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31 * $FreeBSD: src/sys/dev/mfi/mfi_pddisk.c,v 1.2.2.6 2007/08/24 17:29:18 jhb Exp $
36 #include <sys/param.h>
37 #include <sys/systm.h>
38 #include <sys/kernel.h>
39 #include <sys/module.h>
40 #include <sys/malloc.h>
52 #include <machine/md_var.h>
55 #include <dev/raid/mfi/mfireg.h>
56 #include <dev/raid/mfi/mfi_ioctl.h>
57 #include <dev/raid/mfi/mfivar.h>
59 static int mfi_syspd_probe(device_t dev);
60 static int mfi_syspd_attach(device_t dev);
61 static int mfi_syspd_detach(device_t dev);
63 static d_open_t mfi_syspd_open;
64 static d_close_t mfi_syspd_close;
65 static d_strategy_t mfi_syspd_strategy;
66 static d_dump_t mfi_syspd_dump;
68 static struct dev_ops mfi_syspd_ops = {
69 { "mfisyspd", 0, D_DISK },
70 .d_open = mfi_syspd_open,
71 .d_close = mfi_syspd_close,
72 .d_strategy = mfi_syspd_strategy,
73 .d_dump = mfi_syspd_dump,
76 static devclass_t mfi_syspd_devclass;
78 static device_method_t mfi_syspd_methods[] = {
79 DEVMETHOD(device_probe, mfi_syspd_probe),
80 DEVMETHOD(device_attach, mfi_syspd_attach),
81 DEVMETHOD(device_detach, mfi_syspd_detach),
85 static driver_t mfi_syspd_driver = {
88 sizeof(struct mfi_system_pd)
91 DRIVER_MODULE(mfisyspd, mfi, mfi_syspd_driver, mfi_syspd_devclass, NULL, NULL);
94 mfi_syspd_probe(device_t dev)
101 mfi_syspd_attach(device_t dev)
103 struct mfi_system_pd *sc;
104 struct mfi_pd_info *pd_info;
105 struct disk_info info;
109 sc = device_get_softc(dev);
110 pd_info = device_get_ivars(dev);
113 sc->pd_id = pd_info->ref.v.device_id;
114 sc->pd_unit = device_get_unit(dev);
115 sc->pd_info = pd_info;
116 sc->pd_controller = device_get_softc(device_get_parent(dev));
117 sc->pd_flags = MFI_DISK_FLAGS_SYSPD;
119 sectors = pd_info->raw_size;
120 secsize = MFI_SECTOR_LEN;
121 lockmgr(&sc->pd_controller->mfi_io_lock, LK_EXCLUSIVE);
122 TAILQ_INSERT_TAIL(&sc->pd_controller->mfi_syspd_tqh, sc, pd_link);
123 lockmgr(&sc->pd_controller->mfi_io_lock, LK_RELEASE);
124 device_printf(dev, "%juMB (%ju sectors) SYSPD volume\n",
125 sectors / (1024 * 1024 / secsize), sectors);
127 devstat_add_entry(&sc->pd_devstat, "mfisyspd", device_get_unit(dev),
128 MFI_SECTOR_LEN, DEVSTAT_NO_ORDERED_TAGS,
129 DEVSTAT_TYPE_STORARRAY | DEVSTAT_TYPE_IF_OTHER,
130 DEVSTAT_PRIORITY_ARRAY);
132 sc->pd_dev_t = disk_create(sc->pd_unit, &sc->pd_disk, &mfi_syspd_ops);
133 sc->pd_dev_t->si_drv1 = sc;
134 sc->pd_dev_t->si_iosize_max = sc->pd_controller->mfi_max_io *
137 bzero(&info, sizeof(info));
138 info.d_media_blksize = secsize; /* mandatory */
139 info.d_media_blocks = sectors;
141 if (info.d_media_blocks >= (1 * 1024 * 1024)) {
143 info.d_secpertrack = 63;
146 info.d_secpertrack = 32;
149 disk_setdiskinfo(&sc->pd_disk, &info);
155 mfi_syspd_detach(device_t dev)
157 struct mfi_system_pd *sc;
159 sc = device_get_softc(dev);
160 lockmgr(&sc->pd_controller->mfi_io_lock, LK_EXCLUSIVE);
161 if ((sc->pd_flags & MFI_DISK_FLAGS_OPEN) &&
162 (sc->pd_controller->mfi_keep_deleted_volumes ||
163 sc->pd_controller->mfi_detaching)) {
164 lockmgr(&sc->pd_controller->mfi_io_lock, LK_RELEASE);
167 lockmgr(&sc->pd_controller->mfi_io_lock, LK_RELEASE);
