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-rw-r--r--sys/arch/i386/include/bus.h475
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_ */