/* $NetBSD: bus.h,v 1.12 1997/10/01 08:25:15 fvdl Exp $ */ /*- * Copyright (c) 1996, 1997 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, * NASA Ames Research Center. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the NetBSD * Foundation, Inc. and its contributors. * 4. Neither the name of The NetBSD Foundation nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ /* * Copyright (c) 1996 Charles M. Hannum. All rights reserved. * Copyright (c) 1996 Christopher G. Demetriou. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by Christopher G. Demetriou * for the NetBSD Project. * 4. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ /* $FreeBSD$ */ #ifndef _ALPHA_BUS_H_ #define _ALPHA_BUS_H_ #include /* * To remain compatible with NetBSD's interface, default to both memio and * pio when neither of them is defined. */ #if !defined(_ALPHA_BUS_PIO_H_) && !defined(_ALPHA_BUS_MEMIO_H_) #define _ALPHA_BUS_PIO_H_ #define _ALPHA_BUS_MEMIO_H_ #endif /* * Values for the alpha bus space tag, not to be used directly by MI code. */ #define ALPHA_BUS_SPACE_IO 0 /* space is i/o space */ #define ALPHA_BUS_SPACE_MEM 1 /* space is mem space */ /* * Bus address and size types */ typedef u_long bus_addr_t; typedef u_long bus_size_t; #define BUS_SPACE_MAXSIZE_24BIT 0xFFFFFF #define BUS_SPACE_MAXSIZE_32BIT 0xFFFFFFFF #define BUS_SPACE_MAXSIZE (64 * 1024) /* Maximum supported size */ #define BUS_SPACE_MAXADDR_24BIT 0xFFFFFF #define BUS_SPACE_MAXADDR_32BIT 0xFFFFFFFF #define BUS_SPACE_MAXADDR 0xFFFFFFFF #define BUS_SPACE_UNRESTRICTED (~0) /* * Access methods for bus resources and address space. */ typedef int bus_space_tag_t; typedef u_long bus_space_handle_t; /* * Map a region of device bus space into CPU virtual address space. */ #define BUS_SPACE_MAP_CACHEABLE 0x01 #define BUS_SPACE_MAP_LINEAR 0x02 int bus_space_map(bus_space_tag_t t, bus_addr_t addr, bus_size_t size, int flags, bus_space_handle_t *bshp); /* * Unmap a region of device bus space. */ void bus_space_unmap(bus_space_tag_t t, bus_space_handle_t bsh, bus_size_t size); /* * Get a new handle for a subregion of an already-mapped area of bus space. */ int bus_space_subregion(bus_space_tag_t t, bus_space_handle_t bsh, bus_size_t offset, bus_size_t size, bus_space_handle_t *nbshp); /* * Allocate a region of memory that is accessible to devices in bus space. */ int bus_space_alloc(bus_space_tag_t t, bus_addr_t rstart, bus_addr_t rend, bus_size_t size, bus_size_t align, bus_size_t boundary, int flags, bus_addr_t *addrp, bus_space_handle_t *bshp); /* * Free a region of bus space accessible memory. */ void bus_space_free(bus_space_tag_t t, bus_space_handle_t bsh, bus_size_t size); #if defined(_ALPHA_BUS_PIO_H_) || defined(_ALPHA_BUS_MEMIO_H_) /* * Read a 1, 2, 4, or 8 byte quantity from bus space * described by tag/handle/offset. */ static __inline u_int8_t bus_space_read_1(bus_space_tag_t tag, bus_space_handle_t handle, bus_size_t offset); static __inline u_int16_t bus_space_read_2(bus_space_tag_t tag, bus_space_handle_t handle, bus_size_t offset); static __inline u_int32_t bus_space_read_4(bus_space_tag_t tag, bus_space_handle_t handle, bus_size_t offset); static __inline u_int8_t bus_space_read_1(bus_space_tag_t tag, bus_space_handle_t handle, bus_size_t offset) { #if defined (_ALPHA_BUS_PIO_H_) #if