From: Bruce Richardson <bruce.richardson@intel.com>
To: dev@dpdk.org
Cc: Bruce Richardson <bruce.richardson@intel.com>
Subject: [dpdk-dev] [PATCH 6/8] raw/ioat: add configure, start and stop functions
Date: Thu, 30 May 2019 22:25:23 +0100 [thread overview]
Message-ID: <20190530212525.40370-7-bruce.richardson@intel.com> (raw)
In-Reply-To: <20190530212525.40370-1-bruce.richardson@intel.com>
Allow initializing a driver instance.
Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
---
app/test/test_ioat_rawdev.c | 35 +++++++++++++-
doc/guides/rawdevs/ioat_rawdev.rst | 32 +++++++++++++
drivers/raw/ioat/ioat_rawdev.c | 75 ++++++++++++++++++++++++++++++
drivers/raw/ioat/rte_ioat_rawdev.h | 14 ++++++
4 files changed, 155 insertions(+), 1 deletion(-)
diff --git a/app/test/test_ioat_rawdev.c b/app/test/test_ioat_rawdev.c
index ac1389f6e..36e97347c 100644
--- a/app/test/test_ioat_rawdev.c
+++ b/app/test/test_ioat_rawdev.c
@@ -18,6 +18,39 @@ test_ioat_rawdev(void) { return TEST_SKIPPED; }
#include <rte_rawdev.h>
#include <rte_ioat_rawdev.h>
+static int
+run_ioat_tests(int dev_id)
+{
+#define IOAT_TEST_RINGSIZE 512
+ struct rte_ioat_rawdev_config p = { .ring_size = -1 };
+ struct rte_rawdev_info info = { .dev_private = &p };
+
+ rte_rawdev_info_get(dev_id, &info);
+ if (p.ring_size != 0) {
+ printf("Error, initial ring size is non-zero (%d)\n",
+ (int)p.ring_size);
+ return -1;
+ }
+
+ p.ring_size = IOAT_TEST_RINGSIZE;
+ if (rte_rawdev_configure(dev_id, &info) != 0) {
+ printf("Error with rte_rawdev_configure()\n");
+ return -1;
+ }
+ rte_rawdev_info_get(dev_id, &info);
+ if (p.ring_size != IOAT_TEST_RINGSIZE) {
+ printf("Error, ring size is not %d (%d)\n",
+ IOAT_TEST_RINGSIZE, (int)p.ring_size);
+ return -1;
+ }
+
+ if (rte_rawdev_start(dev_id) != 0) {
+ printf("Error with rte_rawdev_start()\n");
+ return -1;
+ }
+ return 0;
+}
+
static int
test_ioat_rawdev(void)
{
@@ -37,7 +70,7 @@ test_ioat_rawdev(void)
return TEST_SKIPPED;
}
- return 0;
+ return run_ioat_tests(i);
}
#endif /* RTE_LIBRTE_PMD_IOAT_RAWDEV */
diff --git a/doc/guides/rawdevs/ioat_rawdev.rst b/doc/guides/rawdevs/ioat_rawdev.rst
index b68cdffc3..b3fe79033 100644
--- a/doc/guides/rawdevs/ioat_rawdev.rst
+++ b/doc/guides/rawdevs/ioat_rawdev.rst
@@ -79,3 +79,35 @@ the ``dev_private`` field in the ``rte_rawdev_info`` struct should either
be NULL, or else be set to point to a structure of type
``rte_ioat_rawdev_config``, in which case the size of the configured device
input ring will be returned in that structure.
+
+Device Configuration
+~~~~~~~~~~~~~~~~~~~~~
+
+Configuring an IOAT rawdev device is done using the
+``rte_rawdev_configure()`` API, which takes the same structure parameters
+as the, previously referenced, ``rte_rawdev_info_get()`` API. The main
+difference is that, because the parameter is used as input rather than
+output, the ``dev_private`` structure element cannot be NULL, and must
+point to a valid ``rte_ioat_rawdev_config`` structure, containing the ring
+size to be used by the device. The ring size must be a power of two,
+between 64 and 4096.
