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-rw-r--r--scsi/scsi_disk.c624
1 files changed, 624 insertions, 0 deletions
diff --git a/scsi/scsi_disk.c b/scsi/scsi_disk.c
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+/*
+ * Mach Operating System
+ * Copyright (c) 1991,1990 Carnegie Mellon University
+ * All Rights Reserved.
+ *
+ * Permission to use, copy, modify and distribute this software and its
+ * documentation is hereby granted, provided that both the copyright
+ * notice and this permission notice appear in all copies of the
+ * software, derivative works or modified versions, and any portions
+ * thereof, and that both notices appear in supporting documentation.
+ *
+ * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
+ * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
+ * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
+ *
+ * Carnegie Mellon requests users of this software to return to
+ *
+ * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
+ * School of Computer Science
+ * Carnegie Mellon University
+ * Pittsburgh PA 15213-3890
+ *
+ * any improvements or extensions that they make and grant Carnegie Mellon
+ * the rights to redistribute these changes.
+ */
+/*
+ * File: scsi_disk.c
+ * Author: Alessandro Forin, Carnegie Mellon University
+ * Date: 10/90
+ *
+ * Middle layer of the SCSI driver: SCSI protocol implementation
+ *
+ * This file contains code for SCSI commands for DISK devices.
+ */
+
+#include <string.h>
+
+#include <mach/std_types.h>
+#include <scsi/compat_30.h>
+
+#include <scsi/scsi.h>
+#include <scsi/scsi2.h>
+#include <scsi/scsi_defs.h>
+
+#if (NSCSI > 0)
+
+
+char *scdisk_name(internal)
+ boolean_t internal;
+{
+ return internal ? "rz" : "disk";
+}
+
+/*
+ * SCSI commands partially specific to disks
+ */
+void scdisk_read( tgt, secno, ior)
+ register target_info_t *tgt;
+ register unsigned int secno;
+ io_req_t ior;
+{
+ scsi_cmd_read_t *cmd;
+ register unsigned len;
+ unsigned int max_dma_data;
+
+ max_dma_data = scsi_softc[(unsigned char)tgt->masterno]->max_dma_data;
+
+ len = ior->io_count;
+ if (len > max_dma_data)
+ len = max_dma_data;
+ if (len < tgt->block_size)
+ len = tgt->block_size;
+
+ cmd = (scsi_cmd_read_t*) (tgt->cmd_ptr);
+ cmd->scsi_cmd_code = SCSI_CMD_READ;
+ cmd->scsi_cmd_lun_and_lba1 = (secno>>16)&SCSI_LBA_MASK;
+ cmd->scsi_cmd_lba2 = (secno>> 8)&0xff;
