/* * This file is part of the Chelsio T4 PCI-E SR-IOV Virtual Function Ethernet * driver for Linux. * * Copyright (c) 2009-2010 Chelsio Communications, Inc. All rights reserved. * * This software is available to you under a choice of one of two * licenses. You may choose to be licensed under the terms of the GNU * General Public License (GPL) Version 2, available from the file * COPYING in the main directory of this source tree, or the * OpenIB.org BSD license below: * * 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. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE. */ #include #include #include "t4vf_common.h" #include "t4vf_defs.h" #include "../cxgb4/t4_regs.h" #include "../cxgb4/t4fw_api.h" /* * Wait for the device to become ready (signified by our "who am I" register * returning a value other than all 1's). Return an error if it doesn't * become ready ... */ int __devinit t4vf_wait_dev_ready(struct adapter *adapter) { const u32 whoami = T4VF_PL_BASE_ADDR + PL_VF_WHOAMI; const u32 notready1 = 0xffffffff; const u32 notready2 = 0xeeeeeeee; u32 val; val = t4_read_reg(adapter, whoami); if (val != notready1 && val != notready2) return 0; msleep(500); val = t4_read_reg(adapter, whoami); if (val != notready1 && val != notready2) return 0; else return -EIO; } /* * Get the reply to a mailbox command and store it in @rpl in big-endian order * (since the firmware data structures are specified in a big-endian layout). */ static void get_mbox_rpl(struct adapter *adapter, __be64 *rpl, int size, u32 mbox_data) { for ( ; size; size -= 8, mbox_data += 8) *rpl++ = cpu_to_be64(t4_read_reg64(adapter, mbox_data)); } /* * Dump contents of mailbox with a leading tag. */ static void dump_mbox(struct adapter *adapter, const char *tag, u32 mbox_data) { dev_err(adapter->pdev_dev, "mbox %s: %llx %llx %llx %llx %llx %llx %llx %llx\n", tag, (unsigned long long)t4_read_reg64(adapter, mbox_data + 0), (unsigned long long)t4_read_reg64(adapter, mbox_data + 8), (unsigned long long)t4_read_reg64(adapter, mbox_data + 16), (unsigned long long)t4_read_reg64(adapter, mbox_data + 24), (unsigned long long)t4_read_reg64(adapter, mbox_data + 32), (unsigned long long)t4_read_reg64(adapter, mbox_data + 40), (unsigned long long)t4_read_reg64(adapter, mbox_data + 48), (unsigned long long)t4_read_reg64(adapter, mbox_data + 56)); } /** * t4vf_wr_mbox_core - send a command to FW through the mailbox * @adapter: the adapter * @cmd: the command to write * @size: command length in bytes * @rpl: where to optionally store the reply * @sleep_ok: if true we may sleep while awaiting command completion * * Sends the given command to FW through the mailbox and waits for the * FW to execute the command. If @rpl is not %NULL it is used to store * the FW's reply to the command. The command and its optional reply * are of the same length. FW can take up to 500 ms to respond. * @sleep_ok determines whether we may sleep while awaiting the response. * If sleeping is allowed we use progressive backoff otherwise we spin. * * The return value is 0 on success or a negative errno on failure. A * failure can happen either because we are not able to execute the * command or FW executes it but signals an error. In the latter case * the return value is the error code indicated by FW (negated). */ int t4vf_wr_mbox_core(struct adapter *adapter, const