+
+The following code shows how the device is configured in
+``test_ioat_rawdev.c``:
+
+.. code-block:: C
+
+ #define IOAT_TEST_RINGSIZE 512
+ struct rte_ioat_rawdev_config p = { .ring_size = -1 };
+ struct rte_rawdev_info info = { .dev_private = &p };
+
+ /* ... */
+
+ p.ring_size = IOAT_TEST_RINGSIZE;
+ if (rte_rawdev_configure(dev_id, &info) != 0) {
+ printf("Error with rte_rawdev_configure()\n");
+ return -1;
+ }
+
+Once configured, the device can then be made ready for use by calling the
+``rte_rawdev_start()`` API.
diff --git a/drivers/raw/ioat/ioat_rawdev.c b/drivers/raw/ioat/ioat_rawdev.c
index 90bed2810..b4b70a1e6 100644
--- a/drivers/raw/ioat/ioat_rawdev.c
+++ b/drivers/raw/ioat/ioat_rawdev.c
@@ -24,6 +24,78 @@ static struct rte_pci_driver ioat_pmd_drv;
#define IOAT_PMD_ERR(fmt, args...) IOAT_PMD_LOG(ERR, fmt, ## args)
#define IOAT_PMD_WARN(fmt, args...) IOAT_PMD_LOG(WARNING, fmt, ## args)
+#define DESC_SZ sizeof(struct rte_ioat_desc)
+#define COMPLETION_SZ sizeof(__m128i)
+
+static int
+ioat_dev_configure(const struct rte_rawdev *dev, rte_rawdev_obj_t config)
+{
+ struct rte_ioat_rawdev_config *params = config;
+ struct rte_ioat_rawdev *ioat = dev->dev_private;
+ unsigned short i;
+
+ if (dev->started)
+ return -EBUSY;
+
+ if (params == NULL)
+ return -EINVAL;
+
+ if (params->ring_size > 4096 || params->ring_size < 64 ||
+ !rte_is_power_of_2(params->ring_size))
+ return -EINVAL;
+
+ ioat->ring_size = params->ring_size;
+ if (ioat->desc_ring != NULL) {
+ rte_free(ioat->desc_ring);
+ ioat->desc_ring = NULL;
+ }
+
+ /* allocate one block of memory for both descriptors
+ * and completion handles.
+ */
+ ioat->desc_ring = rte_zmalloc_socket(NULL,
+ (DESC_SZ + COMPLETION_SZ) * ioat->ring_size,
+ 0, /* alignment, default to 64Byte */
+ dev->device->numa_node);
+ if (ioat->desc_ring == NULL)
+ return -ENOMEM;
+ ioat->hdls = (void *)&ioat->desc_ring[ioat->ring_size];
+
+ ioat->ring_addr = rte_malloc_virt2iova(ioat->desc_ring);
+
+ /* configure descriptor ring - each one points to next */
+ for (i = 0; i < ioat->ring_size; i++) {
+ ioat->desc_ring[i].next_desc_addr = ioat->ring_addr +
+ (((i + 1) % ioat->ring_size) * DESC_SZ);
+ }
+
+ return 0;
+}
+
+static int
+ioat_dev_start(struct rte_rawdev *dev)
+{
+ struct rte_ioat_rawdev *ioat = dev->dev_private;
+
+ if (ioat->ring_size == 0 || ioat->desc_ring == NULL)
+ return -EBUSY;
+
+ /* inform hardware of where the descriptor ring is */
+ ioat->regs->chainaddr = ioat->ring_addr;
+ /* inform hardware of where to write the status/completions */
+ ioat->regs->chancmp = ioat->status_addr;
+
+ /* prime the status register to be set to the last element */
+ ioat->status = ioat->ring_addr + ((ioat->ring_size - 1) * DESC_SZ);
+ return 0;
+}
+
+static void
+ioat_dev_stop(struct rte_rawdev *dev)
+{
+ RTE_SET_USED(dev);
