From patchwork Fri May 8 11:34:01 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jiaxun Yang X-Patchwork-Id: 200890 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=-9.6 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,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 66C84C47247 for ; Fri, 8 May 2020 11:34:43 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 3E8672145D for ; Fri, 8 May 2020 11:34:43 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=flygoat.com header.i=@flygoat.com header.b="DWQuGz/Y" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726750AbgEHLej (ORCPT ); Fri, 8 May 2020 07:34:39 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48818 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1726616AbgEHLej (ORCPT ); Fri, 8 May 2020 07:34:39 -0400 Received: from vultr.net.flygoat.com (vultr.net.flygoat.com [IPv6:2001:19f0:6001:3633:5400:2ff:fe8c:553]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 683B3C05BD43; Fri, 8 May 2020 04:34:39 -0700 (PDT) Received: from localhost.localdomain (unknown [142.147.94.151]) by vultr.net.flygoat.com (Postfix) with ESMTPSA id 88D6E20CE6; Fri, 8 May 2020 11:34:34 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=flygoat.com; s=vultr; t=1588937677; bh=BsYKKDVjGrGZ45XtSJs9R6ZJaKv6eacQRLmTdmKpjC0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=DWQuGz/YAvGylUx5HdviGbZu227tAzJ0dwIx0KqVuCtVXt9R5hnYj5aZeaAhp+jCt iwfE8fwRFXNFLVA2AuibSjrc9J0irQtmOqupkrdM4uIn2Tl9IsdvchqGxgwBp7+u5x ZLM79gfSVwPRmFUUY1ykmt1dnaoTiQxV+QgESx1Peyzlbn/XlSqE6LX0H9aAbOVHkb PT5OvW6RXDy3lBFMFhh6LqHNu599YiJAp4kbUHOsfzoC4zJwaKKxGR8EqKwjDugqdB vcvfJREmD95uHSG3SVtswsWHsrPssb98oS8NEVlzrmxZI3ffLRpiDZGoJyDW2PUhQM tfx9ljlyzjssA== From: Jiaxun Yang To: maz@kernel.org Cc: Jiaxun Yang , Bjorn Helgaas , Rob Herring , Thomas Bogendoerfer , Huacai Chen , Lorenzo Pieralisi , Paul Burton , linux-pci@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mips@vger.kernel.org Subject: [PATCH v8 1/5] PCI: Don't disable decoding when mmio_always_on is set Date: Fri, 8 May 2020 19:34:01 +0800 Message-Id: <20200508113414.3091532-1-jiaxun.yang@flygoat.com> X-Mailer: git-send-email 2.26.0.rc2 In-Reply-To: <20200427060551.1372591-1-jiaxun.yang@flygoat.com> References: <20200427060551.1372591-1-jiaxun.yang@flygoat.com> MIME-Version: 1.0 Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org Don't disable MEM/IO decoding when a device have both non_compliant_bars and mmio_always_on. That would allow us quirk devices with junk in BARs but can't disable their decoding. Signed-off-by: Jiaxun Yang --- drivers/pci/probe.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c index 77b8a145c39b..d9c2c3301a8a 100644 --- a/drivers/pci/probe.c +++ b/drivers/pci/probe.c @@ -1822,7 +1822,7 @@ int pci_setup_device(struct pci_dev *dev) /* Device class may be changed after fixup */ class = dev->class >> 8; - if (dev->non_compliant_bars) { + if (dev->non_compliant_bars && !dev->mmio_always_on) { pci_read_config_word(dev, PCI_COMMAND, &cmd); if (cmd & (PCI_COMMAND_IO | PCI_COMMAND_MEMORY)) { pci_info(dev, "device has non-compliant BARs; disabling IO/MEM decoding\n"); From patchwork Fri May 8 11:34:03 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jiaxun Yang X-Patchwork-Id: 200889 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=-9.6 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=ham 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 D9AEDC38A2A for ; Fri, 8 May 2020 11:35:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B7BD620870 