*
*/
-
-#include <linux/config.h>
#include <linux/module.h>
#include <linux/init.h>
-
#include <linux/pci.h>
#include <linux/pci_ids.h>
-
#include <linux/slab.h>
-
#include "edac_mc.h"
+#define AMD76X_REVISION " Ver: 2.0.1 " __DATE__
+#define EDAC_MOD_STR "amd76x_edac"
+
+#define amd76x_printk(level, fmt, arg...) \
+ edac_printk(level, "amd76x", fmt, ##arg)
+
+#define amd76x_mc_printk(mci, level, fmt, arg...) \
+ edac_mc_chipset_printk(mci, level, "amd76x", fmt, ##arg)
#define AMD76X_NR_CSROWS 8
#define AMD76X_NR_CHANS 1
#define AMD76X_NR_DIMMS 4
-
/* AMD 76x register addresses - device 0 function 0 - PCI bridge */
+
#define AMD76X_ECC_MODE_STATUS 0x48 /* Mode and status of ECC (32b)
*
* 31:16 reserved
* 7:4 UE cs row
* 3:0 CE cs row
*/
+
#define AMD76X_DRAM_MODE_STATUS 0x58 /* DRAM Mode and status (32b)
*
* 31:26 clock disable 5 - 0
* 15:8 reserved
* 7:0 x4 mode enable 7 - 0
*/
+
#define AMD76X_MEM_BASE_ADDR 0xC0 /* Memory base address (8 x 32b)
*
* 31:23 chip-select base
* 0 chip-select enable
*/
-
struct amd76x_error_info {
u32 ecc_mode_status;
};
-
enum amd76x_chips {
AMD761 = 0,
AMD762
};
-
struct amd76x_dev_info {
const char *ctl_name;
};
-
static const struct amd76x_dev_info amd76x_devs[] = {
- [AMD761] = {.ctl_name = "AMD761"},
- [AMD762] = {.ctl_name = "AMD762"},
+ [AMD761] = {
+ .ctl_name = "AMD761"
+ },
+ [AMD762] = {
+ .ctl_name = "AMD762"
+ },
};
-
/**
* amd76x_get_error_info - fetch error information
* @mci: Memory controller
* Fetch and store the AMD76x ECC status. Clear pending status
* on the chip so that further errors will be reported
*/
-
-static void amd76x_get_error_info (struct mem_ctl_info *mci,
- struct amd76x_error_info *info)
+static void amd76x_get_error_info(struct mem_ctl_info *mci,
+ struct amd76x_error_info *info)
{
- pci_read_config_dword(mci->pdev, AMD76X_ECC_MODE_STATUS,
+ struct pci_dev *pdev;
+
+ pdev = to_pci_dev(mci->dev);
+ pci_read_config_dword(pdev, AMD76X_ECC_MODE_STATUS,
&info->ecc_mode_status);
if (info->ecc_mode_status & BIT(8))
- pci_write_bits32(mci->pdev, AMD76X_ECC_MODE_STATUS,
- (u32) BIT(8), (u32) BIT(8));
+ pci_write_bits32(pdev, AMD76X_ECC_MODE_STATUS,
+ (u32) BIT(8), (u32) BIT(8));
if (info->ecc_mode_status & BIT(9))
- pci_write_bits32(mci->pdev, AMD76X_ECC_MODE_STATUS,
- (u32) BIT(9), (u32) BIT(9));
+ pci_write_bits32(pdev, AMD76X_ECC_MODE_STATUS,
+ (u32) BIT(9), (u32) BIT(9));
}
-
/**
* amd76x_process_error_info - Error check
* @mci: Memory controller
* A return of 1 indicates an error. Also if handle_errors is true
* then attempt to handle and clean up after the error
*/
-
-static int amd76x_process_error_info (struct mem_ctl_info *mci,
+static int amd76x_process_error_info(struct mem_ctl_info *mci,
struct amd76x_error_info *info, int handle_errors)
{
int error_found;
if (handle_errors) {
row = (info->ecc_mode_status >> 4) & 0xf;
- edac_mc_handle_ue(mci,
- mci->csrows[row].first_page, 0, row,
- mci->ctl_name);
+ edac_mc_handle_ue(mci, mci->csrows[row].first_page, 0,
+ row, mci->ctl_name);
}
}
if (handle_errors) {
row = info->ecc_mode_status & 0xf;
- edac_mc_handle_ce(mci,
- mci->csrows[row].first_page, 0, 0, row, 0,
- mci->ctl_name);
+ edac_mc_handle_ce(mci, mci->csrows[row].first_page, 0,
+ 0, row, 0, mci->ctl_name);
}
}
+
return error_found;
}
* Called by the poll handlers this function reads the status
* from the controller and checks for errors.
