diff options
Diffstat (limited to 'drivers/net/cxgbe/cxgbe_main.c')
| -rw-r--r-- | drivers/net/cxgbe/cxgbe_main.c | 1222 |
1 files changed, 1222 insertions, 0 deletions
diff --git a/drivers/net/cxgbe/cxgbe_main.c b/drivers/net/cxgbe/cxgbe_main.c new file mode 100644 index 00000000..ceaf5ab2 --- /dev/null +++ b/drivers/net/cxgbe/cxgbe_main.c @@ -0,0 +1,1222 @@ +/*- + * BSD LICENSE + * + * Copyright(c) 2014-2016 Chelsio Communications. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * * Neither the name of Chelsio Communications nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include <sys/queue.h> +#include <stdio.h> +#include <errno.h> +#include <stdint.h> +#include <string.h> +#include <unistd.h> +#include <stdarg.h> +#include <inttypes.h> +#include <netinet/in.h> + +#include <rte_byteorder.h> +#include <rte_common.h> +#include <rte_cycles.h> +#include <rte_interrupts.h> +#include <rte_log.h> +#include <rte_debug.h> +#include <rte_pci.h> +#include <rte_atomic.h> +#include <rte_branch_prediction.h> +#include <rte_memory.h> +#include <rte_memzone.h> +#include <rte_tailq.h> +#include <rte_eal.h> +#include <rte_alarm.h> +#include <rte_ether.h> +#include <rte_ethdev.h> +#include <rte_atomic.h> +#include <rte_malloc.h> +#include <rte_random.h> +#include <rte_dev.h> + +#include "common.h" +#include "t4_regs.h" +#include "t4_msg.h" +#include "cxgbe.h" + +/* + * Response queue handler for the FW event queue. + */ +static int fwevtq_handler(struct sge_rspq *q, const __be64 *rsp, + __rte_unused const struct pkt_gl *gl) +{ + u8 opcode = ((const struct rss_header *)rsp)->opcode; + + rsp++; /* skip RSS header */ + + /* + * FW can send EGR_UPDATEs encapsulated in a CPL_FW4_MSG. + */ + if (unlikely(opcode == CPL_FW4_MSG && + ((const struct cpl_fw4_msg *)rsp)->type == + FW_TYPE_RSSCPL)) { + rsp++; + opcode = ((const struct rss_header *)rsp)->opcode; + rsp++; + if (opcode != CPL_SGE_EGR_UPDATE) { + dev_err(q->adapter, "unexpected FW4/CPL %#x on FW event queue\n", + opcode); + goto out; + } + } + + if (likely(opcode == CPL_SGE_EGR_UPDATE)) { + /* do nothing */ + } else if (opcode == CPL_FW6_MSG || opcode == CPL_FW4_MSG) { + const struct cpl_fw6_msg *msg = (const void *)rsp; + + t4_handle_fw_rpl(q->adapter, msg->data); + } else { + dev_err(adapter, "unexpected CPL %#x on FW event queue\n", + opcode); + } +out: + return 0; +} + +int setup_sge_fwevtq(struct adapter *adapter) +{ + struct sge *s = &adapter->sge; + int err = 0; + int msi_idx = 0; + + err = t4_sge_alloc_rxq(adapter, &s->fw_evtq, true, adapter->eth_dev, + msi_idx, NULL, fwevtq_handler, -1, NULL, 0, + rte_socket_id()); + return err; +} + +static int closest_timer(const struct sge *s, int time) +{ + unsigned int i, match = 0; + int delta, min_delta = INT_MAX; + + for (i = 0; i < ARRAY_SIZE(s->timer_val); i++) { + delta = time - s->timer_val[i]; + if (delta < 0) + delta = -delta; + if (delta < min_delta) { + min_delta = delta; + match = i; + } + } + return match; +} + +static int closest_thres(const struct sge *s, int thres) +{ + unsigned int i, match = 0; + int delta, min_delta = INT_MAX; + + for (i = 0; i < ARRAY_SIZE(s->counter_val); i++) { + delta = thres - s->counter_val[i]; + if (delta < 0) + delta = -delta; + if (delta < min_delta) { + min_delta = delta; + match = i; + } + } + return match; +} + +/** + * cxgb4_set_rspq_intr_params - set a queue's interrupt holdoff parameters + * @q: the Rx queue + * @us: the hold-off time in us, or 0 to disable timer + * @cnt: the hold-off packet count, or 0 to disable counter + * + * Sets an Rx queue's interrupt hold-off time and packet count. At least + * one of the two needs to be enabled for the queue to generate interrupts. + */ +int cxgb4_set_rspq_intr_params(struct sge_rspq *q, unsigned int us, + unsigned int cnt) +{ + struct adapter *adap = q->adapter; + unsigned int timer_val; + + if (cnt) { + int err; + u32 v, new_idx; + + new_idx = closest_thres(&adap->sge, cnt); + if (q->desc && q->pktcnt_idx != new_idx) { + /* the queue has already been created, update it */ + v = V_FW_PARAMS_MNEM(FW_PARAMS_MNEM_DMAQ) | + V_FW_PARAMS_PARAM_X( + FW_PARAMS_PARAM_DMAQ_IQ_INTCNTTHRESH) | + V_FW_PARAMS_PARAM_YZ(q->cntxt_id); + err = t4_set_params(adap, adap->mbox, adap->pf, 