FreeBSD/Linux Kernel Cross Reference
sys/dev/ips/ips_disk.c
1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3 *
4 * Written by: David Jeffery
5 * Copyright (c) 2002 Adaptec Inc.
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 */
29
30 #include <sys/cdefs.h>
31 __FBSDID("$FreeBSD$");
32
33 #include <dev/ips/ipsreg.h>
34 #include <dev/ips/ips.h>
35 #include <dev/ips/ips_disk.h>
36 #include <sys/stat.h>
37
38 static int ipsd_probe(device_t dev);
39 static int ipsd_attach(device_t dev);
40 static int ipsd_detach(device_t dev);
41
42 static int ipsd_dump(void *arg, void *virtual, vm_offset_t physical,
43 off_t offset, size_t length);
44 static void ipsd_dump_map_sg(void *arg, bus_dma_segment_t *segs, int nsegs,
45 int error);
46 static void ipsd_dump_block_complete(ips_command_t *command);
47
48 static disk_open_t ipsd_open;
49 static disk_close_t ipsd_close;
50 static disk_strategy_t ipsd_strategy;
51
52 static device_method_t ipsd_methods[] = {
53 DEVMETHOD(device_probe, ipsd_probe),
54 DEVMETHOD(device_attach, ipsd_attach),
55 DEVMETHOD(device_detach, ipsd_detach),
56 { 0, 0 }
57 };
58
59 static driver_t ipsd_driver = {
60 "ipsd",
61 ipsd_methods,
62 sizeof(ipsdisk_softc_t)
63 };
64
65 static devclass_t ipsd_devclass;
66 DRIVER_MODULE(ipsd, ips, ipsd_driver, ipsd_devclass, 0, 0);
67
68 /* handle opening of disk device. It must set up all
69 information about the geometry and size of the disk */
70 static int ipsd_open(struct disk *dp)
71 {
72 ipsdisk_softc_t *dsc = dp->d_drv1;
73
74 dsc->state |= IPS_DEV_OPEN;
75 DEVICE_PRINTF(2, dsc->dev, "I'm open\n");
76 return 0;
77 }
78
79 static int ipsd_close(struct disk *dp)
80 {
81 ipsdisk_softc_t *dsc = dp->d_drv1;
82 dsc->state &= ~IPS_DEV_OPEN;
83 DEVICE_PRINTF(2, dsc->dev, "I'm closed for the day\n");
84 return 0;
85 }
86
87 /* ipsd_finish is called to clean up and return a completed IO request */
88 void ipsd_finish(struct bio *iobuf)
89 {
90 ipsdisk_softc_t *dsc;
91 dsc = iobuf->bio_disk->d_drv1;
92
93 if (iobuf->bio_flags & BIO_ERROR) {
94 ipsdisk_softc_t *dsc;
95 dsc = iobuf->bio_disk->d_drv1;
96 device_printf(dsc->dev, "iobuf error %d\n", iobuf->bio_error);
97 } else
98 iobuf->bio_resid = 0;
99
100 biodone(iobuf);
101 ips_start_io_request(dsc->sc);
102 }
103
104
105 static void ipsd_strategy(struct bio *iobuf)
106 {
107 ipsdisk_softc_t *dsc;
108
109 dsc = iobuf->bio_disk->d_drv1;
110 DEVICE_PRINTF(8,dsc->dev,"in strategy\n");
111 iobuf->bio_driver1 = (void *)(uintptr_t)dsc->sc->drives[dsc->disk_number].drivenum;
112
113 if ((iobuf->bio_cmd != BIO_READ) &&
114 (iobuf->bio_cmd != BIO_WRITE)) {
115 biofinish(iobuf, NULL, EOPNOTSUPP);
116 return;
117 }
118
119 mtx_lock(&dsc->sc->queue_mtx);
120 bioq_insert_tail(&dsc->sc->queue, iobuf);
121 ips_start_io_request(dsc->sc);
122 mtx_unlock(&dsc->sc->queue_mtx);
123 }
124
125 static int ipsd_probe(device_t dev)
126 {
127 DEVICE_PRINTF(2,dev, "in probe\n");
128 device_set_desc(dev, "Logical Drive");
129 return 0;
130 }
131
132 static int ipsd_attach(device_t dev)
133 {
134 device_t adapter;
135 ipsdisk_softc_t *dsc;
136 u_int totalsectors;
137
138 DEVICE_PRINTF(2,dev, "in attach\n");
139
140 dsc = (ipsdisk_softc_t *)device_get_softc(dev);
141 bzero(dsc, sizeof(ipsdisk_softc_t));
142 adapter = device_get_parent(dev);
143 dsc->dev = dev;
144 dsc->sc = device_get_softc(adapter);
145 dsc->unit = device_get_unit(dev);
146 dsc->disk_number = (uintptr_t) device_get_ivars(dev);
147 dsc->ipsd_disk = disk_alloc();
148 dsc->ipsd_disk->d_drv1 = dsc;
149 dsc->ipsd_disk->d_name = "ipsd";
150 dsc->ipsd_disk->d_maxsize = IPS_MAX_IO_SIZE;
151 dsc->ipsd_disk->d_open = ipsd_open;
152 dsc->ipsd_disk->d_close = ipsd_close;
153 dsc->ipsd_disk->d_strategy = ipsd_strategy;
154 dsc->ipsd_disk->d_dump = ipsd_dump;
155
156 totalsectors = dsc->sc->drives[dsc->disk_number].sector_count;
157 if ((totalsectors > 0x400000) &&
158 ((dsc->sc->adapter_info.miscflags & 0x8) == 0)) {
159 dsc->ipsd_disk->d_fwheads = IPS_NORM_HEADS;
160 dsc->ipsd_disk->d_fwsectors = IPS_NORM_SECTORS;
161 } else {
