From: Yazen Ghannam yazen.ghannam@amd.com
mainline inclusion from mainline-v5.4-rc1 commit 7574729e91468d568cc198de438feb35ef04f41a category: feature bugzilla: https://gitee.com/openeuler/kernel/issues/I4MKP4 CVE: NA
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AMD Family 17h systems have a set of secondary Chip Select Base Addresses and Address Masks. These do not represent unique Chip Selects, rather they are used in conjunction with the primary Chip Select registers in certain cases.
Cache these secondary Chip Select registers for future use.
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/20190821235938.118710-7-Yazen.Ghannam@amd.com Signed-off-by: Jackie Liu liuyun01@kylinos.cn #openEuler_contributor Signed-off-by: Laibin Qiu qiulaibin@huawei.com Reviewed-by: Xiongfeng Wang wangxiongfeng2@huawei.com Signed-off-by: Yang Yingliang yangyingliang@huawei.com --- drivers/edac/amd64_edac.c | 23 ++++++++++++++++++++--- drivers/edac/amd64_edac.h | 4 ++++ 2 files changed, 24 insertions(+), 3 deletions(-)
diff --git a/drivers/edac/amd64_edac.c b/drivers/edac/amd64_edac.c index b62a3d17aa183..a5dda6357d992 100644 --- a/drivers/edac/amd64_edac.c +++ b/drivers/edac/amd64_edac.c @@ -938,34 +938,51 @@ static void prep_chip_selects(struct amd64_pvt *pvt)
static void read_umc_base_mask(struct amd64_pvt *pvt) { - u32 umc_base_reg, umc_mask_reg; - u32 base_reg, mask_reg; - u32 *base, *mask; + u32 umc_base_reg, umc_base_reg_sec; + u32 umc_mask_reg, umc_mask_reg_sec; + u32 base_reg, base_reg_sec; + u32 mask_reg, mask_reg_sec; + u32 *base, *base_sec; + u32 *mask, *mask_sec; int cs, umc;
for_each_umc(umc) { umc_base_reg = get_umc_base(umc) + UMCCH_BASE_ADDR; + umc_base_reg_sec = get_umc_base(umc) + UMCCH_BASE_ADDR_SEC;
for_each_chip_select(cs, umc, pvt) { base = &pvt->csels[umc].csbases[cs]; + base_sec = &pvt->csels[umc].csbases_sec[cs];
base_reg = umc_base_reg + (cs * 4); + base_reg_sec = umc_base_reg_sec + (cs * 4);
if (!amd_smn_read(pvt->mc_node_id, base_reg, base)) edac_dbg(0, " DCSB%d[%d]=0x%08x reg: 0x%x\n", umc, cs, *base, base_reg); + + if (!amd_smn_read(pvt->mc_node_id, base_reg_sec, base_sec)) + edac_dbg(0, " DCSB_SEC%d[%d]=0x%08x reg: 0x%x\n", + umc, cs, *base_sec, base_reg_sec); }
umc_mask_reg = get_umc_base(umc) + UMCCH_ADDR_MASK; + umc_mask_reg_sec = get_umc_base(umc) + UMCCH_ADDR_MASK_SEC;
for_each_chip_select_mask(cs, umc, pvt) { mask = &pvt->csels[umc].csmasks[cs]; + mask_sec = &pvt->csels[umc].csmasks_sec[cs];
mask_reg = umc_mask_reg + (cs * 4); + mask_reg_sec = umc_mask_reg_sec + (cs * 4);
if (!amd_smn_read(pvt->mc_node_id, mask_reg, mask)) edac_dbg(0, " DCSM%d[%d]=0x%08x reg: 0x%x\n", umc, cs, *mask, mask_reg); + + if (!amd_smn_read(pvt->mc_node_id, mask_reg_sec, mask_sec)) + edac_dbg(0, " DCSM_SEC%d[%d]=0x%08x reg: 0x%x\n", + umc, cs, *mask_sec, mask_reg_sec); } } } diff --git a/drivers/edac/amd64_edac.h b/drivers/edac/amd64_edac.h index d8c79c9465df7..338d78404ed87 100644 --- a/drivers/edac/amd64_edac.h +++ b/drivers/edac/amd64_edac.h @@ -261,7 +261,9 @@
/* UMC CH register offsets */ #define UMCCH_BASE_ADDR 0x0 +#define UMCCH_BASE_ADDR_SEC 0x10 #define UMCCH_ADDR_MASK 0x20 +#define UMCCH_ADDR_MASK_SEC 0x28 #define UMCCH_ADDR_CFG 0x30 #define UMCCH_DIMM_CFG 0x80 #define UMCCH_UMC_CFG 0x100 @@ -315,9 +317,11 @@ struct dram_range { /* A DCT chip selects collection */ struct chip_select { u32 csbases[NUM_CHIPSELECTS]; + u32 csbases_sec[NUM_CHIPSELECTS]; u8 b_cnt;
u32 csmasks[NUM_CHIPSELECTS]; + u32 csmasks_sec[NUM_CHIPSELECTS]; u8 m_cnt; };