From patchwork Fri Oct 17 13:37:04 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hanjun Guo X-Patchwork-Id: 5097761 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork2.web.kernel.org (Postfix) with ESMTP id DD0EDC11AC for ; Fri, 17 Oct 2014 13:45:41 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id D10FE2015D for ; Fri, 17 Oct 2014 13:45:40 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id D9DC22015E for ; Fri, 17 Oct 2014 13:45:39 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1Xf7o6-0001aO-QX; Fri, 17 Oct 2014 13:43:02 +0000 Received: from mail-pa0-f54.google.com ([209.85.220.54]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1Xf7ko-0006XX-LB for linux-arm-kernel@lists.infradead.org; Fri, 17 Oct 2014 13:39:39 +0000 Received: by mail-pa0-f54.google.com with SMTP id ey11so829281pad.41 for ; Fri, 17 Oct 2014 06:39:17 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=VRJ4RzW+gCojPrDSw/2hAyYpRaYR2zLIvZFo0NEbIIs=; b=ZLsyD9tCpE3f7Jup6GYJ0QMemHSpQoJ9PI5BINa031wCQqfVTcvOwWIN0JThAzA/8n cYl5+3J207KMiu0yP8JMiHUx1a/uLQj7pxHXojQt0lsDN1cbxzFSj1cYSokToAQUVncU uZkitNDulANGHEGPsbquvDGXSIoL9gZz/LQJPR6CnqxIlF2d0Cn09Qys7xIllWGfuehP hYWSUoGbwPW62RqydKDMfU6TS7XkIw/SCOTll+u+yON1d4axReHnf+5Mg3XZu6gqFhrv w4QA/uOEueEWOWN2+G4mp/EJip2bD9XxOEbecGm00YiZpTr/Pd38o8xJcCwkYlyI5p5k YDZA== X-Gm-Message-State: ALoCoQn5JyzSbIf3AL1I/p+y6anI45bxmcxSDbojxQwNVs3BVKJBYLeTEy4WhVtLfsgXQFcziPHL X-Received: by 10.69.18.139 with SMTP id gm11mr8698055pbd.104.1413553157324; Fri, 17 Oct 2014 06:39:17 -0700 (PDT) Received: from localhost ([220.202.153.90]) by mx.google.com with ESMTPSA id rh5sm1662946pdb.4.2014.10.17.06.39.13 for (version=TLSv1.2 cipher=RC4-SHA bits=128/128); Fri, 17 Oct 2014 06:39:16 -0700 (PDT) From: Hanjun Guo To: Catalin Marinas , "Rafael J. Wysocki" , Mark Rutland , Olof Johansson , Grant Likely , Will Deacon Subject: [PATCH v5 08/18] ARM64 / ACPI: Make PCI optional for ACPI on ARM64 Date: Fri, 17 Oct 2014 21:37:04 +0800 Message-Id: <1413553034-20956-9-git-send-email-hanjun.guo@linaro.org> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1413553034-20956-1-git-send-email-hanjun.guo@linaro.org> References: <1413553034-20956-1-git-send-email-hanjun.guo@linaro.org> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20141017_063938_790279_BEA40BD9 X-CRM114-Status: GOOD ( 17.78 ) X-Spam-Score: -0.7 (/) Cc: linaro-acpi@lists.linaro.org, Liviu Dudau , Lv Zheng , Rob Herring , Lorenzo Pieralisi , Daniel Lezcano , Robert Moore , linux-acpi@vger.kernel.org, Charles.Garcia-Tobin@arm.com, Robert Richter , Jason Cooper , Arnd Bergmann , Marc Zyngier , Jon Masters , Mark Brown , Bjorn Helgaas , linux-arm-kernel@lists.infradead.org, Graeme Gregory , Kangkang.Shen@huawei.com, Randy Dunlap , linux-kernel@vger.kernel.org, Hanjun Guo , Sudeep Holla X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_NONE, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP As PCI for ARM64 is not ready, so introduce some stub functions to make PCI optional for ACPI, and make ACPI core run without CONFIG_PCI on ARM64. Since ACPI on X86 and IA64 depends on PCI and this patch only makes PCI optional for ARM64, it will not break anything on X86 and IA64. Signed-off-by: Hanjun Guo --- arch/arm64/include/asm/pci.h | 11 +++++++++++ drivers/acpi/Makefile | 2 +- drivers/acpi/internal.h | 5 +++++ include/linux/pci.h | 37 +++++++++++++++++++++++++++---------- 4 files changed, 44 insertions(+), 11 deletions(-) create mode 100644 arch/arm64/include/asm/pci.h diff --git a/arch/arm64/include/asm/pci.h b/arch/arm64/include/asm/pci.h new file mode 100644 index 0000000..250cd24 --- /dev/null +++ b/arch/arm64/include/asm/pci.h @@ -0,0 +1,11 @@ +#ifndef __ASM_PCI_H +#define __ASM_PCI_H +#ifdef __KERNEL__ + +/* + * PCI address space differs from physical memory address space + */ +#define PCI_DMA_BUS_IS_PHYS (0) + +#endif /* __KERNEL__ */ +#endif /* __ASM_PCI_H */ diff --git a/drivers/acpi/Makefile b/drivers/acpi/Makefile index 89837f8..6f3a74d 100644 --- a/drivers/acpi/Makefile +++ b/drivers/acpi/Makefile @@ -43,7 +43,7 @@ acpi-y += processor_core.o acpi-$(CONFIG_ARCH_MIGHT_HAVE_ACPI_PDC) += processor_pdc.o acpi-y += ec.o acpi-$(CONFIG_ACPI_DOCK) += dock.o -acpi-y += pci_root.o pci_link.o pci_irq.o +acpi-$(CONFIG_PCI) += pci_root.o pci_link.o pci_irq.o acpi-y += acpi_lpss.o acpi-y += acpi_platform.o acpi-y += acpi_pnp.o diff --git a/drivers/acpi/internal.h b/drivers/acpi/internal.h index 4c5cf77..e1e6487 100644 --- a/drivers/acpi/internal.h +++ b/drivers/acpi/internal.h @@ -26,8 +26,13 @@ acpi_status acpi_os_initialize1(void); int init_acpi_device_notify(void); int acpi_scan_init(void); +#ifdef CONFIG_PCI void acpi_pci_root_init(void); void acpi_pci_link_init(void); +#else +static inline void acpi_pci_root_init(void) {} +static inline void acpi_pci_link_init(void) {} +#endif void acpi_processor_init(void); void acpi_platform_init(void); void acpi_pnp_init(void); diff --git a/include/linux/pci.h b/include/linux/pci.h index 61978a4..50fa750 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -558,15 +558,6 @@ struct pci_ops { int (*write)(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 val); }; -/* - * ACPI needs to be able to access PCI config space before we've done a - * PCI bus scan and created pci_bus structures. - */ -int raw_pci_read(unsigned int domain, unsigned int bus, unsigned int devfn, - int reg, int len, u32 *val); -int raw_pci_write(unsigned int domain, unsigned int bus, unsigned int devfn, - int reg, int len, u32 val); - struct pci_bus_region { dma_addr_t start; dma_addr_t end; @@ -1293,6 +1284,16 @@ typedef int (*arch_set_vga_state_t)(struct pci_dev *pdev, bool decode, unsigned int command_bits, u32 flags); void pci_register_set_vga_state(arch_set_vga_state_t func); +/* + * ACPI needs to be able to access PCI config space before we've done a + * PCI bus scan and created pci_bus structures. + */ +int raw_pci_read(unsigned int domain, unsigned int bus, unsigned int devfn, + int reg, int len, u32 *val); +int raw_pci_write(unsigned int domain, unsigned int bus, unsigned int devfn, + int reg, int len, u32 val); +void pcibios_penalize_isa_irq(int irq, int active); + #else /* CONFIG_PCI is not enabled */ /* @@ -1394,6 +1395,23 @@ static inline struct pci_dev *pci_get_bus_and_slot(unsigned int bus, unsigned int devfn) { return NULL; } +static inline struct pci_bus *pci_find_bus(int domain, int busnr) +{ return NULL; } + +static inline int pci_bus_write_config_byte(struct pci_bus *bus, + unsigned int devfn, int where, u8 val) +{ return -ENOSYS; } + +static inline int raw_pci_read(unsigned int domain, unsigned int bus, + unsigned int devfn, int reg, int len, u32 *val) +{ return -ENOSYS; } + +static inline int raw_pci_write(unsigned int domain, unsigned int bus, + unsigned int devfn, int reg, int len, u32 val) +{ return -ENOSYS; } + +static inline void pcibios_penalize_isa_irq(int irq, int active) { } + static inline int pci_domain_nr(struct pci_bus *bus) { return 0; } static inline struct pci_dev *pci_dev_get(struct pci_dev *dev) { return NULL; } @@ -1607,7 +1625,6 @@ int pcibios_set_pcie_reset_state(struct pci_dev *dev, enum pcie_reset_state state); int pcibios_add_device(struct pci_dev *dev); void pcibios_release_device(struct pci_dev *dev); -void pcibios_penalize_isa_irq(int irq, int active); #ifdef CONFIG_HIBERNATE_CALLBACKS extern struct dev_pm_ops pcibios_pm_ops;