- Add irq mapping for PCI
- Add PCI for Sequoia in Makefile
- Add PCI ops
- Add PCI setup and functions
Signed-Off-By: Kiran Kumar Thota <kiran_thota@xxxxxxxxxxxxxx>
diff -Naur a/arch/mips/pci/fixup-sequoia.c b/arch/mips/pci/fixup-sequoia.c
--- a/arch/mips/pci/fixup-sequoia.c 1969-12-31 16:00:00.000000000 -0800
+++ b/arch/mips/pci/fixup-sequoia.c 2006-06-22 11:48:21.000000000 -0700
@@ -0,0 +1,43 @@
+/*
+ * Copyright 2006 PMC-Sierra
+ * Author: PMC Sierra Inc (thotakir@xxxxxxxxxxxxxx)
+ *
+ */
+
+#include <linux/types.h>
+#include <linux/pci.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <asm/pci.h>
+
+
+int __init pcibios_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
+{
+ if (pin == 0)
+ return -1;
+
+ if ((dev->bus->number == 0) &&
+ (slot== 2)) {
+ /* bus 0, slot 0 */
+ return 11;
+ } else if ((dev->bus->number == 0) &&
+ (slot == 3)) {
+ /* bus 0, slot 1 */
+ return 12;
+ } else if ((dev->bus->number == 1) &&
+ (slot == 2)) {
+ /* bus 1, slot 0 */
+ return 13;
+ } else if ((dev->bus->number == 1) &&
+ (slot == 3)) {
+ /* bus 1, slot 1 */
+ return 14;
+ }
+}
+
+/* Do platform specific device initialization at pci_enable_device() time */
+int pcibios_plat_dev_init(struct pci_dev *dev)
+{
+ return 0;
+}
+
diff -Naur a/arch/mips/pci/Makefile b/arch/mips/pci/Makefile
--- a/arch/mips/pci/Makefile 2005-07-11 11:28:10.000000000 -0700
+++ b/arch/mips/pci/Makefile 2006-06-22 11:48:21.000000000 -0700
@@ -42,6 +42,8 @@
obj-$(CONFIG_MOMENCO_OCELOT_G) += fixup-ocelot-g.o pci-ocelot-g.o
obj-$(CONFIG_PMC_YOSEMITE) += fixup-yosemite.o ops-titan.o ops-titan-ht.o \
pci-yosemite.o
+obj-$(CONFIG_PMC_SEQUOIA) += fixup-sequoia.o ops-sequoia.o pci-sequoia.o
+
obj-$(CONFIG_SGI_IP27) += pci-ip27.o
obj-$(CONFIG_SGI_IP32) += fixup-ip32.o ops-mace.o pci-ip32.o
obj-$(CONFIG_SIBYTE_SB1250) += fixup-sb1250.o pci-sb1250.o
diff -Naur a/arch/mips/pci/ops-sequoia.c b/arch/mips/pci/ops-sequoia.c
--- a/arch/mips/pci/ops-sequoia.c 1969-12-31 16:00:00.000000000 -0800
+++ b/arch/mips/pci/ops-sequoia.c 2006-06-22 14:51:08.000000000 -0700
@@ -0,0 +1,187 @@
+/*
+ * Copyright 2006 PMC-Sierra
+ * Author: PMC Sierra Inc (thotakir@xxxxxxxxxxxxxx)
+ *
+ */
+
+#include <linux/config.h>
+#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 <asm/pmc_sequoia.h>
+
+
+void sequoia_pcibios_fixup_bus(struct pci_bus* c);
+
+
+/*
+ * Sequoia PCI Config Read Byte
+ */
+static int sequoia_pci_read_config(struct pci_bus *bus,
+ unsigned int devfn, int offset, int size, u32* val)
+{
+ int dev, busno, func;
+ uint32_t address_reg, data_reg;
+ uint32_t address, data = 0;
+
+ int local_busno = 0;
+
+ busno = bus->number;
+ dev = PCI_SLOT(devfn);
