aboutsummaryrefslogtreecommitdiff
path: root/drivers/pci
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@linux-foundation.org>2010-05-21 18:58:52 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2010-05-21 18:58:52 -0700
commit6109e2ce2600e2db26cd0424bb9c6ed019723288 (patch)
tree54b5d347bf12e0a987edfb52f287399f748a9a38 /drivers/pci
parent0961d6581c870850342ad6ea25263763433d666f (diff)
parentac81860ea073daed50246af54db706c6e491f240 (diff)
Merge branch 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6
* 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6: (36 commits) PCI: hotplug: pciehp: Removed check for hotplug of display devices PCI: read memory ranges out of Broadcom CNB20LE host bridge PCI: Allow manual resource allocation for PCI hotplug bridges x86/PCI: make ACPI MCFG reserved error messages ACPI specific PCI hotplug: Use kmemdup PM/PCI: Update PCI power management documentation PCI: output FW warning in pci_read/write_vpd PCI: fix typos pci_device_dis/enable to pci_dis/enable_device in comments PCI quirks: disable msi on AMD rs4xx internal gfx bridges PCI: Disable MSI for MCP55 on P5N32-E SLI x86/PCI: irq and pci_ids patch for additional Intel Cougar Point DeviceIDs PCI: aerdrv: trivial cleanup for aerdrv_core.c PCI: aerdrv: trivial cleanup for aerdrv.c PCI: aerdrv: introduce default_downstream_reset_link PCI: aerdrv: rework find_aer_service PCI: aerdrv: remove is_downstream PCI: aerdrv: remove magical ROOT_ERR_STATUS_MASKS PCI: aerdrv: redefine PCI_ERR_ROOT_*_SRC PCI: aerdrv: rework do_recovery PCI: aerdrv: rework get_e_source() ...
Diffstat (limited to 'drivers/pci')
-rw-r--r--drivers/pci/Kconfig2
-rw-r--r--drivers/pci/access.c41
-rw-r--r--drivers/pci/hotplug/cpqphp_core.c3
-rw-r--r--drivers/pci/hotplug/pciehp_pci.c17
-rw-r--r--drivers/pci/pci-sysfs.c44
-rw-r--r--drivers/pci/pci.c4
-rw-r--r--drivers/pci/pcie/aer/aer_inject.c2
-rw-r--r--drivers/pci/pcie/aer/aerdrv.c179
-rw-r--r--drivers/pci/pcie/aer/aerdrv.h6
-rw-r--r--drivers/pci/pcie/aer/aerdrv_core.c558
-rw-r--r--drivers/pci/quirks.c21
-rw-r--r--drivers/pci/slot.c48
12 files changed, 508 insertions, 417 deletions
diff --git a/drivers/pci/Kconfig b/drivers/pci/Kconfig
index 7858a117e80..34ef70d562b 100644
--- a/drivers/pci/Kconfig
+++ b/drivers/pci/Kconfig
@@ -19,7 +19,7 @@ config PCI_MSI
by using the 'pci=nomsi' option. This disables MSI for the
entire system.
- If you don't know what to do here, say N.
+ If you don't know what to do here, say Y.
config PCI_DEBUG
bool "PCI Debugging"
diff --git a/drivers/pci/access.c b/drivers/pci/access.c
index 2f646fe1260..531bc697d80 100644
--- a/drivers/pci/access.c
+++ b/drivers/pci/access.c
@@ -13,7 +13,7 @@
* configuration space.
*/
-static DEFINE_SPINLOCK(pci_lock);
+static DEFINE_RAW_SPINLOCK(pci_lock);
/*
* Wrappers for all PCI configuration access functions. They just check
@@ -33,10 +33,10 @@ int pci_bus_read_config_##size \
unsigned long flags; \
u32 data = 0; \
if (PCI_##size##_BAD) return PCIBIOS_BAD_REGISTER_NUMBER; \
- spin_lock_irqsave(&pci_lock, flags); \
+ raw_spin_lock_irqsave(&pci_lock, flags); \
res = bus->ops->read(bus, devfn, pos, len, &data); \
*value = (type)data; \
- spin_unlock_irqrestore(&pci_lock, flags); \
+ raw_spin_unlock_irqrestore(&pci_lock, flags); \
return res; \
}
@@ -47,9 +47,9 @@ int pci_bus_write_config_##size \
int res; \
unsigned long flags; \
if (PCI_##size##_BAD) return PCIBIOS_BAD_REGISTER_NUMBER; \
- spin_lock_irqsave(&pci_lock, flags); \
+ raw_spin_lock_irqsave(&pci_lock, flags); \
res = bus->ops->write(bus, devfn, pos, len, value); \
- spin_unlock_irqrestore(&pci_lock, flags); \
+ raw_spin_unlock_irqrestore(&pci_lock, flags); \
return res; \
}
@@ -79,10 +79,10 @@ struct pci_ops *pci_bus_set_ops(struct pci_bus *bus, struct pci_ops *ops)
struct pci_ops *old_ops;
unsigned long flags;
- spin_lock_irqsave(&pci_lock, flags);
+ raw_spin_lock_irqsave(&pci_lock, flags);
old_ops = bus->ops;
bus->ops = ops;
- spin_unlock_irqrestore(&pci_lock, flags);
+ raw_spin_unlock_irqrestore(&pci_lock, flags);
return old_ops;
}
EXPORT_SYMBOL(pci_bus_set_ops);
@@ -136,9 +136,9 @@ static noinline void pci_wait_ucfg(struct pci_dev *dev)
__add_wait_queue(&pci_ucfg_wait, &wait);
do {
set_current_state(TASK_UNINTERRUPTIBLE);
- spin_unlock_irq(&pci_lock);
+ raw_spin_unlock_irq(&pci_lock);
schedule();
- spin_lock_irq(&pci_lock);
+ raw_spin_lock_irq(&pci_lock);
} while (dev->block_ucfg_access);
__remove_wait_queue(&pci_ucfg_wait, &wait);
}
@@ -150,11 +150,11 @@ int pci_user_read_config_##size \
int ret = 0; \
u32 data = -1; \
if (PCI_##size##_BAD) return PCIBIOS_BAD_REGISTER_NUMBER; \
- spin_lock_irq(&pci_lock); \
+ raw_spin_lock_irq(&pci_lock); \
if (unlikely(dev->block_ucfg_access)) pci_wait_ucfg(dev); \
ret = dev->bus->ops->read(dev->bus, dev->devfn, \
pos, sizeof(type), &data); \
- spin_unlock_irq(&pci_lock); \
+ raw_spin_unlock_irq(&pci_lock); \
*val = (type)data; \
return ret; \
}
@@ -165,11 +165,11 @@ int pci_user_write_config_##size \
{ \
int ret = -EIO; \
if (PCI_##size##_BAD) return PCIBIOS_BAD_REGISTER_NUMBER; \
- spin_lock_irq(&pci_lock); \
+ raw_spin_lock_irq(&pci_lock); \
if (unlikely(dev->block_ucfg_access)) pci_wait_ucfg(dev); \
ret = dev->bus->ops->write(dev->bus, dev->devfn, \
pos, sizeof(type), val); \
- spin_unlock_irq(&pci_lock); \
+ raw_spin_unlock_irq(&pci_lock); \
return ret; \
}
@@ -220,8 +220,13 @@ static int pci_vpd_pci22_wait(struct pci_dev *dev)
return 0;
}
- if (time_after(jiffies, timeout))
+ if (time_after(jiffies, timeout)) {
+ dev_printk(KERN_DEBUG, &dev->dev,
+ "vpd r/w failed. This is likely a firmware "
+ "bug on this device. Contact the card "
+ "vendor for a firmware update.");
return -ETIMEDOUT;
