/* $OpenBSD: bus.h,v 1.28 2009/07/30 21:39:54 miod Exp $ */ /* * Copyright (c) 1998-2004 Michael Shalayeff * 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 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 OR HIS RELATIVES 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 MIND, 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 _MACHINE_BUS_H_ #define _MACHINE_BUS_H_ #include /* addresses in bus space */ typedef u_long bus_addr_t; typedef u_long bus_size_t; /* access methods for bus space */ typedef u_long bus_space_handle_t; struct hppa_bus_space_tag { void *hbt_cookie; int (*hbt_map)(void *v, bus_addr_t addr, bus_size_t size, int flags, bus_space_handle_t *bshp); void (*hbt_unmap)(void *v, bus_space_handle_t bsh, bus_size_t size); int (*hbt_subregion)(void *v, bus_space_handle_t bsh, bus_size_t offset, bus_size_t size, bus_space_handle_t *nbshp); int (*hbt_alloc)(void *v, 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); void (*hbt_free)(void *, bus_space_handle_t, bus_size_t); void (*hbt_barrier)(void *v, bus_space_handle_t h, bus_size_t o, bus_size_t l, int op); void *(*hbt_vaddr)(void *v, bus_space_handle_t h); u_int8_t (*hbt_r1)(void *, bus_space_handle_t, bus_size_t); u_int16_t (*hbt_r2)(void *, bus_space_handle_t, bus_size_t); u_int32_t (*hbt_r4)(void *, bus_space_handle_t, bus_size_t); u_int64_t (*hbt_r8)(void *, bus_space_handle_t, bus_size_t); void (*hbt_w1)(void *, bus_space_handle_t, bus_size_t, u_int8_t); void (*hbt_w2)(void *, bus_space_handle_t, bus_size_t, u_int16_t); void (*hbt_w4)(void *, bus_space_handle_t, bus_size_t, u_int32_t); void (*hbt_w8)(void *, bus_space_handle_t, bus_size_t, u_int64_t); void (*hbt_rm_1)(void *v, bus_space_handle_t h, bus_size_t o, u_int8_t *a, bus_size_t c); void (*hbt_rm_2)(void *v, bus_space_handle_t h, bus_size_t o, u_int16_t *a, bus_size_t c); void (*hbt_rm_4)(void *v, bus_space_handle_t h, bus_size_t o, u_int32_t *a, bus_size_t c); void (*hbt_rm_8)(void *v, bus_space_handle_t h, bus_size_t o, u_int64_t *a, bus_size_t c); void (*hbt_wm_1)(void *v, bus_space_handle_t h, bus_size_t o, const u_int8_t *a, bus_size_t c); void (*hbt_wm_2)(void *v, bus_space_handle_t h, bus_size_t o, const u_int16_t *a, bus_size_t c); void (*hbt_wm_4)(void *v, bus_space_handle_t h, bus_size_t o, const u_int32_t *a, bus_size_t c); void (*hbt_wm_8)(void *v, bus_space_handle_t h, bus_size_t o, const u_int64_t *a, bus_size_t c); void (*hbt_sm_1)(void *v, bus_space_handle_t h, bus_size_t o, u_int8_t vv, bus_size_t c); void (*hbt_sm_2)(void *v, bus_space_handle_t h, bus_size_t o, u_int16_t vv, bus_size_t c); void (*hbt_sm_4)(void *v, bus_space_handle_t h, bus_size_t o, u_int32_t vv, bus_size_t c); void (*hbt_sm_8)(void *v, bus_space_handle_t h, bus_size_t o, u_int64_t vv, bus_size_t c); void (*hbt_rrm_2)(void *v, bus_space_handle_t h, bus_size_t o, u_int8_t *a, bus_size_t c); void (*hbt_rrm_4)(void *v, bus_space_handle_t h, bus_size_t o, u_int8_t *a, bus_size_t c); void (*hbt_rrm_8)(void *v, bus_space_handle_t h, bus_size_t o, u_int8_t *a, bus_size_t c); void (*hbt_wrm_2)(void *v, bus_space_handle_t