From patchwork Thu Mar 16 08:10:59 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Manivannan Sadhasivam X-Patchwork-Id: 1757759 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=2620:137:e000::1:20; helo=out1.vger.email; envelope-from=linux-pci-owner@vger.kernel.org; receiver=) Authentication-Results: legolas.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=linaro.org header.i=@linaro.org header.a=rsa-sha256 header.s=google header.b=Nnjn8PYm; dkim-atps=neutral Received: from out1.vger.email (out1.vger.email [IPv6:2620:137:e000::1:20]) by legolas.ozlabs.org (Postfix) with ESMTP id 4Pcg2p53Ktz247M for ; Thu, 16 Mar 2023 19:11:46 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230464AbjCPILo (ORCPT ); Thu, 16 Mar 2023 04:11:44 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57876 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230447AbjCPILm (ORCPT ); Thu, 16 Mar 2023 04:11:42 -0400 Received: from mail-pg1-x52c.google.com (mail-pg1-x52c.google.com [IPv6:2607:f8b0:4864:20::52c]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id AAC51B1A7D for ; Thu, 16 Mar 2023 01:11:36 -0700 (PDT) Received: by mail-pg1-x52c.google.com with SMTP id t83so426549pgb.11 for ; Thu, 16 Mar 2023 01:11:36 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1678954296; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=vS8hfidRbkXx+WU7nlobVXwnuTS8kKT/thUC53f5Tfk=; b=Nnjn8PYmWqQ++sIgye0d2wCU3iwsPG03PgdfrKKyKHByELD3UZf8s8f1ysJWQDyuVS M1x8JKxAyJHdPpAslaBfS4meLs8ekxASJxhX3+XEhqF/gUwIOjQT48wbMGIu1ZSZLXGL RbsHnz9Kife58jkPXM2UYlyyQ9yKfbuuuHWW2atRy8i5m6rjZtjlHEPqcFw8pwiT+UP4 LpFKQZL3p8NT2U2bgRpuumcU7RGiN93T4VjFSyEqzaxRlZ7YVu9xn3SZmH5p3p9IkDSu PiJakb5Dy9OU/+j/BefeJ8IHCqHOTlhB4aLV2b4wTD+vHzg+J7zBaQmMgBgIpaRtRSDo uvrQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; t=1678954296; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=vS8hfidRbkXx+WU7nlobVXwnuTS8kKT/thUC53f5Tfk=; b=yCx8cw6T4IpSCGQrVpK/elS/iVl1C/l/0r5U99IK+FvlbbLqTmHB/5891PAXi2YjG7 i1+SZe05aENAKjjVUgcaOn++0zsMFtfr6M88CCde4huBkZbtTCaLYJQSNksU1VxkqJJi AqLN44RHqxF03gW4dtUFAN/bk1QV7oavBKjfAlKIiBTd3xGk88jHN6d64cQAu+XHRPqr B2i4j43shZEV+86xUCgTXgXx/6DyZNkVgh4T/uKDoSSWqdZHV1ThGbW1sMp7stCCqWul AHc1Mdg0iZCYqZVlqSaYwVMo7/nVhSL7wsTgyHM9KBTGsy5mL0EGHhS1qK/2K6Oy7yuz 09CA== X-Gm-Message-State: AO0yUKU+vzu1zEDj18nj4TdGRA2XBthyCmOH37dHqIVGLnW89v4jEzjv Zhg27JZ3iQkD5CCzYuQB2i5h X-Google-Smtp-Source: AK7set+s31rDEyaboCcssiS3+KoVpXo2emMr7Dufg9T5IRC/CnuQpBl7ucPbwnqoYEW/Zm610zXCng== X-Received: by 2002:a62:1b12:0:b0:626:444:bfa6 with SMTP id b18-20020a621b12000000b006260444bfa6mr125095pfb.26.1678954296213; Thu, 16 Mar 2023 01:11:36 -0700 (PDT) Received: from localhost.localdomain ([117.207.30.24]) by smtp.gmail.com with ESMTPSA id 13-20020aa7910d000000b005d9984a947bsm4804422pfh.139.2023.03.16.01.11.32 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 16 Mar 2023 01:11:35 -0700 (PDT) From: Manivannan Sadhasivam To: andersson@kernel.org, lpieralisi@kernel.org, kw@linux.com, krzysztof.kozlowski+dt@linaro.org, robh@kernel.org Cc: konrad.dybcio@linaro.org, linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, quic_srichara@quicinc.com, Manivannan Sadhasivam , stable@vger.kernel.org Subject: [PATCH v5 01/19] PCI: qcom: Fix the incorrect register usage in v2.7.0 config Date: Thu, 16 Mar 2023 13:40:59 +0530 Message-Id: <20230316081117.14288-2-manivannan.sadhasivam@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230316081117.14288-1-manivannan.sadhasivam@linaro.org> References: <20230316081117.14288-1-manivannan.sadhasivam@linaro.org> MIME-Version: 1.0 X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_NONE, SPF_HELO_NONE,SPF_PASS autolearn=unavailable autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org Qcom PCIe IP version v2.7.0 and its derivatives don't contain the PCIE20_PARF_AXI_MSTR_WR_ADDR_HALT register. Instead, they have the new PCIE20_PARF_AXI_MSTR_WR_ADDR_HALT_V2 register. So fix the incorrect register usage which is modifying a different register. Also in this IP version, this register change doesn't depend on MSI being enabled. So remove that check also. Cc: # 5.6+ Fixes: ed8cc3b1fc84 ("PCI: qcom: Add support for SDM845 PCIe controller") Signed-off-by: Manivannan Sadhasivam --- drivers/pci/controller/dwc/pcie-qcom.c | 8 +++----- 1 file changed, 3 insertions(+), 5 deletions(-) diff --git a/drivers/pci/controller/dwc/pcie-qcom.c b/drivers/pci/controller/dwc/pcie-qcom.c index a232b04af048..89d748cc4b8a 100644 --- a/drivers/pci/controller/dwc/pcie-qcom.c +++ b/drivers/pci/controller/dwc/pcie-qcom.c @@ -1279,11 +1279,9 @@ static int qcom_pcie_init_2_7_0(struct qcom_pcie *pcie) val &= ~REQ_NOT_ENTR_L1; writel(val, pcie->parf + PCIE20_PARF_PM_CTRL); - if (IS_ENABLED(CONFIG_PCI_MSI)) { - val = readl(pcie->parf + PCIE20_PARF_AXI_MSTR_WR_ADDR_HALT); - val |= BIT(31); - writel(val, pcie->parf + PCIE20_PARF_AXI_MSTR_WR_ADDR_HALT); - } + val = readl(pcie->parf + PCIE20_PARF_AXI_MSTR_WR_ADDR_HALT_V2); + val |= BIT(31); + writel(val, pcie->parf + PCIE20_PARF_AXI_MSTR_WR_ADDR_HALT_V2); return 0; err_disable_clocks: From patchwork Thu Mar 16 08:11:00 2023 Content-Type: text/plain; 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Thu, 16 Mar 2023 01:11:40 -0700 (PDT) From: Manivannan Sadhasivam To: andersson@kernel.org, lpieralisi@kernel.org, kw@linux.com, krzysztof.kozlowski+dt@linaro.org, robh@kernel.org Cc: konrad.dybcio@linaro.org, linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, quic_srichara@quicinc.com, Manivannan Sadhasivam Subject: [PATCH v5 02/19] PCI: qcom: Remove PCIE20_ prefix from register definitions Date: Thu, 16 Mar 2023 13:41:00 +0530 Message-Id: <20230316081117.14288-3-manivannan.sadhasivam@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230316081117.14288-1-manivannan.sadhasivam@linaro.org> References: <20230316081117.14288-1-manivannan.sadhasivam@linaro.org> MIME-Version: 1.0 X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_NONE, SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org The PCIE part is redundant and 20 doesn't represent anything across the SoCs supported now. So let's get rid of the prefix. This involves adding the IP version suffix to one definition of PARF_SLV_ADDR_SPACE_SIZE that defines offset specific to that version. The other definition is generic for the rest of the versions. Also, the register PCIE20_LNK_CONTROL2_LINK_STATUS2 is not used anywhere, hence removed. Signed-off-by: Manivannan Sadhasivam --- drivers/pci/controller/dwc/pcie-qcom.c | 184 ++++++++++++------------- 1 file changed, 91 insertions(+), 93 deletions(-) diff --git a/drivers/pci/controller/dwc/pcie-qcom.c b/drivers/pci/controller/dwc/pcie-qcom.c index 89d748cc4b8a..5855ad8e9c1c 100644 --- a/drivers/pci/controller/dwc/pcie-qcom.c +++ b/drivers/pci/controller/dwc/pcie-qcom.c @@ -33,7 +33,7 @@ #include "../../pci.h" #include "pcie-designware.h" -#define PCIE20_PARF_SYS_CTRL 0x00 +#define PARF_SYS_CTRL 0x00 #define MST_WAKEUP_EN BIT(13) #define SLV_WAKEUP_EN BIT(12) #define MSTR_ACLK_CGC_DIS BIT(10) @@ -43,39 +43,39 @@ #define L23_CLK_RMV_DIS BIT(2) #define L1_CLK_RMV_DIS BIT(1) -#define PCIE20_PARF_PM_CTRL 0x20 +#define PARF_PM_CTRL 0x20 #define REQ_NOT_ENTR_L1 BIT(5) -#define PCIE20_PARF_PHY_CTRL 0x40 +#define PARF_PHY_CTRL 0x40 #define PHY_CTRL_PHY_TX0_TERM_OFFSET_MASK GENMASK(20, 16) #define PHY_CTRL_PHY_TX0_TERM_OFFSET(x) ((x) << 16) -#define PCIE20_PARF_PHY_REFCLK 0x4C +#define PARF_PHY_REFCLK 0x4C #define PHY_REFCLK_SSP_EN BIT(16) #define PHY_REFCLK_USE_PAD BIT(12) -#define PCIE20_PARF_DBI_BASE_ADDR 0x168 -#define PCIE20_PARF_SLV_ADDR_SPACE_SIZE 0x16C -#define PCIE20_PARF_MHI_CLOCK_RESET_CTRL 0x174 +#define PARF_DBI_BASE_ADDR 0x168 +#define PARF_SLV_ADDR_SPACE_SIZE_2_3_3 0x16C /* Register offset specific to IP rev 2.3.3 */ +#define PARF_MHI_CLOCK_RESET_CTRL 0x174 #define AHB_CLK_EN BIT(0) #define MSTR_AXI_CLK_EN BIT(1) #define BYPASS BIT(4) -#define PCIE20_PARF_AXI_MSTR_WR_ADDR_HALT 0x178 -#define PCIE20_PARF_AXI_MSTR_WR_ADDR_HALT_V2 0x1A8 -#define PCIE20_PARF_LTSSM 0x1B0 -#define PCIE20_PARF_SID_OFFSET 0x234 -#define PCIE20_PARF_BDF_TRANSLATE_CFG 0x24C -#define PCIE20_PARF_DEVICE_TYPE 0x1000 -#define PCIE20_PARF_BDF_TO_SID_TABLE_N 0x2000 +#define PARF_AXI_MSTR_WR_ADDR_HALT 0x178 +#define PARF_AXI_MSTR_WR_ADDR_HALT_V2 0x1A8 +#define PARF_LTSSM 0x1B0 +#define PARF_SID_OFFSET 0x234 +#define PARF_BDF_TRANSLATE_CFG 0x24C +#define PARF_DEVICE_TYPE 0x1000 +#define PARF_BDF_TO_SID_TABLE_N 0x2000 -#define PCIE20_ELBI_SYS_CTRL 0x04 -#define PCIE20_ELBI_SYS_CTRL_LT_ENABLE BIT(0) +#define ELBI_SYS_CTRL 0x04 +#define ELBI_SYS_CTRL_LT_ENABLE BIT(0) -#define PCIE20_AXI_MSTR_RESP_COMP_CTRL0 0x818 +#define AXI_MSTR_RESP_COMP_CTRL0 0x818 #define CFG_REMOTE_RD_REQ_BRIDGE_SIZE_2K 0x4 #define CFG_REMOTE_RD_REQ_BRIDGE_SIZE_4K 0x5 -#define PCIE20_AXI_MSTR_RESP_COMP_CTRL1 0x81c +#define AXI_MSTR_RESP_COMP_CTRL1 0x81c #define CFG_BRIDGE_SB_INIT BIT(0) #define PCIE_CAP_SLOT_POWER_LIMIT_VAL FIELD_PREP(PCI_EXP_SLTCAP_SPLV, \ @@ -93,30 +93,28 @@ PCIE_CAP_SLOT_POWER_LIMIT_VAL | \ PCIE_CAP_SLOT_POWER_LIMIT_SCALE) -#define PCIE20_PARF_Q2A_FLUSH 0x1AC +#define PARF_Q2A_FLUSH 0x1AC -#define PCIE20_MISC_CONTROL_1_REG 0x8BC +#define MISC_CONTROL_1_REG 0x8BC #define DBI_RO_WR_EN 1 #define PERST_DELAY_US 1000 /* PARF registers */ -#define PCIE20_PARF_PCS_DEEMPH 0x34 +#define PARF_PCS_DEEMPH 0x34 #define PCS_DEEMPH_TX_DEEMPH_GEN1(x) ((x) << 16) #define PCS_DEEMPH_TX_DEEMPH_GEN2_3_5DB(x) ((x) << 8) #define PCS_DEEMPH_TX_DEEMPH_GEN2_6DB(x) ((x) << 0) -#define PCIE20_PARF_PCS_SWING 0x38 +#define PARF_PCS_SWING 0x38 #define PCS_SWING_TX_SWING_FULL(x) ((x) << 8) #define PCS_SWING_TX_SWING_LOW(x) ((x) << 0) -#define PCIE20_PARF_CONFIG_BITS 0x50 +#define PARF_CONFIG_BITS 0x50 #define PHY_RX0_EQ(x) ((x) << 24) -#define PCIE20_v3_PARF_SLV_ADDR_SPACE_SIZE 0x358 +#define PARF_SLV_ADDR_SPACE_SIZE 0x358 #define SLV_ADDR_SPACE_SZ 0x10000000 -#define PCIE20_LNK_CONTROL2_LINK_STATUS2 0xa0 - #define DEVICE_TYPE_RC 0x4 #define QCOM_PCIE_2_1_0_MAX_SUPPLY 3 @@ -261,9 +259,9 @@ static void qcom_pcie_2_1_0_ltssm_enable(struct qcom_pcie *pcie) u32 val; /* enable link training */ - val = readl(pcie->elbi + PCIE20_ELBI_SYS_CTRL); - val |= PCIE20_ELBI_SYS_CTRL_LT_ENABLE; - writel(val, pcie->elbi + PCIE20_ELBI_SYS_CTRL); + val = readl(pcie->elbi + ELBI_SYS_CTRL); + val |= ELBI_SYS_CTRL_LT_ENABLE; + writel(val, pcie->elbi + ELBI_SYS_CTRL); } static int qcom_pcie_get_resources_2_1_0(struct qcom_pcie *pcie) @@ -333,7 +331,7 @@ static void qcom_pcie_deinit_2_1_0(struct qcom_pcie *pcie) reset_control_assert(res->ext_reset); reset_control_assert(res->phy_reset); - writel(1, pcie->parf + PCIE20_PARF_PHY_CTRL); + writel(1, pcie->parf + PARF_PHY_CTRL); regulator_bulk_disable(ARRAY_SIZE(res->supplies), res->supplies); } @@ -423,9 +421,9 @@ static int qcom_pcie_post_init_2_1_0(struct qcom_pcie *pcie) int ret; /* enable PCIe clocks and resets */ - val = readl(pcie->parf + PCIE20_PARF_PHY_CTRL); + val = readl(pcie->parf + PARF_PHY_CTRL); val &= ~BIT(0); - writel(val, pcie->parf + PCIE20_PARF_PHY_CTRL); + writel(val, pcie->parf + PARF_PHY_CTRL); ret = clk_bulk_prepare_enable(ARRAY_SIZE(res->clks), res->clks); if (ret) @@ -436,37 +434,37 @@ static int qcom_pcie_post_init_2_1_0(struct qcom_pcie *pcie) writel(PCS_DEEMPH_TX_DEEMPH_GEN1(24) | PCS_DEEMPH_TX_DEEMPH_GEN2_3_5DB(24) | PCS_DEEMPH_TX_DEEMPH_GEN2_6DB(34), - pcie->parf + PCIE20_PARF_PCS_DEEMPH); + pcie->parf + PARF_PCS_DEEMPH); writel(PCS_SWING_TX_SWING_FULL(120) | PCS_SWING_TX_SWING_LOW(120), - pcie->parf + PCIE20_PARF_PCS_SWING); - writel(PHY_RX0_EQ(4), pcie->parf + PCIE20_PARF_CONFIG_BITS); + pcie->parf + PARF_PCS_SWING); + writel(PHY_RX0_EQ(4), pcie->parf + PARF_CONFIG_BITS); } if (of_device_is_compatible(node, "qcom,pcie-ipq8064")) { /* set TX termination offset */ - val = readl(pcie->parf + PCIE20_PARF_PHY_CTRL); + val = readl(pcie->parf + PARF_PHY_CTRL); val &= ~PHY_CTRL_PHY_TX0_TERM_OFFSET_MASK; val |= PHY_CTRL_PHY_TX0_TERM_OFFSET(7); - writel(val, pcie->parf + PCIE20_PARF_PHY_CTRL); + writel(val, pcie->parf + PARF_PHY_CTRL); } /* enable external reference clock */ - val = readl(pcie->parf + PCIE20_PARF_PHY_REFCLK); + val = readl(pcie->parf + PARF_PHY_REFCLK); /* USE_PAD is required only for ipq806x */ if (!of_device_is_compatible(node, "qcom,pcie-apq8064")) val &= ~PHY_REFCLK_USE_PAD; val |= PHY_REFCLK_SSP_EN; - writel(val, pcie->parf + PCIE20_PARF_PHY_REFCLK); + writel(val, pcie->parf + PARF_PHY_REFCLK); /* wait for clock acquisition */ usleep_range(1000, 1500); /* Set the Max TLP size to 2K, instead of using default of 4K */ writel(CFG_REMOTE_RD_REQ_BRIDGE_SIZE_2K, - pci->dbi_base + PCIE20_AXI_MSTR_RESP_COMP_CTRL0); + pci->dbi_base + AXI_MSTR_RESP_COMP_CTRL0); writel(CFG_BRIDGE_SB_INIT, - pci->dbi_base + PCIE20_AXI_MSTR_RESP_COMP_CTRL1); + pci->dbi_base + AXI_MSTR_RESP_COMP_CTRL1); return 0; } @@ -574,13 +572,13 @@ static int qcom_pcie_init_1_0_0(struct qcom_pcie *pcie) static int qcom_pcie_post_init_1_0_0(struct qcom_pcie *pcie) { /* change DBI base address */ - writel(0, pcie->parf + PCIE20_PARF_DBI_BASE_ADDR); + writel(0, pcie->parf + PARF_DBI_BASE_ADDR); if (IS_ENABLED(CONFIG_PCI_MSI)) { - u32 val = readl(pcie->parf + PCIE20_PARF_AXI_MSTR_WR_ADDR_HALT); + u32 val = readl(pcie->parf + PARF_AXI_MSTR_WR_ADDR_HALT); val |= BIT(31); - writel(val, pcie->parf + PCIE20_PARF_AXI_MSTR_WR_ADDR_HALT); + writel(val, pcie->parf + PARF_AXI_MSTR_WR_ADDR_HALT); } return 0; @@ -591,9 +589,9 @@ static void qcom_pcie_2_3_2_ltssm_enable(struct qcom_pcie *pcie) u32 val; /* enable link training */ - val = readl(pcie->parf + PCIE20_PARF_LTSSM); + val = readl(pcie->parf + PARF_LTSSM); val |= BIT(8); - writel(val, pcie->parf + PCIE20_PARF_LTSSM); + writel(val, pcie->parf + PARF_LTSSM); } static int qcom_pcie_get_resources_2_3_2(struct qcom_pcie *pcie) @@ -698,25 +696,25 @@ static int qcom_pcie_post_init_2_3_2(struct qcom_pcie *pcie) u32 val; /* enable PCIe clocks and resets */ - val = readl(pcie->parf + PCIE20_PARF_PHY_CTRL); + val = readl(pcie->parf + PARF_PHY_CTRL); val &= ~BIT(0); - writel(val, pcie->parf + PCIE20_PARF_PHY_CTRL); + writel(val, pcie->parf + PARF_PHY_CTRL); /* change DBI base address */ - writel(0, pcie->parf + PCIE20_PARF_DBI_BASE_ADDR); + writel(0, pcie->parf + PARF_DBI_BASE_ADDR); /* MAC PHY_POWERDOWN MUX DISABLE */ - val = readl(pcie->parf + PCIE20_PARF_SYS_CTRL); + val = readl(pcie->parf + PARF_SYS_CTRL); val &= ~BIT(29); - writel(val, pcie->parf + PCIE20_PARF_SYS_CTRL); + writel(val, pcie->parf + PARF_SYS_CTRL); - val = readl(pcie->parf + PCIE20_PARF_MHI_CLOCK_RESET_CTRL); + val = readl(pcie->parf + PARF_MHI_CLOCK_RESET_CTRL); val |= BIT(4); - writel(val, pcie->parf + PCIE20_PARF_MHI_CLOCK_RESET_CTRL); + writel(val, pcie->parf + PARF_MHI_CLOCK_RESET_CTRL); - val = readl(pcie->parf + PCIE20_PARF_AXI_MSTR_WR_ADDR_HALT_V2); + val = readl(pcie->parf + PARF_AXI_MSTR_WR_ADDR_HALT_V2); val |= BIT(31); - writel(val, pcie->parf + PCIE20_PARF_AXI_MSTR_WR_ADDR_HALT_V2); + writel(val, pcie->parf + PARF_AXI_MSTR_WR_ADDR_HALT_V2); return 0; } @@ -977,25 +975,25 @@ static int qcom_pcie_post_init_2_4_0(struct qcom_pcie *pcie) u32 val; /* enable PCIe clocks and resets */ - val = readl(pcie->parf + PCIE20_PARF_PHY_CTRL); + val = readl(pcie->parf + PARF_PHY_CTRL); val &= ~BIT(0); - writel(val, pcie->parf + PCIE20_PARF_PHY_CTRL); + writel(val, pcie->parf + PARF_PHY_CTRL); /* change DBI base address */ - writel(0, pcie->parf + PCIE20_PARF_DBI_BASE_ADDR); + writel(0, pcie->parf + PARF_DBI_BASE_ADDR); /* MAC PHY_POWERDOWN MUX DISABLE */ - val = readl(pcie->parf + PCIE20_PARF_SYS_CTRL); + val = readl(pcie->parf + PARF_SYS_CTRL); val &= ~BIT(29); - writel(val, pcie->parf + PCIE20_PARF_SYS_CTRL); + writel(val, pcie->parf + PARF_SYS_CTRL); - val = readl(pcie->parf + PCIE20_PARF_MHI_CLOCK_RESET_CTRL); + val = readl(pcie->parf + PARF_MHI_CLOCK_RESET_CTRL); val |= BIT(4); - writel(val, pcie->parf + PCIE20_PARF_MHI_CLOCK_RESET_CTRL); + writel(val, pcie->parf + PARF_MHI_CLOCK_RESET_CTRL); - val = readl(pcie->parf + PCIE20_PARF_AXI_MSTR_WR_ADDR_HALT_V2); + val = readl(pcie->parf + PARF_AXI_MSTR_WR_ADDR_HALT_V2); val |= BIT(31); - writel(val, pcie->parf + PCIE20_PARF_AXI_MSTR_WR_ADDR_HALT_V2); + writel(val, pcie->parf + PARF_AXI_MSTR_WR_ADDR_HALT_V2); return 0; } @@ -1140,22 +1138,22 @@ static int qcom_pcie_post_init_2_3_3(struct qcom_pcie *pcie) u32 val; writel(SLV_ADDR_SPACE_SZ, - pcie->parf + PCIE20_v3_PARF_SLV_ADDR_SPACE_SIZE); + pcie->parf + PARF_SLV_ADDR_SPACE_SIZE_2_3_3); - val = readl(pcie->parf + PCIE20_PARF_PHY_CTRL); + val = readl(pcie->parf + PARF_PHY_CTRL); val &= ~BIT(0); - writel(val, pcie->parf + PCIE20_PARF_PHY_CTRL); + writel(val, pcie->parf + PARF_PHY_CTRL); - writel(0, pcie->parf + PCIE20_PARF_DBI_BASE_ADDR); + writel(0, pcie->parf + PARF_DBI_BASE_ADDR); writel(MST_WAKEUP_EN | SLV_WAKEUP_EN | MSTR_ACLK_CGC_DIS | SLV_ACLK_CGC_DIS | CORE_CLK_CGC_DIS | AUX_PWR_DET | L23_CLK_RMV_DIS | L1_CLK_RMV_DIS, - pcie->parf + PCIE20_PARF_SYS_CTRL); - writel(0, pcie->parf + PCIE20_PARF_Q2A_FLUSH); + pcie->parf + PARF_SYS_CTRL); + writel(0, pcie->parf + PARF_Q2A_FLUSH); writel(PCI_COMMAND_MASTER, pci->dbi_base + PCI_COMMAND); - writel(DBI_RO_WR_EN, pci->dbi_base + PCIE20_MISC_CONTROL_1_REG); + writel(DBI_RO_WR_EN, pci->dbi_base + MISC_CONTROL_1_REG); writel(PCIE_CAP_SLOT_VAL, pci->dbi_base + offset + PCI_EXP_SLTCAP); val = readl(pci->dbi_base + offset + PCI_EXP_LNKCAP); @@ -1255,33 +1253,33 @@ static int qcom_pcie_init_2_7_0(struct qcom_pcie *pcie) usleep_range(1000, 1500); /* configure PCIe to RC mode */ - writel(DEVICE_TYPE_RC, pcie->parf + PCIE20_PARF_DEVICE_TYPE); + writel(DEVICE_TYPE_RC, pcie->parf + PARF_DEVICE_TYPE); /* enable PCIe clocks and resets */ - val = readl(pcie->parf + PCIE20_PARF_PHY_CTRL); + val = readl(pcie->parf + PARF_PHY_CTRL); val &= ~BIT(0); - writel(val, pcie->parf + PCIE20_PARF_PHY_CTRL); + writel(val, pcie->parf + PARF_PHY_CTRL); /* change DBI base address */ - writel(0, pcie->parf + PCIE20_PARF_DBI_BASE_ADDR); + writel(0, pcie->parf + PARF_DBI_BASE_ADDR); /* MAC PHY_POWERDOWN MUX DISABLE */ - val = readl(pcie->parf + PCIE20_PARF_SYS_CTRL); + val = readl(pcie->parf + PARF_SYS_CTRL); val &= ~BIT(29); - writel(val, pcie->parf + PCIE20_PARF_SYS_CTRL); + writel(val, pcie->parf + PARF_SYS_CTRL); - val = readl(pcie->parf + PCIE20_PARF_MHI_CLOCK_RESET_CTRL); + val = readl(pcie->parf + PARF_MHI_CLOCK_RESET_CTRL); val |= BIT(4); - writel(val, pcie->parf + PCIE20_PARF_MHI_CLOCK_RESET_CTRL); + writel(val, pcie->parf + PARF_MHI_CLOCK_RESET_CTRL); /* Enable L1 and L1SS */ - val = readl(pcie->parf + PCIE20_PARF_PM_CTRL); + val = readl(pcie->parf + PARF_PM_CTRL); val &= ~REQ_NOT_ENTR_L1; - writel(val, pcie->parf + PCIE20_PARF_PM_CTRL); + writel(val, pcie->parf + PARF_PM_CTRL); - val = readl(pcie->parf + PCIE20_PARF_AXI_MSTR_WR_ADDR_HALT_V2); + val = readl(pcie->parf + PARF_AXI_MSTR_WR_ADDR_HALT_V2); val |= BIT(31); - writel(val, pcie->parf + PCIE20_PARF_AXI_MSTR_WR_ADDR_HALT_V2); + writel(val, pcie->parf + PARF_AXI_MSTR_WR_ADDR_HALT_V2); return 0; err_disable_clocks: @@ -1369,17 +1367,17 @@ static int qcom_pcie_post_init_2_9_0(struct qcom_pcie *pcie) int i; writel(SLV_ADDR_SPACE_SZ, - pcie->parf + PCIE20_v3_PARF_SLV_ADDR_SPACE_SIZE); + pcie->parf + PARF_SLV_ADDR_SPACE_SIZE); - val = readl(pcie->parf + PCIE20_PARF_PHY_CTRL); + val = readl(pcie->parf + PARF_PHY_CTRL); val &= ~BIT(0); - writel(val, pcie->parf + PCIE20_PARF_PHY_CTRL); + writel(val, pcie->parf + PARF_PHY_CTRL); - writel(0, pcie->parf + PCIE20_PARF_DBI_BASE_ADDR); + writel(0, pcie->parf + PARF_DBI_BASE_ADDR); - writel(DEVICE_TYPE_RC, pcie->parf + PCIE20_PARF_DEVICE_TYPE); + writel(DEVICE_TYPE_RC, pcie->parf + PARF_DEVICE_TYPE); writel(BYPASS | MSTR_AXI_CLK_EN | AHB_CLK_EN, - pcie->parf + PCIE20_PARF_MHI_CLOCK_RESET_CTRL); + pcie->parf + PARF_MHI_CLOCK_RESET_CTRL); writel(GEN3_RELATED_OFF_RXEQ_RGRDLESS_RXTS | GEN3_RELATED_OFF_GEN3_ZRXDC_NONCOMPL, pci->dbi_base + GEN3_RELATED_OFF); @@ -1387,9 +1385,9 @@ static int qcom_pcie_post_init_2_9_0(struct qcom_pcie *pcie) writel(MST_WAKEUP_EN | SLV_WAKEUP_EN | MSTR_ACLK_CGC_DIS | SLV_ACLK_CGC_DIS | CORE_CLK_CGC_DIS | AUX_PWR_DET | L23_CLK_RMV_DIS | L1_CLK_RMV_DIS, - pcie->parf + PCIE20_PARF_SYS_CTRL); + pcie->parf + PARF_SYS_CTRL); - writel(0, pcie->parf + PCIE20_PARF_Q2A_FLUSH); + writel(0, pcie->parf + PARF_Q2A_FLUSH); dw_pcie_dbi_ro_wr_en(pci); writel(PCIE_CAP_SLOT_VAL, pci->dbi_base + offset + PCI_EXP_SLTCAP); @@ -1402,7 +1400,7 @@ static int qcom_pcie_post_init_2_9_0(struct qcom_pcie *pcie) PCI_EXP_DEVCTL2); for (i = 0; i < 256; i++) - writel(0, pcie->parf + PCIE20_PARF_BDF_TO_SID_TABLE_N + (4 * i)); + writel(0, pcie->parf + PARF_BDF_TO_SID_TABLE_N + (4 * i)); return 0; } @@ -1424,7 +1422,7 @@ static int qcom_pcie_config_sid_sm8250(struct qcom_pcie *pcie) u32 smmu_sid; u32 smmu_sid_len; } *map; - void __iomem *bdf_to_sid_base = pcie->parf + PCIE20_PARF_BDF_TO_SID_TABLE_N; + void __iomem *bdf_to_sid_base = pcie->parf + PARF_BDF_TO_SID_TABLE_N; struct device *dev = pcie->pci->dev; u8 qcom_pcie_crc8_table[CRC8_TABLE_SIZE]; int i, nr_map, size = 0; From patchwork Thu Mar 16 08:11:01 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Manivannan Sadhasivam X-Patchwork-Id: 1757761 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=2620:137:e000::1:20; helo=out1.vger.email; 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Thu, 16 Mar 2023 01:11:45 -0700 (PDT) Received: from localhost.localdomain ([117.207.30.24]) by smtp.gmail.com with ESMTPSA id 13-20020aa7910d000000b005d9984a947bsm4804422pfh.139.2023.03.16.01.11.41 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 16 Mar 2023 01:11:45 -0700 (PDT) From: Manivannan Sadhasivam To: andersson@kernel.org, lpieralisi@kernel.org, kw@linux.com, krzysztof.kozlowski+dt@linaro.org, robh@kernel.org Cc: konrad.dybcio@linaro.org, linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, quic_srichara@quicinc.com, Manivannan Sadhasivam Subject: [PATCH v5 03/19] PCI: qcom: Sort and group registers and bitfield definitions Date: Thu, 16 Mar 2023 13:41:01 +0530 Message-Id: <20230316081117.14288-4-manivannan.sadhasivam@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230316081117.14288-1-manivannan.sadhasivam@linaro.org> References: <20230316081117.14288-1-manivannan.sadhasivam@linaro.org> MIME-Version: 1.0 X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_NONE, SPF_HELO_NONE,SPF_PASS,UPPERCASE_50_75 autolearn=no autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org Sorting the registers and their bit definitions will make it easier to add more definitions in the future and it also helps in maintenance. While at it, let's also group the registers and bit definitions separately as done in the pcie-qcom-ep driver. Signed-off-by: Manivannan Sadhasivam --- drivers/pci/controller/dwc/pcie-qcom.c | 108 ++++++++++++++----------- 1 file changed, 63 insertions(+), 45 deletions(-) diff --git a/drivers/pci/controller/dwc/pcie-qcom.c b/drivers/pci/controller/dwc/pcie-qcom.c index 5855ad8e9c1c..a33653d576b6 100644 --- a/drivers/pci/controller/dwc/pcie-qcom.c +++ b/drivers/pci/controller/dwc/pcie-qcom.c @@ -33,7 +33,36 @@ #include "../../pci.h" #include "pcie-designware.h" +/* PARF registers */ #define PARF_SYS_CTRL 0x00 +#define PARF_PM_CTRL 0x20 +#define PARF_PCS_DEEMPH 0x34 +#define PARF_PCS_SWING 0x38 +#define PARF_PHY_CTRL 0x40 +#define PARF_PHY_REFCLK 0x4C +#define PARF_CONFIG_BITS 0x50 +#define PARF_DBI_BASE_ADDR 0x168 +#define PARF_SLV_ADDR_SPACE_SIZE_2_3_3 0x16C /* Register offset specific to IP ver 2.3.3 */ +#define PARF_MHI_CLOCK_RESET_CTRL 0x174 +#define PARF_AXI_MSTR_WR_ADDR_HALT 0x178 +#define PARF_AXI_MSTR_WR_ADDR_HALT_V2 0x1A8 +#define PARF_Q2A_FLUSH 0x1AC +#define PARF_LTSSM 0x1B0 +#define PARF_SID_OFFSET 0x234 +#define PARF_BDF_TRANSLATE_CFG 0x24C +#define PARF_SLV_ADDR_SPACE_SIZE 0x358 +#define PARF_DEVICE_TYPE 0x1000 +#define PARF_BDF_TO_SID_TABLE_N 0x2000 + +/* ELBI registers */ +#define ELBI_SYS_CTRL 0x04 + +/* DBI registers */ +#define AXI_MSTR_RESP_COMP_CTRL0 0x818 +#define AXI_MSTR_RESP_COMP_CTRL1 0x81c +#define MISC_CONTROL_1_REG 0x8BC + +/* PARF_SYS_CTRL register fields */ #define MST_WAKEUP_EN BIT(13) #define SLV_WAKEUP_EN BIT(12) #define MSTR_ACLK_CGC_DIS BIT(10) @@ -43,45 +72,56 @@ #define L23_CLK_RMV_DIS BIT(2) #define L1_CLK_RMV_DIS BIT(1) -#define PARF_PM_CTRL 0x20 +/* PARF_PM_CTRL register fields */ #define REQ_NOT_ENTR_L1 BIT(5) -#define PARF_PHY_CTRL 0x40 +/* PARF_PCS_DEEMPH register fields */ +#define PCS_DEEMPH_TX_DEEMPH_GEN1(x) ((x) << 16) +#define PCS_DEEMPH_TX_DEEMPH_GEN2_3_5DB(x) ((x) << 8) +#define PCS_DEEMPH_TX_DEEMPH_GEN2_6DB(x) ((x) << 0) + +/* PARF_PCS_SWING register fields */ +#define PCS_SWING_TX_SWING_FULL(x) ((x) << 8) +#define PCS_SWING_TX_SWING_LOW(x) ((x) << 0) + +/* PARF_PHY_CTRL register fields */ #define PHY_CTRL_PHY_TX0_TERM_OFFSET_MASK GENMASK(20, 16) #define PHY_CTRL_PHY_TX0_TERM_OFFSET(x) ((x) << 16) -#define PARF_PHY_REFCLK 0x4C +/* PARF_PHY_REFCLK register fields */ #define PHY_REFCLK_SSP_EN BIT(16) #define PHY_REFCLK_USE_PAD BIT(12) -#define PARF_DBI_BASE_ADDR 0x168 -#define PARF_SLV_ADDR_SPACE_SIZE_2_3_3 0x16C /* Register offset specific to IP rev 2.3.3 */ -#define PARF_MHI_CLOCK_RESET_CTRL 0x174 +/* PARF_CONFIG_BITS register fields */ +#define PHY_RX0_EQ(x) ((x) << 24) + +/* PARF_SLV_ADDR_SPACE_SIZE register value */ +#define SLV_ADDR_SPACE_SZ 0x10000000 + +/* PARF_MHI_CLOCK_RESET_CTRL register fields */ #define AHB_CLK_EN BIT(0) #define MSTR_AXI_CLK_EN BIT(1) #define BYPASS BIT(4) -#define PARF_AXI_MSTR_WR_ADDR_HALT 0x178 -#define PARF_AXI_MSTR_WR_ADDR_HALT_V2 0x1A8 -#define PARF_LTSSM 0x1B0 -#define