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authorMauro Carvalho Chehab <mchehab@redhat.com>2010-08-27 10:22:36 -0300
committerMauro Carvalho Chehab <mchehab@redhat.com>2010-08-30 14:56:54 -0300
commit57021918aa9c310524d7e9754506e4e8272b4c0e (patch)
treeafa0b4aac5a27ea1c7f9f5b26050ed34d18df487
parent15154c57c62494292f43df9133a7b370cbbf1ecb (diff)
downloadop-kernel-dev-57021918aa9c310524d7e9754506e4e8272b4c0e.zip
op-kernel-dev-57021918aa9c310524d7e9754506e4e8272b4c0e.tar.gz
i7300_edac: Add support for reporting FBD errors
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
-rw-r--r--drivers/edac/i7300_edac.c125
1 files changed, 125 insertions, 0 deletions
diff --git a/drivers/edac/i7300_edac.c b/drivers/edac/i7300_edac.c
index b515225..728f9b0 100644
--- a/drivers/edac/i7300_edac.c
+++ b/drivers/edac/i7300_edac.c
@@ -161,6 +161,63 @@ static const char *numcol_toString[] = {
/************************************************
* i7300 Register definitions for error detection
************************************************/
+
+/*
+ * Device 16.1: FBD Error Registers
+ */
+#define FERR_FAT_FBD 0x98
+static const char *ferr_fat_fbd_name[] = {
+ [22] = "Non-Redundant Fast Reset Timeout",
+ [2] = ">Tmid Thermal event with intelligent throttling disabled",
+ [1] = "Memory or FBD configuration CRC read error",
+ [0] = "Memory Write error on non-redundant retry or "
+ "FBD configuration Write error on retry",
+};
+#define GET_FBD_FAT_IDX(fbderr) (fbderr & (3 << 28))
+#define FERR_FAT_FBD_ERR_MASK ((1 << 0) | (1 << 1) | (1 << 2) | (1 << 3))
+
+#define FERR_NF_FBD 0xa0
+static const char *ferr_nf_fbd_name[] = {
+ [24] = "DIMM-Spare Copy Completed",
+ [23] = "DIMM-Spare Copy Initiated",
+ [22] = "Redundant Fast Reset Timeout",
+ [21] = "Memory Write error on redundant retry",
+ [18] = "SPD protocol Error",
+ [17] = "FBD Northbound parity error on FBD Sync Status",
+ [16] = "Correctable Patrol Data ECC",
+ [15] = "Correctable Resilver- or Spare-Copy Data ECC",
+ [14] = "Correctable Mirrored Demand Data ECC",
+ [13] = "Correctable Non-Mirrored Demand Data ECC",
+ [11] = "Memory or FBD configuration CRC read error",
+ [10] = "FBD Configuration Write error on first attempt",
+ [9] = "Memory Write error on first attempt",
+ [8] = "Non-Aliased Uncorrectable Patrol Data ECC",
+ [7] = "Non-Aliased Uncorrectable Resilver- or Spare-Copy Data ECC",
+ [6] = "Non-Aliased Uncorrectable Mirrored Demand Data ECC",
+ [5] = "Non-Aliased Uncorrectable Non-Mirrored Demand Data ECC",
+ [4] = "Aliased Uncorrectable Patrol Data ECC",
+ [3] = "Aliased Uncorrectable Resilver- or Spare-Copy Data ECC",
+ [2] = "Aliased Uncorrectable Mirrored Demand Data ECC",
+ [1] = "Aliased Uncorrectable Non-Mirrored Demand Data ECC",
+ [0] = "Uncorrectable Data ECC on Replay",
+};
+#define GET_FBD_NF_IDX(fbderr) (fbderr & (3 << 28))
+#define FERR_NF_FBD_ERR_MASK ((1 << 24) | (1 << 23) | (1 << 22) | (1 << 21) |\
+ (1 << 18) | (1 << 17) | (1 << 16) | (1 << 15) |\
+ (1 << 14) | (1 << 13) | (1 << 11) | (1 << 10) |\
