/* $NetBSD: bus_space.c,v 1.19 2012/01/27 18:52:57 para Exp $ */ /*- * Copyright (c) 2001, 2002 The NetBSD Foundation, Inc. * 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. * * 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. */ #include __KERNEL_RCSID(0, "$NetBSD: bus_space.c,v 1.19 2012/01/27 18:52:57 para Exp $"); #include "debug_hpcsh.h" #include #include #include #include #include /* bus.h turn on BUS_SPACE_DEBUG if the global DEBUG option is enabled. */ #ifdef BUS_SPACE_DEBUG #define DPRINTF_ENABLE #define DPRINTF_DEBUG bus_space_debug #endif #include #include #define _BUS_SPACE_ACCESS_HOOK() ((void)0) _BUS_SPACE_READ(_bus_space, 1, 8) _BUS_SPACE_READ(_bus_space, 2, 16) _BUS_SPACE_READ(_bus_space, 4, 32) _BUS_SPACE_READ(_bus_space, 8, 64) _BUS_SPACE_READ_MULTI(_bus_space, 1, 8) _BUS_SPACE_READ_MULTI(_bus_space, 2, 16) _BUS_SPACE_READ_MULTI(_bus_space, 4, 32) _BUS_SPACE_READ_MULTI(_bus_space, 8, 64) _BUS_SPACE_READ_REGION(_bus_space, 1, 8) _BUS_SPACE_READ_REGION(_bus_space, 2, 16) _BUS_SPACE_READ_REGION(_bus_space, 4, 32) _BUS_SPACE_READ_REGION(_bus_space, 8, 64) _BUS_SPACE_WRITE(_bus_space, 1, 8) _BUS_SPACE_WRITE(_bus_space, 2, 16) _BUS_SPACE_WRITE(_bus_space, 4, 32) _BUS_SPACE_WRITE(_bus_space, 8, 64) _BUS_SPACE_WRITE_MULTI(_bus_space, 1, 8) _BUS_SPACE_WRITE_MULTI(_bus_space, 2, 16) _BUS_SPACE_WRITE_MULTI(_bus_space, 4, 32) _BUS_SPACE_WRITE_MULTI(_bus_space, 8, 64) _BUS_SPACE_WRITE_REGION(_bus_space, 1, 8) _BUS_SPACE_WRITE_REGION(_bus_space, 2, 16) _BUS_SPACE_WRITE_REGION(_bus_space, 4, 32) _BUS_SPACE_WRITE_REGION(_bus_space, 8, 64) _BUS_SPACE_SET_MULTI(_bus_space, 1, 8) _BUS_SPACE_SET_MULTI(_bus_space, 2, 16) _BUS_SPACE_SET_MULTI(_bus_space, 4, 32) _BUS_SPACE_SET_MULTI(_bus_space, 8, 64) _BUS_SPACE_COPY_REGION(_bus_space, 1, 8) _BUS_SPACE_COPY_REGION(_bus_space, 2, 16) _BUS_SPACE_COPY_REGION(_bus_space, 4, 32) _BUS_SPACE_COPY_REGION(_bus_space, 8, 64) #undef _BUS_SPACE_ACCESS_HOOK static int _bus_space_map(void *, bus_addr_t, bus_size_t, int, bus_space_handle_t *); static void _bus_space_unmap(void *, bus_space_handle_t, bus_size_t); static int _bus_space_subregion(void *, bus_space_handle_t, bus_size_t, bus_size_t, bus_space_handle_t *); static int _bus_space_alloc(void *, bus_addr_t, bus_addr_t, bus_size_t, bus_size_t, bus_size_t, int, bus_addr_t *, bus_space_handle_t *); static void _bus_space_free(void *, bus_space_handle_t, bus_size_t); static void *_bus_space_vaddr(void *, bus_space_handle_t); static struct hpcsh_bus_space __default_bus_space = { .hbs_extent = NULL, .hbs_map = _bus_space_map, .hbs_unmap = _bus_space_unmap, .hbs_subregion = _bus_space_subregion, .hbs_alloc = _bus_space_alloc, .hbs_free = _bus_space_free, .hbs_vaddr = _bus_space_vaddr, .hbs_r_1 = _bus_space_read_1, .hbs_r_2 = _bus_space_read_2, .hbs_r_4 = _bus_space_read_4, .hbs_r_8 = _bus_space_read_8, .hbs_rm_1 = _bus_space_read_multi_1, .hbs_rm_2 = _bus_space_read_multi_2, .hbs_rm_4 = _bus_space_read_multi_4, .hbs_rm_8 = _bus_space_read_multi_8, .hbs_rr_1 = _bus_space_read_region_1, .hbs_rr_2 = _bus_space_read_region_2, .hbs_rr_4 = _bus_space_read_region_4, .hbs_rr_8 = _bus_space_read_region_8, .hbs_w_1 = _bus_space_write_1, .hbs_w_2 = _bus_space_write_2, .hbs_w_4 = _bus_space_write_4, .hbs_w_8 = _bus_space_write_8, .hbs_wm_1 = _bus_space_write_multi_1, .hbs_wm_2 = _bus_space_write_multi_2, .hbs_wm_4 = _bus_space_write_multi_4, .hbs_wm_8 = _bus_space_write_multi_8, .hbs_wr_1 = _bus_space_write_region_1, .hbs_wr_2 = _bus_space_write_region_2, .hbs_wr_4 = _bus_space_write_region_4, .hbs_wr_8 = _bus_space_write_region_8, .hbs_sm_1 = _bus_space_set_multi_1, .hbs_sm_2 = _bus_space_set_multi_2, .hbs_sm_4 = _bus_space_set_multi_4, .hbs_sm_8 = _bus_space_set_multi_8, .hbs_c_1 = _bus_space_copy_region_1, .hbs_c_2 = _bus_space_copy_region_2, .hbs_c_4 = _bus_space_copy_region_4, .hbs_c_8 = _bus_space_copy_region_8 }; /* create default bus_space_tag */ bus_space_tag_t bus_space_create(struct hpcsh_bus_space *hbs, const char *name, bus_addr_t addr, bus_size_t size) { if (hbs == NULL) { hbs = malloc(sizeof(*hbs), M_DEVBUF, M_NOWAIT | M_ZERO); hbs->hbs_flags = HBS_FLAGS_ALLOCATED; } else memset(hbs, 0, sizeof(*hbs)); KASSERT(hbs); /* set default method */ *hbs = __default_bus_space; hbs->hbs_cookie = hbs; /* set access region */ if (size == 0) { hbs->hbs_base_addr = addr; /* no extent */ } else { hbs->hbs_extent = extent_create(name, addr, addr + size - 1, 0, 0, EX_NOWAIT); if (hbs->hbs_extent == NULL) { panic("%s:: unable to create bus_space for " "0x%08lx-%#lx", __func__, addr, size); } } return hbs; } void bus_space_destroy(bus_space_tag_t t) { struct hpcsh_bus_space *hbs = t; struct extent *ex = hbs->hbs_extent; if (ex != NULL) extent_destroy(ex); if (hbs->hbs_flags & HBS_FLAGS_ALLOCATED) free(hbs, M_DEVBUF); } /* default bus_space tag */ static int _bus_space_map(void *t, bus_addr_t bpa, bus_size_t size, int flags, bus_space_handle_t *bshp) { struct hpcsh_bus_space *hbs = t; struct extent *ex = hbs->hbs_extent; int error; if (ex == NULL) { *bshp = (bus_space_handle_t)(bpa + hbs->hbs_base_addr); return (0); } bpa += ex->ex_start; error = extent_alloc_region(ex, bpa, size, EX_NOWAIT | EX_MALLOCOK); if (error) { DPRINTF("failed.\n"); return (error); } *bshp = (bus_space_handle_t)bpa; return (0); } static int _bus_space_subregion(void *t, bus_space_handle_t bsh, bus_size_t offset, bus_size_t size, bus_space_handle_t *nbshp) { *nbshp = bsh + offset; return (0); } static int _bus_space_alloc(void *t, bus_addr_t rstart, bus_addr_t rend, bus_size_t size, bus_size_t alignment, bus_size_t boundary, int flags, bus_addr_t *bpap, bus_space_handle_t *bshp) { struct hpcsh_bus_space *hbs = t; struct extent *ex = hbs->hbs_extent; u_long bpa, base; int error; if (ex == NULL) { *bshp = *bpap = rstart + hbs->hbs_base_addr; return (0); } base = ex->ex_start; error = extent_alloc_subregion(ex, rstart + base, rend + base, size, alignment, boundary, EX_FAST | EX_NOWAIT | EX_MALLOCOK, &bpa); if (error) { DPRINTF("failed. base=0x%08x rstart=0x%08x, rend=0x%08x" " size=0x%08x\n", (uint32_t)base, (uint32_t)rstart, (uint32_t)rend, (uint32_t)size); return (error); } *bshp = (bus_space_handle_t)bpa; if (bpap != NULL) *bpap = bpa; return (0); } static void _bus_space_free(void *t, bus_space_handle_t bsh, bus_size_t size) { struct hpcsh_bus_space *hbs = t; struct extent *ex = hbs->hbs_extent; if (ex != NULL) _bus_space_unmap(t, bsh, size); } static void _bus_space_unmap(void *t, bus_space_handle_t bsh, bus_size_t size) { struct hpcsh_bus_space *hbs = t; struct extent *ex = hbs->hbs_extent; int error; if (ex == NULL) return; error = extent_free(ex, bsh, size, EX_NOWAIT); if (error) { DPRINTF("%#lx-%#lx of %s space lost\n", bsh, bsh + size, ex->ex_name); } } void * _bus_space_vaddr(void *t, bus_space_handle_t h) { return (void *)h; }