From patchwork Tue Apr 27 17:51:36 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jim Quinlan X-Patchwork-Id: 1470837 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=23.128.96.18; helo=vger.kernel.org; envelope-from=linux-pci-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256 header.s=20161025 header.b=ORiN/zPx; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by ozlabs.org (Postfix) with ESMTP id 4FV8Th5FG0z9sXH for ; Wed, 28 Apr 2021 03:51:52 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238665AbhD0Rwf (ORCPT ); Tue, 27 Apr 2021 13:52:35 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43628 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230219AbhD0Rwe (ORCPT ); Tue, 27 Apr 2021 13:52:34 -0400 Received: from mail-pl1-x634.google.com (mail-pl1-x634.google.com [IPv6:2607:f8b0:4864:20::634]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id CA1C4C061574; Tue, 27 Apr 2021 10:51:49 -0700 (PDT) Received: by mail-pl1-x634.google.com with SMTP id e2so26995441plh.8; Tue, 27 Apr 2021 10:51:49 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=7XSm6/qzn9duNJgtAGMhBBSTeeaC2tU96ijTiVyfrw0=; b=ORiN/zPxZxhdaqsrIGlBT/ur3WfsLynWgmFPyXBf4D0Bm2D0t1Coryt9rFPBawWXNv X5hp3Ki0fH75da95sE5A/Fe1DZBMEGTWpTrQU6+BGFVujzcoYjHAwjncxp2B8kfZwz9t Ml0tnEqbzAacbRF+flA+YIlbJ6T8hFfea+n4T9KOenJZVmprB2yFehvwtOEfxlQGXm9n X3MkwWBjvRzbytfcS0M8thcVtrkM/kD8/Pp3YCBSJWtGUYAPTiqzKI/fiRvRLEX+32g3 aw9+h+0Q7nQpRjvFi9OAnMsL7hohfAIQuejxsoZqGg+STUagRiRC6lMcaElpBZ7Iettb +KHw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=7XSm6/qzn9duNJgtAGMhBBSTeeaC2tU96ijTiVyfrw0=; b=sj8DkBeiAjhGYBV55kHW9ZZaN0J5Uf7vkgxZJnosyKwWIReGVYymwwrVVbz7skPH+v kaAXnV1YmFPonX/8r2utjWeXfUO5Ue8EXyNhQxGmcQQYTbaBMWzci065APwrG5raxvUy I+piDLJlmHcYpwFTnLGzCFEolUaeW3S+T3QUKhGfAw0/2tMh78eZ5M2KHRsKTamoAn8z OxFT8GZVt6X89t3XOwr7kLei2ah3t4c1vuRN6ltbfiId6REL/hCFl/1j8O/CBlhcQXA8 LH42BH0x5TUW7Yyz52tIXzN47TvTcdwYu6BPWykMO5FdutcJ4ntBO47wiwq/jQIuv50F Derg== X-Gm-Message-State: AOAM532/c8xZRS63X8db/ZyCXH9AX35rVGFeHHe2Jnsn+jlE1aIMoIW2 HsmgN2q19oqXyuh9AN1n14REzqVb0so= X-Google-Smtp-Source: ABdhPJyT7HZQNUAXFGxWL8hWisHDSfUuIwmbKZqKOedQH2FPNEW8cz8HwMCds+JC8D7s+KhXGY4TOA== X-Received: by 2002:a17:90a:f195:: with SMTP id bv21mr6241676pjb.56.1619545909205; Tue, 27 Apr 2021 10:51:49 -0700 (PDT) Received: from stbsrv-and-01.and.broadcom.net ([192.19.231.250]) by smtp.gmail.com with ESMTPSA id h21sm2456833pfo.211.2021.04.27.10.51.46 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 27 Apr 2021 10:51:48 -0700 (PDT) From: Jim Quinlan To: linux-pci@vger.kernel.org, Bjorn Helgaas , Nicolas Saenz Julienne , bcm-kernel-feedback-list@broadcom.com, james.quinlan@broadcom.com Cc: Jim Quinlan , Nicolas Saenz Julienne , Lorenzo Pieralisi , Rob Herring , Florian Fainelli , Jim Quinlan , linux-rpi-kernel@lists.infradead.org (moderated list:BROADCOM BCM2711/BCM2835 ARM ARCHITECTURE), linux-arm-kernel@lists.infradead.org (moderated list:BROADCOM BCM2711/BCM2835 ARM ARCHITECTURE), linux-kernel@vger.kernel.org (open list) Subject: [PATCH v1 1/4] PCI: brcmstb: Check return value of clk_prepare_enable() Date: Tue, 27 Apr 2021 13:51:36 -0400 Message-Id: <20210427175140.17800-2-jim2101024@gmail.