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Subject[PATCH 3/7] ide-pmac: use ->init_dma method
Date
* Move pmif->dma_regs check from pmac_ide_setup_device() to
pmac_ide_init_dma().

* Get 'pmif' from 'hwif->hwif_data' in pmac_ide_init_dma() and replace
'pmac_ide_hwif_t *pmif' argument by 'const struct ide_port_info *d'.

* Add pmac_ide_init_dma() implementation for CONFIG_BLK_DEV_IDEDMA_PMAC=n
case and convert the driver to use ->init_dma method.

Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
---
drivers/ide/ppc/pmac.c | 20 ++++++++++++--------
1 file changed, 12 insertions(+), 8 deletions(-)

Index: b/drivers/ide/ppc/pmac.c
===================================================================
--- a/drivers/ide/ppc/pmac.c
+++ b/drivers/ide/ppc/pmac.c
@@ -409,7 +409,7 @@ kauai_lookup_timing(struct kauai_timing*
*/
#define IDE_WAKEUP_DELAY (1*HZ)

-static int pmac_ide_setup_dma(pmac_ide_hwif_t *pmif, ide_hwif_t *hwif);
+static int pmac_ide_init_dma(ide_hwif_t *, const struct ide_port_info *);
static int pmac_ide_build_dmatable(ide_drive_t *drive, struct request *rq);
static void pmac_ide_selectproc(ide_drive_t *drive);
static void pmac_ide_kauai_selectproc(ide_drive_t *drive);
@@ -931,11 +931,11 @@ static const struct ide_port_ops pmac_id
};

static const struct ide_port_info pmac_port_info = {
+ .init_dma = pmac_ide_init_dma,
.chipset = ide_pmac,
.port_ops = &pmac_ide_port_ops,
.host_flags = IDE_HFLAG_SET_PIO_MODE_KEEP_DMA |
IDE_HFLAG_POST_SET_MODE |
- IDE_HFLAG_NO_DMA | /* no SFF-style DMA */
IDE_HFLAG_UNMASK_IRQS,
.pio_mask = ATA_PIO4,
.mwdma_mask = ATA_MWDMA2,
@@ -1067,10 +1067,7 @@ pmac_ide_setup_device(pmac_ide_hwif_t *p
#ifdef CONFIG_BLK_DEV_IDEDMA_PMAC
if (pmif->cable_80 == 0)
d.udma_mask &= ATA_UDMA2;
- /* has a DBDMA controller channel */
- if (pmif->dma_regs == 0 || pmac_ide_setup_dma(pmif, hwif) < 0)
#endif
- d.udma_mask = d.mwdma_mask = 0;

idx[0] = hwif->index;

@@ -1677,14 +1674,16 @@ pmac_ide_dma_lost_irq (ide_drive_t *driv
* Allocate the data structures needed for using DMA with an interface
* and fill the proper list of functions pointers
*/
-static int __devinit pmac_ide_setup_dma(pmac_ide_hwif_t *pmif, ide_hwif_t *hwif)
+static int __devinit pmac_ide_init_dma(ide_hwif_t *hwif,
+ const struct ide_port_info *d)
{
+ pmac_ide_hwif_t *pmif = (pmac_ide_hwif_t *)hwif->hwif_data;
struct pci_dev *dev = to_pci_dev(hwif->dev);

/* We won't need pci_dev if we switch to generic consistent
* DMA routines ...
*/
- if (dev == NULL)
+ if (dev == NULL || pmif->dma_regs == 0)
return -ENODEV;
/*
* Allocate space for the DBDMA commands.
@@ -1714,7 +1713,12 @@ static int __devinit pmac_ide_setup_dma(

return 0;
}
-
+#else
+static int __devinit pmac_ide_init_dma(ide_hwif_t *hwif,
+ const struct ide_port_info *d)
+{
+ return -EOPNOTSUPP;
+}
#endif /* CONFIG_BLK_DEV_IDEDMA_PMAC */

module_init(pmac_ide_probe);

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