opensbi.git/lib/utils/irqchip, branch v1.9

lib: sbi_irqchip: Allow irqchip drivers advertise capabilities

2026-06-10T12:43:10Z

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 Link: https://lore.kernel.org/r/20260608125257.3220114-2-anup.patel@oss.qualcomm.com Signed-off-by: Anup Patel

lib: sbi_irqchip: Allow marking hardware interrupts as reserved

2026-05-12T04:25:58Z

Some of the hardware interrupts may be special so allow irqchip drivers to make these hardware interrupts as reserved. Introduce sbi_irqchip_register_reserved() for this purpose. Signed-off-by: Anup Patel Link: https://lore.kernel.org/r/20260423052339.356900-5-anup.patel@oss.qualcomm.com Signed-off-by: Anup Patel

lib: sbi_irqchip: Allow interrupt client to specify line sensing

2026-05-12T04:25:58Z

The interrupt client should be allowed to specify the line sensing type of the hwirqs for which it is registering handler. To support this, add hwirq_flags parameter to hwirq_setup() callback provided by the irqchip driver. Signed-off-by: Anup Patel Link: https://lore.kernel.org/r/20260423052339.356900-4-anup.patel@oss.qualcomm.com Signed-off-by: Anup Patel

lib: sbi_irqchip: Allow registering interrupt handlers

2026-03-22T05:25:58Z

To handle external interrupts in M-mode, the sbi_irqchip framework must allow registering interrupt handlers from device drivers. Signed-off-by: Anup Patel Link: https://lore.kernel.org/r/20260213055342.3124872-9-anup.patel@oss.qualcomm.com Signed-off-by: Anup Patel

lib: sbi_irqchip: Associate 32-bit unique ID for each irqchip device

2026-03-22T05:25:08Z

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 Link: https://lore.kernel.org/r/20260213055342.3124872-8-anup.patel@oss.qualcomm.com Signed-off-by: Anup Patel

lib: sbi_irqchip: Support irqchip device targetting subset of harts

2026-03-22T05:23:33Z

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 Link: https://lore.kernel.org/r/20260213055342.3124872-6-anup.patel@oss.qualcomm.com Signed-off-by: Anup Patel

lib: utils/irqchip: Add IDC to hartindex map in struct aplic_data

2026-03-22T05:22:45Z

A platform can have multiple APLICs in direct-mode targetting different subset of harts. Add APLIC ID to hartindex map in struct aplic_data to capture the set of harts targeted by a given APLIC in direct-mode. Signed-off-by: Anup Patel Link: https://lore.kernel.org/r/20260213055342.3124872-5-anup.patel@oss.qualcomm.com Signed-off-by: Anup Patel

lib: utils/irqchip: Fix context_map init in irqchip_plic_update_context_map()

2026-03-22T05:22:43Z

The context_map[][] elements should be initialized with negative value so that context_map does not point to anything for non-existent PLIC contexts. Fixes: 69448a079065 ("lib: utils/irqchip: plic: Provide a hartindex to context map") Signed-off-by: Anup Patel Link: https://lore.kernel.org/r/20260213055342.3124872-4-anup.patel@oss.qualcomm.com Signed-off-by: Anup Patel

lib: sbi_irqchip: Rename irq_handle() callback to process_hwirqs()

2026-03-22T05:22:41Z

The irq_handle() callback of irqchip device is meant to process hardware interrupt of the irqchip hence rename it accordingly. Signed-off-by: Anup Patel Link: https://lore.kernel.org/r/20260213055342.3124872-3-anup.patel@oss.qualcomm.com Signed-off-by: Anup Patel

lib: utils/irqchip: plic: context_id is signed

2025-11-10T08:14:17Z

Array context_id in struct plic_data has elements of type s16. A negative valid indicates an invalid entry. Copying the array element to a u32 scalar hides the sign. Use s16 as target type when copying an array element to a scalar. Addresses-Coverity-ID: 1667176 Unsigned compared against 0 Addresses-Coverity-ID: 1667178 Logically dead code Addresses-Coverity-ID: 1667179 Unsigned compared against 0 Addresses-Coverity-ID: 1667182 Logically dead code Signed-off-by: Heinrich Schuchardt Reviewed-by: Anup Patel Link: https://lore.kernel.org/r/20251105110121.47130-1-heinrich.schuchardt@canonical.com Signed-off-by: Anup Patel