dect
/
linux-2.6
Archived
13
0
Fork 0
Code Releases Activity

ARM: at91: make aic soc independent 

on all at91 have the Advanced Interrupt Controller starts at address
0xfffff000

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
This commit is contained in:
Jean-Christophe PLAGNIOL-VILLARD 2011-11-03 01:12:50 +08:00
parent 13079a7333
commit be6d432172
14 changed files with 67 additions and 50 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

48
arch/arm/mach-at91/include/mach/at91_aic.h
View File

@ -16,7 +16,19 @@
#ifndef AT91_AIC_H
#define AT91_AIC_H
#define AT91_AIC_SMR(n) (AT91_AIC + ((n) * 4)) /* Source Mode Registers 0-31 */
#ifndef __ASSEMBLY__
extern void __iomem *at91_aic_base;
#define at91_aic_read(field) \
__raw_readl(at91_aic_base + field)
#define at91_aic_write(field, value) \
__raw_writel(value, at91_aic_base + field);
#else
.extern at91_aic_base
#endif
#define AT91_AIC_SMR(n) ((n) * 4) /* Source Mode Registers 0-31 */
#define AT91_AIC_PRIOR (7 << 0) /* Priority Level */
#define AT91_AIC_SRCTYPE (3 << 5) /* Interrupt Source Type */
#define AT91_AIC_SRCTYPE_LOW (0 << 5)
@ -24,30 +36,30 @@
#define AT91_AIC_SRCTYPE_HIGH (2 << 5)
#define AT91_AIC_SRCTYPE_RISING (3 << 5)
#define AT91_AIC_SVR(n) (AT91_AIC + 0x80 + ((n) * 4)) /* Source Vector Registers 0-31 */
#define AT91_AIC_IVR (AT91_AIC + 0x100) /* Interrupt Vector Register */
#define AT91_AIC_FVR (AT91_AIC + 0x104) /* Fast Interrupt Vector Register */
#define AT91_AIC_ISR (AT91_AIC + 0x108) /* Interrupt Status Register */
#define AT91_AIC_SVR(n) (0x80 + ((n) * 4)) /* Source Vector Registers 0-31 */
#define AT91_AIC_IVR 0x100 /* Interrupt Vector Register */
#define AT91_AIC_FVR 0x104 /* Fast Interrupt Vector Register */
#define AT91_AIC_ISR 0x108 /* Interrupt Status Register */
#define AT91_AIC_IRQID (0x1f << 0) /* Current Interrupt Identifier */
#define AT91_AIC_IPR (AT91_AIC + 0x10c) /* Interrupt Pending Register */
#define AT91_AIC_IMR (AT91_AIC + 0x110) /* Interrupt Mask Register */
#define AT91_AIC_CISR (AT91_AIC + 0x114) /* Core Interrupt Status Register */
#define AT91_AIC_IPR 0x10c /* Interrupt Pending Register */
#define AT91_AIC_IMR 0x110 /* Interrupt Mask Register */
#define AT91_AIC_CISR 0x114 /* Core Interrupt Status Register */
#define AT91_AIC_NFIQ (1 << 0) /* nFIQ Status */
#define AT91_AIC_NIRQ (1 << 1) /* nIRQ Status */
#define AT91_AIC_IECR (AT91_AIC + 0x120) /* Interrupt Enable Command Register */
#define AT91_AIC_IDCR (AT91_AIC + 0x124) /* Interrupt Disable Command Register */
#define AT91_AIC_ICCR (AT91_AIC + 0x128) /* Interrupt Clear Command Register */
#define AT91_AIC_ISCR (AT91_AIC + 0x12c) /* Interrupt Set Command Register */
#define AT91_AIC_EOICR (AT91_AIC + 0x130) /* End of Interrupt Command Register */
#define AT91_AIC_SPU (AT91_AIC + 0x134) /* Spurious Interrupt Vector Register */
#define AT91_AIC_DCR (AT91_AIC + 0x138) /* Debug Control Register */
#define AT91_AIC_IECR 0x120 /* Interrupt Enable Command Register */
#define AT91_AIC_IDCR 0x124 /* Interrupt Disable Command Register */
#define AT91_AIC_ICCR 0x128 /* Interrupt Clear Command Register */
#define AT91_AIC_ISCR 0x12c /* Interrupt Set Command Register */
#define AT91_AIC_EOICR 0x130 /* End of Interrupt Command Register */
#define AT91_AIC_SPU 0x134 /* Spurious Interrupt Vector Register */
#define AT91_AIC_DCR 0x138 /* Debug Control Register */
#define AT91_AIC_DCR_PROT (1 << 0) /* Protection Mode */
#define AT91_AIC_DCR_GMSK (1 << 1) /* General Mask */
#define AT91_AIC_FFER (AT91_AIC + 0x140) /* Fast Forcing Enable Register [SAM9 only] */
#define AT91_AIC_FFDR (AT91_AIC + 0x144) /* Fast Forcing Disable Register [SAM9 only] */
#define AT91_AIC_FFSR (AT91_AIC + 0x148) /* Fast Forcing Status Register [SAM9 only] */
#define AT91_AIC_FFER 0x140 /* Fast Forcing Enable Register [SAM9 only] */
#define AT91_AIC_FFDR 0x144 /* Fast Forcing Disable Register [SAM9 only] */
#define AT91_AIC_FFSR 0x148 /* Fast Forcing Status Register [SAM9 only] */
#endif

