Changeset 00c2de63 in mainline for uspace/drv/bus/usb/usbmast/bo_trans.c

Timestamp:

2011-07-29T14:50:22Z (13 years ago)

Author:

Jiří Zárevúcky <zarevucky.jiri@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

b6759f4

Parents:

6c69d19 (diff), 7ae249d (diff)
Note: this is a merge changeset, the changes displayed below correspond to the merge itself.
Use the (diff) links above to see all the changes relative to each parent.

Message:

Merge libposix.

File:

• uspace/drv/bus/usb/usbmast/bo_trans.c (modified) (7 diffs)

uspace/drv/bus/usb/usbmast/bo_trans.c

@@ -58 +58 @@
  * @param tag           Command block wrapper tag (automatically compared
  *                      with answer)
- * @param cmd           Command block
- * @param cmd_size      Command block size in bytes
- * @param ddir          Direction in which data will be transferred
- * @param dbuf          Data send/receive buffer
- * @param dbuf_size     Size of the data buffer
- * @param xferred_size  Number of bytes actually transferred
+ * @param cmd           SCSI command
  *
  * @return              Error code
  */
-static int usb_massstor_cmd(usbmast_fun_t *mfun, uint32_t tag, const void *cmd,
-    size_t cmd_size, usb_direction_t ddir, void *dbuf, size_t dbuf_size,
-    size_t *xferred_size)
+int usb_massstor_cmd(usbmast_fun_t *mfun, uint32_t tag, scsi_cmd_t *cmd)
 {
         int rc;
+        int retval = EOK;
         size_t act_size;
         usb_pipe_t *bulk_in_pipe = mfun->mdev->usb_dev->pipes[BULK_IN_EP].pipe;
         usb_pipe_t *bulk_out_pipe = mfun->mdev->usb_dev->pipes[BULK_OUT_EP].pipe;
+        usb_direction_t ddir;
+        void *dbuf;
+        size_t dbuf_size;
+
+        if (cmd->data_out != NULL && cmd->data_in == NULL) {
+                ddir = USB_DIRECTION_OUT;
+                dbuf = (void *)cmd->data_out;
+                dbuf_size = cmd->data_out_size;
+        } else if (cmd->data_out == NULL && cmd->data_in != NULL) {
+                ddir = USB_DIRECTION_IN;
+                dbuf = cmd->data_in;
+                dbuf_size = cmd->data_in_size;
+        } else {
+                assert(false);
+        }
 
         /* Prepare CBW - command block wrapper */
         usb_massstor_cbw_t cbw;
         usb_massstor_cbw_prepare(&cbw, tag, dbuf_size, ddir, mfun->lun,
-            cmd_size, cmd);
+            cmd->cdb_size, cmd->cdb);
 
         /* Send the CBW. */
+        MASTLOG("Sending CBW.\n");
         rc = usb_pipe_write(bulk_out_pipe, &cbw, sizeof(cbw));
         MASTLOG("CBW '%s' sent: %s.\n",
             usb_debug_str_buffer((uint8_t *) &cbw, sizeof(cbw), 0),
             str_error(rc));
-        if (rc != EOK) {
-                return rc;
-        }
-
+        if (rc != EOK)
+                return EIO;
+
+        MASTLOG("Transferring data.\n");
         if (ddir == USB_DIRECTION_IN) {
                 /* Recieve data from the device. */
@@ -104 +114 @@
         }
 
-        if (rc != EOK) {
-                /*
-                 * XXX If the pipe is stalled, we should clear it
-                 * and read CSW.
-                 */
-                return rc;
+        if (rc == ESTALL) {
+                /* Clear stall condition and continue below to read CSW. */
+                if (ddir == USB_DIRECTION_IN) {
+                        usb_pipe_clear_halt(&mfun->mdev->usb_dev->ctrl_pipe,
+                            mfun->mdev->usb_dev->pipes[BULK_IN_EP].pipe);
+                } else {
+                        usb_pipe_clear_halt(&mfun->mdev->usb_dev->ctrl_pipe,
+                            mfun->mdev->usb_dev->pipes[BULK_OUT_EP].pipe);
+                }
+        } else if (rc != EOK) {
+                return EIO;
         }
 
