2 * Copyright (c) 2000 Michael Smith
3 * Copyright (c) 2001 Scott Long
4 * Copyright (c) 2000 BSDi
5 * Copyright (c) 2001 Adaptec, Inc.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
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.
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
30 #include <sys/cdefs.h>
31 __FBSDID("$FreeBSD$");
35 #include <sys/param.h>
36 #include <sys/systm.h>
37 #include <sys/kernel.h>
38 #include <sys/module.h>
47 #include <machine/md_var.h>
48 #include <machine/bus.h>
51 #include <dev/aac/aacreg.h>
52 #include <sys/aac_ioctl.h>
53 #include <dev/aac/aacvar.h>
56 * Interface to parent.
58 static int aac_disk_probe(device_t dev);
59 static int aac_disk_attach(device_t dev);
60 static int aac_disk_detach(device_t dev);
63 * Interface to the device switch.
65 static disk_open_t aac_disk_open;
66 static disk_close_t aac_disk_close;
67 static disk_strategy_t aac_disk_strategy;
68 static dumper_t aac_disk_dump;
70 static devclass_t aac_disk_devclass;
72 static device_method_t aac_disk_methods[] = {
73 DEVMETHOD(device_probe, aac_disk_probe),
74 DEVMETHOD(device_attach, aac_disk_attach),
75 DEVMETHOD(device_detach, aac_disk_detach),
79 static driver_t aac_disk_driver = {
82 sizeof(struct aac_disk)
85 DRIVER_MODULE(aacd, aac, aac_disk_driver, aac_disk_devclass, NULL, NULL);
88 * Handle open from generic layer.
90 * This is called by the diskslice code on first open in order to get the
91 * basic device geometry paramters.
94 aac_disk_open(struct disk *dp)
98 fwprintf(NULL, HBA_FLAGS_DBG_FUNCTION_ENTRY_B, "");
100 sc = (struct aac_disk *)dp->d_drv1;
103 printf("aac_disk_open: No Softc\n");
107 /* check that the controller is up and running */
108 if (sc->ad_controller->aac_state & AAC_STATE_SUSPEND) {
109 device_printf(sc->ad_controller->aac_dev,
110 "Controller Suspended controller state = 0x%x\n",
111 sc->ad_controller->aac_state);
115 sc->ad_flags |= AAC_DISK_OPEN;
120 * Handle last close of the disk device.
123 aac_disk_close(struct disk *dp)
127 fwprintf(NULL, HBA_FLAGS_DBG_FUNCTION_ENTRY_B, "");
129 sc = (struct aac_disk *)dp->d_drv1;
134 sc->ad_flags &= ~AAC_DISK_OPEN;
139 * Handle an I/O request.
142 aac_disk_strategy(struct bio *bp)
146 sc = (struct aac_disk *)bp->bio_disk->d_drv1;
147 fwprintf(NULL, HBA_FLAGS_DBG_FUNCTION_ENTRY_B, "");
151 bp->bio_flags |= BIO_ERROR;
152 bp->bio_error = EINVAL;
157 /* do-nothing operation? */
158 if (bp->bio_bcount == 0) {
159 bp->bio_resid = bp->bio_bcount;
164 /* perform accounting */
166 /* pass the bio to the controller - it can work out who we are */
167 mtx_lock(&sc->ad_controller->aac_io_lock);
169 mtx_unlock(&sc->ad_controller->aac_io_lock);
173 * Map the S/G elements for doing a dump.
176 aac_dump_map_sg(void *arg, bus_dma_segment_t *segs, int nsegs, int error)
179 struct aac_blockwrite *bw;
180 struct aac_sg_table *sg;
183 fib = (struct aac_fib *)arg;
184 bw = (struct aac_blockwrite *)&fib->data[0];
189 for (i = 0; i < nsegs; i++) {
190 if (segs[i].ds_addr >= BUS_SPACE_MAXADDR_32BIT)
192 sg->SgEntry[i].SgAddress = segs[i].ds_addr;
193 sg->SgEntry[i].SgByteCount = segs[i].ds_len;
195 fib->Header.Size = nsegs * sizeof(struct aac_sg_entry);
200 * Map the S/G elements for doing a dump on 64-bit capable devices.
203 aac_dump_map_sg64(void *arg, bus_dma_segment_t *segs, int nsegs, int error)
206 struct aac_blockwrite64 *bw;
207 struct aac_sg_table64 *sg;
210 fib = (struct aac_fib *)arg;
211 bw = (struct aac_blockwrite64 *)&fib->data[0];
216 for (i = 0; i < nsegs; i++) {
217 sg->SgEntry64[i].SgAddress = segs[i].ds_addr;
218 sg->SgEntry64[i].SgByteCount = segs[i].ds_len;
220 fib->Header.Size = nsegs * sizeof(struct aac_sg_entry64);
225 * Dump memory out to an array
227 * Send out one command at a time with up to maxio of data.
