2 * Written by: David Jeffery
3 * Copyright (c) 2002 Adaptec Inc.
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
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.
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
27 * $FreeBSD: src/sys/dev/ips/ips_disk.c,v 1.4 2003/09/22 04:59:07 njl Exp $
30 #include <sys/devicestat.h>
31 #include <dev/raid/ips/ips.h>
32 #include <dev/raid/ips/ips_disk.h>
34 #include <sys/dtype.h>
38 #include <machine/md_var.h>
40 static int ipsd_probe(device_t dev);
41 static int ipsd_attach(device_t dev);
42 static int ipsd_detach(device_t dev);
44 static void ipsd_dump_map_sg(void *arg, bus_dma_segment_t *segs, int nsegs,
46 static void ipsd_dump_block_complete(ips_command_t *command);
48 static d_open_t ipsd_open;
49 static d_close_t ipsd_close;
50 static d_strategy_t ipsd_strategy;
51 static d_dump_t ipsd_dump;
53 static struct dev_ops ipsd_ops = {
54 { "ipsd", 0, D_DISK },
56 .d_close = ipsd_close,
57 .d_strategy = ipsd_strategy,
63 static device_method_t ipsd_methods[] = {
64 DEVMETHOD(device_probe, ipsd_probe),
65 DEVMETHOD(device_attach, ipsd_attach),
66 DEVMETHOD(device_detach, ipsd_detach),
71 static driver_t ipsd_driver = {
74 sizeof(ipsdisk_softc_t)
77 static devclass_t ipsd_devclass;
78 DRIVER_MODULE(ipsd, ips, ipsd_driver, ipsd_devclass, NULL, NULL);
81 * handle opening of disk device. It must set up all information about
82 * the geometry and size of the disk
85 ipsd_open(struct dev_open_args *ap)
87 cdev_t dev = ap->a_head.a_dev;
88 ipsdisk_softc_t *dsc = dev->si_drv1;
92 dsc->state |= IPS_DEV_OPEN;
93 DEVICE_PRINTF(2, dsc->dev, "I'm open\n");
98 ipsd_close(struct dev_close_args *ap)
100 cdev_t dev = ap->a_head.a_dev;
101 ipsdisk_softc_t *dsc = dev->si_drv1;
103 dsc->state &= ~IPS_DEV_OPEN;
104 DEVICE_PRINTF(2, dsc->dev, "I'm closed for the day\n");
108 /* ipsd_finish is called to clean up and return a completed IO request */
110 ipsd_finish(struct bio *bio)
112 struct buf *bp = bio->bio_buf;
113 ipsdisk_softc_t *dsc;
115 dsc = bio->bio_driver_info;
116 if (bp->b_flags & B_ERROR) {
117 device_printf(dsc->dev, "iobuf error %d\n", bp->b_error);
121 devstat_end_transaction_buf(&dsc->stats, bp);
123 ips_start_io_request(dsc->sc);
128 ipsd_strategy(struct dev_strategy_args *ap)
130 cdev_t dev = ap->a_head.a_dev;
131 struct bio *bio = ap->a_bio;
132 ipsdisk_softc_t *dsc;
135 DEVICE_PRINTF(8, dsc->dev, "in strategy\n");
136 bio->bio_driver_info = dsc;
137 devstat_start_transaction(&dsc->stats);
138 lockmgr(&dsc->sc->queue_lock, LK_EXCLUSIVE|LK_RETRY);
139 bioqdisksort(&dsc->sc->bio_queue, bio);
140 ips_start_io_request(dsc->sc);
141 lockmgr(&dsc->sc->queue_lock, LK_RELEASE);
146 ipsd_probe(device_t dev)
148 DEVICE_PRINTF(2, dev, "in probe\n");
149 device_set_desc(dev, "Logical Drive");
154 ipsd_attach(device_t dev)
157 ipsdisk_softc_t *dsc;
158 struct disk_info info;
160 u_int nheads, nsectors;
162 DEVICE_PRINTF(2, dev, "in attach\n");
163 dsc = (ipsdisk_softc_t *)device_get_softc(dev);
164 bzero(dsc, sizeof(ipsdisk_softc_t));
165 adapter = device_get_parent(dev);
167 dsc->sc = device_get_softc(adapter);
168 dsc->unit = device_get_unit(dev);
169 dsc->disk_number = (uintptr_t) device_get_ivars(dev);
170 totalsectors = dsc->sc->drives[dsc->disk_number].sector_count;
171 if ((totalsectors > 0x400000) &&
172 ((dsc->sc->adapter_info.miscflags & 0x8) == 0)) {
173 nheads = IPS_NORM_HEADS;
174 nsectors = IPS_NORM_SECTORS;
176 nheads = IPS_COMP_HEADS;
177 nsectors = IPS_COMP_SECTORS;
179 devstat_add_entry(&dsc->stats, "ipsd", dsc->unit, DEV_BSIZE,
