn(&pdev->dev, "Wake up is not possible as irq = %d\n", + irq); + return ret; + } + + ret = devm_request_threaded_irq(&pdev->dev, irq, NULL, + tps65910_rtc_interrupt, IRQF_TRIGGER_LOW, + "rtc-tps65910", &pdev->dev); + if (ret < 0) { + dev_err(&pdev->dev, "IRQ is not free.\n"); + return ret; + } + device_init_wakeup(&pdev->dev, 1); + + tps_rtc->rtc = rtc_device_register(pdev->name, &pdev->dev, + &tps65910_rtc_ops, THIS_MODULE); + if (IS_ERR(tps_rtc->rtc)) { + ret = PTR_ERR(tps_rtc->rtc); + dev_err(&pdev->dev, "RTC device register: err %d\n", ret); + return ret; + } + + platform_set_drvdata(pdev, tps_rtc); + + return 0; +} + +/* + * Disable tps65910 RTC interrupts. + * Sets status flag to free. + */ +static int __devexit tps65910_rtc_remove(struct platform_device *pdev) +{ + /* leave rtc running, but disable irqs */ + struct rtc_device *rtc = platform_get_drvdata(pdev); + + tps65910_rtc_alarm_irq_enable(&rtc->dev, 0); + + rtc_device_unregister(rtc); + return 0; +} + +#ifdef CONFIG_PM_SLEEP + +static int tps65910_rtc_suspend(struct device *dev) +{ + struct tps65910 *tps = dev_get_drvdata(dev->parent); + u8 alarm = TPS65910_RTC_INTERRUPTS_IT_ALARM; + int ret; + + /* Store current list of enabled interrupts*/ + ret = regmap_read(tps->regmap, TPS65910_RTC_INTERRUPTS, + &tps->rtc->irqstat); + if (ret < 0) + return ret; + + /* Enable RTC ALARM interrupt only */ + return regmap_write(tps->regmap, TPS65910_RTC_INTERRUPTS, alarm); +} + +static int tps65910_rtc_resume(struct device *dev) +{ + struct tps65910 *tps = dev_get_drvdata(dev->parent); + + /* Restore list of enabled interrupts before suspend */ + return regmap_write(tps->regmap, TPS65910_RTC_INTERRUPTS, + tps->rtc->irqstat); +} + +static const struct dev_pm_ops tps65910_rtc_pm_ops = { + .suspend = tps65910_rtc_suspend, + .resume = tps65910_rtc_resume, +}; + +#define DEV_PM_OPS (&tps65910_rtc_pm_ops) +#else +#define DEV_PM_OPS NULL +#endif + +static struct platform_driver tps65910_rtc_driver = { + .probe = tps65910_rtc_probe, + .remove = __devexit_p(tps65910_rtc_remove), + .driver = { + .owner = THIS_MODULE, + .name = "tps65910-rtc", + .pm = DEV_PM_OPS, + }, +}; + +module_platform_driver(tps65910_rtc_driver); +MODULE_ALIAS("platform:rtc-tps65910"); +MODULE_AUTHOR("Venu Byravarasu <vbyravarasu@nvidia.com>"); +MODULE_LICENSE("GPL"); diff --git a/drivers/rtc/rtc-x1205.c b/drivers/rtc/rtc-x1205.c index 403b3d41d10..f36e59c6bc0 100644 --- a/drivers/rtc/rtc-x1205.c +++ b/drivers/rtc/rtc-x1205.c @@ -97,8 +97,17 @@ static int x1205_get_datetime(struct i2c_client *client, struct rtc_time *tm, int i; struct i2c_msg msgs[] = { - { client->addr, 0, 2, dt_addr }, /* setup read ptr */ - { client->addr, I2C_M_RD, 8, buf }, /* read date */ + {/* setup read ptr */ + .addr = client->addr, + .len = 2, + .buf = dt_addr + }, + {/* read date */ + .addr = client->addr, + .flags = I2C_M_RD, + .len = 8, + .buf = buf + }, }; /* read date registers */ @@ -142,8 +151,17 @@ static int x1205_get_status(struct i2c_client *client, unsigned char *sr) static unsigned char sr_addr[2] = { 0, X1205_REG_SR }; struct i2c_msg msgs[] = { - { client->addr, 0, 2, sr_addr }, /* setup read ptr */ - { client->addr, I2C_M_RD, 1, sr }, /* read status */ + { /* setup read ptr */ + .addr = client->addr, + .len = 2, + .buf = sr_addr + }, + { /* read status */ + .addr = client->addr, + .flags = I2C_M_RD, + .len = 1, + .buf = sr + }, }; /* read status register */ @@ -279,8 +297,17 @@ static int x1205_get_dtrim(struct i2c_client *client, int *trim) static unsigned char dtr_addr[2] = { 0, X1205_REG_DTR }; struct i2c_msg msgs[] = { - { client->addr, 0, 2, dtr_addr }, /* setup read ptr */ - { client->addr, I2C_M_RD, 1, &dtr }, /* read dtr */ + { /* setup read ptr */ + .addr = client->addr, + .len = 2, + .buf = dtr_addr + }, + { /* read dtr */ + .addr = client->addr, + .flags = I2C_M_RD, + .len = 1, + .buf = &dtr + }, }; /* read dtr register */ @@ -311,8 +338,17 @@ static int x1205_get_atrim(struct i2c_client *client, int *trim) static unsigned char atr_addr[2] = { 0, X1205_REG_ATR }; struct i2c_msg msgs[] = { - { client->addr, 0, 2, atr_addr }, /* setup read ptr */ - { client->addr, I2C_M_RD, 1, &atr }, /* read atr */ + {/* setup read ptr */ + .addr = client->addr, + .len = 2, + .buf = atr_addr + }, + {/* read atr */ + .addr = client->addr, + .flags = I2C_M_RD, + .len = 1, + .buf = &atr + }, }; /* read atr register */ @@ -381,8 +417,17 @@ static int x1205_validate_client(struct i2c_client *client) unsigned char addr[2] = { 0, probe_zero_pattern[i] }; struct i2c_msg msgs[2] = { - { client->addr, 0, 2, addr }, - { client->addr, I2C_M_RD, 1, &buf }, + { + .addr = client->addr, + .len = 2, + .buf = addr + }, + { + .addr = client->addr, + .flags = I2C_M_RD, + .len = 1, + .buf = &buf + }, }; if ((xfer = i2c_transfer(client->adapter, msgs, 2)) != 2) { @@ -409,8 +454,17 @@ static int x1205_validate_client(struct i2c_client *client) unsigned char addr[2] = { 0, probe_limits_pattern[i].reg }; struct i2c_msg msgs[2] = { - { client->addr, 0, 2, addr }, - { client->addr, I2C_M_RD, 1, ® }, + { + .addr = client->addr, + .len = 2, + .buf = addr + }, + { + .addr = client->addr, + .flags = I2C_M_RD, + .len = 1, + .buf = ® + }, }; if ((xfer = i2c_transfer(client->adapter, msgs, 2)) != 2) { @@ -444,8 +498,18 @@ static int x1205_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm) static unsigned char int_addr[2] = { 0, X1205_REG_INT }; struct i2c_client *client = to_i2c_client(dev); struct i2c_msg msgs[] = { - { client->addr, 0, 2, int_addr }, /* setup read ptr */ - { client->addr, I2C_M_RD, 1, &intreg }, /* read INT register */ + { /* setup read ptr */ + .addr = client->addr, + .len = 2, + .buf = int_addr + }, + {/* read INT register */ + + .addr = client->addr, + .flags = I2C_M_RD, + .len = 1, + .buf = &intreg + }, }; /* read interrupt register and status register */ diff --git a/drivers/scsi/aacraid/linit.c b/drivers/scsi/aacraid/linit.c index 7199534cd07..cb7f1582a6d 100644 --- a/drivers/scsi/aacraid/linit.c +++ b/drivers/scsi/aacraid/linit.c @@ -93,7 +93,7 @@ static DECLARE_PCI_DEVICE_TABLE(aac_pci_tbl) = { #elif defined(__devinitconst) static const struct pci_device_id aac_pci_tbl[] __devinitconst = { #else -static const struct pci_device_id aac_pci_tbl[] __devinitdata = { +static const struct pci_device_id aac_pci_tbl[] __devinitconst = { #endif { 0x1028, 0x0001, 0x1028, 0x0001, 0, 0, 0 }, /* PERC 2/Si (Iguana/PERC2Si) */ { 0x1028, 0x0002, 0x1028, 0x0002, 0, 0, 1 }, /* PERC 3/Di (Opal/PERC3Di) */ diff --git a/drivers/scsi/aic94xx/aic94xx_init.c b/drivers/scsi/aic94xx/aic94xx_init.c index ff80552ead8..1c4120c3db4 100644 --- a/drivers/scsi/aic94xx/aic94xx_init.c +++ b/drivers/scsi/aic94xx/aic94xx_init.c @@ -1012,7 +1012,7 @@ static struct sas_domain_function_template aic94xx_transport_functions = { .lldd_ata_set_dmamode = asd_set_dmamode, }; -static const struct pci_device_id aic94xx_pci_table[] __devinitdata = { +static const struct pci_device_id aic94xx_pci_table[] __devinitconst = { {PCI_DEVICE(PCI_VENDOR_ID_ADAPTEC2, 0x410),0, 0, 1}, {PCI_DEVICE(PCI_VENDOR_ID_ADAPTEC2, 0x412),0, 0, 1}, {PCI_DEVICE(PCI_VENDOR_ID_ADAPTEC2, 0x416),0, 0, 1}, diff --git a/drivers/scsi/atp870u.c b/drivers/scsi/atp870u.c index 68ce08552f6..a540162ac59 100644 --- a/drivers/scsi/atp870u.c +++ b/drivers/scsi/atp870u.c @@ -1173,7 +1173,16 @@ wait_io1: outw(val, tmport); outb(2, 0x80); TCM_SYNC: - udelay(0x800); + /* + * The funny division into multiple delays is to accomodate + * arches like ARM where udelay() multiplies its argument by + * a large number to initialize a loop counter. To avoid + * overflow, the maximum supported udelay is 2000 microseconds. + * + * XXX it would be more polite to find a way to use msleep() + */ + mdelay(2); + udelay(48); if ((inb(tmport) & 0x80) == 0x00) { /* bsy ? */ outw(0, tmport--); outb(0, tmport); diff --git a/drivers/thermal/thermal_sys.c b/drivers/thermal/thermal_sys.c index 67789b8345d..efd81bb25e0 100644 --- a/drivers/thermal/thermal_sys.c +++ b/drivers/thermal/thermal_sys.c @@ -78,7 +78,7 @@ again: else if (unlikely(err)) return err; - *id = *id & MAX_ID_MASK; + *id = *id & MAX_IDR_MASK; return 0; } diff --git a/drivers/video/aty/aty128fb.c b/drivers/video/aty/aty128fb.c index 747442d2c0f..0fefa84ed9a 100644 --- a/drivers/video/aty/aty128fb.c +++ b/drivers/video/aty/aty128fb.c @@ -149,7 +149,7 @@ enum { }; /* Must match above enum */ -static const char *r128_family[] __devinitdata = { +static char * const r128_family[] __devinitconst = { "AGP", "PCI", "PRO AGP", diff --git a/drivers/video/backlight/Kconfig b/drivers/video/backlight/Kconfig index 63cee2e9d62..c101697a4ba 100644 --- a/drivers/video/backlight/Kconfig +++ b/drivers/video/backlight/Kconfig @@ -229,13 +229,6 @@ config BACKLIGHT_HP700 If you have an HP Jornada 700 series, say Y to include backlight control driver. -config BACKLIGHT_PROGEAR - tristate "Frontpath ProGear Backlight Driver" - depends on PCI && X86 - help - If you have a Frontpath ProGear say Y to enable the - backlight driver. - config BACKLIGHT_CARILLO_RANCH tristate "Intel Carillo Ranch Backlight Driver" depends on LCD_CLASS_DEVICE && PCI && X86 && FB_LE80578 @@ -352,6 +345,22 @@ config BACKLIGHT_AAT2870 If you have a AnalogicTech AAT2870 say Y to enable the backlight driver. +config BACKLIGHT_LM3630 + tristate "Backlight Driver for LM3630" + depends on BACKLIGHT_CLASS_DEVICE && I2C + select REGMAP_I2C + help + This supports TI LM3630 Backlight Driver + +config BACKLIGHT_LM3639 + tristate "Backlight Driver for LM3639" + depends on BACKLIGHT_CLASS_DEVICE && I2C + select REGMAP_I2C + select NEW_LEDS + select LEDS_CLASS + help + This supports TI LM3639 Backlight + 1.5A Flash LED Driver + config BACKLIGHT_LP855X tristate "Backlight driver for TI LP855X" depends on BACKLIGHT_CLASS_DEVICE && I2C diff --git a/drivers/video/backlight/Makefile b/drivers/video/backlight/Makefile index 00223a62ec1..e7ce7291635 100644 --- a/drivers/video/backlight/Makefile +++ b/drivers/video/backlight/Makefile @@ -23,10 +23,11 @@ obj-$(CONFIG_BACKLIGHT_HP700) += jornada720_bl.o obj-$(CONFIG_BACKLIGHT_HP680) += hp680_bl.o obj-$(CONFIG_BACKLIGHT_LM3533) += lm3533_bl.o obj-$(CONFIG_BACKLIGHT_LOCOMO) += locomolcd.o +obj-$(CONFIG_BACKLIGHT_LM3630) += lm3630_bl.o +obj-$(CONFIG_BACKLIGHT_LM3639) += lm3639_bl.o obj-$(CONFIG_BACKLIGHT_LP855X) += lp855x_bl.o obj-$(CONFIG_BACKLIGHT_OMAP1) += omap1_bl.o obj-$(CONFIG_BACKLIGHT_PANDORA) += pandora_bl.o -obj-$(CONFIG_BACKLIGHT_PROGEAR) += progear_bl.o obj-$(CONFIG_BACKLIGHT_CARILLO_RANCH) += cr_bllcd.o obj-$(CONFIG_BACKLIGHT_PWM) += pwm_bl.o obj-$(CONFIG_BACKLIGHT_DA903X) += da903x_bl.o diff --git a/drivers/video/backlight/da9052_bl.c b/drivers/video/backlight/da9052_bl.c index b628d68f516..ac196181fe4 100644 --- a/drivers/video/backlight/da9052_bl.c +++ b/drivers/video/backlight/da9052_bl.c @@ -72,7 +72,7 @@ static int da9052_adjust_wled_brightness(struct da9052_bl *wleds) if (ret < 0) return ret; - msleep(10); + usleep_range(10000, 11000); if (wleds->brightness) { ret = da9052_reg_write(wleds->da9052, wled_bank[wleds->led_reg], @@ -129,7 +129,6 @@ static int da9052_backlight_probe(struct platform_device *pdev) &da9052_backlight_ops, &props); if (IS_ERR(bl)) { dev_err(&pdev->dev, "Failed to register backlight\n"); - devm_kfree(&pdev->dev, wleds); return PTR_ERR(bl); } @@ -149,7 +148,6 @@ static int da9052_backlight_remove(struct platform_device *pdev) wleds->state = DA9052_WLEDS_OFF; da9052_adjust_wled_brightness(wleds); backlight_device_unregister(bl); - devm_kfree(&pdev->dev, wleds); return 0; } diff --git a/drivers/video/backlight/kb3886_bl.c b/drivers/video/backlight/kb3886_bl.c index 72dd5556a35..6c5ed6b242c 100644 --- a/drivers/video/backlight/kb3886_bl.c +++ b/drivers/video/backlight/kb3886_bl.c @@ -34,9 +34,9 @@ static void kb3886_bl_set_intensity(int intensity) mutex_lock(&bl_mutex); intensity = intensity&0xff; outb(KB3886_ADC_DAC_PWM, KB3886_PARENT); - msleep(10); + usleep_range(10000, 11000); outb(KB3886_PWM0_WRITE, KB3886_IO); - msleep(10); + usleep_range(10000, 11000); outb(intensity, KB3886_IO); mutex_unlock(&bl_mutex); } diff --git a/drivers/video/backlight/lm3630_bl.c b/drivers/video/backlight/lm3630_bl.c new file mode 100644 index 00000000000..dc191441796 --- /dev/null +++ b/drivers/video/backlight/lm3630_bl.c @@ -0,0 +1,475 @@ +/* +* Simple driver for Texas Instruments LM3630 Backlight driver chip +* Copyright (C) 2012 Texas Instruments +* +* This program is free software; you can redistribute it and/or modify +* it under the terms of the GNU General Public License version 2 as +* published by the Free Software Foundation. +* +*/ +#include <linux/module.h> +#include <linux/slab.h> +#include <linux/i2c.h> +#include <linux/backlight.h> +#include <linux/err.h> +#include <linux/delay.h> +#include <linux/uaccess.h> +#include <linux/interrupt.h> +#include <linux/regmap.h> +#include <linux/platform_data/lm3630_bl.h> + +#define REG_CTRL 0x00 +#define REG_CONFIG 0x01 +#define REG_BRT_A 0x03 +#define REG_BRT_B 0x04 +#define REG_INT_STATUS 0x09 +#define REG_INT_EN 0x0A +#define REG_FAULT 0x0B +#define REG_PWM_OUTLOW 0x12 +#define REG_PWM_OUTHIGH 0x13 +#define REG_MAX 0x1F + +#define INT_DEBOUNCE_MSEC 10 + +enum lm3630_leds { + BLED_ALL = 0, + BLED_1, + BLED_2 +}; + +static const char *bled_name[] = { + [BLED_ALL] = "lm3630_bled", /*Bank1 controls all string */ + [BLED_1] = "lm3630_bled1", /*Bank1 controls bled1 */ + [BLED_2] = "lm3630_bled2", /*Bank1 or 2 controls bled2 */ +}; + +struct lm3630_chip_data { + struct device *dev; + struct delayed_work work; + int irq; + struct workqueue_struct *irqthread; + struct lm3630_platform_data *pdata; + struct backlight_device *bled1; + struct backlight_device *bled2; + struct regmap *regmap; +}; + +/* initialize chip */ +static int __devinit lm3630_chip_init(struct lm3630_chip_data *pchip) +{ + int ret; + unsigned int reg_val; + struct lm3630_platform_data *pdata = pchip->pdata; + + /*pwm control */ + reg_val = ((pdata->pwm_active & 0x01) << 2) | (pdata->pwm_ctrl & 0x03); + ret = regmap_update_bits(pchip->regmap, REG_CONFIG, 0x07, reg_val); + if (ret < 0) + goto out; + + /* bank control */ + reg_val = ((pdata->bank_b_ctrl & 0x01) << 1) | + (pdata->bank_a_ctrl & 0x07); + ret = regmap_update_bits(pchip->regmap, REG_CTRL, 0x07, reg_val); + if (ret < 0) + goto out; + + ret = regmap_update_bits(pchip->regmap, REG_CTRL, 0x80, 0x00); + if (ret < 0) + goto out; + + /* set initial brightness */ + if (pdata->bank_a_ctrl != BANK_A_CTRL_DISABLE) { + ret = regmap_write(pchip->regmap, + REG_BRT_A, pdata->init_brt_led1); + if (ret < 0) + goto out; + } + + if (pdata->bank_b_ctrl != BANK_B_CTRL_DISABLE) { + ret = regmap_write(pchip->regmap, + REG_BRT_B, pdata->init_brt_led2); + if (ret < 0) + goto out; + } + return ret; + +out: + dev_err(pchip->dev, "i2c failed to access register\n"); + return ret; +} + +/* interrupt handling */ +static void lm3630_delayed_func(struct work_struct *work) +{ + int ret; + unsigned int reg_val; + struct lm3630_chip_data *pchip; + + pchip = container_of(work, struct lm3630_chip_data, work.work); + + ret = regmap_read(pchip->regmap, REG_INT_STATUS, ®_val); + if (ret < 0) { + dev_err(pchip->dev, + "i2c failed to access REG_INT_STATUS Register\n"); + return; + } + + dev_info(pchip->dev, "REG_INT_STATUS Register is 0x%x\n", reg_val); +} + +static irqreturn_t lm3630_isr_func(int irq, void *chip) +{ + int ret; + struct lm3630_chip_data *pchip = chip; + unsigned long delay = msecs_to_jiffies(INT_DEBOUNCE_MSEC); + + queue_delayed_work(pchip->irqthread, &pchip->work, delay); + + ret = regmap_update_bits(pchip->regmap, REG_CTRL, 0x80, 0x00); + if (ret < 0) + goto out; + + return IRQ_HANDLED; +out: + dev_err(pchip->dev, "i2c failed to access register\n"); + return IRQ_HANDLED; +} + +static int lm3630_intr_config(struct lm3630_chip_data *pchip) +{ + INIT_DELAYED_WORK(&pchip->work, lm3630_delayed_func); + pchip->irqthread = create_singlethread_workqueue("lm3630-irqthd"); + if (!pchip->irqthread) { + dev_err(pchip->dev, "create irq thread fail...\n"); + return -1; + } + if (request_threaded_irq + (pchip->irq, NULL, lm3630_isr_func, + IRQF_TRIGGER_FALLING | IRQF_ONESHOT, "lm3630_irq", pchip)) { + dev_err(pchip->dev, "request threaded irq fail..