Initial source

1 files changed, 196 insertions, 0 deletions

diff --git a/scsi/pc_scsi_label.c b/scsi/pc_scsi_label.c
new file mode 100644
index 00000000..9bbcbbf2
--- /dev/null
+++ b/scsi/pc_scsi_label.c
@@ -0,0 +1,196 @@
+/* 
+ * Mach Operating System
+ * Copyright (c) 1993,1991,1990,1989 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.
+ */
+/* This goes away as soon as we move it in the Ux server */
+
+
+
+#include <mach/std_types.h>
+#include <scsi/compat_30.h>
+#include <scsi/scsi.h>
+#include <scsi/scsi_defs.h>
+#include <scsi/rz.h>
+#include <scsi/rz_labels.h>
+#include <sys/types.h>
+#include <sys/ioctl.h>
+
+#if (NSCSI > 0)
+#define LABEL_DEBUG(x,y) if (label_flag&x) y
+
+#include <i386at/disk.h>
+#include <device/device_types.h>
+#include <device/disk_status.h>
+
+
+int scsi_abs_sec = -1;
+int scsi_abs_count = -1;
+
+scsi_rw_abs(dev, data, rw, sec, count)
+	dev_t		dev;
+{
+	io_req_t	ior;
+	io_return_t	error;
+
+	io_req_alloc(ior,0);
+	ior->io_next = 0;
+	ior->io_unit = dev & (~(MAXPARTITIONS-1));	/* sort of */
+	ior->io_unit |= PARTITION_ABSOLUTE;
+	ior->io_data = (io_buf_ptr_t)data;
+	ior->io_count = count;
+	ior->io_recnum = sec;
+	ior->io_error = 0;
+	if (rw == IO_READ)
+		ior->io_op = IO_READ;
+	else
+		ior->io_op = IO_WRITE;
+	scdisk_strategy(ior);
+	iowait(ior);
+	error = ior->io_error;
+	io_req_free(ior);
+	return(error);
+}
+
+io_return_t
+scsi_i386_get_status(dev, tgt, flavor, status, status_count)
+int		dev;
+target_info_t	*tgt;
+int		flavor;
+dev_status_t	status;
+unsigned int	*status_count;
+{
+
+	switch (flavor) {
+	case V_GETPARMS: {
+		struct disklabel *lp = &tgt->dev_info.disk.l;
+		struct disk_parms *dp = (struct disk_parms *)status;
+		extern struct disklabel default_label;
+		int part = rzpartition(dev);
+
+		if (*status_count < sizeof (struct disk_parms)/sizeof(int))
+			return (D_INVALID_OPERATION);
+		dp->dp_type = DPT_WINI; 
+		dp->dp_secsiz = lp->d_secsize;
+		if (lp->d_nsectors == default_label.d_nsectors &&
+		    lp->d_ntracks == default_label.d_ntracks &&
+		    lp->d_ncylinders == default_label.d_ncylinders) {
+		    	/* I guess there is nothing there */
+			/* Well, then, Adaptec's like ... */
+			dp->dp_sectors = 32;
+			dp->dp_heads = 64;
+			dp->dp_cyls = lp->d_secperunit / 64 / 32 ;
+		} else {
+			dp->dp_sectors = lp->d_nsectors;
+			dp->dp_heads = lp->d_ntracks;
+			dp->dp_cyls = lp->d_ncylinders;
+		}
+
+		dp->dp_dossectors = 32;
+		dp->dp_dosheads = 64;
+		dp->dp_doscyls = lp->d_secperunit / 64 / 32;
+		dp->dp_ptag = 0;
+		dp->dp_pflag = 0;
+/* !!! partition changes */
+printf("USING PARTIOION TABLE\n");
+		dp->dp_pstartsec = lp->d_partitions[part].p_offset;
+		dp->dp_pnumsec = lp->d_partitions[part].p_size;
+		*status_count = sizeof(struct disk_parms)/sizeof(int);
+		break;
+	}
+	case V_RDABS:
+		if (*status_count < DEV_BSIZE/sizeof (int)) {
+			printf("RDABS bad size %x", *status_count);
+			return (D_INVALID_OPERATION);
+		}
+		if (scsi_rw_abs(dev, status, IO_READ, scsi_abs_sec, DEV_BSIZE) != D_SUCCESS)
+			return(D_INVALID_OPERATION);
+		*status_count = DEV_BSIZE/sizeof(int);
+		break;
+	case V_VERIFY: {
+		int count = scsi_abs_count * DEV_BSIZE;
+		int sec = scsi_abs_sec;
+		char *scsi_verify_buf;
+#include "vm/vm_kern.h"
+
+		(void) kmem_alloc(kernel_map, &scsi_verify_buf, PAGE_SIZE);
+
+		*status = 0;
+		while (count > 0) {
+			int xcount = (count < PAGE_SIZE) ? count : PAGE_SIZE;
+			if (scsi_rw_abs(dev, scsi_verify_buf, IO_READ, sec, xcount) != D_SUCCESS) {
+				*status = BAD_BLK;
+				break;
+			} else {
+				count -= xcount;
+				sec += xcount / DEV_BSIZE;
+			}
+	        }
+		(void) kmem_free(kernel_map, scsi_verify_buf, PAGE_SIZE);
+		*status_count = 1;
+		break;
+	}
+	default:
+		return(D_INVALID_OPERATION);
+	}
+	return D_SUCCESS;
+}
+
+io_return_t
+scsi_i386_set_status(dev, tgt, flavor, status, status_count)
+int		dev;
+target_info_t	*tgt;
+int		flavor;
+int 		*status;
+unsigned int	status_count;
+{
+	io_req_t	ior;
+
+	switch (flavor) {
+	case V_SETPARMS:
+		printf("scsdisk_set_status: invalid flavor V_SETPARMS\n");
+		return(D_INVALID_OPERATION);
+		break;
+	case V_REMOUNT:
+		tgt->flags &= ~TGT_ONLINE;
+		break;
+	case V_ABS:
+		scsi_abs_sec = status[0];
+		if (status_count == 2)
+			scsi_abs_count = status[1];
+		break;
+	case V_WRABS:
+		if (status_count < DEV_BSIZE/sizeof (int)) {
+			printf("RDABS bad size %x", status_count);
+			return (D_INVALID_OPERATION);
+		}
+		if (scsi_rw_abs(dev, status, IO_WRITE, scsi_abs_sec, DEV_BSIZE) != D_SUCCESS)
+			return(D_INVALID_OPERATION);
+		break;
+	default:
+		return(D_INVALID_OPERATION);
+	}
+	return D_SUCCESS;
+}
+#endif  /* NSCSI > 0 */
+