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Subject[Patch v4 net-next 2/7] octeontx2-af: Add new CGX_CMD to get PHY FEC statistics
Date
From: Felix Manlunas <fmanlunas@marvell.com>

This patch adds support to fetch fec stats from PHY. The stats are
put in the shared data struct fwdata. A PHY driver indicates
that it has FEC stats by setting the flag fwdata.phy.misc.has_fec_stats

Besides CGX_CMD_GET_PHY_FEC_STATS, also add CGX_CMD_PRBS and
CGX_CMD_DISPLAY_EYE to enum cgx_cmd_id so that Linux's enum list is in sync
with firmware's enum list.

Signed-off-by: Felix Manlunas <fmanlunas@marvell.com>
Signed-off-by: Christina Jacob <cjacob@marvell.com>
Signed-off-by: Sunil Goutham <sgoutham@marvell.com>
Signed-off-by: Hariprasad Kelam <hkelam@marvell.com>
Reviewed-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
---
drivers/net/ethernet/marvell/octeontx2/af/cgx.c | 12 ++++++
drivers/net/ethernet/marvell/octeontx2/af/cgx.h | 1 +
.../net/ethernet/marvell/octeontx2/af/cgx_fw_if.h | 5 +++
drivers/net/ethernet/marvell/octeontx2/af/mbox.h | 43 ++++++++++++++++++++++
drivers/net/ethernet/marvell/octeontx2/af/rvu.h | 4 ++
.../net/ethernet/marvell/octeontx2/af/rvu_cgx.c | 32 ++++++++++++++++
6 files changed, 97 insertions(+)

diff --git a/drivers/net/ethernet/marvell/octeontx2/af/cgx.c b/drivers/net/ethernet/marvell/octeontx2/af/cgx.c
index fe5512d..b636341 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/cgx.c
+++ b/drivers/net/ethernet/marvell/octeontx2/af/cgx.c
@@ -861,6 +861,18 @@ int cgx_set_fec(u64 fec, int cgx_id, int lmac_id)
return cgx->lmac_idmap[lmac_id]->link_info.fec;
}

+int cgx_get_phy_fec_stats(void *cgxd, int lmac_id)
+{
+ struct cgx *cgx = cgxd;
+ u64 req = 0, resp;
+
+ if (!cgx)
+ return -ENODEV;
+
+ req = FIELD_SET(CMDREG_ID, CGX_CMD_GET_PHY_FEC_STATS, req);
+ return cgx_fwi_cmd_generic(req, &resp, cgx, lmac_id);
+}
+
static int cgx_fwi_link_change(struct cgx *cgx, int lmac_id, bool enable)
{
u64 req = 0;
diff --git a/drivers/net/ethernet/marvell/octeontx2/af/cgx.h b/drivers/net/ethernet/marvell/octeontx2/af/cgx.h
index 1824e95..c5294b7 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/cgx.h
+++ b/drivers/net/ethernet/marvell/octeontx2/af/cgx.h
@@ -154,5 +154,6 @@ void cgx_lmac_ptp_config(void *cgxd, int lmac_id, bool enable);
u8 cgx_lmac_get_p2x(int cgx_id, int lmac_id);
int cgx_set_fec(u64 fec, int cgx_id, int lmac_id);
int cgx_get_fec_stats(void *cgxd, int lmac_id, struct cgx_fec_stats_rsp *rsp);
+int cgx_get_phy_fec_stats(void *cgxd, int lmac_id);

#endif /* CGX_H */
diff --git a/drivers/net/ethernet/marvell/octeontx2/af/cgx_fw_if.h b/drivers/net/ethernet/marvell/octeontx2/af/cgx_fw_if.h
index 3485596..65f832a 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/cgx_fw_if.h
+++ b/drivers/net/ethernet/marvell/octeontx2/af/cgx_fw_if.h
@@ -89,6 +89,11 @@ enum cgx_cmd_id {
CGX_CMD_SET_AN,
CGX_CMD_GET_ADV_LINK_MODES,
CGX_CMD_GET_ADV_FEC,
+ CGX_CMD_GET_PHY_MOD_TYPE, /* line-side modulation type: NRZ or PAM4 */
+ CGX_CMD_SET_PHY_MOD_TYPE,
+ CGX_CMD_PRBS,
+ CGX_CMD_DISPLAY_EYE,
+ CGX_CMD_GET_PHY_FEC_STATS,
};