\n"); + return -1; + } + return 0; +} + +static bool +set_intensity(struct backlight_device *bl, struct lm3630_chip_data *pchip) +{ + if (!pchip->pdata->pwm_set_intensity) + return false; + pchip->pdata->pwm_set_intensity(bl->props.brightness - 1, + pchip->pdata->pwm_period); + return true; +} + +/* update and get brightness */ +static int lm3630_bank_a_update_status(struct backlight_device *bl) +{ + int ret; + struct lm3630_chip_data *pchip = bl_get_data(bl); + enum lm3630_pwm_ctrl pwm_ctrl = pchip->pdata->pwm_ctrl; + + /* brightness 0 means disable */ + if (!bl->props.brightness) { + ret = regmap_update_bits(pchip->regmap, REG_CTRL, 0x04, 0x00); + if (ret < 0) + goto out; + return bl->props.brightness; + } + + /* pwm control */ + if (pwm_ctrl == PWM_CTRL_BANK_A || pwm_ctrl == PWM_CTRL_BANK_ALL) { + if (!set_intensity(bl, pchip)) + dev_err(pchip->dev, "No pwm control func. in plat-data\n"); + } else { + + /* i2c control */ + ret = regmap_update_bits(pchip->regmap, REG_CTRL, 0x80, 0x00); + if (ret < 0) + goto out; + mdelay(1); + ret = regmap_write(pchip->regmap, + REG_BRT_A, bl->props.brightness - 1); + if (ret < 0) + goto out; + } + return bl->props.brightness; +out: + dev_err(pchip->dev, "i2c failed to access REG_CTRL\n"); + return bl->props.brightness; +} + +static int lm3630_bank_a_get_brightness(struct backlight_device *bl) +{ + unsigned int reg_val; + int brightness, ret; + struct lm3630_chip_data *pchip = bl_get_data(bl); + enum lm3630_pwm_ctrl pwm_ctrl = pchip->pdata->pwm_ctrl; + + if (pwm_ctrl == PWM_CTRL_BANK_A || pwm_ctrl == PWM_CTRL_BANK_ALL) { + ret = regmap_read(pchip->regmap, REG_PWM_OUTHIGH, ®_val); + if (ret < 0) + goto out; + brightness = reg_val & 0x01; + ret = regmap_read(pchip->regmap, REG_PWM_OUTLOW, ®_val); + if (ret < 0) + goto out; + brightness = ((brightness << 8) | reg_val) + 1; + } else { + ret = regmap_update_bits(pchip->regmap, REG_CTRL, 0x80, 0x00); + if (ret < 0) + goto out; + mdelay(1); + ret = regmap_read(pchip->regmap, REG_BRT_A, ®_val); + if (ret < 0) + goto out; + brightness = reg_val + 1; + } + bl->props.brightness = brightness; + return bl->props.brightness; +out: + dev_err(pchip->dev, "i2c failed to access register\n"); + return 0; +} + +static const struct backlight_ops lm3630_bank_a_ops = { + .options = BL_CORE_SUSPENDRESUME, + .update_status = lm3630_bank_a_update_status, + .get_brightness = lm3630_bank_a_get_brightness, +}; + +static int lm3630_bank_b_update_status(struct backlight_device *bl) +{ + int ret; + struct lm3630_chip_data *pchip = bl_get_data(bl); + enum lm3630_pwm_ctrl pwm_ctrl = pchip->pdata->pwm_ctrl; + + if (pwm_ctrl == PWM_CTRL_BANK_B || pwm_ctrl == PWM_CTRL_BANK_ALL) { + if (!set_intensity(bl, pchip)) + dev_err(pchip->dev, + "no pwm control func. in plat-data\n"); + } else { + ret = regmap_update_bits(pchip->regmap, REG_CTRL, 0x80, 0x00); + if (ret < 0) + goto out; + mdelay(1); + ret = regmap_write(pchip->regmap, + REG_BRT_B, bl->props.brightness - 1); + } + return bl->props.brightness; +out: + dev_err(pchip->dev, "i2c failed to access register\n"); + return bl->props.brightness; +} + +static int lm3630_bank_b_get_brightness(struct backlight_device *bl) +{ + unsigned int reg_val; + int brightness, ret; + struct lm3630_chip_data *pchip = bl_get_data(bl); + enum lm3630_pwm_ctrl pwm_ctrl = pchip->pdata->pwm_ctrl; + + if (pwm_ctrl == PWM_CTRL_BANK_B || pwm_ctrl == PWM_CTRL_BANK_ALL) { + ret = regmap_read(pchip->regmap, REG_PWM_OUTHIGH, ®_val); + if (ret < 0) + goto out; + brightness = reg_val & 0x01; + ret = regmap_read(pchip->regmap, REG_PWM_OUTLOW, ®_val); + if (ret < 0) + goto out; + brightness = ((brightness << 8) | reg_val) + 1; + } else { + ret = regmap_update_bits(pchip->regmap, REG_CTRL, 0x80, 0x00); + if (ret < 0) + goto out; + mdelay(1); + ret = regmap_read(pchip->regmap, REG_BRT_B, ®_val); + if (ret < 0) + goto out; + brightness = reg_val + 1; + } + bl->props.brightness = brightness; + + return bl->props.brightness; +out: + dev_err(pchip->dev, "i2c failed to access register\n"); + return bl->props.brightness; +} + +static const struct backlight_ops lm3630_bank_b_ops = { + .options = BL_CORE_SUSPENDRESUME, + .update_status = lm3630_bank_b_update_status, + .get_brightness = lm3630_bank_b_get_brightness, +}; + +static int lm3630_backlight_register(struct lm3630_chip_data *pchip, + enum lm3630_leds ledno) +{ + const char *name = bled_name[ledno]; + struct backlight_properties props; + struct lm3630_platform_data *pdata = pchip->pdata; + + props.type = BACKLIGHT_RAW; + switch (ledno) { + case BLED_1: + case BLED_ALL: + props.brightness = pdata->init_brt_led1; + props.max_brightness = pdata->max_brt_led1; + pchip->bled1 = + backlight_device_register(name, pchip->dev, pchip, + &lm3630_bank_a_ops, &props); + if (IS_ERR(pchip->bled1)) + return -EIO; + break; + case BLED_2: + props.brightness = pdata->init_brt_led2; + props.max_brightness = pdata->max_brt_led2; + pchip->bled2 = + backlight_device_register(name, pchip->dev, pchip, + &lm3630_bank_b_ops, &props); + if (IS_ERR(pchip->bled2)) + return -EIO; + break; + } + return 0; +} + +static void lm3630_backlight_unregister(struct lm3630_chip_data *pchip) +{ + if (pchip->bled1) + backlight_device_unregister(pchip->bled1); + if (pchip->bled2) + backlight_device_unregister(pchip->bled2); +} + +static const struct regmap_config lm3630_regmap = { + .reg_bits = 8, + .val_bits = 8, + .max_register = REG_MAX, +}; + +static int __devinit lm3630_probe(struct i2c_client *client, + const struct i2c_device_id *id) +{ + struct lm3630_platform_data *pdata = client->dev.platform_data; + struct lm3630_chip_data *pchip; + int ret; + + if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) { + dev_err(&client->dev, "fail : i2c functionality check...\n"); + return -EOPNOTSUPP; + } + + if (pdata == NULL) { + dev_err(&client->dev, "fail : no platform data.