[20.11,14/20] raw/ioat: add start and stop functions for idxd devices
diff mbox series

Message ID 20200721095140.719297-15-bruce.richardson@intel.com
State Superseded
Delegated to: Thomas Monjalon
Headers show
Series
  • raw/ioat: enhancements and new hardware support
Related show

Checks

Context Check Description
ci/Intel-compilation fail apply issues
ci/checkpatch warning coding style issues

Commit Message

Bruce Richardson July 21, 2020, 9:51 a.m. UTC
Add the start and stop functions for DSA hardware devices.

Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
Signed-off-by: Kevin Laatz <kevin.laatz@intel.com>
---
 drivers/raw/ioat/idxd_pci.c  | 52 ++++++++++++++++++++++++++++++++++++
 drivers/raw/ioat/idxd_vdev.c | 50 ++++++++++++++++++++++++++++++++++
 2 files changed, 102 insertions(+)

Patch
diff mbox series

diff --git a/drivers/raw/ioat/idxd_pci.c b/drivers/raw/ioat/idxd_pci.c
index 762efd5ac..6655cf9b7 100644
--- a/drivers/raw/ioat/idxd_pci.c
+++ b/drivers/raw/ioat/idxd_pci.c
@@ -51,10 +51,62 @@  idxd_is_wq_enabled(struct idxd_rawdev *idxd)
 	return (state & WQ_STATE_MASK) == 0x1;
 }
 
+static void
+idxd_pci_dev_stop(struct rte_rawdev *dev)
+{
+	struct idxd_rawdev *idxd = dev->dev_private;
+	uint8_t err_code;
+
+	if (!idxd_is_wq_enabled(idxd)) {
+		IOAT_PMD_ERR("Work queue %d already disabled", idxd->qid);
+		return;
+	}
+
+	err_code = idxd_pci_dev_command(idxd, idxd_disable_wq);
+	if (err_code || idxd_is_wq_enabled(idxd)) {
+		IOAT_PMD_ERR("Failed disabling work queue %d, error code: %#x",
+				idxd->qid, err_code);
+		return;
+	}
+	IOAT_PMD_DEBUG("Work queue %d disabled OK", idxd->qid);
+
+	return;
+}
+
+static int
+idxd_pci_dev_start(struct rte_rawdev *dev)
+{
+	struct idxd_rawdev *idxd = dev->dev_private;
+	uint8_t err_code;
+
+	if (idxd_is_wq_enabled(idxd)) {
+		IOAT_PMD_WARN("WQ %d already enabled", idxd->qid);
+		return 0;
+	}
+
+	if (idxd->public.batch_ring == NULL) {
+		IOAT_PMD_ERR("WQ %d has not been fully configured", idxd->qid);
+		return -EINVAL;
+	}
+
+	err_code = idxd_pci_dev_command(idxd, idxd_enable_wq);
+	if (err_code || !idxd_is_wq_enabled(idxd)) {
+		IOAT_PMD_ERR("Failed enabling work queue %d, error code: %#x",
+				idxd->qid, err_code);
+		return err_code == 0 ? -1 : err_code;
+	}
+
+	IOAT_PMD_DEBUG("Work queue %d enabled OK", idxd->qid);
+
+	return 0;
+}
+
 static const struct rte_rawdev_ops idxd_pci_ops = {
 		.dev_selftest = idxd_rawdev_test,
 		.dump = idxd_dev_dump,
 		.dev_configure = idxd_dev_configure,
+		.dev_start = idxd_pci_dev_start,
+		.dev_stop = idxd_pci_dev_stop,
 };
 
 /* each portal uses 4 x 4k pages */
diff --git a/drivers/raw/ioat/idxd_vdev.c b/drivers/raw/ioat/idxd_vdev.c
index 90ad11006..ab7efd216 100644
--- a/drivers/raw/ioat/idxd_vdev.c
+++ b/drivers/raw/ioat/idxd_vdev.c
@@ -32,10 +32,60 @@  struct idxd_vdev_args {
 	uint8_t wq_id;
 };
 
+static void
+idxd_vdev_stop(struct rte_rawdev *dev)
+{
+	struct idxd_rawdev *idxd = dev->dev_private;
+	int ret;
+
+	if (!accfg_wq_is_enabled(idxd->u.vdev.wq)) {
+		IOAT_PMD_ERR("Work queue %s already disabled",
+				accfg_wq_get_devname(idxd->u.vdev.wq));
+		return;
+	}
+
+	ret = accfg_wq_disable(idxd->u.vdev.wq);
+	if (ret) {
+		IOAT_PMD_INFO("Work queue %s not disabled, continuing...",
+				accfg_wq_get_devname(idxd->u.vdev.wq));
+		return;
+	}
+	IOAT_PMD_DEBUG("Disabling work queue %s OK",
+			accfg_wq_get_devname(idxd->u.vdev.wq));
+
+	return;
+}
+
+static int
+idxd_vdev_start(struct rte_rawdev *dev)
+{
+	struct idxd_rawdev *idxd = dev->dev_private;
+	int ret;
+
+	if (accfg_wq_is_enabled(idxd->u.vdev.wq)) {
+		IOAT_PMD_ERR("Work queue %s already enabled",
+				accfg_wq_get_devname(idxd->u.vdev.wq));
+		return 0;
+	}
+
+	ret = accfg_wq_enable(idxd->u.vdev.wq);
+	if (ret) {
+		IOAT_PMD_ERR("Error enabling work queue %s",
+				accfg_wq_get_devname(idxd->u.vdev.wq));
+		return -1;
+	}
+	IOAT_PMD_DEBUG("Enabling work queue %s OK",
+			accfg_wq_get_devname(idxd->u.vdev.wq));
+
+	return 0;
+}
+
 static const struct rte_rawdev_ops idxd_vdev_ops = {
 		.dev_selftest = idxd_rawdev_test,
 		.dump = idxd_dev_dump,
 		.dev_configure = idxd_dev_configure,
+		.dev_start = idxd_vdev_start,
+		.dev_stop = idxd_vdev_stop,
 };
 
 static void *