/* $OpenBSD: bus.h,v 1.14 2011/03/23 16:54:34 pirofti Exp $ */ /* $NetBSD: bus.h,v 1.12 2003/10/23 15:03:24 scw Exp $ */ /*- * Copyright (c) 1996, 1997, 1998, 2001 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. * * 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. */ #ifndef _ARM_BUS_H_ #define _ARM_BUS_H_ /* * Addresses (in bus space). */ typedef u_long bus_addr_t; typedef u_long bus_size_t; /* * Access methods for bus space. */ typedef struct bus_space *bus_space_tag_t; typedef u_long bus_space_handle_t; /* * int bus_space_map (bus_space_tag_t t, bus_addr_t addr, * bus_size_t size, int flags, bus_space_handle_t *bshp); * * Map a region of bus space. */ #define BUS_SPACE_MAP_CACHEABLE 0x01 #define BUS_SPACE_MAP_LINEAR 0x02 #define BUS_SPACE_MAP_PREFETCHABLE 0x04 struct bus_space { /* cookie */ void *bs_cookie; /* mapping/unmapping */ int (*bs_map) (void *, bus_addr_t, bus_size_t, int, bus_space_handle_t *); void (*bs_unmap) (void *, bus_space_handle_t, bus_size_t); int (*bs_subregion) (void *, bus_space_handle_t, bus_size_t, bus_size_t, bus_space_handle_t *); /* allocation/deallocation */ int (*bs_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 *); void (*bs_free) (void *, bus_space_handle_t, bus_size_t); /* get kernel virtual address */ void * (*bs_vaddr) (void *, bus_space_handle_t); /* mmap bus space for user */ paddr_t (*bs_mmap) (void *, bus_addr_t, off_t, int, int); /* barrier */ void (*bs_barrier) (void *, bus_space_handle_t, bus_size_t, bus_size_t, int); /* read (single) */ u_int8_t (*bs_r_1) (void *, bus_space_handle_t, bus_size_t); u_int16_t (*bs_r_2) (void *, bus_space_handle_t, bus_size_t); u_int32_t (*bs_r_4) (void *, bus_space_handle_t, bus_size_t); u_int64_t (*bs_r_8) (void *, bus_space_handle_t, bus_size_t); /* read multiple */ void (*bs_rm_1) (void *, bus_space_handle_t, bus_size_t, u_int8_t *, bus_size_t); void (*bs_rm_2) (void *, bus_space_handle_t, bus_size_t, u_int16_t *, bus_size_t); void (*bs_rm_4) (void *, bus_space_handle_t, bus_size_t, u_int32_t *, bus_size_t); void (*bs_rm_8) (void *, bus_space_handle_t, bus_size_t, u_int64_t *, bus_size_t); /* read region */ void (*bs_rr_1) (void *, bus_space_handle_t, bus_size_t, u_int8_t *, bus_size_t); void (*bs_rr_2) (void *, bus_space_handle_t, bus_size_t, u_int16_t *, bus_size_t); void (*bs_rr_4) (void *, bus_space_handle_t, bus_size_t, u_int32_t *, bus_size_t); void (*bs_rr_8) (void *, bus_space_handle_t, bus_size_t, u_int64_t *, bus_size_t); /* write (single) */ void (*bs_w_1) (void *, bus_space_handle_t, bus_size_t, u_int8_t); void (*bs_w_2) (void *, bus_space_handle_t, bus_size_t, u_int16_t); void (*bs_w_4) (void *, bus_space_handle_t, bus_size_t, u_int32_t); void (*bs_w_8) (void *, bus_space_handle_t, bus_size_t, u_int64_t); /* write multiple */ void (*bs_wm_1) (void *, bus_space_handle_t, bus_size_t, const u_int8_t *, bus_size_t); void (*bs_wm_2) (void *, bus_space_handle_t, bus_size_t, const u_int16_t *, bus_size_t); void (*bs_wm_4) (void *, bus_space_handle_t, bus_size_t, const u_int32_t *, bus_size_t); void (*bs_wm_8) (void *, bus_space_handle_t, bus_size_t, const u_int64_t *, bus_size_t); /* write region */ void (*bs_wr_1) (void *, bus_space_handle_t, bus_size_t, const u_int8_t *, bus_size_t); void (*bs_wr_2) (void *, bus_space_handle_t, bus_size_t, const u_int16_t *, bus_size_t); void (*bs_wr_4) (void *, bus_space_handle_t, bus_size_t, const u_int32_t *, bus_size_t); void (*bs_wr_8) (void *, bus_space_handle_t, bus_size_t, const u_int64_t *, bus_size_t); /* set multiple */ void (*bs_sm_1) (void *, bus_space_handle_t, bus_size_t, u_int8_t, bus_size_t); void (*bs_sm_2) (void *, bus_space_handle_t, bus_size_t, u_int16_t, bus_size_t); void (*bs_sm_4) (void *, bus_space_handle_t, bus_size_t, u_int32_t, bus_size_t); void (*bs_sm_8) (void *, bus_space_handle_t, bus_size_t, u_int64_t, bus_size_t); /* set region */ void (*bs_sr_1) (void *, bus_space_handle_t, bus_size_t, u_int8_t, bus_size_t); void (*bs_sr_2) (void *, bus_space_handle_t, bus_size_t, u_int16_t, bus_size_t); void (*bs_sr_4) (void *, bus_space_handle_t, bus_size_t, u_int32_t, bus_size_t); void (*bs_sr_8) (void *, bus_space_handle_t, bus_size_t, u_int64_t, bus_size_t); /* copy */ void (*bs_c_1) (void *, bus_space_handle_t, bus_size_t, bus_space_handle_t, bus_size_t, bus_size_t); void (*bs_c_2) (void *, bus_space_handle_t, bus_size_t, bus_space_handle_t, bus_size_t, bus_size_t); void (*bs_c_4) (void *, bus_space_handle_t, bus_size_t, bus_space_handle_t, bus_size_t, bus_size_t); void (*bs_c_8) (void *, bus_space_handle_t, bus_size_t, bus_space_handle_t, bus_size_t, bus_size_t); }; /* * Utility macros; INTERNAL USE ONLY. */ #define __bs_c(a,b) __CONCAT(a,b) #define __bs_opname(op,size) __bs_c(__bs_c(__bs_c(bs_,op),_),size) #define __bs_rs(sz, t, h, o) \ (*(t)->__bs_opname(r,sz))((t)->bs_cookie, h, o) #define __bs_ws(sz, t, h, o, v) \ (*(t)->__bs_opname(w,sz))((t)->bs_cookie, h, o, v) #define __bs_nonsingle(type, sz, t, h, o, a, c) \ (*(t)->__bs_opname(type,sz))((t)->bs_cookie, h, o, a, c) #define __bs_set(type, sz, t, h, o, v, c) \ (*(t)->__bs_opname(type,sz))((t)->bs_cookie, h, o, v, c) #define __bs_copy(sz, t, h1, o1, h2, o2, cnt) \ (*(t)->__bs_opname(c,sz))((t)->bs_cookie, h1, o1, h2, o2, cnt) /* * Mapping and unmapping operations. */ #define bus_space_map(t, a, s, c, hp) \ (*(t)->bs_map)((t)->bs_cookie, (a), (s), (c), (hp)) #define bus_space_unmap(t, h, s) \ (*(t)->bs_unmap)((t)->bs_cookie, (h), (s)) #define bus_space_subregion(t, h, o, s, hp) \ (*(t)->bs_subregion)((t)->bs_cookie, (h), (o), (s), (hp)) /* * Allocation and deallocation operations. */ #define bus_space_alloc(t, rs, re, s, a, b, c, ap, hp) \ (*(t)->bs_alloc)((t)->bs_cookie, (rs), (re), (s), (a), (b), \ (c), (ap), (hp)) #define bus_space_free(t, h, s) \ (*(t)->bs_free)((t)->bs_cookie, (h), (s)) /* * Get kernel virtual address for ranges mapped BUS_SPACE_MAP_LINEAR. */ #define bus_space_vaddr(t, h) \ (*(t)->bs_vaddr)((t)->bs_cookie, (h)) /* * MMap bus space for a user application. */ #define bus_space_mmap(t, a, o, p, f) \ (*(t)->bs_mmap)((t)->bs_cookie, (a), (o), (p), (f)) /* * Bus barrier operations. */ #define bus_space_barrier(t, h, o, l, f) \ (*(t)->bs_barrier)((t)->bs_cookie, (h), (o), (l), (f)) #define BUS_SPACE_BARRIER_READ 0x01 #define BUS_SPACE_BARRIER_WRITE 0x02 /* * Bus read (single) operations. */ #define bus_space_read_1(t, h, o) __bs_rs(1,(t),(h),(o)) #define bus_space_read_2(t, h, o) __bs_rs(2,(t),(h),(o)) #define bus_space_read_4(t, h, o) __bs_rs(4,(t),(h),(o)) #define bus_space_read_8(t, h, o) __bs_rs(8,(t),(h),(o)) /* * Bus read multiple operations. */ #define