From mboxrd@z Thu Jan  1 00:00:00 1970
From: Naresh Bhat <naresh.bhat@linaro.org>
Subject: Re: [PATCH 05/19] ARM64 / ACPI: Make PCI optional for ACPI on ARM64
Date: Fri, 25 Jul 2014 03:27:21 +0530
Message-ID: <CAFoFrHZQ6zsM-jVpUzuFfL3_1i=HU6g+ogJY2Zoy7wx82E03RA@mail.gmail.com>
References: <1406206825-15590-1-git-send-email-hanjun.guo@linaro.org>
 <1406206825-15590-6-git-send-email-hanjun.guo@linaro.org>
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To: Hanjun Guo <hanjun.guo@linaro.org>
Cc: Mark Rutland <mark.rutland@arm.com>, Mark Brown <broonie@linaro.org>, Catalin Marinas <catalin.marinas@arm.com>, Will Deacon <will.deacon@arm.com>, Lv Zheng <lv.zheng@intel.com>, Lorenzo Pieralisi <Lorenzo.Pieralisi@arm.com>, Daniel Lezcano <daniel.lezcano@linaro.org>, Robert Moore <robert.moore@intel.com>, linux-acpi@vger.kernel.org, Grant Likely <grant.likely@linaro.org>, Charles Garcia-Tobin <Charles.Garcia-Tobin@arm.com>, Robert Richter <rric@kernel.org>, Jason Cooper <jason@lakedaemon.net>, Arnd Bergmann <arnd@arndb.de>, Marc Zyngier <marc.zyngier@arm.com>, Liviu Dudau <Liviu.Dudau@arm.com>, linaro-acpi-private@linaro.org, Bjorn Helgaas <bhelgaas@google.com>, linux-arm-kernel@lists.infradead.org, Graeme Gregory <graeme.gregory@linaro.org>, Randy Dunlap <rdunlap@infradead.org>, "Rafael J. Wysocki" <rjw@rjwysocki.net>, linux-kernel@vger.kernel.org, Sudeep Holla <Sudee>
List-Id: linux-acpi@vger.kernel.org

On 24 July 2014 18:30, Hanjun Guo <hanjun.guo@linaro.org> wrote:
>
> 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 optinal for ARM64, it will not break anything on X86 and IA64.


optional

>
>
> Signed-off-by: Hanjun Guo <hanjun.guo@linaro.org>
> ---
>  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 505d4d7..8e9bbe6 100644
> --- a/drivers/acpi/Makefile
> +++ b/drivers/acpi/Makefile
> @@ -39,7 +39,7 @@ 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 466bcd1..27d7354 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 -ENODEV; }
> +
> +static inline int raw_pci_read(unsigned int domain, unsigned int bus,
> +                       unsigned int devfn, int reg, int len, u32 *val)
> +{ return -EINVAL; }
> +
> +static inline int raw_pci_write(unsigned int domain, unsigned int bus,
> +                       unsigned int devfn, int reg, int len, u32 val)
> +{ return -EINVAL; }
> +
> +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; }
>
> @@ -1597,7 +1615,6 @@ 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;
> --
> 1.7.9.5
>

