This is to cleanup some hex numbers used in the code and replace
them with defines to make the code cleaner.
Signed-off-by: Feng Kan <f...@apm.com>
Reviewed-by: Anup Patel <apa...@apm.com>
---
drivers/irqchip/irq-gic-common.c | 15 +++++++++------
drivers/irqchip/irq-gic.c | 25 +++++++++++++------------
include/linux/irqchip/arm-gic.h | 15 +++++++++++++++
3 files changed, 37 insertions(+), 18 deletions(-)
diff --git a/drivers/irqchip/irq-gic-common.c b/drivers/irqchip/irq-gic-common.c
index 60ac704..61541ff 100644
--- a/drivers/irqchip/irq-gic-common.c
+++ b/drivers/irqchip/irq-gic-common.c
@@ -74,20 +74,22 @@ void __init gic_dist_config(void __iomem *base, int
gic_irqs,
* Set all global interrupts to be level triggered, active low.
*/
for (i = 32; i < gic_irqs; i += 16)
- writel_relaxed(0, base + GIC_DIST_CONFIG + i / 4);
+ writel_relaxed(GICD_INT_ACTLOW_LVLTRIG,
+ base + GIC_DIST_CONFIG + i / 4);
/*
* Set priority on all global interrupts.
*/
for (i = 32; i < gic_irqs; i += 4)
- writel_relaxed(0xa0a0a0a0, base + GIC_DIST_PRI + i);
+ writel_relaxed(GICD_INT_DEF_PRI_X4, base + GIC_DIST_PRI + i);
/*
* Disable all interrupts. Leave the PPI and SGIs alone
* as they are enabled by redistributor registers.
*/
for (i = 32; i < gic_irqs; i += 32)
- writel_relaxed(0xffffffff, base + GIC_DIST_ENABLE_CLEAR + i /
8);
+ writel_relaxed(GICD_INT_EN_CLR_X32,
+ base + GIC_DIST_ENABLE_CLEAR + i / 8);
if (sync_access)
sync_access();
@@ -101,14 +103,15 @@ void gic_cpu_config(void __iomem *base, void
(*sync_access)(void))
* Deal with the banked PPI and SGI interrupts - disable all
* PPI interrupts, ensure all SGI interrupts are enabled.
*/
- writel_relaxed(0xffff0000, base + GIC_DIST_ENABLE_CLEAR);
- writel_relaxed(0x0000ffff, base + GIC_DIST_ENABLE_SET);
+ writel_relaxed(GICD_INT_EN_CLR_PPI, base + GIC_DIST_ENABLE_CLEAR);
+ writel_relaxed(GICD_INT_EN_SET_SGI, base + GIC_DIST_ENABLE_SET);
/*
* Set priority on PPI and SGI interrupts
*/
for (i = 0; i < 32; i += 4)
- writel_relaxed(0xa0a0a0a0, base + GIC_DIST_PRI + i * 4 / 4);
+ writel_relaxed(GICD_INT_DEF_PRI_X4,
+ base + GIC_DIST_PRI + i * 4 / 4);
if (sync_access)
sync_access();
diff --git a/drivers/irqchip/irq-gic.c b/drivers/irqchip/irq-gic.c
index 508b815..2075d52 100644
--- a/drivers/irqchip/irq-gic.c
+++ b/drivers/irqchip/irq-gic.c
@@ -299,8 +299,8 @@ static void gic_handle_cascade_irq(unsigned int irq, struct
irq_desc *desc)
status = readl_relaxed(gic_data_cpu_base(chip_data) + GIC_CPU_INTACK);
raw_spin_unlock(&irq_controller_lock);
- gic_irq = (status & 0x3ff);
- if (gic_irq == 1023)
+ gic_irq = (status & GICC_IAR_INT_ID_MASK);
+ if (gic_irq == GICC_INT_SPURIOUS)
goto out;
cascade_irq = irq_find_mapping(chip_data->domain, gic_irq);
@@ -361,7 +361,7 @@ static void __init gic_dist_init(struct gic_chip_data *gic)
unsigned int gic_irqs = gic->gic_irqs;
void __iomem *base = gic_data_dist_base(gic);
- writel_relaxed(0, base + GIC_DIST_CTRL);
+ writel_relaxed(GICD_DISABLE, base + GIC_DIST_CTRL);
/*
* Set all global interrupts to this CPU only.