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20210427175140.17800-1-jim2101024@gmail.com> References: <20210427175140.17800-1-jim2101024@gmail.com> Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org Check for failure of clk_prepare_enable() on device resume. Signed-off-by: Jim Quinlan Acked-by: Florian Fainelli Fixes: 8195b7417018 ("PCI: brcmstb: Add suspend and resume pm_ops") --- drivers/pci/controller/pcie-brcmstb.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/pci/controller/pcie-brcmstb.c b/drivers/pci/controller/pcie-brcmstb.c index e330e6811f0b..4ce1f3a60574 100644 --- a/drivers/pci/controller/pcie-brcmstb.c +++ b/drivers/pci/controller/pcie-brcmstb.c @@ -1161,7 +1161,9 @@ static int brcm_pcie_resume(struct device *dev) int ret; base = pcie->base; - clk_prepare_enable(pcie->clk); + ret = clk_prepare_enable(pcie->clk); + if (ret) + return ret; ret = brcm_phy_start(pcie); if (ret) From patchwork Tue Apr 27 17:51:37 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jim Quinlan X-Patchwork-Id: 1470838 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=23.128.96.18; helo=vger.kernel.org; envelope-from=linux-pci-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256 header.s=20161025 header.b=QdGe6x34; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by ozlabs.org (Postfix) with ESMTP id 4FV8Tl1vsyz9sXh for ; Wed, 28 Apr 2021 03:51:55 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238637AbhD0Rwg (ORCPT ); Tue, 27 Apr 2021 13:52:36 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43638 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S238144AbhD0Rwg (ORCPT ); Tue, 27 Apr 2021 13:52:36 -0400 Received: from mail-pj1-x102b.google.com (mail-pj1-x102b.google.com [IPv6:2607:f8b0:4864:20::102b]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9F64EC061756; Tue, 27 Apr 2021 10:51:52 -0700 (PDT) Received: by mail-pj1-x102b.google.com with SMTP id lr7so13197450pjb.2; Tue, 27 Apr 2021 10:51:52 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=2TeMQIR29LL2unimARSS4Lts2CWaYP5hnwBOgRuHstg=; b=QdGe6x34JJei2d/ron5yM0DJQaJi1jeLsPy+/ZgW8umuLF/6hL54BgrJOy72zTLBjj SaK5FWmffeSlWH5iOk1FAJzl5PWqPNY0lPgOA5SoFwV0/2U0dVHZ0jjDJkB/LW1qInfS wq2eVemAQ6lsSAsYA3EN1hzrNckL75XUZy/osCJ5UlUQCbmfEpjZZocSlIxOYVBx/mZL U/iMQ+0T33Mgv4wd74WTfR7YUksY5jo7JzL6mJ5MNE6JTiIUTDMIl6zX4PT9PejgPwQR r5nEtNC8rKuUUFqSPLFX40vmF4R558O6AWsl/aBxO/vk9eHCR05ZAIhLcyS83em4fyeA 