From: "Ghannam, Yazen" <Yazen.Ghannam@amd.com>
To: "linux-edac@vger.kernel.org" <linux-edac@vger.kernel.org>
Cc: "Ghannam, Yazen" <Yazen.Ghannam@amd.com>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"bp@alien8.de" <bp@alien8.de>
Subject: [PATCH v3 1/8] EDAC/amd64: Support more than two controllers for chip selects handling
Date: Wed, 21 Aug 2019 23:59:55 +0000 [thread overview]
Message-ID: <20190821235938.118710-2-Yazen.Ghannam@amd.com> (raw)
In-Reply-To: <20190821235938.118710-1-Yazen.Ghannam@amd.com>
From: Yazen Ghannam <yazen.ghannam@amd.com>
The struct chip_select array that's used for saving chip select bases
and masks is fixed at length of two. There should be one struct
chip_select for each controller, so this array should be increased to
support systems that may have more than two controllers.
Increase the size of the struct chip_select array to eight, which is the
largest number of controllers per die currently supported on AMD
systems.
Fix number of DIMMs and Chip Select bases/masks on Family17h, because AMD
Family 17h systems support 2 DIMMs, 4 CS bases, and 2 CS masks per
channel.
Also, carve out the Family 17h+ reading of the bases/masks into a
separate function. This effectively reverts the original bases/masks
reading code to before Family 17h support was added.
This is a second version of a commit that was reverted.
Signed-off-by: Yazen Ghannam <yazen.ghannam@amd.com>
---
Link:
https://lkml.kernel.org/r/20190709215643.171078-2-Yazen.Ghannam@amd.com
v2->v3:
* Drop Fixes: tags.
v1->v2:
* Patches 1 and 2 squashed together.
drivers/edac/amd64_edac.c | 123 +++++++++++++++++++++-----------------
drivers/edac/amd64_edac.h | 5 +-
2 files changed, 71 insertions(+), 57 deletions(-)
diff --git a/drivers/edac/amd64_edac.c b/drivers/edac/amd64_edac.c
index 873437be86d9..dd60cf5a3d96 100644
--- a/drivers/edac/amd64_edac.c
+++ b/drivers/edac/amd64_edac.c
@@ -810,7 +810,7 @@ static void debug_display_dimm_sizes_df(struct amd64_pvt *pvt, u8 ctrl)
edac_printk(KERN_DEBUG, EDAC_MC, "UMC%d chip selects:\n", ctrl);
- for (dimm = 0; dimm < 4; dimm++) {
+ for (dimm = 0; dimm < 2; dimm++) {
size0 = 0;
cs0 = dimm * 2;
@@ -942,89 +942,102 @@ static void prep_chip_selects(struct amd64_pvt *pvt)
} else if (pvt->fam == 0x15 && pvt->model == 0x30) {
pvt->csels[0].b_cnt = pvt->csels[1].b_cnt = 4;
pvt->csels[0].m_cnt = pvt->csels[1].m_cnt = 2;
+ } else if (pvt->fam >= 0x17) {
+ int umc;
+
+ for_each_umc(umc) {
+ pvt->csels[umc].b_cnt = 4;
+ pvt->csels[umc].m_cnt = 2;
+ }
+
} else {
pvt->csels[0].b_cnt = pvt->csels[1].b_cnt = 8;
pvt->csels[0].m_cnt = pvt->csels[1].m_cnt = 4;
}
}
+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;
+ int cs, umc;
+
+ for_each_umc(umc) {
+ umc_base_reg = get_umc_base(umc) + UMCCH_BASE_ADDR;
+
+ for_each_chip_select(cs, umc, pvt) {
+ base = &pvt->csels[umc].csbases[cs];
+
+ base_reg = umc_base_reg + (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);
+ }
+
