linux/arch/arm/mach-ixp2000/ixdp2x00.c
Russell King cdea460643 [ARM] Fix some section mismatch warnings
The following patch fixes these section mismatch warnings:

WARNING: arch/arm/mach-at91/built-in.o(.text+0xdf4): Section mismatch: reference to .init.data:dk_nand_partition (between 'nand_partitions' and 'at91_leds_event')
WARNING: arch/arm/mach-at91/built-in.o(.text+0xbdc): Section mismatch: reference to .init.data:ek_nand_partition (after 'nand_partitions')
WARNING: arch/arm/mach-at91/built-in.o(.text+0xbdc): Section mismatch: reference to .init.data:ek_nand_partition (between 'nand_partitions' and 'ads7843_pendown_state')
WARNING: arch/arm/mach-at91/built-in.o(.text+0xbdc): Section mismatch: reference to .init.data:ek_nand_partition (after 'nand_partitions')
WARNING: arch/arm/mach-at91/built-in.o(.text+0xc28): Section mismatch: reference to .init.data:kb9202_nand_partition (after 'nand_partitions')
WARNING: arch/arm/mach-footbridge/built-in.o(.text+0xaa4): Section mismatch: reference to .init.data:cats_pci (between 'cats_pci_init' and 'ebsa285_leds_event')WARNING: arch/arm/mach-ixp2000/built-in.o(.text+0xb54): Section mismatch: reference to .init.text:ixp2000_init_irq (between 'ixdp2x00_init_irq' and 'ixdp2x00_irq_handler')
WARNING: arch/arm/mach-ixp23xx/built-in.o(.text+0x670): Section mismatch: reference to .init.text:ixp23xx_pci_common_init (between 'ixp23xx_pci_slave_init' and 'ixp23xx_pci_scan_bus')
WARNING: arch/arm/mach-ixp23xx/built-in.o(.text+0x890): Section mismatch: reference to .init.text:ixp23xx_init_irq (between 'ixdp2351_init_irq' and 'roadrunner_pci_preinit')
WARNING: arch/arm/mach-ixp23xx/built-in.o(.text+0x9a8): Section mismatch: reference to .init.text:ixp23xx_pci_preinit (after 'roadrunner_pci_preinit')
WARNING: arch/arm/mach-imx/built-in.o(__ksymtab+0x80): Section mismatch: reference to .init.text:imx_set_mmc_info (between '__ksymtab_imx_set_mmc_info' and '__ksymtab_set_imx_fb_info')
WARNING: arch/arm/mach-imx/built-in.o(__ksymtab+0x88): Section mismatch: reference to .init.text:set_imx_fb_info (after '__ksymtab_set_imx_fb_info')
WARNING: arch/arm/mach-sa1100/built-in.o(.text+0x1930): Section mismatch: reference to .init.data:neponset_port_fns (between 'neponset_probe' and 'assabet_leds_event')
WARNING: drivers/built-in.o(.text+0x3f100): Section mismatch: reference to .init.text:ps2_clear_input (between 'ps2_probe' and 'ps2_cmd_aborted')
WARNING: drivers/built-in.o(.text+0x3f1c8): Section mismatch: reference to .init.text:ps2_clear_input (between 'ps2_probe' and 'ps2_cmd_aborted')
WARNING: drivers/built-in.o(.text+0x4f988): Section mismatch: reference to .init.text:ps2_clear_input (between 'ps2_probe' and 'ps2_cmd_aborted')
WARNING: drivers/built-in.o(.text+0x4fa50): Section mismatch: reference to .init.text:ps2_clear_input (between 'ps2_probe' and 'ps2_cmd_aborted')

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Acked-by: Lennert Buytenhek <buytenh@wantstofly.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-05-30 17:48:45 +01:00

310 lines
8.6 KiB
C

/*
* arch/arm/mach-ixp2000/ixdp2x00.c
*
* Code common to IXDP2400 and IXDP2800 platforms.
