forked from Minki/linux
a62c80e559
Since the ARM AMBA bus is used on MIPS as well as ARM, we need to make the bus available for other architectures to use. Move the AMBA include files from include/asm-arm/hardware/ to include/linux/amba/ Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
359 lines
8.7 KiB
C
359 lines
8.7 KiB
C
/*
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* linux/arch/arm/mach-integrator/integrator_ap.c
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*
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* Copyright (C) 2000-2003 Deep Blue Solutions Ltd
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <linux/types.h>
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/list.h>
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#include <linux/platform_device.h>
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#include <linux/slab.h>
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#include <linux/string.h>
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#include <linux/sysdev.h>
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#include <linux/amba/bus.h>
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#include <linux/amba/kmi.h>
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#include <asm/hardware.h>
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#include <asm/io.h>
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#include <asm/irq.h>
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#include <asm/setup.h>
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#include <asm/param.h> /* HZ */
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#include <asm/mach-types.h>
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#include <asm/arch/lm.h>
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#include <asm/mach/arch.h>
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#include <asm/mach/flash.h>
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#include <asm/mach/irq.h>
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#include <asm/mach/map.h>
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#include <asm/mach/time.h>
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#include "common.h"
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/*
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* All IO addresses are mapped onto VA 0xFFFx.xxxx, where x.xxxx
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* is the (PA >> 12).
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*
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* Setup a VA for the Integrator interrupt controller (for header #0,
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* just for now).
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*/
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#define VA_IC_BASE IO_ADDRESS(INTEGRATOR_IC_BASE)
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#define VA_SC_BASE IO_ADDRESS(INTEGRATOR_SC_BASE)
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#define VA_EBI_BASE IO_ADDRESS(INTEGRATOR_EBI_BASE)
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#define VA_CMIC_BASE IO_ADDRESS(INTEGRATOR_HDR_BASE) + INTEGRATOR_HDR_IC_OFFSET
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/*
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* Logical Physical
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* e8000000 40000000 PCI memory PHYS_PCI_MEM_BASE (max 512M)
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* ec000000 61000000 PCI config space PHYS_PCI_CONFIG_BASE (max 16M)
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* ed000000 62000000 PCI V3 regs PHYS_PCI_V3_BASE (max 64k)
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* ee000000 60000000 PCI IO PHYS_PCI_IO_BASE (max 16M)
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* ef000000 Cache flush
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* f1000000 10000000 Core module registers
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* f1100000 11000000 System controller registers
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* f1200000 12000000 EBI registers
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* f1300000 13000000 Counter/Timer
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* f1400000 14000000 Interrupt controller
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* f1600000 16000000 UART 0
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* f1700000 17000000 UART 1
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* f1a00000 1a000000 Debug LEDs
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* f1b00000 1b000000 GPIO
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*/
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static struct map_desc ap_io_desc[] __initdata = {
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{
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.virtual = IO_ADDRESS(INTEGRATOR_HDR_BASE),
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.pfn = __phys_to_pfn(INTEGRATOR_HDR_BASE),
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.length = SZ_4K,
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.type = MT_DEVICE
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}, {
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.virtual = IO_ADDRESS(INTEGRATOR_SC_BASE),
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.pfn = __phys_to_pfn(INTEGRATOR_SC_BASE),
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.length = SZ_4K,
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.type = MT_DEVICE
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}, {
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.virtual = IO_ADDRESS(INTEGRATOR_EBI_BASE),
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.pfn = __phys_to_pfn(INTEGRATOR_EBI_BASE),
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.length = SZ_4K,
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.type = MT_DEVICE
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}, {
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.virtual = IO_ADDRESS(INTEGRATOR_CT_BASE),
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.pfn = __phys_to_pfn(INTEGRATOR_CT_BASE),
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.length = SZ_4K,
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.type = MT_DEVICE
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}, {
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.virtual = IO_ADDRESS(INTEGRATOR_IC_BASE),
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.pfn = __phys_to_pfn(INTEGRATOR_IC_BASE),
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.length = SZ_4K,
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.type = MT_DEVICE
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}, {
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.virtual = IO_ADDRESS(INTEGRATOR_UART0_BASE),
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.pfn = __phys_to_pfn(INTEGRATOR_UART0_BASE),
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.length = SZ_4K,
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.type = MT_DEVICE
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}, {
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.virtual = IO_ADDRESS(INTEGRATOR_UART1_BASE),
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.pfn = __phys_to_pfn(INTEGRATOR_UART1_BASE),
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.length = SZ_4K,
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.type = MT_DEVICE
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}, {
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.virtual = IO_ADDRESS(INTEGRATOR_DBG_BASE),
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.pfn = __phys_to_pfn(INTEGRATOR_DBG_BASE),
