[net-next,v4,12/14] octeontx2-af: cn10k: Add RPM LMAC pause frame support

Message ID	20210205225013.15961-13-gakula@marvell.com
State	Superseded
Headers	show Return-Path: <netdev-owner@kernel.org> From: Geetha sowjanya <gakula@marvell.com> To: <netdev@vger.kernel.org>, <linux-kernel@vger.kernel.org>, <linux-crypto@vger.kernel.org> CC: <sgoutham@marvell.com>, <davem@davemloft.net>, <kuba@kernel.org>, <sbhatta@marvell.com>, <hkelam@marvell.com>, <jerinj@marvell.com>, <lcherian@marvell.com>, <bbrezillon@kernel.org>, <arno@natisbad.org>, <schalla@marvell.com>, Rakesh Babu <rsaladi2@marvell.com>, Geetha sowjanya <gakula@marvell.com>, Sunil Kovvuri Goutham <Sunil.Goutham@cavium.com> Subject: [net-next v4 12/14] octeontx2-af: cn10k: Add RPM LMAC pause frame support Date: Sat, 6 Feb 2021 04:20:11 +0530 Message-ID: <20210205225013.15961-13-gakula@marvell.com> In-Reply-To: <20210205225013.15961-1-gakula@marvell.com> References: <20210205225013.15961-1-gakula@marvell.com> MIME-Version: 1.0 Content-Type: text/plain Precedence: bulk
Series	Add Marvell CN10K support \| expand [net-next,v4,00/14] Add Marvell CN10K support [net-next,v4,01/14] octeontx2-af: cn10k: Add mbox support for CN10K platform [net-next,v4,02/14] octeontx2-pf: cn10k: Add mbox support for CN10K [net-next,v4,03/14] octeontx2-af: cn10k: Update NIX/NPA context structure [net-next,v4,04/14] octeontx2-af: cn10k: Update NIX and NPA context in debugfs [net-next,v4,05/14] octeontx2-pf: cn10k: Initialise NIX context [net-next,v4,06/14] octeontx2-pf: cn10k: Map LMTST region [net-next,v4,07/14] octeontx2-pf: cn10k: Use LMTST lines for NPA/NIX [net-next,v4,08/14] octeontx2-af: cn10k: Add RPM MAC support [net-next,v4,09/14] octeontx2-af: cn10k: Add support for programmable channels [net-next,v4,10/14] octeontx2-af: cn10K: Add MTU configuration [net-next,v4,11/14] octeontx2-pf: cn10k: Get max mtu supported from admin function [net-next,v4,12/14] octeontx2-af: cn10k: Add RPM LMAC pause frame support [net-next,v4,13/14] octeontx2-af: cn10k: Add RPM Rx/Tx stats support [net-next,v4,14/14] octeontx2-af: cn10k: MAC internal loopback support

diff --git a/drivers/net/ethernet/marvell/octeontx2/af/cgx.c b/drivers/net/ethernet/marvell/octeontx2/af/cgx.c index be039a8..9a343fd 100644 --- a/drivers/net/ethernet/marvell/octeontx2/af/cgx.c +++ b/drivers/net/ethernet/marvell/octeontx2/af/cgx.c @@ -306,9 +306,6 @@ void cgx_lmac_enadis_rx_pause_fwding(void *cgxd, int lmac_id, bool enable) struct cgx *cgx = cgxd; u64 cfg; - if (is_dev_rpm(cgx)) - return; - if (!cgx) return; @@ -397,8 +394,8 @@ int cgx_lmac_tx_enable(void *cgxd, int lmac_id, bool enable) return !!