From: Shagun Agrawal Date: Fri, 8 Jun 2018 17:58:13 +0000 (+0530) Subject: net/cxgbe: add control queue to communicate filter requests X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=3a3aaabc7c77;p=dpdk.git net/cxgbe: add control queue to communicate filter requests Add control queue to communicate filter creation/deletion requests with firmware. This API will be used by subsequent patches. Signed-off-by: Shagun Agrawal Signed-off-by: Kumar Sanghvi Signed-off-by: Rahul Lakkireddy --- diff --git a/drivers/net/cxgbe/base/adapter.h b/drivers/net/cxgbe/base/adapter.h index f3434d28a0..9a66a4a99d 100644 --- a/drivers/net/cxgbe/base/adapter.h +++ b/drivers/net/cxgbe/base/adapter.h @@ -19,6 +19,7 @@ enum { MAX_ETH_QSETS = 64, /* # of Ethernet Tx/Rx queue sets */ + MAX_CTRL_QUEUES = NCHAN, /* # of control Tx queues */ }; struct adapter; @@ -256,10 +257,20 @@ struct sge_eth_txq { /* state for an SGE Ethernet Tx queue */ unsigned int flags; /* flags for state of the queue */ } __rte_cache_aligned; +struct sge_ctrl_txq { /* State for an SGE control Tx queue */ + struct sge_txq q; /* txq */ + struct adapter *adapter; /* adapter associated with this queue */ + rte_spinlock_t ctrlq_lock; /* control queue lock */ + u8 full; /* the Tx ring is full */ + u64 txp; /* number of transmits */ + struct rte_mempool *mb_pool; /* mempool to generate ctrl pkts */ +} __rte_cache_aligned; + struct sge { struct sge_eth_txq ethtxq[MAX_ETH_QSETS]; struct sge_eth_rxq ethrxq[MAX_ETH_QSETS]; struct sge_rspq fw_evtq __rte_cache_aligned; + struct sge_ctrl_txq ctrlq[MAX_CTRL_QUEUES]; u16 max_ethqsets; /* # of available Ethernet queue sets */ u32 stat_len; /* length of status page at ring end */ @@ -720,6 +731,7 @@ void t4_sge_tx_monitor_start(struct adapter *adap); void t4_sge_tx_monitor_stop(struct adapter *adap); int t4_eth_xmit(struct sge_eth_txq *txq, struct rte_mbuf *mbuf, uint16_t nb_pkts); +int t4_mgmt_tx(struct sge_ctrl_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); @@ -727,6 +739,9 @@ 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); +int t4_sge_alloc_ctrl_txq(struct adapter *adap, struct sge_ctrl_txq *txq, + struct rte_eth_dev *eth_dev, uint16_t queue_id, + unsigned int iqid, int socket_id); int t4_sge_alloc_rxq(struct adapter *adap, struct sge_rspq *rspq, bool fwevtq, struct rte_eth_dev *eth_dev, int intr_idx, struct sge_fl *fl, rspq_handler_t handler, diff --git a/drivers/net/cxgbe/base/common.h b/drivers/net/cxgbe/base/common.h index 155a302882..c80304b243 100644 --- a/drivers/net/cxgbe/base/common.h +++ b/drivers/net/cxgbe/base/common.h @@ -378,6 +378,8 @@ int t4_iq_free(struct adapter *adap, unsigned int mbox, unsigned int