@@ -374,7 +374,7 @@ static void __init gic_dist_init(struct gic_chip_data *gic)
gic_dist_config(base, gic_irqs, NULL);
- writel_relaxed(1, base + GIC_DIST_CTRL);
+ writel_relaxed(GICD_ENABLE, base + GIC_DIST_CTRL);
}
static void gic_cpu_init(struct gic_chip_data *gic)
@@ -401,8 +401,8 @@ static void gic_cpu_init(struct gic_chip_data *gic)
gic_cpu_config(dist_base, NULL);
- writel_relaxed(0xf0, base + GIC_CPU_PRIMASK);
- writel_relaxed(1, base + GIC_CPU_CTRL);
+ writel_relaxed(GICC_INT_PRI_THRESHOLD, base + GIC_CPU_PRIMASK);
+ writel_relaxed(GICC_ENABLE, base + GIC_CPU_CTRL);
}
void gic_cpu_if_down(void)
@@ -468,14 +468,14 @@ static void gic_dist_restore(unsigned int gic_nr)
if (!dist_base)
return;
- writel_relaxed(0, dist_base + GIC_DIST_CTRL);
+ writel_relaxed(GICD_DISABLE, dist_base + GIC_DIST_CTRL);
for (i = 0; i < DIV_ROUND_UP(gic_irqs, 16); i++)
writel_relaxed(gic_data[gic_nr].saved_spi_conf[i],
dist_base + GIC_DIST_CONFIG + i * 4);
for (i = 0; i < DIV_ROUND_UP(gic_irqs, 4); i++)
- writel_relaxed(0xa0a0a0a0,
+ writel_relaxed(GICD_INT_DEF_PRI_X4,
dist_base + GIC_DIST_PRI + i * 4);
for (i = 0; i < DIV_ROUND_UP(gic_irqs, 4); i++)
@@ -486,7 +486,7 @@ static void gic_dist_restore(unsigned int gic_nr)
writel_relaxed(gic_data[gic_nr].saved_spi_enable[i],
dist_base + GIC_DIST_ENABLE_SET + i * 4);
- writel_relaxed(1, dist_base + GIC_DIST_CTRL);
+ writel_relaxed(GICD_ENABLE, dist_base + GIC_DIST_CTRL);
}
static void gic_cpu_save(unsigned int gic_nr)
@@ -540,10 +540,11 @@ static void gic_cpu_restore(unsigned int gic_nr)
writel_relaxed(ptr[i], dist_base + GIC_DIST_CONFIG + i * 4);
for (i = 0; i < DIV_ROUND_UP(32, 4); i++)
- writel_relaxed(0xa0a0a0a0, dist_base + GIC_DIST_PRI + i * 4);
+ writel_relaxed(GICD_INT_DEF_PRI_X4,
+ dist_base + GIC_DIST_PRI + i * 4);
- writel_relaxed(0xf0, cpu_base + GIC_CPU_PRIMASK);
- writel_relaxed(1, cpu_base + GIC_CPU_CTRL);
+ writel_relaxed(GICC_INT_PRI_THRESHOLD, cpu_base + GIC_CPU_PRIMASK);
+ writel_relaxed(GICC_ENABLE, cpu_base + GIC_CPU_CTRL);
}
static int gic_notifier(struct notifier_block *self, unsigned long cmd,
void *v)
diff --git a/include/linux/irqchip/arm-gic.h b/include/linux/irqchip/arm-gic.h
index 45e2d8c..5cb9d41 100644
--- a/include/linux/irqchip/arm-gic.h
+++ b/include/linux/irqchip/arm-gic.h
@@ -21,7 +21,10 @@
#define GIC_CPU_ACTIVEPRIO 0xd0
#define GIC_CPU_IDENT 0xfc
+#define GICC_ENABLE 0x1
+#define GICC_INT_PRI_THRESHOLD 0xf0
#define GICC_IAR_INT_ID_MASK 0x3ff
+#define GICC_INT_SPURIOUS 1023
#define GIC_DIST_CTRL 0x000
#define GIC_DIST_CTR 0x004
@@ -39,6 +42,18 @@
#define GIC_DIST_SGI_PENDING_CLEAR 0xf10
#define GIC_DIST_SGI_PENDING_SET 0xf20
+#define GICD_ENABLE 0x1
+#define GICD_DISABLE 0x0
+#define GICD_INT_ACTLOW_LVLTRIG 0x0
+#define GICD_INT_EN_CLR_X32 0xffffffff
+#define GICD_INT_EN_SET_SGI 0x0000ffff
+#define GICD_INT_EN_CLR_PPI 0xffff0000
+#define GICD_INT_DEF_PRI 0xa0
+#define GICD_INT_DEF_PRI_X4 ((GICD_INT_DEF_PRI << 24) |\
+ (GICD_INT_DEF_PRI << 16) |\
+ (GICD_INT_DEF_PRI << 8) |\
+ GICD_INT_DEF_PRI)
+
#define GICH_HCR 0x0
#define GICH_VTR 0x4
#define GICH_VMCR 0x8
--
1.9.1
--
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