Merge branch 'stacktrace-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...

[pandora-kernel.git] / drivers / ide / sgiioc4.c

diff --git a/drivers/ide/sgiioc4.c b/drivers/ide/sgiioc4.c
index b0769e9..e5d2a48 100644 (file)
--- a/drivers/ide/sgiioc4.c
+++ b/drivers/ide/sgiioc4.c
@@ -258,9 +258,6 @@ static int sgiioc4_dma_end(ide_drive_t *drive)
                }
        }
 
-       drive->waiting_for_dma = 0;
-       ide_destroy_dmatable(drive);
-
        return dma_stat;
 }
 
@@ -280,10 +277,12 @@ static void sgiioc4_dma_host_set(ide_drive_t *drive, int on)
                sgiioc4_clearirq(drive);
 }
 
-static void
-sgiioc4_resetproc(ide_drive_t * drive)
+static void sgiioc4_resetproc(ide_drive_t *drive)
 {
+       struct ide_cmd *cmd = &drive->hwif->cmd;
+
        sgiioc4_dma_end(drive);
+       ide_dma_unmap_sg(drive, cmd);
        sgiioc4_clearirq(drive);
 }
 
@@ -412,7 +411,6 @@ sgiioc4_configure_for_dma(int dma_direction, ide_drive_t * drive)
        writel(ending_dma_addr, (void __iomem *)(dma_base + IOC4_DMA_END_ADDR * 4));
 
        writel(dma_direction, (void __iomem *)ioc4_dma_addr);
-       drive->waiting_for_dma = 1;
 }
 
 /* IOC4 Scatter Gather list Format                                      */
@@ -424,12 +422,11 @@ sgiioc4_configure_for_dma(int dma_direction, ide_drive_t * drive)
 /* | Upper 32 bits - Zero          |EOL| 15 unused     | 16 Bit Length| */
 /* --------------------------------------------------------------------- */
 /* Creates the scatter gather list, DMA Table */
-static unsigned int
-sgiioc4_build_dma_table(ide_drive_t * drive, struct request *rq, int ddir)
+static int sgiioc4_build_dmatable(ide_drive_t *drive, struct ide_cmd *cmd)
 {
        ide_hwif_t *hwif = drive->hwif;
        unsigned int *table = hwif->dmatable_cpu;
-       unsigned int count = 0, i = hwif->cmd.sg_nents;
+       unsigned int count = 0, i = cmd->sg_nents;
        struct scatterlist *sg = hwif->sg_table;
 
        while (i && sg_dma_len(sg)) {
@@ -443,7 +440,7 @@ sgiioc4_build_dma_table(ide_drive_t * drive, struct request *rq, int ddir)
                                printk(KERN_WARNING
                                       "%s: DMA table too small\n",
                                       drive->name);
-                               goto use_pio_instead;
+                               return 0;
                        } else {
                                u32 bcount =
                                    0x10000 - (cur_addr & 0xffff);
@@ -478,30 +475,19 @@ sgiioc4_build_dma_table(ide_drive_t * drive, struct request *rq, int ddir)
                return count;
        }
 
-use_pio_instead:
-       ide_destroy_dmatable(drive);
-
        return 0;               /* revert to PIO for this request */
 }
 
-static int sgiioc4_dma_setup(ide_drive_t *drive)
+static int sgiioc4_dma_setup(ide_drive_t *drive, struct ide_cmd *cmd)
 {
-       struct request *rq = drive->hwif->rq;
-       unsigned int count = 0;
        int ddir;
+       u8 write = !!(cmd->tf_flags & IDE_TFLAG_WRITE);
 
-       if (rq_data_dir(rq))
-               ddir = PCI_DMA_TODEVICE;
-       else
-               ddir = PCI_DMA_FROMDEVICE;
-
-       if (!(count = sgiioc4_build_dma_table(drive, rq, ddir))) {
+       if (sgiioc4_build_dmatable(drive, cmd) == 0)
                /* try PIO instead of DMA */
-               ide_map_sg(drive, rq);
                return 1;
-       }
 
-       if (rq_data_dir(rq))
+       if (write)
                /* Writes TO the IOC4 FROM Main Memory */
                ddir = IOC4_DMA_READ;
        else
@@ -517,9 +503,9 @@ static const struct ide_tp_ops sgiioc4_tp_ops = {
        .exec_command           = ide_exec_command,
        .read_status            = sgiioc4_read_status,
        .read_altstatus         = ide_read_altstatus,
+       .write_devctl           = ide_write_devctl,
 
-       .set_irq                = ide_set_irq,
-
+       .dev_select             = ide_dev_select,
        .tf_load                = ide_tf_load,
        .tf_read                = ide_tf_read,
 
@@ -540,7 +526,6 @@ static const struct ide_dma_ops sgiioc4_dma_ops = {
        .dma_end                = sgiioc4_dma_end,
        .dma_test_irq           = sgiioc4_dma_test_irq,
        .dma_lost_irq           = sgiioc4_dma_lost_irq,
-       .dma_timeout            = ide_dma_timeout,
 };
 
 static const struct ide_port_info sgiioc4_port_info __devinitconst = {