+ cmd->scsi_cmd_lba3 = (secno )&0xff;
+ cmd->scsi_cmd_xfer_len = len / tgt->block_size;
+ cmd->scsi_cmd_ctrl_byte = 0; /* not linked */
+
+ tgt->cur_cmd = SCSI_CMD_READ;
+
+ scsi_go(tgt, sizeof(*cmd), len, FALSE);
+}
+
+void scdisk_write( tgt, secno, ior)
+ register target_info_t *tgt;
+ register unsigned int secno;
+ io_req_t ior;
+{
+ scsi_cmd_write_t *cmd;
+ unsigned len; /* in bytes */
+ unsigned int max_dma_data;
+
+ max_dma_data = scsi_softc[(unsigned char)tgt->masterno]->max_dma_data;
+
+ len = ior->io_count;
+ if (len > max_dma_data)
+ len = max_dma_data;
+ if (len < tgt->block_size)
+ len = tgt->block_size;
+
+ cmd = (scsi_cmd_write_t*) (tgt->cmd_ptr);
+ cmd->scsi_cmd_code = SCSI_CMD_WRITE;
+ cmd->scsi_cmd_lun_and_lba1 = (secno>>16)&SCSI_LBA_MASK;
+ cmd->scsi_cmd_lba2 = (secno>> 8)&0xff;
+ cmd->scsi_cmd_lba3 = (secno )&0xff;
+ cmd->scsi_cmd_xfer_len = len / tgt->block_size;
+ cmd->scsi_cmd_ctrl_byte = 0; /* not linked */
+
+ tgt->cur_cmd = SCSI_CMD_WRITE;
+
+ scsi_go(tgt, sizeof(*cmd), 0, FALSE);
+}
+
+
+int scdisk_mode_select(tgt, lbn, ior, mdata, mlen, save)
+ register target_info_t *tgt;
+ register int lbn;
+ io_req_t ior;
+ char *mdata;
+ int mlen, save;
+{
+ scsi_cmd_mode_select_t *cmd;
+ scsi_mode_select_param_t *parm;
+
+ bzero(tgt->cmd_ptr, sizeof(*cmd) + sizeof(*parm));
+ cmd = (scsi_cmd_mode_select_t*) (tgt->cmd_ptr);
+ cmd->scsi_cmd_code = SCSI_CMD_MODE_SELECT;
+ cmd->scsi_cmd_lun_and_lba1 = SCSI_CMD_MSL_PF; /* XXX only if... */
+ cmd->scsi_cmd_xfer_len = sizeof(scsi_mode_select_param_t);/* no vuq */
+
+ parm = (scsi_mode_select_param_t*) (cmd + 1);
+ if (mdata) {
+ cmd->scsi_cmd_xfer_len = mlen;
+ bcopy(mdata, (char*)parm, mlen);
+ if (save)
+ cmd->scsi_cmd_lun_and_lba1 |= SCSI_CMD_MSL_SP;
+ } else {
+ /* parm->medium_type = if (floppy)disk.. */
+ parm->desc_len = 8;
+ /* this really is the LBN */
+ parm->descs[0].density_code = 0;/* XXX default XXX */
+ parm->descs[0].reclen1 = (lbn>>16)&0xff;
+ parm->descs[0].reclen2 = (lbn>> 8)&0xff;
+ parm->descs[0].reclen3 = (lbn )&0xff;
+ mlen = sizeof(*parm);
+ }
+
+ tgt->cur_cmd = SCSI_CMD_MODE_SELECT;
+
+ scsi_go_and_wait(tgt, sizeof(*cmd) + mlen, 0, ior);
+
+ return tgt->done;
+}
+
+/*
+ * SCSI commands fully specific to disks
+ */
+int scsi_read_capacity( tgt, lbn, ior)
+ register target_info_t *tgt;
+ int lbn;
+ io_req_t ior;
+{
+ scsi_cmd_read_capacity_t *cmd;
