Merge branch 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
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
...
diff --git a/Documentation/devicetree/bindings/interrupt-controller/brcm,bcm7120-l2-intc.txt b/Documentation/devicetree/bindings/interrupt-controller/brcm,bcm7120-l2-intc.txt
index ff812a8..bae1f21 100644
--- a/Documentation/devicetree/bindings/interrupt-controller/brcm,bcm7120-l2-intc.txt
+++ b/Documentation/devicetree/bindings/interrupt-controller/brcm,bcm7120-l2-intc.txt
@@ -13,7 +13,12 @@
or if they will output an interrupt signal at this 2nd level interrupt
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:
@@ -48,7 +53,9 @@
Required properties:
- 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-cells: specifies the number of cells needed to encode an interrupt
source, should be 1.
@@ -59,18 +66,21 @@
- 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
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:
- brcm,irq-can-wake: if present, this means the L2 controller can be used as a
wakeup source for system suspend/resume.
-- brcm,int-fwd-mask: if present, a 32-bits bit mask to configure for the
- interrupts which have a mux gate, typically UARTs. Setting these bits will
- make their respective interrupts outputs bypass this 2nd level interrupt
- controller completely, it completely transparent for the interrupt controller
- parent
+- brcm,int-fwd-mask: if present, a bit mask to configure the interrupts which
+ have a mux gate, typically UARTs. Setting these bits will make their
+ respective interrupt outputs bypass this 2nd level interrupt controller
+ completely; it is completely transparent for the interrupt controller
+ parent. This should have one 32-bit word per enable/status pair.
Example:
diff --git a/arch/arm/mach-bcm/Kconfig b/arch/arm/mach-bcm/Kconfig
index 1bd39b4..aaeec78 100644
--- a/arch/arm/mach-bcm/Kconfig
+++ b/arch/arm/mach-bcm/Kconfig
@@ -143,6 +143,7 @@
select HAVE_ARM_ARCH_TIMER
select BRCMSTB_GISB_ARB
select BRCMSTB_L2_IRQ
+ select BCM7120_L2_IRQ
help
Say Y if you intend to run the kernel on a Broadcom ARM-based STB
chipset.
diff --git a/arch/arm/plat-orion/gpio.c b/arch/arm/plat-orion/gpio.c
index e048f61..14f6e64 100644
--- a/arch/arm/plat-orion/gpio.c
+++ b/arch/arm/plat-orion/gpio.c
@@ -505,9 +505,9 @@
u32 mask = d->mask;
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;
- irq_reg_writel(reg_val, gc->reg_base + ct->regs.mask);
+ irq_reg_writel(gc, reg_val, ct->regs.mask);
irq_gc_unlock(gc);
}
@@ -519,9 +519,9 @@
u32 reg_val;
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;
- irq_reg_writel(reg_val, gc->reg_base + ct->regs.mask);
+ irq_reg_writel(gc, reg_val, ct->regs.mask);
irq_gc_unlock(gc);
}
diff --git a/drivers/irqchip/Kconfig b/drivers/irqchip/Kconfig
index b21f12f..9efe5f1 100644
--- a/drivers/irqchip/Kconfig
+++ b/drivers/irqchip/Kconfig
@@ -48,14 +48,19 @@
select MULTI_IRQ_HANDLER
select SPARSE_IRQ
+config BCM7120_L2_IRQ
+ bool
+ select GENERIC_IRQ_CHIP
+ select IRQ_DOMAIN
+
config BRCMSTB_L2_IRQ
bool
- depends on ARM
select GENERIC_IRQ_CHIP
select IRQ_DOMAIN
config DW_APB_ICTL
bool
+ select GENERIC_IRQ_CHIP
select IRQ_DOMAIN
config IMGPDC_IRQ
diff --git a/drivers/irqchip/Makefile b/drivers/irqchip/Makefile
index 173bb5f..f0909d0 100644
--- a/drivers/irqchip/Makefile
+++ b/drivers/irqchip/Makefile
@@ -35,6 +35,6 @@
