From mboxrd@z Thu Jan 1 00:00:00 1970 From: Rahul Lakkireddy Subject: [PATCH 05/13] cxgbe: initialize SGE and queues for VF Date: Sun, 11 Mar 2018 04:18:23 +0530 Message-ID: <26af679b31d10f695a23e0dc3ba6bc202c0d6bb1.1520720053.git.rahul.lakkireddy@chelsio.com> References: Cc: kumaras@chelsio.com, nirranjan@chelsio.com, indranil@chelsio.com To: dev@dpdk.org Return-path: Received: from stargate.chelsio.com (stargate.chelsio.com [12.32.117.8]) by dpdk.org (Postfix) with ESMTP id 3CEAAAAAC for ; Sat, 10 Mar 2018 23:49:40 +0100 (CET) In-Reply-To: In-Reply-To: References: List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" From: Kumar Sanghvi Query firmware and initialize SGE parameters and enable queue allocation for VF. Calculate pcie channel and queue congestion management for VF. Signed-off-by: Kumar Sanghvi Signed-off-by: Rahul Lakkireddy --- drivers/net/cxgbe/base/adapter.h | 2 + drivers/net/cxgbe/base/common.h | 1 + drivers/net/cxgbe/base/t4_regs.h | 12 ++ drivers/net/cxgbe/base/t4fw_interface.h | 6 + drivers/net/cxgbe/base/t4vf_hw.c | 40 ++++++ drivers/net/cxgbe/cxgbe_ethdev.c | 13 +- drivers/net/cxgbe/cxgbe_main.c | 3 +- drivers/net/cxgbe/cxgbevf_main.c | 5 + drivers/net/cxgbe/sge.c | 239 +++++++++++++++++++++++++++++--- 9 files changed, 296 insertions(+), 25 deletions(-) diff --git a/drivers/net/cxgbe/base/adapter.h b/drivers/net/cxgbe/base/adapter.h index 6b2fc8b34..95752d1b4 100644 --- a/drivers/net/cxgbe/base/adapter.h +++ b/drivers/net/cxgbe/base/adapter.h @@ -249,6 +249,7 @@ struct sge_txq { unsigned int equeidx; /* last sent credit request */ unsigned int last_pidx; /* last pidx recorded by tx monitor */ unsigned int last_coal_idx;/* last coal-idx recorded by tx monitor */ + unsigned int abs_id; int db_disabled; /* doorbell state */ unsigned short db_pidx; /* doorbell producer index */ @@ -719,6 +720,7 @@ int t4_eth_xmit(struct sge_eth_txq *txq, struct rte_mbuf *mbuf, int t4_ethrx_handler(struct sge_rspq *q, const __be64 *rsp, const struct pkt_gl *gl); int t4_sge_init(struct adapter *adap); +int t4vf_sge_init(struct adapter *adap); int t4_sge_alloc_eth_txq(struct adapter *adap, struct sge_eth_txq *txq, struct rte_eth_dev *eth_dev, uint16_t queue_id, unsigned int iqid, int socket_id); diff --git a/drivers/net/cxgbe/base/common.h b/drivers/net/cxgbe/base/common.h index 3307827c8..d74903dfd 100644 --- a/drivers/net/cxgbe/base/common.h +++ b/drivers/net/cxgbe/base/common.h @@ -333,6 +333,7 @@ int t4vf_fw_reset(struct adapter *adap); int t4_fw_halt(struct adapter *adap, unsigned int mbox, int reset); int t4_fw_restart(struct adapter *adap, unsigned int mbox, int reset); int t4_fl_pkt_align(struct adapter *adap); +int t4vf_fl_pkt_align(struct adapter *adap, u32 sge_control, u32 sge_control2); int t4vf_get_vfres(struct adapter *adap); int t4_fixup_host_params_compat(struct adapter *adap, unsigned int page_size, unsigned int cache_line_size, diff --git a/drivers/net/cxgbe/base/t4_regs.h b/drivers/net/cxgbe/base/t4_regs.h index f553d146d..43d6a0c73 100644 --- a/drivers/net/cxgbe/base/t4_regs.h +++ b/drivers/net/cxgbe/base/t4_regs.h @@ -77,6 +77,7 @@ #define SGE_BASE_ADDR 0x1000 #define A_SGE_PF_KDOORBELL 0x0 +#define A_SGE_VF_KDOORBELL 0x0 #define S_QID 15 #define M_QID 0x1ffffU @@ -103,6 +104,9 @@ #define A_SGE_PF_GTS 0x4 +#define T4VF_SGE_BASE_ADDR 0x0000 +#define A_SGE_VF_GTS 0x4 + #define S_INGRESSQID 16 #define M_INGRESSQID 0xffffU #define V_INGRESSQID(x) ((x) << S_INGRESSQID) @@ -191,6 +195,8 @@ #define V_QUEUESPERPAGEPF0(x) ((x) << S_QUEUESPERPAGEPF0) #define G_QUEUESPERPAGEPF0(x) (((x) >> S_QUEUESPERPAGEPF0) & M_QUEUESPERPAGEPF0) +#define A_SGE_EGRESS_QUEUES_PER_PAGE_VF 0x1014 + #define S_ERR_CPL_EXCEED_IQE_SIZE 22 #define V_ERR_CPL_EXCEED_IQE_SIZE(x) ((x) << S_ERR_CPL_EXCEED_IQE_SIZE) #define F_ERR_CPL_EXCEED_IQE_SIZE V_ERR_CPL_EXCEED_IQE_SIZE(1U) @@ -280,6 +286,11 @@ #define A_SGE_CONM_CTRL 0x1094 +#define S_T6_EGRTHRESHOLDPACKING 16 +#define M_T6_EGRTHRESHOLDPACKING 0xffU +#define G_T6_EGRTHRESHOLDPACKING(x) (((x) >> S_T6_EGRTHRESHOLDPACKING) & \ + M_T6_EGRTHRESHOLDPACKING) + #define S_EGRTHRESHOLD 8 #define M_EGRTHRESHOLD 0x3fU #define V_EGRTHRESHOLD(x) ((x) << S_EGRTHRESHOLD) @@ -370,6 +381,7 @@ #define G_STATSOURCE_T5(x) (((x) >> S_STATSOURCE_T5) & M_STATSOURCE_T5) #define A_SGE_INGRESS_QUEUES_PER_PAGE_PF 0x10f4 +#define A_SGE_INGRESS_QUEUES_PER_PAGE_VF 0x10f8 #define A_SGE_CONTROL2 0x1124 diff --git a/drivers/net/cxgbe/base/t4fw_interface.h b/drivers/net/cxgbe/base/t4fw_interface.h index b40bfb960..6c5c97270 100644 --- a/drivers/net/cxgbe/base/t4fw_interface.h +++ b/drivers/net/cxgbe/base/t4fw_interface.h @@ -480,6 +480,7 @@ struct fw_caps_config_cmd { enum fw_params_mnem { FW_PARAMS_MNEM_DEV = 1, /* device params */ FW_PARAMS_MNEM_PFVF = 2, /* function params */ + FW_PARAMS_MNEM_REG = 3, /* limited register access */ FW_PARAMS_MNEM_DMAQ = 4, /* dma queue params */ }; @@ -887,6 +888,11 @@ struct fw_eq_eth_cmd { #define G_FW_EQ_ETH_CMD_EQID(x) \ (((x) >> S_FW_EQ_ETH_CMD_EQID) & M_FW_EQ_ETH_CMD_EQID) +#define S_FW_EQ_ETH_CMD_PHYSEQID 0 +#define M_FW_EQ_ETH_CMD_PHYSEQID 0xfffff +#define G_FW_EQ_ETH_CMD_PHYSEQID(x) \ + (((x) >> S_FW_EQ_ETH_CMD_PHYSEQID) & M_FW_EQ_ETH_CMD_PHYSEQID) + #define S_FW_EQ_ETH_CMD_FETCHRO 22 #define M_FW_EQ_ETH_CMD_FETCHRO 0x1 #define V_FW_EQ_ETH_CMD_FETCHRO(x) ((x) << S_FW_EQ_ETH_CMD_FETCHRO) diff --git a/drivers/net/cxgbe/base/t4vf_hw.c b/drivers/net/cxgbe/base/t4vf_hw.c index 6f222c4a1..8e48588b0 100644 --- a/drivers/net/cxgbe/base/t4vf_hw.c +++ b/drivers/net/cxgbe/base/t4vf_hw.c @@ -460,6 +460,46 @@ int t4vf_set_params(struct adapter *adapter, unsigned int nparams, return t4vf_wr_mbox(adapter, &cmd, sizeof(cmd), NULL); } +/** + * t4vf_fl_pkt_align - return the fl packet alignment + * @adapter: the adapter + * + * T4 has a single field to specify the packing and padding boundary. + * T5 onwards has separate fields for this and hence the alignment for + * next packet offset is maximum of these two. + */ +int t4vf_fl_pkt_align(struct adapter *adapter, u32 sge_control, + u32 sge_control2) +{ + unsigned int ingpadboundary, ingpackboundary, fl_align, ingpad_shift; + + /* T4 uses a single control field to specify both the PCIe Padding and + * Packing Boundary. T5 introduced the ability to specify these + * separately. The actual Ingress Packet Data alignment boundary + * within Packed Buffer Mode is the maximum of these two + * specifications. + */ + if (CHELSIO_CHIP_VERSION(adapter->params.chip) <= CHELSIO_T5) + ingpad_shift = X_INGPADBOUNDARY_SHIFT; + else + ingpad_shift = X_T6_INGPADBOUNDARY_SHIFT; + + ingpadboundary = 1 << (G_INGPADBOUNDARY(sge_control) + ingpad_shift); + + fl_align = ingpadboundary; + if (!is_t4(adapter->params.chip)) { + ingpackboundary = G_INGPACKBOUNDARY(sge_control2); + if (ingpackboundary == X_INGPACKBOUNDARY_16B) + ingpackboundary = 16; + else + ingpackboundary = 1 << (ingpackboundary + + X_INGPACKBOUNDARY_SHIFT); + + fl_align = max(ingpadboundary, ingpackboundary); + } + return fl_align; +} + unsigned int t4vf_get_pf_from_vf(struct adapter *adapter) { u32 whoami; diff --git a/drivers/net/cxgbe/cxgbe_ethdev.c b/drivers/net/cxgbe/cxgbe_ethdev.c index 7f523265d..16031f38d 100644 --- a/drivers/net/cxgbe/cxgbe_ethdev.c +++ b/drivers/net/cxgbe/cxgbe_ethdev.c @@ -481,9 +481,8 @@ int cxgbe_dev_tx_queue_setup(struct rte_eth_dev *eth_dev, err = t4_sge_alloc_eth_txq(adapter, txq, eth_dev, queue_idx, s->fw_evtq.cntxt_id, socket_id); - dev_debug(adapter, "%s: txq->q.cntxt_id= %d err = %d\n", - __func__, txq->q.cntxt_id, err); - + dev_debug(adapter, "%s: txq->q.cntxt_id= %u txq->q.abs_id= %u err = %d\n", + __func__, txq->q.cntxt_id, txq->q.abs_id, err); return err; } @@ -610,11 +609,13 @@ int cxgbe_dev_rx_queue_setup(struct rte_eth_dev *eth_dev, err = t4_sge_alloc_rxq(adapter, &rxq->rspq, false, eth_dev, msi_idx, &rxq->fl, t4_ethrx_handler, - t4_get_tp_ch_map(adapter, pi->tx_chan), mp, + is_pf4(adapter) ? + t4_get_tp_ch_map(adapter, pi->tx_chan) : 0, mp, queue_idx, socket_id); - dev_debug(adapter, "%s: err = %d; port_id = %d; cntxt_id = %u\n", - __func__, err, pi->port_id, rxq->rspq.cntxt_id); + dev_debug(adapter, "%s: err = %d; port_id = %d; cntxt_id = %u; abs_id = %u\n", + __func__, err, pi->port_id, rxq->rspq.cntxt_id, + rxq->rspq.abs_id); return err; } diff --git a/drivers/net/cxgbe/cxgbe_main.c b/drivers/net/cxgbe/cxgbe_main.c index 8d78ad427..d9e772717 100644 --- a/drivers/net/cxgbe/cxgbe_main.c +++ b/drivers/net/cxgbe/cxgbe_main.c @@ -1064,7 +1064,8 @@ int setup_rss(struct port_info *pi) static void enable_rx(struct adapter *adap, struct sge_rspq *q) { /* 0-increment GTS to start the timer and enable interrupts */ - t4_write_reg(adap, MYPF_REG(A_SGE_PF_GTS), + t4_write_reg(adap, is_pf4(adap) ? MYPF_REG(A_SGE_PF_GTS) : + T4VF_SGE_BASE_ADDR + A_SGE_VF_GTS, V_SEINTARM(q->intr_params) | V_INGRESSQID(q->cntxt_id)); } diff --git a/drivers/net/cxgbe/cxgbevf_main.c b/drivers/net/cxgbe/cxgbevf_main.c index 0624267c7..f4d0f4de5 100644 --- a/drivers/net/cxgbe/cxgbevf_main.c +++ b/drivers/net/cxgbe/cxgbevf_main.c @@ -108,6 +108,11 @@ static int adap_init0vf(struct adapter *adapter) } adapter->pf = t4vf_get_pf_from_vf(adapter); + err = t4vf_sge_init(adapter); + if (err) { + dev_err(adapter->pdev_dev, "error in sge init\n"); + return err; + } /* If we're running on newer firmware, let it know that we're * prepared to deal with encapsulated CPL messages. Older diff --git a/drivers/net/cxgbe/sge.c b/drivers/net/cxgbe/sge.c index 6ff8bc46b..aba1a49f3 100644 --- a/drivers/net/cxgbe/sge.c +++ b/drivers/net/cxgbe/sge.c @@ -1689,6 +1689,7 @@ int t4_sge_alloc_rxq(struct adapter *adap, struct sge_rspq *iq, bool fwevtq, char z_name[RTE_MEMZONE_NAMESIZE]; char z_name_sw[RTE_MEMZONE_NAMESIZE]; unsigned int nb_refill; + u8 pciechan; /* Size needs to be multiple of 16, including status entry. */ iq->size = cxgbe_roundup(iq->size, 16); @@ -1706,8 +1707,19 @@ int t4_sge_alloc_rxq(struct adapter *adap, struct sge_rspq *iq, bool fwevtq, memset(&c, 0, sizeof(c)); c.op_to_vfn = htonl(V_FW_CMD_OP(FW_IQ_CMD) | F_FW_CMD_REQUEST | - F_FW_CMD_WRITE | F_FW_CMD_EXEC | - V_FW_IQ_CMD_PFN(adap->pf) | V_FW_IQ_CMD_VFN(0)); + F_FW_CMD_WRITE | F_FW_CMD_EXEC); + + if (is_pf4(adap)) { + pciechan = cong > 0 ? cxgbe_ffs(cong) - 1 : pi->tx_chan; + c.op_to_vfn |= htonl(V_FW_IQ_CMD_PFN(adap->pf) | + V_FW_IQ_CMD_VFN(0)); + if (cong >= 0) + c.iqns_to_fl0congen = htonl(F_FW_IQ_CMD_IQFLINTCONGEN | + F_FW_IQ_CMD_IQRO); + } else { + pciechan = pi->port_id; + } + c.alloc_to_len16 = htonl(F_FW_IQ_CMD_ALLOC | F_FW_IQ_CMD_IQSTART | (sizeof(c) / 16)); c.type_to_iqandstindex = @@ -1719,16 +1731,12 @@ int t4_sge_alloc_rxq(struct adapter *adap, struct