diff options
Diffstat (limited to 'drivers/net/bnx2x/bnx2x_link.c')
| -rw-r--r-- | drivers/net/bnx2x/bnx2x_link.c | 666 |
1 files changed, 625 insertions, 41 deletions
diff --git a/drivers/net/bnx2x/bnx2x_link.c b/drivers/net/bnx2x/bnx2x_link.c index 580919619252..43b0de24f391 100644 --- a/drivers/net/bnx2x/bnx2x_link.c +++ b/drivers/net/bnx2x/bnx2x_link.c @@ -164,7 +164,8 @@ #define EDC_MODE_PASSIVE_DAC 0x0055 - +#define ETS_BW_LIMIT_CREDIT_UPPER_BOUND (0x5000) +#define ETS_BW_LIMIT_CREDIT_WEIGHT (0x5000) /**********************************************************/ /* INTERFACE */ /**********************************************************/ @@ -205,6 +206,270 @@ static u32 bnx2x_bits_dis(struct bnx2x *bp, u32 reg, u32 bits) return val; } +/******************************************************************/ +/* ETS section */ +/******************************************************************/ +void bnx2x_ets_disabled(struct link_params *params) +{ + /* ETS disabled configuration*/ + struct bnx2x *bp = params->bp; + + DP(NETIF_MSG_LINK, "ETS disabled configuration\n"); + + /** + * mapping between entry priority to client number (0,1,2 -debug and + * management clients, 3 - COS0 client, 4 - COS client)(HIGHEST) + * 3bits client num. + * PRI4 | PRI3 | PRI2 | PRI1 | PRI0 + * cos1-100 cos0-011 dbg1-010 dbg0-001 MCP-000 + */ + + REG_WR(bp, NIG_REG_P0_TX_ARB_PRIORITY_CLIENT, 0x4688); + /** + * Bitmap of 5bits length. Each bit specifies whether the entry behaves + * as strict. Bits 0,1,2 - debug and management entries, 3 - + * COS0 entry, 4 - COS1 entry. + * COS1 | COS0 | DEBUG1 | DEBUG0 | MGMT + * bit4 bit3 bit2 bit1 bit0 + * MCP and debug are strict + */ + + REG_WR(bp, NIG_REG_P0_TX_ARB_CLIENT_IS_STRICT, 0x7); + /* defines which entries (clients) are subjected to WFQ arbitration */ + REG_WR(bp, NIG_REG_P0_TX_ARB_CLIENT_IS_SUBJECT2WFQ, 0); + /** + * For strict priority entries defines the number of consecutive + * slots for the highest priority. + */ + REG_WR(bp, NIG_REG_P0_TX_ARB_NUM_STRICT_ARB_SLOTS, 0x100); + /** + * mapping between the CREDIT_WEIGHT registers and actual client + * numbers + */ + REG_WR(bp, NIG_REG_P0_TX_ARB_CLIENT_CREDIT_MAP, 0); + REG_WR(bp, NIG_REG_P0_TX_ARB_CREDIT_WEIGHT_0, 0); + REG_WR(bp, NIG_REG_P0_TX_ARB_CREDIT_WEIGHT_1, 0); + + REG_WR(bp, NIG_REG_P0_TX_ARB_CREDIT_UPPER_BOUND_0, 0); + REG_WR(bp, NIG_REG_P0_TX_ARB_CREDIT_UPPER_BOUND_1, 0); + REG_WR(bp, PBF_REG_HIGH_PRIORITY_COS_NUM, 0); + /* ETS mode disable */ + REG_WR(bp, PBF_REG_ETS_ENABLED, 0); + /** + * If ETS mode is enabled (there is no strict priority) defines a WFQ + * weight for COS0/COS1. + */ + REG_WR(bp, PBF_REG_COS0_WEIGHT, 0x2710); + REG_WR(bp, PBF_REG_COS1_WEIGHT, 0x2710); + /* Upper bound that COS0_WEIGHT can reach in the WFQ arbiter */ + REG_WR(bp, PBF_REG_COS0_UPPER_BOUND, 0x989680); + REG_WR(bp, PBF_REG_COS1_UPPER_BOUND, 0x989680); + /* Defines the number of consecutive slots for the strict priority */ + REG_WR(bp, PBF_REG_NUM_STRICT_ARB_SLOTS, 0); +} + +void bnx2x_ets_bw_limit_common(const struct link_params *params) +{ + /* ETS disabled configuration */ + struct bnx2x *bp = params->bp; + DP(NETIF_MSG_LINK, "ETS