| /* |
| * ioport.h Definitions of routines for detecting, reserving and |
| * allocating system resources. |
| * |
| * Authors: Linus Torvalds |
| */ |
| |
| #ifndef _LINUX_IOPORT_H |
| #define _LINUX_IOPORT_H |
| |
| #ifndef __ASSEMBLY__ |
| #include <linux/compiler.h> |
| #include <linux/types.h> |
| /* |
| * Resources are tree-like, allowing |
| * nesting etc.. |
| */ |
| struct resource { |
| resource_size_t start; |
| resource_size_t end; |
| const char *name; |
| unsigned long flags; |
| struct resource *parent, *sibling, *child; |
| }; |
| |
| struct resource_list { |
| struct resource_list *next; |
| struct resource *res; |
| struct pci_dev *dev; |
| }; |
| |
| /* |
| * IO resources have these defined flags. |
| */ |
| #define IORESOURCE_BITS 0x000000ff /* Bus-specific bits */ |
| |
| #define IORESOURCE_TYPE_BITS 0x00000f00 /* Resource type */ |
| #define IORESOURCE_IO 0x00000100 |
| #define IORESOURCE_MEM 0x00000200 |
| #define IORESOURCE_IRQ 0x00000400 |
| #define IORESOURCE_DMA 0x00000800 |
| |
| #define IORESOURCE_PREFETCH 0x00001000 /* No side effects */ |
| #define IORESOURCE_READONLY 0x00002000 |
| #define IORESOURCE_CACHEABLE 0x00004000 |
| #define IORESOURCE_RANGELENGTH 0x00008000 |
| #define IORESOURCE_SHADOWABLE 0x00010000 |
| |
| #define IORESOURCE_SIZEALIGN 0x00020000 /* size indicates alignment */ |
| #define IORESOURCE_STARTALIGN 0x00040000 /* start field is alignment */ |
| |
| #define IORESOURCE_MEM_64 0x00100000 |
| |
| #define IORESOURCE_EXCLUSIVE 0x08000000 /* Userland may not map this resource */ |
| #define IORESOURCE_DISABLED 0x10000000 |
| #define IORESOURCE_UNSET 0x20000000 |
| #define IORESOURCE_AUTO 0x40000000 |
| #define IORESOURCE_BUSY 0x80000000 /* Driver has marked this resource busy */ |
| |
| /* PnP IRQ specific bits (IORESOURCE_BITS) */ |
| #define IORESOURCE_IRQ_HIGHEDGE (1<<0) |
| #define IORESOURCE_IRQ_LOWEDGE (1<<1) |
| #define IORESOURCE_IRQ_HIGHLEVEL (1<<2) |
| #define IORESOURCE_IRQ_LOWLEVEL (1<<3) |
| #define IORESOURCE_IRQ_SHAREABLE (1<<4) |
| #define IORESOURCE_IRQ_OPTIONAL (1<<5) |
| |
| /* PnP DMA specific bits (IORESOURCE_BITS) */ |
| #define IORESOURCE_DMA_TYPE_MASK (3<<0) |
| #define IORESOURCE_DMA_8BIT (0<<0) |
| #define IORESOURCE_DMA_8AND16BIT (1<<0) |
| #define IORESOURCE_DMA_16BIT (2<<0) |
| |
| #define IORESOURCE_DMA_MASTER (1<<2) |
| #define IORESOURCE_DMA_BYTE (1<<3) |
| #define IORESOURCE_DMA_WORD (1<<4) |
| |
| #define IORESOURCE_DMA_SPEED_MASK (3<<6) |
| #define IORESOURCE_DMA_COMPATIBLE (0<<6) |
| #define IORESOURCE_DMA_TYPEA (1<<6) |
| #define IORESOURCE_DMA_TYPEB (2<<6) |
| #define IORESOURCE_DMA_TYPEF (3<<6) |
| |
| /* PnP memory I/O specific bits (IORESOURCE_BITS) */ |
| #define IORESOURCE_MEM_WRITEABLE (1<<0) /* dup: IORESOURCE_READONLY */ |
| #define IORESOURCE_MEM_CACHEABLE (1<<1) /* dup: IORESOURCE_CACHEABLE */ |
| #define IORESOURCE_MEM_RANGELENGTH (1<<2) /* dup: IORESOURCE_RANGELENGTH */ |
| #define IORESOURCE_MEM_TYPE_MASK (3<<3) |
| #define IORESOURCE_MEM_8BIT (0<<3) |
| #define IORESOURCE_MEM_16BIT (1<<3) |
| #define IORESOURCE_MEM_8AND16BIT (2<<3) |
| #define IORESOURCE_MEM_32BIT (3<<3) |
| #define IORESOURCE_MEM_SHADOWABLE (1<<5) /* dup: IORESOURCE_SHADOWABLE */ |
| #define IORESOURCE_MEM_EXPANSIONROM (1<<6) |
| |
| /* PnP I/O specific bits (IORESOURCE_BITS) */ |
| #define IORESOURCE_IO_16BIT_ADDR (1<<0) |
| #define IORESOURCE_IO_FIXED (1<<1) |
| |
| /* PCI ROM control bits (IORESOURCE_BITS) */ |
| #define IORESOURCE_ROM_ENABLE (1<<0) /* ROM is enabled, same as PCI_ROM_ADDRESS_ENABLE */ |
| #define IORESOURCE_ROM_SHADOW (1<<1) /* ROM is copy at C000:0 */ |
| #define IORESOURCE_ROM_COPY (1<<2) /* ROM is alloc'd copy, resource field overlaid */ |
| #define IORESOURCE_ROM_BIOS_COPY (1<<3) /* ROM is BIOS copy, resource field overlaid */ |
| |
| /* PCI control bits. Shares IORESOURCE_BITS with above PCI ROM. */ |
| #define IORESOURCE_PCI_FIXED (1<<4) /* Do not move resource */ |
