powerpc/virtex: Add Xilinx ML510 reference design support

Signed-off-by: Roderick Colenbrander <thunderbird2k@gmail.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>

arch/powerpc/platforms/44x/Kconfig

@@ -156,7 +156,7 @@ config YOSEMITE
 #	  This option enables support for the IBM PPC440GX evaluation board.
 
 config XILINX_VIRTEX440_GENERIC_BOARD
-	bool "Generic Xilinx Virtex 440 board"
+	bool "Generic Xilinx Virtex 5 FXT board support"
 	depends on 44x
 	default n
 	select XILINX_VIRTEX_5_FXT
@@ -171,6 +171,17 @@ config XILINX_VIRTEX440_GENERIC_BOARD
 	  Most Virtex 5 designs should use this unless it needs to do some
 	  special configuration at board probe time.
 
+config XILINX_ML510
+	bool "Xilinx ML510 extra support"
+	depends on XILINX_VIRTEX440_GENERIC_BOARD
+	select PPC_PCI_CHOICE
+	select XILINX_PCI if PCI
+	select PPC_INDIRECT_PCI if PCI
+	select PPC_I8259 if PCI
+	help
+	  This option enables extra support for features on the Xilinx ML510
+	  board.  The ML510 has a PCI bus with ALI south bridge.
+
 config PPC44x_SIMPLE
 	bool "Simple PowerPC 44x board support"
 	depends on 44x

arch/powerpc/platforms/44x/Makefile

@@ -4,3 +4,4 @@ obj-$(CONFIG_EBONY)	+= ebony.o
 obj-$(CONFIG_SAM440EP) 	+= sam440ep.o
 obj-$(CONFIG_WARP)	+= warp.o
 obj-$(CONFIG_XILINX_VIRTEX_5_FXT) += virtex.o
+obj-$(CONFIG_XILINX_ML510) += virtex_ml510.o

arch/powerpc/platforms/44x/virtex_ml510.c

@@ -0,0 +1,29 @@
+#include <asm/i8259.h>
+#include <linux/pci.h>
+#include "44x.h"
+
+/**
+ * ml510_ail_quirk
+ */
+static void __devinit ml510_ali_quirk(struct pci_dev *dev)
+{
+	/* Enable the IDE controller */
+	pci_write_config_byte(dev, 0x58, 0x4c);
+	/* Assign irq 14 to the primary ide channel */
+	pci_write_config_byte(dev, 0x44, 0x0d);
+	/* Assign irq 15 to the secondary ide channel */
+	pci_write_config_byte(dev, 0x75, 0x0f);
+	/* Set the ide controller in native mode */
+	pci_write_config_byte(dev, 0x09, 0xff);
+
+	/* INTB = disabled, INTA = disabled */
+	pci_write_config_byte(dev, 0x48, 0x00);
+	/* INTD = disabled, INTC = disabled */
+	pci_write_config_byte(dev, 0x4a, 0x00);
+	/* Audio = INT7, Modem = disabled. */
+	pci_write_config_byte(dev, 0x4b, 0x60);
+	/* USB = INT7 */
+	pci_write_config_byte(dev, 0x74, 0x06);
+}
+DECLARE_PCI_FIXUP_EARLY(0x10b9, 0x1533, ml510_ali_quirk);
+

arch/powerpc/sysdev/xilinx_intc.c

@@ -257,6 +257,11 @@ static void __init xilinx_i8259_setup_cascade(void)
 	i8259_init(cascade_node, 0);
 	set_irq_chained_handler(cascade_irq, xilinx_i8259_cascade);
 
+	/* Program irq 7 (usb/audio), 14/15 (ide) to level sensitive */
+	/* This looks like a dirty hack to me --gcl */
+	outb(0xc0, 0x4d0);
+	outb(0xc0, 0x4d1);
+
  out:
 	of_node_put(cascade_node);
 }