hollalinux
/
linux-sg2042
mirror of https://github.com/sophgo/linux-riscv.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity
linux-sg2042/arch/arm/mach-ixp2000/enp2611.c

267 lines
6.9 KiB
C
Raw Blame History

/*
* arch/arm/mach-ixp2000/enp2611.c
*
* Radisys ENP-2611 support.
*
* Created 2004 by Lennert Buytenhek from the ixdp2x01 code. The
* original version carries the following notices:
*
* Original Author: Andrzej Mialkowski <andrzej.mialkowski@intel.com>
* Maintainer: Deepak Saxena <dsaxena@plexity.net>
*
* Copyright (C) 2002-2003 Intel Corp.
* Copyright (C) 2003-2004 MontaVista Software, Inc.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*/
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/mm.h>
#include <linux/sched.h>
#include <linux/interrupt.h>
#include <linux/bitops.h>
#include <linux/pci.h>
#include <linux/ioport.h>
#include <linux/slab.h>
#include <linux/delay.h>
#include <linux/serial.h>
#include <linux/tty.h>
#include <linux/serial_core.h>
#include <linux/platform_device.h>
#include <asm/io.h>
#include <asm/irq.h>
#include <asm/pgtable.h>
#include <asm/page.h>
#include <asm/system.h>
#include <asm/hardware.h>
#include <asm/mach-types.h>
#include <asm/mach/pci.h>
#include <asm/mach/map.h>
#include <asm/mach/irq.h>
#include <asm/mach/time.h>
#include <asm/mach/arch.h>
#include <asm/mach/flash.h>
/*************************************************************************
* ENP-2611 timer tick configuration
*************************************************************************/
static void __init enp2611_timer_init(void)
{
ixp2000_init_time(50 * 1000 * 1000);
}
static struct sys_timer enp2611_timer = {
.init = enp2611_timer_init,
.offset = ixp2000_gettimeoffset,
};
/*************************************************************************
* ENP-2611 I/O
*************************************************************************/
static struct map_desc enp2611_io_desc[] __initdata = {
{
.virtual = ENP2611_CALEB_VIRT_BASE,
.pfn = __phys_to_pfn(ENP2611_CALEB_PHYS_BASE),
.length = ENP2611_CALEB_SIZE,
.type = MT_DEVICE_IXP2000,
}, {
.virtual = ENP2611_PM3386_0_VIRT_BASE,
.pfn = __phys_to_pfn(ENP2611_PM3386_0_PHYS_BASE),
.length = ENP2611_PM3386_0_SIZE,
.type = MT_DEVICE_IXP2000,
}, {
.virtual = ENP2611_PM3386_1_VIRT_BASE,
.pfn = __phys_to_pfn(ENP2611_PM3386_1_PHYS_BASE),
.length = ENP2611_PM3386_1_SIZE,
.type = MT_DEVICE_IXP2000,
}
};
void __init enp2611_map_io(void)
{
ixp2000_map_io();
iotable_init(enp2611_io_desc, ARRAY_SIZE(enp2611_io_desc));
}
/*************************************************************************
* ENP-2611 PCI
*************************************************************************/
static int enp2611_pci_setup(int nr, struct pci_sys_data *sys)
{
sys->mem_offset = 0xe0000000;
ixp2000_pci_setup(nr, sys);
return 1;
}
static void __init enp2611_pci_preinit(void)
{
ixp2000_reg_write(IXP2000_PCI_ADDR_EXT, 0x00100000);
ixp2000_pci_preinit();
pcibios_setup("firmware");
}
static inline int enp2611_pci_valid_device(struct pci_bus *bus,
unsigned int devfn)
{
/* The 82559 ethernet controller appears at both PCI:1:0:0 and
* PCI:1:2:0, so let's pretend the second one isn't there.