\n"); + return -ENODATA; + } + + pchip = devm_kzalloc(&client->dev, sizeof(struct lm3630_chip_data), + GFP_KERNEL); + if (!pchip) + return -ENOMEM; + pchip->pdata = pdata; + pchip->dev = &client->dev; + + pchip->regmap = devm_regmap_init_i2c(client, &lm3630_regmap); + if (IS_ERR(pchip->regmap)) { + ret = PTR_ERR(pchip->regmap); + dev_err(&client->dev, "fail : allocate register map: %d\n", + ret); + return ret; + } + i2c_set_clientdata(client, pchip); + + /* chip initialize */ + ret = lm3630_chip_init(pchip); + if (ret < 0) { + dev_err(&client->dev, "fail : init chip\n"); + goto err_chip_init; + } + + switch (pdata->bank_a_ctrl) { + case BANK_A_CTRL_ALL: + ret = lm3630_backlight_register(pchip, BLED_ALL); + pdata->bank_b_ctrl = BANK_B_CTRL_DISABLE; + break; + case BANK_A_CTRL_LED1: + ret = lm3630_backlight_register(pchip, BLED_1); + break; + case BANK_A_CTRL_LED2: + ret = lm3630_backlight_register(pchip, BLED_2); + pdata->bank_b_ctrl = BANK_B_CTRL_DISABLE; + break; + default: + break; + } + + if (ret < 0) + goto err_bl_reg; + + if (pdata->bank_b_ctrl && pchip->bled2 == NULL) { + ret = lm3630_backlight_register(pchip, BLED_2); + if (ret < 0) + goto err_bl_reg; + } + + /* interrupt enable : irq 0 is not allowed for lm3630 */ + pchip->irq = client->irq; + if (pchip->irq) + lm3630_intr_config(pchip); + + dev_info(&client->dev, "LM3630 backlight register OK.\n"); + return 0; + +err_bl_reg: + dev_err(&client->dev, "fail : backlight register.\n"); + lm3630_backlight_unregister(pchip); +err_chip_init: + return ret; +} + +static int __devexit lm3630_remove(struct i2c_client *client) +{ + int ret; + struct lm3630_chip_data *pchip = i2c_get_clientdata(client); + + ret = regmap_write(pchip->regmap, REG_BRT_A, 0); + if (ret < 0) + dev_err(pchip->dev, "i2c failed to access register\n"); + + ret = regmap_write(pchip->regmap, REG_BRT_B, 0); + if (ret < 0) + dev_err(pchip->dev, "i2c failed to access register\n"); + + lm3630_backlight_unregister(pchip); + if (pchip->irq) { + free_irq(pchip->irq, pchip); + flush_workqueue(pchip->irqthread); + destroy_workqueue(pchip->irqthread); + } + return 0; +} + +static const struct i2c_device_id lm3630_id[] = { + {LM3630_NAME, 0}, + {} +}; + +MODULE_DEVICE_TABLE(i2c, lm3630_id); + +static struct i2c_driver lm3630_i2c_driver = { + .driver = { + .name = LM3630_NAME, + }, + .probe = lm3630_probe, + .remove = __devexit_p(lm3630_remove), + .id_table = lm3630_id, +}; + +module_i2c_driver(lm3630_i2c_driver); + +MODULE_DESCRIPTION("Texas Instruments Backlight driver for LM3630"); +MODULE_AUTHOR("G.Shark Jeong <gshark.jeong@gmail.com>"); +MODULE_AUTHOR("Daniel Jeong <daniel.jeong@ti.com>"); +MODULE_LICENSE("GPL v2"); diff --git a/drivers/video/backlight/lm3639_bl.c b/drivers/video/backlight/lm3639_bl.c new file mode 100644 index 00000000000..c6915c6c3cd --- /dev/null +++ b/drivers/video/backlight/lm3639_bl.c @@ -0,0 +1,437 @@ +/* +* Simple driver for Texas Instruments LM3639 Backlight + Flash LED driver chip +* Copyright (C) 2012 Texas Instruments +* +* This program is free software; you can redistribute it and/or modify +* it under the terms of the GNU General Public License version 2 as +* published by the Free Software Foundation. +* +*/ +#include <linux/module.h> +#include <linux/slab.h> +#include <linux/i2c.h> +#include <linux/leds.h> +#include <linux/backlight.h> +#include <linux/err.h> +#include <linux/delay.h> +#include <linux/uaccess.h> +#include <linux/interrupt.h> +#include <linux/regmap.h> +#include <linux/platform_data/lm3639_bl.h> + +#define REG_DEV_ID 0x00 +#define REG_CHECKSUM 0x01 +#define REG_BL_CONF_1 0x02 +#define REG_BL_CONF_2 0x03 +#define REG_BL_CONF_3 0x04 +#define REG_BL_CONF_4 0x05 +#define REG_FL_CONF_1 0x06 +#define REG_FL_CONF_2 0x07 +#define REG_FL_CONF_3 0x08 +#define REG_IO_CTRL 0x09 +#define REG_ENABLE 0x0A +#define REG_FLAG 0x0B +#define REG_MAX REG_FLAG + +struct lm3639_chip_data { + struct device *dev; + struct lm3639_platform_data *pdata; + + struct backlight_device *bled; + struct led_classdev cdev_flash; + struct led_classdev cdev_torch; + struct regmap *regmap; + + unsigned int bled_mode; + unsigned int bled_map; + unsigned int last_flag; +}; + +/* initialize chip */ +static int __devinit lm3639_chip_init(struct lm3639_chip_data *pchip) +{ + int ret; + unsigned int reg_val; + struct lm3639_platform_data *pdata = pchip->pdata; + + /* input pins config. */ + ret = + regmap_update_bits(pchip->regmap, REG_BL_CONF_1, 0x08, + pdata->pin_pwm); + if (ret < 0) + goto out; + + reg_val = (pdata->pin_pwm & 0x40) | pdata->pin_strobe | pdata->pin_tx; + ret = regmap_update_bits(pchip->regmap, REG_IO_CTRL, 0x7C, reg_val); + if (ret < 0) + goto out; + + /* init brightness */ + ret = regmap_write(pchip->regmap, REG_BL_CONF_4, pdata->init_brt_led); + if (ret < 0) + goto out; + + ret = regmap_write(pchip->regmap, REG_BL_CONF_3, pdata->init_brt_led); + if (ret < 0) + goto out; + + /* output pins config. */ + if (!pdata->init_brt_led) + reg_val = pdata->fled_pins | pdata->bled_pins; + else + reg_val = pdata->fled_pins | pdata->bled_pins | 0x01; + + ret = regmap_update_bits(pchip->regmap, REG_ENABLE, 0x79, reg_val); + if (ret < 0) + goto out; + + return ret; +out: + dev_err(pchip->dev, "i2c failed to access register\n"); + return ret; +} + +/* update and get brightness */ +static int lm3639_bled_update_status(struct backlight_device *bl) +{ + int ret; + unsigned int reg_val; + struct lm3639_chip_data *pchip = bl_get_data(bl); + struct lm3639_platform_data *pdata = pchip->pdata; + + ret = regmap_read(pchip->regmap, REG_FLAG, ®_val); + if (ret < 0) + goto out; + + if (reg_val != 0) + dev_info(pchip->dev, "last flag is 0x%x\n", reg_val); + + /* pwm control */ + if (pdata->pin_pwm) { + if (pdata->pwm_set_intensity) + pdata->pwm_set_intensity(bl->props.brightness, + pdata->max_brt_led); + else + dev_err(pchip->dev, + "No pwm control func. in plat-data\n"); + return bl->props.brightness; + } + + /* i2c control and set brigtness */ + ret = regmap_write(pchip->regmap, REG_BL_CONF_4, bl->props.brightness); + if (ret < 0) + goto out; + ret = regmap_write(pchip->regmap, REG_BL_CONF_3, bl->props.brightness); + if (ret < 0) + goto out; + + if (!bl->props.brightness) + ret = regmap_update_bits(pchip->regmap, REG_ENABLE, 0x01, 0x00); + else + ret = regmap_update_bits(pchip->regmap, REG_ENABLE, 0x01, 0x01); + if (ret < 0) + goto out; + + return bl->props.brightness; +out: + dev_err(pchip->dev, "i2c failed to access registers\n"); + return bl->props.brightness; +} + +static int lm3639_bled_get_brightness(struct backlight_device *bl) +{ + int ret; + unsigned int reg_val; + struct lm3639_chip_data *pchip = bl_get_data(bl); + struct lm3639_platform_data *pdata = pchip->pdata; + + if (pdata->pin_pwm) { + if (pdata->pwm_get_intensity) + bl->props.brightness = pdata->pwm_get_intensity(); + else + dev_err(pchip->dev, + "No pwm control func. in plat-data\n"); + return bl->props.brightness; + } + + ret = regmap_read(pchip->regmap, REG_BL_CONF_1, ®_val); + if (ret < 0) + goto out; + if (reg_val & 0x10) + ret = regmap_read(pchip->regmap, REG_BL_CONF_4, ®_val); + else + ret = regmap_read(pchip->regmap, REG_BL_CONF_3, ®_val); + if (ret < 0) + goto out; + bl->props.brightness = reg_val; + + return bl->props.brightness; +out: + dev_err(pchip->dev, "i2c failed to access register\n"); + return bl->props.brightness; +} + +static const struct backlight_ops lm3639_bled_ops = { + .options = BL_CORE_SUSPENDRESUME, + .update_status = lm3639_bled_update_status, + .get_brightness = lm3639_bled_get_brightness, +}; + +/* backlight mapping mode */ +static ssize_t lm3639_bled_mode_store(struct device *dev, + struct device_attribute *devAttr, + const char *buf, size_t size) +{ + ssize_t ret; + struct lm3639_chip_data *pchip = dev_get_drvdata(dev); + unsigned int state; + + ret = kstrtouint(buf, 10, &state); + if (ret) + goto out_input; + + if (!state) + ret = + regmap_update_bits(pchip->regmap, REG_BL_CONF_1, 0x10, + 0x00); + else + ret = + regmap_update_bits(pchip->regmap, REG_BL_CONF_1, 0x10, + 0x10); + + if (ret < 0) + goto out; + + return size; + +out: + dev_err(pchip->dev, "%s:i2c access fail to register\n", __func__); + return size; + +out_input: + dev_err(pchip->dev, "%s:input conversion fail\n", __func__); + return size; + +} + +static DEVICE_ATTR(bled_mode, 0666, NULL, lm3639_bled_mode_store); + +/* torch */ +static void lm3639_torch_brightness_set(struct led_classdev *cdev, + enum led_brightness brightness) +{ + int ret; + unsigned int reg_val; + struct lm3639_chip_data *pchip; + + pchip = container_of(cdev, struct lm3639_chip_data, cdev_torch); + + ret = regmap_read(pchip->regmap, REG_FLAG, ®_val); + if (ret < 0) + goto out; + if (reg_val != 0) + dev_info(pchip->dev, "last flag is 0x%x\n", reg_val); + + /* brightness 0 means off state */ + if (!brightness) { + ret = regmap_update_bits(pchip->regmap, REG_ENABLE, 0x06, 0x00); + if (ret < 0) + goto out; + return; + } + + ret = regmap_update_bits(pchip->regmap, + REG_FL_CONF_1, 0x70, (brightness - 1) << 4); + if (ret < 0) + goto out; + ret = regmap_update_bits(pchip->regmap, REG_ENABLE, 0x06, 0x02); + if (ret < 0) + goto out; + + return; +out: + dev_err(pchip->dev, "i2c failed to access register\n"); + return; +} + +/* flash */ +static void lm3639_flash_brightness_set(struct led_classdev *cdev, + enum led_brightness brightness) +{ + int ret; + unsigned int reg_val; + struct lm3639_chip_data *pchip; + + pchip = container_of(cdev, struct lm3639_chip_data, cdev_flash); + + ret = regmap_read(pchip->regmap, REG_FLAG, ®_val); + if (ret < 0) + goto out; + if (reg_val != 0) + dev_info(pchip->dev, "last flag is 0x%x\n", reg_val); + + /* torch off before flash control */ + ret = regmap_update_bits(pchip->regmap, REG_ENABLE, 0x06, 0x00); + if (ret < 0) + goto out; + + /* brightness 0 means off state */ + if (!brightness) + return; + + ret = regmap_update_bits(pchip->regmap, + REG_FL_CONF_1, 0x0F, brightness - 1); + if (ret < 0) + goto out; + ret = regmap_update_bits(pchip->regmap, REG_ENABLE, 0x06, 0x06); + if (ret < 0) + goto out; + + return; +out: + dev_err(pchip->dev, "i2c failed to access register\n"); + return; +} + +static const struct regmap_config lm3639_regmap = { + .reg_bits = 8, + .val_bits = 8, + .max_register = REG_MAX, +}; + +static int __devinit lm3639_probe(struct i2c_client *client, + const struct i2c_device_id *id) +{ + int ret; + struct lm3639_chip_data *pchip; + struct lm3639_platform_data *pdata = client->dev.platform_data; + struct backlight_properties props; + + if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) { + dev_err(&client->dev, "i2c functionality check fail.\n"); + return -EOPNOTSUPP; + } + + if (pdata == NULL) { + dev_err(&client->dev, "Needs Platform Data.