obj-$(CONFIG_XTENSA) += irq-xtensa-pic.o
obj-$(CONFIG_XTENSA_MX) += irq-xtensa-mx.o
obj-$(CONFIG_IRQ_CROSSBAR) += irq-crossbar.o
-obj-$(CONFIG_BRCMSTB_L2_IRQ) += irq-brcmstb-l2.o \
- irq-bcm7120-l2.o
+obj-$(CONFIG_BCM7120_L2_IRQ) += irq-bcm7120-l2.o
+obj-$(CONFIG_BRCMSTB_L2_IRQ) += irq-brcmstb-l2.o
obj-$(CONFIG_KEYSTONE_IRQ) += irq-keystone.o
diff --git a/drivers/irqchip/irq-armada-370-xp.c b/drivers/irqchip/irq-armada-370-xp.c
index b907550..a3fd2b3 100644
--- a/drivers/irqchip/irq-armada-370-xp.c
+++ b/drivers/irqchip/irq-armada-370-xp.c
@@ -268,7 +268,7 @@
writel(reg, main_int_base + ARMADA_370_XP_INT_SOURCE_CTL(hwirq));
raw_spin_unlock(&irq_controller_lock);
- return 0;
+ return IRQ_SET_MASK_OK;
}
#endif
diff --git a/drivers/irqchip/irq-atmel-aic-common.c b/drivers/irqchip/irq-atmel-aic-common.c
index cc4f9d8..d111ac7 100644
--- a/drivers/irqchip/irq-atmel-aic-common.c
+++ b/drivers/irqchip/irq-atmel-aic-common.c
@@ -167,6 +167,32 @@
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)
{
struct device_node *root = of_find_node_by_path("/");
diff --git a/drivers/irqchip/irq-atmel-aic-common.h b/drivers/irqchip/irq-atmel-aic-common.h
index 90aa00e..603f0a9 100644
--- a/drivers/irqchip/irq-atmel-aic-common.h
+++ b/drivers/irqchip/irq-atmel-aic-common.h
@@ -34,6 +34,8 @@
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);
#endif /* __IRQ_ATMEL_AIC_COMMON_H */
diff --git a/drivers/irqchip/irq-atmel-aic.c b/drivers/irqchip/irq-atmel-aic.c
index 9a2cf3c..dae3604 100644
--- a/drivers/irqchip/irq-atmel-aic.c
+++ b/drivers/irqchip/irq-atmel-aic.c
@@ -65,11 +65,11 @@
u32 irqnr;
u32 irqstat;
- irqnr = irq_reg_readl(gc->reg_base + AT91_AIC_IVR);
- irqstat = irq_reg_readl(gc->reg_base + AT91_AIC_ISR);
+ irqnr = irq_reg_readl(gc, AT91_AIC_IVR);
+ irqstat = irq_reg_readl(gc, AT91_AIC_ISR);
if (!irqstat)
- irq_reg_writel(0, gc->reg_base + AT91_AIC_EOICR);
+ irq_reg_writel(gc, 0, AT91_AIC_EOICR);
else
handle_domain_irq(aic_domain, irqnr, regs);
}
@@ -80,7 +80,7 @@
/* Enable interrupt on AIC5 */
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);
return 0;
@@ -92,12 +92,12 @@
unsigned int smr;
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);
if (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;
}
@@ -108,8 +108,8 @@
struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d);
irq_gc_lock(gc);
- irq_reg_writel(gc->mask_cache, gc->reg_base + AT91_AIC_IDCR);
- irq_reg_writel(gc->wake_active, gc->reg_base + AT91_AIC_IECR);
+ irq_reg_writel(gc, gc->mask_cache, AT91_AIC_IDCR);
+ irq_reg_writel(gc, gc->wake_active, AT91_AIC_IECR);
irq_gc_unlock(gc);
}
@@ -118,8 +118,8 @@
struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d);
irq_gc_lock(gc);
- irq_reg_writel(gc->wake_active, gc->reg_base + AT91_AIC_IDCR);
- irq_reg_writel(gc->mask_cache, gc->reg_base + AT91_AIC_IECR);
+ irq_reg_writel(gc, gc->wake_active, AT91_AIC_IDCR);
+ irq_reg_writel(gc, gc->mask_cache, AT91_AIC_IECR);
irq_gc_unlock(gc);
}
@@ -128,8 +128,8 @@
struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d);
irq_gc_lock(gc);
- irq_reg_writel(0xffffffff, gc->reg_base + AT91_AIC_IDCR);
- irq_reg_writel(0xffffffff, gc->reg_base + AT91_AIC_ICCR);
+ irq_reg_writel(gc, 0xffffffff, AT91_AIC_IDCR);
+ irq_reg_writel(gc, 0xffffffff, AT91_AIC_ICCR);
irq_gc_unlock(gc);
}
#else
@@ -148,24 +148,24 @@
* will not Lock out nIRQ
*/
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.