+ }
if (fatal_signal_pending(current))
return -EINTR;
if (!cond_resched())
@@ -396,10 +401,10 @@ void pci_block_user_cfg_access(struct pci_dev *dev)
unsigned long flags;
int was_blocked;
- spin_lock_irqsave(&pci_lock, flags);
+ raw_spin_lock_irqsave(&pci_lock, flags);
was_blocked = dev->block_ucfg_access;
dev->block_ucfg_access = 1;
- spin_unlock_irqrestore(&pci_lock, flags);
+ raw_spin_unlock_irqrestore(&pci_lock, flags);
/* If we BUG() inside the pci_lock, we're guaranteed to hose
* the machine */
@@ -417,7 +422,7 @@ void pci_unblock_user_cfg_access(struct pci_dev *dev)
{
unsigned long flags;
- spin_lock_irqsave(&pci_lock, flags);
+ raw_spin_lock_irqsave(&pci_lock, flags);
/* This indicates a problem in the caller, but we don't need
* to kill them, unlike a double-block above. */
@@ -425,6 +430,6 @@ void pci_unblock_user_cfg_access(struct pci_dev *dev)
dev->block_ucfg_access = 0;
wake_up_all(&pci_ucfg_wait);
- spin_unlock_irqrestore(&pci_lock, flags);
+ raw_spin_unlock_irqrestore(&pci_lock, flags);
}
EXPORT_SYMBOL_GPL(pci_unblock_user_cfg_access);
diff --git a/drivers/pci/hotplug/cpqphp_core.c b/drivers/pci/hotplug/cpqphp_core.c
index 6644337d63d..b3e5580c837 100644
--- a/drivers/pci/hotplug/cpqphp_core.c
+++ b/drivers/pci/hotplug/cpqphp_core.c
@@ -1075,13 +1075,12 @@ static int cpqhpc_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
/* make our own copy of the pci bus structure,
* as we like tweaking it a lot */
- ctrl->pci_bus = kmalloc(sizeof(*ctrl->pci_bus), GFP_KERNEL);
+ ctrl->pci_bus = kmemdup(pdev->bus, sizeof(*ctrl->pci_bus), GFP_KERNEL);
if (!ctrl->pci_bus) {
err("out of memory\n");
rc = -ENOMEM;
goto err_free_ctrl;
}
- memcpy(ctrl->pci_bus, pdev->bus, sizeof(*ctrl->pci_bus));
ctrl->bus = pdev->bus->number;
ctrl->rev = pdev->revision;
diff --git a/drivers/pci/hotplug/pciehp_pci.c b/drivers/pci/hotplug/pciehp_pci.c
index 0a16444c14c..2fce726758d 100644
--- a/drivers/pci/hotplug/pciehp_pci.c
+++ b/drivers/pci/hotplug/pciehp_pci.c
@@ -84,12 +84,6 @@ int pciehp_configure_device(struct slot *p_slot)
dev = pci_get_slot(parent, PCI_DEVFN(0, fn));
if (!dev)
continue;
- if ((dev->class >> 16) == PCI_BASE_CLASS_DISPLAY) {
- ctrl_err(ctrl, "Cannot hot-add display device %s\n",
- pci_name(dev));
- pci_dev_put(dev);
- continue;
- }
if ((dev->hdr_type == PCI_HEADER_TYPE_BRIDGE) ||
(dev->hdr_type == PCI_HEADER_TYPE_CARDBUS)) {
pciehp_add_bridge(dev);
@@ -133,15 +127,9 @@ int pciehp_unconfigure_device(struct slot *p_slot)
presence = 0;
for (j = 0; j < 8; j++) {
- struct pci_dev* temp = pci_get_slot(parent, PCI_DEVFN(0, j));
+ struct pci_dev *temp = pci_get_slot(parent, PCI_DEVFN(0, j));
if (!temp)
continue;
- if ((temp->class >> 16) == PCI_BASE_CLASS_DISPLAY) {
- ctrl_err(ctrl, "Cannot remove display device %s\n",
- pci_name(temp));
- pci_dev_put(temp);
- continue;
- }
if (temp->hdr_type == PCI_HEADER_TYPE_BRIDGE && presence) {
pci_read_config_byte(temp, PCI_BRIDGE_CONTROL, &bctl);
if (bctl & PCI_BRIDGE_CTL_VGA) {
@@ -149,7 +137,8 @@ int pciehp_unconfigure_device(struct slot *p_slot)
"Cannot remove display device %s\n",
pci_name(temp));
pci_dev_put(temp);
- continue;
+ rc = EINVAL;
+ break;
}
}
pci_remove_bus_device(temp);
diff --git a/drivers/pci/pci-sysfs.c b/drivers/pci/pci-sysfs.c
index 6309c5a2528..afd2fbf7d79 100644
--- a/drivers/pci/pci-sysfs.c
+++ b/drivers/pci/pci-sysfs.c
@@ -979,7 +979,12 @@ static ssize_t reset_store(struct device *dev,
if (val != 1)
return -EINVAL;
- return pci_reset_function(pdev);
+
+ result = pci_reset_function(pdev);
+ if (result < 0)
+ return result;
+
+ return count;
}
static struct device_attribute reset_attr = __ATTR(reset, 0200, NULL, reset_store);
@@ -1030,6 +1035,39 @@ error:
return retval;
}
+static void pci_remove_slot_links(struct pci_dev *dev)
+{
+ char func[10];
+ struct pci_slot *slot;
+
+ sysfs_remove_link(&dev->dev.kobj, "slot");
+ list_for_each_entry(slot, &dev->bus->slots, list) {
+ if (slot->number != PCI_SLOT(dev->devfn))
+ continue;
+ snprintf(func, 10, "function%d", PCI_FUNC(dev->devfn));
+ sysfs_remove_link(&slot->kobj, func);
+ }
+}
+
+static int pci_create_slot_links(struct pci_dev *dev)
+{
+ int result = 0;
+ char func[10];
+ struct pci_slot *slot;
+
+ list_for_each_entry(slot, &dev->bus->slots, list) {
+ if (slot->number != PCI_SLOT(dev->devfn))
+ continue;
+ result = sysfs_create_link(&dev->dev.kobj, &slot->kobj, "slot");
+ if (result)
+ goto out;
+ snprintf(func, 10, "function%d", PCI_FUNC(dev->devfn));
+ result = sysfs_create_link(&slot->kobj, &dev->dev.kobj, func);
+ }
+out:
+ return result;
+}
+
int __must_check pci_create_sysfs_dev_files (struct pci_dev *pdev)
{
int retval;
@@ -1092,6 +1130,8 @@ int __must_check pci_create_sysfs_dev_files (struct pci_dev *pdev)
if (retval)
goto err_vga_file;
+ pci_create_slot_links(pdev);
+
return 0;
err_vga_file:
@@ -1141,6 +1181,8 @@ void pci_remove_sysfs_dev_files(struct pci_dev *pdev)
if (!sysfs_initialized)
return;
+ pci_remove_slot_links(pdev);
+
pci_remove_capabilities_sysfs(pdev);
if (pdev->cfg_size < PCI_CFG_SPACE_EXP_SIZE)
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index 1df7c508814..60f30e7f1c8 100644
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -1193,7 +1193,7 @@ void pci_disable_enabled_device(struct pci_dev *dev)
* anymore. This only involves disabling PCI bus-mastering, if active.
*
* Note we don't actually disable the device until all callers of
- * pci_device_enable() have called pci_device_disable().
+ * pci_enable_device() have called pci_disable_device().
*/
void
pci_disable_device(struct pci_dev *dev)
@@ -1631,7 +1631,6 @@ void pci_pm_init(struct pci_dev *dev)
* let the user space enable it to wake up the system as needed.
