[Arm-dev] [PATCH 30/30] net: thunderx: Introduce BGX_ID_MASK macro to extract bgx_id

[mohun106 at gmail.com]

From: Radha Mohan Chintakuntla <rchintakuntla at cavium.com>

On cn83xx family there are 4 BGX interfaces. This patch adds a macro to
extract the bgx_id that is used throughout the driver to identify the
bgx number.

Signed-off-by: Radha Mohan Chintakuntla <rchintakuntla at cavium.com>
Signed-off-by: Sunil Goutham <sgoutham at cavium.com>
---
 drivers/net/ethernet/cavium/thunder/thunder_bgx.c |    4 ++--
 drivers/net/ethernet/cavium/thunder/thunder_bgx.h |    2 ++
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/cavium/thunder/thunder_bgx.c b/drivers/net/ethernet/cavium/thunder/thunder_bgx.c
index 64dc826..99eea16 100644
--- a/drivers/net/ethernet/cavium/thunder/thunder_bgx.c
+++ b/drivers/net/ethernet/cavium/thunder/thunder_bgx.c
@@ -1255,8 +1255,8 @@ static int bgx_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 
 	pci_read_config_word(pdev, PCI_DEVICE_ID, &sdevid);
 	if (sdevid != PCI_DEVICE_ID_THUNDER_RGX) {
-		bgx->bgx_id =
-		    (pci_resource_start(pdev, PCI_CFG_REG_BAR_NUM) >> 24) & 1;
+		bgx->bgx_id = (pci_resource_start(pdev,
+			PCI_CFG_REG_BAR_NUM) >> 24) & BGX_ID_MASK;
 		bgx->bgx_id += nic_get_node_id(pdev) * MAX_BGX_PER_NODE;
 		bgx->max_lmac = MAX_LMAC_PER_BGX;
 		bgx_vnic[bgx->bgx_id] = bgx;
diff --git a/drivers/net/ethernet/cavium/thunder/thunder_bgx.h b/drivers/net/ethernet/cavium/thunder/thunder_bgx.h
index d59c71e..01cc7c8 100644
--- a/drivers/net/ethernet/cavium/thunder/thunder_bgx.h
+++ b/drivers/net/ethernet/cavium/thunder/thunder_bgx.h
@@ -28,6 +28,8 @@
 #define    MAX_DMAC_PER_LMAC			8
 #define    MAX_FRAME_SIZE			9216
 
+#define	   BGX_ID_MASK				0x3
+
 #define    MAX_DMAC_PER_LMAC_TNS_BYPASS_MODE	2
 
 /* Registers */
-- 
1.7.1