*/
if (bus->number == 0x01 && devfn == 0x10)
return 0;
return 1;
}
static int enp2611_pci_read_config(struct pci_bus *bus, unsigned int devfn,
int where, int size, u32 *value)
{
if (enp2611_pci_valid_device(bus, devfn))
return ixp2000_pci_read_config(bus, devfn, where, size, value);
return PCIBIOS_DEVICE_NOT_FOUND;
}
static int enp2611_pci_write_config(struct pci_bus *bus, unsigned int devfn,
int where, int size, u32 value)
{
if (enp2611_pci_valid_device(bus, devfn))
return ixp2000_pci_write_config(bus, devfn, where, size, value);
return PCIBIOS_DEVICE_NOT_FOUND;
}
static struct pci_ops enp2611_pci_ops = {
.read = enp2611_pci_read_config,
.write = enp2611_pci_write_config
};
static struct pci_bus * __init enp2611_pci_scan_bus(int nr,
struct pci_sys_data *sys)
{
return pci_scan_bus(sys->busnr, &enp2611_pci_ops, sys);
}
static int __init enp2611_pci_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
{
int irq;
if (dev->bus->number == 0 && PCI_SLOT(dev->devfn) == 0) {
/* IXP2400. */
irq = IRQ_IXP2000_PCIA;
} else if (dev->bus->number == 0 && PCI_SLOT(dev->devfn) == 1) {
/* 21555 non-transparent bridge. */
irq = IRQ_IXP2000_PCIB;
} else if (dev->bus->number == 0 && PCI_SLOT(dev->devfn) == 4) {
/* PCI2050B transparent bridge. */
irq = -1;
} else if (dev->bus->number == 1 && PCI_SLOT(dev->devfn) == 0) {
/* 82559 ethernet. */
irq = IRQ_IXP2000_PCIA;
} else if (dev->bus->number == 1 && PCI_SLOT(dev->devfn) == 1) {
/* SPI-3 option board. */
irq = IRQ_IXP2000_PCIB;
} else {
printk(KERN_ERR "enp2611_pci_map_irq() called for unknown "
"device PCI:%d:%d:%d\n", dev->bus->number,
PCI_SLOT(dev->devfn), PCI_FUNC(dev->devfn));
irq = -1;
}
return irq;
}
struct hw_pci enp2611_pci __initdata = {
.nr_controllers = 1,
.setup = enp2611_pci_setup,
.preinit = enp2611_pci_preinit,
.scan = enp2611_pci_scan_bus,
.map_irq = enp2611_pci_map_irq,
};
int __init enp2611_pci_init(void)
{
if (machine_is_enp2611())
pci_common_init(&enp2611_pci);
return 0;
}
subsys_initcall(enp2611_pci_init);
/*************************************************************************
* ENP-2611 Machine Initialization
*************************************************************************/
static struct flash_platform_data enp2611_flash_platform_data = {
.map_name = "cfi_probe",
.width = 1,
};
static struct ixp2000_flash_data enp2611_flash_data = {
.platform_data = &enp2611_flash_platform_data,
.nr_banks = 1
};
static struct resource enp2611_flash_resource = {
.start = 0xc4000000,
.end = 0xc4000000 + 0x00ffffff,
.flags = IORESOURCE_MEM,
};
static struct platform_device enp2611_flash = {
.name = "IXP2000-Flash",
.id = 0,
.dev = {
.platform_data = &enp2611_flash_data,
},
.num_resources = 1,
.resource = &enp2611_flash_resource,
};
static struct ixp2000_i2c_pins enp2611_i2c_gpio_pins = {
.sda_pin = ENP2611_GPIO_SDA,
.scl_pin = ENP2611_GPIO_SCL,
};
static struct platform_device enp2611_i2c_controller = {
.name = "IXP2000-I2C",
.id = 0,
.dev = {
.platform_data = &enp2611_i2c_gpio_pins
},
.num_resources = 0
};
static struct platform_device *enp2611_devices[] __initdata = {
&enp2611_flash,
&enp2611_i2c_controller
};
static void __init enp2611_init_machine(void)
{
platform_add_devices(enp2611_devices, ARRAY_SIZE(enp2611_devices));
ixp2000_uart_init();
}
MACHINE_START(ENP2611, "Radisys ENP-2611 PCI network processor board")
/* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */
.phys_io = IXP2000_UART_PHYS_BASE,
.io_pg_offst = ((IXP2000_UART_VIRT_BASE) >> 18) & 0xfffc,
.boot_params = 0x00000100,
.map_io = enp2611_map_io,
.init_irq = ixp2000_init_irq,
.timer = &enp2611_timer,
.init_machine = enp2611_init_machine,
MACHINE_END
Reference in New Issue View Git Blame Copy Permalink