for ; Fri, 8 May 2020 11:35:01 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=flygoat.com header.i=@flygoat.com header.b="OIZo+nfC" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727029AbgEHLfB (ORCPT ); Fri, 8 May 2020 07:35:01 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48880 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1726690AbgEHLfA (ORCPT ); Fri, 8 May 2020 07:35:00 -0400 Received: from vultr.net.flygoat.com (vultr.net.flygoat.com [IPv6:2001:19f0:6001:3633:5400:2ff:fe8c:553]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 992DAC05BD43; Fri, 8 May 2020 04:35:00 -0700 (PDT) Received: from localhost.localdomain (unknown [142.147.94.151]) by vultr.net.flygoat.com (Postfix) with ESMTPSA id CC75920CE8; Fri, 8 May 2020 11:34:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=flygoat.com; s=vultr; t=1588937700; bh=vwdAevZE7nFNqqKFNytPSJJ+rhVHR7kKUZDeM13xDDY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=OIZo+nfC1/j7xIKbHo6jWByl0K0H6zSKbyG03cTu0KevFCHnXPP+AwEO7ZMaBPJ+q uu4LzvdCbG9fwkbhKIP3GzHufi1iL6CtbaFkSrSAQVmN79xLfX2ZH1pisfqKo6L3NF z5ypuTc/TQtgpyzDMpVcEn/4mPci2U9m7woo6qWwgxed/4Z7JR3t1gaR3LrxMDU7vN T8kyqn3MKTgB3hoWZrPbKymErrqvaqMhMk8WbzyloQ9Z+mTk9kqu/+Es0OhkFIRXoU DLh6+T2qgUKChEmR0/BHU9T8UjgnC/NYsdGl1mK+LuZmHrNPdImszfmKY/LVdpreYX svfy74HUxiGaw== From: Jiaxun Yang To: maz@kernel.org Cc: Jiaxun Yang , Rob Herring , Bjorn Helgaas , Rob Herring , Thomas Bogendoerfer , Huacai Chen , Lorenzo Pieralisi , Paul Burton , linux-pci@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mips@vger.kernel.org Subject: [PATCH v8 3/5] dt-bindings: Document Loongson PCI Host Controller Date: Fri, 8 May 2020 19:34:03 +0800 Message-Id: <20200508113414.3091532-3-jiaxun.yang@flygoat.com> X-Mailer: git-send-email 2.26.0.rc2 In-Reply-To: <20200508113414.3091532-1-jiaxun.yang@flygoat.com> References: <20200427060551.1372591-1-jiaxun.yang@flygoat.com> <20200508113414.3091532-1-jiaxun.yang@flygoat.com> MIME-Version: 1.0 Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org PCI host controller found on Loongson PCHs and SoCs. Signed-off-by: Jiaxun Yang Reviewed-by: Rob Herring --- .../devicetree/bindings/pci/loongson.yaml | 62 +++++++++++++++++++ 1 file changed, 62 insertions(+) create mode 100644 Documentation/devicetree/bindings/pci/loongson.yaml diff --git a/Documentation/devicetree/bindings/pci/loongson.yaml b/Documentation/devicetree/bindings/pci/loongson.yaml new file mode 100644 index 000000000000..30e7cf1aeb87 --- /dev/null +++ b/Documentation/devicetree/bindings/pci/loongson.yaml @@ -0,0 +1,62 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/pci/loongson.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Loongson PCI Host Controller + +maintainers: + - Jiaxun Yang + +description: |+ + PCI host controller found on Loongson PCHs and SoCs. + +allOf: + - $ref: /schemas/pci/pci-bus.yaml# + +properties: + compatible: + oneOf: + - const: loongson,ls2k-pci + - const: loongson,ls7a-pci + - const: loongson,rs780e-pci + + reg: + minItems: 1 + maxItems: 2 + items: + - description: CFG0 standard config space register + - description: CFG1 extended config space register + + ranges: + minItems: 1 + maxItems: 3 + + +required: + - compatible + - reg + - ranges + +examples: + - | + + bus { + #address-cells = <2>; + #size-cells = <2>; + pcie@1a000000 { + compatible = "loongson,rs780e-pci"; + device_type = "pci"; + #address-cells = <3>; + #size-cells = <2>; + + // CPU_PHYSICAL(2) SIZE(2) + reg = <0x0 0x1a000000 0x0 