bd71ab88de
The conversion from IPR-IRQ to IRQ-chip resulted in the ipr data being allocated in a local variable in make_ipr_irq - breaking anything using IPR interrupts. This changes all of the callers of make_ipr_irq to allocate a static structure containing the IPR data which is then passed to make_ipr_irq. This removes the need for make_ipr_irq to allocate any additional space for the IPR information. Signed-off-by: Jamie Lenehan <lenehan@twibble.org> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
168 lines
3.6 KiB
C
168 lines
3.6 KiB
C
/*
|
|
* arch/sh/kernel/cpu/irq/pint.c - Interrupt handling for PINT-based IRQs.
|
|
*
|
|
* Copyright (C) 1999 Niibe Yutaka & Takeshi Yaegashi
|
|
* Copyright (C) 2000 Kazumoto Kojima
|
|
* Copyright (C) 2003 Takashi Kusuda <kusuda-takashi@hitachi-ul.co.jp>
|
|
*
|
|
* This file is subject to the terms and conditions of the GNU General Public
|
|
* License. See the file "COPYING" in the main directory of this archive
|
|
* for more details.
|
|
*/
|
|
|
|
#include <linux/init.h>
|
|
#include <linux/irq.h>
|
|
#include <linux/module.h>
|
|
|
|
#include <asm/system.h>
|
|
#include <asm/io.h>
|
|
#include <asm/machvec.h>
|
|
|
|
static unsigned char pint_map[256];
|
|
static unsigned long portcr_mask;
|
|
|
|
static void enable_pint_irq(unsigned int irq);
|
|
static void disable_pint_irq(unsigned int irq);
|
|
|
|
/* shutdown is same as "disable" */
|
|
#define shutdown_pint_irq disable_pint_irq
|
|
|
|
static void mask_and_ack_pint(unsigned int);
|
|
static void end_pint_irq(unsigned int irq);
|
|
|
|
static unsigned int startup_pint_irq(unsigned int irq)
|
|
{
|
|
enable_pint_irq(irq);
|
|
return 0; /* never anything pending */
|
|
}
|
|
|
|
static struct hw_interrupt_type pint_irq_type = {
|
|
.typename = "PINT-IRQ",
|
|
.startup = startup_pint_irq,
|
|
.shutdown = shutdown_pint_irq,
|
|
.enable = enable_pint_irq,
|
|
.disable = disable_pint_irq,
|
|
.ack = mask_and_ack_pint,
|
|
.end = end_pint_irq
|
|
};
|
|
|
|
static void disable_pint_irq(unsigned int irq)
|
|
{
|
|
unsigned long val;
|
|
|
|
val = ctrl_inw(INTC_INTER);
|
|
val &= ~(1 << (irq - PINT_IRQ_BASE));
|
|
ctrl_outw(val, INTC_INTER); /* disable PINTn */
|
|
portcr_mask &= ~(3 << (irq - PINT_IRQ_BASE)*2);
|
|
}
|
|
|
|
static void enable_pint_irq(unsigned int irq)
|
|
{
|
|
unsigned long val;
|
|
|
|
val = ctrl_inw(INTC_INTER);
|
|
val |= 1 << (irq - PINT_IRQ_BASE);
|
|
ctrl_outw(val, INTC_INTER); /* enable PINTn */
|
|
portcr_mask |= 3 << (irq - PINT_IRQ_BASE)*2;
|
|
}
|
|
|
|
static void mask_and_ack_pint(unsigned int irq)
|
|
{
|
|
disable_pint_irq(irq);
|
|
}
|
|
|
|
static void end_pint_irq(unsigned int irq)
|
|
{
|
|
if (!(irq_desc[irq].status & (IRQ_DISABLED|IRQ_INPROGRESS)))
|
|
enable_pint_irq(irq);
|
|
}
|
|
|
|
void make_pint_irq(unsigned int irq)
|
|
{
|
|
disable_irq_nosync(irq);
|
|
irq_desc[irq].chip = &pint_irq_type;
|
|
disable_pint_irq(irq);
|
|
}
|
|
|
|
static struct ipr_data pint_ipr_map[] = {
|
|
{ PINT0_IRQ, PINT0_IPR_ADDR, PINT0_IPR_POS, PINT0_PRIORITY },
|
|
{ PINT8_IRQ, PINT8_IPR_ADDR, PINT8_IPR_POS, PINT8_PRIORITY },
|
|
};
|
|
|
|
void __init init_IRQ_pint(void)
|
|
{
|
|
int i;
|
|
|
|
make_ipr_irq(pint_ipr_map, ARRAY_SIZE(pint_ipr_map));
|
|
|
|
enable_irq(PINT0_IRQ);
|
|
enable_irq(PINT8_IRQ);
|
|
|
|
for(i = 0; i < 16; i++)
|
|
make_pint_irq(PINT_IRQ_BASE + i);
|
|
|
|
for(i = 0; i < 256; i++) {
|
|
if (i & 1)
|
|
pint_map[i] = 0;
|
|
else if (i & 2)
|
|
pint_map[i] = 1;
|
|
else if (i & 4)
|
|
pint_map[i] = 2;
|
|
else if (i & 8)
|
|
pint_map[i] = 3;
|
|
else if (i & 0x10)
|
|
pint_map[i] = 4;
|
|
else if (i & 0x20)
|
|
pint_map[i] = 5;
|
|
else if (i & 0x40)
|
|
pint_map[i] = 6;
|
|
else if (i & 0x80)
|
|
pint_map[i] = 7;
|
|
}
|
|
}
|
|
|
|
int ipr_irq_demux(int irq)
|
|
{
|
|
unsigned long creg, dreg, d, sav;
|
|
|
|
if (irq == PINT0_IRQ) {
|
|
#if defined(CONFIG_CPU_SUBTYPE_SH7707)
|
|
creg = PORT_PACR;
|
|
dreg = PORT_PADR;
|
|
#else
|
|
creg = PORT_PCCR;
|
|
dreg = PORT_PCDR;
|
|
#endif
|
|
sav = ctrl_inw(creg);
|
|
ctrl_outw(sav | portcr_mask, creg);
|
|
d = (~ctrl_inb(dreg) ^ ctrl_inw(INTC_ICR2)) &
|
|
ctrl_inw(INTC_INTER) & 0xff;
|
|
ctrl_outw(sav, creg);
|
|
|
|
if (d == 0)
|
|
return irq;
|
|
|
|
return PINT_IRQ_BASE + pint_map[d];
|
|
} else if (irq == PINT8_IRQ) {
|
|
#if defined(CONFIG_CPU_SUBTYPE_SH7707)
|
|
creg = PORT_PBCR;
|
|
dreg = PORT_PBDR;
|
|
#else
|
|
creg = PORT_PFCR;
|
|
dreg = PORT_PFDR;
|
|
#endif
|
|
sav = ctrl_inw(creg);
|
|
ctrl_outw(sav | (portcr_mask >> 16), creg);
|
|
d = (~ctrl_inb(dreg) ^ (ctrl_inw(INTC_ICR2) >> 8)) &
|
|
(ctrl_inw(INTC_INTER) >> 8) & 0xff;
|
|
ctrl_outw(sav, creg);
|
|
|
|
if (d == 0)
|
|
return irq;
|
|
|
|
return PINT_IRQ_BASE + 8 + pint_map[d];
|
|
}
|
|
|
|
return irq;
|
|
}
|
|
|