PARF_SID_OFFSET 0x234 -#define PARF_BDF_TRANSLATE_CFG 0x24C -#define PARF_DEVICE_TYPE 0x1000 -#define PARF_BDF_TO_SID_TABLE_N 0x2000 +/* PARF_DEVICE_TYPE register fields */ +#define DEVICE_TYPE_RC 0x4 -#define ELBI_SYS_CTRL 0x04 +/* ELBI_SYS_CTRL register fields */ #define ELBI_SYS_CTRL_LT_ENABLE BIT(0) -#define AXI_MSTR_RESP_COMP_CTRL0 0x818 +/* AXI_MSTR_RESP_COMP_CTRL0 register fields */ #define CFG_REMOTE_RD_REQ_BRIDGE_SIZE_2K 0x4 #define CFG_REMOTE_RD_REQ_BRIDGE_SIZE_4K 0x5 -#define AXI_MSTR_RESP_COMP_CTRL1 0x81c + +/* AXI_MSTR_RESP_COMP_CTRL1 register fields */ #define CFG_BRIDGE_SB_INIT BIT(0) -#define PCIE_CAP_SLOT_POWER_LIMIT_VAL FIELD_PREP(PCI_EXP_SLTCAP_SPLV, \ - 250) -#define PCIE_CAP_SLOT_POWER_LIMIT_SCALE FIELD_PREP(PCI_EXP_SLTCAP_SPLS, \ - 1) +/* MISC_CONTROL_1_REG register fields */ +#define DBI_RO_WR_EN 1 + +/* PCI_EXP_SLTCAP register fields */ +#define PCIE_CAP_SLOT_POWER_LIMIT_VAL FIELD_PREP(PCI_EXP_SLTCAP_SPLV, 250) +#define PCIE_CAP_SLOT_POWER_LIMIT_SCALE FIELD_PREP(PCI_EXP_SLTCAP_SPLS, 1) #define PCIE_CAP_SLOT_VAL (PCI_EXP_SLTCAP_ABP | \ PCI_EXP_SLTCAP_PCP | \ PCI_EXP_SLTCAP_MRLSP | \ @@ -93,34 +133,12 @@ PCIE_CAP_SLOT_POWER_LIMIT_VAL | \ PCIE_CAP_SLOT_POWER_LIMIT_SCALE) -#define PARF_Q2A_FLUSH 0x1AC - -#define MISC_CONTROL_1_REG 0x8BC -#define DBI_RO_WR_EN 1 - #define PERST_DELAY_US 1000 -/* PARF registers */ -#define PARF_PCS_DEEMPH 0x34 -#define PCS_DEEMPH_TX_DEEMPH_GEN1(x) ((x) << 16) -#define PCS_DEEMPH_TX_DEEMPH_GEN2_3_5DB(x) ((x) << 8) -#define PCS_DEEMPH_TX_DEEMPH_GEN2_6DB(x) ((x) << 0) - -#define PARF_PCS_SWING 0x38 -#define PCS_SWING_TX_SWING_FULL(x) ((x) << 8) -#define PCS_SWING_TX_SWING_LOW(x) ((x) << 0) - -#define PARF_CONFIG_BITS 0x50 -#define PHY_RX0_EQ(x) ((x) << 24) - -#define PARF_SLV_ADDR_SPACE_SIZE 0x358 -#define SLV_ADDR_SPACE_SZ 0x10000000 - -#define DEVICE_TYPE_RC 0x4 -#define QCOM_PCIE_2_1_0_MAX_SUPPLY 3 -#define QCOM_PCIE_2_1_0_MAX_CLOCKS 5 +#define QCOM_PCIE_2_1_0_MAX_SUPPLY 3 +#define QCOM_PCIE_2_1_0_MAX_CLOCKS 5 -#define QCOM_PCIE_CRC8_POLYNOMIAL (BIT(2) | BIT(1) | BIT(0)) +#define QCOM_PCIE_CRC8_POLYNOMIAL (BIT(2) | BIT(1) | BIT(0)) struct qcom_pcie_resources_2_1_0 { struct clk_bulk_data clks[QCOM_PCIE_2_1_0_MAX_CLOCKS]; From patchwork Thu Mar 16 08:11:02 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Manivannan Sadhasivam X-Patchwork-Id: 1757762 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=2620:137:e000::1:20; helo=out1.vger.email; envelope-from=linux-pci-owner@vger.kernel.org; receiver=) Authentication-Results: legolas.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=linaro.org header.i=@linaro.org header.a=rsa-sha256 header.s=google header.b=ATeuvXh+; dkim-atps=neutral Received: from out1.vger.email (out1.vger.email [IPv6:2620:137:e000::1:20]) by legolas.ozlabs.org (Postfix) with ESMTP id 4Pcg3D38Zzz246q for ; Thu, 16 Mar 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linux-kernel@vger.kernel.org, quic_srichara@quicinc.com, Manivannan Sadhasivam Subject: [PATCH v5 04/19] PCI: qcom: Use bitfield definitions for register fields Date: Thu, 16 Mar 2023 13:41:02 +0530 Message-Id: <20230316081117.14288-5-manivannan.sadhasivam@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230316081117.14288-1-manivannan.sadhasivam@linaro.org> References: <20230316081117.14288-1-manivannan.sadhasivam@linaro.org> MIME-Version: 1.0 X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_NONE, SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org To maintain uniformity throughout the driver and also to make the code easier to read, let's make use of bitfield definitions for register fields. Signed-off-by: Manivannan Sadhasivam --- drivers/pci/controller/dwc/pcie-qcom.c | 14 +++++++------- 1 file changed, 7 insertions(+), 7 deletions(-) diff --git a/drivers/pci/controller/dwc/pcie-qcom.c b/drivers/pci/controller/dwc/pcie-qcom.c index a33653d576b6..44c31c65695a 100644 --- a/drivers/pci/controller/dwc/pcie-qcom.c +++ b/drivers/pci/controller/dwc/pcie-qcom.c @@ -76,24 +76,24 @@ #define REQ_NOT_ENTR_L1 BIT(5) /* PARF_PCS_DEEMPH register fields */ -#define PCS_DEEMPH_TX_DEEMPH_GEN1(x) ((x) << 16) -#define PCS_DEEMPH_TX_DEEMPH_GEN2_3_5DB(x) ((x) << 8) -#define PCS_DEEMPH_TX_DEEMPH_GEN2_6DB(x) ((x) << 0) +#define PCS_DEEMPH_TX_DEEMPH_GEN1(x) FIELD_PREP(GENMASK(21, 16), x) +#define PCS_DEEMPH_TX_DEEMPH_GEN2_3_5DB(x) FIELD_PREP(GENMASK(13, 8), x) +#define PCS_DEEMPH_TX_DEEMPH_GEN2_6DB(x) FIELD_PREP(GENMASK(5, 0), x) /* PARF_PCS_SWING register fields */ -#define PCS_SWING_TX_SWING_FULL(x) ((x) << 8) -#define PCS_SWING_TX_SWING_LOW(x) ((x) << 0) +#define PCS_SWING_TX_SWING_FULL(x) FIELD_PREP(GENMASK(14, 8), x) +#define PCS_SWING_TX_SWING_LOW(x) FIELD_PREP(GENMASK(6, 0), x) /* PARF_PHY_CTRL register fields */ #define PHY_CTRL_PHY_TX0_TERM_OFFSET_MASK GENMASK(20, 16) -#define PHY_CTRL_PHY_TX0_TERM_OFFSET(x) ((x) << 16) +#define PHY_CTRL_PHY_TX0_TERM_OFFSET(x) FIELD_PREP(PHY_CTRL_PHY_TX0_TERM_OFFSET_MASK, x) /* PARF_PHY_REFCLK register fields */ #define PHY_REFCLK_SSP_EN BIT(16) #define PHY_REFCLK_USE_PAD BIT(12) /* PARF_CONFIG_BITS register fields */ -#define PHY_RX0_EQ(x) ((x) << 24) +#define PHY_RX0_EQ(x) FIELD_PREP(GENMASK(26, 24), x) /* PARF_SLV_ADDR_SPACE_SIZE register value */ #define SLV_ADDR_SPACE_SZ 0x10000000 From patchwork Thu Mar 16 08:11:03 2023 Content-Type: text/plain; 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Thu, 16 Mar 2023 01:11:54 -0700 (PDT) From: Manivannan Sadhasivam To: andersson@kernel.org, lpieralisi@kernel.org, kw@linux.com, krzysztof.kozlowski+dt@linaro.org, robh@kernel.org Cc: konrad.dybcio@linaro.org, linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, quic_srichara@quicinc.com, Manivannan Sadhasivam Subject: [PATCH v5 05/19] PCI: qcom: Add missing macros for register fields Date: Thu, 16 Mar 2023 13:41:03 +0530 Message-Id: <20230316081117.14288-6-manivannan.sadhasivam@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230316081117.14288-1-manivannan.sadhasivam@linaro.org> References: <20230316081117.14288-1-manivannan.sadhasivam@linaro.org> MIME-Version: 1.0 X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_NONE, SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org Some of the registers are changed using hardcoded bitfields without macros. This provides no information on what the register setting is about. So add the macros to those fields for making the code more understandable. Signed-off-by: Manivannan Sadhasivam --- drivers/pci/controller/dwc/pcie-qcom.c | 42 +++++++++++++++----------- 1 file changed, 25 insertions(+), 17 deletions(-) diff --git a/drivers/pci/controller/dwc/pcie-qcom.c b/drivers/pci/controller/dwc/pcie-qcom.c index 44c31c65695a..f48990ac86dd 100644 --- a/drivers/pci/controller/dwc/pcie-qcom.c +++ b/drivers/pci/controller/dwc/pcie-qcom.c @@ -63,6 +63,7 @@ #define MISC_CONTROL_1_REG 0x8BC /* PARF_SYS_CTRL register fields */ +#define MAC_PHY_POWERDOWN_IN_P2_D_MUX_EN BIT(29) #define MST_WAKEUP_EN BIT(13) #define SLV_WAKEUP_EN BIT(12) #define MSTR_ACLK_CGC_DIS BIT(10) @@ -87,6 +88,7 @@ /* PARF_PHY_CTRL register fields */ #define PHY_CTRL_PHY_TX0_TERM_OFFSET_MASK GENMASK(20, 16) #define PHY_CTRL_PHY_TX0_TERM_OFFSET(x) FIELD_PREP(PHY_CTRL_PHY_TX0_TERM_OFFSET_MASK, x) +#define PHY_TEST_PWR_DOWN BIT(0) /* PARF_PHY_REFCLK register fields */ #define PHY_REFCLK_SSP_EN BIT(16) @@ -103,6 +105,12 @@ #define MSTR_AXI_CLK_EN BIT(1) #define BYPASS BIT(4) +/* PARF_AXI_MSTR_WR_ADDR_HALT register fields */ +#define EN BIT(31) + +/* PARF_LTSSM register fields */ +#define LTSSM_EN BIT(8) + /* PARF_DEVICE_TYPE register fields */ #define DEVICE_TYPE_RC 0x4 @@ -440,7 +448,7 @@ static int qcom_pcie_post_init_2_1_0(struct qcom_pcie *pcie) /* enable PCIe clocks and resets */ val = readl(pcie->parf + PARF_PHY_CTRL); - val &= ~BIT(0); + val &= ~PHY_TEST_PWR_DOWN; writel(val, pcie->parf + PARF_PHY_CTRL); ret = clk_bulk_prepare_enable(ARRAY_SIZE(res->clks), res->clks); @@ -595,7 +603,7 @@ static int qcom_pcie_post_init_1_0_0(struct qcom_pcie *pcie) if (IS_ENABLED(CONFIG_PCI_MSI)) { u32 val = readl(pcie->parf + PARF_AXI_MSTR_WR_ADDR_HALT); - val |= BIT(31); + val |= EN; writel(val, pcie->parf + PARF_AXI_MSTR_WR_ADDR_HALT); } @@ -608,7 +616,7 @@ static void qcom_pcie_2_3_2_ltssm_enable(struct qcom_pcie *pcie) /* enable link training */ val = readl(pcie->parf + PARF_LTSSM); - val |= BIT(8); + val |= LTSSM_EN; writel(val, pcie->parf + PARF_LTSSM); } @@ -715,7 +723,7 @@ static int qcom_pcie_post_init_2_3_2(struct qcom_pcie *pcie) /* enable PCIe clocks and resets */ val = readl(pcie->parf + PARF_PHY_CTRL); - val &= ~BIT(0); + val &= ~PHY_TEST_PWR_DOWN; writel(val, pcie->parf + PARF_PHY_CTRL); /* change DBI base address */ @@ -723,15 +731,15 @@ static int qcom_pcie_post_init_2_3_2(struct qcom_pcie *pcie) /* MAC PHY_POWERDOWN MUX DISABLE */ val = readl(pcie->parf + PARF_SYS_CTRL); - val &= ~BIT(29); + val &= ~MAC_PHY_POWERDOWN_IN_P2_D_MUX_EN; writel(val, pcie->parf + PARF_SYS_CTRL); val = readl(pcie->parf + PARF_MHI_CLOCK_RESET_CTRL); - val |= BIT(4); + val |= BYPASS; writel(val, pcie->parf + PARF_MHI_CLOCK_RESET_CTRL); val = readl(pcie->parf + PARF_AXI_MSTR_WR_ADDR_HALT_V2); - val |= BIT(31); + val |= EN; writel(val, pcie->parf + PARF_AXI_MSTR_WR_ADDR_HALT_V2); return 0; @@ -994,7 +1002,7 @@ static int qcom_pcie_post_init_2_4_0(struct qcom_pcie *pcie) /* enable PCIe clocks and resets */ val = readl(pcie->parf + PARF_PHY_CTRL); - val &= ~BIT(0); + val &= ~PHY_TEST_PWR_DOWN; writel(val, pcie->parf + PARF_PHY_CTRL); /* change DBI base address */ @@ -1002,15 +1010,15 @@ static int qcom_pcie_post_init_2_4_0(struct qcom_pcie *pcie) /* MAC PHY_POWERDOWN MUX DISABLE */ val = readl(pcie->parf + PARF_SYS_CTRL); - val &= ~BIT(29); + val &= ~MAC_PHY_POWERDOWN_IN_P2_D_MUX_EN; writel(val, pcie->parf + PARF_SYS_CTRL); val = readl(pcie->parf + PARF_MHI_CLOCK_RESET_CTRL); - val |= BIT(4); + val |= BYPASS; writel(val, pcie->parf + PARF_MHI_CLOCK_RESET_CTRL); val = readl(pcie->parf + PARF_AXI_MSTR_WR_ADDR_HALT_V2); - val |= BIT(31); + val |= EN; writel(val, pcie->parf + PARF_AXI_MSTR_WR_ADDR_HALT_V2); return 0; @@ -1159,7 +1167,7 @@ static int qcom_pcie_post_init_2_3_3(struct qcom_pcie *pcie) pcie->parf + PARF_SLV_ADDR_SPACE_SIZE_2_3_3); val = readl(pcie->parf + PARF_PHY_CTRL); - val &= ~BIT(0); + val &= ~PHY_TEST_PWR_DOWN; writel(val, pcie->parf + PARF_PHY_CTRL); writel(0, pcie->parf + PARF_DBI_BASE_ADDR); @@ -1275,7 +1283,7 @@ static int qcom_pcie_init_2_7_0(struct qcom_pcie *pcie) /* enable PCIe clocks and resets */ val = readl(pcie->parf + PARF_PHY_CTRL); - val &= ~BIT(0); + val &= ~PHY_TEST_PWR_DOWN; writel(val, pcie->parf + PARF_PHY_CTRL); /* change DBI base address */ @@ -1283,11 +1291,11 @@ static int qcom_pcie_init_2_7_0(struct qcom_pcie *pcie) /* MAC PHY_POWERDOWN MUX DISABLE */ val = readl(pcie->parf + PARF_SYS_CTRL); - val &= ~BIT(29); + val &= ~MAC_PHY_POWERDOWN_IN_P2_D_MUX_EN; writel(val, pcie->parf + PARF_SYS_CTRL); val = readl(pcie->parf + PARF_MHI_CLOCK_RESET_CTRL); - val |= BIT(4); + val |= BYPASS; writel(val, pcie->parf + PARF_MHI_CLOCK_RESET_CTRL); /* Enable L1 and L1SS */ @@ -1296,7 +1304,7 @@ static int qcom_pcie_init_2_7_0(struct qcom_pcie *pcie) writel(val, pcie->parf + PARF_PM_CTRL); val = readl(pcie->parf + PARF_AXI_MSTR_WR_ADDR_HALT_V2); - val |= BIT(31); + val |= EN; writel(val, pcie->parf + PARF_AXI_MSTR_WR_ADDR_HALT_V2); return 0; @@ -1388,7 +1396,7 @@ static int qcom_pcie_post_init_2_9_0(struct qcom_pcie *pcie) pcie->parf + PARF_SLV_ADDR_SPACE_SIZE); val = readl(pcie->parf + PARF_PHY_CTRL); - val &= ~BIT(0); + val &= ~PHY_TEST_PWR_DOWN; writel(val, pcie->parf + PARF_PHY_CTRL); writel(0, pcie->parf + PARF_DBI_BASE_ADDR); From patchwork Thu Mar 16 08:11:04 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Manivannan Sadhasivam X-Patchwork-Id: 1757764 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; 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Signed-off-by: Manivannan Sadhasivam --- drivers/pci/controller/dwc/pcie-qcom.c | 14 +++++++------- 1 file changed, 7 insertions(+), 7 deletions(-) diff --git a/drivers/pci/controller/dwc/pcie-qcom.c b/drivers/pci/controller/dwc/pcie-qcom.c index f48990ac86dd..249033d1b248 100644 --- a/drivers/pci/controller/dwc/pcie-qcom.c +++ b/drivers/pci/controller/dwc/pcie-qcom.c @@ -39,17 +39,17 @@ #define PARF_PCS_DEEMPH 0x34 #define PARF_PCS_SWING 0x38 #define PARF_PHY_CTRL 0x40 -#define PARF_PHY_REFCLK 0x4C +#define PARF_PHY_REFCLK 0x4c #define PARF_CONFIG_BITS 0x50 #define PARF_DBI_BASE_ADDR 0x168 -#define PARF_SLV_ADDR_SPACE_SIZE_2_3_3 0x16C /* Register offset specific to IP ver 2.3.3 */ +#define PARF_SLV_ADDR_SPACE_SIZE_2_3_3 0x16c /* Register offset specific to IP ver 2.3.3 */ #define PARF_MHI_CLOCK_RESET_CTRL 0x174 #define PARF_AXI_MSTR_WR_ADDR_HALT 0x178 -#define PARF_AXI_MSTR_WR_ADDR_HALT_V2 0x1A8 -#define PARF_Q2A_FLUSH 0x1AC -#define PARF_LTSSM 0x1B0 +#define PARF_AXI_MSTR_WR_ADDR_HALT_V2 0x1a8 +#define PARF_Q2A_FLUSH 0x1ac +#define PARF_LTSSM 0x1b0 #define PARF_SID_OFFSET 0x234 -#define PARF_BDF_TRANSLATE_CFG 0x24C +#define PARF_BDF_TRANSLATE_CFG 0x24c #define PARF_SLV_ADDR_SPACE_SIZE 0x358 #define PARF_DEVICE_TYPE 0x1000 #define PARF_BDF_TO_SID_TABLE_N 0x2000 @@ -60,7 +60,7 @@ /* DBI registers */ #define AXI_MSTR_RESP_COMP_CTRL0 0x818 #define AXI_MSTR_RESP_COMP_CTRL1 0x81c -#define MISC_CONTROL_1_REG 0x8BC +#define MISC_CONTROL_1_REG 0x8bc /* PARF_SYS_CTRL register fields */ #define MAC_PHY_POWERDOWN_IN_P2_D_MUX_EN BIT(29) From patchwork Thu Mar 16 08:11:05 2023 Content-Type: text/plain; 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Thu, 16 Mar 2023 01:12:02 -0700 (PDT) From: Manivannan Sadhasivam To: andersson@kernel.org, lpieralisi@kernel.org, kw@linux.com, krzysztof.kozlowski+dt@linaro.org, robh@kernel.org Cc: konrad.dybcio@linaro.org, linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, quic_srichara@quicinc.com, Manivannan Sadhasivam Subject: [PATCH v5 07/19] PCI: qcom: Use bulk reset APIs for handling resets for IP rev 2.1.0 Date: Thu, 16 Mar 2023 13:41:05 +0530 Message-Id: <20230316081117.14288-8-manivannan.sadhasivam@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230316081117.14288-1-manivannan.sadhasivam@linaro.org> References: <20230316081117.14288-1-manivannan.sadhasivam@linaro.org> MIME-Version: 1.0 X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_NONE, SPF_HELO_NONE,SPF_PASS autolearn=unavailable autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org All the resets are asserted and deasserted at the same time. So the bulk reset APIs can be used to handle them together. This simplifies the code a lot. While at it, let's also move the qcom_pcie_resources_2_1_0 struct below qcom_pcie_resources_1_0_0 to keep it sorted. Signed-off-by: Manivannan Sadhasivam --- drivers/pci/controller/dwc/pcie-qcom.c | 129 +++++++------------------ 1 file changed, 34 insertions(+), 95 deletions(-) diff --git a/drivers/pci/controller/dwc/pcie-qcom.c b/drivers/pci/controller/dwc/pcie-qcom.c index 249033d1b248..10e792604042 100644 --- a/drivers/pci/controller/dwc/pcie-qcom.c +++ b/drivers/pci/controller/dwc/pcie-qcom.c @@ -143,22 +143,8 @@ #define PERST_DELAY_US 1000 -#define QCOM_PCIE_2_1_0_MAX_SUPPLY 3 -#define QCOM_PCIE_2_1_0_MAX_CLOCKS 5 - #define QCOM_PCIE_CRC8_POLYNOMIAL (BIT(2) | BIT(1) | BIT(0)) -struct qcom_pcie_resources_2_1_0 { - struct clk_bulk_data clks[QCOM_PCIE_2_1_0_MAX_CLOCKS]; - struct reset_control *pci_reset; - struct reset_control *axi_reset; - struct reset_control *ahb_reset; - struct reset_control *por_reset; - struct reset_control *phy_reset; - struct reset_control *ext_reset; - struct regulator_bulk_data supplies[QCOM_PCIE_2_1_0_MAX_SUPPLY]; -}; - struct qcom_pcie_resources_1_0_0 { struct clk *iface; struct clk *aux; @@ -168,6 +154,16 @@ struct qcom_pcie_resources_1_0_0 { struct regulator *vdda; }; +#define QCOM_PCIE_2_1_0_MAX_CLOCKS 5 +#define QCOM_PCIE_2_1_0_MAX_RESETS 6 +#define QCOM_PCIE_2_1_0_MAX_SUPPLY 3 +struct qcom_pcie_resources_2_1_0 { + struct clk_bulk_data clks[QCOM_PCIE_2_1_0_MAX_CLOCKS]; + struct reset_control_bulk_data resets[QCOM_PCIE_2_1_0_MAX_RESETS]; + int num_resets; + struct regulator_bulk_data supplies[QCOM_PCIE_2_1_0_MAX_SUPPLY]; +}; + #define QCOM_PCIE_2_3_2_MAX_SUPPLY 2 struct qcom_pcie_resources_2_3_2 { struct clk *aux_clk; @@ -295,6 +291,7 @@ static int qcom_pcie_get_resources_2_1_0(struct qcom_pcie *pcie) struct qcom_pcie_resources_2_1_0 *res = &pcie->res.v2_1_0; struct dw_pcie *pci = pcie->pci; struct device *dev = pci->dev; + bool is_apq = of_device_is_compatible(dev->of_node, "qcom,pcie-apq8064"); int ret; res->supplies[0].supply = "vdda"; @@ -321,28 +318,20 @@ static int qcom_pcie_get_resources_2_1_0(struct qcom_pcie *pcie) if (ret < 0) return ret; - res->pci_reset = devm_reset_control_get_exclusive(dev, "pci"); - if (IS_ERR(res->pci_reset)) - return PTR_ERR(res->pci_reset); - - res->axi_reset = devm_reset_control_get_exclusive(dev, "axi"); - if (IS_ERR(res->axi_reset)) - return PTR_ERR(res->axi_reset); - - res->ahb_reset = devm_reset_control_get_exclusive(dev, "ahb"); - if (IS_ERR(res->ahb_reset)) - return PTR_ERR(res->ahb_reset); + res->resets[0].id = "pci"; + res->resets[1].id = "axi"; + res->resets[2].id = "ahb"; + res->resets[3].id = "por"; + res->resets[4].id = "phy"; + res->resets[5].id = "ext"; - res->por_reset = devm_reset_control_get_exclusive(dev, "por"); - if (IS_ERR(res->por_reset)) - return PTR_ERR(res->por_reset); - - res->ext_reset = devm_reset_control_get_optional_exclusive(dev, "ext"); - if (IS_ERR(res->ext_reset)) - return PTR_ERR(res->ext_reset); + /* ext is optional on APQ8016 */ + res->num_resets = is_apq ? 5 : 6; + ret = devm_reset_control_bulk_get_exclusive(dev, res->num_resets, res->resets); + if (ret < 0) + return ret; - res->phy_reset = devm_reset_control_get_exclusive(dev, "phy"); - return PTR_ERR_OR_ZERO(res->phy_reset); + return 0; } static void qcom_pcie_deinit_2_1_0(struct qcom_pcie *pcie) @@ -350,12 +339,7 @@ static void qcom_pcie_deinit_2_1_0(struct qcom_pcie *pcie) struct qcom_pcie_resources_2_1_0 *res = &pcie->res.v2_1_0; clk_bulk_disable_unprepare(ARRAY_SIZE(res->clks), res->clks); - reset_control_assert(res->pci_reset); - reset_control_assert(res->axi_reset); - reset_control_assert(res->ahb_reset); - reset_control_assert(res->por_reset); - reset_control_assert(res->ext_reset); - reset_control_assert(res->phy_reset); + reset_control_bulk_assert(res->num_resets, res->resets); writel(1, pcie->parf + PARF_PHY_CTRL); @@ -370,12 +354,11 @@ static int qcom_pcie_init_2_1_0(struct qcom_pcie *pcie) int ret; /* reset the PCIe interface as uboot can leave it undefined state */ - reset_control_assert(res->pci_reset); - reset_control_assert(res->axi_reset); - reset_control_assert(res->ahb_reset); - reset_control_assert(res->por_reset); - reset_control_assert(res->ext_reset); - reset_control_assert(res->phy_reset); + ret = reset_control_bulk_assert(res->num_resets, res->resets); + if (ret < 0) { + dev_err(dev, "cannot assert resets\n"); + return ret; + } ret = regulator_bulk_enable(ARRAY_SIZE(res->supplies), res->supplies); if (ret < 0) { @@ -383,58 +366,14 @@ static int qcom_pcie_init_2_1_0(struct qcom_pcie *pcie) return ret; } - ret = reset_control_deassert(res->ahb_reset); - if (ret) { - dev_err(dev, "cannot deassert ahb reset\n"); - goto err_deassert_ahb; - } - - ret = reset_control_deassert(res->ext_reset); - if (ret) { - dev_err(dev, "cannot deassert ext reset\n"); - goto err_deassert_ext; - } - - ret = reset_control_deassert(res->phy_reset); - if (ret) { - dev_err(dev, "cannot deassert phy reset\n"); - goto err_deassert_phy; - } - - ret = reset_control_deassert(res->pci_reset); - if (ret) { - dev_err(dev, "cannot deassert pci reset\n"); - goto err_deassert_pci; - } - - ret = reset_control_deassert(res->por_reset); - if (ret) { - dev_err(dev, "cannot deassert por reset\n"); - goto err_deassert_por; - } - - ret = reset_control_deassert(res->axi_reset); - if (ret) { - dev_err(dev, "cannot deassert axi reset\n"); - goto err_deassert_axi; + ret = reset_control_bulk_deassert(res->num_resets, res->resets); + if (ret < 0) { + dev_err(dev, "cannot deassert resets\n"); + regulator_bulk_disable(ARRAY_SIZE(res->supplies), res->supplies); + return ret; } return 0; - -err_deassert_axi: - reset_control_assert(res->por_reset); -err_deassert_por: - reset_control_assert(res->pci_reset); -err_deassert_pci: - reset_control_assert(res->phy_reset); -err_deassert_phy: - reset_control_assert(res->ext_reset); -err_deassert_ext: - reset_control_assert(res->ahb_reset); -err_deassert_ahb: - regulator_bulk_disable(ARRAY_SIZE(res->supplies), res->supplies); - - return ret; } static int qcom_pcie_post_init_2_1_0(struct qcom_pcie *pcie) From patchwork Thu Mar 16 08:11:06 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Manivannan Sadhasivam X-Patchwork-Id: 1757768 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; 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So the bulk clock APIs can be used to handle them together. This simplifies the code a lot. Signed-off-by: Manivannan Sadhasivam --- drivers/pci/controller/dwc/pcie-qcom.c | 72 +++++++------------------- 1 file changed, 19 insertions(+), 53 deletions(-) diff --git a/drivers/pci/controller/dwc/pcie-qcom.c b/drivers/pci/controller/dwc/pcie-qcom.c index 10e792604042..14373d591ed1 100644 --- a/drivers/pci/controller/dwc/pcie-qcom.c +++ b/drivers/pci/controller/dwc/pcie-qcom.c @@ -145,11 +145,9 @@ #define QCOM_PCIE_CRC8_POLYNOMIAL (BIT(2) | BIT(1) | BIT(0)) +#define QCOM_PCIE_1_0_0_MAX_CLOCKS 4 struct qcom_pcie_resources_1_0_0 { - struct clk *iface; - struct clk *aux; - struct clk *master_bus; - struct clk *slave_bus; + struct clk_bulk_data clks[QCOM_PCIE_1_0_0_MAX_CLOCKS]; struct reset_control *core; struct regulator *vdda; }; @@ -439,26 +437,20 @@ static int qcom_pcie_get_resources_1_0_0(struct qcom_pcie *pcie) struct qcom_pcie_resources_1_0_0 *res = &pcie->res.v1_0_0; struct dw_pcie *pci = pcie->pci; struct device *dev = pci->dev; + int ret; res->vdda = devm_regulator_get(dev, "vdda"); if (IS_ERR(res->vdda)) return PTR_ERR(res->vdda); - res->iface = devm_clk_get(dev, "iface"); - if (IS_ERR(res->iface)) - return PTR_ERR(res->iface); - - res->aux = devm_clk_get(dev, "aux"); - if (IS_ERR(res->aux)) - return PTR_ERR(res->aux); - - res->master_bus = devm_clk_get(dev, "master_bus"); - if (IS_ERR(res->master_bus)) - return PTR_ERR(res->master_bus); + res->clks[0].id = "iface"; + res->clks[1].id = "aux"; + res->clks[2].id = "master_bus"; + res->clks[3].id = "slave_bus"; - res->slave_bus = devm_clk_get(dev, "slave_bus"); - if (IS_ERR(res->slave_bus)) - return PTR_ERR(res->slave_bus); + ret = devm_clk_bulk_get(dev, ARRAY_SIZE(res->clks), res->clks); + if (ret < 0) + return ret; res->core = devm_reset_control_get_exclusive(dev, "core"); return PTR_ERR_OR_ZERO(res->core); @@ -469,10 +461,7 @@ static void qcom_pcie_deinit_1_0_0(struct qcom_pcie *pcie) struct qcom_pcie_resources_1_0_0 *res = &pcie->res.v1_0_0; reset_control_assert(res->core); - clk_disable_unprepare(res->slave_bus); - clk_disable_unprepare(res->master_bus); - clk_disable_unprepare(res->iface); - clk_disable_unprepare(res->aux); + clk_bulk_disable_unprepare(ARRAY_SIZE(res->clks), res->clks); regulator_disable(res->vdda); } @@ -489,46 +478,23 @@ static int qcom_pcie_init_1_0_0(struct qcom_pcie *pcie) return ret; } - ret = clk_prepare_enable(res->aux); - if (ret) { - dev_err(dev, "cannot prepare/enable aux clock\n"); - goto err_res; - } - - ret = clk_prepare_enable(res->iface); - if (ret) { - dev_err(dev, "cannot prepare/enable iface clock\n"); - goto err_aux; - } - - ret = clk_prepare_enable(res->master_bus); - if (ret) { - dev_err(dev, "cannot prepare/enable master_bus clock\n"); - goto err_iface; - } - - ret = clk_prepare_enable(res->slave_bus); + ret = clk_bulk_prepare_enable(ARRAY_SIZE(res->clks), res->clks); if (ret) { - dev_err(dev, "cannot prepare/enable slave_bus clock\n"); - goto err_master; + dev_err(dev, "cannot prepare/enable clocks\n"); + goto err_assert_reset; } ret = regulator_enable(res->vdda); if (ret) { dev_err(dev, "cannot enable vdda regulator\n"); - goto err_slave; + goto err_disable_clks; } return 0; -err_slave: - clk_disable_unprepare(res->slave_bus); -err_master: - clk_disable_unprepare(res->master_bus); -err_iface: - clk_disable_unprepare(res->iface); -err_aux: - clk_disable_unprepare(res->aux); -err_res: + +err_disable_clks: + clk_bulk_disable_unprepare(ARRAY_SIZE(res->clks), res->clks); +err_assert_reset: reset_control_assert(res->core); return ret; From patchwork Thu Mar 16 08:11:07 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Manivannan Sadhasivam X-Patchwork-Id: 1757769 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=2620:137:e000::1:20; helo=out1.vger.email; envelope-from=linux-pci-owner@vger.kernel.org; receiver=) Authentication-Results: legolas.ozlabs.org; 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Thu, 16 Mar 2023 01:12:11 -0700 (PDT) Received: from localhost.localdomain ([117.207.30.24]) by smtp.gmail.com with ESMTPSA id 13-20020aa7910d000000b005d9984a947bsm4804422pfh.139.2023.03.16.01.12.07 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 16 Mar 2023 01:12:10 -0700 (PDT) From: Manivannan Sadhasivam To: andersson@kernel.org, lpieralisi@kernel.org, kw@linux.com, krzysztof.kozlowski+dt@linaro.org, robh@kernel.org Cc: konrad.dybcio@linaro.org, linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, quic_srichara@quicinc.com, Manivannan Sadhasivam Subject: [PATCH v5 09/19] PCI: qcom: Use bulk clock APIs for handling clocks for IP rev 2.3.2 Date: Thu, 16 Mar 2023 13:41:07 +0530 