grml...

[seabios.git] / src / blockcmd.c

diff --git a/src/blockcmd.c b/src/blockcmd.c
index f5e2ce3f70518ba85bd504e2bb23486bd9056fdd..3476cfc364f097ab8f4256fee4281a990e656b01 100644 (file)
--- a/src/blockcmd.c
+++ b/src/blockcmd.c
@@ -31,6 +31,128 @@ cdb_cmd_data(struct disk_op_s *op, void *cdbcmd, u16 blocksize)
     }
 }
 
+int
+scsi_is_ready(struct disk_op_s *op)
+{
+    dprintf(6, "scsi_is_ready (drive=%p)\n", op->drive_g);
+
+    /* Retry TEST UNIT READY for 5 seconds unless MEDIUM NOT PRESENT is
+     * reported by the device.  If the device reports "IN PROGRESS",
+     * 30 seconds is added. */
+    int in_progress = 0;
+    u64 end = calc_future_tsc(5000);
+    for (;;) {
+        if (check_tsc(end)) {
+            dprintf(1, "test unit ready failed\n");
+            return -1;
+        }
+
+        int ret = cdb_test_unit_ready(op);
+        if (!ret)
+            // Success
+            break;
+
+        struct cdbres_request_sense sense;
+        ret = cdb_get_sense(op, &sense);
+        if (ret)
+            // Error - retry.
+            continue;
+
+        // Sense succeeded.
+        if (sense.asc == 0x3a) { /* MEDIUM NOT PRESENT */
+            dprintf(1, "Device reports MEDIUM NOT PRESENT\n");
+            return -1;
+        }
+
+        if (sense.asc == 0x04 && sense.ascq == 0x01 && !in_progress) {
+            /* IN PROGRESS OF BECOMING READY */
+            printf("Waiting for device to detect medium... ");
+            /* Allow 30 seconds more */
+            end = calc_future_tsc(30000);
+            in_progress = 1;
+        }
+    }
+    return 0;
+}
+
+// Validate drive and find block size and sector count.
+int
+scsi_init_drive(struct drive_s *drive, const char *s, int *pdt, char **desc)
+{
+    if (!CONFIG_USB_MSC)
+        return 0;
+
+    struct disk_op_s dop;
+    memset(&dop, 0, sizeof(dop));
+    dop.drive_g = drive;
+    struct cdbres_inquiry data;
+    int ret = cdb_get_inquiry(&dop, &data);
+    if (ret)
+        return ret;
+    char vendor[sizeof(data.vendor)+1], product[sizeof(data.product)+1];
+    char rev[sizeof(data.rev)+1];
+    strtcpy(vendor, data.vendor, sizeof(vendor));
+    nullTrailingSpace(vendor);
+    strtcpy(product, data.product, sizeof(product));
+    nullTrailingSpace(product);
+    strtcpy(rev, data.rev, sizeof(rev));
+    nullTrailingSpace(rev);
+    *pdt = data.pdt & 0x1f;
+    int removable = !!(data.removable & 0x80);
+    dprintf(1, "%s vendor='%s' product='%s' rev='%s' type=%d removable=%d\n"
+            , s, vendor, product, rev, *pdt, removable);
+    drive->removable = removable;
+
+    if (*pdt == SCSI_TYPE_CDROM) {
+        drive->blksize = CDROM_SECTOR_SIZE;
+        drive->sectors = (u64)-1;
+
+        *desc = znprintf(MAXDESCSIZE, "DVD/CD [%s Drive %s %s %s]"
+                              , s, vendor, product, rev);
+        return 0;
+    }
+
+    ret = scsi_is_ready(&dop);
+    if (ret) {
+        dprintf(1, "scsi_is_ready returned %d\n", ret);
+        return ret;
+    }
+
+    struct cdbres_read_capacity capdata;
+    ret = cdb_read_capacity(&dop, &capdata);
+    if (ret)
+        return ret;
+
+    // READ CAPACITY returns the address of the last block.
+    // We do not bother with READ CAPACITY(16) because BIOS does not support
+    // 64-bit LBA anyway.
+    drive->blksize = ntohl(capdata.blksize);
+    drive->sectors = (u64)ntohl(capdata.sectors) + 1;
+    dprintf(1, "%s blksize=%d sectors=%d\n"
+            , s, drive->blksize, (unsigned)drive->sectors);
+
+    struct cdbres_mode_sense_geom geomdata;
+    ret = cdb_mode_sense_geom(&dop, &geomdata);
+    if (ret == 0) {
+        u32 cylinders;
+        cylinders = geomdata.cyl[0] << 16;
+        cylinders |= geomdata.cyl[1] << 8;
+        cylinders |= geomdata.cyl[2];
+        if (cylinders && geomdata.heads &&
+            drive->sectors <= 0xFFFFFFFFULL &&
+            ((u32)drive->sectors % (geomdata.heads * cylinders) == 0)) {
+            drive->pchs.cylinders = cylinders;
+            drive->pchs.heads = geomdata.heads;
+            drive->pchs.spt = (u32)drive->sectors
+     / (geomdata.heads * cylinders);
+        }
+    }
+
+    *desc = znprintf(MAXDESCSIZE, "%s Drive %s %s %s"
+                      , s, vendor, product, rev);
+    return 0;
+}
+
 int
 cdb_get_inquiry(struct disk_op_s *op, struct cdbres_inquiry *data)
 {
@@ -80,6 +202,21 @@ cdb_read_capacity(struct disk_op_s *op, struct cdbres_read_capacity *data)
     return cdb_cmd_data(op, &cmd, sizeof(*data));
 }
 
+// Mode sense, geometry page.
+int
+cdb_mode_sense_geom(struct disk_op_s *op, struct cdbres_mode_sense_geom *data)
+{
+    struct cdb_mode_sense cmd;
+    memset(&cmd, 0, sizeof(cmd));
+    cmd.command = CDB_CMD_MODE_SENSE;
+    cmd.flags = 8; /* DBD */
+    cmd.page = MODE_PAGE_HD_GEOMETRY;
+    cmd.count = htons(sizeof(*data));
+    op->count = 1;
+    op->buf_fl = data;
+    return cdb_cmd_data(op, &cmd, sizeof(*data));
+}
+
 // Read sectors.
 int
 cdb_read(struct disk_op_s *op)