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.length = SZ_4K,
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.type = MT_DEVICE
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}, {
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.virtual = IO_ADDRESS(INTEGRATOR_GPIO_BASE),
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.pfn = __phys_to_pfn(INTEGRATOR_GPIO_BASE),
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.length = SZ_4K,
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.type = MT_DEVICE
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}, {
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.virtual = PCI_MEMORY_VADDR,
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.pfn = __phys_to_pfn(PHYS_PCI_MEM_BASE),
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.length = SZ_16M,
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.type = MT_DEVICE
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}, {
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.virtual = PCI_CONFIG_VADDR,
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.pfn = __phys_to_pfn(PHYS_PCI_CONFIG_BASE),
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.length = SZ_16M,
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.type = MT_DEVICE
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}, {
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.virtual = PCI_V3_VADDR,
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.pfn = __phys_to_pfn(PHYS_PCI_V3_BASE),
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.length = SZ_64K,
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.type = MT_DEVICE
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}, {
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.virtual = PCI_IO_VADDR,
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.pfn = __phys_to_pfn(PHYS_PCI_IO_BASE),
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.length = SZ_64K,
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.type = MT_DEVICE
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}
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};
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static void __init ap_map_io(void)
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{
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iotable_init(ap_io_desc, ARRAY_SIZE(ap_io_desc));
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}
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#define INTEGRATOR_SC_VALID_INT 0x003fffff
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static void sc_mask_irq(unsigned int irq)
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{
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writel(1 << irq, VA_IC_BASE + IRQ_ENABLE_CLEAR);
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}
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static void sc_unmask_irq(unsigned int irq)
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{
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writel(1 << irq, VA_IC_BASE + IRQ_ENABLE_SET);
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}
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static struct irqchip sc_chip = {
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.ack = sc_mask_irq,
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.mask = sc_mask_irq,
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.unmask = sc_unmask_irq,
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};
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static void __init ap_init_irq(void)
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{
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unsigned int i;
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/* Disable all interrupts initially. */
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/* Do the core module ones */
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writel(-1, VA_CMIC_BASE + IRQ_ENABLE_CLEAR);
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/* do the header card stuff next */
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writel(-1, VA_IC_BASE + IRQ_ENABLE_CLEAR);
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writel(-1, VA_IC_BASE + FIQ_ENABLE_CLEAR);
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for (i = 0; i < NR_IRQS; i++) {
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if (((1 << i) & INTEGRATOR_SC_VALID_INT) != 0) {
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set_irq_chip(i, &sc_chip);
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set_irq_handler(i, do_level_IRQ);
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set_irq_flags(i, IRQF_VALID | IRQF_PROBE);
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}
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}
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}
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#ifdef CONFIG_PM
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static unsigned long ic_irq_enable;
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static int irq_suspend(struct sys_device *dev, pm_message_t state)
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{
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ic_irq_enable = readl(VA_IC_BASE + IRQ_ENABLE);
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return 0;
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}
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static int irq_resume(struct sys_device *dev)
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{
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/* disable all irq sources */
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writel(-1, VA_CMIC_BASE + IRQ_ENABLE_CLEAR);
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writel(-1, VA_IC_BASE + IRQ_ENABLE_CLEAR);
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writel(-1, VA_IC_BASE + FIQ_ENABLE_CLEAR);
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writel(ic_irq_enable, VA_IC_BASE + IRQ_ENABLE_SET);
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return 0;
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}
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#else
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#define irq_suspend NULL
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#define irq_resume NULL
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#endif
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static struct sysdev_class irq_class = {
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set_kset_name("irq"),
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.suspend = irq_suspend,
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.resume = irq_resume,
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};
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static struct sys_device irq_device = {
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.id = 0,
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.cls = &irq_class,
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};
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static int __init irq_init_sysfs(void)
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{
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int ret = sysdev_class_register(&irq_class);
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if (ret == 0)
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ret = sysdev_register(&irq_device);
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return ret;
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}
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device_initcall(irq_init_sysfs);
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/*
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* Flash handling.