0, 1, + &v, &new_idx); + if (err) + return err; + } + q->pktcnt_idx = new_idx; + } + + timer_val = (us == 0) ? X_TIMERREG_RESTART_COUNTER : + closest_timer(&adap->sge, us); + + if ((us | cnt) == 0) + q->intr_params = V_QINTR_TIMER_IDX(X_TIMERREG_UPDATE_CIDX); + else + q->intr_params = V_QINTR_TIMER_IDX(timer_val) | + V_QINTR_CNT_EN(cnt > 0); + return 0; +} + +static inline bool is_x_1g_port(const struct link_config *lc) +{ + return (lc->supported & FW_PORT_CAP_SPEED_1G) != 0; +} + +static inline bool is_x_10g_port(const struct link_config *lc) +{ + return ((lc->supported & FW_PORT_CAP_SPEED_10G) != 0 || + (lc->supported & FW_PORT_CAP_SPEED_40G) != 0 || + (lc->supported & FW_PORT_CAP_SPEED_100G) != 0); +} + +inline void init_rspq(struct adapter *adap, struct sge_rspq *q, + unsigned int us, unsigned int cnt, + unsigned int size, unsigned int iqe_size) +{ + q->adapter = adap; + cxgb4_set_rspq_intr_params(q, us, cnt); + q->iqe_len = iqe_size; + q->size = size; +} + +int cfg_queue_count(struct rte_eth_dev *eth_dev) +{ + struct port_info *pi = (struct port_info *)(eth_dev->data->dev_private); + struct adapter *adap = pi->adapter; + struct sge *s = &adap->sge; + unsigned int max_queues = s->max_ethqsets / adap->params.nports; + + if ((eth_dev->data->nb_rx_queues < 1) || + (eth_dev->data->nb_tx_queues < 1)) + return -EINVAL; + + if ((eth_dev->data->nb_rx_queues > max_queues) || + (eth_dev->data->nb_tx_queues > max_queues)) + return -EINVAL; + + if (eth_dev->data->nb_rx_queues > pi->rss_size) + return -EINVAL; + + /* We must configure RSS, since config has changed*/ + pi->flags &= ~PORT_RSS_DONE; + + pi->n_rx_qsets = eth_dev->data->nb_rx_queues; + pi->n_tx_qsets = eth_dev->data->nb_tx_queues; + + return 0; +} + +void cfg_queues(struct rte_eth_dev *eth_dev) +{ + struct rte_config *config = rte_eal_get_configuration(); + struct port_info *pi = (struct port_info *)(eth_dev->data->dev_private); + struct adapter *adap = pi->adapter; + struct sge *s = &adap->sge; + unsigned int i, nb_ports = 0, qidx = 0; + unsigned int q_per_port = 0; + + if (!(adap->flags & CFG_QUEUES)) { + for_each_port(adap, i) { + struct port_info *tpi = adap2pinfo(adap, i); + + nb_ports += (is_x_10g_port(&tpi->link_cfg)) || + is_x_1g_port(&tpi->link_cfg) ? 1 : 0; + } + + /* + * We default up to # of cores queues per 1G/10G port. + */ + if (nb_ports) + q_per_port = (MAX_ETH_QSETS - + (adap->params.nports - nb_ports)) / + nb_ports; + + if (q_per_port > config->lcore_count) + q_per_port = config->lcore_count; + + for_each_port(adap, i) { + struct port_info *pi = adap2pinfo(adap, i); + + pi->first_qset = qidx; + + /* Initially n_rx_qsets == n_tx_qsets */ + pi->n_rx_qsets = (is_x_10g_port(&pi->link_cfg) || + is_x_1g_port(&pi->link_cfg)) ? + q_per_port : 1; + pi->n_tx_qsets = pi->n_rx_qsets; + + if (pi->n_rx_qsets > pi->rss_size) + pi->n_rx_qsets = pi->rss_size; + + qidx += pi->n_rx_qsets; + } + + s->max_ethqsets = qidx; + + for (i = 0; i < ARRAY_SIZE(s->ethrxq); i++) { + struct sge_eth_rxq *r = &s->ethrxq[i]; + + init_rspq(adap, &r->rspq, 0, 0, 1024, 64); + r->usembufs = 1; + r->fl.size = (r->usembufs ? 1024 : 72); + } + + for (i = 0; i < ARRAY_SIZE(s->ethtxq); i++) + s->ethtxq[i].q.size = 1024; + + init_rspq(adap, &adap->sge.fw_evtq, 0, 0, 1024, 64); + adap->flags |= CFG_QUEUES; + } +} + +void cxgbe_stats_get(struct port_info *pi, struct port_stats *stats) +{ + t4_get_port_stats_offset(pi->adapter, pi->tx_chan, stats, + &pi->stats_base); +} + +void cxgbe_stats_reset(struct port_info *pi) +{ + t4_clr_port_stats(pi->adapter, pi->tx_chan); +} + +static void setup_memwin(struct adapter *adap) +{ + u32 mem_win0_base; + + /* For T5, only relative offset inside the PCIe BAR is passed */ + mem_win0_base = MEMWIN0_BASE; + + /* + * Set up memory window for accessing adapter memory ranges. (Read + * back MA register to ensure that changes propagate before we attempt + * to use the new values.) + */ + t4_write_reg(adap, + PCIE_MEM_ACCESS_REG(A_PCIE_MEM_ACCESS_BASE_WIN, + MEMWIN_NIC), + mem_win0_base | V_BIR(0) | + V_WINDOW(ilog2(MEMWIN0_APERTURE) - X_WINDOW_SHIFT)); + t4_read_reg(adap, + PCIE_MEM_ACCESS_REG(A_PCIE_MEM_ACCESS_BASE_WIN, + MEMWIN_NIC)); +} + +static int init_rss(struct