include/asm-powerpc/pci.h - kernel/msm-4.9 - Gitiles

 #ifndef __ASM_POWERPC_PCI_H
 #define __ASM_POWERPC_PCI_H
 #ifdef __KERNEL__

 /*
  * 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.
  */

 #include <linux/types.h>
 #include <linux/slab.h>
 #include <linux/string.h>
 #include <linux/dma-mapping.h>

 #include <asm/machdep.h>
 #include <asm/scatterlist.h>
 #include <asm/io.h>
 #include <asm/prom.h>
 #include <asm/pci-bridge.h>

 #include <asm-generic/pci-dma-compat.h>

 #define PCIBIOS_MIN_IO		0x1000
 #define PCIBIOS_MIN_MEM		0x10000000

 struct pci_dev;

 /* Values for the `which' argument to sys_pciconfig_iobase syscall.  */
 #define IOBASE_BRIDGE_NUMBER	0
 #define IOBASE_MEMORY		1
 #define IOBASE_IO		2
 #define IOBASE_ISA_IO		3
 #define IOBASE_ISA_MEM		4

 /*
  * Set this to 1 if you want the kernel to re-assign all PCI
  * bus numbers
  */
 extern int pci_assign_all_buses;
 #define pcibios_assign_all_busses()	(pci_assign_all_buses)

 #define pcibios_scan_all_fns(a, b)	0

 static inline void pcibios_set_master(struct pci_dev *dev)
 {
 	/* No special bus mastering setup handling */
 }

 static inline void pcibios_penalize_isa_irq(int irq, int active)
 {
 	/* We don't do dynamic PCI IRQ allocation */
 }

 #define HAVE_ARCH_PCI_GET_LEGACY_IDE_IRQ
 static inline int pci_get_legacy_ide_irq(struct pci_dev *dev, int channel)
 {
 	if (ppc_md.pci_get_legacy_ide_irq)
 		return ppc_md.pci_get_legacy_ide_irq(dev, channel);
 	return channel ? 15 : 14;
 }

 #ifdef CONFIG_PPC64

 /*
  * We want to avoid touching the cacheline size or MWI bit.
  * pSeries firmware sets the cacheline size (which is not the cpu cacheline
  * size in all cases) and hardware treats MWI the same as memory write.
  */
 #define PCI_DISABLE_MWI

 #ifdef CONFIG_PCI
 extern void set_pci_dma_ops(struct dma_mapping_ops *dma_ops);
 extern struct dma_mapping_ops *get_pci_dma_ops(void);

 /* For DAC DMA, we currently don't support it by default, but
  * we let 64-bit platforms override this.
  */
 static inline int pci_dac_dma_supported(struct pci_dev *hwdev,u64 mask)
 {
 	struct dma_mapping_ops *d = get_pci_dma_ops();

 	if (d && d->dac_dma_supported)
 		return d->dac_dma_supported(&hwdev->dev, mask);
 	return 0;
 }

 static inline void pci_dma_burst_advice(struct pci_dev *pdev,
 					enum pci_dma_burst_strategy *strat,
 					unsigned long *strategy_parameter)
 {
 	unsigned long cacheline_size;
 	u8 byte;

 	pci_read_config_byte(pdev, PCI_CACHE_LINE_SIZE, &byte);
 	if (byte == 0)
 		cacheline_size = 1024;
 	else
 		cacheline_size = (int) byte * 4;

 	*strat = PCI_DMA_BURST_MULTIPLE;
 	*strategy_parameter = cacheline_size;
 }
 #else	/* CONFIG_PCI */
 #define set_pci_dma_ops(d)
 #define get_pci_dma_ops()	NULL
 #endif

 extern int pci_domain_nr(struct pci_bus *bus);

 /* Decide whether to display the domain number in /proc */
 extern int pci_proc_domain(struct pci_bus *bus);

 #else /* 32-bit */

 #ifdef CONFIG_PCI
 static inline void pci_dma_burst_advice(struct pci_dev *pdev,
 					enum pci_dma_burst_strategy *strat,
 					unsigned long *strategy_parameter)
 {
 	*strat = PCI_DMA_BURST_INFINITY;
 	*strategy_parameter = ~0UL;
 }
 #endif

 /*
  * At present there are very few 32-bit PPC machines that can have
  * memory above the 4GB point, and we don't support that.
  */
 #define pci_dac_dma_supported(pci_dev, mask)	(0)

 /* Return the index of the PCI controller for device PDEV. */
 #define pci_domain_nr(bus) ((struct pci_controller *)(bus)->sysdata)->index

 /* Set the name of the bus as it appears in /proc/bus/pci */
 static inline int pci_proc_domain(struct pci_bus *bus)
 {
 	return 0;
 }

