1 files changed, 62 insertions, 35 deletions

diff --git a/drivers/ide/ide-taskfile.c b/drivers/ide/ide-taskfile.c
index 243421ce40d0..4aa6223c11be 100644
--- a/drivers/ide/ide-taskfile.c
+++ b/drivers/ide/ide-taskfile.c
@@ -23,17 +23,33 @@
 #include <asm/uaccess.h>
 #include <asm/io.h>
 
-void ide_tf_dump(const char *s, struct ide_taskfile *tf)
+void ide_tf_readback(ide_drive_t *drive, struct ide_cmd *cmd)
+{
+        ide_hwif_t *hwif = drive->hwif;
+        const struct ide_tp_ops *tp_ops = hwif->tp_ops;
+
+        /* Be sure we're looking at the low order bytes */
+        tp_ops->write_devctl(hwif, ATA_DEVCTL_OBS);
+
+        tp_ops->tf_read(drive, &cmd->tf, cmd->valid.in.tf);
+
+        if (cmd->tf_flags & IDE_TFLAG_LBA48) {
+                tp_ops->write_devctl(hwif, ATA_HOB | ATA_DEVCTL_OBS);
+
+                tp_ops->tf_read(drive, &cmd->hob, cmd->valid.in.hob);
+        }
+}
+
+void ide_tf_dump(const char *s, struct ide_cmd *cmd)
 {
 #ifdef DEBUG
         printk("%s: tf: feat 0x%02x nsect 0x%02x lbal 0x%02x "
                 "lbam 0x%02x lbah 0x%02x dev 0x%02x cmd 0x%02x\n",
-                s, tf->feature, tf->nsect, tf->lbal,
-                tf->lbam, tf->lbah, tf->device, tf->command);
-        printk("%s: hob: nsect 0x%02x lbal 0x%02x "
-                "lbam 0x%02x lbah 0x%02x\n",
-                s, tf->hob_nsect, tf->hob_lbal,
-                tf->hob_lbam, tf->hob_lbah);
+               s, cmd->tf.feature, cmd->tf.nsect,
+               cmd->tf.lbal, cmd->tf.lbam, cmd->tf.lbah,
+               cmd->tf.device, cmd->tf.command);
+        printk("%s: hob: nsect 0x%02x lbal 0x%02x lbam 0x%02x lbah 0x%02x\n",
+               s, cmd->hob.nsect, cmd->hob.lbal, cmd->hob.lbam, cmd->hob.lbah);
 #endif
 }
 
@@ -47,7 +63,8 @@ int taskfile_lib_get_identify (ide_drive_t *drive, u8 *buf)
                 cmd.tf.command = ATA_CMD_ID_ATA;
         else
                 cmd.tf.command = ATA_CMD_ID_ATAPI;
-        cmd.tf_flags = IDE_TFLAG_TF | IDE_TFLAG_DEVICE;
+        cmd.valid.out.tf = IDE_VALID_OUT_TF | IDE_VALID_DEVICE;
+        cmd.valid.in.tf  = IDE_VALID_IN_TF  | IDE_VALID_DEVICE;
         cmd.protocol = ATA_PROT_PIO;
 
         return ide_raw_taskfile(drive, &cmd, buf, 1);
@@ -79,16 +96,27 @@ ide_startstop_t do_rw_taskfile(ide_drive_t *drive, struct ide_cmd *orig_cmd)
         memcpy(cmd, orig_cmd, sizeof(*cmd));
 
         if ((cmd->tf_flags & IDE_TFLAG_DMA_PIO_FALLBACK) == 0) {
-                ide_tf_dump(drive->name, tf);
+                ide_tf_dump(drive->name, cmd);
                 tp_ops->write_devctl(hwif, ATA_DEVCTL_OBS);
                 SELECT_MASK(drive, 0);
 
                 if (cmd->ftf_flags & IDE_FTFLAG_OUT_DATA) {
-                        u8 data[2] = { tf->data, tf->hob_data };
+                        u8 data[2] = { cmd->tf.data, cmd->hob.data };
 
                         tp_ops->output_data(drive, cmd, data, 2);
                 }
-                tp_ops->tf_load(drive, cmd);
+
+                if (cmd->valid.out.tf & IDE_VALID_DEVICE) {
+                        u8 HIHI = (cmd->tf_flags & IDE_TFLAG_LBA48) ?
+                                  0xE0 : 0xEF;
+
+                        if (!(cmd->ftf_flags & IDE_FTFLAG_FLAGGED))
+                                cmd->tf.device &= HIHI;
+                        cmd->tf.device |= drive->select;
+                }
+
+                tp_ops->tf_load(drive, &cmd->hob, cmd->valid.out.hob);
+                tp_ops->tf_load(drive, &cmd->tf,  cmd->valid.out.tf);
         }
 
         switch (cmd->protocol) {
@@ -489,16 +517,17 @@ int ide_taskfile_ioctl(ide_drive_t *drive, unsigned long arg)
 
         memset(&cmd, 0, sizeof(cmd));
 
-        memcpy(&cmd.tf_array[0], req_task->hob_ports,
-               HDIO_DRIVE_HOB_HDR_SIZE - 2);
-        memcpy(&cmd.tf_array[6], req_task->io_ports,
-               HDIO_DRIVE_TASK_HDR_SIZE);
+        memcpy(&cmd.hob, req_task->hob_ports, HDIO_DRIVE_HOB_HDR_SIZE - 2);
+        memcpy(&cmd.tf,  req_task->io_ports,  HDIO_DRIVE_TASK_HDR_SIZE);
 