+
+ bzero(tgt->cmd_ptr, sizeof(*cmd));
+ cmd = (scsi_cmd_read_capacity_t*) (tgt->cmd_ptr);
+ cmd->scsi_cmd_code = SCSI_CMD_READ_CAPACITY;
+ /* all zeroes, unless... */
+ if (lbn) {
+ cmd->scsi_cmd_rcap_flags = SCSI_CMD_RCAP_PMI;
+ cmd->scsi_cmd_lba1 = (lbn>>24);
+ cmd->scsi_cmd_lba2 = (lbn>>16)&0xff;
+ cmd->scsi_cmd_lba3 = (lbn>> 8)&0xff;
+ cmd->scsi_cmd_lba4 = (lbn )&0xff;
+ }
+
+ tgt->cur_cmd = SCSI_CMD_READ_CAPACITY;
+
+ scsi_go_and_wait(tgt, sizeof(*cmd), sizeof(scsi_rcap_data_t),ior);
+
+ return tgt->done;
+}
+
+void scsi_reassign_blocks( tgt, defect_list, n_defects, ior)
+ register target_info_t *tgt;
+ unsigned int *defect_list; /* In ascending order ! */
+ int n_defects;
+ io_req_t ior;
+{
+ scsi_cmd_reassign_blocks_t *cmd;
+ scsi_Ldefect_data_t *parm;
+
+ cmd = (scsi_cmd_reassign_blocks_t*) (tgt->cmd_ptr);
+ cmd->scsi_cmd_code = SCSI_CMD_REASSIGN_BLOCKS;
+ cmd->scsi_cmd_lun_and_lba1 = 0;
+ cmd->scsi_cmd_lba2 = 0;
+ cmd->scsi_cmd_lba3 = 0;
+ cmd->scsi_cmd_xfer_len = 0;
+ cmd->scsi_cmd_ctrl_byte = 0; /* not linked */
+
+ parm = (scsi_Ldefect_data_t *) (cmd + 1);
+ parm->res1 = parm->res2 = 0;
+ n_defects *= 4; /* in 4-byte-ints */
+ parm->list_len_msb = n_defects >> 8;
+ parm->list_len_lsb = n_defects;
+ bcopy((char*)defect_list, (char*)parm->defects, n_defects);
+
+ tgt->cur_cmd = SCSI_CMD_REASSIGN_BLOCKS;
+
+ scsi_go(tgt, sizeof(*cmd) + sizeof(*parm) + (n_defects - 4), 0, FALSE);
+}
+
+void scsi_medium_removal( tgt, allow, ior)
+ register target_info_t *tgt;
+ boolean_t allow;
+ io_req_t ior;
+{
+ scsi_cmd_medium_removal_t *cmd;
+
+ cmd = (scsi_cmd_medium_removal_t*) (tgt->cmd_ptr);
+ cmd->scsi_cmd_code = SCSI_CMD_PREVENT_ALLOW_REMOVAL;
+ cmd->scsi_cmd_lun_and_lba1 = 0;
+ cmd->scsi_cmd_lba2 = 0;
+ cmd->scsi_cmd_lba3 = 0;
+ cmd->scsi_cmd_pa_prevent = allow ? 0 : 1;
+ cmd->scsi_cmd_ctrl_byte = 0; /* not linked */
+
+
+ tgt->cur_cmd = SCSI_CMD_PREVENT_ALLOW_REMOVAL;
+
+ scsi_go_and_wait(tgt, sizeof(*cmd), 0, ior);
+}
+
+int scsi_format_unit( tgt, mode, vuqe, intlv, ior)
+ register target_info_t *tgt;
+ int mode, vuqe;
+ register unsigned int intlv;
+ io_req_t ior;
+{
+ scsi_cmd_format_t *cmd;
+ char *parms;
+
+ cmd = (scsi_cmd_format_t*) (tgt->cmd_ptr);
+ cmd->scsi_cmd_code = SCSI_CMD_FORMAT_UNIT;
+ cmd->scsi_cmd_lun_and_lba1 =
+ mode & (SCSI_CMD_FMT_FMTDATA|SCSI_CMD_FMT_CMPLIST|SCSI_CMD_FMT_LIST_TYPE);