*/
-
static void amd76x_check(struct mem_ctl_info *mci)
{
struct amd76x_error_info info;
- debugf3("MC: " __FILE__ ": %s()\n", __func__);
+ debugf3("%s()\n", __func__);
amd76x_get_error_info(mci, &info);
amd76x_process_error_info(mci, &info, 1);
}
+static void amd76x_init_csrows(struct mem_ctl_info *mci, struct pci_dev *pdev,
+ enum edac_type edac_mode)
+{
+ struct csrow_info *csrow;
+ u32 mba, mba_base, mba_mask, dms;
+ int index;
+
+ for (index = 0; index < mci->nr_csrows; index++) {
+ csrow = &mci->csrows[index];
+
+ /* find the DRAM Chip Select Base address and mask */
+ pci_read_config_dword(pdev,
+ AMD76X_MEM_BASE_ADDR + (index * 4),
+ &mba);
+
+ if (!(mba & BIT(0)))
+ continue;
+
+ mba_base = mba & 0xff800000UL;
+ mba_mask = ((mba & 0xff80) << 16) | 0x7fffffUL;
+ pci_read_config_dword(pdev, AMD76X_DRAM_MODE_STATUS, &dms);
+ csrow->first_page = mba_base >> PAGE_SHIFT;
+ csrow->nr_pages = (mba_mask + 1) >> PAGE_SHIFT;
+ csrow->last_page = csrow->first_page + csrow->nr_pages - 1;
+ csrow->page_mask = mba_mask >> PAGE_SHIFT;
+ csrow->grain = csrow->nr_pages << PAGE_SHIFT;
+ csrow->mtype = MEM_RDDR;
+ csrow->dtype = ((dms >> index) & 0x1) ? DEV_X4 : DEV_UNKNOWN;
+ csrow->edac_mode = edac_mode;
+ }
+}
/**
* amd76x_probe1 - Perform set up for detected device
* controller status reporting. We configure and set up the
* memory controller reporting and claim the device.
*/
-
static int amd76x_probe1(struct pci_dev *pdev, int dev_idx)
{
- int rc = -ENODEV;
- int index;
- struct mem_ctl_info *mci = NULL;
- enum edac_type ems_modes[] = {
+ static const enum edac_type ems_modes[] = {
EDAC_NONE,
EDAC_EC,
EDAC_SECDED,
EDAC_SECDED
};
+ struct mem_ctl_info *mci = NULL;
u32 ems;
u32 ems_mode;
+ struct amd76x_error_info discard;
- debugf0("MC: " __FILE__ ": %s()\n", __func__);
-
+ debugf0("%s()\n", __func__);
pci_read_config_dword(pdev, AMD76X_ECC_MODE_STATUS, &ems);
ems_mode = (ems >> 10) & 0x3;
-
mci = edac_mc_alloc(0, AMD76X_NR_CSROWS, AMD76X_NR_CHANS);
if (mci == NULL) {
- rc = -ENOMEM;
- goto fail;
+ return -ENOMEM;
}
- debugf0("MC: " __FILE__ ": %s(): mci = %p\n", __func__, mci);
-
- mci->pdev = pci_dev_get(pdev);
+ debugf0("%s(): mci = %p\n", __func__, mci);
+ mci->dev = &pdev->dev;
mci->mtype_cap = MEM_FLAG_RDDR;
-
mci->edac_ctl_cap = EDAC_FLAG_NONE | EDAC_FLAG_EC | EDAC_FLAG_SECDED;
mci->edac_cap = ems_mode ?