+ umc_mask_reg = get_umc_base(umc) + UMCCH_ADDR_MASK;
+
+ for_each_chip_select_mask(cs, umc, pvt) {
+ mask = &pvt->csels[umc].csmasks[cs];
+
+ mask_reg = umc_mask_reg + (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);
+ }
+ }
+}
+
/*
* Function 2 Offset F10_DCSB0; read in the DCS Base and DCS Mask registers
*/
static void read_dct_base_mask(struct amd64_pvt *pvt)
{
- int base_reg0, base_reg1, mask_reg0, mask_reg1, cs;
+ int cs;
prep_chip_selects(pvt);
- if (pvt->umc) {
- base_reg0 = get_umc_base(0) + UMCCH_BASE_ADDR;
- base_reg1 = get_umc_base(1) + UMCCH_BASE_ADDR;
- mask_reg0 = get_umc_base(0) + UMCCH_ADDR_MASK;
- mask_reg1 = get_umc_base(1) + UMCCH_ADDR_MASK;
- } else {
- base_reg0 = DCSB0;
- base_reg1 = DCSB1;
- mask_reg0 = DCSM0;
- mask_reg1 = DCSM1;
- }
+ if (pvt->umc)
+ return read_umc_base_mask(pvt);
for_each_chip_select(cs, 0, pvt) {
- int reg0 = base_reg0 + (cs * 4);
- int reg1 = base_reg1 + (cs * 4);
+ int reg0 = DCSB0 + (cs * 4);
+ int reg1 = DCSB1 + (cs * 4);
u32 *base0 = &pvt->csels[0].csbases[cs];
u32 *base1 = &pvt->csels[1].csbases[cs];
- if (pvt->umc) {
- if (!amd_smn_read(pvt->mc_node_id, reg0, base0))
- edac_dbg(0, " DCSB0[%d]=0x%08x reg: 0x%x\n",
- cs, *base0, reg0);
-
- if (!amd_smn_read(pvt->mc_node_id, reg1, base1))
- edac_dbg(0, " DCSB1[%d]=0x%08x reg: 0x%x\n",
- cs, *base1, reg1);
- } else {
- if (!amd64_read_dct_pci_cfg(pvt, 0, reg0, base0))
- edac_dbg(0, " DCSB0[%d]=0x%08x reg: F2x%x\n",
- cs, *base0, reg0);
+ if (!amd64_read_dct_pci_cfg(pvt, 0, reg0, base0))
+ edac_dbg(0, " DCSB0[%d]=0x%08x reg: F2x%x\n",
+ cs, *base0, reg0);
- if (pvt->fam == 0xf)
- continue;
+ if (pvt->fam == 0xf)
+ continue;
- if (!amd64_read_dct_pci_cfg(pvt, 1, reg0, base1))
- edac_dbg(0, " DCSB1[%d]=0x%08x reg: F2x%x\n",
- cs, *base1, (pvt->fam == 0x10) ? reg1
- : reg0);
- }
+ if (!amd64_read_dct_pci_cfg(pvt, 1, reg0, base1))
+ edac_dbg(0, " DCSB1[%d]=0x%08x reg: F2x%x\n",
+ cs, *base1, (pvt->fam == 0x10) ? reg1
+ : reg0);
}
for_each_chip_select_mask(cs, 0, pvt) {
- int reg0 = mask_reg0 + (cs * 4);
- int reg1 = mask_reg1 + (cs * 4);
+ int reg0 = DCSM0 + (cs * 4);
+ int reg1 = DCSM1 + (cs * 4);
u32 *mask0 = &pvt->csels[0].csmasks[cs];
u32 *mask1 = &pvt->csels[1].csmasks[cs];
- if (pvt->umc) {
- if (!amd_smn_read(pvt->mc_node_id, reg0, mask0))
- edac_dbg(0, " DCSM0[%d]=0x%08x reg: 0x%x\n",
- cs, *mask0, reg0);
-
- if (!amd_smn_read(pvt->mc_node_id, reg1, mask1))
- edac_dbg(0, " DCSM1[%d]=0x%08x reg: 0x%x\n",
- cs, *mask1, reg1);
- } else {
- if (!amd64_read_dct_pci_cfg(pvt, 0, reg0, mask0))
- edac_dbg(0, " DCSM0[%d]=0x%08x reg: F2x%x\n",
- cs, *mask0, reg0);
+ if (!amd64_read_dct_pci_cfg(pvt, 0, reg0, mask0))
+ edac_dbg(0, " DCSM0[%d]=0x%08x reg: F2x%x\n",
+ cs, *mask0, reg0);
- if (pvt->fam == 0xf)
- continue;
+ if (pvt->fam == 0xf)
+ continue;
- if (!amd64_read_dct_pci_cfg(pvt, 1, reg0, mask1))
- edac_dbg(0, " DCSM1[%d]=0x%08x reg: F2x%x\n",
- cs, *mask1, (pvt->fam == 0x10) ? reg1
- : reg0);
- }
