Cleaned up AMD Au1200 IDE driver:
- converted to platform bus
- removed pci dependencies
- removed virt_to_phys/phys_to_virt calls
System now can root off of a disk.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/Documentation/mips/AU1xxx_IDE.README b/Documentation/mips/AU1xxx_IDE.README
new file mode 100644
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index 8746e1b..dc5c629 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -799,7 +799,7 @@
config MIPS_DB1200
bool "AMD Alchemy DB1200 board"
select SOC_AU1200
- select DMA_NONCOHERENT
+ select DMA_COHERENT
select MIPS_DISABLE_OBSOLETE_IDE
select SYS_SUPPORTS_LITTLE_ENDIAN
diff --git a/arch/mips/au1000/common/dbdma.c b/arch/mips/au1000/common/dbdma.c
index 8f78c2f..eb5803a 100644
--- a/arch/mips/au1000/common/dbdma.c
+++ b/arch/mips/au1000/common/dbdma.c
@@ -197,6 +197,12 @@
return NULL;
}
+void * au1xxx_ddma_get_nextptr_virt(au1x_ddma_desc_t *dp)
+{
+ return phys_to_virt(DSCR_GET_NXTPTR(dp->dscr_nxtptr));
+}
+EXPORT_SYMBOL(au1xxx_ddma_get_nextptr_virt);
+
u32
au1xxx_ddma_add_device(dbdev_tab_t *dev)
{
diff --git a/arch/mips/au1000/common/platform.c b/arch/mips/au1000/common/platform.c
index 0c3fd72..4aca18f 100644
--- a/arch/mips/au1000/common/platform.c
+++ b/arch/mips/au1000/common/platform.c
@@ -12,7 +12,7 @@
#include <linux/init.h>
#include <linux/resource.h>
-#include <asm/mach-au1x00/au1000.h>
+#include <asm/mach-au1x00/au1xxx.h>
/* OHCI (USB full speed host controller) */
static struct resource au1xxx_usb_ohci_resources[] = {
@@ -154,7 +154,6 @@
.resource = au1xxx_usb_otg_resources,
};
-/*** AU1200 LCD controller ***/
static struct resource au1200_lcd_resources[] = {
[0] = {
.start = LCD_PHYS_ADDR,
@@ -168,6 +167,19 @@
}
};
+static struct resource au1200_ide0_resources[] = {
+ [0] = {
+ .start = AU1XXX_ATA_PHYS_ADDR,
+ .end = AU1XXX_ATA_PHYS_ADDR + AU1XXX_ATA_PHYS_LEN,
+ .flags = IORESOURCE_MEM,
+ },
+ [1] = {
+ .start = AU1XXX_ATA_INT,
+ .end = AU1XXX_ATA_INT,
+ .flags = IORESOURCE_IRQ,
+ }
+};
+
static u64 au1200_lcd_dmamask = ~(u32)0;
static struct platform_device au1200_lcd_device = {
@@ -180,6 +192,21 @@
.num_resources = ARRAY_SIZE(au1200_lcd_resources),
.resource = au1200_lcd_resources,
};
+
+
+static u64 ide0_dmamask = ~(u32)0;
+
+static struct platform_device au1200_ide0_device = {
+ .name = "au1200-ide",
+ .id = 0,
+ .dev = {
+ .dma_mask = &ide0_dmamask,
+ .coherent_dma_mask = 0xffffffff,
+ },
+ .num_resources = ARRAY_SIZE(au1200_ide0_resources),
+ .resource = au1200_ide0_resources,
+};
+
#endif
static struct platform_device *au1xxx_platform_devices[] __initdata = {
@@ -194,6 +221,7 @@
&au1xxx_usb_gdt_device,
&au1xxx_usb_otg_device,
&au1200_lcd_device,
+ &au1200_ide0_device,
#endif
};
diff --git a/arch/mips/au1000/pb1200/irqmap.c b/arch/mips/au1000/pb1200/irqmap.c
index 2ec64e7..59e70e5 100644
--- a/arch/mips/au1000/pb1200/irqmap.c
+++ b/arch/mips/au1000/pb1200/irqmap.c
@@ -22,6 +22,7 @@
* with this program; if not, write to the Free Software Foundation, Inc.,
* 675 Mass Ave, Cambridge, MA 02139, USA.
*/
+#include <linux/config.h>
#include <linux/errno.h>
#include <linux/init.h>
#include <linux/irq.h>
@@ -65,7 +66,7 @@
*/
static volatile int pb1200_cascade_en=0;
-void pb1200_cascade_handler( int irq, void *dev_id, struct pt_regs *regs)
+irqreturn_t pb1200_cascade_handler( int irq, void *dev_id, struct pt_regs *regs)
{
unsigned short bisr = bcsr->int_status;
int extirq_nr = 0;
@@ -78,6 +79,7 @@
/* Ack and dispatch IRQ */
do_IRQ(extirq_nr,regs);
}
+ return IRQ_RETVAL(1);
}
inline void pb1200_enable_irq(unsigned int irq_nr)
@@ -97,7 +99,7 @@
if (++pb1200_cascade_en == 1)
{
request_irq(AU1000_GPIO_7, &pb1200_cascade_handler,
- 0, "Pb1200 Cascade", &pb1200_cascade_handler );
+ 0, "Pb1200 Cascade", (void *)&pb1200_cascade_handler );
#ifdef CONFIG_MIPS_PB1200
/* We have a problem with CPLD rev3. Enable a workaround */
if( ((bcsr->whoami & BCSR_WHOAMI_CPLD)>>4) <= 3)