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-rw-r--r--hw/scsi-bus.c95
-rw-r--r--hw/scsi.h17
2 files changed, 58 insertions, 54 deletions
diff --git a/hw/scsi-bus.c b/hw/scsi-bus.c
index 7b5a9ce..b52b9d2 100644
--- a/hw/scsi-bus.c
+++ b/hw/scsi-bus.c
@@ -217,35 +217,35 @@ static void scsi_req_dequeue(SCSIRequest *req)
}
}
-static int scsi_req_length(SCSIRequest *req, uint8_t *cmd)
+static int scsi_req_length(SCSICommand *cmd, SCSIDevice *dev, uint8_t *buf)
{
- switch (cmd[0] >> 5) {
+ switch (buf[0] >> 5) {
case 0:
- req->cmd.xfer = cmd[4];
- req->cmd.len = 6;
+ cmd->xfer = buf[4];
+ cmd->len = 6;
/* length 0 means 256 blocks */
- if (req->cmd.xfer == 0)
- req->cmd.xfer = 256;
+ if (cmd->xfer == 0) {
+ cmd->xfer = 256;
+ }
break;
case 1:
case 2:
- req->cmd.xfer = cmd[8] | (cmd[7] << 8);
- req->cmd.len = 10;
+ cmd->xfer = buf[8] | (buf[7] << 8);
+ cmd->len = 10;
break;
case 4:
- req->cmd.xfer = cmd[13] | (cmd[12] << 8) | (cmd[11] << 16) | (cmd[10] << 24);
- req->cmd.len = 16;
+ cmd->xfer = buf[13] | (buf[12] << 8) | (buf[11] << 16) | (buf[10] << 24);
+ cmd->len = 16;
break;
case 5:
- req->cmd.xfer = cmd[9] | (cmd[8] << 8) | (cmd[7] << 16) | (cmd[6] << 24);
- req->cmd.len = 12;
+ cmd->xfer = buf[9] | (buf[8] << 8) | (buf[7] << 16) | (buf[6] << 24);
+ cmd->len = 12;
break;
default:
- trace_scsi_req_parse_bad(req->dev->id, req->lun, req->tag, cmd[0]);
return -1;
}
- switch(cmd[0]) {
+ switch (buf[0]) {
case TEST_UNIT_READY:
case REWIND:
case START_STOP:
@@ -266,27 +266,27 @@ static int scsi_req_length(SCSIRequest *req, uint8_t *cmd)
case WRITE_LONG_10:
case MOVE_MEDIUM:
case UPDATE_BLOCK:
- req->cmd.xfer = 0;
+ cmd->xfer = 0;
break;
case MODE_SENSE:
break;
case WRITE_SAME_10:
- req->cmd.xfer = 1;
+ cmd->xfer = 1;
break;
case READ_CAPACITY_10:
- req->cmd.xfer = 8;
+ cmd->xfer = 8;
break;
case READ_BLOCK_LIMITS:
- req->cmd.xfer = 6;
+ cmd->xfer = 6;
break;
case READ_POSITION:
- req->cmd.xfer = 20;
+ cmd->xfer = 20;
break;
case SEND_VOLUME_TAG:
- req->cmd.xfer *= 40;
+ cmd->xfer *= 40;
break;
case MEDIUM_SCAN:
- req->cmd.xfer *= 8;
+ cmd->xfer *= 8;
break;
case WRITE_10:
case WRITE_VERIFY_10:
@@ -295,7 +295,7 @@ static int scsi_req_length(SCSIRequest *req, uint8_t *cmd)
case WRITE_VERIFY_12:
case WRITE_16:
case WRITE_VERIFY_16:
- req->cmd.xfer *= req->dev->blocksize;
+ cmd->xfer *= dev->blocksize;
break;
case READ_10:
case READ_6:
@@ -303,50 +303,51 @@ static int scsi_req_length(SCSIRequest *req, uint8_t *cmd)
case RECOVER_BUFFERED_DATA:
case READ_12:
case READ_16:
- req->cmd.xfer *= req->dev->blocksize;
+ cmd->xfer *= dev->blocksize;
break;
case INQUIRY:
- req->cmd.xfer = cmd[4] | (cmd[3] << 8);
+ cmd->xfer = buf[4] | (buf[3] << 8);
break;
case MAINTENANCE_OUT:
case MAINTENANCE_IN:
- if (req->dev->type == TYPE_ROM) {
+ if (dev->type == TYPE_ROM) {
/* GPCMD_REPORT_KEY and GPCMD_SEND_KEY from multi media commands */
- req->cmd.xfer = cmd[9] | (cmd[8] << 8);
+ cmd->xfer = buf[9] | (buf[8] << 8);
}
break;
}
return 0;
}
-static int scsi_req_stream_length(SCSIRequest *req, uint8_t *cmd)
+static int scsi_req_stream_length(SCSICommand *cmd, SCSIDevice *dev, uint8_t *buf)