5xTA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=2TeMQIR29LL2unimARSS4Lts2CWaYP5hnwBOgRuHstg=; b=HrgyxdGPCW8npNH1vfQOy8JRycTED6Au7dYGbaVpaLoqpQFA6S730qJjnrooq1wQlO y6X6mpoM9oLnVZbkl1JJZT/X+RAnLqn3EJGouMaMET+xxnSxCXOxAdpRsFUafVZFhKnK dWNuu1rF4ovfLzOflsF79T6ndRtsAbrW2wAD/VHI053vUOY2wivnq+BqRs7MuiVTup+M T58kAN0AsO7486q9Dzj3rVeLn3uDgRiHt7/NZgKAM0Bu4zOkuftk0s55haR24rZ72GA4 IzW9ERmLrF/FWFfKW2SQ+4U8H7hz/1iVSA6oGFp1cXE0IC86MjzZbR7JLkRoZnfl1FxK ELZQ== X-Gm-Message-State: AOAM533eLAnIxsgOC3qECDV5RVxSbhTe9yvTre6cz/icKzUL/YrqL1B2 ++Ps4yXPZFEjV7dxXkK+Yflx9vc5hLs= X-Google-Smtp-Source: ABdhPJx3pj84P+TymUJU7/RCESFFoXJOkjgVGHcMsSz22PuKQmBEfFdZP2cdrdcIWYQSdH7bw/9cXg== X-Received: by 2002:a17:90b:e95:: with SMTP id fv21mr13283405pjb.107.1619545911874; Tue, 27 Apr 2021 10:51:51 -0700 (PDT) Received: from stbsrv-and-01.and.broadcom.net ([192.19.231.250]) by smtp.gmail.com with ESMTPSA id h21sm2456833pfo.211.2021.04.27.10.51.49 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 27 Apr 2021 10:51:51 -0700 (PDT) From: Jim Quinlan To: linux-pci@vger.kernel.org, Bjorn Helgaas , Nicolas Saenz Julienne , bcm-kernel-feedback-list@broadcom.com, james.quinlan@broadcom.com Cc: Jim Quinlan , Nicolas Saenz Julienne , Lorenzo Pieralisi , Rob Herring , Florian Fainelli , linux-rpi-kernel@lists.infradead.org (moderated list:BROADCOM BCM2711/BCM2835 ARM ARCHITECTURE), linux-arm-kernel@lists.infradead.org (moderated list:BROADCOM BCM2711/BCM2835 ARM ARCHITECTURE), linux-kernel@vger.kernel.org (open list) Subject: [PATCH v1 2/4] PCI: brcmstb: Give 7216 SOCs their own config type Date: Tue, 27 Apr 2021 13:51:37 -0400 Message-Id: <20210427175140.17800-3-jim2101024@gmail.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20210427175140.17800-1-jim2101024@gmail.com> References: <20210427175140.17800-1-jim2101024@gmail.com> Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org This distinction is required for an imminent commit. Signed-off-by: Jim Quinlan Acked-by: Florian Fainelli --- drivers/pci/controller/pcie-brcmstb.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/drivers/pci/controller/pcie-brcmstb.c b/drivers/pci/controller/pcie-brcmstb.c index 4ce1f3a60574..3b6a62dd2e72 100644 --- a/drivers/pci/controller/pcie-brcmstb.c +++ b/drivers/pci/controller/pcie-brcmstb.c @@ -257,6 +257,13 @@ static const struct pcie_cfg_data bcm2711_cfg = { .bridge_sw_init_set = brcm_pcie_bridge_sw_init_set_generic, }; +static const struct pcie_cfg_data bcm7216_cfg = { + .offsets = pcie_offset_bcm7278, + .type = BCM7278, + .perst_set = brcm_pcie_perst_set_7278, + .bridge_sw_init_set = brcm_pcie_bridge_sw_init_set_7278, +}; + struct brcm_msi { struct device *dev; void __iomem *base; @@ -1220,7 +1227,7 @@ static const struct of_device_id brcm_pcie_match[] = { { .compatible = "brcm,bcm4908-pcie", .data = &bcm4908_cfg }, { .compatible = "brcm,bcm7211-pcie", .data = &generic_cfg }, { .compatible = "brcm,bcm7278-pcie", .data = &bcm7278_cfg }, - { .compatible = "brcm,bcm7216-pcie", .data = &bcm7278_cfg }, + { .compatible = "brcm,bcm7216-pcie", .data = &bcm7216_cfg }, { .compatible = "brcm,bcm7445-pcie", .data = &generic_cfg }, {}, }; From patchwork Tue Apr 27 17:51:38 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jim Quinlan X-Patchwork-Id: 1470839 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=23.128.96.18; helo=vger.kernel.org; envelope-from=linux-pci-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256 header.s=20161025 header.b=bZqqTgnJ; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by ozlabs.org (Postfix) with ESMTP id 4FV8Tp3swJz9sXH for ; Wed, 28 Apr 2021 03:51:58 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238790AbhD0Rwk (ORCPT ); Tue, 27 Apr 2021 13:52:40 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43660 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S238144AbhD0Rwj (ORCPT ); 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This simple handler determines if the PCIe controller was the cause of the abort and if so, prints out diagnostic info. Example output: brcm-pcie 8b20000.pcie: Error: Mem Acc: 32bit, Read, @0x38000000 brcm-pcie 8b20000.pcie: Type: TO=0 Abt=0 UnspReq=1 AccDsble=0 BadAddr=0 Signed-off-by: Jim Quinlan Acked-by: Florian Fainelli --- drivers/pci/controller/pcie-brcmstb.c | 122 ++++++++++++++++++++++++++ 1 file changed, 122 insertions(+) diff --git a/drivers/pci/controller/pcie-brcmstb.c b/drivers/pci/controller/pcie-brcmstb.c index 3b6a62dd2e72..d3af8d84f0d6 100644 --- a/drivers/pci/controller/pcie-brcmstb.c +++ b/drivers/pci/controller/pcie-brcmstb.c @@ -12,11 +12,13 @@ #include #include #include +#include #include #include #include #include #include +#include #include #include #include @@ -184,6 +186,39 @@ #define PCIE_DVT_PMU_PCIE_PHY_CTRL_DAST_PWRDN_MASK 0x1 #define PCIE_DVT_PMU_PCIE_PHY_CTRL_DAST_PWRDN_SHIFT 0x0 +/* Error report regiseters */ +#define PCIE_OUTB_ERR_TREAT 0x6000 +#define PCIE_OUTB_ERR_TREAT_CONFIG_MASK 0x1 +#define PCIE_OUTB_ERR_TREAT_MEM_MASK 0x2 +#define PCIE_OUTB_ERR_VALID 0x6004 +#define PCIE_OUTB_ERR_CLEAR 0x6008 +#define PCIE_OUTB_ERR_ACC_INFO 0x600c +#define PCIE_OUTB_ERR_ACC_INFO_CFG_ERR_MASK 0x01 +#define PCIE_OUTB_ERR_ACC_INFO_MEM_ERR_MASK 0x02 +#define PCIE_OUTB_ERR_ACC_INFO_TYPE_64_MASK 0x04 +#define PCIE_OUTB_ERR_ACC_INFO_DIR_WRITE_MASK 0x10 +#define PCIE_OUTB_ERR_ACC_INFO_BYTE_LANES_MASK 0xff00 +#define PCIE_OUTB_ERR_ACC_ADDR 0x6010 +#define PCIE_OUTB_ERR_ACC_ADDR_BUS_MASK 0xff00000 +#define PCIE_OUTB_ERR_ACC_ADDR_DEV_MASK 0xf8000 +#define PCIE_OUTB_ERR_ACC_ADDR_FUNC_MASK 0x7000 +#define PCIE_OUTB_ERR_ACC_ADDR_REG_MASK 0xfff +#define PCIE_OUTB_ERR_CFG_CAUSE 0x6014 +#define PCIE_OUTB_ERR_CFG_CAUSE_TIMEOUT_MASK 