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authorLinus Torvalds <torvalds@linux-foundation.org>2024-02-18 18:14:12 +0100
committerLinus Torvalds <torvalds@linux-foundation.org>2024-02-18 18:14:12 +0100
commit7cb7c32d60ad2dea48b7ac2845d86f10b0be089e (patch)
treebd353181af7d1d7556571a7622ad9b0fd241d0f7
parentMerge tag 'i2c-for-6.8-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/... (diff)
parentirqchip/gic-v3-its: Fix GICv4.1 VPE affinity update (diff)
downloadlinux-7cb7c32d60ad2dea48b7ac2845d86f10b0be089e.tar.xz
linux-7cb7c32d60ad2dea48b7ac2845d86f10b0be089e.zip
Merge tag 'irq_urgent_for_v6.8_rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull irq fixes from Borislav Petkov: - Fix GICv4.1 affinity update - Restore a quirk for ACPI-based GICv4 systems - Handle non-coherent GICv4 redistributors properly - Prevent spurious interrupts on Broadcom devices using GIC v3 architecture - Other minor fixes * tag 'irq_urgent_for_v6.8_rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: irqchip/gic-v3-its: Fix GICv4.1 VPE affinity update irqchip/gic-v3-its: Restore quirk probing for ACPI-based systems irqchip/gic-v3-its: Handle non-coherent GICv4 redistributors irqchip/qcom-mpm: Fix IS_ERR() vs NULL check in qcom_mpm_init() irqchip/loongson-eiointc: Use correct struct type in eiointc_domain_alloc() irqchip/irq-brcmstb-l2: Add write memory barrier before exit
-rw-r--r--drivers/irqchip/irq-brcmstb-l2.c5
-rw-r--r--drivers/irqchip/irq-gic-v3-its.c62
-rw-r--r--drivers/irqchip/irq-loongson-eiointc.c2
-rw-r--r--drivers/irqchip/irq-qcom-mpm.c4
4 files changed, 47 insertions, 26 deletions
diff --git a/drivers/irqchip/irq-brcmstb-l2.c b/drivers/irqchip/irq-brcmstb-l2.c
index 5559c943f03f..2b0b3175cea0 100644
--- a/drivers/irqchip/irq-brcmstb-l2.c
+++ b/drivers/irqchip/irq-brcmstb-l2.c
@@ -2,7 +2,7 @@
/*
* Generic Broadcom Set Top Box Level 2 Interrupt controller driver
*
- * Copyright (C) 2014-2017 Broadcom
+ * Copyright (C) 2014-2024 Broadcom
*/
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
@@ -112,6 +112,9 @@ static void brcmstb_l2_intc_irq_handle(struct irq_desc *desc)
generic_handle_domain_irq(b->domain, irq);
} while (status);
out:
+ /* Don't ack parent before all device writes are done */
+ wmb();
+
chained_irq_exit(chip, desc);
}
diff --git a/drivers/irqchip/irq-gic-v3-its.c b/drivers/irqchip/irq-gic-v3-its.c
index d097001c1e3e..53abd4779914 100644
--- a/drivers/irqchip/irq-gic-v3-its.c
+++ b/drivers/irqchip/irq-gic-v3-its.c
@@ -207,6 +207,11 @@ static bool require_its_list_vmovp(struct its_vm *vm, struct its_node *its)
return (gic_rdists->has_rvpeid || vm->vlpi_count[its->list_nr]);
}
+static bool rdists_support_shareable(void)
+{
+ return !(gic_rdists->flags & RDIST_FLAGS_FORCE_NON_SHAREABLE);
