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/*
* 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);
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