+}
+
static void
ioat_dev_info_get(struct rte_rawdev *dev, rte_rawdev_obj_t dev_info)
{
@@ -38,6 +110,9 @@ static int
ioat_rawdev_create(const char *name, struct rte_pci_device *dev)
{
static const struct rte_rawdev_ops ioat_rawdev_ops = {
+ .dev_configure = ioat_dev_configure,
+ .dev_start = ioat_dev_start,
+ .dev_stop = ioat_dev_stop,
.dev_info_get = ioat_dev_info_get,
};
diff --git a/drivers/raw/ioat/rte_ioat_rawdev.h b/drivers/raw/ioat/rte_ioat_rawdev.h
index 7e0d72ca3..7eab216c8 100644
--- a/drivers/raw/ioat/rte_ioat_rawdev.h
+++ b/drivers/raw/ioat/rte_ioat_rawdev.h
@@ -47,9 +47,23 @@ struct rte_ioat_rawdev {
unsigned short ring_size;
struct rte_ioat_desc *desc_ring;
+ __m128i *hdls; /* completion handles for returning to user */
/* to report completions, the device will write status back here */
volatile uint64_t status __rte_cache_aligned;
};
+/**
+ * @internal
+ * Structure representing a descriptor for a copy operation
+ */
+struct rte_ioat_desc {
+ uint32_t xfer_size __rte_cache_aligned;
+ uint32_t desc_control;
+ phys_addr_t src_addr; /* 64 bits */
+ phys_addr_t dest_addr; /* 64 bits */
+ phys_addr_t next_desc_addr; /* 64 bits */
+ uint64_t op_type_specific[4];
+};
+
#endif
--
2.21.0
next prev parent reply other threads:[~2019-05-30 21:26 UTC|newest]
Thread overview: 102+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-05-30 21:25 [dpdk-dev] [PATCH 0/8] raw/ioat: driver for Intel QuickData Technology Bruce Richardson
2019-05-30 21:25 ` [dpdk-dev] [PATCH 1/8] raw/ioat: add initial support for ioat rawdev driver Bruce Richardson
2019-05-30 21:25 ` [dpdk-dev] [PATCH 2/8] usertools/dpdk-devbind.py: add support for IOAT devices Bruce Richardson
2019-05-30 21:25 ` [dpdk-dev] [PATCH 3/8] raw/ioat: add register definition file Bruce Richardson
2019-05-30 23:53 ` Stephen Hemminger
2019-06-06 13:19 ` Bruce Richardson
2019-05-30 21:25 ` [dpdk-dev] [PATCH 4/8] raw/ioat: create device on probe and destroy on release Bruce Richardson
2019-05-30 21:25 ` [dpdk-dev] [PATCH 5/8] raw/ioat: add device info function Bruce Richardson
2019-05-30 21:25 ` Bruce Richardson [this message]
2019-05-30 21:25 ` [dpdk-dev] [PATCH 7/8] raw/ioat: add statistics functions Bruce Richardson
2019-05-30 21:25 ` [dpdk-dev] [PATCH 8/8] raw/ioat: add local API to perform copies Bruce Richardson
2019-06-03 14:44 ` Thomas Monjalon
2019-06-04 12:23 ` Bruce Richardson
2019-06-05 13:52 ` Jerin Jacob Kollanukkaran
2019-06-05 13:57 ` Bruce Richardson
2019-06-25 14:58 ` [dpdk-dev] [PATCH v2 0/8] raw/ioat: driver for Intel QuickData Technology Bruce Richardson
2019-06-25 14:58 ` [dpdk-dev] [PATCH v2 1/8] raw/ioat: add initial support for ioat rawdev driver Bruce Richardson
2019-06-25 14:58 ` [dpdk-dev] [PATCH v2 2/8] usertools/dpdk-devbind.py: add support for IOAT devices Bruce Richardson
