1/*-
2 * Copyright (c) 1998 - 2007 S�ren Schmidt <sos@FreeBSD.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer,
10 * without modification, immediately at the beginning of the file.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 */
26
27#include <sys/cdefs.h>
| 1/*-
2 * Copyright (c) 1998 - 2007 S�ren Schmidt <sos@FreeBSD.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer,
10 * without modification, immediately at the beginning of the file.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 */
26
27#include <sys/cdefs.h>
|
28__FBSDID("$FreeBSD: head/sys/dev/ata/ata-dma.c 168493 2007-04-08 15:31:39Z sos $");
| 28__FBSDID("$FreeBSD: head/sys/dev/ata/ata-dma.c 168500 2007-04-08 19:18:51Z sos $");
|
29
30#include <sys/param.h>
31#include <sys/systm.h>
32#include <sys/ata.h>
33#include <sys/kernel.h>
34#include <sys/endian.h>
35#include <sys/malloc.h>
36#include <sys/lock.h>
37#include <sys/sema.h>
38#include <sys/taskqueue.h>
39#include <vm/uma.h>
40#include <sys/bus.h>
41#include <machine/bus.h>
42#include <sys/rman.h>
43#include <dev/pci/pcivar.h>
44#include <dev/ata/ata-all.h>
45#include <dev/ata/ata-pci.h>
46
47/* prototypes */
48static void ata_dmaalloc(device_t);
49static void ata_dmafree(device_t);
50static void ata_dmasetprd(void *, bus_dma_segment_t *, int, int);
51static int ata_dmaload(device_t, caddr_t, int32_t, int, void *, int *);
52static int ata_dmaunload(device_t);
53
54/* local vars */
55static MALLOC_DEFINE(M_ATADMA, "ata_dma", "ATA driver DMA");
56
57/* misc defines */
58#define MAXTABSZ PAGE_SIZE
59#define MAXWSPCSZ PAGE_SIZE*2
60
61struct ata_dc_cb_args {
62 bus_addr_t maddr;
63 int error;
64};
65
66void
67ata_dmainit(device_t dev)
68{
69 struct ata_channel *ch = device_get_softc(dev);
70
71 if ((ch->dma = malloc(sizeof(struct ata_dma), M_ATADMA, M_NOWAIT|M_ZERO))) {
72 ch->dma->alloc = ata_dmaalloc;
73 ch->dma->free = ata_dmafree;
74 ch->dma->setprd = ata_dmasetprd;
75 ch->dma->load = ata_dmaload;
76 ch->dma->unload = ata_dmaunload;
77 ch->dma->alignment = 2;
78 ch->dma->boundary = 128 * DEV_BSIZE;
79 ch->dma->segsize = 128 * DEV_BSIZE;
80 ch->dma->max_iosize = 128 * DEV_BSIZE;
| 29
30#include <sys/param.h>
31#include <sys/systm.h>
32#include <sys/ata.h>
33#include <sys/kernel.h>
34#include <sys/endian.h>
35#include <sys/malloc.h>
36#include <sys/lock.h>
37#include <sys/sema.h>
38#include <sys/taskqueue.h>
39#include <vm/uma.h>
40#include <sys/bus.h>
41#include <machine/bus.h>
42#include <sys/rman.h>
43#include <dev/pci/pcivar.h>
44#include <dev/ata/ata-all.h>
45#include <dev/ata/ata-pci.h>
46
47/* prototypes */
48static void ata_dmaalloc(device_t);
49static void ata_dmafree(device_t);
50static void ata_dmasetprd(void *, bus_dma_segment_t *, int, int);
51static int ata_dmaload(device_t, caddr_t, int32_t, int, void *, int *);
52static int ata_dmaunload(device_t);
53
54/* local vars */
55static MALLOC_DEFINE(M_ATADMA, "ata_dma", "ATA driver DMA");
56
57/* misc defines */
58#define MAXTABSZ PAGE_SIZE
59#define MAXWSPCSZ PAGE_SIZE*2
60
61struct ata_dc_cb_args {
62 bus_addr_t maddr;
63 int error;
64};
65
66void
67ata_dmainit(device_t dev)
