summaryrefslogtreecommitdiffstats
path: root/drivers
diff options
context:
space:
mode:
Diffstat (limited to 'drivers')
-rw-r--r--drivers/block/virtio_blk.c41
-rw-r--r--drivers/char/hvc_console.c1
-rw-r--r--drivers/char/virtio_console.c30
-rw-r--r--drivers/lguest/lg.h2
-rw-r--r--drivers/lguest/lguest_device.c8
-rw-r--r--drivers/lguest/lguest_user.c13
-rw-r--r--drivers/lguest/page_tables.c72
-rw-r--r--drivers/s390/kvm/kvm_virtio.c34
-rw-r--r--drivers/virtio/virtio.c2
-rw-r--r--drivers/virtio/virtio_balloon.c13
-rw-r--r--drivers/virtio/virtio_pci.c43
-rw-r--r--drivers/virtio/virtio_ring.c3
12 files changed, 206 insertions, 56 deletions
diff --git a/drivers/block/virtio_blk.c b/drivers/block/virtio_blk.c
index f151592ecf7..5d34764c8a8 100644
--- a/drivers/block/virtio_blk.c
+++ b/drivers/block/virtio_blk.c
@@ -6,7 +6,6 @@
#include <linux/virtio_blk.h>
#include <linux/scatterlist.h>
-#define VIRTIO_MAX_SG (3+MAX_PHYS_SEGMENTS)
#define PART_BITS 4
static int major, index;
@@ -26,8 +25,11 @@ struct virtio_blk
mempool_t *pool;
+ /* What host tells us, plus 2 for header & tailer. */
+ unsigned int sg_elems;
+
/* Scatterlist: can be too big for stack. */
- struct scatterlist sg[VIRTIO_MAX_SG];
+ struct scatterlist sg[/*sg_elems*/];
};
struct virtblk_req
@@ -97,8 +99,6 @@ static bool do_req(struct request_queue *q, struct virtio_blk *vblk,
if (blk_barrier_rq(vbr->req))
vbr->out_hdr.type |= VIRTIO_BLK_T_BARRIER;
- /* This init could be done at vblk creation time */
- sg_init_table(vblk->sg, VIRTIO_MAX_SG);
sg_set_buf(&vblk->sg[0], &vbr->out_hdr, sizeof(vbr->out_hdr));
num = blk_rq_map_sg(q, vbr->req, vblk->sg+1);
sg_set_buf(&vblk->sg[num+1], &vbr->status, sizeof(vbr->status));
@@ -130,7 +130,7 @@ static void do_virtblk_request(struct request_queue *q)
while ((req = elv_next_request(q)) != NULL) {
vblk = req->rq_disk->private_data;
- BUG_ON(req->nr_phys_segments > ARRAY_SIZE(vblk->sg));
+ BUG_ON(req->nr_phys_segments + 2 > vblk->sg_elems);
/* If this request fails, stop queue and wait for something to
finish to restart it. */
@@ -196,12 +196,22 @@ static int virtblk_probe(struct virtio_device *vdev)
int err;
u64 cap;
u32 v;
- u32 blk_size;
+ u32 blk_size, sg_elems;
if (index_to_minor(index) >= 1 << MINORBITS)
return -ENOSPC;
- vdev->priv = vblk = kmalloc(sizeof(*vblk), GFP_KERNEL);
+ /* We need to know how many segments before we allocate. */
+ err = virtio_config_val(vdev, VIRTIO_BLK_F_SEG_MAX,
+ offsetof(struct virtio_blk_config, seg_max),
+ &sg_elems);
+ if (err)
+ sg_elems = 1;
+
+ /* We need an extra sg elements at head and tail. */
+ sg_elems += 2;
+ vdev->priv = vblk = kmalloc(sizeof(*vblk) +
+ sizeof(vblk->sg[0]) * sg_elems, GFP_KERNEL);
if (!vblk) {
err = -ENOMEM;
goto out;
@@ -210,6 +220,8 @@ static int virtblk_probe(struct virtio_device *vdev)
INIT_LIST_HEAD(&vblk->reqs);
spin_lock_init(&vblk->lock);
vblk->vdev = vdev;
+ vblk->sg_elems = sg_elems;
+ sg_init_table(vblk->sg, vblk->sg_elems);
/* We expect one virtqueue, for output. */
vblk->vq = vdev->config->find_vq(vdev, 0, blk_done);
@@ -279,6 +291,13 @@ static int virtblk_probe(struct virtio_device *vdev)
}
set_capacity(vblk->disk, cap);
+ /* We can handle whatever the host told us to handle. */
+ blk_queue_max_phys_segments(vblk->disk->queue, vblk->sg_elems-2);
+ blk_queue_max_hw_segments(vblk->disk->queue, vblk->sg_elems-2);
+
+ /* No real sector limit. */
+ blk_queue_max_sectors(vblk->disk->queue, -1U);
+
