[dpdk-dev] [PATCH v2 03/32] common/cnxk: support for getting link information

[Tomasz Duszynski <tduszynski@marvell.com>]

Add support for retrieving link information.

Signed-off-by: Tomasz Duszynski <tduszynski@marvell.com>
Signed-off-by: Jakub Palider <jpalider@marvell.com>
---
 drivers/common/cnxk/roc_bphy_cgx.c      | 40 +++++++++++++-
 drivers/common/cnxk/roc_bphy_cgx.h      | 70 +++++++++++++++++++++++++
 drivers/common/cnxk/roc_bphy_cgx_priv.h |  9 ++++
 drivers/common/cnxk/version.map         |  1 +
 4 files changed, 119 insertions(+), 1 deletion(-)

diff --git a/drivers/common/cnxk/roc_bphy_cgx.c b/drivers/common/cnxk/roc_bphy_cgx.c
index 8549145a1..6279345c9 100644
--- a/drivers/common/cnxk/roc_bphy_cgx.c
+++ b/drivers/common/cnxk/roc_bphy_cgx.c
@@ -105,7 +105,7 @@ roc_bphy_cgx_wait_for_ack(struct roc_bphy_cgx *roc_cgx, unsigned int lmac,
 	return tries ? 0 : -ETIMEDOUT;
 }
 
-static int __rte_unused
+static int
 roc_bphy_cgx_intf_req(struct roc_bphy_cgx *roc_cgx, unsigned int lmac,
 		      uint64_t scr1, uint64_t *scr0)
 {
@@ -205,3 +205,41 @@ roc_bphy_cgx_dev_fini(struct roc_bphy_cgx *roc_cgx)
 
 	return 0;
 }
+
+static bool
+roc_bphy_cgx_lmac_exists(struct roc_bphy_cgx *roc_cgx, unsigned int lmac)
+{
+	return (lmac < MAX_LMACS_PER_CGX) &&
+	       (roc_cgx->lmac_bmap & BIT_ULL(lmac));
+}
+
+int
+roc_bphy_cgx_get_linkinfo(struct roc_bphy_cgx *roc_cgx, unsigned int lmac,
+			  struct roc_bphy_cgx_link_info *info)
+{
+	uint64_t scr1, scr0;
+	int ret;
+
+	if (!roc_cgx)
+		return -EINVAL;
+
+	if (!roc_bphy_cgx_lmac_exists(roc_cgx, lmac))
+		return -ENODEV;
+
+	if (!info)
+		return -EINVAL;
+
+	scr1 = FIELD_PREP(SCR1_ETH_CMD_ID, ETH_CMD_GET_LINK_STS);
+	ret = roc_bphy_cgx_intf_req(roc_cgx, lmac, scr1, &scr0);
+	if (ret)
+		return ret;
+
+	info->link_up = FIELD_GET(SCR0_ETH_LNK_STS_S_LINK_UP, scr0);
+	info->full_duplex = FIELD_GET(SCR0_ETH_LNK_STS_S_FULL_DUPLEX, scr0);
+	info->speed = FIELD_GET(SCR0_ETH_LNK_STS_S_SPEED, scr0);
+	info->an = FIELD_GET(SCR0_ETH_LNK_STS_S_AN, scr0);
+	info->fec = FIELD_GET(SCR0_ETH_LNK_STS_S_FEC, scr0);
+	info->mode = FIELD_GET(SCR0_ETH_LNK_STS_S_MODE, scr0);
+
+	return 0;
+}
diff --git a/drivers/common/cnxk/roc_bphy_cgx.h b/drivers/common/cnxk/roc_bphy_cgx.h
index 37b5c2742..641650d66 100644
--- a/drivers/common/cnxk/roc_bphy_cgx.h
+++ b/drivers/common/cnxk/roc_bphy_cgx.h
@@ -9,6 +9,8 @@
 
 #include "roc_api.h"
 
