diff options
Diffstat (limited to 'sys/arch/i386/include/bus.h')
| -rw-r--r-- | sys/arch/i386/include/bus.h | 475 |
1 files changed, 397 insertions, 78 deletions
diff --git a/sys/arch/i386/include/bus.h b/sys/arch/i386/include/bus.h index b5cfac6e3cb..17cbbcc784c 100644 --- a/sys/arch/i386/include/bus.h +++ b/sys/arch/i386/include/bus.h @@ -1,7 +1,9 @@ -/* $OpenBSD: bus.h,v 1.5 1996/07/31 01:45:53 niklas Exp $ */ -/* $NetBSD: bus.h,v 1.3 1996/05/03 19:22:18 christos Exp $ */ +/* $OpenBSD: bus.h,v 1.6 1996/11/12 22:46:27 niklas Exp $ */ +/* $NetBSD: bus.h,v 1.5 1996/10/21 22:26:19 thorpej Exp $ */ /* + * Copyright (c) 1996 Charles M. Hannum. All rights reserved. + * Copyright (c) 1996 Jason R. Thorpe. All rights reserved. * Copyright (c) 1996 Christopher G. Demetriou. All rights reserved. * * Redistribution and use in source and binary forms, with or without @@ -37,99 +39,416 @@ #include <machine/pio.h> /* - * I/O addresses (in bus space) + * Values for the i386 bus space tag, not to be used directly by MI code. */ -typedef u_long bus_io_addr_t; -typedef u_long bus_io_size_t; +#define I386_BUS_SPACE_IO 0 /* space is i/o space */ +#define I386_BUS_SPACE_MEM 1 /* space is mem space */ /* - * Memory addresses (in bus space) + * Bus address and size types */ -typedef u_long bus_mem_addr_t; -typedef u_long bus_mem_size_t; +typedef u_long bus_addr_t; +typedef u_long bus_size_t; /* - * Access methods for bus resources, I/O space, and memory space. + * Access methods for bus resources and address space. */ -typedef void *bus_chipset_tag_t; -typedef u_long bus_io_handle_t; -typedef caddr_t bus_mem_handle_t; - -#define bus_io_map(t, port, size, iohp) \ - ((void) t, *iohp = port, 0) -#define bus_io_unmap(t, ioh, size) - -#define bus_io_read_1(t, h, o) ((void) t, inb((h) + (o))) -#define bus_io_read_2(t, h, o) ((void) t, inw((h) + (o))) -#define bus_io_read_4(t, h, o) ((void) t, inl((h) + (o))) -#if 0 /* Cause a link error for bus_io_read_8 */ -#define bus_io_read_8(t, h, o) !!! bus_io_read_8 unimplemented !!! +typedef int bus_space_tag_t; +typedef u_long bus_space_handle_t; + +int bus_space_map __P((bus_space_tag_t t, bus_addr_t addr, + bus_size_t size, int cacheable, bus_space_handle_t *bshp)); +void bus_space_unmap __P((bus_space_tag_t t, bus_space_handle_t bsh, + bus_size_t size)); +int bus_space_subregion __P((bus_space_tag_t t, bus_space_handle_t bsh, + bus_size_t offset, bus_size_t size, bus_space_handle_t *nbshp)); + +int bus_space_alloc __P((bus_space_tag_t t, bus_addr_t rstart, + bus_addr_t rend, bus_size_t size, bus_size_t align, + bus_addr_t boundary, int cacheable, bus_addr_t *addrp, + bus_space_handle_t *bshp)); +void bus_space_free __P((bus_space_tag_t t, bus_space_handle_t bsh, + bus_size_t size)); + +/* + * u_intN_t bus_space_read_N __P((bus_space_tag_t tag, + * bus_space_handle_t bsh, bus_size_t offset)); + * + * Read a 1, 2, 4, or 8 byte quantity from bus space + * described by tag/handle/offset. + */ + +#define bus_space_read_1(t, h, o) \ + ((t) == I386_BUS_SPACE_IO ? (inb((h) + (o))) : \ + (*(volatile u_int8_t *)((h) + (o)))) + +#define bus_space_read_2(t, h, o) \ + ((t) == I386_BUS_SPACE_IO ? (inw((h) + (o))) : \ + (*(volatile u_int16_t *)((h) + (o)))) + +#define bus_space_read_4(t, h, o) \ + ((t) == I386_BUS_SPACE_IO ? (inl((h) + (o))) : \ + (*(volatile u_int32_t *)((h) + (o)))) + +#if 0 /* Cause a link error for bus_space_read_8 */ +#define bus_space_read_8(t, h, o) !!! bus_space_read_8 unimplemented !!! #endif -#define bus_io_read_multi_1(t, h, o, a, c) \ - ((void) t, insb((h) + (o), (a), (c))) -#define bus_io_read_multi_2(t, h, o, a, c) \ - ((void) t, insw((h) + (o), (a), (c))) -#define bus_io_read_multi_4(t, h, o, a, c) \ - ((void) t, insl((h) + (o), (a), (c))) -#if 0 /* Cause a link error for bus_io_read_multi_8 */ -#define bus_io_read_multi_8(t, h, o, a, c) \ - !!! bus_io_read_multi_8 unimplemented !!! +/* + * void bus_space_read_multi_N __P((bus_space_tag_t tag, + * bus_space_handle_t bsh, bus_size_t offset, + * u_intN_t *addr, size_t count)); + * + * Read `count' 1, 2, 4, or 8 byte quantities from bus space + * described by tag/handle/offset and copy into buffer provided. + */ + +#define bus_space_read_multi_1(t, h, o, a, c) do { \ + if ((t) == I386_BUS_SPACE_IO) { \ + insb((h) + (o), (a), (c)); \ + } else { \ + __asm __volatile(" \ + cld ; \ + 1: movb (%0),%%al ; \ + stosb ; \ + loop 1b" : \ + : \ + "r" ((h) + (o)), "D" ((a)), "c" ((c)) : \ + "%edi", "%ecx", "%eax", "memory"); \ + } \ +} while (0) + +#define bus_space_read_multi_2(t, h, o, a, c) do { \ + if ((t) == I386_BUS_SPACE_IO) { \ + insw((h) + (o), (a), (c)); \ + } else { \ + __asm __volatile(" \ + cld ; \ + 1: movw (%0),%%ax ; \ + stosw ; \ + loop 1b" : \ + : \ + "r" ((h) + (o)), "D" ((a)), "c" ((c)) : \ + "%edi", "%ecx", "%eax", "memory"); \ + } \ +} while (0) + +#define bus_space_read_multi_4(t, h, o, a, c) do { \ + if ((t) == I386_BUS_SPACE_IO) { \ + insl((h) + (o), (a), (c)); \ + } else { \ + __asm __volatile(" \ + cld ; \ + 1: movl (%0),%%eax ; \ + stosl ; \ + loop 1b" : \ + : \ + "r" ((h) + (o)), "D" ((a)), "c" ((c)) : \ + "%edi", "%ecx", "%eax", "memory"); \ + } \ +} while (0) + +#if 0 /* Cause a link error for bus_space_read_multi_8 */ +#define bus_space_read_multi_8 !!! bus_space_read_multi_8 unimplemented !!! #endif -#define bus_io_write_1(t, h, o, v) ((void) t, outb((h) + (o), (v))) -#define bus_io_write_2(t, h, o, v) ((void) t, outw((h) + (o), (v))) -#define bus_io_write_4(t, h, o, v) ((void) t, outl((h) + (o), (v))) -#if 0 /* Cause a link error for bus_io_write_8 */ -#define bus_io_write_8(t, h, o, v) !!! bus_io_write_8 unimplemented !!! +/* + * void bus_space_read_region_N __P((bus_space_tag_t tag, + * bus_space_handle_t bsh, bus_size_t offset, + * u_intN_t *addr, size_t count)); + * + * Read `count' 1, 2, 4, or 8 byte quantities from bus space + * described by tag/handle and starting at `offset' and copy into + * buffer provided. + */ + +#define bus_space_read_region_1(t, h, o, a, c) do { \ + if ((t) == I386_BUS_SPACE_IO) { \ + __asm __volatile(" \ + cld ; \ + 1: inb %w0,%%al ; \ + stosb ; \ + incl %0 ; \ + loop 1b" : \ + : \ + "d" ((h) + (o)), "D" ((a)), "c" ((c)) : \ + "%edx", "%edi", "%ecx", "%eax", "memory"); \ + } else { \ + __asm __volatile(" \ + cld ; \ + repne ; \ + movsb" : \ + : \ + "S" ((h) + (o)), "D" ((a)), "c" ((c)) : \ + "%esi", "%edi", "%ecx", "memory"); \ + } \ +} while (0) + +#define bus_space_read_region_2(t, h, o, a, c) do { \ + if ((t) == I386_BUS_SPACE_IO) { \ + __asm __volatile(" \ + cld ; \ + 1: inw %w0,%%ax ; \ + stosw ; \ + addl $2,%0 ; \ + loop 1b" : \ + : \ + "d" ((h) + (o)), "D" ((a)), "c" ((c)) : \ + "%edx", "%edi", "%ecx", "%eax", "memory"); \ + } else { \ + __asm __volatile(" \ + cld ; \ + repne ; \ + movsw" : \ + : \ + "S" ((h) + (o)), "D" ((a)), "c" ((c)) : \ + "%esi", "%edi", "%ecx", "memory"); \ + } \ +} while (0) + +#define bus_space_read_region_4(t, h, o, a, c) do { \ + if ((t) == I386_BUS_SPACE_IO) { \ + __asm __volatile(" \ + cld ; \ + 1: inl %w0,%%eax ; \ + stosl ; \ + addl $4,%0 ; \ + loop 1b" : \ + : \ + "d" ((h) + (o)), "D" ((a)), "c" ((c)) : \ + "%edx", "%edi", "%ecx", "%eax", "memory"); \ + } else { \ + __asm __volatile(" \ + cld ; \ + repne ; \ + movsl" : \ + : \ + "S" ((h) + (o)), "D" ((a)), "c" ((c)) : \ + "%esi", "%edi", "%ecx", "memory"); \ + } \ +} while (0) + +#if 0 /* Cause a link error for bus_space_read_region_8 */ +#define bus_space_read_region_8 !!! bus_space_read_region_8 unimplemented !!! #endif -#define bus_io_write_multi_1(t, h, o, a, c) \ - ((void) t, outsb((h) + (o), (a), (c))) -#define bus_io_write_multi_2(t, h, o, a, c) \ - ((void) t, outsw((h) + (o), (a), (c))) -#define bus_io_write_multi_4(t, h, o, a, c) \ - ((void) t, outsl((h) + (o), (a), (c))) -#if 0 /* Cause a link error for bus_io_write_multi_8 */ -#define bus_io_write_multi_8(t, h, o, a, c) \ - !!! bus_io_write_multi_8 unimplimented !!! +/* + * void bus_space_write_N __P((bus_space_tag_t tag, + * bus_space_handle_t bsh, bus_size_t offset, + * u_intN_t value)); + * + * Write the 1, 2, 4, or 8 byte value `value' to bus space + * described by tag/handle/offset. + */ + +#define bus_space_write_1(t, h, o, v) do { \ + if ((t) == I386_BUS_SPACE_IO) \ + outb((h) + (o), (v)); \ + else \ + ((void)(*(volatile u_int8_t *)((h) + (o)) = (v))); \ +} while (0) + +#define bus_space_write_2(t, h, o, v) do { \ + if ((t) == I386_BUS_SPACE_IO) \ + outw((h) + (o), (v)); \ + else \ + ((void)(*(volatile u_int16_t *)((h) + (o)) = (v))); \ +} while (0) + +#define bus_space_write_4(t, h, o, v) do { \ + if ((t) == I386_BUS_SPACE_IO) \ + outl((h) + (o), (v)); \ + else \ + ((void)(*(volatile u_int32_t *)((h) + (o)) = (v))); \ +} while (0) + +#if 0 /* Cause a link error for bus_space_write_8 */ +#define bus_space_write_8 !!! bus_space_write_8 not implemented !!! #endif -int bus_mem_map __P((bus_chipset_tag_t t, bus_mem_addr_t bpa, - bus_mem_size_t size, int cacheable, bus_mem_handle_t *mhp)); -void bus_mem_unmap __P((bus_chipset_tag_t t, bus_mem_handle_t memh, - bus_mem_size_t size)); - -#define bus_mem_read_1(t, h, o) ((void) t, (*(volatile