adapter *adap) +{ + unsigned int i; + int err; + + err = t4_init_rss_mode(adap, adap->mbox); + if (err) + return err; + + for_each_port(adap, i) { + struct port_info *pi = adap2pinfo(adap, i); + + pi->rss = rte_zmalloc(NULL, pi->rss_size * sizeof(u16), 0); + if (!pi->rss) + return -ENOMEM; + } + return 0; +} + +static void print_port_info(struct adapter *adap) +{ + int i; + char buf[80]; + struct rte_pci_addr *loc = &adap->pdev->addr; + + for_each_port(adap, i) { + const struct port_info *pi = &adap->port[i]; + char *bufp = buf; + + if (pi->link_cfg.supported & FW_PORT_CAP_SPEED_100M) + bufp += sprintf(bufp, "100/"); + if (pi->link_cfg.supported & FW_PORT_CAP_SPEED_1G) + bufp += sprintf(bufp, "1000/"); + if (pi->link_cfg.supported & FW_PORT_CAP_SPEED_10G) + bufp += sprintf(bufp, "10G/"); + if (pi->link_cfg.supported & FW_PORT_CAP_SPEED_40G) + bufp += sprintf(bufp, "40G/"); + if (bufp != buf) + --bufp; + sprintf(bufp, "BASE-%s", + t4_get_port_type_description( + (enum fw_port_type)pi->port_type)); + + dev_info(adap, + " " PCI_PRI_FMT " Chelsio rev %d %s %s\n", + loc->domain, loc->bus, loc->devid, loc->function, + CHELSIO_CHIP_RELEASE(adap->params.chip), buf, + (adap->flags & USING_MSIX) ? " MSI-X" : + (adap->flags & USING_MSI) ? " MSI" : ""); + } +} + +/* + * Tweak configuration based on system architecture, etc. Most of these have + * defaults assigned to them by Firmware Configuration Files (if we're using + * them) but need to be explicitly set if we're using hard-coded + * initialization. So these are essentially common tweaks/settings for + * Configuration Files and hard-coded initialization ... + */ +static int adap_init0_tweaks(struct adapter *adapter) +{ + u8 rx_dma_offset; + + /* + * Fix up various Host-Dependent Parameters like Page Size, Cache + * Line Size, etc. The firmware default is for a 4KB Page Size and + * 64B Cache Line Size ... + */ + t4_fixup_host_params_compat(adapter, CXGBE_PAGE_SIZE, L1_CACHE_BYTES, + T5_LAST_REV); + + /* + * Keep the chip default offset to deliver Ingress packets into our + * DMA buffers to zero + */ + rx_dma_offset = 0; + t4_set_reg_field(adapter, A_SGE_CONTROL, V_PKTSHIFT(M_PKTSHIFT), + V_PKTSHIFT(rx_dma_offset)); + + t4_set_reg_field(adapter, A_SGE_FLM_CFG, + V_CREDITCNT(M_CREDITCNT) | M_CREDITCNTPACKING, + V_CREDITCNT(3) | V_CREDITCNTPACKING(1)); + + t4_set_reg_field(adapter, A_SGE_CONTROL2, V_IDMAARBROUNDROBIN(1U), + V_IDMAARBROUNDROBIN(1U)); + + /* + * Don't include the "IP Pseudo Header" in CPL_RX_PKT checksums: Linux + * adds the pseudo header itself. + */ + t4_tp_wr_bits_indirect(adapter, A_TP_INGRESS_CONFIG, + F_CSUM_HAS_PSEUDO_HDR, 0); + + return 0; +} + +/* + * Attempt to initialize the adapter via a Firmware Configuration File. + */ +static int adap_init0_config(struct adapter *adapter, int reset) +{ + struct fw_caps_config_cmd caps_cmd; + unsigned long mtype = 0, maddr = 0; + u32 finiver, finicsum, cfcsum; + int ret; + int config_issued = 0; + int cfg_addr; + char config_name[20]; + + /* + * Reset device if necessary. + */ + if (reset) { + ret = t4_fw_reset(adapter, adapter->mbox, + F_PIORSTMODE | F_PIORST); + if (ret < 0) { + dev_warn(adapter, "Firmware reset failed, error %d\n", + -ret); + goto bye; + } + } + + cfg_addr = t4_flash_cfg_addr(adapter); + if (cfg_addr < 0) { + ret = cfg_addr; + dev_warn(adapter, "Finding address for firmware config file in flash failed, error %d\n", + -ret); + goto bye; + } + + strcpy(config_name, "On Flash"); + mtype = FW_MEMTYPE_CF_FLASH; + maddr = cfg_addr; + + /* + * Issue a Capability Configuration command to the firmware to get it + * to parse the Configuration File. We don't use t4_fw_config_file() + * because we want the ability to modify various features after we've + * processed the configuration file ... + */ + memset(&caps_cmd, 0, sizeof(caps_cmd)); + caps_cmd.op_to_write = cpu_to_be32(V_FW_CMD_OP(FW_CAPS_CONFIG_CMD) | + F_FW_CMD_REQUEST | F_FW_CMD_READ); + caps_cmd.cfvalid_to_len16 = + cpu_to_be32(F_FW_CAPS_CONFIG_CMD_CFVALID | + V_FW_CAPS_CONFIG_CMD_MEMTYPE_CF(mtype) | + V_FW_CAPS_CONFIG_CMD_MEMADDR64K_CF(maddr >> 16) | + FW_LEN16(caps_cmd)); + ret = t4_wr_mbox(adapter, adapter->mbox, &caps_cmd, sizeof(caps_cmd), + &caps_cmd); + /* + * If the CAPS_CONFIG failed with an ENOENT (for a Firmware + * Configuration File in FLASH), our last gasp effort is to use the + * Firmware Configuration File which is embedded in the firmware. A + * very few early versions of the firmware didn't have one embedded + * but we can ignore those. + */ + if (ret == -ENOENT) { + dev_info(adapter, "%s: Going for embedded config in firmware..