Change the kernel dev_t, representing a pointer to a specinfo structure,
[dragonfly.git] / sys / dev / raid / ips / ips_disk.c
CommitLineData
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1/*-
2 * Written by: David Jeffery
3 * Copyright (c) 2002 Adaptec Inc.
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
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 AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 *
ad57418e 27 * $FreeBSD: src/sys/dev/ips/ips_disk.c,v 1.4 2003/09/22 04:59:07 njl Exp $
b13267a5 28 * $DragonFly: src/sys/dev/raid/ips/ips_disk.c,v 1.10 2006/09/10 01:26:35 dillon Exp $
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29 */
30
287d1e34 31#include <sys/devicestat.h>
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32#include <dev/raid/ips/ips.h>
33#include <dev/raid/ips/ips_disk.h>
34#include <sys/stat.h>
35
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36#include <vm/vm.h>
37#include <vm/pmap.h>
38#include <machine/md_var.h>
39
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40static int ipsd_probe(device_t dev);
41static int ipsd_attach(device_t dev);
42static int ipsd_detach(device_t dev);
43
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44#if 0
45static int ipsd_dump(void *arg, void *virtual, vm_offset_t physical, off_t offset, size_t length);
46static void ipsd_dump_map_sg(void *arg, bus_dma_segment_t *segs, int nsegs,
47 int error);
48static void ipsd_dump_block_complete(ips_command_t *command);
49#endif
50
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51static d_open_t ipsd_open;
52static d_close_t ipsd_close;
53static d_strategy_t ipsd_strategy;
54static d_dump_t ipsd_dump_helper;
55
56static struct dev_ops ipsd_ops = {
57 { "ipsd", IPSD_CDEV_MAJOR, D_DISK },
58 .d_open = ipsd_open,
59 .d_close = ipsd_close,
60 .d_strategy = ipsd_strategy,
61 .d_read = physread,
62 .d_write = physwrite,
63 .d_dump = ipsd_dump_helper,
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64};
65
66static device_method_t ipsd_methods[] = {
67 DEVMETHOD(device_probe, ipsd_probe),
68 DEVMETHOD(device_attach, ipsd_attach),
69 DEVMETHOD(device_detach, ipsd_detach),
70 { 0, 0 }
71};
72
73
74static driver_t ipsd_driver = {
75 "ipsd",
76 ipsd_methods,
77 sizeof(ipsdisk_softc_t)
78};
79
80static devclass_t ipsd_devclass;
81DRIVER_MODULE(ipsd, ips, ipsd_driver, ipsd_devclass, 0, 0);
82
83/*
84 * handle opening of disk device. It must set up all information about
85 * the geometry and size of the disk
86 */
87static int
fef8985e 88ipsd_open(struct dev_open_args *ap)
edc6143b 89{
b13267a5 90 cdev_t dev = ap->a_head.a_dev;
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91 ipsdisk_softc_t *dsc = dev->si_drv1;
92
93 if (dsc == NULL)
94 return (ENXIO);
95 dsc->state |= IPS_DEV_OPEN;
96 DEVICE_PRINTF(2, dsc->dev, "I'm open\n");
97 return 0;
98}
99
100static int
fef8985e 101ipsd_close(struct dev_close_args *ap)
edc6143b 102{
b13267a5 103 cdev_t dev = ap->a_head.a_dev;
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104 ipsdisk_softc_t *dsc = dev->si_drv1;
105
106 dsc->state &= ~IPS_DEV_OPEN;
107 DEVICE_PRINTF(2, dsc->dev, "I'm closed for the day\n");
108 return 0;
109}
110
111/* ipsd_finish is called to clean up and return a completed IO request */
112void
81b5c339 113ipsd_finish(struct bio *bio)
edc6143b 114{
81b5c339 115 struct buf *bp = bio->bio_buf;
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116 ipsdisk_softc_t *dsc;
117
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118 dsc = bio->bio_driver_info;
119 if (bp->b_flags & B_ERROR) {
120 device_printf(dsc->dev, "iobuf error %d\n", bp->b_error);
121 } else {
122 bp->b_resid = 0;
123 }
124 devstat_end_transaction_buf(&dsc->stats, bp);
