From patchwork Fri Jan 10 19:14:59 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vidya Sagar X-Patchwork-Id: 1221384 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (no SPF record) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=linux-pci-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=pass (p=none dis=none) header.from=nvidia.com Authentication-Results: ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=nvidia.com header.i=@nvidia.com header.a=rsa-sha256 header.s=n1 header.b=gf35ja2k; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 47vXkJ2PJMz9sPJ for ; Sat, 11 Jan 2020 06:15:20 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728167AbgAJTPQ (ORCPT ); Fri, 10 Jan 2020 14:15:16 -0500 Received: from hqnvemgate26.nvidia.com ([216.228.121.65]:1668 "EHLO hqnvemgate26.nvidia.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727612AbgAJTPQ (ORCPT ); Fri, 10 Jan 2020 14:15:16 -0500 Received: from hqpgpgate101.nvidia.com (Not Verified[216.228.121.13]) by hqnvemgate26.nvidia.com (using TLS: TLSv1.2, DES-CBC3-SHA) id ; Fri, 10 Jan 2020 11:14:57 -0800 Received: from hqmail.nvidia.com ([172.20.161.6]) by hqpgpgate101.nvidia.com (PGP Universal service); Fri, 10 Jan 2020 11:15:15 -0800 X-PGP-Universal: processed; by hqpgpgate101.nvidia.com on Fri, 10 Jan 2020 11:15:15 -0800 Received: from HQMAIL109.nvidia.com (172.20.187.15) by HQMAIL101.nvidia.com (172.20.187.10) with Microsoft SMTP Server (TLS) id 15.0.1473.3; Fri, 10 Jan 2020 19:15:15 +0000 Received: from HQMAIL107.nvidia.com (172.20.187.13) by HQMAIL109.nvidia.com (172.20.187.15) with Microsoft SMTP Server (TLS) id 15.0.1473.3; Fri, 10 Jan 2020 19:15:14 +0000 Received: from rnnvemgw01.nvidia.com (10.128.109.123) by HQMAIL107.nvidia.com (172.20.187.13) with Microsoft SMTP Server (TLS) id 15.0.1473.3 via Frontend Transport; Fri, 10 Jan 2020 19:15:14 +0000 Received: from vidyas-desktop.nvidia.com (Not Verified[10.24.37.48]) by rnnvemgw01.nvidia.com with Trustwave SEG (v7, 5, 8, 10121) id ; Fri, 10 Jan 2020 11:15:14 -0800 From: Vidya Sagar To: , , , , , , CC: , , , , , , , Subject: [PATCH V3 1/2] arm64: tegra: Re-order PCIe aperture mappings to support ACPI boot Date: Sat, 11 Jan 2020 00:44:59 +0530 Message-ID: <20200110191500.9538-2-vidyas@nvidia.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200110191500.9538-1-vidyas@nvidia.com> References: <20200106082709.14370-1-vidyas@nvidia.com> <20200110191500.9538-1-vidyas@nvidia.com> X-NVConfidentiality: public MIME-Version: 1.0 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nvidia.com; s=n1; t=1578683697; bh=A9295dTyR+j2yr8EqSviqtTgED4nGyVgvOv0oWR2ueU=; h=X-PGP-Universal:From:To:CC:Subject:Date:Message-ID:X-Mailer: In-Reply-To:References:X-NVConfidentiality:MIME-Version: Content-Type; b=gf35ja2k7JnAqX+jyF1OxPVsYL5Fk4U+zYrMvTudBnjv0lLjB+7vnkXuO5FnSX28a o2Mvk9yks+a7NYLZkVfmKCXKbeDNoGPlPSy+g8CAyeAd5u7leSGONsy5awV83vmud7 /KuuExw/Ko4JihAJdQ57/4EaaohgPWUNbodkmI5Wo0e7qyfgf5PvkAkwe1PdtgEKls t9tsBwoqjGJn5WWPiQMaUZ8OHdSvPrUDuyKEFPjjr9IpczNvMzJE8SyHDZci42N+s+ f0iCjfLLhugetglYqrGi5j8eknYwfvMIV+vnkZj0dSmiS70Y1G31dVfgR/s3ueHnRy