68{
69 struct ata_channel *ch = device_get_softc(dev);
70
71 if ((ch->dma = malloc(sizeof(struct ata_dma), M_ATADMA, M_NOWAIT|M_ZERO))) {
72 ch->dma->alloc = ata_dmaalloc;
73 ch->dma->free = ata_dmafree;
74 ch->dma->setprd = ata_dmasetprd;
75 ch->dma->load = ata_dmaload;
76 ch->dma->unload = ata_dmaunload;
77 ch->dma->alignment = 2;
78 ch->dma->boundary = 128 * DEV_BSIZE;
79 ch->dma->segsize = 128 * DEV_BSIZE;
80 ch->dma->max_iosize = 128 * DEV_BSIZE;
|
| 81 ch->dma->max_address = BUS_SPACE_MAXADDR_32BIT;
|
81 }
82}
83
84static void
85ata_dmasetupc_cb(void *xsc, bus_dma_segment_t *segs, int nsegs, int error)
86{
87 struct ata_dc_cb_args *cba = (struct ata_dc_cb_args *)xsc;
88
89 if (!(cba->error = error))
90 cba->maddr = segs[0].ds_addr;
91}
92
93static void
94ata_dmaalloc(device_t dev)
95{
96 struct ata_channel *ch = device_get_softc(dev);
97 struct ata_dc_cb_args ccba;
| 82 }
83}
84
85static void
86ata_dmasetupc_cb(void *xsc, bus_dma_segment_t *segs, int nsegs, int error)
87{
88 struct ata_dc_cb_args *cba = (struct ata_dc_cb_args *)xsc;
89
90 if (!(cba->error = error))
91 cba->maddr = segs[0].ds_addr;
92}
93
94static void
95ata_dmaalloc(device_t dev)
96{
97 struct ata_channel *ch = device_get_softc(dev);
98 struct ata_dc_cb_args ccba;
|
98 int maxaddr = (ch->dma->flags & ATA_DMA_64BIT ?
99 BUS_SPACE_MAXADDR : BUS_SPACE_MAXADDR_32BIT);
| |
100
101 if (bus_dma_tag_create(bus_get_dma_tag(dev), ch->dma->alignment, 0,
| 99
100 if (bus_dma_tag_create(bus_get_dma_tag(dev), ch->dma->alignment, 0,
|
102 maxaddr, BUS_SPACE_MAXADDR,
| 101 ch->dma->max_address, BUS_SPACE_MAXADDR,
|
103 NULL, NULL, ch->dma->max_iosize,
104 ATA_DMA_ENTRIES, ch->dma->segsize,
105 0, NULL, NULL, &ch->dma->dmatag))
106 goto error;
107
108 if (bus_dma_tag_create(ch->dma->dmatag, PAGE_SIZE, PAGE_SIZE,
| 102 NULL, NULL, ch->dma->max_iosize,
103 ATA_DMA_ENTRIES, ch->dma->segsize,
104 0, NULL, NULL, &ch->dma->dmatag))
105 goto error;
106
107 if (bus_dma_tag_create(ch->dma->dmatag, PAGE_SIZE, PAGE_SIZE,
|
109 maxaddr, BUS_SPACE_MAXADDR,
| 108 ch->dma->max_address, BUS_SPACE_MAXADDR,
|
110 NULL, NULL, MAXTABSZ, 1, MAXTABSZ,
111 0, NULL, NULL, &ch->dma->sg_tag))
112 goto error;
113
114 if (bus_dma_tag_create(ch->dma->dmatag,ch->dma->alignment,ch->dma->boundary,
| 109 NULL, NULL, MAXTABSZ, 1, MAXTABSZ,
110 0, NULL, NULL, &ch->dma->sg_tag))
111 goto error;
112
113 if (bus_dma_tag_create(ch->dma->dmatag,ch->dma->alignment,ch->dma->boundary,
|
115 maxaddr, BUS_SPACE_MAXADDR,
| 114 ch->dma->max_address, BUS_SPACE_MAXADDR,
|
116 NULL, NULL, ch->dma->max_iosize,
117 ATA_DMA_ENTRIES, ch->dma->segsize,
118 0, NULL, NULL, &ch->dma->data_tag))
119 goto error;
120
121 if (bus_dmamem_alloc(ch->dma->sg_tag, (void **)&ch->dma->sg, 0,
122 &ch->dma->sg_map))
123 goto error;
124
125 if (bus_dmamap_load(ch->dma->sg_tag, ch->dma->sg_map, ch->dma->sg,
126 MAXTABSZ, ata_dmasetupc_cb, &ccba, 0) || ccba.error) {
127 bus_dmamem_free(ch->dma->sg_tag, ch->dma->sg, ch->dma->sg_map);
128 goto error;
129 }
130 ch->dma->sg_bus = ccba.maddr;
131
132 if (bus_dmamap_create(ch->dma->data_tag, 0, &ch->dma->data_map))