* When there is no current interrupt, the IRQ Vector Register
* 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 */
- irq_reg_writel(0, gc->reg_base + AT91_AIC_DCR);
+ irq_reg_writel(gc, 0, AT91_AIC_DCR);
/* Disable and clear all interrupts initially */
- irq_reg_writel(0xffffffff, gc->reg_base + AT91_AIC_IDCR);
- irq_reg_writel(0xffffffff, gc->reg_base + AT91_AIC_ICCR);
+ irq_reg_writel(gc, 0xffffffff, AT91_AIC_IDCR);
+ irq_reg_writel(gc, 0xffffffff, AT91_AIC_ICCR);
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,
@@ -195,10 +195,10 @@
gc = dgc->gc[idx];
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);
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);
return ret;
@@ -209,16 +209,32 @@
.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);
}
+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[] = {
- { .compatible = "atmel,at91sam9g45", .data = at91sam9_aic_irq_fixup },
- { .compatible = "atmel,at91sam9n12", .data = at91sam9_aic_irq_fixup },
- { .compatible = "atmel,at91sam9rl", .data = at91sam9_aic_irq_fixup },
- { .compatible = "atmel,at91sam9x5", .data = at91sam9_aic_irq_fixup },
+ { .compatible = "atmel,at91rm9200", .data = at91rm9200_aic_irq_fixup },
+ { .compatible = "atmel,at91sam9g45", .data = at91sam9g45_aic_irq_fixup },
+ { .compatible = "atmel,at91sam9n12", .data = at91rm9200_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 */ },
};
diff --git a/drivers/irqchip/irq-atmel-aic5.c b/drivers/irqchip/irq-atmel-aic5.c
index a11aae8..a2e8c3f 100644
--- a/drivers/irqchip/irq-atmel-aic5.c
+++ b/drivers/irqchip/irq-atmel-aic5.c
@@ -75,11 +75,11 @@
u32 irqnr;
u32 irqstat;
- irqnr = irq_reg_readl(gc->reg_base + AT91_AIC5_IVR);
- irqstat = irq_reg_readl(gc->reg_base + AT91_AIC5_ISR);
+ irqnr = irq_reg_readl(gc, AT91_AIC5_IVR);
+ irqstat = irq_reg_readl(gc, AT91_AIC5_ISR);
if (!irqstat)
- irq_reg_writel(0, gc->reg_base + AT91_AIC5_EOICR);
+ irq_reg_writel(gc, 0, AT91_AIC5_EOICR);
else
handle_domain_irq(aic5_domain, irqnr, regs);
}
@@ -92,8 +92,8 @@
/* Disable interrupt on AIC5 */
irq_gc_lock(gc);
- irq_reg_writel(d->hwirq, gc->reg_base + AT91_AIC5_SSR);
- irq_reg_writel(1, gc->reg_base + AT91_AIC5_IDCR);
+ irq_reg_writel(gc, d->hwirq, AT91_AIC5_SSR);
+ irq_reg_writel(gc, 1, AT91_AIC5_IDCR);
gc->mask_cache &= ~d->mask;
irq_gc_unlock(gc);
}
@@ -106,8 +106,8 @@
/* Enable interrupt on AIC5 */
irq_gc_lock(gc);
