/* $OpenBSD: bus.h,v 1.10 2022/01/04 20:41:44 deraadt Exp $ */ /* $NetBSD: bus.h,v 1.1 2006/09/01 21:26:18 uwe 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. * * 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 _MACHINE_BUS_H_ #define _MACHINE_BUS_H_ #ifdef _KERNEL #include typedef u_long bus_addr_t; typedef u_long bus_size_t; typedef struct _bus_space *bus_space_tag_t; typedef u_long bus_space_handle_t; 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); /* read (single) */ uint8_t (*bs_r_1)(void *, bus_space_handle_t, bus_size_t); uint16_t (*bs_r_2)(void *, bus_space_handle_t, bus_size_t); uint32_t (*bs_r_4)(void *, bus_space_handle_t, bus_size_t); uint64_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, uint8_t *, bus_size_t); void (*bs_rm_2)(void *, bus_space_handle_t, bus_size_t, uint16_t *, bus_size_t); void (*bs_rm_4)(void *, bus_space_handle_t, bus_size_t, uint32_t *, bus_size_t); void (*bs_rm_8)(void *, bus_space_handle_t, bus_size_t, uint64_t *, bus_size_t); void (*bs_rrm_2)(void *, bus_space_handle_t, bus_size_t, uint8_t *, bus_size_t); void (*bs_rrm_4)(void *, bus_space_handle_t, bus_size_t, uint8_t *, bus_size_t); void (*bs_rrm_8)(void *, bus_space_handle_t, bus_size_t, uint8_t *, bus_size_t); /* read region */ void (*bs_rr_1)(void *, bus_space_handle_t, bus_size_t, uint8_t *, bus_size_t); void (*bs_rr_2)(void *, bus_space_handle_t, bus_size_t, uint16_t *, bus_size_t); void (*bs_rr_4)(void *, bus_space_handle_t, bus_size_t, uint32_t *, bus_size_t); void (*bs_rr_8)(void *, bus_space_handle_t, bus_size_t, uint64_t *, bus_size_t); void (*bs_rrr_2)(void *, bus_space_handle_t, bus_size_t, uint8_t *, bus_size_t); void (*bs_rrr_4)(void *, bus_space_handle_t, bus_size_t, uint8_t *, bus_size_t); void (*bs_rrr_8)(void *, bus_space_handle_t, bus_size_t, uint8_t *, bus_size_t); /* write (single) */ void (*bs_w_1)(void *, bus_space_handle_t, bus_size_t, uint8_t); void (*bs_w_2)(void *, bus_space_handle_t, bus_size_t, uint16_t); void (*bs_w_4)(void *, bus_space_handle_t, bus_size_t, uint32_t); void (*bs_w_8)(void *, bus_space_handle_t, bus_size_t, uint64_t); /* write multiple */ void (*bs_wm_1)(void *, bus_space_handle_t, bus_size_t, const uint8_t *, bus_size_t); void (*bs_wm_2)(void *, bus_space_handle_t, bus_size_t, const uint16_t *, bus_size_t); void (*bs_wm_4)(void *, bus_space_handle_t, bus_size_t, const uint32_t *, bus_size_t); void (*bs_wm_8)(void *, bus_space_handle_t, bus_size_t, const uint64_t *, bus_size_t); void (*bs_wrm_2)(void *, bus_space_handle_t, bus_size_t, const uint8_t *, bus_size_t); void (*bs_wrm_4)(void *, bus_space_handle_t, bus_size_t, const uint8_t *, bus_size_t); void (*bs_wrm_8)(void *, bus_space_handle_t, bus_size_t, const uint8_t *, bus_size_t); /* write region */ void (*bs_wr_1)(void *, bus_space_handle_t, bus_size_t, const uint8_t *, bus_size_t); void (*bs_wr_2)(void *, bus_space_handle_t, bus_size_t, const uint16_t *, bus_size_t); void (*bs_wr_4)(void *, bus_space_handle_t, bus_size_t, const uint32_t *, bus_size_t); void (*bs_wr_8)(void *, bus_space_handle_t, bus_size_t, const uint64_t *, bus_size_t); void (*bs_wrr_2)(void *, bus_space_handle_t, bus_size_t, const uint8_t *, bus_size_t); void (*bs_wrr_4)(void *, bus_space_handle_t, bus_size_t, const uint8_t *, bus_size_t); void (*bs_wrr_8)(void *, bus_space_handle_t, bus_size_t, const uint8_t *, bus_size_t); /* set multiple */ void (*bs_sm_1)(void *, bus_space_handle_t, bus_size_t, uint8_t, bus_size_t); void (*bs_sm_2)(void *, bus_space_handle_t, bus_size_t, uint16_t, bus_size_t); void (*bs_sm_4)(void *, bus_space_handle_t, bus_size_t, uint32_t, bus_size_t); void (*bs_sm_8)(void *, bus_space_handle_t, bus_size_t, uint64_t, bus_size_t); /* set region */ void (*bs_sr_1)(void *, bus_space_handle_t, bus_size_t, uint8_t, bus_size_t); void (*bs_sr_2)(void *, bus_space_handle_t, bus_size_t, uint16_t, bus_size_t); void (*bs_sr_4)(void *, bus_space_handle_t, bus_size_t, uint32_t, bus_size_t); void (*bs_sr_8)(void *, bus_space_handle_t, bus_size_t, uint64_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); }; #ifdef _KERNEL /* * 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, tn, t, h, o) \ (*(t)->__bs_opname(r,sz))((t)->bs_cookie, h, o) #define __bs_ws(sz, tn, t, h, o, v) \ (*(t)->__bs_opname(w,sz))((t)->bs_cookie, h, o, v) #define __bs_nonsingle(type, sz, tn, t, h, o, a, c) \ (*(t)->__bs_opname(type,sz))((t)->bs_cookie, h, o, a, c) #define __bs_set(type, sz, tn, t, h, o, v, c) \ (*(t)->__bs_opname(type,sz))((t)->bs_cookie, h, o, v, c) #define __bs_copy(sz, tn, 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, f, hp) \ (*(t)->bs_map)((t)->bs_cookie, (a), (s), (f), (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)) #endif /* _KERNEL */ #define BUS_SPACE_MAP_CACHEABLE 0x01 #define BUS_SPACE_MAP_LINEAR 0x02 #define BUS_SPACE_MAP_PREFETCHABLE 0x04 #ifdef _KERNEL /* * Allocation and deallocation operations. */ #define bus_space_alloc(t, rs, re, s, a, b, f, ap, hp) \ (*(t)->bs_alloc)((t)->bs_cookie, (rs), (re), (s), (a), (b), \ (f), (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)) /* * Bus barrier operations. The SH3 does not currently require * barriers, but we must provide the flags to MI code. */ #define bus_space_barrier(t, h, o, l, f) \ ((void)((void)(t), (void)(h), (void)(o), (void)(l), (void)(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,uint8_t,(t),(h),(o)) #define bus_space_read_2(t, h, o) __bs_rs(2,uint16_t,(t),(h),(o)) #define bus_space_read_4(t, h, o) __bs_rs(4,uint32_t,(t),(h),(o)) #define bus_space_read_8(t, h, o) __bs_rs(8,uint64_t,(t),(h),(o)) /* * Bus read multiple operations. */ #define bus_space_read_multi_1(t, h, o, a, c) \ __bs_nonsingle(rm,1,uint8_t,(t),(h),(o),(a),(c)) #define bus_space_read_multi_2(t, h, o, a, c) \ __bs_nonsingle(rm,2,uint16_t,(t),(h),(o),(a),(c)) #define bus_space_read_multi_4(t, h, o, a, c) \ __bs_nonsingle(rm,4,uint32_t,(t),(h),(o),(a),(c)) #define bus_space_read_multi_8(t, h, o, a, c) \ __bs_nonsingle(rm,8,uint64_t,(t),(h),(o),(a),(c)) #define