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/*
* linux/arch/arm/mach-clps7500/core.c
*
* Copyright (C) 1998 Russell King
* Copyright (C) 1999 Nexus Electronics Ltd
*
* Extra MM routines for CL7500 architecture
*/
#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/interrupt.h>
#include <linux/list.h>
#include <linux/sched.h>
#include <linux/init.h>
#include <linux/device.h>
#include <linux/serial_8250.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
#include <asm/mach/irq.h>
#include <asm/mach/time.h>
#include <asm/hardware.h>
#include <asm/hardware/iomd.h>
#include <asm/io.h>
#include <asm/irq.h>
#include <asm/mach-types.h>
unsigned int vram_size;
static void cl7500_ack_irq_a(unsigned int irq)
{
unsigned int val, mask;
mask = 1 << irq;
val = iomd_readb(IOMD_IRQMASKA);
iomd_writeb(val & ~mask, IOMD_IRQMASKA);
iomd_writeb(mask, IOMD_IRQCLRA);
}
static void cl7500_mask_irq_a(unsigned int irq)
{
unsigned int val, mask;
mask = 1 << irq;
val = iomd_readb(IOMD_IRQMASKA);
iomd_writeb(val & ~mask, IOMD_IRQMASKA);
}
static void cl7500_unmask_irq_a(unsigned int irq)
{
unsigned int val, mask;
mask = 1 << irq;
val = iomd_readb(IOMD_IRQMASKA);
iomd_writeb(val | mask, IOMD_IRQMASKA);
}
static struct irqchip clps7500_a_chip = {
.ack = cl7500_ack_irq_a,
.mask = cl7500_mask_irq_a,
.unmask = cl7500_unmask_irq_a,
};
static void cl7500_mask_irq_b(unsigned int irq)
{
unsigned int val, mask;
mask = 1 << (irq & 7);
val = iomd_readb(IOMD_IRQMASKB);
iomd_writeb(val & ~mask, IOMD_IRQMASKB);
}
static void cl7500_unmask_irq_b(unsigned int irq)
{
unsigned int val, mask;
mask = 1 << (irq & 7);
val = iomd_readb(IOMD_IRQMASKB);
iomd_writeb(val | mask, IOMD_IRQMASKB);
}
static struct irqchip clps7500_b_chip = {
.ack = cl7500_mask_irq_b,
.mask = cl7500_mask_irq_b,
.unmask = cl7500_unmask_irq_b,
};
static void cl7500_mask_irq_c(unsigned int irq)
{
unsigned int val, mask;
mask = 1 << (irq & 7);
val = iomd_readb(IOMD_IRQMASKC);
iomd_writeb(val & ~mask, IOMD_IRQMASKC);
}
static void cl7500_unmask_irq_c(unsigned int irq)
{
unsigned int val, mask;
mask = 1 << (irq & 7);
val = iomd_readb(IOMD_IRQMASKC);
iomd_writeb(val | mask, IOMD_IRQMASKC);
}
static struct irqchip clps7500_c_chip = {
.ack = cl7500_mask_irq_c,
.mask = cl7500_mask_irq_c,
.unmask = cl7500_unmask_irq_c,
};
static void cl7500_mask_irq_d(unsigned int irq)
{
unsigned int val, mask;
mask = 1 << (irq & 7);
val = iomd_readb(IOMD_IRQMASKD);
iomd_writeb(val & ~mask, IOMD_IRQMASKD);
}
static void cl7500_unmask_irq_d(unsigned int irq)
{
unsigned int val, mask;
mask = 1 << (irq & 7);
val = iomd_readb(IOMD_IRQMASKD);
iomd_writeb(val | mask, IOMD_IRQMASKD);
}
static struct irqchip clps7500_d_chip = {
.ack = cl7500_mask_irq_d,
.mask = cl7500_mask_irq_d,
.unmask = cl7500_unmask_irq_d,
};
static void cl7500_mask_irq_dma(unsigned int irq)
{
unsigned int val, mask;
mask = 1 << (irq & 7);
val = iomd_readb(IOMD_DMAMASK);
iomd_writeb(val & ~mask, IOMD_DMAMASK);
}
static void cl7500_unmask_irq_dma(unsigned int irq)
{
unsigned int val, mask;
mask = 1 << (irq & 7);
val = iomd_readb(IOMD_DMAMASK);
iomd_writeb(val | mask, IOMD_DMAMASK);
}
static struct irqchip clps7500_dma_chip = {
.ack = cl7500_mask_irq_dma,
.mask = cl7500_mask_irq_dma,
.unmask = cl7500_unmask_irq_dma,
};
static void cl7500_mask_irq_fiq(unsigned int irq)
{
unsigned int val, mask;
mask = 1 << (irq & 7);
val = iomd_readb(IOMD_FIQMASK);
iomd_writeb(val & ~mask, IOMD_FIQMASK);
}
static void cl7500_unmask_irq_fiq(unsigned int irq)
{
unsigned int val, mask;
mask = 1 << (irq & 7);
val = iomd_readb(IOMD_FIQMASK);
iomd_writeb(val | mask, IOMD_FIQMASK);
}
static struct irqchip clps7500_fiq_chip = {
.ack = cl7500_mask_irq_fiq,
.mask = cl7500_mask_irq_fiq,
.unmask = cl7500_unmask_irq_fiq,
};
static void cl7500_no_action(unsigned int irq)
{
}
static struct irqchip clps7500_no_chip = {
.ack = cl7500_no_action,
.mask = cl7500_no_action,
.unmask = cl7500_no_action,
};
static struct irqaction irq_isa = { no_action, 0, CPU_MASK_NONE, "isa", NULL, NULL };
