#include "disk.h" // struct disk_op_s
#include "blockcmd.h" // struct cdb_request_sense
#include "ata.h" // atapi_cmd_data
+#include "ahci.h" // atapi_cmd_data
+#include "usb-msc.h" // usb_cmd_data
+// Route command to low-level handler.
static int
cdb_cmd_data(struct disk_op_s *op, void *cdbcmd, u16 blocksize)
{
switch (type) {
case DTYPE_ATAPI:
return atapi_cmd_data(op, cdbcmd, blocksize);
+ case DTYPE_USB:
+ return usb_cmd_data(op, cdbcmd, blocksize);
+ case DTYPE_AHCI:
+ return ahci_cmd_data(op, cdbcmd, blocksize);
default:
op->count = 0;
return DISK_RET_EPARAM;
}
}
+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)
+{
+ struct cdb_request_sense cmd;
+ memset(&cmd, 0, sizeof(cmd));
+ cmd.command = CDB_CMD_INQUIRY;
+ cmd.length = sizeof(*data);
+ op->count = 1;
+ op->buf_fl = data;
+ return cdb_cmd_data(op, &cmd, sizeof(*data));
+}
+
// Request SENSE
int
cdb_get_sense(struct disk_op_s *op, struct cdbres_request_sense *data)
return cdb_cmd_data(op, &cmd, sizeof(*data));
}
+// Test unit ready
+int
+cdb_test_unit_ready(struct disk_op_s *op)
+{
+ struct cdb_request_sense cmd;
+ memset(&cmd, 0, sizeof(cmd));
+ cmd.command = CDB_CMD_TEST_UNIT_READY;
+ op->count = 0;
+ op->buf_fl = NULL;
+ return cdb_cmd_data(op, &cmd, 0);
+}
+
// Request capacity
int
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)
cmd.command = CDB_CMD_READ_10;
cmd.lba = htonl(op->lba);
cmd.count = htons(op->count);
- return cdb_cmd_data(op, &cmd, CDROM_SECTOR_SIZE);
+ return cdb_cmd_data(op, &cmd, GET_GLOBAL(op->drive_g->blksize));
+}
+
+// Write sectors.
+int
+cdb_write(struct disk_op_s *op)
+{
+ struct cdb_rwdata_10 cmd;
+ memset(&cmd, 0, sizeof(cmd));
+ cmd.command = CDB_CMD_WRITE_10;
+ cmd.lba = htonl(op->lba);
+ cmd.count = htons(op->count);
+ return cdb_cmd_data(op, &cmd, GET_GLOBAL(op->drive_g->blksize));
}
projects / seabios.git / blobdiff