(last & DATA_PKT_TX_EN); } -int cgx_lmac_get_pause_frm(void *cgxd, int lmac_id, - u8 *tx_pause, u8 *rx_pause) +static int cgx_lmac_get_pause_frm_status(void *cgxd, int lmac_id, + u8 *tx_pause, u8 *rx_pause) { struct cgx *cgx = cgxd; u64 cfg; @@ -417,8 +414,8 @@ int cgx_lmac_get_pause_frm(void *cgxd, int lmac_id, return 0; } -int cgx_lmac_set_pause_frm(void *cgxd, int lmac_id, - u8 tx_pause, u8 rx_pause) +static int cgx_lmac_enadis_pause_frm(void *cgxd, int lmac_id, + u8 tx_pause, u8 rx_pause) { struct cgx *cgx = cgxd; u64 cfg; @@ -450,13 +447,11 @@ int cgx_lmac_set_pause_frm(void *cgxd, int lmac_id, return 0; } -static void cgx_lmac_pause_frm_config(struct cgx *cgx, int lmac_id, bool enable) +static void cgx_lmac_pause_frm_config(void *cgxd, int lmac_id, bool enable) { + struct cgx *cgx = cgxd; u64 cfg; - if (is_dev_rpm(cgx)) - return; - if (!is_lmac_valid(cgx, lmac_id)) return; if (enable) { @@ -996,7 +991,7 @@ static int cgx_lmac_init(struct cgx *cgx) /* Add reference */ cgx->lmac_idmap[lmac->lmac_id] = lmac; - cgx_lmac_pause_frm_config(cgx, lmac->lmac_id, true); + cgx->mac_ops->mac_pause_frm_config(cgx, lmac->lmac_id, true); set_bit(lmac->lmac_id, &cgx->lmac_bmap); } @@ -1025,7 +1020,7 @@ static int cgx_lmac_exit(struct cgx *cgx) lmac = cgx->lmac_idmap[i]; if (!lmac) continue; - cgx_lmac_pause_frm_config(cgx, lmac->lmac_id, false); + cgx->mac_ops->mac_pause_frm_config(cgx, lmac->lmac_id, false); cgx_configure_interrupt(cgx, lmac, lmac->lmac_id, true); kfree(lmac->name); kfree(lmac); @@ -1037,7 +1032,7 @@ static int cgx_lmac_exit(struct cgx *cgx) static void cgx_populate_features(struct cgx *cgx) { if (is_dev_rpm(cgx)) - cgx->hw_features = RVU_MAC_RPM; + cgx->hw_features = (RVU_MAC_RPM | RVU_LMAC_FEAT_FC); else cgx->hw_features = (RVU_LMAC_FEAT_FC | RVU_LMAC_FEAT_PTP); } @@ -1053,6 +1048,10 @@ struct mac_ops cgx_mac_ops = { .lmac_fwi = CGX_LMAC_FWI, .non_contiguous_serdes_lane = false, .get_nr_lmacs = cgx_get_nr_lmacs, + .mac_enadis_rx_pause_fwding = cgx_lmac_enadis_rx_pause_fwding, + .mac_get_pause_frm_status = cgx_lmac_get_pause_frm_status, + .mac_enadis_pause_frm = cgx_lmac_enadis_pause_frm, + .mac_pause_frm_config = cgx_lmac_pause_frm_config, }; static int cgx_probe(struct pci_dev *pdev, const struct pci_device_id *id) diff --git a/drivers/net/ethernet/marvell/octeontx2/af/lmac_common.h b/drivers/net/ethernet/marvell/octeontx2/af/lmac_common.h index 9c5a9c5..b4eb337 100644 --- a/drivers/net/ethernet/marvell/octeontx2/af/lmac_common.h +++ b/drivers/net/ethernet/marvell/octeontx2/af/lmac_common.h @@ -67,6 +67,24 @@ struct mac_ops { * number of setbits in lmac_exist tells number of lmacs */ int (*get_nr_lmacs)(void *cgx); + + /* Enable