i7300_edac: Detect if the device is on single mode
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/drivers/edac/i7300_edac.c b/drivers/edac/i7300_edac.c
index 27088af..a88742a 100644
--- a/drivers/edac/i7300_edac.c
+++ b/drivers/edac/i7300_edac.c
@@ -92,12 +92,13 @@
/* OFFSETS for Function 1 */
#define MC_SETTINGS 0x40
+ #define IS_MIRRORED(mc) ((mc) & (1 << 16))
+ #define IS_ECC_ENABLED(mc) ((mc) & (1 << 5))
+ #define IS_RETRY_ENABLED(mc) ((mc) & (1 << 31))
+ #define IS_SCRBALGO_ENHANCED(mc) ((mc) & (1 << 8))
-#define IS_MIRRORED(mc) ((mc) & (1 << 16))
-#define IS_ECC_ENABLED(mc) ((mc) & (1 << 5))
-#define IS_RETRY_ENABLED(mc) ((mc) & (1 << 31))
-#define IS_SCRBALGO_ENHANCED(mc) ((mc) & (1 << 8))
-
+#define MC_SETTINGS_A 0x58
+ #define IS_SINGLE_MODE(mca) ((mca) & (1 << 14))
#define TOLM 0x6C
#define REDMEMB 0x7C
@@ -237,9 +238,11 @@
u16 tolm; /* top of low memory */
u64 ambase; /* AMB BAR */
- u32 mc_settings;
- u16 mir[MAX_MIR];
+ u32 mc_settings; /* Report several settings */
+ u32 mc_settings_a;
+
+ u16 mir[MAX_MIR]; /* Memory Interleave Reg*/
u16 mtr[MAX_SLOTS][MAX_BRANCHES]; /* Memory Technlogy Reg */
u16 ambpresent[MAX_CHANNELS]; /* AMB present regs */
@@ -653,9 +656,15 @@
/* Get memory controller settings */
pci_read_config_dword(pvt->pci_dev_16_1_fsb_addr_map, MC_SETTINGS,
&pvt->mc_settings);
+ pci_read_config_dword(pvt->pci_dev_16_1_fsb_addr_map, MC_SETTINGS_A,
+ &pvt->mc_settings_a);
- debugf0("Memory controller operating on %s mode\n",
+ if (IS_SINGLE_MODE(pvt->mc_settings_a))
+ debugf0("Memory controller operating on single mode\n");
+ else
+ debugf0("Memory controller operating on %s mode\n",
IS_MIRRORED(pvt->mc_settings) ? "mirrored" : "non-mirrored");
+
debugf0("Error detection is %s\n",
IS_ECC_ENABLED(pvt->mc_settings) ? "enabled" : "disabled");
debugf0("Retry is %s\n",