bus_space_read_multi_1(t, h, o, a, c) \ __bs_nonsingle(rm,1,(t),(h),(o),(a),(c)) #define bus_space_read_multi_2(t, h, o, a, c) \ __bs_nonsingle(rm,2,(t),(h),(o),(a),(c)) #define bus_space_read_multi_4(t, h, o, a, c) \ __bs_nonsingle(rm,4,(t),(h),(o),(a),(c)) #define bus_space_read_multi_8(t, h, o, a, c) \ __bs_nonsingle(rm,8,(t),(h),(o),(a),(c)) /* * Bus read region operations. */ #define bus_space_read_region_1(t, h, o, a, c) \ __bs_nonsingle(rr,1,(t),(h),(o),(a),(c)) #define bus_space_read_region_2(t, h, o, a, c) \ __bs_nonsingle(rr,2,(t),(h),(o),(a),(c)) #define bus_space_read_region_4(t, h, o, a, c) \ __bs_nonsingle(rr,4,(t),(h),(o),(a),(c)) #define bus_space_read_region_8(t, h, o, a, c) \ __bs_nonsingle(rr,8,(t),(h),(o),(a),(c)) /* * Bus write (single) operations. */ #define bus_space_write_1(t, h, o, v) __bs_ws(1,(t),(h),(o),(v)) #define bus_space_write_2(t, h, o, v) __bs_ws(2,(t),(h),(o),(v)) #define bus_space_write_4(t, h, o, v) __bs_ws(4,(t),(h),(o),(v)) #define bus_space_write_8(t, h, o, v) __bs_ws(8,(t),(h),(o),(v)) /* * Bus write multiple operations. */ #define bus_space_write_multi_1(t, h, o, a, c) \ __bs_nonsingle(wm,1,(t),(h),(o),(a),(c)) #define bus_space_write_multi_2(t, h, o, a, c) \ __bs_nonsingle(wm,2,(t),(h),(o),(a),(c)) #define bus_space_write_multi_4(t, h, o, a, c) \ __bs_nonsingle(wm,4,(t),(h),(o),(a),(c)) #define bus_space_write_multi_8(t, h, o, a, c) \ __bs_nonsingle(wm,8,(t),(h),(o),(a),(c)) /* * Bus write region operations. */ #define bus_space_write_region_1(t, h, o, a, c) \ __bs_nonsingle(wr,1,(t),(h),(o),(a),(c)) #define bus_space_write_region_2(t, h, o, a, c) \ __bs_nonsingle(wr,2,(t),(h),(o),(a),(c)) #define bus_space_write_region_4(t, h, o, a, c) \ __bs_nonsingle(wr,4,(t),(h),(o),(a),(c)) #define bus_space_write_region_8(t, h, o, a, c) \ __bs_nonsingle(wr,8,(t),(h),(o),(a),(c)) /* * Set multiple operations. */ #define bus_space_set_multi_1(t, h, o, v, c) \ __bs_set(sm,1,(t),(h),(o),(v),(c)) #define bus_space_set_multi_2(t, h, o, v, c) \ __bs_set(sm,2,(t),(h),(o),(v),(c)) #define bus_space_set_multi_4(t, h, o, v, c) \ __bs_set(sm,4,(t),(h),(o),(v),(c)) #define bus_space_set_multi_8(t, h, o, v, c) \ __bs_set(sm,8,(t),(h),(o),(v),(c)) /* * Set region operations. */ #define bus_space_set_region_1(t, h, o, v, c) \ __bs_set(sr,1,(t),(h),(o),(v),(c)) #define bus_space_set_region_2(t, h, o, v, c) \ __bs_set(sr,2,(t),(h),(o),(v),(c)) #define bus_space_set_region_4(t, h, o, v, c) \ __bs_set(sr,4,(t),(h),(o),(v),(c)) #define bus_space_set_region_8(t, h, o, v, c) \ __bs_set(sr,8,(t),(h),(o),(v),(c)) /* * Copy operations. */ #define bus_space_copy_1(t, h1, o1, h2, o2, c) \ __bs_copy(1, t, h1, o1, h2, o2, c) #define bus_space_copy_2(t, h1, o1, h2, o2, c) \ __bs_copy(2, t, h1, o1, h2, o2, c) #define bus_space_copy_4(t, h1, o1, h2, o2, c) \ __bs_copy(4, t, h1, o1, h2, o2, c) #define bus_space_copy_8(t, h1, o1, h2, o2, c) \ __bs_copy(8, t, h1, o1, h2, o2, c) /* * Macros to provide prototypes for all the functions used in the * bus_space structure */ #define bs_map_proto(f) \ int __bs_c(f,_bs_map) (void *t, bus_addr_t addr, \ bus_size_t size, int flags, bus_space_handle_t *bshp); #define bs_unmap_proto(f) \ void __bs_c(f,_bs_unmap) (void *t, bus_space_handle_t bsh, \ bus_size_t size); #define bs_subregion_proto(f) \ int __bs_c(f,_bs_subregion) (void *t, bus_space_handle_t bsh, \ bus_size_t offset, bus_size_t size, \ bus_space_handle_t *nbshp); #define bs_alloc_proto(f) \ int __bs_c(f,_bs_alloc) (void *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); #define bs_free_proto(f) \ void __bs_c(f,_bs_free) (void *t, bus_space_handle_t bsh, \ bus_size_t size); #define bs_vaddr_proto(f) \ void * __bs_c(f,_bs_vaddr) (void *t, bus_space_handle_t bsh); #define bs_mmap_proto(f) \ paddr_t __bs_c(f,_bs_mmap) (void *, bus_addr_t, off_t, int, int); #define bs_barrier_proto(f) \ void __bs_c(f,_bs_barrier) (void *t, bus_space_handle_t bsh, \ bus_size_t offset, bus_size_t len, int flags); #define bs_r_1_proto(f) \ u_int8_t __bs_c(f,_bs_r_1) (void *t, bus_space_handle_t bsh, \ bus_size_t offset); #define bs_r_2_proto(f) \ u_int16_t __bs_c(f,_bs_r_2) (void *t, bus_space_handle_t bsh, \ bus_size_t offset); #define bs_r_4_proto(f) \ u_int32_t __bs_c(f,_bs_r_4) (void *t, bus_space_handle_t bsh, \ bus_size_t offset); #define bs_r_8_proto(f) \ u_int64_t __bs_c(f,_bs_r_8) (void *t, bus_space_handle_t bsh, \ bus_size_t offset); #define bs_w_1_proto(f) \ void __bs_c(f,_bs_w_1) (void *t, bus_space_handle_t bsh, \ bus_size_t offset, u_int8_t value); #define bs_w_2_proto(f) \ void __bs_c(f,_bs_w_2) (void *t, bus_space_handle_t bsh, \ bus_size_t offset, u_int16_t value); #define bs_w_4_proto(f) \ void __bs_c(f,_bs_w_4) (void *t, bus_space_handle_t bsh, \ bus_size_t offset, u_int32_t value); #define bs_w_8_proto(f) \ void __bs_c(f,_bs_w_8) (void *t, bus_space_handle_t bsh, \ bus_size_t offset, u_int64_t value); #define bs_rm_1_proto(f) \ void __bs_c(f,_bs_rm_1) (void *t, bus_space_handle_t bsh, \ bus_size_t offset, u_int8_t *addr, bus_size_t count); #define bs_rm_2_proto(f) \ void __bs_c(f,_bs_rm_2) (void *t, bus_space_handle_t bsh, \ bus_size_t offset, u_int16_t *addr, bus_size_t count); #define bs_rm_4_proto(f) \ void __bs_c(f,_bs_rm_4) (void *t, bus_space_handle_t bsh, \ bus_size_t offset, u_int32_t *addr, bus_size_t count); #define bs_rm_8_proto(f) \ void __bs_c(f,_bs_rm_8) (void *t, bus_space_handle_t bsh, \ bus_size_t offset, u_int64_t *addr, bus_size_t count); #define bs_wm_1_proto(f) \ void __bs_c(f,_bs_wm_1) (void *t, bus_space_handle_t bsh, \ bus_size_t offset, const u_int8_t *addr, bus_size_t count); #define bs_wm_2_proto(f) \ void __bs_c(f,_bs_wm_2) (void *t, bus_space_handle_t bsh, \ bus_size_t offset, const u_int16_t *addr, bus_size_t count); #define bs_wm_4_proto(f) \ void __bs_c(f,_bs_wm_4) (void *t, bus_space_handle_t bsh, \ bus_size_t offset, const u_int32_t *addr, bus_size_t count); #define bs_wm_8_proto(f) \ void __bs_c(f,_bs_wm_8) (void *t, bus_space_handle_t bsh, \ bus_size_t offset, const u_int64_t *addr, bus_size_t count); #define bs_rr_1_proto(f) \ void __bs_c(f, _bs_rr_1) (void *t, bus_space_handle_t bsh, \ bus_size_t offset, u_int8_t *addr, bus_size_t count); #define bs_rr_2_proto(f) \ void __bs_c(f, _bs_rr_2) (void *t, bus_space_handle_t bsh, \ bus_size_t offset, u_int16_t *addr, bus_size_t count); #define bs_rr_4_proto(f) \ void __bs_c(f, _bs_rr_4) (void *t, bus_space_handle_t bsh, \ bus_size_t offset, u_int32_t *addr, bus_size_t count); #define bs_rr_8_proto(f) \ void __bs_c(f, _bs_rr_8) (void *t, bus_space_handle_t bsh, \ bus_size_t offset, u_int64_t *addr, bus_size_t count); #define bs_wr_1_proto(f) \ void __bs_c(f, _bs_wr_1) (void *t, bus_space_handle_t bsh, \ bus_size_t offset, const u_int8_t *addr, bus_size_t count); #define bs_wr_2_proto(f) \ void __bs_c(f, _bs_wr_2) (void *t, bus_space_handle_t bsh, \ bus_size_t offset, const u_int16_t *addr, bus_size_t count); #define bs_wr_4_proto(f) \ void __bs_c(f, _bs_wr_4) (void *t, bus_space_handle_t bsh, \ bus_size_t offset, const u_int32_t *addr, bus_size_t count); #define bs_wr_8_proto(f) \ void __bs_c(f, _bs_wr_8) (void *t, bus_space_handle_t bsh, \ bus_size_t offset, const u_int64_t *addr, bus_size_t count); #define bs_sm_1_proto(f) \ void __bs_c(f,_bs_sm_1) (void *t, bus_space_handle_t bsh, \ bus_size_t offset, u_int8_t value, bus_size_t count); #define bs_sm_2_proto(f) \ void __bs_c(f,_bs_sm_2) (void *t, bus_space_handle_t bsh, \ bus_size_t offset, u_int16_t value, bus_size_t count); #define bs_sm_4_proto(f) \ void __bs_c(f,_bs_sm_4) (void *t, bus_space_handle_t bsh, \ bus_size_t offset, u_int32_t value, bus_size_t count); #define bs_sm_8_proto(f) \ void __bs_c(f,_bs_sm_8) (void *t, bus_space_handle_t bsh, \ bus_size_t offset, u_int64_t value, bus_size_t count); #define bs_sr_1_proto(f) \ void __bs_c(f,_bs_sr_1) (void *t, bus_space_handle_t bsh, \ bus_size_t offset, u_int8_t value, bus_size_t count); #define bs_sr_2_proto(f) \ void __bs_c(f,_bs_sr_2) (void *t, bus_space_handle_t bsh, \ bus_size_t offset, u_int16_t value, bus_size_t count); #define bs_sr_4_proto(f) \ void __bs_c(f,_bs_sr_4) (void *t, bus_space_handle_t bsh, \ bus_size_t offset, u_int32_t value, bus_size_t count); #define bs_sr_8_proto(f) \ void __bs_c(f,_bs_sr_8) (void *t, bus_space_handle_t bsh, \ bus_size_t offset, u_int64_t value, bus_size_t count); #define bs_c_1_proto(f) \ void __bs_c(f,_bs_c_1) (void *t, bus_space_handle_t bsh1, \ bus_size_t offset1, bus_space_handle_t bsh2, \ bus_size_t offset2, bus_size_t count); #define bs_c_2_proto(f) \ void __bs_c(f,_bs_c_2) (void *t, bus_space_handle_t bsh1, \ bus_size_t offset1, bus_space_handle_t bsh2, \ bus_size_t offset2, bus_size_t count); #define bs_c_4_proto(f) \ void __bs_c(f,_bs_c_4) (void *t, bus_space_handle_t bsh1, \ bus_size_t offset1, bus_space_handle_t bsh2, \ bus_size_t offset2, bus_size_t count); #define bs_c_8_proto(f) \ void __bs_c(f,_bs_c_8) (void *t, bus_space_handle_t bsh1, \ bus_size_t offset1, bus_space_handle_t bsh2, \ bus_size_t offset2, bus_size_t count); #define bs_protos(f) \ bs_map_proto(f); \ bs_unmap_proto(f); \ bs_subregion_proto(f); \ bs_alloc_proto(f); \ bs_free_proto(f); \ bs_vaddr_proto(f); \ bs_mmap_proto(f); \ bs_barrier_proto(f); \ bs_r_1_proto(f); \ bs_r_2_proto(f); \ bs_r_4_proto(f); \ bs_r_8_proto(f); \ bs_w_1_proto(f); \ bs_w_2_proto(f); \ bs_w_4_proto(f); \ bs_w_8_proto(f); \ bs_rm_1_proto(f); \ bs_rm_2_proto(f); \ bs_rm_4_proto(f); \ bs_rm_8_proto(f); \ bs_wm_1_proto(f); \ bs_wm_2_proto(f); \ bs_wm_4_proto(f); \ bs_wm_8_proto(f); \ bs_rr_1_proto(f); \ bs_rr_2_proto(f); \ bs_rr_4_proto(f); \ bs_rr_8_proto(f); \ bs_wr_1_proto(f); \ bs_wr_2_proto(f); \ bs_wr_4_proto(f); \ bs_wr_8_proto(f); \ bs_sm_1_proto(f); \ bs_sm_2_proto(f); \ bs_sm_4_proto(f); \ bs_sm_8_proto(f); \ bs_sr_1_proto(f); \ bs_sr_2_proto(f); \ bs_sr_4_proto(f); \ bs_sr_8_proto(f); \ bs_c_1_proto(f); \ bs_c_2_proto(f); \ bs_c_4_proto(f); \ bs_c_8_proto(f); /* Bus Space DMA macros */ /* * Flags