[MIPS] Add back support for LASAT platforms

Signed-off-by: Brian Murphy <brian@murphy.dk>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

1 files changed, 91 insertions, 0 deletions

diff --git a/arch/mips/pci/pci-lasat.c b/arch/mips/pci/pci-lasat.c
new file mode 100644
index 000000000000..5abd5c7119be
--- /dev/null
+++ b/arch/mips/pci/pci-lasat.c
@@ -0,0 +1,91 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2000, 2001, 04 Keith M Wesolowski
+ */
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/pci.h>
+#include <linux/types.h>
+#include <asm/bootinfo.h>
+
+extern struct pci_ops nile4_pci_ops;
+extern struct pci_ops gt64xxx_pci0_ops;
+static struct resource lasat_pci_mem_resource = {
+        .name   = "LASAT PCI MEM",
+        .start  = 0x18000000,
+        .end    = 0x19ffffff,
+        .flags  = IORESOURCE_MEM,
+};
+
+static struct resource lasat_pci_io_resource = {
+        .name   = "LASAT PCI IO",
+        .start  = 0x1a000000,
+        .end    = 0x1bffffff,
+        .flags  = IORESOURCE_IO,
+};
+
+static struct pci_controller lasat_pci_controller = {
+        .mem_resource   = &lasat_pci_mem_resource,
+        .io_resource    = &lasat_pci_io_resource,
+};
+
+static int __init lasat_pci_setup(void)
+{
+        printk(KERN_DEBUG "PCI: starting\n");
+
+        switch (mips_machtype) {
+        case MACH_LASAT_100:
+                lasat_pci_controller.pci_ops = &gt64xxx_pci0_ops;
+                break;
+        case MACH_LASAT_200:
+                lasat_pci_controller.pci_ops = &nile4_pci_ops;
+                break;
+        default:
+                panic("pcibios_init: mips_machtype incorrect");
+        }
+
+        register_pci_controller(&lasat_pci_controller);
+
+        return 0;
+}
+
+arch_initcall(lasat_pci_setup);
+
+#define LASATINT_ETH1   0
+#define LASATINT_ETH0   1
+#define LASATINT_HDC    2
+#define LASATINT_COMP   3
+#define LASATINT_HDLC   4
+#define LASATINT_PCIA   5
+#define LASATINT_PCIB   6
+#define LASATINT_PCIC   7
+#define LASATINT_PCID   8
+
+int __init pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
+{
+        switch (slot) {
+        case 1:
+        case 2:
+        case 3:
+                return LASATINT_PCIA + (((slot-1) + (pin-1)) % 4);
+        case 4:
+                return LASATINT_ETH1;   /* Ethernet 1 (LAN 2) */
+        case 5:
+                return LASATINT_ETH0;   /* Ethernet 0 (LAN 1) */
+        case 6:
+                return LASATINT_HDC;    /* IDE controller */
+        default:
+                return 0xff;            /* Illegal */
+        }
+
+        return -1;
+}
+
+/* Do platform specific device initialization at pci_enable_device() time */
+int pcibios_plat_dev_init(struct pci_dev *dev)
+{
+        return 0;
+}