+}
+
static u16 get_its_list(struct its_vm *vm)
{
struct its_node *its;
@@ -2710,10 +2715,12 @@ static u64 inherit_vpe_l1_table_from_its(void)
break;
}
val |= FIELD_PREP(GICR_VPROPBASER_4_1_ADDR, addr >> 12);
- val |= FIELD_PREP(GICR_VPROPBASER_SHAREABILITY_MASK,
- FIELD_GET(GITS_BASER_SHAREABILITY_MASK, baser));
- val |= FIELD_PREP(GICR_VPROPBASER_INNER_CACHEABILITY_MASK,
- FIELD_GET(GITS_BASER_INNER_CACHEABILITY_MASK, baser));
+ if (rdists_support_shareable()) {
+ val |= FIELD_PREP(GICR_VPROPBASER_SHAREABILITY_MASK,
+ FIELD_GET(GITS_BASER_SHAREABILITY_MASK, baser));
+ val |= FIELD_PREP(GICR_VPROPBASER_INNER_CACHEABILITY_MASK,
+ FIELD_GET(GITS_BASER_INNER_CACHEABILITY_MASK, baser));
+ }
val |= FIELD_PREP(GICR_VPROPBASER_4_1_SIZE, GITS_BASER_NR_PAGES(baser) - 1);
return val;
@@ -2936,8 +2943,10 @@ static int allocate_vpe_l1_table(void)
WARN_ON(!IS_ALIGNED(pa, psz));
val |= FIELD_PREP(GICR_VPROPBASER_4_1_ADDR, pa >> 12);
- val |= GICR_VPROPBASER_RaWb;
- val |= GICR_VPROPBASER_InnerShareable;
+ if (rdists_support_shareable()) {
+ val |= GICR_VPROPBASER_RaWb;
+ val |= GICR_VPROPBASER_InnerShareable;
+ }
val |= GICR_VPROPBASER_4_1_Z;
val |= GICR_VPROPBASER_4_1_VALID;
@@ -3126,7 +3135,7 @@ static void its_cpu_init_lpis(void)
gicr_write_propbaser(val, rbase + GICR_PROPBASER);
tmp = gicr_read_propbaser(rbase + GICR_PROPBASER);
- if (gic_rdists->flags & RDIST_FLAGS_FORCE_NON_SHAREABLE)
+ if (!rdists_support_shareable())
tmp &= ~GICR_PROPBASER_SHAREABILITY_MASK;
if ((tmp ^ val) & GICR_PROPBASER_SHAREABILITY_MASK) {
@@ -3153,7 +3162,7 @@ static void its_cpu_init_lpis(void)
gicr_write_pendbaser(val, rbase + GICR_PENDBASER);
tmp = gicr_read_pendbaser(rbase + GICR_PENDBASER);
- if (gic_rdists->flags & RDIST_FLAGS_FORCE_NON_SHAREABLE)
+ if (!rdists_support_shareable())
tmp &= ~GICR_PENDBASER_SHAREABILITY_MASK;
if (!(tmp & GICR_PENDBASER_SHAREABILITY_MASK)) {
@@ -3817,8 +3826,9 @@ static int its_vpe_set_affinity(struct irq_data *d,
bool force)
{
struct its_vpe *vpe = irq_data_get_irq_chip_data(d);
- int from, cpu = cpumask_first(mask_val);
+ struct cpumask common, *table_mask;
unsigned long flags;
+ int from, cpu;
/*
* Changing affinity is mega expensive, so let's be as lazy as
@@ -3834,19 +3844,22 @@ static int its_vpe_set_affinity(struct irq_data *d,
* taken on any vLPI handling path that evaluates vpe->col_idx.
*/
from = vpe_to_cpuid_lock(vpe, &flags);
- if (from == cpu)
- goto out;
-
- vpe->col_idx = cpu;
+ table_mask = gic_data_rdist_cpu(from)->vpe_table_mask;
/*
- * GICv4.1 allows us to skip VMOVP if moving to a cpu whose RD
- * is sharing its VPE table with the current one.
+ * If we are offered another CPU in the same GICv4.1 ITS
+ * affinity, pick this one. Otherwise, any CPU will do.