*/
device_set_wakeup_capable(&dev->dev, true);
- device_set_wakeup_enable(&dev->dev, false);
/* Disable the PME# generation functionality */
pci_pme_active(dev, false);
} else {
@@ -1655,7 +1654,6 @@ void platform_pci_wakeup_init(struct pci_dev *dev)
return;
device_set_wakeup_capable(&dev->dev, true);
- device_set_wakeup_enable(&dev->dev, false);
platform_pci_sleep_wake(dev, false);
}
diff --git a/drivers/pci/pcie/aer/aer_inject.c b/drivers/pci/pcie/aer/aer_inject.c
index f8f425b8731..909924692b8 100644
--- a/drivers/pci/pcie/aer/aer_inject.c
+++ b/drivers/pci/pcie/aer/aer_inject.c
@@ -168,7 +168,7 @@ static u32 *find_pci_config_dword(struct aer_error *err, int where,
target = &err->root_status;
rw1cs = 1;
break;
- case PCI_ERR_ROOT_COR_SRC:
+ case PCI_ERR_ROOT_ERR_SRC:
target = &err->source_id;
break;
}
diff --git a/drivers/pci/pcie/aer/aerdrv.c b/drivers/pci/pcie/aer/aerdrv.c
index 7a711ee314b..484cc55194b 100644
--- a/drivers/pci/pcie/aer/aerdrv.c
+++ b/drivers/pci/pcie/aer/aerdrv.c
@@ -72,13 +72,120 @@ void pci_no_aer(void)
pcie_aer_disable = 1; /* has priority over 'forceload' */
}
+static int set_device_error_reporting(struct pci_dev *dev, void *data)
+{
+ bool enable = *((bool *)data);
+
+ if ((dev->pcie_type == PCI_EXP_TYPE_ROOT_PORT) ||
+ (dev->pcie_type == PCI_EXP_TYPE_UPSTREAM) ||
+ (dev->pcie_type == PCI_EXP_TYPE_DOWNSTREAM)) {
+ if (enable)
+ pci_enable_pcie_error_reporting(dev);
+ else
+ pci_disable_pcie_error_reporting(dev);
+ }
+
+ if (enable)
+ pcie_set_ecrc_checking(dev);
+
+ return 0;
+}
+
+/**
+ * set_downstream_devices_error_reporting - enable/disable the error reporting bits on the root port and its downstream ports.
+ * @dev: pointer to root port's pci_dev data structure
+ * @enable: true = enable error reporting, false = disable error reporting.
+ */
+static void set_downstream_devices_error_reporting(struct pci_dev *dev,
+ bool enable)
+{
+ set_device_error_reporting(dev, &enable);
+
+ if (!dev->subordinate)
+ return;
+ pci_walk_bus(dev->subordinate, set_device_error_reporting, &enable);
+}
+
+/**
+ * aer_enable_rootport - enable Root Port's interrupts when receiving messages
+ * @rpc: pointer to a Root Port data structure
+ *
+ * Invoked when PCIe bus loads AER service driver.
+ */
+static void aer_enable_rootport(struct aer_rpc *rpc)
+{
+ struct pci_dev *pdev = rpc->rpd->port;
+ int pos, aer_pos;
+ u16 reg16;
+ u32 reg32;
+
+ pos = pci_pcie_cap(pdev);
+ /* Clear PCIe Capability's Device Status */
+ pci_read_config_word(pdev, pos+PCI_EXP_DEVSTA, &reg16);
+ pci_write_config_word(pdev, pos+PCI_EXP_DEVSTA, reg16);
+
+ /* Disable system error generation in response to error messages */
+ pci_read_config_word(pdev, pos + PCI_EXP_RTCTL, &reg16);
+ reg16 &= ~(SYSTEM_ERROR_INTR_ON_MESG_MASK);
+ pci_write_config_word(pdev, pos + PCI_EXP_RTCTL, reg16);
+
+ aer_pos = pci_find_ext_capability(pdev, PCI_EXT_CAP_ID_ERR);
+ /* Clear error status */
+ pci_read_config_dword(pdev, aer_pos + PCI_ERR_ROOT_STATUS, &reg32);
+ pci_write_config_dword(pdev, aer_pos + PCI_ERR_ROOT_STATUS, reg32);
+ pci_read_config_dword(pdev, aer_pos + PCI_ERR_COR_STATUS, &reg32);
+ pci_write_config_dword(pdev, aer_pos + PCI_ERR_COR_STATUS, reg32);
+ pci_read_config_dword(pdev, aer_pos + PCI_ERR_UNCOR_STATUS, &reg32);
+ pci_write_config_dword(pdev, aer_pos + PCI_ERR_UNCOR_STATUS, reg32);
+
+ /*
+ * Enable error reporting for the root port device and downstream port
+ * devices.
+ */
+ set_downstream_devices_error_reporting(pdev, true);
+
+ /* Enable Root Port's interrupt in response to error messages */
+ pci_read_config_dword(pdev, aer_pos + PCI_ERR_ROOT_COMMAND, &reg32);
+ reg32 |= ROOT_PORT_INTR_ON_MESG_MASK;
+ pci_write_config_dword(pdev, aer_pos + PCI_ERR_ROOT_COMMAND, reg32);
+}
+
+/**
+ * aer_disable_rootport - disable Root Port's interrupts when receiving messages
+ * @rpc: pointer to a Root Port data structure
+ *
+ * Invoked when PCIe bus unloads AER service driver.
+ */
+static void aer_disable_rootport(struct aer_rpc *rpc)
+{
+ struct pci_dev *pdev = rpc->rpd->port;
+ u32 reg32;
+ int pos;
+
+ /*
+ * Disable error reporting for the root port device and downstream port
+ * devices.
+ */
+ set_downstream_devices_error_reporting(pdev, false);
+
+ pos = pci_find_ext_capability(pdev, PCI_EXT_CAP_ID_ERR);
+ /* Disable Root's interrupt in response to error messages */
+ pci_read_config_dword(pdev, pos + PCI_ERR_ROOT_COMMAND, &reg32);
+ reg32 &= ~ROOT_PORT_INTR_ON_MESG_MASK;
+ pci_write_config_dword(pdev, pos + PCI_ERR_ROOT_COMMAND, reg32);
+
+ /* Clear Root's error status reg */
+ pci_read_config_dword(pdev, pos + PCI_ERR_ROOT_STATUS, &reg32);
+ pci_write_config_dword(pdev, pos + PCI_ERR_ROOT_STATUS, reg32);
+}
+
/**
* aer_irq - Root Port's ISR
* @irq: IRQ assigned to Root Port
* @context: pointer to Root Port data structure
*
* Invoked when Root Port detects AER messages.
- **/
+ */
irqreturn_t aer_irq(int irq, void *context)
{
unsigned int status, id;
@@ -97,13 +204,13 @@ irqreturn_t aer_irq(int irq, void *context)
/* Read error status */
pci_read_config_dword(pdev->port, pos + PCI_ERR_ROOT_STATUS, &status);
- if (!(status & ROOT_ERR_STATUS_MASKS)) {
+ if (!(status & (PCI_ERR_ROOT_UNCOR_RCV|PCI_ERR_ROOT_COR_RCV))) {
spin_unlock_irqrestore(&rpc->e_lock, flags);
return IRQ_NONE;
}
/* Read error source and clear error status */
- pci_read_config_dword(pdev->port, pos + PCI_ERR_ROOT_COR_SRC, &id);
+ pci_read_config_dword(pdev->port, pos + PCI_ERR_ROOT_ERR_SRC, &id);
pci_write_config_dword(pdev->port, pos + PCI_ERR_ROOT_STATUS, status);
/* Store error source for later DPC handler */
@@ -135,7 +242,7 @@ EXPORT_SYMBOL_GPL(aer_irq);
* @dev: pointer to the pcie_dev data structure
*
* Invoked when Root Port's AER service is loaded.
- **/
+ */
static struct aer_rpc *aer_alloc_rpc(struct pcie_device *dev)
{
struct aer_rpc *rpc;
@@ -144,15 +251,11 @@ static struct aer_rpc *aer_alloc_rpc(struct pcie_device *dev)
if (!rpc)
return NULL;
- /*
- * Initialize Root lock access, e_lock, to Root Error Status Reg,
- * Root Error ID Reg, and Root error producer/consumer index.
