linux-kernel - [PATCH v2 1/4] LongArch: KVM: Add some maccros for AVEC

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Message-Id: <20251128091125.2720148-2-gaosong@loongson.cn>
Date: Fri, 28 Nov 2025 17:11:22 +0800
From: Song Gao <gaosong@...ngson.cn>
To: maobibo@...ngson.cn,
	chenhuacai@...nel.org
Cc: kvm@...r.kernel.org,
	loongarch@...ts.linux.dev,
	kernel@...0n.name,
	linux-kernel@...r.kernel.org
Subject: [PATCH v2 1/4] LongArch: KVM: Add some maccros for AVEC

Add some maccros for AVEC interrupt controller, so the dintc can use
those maccros.

Signed-off-by: Song Gao <gaosong@...ngson.cn>
---
 arch/loongarch/include/asm/irq.h     | 8 ++++++++
 drivers/irqchip/irq-loongarch-avec.c | 5 +++--
 2 files changed, 11 insertions(+), 2 deletions(-)

diff --git a/arch/loongarch/include/asm/irq.h b/arch/loongarch/include/asm/irq.h
index 12bd15578c33..aaa022fcb9e3 100644
--- a/arch/loongarch/include/asm/irq.h
+++ b/arch/loongarch/include/asm/irq.h
@@ -50,6 +50,14 @@ void spurious_interrupt(void);
 #define NR_LEGACY_VECTORS	16
 #define IRQ_MATRIX_BITS		NR_VECTORS
 
+#define AVEC_VIRQ_SHIFT		4
+#define AVEC_VIRQ_BIT		8
+#define AVEC_VIRQ_MASK		GENMASK(AVEC_VIRQ_BIT - 1, 0)
+#define AVEC_CPU_SHIFT		12
+#define AVEC_CPU_BIT		16
+#define AVEC_CPU_MASK		GENMASK(AVEC_CPU_BIT - 1, 0)
+
+
 #define arch_trigger_cpumask_backtrace arch_trigger_cpumask_backtrace
 void arch_trigger_cpumask_backtrace(const struct cpumask *mask, int exclude_cpu);
 
diff --git a/drivers/irqchip/irq-loongarch-avec.c b/drivers/irqchip/irq-loongarch-avec.c
index bf52dc8345f5..f0118cfd4363 100644
--- a/drivers/irqchip/irq-loongarch-avec.c
+++ b/drivers/irqchip/irq-loongarch-avec.c
@@ -209,8 +209,9 @@ static void avecintc_compose_msi_msg(struct irq_data *d, struct msi_msg *msg)
 	struct avecintc_data *adata = irq_data_get_irq_chip_data(d);
 
 	msg->address_hi = 0x0;
-	msg->address_lo = (loongarch_avec.msi_base_addr | (adata->vec & 0xff) << 4)
-			  | ((cpu_logical_map(adata->cpu & 0xffff)) << 12);
+	msg->address_lo = (loongarch_avec.msi_base_addr |
+			(adata->vec & AVEC_VIRQ_MASK) << AVEC_VIRQ_SHIFT) |
+			((cpu_logical_map(adata->cpu & AVEC_CPU_MASK)) << AVEC_CPU_SHIFT);
 	msg->data = 0x0;
 }
 
-- 
2.39.3