1139749Simp/*- 2113584Ssimokawa * Copyright (c) 2003 3113584Ssimokawa * Hidetoshi Shimokawa. All rights reserved. 4113584Ssimokawa * 5113584Ssimokawa * Redistribution and use in source and binary forms, with or without 6113584Ssimokawa * modification, are permitted provided that the following conditions 7113584Ssimokawa * are met: 8113584Ssimokawa * 1. Redistributions of source code must retain the above copyright 9113584Ssimokawa * notice, this list of conditions and the following disclaimer. 10113584Ssimokawa * 2. Redistributions in binary form must reproduce the above copyright 11113584Ssimokawa * notice, this list of conditions and the following disclaimer in the 12113584Ssimokawa * documentation and/or other materials provided with the distribution. 13113584Ssimokawa * 3. All advertising materials mentioning features or use of this software 14113584Ssimokawa * must display the following acknowledgement: 15113584Ssimokawa * 16113584Ssimokawa * This product includes software developed by Hidetoshi Shimokawa. 17113584Ssimokawa * 18113584Ssimokawa * 4. Neither the name of the author nor the names of its contributors 19113584Ssimokawa * may be used to endorse or promote products derived from this software 20113584Ssimokawa * without specific prior written permission. 21113584Ssimokawa * 22113584Ssimokawa * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23113584Ssimokawa * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24113584Ssimokawa * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25113584Ssimokawa * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26113584Ssimokawa * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27113584Ssimokawa * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28113584Ssimokawa * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29113584Ssimokawa * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30113584Ssimokawa * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31113584Ssimokawa * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32113584Ssimokawa * SUCH DAMAGE. 33113584Ssimokawa * 34113584Ssimokawa */ 35119418Sobrien 36127468Ssimokawa#ifdef __FreeBSD__ 37119418Sobrien#include <sys/cdefs.h> 38119418Sobrien__FBSDID("$FreeBSD$"); 39127468Ssimokawa#endif 40127468Ssimokawa 41113584Ssimokawa#include <sys/param.h> 42113584Ssimokawa#include <sys/systm.h> 43113584Ssimokawa#include <sys/types.h> 44113584Ssimokawa#include <sys/kernel.h> 45113584Ssimokawa#include <sys/malloc.h> 46127468Ssimokawa#if defined(__FreeBSD__) && __FreeBSD_version >= 501102 47117126Sscottl#include <sys/lock.h> 48117126Sscottl#include <sys/mutex.h> 49117732Ssimokawa#endif 50113584Ssimokawa 51113584Ssimokawa#include <sys/bus.h> 52113584Ssimokawa#include <machine/bus.h> 53113584Ssimokawa 54127468Ssimokawa#ifdef __DragonFly__ 55127468Ssimokawa#include <bus/firewire/firewire.h> 56127468Ssimokawa#include <bus/firewire/firewirereg.h> 57127468Ssimokawa#include <bus/firewire/fwdma.h> 58127468Ssimokawa#else 59113584Ssimokawa#include <dev/firewire/firewire.h> 60113584Ssimokawa#include <dev/firewire/firewirereg.h> 61113584Ssimokawa#include <dev/firewire/fwdma.h> 62127468Ssimokawa#endif 63113584Ssimokawa 64113584Ssimokawastatic void 65113584Ssimokawafwdma_map_cb(void *arg, bus_dma_segment_t *segs, int nseg, int error) 66113584Ssimokawa{ 67113584Ssimokawa bus_addr_t *baddr; 68113584Ssimokawa 69113584Ssimokawa if (error) 70113584Ssimokawa