net/nfp: support vNIC Rx/Tx BAR mappings

[dpdk.git] / drivers / net / nfp / nfp_nspu.c

diff --git a/drivers/net/nfp/nfp_nspu.c b/drivers/net/nfp/nfp_nspu.c
index 827f0b2..56fd063 100644 (file)
--- a/drivers/net/nfp/nfp_nspu.c
+++ b/drivers/net/nfp/nfp_nspu.c
@@ -22,7 +22,8 @@
 #define NFP_NSP_TARGET   7
 
 /* Expansion BARs for mapping PF vnic BARs */
-#define NFP_NET_PF_CFG_EXP_BAR    6
+#define NFP_NET_PF_CFG_EXP_BAR          6
+#define NFP_NET_PF_HW_QUEUES_EXP_BAR    5
 
 /*
  * This is an NFP internal address used for configuring properly an NFP
@@ -509,3 +510,21 @@ nfp_nsp_map_ctrl_bar(nspu_desc_t *desc, uint64_t *pcie_offset)
 
        return 0;
 }
+
+/*
+ * This is a hardcoded fixed NFP internal CPP bus address for the hw queues unit
+ * inside the PCIE island.
+ */
+#define NFP_CPP_PCIE_QUEUES ((uint64_t)(1ULL << 39) |  0x80000 | \
+                            ((uint64_t)0x4 & 0x3f) << 32)
+
+/* Configure a specific NFP expansion bar for accessing the vNIC rx/tx BARs */
+void
+nfp_nsp_map_queues_bar(nspu_desc_t *desc, uint64_t *pcie_offset)
+{
+       nfp_nspu_mem_bar_cfg(desc, NFP_NET_PF_HW_QUEUES_EXP_BAR, 0,
+                            NFP_CPP_PCIE_QUEUES, pcie_offset);
+
+       /* This is the pcie offset to use by the host */
+       *pcie_offset |= ((NFP_NET_PF_HW_QUEUES_EXP_BAR & 0x7) << (27 - 3));
+}