[v9,07/23] event/dlb: add flexible interface
diff mbox series

Message ID 1604061740-2868-8-git-send-email-timothy.mcdaniel@intel.com
State Superseded, archived
Delegated to: Jerin Jacob
Headers show
Series
  • Add DLB PMD
Related show

Checks

Context Check Description
ci/checkpatch success coding style OK

Commit Message

Timothy McDaniel Oct. 30, 2020, 12:42 p.m. UTC
This commit introduces the flexible interface. This
interface allows the core code to operate in PF mode (direct
hardware access) or bifurcated mode (hardware configured via
kernel driver). This driver currently only supports PF modei,
but bifurcated mode will be added in a future patch-set.
Note that the flexible interface is not used for data path
operations, and thus there are no performance concerns
related to the use of function pointers.

Signed-off-by: Timothy McDaniel <timothy.mcdaniel@intel.com>
---
 drivers/event/dlb/dlb.c       |  1 +
 drivers/event/dlb/dlb_iface.c | 27 +++++++++++++++++++++++++++
 drivers/event/dlb/dlb_iface.h | 27 +++++++++++++++++++++++++++
 drivers/event/dlb/meson.build |  1 +
 drivers/event/dlb/pf/dlb_pf.c |  1 +
 5 files changed, 57 insertions(+)
 create mode 100644 drivers/event/dlb/dlb_iface.c
 create mode 100644 drivers/event/dlb/dlb_iface.h

Patch
diff mbox series

diff --git a/drivers/event/dlb/dlb.c b/drivers/event/dlb/dlb.c
index 1659f93..8008a50 100644
--- a/drivers/event/dlb/dlb.c
+++ b/drivers/event/dlb/dlb.c
@@ -33,6 +33,7 @@ 
 #include <rte_eventdev_pmd.h>
 
 #include "dlb_priv.h"
+#include "dlb_iface.h"
 #include "dlb_inline_fns.h"
 
 /*
diff --git a/drivers/event/dlb/dlb_iface.c b/drivers/event/dlb/dlb_iface.c
new file mode 100644
index 0000000..dd72120
--- /dev/null
+++ b/drivers/event/dlb/dlb_iface.c
@@ -0,0 +1,27 @@ 
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2016-2020 Intel Corporation
+ */
+
+#include <stdint.h>
+
+#include "dlb_priv.h"
+
+/* DLB PMD Internal interface function pointers.
+ * If VDEV (bifurcated PMD),  these will resolve to functions that issue ioctls
+ * serviced by DLB kernel module.
+ * If PCI (PF PMD),  these will be implemented locally in user mode.
+ */
+
+void (*dlb_iface_low_level_io_init)(struct dlb_eventdev *dlb);
+
+int (*dlb_iface_open)(struct dlb_hw_dev *handle, const char *name);
+
+int (*dlb_iface_get_device_version)(struct dlb_hw_dev *handle,
+				    uint8_t *revision);
+
+int (*dlb_iface_get_num_resources)(struct dlb_hw_dev *handle,
+				   struct dlb_get_num_resources_args *rsrcs);
+
+int (*dlb_iface_get_cq_poll_mode)(struct dlb_hw_dev *handle,
+				  enum dlb_cq_poll_modes *mode);
+
diff --git a/drivers/event/dlb/dlb_iface.h b/drivers/event/dlb/dlb_iface.h
new file mode 100644
index 0000000..416d1b3
--- /dev/null
+++ b/drivers/event/dlb/dlb_iface.h
@@ -0,0 +1,27 @@ 
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2016-2020 Intel Corporation
+ */
+
+#ifndef _DLB_IFACE_H
+#define _DLB_IFACE_H
+
+/* DLB PMD Internal interface function pointers.
+ * If VDEV (bifurcated PMD), these will resolve to functions that issue ioctls
+ * serviced by DLB kernel module.
+ * If PCI (PF PMD), these will be implemented locally in user mode.
+ */
+
+extern void (*dlb_iface_low_level_io_init)(struct dlb_eventdev *dlb);
+
+extern int (*dlb_iface_open)(struct dlb_hw_dev *handle, const char *name);
+
+extern int (*dlb_iface_get_device_version)(struct dlb_hw_dev *handle,
+					   uint8_t *revision);
+
+extern int (*dlb_iface_get_num_resources)(struct dlb_hw_dev *handle,
+				   struct dlb_get_num_resources_args *rsrcs);
+
+extern int (*dlb_iface_get_cq_poll_mode)(struct dlb_hw_dev *handle,
+					 enum dlb_cq_poll_modes *mode);
+
+#endif /* _DLB_IFACE_H */
diff --git a/drivers/event/dlb/meson.build b/drivers/event/dlb/meson.build
index b4bdc8b..8707d3d 100644
--- a/drivers/event/dlb/meson.build
+++ b/drivers/event/dlb/meson.build
@@ -8,6 +8,7 @@  if not is_linux or not dpdk_conf.has('RTE_ARCH_X86_64')
 endif
 
 sources = files('dlb.c',
+		'dlb_iface.c',
 		'pf/dlb_main.c',
 		'pf/dlb_pf.c'
 )
diff --git a/drivers/event/dlb/pf/dlb_pf.c b/drivers/event/dlb/pf/dlb_pf.c
index 3f836f3..05fd76c 100644
--- a/drivers/event/dlb/pf/dlb_pf.c
+++ b/drivers/event/dlb/pf/dlb_pf.c
@@ -27,6 +27,7 @@ 
 #include <rte_string_fns.h>
 
 #include "../dlb_priv.h"
+#include "../dlb_iface.h"
 #include "../dlb_inline_fns.h"
 #include "dlb_main.h"
 #include "base/dlb_hw_types.h"