133 goto error;
134
135 if (bus_dma_tag_create(ch->dma->dmatag, PAGE_SIZE, 64 * 1024,
| 115 NULL, NULL, ch->dma->max_iosize,
116 ATA_DMA_ENTRIES, ch->dma->segsize,
117 0, NULL, NULL, &ch->dma->data_tag))
118 goto error;
119
120 if (bus_dmamem_alloc(ch->dma->sg_tag, (void **)&ch->dma->sg, 0,
121 &ch->dma->sg_map))
122 goto error;
123
124 if (bus_dmamap_load(ch->dma->sg_tag, ch->dma->sg_map, ch->dma->sg,
125 MAXTABSZ, ata_dmasetupc_cb, &ccba, 0) || ccba.error) {
126 bus_dmamem_free(ch->dma->sg_tag, ch->dma->sg, ch->dma->sg_map);
127 goto error;
128 }
129 ch->dma->sg_bus = ccba.maddr;
130
131 if (bus_dmamap_create(ch->dma->data_tag, 0, &ch->dma->data_map))
132 goto error;
133
134 if (bus_dma_tag_create(ch->dma->dmatag, PAGE_SIZE, 64 * 1024,
|
136 maxaddr, BUS_SPACE_MAXADDR,
| 135 ch->dma->max_address, BUS_SPACE_MAXADDR,
|
137 NULL, NULL, MAXWSPCSZ, 1, MAXWSPCSZ,
138 0, NULL, NULL, &ch->dma->work_tag))
139 goto error;
140
141 if (bus_dmamem_alloc(ch->dma->work_tag, (void **)&ch->dma->work, 0,
142 &ch->dma->work_map))
143 goto error;
144
145 if (bus_dmamap_load(ch->dma->work_tag, ch->dma->work_map,ch->dma->work,
146 MAXWSPCSZ, ata_dmasetupc_cb, &ccba, 0) || ccba.error) {
147 bus_dmamem_free(ch->dma->work_tag,ch->dma->work, ch->dma->work_map);
148 goto error;
149 }
150 ch->dma->work_bus = ccba.maddr;
151
152 return;
153
154error:
155 device_printf(dev, "WARNING - DMA allocation failed, disabling DMA\n");
156 ata_dmafree(dev);
157 free(ch->dma, M_ATADMA);
158 ch->dma = NULL;
159}
160
161static void
162ata_dmafree(device_t dev)
163{
164 struct ata_channel *ch = device_get_softc(dev);
165
166 if (ch->dma->work_bus) {
167 bus_dmamap_unload(ch->dma->work_tag, ch->dma->work_map);
168 bus_dmamem_free(ch->dma->work_tag, ch->dma->work, ch->dma->work_map);
169 ch->dma->work_bus = 0;
170 ch->dma->work_map = NULL;
171 ch->dma->work = NULL;
172 }
173 if (ch->dma->work_tag) {
174 bus_dma_tag_destroy(ch->dma->work_tag);
175 ch->dma->work_tag = NULL;
176 }
177 if (ch->dma->sg_bus) {
178 bus_dmamap_unload(ch->dma->sg_tag, ch->dma->sg_map);
179 bus_dmamem_free(ch->dma->sg_tag, ch->dma->sg, ch->dma->sg_map);
180 ch->dma->sg_bus = 0;
181 ch->dma->sg_map = NULL;
182 ch->dma->sg = NULL;
183 }
184 if (ch->dma->data_map) {
185 bus_dmamap_destroy(ch->dma->data_tag, ch->dma->data_map);
186 ch->dma->data_map = NULL;
187 }
188 if (ch->dma->sg_tag) {
189 bus_dma_tag_destroy(ch->dma->sg_tag);
190 ch->dma->sg_tag = NULL;
191 }
192 if (ch->dma->data_tag) {
193 bus_dma_tag_destroy(ch->dma->data_tag);
194 ch->dma->data_tag = NULL;
195 }
196 if (ch->dma->dmatag) {
197 bus_dma_tag_destroy(ch->dma->dmatag);
198 ch->dma->dmatag = NULL;
199 }
200}
201
202static void
203ata_dmasetprd(void *xsc, bus_dma_segment_t *segs, int nsegs, int error)
204{
205 struct ata_dmasetprd_args *args = xsc;
206 struct ata_dma_prdentry *prd = args->dmatab;
207 int i;
208
209 if ((args->error = error))
210 return;
211
212 for (i = 0; i < nsegs; i++) {
213 prd[i].addr = htole32(segs[i].ds_addr);
214 prd[i].count = htole32(segs[i].ds_len);
215 }
216 prd[i - 1].count |= htole32(ATA_DMA_EOT);
217 args->nsegs = nsegs;
218}
219
220static int