+ cmd->scsi_cmd_lba2 = vuqe;
+ cmd->scsi_cmd_lba3 = intlv >> 8;
+ cmd->scsi_cmd_xfer_len = intlv;
+ cmd->scsi_cmd_ctrl_byte = 0; /* not linked */
+
+ parms = (char*) cmd + 1;
+ if (ior->io_count)
+ bcopy(ior->io_data, parms, ior->io_count);
+ else
+ bzero(parms, 0xff - sizeof(*cmd));
+
+ tgt->cur_cmd = SCSI_CMD_FORMAT_UNIT;
+
+ scsi_go_and_wait(tgt, sizeof(*cmd) + ior->io_count, 0, ior);
+ return tgt->done;
+}
+
+
+/* Group 1 Commands */
+
+void scsi_long_read( tgt, secno, ior)
+ register target_info_t *tgt;
+ register unsigned int secno;
+ io_req_t ior;
+{
+ scsi_cmd_long_read_t *cmd;
+ register unsigned len, n_blks;
+ unsigned int max_dma_data;
+
+ max_dma_data = scsi_softc[(unsigned char)tgt->masterno]->max_dma_data;
+
+ len = ior->io_count;
+ if (len > max_dma_data)
+ len = max_dma_data;
+ if (len < tgt->block_size)
+ len = tgt->block_size;
+ n_blks = len /tgt->block_size;
+
+ cmd = (scsi_cmd_long_read_t*) (tgt->cmd_ptr);
+ cmd->scsi_cmd_code = SCSI_CMD_LONG_READ;
+ cmd->scsi_cmd_lun_and_relbit = 0;
+ cmd->scsi_cmd_lba1 = secno >> 24;
+ cmd->scsi_cmd_lba2 = secno >> 16;
+ cmd->scsi_cmd_lba3 = secno >> 8;
+ cmd->scsi_cmd_lba4 = secno;
+ cmd->scsi_cmd_xxx = 0;
+ cmd->scsi_cmd_xfer_len_1 = n_blks >> 8;
+ cmd->scsi_cmd_xfer_len_2 = n_blks;
+ cmd->scsi_cmd_ctrl_byte = 0; /* not linked */
+
+ tgt->cur_cmd = SCSI_CMD_LONG_READ;
+
+ scsi_go(tgt, sizeof(*cmd), len, FALSE);
+}
+
+void scsi_long_write( tgt, secno, ior)
+ register target_info_t *tgt;
+ register unsigned int secno;
+ io_req_t ior;
+{
+ scsi_cmd_long_write_t *cmd;
+ unsigned len; /* in bytes */
+ unsigned int max_dma_data, n_blks;
+
+ max_dma_data = scsi_softc[(unsigned char)tgt->masterno]->max_dma_data;
+
+ len = ior->io_count;
+ if (len > max_dma_data)
+ len = max_dma_data;
+ if (len < tgt->block_size)
+ len = tgt->block_size;
+ n_blks = len /tgt->block_size;
+
+ cmd = (scsi_cmd_long_write_t*) (tgt->cmd_ptr);
+ cmd->scsi_cmd_code = SCSI_CMD_LONG_WRITE;
+ cmd->scsi_cmd_lun_and_relbit = 0;
+ cmd->scsi_cmd_lba1 = secno >> 24;
+ cmd->scsi_cmd_lba2 = secno >> 16;
+ cmd->scsi_cmd_lba3 = secno >> 8;
+ cmd->scsi_cmd_lba4 = secno;
+ cmd->scsi_cmd_xxx = 0;
+ cmd->scsi_cmd_xfer_len_1 = n_blks >> 8;
+ cmd->scsi_cmd_xfer_len_2 = n_blks;
+ cmd->scsi_cmd_ctrl_byte = 0; /* not linked */
+
+ tgt->cur_cmd = SCSI_CMD_LONG_WRITE;
+
+ scsi_go(tgt, sizeof(*cmd), 0, FALSE);
+}
+