- irq_reg_writel(d->hwirq, gc->reg_base + AT91_AIC5_SSR);
- irq_reg_writel(1, gc->reg_base + AT91_AIC5_IECR);
+ irq_reg_writel(gc, d->hwirq, AT91_AIC5_SSR);
+ irq_reg_writel(gc, 1, AT91_AIC5_IECR);
gc->mask_cache |= d->mask;
irq_gc_unlock(gc);
}
@@ -120,8 +120,8 @@
/* Enable interrupt on AIC5 */
irq_gc_lock(gc);
- irq_reg_writel(d->hwirq, gc->reg_base + AT91_AIC5_SSR);
- irq_reg_writel(1, gc->reg_base + AT91_AIC5_ISCR);
+ irq_reg_writel(gc, d->hwirq, AT91_AIC5_SSR);
+ irq_reg_writel(gc, 1, AT91_AIC5_ISCR);
irq_gc_unlock(gc);
return 0;
@@ -136,11 +136,11 @@
int ret;
irq_gc_lock(gc);
- irq_reg_writel(d->hwirq, gc->reg_base + AT91_AIC5_SSR);
- smr = irq_reg_readl(gc->reg_base + AT91_AIC5_SMR);
+ irq_reg_writel(gc, d->hwirq, AT91_AIC5_SSR);
+ smr = irq_reg_readl(gc, AT91_AIC5_SMR);
ret = aic_common_set_type(d, type, &smr);
if (!ret)
- irq_reg_writel(smr, gc->reg_base + AT91_AIC5_SMR);
+ irq_reg_writel(gc, smr, AT91_AIC5_SMR);
irq_gc_unlock(gc);
return ret;
@@ -162,12 +162,11 @@
if ((mask & gc->mask_cache) == (mask & gc->wake_active))
continue;
- irq_reg_writel(i + gc->irq_base,
- bgc->reg_base + AT91_AIC5_SSR);
+ irq_reg_writel(bgc, i + gc->irq_base, AT91_AIC5_SSR);
if (mask & gc->wake_active)
- irq_reg_writel(1, bgc->reg_base + AT91_AIC5_IECR);
+ irq_reg_writel(bgc, 1, AT91_AIC5_IECR);
else
- irq_reg_writel(1, bgc->reg_base + AT91_AIC5_IDCR);
+ irq_reg_writel(bgc, 1, AT91_AIC5_IDCR);
}
irq_gc_unlock(bgc);
}
@@ -187,12 +186,11 @@
if ((mask & gc->mask_cache) == (mask & gc->wake_active))
continue;
- irq_reg_writel(i + gc->irq_base,
- bgc->reg_base + AT91_AIC5_SSR);
+ irq_reg_writel(bgc, i + gc->irq_base, AT91_AIC5_SSR);
if (mask & gc->mask_cache)
- irq_reg_writel(1, bgc->reg_base + AT91_AIC5_IECR);
+ irq_reg_writel(bgc, 1, AT91_AIC5_IECR);
else
- irq_reg_writel(1, bgc->reg_base + AT91_AIC5_IDCR);
+ irq_reg_writel(bgc, 1, AT91_AIC5_IDCR);
}
irq_gc_unlock(bgc);
}
@@ -207,10 +205,9 @@
irq_gc_lock(bgc);
for (i = 0; i < dgc->irqs_per_chip; i++) {
- irq_reg_writel(i + gc->irq_base,
- bgc->reg_base + AT91_AIC5_SSR);
- irq_reg_writel(1, bgc->reg_base + AT91_AIC5_IDCR);
- irq_reg_writel(1, bgc->reg_base + AT91_AIC5_ICCR);
+ irq_reg_writel(bgc, i + gc->irq_base, AT91_AIC5_SSR);
+ irq_reg_writel(bgc, 1, AT91_AIC5_IDCR);
+ irq_reg_writel(bgc, 1, AT91_AIC5_ICCR);
}
irq_gc_unlock(bgc);
}
@@ -230,24 +227,24 @@
* will not Lock out nIRQ
*/
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.