+#define MAX_LMACS_PER_CGX 4
+
 struct roc_bphy_cgx {
 	uint64_t bar0_pa;
 	void *bar0_va;
@@ -18,7 +20,75 @@ struct roc_bphy_cgx {
 	pthread_mutex_t lock;
 } __plt_cache_aligned;
 
+enum roc_bphy_cgx_eth_link_speed {
+	ROC_BPHY_CGX_ETH_LINK_SPEED_NONE,
+	ROC_BPHY_CGX_ETH_LINK_SPEED_10M,
+	ROC_BPHY_CGX_ETH_LINK_SPEED_100M,
+	ROC_BPHY_CGX_ETH_LINK_SPEED_1G,
+	ROC_BPHY_CGX_ETH_LINK_SPEED_2HG,
+	ROC_BPHY_CGX_ETH_LINK_SPEED_5G,
+	ROC_BPHY_CGX_ETH_LINK_SPEED_10G,
+	ROC_BPHY_CGX_ETH_LINK_SPEED_20G,
+	ROC_BPHY_CGX_ETH_LINK_SPEED_25G,
+	ROC_BPHY_CGX_ETH_LINK_SPEED_40G,
+	ROC_BPHY_CGX_ETH_LINK_SPEED_50G,
+	ROC_BPHY_CGX_ETH_LINK_SPEED_80G,
+	ROC_BPHY_CGX_ETH_LINK_SPEED_100G,
+	__ROC_BPHY_CGX_ETH_LINK_SPEED_MAX
+};
+
+enum roc_bphy_cgx_eth_link_fec {
+	ROC_BPHY_CGX_ETH_LINK_FEC_NONE,
+	ROC_BPHY_CGX_ETH_LINK_FEC_BASE_R,
+	ROC_BPHY_CGX_ETH_LINK_FEC_RS,
+	__ROC_BPHY_CGX_ETH_LINK_FEC_MAX
+};
+
+enum roc_bphy_cgx_eth_link_mode {
+	ROC_BPHY_CGX_ETH_LINK_MODE_SGMII_BIT,
+	ROC_BPHY_CGX_ETH_LINK_MODE_1000_BASEX_BIT,
+	ROC_BPHY_CGX_ETH_LINK_MODE_QSGMII_BIT,
+	ROC_BPHY_CGX_ETH_LINK_MODE_10G_C2C_BIT,
+	ROC_BPHY_CGX_ETH_LINK_MODE_10G_C2M_BIT,
+	ROC_BPHY_CGX_ETH_LINK_MODE_10G_KR_BIT,
+	ROC_BPHY_CGX_ETH_LINK_MODE_20G_C2C_BIT,
+	ROC_BPHY_CGX_ETH_LINK_MODE_25G_C2C_BIT,
+	ROC_BPHY_CGX_ETH_LINK_MODE_25G_C2M_BIT,
+	ROC_BPHY_CGX_ETH_LINK_MODE_25G_2_C2C_BIT,
+	ROC_BPHY_CGX_ETH_LINK_MODE_25G_CR_BIT,
+	ROC_BPHY_CGX_ETH_LINK_MODE_25G_KR_BIT,
+	ROC_BPHY_CGX_ETH_LINK_MODE_40G_C2C_BIT,
+	ROC_BPHY_CGX_ETH_LINK_MODE_40G_C2M_BIT,
+	ROC_BPHY_CGX_ETH_LINK_MODE_40G_CR4_BIT,
+	ROC_BPHY_CGX_ETH_LINK_MODE_40G_KR4_BIT,
+	ROC_BPHY_CGX_ETH_LINK_MODE_40GAUI_C2C_BIT,
+	ROC_BPHY_CGX_ETH_LINK_MODE_50G_C2C_BIT,
+	ROC_BPHY_CGX_ETH_LINK_MODE_50G_C2M_BIT,
+	ROC_BPHY_CGX_ETH_LINK_MODE_50G_4_C2C_BIT,
+	ROC_BPHY_CGX_ETH_LINK_MODE_50G_CR_BIT,
+	ROC_BPHY_CGX_ETH_LINK_MODE_50G_KR_BIT,
+	ROC_BPHY_CGX_ETH_LINK_MODE_80GAUI_C2C_BIT,
+	ROC_BPHY_CGX_ETH_LINK_MODE_100G_C2C_BIT,
+	ROC_BPHY_CGX_ETH_LINK_MODE_100G_C2M_BIT,
+	ROC_BPHY_CGX_ETH_LINK_MODE_100G_CR4_BIT,
+	ROC_BPHY_CGX_ETH_LINK_MODE_100G_KR4_BIT,
+	__ROC_BPHY_CGX_ETH_LINK_MODE_MAX
+};
+
+struct roc_bphy_cgx_link_info {
+	bool link_up;
+	bool full_duplex;
+	enum roc_bphy_cgx_eth_link_speed speed;
+	bool an;
+	enum roc_bphy_cgx_eth_link_fec fec;
+	enum roc_bphy_cgx_eth_link_mode mode;
+};
+
 __roc_api int roc_bphy_cgx_dev_init(struct roc_bphy_cgx *roc_cgx);
 __roc_api int roc_bphy_cgx_dev_fini(struct roc_bphy_cgx *roc_cgx);
 