\n", + __func__); + + memset(&caps_cmd, 0, sizeof(caps_cmd)); + caps_cmd.op_to_write = + cpu_to_be32(V_FW_CMD_OP(FW_CAPS_CONFIG_CMD) | + F_FW_CMD_REQUEST | F_FW_CMD_READ); + caps_cmd.cfvalid_to_len16 = cpu_to_be32(FW_LEN16(caps_cmd)); + ret = t4_wr_mbox(adapter, adapter->mbox, &caps_cmd, + sizeof(caps_cmd), &caps_cmd); + strcpy(config_name, "Firmware Default"); + } + + config_issued = 1; + if (ret < 0) + goto bye; + + finiver = be32_to_cpu(caps_cmd.finiver); + finicsum = be32_to_cpu(caps_cmd.finicsum); + cfcsum = be32_to_cpu(caps_cmd.cfcsum); + if (finicsum != cfcsum) + dev_warn(adapter, "Configuration File checksum mismatch: [fini] csum=%#x, computed csum=%#x\n", + finicsum, cfcsum); + + /* + * If we're a pure NIC driver then disable all offloading facilities. + * This will allow the firmware to optimize aspects of the hardware + * configuration which will result in improved performance. + */ + caps_cmd.niccaps &= cpu_to_be16(~(FW_CAPS_CONFIG_NIC_HASHFILTER | + FW_CAPS_CONFIG_NIC_ETHOFLD)); + caps_cmd.toecaps = 0; + caps_cmd.iscsicaps = 0; + caps_cmd.rdmacaps = 0; + caps_cmd.fcoecaps = 0; + + /* + * And now tell the firmware to use the configuration we just loaded. + */ + caps_cmd.op_to_write = cpu_to_be32(V_FW_CMD_OP(FW_CAPS_CONFIG_CMD) | + F_FW_CMD_REQUEST | F_FW_CMD_WRITE); + caps_cmd.cfvalid_to_len16 = htonl(FW_LEN16(caps_cmd)); + ret = t4_wr_mbox(adapter, adapter->mbox, &caps_cmd, sizeof(caps_cmd), + NULL); + if (ret < 0) { + dev_warn(adapter, "Unable to finalize Firmware Capabilities %d\n", + -ret); + goto bye; + } + + /* + * Tweak configuration based on system architecture, etc. + */ + ret = adap_init0_tweaks(adapter); + if (ret < 0) { + dev_warn(adapter, "Unable to do init0-tweaks %d\n", -ret); + goto bye; + } + + /* + * And finally tell the firmware to initialize itself using the + * parameters from the Configuration File. + */ + ret = t4_fw_initialize(adapter, adapter->mbox); + if (ret < 0) { + dev_warn(adapter, "Initializing Firmware failed, error %d\n", + -ret); + goto bye; + } + + /* + * Return successfully and note that we're operating with parameters + * not supplied by the driver, rather than from hard-wired + * initialization constants burried in the driver. + */ + dev_info(adapter, + "Successfully configured using Firmware Configuration File \"%s\", version %#x, computed checksum %#x\n", + config_name, finiver, cfcsum); + + return 0; + + /* + * Something bad happened. Return the error ... (If the "error" + * is that there's no Configuration File on the adapter we don't + * want to issue a warning since this is fairly common.) + */ +bye: + if (config_issued && ret != -ENOENT) + dev_warn(adapter, "\"%s\" configuration file error %d\n", + config_name, -ret); + + dev_debug(adapter, "%s: returning ret = %d ..\n", __func__, ret); + return ret; +} + +static int adap_init0(struct adapter *adap) +{ + int ret = 0; + u32 v, port_vec; + enum dev_state state; + u32 params[7], val[7]; + int reset = 1; + int mbox = adap->mbox; + + /* + * Contact FW, advertising Master capability. + */ + ret = t4_fw_hello(adap, adap->mbox, adap->mbox, MASTER_MAY, &state); + if (ret < 0) { + dev_err(adap, "%s: could not connect to FW, error %d\n", + __func__, -ret); + goto bye; + } + + CXGBE_DEBUG_MBOX(adap, "%s: adap->mbox = %d; ret = %d\n", __func__, + adap->mbox, ret); + + if (ret == mbox) + adap->flags |= MASTER_PF; + + if (state == DEV_STATE_INIT) { + /* + * Force halt and reset FW because a previous instance may have + * exited abnormally without properly shutting down + */ + ret = t4_fw_halt(adap, adap->mbox, reset); + if (ret < 0) { + dev_err(adap, "Failed to halt. Exit.\n"); + goto bye; + } + + ret = t4_fw_restart(adap, adap->mbox, reset); + if (ret < 0) { + dev_err(adap, "Failed to restart. Exit.