* When there is no current interrupt, the IRQ Vector Register
* 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 */
- irq_reg_writel(0, gc->reg_base + AT91_AIC5_DCR);
+ irq_reg_writel(gc, 0, AT91_AIC5_DCR);
/* Disable and clear all interrupts initially */
for (i = 0; i < domain->revmap_size; i++) {
- irq_reg_writel(i, gc->reg_base + AT91_AIC5_SSR);
- irq_reg_writel(i, gc->reg_base + AT91_AIC5_SVR);
- irq_reg_writel(1, gc->reg_base + AT91_AIC5_IDCR);
- irq_reg_writel(1, gc->reg_base + AT91_AIC5_ICCR);
+ irq_reg_writel(gc, i, AT91_AIC5_SSR);
+ irq_reg_writel(gc, i, AT91_AIC5_SVR);
+ irq_reg_writel(gc, 1, AT91_AIC5_IDCR);
+ irq_reg_writel(gc, 1, AT91_AIC5_ICCR);
}
}
@@ -273,11 +270,11 @@
gc = dgc->gc[0];
irq_gc_lock(gc);
- irq_reg_writel(*out_hwirq, gc->reg_base + AT91_AIC5_SSR);
- smr = irq_reg_readl(gc->reg_base + AT91_AIC5_SMR);
+ irq_reg_writel(gc, *out_hwirq, AT91_AIC5_SSR);
+ smr = irq_reg_readl(gc, AT91_AIC5_SMR);
ret = aic_common_set_priority(intspec[2], &smr);
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);
return ret;
diff --git a/drivers/irqchip/irq-bcm7120-l2.c b/drivers/irqchip/irq-bcm7120-l2.c
index 5fb38a2..8eec8e1 100644
--- a/drivers/irqchip/irq-bcm7120-l2.c
+++ b/drivers/irqchip/irq-bcm7120-l2.c
@@ -13,6 +13,7 @@
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/module.h>
+#include <linux/kconfig.h>
#include <linux/platform_device.h>
#include <linux/of.h>
#include <linux/of_irq.h>
@@ -23,47 +24,52 @@
#include <linux/io.h>
#include <linux/irqdomain.h>
#include <linux/reboot.h>
+#include <linux/bitops.h>
#include <linux/irqchip/chained_irq.h>
#include "irqchip.h"
-#include <asm/mach/irq.h>
-
/* Register offset in the L2 interrupt controller */
#define IRQEN 0x00
#define IRQSTAT 0x04
+#define MAX_WORDS 4
+#define IRQS_PER_WORD 32
+
struct bcm7120_l2_intc_data {
- void __iomem *base;
+ unsigned int n_words;
+ void __iomem *base[MAX_WORDS];
struct irq_domain *domain;
bool can_wake;
- u32 irq_fwd_mask;
- u32 irq_map_mask;
- u32 saved_mask;
+ u32 irq_fwd_mask[MAX_WORDS];
+ u32 irq_map_mask[MAX_WORDS];
};
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 irq_chip *chip = irq_desc_get_chip(desc);
- u32 status;
+ unsigned int idx;
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) {
- do_bad_IRQ(irq, desc);
- goto out;
+ irq_gc_lock(gc);
+ pending = irq_reg_readl(gc, IRQSTAT) & gc->mask_cache;
+ 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);
}
@@ -71,26 +77,20 @@
{
struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d);
struct bcm7120_l2_intc_data *b = gc->private;
- u32 reg;
irq_gc_lock(gc);
- /* Save the current mask and the interrupt forward mask */
- b->saved_mask = __raw_readl(b->base) | b->irq_fwd_mask;
- if (b->can_wake) {
- reg = b->saved_mask | gc->wake_active;
- __raw_writel(reg, b->base);
- }
+ if (b->can_wake)
+ irq_reg_writel(gc, gc->mask_cache | gc->wake_active, IRQEN);
irq_gc_unlock(gc);
}
static void bcm7120_l2_intc_resume(struct irq_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 */
irq_gc_lock(gc);
- __raw_writel(b->saved_mask, b->base);
+ irq_reg_writel(gc, gc->mask_cache, IRQEN);
irq_gc_unlock(gc);
}
@@ -99,6 +99,7 @@
int irq, const __be32 *map_mask)
{
int parent_irq;
+ unsigned int idx;
parent_irq = irq_of_parse_and_map(dn, irq);
if (!parent_irq) {
@@ -106,7 +107,12 @@
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_chained_handler(parent_irq, bcm7120_l2_intc_irq_handle);
@@ -123,26 +129,41 @@
struct irq_chip_type *ct;
const __be32 *map_mask;
int num_parent_irqs;
- int ret = 0, len, irq;
+ int ret = 0, len;
+ unsigned int idx, irq, flags;
data = kzalloc(sizeof(*data), GFP_KERNEL);
if (!data)
return -ENOMEM;
- data->base = of_iomap(dn, 0);
- if (!data->base) {
+ for (idx = 0; idx < MAX_WORDS; idx++) {
+ 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");
ret = -ENOMEM;
- goto out_free;
+ goto out_unmap;
}
- if (of_property_read_u32(dn, "brcm,int-fwd-mask", &data->irq_fwd_mask))
- data->irq_fwd_mask = 0;
-
- /* Enable all interrupt specified in the interrupt forward mask and have
- * the other disabled
+ /* Enable all interrupts specified in the interrupt forward mask;
+ * disable all others. If the property doesn't exist (-EINVAL),
+ * assume all zeroes.