0x2000000>; + + // BUS_ADDRESS(3) CPU_PHYSICAL(2) SIZE(2) + ranges = <0x01000000 0x0 0x00004000 0x0 0x00004000 0x0 0x00004000>, + <0x02000000 0x0 0x40000000 0x0 0x40000000 0x0 0x40000000>; + }; + }; +... From patchwork Fri May 8 11:34:05 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jiaxun Yang X-Patchwork-Id: 200888 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=-9.6 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,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 415F6C38A2A for ; Fri, 8 May 2020 11:35:28 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 1941921582 for ; Fri, 8 May 2020 11:35:27 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=flygoat.com header.i=@flygoat.com header.b="DgvdMkbP" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726946AbgEHLfY (ORCPT ); Fri, 8 May 2020 07:35:24 -0400 Received: from vultr.net.flygoat.com ([149.28.68.211]:33128 "EHLO vultr.net.flygoat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726690AbgEHLfY (ORCPT ); Fri, 8 May 2020 07:35:24 -0400 Received: from localhost.localdomain (unknown [142.147.94.151]) by vultr.net.flygoat.com (Postfix) with ESMTPSA id 12B2D20CE7; Fri, 8 May 2020 11:35:20 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=flygoat.com; s=vultr; t=1588937723; bh=SGBfa2eJmecsiBLSL68kPrqdaswa5FzCvQdpVidpcYg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=DgvdMkbPjNBzVXDGfQfEpl/Aq0/EGKEZrBYz44+1UdidIJYbd/9cCFxJkU9V9FsGp M0Pd8lNW8ConcvqXt2Y1wH+n4Ob6f01Q9q2cmAyMJrlugEh264rqIGvbD6g95qGXNe GWXNwHXxKl4Epv1PDaY9EtR/J/LIl/nMUInbhk/lbM8p8LBDMTOL/bMCNKQbfTyIyl aqOXCmmIOQIc0WqA4Niokdj/C6fkmmY3Rplh/DadyxrveZgVTpS4gsYn6W2dQl9rcM +bE2oOtDTvq8uFNKPDkt8btrH8I9dXFyXBviff/KV0pJO3dIZWLdX1ZSnQJQjMENxG UBFGuDo4WSebA== From: Jiaxun Yang To: maz@kernel.org Cc: Jiaxun Yang , Bjorn Helgaas , Rob Herring , Thomas Bogendoerfer , Huacai Chen , Lorenzo Pieralisi , Paul Burton , linux-pci@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mips@vger.kernel.org Subject: [PATCH v8 5/5] MIPS: Loongson64: Switch to generic PCI driver Date: Fri, 8 May 2020 19:34:05 +0800 Message-Id: <20200508113414.3091532-5-jiaxun.yang@flygoat.com> X-Mailer: git-send-email 2.26.0.rc2 In-Reply-To: <20200508113414.3091532-1-jiaxun.yang@flygoat.com> References: <20200427060551.1372591-1-jiaxun.yang@flygoat.com> <20200508113414.3091532-1-jiaxun.yang@flygoat.com> MIME-Version: 1.0 Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org We can now enable generic PCI driver in Kconfig, and remove legacy PCI driver code. Radeon vbios quirk is moved to the platform folder to fit the new structure. Signed-off-by: Jiaxun Yang --- arch/mips/Kconfig | 1 + arch/mips/loongson64/Makefile | 2 +- arch/mips/loongson64/vbios_quirk.c | 29 ++++++++ arch/mips/pci/Makefile | 1 - arch/mips/pci/fixup-loongson3.c | 71 ------------------ arch/mips/pci/ops-loongson3.c | 116 ----------------------------- 6 files changed, 31 insertions(+), 189 deletions(-) create mode 100644 arch/mips/loongson64/vbios_quirk.c delete mode 100644 arch/mips/pci/fixup-loongson3.c delete mode 100644 arch/mips/pci/ops-loongson3.c diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig index 0519ca9f00f9..7a4fcc4ade1f 100644 --- a/arch/mips/Kconfig +++ b/arch/mips/Kconfig @@ -480,6 +480,7 @@ config MACH_LOONGSON64 select IRQ_MIPS_CPU select NR_CPUS_DEFAULT_64 select USE_GENERIC_EARLY_PRINTK_8250 + select PCI_DRIVERS_GENERIC select SYS_HAS_CPU_LOONGSON64 select SYS_HAS_EARLY_PRINTK select SYS_SUPPORTS_SMP diff --git a/arch/mips/loongson64/Makefile b/arch/mips/loongson64/Makefile