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*/
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#define SC_CTRLC (VA_SC_BASE + INTEGRATOR_SC_CTRLC_OFFSET)
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#define SC_CTRLS (VA_SC_BASE + INTEGRATOR_SC_CTRLS_OFFSET)
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#define EBI_CSR1 (VA_EBI_BASE + INTEGRATOR_EBI_CSR1_OFFSET)
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#define EBI_LOCK (VA_EBI_BASE + INTEGRATOR_EBI_LOCK_OFFSET)
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static int ap_flash_init(void)
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{
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u32 tmp;
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writel(INTEGRATOR_SC_CTRL_nFLVPPEN | INTEGRATOR_SC_CTRL_nFLWP, SC_CTRLC);
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tmp = readl(EBI_CSR1) | INTEGRATOR_EBI_WRITE_ENABLE;
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writel(tmp, EBI_CSR1);
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if (!(readl(EBI_CSR1) & INTEGRATOR_EBI_WRITE_ENABLE)) {
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writel(0xa05f, EBI_LOCK);
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writel(tmp, EBI_CSR1);
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writel(0, EBI_LOCK);
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}
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return 0;
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}
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static void ap_flash_exit(void)
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{
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u32 tmp;
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writel(INTEGRATOR_SC_CTRL_nFLVPPEN | INTEGRATOR_SC_CTRL_nFLWP, SC_CTRLC);
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tmp = readl(EBI_CSR1) & ~INTEGRATOR_EBI_WRITE_ENABLE;
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writel(tmp, EBI_CSR1);
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if (readl(EBI_CSR1) & INTEGRATOR_EBI_WRITE_ENABLE) {
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writel(0xa05f, EBI_LOCK);
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writel(tmp, EBI_CSR1);
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writel(0, EBI_LOCK);
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}
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}
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static void ap_flash_set_vpp(int on)
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{
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unsigned long reg = on ? SC_CTRLS : SC_CTRLC;
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writel(INTEGRATOR_SC_CTRL_nFLVPPEN, reg);
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}
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static struct flash_platform_data ap_flash_data = {
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.map_name = "cfi_probe",
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.width = 4,
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.init = ap_flash_init,
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.exit = ap_flash_exit,
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.set_vpp = ap_flash_set_vpp,
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};
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static struct resource cfi_flash_resource = {
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.start = INTEGRATOR_FLASH_BASE,
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.end = INTEGRATOR_FLASH_BASE + INTEGRATOR_FLASH_SIZE - 1,
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.flags = IORESOURCE_MEM,
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};
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static struct platform_device cfi_flash_device = {
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.name = "armflash",
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.id = 0,
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.dev = {
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.platform_data = &ap_flash_data,
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},
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.num_resources = 1,
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.resource = &cfi_flash_resource,
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};
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static void __init ap_init(void)
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{
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unsigned long sc_dec;
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int i;
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platform_device_register(&cfi_flash_device);
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sc_dec = readl(VA_SC_BASE + INTEGRATOR_SC_DEC_OFFSET);
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for (i = 0; i < 4; i++) {
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struct lm_device *lmdev;
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if ((sc_dec & (16 << i)) == 0)
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continue;
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lmdev = kmalloc(sizeof(struct lm_device), GFP_KERNEL);
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if (!lmdev)
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continue;
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memset(lmdev, 0, sizeof(struct lm_device));
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lmdev->resource.start = 0xc0000000 + 0x10000000 * i;
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lmdev->resource.end = lmdev->resource.start + 0x0fffffff;
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lmdev->resource.flags = IORESOURCE_MEM;
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lmdev->irq = IRQ_AP_EXPINT0 + i;
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lmdev->id = i;
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lm_device_register(lmdev);
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}
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}
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static void __init ap_init_timer(void)
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{
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integrator_time_init(1000000 * TICKS_PER_uSEC / HZ, 0);
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}
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static struct sys_timer ap_timer = {
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.init = ap_init_timer,
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.offset = integrator_gettimeoffset,
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};
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MACHINE_START(INTEGRATOR, "ARM-Integrator")
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/* Maintainer: ARM Ltd/Deep Blue Solutions Ltd */
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.phys_ram = 0x00000000,
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.phys_io = 0x16000000,
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.io_pg_offst = ((0xf1600000) >> 18) & 0xfffc,
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.boot_params = 0x00000100,
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.map_io = ap_map_io,
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.init_irq = ap_init_irq,
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.timer = &ap_timer,
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.init_machine = ap_init,
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MACHINE_END
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