/* Host can optionally specify maximum segment size and number of
* segments. */
err = virtio_config_val(vdev, VIRTIO_BLK_F_SIZE_MAX,
@@ -286,12 +305,8 @@ static int virtblk_probe(struct virtio_device *vdev)
&v);
if (!err)
blk_queue_max_segment_size(vblk->disk->queue, v);
-
- err = virtio_config_val(vdev, VIRTIO_BLK_F_SEG_MAX,
- offsetof(struct virtio_blk_config, seg_max),
- &v);
- if (!err)
- blk_queue_max_hw_segments(vblk->disk->queue, v);
+ else
+ blk_queue_max_segment_size(vblk->disk->queue, -1U);
/* Host can optionally specify the block size of the device */
err = virtio_config_val(vdev, VIRTIO_BLK_F_BLK_SIZE,
diff --git a/drivers/char/hvc_console.c b/drivers/char/hvc_console.c
index fb57f67bb42..0587b66d6fc 100644
--- a/drivers/char/hvc_console.c
+++ b/drivers/char/hvc_console.c
@@ -695,6 +695,7 @@ void hvc_resize(struct hvc_struct *hp, struct winsize ws)
hp->ws = ws;
schedule_work(&hp->tty_resize);
}
+EXPORT_SYMBOL_GPL(hvc_resize);
/*
* This kthread is either polling or interrupt driven. This is determined by
diff --git a/drivers/char/virtio_console.c b/drivers/char/virtio_console.c
index 3fb0d2c88ba..ff6f5a4b58f 100644
--- a/drivers/char/virtio_console.c
+++ b/drivers/char/virtio_console.c
@@ -138,12 +138,33 @@ int __init virtio_cons_early_init(int (*put_chars)(u32, const char *, int))
}
/*
+ * virtio console configuration. This supports:
+ * - console resize
+ */
+static void virtcons_apply_config(struct virtio_device *dev)
+{
+ struct winsize ws;
+
+ if (virtio_has_feature(dev, VIRTIO_CONSOLE_F_SIZE)) {
+ dev->config->get(dev,
+ offsetof(struct virtio_console_config, cols),
+ &ws.ws_col, sizeof(u16));
+ dev->config->get(dev,
+ offsetof(struct virtio_console_config, rows),
+ &ws.ws_row, sizeof(u16));
+ hvc_resize(hvc, ws);
+ }
+}
+
+/*
* we support only one console, the hvc struct is a global var
- * There is no need to do anything
+ * We set the configuration at this point, since we now have a tty
*/
static int notifier_add_vio(struct hvc_struct *hp, int data)
{
hp->irq_requested = 1;
+ virtcons_apply_config(vdev);
+
return 0;
}
@@ -234,11 +255,18 @@ static struct virtio_device_id id_table[] = {
{ 0 },
};
+static unsigned int features[] = {
+ VIRTIO_CONSOLE_F_SIZE,
+};
+
static struct virtio_driver virtio_console = {
+ .feature_table = features,
+ .feature_table_size = ARRAY_SIZE(features),
.driver.name = KBUILD_MODNAME,
.driver.owner = THIS_MODULE,
.id_table = id_table,
.probe = virtcons_probe,
+ .config_changed = virtcons_apply_config,
};
static int __init init(void)
diff --git a/drivers/lguest/lg.h b/drivers/lguest/lg.h
index 5faefeaf679..f2c641e0bdd 100644
--- a/drivers/lguest/lg.h
+++ b/drivers/lguest/lg.h
@@ -164,7 +164,7 @@ void copy_gdt(const struct lg_cpu *cpu, struct desc_struct *gdt);
void copy_gdt_tls(const struct lg_cpu *cpu, struct desc_struct *gdt);
/* page_tables.c: */
-int init_guest_pagetable(struct lguest *lg, unsigned long pgtable);
+int init_guest_pagetable(struct lguest *lg);
void free_guest_pagetable(struct lguest *lg);
void guest_new_pagetable(struct lg_cpu *cpu, unsigned long pgtable);
void guest_set_pmd(struct lguest *lg, unsigned long gpgdir, u32 i);
diff --git a/drivers/lguest/lguest_device.c b/drivers/lguest/lguest_device.c
index a661bbdae3d..915da6b8c92 100644
--- a/drivers/lguest/lguest_device.c
+++ b/drivers/lguest/lguest_device.c
@@ -250,7 +250,7 @@ static struct virtqueue *lg_find_vq(struct virtio_device *vdev,