defined (_ALPHA_BUS_MEMIO_H_) if (tag == ALPHA_BUS_SPACE_IO) #endif return (inb(handle + offset)); #endif #if defined (_ALPHA_BUS_MEMIO_H_) return (readb(handle + offset)); #endif } static __inline u_int16_t bus_space_read_2(bus_space_tag_t tag, bus_space_handle_t handle, bus_size_t offset) { #if defined(_ALPHA_BUS_PIO_H_) #if defined(_ALPHA_BUS_MEMIO_H_) if (tag == ALPHA_BUS_SPACE_IO) #endif return (inw(handle + offset)); #endif #if defined(_ALPHA_BUS_MEMIO_H_) return (readw(handle + offset)); #endif } static __inline u_int32_t bus_space_read_4(bus_space_tag_t tag, bus_space_handle_t handle, bus_size_t offset) { #if defined(_ALPHA_BUS_PIO_H_) #if defined(_ALPHA_BUS_MEMIO_H_) if (tag == ALPHA_BUS_SPACE_IO) #endif return (inl(handle + offset)); #endif #if defined(_ALPHA_BUS_MEMIO_H_) return (readl(handle + offset)); #endif } #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 /* * Read `count' 1, 2, 4, or 8 byte quantities from bus space * described by tag/handle/offset and copy into buffer provided. */ static __inline void bus_space_read_multi_1(bus_space_tag_t tag, bus_space_handle_t bsh, bus_size_t offset, u_int8_t *addr, size_t count); static __inline void bus_space_read_multi_2(bus_space_tag_t tag, bus_space_handle_t bsh, bus_size_t offset, u_int16_t *addr, size_t count); static __inline void bus_space_read_multi_4(bus_space_tag_t tag, bus_space_handle_t bsh, bus_size_t offset, u_int32_t *addr, size_t count); static __inline void bus_space_read_multi_1(bus_space_tag_t tag, bus_space_handle_t bsh, bus_size_t offset, u_int8_t *addr, size_t count) { #if defined(_ALPHA_BUS_PIO_H_) #if defined(_ALPHA_BUS_MEMIO_H_) if (tag == ALPHA_BUS_SPACE_IO) #endif while (count--) *addr++ = inb(bsh + offset); #endif #if defined(_ALPHA_BUS_MEMIO_H_) #if defined(_ALPHA_BUS_PIO_H_) else #endif while (count--) *addr++ = readb(bsh + offset); #endif } static __inline void bus_space_read_multi_2(bus_space_tag_t tag, bus_space_handle_t bsh, bus_size_t offset, u_int16_t *addr, size_t count) { bus_addr_t baddr = bsh + offset; #if defined(_ALPHA_BUS_PIO_H_) #if defined(_ALPHA_BUS_MEMIO_H_) if (tag == ALPHA_BUS_SPACE_IO) #endif while (count--) *addr++ = inw(baddr); #endif #if defined(_ALPHA_BUS_MEMIO_H_) #if defined(_ALPHA_BUS_PIO_H_) else #endif while (count--) *addr++ = readw(baddr); #endif } static __inline void bus_space_read_multi_4(bus_space_tag_t tag, bus_space_handle_t bsh, bus_size_t offset, u_int32_t *addr, size_t count) { bus_addr_t baddr = bsh + offset; #if defined(_ALPHA_BUS_PIO_H_) #if defined(_ALPHA_BUS_MEMIO_H_) if (tag == ALPHA_BUS_SPACE_IO) #endif while (count--) *addr++ = inl(baddr); #endif #if defined(_ALPHA_BUS_MEMIO_H_) #if defined(_ALPHA_BUS_PIO_H_) else #endif while (count--) *addr++ = readl(baddr); #endif } #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 /* * 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. */ static __inline void bus_space_read_region_1(bus_space_tag_t tag, bus_space_handle_t bsh, bus_size_t offset, u_int8_t *addr, size_t count); static __inline void bus_space_read_region_2(bus_space_tag_t tag, bus_space_handle_t bsh, bus_size_t offset, u_int16_t *addr, size_t count); static __inline void bus_space_read_region_4(bus_space_tag_t tag, bus_space_handle_t bsh, bus_size_t offset, u_int32_t *addr, size_t count); static __inline