+ func = PCI_FUNC(devfn);
+
+ address_reg = RM9150_PCI_CONFIG_ADDR;
+ data_reg = RM9150_PCI_CONFIG_DATA;
+
+ address = (local_busno << 16) | (dev << 11) | (func << 8) |
+ (offset & 0xfc) | 0x80000000;
+
+ /* start the configuration cycle */
+ if (busno == 0)
+ SEQUOIA_PCI0_WRITE(address_reg, address);
+ else
+ SEQUOIA_PCI1_WRITE(address_reg, address);
+
+ /* read the data */
+ switch (size) {
+ case 1:
+
+ if (busno == 0)
+ {
+ data = SEQUOIA_PCI0_READ(data_reg);
+ *val = (data >> ((offset & 3) << 3)) & 0xff;
+ }
+ else
+ {
+ data = SEQUOIA_PCI1_READ(data_reg);
+ *val = (data >> ((offset & 3) << 3)) & 0xff;
+ }
+ break;
+
+ case 2:
+
+ if (busno == 0)
+ {
+ data = SEQUOIA_PCI0_READ(data_reg);
+ *val = (data >> ((offset & 3) << 3)) & 0xffff;
+ }
+ else
+ {
+ data = SEQUOIA_PCI1_READ(data_reg);
+ *val = (data >> ((offset & 3) << 3)) & 0xffff;
+ }
+ break;
+
+ case 4:
+ if (busno == 0)
+ *val = SEQUOIA_PCI0_READ(data_reg);
+ else
+ *val = SEQUOIA_PCI1_READ(data_reg);
+ break;
+ }
+
+ return PCIBIOS_SUCCESSFUL;
+}
+
+/*
+ * Sequoia PCI Config Byte Write
+ */
+static int sequoia_pci_write_config(struct pci_bus *bus,
+ unsigned int devfn, int offset, int size, u32 val)
+{
+ int dev, busno, func;
+ uint32_t address_reg, data_reg;
+ uint32_t address, data = 0;
+
+ int local_busno = 0;
+
+ busno = bus->number;
+ dev = PCI_SLOT(devfn);
+ func = PCI_FUNC(devfn);
+
+ address_reg = RM9150_PCI_CONFIG_ADDR;
+ data_reg = RM9150_PCI_CONFIG_DATA;
+
+ address = (local_busno << 16) | (dev << 11) | (func << 8) |
+ (offset & 0xfc) | 0x80000000;
+
+ /* start the configuration cycle */
+ if (busno == 0)
+ SEQUOIA_PCI0_WRITE(address_reg, address);
+ else
+ SEQUOIA_PCI1_WRITE(address_reg, address);
+
+ /* write the data */
+ switch (size) {
+ case 1:
+ if (busno == 0)
+ {
+ /* read the data first */
+ data = SEQUOIA_PCI0_READ(data_reg);
+ data = (data & ~(0xff << ((offset & 3) << 3))) |
+ (val << ((offset & 3) << 3));
+
+ /* write the data */
+ SEQUOIA_PCI0_WRITE(data_reg, data);
+ }
+ else
+ {
+ /* read the data first */
+ data = SEQUOIA_PCI1_READ(data_reg);
+ data = (data & ~(0xff << ((offset & 3) << 3))) |
+ (val << ((offset & 3) << 3));
+
+ /* write the data */
+ SEQUOIA_PCI1_WRITE(data_reg, data);
+ }
+ break;
+ case 2:
+ if (busno == 0)
+ {
+ /* read the data first */
+ data = SEQUOIA_PCI0_READ(data_reg);
+ data = (data & ~(0xffff << ((offset & 3) << 3))) |
+ (val << ((offset & 3) << 3));
+
+ /* write the data */
+ SEQUOIA_PCI0_WRITE(data_reg, data);
+ }
+ else
+ {
+ /* read the data first */
+ data = SEQUOIA_PCI1_READ(data_reg);
+ data = (data & ~(0xffff << ((offset & 3) << 3))) |
+ (val << ((offset & 3) << 3));