*
* Original Author: Naeem Afzal <naeem.m.afzal@intel.com>
* Maintainer: Deepak Saxena <dsaxena@plexity.net>
*
* Copyright (C) 2002 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/platform_device.h>
#include <linux/bitops.h>
#include <linux/pci.h>
#include <linux/ioport.h>
#include <linux/slab.h>
#include <linux/delay.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/flash.h>
#include <asm/mach/arch.h>
#include <asm/arch/gpio.h>
/*************************************************************************
* IXDP2x00 IRQ Initialization
*************************************************************************/
static volatile unsigned long *board_irq_mask;
static volatile unsigned long *board_irq_stat;
static unsigned long board_irq_count;
#ifdef CONFIG_ARCH_IXDP2400
/*
* Slowport configuration for accessing CPLD registers on IXDP2x00
*/
static struct slowport_cfg slowport_cpld_cfg = {
.CCR = SLOWPORT_CCR_DIV_2,
.WTC = 0x00000070,
.RTC = 0x00000070,
.PCR = SLOWPORT_MODE_FLASH,
.ADC = SLOWPORT_ADDR_WIDTH_24 | SLOWPORT_DATA_WIDTH_8
};
#endif
static void ixdp2x00_irq_mask(unsigned int irq)
{
unsigned long dummy;
static struct slowport_cfg old_cfg;
/*
* This is ugly in common code but really don't know
* of a better way to handle it. :(
*/
#ifdef CONFIG_ARCH_IXDP2400
if (machine_is_ixdp2400())
ixp2000_acquire_slowport(&slowport_cpld_cfg, &old_cfg);
#endif
dummy = *board_irq_mask;
dummy |= IXP2000_BOARD_IRQ_MASK(irq);
ixp2000_reg_wrb(board_irq_mask, dummy);
#ifdef CONFIG_ARCH_IXDP2400
if (machine_is_ixdp2400())
ixp2000_release_slowport(&old_cfg);
#endif
}
static void ixdp2x00_irq_unmask(unsigned int irq)
{
unsigned long dummy;
static struct slowport_cfg old_cfg;
#ifdef CONFIG_ARCH_IXDP2400
if (machine_is_ixdp2400())
ixp2000_acquire_slowport(&slowport_cpld_cfg, &old_cfg);
#endif
dummy = *board_irq_mask;
dummy &= ~IXP2000_BOARD_IRQ_MASK(irq);
ixp2000_reg_wrb(board_irq_mask, dummy);
if (machine_is_ixdp2400())
ixp2000_release_slowport(&old_cfg);
}
static void ixdp2x00_irq_handler(unsigned int irq, struct irq_desc *desc)
{
volatile u32 ex_interrupt = 0;
static struct slowport_cfg old_cfg;
int i;
desc->chip->mask(irq);
#ifdef CONFIG_ARCH_IXDP2400
if (machine_is_ixdp2400())
ixp2000_acquire_slowport(&slowport_cpld_cfg, &old_cfg);
#endif
ex_interrupt = *board_irq_stat & 0xff;
if (machine_is_ixdp2400())
ixp2000_release_slowport(&old_cfg);
if(!ex_interrupt) {
printk(KERN_ERR "Spurious IXDP2x00 CPLD interrupt!\n");
return;
}
for(i = 0; i < board_irq_count; i++) {
if(ex_interrupt & (1 << i)) {
struct irq_desc *cpld_desc;
int cpld_irq = IXP2000_BOARD_IRQ(0) + i;
cpld_desc = irq_desc + cpld_irq;
desc_handle_irq(cpld_irq, cpld_desc);
}
}
desc->chip->unmask(irq);
}
static struct irq_chip ixdp2x00_cpld_irq_chip = {
.ack = ixdp2x00_irq_mask,
.mask = ixdp2x00_irq_mask,
.unmask = ixdp2x00_irq_unmask
};
void __init ixdp2x00_init_irq(volatile unsigned long *stat_reg, volatile unsigned long *mask_reg, unsigned long nr_irqs)
{
unsigned int irq;
ixp2000_init_irq();
if (!ixdp2x00_master_npu())
return;
board_irq_stat = stat_reg;
board_irq_mask = mask_reg;
board_irq_count = nr_irqs;
*board_irq_mask = 0xffffffff;
for(irq = IXP2000_BOARD_IRQ(0); irq < IXP2000_BOARD_IRQ(board_irq_count); irq++) {
set_irq_chip(irq, &ixdp2x00_cpld_irq_chip);
set_irq_handler(irq, handle_level_irq);
set_irq_flags(irq, IRQF_VALID);
}
/* Hook into PCI interrupt */
set_irq_chained_handler(IRQ_IXP2000_PCIB, ixdp2x00_irq_handler);
}
/*************************************************************************
* IXDP2x00 memory map
*************************************************************************/
static struct map_desc ixdp2x00_io_desc __initdata = {
.virtual = IXDP2X00_VIRT_CPLD_BASE,
.pfn = __phys_to_pfn(IXDP2X00_PHYS_CPLD_BASE),
.length = IXDP2X00_CPLD_SIZE,
.type = MT_DEVICE
};
void __init ixdp2x00_map_io(void)
{
ixp2000_map_io();
iotable_init(&ixdp2x00_io_desc, 1);
}
/*************************************************************************
* IXDP2x00-common PCI init
*
* The IXDP2[48]00 has a horrid PCI bus layout. Basically the board
* contains two NPUs (ingress and egress) connected over PCI, both running
* instances of the kernel. So far so good. Peers on the PCI bus running
* Linux is a common design in telecom systems. The problem is that instead
* of all the devices being controlled by a single host, different
* devices are controlled by different NPUs on the same bus, leading to
* multiple hosts on the bus. The exact bus layout looks like:
*
* Bus 0
* Master NPU <-------------------+-------------------> Slave NPU
* |
* |
* P2P
* |
*
* Bus 1 |
* <--+------+---------+---------+------+-->
* | | | | |
* | | | | |
* ... Dev PMC Media Eth0 Eth1 ...