pf, unsigned int fl0id, unsigned int fl1id); int t4_eth_eq_free(struct adapter *adap, unsigned int mbox, unsigned int pf, unsigned int vf, unsigned int eqid); +int t4_ctrl_eq_free(struct adapter *adap, unsigned int mbox, unsigned int pf, + unsigned int vf, unsigned int eqid); static inline unsigned int core_ticks_per_usec(const struct adapter *adap) { diff --git a/drivers/net/cxgbe/base/t4_hw.c b/drivers/net/cxgbe/base/t4_hw.c index e5ef73b674..c146c911eb 100644 --- a/drivers/net/cxgbe/base/t4_hw.c +++ b/drivers/net/cxgbe/base/t4_hw.c @@ -4490,6 +4490,31 @@ static void t4_handle_get_port_info(struct port_info *pi, const __be64 *rpl) } } +/** + * t4_ctrl_eq_free - free a control egress queue + * @adap: the adapter + * @mbox: mailbox to use for the FW command + * @pf: the PF owning the queue + * @vf: the VF owning the queue + * @eqid: egress queue id + * + * Frees a control egress queue. + */ +int t4_ctrl_eq_free(struct adapter *adap, unsigned int mbox, unsigned int pf, + unsigned int vf, unsigned int eqid) +{ + struct fw_eq_ctrl_cmd c; + + memset(&c, 0, sizeof(c)); + c.op_to_vfn = cpu_to_be32(V_FW_CMD_OP(FW_EQ_CTRL_CMD) | + F_FW_CMD_REQUEST | F_FW_CMD_EXEC | + V_FW_EQ_CTRL_CMD_PFN(pf) | + V_FW_EQ_CTRL_CMD_VFN(vf)); + c.alloc_to_len16 = cpu_to_be32(F_FW_EQ_CTRL_CMD_FREE | FW_LEN16(c)); + c.cmpliqid_eqid = cpu_to_be32(V_FW_EQ_CTRL_CMD_EQID(eqid)); + return t4_wr_mbox(adap, mbox, &c, sizeof(c), NULL); +} + /** * t4_handle_fw_rpl - process a FW reply message * @adap: the adapter diff --git a/drivers/net/cxgbe/base/t4fw_interface.h b/drivers/net/cxgbe/base/t4fw_interface.h index 95b2aec482..44b6f6dac9 100644 --- a/drivers/net/cxgbe/base/t4fw_interface.h +++ b/drivers/net/cxgbe/base/t4fw_interface.h @@ -178,6 +178,7 @@ enum fw_cmd_opcodes { FW_PFVF_CMD = 0x09, FW_IQ_CMD = 0x10, FW_EQ_ETH_CMD = 0x12, + FW_EQ_CTRL_CMD = 0x13, FW_VI_CMD = 0x14, FW_VI_MAC_CMD = 0x15, FW_VI_RXMODE_CMD = 0x16, @@ -960,6 +961,75 @@ struct fw_eq_eth_cmd { #define G_FW_EQ_ETH_CMD_VIID(x) \ (((x) >> S_FW_EQ_ETH_CMD_VIID) & M_FW_EQ_ETH_CMD_VIID) +struct fw_eq_ctrl_cmd { + __be32 op_to_vfn; + __be32 alloc_to_len16; + __be32 cmpliqid_eqid; + __be32 physeqid_pkd; + __be32 fetchszm_to_iqid; + __be32 dcaen_to_eqsize; + __be64 eqaddr; +}; + +#define S_FW_EQ_CTRL_CMD_PFN 8 +#define V_FW_EQ_CTRL_CMD_PFN(x) ((x) << S_FW_EQ_CTRL_CMD_PFN) + +#define S_FW_EQ_CTRL_CMD_VFN 0 +#define V_FW_EQ_CTRL_CMD_VFN(x) ((x) << S_FW_EQ_CTRL_CMD_VFN) + +#define S_FW_EQ_CTRL_CMD_ALLOC 31 +#define V_FW_EQ_CTRL_CMD_ALLOC(x) ((x) << S_FW_EQ_CTRL_CMD_ALLOC) +#define F_FW_EQ_CTRL_CMD_ALLOC V_FW_EQ_CTRL_CMD_ALLOC(1U) + +#define S_FW_EQ_CTRL_CMD_FREE 30 +#define