diff options
Diffstat (limited to 'drivers/ata/libata-core.c')
| -rw-r--r-- | drivers/ata/libata-core.c | 201 |
1 files changed, 112 insertions, 89 deletions
diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c index fecca4223f8..88c242856da 100644 --- a/drivers/ata/libata-core.c +++ b/drivers/ata/libata-core.c @@ -56,6 +56,7 @@ #include <linux/workqueue.h> #include <linux/scatterlist.h> #include <linux/io.h> +#include <linux/async.h> #include <scsi/scsi.h> #include <scsi/scsi_cmnd.h> #include <scsi/scsi_host.h> @@ -1006,6 +1007,7 @@ static const char *sata_spd_string(unsigned int spd) static const char * const spd_str[] = { "1.5 Gbps", "3.0 Gbps", + "6.0 Gbps", }; if (spd == 0 || (spd - 1) >= ARRAY_SIZE(spd_str)) @@ -1999,6 +2001,10 @@ unsigned int ata_pio_need_iordy(const struct ata_device *adev) as the caller should know this */ if (adev->link->ap->flags & ATA_FLAG_NO_IORDY) return 0; + /* CF spec. r4.1 Table 22 says no iordy on PIO5 and PIO6. */ + if (ata_id_is_cfa(adev->id) + && (adev->pio_mode == XFER_PIO_5 || adev->pio_mode == XFER_PIO_6)) + return 0; /* PIO3 and higher it is mandatory */ if (adev->pio_mode > XFER_PIO_2) return 1; @@ -3023,33 +3029,33 @@ int sata_set_spd(struct ata_link *link) */ static const struct ata_timing ata_timing[] = { -/* { XFER_PIO_SLOW, 120, 290, 240, 960, 290, 240, 960, 0 }, */ - { XFER_PIO_0, 70, 290, 240, 600, 165, 150, 600, 0 }, - { XFER_PIO_1, 50, 290, 93, 383, 125, 100, 383, 0 }, - { XFER_PIO_2, 30, 290, 40, 330, 100, 90, 240, 0 }, - { XFER_PIO_3, 30, 80, 70, 180, 80, 70, 180, 0 }, - { XFER_PIO_4, 25, 70, 25, 120, 70, 25, 120, 0 }, - { XFER_PIO_5, 15, 65, 25, 100, 65, 25, 100, 0 }, - { XFER_PIO_6, 10, 55, 20, 80, 55, 20, 80, 0 }, - - { XFER_SW_DMA_0, 120, 0, 0, 0, 480, 480, 960, 0 }, - { XFER_SW_DMA_1, 90, 0, 0, 0, 240, 240, 480, 0 }, - { XFER_SW_DMA_2, 60, 0, 0, 0, 120, 120, 240, 0 }, - - { XFER_MW_DMA_0, 60, 0, 0, 0, 215, 215, 480, 0 }, - { XFER_MW_DMA_1, 45, 0, 0, 0, 80, 50, 150, 0 }, - { XFER_MW_DMA_2, 25, 0, 0, 0, 70, 25, 120, 0 }, - { XFER_MW_DMA_3, 25, 0, 0, 0, 65, 25, 100, 0 }, - { XFER_MW_DMA_4, 25, 0, 0, 0, 55, 20, 80, 0 }, - -/* { XFER_UDMA_SLOW, 0, 0, 0, 0, 0, 0, 0, 150 }, */ - { XFER_UDMA_0, 0, 0, 0, 0, 0, 0, 0, 120 }, - { XFER_UDMA_1, 0, 0, 0, 0, 0, 0, 0, 80 }, - { XFER_UDMA_2, 0, 0, 0, 0, 0, 0, 0, 60 }, - { XFER_UDMA_3, 0, 0, 0, 0, 0, 0, 0, 45 }, - { XFER_UDMA_4, 0, 0, 0, 0, 0, 0, 0, 30 }, - { XFER_UDMA_5, 0, 0, 0, 0, 0, 0, 0, 20 }, - { XFER_UDMA_6, 0, 0, 0, 0, 0, 0, 0, 15 }, +/* { XFER_PIO_SLOW, 120, 290, 240, 960, 290, 240, 0, 960, 0 }, */ + { XFER_PIO_0, 70, 290, 240, 600, 165, 150, 0, 600, 0 }, + { XFER_PIO_1, 