- */
+ /* Initialize Root lock access, e_lock, to Root Error Status Reg */
spin_lock_init(&rpc->e_lock);
rpc->rpd = dev;
INIT_WORK(&rpc->dpc_handler, aer_isr);
- rpc->prod_idx = rpc->cons_idx = 0;
mutex_init(&rpc->rpc_mutex);
init_waitqueue_head(&rpc->wait_release);
@@ -167,7 +270,7 @@ static struct aer_rpc *aer_alloc_rpc(struct pcie_device *dev)
* @dev: pointer to the pcie_dev data structure
*
* Invoked when PCI Express bus unloads or AER probe fails.
- **/
+ */
static void aer_remove(struct pcie_device *dev)
{
struct aer_rpc *rpc = get_service_data(dev);
@@ -179,7 +282,8 @@ static void aer_remove(struct pcie_device *dev)
wait_event(rpc->wait_release, rpc->prod_idx == rpc->cons_idx);
- aer_delete_rootport(rpc);
+ aer_disable_rootport(rpc);
+ kfree(rpc);
set_service_data(dev, NULL);
}
}
@@ -190,7 +294,7 @@ static void aer_remove(struct pcie_device *dev)
* @id: pointer to the service id data structure
*
* Invoked when PCI Express bus loads AER service driver.
- **/
+ */
static int __devinit aer_probe(struct pcie_device *dev)
{
int status;
@@ -230,47 +334,30 @@ static int __devinit aer_probe(struct pcie_device *dev)
* @dev: pointer to Root Port's pci_dev data structure
*
* Invoked by Port Bus driver when performing link reset at Root Port.
- **/
+ */
static pci_ers_result_t aer_root_reset(struct pci_dev *dev)
{
- u16 p2p_ctrl;
- u32 status;
+ u32 reg32;
int pos;
pos = pci_find_ext_capability(dev, PCI_EXT_CAP_ID_ERR);
/* Disable Root's interrupt in response to error messages */
- pci_write_config_dword(dev, pos + PCI_ERR_ROOT_COMMAND, 0);
-
- /* Assert Secondary Bus Reset */
- pci_read_config_word(dev, PCI_BRIDGE_CONTROL, &p2p_ctrl);
- p2p_ctrl |= PCI_BRIDGE_CTL_BUS_RESET;
- pci_write_config_word(dev, PCI_BRIDGE_CONTROL, p2p_ctrl);
-
- /*
- * we should send hot reset message for 2ms to allow it time to
- * propogate to all downstream ports
- */
- msleep(2);
-
- /* De-assert Secondary Bus Reset */
- p2p_ctrl &= ~PCI_BRIDGE_CTL_BUS_RESET;
- pci_write_config_word(dev, PCI_BRIDGE_CONTROL, p2p_ctrl);
+ pci_read_config_dword(dev, pos + PCI_ERR_ROOT_COMMAND, &reg32);
+ reg32 &= ~ROOT_PORT_INTR_ON_MESG_MASK;
+ pci_write_config_dword(dev, pos + PCI_ERR_ROOT_COMMAND, reg32);
- /*
- * System software must wait for at least 100ms from the end
- * of a reset of one or more device before it is permitted
- * to issue Configuration Requests to those devices.
- */
- msleep(200);
+ aer_do_secondary_bus_reset(dev);
dev_printk(KERN_DEBUG, &dev->dev, "Root Port link has been reset\n");
+ /* Clear Root Error Status */
+ pci_read_config_dword(dev, pos + PCI_ERR_ROOT_STATUS, &reg32);
+ pci_write_config_dword(dev, pos + PCI_ERR_ROOT_STATUS, reg32);
+
/* Enable Root Port's interrupt in response to error messages */
- pci_read_config_dword(dev, pos + PCI_ERR_ROOT_STATUS, &status);
- pci_write_config_dword(dev, pos + PCI_ERR_ROOT_STATUS, status);
- pci_write_config_dword(dev,
- pos + PCI_ERR_ROOT_COMMAND,
- ROOT_PORT_INTR_ON_MESG_MASK);
+ pci_read_config_dword(dev, pos + PCI_ERR_ROOT_COMMAND, &reg32);
+ reg32 |= ROOT_PORT_INTR_ON_MESG_MASK;
+ pci_write_config_dword(dev, pos + PCI_ERR_ROOT_COMMAND, reg32);
return PCI_ERS_RESULT_RECOVERED;
}
@@ -281,7 +368,7 @@ static pci_ers_result_t aer_root_reset(struct pci_dev *dev)
* @error: error severity being notified by port bus
*
* Invoked by Port Bus driver during error recovery.
- **/
+ */
static pci_ers_result_t aer_error_detected(struct pci_dev *dev,
enum pci_channel_state error)
{
@@ -294,7 +381,7 @@ static pci_ers_result_t aer_error_detected(struct pci_dev *dev,
* @dev: pointer to Root Port's pci_dev data structure
*
* Invoked by Port Bus driver during nonfatal recovery.
- **/
+ */
static void aer_error_resume(struct pci_dev *dev)
{
int pos;
@@ -321,7 +408,7 @@ static void aer_error_resume(struct pci_dev *dev)
* aer_service_init - register AER root service driver
*
* Invoked when AER root service driver is loaded.
- **/
+ */
static int __init aer_service_init(void)
{
if (pcie_aer_disable)
@@ -335,7 +422,7 @@ static int __init aer_service_init(void)
* aer_service_exit - unregister AER root service driver
*
* Invoked when AER root service driver is unloaded.
- **/
+ */
static void __exit aer_service_exit(void)
{
pcie_port_service_unregister(&aerdriver);
diff --git a/drivers/pci/pcie/aer/aerdrv.h b/drivers/pci/pcie/aer/aerdrv.h
index bd833ea3ba4..7aaae2d2bd6 100644
--- a/drivers/pci/pcie/aer/aerdrv.h
+++ b/drivers/pci/pcie/aer/aerdrv.h
@@ -17,9 +17,6 @@
#define AER_FATAL 1
#define AER_CORRECTABLE 2
-/* Root Error Status Register Bits */
-#define ROOT_ERR_STATUS_MASKS 0x0f
-
#define SYSTEM_ERROR_INTR_ON_MESG_MASK (PCI_EXP_RTCTL_SECEE| \
PCI_EXP_RTCTL_SENFEE| \
PCI_EXP_RTCTL_SEFEE)
@@ -117,8 +114,7 @@ static inline pci_ers_result_t merge_result(enum pci_ers_result orig,
}
extern struct bus_type pcie_port_bus_type;
-extern void aer_enable_rootport(struct aer_rpc *rpc);
-extern void aer_delete_rootport(struct aer_rpc *rpc);
+extern void aer_do_secondary_bus_reset(struct pci_dev *dev);
extern int aer_init(struct pcie_device *dev);
extern void aer_isr(struct work_struct *work);
extern void aer_print_error(struct pci_dev *dev, struct aer_err_info *info);
diff --git a/drivers/pci/pcie/aer/aerdrv_core.c b/drivers/pci/pcie/aer/aerdrv_core.c
index aceb04b67b6..df2d686fe3d 100644
--- a/drivers/pci/pcie/aer/aerdrv_core.c
+++ b/drivers/pci/pcie/aer/aerdrv_core.c
@@ -47,13 +47,12 @@ int pci_enable_pcie_error_reporting(struct pci_dev *dev)
if (!pos)
return -EIO;
- pci_read_config_word(dev, pos+PCI_EXP_DEVCTL, &reg16);
- reg16 = reg16 |
- PCI_EXP_DEVCTL_CERE |
+ pci_read_config_word(dev, pos + PCI_EXP_DEVCTL, &reg16);
+ reg16 |= (PCI_EXP_DEVCTL_CERE |
PCI_EXP_DEVCTL_NFERE |
PCI_EXP_DEVCTL_FERE |
- PCI_EXP_DEVCTL_URRE;
- pci_write_config_word(dev, pos+PCI_EXP_DEVCTL, reg16);
+ PCI_EXP_DEVCTL_URRE);
+ pci_write_config_word(dev, pos + PCI_EXP_DEVCTL, reg16);
return 0;
}
@@ -71,12 +70,12 @@ int pci_disable_pcie_error_reporting(struct pci_dev *dev)
if (!pos)
return -EIO;
- pci_read_config_word(dev, pos+PCI_EXP_DEVCTL, &reg16);
- reg16 = reg16 & ~(PCI_EXP_DEVCTL_CERE |
- PCI_EXP_DEVCTL_NFERE |
- PCI_EXP_DEVCTL_FERE |
- PCI_EXP_DEVCTL_URRE);
- pci_write_config_word(dev, pos+PCI_EXP_DEVCTL, reg16);
+ pci_read_config_word(dev, pos + PCI_EXP_DEVCTL, &reg16);
+ reg16 &= ~(PCI_EXP_DEVCTL_CERE |
+ PCI_EXP_DEVCTL_NFERE |
+ PCI_EXP_DEVCTL_FERE |
+ PCI_EXP_DEVCTL_URRE);
+ pci_write_config_word(dev, pos + PCI_EXP_DEVCTL, reg16);
return 0;
}
@@ -99,99 +98,46 @@ int pci_cleanup_aer_uncorrect_error_status(struct pci_dev *dev)
}
EXPORT_SYMBOL_GPL(pci_cleanup_aer_uncorrect_error_status);
-static int set_device_error_reporting(struct pci_dev *dev, void *data)
-{
- bool enable = *((bool *)data);
-
- if ((dev->pcie_type == PCI_EXP_TYPE_ROOT_PORT) ||
- (dev->pcie_type == PCI_EXP_TYPE_UPSTREAM) ||
- (dev->pcie_type == PCI_EXP_TYPE_DOWNSTREAM)) {
- if (enable)
- pci_enable_pcie_error_reporting(dev);
- else
- pci_disable_pcie_error_reporting(dev);
- }
-
- if (enable)
- pcie_set_ecrc_checking(dev);
-
- return 0;
-}
-
/**
- * set_downstream_devices_error_reporting - enable/disable the error reporting bits on the root port and its downstream ports.
