[linux-2.6-block.git] / arch / ia64 / include / asm / pci.h

#ifndef _ASM_IA64_PCI_H
#define _ASM_IA64_PCI_H

#include <linux/mm.h>
#include <linux/slab.h>
#include <linux/spinlock.h>
#include <linux/string.h>
#include <linux/types.h>

#include <asm/io.h>
#include <asm/scatterlist.h>
#include <asm/hw_irq.h>

/*
 * Can be used to override the logic in pci_scan_bus for skipping already-configured bus
 * numbers - to be used for buggy BIOSes or architectures with incomplete PCI setup by the
 * loader.
 */
#define pcibios_assign_all_busses()     0
#define pcibios_scan_all_fns(a, b)	0

#define PCIBIOS_MIN_IO		0x1000
#define PCIBIOS_MIN_MEM		0x10000000

void pcibios_config_init(void);

struct pci_dev;

/*
 * PCI_DMA_BUS_IS_PHYS should be set to 1 if there is _necessarily_ a direct
 * correspondence between device bus addresses and CPU physical addresses.
 * Platforms with a hardware I/O MMU _must_ turn this off to suppress the
 * bounce buffer handling code in the block and network device layers.
 * Platforms with separate bus address spaces _must_ turn this off and provide
 * a device DMA mapping implementation that takes care of the necessary
 * address translation.
 *
 * For now, the ia64 platforms which may have separate/multiple bus address
 * spaces all have I/O MMUs which support the merging of physically
 * discontiguous buffers, so we can use that as the sole factor to determine
 * the setting of PCI_DMA_BUS_IS_PHYS.
 */
extern unsigned long ia64_max_iommu_merge_mask;
#define PCI_DMA_BUS_IS_PHYS	(ia64_max_iommu_merge_mask == ~0UL)

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 */
}

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

/* pci_unmap_{single,page} is not a nop, 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))

#ifdef CONFIG_PCI
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;
}
#endif

#define HAVE_PCI_MMAP
extern int pci_mmap_page_range (struct pci_dev *dev, struct vm_area_struct *vma,
				enum pci_mmap_state mmap_state, int write_combine);
#define HAVE_PCI_LEGACY
extern int pci_mmap_legacy_page_range(struct pci_bus *bus,
				      struct vm_area_struct *vma,
				      enum pci_mmap_state mmap_state);

#define pci_get_legacy_mem platform_pci_get_legacy_mem
#define pci_legacy_read platform_pci_legacy_read
#define pci_legacy_write platform_pci_legacy_write

struct pci_window {
	struct resource resource;
	u64 offset;
};

struct pci_controller {
	void *acpi_handle;
	void *iommu;
	int segment;
	int node;		/* nearest node with memory or -1 for global allocation */

	unsigned int windows;
	struct pci_window *window;

	void *platform_data;
};

#define PCI_CONTROLLER(busdev) ((struct pci_controller *) busdev->sysdata)
#define pci_domain_nr(busdev)    (PCI_CONTROLLER(busdev)->segment)

extern struct pci_ops pci_root_ops;

static inline int pci_proc_domain(struct pci_bus *bus)
{
	return (pci_domain_nr(bus) != 0);
}

