1139749Simp/*- 2113584Ssimokawa * Copyright (c) 2003 3113584Ssimokawa * Hidetoshi Shimokawa. All rights reserved. 4272214Skan * 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. 21272214Skan * 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. 33272214Skan * 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> 46117126Sscottl#include <sys/lock.h> 47117126Sscottl#include <sys/mutex.h> 48113584Ssimokawa 49113584Ssimokawa#include <sys/bus.h> 50113584Ssimokawa#include <machine/bus.h> 51113584Ssimokawa 52113584Ssimokawa#include <dev/firewire/firewire.h> 53113584Ssimokawa#include <dev/firewire/firewirereg.h> 54113584Ssimokawa#include <dev/firewire/fwdma.h> 55113584Ssimokawa 56113584Ssimokawastatic void 57113584Ssimokawafwdma_map_cb(void *arg, bus_dma_segment_t *segs, int nseg, int error) 58113584Ssimokawa{ 59113584Ssimokawa bus_addr_t *baddr; 60113584Ssimokawa 61113584Ssimokawa if (error) 62113584Ssimokawa printf("fwdma_map_cb: error=%d\n", error); 63113584Ssimokawa baddr = (bus_addr_t *)arg; 64113584Ssimokawa *baddr = segs->ds_addr; 65113584Ssimokawa} 66113584Ssimokawa 67113584Ssimokawavoid * 68113584Ssimokawafwdma_malloc(struct firewire_comm *fc, int alignment, bus_size_t size, 69113584Ssimokawa struct fwdma_alloc *dma, int flag) 70113584Ssimokawa{ 71113584Ssimokawa int err; 72113584Ssimokawa 73113584Ssimokawa dma->v_addr = NULL; 74113584Ssimokawa err = bus_dma_tag_create( 75113584Ssimokawa /*parent*/ fc->dmat, 76113584Ssimokawa /*alignment*/ alignment, 77113584Ssimokawa /*boundary*/ 0, 78113584Ssimokawa /*lowaddr*/ BUS_SPACE_MAXADDR_32BIT, 79113584Ssimokawa /*highaddr*/ BUS_SPACE_MAXADDR, 80113584Ssimokawa /*filter*/NULL, /*filterarg*/NULL, 81113584Ssimokawa /*maxsize*/ size, 82113584Ssimokawa /*nsegments*/ 1, 83113584Ssimokawa /*maxsegsz*/ BUS_SPACE_MAXSIZE_32BIT, 84117126Sscottl /*flags*/ BUS_DMA_ALLOCNOW, 85117228Ssimokawa /*lockfunc*/busdma_lock_mutex, 86170374Ssimokawa /*lockarg*/FW_GMTX(fc), 87117228Ssimokawa &dma->dma_tag); 88113584Ssimokawa if (err) { 89113584Ssimokawa printf("fwdma_malloc: failed(1)\n"); 90272214Skan return (NULL); 91113584Ssimokawa } 92113584Ssimokawa 93113584Ssimokawa err = bus_dmamem_alloc(dma->dma_tag, &dma->v_addr, 94113584Ssimokawa flag, &dma->dma_map); 95113584Ssimokawa if (err) { 96113584Ssimokawa printf("fwdma_malloc: failed(2)\n"); 97168776Spjd /* XXX destroy tag */ 98272214Skan return (NULL); 99113584Ssimokawa } 100113584Ssimokawa 101113584Ssimokawa bus_dmamap_load(dma->dma_tag, dma->dma_map, dma->v_addr, 102113584Ssimokawa size, fwdma_map_cb, &dma->bus_addr, /*flags*/0); 103113584Ssimokawa 104272214Skan return (dma->v_addr); 105113584Ssimokawa} 106113584Ssimokawa 107113584Ssimokawavoid 108113584Ssimokawafwdma_free(struct firewire_comm *fc, struct fwdma_alloc *dma) 109113584Ssimokawa{ 110113584Ssimokawa bus_dmamap_unload(dma->dma_tag, dma->dma_map); 111113584Ssimokawa bus_dmamem_free(dma->dma_tag, dma->v_addr, dma->dma_map); 112113584Ssimokawa bus_dma_tag_destroy(dma->dma_tag); 113113584Ssimokawa} 114113584Ssimokawa 115113584Ssimokawa 116113584Ssimokawavoid * 117113584Ssimokawafwdma_malloc_size(bus_dma_tag_t dmat, bus_dmamap_t *dmamap, 118113584Ssimokawa bus_size_t size, bus_addr_t *bus_addr, int flag) 119113584Ssimokawa{ 120113584Ssimokawa void *v_addr; 121113584Ssimokawa 122113584Ssimokawa if (bus_dmamem_alloc(dmat, &v_addr, flag, dmamap)) { 123113584Ssimokawa printf("fwdma_malloc_size: failed(1)\n"); 124272214Skan return (NULL); 125113584Ssimokawa } 126113584Ssimokawa