used in various bus DMA methods. */ #define BUS_DMA_WAITOK 0x000 /* safe to sleep (pseudo-flag) */ #define BUS_DMA_NOWAIT 0x001 /* not safe to sleep */ #define BUS_DMA_ALLOCNOW 0x002 /* perform resource allocation now */ #define BUS_DMA_COHERENT 0x004 /* hint: map memory DMA coherent */ #define BUS_DMA_STREAMING 0x008 /* hint: sequential, unidirectional */ #define BUS_DMA_BUS1 0x010 /* placeholders for bus functions... */ #define BUS_DMA_BUS2 0x020 #define BUS_DMA_BUS3 0x040 #define BUS_DMA_BUS4 0x080 #define BUS_DMA_READ 0x100 /* mapping is device -> memory only */ #define BUS_DMA_WRITE 0x200 /* mapping is memory -> device only */ #define BUS_DMA_NOCACHE 0x400 /* hint: map non-cached memory */ #define BUS_DMA_ZERO 0x800 /* dmamem_alloc returns zeroed mem */ /* * Private flags stored in the DMA map. */ #define ARM32_DMAMAP_COHERENT 0x10000 /* no cache flush necessary on sync */ /* Forwards needed by prototypes below. */ struct mbuf; struct uio; /* * Operations performed by bus_dmamap_sync(). */ #define BUS_DMASYNC_PREREAD 0x01 /* pre-read synchronization */ #define BUS_DMASYNC_POSTREAD 0x02 /* post-read synchronization */ #define BUS_DMASYNC_PREWRITE 0x04 /* pre-write synchronization */ #define BUS_DMASYNC_POSTWRITE 0x08 /* post-write synchronization */ typedef struct arm32_bus_dma_tag *bus_dma_tag_t; typedef struct arm32_bus_dmamap *bus_dmamap_t; #define BUS_DMA_TAG_VALID(t) ((t) != (bus_dma_tag_t)0) /* * bus_dma_segment_t * * Describes a single contiguous DMA transaction. Values * are suitable for programming into DMA registers. */ struct arm32_bus_dma_segment { /* * PUBLIC MEMBERS: these are used by machine-independent code. */ bus_addr_t ds_addr; /* DMA address */ bus_size_t ds_len; /* length of transfer */ /* * PRIVATE MEMBERS: not for use by machine-independent code. */ bus_addr_t _ds_vaddr; /* Virtual mapped address * Used by bus_dmamem_sync() */ }; typedef struct arm32_bus_dma_segment bus_dma_segment_t; /* * arm32_dma_range * * This structure describes a valid DMA range. */ struct arm32_dma_range { bus_addr_t dr_sysbase; /* system base address */ bus_addr_t dr_busbase; /* appears here on bus */ bus_size_t dr_len; /* length of range */ }; /* * bus_dma_tag_t * * A machine-dependent opaque type describing the implementation of * DMA for a given bus. */ struct arm32_bus_dma_tag { /* * DMA range for this tag. If the page doesn't fall within * one of these ranges, an error is returned. The caller * may then decide what to do with the transfer. If the * range pointer is NULL, it is ignored. */ struct arm32_dma_range *_ranges; int _nranges; /* * Opaque cookie for use by back-end. */ void *_cookie; /* * DMA mapping methods. */ int (*_dmamap_create) (bus_dma_tag_t, bus_size_t, int, bus_size_t, bus_size_t, int, bus_dmamap_t *); void (*_dmamap_destroy) (bus_dma_tag_t, bus_dmamap_t); int (*_dmamap_load) (bus_dma_tag_t, bus_dmamap_t, void *, bus_size_t, struct proc *, int); int (*_dmamap_load_mbuf) (bus_dma_tag_t, bus_dmamap_t, struct mbuf *, int); int (*_dmamap_load_uio) (bus_dma_tag_t, bus_dmamap_t, struct uio *, int); int (*_dmamap_load_raw) (bus_dma_tag_t, bus_dmamap_t, bus_dma_segment_t *, int, bus_size_t, int); void (*_dmamap_unload) (bus_dma_tag_t, bus_dmamap_t); void (*_dmamap_sync) (bus_dma_tag_t, bus_dmamap_t, bus_addr_t, bus_size_t, int); /* * DMA