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;
}

#define pcibios_scan_all_fns(a, b)	0

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

#endif /* _ASM_IA64_PCI_H */
Commit	Line	Data
1da177e4 LT	1	#ifndef _ASM_IA64_PCI_H
	2	#define _ASM_IA64_PCI_H
	3
	4	#include <linux/mm.h>
	5	#include <linux/slab.h>
	6	#include <linux/spinlock.h>
	7	#include <linux/string.h>
	8	#include <linux/types.h>
	9
	10	#include <asm/io.h>
	11	#include <asm/scatterlist.h>
8621235b	12	#include <asm/hw_irq.h>
1da177e4 LT	13
	14	/*
	15	* Can be used to override the logic in pci_scan_bus for skipping already-configured bus
	16	* numbers - to be used for buggy BIOSes or architectures with incomplete PCI setup by the
	17	* loader.
	18	*/
	19	#define pcibios_assign_all_busses() 0
	20	#define pcibios_scan_all_fns(a, b) 0
	21
	22	#define PCIBIOS_MIN_IO 0x1000
	23	#define PCIBIOS_MIN_MEM 0x10000000
	24
	25	void pcibios_config_init(void);
	26
	27	struct pci_dev;
	28
	29	/*
3efe2d84 MW	30	* PCI_DMA_BUS_IS_PHYS should be set to 1 if there is _necessarily_ a direct
	31	* correspondence between device bus addresses and CPU physical addresses.
	32	* Platforms with a hardware I/O MMU _must_ turn this off to suppress the
	33	* bounce buffer handling code in the block and network device layers.
	34	* Platforms with separate bus address spaces _must_ turn this off and provide
	35	* a device DMA mapping implementation that takes care of the necessary
1da177e4 LT	36	* address translation.
1da177e4 LT	37	*
3efe2d84 MW	38	* For now, the ia64 platforms which may have separate/multiple bus address
	39	* spaces all have I/O MMUs which support the merging of physically
	40	* discontiguous buffers, so we can use that as the sole factor to determine
	41	* the setting of PCI_DMA_BUS_IS_PHYS.
1da177e4 LT	42	*/
	43	extern unsigned long ia64_max_iommu_merge_mask;
	44	#define PCI_DMA_BUS_IS_PHYS (ia64_max_iommu_merge_mask == ~0UL)
	45
	46	static inline void
	47	pcibios_set_master (struct pci_dev *dev)
	48	{
	49	/* No special bus mastering setup handling */
	50	}
	51
	52	static inline void
c9c3e457	53	pcibios_penalize_isa_irq (int irq, int active)
1da177e4 LT	54	{
	55	/* We don't do dynamic PCI IRQ allocation */
	56	}
	57
1da177e4 LT	58	#include <asm-generic/pci-dma-compat.h>
	59
	60	/* pci_unmap_{single,page} is not a nop, thus... */
	61	#define DECLARE_PCI_UNMAP_ADDR(ADDR_NAME) \
	62	dma_addr_t ADDR_NAME;
	63	#define DECLARE_PCI_UNMAP_LEN(LEN_NAME) \
	64	__u32 LEN_NAME;
	65	#define pci_unmap_addr(PTR, ADDR_NAME) \
	66	((PTR)->ADDR_NAME)
	67	#define pci_unmap_addr_set(PTR, ADDR_NAME, VAL) \
	68	(((PTR)->ADDR_NAME) = (VAL))
	69	#define pci_unmap_len(PTR, LEN_NAME) \
	70	((PTR)->LEN_NAME)
	71	#define pci_unmap_len_set(PTR, LEN_NAME, VAL) \
	72	(((PTR)->LEN_NAME) = (VAL))
	73
bb4a61b6	74	#ifdef CONFIG_PCI
e24c2d96 DM	75	static inline void pci_dma_burst_advice(struct pci_dev *pdev,
	76	enum pci_dma_burst_strategy *strat,
	77	unsigned long *strategy_parameter)
	78	{
	79	unsigned long cacheline_size;
	80	u8 byte;
	81
	82	pci_read_config_byte(pdev, PCI_CACHE_LINE_SIZE, &byte);
	83	if (byte == 0)
	84	cacheline_size = 1024;
	85	else
	86	cacheline_size = (int) byte * 4;
	87
	88	*strat = PCI_DMA_BURST_MULTIPLE;
	89	*strategy_parameter = cacheline_size;
	90	}
bb4a61b6	91	#endif
e24c2d96	92
1da177e4 LT	93	#define HAVE_PCI_MMAP
	94	extern int pci_mmap_page_range (struct pci_dev dev, struct vm_area_struct vma,
	95	enum pci_mmap_state mmap_state, int write_combine);
	96	#define HAVE_PCI_LEGACY
	97	extern int pci_mmap_legacy_page_range(struct pci_bus *bus,
f19aeb1f BH	98	struct vm_area_struct *vma,
f19aeb1f BH	99	enum pci_mmap_state mmap_state);
1da177e4 LT	100
	101	#define pci_get_legacy_mem platform_pci_get_legacy_mem
	102	#define pci_legacy_read platform_pci_legacy_read
	103	#define pci_legacy_write platform_pci_legacy_write
	104
	105	struct pci_window {
	106	struct resource resource;
	107	u64 offset;
	108	};
	109
	110	struct pci_controller {
	111	void *acpi_handle;
	112	void *iommu;
	113	int segment;
514604c6	114	int node; /* nearest node with memory or -1 for global allocation */
1da177e4 LT	115
	116	unsigned int windows;
	117	struct pci_window *window;
	118
	119	void *platform_data;
	120	};
	121
	122	#define PCI_CONTROLLER(busdev) ((struct pci_controller *) busdev->sysdata)
	123	#define pci_domain_nr(busdev) (PCI_CONTROLLER(busdev)->segment)
	124
	125	extern struct pci_ops pci_root_ops;
	126
	127	static inline int pci_proc_domain(struct pci_bus *bus)
	128	{
	129	return (pci_domain_nr(bus) != 0);
	130	}
	131
1da177e4 LT	132	extern void pcibios_resource_to_bus(struct pci_dev *dev,
	133	struct pci_bus_region region, struct resource res);
	134
	135	extern void pcibios_bus_to_resource(struct pci_dev *dev,
	136	struct resource res, struct pci_bus_region region);
	137
085ae41f DM	138	static inline struct resource *
	139	pcibios_select_root(struct pci_dev pdev, struct resource res)
	140	{
	141	struct resource *root = NULL;
	142
	143	if (res->flags & IORESOURCE_IO)
	144	root = &ioport_resource;
	145	if (res->flags & IORESOURCE_MEM)
	146	root = &iomem_resource;
	147
	148	return root;
	149	}
	150
1da177e4 LT	151	#define pcibios_scan_all_fns(a, b) 0
1da177e4 LT	152
677c0a78 BZ	153	#define HAVE_ARCH_PCI_GET_LEGACY_IDE_IRQ
	154	static inline int pci_get_legacy_ide_irq(struct pci_dev *dev, int channel)
	155	{
8621235b	156	return channel ? isa_irq_to_vector(15) : isa_irq_to_vector(14);
677c0a78 BZ	157	}
677c0a78 BZ	158
1da177e4	159	#endif /* _ASM_IA64_PCI_H */