 #endif /* CONFIG_PPC64 */

 struct vm_area_struct;
 /* Map a range of PCI memory or I/O space for a device into user space */
 int pci_mmap_page_range(struct pci_dev *pdev, struct vm_area_struct *vma,
 			enum pci_mmap_state mmap_state, int write_combine);

 /* Tell drivers/pci/proc.c that we have pci_mmap_page_range() */
 #define HAVE_PCI_MMAP	1

 #if defined(CONFIG_PPC64) || defined(CONFIG_NOT_COHERENT_CACHE)
 /*
  * For 64-bit kernels, pci_unmap_{single,page} is not a nop.
  * For 32-bit non-coherent kernels, pci_dma_sync_single_for_cpu() and
  * so on are not nops.
  * and thus...
  */
 #define DECLARE_PCI_UNMAP_ADDR(ADDR_NAME)	\
 	dma_addr_t ADDR_NAME;
 #define DECLARE_PCI_UNMAP_LEN(LEN_NAME)		\
 	__u32 LEN_NAME;
 #define pci_unmap_addr(PTR, ADDR_NAME)			\
 	((PTR)->ADDR_NAME)
 #define pci_unmap_addr_set(PTR, ADDR_NAME, VAL)		\
 	(((PTR)->ADDR_NAME) = (VAL))
 #define pci_unmap_len(PTR, LEN_NAME)			\
 	((PTR)->LEN_NAME)
 #define pci_unmap_len_set(PTR, LEN_NAME, VAL)		\
 	(((PTR)->LEN_NAME) = (VAL))

 #else /* 32-bit && coherent */

 /* pci_unmap_{page,single} is a nop so... */
 #define DECLARE_PCI_UNMAP_ADDR(ADDR_NAME)
 #define DECLARE_PCI_UNMAP_LEN(LEN_NAME)
 #define pci_unmap_addr(PTR, ADDR_NAME)		(0)
 #define pci_unmap_addr_set(PTR, ADDR_NAME, VAL)	do { } while (0)
 #define pci_unmap_len(PTR, LEN_NAME)		(0)
 #define pci_unmap_len_set(PTR, LEN_NAME, VAL)	do { } while (0)

 #endif /* CONFIG_PPC64 || CONFIG_NOT_COHERENT_CACHE */

 #ifdef CONFIG_PPC64

 /* The PCI address space does not equal the physical memory address
  * space (we have an IOMMU).  The IDE and SCSI device layers use
  * this boolean for bounce buffer decisions.
  */
 #define PCI_DMA_BUS_IS_PHYS	(0)

 #else /* 32-bit */

 /* The PCI address space does equal the physical memory
  * address space (no IOMMU).  The IDE and SCSI device layers use
  * this boolean for bounce buffer decisions.
  */
 #define PCI_DMA_BUS_IS_PHYS     (1)

 #endif /* CONFIG_PPC64 */

 extern void pcibios_resource_to_bus(struct pci_dev *dev,
 			struct pci_bus_region *region,
 			struct resource *res);

 extern void pcibios_bus_to_resource(struct pci_dev *dev,
 			struct resource *res,
 			struct pci_bus_region *region);

 static inline struct resource *pcibios_select_root(struct pci_dev *pdev,
 			struct resource *res)
 {
 	struct resource *root = NULL;

 	if (res->flags & IORESOURCE_IO)
 		root = &ioport_resource;
 	if (res->flags & IORESOURCE_MEM)
 		root = &iomem_resource;

 	return root;
 }

 extern int unmap_bus_range(struct pci_bus *bus);

 extern int remap_bus_range(struct pci_bus *bus);

 extern void pcibios_fixup_device_resources(struct pci_dev *dev,
 			struct pci_bus *bus);

 extern void pcibios_setup_new_device(struct pci_dev *dev);

 extern void pcibios_claim_one_bus(struct pci_bus *b);

 extern struct pci_controller *init_phb_dynamic(struct device_node *dn);

 extern struct pci_dev *of_create_pci_dev(struct device_node *node,
 					struct pci_bus *bus, int devfn);

 extern void of_scan_pci_bridge(struct device_node *node,
 				struct pci_dev *dev);

 extern void of_scan_bus(struct device_node *node, struct pci_bus *bus);

 extern int pci_read_irq_line(struct pci_dev *dev);

 extern void pcibios_add_platform_entries(struct pci_dev *dev);

 struct file;
 extern pgprot_t	pci_phys_mem_access_prot(struct file *file,
 					 unsigned long pfn,
 					 unsigned long size,
 					 pgprot_t prot);

 #define HAVE_ARCH_PCI_RESOURCE_TO_USER
 extern void pci_resource_to_user(const struct pci_dev *dev, int bar,
 				 const struct resource *rsrc,
 				 resource_size_t *start, resource_size_t *end);

