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bus/fslmc: add interrupt enabling routine

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Signed-off-by: Nipun Gupta <nipun.gupta@nxp.com>
This commit is contained in:
Nipun Gupta 2017-06-30 14:24:32 +05:30 committed by Jerin Jacob
parent b75061260c
commit 9acdd08541
2 changed files with 37 additions and 0 deletions
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34
drivers/bus/fslmc/fslmc_vfio.c
View File

@ -368,6 +368,40 @@ fslmc_bus_add_device(struct rte_dpaa2_device *dev)
}
}
#define IRQ_SET_BUF_LEN (sizeof(struct vfio_irq_set) + sizeof(int))
int rte_dpaa2_intr_enable(struct rte_intr_handle *intr_handle,
uint32_t index)
{
struct vfio_irq_set *irq_set;
char irq_set_buf[IRQ_SET_BUF_LEN];
int *fd_ptr, fd, ret;
/* Prepare vfio_irq_set structure and SET the IRQ in VFIO */
/* Give the eventfd to VFIO */
fd = eventfd(0, 0);
irq_set = (struct vfio_irq_set *)irq_set_buf;
irq_set->argsz = sizeof(irq_set_buf);
irq_set->count = 1;
irq_set->flags = VFIO_IRQ_SET_DATA_EVENTFD |
VFIO_IRQ_SET_ACTION_TRIGGER;
irq_set->index = index;
irq_set->start = 0;
fd_ptr = (int *)&irq_set->data;
*fd_ptr = fd;
ret = ioctl(intr_handle->vfio_dev_fd, VFIO_DEVICE_SET_IRQS, irq_set);
if (ret < 0) {
FSLMC_VFIO_LOG(ERR, "Unable to set IRQ in VFIO, ret: %d\n",
ret);
return -1;
}
/* Set the FD and update the flags */
intr_handle->fd = fd;
return 0;
}
/* Following function shall fetch total available list of MC devices
* from VFIO container & populate private list of devices and other
* data structures

3
drivers/bus/fslmc/fslmc_vfio.h
View File

@ -90,6 +90,9 @@ int vfio_dmamap_mem_region(
uint64_t iova,
uint64_t size);
int rte_dpaa2_intr_enable(struct rte_intr_handle *intr_handle,
uint32_t index);
int fslmc_vfio_setup_group(void);
int fslmc_vfio_process_group(void);
int rte_fslmc_vfio_dmamap(void);