u_int8_t *)((h) + (o)))) -#define bus_mem_read_2(t, h, o) ((void) t, (*(volatile u_int16_t *)((h) + (o)))) -#define bus_mem_read_4(t, h, o) ((void) t, (*(volatile u_int32_t *)((h) + (o)))) -#define bus_mem_read_8(t, h, o) ((void) t, (*(volatile u_int64_t *)((h) + (o)))) - -#define bus_mem_write_1(t, h, o, v) \ - ((void) t, ((void)(*(volatile u_int8_t *)((h) + (o)) = (v)))) -#define bus_mem_write_2(t, h, o, v) \ - ((void) t, ((void)(*(volatile u_int16_t *)((h) + (o)) = (v)))) -#define bus_mem_write_4(t, h, o, v) \ - ((void) t, ((void)(*(volatile u_int32_t *)((h) + (o)) = (v)))) -#define bus_mem_write_8(t, h, o, v) \ - ((void) t, ((void)(*(volatile u_int64_t *)((h) + (o)) = (v)))) - -#define bus_io_read_raw_multi_2(t, h, o, a, c) \ - ((void) t, insw((h) + (o), (a), (c) >> 1)) -#define bus_io_read_raw_multi_4(t, h, o, a, c) \ - ((void) t, insl((h) + (o), (a), (c) >> 2)) -#if 0 /* Cause a link error for bus_io_read_raw_multi_8 */ -#define bus_io_read_raw_multi_8(t, h, o, a, c) \ - !!! bus_io_read_multi_8 unimplemented !!! +/* + * void bus_space_write_multi_N __P((bus_space_tag_t tag, + * bus_space_handle_t bsh, bus_size_t offset, + * u_intN_t *addr, size_t count)); + * + * Write `count' 1, 2, 4, or 8 byte quantities from the buffer + * provided to bus space described by tag/handle/offset. + */ + +#define bus_space_write_multi_1(t, h, o, a, c) do { \ + if ((t) == I386_BUS_SPACE_IO) { \ + outsb((h) + (o), (a), (c)); \ + } else { \ + __asm __volatile(" \ + cld ; \ + 1: lodsb ; \ + movb %%al,(%0) ; \ + loop 1b" : \ + : \ + "r" ((h) + (o)), "S" ((a)), "c" ((c)) : \ + "%esi", "%ecx", "%eax"); \ + } \ +} while (0) + +#define bus_space_write_multi_2(t, h, o, a, c) do { \ + if ((t) == I386_BUS_SPACE_IO) { \ + outsw((h) + (o), (a), (c)); \ + } else { \ + __asm __volatile(" \ + cld ; \ + 1: lodsw ; \ + movw %%ax,(%0) ; \ + loop 1b" : \ + : \ + "r" ((h) + (o)), "S" ((a)), "c" ((c)) : \ + "%esi", "%ecx", "%eax"); \ + } \ +} while (0) + +#define bus_space_write_multi_4(t, h, o, a, c) do { \ + if ((t) == I386_BUS_SPACE_IO) { \ + outsl((h) + (o), (a), (c)); \ + } else { \ + __asm __volatile(" \ + cld ; \ + 1: lodsl ; \ + movl %%eax,(%0) ; \ + loop 1b" : \ + : \ + "r" ((h) + (o)), "S" ((a)), "c" ((c)) : \ + "%esi", "%ecx", "%eax"); \ + } \ +} while (0) + +#if 0 /* Cause a link error for bus_space_write_multi_8 */ +#define bus_space_write_multi_8(t, h, o, a, c) \ + !!! bus_space_write_multi_8 unimplimented !!! #endif -#define bus_io_write_raw_multi_2(t, h, o, a, c) \ - ((void) t, outsw((h) + (o), (a), (c) >> 1)) -#define bus_io_write_raw_multi_4(t, h, o, a, c) \ - ((void) t, outsl((h) + (o), (a), (c) >> 2)) -#if 0 /* Cause a link error for bus_io_write_raw_multi_8 */ -#define bus_io_write_raw_multi_8(t, h, o, a, c) \ - !!! bus_io_write_multi_8 unimplimented !!! +/* + * void bus_space_write_region_N __P((bus_space_tag_t tag, + * bus_space_handle_t bsh, bus_size_t offset, + * u_intN_t *addr, size_t count)); + * + * Write `count' 1, 2, 4, or 8 byte quantities from the buffer provided + * to bus