50, 290, 93, 383, 125, 100, 0, 383, 0 }, + { XFER_PIO_2, 30, 290, 40, 330, 100, 90, 0, 240, 0 }, + { XFER_PIO_3, 30, 80, 70, 180, 80, 70, 0, 180, 0 }, + { XFER_PIO_4, 25, 70, 25, 120, 70, 25, 0, 120, 0 }, + { XFER_PIO_5, 15, 65, 25, 100, 65, 25, 0, 100, 0 }, + { XFER_PIO_6, 10, 55, 20, 80, 55, 20, 0, 80, 0 }, + + { XFER_SW_DMA_0, 120, 0, 0, 0, 480, 480, 50, 960, 0 }, + { XFER_SW_DMA_1, 90, 0, 0, 0, 240, 240, 30, 480, 0 }, + { XFER_SW_DMA_2, 60, 0, 0, 0, 120, 120, 20, 240, 0 }, + + { XFER_MW_DMA_0, 60, 0, 0, 0, 215, 215, 20, 480, 0 }, + { XFER_MW_DMA_1, 45, 0, 0, 0, 80, 50, 5, 150, 0 }, + { XFER_MW_DMA_2, 25, 0, 0, 0, 70, 25, 5, 120, 0 }, + { XFER_MW_DMA_3, 25, 0, 0, 0, 65, 25, 5, 100, 0 }, + { XFER_MW_DMA_4, 25, 0, 0, 0, 55, 20, 5, 80, 0 }, + +/* { XFER_UDMA_SLOW, 0, 0, 0, 0, 0, 0, 0, 0, 150 }, */ + { XFER_UDMA_0, 0, 0, 0, 0, 0, 0, 0, 0, 120 }, + { XFER_UDMA_1, 0, 0, 0, 0, 0, 0, 0, 0, 80 }, + { XFER_UDMA_2, 0, 0, 0, 0, 0, 0, 0, 0, 60 }, + { XFER_UDMA_3, 0, 0, 0, 0, 0, 0, 0, 0, 45 }, + { XFER_UDMA_4, 0, 0, 0, 0, 0, 0, 0, 0, 30 }, + { XFER_UDMA_5, 0, 0, 0, 0, 0, 0, 0, 0, 20 }, + { XFER_UDMA_6, 0, 0, 0, 0, 0, 0, 0, 0, 15 }, { 0xFF } }; @@ -3059,14 +3065,15 @@ static const struct ata_timing ata_timing[] = { static void ata_timing_quantize(const struct ata_timing *t, struct ata_timing *q, int T, int UT) { - q->setup = EZ(t->setup * 1000, T); - q->act8b = EZ(t->act8b * 1000, T); - q->rec8b = EZ(t->rec8b * 1000, T); - q->cyc8b = EZ(t->cyc8b * 1000, T); - q->active = EZ(t->active * 1000, T); - q->recover = EZ(t->recover * 1000, T); - q->cycle = EZ(t->cycle * 1000, T); - q->udma = EZ(t->udma * 1000, UT); + q->setup = EZ(t->setup * 1000, T); + q->act8b = EZ(t->act8b * 1000, T); + q->rec8b = EZ(t->rec8b * 1000, T); + q->cyc8b = EZ(t->cyc8b * 1000, T); + q->active = EZ(t->active * 1000, T); + q->recover = EZ(t->recover * 1000, T); + q->dmack_hold = EZ(t->dmack_hold * 1000, T); + q->cycle = EZ(t->cycle * 1000, T); + q->udma = EZ(t->udma * 1000, UT); } void ata_timing_merge(const struct ata_timing *a, const struct ata_timing *b, @@ -3078,6 +3085,7 @@ void ata_timing_merge(const struct ata_timing *a, const struct ata_timing *b, if (what & ATA_TIMING_CYC8B ) m->cyc8b = max(a->cyc8b, b->cyc8b); if (what & ATA_TIMING_ACTIVE ) m->active = max(a->active, b->active); if (what & ATA_TIMING_RECOVER) m->recover = max(a->recover, b->recover); + if (what & ATA_TIMING_DMACK_HOLD) m->dmack_hold = max(a->dmack_hold, b->dmack_hold); if (what & ATA_TIMING_CYCLE ) m->cycle = max(a->cycle, b->cycle); if (what & ATA_TIMING_UDMA ) m->udma = max(a->udma, b->udma); } @@ -4550,7 +4558,7 @@ void ata_sg_clean(struct ata_queued_cmd *qc) struct scatterlist *sg = qc->sg; int dir = qc->dma_dir; - WARN_ON(sg == NULL); + WARN_ON_ONCE(sg == NULL); VPRINTK("unmapping %u sg elements\n", qc->n_elem); @@ -4770,7 +4778,7 @@ void ata_qc_free(struct ata_queued_cmd *qc) struct ata_port *ap = qc->ap; unsigned int tag; - WARN_ON(qc == NULL); /* ata_qc_from_tag _might_ return NULL */ + WARN_ON_ONCE(qc == NULL); /* ata_qc_from_tag _might_ return NULL */ qc->flags = 0; tag = qc->tag; @@ -4785,8 +4793,8 @@ void __ata_qc_complete(struct ata_queued_cmd *qc) struct ata_port *ap = qc->ap; struct ata_link *link = qc->dev->link; - WARN_ON(qc == NULL); /* ata_qc_from_tag _might_ return NULL */ - WARN_ON(!(qc->flags & ATA_QCFLAG_ACTIVE)); + WARN_ON_ONCE(qc == NULL); /* ata_qc_from_tag _might_ return NULL */ + WARN_ON_ONCE(!(qc->flags & ATA_QCFLAG_ACTIVE)); if (likely(qc->flags & ATA_QCFLAG_DMAMAP)) ata_sg_clean(qc); @@ -4872,7 +4880,7 @@ void ata_qc_complete(struct ata_queued_cmd *qc) struct ata_device *dev = qc->dev; struct ata_eh_info *ehi = &dev->link->eh_info; - WARN_ON(ap->pflags & ATA_PFLAG_FROZEN); + WARN_ON_ONCE(ap->pflags & ATA_PFLAG_FROZEN); if (unlikely(qc->err_mask)) qc->flags |= ATA_QCFLAG_FAILED; @@ -4994,16 +5002,16 @@ void ata_qc_issue(struct ata_queued_cmd *qc) * check is skipped for old EH because it reuses active qc to * request ATAPI sense. */ - WARN_ON(ap->ops->error_handler && ata_tag_valid(link->active_tag)); + WARN_ON_ONCE(ap->ops->error_handler && ata_tag_valid(link->active_tag)); if (ata_is_ncq(prot)) { - WARN_ON(link->sactive & (1 << qc->tag)); + WARN_ON_ONCE(link->sactive & (1 << qc->tag)); if (!link->sactive) ap->nr_active_links++; link->sactive |= 1 << qc->tag; } else { - WARN_ON(link->sactive); + WARN_ON_ONCE(link->sactive); ap->nr_active_links++; link->active_tag = qc->tag; @@ -5909,6 +5917,65 @@ void ata_host_init(struct ata_host *host, struct device *dev, host->ops = ops; } + +static void async_port_probe(void *data, async_cookie_t cookie) +{ + int rc; + struct ata_port *ap = data; + + /* + * If we're not allowed to scan this host in parallel, + * we need to wait until all previous scans have completed + * before going further. + * Jeff Garzik says this is only within a controller, so we + * don't need to wait for port 0, only for later ports. + */ + if (!