| |
| /* PC/ISA/whatever - the normal PC address spaces: IO and memory */ |
| extern struct resource ioport_resource; |
| extern struct resource iomem_resource; |
| |
| extern int request_resource(struct resource *root, struct resource *new); |
| extern int release_resource(struct resource *new); |
| extern void reserve_region_with_split(struct resource *root, |
| resource_size_t start, resource_size_t end, |
| const char *name); |
| extern int insert_resource(struct resource *parent, struct resource *new); |
| extern void insert_resource_expand_to_fit(struct resource *root, struct resource *new); |
| extern int allocate_resource(struct resource *root, struct resource *new, |
| resource_size_t size, resource_size_t min, |
| resource_size_t max, resource_size_t align, |
| resource_size_t (*alignf)(void *, |
| const struct resource *, |
| resource_size_t, |
| resource_size_t), |
| void *alignf_data); |
| int adjust_resource(struct resource *res, resource_size_t start, |
| resource_size_t size); |
| resource_size_t resource_alignment(struct resource *res); |
| static inline resource_size_t resource_size(const struct resource *res) |
| { |
| return res->end - res->start + 1; |
| } |
| static inline unsigned long resource_type(const struct resource *res) |
| { |
| return res->flags & IORESOURCE_TYPE_BITS; |
| } |
| |
| /* Convenience shorthand with allocation */ |
| #define request_region(start,n,name) __request_region(&ioport_resource, (start), (n), (name), 0) |
| #define __request_mem_region(start,n,name, excl) __request_region(&iomem_resource, (start), (n), (name), excl) |
| #define request_mem_region(start,n,name) __request_region(&iomem_resource, (start), (n), (name), 0) |
| #define request_mem_region_exclusive(start,n,name) \ |
| __request_region(&iomem_resource, (start), (n), (name), IORESOURCE_EXCLUSIVE) |
| #define rename_region(region, newname) do { (region)->name = (newname); } while (0) |
| |
| extern struct resource * __request_region(struct resource *, |
| resource_size_t start, |
| resource_size_t n, |
| const char *name, int flags); |
| |
| /* Compatibility cruft */ |
| #define release_region(start,n) __release_region(&ioport_resource, (start), (n)) |
| #define check_mem_region(start,n) __check_region(&iomem_resource, (start), (n)) |
| #define release_mem_region(start,n) __release_region(&iomem_resource, (start), (n)) |
| |
| extern int __check_region(struct resource *, resource_size_t, resource_size_t); |
| extern void __release_region(struct resource *, resource_size_t, |
| resource_size_t); |
| |
| static inline int __deprecated check_region(resource_size_t s, |
| resource_size_t n) |
| { |
| return __check_region(&ioport_resource, s, n); |
| } |
| |
| /* Wrappers for managed devices */ |
| struct device; |
| #define devm_request_region(dev,start,n,name) \ |
| __devm_request_region(dev, &ioport_resource, (start), (n), (name)) |
| #define devm_request_mem_region(dev,start,n,name) \ |
| __devm_request_region(dev, &iomem_resource, (start), (n), (name)) |
| |
| extern struct resource * __devm_request_region(struct device *dev, |
| struct resource *parent, resource_size_t start, |
| resource_size_t n, const char *name); |
| |
| #define devm_release_region(dev, start, n) \ |
| __devm_release_region(dev, &ioport_resource, (start), (n)) |
| #define devm_release_mem_region(dev, start, n) \ |
| __devm_release_region(dev, &iomem_resource, (start), (n)) |
| |
| extern void __devm_release_region(struct device *dev, struct resource *parent, |
| resource_size_t start, resource_size_t n); |
| extern int iomem_map_sanity_check(resource_size_t addr, unsigned long size); |
| extern int iomem_is_exclusive(u64 addr); |
| |
| extern int |
| walk_system_ram_range(unsigned long start_pfn, unsigned long nr_pages, |
| void *arg, int (*func)(unsigned long, unsigned long, void *)); |
| |
| #endif /* __ASSEMBLY__ */ |
| #endif /* _LINUX_IOPORT_H */ |