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lib: sbi_irqchip: Support irqchip device targetting subset of harts

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It is possible to have platform where an irqchip device targets
a subset of harts and there are multiple irqchip devices to cover
all harts.

To support this scenario:
1) Add target_harts hartmask to struct sbi_irqchip_device which
   represents the set of harts targetted by the irqchip device
2) Call warm_init() and process_hwirqs() callbacks of an irqchip
   device on a hart only if irqchip device targets that particular
   hart

Signed-off-by: Anup Patel <anup.patel@oss.qualcomm.com>
Link: https://lore.kernel.org/r/20260213055342.3124872-6-anup.patel@oss.qualcomm.com
Signed-off-by: Anup Patel <anup@brainfault.org>
This commit is contained in:
Anup Patel
2026-02-13 11:23:39 +05:30
committed by Anup Patel
parent 5a300b32d5
commit b55bb4cdcb
5 changed files with 74 additions and 23 deletions
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8
include/sbi/sbi_irqchip.h
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@@ -10,6 +10,7 @@
#ifndef __SBI_IRQCHIP_H__
#define __SBI_IRQCHIP_H__
#include <sbi/sbi_hartmask.h>
#include <sbi/sbi_list.h>
#include <sbi/sbi_types.h>
@@ -20,11 +21,14 @@ struct sbi_irqchip_device {
/** Node in the list of irqchip devices */
struct sbi_dlist node;
/** Set of harts targetted by this irqchip */
struct sbi_hartmask target_harts;
/** Initialize per-hart state for the current hart */
int (*warm_init)(struct sbi_irqchip_device *chip);
/** Process hardware interrupts from this irqchip */
int (*process_hwirqs)(void);
int (*process_hwirqs)(struct sbi_irqchip_device *chip);
};
/**
@@ -38,7 +42,7 @@ struct sbi_irqchip_device {
int sbi_irqchip_process(void);
/** Register an irqchip device to receive callbacks */
void sbi_irqchip_add_device(struct sbi_irqchip_device *chip);
int sbi_irqchip_add_device(struct sbi_irqchip_device *chip);
/** Initialize interrupt controllers */
int sbi_irqchip_init(struct sbi_scratch *scratch, bool cold_boot);