2019-06-25 14:58 ` [dpdk-dev] [PATCH v2 3/8] raw/ioat: add register definition file Bruce Richardson
2019-06-25 14:58 ` [dpdk-dev] [PATCH v2 4/8] raw/ioat: create device on probe and destroy on release Bruce Richardson
2019-06-25 14:58 ` [dpdk-dev] [PATCH v2 5/8] raw/ioat: add device info function Bruce Richardson
2019-06-25 14:58 ` [dpdk-dev] [PATCH v2 6/8] raw/ioat: add configure, start and stop functions Bruce Richardson
2019-06-25 14:58 ` [dpdk-dev] [PATCH v2 7/8] raw/ioat: add statistics functions Bruce Richardson
2019-06-25 14:58 ` [dpdk-dev] [PATCH v2 8/8] raw/ioat: add local API to perform copies Bruce Richardson
2019-06-27 10:40 ` [dpdk-dev] [PATCH v3 0/8] raw/ioat: driver for Intel QuickData Technology Bruce Richardson
2019-06-27 10:40 ` [dpdk-dev] [PATCH v3 1/8] raw/ioat: add initial support for ioat rawdev driver Bruce Richardson
2019-06-27 11:55 ` Burakov, Anatoly
2019-06-28 12:43 ` Bruce Richardson
2019-07-01 7:38 ` Hu, Jiayu
2019-07-01 7:51 ` Thomas Monjalon
2019-07-01 8:29 ` Hu, Jiayu
2019-07-01 14:30 ` Bruce Richardson
2019-06-27 10:40 ` [dpdk-dev] [PATCH v3 2/8] usertools/dpdk-devbind.py: add support for IOAT devices Bruce Richardson
2019-06-27 11:57 ` Burakov, Anatoly
2019-06-27 10:40 ` [dpdk-dev] [PATCH v3 3/8] raw/ioat: add register definition file Bruce Richardson
2019-06-27 12:01 ` Burakov, Anatoly
2019-06-28 12:44 ` Bruce Richardson
2019-06-27 10:40 ` [dpdk-dev] [PATCH v3 4/8] raw/ioat: create device on probe and destroy on release Bruce Richardson
2019-06-27 12:09 ` Burakov, Anatoly
2019-06-28 16:21 ` Bruce Richardson
2019-06-27 12:28 ` Burakov, Anatoly
2019-06-28 12:46 ` Bruce Richardson
2019-06-28 12:59 ` Burakov, Anatoly
2019-06-28 13:15 ` Bruce Richardson
2019-06-28 13:28 ` Burakov, Anatoly
2019-06-27 10:40 ` [dpdk-dev] [PATCH v3 5/8] raw/ioat: add device info function Bruce Richardson
2019-06-27 12:16 ` Burakov, Anatoly
2019-06-28 21:09 ` Bruce Richardson
2019-06-27 10:40 ` [dpdk-dev] [PATCH v3 6/8] raw/ioat: add configure, start and stop functions Bruce Richardson
2019-06-27 12:29 ` Burakov, Anatoly
2019-06-27 16:37 ` Pattan, Reshma
2019-06-28 21:21 ` Bruce Richardson
2019-06-27 10:40 ` [dpdk-dev] [PATCH v3 7/8] raw/ioat: add statistics functions Bruce Richardson
2019-06-27 12:38 ` Burakov, Anatoly
2019-07-01 10:11 ` Pattan, Reshma
2019-07-01 12:56 ` Bruce Richardson
2019-06-27 10:40 ` [dpdk-dev] [PATCH v3 8/8] raw/ioat: add local API to perform copies Bruce Richardson
2019-06-27 12:45 ` Burakov, Anatoly
2019-06-27 15:34 ` [dpdk-dev] [PATCH v3 0/8] raw/ioat: driver for Intel QuickData Technology Van Haaren, Harry
2019-07-01 15:55 ` [dpdk-dev] [PATCH v4 0/9] " Bruce Richardson
2019-07-01 15:55 ` [dpdk-dev] [PATCH v4 1/9] rawdev: allow devices to skip extra memory allocation Bruce Richardson
2019-07-02 11:34 ` Hemant Agrawal