*/
- __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);
if (num_parent_irqs <= 0) {
@@ -152,7 +173,8 @@
}
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");
ret = -EINVAL;
goto out_unmap;
@@ -164,56 +186,70 @@
goto out_unmap;
}
- data->domain = irq_domain_add_linear(dn, 32,
- &irq_generic_chip_ops, NULL);
+ data->domain = irq_domain_add_linear(dn, IRQS_PER_WORD * data->n_words,
+ &irq_generic_chip_ops, NULL);
if (!data->domain) {
ret = -ENOMEM;
goto out_unmap;
}
- ret = irq_alloc_domain_generic_chips(data->domain, 32, 1,
- dn->full_name, handle_level_irq, clr, 0,
- IRQ_GC_INIT_MASK_CACHE);
+ /* MIPS chips strapped for BE will automagically configure the
+ * peripheral registers for CPU-native byte order.
+ */
+ 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) {
pr_err("failed to allocate generic irq chip\n");
goto out_free_domain;
}
- gc = irq_get_domain_generic_chip(data->domain, 0);
- 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")) {
+ if (of_property_read_bool(dn, "brcm,irq-can-wake"))
data->can_wake = true;
- /* 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;
+
+ for (idx = 0; idx < data->n_words; idx++) {
+ irq = idx * IRQS_PER_WORD;
+ gc = irq_get_domain_generic_chip(data->domain, irq);
+
+ 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",
- data->base, num_parent_irqs);
+ data->base[0], num_parent_irqs);
return 0;
out_free_domain:
irq_domain_remove(data->domain);
out_unmap:
- iounmap(data->base);
-out_free:
+ for (idx = 0; idx < MAX_WORDS; idx++) {
+ if (data->base[idx])
+ iounmap(data->base[idx]);
+ }
kfree(data);
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);
diff --git a/drivers/irqchip/irq-brcmstb-l2.c b/drivers/irqchip/irq-brcmstb-l2.c
index 14691a4..313c2c6 100644
--- a/drivers/irqchip/irq-brcmstb-l2.c
+++ b/drivers/irqchip/irq-brcmstb-l2.c
@@ -18,7 +18,9 @@
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/module.h>
+#include <linux/kconfig.h>
#include <linux/platform_device.h>
+#include <linux/spinlock.h>
#include <linux/of.h>
#include <linux/of_irq.h>
#include <linux/of_address.h>
@@ -30,8 +32,6 @@
#include <linux/irqchip.h>
#include <linux/irqchip/chained_irq.h>
-#include <asm/mach/irq.h>
-
#include "irqchip.h"
/* Register offsets in the L2 interrupt controller */
@@ -54,23 +54,26 @@
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 irq_chip_generic *gc = irq_get_domain_generic_chip(b->domain, 0);
struct irq_chip *chip = irq_desc_get_chip(desc);
u32 status;
chained_irq_enter(chip, desc);
- status = __raw_readl(b->base + CPU_STATUS) &
- ~(__raw_readl(b->base + CPU_MASK_STATUS));
+ status = irq_reg_readl(gc, CPU_STATUS) &
+ ~(irq_reg_readl(gc, CPU_MASK_STATUS));
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;
}
do {
irq = ffs(status) - 1;
/* ack at our level */
- __raw_writel(1 << irq, b->base + CPU_CLEAR);
+ irq_reg_writel(gc, 1 << irq, CPU_CLEAR);
status &= ~(1 << irq);
generic_handle_irq(irq_find_mapping(b->domain, irq));
} while (status);
@@ -85,12 +88,12 @@
irq_gc_lock(gc);
/* 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) {
/* Program the wakeup mask */
- __raw_writel(~gc->wake_active, b->base + CPU_MASK_SET);
- __raw_writel(gc->wake_active, b->base + CPU_MASK_CLEAR);
+ irq_reg_writel(gc, ~gc->wake_active, CPU_MASK_SET);
+ irq_reg_writel(gc, gc->wake_active, CPU_MASK_CLEAR);
}
irq_gc_unlock(gc);
}
@@ -102,11 +105,11 @@
irq_gc_lock(gc);
/* 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 */