void *cmd, int size, void *rpl, bool sleep_ok) { static int delay[] = { 1, 1, 3, 5, 10, 10, 20, 50, 100 }; u32 v; int i, ms, delay_idx; const __be64 *p; u32 mbox_data = T4VF_MBDATA_BASE_ADDR; u32 mbox_ctl = T4VF_CIM_BASE_ADDR + CIM_VF_EXT_MAILBOX_CTRL; /* * Commands must be multiples of 16 bytes in length and may not be * larger than the size of the Mailbox Data register array. */ if ((size % 16) != 0 || size > NUM_CIM_VF_MAILBOX_DATA_INSTANCES * 4) return -EINVAL; /* * Loop trying to get ownership of the mailbox. Return an error * if we can't gain ownership. */ v = MBOWNER_GET(t4_read_reg(adapter, mbox_ctl)); for (i = 0; v == MBOX_OWNER_NONE && i < 3; i++) v = MBOWNER_GET(t4_read_reg(adapter, mbox_ctl)); if (v != MBOX_OWNER_DRV) return v == MBOX_OWNER_FW ? -EBUSY : -ETIMEDOUT; /* * Write the command array into the Mailbox Data register array and * transfer ownership of the mailbox to the firmware. */ for (i = 0, p = cmd; i < size; i += 8) t4_write_reg64(adapter, mbox_data + i, be64_to_cpu(*p++)); t4_write_reg(adapter, mbox_ctl, MBMSGVALID | MBOWNER(MBOX_OWNER_FW)); t4_read_reg(adapter, mbox_ctl); /* flush write */ /* * Spin waiting for firmware to acknowledge processing our command. */ delay_idx = 0; ms = delay[0]; for (i = 0; i < 500; i += ms) { if (sleep_ok) { ms = delay[delay_idx]; if (delay_idx < ARRAY_SIZE(delay) - 1) delay_idx++; msleep(ms); } else mdelay(ms); /* * If we're the owner, see if this is the reply we wanted. */ v = t4_read_reg(adapter, mbox_ctl); if (MBOWNER_GET(v) == MBOX_OWNER_DRV) { /* * If the Message Valid bit isn't on, revoke ownership * of the mailbox and continue waiting for our reply. */ if ((v & MBMSGVALID) == 0) { t4_write_reg(adapter, mbox_ctl, MBOWNER(MBOX_OWNER_NONE)); continue; } /* * We now have our reply. Extract the command return * value, copy the reply back to our caller's buffer * (if specified) and revoke ownership of the mailbox. * We return the (negated) firmware command return * code (this depends on FW_SUCCESS == 0). */ /* return value in low-order little-endian word */ v = t4_read_reg(adapter, mbox_data); if (FW_CMD_RETVAL_GET(v)) dump_mbox(adapter, "FW Error", mbox_data); if (rpl) { /* request bit in high-order BE word */ WARN_ON((be32_to_cpu(*(const u32 *)cmd) & FW_CMD_REQUEST) == 0); get_mbox_rpl(adapter, rpl, size, mbox_data); WARN_ON((be32_to_cpu(*(u32 *)rpl) & FW_CMD_REQUEST) != 0); } t4_write_reg(adapter, mbox_ctl, MBOWNER(MBOX_OWNER_NONE)); return -FW_CMD_RETVAL_GET(v); } } /* * We timed out. Return the error ... */ dump_mbox(adapter, "FW Timeout", mbox_data); return -ETIMEDOUT; } /** * hash_mac_addr - return the hash value of a MAC address * @addr: the 48-bit Ethernet MAC address * * Hashes a MAC address according to the hash function used by hardware * inexact (hash) address matching. */ static int hash_mac_addr(const u8 *addr) { u32 a = ((u32)addr[0] << 16) | ((u32)addr[1] << 8) | addr[2]; u32 b = ((u32)addr[3] << 16) | ((u32)addr[4] << 8) | addr[5]; a ^= b; a ^= (a >> 12); a ^= (a >> 6); return a & 0x3f; } /** * init_link_config - initialize a link's SW state * @lc: structure holding the link state * @caps: link capabilities * * Initializes the SW state maintained for each link, including the link's * capabilities and default speed/flow-control/autonegotiation settings. */ static void __devinit init_link_config(struct