169 disk_destroy(&sc->pd_disk);
170 devstat_remove_entry(&sc->pd_devstat);
171 lockmgr(&sc->pd_controller->mfi_io_lock, LK_EXCLUSIVE);
172 TAILQ_REMOVE(&sc->pd_controller->mfi_syspd_tqh, sc, pd_link);
173 lockmgr(&sc->pd_controller->mfi_io_lock, LK_RELEASE);
174 kfree(sc->pd_info, M_MFIBUF);
179 mfi_syspd_open(struct dev_open_args *ap)
181 struct mfi_system_pd *sc = ap->a_head.a_dev->si_drv1;
184 lockmgr(&sc->pd_controller->mfi_io_lock, LK_EXCLUSIVE);
185 if (sc->pd_flags & MFI_DISK_FLAGS_DISABLED)
188 sc->pd_flags |= MFI_DISK_FLAGS_OPEN;
191 lockmgr(&sc->pd_controller->mfi_io_lock, LK_RELEASE);
196 mfi_syspd_close(struct dev_close_args *ap)
198 struct mfi_system_pd *sc = ap->a_head.a_dev->si_drv1;
200 lockmgr(&sc->pd_controller->mfi_io_lock, LK_EXCLUSIVE);
201 sc->pd_flags &= ~MFI_DISK_FLAGS_OPEN;
202 lockmgr(&sc->pd_controller->mfi_io_lock, LK_RELEASE);
208 mfi_syspd_disable(struct mfi_system_pd *sc)
211 KKASSERT(lockstatus(&sc->pd_controller->mfi_io_lock, curthread) != 0);
212 if (sc->pd_flags & MFI_DISK_FLAGS_OPEN) {
213 if (sc->pd_controller->mfi_delete_busy_volumes)
215 device_printf(sc->pd_dev, "Unable to delete busy syspd device\n");
218 sc->pd_flags |= MFI_DISK_FLAGS_DISABLED;
223 mfi_syspd_enable(struct mfi_system_pd *sc)
226 KKASSERT(lockstatus(&sc->pd_controller->mfi_io_lock, curthread) != 0);
227 sc->pd_flags &= ~MFI_DISK_FLAGS_DISABLED;
231 mfi_syspd_strategy(struct dev_strategy_args *ap)
233 struct bio *bio = ap->a_bio;
234 struct buf *bp = bio->bio_buf;
235 struct mfi_system_pd *sc = ap->a_head.a_dev->si_drv1;
236 struct mfi_softc *controller;
239 bp->b_error = EINVAL;
240 bp->b_flags |= B_ERROR;
241 bp->b_resid = bp->b_bcount;
249 * If it's a null transfer, do nothing. FreeBSD's original driver
250 * doesn't have this, but that caused hard error messages (even
251 * though everything else continued to work fine). Interestingly,
252 * only when HAMMER was used.
254 * Several others of our RAID drivers have this check, such as
255 * aac(4) and ida(4), so we insert it here, too.
257 * The cause of null transfers is yet unknown.
259 if (bp->b_bcount == 0) {
260 bp->b_resid = bp->b_bcount;
265 controller = sc->pd_controller;
266 bio->bio_driver_info = sc;
267 lockmgr(&controller->mfi_io_lock, LK_EXCLUSIVE);
268 mfi_enqueue_bio(controller, bio);
269 devstat_start_transaction(&sc->pd_devstat);
270 mfi_startio(controller);
271 lockmgr(&controller->mfi_io_lock, LK_RELEASE);
277 mfi_disk_complete(struct bio *bio)
279 struct mfi_system_pd *sc = bio->bio_driver_info;
280 struct buf *bp = bio->bio_buf;
282 devstat_end_transaction_buf(&sc->pd_devstat, bp);
283 if (bio->b_flags & B_ERROR) {
284 if (bp->b_error == 0)
286 diskerr(bio, sc->pd_disk.d_cdev, "hard error", -1, 1);
296 mfi_syspd_dump(struct dev_dump_args *ap)
298 cdev_t dev = ap->a_head.a_dev;
299 off_t offset = ap->a_offset;
300 void *virt = ap->a_virtual;
301 size_t len = ap->a_length;
302 struct mfi_system_pd *sc;
303 struct mfi_softc *parent_sc;
307 parent_sc = sc->pd_controller;
310 if ((error = mfi_dump_syspd_blocks(parent_sc, sc->pd_id, offset /
311 MFI_SECTOR_LEN, virt, len)) != 0)
314 /* mfi_sync_cache(parent_sc, sc->ld_id); */