- __raw_writel(b->saved_mask, b->base + CPU_MASK_SET);
- __raw_writel(~b->saved_mask, b->base + CPU_MASK_CLEAR);
+ irq_reg_writel(gc, b->saved_mask, CPU_MASK_SET);
+ irq_reg_writel(gc, ~b->saved_mask, CPU_MASK_CLEAR);
irq_gc_unlock(gc);
}
@@ -118,6 +121,7 @@
struct irq_chip_generic *gc;
struct irq_chip_type *ct;
int ret;
+ unsigned int flags;
data = kzalloc(sizeof(*data), GFP_KERNEL);
if (!data)
@@ -131,8 +135,8 @@
}
/* Disable all interrupts by default */
- __raw_writel(0xffffffff, data->base + CPU_MASK_SET);
- __raw_writel(0xffffffff, data->base + CPU_CLEAR);
+ writel(0xffffffff, data->base + CPU_MASK_SET);
+ writel(0xffffffff, data->base + CPU_CLEAR);
data->parent_irq = irq_of_parse_and_map(np, 0);
if (!data->parent_irq) {
@@ -148,9 +152,16 @@
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 */
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) {
pr_err("failed to allocate generic irq chip\n");
goto out_free_domain;
diff --git a/drivers/irqchip/irq-dw-apb-ictl.c b/drivers/irqchip/irq-dw-apb-ictl.c
index 31e231e..53bb732 100644
--- a/drivers/irqchip/irq-dw-apb-ictl.c
+++ b/drivers/irqchip/irq-dw-apb-ictl.c
@@ -50,6 +50,21 @@
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,
struct device_node *parent)
{
@@ -94,16 +109,16 @@
*/
/* mask and enable all interrupts */
- writel(~0, iobase + APB_INT_MASK_L);
- writel(~0, iobase + APB_INT_MASK_H);
- writel(~0, iobase + APB_INT_ENABLE_L);
- writel(~0, iobase + APB_INT_ENABLE_H);
+ writel_relaxed(~0, iobase + APB_INT_MASK_L);
+ writel_relaxed(~0, iobase + APB_INT_MASK_H);
+ writel_relaxed(~0, iobase + APB_INT_ENABLE_L);
+ 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)
nrirqs = 32 + fls(reg);
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,
&irq_generic_chip_ops, NULL);
@@ -115,6 +130,7 @@
ret = irq_alloc_domain_generic_chips(domain, 32, (nrirqs > 32) ? 2 : 1,
np->name, handle_level_irq, clr, 0,
+ IRQ_GC_MASK_CACHE_PER_TYPE |
IRQ_GC_INIT_MASK_CACHE);
if (ret) {
pr_err("%s: unable to alloc irq domain gc\n", np->full_name);
@@ -126,13 +142,17 @@
gc->reg_base = iobase;
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_unmask = irq_gc_mask_clr_bit;
+ gc->chip_types[0].chip.irq_resume = dw_apb_ictl_resume;
if (nrirqs > 32) {
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_unmask = irq_gc_mask_clr_bit;
+ gc->chip_types[1].chip.irq_resume = dw_apb_ictl_resume;
}
irq_set_handler_data(irq, gc);
diff --git a/drivers/irqchip/irq-hip04.c b/drivers/irqchip/irq-hip04.c
index 9c8f8335..29b8f21 100644
--- a/drivers/irqchip/irq-hip04.c
+++ b/drivers/irqchip/irq-hip04.c
@@ -176,8 +176,7 @@
irqnr = irqstat & GICC_IAR_INT_ID_MASK;
if (likely(irqnr > 15 && irqnr <= HIP04_MAX_IRQS)) {
- irqnr = irq_find_mapping(hip04_data.domain, irqnr);
- handle_IRQ(irqnr, regs);
+ handle_domain_irq(hip04_data.domain, irqnr, regs);
continue;
}
if (irqnr < 16) {
diff --git a/drivers/irqchip/irq-sunxi-nmi.c b/drivers/irqchip/irq-sunxi-nmi.c
index 12f547a..4a9ce5b 100644
--- a/drivers/irqchip/irq-sunxi-nmi.c
+++ b/drivers/irqchip/irq-sunxi-nmi.c
@@ -50,12 +50,12 @@
static inline void sunxi_sc_nmi_write(struct irq_chip_generic *gc, u32 off,
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)
{
- 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)
diff --git a/drivers/irqchip/irq-tb10x.c b/drivers/irqchip/irq-tb10x.c
index 7c44c99..accc200 100644
--- a/drivers/irqchip/irq-tb10x.c