sge_rspq *iq, bool fwevtq, V_FW_IQ_CMD_IQANDSTINDEX(intr_idx >= 0 ? intr_idx : -intr_idx - 1)); c.iqdroprss_to_iqesize = - htons(V_FW_IQ_CMD_IQPCIECH(cong > 0 ? cxgbe_ffs(cong) - 1 : - pi->tx_chan) | + htons(V_FW_IQ_CMD_IQPCIECH(pciechan) | F_FW_IQ_CMD_IQGTSMODE | V_FW_IQ_CMD_IQINTCNTTHRESH(iq->pktcnt_idx) | V_FW_IQ_CMD_IQESIZE(ilog2(iq->iqe_len) - 4)); c.iqsize = htons(iq->size); c.iqaddr = cpu_to_be64(iq->phys_addr); - if (cong >= 0) - c.iqns_to_fl0congen = htonl(F_FW_IQ_CMD_IQFLINTCONGEN | - F_FW_IQ_CMD_IQRO); if (fl) { struct sge_eth_rxq *rxq = container_of(fl, struct sge_eth_rxq, @@ -1768,7 +1776,7 @@ int t4_sge_alloc_rxq(struct adapter *adap, struct sge_rspq *iq, bool fwevtq, 0 : F_FW_IQ_CMD_FL0PACKEN) | F_FW_IQ_CMD_FL0FETCHRO | F_FW_IQ_CMD_FL0DATARO | F_FW_IQ_CMD_FL0PADEN); - if (cong >= 0) + if (is_pf4(adap) && cong >= 0) c.iqns_to_fl0congen |= htonl(V_FW_IQ_CMD_FL0CNGCHMAP(cong) | F_FW_IQ_CMD_FL0CONGCIF | @@ -1789,7 +1797,10 @@ int t4_sge_alloc_rxq(struct adapter *adap, struct sge_rspq *iq, bool fwevtq, c.fl0addr = cpu_to_be64(fl->addr); } - ret = t4_wr_mbox(adap, adap->mbox, &c, sizeof(c), &c); + if (is_pf4(adap)) + ret = t4_wr_mbox(adap, adap->mbox, &c, sizeof(c), &c); + else + ret = t4vf_wr_mbox(adap, &c, sizeof(c), &c); if (ret) goto err; @@ -1806,7 +1817,7 @@ int t4_sge_alloc_rxq(struct adapter *adap, struct sge_rspq *iq, bool fwevtq, iq->stat = (void *)&iq->desc[iq->size * 8]; iq->eth_dev = eth_dev; iq->handler = hnd; - iq->port_id = pi->port_id; + iq->port_id = pi->pidx; iq->mb_pool = mp; /* set offset to -1 to distinguish ingress queues without FL */ @@ -1846,7 +1857,7 @@ int t4_sge_alloc_rxq(struct adapter *adap, struct sge_rspq *iq, bool fwevtq, * a lot easier to fix in one place ... For now we do something very * simple (and hopefully less wrong). */ - if (!is_t4(adap->params.chip) && cong >= 0) { + if (is_pf4(adap) && !is_t4(adap->params.chip) && cong >= 0) { u32 param, val; int i; @@ -1893,9 +1904,11 @@ int t4_sge_alloc_rxq(struct adapter *adap, struct sge_rspq *iq, bool fwevtq, return ret; } -static void init_txq(struct adapter *adap, struct sge_txq *q, unsigned int id) +static void init_txq(struct adapter *adap, struct sge_txq *q, unsigned int id, + unsigned int abs_id) { q->cntxt_id = id; + q->abs_id = abs_id; q->bar2_addr = bar2_address(adap, q->cntxt_id, T4_BAR2_QTYPE_EGRESS, &q->bar2_qid); q->cidx = 0; @@ -1943,6 +1956,7 @@ int t4_sge_alloc_eth_txq(struct adapter *adap, struct sge_eth_txq *txq, struct port_info *pi = (struct port_info *)(eth_dev->data->dev_private); char z_name[RTE_MEMZONE_NAMESIZE]; char z_name_sw[RTE_MEMZONE_NAMESIZE]; + u8 pciechan; /* Add status entries */ nentries = txq->q.size + s->stat_len / sizeof(struct tx_desc); @@ -1961,16 +1975,22 @@ int t4_sge_alloc_eth_txq(struct adapter *adap, struct sge_eth_txq *txq, memset(&c, 0, sizeof(c)); c.op_to_vfn = htonl(V_FW_CMD_OP(FW_EQ_ETH_CMD) | F_FW_CMD_REQUEST | - F_FW_CMD_WRITE | F_FW_CMD_EXEC | - V_FW_EQ_ETH_CMD_PFN(adap->pf) | - V_FW_EQ_ETH_CMD_VFN(0)); + F_FW_CMD_WRITE | F_FW_CMD_EXEC); + if (is_pf4(adap)) { + pciechan = pi->tx_chan; + c.op_to_vfn |= htonl(V_FW_EQ_ETH_CMD_PFN(adap->pf) | + V_FW_EQ_ETH_CMD_VFN(0)); + } else { + pciechan = pi->port_id; + } + c.alloc_to_len16 = htonl(F_FW_EQ_ETH_CMD_ALLOC | F_FW_EQ_ETH_CMD_EQSTART | (sizeof(c) / 16)); c.autoequiqe_to_viid = htonl(F_FW_EQ_ETH_CMD_AUTOEQUEQE | V_FW_EQ_ETH_CMD_VIID(pi->viid)); c.fetchszm_to_iqid = htonl(V_FW_EQ_ETH_CMD_HOSTFCMODE(X_HOSTFCMODE_NONE) | - V_FW_EQ_ETH_CMD_PCIECHN(pi->tx_chan) | + V_FW_EQ_ETH_CMD_PCIECHN(pciechan) | F_FW_EQ_ETH_CMD_FETCHRO | V_FW_EQ_ETH_CMD_IQID(iqid)); c.dcaen_to_eqsize = htonl(V_FW_EQ_ETH_CMD_FBMIN(X_FETCHBURSTMIN_64B) | @@ -1978,7 +1998,10 @@ int t4_sge_alloc_eth_txq(struct adapter *adap, struct sge_eth_txq *txq, V_FW_EQ_ETH_CMD_EQSIZE(nentries)); c.eqaddr = rte_cpu_to_be_64(txq->q.phys_addr); - ret = t4_wr_mbox(adap, adap->mbox, &c, sizeof(c), &c); + if (is_pf4(adap)) + ret = t4_wr_mbox(adap, adap->mbox, &c, sizeof(c), &c); + else + ret = t4vf_wr_mbox(adap, &c, sizeof(c), &c); if (ret) { rte_free(txq->q.sdesc); txq->q.sdesc = NULL; @@ -1986,7 +2009,8 @@ int t4_sge_alloc_eth_txq(struct adapter *adap, struct sge_eth_txq *txq, return ret; } - init_txq(adap, &txq->q, G_FW_EQ_ETH_CMD_EQID(ntohl(c.eqid_pkd))); + init_txq(adap, &txq->q, G_FW_EQ_ETH_CMD_EQID(ntohl(c.eqid_pkd)), + G_FW_EQ_ETH_CMD_PHYSEQID(ntohl(c.physeqid_pkd))); txq->stats.tso = 0; txq->stats.pkts = 0; txq->stats.tx_cso = 0; @@ -2281,3 +2305,182 @@ int t4_sge_init(struct adapter *adap) return 0; } + +int t4vf_sge_init(struct adapter *adap) +{ + struct sge_params *sge_params = &adap->params.sge; + u32 sge_ingress_queues_per_page; + u32 sge_egress_queues_per_page; + u32 sge_control, sge_control2; + u32 fl_small_pg, fl_large_pg; + u32 sge_ingress_rx_threshold; + u32 sge_timer_value_0_and_1; + u32 sge_timer_value_2_and_3; + u32 sge_timer_value_4_and_5; + u32 sge_congestion_control; + struct sge *s = &adap->sge; + unsigned int s_hps, s_qpp; + u32 sge_host_page_size; + u32 params[7], vals[7]; + int v; + + /* query basic params from fw */ + params[0] = (V_FW_PARAMS_MNEM(FW_PARAMS_MNEM_REG) | + V_FW_PARAMS_PARAM_XYZ(A_SGE_CONTROL)); + params[1] = (V_FW_PARAMS_MNEM(FW_PARAMS_MNEM_REG) | + V_FW_PARAMS_PARAM_XYZ(A_SGE_HOST_PAGE_SIZE)); + params[2] = (V_FW_PARAMS_MNEM(FW_PARAMS_MNEM_REG) | + V_FW_PARAMS_PARAM_XYZ(A_SGE_FL_BUFFER_SIZE0)); + params[3] = (V_FW_PARAMS_MNEM(FW_PARAMS_MNEM_REG) | + V_FW_PARAMS_PARAM_XYZ(A_SGE_FL_BUFFER_SIZE1)); + params[4] = (V_FW_PARAMS_MNEM(FW_PARAMS_MNEM_REG) | + V_FW_PARAMS_PARAM_XYZ(A_SGE_TIMER_VALUE_0_AND_1)); + params[5] = (V_FW_PARAMS_MNEM(FW_PARAMS_MNEM_REG) | + V_FW_PARAMS_PARAM_XYZ(A_SGE_TIMER_VALUE_2_AND_3)); + params[6] = (V_FW_PARAMS_MNEM(FW_PARAMS_MNEM_REG) | + V_FW_PARAMS_PARAM_XYZ(A_SGE_TIMER_VALUE_4_AND_5)); + v = t4vf_query_params(adap, 7, params, vals); + if (v != FW_SUCCESS) + return v; + + sge_control = vals[0]; + sge_host_page_size = vals[1]; + fl_small_pg = vals[2]; + fl_large_pg = vals[3]; + sge_timer_value_0_and_1 = vals[4]; + sge_timer_value_2_and_3 = vals[5]; + sge_timer_value_4_and_5 = vals[6]; + + /* + * Start by vetting the basic SGE parameters which have been set up by + * the Physical Function Driver. + */ + + /* We only bother using the Large Page logic if the Large Page Buffer + * is larger than our Page Size Buffer. + */ + if (fl_large_pg <= fl_small_pg) + fl_large_pg = 0; + + /* The Page Size Buffer must be exactly equal to our Page Size and the + * Large Page Size Buffer should be 0 (per above) or a power of 2. + */ + if (fl_small_pg != CXGBE_PAGE_SIZE || + (fl_large_pg & (fl_large_pg - 1)) != 0) { + dev_err(adapter->pdev_dev, "bad SGE FL buffer sizes [%d, %d]\n", + fl_small_pg, fl_large_pg); + return -EINVAL; + } + + if ((sge_control & F_RXPKTCPLMODE) != + V_RXPKTCPLMODE(X_RXPKTCPLMODE_SPLIT)) { + dev_err(adapter->pdev_dev, "bad SGE CPL MODE\n"); + return -EINVAL; + } + + + /* Grab ingress packing boundary from SGE_CONTROL2 for */ + params[0] = (V_FW_PARAMS_MNEM(FW_PARAMS_MNEM_REG) | + V_FW_PARAMS_PARAM_XYZ(A_SGE_CONTROL2)); + v = t4vf_query_params(adap, 1, params, vals); + if (v != FW_SUCCESS) { + dev_err(adapter, "Unable to get SGE Control2; " + "probably old firmware.\n"); + return v; + } + sge_control2 = vals[0]; + + params[0] = (V_FW_PARAMS_MNEM(FW_PARAMS_MNEM_REG) | + V_FW_PARAMS_PARAM_XYZ(A_SGE_INGRESS_RX_THRESHOLD)); + params[1] = (V_FW_PARAMS_MNEM(FW_PARAMS_MNEM_REG) | + V_FW_PARAMS_PARAM_XYZ(A_SGE_CONM_CTRL)); + v = t4vf_query_params(adap, 2, params, vals); + if (v != FW_SUCCESS) + return v; + sge_ingress_rx_threshold = vals[0]; + sge_congestion_control = vals[1]; + params[0] = (V_FW_PARAMS_MNEM(FW_PARAMS_MNEM_REG) | + V_FW_PARAMS_PARAM_XYZ(A_SGE_EGRESS_QUEUES_PER_PAGE_VF)); + params[1] = (V_FW_PARAMS_MNEM(FW_PARAMS_MNEM_REG) | + V_FW_PARAMS_PARAM_XYZ(A_SGE_INGRESS_QUEUES_PER_PAGE_VF)); + v = t4vf_query_params(adap, 2, params, vals); + if (v != FW_SUCCESS) { + dev_warn(adap, "Unable to get VF SGE Queues/Page; " + "probably old firmware.