/* Figure out how many pages the ring will take, and map that memory */
lvq->pages = lguest_map((unsigned long)lvq->config.pfn << PAGE_SHIFT,
DIV_ROUND_UP(vring_size(lvq->config.num,
- PAGE_SIZE),
+ LGUEST_VRING_ALIGN),
PAGE_SIZE));
if (!lvq->pages) {
err = -ENOMEM;
@@ -259,8 +259,8 @@ static struct virtqueue *lg_find_vq(struct virtio_device *vdev,
/* OK, tell virtio_ring.c to set up a virtqueue now we know its size
* and we've got a pointer to its pages. */
- vq = vring_new_virtqueue(lvq->config.num, vdev, lvq->pages,
- lg_notify, callback);
+ vq = vring_new_virtqueue(lvq->config.num, LGUEST_VRING_ALIGN,
+ vdev, lvq->pages, lg_notify, callback);
if (!vq) {
err = -ENOMEM;
goto unmap;
@@ -272,7 +272,7 @@ static struct virtqueue *lg_find_vq(struct virtio_device *vdev,
* the interrupt as a source of randomness: it'd be nice to have that
* back.. */
err = request_irq(lvq->config.irq, vring_interrupt, IRQF_SHARED,
- vdev->dev.bus_id, vq);
+ dev_name(&vdev->dev), vq);
if (err)
goto destroy_vring;
diff --git a/drivers/lguest/lguest_user.c b/drivers/lguest/lguest_user.c
index e73a000473c..34bc017b8b3 100644
--- a/drivers/lguest/lguest_user.c
+++ b/drivers/lguest/lguest_user.c
@@ -146,7 +146,7 @@ static int lg_cpu_start(struct lg_cpu *cpu, unsigned id, unsigned long start_ip)
return 0;
}
-/*L:020 The initialization write supplies 4 pointer sized (32 or 64 bit)
+/*L:020 The initialization write supplies 3 pointer sized (32 or 64 bit)
* values (in addition to the LHREQ_INITIALIZE value). These are:
*
* base: The start of the Guest-physical memory inside the Launcher memory.
@@ -155,9 +155,6 @@ static int lg_cpu_start(struct lg_cpu *cpu, unsigned id, unsigned long start_ip)
* allowed to access. The Guest memory lives inside the Launcher, so it sets
* this to ensure the Guest can only reach its own memory.
*
- * pgdir: The (Guest-physical) address of the top of the initial Guest
- * pagetables (which are set up by the Launcher).
- *
* start: The first instruction to execute ("eip" in x86-speak).
*/
static int initialize(struct file *file, const unsigned long __user *input)
@@ -166,7 +163,7 @@ static int initialize(struct file *file, const unsigned long __user *input)
* Guest. */
struct lguest *lg;
int err;
- unsigned long args[4];
+ unsigned long args[3];
/* We grab the Big Lguest lock, which protects against multiple
* simultaneous initializations. */
@@ -192,14 +189,14 @@ static int initialize(struct file *file, const unsigned long __user *input)
lg->mem_base = (void __user *)args[0];
lg->pfn_limit = args[1];
- /* This is the first cpu (cpu 0) and it will start booting at args[3] */
- err = lg_cpu_start(&lg->cpus[0], 0, args[3]);
+ /* This is the first cpu (cpu 0) and it will start booting at args[2] */
+ err = lg_cpu_start(&lg->cpus[0], 0, args[2]);
if (err)
goto release_guest;
/* Initialize the Guest's shadow page tables, using the toplevel
* address the Launcher gave us. This allocates memory, so can fail. */
- err = init_guest_pagetable(lg, args[2]);
+ err = init_guest_pagetable(lg);
if (err)
goto free_regs;
diff --git a/drivers/lguest/page_tables.c b/drivers/lguest/page_tables.c
index 81d0c605344..576a8318221 100644
--- a/drivers/lguest/page_tables.c
+++ b/drivers/lguest/page_tables.c
@@ -14,6 +14,7 @@
#include <linux/percpu.h>
#include <asm/tlbflush.h>
#include <asm/uaccess.h>
+#include <asm/bootparam.h>
#include "lg.h"
/*M:008 We hold reference to pages, which prevents them from being swapped.
