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: releng/12.0/sys/dev/ips/ips_disk.c 326255 2017-11-27 14:52:40Z pfg $");
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 mtx_lock(&dsc->sc->queue_mtx);
113 bioq_insert_tail(&dsc->sc->queue, iobuf);
114 ips_start_io_request(dsc->sc);
115 mtx_unlock(&dsc->sc->queue_mtx);
116 }
117
118 static int ipsd_probe(device_t dev)
119 {
120 DEVICE_PRINTF(2,dev, "in probe\n");
121 device_set_desc(dev, "Logical Drive");
122 return 0;
123 }
124
125 static int ipsd_attach(device_t dev)
126 {
127 device_t adapter;
128 ipsdisk_softc_t *dsc;
129 u_int totalsectors;
130
131 DEVICE_PRINTF(2,dev, "in attach\n");
132
133 dsc = (ipsdisk_softc_t *)device_get_softc(dev);
134 bzero(dsc, sizeof(ipsdisk_softc_t));
135 adapter = device_get_parent(dev);
136 dsc->dev = dev;
137 dsc->sc = device_get_softc(adapter);
138 dsc->unit = device_get_unit(dev);
139 dsc->disk_number = (uintptr_t) device_get_ivars(dev);
140 dsc->ipsd_disk = disk_alloc();
141 dsc->ipsd_disk->d_drv1 = dsc;
142 dsc->ipsd_disk->d_name = "ipsd";
143 dsc->ipsd_disk->d_maxsize = IPS_MAX_IO_SIZE;
144 dsc->ipsd_disk->d_open = ipsd_open;
145 dsc->ipsd_disk->d_close = ipsd_close;
146 dsc->ipsd_disk->d_strategy = ipsd_strategy;
147 dsc->ipsd_disk->d_dump = ipsd_dump;
148
149 totalsectors = dsc->sc->drives[dsc->disk_number].sector_count;
150 if ((totalsectors > 0x400000) &&
151 ((dsc->sc->adapter_info.miscflags & 0x8) == 0)) {
152 dsc->ipsd_disk->d_fwheads = IPS_NORM_HEADS;
153 dsc->ipsd_disk->d_fwsectors = IPS_NORM_SECTORS;
154 } else {
155 dsc->ipsd_disk->d_fwheads = IPS_COMP_HEADS;
156 dsc->ipsd_disk->d_fwsectors = IPS_COMP_SECTORS;
157 }
158 dsc->ipsd_disk->d_sectorsize = IPS_BLKSIZE;
159 dsc->ipsd_disk->d_mediasize = (off_t)totalsectors * IPS_BLKSIZE;
160 dsc->ipsd_disk->d_unit = dsc->unit;
161 dsc->ipsd_disk->d_flags = 0;
162 disk_create(dsc->ipsd_disk, DISK_VERSION);
163
164 device_printf(dev, "Logical Drive (%dMB)\n",
165 dsc->sc->drives[dsc->disk_number].sector_count >> 11);
166 return 0;
167 }
168
169 static int ipsd_detach(device_t dev)
170 {
171 ipsdisk_softc_t *dsc;
172
173 DEVICE_PRINTF(2, dev,"in detach\n");
174 dsc = (ipsdisk_softc_t *)device_get_softc(dev);
175 if(dsc->state & IPS_DEV_OPEN)
176 return (EBUSY);
177 disk_destroy(dsc->ipsd_disk);
178 return 0;
179 }
180
181 static int
182 ipsd_dump(void *arg, void *virtual, vm_offset_t physical, off_t offset,
183 size_t length)
184 {
185 ipsdisk_softc_t *dsc;
186 ips_softc_t *sc;
187 ips_command_t *command;
188 ips_io_cmd *command_struct;
189 struct disk *dp;
190 void *va;
191 off_t off;
192 size_t len;
193 int error = 0;
194
195 dp = arg;
196 dsc = dp->d_drv1;
197
198 if (dsc == NULL)
199 return (EINVAL);
200 sc = dsc->sc;
201
202 if (ips_get_free_cmd(sc, &command, 0) != 0) {
203 printf("ipsd: failed to get cmd for dump\n");
204 return (ENOMEM);
205 }
206
207 command->data_dmatag = sc->sg_dmatag;
208 command->callback = ipsd_dump_block_complete;
209
210 command_struct = (ips_io_cmd *)command->command_buffer;
211 command_struct->id = command->id;
212 command_struct->drivenum= sc->drives[dsc->disk_number].drivenum;
213
214 off = offset;
215 va = virtual;
216
217 while (length > 0) {
218 len =
219 (length > IPS_MAX_IO_SIZE) ? IPS_MAX_IO_SIZE : length;
220
221 command_struct->lba = off / IPS_BLKSIZE;
222
223 if (bus_dmamap_load(command->data_dmatag, command->data_dmamap,
224 va, len, ipsd_dump_map_sg, command, BUS_DMA_NOWAIT) != 0) {
225 error = EIO;
226 break;
227 }
228 if (COMMAND_ERROR(command)) {
229 error = EIO;
230 break;
231 }
232
233 length -= len;
234 off += len;
235 va = (uint8_t *)va + len;
236 }
237
238 ips_insert_free_cmd(command->sc, command);
239 return (error);
240 }
241
242 static void
243 ipsd_dump_map_sg(void *arg, bus_dma_segment_t *segs, int nsegs, int error)
244 {
245 ips_softc_t *sc;
246 ips_command_t *command;
247 ips_sg_element_t *sg_list;
248 ips_io_cmd *command_struct;
249 int i, length;
250
251 command = (ips_command_t *)arg;
252 sc = command->sc;
253 length = 0;
254
255 if (error) {
256 printf("ipsd_dump_map_sg: error %d\n", error);
257 ips_set_error(command, error);
258 return;
259 }
260
261 command_struct = (ips_io_cmd *)command->command_buffer;
262
263 if (nsegs != 1) {
264 command_struct->segnum = nsegs;
265 sg_list = (ips_sg_element_t *)((uint8_t *)
266 command->command_buffer + IPS_COMMAND_LEN);
267 for (i = 0; i < nsegs; i++) {
268 sg_list[i].addr = segs[i].ds_addr;
269 sg_list[i].len = segs[i].ds_len;
270 length += segs[i].ds_len;
271 }
272 command_struct->buffaddr =
273 (uint32_t)command->command_phys_addr + IPS_COMMAND_LEN;
274 command_struct->command = IPS_SG_WRITE_CMD;
275 } else {
276 command_struct->buffaddr = segs[0].ds_addr;
277 length = segs[0].ds_len;
278 command_struct->segnum = 0;
279 command_struct->command = IPS_WRITE_CMD;
280 }
281
282 length = (length + IPS_BLKSIZE - 1) / IPS_BLKSIZE;
283 command_struct->length = length;
284 bus_dmamap_sync(sc->command_dmatag, command->command_dmamap,
285 BUS_DMASYNC_PREWRITE);
286 bus_dmamap_sync(command->data_dmatag, command->data_dmamap,
287 BUS_DMASYNC_PREWRITE);
288
289 sc->ips_issue_cmd(command);
290 sc->ips_poll_cmd(command);
291 return;
292 }
293
294 static void
295 ipsd_dump_block_complete(ips_command_t *command)
296 {
297
298 if (COMMAND_ERROR(command))
299 printf("ipsd_dump completion error= 0x%x\n",
300 command->status.value);
301
302 bus_dmamap_sync(command->data_dmatag, command->data_dmamap,
303 BUS_DMASYNC_POSTWRITE);
304 bus_dmamap_unload(command->data_dmatag, command->data_dmamap);
305 }
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