/* async event ids */
diff --git a/drivers/net/ethernet/marvell/octeontx2/af/mbox.h b/drivers/net/ethernet/marvell/octeontx2/af/mbox.h
index 0591621..b8b8cd3 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/mbox.h
+++ b/drivers/net/ethernet/marvell/octeontx2/af/mbox.h
@@ -151,6 +151,8 @@ M(CGX_CFG_PAUSE_FRM, 0x20E, cgx_cfg_pause_frm, cgx_pause_frm_cfg, \
cgx_pause_frm_cfg) \
M(CGX_FEC_SET, 0x210, cgx_set_fec_param, fec_mode, fec_mode) \
M(CGX_FEC_STATS, 0x211, cgx_fec_stats, msg_req, cgx_fec_stats_rsp) \
+M(CGX_GET_PHY_FEC_STATS, 0x212, cgx_get_phy_fec_stats, msg_req, msg_rsp) \
+M(CGX_FW_DATA_GET, 0x213, cgx_get_aux_link_info, msg_req, cgx_fw_data) \
/* NPA mbox IDs (range 0x400 - 0x5FF) */ \
/* NPA mbox IDs (range 0x400 - 0x5FF) */ \
M(NPA_LF_ALLOC, 0x400, npa_lf_alloc, \
@@ -413,6 +415,47 @@ struct fec_mode {
int fec;
};

+struct sfp_eeprom_s {
+#define SFP_EEPROM_SIZE 256
+ u16 sff_id;
+ u8 buf[SFP_EEPROM_SIZE];
+ u64 reserved;
+};
+
+struct phy_s {
+ struct {
+ u64 can_change_mod_type:1;
+ u64 mod_type:1;
+ u64 has_fec_stats:1;
+ } misc;
+ struct fec_stats_s {
+ u32 rsfec_corr_cws;
+ u32 rsfec_uncorr_cws;
+ u32 brfec_corr_blks;
+ u32 brfec_uncorr_blks;
+ } fec_stats;
+};
+
+struct cgx_lmac_fwdata_s {
+ u16 rw_valid;
+ u64 supported_fec;
+ u64 supported_an;
+ u64 supported_link_modes;
+ /* only applicable if AN is supported */
+ u64 advertised_fec;
+ u64 advertised_link_modes;
+ /* Only applicable if SFP/QSFP slot is present */
+ struct sfp_eeprom_s sfp_eeprom;
+ struct phy_s phy;
+#define LMAC_FWDATA_RESERVED_MEM 1021
+ u64 reserved[LMAC_FWDATA_RESERVED_MEM];
+};
+
+struct cgx_fw_data {
+ struct mbox_msghdr hdr;
+ struct cgx_lmac_fwdata_s fwdata;
+};
+
/* NPA mbox message formats */

/* NPA mailbox error codes
diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu.h b/drivers/net/ethernet/marvell/octeontx2/af/rvu.h
index b1a6ecf..49b493b 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/rvu.h
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu.h
@@ -350,6 +350,10 @@ struct rvu_fwdata {
u64 msixtr_base;
#define FWDATA_RESERVED_MEM 1023
u64 reserved[FWDATA_RESERVED_MEM];
+#define CGX_MAX 5
+#define CGX_LMACS_MAX 4
+ struct cgx_lmac_fwdata_s cgx_fw_data[CGX_MAX][CGX_LMACS_MAX];
+ /* Do not add new fields below this line */
};

struct ptp;
diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_cgx.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu_cgx.c
index 22b1a21..38ff973 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_cgx.c
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_cgx.c
@@ -692,6 +692,19 @@ int rvu_mbox_handler_cgx_cfg_pause_frm(struct rvu *rvu,
return 0;
}

+int rvu_mbox_handler_cgx_get_phy_fec_stats(struct rvu *rvu, struct msg_req *req,
+ struct msg_rsp *rsp)
+{
+ int pf = rvu_get_pf(req->hdr.pcifunc);
+ u8 cgx_id, lmac_id;
+
+ if (!is_pf_cgxmapped(rvu, pf))
+ return -EPERM;
+
+ rvu_get_cgx_lmac_id(rvu->pf2cgxlmac_map[pf], &cgx_id, &lmac_id);
+ return cgx_get_phy_fec_stats(rvu_cgx_pdata(cgx_id, rvu), lmac_id);
+}
+
/* Finds cumulative status of NIX rx/tx counters from LF of a PF and those
* from its VFs as well. ie. NIX rx/tx counters at the CGX port level
*/
@@ -800,3 +813,22 @@ int rvu_mbox_handler_cgx_set_fec_param(struct rvu *rvu,
rsp->fec = cgx_set_fec(req->fec, cgx_id, lmac_id);
return 0;
}
+
+int rvu_mbox_handler_cgx_get_aux_link_info(struct rvu *rvu, struct msg_req *req,
+ struct cgx_fw_data *rsp)
+{
+ int pf = rvu_get_pf(req->hdr.pcifunc);
+ u8 cgx_id, lmac_id;
+
+ if (!rvu->fwdata)
+ return -ENXIO;
+
+ if (!is_pf_cgxmapped(rvu, pf))
+ return -EPERM;
+
+ rvu_get_cgx_lmac_id(rvu->pf2cgxlmac_map[pf], &cgx_id, &lmac_id);
+
+ memcpy(&rsp->fwdata, &rvu->fwdata->cgx_fw_data[cgx_id][lmac_id],
+ sizeof(struct cgx_lmac_fwdata_s));
+ return 0;
+}
--
2.7.4
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