LMAC Pause Frame Configuration */ + void (*mac_enadis_rx_pause_fwding)(void *cgxd, + int lmac_id, + bool enable); + int (*mac_get_pause_frm_status)(void *cgxd, + int lmac_id, + u8 *tx_pause, + u8 *rx_pause); + + int (*mac_enadis_pause_frm)(void *cgxd, + int lmac_id, + u8 tx_pause, + u8 rx_pause); + void (*mac_pause_frm_config)(void *cgxd, + int lmac_id, + bool enable); + }; struct cgx { diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rpm.c b/drivers/net/ethernet/marvell/octeontx2/af/rpm.c index e97baee..8a4241a 100644 --- a/drivers/net/ethernet/marvell/octeontx2/af/rpm.c +++ b/drivers/net/ethernet/marvell/octeontx2/af/rpm.c @@ -19,6 +19,10 @@ static struct mac_ops rpm_mac_ops = { .lmac_fwi = RPM_LMAC_FWI, .non_contiguous_serdes_lane = true, .get_nr_lmacs = rpm_get_nr_lmacs, + .mac_enadis_rx_pause_fwding = rpm_lmac_enadis_rx_pause_fwding, + .mac_get_pause_frm_status = rpm_lmac_get_pause_frm_status, + .mac_enadis_pause_frm = rpm_lmac_enadis_pause_frm, + .mac_pause_frm_config = rpm_lmac_pause_frm_config, }; struct mac_ops *rpm_get_mac_ops(void) @@ -26,6 +30,11 @@ struct mac_ops *rpm_get_mac_ops(void) return &rpm_mac_ops; } +static void rpm_write(rpm_t *rpm, u64 lmac, u64 offset, u64 val) +{ + cgx_write(rpm, lmac, offset, val); +} + static u64 rpm_read(rpm_t *rpm, u64 lmac, u64 offset) { return cgx_read(rpm, lmac, offset); @@ -37,3 +46,128 @@ int rpm_get_nr_lmacs(void *rpmd) return hweight8(rpm_read(rpm, 0, CGXX_CMRX_RX_LMACS) & 0xFULL); } + +void rpm_lmac_enadis_rx_pause_fwding(void *rpmd, int lmac_id, bool enable) +{ + struct cgx *rpm = rpmd; + u64 cfg; + + if (!rpm) + return; + + if (enable) { + cfg = rpm_read(rpm, lmac_id, RPMX_MTI_MAC100X_COMMAND_CONFIG); + cfg &= ~RPMX_MTI_MAC100X_COMMAND_CONFIG_PAUSE_IGNORE; + rpm_write(rpm, lmac_id, RPMX_MTI_MAC100X_COMMAND_CONFIG, cfg); + } else { + cfg = rpm_read(rpm, lmac_id, RPMX_MTI_MAC100X_COMMAND_CONFIG); + cfg |= RPMX_MTI_MAC100X_COMMAND_CONFIG_PAUSE_IGNORE; + rpm_write(rpm, lmac_id, RPMX_MTI_MAC100X_COMMAND_CONFIG, cfg); + } +} + +int rpm_lmac_get_pause_frm_status(void *rpmd, int lmac_id, + u8 *tx_pause, u8 *rx_pause) +{ + rpm_t *rpm = rpmd; + u64 cfg; + + if (!is_lmac_valid(rpm, lmac_id)) + return -ENODEV; + + cfg = rpm_read(rpm, lmac_id, RPMX_MTI_MAC100X_COMMAND_CONFIG); + *rx_pause = !(cfg & RPMX_MTI_MAC100X_COMMAND_CONFIG_RX_P_DISABLE); + + cfg = rpm_read(rpm, lmac_id, RPMX_MTI_MAC100X_COMMAND_CONFIG); + *tx_pause = !(cfg & RPMX_MTI_MAC100X_COMMAND_CONFIG_TX_P_DISABLE); + return 0; +} + +int rpm_lmac_enadis_pause_frm(void *rpmd, int lmac_id, u8 tx_pause, + u8 rx_pause) +{ + rpm_t *rpm = rpmd; + u64 cfg; + + if (!is_lmac_valid(rpm, lmac_id)) + return -ENODEV; + + cfg = rpm_read(rpm, lmac_id, RPMX_MTI_MAC100X_COMMAND_CONFIG); + cfg &= ~RPMX_MTI_MAC100X_COMMAND_CONFIG_RX_P_DISABLE; + cfg |= rx_pause ? 