From 8de9930a4618811edfaebc4981a9fafff2af9170 Mon Sep 17 00:00:00 2001 From: Borislav Petkov Date: Thu, 25 Apr 2019 16:30:34 +0200 Subject: [PATCH] Revert "EDAC/amd64: Support more than two controllers for chip select handling" This reverts commit 0a227af521d6df5286550b62f4b591417170b4ea. Unfortunately, this commit caused wrong detection of chip select sizes on some F17h client machines: --- 00-rc6+ 2019-02-14 14:28:03.126622904 +0100 +++ 01-rc4+ 2019-04-14 21:06:16.060614790 +0200 EDAC amd64: MC: 0: 0MB 1: 0MB -EDAC amd64: MC: 2: 16383MB 3: 16383MB +EDAC amd64: MC: 2: 0MB 3: 2097151MB EDAC amd64: MC: 4: 0MB 5: 0MB EDAC amd64: MC: 6: 0MB 7: 0MB EDAC MC: UMC1 chip selects: EDAC amd64: MC: 0: 0MB 1: 0MB -EDAC amd64: MC: 2: 16383MB 3: 16383MB +EDAC amd64: MC: 2: 0MB 3: 2097151MB EDAC amd64: MC: 4: 0MB 5: 0MB EDAC amd64: MC: 6: 0MB 7: 0M Revert it for now until it has been solved properly. Signed-off-by: Borislav Petkov Cc: Yazen Ghannam --- drivers/edac/amd64_edac.c | 113 ++++++++++++++++++-------------------- drivers/edac/amd64_edac.h | 5 +- 2 files changed, 56 insertions(+), 62 deletions(-) diff --git a/drivers/edac/amd64_edac.c b/drivers/edac/amd64_edac.c index 4c0239aeff2f..e2a99466faaa 100644 --- a/drivers/edac/amd64_edac.c +++ b/drivers/edac/amd64_edac.c @@ -941,94 +941,89 @@ 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 = 8; - pvt->csels[umc].m_cnt = 4; - } - } 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) -{ - int cs, umc; - - for_each_umc(umc) { - u32 umc_base_reg = get_umc_base(umc) + UMCCH_BASE_ADDR; - u32 umc_mask_reg = get_umc_base(umc) + UMCCH_ADDR_MASK; - - for_each_chip_select(cs, 0, pvt) { - u32 *base = &pvt->csels[umc].csbases[cs]; - u32 *mask = &pvt->csels[umc].csmasks[cs]; - - u32 base_reg = umc_base_reg + (cs * 4); - u32 mask_reg = umc_mask_reg + ((cs >> 1) * 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, 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 cs; + int base_reg0, base_reg1, mask_reg0, mask_reg1, cs; prep_chip_selects(pvt); - if (pvt->umc) - return read_umc_base_mask(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; + } for_each_chip_select(cs, 0, pvt) { - int reg0 = DCSB0 + (cs * 4); - int reg1 = DCSB1 + (cs * 4); + int reg0 = base_reg0 + (cs * 4); + int reg1 = base_reg1 + (cs * 4); u32 *base0 = &pvt->csels[0].csbases[cs]; u32 *base1 = &pvt->csels[1].csbases[cs]; - 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->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 (pvt->fam == 0xf) - continue; + 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, 1, reg0, base1)) - edac_dbg(0, " DCSB1[%d]=0x%08x reg: F2x%x\n", - cs, *base1, (pvt->fam == 0x10) ? reg1 - : reg0); + 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); + } } for_each_chip_select_mask(cs, 0, pvt) { - int reg0 = DCSM0 + (cs * 4); - int reg1 = DCSM1 + (cs * 4); + int reg0 = mask_reg0 + (cs * 4); + int reg1 = mask_reg1 + (cs * 4); u32 *mask0 = &pvt->csels[0].csmasks[cs]; u32 *mask1 = &pvt->csels[1].csmasks[cs]; - 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->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 (pvt->fam == 0xf) - continue; + 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, 1, reg0, mask1)) - edac_dbg(0, " DCSM1[%d]=0x%08x reg: F2x%x\n", - cs, *mask1, (pvt->fam == 0x10) ? reg1 - : reg0); + 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); + } } } diff --git a/drivers/edac/amd64_edac.h b/drivers/edac/amd64_edac.h index 4dce6a2ac75f..8f66472f7adc 100644 --- a/drivers/edac/amd64_edac.h +++ b/drivers/edac/amd64_edac.h @@ -96,7 +96,6 @@ /* 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 @@ -352,8 +351,8 @@ 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/UMC */ - struct chip_select csels[NUM_CONTROLLERS]; + /* one for each DCT */ + struct chip_select csels[2]; /* DRAM base and limit pairs F1x[78,70,68,60,58,50,48,40] */ struct dram_range ranges[DRAM_RANGES];