Message-Id: <20230316081117.14288-10-manivannan.sadhasivam@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230316081117.14288-1-manivannan.sadhasivam@linaro.org> References: <20230316081117.14288-1-manivannan.sadhasivam@linaro.org> MIME-Version: 1.0 X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_NONE, SPF_HELO_NONE,SPF_PASS autolearn=unavailable autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org All the clocks are enabled and disabled at the same time. So the bulk clock APIs can be used to handle them together. This simplifies the code a lot. Signed-off-by: Manivannan Sadhasivam --- drivers/pci/controller/dwc/pcie-qcom.c | 72 ++++++-------------------- 1 file changed, 15 insertions(+), 57 deletions(-) diff --git a/drivers/pci/controller/dwc/pcie-qcom.c b/drivers/pci/controller/dwc/pcie-qcom.c index 14373d591ed1..0d0d87743cec 100644 --- a/drivers/pci/controller/dwc/pcie-qcom.c +++ b/drivers/pci/controller/dwc/pcie-qcom.c @@ -162,12 +162,10 @@ struct qcom_pcie_resources_2_1_0 { struct regulator_bulk_data supplies[QCOM_PCIE_2_1_0_MAX_SUPPLY]; }; -#define QCOM_PCIE_2_3_2_MAX_SUPPLY 2 +#define QCOM_PCIE_2_3_2_MAX_CLOCKS 4 +#define QCOM_PCIE_2_3_2_MAX_SUPPLY 2 struct qcom_pcie_resources_2_3_2 { - struct clk *aux_clk; - struct clk *master_clk; - struct clk *slave_clk; - struct clk *cfg_clk; + struct clk_bulk_data clks[QCOM_PCIE_2_3_2_MAX_CLOCKS]; struct regulator_bulk_data supplies[QCOM_PCIE_2_3_2_MAX_SUPPLY]; }; @@ -539,21 +537,14 @@ static int qcom_pcie_get_resources_2_3_2(struct qcom_pcie *pcie) if (ret) return ret; - res->aux_clk = devm_clk_get(dev, "aux"); - if (IS_ERR(res->aux_clk)) - return PTR_ERR(res->aux_clk); - - res->cfg_clk = devm_clk_get(dev, "cfg"); - if (IS_ERR(res->cfg_clk)) - return PTR_ERR(res->cfg_clk); - - res->master_clk = devm_clk_get(dev, "bus_master"); - if (IS_ERR(res->master_clk)) - return PTR_ERR(res->master_clk); + res->clks[0].id = "aux"; + res->clks[1].id = "cfg"; + res->clks[2].id = "bus_master"; + res->clks[3].id = "bus_slave"; - res->slave_clk = devm_clk_get(dev, "bus_slave"); - if (IS_ERR(res->slave_clk)) - return PTR_ERR(res->slave_clk); + ret = devm_clk_bulk_get(dev, ARRAY_SIZE(res->clks), res->clks); + if (ret < 0) + return ret; return 0; } @@ -562,11 +553,7 @@ static void qcom_pcie_deinit_2_3_2(struct qcom_pcie *pcie) { struct qcom_pcie_resources_2_3_2 *res = &pcie->res.v2_3_2; - clk_disable_unprepare(res->slave_clk); - clk_disable_unprepare(res->master_clk); - clk_disable_unprepare(res->cfg_clk); - clk_disable_unprepare(res->aux_clk); - + clk_bulk_disable_unprepare(ARRAY_SIZE(res->clks), res->clks); regulator_bulk_disable(ARRAY_SIZE(res->supplies), res->supplies); } @@ -583,43 +570,14 @@ static int qcom_pcie_init_2_3_2(struct qcom_pcie *pcie) return ret; } - ret = clk_prepare_enable(res->aux_clk); - if (ret) { - dev_err(dev, "cannot prepare/enable aux clock\n"); - goto err_aux_clk; - } - - ret = clk_prepare_enable(res->cfg_clk); - if (ret) { - dev_err(dev, "cannot prepare/enable cfg clock\n"); - goto err_cfg_clk; - } - - ret = clk_prepare_enable(res->master_clk); - if (ret) { - dev_err(dev, "cannot prepare/enable master clock\n"); - goto err_master_clk; - } - - ret = clk_prepare_enable(res->slave_clk); + ret = clk_bulk_prepare_enable(ARRAY_SIZE(res->clks), res->clks); if (ret) { - dev_err(dev, "cannot prepare/enable slave clock\n"); - goto err_slave_clk; + dev_err(dev, "cannot prepare/enable clocks\n"); + regulator_bulk_disable(ARRAY_SIZE(res->supplies), res->supplies); + return ret; } return 0; - -err_slave_clk: - clk_disable_unprepare(res->master_clk); -err_master_clk: - clk_disable_unprepare(res->cfg_clk); -err_cfg_clk: - clk_disable_unprepare(res->aux_clk); - -err_aux_clk: - regulator_bulk_disable(ARRAY_SIZE(res->supplies), res->supplies); - - return ret; } static int qcom_pcie_post_init_2_3_2(struct qcom_pcie *pcie) From patchwork Thu Mar 16 08:11:08 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Manivannan Sadhasivam X-Patchwork-Id: 1757766 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=2620:137:e000::1:20; helo=out1.vger.email; envelope-from=linux-pci-owner@vger.kernel.org; receiver=) Authentication-Results: legolas.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=linaro.org header.i=@linaro.org header.a=rsa-sha256 header.s=google header.b=jFyYU9Ab; dkim-atps=neutral Received: from out1.vger.email (out1.vger.email [IPv6:2620:137:e000::1:20]) by legolas.ozlabs.org (Postfix) with ESMTP id 4Pcg4C5WmMz246q for ; 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Thu, 16 Mar 2023 01:12:15 -0700 (PDT) From: Manivannan Sadhasivam To: andersson@kernel.org, lpieralisi@kernel.org, kw@linux.com, krzysztof.kozlowski+dt@linaro.org, robh@kernel.org Cc: konrad.dybcio@linaro.org, linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, quic_srichara@quicinc.com, Manivannan Sadhasivam Subject: [PATCH v5 10/19] PCI: qcom: Use bulk clock APIs for handling clocks for IP rev 2.3.3 Date: Thu, 16 Mar 2023 13:41:08 +0530 Message-Id: <20230316081117.14288-11-manivannan.sadhasivam@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230316081117.14288-1-manivannan.sadhasivam@linaro.org> References: <20230316081117.14288-1-manivannan.sadhasivam@linaro.org> MIME-Version: 1.0 X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_NONE, SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org All the clocks are enabled and disabled at the same time. So the bulk clock APIs can be used to handle them together. This simplifies the code a lot. Signed-off-by: Manivannan Sadhasivam --- drivers/pci/controller/dwc/pcie-qcom.c | 88 ++++++-------------------- 1 file changed, 20 insertions(+), 68 deletions(-) diff --git a/drivers/pci/controller/dwc/pcie-qcom.c b/drivers/pci/controller/dwc/pcie-qcom.c index 0d0d87743cec..42b851bdf1a9 100644 --- a/drivers/pci/controller/dwc/pcie-qcom.c +++ b/drivers/pci/controller/dwc/pcie-qcom.c @@ -169,6 +169,12 @@ struct qcom_pcie_resources_2_3_2 { struct regulator_bulk_data supplies[QCOM_PCIE_2_3_2_MAX_SUPPLY]; }; +#define QCOM_PCIE_2_3_3_MAX_CLOCKS 5 +struct qcom_pcie_resources_2_3_3 { + struct clk_bulk_data clks[QCOM_PCIE_2_3_3_MAX_CLOCKS]; + struct reset_control *rst[7]; +}; + #define QCOM_PCIE_2_4_0_MAX_CLOCKS 4 struct qcom_pcie_resources_2_4_0 { struct clk_bulk_data clks[QCOM_PCIE_2_4_0_MAX_CLOCKS]; @@ -187,15 +193,6 @@ struct qcom_pcie_resources_2_4_0 { struct reset_control *phy_ahb_reset; }; -struct qcom_pcie_resources_2_3_3 { - struct clk *iface; - struct clk *axi_m_clk; - struct clk *axi_s_clk; - struct clk *ahb_clk; - struct clk *aux_clk; - struct reset_control *rst[7]; -}; - /* 6 clocks typically, 7 for sm8250 */ struct qcom_pcie_resources_2_7_0 { struct clk_bulk_data clks[12]; @@ -896,26 +893,17 @@ static int qcom_pcie_get_resources_2_3_3(struct qcom_pcie *pcie) const char *rst_names[] = { "axi_m", "axi_s", "pipe", "axi_m_sticky", "sticky", "ahb", "sleep", }; + int ret; - res->iface = devm_clk_get(dev, "iface"); - if (IS_ERR(res->iface)) - return PTR_ERR(res->iface); - - res->axi_m_clk = devm_clk_get(dev, "axi_m"); - if (IS_ERR(res->axi_m_clk)) - return PTR_ERR(res->axi_m_clk); - - res->axi_s_clk = devm_clk_get(dev, "axi_s"); - if (IS_ERR(res->axi_s_clk)) - return PTR_ERR(res->axi_s_clk); - - res->ahb_clk = devm_clk_get(dev, "ahb"); - if (IS_ERR(res->ahb_clk)) - return PTR_ERR(res->ahb_clk); + res->clks[0].id = "iface"; + res->clks[1].id = "axi_m"; + res->clks[2].id = "axi_s"; + res->clks[3].id = "ahb"; + res->clks[4].id = "aux"; - res->aux_clk = devm_clk_get(dev, "aux"); - if (IS_ERR(res->aux_clk)) - return PTR_ERR(res->aux_clk); + ret = devm_clk_bulk_get(dev, ARRAY_SIZE(res->clks), res->clks); + if (ret < 0) + return ret; for (i = 0; i < ARRAY_SIZE(rst_names); i++) { res->rst[i] = devm_reset_control_get(dev, rst_names[i]); @@ -930,11 +918,7 @@ static void qcom_pcie_deinit_2_3_3(struct qcom_pcie *pcie) { struct qcom_pcie_resources_2_3_3 *res = &pcie->res.v2_3_3; - clk_disable_unprepare(res->iface); - clk_disable_unprepare(res->axi_m_clk); - clk_disable_unprepare(res->axi_s_clk); - clk_disable_unprepare(res->ahb_clk); - clk_disable_unprepare(res->aux_clk); + clk_bulk_disable_unprepare(ARRAY_SIZE(res->clks), res->clks); } static int qcom_pcie_init_2_3_3(struct qcom_pcie *pcie) @@ -969,47 +953,15 @@ static int qcom_pcie_init_2_3_3(struct qcom_pcie *pcie) */ usleep_range(2000, 2500); - ret = clk_prepare_enable(res->iface); - if (ret) { - dev_err(dev, "cannot prepare/enable core clock\n"); - goto err_clk_iface; - } - - ret = clk_prepare_enable(res->axi_m_clk); - if (ret) { - dev_err(dev, "cannot prepare/enable core clock\n"); - goto err_clk_axi_m; - } - - ret = clk_prepare_enable(res->axi_s_clk); - if (ret) { - dev_err(dev, "cannot prepare/enable axi slave clock\n"); - goto err_clk_axi_s; - } - - ret = clk_prepare_enable(res->ahb_clk); - if (ret) { - dev_err(dev, "cannot prepare/enable ahb clock\n"); - goto err_clk_ahb; - } - - ret = clk_prepare_enable(res->aux_clk); + ret = clk_bulk_prepare_enable(ARRAY_SIZE(res->clks), res->clks); if (ret) { - dev_err(dev, "cannot prepare/enable aux clock\n"); - goto err_clk_aux; + dev_err(dev, "cannot prepare/enable clocks\n"); + goto err_assert_resets; } return 0; -err_clk_aux: - clk_disable_unprepare(res->ahb_clk); -err_clk_ahb: - clk_disable_unprepare(res->axi_s_clk); -err_clk_axi_s: - clk_disable_unprepare(res->axi_m_clk); -err_clk_axi_m: - clk_disable_unprepare(res->iface); -err_clk_iface: +err_assert_resets: /* * Not checking for failure, will anyway return * the original failure in 'ret'. From patchwork Thu Mar 16 08:11:09 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Manivannan Sadhasivam X-Patchwork-Id: 1757767 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=2620:137:e000::1:20; helo=out1.vger.email; envelope-from=linux-pci-owner@vger.kernel.org; receiver=) Authentication-Results: legolas.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=linaro.org header.i=@linaro.org header.a=rsa-sha256 header.s=google header.b=pHP+s1h3; dkim-atps=neutral Received: from out1.vger.email (out1.vger.email [IPv6:2620:137:e000::1:20]) by legolas.ozlabs.org (Postfix) with ESMTP id 4Pcg4L1wbyz246q for ; Thu, 16 Mar 2023 19:13:06 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230520AbjCPINE (ORCPT ); Thu, 16 Mar 2023 04:13:04 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58770 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231161AbjCPIMr (ORCPT ); Thu, 16 Mar 2023 04:12:47 -0400 Received: from mail-pf1-x435.google.com (mail-pf1-x435.google.com [IPv6:2607:f8b0:4864:20::435]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 40686B3E31 for ; Thu, 16 Mar 2023 01:12:20 -0700 (PDT) Received: by mail-pf1-x435.google.com with SMTP id q14so601786pff.10 for ; Thu, 16 Mar 2023 01:12:20 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1678954340; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=ufpEA84/gN4umfd5y1eYnNgnkoqBPgqB3sRHySwDW0Y=; b=pHP+s1h3owrLB2ZhglIt11yJpI1n9LlCXsLJ4A2gsdxTCANzCBXoIH7LFJ+UJ+BsRl oGiDekv5KsnrlsPggi2emte2GD7zcT5Tan/MVhP5BFIwCQN4d8eQuqlbBBk5FXHlFX+9 BWbTkte9AcJFEovYt0DLZFpkaU5SMHVwEX+ZHB70Sq6mMbAxI8kqnXob25IQf8xi4QUK 6rVsajpmEi7wByzaR77MhKf8mfcQ/XjLd+YNz4z8v/a7ubsrMIoj0xaV7XsIW+TkQuQa so0TwHCRj3Vxflz8mtV21YgAI3ZlBMp8vZjrEEhhC9LaShVJl7O2hJRZAQQhLC04P4GF eL9g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; t=1678954340; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=ufpEA84/gN4umfd5y1eYnNgnkoqBPgqB3sRHySwDW0Y=; b=cF+Pfig+O7kwOsuQ4mzrkdEucJxruWVoDOm3kbx5xg4Fb2B7LawF/a0aWcUDhZpahh RCtqAQx0q2YzTZmQ+OrGt+FSV8qBcq4ZhYXZP+u/UCNQtQWzbVP42j7TfIFS4pOQY/bY oNNqZu69owGTFgORRcXcv6N381ewUciPV+8ny1vDBexGhuXiWVfQDudTYr+PJgCHDcqs qjicjvcV86xkqNiEx8iAV7yLmD+Nr9FSbEdLVemPJHwz5WxC3dG63EpJdXqMQJGc1XOc RPTuVT4eAUjPigAo6ucrHbe2wxTkT6CvF4ftdqUe0mbai/YiCRni/y+cNxlIwF2F2T9t VGDw== X-Gm-Message-State: AO0yUKVF4R2CMI0rAKxUnd/hk6kwP/VgaOn/zWPnvna9rigaCsJgyVL9 7IU8prYYgoEKmEKYfV2INLkp X-Google-Smtp-Source: AK7set8vqYJJRJHg//I69+pxyUgVmk9YyW9psPIRxA9M3tOITR4ay59nQeNDWbOXJGKI2b5YC0T8cA== X-Received: by 2002:a62:79c4:0:b0:622:c72a:d0e0 with SMTP id u187-20020a6279c4000000b00622c72ad0e0mr2819170pfc.13.1678954339802; Thu, 16 Mar 2023 01:12:19 -0700 (PDT) Received: from localhost.localdomain ([117.207.30.24]) by smtp.gmail.com with ESMTPSA id 13-20020aa7910d000000b005d9984a947bsm4804422pfh.139.2023.03.16.01.12.16 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 16 Mar 2023 01:12:19 -0700 (PDT) From: Manivannan Sadhasivam To: andersson@kernel.org, lpieralisi@kernel.org, kw@linux.com, krzysztof.kozlowski+dt@linaro.org, robh@kernel.org Cc: konrad.dybcio@linaro.org, linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, quic_srichara@quicinc.com, Manivannan Sadhasivam Subject: [PATCH v5 11/19] PCI: qcom: Use bulk reset APIs for handling resets for IP rev 2.3.3 Date: Thu, 16 Mar 2023 13:41:09 +0530 