0x0 : RPMX_MTI_MAC100X_COMMAND_CONFIG_RX_P_DISABLE; + cfg &= ~RPMX_MTI_MAC100X_COMMAND_CONFIG_PAUSE_IGNORE; + cfg |= rx_pause ? 0x0 : RPMX_MTI_MAC100X_COMMAND_CONFIG_PAUSE_IGNORE; + rpm_write(rpm, lmac_id, RPMX_MTI_MAC100X_COMMAND_CONFIG, cfg); + + cfg = rpm_read(rpm, lmac_id, RPMX_MTI_MAC100X_COMMAND_CONFIG); + cfg &= ~RPMX_MTI_MAC100X_COMMAND_CONFIG_TX_P_DISABLE; + cfg |= tx_pause ? 0x0 : RPMX_MTI_MAC100X_COMMAND_CONFIG_TX_P_DISABLE; + rpm_write(rpm, lmac_id, RPMX_MTI_MAC100X_COMMAND_CONFIG, cfg); + + cfg = rpm_read(rpm, 0, RPMX_CMR_RX_OVR_BP); + if (tx_pause) { + cfg &= ~RPMX_CMR_RX_OVR_BP_EN(lmac_id); + } else { + cfg |= RPMX_CMR_RX_OVR_BP_EN(lmac_id); + cfg &= ~RPMX_CMR_RX_OVR_BP_BP(lmac_id); + } + rpm_write(rpm, 0, RPMX_CMR_RX_OVR_BP, cfg); + return 0; +} + +void rpm_lmac_pause_frm_config(void *rpmd, int lmac_id, bool enable) +{ + rpm_t *rpm = rpmd; + u64 cfg; + + if (enable) { + /* Enable 802.3 pause frame mode */ + cfg = rpm_read(rpm, lmac_id, RPMX_MTI_MAC100X_COMMAND_CONFIG); + cfg &= ~RPMX_MTI_MAC100X_COMMAND_CONFIG_PFC_MODE; + rpm_write(rpm, lmac_id, RPMX_MTI_MAC100X_COMMAND_CONFIG, cfg); + + /* Enable receive pause frames */ + cfg = rpm_read(rpm, lmac_id, RPMX_MTI_MAC100X_COMMAND_CONFIG); + cfg &= ~RPMX_MTI_MAC100X_COMMAND_CONFIG_RX_P_DISABLE; + rpm_write(rpm, lmac_id, RPMX_MTI_MAC100X_COMMAND_CONFIG, cfg); + + /* Enable forward pause to TX block */ + cfg = rpm_read(rpm, lmac_id, RPMX_MTI_MAC100X_COMMAND_CONFIG); + cfg &= ~RPMX_MTI_MAC100X_COMMAND_CONFIG_PAUSE_IGNORE; + rpm_write(rpm, lmac_id, RPMX_MTI_MAC100X_COMMAND_CONFIG, cfg); + + /* Enable pause frames transmission */ + cfg = rpm_read(rpm, lmac_id, RPMX_MTI_MAC100X_COMMAND_CONFIG); + cfg &= ~RPMX_MTI_MAC100X_COMMAND_CONFIG_TX_P_DISABLE; + rpm_write(rpm, lmac_id, RPMX_MTI_MAC100X_COMMAND_CONFIG, cfg); + + /* Set pause time and interval */ + cfg = rpm_read(rpm, lmac_id, + RPMX_MTI_MAC100X_CL01_PAUSE_QUANTA); + cfg &= ~0xFFFFULL; + rpm_write(rpm, lmac_id, RPMX_MTI_MAC100X_CL01_PAUSE_QUANTA, + cfg | RPM_DEFAULT_PAUSE_TIME); + /* Set pause interval as the hardware default is too short */ + cfg = rpm_read(rpm, lmac_id, + RPMX_MTI_MAC100X_CL01_QUANTA_THRESH); + cfg &= ~0xFFFFULL; + rpm_write(rpm, lmac_id, RPMX_MTI_MAC100X_CL01_QUANTA_THRESH, + cfg | (RPM_DEFAULT_PAUSE_TIME / 2)); + + } else { + /* ALL pause frames received are completely ignored */ + cfg = rpm_read(rpm, lmac_id, RPMX_MTI_MAC100X_COMMAND_CONFIG); + cfg |= RPMX_MTI_MAC100X_COMMAND_CONFIG_RX_P_DISABLE; + rpm_write(rpm, lmac_id, RPMX_MTI_MAC100X_COMMAND_CONFIG, cfg); + + /* Disable