void bus_space_read_region_1(bus_space_tag_t tag, bus_space_handle_t bsh, bus_size_t offset, u_int8_t *addr, size_t count) { bus_addr_t baddr = bsh + offset; #if defined(_ALPHA_BUS_PIO_H_) #if defined(_ALPHA_BUS_MEMIO_H_) if (tag == ALPHA_BUS_SPACE_IO) #endif while (count--) { *addr++ = inb(baddr); baddr += 1; } #endif #if defined(_ALPHA_BUS_MEMIO_H_) #if defined(_ALPHA_BUS_PIO_H_) else #endif while (count--) { *addr++ = readb(baddr); baddr += 1; } #endif } static __inline void bus_space_read_region_2(bus_space_tag_t tag, bus_space_handle_t bsh, bus_size_t offset, u_int16_t *addr, size_t count) { bus_addr_t baddr = bsh + offset; #if defined(_ALPHA_BUS_PIO_H_) #if defined(_ALPHA_BUS_MEMIO_H_) if (tag == ALPHA_BUS_SPACE_IO) #endif while (count--) { *addr++ = inw(baddr); baddr += 2; } #endif #if defined(_ALPHA_BUS_MEMIO_H_) #if defined(_ALPHA_BUS_PIO_H_) else #endif while (count--) { *addr++ = readw(baddr); baddr += 2; } #endif } static __inline void bus_space_read_region_4(bus_space_tag_t tag, bus_space_handle_t bsh, bus_size_t offset, u_int32_t *addr, size_t count) { bus_addr_t baddr = bsh + offset; #if defined(_ALPHA_BUS_PIO_H_) #if defined(_ALPHA_BUS_MEMIO_H_) if (tag == ALPHA_BUS_SPACE_IO) #endif while (count--) { *addr++ = inl(baddr); baddr += 4; } #endif #if defined(_ALPHA_BUS_MEMIO_H_) #if defined(_ALPHA_BUS_PIO_H_) else #endif while (count--) { *addr++ = readb(baddr); baddr += 4; } #endif } #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 /* * Write the 1, 2, 4, or 8 byte value `value' to bus space * described by tag/handle/offset. */ static __inline void bus_space_write_1(bus_space_tag_t tag, bus_space_handle_t bsh, bus_size_t offset, u_int8_t value); static __inline void bus_space_write_2(bus_space_tag_t tag, bus_space_handle_t bsh, bus_size_t offset, u_int16_t value); static __inline void bus_space_write_4(bus_space_tag_t tag, bus_space_handle_t bsh, bus_size_t offset, u_int32_t value); static __inline void bus_space_write_1(bus_space_tag_t tag, bus_space_handle_t bsh, bus_size_t offset, u_int8_t value) { #if defined(_ALPHA_BUS_PIO_H_) #if defined(_ALPHA_BUS_MEMIO_H_) if (tag == ALPHA_BUS_SPACE_IO) #endif outb(bsh + offset, value); #endif #if defined(_ALPHA_BUS_MEMIO_H_) #if defined(_ALPHA_BUS_PIO_H_) else #endif writeb(bsh + offset, value); #endif } static __inline void bus_space_write_2(bus_space_tag_t tag, bus_space_handle_t bsh, bus_size_t offset, u_int16_t value) { #if defined(_ALPHA_BUS_PIO_H_) #if defined(_ALPHA_BUS_MEMIO_H_) if (tag == ALPHA_BUS_SPACE_IO) #endif outw(bsh + offset, value); #endif #if defined(_ALPHA_BUS_MEMIO_H_) #if defined(_ALPHA_BUS_PIO_H_) else #endif writew(bsh + offset, value); #endif } static __inline void bus_space_write_4(bus_space_tag_t tag, bus_space_handle_t bsh, bus_size_t offset, u_int32_t value) { #if defined(_ALPHA_BUS_PIO_H_) #if defined(_ALPHA_BUS_MEMIO_H_) if (tag == ALPHA_BUS_SPACE_IO) #endif outl(bsh + offset, value); #endif #if defined(_ALPHA_BUS_MEMIO_H_) #if defined(_ALPHA_BUS_PIO_H_) else #endif writel(bsh + offset, value); #endif } #if 0 /* Cause a link error for bus_space_write_8 */ #define bus_space_write_8 !!! bus_space_write_8 not implemented !!! #endif /* * Write `count' 1, 2, 4, or 8 byte quantities from the buffer * provided to bus space described by tag/handle/offset. */ static __inline void bus_space_write_multi_1(bus_space_tag_t tag, bus_space_handle_t bsh, bus_size_t offset, const u_int8_t *addr, size_t count); static __inline void bus_space_write_multi_2(bus_space_tag_t tag, bus_space_handle_t bsh, bus_size_t offset, const u_int16_t *addr, size_t count); static __inline void bus_space_write_multi_4(bus_space_tag_t tag, bus_space_handle_t bsh, bus_size_t offset, const u_int32_t *addr, size_t count); static __inline void bus_space_write_multi_1(bus_space_tag_t tag, bus_space_handle_t bsh, bus_size_t offset, const u_int8_t *addr, size_t count) { bus_addr_t baddr = bsh + offset; #if defined(_ALPHA_BUS_PIO_H_) #if defined(_ALPHA_BUS_MEMIO_H_) if (tag == ALPHA_BUS_SPACE_IO) #endif while (count--) outb(baddr, *addr++); #endif #if defined(_ALPHA_BUS_MEMIO_H_) #if defined(_ALPHA_BUS_PIO_H_) else #endif while (count--) writeb(baddr, *addr++); #endif } static __inline void bus_space_write_multi_2(bus_space_tag_t tag, bus_space_handle_t bsh, bus_size_t offset, const u_int16_t *addr, size_t count) { bus_addr_t baddr = bsh + offset; #if defined(_ALPHA_BUS_PIO_H_) #if defined(_ALPHA_BUS_MEMIO_H_) if (tag == ALPHA_BUS_SPACE_IO) #endif while (count--) outw(baddr, *addr++); #endif #if defined(_ALPHA_BUS_MEMIO_H_) #if defined(_ALPHA_BUS_PIO_H_) else #endif while (count--) writew(baddr, *addr++); #endif } static __inline void bus_space_write_multi_4(bus_space_tag_t tag, bus_space_handle_t bsh, bus_size_t offset, const u_int32_t *addr, size_t count) { bus_addr_t baddr = bsh + offset; #if defined(_ALPHA_BUS_PIO_H_) #if defined(_ALPHA_BUS_MEMIO_H_) if (tag == ALPHA_BUS_SPACE_IO) #endif while (count--) outl(baddr, *addr++); #endif #if defined(_ALPHA_BUS_MEMIO_H_) #if defined(_ALPHA_BUS_PIO_H_) else #endif while (count--) writel(baddr, *addr++); #endif } #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 unimplemented !!! #endif /* * Write `count' 1, 2, 4, or 8 byte quantities from the buffer provided * to bus space described by tag/handle starting at `offset'. */ static __inline void bus_space_write_region_1(bus_space_tag_t tag, bus_space_handle_t bsh, bus_size_t offset, const u_int8_t *addr, size_t count); static __inline void bus_space_write_region_2(bus_space_tag_t tag, bus_space_handle_t bsh, bus_size_t offset, const u_int16_t *addr, size_t count); static __inline void bus_space_write_region_4(bus_space_tag_t tag, bus_space_handle_t bsh, bus_size_t offset, const u_int32_t *addr, size_t count); static __inline void bus_space_write_region_1(bus_space_tag_t tag, bus_space_handle_t bsh, bus_size_t offset, const u_int8_t *addr, size_t count) { bus_addr_t baddr = bsh + offset; #if defined(_ALPHA_BUS_PIO_H_) #if defined(_ALPHA_BUS_MEMIO_H_) if (tag == ALPHA_BUS_SPACE_IO) #endif while (count--) { outb(baddr, *addr++); baddr += 1; } #endif #if defined(_ALPHA_BUS_MEMIO_H_) #if defined(_ALPHA_BUS_PIO_H_) else #endif while (count--) { writeb(baddr, *addr++); baddr += 1; } #endif } static __inline void bus_space_write_region_2(bus_space_tag_t tag, bus_space_handle_t bsh, bus_size_t offset, const u_int16_t *addr, size_t count) { bus_addr_t baddr = bsh + offset; #if defined(_ALPHA_BUS_PIO_H_) #if defined(_ALPHA_BUS_MEMIO_H_) if (tag == ALPHA_BUS_SPACE_IO) #endif while (count--) { outw(baddr, *addr++); baddr += 2; } #endif #if defined(_ALPHA_BUS_MEMIO_H_) #if