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-rw-r--r--drivers/pci/access.c14
-rw-r--r--drivers/pci/pci-sysfs.c2
-rw-r--r--drivers/pci/pci.h2
-rw-r--r--drivers/pci/quirks.c42
4 files changed, 48 insertions, 12 deletions
diff --git a/drivers/pci/access.c b/drivers/pci/access.c
index ec8f7002b09..39bb96b413e 100644
--- a/drivers/pci/access.c
+++ b/drivers/pci/access.c
@@ -178,8 +178,7 @@ static int pci_vpd_pci22_read(struct pci_dev *dev, int pos, int size,
int ret;
int begin, end, i;
- if (pos < 0 || pos > PCI_VPD_PCI22_SIZE ||
- size > PCI_VPD_PCI22_SIZE - pos)
+ if (pos < 0 || pos > vpd->base.len || size > vpd->base.len - pos)
return -EINVAL;
if (size == 0)
return 0;
@@ -223,8 +222,8 @@ static int pci_vpd_pci22_write(struct pci_dev *dev, int pos, int size,
u32 val;
int ret;
- if (pos < 0 || pos > PCI_VPD_PCI22_SIZE || pos & 3 ||
- size > PCI_VPD_PCI22_SIZE - pos || size < 4)
+ if (pos < 0 || pos > vpd->base.len || pos & 3 ||
+ size > vpd->base.len - pos || size < 4)
return -EINVAL;
val = (u8) *buf++;
@@ -255,11 +254,6 @@ out:
return 4;
}
-static int pci_vpd_pci22_get_size(struct pci_dev *dev)
-{
- return PCI_VPD_PCI22_SIZE;
-}
-
static void pci_vpd_pci22_release(struct pci_dev *dev)
{
kfree(container_of(dev->vpd, struct pci_vpd_pci22, base));
@@ -268,7 +262,6 @@ static void pci_vpd_pci22_release(struct pci_dev *dev)
static struct pci_vpd_ops pci_vpd_pci22_ops = {
.read = pci_vpd_pci22_read,
.write = pci_vpd_pci22_write,
- .get_size = pci_vpd_pci22_get_size,
.release = pci_vpd_pci22_release,
};
@@ -284,6 +277,7 @@ int pci_vpd_pci22_init(struct pci_dev *dev)
if (!vpd)
return -ENOMEM;
+ vpd->base.len = PCI_VPD_PCI22_SIZE;
vpd->base.ops = &pci_vpd_pci22_ops;
spin_lock_init(&vpd->lock);
vpd->cap = cap;
diff --git a/drivers/pci/pci-sysfs.c b/drivers/pci/pci-sysfs.c
index 1f855f028e9..9c718583a23 100644
--- a/drivers/pci/pci-sysfs.c
+++ b/drivers/pci/pci-sysfs.c
@@ -736,7 +736,7 @@ int __must_check pci_create_sysfs_dev_files (struct pci_dev *pdev)
attr = kzalloc(sizeof(*attr), GFP_ATOMIC);
if (attr) {
pdev->vpd->attr = attr;
- attr->size = pdev->vpd->ops->get_size(pdev);
+ attr->size = pdev->vpd->len;
attr->attr.name = "vpd";
attr->attr.mode = S_IRUSR | S_IWUSR;
attr->read = pci_read_vpd;
diff --git a/drivers/pci/pci.h b/drivers/pci/pci.h
index 0a497c1b422..00408c97e5f 100644
--- a/drivers/pci/pci.h
+++ b/drivers/pci/pci.h
@@ -21,11 +21,11 @@ extern int pci_user_write_config_dword(struct pci_dev *dev, int where, u32 val);
struct pci_vpd_ops {
int (*read)(struct pci_dev *dev, int pos, int size, char *buf);
int (*write)(struct pci_dev *dev, int pos, int size, const char *buf);
- int (*get_size)(struct pci_dev *dev);
void (*release)(struct pci_dev *dev);
};
struct pci_vpd {
+ unsigned int len;
struct pci_vpd_ops *ops;
struct bin_attribute *attr; /* descriptor for sysfs VPD entry */
};
diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
index dabb563f51d..a3497dc6ebc 100644
--- a/drivers/pci/quirks.c
+++ b/drivers/pci/quirks.c
@@ -1670,6 +1670,48 @@ static void __devinit quirk_via_cx700_pci_parking_caching(struct pci_dev *dev)
}
DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_VIA, 0x324e, quirk_via_cx700_pci_parking_caching);
+/*
+ * For Broadcom 5706, 5708, 5709 rev. A nics, any read beyond the
+ * VPD end tag will hang the device. This problem was initially
+ * observed when a vpd entry was created in sysfs
+ * ('/sys/bus/pci/devices/<id>/vpd'). A read to this sysfs entry
+ * will dump 32k of data. Reading a full 32k will cause an access
+ * beyond the VPD end tag causing the device to hang. Once the device
+ * is hung, the bnx2 driver will not be able to reset the device.
+ * We believe that it is legal to read beyond the end tag and
+ * therefore the solution is to limit the read/write length.
+ */
+static void __devinit quirk_brcm_570x_limit_vpd(struct pci_dev *dev)
+{
+ /* Only disable the VPD capability for 5706, 5708, and 5709 rev. A */
+ if ((dev->device == PCI_DEVICE_ID_NX2_5706) ||
+ (dev->device == PCI_DEVICE_ID_NX2_5708) ||
+ ((dev->device == PCI_DEVICE_ID_NX2_5709) &&
+ (dev->revision & 0xf0) == 0x0)) {
+ if (dev->vpd)
+ dev->vpd->len = 0x80;
+ }
+}
+
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_BROADCOM,
+ PCI_DEVICE_ID_NX2_5706,
+ quirk_brcm_570x_limit_vpd);
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_BROADCOM,
+ PCI_DEVICE_ID_NX2_5706S,
+ quirk_brcm_570x_limit_vpd);
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_BROADCOM,
+ PCI_DEVICE_ID_NX2_5708,
+ quirk_brcm_570x_limit_vpd);
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_BROADCOM,
+ PCI_DEVICE_ID_NX2_5708S,
+ quirk_brcm_570x_limit_vpd);
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_BROADCOM,
+ PCI_DEVICE_ID_NX2_5709,
+ quirk_brcm_570x_limit_vpd);
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_BROADCOM,
+ PCI_DEVICE_ID_NX2_5709S,
+ quirk_brcm_570x_limit_vpd);
+
#ifdef CONFIG_PCI_MSI
/* Some chipsets do not support MSI. We cannot easily rely on setting
* PCI_BUS_FLAGS_NO_MSI in its bus flags because there are actually