 #endif	/* __KERNEL__ */
 #endif /* __ASM_POWERPC_PCI_H */
	#ifndef __ASM_POWERPC_PCI_H
	#define __ASM_POWERPC_PCI_H
	#ifdef __KERNEL__

	/*
	* 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.
	*/

	#include <linux/types.h>
	#include <linux/slab.h>
	#include <linux/string.h>
	#include <linux/dma-mapping.h>

	#include <asm/machdep.h>
	#include <asm/scatterlist.h>
	#include <asm/io.h>
	#include <asm/prom.h>
	#include <asm/pci-bridge.h>

	#include <asm-generic/pci-dma-compat.h>

	#define PCIBIOS_MIN_IO 0x1000
	#define PCIBIOS_MIN_MEM 0x10000000

	struct pci_dev;

	/* Values for the `which' argument to sys_pciconfig_iobase syscall. */
	#define IOBASE_BRIDGE_NUMBER 0
	#define IOBASE_MEMORY 1
	#define IOBASE_IO 2
	#define IOBASE_ISA_IO 3
	#define IOBASE_ISA_MEM 4

	/*
	* Set this to 1 if you want the kernel to re-assign all PCI
	* bus numbers
	*/
	extern int pci_assign_all_buses;
	#define pcibios_assign_all_busses() (pci_assign_all_buses)

	#define pcibios_scan_all_fns(a, b) 0

	static inline void pcibios_set_master(struct pci_dev *dev)
	{
	/* No special bus mastering setup handling */
	}

	static inline void pcibios_penalize_isa_irq(int irq, int active)
	{
	/* We don't do dynamic PCI IRQ allocation */
	}

	#define HAVE_ARCH_PCI_GET_LEGACY_IDE_IRQ
	static inline int pci_get_legacy_ide_irq(struct pci_dev *dev, int channel)
	{
	if (ppc_md.pci_get_legacy_ide_irq)
	return ppc_md.pci_get_legacy_ide_irq(dev, channel);
	return channel ? 15 : 14;
	}

	#ifdef CONFIG_PPC64

	/*
	* We want to avoid touching the cacheline size or MWI bit.
	* pSeries firmware sets the cacheline size (which is not the cpu cacheline
	* size in all cases) and hardware treats MWI the same as memory write.
	*/
	#define PCI_DISABLE_MWI

	#ifdef CONFIG_PCI
	extern void set_pci_dma_ops(struct dma_mapping_ops *dma_ops);
	extern struct dma_mapping_ops *get_pci_dma_ops(void);

	/* For DAC DMA, we currently don't support it by default, but
	* we let 64-bit platforms override this.
	*/
	static inline int pci_dac_dma_supported(struct pci_dev *hwdev,u64 mask)
	{
	struct dma_mapping_ops *d = get_pci_dma_ops();

	if (d && d->dac_dma_supported)
	return d->dac_dma_supported(&hwdev->dev, mask);
	return 0;
	}

	static inline void pci_dma_burst_advice(struct pci_dev *pdev,
	enum pci_dma_burst_strategy *strat,
	unsigned long *strategy_parameter)
	{
	unsigned long cacheline_size;
	u8 byte;

	pci_read_config_byte(pdev, PCI_CACHE_LINE_SIZE, &byte);
	if (byte == 0)
	cacheline_size = 1024;
	else
	cacheline_size = (int) byte * 4;

	*strat = PCI_DMA_BURST_MULTIPLE;
	*strategy_parameter = cacheline_size;
	}
	#else /* CONFIG_PCI */
	#define set_pci_dma_ops(d)
	#define get_pci_dma_ops() NULL
	#endif

	extern int pci_domain_nr(struct pci_bus *bus);

	/* Decide whether to display the domain number in /proc */
	extern int pci_proc_domain(struct pci_bus *bus);

	#else /* 32-bit */

	#ifdef CONFIG_PCI
	static inline void pci_dma_burst_advice(struct pci_dev *pdev,
	enum pci_dma_burst_strategy *strat,
	unsigned long *strategy_parameter)
	{
	*strat = PCI_DMA_BURST_INFINITY;
	*strategy_parameter = ~0UL;
	}
	#endif

	/*
	* At present there are very few 32-bit PPC machines that can have
	* memory above the 4GB point, and we don't support that.
	*/
	#define pci_dac_dma_supported(pci_dev, mask) (0)

	/* Return the index of the PCI controller for device PDEV. */
	#define pci_domain_nr(bus) ((struct pci_controller *)(bus)->sysdata)->index

	/* Set the name of the bus as it appears in /proc/bus/pci */
	static inline int pci_proc_domain(struct pci_bus *bus)
	{
	return 0;
	}

