diff options
Diffstat (limited to 'drivers/misc/ocxl/file.c')
| -rw-r--r-- | drivers/misc/ocxl/file.c | 22 |
1 files changed, 21 insertions, 1 deletions
diff --git a/drivers/misc/ocxl/file.c b/drivers/misc/ocxl/file.c index 7f5282a3af3a..8aa22893ed76 100644 --- a/drivers/misc/ocxl/file.c +++ b/drivers/misc/ocxl/file.c @@ -3,6 +3,7 @@ #include <linux/fs.h> #include <linux/poll.h> #include <linux/sched/signal.h> +#include <linux/eventfd.h> #include <linux/uaccess.h> #include <uapi/misc/ocxl.h> #include <asm/reg.h> @@ -183,11 +184,27 @@ static long afu_ioctl_get_features(struct ocxl_context *ctx, x == OCXL_IOCTL_GET_FEATURES ? "GET_FEATURES" : \ "UNKNOWN") +static irqreturn_t irq_handler(void *private) +{ + struct eventfd_ctx *ev_ctx = private; + + eventfd_signal(ev_ctx, 1); + return IRQ_HANDLED; +} + +static void irq_free(void *private) +{ + struct eventfd_ctx *ev_ctx = private; + + eventfd_ctx_put(ev_ctx); +} + static long afu_ioctl(struct file *file, unsigned int cmd, unsigned long args) { struct ocxl_context *ctx = file->private_data; struct ocxl_ioctl_irq_fd irq_fd; + struct eventfd_ctx *ev_ctx; int irq_id; u64 irq_offset; long rc; @@ -239,7 +256,10 @@ static long afu_ioctl(struct file *file, unsigned int cmd, if (irq_fd.reserved) return -EINVAL; irq_id = ocxl_irq_offset_to_id(ctx, irq_fd.irq_offset); - rc = ocxl_afu_irq_set_fd(ctx, irq_id, irq_fd.eventfd); + ev_ctx = eventfd_ctx_fdget(irq_fd.eventfd); + if (!ev_ctx) + return -EFAULT; + rc = ocxl_irq_set_handler(ctx, irq_id, irq_handler, irq_free, ev_ctx); break; case OCXL_IOCTL_GET_METADATA: |