@@ -581,15 +582,82 @@ void guest_set_pmd(struct lguest *lg, unsigned long gpgdir, u32 idx)
release_pgd(lg, lg->pgdirs[pgdir].pgdir + idx);
}
+/* Once we know how much memory we have we can construct simple identity
+ * (which set virtual == physical) and linear mappings
+ * which will get the Guest far enough into the boot to create its own.
+ *
+ * We lay them out of the way, just below the initrd (which is why we need to
+ * know its size here). */
+static unsigned long setup_pagetables(struct lguest *lg,
+ unsigned long mem,
+ unsigned long initrd_size)
+{
+ pgd_t __user *pgdir;
+ pte_t __user *linear;
+ unsigned int mapped_pages, i, linear_pages, phys_linear;
+ unsigned long mem_base = (unsigned long)lg->mem_base;
+
+ /* We have mapped_pages frames to map, so we need
+ * linear_pages page tables to map them. */
+ mapped_pages = mem / PAGE_SIZE;
+ linear_pages = (mapped_pages + PTRS_PER_PTE - 1) / PTRS_PER_PTE;
+
+ /* We put the toplevel page directory page at the top of memory. */
+ pgdir = (pgd_t *)(mem + mem_base - initrd_size - PAGE_SIZE);
+
+ /* Now we use the next linear_pages pages as pte pages */
+ linear = (void *)pgdir - linear_pages * PAGE_SIZE;
+
+ /* Linear mapping is easy: put every page's address into the
+ * mapping in order. */
+ for (i = 0; i < mapped_pages; i++) {
+ pte_t pte;
+ pte = pfn_pte(i, __pgprot(_PAGE_PRESENT|_PAGE_RW|_PAGE_USER));
+ if (copy_to_user(&linear[i], &pte, sizeof(pte)) != 0)
+ return -EFAULT;
+ }
+
+ /* The top level points to the linear page table pages above.
+ * We setup the identity and linear mappings here. */
+ phys_linear = (unsigned long)linear - mem_base;
+ for (i = 0; i < mapped_pages; i += PTRS_PER_PTE) {
+ pgd_t pgd;
+ pgd = __pgd((phys_linear + i * sizeof(pte_t)) |
+ (_PAGE_PRESENT | _PAGE_RW | _PAGE_USER));
+
+ if (copy_to_user(&pgdir[i / PTRS_PER_PTE], &pgd, sizeof(pgd))
+ || copy_to_user(&pgdir[pgd_index(PAGE_OFFSET)
+ + i / PTRS_PER_PTE],
+ &pgd, sizeof(pgd)))
+ return -EFAULT;
+ }
+
+ /* We return the top level (guest-physical) address: remember where
+ * this is. */
+ return (unsigned long)pgdir - mem_base;
+}
+
/*H:500 (vii) Setting up the page tables initially.