\n"); + goto bye; + } + state = (enum dev_state)((unsigned)state & ~DEV_STATE_INIT); + } + + t4_get_fw_version(adap, &adap->params.fw_vers); + t4_get_tp_version(adap, &adap->params.tp_vers); + + dev_info(adap, "fw: %u.%u.%u.%u, TP: %u.%u.%u.%u\n", + G_FW_HDR_FW_VER_MAJOR(adap->params.fw_vers), + G_FW_HDR_FW_VER_MINOR(adap->params.fw_vers), + G_FW_HDR_FW_VER_MICRO(adap->params.fw_vers), + G_FW_HDR_FW_VER_BUILD(adap->params.fw_vers), + G_FW_HDR_FW_VER_MAJOR(adap->params.tp_vers), + G_FW_HDR_FW_VER_MINOR(adap->params.tp_vers), + G_FW_HDR_FW_VER_MICRO(adap->params.tp_vers), + G_FW_HDR_FW_VER_BUILD(adap->params.tp_vers)); + + ret = t4_get_core_clock(adap, &adap->params.vpd); + if (ret < 0) { + dev_err(adap, "%s: could not get core clock, error %d\n", + __func__, -ret); + goto bye; + } + + /* + * Find out what ports are available to us. Note that we need to do + * this before calling adap_init0_no_config() since it needs nports + * and portvec ... + */ + v = V_FW_PARAMS_MNEM(FW_PARAMS_MNEM_DEV) | + V_FW_PARAMS_PARAM_X(FW_PARAMS_PARAM_DEV_PORTVEC); + ret = t4_query_params(adap, adap->mbox, adap->pf, 0, 1, &v, &port_vec); + if (ret < 0) { + dev_err(adap, "%s: failure in t4_queury_params; error = %d\n", + __func__, ret); + goto bye; + } + + adap->params.nports = hweight32(port_vec); + adap->params.portvec = port_vec; + + dev_debug(adap, "%s: adap->params.nports = %u\n", __func__, + adap->params.nports); + + /* + * If the firmware is initialized already (and we're not forcing a + * master initialization), note that we're living with existing + * adapter parameters. Otherwise, it's time to try initializing the + * adapter ... + */ + if (state == DEV_STATE_INIT) { + dev_info(adap, "Coming up as %s: Adapter already initialized\n", + adap->flags & MASTER_PF ? "MASTER" : "SLAVE"); + } else { + dev_info(adap, "Coming up as MASTER: Initializing adapter\n"); + + ret = adap_init0_config(adap, reset); + if (ret == -ENOENT) { + dev_err(adap, + "No Configuration File present on adapter. Using hard-wired configuration parameters.\n"); + goto bye; + } + } + if (ret < 0) { + dev_err(adap, "could not initialize adapter, error %d\n", -ret); + goto bye; + } + + /* + * Give the SGE code a chance to pull in anything that it needs ... + * Note that this must be called after we retrieve our VPD parameters + * in order to know how to convert core ticks to seconds, etc. + */ + ret = t4_sge_init(adap); + if (ret < 0) { + dev_err(adap, "t4_sge_init failed with error %d\n", + -ret); + goto bye; + } + + /* + * Grab some of our basic fundamental operating parameters. + */ +#define FW_PARAM_DEV(param) \ + (V_FW_PARAMS_MNEM(FW_PARAMS_MNEM_DEV) | \ + V_FW_PARAMS_PARAM_X(FW_PARAMS_PARAM_DEV_##param)) + +#define FW_PARAM_PFVF(param) \ + (V_FW_PARAMS_MNEM(FW_PARAMS_MNEM_PFVF) | \ + V_FW_PARAMS_PARAM_X(FW_PARAMS_PARAM_PFVF_##param) | \ + V_FW_PARAMS_PARAM_Y(0) | \ + V_FW_PARAMS_PARAM_Z(0)) + + /* If we're running on newer firmware, let it know that we're + * prepared to deal with encapsulated CPL messages. Older + * firmware won't understand this and we'll just get + * unencapsulated messages ... + */ + params[0] = FW_PARAM_PFVF(CPLFW4MSG_ENCAP); + val[0] = 1; + (void)t4_set_params(adap, adap->mbox, adap->pf, 0, 1, params, val); + + /* + * Find out whether we're allowed to use the T5+ ULPTX MEMWRITE DSGL + * capability. Earlier versions of the firmware didn't have the + * ULPTX_MEMWRITE_DSGL so we'll interpret a query failure as no + * permission to use ULPTX MEMWRITE DSGL. + */ + if (is_t4(adap->params.chip)) { + adap->params.ulptx_memwrite_dsgl = false; + } else { + params[0] = FW_PARAM_DEV(ULPTX_MEMWRITE_DSGL); + ret = t4_query_params(adap, adap->mbox, adap->pf, 0, + 1, params, val); + adap->params.ulptx_memwrite_dsgl = (ret == 0 && val[0] != 0); + } + + /* + * The MTU/MSS Table is initialized by now, so load their values. If + * we're initializing the adapter, then we'll make any modifications + * we want to the MTU/MSS Table and also initialize the congestion + * parameters. + */ + t4_read_mtu_tbl(adap, adap->params.mtus, NULL); + if (state != DEV_STATE_INIT) { + int i; + + /* + * The default MTU Table contains values 1492 and 1500. + * However, for TCP, it's better to have two values which are + * a multiple of 8 +/- 4 bytes apart