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From: Tomasz Duszynski <tduszynski@marvell.com>
To: <dev@dpdk.org>
CC: <jerinj@marvell.com>, Tomasz Duszynski <tduszynski@marvell.com>
Subject: [PATCH 06/10] raw/cnxk_gpio: support enqueuing buffers
Date: Wed, 17 Nov 2021 01:21:51 +0100
Message-ID: <20211117002155.293267-7-tduszynski@marvell.com>
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Add dummy support for enqueuing buffers.
Signed-off-by: Tomasz Duszynski <tduszynski@marvell.com>
---
drivers/raw/cnxk_gpio/cnxk_gpio.c | 46 +++++++++++++++++++++++
drivers/raw/cnxk_gpio/cnxk_gpio.h | 1 +
drivers/raw/cnxk_gpio/meson.build | 1 +
drivers/raw/cnxk_gpio/rte_pmd_cnxk_gpio.h | 38 +++++++++++++++++++
4 files changed, 86 insertions(+)
create mode 100644 drivers/raw/cnxk_gpio/rte_pmd_cnxk_gpio.h
diff --git a/drivers/raw/cnxk_gpio/cnxk_gpio.c b/drivers/raw/cnxk_gpio/cnxk_gpio.c
index 8ac3c5e1be..c08ccdfbb8 100644
--- a/drivers/raw/cnxk_gpio/cnxk_gpio.c
+++ b/drivers/raw/cnxk_gpio/cnxk_gpio.c
@@ -14,6 +14,7 @@
#include <roc_api.h>
#include "cnxk_gpio.h"
+#include "rte_pmd_cnxk_gpio.h"
#define CNXK_GPIO_BUFSZ 128
#define CNXK_GPIO_CLASS_PATH "/sys/class/gpio"
@@ -262,7 +263,52 @@ cnxk_gpio_queue_count(struct rte_rawdev *dev)
return gpiochip->num_gpios;
}
+static int
+cnxk_gpio_process_buf(struct cnxk_gpio *gpio, struct rte_rawdev_buf *rbuf)
+{
+ struct cnxk_gpio_msg *msg = rbuf->buf_addr;
+ void *rsp = NULL;
+
+ switch (msg->type) {
+ default:
+ return -EINVAL;
+ }
+
+ /* get rid of last response if any */
+ if (gpio->rsp) {
+ RTE_LOG(WARNING, PMD, "previous response got overwritten\n");
+ rte_free(gpio->rsp);
+ }
+ gpio->rsp = rsp;
+
+ return 0;
+}
+
+static int
+cnxk_gpio_enqueue_bufs(struct rte_rawdev *dev, struct rte_rawdev_buf **buffers,
+ unsigned int count, rte_rawdev_obj_t context)
+{
+ struct cnxk_gpiochip *gpiochip = dev->dev_private;
+ unsigned int queue = (size_t)context;
+ struct cnxk_gpio *gpio;
+ int ret;
+
+ if (count == 0)
+ return 0;
+
+ gpio = cnxk_gpio_lookup(gpiochip, queue);
+ if (!gpio)
+ return -ENODEV;
+
+ ret = cnxk_gpio_process_buf(gpio, buffers[0]);
+ if (ret)
+ return ret;
+
+ return 1;
+}
+
static const struct rte_rawdev_ops cnxk_gpio_rawdev_ops = {
+ .enqueue_bufs = cnxk_gpio_enqueue_bufs,
.queue_def_conf = cnxk_gpio_queue_def_conf,
.queue_count = cnxk_gpio_queue_count,
.queue_setup = cnxk_gpio_queue_setup,
diff --git a/drivers/raw/cnxk_gpio/cnxk_gpio.h b/drivers/raw/cnxk_gpio/cnxk_gpio.h
index 0ee9789a01..1eadde965e 100644
--- a/drivers/raw/cnxk_gpio/cnxk_gpio.h
+++ b/drivers/raw/cnxk_gpio/cnxk_gpio.h
@@ -7,6 +7,7 @@
struct cnxk_gpio {
struct cnxk_gpiochip *gpiochip;
+ void *rsp;
int num;
};
diff --git a/drivers/raw/cnxk_gpio/meson.build b/drivers/raw/cnxk_gpio/meson.build
index 9a7e716c1e..3fbfdd838c 100644
--- a/drivers/raw/cnxk_gpio/meson.build
+++ b/drivers/raw/cnxk_gpio/meson.build
@@ -6,3 +6,4 @@ deps += ['bus_vdev', 'common_cnxk', 'rawdev', 'kvargs']
sources = files(
'cnxk_gpio.c',
)
+headers = files('rte_pmd_cnxk_gpio.h')
diff --git a/drivers/raw/cnxk_gpio/rte_pmd_cnxk_gpio.h b/drivers/raw/cnxk_gpio/rte_pmd_cnxk_gpio.h
new file mode 100644
index 0000000000..c71065e10c
--- /dev/null
+++ b/drivers/raw/cnxk_gpio/rte_pmd_cnxk_gpio.h
@@ -0,0 +1,38 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(C) 2021 Marvell.
+ */
+
+#ifndef _RTE_PMD_CNXK_GPIO_H_
+#define _RTE_PMD_CNXK_GPIO_H_
+
+/**
+ * @file rte_pmd_cnxk_gpio.h
+ *
+ * Marvell GPIO PMD specific structures and interface
+ *
+ * This API allows applications to manage GPIOs in user space along with
+ * installing interrupt handlers for low latency signal processing.
+ */
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/** Available message types */
+enum cnxk_gpio_msg_type {
+ /** Invalid message type */
+ CNXK_GPIO_MSG_TYPE_INVALID,
+};
+
+struct cnxk_gpio_msg {
+ /** Message type */
+ enum cnxk_gpio_msg_type type;
+ /** Message data passed to PMD or received from PMD */
+ void *data;
+};
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _RTE_PMD_CNXK_GPIO_H_ */
--
2.25.1