link_config *lc, unsigned int caps) { lc->supported = caps; lc->requested_speed = 0; lc->speed = 0; lc->requested_fc = lc->fc = PAUSE_RX | PAUSE_TX; if (lc->supported & SUPPORTED_Autoneg) { lc->advertising = lc->supported; lc->autoneg = AUTONEG_ENABLE; lc->requested_fc |= PAUSE_AUTONEG; } else { lc->advertising = 0; lc->autoneg = AUTONEG_DISABLE; } } /** * t4vf_port_init - initialize port hardware/software state * @adapter: the adapter * @pidx: the adapter port index */ int __devinit t4vf_port_init(struct adapter *adapter, int pidx) { struct port_info *pi = adap2pinfo(adapter, pidx); struct fw_vi_cmd vi_cmd, vi_rpl; struct fw_port_cmd port_cmd, port_rpl; int v; u32 word; /* * Execute a VI Read command to get our Virtual Interface information * like MAC address, etc. */ memset(&vi_cmd, 0, sizeof(vi_cmd)); vi_cmd.op_to_vfn = cpu_to_be32(FW_CMD_OP(FW_VI_CMD) | FW_CMD_REQUEST | FW_CMD_READ); vi_cmd.alloc_to_len16 = cpu_to_be32(FW_LEN16(vi_cmd)); vi_cmd.type_viid = cpu_to_be16(FW_VI_CMD_VIID(pi->viid)); v = t4vf_wr_mbox(adapter, &vi_cmd, sizeof(vi_cmd), &vi_rpl); if (v) return v; BUG_ON(pi->port_id != FW_VI_CMD_PORTID_GET(vi_rpl.portid_pkd)); pi->rss_size = FW_VI_CMD_RSSSIZE_GET(be16_to_cpu(vi_rpl.rsssize_pkd)); t4_os_set_hw_addr(adapter, pidx, vi_rpl.mac); /* * If we don't have read access to our port information, we're done * now. Otherwise, execute a PORT Read command to get it ... */ if (!(adapter->params.vfres.r_caps & FW_CMD_CAP_PORT)) return 0; memset(&port_cmd, 0, sizeof(port_cmd)); port_cmd.op_to_portid = cpu_to_be32(FW_CMD_OP(FW_PORT_CMD) | FW_CMD_REQUEST | FW_CMD_READ | FW_PORT_CMD_PORTID(pi->port_id)); port_cmd.action_to_len16 = cpu_to_be32(FW_PORT_CMD_ACTION(FW_PORT_ACTION_GET_PORT_INFO) | FW_LEN16(port_cmd)); v = t4vf_wr_mbox(adapter, &port_cmd, sizeof(port_cmd), &port_rpl); if (v) return v; v = 0; word = be16_to_cpu(port_rpl.u.info.pcap); if (word & FW_PORT_CAP_SPEED_100M) v |= SUPPORTED_100baseT_Full; if (word & FW_PORT_CAP_SPEED_1G) v |= SUPPORTED_1000baseT_Full; if (word & FW_PORT_CAP_SPEED_10G) v |= SUPPORTED_10000baseT_Full; if (word & FW_PORT_CAP_ANEG) v |= SUPPORTED_Autoneg; init_link_config(&pi->link_cfg, v); return 0; } /** * t4vf_query_params - query FW or device parameters * @adapter: the adapter * @nparams: the number of parameters * @params: the parameter names * @vals: the parameter values * * Reads the values of firmware or device parameters. Up to 7 parameters * can be queried at once. */ int t4vf_query_params(struct adapter *adapter, unsigned int nparams, const u32 *params, u32 *vals) { int i, ret; struct fw_params_cmd cmd, rpl; struct fw_params_param *p; size_t len16; if (nparams > 7) return -EINVAL; memset(&cmd, 0, sizeof(cmd)); cmd.op_to_vfn = cpu_to_be32(FW_CMD_OP(FW_PARAMS_CMD) | FW_CMD_REQUEST | FW_CMD_READ); len16 = DIV_ROUND_UP(offsetof(struct fw_params_cmd, param[nparams].mnem), 16); cmd.retval_len16 = cpu_to_be32(FW_CMD_LEN16(len16)); for (i = 0, p = &cmd.param[0]; i < nparams; i++, p++) p->mnem = htonl(*params++); ret = t4vf_wr_mbox(adapter, &cmd, sizeof(cmd), &rpl); if (ret == 0) for (i = 0, p = &rpl.param[0]; i < nparams; i++, p++) *vals++ = be32_to_cpu(p->val); return ret; } /** * t4vf_set_params - sets FW or device parameters * @adapter: the adapter * @nparams: the number of parameters * @params: the parameter names * @vals: the parameter values * * Sets the values of firmware or device parameters. Up to 7 parameters * can be specified at once. */ int t4vf_set_params(struct adapter *adapter, unsigned int nparams, const u32 *params, const u32 *vals) { int i; struct fw_params_cmd cmd; struct fw_params_param *p; size_t len16; if (nparams > 7) return -EINVAL; memset(&cmd, 0, sizeof(cmd)); cmd.op_to_vfn = cpu_to_be32(FW_CMD_OP(FW_PARAMS_CMD) | FW_CMD_REQUEST | FW_CMD_WRITE); len16 = DIV_ROUND_UP(offsetof(struct fw_params_cmd, param[nparams]), 16); cmd.retval_len16 = cpu_to_be32(FW_CMD_LEN16(len16)); for (i = 0, p = &cmd.param[0]; i < nparams; i++, p++) { p->mnem = cpu_to_be32(*params++); p->val = cpu_to_be32(*vals++); } return t4vf_wr_mbox(adapter, &cmd, sizeof(cmd), NULL); } /** * t4vf_get_sge_params - retrieve adapter Scatter gather Engine parameters * @adapter: the adapter * * Retrieves various core SGE parameters in the form of hardware SGE * register values. The caller is responsible for decoding these as * needed. The SGE parameters are stored in @adapter->params.sge. */ int t4vf_get_sge_params(struct adapter *adapter) { struct sge_params *sge_params = &adapter->params.sge; u32 params[7], vals[7]; int v; params[0] = (FW_PARAMS_MNEM(FW_PARAMS_MNEM_REG) | FW_PARAMS_PARAM_XYZ(SGE_CONTROL)); params[1] = (FW_PARAMS_MNEM(FW_PARAMS_MNEM_REG) | FW_PARAMS_PARAM_XYZ(SGE_HOST_PAGE_SIZE)); params[2] = (FW_PARAMS_MNEM(FW_PARAMS_MNEM_REG) | FW_PARAMS_PARAM_XYZ(SGE_FL_BUFFER_SIZE0)); params[3] = (FW_PARAMS_MNEM(FW_PARAMS_MNEM_REG) | FW_PARAMS_PARAM_XYZ(SGE_FL_BUFFER_SIZE1)); params[4] = (FW_PARAMS_MNEM(FW_PARAMS_MNEM_REG) | FW_PARAMS_PARAM_XYZ(SGE_TIMER_VALUE_0_AND_1)); params[5] = (FW_PARAMS_MNEM(FW_PARAMS_MNEM_REG) | FW_PARAMS_PARAM_XYZ(SGE_TIMER_VALUE_2_AND_3)); params[6] = (FW_PARAMS_MNEM(FW_PARAMS_MNEM_REG) | FW_PARAMS_PARAM_XYZ(SGE_TIMER_VALUE_4_AND_5)); v = t4vf_query_params(adapter, 7, params, vals); if (v) return v; sge_params->sge_control = vals[0]; sge_params->sge_host_page_size = vals[1]; sge_params->sge_fl_buffer_size[0] = vals[2]; sge_params->sge_fl_buffer_size[1] = vals[3]; sge_params->sge_timer_value_0_and_1 = vals[4]; sge_params->sge_timer_value_2_and_3 = vals[5]; sge_params->sge_timer_value_4_and_5 = vals[6]; params[0] = (FW_PARAMS_MNEM(FW_PARAMS_MNEM_REG) | FW_PARAMS_PARAM_XYZ(SGE_INGRESS_RX_THRESHOLD)); v = t4vf_query_params(adapter, 1, params, vals); if (v) return v; sge_params->sge_ingress_rx_threshold = vals[0]; return 0; } /** * t4vf_get_vpd_params - retrieve device VPD paremeters * @adapter: the adapter * * Retrives various device Vital Product Data parameters. The parameters * are stored in @adapter->params.vpd. */ int t4vf_get_vpd_params(struct adapter *adapter) { struct vpd_params *vpd_params = &adapter->params.vpd; u32 params[7], vals[7]; int v; params[0] = (FW_PARAMS_MNEM(FW_PARAMS_MNEM_DEV) | FW_PARAMS_PARAM_X(FW_PARAMS_PARAM_DEV_CCLK)); v = t4vf_query_params(adapter, 1, params, vals); if (v) return v; vpd_params->cclk = vals[0]; return 0; } /** * t4vf_get_dev_params - retrieve device paremeters * @adapter: the adapter * * Retrives various device parameters. The parameters are stored in * @adapter->params.dev. */ int t4vf_get_dev_params(struct adapter *adapter) { struct dev_params *dev_params = &adapter->params.dev; u32 params[7], vals[7]; int