near this popular MTU. + * This allows us to have a TCP Data Payload which is a + * multiple of 8 regardless of what combination of TCP Options + * are in use (always a multiple of 4 bytes) which is + * important for performance reasons. For instance, if no + * options are in use, then we have a 20-byte IP header and a + * 20-byte TCP header. In this case, a 1500-byte MSS would + * result in a TCP Data Payload of 1500 - 40 == 1460 bytes + * which is not a multiple of 8. So using an MSS of 1488 in + * this case results in a TCP Data Payload of 1448 bytes which + * is a multiple of 8. On the other hand, if 12-byte TCP Time + * Stamps have been negotiated, then an MTU of 1500 bytes + * results in a TCP Data Payload of 1448 bytes which, as + * above, is a multiple of 8 bytes ... + */ + for (i = 0; i < NMTUS; i++) + if (adap->params.mtus[i] == 1492) { + adap->params.mtus[i] = 1488; + break; + } + + t4_load_mtus(adap, adap->params.mtus, adap->params.a_wnd, + adap->params.b_wnd); + } + t4_init_sge_params(adap); + t4_init_tp_params(adap); + + adap->params.drv_memwin = MEMWIN_NIC; + adap->flags |= FW_OK; + dev_debug(adap, "%s: returning zero..\n", __func__); + return 0; + + /* + * Something bad happened. If a command timed out or failed with EIO + * FW does not operate within its spec or something catastrophic + * happened to HW/FW, stop issuing commands. + */ +bye: + if (ret != -ETIMEDOUT && ret != -EIO) + t4_fw_bye(adap, adap->mbox); + return ret; +} + +/** + * t4_os_portmod_changed - handle port module changes + * @adap: the adapter associated with the module change + * @port_id: the port index whose module status has changed + * + * This is the OS-dependent handler for port module changes. It is + * invoked when a port module is removed or inserted for any OS-specific + * processing. + */ +void t4_os_portmod_changed(const struct adapter *adap, int port_id) +{ + static const char * const mod_str[] = { + NULL, "LR", "SR", "ER", "passive DA", "active DA", "LRM" + }; + + const struct port_info *pi = &adap->port[port_id]; + + if (pi->mod_type == FW_PORT_MOD_TYPE_NONE) + dev_info(adap, "Port%d: port module unplugged\n", pi->port_id); + else if (pi->mod_type < ARRAY_SIZE(mod_str)) + dev_info(adap, "Port%d: %s port module inserted\n", pi->port_id, + mod_str[pi->mod_type]); + else if (pi->mod_type == FW_PORT_MOD_TYPE_NOTSUPPORTED) + dev_info(adap, "Port%d: unsupported optical port module inserted\n", + pi->port_id); + else if (pi->mod_type == FW_PORT_MOD_TYPE_UNKNOWN) + dev_info(adap, "Port%d: unknown port module inserted, forcing TWINAX\n", + pi->port_id); + else if (pi->mod_type == FW_PORT_MOD_TYPE_ERROR) + dev_info(adap, "Port%d: transceiver module error\n", + pi->port_id); + else + dev_info(adap, "Port%d: unknown module type %d inserted\n", + pi->port_id, pi->mod_type); +} + +/** + * link_start - enable a port + * @dev: the port to enable + * + * Performs the MAC and PHY actions needed to enable a port. + */ +int link_start(struct port_info *pi) +{ + struct adapter *adapter = pi->adapter; + int ret; + unsigned int mtu; + + mtu = pi->eth_dev->data->dev_conf.rxmode.max_rx_pkt_len - + (ETHER_HDR_LEN + ETHER_CRC_LEN); + + /* + * We do not set address filters and promiscuity here, the stack does + * that step explicitly. + */ + ret = t4_set_rxmode(adapter, adapter->mbox, pi->viid, mtu, -1, -1, + -1, 1, true); + if (ret == 0) { + ret = t4_change_mac(adapter, adapter->mbox, pi->viid, + pi->xact_addr_filt, + (u8 *)&pi->eth_dev->data->mac_addrs[0], + true, true); + if (ret >= 0) { + pi->xact_addr_filt = ret; + ret = 0; + } + } + if (ret == 0) + ret = t4_link_l1cfg(adapter, adapter->mbox, pi->tx_chan, + &pi->link_cfg); + if (ret == 0) { + /* + * Enabling a Virtual Interface can result in an interrupt + * during the processing of the VI Enable command and, in some + * paths, result in an attempt to issue another command in the + * interrupt context. Thus, we disable interrupts during the + * course of the VI Enable command ... + */ + ret = t4_enable_vi_params(adapter, adapter->mbox, pi->viid, + true, true, false); + } + return ret; +} + +/** + * cxgb4_write_rss - write the RSS table for a given port + * @pi: the port + * @queues: array of queue indices for RSS + * + * Sets up the portion of the HW RSS table for the port's VI to distribute + * packets to the Rx queues in @queues. + */ +int cxgb4_write_rss(const struct port_info *pi, const u16 *queues) +{ + u16 *rss; + int i, err; + struct adapter *adapter = pi->adapter; + const struct sge_eth_rxq *rxq; + + /* Should never be called before setting up sge eth rx queues */ + BUG_ON(!