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Date: Mon, 18 Jul 2016 07:15:20 -0400
From: Michael Chan <michael.chan@...adcom.com>
To: davem@...emloft.net
Cc: netdev@...r.kernel.org
Subject: [PATCH net-next 1/6] bnxt_en: Add basic support for Nitro in North Star 2.
From: Prashant Sreedharan <prashant.sreedharan@...adcom.com>
Nitro is the embedded version of the ethernet controller in the North
Star 2 SoC. Add basic code to recognize the chip ID and disable
the features (ntuple, TPA, ring and port statistics) not supported on
Nitro A0.
Signed-off-by: Prashant Sreedharan <prashant.sreedharan@...adcom.com>
Signed-off-by: Vasundhara Volam <vasundhara-v.volam@...adcom.com>
Signed-off-by: Michael Chan <michael.chan@...adcom.com>
---
drivers/net/ethernet/broadcom/bnxt/bnxt.c | 38 ++++++++++++++++++++-----------
drivers/net/ethernet/broadcom/bnxt/bnxt.h | 3 +++
2 files changed, 28 insertions(+), 13 deletions(-)
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
index 659faa6..4970e72 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
@@ -2661,7 +2661,7 @@ static int bnxt_alloc_stats(struct bnxt *bp)
cpr->hw_stats_ctx_id = INVALID_STATS_CTX_ID;
}
- if (BNXT_PF(bp)) {
+ if (BNXT_PF(bp) && bp->chip_num != CHIP_NUM_58700) {
bp->hw_port_stats_size = sizeof(struct rx_port_stats) +
sizeof(struct tx_port_stats) + 1024;
@@ -3922,6 +3922,9 @@ static int bnxt_hwrm_stat_ctx_free(struct bnxt *bp)
if (!bp->bnapi)
return 0;
+ if (BNXT_CHIP_TYPE_NITRO_A0(bp))
+ return 0;
+
bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_STAT_CTX_FREE, -1, -1);
mutex_lock(&bp->hwrm_cmd_lock);
@@ -3950,6 +3953,9 @@ static int bnxt_hwrm_stat_ctx_alloc(struct bnxt *bp)
struct hwrm_stat_ctx_alloc_input req = {0};
struct hwrm_stat_ctx_alloc_output *resp = bp->hwrm_cmd_resp_addr;
+ if (BNXT_CHIP_TYPE_NITRO_A0(bp))
+ return 0;
+
bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_STAT_CTX_ALLOC, -1, -1);
req.update_period_ms = cpu_to_le32(bp->stats_coal_ticks / 1000);
@@ -4163,6 +4169,9 @@ static int bnxt_hwrm_ver_get(struct bnxt *bp)
bp->hwrm_max_req_len = le16_to_cpu(resp->max_req_win_len);
bp->chip_num = le16_to_cpu(resp->chip_num);
+ if (bp->chip_num == CHIP_NUM_58700 && !resp->chip_rev &&
+ !resp->chip_metal)
+ bp->flags |= BNXT_FLAG_CHIP_NITRO_A0;
hwrm_ver_get_exit:
mutex_unlock(&bp->hwrm_cmd_lock);
@@ -5681,7 +5690,7 @@ static int bnxt_set_features(struct net_device *dev, netdev_features_t features)
bool update_tpa = false;
flags &= ~BNXT_FLAG_ALL_CONFIG_FEATS;
- if ((features & NETIF_F_GRO) && (bp->pdev->revision > 0))
+ if ((features & NETIF_F_GRO) && !BNXT_CHIP_TYPE_NITRO_A0(bp))
flags |= BNXT_FLAG_GRO;
if (features & NETIF_F_LRO)
flags |= BNXT_FLAG_LRO;
@@ -6576,13 +6585,25 @@ static int bnxt_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
pci_set_drvdata(pdev, dev);
+ rc = bnxt_alloc_hwrm_resources(bp);
+ if (rc)
+ goto init_err;
+
+ mutex_init(&bp->hwrm_cmd_lock);
+ rc = bnxt_hwrm_ver_get(bp);
+ if (rc)
+ goto init_err;
+
dev->hw_features = NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | NETIF_F_SG |
NETIF_F_TSO | NETIF_F_TSO6 |
NETIF_F_GSO_UDP_TUNNEL | NETIF_F_GSO_GRE |
NETIF_F_GSO_IPXIP4 |
NETIF_F_GSO_UDP_TUNNEL_CSUM | NETIF_F_GSO_GRE_CSUM |
NETIF_F_GSO_PARTIAL | NETIF_F_RXHASH |
- NETIF_F_RXCSUM | NETIF_F_LRO | NETIF_F_GRO;
+ NETIF_F_RXCSUM | NETIF_F_GRO;
+
+ if (!BNXT_CHIP_TYPE_NITRO_A0(bp))
+ dev->hw_features |= NETIF_F_LRO;
dev->hw_enc_features =
NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | NETIF_F_SG |
@@ -6601,15 +6622,6 @@ static int bnxt_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
#ifdef CONFIG_BNXT_SRIOV
init_waitqueue_head(&bp->sriov_cfg_wait);
#endif
- rc = bnxt_alloc_hwrm_resources(bp);
- if (rc)
- goto init_err;
-
- mutex_init(&bp->hwrm_cmd_lock);
- rc = bnxt_hwrm_ver_get(bp);
- if (rc)
- goto init_err;
-
bp->gro_func = bnxt_gro_func_5730x;
if (BNXT_CHIP_NUM_57X1X(bp->chip_num))
bp->gro_func = bnxt_gro_func_5731x;
@@ -6647,7 +6659,7 @@ static int bnxt_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
#endif
bnxt_set_dflt_rings(bp);
- if (BNXT_PF(bp)) {
+ if (BNXT_PF(bp) && !BNXT_CHIP_TYPE_NITRO_A0(bp)) {
dev->hw_features |= NETIF_F_NTUPLE;
if (bnxt_rfs_capable(bp)) {
bp->flags |= BNXT_FLAG_RFS;
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.h b/drivers/net/ethernet/broadcom/bnxt/bnxt.h
index 2313e37..e667150 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.h
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.h
@@ -893,6 +893,7 @@ struct bnxt {
#define CHIP_NUM_57301 0x16c8
#define CHIP_NUM_57302 0x16c9
#define CHIP_NUM_57304 0x16ca
+#define CHIP_NUM_58700 0x16cd
#define CHIP_NUM_57402 0x16d0
#define CHIP_NUM_57404 0x16d1
#define CHIP_NUM_57406 0x16d2
@@ -954,6 +955,7 @@ struct bnxt {
#define BNXT_FLAG_SHARED_RINGS 0x200
#define BNXT_FLAG_PORT_STATS 0x400
#define BNXT_FLAG_EEE_CAP 0x1000
+ #define BNXT_FLAG_CHIP_NITRO_A0 0x1000000
#define BNXT_FLAG_ALL_CONFIG_FEATS (BNXT_FLAG_TPA | \
BNXT_FLAG_RFS | \
@@ -963,6 +965,7 @@ struct bnxt {
#define BNXT_VF(bp) ((bp)->flags & BNXT_FLAG_VF)
#define BNXT_NPAR(bp) ((bp)->port_partition_type)
#define BNXT_SINGLE_PF(bp) (BNXT_PF(bp) && !BNXT_NPAR(bp))
+#define BNXT_CHIP_TYPE_NITRO_A0(bp) ((bp)->flags & BNXT_FLAG_CHIP_NITRO_A0)
struct bnxt_napi **bnapi;
--
1.8.3.1
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