Current Path : /sys/dev/ata/ |
FreeBSD hs32.drive.ne.jp 9.1-RELEASE FreeBSD 9.1-RELEASE #1: Wed Jan 14 12:18:08 JST 2015 root@hs32.drive.ne.jp:/sys/amd64/compile/hs32 amd64 |
Current File : //sys/dev/ata/atapi-tape.c |
/*- * Copyright (c) 1998 - 2008 Søren Schmidt <sos@FreeBSD.org> * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer, * without modification, immediately at the beginning of the file. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #include <sys/cdefs.h> __FBSDID("$FreeBSD: release/9.1.0/sys/dev/ata/atapi-tape.c 233717 2012-03-30 23:56:16Z marius $"); #include "opt_ata.h" #include <sys/param.h> #include <sys/systm.h> #include <sys/ata.h> #include <sys/kernel.h> #include <sys/module.h> #include <sys/malloc.h> #include <sys/conf.h> #include <sys/bio.h> #include <sys/bus.h> #include <sys/mtio.h> #include <sys/devicestat.h> #include <sys/sema.h> #include <sys/taskqueue.h> #include <vm/uma.h> #include <machine/bus.h> #include <dev/ata/ata-all.h> #include <dev/ata/atapi-tape.h> #include <ata_if.h> /* device structure */ static d_open_t ast_open; static d_close_t ast_close; static d_ioctl_t ast_ioctl; static d_strategy_t ast_strategy; static struct cdevsw ast_cdevsw = { .d_version = D_VERSION, .d_open = ast_open, .d_close = ast_close, .d_read = physread, .d_write = physwrite, .d_ioctl = ast_ioctl, .d_strategy = ast_strategy, .d_name = "ast", .d_flags = D_TAPE | D_TRACKCLOSE, }; /* prototypes */ static int ast_sense(device_t); static void ast_describe(device_t); static void ast_done(struct ata_request *); static int ast_mode_sense(device_t, int, void *, int); static int ast_mode_select(device_t, void *, int); static int ast_write_filemark(device_t, u_int8_t); static int ast_read_position(device_t, int, struct ast_readposition *); static int ast_space(device_t, u_int8_t, int32_t); static int ast_locate(device_t, int, u_int32_t); static int ast_prevent_allow(device_t, int); static int ast_load_unload(device_t, u_int8_t); static int ast_rewind(device_t); static int ast_erase(device_t); static int ast_test_ready(device_t); static int ast_wait_dsc(device_t, int); /* internal vars */ static u_int64_t ast_total = 0; static MALLOC_DEFINE(M_AST, "ast_driver", "ATAPI tape driver buffers"); static int ast_probe(device_t dev) { struct ata_device *atadev = device_get_softc(dev); if ((atadev->param.config & ATA_PROTO_ATAPI) && (atadev->param.config & ATA_ATAPI_TYPE_MASK) == ATA_ATAPI_TYPE_TAPE) return 0; else return ENXIO; } static int ast_attach(device_t dev) { struct ata_channel *ch = device_get_softc(device_get_parent(dev)); struct ata_device *atadev = device_get_softc(dev); struct ast_softc *stp; struct ast_readposition position; struct cdev *device; if (!(stp = malloc(sizeof(struct ast_softc), M_AST, M_NOWAIT | M_ZERO))) { device_printf(dev, "out of memory\n"); return ENOMEM; } device_set_ivars(dev, stp); ata_setmode(dev); if (ast_sense(dev)) { device_set_ivars(dev, NULL); free(stp, M_AST); return ENXIO; } if (!strcmp(atadev->param.model, "OnStream DI-30")) { struct ast_transferpage transfer; struct ast_identifypage identify; stp->flags |= F_ONSTREAM; bzero(&transfer, sizeof(struct ast_transferpage)); ast_mode_sense(dev, ATAPI_TAPE_TRANSFER_PAGE, &transfer, sizeof(transfer)); bzero(&identify, sizeof(struct ast_identifypage)); ast_mode_sense(dev, ATAPI_TAPE_IDENTIFY_PAGE, &identify, sizeof(identify)); strncpy(identify.ident, "FBSD", 4); ast_mode_select(dev, &identify, sizeof(identify)); ast_read_position(dev, 0, &position); } stp->stats = devstat_new_entry("ast", device_get_unit(dev), DEV_BSIZE, DEVSTAT_NO_ORDERED_TAGS, DEVSTAT_TYPE_SEQUENTIAL | DEVSTAT_TYPE_IF_IDE, DEVSTAT_PRIORITY_TAPE); device = make_dev(&ast_cdevsw, 0, UID_ROOT, GID_OPERATOR, 0640, "ast%d", device_get_unit(dev)); device->si_drv1 = dev; device->si_iosize_max = ch->dma.max_iosize ? ch->dma.max_iosize : DFLTPHYS; stp->dev1 = device; device = make_dev(&ast_cdevsw, 1, UID_ROOT, GID_OPERATOR, 0640, "nast%d", device_get_unit(dev)); device->si_drv1 = dev; device->si_iosize_max = ch->dma.max_iosize; stp->dev2 = device; /* announce we are here and ready */ ast_describe(dev); return 0; } static int ast_detach(device_t dev) { struct ast_softc *stp = device_get_ivars(dev); /* detroy devices from the system so we dont get any further requests */ destroy_dev(stp->dev1); destroy_dev(stp->dev2); /* fail requests on the queue and any thats "in flight" for this device */ ata_fail_requests(dev); /* dont leave anything behind */ devstat_remove_entry(stp->stats); device_set_ivars(dev, NULL); free(stp, M_AST); return 0; } static int ast_shutdown(device_t dev) { struct ata_device *atadev = device_get_softc(dev); if (atadev->param.support.command2 & ATA_SUPPORT_FLUSHCACHE) ata_controlcmd(dev, ATA_FLUSHCACHE, 0, 0, 0); return 0; } static int ast_reinit(device_t dev) { struct ata_channel *ch = device_get_softc(device_get_parent(dev)); struct ata_device *atadev = device_get_softc(dev); /* if detach pending, return error */ if (!(ch->devices & (ATA_ATAPI_MASTER << atadev->unit))) return 1; ata_setmode(dev); return 0; } static int ast_open(struct cdev *cdev, int flags, int fmt, struct thread *td) { device_t dev = cdev->si_drv1; struct ata_device *atadev = device_get_softc(dev); struct ast_softc *stp = device_get_ivars(dev); if (!stp) return ENXIO; if (!device_is_attached(dev)) return EBUSY; ast_test_ready(dev); if (stp->cap.lock) ast_prevent_allow(dev, 1); if (ast_sense(dev)) device_printf(dev, "sense media type failed\n"); atadev->flags &= ~ATA_D_MEDIA_CHANGED; stp->flags &= ~(F_DATA_WRITTEN | F_FM_WRITTEN); ast_total = 0; return 0; } static int ast_close(struct cdev *cdev, int flags, int fmt, struct thread *td) { device_t dev = cdev->si_drv1; struct ast_softc *stp = device_get_ivars(dev); /* flush buffers, some drives fail here, they should report ctl = 0 */ if (stp->cap.ctl && (stp->flags & F_DATA_WRITTEN)) ast_write_filemark(dev, 0); /* write filemark if data written to tape */ if (!(stp->flags & F_ONSTREAM) && (stp->flags & (F_DATA_WRITTEN | F_FM_WRITTEN)) == F_DATA_WRITTEN) ast_write_filemark(dev, ATAPI_WF_WRITE); /* if unit is zero rewind on close */ if (dev2unit(cdev) == 0) ast_rewind(dev); if (stp->cap.lock && count_dev(cdev) == 1) ast_prevent_allow(dev, 0); stp->flags &= ~F_CTL_WARN; #ifdef AST_DEBUG device_printf(dev, "%ju total bytes transferred\n", (uintmax_t)ast_total); #endif return 0; } static int ast_ioctl(struct cdev *cdev, u_long cmd, caddr_t data, int flag, struct thread *td) { device_t dev = cdev->si_drv1; struct ast_softc *stp = device_get_ivars(dev); int error = 0; switch (cmd) { case MTIOCGET: { struct mtget *g = (struct mtget *) data; bzero(g, sizeof(struct mtget)); g->mt_type = 7; g->mt_density = 1; g->mt_blksiz = stp->blksize; g->mt_comp = stp->cap.compress; g->mt_density0 = 0; g->mt_density1 = 0; g->mt_density2 = 0; g->mt_density3 = 0; g->mt_blksiz0 = 0; g->mt_blksiz1 = 0; g->mt_blksiz2 = 0; g->mt_blksiz3 = 0; g->mt_comp0 = 0; g->mt_comp1 = 0; g->mt_comp2 = 0; g->mt_comp3 = 0; } break; case MTIOCTOP: { int i; struct