1
arch/arm/mach-at91/include/mach/at91cap9.h
View File

@ -82,7 +82,6 @@
#define AT91_BCRAMC (0xffffe400 - AT91_BASE_SYS)
#define AT91_DDRSDRC0 (0xffffe600 - AT91_BASE_SYS)
#define AT91_MATRIX (0xffffea00 - AT91_BASE_SYS)
#define AT91_AIC (0xfffff000 - AT91_BASE_SYS)
#define AT91_PMC (0xfffffc00 - AT91_BASE_SYS)
#define AT91_RSTC (0xfffffd00 - AT91_BASE_SYS)
#define AT91_GPBR (cpu_is_at91cap9_revB() ? \

1
arch/arm/mach-at91/include/mach/at91rm9200.h
View File

@ -79,7 +79,6 @@
/*
* System Peripherals (offset from AT91_BASE_SYS)
*/
#define AT91_AIC (0xfffff000 - AT91_BASE_SYS) /* Advanced Interrupt Controller */
#define AT91_PMC (0xfffffc00 - AT91_BASE_SYS) /* Power Management Controller */
#define AT91_ST (0xfffffd00 - AT91_BASE_SYS) /* System Timer */
#define AT91_RTC (0xfffffe00 - AT91_BASE_SYS) /* Real-Time Clock */

1
arch/arm/mach-at91/include/mach/at91sam9260.h
View File

@ -82,7 +82,6 @@
*/
#define AT91_SDRAMC0 (0xffffea00 - AT91_BASE_SYS)
#define AT91_MATRIX (0xffffee00 - AT91_BASE_SYS)
#define AT91_AIC (0xfffff000 - AT91_BASE_SYS)
#define AT91_PMC (0xfffffc00 - AT91_BASE_SYS)
#define AT91_RSTC (0xfffffd00 - AT91_BASE_SYS)
#define AT91_GPBR (0xfffffd50 - AT91_BASE_SYS)

1
arch/arm/mach-at91/include/mach/at91sam9261.h
View File

@ -67,7 +67,6 @@
*/
#define AT91_SDRAMC0 (0xffffea00 - AT91_BASE_SYS)
#define AT91_MATRIX (0xffffee00 - AT91_BASE_SYS)
#define AT91_AIC (0xfffff000 - AT91_BASE_SYS)
#define AT91_PMC (0xfffffc00 - AT91_BASE_SYS)
#define AT91_RSTC (0xfffffd00 - AT91_BASE_SYS)
#define AT91_GPBR (0xfffffd50 - AT91_BASE_SYS)

1
arch/arm/mach-at91/include/mach/at91sam9263.h
View File

@ -77,7 +77,6 @@
#define AT91_SDRAMC0 (0xffffe200 - AT91_BASE_SYS)
#define AT91_SDRAMC1 (0xffffe800 - AT91_BASE_SYS)
#define AT91_MATRIX (0xffffec00 - AT91_BASE_SYS)
#define AT91_AIC (0xfffff000 - AT91_BASE_SYS)
#define AT91_PMC (0xfffffc00 - AT91_BASE_SYS)
#define AT91_RSTC (0xfffffd00 - AT91_BASE_SYS)
#define AT91_GPBR (0xfffffd60 - AT91_BASE_SYS)

1
arch/arm/mach-at91/include/mach/at91sam9g45.h
View File

@ -89,7 +89,6 @@
#define AT91_DDRSDRC1 (0xffffe400 - AT91_BASE_SYS)
#define AT91_DDRSDRC0 (0xffffe600 - AT91_BASE_SYS)
#define AT91_MATRIX (0xffffea00 - AT91_BASE_SYS)
#define AT91_AIC (0xfffff000 - AT91_BASE_SYS)
#define AT91_PMC (0xfffffc00 - AT91_BASE_SYS)
#define AT91_RSTC (0xfffffd00 - AT91_BASE_SYS)
#define AT91_GPBR (0xfffffd60 - AT91_BASE_SYS)

1
arch/arm/mach-at91/include/mach/at91sam9rl.h
View File

@ -71,7 +71,6 @@
*/
#define AT91_SDRAMC0 (0xffffea00 - AT91_BASE_SYS)
#define AT91_MATRIX (0xffffee00 - AT91_BASE_SYS)
#define AT91_AIC (0xfffff000 - AT91_BASE_SYS)
#define AT91_PMC (0xfffffc00 - AT91_BASE_SYS)
#define AT91_RSTC (0xfffffd00 - AT91_BASE_SYS)
#define AT91_SCKCR (0xfffffd50 - AT91_BASE_SYS)

1
arch/arm/mach-at91/include/mach/at91x40.h
View File

@ -40,7 +40,6 @@
#define AT91_PIOA (0xffff0000 - AT91_BASE_SYS) /* PIO Controller A */
#define AT91_PS (0xffff4000 - AT91_BASE_SYS) /* Power Save */
#define AT91_WD (0xffff8000 - AT91_BASE_SYS) /* Watchdog Timer */
#define AT91_AIC (0xfffff000 - AT91_BASE_SYS) /* Advanced Interrupt Controller */
/*
* The AT91x40 series doesn't have a debug unit like the other AT91 parts.

11
arch/arm/mach-at91/include/mach/entry-macro.S
View File

@ -17,16 +17,17 @@
.endm
.macro get_irqnr_preamble, base, tmp
ldr \base, =(AT91_VA_BASE_SYS + AT91_AIC) @ base virtual address of AIC peripheral
ldr \base, =at91_aic_base @ base virtual address of AIC peripheral
ldr \base, [\base]
.endm
.macro arch_ret_to_user, tmp1, tmp2
.endm
.macro get_irqnr_and_base, irqnr, irqstat, base, tmp
ldr \irqnr, [\base, #(AT91_AIC_IVR - AT91_AIC)] @ read IRQ vector register: de-asserts nIRQ to processor (and clears interrupt)
ldr \irqstat, [\base, #(AT91_AIC_ISR - AT91_AIC)] @ read interrupt source number
teq \irqstat, #0 @ ISR is 0 when no current interrupt, or spurious interrupt
streq \tmp, [\base, #(AT91_AIC_EOICR - AT91_AIC)] @ not going to be handled further, then ACK it now.
ldr \irqnr, [\base, #AT91_AIC_IVR] @ read IRQ vector register: de-asserts nIRQ to processor (and clears interrupt)
ldr \irqstat, [\base, #AT91_AIC_ISR] @ read interrupt source number
teq \irqstat, #0 @ ISR is 0 when no current interrupt, or spurious interrupt
streq \tmp, [\base, #AT91_AIC_EOICR] @ not going to be handled further, then ACK it now.
.endm

6
arch/arm/mach-at91/include/mach/hardware.h
View File

@ -57,6 +57,12 @@
#define AT91_BASE_SYS 0xffffc000
#endif
/*
* On all at91 have the Advanced Interrupt Controller starts at address
* 0xfffff000
*/
#define AT91_AIC 0xfffff000
/*
* Peripheral identifiers/interrupts.
*/

2
arch/arm/mach-at91/include/mach/irqs.h
View File

@ -31,7 +31,7 @@
* Acknowledge interrupt with AIC after interrupt has been handled.
* (by kernel/irq.c)
*/
#define irq_finish(irq) do { at91_sys_write(AT91_AIC_EOICR, 0); } while (0)
#define irq_finish(irq) do { at91_aic_write(AT91_AIC_EOICR, 0); } while (0)
/*