- * @dev: pointer to root port's pci_dev data structure
- * @enable: true = enable error reporting, false = disable error reporting.
+ * add_error_device - list device to be handled
+ * @e_info: pointer to error info
+ * @dev: pointer to pci_dev to be added
*/
-static void set_downstream_devices_error_reporting(struct pci_dev *dev,
- bool enable)
-{
- set_device_error_reporting(dev, &enable);
-
- if (!dev->subordinate)
- return;
- pci_walk_bus(dev->subordinate, set_device_error_reporting, &enable);
-}
-
-static inline int compare_device_id(struct pci_dev *dev,
- struct aer_err_info *e_info)
-{
- if (e_info->id == ((dev->bus->number << 8) | dev->devfn)) {
- /*
- * Device ID match
- */
- return 1;
- }
-
- return 0;
-}
-
static int add_error_device(struct aer_err_info *e_info, struct pci_dev *dev)
{
if (e_info->error_dev_num < AER_MAX_MULTI_ERR_DEVICES) {
e_info->dev[e_info->error_dev_num] = dev;
e_info->error_dev_num++;
- return 1;
+ return 0;
}
-
- return 0;
+ return -ENOSPC;
}
-
#define PCI_BUS(x) (((x) >> 8) & 0xff)
-static int find_device_iter(struct pci_dev *dev, void *data)
+/**
+ * is_error_source - check whether the device is source of reported error
+ * @dev: pointer to pci_dev to be checked
+ * @e_info: pointer to reported error info
+ */
+static bool is_error_source(struct pci_dev *dev, struct aer_err_info *e_info)
{
int pos;
- u32 status;
- u32 mask;
+ u32 status, mask;
u16 reg16;
- int result;
- struct aer_err_info *e_info = (struct aer_err_info *)data;
/*
* When bus id is equal to 0, it might be a bad id
* reported by root port.
*/
if (!nosourceid && (PCI_BUS(e_info->id) != 0)) {
- result = compare_device_id(dev, e_info);
- if (result)
- add_error_device(e_info, dev);
+ /* Device ID match? */
+ if (e_info->id == ((dev->bus->number << 8) | dev->devfn))
+ return true;
- /*
- * If there is no multiple error, we stop
- * or continue based on the id comparing.
- */
+ /* Continue id comparing if there is no multiple error */
if (!e_info->multi_error_valid)
- return result;
-
- /*
- * If there are multiple errors and id does match,
- * We need continue to search other devices under
- * the root port. Return 0 means that.
- */
- if (result)
- return 0;
+ return false;
}
/*
@@ -200,71 +146,94 @@ static int find_device_iter(struct pci_dev *dev, void *data)
* 2) bus id is equal to 0. Some ports might lose the bus
* id of error source id;
* 3) There are multiple errors and prior id comparing fails;
- * We check AER status registers to find the initial reporter.
+ * We check AER status registers to find possible reporter.
*/
if (atomic_read(&dev->enable_cnt) == 0)
- return 0;
+ return false;
pos = pci_pcie_cap(dev);
if (!pos)
- return 0;
+ return false;
+
/* Check if AER is enabled */
- pci_read_config_word(dev, pos+PCI_EXP_DEVCTL, &reg16);
+ pci_read_config_word(dev, pos + PCI_EXP_DEVCTL, &reg16);
if (!(reg16 & (
PCI_EXP_DEVCTL_CERE |
PCI_EXP_DEVCTL_NFERE |
PCI_EXP_DEVCTL_FERE |
PCI_EXP_DEVCTL_URRE)))
- return 0;
+ return false;
pos = pci_find_ext_capability(dev, PCI_EXT_CAP_ID_ERR);
if (!pos)
- return 0;
+ return false;
- status = 0;
- mask = 0;
+ /* Check if error is recorded */
if (e_info->severity == AER_CORRECTABLE) {
pci_read_config_dword(dev, pos + PCI_ERR_COR_STATUS, &status);
pci_read_config_dword(dev, pos + PCI_ERR_COR_MASK, &mask);
- if (status & ~mask) {
- add_error_device(e_info, dev);
- goto added;
- }
} else {
pci_read_config_dword(dev, pos + PCI_ERR_UNCOR_STATUS, &status);
pci_read_config_dword(dev, pos + PCI_ERR_UNCOR_MASK, &mask);
- if (status & ~mask) {
- add_error_device(e_info, dev);
- goto added;
- }
}
+ if (status & ~mask)
+ return true;
- return 0;
+ return false;
+}
-added:
- if (e_info->multi_error_valid)
- return 0;
- else
- return 1;
+static int find_device_iter(struct pci_dev *dev, void *data)
+{
+ struct aer_err_info *e_info = (struct aer_err_info *)data;
+
+ if (is_error_source(dev, e_info)) {
+ /* List this device */
+ if (add_error_device(e_info, dev)) {
+ /* We cannot handle more... Stop iteration */
+ /* TODO: Should print error message here? */
+ return 1;
+ }
+
+ /* If there is only a single error, stop iteration */
+ if (!e_info->multi_error_valid)
+ return 1;
+ }
+ return 0;
}
/**
* find_source_device - search through device hierarchy for source device
* @parent: pointer to Root Port pci_dev data structure
- * @err_info: including detailed error information such like id
+ * @e_info: including detailed error information such like id
*
- * Invoked when error is detected at the Root Port.
+ * Return true if found.
+ *
+ * Invoked by DPC when error is detected at the Root Port.
+ * Caller of this function must set id, severity, and multi_error_valid of
+ * struct aer_err_info pointed by @e_info properly. This function must fill
+ * e_info->error_dev_num and e_info->dev[], based on the given information.
