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From: Gagandeep Singh <g.singh@nxp.com>
To: dev@dpdk.org
Cc: nipun.gupta@nxp.com, thomas@monjalon.net, Gagandeep Singh <g.singh@nxp.com>
Date: Tue, 9 Nov 2021 10:09:06 +0530
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Subject: [dpdk-dev] [PATCH v4 1/5] dma/dpaa: introduce DPAA DMA driver
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The DPAA DMA driver is an implementation of the dmadev APIs,
that provide means to initiate a DMA transaction from CPU.
The initiated DMA is performed without CPU being involved
in the actual DMA transaction. This is achieved via using
the QDMA controller of DPAA SoC.
Signed-off-by: Gagandeep Singh <g.singh@nxp.com>
---
MAINTAINERS | 11 ++++++
doc/guides/dmadevs/dpaa.rst | 54 ++++++++++++++++++++++++++
doc/guides/dmadevs/index.rst | 1 +
doc/guides/rel_notes/release_21_11.rst | 3 ++
drivers/bus/dpaa/dpaa_bus.c | 22 +++++++++++
drivers/bus/dpaa/rte_dpaa_bus.h | 5 +++
drivers/common/dpaax/dpaa_list.h | 2 +
drivers/dma/dpaa/dpaa_qdma.c | 29 ++++++++++++++
drivers/dma/dpaa/dpaa_qdma_logs.h | 46 ++++++++++++++++++++++
drivers/dma/dpaa/meson.build | 14 +++++++
drivers/dma/dpaa/version.map | 4 ++
drivers/dma/meson.build | 1 +
12 files changed, 192 insertions(+)
create mode 100644 doc/guides/dmadevs/dpaa.rst
create mode 100644 drivers/dma/dpaa/dpaa_qdma.c
create mode 100644 drivers/dma/dpaa/dpaa_qdma_logs.h
create mode 100644 drivers/dma/dpaa/meson.build
create mode 100644 drivers/dma/dpaa/version.map
diff --git a/MAINTAINERS b/MAINTAINERS
index e157e12f88..0f333b7baa 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -1377,6 +1377,17 @@ F: drivers/raw/dpaa2_qdma/
F: doc/guides/rawdevs/dpaa2_qdma.rst
+
+Dmadev Drivers
+--------------
+
+NXP DPAA DMA
+M: Gagandeep Singh <g.singh@nxp.com>
+M: Nipun Gupta <nipun.gupta@nxp.com>
+F: drivers/dma/dpaa/
+F: doc/guides/dmadevs/dpaa.rst
+
+
Packet processing
-----------------
diff --git a/doc/guides/dmadevs/dpaa.rst b/doc/guides/dmadevs/dpaa.rst
new file mode 100644
index 0000000000..885a8bb8aa
--- /dev/null
+++ b/doc/guides/dmadevs/dpaa.rst
@@ -0,0 +1,54 @@
+.. SPDX-License-Identifier: BSD-3-Clause
+ Copyright 2021 NXP
+
+NXP DPAA DMA Driver
+=====================
+
+The DPAA DMA is an implementation of the dmadev APIs, that provide means
+to initiate a DMA transaction from CPU. The initiated DMA is performed
+without CPU being involved in the actual DMA transaction. This is achieved
+via using the QDMA controller of DPAA SoC.
+
+The QDMA controller transfers blocks of data between one source and one
+destination. The blocks of data transferred can be represented in memory
+as contiguous or noncontiguous using scatter/gather table(s).
+
+More information can be found at `NXP Official Website
+<http://www.nxp.com/products/microcontrollers-and-processors/arm-processors/qoriq-arm-processors:QORIQ-ARM>`_.
+
+Supported DPAA SoCs
+--------------------
+
+- LS1046A
+- LS1043A
+
+Prerequisites
+-------------
+
+See :doc:`../platform/dpaa` for setup information
+
+- Follow the DPDK :ref:`Getting Started Guide for Linux <linux_gsg>` to setup the basic DPDK environment.
+
+.. note::
+
+ Some part of dpaa bus code (qbman and fman - library) routines are
+ dual licensed (BSD & GPLv2), however they are used as BSD in DPDK in userspace.
+
+Compilation
+------------
+
+For builds using ``meson`` and ``ninja``, the driver will be built when the
+target platform is dpaa-based. No additional compilation steps are necessary.
+
+Initialization
+--------------
+
+On EAL initialization, DPAA DMA devices will be detected on DPAA bus and
+will be probed and populated into their device list.
+
+
+Platform Requirement
+~~~~~~~~~~~~~~~~~~~~
+
+DPAA DMA driver for DPDK can only work on NXP SoCs as listed in the
+``Supported DPAA SoCs``.
diff --git a/doc/guides/dmadevs/index.rst b/doc/guides/dmadevs/index.rst
index c2aa6058e6..6b6406f590 100644
--- a/doc/guides/dmadevs/index.rst
+++ b/doc/guides/dmadevs/index.rst
@@ -12,6 +12,7 @@ an application through DMA API.