memory utility functions. */ int (*_dmamem_alloc) (bus_dma_tag_t, bus_size_t, bus_size_t, bus_size_t, bus_dma_segment_t *, int, int *, int); void (*_dmamem_free) (bus_dma_tag_t, bus_dma_segment_t *, int); int (*_dmamem_map) (bus_dma_tag_t, bus_dma_segment_t *, int, size_t, caddr_t *, int); void (*_dmamem_unmap) (bus_dma_tag_t, caddr_t, size_t); paddr_t (*_dmamem_mmap) (bus_dma_tag_t, bus_dma_segment_t *, int, off_t, int, int); }; #define bus_dmamap_create(t, s, n, m, b, f, p) \ (*(t)->_dmamap_create)((t), (s), (n), (m), (b), (f), (p)) #define bus_dmamap_destroy(t, p) \ (*(t)->_dmamap_destroy)((t), (p)) #define bus_dmamap_load(t, m, b, s, p, f) \ (*(t)->_dmamap_load)((t), (m), (b), (s), (p), (f)) #define bus_dmamap_load_mbuf(t, m, b, f) \ (*(t)->_dmamap_load_mbuf)((t), (m), (b), (f)) #define bus_dmamap_load_uio(t, m, u, f) \ (*(t)->_dmamap_load_uio)((t), (m), (u), (f)) #define bus_dmamap_load_raw(t, m, sg, n, s, f) \ (*(t)->_dmamap_load_raw)((t), (m), (sg), (n), (s), (f)) #define bus_dmamap_unload(t, p) \ (*(t)->_dmamap_unload)((t), (p)) #define bus_dmamap_sync(t, p, o, l, ops) \ (void)((t)->_dmamap_sync ? \ (*(t)->_dmamap_sync)((t), (p), (o), (l), (ops)) : (void)0) #define bus_dmamem_alloc(t, s, a, b, sg, n, r, f) \ (*(t)->_dmamem_alloc)((t), (s), (a), (b), (sg), (n), (r), (f)) #define bus_dmamem_free(t, sg, n) \ (*(t)->_dmamem_free)((t), (sg), (n)) #define bus_dmamem_map(t, sg, n, s, k, f) \ (*(t)->_dmamem_map)((t), (sg), (n), (s), (k), (f)) #define bus_dmamem_unmap(t, k, s) \ (*(t)->_dmamem_unmap)((t), (k), (s)) #define bus_dmamem_mmap(t, sg, n, o, p, f) \ (*(t)->_dmamem_mmap)((t), (sg), (n), (o), (p), (f)) /* * bus_dmamap_t * * Describes a DMA mapping. */ struct arm32_bus_dmamap { /* * PRIVATE MEMBERS: not for use by machine-independent code. */ bus_size_t _dm_size; /* largest DMA transfer mappable */ int _dm_segcnt; /* number of segs this map can map */ bus_size_t _dm_maxsegsz; /* largest possible segment */ bus_size_t _dm_boundary; /* don't cross this */ int _dm_flags; /* misc. flags */ void *_dm_origbuf; /* pointer to original buffer */ int _dm_buftype; /* type of buffer */ struct proc *_dm_proc; /* proc that owns the mapping */ void *_dm_cookie; /* cookie for bus-specific functions */ /* * PUBLIC MEMBERS: these are used by machine-independent code. */ bus_size_t dm_mapsize; /* size of the mapping */ int dm_nsegs; /* # valid segments in mapping */ bus_dma_segment_t dm_segs[1]; /* segments; variable length */ }; #ifdef _ARM32_BUS_DMA_PRIVATE /* _dm_buftype */ #define ARM32_BUFTYPE_INVALID 0 #define ARM32_BUFTYPE_LINEAR 1 #define ARM32_BUFTYPE_MBUF 2 #define ARM32_BUFTYPE_UIO 3 int arm32_dma_range_intersect(struct arm32_dma_range *, int, paddr_t pa, psize_t size, paddr_t *pap, psize_t *sizep); int _bus_dmamap_create (bus_dma_tag_t, bus_size_t, int, bus_size_t, bus_size_t, int, bus_dmamap_t *); void _bus_dmamap_destroy (bus_dma_tag_t, bus_dmamap_t); int _bus_dmamap_load (bus_dma_tag_t, bus_dmamap_t, void *, bus_size_t, struct proc *, int); int _bus_dmamap_load_mbuf (bus_dma_tag_t, bus_dmamap_t, struct mbuf *, int); int _bus_dmamap_load_uio (bus_dma_tag_t, bus_dmamap_t, struct uio *, int); int _bus_dmamap_load_raw (bus_dma_tag_t, bus_dmamap_t, bus_dma_segment_t *, int, bus_size_t, int); void _bus_dmamap_unload (bus_dma_tag_t, bus_dmamap_t); void _bus_dmamap_sync (bus_dma_tag_t, bus_dmamap_t, bus_addr_t, bus_size_t, int); int _bus_dmamem_alloc (bus_dma_tag_t tag, bus_size_t size, bus_size_t alignment, bus_size_t boundary, bus_dma_segment_t *segs, int nsegs, int *rsegs, int flags); void _bus_dmamem_free (bus_dma_tag_t tag, bus_dma_segment_t *segs, int nsegs); int _bus_dmamem_map (bus_dma_tag_t tag, bus_dma_segment_t *segs, int nsegs, size_t size, caddr_t *kvap, int flags); void _bus_dmamem_unmap (bus_dma_tag_t tag, caddr_t kva, size_t size); paddr_t _bus_dmamem_mmap (bus_dma_tag_t tag, bus_dma_segment_t *segs, int nsegs, off_t off, int prot, int flags); int _bus_dmamem_alloc_range (bus_dma_tag_t tag, bus_size_t size, bus_size_t alignment, bus_size_t boundary, bus_dma_segment_t *segs, int nsegs, int *rsegs, int flags, vaddr_t low, vaddr_t high); #endif /* _ARM32_BUS_DMA_PRIVATE */ /* These are OpenBSD extensions to the general NetBSD bus interface. */ void bus_space_read_raw_multi_2(bus_space_tag_t bst, bus_space_handle_t bsh, bus_addr_t ba, u_int8_t *dst, bus_size_t size); void bus_space_read_raw_multi_4(bus_space_tag_t bst, bus_space_handle_t bsh, bus_addr_t ba, u_int8_t *dst, bus_size_t size); #define bus_space_read_raw_multi_8 \ !!! bus_space_read_raw_multi_8 not implemented !!! void bus_space_write_raw_multi_2(bus_space_tag_t bst, bus_space_handle_t bsh, bus_addr_t ba, const u_int8_t *src, bus_size_t size); void bus_space_write_raw_multi_4(bus_space_tag_t bst, bus_space_handle_t bsh, bus_addr_t ba, const u_int8_t *src, bus_size_t size); #define bus_space_write_raw_multi_8 \ !!! bus_space_write_raw_multi_8 not implemented !!! /* * void bus_space_read_raw_region_N(bus_space_tag_t tag, * bus_space_handle_t bsh, bus_size_t offset, * u_int8_t *addr, size_t count); * * Read `count' bytes in 2, 4 or 8 byte wide quantities from bus space * described by tag/handle and starting at `offset' and copy into * buffer provided. The buffer must have proper alignment for the N byte * wide entities. Furthermore possible byte-swapping should be done by * these functions. */ #define bus_space_read_raw_region_2(t, h, o, a, c) \ bus_space_read_region_2((t), (h), (o), (u_int16_t *)(a), (c) >> 1) #define bus_space_read_raw_region_4(t, h, o, a, c) \ bus_space_read_region_4((t), (h), (o), (u_int32_t *)(a), (c) >> 2) #if 0 /* Cause a link error for bus_space_read_raw_region_8 */ #define bus_space_read_raw_region_8 \ !!! bus_space_read_raw_region_8 unimplemented !!! #endif /* * void bus_space_write_raw_region_N(bus_space_tag_t tag, * bus_space_handle_t bsh, bus_size_t offset, * const u_int8_t *addr, size_t count); * * Write `count' bytes in 2, 4 or 8 byte wide quantities to bus space * described by tag/handle and starting at `offset' from the * buffer provided. The buffer must have proper alignment for the N byte * wide entities. Furthermore possible byte-swapping should be done by * these functions. */ #define bus_space_write_raw_region_2(t, h, o, a, c) \ bus_space_write_region_2((t), (h), (o), (const u_int16_t *)(a), (c) >> 1) #define bus_space_write_raw_region_4(t, h, o, a, c) \ bus_space_write_region_4((t), (h), (o), (const u_int32_t *)(a), (c) >> 2) #if 0 /* Cause a link error for bus_space_write_raw_region_8 */ #define bus_space_write_raw_region_8 \ !!! bus_space_write_raw_region_8 unimplemented !!! #endif #endif /* _ARM_BUS_H_ */