defined(_ALPHA_BUS_PIO_H_) else #endif while (count--) { writew(baddr, *addr++); baddr += 2; } #endif } static __inline void bus_space_write_region_4(bus_space_tag_t tag, bus_space_handle_t bsh, bus_size_t offset, const u_int32_t *addr, size_t count) { bus_addr_t baddr = bsh + offset; #if defined(_ALPHA_BUS_PIO_H_) #if defined(_ALPHA_BUS_MEMIO_H_) if (tag == ALPHA_BUS_SPACE_IO) #endif while (count--) { outl(baddr, *addr++); baddr += 4; } #endif #if defined(_ALPHA_BUS_MEMIO_H_) #if defined(_ALPHA_BUS_PIO_H_) else #endif while (count--) { writel(baddr, *addr++); baddr += 4; } #endif } #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 /* * Write the 1, 2, 4, or 8 byte value `val' to bus space described * by tag/handle/offset `count' times. */ static __inline void bus_space_set_multi_1(bus_space_tag_t tag, bus_space_handle_t bsh, bus_size_t offset, u_int8_t value, size_t count); static __inline void bus_space_set_multi_2(bus_space_tag_t tag, bus_space_handle_t bsh, bus_size_t offset, u_int16_t value, size_t count); static __inline void bus_space_set_multi_4(bus_space_tag_t tag, bus_space_handle_t bsh, bus_size_t offset, u_int32_t value, size_t count); static __inline void bus_space_set_multi_1(bus_space_tag_t tag, bus_space_handle_t bsh, bus_size_t offset, u_int8_t value, size_t count) { bus_addr_t addr = bsh + offset; #if defined(_ALPHA_BUS_PIO_H_) #if defined(_ALPHA_BUS_MEMIO_H_) if (tag == ALPHA_BUS_SPACE_IO) #endif while (count--) outb(addr, value); #endif #if defined(_ALPHA_BUS_MEMIO_H_) #if defined(_ALPHA_BUS_PIO_H_) else #endif while (count--) writeb(addr, value); #endif } static __inline void bus_space_set_multi_2(bus_space_tag_t tag, bus_space_handle_t bsh, bus_size_t offset, u_int16_t value, size_t count) { bus_addr_t addr = bsh + offset; #if defined(_ALPHA_BUS_PIO_H_) #if defined(_ALPHA_BUS_MEMIO_H_) if (tag == ALPHA_BUS_SPACE_IO) #endif while (count--) outw(addr, value); #endif #if defined(_ALPHA_BUS_MEMIO_H_) #if defined(_ALPHA_BUS_PIO_H_) else #endif while (count--) writew(addr, value); #endif } static __inline void bus_space_set_multi_4(bus_space_tag_t tag, bus_space_handle_t bsh, bus_size_t offset, u_int32_t value, size_t count) { bus_addr_t addr = bsh + offset; #if defined(_ALPHA_BUS_PIO_H_) #if defined(_ALPHA_BUS_MEMIO_H_) if (tag == ALPHA_BUS_SPACE_IO) #endif while (count--) outl(addr, value); #endif #if defined(_ALPHA_BUS_MEMIO_H_) #if defined(_ALPHA_BUS_PIO_H_) else #endif while (count--) writel(addr, value); #endif } #if 0 /* Cause a link error for bus_space_set_multi_8 */ #define bus_space_set_multi_8 !!! bus_space_set_multi_8 unimplemented !!! #endif /* * Write `count' 1, 2, 4, or 8 byte value `val' to bus space described * by tag/handle starting at `offset'. */ static __inline void bus_space_set_region_1(bus_space_tag_t tag, bus_space_handle_t bsh, bus_size_t offset, u_int8_t value, size_t count); static __inline void bus_space_set_region_2(bus_space_tag_t tag, bus_space_handle_t bsh, bus_size_t offset, u_int16_t value, size_t count); static __inline void bus_space_set_region_4(bus_space_tag_t tag, bus_space_handle_t bsh, bus_size_t offset, u_int32_t value, size_t count); static __inline void bus_space_set_region_1(bus_space_tag_t tag, bus_space_handle_t bsh, bus_size_t offset, u_int8_t value, size_t