From 8fb9ab479d4b4df9d66ea4f2f92fa7cf7ff43db5 Mon Sep 17 00:00:00 2001
From: blogic <blogic@3c298f89-4303-0410-b956-a3cf2f4a3e73>
Date: Sun, 4 Oct 2009 19:53:17 +0000
Subject: adds pci support for rt288x

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@17855 3c298f89-4303-0410-b956-a3cf2f4a3e73
---
 .../linux/ramips/files/arch/mips/pci/ops-rt288x.c  | 70 ++++++++++++++++++++++
 1 file changed, 70 insertions(+)
 create mode 100644 target/linux/ramips/files/arch/mips/pci/ops-rt288x.c

(limited to 'target/linux/ramips/files/arch/mips/pci/ops-rt288x.c')

diff --git a/target/linux/ramips/files/arch/mips/pci/ops-rt288x.c b/target/linux/ramips/files/arch/mips/pci/ops-rt288x.c
new file mode 100644
index 000000000..44dadc9af
--- /dev/null
+++ b/target/linux/ramips/files/arch/mips/pci/ops-rt288x.c
@@ -0,0 +1,70 @@
+#include <linux/types.h>
+#include <linux/pci.h>
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/version.h>
+#include <asm/pci.h>
+#include <asm/io.h>
+#include <linux/init.h>
+#include <linux/mod_devicetable.h>
+#include <asm/mach-rt288x/rt288x.h>
+#include <asm/mach-rt288x/rt288x_pci.h>
+
+#ifdef CONFIG_PCI
+
+#define PCI_ACCESS_READ  0
+#define PCI_ACCESS_WRITE 1
+
+static int config_access(unsigned char access_type, struct pci_bus *bus,
+	unsigned int devfn, unsigned char where, u32 * data)
+{
+	unsigned int slot = PCI_SLOT(devfn);
+	unsigned int address;
+	u8 func = PCI_FUNC(devfn);
+	address = (bus->number << 16) | (slot << 11) | (func << 8) | (where& 0xfc) | 0x80000000;
+	writel(address, RT2880_PCI_CONFIG_ADDR);
+	if (access_type == PCI_ACCESS_WRITE)
+		writel(*data, RT2880_PCI_CONFIG_DATA);
+	else
+		*data = readl(RT2880_PCI_CONFIG_DATA);
+	return 0;
+}
+
+int
+pci_config_read(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 * val)
+{
+	u32 data = 0;
+	if(config_access(PCI_ACCESS_READ, bus, devfn, where, &data))
+		return PCIBIOS_DEVICE_NOT_FOUND;
+	if(size == 1)
+		*val = (data >> ((where & 3) << 3)) & 0xff;
+	else if(size == 2)
+		*val = (data >> ((where & 3) << 3)) & 0xffff;
+	else
+		*val = data;
+	return PCIBIOS_SUCCESSFUL;
+}
+
+int
+pci_config_write(struct pci_bus *bus, unsigned int devfn,
+	int where, int size, u32 val)
+{
+	u32 data = 0;
+	if(size == 4)
+	{
+		data = val;
+	} else {
+		if(config_access(PCI_ACCESS_READ, bus, devfn, where, &data))
+			return PCIBIOS_DEVICE_NOT_FOUND;
+		if(size == 1)
+			data = (data & ~(0xff << ((where & 3) << 3))) |
+				(val << ((where & 3) << 3));
+		else if(size == 2)
+			data = (data & ~(0xffff << ((where & 3) << 3))) |
+				(val << ((where & 3) << 3));
+	}
+	if(config_access(PCI_ACCESS_WRITE, bus, devfn, where, &data))
+		return PCIBIOS_DEVICE_NOT_FOUND;
+	return PCIBIOS_SUCCESSFUL;
+}
+#endif
-- 
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