Preliminary ADM5120 support, marked as broken

SVN-Revision: 6614

1 files changed, 59 insertions, 0 deletions

diff --git a/target/linux/adm5120-2.6/files/arch/mips/pci/ops-adm5120.c b/target/linux/adm5120-2.6/files/arch/mips/pci/ops-adm5120.c
new file mode 100644
index 0000000..80b8531
--- /dev/null
+++ b/target/linux/adm5120-2.6/files/arch/mips/pci/ops-adm5120.c
@@ -0,0 +1,59 @@
+/*
+ *	Copyright (C) ADMtek Incorporated.
+ *	Copyright (C) 2005 Jeroen Vreeken (pe1rxq@amsat.org)
+ */
+
+#include <linux/autoconf.h>
+#include <linux/types.h>
+#include <linux/pci.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+
+volatile u32* pci_config_address_reg = (volatile u32*)KSEG1ADDR(0x115ffff0);
+volatile u32* pci_config_data_reg = (volatile u32*)KSEG1ADDR(0x115ffff8);
+
+#define PCI_ENABLE 0x80000000
+                          
+static int pci_config_read(struct pci_bus *bus, unsigned int devfn, int where,
+                           int size, uint32_t *val)
+{
+	*pci_config_address_reg = ((bus->number & 0xff) << 0x10) |
+	    ((devfn & 0xff) << 0x08) | (where & 0xfc) | PCI_ENABLE;
+	switch (size) {
+		case 1:
+			*val = ((*pci_config_data_reg)>>((where&3)<<3))&0xff;
+			break;
+		case 2:
+			*val = ((*pci_config_data_reg)>>((where&3)<<3))&0xffff;
+			break;
+		default:
+			*val = (*pci_config_data_reg);
+	}
+	return PCIBIOS_SUCCESSFUL;
+}
+
+static int pci_config_write(struct pci_bus *bus, unsigned int devfn, int where,
+                            int size, uint32_t val)
+{
+	*pci_config_address_reg = ((bus->number & 0xff) << 0x10) |
+	    ((devfn & 0xff) << 0x08) | (where & 0xfc) | PCI_ENABLE;
+	switch (size) {
+		case 1:
+			*(volatile u8 *)(((int)pci_config_data_reg) +
+			    (where & 3)) = val;
+			break;
+		case 2:
+			*(volatile u16 *)(((int)pci_config_data_reg) +
+			    (where & 2)) = (val);
+			break;
+		default:
+			*pci_config_data_reg = (val);
+	}
+
+	return PCIBIOS_SUCCESSFUL;
+}
+
+struct pci_ops adm5120_pci_ops = {
+	.read	= pci_config_read,
+	.write	= pci_config_write,
+};