enabled BW limit configuration\n"); + /** + * defines which entries (clients) are subjected to WFQ arbitration + * COS0 0x8 + * COS1 0x10 + */ + REG_WR(bp, NIG_REG_P0_TX_ARB_CLIENT_IS_SUBJECT2WFQ, 0x18); + /** + * mapping between the ARB_CREDIT_WEIGHT registers and actual + * client numbers (WEIGHT_0 does not actually have to represent + * client 0) + * PRI4 | PRI3 | PRI2 | PRI1 | PRI0 + * cos1-001 cos0-000 dbg1-100 dbg0-011 MCP-010 + */ + REG_WR(bp, NIG_REG_P0_TX_ARB_CLIENT_CREDIT_MAP, 0x111A); + + REG_WR(bp, NIG_REG_P0_TX_ARB_CREDIT_UPPER_BOUND_0, + ETS_BW_LIMIT_CREDIT_UPPER_BOUND); + REG_WR(bp, NIG_REG_P0_TX_ARB_CREDIT_UPPER_BOUND_1, + ETS_BW_LIMIT_CREDIT_UPPER_BOUND); + + /* ETS mode enabled*/ + REG_WR(bp, PBF_REG_ETS_ENABLED, 1); + + /* Defines the number of consecutive slots for the strict priority */ + REG_WR(bp, PBF_REG_NUM_STRICT_ARB_SLOTS, 0); + /** + * Bitmap of 5bits length. Each bit specifies whether the entry behaves + * as strict. Bits 0,1,2 - debug and management entries, 3 - COS0 + * entry, 4 - COS1 entry. + * COS1 | COS0 | DEBUG21 | DEBUG0 | MGMT + * bit4 bit3 bit2 bit1 bit0 + * MCP and debug are strict + */ + REG_WR(bp, NIG_REG_P0_TX_ARB_CLIENT_IS_STRICT, 0x7); + + /* Upper bound that COS0_WEIGHT can reach in the WFQ arbiter.*/ + REG_WR(bp, PBF_REG_COS0_UPPER_BOUND, + ETS_BW_LIMIT_CREDIT_UPPER_BOUND); + REG_WR(bp, PBF_REG_COS1_UPPER_BOUND, + ETS_BW_LIMIT_CREDIT_UPPER_BOUND); +} + +void bnx2x_ets_bw_limit(const struct link_params *params, const u32 cos0_bw, + const u32 cos1_bw) +{ + /* ETS disabled configuration*/ + struct bnx2x *bp = params->bp; + const u32 total_bw = cos0_bw + cos1_bw; + u32 cos0_credit_weight = 0; + u32 cos1_credit_weight = 0; + + DP(NETIF_MSG_LINK, "ETS enabled BW limit configuration\n"); + + if ((0 == total_bw) || + (0 == cos0_bw) || + (0 == cos1_bw)) { + DP(NETIF_MSG_LINK, + "bnx2x_ets_bw_limit: Total BW can't be zero\n"); + return; + } + + cos0_credit_weight = (cos0_bw * ETS_BW_LIMIT_CREDIT_WEIGHT)/ + total_bw; + cos1_credit_weight = (cos1_bw * ETS_BW_LIMIT_CREDIT_WEIGHT)/ + total_bw; + + bnx2x_ets_bw_limit_common(params); + + REG_WR(bp, NIG_REG_P0_TX_ARB_CREDIT_WEIGHT_0, cos0_credit_weight); + REG_WR(bp, NIG_REG_P0_TX_ARB_CREDIT_WEIGHT_1, cos1_credit_weight); + + REG_WR(bp, PBF_REG_COS0_WEIGHT, cos0_credit_weight); + REG_WR(bp, PBF_REG_COS1_WEIGHT, cos1_credit_weight); +} + +u8 bnx2x_ets_strict(const struct link_params *params, const u8 strict_cos) +{ + /* ETS disabled configuration*/ + struct bnx2x *bp = params->bp; + u32 val = 0; + + DP(NETIF_MSG_LINK, "ETS enabled strict configuration\n"); + /** + * Bitmap of 5bits length. Each bit specifies whether the entry behaves + * as strict. Bits 0,1,2 - debug and management entries, + * 3 - COS0 entry, 4 - COS1 entry. + * COS1 | COS0 | DEBUG21 | DEBUG0 | MGMT + * bit4 bit3 bit2 bit1 bit0 + * MCP and debug are strict + */ + REG_WR(bp, NIG_REG_P0_TX_ARB_CLIENT_IS_STRICT, 0x1F); + /** + * For strict priority entries defines the number of consecutive slots + * for the highest priority. + */ + REG_WR(bp, NIG_REG_P0_TX_ARB_NUM_STRICT_ARB_SLOTS, 0x100); + /* ETS mode disable */ + REG_WR(bp, PBF_REG_ETS_ENABLED, 0); + /* Defines the number of consecutive slots for the strict priority */ + REG_WR(bp, PBF_REG_NUM_STRICT_ARB_SLOTS, 0x100); + + /* Defines the number of consecutive slots for the strict priority */ + REG_WR(bp, PBF_REG_HIGH_PRIORITY_COS_NUM, strict_cos); + + /** + * mapping between entry priority to client number (0,1,2 -debug and + * management clients, 3 - COS0 client, 4 - COS client)(HIGHEST) + * 3bits client num. + * PRI4 | PRI3 | PRI2 | PRI1 | PRI0 + * dbg0-010 dbg1-001 cos1-100 cos0-011 MCP-000 + * dbg0-010 dbg1-001 cos0-011 cos1-100 MCP-000 + */ + val = (0 == strict_cos) ? 0x2318 : 0x22E0; + REG_WR(bp, NIG_REG_P0_TX_ARB_PRIORITY_CLIENT, val); + + return 0; +} +/******************************************************************/ +/* ETS section */ +/******************************************************************/ + +static void bnx2x_bmac2_get_pfc_stat(struct link_params *params, + u32 pfc_frames_sent[2], + u32 pfc_frames_received[2]) +{ + /* Read pfc statistic */ + struct bnx2x *bp = params->bp; + u32 bmac_addr = params->port ? NIG_REG_INGRESS_BMAC1_MEM : + NIG_REG_INGRESS_BMAC0_MEM; + + DP(NETIF_MSG_LINK, "pfc statistic read from BMAC\n"); + + REG_RD_DMAE(bp, bmac_addr + BIGMAC2_REGISTER_TX_STAT_GTPP, + pfc_frames_sent, 2); + + REG_RD_DMAE(bp, bmac_addr + BIGMAC2_REGISTER_RX_STAT_GRPP, + pfc_frames_received, 2); + +} +static void bnx2x_emac_get_pfc_stat(struct link_params *params, + u32 pfc_frames_sent[2], + u32 pfc_frames_received[2]) +{ + /* Read pfc statistic */ + struct bnx2x *bp = params->bp; + u32 emac_base = params->port ? GRCBASE_EMAC1 : GRCBASE_EMAC0; + u32 val_xon = 0; + u32 val_xoff = 0; + + DP(NETIF_MSG_LINK, "pfc statistic read from EMAC\n"); + + /* PFC received frames */ + val_xoff = REG_RD(bp, emac_base + + EMAC_REG_RX_PFC_STATS_XOFF_RCVD); + val_xoff &= EMAC_REG_RX_PFC_STATS_XOFF_RCVD_COUNT; + val_xon = REG_RD(bp, emac_base + EMAC_REG_RX_PFC_STATS_XON_RCVD); + val_xon &= EMAC_REG_RX_PFC_STATS_XON_RCVD_COUNT; + + pfc_frames_received[0] = val_xon + val_xoff; + + /* PFC received sent */ + val_xoff = REG_RD(bp, emac_base + + EMAC_REG_RX_PFC_STATS_XOFF_SENT); + val_xoff &= EMAC_REG_RX_PFC_STATS_XOFF_SENT_COUNT; + val_xon = REG_RD(bp, emac_base + EMAC_REG_RX_PFC_STATS_XON_SENT); + val_xon &= EMAC_REG_RX_PFC_STATS_XON_SENT_COUNT; + + pfc_frames_sent[0] = val_xon + val_xoff; +} + +void bnx2x_pfc_statistic(struct link_params *params, struct link_vars *vars, + u32 pfc_frames_sent[2], + u32 pfc_frames_received[2]) +{ + /* Read pfc statistic */ + struct bnx2x *bp = params->bp; + u32 val = 0; + DP(NETIF_MSG_LINK, "pfc statistic\n"); + + if (!vars->link_up) + return; + + val = REG_RD(bp, MISC_REG_RESET_REG_2); + if ((val & (MISC_REGISTERS_RESET_REG_2_RST_BMAC0 << params->port)) + == 0) { + DP(NETIF_MSG_LINK, "About to read stats from EMAC\n"); + bnx2x_emac_get_pfc_stat(params, pfc_frames_sent, + pfc_frames_received); + } else { + DP(NETIF_MSG_LINK, "About to read stats from BMAC\n"); + bnx2x_bmac2_get_pfc_stat(params, pfc_frames_sent, + pfc_frames_received); + } +} +/******************************************************************/ +/* MAC/PBF section */ +/******************************************************************/ static void bnx2x_emac_init(struct link_params *params, struct link_vars *vars) { @@ -315,24 +580,55 @@ static u8 bnx2x_emac_enable(struct link_params *params, /* pause enable/disable */ bnx2x_bits_dis(bp, emac_base + EMAC_REG_EMAC_RX_MODE, EMAC_RX_MODE_FLOW_EN); - if (vars->flow_ctrl & BNX2X_FLOW_CTRL_RX) - bnx2x_bits_en(bp, emac_base + - EMAC_REG_EMAC_RX_MODE, - EMAC_RX_MODE_FLOW_EN); bnx2x_bits_dis(bp, emac_base + EMAC_REG_EMAC_TX_MODE, - (EMAC_TX_MODE_EXT_PAUSE_EN | - EMAC_TX_MODE_FLOW_EN)); - if (vars->flow_ctrl & BNX2X_FLOW_CTRL_TX) - bnx2x_bits_en(bp, emac_base + - EMAC_REG_EMAC_TX_MODE, - (EMAC_TX_MODE_EXT_PAUSE_EN | - EMAC_TX_MODE_FLOW_EN)); + (EMAC_TX_MODE_EXT_PAUSE_EN | + EMAC_TX_MODE_FLOW_EN)); + if (!(params->feature_config_flags & + FEATURE_CONFIG_PFC_ENABLED)) { + if (vars->flow_ctrl & BNX2X_FLOW_CTRL_RX) + bnx2x_bits_en(bp, emac_base + + EMAC_REG_EMAC_RX_MODE, + EMAC_RX_MODE_FLOW_EN); + + if (vars->flow_ctrl & BNX2X_FLOW_CTRL_TX) + bnx2x_bits_en(bp, emac_base + + EMAC_REG_EMAC_TX_MODE, + (EMAC_TX_MODE_EXT_PAUSE_EN | + EMAC_TX_MODE_FLOW_EN)); + } else + bnx2x_bits_en(bp, emac_base + EMAC_REG_EMAC_TX_MODE, + EMAC_TX_MODE_FLOW_EN); } /* KEEP_VLAN_TAG, promiscuous */ val = REG_RD(bp, emac_base + EMAC_REG_EMAC_RX_MODE); val |= EMAC_RX_MODE_KEEP_VLAN_TAG | EMAC_RX_MODE_PROMISCUOUS; + + /** + * Setting this bit causes MAC control frames (except for pause + * frames) to be passed on for processing. This setting has no + * affect on the operation of the pause frames. This bit effects + * all packets regardless of RX Parser packet sorting logic. + * Turn the PFC off to make sure we are in Xon state before + * enabling it. + */ + EMAC_WR(bp, EMAC_REG_RX_PFC_MODE, 0); + if (params->feature_config_flags & FEATURE_CONFIG_PFC_ENABLED) { + DP(NETIF_MSG_LINK, "PFC is enabled\n"); + /* Enable PFC again */ + EMAC_WR(bp, EMAC_REG_RX_PFC_MODE, + EMAC_REG_RX_PFC_MODE_RX_EN | + EMAC_REG_RX_PFC_MODE_TX_EN | + EMAC_REG_RX_PFC_MODE_PRIORITIES); + + EMAC_WR(bp, EMAC_REG_RX_PFC_PARAM, + ((0x0101 << + EMAC_REG_RX_PFC_PARAM_OPCODE_BITSHIFT) | + (0x00ff << + EMAC_REG_RX_PFC_PARAM_PRIORITY_EN_BITSHIFT))); + val |= EMAC_RX_MODE_KEEP_MAC_CONTROL; + } EMAC_WR(bp, EMAC_REG_EMAC_RX_MODE, val); /* Set Loopback */ @@ -362,7 +658,9 @@ static u8 bnx2x_emac_enable(struct link_params *params, /* enable the NIG in/out to the emac */ REG_WR(bp, NIG_REG_EMAC0_IN_EN + port*4, 0x1); val = 0; - if (vars->flow_ctrl & BNX2X_FLOW_CTRL_TX) + if ((params->feature_config_flags & + FEATURE_CONFIG_PFC_ENABLED) || + (vars->flow_ctrl & BNX2X_FLOW_CTRL_TX)) val = 1; REG_WR(bp, NIG_REG_EMAC0_PAUSE_OUT_EN + port*4, val); @@ -383,9 +681,38 @@ static u8 bnx2x_emac_enable(struct link_params *params, return 0; } -static void bnx2x_update_bmac2(struct link_params *params, - struct link_vars *vars, - u8 is_lb) +static void bnx2x_update_pfc_bmac1(struct link_params *params, + struct link_vars *vars) +{ + u32 wb_data[2]; + struct bnx2x *bp = params->bp; + u32 bmac_addr = params->port ? NIG_REG_INGRESS_BMAC1_MEM : + NIG_REG_INGRESS_BMAC0_MEM; + + u32 val = 0x14; + if ((!