+int scdisk_verify( tgt, secno, nsectrs, ior)
+ register target_info_t *tgt;
+ int secno, nsectrs;
+ io_req_t ior;
+{
+ scsi_cmd_verify_long_t *cmd;
+ int len;
+
+ len = ior->io_count;
+
+ cmd = (scsi_cmd_verify_long_t*) (tgt->cmd_ptr);
+ cmd->scsi_cmd_code = SCSI_CMD_VERIFY_1;
+ cmd->scsi_cmd_lun_and_relbit = len ? SCSI_CMD_VFY_BYTCHK : 0;
+ cmd->scsi_cmd_lba1 = secno >> 24;
+ cmd->scsi_cmd_lba2 = secno >> 16;
+ cmd->scsi_cmd_lba3 = secno >> 8;
+ cmd->scsi_cmd_lba4 = secno;
+ cmd->scsi_cmd_xxx = 0;
+ cmd->scsi_cmd_xfer_len_1 = (nsectrs) >> 8;
+ cmd->scsi_cmd_xfer_len_2 = nsectrs;
+ cmd->scsi_cmd_ctrl_byte = 0; /* not linked */
+
+ tgt->cur_cmd = SCSI_CMD_VERIFY_1;
+
+ scsi_go_and_wait(tgt, sizeof(*cmd) + len, 0, ior);
+ return tgt->done;
+}
+
+
+int scsi_read_defect( tgt, mode, ior)
+ register target_info_t *tgt;
+ register unsigned int mode;
+ io_req_t ior;
+{
+ scsi_cmd_long_read_t *cmd;
+ register unsigned len;
+
+ len = ior->io_count;
+ if (len > 0xffff)
+ len = 0xffff;
+
+ cmd = (scsi_cmd_read_defect_t*) (tgt->cmd_ptr);
+ cmd->scsi_cmd_code = SCSI_CMD_READ_DEFECT_DATA;
+ cmd->scsi_cmd_lun_and_relbit = 0;
+ cmd->scsi_cmd_lba1 = mode & 0x1f;
+ cmd->scsi_cmd_lba2 = 0;
+ cmd->scsi_cmd_lba3 = 0;
+ cmd->scsi_cmd_lba4 = 0;
+ cmd->scsi_cmd_xxx = 0;
+ cmd->scsi_cmd_xfer_len_1 = (len) >> 8;
+ cmd->scsi_cmd_xfer_len_2 = (len);
+ cmd->scsi_cmd_ctrl_byte = 0; /* not linked */
+
+ /* ++ HACK Alert */
+/* tgt->cur_cmd = SCSI_CMD_READ_DEFECT_DATA;*/
+ tgt->cur_cmd = SCSI_CMD_LONG_READ;
+ /* -- HACK Alert */
+
+ scsi_go(tgt, sizeof(*cmd), len, FALSE);
+ iowait(ior);
+ return tgt->done;
+}
+
+
+#if 0 /* unused commands */
+scsi_rezero_unit( tgt, ior)
+ register target_info_t *tgt;
+ io_req_t ior;
+{
+ scsi_cmd_rezero_t *cmd;
+
+ cmd = (scsi_cmd_rezero_t*) (tgt->cmd_ptr);
+ cmd->scsi_cmd_code = SCSI_CMD_REZERO_UNIT;
+ cmd->scsi_cmd_lun_and_lba1 = 0;
+ cmd->scsi_cmd_lba2 = 0;
+ cmd->scsi_cmd_lba3 = 0;
+ cmd->scsi_cmd_xfer_len = 0;
+ cmd->scsi_cmd_ctrl_byte = 0; /* not linked */
+
+
+ tgt->cur_cmd = SCSI_CMD_REZERO_UNIT;
+
+ scsi_go_and_wait(tgt, sizeof(*cmd), 0, ior);
+
+}
+
+scsi_seek( tgt, where, ior)
+ register target_info_t *tgt;
+ register unsigned int where;
+ io_req_t ior;
+{
+ scsi_cmd_seek_t *cmd;
+
+ cmd = (scsi_cmd_seek_t*) (tgt->cmd_ptr);
+ cmd->scsi_cmd_code = SCSI_CMD_SEEK;
+ cmd->scsi_cmd_lun_and_lba1 = (where >> 16) & 0x1f;