-        cmd.tf_flags   = IDE_TFLAG_IO_16BIT | IDE_TFLAG_DEVICE |
-                         IDE_TFLAG_IN_TF;
+        cmd.valid.out.tf = IDE_VALID_DEVICE;
+        cmd.valid.in.tf  = IDE_VALID_DEVICE | IDE_VALID_IN_TF;
+        cmd.tf_flags = IDE_TFLAG_IO_16BIT;
 
-        if (drive->dev_flags & IDE_DFLAG_LBA48)
-                cmd.tf_flags |= (IDE_TFLAG_LBA48 | IDE_TFLAG_IN_HOB);
+        if (drive->dev_flags & IDE_DFLAG_LBA48) {
+                cmd.tf_flags |= IDE_TFLAG_LBA48;
+                cmd.valid.in.hob = IDE_VALID_IN_HOB;
+        }
 
         if (req_task->out_flags.all) {
                 cmd.ftf_flags |= IDE_FTFLAG_FLAGGED;
@@ -507,28 +536,28 @@ int ide_taskfile_ioctl(ide_drive_t *drive, unsigned long arg)
                         cmd.ftf_flags |= IDE_FTFLAG_OUT_DATA;
 
                 if (req_task->out_flags.b.nsector_hob)
-                        cmd.tf_flags |= IDE_TFLAG_OUT_HOB_NSECT;
+                        cmd.valid.out.hob |= IDE_VALID_NSECT;
                 if (req_task->out_flags.b.sector_hob)
-                        cmd.tf_flags |= IDE_TFLAG_OUT_HOB_LBAL;
+                        cmd.valid.out.hob |= IDE_VALID_LBAL;
                 if (req_task->out_flags.b.lcyl_hob)
-                        cmd.tf_flags |= IDE_TFLAG_OUT_HOB_LBAM;
+                        cmd.valid.out.hob |= IDE_VALID_LBAM;
                 if (req_task->out_flags.b.hcyl_hob)
-                        cmd.tf_flags |= IDE_TFLAG_OUT_HOB_LBAH;
+                        cmd.valid.out.hob |= IDE_VALID_LBAH;
 
                 if (req_task->out_flags.b.error_feature)
-                        cmd.tf_flags |= IDE_TFLAG_OUT_FEATURE;
+                        cmd.valid.out.tf  |= IDE_VALID_FEATURE;
                 if (req_task->out_flags.b.nsector)
-                        cmd.tf_flags |= IDE_TFLAG_OUT_NSECT;
+                        cmd.valid.out.tf  |= IDE_VALID_NSECT;
                 if (req_task->out_flags.b.sector)
-                        cmd.tf_flags |= IDE_TFLAG_OUT_LBAL;
+                        cmd.valid.out.tf  |= IDE_VALID_LBAL;
                 if (req_task->out_flags.b.lcyl)
-                        cmd.tf_flags |= IDE_TFLAG_OUT_LBAM;
+                        cmd.valid.out.tf  |= IDE_VALID_LBAM;
                 if (req_task->out_flags.b.hcyl)
-                        cmd.tf_flags |= IDE_TFLAG_OUT_LBAH;
+                        cmd.valid.out.tf  |= IDE_VALID_LBAH;
         } else {
-                cmd.tf_flags |= IDE_TFLAG_OUT_TF;
+                cmd.valid.out.tf |= IDE_VALID_OUT_TF;
                 if (cmd.tf_flags & IDE_TFLAG_LBA48)
-                        cmd.tf_flags |= IDE_TFLAG_OUT_HOB;
+                        cmd.valid.out.hob |= IDE_VALID_OUT_HOB;
         }
 
         if (req_task->in_flags.b.data)
@@ -594,7 +623,7 @@ int ide_taskfile_ioctl(ide_drive_t *drive, unsigned long arg)
         if (req_task->req_cmd == IDE_DRIVE_TASK_NO_DATA)
                 nsect = 0;
         else if (!nsect) {
-                nsect = (cmd.tf.hob_nsect << 8) | cmd.tf.nsect;
+                nsect = (cmd.hob.nsect << 8) | cmd.tf.nsect;
 
                 if (!nsect) {
                         printk(KERN_ERR "%s: in/out command without data\n",
@@ -606,10 +635,8 @@ int ide_taskfile_ioctl(ide_drive_t *drive, unsigned long arg)
 
         err = ide_raw_taskfile(drive, &cmd, data_buf, nsect);
 
-        memcpy(req_task->hob_ports, &cmd.tf_array[0],
-               HDIO_DRIVE_HOB_HDR_SIZE - 2);
-        memcpy(req_task->io_ports, &cmd.tf_array[6],
-               HDIO_DRIVE_TASK_HDR_SIZE);
+        memcpy(req_task->hob_ports, &cmd.hob, HDIO_DRIVE_HOB_HDR_SIZE - 2);
+        memcpy(req_task->io_ports,  &cmd.tf,  HDIO_DRIVE_TASK_HDR_SIZE);
 
         if ((cmd.ftf_flags & IDE_FTFLAG_SET_IN_FLAGS) &&
             req_task->in_flags.all == 0) {