v; params[0] = (FW_PARAMS_MNEM(FW_PARAMS_MNEM_DEV) | FW_PARAMS_PARAM_X(FW_PARAMS_PARAM_DEV_FWREV)); params[1] = (FW_PARAMS_MNEM(FW_PARAMS_MNEM_DEV) | FW_PARAMS_PARAM_X(FW_PARAMS_PARAM_DEV_TPREV)); v = t4vf_query_params(adapter, 2, params, vals); if (v) return v; dev_params->fwrev = vals[0]; dev_params->tprev = vals[1]; return 0; } /** * t4vf_get_rss_glb_config - retrieve adapter RSS Global Configuration * @adapter: the adapter * * Retrieves global RSS mode and parameters with which we have to live * and stores them in the @adapter's RSS parameters. */ int t4vf_get_rss_glb_config(struct adapter *adapter) { struct rss_params *rss = &adapter->params.rss; struct fw_rss_glb_config_cmd cmd, rpl; int v; /* * Execute an RSS Global Configuration read command to retrieve * our RSS configuration. */ memset(&cmd, 0, sizeof(cmd)); cmd.op_to_write = cpu_to_be32(FW_CMD_OP(FW_RSS_GLB_CONFIG_CMD) | FW_CMD_REQUEST | FW_CMD_READ); cmd.retval_len16 = cpu_to_be32(FW_LEN16(cmd)); v = t4vf_wr_mbox(adapter, &cmd, sizeof(cmd), &rpl); if (v) return v; /* * Transate the big-endian RSS Global Configuration into our * cpu-endian format based on the RSS mode. We also do first level * filtering at this point to weed out modes which don't support * VF Drivers ... */ rss->mode = FW_RSS_GLB_CONFIG_CMD_MODE_GET( be32_to_cpu(rpl.u.manual.mode_pkd)); switch (rss->mode) { case FW_RSS_GLB_CONFIG_CMD_MODE_BASICVIRTUAL: { u32 word = be32_to_cpu( rpl.u.basicvirtual.synmapen_to_hashtoeplitz); rss->u.basicvirtual.synmapen = ((word & FW_RSS_GLB_CONFIG_CMD_SYNMAPEN) != 0); rss->u.basicvirtual.syn4tupenipv6 = ((word & FW_RSS_GLB_CONFIG_CMD_SYN4TUPENIPV6) != 0); rss->u.basicvirtual.syn2tupenipv6 = ((word & FW_RSS_GLB_CONFIG_CMD_SYN2TUPENIPV6) != 0); rss->u.basicvirtual.syn4tupenipv4 = ((word & FW_RSS_GLB_CONFIG_CMD_SYN4TUPENIPV4) != 0); rss->u.basicvirtual.syn2tupenipv4 = ((word & FW_RSS_GLB_CONFIG_CMD_SYN2TUPENIPV4) != 0); rss->u.basicvirtual.ofdmapen = ((word & FW_RSS_GLB_CONFIG_CMD_OFDMAPEN) != 0); rss->u.basicvirtual.tnlmapen = ((word & FW_RSS_GLB_CONFIG_CMD_TNLMAPEN) != 0); rss->u.basicvirtual.tnlalllookup = ((word & FW_RSS_GLB_CONFIG_CMD_TNLALLLKP) != 0); rss->u.basicvirtual.hashtoeplitz = ((word & FW_RSS_GLB_CONFIG_CMD_HASHTOEPLITZ) != 0); /* we need at least Tunnel Map Enable to be set */ if (!rss->u.basicvirtual.tnlmapen) return -EINVAL; break; } default: /* all unknown/unsupported RSS modes result in an error */ return -EINVAL; } return 0; } /** * t4vf_get_vfres - retrieve VF resource limits * @adapter: the adapter * * Retrieves configured resource limits and capabilities for a virtual * function. The results are stored in @adapter->vfres. */ int t4vf_get_vfres(struct adapter *adapter) { struct vf_resources *vfres = &adapter->params.vfres; struct fw_pfvf_cmd cmd, rpl; int v; u32 word; /* * Execute PFVF Read command to get VF resource limits; bail out early * with error on command failure. */ memset(&cmd, 0, sizeof(cmd)); cmd.op_to_vfn = cpu_to_be32(FW_CMD_OP(FW_PFVF_CMD) | FW_CMD_REQUEST | FW_CMD_READ); cmd.retval_len16 = cpu_to_be32(FW_LEN16(cmd)); v = t4vf_wr_mbox(adapter, &cmd, sizeof(cmd), &rpl); if (v) return v; /* * Extract VF resource limits and return success. */ word = be32_to_cpu(rpl.niqflint_niq); vfres->niqflint = FW_PFVF_CMD_NIQFLINT_GET(word); vfres->niq = FW_PFVF_CMD_NIQ_GET(word); word = be32_to_cpu(rpl.type_to_neq); vfres->neq = FW_PFVF_CMD_NEQ_GET(word); vfres->pmask = FW_PFVF_CMD_PMASK_GET(word); word = be32_to_cpu(rpl.tc_to_nexactf); vfres->tc = FW_PFVF_CMD_TC_GET(word); vfres->nvi = FW_PFVF_CMD_NVI_GET(word); vfres->nexactf = FW_PFVF_CMD_NEXACTF_GET(word); word = be32_to_cpu(rpl.r_caps_to_nethctrl); vfres->r_caps = FW_PFVF_CMD_R_CAPS_GET(word); vfres->wx_caps = FW_PFVF_CMD_WX_CAPS_GET(word); vfres->nethctrl = FW_PFVF_CMD_NETHCTRL_GET(word); return 0; } /** * t4vf_read_rss_vi_config - read a VI's RSS configuration * @adapter: the adapter * @viid: Virtual Interface ID * @config: pointer to host-native VI RSS Configuration buffer * * Reads the Virtual Interface's RSS configuration information and * translates it into CPU-native format. */ int t4vf_read_rss_vi_config(struct adapter *adapter, unsigned int viid, union rss_vi_config *config) { struct fw_rss_vi_config_cmd cmd, rpl; int v; memset(&cmd, 0, sizeof(cmd)); cmd.op_to_viid = cpu_to_be32(FW_CMD_OP(FW_RSS_VI_CONFIG_CMD) | FW_CMD_REQUEST | FW_CMD_READ | FW_RSS_VI_CONFIG_CMD_VIID(viid)); cmd.retval_len16 = cpu_to_be32(FW_LEN16(cmd)); v = t4vf_wr_mbox(adapter, &cmd, sizeof(cmd), &rpl); if (v) return v; switch (adapter->params.rss.mode) { case FW_RSS_GLB_CONFIG_CMD_MODE_BASICVIRTUAL: { u32 word = be32_to_cpu(rpl.u.basicvirtual.defaultq_to_udpen); config->basicvirtual.ip6fourtupen = ((word & FW_RSS_VI_CONFIG_CMD_IP6FOURTUPEN) != 0); config->basicvirtual.ip6twotupen = ((word & FW_RSS_VI_CONFIG_CMD_IP6TWOTUPEN) != 0); config->basicvirtual.ip4fourtupen = ((word & FW_RSS_VI_CONFIG_CMD_IP4FOURTUPEN) != 0); config->basicvirtual.ip4twotupen = ((word & FW_RSS_VI_CONFIG_CMD_IP4TWOTUPEN) != 0); config->basicvirtual.udpen = ((word & FW_RSS_VI_CONFIG_CMD_UDPEN) != 0); config->basicvirtual.defaultq = FW_RSS_VI_CONFIG_CMD_DEFAULTQ_GET(word); break; } default: return -EINVAL; } return 0; } /** * t4vf_write_rss_vi_config - write a VI's RSS configuration * @adapter: the adapter * @viid: Virtual Interface ID * @config: pointer to host-native VI RSS Configuration buffer * * Write the Virtual Interface's RSS configuration information * (translating it into firmware-native format before writing). */ int t4vf_write_rss_vi_config(struct adapter *adapter, unsigned int viid, union rss_vi_config *config) { struct fw_rss_vi_config_cmd cmd, rpl; memset(&cmd, 0, sizeof(cmd)); cmd.op_to_viid = cpu_to_be32(FW_CMD_OP(FW_RSS_VI_CONFIG_CMD) | FW_CMD_REQUEST | FW_CMD_WRITE | FW_RSS_VI_CONFIG_CMD_VIID(viid)); cmd.retval_len16 = cpu_to_be32(FW_LEN16(cmd)); switch (adapter->params.rss.mode) { case FW_RSS_GLB_CONFIG_CMD_MODE_BASICVIRTUAL: { u32 word = 0; if (config->basicvirtual.ip6fourtupen) word |= FW_RSS_VI_CONFIG_CMD_IP6FOURTUPEN; if (config->basicvirtual.ip6twotupen) word |= FW_RSS_VI_CONFIG_CMD_IP6TWOTUPEN; if (config->basicvirtual.ip4fourtupen) word |= FW_RSS_VI_CONFIG_CMD_IP4FOURTUPEN; if (config->basicvirtual.ip4twotupen) word |= FW_RSS_VI_CONFIG_CMD_IP4TWOTUPEN; if (config->basicvirtual.udpen) word |= FW_RSS_VI_CONFIG_CMD_UDPEN; word |= FW_RSS_VI_CONFIG_CMD_DEFAULTQ( config->basicvirtual.defaultq); cmd.u.basicvirtual.defaultq_to_udpen = cpu_to_be32(word); break; } default: return -EINVAL; } return t4vf_wr_mbox(adapter, &cmd, sizeof(cmd), &rpl); } /** * t4vf_config_rss_range - configure a portion of the RSS mapping table * @adapter: the adapter * @viid: Virtual Interface of RSS Table Slice * @start: starting entry in the table