221ata_dmaload(device_t dev, caddr_t data, int32_t count, int dir,
222 void *addr, int *entries)
223{
224 struct ata_channel *ch = device_get_softc(dev);
225 struct ata_dmasetprd_args cba;
226 int error;
227
228 if (ch->dma->flags & ATA_DMA_LOADED) {
229 device_printf(dev, "FAILURE - already active DMA on this device\n");
230 return EIO;
231 }
232 if (!count) {
233 device_printf(dev, "FAILURE - zero length DMA transfer attempted\n");
234 return EIO;
235 }
236 if (((uintptr_t)data & (ch->dma->alignment - 1)) ||
237 (count & (ch->dma->alignment - 1))) {
238 device_printf(dev, "FAILURE - non aligned DMA transfer attempted\n");
239 return EIO;
240 }
241 if (count > ch->dma->max_iosize) {
242 device_printf(dev, "FAILURE - oversized DMA transfer attempt %d > %d\n",
243 count, ch->dma->max_iosize);
244 return EIO;
245 }
246
247 cba.dmatab = addr;
248
249 if ((error = bus_dmamap_load(ch->dma->data_tag, ch->dma->data_map,
250 data, count, ch->dma->setprd, &cba,
251 BUS_DMA_NOWAIT)) || (error = cba.error))
252 return error;
253
254 *entries = cba.nsegs;
255
256 bus_dmamap_sync(ch->dma->sg_tag, ch->dma->sg_map, BUS_DMASYNC_PREWRITE);
257
258 bus_dmamap_sync(ch->dma->data_tag, ch->dma->data_map,
259 dir ? BUS_DMASYNC_PREREAD : BUS_DMASYNC_PREWRITE);
260
261 ch->dma->cur_iosize = count;
262 ch->dma->flags &= ATA_DMA_READ;
263 ch->dma->flags |= dir ? (ATA_DMA_LOADED | ATA_DMA_READ) : ATA_DMA_LOADED;
264 return 0;
265}
266
267int
268ata_dmaunload(device_t dev)
269{
270 struct ata_channel *ch = device_get_softc(dev);
271
272 if (ch->dma->flags & ATA_DMA_LOADED) {
273 bus_dmamap_sync(ch->dma->sg_tag, ch->dma->sg_map,
274 BUS_DMASYNC_POSTWRITE);
275
276 bus_dmamap_sync(ch->dma->data_tag, ch->dma->data_map,
277 (ch->dma->flags & ATA_DMA_READ) ?
278 BUS_DMASYNC_POSTREAD : BUS_DMASYNC_POSTWRITE);
279 bus_dmamap_unload(ch->dma->data_tag, ch->dma->data_map);
280
281 ch->dma->cur_iosize = 0;
282 ch->dma->flags &= ~ATA_DMA_LOADED;
283 }
284 return 0;
285}
| 136 NULL, NULL, MAXWSPCSZ, 1, MAXWSPCSZ,
137 0, NULL, NULL, &ch->dma->work_tag))
138 goto error;
139
140 if (bus_dmamem_alloc(ch->dma->work_tag, (void **)&ch->dma->work, 0,
141 &ch->dma->work_map))
142 goto error;
143
144 if (bus_dmamap_load(ch->dma->work_tag, ch->dma->work_map,ch->dma->work,
145 MAXWSPCSZ, ata_dmasetupc_cb, &ccba, 0) || ccba.error) {
146 bus_dmamem_free(ch->dma->work_tag,ch->dma->work, ch->dma->work_map);
147 goto error;
148 }
149 ch->dma->work_bus = ccba.maddr;
150
151 return;
152
153error:
154 device_printf(dev, "WARNING - DMA allocation failed, disabling DMA\n");
155 ata_dmafree(dev);
156 free(ch->dma, M_ATADMA);
157 ch->dma = NULL;
158}
159
160static void
161ata_dmafree(device_t dev)
162{
163 struct ata_channel *ch = device_get_softc(dev);
164
165 if (ch->dma->work_bus) {
166 bus_dmamap_unload(ch->dma->work_tag, ch->dma->work_map);
167 bus_dmamem_free(ch->dma->work_tag, ch->dma->work, ch->dma->work_map);
168 ch->dma->work_bus = 0;
169 ch->dma->work_map = NULL;
170 ch->dma->work = NULL;
171 }
172 if (ch->dma->work_tag) {
173 bus_dma_tag_destroy(ch->dma->work_tag);
174 ch->dma->work_tag = NULL;
175 }