*/
-static void find_source_device(struct pci_dev *parent,
+static bool find_source_device(struct pci_dev *parent,
struct aer_err_info *e_info)
{
struct pci_dev *dev = parent;
int result;
+ /* Must reset in this function */
+ e_info->error_dev_num = 0;
+
/* Is Root Port an agent that sends error message? */
result = find_device_iter(dev, e_info);
if (result)
- return;
+ return true;
pci_walk_bus(parent->subordinate, find_device_iter, e_info);
+
+ if (!e_info->error_dev_num) {
+ dev_printk(KERN_DEBUG, &parent->dev,
+ "can't find device of ID%04x\n",
+ e_info->id);
+ return false;
+ }
+ return true;
}
static int report_error_detected(struct pci_dev *dev, void *data)
@@ -403,43 +372,77 @@ static pci_ers_result_t broadcast_error_message(struct pci_dev *dev,
return result_data.result;
}
-struct find_aer_service_data {
- struct pcie_port_service_driver *aer_driver;
- int is_downstream;
-};
-
-static int find_aer_service_iter(struct device *device, void *data)
+/**
+ * aer_do_secondary_bus_reset - perform secondary bus reset
+ * @dev: pointer to bridge's pci_dev data structure
+ *
+ * Invoked when performing link reset at Root Port or Downstream Port.
+ */
+void aer_do_secondary_bus_reset(struct pci_dev *dev)
{
- struct device_driver *driver;
- struct pcie_port_service_driver *service_driver;
- struct find_aer_service_data *result;
+ u16 p2p_ctrl;
+
+ /* Assert Secondary Bus Reset */
+ pci_read_config_word(dev, PCI_BRIDGE_CONTROL, &p2p_ctrl);
+ p2p_ctrl |= PCI_BRIDGE_CTL_BUS_RESET;
+ pci_write_config_word(dev, PCI_BRIDGE_CONTROL, p2p_ctrl);
+
+ /*
+ * we should send hot reset message for 2ms to allow it time to
+ * propagate to all downstream ports
+ */
+ msleep(2);
+
+ /* De-assert Secondary Bus Reset */
+ p2p_ctrl &= ~PCI_BRIDGE_CTL_BUS_RESET;
+ pci_write_config_word(dev, PCI_BRIDGE_CONTROL, p2p_ctrl);
+
+ /*
+ * System software must wait for at least 100ms from the end
+ * of a reset of one or more device before it is permitted
+ * to issue Configuration Requests to those devices.
+ */
+ msleep(200);
+}
- result = (struct find_aer_service_data *) data;
+/**
+ * default_downstream_reset_link - default reset function for Downstream Port
+ * @dev: pointer to downstream port's pci_dev data structure
+ *
+ * Invoked when performing link reset at Downstream Port w/ no aer driver.
+ */
+static pci_ers_result_t default_downstream_reset_link(struct pci_dev *dev)
+{
+ aer_do_secondary_bus_reset(dev);
+ dev_printk(KERN_DEBUG, &dev->dev,
+ "Downstream Port link has been reset\n");
+ return PCI_ERS_RESULT_RECOVERED;
+}
- if (device->bus == &pcie_port_bus_type) {
- struct pcie_device *pcie = to_pcie_device(device);
+static int find_aer_service_iter(struct device *device, void *data)
+{
+ struct pcie_port_service_driver *service_driver, **drv;
- if (pcie->port->pcie_type == PCI_EXP_TYPE_DOWNSTREAM)
- result->is_downstream = 1;
+ drv = (struct pcie_port_service_driver **) data;
- driver = device->driver;
- if (driver) {
- service_driver = to_service_driver(driver);
- if (service_driver->service == PCIE_PORT_SERVICE_AER) {
- result->aer_driver = service_driver;
- return 1;
- }
+ if (device->bus == &pcie_port_bus_type && device->driver) {
+ service_driver = to_service_driver(device->driver);
+ if (service_driver->service == PCIE_PORT_SERVICE_AER) {
+ *drv = service_driver;
+ return 1;
}
}
return 0;
}
-static void find_aer_service(struct pci_dev *dev,
- struct find_aer_service_data *data)
+static struct pcie_port_service_driver *find_aer_service(struct pci_dev *dev)
{
- int retval;
- retval = device_for_each_child(&dev->dev, data, find_aer_service_iter);
+ struct pcie_port_service_driver *drv = NULL;
+
+ device_for_each_child(&dev->dev, &drv, find_aer_service_iter);
+
+ return drv;
}
static pci_ers_result_t reset_link(struct pcie_device *aerdev,
@@ -447,38 +450,34 @@ static pci_ers_result_t reset_link(struct pcie_device *aerdev,
{
struct pci_dev *udev;
pci_ers_result_t status;
- struct find_aer_service_data data;
+ struct pcie_port_service_driver *driver;
- if (dev->hdr_type & PCI_HEADER_TYPE_BRIDGE)
+ if (dev->hdr_type & PCI_HEADER_TYPE_BRIDGE) {
+ /* Reset this port for all subordinates */
udev = dev;
- else
+ } else {
+ /* Reset the upstream component (likely downstream port) */
udev = dev->bus->self;
+ }
- data.is_downstream = 0;
- data.aer_driver = NULL;
- find_aer_service(udev, &data);
+ /* Use the aer driver of the component firstly */
+ driver = find_aer_service(udev);
- /*
- * Use the aer driver of the error agent firstly.
- * If it hasn't the aer driver, use the root port's
- */
- if (!data.aer_driver || !data.aer_driver->reset_link) {
- if (data.is_downstream &&
- aerdev->device.driver &&
- to_service_driver(aerdev->device.driver)->reset_link) {
- data.aer_driver =
- to_service_driver(aerdev->device.driver);
- } else {
- dev_printk(KERN_DEBUG, &dev->dev, "no link-reset "
- "support\n");
- return PCI_ERS_RESULT_DISCONNECT;
- }
+ if (driver && driver->reset_link) {
+ status = driver->reset_link(udev);
+ } else if (udev->pcie_type == PCI_EXP_TYPE_DOWNSTREAM) {
+ status = default_downstream_reset_link(udev);
+ } else {
+ dev_printk(KERN_DEBUG, &dev->dev,
+ "no link-reset support at upstream device %s\n",
+ pci_name(udev));
+ return PCI_ERS_RESULT_DISCONNECT;
}
- status = data.aer_driver->reset_link(udev);
if (status != PCI_ERS_RESULT_RECOVERED) {
- dev_printk(KERN_DEBUG, &dev->dev, "link reset at upstream "
- "device %s failed\n", pci_name(udev));
+ dev_printk(KERN_DEBUG, &dev->dev,
+ "link reset at upstream device %s failed\n",
+ pci_name(udev));
return PCI_ERS_RESULT_DISCONNECT;
}
@@ -495,8 +494,7 @@ static pci_ers_result_t reset_link(struct pcie_device *aerdev,
* error detected message to all downstream drivers within a hierarchy in
* question and return the returned code.
*/
-static pci_ers_result_t do_recovery(struct pcie_device *aerdev,
- struct pci_dev *dev,
+static void do_recovery(struct pcie_device *aerdev, struct pci_dev *dev,
int severity)
{
pci_ers_result_t status, result = PCI_ERS_RESULT_RECOVERED;
@@ -514,10 +512,8 @@ static pci_ers_result_t do_recovery(struct pcie_device *aerdev,
if (severity == AER_FATAL) {
result = reset_link(aerdev, dev);
- if (result != PCI_ERS_RESULT_RECOVERED) {
- /* TODO: Should panic here? */
- return result;
- }
+ if (result != PCI_ERS_RESULT_RECOVERED)
+ goto failed;
}
if (status == PCI_ERS_RESULT_CAN_RECOVER)
@@ -538,13 +534,22 @@ static pci_ers_result_t do_recovery(struct pcie_device *aerdev,
report_slot_reset);
}
- if (status == PCI_ERS_RESULT_RECOVERED)
- broadcast_error_message(dev,
+ if (status != PCI_ERS_RESULT_RECOVERED)
+ goto failed;
+
+ broadcast_error_message(dev,
state,
"resume",
report_resume);
- return status;
+ dev_printk(KERN_DEBUG, &dev->dev,
+ "AER driver successfully recovered\n");
+ return;
+
+failed:
+ /* TODO: Should kernel panic here? */
+ dev_printk(KERN_DEBUG, &dev->dev,
+ "AER driver didn't recover\n");
}
/**
@@ -559,7 +564,6 @@ static void handle_error_source(struct pcie_device *aerdev,
struct pci_dev *dev,
struct aer_err_info *info)
{
- pci_ers_result_t status = 0;
int pos;
if (info->severity == AER_CORRECTABLE) {
@@ -571,114 +575,8 @@ static void handle_error_source(struct pcie_device *aerdev,
if (pos)
pci_write_config_dword(dev, pos + PCI_ERR_COR_STATUS,
info->status);
- } else {
- status = do_recovery(aerdev, dev, info->severity);
- if (status == PCI_ERS_RESULT_RECOVERED) {
- dev_printk(KERN_DEBUG, &dev->dev, "AER driver "
- "successfully recovered\n");
- } else {
- /* TODO: Should kernel panic here? */
- dev_printk(KERN_DEBUG, &dev->dev, "AER driver didn't "
- "recover\n");
- }
- }
-}
-
-/**
- * aer_enable_rootport - enable Root Port's interrupts when receiving messages
- * @rpc: pointer to a Root Port data structure
- *
- * Invoked when PCIe bus loads AER service driver.