to write * @n: how many table entries to write * @rspq: values for the "Response Queue" (Ingress Queue) lookup table * @nrspq: number of values in @rspq * * Programs the selected part of the VI's RSS mapping table with the * provided values. If @nrspq < @n the supplied values are used repeatedly * until the full table range is populated. * * The caller must ensure the values in @rspq are in the range 0..1023. */ int t4vf_config_rss_range(struct adapter *adapter, unsigned int viid, int start, int n, const u16 *rspq, int nrspq) { const u16 *rsp = rspq; const u16 *rsp_end = rspq+nrspq; struct fw_rss_ind_tbl_cmd cmd; /* * Initialize firmware command template to write the RSS table. */ memset(&cmd, 0, sizeof(cmd)); cmd.op_to_viid = cpu_to_be32(FW_CMD_OP(FW_RSS_IND_TBL_CMD) | FW_CMD_REQUEST | FW_CMD_WRITE | FW_RSS_IND_TBL_CMD_VIID(viid)); cmd.retval_len16 = cpu_to_be32(FW_LEN16(cmd)); /* * Each firmware RSS command can accommodate up to 32 RSS Ingress * Queue Identifiers. These Ingress Queue IDs are packed three to * a 32-bit word as 10-bit values with the upper remaining 2 bits * reserved. */ while (n > 0) { __be32 *qp = &cmd.iq0_to_iq2; int nq = min(n, 32); int ret; /* * Set up the firmware RSS command header to send the next * "nq" Ingress Queue IDs to the firmware. */ cmd.niqid = cpu_to_be16(nq); cmd.startidx = cpu_to_be16(start); /* * "nq" more done for the start of the next loop. */ start += nq; n -= nq; /* * While there are still Ingress Queue IDs to stuff into the * current firmware RSS command, retrieve them from the * Ingress Queue ID array and insert them into the command. */ while (nq > 0) { /* * Grab up to the next 3 Ingress Queue IDs (wrapping * around the Ingress Queue ID array if necessary) and * insert them into the firmware RSS command at the * current 3-tuple position within the commad. */ u16 qbuf[3]; u16 *qbp = qbuf; int nqbuf = min(3, nq); nq -= nqbuf; qbuf[0] = qbuf[1] = qbuf[2] = 0; while (nqbuf) { nqbuf--; *qbp++ = *rsp++; if (rsp >= rsp_end) rsp = rspq; } *qp++ = cpu_to_be32(FW_RSS_IND_TBL_CMD_IQ0(qbuf[0]) | FW_RSS_IND_TBL_CMD_IQ1(qbuf[1]) | FW_RSS_IND_TBL_CMD_IQ2(qbuf[2])); } /* * Send this portion of the RRS table update to the firmware; * bail out on any errors. */ ret = t4vf_wr_mbox(adapter, &cmd, sizeof(cmd), NULL); if (ret) return ret; } return 0; } /** * t4vf_alloc_vi - allocate a virtual interface on a port * @adapter: the adapter * @port_id: physical port associated with the VI * * Allocate a new Virtual Interface and bind it to the indicated * physical port. Return the new Virtual Interface Identifier on * success, or a [negative] error number on failure. */ int t4vf_alloc_vi(struct adapter *adapter, int port_id) { struct fw_vi_cmd cmd, rpl; int v; /* * Execute a VI command to allocate Virtual Interface and return its * VIID. */ memset(&cmd, 0, sizeof(cmd)); cmd.op_to_vfn = cpu_to_be32(FW_CMD_OP(FW_VI_CMD) | FW_CMD_REQUEST | FW_CMD_WRITE | FW_CMD_EXEC); cmd.alloc_to_len16 = cpu_to_be32(FW_LEN16(cmd) | FW_VI_CMD_ALLOC); cmd.portid_pkd = FW_VI_CMD_PORTID(port_id); v = t4vf_wr_mbox(adapter, &cmd, sizeof(cmd), &rpl); if (v) return v; return FW_VI_CMD_VIID_GET(be16_to_cpu(rpl.type_viid)); } /** * t4vf_free_vi -- free a virtual interface * @adapter: the adapter * @viid: the virtual interface identifier * * Free a previously allocated Virtual Interface. Return