125 biodone(bio);
4751a114 126 ips_start_io_request(dsc->sc);
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127}
128
129
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130static int
131ipsd_strategy(struct dev_strategy_args *ap)
edc6143b 132{
b13267a5 133 cdev_t dev = ap->a_head.a_dev;
fef8985e 134 struct bio *bio = ap->a_bio;
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135 ipsdisk_softc_t *dsc;
136
81b5c339 137 dsc = dev->si_drv1;
edc6143b 138 DEVICE_PRINTF(8, dsc->dev, "in strategy\n");
81b5c339 139 bio->bio_driver_info = dsc;
287d1e34 140 devstat_start_transaction(&dsc->stats);
7cd8d145 141 lockmgr(&dsc->sc->queue_lock, LK_EXCLUSIVE|LK_RETRY);
81b5c339 142 bioq_insert_tail(&dsc->sc->bio_queue, bio);
4751a114 143 ips_start_io_request(dsc->sc);
7cd8d145 144 lockmgr(&dsc->sc->queue_lock, LK_RELEASE);
fef8985e 145 return(0);
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146}
147
148static int
149ipsd_probe(device_t dev)
150{
151 DEVICE_PRINTF(2, dev, "in probe\n");
152 device_set_desc(dev, "Logical Drive");
153 return 0;
154}
155
156static int
157ipsd_attach(device_t dev)
158{
159 device_t adapter;
160 ipsdisk_softc_t *dsc;
161 struct disklabel *label;
162 u_int totalsectors;
163 u_int nheads, nsectors;
164
165 DEVICE_PRINTF(2, dev, "in attach\n");
166 dsc = (ipsdisk_softc_t *)device_get_softc(dev);
167 bzero(dsc, sizeof(ipsdisk_softc_t));
168 adapter = device_get_parent(dev);
169 dsc->dev = dev;
170 dsc->sc = device_get_softc(adapter);
171 dsc->unit = device_get_unit(dev);
172 dsc->disk_number = (uintptr_t) device_get_ivars(dev);
173 totalsectors = dsc->sc->drives[dsc->disk_number].sector_count;
174 if ((totalsectors > 0x400000) &&
175 ((dsc->sc->adapter_info.miscflags & 0x8) == 0)) {
176 nheads = IPS_NORM_HEADS;
177 nsectors = IPS_NORM_SECTORS;
178 } else {
179 nheads = IPS_COMP_HEADS;
180 nsectors = IPS_COMP_SECTORS;
181 }
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182 devstat_add_entry(&dsc->stats, "ipsd", dsc->unit, DEV_BSIZE,
183 DEVSTAT_NO_ORDERED_TAGS,
184 DEVSTAT_TYPE_DIRECT | DEVSTAT_TYPE_IF_SCSI,
185 DEVSTAT_PRIORITY_DISK);
fef8985e 186 dsc->ipsd_dev_t = disk_create(dsc->unit, &dsc->ipsd_disk, 0, &ipsd_ops);
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187 dsc->ipsd_dev_t->si_drv1 = dsc;
188 dsc->ipsd_dev_t->si_iosize_max = IPS_MAX_IO_SIZE;
189 label = &dsc->ipsd_disk.d_label;
190 bzero(label, sizeof(*label));
191 label->d_ntracks = nheads;
192 label->d_nsectors = nsectors;
193 label->d_type = DTYPE_ESDI;
194 label->d_secsize = IPS_BLKSIZE;
195 label->d_ncylinders = totalsectors / nheads / nsectors;
196 label->d_secpercyl = nsectors / nheads;
197 label->d_secperunit = totalsectors;
198 device_printf(dev, "Logical Drive (%dMB)\n",
199 dsc->sc->drives[dsc->disk_number].sector_count >> 11);
200 return 0;
201}
202
203static int
204ipsd_detach(device_t dev)
205{
206 ipsdisk_softc_t *dsc;
207
208 DEVICE_PRINTF(2, dev, "in detach\n");
209 dsc = (ipsdisk_softc_t *)device_get_softc(dev);
210 if (dsc->state & IPS_DEV_OPEN)
211 return (EBUSY);
287d1e34 212 devstat_remove_entry(&dsc->stats);
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213 disk_destroy(&dsc->ipsd_disk);
214 return 0;
215}
216
4751a114 217static int
fef8985e 218ipsd_dump_helper(struct dev_dump_args *ap)
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219{
220 printf("dump support for IPS not yet working, will not dump\n");
221 return (ENODEV);
222
223#if 0
224 long blkcnt;
225 caddr_t va;
226 vm_offset_t addr, a;
227 int dumppages = MAXDUMPPGS;
228 int i;
229
230 addr = 0;
231 blkcnt = howmany(PAGE_SIZE, secsize);
232 while (count > 0) {
233 va = NULL;
234 if (count / blkcnt < dumppages)
235 dumppages = count / blkcnt;