Message-Id: <20230316081117.14288-12-manivannan.sadhasivam@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230316081117.14288-1-manivannan.sadhasivam@linaro.org> References: <20230316081117.14288-1-manivannan.sadhasivam@linaro.org> MIME-Version: 1.0 X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_NONE, SPF_HELO_NONE,SPF_PASS autolearn=unavailable autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org All the resets are asserted and deasserted at the same time. So the bulk reset APIs can be used to handle them together. This simplifies the code a lot. Signed-off-by: Manivannan Sadhasivam --- drivers/pci/controller/dwc/pcie-qcom.c | 49 ++++++++++++-------------- 1 file changed, 23 insertions(+), 26 deletions(-) diff --git a/drivers/pci/controller/dwc/pcie-qcom.c b/drivers/pci/controller/dwc/pcie-qcom.c index 42b851bdf1a9..d673cb29c913 100644 --- a/drivers/pci/controller/dwc/pcie-qcom.c +++ b/drivers/pci/controller/dwc/pcie-qcom.c @@ -170,9 +170,10 @@ struct qcom_pcie_resources_2_3_2 { }; #define QCOM_PCIE_2_3_3_MAX_CLOCKS 5 +#define QCOM_PCIE_2_3_3_MAX_RESETS 7 struct qcom_pcie_resources_2_3_3 { struct clk_bulk_data clks[QCOM_PCIE_2_3_3_MAX_CLOCKS]; - struct reset_control *rst[7]; + struct reset_control_bulk_data rst[QCOM_PCIE_2_3_3_MAX_RESETS]; }; #define QCOM_PCIE_2_4_0_MAX_CLOCKS 4 @@ -889,10 +890,6 @@ static int qcom_pcie_get_resources_2_3_3(struct qcom_pcie *pcie) struct qcom_pcie_resources_2_3_3 *res = &pcie->res.v2_3_3; struct dw_pcie *pci = pcie->pci; struct device *dev = pci->dev; - int i; - const char *rst_names[] = { "axi_m", "axi_s", "pipe", - "axi_m_sticky", "sticky", - "ahb", "sleep", }; int ret; res->clks[0].id = "iface"; @@ -905,11 +902,17 @@ static int qcom_pcie_get_resources_2_3_3(struct qcom_pcie *pcie) if (ret < 0) return ret; - for (i = 0; i < ARRAY_SIZE(rst_names); i++) { - res->rst[i] = devm_reset_control_get(dev, rst_names[i]); - if (IS_ERR(res->rst[i])) - return PTR_ERR(res->rst[i]); - } + res->rst[0].id = "axi_m"; + res->rst[1].id = "axi_s"; + res->rst[2].id = "pipe"; + res->rst[3].id = "axi_m_sticky"; + res->rst[4].id = "sticky"; + res->rst[5].id = "ahb"; + res->rst[6].id = "sleep"; + + ret = devm_reset_control_bulk_get_exclusive(dev, ARRAY_SIZE(res->rst), res->rst); + if (ret < 0) + return ret; return 0; } @@ -926,25 +929,20 @@ static int qcom_pcie_init_2_3_3(struct qcom_pcie *pcie) struct qcom_pcie_resources_2_3_3 *res = &pcie->res.v2_3_3; struct dw_pcie *pci = pcie->pci; struct device *dev = pci->dev; - int i, ret; + int ret; - for (i = 0; i < ARRAY_SIZE(res->rst); i++) { - ret = reset_control_assert(res->rst[i]); - if (ret) { - dev_err(dev, "reset #%d assert failed (%d)\n", i, ret); - return ret; - } + ret = reset_control_bulk_assert(ARRAY_SIZE(res->rst), res->rst); + if (ret < 0) { + dev_err(dev, "cannot assert resets\n"); + return ret; } usleep_range(2000, 2500); - for (i = 0; i < ARRAY_SIZE(res->rst); i++) { - ret = reset_control_deassert(res->rst[i]); - if (ret) { - dev_err(dev, "reset #%d deassert failed (%d)\n", i, - ret); - return ret; - } + ret = reset_control_bulk_deassert(ARRAY_SIZE(res->rst), res->rst); + if (ret < 0) { + dev_err(dev, "cannot deassert resets\n"); + return ret; } /* @@ -966,8 +964,7 @@ static int qcom_pcie_init_2_3_3(struct qcom_pcie *pcie) * Not checking for failure, will anyway return * the original failure in 'ret'. */ - for (i = 0; i < ARRAY_SIZE(res->rst); i++) - reset_control_assert(res->rst[i]); + reset_control_bulk_assert(ARRAY_SIZE(res->rst), res->rst); return ret; } From patchwork Thu Mar 16 08:11:10 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Manivannan Sadhasivam X-Patchwork-Id: 1757770 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; 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So the bulk reset APIs can be used to handle them together. This simplifies the code a lot. It should be noted that there were delays in-between the reset asserts and deasserts. But going by the config used by other revisions, those delays are not really necessary. So a single delay after all asserts and one after deasserts is used. The total number of resets supported is 12 but only ipq4019 is using all of them. Tested-by: Sricharan Ramabadhran Signed-off-by: Manivannan Sadhasivam --- drivers/pci/controller/dwc/pcie-qcom.c | 238 ++++--------------------- 1 file changed, 30 insertions(+), 208 deletions(-) diff --git a/drivers/pci/controller/dwc/pcie-qcom.c b/drivers/pci/controller/dwc/pcie-qcom.c index d673cb29c913..8baeee3189b1 100644 --- a/drivers/pci/controller/dwc/pcie-qcom.c +++ b/drivers/pci/controller/dwc/pcie-qcom.c @@ -176,22 +176,13 @@ struct qcom_pcie_resources_2_3_3 { struct reset_control_bulk_data rst[QCOM_PCIE_2_3_3_MAX_RESETS]; }; -#define QCOM_PCIE_2_4_0_MAX_CLOCKS 4 +#define QCOM_PCIE_2_4_0_MAX_CLOCKS 4 +#define QCOM_PCIE_2_4_0_MAX_RESETS 12 struct qcom_pcie_resources_2_4_0 { struct clk_bulk_data clks[QCOM_PCIE_2_4_0_MAX_CLOCKS]; int num_clks; - struct reset_control *axi_m_reset; - struct reset_control *axi_s_reset; - struct reset_control *pipe_reset; - struct reset_control *axi_m_vmid_reset; - struct reset_control *axi_s_xpu_reset; - struct reset_control *parf_reset; - struct reset_control *phy_reset; - struct reset_control *axi_m_sticky_reset; - struct reset_control *pipe_sticky_reset; - struct reset_control *pwr_reset; - struct reset_control *ahb_reset; - struct reset_control *phy_ahb_reset; + struct reset_control_bulk_data resets[QCOM_PCIE_2_4_0_MAX_RESETS]; + int num_resets; }; /* 6 clocks typically, 7 for sm8250 */ @@ -626,65 +617,24 @@ static int qcom_pcie_get_resources_2_4_0(struct qcom_pcie *pcie) if (ret < 0) return ret; - res->axi_m_reset = devm_reset_control_get_exclusive(dev, "axi_m"); - if (IS_ERR(res->axi_m_reset)) - return PTR_ERR(res->axi_m_reset); - - res->axi_s_reset = devm_reset_control_get_exclusive(dev, "axi_s"); - if (IS_ERR(res->axi_s_reset)) - return PTR_ERR(res->axi_s_reset); - - if (is_ipq) { - /* - * These resources relates to the PHY or are secure clocks, but - * are controlled here for IPQ4019 - */ - res->pipe_reset = devm_reset_control_get_exclusive(dev, "pipe"); - if (IS_ERR(res->pipe_reset)) - return PTR_ERR(res->pipe_reset); - - res->axi_m_vmid_reset = devm_reset_control_get_exclusive(dev, - "axi_m_vmid"); - if (IS_ERR(res->axi_m_vmid_reset)) - return PTR_ERR(res->axi_m_vmid_reset); - - res->axi_s_xpu_reset = devm_reset_control_get_exclusive(dev, - "axi_s_xpu"); - if (IS_ERR(res->axi_s_xpu_reset)) - return PTR_ERR(res->axi_s_xpu_reset); - - res->parf_reset = devm_reset_control_get_exclusive(dev, "parf"); - if (IS_ERR(res->parf_reset)) - return PTR_ERR(res->parf_reset); - - res->phy_reset = devm_reset_control_get_exclusive(dev, "phy"); - if (IS_ERR(res->phy_reset)) - return PTR_ERR(res->phy_reset); - } - - res->axi_m_sticky_reset = devm_reset_control_get_exclusive(dev, - "axi_m_sticky"); - if (IS_ERR(res->axi_m_sticky_reset)) - return PTR_ERR(res->axi_m_sticky_reset); - - res->pipe_sticky_reset = devm_reset_control_get_exclusive(dev, - "pipe_sticky"); - if (IS_ERR(res->pipe_sticky_reset)) - return PTR_ERR(res->pipe_sticky_reset); - - res->pwr_reset = devm_reset_control_get_exclusive(dev, "pwr"); - if (IS_ERR(res->pwr_reset)) - return PTR_ERR(res->pwr_reset); - - res->ahb_reset = devm_reset_control_get_exclusive(dev, "ahb"); - if (IS_ERR(res->ahb_reset)) - return PTR_ERR(res->ahb_reset); + res->resets[0].id = "axi_m"; + res->resets[1].id = "axi_s"; + res->resets[2].id = "axi_m_sticky"; + res->resets[3].id = "pipe_sticky"; + res->resets[4].id = "pwr"; + res->resets[5].id = "ahb"; + res->resets[6].id = "pipe"; + res->resets[7].id = "axi_m_vmid"; + res->resets[8].id = "axi_s_xpu"; + res->resets[9].id = "parf"; + res->resets[10].id = "phy"; + res->resets[11].id = "phy_ahb"; + + res->num_resets = is_ipq ? 12 : 6; - if (is_ipq) { - res->phy_ahb_reset = devm_reset_control_get_exclusive(dev, "phy_ahb"); - if (IS_ERR(res->phy_ahb_reset)) - return PTR_ERR(res->phy_ahb_reset); - } + ret = devm_reset_control_bulk_get_exclusive(dev, res->num_resets, res->resets); + if (ret < 0) + return ret; return 0; } @@ -693,15 +643,7 @@ static void qcom_pcie_deinit_2_4_0(struct qcom_pcie *pcie) { struct qcom_pcie_resources_2_4_0 *res = &pcie->res.v2_4_0; - reset_control_assert(res->axi_m_reset); - reset_control_assert(res->axi_s_reset); - reset_control_assert(res->pipe_reset); - reset_control_assert(res->pipe_sticky_reset); - reset_control_assert(res->phy_reset); - reset_control_assert(res->phy_ahb_reset); - reset_control_assert(res->axi_m_sticky_reset); - reset_control_assert(res->pwr_reset); - reset_control_assert(res->ahb_reset); + reset_control_bulk_assert(res->num_resets, res->resets); clk_bulk_disable_unprepare(res->num_clks, res->clks); } @@ -712,149 +654,29 @@ static int qcom_pcie_init_2_4_0(struct qcom_pcie *pcie) struct device *dev = pci->dev; int ret; - ret = reset_control_assert(res->axi_m_reset); - if (ret) { - dev_err(dev, "cannot assert axi master reset\n"); - return ret; - } - - ret = reset_control_assert(res->axi_s_reset); - if (ret) { - dev_err(dev, "cannot assert axi slave reset\n"); - return ret; - } - - usleep_range(10000, 12000); - - ret = reset_control_assert(res->pipe_reset); - if (ret) { - dev_err(dev, "cannot assert pipe reset\n"); - return ret; - } - - ret = reset_control_assert(res->pipe_sticky_reset); - if (ret) { - dev_err(dev, "cannot assert pipe sticky reset\n"); - return ret; - } - - ret = reset_control_assert(res->phy_reset); - if (ret) { - dev_err(dev, "cannot assert phy reset\n"); - return ret; - } - - ret = reset_control_assert(res->phy_ahb_reset); - if (ret) { - dev_err(dev, "cannot assert phy ahb reset\n"); + ret = reset_control_bulk_assert(res->num_resets, res->resets); + if (ret < 0) { + dev_err(dev, "cannot assert resets\n"); return ret; } usleep_range(10000, 12000); - ret = reset_control_assert(res->axi_m_sticky_reset); - if (ret) { - dev_err(dev, "cannot assert axi master sticky reset\n"); - return ret; - } - - ret = reset_control_assert(res->pwr_reset); - if (ret) { - dev_err(dev, "cannot assert power reset\n"); - return ret; - } - - ret = reset_control_assert(res->ahb_reset); - if (ret) { - dev_err(dev, "cannot assert ahb reset\n"); + ret = reset_control_bulk_deassert(res->num_resets, res->resets); + if (ret < 0) { + dev_err(dev, "cannot deassert resets\n"); return ret; } usleep_range(10000, 12000); - ret = reset_control_deassert(res->phy_ahb_reset); + ret = clk_bulk_prepare_enable(res->num_clks, res->clks); if (ret) { - dev_err(dev, "cannot deassert phy ahb reset\n"); + reset_control_bulk_assert(res->num_resets, res->resets); return ret; } - ret = reset_control_deassert(res->phy_reset); - if (ret) { - dev_err(dev, "cannot deassert phy reset\n"); - goto err_rst_phy; - } - - ret = reset_control_deassert(res->pipe_reset); - if (ret) { - dev_err(dev, "cannot deassert pipe reset\n"); - goto err_rst_pipe; - } - - ret = reset_control_deassert(res->pipe_sticky_reset); - if (ret) { - dev_err(dev, "cannot deassert pipe sticky reset\n"); - goto err_rst_pipe_sticky; - } - - usleep_range(10000, 12000); - - ret = reset_control_deassert(res->axi_m_reset); - if (ret) { - dev_err(dev, "cannot deassert axi master reset\n"); - goto err_rst_axi_m; - } - - ret = reset_control_deassert(res->axi_m_sticky_reset); - if (ret) { - dev_err(dev, "cannot deassert axi master sticky reset\n"); - goto err_rst_axi_m_sticky; - } - - ret = reset_control_deassert(res->axi_s_reset); - if (ret) { - dev_err(dev, "cannot deassert axi slave reset\n"); - goto err_rst_axi_s; - } - - ret = reset_control_deassert(res->pwr_reset); - if (ret) { - dev_err(dev, "cannot deassert power reset\n"); - goto err_rst_pwr; - } - - ret = reset_control_deassert(res->ahb_reset); - if (ret) { - dev_err(dev, "cannot deassert ahb reset\n"); - goto err_rst_ahb; - } - - usleep_range(10000, 12000); - - ret = clk_bulk_prepare_enable(res->num_clks, res->clks); - if (ret) - goto err_clks; - return 0; - -err_clks: - reset_control_assert(res->ahb_reset); -err_rst_ahb: - reset_control_assert(res->pwr_reset); -err_rst_pwr: - reset_control_assert(res->axi_s_reset); -err_rst_axi_s: - reset_control_assert(res->axi_m_sticky_reset); -err_rst_axi_m_sticky: - reset_control_assert(res->axi_m_reset); -err_rst_axi_m: - reset_control_assert(res->pipe_sticky_reset); -err_rst_pipe_sticky: - reset_control_assert(res->pipe_reset); -err_rst_pipe: - reset_control_assert(res->phy_reset); -err_rst_phy: - reset_control_assert(res->phy_ahb_reset); - return ret; } static int qcom_pcie_post_init_2_4_0(struct qcom_pcie *pcie) From patchwork Thu Mar 16 08:11:11 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Manivannan Sadhasivam X-Patchwork-Id: 1757771 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=2620:137:e000::1:20; helo=out1.vger.email; envelope-from=linux-pci-owner@vger.kernel.org; receiver=) Authentication-Results: legolas.