+
+ /* write the data */
+ SEQUOIA_PCI1_WRITE(data_reg, data);
+ }
+ break;
+ case 4:
+ if (busno == 0)
+ SEQUOIA_PCI0_WRITE(data_reg, val);
+ else
+ SEQUOIA_PCI1_WRITE(data_reg, val);
+ break;
+ }
+
+ return PCIBIOS_SUCCESSFUL;
+}
+
+/*
+ * Sequoia PCI structure
+ */
+struct pci_ops sequoia_pci_ops = {
+ sequoia_pci_read_config,
+ sequoia_pci_write_config,
+};
+
+struct pci_fixup pcibios_fixups[] = {
+ {0}
+};
diff -Naur a/arch/mips/pci/pci-sequoia.c b/arch/mips/pci/pci-sequoia.c
--- a/arch/mips/pci/pci-sequoia.c 1969-12-31 16:00:00.000000000 -0800
+++ b/arch/mips/pci/pci-sequoia.c 2006-06-22 11:48:21.000000000 -0700
@@ -0,0 +1,78 @@
+/*
+ * 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) 2004 by Ralf Baechle (ralf@xxxxxxxxxxxxxx)
+ */
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/pci.h>
+#include <asm/gt64240.h>
+#include <asm/pmc_sequoia.h>
+
+
+extern struct pci_ops sequoia_pci_ops;
+
+static struct resource py_mem_resource0 = {
+ "Sequoia PCI MEM", SEQUOIA_PCI0_MEM_BASE,
+ SEQUOIA_PCI0_MEM_BASE+SEQUOIA_PCI0_MEM_SIZE-1, IORESOURCE_MEM
+};
+
+static struct resource py_mem_resource1 = {
+ "Sequoia PCI MEM", SEQUOIA_PCI1_MEM_BASE,
+ SEQUOIA_PCI1_MEM_BASE+SEQUOIA_PCI1_MEM_SIZE-1, IORESOURCE_MEM
+};
+
+/*
+ * PMON really reserves 16MB of I/O port space but that's stupid, nothing
+ * needs that much since allocations are limited to 256 bytes per device
+ * anyway. So we just claim 64kB here.
+ */
+#define SEQUOIA_IO_SIZE 0x0000ffffUL
+
+static struct resource py_io_resource0 = {
+ "Sequoia IO MEM", SEQUOIA_PCI0_IO_BASE,
+ SEQUOIA_PCI0_IO_BASE + SEQUOIA_PCI0_IO_SIZE - 1, IORESOURCE_IO,
+};
+
+static struct resource py_io_resource1 = {
+ "Sequoia IO MEM", SEQUOIA_PCI1_IO_BASE,
+ SEQUOIA_PCI1_IO_BASE + SEQUOIA_PCI1_IO_SIZE - 1, IORESOURCE_IO,
+};
+
+static struct pci_controller py_controller0 = {
+ .pci_ops = &sequoia_pci_ops,
+ .mem_resource = &py_mem_resource0,
+ .mem_offset = 0x00000000UL,
+ .io_resource = &py_io_resource0,
+ .io_offset = 0x00000000UL
+};
+
+static struct pci_controller py_controller1 = {
+ .pci_ops = &sequoia_pci_ops,
+ .mem_resource = &py_mem_resource1,
+ .mem_offset = 0x00000000UL,
+ .io_resource = &py_io_resource1,
+ .io_offset = 0x00000000UL
+};
+
+static char ioremap_failed[] __initdata = "Could not ioremap I/O port range";
+
+static int __init pmc_sequoia_setup(void)
+{
+ unsigned long io_v_base;
+
+ set_io_port_base(0);
+
+ ioport_resource.end = SEQUOIA_PCI1_IO_BASE + SEQUOIA_PCI1_IO_SIZE - 1;
+
+ register_pci_controller(&py_controller0);
+ register_pci_controller(&py_controller1);
+
+ return 0;
+}
+
+arch_initcall(pmc_sequoia_setup);
+
