i7core_edac: Use a more generic approach for probing PCI devices
Currently, only one PCI set of tables is allowed. This prevents using
the driver for other devices like Lynnfield, with have a different
set of PCI ID's.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/drivers/edac/i7core_edac.c b/drivers/edac/i7core_edac.c
index bb538df..b6fce2e 100644
--- a/drivers/edac/i7core_edac.c
+++ b/drivers/edac/i7core_edac.c
@@ -202,12 +202,14 @@
int dev;
int func;
int dev_id;
+ int optional;
};
struct i7core_dev {
struct list_head list;
u8 socket;
struct pci_dev **pdev;
+ int n_devs;
struct mem_ctl_info *mci;
};
@@ -259,11 +261,12 @@
.func = (function), \
.dev_id = (device_id)
-struct pci_id_descr pci_dev_descr[] = {
+struct pci_id_descr pci_dev_descr_i7core[] = {
/* Memory controller */
{ PCI_DESCR(3, 0, PCI_DEVICE_ID_INTEL_I7_MCR) },
{ PCI_DESCR(3, 1, PCI_DEVICE_ID_INTEL_I7_MC_TAD) },
- { PCI_DESCR(3, 2, PCI_DEVICE_ID_INTEL_I7_MC_RAS) }, /* if RDIMM */
+ /* Exists only for RDIMM */
+ { PCI_DESCR(3, 2, PCI_DEVICE_ID_INTEL_I7_MC_RAS), .optional = 1 },
{ PCI_DESCR(3, 4, PCI_DEVICE_ID_INTEL_I7_MC_TEST) },
/* Channel 0 */
@@ -294,7 +297,6 @@
{ PCI_DESCR(0, 0, PCI_DEVICE_ID_INTEL_I7_NONCORE) },
};
-#define N_DEVS ARRAY_SIZE(pci_dev_descr)
/*
* pci_device_id table for which devices we are looking for
@@ -380,7 +382,7 @@
if (!i7core_dev)
return NULL;
- for (i = 0; i < N_DEVS; i++) {
+ for (i = 0; i < i7core_dev->n_devs; i++) {
if (!i7core_dev->pdev[i])
continue;
@@ -1116,7 +1118,7 @@
int i;
debugf0(__FILE__ ": %s()\n", __func__);
- for (i = 0; i < N_DEVS; i++) {
+ for (i = 0; i < i7core_dev->n_devs; i++) {
struct pci_dev *pdev = i7core_dev->pdev[i];
if (!pdev)
continue;
@@ -1138,7 +1140,7 @@
i7core_put_devices(i7core_dev);
}
-static void i7core_xeon_pci_fixup(void)
+static void i7core_xeon_pci_fixup(int dev_id)
{
struct pci_dev *pdev = NULL;
int i;
@@ -1147,8 +1149,7 @@
* aren't announced by acpi. So, we need to use a legacy scan probing
* to detect them
*/
- pdev = pci_get_device(PCI_VENDOR_ID_INTEL,
- pci_dev_descr[0].dev_id, NULL);
+ pdev = pci_get_device(PCI_VENDOR_ID_INTEL, dev_id, NULL);
if (unlikely(!pdev)) {
for (i = 0; i < MAX_SOCKET_BUSES; i++)
pcibios_scan_specific_bus(255-i);
@@ -1161,7 +1162,8 @@
*
* Need to 'get' device 16 func 1 and func 2
*/
-int i7core_get_onedevice(struct pci_dev **prev, int devno)
+int i7core_get_onedevice(struct pci_dev **prev, int devno,
+ struct pci_id_descr *dev_descr, unsigned n_devs)
{
struct i7core_dev *i7core_dev;
@@ -1170,14 +1172,14 @@
u8 socket = 0;
pdev = pci_get_device(PCI_VENDOR_ID_INTEL,
- pci_dev_descr[devno].dev_id, *prev);
+ dev_descr->dev_id, *prev);
/*
* On Xeon 55xx, the Intel Quckpath Arch Generic Non-core regs
* is at addr 8086:2c40, instead of 8086:2c41. So, we need
* to probe for the alternate address in case of failure
*/
- if (pci_dev_descr[devno].dev_id == PCI_DEVICE_ID_INTEL_I7_NONCORE && !pdev)
+ if (dev_descr->dev_id == PCI_DEVICE_ID_INTEL_I7_NONCORE && !pdev)
pdev = pci_get_device(PCI_VENDOR_ID_INTEL,
PCI_DEVICE_ID_INTEL_I7_NONCORE_ALT, *prev);
@@ -1187,19 +1189,13 @@
return 0;
}
- /*
- * Dev 3 function 2 only exists on chips with RDIMMs
- * so, it is ok to not found it
- */
- if ((pci_dev_descr[devno].dev == 3) && (pci_dev_descr[devno].func == 2)) {
- *prev = pdev;
+ if (dev_descr->optional)
return 0;
- }
i7core_printk(KERN_ERR,
"Device not found: dev %02x.%d PCI ID %04x:%04x\n",