+ if (!amd64_read_dct_pci_cfg(pvt, 1, reg0, mask1))
+ edac_dbg(0, " DCSM1[%d]=0x%08x reg: F2x%x\n",
+ cs, *mask1, (pvt->fam == 0x10) ? reg1
+ : reg0);
}
}
diff --git a/drivers/edac/amd64_edac.h b/drivers/edac/amd64_edac.h
index 8f66472f7adc..4dce6a2ac75f 100644
--- a/drivers/edac/amd64_edac.h
+++ b/drivers/edac/amd64_edac.h
@@ -96,6 +96,7 @@
/* Hardware limit on ChipSelect rows per MC and processors per system */
#define NUM_CHIPSELECTS 8
#define DRAM_RANGES 8
+#define NUM_CONTROLLERS 8
#define ON true
#define OFF false
@@ -351,8 +352,8 @@ struct amd64_pvt {
u32 dbam0; /* DRAM Base Address Mapping reg for DCT0 */
u32 dbam1; /* DRAM Base Address Mapping reg for DCT1 */
- /* one for each DCT */
- struct chip_select csels[2];
+ /* one for each DCT/UMC */
+ struct chip_select csels[NUM_CONTROLLERS];
/* DRAM base and limit pairs F1x[78,70,68,60,58,50,48,40] */
struct dram_range ranges[DRAM_RANGES];
--
2.17.1
next prev parent reply other threads:[~2019-08-22 0:00 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-21 23:59 [PATCH v3 0/8] AMD64 EDAC fixes Ghannam, Yazen
2019-08-21 23:59 ` Ghannam, Yazen [this message]
2019-08-21 23:59 ` [PATCH v3 2/8] EDAC/amd64: Recognize DRAM device type with EDAC_CTL_CAP Ghannam, Yazen
2019-08-21 23:59 ` [PATCH v3 3/8] EDAC/amd64: Initialize DIMM info for systems with more than two channels Ghannam, Yazen
2019-08-21 23:59 ` [PATCH v3 4/8] EDAC/amd64: Find Chip Select memory size using Address Mask Ghannam, Yazen
2019-08-22 0:00 ` [PATCH v3 5/8] EDAC/amd64: Decode syndrome before translating address Ghannam, Yazen
2019-08-22 0:00 ` [PATCH v3 6/8] EDAC/amd64: Cache secondary Chip Select registers Ghannam, Yazen
2019-08-22 0:00 ` [RFC PATCH v3 08/10] EDAC/amd64: Gather hardware information early Ghannam, Yazen
2019-08-29 9:22 ` Borislav Petkov
2019-09-06 19:14 ` Ghannam, Yazen
2019-09-06 20:35 ` Borislav Petkov
2019-09-06 20:49 ` Ghannam, Yazen
2019-09-09 15:31 ` Borislav Petkov
2019-08-22 0:00 ` [PATCH v3 7/8] EDAC/amd64: Support Asymmetric Dual-Rank DIMMs Ghannam, Yazen
2019-08-23 11:26 ` Borislav Petkov
2019-08-23 13:27 ` Ghannam, Yazen
2019-08-23 15:11 ` Borislav Petkov
2019-08-22 0:00 ` [RFC PATCH v3 10/10] EDAC/amd64: Check for memory before fully initializing an instance Ghannam, Yazen
2019-08-22 18:51 ` [RFC PATCH v2] " Ghannam, Yazen
2019-08-22 0:00 ` [RFC PATCH v3 09/10] EDAC/amd64: Use cached data when checking for ECC Ghannam, Yazen
2019-08-22 0:50 ` [PATCH v3 0/8] AMD64 EDAC fixes Adam Borowski
2019-08-22 8:35 ` Borislav Petkov
2019-08-22 9:46 ` Adam Borowski
2019-08-22 9:55 ` Borislav Petkov
2019-08-22 18:54 ` Ghannam, Yazen
2019-08-23 15:28 ` Ghannam, Yazen
2019-08-23 15:37 ` Borislav Petkov
2019-08-26 14:19 ` Ghannam, Yazen
2019-08-26 14:59 ` Borislav Petkov
2019-08-26 15:05 ` Ghannam, Yazen
2019-08-22 18:48 ` [RFC PATCH v2] EDAC/amd64: Check for memory before fully initializing an instance Ghannam, Yazen
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