count) { bus_addr_t addr = bsh + offset; #if defined(_ALPHA_BUS_PIO_H_) #if defined(_ALPHA_BUS_MEMIO_H_) if (tag == ALPHA_BUS_SPACE_IO) #endif for (; count != 0; count--, addr++) outb(addr, value); #endif #if defined(_ALPHA_BUS_MEMIO_H_) #if defined(_ALPHA_BUS_PIO_H_) else #endif for (; count != 0; count--, addr++) writeb(addr, value); #endif } static __inline void bus_space_set_region_2(bus_space_tag_t tag, bus_space_handle_t bsh, bus_size_t offset, u_int16_t value, size_t count) { bus_addr_t addr = bsh + offset; #if defined(_ALPHA_BUS_PIO_H_) #if defined(_ALPHA_BUS_MEMIO_H_) if (tag == ALPHA_BUS_SPACE_IO) #endif for (; count != 0; count--, addr += 2) outw(addr, value); #endif #if defined(_ALPHA_BUS_MEMIO_H_) #if defined(_ALPHA_BUS_PIO_H_) else #endif for (; count != 0; count--, addr += 2) writew(addr, value); #endif } static __inline void bus_space_set_region_4(bus_space_tag_t tag, bus_space_handle_t bsh, bus_size_t offset, u_int32_t value, size_t count) { bus_addr_t addr = bsh + offset; #if defined(_ALPHA_BUS_PIO_H_) #if defined(_ALPHA_BUS_MEMIO_H_) if (tag == ALPHA_BUS_SPACE_IO) #endif for (; count != 0; count--, addr += 4) outl(addr, value); #endif #if defined(_ALPHA_BUS_MEMIO_H_) #if defined(_ALPHA_BUS_PIO_H_) else #endif for (; count != 0; count--, addr += 4) writel(addr, value); #endif } #if 0 /* Cause a link error for bus_space_set_region_8 */ #define bus_space_set_region_8 !!! bus_space_set_region_8 unimplemented !!! #endif /* * 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. */ static __inline void bus_space_copy_region_1(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); static __inline void bus_space_copy_region_2(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); static __inline void bus_space_copy_region_4(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); static __inline void bus_space_copy_region_1(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) { bus_addr_t addr1 = bsh1 + off1; bus_addr_t addr2 = bsh2 + off2; #if defined(_ALPHA_BUS_PIO_H_) #if defined(_ALPHA_BUS_MEMIO_H_) if (tag == ALPHA_BUS_SPACE_IO) #endif { if (addr1 >= addr2) { /* src after dest: copy forward */ for (; count != 0; count--, addr1++, addr2++) outb(addr2, inb(addr1)); } else { /* dest after src: copy backwards */ for (addr1 += (count - 1), addr2 += (count - 1); count != 0; count--, addr1--, addr2--) outb(addr2, inb(addr1)); } } #endif #if defined(_ALPHA_BUS_MEMIO_H_) #if defined(_ALPHA_BUS_PIO_H_) else #endif { if (addr1 >= addr2) { /* src after dest: copy forward */ for (; count != 0; count--, addr1++, addr2++) writeb(addr2, readb(addr1)); } else { /* dest after src: copy backwards */ for (addr1 += (count - 1), addr2 += (count - 1); count != 0; count--, addr1--, addr2--) writeb(addr2, readb(addr1)); } } #endif } static __inline void bus_space_copy_region_2(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) { bus_addr_t addr1 = bsh1 + off1; bus_addr_t addr2 = bsh2 + off2; #if defined(_ALPHA_BUS_PIO_H_) #if defined(_ALPHA_BUS_MEMIO_H_) if (tag == ALPHA_BUS_SPACE_IO) #endif { if (addr1 >= addr2) { /* src after dest: copy forward */ for (; count != 0; count--, addr1 += 2, addr2 += 2) outw(addr2, inw(addr1)); } else { /* dest after src: copy backwards */ for (addr1 += 2 * (count - 1), addr2 += 2 * (count - 1); count != 0; count--, addr1 -= 