*
* The master controls all but Eth1, which is controlled by the
* slave. What this means is that the both the master and the slave
* have to scan the bus, but only one of them can enumerate the bus.
* In addition, after the bus is scanned, each kernel must remove
* the device(s) it does not control from the PCI dev list otherwise
* a driver on each NPU will try to manage it and we will have horrible
* conflicts. Oh..and the slave NPU needs to see the master NPU
* for Intel's drivers to work properly. Closed source drivers...
*
* The way we deal with this is fairly simple but ugly:
*
* 1) Let master scan and enumerate the bus completely.
* 2) Master deletes Eth1 from device list.
* 3) Slave scans bus and then deletes all but Eth1 (Eth0 on slave)
* from device list.
* 4) Find HW designers and LART them.
*
* The boards also do not do normal PCI IRQ routing, or any sort of
* sensical swizzling, so we just need to check where on the bus a
* device sits and figure out to which CPLD pin the interrupt is routed.
* See ixdp2[48]00.c files.
*
*************************************************************************/
void ixdp2x00_slave_pci_postinit(void)
{
struct pci_dev *dev;
/*
* Remove PMC device is there is one
*/
if((dev = pci_get_bus_and_slot(1, IXDP2X00_PMC_DEVFN))) {
pci_remove_bus_device(dev);
pci_dev_put(dev);
}
dev = pci_get_bus_and_slot(0, IXDP2X00_21555_DEVFN);
pci_remove_bus_device(dev);
pci_dev_put(dev);
}
/**************************************************************************
* IXDP2x00 Machine Setup
*************************************************************************/
static struct flash_platform_data ixdp2x00_platform_data = {
.map_name = "cfi_probe",
.width = 1,
};
static struct ixp2000_flash_data ixdp2x00_flash_data = {
.platform_data = &ixdp2x00_platform_data,
.nr_banks = 1
};
static struct resource ixdp2x00_flash_resource = {
.start = 0xc4000000,
.end = 0xc4000000 + 0x00ffffff,
.flags = IORESOURCE_MEM,
};
static struct platform_device ixdp2x00_flash = {
.name = "IXP2000-Flash",
.id = 0,
.dev = {
.platform_data = &ixdp2x00_flash_data,
},
.num_resources = 1,
.resource = &ixdp2x00_flash_resource,
};
static struct ixp2000_i2c_pins ixdp2x00_i2c_gpio_pins = {
.sda_pin = IXDP2X00_GPIO_SDA,
.scl_pin = IXDP2X00_GPIO_SCL,
};
static struct platform_device ixdp2x00_i2c_controller = {
.name = "IXP2000-I2C",
.id = 0,
.dev = {
.platform_data = &ixdp2x00_i2c_gpio_pins,
},
.num_resources = 0
};
static struct platform_device *ixdp2x00_devices[] __initdata = {
&ixdp2x00_flash,
&ixdp2x00_i2c_controller
};
void __init ixdp2x00_init_machine(void)
{
gpio_line_set(IXDP2X00_GPIO_I2C_ENABLE, 1);
gpio_line_config(IXDP2X00_GPIO_I2C_ENABLE, GPIO_OUT);
platform_add_devices(ixdp2x00_devices, ARRAY_SIZE(ixdp2x00_devices));
ixp2000_uart_init();
}