/* $OpenBSD: octcf.c,v 1.36 2024/05/20 23:13:33 jsg Exp $ */ /* $NetBSD: wd.c,v 1.193 1999/02/28 17:15:27 explorer Exp $ */ /* * Copyright (c) 1998, 2001 Manuel Bouyer. 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. * 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. */ /*- * Copyright (c) 1998 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Charles M. Hannum and by Onno van der Linden. * * 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. * 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 NETBSD FOUNDATION, INC. AND CONTRIBUTORS * ``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 FOUNDATION OR CONTRIBUTORS * 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 #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #define OCTCF_REG_SIZE 8 #define ATAPARAMS_SIZE 512 #define SECTOR_SIZE 512 #define OCTCFDELAY 100 /* 100 microseconds */ #define NR_TRIES 1000 #define DEBUG_XFERS 0x02 #define DEBUG_FUNCS 0x08 #define DEBUG_PROBE 0x10 #ifdef OCTCFDEBUG int octcfdebug_mask = 0xff; #define OCTCFDEBUG_PRINT(args, level) do { \ if ((octcfdebug_mask & (level)) != 0) \ printf args; \ } while (0) #else #define OCTCFDEBUG_PRINT(args, level) #endif struct octcf_softc { /* General disk infos */ struct device sc_dev; struct disk sc_dk; struct bufq sc_bufq; struct buf *sc_bp; struct ataparams sc_params;/* drive characteristics found */ int sc_flags; #define OCTCFF_LOADED 0x10 /* parameters loaded */ u_int64_t sc_capacity; bus_space_tag_t sc_iot; bus_space_handle_t sc_ioh; }; int octcfprobe(struct device *, void *, void *); void octcfattach(struct device *, struct device *, void *); int octcfdetach(struct device *, int); int octcfactivate(struct device *, int); const struct cfattach octcf_ca = { sizeof(struct octcf_softc), octcfprobe, octcfattach, octcfdetach, octcfactivate }; struct cfdriver octcf_cd = { NULL, "octcf", DV_DISK }; void octcfgetdefaultlabel(struct octcf_softc *, struct disklabel *); int octcfgetdisklabel(dev_t dev, struct octcf_softc *, struct disklabel *, int); void octcfstrategy(struct buf *); void octcfstart(void *); void _octcfstart(struct octcf_softc*, struct buf *); void octcfdone(void *); cdev_decl(octcf); bdev_decl(octcf); #define octcflookup(unit) (struct octcf_softc *)disk_lookup(&octcf_cd, (unit)) int octcf_write_sectors(struct octcf_softc *, uint32_t, uint32_t, void *); int octcf_read_sectors(struct octcf_softc *, uint32_t, uint32_t, void *); int octcf_wait_busy(struct octcf_softc *); void octcf_command(struct octcf_softc *, uint32_t, uint8_t); int octcf_get_params(struct octcf_softc *, struct ataparams *); #define OCTCF_REG_READ(wd, reg) \ bus_space_read_2(wd->sc_iot, wd->sc_ioh, reg & 0x6) #define OCTCF_REG_WRITE(wd, reg, val) \ bus_space_write_2(wd->sc_iot, wd->sc_ioh, reg & 0x6, val) int octcfprobe(struct device *parent, void *match, void *aux) { if (octeon_boot_info->cf_common_addr == 0) { OCTCFDEBUG_PRINT(("%s: No cf bus found\n", __func__), DEBUG_FUNCS | DEBUG_PROBE); return 0; } return 1; } void octcfattach(struct device *parent, struct device *self, void *aux) { struct octcf_softc *wd = (void *)self; struct iobus_attach_args *aa = aux; int i, blank; char buf[41], c, *p, *q; uint8_t status; OCTCFDEBUG_PRINT(("%s\n", __func__), DEBUG_FUNCS | DEBUG_PROBE); wd->sc_iot = aa->aa_bust; if (bus_space_map(wd->sc_iot, aa->aa_addr, OCTCF_REG_SIZE, BUS_SPACE_MAP_KSEG0, &wd->sc_ioh)) { printf(": couldn't map registers\n"); return; } for (i = 0; i < 8; i++) { uint64_t cfg = *(uint64_t *)PHYS_TO_XKPHYS( OCTEON_MIO_BOOT_BASE + MIO_BOOT_REG_CFG(i), CCA_NC); if ((cfg & BOOT_CFG_BASE_MASK) == (OCTEON_CF_BASE >> BOOT_CFG_BASE_SHIFT)) { if ((cfg & BOOT_CFG_WIDTH_MASK) == 0) printf(": doesn't support 8bit cards\n"); break; } } /* Check if CF is inserted */ i = 0; while ( (status = (OCTCF_REG_READ(wd, wdr_status)>>8)) & WDCS_BSY) { if ((i++) == NR_TRIES ) { printf(": card not present\n"); return; } DELAY(OCTCFDELAY); } /* read our drive info */ if (octcf_get_params(wd, &wd->sc_params) != 0) { printf(": IDENTIFY failed\n"); return; } for (blank = 0, p = wd->sc_params.atap_model, q = buf, i = 0; i < sizeof(wd->sc_params.atap_model); i++) { c = *p++; if (c == '\0') break; if (c != ' ') { if (blank) { *q++ = ' '; blank = 0; } *q++ = c; } else blank = 1; } *q++ = '\0'; printf(": <%s>\n", buf); printf("%s: %d-sector PIO,", wd->sc_dev.dv_xname, wd->sc_params.atap_multi & 0xff); wd->sc_capacity = wd->sc_params.atap_cylinders * wd->sc_params.atap_heads * wd->sc_params.atap_sectors; printf(" CHS, %lluMB, %d cyl, %d head, %d sec, %llu sectors\n", wd->sc_capacity / (1048576 / DEV_BSIZE), wd->sc_params.atap_cylinders, wd->sc_params.atap_heads, wd->sc_params.atap_sectors, wd->sc_capacity); OCTCFDEBUG_PRINT( ("%s: atap_dmatiming_mimi=%d, atap_dmatiming_recom=%d\n", self->dv_xname, wd->sc_params.atap_dmatiming_mimi, wd->sc_params.atap_dmatiming_recom), DEBUG_PROBE); /* * Initialize disk structures. */ wd->sc_dk.dk_name = wd->sc_dev.dv_xname; bufq_init(&wd->sc_bufq, BUFQ_DEFAULT); /* Attach disk. */ disk_attach(&wd->sc_dev, &wd->sc_dk); } int octcfactivate(struct device *self, int act) { return 0; } int octcfdetach(struct device *self, int flags) { struct octcf_softc *sc = (struct octcf_softc *)self; bufq_drain(&sc->sc_bufq); disk_gone(octcfopen, self->dv_unit); /* Detach disk. */ bufq_destroy(&sc->sc_bufq); disk_detach(&sc->sc_dk); return (0); } /* * Read/write routine for a buffer. Validates the arguments and schedules the * transfer. Does not wait for the transfer to complete. */ void octcfstrategy(struct buf *bp) { struct octcf_softc *wd; int s; wd = octcflookup(DISKUNIT(bp->b_dev)); if (wd == NULL) { bp->b_error = ENXIO; goto bad; } OCTCFDEBUG_PRINT(("%s (%s)\n", __func__, wd->sc_dev.dv_xname), DEBUG_XFERS); /* If device invalidated (e.g. media change, door open), error. */ if ((wd->sc_flags & OCTCFF_LOADED) == 0) { bp->b_error = EIO; goto bad; } /* Validate the request. */ if (bounds_check_with_label(bp, wd->sc_dk.dk_label) == -1) goto done; /* Check that the number of sectors can fit in a byte. */ if ((bp->b_bcount / wd->sc_dk.dk_label->d_secsize) >= (1 << NBBY)) { bp->b_error = EINVAL; goto bad; } /* Queue transfer on drive, activate drive and controller if idle. */ bufq_queue(&wd->sc_bufq, bp); s = splbio(); octcfstart(wd); splx(s); device_unref(&wd->sc_dev); return; bad: bp->b_flags |= B_ERROR; bp->b_resid = bp->b_bcount; done: s = splbio(); biodone(bp); splx(s); if (wd != NULL) device_unref(&wd->sc_dev); } /* * Queue a drive for I/O. */ void octcfstart(void *arg) { struct octcf_softc *wd = arg; struct buf *bp; OCTCFDEBUG_PRINT(("%s %s\n", __func__, wd->sc_dev.dv_xname), DEBUG_XFERS); while ((bp = bufq_dequeue(&wd->sc_bufq)) != NULL) { /* Transfer