bus_dmamap_load(dmat, *dmamap, v_addr, size, 127113584Ssimokawa fwdma_map_cb, bus_addr, /*flags*/0); 128272214Skan return (v_addr); 129113584Ssimokawa} 130113584Ssimokawa 131113584Ssimokawavoid 132113584Ssimokawafwdma_free_size(bus_dma_tag_t dmat, bus_dmamap_t dmamap, 133113584Ssimokawa void *vaddr, bus_size_t size) 134113584Ssimokawa{ 135113584Ssimokawa bus_dmamap_unload(dmat, dmamap); 136113584Ssimokawa bus_dmamem_free(dmat, vaddr, dmamap); 137272214Skan} 138113584Ssimokawa 139113584Ssimokawa/* 140113584Ssimokawa * Allocate multisegment dma buffers 141113584Ssimokawa * each segment size is eqaul to ssize except last segment. 142113584Ssimokawa */ 143113584Ssimokawastruct fwdma_alloc_multi * 144113584Ssimokawafwdma_malloc_multiseg(struct firewire_comm *fc, int alignment, 145113584Ssimokawa int esize, int n, int flag) 146113584Ssimokawa{ 147113584Ssimokawa struct fwdma_alloc_multi *am; 148113584Ssimokawa struct fwdma_seg *seg; 149113584Ssimokawa bus_size_t ssize; 150113584Ssimokawa int nseg; 151113584Ssimokawa 152113584Ssimokawa if (esize > PAGE_SIZE) { 153113584Ssimokawa /* round up to PAGE_SIZE */ 154113584Ssimokawa esize = ssize = roundup2(esize, PAGE_SIZE); 155113584Ssimokawa nseg = n; 156113584Ssimokawa } else { 157113584Ssimokawa /* allocate PAGE_SIZE segment for small elements */ 158113584Ssimokawa ssize = rounddown(PAGE_SIZE, esize); 159113584Ssimokawa nseg = howmany(n, ssize / esize); 160113584Ssimokawa } 161113584Ssimokawa am = (struct fwdma_alloc_multi *)malloc(sizeof(struct fwdma_alloc_multi) 162113584Ssimokawa + sizeof(struct fwdma_seg)*nseg, M_FW, M_WAITOK); 163113584Ssimokawa am->ssize = ssize; 164113584Ssimokawa am->esize = esize; 165113584Ssimokawa am->nseg = 0; 166113584Ssimokawa if (bus_dma_tag_create( 167113584Ssimokawa /*parent*/ fc->dmat, 168113584Ssimokawa /*alignment*/ alignment, 169113584Ssimokawa /*boundary*/ 0, 170113584Ssimokawa /*lowaddr*/ BUS_SPACE_MAXADDR_32BIT, 171113584Ssimokawa /*highaddr*/ BUS_SPACE_MAXADDR, 172113584Ssimokawa /*filter*/NULL, /*filterarg*/NULL, 173113584Ssimokawa /*maxsize*/ ssize, 174113584Ssimokawa /*nsegments*/ 1, 175113584Ssimokawa /*maxsegsz*/ BUS_SPACE_MAXSIZE_32BIT, 176117126Sscottl /*flags*/ BUS_DMA_ALLOCNOW, 177117126Sscottl /*lockfunc*/busdma_lock_mutex, 178170374Ssimokawa /*lockarg*/FW_GMTX(fc), 179117228Ssimokawa &am->dma_tag)) { 180113584Ssimokawa printf("fwdma_malloc_multiseg: tag_create failed\n"); 181113584Ssimokawa free(am, M_FW); 182272214Skan return (NULL); 183113584Ssimokawa } 184113584Ssimokawa 185272214Skan for (seg = &am->seg[0]; nseg--; seg++) { 186113584Ssimokawa seg->v_addr = fwdma_malloc_size(am->dma_tag, &seg->dma_map, 187113584Ssimokawa ssize, &seg->bus_addr, flag); 188113584Ssimokawa if (seg->v_addr == NULL) { 189113584Ssimokawa printf("fwdma_malloc_multi: malloc_size failed %d\n", 190113584Ssimokawa am->nseg); 191113584Ssimokawa fwdma_free_multiseg(am); 192272214Skan return (NULL); 193113584Ssimokawa } 194113584Ssimokawa am->nseg++; 195113584Ssimokawa } 196272214Skan return (am); 197113584Ssimokawa} 198113584Ssimokawa 199113584Ssimokawavoid 200113584Ssimokawafwdma_free_multiseg(struct fwdma_alloc_multi *am) 201113584Ssimokawa{ 202113584Ssimokawa struct fwdma_seg *seg; 203113584Ssimokawa 204272214Skan for (seg = &am->seg[0]; am->nseg--; seg++) { 205113584Ssimokawa fwdma_free_size(am->dma_tag, seg->dma_map, 206113584Ssimokawa seg->v_addr, am->ssize); 207113584Ssimokawa } 208113584Ssimokawa bus_dma_tag_destroy(am->dma_tag); 209113584Ssimokawa free(am, M_FW); 210113584Ssimokawa} 211