summaryrefslogtreecommitdiffstats
path: root/arch/mips/mips-boards/generic/pci.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/mips/mips-boards/generic/pci.c')
-rw-r--r--arch/mips/mips-boards/generic/pci.c163
1 files changed, 163 insertions, 0 deletions
diff --git a/arch/mips/mips-boards/generic/pci.c b/arch/mips/mips-boards/generic/pci.c
new file mode 100644
index 000000000000..92c34bda02ae
--- /dev/null
+++ b/arch/mips/mips-boards/generic/pci.c
@@ -0,0 +1,163 @@
+/*
+ * Carsten Langgaard, carstenl@mips.com
+ * Copyright (C) 1999, 2000 MIPS Technologies, Inc. All rights reserved.
+ *
+ * Copyright (C) 2004 by Ralf Baechle (ralf@linux-mips.org)
+ *
+ * This program is free software; you can distribute it and/or modify it
+ * under the terms of the GNU General Public License (Version 2) as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
+ *
+ * MIPS boards specific PCI support.
+ */
+#include <linux/config.h>
+#include <linux/types.h>
+#include <linux/pci.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+
+#include <asm/mips-boards/generic.h>
+#include <asm/gt64120.h>
+#include <asm/mips-boards/bonito64.h>
+#include <asm/mips-boards/msc01_pci.h>
+#ifdef CONFIG_MIPS_MALTA
+#include <asm/mips-boards/malta.h>
+#endif
+
+static struct resource bonito64_mem_resource = {
+ .name = "Bonito PCI MEM",
+ .start = 0x10000000UL,
+ .end = 0x1bffffffUL,
+ .flags = IORESOURCE_MEM,
+};
+
+static struct resource bonito64_io_resource = {
+ .name = "Bonito IO MEM",
+ .start = 0x00002000UL, /* avoid conflicts with YAMON allocated I/O addresses */
+ .end = 0x000fffffUL,
+ .flags = IORESOURCE_IO,
+};
+
+static struct resource gt64120_mem_resource = {
+ .name = "GT64120 PCI MEM",
+ .start = 0x10000000UL,
+ .end = 0x1bdfffffUL,
+ .flags = IORESOURCE_MEM,
+};
+
+static struct resource gt64120_io_resource = {
+ .name = "GT64120 IO MEM",
+#ifdef CONFIG_MIPS_ATLAS
+ .start = 0x18000000UL,
+ .end = 0x181fffffUL,
+#endif
+#ifdef CONFIG_MIPS_MALTA
+ .start = 0x00002000UL,
+ .end = 0x001fffffUL,
+#endif
+ .flags = IORESOURCE_IO,
+};
+
+static struct resource msc_mem_resource = {
+ .name = "MSC PCI MEM",
+ .start = 0x10000000UL,
+ .end = 0x1fffffffUL,
+ .flags = IORESOURCE_MEM,
+};
+
+static struct resource msc_io_resource = {
+ .name = "MSC IO MEM",
+ .start = 0x00002000UL,
+ .end = 0x007fffffUL,
+ .flags = IORESOURCE_IO,
+};
+
+extern struct pci_ops bonito64_pci_ops;
+extern struct pci_ops gt64120_pci_ops;
+extern struct pci_ops msc_pci_ops;
+
+static struct pci_controller bonito64_controller = {
+ .pci_ops = &bonito64_pci_ops,
+ .io_resource = &bonito64_io_resource,
+ .mem_resource = &bonito64_mem_resource,
+ .mem_offset = 0x10000000UL,
+ .io_offset = 0x00000000UL,
+};
+
+static struct pci_controller gt64120_controller = {
+ .pci_ops = &gt64120_pci_ops,
+ .io_resource = &gt64120_io_resource,
+ .mem_resource = &gt64120_mem_resource,
+ .mem_offset = 0x00000000UL,
+ .io_offset = 0x00000000UL,
+};
+
+static struct pci_controller msc_controller = {
+ .pci_ops = &msc_pci_ops,
+ .io_resource = &msc_io_resource,
+ .mem_resource = &msc_mem_resource,
+ .mem_offset = 0x10000000UL,
+ .io_offset = 0x00000000UL,
+};
+
+static int __init pcibios_init(void)
+{
+ struct pci_controller *controller;
+
+ switch (mips_revision_corid) {
+ case MIPS_REVISION_CORID_QED_RM5261:
+ case MIPS_REVISION_CORID_CORE_LV:
+ case MIPS_REVISION_CORID_CORE_FPGA:
+ case MIPS_REVISION_CORID_CORE_FPGAR2:
+ /*
+ * Due to a bug in the Galileo system controller, we need
+ * to setup the PCI BAR for the Galileo internal registers.
+ * This should be done in the bios/bootprom and will be
+ * fixed in a later revision of YAMON (the MIPS boards
+ * boot prom).
+ */
+ GT_WRITE(GT_PCI0_CFGADDR_OFS,
+ (0 << GT_PCI0_CFGADDR_BUSNUM_SHF) | /* Local bus */
+ (0 << GT_PCI0_CFGADDR_DEVNUM_SHF) | /* GT64120 dev */
+ (0 << GT_PCI0_CFGADDR_FUNCTNUM_SHF) | /* Function 0*/
+ ((0x20/4) << GT_PCI0_CFGADDR_REGNUM_SHF) | /* BAR 4*/
+ GT_PCI0_CFGADDR_CONFIGEN_BIT );
+
+ /* Perform the write */
+ GT_WRITE(GT_PCI0_CFGDATA_OFS, CPHYSADDR(MIPS_GT_BASE));
+
+ controller = &gt64120_controller;
+ break;
+
+ case MIPS_REVISION_CORID_BONITO64:
+ case MIPS_REVISION_CORID_CORE_20K:
+ case MIPS_REVISION_CORID_CORE_EMUL_BON:
+ controller = &bonito64_controller;
+ break;
+
+ case MIPS_REVISION_CORID_CORE_MSC:
+ case MIPS_REVISION_CORID_CORE_FPGA2:
+ case MIPS_REVISION_CORID_CORE_EMUL_MSC:
+ controller = &msc_controller;
+ break;
+ default:
+ return 1;
+ }
+
+ ioport_resource.end = controller->io_resource->end;
+
+ register_pci_controller (controller);
+
+ return 0;
+}
+
+early_initcall(pcibios_init);