V_FW_EQ_CTRL_CMD_FREE(x) ((x) << S_FW_EQ_CTRL_CMD_FREE) +#define F_FW_EQ_CTRL_CMD_FREE V_FW_EQ_CTRL_CMD_FREE(1U) + +#define S_FW_EQ_CTRL_CMD_EQSTART 28 +#define V_FW_EQ_CTRL_CMD_EQSTART(x) ((x) << S_FW_EQ_CTRL_CMD_EQSTART) +#define F_FW_EQ_CTRL_CMD_EQSTART V_FW_EQ_CTRL_CMD_EQSTART(1U) + +#define S_FW_EQ_CTRL_CMD_CMPLIQID 20 +#define V_FW_EQ_CTRL_CMD_CMPLIQID(x) ((x) << S_FW_EQ_CTRL_CMD_CMPLIQID) + +#define S_FW_EQ_CTRL_CMD_EQID 0 +#define M_FW_EQ_CTRL_CMD_EQID 0xfffff +#define V_FW_EQ_CTRL_CMD_EQID(x) ((x) << S_FW_EQ_CTRL_CMD_EQID) +#define G_FW_EQ_CTRL_CMD_EQID(x) \ + (((x) >> S_FW_EQ_CTRL_CMD_EQID) & M_FW_EQ_CTRL_CMD_EQID) + +#define S_FW_EQ_CTRL_CMD_PHYSEQID 0 +#define M_FW_EQ_CTRL_CMD_PHYSEQID 0xfffff +#define V_FW_EQ_CTRL_CMD_PHYSEQID(x) ((x) << S_FW_EQ_CTRL_CMD_PHYSEQID) +#define G_FW_EQ_CTRL_CMD_PHYSEQID(x) \ + (((x) >> S_FW_EQ_CTRL_CMD_PHYSEQID) & M_FW_EQ_CTRL_CMD_PHYSEQID) + +#define S_FW_EQ_CTRL_CMD_FETCHRO 22 +#define V_FW_EQ_CTRL_CMD_FETCHRO(x) ((x) << S_FW_EQ_CTRL_CMD_FETCHRO) +#define F_FW_EQ_CTRL_CMD_FETCHRO V_FW_EQ_CTRL_CMD_FETCHRO(1U) + +#define S_FW_EQ_CTRL_CMD_HOSTFCMODE 20 +#define M_FW_EQ_CTRL_CMD_HOSTFCMODE 0x3 +#define V_FW_EQ_CTRL_CMD_HOSTFCMODE(x) ((x) << S_FW_EQ_CTRL_CMD_HOSTFCMODE) + +#define S_FW_EQ_CTRL_CMD_PCIECHN 16 +#define V_FW_EQ_CTRL_CMD_PCIECHN(x) ((x) << S_FW_EQ_CTRL_CMD_PCIECHN) + +#define S_FW_EQ_CTRL_CMD_IQID 0 +#define V_FW_EQ_CTRL_CMD_IQID(x) ((x) << S_FW_EQ_CTRL_CMD_IQID) + +#define S_FW_EQ_CTRL_CMD_FBMIN 23 +#define V_FW_EQ_CTRL_CMD_FBMIN(x) ((x) << S_FW_EQ_CTRL_CMD_FBMIN) + +#define S_FW_EQ_CTRL_CMD_FBMAX 20 +#define V_FW_EQ_CTRL_CMD_FBMAX(x) ((x) << S_FW_EQ_CTRL_CMD_FBMAX) + +#define S_FW_EQ_CTRL_CMD_CIDXFTHRESH 16 +#define V_FW_EQ_CTRL_CMD_CIDXFTHRESH(x) ((x) << S_FW_EQ_CTRL_CMD_CIDXFTHRESH) + +#define S_FW_EQ_CTRL_CMD_EQSIZE 0 +#define V_FW_EQ_CTRL_CMD_EQSIZE(x) ((x) << S_FW_EQ_CTRL_CMD_EQSIZE) + enum fw_vi_func { FW_VI_FUNC_ETH, }; diff --git a/drivers/net/cxgbe/cxgbe.h b/drivers/net/cxgbe/cxgbe.h index e4a525607c..44f5934d18 100644 --- a/drivers/net/cxgbe/cxgbe.h +++ b/drivers/net/cxgbe/cxgbe.h @@ -42,6 +42,7 @@ int link_start(struct port_info *pi); void init_rspq(struct adapter *adap, struct sge_rspq *q, unsigned int us, unsigned int cnt, unsigned int size, unsigned int iqe_size); int setup_sge_fwevtq(struct adapter *adapter); +int setup_sge_ctrl_txq(struct adapter *adapter); void cfg_queues(struct rte_eth_dev *eth_dev); int cfg_queue_count(struct rte_eth_dev *eth_dev); int init_rss(struct adapter *adap); diff --git a/drivers/net/cxgbe/cxgbe_ethdev.c b/drivers/net/cxgbe/cxgbe_ethdev.c index 1adb8e41fe..713dc8fae0 100644 --- a/drivers/net/cxgbe/cxgbe_ethdev.c +++ b/drivers/net/cxgbe/cxgbe_ethdev.c @@ -365,6 +365,9 @@ int cxgbe_dev_configure(struct rte_eth_dev *eth_dev) if (err) return err; adapter->flags |= FW_QUEUE_BOUND; + err = setup_sge_ctrl_txq(adapter); + if (err) + return err; } err = cfg_queue_count(eth_dev); diff --git a/drivers/net/cxgbe/cxgbe_main.c b/drivers/net/cxgbe/cxgbe_main.c index 9880257d2c..5416800de5 100644 --- a/drivers/net/cxgbe/cxgbe_main.c +++ b/drivers/net/cxgbe/cxgbe_main.c @@ -94,6 +94,47 @@ out: return 0; } +/** + * Setup sge control queues to pass control information. + */ +int setup_sge_ctrl_txq(struct adapter *adapter) +{ + struct sge *s = &adapter->sge; + int err = 0, i = 0; + + for_each_port(adapter, i) { + char name[RTE_ETH_NAME_MAX_LEN]; + struct sge_ctrl_txq *q = &s->ctrlq[i]; + + q->q.size = 1024; + err = t4_sge_alloc_ctrl_txq(adapter, q, + adapter->eth_dev, i, + s->fw_evtq.cntxt_id, + rte_socket_id()); + if (err) { + dev_err(adapter, "Failed to alloc ctrl txq. Err: %d", + err); + goto out; + } + snprintf(name, sizeof(name), "cxgbe_ctrl_pool_%d", i); + q->mb_pool = rte_pktmbuf_pool_create(name, s->ctrlq[i].q.size, + RTE_CACHE_LINE_SIZE, + RTE_MBUF_PRIV_ALIGN, + RTE_MBUF_DEFAULT_BUF_SIZE, + SOCKET_ID_ANY); + if (!q->mb_pool) { + dev_err(adapter, "Can't create ctrl pool for port: %d", + i); + err = -ENOMEM; + goto out; + } + } + return 0; +out: + t4_free_sge_resources(adapter); + return err; +} + int setup_sge_fwevtq(struct adapter *adapter) { struct sge *s = &adapter->sge; diff --git a/drivers/net/cxgbe/sge.c b/drivers/net/cxgbe/sge.c index b5d3611daa..357b4856d3 100644 --- a/drivers/net/cxgbe/sge.c +++ b/drivers/net/cxgbe/sge.c @@ -54,6 +54,11 @@ static inline void ship_tx_pkt_coalesce_wr(struct adapter *adap, */ #define MAX_IMM_TX_PKT_LEN 256 +/* + * Max size of a WR sent through a control Tx queue. + */ +#define MAX_CTRL_WR_LEN SGE_MAX_WR_LEN + /* * Rx buffer sizes for "usembufs" Free List buffers (one ingress packet * per mbuf buffer). We currently only support two sizes for 1500- and @@ -1299,6 +1304,126 @@ out_free: return 0; } +/** + * reclaim_completed_tx_imm - reclaim completed control-queue Tx descs + * @q: the SGE control Tx queue + * + * This is a variant of reclaim_completed_tx() that is used for Tx queues + * that send only immediate data (presently just the control queues) and + * thus do not have any mbufs to release. + */ +static inline void reclaim_completed_tx_imm(struct sge_txq *q) +{ + int hw_cidx = ntohs(q->stat->cidx); + int reclaim = hw_cidx - q->cidx; + + if (reclaim < 0) + reclaim += q->size; + + q->in_use -= reclaim; + q->cidx = hw_cidx; +} + +/** + * is_imm - check whether a packet can be sent as immediate data + * @mbuf: the packet + * + * Returns true