(params->feature_config_flags & + FEATURE_CONFIG_PFC_ENABLED)) && + (vars->flow_ctrl & BNX2X_FLOW_CTRL_RX)) + /* Enable BigMAC to react on received Pause packets */ + val |= (1<<5); + wb_data[0] = val; + wb_data[1] = 0; + REG_WR_DMAE(bp, bmac_addr + BIGMAC_REGISTER_RX_CONTROL, wb_data, 2); + + /* tx control */ + val = 0xc0; + if (!(params->feature_config_flags & + FEATURE_CONFIG_PFC_ENABLED) && + (vars->flow_ctrl & BNX2X_FLOW_CTRL_TX)) + val |= 0x800000; + wb_data[0] = val; + wb_data[1] = 0; + REG_WR_DMAE(bp, bmac_addr + BIGMAC_REGISTER_TX_CONTROL, wb_data, 2); +} + +static void bnx2x_update_pfc_bmac2(struct link_params *params, + struct link_vars *vars, + u8 is_lb) { /* * Set rx control: Strip CRC and enable BigMAC to relay @@ -397,7 +724,9 @@ static void bnx2x_update_bmac2(struct link_params *params, NIG_REG_INGRESS_BMAC0_MEM; u32 val = 0x14; - if (vars->flow_ctrl & BNX2X_FLOW_CTRL_RX) + if ((!(params->feature_config_flags & + FEATURE_CONFIG_PFC_ENABLED)) && + (vars->flow_ctrl & BNX2X_FLOW_CTRL_RX)) /* Enable BigMAC to react on received Pause packets */ val |= (1<<5); wb_data[0] = val; @@ -408,14 +737,47 @@ static void bnx2x_update_bmac2(struct link_params *params, /* Tx control */ val = 0xc0; - if (vars->flow_ctrl & BNX2X_FLOW_CTRL_TX) + if (!(params->feature_config_flags & + FEATURE_CONFIG_PFC_ENABLED) && + (vars->flow_ctrl & BNX2X_FLOW_CTRL_TX)) val |= 0x800000; wb_data[0] = val; wb_data[1] = 0; - REG_WR_DMAE(bp, bmac_addr + BIGMAC2_REGISTER_TX_CONTROL, - wb_data, 2); + REG_WR_DMAE(bp, bmac_addr + BIGMAC2_REGISTER_TX_CONTROL, wb_data, 2); + + if (params->feature_config_flags & FEATURE_CONFIG_PFC_ENABLED) { + DP(NETIF_MSG_LINK, "PFC is enabled\n"); + /* Enable PFC RX & TX & STATS and set 8 COS */ + wb_data[0] = 0x0; + wb_data[0] |= (1<<0); /* RX */ + wb_data[0] |= (1<<1); /* TX */ + wb_data[0] |= (1<<2); /* Force initial Xon */ + wb_data[0] |= (1<<3); /* 8 cos */ + wb_data[0] |= (1<<5); /* STATS */ + wb_data[1] = 0; + REG_WR_DMAE(bp, bmac_addr + BIGMAC2_REGISTER_PFC_CONTROL, + wb_data, 2); + /* Clear the force Xon */ + wb_data[0] &= ~(1<<2); + } else { + DP(NETIF_MSG_LINK, "PFC is disabled\n"); + /* disable PFC RX & TX & STATS and set 8 COS */ + wb_data[0] = 0x8; + wb_data[1] = 0; + } + + REG_WR_DMAE(bp, bmac_addr + BIGMAC2_REGISTER_PFC_CONTROL, wb_data, 2); + /** + * Set Time (based unit is 512 bit time) between automatic + * re-sending of PP packets amd enable automatic re-send of + * Per-Priroity Packet as long as pp_gen is asserted and + * pp_disable is low. + */ val = 0x8000; + if (params->feature_config_flags & FEATURE_CONFIG_PFC_ENABLED) + val |= (1<<16); /* enable automatic re-send */ + wb_data[0] = val; wb_data[1] = 0; REG_WR_DMAE(bp, bmac_addr + BIGMAC2_REGISTER_TX_PAUSE_CONTROL, @@ -427,6 +789,9 @@ static void bnx2x_update_bmac2(struct link_params *params, val |= 0x4; /* Local loopback */ DP(NETIF_MSG_LINK, "enable bmac loopback\n"); } + /* When PFC enabled, Pass pause frames towards the NIG. */ + if (params->feature_config_flags & FEATURE_CONFIG_PFC_ENABLED) + val |= ((1<<6)|(1<<5)); wb_data[0] = val; wb_data[1] = 0; @@ -434,6 +799,239 @@ static void bnx2x_update_bmac2(struct