forward pause to TX block */ + cfg = rpm_read(rpm, lmac_id, RPMX_MTI_MAC100X_COMMAND_CONFIG); + cfg |= RPMX_MTI_MAC100X_COMMAND_CONFIG_PAUSE_IGNORE; + rpm_write(rpm, lmac_id, RPMX_MTI_MAC100X_COMMAND_CONFIG, cfg); + + /* Disable pause frames transmission */ + cfg = rpm_read(rpm, lmac_id, RPMX_MTI_MAC100X_COMMAND_CONFIG); + cfg |= RPMX_MTI_MAC100X_COMMAND_CONFIG_TX_P_DISABLE; + rpm_write(rpm, lmac_id, RPMX_MTI_MAC100X_COMMAND_CONFIG, cfg); + } +} diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rpm.h b/drivers/net/ethernet/marvell/octeontx2/af/rpm.h index 1779e8b..0e8b456 100644 --- a/drivers/net/ethernet/marvell/octeontx2/af/rpm.h +++ b/drivers/net/ethernet/marvell/octeontx2/af/rpm.h @@ -21,9 +21,25 @@ #define RPMX_CMRX_LINK_RANGE_MASK GENMASK_ULL(19, 16) #define RPMX_CMRX_LINK_BASE_MASK GENMASK_ULL(11, 0) - +#define RPMX_MTI_MAC100X_COMMAND_CONFIG 0x8010 +#define RPMX_MTI_MAC100X_COMMAND_CONFIG_RX_P_DISABLE BIT_ULL(29) +#define RPMX_MTI_MAC100X_COMMAND_CONFIG_TX_P_DISABLE BIT_ULL(28) +#define RPMX_MTI_MAC100X_COMMAND_CONFIG_PAUSE_IGNORE BIT_ULL(8) +#define RPMX_MTI_MAC100X_COMMAND_CONFIG_PFC_MODE BIT_ULL(19) +#define RPMX_MTI_MAC100X_CL01_PAUSE_QUANTA 0x80A8 +#define RPMX_MTI_MAC100X_CL01_QUANTA_THRESH 0x80C8 +#define RPM_DEFAULT_PAUSE_TIME 0xFFFF +#define RPMX_CMR_RX_OVR_BP 0x4120 +#define RPMX_CMR_RX_OVR_BP_EN(x) BIT_ULL((x) + 8) +#define RPMX_CMR_RX_OVR_BP_BP(x) BIT_ULL((x) + 4) #define RPM_LMAC_FWI 0xa /* Function Declarations */ +void rpm_lmac_enadis_rx_pause_fwding(void *rpmd, int lmac_id, bool enable); +int rpm_lmac_get_pause_frm_status(void *cgxd, int lmac_id, u8 *tx_pause, + u8 *rx_pause); +void rpm_lmac_pause_frm_config(void *rpmd, int lmac_id, bool enable); +int rpm_lmac_enadis_pause_frm(void *rpmd, int lmac_id, u8 tx_pause, + u8 rx_pause); int rpm_get_nr_lmacs(void *cgxd); #endif /* RPM_H */ diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_cgx.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu_cgx.c index 5e514f2..1c980c8 100644 --- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_cgx.c +++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_cgx.c @@ -406,6 +406,7 @@ static bool is_cgx_config_permitted(struct rvu *rvu, u16 pcifunc) void rvu_cgx_enadis_rx_bp(struct rvu *rvu, int pf, bool enable) { + struct mac_ops *mac_ops; u8 cgx_id, lmac_id; void *cgxd; @@ -415,11 +416,12 @@ void rvu_cgx_enadis_rx_bp(struct rvu *rvu, int pf, bool enable) rvu_get_cgx_lmac_id(rvu->pf2cgxlmac_map[pf], &cgx_id, &lmac_id); cgxd = rvu_cgx_pdata(cgx_id, rvu); + mac_ops = get_mac_ops(cgxd); /* Set / clear CTL_BCK to control pause frame forwarding