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lib: sbi_irqchip: Allow irqchip drivers advertise capabilities

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Extend struct sbi_irqchip_device to allow irqchip drivers advertise
interrupt controller capabilities (such as wired interrupt, MSIs, etc).
This further allows other parts of OpenSBI to lookup irqchip devices
based on capabilities.

Signed-off-by: Anup Patel <anup.patel@oss.qualcomm.com>
Link: https://lore.kernel.org/r/20260608125257.3220114-2-anup.patel@oss.qualcomm.com
Signed-off-by: Anup Patel <anup@brainfault.org>
This commit is contained in:
Anup Patel
2026-06-08 18:22:53 +05:30
committed by Anup Patel
parent a59c8fb9fb
commit 8570b93844
4 changed files with 32 additions and 1 deletions
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include/sbi/sbi_irqchip.h
+10 -1
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@@ -31,12 +31,17 @@ struct sbi_irqchip_device {
/** Internal data of all hardware interrupts of this irqchip (private) */
struct sbi_irqchip_hwirq_data *hwirqs;
/** List of interrupt handlers */
/** List of interrupt handlers (private) */
struct sbi_dlist handler_list;
/** Unique ID of this irqchip */
u32 id;
/** Capabilities of this irqchip */
#define SBI_IRQCHIP_CAPS_WIRED BIT(0)
#define SBI_IRQCHIP_CAPS_MSI BIT(1)
unsigned long caps;
/** Number of hardware IRQs of this irqchip */
u32 num_hwirq;
@@ -141,6 +146,10 @@ int sbi_irqchip_register_reserved(struct sbi_irqchip_device *chip,
int sbi_irqchip_unregister_handler(struct sbi_irqchip_device *chip,
u32 first_hwirq, u32 num_hwirq);
/** Find an irqchip device based on matching capabilities */
struct sbi_irqchip_device *sbi_irqchip_find_device_by_caps(unsigned long caps,
struct sbi_irqchip_device *first);
/** Find an irqchip device based on unique ID */
struct sbi_irqchip_device *sbi_irqchip_find_device(u32 id);