\n"); + return -ENODATA; + } + + pchip = devm_kzalloc(&client->dev, + sizeof(struct lm3639_chip_data), GFP_KERNEL); + if (!pchip) + return -ENOMEM; + + pchip->pdata = pdata; + pchip->dev = &client->dev; + + pchip->regmap = devm_regmap_init_i2c(client, &lm3639_regmap); + if (IS_ERR(pchip->regmap)) { + ret = PTR_ERR(pchip->regmap); + dev_err(&client->dev, "fail : allocate register map: %d\n", + ret); + return ret; + } + i2c_set_clientdata(client, pchip); + + /* chip initialize */ + ret = lm3639_chip_init(pchip); + if (ret < 0) { + dev_err(&client->dev, "fail : chip init\n"); + goto err_out; + } + + /* backlight */ + props.type = BACKLIGHT_RAW; + props.brightness = pdata->init_brt_led; + props.max_brightness = pdata->max_brt_led; + pchip->bled = + backlight_device_register("lm3639_bled", pchip->dev, pchip, + &lm3639_bled_ops, &props); + if (IS_ERR(pchip->bled)) { + dev_err(&client->dev, "fail : backlight register\n"); + ret = -EIO; + goto err_out; + } + + ret = device_create_file(&(pchip->bled->dev), &dev_attr_bled_mode); + if (ret < 0) { + dev_err(&client->dev, "failed : add sysfs entries\n"); + ret = -EIO; + goto err_bled_mode; + } + + /* flash */ + pchip->cdev_flash.name = "lm3639_flash"; + pchip->cdev_flash.max_brightness = 16; + pchip->cdev_flash.brightness_set = lm3639_flash_brightness_set; + ret = led_classdev_register((struct device *) + &client->dev, &pchip->cdev_flash); + if (ret < 0) { + dev_err(&client->dev, "fail : flash register\n"); + ret = -EIO; + goto err_flash; + } + + /* torch */ + pchip->cdev_torch.name = "lm3639_torch"; + pchip->cdev_torch.max_brightness = 8; + pchip->cdev_torch.brightness_set = lm3639_torch_brightness_set; + ret = led_classdev_register((struct device *) + &client->dev, &pchip->cdev_torch); + if (ret < 0) { + dev_err(&client->dev, "fail : torch register\n"); + ret = -EIO; + goto err_torch; + } + + return 0; + +err_torch: + led_classdev_unregister(&pchip->cdev_flash); +err_flash: + device_remove_file(&(pchip->bled->dev), &dev_attr_bled_mode); +err_bled_mode: + backlight_device_unregister(pchip->bled); +err_out: + return ret; +} + +static int __devexit lm3639_remove(struct i2c_client *client) +{ + struct lm3639_chip_data *pchip = i2c_get_clientdata(client); + + regmap_write(pchip->regmap, REG_ENABLE, 0x00); + + if (&pchip->cdev_torch) + led_classdev_unregister(&pchip->cdev_torch); + if (&pchip->cdev_flash) + led_classdev_unregister(&pchip->cdev_flash); + if (pchip->bled) { + device_remove_file(&(pchip->bled->dev), &dev_attr_bled_mode); + backlight_device_unregister(pchip->bled); + } + return 0; +} + +static const struct i2c_device_id lm3639_id[] = { + {LM3639_NAME, 0}, + {} +}; + +MODULE_DEVICE_TABLE(i2c, lm3639_id); +static struct i2c_driver lm3639_i2c_driver = { + .driver = { + .name = LM3639_NAME, + }, + .probe = lm3639_probe, + .remove = __devexit_p(lm3639_remove), + .id_table = lm3639_id, +}; + +module_i2c_driver(lm3639_i2c_driver); + +MODULE_DESCRIPTION("Texas Instruments Backlight+Flash LED driver for LM3639"); +MODULE_AUTHOR("Daniel Jeong <daniel.jeong@ti.com>"); +MODULE_AUTHOR("G.Shark Jeong <gshark.jeong@gmail.com>"); +MODULE_LICENSE("GPL v2"); diff --git a/drivers/video/backlight/ltv350qv.c b/drivers/video/backlight/ltv350qv.c index 6c0f1ac0d32..4066a5bbd82 100644 --- a/drivers/video/backlight/ltv350qv.c +++ b/drivers/video/backlight/ltv350qv.c @@ -75,7 +75,7 @@ static int ltv350qv_power_on(struct ltv350qv *lcd) /* Power On Reset Display off State */ if (ltv350qv_write_reg(lcd, LTV_PWRCTL1, 0x0000)) goto err; - msleep(15); + usleep_range(15000, 16000); /* Power Setting Function 1 */ if (ltv350qv_write_reg(lcd, LTV_PWRCTL1, LTV_VCOM_DISABLE)) @@ -153,7 +153,7 @@ err_settings: err_power2: err_power1: ltv350qv_write_reg(lcd, LTV_PWRCTL2, 0x0000); - msleep(1); + usleep_range(1000, 1100); err: ltv350qv_write_reg(lcd, LTV_PWRCTL1, LTV_VCOM_DISABLE); return -EIO; @@ -175,7 +175,7 @@ static int ltv350qv_power_off(struct ltv350qv *lcd) ret |= ltv350qv_write_reg(lcd, LTV_PWRCTL2, 0x0000); /* Wait at least 1 ms */ - msleep(1); + usleep_range(1000, 1100); /* Power down setting 2 */ ret |= ltv350qv_write_reg(lcd, LTV_PWRCTL1, LTV_VCOM_DISABLE); diff --git a/drivers/video/backlight/platform_lcd.c b/drivers/video/backlight/platform_lcd.c index b6672340d6c..ca4f5d70fe1 100644 --- a/drivers/video/backlight/platform_lcd.c +++ b/drivers/video/backlight/platform_lcd.c @@ -16,6 +16,7 @@ #include <linux/fb.h> #include <linux/backlight.h> #include <linux/lcd.h> +#include <linux/of.h> #include <linux/slab.h> #include <video/platform_lcd.h> @@ -145,6 +146,14 @@ static SIMPLE_DEV_PM_OPS(platform_lcd_pm_ops, platform_lcd_suspend, platform_lcd_resume); #endif +#ifdef CONFIG_OF +static const struct of_device_id platform_lcd_of_match[] = { + { .compatible = "platform-lcd" }, + {}, +}; +MODULE_DEVICE_TABLE(of, platform_lcd_of_match); +#endif + static struct platform_driver platform_lcd_driver = { .driver = { .name = "platform-lcd", @@ -152,6 +161,7 @@ static struct platform_driver platform_lcd_driver = { #ifdef CONFIG_PM .pm = &platform_lcd_pm_ops, #endif + .of_match_table = of_match_ptr(platform_lcd_of_match), }, .probe = platform_lcd_probe, .remove = __devexit_p(platform_lcd_remove), diff --git a/drivers/video/backlight/progear_bl.c b/drivers/video/backlight/progear_bl.c deleted file mode 100644 index 69b35f02929..00000000000 --- a/drivers/video/backlight/progear_bl.c +++ /dev/null @@ -1,162 +0,0 @@ -/* - * Backlight Driver for Frontpath ProGear HX1050+ - * - * Copyright (c) 2006 Marcin Juszkiewicz - * - * Based on Progear LCD driver by M Schacht - * <mschacht at alumni dot washington dot edu> - * - * Based on Sharp's Corgi Backlight Driver - * Based on Backlight Driver for HP Jornada 680 - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - */ - -#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt - -#include <linux/module.h> -#include <linux/kernel.h> -#include <linux/init.h> -#include <linux/platform_device.h> -#include <linux/mutex.h> -#include <linux/fb.h> -#include <linux/backlight.h> -#include <linux/pci.h> - -#define PMU_LPCR 0xB0 -#define SB_MPS1 0x61 -#define HW_LEVEL_MAX 0x77 -#define HW_LEVEL_MIN 0x4f - -static struct pci_dev *pmu_dev = NULL; -static struct pci_dev *sb_dev = NULL; - -static