(ap->host->flags & ATA_HOST_PARALLEL_SCAN) && ap->port_no != 0) + async_synchronize_cookie(cookie); + + /* probe */ + if (ap->ops->error_handler) { + struct ata_eh_info *ehi = &ap->link.eh_info; + unsigned long flags; + + ata_port_probe(ap); + + /* kick EH for boot probing */ + spin_lock_irqsave(ap->lock, flags); + + ehi->probe_mask |= ATA_ALL_DEVICES; + ehi->action |= ATA_EH_RESET | ATA_EH_LPM; + ehi->flags |= ATA_EHI_NO_AUTOPSY | ATA_EHI_QUIET; + + ap->pflags &= ~ATA_PFLAG_INITIALIZING; + ap->pflags |= ATA_PFLAG_LOADING; + ata_port_schedule_eh(ap); + + spin_unlock_irqrestore(ap->lock, flags); + + /* wait for EH to finish */ + ata_port_wait_eh(ap); + } else { + DPRINTK("ata%u: bus probe begin\n", ap->print_id); + rc = ata_bus_probe(ap); + DPRINTK("ata%u: bus probe end\n", ap->print_id); + + if (rc) { + /* FIXME: do something useful here? + * Current libata behavior will + * tear down everything when + * the module is removed + * or the h/w is unplugged. + */ + } + } + + /* in order to keep device order, we need to synchronize at this point */ + async_synchronize_cookie(cookie); + + ata_scsi_scan_host(ap, 1); + +} /** * ata_host_register - register initialized ATA host * @host: ATA host to register @@ -5988,52 +6055,9 @@ int ata_host_register(struct ata_host *host, struct scsi_host_template *sht) DPRINTK("probe begin\n"); for (i = 0; i < host->n_ports; i++) { struct ata_port *ap = host->ports[i]; - - /* probe */ - if (ap->ops->error_handler) { - struct ata_eh_info *ehi = &ap->link.eh_info; - unsigned long flags; - - ata_port_probe(ap); - - /* kick EH for boot probing */ - spin_lock_irqsave(ap->lock, flags); - - ehi->probe_mask |= ATA_ALL_DEVICES; - ehi->action |= ATA_EH_RESET | ATA_EH_LPM; - ehi->flags |= ATA_EHI_NO_AUTOPSY | ATA_EHI_QUIET; - - ap->pflags &= ~ATA_PFLAG_INITIALIZING; - ap->pflags |= ATA_PFLAG_LOADING; - ata_port_schedule_eh(ap); - - spin_unlock_irqrestore(ap->lock, flags); - - /* wait for EH to finish */ - ata_port_wait_eh(ap); - } else { - DPRINTK("ata%u: bus probe begin\n", ap->print_id); - rc = ata_bus_probe(ap); - DPRINTK("ata%u: bus probe end\n", ap->print_id); - - if (rc) { - /* FIXME: do something useful here? - * Current libata behavior will - * tear down everything when - * the module is removed - * or the h/w is unplugged. - */ - } - } - } - - /* probes are done, now scan each port's disk(s) */ - DPRINTK("host probe begin\n"); - for (i = 0; i < host->n_ports; i++) { - struct ata_port *ap = host->ports[i]; - - ata_scsi_scan_host(ap, 1); + async_schedule(async_port_probe, ap); } + DPRINTK("probe end\n"); return 0; } @@ -6616,7 +6640,6 @@ EXPORT_SYMBOL_GPL(ata_dev_pair); EXPORT_SYMBOL_GPL(ata_port_disable); EXPORT_SYMBOL_GPL(ata_ratelimit); EXPORT_SYMBOL_GPL(ata_wait_register); -EXPORT_SYMBOL_GPL(ata_scsi_ioctl); EXPORT_SYMBOL_GPL(ata_scsi_queuecmd); EXPORT_SYMBOL_GPL(ata_scsi_slave_config); EXPORT_SYMBOL_GPL(ata_scsi_slave_destroy); |