this buffer now. */ _octcfstart(wd, bp); } } void _octcfstart(struct octcf_softc *wd, struct buf *bp) { struct disklabel *lp; u_int64_t secno; u_int64_t nsecs; lp = wd->sc_dk.dk_label; secno = DL_BLKTOSEC(lp, bp->b_blkno) + DL_GETPOFFSET(&lp->d_partitions[DISKPART(bp->b_dev)]); nsecs = howmany(bp->b_bcount, lp->d_secsize); wd->sc_bp = bp; /* Instrumentation. */ disk_busy(&wd->sc_dk); if (bp->b_flags & B_READ) bp->b_error = octcf_read_sectors(wd, nsecs, secno, bp->b_data); else bp->b_error = octcf_write_sectors(wd, nsecs, secno, bp->b_data); octcfdone(wd); } void octcfdone(void *arg) { struct octcf_softc *wd = arg; struct buf *bp = wd->sc_bp; if (bp->b_error == 0) bp->b_resid = 0; else bp->b_flags |= B_ERROR; disk_unbusy(&wd->sc_dk, (bp->b_bcount - bp->b_resid), bp->b_blkno, (bp->b_flags & B_READ)); biodone(bp); } int octcfread(dev_t dev, struct uio *uio, int flags) { OCTCFDEBUG_PRINT(("%s\n", __func__), DEBUG_XFERS); return (physio(octcfstrategy, dev, B_READ, minphys, uio)); } int octcfwrite(dev_t dev, struct uio *uio, int flags) { OCTCFDEBUG_PRINT(("%s\n", __func__), DEBUG_XFERS); return (physio(octcfstrategy, dev, B_WRITE, minphys, uio)); } int octcfopen(dev_t dev, int flag, int fmt, struct proc *p) { struct octcf_softc *wd; int unit, part; int error; OCTCFDEBUG_PRINT(("%s\n", __func__), DEBUG_FUNCS); unit = DISKUNIT(dev); wd = octcflookup(unit); if (wd == NULL) return ENXIO; /* * If this is the first open of this device, add a reference * to the adapter. */ if ((error = disk_lock(&wd->sc_dk)) != 0) goto bad4; if (wd->sc_dk.dk_openmask != 0) { /* * If any partition is open, but the disk has been invalidated, * disallow further opens. */ if ((wd->sc_flags & OCTCFF_LOADED) == 0) { error = EIO; goto bad3; } } else { if ((wd->sc_flags & OCTCFF_LOADED) == 0) { wd->sc_flags |= OCTCFF_LOADED; /* Load the physical device parameters. */ octcf_get_params(wd, &wd->sc_params); /* Load the partition info if not already loaded. */ if (octcfgetdisklabel(dev, wd, wd->sc_dk.dk_label, 0) == EIO) { error = EIO; goto bad; } } } part = DISKPART(dev); if ((error = disk_openpart(&wd->sc_dk, part, fmt, 1)) != 0) goto bad; disk_unlock(&wd->sc_dk); device_unref(&wd->sc_dev); return 0; bad: if (wd->sc_dk.dk_openmask == 0) { } bad3: disk_unlock(&wd->sc_dk); bad4: device_unref(&wd->sc_dev); return error; } int octcfclose(dev_t dev, int flag, int fmt, struct proc *p) { struct octcf_softc *wd; int part = DISKPART(dev); wd = octcflookup(DISKUNIT(dev)); if (wd == NULL) return ENXIO; OCTCFDEBUG_PRINT(("%s\n", __func__), DEBUG_FUNCS); disk_lock_nointr(&wd->sc_dk); disk_closepart(&wd->sc_dk, part, fmt); disk_unlock(&wd->sc_dk); device_unref(&wd->sc_dev); return (0); } void octcfgetdefaultlabel(struct octcf_softc *wd, struct disklabel *lp) { OCTCFDEBUG_PRINT(("%s\n", __func__), DEBUG_FUNCS); bzero(lp, sizeof(struct disklabel)); lp->d_secsize = DEV_BSIZE; DL_SETDSIZE(lp, wd->sc_capacity); lp->d_ntracks = wd->sc_params.atap_heads; lp->d_nsectors = wd->sc_params.atap_sectors; lp->d_secpercyl = lp->d_ntracks * lp->d_nsectors; lp->d_ncylinders = DL_GETDSIZE(lp) / lp->d_secpercyl; lp->d_type = DTYPE_ESDI; strncpy(lp->d_typename, "ESDI/IDE disk", sizeof lp->d_typename); /* XXX - user viscopy() like sd.c */ strncpy(lp->d_packname, wd->sc_params.atap_model, sizeof lp->d_packname); lp->d_version = 1; lp->d_magic = DISKMAGIC; lp->d_magic2 = DISKMAGIC; lp->d_checksum = dkcksum(lp); } /* * Fabricate a default disk label, and try to read the correct one. */ int octcfgetdisklabel(dev_t dev, struct octcf_softc *wd, struct disklabel *lp, int spoofonly) { int error; OCTCFDEBUG_PRINT(("%s\n", __func__), DEBUG_FUNCS); octcfgetdefaultlabel(wd, lp); error = readdisklabel(DISKLABELDEV(dev), octcfstrategy, lp, spoofonly); return (error); } int octcfioctl(dev_t dev, u_long xfer, caddr_t addr, int flag, struct proc *p) { struct octcf_softc *wd; struct disklabel *lp; int error = 0; OCTCFDEBUG_PRINT(("%s\n", __func__), DEBUG_FUNCS); wd = octcflookup(DISKUNIT(dev)); if (wd == NULL) return ENXIO; if ((wd->sc_flags & OCTCFF_LOADED) == 0) { error = EIO; goto exit; } switch (xfer) { case DIOCRLDINFO: lp = malloc(sizeof(*lp), M_TEMP, M_WAITOK); octcfgetdisklabel(dev, wd, lp, 0); bcopy(lp, wd->sc_dk.dk_label, sizeof(*lp)); free(lp, M_TEMP, sizeof(*lp)); goto exit; case DIOCGPDINFO: octcfgetdisklabel(dev, wd, (struct disklabel *)addr, 1); goto exit; case DIOCGDINFO: *(struct disklabel *)addr = *(wd->sc_dk.dk_label); goto exit; case DIOCGPART: ((struct partinfo *)addr)->disklab = wd->sc_dk.dk_label; ((struct partinfo *)addr)->part = &wd->sc_dk.dk_label->d_partitions[DISKPART(dev)]; goto exit; case DIOCWDINFO: case DIOCSDINFO: if ((flag & FWRITE) == 0) { error = EBADF; goto exit; } if ((error = disk_lock(&wd->sc_dk)) != 0) goto exit; error = setdisklabel(wd->sc_dk.dk_label, (struct disklabel *)addr, wd->sc_dk.dk_openmask); if (error == 0) { if (xfer == DIOCWDINFO) error = writedisklabel(DISKLABELDEV(dev), octcfstrategy, wd->sc_dk.dk_label); } disk_unlock(&wd->sc_dk); goto exit; default: error = ENOTTY; goto exit; } #ifdef DIAGNOSTIC panic("octcfioctl: impossible"); #endif exit: device_unref(&wd->sc_dev); return (error); } #ifdef B_FORMAT int wdformat(struct buf *bp) { bp->b_flags |= B_FORMAT; return octcfstrategy(bp); } #endif daddr_t octcfsize(dev_t dev) { struct octcf_softc *wd; struct disklabel *lp; int part, omask; daddr_t size; OCTCFDEBUG_PRINT(("%s\n", __func__), DEBUG_FUNCS); wd = octcflookup(DISKUNIT(dev)); if (wd == NULL) return (-1); part = DISKPART(dev); omask = wd->sc_dk.dk_openmask & (1 << part); if (omask == 0 && octcfopen(dev, 0, S_IFBLK, NULL) != 0) { size = -1; goto exit; } lp = wd->sc_dk.dk_label; size = DL_SECTOBLK(lp, DL_GETPSIZE(&lp->d_partitions[part])); if (omask == 0 && octcfclose(dev, 0, S_IFBLK, NULL) != 0) size = -1; exit: device_unref(&wd->sc_dev); return (size); } /* * Dump core after a system crash. */ int octcfdump(dev_t dev, daddr_t blkno, caddr_t va, size_t size) { return ENXIO; } int octcf_read_sectors(struct octcf_softc *wd, uint32_t nr_sectors, uint32_t start_sector, void *buf) { uint32_t count; uint16_t *ptr = (uint16_t*)buf; int error; uint8_t status; while (nr_sectors--) { while ((status = (OCTCF_REG_READ(wd, wdr_status)>>8)) & WDCS_BSY) DELAY(OCTCFDELAY); octcf_command(wd, start_sector++, WDCC_READ); error = octcf_wait_busy(wd); if (error != 0) return (error); volatile uint16_t dummy; for (count = 0; count < SECTOR_SIZE; count+=2) { uint16_t temp; temp = OCTCF_REG_READ(wd, 0x0); *ptr++ = swap16(temp); if ((count & 0xf) == 0) dummy = OCTCF_REG_READ(wd, wdr_status); } } return (0); } int octcf_write_sectors(struct octcf_softc *wd, uint32_t nr_sectors, uint32_t start_sector, void *buf) { uint32_t