*/
- if (gic_data_rdist_cpu(cpu)->vpe_table_mask &&
- cpumask_test_cpu(from, gic_data_rdist_cpu(cpu)->vpe_table_mask))
+ if (table_mask && cpumask_and(&common, mask_val, table_mask))
+ cpu = cpumask_test_cpu(from, &common) ? from : cpumask_first(&common);
+ else
+ cpu = cpumask_first(mask_val);
+
+ if (from == cpu)
goto out;
+ vpe->col_idx = cpu;
+
its_send_vmovp(vpe);
its_vpe_db_proxy_move(vpe, from, cpu);
@@ -3880,14 +3893,18 @@ static void its_vpe_schedule(struct its_vpe *vpe)
val = virt_to_phys(page_address(vpe->its_vm->vprop_page)) &
GENMASK_ULL(51, 12);
val |= (LPI_NRBITS - 1) & GICR_VPROPBASER_IDBITS_MASK;
- val |= GICR_VPROPBASER_RaWb;
- val |= GICR_VPROPBASER_InnerShareable;
+ if (rdists_support_shareable()) {
+ val |= GICR_VPROPBASER_RaWb;
+ val |= GICR_VPROPBASER_InnerShareable;
+ }
gicr_write_vpropbaser(val, vlpi_base + GICR_VPROPBASER);
val = virt_to_phys(page_address(vpe->vpt_page)) &
GENMASK_ULL(51, 16);
- val |= GICR_VPENDBASER_RaWaWb;
- val |= GICR_VPENDBASER_InnerShareable;
+ if (rdists_support_shareable()) {
+ val |= GICR_VPENDBASER_RaWaWb;
+ val |= GICR_VPENDBASER_InnerShareable;
+ }
/*
* There is no good way of finding out if the pending table is
* empty as we can race against the doorbell interrupt very
@@ -5078,6 +5095,8 @@ static int __init its_probe_one(struct its_node *its)
u32 ctlr;
int err;
+ its_enable_quirks(its);
+
if (is_v4(its)) {
if (!(its->typer & GITS_TYPER_VMOVP)) {
err = its_compute_its_list_map(its);
@@ -5429,7 +5448,6 @@ static int __init its_of_probe(struct device_node *node)
if (!its)
return -ENOMEM;
- its_enable_quirks(its);
err = its_probe_one(its);
if (err) {
its_node_destroy(its);
diff --git a/drivers/irqchip/irq-loongson-eiointc.c b/drivers/irqchip/irq-loongson-eiointc.c
index 1623cd779175..b3736bdd4b9f 100644
--- a/drivers/irqchip/irq-loongson-eiointc.c
+++ b/drivers/irqchip/irq-loongson-eiointc.c
@@ -241,7 +241,7 @@ static int eiointc_domain_alloc(struct irq_domain *domain, unsigned int virq,
int ret;
unsigned int i, type;
unsigned long hwirq = 0;
- struct eiointc *priv = domain->host_data;
+ struct eiointc_priv *priv = domain->host_data;
ret = irq_domain_translate_onecell(domain, arg, &hwirq, &type);
if (ret)
diff --git a/drivers/irqchip/irq-qcom-mpm.c b/drivers/irqchip/irq-qcom-mpm.c
index cda5838d2232..7942d8eb3d00 100644
--- a/drivers/irqchip/irq-qcom-mpm.c
+++ b/drivers/irqchip/irq-qcom-mpm.c
@@ -389,8 +389,8 @@ static int qcom_mpm_init(struct device_node *np, struct device_node *parent)
/* Don't use devm_ioremap_resource, as we're accessing a shared region. */
priv->base = devm_ioremap(dev, res.start, resource_size(&res));
of_node_put(msgram_np);
- if (IS_ERR(priv->base))
- return PTR_ERR(priv->base);
+ if (!priv->base)
+ return -ENOMEM;
} else {
/* Otherwise, fall back to simple MMIO. */
priv->base = devm_platform_ioremap_resource(pdev, 0);