144 lines
3.8 KiB
C
144 lines
3.8 KiB
C
/*
|
|
* 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@linux-mips.org)
|
|
*/
|
|
|
|
#include <linux/types.h>
|
|
#include <linux/pci.h>
|
|
#include <asm/mv64340.h>
|
|
|
|
#include <linux/init.h>
|
|
|
|
/*
|
|
* We assume the address ranges have already been setup appropriately by
|
|
* the firmware. PMON in case of the Ocelot C does that.
|
|
*/
|
|
static struct resource mv_pci_io_mem0_resource = {
|
|
.name = "MV64340 PCI0 IO MEM",
|
|
.flags = IORESOURCE_IO
|
|
};
|
|
|
|
static struct resource mv_pci_mem0_resource = {
|
|
.name = "MV64340 PCI0 MEM",
|
|
.flags = IORESOURCE_MEM
|
|
};
|
|
|
|
static struct mv_pci_controller mv_bus0_controller = {
|
|
.pcic = {
|
|
.pci_ops = &mv_pci_ops,
|
|
.mem_resource = &mv_pci_mem0_resource,
|
|
.io_resource = &mv_pci_io_mem0_resource,
|
|
},
|
|
.config_addr = MV64340_PCI_0_CONFIG_ADDR,
|
|
.config_vreg = MV64340_PCI_0_CONFIG_DATA_VIRTUAL_REG,
|
|
};
|
|
|
|
static uint32_t mv_io_base, mv_io_size;
|
|
|
|
static void mv64340_pci0_init(void)
|
|
{
|
|
uint32_t mem0_base, mem0_size;
|
|
uint32_t io_base, io_size;
|
|
|
|
io_base = MV_READ(MV64340_PCI_0_IO_BASE_ADDR) << 16;
|
|
io_size = (MV_READ(MV64340_PCI_0_IO_SIZE) + 1) << 16;
|
|
mem0_base = MV_READ(MV64340_PCI_0_MEMORY0_BASE_ADDR) << 16;
|
|
mem0_size = (MV_READ(MV64340_PCI_0_MEMORY0_SIZE) + 1) << 16;
|
|
|
|
mv_pci_io_mem0_resource.start = 0;
|
|
mv_pci_io_mem0_resource.end = io_size - 1;
|
|
mv_pci_mem0_resource.start = mem0_base;
|
|
mv_pci_mem0_resource.end = mem0_base + mem0_size - 1;
|
|
mv_bus0_controller.pcic.mem_offset = mem0_base;
|
|
mv_bus0_controller.pcic.io_offset = 0;
|
|
|
|
ioport_resource.end = io_size - 1;
|
|
|
|
register_pci_controller(&mv_bus0_controller.pcic);
|
|
|
|
mv_io_base = io_base;
|
|
mv_io_size = io_size;
|
|
}
|
|
|
|
static struct resource mv_pci_io_mem1_resource = {
|
|
.name = "MV64340 PCI1 IO MEM",
|
|
.flags = IORESOURCE_IO
|
|
};
|
|
|
|
static struct resource mv_pci_mem1_resource = {
|
|
.name = "MV64340 PCI1 MEM",
|
|
.flags = IORESOURCE_MEM
|
|
};
|
|
|
|
static struct mv_pci_controller mv_bus1_controller = {
|
|
.pcic = {
|
|
.pci_ops = &mv_pci_ops,
|
|
.mem_resource = &mv_pci_mem1_resource,
|
|
.io_resource = &mv_pci_io_mem1_resource,
|
|
},
|
|
.config_addr = MV64340_PCI_1_CONFIG_ADDR,
|
|
.config_vreg = MV64340_PCI_1_CONFIG_DATA_VIRTUAL_REG,
|
|
};
|
|
|
|
static __init void mv64340_pci1_init(void)
|
|
{
|
|
uint32_t mem0_base, mem0_size;
|
|
uint32_t io_base, io_size;
|
|
|
|
io_base = MV_READ(MV64340_PCI_1_IO_BASE_ADDR) << 16;
|
|
io_size = (MV_READ(MV64340_PCI_1_IO_SIZE) + 1) << 16;
|
|
mem0_base = MV_READ(MV64340_PCI_1_MEMORY0_BASE_ADDR) << 16;
|
|
mem0_size = (MV_READ(MV64340_PCI_1_MEMORY0_SIZE) + 1) << 16;
|
|
|
|
/*
|
|
* Here we assume the I/O window of second bus to be contiguous with
|
|
* the first. A gap is no problem but would waste address space for
|
|
* remapping the port space.
|
|
*/
|
|
mv_pci_io_mem1_resource.start = mv_io_size;
|
|
mv_pci_io_mem1_resource.end = mv_io_size + io_size - 1;
|
|
mv_pci_mem1_resource.start = mem0_base;
|
|
mv_pci_mem1_resource.end = mem0_base + mem0_size - 1;
|
|
mv_bus1_controller.pcic.mem_offset = mem0_base;
|
|
mv_bus1_controller.pcic.io_offset = 0;
|
|
|
|
ioport_resource.end = io_base + io_size -mv_io_base - 1;
|
|
|
|
register_pci_controller(&mv_bus1_controller.pcic);
|
|
|
|
mv_io_size = io_base + io_size - mv_io_base;
|
|
}
|
|
|
|
static __init int __init ocelot_c_pci_init(void)
|
|
{
|
|
unsigned long io_v_base;
|
|
uint32_t enable;
|
|
|
|
enable = ~MV_READ(MV64340_BASE_ADDR_ENABLE);
|
|
|
|
/*
|
|
* We require at least one enabled I/O or PCI memory window or we
|
|
* will ignore this PCI bus. We ignore PCI windows 1, 2 and 3.
|
|
*/
|
|
if (enable & (0x01 << 9) || enable & (0x01 << 10))
|
|
mv64340_pci0_init();
|
|
|
|
if (enable & (0x01 << 14) || enable & (0x01 << 15))
|
|
mv64340_pci1_init();
|
|
|
|
if (mv_io_size) {
|
|
io_v_base = (unsigned long) ioremap(mv_io_base, mv_io_size);
|
|
if (!io_v_base)
|
|
panic("Could not ioremap I/O port range");
|
|
|
|
set_io_port_base(io_v_base);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
arch_initcall(ocelot_c_pci_init);
|