(adapter->flags & FULL_INIT_DONE)); + + rxq = &adapter->sge.ethrxq[pi->first_qset]; + rss = rte_zmalloc(NULL, pi->rss_size * sizeof(u16), 0); + if (!rss) + return -ENOMEM; + + /* map the queue indices to queue ids */ + for (i = 0; i < pi->rss_size; i++, queues++) + rss[i] = rxq[*queues].rspq.abs_id; + + err = t4_config_rss_range(adapter, adapter->pf, pi->viid, 0, + pi->rss_size, rss, pi->rss_size); + /* + * If Tunnel All Lookup isn't specified in the global RSS + * Configuration, then we need to specify a default Ingress + * Queue for any ingress packets which aren't hashed. We'll + * use our first ingress queue ... + */ + if (!err) + err = t4_config_vi_rss(adapter, adapter->mbox, pi->viid, + F_FW_RSS_VI_CONFIG_CMD_IP6FOURTUPEN | + F_FW_RSS_VI_CONFIG_CMD_IP6TWOTUPEN | + F_FW_RSS_VI_CONFIG_CMD_IP4FOURTUPEN | + F_FW_RSS_VI_CONFIG_CMD_IP4TWOTUPEN | + F_FW_RSS_VI_CONFIG_CMD_UDPEN, + rss[0]); + rte_free(rss); + return err; +} + +/** + * setup_rss - configure RSS + * @adapter: the adapter + * + * Sets up RSS to distribute packets to multiple receive queues. We + * configure the RSS CPU lookup table to distribute to the number of HW + * receive queues, and the response queue lookup table to narrow that + * down to the response queues actually configured for each port. + * We always configure the RSS mapping for all ports since the mapping + * table has plenty of entries. + */ +int setup_rss(struct port_info *pi) +{ + int j, err; + struct adapter *adapter = pi->adapter; + + dev_debug(adapter, "%s: pi->rss_size = %u; pi->n_rx_qsets = %u\n", + __func__, pi->rss_size, pi->n_rx_qsets); + + if (!pi->flags & PORT_RSS_DONE) { + if (adapter->flags & FULL_INIT_DONE) { + /* Fill default values with equal distribution */ + for (j = 0; j < pi->rss_size; j++) + pi->rss[j] = j % pi->n_rx_qsets; + + err = cxgb4_write_rss(pi, pi->rss); + if (err) + return err; + pi->flags |= PORT_RSS_DONE; + } + } + return 0; +} + +/* + * Enable NAPI scheduling and interrupt generation for all Rx queues. + */ +static void enable_rx(struct adapter *adap) +{ + struct sge *s = &adap->sge; + struct sge_rspq *q = &s->fw_evtq; + int i, j; + + /* 0-increment GTS to start the timer and enable interrupts */ + t4_write_reg(adap, MYPF_REG(A_SGE_PF_GTS), + V_SEINTARM(q->intr_params) | + V_INGRESSQID(q->cntxt_id)); + + for_each_port(adap, i) { + const struct port_info *pi = &adap->port[i]; + struct rte_eth_dev *eth_dev = pi->eth_dev; + + for (j = 0; j < eth_dev->data->nb_rx_queues; j++) { + q = eth_dev->data->rx_queues[j]; + + /* + * 0-increment GTS to start the timer and enable + * interrupts + */ + t4_write_reg(adap, MYPF_REG(A_SGE_PF_GTS), + V_SEINTARM(q->intr_params) | + V_INGRESSQID(q->cntxt_id)); + } + } +} + +/** + * cxgb_up - enable the adapter + * @adap: adapter being enabled + * + * Called when the first port is enabled, this function performs the + * actions necessary to make an adapter operational, such as completing + * the initialization of HW modules, and enabling interrupts. + */ +int cxgbe_up(struct adapter *adap) +{ + enable_rx(adap); + t4_sge_tx_monitor_start(adap); + t4_intr_enable(adap); + adap->flags |= FULL_INIT_DONE; + + /* TODO: deadman watchdog ?? */ + return 0; +} + +/* + * Close the port + */ +int cxgbe_down(struct port_info *pi) +{ + struct adapter *adapter = pi->adapter; + int err = 0; + + err = t4_enable_vi(adapter, adapter->mbox, pi->viid, false, false); + if (err) { + dev_err(adapter, "%s: disable_vi failed: %d\n", __func__, err); + return err; + } + + t4_reset_link_config(adapter, pi->port_id); + return 0; +} + +/* + * Release resources when all the ports have been stopped. + */ +void cxgbe_close(struct adapter *adapter) +{ + struct port_info *pi; + int i; + + if (adapter->flags & FULL_INIT_DONE) { + t4_intr_disable(adapter); + t4_sge_tx_monitor_stop(adapter); + t4_free_sge_resources(adapter); + for_each_port(adapter, i) { + pi = adap2pinfo(adapter, i); + if (pi->viid != 0) + t4_free_vi(adapter, adapter->mbox, + adapter->pf, 0, pi->viid); + rte_free(pi->eth_dev->data->mac_addrs); + } + adapter->flags &= ~FULL_INIT_DONE; + } + + if (adapter->flags & FW_OK) + t4_fw_bye(adapter, adapter->mbox); +} + +int cxgbe_probe(struct adapter *adapter) +{ + struct port_info *pi; + int func, i; + int err = 0; + + func = G_SOURCEPF(t4_read_reg(adapter, A_PL_WHOAMI)); + adapter->mbox = func; + adapter->pf = func; + + t4_os_lock_init(&adapter->mbox_lock); + TAILQ_INIT(&adapter->mbox_list); + + err = t4_prep_adapter(adapter); + if (err) + return err; + + setup_memwin(adapter); + err = adap_init0(adapter); + if (err) { + dev_err(adapter, "%s: Adapter initialization failed, error %d\n", + __func__, err); + goto out_free; + } + + if (!is_t4(adapter->params.chip)) { + /* + * The userspace doorbell BAR is split evenly into doorbell + * regions, each associated with an egress queue. If this + * per-queue region is large enough (at least UDBS_SEG_SIZE) + * then it can be used to submit a tx work request with an + * implied doorbell. Enable write combining on the BAR if + * there is room for such work requests. + */ + int s_qpp, qpp, num_seg; + + s_qpp = (S_QUEUESPERPAGEPF0 + + (S_QUEUESPERPAGEPF1 - S_QUEUESPERPAGEPF0) * + adapter->pf); + qpp = 1 << ((t4_read_reg(adapter, + A_SGE_EGRESS_QUEUES_PER_PAGE_PF) >> s_qpp) + & M_QUEUESPERPAGEPF0); + num_seg = CXGBE_PAGE_SIZE / UDBS_SEG_SIZE; + if (qpp > num_seg) + dev_warn(adapter, "Incorrect SGE EGRESS QUEUES_PER_PAGE configuration, continuing in debug mode\n"); + + adapter->bar2 = (void *)adapter->pdev->mem_resource[2].addr; + if (!adapter->bar2) { + dev_err(adapter, "cannot map device bar2 region\n"); + err = -ENOMEM; + goto out_free; + } + t4_write_reg(adapter, A_SGE_STAT_CFG, V_STATSOURCE_T5(7) | + V_STATMODE(0)); + } + + for_each_port(adapter, i) { + char name[RTE_ETH_NAME_MAX_LEN]; + struct rte_eth_dev_data *data = NULL; + const unsigned int numa_node = rte_socket_id(); + + pi = &adapter->port[i]; + pi->adapter = adapter; + pi->xact_addr_filt = -1; + pi->port_id = i; + + snprintf(name, sizeof(name), "cxgbe%d", + adapter->eth_dev->data->port_id + i); + + if (i == 0) { + /* First port is already allocated by DPDK */ + pi->eth_dev = adapter->eth_dev; + goto allocate_mac; + } + + /* + * now do all data allocation - for eth_dev structure, + * and internal (private) data for the remaining ports + */ + + /* reserve an ethdev entry */ + pi->eth_dev = rte_eth_dev_allocate(name, RTE_ETH_DEV_PCI); + if (!pi->eth_dev) + goto out_free; + + data = rte_zmalloc_socket(name, sizeof(*data), 0, numa_node); + if (!data) + goto out_free; + + data->port_id = adapter->eth_dev->data->port_id + i; + + pi->eth_dev->data = data; + +allocate_mac: + pi->eth_dev->pci_dev = adapter->pdev; + pi->eth_dev->data->dev_private = pi; + pi->eth_dev->driver = adapter->eth_dev->driver; + pi->eth_dev->dev_ops = adapter->eth_dev->dev_ops; + pi->eth_dev->tx_pkt_burst = adapter->eth_dev->tx_pkt_burst; + pi->eth_dev->rx_pkt_burst = adapter->eth_dev->rx_pkt_burst; + + rte_eth_copy_pci_info(pi->eth_dev, pi->eth_dev->pci_dev); + + TAILQ_INIT(&pi->eth_dev->link_intr_cbs); + + pi->eth_dev->data->mac_addrs = rte_zmalloc(name, + ETHER_ADDR_LEN, 0); + if (!pi->eth_dev->data->mac_addrs) { + dev_err(adapter, "%s: Mem allocation failed for storing mac addr, aborting\n", + __func__); + err = -1; + goto out_free; + } + } + + if (adapter->flags & FW_OK) { + err = t4_port_init(adapter, adapter->mbox, adapter->pf, 0); + if (err) { + dev_err(adapter, "%s: t4_port_init failed with err %d\n", + __func__, err); + goto out_free; + } + } + + cfg_queues(adapter->eth_dev); + + print_port_info(adapter); + + err = init_rss(adapter); + if (err) + goto out_free; + + return 0; + +out_free: + for_each_port(adapter, i) { + pi = adap2pinfo(adapter, i); + if (pi->viid != 0) + t4_free_vi(adapter, adapter->mbox, adapter->pf, + 0, pi->viid); + /* Skip first port since it'll be de-allocated by DPDK */ + if (i == 0) + continue; + if (pi->eth_dev->data) + rte_free(pi->eth_dev->data); + } + + if (adapter->flags & FW_OK) + t4_fw_bye(adapter, adapter->mbox); + return -err; +} |