if a packet can be sent as a WR with immediate data. + */ +static inline int is_imm(const struct rte_mbuf *mbuf) +{ + return mbuf->pkt_len <= MAX_CTRL_WR_LEN; +} + +/** + * inline_tx_mbuf: inline a packet's data into TX descriptors + * @q: the TX queue where the packet will be inlined + * @from: pointer to data portion of packet + * @to: pointer after cpl where data has to be inlined + * @len: length of data to inline + * + * Inline a packet's contents directly to TX descriptors, starting at + * the given position within the TX DMA ring. + * Most of the complexity of this operation is dealing with wrap arounds + * in the middle of the packet we want to inline. + */ +static void inline_tx_mbuf(const struct sge_txq *q, caddr_t from, caddr_t *to, + int len) +{ + int left = RTE_PTR_DIFF(q->stat, *to); + + if (likely((uintptr_t)*to + len <= (uintptr_t)q->stat)) { + rte_memcpy(*to, from, len); + *to = RTE_PTR_ADD(*to, len); + } else { + rte_memcpy(*to, from, left); + from = RTE_PTR_ADD(from, left); + left = len - left; + rte_memcpy((void *)q->desc, from, left); + *to = RTE_PTR_ADD((void *)q->desc, left); + } +} + +/** + * ctrl_xmit - send a packet through an SGE control Tx queue + * @q: the control queue + * @mbuf: the packet + * + * Send a packet through an SGE control Tx queue. Packets sent through + * a control queue must fit entirely as immediate data. + */ +static int ctrl_xmit(struct sge_ctrl_txq *q, struct rte_mbuf *mbuf) +{ + unsigned int ndesc; + struct fw_wr_hdr *wr; + caddr_t dst; + + if (unlikely(!is_imm(mbuf))) { + WARN_ON(1); + rte_pktmbuf_free(mbuf); + return -1; + } + + reclaim_completed_tx_imm(&q->q); + ndesc = DIV_ROUND_UP(mbuf->pkt_len, sizeof(struct tx_desc)); + t4_os_lock(&q->ctrlq_lock); + + q->full = txq_avail(&q->q) < ndesc ? 1 : 0; + if (unlikely(q->full)) { + t4_os_unlock(&q->ctrlq_lock); + return -1; + } + + wr = (struct fw_wr_hdr *)&q->q.desc[q->q.pidx]; + dst = (void *)wr; + inline_tx_mbuf(&q->q, rte_pktmbuf_mtod(mbuf, caddr_t), + &dst, mbuf->data_len); + + txq_advance(&q->q, ndesc); + if (unlikely(txq_avail(&q->q) < 64)) + wr->lo |= htonl(F_FW_WR_EQUEQ); + + q->txp++; + + ring_tx_db(q->adapter, &q->q); + t4_os_unlock(&q->ctrlq_lock); + + rte_pktmbuf_free(mbuf); + return 0; +} + +/** + * t4_mgmt_tx - send a management message + * @q: the control queue + * @mbuf: the packet containing the management message + * + * Send a management message through control queue. + */ +int t4_mgmt_tx(struct sge_ctrl_txq *q, struct rte_mbuf *mbuf) +{ + return ctrl_xmit(q, mbuf); +} + /** * alloc_ring - allocate resources for an SGE descriptor ring * @dev: the PCI device's core device @@ -2080,6 +2205,64 @@ int