176 if (ch->dma->sg_bus) {
177 bus_dmamap_unload(ch->dma->sg_tag, ch->dma->sg_map);
178 bus_dmamem_free(ch->dma->sg_tag, ch->dma->sg, ch->dma->sg_map);
179 ch->dma->sg_bus = 0;
180 ch->dma->sg_map = NULL;
181 ch->dma->sg = NULL;
182 }
183 if (ch->dma->data_map) {
184 bus_dmamap_destroy(ch->dma->data_tag, ch->dma->data_map);
185 ch->dma->data_map = NULL;
186 }
187 if (ch->dma->sg_tag) {
188 bus_dma_tag_destroy(ch->dma->sg_tag);
189 ch->dma->sg_tag = NULL;
190 }
191 if (ch->dma->data_tag) {
192 bus_dma_tag_destroy(ch->dma->data_tag);
193 ch->dma->data_tag = NULL;
194 }
195 if (ch->dma->dmatag) {
196 bus_dma_tag_destroy(ch->dma->dmatag);
197 ch->dma->dmatag = NULL;
198 }
199}
200
201static void
202ata_dmasetprd(void *xsc, bus_dma_segment_t *segs, int nsegs, int error)
203{
204 struct ata_dmasetprd_args *args = xsc;
205 struct ata_dma_prdentry *prd = args->dmatab;
206 int i;
207
208 if ((args->error = error))
209 return;
210
211 for (i = 0; i < nsegs; i++) {
212 prd[i].addr = htole32(segs[i].ds_addr);
213 prd[i].count = htole32(segs[i].ds_len);
214 }
215 prd[i - 1].count |= htole32(ATA_DMA_EOT);
216 args->nsegs = nsegs;
217}
218
219static int
220ata_dmaload(device_t dev, caddr_t data, int32_t count, int dir,
221 void *addr, int *entries)
222{
223 struct ata_channel *ch = device_get_softc(dev);
224 struct ata_dmasetprd_args cba;
225 int error;
226
227 if (ch->dma->flags & ATA_DMA_LOADED) {
228 device_printf(dev, "FAILURE - already active DMA on this device\n");
229 return EIO;
230 }
231 if (!count) {
232 device_printf(dev, "FAILURE - zero length DMA transfer attempted\n");
233 return EIO;
234 }
235 if (((uintptr_t)data & (ch->dma->alignment - 1)) ||
236 (count & (ch->dma->alignment - 1))) {
237 device_printf(dev, "FAILURE - non aligned DMA transfer attempted\n");
238 return EIO;
239 }
240 if (count > ch->dma->max_iosize) {
241 device_printf(dev, "FAILURE - oversized DMA transfer attempt %d > %d\n",
242 count, ch->dma->max_iosize);
243 return EIO;
244 }
245
246 cba.dmatab = addr;
247
248 if ((error = bus_dmamap_load(ch->dma->data_tag, ch->dma->data_map,
249 data, count, ch->dma->setprd, &cba,
250 BUS_DMA_NOWAIT)) || (error = cba.error))
251 return error;
252
253 *entries = cba.nsegs;
254
255 bus_dmamap_sync(ch->dma->sg_tag, ch->dma->sg_map, BUS_DMASYNC_PREWRITE);
256
257 bus_dmamap_sync(ch->dma->data_tag, ch->dma->data_map,
258 dir ? BUS_DMASYNC_PREREAD : BUS_DMASYNC_PREWRITE);
259
260 ch->dma->cur_iosize = count;
261 ch->dma->flags &= ATA_DMA_READ;
262 ch->dma->flags |= dir ? (ATA_DMA_LOADED | ATA_DMA_READ) : ATA_DMA_LOADED;
263 return 0;
264}
265
266int
267ata_dmaunload(device_t dev)
268{
269 struct ata_channel *ch = device_get_softc(dev);
270
271 if (ch->dma->flags & ATA_DMA_LOADED) {
272 bus_dmamap_sync(ch->dma->sg_tag, ch->dma->sg_map,
273 BUS_DMASYNC_POSTWRITE);
274
275 bus_dmamap_sync(ch->dma->data_tag, ch->dma->data_map,
276 (ch->dma->flags & ATA_DMA_READ) ?
277 BUS_DMASYNC_POSTREAD : BUS_DMASYNC_POSTWRITE);
278 bus_dmamap_unload(ch->dma->data_tag, ch->dma->data_map);
279
280 ch->dma->cur_iosize = 0;
281 ch->dma->flags &= ~ATA_DMA_LOADED;
282 }
283 return 0;
284}
|