jBNjNRTUtey9w== Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org Re-order Tegra194's PCIe aperture mappings to have IO window moved to 64-bit aperture and have the entire 32-bit aperture used for accessing the configuration space. This makes it to use the entire 32MB of the 32-bit aperture for ECAM purpose while booting through ACPI. Signed-off-by: Vidya Sagar --- V3: * New change in this series arch/arm64/boot/dts/nvidia/tegra194.dtsi | 36 ++++++++++++------------ 1 file changed, 18 insertions(+), 18 deletions(-) diff --git a/arch/arm64/boot/dts/nvidia/tegra194.dtsi b/arch/arm64/boot/dts/nvidia/tegra194.dtsi index ccac43be12ac..5d790ec5bdef 100644 --- a/arch/arm64/boot/dts/nvidia/tegra194.dtsi +++ b/arch/arm64/boot/dts/nvidia/tegra194.dtsi @@ -1247,9 +1247,9 @@ nvidia,aspm-l0s-entrance-latency-us = <3>; bus-range = <0x0 0xff>; - ranges = <0x81000000 0x0 0x30100000 0x0 0x30100000 0x0 0x00100000 /* downstream I/O (1MB) */ - 0xc2000000 0x12 0x00000000 0x12 0x00000000 0x0 0x30000000 /* prefetchable memory (768MB) */ - 0x82000000 0x0 0x40000000 0x12 0x30000000 0x0 0x10000000>; /* non-prefetchable memory (256MB) */ + ranges = <0xc2000000 0x12 0x00000000 0x12 0x00000000 0x0 0x30000000 /* prefetchable memory (768MB) */ + 0x82000000 0x00 0x40000000 0x12 0x30000000 0x0 0x0fff0000 /* non-prefetchable memory (256MB - 64KB) */ + 0x81000000 0x00 0x00000000 0x12 0x3fff0000 0x0 0x00010000>; /* downstream I/O (64KB) */ }; pcie@14120000 { @@ -1292,9 +1292,9 @@ nvidia,aspm-l0s-entrance-latency-us = <3>; bus-range = <0x0 0xff>; - ranges = <0x81000000 0x0 0x32100000 0x0 0x32100000 0x0 0x00100000 /* downstream I/O (1MB) */ - 0xc2000000 0x12 0x40000000 0x12 0x40000000 0x0 0x30000000 /* prefetchable memory (768MB) */ - 0x82000000 0x0 0x40000000 0x12 0x70000000 0x0 0x10000000>; /* non-prefetchable memory (256MB) */ + ranges = <0xc2000000 0x12 0x40000000 0x12 0x40000000 0x0 0x30000000 /* prefetchable memory (768MB) */ + 0x82000000 0x00 0x40000000 0x12 0x70000000 0x0 0x0fff0000 /* non-prefetchable memory (256MB - 64KB) */ + 0x81000000 0x00 0x00000000 0x12 0x7fff0000 0x0 0x00010000>; /* downstream I/O (64KB) */ }; pcie@14140000 { @@ -1337,9 +1337,9 @@ nvidia,aspm-l0s-entrance-latency-us = <3>; bus-range = <0x0 0xff>; - ranges = <0x81000000 0x0 0x34100000 0x0 0x34100000 0x0 0x00100000 /* downstream I/O (1MB) */ - 0xc2000000 0x12 0x80000000 0x12 0x80000000 0x0 0x30000000 /* prefetchable memory (768MB) */ - 0x82000000 0x0 0x40000000 0x12 0xb0000000 0x0 0x10000000>; /* non-prefetchable memory (256MB) */ + ranges = <0xc2000000 0x12 0x80000000 0x12 0x80000000 0x0 0x30000000 /* prefetchable memory (768MB) */ + 0x82000000 0x00 0x40000000 0x12 0xb0000000 0x0 0x0fff0000 /* non-prefetchable memory (256MB - 64KB) */ + 0x81000000 0x00 0x00000000 0x12 0xbfff0000 0x0 0x00010000>; /* downstream I/O (64KB) */ }; pcie@14160000 { @@ -1382,9 +1382,9 @@ nvidia,aspm-l0s-entrance-latency-us = <3>; bus-range = <0x0 0xff>; - ranges = <0x81000000 0x0 0x36100000 0x0 0x36100000 0x0 0x00100000 /* downstream I/O (1MB) */ - 0xc2000000 0x14 0x00000000 0x14 0x00000000 