edac:i82975x fix 32bit compile and cleanup
the clean up achieves:
1. fix warning on 32-bit compile
2. reorder info extraction for clarity
3. add error-trap diagnostic message
4. handle ALL modes of memory configurations
Signed-off-by: Arvind R. <arvino55@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
diff --git a/drivers/edac/i82975x_edac.c b/drivers/edac/i82975x_edac.c
index a5da732..4184e01 100644
--- a/drivers/edac/i82975x_edac.c
+++ b/drivers/edac/i82975x_edac.c
@@ -277,11 +277,9 @@
static int i82975x_process_error_info(struct mem_ctl_info *mci,
struct i82975x_error_info *info, int handle_errors)
{
- int row, multi_chan, chan;
+ int row, chan;
unsigned long offst, page;
- multi_chan = mci->csrows[0].nr_channels - 1;
-
if (!(info->errsts2 & 0x0003))
return 0;
@@ -294,20 +292,30 @@
}
page = (unsigned long) info->eap;
- if (info->xeap & 1)
- page |= 0x100000000ul;
- chan = page & 1;
page >>= 1;
- offst = page & ((1 << PAGE_SHIFT) - 1);
- page >>= PAGE_SHIFT;
+ if (info->xeap & 1)
+ page |= 0x80000000;
+ page >>= (PAGE_SHIFT - 1);
row = edac_mc_find_csrow_by_page(mci, page);
+ if (row == -1) {
+ i82975x_mc_printk(mci, KERN_ERR, "error processing EAP:\n"
+ "\tXEAP=%u\n"
+ "\t EAP=0x%08x\n"
+ "\tPAGE=0x%08x\n",
+ (info->xeap & 1) ? 1 : 0, info->eap, (unsigned int) page);
+ return 0;
+ }
+ chan = (mci->csrows[row].nr_channels == 1) ? 0 : info->eap & 1;
+ offst = info->eap
+ & ((1 << PAGE_SHIFT) -
+ (1 << mci->csrows[row].grain));
+
if (info->errsts & 0x0002)
edac_mc_handle_ue(mci, page, offst , row, "i82975x UE");
else
edac_mc_handle_ce(mci, page, offst, info->derrsyn, row,
- multi_chan ? chan : 0,
- "i82975x CE");
+ chan, "i82975x CE");
return 1;
}
@@ -410,7 +418,7 @@
csrow->last_page = cumul_size - 1;
csrow->nr_pages = cumul_size - last_cumul_size;
last_cumul_size = cumul_size;
- csrow->grain = 1 << 6; /* I82975X_EAP has 64B resolution */
+ csrow->grain = 1 << 7; /* 128Byte cache-line resolution */
csrow->mtype = MEM_DDR2; /* I82975x supports only DDR2 */
csrow->dtype = i82975x_dram_type(mch_window, index);
csrow->edac_mode = EDAC_SECDED; /* only supported */