- */
-void aer_enable_rootport(struct aer_rpc *rpc)
-{
- struct pci_dev *pdev = rpc->rpd->port;
- int pos, aer_pos;
- u16 reg16;
- u32 reg32;
-
- pos = pci_pcie_cap(pdev);
- /* Clear PCIe Capability's Device Status */
- pci_read_config_word(pdev, pos+PCI_EXP_DEVSTA, &reg16);
- pci_write_config_word(pdev, pos+PCI_EXP_DEVSTA, reg16);
-
- /* Disable system error generation in response to error messages */
- pci_read_config_word(pdev, pos + PCI_EXP_RTCTL, &reg16);
- reg16 &= ~(SYSTEM_ERROR_INTR_ON_MESG_MASK);
- pci_write_config_word(pdev, pos + PCI_EXP_RTCTL, reg16);
-
- aer_pos = pci_find_ext_capability(pdev, PCI_EXT_CAP_ID_ERR);
- /* Clear error status */
- pci_read_config_dword(pdev, aer_pos + PCI_ERR_ROOT_STATUS, &reg32);
- pci_write_config_dword(pdev, aer_pos + PCI_ERR_ROOT_STATUS, reg32);
- pci_read_config_dword(pdev, aer_pos + PCI_ERR_COR_STATUS, &reg32);
- pci_write_config_dword(pdev, aer_pos + PCI_ERR_COR_STATUS, reg32);
- pci_read_config_dword(pdev, aer_pos + PCI_ERR_UNCOR_STATUS, &reg32);
- pci_write_config_dword(pdev, aer_pos + PCI_ERR_UNCOR_STATUS, reg32);
-
- /*
- * Enable error reporting for the root port device and downstream port
- * devices.
- */
- set_downstream_devices_error_reporting(pdev, true);
-
- /* Enable Root Port's interrupt in response to error messages */
- pci_write_config_dword(pdev,
- aer_pos + PCI_ERR_ROOT_COMMAND,
- ROOT_PORT_INTR_ON_MESG_MASK);
-}
-
-/**
- * disable_root_aer - disable Root Port's interrupts when receiving messages
- * @rpc: pointer to a Root Port data structure
- *
- * Invoked when PCIe bus unloads AER service driver.
- */
-static void disable_root_aer(struct aer_rpc *rpc)
-{
- struct pci_dev *pdev = rpc->rpd->port;
- u32 reg32;
- int pos;
-
- /*
- * Disable error reporting for the root port device and downstream port
- * devices.
- */
- set_downstream_devices_error_reporting(pdev, false);
-
- pos = pci_find_ext_capability(pdev, PCI_EXT_CAP_ID_ERR);
- /* Disable Root's interrupt in response to error messages */
- pci_write_config_dword(pdev, pos + PCI_ERR_ROOT_COMMAND, 0);
-
- /* Clear Root's error status reg */
- pci_read_config_dword(pdev, pos + PCI_ERR_ROOT_STATUS, &reg32);
- pci_write_config_dword(pdev, pos + PCI_ERR_ROOT_STATUS, reg32);
-}
-
-/**
- * get_e_source - retrieve an error source
- * @rpc: pointer to the root port which holds an error
- *
- * Invoked by DPC handler to consume an error.
- */
-static struct aer_err_source *get_e_source(struct aer_rpc *rpc)
-{
- struct aer_err_source *e_source;
- unsigned long flags;
-
- /* Lock access to Root error producer/consumer index */
- spin_lock_irqsave(&rpc->e_lock, flags);
- if (rpc->prod_idx == rpc->cons_idx) {
- spin_unlock_irqrestore(&rpc->e_lock, flags);
- return NULL;
- }
- e_source = &rpc->e_sources[rpc->cons_idx];
- rpc->cons_idx++;
- if (rpc->cons_idx == AER_ERROR_SOURCES_MAX)
- rpc->cons_idx = 0;
- spin_unlock_irqrestore(&rpc->e_lock, flags);
-
- return e_source;
+ } else
+ do_recovery(aerdev, dev, info->severity);
}
/**
@@ -687,11 +585,14 @@ static struct aer_err_source *get_e_source(struct aer_rpc *rpc)
* @info: pointer to structure to store the error record
*
* Return 1 on success, 0 on error.
+ *
+ * Note that @info is reused among all error devices. Clear fields properly.
*/
static int get_device_error_info(struct pci_dev *dev, struct aer_err_info *info)
{
int pos, temp;
+ /* Must reset in this function */
info->status = 0;
info->tlp_header_valid = 0;
@@ -744,12 +645,6 @@ static inline void aer_process_err_devices(struct pcie_device *p_device,
{
int i;
- if (!e_info->dev[0]) {
- dev_printk(KERN_DEBUG, &p_device->port->dev,
- "can't find device of ID%04x\n",
- e_info->id);
- }
-
/* Report all before handle them, not to lost records by reset etc. */
for (i = 0; i < e_info->error_dev_num && e_info->dev[i]; i++) {
if (get_device_error_info(e_info->dev[i], e_info))
@@ -770,11 +665,10 @@ static void aer_isr_one_error(struct pcie_device *p_device,
struct aer_err_source *e_src)
{
struct aer_err_info *e_info;
- int i;
/* struct aer_err_info might be big, so we allocate it with slab */
e_info = kmalloc(sizeof(struct aer_err_info), GFP_KERNEL);
- if (e_info == NULL) {
+ if (!e_info) {
dev_printk(KERN_DEBUG, &p_device->port->dev,
"Can't allocate mem when processing AER errors\n");
return;
@@ -784,37 +678,72 @@ static void aer_isr_one_error(struct pcie_device *p_device,
* There is a possibility that both correctable error and
* uncorrectable error being logged. Report correctable error first.
*/
- for (i = 1; i & ROOT_ERR_STATUS_MASKS ; i <<= 2) {
- if (i > 4)
- break;
- if (!(e_src->status & i))
- continue;
-
- memset(e_info, 0, sizeof(struct aer_err_info));
-
- /* Init comprehensive error information */
- if (i & PCI_ERR_ROOT_COR_RCV) {
- e_info->id = ERR_COR_ID(e_src->id);
- e_info->severity = AER_CORRECTABLE;
- } else {
- e_info->id = ERR_UNCOR_ID(e_src->id);
- e_info->severity = ((e_src->status >> 6) & 1);
- }
- if (e_src->status &
- (PCI_ERR_ROOT_MULTI_COR_RCV |
- PCI_ERR_ROOT_MULTI_UNCOR_RCV))
+ if (e_src->status & PCI_ERR_ROOT_COR_RCV) {
+ e_info->id = ERR_COR_ID(e_src->id);
+ e_info->severity = AER_CORRECTABLE;
+
+ if (e_src->status & PCI_ERR_ROOT_MULTI_COR_RCV)
e_info->multi_error_valid = 1;
+ else
+ e_info->multi_error_valid = 0;
+
+ aer_print_port_info(p_device->port, e_info);
+
+ if (find_source_device(p_device->port, e_info))
+ aer_process_err_devices(p_device, e_info);
+ }
+
+ if (e_src->status & PCI_ERR_ROOT_UNCOR_RCV) {
+ e_info->id = ERR_UNCOR_ID(e_src->id);
+
+ if (e_src->status & PCI_ERR_ROOT_FATAL_RCV)
+ e_info->severity = AER_FATAL;
+ else
+ e_info->severity = AER_NONFATAL;
+
+ if (e_src->status & PCI_ERR_ROOT_MULTI_UNCOR_RCV)
+ e_info->multi_error_valid = 1;
+ else
+ e_info->multi_error_valid = 0;
aer_print_port_info(p_device->port, e_info);
- find_source_device(p_device->port, e_info);
- aer_process_err_devices(p_device, e_info);
+ if (find_source_device(p_device->port, e_info))
+ aer_process_err_devices(p_device, e_info);
}
kfree(e_info);
}
/**
+ * get_e_source - retrieve an error source
+ * @rpc: pointer to the root port which holds an error
+ * @e_src: pointer to store retrieved error source
+ *
+ * Return 1 if an error source is retrieved, otherwise 0.