t4_sge_alloc_eth_txq(struct adapter *adap, struct sge_eth_txq *txq, return 0; } +int t4_sge_alloc_ctrl_txq(struct adapter *adap, struct sge_ctrl_txq *txq, + struct rte_eth_dev *eth_dev, uint16_t queue_id, + unsigned int iqid, int socket_id) +{ + int ret, nentries; + struct fw_eq_ctrl_cmd c; + struct sge *s = &adap->sge; + 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]; + + /* Add status entries */ + nentries = txq->q.size + s->stat_len / sizeof(struct tx_desc); + + snprintf(z_name, sizeof(z_name), "%s_%s_%d_%d", + eth_dev->device->driver->name, "ctrl_tx_ring", + eth_dev->data->port_id, queue_id); + snprintf(z_name_sw, sizeof(z_name_sw), "%s_sw_ring", z_name); + + txq->q.desc = alloc_ring(txq->q.size, sizeof(struct tx_desc), + 0, &txq->q.phys_addr, + NULL, 0, queue_id, + socket_id, z_name, z_name_sw); + if (!txq->q.desc) + return -ENOMEM; + + memset(&c, 0, sizeof(c)); + c.op_to_vfn = htonl(V_FW_CMD_OP(FW_EQ_CTRL_CMD) | F_FW_CMD_REQUEST | + F_FW_CMD_WRITE | F_FW_CMD_EXEC | + V_FW_EQ_CTRL_CMD_PFN(adap->pf) | + V_FW_EQ_CTRL_CMD_VFN(0)); + c.alloc_to_len16 = htonl(F_FW_EQ_CTRL_CMD_ALLOC | + F_FW_EQ_CTRL_CMD_EQSTART | (sizeof(c) / 16)); + c.cmpliqid_eqid = htonl(V_FW_EQ_CTRL_CMD_CMPLIQID(0)); + c.physeqid_pkd = htonl(0); + c.fetchszm_to_iqid = + htonl(V_FW_EQ_CTRL_CMD_HOSTFCMODE(X_HOSTFCMODE_NONE) | + V_FW_EQ_CTRL_CMD_PCIECHN(pi->tx_chan) | + F_FW_EQ_CTRL_CMD_FETCHRO | V_FW_EQ_CTRL_CMD_IQID(iqid)); + c.dcaen_to_eqsize = + htonl(V_FW_EQ_CTRL_CMD_FBMIN(X_FETCHBURSTMIN_64B) | + V_FW_EQ_CTRL_CMD_FBMAX(X_FETCHBURSTMAX_512B) | + V_FW_EQ_CTRL_CMD_EQSIZE(nentries)); + c.eqaddr = cpu_to_be64(txq->q.phys_addr); + + ret = t4_wr_mbox(adap, adap->mbox, &c, sizeof(c), &c); + if (ret) { + txq->q.desc = NULL; + return ret; + } + + init_txq(adap, &txq->q, G_FW_EQ_CTRL_CMD_EQID(ntohl(c.cmpliqid_eqid)), + G_FW_EQ_CTRL_CMD_EQID(ntohl(c. physeqid_pkd))); + txq->adapter = adap; + txq->full = 0; + return 0; +} + static void free_txq(struct sge_txq *q) { q->cntxt_id = 0; @@ -2174,7 +2357,7 @@ void t4_sge_tx_monitor_stop(struct adapter *adap) */ void t4_free_sge_resources(struct adapter *adap) { - int i; + unsigned int i; struct sge_eth_rxq *rxq = &adap->sge.ethrxq[0]; struct sge_eth_txq *txq = &adap->sge.ethtxq[0]; @@ -2191,6 +2374,18 @@ void t4_free_sge_resources(struct adapter *adap) } } + /* clean up control Tx queues */ + for (i = 0; i < ARRAY_SIZE(adap->sge.ctrlq); i++) { + struct sge_ctrl_txq *cq = &adap->sge.ctrlq[i]; + + if (cq->q.desc) { + reclaim_completed_tx_imm(&cq->q); + t4_ctrl_eq_free(adap, adap->mbox, adap->pf, 0, + cq->q.cntxt_id); + free_txq(&cq->q); + } + } + if (adap->sge.fw_evtq.desc) free_rspq_fl(adap, &adap->sge.fw_evtq, NULL); }