to NIX */ if (enable) - cgx_lmac_enadis_rx_pause_fwding(cgxd, lmac_id, true); + mac_ops->mac_enadis_rx_pause_fwding(cgxd, lmac_id, true); else - cgx_lmac_enadis_rx_pause_fwding(cgxd, lmac_id, false); + mac_ops->mac_enadis_rx_pause_fwding(cgxd, lmac_id, false); } int rvu_cgx_config_rxtx(struct rvu *rvu, u16 pcifunc, bool start) @@ -715,7 +717,9 @@ int rvu_mbox_handler_cgx_cfg_pause_frm(struct rvu *rvu, struct cgx_pause_frm_cfg *rsp) { int pf = rvu_get_pf(req->hdr.pcifunc); + struct mac_ops *mac_ops; u8 cgx_id, lmac_id; + void *cgxd; if (!is_mac_feature_supported(rvu, pf, RVU_LMAC_FEAT_FC)) return 0; @@ -727,13 +731,16 @@ int rvu_mbox_handler_cgx_cfg_pause_frm(struct rvu *rvu, return -ENODEV; rvu_get_cgx_lmac_id(rvu->pf2cgxlmac_map[pf], &cgx_id, &lmac_id); + cgxd = rvu_cgx_pdata(cgx_id, rvu); + mac_ops = get_mac_ops(cgxd); if (req->set) - cgx_lmac_set_pause_frm(rvu_cgx_pdata(cgx_id, rvu), lmac_id, - req->tx_pause, req->rx_pause); + mac_ops->mac_enadis_pause_frm(cgxd, lmac_id, + req->tx_pause, req->rx_pause); else - cgx_lmac_get_pause_frm(rvu_cgx_pdata(cgx_id, rvu), lmac_id, - &rsp->tx_pause, &rsp->rx_pause); + mac_ops->mac_get_pause_frm_status(cgxd, lmac_id, + &rsp->tx_pause, + &rsp->rx_pause); return 0; } diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c index ee27ddd..d300019 100644 --- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c +++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c @@ -16,6 +16,7 @@ #include "rvu.h" #include "npc.h" #include "cgx.h" +#include "lmac_common.h" static void nix_free_tx_vtag_entries(struct rvu *rvu, u16 pcifunc); static int rvu_nix_get_bpid(struct rvu *rvu, struct nix_bp_cfg_req *req, @@ -214,6 +215,7 @@ static bool is_valid_txschq(struct rvu *rvu, int blkaddr, static int nix_interface_init(struct rvu *rvu, u16 pcifunc, int type, int nixlf) { struct rvu_pfvf *pfvf = rvu_get_pfvf(rvu, pcifunc); + struct mac_ops *mac_ops; int pkind, pf, vf, lbkid; u8 cgx_id, lmac_id; int err; @@ -240,10 +242,12 @@ static int nix_interface_init(struct rvu *rvu, u16 pcifunc, int type, int nixlf) cgx_set_pkind(rvu_cgx_pdata(cgx_id, rvu), lmac_id, pkind); rvu_npc_set_pkind(rvu, pkind, pfvf); + mac_ops = get_mac_ops(rvu_cgx_pdata(cgx_id, rvu)); /* By default we enable pause frames */ if ((pcifunc & RVU_PFVF_FUNC_MASK) == 0) - cgx_lmac_set_pause_frm(rvu_cgx_pdata(cgx_id, rvu), - lmac_id, true, true); + mac_ops->mac_enadis_pause_frm(rvu_cgx_pdata(cgx_id, + rvu), + lmac_id, true, true); break; case NIX_INTF_TYPE_LBK: vf = (pcifunc & RVU_PFVF_FUNC_MASK) - 1;

[net-next,v4,12/14] octeontx2-af: cn10k: Add RPM LMAC pause frame support

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