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>
39 #include <sys/sysctl.h>
48 #include <machine/md_var.h>
49 #include <machine/bus.h>
52 #include <dev/aac/aacreg.h>
53 #include <sys/aac_ioctl.h>
54 #include <dev/aac/aacvar.h>
57 * Interface to parent.
59 static int aac_disk_probe(device_t dev);
60 static int aac_disk_attach(device_t dev);
61 static int aac_disk_detach(device_t dev);
64 * Interface to the device switch.
66 static disk_open_t aac_disk_open;
67 static disk_close_t aac_disk_close;
68 static disk_strategy_t aac_disk_strategy;
69 static dumper_t aac_disk_dump;
71 static devclass_t aac_disk_devclass;
73 static device_method_t aac_disk_methods[] = {
74 DEVMETHOD(device_probe, aac_disk_probe),
75 DEVMETHOD(device_attach, aac_disk_attach),
76 DEVMETHOD(device_detach, aac_disk_detach),
80 static driver_t aac_disk_driver = {
83 sizeof(struct aac_disk)
86 #define AAC_MAXIO 65536
88 DRIVER_MODULE(aacd, aac, aac_disk_driver, aac_disk_devclass, 0, 0);
91 static unsigned int aac_iosize_max = AAC_MAXIO; /* due to limits of the card */
92 TUNABLE_INT("hw.aac.iosize_max", &aac_iosize_max);
95 SYSCTL_UINT(_hw_aac, OID_AUTO, iosize_max, CTLFLAG_RDTUN, &aac_iosize_max, 0,
96 "Max I/O size per transfer to an array");
99 * Handle open from generic layer.
101 * This is called by the diskslice code on first open in order to get the
102 * basic device geometry paramters.
105 aac_disk_open(struct disk *dp)
111 sc = (struct aac_disk *)dp->d_drv1;
114 printf("aac_disk_open: No Softc\n");
118 /* check that the controller is up and running */
119 if (sc->ad_controller->aac_state & AAC_STATE_SUSPEND) {
120 printf("Controller Suspended controller state = 0x%x\n",
121 sc->ad_controller->aac_state);
125 sc->ad_flags |= AAC_DISK_OPEN;
130 * Handle last close of the disk device.
133 aac_disk_close(struct disk *dp)
139 sc = (struct aac_disk *)dp->d_drv1;
144 sc->ad_flags &= ~AAC_DISK_OPEN;
149 * Handle an I/O request.
152 aac_disk_strategy(struct bio *bp)
158 sc = (struct aac_disk *)bp->bio_disk->d_drv1;
162 bp->bio_flags |= BIO_ERROR;
163 bp->bio_error = EINVAL;
168 /* do-nothing operation? */
169 if (bp->bio_bcount == 0) {
170 bp->bio_resid = bp->bio_bcount;
175 /* perform accounting */
177 /* pass the bio to the controller - it can work out who we are */
178 mtx_lock(&sc->ad_controller->aac_io_lock);
180 mtx_unlock(&sc->ad_controller->aac_io_lock);
186 * Map the S/G elements for doing a dump.
188 * XXX This does not handle >4GB of RAM. Fixing it is possible except on
189 * adapters that cannot do 64bit s/g lists.
192 aac_dump_map_sg(void *arg, bus_dma_segment_t *segs, int nsegs, int error)
195 struct aac_blockwrite *bw;
196 struct aac_sg_table *sg;
199 fib = (struct aac_fib *)arg;
200 bw = (struct aac_blockwrite *)&fib->data[0];
205 for (i = 0; i < nsegs; i++) {
206 if (segs[i].ds_addr >= BUS_SPACE_MAXADDR_32BIT)
208 sg->SgEntry[i].SgAddress = segs[i].ds_addr;
209 sg->SgEntry[i].SgByteCount = segs[i].ds_len;
211 fib->Header.Size = nsegs * sizeof(struct aac_sg_entry);
216 * Dump memory out to an array
218 * Send out one command at a time with up to AAC_MAXIO of data.
