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acrn-kernel/arch/sh/boards/mpc1211/setup.c

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/*
* linux/arch/sh/boards/mpc1211/setup.c
*
* Copyright (C) 2002 Saito.K & Jeanne, Fujii.Y
*
*/
#include <linux/init.h>
#include <linux/irq.h>
#include <linux/hdreg.h>
#include <linux/ide.h>
#include <linux/interrupt.h>
#include <linux/platform_device.h>
#include <asm/io.h>
#include <asm/machvec.h>
#include <asm/mpc1211/mpc1211.h>
#include <asm/mpc1211/pci.h>
#include <asm/mpc1211/m1543c.h>
/* ALI15X3 SMBus address offsets */
#define SMBHSTSTS (0 + 0x3100)
#define SMBHSTCNT (1 + 0x3100)
#define SMBHSTSTART (2 + 0x3100)
#define SMBHSTCMD (7 + 0x3100)
#define SMBHSTADD (3 + 0x3100)
#define SMBHSTDAT0 (4 + 0x3100)
#define SMBHSTDAT1 (5 + 0x3100)
#define SMBBLKDAT (6 + 0x3100)
/* Other settings */
#define MAX_TIMEOUT 500 /* times 1/100 sec */
/* ALI15X3 command constants */
#define ALI15X3_ABORT 0x04
#define ALI15X3_T_OUT 0x08
#define ALI15X3_QUICK 0x00
#define ALI15X3_BYTE 0x10
#define ALI15X3_BYTE_DATA 0x20
#define ALI15X3_WORD_DATA 0x30
#define ALI15X3_BLOCK_DATA 0x40
#define ALI15X3_BLOCK_CLR 0x80
/* ALI15X3 status register bits */
#define ALI15X3_STS_IDLE 0x04
#define ALI15X3_STS_BUSY 0x08
#define ALI15X3_STS_DONE 0x10
#define ALI15X3_STS_DEV 0x20 /* device error */
#define ALI15X3_STS_COLL 0x40 /* collision or no response */
#define ALI15X3_STS_TERM 0x80 /* terminated by abort */
#define ALI15X3_STS_ERR 0xE0 /* all the bad error bits */
static void __init pci_write_config(unsigned long busNo,
unsigned long devNo,
unsigned long fncNo,
unsigned long cnfAdd,
unsigned long cnfData)
{
ctrl_outl((0x80000000
+ ((busNo & 0xff) << 16)
+ ((devNo & 0x1f) << 11)
+ ((fncNo & 0x07) << 8)
+ (cnfAdd & 0xfc)), PCIPAR);
ctrl_outl(cnfData, PCIPDR);
}
/*
Initialize IRQ setting
*/
static unsigned char m_irq_mask = 0xfb;
static unsigned char s_irq_mask = 0xff;
static void disable_mpc1211_irq(unsigned int irq)
{
if( irq < 8) {
m_irq_mask |= (1 << irq);
outb(m_irq_mask,I8259_M_MR);
} else {
s_irq_mask |= (1 << (irq - 8));
outb(s_irq_mask,I8259_S_MR);
}
}
static void enable_mpc1211_irq(unsigned int irq)
{
if( irq < 8) {
m_irq_mask &= ~(1 << irq);
outb(m_irq_mask,I8259_M_MR);
} else {
s_irq_mask &= ~(1 << (irq - 8));
outb(s_irq_mask,I8259_S_MR);
}
}
static inline int mpc1211_irq_real(unsigned int irq)
{
int value;
int irqmask;
if ( irq < 8) {
irqmask = 1<<irq;
outb(0x0b,I8259_M_CR); /* ISR register */
value = inb(I8259_M_CR) & irqmask;
outb(0x0a,I8259_M_CR); /* back ro the IPR reg */
return value;
}
irqmask = 1<<(irq - 8);
outb(0x0b,I8259_S_CR); /* ISR register */
value = inb(I8259_S_CR) & irqmask;
outb(0x0a,I8259_S_CR); /* back ro the IPR reg */
return value;
}
static void mask_and_ack_mpc1211(unsigned int irq)
{
if(irq < 8) {
if(m_irq_mask & (1<<irq)){
if(!mpc1211_irq_real(irq)){
atomic_inc(&irq_err_count)
printk("spurious 8259A interrupt: IRQ %x\n",irq);
}
} else {
m_irq_mask |= (1<<irq);
}
inb(I8259_M_MR); /* DUMMY */
outb(m_irq_mask,I8259_M_MR); /* disable */
outb(0x60+irq,I8259_M_CR); /* EOI */
} else {
if(s_irq_mask & (1<<(irq - 8))){
if(!mpc1211_irq_real(irq)){
atomic_inc(&irq_err_count);
printk("spurious 8259A interrupt: IRQ %x\n",irq);
}
} else {
s_irq_mask |= (1<<(irq - 8));
}
inb(I8259_S_MR); /* DUMMY */
outb(s_irq_mask,I8259_S_MR); /* disable */
outb(0x60+(irq-8),I8259_S_CR); /* EOI */
outb(0x60+2,I8259_M_CR);
}
}
static void end_mpc1211_irq(unsigned int irq)
{
enable_mpc1211_irq(irq);
}
static unsigned int startup_mpc1211_irq(unsigned int irq)
{
enable_mpc1211_irq(irq);
return 0;
}
static void shutdown_mpc1211_irq(unsigned int irq)
{
disable_mpc1211_irq(irq);
}
static struct hw_interrupt_type mpc1211_irq_type = {
