diff options
| author | Yazen Ghannam <yazen.ghannam@amd.com> | 2019-08-22 02:00:02 +0200 |
|---|---|---|
| committer | Borislav Petkov <bp@suse.de> | 2019-08-23 16:09:52 +0200 |
| commit | 81f5090db843be897414418c24fe472fa6e082b6 (patch) | |
| tree | 5f8ff7ca5c5d5f8c7ad311caa452f446a3b19a00 /drivers/edac/amd64_edac.h | |
| parent | EDAC/amd64: Cache secondary Chip Select registers (diff) | |
| download | linux-81f5090db843be897414418c24fe472fa6e082b6.tar.xz linux-81f5090db843be897414418c24fe472fa6e082b6.zip | |
EDAC/amd64: Support asymmetric dual-rank DIMMs
Future AMD systems will support asymmetric dual-rank DIMMs. These are
DIMMs where the ranks are of different sizes.
The even rank will use the Primary Even Chip Select registers and the
odd rank will use the Secondary Odd Chip Select registers.
Recognize if a Secondary Odd Chip Select is being used. Use the
Secondary Odd Address Mask when calculating the chip select size.
[ bp: move csrow_sec_enabled() to the header, fix CS_ODD define and
tone-down the capitalized words spelling. ]
Signed-off-by: Yazen Ghannam <yazen.ghannam@amd.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: "linux-edac@vger.kernel.org" <linux-edac@vger.kernel.org>
Cc: James Morse <james.morse@arm.com>
Cc: Mauro Carvalho Chehab <mchehab@kernel.org>
Cc: Tony Luck <tony.luck@intel.com>
Link: https://lkml.kernel.org/r/20190821235938.118710-8-Yazen.Ghannam@amd.com
Diffstat (limited to 'drivers/edac/amd64_edac.h')
| -rw-r--r-- | drivers/edac/amd64_edac.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/edac/amd64_edac.h b/drivers/edac/amd64_edac.h index 68f12de6e654..8addc4d95577 100644 --- a/drivers/edac/amd64_edac.h +++ b/drivers/edac/amd64_edac.h @@ -169,7 +169,8 @@ #define DCSM0 0x60 #define DCSM1 0x160 -#define csrow_enabled(i, dct, pvt) ((pvt)->csels[(dct)].csbases[(i)] & DCSB_CS_ENABLE) +#define csrow_enabled(i, dct, pvt) ((pvt)->csels[(dct)].csbases[(i)] & DCSB_CS_ENABLE) +#define csrow_sec_enabled(i, dct, pvt) ((pvt)->csels[(dct)].csbases_sec[(i)] & DCSB_CS_ENABLE) #define DRAM_CONTROL 0x78 |