236 for (i = 0; i < dumppages; i++) {
237 a = addr + (i * PAGE_SIZE);
238 if (!is_physical_memory(a))
239 a = 0;
240 va = pmap_kenter_temporary(trunc_page(a), i);
241 }
242
243 ipsd_dump(dev, va, 0, blkno, PAGE_SIZE * dumppages);
244 if (dumpstatus(addr, (off_t)count * DEV_BSIZE) < 0)
245 return (EINTR);
246 blkno += blkcnt * dumppages;
247 count -= blkcnt * dumppages;
248 addr += PAGE_SIZE * dumppages;
249 }
250 return (0);
251#endif
252}
253
254#if 0
255
256static int
257ipsd_dump(void *arg, void *virtual, vm_offset_t physical, off_t offset,
258 size_t length)
259{
b13267a5 260 cdev_t dev = arg;
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261 ips_softc_t *sc;
262 ips_command_t *command;
263 ips_io_cmd *command_struct;
264 ipsdisk_softc_t *dsc;
265 off_t off;
266 uint8_t *va;
267 int len;
268 int error = 0;
269
270 dsc = dev->si_drv1;
271 if (dsc == NULL)
272 return (EINVAL);
273 sc = dsc->sc;
274
275 if (ips_get_free_cmd(sc, &command, 0) != 0) {
276 printf("ipsd: failed to get cmd for dump\n");
277 return (ENOMEM);
278 }
279
280 command->data_dmatag = sc->sg_dmatag;
281 command->callback = ipsd_dump_block_complete;
282
283 command_struct = (ips_io_cmd *)command->command_buffer;
284 command_struct->id = command->id;
285 command_struct->drivenum = sc->drives[dsc->disk_number].drivenum;
286
287 off = offset;
288 va = virtual;
289
290 while (length > 0) {
291 len = length > IPS_MAX_IO_SIZE ? IPS_MAX_IO_SIZE : length;
292 command_struct->lba = off / IPS_BLKSIZE;
293 if (bus_dmamap_load(command->data_dmatag, command->data_dmamap,
294 va, len, ipsd_dump_map_sg, command, 0) != 0) {
295 error = EIO;
296 break;
297 }
298 if (COMMAND_ERROR(&command->status)) {
299 error = EIO;
300 break;
301 }
302
303 length -= len;
304 off += len;
305 va += len;
306 }
307 ips_insert_free_cmd(command->sc, command);
308 return(error);
309}
310
311static void
312ipsd_dump_map_sg(void *arg, bus_dma_segment_t *segs, int nsegs, int error)
313{
314 ips_softc_t *sc;
315 ips_command_t *command;
316 ips_sg_element_t *sg_list;
317 ips_io_cmd *command_struct;
318 int i, length;
319
320 command = (ips_command_t *)arg;
321 sc = command->sc;
322 length = 0;
323
324 if (error) {
325 printf("ipsd_dump_map_sg: error %d\n", error);
326 command->status.value = IPS_ERROR_STATUS;
327 return;
328 }
329
330 command_struct = (ips_io_cmd *)command->command_buffer;
331
332 if (nsegs != 1) {
333 command_struct->segnum = nsegs;
334 sg_list = (ips_sg_element_t *)((uint8_t *)
335 command->command_buffer + IPS_COMMAND_LEN);
336 for (i = 0; i < nsegs; i++) {
337 sg_list[i].addr = segs[i].ds_addr;
338 sg_list[i].len = segs[i].ds_len;
339 length += segs[i].ds_len;
340 }
341 command_struct->buffaddr =
342 (uint32_t)command->command_phys_addr + IPS_COMMAND_LEN;
343 command_struct->command = IPS_SG_WRITE_CMD;
344 } else {
345 command_struct->buffaddr = segs[0].ds_addr;
346 length = segs[0].ds_len;
347 command_struct->segnum = 0;
348 command_struct->command = IPS_WRITE_CMD;
349 }
350
351 length = (length + IPS_BLKSIZE - 1) / IPS_BLKSIZE;
352 command_struct->length = length;
353 bus_dmamap_sync(sc->command_dmatag, command->command_dmamap,
354 BUS_DMASYNC_PREWRITE);
355 bus_dmamap_sync(command->data_dmatag, command->data_dmamap,
356 BUS_DMASYNC_PREWRITE);
357
358 sc->ips_issue_cmd(command);
359 sc->ips_poll_cmd(command);
360 return;
361}
362
363static void
364ipsd_dump_block_complete(ips_command_t *command)
365{
366 if (COMMAND_ERROR(&command->status)) {
367 printf("ipsd_dump completion error= 0x%x\n",
368 command->status.value);
369 }
370 bus_dmamap_sync(command->data_dmatag, command->data_dmamap,
371 BUS_DMASYNC_POSTWRITE);
372 bus_dmamap_unload(command->data_dmatag, command->data_dmamap);
373}
374
375#endif