| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-ID: <174401178220.31282.2947787410456906417.tip-bot2@tip-bot2>
Date: Mon, 07 Apr 2025 07:43:02 -0000
From: "tip-bot2 for Yixun Lan" <tip-bot2@...utronix.de>
To: linux-tip-commits@...r.kernel.org
Cc: Yixun Lan <dlan@...too.org>, Thomas Gleixner <tglx@...utronix.de>,
x86@...nel.org, linux-kernel@...r.kernel.org, maz@...nel.org
Subject: [tip: irq/core] irqdomain: Support three-cell scheme interrupts
The following commit has been merged into the irq/core branch of tip:
Commit-ID: 0a02e1f4a54ace747304687ced3b76d159e58914
Gitweb: https://git.kernel.org/tip/0a02e1f4a54ace747304687ced3b76d159e58914
Author: Yixun Lan <dlan@...too.org>
AuthorDate: Wed, 26 Mar 2025 06:06:19 +08:00
Committer: Thomas Gleixner <tglx@...utronix.de>
CommitterDate: Mon, 07 Apr 2025 09:36:09 +02:00
irqdomain: Support three-cell scheme interrupts
Add new function *_twothreecell() to extend support to parse three-cell
interrupts which encoded as <instance hwirq irqflag>, the translate
function will retrieve irq number and flag from last two cells.
This API will be used in gpio irq driver which need to work with
two or three cells cases.
Signed-off-by: Yixun Lan <dlan@...too.org>
Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
Link: https://lore.kernel.org/all/20250326-04-gpio-irq-threecell-v3-1-aab006ab0e00@gentoo.org
---
include/linux/irqdomain.h | 20 +++++++-------
kernel/irq/irqdomain.c | 56 ++++++++++++++++++++++++++++++++++++++-
2 files changed, 66 insertions(+), 10 deletions(-)
diff --git a/include/linux/irqdomain.h b/include/linux/irqdomain.h
index bb71111..df7e927 100644
--- a/include/linux/irqdomain.h
+++ b/include/linux/irqdomain.h
@@ -571,16 +571,16 @@ int irq_domain_xlate_twocell(struct irq_domain *d, struct device_node *ctrlr,
int irq_domain_xlate_onetwocell(struct irq_domain *d, struct device_node *ctrlr,
const u32 *intspec, unsigned int intsize,
irq_hw_number_t *out_hwirq, unsigned int *out_type);
-
-int irq_domain_translate_twocell(struct irq_domain *d,
- struct irq_fwspec *fwspec,
- unsigned long *out_hwirq,
- unsigned int *out_type);
-
-int irq_domain_translate_onecell(struct irq_domain *d,
- struct irq_fwspec *fwspec,
- unsigned long *out_hwirq,
- unsigned int *out_type);
+int irq_domain_xlate_twothreecell(struct irq_domain *d, struct device_node *ctrlr,
+ const u32 *intspec, unsigned int intsize,
+ irq_hw_number_t *out_hwirq, unsigned int *out_type);
+
+int irq_domain_translate_onecell(struct irq_domain *d, struct irq_fwspec *fwspec,
+ unsigned long *out_hwirq, unsigned int *out_type);
+int irq_domain_translate_twocell(struct irq_domain *d, struct irq_fwspec *fwspec,
+ unsigned long *out_hwirq, unsigned int *out_type);
+int irq_domain_translate_twothreecell(struct irq_domain *d, struct irq_fwspec *fwspec,
+ unsigned long *out_hwirq, unsigned int *out_type);
/* IPI functions */
int irq_reserve_ipi(struct irq_domain *domain, const struct cpumask *dest);
diff --git a/kernel/irq/irqdomain.c b/kernel/irq/irqdomain.c
index 9d5c865..b294c3f 100644
--- a/kernel/irq/irqdomain.c
+++ b/kernel/irq/irqdomain.c
@@ -1133,6 +1133,31 @@ int irq_domain_xlate_twocell(struct irq_domain *d, struct device_node *ctrlr,
EXPORT_SYMBOL_GPL(irq_domain_xlate_twocell);
/**
+ * irq_domain_xlate_twothreecell() - Generic xlate for direct two or three cell bindings
+ * @d: Interrupt domain involved in the translation
+ * @ctrlr: The device tree node for the device whose interrupt is translated
+ * @intspec: The interrupt specifier data from the device tree
+ * @intsize: The number of entries in @intspec
+ * @out_hwirq: Pointer to storage for the hardware interrupt number
+ * @out_type: Pointer to storage for the interrupt type
+ *
+ * Device Tree interrupt specifier translation function for two or three
+ * cell bindings, where the cell values map directly to the hardware
+ * interrupt number and the type specifier.
+ */
+int irq_domain_xlate_twothreecell(struct irq_domain *d, struct device_node *ctrlr,
+ const u32 *intspec, unsigned int intsize,
+ irq_hw_number_t *out_hwirq, unsigned int *out_type)
+{
+ struct irq_fwspec fwspec;
+
+ of_phandle_args_to_fwspec(ctrlr, intspec, intsize, &fwspec);
+
+ return irq_domain_translate_twothreecell(d, &fwspec, out_hwirq, out_type);
+}
+EXPORT_SYMBOL_GPL(irq_domain_xlate_twothreecell);
+
+/**
* irq_domain_xlate_onetwocell() - Generic xlate for one or two cell bindings
* @d: Interrupt domain involved in the translation
* @ctrlr: The device tree node for the device whose interrupt is translated
@@ -1216,6 +1241,37 @@ int irq_domain_translate_twocell(struct irq_domain *d,
}
EXPORT_SYMBOL_GPL(irq_domain_translate_twocell);
+/**
+ * irq_domain_translate_twothreecell() - Generic translate for direct two or three cell
+ * bindings
+ * @d: Interrupt domain involved in the translation
+ * @fwspec: The firmware interrupt specifier to translate
+ * @out_hwirq: Pointer to storage for the hardware interrupt number
+ * @out_type: Pointer to storage for the interrupt type
+ *
+ * Firmware interrupt specifier translation function for two or three cell
+ * specifications, where the parameter values map directly to the hardware
+ * interrupt number and the type specifier.
+ */
+int irq_domain_translate_twothreecell(struct irq_domain *d, struct irq_fwspec *fwspec,
+ unsigned long *out_hwirq, unsigned int *out_type)
+{
+ if (fwspec->param_count == 2) {
+ *out_hwirq = fwspec->param[0];
+ *out_type = fwspec->param[1] & IRQ_TYPE_SENSE_MASK;
+ return 0;
+ }
+
+ if (fwspec->param_count == 3) {
+ *out_hwirq = fwspec->param[1];
+ *out_type = fwspec->param[2] & IRQ_TYPE_SENSE_MASK;
+ return 0;
+ }
+
+ return -EINVAL;
+}
+EXPORT_SYMBOL_GPL(irq_domain_translate_twothreecell);
+
int irq_domain_alloc_descs(int virq, unsigned int cnt, irq_hw_number_t hwirq,
int node, const struct irq_affinity_desc *affinity)
{
Powered by blists - more mailing lists