+ (1 << 9) | (1 << 8) | (1 << 7) | (1 << 6) |\
+ (1 << 5) | (1 << 4) | (1 << 3) | (1 << 2) |\
+ (1 << 1) | (1 << 0))
+
+#define EMASK_FBD 0xa8
+#define EMASK_FBD_ERR_MASK ((1 << 27) | (1 << 26) | (1 << 25) | (1 << 24) |\
+ (1 << 22) | (1 << 21) | (1 << 20) | (1 << 19) |\
+ (1 << 18) | (1 << 17) | (1 << 16) | (1 << 14) |\
+ (1 << 13) | (1 << 12) | (1 << 11) | (1 << 10) |\
+ (1 << 9) | (1 << 8) | (1 << 7) | (1 << 6) |\
+ (1 << 5) | (1 << 4) | (1 << 3) | (1 << 2) |\
+ (1 << 1) | (1 << 0))
+
/*
* Device 16.2: Global Error Registers
*/
@@ -339,6 +396,61 @@ error_global:
}
/*
+ * i7300_process_fbd_error Retrieve the hardware error information from
+ * the hardware and cache it in the 'info'
+ * structure
+ */
+static void i7300_process_fbd_error(struct mem_ctl_info *mci,
+ struct i7300_error_info *info)
+{
+ struct i7300_pvt *pvt;
+ u32 errnum, value;
+ int branch;
+ unsigned long errors;
+ const char *specific;
+ bool is_fatal;
+
+ pvt = mci->pvt_info;
+
+ /* read in the 1st FATAL error register */
+ pci_read_config_dword(pvt->pci_dev_16_1_fsb_addr_map,
+ FERR_FAT_FBD, &value);
+ if (unlikely(value & FERR_FAT_FBD_ERR_MASK)) {
+ errors = value & FERR_FAT_FBD_ERR_MASK ;
+ errnum = find_first_bit(&errors,
+ ARRAY_SIZE(ferr_fat_fbd_name));
+ specific = GET_ERR_FROM_TABLE(ferr_fat_fbd_name, errnum);
+ is_fatal = 1;
+
+ branch = (GET_FBD_FAT_IDX(value) == 2) ? 1 : 0;
+
+ goto error_fbd;
+ }
+
+ /* read in the 1st NON-FATAL error register */
+ pci_read_config_dword(pvt->pci_dev_16_1_fsb_addr_map,
+ FERR_NF_FBD, &value);
+ if (unlikely(value & FERR_NF_FBD_ERR_MASK)) {
+ errors = value & FERR_NF_FBD_ERR_MASK;
+ errnum = find_first_bit(&errors,
+ ARRAY_SIZE(ferr_nf_fbd_name));
+ specific = GET_ERR_FROM_TABLE(ferr_nf_fbd_name, errnum);
+ is_fatal = 0;
+
+ /* Clear the error bit */
+ pci_write_config_dword(pvt->pci_dev_16_2_fsb_err_regs,
+ FERR_GLOBAL_LO, value);
+
+ goto error_fbd;
+ }
+ return;
+
+error_fbd:
+ i7300_mc_printk(mci, KERN_EMERG, "%s FBD error on branch %d: %s\n",
+ is_fatal ? "Fatal" : "NOT fatal", branch, specific);
+}
+
+/*
* i7300_process_error_info Retrieve the hardware error information from
* the hardware and cache it in the 'info'
* structure
@@ -347,6 +459,7 @@ static void i7300_process_error_info(struct mem_ctl_info *mci,
struct i7300_error_info *info)
{
i7300_process_error_global(mci, info);
+ i7300_process_fbd_error(mci, info);
};
/*
@@ -381,6 +494,18 @@ static void i7300_check_error(struct mem_ctl_info *mci)
*/
static void i7300_enable_error_reporting(struct mem_ctl_info *mci)
{
+ struct i7300_pvt *pvt = mci->pvt_info;
+ u32 fbd_error_mask;
+
+ /* Read the FBD Error Mask Register */
+ pci_read_config_dword(pvt->pci_dev_16_1_fsb_addr_map,
+ EMASK_FBD, &fbd_error_mask);
+
+ /* Enable with a '0' */
+ fbd_error_mask &= ~(EMASK_FBD_ERR_MASK);
+
+ pci_write_config_dword(pvt->pci_dev_16_1_fsb_addr_map,
+ EMASK_FBD, fbd_error_mask);
}
/************************************************
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