:numbered:
cnxk
+ dpaa
hisilicon
idxd
ioat
diff --git a/doc/guides/rel_notes/release_21_11.rst b/doc/guides/rel_notes/release_21_11.rst
index 01923e2deb..ba6ad7bf16 100644
--- a/doc/guides/rel_notes/release_21_11.rst
+++ b/doc/guides/rel_notes/release_21_11.rst
@@ -20,6 +20,9 @@ DPDK Release 21.11
ninja -C build doc
xdg-open build/doc/guides/html/rel_notes/release_21_11.html
+* **Added NXP DPAA DMA driver.**
+
+ * Added a new dmadev driver for NXP DPAA platform.
New Features
------------
diff --git a/drivers/bus/dpaa/dpaa_bus.c b/drivers/bus/dpaa/dpaa_bus.c
index 9a53fdc1fb..737ac8d8c5 100644
--- a/drivers/bus/dpaa/dpaa_bus.c
+++ b/drivers/bus/dpaa/dpaa_bus.c
@@ -250,6 +250,28 @@ dpaa_create_device_list(void)
rte_dpaa_bus.device_count += i;
+ /* Creating QDMA Device */
+ for (i = 0; i < RTE_DPAA_QDMA_DEVICES; i++) {
+ dev = calloc(1, sizeof(struct rte_dpaa_device));
+ if (!dev) {
+ DPAA_BUS_LOG(ERR, "Failed to allocate QDMA device");
+ ret = -1;
+ goto cleanup;
+ }
+
+ dev->device_type = FSL_DPAA_QDMA;
+ dev->id.dev_id = rte_dpaa_bus.device_count + i;
+
+ memset(dev->name, 0, RTE_ETH_NAME_MAX_LEN);
+ sprintf(dev->name, "dpaa_qdma-%d", i+1);
+ DPAA_BUS_LOG(INFO, "%s qdma device added", dev->name);
+ dev->device.name = dev->name;
+ dev->device.devargs = dpaa_devargs_lookup(dev);
+
+ dpaa_add_to_device_list(dev);
+ }
+ rte_dpaa_bus.device_count += i;
+
return 0;
cleanup:
diff --git a/drivers/bus/dpaa/rte_dpaa_bus.h b/drivers/bus/dpaa/rte_dpaa_bus.h
index 97d189f9b0..31a5ea3fca 100644
--- a/drivers/bus/dpaa/rte_dpaa_bus.h
+++ b/drivers/bus/dpaa/rte_dpaa_bus.h
@@ -58,6 +58,9 @@ dpaa_seqn(struct rte_mbuf *mbuf)
/** Device driver supports link state interrupt */
#define RTE_DPAA_DRV_INTR_LSC 0x0008
+/** Number of supported QDMA devices */
+#define RTE_DPAA_QDMA_DEVICES 1
+
#define RTE_DEV_TO_DPAA_CONST(ptr) \
container_of(ptr, const struct rte_dpaa_device, device)
@@ -73,6 +76,7 @@ TAILQ_HEAD(rte_dpaa_driver_list, rte_dpaa_driver);
enum rte_dpaa_type {
FSL_DPAA_ETH = 1,
FSL_DPAA_CRYPTO,
+ FSL_DPAA_QDMA
};
struct rte_dpaa_bus {
@@ -95,6 +99,7 @@ struct rte_dpaa_device {
union {
struct rte_eth_dev *eth_dev;
struct rte_cryptodev *crypto_dev;
+ struct rte_dma_dev *dmadev;
};
struct rte_dpaa_driver *driver;
struct dpaa_device_id id;
diff --git a/drivers/common/dpaax/dpaa_list.h b/drivers/common/dpaax/dpaa_list.h
index e94575982b..319a3562ab 100644
--- a/drivers/common/dpaax/dpaa_list.h
+++ b/drivers/common/dpaax/dpaa_list.h
@@ -35,6 +35,8 @@ do { \
const struct list_head *__p298 = (p); \
((__p298->next == __p298) && (__p298->prev == __p298)); \
})
+#define list_first_entry(ptr, type, member) \
+ list_entry((ptr)->next, type, member)
#define list_add(p, l) \
do { \
struct list_head *__p298 = (p); \
diff --git a/drivers/dma/dpaa/dpaa_qdma.c b/drivers/dma/dpaa/dpaa_qdma.c
new file mode 100644
index 0000000000..29a6ec2fb3
--- /dev/null
+++ b/drivers/dma/dpaa/dpaa_qdma.c
@@ -0,0 +1,29 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright 2021 NXP
+ */
+
+#include <rte_dpaa_bus.h>
+
+static int
+dpaa_qdma_probe(__rte_unused struct rte_dpaa_driver *dpaa_drv,
+ __rte_unused struct rte_dpaa_device *dpaa_dev)
+{
+ return 0;
+}
+
+static int
+dpaa_qdma_remove(__rte_unused struct rte_dpaa_device *dpaa_dev)
+{
+ return 0;
+}
+
+static struct rte_dpaa_driver rte_dpaa_qdma_pmd;
+
+static struct rte_dpaa_driver rte_dpaa_qdma_pmd = {
+ .drv_type = FSL_DPAA_QDMA,
+ .probe = dpaa_qdma_probe,
+ .remove = dpaa_qdma_remove,
+};
+
+RTE_PMD_REGISTER_DPAA(dpaa_qdma, rte_dpaa_qdma_pmd);
+RTE_LOG_REGISTER_DEFAULT(dpaa_qdma_logtype, INFO);
diff --git a/drivers/dma/dpaa/dpaa_qdma_logs.h b/drivers/dma/dpaa/dpaa_qdma_logs.h
new file mode 100644
index 0000000000..01d4a508fc
--- /dev/null
+++ b/drivers/dma/dpaa/dpaa_qdma_logs.h
@@ -0,0 +1,46 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright 2021 NXP
+ */
+
+#ifndef __DPAA_QDMA_LOGS_H__
+#define __DPAA_QDMA_LOGS_H__
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+extern int dpaa_qdma_logtype;
+
+#define DPAA_QDMA_LOG(level, fmt, args...) \
+ rte_log(RTE_LOG_ ## level, dpaa_qdma_logtype, "dpaa_qdma: " \
+ fmt "\n", ## args)
+
+#define DPAA_QDMA_DEBUG(fmt, args...) \
+ rte_log(RTE_LOG_DEBUG, dpaa_qdma_logtype, "dpaa_qdma: %s(): " \
+ fmt "\n", __func__, ## args)
+
+#define DPAA_QDMA_FUNC_TRACE() DPAA_QDMA_DEBUG(">>")
+
+#define DPAA_QDMA_INFO(fmt, args...) \
+ DPAA_QDMA_LOG(INFO, fmt, ## args)
+#define DPAA_QDMA_ERR(fmt, args...) \
+ DPAA_QDMA_LOG(ERR, fmt, ## args)
+#define DPAA_QDMA_WARN(fmt, args...) \
+ DPAA_QDMA_LOG(WARNING, fmt, ## args)
+
+/* DP Logs, toggled out at compile time if level lower than current level */
+#define DPAA_QDMA_DP_LOG(level, fmt, args...) \
+ RTE_LOG_DP(level, PMD, "dpaa_qdma: " fmt "\n", ## args)
+
+#define DPAA_QDMA_DP_DEBUG(fmt, args...) \
+ DPAA_QDMA_DP_LOG(DEBUG, fmt, ## args)
+#define DPAA_QDMA_DP_INFO(fmt, args...) \
+ DPAA_QDMA_DP_LOG(INFO, fmt, ## args)
+#define DPAA_QDMA_DP_WARN(fmt, args...) \
+ DPAA_QDMA_DP_LOG(WARNING, fmt, ## args)
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __DPAA_QDMA_LOGS_H__ */
diff --git a/drivers/dma/dpaa/meson.build b/drivers/dma/dpaa/meson.build
new file mode 100644
index 0000000000..9ab0862ede
--- /dev/null
+++ b/drivers/dma/dpaa/meson.build
@@ -0,0 +1,14 @@
+# SPDX-License-Identifier: BSD-3-Clause
+# Copyright 2021 NXP
+
+if not is_linux
+ build = false
+ reason = 'only supported on linux'
+endif
+
+deps += ['dmadev', 'bus_dpaa']
+sources = files('dpaa_qdma.c')
+
+if cc.has_argument('-Wno-pointer-arith')
+ cflags += '-Wno-pointer-arith'
+endif
diff --git a/drivers/dma/dpaa/version.map b/drivers/dma/dpaa/version.map
new file mode 100644
index 0000000000..7bab7bea48
--- /dev/null
+++ b/drivers/dma/dpaa/version.map
@@ -0,0 +1,4 @@
+DPDK_22 {
+
+ local: *;
+};
diff --git a/drivers/dma/meson.build b/drivers/dma/meson.build
index ebac25d35f..7cdd6cd28f 100644
--- a/drivers/dma/meson.build
+++ b/drivers/dma/meson.build
@@ -3,6 +3,7 @@
drivers = [
'cnxk',
+ 'dpaa',
'hisilicon',
'idxd',
'ioat',
--
2.25.1