221 aac_disk_dump(void *arg, void *virtual, vm_offset_t physical, off_t offset, size_t length)
224 struct aac_softc *sc;
226 struct aac_blockwrite *bw;
229 static bus_dmamap_t dump_datamap;
230 static int first = 0;
239 sc= ad->ad_controller;
243 if (bus_dmamap_create(sc->aac_buffer_dmat, 0, &dump_datamap)) {
244 printf("bus_dmamap_create failed\n");
249 /* Skip aac_alloc_sync_fib(). We don't want to mess with sleep locks */
250 fib = &sc->aac_common->ac_sync_fib;
251 bw = (struct aac_blockwrite *)&fib->data[0];
254 len = (length > AAC_MAXIO) ? AAC_MAXIO : length;
255 bw->Command = VM_CtBlockWrite;
256 bw->ContainerId = ad->ad_container->co_mntobj.ObjectId;
257 bw->BlockNumber = offset / AAC_BLOCK_SIZE;
259 bw->Stable = CUNSTABLE;
262 * There really isn't any way to recover from errors or
263 * resource shortages here. Oh well. Because of that, don't
264 * bother trying to send the command from the callback; there
265 * is too much required context.
267 if (bus_dmamap_load(sc->aac_buffer_dmat, dump_datamap, virtual,
268 len, aac_dump_map_sg, fib, BUS_DMA_NOWAIT) != 0)
271 bus_dmamap_sync(sc->aac_buffer_dmat, dump_datamap,
272 BUS_DMASYNC_PREWRITE);
274 /* fib->Header.Size is set in aac_dump_map_sg */
275 size = fib->Header.Size + sizeof(struct aac_blockwrite);
277 if (aac_sync_fib(sc, ContainerCommand, 0, fib, size)) {
278 printf("Error dumping block 0x%jx\n",
279 (uintmax_t)physical);
283 bus_dmamap_sync(sc->aac_buffer_dmat, dump_datamap,
284 BUS_DMASYNC_POSTWRITE);
286 bus_dmamap_unload(sc->aac_buffer_dmat, dump_datamap);
290 virtual = (uint8_t *)virtual + len;
297 * Handle completion of an I/O request.
300 aac_biodone(struct bio *bp)
306 sc = (struct aac_disk *)bp->bio_disk->d_drv1;
308 if (bp->bio_flags & BIO_ERROR)
309 disk_err(bp, "hard error", -1, 1);
318 aac_disk_probe(device_t dev)
327 * Attach a unit to the controller.
330 aac_disk_attach(device_t dev)
336 sc = (struct aac_disk *)device_get_softc(dev);
338 /* initialise our softc */
340 (struct aac_softc *)device_get_softc(device_get_parent(dev));
341 sc->ad_container = device_get_ivars(dev);
345 * require that extended translation be enabled - other drivers read the
348 sc->ad_size = sc->ad_container->co_mntobj.Capacity;
349 if (sc->ad_size >= (2 * 1024 * 1024)) { /* 2GB */
352 } else if (sc->ad_size >= (1 * 1024 * 1024)) { /* 1GB */
359 sc->ad_cylinders = (sc->ad_size / (sc->ad_heads * sc->ad_sectors));
361 device_printf(dev, "%uMB (%u sectors)\n",
362 sc->ad_size / ((1024 * 1024) / AAC_BLOCK_SIZE),
365 /* attach a generic disk device to ourselves */
366 sc->unit = device_get_unit(dev);
367 sc->ad_disk = disk_alloc();
368 sc->ad_disk->d_drv1 = sc;
369 sc->ad_disk->d_name = "aacd";
370 sc->ad_disk->d_maxsize = aac_iosize_max;
371 sc->ad_disk->d_open = aac_disk_open;
372 sc->ad_disk->d_close = aac_disk_close;
373 sc->ad_disk->d_strategy = aac_disk_strategy;
374 sc->ad_disk->d_dump = aac_disk_dump;
375 sc->ad_disk->d_sectorsize = AAC_BLOCK_SIZE;
376 sc->ad_disk->d_mediasize = (off_t)sc->ad_size * AAC_BLOCK_SIZE;
377 sc->ad_disk->d_fwsectors = sc->ad_sectors;
378 sc->ad_disk->d_fwheads = sc->ad_heads;
379 sc->ad_disk->d_unit = sc->unit;
380 disk_create(sc->ad_disk, DISK_VERSION);
386 * Disconnect ourselves from the system.
389 aac_disk_detach(device_t dev)
395 sc = (struct aac_disk *)device_get_softc(dev);
397 if (sc->ad_flags & AAC_DISK_OPEN)
400 disk_destroy(sc->ad_disk);