+ cmd->scsi_cmd_lba2 = where >> 8;
+ cmd->scsi_cmd_lba3 = where;
+ cmd->scsi_cmd_xfer_len = 0;
+ cmd->scsi_cmd_ctrl_byte = 0; /* not linked */
+
+
+ tgt->cur_cmd = SCSI_CMD_SEEK;
+
+ scsi_go_and_wait(tgt, sizeof(*cmd), 0, ior);
+
+}
+
+scsi_reserve( tgt, len, id, mode, ior)
+ register target_info_t *tgt;
+ register unsigned int len;
+ unsigned char id;
+ io_req_t ior;
+{
+ scsi_cmd_reserve_t *cmd;
+
+ cmd = (scsi_cmd_reserve_t*) (tgt->cmd_ptr);
+ cmd->scsi_cmd_code = SCSI_CMD_RESERVE;
+ cmd->scsi_cmd_lun_and_lba1 = mode & 0x1f;
+ cmd->scsi_cmd_reserve_id = id;
+ cmd->scsi_cmd_extent_llen1 = len >> 8;
+ cmd->scsi_cmd_extent_llen2 = len;
+ cmd->scsi_cmd_ctrl_byte = 0; /* not linked */
+
+
+ tgt->cur_cmd = SCSI_CMD_RESERVE;
+
+ scsi_go_and_wait(tgt, sizeof(*cmd), 0, ior);
+
+}
+
+scsi_release( tgt, id, mode, ior)
+ register target_info_t *tgt;
+ unsigned char id, mode;
+ io_req_t ior;
+{
+ scsi_cmd_release_t *cmd;
+
+ cmd = (scsi_cmd_release_t*) (tgt->cmd_ptr);
+ cmd->scsi_cmd_code = SCSI_CMD_RELEASE;
+ cmd->scsi_cmd_lun_and_lba1 = mode & 0x1f;
+ cmd->scsi_cmd_reserve_id = id;
+ cmd->scsi_cmd_lba3 = 0;
+ cmd->scsi_cmd_xfer_len = 0;
+ cmd->scsi_cmd_ctrl_byte = 0; /* not linked */
+
+
+ tgt->cur_cmd = SCSI_CMD_RELEASE;
+
+ scsi_go_and_wait(tgt, sizeof(*cmd), 0, ior);
+
+}
+
+
+/* Group 1 Commands */
+
+scsi_long_seek( tgt, secno, ior)
+ register target_info_t *tgt;
+ io_req_t ior;
+{
+ scsi_cmd_long_seek_t *cmd;
+
+ cmd = (scsi_cmd_long_seek_t*) (tgt->cmd_ptr);
+ cmd->scsi_cmd_code = SCSI_CMD_LONG_SEEK;
+ cmd->scsi_cmd_lun_and_relbit = 0;
+ cmd->scsi_cmd_lba1 = secno >> 24;
+ cmd->scsi_cmd_lba2 = secno >> 16;
+ cmd->scsi_cmd_lba3 = secno >> 8;
+ cmd->scsi_cmd_lba4 = secno;
+ cmd->scsi_cmd_xxx = 0;
+ cmd->scsi_cmd_xfer_len_1 = 0;
+ cmd->scsi_cmd_xfer_len_2 = 0;
+ cmd->scsi_cmd_ctrl_byte = 0; /* not linked */
+
+ tgt->cur_cmd = SCSI_CMD_LONG_SEEK;
+
+ scsi_go(tgt, sizeof(*cmd), 0, FALSE);
+}
+
+scsi_write_verify( tgt, secno, ior)
+ register target_info_t *tgt;
+ io_req_t ior;
+{
+ scsi_cmd_write_vfy_t *cmd;
+ unsigned len; /* in bytes */
+ unsigned int max_dma_data, n_blks;
+
+ max_dma_data = scsi_softc[(unsigned char)tgt->masterno]->max_dma_data;
+
+ len = ior->io_count;
+ if (len > max_dma_data)
+ len = max_dma_data;
+ if (len < tgt->block_size)
+ len = tgt->block_size;
+ n_blks = len / tgt->block_size;
+
+ cmd = (scsi_cmd_write_vfy_t*) (tgt->cmd_ptr);
