From patchwork Thu Oct 3 15:51:49 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg KH X-Patchwork-Id: 11172871 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 97ED313B1 for ; Thu, 3 Oct 2019 17:00:33 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 6E0722086A for ; Thu, 3 Oct 2019 17:00:33 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1570122033; bh=aF29muMYd0aFbQLCZ8bnN7wOIqz7jZ7RkN0z5SAUhJI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=Y59ErLj8oYYyh/w1SkIYqofkBZt/kYXWNTPQrxyOefhXk8epKpcLNHocM5OSwomBi emVKNQQL/ogxf/Ls1Jqkd1kQgopLEHxaSOFh6plnl9vAmaZwGonzhy6ML15T/2KOZP 7PoBXqfMQuk2NW9BBYge8Vm2mdN5w5Wr5x/nj+uU= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2392546AbfJCQpr (ORCPT ); Thu, 3 Oct 2019 12:45:47 -0400 Received: from mail.kernel.org ([198.145.29.99]:58470 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2392843AbfJCQpr (ORCPT ); Thu, 3 Oct 2019 12:45:47 -0400 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id C101E2070B; Thu, 3 Oct 2019 16:45:45 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1570121146; bh=aF29muMYd0aFbQLCZ8bnN7wOIqz7jZ7RkN0z5SAUhJI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=qjk5o5NChOlvMLU6VCqSUYUMmZxNuWCE5eHqI0eVXRXx7WVEk40yZfcs7cJWpcg+Q IT4zdGDHDvWqt9yEo/z7/1u74ol2E+30UYGfhjaeRnFWQidZVaN1G+mwXy50/28pcd 56VQW0PSO8MOG4Ln6xabx+BqMXFYvgVbhCbDbcoQ= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Yazen Ghannam , Borislav Petkov , "linux-edac@vger.kernel.org" , James Morse , Mauro Carvalho Chehab , Tony Luck , Sasha Levin Subject: [PATCH 5.3 144/344] EDAC/amd64: Support more than two controllers for chip selects handling Date: Thu, 3 Oct 2019 17:51:49 +0200 Message-Id: <20191003154554.464651368@linuxfoundation.org> X-Mailer: git-send-email 2.23.0 In-Reply-To: <20191003154540.062170222@linuxfoundation.org> References: <20191003154540.062170222@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Sender: linux-edac-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-edac@vger.kernel.org From: Yazen Ghannam [ Upstream commit d971e28e2ce4696fcc32998c8aced5e47701fffe ] 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. Signed-off-by: Yazen Ghannam Signed-off-by: Borislav Petkov Cc: "linux-edac@vger.kernel.org" Cc: James Morse Cc: Mauro Carvalho Chehab Cc: Tony Luck Link: https://lkml.kernel.org/r/20190821235938.118710-2-Yazen.Ghannam@amd.com Signed-off-by: Sasha Levin --- 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 873437be86d9c..dd60cf5a3d969 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 8f66472f7adc2..4dce6a2ac75f9 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];