bus_space_read_raw_multi_2(t, h, o, a, c) \ __bs_nonsingle(rrm,2,uint16_t,(t),(h),(o),(a),(c)) #define bus_space_read_raw_multi_4(t, h, o, a, c) \ __bs_nonsingle(rrm,4,uint32_t,(t),(h),(o),(a),(c)) #define bus_space_read_raw_multi_8(t, h, o, a, c) \ __bs_nonsingle(rrm,8,uint64_t,(t),(h),(o),(a),(c)) /* * Bus read region operations. */ #define bus_space_read_region_1(t, h, o, a, c) \ __bs_nonsingle(rr,1,uint8_t,(t),(h),(o),(a),(c)) #define bus_space_read_region_2(t, h, o, a, c) \ __bs_nonsingle(rr,2,uint16_t,(t),(h),(o),(a),(c)) #define bus_space_read_region_4(t, h, o, a, c) \ __bs_nonsingle(rr,4,uint32_t,(t),(h),(o),(a),(c)) #define bus_space_read_region_8(t, h, o, a, c) \ __bs_nonsingle(rr,8,uint64_t,(t),(h),(o),(a),(c)) #define bus_space_read_raw_region_2(t, h, o, a, c) \ __bs_nonsingle(rrr,2,uint16_t,(t),(h),(o),(a),(c)) #define bus_space_read_raw_region_4(t, h, o, a, c) \ __bs_nonsingle(rrr,4,uint32_t,(t),(h),(o),(a),(c)) #define bus_space_read_raw_region_8(t, h, o, a, c) \ __bs_nonsingle(rrr,8,uint64_t,(t),(h),(o),(a),(c)) /* * Bus write (single) operations. */ #define bus_space_write_1(t, h, o, v) __bs_ws(1,uint8_t,(t),(h),(o),(v)) #define bus_space_write_2(t, h, o, v) __bs_ws(2,uint16_t,(t),(h),(o),(v)) #define bus_space_write_4(t, h, o, v) __bs_ws(4,uint32_t,(t),(h),(o),(v)) #define bus_space_write_8(t, h, o, v) __bs_ws(8,uint64_t,(t),(h),(o),(v)) /* * Bus write multiple operations. */ #define bus_space_write_multi_1(t, h, o, a, c) \ __bs_nonsingle(wm,1,uint8_t,(t),(h),(o),(a),(c)) #define bus_space_write_multi_2(t, h, o, a, c) \ __bs_nonsingle(wm,2,uint16_t,(t),(h),(o),(a),(c)) #define bus_space_write_multi_4(t, h, o, a, c) \ __bs_nonsingle(wm,4,uint32_t,(t),(h),(o),(a),(c)) #define bus_space_write_multi_8(t, h, o, a, c) \ __bs_nonsingle(wm,8,uint64_t,(t),(h),(o),(a),(c)) #define bus_space_write_raw_multi_2(t, h, o, a, c) \ __bs_nonsingle(wrm,2,uint16_t,(t),(h),(o),(a),(c)) #define bus_space_write_raw_multi_4(t, h, o, a, c) \ __bs_nonsingle(wrm,4,uint32_t,(t),(h),(o),(a),(c)) #define bus_space_write_raw_multi_8(t, h, o, a, c) \ __bs_nonsingle(wrm,8,uint64_t,(t),(h),(o),(a),(c)) /* * Bus write region operations. */ #define bus_space_write_region_1(t, h, o, a, c) \ __bs_nonsingle(wr,1,uint8_t,(t),(h),(o),(a),(c)) #define bus_space_write_region_2(t, h, o, a, c) \ __bs_nonsingle(wr,2,uint16_t,(t),(h),(o),(a),(c)) #define bus_space_write_region_4(t, h, o, a, c) \ __bs_nonsingle(wr,4,uint32_t,(t),(h),(o),(a),(c)) #define bus_space_write_region_8(t, h, o, a, c) \ __bs_nonsingle(wr,8,uint64_t,(t),(h),(o),(a),(c)) #define bus_space_write_raw_region_2(t, h, o, a, c) \ __bs_nonsingle(wrr,2,uint16_t,(t),(h),(o),(a),(c)) #define bus_space_write_raw_region_4(t, h, o, a, c) \ __bs_nonsingle(wrr,4,uint32_t,(t),(h),(o),(a),(c)) #define bus_space_write_raw_region_8(t, h, o, a, c) \ __bs_nonsingle(wrr,8,uint64_t,(t),(h),(o),(a),(c)) /* * Set multiple operations. */ #define bus_space_set_multi_1(t, h, o, v, c) \ __bs_set(sm,1,uint8_t,(t),(h),(o),(v),(c)) #define