From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-10.3 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, UNWANTED_LANGUAGE_BODY,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id C515EC433FC for ; Wed, 15 Jul 2020 14:36:02 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id A5066206F5 for ; Wed, 15 Jul 2020 14:36:02 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=broadcom.com header.i=@broadcom.com header.b="emEr8u1K" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728955AbgGOOfp (ORCPT ); Wed, 15 Jul 2020 10:35:45 -0400 Received: from rnd-relay.smtp.broadcom.com ([192.19.229.170]:45032 "EHLO rnd-relay.smtp.broadcom.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728893AbgGOOfn (ORCPT ); Wed, 15 Jul 2020 10:35:43 -0400 Received: from mail-irv-17.broadcom.com (mail-irv-17.lvn.broadcom.net [10.75.242.48]) by rnd-relay.smtp.broadcom.com (Postfix) with ESMTP id A32DC30C008; Wed, 15 Jul 2020 07:35:30 -0700 (PDT) DKIM-Filter: OpenDKIM Filter v2.10.3 rnd-relay.smtp.broadcom.com A32DC30C008 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=broadcom.com; s=dkimrelay; t=1594823730; bh=SCeymgfmidxWNTewp2CUtXHPgRiJmtVBtU2BuTPYLFs=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=emEr8u1K52SXrlXbGsqcWpphHMCI9k7JN/2gictqaURJKmET+FKQeeTfDRV3tT+M6 oQucEYfH6sMqGIqVu7oe7Kq/e5sSZZhXaBZqrdDWTH38uWXP2Zasj0eVlQlYxQjJn6 iA1IbXp7VdWup2GIN+Kjsm+JGhd2kaS69j7cMXFA= Received: from stbsrv-and-01.and.broadcom.net (stbsrv-and-01.and.broadcom.net [10.28.16.211]) by mail-irv-17.broadcom.com (Postfix) with ESMTP id 7B012140069; Wed, 15 Jul 2020 07:35:40 -0700 (PDT) From: Jim Quinlan To: linux-pci@vger.kernel.org, Nicolas Saenz Julienne , Christoph Hellwig , bcm-kernel-feedback-list@broadcom.com, james.quinlan@broadcom.com Cc: Jim Quinlan , Lorenzo Pieralisi , Rob Herring , Bjorn Helgaas , Florian Fainelli , linux-rpi-kernel@lists.infradead.org (moderated list:BROADCOM BCM2711/BCM2835 ARM ARCHITECTURE), linux-arm-kernel@lists.infradead.org (moderated list:BROADCOM BCM2711/BCM2835 ARM ARCHITECTURE), linux-kernel@vger.kernel.org (open list) Subject: [PATCH v8 04/12] PCI: brcmstb: Add bcm7278 register info Date: Wed, 15 Jul 2020 10:35:07 -0400 Message-Id: <20200715143530.9702-5-james.quinlan@broadcom.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200715143530.9702-1-james.quinlan@broadcom.com> References: <20200715143530.9702-1-james.quinlan@broadcom.com> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Jim Quinlan Add in compatibility strings and code for three Broadcom STB chips. Some of the register locations, shifts, and masks are different for certain chips, requiring the use of different constants based on of_id. We would like to add the following at this time to the match list but we need to wait until the end of this patchset so that everything works. { .compatible = "brcm,bcm7211-pcie", .data = &generic_cfg }, { .compatible = "brcm,bcm7278-pcie", .data = &bcm7278_cfg }, { .compatible = "brcm,bcm7216-pcie", .data = &bcm7278_cfg }, { .compatible = "brcm,bcm7445-pcie", .data = &generic_cfg }, Signed-off-by: Jim Quinlan Acked-by: Florian Fainelli --- drivers/pci/controller/pcie-brcmstb.c | 105 +++++++++++++++++++++++--- 1 file changed, 93 insertions(+), 12 deletions(-) diff --git a/drivers/pci/controller/pcie-brcmstb.c b/drivers/pci/controller/pcie-brcmstb.c index 7730ea845ff2..b7a222fde3c4 100644 --- a/drivers/pci/controller/pcie-brcmstb.c +++ b/drivers/pci/controller/pcie-brcmstb.c @@ -122,9 +122,8 @@ #define PCIE_EXT_SLOT_SHIFT 15 #define PCIE_EXT_FUNC_SHIFT 12 -#define PCIE_RGR1_SW_INIT_1 0x9210 #define PCIE_RGR1_SW_INIT_1_PERST_MASK 0x1 -#define PCIE_RGR1_SW_INIT_1_INIT_MASK 0x2 +#define PCIE_RGR1_SW_INIT_1_PERST_SHIFT 0x0 /* PCIe parameters */ #define BRCM_NUM_PCIE_OUT_WINS 0x4 @@ -154,6 +153,73 @@ #define SSC_STATUS_SSC_MASK 0x400 #define SSC_STATUS_PLL_LOCK_MASK 0x800 +#define IDX_ADDR(pcie) (pcie->reg_offsets[EXT_CFG_INDEX]) +#define DATA_ADDR(pcie) (pcie->reg_offsets[EXT_CFG_DATA]) +#define