printf("fwdma_map_cb: error=%d\n", error); 71113584Ssimokawa baddr = (bus_addr_t *)arg; 72113584Ssimokawa *baddr = segs->ds_addr; 73113584Ssimokawa} 74113584Ssimokawa 75113584Ssimokawavoid * 76113584Ssimokawafwdma_malloc(struct firewire_comm *fc, int alignment, bus_size_t size, 77113584Ssimokawa struct fwdma_alloc *dma, int flag) 78113584Ssimokawa{ 79113584Ssimokawa int err; 80113584Ssimokawa 81113584Ssimokawa dma->v_addr = NULL; 82113584Ssimokawa err = bus_dma_tag_create( 83113584Ssimokawa /*parent*/ fc->dmat, 84113584Ssimokawa /*alignment*/ alignment, 85113584Ssimokawa /*boundary*/ 0, 86113584Ssimokawa /*lowaddr*/ BUS_SPACE_MAXADDR_32BIT, 87113584Ssimokawa /*highaddr*/ BUS_SPACE_MAXADDR, 88113584Ssimokawa /*filter*/NULL, /*filterarg*/NULL, 89113584Ssimokawa /*maxsize*/ size, 90113584Ssimokawa /*nsegments*/ 1, 91113584Ssimokawa /*maxsegsz*/ BUS_SPACE_MAXSIZE_32BIT, 92117126Sscottl /*flags*/ BUS_DMA_ALLOCNOW, 93127468Ssimokawa#if defined(__FreeBSD__) && __FreeBSD_version >= 501102 94117228Ssimokawa /*lockfunc*/busdma_lock_mutex, 95170374Ssimokawa /*lockarg*/FW_GMTX(fc), 96117228Ssimokawa#endif 97117228Ssimokawa &dma->dma_tag); 98113584Ssimokawa if (err) { 99113584Ssimokawa printf("fwdma_malloc: failed(1)\n"); 100113584Ssimokawa return(NULL); 101113584Ssimokawa } 102113584Ssimokawa 103113584Ssimokawa err = bus_dmamem_alloc(dma->dma_tag, &dma->v_addr, 104113584Ssimokawa flag, &dma->dma_map); 105113584Ssimokawa if (err) { 106113584Ssimokawa printf("fwdma_malloc: failed(2)\n"); 107168776Spjd /* XXX destroy tag */ 108113584Ssimokawa return(NULL); 109113584Ssimokawa } 110113584Ssimokawa 111113584Ssimokawa bus_dmamap_load(dma->dma_tag, dma->dma_map, dma->v_addr, 112113584Ssimokawa size, fwdma_map_cb, &dma->bus_addr, /*flags*/0); 113113584Ssimokawa 114113584Ssimokawa return(dma->v_addr); 115113584Ssimokawa} 116113584Ssimokawa 117113584Ssimokawavoid 118113584Ssimokawafwdma_free(struct firewire_comm *fc, struct fwdma_alloc *dma) 119113584Ssimokawa{ 120113584Ssimokawa bus_dmamap_unload(dma->dma_tag, dma->dma_map); 121113584Ssimokawa bus_dmamem_free(dma->dma_tag, dma->v_addr, dma->dma_map); 122113584Ssimokawa bus_dma_tag_destroy(dma->dma_tag); 123113584Ssimokawa} 124113584Ssimokawa 125113584Ssimokawa 126113584Ssimokawavoid * 127113584Ssimokawafwdma_malloc_size(bus_dma_tag_t dmat, bus_dmamap_t *dmamap, 128113584Ssimokawa bus_size_t size, bus_addr_t *bus_addr, int flag) 129113584Ssimokawa{ 130113584Ssimokawa void *v_addr; 131113584Ssimokawa 132113584Ssimokawa if (bus_dmamem_alloc(dmat, &v_addr, flag, dmamap)) { 133113584Ssimokawa printf("fwdma_malloc_size: failed(1)\n"); 134113584Ssimokawa return(NULL); 135113584Ssimokawa } 136113584Ssimokawa bus_dmamap_load(dmat, *dmamap, v_addr, size, 137113584Ssimokawa fwdma_map_cb, bus_addr, /*flags*/0); 138113584Ssimokawa return(v_addr); 139113584Ssimokawa} 140113584Ssimokawa 141113584Ssimokawavoid 142113584Ssimokawafwdma_free_size(bus_dma_tag_t dmat, bus_dmamap_t dmamap, 143113584Ssimokawa void *vaddr, bus_size_t size) 144113584Ssimokawa{ 145113584Ssimokawa bus_dmamap_unload(dmat, dmamap); 146113584Ssimokawa bus_dmamem_free(dmat, vaddr, dmamap); 147113584Ssimokawa} 148113584Ssimokawa 149113584Ssimokawa/* 150113584Ssimokawa * Allocate multisegment dma buffers 151113584Ssimokawa * each segment size is eqaul to ssize except last segment. 