2019-07-02 11:43 ` Shreyansh Jain
2019-07-02 12:41 ` Bruce Richardson
2019-07-01 15:55 ` [dpdk-dev] [PATCH v4 2/9] raw/ioat: add initial support for ioat rawdev driver Bruce Richardson
2019-07-01 15:55 ` [dpdk-dev] [PATCH v4 3/9] usertools/dpdk-devbind.py: add support for IOAT devices Bruce Richardson
2019-07-01 15:55 ` [dpdk-dev] [PATCH v4 4/9] raw/ioat: add register definition file Bruce Richardson
2019-07-01 15:55 ` [dpdk-dev] [PATCH v4 5/9] raw/ioat: create device on probe and destroy on release Bruce Richardson
2019-07-02 9:39 ` Burakov, Anatoly
2019-07-01 15:55 ` [dpdk-dev] [PATCH v4 6/9] raw/ioat: add device info function Bruce Richardson
2019-07-02 2:33 ` Hu, Jiayu
2019-07-02 8:28 ` Bruce Richardson
2019-07-02 9:40 ` Burakov, Anatoly
2019-07-01 15:55 ` [dpdk-dev] [PATCH v4 7/9] raw/ioat: add configure, start and stop functions Bruce Richardson
2019-07-02 9:49 ` Burakov, Anatoly
2019-07-02 9:59 ` Bruce Richardson
2019-07-01 15:55 ` [dpdk-dev] [PATCH v4 8/9] raw/ioat: add statistics functions Bruce Richardson
2019-07-02 9:50 ` Burakov, Anatoly
2019-07-01 15:56 ` [dpdk-dev] [PATCH v4 9/9] raw/ioat: add local API to perform copies Bruce Richardson
2019-07-01 15:58 ` [dpdk-dev] [PATCH v4 0/9] raw/ioat: driver for Intel QuickData Technology Bruce Richardson
2019-07-02 14:12 ` [dpdk-dev] [PATCH v5 " Bruce Richardson
2019-07-02 14:12 ` [dpdk-dev] [PATCH v5 1/9] rawdev: allow devices to skip extra memory allocation Bruce Richardson
2019-07-02 14:12 ` [dpdk-dev] [PATCH v5 2/9] raw/ioat: add initial support for ioat rawdev driver Bruce Richardson
2019-07-03 1:53 ` Hu, Jiayu
2019-07-02 14:12 ` [dpdk-dev] [PATCH v5 3/9] usertools/dpdk-devbind.py: add support for IOAT devices Bruce Richardson
2019-07-03 1:54 ` Hu, Jiayu
2019-07-02 14:12 ` [dpdk-dev] [PATCH v5 4/9] raw/ioat: add register definition file Bruce Richardson
2019-07-02 14:12 ` [dpdk-dev] [PATCH v5 5/9] raw/ioat: create device on probe and destroy on release Bruce Richardson
2019-07-03 1:57 ` Hu, Jiayu
2019-07-02 14:12 ` [dpdk-dev] [PATCH v5 6/9] raw/ioat: add device info function Bruce Richardson
2019-07-03 1:58 ` Hu, Jiayu
2019-07-02 14:12 ` [dpdk-dev] [PATCH v5 7/9] raw/ioat: add configure, start and stop functions Bruce Richardson
2019-07-03 1:59 ` Hu, Jiayu
2019-07-03 16:21 ` Aaron Conole
2019-07-03 16:44 ` Bruce Richardson
2019-07-03 20:26 ` Aaron Conole
2019-07-02 14:12 ` [dpdk-dev] [PATCH v5 8/9] raw/ioat: add statistics functions Bruce Richardson
2019-07-03 2:00 ` Hu, Jiayu
2019-07-02 14:12 ` [dpdk-dev] [PATCH v5 9/9] raw/ioat: add local API to perform copies Bruce Richardson
2019-07-03 2:01 ` Hu, Jiayu
2019-07-04 7:45 ` [dpdk-dev] [PATCH v5 0/9] raw/ioat: driver for Intel QuickData Technology Thomas Monjalon
2019-07-04 22:17 ` Ferruh Yigit
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