0x3 0x40000000 /* prefetchable memory (13GB) */ - 0x82000000 0x0 0x40000000 0x17 0x40000000 0x0 0xc0000000>; /* non-prefetchable memory (3GB) */ + ranges = <0xc2000000 0x14 0x00000000 0x14 0x00000000 0x3 0x40000000 /* prefetchable memory (13GB) */ + 0x82000000 0x00 0x40000000 0x17 0x40000000 0x0 0xbfff0000 /* non-prefetchable memory (3GB - 64KB) */ + 0x81000000 0x00 0x00000000 0x17 0xffff0000 0x0 0x00010000>; /* downstream I/O (64KB) */ }; pcie@14180000 { @@ -1427,9 +1427,9 @@ nvidia,aspm-l0s-entrance-latency-us = <3>; bus-range = <0x0 0xff>; - ranges = <0x81000000 0x0 0x38100000 0x0 0x38100000 0x0 0x00100000 /* downstream I/O (1MB) */ - 0xc2000000 0x18 0x00000000 0x18 0x00000000 0x3 0x40000000 /* prefetchable memory (13GB) */ - 0x82000000 0x0 0x40000000 0x1b 0x40000000 0x0 0xc0000000>; /* non-prefetchable memory (3GB) */ + ranges = <0xc2000000 0x18 0x00000000 0x18 0x00000000 0x3 0x40000000 /* prefetchable memory (13GB) */ + 0x82000000 0x00 0x40000000 0x1b 0x40000000 0x0 0xbfff0000 /* non-prefetchable memory (3GB - 64KB) */ + 0x81000000 0x00 0x00000000 0x1b 0xffff0000 0x0 0x00010000>; /* downstream I/O (64KB) */ }; pcie@141a0000 { @@ -1476,9 +1476,9 @@ nvidia,aspm-l0s-entrance-latency-us = <3>; bus-range = <0x0 0xff>; - ranges = <0x81000000 0x0 0x3a100000 0x0 0x3a100000 0x0 0x00100000 /* downstream I/O (1MB) */ - 0xc2000000 0x1c 0x00000000 0x1c 0x00000000 0x3 0x40000000 /* prefetchable memory (13GB) */ - 0x82000000 0x0 0x40000000 0x1f 0x40000000 0x0 0xc0000000>; /* non-prefetchable memory (3GB) */ + ranges = <0xc2000000 0x1c 0x00000000 0x1c 0x00000000 0x3 0x40000000 /* prefetchable memory (13GB) */ + 0x82000000 0x00 0x40000000 0x1f 0x40000000 0x0 0xbfff0000 /* non-prefetchable memory (3GB - 64KB) */ + 0x81000000 0x00 0x00000000 0x1f 0xffff0000 0x0 0x00010000>; /* downstream I/O (64KB) */ }; pcie_ep@14160000 { From patchwork Fri Jan 10 19:15:00 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vidya Sagar X-Patchwork-Id: 1221385 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (no SPF record) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=linux-pci-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=pass (p=none dis=none) header.from=nvidia.com Authentication-Results: ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=nvidia.com header.i=@nvidia.com header.a=rsa-sha256 header.s=n1 header.b=KDh6KAfT; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 47vXkS04dtz9sR0 for ; Sat, 11 Jan 2020 06:15:28 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728451AbgAJTPX (ORCPT ); Fri, 10 Jan 2020 14:15:23 -0500 Received: from hqnvemgate24.nvidia.com ([216.228.121.143]:9177 "EHLO hqnvemgate24.nvidia.