0x40 +#define PCIE_OUTB_ERR_CFG_CAUSE_ABORT_MASK 0x20 +#define PCIE_OUTB_ERR_CFG_CAUSE_UNSUPP_REQ_MASK 0x10 +#define PCIE_OUTB_ERR_CFG_CAUSE_ACC_TIMEOUT_MASK 0x4 +#define PCIE_OUTB_ERR_CFG_CAUSE_ACC_DISABLED_MASK 0x2 +#define PCIE_OUTB_ERR_CFG_CAUSE_ACC_64BIT__MASK 0x1 +#define PCIE_OUTB_ERR_MEM_ADDR_LO 0x6018 +#define PCIE_OUTB_ERR_MEM_ADDR_HI 0x601c +#define PCIE_OUTB_ERR_MEM_CAUSE 0x6020 +#define PCIE_OUTB_ERR_MEM_CAUSE_TIMEOUT_MASK 0x40 +#define PCIE_OUTB_ERR_MEM_CAUSE_ABORT_MASK 0x20 +#define PCIE_OUTB_ERR_MEM_CAUSE_UNSUPP_REQ_MASK 0x10 +#define PCIE_OUTB_ERR_MEM_CAUSE_ACC_DISABLED_MASK 0x2 +#define PCIE_OUTB_ERR_MEM_CAUSE_BAD_ADDR_MASK 0x1 + /* Forward declarations */ struct brcm_pcie; static inline void brcm_pcie_bridge_sw_init_set_7278(struct brcm_pcie *pcie, u32 val); @@ -215,6 +250,7 @@ struct pcie_cfg_data { const enum pcie_type type; void (*perst_set)(struct brcm_pcie *pcie, u32 val); void (*bridge_sw_init_set)(struct brcm_pcie *pcie, u32 val); + const bool has_err_report; }; static const int pcie_offsets[] = { @@ -262,6 +298,7 @@ static const struct pcie_cfg_data bcm7216_cfg = { .type = BCM7278, .perst_set = brcm_pcie_perst_set_7278, .bridge_sw_init_set = brcm_pcie_bridge_sw_init_set_7278, + .has_err_report = true, }; struct brcm_msi { @@ -302,8 +339,87 @@ struct brcm_pcie { u32 hw_rev; void (*perst_set)(struct brcm_pcie *pcie, u32 val); void (*bridge_sw_init_set)(struct brcm_pcie *pcie, u32 val); + bool has_err_report; + struct notifier_block die_notifier; }; +/* Dump out PCIe errors on die or panic */ +static int dump_pcie_error(struct notifier_block *self, unsigned long v, void *p) +{ + const struct brcm_pcie *pcie = container_of(self, struct brcm_pcie, die_notifier); + void __iomem *base = pcie->base; + int i, is_cfg_err, is_mem_err, lanes; + char *width_str, *direction_str, lanes_str[9]; + u32 info; + + if (readl(base + PCIE_OUTB_ERR_VALID) == 0) + return NOTIFY_DONE; + info = readl(base + PCIE_OUTB_ERR_ACC_INFO); + + + is_cfg_err = !!(info & PCIE_OUTB_ERR_ACC_INFO_CFG_ERR_MASK); + is_mem_err = !!(info & PCIE_OUTB_ERR_ACC_INFO_MEM_ERR_MASK); + width_str = (info & PCIE_OUTB_ERR_ACC_INFO_TYPE_64_MASK) ? "64bit" : "32bit"; + direction_str = (info & PCIE_OUTB_ERR_ACC_INFO_DIR_WRITE_MASK) ? "Write" : "Read"; + lanes = FIELD_GET(PCIE_OUTB_ERR_ACC_INFO_BYTE_LANES_MASK, info); + for (i = 0, lanes_str[8] = 0; i < 8; i++) + lanes_str[i] = (lanes & (1 << i)) ? '1' : '0'; + + if (is_cfg_err) { + u32 cfg_addr = readl(base + PCIE_OUTB_ERR_ACC_ADDR); + u32 cause = readl(base + PCIE_OUTB_ERR_CFG_CAUSE); + int bus = FIELD_GET(PCIE_OUTB_ERR_ACC_ADDR_BUS_MASK, cfg_addr); + int dev = FIELD_GET(PCIE_OUTB_ERR_ACC_ADDR_DEV_MASK, cfg_addr); + int func = FIELD_GET(PCIE_OUTB_ERR_ACC_ADDR_FUNC_MASK, cfg_addr); + int reg = FIELD_GET(PCIE_OUTB_ERR_ACC_ADDR_REG_MASK, cfg_addr); + + dev_err(pcie->dev, "Error: CFG Acc, %s, %s, Bus=%d, Dev=%d, Fun=%d, Reg=0x%x, lanes=%s\n", + width_str, direction_str, bus, dev, func, reg, lanes_str); + dev_err(pcie->dev, " Type: TO=%d Abt=%d UnsupReq=%d AccTO=%d AccDsbld=%d Acc64bit=%d\n", + !!