h, bus_size_t o, const u_int8_t *a, bus_size_t c); void (*hbt_wrm_4)(void *v, bus_space_handle_t h, bus_size_t o, const u_int8_t *a, bus_size_t c); void (*hbt_wrm_8)(void *v, bus_space_handle_t h, bus_size_t o, const u_int8_t *a, bus_size_t c); void (*hbt_rr_1)(void *v, bus_space_handle_t h, bus_size_t o, u_int8_t *a, bus_size_t c); void (*hbt_rr_2)(void *v, bus_space_handle_t h, bus_size_t o, u_int16_t *a, bus_size_t c); void (*hbt_rr_4)(void *v, bus_space_handle_t h, bus_size_t o, u_int32_t *a, bus_size_t c); void (*hbt_rr_8)(void *v, bus_space_handle_t h, bus_size_t o, u_int64_t *a, bus_size_t c); void (*hbt_wr_1)(void *v, bus_space_handle_t h, bus_size_t o, const u_int8_t *a, bus_size_t c); void (*hbt_wr_2)(void *v, bus_space_handle_t h, bus_size_t o, const u_int16_t *a, bus_size_t c); void (*hbt_wr_4)(void *v, bus_space_handle_t h, bus_size_t o, const u_int32_t *a, bus_size_t c); void (*hbt_wr_8)(void *v, bus_space_handle_t h, bus_size_t o, const u_int64_t *a, bus_size_t c); void (*hbt_rrr_2)(void *v, bus_space_handle_t h, bus_size_t o, u_int8_t *a, bus_size_t c); void (*hbt_rrr_4)(void *v, bus_space_handle_t h, bus_size_t o, u_int8_t *a, bus_size_t c); void (*hbt_rrr_8)(void *v, bus_space_handle_t h, bus_size_t o, u_int8_t *a, bus_size_t c); void (*hbt_wrr_2)(void *v, bus_space_handle_t h, bus_size_t o, const u_int8_t *a, bus_size_t c); void (*hbt_wrr_4)(void *v, bus_space_handle_t h, bus_size_t o, const u_int8_t *a, bus_size_t c); void (*hbt_wrr_8)(void *v, bus_space_handle_t h, bus_size_t o, const u_int8_t *a, bus_size_t c); void (*hbt_sr_1)(void *v, bus_space_handle_t h, bus_size_t o, u_int8_t vv, bus_size_t c); void (*hbt_sr_2)(void *v, bus_space_handle_t h, bus_size_t o, u_int16_t vv, bus_size_t c); void (*hbt_sr_4)(void *v, bus_space_handle_t h, bus_size_t o, u_int32_t vv, bus_size_t c); void (*hbt_sr_8)(void *v, bus_space_handle_t h, bus_size_t o, u_int64_t vv, bus_size_t c); void (*hbt_cp_1)(void *v, bus_space_handle_t h1, bus_size_t o1, bus_space_handle_t h2, bus_size_t o2, bus_size_t c); void (*hbt_cp_2)(void *v, bus_space_handle_t h1, bus_size_t o1, bus_space_handle_t h2, bus_size_t o2, bus_size_t c); void (*hbt_cp_4)(void *v, bus_space_handle_t h1, bus_size_t o1, bus_space_handle_t h2, bus_size_t o2, bus_size_t c); void (*hbt_cp_8)(void *v, bus_space_handle_t h1, bus_size_t o1, bus_space_handle_t h2, bus_size_t o2, bus_size_t c); }; typedef const struct hppa_bus_space_tag *bus_space_tag_t; extern const struct hppa_bus_space_tag hppa_bustag; /* flags for bus space map functions */ #define BUS_SPACE_MAP_CACHEABLE 0x0001 #define BUS_SPACE_MAP_LINEAR 0x0002 #define BUS_SPACE_MAP_READONLY 0x0004 #define BUS_SPACE_MAP_PREFETCHABLE 0x0008 #define BUS_SPACE_MAP_NOEXTENT 0x8000 /* no extent ops */ /* bus access routines */ #define bus_space_map(t,a,c,ca,hp) \ (((t)->hbt_map)((t)->hbt_cookie,(a),(c),(ca),(hp))) #define bus_space_unmap(t,h,c) \ (((t)->hbt_unmap)((t)->hbt_cookie,(h),(c))) #define bus_space_subregion(t,h,o,c,hp) \ (((t)->hbt_subregion)((t)->hbt_cookie,(h),(o),(c),(hp))) #define bus_space_alloc(t,b,e,c,al,bn,ca,ap,hp) \ (((t)->hbt_alloc)((t)->hbt_cookie,(b),(e),(c),(al),(bn),(ca),(ap),(hp))) #define bus_space_free(t,h,c) \ (((t)->hbt_free)((t)->hbt_cookie,(h),(c))) #define bus_space_read_1(t,h,o) (((t)->hbt_r1)((t)->hbt_cookie,(h),(o))) #define bus_space_read_2(t,h,o) (((t)->hbt_r2)((t)->hbt_cookie,(h),(o))) #define bus_space_read_4(t,h,o) (((t)->hbt_r4)((t)->hbt_cookie,(h),(o))) #define bus_space_read_8(t,h,o) (((t)->hbt_r8)((t)->hbt_cookie,(h),(o))) #define bus_space_write_1(t,h,o,v) (((t)->hbt_w1)((t)->hbt_cookie,(h),(o),(v))) #define bus_space_write_2(t,h,o,v) (((t)->hbt_w2)((t)->hbt_cookie,(h),(o),(v))) #define bus_space_write_4(t,h,o,v) (((t)->hbt_w4)((t)->hbt_cookie,(h),(o),(v))) #define bus_space_write_8(t,h,o,v) (((t)->hbt_w8)((t)->hbt_cookie,(h),(o),(v))) #define bus_space_read_multi_1(t,h,o,a,c) \ (((t)->hbt_rm_1)((t)->hbt_cookie, (h), (o), (a), (c))) #define bus_space_read_multi_2(t,h,o,a,c) \ (((t)->hbt_rm_2)((t)->hbt_cookie, (h), (o), (a), (c))) #define bus_space_read_multi_4(t,h,o,a,c) \ (((t)->hbt_rm_4)((t)->hbt_cookie, (h), (o), (a), (c))) #define bus_space_read_multi_8(t,h,o,a,c) \ (((t)->hbt_rm_8)((t)->hbt_cookie, (h), (o), (a), (c))) #define bus_space_write_multi_1(t,h,o,a,c) \ (((t)->hbt_wm_1)((t)->hbt_cookie, (h), (o), (a), (c))) #define bus_space_write_multi_2(t,h,o,a,c) \ (((t)->hbt_wm_2)((t)->hbt_cookie, (h), (o), (a), (c))) #define bus_space_write_multi_4(t,h,o,a,c) \ (((t)->hbt_wm_4)((t)->hbt_cookie, (h), (o), (a), (c))) #define bus_space_write_multi_8(t,h,o,a,c) \ (((t)->hbt_wm_8)((t)->hbt_cookie, (h), (o), (a), (c))) #define bus_space_set_multi_1(t,h,o,v,c) \ (((t)->hbt_sm_1)((t)->hbt_cookie, (h), (o), (v), (c))) #define bus_space_set_multi_2(t,h,o,v,c) \ (((t)->hbt_sm_2)((t)->hbt_cookie, (h), (o), (v), (c))) #define bus_space_set_multi_4(t,h,o,v,c) \ (((t)->hbt_sm_4)((t)->hbt_cookie, (h), (o), (v), (c))) #define bus_space_set_multi_8(t,h,o,v,c) \ (((t)->hbt_sm_8)((t)->hbt_cookie, (h), (o), (v), (c))) #define bus_space_read_raw_multi_2(t, h, o, a, c) \ (((t)->hbt_rrm_2)((t)->hbt_cookie, (h), (o), (a), (c))) #define bus_space_read_raw_multi_4(t, h, o, a, c) \ (((t)->hbt_rrm_4)((t)->hbt_cookie, (h), (o), (a), (c))) #define bus_space_read_raw_multi_8(t, h, o, a, c) \ (((t)->hbt_rrm_8)((t)->hbt_cookie, (h), (o), (a), (c))) #define bus_space_write_raw_multi_2(t, h, o, a, c) \ (((t)->hbt_wrm_2)((t)->hbt_cookie, (h), (o), (a), (c))) #define bus_space_write_raw_multi_4(t, h, o, a, c) \ (((t)->hbt_wrm_4)((t)->hbt_cookie, (h), (o), (a), (c))) #define bus_space_write_raw_multi_8(t, h, o, a, c) \ (((t)->hbt_wrm_8)((t)->hbt_cookie, (h), (o), (a), (c))) #define bus_space_read_region_1(t, h, o, a, c) \ (((t)->hbt_rr_1)((t)->hbt_cookie, (h), (o), (a), (c))) #define bus_space_read_region_2(t, h, o, a, c) \ (((t)->hbt_rr_2)((t)->hbt_cookie, (h), (o), (a), (c))) #define bus_space_read_region_4(t, h, o, a, c) \ (((t)->hbt_rr_4)((t)->hbt_cookie, (h), (o), (a), (c))) #define bus_space_read_region_8(t, h, o, a, c) \ (((t)->hbt_rr_8)((t)->hbt_cookie, (h), (o), (a), (c))) #define bus_space_write_region_1(t, h, o, a, c) \ (((t)->hbt_wr_1)((t)->hbt_cookie, (h), (o), (a), (c))) #define bus_space_write_region_2(t, h, o, a, c) \ (((t)->hbt_wr_2)((t)->hbt_cookie, (h), (o), (a), (c))) #define bus_space_write_region_4(t, h, o, a, c) \ (((t)->hbt_wr_4)((t)->hbt_cookie, (h), (o), (a), (c))) #define bus_space_write_region_8(t, h, o, a, c) \ (((t)->hbt_wr_8)((t)->hbt_cookie, (h), (o), (a), (c))) #define bus_space_read_raw_region_2(t, h, o, a, c) \ (((t)->hbt_rrr_2)((t)->hbt_cookie, (h), (o), (a), (c))) #define bus_space_read_raw_region_4(t, h, o, a, c) \ (((t)->hbt_rrr_4)((t)->hbt_cookie, (h), (o), (a), (c))) #define bus_space_read_raw_region_8(t, h, o, a, c) \ (((t)->hbt_rrr_8)((t)->hbt_cookie, (h), (o), (a), (c))) #define bus_space_write_raw_region_2(t, h, o, a, c) \ (((t)->hbt_wrr_2)((t)->hbt_cookie, (h), (o), (a), (c))) #define bus_space_write_raw_region_4(t, h, o, a, c) \ (((t)->hbt_wrr_4)((t)->hbt_cookie, (h), (o), (a), (c))) #define bus_space_write_raw_region_8(t, h, o, a, c) \ (((t)->hbt_wrr_8)((t)->hbt_cookie, (h), (o), (a), (c))) #define bus_space_set_region_1(t, h, o, v, c) \ (((t)->hbt_sr_1)((t)->hbt_cookie, (h), (o), (v), (c))) #define bus_space_set_region_2(t, h, o, v, c) \ (((t)->hbt_sr_2)((t)->hbt_cookie, (h), (o), (v), (c))) #define bus_space_set_region_4(t, h, o, v, c) \ (((t)->hbt_sr_4)((t)->hbt_cookie, (h), (o), (v), (c))) #define bus_space_set_region_8(t, h, o, v, c) \ (((t)->hbt_sr_8)((t)->hbt_cookie, (h), (o), (v), (c))) #define bus_space_copy_1(t, h1, o1, h2, o2, c) \ (((t)->hbt_cp_1)((t)->hbt_cookie, (h1), (o1), (h2), (o2), (c))) #define bus_space_copy_2(t, h1, o1, h2, o2, c) \ (((t)->hbt_cp_2)((t)->hbt_cookie, (h1), (o1), (h2), (o2), (c))) #define bus_space_copy_4(t, h1, o1, h2, o2, c) \ (((t)->hbt_cp_4)((t)->hbt_cookie, (h1), (o1), (h2), (o2), (c))) #define bus_space_copy_8(t, h1, o1, h2, o2, c) \ (((t)->hbt_cp_8)((t)->hbt_cookie, (h1), (o1), (h2), (o2), (c))) #define BUS_SPACE_BARRIER_READ 0x01 #define BUS_SPACE_BARRIER_WRITE 0x02 #define bus_space_barrier(t,h,o,l,op) \ ((t)->hbt_barrier((t)->hbt_cookie, (h), (o), (l), (op))) #define bus_space_vaddr(t,h) \ ((t)->hbt_vaddr((t)->hbt_cookie, (h))) #define BUS_DMA_WAITOK 0x0000 /* safe to sleep (pseudo-flag) */ #define BUS_DMA_NOWAIT 0x0001 /* not safe to sleep */ #define BUS_DMA_ALLOCNOW 0x0002 /* perform resource allocation now */ #define BUS_DMA_COHERENT 0x0004 /* hint: map memory DMA coherent */ #define BUS_DMA_BUS1 0x0020 /* placeholders for bus functions... */ #define BUS_DMA_BUS2 0x0040 #define BUS_DMA_BUS3 0x0080 #define BUS_DMA_BUS4 0x0100 #define BUS_DMA_STREAMING 0x0200 /* hint: sequential, unidirectional */ #define BUS_DMA_READ 0x0400 /* mapping is device -> memory only */ #define BUS_DMA_WRITE 0x0800 /* mapping is memory -> device only */ #define BUS_DMA_ZERO 0x1000 /* zero memory in dmamem_alloc */ /* Forwards needed by prototypes below. */ struct mbuf; struct proc; struct uio; /* Operations performed by bus_dmamap_sync(). */ #define BUS_DMASYNC_POSTREAD 0x01 #define BUS_DMASYNC_POSTWRITE 0x02 #define BUS_DMASYNC_PREREAD 0x04 #define BUS_DMASYNC_PREWRITE 0x08 typedef const struct hppa_bus_dma_tag *bus_dma_tag_t; typedef