.typename = "MPC1211-IRQ",
.startup = startup_mpc1211_irq,
.shutdown = shutdown_mpc1211_irq,
.enable = enable_mpc1211_irq,
.disable = disable_mpc1211_irq,
.ack = mask_and_ack_mpc1211,
.end = end_mpc1211_irq
};
static void make_mpc1211_irq(unsigned int irq)
{
irq_desc[irq].chip = &mpc1211_irq_type;
irq_desc[irq].status = IRQ_DISABLED;
irq_desc[irq].action = 0;
irq_desc[irq].depth = 1;
disable_mpc1211_irq(irq);
}
int mpc1211_irq_demux(int irq)
{
unsigned int poll;
if( irq == 2 ) {
outb(0x0c,I8259_M_CR);
poll = inb(I8259_M_CR);
if(poll & 0x80) {
irq = (poll & 0x07);
}
if( irq == 2) {
outb(0x0c,I8259_S_CR);
poll = inb(I8259_S_CR);
irq = (poll & 0x07) + 8;
}
}
return irq;
}
static void __init init_mpc1211_IRQ(void)
{
int i;
/*
* Super I/O (Just mimic PC):
* 1: keyboard
* 3: serial 1
* 4: serial 0
* 5: printer
* 6: floppy
* 8: rtc
* 10: lan
* 12: mouse
* 14: ide0
* 15: ide1
*/
pci_write_config(0,0,0,0x54, 0xb0b0002d);
outb(0x11, I8259_M_CR); /* mater icw1 edge trigger */
outb(0x11, I8259_S_CR); /* slave icw1 edge trigger */
outb(0x20, I8259_M_MR); /* m icw2 base vec 0x08 */
outb(0x28, I8259_S_MR); /* s icw2 base vec 0x70 */
outb(0x04, I8259_M_MR); /* m icw3 slave irq2 */
outb(0x02, I8259_S_MR); /* s icw3 slave id */
outb(0x01, I8259_M_MR); /* m icw4 non buf normal eoi*/
outb(0x01, I8259_S_MR); /* s icw4 non buf normal eo1*/
outb(0xfb, I8259_M_MR); /* disable irq0--irq7 */
outb(0xff, I8259_S_MR); /* disable irq8--irq15 */
for ( i=0; i < 16; i++) {
if(i != 2) {
make_mpc1211_irq(i);
}
}
}
static void delay1000(void)
{
int i;
for (i=0; i<1000; i++)
ctrl_delay();
}
static int put_smb_blk(unsigned char *p, int address, int command, int no)
{
int temp;
int timeout;
int i;
outb(0xff, SMBHSTSTS);
temp = inb(SMBHSTSTS);
for (timeout = 0; (timeout < MAX_TIMEOUT) && !(temp & ALI15X3_STS_IDLE); timeout++) {
delay1000();
temp = inb(SMBHSTSTS);
}
if (timeout >= MAX_TIMEOUT){
return -1;
}
outb(((address & 0x7f) << 1), SMBHSTADD);
outb(0xc0, SMBHSTCNT);
outb(command & 0xff, SMBHSTCMD);
outb(no & 0x1f, SMBHSTDAT0);
for(i = 1; i <= no; i++) {
outb(*p++, SMBBLKDAT);
}
outb(0xff, SMBHSTSTART);
temp = inb(SMBHSTSTS);
for (timeout = 0; (timeout < MAX_TIMEOUT) && !(temp & (ALI15X3_STS_ERR | ALI15X3_STS_DONE)); timeout++) {
delay1000();
temp = inb(SMBHSTSTS);
}
if (timeout >= MAX_TIMEOUT) {
return -2;
}
if ( temp & ALI15X3_STS_ERR ){
return -3;
}
return 0;
}
static struct resource heartbeat_resources[] = {
[0] = {
.start = 0xa2000000,
.end = 0xa2000000,
.flags = IORESOURCE_MEM,
},
};
static struct platform_device heartbeat_device = {
.name = "heartbeat",
.id = -1,
.num_resources = ARRAY_SIZE(heartbeat_resources),
.resource = heartbeat_resources,
};
static struct platform_device *mpc1211_devices[] __initdata = {
&heartbeat_device,
};
static int __init mpc1211_devices_setup(void)
{
return platform_add_devices(mpc1211_devices,
ARRAY_SIZE(mpc1211_devices));
}
__initcall(mpc1211_devices_setup);
/* arch/sh/boards/mpc1211/rtc.c */
void mpc1211_time_init(void);
static void __init mpc1211_setup(char **cmdline_p)
{
unsigned char spd_buf[128];
__set_io_port_base(PA_PCI_IO);
pci_write_config(0,0,0,0x54, 0xb0b00000);
do {
outb(ALI15X3_ABORT, SMBHSTCNT);
spd_buf[0] = 0x0c;
spd_buf[1] = 0x43;
spd_buf[2] = 0x7f;
spd_buf[3] = 0x03;
spd_buf[4] = 0x00;
spd_buf[5] = 0x03;
spd_buf[6] = 0x00;
} while (put_smb_blk(spd_buf, 0x69, 0, 7) < 0);
board_time_init = mpc1211_time_init;
return 0;
}
/*
* The Machine Vector
*/
static struct sh_machine_vector mv_mpc1211 __initmv = {
.mv_name = "Interface MPC-1211(CTP/PCI/MPC-SH02)",
.mv_setup = mpc1211_setup,
.mv_nr_irqs = 48,
.mv_irq_demux = mpc1211_irq_demux,
.mv_init_irq = init_mpc1211_IRQ,
};
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