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-rw-r--r--drivers/ide/ide-probe.c1
-rw-r--r--drivers/ide/pci/alim15x3.c12
-rw-r--r--drivers/ide/pci/hpt366.c12
-rw-r--r--drivers/ide/setup-pci.c35
4 files changed, 42 insertions, 18 deletions
diff --git a/drivers/ide/ide-probe.c b/drivers/ide/ide-probe.c
index 9d8686a49fc..ec5f58c6f19 100644
--- a/drivers/ide/ide-probe.c
+++ b/drivers/ide/ide-probe.c
@@ -1363,6 +1363,7 @@ static void ide_init_port(ide_hwif_t *hwif, unsigned int port,
if (rc < 0) {
printk(KERN_INFO "%s: DMA disabled\n", hwif->name);
+ hwif->dma_base = 0;
hwif->swdma_mask = 0;
hwif->mwdma_mask = 0;
hwif->ultra_mask = 0;
diff --git a/drivers/ide/pci/alim15x3.c b/drivers/ide/pci/alim15x3.c
index 8015f6f6548..5ef7817ac64 100644
--- a/drivers/ide/pci/alim15x3.c
+++ b/drivers/ide/pci/alim15x3.c
@@ -471,7 +471,15 @@ static int __devinit init_dma_ali15x3(ide_hwif_t *hwif,
struct pci_dev *dev = to_pci_dev(hwif->dev);
unsigned long base = ide_pci_dma_base(hwif, d);
- if (base == 0 || ide_pci_set_master(dev, d->name) < 0)
+ if (base == 0)
+ return -1;
+
+ hwif->dma_base = base;
+
+ if (ide_pci_check_simplex(hwif, d) < 0)
+ return -1;
+
+ if (ide_pci_set_master(dev, d->name) < 0)
return -1;
if (!hwif->channel)
@@ -483,8 +491,6 @@ static int __devinit init_dma_ali15x3(ide_hwif_t *hwif,
if (ide_allocate_dma_engine(hwif))
return -1;
- hwif->dma_base = base;
-
hwif->dma_ops = &sff_dma_ops;
return 0;
diff --git a/drivers/ide/pci/hpt366.c b/drivers/ide/pci/hpt366.c
index 201e5ddae92..e5651cefa39 100644
--- a/drivers/ide/pci/hpt366.c
+++ b/drivers/ide/pci/hpt366.c
@@ -1320,7 +1320,15 @@ static int __devinit init_dma_hpt366(ide_hwif_t *hwif,
unsigned long flags, base = ide_pci_dma_base(hwif, d);
u8 dma_old, dma_new, masterdma = 0, slavedma = 0;
- if (base == 0 || ide_pci_set_master(dev, d->name) < 0)
+ if (base == 0)
+ return -1;
+
+ hwif->dma_base = base;
+
+ if (ide_pci_check_simplex(hwif, d) < 0)
+ return -1;
+
+ if (ide_pci_set_master(dev, d->name) < 0)
return -1;
dma_old = inb(base + 2);
@@ -1346,8 +1354,6 @@ static int __devinit init_dma_hpt366(ide_hwif_t *hwif,
if (ide_allocate_dma_engine(hwif))
return -1;
- hwif->dma_base = base;
-
hwif->dma_ops = &sff_dma_ops;
return 0;
diff --git a/drivers/ide/setup-pci.c b/drivers/ide/setup-pci.c
index b047013f365..c1b609d9cb2 100644
--- a/drivers/ide/setup-pci.c
+++ b/drivers/ide/setup-pci.c
@@ -73,15 +73,12 @@ static void ide_pci_clear_simplex(unsigned long dma_base, const char *name)
* @d: IDE port info
*
* Fetch the DMA Bus-Master-I/O-Base-Address (BMIBA) from PCI space.
- * Where a device has a partner that is already in DMA mode we check
- * and enforce IDE simplex rules.
*/
unsigned long ide_pci_dma_base(ide_hwif_t *hwif, const struct ide_port_info *d)
{
struct pci_dev *dev = to_pci_dev(hwif->dev);
unsigned long dma_base = 0;
- u8 dma_stat = 0;
if (hwif->host_flags & IDE_HFLAG_MMIO)
return hwif->dma_base;
@@ -102,11 +99,19 @@ unsigned long ide_pci_dma_base(ide_hwif_t *hwif, const struct ide_port_info *d)
if (hwif->channel)
dma_base += 8;
- if (d->host_flags & IDE_HFLAG_CS5520)
+ return dma_base;
+}
+EXPORT_SYMBOL_GPL(ide_pci_dma_base);
+
+int ide_pci_check_simplex(ide_hwif_t *hwif, const struct ide_port_info *d)
+{
+ u8 dma_stat;
+
+ if (d->host_flags & (IDE_HFLAG_MMIO | IDE_HFLAG_CS5520))
goto out;
if (d->host_flags & IDE_HFLAG_CLEAR_SIMPLEX) {
- ide_pci_clear_simplex(dma_base, d->name);
+ ide_pci_clear_simplex(hwif->dma_base, d->name);
goto out;
}
@@ -120,15 +125,15 @@ unsigned long ide_pci_dma_base(ide_hwif_t *hwif, const struct ide_port_info *d)
* we tune the drive then try to grab DMA ownership if we want to be
* the DMA end. This has to be become dynamic to handle hot-plug.
*/
- dma_stat = hwif->INB(dma_base + 2);
+ dma_stat = hwif->read_sff_dma_status(hwif);
if ((dma_stat & 0x80) && hwif->mate && hwif->mate->dma_base) {
printk(KERN_INFO "%s: simplex device: DMA disabled\n", d->name);
- dma_base = 0;
+ return -1;
}
out:
- return dma_base;
+ return 0;
}
-EXPORT_SYMBOL_GPL(ide_pci_dma_base);
+EXPORT_SYMBOL_GPL(ide_pci_check_simplex);
/*
* Set up BM-DMA capability (PnP BIOS should have done this)
@@ -363,7 +368,15 @@ int ide_hwif_setup_dma(ide_hwif_t *hwif, const struct ide_port_info *d)
(dev->class & 0x80))) {
unsigned long base = ide_pci_dma_base(hwif, d);
- if (base == 0 || ide_pci_set_master(dev, d->name) < 0)
+ if (base == 0)
+ return -1;
+
+ hwif->dma_base = base;
+
+ if (ide_pci_check_simplex(hwif, d) < 0)
+ return -1;
+
+ if (ide_pci_set_master(dev, d->name) < 0)
return -1;
if (hwif->host_flags & IDE_HFLAG_MMIO)
@@ -377,8 +390,6 @@ int ide_hwif_setup_dma(ide_hwif_t *hwif, const struct ide_port_info *d)
if (ide_allocate_dma_engine(hwif))
return -1;
- hwif->dma_base = base;
-
hwif->dma_ops = &sff_dma_ops;
}