+__roc_api int roc_bphy_cgx_get_linkinfo(struct roc_bphy_cgx *roc_cgx,
+					unsigned int lmac,
+					struct roc_bphy_cgx_link_info *info);
+
 #endif /* _ROC_BPHY_CGX_H_ */
diff --git a/drivers/common/cnxk/roc_bphy_cgx_priv.h b/drivers/common/cnxk/roc_bphy_cgx_priv.h
index 42d0bce7a..c0550ae87 100644
--- a/drivers/common/cnxk/roc_bphy_cgx_priv.h
+++ b/drivers/common/cnxk/roc_bphy_cgx_priv.h
@@ -7,6 +7,7 @@
 
 /* REQUEST ID types. Input to firmware */
 enum eth_cmd_id {
+	ETH_CMD_GET_LINK_STS = 4,
 	ETH_CMD_INTF_SHUTDOWN = 12,
 };
 
@@ -41,6 +42,14 @@ enum eth_cmd_own {
 
 /* struct eth_lnk_sts_s */
 #define SCR0_ETH_LNK_STS_S_ERR_TYPE    GENMASK_ULL(24, 15)
+#define SCR0_ETH_LNK_STS_S_LINK_UP     BIT_ULL(9)
+#define SCR0_ETH_LNK_STS_S_FULL_DUPLEX BIT_ULL(10)
+#define SCR0_ETH_LNK_STS_S_SPEED       GENMASK_ULL(14, 11)
+#define SCR0_ETH_LNK_STS_S_ERR_TYPE    GENMASK_ULL(24, 15)
+#define SCR0_ETH_LNK_STS_S_AN	       BIT_ULL(25)
+#define SCR0_ETH_LNK_STS_S_FEC	       GENMASK_ULL(27, 26)
+#define SCR0_ETH_LNK_STS_S_LMAC_TYPE   GENMASK_ULL(35, 28)
+#define SCR0_ETH_LNK_STS_S_MODE	       GENMASK_ULL(43, 36)
 
 /* scratchx(1) CSR used for non-secure SW->ATF communication
  * This CSR acts as a command register
diff --git a/drivers/common/cnxk/version.map b/drivers/common/cnxk/version.map
index 1db4d104a..466207f9d 100644
--- a/drivers/common/cnxk/version.map
+++ b/drivers/common/cnxk/version.map
@@ -11,6 +11,7 @@ INTERNAL {
 	cnxk_logtype_tm;
 	roc_bphy_cgx_dev_fini;
 	roc_bphy_cgx_dev_init;
+	roc_bphy_cgx_get_linkinfo;
 	roc_clk_freq_get;
 	roc_error_msg_get;
 	roc_idev_lmt_base_addr_get;
-- 
2.25.1