@@ -115 +130 @@
         usb_massstor_csw_t csw;
         size_t csw_size;
+        MASTLOG("Reading CSW.\n");
         rc = usb_pipe_read(bulk_in_pipe, &csw, sizeof(csw), &csw_size);
         MASTLOG("CSW '%s' received (%zu bytes): %s.\n",
@@ -121 +137 @@
         if (rc != EOK) {
                 MASTLOG("rc != EOK\n");
-                return rc;
+                return EIO;
         }
 
         if (csw_size != sizeof(csw)) {
                 MASTLOG("csw_size != sizeof(csw)\n");
-                return ERANGE;
+                return EIO;
         }
 
         if (csw.dCSWTag != tag) {
                 MASTLOG("csw.dCSWTag != tag\n");
-                return EBADCHECKSUM;
+                return EIO;
         }
 
@@ -137 +153 @@
          * Determine the actual return value from the CSW.
          */
-        if (csw.dCSWStatus != 0) {
-                MASTLOG("csw.dCSWStatus != 0\n");
-                // FIXME: better error code
-                // FIXME: distinguish 0x01 and 0x02
-                return EXDEV;
+        switch (csw.dCSWStatus) {
+        case cbs_passed:
+                cmd->status = CMDS_GOOD;
+                break;
+        case cbs_failed:
+                MASTLOG("Command failed\n");
+                cmd->status = CMDS_FAILED;
+                break;
+        case cbs_phase_error:
+                MASTLOG("Phase error\n");
+                retval = EIO;
+                break;
+        default:
+                retval = EIO;
+                break;
         }
 
@@ -147 +173 @@
         if (residue > dbuf_size) {
                 MASTLOG("residue > dbuf_size\n");
-                return ERANGE;
+                return EIO;
         }
 
@@ -158 +184 @@
          */
 
-        if (xferred_size != NULL)
-                *xferred_size = dbuf_size - residue;
-
-        return EOK;
-}
-
-/** Perform data-in command.
- *
- * @param mfun          Mass storage function
- * @param tag           Command block wrapper tag (automatically compared with
- *                      answer)
- * @param cmd           CDB (Command Descriptor)
- * @param cmd_size      CDB length in bytes
- * @param dbuf          Data receive buffer
- * @param dbuf_size     Data receive buffer size in bytes
- * @param proc_size     Number of bytes actually processed by device
- *
- * @return Error code
- */
-int usb_massstor_data_in(usbmast_fun_t *mfun, uint32_t tag, const void *cmd,
-    size_t cmd_size, void *dbuf, size_t dbuf_size, size_t *proc_size)
-{
-        return usb_massstor_cmd(mfun, tag, cmd, cmd_size, USB_DIRECTION_IN,
-            dbuf, dbuf_size, proc_size);
-}
-
-/** Perform data-out command.
- *
- * @param mfun          Mass storage function
- * @param tag           Command block wrapper tag (automatically compared with
- *                      answer)
- * @param cmd           CDB (Command Descriptor)
- * @param cmd_size      CDB length in bytes
- * @param data          Command data
- * @param data_size     Size of @a data in bytes
- * @param proc_size     Number of bytes actually processed by device
- *
- * @return Error code
- */
-int usb_massstor_data_out(usbmast_fun_t *mfun, uint32_t tag, const void *cmd,
-    size_t cmd_size, const void *data, size_t data_size, size_t *proc_size)
-{
-        return usb_massstor_cmd(mfun, tag, cmd, cmd_size, USB_DIRECTION_OUT,
-            (void *) data, data_size, proc_size);
+        if (ddir == USB_DIRECTION_IN)
+                cmd->rcvd_size = dbuf_size - residue;
+
+        return retval;
 }