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From: Nipun Gupta <nipun.gupta@nxp.com>
To: <dev@dpdk.org>
CC: <hemant.agrawal@nxp.com>, <jerin.jacob@caviumnetworks.com>,
<harry.van.haaren@intel.com>, <bruce.richardson@intel.com>,
<gage.eads@intel.com>, <shreyansh.jain@nxp.com>, Nipun Gupta
<nipun.gupta@nxp.com>
Date: Wed, 28 Jun 2017 20:46:01 +0530
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Subject: [dpdk-dev] [PATCH 18/21 v3] fslmc/bus: add interrupt enabling
routine
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Signed-off-by: Nipun Gupta <nipun.gupta@nxp.com>
---
drivers/bus/fslmc/fslmc_vfio.c | 34 ++++++++++++++++++++++++++++++++++
drivers/bus/fslmc/fslmc_vfio.h | 3 +++
2 files changed, 37 insertions(+)
diff --git a/drivers/bus/fslmc/fslmc_vfio.c b/drivers/bus/fslmc/fslmc_vfio.c
index 6ebf779..d8e3add 100644
--- a/drivers/bus/fslmc/fslmc_vfio.c
+++ b/drivers/bus/fslmc/fslmc_vfio.c
@@ -359,6 +359,40 @@ static int64_t vfio_map_mcp_obj(struct fslmc_vfio_group *group, char *mcp_obj)
}
}
+#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
diff --git a/drivers/bus/fslmc/fslmc_vfio.h b/drivers/bus/fslmc/fslmc_vfio.h
index 7c725f4..ebca2b0 100644
--- a/drivers/bus/fslmc/fslmc_vfio.h
+++ b/drivers/bus/fslmc/fslmc_vfio.h
@@ -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);
--
1.9.1