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727612AbgAJTPX (ORCPT ); Fri, 10 Jan 2020 14:15:23 -0500 Received: from hqpgpgate101.nvidia.com (Not Verified[216.228.121.13]) by hqnvemgate24.nvidia.com (using TLS: TLSv1.2, DES-CBC3-SHA) id ; Fri, 10 Jan 2020 11:14:30 -0800 Received: from hqmail.nvidia.com ([172.20.161.6]) by hqpgpgate101.nvidia.com (PGP Universal service); Fri, 10 Jan 2020 11:15:21 -0800 X-PGP-Universal: processed; by hqpgpgate101.nvidia.com on Fri, 10 Jan 2020 11:15:21 -0800 Received: from HQMAIL109.nvidia.com (172.20.187.15) by HQMAIL111.nvidia.com (172.20.187.18) with Microsoft SMTP Server (TLS) id 15.0.1473.3; Fri, 10 Jan 2020 19:15:21 +0000 Received: from HQMAIL109.nvidia.com (172.20.187.15) by HQMAIL109.nvidia.com (172.20.187.15) with Microsoft SMTP Server (TLS) id 15.0.1473.3; Fri, 10 Jan 2020 19:15:21 +0000 Received: from rnnvemgw01.nvidia.com (10.128.109.123) by HQMAIL109.nvidia.com (172.20.187.15) with Microsoft SMTP Server (TLS) id 15.0.1473.3 via Frontend Transport; Fri, 10 Jan 2020 19:15:20 +0000 Received: from vidyas-desktop.nvidia.com (Not Verified[10.24.37.48]) by rnnvemgw01.nvidia.com with Trustwave SEG (v7, 5, 8, 10121) id ; Fri, 10 Jan 2020 11:15:20 -0800 From: Vidya Sagar To: , , , , , , CC: , , , , , , , Subject: [PATCH V3 2/2] PCI: Add MCFG quirks for Tegra194 host controllers Date: Sat, 11 Jan 2020 00:45:00 +0530 Message-ID: <20200110191500.9538-3-vidyas@nvidia.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200110191500.9538-1-vidyas@nvidia.com> References: <20200106082709.14370-1-vidyas@nvidia.com> <20200110191500.9538-1-vidyas@nvidia.com> X-NVConfidentiality: public MIME-Version: 1.0 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nvidia.com; s=n1; t=1578683671; bh=6wJT/II+S2upRtJe41MS3kcnFzRRB57EIPkoU3txnnc=; h=X-PGP-Universal:From:To:CC:Subject:Date:Message-ID:X-Mailer: In-Reply-To:References:X-NVConfidentiality:MIME-Version: Content-Type; b=KDh6KAfT+xBJE0n0yRibTvav8qocX0wdxtjjCMNH+VNrt1Gvwgt8htMQvTCpi08Hz OLS6piubtsXb2Fk+J0rDcwmB2QM0YMKe6eA3DQkuJTPhl6PRxtvXdAYPfl/Z2pvG38 dq6SIor6Yw4e76ncsvt69w6UXoLZHF7AywICq0jGnmPjWoKDnjID3qKSj5/u7tE+/L 6hJUZ2QQebXRI17dRdfleyir+rRCS0wMl9tVNiAHplY3Wlxw895LJqvmVRZDVA+kg5 8DPKJY2JbazS6P4QcywESwuhDfejJGaJUz+1/6oSiHBMCI5OhfhFZ/lyTf0iZycdTQ gnZUMkPu2QZOg== Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org The PCIe controller in Tegra194 SoC is not completely ECAM-compliant. With the current hardware design limitations in place, ECAM can be enabled only for one controller (C5 controller to be precise) with bus numbers starting from 160 instead of 0. A different approach is taken to avoid this abnormal way of enabling ECAM for just one controller but to enable configuration space access for all the other controllers. In this approach, ops are added through MCFG quirk mechanism which access the configuration spaces by dynamically programming iATU (internal AddressTranslation Unit) to generate respective configuration accesses just like the way it is done in DesignWare core sub-system. Signed-off-by: Vidya Sagar Reported-by: kbuild test robot Acked-by: Thierry Reding --- V3: * Removed MCFG address hardcoding in pci_mcfg.c file * Started using 'dbi_base' for accessing root port's own config space * and using 'config_base' for accessing config space of downstream hierarchy V2: * Fixed build issues reported by kbuild test bot drivers/acpi/pci_mcfg.c | 7 ++ drivers/pci/controller/dwc/Kconfig | 3 +- drivers/pci/controller/dwc/Makefile | 2 +- drivers/pci/controller/dwc/pcie-tegra194.c | 102 +++++++++++++++++++++ include/linux/pci-ecam.h | 1 + 5 files changed, 113 insertions(+), 2 deletions(-) diff --git a/drivers/acpi/pci_mcfg.c b/drivers/acpi/pci_mcfg.c index 6b347d9920cc..707181408173 100644 --- a/drivers/acpi/pci_mcfg.c +++ b/drivers/acpi/pci_mcfg.c @@ -116,6 +116,13 @@ static struct mcfg_fixup mcfg_quirks[] = { THUNDER_ECAM_QUIRK(2, 12), THUNDER_ECAM_QUIRK(2, 13), + { "NVIDIA", "TEGRA194", 1, 0, MCFG_BUS_ANY, &tegra194_pcie_ops}, + { "NVIDIA", "TEGRA194", 1, 1, MCFG_BUS_ANY, &tegra194_pcie_ops}, + { "NVIDIA", "TEGRA194", 1, 2, MCFG_BUS_ANY, &tegra194_pcie_ops}, + { "NVIDIA", "TEGRA194", 1, 3, MCFG_BUS_ANY, &tegra194_pcie_ops}, + { "NVIDIA", "TEGRA194", 1, 4, MCFG_BUS_ANY, &tegra194_pcie_ops}, + { "NVIDIA", "TEGRA194", 1, 5, MCFG_BUS_ANY, &tegra194_pcie_ops}, + #define XGENE_V1_ECAM_MCFG(rev, seg) \ {"APM ", "XGENE ", rev, seg, MCFG_BUS_ANY, \ &xgene_v1_pcie_ecam_ops } diff --git a/drivers/pci/controller/dwc/Kconfig b/drivers/pci/controller/dwc/Kconfig index 0830dfcfa43a..f5b9e75aceed 100644 --- a/drivers/pci/controller/dwc/Kconfig +++ b/drivers/pci/controller/dwc/Kconfig @@ -255,7 +255,8 @@ config PCIE_TEGRA194 select PHY_TEGRA194_P2U help Say Y here if you want support for DesignWare core based PCIe host - controller found in NVIDIA Tegra194 SoC. + controller found in NVIDIA Tegra194 SoC. ACPI platforms with Tegra194 + don't need to enable this. config PCIE_UNIPHIER bool "Socionext UniPhier PCIe controllers" diff --git a/drivers/pci/controller/dwc/Makefile b/drivers/pci/controller/dwc/Makefile index 8a637cfcf6e9..76a6c52b8500 100644 --- a/drivers/pci/controller/dwc/Makefile +++ b/drivers/pci/controller/dwc/Makefile @@ -17,7 +17,6 @@ obj-$(CONFIG_PCIE_INTEL_GW) += pcie-intel-gw.o obj-$(CONFIG_PCIE_KIRIN) += pcie-kirin.o obj-$(CONFIG_PCIE_HISI_STB) += pcie-histb.o obj-$(CONFIG_PCI_MESON) += pci-meson.o -obj-$(CONFIG_PCIE_TEGRA194) += pcie-tegra194.o obj-$(CONFIG_PCIE_UNIPHIER) += pcie-uniphier.o # The following drivers are for devices that use the generic ACPI @@ -33,4 +32,5 @@ obj-$(CONFIG_PCIE_UNIPHIER) += pcie-uniphier.o ifdef CONFIG_PCI obj-$(CONFIG_ARM64) += pcie-al.o obj-$(CONFIG_ARM64) += pcie-hisi.o +obj-$(CONFIG_ARM64) += pcie-tegra194.o endif diff --git a/drivers/pci/controller/dwc/pcie-tegra194.c b/drivers/pci/controller/dwc/pcie-tegra194.c index cbe95f0ea0ca..660f55caa8be 100644 --- a/drivers/pci/controller/dwc/pcie-tegra194.c +++ b/drivers/pci/controller/dwc/pcie-tegra194.c @@ -21,6 +21,8 @@ #include #include #include +#include +#include #include #include #include @@ -285,6 +287,103 @@ struct tegra_pcie_dw { struct dentry *debugfs; }; +#if defined(CONFIG_ACPI) && defined(CONFIG_PCI_QUIRKS) +struct tegra194_pcie_acpi { + void __iomem *config_base; + void __iomem *iatu_base; + void __iomem *dbi_base; +}; + +static int tegra194_acpi_init(struct pci_config_window *cfg) +{ + struct device *dev = cfg->parent; + struct tegra194_pcie_acpi *pcie; + + pcie = devm_kzalloc(dev, sizeof(*pcie), GFP_KERNEL); + if (!pcie) + return -ENOMEM; + + pcie->config_base = cfg->win; + pcie->iatu_base = cfg->win + SZ_256K; + pcie->dbi_base = cfg->win + SZ_512K; + cfg->priv = pcie; + + return 0; +} + +static inline void atu_reg_write(struct tegra194_pcie_acpi *pcie, int index, + u32 val, u32 reg) +{ + u32 offset = PCIE_GET_ATU_OUTB_UNR_REG_OFFSET(index); + + writel(val, pcie->iatu_base + offset + reg); +} + +static void program_outbound_atu(struct tegra194_pcie_acpi *pcie, int index, + int type, u64 cpu_addr, u64 pci_addr, u64 size) +{ + atu_reg_write(pcie, index, lower_32_bits(cpu_addr), + PCIE_ATU_LOWER_BASE); + atu_reg_write(pcie, index, upper_32_bits(cpu_addr), + PCIE_ATU_UPPER_BASE); + atu_reg_write(pcie, index, lower_32_bits(pci_addr), + PCIE_ATU_LOWER_TARGET); + atu_reg_write(pcie, index, lower_32_bits(cpu_addr + size - 1), + PCIE_ATU_LIMIT); + atu_reg_write(pcie, index, upper_32_bits(pci_addr), + PCIE_ATU_UPPER_TARGET); + atu_reg_write(pcie, index, type, PCIE_ATU_CR1); + atu_reg_write(pcie, index, PCIE_ATU_ENABLE, PCIE_ATU_CR2); +} + +static void __iomem *tegra194_map_bus(struct pci_bus *bus, + unsigned int devfn, int where) +{ + struct pci_config_window *cfg = bus->sysdata; + struct tegra194_pcie_acpi *pcie = cfg->priv; + u32 busdev; + int type; + + if (bus->number < cfg->busr.start || bus->number > cfg->busr.end) + return NULL; + + if (bus->number == cfg->busr.start) { + if (PCI_SLOT(devfn) == 0) + return pcie->dbi_base + where; + else + return NULL; + } + + busdev = PCIE_ATU_BUS(bus->number) | PCIE_ATU_DEV(PCI_SLOT(devfn)) | + PCIE_ATU_FUNC(PCI_FUNC(devfn)); + + if (bus->parent->number == cfg->busr.start) { + if (PCI_SLOT(devfn) == 0) + type = PCIE_ATU_TYPE_CFG0; + else + return NULL; + } else { + type = PCIE_ATU_TYPE_CFG1; + } + + program_outbound_atu(pcie, PCIE_ATU_REGION_INDEX0, type, + cfg->res.start, busdev, SZ_256K); + return (void __iomem *)(pcie->config_base + where); +} + +struct pci_ecam_ops tegra194_pcie_ops = { + .bus_shift = 20, + .init = tegra194_acpi_init, + .pci_ops = { + .map_bus = tegra194_map_bus, + .read = pci_generic_config_read, + .write = pci_generic_config_write, + } +}; +#endif /* defined(CONFIG_ACPI) && defined(CONFIG_PCI_QUIRKS) */ + +#ifdef CONFIG_PCIE_TEGRA194 + static inline struct tegra_pcie_dw *to_tegra_pcie(struct dw_pcie *pci) { return container_of(pci, struct tegra_pcie_dw, pci); @@ -1728,3 +1827,6 @@ MODULE_DEVICE_TABLE(of, tegra_pcie_dw_of_match); MODULE_AUTHOR("Vidya Sagar "); MODULE_DESCRIPTION("NVIDIA PCIe host controller driver"); MODULE_LICENSE("GPL v2"); + +#endif /* CONFIG_PCIE_TEGRA194 */ + diff --git a/include/linux/pci-ecam.h b/include/linux/pci-ecam.h index a73164c85e78..6156140dcbb6 100644 --- a/include/linux/pci-ecam.h +++ b/include/linux/pci-ecam.h @@ -57,6 +57,7 @@ extern struct pci_ecam_ops pci_thunder_ecam_ops; /* Cavium ThunderX 1.x */ extern struct pci_ecam_ops xgene_v1_pcie_ecam_ops; /* APM X-Gene PCIe v1 */ extern struct pci_ecam_ops xgene_v2_pcie_ecam_ops; /* APM X-Gene PCIe v2.x */ extern struct pci_ecam_ops al_pcie_ops; /* Amazon Annapurna Labs PCIe */ +extern struct pci_ecam_ops tegra194_pcie_ops; /* Tegra194 PCIe */ #endif #ifdef CONFIG_PCI_HOST_COMMON