- (EDAC_FLAG_EC | EDAC_FLAG_SECDED) : EDAC_FLAG_NONE;
-
- mci->mod_name = BS_MOD_STR;
- mci->mod_ver = "$Revision: 1.4.2.5 $";
+ (EDAC_FLAG_EC | EDAC_FLAG_SECDED) : EDAC_FLAG_NONE;
+ mci->mod_name = EDAC_MOD_STR;
+ mci->mod_ver = AMD76X_REVISION;
mci->ctl_name = amd76x_devs[dev_idx].ctl_name;
mci->edac_check = amd76x_check;
mci->ctl_page_to_phys = NULL;
- for (index = 0; index < mci->nr_csrows; index++) {
- struct csrow_info *csrow = &mci->csrows[index];
- u32 mba;
- u32 mba_base;
- u32 mba_mask;
- u32 dms;
-
- /* find the DRAM Chip Select Base address and mask */
- pci_read_config_dword(mci->pdev,
- AMD76X_MEM_BASE_ADDR + (index * 4),
- &mba);
-
- if (!(mba & BIT(0)))
- continue;
-
- mba_base = mba & 0xff800000UL;
- mba_mask = ((mba & 0xff80) << 16) | 0x7fffffUL;
-
- pci_read_config_dword(mci->pdev, AMD76X_DRAM_MODE_STATUS,
- &dms);
-
- csrow->first_page = mba_base >> PAGE_SHIFT;
- csrow->nr_pages = (mba_mask + 1) >> PAGE_SHIFT;
- csrow->last_page = csrow->first_page + csrow->nr_pages - 1;
- csrow->page_mask = mba_mask >> PAGE_SHIFT;
- csrow->grain = csrow->nr_pages << PAGE_SHIFT;
- csrow->mtype = MEM_RDDR;
- csrow->dtype = ((dms >> index) & 0x1) ? DEV_X4 : DEV_UNKNOWN;
- csrow->edac_mode = ems_modes[ems_mode];
- }
+ amd76x_init_csrows(mci, pdev, ems_modes[ems_mode]);
+ amd76x_get_error_info(mci, &discard); /* clear counters */
- /* clear counters */
- pci_write_bits32(mci->pdev, AMD76X_ECC_MODE_STATUS, (u32) (0x3 << 8),
- (u32) (0x3 << 8));
-
- if (edac_mc_add_mc(mci)) {
- debugf3("MC: " __FILE__
- ": %s(): failed edac_mc_add_mc()\n", __func__);
+ /* Here we assume that we will never see multiple instances of this
+ * type of memory controller. The ID is therefore hardcoded to 0.
+ */
+ if (edac_mc_add_mc(mci,0)) {
+ debugf3("%s(): failed edac_mc_add_mc()\n", __func__);
goto fail;
}
/* get this far and it's successful */
- debugf3("MC: " __FILE__ ": %s(): success\n", __func__);
+ debugf3("%s(): success\n", __func__);
return 0;
fail:
- if (mci) {
- if(mci->pdev)
- pci_dev_put(mci->pdev);
- edac_mc_free(mci);
- }
- return rc;
+ edac_mc_free(mci);
+ return -ENODEV;
}
/* returns count (>= 0), or negative on error */
static int __devinit amd76x_init_one(struct pci_dev *pdev,
- const struct pci_device_id *ent)
+ const struct pci_device_id *ent)
{
- debugf0("MC: " __FILE__ ": %s()\n", __func__);
+ debugf0("%s()\n", __func__);
/* don't need to call pci_device_enable() */
return amd76x_probe1(pdev, ent->driver_data);
}
-
/**
* amd76x_remove_one - driver shutdown
* @pdev: PCI device being handed back
* structure for the device then delete the mci and free the
* resources.
*/
-
static void __devexit amd76x_remove_one(struct pci_dev *pdev)
{
struct mem_ctl_info *mci;
- debugf0(__FILE__ ": %s()\n", __func__);
+ debugf0("%s()\n", __func__);
- if ((mci = edac_mc_find_mci_by_pdev(pdev)) == NULL)
- return;
- if (edac_mc_del_mc(mci))
+ if ((mci = edac_mc_del_mc(&pdev->dev)) == NULL)
return;
- pci_dev_put(mci->pdev);
+
edac_mc_free(mci);
}
-
static const struct pci_device_id amd76x_pci_tbl[] __devinitdata = {
- {PCI_VEND_DEV(AMD, FE_GATE_700C), PCI_ANY_ID, PCI_ANY_ID, 0, 0,
- AMD762},
- {PCI_VEND_DEV(AMD, FE_GATE_700E), PCI_ANY_ID, PCI_ANY_ID, 0, 0,
- AMD761},
- {0,} /* 0 terminated list. */
+ {
+ PCI_VEND_DEV(AMD, FE_GATE_700C), PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ AMD762
+ },
+ {
+ PCI_VEND_DEV(AMD, FE_GATE_700E), PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ AMD761
+ },
+ {
+ 0,
+ } /* 0 terminated list. */
};
MODULE_DEVICE_TABLE(pci, amd76x_pci_tbl);
-
static struct pci_driver amd76x_driver = {
- .name = BS_MOD_STR,
+ .name = EDAC_MOD_STR,
.probe = amd76x_init_one,
.remove = __devexit_p(amd76x_remove_one),
.id_table = amd76x_pci_tbl,
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