2, addr2 -= 2) outw(addr2, inw(addr1)); } } #endif #if defined(_ALPHA_BUS_MEMIO_H_) #if defined(_ALPHA_BUS_PIO_H_) else #endif { if (addr1 >= addr2) { /* src after dest: copy forward */ for (; count != 0; count--, addr1 += 2, addr2 += 2) writew(addr2, readw(addr1)); } else { /* dest after src: copy backwards */ for (addr1 += 2 * (count - 1), addr2 += 2 * (count - 1); count != 0; count--, addr1 -= 2, addr2 -= 2) writew(addr2, readw(addr1)); } } #endif } static __inline void bus_space_copy_region_4(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) { bus_addr_t addr1 = bsh1 + off1; bus_addr_t addr2 = bsh2 + off2; #if defined(_ALPHA_BUS_PIO_H_) #if defined(_ALPHA_BUS_MEMIO_H_) if (tag == ALPHA_BUS_SPACE_IO) #endif { if (addr1 >= addr2) { /* src after dest: copy forward */ for (; count != 0; count--, addr1 += 4, addr2 += 4) outl(addr2, inl(addr1)); } else { /* dest after src: copy backwards */ for (addr1 += 4 * (count - 1), addr2 += 4 * (count - 1); count != 0; count--, addr1 -= 4, addr2 -= 4) outl(addr2, inl(addr1)); } } #endif #if defined(_ALPHA_BUS_MEMIO_H_) #if defined(_ALPHA_BUS_PIO_H_) else #endif { if (addr1 >= addr2) { /* src after dest: copy forward */ for (; count != 0; count--, addr1 += 4, addr2 += 4) writel(addr2, readl(addr1)); } else { /* dest after src: copy backwards */ for (addr1 += 4 * (count - 1), addr2 += 4 * (count - 1); count != 0; count--, addr1 -= 4, addr2 -= 4) writel(addr2, readl(addr1)); } } #endif } #endif /* defined(_ALPHA_BUS_PIO_H_) || defined(_ALPHA_MEM_IO_H_) */ #if 0 /* Cause a link error for bus_space_copy_8 */ #define bus_space_copy_region_8 !!! bus_space_copy_region_8 unimplemented !!! #endif /* * Bus read/write barrier methods. * * void bus_space_barrier(bus_space_tag_t tag, bus_space_handle_t bsh, * bus_size_t offset, bus_size_t len, int flags); * */ #define BUS_SPACE_BARRIER_READ 0x01 /* force read barrier */ #define BUS_SPACE_BARRIER_WRITE 0x02 /* force write barrier */ static __inline void bus_space_barrier(bus_space_tag_t tag, bus_space_handle_t bsh, bus_size_t offset, bus_size_t len, int flags) { if (flags & BUS_SPACE_BARRIER_READ) alpha_mb(); else alpha_wmb(); } /* * Flags used in various bus DMA methods. */ #define BUS_DMA_WAITOK 0x00 /* safe to sleep (pseudo-flag) */ #define BUS_DMA_NOWAIT 0x01 /* not safe to sleep */ #define BUS_DMA_ALLOCNOW 0x02 /* perform resource allocation now */ #define BUS_DMAMEM_NOSYNC 0x04 /* map memory to not require sync */ #define BUS_DMA_ISA 0x10 /* map memory for ISA dma */ #define BUS_DMA_BUS2 0x20 /* placeholders for bus functions... */ #define BUS_DMA_BUS3 0x40 #define BUS_DMA_BUS4 0x80 /* Forwards needed by prototypes below. */ struct mbuf; struct uio; /* * bus_dmasync_op_t * * Operations performed by bus_dmamap_sync(). */ typedef enum { BUS_DMASYNC_PREREAD, BUS_DMASYNC_POSTREAD, BUS_DMASYNC_PREWRITE, BUS_DMASYNC_POSTWRITE } bus_dmasync_op_t; /* * bus_dma_tag_t * * A machine-dependent opaque type describing the characteristics * of how to perform DMA mappings. This structure encapsultes * information concerning address and alignment restrictions, number * of S/G segments, amount of data per S/G segment, etc. */ typedef struct bus_dma_tag *bus_dma_tag_t; /* * bus_dmamap_t * * DMA mapping instance information. */ typedef struct bus_dmamap *bus_dmamap_t; /* * bus_dma_segment_t * * Describes a single contiguous DMA transaction. Values * are suitable for programming into DMA registers. */ typedef struct bus_dma_segment { bus_addr_t ds_addr; /* DMA address */ bus_size_t ds_len; /* length of transfer */ } bus_dma_segment_t; /* * A function that returns 1 if the address cannot be accessed by * a device and 0 if it can be. */ typedef int bus_dma_filter_t(void *, bus_addr_t); /* * Allocate a device specific dma_tag encapsulating the constraints of * the parent tag in addition to other restrictions specified: * * alignment: alignment for segments. * boundary: Boundary that segments cannot cross. * lowaddr: Low restricted address that cannot appear in a mapping. * highaddr: High restricted address that cannot appear in a mapping. * filtfunc: An optional function to further test if an address * within the range of lowaddr and highaddr cannot appear * in a mapping. * filtfuncarg: An argument that will be passed to filtfunc in addition * to the address to test. * maxsize: Maximum mapping size supported by this tag. * nsegments: Number of discontinuities allowed in maps. * maxsegsz: Maximum size of a segment in the map. * flags: Bus DMA flags. * dmat: A pointer to set to a valid dma tag should the return * value of this function indicate success. */ /* XXX Should probably allow specification of alignment */ int bus_dma_tag_create(bus_dma_tag_t parent, bus_size_t alignemnt, bus_size_t boundary, bus_addr_t lowaddr, bus_addr_t highaddr, bus_dma_filter_t *filtfunc, void *filtfuncarg, bus_size_t maxsize, int nsegments, bus_size_t maxsegsz, int flags, bus_dma_tag_t *dmat); int bus_dma_tag_destroy(bus_dma_tag_t dmat); /* * Allocate a handle for mapping from kva/uva/physical * address space into bus device space. */ int bus_dmamap_create(bus_dma_tag_t dmat, int flags, bus_dmamap_t *mapp); /* * Destroy a handle for mapping from kva/uva/physical * address space into bus device space. */ int bus_dmamap_destroy(bus_dma_tag_t dmat, bus_dmamap_t map); /* * Allocate a piece of memory that can be efficiently mapped into * bus device space based on the constraints lited in the dma tag. * A dmamap to for use with dmamap_load is also allocated. */ int bus_dmamem_alloc(bus_dma_tag_t dmat, void** vaddr, int flags, bus_dmamap_t *mapp); /* * Free a piece of memory and it's allociated dmamap, that was allocated * via bus_dmamem_alloc. */ void bus_dmamem_free(bus_dma_tag_t dmat, void *vaddr, bus_dmamap_t map); /* * A function that processes a successfully loaded dma map or an error * from a delayed load map. */ typedef void bus_dmamap_callback_t(void *, bus_dma_segment_t *, int, int); /* * Map the buffer buf into bus space using the dmamap map. */ int bus_dmamap_load(bus_dma_tag_t dmat, bus_dmamap_t map, void *buf, bus_size_t buflen, bus_dmamap_callback_t *callback, void *callback_arg, int flags); /* * Perform a syncronization operation on the given map. */ void _bus_dmamap_sync(bus_dma_tag_t, bus_dmamap_t, bus_dmasync_op_t); #define bus_dmamap_sync(dmat, dmamap, op) \ if ((dmamap) != NULL) \ _bus_dmamap_sync(dmat, dmamap, op) /* * Release the mapping held by map. */ void _bus_dmamap_unload(bus_dma_tag_t dmat, bus_dmamap_t map); #define bus_dmamap_unload(dmat, dmamap) \ if ((dmamap) != NULL) \ _bus_dmamap_unload(dmat, dmamap) #endif /* _ALPHA_BUS_H_ */