int progearbl_set_intensity(struct backlight_device *bd) -{ - int intensity = bd->props.brightness; - - if (bd->props.power != FB_BLANK_UNBLANK) - intensity = 0; - if (bd->props.fb_blank != FB_BLANK_UNBLANK) - intensity = 0; - - pci_write_config_byte(pmu_dev, PMU_LPCR, intensity + HW_LEVEL_MIN); - - return 0; -} - -static int progearbl_get_intensity(struct backlight_device *bd) -{ - u8 intensity; - pci_read_config_byte(pmu_dev, PMU_LPCR, &intensity); - - return intensity - HW_LEVEL_MIN; -} - -static const struct backlight_ops progearbl_ops = { - .get_brightness = progearbl_get_intensity, - .update_status = progearbl_set_intensity, -}; - -static int progearbl_probe(struct platform_device *pdev) -{ - struct backlight_properties props; - u8 temp; - struct backlight_device *progear_backlight_device; - int ret; - - pmu_dev = pci_get_device(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M7101, NULL); - if (!pmu_dev) { - pr_err("ALI M7101 PMU not found.\n"); - return -ENODEV; - } - - sb_dev = pci_get_device(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1533, NULL); - if (!sb_dev) { - pr_err("ALI 1533 SB not found.\n"); - ret = -ENODEV; - goto put_pmu; - } - - /* Set SB_MPS1 to enable brightness control. */ - pci_read_config_byte(sb_dev, SB_MPS1, &temp); - pci_write_config_byte(sb_dev, SB_MPS1, temp | 0x20); - - memset(&props, 0, sizeof(struct backlight_properties)); - props.type = BACKLIGHT_RAW; - props.max_brightness = HW_LEVEL_MAX - HW_LEVEL_MIN; - progear_backlight_device = backlight_device_register("progear-bl", - &pdev->dev, NULL, - &progearbl_ops, - &props); - if (IS_ERR(progear_backlight_device)) { - ret = PTR_ERR(progear_backlight_device); - goto put_sb; - } - - platform_set_drvdata(pdev, progear_backlight_device); - - progear_backlight_device->props.power = FB_BLANK_UNBLANK; - progear_backlight_device->props.brightness = HW_LEVEL_MAX - HW_LEVEL_MIN; - progearbl_set_intensity(progear_backlight_device); - - return 0; -put_sb: - pci_dev_put(sb_dev); -put_pmu: - pci_dev_put(pmu_dev); - return ret; -} - -static int progearbl_remove(struct platform_device *pdev) -{ - struct backlight_device *bd = platform_get_drvdata(pdev); - backlight_device_unregister(bd); - - return 0; -} - -static struct platform_driver progearbl_driver = { - .probe = progearbl_probe, - .remove = progearbl_remove, - .driver = { - .name = "progear-bl", - }, -}; - -static struct platform_device *progearbl_device; - -static int __init progearbl_init(void) -{ - int ret = platform_driver_register(&progearbl_driver); - - if (ret) - return ret; - progearbl_device = platform_device_register_simple("progear-bl", -1, - NULL, 0); - if (IS_ERR(progearbl_device)) { - platform_driver_unregister(&progearbl_driver); - return PTR_ERR(progearbl_device); - } - - return 0; -} - -static void __exit progearbl_exit(void) -{ - pci_dev_put(pmu_dev); - pci_dev_put(sb_dev); - - platform_device_unregister(progearbl_device); - platform_driver_unregister(&progearbl_driver); -} - -module_init(progearbl_init); -module_exit(progearbl_exit); - -MODULE_AUTHOR("Marcin Juszkiewicz <linux@hrw.one.pl>"); -MODULE_DESCRIPTION("ProGear Backlight Driver"); -MODULE_LICENSE("GPL"); diff --git a/drivers/video/geode/gx1fb_core.c b/drivers/video/geode/gx1fb_core.c index 5a5d0928df3..265c5ed59ad 100644 --- a/drivers/video/geode/gx1fb_core.c +++ b/drivers/video/geode/gx1fb_core.c @@ -29,7 +29,7 @@ static int crt_option = 1; static char panel_option[32] = ""; /* Modes relevant to the GX1 (taken from modedb.c) */ -static const struct fb_videomode __devinitdata gx1_modedb[] = { +static const struct fb_videomode __devinitconst gx1_modedb[] = { /* 640x480-60 VESA */ { NULL, 60, 640, 480, 39682, 48, 16, 33, 10, 96, 2, 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, diff --git a/drivers/video/gxt4500.c b/drivers/video/gxt4500.c index 0fad23f810a..0e9afa41d16 100644 --- a/drivers/video/gxt4500.c +++ b/drivers/video/gxt4500.c @@ -156,7 +156,7 @@ struct gxt4500_par { static char *mode_option; /* default mode: 1280x1024 @ 60 Hz, 8 bpp */ -static const struct fb_videomode defaultmode __devinitdata = { +static const struct fb_videomode defaultmode __devinitconst = { .refresh = 60, .xres = 1280, .yres = 1024, @@ -581,7 +581,7 @@ static int gxt4500_blank(int blank, struct fb_info *info) return 0; } -static const struct fb_fix_screeninfo gxt4500_fix __devinitdata = { +static const struct fb_fix_screeninfo gxt4500_fix __devinitconst = { .id = "IBM GXT4500P", .type = FB_TYPE_PACKED_PIXELS, .visual = FB_VISUAL_PSEUDOCOLOR, diff --git a/drivers/video/i810/i810_main.c b/drivers/video/i810/i810_main.c index b83f36190ca..5c067816a81 100644 --- a/drivers/video/i810/i810_main.c +++ b/drivers/video/i810/i810_main.c @@ -97,7 +97,7 @@ static int i810fb_blank (int blank_mode, struct fb_info *info); static void i810fb_release_resource (struct fb_info *info, struct i810fb_par *par); /* PCI */ -static const char *i810_pci_list[] __devinitdata = { +static const char * const i810_pci_list[] __devinitconst = { "Intel(R) 810 Framebuffer Device" , "Intel(R) 810-DC100 Framebuffer Device" , "Intel(R) 810E Framebuffer Device" , diff --git a/drivers/video/jz4740_fb.c b/drivers/video/jz4740_fb.c index de366937c93..3c63fc24bb1 100644 --- a/drivers/video/jz4740_fb.c +++ b/drivers/video/jz4740_fb.c @@ -136,7 +136,7 @@ struct jzfb { uint32_t pseudo_palette[16]; }; -static const struct fb_fix_screeninfo jzfb_fix __devinitdata = { +static const struct fb_fix_screeninfo jzfb_fix __devinitconst = { .id = "JZ4740 FB", .type = FB_TYPE_PACKED_PIXELS, .visual = FB_VISUAL_TRUECOLOR, |