From 23999b30ae67a1baef78ed5b2c3edb6928fcb225 Mon Sep 17 00:00:00 2001 From: Geetha sowjanya Date: Tue, 16 Oct 2018 16:57:10 +0530 Subject: [PATCH] octeontx2-af: Enable or disable CGX internal loopback Add support to enable or disable internal loopback mode in CGX. New mbox IDs CGX_INTLBK_ENABLE/DISABLE added for this. Signed-off-by: Geetha sowjanya Signed-off-by: Linu Cherian Signed-off-by: Sunil Goutham Signed-off-by: David S. Miller --- .../net/ethernet/marvell/octeontx2/af/cgx.c | 30 ++++++++++++++++++ .../net/ethernet/marvell/octeontx2/af/cgx.h | 5 +++ .../net/ethernet/marvell/octeontx2/af/mbox.h | 2 ++ .../net/ethernet/marvell/octeontx2/af/rvu.h | 4 +++ .../ethernet/marvell/octeontx2/af/rvu_cgx.c | 31 +++++++++++++++++++ 5 files changed, 72 insertions(+) diff --git a/drivers/net/ethernet/marvell/octeontx2/af/cgx.c b/drivers/net/ethernet/marvell/octeontx2/af/cgx.c index 077f83f4f2f0..352501b54aee 100644 --- a/drivers/net/ethernet/marvell/octeontx2/af/cgx.c +++ b/drivers/net/ethernet/marvell/octeontx2/af/cgx.c @@ -194,6 +194,36 @@ static inline u8 cgx_get_lmac_type(struct cgx *cgx, int lmac_id) return (cfg >> CGX_LMAC_TYPE_SHIFT) & CGX_LMAC_TYPE_MASK; } +/* Configure CGX LMAC in internal loopback mode */ +int cgx_lmac_internal_loopback(void *cgxd, int lmac_id, bool enable) +{ + struct cgx *cgx = cgxd; + u8 lmac_type; + u64 cfg; + + if (!cgx || lmac_id >= cgx->lmac_count) + return -ENODEV; + + lmac_type = cgx_get_lmac_type(cgx, lmac_id); + if (lmac_type == LMAC_MODE_SGMII || lmac_type == LMAC_MODE_QSGMII) { + cfg = cgx_read(cgx, lmac_id, CGXX_GMP_PCS_MRX_CTL); + if (enable) + cfg |= CGXX_GMP_PCS_MRX_CTL_LBK; + else + cfg &= ~CGXX_GMP_PCS_MRX_CTL_LBK; + cgx_write(cgx, lmac_id, CGXX_GMP_PCS_MRX_CTL, cfg); + } else { + cfg = cgx_read(cgx, lmac_id, CGXX_SPUX_CONTROL1); + if (enable) + cfg |= CGXX_SPUX_CONTROL1_LBK; + else + cfg &= ~CGXX_SPUX_CONTROL1_LBK; + cgx_write(cgx, lmac_id, CGXX_SPUX_CONTROL1, cfg); + } + return 0; +} +EXPORT_SYMBOL(cgx_lmac_internal_loopback); + void cgx_lmac_promisc_config(int cgx_id, int lmac_id, bool enable) { struct cgx *cgx = cgx_get_pdata(cgx_id); diff --git a/drivers/net/ethernet/marvell/octeontx2/af/cgx.h b/drivers/net/ethernet/marvell/octeontx2/af/cgx.h index c89edfaacbe6..ada25ed0765b 100644 --- a/drivers/net/ethernet/marvell/octeontx2/af/cgx.h +++ b/drivers/net/ethernet/marvell/octeontx2/af/cgx.h @@ -50,6 +50,10 @@ #define CGXX_SCRATCH0_REG 0x1050 #define CGXX_SCRATCH1_REG 0x1058 #define CGX_CONST 0x2000 +#define CGXX_SPUX_CONTROL1 0x10000 +#define CGXX_SPUX_CONTROL1_LBK BIT_ULL(14) +#define CGXX_GMP_PCS_MRX_CTL 0x30000 +#define CGXX_GMP_PCS_MRX_CTL_LBK BIT_ULL(14) #define CGX_COMMAND_REG CGXX_SCRATCH1_REG #define CGX_EVENT_REG CGXX_SCRATCH0_REG @@ -100,6 +104,7 @@ int cgx_lmac_rx_tx_enable(void *cgxd, int lmac_id, bool enable); int cgx_lmac_addr_set(u8 cgx_id, u8 lmac_id, u8 *mac_addr); u64 cgx_lmac_addr_get(u8 cgx_id, u8 lmac_id); void cgx_lmac_promisc_config(int