{
- switch(cmd[0]) {
+ switch (buf[0]) {
/* stream commands */
case READ_6:
case READ_REVERSE:
case RECOVER_BUFFERED_DATA:
case WRITE_6:
- req->cmd.len = 6;
- req->cmd.xfer = cmd[4] | (cmd[3] << 8) | (cmd[2] << 16);
- if (cmd[1] & 0x01) /* fixed */
- req->cmd.xfer *= req->dev->blocksize;
+ cmd->len = 6;
+ cmd->xfer = buf[4] | (buf[3] << 8) | (buf[2] << 16);
+ if (buf[1] & 0x01) { /* fixed */
+ cmd->xfer *= dev->blocksize;
+ }
break;
case REWIND:
case START_STOP:
- req->cmd.len = 6;
- req->cmd.xfer = 0;
+ cmd->len = 6;
+ cmd->xfer = 0;
break;
/* generic commands */
default:
- return scsi_req_length(req, cmd);
+ return scsi_req_length(cmd, dev, buf);
}
return 0;
}
-static void scsi_req_xfer_mode(SCSIRequest *req)
+static void scsi_cmd_xfer_mode(SCSICommand *cmd)
{
- switch (req->cmd.buf[0]) {
+ switch (cmd->buf[0]) {
case WRITE_6:
case WRITE_10:
case WRITE_VERIFY_10:
@@ -378,21 +379,21 @@ static void scsi_req_xfer_mode(SCSIRequest *req)
case SEND_VOLUME_TAG:
case PERSISTENT_RESERVE_OUT:
case MAINTENANCE_OUT:
- req->cmd.mode = SCSI_XFER_TO_DEV;
+ cmd->mode = SCSI_XFER_TO_DEV;
break;
default:
- if (req->cmd.xfer)
- req->cmd.mode = SCSI_XFER_FROM_DEV;
+ if (cmd->xfer)
+ cmd->mode = SCSI_XFER_FROM_DEV;
else {
- req->cmd.mode = SCSI_XFER_NONE;
+ cmd->mode = SCSI_XFER_NONE;
}
break;
}
}
-static uint64_t scsi_req_lba(SCSIRequest *req)
+static uint64_t scsi_cmd_lba(SCSICommand *cmd)
{
- uint8_t *buf = req->cmd.buf;
+ uint8_t *buf = cmd->buf;
uint64_t lba;
switch (buf[0] >> 5) {
@@ -427,16 +428,16 @@ int scsi_req_parse(SCSIRequest *req, uint8_t *buf)
int rc;
if (req->dev->type == TYPE_TAPE) {
- rc = scsi_req_stream_length(req, buf);
+ rc = scsi_req_stream_length(&req->cmd, req->dev, buf);
} else {
- rc = scsi_req_length(req, buf);
+ rc = scsi_req_length(&req->cmd, req->dev, buf);
}
if (rc != 0)
return rc;
assert(buf == req->cmd.buf);
- scsi_req_xfer_mode(req);
- req->cmd.lba = scsi_req_lba(req);
+ scsi_cmd_xfer_mode(&req->cmd);
+ req->cmd.lba = scsi_cmd_lba(&req->cmd);
trace_scsi_req_parsed(req->dev->id, req->lun, req->tag, buf[0],
req->cmd.mode, req->cmd.xfer);
if (req->cmd.lba != -1) {
diff --git a/hw/scsi.h b/hw/scsi.h
index 7ed7550..f29d65f 100644
--- a/hw/scsi.h
+++ b/hw/scsi.h
@@ -11,6 +11,7 @@
typedef struct SCSIBus SCSIBus;
typedef struct SCSIBusOps SCSIBusOps;
+typedef struct SCSICommand SCSICommand;
typedef struct SCSIDevice SCSIDevice;
typedef struct SCSIDeviceInfo SCSIDeviceInfo;
typedef struct SCSIRequest SCSIRequest;
@@ -30,6 +31,14 @@ typedef struct SCSISense {
#define SCSI_SENSE_BUF_SIZE 96
+struct SCSICommand {
+ uint8_t buf[SCSI_CMD_BUF_SIZE];
+ int len;
+ size_t xfer;
+ uint64_t lba;
+ enum SCSIXferMode mode;
+};
+
struct SCSIRequest {
SCSIBus *bus;
SCSIDevice *dev;
@@ -38,13 +47,7 @@ struct SCSIRequest {
uint32_t tag;
uint32_t lun;
uint32_t status;
- struct {
- uint8_t buf[SCSI_CMD_BUF_SIZE];
- int len;
- size_t xfer;
- uint64_t lba;
- enum SCSIXferMode mode;
- } cmd;
+ SCSICommand cmd;
BlockDriverAIOCB *aiocb;
uint8_t sense[SCSI_SENSE_BUF_SIZE];
uint32_t sense_len;
generated by cgit v1.1 at 2024-12-25 18:22:55 +0000