230 aac_disk_dump(void *arg, void *virtual, vm_offset_t physical, off_t offset, size_t length)
233 struct aac_softc *sc;
237 static bus_dmamap_t dump_datamap;
238 static int first = 0;
240 bus_dmamap_callback_t *callback;
249 sc= ad->ad_controller;
253 if (bus_dmamap_create(sc->aac_buffer_dmat, 0, &dump_datamap)) {
254 device_printf(sc->aac_dev,
255 "bus_dmamap_create failed\n");
260 /* Skip aac_alloc_sync_fib(). We don't want to mess with sleep locks */
261 fib = &sc->aac_common->ac_sync_fib;
264 maxio = sc->aac_max_sectors << 9;
265 len = (length > maxio) ? maxio : length;
266 if ((sc->flags & AAC_FLAGS_SG_64BIT) == 0) {
267 struct aac_blockwrite *bw;
268 bw = (struct aac_blockwrite *)&fib->data[0];
269 bw->Command = VM_CtBlockWrite;
270 bw->ContainerId = ad->ad_container->co_mntobj.ObjectId;
271 bw->BlockNumber = offset / AAC_BLOCK_SIZE;
273 bw->Stable = CUNSTABLE;
274 command = ContainerCommand;
275 callback = aac_dump_map_sg;
276 size = sizeof(struct aac_blockwrite);
278 struct aac_blockwrite64 *bw;
279 bw = (struct aac_blockwrite64 *)&fib->data[0];
280 bw->Command = VM_CtHostWrite64;
281 bw->ContainerId = ad->ad_container->co_mntobj.ObjectId;
282 bw->BlockNumber = offset / AAC_BLOCK_SIZE;
283 bw->SectorCount = len / AAC_BLOCK_SIZE;
286 command = ContainerCommand64;
287 callback = aac_dump_map_sg64;
288 size = sizeof(struct aac_blockwrite64);
292 * There really isn't any way to recover from errors or
293 * resource shortages here. Oh well. Because of that, don't
294 * bother trying to send the command from the callback; there
295 * is too much required context.
297 if (bus_dmamap_load(sc->aac_buffer_dmat, dump_datamap, virtual,
298 len, callback, fib, BUS_DMA_NOWAIT) != 0)
301 bus_dmamap_sync(sc->aac_buffer_dmat, dump_datamap,
302 BUS_DMASYNC_PREWRITE);
304 /* fib->Header.Size is set in aac_dump_map_sg */
305 size += fib->Header.Size;
307 if (aac_sync_fib(sc, command, 0, fib, size)) {
308 device_printf(sc->aac_dev,
309 "Error dumping block 0x%jx\n",
310 (uintmax_t)physical);
314 bus_dmamap_sync(sc->aac_buffer_dmat, dump_datamap,
315 BUS_DMASYNC_POSTWRITE);
317 bus_dmamap_unload(sc->aac_buffer_dmat, dump_datamap);
321 virtual = (uint8_t *)virtual + len;
328 * Handle completion of an I/O request.
331 aac_biodone(struct bio *bp)
333 fwprintf(NULL, HBA_FLAGS_DBG_FUNCTION_ENTRY_B, "");
335 if (bp->bio_flags & BIO_ERROR) {
336 bp->bio_resid = bp->bio_bcount;
337 disk_err(bp, "hard error", -1, 1);
347 aac_disk_probe(device_t dev)
350 fwprintf(NULL, HBA_FLAGS_DBG_FUNCTION_ENTRY_B, "");
356 * Attach a unit to the controller.
359 aac_disk_attach(device_t dev)
363 sc = (struct aac_disk *)device_get_softc(dev);
364 fwprintf(NULL, HBA_FLAGS_DBG_FUNCTION_ENTRY_B, "");
366 /* initialise our softc */
368 (struct aac_softc *)device_get_softc(device_get_parent(dev));
369 sc->ad_container = device_get_ivars(dev);
373 * require that extended translation be enabled - other drivers read the
376 sc->ad_size = sc->ad_container->co_mntobj.Capacity;
377 if (sc->ad_controller->flags & AAC_FLAGS_LBA_64BIT)
378 sc->ad_size += (u_int64_t)
379 sc->ad_container->co_mntobj.CapacityHigh << 32;
380 if (sc->ad_size >= (2 * 1024 * 1024)) { /* 2GB */
383 } else if (sc->ad_size >= (1 * 1024 * 1024)) { /* 1GB */
390 sc->ad_cylinders = (sc->ad_size / (sc->ad_heads * sc->ad_sectors));
392 device_printf(dev, "%juMB (%ju sectors)\n",
393 (intmax_t)sc->ad_size / ((1024 * 1024) / AAC_BLOCK_SIZE),
394 (intmax_t)sc->ad_size);
396 /* attach a generic disk device to ourselves */
397 sc->unit = device_get_unit(dev);
398 sc->ad_disk = disk_alloc();
399 sc->ad_disk->d_drv1 = sc;
400 sc->ad_disk->d_flags = DISKFLAG_UNMAPPED_BIO;
401 sc->ad_disk->d_name = "aacd";
402 sc->ad_disk->d_maxsize = sc->ad_controller->aac_max_sectors << 9;
403 sc->ad_disk->d_open = aac_disk_open;
404 sc->ad_disk->d_close = aac_disk_close;
405 sc->ad_disk->d_strategy = aac_disk_strategy;
406 sc->ad_disk->d_dump = aac_disk_dump;
407 sc->ad_disk->d_sectorsize = AAC_BLOCK_SIZE;
408 sc->ad_disk->d_mediasize = (off_t)sc->ad_size * AAC_BLOCK_SIZE;
409 sc->ad_disk->d_fwsectors = sc->ad_sectors;
410 sc->ad_disk->d_fwheads = sc->ad_heads;
411 sc->ad_disk->d_unit = sc->unit;
412 disk_create(sc->ad_disk, DISK_VERSION);
418 * Disconnect ourselves from the system.
421 aac_disk_detach(device_t dev)
425 sc = (struct aac_disk *)device_get_softc(dev);
426 fwprintf(NULL, HBA_FLAGS_DBG_FUNCTION_ENTRY_B, "");
428 if (sc->ad_flags & AAC_DISK_OPEN)
431 disk_destroy(sc->ad_disk);