index 6f3c2b47f66f..6f81b822aeae 100644 --- a/arch/mips/loongson64/Makefile +++ b/arch/mips/loongson64/Makefile @@ -8,5 +8,5 @@ obj-$(CONFIG_MACH_LOONGSON64) += cop2-ex.o platform.o dma.o \ obj-$(CONFIG_SMP) += smp.o obj-$(CONFIG_NUMA) += numa.o obj-$(CONFIG_RS780_HPET) += hpet.o -obj-$(CONFIG_PCI) += pci.o obj-$(CONFIG_SUSPEND) += pm.o +obj-$(CONFIG_PCI_QUIRKS) += vbios_quirk.o diff --git a/arch/mips/loongson64/vbios_quirk.c b/arch/mips/loongson64/vbios_quirk.c new file mode 100644 index 000000000000..1f0a462aeddd --- /dev/null +++ b/arch/mips/loongson64/vbios_quirk.c @@ -0,0 +1,29 @@ +// SPDX-License-Identifier: GPL-2.0 + +#include +#include + +static void pci_fixup_radeon(struct pci_dev *pdev) +{ + struct resource *res = &pdev->resource[PCI_ROM_RESOURCE]; + + if (res->start) + return; + + if (!loongson_sysconf.vgabios_addr) + return; + + pci_disable_rom(pdev); + if (res->parent) + release_resource(res); + + res->start = virt_to_phys((void *) loongson_sysconf.vgabios_addr); + res->end = res->start + 256*1024 - 1; + res->flags = IORESOURCE_MEM | IORESOURCE_ROM_SHADOW | + IORESOURCE_PCI_FIXED; + + dev_info(&pdev->dev, "BAR %d: assigned %pR for Radeon ROM\n", + PCI_ROM_RESOURCE, res); +} +DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_ATI, 0x9615, + PCI_CLASS_DISPLAY_VGA, 8, pci_fixup_radeon); diff --git a/arch/mips/pci/Makefile b/arch/mips/pci/Makefile index 342ce10ef593..438f10955d89 100644 --- a/arch/mips/pci/Makefile +++ b/arch/mips/pci/Makefile @@ -35,7 +35,6 @@ obj-$(CONFIG_LASAT) += pci-lasat.o obj-$(CONFIG_MIPS_COBALT) += fixup-cobalt.o obj-$(CONFIG_LEMOTE_FULOONG2E) += fixup-fuloong2e.o ops-loongson2.o obj-$(CONFIG_LEMOTE_MACH2F) += fixup-lemote2f.o ops-loongson2.o -obj-$(CONFIG_MACH_LOONGSON64) += fixup-loongson3.o ops-loongson3.o obj-$(CONFIG_MIPS_MALTA) += fixup-malta.o pci-malta.o obj-$(CONFIG_PMC_MSP7120_GW) += fixup-pmcmsp.o ops-pmcmsp.o obj-$(CONFIG_PMC_MSP7120_EVAL) += fixup-pmcmsp.o ops-pmcmsp.o diff --git a/arch/mips/pci/fixup-loongson3.c b/arch/mips/pci/fixup-loongson3.c deleted file mode 100644 index 8a741c2c6685..000000000000 --- a/arch/mips/pci/fixup-loongson3.c +++ /dev/null @@ -1,71 +0,0 @@ -/* - * fixup-loongson3.c - * - * Copyright (C) 2012 Lemote, Inc. - * Author: Xiang Yu, xiangy@lemote.com - * Chen Huacai, chenhc@lemote.com - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the - * Free Software Foundation; either version 2 of the License, or (at your - * option) any later version. - * - * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED - * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF - * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN - * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, - * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT - * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF - * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON - * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF - * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * - */ - -#include -#include - -static void print_fixup_info(const struct pci_dev *pdev) -{ - dev_info(&pdev->dev, "Device %x:%x, irq %d\n", - pdev->vendor, pdev->device, pdev->irq); -} - -int pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin) -{ - print_fixup_info(dev); - return dev->irq; -} - -static void pci_fixup_radeon(struct pci_dev *pdev) -{ - struct resource *res = &pdev->resource[PCI_ROM_RESOURCE]; - - if (res->start) - return; - - if (!loongson_sysconf.vgabios_addr) - return; - - pci_disable_rom(pdev); - if (res->parent) - release_resource(res); - - res->start = virt_to_phys((void *) loongson_sysconf.vgabios_addr); - res->end = res->start + 256*1024 - 1; - res->flags = IORESOURCE_MEM | IORESOURCE_ROM_SHADOW | - IORESOURCE_PCI_FIXED; - - dev_info(&pdev->dev, "BAR %d: assigned %pR for Radeon ROM\n", - PCI_ROM_RESOURCE, res); -} - -DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_ATI, PCI_ANY_ID, - PCI_CLASS_DISPLAY_VGA, 8, pci_fixup_radeon); - -/* Do platform specific device initialization at pci_enable_device() time */ -int pcibios_plat_dev_init(struct pci_dev *dev) -{ - return 0; -} diff --git a/arch/mips/pci/ops-loongson3.c b/arch/mips/pci/ops-loongson3.c deleted file mode 100644 index 2f6ad36bdea6..000000000000 --- a/arch/mips/pci/ops-loongson3.c +++ /dev/null @@ -1,116 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -#include -#include -#include - -#include - -#include - -#define PCI_ACCESS_READ 0 -#define PCI_ACCESS_WRITE 1 - -#define HT1LO_PCICFG_BASE 0x1a000000 -#define HT1LO_PCICFG_BASE_TP1 0x1b000000 - -static int loongson3_pci_config_access(unsigned char access_type, - struct pci_bus *bus, unsigned int devfn, - int where, u32 *data) -{ - unsigned char busnum = bus->number; - int function = PCI_FUNC(devfn); - int device = PCI_SLOT(devfn); - int reg = where & ~3; - void *addrp; - u64 addr; - - if (where < PCI_CFG_SPACE_SIZE) { /* standard config */ - addr = (busnum << 16) | (device << 11) | (function << 8) | reg; - if (busnum == 0) { - if (device > 31) - return PCIBIOS_DEVICE_NOT_FOUND; - addrp = (void *)TO_UNCAC(HT1LO_PCICFG_BASE | addr); - } else { - addrp = (void *)TO_UNCAC(HT1LO_PCICFG_BASE_TP1 | addr); - } - } else if (where < PCI_CFG_SPACE_EXP_SIZE) { /* extended config */ - struct pci_dev *rootdev; - - rootdev = pci_get_domain_bus_and_slot(0, 0, 0); - if (!rootdev) - return PCIBIOS_DEVICE_NOT_FOUND; - - addr = pci_resource_start(rootdev, 3); - if (!addr) - return PCIBIOS_DEVICE_NOT_FOUND; - - addr |= busnum << 20 | device << 15 | function << 12 | reg; - addrp = (void *)TO_UNCAC(addr); - } else { - return PCIBIOS_DEVICE_NOT_FOUND; - } - - if (access_type == PCI_ACCESS_WRITE) - writel(*data, addrp); - else { - *data = readl(addrp); - if (*data == 0xffffffff) { - *data = -1; - return PCIBIOS_DEVICE_NOT_FOUND; - } - } - return PCIBIOS_SUCCESSFUL; -} - -static int loongson3_pci_pcibios_read(struct pci_bus *bus, unsigned int devfn, - int where, int size, u32 *val) -{ - u32 data = 0; - int ret = loongson3_pci_config_access(PCI_ACCESS_READ, - bus, devfn, where, &data); - - if (ret != PCIBIOS_SUCCESSFUL) - return ret; - - if (size == 1) - *val = (data >> ((where & 3) << 3)) & 0xff; - else if (size == 2) - *val = (data >> ((where & 3) << 3)) & 0xffff; - else - *val = data; - - return PCIBIOS_SUCCESSFUL; -} - -static int loongson3_pci_pcibios_write(struct pci_bus *bus, unsigned int devfn, - int where, int size, u32 val) -{ - u32 data = 0; - int ret; - - if (size == 4) - data = val; - else { - ret = loongson3_pci_config_access(PCI_ACCESS_READ, - bus, devfn, where, &data); - if (ret != PCIBIOS_SUCCESSFUL) - return ret; - - if (size == 1) - data = (data & ~(0xff << ((where & 3) << 3))) | - (val << ((where & 3) << 3)); - else if (size == 2) - data = (data & ~(0xffff << ((where & 3) << 3))) | - (val << ((where & 3) << 3)); - } - - ret = loongson3_pci_config_access(PCI_ACCESS_WRITE, - bus, devfn, where, &data); - - return ret; -} - -struct pci_ops loongson_pci_ops = { - .read = loongson3_pci_pcibios_read, - .write = loongson3_pci_pcibios_write -};