[dpdk-dev] [PATCH v2 2/8] raw/octeontx2_dma: update probe function

[jerinj at marvell.com]

From: Satha Rao <skoteshwar at marvell.com>

Probe function enhanced to allocate and initialize PMD private data.

Signed-off-by: Satha Rao <skoteshwar at marvell.com>
Signed-off-by: Vamsi Attunuru <vattunuru at marvell.com>
---
 drivers/raw/octeontx2_dma/otx2_dpi_rawdev.c | 25 +++++++--
 drivers/raw/octeontx2_dma/otx2_dpi_rawdev.h | 56 +++++++++++++++++++++
 2 files changed, 78 insertions(+), 3 deletions(-)
 create mode 100644 drivers/raw/octeontx2_dma/otx2_dpi_rawdev.h

diff --git a/drivers/raw/octeontx2_dma/otx2_dpi_rawdev.c b/drivers/raw/octeontx2_dma/otx2_dpi_rawdev.c
index c363bf44d..175177224 100644
--- a/drivers/raw/octeontx2_dma/otx2_dpi_rawdev.c
+++ b/drivers/raw/octeontx2_dma/otx2_dpi_rawdev.c
@@ -16,6 +16,8 @@
 
 #include <otx2_common.h>
 
+#include "otx2_dpi_rawdev.h"
+
 static const struct rte_pci_id pci_dma_map[] = {
 	{
 		RTE_PCI_DEVICE(PCI_VENDOR_ID_CAVIUM,
@@ -31,11 +33,13 @@ otx2_dpi_rawdev_probe(struct rte_pci_driver *pci_drv __rte_unused,
 		      struct rte_pci_device *pci_dev)
 {
 	char name[RTE_RAWDEV_NAME_MAX_LEN];
+	struct dpi_vf_s *dpivf = NULL;
 	struct rte_rawdev *rawdev;
+	uint16_t vf_id;
 
 	/* For secondary processes, the primary has done all the work */
 	if (rte_eal_process_type() != RTE_PROC_PRIMARY)
-		return 0;
+		return DPI_DMA_QUEUE_SUCCESS;
 
 	if (pci_dev->mem_resource[0].addr == NULL) {
 		otx2_dpi_dbg("Empty bars %p %p", pci_dev->mem_resource[0].addr,
@@ -49,7 +53,8 @@ otx2_dpi_rawdev_probe(struct rte_pci_driver *pci_drv __rte_unused,
 		 pci_dev->addr.function);
 
 	/* Allocate device structure */
-	rawdev = rte_rawdev_pmd_allocate(name, 0, rte_socket_id());
+	rawdev = rte_rawdev_pmd_allocate(name, sizeof(struct dpi_vf_s),
+					 rte_socket_id());
 	if (rawdev == NULL) {
 		otx2_err("Rawdev allocation failed");
 		return -EINVAL;
@@ -58,7 +63,21 @@ otx2_dpi_rawdev_probe(struct rte_pci_driver *pci_drv __rte_unused,
 	rawdev->device = &pci_dev->device;
 	rawdev->driver_name = pci_dev->driver->driver.name;
 
-	return 0;
+	dpivf = rawdev->dev_private;
+	if (dpivf->state != DPI_QUEUE_STOP) {
+		otx2_dpi_dbg("Device already started!!!");
+		return -ENODEV;
+	}
+
+	vf_id = ((pci_dev->addr.devid & 0x1F) << 3) |
+		 (pci_dev->addr.function & 0x7);
+	vf_id -= 1;
+	dpivf->state = DPI_QUEUE_START;
+	dpivf->vf_id = vf_id;
+	dpivf->vf_bar0 = (uintptr_t)pci_dev->mem_resource[0].addr;
+	dpivf->vf_bar2 = (uintptr_t)pci_dev->mem_resource[2].addr;
+
+	return DPI_DMA_QUEUE_SUCCESS;
 }
 
 static int
diff --git a/drivers/raw/octeontx2_dma/otx2_dpi_rawdev.h b/drivers/raw/octeontx2_dma/otx2_dpi_rawdev.h
new file mode 100644
index 000000000..8a672d0a6
--- /dev/null
+++ b/drivers/raw/octeontx2_dma/otx2_dpi_rawdev.h
@@ -0,0 +1,56 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(C) 2019 Marvell International Ltd.
+ */
+
+#ifndef _DPI_RAWDEV_H_
+#define _DPI_RAWDEV_H_
+
+#define DPI_QUEUE_OPEN	0x1
+#define DPI_QUEUE_CLOSE	0x2
+
+/* DPI VF register offsets from VF_BAR0 */
+#define DPI_VDMA_EN             (0x0)
+#define DPI_VDMA_REQQ_CTL       (0x8)
+#define DPI_VDMA_DBELL          (0x10)
+#define DPI_VDMA_SADDR          (0x18)
+#define DPI_VDMA_COUNTS         (0x20)
+#define DPI_VDMA_NADDR          (0x28)
+#define DPI_VDMA_IWBUSY         (0x30)
+#define DPI_VDMA_CNT            (0x38)
+#define DPI_VF_INT              (0x100)
+#define DPI_VF_INT_W1S          (0x108)
+#define DPI_VF_INT_ENA_W1C      (0x110)
+#define DPI_VF_INT_ENA_W1S      (0x118)
+
+#define DPI_MAX_VFS             8
+#define DPI_DMA_CMD_SIZE        64
+#define DPI_CHUNK_SIZE		1024
+#define DPI_QUEUE_STOP		0x0
+#define DPI_QUEUE_START		0x1
+
+struct dpi_vf_s {
+	struct rte_pci_device *dev;
+	uint8_t state;
+	uint16_t vf_id;
+	uint8_t domain;
+	uintptr_t vf_bar0;
+	uintptr_t vf_bar2;
+
+	uint16_t pool_size_m1;
+	uint16_t index;
+	uint64_t *base_ptr;
+	void *chunk_pool;
+	struct otx2_mbox *mbox;
+};
+
+struct dpi_rawdev_conf_s {
+	void *chunk_pool;
+};
+
+enum dpi_dma_queue_result_e {
+	DPI_DMA_QUEUE_SUCCESS = 0,
+	DPI_DMA_QUEUE_NO_MEMORY = -1,
+	DPI_DMA_QUEUE_INVALID_PARAM = -2,
+};
+
+#endif /* _DPI_RAWDEV_H_ */
-- 
2.22.0