link_params *params, wb_data, 2); } +static void bnx2x_update_pfc_brb(struct link_params *params, + struct link_vars *vars, + struct bnx2x_nig_brb_pfc_port_params *pfc_params) +{ + struct bnx2x *bp = params->bp; + int set_pfc = params->feature_config_flags & + FEATURE_CONFIG_PFC_ENABLED; + + /* default - pause configuration */ + u32 pause_xoff_th = PFC_BRB_MAC_PAUSE_XOFF_THRESHOLD_PAUSEABLE; + u32 pause_xon_th = PFC_BRB_MAC_PAUSE_XON_THRESHOLD_PAUSEABLE; + u32 full_xoff_th = PFC_BRB_MAC_FULL_XOFF_THRESHOLD_PAUSEABLE; + u32 full_xon_th = PFC_BRB_MAC_FULL_XON_THRESHOLD_PAUSEABLE; + + if (set_pfc && pfc_params) + /* First COS */ + if (!pfc_params->cos0_pauseable) { + pause_xoff_th = + PFC_BRB_MAC_PAUSE_XOFF_THRESHOLD_NON_PAUSEABLE; + pause_xon_th = + PFC_BRB_MAC_PAUSE_XON_THRESHOLD_NON_PAUSEABLE; + full_xoff_th = + PFC_BRB_MAC_FULL_XOFF_THRESHOLD_NON_PAUSEABLE; + full_xon_th = + PFC_BRB_MAC_FULL_XON_THRESHOLD_NON_PAUSEABLE; + } + /* The number of free blocks below which the pause signal to class 0 + of MAC #n is asserted. n=0,1 */ + REG_WR(bp, BRB1_REG_PAUSE_0_XOFF_THRESHOLD_0 , pause_xoff_th); + /* The number of free blocks above which the pause signal to class 0 + of MAC #n is de-asserted. n=0,1 */ + REG_WR(bp, BRB1_REG_PAUSE_0_XON_THRESHOLD_0 , pause_xon_th); + /* The number of free blocks below which the full signal to class 0 + of MAC #n is asserted. n=0,1 */ + REG_WR(bp, BRB1_REG_FULL_0_XOFF_THRESHOLD_0 , full_xoff_th); + /* The number of free blocks above which the full signal to class 0 + of MAC #n is de-asserted. n=0,1 */ + REG_WR(bp, BRB1_REG_FULL_0_XON_THRESHOLD_0 , full_xon_th); + + if (set_pfc && pfc_params) { + /* Second COS */ + if (pfc_params->cos1_pauseable) { + pause_xoff_th = + PFC_BRB_MAC_PAUSE_XOFF_THRESHOLD_PAUSEABLE; + pause_xon_th = + PFC_BRB_MAC_PAUSE_XON_THRESHOLD_PAUSEABLE; + full_xoff_th = + PFC_BRB_MAC_FULL_XOFF_THRESHOLD_PAUSEABLE; + full_xon_th = + PFC_BRB_MAC_FULL_XON_THRESHOLD_PAUSEABLE; + } else { + pause_xoff_th = + PFC_BRB_MAC_PAUSE_XOFF_THRESHOLD_NON_PAUSEABLE; + pause_xon_th = + PFC_BRB_MAC_PAUSE_XON_THRESHOLD_NON_PAUSEABLE; + full_xoff_th = + PFC_BRB_MAC_FULL_XOFF_THRESHOLD_NON_PAUSEABLE; + full_xon_th = + PFC_BRB_MAC_FULL_XON_THRESHOLD_NON_PAUSEABLE; + } + /** + * The number of free blocks below which the pause signal to + * class 1 of MAC #n is asserted. n=0,1 + **/ + REG_WR(bp, BRB1_REG_PAUSE_1_XOFF_THRESHOLD_0, pause_xoff_th); + /** + * The number of free blocks above which the pause signal to + * class 1 of MAC #n is de-asserted. n=0,1 + **/ + REG_WR(bp, BRB1_REG_PAUSE_1_XON_THRESHOLD_0, pause_xon_th); + /** + * The number of free blocks below which the full signal to + * class 1 of MAC #n is asserted. n=0,1 + **/ + REG_WR(bp, BRB1_REG_FULL_1_XOFF_THRESHOLD_0, full_xoff_th); + /** + * The number of free blocks above which the full signal to + * class 1 of MAC #n is de-asserted. n=0,1 + **/ + REG_WR(bp, BRB1_REG_FULL_1_XON_THRESHOLD_0, full_xon_th); + } +} + +static void bnx2x_update_pfc_nig(struct link_params *params, + struct link_vars *vars, + struct bnx2x_nig_brb_pfc_port_params *nig_params) +{ + u32 xcm_mask = 0, ppp_enable = 0, pause_enable = 