180 DEVSTAT_NO_ORDERED_TAGS,
181 DEVSTAT_TYPE_DIRECT | DEVSTAT_TYPE_IF_SCSI,
182 DEVSTAT_PRIORITY_DISK);
183 dsc->ipsd_dev_t = disk_create(dsc->unit, &dsc->ipsd_disk, &ipsd_ops);
184 dsc->ipsd_dev_t->si_drv1 = dsc;
185 dsc->ipsd_dev_t->si_iosize_max = IPS_MAX_IO_SIZE;
187 bzero(&info, sizeof(info));
188 info.d_media_blksize = IPS_BLKSIZE; /* mandatory */
189 info.d_media_blocks = totalsectors;
191 info.d_type = DTYPE_ESDI; /* optional */
192 info.d_nheads = nheads;
193 info.d_secpertrack = nsectors;
194 info.d_ncylinders = totalsectors / nheads / nsectors;
195 info.d_secpercyl = nsectors / nheads;
197 disk_setdiskinfo(&dsc->ipsd_disk, &info);
199 device_printf(dev, "Logical Drive (%dMB)\n",
200 dsc->sc->drives[dsc->disk_number].sector_count >> 11);
205 ipsd_detach(device_t dev)
207 ipsdisk_softc_t *dsc;
209 DEVICE_PRINTF(2, dev, "in detach\n");
210 dsc = (ipsdisk_softc_t *)device_get_softc(dev);
211 if (dsc->state & IPS_DEV_OPEN)
213 devstat_remove_entry(&dsc->stats);
214 disk_destroy(&dsc->ipsd_disk);
220 ipsd_dump(struct dev_dump_args *ap)
222 cdev_t dev = ap->a_head.a_dev;
224 ips_command_t *command;
225 ips_io_cmd *command_struct;
226 ipsdisk_softc_t *dsc;
237 if (ips_get_free_cmd(sc, &command, 0) != 0) {
238 kprintf("ipsd: failed to get cmd for dump\n");
242 command->data_dmatag = sc->sg_dmatag;
243 command->callback = ipsd_dump_block_complete;
245 command_struct = (ips_io_cmd *)command->command_buffer;
246 command_struct->id = command->id;
247 command_struct->drivenum = sc->drives[dsc->disk_number].drivenum;
252 size_t length = ap->a_length;
254 len = length > IPS_MAX_IO_SIZE ? IPS_MAX_IO_SIZE : length;
255 command_struct->lba = off / IPS_BLKSIZE;
256 if (bus_dmamap_load(command->data_dmatag, command->data_dmamap,
257 va, len, ipsd_dump_map_sg, command, 0) != 0) {
261 if (COMMAND_ERROR(&command->status)) {
270 ips_insert_free_cmd(command->sc, command);
275 ipsd_dump_map_sg(void *arg, bus_dma_segment_t *segs, int nsegs, int error)
278 ips_command_t *command;
279 ips_sg_element_t *sg_list;
280 ips_io_cmd *command_struct;
283 command = (ips_command_t *)arg;
288 kprintf("ipsd_dump_map_sg: error %d\n", error);
289 command->status.value = IPS_ERROR_STATUS;
293 command_struct = (ips_io_cmd *)command->command_buffer;
296 command_struct->segnum = nsegs;
297 sg_list = (ips_sg_element_t *)((uint8_t *)
298 command->command_buffer + IPS_COMMAND_LEN);
299 for (i = 0; i < nsegs; i++) {
300 sg_list[i].addr = segs[i].ds_addr;
301 sg_list[i].len = segs[i].ds_len;
302 length += segs[i].ds_len;
304 command_struct->buffaddr =
305 (uint32_t)command->command_phys_addr + IPS_COMMAND_LEN;
306 command_struct->command = IPS_SG_WRITE_CMD;
308 command_struct->buffaddr = segs[0].ds_addr;
309 length = segs[0].ds_len;
310 command_struct->segnum = 0;
311 command_struct->command = IPS_WRITE_CMD;
314 length = (length + IPS_BLKSIZE - 1) / IPS_BLKSIZE;
315 command_struct->length = length;
316 bus_dmamap_sync(sc->command_dmatag, command->command_dmamap,
317 BUS_DMASYNC_PREWRITE);
318 bus_dmamap_sync(command->data_dmatag, command->data_dmamap,
319 BUS_DMASYNC_PREWRITE);
321 sc->ips_issue_cmd(command);
322 sc->ips_poll_cmd(command);
327 ipsd_dump_block_complete(ips_command_t *command)
329 if (COMMAND_ERROR(&command->status)) {
330 kprintf("ipsd_dump completion error= 0x%x\n",
331 command->status.value);
333 bus_dmamap_sync(command->data_dmatag, command->data_dmamap,
334 BUS_DMASYNC_POSTWRITE);
335 bus_dmamap_unload(command->data_dmatag, command->data_dmamap);