space described by tag/handle starting at `offset'. + */ + +#define bus_space_write_region_1(t, h, o, a, c) do { \ + if ((t) == I386_BUS_SPACE_IO) { \ + __asm __volatile(" \ + cld ; \ + 1: lodsb ; \ + outb %%al,%w0 ; \ + incl %0 ; \ + loop 1b" : \ + : \ + "d" ((h) + (o)), "S" ((a)), "c" ((c)) : \ + "%edx", "%esi", "%ecx", "%eax", "memory"); \ + } else { \ + __asm __volatile(" \ + cld ; \ + repne ; \ + movsb" : \ + : \ + "D" ((h) + (o)), "S" ((a)), "c" ((c)) : \ + "%edi", "%esi", "%ecx", "memory"); \ + } \ +} while (0) + +#define bus_space_write_region_2(t, h, o, a, c) do { \ + if ((t) == I386_BUS_SPACE_IO) { \ + __asm __volatile(" \ + cld ; \ + 1: lodsw ; \ + outw %%ax,%w0 ; \ + addl $2,%0 ; \ + loop 1b" : \ + : \ + "d" ((h) + (o)), "S" ((a)), "c" ((c)) : \ + "%edx", "%esi", "%ecx", "%eax", "memory"); \ + } else { \ + __asm __volatile(" \ + cld ; \ + repne ; \ + movsw" : \ + : \ + "D" ((h) + (o)), "S" ((a)), "c" ((c)) : \ + "%edi", "%esi", "%ecx", "memory"); \ + } \ +} while (0) + +#define bus_space_write_region_4(t, h, o, a, c) do { \ + if ((t) == I386_BUS_SPACE_IO) { \ + __asm __volatile(" \ + cld ; \ + 1: lodsl ; \ + outl %%eax,%w0 ; \ + addl $4,%0 ; \ + loop 1b" : \ + : \ + "d" ((h) + (o)), "S" ((a)), "c" ((c)) : \ + "%edx", "%esi", "%ecx", "%eax", "memory"); \ + } else { \ + __asm __volatile(" \ + cld ; \ + repne ; \ + movsl" : \ + : \ + "D" ((h) + (o)), "S" ((a)), "c" ((c)) : \ + "%edi", "%esi", "%ecx", "memory"); \ + } \ +} while (0) + +#if 0 /* Cause a link error for bus_space_write_region_8 */ +#define bus_space_write_region_8 \ + !!! bus_space_write_region_8 unimplemented !!! #endif +/* + * void bus_space_set_multi_N __P((bus_space_tag_t tag, + * bus_space_handle_t bsh, u_intN_t val, size_t count)); + * + * Write the 1, 2, 4, or 8 byte value `val' to bus space described + * by tag/handle/offset `count' times. + */ + + /* XXX IMPLEMENT bus_space_set_multi_N() XXX */ + +/* + * void bus_space_set_region_N __P((bus_space_tag_t tag, + * bus_space_handle_t bsh, u_intN_t val, size_t count)); + * + * Write `count' 1, 2, 4, or 8 byte value `val' to bus space described + * by tag/handle starting at `offset'. + */ + + /* XXX IMPLEMENT bus_space_set_region_N() XXX */ + +/* + * void bus_space_copy_N __P((bus_space_tag_t tag, + * bus_space_handle_t bsh1, bus_size_t off1, + * bus_space_handle_t bsh2, bus_size_t off2, + * size_t count)); + * + * Copy `count' 1, 2, 4, or 8 byte values from bus space starting + * at tag/bsh1/off1 to bus space starting at tag/bsh2/off2. + */ + + /* XXX IMPLEMENT bus_space_copy_N() XXX */ + +/* + * Bus read/write barrier methods. + * + * void bus_space_barrier __P((bus_space_tag_t tag, + * bus_space_handle_t bsh, bus_size_t offset, + * bus_size_t len, int flags)); + * + * Note: the i386 does not currently require barriers, but we must + * provide the flags to MI code. + */ +#define bus_space_barrier(t, h, o, l, f) +#define BUS_BARRIER_READ 0x01 /* force read barrier */ +#define BUS_BARRIER_WRITE 0x02 /* force write barrier */ + #endif /* _I386_BUS_H_ */ |