- pci_dev_descr[devno].dev, pci_dev_descr[devno].func,
- PCI_VENDOR_ID_INTEL, pci_dev_descr[devno].dev_id);
+ dev_descr->dev, dev_descr->func,
+ PCI_VENDOR_ID_INTEL, dev_descr->dev_id);
/* End of list, leave */
return -ENODEV;
@@ -1216,11 +1212,12 @@
i7core_dev = kzalloc(sizeof(*i7core_dev), GFP_KERNEL);
if (!i7core_dev)
return -ENOMEM;
- i7core_dev->pdev = kzalloc(sizeof(*i7core_dev->pdev) * N_DEVS,
+ i7core_dev->pdev = kzalloc(sizeof(*i7core_dev->pdev) * n_devs,
GFP_KERNEL);
if (!i7core_dev->pdev)
return -ENOMEM;
i7core_dev->socket = socket;
+ i7core_dev->n_devs = n_devs;
list_add_tail(&i7core_dev->list, &i7core_edac_list);
}
@@ -1228,8 +1225,8 @@
i7core_printk(KERN_ERR,
"Duplicated device for "
"dev %02x:%02x.%d PCI ID %04x:%04x\n",
- bus, pci_dev_descr[devno].dev, pci_dev_descr[devno].func,
- PCI_VENDOR_ID_INTEL, pci_dev_descr[devno].dev_id);
+ bus, dev_descr->dev, dev_descr->func,
+ PCI_VENDOR_ID_INTEL, dev_descr->dev_id);
pci_dev_put(pdev);
return -ENODEV;
}
@@ -1237,14 +1234,14 @@
i7core_dev->pdev[devno] = pdev;
/* Sanity check */
- if (unlikely(PCI_SLOT(pdev->devfn) != pci_dev_descr[devno].dev ||
- PCI_FUNC(pdev->devfn) != pci_dev_descr[devno].func)) {
+ if (unlikely(PCI_SLOT(pdev->devfn) != dev_descr->dev ||
+ PCI_FUNC(pdev->devfn) != dev_descr->func)) {
i7core_printk(KERN_ERR,
"Device PCI ID %04x:%04x "
"has dev %02x:%02x.%d instead of dev %02x:%02x.%d\n",
- PCI_VENDOR_ID_INTEL, pci_dev_descr[devno].dev_id,
+ PCI_VENDOR_ID_INTEL, dev_descr->dev_id,
bus, PCI_SLOT(pdev->devfn), PCI_FUNC(pdev->devfn),
- bus, pci_dev_descr[devno].dev, pci_dev_descr[devno].func);
+ bus, dev_descr->dev, dev_descr->func);
return -ENODEV;
}
@@ -1253,30 +1250,32 @@
i7core_printk(KERN_ERR,
"Couldn't enable "
"dev %02x:%02x.%d PCI ID %04x:%04x\n",
- bus, pci_dev_descr[devno].dev, pci_dev_descr[devno].func,
- PCI_VENDOR_ID_INTEL, pci_dev_descr[devno].dev_id);
+ bus, dev_descr->dev, dev_descr->func,
+ PCI_VENDOR_ID_INTEL, dev_descr->dev_id);
return -ENODEV;
}
debugf0("Detected socket %d dev %02x:%02x.%d PCI ID %04x:%04x\n",
- socket, bus, pci_dev_descr[devno].dev,
- pci_dev_descr[devno].func,
- PCI_VENDOR_ID_INTEL, pci_dev_descr[devno].dev_id);
+ socket, bus, dev_descr->dev,
+ dev_descr->func,
+ PCI_VENDOR_ID_INTEL, dev_descr->dev_id);
*prev = pdev;
return 0;
}
-static int i7core_get_devices(void)
+static int i7core_get_devices(struct pci_id_descr dev_descr[], unsigned n_devs)
{
- int i;
+ int i, rc;
struct pci_dev *pdev = NULL;
- for (i = 0; i < N_DEVS; i++) {
+ for (i = 0; i < n_devs; i++) {
pdev = NULL;
do {
- if (i7core_get_onedevice(&pdev, i) < 0) {
+ rc = i7core_get_onedevice(&pdev, i, &dev_descr[i],
+ n_devs);
+ if (rc < 0) {
i7core_put_all_devices();
return -ENODEV;
}
@@ -1298,7 +1297,7 @@
i7core_dev->mci = mci;
pvt->is_registered = 0;
- for (i = 0; i < N_DEVS; i++) {
+ for (i = 0; i < i7core_dev->n_devs; i++) {
pdev = i7core_dev->pdev[i];
if (!pdev)
continue;
@@ -1838,7 +1837,9 @@
/* get the pci devices we want to reserve for our use */
mutex_lock(&i7core_edac_lock);
- rc = i7core_get_devices();
+
+ rc = i7core_get_devices(pci_dev_descr_i7core,
+ ARRAY_SIZE(pci_dev_descr_i7core));
if (unlikely(rc < 0))
goto fail0;
@@ -1937,7 +1938,7 @@
/* Ensure that the OPSTATE is set correctly for POLL or NMI */
opstate_init();
- i7core_xeon_pci_fixup();
+ i7core_xeon_pci_fixup(pci_dev_descr_i7core[0].dev_id);
pci_rc = pci_register_driver(&i7core_driver);