152113584Ssimokawa */ 153113584Ssimokawastruct fwdma_alloc_multi * 154113584Ssimokawafwdma_malloc_multiseg(struct firewire_comm *fc, int alignment, 155113584Ssimokawa int esize, int n, int flag) 156113584Ssimokawa{ 157113584Ssimokawa struct fwdma_alloc_multi *am; 158113584Ssimokawa struct fwdma_seg *seg; 159113584Ssimokawa bus_size_t ssize; 160113584Ssimokawa int nseg; 161113584Ssimokawa 162113584Ssimokawa if (esize > PAGE_SIZE) { 163113584Ssimokawa /* round up to PAGE_SIZE */ 164113584Ssimokawa esize = ssize = roundup2(esize, PAGE_SIZE); 165113584Ssimokawa nseg = n; 166113584Ssimokawa } else { 167113584Ssimokawa /* allocate PAGE_SIZE segment for small elements */ 168113584Ssimokawa ssize = rounddown(PAGE_SIZE, esize); 169113584Ssimokawa nseg = howmany(n, ssize / esize); 170113584Ssimokawa } 171113584Ssimokawa am = (struct fwdma_alloc_multi *)malloc(sizeof(struct fwdma_alloc_multi) 172113584Ssimokawa + sizeof(struct fwdma_seg)*nseg, M_FW, M_WAITOK); 173113584Ssimokawa if (am == NULL) { 174113584Ssimokawa printf("fwdma_malloc_multiseg: malloc failed\n"); 175113584Ssimokawa return(NULL); 176113584Ssimokawa } 177113584Ssimokawa am->ssize = ssize; 178113584Ssimokawa am->esize = esize; 179113584Ssimokawa am->nseg = 0; 180113584Ssimokawa if (bus_dma_tag_create( 181113584Ssimokawa /*parent*/ fc->dmat, 182113584Ssimokawa /*alignment*/ alignment, 183113584Ssimokawa /*boundary*/ 0, 184113584Ssimokawa /*lowaddr*/ BUS_SPACE_MAXADDR_32BIT, 185113584Ssimokawa /*highaddr*/ BUS_SPACE_MAXADDR, 186113584Ssimokawa /*filter*/NULL, /*filterarg*/NULL, 187113584Ssimokawa /*maxsize*/ ssize, 188113584Ssimokawa /*nsegments*/ 1, 189113584Ssimokawa /*maxsegsz*/ BUS_SPACE_MAXSIZE_32BIT, 190117126Sscottl /*flags*/ BUS_DMA_ALLOCNOW, 191127468Ssimokawa#if defined(__FreeBSD__) && __FreeBSD_version >= 501102 192117126Sscottl /*lockfunc*/busdma_lock_mutex, 193170374Ssimokawa /*lockarg*/FW_GMTX(fc), 194117228Ssimokawa#endif 195117228Ssimokawa &am->dma_tag)) { 196113584Ssimokawa printf("fwdma_malloc_multiseg: tag_create failed\n"); 197113584Ssimokawa free(am, M_FW); 198113584Ssimokawa return(NULL); 199113584Ssimokawa } 200113584Ssimokawa 201113584Ssimokawa#if 0 202127468Ssimokawa#if defined(__DragonFly__) || __FreeBSD_version < 500000 203113584Ssimokawa printf("malloc_multi: ssize=%d nseg=%d\n", ssize, nseg); 204113584Ssimokawa#else 205113584Ssimokawa printf("malloc_multi: ssize=%td nseg=%d\n", ssize, nseg); 206113584Ssimokawa#endif 207113584Ssimokawa#endif 208113584Ssimokawa for (seg = &am->seg[0]; nseg --; seg ++) { 209113584Ssimokawa seg->v_addr = fwdma_malloc_size(am->dma_tag, &seg->dma_map, 210113584Ssimokawa ssize, &seg->bus_addr, flag); 211113584Ssimokawa if (seg->v_addr == NULL) { 212113584Ssimokawa printf("fwdma_malloc_multi: malloc_size failed %d\n", 213113584Ssimokawa am->nseg); 214113584Ssimokawa fwdma_free_multiseg(am); 215113584Ssimokawa return(NULL); 216113584Ssimokawa } 217113584Ssimokawa am->nseg++; 218113584Ssimokawa } 219113584Ssimokawa return(am); 220113584Ssimokawa} 221113584Ssimokawa 222113584Ssimokawavoid 223113584Ssimokawafwdma_free_multiseg(struct fwdma_alloc_multi *am) 224113584Ssimokawa{ 225113584Ssimokawa struct fwdma_seg *seg; 226113584Ssimokawa 227113584Ssimokawa for (seg = &am->seg[0]; am->nseg --; seg ++) { 228113584Ssimokawa fwdma_free_size(am->dma_tag, seg->dma_map, 229113584Ssimokawa seg->v_addr, am->ssize); 230113584Ssimokawa } 231113584Ssimokawa bus_dma_tag_destroy(am->dma_tag); 232113584Ssimokawa free(am, M_FW); 233113584Ssimokawa} 234