	#endif /* CONFIG_PPC64 */

	struct vm_area_struct;
	/* Map a range of PCI memory or I/O space for a device into user space */
	int pci_mmap_page_range(struct pci_dev pdev, struct vm_area_struct vma,
	enum pci_mmap_state mmap_state, int write_combine);

	/* Tell drivers/pci/proc.c that we have pci_mmap_page_range() */
	#define HAVE_PCI_MMAP 1

	#if defined(CONFIG_PPC64) \|\| defined(CONFIG_NOT_COHERENT_CACHE)
	/*
	* For 64-bit kernels, pci_unmap_{single,page} is not a nop.
	* For 32-bit non-coherent kernels, pci_dma_sync_single_for_cpu() and
	* so on are not nops.
	* and thus...
	*/
	#define DECLARE_PCI_UNMAP_ADDR(ADDR_NAME) \
	dma_addr_t ADDR_NAME;
	#define DECLARE_PCI_UNMAP_LEN(LEN_NAME) \
	__u32 LEN_NAME;
	#define pci_unmap_addr(PTR, ADDR_NAME) \
	((PTR)->ADDR_NAME)
	#define pci_unmap_addr_set(PTR, ADDR_NAME, VAL) \
	(((PTR)->ADDR_NAME) = (VAL))
	#define pci_unmap_len(PTR, LEN_NAME) \
	((PTR)->LEN_NAME)
	#define pci_unmap_len_set(PTR, LEN_NAME, VAL) \
	(((PTR)->LEN_NAME) = (VAL))

	#else /* 32-bit && coherent */

	/* pci_unmap_{page,single} is a nop so... */
	#define DECLARE_PCI_UNMAP_ADDR(ADDR_NAME)
	#define DECLARE_PCI_UNMAP_LEN(LEN_NAME)
	#define pci_unmap_addr(PTR, ADDR_NAME) (0)
	#define pci_unmap_addr_set(PTR, ADDR_NAME, VAL) do { } while (0)
	#define pci_unmap_len(PTR, LEN_NAME) (0)
	#define pci_unmap_len_set(PTR, LEN_NAME, VAL) do { } while (0)

	#endif /* CONFIG_PPC64 \|\| CONFIG_NOT_COHERENT_CACHE */

	#ifdef CONFIG_PPC64

	/* The PCI address space does not equal the physical memory address
	* space (we have an IOMMU). The IDE and SCSI device layers use
	* this boolean for bounce buffer decisions.
	*/
	#define PCI_DMA_BUS_IS_PHYS (0)

	#else /* 32-bit */

	/* The PCI address space does equal the physical memory
	* address space (no IOMMU). The IDE and SCSI device layers use
	* this boolean for bounce buffer decisions.
	*/
	#define PCI_DMA_BUS_IS_PHYS (1)

	#endif /* CONFIG_PPC64 */

	extern void pcibios_resource_to_bus(struct pci_dev *dev,
	struct pci_bus_region *region,
	struct resource *res);

	extern void pcibios_bus_to_resource(struct pci_dev *dev,
	struct resource *res,
	struct pci_bus_region *region);

	static inline struct resource pcibios_select_root(struct pci_dev pdev,
	struct resource *res)
	{
	struct resource *root = NULL;

	if (res->flags & IORESOURCE_IO)
	root = &ioport_resource;
	if (res->flags & IORESOURCE_MEM)
	root = &iomem_resource;

	return root;
	}

	extern int unmap_bus_range(struct pci_bus *bus);

	extern int remap_bus_range(struct pci_bus *bus);

	extern void pcibios_fixup_device_resources(struct pci_dev *dev,
	struct pci_bus *bus);

	extern void pcibios_setup_new_device(struct pci_dev *dev);

	extern void pcibios_claim_one_bus(struct pci_bus *b);

	extern struct pci_controller init_phb_dynamic(struct device_node dn);

	extern struct pci_dev of_create_pci_dev(struct device_node node,
	struct pci_bus *bus, int devfn);

	extern void of_scan_pci_bridge(struct device_node *node,
	struct pci_dev *dev);

	extern void of_scan_bus(struct device_node node, struct pci_bus bus);

	extern int pci_read_irq_line(struct pci_dev *dev);

	extern void pcibios_add_platform_entries(struct pci_dev *dev);

	struct file;
	extern pgprot_t pci_phys_mem_access_prot(struct file *file,
	unsigned long pfn,
	unsigned long size,
	pgprot_t prot);

	#define HAVE_ARCH_PCI_RESOURCE_TO_USER
	extern void pci_resource_to_user(const struct pci_dev *dev, int bar,
	const struct resource *rsrc,
	resource_size_t start, resource_size_t end);

	#endif /* __KERNEL__ */
	#endif /* __ASM_POWERPC_PCI_H */