+ *
+ * Invoked by DPC handler to consume an error.
+ */
+static int get_e_source(struct aer_rpc *rpc, struct aer_err_source *e_src)
+{
+ unsigned long flags;
+ int ret = 0;
+
+ /* Lock access to Root error producer/consumer index */
+ spin_lock_irqsave(&rpc->e_lock, flags);
+ if (rpc->prod_idx != rpc->cons_idx) {
+ *e_src = rpc->e_sources[rpc->cons_idx];
+ rpc->cons_idx++;
+ if (rpc->cons_idx == AER_ERROR_SOURCES_MAX)
+ rpc->cons_idx = 0;
+ ret = 1;
+ }
+ spin_unlock_irqrestore(&rpc->e_lock, flags);
+
+ return ret;
+}
+
+/**
* aer_isr - consume errors detected by root port
* @work: definition of this work item
*
@@ -824,34 +753,17 @@ void aer_isr(struct work_struct *work)
{
struct aer_rpc *rpc = container_of(work, struct aer_rpc, dpc_handler);
struct pcie_device *p_device = rpc->rpd;
- struct aer_err_source *e_src;
+ struct aer_err_source e_src;
mutex_lock(&rpc->rpc_mutex);
- e_src = get_e_source(rpc);
- while (e_src) {
- aer_isr_one_error(p_device, e_src);
- e_src = get_e_source(rpc);
- }
+ while (get_e_source(rpc, &e_src))
+ aer_isr_one_error(p_device, &e_src);
mutex_unlock(&rpc->rpc_mutex);
wake_up(&rpc->wait_release);
}
/**
- * aer_delete_rootport - disable root port aer and delete service data
- * @rpc: pointer to a root port device being deleted
- *
- * Invoked when AER service unloaded on a specific Root Port
- */
-void aer_delete_rootport(struct aer_rpc *rpc)
-{
- /* Disable root port AER itself */
- disable_root_aer(rpc);
-
- kfree(rpc);
-}
-
-/**
* aer_init - provide AER initialization
* @dev: pointer to AER pcie device
*
diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
index 27c0e6eb713..b7512cf08c5 100644
--- a/drivers/pci/quirks.c
+++ b/drivers/pci/quirks.c
@@ -2127,6 +2127,7 @@ DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, 0x9602, quirk_disable_msi);
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ASUSTEK, 0x9602, quirk_disable_msi);
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AI, 0x9602, quirk_disable_msi);
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, 0xa238, quirk_disable_msi);
+DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x5a3f, quirk_disable_msi);
/* Go through the list of Hypertransport capabilities and
* return 1 if a HT MSI capability is found and enabled */
@@ -2218,15 +2219,16 @@ DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SERVERWORKS,
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8132_BRIDGE,
ht_enable_msi_mapping);
-/* The P5N32-SLI Premium motherboard from Asus has a problem with msi
+/* The P5N32-SLI motherboards from Asus have a problem with msi
* for the MCP55 NIC. It is not yet determined whether the msi problem
* also affects other devices. As for now, turn off msi for this device.
*/
static void __devinit nvenet_msi_disable(struct pci_dev *dev)
{
- if (dmi_name_in_vendors("P5N32-SLI PREMIUM")) {
+ if (dmi_name_in_vendors("P5N32-SLI PREMIUM") ||
+ dmi_name_in_vendors("P5N32-E SLI")) {
dev_info(&dev->dev,
- "Disabling msi for MCP55 NIC on P5N32-SLI Premium\n");
+ "Disabling msi for MCP55 NIC on P5N32-SLI\n");
dev->no_msi = 1;
}
}
@@ -2552,6 +2554,19 @@ DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x1518, quirk_i82576_sriov);
#endif /* CONFIG_PCI_IOV */
+/* Allow manual resource allocation for PCI hotplug bridges
+ * via pci=hpmemsize=nnM and pci=hpiosize=nnM parameters. For
+ * some PCI-PCI hotplug bridges, like PLX 6254 (former HINT HB6),
+ * kernel fails to allocate resources when hotplug device is
+ * inserted and PCI bus is rescanned.
+ */
+static void __devinit quirk_hotplug_bridge(struct pci_dev *dev)
+{
+ dev->is_hotplug_bridge = 1;
+}
+
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_HINT, 0x0020, quirk_hotplug_bridge);
+
/*
* This is a quirk for the Ricoh MMC controller found as a part of
* some mulifunction chips.
diff --git a/drivers/pci/slot.c b/drivers/pci/slot.c
index 659eaa0fc48..e0189cf7c55 100644
--- a/drivers/pci/slot.c
+++ b/drivers/pci/slot.c
@@ -97,6 +97,50 @@ static ssize_t cur_speed_read_file(struct pci_slot *slot, char *buf)
return bus_speed_read(slot->bus->cur_bus_speed, buf);
}
+static void remove_sysfs_files(struct pci_slot *slot)
+{
+ char func[10];
+ struct list_head *tmp;
+
+ list_for_each(tmp, &slot->bus->devices) {
+ struct pci_dev *dev = pci_dev_b(tmp);
+ if (PCI_SLOT(dev->devfn) != slot->number)
+ continue;
+ sysfs_remove_link(&dev->dev.kobj, "slot");
+
+ snprintf(func, 10, "function%d", PCI_FUNC(dev->devfn));
+ sysfs_remove_link(&slot->kobj, func);
+ }
+}
+
+static int create_sysfs_files(struct pci_slot *slot)
+{
+ int result;
+ char func[10];
+ struct list_head *tmp;
+
+ list_for_each(tmp, &slot->bus->devices) {
+ struct pci_dev *dev = pci_dev_b(tmp);
+ if (PCI_SLOT(dev->devfn) != slot->number)
+ continue;
+
+ result = sysfs_create_link(&dev->dev.kobj, &slot->kobj, "slot");
+ if (result)
+ goto fail;
+
+ snprintf(func, 10, "function%d", PCI_FUNC(dev->devfn));
+ result = sysfs_create_link(&slot->kobj, &dev->dev.kobj, func);
+ if (result)
+ goto fail;
+ }
+
+ return 0;
+
+fail:
+ remove_sysfs_files(slot);
+ return result;
+}
+
static void pci_slot_release(struct kobject *kobj)
{
struct pci_dev *dev;
@@ -109,6 +153,8 @@ static void pci_slot_release(struct kobject *kobj)
if (PCI_SLOT(dev->devfn) == slot->number)
dev->slot = NULL;
+ remove_sysfs_files(slot);
+
list_del(&slot->list);
kfree(slot);
@@ -300,6 +346,8 @@ placeholder:
INIT_LIST_HEAD(&slot->list);
list_add(&slot->list, &parent->slots);
+ create_sysfs_files(slot);
+
list_for_each_entry(dev, &parent->devices, bus_list)
if (PCI_SLOT(dev->devfn) == slot_nr)
dev->slot = slot;