diff options
Diffstat (limited to 'include/misc/ocxl.h')
| -rw-r--r-- | include/misc/ocxl.h | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/include/misc/ocxl.h b/include/misc/ocxl.h index e4704632eac5..dea93885a839 100644 --- a/include/misc/ocxl.h +++ b/include/misc/ocxl.h @@ -155,6 +155,52 @@ int ocxl_context_attach(struct ocxl_context *ctx, u64 amr, */ int ocxl_context_detach(struct ocxl_context *ctx); +// AFU IRQs + +/** + * Allocate an IRQ associated with an AFU context + * @ctx: the AFU context + * @irq_id: out, the IRQ ID + * + * Returns 0 on success, negative on failure + */ +extern int ocxl_afu_irq_alloc(struct ocxl_context *ctx, int *irq_id); + +/** + * Frees an IRQ associated with an AFU context + * @ctx: the AFU context + * @irq_id: the IRQ ID + * + * Returns 0 on success, negative on failure + */ +extern int ocxl_afu_irq_free(struct ocxl_context *ctx, int irq_id); + +/** + * Gets the address of the trigger page for an IRQ + * This can then be provided to an AFU which will write to that + * page to trigger the IRQ. + * @ctx: The AFU context that the IRQ is associated with + * @irq_id: The IRQ ID + * + * returns the trigger page address, or 0 if the IRQ is not valid + */ +extern u64 ocxl_afu_irq_get_addr(struct ocxl_context *ctx, int irq_id); + +/** + * Provide a callback to be called when an IRQ is triggered + * @ctx: The AFU context that the IRQ is associated with + * @irq_id: The IRQ ID + * @handler: the callback to be called when the IRQ is triggered + * @free_private: the callback to be called when the IRQ is freed (may be NULL) + * @private: Private data to be passed to the callbacks + * + * Returns 0 on success, negative on failure + */ +int ocxl_irq_set_handler(struct ocxl_context *ctx, int irq_id, + irqreturn_t (*handler)(void *private), + void (*free_private)(void *private), + void *private); + // AFU Metadata /** |