0, llfc_out_en = 0; + u32 llfc_enable = 0, xcm0_out_en = 0, p0_hwpfc_enable = 0; + u32 pkt_priority_to_cos = 0; + u32 val; + struct bnx2x *bp = params->bp; + int port = params->port; + int set_pfc = params->feature_config_flags & + FEATURE_CONFIG_PFC_ENABLED; + DP(NETIF_MSG_LINK, "updating pfc nig parameters\n"); + + /** + * When NIG_LLH0_XCM_MASK_REG_LLHX_XCM_MASK_BCN bit is set + * MAC control frames (that are not pause packets) + * will be forwarded to the XCM. + */ + xcm_mask = REG_RD(bp, + port ? NIG_REG_LLH1_XCM_MASK : + NIG_REG_LLH0_XCM_MASK); + /** + * nig params will override non PFC params, since it's possible to + * do transition from PFC to SAFC + */ + if (set_pfc) { + pause_enable = 0; + llfc_out_en = 0; + llfc_enable = 0; + ppp_enable = 1; + xcm_mask &= ~(port ? NIG_LLH1_XCM_MASK_REG_LLH1_XCM_MASK_BCN : + NIG_LLH0_XCM_MASK_REG_LLH0_XCM_MASK_BCN); + xcm0_out_en = 0; + p0_hwpfc_enable = 1; + } else { + if (nig_params) { + llfc_out_en = nig_params->llfc_out_en; + llfc_enable = nig_params->llfc_enable; + pause_enable = nig_params->pause_enable; + } else /*defaul non PFC mode - PAUSE */ + pause_enable = 1; + + xcm_mask |= (port ? NIG_LLH1_XCM_MASK_REG_LLH1_XCM_MASK_BCN : + NIG_LLH0_XCM_MASK_REG_LLH0_XCM_MASK_BCN); + xcm0_out_en = 1; + } + + REG_WR(bp, port ? NIG_REG_LLFC_OUT_EN_1 : + NIG_REG_LLFC_OUT_EN_0, llfc_out_en); + REG_WR(bp, port ? NIG_REG_LLFC_ENABLE_1 : + NIG_REG_LLFC_ENABLE_0, llfc_enable); + REG_WR(bp, port ? NIG_REG_PAUSE_ENABLE_1 : + NIG_REG_PAUSE_ENABLE_0, pause_enable); + + REG_WR(bp, port ? NIG_REG_PPP_ENABLE_1 : + NIG_REG_PPP_ENABLE_0, ppp_enable); + + REG_WR(bp, port ? NIG_REG_LLH1_XCM_MASK : + NIG_REG_LLH0_XCM_MASK, xcm_mask); + + REG_WR(bp, NIG_REG_LLFC_EGRESS_SRC_ENABLE_0, 0x7); + + /* output enable for RX_XCM # IF */ + REG_WR(bp, NIG_REG_XCM0_OUT_EN, xcm0_out_en); + + /* HW PFC TX enable */ + REG_WR(bp, NIG_REG_P0_HWPFC_ENABLE, p0_hwpfc_enable); + + /* 0x2 = BMAC, 0x1= EMAC */ + switch (vars->mac_type) { + case MAC_TYPE_EMAC: + val = 1; + break; + case MAC_TYPE_BMAC: + val = 0; + break; + default: + val = 0; + break; + } + REG_WR(bp, NIG_REG_EGRESS_EMAC0_PORT, val); + + if (nig_params) { + pkt_priority_to_cos = nig_params->pkt_priority_to_cos; + + REG_WR(bp, port ? NIG_REG_P1_RX_COS0_PRIORITY_MASK : + NIG_REG_P0_RX_COS0_PRIORITY_MASK, + nig_params->rx_cos0_priority_mask); + + REG_WR(bp, port ? NIG_REG_P1_RX_COS1_PRIORITY_MASK : + NIG_REG_P0_RX_COS1_PRIORITY_MASK, + nig_params->rx_cos1_priority_mask); + + REG_WR(bp, port ? NIG_REG_LLFC_HIGH_PRIORITY_CLASSES_1 : + NIG_REG_LLFC_HIGH_PRIORITY_CLASSES_0, + nig_params->llfc_high_priority_classes); + + REG_WR(bp, port ? NIG_REG_LLFC_LOW_PRIORITY_CLASSES_1 : + NIG_REG_LLFC_LOW_PRIORITY_CLASSES_0, + nig_params->llfc_low_priority_classes); + } + REG_WR(bp, port ? NIG_REG_P1_PKT_PRIORITY_TO_COS : + NIG_REG_P0_PKT_PRIORITY_TO_COS, + pkt_priority_to_cos); +} + + +void bnx2x_update_pfc(struct link_params *params, + struct link_vars *vars, + struct bnx2x_nig_brb_pfc_port_params *pfc_params) +{ + /** + * The PFC and pause are orthogonal to one another, meaning when + * PFC is enabled, the pause are disabled, and when PFC is + * disabled, pause are set according to the pause result. + */ + u32 val; + struct bnx2x *bp = params->bp; + + /* update NIG params */ + bnx2x_update_pfc_nig(params, vars, pfc_params); + + /* update BRB params */ + bnx2x_update_pfc_brb(params, vars, pfc_params); + + if (!vars->link_up) + return; + + val = REG_RD(bp, MISC_REG_RESET_REG_2); + if ((val & (MISC_REGISTERS_RESET_REG_2_RST_BMAC0 << params->port)) + == 0) { + DP(NETIF_MSG_LINK, "About to update PFC in EMAC\n"); + bnx2x_emac_enable(params, vars, 0); + return; + } + + DP(NETIF_MSG_LINK, "About to update PFC in BMAC\n"); + if (CHIP_IS_E2(bp)) + bnx2x_update_pfc_bmac2(params, vars, 0); + else + bnx2x_update_pfc_bmac1(params, vars); + + val = 0; + if ((params->feature_config_flags & + FEATURE_CONFIG_PFC_ENABLED) || + (vars->flow_ctrl & BNX2X_FLOW_CTRL_TX)) + val = 1; + REG_WR(bp, NIG_REG_BMAC0_PAUSE_OUT_EN + params->port*4, val); +} static u8 bnx2x_bmac1_enable(struct link_params *params, struct link_vars *vars, @@ -465,15 +1063,6 @@ static u8 bnx2x_bmac1_enable(struct link_params *params, REG_WR_DMAE(bp, bmac_addr + BIGMAC_REGISTER_TX_SOURCE_ADDR, wb_data, 2); - /* tx control */ - val = 0xc0; - if (vars->flow_ctrl & BNX2X_FLOW_CTRL_TX) - val |= 0x800000; - wb_data[0] = val; - wb_data[1] = 0; - REG_WR_DMAE(bp, bmac_addr + BIGMAC_REGISTER_TX_CONTROL, - wb_data, 2); - /* mac control */ val = 0x3; if (is_lb) { @@ -491,14 +1080,7 @@ static u8 bnx2x_bmac1_enable(struct link_params *params, REG_WR_DMAE(bp, bmac_addr + BIGMAC_REGISTER_RX_MAX_SIZE, wb_data, 2); - /* rx control set to don't strip crc */ - val = 0x14; - if (vars->flow_ctrl & BNX2X_FLOW_CTRL_RX) - val |= 0x20; - wb_data[0] = val; - wb_data[1] = 0; - REG_WR_DMAE(bp, bmac_addr + BIGMAC_REGISTER_RX_CONTROL, - wb_data, 2); + bnx2x_update_pfc_bmac1(params, vars); /* set tx mtu */ wb_data[0] = ETH_MAX_JUMBO_PACKET_SIZE + ETH_OVREHEAD; @@ -595,7 +1177,7 @@ static u8 bnx2x_bmac2_enable(struct link_params *params, REG_WR_DMAE(bp, bmac_addr + BIGMAC2_REGISTER_CNT_MAX_SIZE, wb_data, 2); udelay(30); - bnx2x_update_bmac2(params, vars, is_lb); + bnx2x_update_pfc_bmac2(params, vars, is_lb); return 0; } @@ -627,7 +1209,9 @@ static u8 bnx2x_bmac_enable(struct link_params *params, REG_WR(bp, NIG_REG_XGXS_LANE_SEL_P0 + port*4, 0x0); REG_WR(bp, NIG_REG_EGRESS_EMAC0_PORT + port*4, 0x0); val = 0; - if (vars->flow_ctrl & BNX2X_FLOW_CTRL_TX) + if ((params->feature_config_flags & + FEATURE_CONFIG_PFC_ENABLED) || + (vars->flow_ctrl & BNX2X_FLOW_CTRL_TX)) val = 1; REG_WR(bp, NIG_REG_BMAC0_PAUSE_OUT_EN + port*4, val); REG_WR(bp, NIG_REG_EGRESS_EMAC0_OUT_EN + port*4, 0x0); @@ -3904,7 +4488,7 @@ static u8 bnx2x_8726_read_sfp_module_eeprom(struct bnx2x_phy *phy, MDIO_PMA_REG_SFP_TWO_WIRE_CTRL, &val); if ((val & MDIO_PMA_REG_SFP_TWO_WIRE_CTRL_STATUS_MASK) == MDIO_PMA_REG_SFP_TWO_WIRE_STATUS_IDLE) - return 0;; + return 0; msleep(1); } return -EINVAL; @@ -3988,7 +4572,7 @@ static u8 bnx2x_8727_read_sfp_module_eeprom(struct bnx2x_phy *phy, MDIO_PMA_REG_SFP_TWO_WIRE_CTRL, &val); if ((val & MDIO_PMA_REG_SFP_TWO_WIRE_CTRL_STATUS_MASK) == MDIO_PMA_REG_SFP_TWO_WIRE_STATUS_IDLE) - return 0;; + return 0; msleep(1); } |