(cause & PCIE_OUTB_ERR_CFG_CAUSE_TIMEOUT_MASK), + !!(cause & PCIE_OUTB_ERR_CFG_CAUSE_ABORT_MASK), + !!(cause & PCIE_OUTB_ERR_CFG_CAUSE_UNSUPP_REQ_MASK), + !!(cause & PCIE_OUTB_ERR_CFG_CAUSE_ACC_TIMEOUT_MASK), + !!(cause & PCIE_OUTB_ERR_CFG_CAUSE_ACC_DISABLED_MASK), + !!(cause & PCIE_OUTB_ERR_CFG_CAUSE_ACC_64BIT__MASK)); + } + + if (is_mem_err) { + u32 cause = readl(base + PCIE_OUTB_ERR_MEM_CAUSE); + u32 lo = readl(base + PCIE_OUTB_ERR_MEM_ADDR_LO); + u32 hi = readl(base + PCIE_OUTB_ERR_MEM_ADDR_HI); + u64 addr = ((u64)hi << 32) | (u64)lo; + + dev_err(pcie->dev, "Error: Mem Acc, %s, %s, @0x%llx, lanes=%s\n", + width_str, direction_str, addr, lanes_str); + dev_err(pcie->dev, " Type: TO=%d Abt=%d UnsupReq=%d AccDsble=%d BadAddr=%d\n", + !!(cause & PCIE_OUTB_ERR_MEM_CAUSE_TIMEOUT_MASK), + !!(cause & PCIE_OUTB_ERR_MEM_CAUSE_ABORT_MASK), + !!(cause & PCIE_OUTB_ERR_MEM_CAUSE_UNSUPP_REQ_MASK), + !!(cause & PCIE_OUTB_ERR_MEM_CAUSE_ACC_DISABLED_MASK), + !!(cause & PCIE_OUTB_ERR_MEM_CAUSE_BAD_ADDR_MASK)); + } + + /* Clear the error */ + writel(1, base + PCIE_OUTB_ERR_CLEAR); + + return NOTIFY_DONE; +} + +static void brcm_register_die_notifiers(struct brcm_pcie *pcie) +{ + pcie->die_notifier.notifier_call = dump_pcie_error; + register_die_notifier(&pcie->die_notifier); + atomic_notifier_chain_register(&panic_notifier_list, &pcie->die_notifier); +} + +static void brcm_unregister_die_notifiers(struct brcm_pcie *pcie) +{ + unregister_die_notifier(&pcie->die_notifier); + atomic_notifier_chain_unregister(&panic_notifier_list, &pcie->die_notifier); + pcie->die_notifier.notifier_call = NULL; +} + /* * This is to convert the size of the inbound "BAR" region to the * non-linear values of PCIE_X_MISC_RC_BAR[123]_CONFIG_LO.SIZE @@ -1216,6 +1332,8 @@ static int brcm_pcie_remove(struct platform_device *pdev) struct pci_host_bridge *bridge = pci_host_bridge_from_priv(pcie); pci_stop_root_bus(bridge->bus); + if (pcie->has_err_report) + brcm_unregister_die_notifiers(pcie); pci_remove_root_bus(bridge->bus); __brcm_pcie_remove(pcie); @@ -1255,6 +1373,7 @@ static int brcm_pcie_probe(struct platform_device *pdev) pcie->np = np; pcie->reg_offsets = data->offsets; pcie->type = data->type; + pcie->has_err_report = data->has_err_report; pcie->perst_set = data->perst_set; pcie->bridge_sw_init_set = data->bridge_sw_init_set; @@ -1322,6 +1441,9 @@ static int brcm_pcie_probe(struct platform_device *pdev) platform_set_drvdata(pdev, pcie); + if (pcie->has_err_report) + brcm_register_die_notifiers(pcie); + return pci_host_probe(bridge); fail: __brcm_pcie_remove(pcie); From patchwork Tue Apr 27 17:51:39 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jim Quinlan X-Patchwork-Id: 1470840 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=23.128.96.18; helo=vger.kernel.org; envelope-from=linux-pci-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256 header.s=20161025 header.b=hPMjlmoO; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by ozlabs.org (Postfix) with ESMTP id 4FV8Ts6th4z9sXH for ; Wed, 28 Apr 2021 03:52:01 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238305AbhD0Rwo (ORCPT ); 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Tue, 27 Apr 2021 10:51:57 -0700 (PDT) From: Jim Quinlan To: linux-pci@vger.kernel.org, Bjorn Helgaas , Nicolas Saenz Julienne , bcm-kernel-feedback-list@broadcom.com, james.quinlan@broadcom.com Cc: Jim Quinlan , Nicolas Saenz Julienne , Lorenzo Pieralisi , Rob Herring , Florian Fainelli , linux-rpi-kernel@lists.infradead.org (moderated list:BROADCOM BCM2711/BCM2835 ARM ARCHITECTURE), linux-arm-kernel@lists.infradead.org (moderated list:BROADCOM BCM2711/BCM2835 ARM ARCHITECTURE), linux-kernel@vger.kernel.org (open list) Subject: [PATCH v1 4/4] PCI: brcmstb: add shutdown call to driver Date: Tue, 27 Apr 2021 13:51:39 -0400 Message-Id: <20210427175140.17800-5-jim2101024@gmail.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20210427175140.17800-1-jim2101024@gmail.com> References: <20210427175140.17800-1-jim2101024@gmail.com> Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org The shutdown() call is similar to the remove() call except the former does not need to invoke pci_{stop,remove}_root_bus(), and besides, errors occur if it does. Signed-off-by: Jim Quinlan Acked-by: Florian Fainelli --- drivers/pci/controller/pcie-brcmstb.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/drivers/pci/controller/pcie-brcmstb.c b/drivers/pci/controller/pcie-brcmstb.c index d3af8d84f0d6..a1fe1a2ada48 100644 --- a/drivers/pci/controller/pcie-brcmstb.c +++ b/drivers/pci/controller/pcie-brcmstb.c @@ -1340,6 +1340,15 @@ static int brcm_pcie_remove(struct platform_device *pdev) return 0; } +static void brcm_pcie_shutdown(struct platform_device *pdev) +{ + struct brcm_pcie *pcie = platform_get_drvdata(pdev); + + if (pcie->has_err_report) + brcm_unregister_die_notifiers(pcie); + __brcm_pcie_remove(pcie); +} + static const struct of_device_id brcm_pcie_match[] = { { .compatible = "brcm,bcm2711-pcie", .data = &bcm2711_cfg }, { .compatible = "brcm,bcm4908-pcie", .data = &bcm4908_cfg }, @@ -1460,6 +1469,7 @@ static const struct dev_pm_ops brcm_pcie_pm_ops = { static struct platform_driver brcm_pcie_driver = { .probe = brcm_pcie_probe, .remove = brcm_pcie_remove, + .shutdown = brcm_pcie_shutdown, .driver = { .name = "brcm-pcie", .of_match_table = brcm_pcie_match,