static void __init clps7500_init_irq(void)
{
unsigned int irq, flags;
iomd_writeb(0, IOMD_IRQMASKA);
iomd_writeb(0, IOMD_IRQMASKB);
iomd_writeb(0, IOMD_FIQMASK);
iomd_writeb(0, IOMD_DMAMASK);
for (irq = 0; irq < NR_IRQS; irq++) {
flags = IRQF_VALID;
if (irq <= 6 || (irq >= 9 && irq <= 15) ||
(irq >= 48 && irq <= 55))
flags |= IRQF_PROBE;
switch (irq) {
case 0 ... 7:
set_irq_chip(irq, &clps7500_a_chip);
set_irq_handler(irq, do_level_IRQ);
set_irq_flags(irq, flags);
break;
case 8 ... 15:
set_irq_chip(irq, &clps7500_b_chip);
set_irq_handler(irq, do_level_IRQ);
set_irq_flags(irq, flags);
break;
case 16 ... 22:
set_irq_chip(irq, &clps7500_dma_chip);
set_irq_handler(irq, do_level_IRQ);
set_irq_flags(irq, flags);
break;
case 24 ... 31:
set_irq_chip(irq, &clps7500_c_chip);
set_irq_handler(irq, do_level_IRQ);
set_irq_flags(irq, flags);
break;
case 40 ... 47:
set_irq_chip(irq, &clps7500_d_chip);
set_irq_handler(irq, do_level_IRQ);
set_irq_flags(irq, flags);
break;
case 48 ... 55:
set_irq_chip(irq, &clps7500_no_chip);
set_irq_handler(irq, do_level_IRQ);
set_irq_flags(irq, flags);
break;
case 64 ... 72:
set_irq_chip(irq, &clps7500_fiq_chip);
set_irq_handler(irq, do_level_IRQ);
set_irq_flags(irq, flags);
break;
}
}
setup_irq(IRQ_ISA, &irq_isa);
}
static struct map_desc cl7500_io_desc[] __initdata = {
{ /* IO space */
.virtual = (unsigned long)IO_BASE,
.pfn = __phys_to_pfn(IO_START),
.length = IO_SIZE,
.type = MT_DEVICE
}, { /* ISA space */
.virtual = ISA_BASE,
.pfn = __phys_to_pfn(ISA_START),
.length = ISA_SIZE,
.type = MT_DEVICE
}, { /* Flash */
.virtual = FLASH_BASE,
.pfn = __phys_to_pfn(FLASH_START),
.length = FLASH_SIZE,
.type = MT_DEVICE
}, { /* LED */
.virtual = LED_BASE,
.pfn = __phys_to_pfn(LED_START),
.length = LED_SIZE,
.type = MT_DEVICE
}
};
static void __init clps7500_map_io(void)
{
iotable_init(cl7500_io_desc, ARRAY_SIZE(cl7500_io_desc));
}
extern void ioctime_init(void);
extern unsigned long ioc_timer_gettimeoffset(void);
static irqreturn_t
clps7500_timer_interrupt(int irq, void *dev_id, struct pt_regs *regs)
{
write_seqlock(&xtime_lock);
timer_tick(regs);
/* Why not using do_leds interface?? */
{
/* Twinkle the lights. */
static int count, state = 0xff00;
if (count-- == 0) {
state ^= 0x100;
count = 25;
*((volatile unsigned int *)LED_ADDRESS) = state;
}
}
write_sequnlock(&xtime_lock);
return IRQ_HANDLED;
}
static struct irqaction clps7500_timer_irq = {
.name = "CLPS7500 Timer Tick",
.flags = SA_INTERRUPT | SA_TIMER,
.handler = clps7500_timer_interrupt,
};
/*
* Set up timer interrupt.
*/
static void __init clps7500_timer_init(void)
{
ioctime_init();
setup_irq(IRQ_TIMER, &clps7500_timer_irq);
}
static struct sys_timer clps7500_timer = {
.init = clps7500_timer_init,
.offset = ioc_timer_gettimeoffset,
};
static struct plat_serial8250_port serial_platform_data[] = {
{
.mapbase = 0x03010fe0,
.irq = 10,
.uartclk = 1843200,
.regshift = 2,
.iotype = UPIO_MEM,
.flags = UPF_BOOT_AUTOCONF | UPF_IOREMAP | UPF_SKIP_TEST,
},
{
.mapbase = 0x03010be0,
.irq = 0,
.uartclk = 1843200,
.regshift = 2,
.iotype = UPIO_MEM,
.flags = UPF_BOOT_AUTOCONF | UPF_IOREMAP | UPF_SKIP_TEST,
},
{
.iobase = ISASLOT_IO + 0x2e8,
.irq = 41,
.uartclk = 1843200,
.regshift = 0,
.iotype = UPIO_PORT,
.flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
},
{
.iobase = ISASLOT_IO + 0x3e8,
.irq = 40,
.uartclk = 1843200,
.regshift = 0,
.iotype = UPIO_PORT,
.flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
},
{ },
};
static struct platform_device serial_device = {
.name = "serial8250",
.id = PLAT8250_DEV_PLATFORM,
.dev = {
.platform_data = serial_platform_data,
},
};
static void __init clps7500_init(void)
{
platform_device_register(&serial_device);
}
MACHINE_START(CLPS7500, "CL-PS7500")
/* Maintainer: Philip Blundell */
.phys_ram = 0x10000000,
.phys_io = 0x03000000,
.io_pg_offst = ((0xe0000000) >> 18) & 0xfffc,
.map_io = clps7500_map_io,
.init_irq = clps7500_init_irq,
.init_machine = clps7500_init,
.timer = &clps7500_timer,
MACHINE_END
|