162 dsc->ipsd_disk->d_fwheads = IPS_COMP_HEADS;
163 dsc->ipsd_disk->d_fwsectors = IPS_COMP_SECTORS;
164 }
165 dsc->ipsd_disk->d_sectorsize = IPS_BLKSIZE;
166 dsc->ipsd_disk->d_mediasize = (off_t)totalsectors * IPS_BLKSIZE;
167 dsc->ipsd_disk->d_unit = dsc->unit;
168 dsc->ipsd_disk->d_flags = 0;
169 disk_create(dsc->ipsd_disk, DISK_VERSION);
170
171 device_printf(dev, "Logical Drive (%dMB)\n",
172 dsc->sc->drives[dsc->disk_number].sector_count >> 11);
173 return 0;
174 }
175
176 static int ipsd_detach(device_t dev)
177 {
178 ipsdisk_softc_t *dsc;
179
180 DEVICE_PRINTF(2, dev,"in detach\n");
181 dsc = (ipsdisk_softc_t *)device_get_softc(dev);
182 if(dsc->state & IPS_DEV_OPEN)
183 return (EBUSY);
184 disk_destroy(dsc->ipsd_disk);
185 return 0;
186 }
187
188 static int
189 ipsd_dump(void *arg, void *virtual, vm_offset_t physical, off_t offset,
190 size_t length)
191 {
192 ipsdisk_softc_t *dsc;
193 ips_softc_t *sc;
194 ips_command_t *command;
195 ips_io_cmd *command_struct;
196 struct disk *dp;
197 void *va;
198 off_t off;
199 size_t len;
200 int error = 0;
201
202 dp = arg;
203 dsc = dp->d_drv1;
204
205 if (dsc == NULL)
206 return (EINVAL);
207 sc = dsc->sc;
208
209 if (ips_get_free_cmd(sc, &command, 0) != 0) {
210 printf("ipsd: failed to get cmd for dump\n");
211 return (ENOMEM);
212 }
213
214 command->data_dmatag = sc->sg_dmatag;
215 command->callback = ipsd_dump_block_complete;
216
217 command_struct = (ips_io_cmd *)command->command_buffer;
218 command_struct->id = command->id;
219 command_struct->drivenum= sc->drives[dsc->disk_number].drivenum;
220
221 off = offset;
222 va = virtual;
223
224 while (length > 0) {
225 len =
226 (length > IPS_MAX_IO_SIZE) ? IPS_MAX_IO_SIZE : length;
227
228 command_struct->lba = off / IPS_BLKSIZE;
229
230 if (bus_dmamap_load(command->data_dmatag, command->data_dmamap,
231 va, len, ipsd_dump_map_sg, command, BUS_DMA_NOWAIT) != 0) {
232 error = EIO;
233 break;
234 }
235 if (COMMAND_ERROR(command)) {
236 error = EIO;
237 break;
238 }
239
240 length -= len;
241 off += len;
242 va = (uint8_t *)va + len;
243 }
244
245 ips_insert_free_cmd(command->sc, command);
246 return (error);
247 }
248
249 static void
250 ipsd_dump_map_sg(void *arg, bus_dma_segment_t *segs, int nsegs, int error)
251 {
252 ips_softc_t *sc;
253 ips_command_t *command;
254 ips_sg_element_t *sg_list;
255 ips_io_cmd *command_struct;
256 int i, length;
257
258 command = (ips_command_t *)arg;
259 sc = command->sc;
260 length = 0;
261
262 if (error) {
263 printf("ipsd_dump_map_sg: error %d\n", error);
264 ips_set_error(command, error);
265 return;
266 }
267
268 command_struct = (ips_io_cmd *)command->command_buffer;
269
270 if (nsegs != 1) {
271 command_struct->segnum = nsegs;
272 sg_list = (ips_sg_element_t *)((uint8_t *)
273 command->command_buffer + IPS_COMMAND_LEN);
274 for (i = 0; i < nsegs; i++) {
275 sg_list[i].addr = segs[i].ds_addr;
276 sg_list[i].len = segs[i].ds_len;
277 length += segs[i].ds_len;
278 }
279 command_struct->buffaddr =
280 (uint32_t)command->command_phys_addr + IPS_COMMAND_LEN;
281 command_struct->command = IPS_SG_WRITE_CMD;
282 } else {
283 command_struct->buffaddr = segs[0].ds_addr;
284 length = segs[0].ds_len;
285 command_struct->segnum = 0;
286 command_struct->command = IPS_WRITE_CMD;
287 }
288
289 length = (length + IPS_BLKSIZE - 1) / IPS_BLKSIZE;
290 command_struct->length = length;
291 bus_dmamap_sync(sc->command_dmatag, command->command_dmamap,
292 BUS_DMASYNC_PREWRITE);
293 bus_dmamap_sync(command->data_dmatag, command->data_dmamap,
294 BUS_DMASYNC_PREWRITE);
295
296 sc->ips_issue_cmd(command);
297 sc->ips_poll_cmd(command);
298 return;
299 }
300
301 static void
302 ipsd_dump_block_complete(ips_command_t *command)
303 {
304
305 if (COMMAND_ERROR(command))
306 printf("ipsd_dump completion error= 0x%x\n",
307 command->status.value);
308
309 bus_dmamap_sync(command->data_dmatag, command->data_dmamap,
310 BUS_DMASYNC_POSTWRITE);
311 bus_dmamap_unload(command->data_dmatag, command->data_dmamap);
312 }
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