From 02ce8e88373c98ed661e71f1b1d972cd3abca9c6 Mon Sep 17 00:00:00 2001 From: Timothy McDaniel Date: Sun, 1 Nov 2020 17:29:59 -0600 Subject: [PATCH] event/dlb: add flexible interface 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 Reviewed-by: Gage Eads --- 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 diff --git a/drivers/event/dlb/dlb.c b/drivers/event/dlb/dlb.c index 1659f93036..8008a50f98 100644 --- a/drivers/event/dlb/dlb.c +++ b/drivers/event/dlb/dlb.c @@ -33,6 +33,7 @@ #include #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 0000000000..dd72120d5a --- /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 + +#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 0000000000..416d1b3ca9 --- /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 61c0182e0c..0e66cdc1a0 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 3f836f39c5..05fd76c61d 100644 --- a/drivers/event/dlb/pf/dlb_pf.c +++ b/drivers/event/dlb/pf/dlb_pf.c @@ -27,6 +27,7 @@ #include #include "../dlb_priv.h" +#include "../dlb_iface.h" #include "../dlb_inline_fns.h" #include "dlb_main.h" #include "base/dlb_hw_types.h" -- 2.20.1