count; uint16_t *ptr = (uint16_t*)buf; int error; uint8_t status; while (nr_sectors--) { while ((status = (OCTCF_REG_READ(wd, wdr_status)>>8)) & WDCS_BSY) DELAY(OCTCFDELAY); octcf_command(wd, start_sector++, WDCC_WRITE); if((error = octcf_wait_busy(wd))) return (error); volatile uint16_t dummy; for (count = 0; count < SECTOR_SIZE; count+=2) { uint16_t temp = *ptr++; OCTCF_REG_WRITE(wd, 0x0, swap16(temp)); if ((count & 0xf) == 0) dummy = OCTCF_REG_READ(wd, wdr_status); } } return (0); } void octcf_command(struct octcf_softc *wd, uint32_t lba, uint8_t cmd) { OCTCF_REG_WRITE(wd, wdr_seccnt, 1 | ((lba & 0xff) << 8)); OCTCF_REG_WRITE(wd, wdr_cyl_lo, ((lba >> 8) & 0xff) | (((lba >> 16) & 0xff) << 8)); OCTCF_REG_WRITE(wd, wdr_sdh, (((lba >> 24) & 0xff) | 0xe0) | (cmd << 8)); } int octcf_wait_busy(struct octcf_softc *wd) { uint8_t status; status = OCTCF_REG_READ(wd, wdr_status)>>8; while ((status & WDCS_BSY) == WDCS_BSY) { if ((status & WDCS_DWF) != 0) return (EIO); DELAY(OCTCFDELAY); status = (uint8_t)(OCTCF_REG_READ(wd, wdr_status)>>8); } if ((status & WDCS_DRQ) == 0) return (ENXIO); return (0); } /* Get the disk's parameters */ int octcf_get_params(struct octcf_softc *wd, struct ataparams *params) { char *tb; int i; u_int16_t *p; int count; uint8_t status; int error; OCTCFDEBUG_PRINT(("%s\n", __func__), DEBUG_FUNCS); tb = malloc(ATAPARAMS_SIZE, M_DEVBUF, M_NOWAIT | M_ZERO); if (tb == NULL) return CMD_AGAIN; while ((status = (OCTCF_REG_READ(wd, wdr_status)>>8)) & WDCS_BSY) DELAY(OCTCFDELAY); OCTCF_REG_WRITE(wd, wdr_seccnt, 0); OCTCF_REG_WRITE(wd, wdr_cyl_lo, 0); OCTCF_REG_WRITE(wd, wdr_sdh, 0 | (WDCC_IDENTIFY<<8)); error = octcf_wait_busy(wd); if (error == 0) { for (count = 0; count < SECTOR_SIZE; count+=2) { uint16_t temp; temp = OCTCF_REG_READ(wd, 0x0); /* endianness will be swapped below */ tb[count] = (temp & 0xff); tb[count+1] = (temp & 0xff00)>>8; } } if (error != 0) { printf("%s: identify failed: %d\n", __func__, error); free(tb, M_DEVBUF, ATAPARAMS_SIZE); return CMD_ERR; } else { /* * All the fields in the params structure are 16-bit * integers except for the ID strings which are char * strings. The 16-bit integers are currently in * memory in little-endian, regardless of architecture. * So, they need to be swapped on big-endian architectures * before they are accessed through the ataparams structure. * * The swaps below avoid touching the char strings. */ swap16_multi((u_int16_t *)tb, 10); swap16_multi((u_int16_t *)tb + 20, 3); swap16_multi((u_int16_t *)tb + 47, ATAPARAMS_SIZE / 2 - 47); /* Read in parameter block. */ bcopy(tb, params, sizeof(struct ataparams)); /* * Shuffle string byte order. * ATAPI Mitsumi and NEC drives don't need this. */ if ((params->atap_config & WDC_CFG_ATAPI_MASK) == WDC_CFG_ATAPI && ((params->atap_model[0] == 'N' && params->atap_model[1] == 'E') || (params->atap_model[0] == 'F' && params->atap_model[1] == 'X'))) { free(tb, M_DEVBUF, ATAPARAMS_SIZE); return CMD_OK; } for (i = 0; i < sizeof(params->atap_model); i += 2) { p = (u_short *)(params->atap_model + i); *p = swap16(*p); } for (i = 0; i < sizeof(params->atap_serial); i += 2) { p = (u_short *)(params->atap_serial + i); *p = swap16(*p); } for (i = 0; i < sizeof(params->atap_revision); i += 2) { p = (u_short *)(params->atap_revision + i); *p = swap16(*p); } free(tb, M_DEVBUF, ATAPARAMS_SIZE); return CMD_OK; } }