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Message-Id: <20240617111841.2529370-3-mark.rutland@arm.com>
Date: Mon, 17 Jun 2024 12:18:38 +0100
From: Mark Rutland <mark.rutland@....com>
To: linux-arm-kernel@...ts.infradead.org
Cc: alexandru.elisei@....com,
catalin.marinas@....com,
linux-kernel@...r.kernel.org,
mark.rutland@....com,
maz@...nel.org,
tglx@...utronix.de,
will@...nel.org
Subject: [PATCH v2 2/5] irqchip/gic-common: Remove sync_access callback
The gic_configure_irq(), gic_dist_config(), and gic_cpu_config()
functions each take an optional "sync_access" callback, but in almost
all cases this is not used. The only user is the GICv3 driver's
gic_cpu_init() function, which uses gic_redist_wait_for_rwp() as the
"sync_access" callback for gic_cpu_config().
It would be simpler and clearer to remove the callback and have the
GICv3 driver call gic_redist_wait_for_rwp() explicitly after
gic_cpu_config().
Remove the "sync_access" callback, and call gic_redist_wait_for_rwp()
explicitly in the GICv3 driver.
There should be no functional change as a result of this patch.
Signed-off-by: Mark Rutland <mark.rutland@....com>
Cc: Alexandru Elisei <alexandru.elisei@....com>
Cc: Catalin Marinas <catalin.marinas@....com>
Cc: Marc Zyngier <maz@...nel.org>
Cc: Thomas Gleixner <tglx@...utronix.de>
Cc: Will Deacon <will@...nel.org>
Reviewed-by: Marc Zyngier <maz@...nel.org>
Tested-by: Marc Zyngier <maz@...nel.org>
---
drivers/irqchip/irq-gic-common.c | 16 +++-------------
drivers/irqchip/irq-gic-common.h | 7 +++----
drivers/irqchip/irq-gic-v3.c | 7 ++++---
drivers/irqchip/irq-gic.c | 6 +++---
drivers/irqchip/irq-hip04.c | 6 +++---
5 files changed, 16 insertions(+), 26 deletions(-)
diff --git a/drivers/irqchip/irq-gic-common.c b/drivers/irqchip/irq-gic-common.c
index afd6a1841715a..4ed17620dc4d7 100644
--- a/drivers/irqchip/irq-gic-common.c
+++ b/drivers/irqchip/irq-gic-common.c
@@ -45,7 +45,7 @@ void gic_enable_quirks(u32 iidr, const struct gic_quirk *quirks,
}
int gic_configure_irq(unsigned int irq, unsigned int type,
- void __iomem *base, void (*sync_access)(void))
+ void __iomem *base)
{
u32 confmask = 0x2 << ((irq % 16) * 2);
u32 confoff = (irq / 16) * 4;
@@ -84,14 +84,10 @@ int gic_configure_irq(unsigned int irq, unsigned int type,
raw_spin_unlock_irqrestore(&irq_controller_lock, flags);
- if (sync_access)
- sync_access();
-
return ret;
}
-void gic_dist_config(void __iomem *base, int gic_irqs,
- void (*sync_access)(void))
+void gic_dist_config(void __iomem *base, int gic_irqs)
{
unsigned int i;
@@ -118,12 +114,9 @@ void gic_dist_config(void __iomem *base, int gic_irqs,
writel_relaxed(GICD_INT_EN_CLR_X32,
base + GIC_DIST_ENABLE_CLEAR + i / 8);
}
-
- if (sync_access)
- sync_access();
}
-void gic_cpu_config(void __iomem *base, int nr, void (*sync_access)(void))
+void gic_cpu_config(void __iomem *base, int nr)
{
int i;
@@ -144,7 +137,4 @@ void gic_cpu_config(void __iomem *base, int nr, void (*sync_access)(void))
for (i = 0; i < nr; i += 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-common.h b/drivers/irqchip/irq-gic-common.h
index f407cce9ecaaa..c230175dd584c 100644
--- a/drivers/irqchip/irq-gic-common.h
+++ b/drivers/irqchip/irq-gic-common.h
@@ -20,10 +20,9 @@ struct gic_quirk {
};
int gic_configure_irq(unsigned int irq, unsigned int type,
- void __iomem *base, void (*sync_access)(void));
-void gic_dist_config(void __iomem *base, int gic_irqs,
- void (*sync_access)(void));
-void gic_cpu_config(void __iomem *base, int nr, void (*sync_access)(void));
+ void __iomem *base);
+void gic_dist_config(void __iomem *base, int gic_irqs);
+void gic_cpu_config(void __iomem *base, int nr);
void gic_enable_quirks(u32 iidr, const struct gic_quirk *quirks,
void *data);
