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| author | Anup Patel <anup.patel@oss.qualcomm.com> | 2026-02-13 11:23:41 +0530 |
|---|---|---|
| committer | Anup Patel <anup@brainfault.org> | 2026-03-22 10:55:08 +0530 |
| commit | e8ebd1fbc615774f0452e74c850a3dbe00b5c80d (patch) | |
| tree | effa65550444586c0efa9ece94b3bb069b567e91 /lib | |
| parent | e82d20122dcf97a357053636c1fc6d268bd4db5c (diff) | |
| download | opensbi-e8ebd1fbc615774f0452e74c850a3dbe00b5c80d.tar.gz opensbi-e8ebd1fbc615774f0452e74c850a3dbe00b5c80d.tar.bz2 opensbi-e8ebd1fbc615774f0452e74c850a3dbe00b5c80d.zip | |
lib: sbi_irqchip: Associate 32-bit unique ID for each irqchip device
Allow locating irqchip device instance using a unique 32-bit ID. This
32-bit unique ID can be set by the irqchip driver at the time of adding
irqchip device.
Signed-off-by: Anup Patel <anup.patel@oss.qualcomm.com>
Link: https://lore.kernel.org/r/20260213055342.3124872-8-anup.patel@oss.qualcomm.com
Signed-off-by: Anup Patel <anup@brainfault.org>
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/sbi/sbi_irqchip.c | 15 | ||||
| -rw-r--r-- | lib/utils/irqchip/aplic.c | 1 | ||||
| -rw-r--r-- | lib/utils/irqchip/imsic.c | 1 | ||||
| -rw-r--r-- | lib/utils/irqchip/plic.c | 1 |
4 files changed, 18 insertions, 0 deletions
diff --git a/lib/sbi/sbi_irqchip.c b/lib/sbi/sbi_irqchip.c index d3e58288..5df6189b 100644 --- a/lib/sbi/sbi_irqchip.c +++ b/lib/sbi/sbi_irqchip.c @@ -30,6 +30,18 @@ int sbi_irqchip_process(void) return hd->chip->process_hwirqs(hd->chip); } +struct sbi_irqchip_device *sbi_irqchip_find_device(u32 id) +{ + struct sbi_irqchip_device *chip; + + sbi_list_for_each_entry(chip, &irqchip_list, node) { + if (chip->id == id) + return chip; + } + + return NULL; +} + int sbi_irqchip_add_device(struct sbi_irqchip_device *chip) { struct sbi_irqchip_hart_data *hd; @@ -39,6 +51,9 @@ int sbi_irqchip_add_device(struct sbi_irqchip_device *chip) if (!chip || !sbi_hartmask_weight(&chip->target_harts)) return SBI_EINVAL; + if (sbi_irqchip_find_device(chip->id)) + return SBI_EALREADY; + if (chip->process_hwirqs) { sbi_hartmask_for_each_hartindex(h, &chip->target_harts) { scratch = sbi_hartindex_to_scratch(h); diff --git a/lib/utils/irqchip/aplic.c b/lib/utils/irqchip/aplic.c index ea5cb7c4..d47a810b 100644 --- a/lib/utils/irqchip/aplic.c +++ b/lib/utils/irqchip/aplic.c @@ -306,6 +306,7 @@ int aplic_cold_irqchip_init(struct aplic_data *aplic) } /* Register irqchip device */ + aplic->irqchip.id = aplic->unique_id; rc = sbi_irqchip_add_device(&aplic->irqchip); if (rc) return rc; diff --git a/lib/utils/irqchip/imsic.c b/lib/utils/irqchip/imsic.c index 5ec9dff4..0f296c89 100644 --- a/lib/utils/irqchip/imsic.c +++ b/lib/utils/irqchip/imsic.c @@ -391,6 +391,7 @@ int imsic_cold_irqchip_init(struct imsic_data *imsic) } /* Register irqchip device */ + imsic_device.id = imsic->unique_id; sbi_hartmask_set_all(&imsic_device.target_harts); rc = sbi_irqchip_add_device(&imsic_device); if (rc) diff --git a/lib/utils/irqchip/plic.c b/lib/utils/irqchip/plic.c index 25cc2787..973f7c2a 100644 --- a/lib/utils/irqchip/plic.c +++ b/lib/utils/irqchip/plic.c @@ -280,6 +280,7 @@ int plic_cold_irqchip_init(struct plic_data *plic) } /* Register irqchip device */ + plic->irqchip.id = plic->unique_id; plic->irqchip.warm_init = plic_warm_irqchip_init; return sbi_irqchip_add_device(&plic->irqchip); } |