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=linaro.org header.i=@linaro.org header.a=rsa-sha256 header.s=google header.b=UeMZdRVo; dkim-atps=neutral Received: from out1.vger.email (out1.vger.email [IPv6:2620:137:e000::1:20]) by legolas.ozlabs.org (Postfix) with ESMTP id 4Pcg4j0rtmz246q for ; 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Thu, 16 Mar 2023 01:12:28 -0700 (PDT) From: Manivannan Sadhasivam To: andersson@kernel.org, lpieralisi@kernel.org, kw@linux.com, krzysztof.kozlowski+dt@linaro.org, robh@kernel.org Cc: konrad.dybcio@linaro.org, linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, quic_srichara@quicinc.com, Manivannan Sadhasivam Subject: [PATCH v5 13/19] PCI: qcom: Use macros for defining total no. of clocks & supplies Date: Thu, 16 Mar 2023 13:41:11 +0530 Message-Id: <20230316081117.14288-14-manivannan.sadhasivam@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230316081117.14288-1-manivannan.sadhasivam@linaro.org> References: <20230316081117.14288-1-manivannan.sadhasivam@linaro.org> MIME-Version: 1.0 X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_NONE, SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org To keep uniformity, let's use macros to define the total number of clocks and supplies in qcom_pcie_resources_{2_7_0/2_9_0} structs. Signed-off-by: Manivannan Sadhasivam --- drivers/pci/controller/dwc/pcie-qcom.c | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) diff --git a/drivers/pci/controller/dwc/pcie-qcom.c b/drivers/pci/controller/dwc/pcie-qcom.c index 8baeee3189b1..5aef890e627a 100644 --- a/drivers/pci/controller/dwc/pcie-qcom.c +++ b/drivers/pci/controller/dwc/pcie-qcom.c @@ -185,16 +185,18 @@ struct qcom_pcie_resources_2_4_0 { int num_resets; }; -/* 6 clocks typically, 7 for sm8250 */ +#define QCOM_PCIE_2_7_0_MAX_CLOCKS 12 +#define QCOM_PCIE_2_7_0_MAX_SUPPLIES 2 struct qcom_pcie_resources_2_7_0 { - struct clk_bulk_data clks[12]; + struct clk_bulk_data clks[QCOM_PCIE_2_7_0_MAX_CLOCKS]; int num_clks; - struct regulator_bulk_data supplies[2]; + struct regulator_bulk_data supplies[QCOM_PCIE_2_7_0_MAX_SUPPLIES]; struct reset_control *pci_reset; }; +#define QCOM_PCIE_2_9_0_MAX_CLOCKS 5 struct qcom_pcie_resources_2_9_0 { - struct clk_bulk_data clks[5]; + struct clk_bulk_data clks[QCOM_PCIE_2_9_0_MAX_CLOCKS]; struct reset_control *rst; }; From patchwork Thu Mar 16 08:11:12 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Manivannan Sadhasivam X-Patchwork-Id: 1757772 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=2620:137:e000::1:20; helo=out1.vger.email; envelope-from=linux-pci-owner@vger.kernel.org; receiver=) Authentication-Results: legolas.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=linaro.org header.i=@linaro.org header.a=rsa-sha256 header.s=google header.b=CjFdJf4w; dkim-atps=neutral Received: from out1.vger.email (out1.vger.email [IPv6:2620:137:e000::1:20]) by legolas.ozlabs.org (Postfix) with ESMTP id 4Pcg501zhSz246q for ; Thu, 16 Mar 2023 19:13:40 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229820AbjCPINi (ORCPT ); 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Thu, 16 Mar 2023 01:12:33 -0700 (PDT) From: Manivannan Sadhasivam To: andersson@kernel.org, lpieralisi@kernel.org, kw@linux.com, krzysztof.kozlowski+dt@linaro.org, robh@kernel.org Cc: konrad.dybcio@linaro.org, linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, quic_srichara@quicinc.com, Manivannan Sadhasivam Subject: [PATCH v5 14/19] PCI: qcom: Rename qcom_pcie_config_sid_sm8250() to reflect IP version Date: Thu, 16 Mar 2023 13:41:12 +0530 Message-Id: <20230316081117.14288-15-manivannan.sadhasivam@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230316081117.14288-1-manivannan.sadhasivam@linaro.org> References: <20230316081117.14288-1-manivannan.sadhasivam@linaro.org> MIME-Version: 1.0 X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_NONE, SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org qcom_pcie_config_sid_sm8250() function no longer applies only to SM8250. So let's rename it to reflect the actual IP version and also move its definition to keep it sorted as per IP revisions. Signed-off-by: Manivannan Sadhasivam --- drivers/pci/controller/dwc/pcie-qcom.c | 143 ++++++++++++------------- 1 file changed, 71 insertions(+), 72 deletions(-) diff --git a/drivers/pci/controller/dwc/pcie-qcom.c b/drivers/pci/controller/dwc/pcie-qcom.c index 5aef890e627a..7daff0421b86 100644 --- a/drivers/pci/controller/dwc/pcie-qcom.c +++ b/drivers/pci/controller/dwc/pcie-qcom.c @@ -961,6 +961,76 @@ static void qcom_pcie_deinit_2_7_0(struct qcom_pcie *pcie) regulator_bulk_disable(ARRAY_SIZE(res->supplies), res->supplies); } +static int qcom_pcie_config_sid_1_9_0(struct qcom_pcie *pcie) +{ + /* iommu map structure */ + struct { + u32 bdf; + u32 phandle; + u32 smmu_sid; + u32 smmu_sid_len; + } *map; + void __iomem *bdf_to_sid_base = pcie->parf + PARF_BDF_TO_SID_TABLE_N; + struct device *dev = pcie->pci->dev; + u8 qcom_pcie_crc8_table[CRC8_TABLE_SIZE]; + int i, nr_map, size = 0; + u32 smmu_sid_base; + + of_get_property(dev->of_node, "iommu-map", &size); + if (!size) + return 0; + + map = kzalloc(size, GFP_KERNEL); + if (!map) + return -ENOMEM; + + of_property_read_u32_array(dev->of_node, "iommu-map", (u32 *)map, + size / sizeof(u32)); + + nr_map = size / (sizeof(*map)); + + crc8_populate_msb(qcom_pcie_crc8_table, QCOM_PCIE_CRC8_POLYNOMIAL); + + /* Registers need to be zero out first */ + memset_io(bdf_to_sid_base, 0, CRC8_TABLE_SIZE * sizeof(u32)); + + /* Extract the SMMU SID base from the first entry of iommu-map */ + smmu_sid_base = map[0].smmu_sid; + + /* Look for an available entry to hold the mapping */ + for (i = 0; i < nr_map; i++) { + __be16 bdf_be = cpu_to_be16(map[i].bdf); + u32 val; + u8 hash; + + hash = crc8(qcom_pcie_crc8_table, (u8 *)&bdf_be, sizeof(bdf_be), 0); + + val = readl(bdf_to_sid_base + hash * sizeof(u32)); + + /* If the register is already populated, look for next available entry */ + while (val) { + u8 current_hash = hash++; + u8 next_mask = 0xff; + + /* If NEXT field is NULL then update it with next hash */ + if (!(val & next_mask)) { + val |= (u32)hash; + writel(val, bdf_to_sid_base + current_hash * sizeof(u32)); + } + + val = readl(bdf_to_sid_base + hash * sizeof(u32)); + } + + /* BDF [31:16] | SID [15:8] | NEXT [7:0] */ + val = map[i].bdf << 16 | (map[i].smmu_sid - smmu_sid_base) << 8 | 0; + writel(val, bdf_to_sid_base + hash * sizeof(u32)); + } + + kfree(map); + + return 0; +} + static int qcom_pcie_get_resources_2_9_0(struct qcom_pcie *pcie) { struct qcom_pcie_resources_2_9_0 *res = &pcie->res.v2_9_0; @@ -1075,77 +1145,6 @@ static int qcom_pcie_link_up(struct dw_pcie *pci) return !!(val & PCI_EXP_LNKSTA_DLLLA); } -static int qcom_pcie_config_sid_sm8250(struct qcom_pcie *pcie) -{ - /* iommu map structure */ - struct { - u32 bdf; - u32 phandle; - u32 smmu_sid; - u32 smmu_sid_len; - } *map; - void __iomem *bdf_to_sid_base = pcie->parf + PARF_BDF_TO_SID_TABLE_N; - struct device *dev = pcie->pci->dev; - u8 qcom_pcie_crc8_table[CRC8_TABLE_SIZE]; - int i, nr_map, size = 0; - u32 smmu_sid_base; - - of_get_property(dev->of_node, "iommu-map", &size); - if (!size) - return 0; - - map = kzalloc(size, GFP_KERNEL); - if (!map) - return -ENOMEM; - - of_property_read_u32_array(dev->of_node, - "iommu-map", (u32 *)map, size / sizeof(u32)); - - nr_map = size / (sizeof(*map)); - - crc8_populate_msb(qcom_pcie_crc8_table, QCOM_PCIE_CRC8_POLYNOMIAL); - - /* Registers need to be zero out first */ - memset_io(bdf_to_sid_base, 0, CRC8_TABLE_SIZE * sizeof(u32)); - - /* Extract the SMMU SID base from the first entry of iommu-map */ - smmu_sid_base = map[0].smmu_sid; - - /* Look for an available entry to hold the mapping */ - for (i = 0; i < nr_map; i++) { - __be16 bdf_be = cpu_to_be16(map[i].bdf); - u32 val; - u8 hash; - - hash = crc8(qcom_pcie_crc8_table, (u8 *)&bdf_be, sizeof(bdf_be), - 0); - - val = readl(bdf_to_sid_base + hash * sizeof(u32)); - - /* If the register is already populated, look for next available entry */ - while (val) { - u8 current_hash = hash++; - u8 next_mask = 0xff; - - /* If NEXT field is NULL then update it with next hash */ - if (!(val & next_mask)) { - val |= (u32)hash; - writel(val, bdf_to_sid_base + current_hash * sizeof(u32)); - } - - val = readl(bdf_to_sid_base + hash * sizeof(u32)); - } - - /* BDF [31:16] | SID [15:8] | NEXT [7:0] */ - val = map[i].bdf << 16 | (map[i].smmu_sid - smmu_sid_base) << 8 | 0; - writel(val, bdf_to_sid_base + hash * sizeof(u32)); - } - - kfree(map); - - return 0; -} - static int qcom_pcie_host_init(struct dw_pcie_rp *pp) { struct dw_pcie *pci = to_dw_pcie_from_pp(pp); @@ -1266,7 +1265,7 @@ static const struct qcom_pcie_ops ops_1_9_0 = { .init = qcom_pcie_init_2_7_0, .deinit = qcom_pcie_deinit_2_7_0, .ltssm_enable = qcom_pcie_2_3_2_ltssm_enable, - .config_sid = qcom_pcie_config_sid_sm8250, + .config_sid = qcom_pcie_config_sid_1_9_0, }; /* Qcom IP rev.: 2.9.0 Synopsys IP rev.: 5.00a */ From patchwork Thu Mar 16 08:11:13 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Manivannan Sadhasivam X-Patchwork-Id: 1757773 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; 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Reviewed-by: Krzysztof Kozlowski Signed-off-by: Manivannan Sadhasivam --- Documentation/devicetree/bindings/pci/qcom,pcie.yaml | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-) diff --git a/Documentation/devicetree/bindings/pci/qcom,pcie.yaml b/Documentation/devicetree/bindings/pci/qcom,pcie.yaml index fb32c43dd12d..ecbb0f9efa21 100644 --- a/Documentation/devicetree/bindings/pci/qcom,pcie.yaml +++ b/Documentation/devicetree/bindings/pci/qcom,pcie.yaml @@ -44,11 +44,11 @@ properties: reg: minItems: 4 - maxItems: 5 + maxItems: 6 reg-names: minItems: 4 - maxItems: 5 + maxItems: 6 interrupts: minItems: 1 @@ -185,13 +185,15 @@ allOf: properties: reg: minItems: 4 - maxItems: 4 + maxItems: 5 reg-names: + minItems: 4 items: - const: parf # Qualcomm specific registers - const: dbi # DesignWare PCIe registers - const: elbi # External local bus interface registers - const: config # PCIe configuration space + - const: mhi # MHI registers - if: properties: @@ -209,14 +211,16 @@ allOf: properties: reg: minItems: 5 - maxItems: 5 + maxItems: 6 reg-names: + minItems: 5 items: - const: parf # Qualcomm specific registers - const: dbi # DesignWare PCIe registers - const: elbi # External local bus interface registers - const: atu # ATU address space - const: config # PCIe configuration space + - const: mhi # MHI registers - if: properties: From patchwork Thu Mar 16 08:11:14 2023 Content-Type: text/plain; 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Thu, 16 Mar 2023 01:12:43 -0700 (PDT) From: Manivannan Sadhasivam To: andersson@kernel.org, lpieralisi@kernel.org, kw@linux.com, krzysztof.kozlowski+dt@linaro.org, robh@kernel.org Cc: konrad.dybcio@linaro.org, linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, quic_srichara@quicinc.com, Manivannan Sadhasivam Subject: [PATCH v5 16/19] arm64: dts: qcom: sdm845: Add "mhi" region to the PCIe nodes Date: Thu, 16 Mar 2023 13:41:14 +0530 Message-Id: <20230316081117.14288-17-manivannan.sadhasivam@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230316081117.14288-1-manivannan.sadhasivam@linaro.org> References: <20230316081117.14288-1-manivannan.sadhasivam@linaro.org> MIME-Version: 1.0 X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_NONE, SPF_HELO_NONE,SPF_PASS autolearn=unavailable autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org The "mhi" region contains the debug registers that could be used to monitor the PCIe link transitions. Signed-off-by: Manivannan Sadhasivam --- arch/arm64/boot/dts/qcom/sdm845.dtsi | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) diff --git a/arch/arm64/boot/dts/qcom/sdm845.dtsi b/arch/arm64/boot/dts/qcom/sdm845.dtsi index 479859bd8ab3..46caac9acc95 100644 --- a/arch/arm64/boot/dts/qcom/sdm845.dtsi +++ b/arch/arm64/boot/dts/qcom/sdm845.dtsi @@ -2282,8 +2282,9 @@ pcie0: pci@1c00000 { reg = <0 0x01c00000 0 0x2000>, <0 0x60000000 0 0xf1d>, <0 0x60000f20 0 0xa8>, - <0 0x60100000 0 0x100000>; - reg-names = "parf", "dbi", "elbi", "config"; + <0 0x60100000 0 0x100000>, + <0 0x01c07000 0 0x1000>; + reg-names = "parf", "dbi", "elbi", "config", "mhi"; device_type = "pci"; linux,pci-domain = <0>; bus-range = <0x00 0xff>; @@ -2387,8 +2388,9 @@ pcie1: pci@1c08000 { reg = <0 0x01c08000 0 0x2000>, <0 0x40000000 0 0xf1d>, <0 0x40000f20 0 0xa8>, - <0 0x40100000 0 0x100000>; - reg-names = "parf", "dbi", "elbi", "config"; + <0 0x40100000 0 0x100000>, + <0 0x01c0c000 0 0x1000>; + reg-names = "parf", "dbi", "elbi", "config", "mhi"; device_type = "pci"; linux,pci-domain = <1>; bus-range = <0x00 0xff>; From patchwork Thu Mar 16 08:11:15 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Manivannan Sadhasivam X-Patchwork-Id: 1757776 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=2620:137:e000::1:20; helo=out1.vger.email; envelope-from=linux-pci-owner@vger.kernel.org; receiver=) Authentication-Results: legolas.