38
arch/arm/mach-at91/irq.c
View File

@ -33,17 +33,18 @@
#include <asm/mach/irq.h>
#include <asm/mach/map.h>
void __iomem *at91_aic_base;
static void at91_aic_mask_irq(struct irq_data *d)
{
/* Disable interrupt on AIC */
at91_sys_write(AT91_AIC_IDCR, 1 << d->irq);
at91_aic_write(AT91_AIC_IDCR, 1 << d->irq);
}
static void at91_aic_unmask_irq(struct irq_data *d)
{
/* Enable interrupt on AIC */
at91_sys_write(AT91_AIC_IECR, 1 << d->irq);
at91_aic_write(AT91_AIC_IECR, 1 << d->irq);
}
unsigned int at91_extern_irq;
@ -77,8 +78,8 @@ static int at91_aic_set_type(struct irq_data *d, unsigned type)
return -EINVAL;
}
smr = at91_sys_read(AT91_AIC_SMR(d->irq)) & ~AT91_AIC_SRCTYPE;
at91_sys_write(AT91_AIC_SMR(d->irq), smr | srctype);
smr = at91_aic_read(AT91_AIC_SMR(d->irq)) & ~AT91_AIC_SRCTYPE;
at91_aic_write(AT91_AIC_SMR(d->irq), smr | srctype);
return 0;
}
@ -102,15 +103,15 @@ static int at91_aic_set_wake(struct irq_data *d, unsigned value)
void at91_irq_suspend(void)
{
backups = at91_sys_read(AT91_AIC_IMR);
at91_sys_write(AT91_AIC_IDCR, backups);
at91_sys_write(AT91_AIC_IECR, wakeups);
backups = at91_aic_read(AT91_AIC_IMR);
at91_aic_write(AT91_AIC_IDCR, backups);
at91_aic_write(AT91_AIC_IECR, wakeups);
}
void at91_irq_resume(void)
{
at91_sys_write(AT91_AIC_IDCR, wakeups);
at91_sys_write(AT91_AIC_IECR, backups);
at91_aic_write(AT91_AIC_IDCR, wakeups);
at91_aic_write(AT91_AIC_IECR, backups);
}
#else
@ -133,34 +134,39 @@ void __init at91_aic_init(unsigned int priority[NR_AIC_IRQS])
{
unsigned int i;
at91_aic_base = ioremap(AT91_AIC, 512);
if (!at91_aic_base)
panic("Impossible to ioremap AT91_AIC\n");
/*
* The IVR is used by macro get_irqnr_and_base to read and verify.
* The irq number is NR_AIC_IRQS when a spurious interrupt has occurred.
*/
for (i = 0; i < NR_AIC_IRQS; i++) {
/* Put irq number in Source Vector Register: */
at91_sys_write(AT91_AIC_SVR(i), i);
at91_aic_write(AT91_AIC_SVR(i), i);
/* Active Low interrupt, with the specified priority */
at91_sys_write(AT91_AIC_SMR(i), AT91_AIC_SRCTYPE_LOW | priority[i]);
at91_aic_write(AT91_AIC_SMR(i), AT91_AIC_SRCTYPE_LOW | priority[i]);
irq_set_chip_and_handler(i, &at91_aic_chip, handle_level_irq);
set_irq_flags(i, IRQF_VALID | IRQF_PROBE);
/* Perform 8 End Of Interrupt Command to make sure AIC will not Lock out nIRQ */
if (i < 8)
at91_sys_write(AT91_AIC_EOICR, 0);
at91_aic_write(AT91_AIC_EOICR, 0);
}
/*
* Spurious Interrupt ID in Spurious Vector Register is NR_AIC_IRQS
* When there is no current interrupt, the IRQ Vector Register reads the value stored in AIC_SPU
*/
at91_sys_write(AT91_AIC_SPU, NR_AIC_IRQS);
at91_aic_write(AT91_AIC_SPU, NR_AIC_IRQS);
/* No debugging in AIC: Debug (Protect) Control Register */
at91_sys_write(AT91_AIC_DCR, 0);
at91_aic_write(AT91_AIC_DCR, 0);
/* Disable and clear all interrupts initially */
at91_sys_write(AT91_AIC_IDCR, 0xFFFFFFFF);
at91_sys_write(AT91_AIC_ICCR, 0xFFFFFFFF);
at91_aic_write(AT91_AIC_IDCR, 0xFFFFFFFF);
at91_aic_write(AT91_AIC_ICCR, 0xFFFFFFFF);
}

4
arch/arm/mach-at91/pm.c
View File

@ -218,7 +218,7 @@ static int at91_pm_enter(suspend_state_t state)
| (1 << AT91_ID_FIQ)
| (1 << AT91_ID_SYS)
| (at91_extern_irq))
& at91_sys_read(AT91_AIC_IMR),
& at91_aic_read(AT91_AIC_IMR),
state);
switch (state) {
@ -286,7 +286,7 @@ static int at91_pm_enter(suspend_state_t state)
}
pr_debug("AT91: PM - wakeup %08x\n",
at91_sys_read(AT91_AIC_IPR) & at91_sys_read(AT91_AIC_IMR));
at91_aic_read(AT91_AIC_IPR) & at91_aic_read(AT91_AIC_IMR));
error:
target_state = PM_SUSPEND_ON;