sb_edac: allow different dram_rule arrays

This is in preparation for Ivy Bridge support

Signed-off-by: Aristeu Rozanski <arozansk@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>

1 files changed, 14 insertions, 11 deletions

diff --git a/drivers/edac/sb_edac.c b/drivers/edac/sb_edac.c
index 4ec4957b484c..c42dec232507 100644
--- a/drivers/edac/sb_edac.c
+++ b/drivers/edac/sb_edac.c
@@ -83,11 +83,10 @@ static int probed;
 #define PCI_DEVICE_ID_INTEL_SBRIDGE_IMC_ERR3    0x3c77  /* 16.7 */
 
 /* Devices 12 Function 6, Offsets 0x80 to 0xcc */
-static const u32 dram_rule[] = {
+static const u32 sbridge_dram_rule[] = {
         0x80, 0x88, 0x90, 0x98, 0xa0,
         0xa8, 0xb0, 0xb8, 0xc0, 0xc8,
 };
-#define MAX_SAD         ARRAY_SIZE(dram_rule)
 
 #define SAD_LIMIT(reg)          ((GET_BITFIELD(reg, 6, 25) << 26) | 0x3ffffff)
 #define DRAM_ATTR(reg)          GET_BITFIELD(reg, 2,  3)
@@ -275,10 +274,12 @@ static const u32 correrrthrsld[] = {
 
 struct sbridge_pvt;
 struct sbridge_info {
-        u32     mcmtr;
-        u32     rankcfgr;
-        u64     (*get_tolm)(struct sbridge_pvt *pvt);
-        u64     (*get_tohm)(struct sbridge_pvt *pvt);
+        u32             mcmtr;
+        u32             rankcfgr;
+        u64             (*get_tolm)(struct sbridge_pvt *pvt);
+        u64             (*get_tohm)(struct sbridge_pvt *pvt);
+        const u32       *dram_rule;
+        u8              max_sad;
 };
 
 struct sbridge_channel {
@@ -673,9 +674,9 @@ static void get_memory_layout(const struct mem_ctl_info *mci)
          * algorithm bellow.
          */
         prv = 0;
-        for (n_sads = 0; n_sads < MAX_SAD; n_sads++) {
+        for (n_sads = 0; n_sads < pvt->info.max_sad; n_sads++) {
                 /* SAD_LIMIT Address range is 45:26 */
-                pci_read_config_dword(pvt->pci_sad0, dram_rule[n_sads],
+                pci_read_config_dword(pvt->pci_sad0, pvt->info.dram_rule[n_sads],
                                       &reg);
                 limit = SAD_LIMIT(reg);
 
@@ -847,8 +848,8 @@ static int get_memory_error_data(struct mem_ctl_info *mci,
         /*
          * Step 1) Get socket
          */
-        for (n_sads = 0; n_sads < MAX_SAD; n_sads++) {
-                pci_read_config_dword(pvt->pci_sad0, dram_rule[n_sads],
+        for (n_sads = 0; n_sads < pvt->info.max_sad; n_sads++) {
+                pci_read_config_dword(pvt->pci_sad0, pvt->info.dram_rule[n_sads],
                                       &reg);
 
                 if (!DRAM_RULE_ENABLE(reg))
@@ -863,7 +864,7 @@ static int get_memory_error_data(struct mem_ctl_info *mci,
                         break;
                 prv = limit;
         }
-        if (n_sads == MAX_SAD) {
+        if (n_sads == pvt->info.max_sad) {
                 sprintf(msg, "Can't discover the memory socket");
                 return -EINVAL;
         }
@@ -1678,6 +1679,8 @@ static int sbridge_register_mci(struct sbridge_dev *sbridge_dev)
         mci->ctl_page_to_phys = NULL;
         pvt->info.get_tolm = sbridge_get_tolm;
         pvt->info.get_tohm = sbridge_get_tohm;
+        pvt->info.dram_rule = sbridge_dram_rule;
+        pvt->info.max_sad = ARRAY_SIZE(sbridge_dram_rule);
 
         /* Set the function pointer to an actual operation function */
         mci->edac_check = sbridge_check_error;