void gic_enable_of_quirks(const struct device_node *np,
diff --git a/drivers/irqchip/irq-gic-v3.c b/drivers/irqchip/irq-gic-v3.c
index 6fb276504bcc8..d95dda2383fb5 100644
--- a/drivers/irqchip/irq-gic-v3.c
+++ b/drivers/irqchip/irq-gic-v3.c
@@ -670,7 +670,7 @@ static int gic_set_type(struct irq_data *d, unsigned int type)
offset = convert_offset_index(d, GICD_ICFGR, &index);
- ret = gic_configure_irq(index, type, base + offset, NULL);
+ ret = gic_configure_irq(index, type, base + offset);
if (ret && (range == PPI_RANGE || range == EPPI_RANGE)) {
/* Misconfigured PPIs are usually not fatal */
pr_warn("GIC: PPI INTID%ld is secure or misconfigured\n", irq);
@@ -940,7 +940,7 @@ static void __init gic_dist_init(void)
writel_relaxed(GICD_INT_DEF_PRI_X4, base + GICD_IPRIORITYRnE + i);
/* Now do the common stuff */
- gic_dist_config(base, GIC_LINE_NR, NULL);
+ gic_dist_config(base, GIC_LINE_NR);
val = GICD_CTLR_ARE_NS | GICD_CTLR_ENABLE_G1A | GICD_CTLR_ENABLE_G1;
if (gic_data.rdists.gicd_typer2 & GICD_TYPER2_nASSGIcap) {
@@ -1282,7 +1282,8 @@ static void gic_cpu_init(void)
for (i = 0; i < gic_data.ppi_nr + SGI_NR; i += 32)
writel_relaxed(~0, rbase + GICR_IGROUPR0 + i / 8);
- gic_cpu_config(rbase, gic_data.ppi_nr + SGI_NR, gic_redist_wait_for_rwp);
+ gic_cpu_config(rbase, gic_data.ppi_nr + SGI_NR);
+ gic_redist_wait_for_rwp();
/* initialise system registers */
gic_cpu_sys_reg_init();
diff --git a/drivers/irqchip/irq-gic.c b/drivers/irqchip/irq-gic.c
index 98aa383e39db1..87255bde960fc 100644
--- a/drivers/irqchip/irq-gic.c
+++ b/drivers/irqchip/irq-gic.c
@@ -303,7 +303,7 @@ static int gic_set_type(struct irq_data *d, unsigned int type)
type != IRQ_TYPE_EDGE_RISING)
return -EINVAL;
- ret = gic_configure_irq(gicirq, type, base + GIC_DIST_CONFIG, NULL);
+ ret = gic_configure_irq(gicirq, type, base + GIC_DIST_CONFIG);
if (ret && gicirq < 32) {
/* Misconfigured PPIs are usually not fatal */
pr_warn("GIC: PPI%ld is secure or misconfigured\n", gicirq - 16);
@@ -479,7 +479,7 @@ static void gic_dist_init(struct gic_chip_data *gic)
for (i = 32; i < gic_irqs; i += 4)
writel_relaxed(cpumask, base + GIC_DIST_TARGET + i * 4 / 4);
- gic_dist_config(base, gic_irqs, NULL);
+ gic_dist_config(base, gic_irqs);
writel_relaxed(GICD_ENABLE, base + GIC_DIST_CTRL);
}
@@ -516,7 +516,7 @@ static int gic_cpu_init(struct gic_chip_data *gic)
gic_cpu_map[i] &= ~cpu_mask;
}
- gic_cpu_config(dist_base, 32, NULL);
+ gic_cpu_config(dist_base, 32);
writel_relaxed(GICC_INT_PRI_THRESHOLD, base + GIC_CPU_PRIMASK);
gic_cpu_if_up(gic);
diff --git a/drivers/irqchip/irq-hip04.c b/drivers/irqchip/irq-hip04.c
index 46161f6ff289d..5285150fd9096 100644
--- a/drivers/irqchip/irq-hip04.c
+++ b/drivers/irqchip/irq-hip04.c
@@ -130,7 +130,7 @@ static int hip04_irq_set_type(struct irq_data *d, unsigned int type)
raw_spin_lock(&irq_controller_lock);
- ret = gic_configure_irq(irq, type, base + GIC_DIST_CONFIG, NULL);
+ ret = gic_configure_irq(irq, type, base + GIC_DIST_CONFIG);
if (ret && irq < 32) {
/* Misconfigured PPIs are usually not fatal */
pr_warn("GIC: PPI%d is secure or misconfigured\n", irq - 16);
@@ -260,7 +260,7 @@ static void __init hip04_irq_dist_init(struct hip04_irq_data *intc)
for (i = 32; i < nr_irqs; i += 2)
writel_relaxed(cpumask, base + GIC_DIST_TARGET + ((i * 2) & ~3));
- gic_dist_config(base, nr_irqs, NULL);
+ gic_dist_config(base, nr_irqs);
writel_relaxed(1, base + GIC_DIST_CTRL);
}
@@ -287,7 +287,7 @@ static void hip04_irq_cpu_init(struct hip04_irq_data *intc)
if (i != cpu)
hip04_cpu_map[i] &= ~cpu_mask;
- gic_cpu_config(dist_base, 32, NULL);
+ gic_cpu_config(dist_base, 32);
writel_relaxed(0xf0, base + GIC_CPU_PRIMASK);
writel_relaxed(1, base + GIC_CPU_CTRL);
--
2.30.2
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