cgx_id, int lmac_id, bool enable); +int cgx_lmac_internal_loopback(void *cgxd, int lmac_id, bool enable); int cgx_get_link_info(void *cgxd, int lmac_id, struct cgx_link_user_info *linfo); #endif /* CGX_H */ diff --git a/drivers/net/ethernet/marvell/octeontx2/af/mbox.h b/drivers/net/ethernet/marvell/octeontx2/af/mbox.h index 9f3790b507a6..be1cb16c18e0 100644 --- a/drivers/net/ethernet/marvell/octeontx2/af/mbox.h +++ b/drivers/net/ethernet/marvell/octeontx2/af/mbox.h @@ -136,6 +136,8 @@ M(CGX_PROMISC_DISABLE, 0x206, msg_req, msg_rsp) \ M(CGX_START_LINKEVENTS, 0x207, msg_req, msg_rsp) \ M(CGX_STOP_LINKEVENTS, 0x208, msg_req, msg_rsp) \ M(CGX_GET_LINKINFO, 0x209, msg_req, cgx_link_info_msg) \ +M(CGX_INTLBK_ENABLE, 0x20A, msg_req, msg_rsp) \ +M(CGX_INTLBK_DISABLE, 0x20B, msg_req, msg_rsp) \ /* NPA mbox IDs (range 0x400 - 0x5FF) */ \ /* SSO/SSOW mbox IDs (range 0x600 - 0x7FF) */ \ /* TIM mbox IDs (range 0x800 - 0x9FF) */ \ diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu.h b/drivers/net/ethernet/marvell/octeontx2/af/rvu.h index 83478086ddb8..88454cb90bb4 100644 --- a/drivers/net/ethernet/marvell/octeontx2/af/rvu.h +++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu.h @@ -192,4 +192,8 @@ int rvu_mbox_handler_CGX_STOP_LINKEVENTS(struct rvu *rvu, struct msg_req *req, struct msg_rsp *rsp); int rvu_mbox_handler_CGX_GET_LINKINFO(struct rvu *rvu, struct msg_req *req, struct cgx_link_info_msg *rsp); +int rvu_mbox_handler_CGX_INTLBK_ENABLE(struct rvu *rvu, struct msg_req *req, + struct msg_rsp *rsp); +int rvu_mbox_handler_CGX_INTLBK_DISABLE(struct rvu *rvu, struct msg_req *req, + struct msg_rsp *rsp); #endif /* RVU_H */ diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_cgx.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu_cgx.c index e917f28b220c..e0aee2176637 100644 --- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_cgx.c +++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_cgx.c @@ -479,3 +479,34 @@ int rvu_mbox_handler_CGX_GET_LINKINFO(struct rvu *rvu, struct msg_req *req, &rsp->link_info); return err; } + +static int rvu_cgx_config_intlbk(struct rvu *rvu, u16 pcifunc, bool en) +{ + int pf = rvu_get_pf(pcifunc); + u8 cgx_id, lmac_id; + + /* This msg is expected only from PFs that are mapped to CGX LMACs, + * if received from other PF/VF simply ACK, nothing to do. + */ + if ((pcifunc & RVU_PFVF_FUNC_MASK) || !is_pf_cgxmapped(rvu, pf)) + return -ENODEV; + + rvu_get_cgx_lmac_id(rvu->pf2cgxlmac_map[pf], &cgx_id, &lmac_id); + + return cgx_lmac_internal_loopback(rvu_cgx_pdata(cgx_id, rvu), + lmac_id, en); +} + +int rvu_mbox_handler_CGX_INTLBK_ENABLE(struct rvu *rvu, struct msg_req *req, + struct msg_rsp *rsp) +{ + rvu_cgx_config_intlbk(rvu, req->hdr.pcifunc, true); + return 0; +} + +int rvu_mbox_handler_CGX_INTLBK_DISABLE(struct rvu *rvu, struct msg_req *req, + struct msg_rsp *rsp) +{ + rvu_cgx_config_intlbk(rvu, req->hdr.pcifunc, false); + return 0; +} -- 2.30.2