mtop *mt = (struct mtop *)data; switch ((int16_t) (mt->mt_op)) { case MTWEOF: for (i=0; i < mt->mt_count && !error; i++) error = ast_write_filemark(dev, ATAPI_WF_WRITE); break; case MTFSF: if (mt->mt_count) error = ast_space(dev, ATAPI_SP_FM, mt->mt_count); break; case MTBSF: if (mt->mt_count) error = ast_space(dev, ATAPI_SP_FM, -(mt->mt_count)); break; case MTREW: error = ast_rewind(dev); break; case MTOFFL: error = ast_load_unload(dev, ATAPI_SS_EJECT); break; case MTNOP: error = ast_write_filemark(dev, 0); break; case MTERASE: error = ast_erase(dev); break; case MTEOD: error = ast_space(dev, ATAPI_SP_EOD, 0); break; case MTRETENS: error = ast_load_unload(dev, ATAPI_SS_RETENSION|ATAPI_SS_LOAD); break; case MTFSR: case MTBSR: case MTCACHE: case MTNOCACHE: case MTSETBSIZ: case MTSETDNSTY: case MTCOMP: default: error = EINVAL; } } break; case MTIOCRDSPOS: { struct ast_readposition position; if ((error = ast_read_position(dev, 0, &position))) break; *(u_int32_t *)data = position.tape; } break; case MTIOCRDHPOS: { struct ast_readposition position; if ((error = ast_read_position(dev, 1, &position))) break; *(u_int32_t *)data = position.tape; } break; case MTIOCSLOCATE: error = ast_locate(dev, 0, *(u_int32_t *)data); break; case MTIOCHLOCATE: error = ast_locate(dev, 1, *(u_int32_t *)data); break; default: error = ata_device_ioctl(dev, cmd, data); } return error; } static void ast_strategy(struct bio *bp) { device_t dev = bp->bio_dev->si_drv1; struct ast_softc *stp = device_get_ivars(dev); struct ata_request *request; u_int32_t blkcount; int8_t ccb[16]; /* if it's a null transfer, return immediatly. */ if (bp->bio_bcount == 0) { bp->bio_resid = 0; biodone(bp); return; } if (!(bp->bio_cmd == BIO_READ) && stp->flags & F_WRITEPROTECT) { biofinish(bp, NULL, EPERM); return; } /* check for != blocksize requests */ if (bp->bio_bcount % stp->blksize) { device_printf(dev, "transfers must be multiple of %d\n", stp->blksize); biofinish(bp, NULL, EIO); return; } /* warn about transfers bigger than the device suggests */ if (bp->bio_bcount > stp->blksize * stp->cap.ctl) { if ((stp->flags & F_CTL_WARN) == 0) { device_printf(dev, "WARNING: CTL exceeded %ld>%d\n", bp->bio_bcount, stp->blksize * stp->cap.ctl); stp->flags |= F_CTL_WARN; } } bzero(ccb, sizeof(ccb)); if (bp->bio_cmd == BIO_READ) ccb[0] = ATAPI_READ; else ccb[0] = ATAPI_WRITE; blkcount = bp->bio_bcount / stp->blksize; ccb[1] = 1; ccb[2] = blkcount >> 16; ccb[3] = blkcount >> 8; ccb[4] = blkcount; if (!(request = ata_alloc_request())) { biofinish(bp, NULL, ENOMEM); return; } request->dev = dev; request->driver = bp; bcopy(ccb, request->u.atapi.ccb, 16); request->data = bp->bio_data; request->bytecount = blkcount * stp->blksize; request->transfersize = min(request->bytecount, 65534); request->timeout = (ccb[0] == ATAPI_WRITE_BIG) ? 180 : 120; request->retries = 2; request->callback = ast_done; switch (bp->bio_cmd) { case BIO_READ: request->flags |= (ATA_R_ATAPI | ATA_R_READ); break; case BIO_WRITE: request->flags |= (ATA_R_ATAPI | ATA_R_WRITE); break; default: device_printf(dev, "unknown BIO operation\n"); ata_free_request(request); biofinish(bp, NULL, EIO); return; } devstat_start_transaction_bio(stp->stats, bp); ata_queue_request(request); } static void ast_done(struct ata_request *request) { struct ast_softc *stp = device_get_ivars(request->dev); struct bio *bp = request->driver; /* finish up transfer */ if ((bp->bio_error = request->result)) bp->bio_flags |= BIO_ERROR; if (bp->bio_cmd == BIO_WRITE) stp->flags |= F_DATA_WRITTEN; bp->bio_resid = bp->bio_bcount - request->donecount; ast_total += (bp->bio_bcount - bp->bio_resid); biofinish(bp, stp->stats, 0); ata_free_request(request); } static int ast_sense(device_t dev) { struct ast_softc *stp = device_get_ivars(dev); int count; /* get drive capabilities, some bugridden drives needs this repeated */ for (count = 0 ; count < 5 ; count++) { if (!ast_mode_sense(dev, ATAPI_TAPE_CAP_PAGE, &stp->cap, sizeof(stp->cap)) && stp->cap.page_code == ATAPI_TAPE_CAP_PAGE) { if (stp->cap.blk32k) stp->blksize = 32768; if (stp->cap.blk1024) stp->blksize = 1024; if (stp->cap.blk512) stp->blksize = 512; if (!stp->blksize) continue; stp->cap.max_speed = ntohs(stp->cap.max_speed); stp->cap.max_defects = ntohs(stp->cap.max_defects); stp->cap.ctl = ntohs(stp->cap.ctl); stp->cap.speed = ntohs(stp->cap.speed); stp->cap.buffer_size = ntohs(stp->cap.buffer_size); return 0; } } return 1; } static int ast_mode_sense(device_t dev, int page, void *pagebuf, int pagesize) { int8_t ccb[16] = { ATAPI_MODE_SENSE, 0x08, page, pagesize>>8, pagesize, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }; int error; error = ata_atapicmd(dev, ccb, pagebuf, pagesize, ATA_R_READ, 10); return error; } static int ast_mode_select(device_t dev, void *pagebuf, int pagesize) { int8_t ccb[16] = { ATAPI_MODE_SELECT, 0x10, 0, pagesize>>8, pagesize, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }; return ata_atapicmd(dev, ccb, pagebuf, pagesize, 0, 10); } static int ast_write_filemark(device_t dev, u_int8_t function) { struct ast_softc *stp = device_get_ivars(dev); int8_t ccb[16] = { ATAPI_WEOF, 0x01, 0, 0, function, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }; int error; if (stp->flags & F_ONSTREAM) ccb[4] = 0x00; /* only flush buffers supported */ else { if (function) { if (stp->flags & F_FM_WRITTEN) stp->flags &= ~F_DATA_WRITTEN; else stp->flags |= F_FM_WRITTEN; } } error = ata_atapicmd(dev, ccb, NULL, 0, 0, 10); if (error) return error; return ast_wait_dsc(dev, 10*60); } static int ast_read_position(device_t dev, int hard, struct ast_readposition *position) { int8_t ccb[16] = { ATAPI_READ_POSITION, (hard ? 0x01 : 0), 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }; int error; error = ata_atapicmd(dev, ccb, (caddr_t)position, sizeof(struct ast_readposition), ATA_R_READ, 10); position->tape = ntohl(position->tape); position->host = ntohl(position->host); return error; } static int ast_space(device_t dev, u_int8_t function, int32_t count) { int8_t ccb[16] = { ATAPI_SPACE, function, count>>16, count>>8, count, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }; return ata_atapicmd(dev, ccb, NULL, 0, 0, 60*60); } static int ast_locate(device_t dev, int hard, u_int32_t pos) { int8_t ccb[16] = { ATAPI_LOCATE, 0x01 | (hard ? 0x4 : 0), 0, pos>>24, pos>>16, pos>>8, pos, 0, 0, 0, 0, 0, 0, 0, 0, 0 }; int error; error = ata_atapicmd(dev, ccb, NULL, 0, 0, 10); if (error) return error; return ast_wait_dsc(dev, 60*60); } static int ast_prevent_allow(device_t dev, int lock) { int8_t ccb[16] = { ATAPI_PREVENT_ALLOW, 0, 0, 0, lock, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }; return ata_atapicmd(dev, ccb, NULL, 0, 0, 30); } static int ast_load_unload(device_t dev, u_int8_t function) { struct ast_softc *stp = device_get_ivars(dev); int8_t ccb[16] = { ATAPI_START_STOP, 0x01, 0, 0, function, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }; int error; if ((function & ATAPI_SS_EJECT) && !stp->cap.eject) return 0; error = ata_atapicmd(dev, ccb, NULL, 0, 0, 10); if (error) return error; pause("astlu", 1 * hz); if (function == ATAPI_SS_EJECT) return 0; return ast_wait_dsc(dev, 60*60); } static int ast_rewind(device_t dev) { int8_t ccb[16] = { ATAPI_REZERO, 0x01, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }; int error; error = ata_atapicmd(dev, ccb, NULL, 0, 0, 10); if (error) return error; return ast_wait_dsc(dev, 60*60); } static int ast_erase(device_t dev) { int8_t ccb[16] = { ATAPI_ERASE, 3, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }; int error; if ((error = ast_rewind(dev))) return error; return ata_atapicmd(dev, ccb, NULL, 0, 0, 60*60); } static int ast_test_ready(device_t dev) { int8_t ccb[16] = { ATAPI_TEST_UNIT_READY, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }; return ata_atapicmd(dev, ccb, NULL, 0, 0, 30); } static int ast_wait_dsc(device_t dev, int timeout) { int error = 0; int8_t ccb[16] = { ATAPI_POLL_DSC, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }; timeout *= hz; while (timeout > 0) { error = ata_atapicmd(dev, ccb, NULL, 0, 0, 0); if (error != EBUSY) break; pause("atpwt", hz / 2); timeout -= (hz / 2); } return error; } static void ast_describe(device_t dev) { struct ata_channel *ch = device_get_softc(device_get_parent(dev)); struct ata_device *atadev = device_get_softc(dev); struct ast_softc *stp = device_get_ivars(dev); if (bootverbose) { device_printf(dev, "<%.40s/%.8s> tape drive at ata%d as %s\n", atadev->param.model, atadev->param.revision, device_get_unit(ch->dev), ata_unit2str(atadev)); device_printf(dev, "%dKB/s, ", stp->cap.max_speed); printf("transfer limit %d blk%s, ", stp->cap.ctl, (stp->cap.ctl > 1) ? "s" : ""); printf("%dKB buffer, ", (stp->cap.buffer_size * DEV_BSIZE) / 1024); printf("%s %s\n", ata_mode2str(atadev->mode), ata_satarev2str(ATA_GETREV(device_get_parent(dev), atadev->unit))); device_printf(dev, "Medium: "); switch (stp->cap.medium_type) { case 0x00: printf("none"); break; case 0x17: printf("Travan 1 (400 Mbyte)"); break; case 0xb6: printf("Travan 4 (4 Gbyte)"); break; case 0xda: printf("OnStream ADR (15Gyte)"); break; default: printf("unknown (0x%x)", stp->cap.medium_type); } if (stp->cap.readonly) printf(", readonly"); if (stp->cap.reverse) printf(", reverse"); if (stp->cap.eformat) printf(", eformat"); if (stp->cap.qfa) printf(", qfa"); if (stp->cap.lock) printf(", lock"); if (stp->cap.locked) printf(", locked"); if (stp->cap.prevent) printf(", prevent"); if (stp->cap.eject) printf(", eject"); if (stp->cap.disconnect) printf(", disconnect"); if (stp->cap.ecc) printf(", ecc"); if (stp->cap.compress) printf(", compress"); if (stp->cap.blk512) printf(", 512b"); if (stp->cap.blk1024) printf(", 1024b"); if (stp->cap.blk32k) printf(", 32kb"); printf("\n"); } else { device_printf(dev, "TAPE <%.40s/%.8s> at ata%d-%s %s %s\n", atadev->param.model, atadev->param.revision, device_get_unit(ch->dev), ata_unit2str(atadev), ata_mode2str(atadev->mode), ata_satarev2str(ATA_GETREV(device_get_parent(dev), atadev->unit))); } } static device_method_t ast_methods[] = { /* device interface */ DEVMETHOD(device_probe, ast_probe), DEVMETHOD(device_attach, ast_attach), DEVMETHOD(device_detach, ast_detach), DEVMETHOD(device_shutdown, ast_shutdown), /* ATA methods */ DEVMETHOD(ata_reinit, ast_reinit), DEVMETHOD_END }; static driver_t ast_driver = { "ast", ast_methods, 0, }; static devclass_t ast_devclass; DRIVER_MODULE(ast, ata, ast_driver, ast_devclass, NULL, NULL); MODULE_VERSION(ast, 1); MODULE_DEPEND(ast, ata, 1, 1, 1);