*
* When a Guest is first created, the Launcher tells us where the toplevel of
* its first page table is. We set some things up here: */
-int init_guest_pagetable(struct lguest *lg, unsigned long pgtable)
+int init_guest_pagetable(struct lguest *lg)
{
+ u64 mem;
+ u32 initrd_size;
+ struct boot_params __user *boot = (struct boot_params *)lg->mem_base;
+
+ /* Get the Guest memory size and the ramdisk size from the boot header
+ * located at lg->mem_base (Guest address 0). */
+ if (copy_from_user(&mem, &boot->e820_map[0].size, sizeof(mem))
+ || get_user(initrd_size, &boot->hdr.ramdisk_size))
+ return -EFAULT;
+
/* We start on the first shadow page table, and give it a blank PGD
* page. */
- lg->pgdirs[0].gpgdir = pgtable;
+ lg->pgdirs[0].gpgdir = setup_pagetables(lg, mem, initrd_size);
+ if (IS_ERR_VALUE(lg->pgdirs[0].gpgdir))
+ return lg->pgdirs[0].gpgdir;
lg->pgdirs[0].pgdir = (pgd_t *)get_zeroed_page(GFP_KERNEL);
if (!lg->pgdirs[0].pgdir)
return -ENOMEM;
diff --git a/drivers/s390/kvm/kvm_virtio.c b/drivers/s390/kvm/kvm_virtio.c
index 3d442444c61..28c90b89f2b 100644
--- a/drivers/s390/kvm/kvm_virtio.c
+++ b/drivers/s390/kvm/kvm_virtio.c
@@ -188,11 +188,13 @@ static struct virtqueue *kvm_find_vq(struct virtio_device *vdev,
config = kvm_vq_config(kdev->desc)+index;
err = vmem_add_mapping(config->address,
- vring_size(config->num, PAGE_SIZE));
+ vring_size(config->num,
+ KVM_S390_VIRTIO_RING_ALIGN));
if (err)
goto out;
- vq = vring_new_virtqueue(config->num, vdev, (void *) config->address,
+ vq = vring_new_virtqueue(config->num, KVM_S390_VIRTIO_RING_ALIGN,
+ vdev, (void *) config->address,
kvm_notify, callback);
if (!vq) {
err = -ENOMEM;
@@ -209,7 +211,8 @@ static struct virtqueue *kvm_find_vq(struct virtio_device *vdev,
return vq;
unmap:
vmem_remove_mapping(config->address,
- vring_size(config->num, PAGE_SIZE));
+ vring_size(config->num,
+ KVM_S390_VIRTIO_RING_ALIGN));
out:
return ERR_PTR(err);
}
@@ -220,7 +223,8 @@ static void kvm_del_vq(struct virtqueue *vq)
vring_del_virtqueue(vq);
vmem_remove_mapping(config->address,
- vring_size(config->num, PAGE_SIZE));
+ vring_size(config->num,
+ KVM_S390_VIRTIO_RING_ALIGN));
}
/*
@@ -295,13 +299,29 @@ static void scan_devices(void)
*/
static void kvm_extint_handler(u16 code)
{
- void *data = (void *) *(long *) __LC_PFAULT_INTPARM;
- u16 subcode = S390_lowcore.cpu_addr;
+ struct virtqueue *vq;
+ u16 subcode;
+ int config_changed;
+ subcode = S390_lowcore.cpu_addr;
if ((subcode & 0xff00) != VIRTIO_SUBCODE_64)
return;
- vring_interrupt(0, data);
+ /* The LSB might be overloaded, we have to mask it */
+ vq = (struct virtqueue *) ((*(long *) __LC_PFAULT_INTPARM) & ~1UL);
+
+ /* We use the LSB of extparam, to decide, if this interrupt is a config
+ * change or a "standard" interrupt */
+ config_changed = (*(int *) __LC_EXT_PARAMS & 1);
+
+ if (config_changed) {
+ struct virtio_driver *drv;
+ drv = container_of(vq->vdev->dev.driver,
+ struct virtio_driver, driver);
+ if (drv->config_changed)
+ drv->config_changed(vq->vdev);
+ } else
+ vring_interrupt(0, vq);
}
/*
diff --git a/drivers/virtio/virtio.c b/drivers/virtio/virtio.c
index 5b78fd0aff0..018c070a357 100644
--- a/drivers/virtio/virtio.c
+++ b/drivers/virtio/virtio.c
@@ -176,7 +176,7 @@ int register_virtio_device(struct virtio_device *dev)