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	<1406206825-15590-6-git-send-email-hanjun.guo@linaro.org>
Date: Fri, 25 Jul 2014 03:27:21 +0530
Message-ID: <CAFoFrHZQ6zsM-jVpUzuFfL3_1i=HU6g+ogJY2Zoy7wx82E03RA@mail.gmail.com>
Subject: Re: [PATCH 05/19] ARM64 / ACPI: Make PCI optional for ACPI on ARM64
From: Naresh Bhat <naresh.bhat@linaro.org>
To: Hanjun Guo <hanjun.guo@linaro.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>,
        "Rafael J. Wysocki" <rjw@rjwysocki.net>,
        Mark Rutland <mark.rutland@arm.com>,
        Graeme Gregory <graeme.gregory@linaro.org>,
        Arnd Bergmann <arnd@arndb.de>, Grant Likely <grant.likely@linaro.org>,
        Sudeep Holla <Sudeep.Holla@arm.com>, Will Deacon <will.deacon@arm.com>,
        Jason Cooper <jason@lakedaemon.net>,
        Marc Zyngier <marc.zyngier@arm.com>,
        Bjorn Helgaas <bhelgaas@google.com>,
        Daniel Lezcano <daniel.lezcano@linaro.org>,
        Mark Brown <broonie@linaro.org>, Robert Richter <rric@kernel.org>,
        Lv Zheng <lv.zheng@intel.com>, Robert Moore <robert.moore@intel.com>,
        Lorenzo Pieralisi <Lorenzo.Pieralisi@arm.com>,
        Liviu Dudau <Liviu.Dudau@arm.com>,
        Randy Dunlap <rdunlap@infradead.org>,
        Charles Garcia-Tobin <Charles.Garcia-Tobin@arm.com>,
        linux-acpi@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
        linux-kernel@vger.kernel.org, linaro-acpi-private@linaro.org
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On 24 July 2014 18:30, Hanjun Guo <hanjun.guo@linaro.org> wrote:
>
> 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 optinal for ARM64, it will not break anything on X86 and IA64.


optional

>
>
> Signed-off-by: Hanjun Guo <hanjun.guo@linaro.org>
> ---
>  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 505d4d7..8e9bbe6 100644
> --- a/drivers/acpi/Makefile
> +++ b/drivers/acpi/Makefile
> @@ -39,7 +39,7 @@ 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 466bcd1..27d7354 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 -ENODEV; }
> +
> +static inline int raw_pci_read(unsigned int domain, unsigned int bus,
> +                       unsigned int devfn, int reg, int len, u32 *val)
> +{ return -EINVAL; }
> +
> +static inline int raw_pci_write(unsigned int domain, unsigned int bus,
> +                       unsigned int devfn, int reg, int len, u32 val)
> +{ return -EINVAL; }
> +
> +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; }
>
> @@ -1597,7 +1615,6 @@ 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;
> --
> 1.7.9.5
>

From mboxrd@z Thu Jan  1 00:00:00 1970
From: naresh.bhat@linaro.org (Naresh Bhat)
Date: Fri, 25 Jul 2014 03:27:21 +0530
Subject: [PATCH 05/19] ARM64 / ACPI: Make PCI optional for ACPI on ARM64
In-Reply-To: <1406206825-15590-6-git-send-email-hanjun.guo@linaro.org>
References: <1406206825-15590-1-git-send-email-hanjun.guo@linaro.org>
 <1406206825-15590-6-git-send-email-hanjun.guo@linaro.org>
Message-ID: <CAFoFrHZQ6zsM-jVpUzuFfL3_1i=HU6g+ogJY2Zoy7wx82E03RA@mail.gmail.com>
To: linux-arm-kernel@lists.infradead.org
List-Id: linux-arm-kernel.lists.infradead.org

On 24 July 2014 18:30, Hanjun Guo <hanjun.guo@linaro.org> wrote:
>
> 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 optinal for ARM64, it will not break anything on X86 and IA64.


optional

>
>
> Signed-off-by: Hanjun Guo <hanjun.guo@linaro.org>
> ---
>  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 505d4d7..8e9bbe6 100644
> --- a/drivers/acpi/Makefile
> +++ b/drivers/acpi/Makefile
> @@ -39,7 +39,7 @@ 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 466bcd1..27d7354 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 -ENODEV; }
> +
> +static inline int raw_pci_read(unsigned int domain, unsigned int bus,
> +                       unsigned int devfn, int reg, int len, u32 *val)
> +{ return -EINVAL; }
> +
> +static inline int raw_pci_write(unsigned int domain, unsigned int bus,
> +                       unsigned int devfn, int reg, int len, u32 val)
> +{ return -EINVAL; }
> +
> +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; }
>
> @@ -1597,7 +1615,6 @@ 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;
> --
> 1.7.9.5
>