+ cmd->scsi_cmd_code = SCSI_CMD_WRITE_AND_VERIFY;
+ cmd->scsi_cmd_lun_and_relbit = SCSI_CMD_VFY_BYTCHK;
+ cmd->scsi_cmd_lba1 = secno >> 24;
+ cmd->scsi_cmd_lba2 = secno >> 16;
+ cmd->scsi_cmd_lba3 = secno >> 8;
+ cmd->scsi_cmd_lba4 = secno;
+ cmd->scsi_cmd_xxx = 0;
+ cmd->scsi_cmd_xfer_len_1 = n_blks >> 8;
+ cmd->scsi_cmd_xfer_len_2 = n_blks;
+ cmd->scsi_cmd_ctrl_byte = 0; /* not linked */
+
+ tgt->cur_cmd = SCSI_CMD_WRITE_AND_VERIFY;
+
+ scsi_go(tgt, sizeof(*cmd), 0, FALSE);
+}
+
+scsi_search_data( tgt, secno, how, flags, ior)
+ register target_info_t *tgt;
+ io_req_t ior;
+{
+ scsi_cmd_search_t *cmd;
+ unsigned len; /* in bytes */
+ unsigned int max_dma_data, n_blks;
+
+ max_dma_data = scsi_softc[(unsigned char)tgt->masterno]->max_dma_data;
+
+ if (how != SCSI_CMD_SEARCH_HIGH &&
+ how != SCSI_CMD_SEARCH_EQUAL &&
+ how != SCSI_CMD_SEARCH_LOW)
+ panic("scsi_search_data");
+
+ len = ior->io_count;
+ if (len > max_dma_data)
+ len = max_dma_data;
+ n_blks = len / tgt->block_size;
+
+ cmd = (scsi_cmd_search_t*) (tgt->cmd_ptr);
+ cmd->scsi_cmd_code = how;
+ cmd->scsi_cmd_lun_and_relbit = flags & 0x1e;
+ cmd->scsi_cmd_lba1 = secno >> 24;
+ cmd->scsi_cmd_lba2 = secno >> 16;
+ cmd->scsi_cmd_lba3 = secno >> 8;
+ cmd->scsi_cmd_lba4 = secno;
+ cmd->scsi_cmd_xxx = 0;
+ cmd->scsi_cmd_xfer_len_1 = n_blks >> 8;
+ cmd->scsi_cmd_xfer_len_2 = n_blks;
+ cmd->scsi_cmd_ctrl_byte = 0; /* not linked */
+
+ tgt->cur_cmd = how;
+
+ scsi_go(tgt, sizeof(*cmd), 0, FALSE);
+}
+
+
+scsi_set_limits( tgt, secno, nblocks, inhibit, ior)
+ register target_info_t *tgt;
+ io_req_t ior;
+{
+ scsi_cmd_set_limits_t *cmd;
+
+ cmd = (scsi_cmd_set_limits_t*) (tgt->cmd_ptr);
+ cmd->scsi_cmd_code = SCSI_CMD_SET_LIMITS;
+ cmd->scsi_cmd_lun_and_relbit = inhibit & 0x3;
+ cmd->scsi_cmd_lba1 = secno >> 24;
+ cmd->scsi_cmd_lba2 = secno >> 16;
+ cmd->scsi_cmd_lba3 = secno >> 8;
+ cmd->scsi_cmd_lba4 = secno;
+ cmd->scsi_cmd_xxx = 0;
+ cmd->scsi_cmd_xfer_len_1 = nblocks >> 8;
+ cmd->scsi_cmd_xfer_len_2 = nblocks;
+ cmd->scsi_cmd_ctrl_byte = 0; /* not linked */
+
+ tgt->cur_cmd = SCSI_CMD_SET_LIMITS;
+
+ scsi_go(tgt, sizeof(*cmd), 0, FALSE);
+}
+
+
+#endif
+
+#ifdef SCSI2
+scsi_lock_cache
+scsi_prefetch
+scsi_read_defect_data
+scsi_sync_cache
+scsi_write_same
+#endif SCSI2
+#endif /* NSCSI > 0 */
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-05 00:39:11 +0000