/* Assign a unique device index and hence name. */
dev->index = dev_index++;
- sprintf(dev->dev.bus_id, "virtio%u", dev->index);
+ dev_set_name(&dev->dev, "virtio%u", dev->index);
/* We always start by resetting the device, in case a previous
* driver messed it up. This also tests that code path a little. */
diff --git a/drivers/virtio/virtio_balloon.c b/drivers/virtio/virtio_balloon.c
index 62eab43152d..59268266b79 100644
--- a/drivers/virtio/virtio_balloon.c
+++ b/drivers/virtio/virtio_balloon.c
@@ -56,6 +56,15 @@ static struct virtio_device_id id_table[] = {
{ 0 },
};
+static u32 page_to_balloon_pfn(struct page *page)
+{
+ unsigned long pfn = page_to_pfn(page);
+
+ BUILD_BUG_ON(PAGE_SHIFT < VIRTIO_BALLOON_PFN_SHIFT);
+ /* Convert pfn from Linux page size to balloon page size. */
+ return pfn >> (PAGE_SHIFT - VIRTIO_BALLOON_PFN_SHIFT);
+}
+
static void balloon_ack(struct virtqueue *vq)
{
struct virtio_balloon *vb;
@@ -99,7 +108,7 @@ static void fill_balloon(struct virtio_balloon *vb, size_t num)
msleep(200);
break;
}
- vb->pfns[vb->num_pfns] = page_to_pfn(page);
+ vb->pfns[vb->num_pfns] = page_to_balloon_pfn(page);
totalram_pages--;
vb->num_pages++;
list_add(&page->lru, &vb->pages);
@@ -132,7 +141,7 @@ static void leak_balloon(struct virtio_balloon *vb, size_t num)
for (vb->num_pfns = 0; vb->num_pfns < num; vb->num_pfns++) {
page = list_first_entry(&vb->pages, struct page, lru);
list_del(&page->lru);
- vb->pfns[vb->num_pfns] = page_to_pfn(page);
+ vb->pfns[vb->num_pfns] = page_to_balloon_pfn(page);
vb->num_pages--;
}
diff --git a/drivers/virtio/virtio_pci.c b/drivers/virtio/virtio_pci.c
index c7dc37c7cce..265fdf2d127 100644
--- a/drivers/virtio/virtio_pci.c
+++ b/drivers/virtio/virtio_pci.c
@@ -75,7 +75,7 @@ MODULE_DEVICE_TABLE(pci, virtio_pci_id_table);
* would make more sense for virtio to not insist on having it's own device. */
static struct device virtio_pci_root = {
.parent = NULL,
- .bus_id = "virtio-pci",
+ .init_name = "virtio-pci",
};
/* Convert a generic virtio device to our structure */
@@ -216,7 +216,7 @@ static struct virtqueue *vp_find_vq(struct virtio_device *vdev, unsigned index,
struct virtio_pci_device *vp_dev = to_vp_device(vdev);
struct virtio_pci_vq_info *info;
struct virtqueue *vq;
- unsigned long flags;
+ unsigned long flags, size;
u16 num;
int err;
@@ -237,19 +237,20 @@ static struct virtqueue *vp_find_vq(struct virtio_device *vdev, unsigned index,
info->queue_index = index;
info->num = num;
- info->queue = kzalloc(PAGE_ALIGN(vring_size(num,PAGE_SIZE)), GFP_KERNEL);
+ size = PAGE_ALIGN(vring_size(num, VIRTIO_PCI_VRING_ALIGN));
+ info->queue = alloc_pages_exact(size, GFP_KERNEL|__GFP_ZERO);
if (info->queue == NULL) {
err = -ENOMEM;
goto out_info;
}
/* activate the queue */
- iowrite32(virt_to_phys(info->queue) >> PAGE_SHIFT,
+ iowrite32(virt_to_phys(info->queue) >> VIRTIO_PCI_QUEUE_ADDR_SHIFT,
vp_dev->ioaddr + VIRTIO_PCI_QUEUE_PFN);
/* create the vring */
- vq = vring_new_virtqueue(info->num, vdev, info->queue,
- vp_notify, callback);
+ vq = vring_new_virtqueue(info->num, VIRTIO_PCI_VRING_ALIGN,
+ vdev, info->queue, vp_notify, callback);
if (!vq) {
err = -ENOMEM;
goto out_activate_queue;
@@ -266,7 +267,7 @@ static struct virtqueue *vp_find_vq(struct virtio_device *vdev, unsigned index,