bus_space_set_multi_2(t, h, o, v, c) \ __bs_set(sm,2,uint16_t,(t),(h),(o),(v),(c)) #define bus_space_set_multi_4(t, h, o, v, c) \ __bs_set(sm,4,uint32_t,(t),(h),(o),(v),(c)) #define bus_space_set_multi_8(t, h, o, v, c) \ __bs_set(sm,8,uint64_t,(t),(h),(o),(v),(c)) /* * Set region operations. */ #define bus_space_set_region_1(t, h, o, v, c) \ __bs_set(sr,1,uint8_t,(t),(h),(o),(v),(c)) #define bus_space_set_region_2(t, h, o, v, c) \ __bs_set(sr,2,uint16_t,(t),(h),(o),(v),(c)) #define bus_space_set_region_4(t, h, o, v, c) \ __bs_set(sr,4,uint32_t,(t),(h),(o),(v),(c)) #define bus_space_set_region_8(t, h, o, v, c) \ __bs_set(sr,8,uint64_t,(t),(h),(o),(v),(c)) /* * Copy region operations. */ #define bus_space_copy_1(t, h1, o1, h2, o2, c) \ __bs_copy(1, uint8_t, (t), (h1), (o1), (h2), (o2), (c)) #define bus_space_copy_2(t, h1, o1, h2, o2, c) \ __bs_copy(2, uint16_t, (t), (h1), (o1), (h2), (o2), (c)) #define bus_space_copy_4(t, h1, o1, h2, o2, c) \ __bs_copy(4, uint32_t, (t), (h1), (o1), (h2), (o2), (c)) #define bus_space_copy_8(t, h1, o1, h2, o2, c) \ __bs_copy(8, uint64_t, (t), (h1), (o1), (h2), (o2), (c)) #endif /* _KERNEL */ /* * Flags used in various bus DMA methods. */ #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 /* map memory to not require sync */ #define BUS_DMA_STREAMING 0x0008 /* hint: sequential, unidirectional */ #define BUS_DMA_BUS1 0x0010 /* placeholders for bus functions... */ #define BUS_DMA_BUS2 0x0020 #define BUS_DMA_BUS3 0x0040 #define BUS_DMA_BUS4 0x0080 #define BUS_DMA_READ 0x0100 /* mapping is device -> memory only */ #define BUS_DMA_WRITE 0x0200 /* mapping is memory -> device only */ #define BUS_DMA_NOCACHE 0x0400 /* hint: map non-cached memory */ #define BUS_DMA_ZERO 0x0800 /* zero memory in dmamem_alloc */ #define BUS_DMA_64BIT 0x1000 /* device handles 64bit dva */ /* Forwards needed by prototypes below. */ struct mbuf; struct uio; /* * Operations performed by bus_dmamap_sync(). */ #define BUS_DMASYNC_PREREAD 0x01 #define BUS_DMASYNC_POSTREAD 0x02 #define BUS_DMASYNC_PREWRITE 0x04 #define BUS_DMASYNC_POSTWRITE 0x08 typedef struct _bus_dma_tag *bus_dma_tag_t; typedef struct _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 _bus_dma_segment { bus_addr_t ds_addr; /* DMA address */ bus_size_t ds_len; /* length of transfer */ /* private section */ bus_addr_t _ds_vaddr; /* virtual address */ }; typedef struct _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 _bus_dma_tag { void *_cookie; /* cookie used in the guts */ /* * 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, m, o, l, op) \ (void)((t)->_dmamap_sync ? \ (*(t)->_dmamap_sync)((t), (m), (o), (l), (op)) : (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 _bus_dmamap { /* * PRIVATE MEMBERS: not for use my 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 */ }; #if defined(_LANDISK_BUS_DMA_PRIVATE) 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); #endif /* _LANDISK_BUS_DMA_PRIVATE */ #endif /* _KERNEL */ #endif /* _MACHINE_BUS_H_ */