+++ b/drivers/irqchip/irq-tb10x.c
@@ -43,12 +43,12 @@
static inline void ab_irqctl_writereg(struct irq_chip_generic *gc, u32 reg,
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)
{
- 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)
diff --git a/include/linux/irq.h b/include/linux/irq.h
index 03f48d9..8588e5e 100644
--- a/include/linux/irq.h
+++ b/include/linux/irq.h
@@ -20,6 +20,7 @@
#include <linux/errno.h>
#include <linux/topology.h>
#include <linux/wait.h>
+#include <linux/io.h>
#include <asm/irq.h>
#include <asm/ptrace.h>
@@ -639,13 +640,6 @@
void irq_init_desc(unsigned int irq);
#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
* @enable: Enable register offset to reg_base
@@ -692,6 +686,8 @@
* struct irq_chip_generic - Generic irq chip data structure
* @lock: Lock to protect register and cache data access
* @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_cnt: Number of interrupts handled by this chip
* @mask_cache: Cached mask register shared between all chip types
@@ -716,6 +712,8 @@
struct irq_chip_generic {
raw_spinlock_t lock;
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_cnt;
u32 mask_cache;
@@ -740,12 +738,14 @@
* the parent irq. Usually GPIO implementations
* @IRQ_GC_MASK_CACHE_PER_TYPE: Mask cache is chip type private
* @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 {
IRQ_GC_INIT_MASK_CACHE = 1 << 0,
IRQ_GC_INIT_NESTED_LOCK = 1 << 1,
IRQ_GC_MASK_CACHE_PER_TYPE = 1 << 2,
IRQ_GC_NO_MASK = 1 << 3,
+ IRQ_GC_BE_IO = 1 << 4,
};
/*
@@ -821,4 +821,22 @@
static inline void irq_gc_unlock(struct irq_chip_generic *gc) { }
#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 */
diff --git a/kernel/irq/generic-chip.c b/kernel/irq/generic-chip.c
index cf80e7b..61024e8 100644
--- a/kernel/irq/generic-chip.c
+++ b/kernel/irq/generic-chip.c
@@ -39,7 +39,7 @@
u32 mask = d->mask;
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;
irq_gc_unlock(gc);
}
@@ -59,7 +59,7 @@
irq_gc_lock(gc);
*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);
}
EXPORT_SYMBOL_GPL(irq_gc_mask_set_bit);
@@ -79,7 +79,7 @@
irq_gc_lock(gc);
*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);
}
EXPORT_SYMBOL_GPL(irq_gc_mask_clr_bit);
@@ -98,7 +98,7 @@
u32 mask = d->mask;
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;
irq_gc_unlock(gc);
}
@@ -114,7 +114,7 @@
u32 mask = d->mask;
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);
}
EXPORT_SYMBOL_GPL(irq_gc_ack_set_bit);
@@ -130,7 +130,7 @@
u32 mask = ~d->mask;
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);
}
@@ -145,8 +145,8 @@
u32 mask = d->mask;
irq_gc_lock(gc);
- irq_reg_writel(mask, gc->reg_base + ct->regs.mask);
- irq_reg_writel(mask, gc->reg_base + ct->regs.ack);
+ irq_reg_writel(gc, mask, ct->regs.mask);
+ irq_reg_writel(gc, mask, ct->regs.ack);
irq_gc_unlock(gc);
}
@@ -161,7 +161,7 @@
u32 mask = d->mask;
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);
}
@@ -191,6 +191,16 @@
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
irq_init_generic_chip(struct irq_chip_generic *gc, const char *name,
int num_ct, unsigned int irq_base,
@@ -245,7 +255,7 @@
}
ct[i].mask_cache = mskptr;
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 @@
dgc->gc[i] = gc = tmp;
irq_init_generic_chip(gc, name, num_ct, i * irqs_per_chip,
NULL, handler);
+
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);
list_add_tail(&gc->list, &gc_list);
raw_spin_unlock_irqrestore(&gc_lock, flags);