out_activate_queue:
iowrite32(0, vp_dev->ioaddr + VIRTIO_PCI_QUEUE_PFN);
- kfree(info->queue);
+ free_pages_exact(info->queue, size);
out_info:
kfree(info);
return ERR_PTR(err);
@@ -277,7 +278,7 @@ static void vp_del_vq(struct virtqueue *vq)
{
struct virtio_pci_device *vp_dev = to_vp_device(vq->vdev);
struct virtio_pci_vq_info *info = vq->priv;
- unsigned long flags;
+ unsigned long flags, size;
spin_lock_irqsave(&vp_dev->lock, flags);
list_del(&info->node);
@@ -289,7 +290,8 @@ static void vp_del_vq(struct virtqueue *vq)
iowrite16(info->queue_index, vp_dev->ioaddr + VIRTIO_PCI_QUEUE_SEL);
iowrite32(0, vp_dev->ioaddr + VIRTIO_PCI_QUEUE_PFN);
- kfree(info->queue);
+ size = PAGE_ALIGN(vring_size(info->num, VIRTIO_PCI_VRING_ALIGN));
+ free_pages_exact(info->queue, size);
kfree(info);
}
@@ -305,6 +307,20 @@ static struct virtio_config_ops virtio_pci_config_ops = {
.finalize_features = vp_finalize_features,
};
+static void virtio_pci_release_dev(struct device *_d)
+{
+ struct virtio_device *dev = container_of(_d, struct virtio_device, dev);
+ struct virtio_pci_device *vp_dev = to_vp_device(dev);
+ struct pci_dev *pci_dev = vp_dev->pci_dev;
+
+ free_irq(pci_dev->irq, vp_dev);
+ pci_set_drvdata(pci_dev, NULL);
+ pci_iounmap(pci_dev, vp_dev->ioaddr);
+ pci_release_regions(pci_dev);
+ pci_disable_device(pci_dev);
+ kfree(vp_dev);
+}
+
/* the PCI probing function */
static int __devinit virtio_pci_probe(struct pci_dev *pci_dev,
const struct pci_device_id *id)
@@ -328,6 +344,7 @@ static int __devinit virtio_pci_probe(struct pci_dev *pci_dev,
return -ENOMEM;
vp_dev->vdev.dev.parent = &virtio_pci_root;
+ vp_dev->vdev.dev.release = virtio_pci_release_dev;
vp_dev->vdev.config = &virtio_pci_config_ops;
vp_dev->pci_dev = pci_dev;
INIT_LIST_HEAD(&vp_dev->virtqueues);
@@ -357,7 +374,7 @@ static int __devinit virtio_pci_probe(struct pci_dev *pci_dev,
/* register a handler for the queue with the PCI device's interrupt */
err = request_irq(vp_dev->pci_dev->irq, vp_interrupt, IRQF_SHARED,
- vp_dev->vdev.dev.bus_id, vp_dev);
+ dev_name(&vp_dev->vdev.dev), vp_dev);
if (err)
goto out_set_drvdata;
@@ -387,12 +404,6 @@ static void __devexit virtio_pci_remove(struct pci_dev *pci_dev)
struct virtio_pci_device *vp_dev = pci_get_drvdata(pci_dev);
unregister_virtio_device(&vp_dev->vdev);
- free_irq(pci_dev->irq, vp_dev);
- pci_set_drvdata(pci_dev, NULL);
- pci_iounmap(pci_dev, vp_dev->ioaddr);
- pci_release_regions(pci_dev);
- pci_disable_device(pci_dev);
- kfree(vp_dev);
}
#ifdef CONFIG_PM
diff --git a/drivers/virtio/virtio_ring.c b/drivers/virtio/virtio_ring.c
index 6eb5303fed1..5777196bf6c 100644
--- a/drivers/virtio/virtio_ring.c
+++ b/drivers/virtio/virtio_ring.c
@@ -274,6 +274,7 @@ static struct virtqueue_ops vring_vq_ops = {
};
struct virtqueue *vring_new_virtqueue(unsigned int num,
+ unsigned int vring_align,
struct virtio_device *vdev,
void *pages,
void (*notify)(struct virtqueue *),
@@ -292,7 +293,7 @@ struct virtqueue *vring_new_virtqueue(unsigned int num,
if (!vq)
return NULL;
- vring_init(&vq->vring, num, pages, PAGE_SIZE);
+ vring_init(&vq->vring, num, pages, vring_align);
vq->vq.callback = callback;
vq->vq.vdev = vdev;
vq->vq.vq_ops = &vring_vq_ops;
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-21 11:38:42 +0000