[dpdk-dev] [PATCH v2 5/6] dma/hisilicon: support multi-process

[Chengwen Feng]

This patch add multi-process support for Kunpeng DMA devices.

Signed-off-by: Chengwen Feng <fengcheng...@huawei.com>
---
 drivers/dma/hisilicon/hisi_dmadev.c | 21 +++++++++++++--------
 1 file changed, 13 insertions(+), 8 deletions(-)

diff --git a/drivers/dma/hisilicon/hisi_dmadev.c 
b/drivers/dma/hisilicon/hisi_dmadev.c
index d03967cae3..05066b4d0e 100644
--- a/drivers/dma/hisilicon/hisi_dmadev.c
+++ b/drivers/dma/hisilicon/hisi_dmadev.c
@@ -392,8 +392,10 @@ hisi_dma_stop(struct rte_dma_dev *dev)
 static int
 hisi_dma_close(struct rte_dma_dev *dev)
 {
-       /* The dmadev already stopped */
-       hisi_dma_free_iomem(dev->data->dev_private);
+       if (rte_eal_process_type() == RTE_PROC_PRIMARY) {
+               /* The dmadev already stopped */
+               hisi_dma_free_iomem(dev->data->dev_private);
+       }
        return 0;
 }
 
@@ -815,11 +817,13 @@ hisi_dma_create(struct rte_pci_device *pci_dev, uint8_t 
queue_id,
        hw->cq_head_reg = hisi_dma_queue_regaddr(hw,
                                                 HISI_DMA_QUEUE_CQ_HEAD_REG);
 
-       ret = hisi_dma_reset_hw(hw);
-       if (ret) {
-               HISI_DMA_LOG(ERR, "%s init device fail!", name);
-               (void)rte_dma_pmd_release(name);
-               return -EIO;
+       if (rte_eal_process_type() == RTE_PROC_PRIMARY) {
+               ret = hisi_dma_reset_hw(hw);
+               if (ret) {
+                       HISI_DMA_LOG(ERR, "%s init device fail!", name);
+                       (void)rte_dma_pmd_release(name);
+                       return -EIO;
+               }
        }
 
        dev->state = RTE_DMA_DEV_READY;
@@ -872,7 +876,8 @@ hisi_dma_probe(struct rte_pci_driver *pci_drv __rte_unused,
                return ret;
        HISI_DMA_LOG(DEBUG, "%s read PCI revision: 0x%x", name, revision);
 
-       hisi_dma_init_gbl(pci_dev->mem_resource[2].addr, revision);
+       if (rte_eal_process_type() == RTE_PROC_PRIMARY)
+               hisi_dma_init_gbl(pci_dev->mem_resource[2].addr, revision);
 
        for (i = 0; i < HISI_DMA_MAX_HW_QUEUES; i++) {
                ret = hisi_dma_create(pci_dev, i, revision);
-- 
2.33.0