\n"); + return v; + } + sge_egress_queues_per_page = vals[0]; + sge_ingress_queues_per_page = vals[1]; + + /* + * We need the Queues/Page for our VF. This is based on the + * PF from which we're instantiated and is indexed in the + * register we just read. + */ + s_hps = (S_HOSTPAGESIZEPF0 + + (S_HOSTPAGESIZEPF1 - S_HOSTPAGESIZEPF0) * adap->pf); + sge_params->hps = + ((sge_host_page_size >> s_hps) & M_HOSTPAGESIZEPF0); + + s_qpp = (S_QUEUESPERPAGEPF0 + + (S_QUEUESPERPAGEPF1 - S_QUEUESPERPAGEPF0) * adap->pf); + sge_params->eq_qpp = + ((sge_egress_queues_per_page >> s_qpp) + & M_QUEUESPERPAGEPF0); + sge_params->iq_qpp = + ((sge_ingress_queues_per_page >> s_qpp) + & M_QUEUESPERPAGEPF0); + + /* + * Now translate the queried parameters into our internal forms. + */ + if (fl_large_pg) + s->fl_pg_order = ilog2(fl_large_pg) - PAGE_SHIFT; + s->stat_len = ((sge_control & F_EGRSTATUSPAGESIZE) + ? 128 : 64); + s->pktshift = G_PKTSHIFT(sge_control); + s->fl_align = t4vf_fl_pkt_align(adap, sge_control, sge_control2); + + /* + * A FL with <= fl_starve_thres buffers is starving and a periodic + * timer will attempt to refill it. This needs to be larger than the + * SGE's Egress Congestion Threshold. If it isn't, then we can get + * stuck waiting for new packets while the SGE is waiting for us to + * give it more Free List entries. (Note that the SGE's Egress + * Congestion Threshold is in units of 2 Free List pointers.) + */ + switch (CHELSIO_CHIP_VERSION(adap->params.chip)) { + case CHELSIO_T5: + s->fl_starve_thres = + G_EGRTHRESHOLDPACKING(sge_congestion_control); + break; + case CHELSIO_T6: + default: + s->fl_starve_thres = + G_T6_EGRTHRESHOLDPACKING(sge_congestion_control); + break; + } + s->fl_starve_thres = s->fl_starve_thres * 2 + 1; + + /* + * Save RX interrupt holdoff timer values and counter + * threshold values from the SGE parameters. + */ + s->timer_val[0] = core_ticks_to_us(adap, + G_TIMERVALUE0(sge_timer_value_0_and_1)); + s->timer_val[1] = core_ticks_to_us(adap, + G_TIMERVALUE1(sge_timer_value_0_and_1)); + s->timer_val[2] = core_ticks_to_us(adap, + G_TIMERVALUE2(sge_timer_value_2_and_3)); + s->timer_val[3] = core_ticks_to_us(adap, + G_TIMERVALUE3(sge_timer_value_2_and_3)); + s->timer_val[4] = core_ticks_to_us(adap, + G_TIMERVALUE4(sge_timer_value_4_and_5)); + s->timer_val[5] = core_ticks_to_us(adap, + G_TIMERVALUE5(sge_timer_value_4_and_5)); + s->counter_val[0] = G_THRESHOLD_0(sge_ingress_rx_threshold); + s->counter_val[1] = G_THRESHOLD_1(sge_ingress_rx_threshold); + s->counter_val[2] = G_THRESHOLD_2(sge_ingress_rx_threshold); + s->counter_val[3] = G_THRESHOLD_3(sge_ingress_rx_threshold); + return 0; +} -- 2.14.1