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=linaro.org header.i=@linaro.org header.a=rsa-sha256 header.s=google header.b=RwRAaEMI; dkim-atps=neutral Received: from out1.vger.email (out1.vger.email [IPv6:2620:137:e000::1:20]) by legolas.ozlabs.org (Postfix) with ESMTP id 4Pcg5v5XTFz246q for ; Thu, 16 Mar 2023 19:14:27 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231195AbjCPIOZ (ORCPT ); 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Thu, 16 Mar 2023 01:12:48 -0700 (PDT) From: Manivannan Sadhasivam To: andersson@kernel.org, lpieralisi@kernel.org, kw@linux.com, krzysztof.kozlowski+dt@linaro.org, robh@kernel.org Cc: konrad.dybcio@linaro.org, linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, quic_srichara@quicinc.com, Manivannan Sadhasivam Subject: [PATCH v5 17/19] arm64: dts: qcom: sm8250: Add "mhi" region to the PCIe nodes Date: Thu, 16 Mar 2023 13:41:15 +0530 Message-Id: <20230316081117.14288-18-manivannan.sadhasivam@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230316081117.14288-1-manivannan.sadhasivam@linaro.org> References: <20230316081117.14288-1-manivannan.sadhasivam@linaro.org> MIME-Version: 1.0 X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_NONE, SPF_HELO_NONE,SPF_PASS autolearn=unavailable autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org The "mhi" region contains the debug registers that could be used to monitor the PCIe link transitions. Signed-off-by: Manivannan Sadhasivam --- arch/arm64/boot/dts/qcom/sm8250.dtsi | 15 +++++++++------ 1 file changed, 9 insertions(+), 6 deletions(-) diff --git a/arch/arm64/boot/dts/qcom/sm8250.dtsi b/arch/arm64/boot/dts/qcom/sm8250.dtsi index 2f0e460acccd..81383e20d3d9 100644 --- a/arch/arm64/boot/dts/qcom/sm8250.dtsi +++ b/arch/arm64/boot/dts/qcom/sm8250.dtsi @@ -1824,8 +1824,9 @@ pcie0: pci@1c00000 { <0 0x60000000 0 0xf1d>, <0 0x60000f20 0 0xa8>, <0 0x60001000 0 0x1000>, - <0 0x60100000 0 0x100000>; - reg-names = "parf", "dbi", "elbi", "atu", "config"; + <0 0x60100000 0 0x100000>, + <0 0x01c03000 0 0x1000>; + reg-names = "parf", "dbi", "elbi", "atu", "config", "mhi"; device_type = "pci"; linux,pci-domain = <0>; bus-range = <0x00 0xff>; @@ -1933,8 +1934,9 @@ pcie1: pci@1c08000 { <0 0x40000000 0 0xf1d>, <0 0x40000f20 0 0xa8>, <0 0x40001000 0 0x1000>, - <0 0x40100000 0 0x100000>; - reg-names = "parf", "dbi", "elbi", "atu", "config"; + <0 0x40100000 0 0x100000>, + <0 0x01c0b000 0 0x1000>; + reg-names = "parf", "dbi", "elbi", "atu", "config", "mhi"; device_type = "pci"; linux,pci-domain = <1>; bus-range = <0x00 0xff>; @@ -2041,8 +2043,9 @@ pcie2: pci@1c10000 { <0 0x64000000 0 0xf1d>, <0 0x64000f20 0 0xa8>, <0 0x64001000 0 0x1000>, - <0 0x64100000 0 0x100000>; - reg-names = "parf", "dbi", "elbi", "atu", "config"; + <0 0x64100000 0 0x100000>, + <0 0x01c13000 0 0x1000>; + reg-names = "parf", "dbi", "elbi", "atu", "config", "mhi"; device_type = "pci"; linux,pci-domain = <2>; bus-range = <0x00 0xff>; From patchwork Thu Mar 16 08:11:16 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Manivannan Sadhasivam X-Patchwork-Id: 1757777 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=2620:137:e000::1:20; helo=out1.vger.email; envelope-from=linux-pci-owner@vger.kernel.org; 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Thu, 16 Mar 2023 01:12:53 -0700 (PDT) Received: from localhost.localdomain ([117.207.30.24]) by smtp.gmail.com with ESMTPSA id 13-20020aa7910d000000b005d9984a947bsm4804422pfh.139.2023.03.16.01.12.48 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 16 Mar 2023 01:12:52 -0700 (PDT) From: Manivannan Sadhasivam To: andersson@kernel.org, lpieralisi@kernel.org, kw@linux.com, krzysztof.kozlowski+dt@linaro.org, robh@kernel.org Cc: konrad.dybcio@linaro.org, linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, quic_srichara@quicinc.com, Manivannan Sadhasivam Subject: [PATCH v5 18/19] arm64: dts: qcom: sc8280xp: Add "mhi" region to the PCIe nodes Date: Thu, 16 Mar 2023 13:41:16 +0530 Message-Id: <20230316081117.14288-19-manivannan.sadhasivam@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230316081117.14288-1-manivannan.sadhasivam@linaro.org> References: <20230316081117.14288-1-manivannan.sadhasivam@linaro.org> MIME-Version: 1.0 X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_NONE, SPF_HELO_NONE,SPF_PASS autolearn=unavailable autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org The "mhi" region contains the debug registers that could be used to monitor the PCIe link transitions. Signed-off-by: Manivannan Sadhasivam --- arch/arm64/boot/dts/qcom/sc8280xp.dtsi | 25 +++++++++++++++---------- 1 file changed, 15 insertions(+), 10 deletions(-) diff --git a/arch/arm64/boot/dts/qcom/sc8280xp.dtsi b/arch/arm64/boot/dts/qcom/sc8280xp.dtsi index 0d02599d8867..eb87c3e5d2bc 100644 --- a/arch/arm64/boot/dts/qcom/sc8280xp.dtsi +++ b/arch/arm64/boot/dts/qcom/sc8280xp.dtsi @@ -1653,8 +1653,9 @@ pcie4: pcie@1c00000 { <0x0 0x30000000 0x0 0xf1d>, <0x0 0x30000f20 0x0 0xa8>, <0x0 0x30001000 0x0 0x1000>, - <0x0 0x30100000 0x0 0x100000>; - reg-names = "parf", "dbi", "elbi", "atu", "config"; + <0x0 0x30100000 0x0 0x100000>, + <0x0 0x01c03000 0x0 0x1000>; + reg-names = "parf", "dbi", "elbi", "atu", "config", "mhi"; #address-cells = <3>; #size-cells = <2>; ranges = <0x01000000 0x0 0x30200000 0x0 0x30200000 0x0 0x100000>, @@ -1752,8 +1753,9 @@ pcie3b: pcie@1c08000 { <0x0 0x32000000 0x0 0xf1d>, <0x0 0x32000f20 0x0 0xa8>, <0x0 0x32001000 0x0 0x1000>, - <0x0 0x32100000 0x0 0x100000>; - reg-names = "parf", "dbi", "elbi", "atu", "config"; + <0x0 0x32100000 0x0 0x100000>, + <0x0 0x01c0b000 0x0 0x1000>; + reg-names = "parf", "dbi", "elbi", "atu", "config", "mhi"; #address-cells = <3>; #size-cells = <2>; ranges = <0x01000000 0x0 0x32200000 0x0 0x32200000 0x0 0x100000>, @@ -1849,8 +1851,9 @@ pcie3a: pcie@1c10000 { <0x0 0x34000000 0x0 0xf1d>, <0x0 0x34000f20 0x0 0xa8>, <0x0 0x34001000 0x0 0x1000>, - <0x0 0x34100000 0x0 0x100000>; - reg-names = "parf", "dbi", "elbi", "atu", "config"; + <0x0 0x34100000 0x0 0x100000>, + <0x0 0x01c13000 0x0 0x1000>; + reg-names = "parf", "dbi", "elbi", "atu", "config", "mhi"; #address-cells = <3>; #size-cells = <2>; ranges = <0x01000000 0x0 0x34200000 0x0 0x34200000 0x0 0x100000>, @@ -1949,8 +1952,9 @@ pcie2b: pcie@1c18000 { <0x0 0x38000000 0x0 0xf1d>, <0x0 0x38000f20 0x0 0xa8>, <0x0 0x38001000 0x0 0x1000>, - <0x0 0x38100000 0x0 0x100000>; - reg-names = "parf", "dbi", "elbi", "atu", "config"; + <0x0 0x38100000 0x0 0x100000>, + <0x0 0x01c1b000 0x0 0x1000>; + reg-names = "parf", "dbi", "elbi", "atu", "config", "mhi"; #address-cells = <3>; #size-cells = <2>; ranges = <0x01000000 0x0 0x38200000 0x0 0x38200000 0x0 0x100000>, @@ -2046,8 +2050,9 @@ pcie2a: pcie@1c20000 { <0x0 0x3c000000 0x0 0xf1d>, <0x0 0x3c000f20 0x0 0xa8>, <0x0 0x3c001000 0x0 0x1000>, - <0x0 0x3c100000 0x0 0x100000>; - reg-names = "parf", "dbi", "elbi", "atu", "config"; + <0x0 0x3c100000 0x0 0x100000>, + <0x0 0x01c23000 0x0 0x1000>; + reg-names = "parf", "dbi", "elbi", "atu", "config", "mhi"; #address-cells = <3>; #size-cells = <2>; ranges = <0x01000000 0x0 0x3c200000 0x0 0x3c200000 0x0 0x100000>, From patchwork Thu Mar 16 08:11:17 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Manivannan Sadhasivam X-Patchwork-Id: 1757778 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=2620:137:e000::1:20; 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Thu, 16 Mar 2023 01:12:57 -0700 (PDT) Received: from localhost.localdomain ([117.207.30.24]) by smtp.gmail.com with ESMTPSA id 13-20020aa7910d000000b005d9984a947bsm4804422pfh.139.2023.03.16.01.12.53 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 16 Mar 2023 01:12:57 -0700 (PDT) From: Manivannan Sadhasivam To: andersson@kernel.org, lpieralisi@kernel.org, kw@linux.com, krzysztof.kozlowski+dt@linaro.org, robh@kernel.org Cc: konrad.dybcio@linaro.org, linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, quic_srichara@quicinc.com, Manivannan Sadhasivam Subject: [PATCH v5 19/19] PCI: qcom: Expose link transition counts via debugfs Date: Thu, 16 Mar 2023 13:41:17 +0530 Message-Id: <20230316081117.14288-20-manivannan.sadhasivam@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230316081117.14288-1-manivannan.sadhasivam@linaro.org> References: <20230316081117.14288-1-manivannan.sadhasivam@linaro.org> MIME-Version: 1.0 X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_NONE, SPF_HELO_NONE,SPF_PASS autolearn=unavailable autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org Qualcomm PCIe controllers have debug registers in the MHI region that count PCIe link transitions. Expose them over debugfs to userspace to help debug the low power issues. Note that even though the registers are prefixed as PARF_, they don't live under the "parf" register region. The register naming is following the Qualcomm's internal documentation as like other registers. While at it, let's arrange the local variables in probe function to follow reverse XMAS tree order. Signed-off-by: Manivannan Sadhasivam --- drivers/pci/controller/dwc/pcie-qcom.c | 65 +++++++++++++++++++++++++- 1 file changed, 63 insertions(+), 2 deletions(-) diff --git a/drivers/pci/controller/dwc/pcie-qcom.c b/drivers/pci/controller/dwc/pcie-qcom.c index 7daff0421b86..f3e606b038c3 100644 --- a/drivers/pci/controller/dwc/pcie-qcom.c +++ b/drivers/pci/controller/dwc/pcie-qcom.c @@ -10,6 +10,7 @@ #include #include +#include #include #include #include @@ -62,6 +63,13 @@ #define AXI_MSTR_RESP_COMP_CTRL1 0x81c #define MISC_CONTROL_1_REG 0x8bc +/* MHI registers */ +#define PARF_DEBUG_CNT_PM_LINKST_IN_L2 0xc04 +#define PARF_DEBUG_CNT_PM_LINKST_IN_L1 0xc0c +#define PARF_DEBUG_CNT_PM_LINKST_IN_L0S 0xc10 +#define PARF_DEBUG_CNT_AUX_CLK_IN_L1SUB_L1 0xc84 +#define PARF_DEBUG_CNT_AUX_CLK_IN_L1SUB_L2 0xc88 + /* PARF_SYS_CTRL register fields */ #define MAC_PHY_POWERDOWN_IN_P2_D_MUX_EN BIT(29) #define MST_WAKEUP_EN BIT(13) @@ -229,11 +237,13 @@ struct qcom_pcie { struct dw_pcie *pci; void __iomem *parf; /* DT parf */ void __iomem *elbi; /* DT elbi */ + void __iomem *mhi; union qcom_pcie_resources res; struct phy *phy; struct gpio_desc *reset; struct icc_path *icc_mem; const struct qcom_pcie_cfg *cfg; + struct dentry *debugfs; }; #define to_qcom_pcie(x) dev_get_drvdata((x)->dev) @@ -1382,13 +1392,51 @@ static void qcom_pcie_icc_update(struct qcom_pcie *pcie) } } +static int qcom_pcie_link_transition_count(struct seq_file *s, void *data) +{ + struct qcom_pcie *pcie = (struct qcom_pcie *)dev_get_drvdata(s->private); + + seq_printf(s, "L0s transition count: %u\n", + readl_relaxed(pcie->mhi + PARF_DEBUG_CNT_PM_LINKST_IN_L0S)); + + seq_printf(s, "L1 transition count: %u\n", + readl_relaxed(pcie->mhi + PARF_DEBUG_CNT_PM_LINKST_IN_L1)); + + seq_printf(s, "L1.1 transition count: %u\n", + readl_relaxed(pcie->mhi + PARF_DEBUG_CNT_AUX_CLK_IN_L1SUB_L1)); + + seq_printf(s, "L1.2 transition count: %u\n", + readl_relaxed(pcie->mhi + PARF_DEBUG_CNT_AUX_CLK_IN_L1SUB_L2)); + + seq_printf(s, "L2 transition count: %u\n", + readl_relaxed(pcie->mhi + PARF_DEBUG_CNT_PM_LINKST_IN_L2)); + + return 0; +} + +static void qcom_pcie_init_debugfs(struct qcom_pcie *pcie) +{ + struct dw_pcie *pci = pcie->pci; + struct device *dev = pci->dev; + char *name; + + name = devm_kasprintf(dev, GFP_KERNEL, "%pOFP", dev->of_node); + if (!name) + return; + + pcie->debugfs = debugfs_create_dir(name, NULL); + debugfs_create_devm_seqfile(dev, "link_transition_count", pcie->debugfs, + qcom_pcie_link_transition_count); +} + static int qcom_pcie_probe(struct platform_device *pdev) { + const struct qcom_pcie_cfg *pcie_cfg; struct device *dev = &pdev->dev; + struct qcom_pcie *pcie; struct dw_pcie_rp *pp; + struct resource *res; struct dw_pcie *pci; - struct qcom_pcie *pcie; - const struct qcom_pcie_cfg *pcie_cfg; int ret; pcie_cfg = of_device_get_match_data(dev); @@ -1436,6 +1484,16 @@ static int qcom_pcie_probe(struct platform_device *pdev) goto err_pm_runtime_put; } + /* MHI region is optional */ + res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "mhi"); + if (res) { + pcie->mhi = devm_ioremap_resource(dev, res); + if (IS_ERR(pcie->mhi)) { + ret = PTR_ERR(pcie->mhi); + goto err_pm_runtime_put; + } + } + pcie->phy = devm_phy_optional_get(dev, "pciephy"); if (IS_ERR(pcie->phy)) { ret = PTR_ERR(pcie->phy); @@ -1466,6 +1524,9 @@ static int qcom_pcie_probe(struct platform_device *pdev) qcom_pcie_icc_update(pcie); + if (pcie->mhi) + qcom_pcie_init_debugfs(pcie); + return 0; err_phy_exit: