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Merge branch 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Browse Source 
Pull irq core updates from Thomas Gleixner:
 "This is the first (boring) part of irq updates:

   - support for big endian I/O accessors in the generic irq chip

   - cleanup of brcmstb/bcm7120 drivers so they can be reused for non
     ARM SoCs

   - the usual pile of fixes and updates for the various ARM irq chips"

* 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (25 commits)
  irqchip: dw-apb-ictl: Add PM support
  irqchip: dw-apb-ictl: Enable IRQ_GC_MASK_CACHE_PER_TYPE
  irqchip: dw-apb-ictl: Always use use {readl|writel}_relaxed
  ARM: orion: convert the irq_reg_{readl,writel} calls to the new API
  irqchip: atmel-aic: Add missing entry for rm9200 irq fixups
  irqchip: atmel-aic: Rename at91sam9_aic_irq_fixup for naming consistency
  irqchip: atmel-aic: Add specific irq fixup function for sam9g45 and sam9rl
  irqchip: atmel-aic: Add irq fixups for at91sam926x SoCs
  irqchip: atmel-aic: Add irq fixup for RTT block
  irqchip: brcmstb-l2: Convert driver to use irq_reg_{readl,writel}
  irqchip: bcm7120-l2: Convert driver to use irq_reg_{readl,writel}
  irqchip: bcm7120-l2: Decouple driver from brcmstb-l2
  irqchip: bcm7120-l2: Extend driver to support 64+ bit controllers
  irqchip: bcm7120-l2: Use gc->mask_cache to simplify suspend/resume functions
  irqchip: bcm7120-l2: Fix missing nibble in gc->unused mask
  irqchip: bcm7120-l2: Make sure all register accesses use base+offset
  irqchip: bcm7120-l2, brcmstb-l2: Remove ARM Kconfig dependency
  irqchip: bcm7120-l2: Eliminate bad IRQ check
  irqchip: brcmstb-l2: Eliminate dependency on ARM code
  genirq: Generic chip: Add big endian I/O accessors
  ...
This commit is contained in:
Linus Torvalds 2014-12-10 08:38:57 -08:00
commit ecb50f0afd
18 changed files with 344 additions and 187 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

26
Documentation/devicetree/bindings/interrupt-controller/brcm,bcm7120-l2-intc.txt
View File

@ -13,7 +13,12 @@ Such an interrupt controller has the following hardware design:
or if they will output an interrupt signal at this 2nd level interrupt or if they will output an interrupt signal at this 2nd level interrupt
controller, in particular for UARTs controller, in particular for UARTs
- not all 32-bits within the interrupt controller actually map to an interrupt - typically has one 32-bit enable word and one 32-bit status word, but on
some hardware may have more than one enable/status pair
- no atomic set/clear operations
- not all bits within the interrupt controller actually map to an interrupt
The typical hardware layout for this controller is represented below: The typical hardware layout for this controller is represented below:
@ -48,7 +53,9 @@ The typical hardware layout for this controller is represented below:
Required properties: Required properties:
- compatible: should be "brcm,bcm7120-l2-intc" - compatible: should be "brcm,bcm7120-l2-intc"
- reg: specifies the base physical address and size of the registers - reg: specifies the base physical address and size of the registers;
multiple pairs may be specified, with the first pair handling IRQ offsets
0..31 and the second pair handling 32..63
- interrupt-controller: identifies the node as an interrupt controller - interrupt-controller: identifies the node as an interrupt controller
- #interrupt-cells: specifies the number of cells needed to encode an interrupt - #interrupt-cells: specifies the number of cells needed to encode an interrupt
source, should be 1. source, should be 1.
@ -59,18 +66,21 @@ Required properties:
- brcm,int-map-mask: 32-bits bit mask describing how many and which interrupts - brcm,int-map-mask: 32-bits bit mask describing how many and which interrupts
are wired to this 2nd level interrupt controller, and how they match their are wired to this 2nd level interrupt controller, and how they match their
respective interrupt parents. Should match exactly the number of interrupts respective interrupt parents. Should match exactly the number of interrupts
specified in the 'interrupts' property. specified in the 'interrupts' property, multiplied by the number of
enable/status register pairs implemented by this controller. For
multiple parent IRQs with multiple enable/status words, this looks like:
<irq0_w0 irq0_w1 irq1_w0 irq1_w1 ...>
Optional properties: Optional properties:
- brcm,irq-can-wake: if present, this means the L2 controller can be used as a - brcm,irq-can-wake: if present, this means the L2 controller can be used as a
wakeup source for system suspend/resume. wakeup source for system suspend/resume.
- brcm,int-fwd-mask: if present, a 32-bits bit mask to configure for the - brcm,int-fwd-mask: if present, a bit mask to configure the interrupts which
interrupts which have a mux gate, typically UARTs. Setting these bits will have a mux gate, typically UARTs. Setting these bits will make their
make their respective interrupts outputs bypass this 2nd level interrupt respective interrupt outputs bypass this 2nd level interrupt controller
controller completely, it completely transparent for the interrupt controller completely; it is completely transparent for the interrupt controller
parent parent. This should have one 32-bit word per enable/status pair.
Example: Example:

1
arch/arm/mach-bcm/Kconfig
View File

@ -143,6 +143,7 @@ config ARCH_BRCMSTB
select HAVE_ARM_ARCH_TIMER select HAVE_ARM_ARCH_TIMER
select BRCMSTB_GISB_ARB select BRCMSTB_GISB_ARB
select BRCMSTB_L2_IRQ select BRCMSTB_L2_IRQ
select BCM7120_L2_IRQ
help help
Say Y if you intend to run the kernel on a Broadcom ARM-based STB Say Y if you intend to run the kernel on a Broadcom ARM-based STB
chipset. chipset.

8
arch/arm/plat-orion/gpio.c
View File

@ -505,9 +505,9 @@ static void orion_gpio_unmask_irq(struct irq_data *d)
u32 mask = d->mask; u32 mask = d->mask;
irq_gc_lock(gc); irq_gc_lock(gc);
reg_val = irq_reg_readl(gc->reg_base + ct->regs.mask); reg_val = irq_reg_readl(gc, ct->regs.mask);
reg_val |= mask; reg_val |= mask;
irq_reg_writel(reg_val, gc->reg_base + ct->regs.mask); irq_reg_writel(gc, reg_val, ct->regs.mask);
irq_gc_unlock(gc); irq_gc_unlock(gc);
} }
@ -519,9 +519,9 @@ static void orion_gpio_mask_irq(struct irq_data *d)
u32 reg_val; u32 reg_val;
irq_gc_lock(gc); irq_gc_lock(gc);
reg_val = irq_reg_readl(gc->reg_base + ct->regs.mask); reg_val = irq_reg_readl(gc, ct->regs.mask);
reg_val &= ~mask; reg_val &= ~mask;
irq_reg_writel(reg_val, gc->reg_base + ct->regs.mask); irq_reg_writel(gc, reg_val, ct->regs.mask);
irq_gc_unlock(gc); irq_gc_unlock(gc);
} }

7
drivers/irqchip/Kconfig
View File

@ -48,14 +48,19 @@ config ATMEL_AIC5_IRQ
select MULTI_IRQ_HANDLER select MULTI_IRQ_HANDLER
select SPARSE_IRQ select SPARSE_IRQ
config BCM7120_L2_IRQ
bool
select GENERIC_IRQ_CHIP
select IRQ_DOMAIN
config BRCMSTB_L2_IRQ config BRCMSTB_L2_IRQ
bool bool
depends on ARM
select GENERIC_IRQ_CHIP select GENERIC_IRQ_CHIP
select IRQ_DOMAIN select IRQ_DOMAIN
config DW_APB_ICTL config DW_APB_ICTL
bool bool
select GENERIC_IRQ_CHIP
select IRQ_DOMAIN select IRQ_DOMAIN
config IMGPDC_IRQ config IMGPDC_IRQ

4
drivers/irqchip/Makefile
View File

@ -35,6 +35,6 @@ obj-$(CONFIG_TB10X_IRQC) += irq-tb10x.o
obj-$(CONFIG_XTENSA) += irq-xtensa-pic.o obj-$(CONFIG_XTENSA) += irq-xtensa-pic.o
obj-$(CONFIG_XTENSA_MX) += irq-xtensa-mx.o obj-$(CONFIG_XTENSA_MX) += irq-xtensa-mx.o
obj-$(CONFIG_IRQ_CROSSBAR) += irq-crossbar.o obj-$(CONFIG_IRQ_CROSSBAR) += irq-crossbar.o
obj-$(CONFIG_BRCMSTB_L2_IRQ) += irq-brcmstb-l2.o \ obj-$(CONFIG_BCM7120_L2_IRQ) += irq-bcm7120-l2.o
irq-bcm7120-l2.o obj-$(CONFIG_BRCMSTB_L2_IRQ) += irq-brcmstb-l2.o
obj-$(CONFIG_KEYSTONE_IRQ) += irq-keystone.o obj-$(CONFIG_KEYSTONE_IRQ) += irq-keystone.o

2
drivers/irqchip/irq-armada-370-xp.c
View File

@ -268,7 +268,7 @@ static int armada_xp_set_affinity(struct irq_data *d,
writel(reg, main_int_base + ARMADA_370_XP_INT_SOURCE_CTL(hwirq)); writel(reg, main_int_base + ARMADA_370_XP_INT_SOURCE_CTL(hwirq));
raw_spin_unlock(&irq_controller_lock); raw_spin_unlock(&irq_controller_lock);
return 0; return IRQ_SET_MASK_OK;
} }
#endif #endif

26
drivers/irqchip/irq-atmel-aic-common.c
View File

@ -167,6 +167,32 @@ void __init aic_common_rtc_irq_fixup(struct device_node *root)
iounmap(regs); iounmap(regs);
} }
#define AT91_RTT_MR 0x00 /* Real-time Mode Register */
#define AT91_RTT_ALMIEN (1 << 16) /* Alarm Interrupt Enable */
#define AT91_RTT_RTTINCIEN (1 << 17) /* Real Time Timer Increment Interrupt Enable */
void __init aic_common_rtt_irq_fixup(struct device_node *root)
{
struct device_node *np;
void __iomem *regs;
/*
* The at91sam9263 SoC has 2 instances of the RTT block, hence we
* iterate over the DT to find each occurrence.
*/
for_each_compatible_node(np, NULL, "atmel,at91sam9260-rtt") {
regs = of_iomap(np, 0);
if (!regs)
continue;
writel(readl(regs + AT91_RTT_MR) &
~(AT91_RTT_ALMIEN | AT91_RTT_RTTINCIEN),
regs + AT91_RTT_MR);
iounmap(regs);
}
}
void __init aic_common_irq_fixup(const struct of_device_id *matches) void __init aic_common_irq_fixup(const struct of_device_id *matches)
{ {
struct device_node *root = of_find_node_by_path("/"); struct device_node *root = of_find_node_by_path("/");

2
drivers/irqchip/irq-atmel-aic-common.h
View File

@ -34,6 +34,8 @@ struct irq_domain *__init aic_common_of_init(struct device_node *node,
void __init aic_common_rtc_irq_fixup(struct device_node *root); void __init aic_common_rtc_irq_fixup(struct device_node *root);
void __init aic_common_rtt_irq_fixup(struct device_node *root);
void __init aic_common_irq_fixup(const struct of_device_id *matches); void __init aic_common_irq_fixup(const struct of_device_id *matches);
#endif /* __IRQ_ATMEL_AIC_COMMON_H */ #endif /* __IRQ_ATMEL_AIC_COMMON_H */

66
drivers/irqchip/irq-atmel-aic.c
View File

@ -65,11 +65,11 @@ aic_handle(struct pt_regs *regs)
u32 irqnr; u32 irqnr;
u32 irqstat; u32 irqstat;
irqnr = irq_reg_readl(gc->reg_base + AT91_AIC_IVR); irqnr = irq_reg_readl(gc, AT91_AIC_IVR);
irqstat = irq_reg_readl(gc->reg_base + AT91_AIC_ISR); irqstat = irq_reg_readl(gc, AT91_AIC_ISR);
if (!irqstat) if (!irqstat)
irq_reg_writel(0, gc->reg_base + AT91_AIC_EOICR); irq_reg_writel(gc, 0, AT91_AIC_EOICR);
else else
handle_domain_irq(aic_domain, irqnr, regs); handle_domain_irq(aic_domain, irqnr, regs);
} }
@ -80,7 +80,7 @@ static int aic_retrigger(struct irq_data *d)
/* Enable interrupt on AIC5 */ /* Enable interrupt on AIC5 */
irq_gc_lock(gc); irq_gc_lock(gc);
irq_reg_writel(d->mask, gc->reg_base + AT91_AIC_ISCR); irq_reg_writel(gc, d->mask, AT91_AIC_ISCR);
irq_gc_unlock(gc); irq_gc_unlock(gc);
return 0; return 0;
@ -92,12 +92,12 @@ static int aic_set_type(struct irq_data *d, unsigned type)
unsigned int smr; unsigned int smr;
int ret; int ret;
smr = irq_reg_readl(gc->reg_base + AT91_AIC_SMR(d->hwirq)); smr = irq_reg_readl(gc, AT91_AIC_SMR(d->hwirq));
ret = aic_common_set_type(d, type, &smr); ret = aic_common_set_type(d, type, &smr);
if (ret) if (ret)
return ret; return ret;
irq_reg_writel(smr, gc->reg_base + AT91_AIC_SMR(d->hwirq)); irq_reg_writel(gc, smr, AT91_AIC_SMR(d->hwirq));
return 0; return 0;
} }
@ -108,8 +108,8 @@ static void aic_suspend(struct irq_data *d)
struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d); struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d);
irq_gc_lock(gc); irq_gc_lock(gc);
irq_reg_writel(gc->mask_cache, gc->reg_base + AT91_AIC_IDCR); irq_reg_writel(gc, gc->mask_cache, AT91_AIC_IDCR);
irq_reg_writel(gc->wake_active, gc->reg_base + AT91_AIC_IECR); irq_reg_writel(gc, gc->wake_active, AT91_AIC_IECR);
irq_gc_unlock(gc); irq_gc_unlock(gc);
} }
@ -118,8 +118,8 @@ static void aic_resume(struct irq_data *d)
struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d); struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d);
irq_gc_lock(gc); irq_gc_lock(gc);
irq_reg_writel(gc->wake_active, gc->reg_base + AT91_AIC_IDCR); irq_reg_writel(gc, gc->wake_active, AT91_AIC_IDCR);
irq_reg_writel(gc->mask_cache, gc->reg_base + AT91_AIC_IECR); irq_reg_writel(gc, gc->mask_cache, AT91_AIC_IECR);
irq_gc_unlock(gc); irq_gc_unlock(gc);
} }
@ -128,8 +128,8 @@ static void aic_pm_shutdown(struct irq_data *d)
struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d); struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d);
irq_gc_lock(gc); irq_gc_lock(gc);
irq_reg_writel(0xffffffff, gc->reg_base + AT91_AIC_IDCR); irq_reg_writel(gc, 0xffffffff, AT91_AIC_IDCR);
irq_reg_writel(0xffffffff, gc->reg_base + AT91_AIC_ICCR); irq_reg_writel(gc, 0xffffffff, AT91_AIC_ICCR);
irq_gc_unlock(gc); irq_gc_unlock(gc);
} }
#else #else
@ -148,24 +148,24 @@ static void __init aic_hw_init(struct irq_domain *domain)
* will not Lock out nIRQ * will not Lock out nIRQ
*/ */
for (i = 0; i < 8; i++) for (i = 0; i < 8; i++)
irq_reg_writel(0, gc->reg_base + AT91_AIC_EOICR); irq_reg_writel(gc, 0, AT91_AIC_EOICR);
/* /*
* Spurious Interrupt ID in Spurious Vector Register. * Spurious Interrupt ID in Spurious Vector Register.
* When there is no current interrupt, the IRQ Vector Register * When there is no current interrupt, the IRQ Vector Register
* reads the value stored in AIC_SPU * reads the value stored in AIC_SPU
*/ */
irq_reg_writel(0xffffffff, gc->reg_base + AT91_AIC_SPU); irq_reg_writel(gc, 0xffffffff, AT91_AIC_SPU);
/* No debugging in AIC: Debug (Protect) Control Register */ /* No debugging in AIC: Debug (Protect) Control Register */
irq_reg_writel(0, gc->reg_base + AT91_AIC_DCR); irq_reg_writel(gc, 0, AT91_AIC_DCR);
/* Disable and clear all interrupts initially */ /* Disable and clear all interrupts initially */
irq_reg_writel(0xffffffff, gc->reg_base + AT91_AIC_IDCR); irq_reg_writel(gc, 0xffffffff, AT91_AIC_IDCR);
irq_reg_writel(0xffffffff, gc->reg_base + AT91_AIC_ICCR); irq_reg_writel(gc, 0xffffffff, AT91_AIC_ICCR);
for (i = 0; i < 32; i++) for (i = 0; i < 32; i++)
irq_reg_writel(i, gc->reg_base + AT91_AIC_SVR(i)); irq_reg_writel(gc, i, AT91_AIC_SVR(i));
} }
static int aic_irq_domain_xlate(struct irq_domain *d, static int aic_irq_domain_xlate(struct irq_domain *d,
@ -195,10 +195,10 @@ static int aic_irq_domain_xlate(struct irq_domain *d,
gc = dgc->gc[idx]; gc = dgc->gc[idx];
irq_gc_lock(gc); irq_gc_lock(gc);
smr = irq_reg_readl(gc->reg_base + AT91_AIC_SMR(*out_hwirq)); smr = irq_reg_readl(gc, AT91_AIC_SMR(*out_hwirq));
ret = aic_common_set_priority(intspec[2], &smr); ret = aic_common_set_priority(intspec[2], &smr);
if (!ret) if (!ret)
irq_reg_writel(smr, gc->reg_base + AT91_AIC_SMR(*out_hwirq)); irq_reg_writel(gc, smr, AT91_AIC_SMR(*out_hwirq));
irq_gc_unlock(gc); irq_gc_unlock(gc);
return ret; return ret;
@ -209,16 +209,32 @@ static const struct irq_domain_ops aic_irq_ops = {
.xlate = aic_irq_domain_xlate, .xlate = aic_irq_domain_xlate,
}; };
static void __init at91sam9_aic_irq_fixup(struct device_node *root) static void __init at91rm9200_aic_irq_fixup(struct device_node *root)
{ {
aic_common_rtc_irq_fixup(root); aic_common_rtc_irq_fixup(root);
} }
static void __init at91sam9260_aic_irq_fixup(struct device_node *root)
{
aic_common_rtt_irq_fixup(root);
}
static void __init at91sam9g45_aic_irq_fixup(struct device_node *root)
{
aic_common_rtc_irq_fixup(root);
aic_common_rtt_irq_fixup(root);
}
static const struct of_device_id __initdata aic_irq_fixups[] = { static const struct of_device_id __initdata aic_irq_fixups[] = {
{ .compatible = "atmel,at91sam9g45", .data = at91sam9_aic_irq_fixup }, { .compatible = "atmel,at91rm9200", .data = at91rm9200_aic_irq_fixup },
{ .compatible = "atmel,at91sam9n12", .data = at91sam9_aic_irq_fixup }, { .compatible = "atmel,at91sam9g45", .data = at91sam9g45_aic_irq_fixup },
{ .compatible = "atmel,at91sam9rl", .data = at91sam9_aic_irq_fixup }, { .compatible = "atmel,at91sam9n12", .data = at91rm9200_aic_irq_fixup },
{ .compatible = "atmel,at91sam9x5", .data = at91sam9_aic_irq_fixup }, { .compatible = "atmel,at91sam9rl", .data = at91sam9g45_aic_irq_fixup },
{ .compatible = "atmel,at91sam9x5", .data = at91rm9200_aic_irq_fixup },
{ .compatible = "atmel,at91sam9260", .data = at91sam9260_aic_irq_fixup },
{ .compatible = "atmel,at91sam9261", .data = at91sam9260_aic_irq_fixup },
{ .compatible = "atmel,at91sam9263", .data = at91sam9260_aic_irq_fixup },
{ .compatible = "atmel,at91sam9g20", .data = at91sam9260_aic_irq_fixup },
{ /* sentinel */ }, { /* sentinel */ },
}; };

65
drivers/irqchip/irq-atmel-aic5.c
View File

@ -75,11 +75,11 @@ aic5_handle(struct pt_regs *regs)
u32 irqnr; u32 irqnr;
u32 irqstat; u32 irqstat;
irqnr = irq_reg_readl(gc->reg_base + AT91_AIC5_IVR); irqnr = irq_reg_readl(gc, AT91_AIC5_IVR);
irqstat = irq_reg_readl(gc->reg_base + AT91_AIC5_ISR); irqstat = irq_reg_readl(gc, AT91_AIC5_ISR);
if (!irqstat) if (!irqstat)
irq_reg_writel(0, gc->reg_base + AT91_AIC5_EOICR); irq_reg_writel(gc, 0, AT91_AIC5_EOICR);
else else
handle_domain_irq(aic5_domain, irqnr, regs); handle_domain_irq(aic5_domain, irqnr, regs);
} }
@ -92,8 +92,8 @@ static void aic5_mask(struct irq_data *d)
/* Disable interrupt on AIC5 */ /* Disable interrupt on AIC5 */
irq_gc_lock(gc); irq_gc_lock(gc);
irq_reg_writel(d->hwirq, gc->reg_base + AT91_AIC5_SSR); irq_reg_writel(gc, d->hwirq, AT91_AIC5_SSR);
irq_reg_writel(1, gc->reg_base + AT91_AIC5_IDCR); irq_reg_writel(gc, 1, AT91_AIC5_IDCR);
gc->mask_cache &= ~d->mask; gc->mask_cache &= ~d->mask;
irq_gc_unlock(gc); irq_gc_unlock(gc);
} }
@ -106,8 +106,8 @@ static void aic5_unmask(struct irq_data *d)
/* Enable interrupt on AIC5 */ /* Enable interrupt on AIC5 */
irq_gc_lock(gc); irq_gc_lock(gc);
irq_reg_writel(d->hwirq, gc->reg_base + AT91_AIC5_SSR); irq_reg_writel(gc, d->hwirq, AT91_AIC5_SSR);
irq_reg_writel(1, gc->reg_base + AT91_AIC5_IECR); irq_reg_writel(gc, 1, AT91_AIC5_IECR);
gc->mask_cache |= d->mask; gc->mask_cache |= d->mask;
irq_gc_unlock(gc); irq_gc_unlock(gc);
} }
@ -120,8 +120,8 @@ static int aic5_retrigger(struct irq_data *d)
/* Enable interrupt on AIC5 */ /* Enable interrupt on AIC5 */
irq_gc_lock(gc); irq_gc_lock(gc);
irq_reg_writel(d->hwirq, gc->reg_base + AT91_AIC5_SSR); irq_reg_writel(gc, d->hwirq, AT91_AIC5_SSR);
irq_reg_writel(1, gc->reg_base + AT91_AIC5_ISCR); irq_reg_writel(gc, 1, AT91_AIC5_ISCR);
irq_gc_unlock(gc); irq_gc_unlock(gc);
return 0; return 0;
@ -136,11 +136,11 @@ static int aic5_set_type(struct irq_data *d, unsigned type)
int ret; int ret;
irq_gc_lock(gc); irq_gc_lock(gc);
irq_reg_writel(d->hwirq, gc->reg_base + AT91_AIC5_SSR); irq_reg_writel(gc, d->hwirq, AT91_AIC5_SSR);
smr = irq_reg_readl(gc->reg_base + AT91_AIC5_SMR); smr = irq_reg_readl(gc, AT91_AIC5_SMR);
ret = aic_common_set_type(d, type, &smr); ret = aic_common_set_type(d, type, &smr);
if (!ret) if (!ret)
irq_reg_writel(smr, gc->reg_base + AT91_AIC5_SMR); irq_reg_writel(gc, smr, AT91_AIC5_SMR);
irq_gc_unlock(gc); irq_gc_unlock(gc);
return ret; return ret;
@ -162,12 +162,11 @@ static void aic5_suspend(struct irq_data *d)
if ((mask & gc->mask_cache) == (mask & gc->wake_active)) if ((mask & gc->mask_cache) == (mask & gc->wake_active))
continue; continue;
irq_reg_writel(i + gc->irq_base, irq_reg_writel(bgc, i + gc->irq_base, AT91_AIC5_SSR);
bgc->reg_base + AT91_AIC5_SSR);
if (mask & gc->wake_active) if (mask & gc->wake_active)
irq_reg_writel(1, bgc->reg_base + AT91_AIC5_IECR); irq_reg_writel(bgc, 1, AT91_AIC5_IECR);
else else
irq_reg_writel(1, bgc->reg_base + AT91_AIC5_IDCR); irq_reg_writel(bgc, 1, AT91_AIC5_IDCR);
} }
irq_gc_unlock(bgc); irq_gc_unlock(bgc);
} }
@ -187,12 +186,11 @@ static void aic5_resume(struct irq_data *d)
if ((mask & gc->mask_cache) == (mask & gc->wake_active)) if ((mask & gc->mask_cache) == (mask & gc->wake_active))
continue; continue;
irq_reg_writel(i + gc->irq_base, irq_reg_writel(bgc, i + gc->irq_base, AT91_AIC5_SSR);
bgc->reg_base + AT91_AIC5_SSR);
if (mask & gc->mask_cache) if (mask & gc->mask_cache)
irq_reg_writel(1, bgc->reg_base + AT91_AIC5_IECR); irq_reg_writel(bgc, 1, AT91_AIC5_IECR);
else else
irq_reg_writel(1, bgc->reg_base + AT91_AIC5_IDCR); irq_reg_writel(bgc, 1, AT91_AIC5_IDCR);
} }
irq_gc_unlock(bgc); irq_gc_unlock(bgc);
} }
@ -207,10 +205,9 @@ static void aic5_pm_shutdown(struct irq_data *d)
irq_gc_lock(bgc); irq_gc_lock(bgc);
for (i = 0; i < dgc->irqs_per_chip; i++) { for (i = 0; i < dgc->irqs_per_chip; i++) {
irq_reg_writel(i + gc->irq_base, irq_reg_writel(bgc, i + gc->irq_base, AT91_AIC5_SSR);
bgc->reg_base + AT91_AIC5_SSR); irq_reg_writel(bgc, 1, AT91_AIC5_IDCR);
irq_reg_writel(1, bgc->reg_base + AT91_AIC5_IDCR); irq_reg_writel(bgc, 1, AT91_AIC5_ICCR);
irq_reg_writel(1, bgc->reg_base + AT91_AIC5_ICCR);
} }
irq_gc_unlock(bgc); irq_gc_unlock(bgc);
} }
@ -230,24 +227,24 @@ static void __init aic5_hw_init(struct irq_domain *domain)
* will not Lock out nIRQ * will not Lock out nIRQ
*/ */
for (i = 0; i < 8; i++) for (i = 0; i < 8; i++)
irq_reg_writel(0, gc->reg_base + AT91_AIC5_EOICR); irq_reg_writel(gc, 0, AT91_AIC5_EOICR);
/* /*
* Spurious Interrupt ID in Spurious Vector Register. * Spurious Interrupt ID in Spurious Vector Register.
* When there is no current interrupt, the IRQ Vector Register * When there is no current interrupt, the IRQ Vector Register
* reads the value stored in AIC_SPU * reads the value stored in AIC_SPU
*/ */
irq_reg_writel(0xffffffff, gc->reg_base + AT91_AIC5_SPU); irq_reg_writel(gc, 0xffffffff, AT91_AIC5_SPU);
/* No debugging in AIC: Debug (Protect) Control Register */ /* No debugging in AIC: Debug (Protect) Control Register */
irq_reg_writel(0, gc->reg_base + AT91_AIC5_DCR); irq_reg_writel(gc, 0, AT91_AIC5_DCR);
/* Disable and clear all interrupts initially */ /* Disable and clear all interrupts initially */
for (i = 0; i < domain->revmap_size; i++) { for (i = 0; i < domain->revmap_size; i++) {
irq_reg_writel(i, gc->reg_base + AT91_AIC5_SSR); irq_reg_writel(gc, i, AT91_AIC5_SSR);
irq_reg_writel(i, gc->reg_base + AT91_AIC5_SVR); irq_reg_writel(gc, i, AT91_AIC5_SVR);
irq_reg_writel(1, gc->reg_base + AT91_AIC5_IDCR); irq_reg_writel(gc, 1, AT91_AIC5_IDCR);
irq_reg_writel(1, gc->reg_base + AT91_AIC5_ICCR); irq_reg_writel(gc, 1, AT91_AIC5_ICCR);
} }
} }
@ -273,11 +270,11 @@ static int aic5_irq_domain_xlate(struct irq_domain *d,
gc = dgc->gc[0]; gc = dgc->gc[0];
irq_gc_lock(gc); irq_gc_lock(gc);
irq_reg_writel(*out_hwirq, gc->reg_base + AT91_AIC5_SSR); irq_reg_writel(gc, *out_hwirq, AT91_AIC5_SSR);
smr = irq_reg_readl(gc->reg_base + AT91_AIC5_SMR); smr = irq_reg_readl(gc, AT91_AIC5_SMR);
ret = aic_common_set_priority(intspec[2], &smr); ret = aic_common_set_priority(intspec[2], &smr);
if (!ret) if (!ret)
irq_reg_writel(intspec[2] | smr, gc->reg_base + AT91_AIC5_SMR); irq_reg_writel(gc, intspec[2] | smr, AT91_AIC5_SMR);
irq_gc_unlock(gc); irq_gc_unlock(gc);
return ret; return ret;

172
drivers/irqchip/irq-bcm7120-l2.c
View File

@ -13,6 +13,7 @@
#include <linux/init.h> #include <linux/init.h>
#include <linux/slab.h> #include <linux/slab.h>
#include <linux/module.h> #include <linux/module.h>
#include <linux/kconfig.h>
#include <linux/platform_device.h> #include <linux/platform_device.h>
#include <linux/of.h> #include <linux/of.h>
#include <linux/of_irq.h> #include <linux/of_irq.h>
@ -23,47 +24,52 @@
#include <linux/io.h> #include <linux/io.h>
#include <linux/irqdomain.h> #include <linux/irqdomain.h>
#include <linux/reboot.h> #include <linux/reboot.h>
#include <linux/bitops.h>
#include <linux/irqchip/chained_irq.h> #include <linux/irqchip/chained_irq.h>
#include "irqchip.h" #include "irqchip.h"
#include <asm/mach/irq.h>
/* Register offset in the L2 interrupt controller */ /* Register offset in the L2 interrupt controller */
#define IRQEN 0x00 #define IRQEN 0x00
#define IRQSTAT 0x04 #define IRQSTAT 0x04
#define MAX_WORDS 4
#define IRQS_PER_WORD 32
struct bcm7120_l2_intc_data { struct bcm7120_l2_intc_data {
void __iomem *base; unsigned int n_words;
void __iomem *base[MAX_WORDS];
struct irq_domain *domain; struct irq_domain *domain;
bool can_wake; bool can_wake;
u32 irq_fwd_mask; u32 irq_fwd_mask[MAX_WORDS];
u32 irq_map_mask; u32 irq_map_mask[MAX_WORDS];
u32 saved_mask;
}; };
static void bcm7120_l2_intc_irq_handle(unsigned int irq, struct irq_desc *desc) static void bcm7120_l2_intc_irq_handle(unsigned int irq, struct irq_desc *desc)
{ {
struct bcm7120_l2_intc_data *b = irq_desc_get_handler_data(desc); struct bcm7120_l2_intc_data *b = irq_desc_get_handler_data(desc);
struct irq_chip *chip = irq_desc_get_chip(desc); struct irq_chip *chip = irq_desc_get_chip(desc);
u32 status; unsigned int idx;
chained_irq_enter(chip, desc); chained_irq_enter(chip, desc);
status = __raw_readl(b->base + IRQSTAT); for (idx = 0; idx < b->n_words; idx++) {
int base = idx * IRQS_PER_WORD;
struct irq_chip_generic *gc =
irq_get_domain_generic_chip(b->domain, base);
unsigned long pending;
int hwirq;
if (status == 0) { irq_gc_lock(gc);
do_bad_IRQ(irq, desc); pending = irq_reg_readl(gc, IRQSTAT) & gc->mask_cache;
goto out; irq_gc_unlock(gc);
for_each_set_bit(hwirq, &pending, IRQS_PER_WORD) {
generic_handle_irq(irq_find_mapping(b->domain,
base + hwirq));
}
} }
do {
irq = ffs(status) - 1;
status &= ~(1 << irq);
generic_handle_irq(irq_find_mapping(b->domain, irq));
} while (status);
out:
chained_irq_exit(chip, desc); chained_irq_exit(chip, desc);
} }
@ -71,26 +77,20 @@ static void bcm7120_l2_intc_suspend(struct irq_data *d)
{ {
struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d); struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d);
struct bcm7120_l2_intc_data *b = gc->private; struct bcm7120_l2_intc_data *b = gc->private;
u32 reg;
irq_gc_lock(gc); irq_gc_lock(gc);
/* Save the current mask and the interrupt forward mask */ if (b->can_wake)
b->saved_mask = __raw_readl(b->base) | b->irq_fwd_mask; irq_reg_writel(gc, gc->mask_cache | gc->wake_active, IRQEN);
if (b->can_wake) {
reg = b->saved_mask | gc->wake_active;
__raw_writel(reg, b->base);
}
irq_gc_unlock(gc); irq_gc_unlock(gc);
} }
static void bcm7120_l2_intc_resume(struct irq_data *d) static void bcm7120_l2_intc_resume(struct irq_data *d)
{ {
struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d); struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d);
struct bcm7120_l2_intc_data *b = gc->private;
/* Restore the saved mask */ /* Restore the saved mask */
irq_gc_lock(gc); irq_gc_lock(gc);
__raw_writel(b->saved_mask, b->base); irq_reg_writel(gc, gc->mask_cache, IRQEN);
irq_gc_unlock(gc); irq_gc_unlock(gc);
} }
@ -99,6 +99,7 @@ static int bcm7120_l2_intc_init_one(struct device_node *dn,
int irq, const __be32 *map_mask) int irq, const __be32 *map_mask)
{ {
int parent_irq; int parent_irq;
unsigned int idx;
parent_irq = irq_of_parse_and_map(dn, irq); parent_irq = irq_of_parse_and_map(dn, irq);
if (!parent_irq) { if (!parent_irq) {
@ -106,7 +107,12 @@ static int bcm7120_l2_intc_init_one(struct device_node *dn,
return -EINVAL; return -EINVAL;
} }
data->irq_map_mask |= be32_to_cpup(map_mask + irq); /* For multiple parent IRQs with multiple words, this looks like:
* <irq0_w0 irq0_w1 irq1_w0 irq1_w1 ...>
*/
for (idx = 0; idx < data->n_words; idx++)
data->irq_map_mask[idx] |=
be32_to_cpup(map_mask + irq * data->n_words + idx);
irq_set_handler_data(parent_irq, data); irq_set_handler_data(parent_irq, data);
irq_set_chained_handler(parent_irq, bcm7120_l2_intc_irq_handle); irq_set_chained_handler(parent_irq, bcm7120_l2_intc_irq_handle);
@ -123,26 +129,41 @@ int __init bcm7120_l2_intc_of_init(struct device_node *dn,
struct irq_chip_type *ct; struct irq_chip_type *ct;
const __be32 *map_mask; const __be32 *map_mask;
int num_parent_irqs; int num_parent_irqs;
int ret = 0, len, irq; int ret = 0, len;
unsigned int idx, irq, flags;
data = kzalloc(sizeof(*data), GFP_KERNEL); data = kzalloc(sizeof(*data), GFP_KERNEL);
if (!data) if (!data)
return -ENOMEM; return -ENOMEM;
data->base = of_iomap(dn, 0); for (idx = 0; idx < MAX_WORDS; idx++) {
if (!data->base) { data->base[idx] = of_iomap(dn, idx);
if (!data->base[idx])
break;
data->n_words = idx + 1;
}
if (!data->n_words) {
pr_err("failed to remap intc L2 registers\n"); pr_err("failed to remap intc L2 registers\n");
ret = -ENOMEM; ret = -ENOMEM;
goto out_free; goto out_unmap;
} }
if (of_property_read_u32(dn, "brcm,int-fwd-mask", &data->irq_fwd_mask)) /* Enable all interrupts specified in the interrupt forward mask;
data->irq_fwd_mask = 0; * disable all others. If the property doesn't exist (-EINVAL),
* assume all zeroes.
/* Enable all interrupt specified in the interrupt forward mask and have
* the other disabled
*/ */
__raw_writel(data->irq_fwd_mask, data->base + IRQEN); ret = of_property_read_u32_array(dn, "brcm,int-fwd-mask",
data->irq_fwd_mask, data->n_words);
if (ret == 0 || ret == -EINVAL) {
for (idx = 0; idx < data->n_words; idx++)
__raw_writel(data->irq_fwd_mask[idx],
data->base[idx] + IRQEN);
} else {
/* property exists but has the wrong number of words */
pr_err("invalid int-fwd-mask property\n");
ret = -EINVAL;
goto out_unmap;
}
num_parent_irqs = of_irq_count(dn); num_parent_irqs = of_irq_count(dn);
if (num_parent_irqs <= 0) { if (num_parent_irqs <= 0) {
@ -152,7 +173,8 @@ int __init bcm7120_l2_intc_of_init(struct device_node *dn,
} }
map_mask = of_get_property(dn, "brcm,int-map-mask", &len); map_mask = of_get_property(dn, "brcm,int-map-mask", &len);
if (!map_mask || (len != (sizeof(*map_mask) * num_parent_irqs))) { if (!map_mask ||
(len != (sizeof(*map_mask) * num_parent_irqs * data->n_words))) {
pr_err("invalid brcm,int-map-mask property\n"); pr_err("invalid brcm,int-map-mask property\n");
ret = -EINVAL; ret = -EINVAL;
goto out_unmap; goto out_unmap;
@ -164,56 +186,70 @@ int __init bcm7120_l2_intc_of_init(struct device_node *dn,
goto out_unmap; goto out_unmap;
} }
data->domain = irq_domain_add_linear(dn, 32, data->domain = irq_domain_add_linear(dn, IRQS_PER_WORD * data->n_words,
&irq_generic_chip_ops, NULL); &irq_generic_chip_ops, NULL);
if (!data->domain) { if (!data->domain) {
ret = -ENOMEM; ret = -ENOMEM;
goto out_unmap; goto out_unmap;
} }
ret = irq_alloc_domain_generic_chips(data->domain, 32, 1, /* MIPS chips strapped for BE will automagically configure the
dn->full_name, handle_level_irq, clr, 0, * peripheral registers for CPU-native byte order.
IRQ_GC_INIT_MASK_CACHE); */
flags = IRQ_GC_INIT_MASK_CACHE;
if (IS_ENABLED(CONFIG_MIPS) && IS_ENABLED(CONFIG_CPU_BIG_ENDIAN))
flags |= IRQ_GC_BE_IO;
ret = irq_alloc_domain_generic_chips(data->domain, IRQS_PER_WORD, 1,
dn->full_name, handle_level_irq, clr, 0, flags);
if (ret) { if (ret) {
pr_err("failed to allocate generic irq chip\n"); pr_err("failed to allocate generic irq chip\n");
goto out_free_domain; goto out_free_domain;
} }
gc = irq_get_domain_generic_chip(data->domain, 0); if (of_property_read_bool(dn, "brcm,irq-can-wake"))
gc->unused = 0xfffffff & ~data->irq_map_mask;
gc->reg_base = data->base;
gc->private = data;
ct = gc->chip_types;
ct->regs.mask = IRQEN;
ct->chip.irq_mask = irq_gc_mask_clr_bit;
ct->chip.irq_unmask = irq_gc_mask_set_bit;
ct->chip.irq_ack = irq_gc_noop;
ct->chip.irq_suspend = bcm7120_l2_intc_suspend;
ct->chip.irq_resume = bcm7120_l2_intc_resume;
if (of_property_read_bool(dn, "brcm,irq-can-wake")) {
data->can_wake = true; data->can_wake = true;
/* This IRQ chip can wake the system, set all relevant child
* interupts in wake_enabled mask for (idx = 0; idx < data->n_words; idx++) {
*/ irq = idx * IRQS_PER_WORD;
gc->wake_enabled = 0xffffffff; gc = irq_get_domain_generic_chip(data->domain, irq);
gc->wake_enabled &= ~gc->unused;
ct->chip.irq_set_wake = irq_gc_set_wake; gc->unused = 0xffffffff & ~data->irq_map_mask[idx];
gc->reg_base = data->base[idx];
gc->private = data;
ct = gc->chip_types;
ct->regs.mask = IRQEN;
ct->chip.irq_mask = irq_gc_mask_clr_bit;
ct->chip.irq_unmask = irq_gc_mask_set_bit;
ct->chip.irq_ack = irq_gc_noop;
ct->chip.irq_suspend = bcm7120_l2_intc_suspend;
ct->chip.irq_resume = bcm7120_l2_intc_resume;
if (data->can_wake) {
/* This IRQ chip can wake the system, set all
* relevant child interupts in wake_enabled mask
*/
gc->wake_enabled = 0xffffffff;
gc->wake_enabled &= ~gc->unused;
ct->chip.irq_set_wake = irq_gc_set_wake;
}
} }
pr_info("registered BCM7120 L2 intc (mem: 0x%p, parent IRQ(s): %d)\n", pr_info("registered BCM7120 L2 intc (mem: 0x%p, parent IRQ(s): %d)\n",
data->base, num_parent_irqs); data->base[0], num_parent_irqs);
return 0; return 0;
out_free_domain: out_free_domain:
irq_domain_remove(data->domain); irq_domain_remove(data->domain);
out_unmap: out_unmap:
iounmap(data->base); for (idx = 0; idx < MAX_WORDS; idx++) {
out_free: if (data->base[idx])
iounmap(data->base[idx]);
}
kfree(data); kfree(data);
return ret; return ret;
} }
IRQCHIP_DECLARE(brcmstb_l2_intc, "brcm,bcm7120-l2-intc", IRQCHIP_DECLARE(bcm7120_l2_intc, "brcm,bcm7120-l2-intc",
bcm7120_l2_intc_of_init); bcm7120_l2_intc_of_init);

41
drivers/irqchip/irq-brcmstb-l2.c
View File

@ -18,7 +18,9 @@
#include <linux/init.h> #include <linux/init.h>
#include <linux/slab.h> #include <linux/slab.h>
#include <linux/module.h> #include <linux/module.h>
#include <linux/kconfig.h>
#include <linux/platform_device.h> #include <linux/platform_device.h>
#include <linux/spinlock.h>
#include <linux/of.h> #include <linux/of.h>
#include <linux/of_irq.h> #include <linux/of_irq.h>
#include <linux/of_address.h> #include <linux/of_address.h>
@ -30,8 +32,6 @@
#include <linux/irqchip.h> #include <linux/irqchip.h>
#include <linux/irqchip/chained_irq.h> #include <linux/irqchip/chained_irq.h>
#include <asm/mach/irq.h>
#include "irqchip.h" #include "irqchip.h"
/* Register offsets in the L2 interrupt controller */ /* Register offsets in the L2 interrupt controller */
@ -54,23 +54,26 @@ struct brcmstb_l2_intc_data {
static void brcmstb_l2_intc_irq_handle(unsigned int irq, struct irq_desc *desc) static void brcmstb_l2_intc_irq_handle(unsigned int irq, struct irq_desc *desc)
{ {
struct brcmstb_l2_intc_data *b = irq_desc_get_handler_data(desc); struct brcmstb_l2_intc_data *b = irq_desc_get_handler_data(desc);
struct irq_chip_generic *gc = irq_get_domain_generic_chip(b->domain, 0);
struct irq_chip *chip = irq_desc_get_chip(desc); struct irq_chip *chip = irq_desc_get_chip(desc);
u32 status; u32 status;
chained_irq_enter(chip, desc); chained_irq_enter(chip, desc);
status = __raw_readl(b->base + CPU_STATUS) & status = irq_reg_readl(gc, CPU_STATUS) &
~(__raw_readl(b->base + CPU_MASK_STATUS)); ~(irq_reg_readl(gc, CPU_MASK_STATUS));
if (status == 0) { if (status == 0) {
do_bad_IRQ(irq, desc); raw_spin_lock(&desc->lock);
handle_bad_irq(irq, desc);
raw_spin_unlock(&desc->lock);
goto out; goto out;
} }
do { do {
irq = ffs(status) - 1; irq = ffs(status) - 1;
/* ack at our level */ /* ack at our level */
__raw_writel(1 << irq, b->base + CPU_CLEAR); irq_reg_writel(gc, 1 << irq, CPU_CLEAR);
status &= ~(1 << irq); status &= ~(1 << irq);
generic_handle_irq(irq_find_mapping(b->domain, irq)); generic_handle_irq(irq_find_mapping(b->domain, irq));
} while (status); } while (status);
@ -85,12 +88,12 @@ static void brcmstb_l2_intc_suspend(struct irq_data *d)
irq_gc_lock(gc); irq_gc_lock(gc);
/* Save the current mask */ /* Save the current mask */
b->saved_mask = __raw_readl(b->base + CPU_MASK_STATUS); b->saved_mask = irq_reg_readl(gc, CPU_MASK_STATUS);
if (b->can_wake) { if (b->can_wake) {
/* Program the wakeup mask */ /* Program the wakeup mask */
__raw_writel(~gc->wake_active, b->base + CPU_MASK_SET); irq_reg_writel(gc, ~gc->wake_active, CPU_MASK_SET);
__raw_writel(gc->wake_active, b->base + CPU_MASK_CLEAR); irq_reg_writel(gc, gc->wake_active, CPU_MASK_CLEAR);
} }
irq_gc_unlock(gc); irq_gc_unlock(gc);
} }
@ -102,11 +105,11 @@ static void brcmstb_l2_intc_resume(struct irq_data *d)
irq_gc_lock(gc); irq_gc_lock(gc);
/* Clear unmasked non-wakeup interrupts */ /* Clear unmasked non-wakeup interrupts */
__raw_writel(~b->saved_mask & ~gc->wake_active, b->base + CPU_CLEAR); irq_reg_writel(gc, ~b->saved_mask & ~gc->wake_active, CPU_CLEAR);
/* Restore the saved mask */ /* Restore the saved mask */
__raw_writel(b->saved_mask, b->base + CPU_MASK_SET); irq_reg_writel(gc, b->saved_mask, CPU_MASK_SET);
__raw_writel(~b->saved_mask, b->base + CPU_MASK_CLEAR); irq_reg_writel(gc, ~b->saved_mask, CPU_MASK_CLEAR);
irq_gc_unlock(gc); irq_gc_unlock(gc);
} }
@ -118,6 +121,7 @@ int __init brcmstb_l2_intc_of_init(struct device_node *np,
struct irq_chip_generic *gc; struct irq_chip_generic *gc;
struct irq_chip_type *ct; struct irq_chip_type *ct;
int ret; int ret;
unsigned int flags;
data = kzalloc(sizeof(*data), GFP_KERNEL); data = kzalloc(sizeof(*data), GFP_KERNEL);
if (!data) if (!data)
@ -131,8 +135,8 @@ int __init brcmstb_l2_intc_of_init(struct device_node *np,
} }
/* Disable all interrupts by default */ /* Disable all interrupts by default */
__raw_writel(0xffffffff, data->base + CPU_MASK_SET); writel(0xffffffff, data->base + CPU_MASK_SET);
__raw_writel(0xffffffff, data->base + CPU_CLEAR); writel(0xffffffff, data->base + CPU_CLEAR);
data->parent_irq = irq_of_parse_and_map(np, 0); data->parent_irq = irq_of_parse_and_map(np, 0);
if (!data->parent_irq) { if (!data->parent_irq) {
@ -148,9 +152,16 @@ int __init brcmstb_l2_intc_of_init(struct device_node *np,
goto out_unmap; goto out_unmap;
} }
/* MIPS chips strapped for BE will automagically configure the
* peripheral registers for CPU-native byte order.
*/
flags = 0;
if (IS_ENABLED(CONFIG_MIPS) && IS_ENABLED(CONFIG_CPU_BIG_ENDIAN))
flags |= IRQ_GC_BE_IO;
/* Allocate a single Generic IRQ chip for this node */ /* Allocate a single Generic IRQ chip for this node */
ret = irq_alloc_domain_generic_chips(data->domain, 32, 1, ret = irq_alloc_domain_generic_chips(data->domain, 32, 1,
np->full_name, handle_edge_irq, clr, 0, 0); np->full_name, handle_edge_irq, clr, 0, flags);
if (ret) { if (ret) {
pr_err("failed to allocate generic irq chip\n"); pr_err("failed to allocate generic irq chip\n");
goto out_free_domain; goto out_free_domain;

32
drivers/irqchip/irq-dw-apb-ictl.c
View File

@ -50,6 +50,21 @@ static void dw_apb_ictl_handler(unsigned int irq, struct irq_desc *desc)
chained_irq_exit(chip, desc); chained_irq_exit(chip, desc);
} }
#ifdef CONFIG_PM
static void dw_apb_ictl_resume(struct irq_data *d)
{
struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d);
struct irq_chip_type *ct = irq_data_get_chip_type(d);
irq_gc_lock(gc);
writel_relaxed(~0, gc->reg_base + ct->regs.enable);
writel_relaxed(*ct->mask_cache, gc->reg_base + ct->regs.mask);
irq_gc_unlock(gc);
}
#else
#define dw_apb_ictl_resume NULL
#endif /* CONFIG_PM */
static int __init dw_apb_ictl_init(struct device_node *np, static int __init dw_apb_ictl_init(struct device_node *np,
struct device_node *parent) struct device_node *parent)
{ {
@ -94,16 +109,16 @@ static int __init dw_apb_ictl_init(struct device_node *np,
*/ */
/* mask and enable all interrupts */ /* mask and enable all interrupts */
writel(~0, iobase + APB_INT_MASK_L); writel_relaxed(~0, iobase + APB_INT_MASK_L);
writel(~0, iobase + APB_INT_MASK_H); writel_relaxed(~0, iobase + APB_INT_MASK_H);
writel(~0, iobase + APB_INT_ENABLE_L); writel_relaxed(~0, iobase + APB_INT_ENABLE_L);
writel(~0, iobase + APB_INT_ENABLE_H); writel_relaxed(~0, iobase + APB_INT_ENABLE_H);
reg = readl(iobase + APB_INT_ENABLE_H); reg = readl_relaxed(iobase + APB_INT_ENABLE_H);
if (reg) if (reg)
nrirqs = 32 + fls(reg); nrirqs = 32 + fls(reg);
else else
nrirqs = fls(readl(iobase + APB_INT_ENABLE_L)); nrirqs = fls(readl_relaxed(iobase + APB_INT_ENABLE_L));
domain = irq_domain_add_linear(np, nrirqs, domain = irq_domain_add_linear(np, nrirqs,
&irq_generic_chip_ops, NULL); &irq_generic_chip_ops, NULL);
@ -115,6 +130,7 @@ static int __init dw_apb_ictl_init(struct device_node *np,
ret = irq_alloc_domain_generic_chips(domain, 32, (nrirqs > 32) ? 2 : 1, ret = irq_alloc_domain_generic_chips(domain, 32, (nrirqs > 32) ? 2 : 1,
np->name, handle_level_irq, clr, 0, np->name, handle_level_irq, clr, 0,
IRQ_GC_MASK_CACHE_PER_TYPE |
IRQ_GC_INIT_MASK_CACHE); IRQ_GC_INIT_MASK_CACHE);
if (ret) { if (ret) {
pr_err("%s: unable to alloc irq domain gc\n", np->full_name); pr_err("%s: unable to alloc irq domain gc\n", np->full_name);
@ -126,13 +142,17 @@ static int __init dw_apb_ictl_init(struct device_node *np,
gc->reg_base = iobase; gc->reg_base = iobase;
gc->chip_types[0].regs.mask = APB_INT_MASK_L; gc->chip_types[0].regs.mask = APB_INT_MASK_L;
gc->chip_types[0].regs.enable = APB_INT_ENABLE_L;
gc->chip_types[0].chip.irq_mask = irq_gc_mask_set_bit; gc->chip_types[0].chip.irq_mask = irq_gc_mask_set_bit;
gc->chip_types[0].chip.irq_unmask = irq_gc_mask_clr_bit; gc->chip_types[0].chip.irq_unmask = irq_gc_mask_clr_bit;
gc->chip_types[0].chip.irq_resume = dw_apb_ictl_resume;
if (nrirqs > 32) { if (nrirqs > 32) {
gc->chip_types[1].regs.mask = APB_INT_MASK_H; gc->chip_types[1].regs.mask = APB_INT_MASK_H;
gc->chip_types[1].regs.enable = APB_INT_ENABLE_H;
gc->chip_types[1].chip.irq_mask = irq_gc_mask_set_bit; gc->chip_types[1].chip.irq_mask = irq_gc_mask_set_bit;
gc->chip_types[1].chip.irq_unmask = irq_gc_mask_clr_bit; gc->chip_types[1].chip.irq_unmask = irq_gc_mask_clr_bit;
gc->chip_types[1].chip.irq_resume = dw_apb_ictl_resume;
} }
irq_set_handler_data(irq, gc); irq_set_handler_data(irq, gc);

3
drivers/irqchip/irq-hip04.c
View File

@ -176,8 +176,7 @@ static void __exception_irq_entry hip04_handle_irq(struct pt_regs *regs)
irqnr = irqstat & GICC_IAR_INT_ID_MASK; irqnr = irqstat & GICC_IAR_INT_ID_MASK;
if (likely(irqnr > 15 && irqnr <= HIP04_MAX_IRQS)) { if (likely(irqnr > 15 && irqnr <= HIP04_MAX_IRQS)) {
irqnr = irq_find_mapping(hip04_data.domain, irqnr); handle_domain_irq(hip04_data.domain, irqnr, regs);
handle_IRQ(irqnr, regs);
continue; continue;
} }
if (irqnr < 16) { if (irqnr < 16) {

4
drivers/irqchip/irq-sunxi-nmi.c
View File

@ -50,12 +50,12 @@ static struct sunxi_sc_nmi_reg_offs sun6i_reg_offs = {
static inline void sunxi_sc_nmi_write(struct irq_chip_generic *gc, u32 off, static inline void sunxi_sc_nmi_write(struct irq_chip_generic *gc, u32 off,
u32 val) u32 val)
{ {
irq_reg_writel(val, gc->reg_base + off); irq_reg_writel(gc, val, off);
} }
static inline u32 sunxi_sc_nmi_read(struct irq_chip_generic *gc, u32 off) static inline u32 sunxi_sc_nmi_read(struct irq_chip_generic *gc, u32 off)
{ {
return irq_reg_readl(gc->reg_base + off); return irq_reg_readl(gc, off);
} }
static void sunxi_sc_nmi_handle_irq(unsigned int irq, struct irq_desc *desc) static void sunxi_sc_nmi_handle_irq(unsigned int irq, struct irq_desc *desc)

4
drivers/irqchip/irq-tb10x.c
View File

@ -43,12 +43,12 @@
static inline void ab_irqctl_writereg(struct irq_chip_generic *gc, u32 reg, static inline void ab_irqctl_writereg(struct irq_chip_generic *gc, u32 reg,
u32 val) u32 val)
{ {
irq_reg_writel(val, gc->reg_base + reg); irq_reg_writel(gc, val, reg);
} }
static inline u32 ab_irqctl_readreg(struct irq_chip_generic *gc, u32 reg) static inline u32 ab_irqctl_readreg(struct irq_chip_generic *gc, u32 reg)
{ {
return irq_reg_readl(gc->reg_base + reg); return irq_reg_readl(gc, reg);
} }
static int tb10x_irq_set_type(struct irq_data *data, unsigned int flow_type) static int tb10x_irq_set_type(struct irq_data *data, unsigned int flow_type)

32
include/linux/irq.h
View File

@ -20,6 +20,7 @@
#include <linux/errno.h> #include <linux/errno.h>
#include <linux/topology.h> #include <linux/topology.h>
#include <linux/wait.h> #include <linux/wait.h>
#include <linux/io.h>
#include <asm/irq.h> #include <asm/irq.h>
#include <asm/ptrace.h> #include <asm/ptrace.h>
@ -639,13 +640,6 @@ void arch_teardown_hwirq(unsigned int irq);
void irq_init_desc(unsigned int irq); void irq_init_desc(unsigned int irq);
#endif #endif
#ifndef irq_reg_writel
# define irq_reg_writel(val, addr) writel(val, addr)
#endif
#ifndef irq_reg_readl
# define irq_reg_readl(addr) readl(addr)
#endif
/** /**
* struct irq_chip_regs - register offsets for struct irq_gci * struct irq_chip_regs - register offsets for struct irq_gci
* @enable: Enable register offset to reg_base * @enable: Enable register offset to reg_base
@ -692,6 +686,8 @@ struct irq_chip_type {
* struct irq_chip_generic - Generic irq chip data structure * struct irq_chip_generic - Generic irq chip data structure
* @lock: Lock to protect register and cache data access * @lock: Lock to protect register and cache data access
* @reg_base: Register base address (virtual) * @reg_base: Register base address (virtual)
* @reg_readl: Alternate I/O accessor (defaults to readl if NULL)
* @reg_writel: Alternate I/O accessor (defaults to writel if NULL)
* @irq_base: Interrupt base nr for this chip * @irq_base: Interrupt base nr for this chip
* @irq_cnt: Number of interrupts handled by this chip * @irq_cnt: Number of interrupts handled by this chip
* @mask_cache: Cached mask register shared between all chip types * @mask_cache: Cached mask register shared between all chip types
@ -716,6 +712,8 @@ struct irq_chip_type {
struct irq_chip_generic { struct irq_chip_generic {
raw_spinlock_t lock; raw_spinlock_t lock;
void __iomem *reg_base; void __iomem *reg_base;
u32 (*reg_readl)(void __iomem *addr);
void (*reg_writel)(u32 val, void __iomem *addr);
unsigned int irq_base; unsigned int irq_base;
unsigned int irq_cnt; unsigned int irq_cnt;
u32 mask_cache; u32 mask_cache;
@ -740,12 +738,14 @@ struct irq_chip_generic {
* the parent irq. Usually GPIO implementations * the parent irq. Usually GPIO implementations
* @IRQ_GC_MASK_CACHE_PER_TYPE: Mask cache is chip type private * @IRQ_GC_MASK_CACHE_PER_TYPE: Mask cache is chip type private
* @IRQ_GC_NO_MASK: Do not calculate irq_data->mask * @IRQ_GC_NO_MASK: Do not calculate irq_data->mask
* @IRQ_GC_BE_IO: Use big-endian register accesses (default: LE)
*/ */
enum irq_gc_flags { enum irq_gc_flags {
IRQ_GC_INIT_MASK_CACHE = 1 << 0, IRQ_GC_INIT_MASK_CACHE = 1 << 0,
IRQ_GC_INIT_NESTED_LOCK = 1 << 1, IRQ_GC_INIT_NESTED_LOCK = 1 << 1,
IRQ_GC_MASK_CACHE_PER_TYPE = 1 << 2, IRQ_GC_MASK_CACHE_PER_TYPE = 1 << 2,
IRQ_GC_NO_MASK = 1 << 3, IRQ_GC_NO_MASK = 1 << 3,
IRQ_GC_BE_IO = 1 << 4,
}; };
/* /*
@ -821,4 +821,22 @@ static inline void irq_gc_lock(struct irq_chip_generic *gc) { }
static inline void irq_gc_unlock(struct irq_chip_generic *gc) { } static inline void irq_gc_unlock(struct irq_chip_generic *gc) { }
#endif #endif
static inline void irq_reg_writel(struct irq_chip_generic *gc,
u32 val, int reg_offset)
{
if (gc->reg_writel)
gc->reg_writel(val, gc->reg_base + reg_offset);
else
writel(val, gc->reg_base + reg_offset);
}
static inline u32 irq_reg_readl(struct irq_chip_generic *gc,
int reg_offset)
{
if (gc->reg_readl)
return gc->reg_readl(gc->reg_base + reg_offset);
else
return readl(gc->reg_base + reg_offset);
}
#endif /* _LINUX_IRQ_H */ #endif /* _LINUX_IRQ_H */

36
kernel/irq/generic-chip.c
View File

@ -39,7 +39,7 @@ void irq_gc_mask_disable_reg(struct irq_data *d)
u32 mask = d->mask; u32 mask = d->mask;
irq_gc_lock(gc); irq_gc_lock(gc);
irq_reg_writel(mask, gc->reg_base + ct->regs.disable); irq_reg_writel(gc, mask, ct->regs.disable);
*ct->mask_cache &= ~mask; *ct->mask_cache &= ~mask;
irq_gc_unlock(gc); irq_gc_unlock(gc);
} }
@ -59,7 +59,7 @@ void irq_gc_mask_set_bit(struct irq_data *d)
irq_gc_lock(gc); irq_gc_lock(gc);
*ct->mask_cache |= mask; *ct->mask_cache |= mask;
irq_reg_writel(*ct->mask_cache, gc->reg_base + ct->regs.mask); irq_reg_writel(gc, *ct->mask_cache, ct->regs.mask);
irq_gc_unlock(gc); irq_gc_unlock(gc);
} }
EXPORT_SYMBOL_GPL(irq_gc_mask_set_bit); EXPORT_SYMBOL_GPL(irq_gc_mask_set_bit);
@ -79,7 +79,7 @@ void irq_gc_mask_clr_bit(struct irq_data *d)
irq_gc_lock(gc); irq_gc_lock(gc);
*ct->mask_cache &= ~mask; *ct->mask_cache &= ~mask;
irq_reg_writel(*ct->mask_cache, gc->reg_base + ct->regs.mask); irq_reg_writel(gc, *ct->mask_cache, ct->regs.mask);
irq_gc_unlock(gc); irq_gc_unlock(gc);
} }
EXPORT_SYMBOL_GPL(irq_gc_mask_clr_bit); EXPORT_SYMBOL_GPL(irq_gc_mask_clr_bit);
@ -98,7 +98,7 @@ void irq_gc_unmask_enable_reg(struct irq_data *d)
u32 mask = d->mask; u32 mask = d->mask;
irq_gc_lock(gc); irq_gc_lock(gc);
irq_reg_writel(mask, gc->reg_base + ct->regs.enable); irq_reg_writel(gc, mask, ct->regs.enable);
*ct->mask_cache |= mask; *ct->mask_cache |= mask;
irq_gc_unlock(gc); irq_gc_unlock(gc);
} }
@ -114,7 +114,7 @@ void irq_gc_ack_set_bit(struct irq_data *d)
u32 mask = d->mask; u32 mask = d->mask;
irq_gc_lock(gc); irq_gc_lock(gc);
irq_reg_writel(mask, gc->reg_base + ct->regs.ack); irq_reg_writel(gc, mask, ct->regs.ack);
irq_gc_unlock(gc); irq_gc_unlock(gc);
} }
EXPORT_SYMBOL_GPL(irq_gc_ack_set_bit); EXPORT_SYMBOL_GPL(irq_gc_ack_set_bit);
@ -130,7 +130,7 @@ void irq_gc_ack_clr_bit(struct irq_data *d)
u32 mask = ~d->mask; u32 mask = ~d->mask;
irq_gc_lock(gc); irq_gc_lock(gc);
irq_reg_writel(mask, gc->reg_base + ct->regs.ack); irq_reg_writel(gc, mask, ct->regs.ack);
irq_gc_unlock(gc); irq_gc_unlock(gc);
} }
@ -145,8 +145,8 @@ void irq_gc_mask_disable_reg_and_ack(struct irq_data *d)
u32 mask = d->mask; u32 mask = d->mask;
irq_gc_lock(gc); irq_gc_lock(gc);
irq_reg_writel(mask, gc->reg_base + ct->regs.mask); irq_reg_writel(gc, mask, ct->regs.mask);
irq_reg_writel(mask, gc->reg_base + ct->regs.ack); irq_reg_writel(gc, mask, ct->regs.ack);
irq_gc_unlock(gc); irq_gc_unlock(gc);
} }
@ -161,7 +161,7 @@ void irq_gc_eoi(struct irq_data *d)
u32 mask = d->mask; u32 mask = d->mask;
irq_gc_lock(gc); irq_gc_lock(gc);
irq_reg_writel(mask, gc->reg_base + ct->regs.eoi); irq_reg_writel(gc, mask, ct->regs.eoi);
irq_gc_unlock(gc); irq_gc_unlock(gc);
} }
@ -191,6 +191,16 @@ int irq_gc_set_wake(struct irq_data *d, unsigned int on)
return 0; return 0;
} }
static u32 irq_readl_be(void __iomem *addr)
{
return ioread32be(addr);
}
static void irq_writel_be(u32 val, void __iomem *addr)
{
iowrite32be(val, addr);
}
static void static void
irq_init_generic_chip(struct irq_chip_generic *gc, const char *name, irq_init_generic_chip(struct irq_chip_generic *gc, const char *name,
int num_ct, unsigned int irq_base, int num_ct, unsigned int irq_base,
@ -245,7 +255,7 @@ irq_gc_init_mask_cache(struct irq_chip_generic *gc, enum irq_gc_flags flags)
} }
ct[i].mask_cache = mskptr; ct[i].mask_cache = mskptr;
if (flags & IRQ_GC_INIT_MASK_CACHE) if (flags & IRQ_GC_INIT_MASK_CACHE)
*mskptr = irq_reg_readl(gc->reg_base + mskreg); *mskptr = irq_reg_readl(gc, mskreg);
} }
} }
@ -300,7 +310,13 @@ int irq_alloc_domain_generic_chips(struct irq_domain *d, int irqs_per_chip,
dgc->gc[i] = gc = tmp; dgc->gc[i] = gc = tmp;
irq_init_generic_chip(gc, name, num_ct, i * irqs_per_chip, irq_init_generic_chip(gc, name, num_ct, i * irqs_per_chip,
NULL, handler); NULL, handler);
gc->domain = d; gc->domain = d;
if (gcflags & IRQ_GC_BE_IO) {
gc->reg_readl = &irq_readl_be;
gc->reg_writel = &irq_writel_be;
}
raw_spin_lock_irqsave(&gc_lock, flags); raw_spin_lock_irqsave(&gc_lock, flags);
list_add_tail(&gc->list, &gc_list); list_add_tail(&gc->list, &gc_list);
raw_spin_unlock_irqrestore(&gc_lock, flags); raw_spin_unlock_irqrestore(&gc_lock, flags);