struct hppa_bus_dmamap *bus_dmamap_t; /* * bus_dma_segment_t * * Describes a single contiguous DMA transaction. Values * are suitable for programming into DMA registers. */ struct hppa_bus_dma_segment { vaddr_t _ds_va; /* needed for syncing */ bus_addr_t ds_addr; /* DMA address */ bus_size_t ds_len; /* length of transfer */ }; typedef struct hppa_bus_dma_segment bus_dma_segment_t; /* * bus_dma_tag_t * * A machine-dependent opaque type describing the implementation of * DMA for a given bus. */ struct hppa_bus_dma_tag { void *_cookie; /* cookie used in the guts */ /* * DMA mapping methods. */ int (*_dmamap_create)(void *, bus_size_t, int, bus_size_t, bus_size_t, int, bus_dmamap_t *); void (*_dmamap_destroy)(void *, bus_dmamap_t); int (*_dmamap_load)(void *, bus_dmamap_t, void *, bus_size_t, struct proc *, int); int (*_dmamap_load_mbuf)(void *, bus_dmamap_t, struct mbuf *, int); int (*_dmamap_load_uio)(void *, bus_dmamap_t, struct uio *, int); int (*_dmamap_load_raw)(void *, bus_dmamap_t, bus_dma_segment_t *, int, bus_size_t, int); void (*_dmamap_unload)(void *, bus_dmamap_t); void (*_dmamap_sync)(void *, bus_dmamap_t, bus_addr_t, bus_size_t, int); /* * DMA memory utility functions. */ int (*_dmamem_alloc)(void *, bus_size_t, bus_size_t, bus_size_t, bus_dma_segment_t *, int, int *, int); void (*_dmamem_free)(void *, bus_dma_segment_t *, int); int (*_dmamem_map)(void *, bus_dma_segment_t *, int, size_t, caddr_t *, int); void (*_dmamem_unmap)(void *, caddr_t, size_t); paddr_t (*_dmamem_mmap)(void *, bus_dma_segment_t *, int, off_t, int, int); }; #define bus_dmamap_create(t, s, n, m, b, f, p) \ (*(t)->_dmamap_create)((t)->_cookie, (s), (n), (m), (b), (f), (p)) #define bus_dmamap_destroy(t, p) \ (*(t)->_dmamap_destroy)((t)->_cookie, (p)) #define bus_dmamap_load(t, m, b, s, p, f) \ (*(t)->_dmamap_load)((t)->_cookie, (m), (b), (s), (p), (f)) #define bus_dmamap_load_mbuf(t, m, b, f) \ (*(t)->_dmamap_load_mbuf)((t)->_cookie, (m), (b), (f)) #define bus_dmamap_load_uio(t, m, u, f) \ (*(t)->_dmamap_load_uio)((t)->_cookie, (m), (u), (f)) #define bus_dmamap_load_raw(t, m, sg, n, s, f) \ (*(t)->_dmamap_load_raw)((t)->_cookie, (m), (sg), (n), (s), (f)) #define bus_dmamap_unload(t, p) \ (*(t)->_dmamap_unload)((t)->_cookie, (p)) #define bus_dmamap_sync(t, p, a, l, o) \ (void)((t)->_dmamap_sync ? \ (*(t)->_dmamap_sync)((t)->_cookie, (p), (a), (l), (o)) : (void)0) #define bus_dmamem_alloc(t, s, a, b, sg, n, r, f) \ (*(t)->_dmamem_alloc)((t)->_cookie, (s), (a), (b), (sg), (n), (r), (f)) #define bus_dmamem_free(t, sg, n) \ (*(t)->_dmamem_free)((t)->_cookie, (sg), (n)) #define bus_dmamem_map(t, sg, n, s, k, f) \ (*(t)->_dmamem_map)((t)->_cookie, (sg), (n), (s), (k), (f)) #define bus_dmamem_unmap(t, k, s) \ (*(t)->_dmamem_unmap)((t)->_cookie, (k), (s)) #define bus_dmamem_mmap(t, sg, n, o, p, f) \ (*(t)->_dmamem_mmap)((t)->_cookie, (sg), (n), (o), (p), (f)) /* * bus_dmamap_t * * Describes a DMA mapping. */ struct hppa_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_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 */ }; #endif /* _MACHINE_BUS_H_ */