PCIE_RGR1_SW_INIT_1(pcie) (pcie->reg_offsets[RGR1_SW_INIT_1]) + +enum { + RGR1_SW_INIT_1, + EXT_CFG_INDEX, + EXT_CFG_DATA, +}; + +enum { + RGR1_SW_INIT_1_INIT_MASK, + RGR1_SW_INIT_1_INIT_SHIFT, +}; + +enum pcie_type { + GENERIC, + BCM7278, + BCM2711, +}; + +struct pcie_cfg_data { + const int *reg_field_info; + const int *offsets; + const enum pcie_type type; +}; + +static const int pcie_reg_field_info[] = { + [RGR1_SW_INIT_1_INIT_MASK] = 0x2, + [RGR1_SW_INIT_1_INIT_SHIFT] = 0x1, +}; + +static const int pcie_reg_field_info_bcm7278[] = { + [RGR1_SW_INIT_1_INIT_MASK] = 0x1, + [RGR1_SW_INIT_1_INIT_SHIFT] = 0x0, +}; + +static const int pcie_offsets[] = { + [RGR1_SW_INIT_1] = 0x9210, + [EXT_CFG_INDEX] = 0x9000, + [EXT_CFG_DATA] = 0x9004, +}; + +static const struct pcie_cfg_data generic_cfg = { + .reg_field_info = pcie_reg_field_info, + .offsets = pcie_offsets, + .type = GENERIC, +}; + +static const int pcie_offset_bcm7278[] = { + [RGR1_SW_INIT_1] = 0xc010, + [EXT_CFG_INDEX] = 0x9000, + [EXT_CFG_DATA] = 0x9004, +}; + +static const struct pcie_cfg_data bcm7278_cfg = { + .reg_field_info = pcie_reg_field_info_bcm7278, + .offsets = pcie_offset_bcm7278, + .type = BCM7278, +}; + +static const struct pcie_cfg_data bcm2711_cfg = { + .reg_field_info = pcie_reg_field_info, + .offsets = pcie_offsets, + .type = BCM2711, +}; + struct brcm_msi { struct device *dev; void __iomem *base; @@ -178,6 +244,9 @@ struct brcm_pcie { int gen; u64 msi_target_addr; struct brcm_msi *msi; + const int *reg_offsets; + const int *reg_field_info; + enum pcie_type type; }; /* @@ -604,20 +673,21 @@ static struct pci_ops brcm_pcie_ops = { static inline void brcm_pcie_bridge_sw_init_set(struct brcm_pcie *pcie, u32 val) { - u32 tmp; + u32 tmp, mask = pcie->reg_field_info[RGR1_SW_INIT_1_INIT_MASK]; + u32 shift = pcie->reg_field_info[RGR1_SW_INIT_1_INIT_SHIFT]; - tmp = readl(pcie->base + PCIE_RGR1_SW_INIT_1); - u32p_replace_bits(&tmp, val, PCIE_RGR1_SW_INIT_1_INIT_MASK); - writel(tmp, pcie->base + PCIE_RGR1_SW_INIT_1); + tmp = readl(pcie->base + PCIE_RGR1_SW_INIT_1(pcie)); + tmp = (tmp & ~mask) | ((val << shift) & mask); + writel(tmp, pcie->base + PCIE_RGR1_SW_INIT_1(pcie)); } static inline void brcm_pcie_perst_set(struct brcm_pcie *pcie, u32 val) { u32 tmp; - tmp = readl(pcie->base + PCIE_RGR1_SW_INIT_1); + tmp = readl(pcie->base + PCIE_RGR1_SW_INIT_1(pcie)); u32p_replace_bits(&tmp, val, PCIE_RGR1_SW_INIT_1_PERST_MASK); - writel(tmp, pcie->base + PCIE_RGR1_SW_INIT_1); + writel(tmp, pcie->base + PCIE_RGR1_SW_INIT_1(pcie)); } static inline int brcm_pcie_get_rc_bar2_size_and_offset(struct brcm_pcie *pcie, @@ -927,11 +997,17 @@ static int brcm_pcie_remove(struct platform_device *pdev) return 0; } +static const struct of_device_id brcm_pcie_match[] = { + { .compatible = "brcm,bcm2711-pcie", .data = &bcm2711_cfg }, + {}, +}; + static int brcm_pcie_probe(struct platform_device *pdev) { struct device_node *np = pdev->dev.of_node, *msi_np; struct pci_host_bridge *bridge; struct device_node *fw_np; + const struct pcie_cfg_data *data; struct brcm_pcie *pcie; struct pci_bus *child; struct resource *res; @@ -955,9 +1031,18 @@ static int brcm_pcie_probe(struct platform_device *pdev) if (!bridge) return -ENOMEM; + data = of_device_get_match_data(&pdev->dev); + if (!data) { + pr_err("failed to look up compatible string\n"); + return -EINVAL; + } + pcie = pci_host_bridge_priv(bridge); pcie->dev = &pdev->dev; pcie->np = np; + pcie->reg_offsets = data->offsets; + pcie->reg_field_info = data->reg_field_info; + pcie->type = data->type; res = platform_get_resource(pdev, IORESOURCE_MEM, 0); pcie->base = devm_ioremap_resource(&pdev->dev, res); @@ -1023,10 +1108,6 @@ static int brcm_pcie_probe(struct platform_device *pdev) return ret; } -static const struct of_device_id brcm_pcie_match[] = { - { .compatible = "brcm,bcm2711-pcie" }, - {}, -}; MODULE_DEVICE_TABLE(of, brcm_pcie_match); static struct platform_driver brcm_pcie_driver = { -- 2.17.1