an error on * failure. */ int t4vf_free_vi(struct adapter *adapter, int viid) { struct fw_vi_cmd cmd; /* * Execute a VI command to free the Virtual Interface. */ memset(&cmd, 0, sizeof(cmd)); cmd.op_to_vfn = cpu_to_be32(FW_CMD_OP(FW_VI_CMD) | FW_CMD_REQUEST | FW_CMD_EXEC); cmd.alloc_to_len16 = cpu_to_be32(FW_LEN16(cmd) | FW_VI_CMD_FREE); cmd.type_viid = cpu_to_be16(FW_VI_CMD_VIID(viid)); return t4vf_wr_mbox(adapter, &cmd, sizeof(cmd), NULL); } /** * t4vf_enable_vi - enable/disable a virtual interface * @adapter: the adapter * @viid: the Virtual Interface ID * @rx_en: 1=enable Rx, 0=disable Rx * @tx_en: 1=enable Tx, 0=disable Tx * * Enables/disables a virtual interface. */ int t4vf_enable_vi(struct adapter *adapter, unsigned int viid, bool rx_en, bool tx_en) { struct fw_vi_enable_cmd cmd; memset(&cmd, 0, sizeof(cmd)); cmd.op_to_viid = cpu_to_be32(FW_CMD_OP(FW_VI_ENABLE_CMD) | FW_CMD_REQUEST | FW_CMD_EXEC | FW_VI_ENABLE_CMD_VIID(viid)); cmd.ien_to_len16 = cpu_to_be32(FW_VI_ENABLE_CMD_IEN(rx_en) | FW_VI_ENABLE_CMD_EEN(tx_en) | FW_LEN16(cmd)); return t4vf_wr_mbox(adapter, &cmd, sizeof(cmd), NULL); } /** * t4vf_identify_port - identify a VI's port by blinking its LED * @adapter: the adapter * @viid: the Virtual Interface ID * @nblinks: how many times to blink LED at 2.5 Hz * * Identifies a VI's port by blinking its LED. */ int t4vf_identify_port(struct adapter *adapter, unsigned int viid, unsigned int nblinks) { struct fw_vi_enable_cmd cmd; memset(&cmd, 0, sizeof(cmd)); cmd.op_to_viid = cpu_to_be32(FW_CMD_OP(FW_VI_ENABLE_CMD) | FW_CMD_REQUEST | FW_CMD_EXEC | FW_VI_ENABLE_CMD_VIID(viid)); cmd.ien_to_len16 = cpu_to_be32(FW_VI_ENABLE_CMD_LED | FW_LEN16(cmd)); cmd.blinkdur = cpu_to_be16(nblinks); return t4vf_wr_mbox(adapter, &cmd, sizeof(cmd), NULL); } /** * t4vf_set_rxmode - set Rx properties of a virtual interface * @adapter: the adapter * @viid: the VI id * @mtu: the new MTU or -1 for no change * @promisc: 1 to enable promiscuous mode, 0 to disable it, -1 no change * @all_multi: 1 to enable all-multi mode, 0 to disable it, -1 no change * @bcast: 1 to enable broadcast Rx, 0 to disable it, -1 no change * @vlanex: 1 to enable hardware VLAN Tag extraction, 0 to disable it, * -1 no change * * Sets Rx properties of a virtual interface. */ int t4vf_set_rxmode(struct adapter *adapter, unsigned int viid, int mtu, int promisc, int all_multi, int bcast, int vlanex, bool sleep_ok) { struct fw_vi_rxmode_cmd cmd; /* convert to FW values */ if (mtu < 0) mtu = FW_VI_RXMODE_CMD_MTU_MASK; if (promisc < 0) promisc = FW_VI_RXMODE_CMD_PROMISCEN_MASK; if (all_multi < 0) all_multi = FW_VI_RXMODE_CMD_ALLMULTIEN_MASK; if (bcast < 0) bcast = FW_VI_RXMODE_CMD_BROADCASTEN_MASK; if (vlanex < 0) vlanex = FW_VI_RXMODE_CMD_VLANEXEN_MASK; memset(&cmd, 0, sizeof(cmd)); cmd.op_to_viid = cpu_to_be32(FW_CMD_OP(FW_VI_RXMODE_CMD) | FW_CMD_REQUEST | FW_CMD_WRITE | FW_VI_RXMODE_CMD_VIID(viid)); cmd.retval_len16 = cpu_to_be32(FW_LEN16(cmd)); cmd.mtu_to_vlanexen = cpu_to_be32(FW_VI_RXMODE_CMD_MTU(mtu) | FW_VI_RXMODE_CMD_PROMISCEN(promisc) | FW_VI_RXMODE_CMD_ALLMULTIEN(all_multi) | FW_VI_RXMODE_CMD_BROADCASTEN(bcast) | FW_VI_RXMODE_CMD_VLANEXEN(vlanex)); return t4vf_wr_mbox_core(adapter, &cmd, sizeof(cmd), NULL, sleep_ok); } /** * t4vf_alloc_mac_filt - allocates exact-match filters for MAC addresses * @adapter: the adapter * @viid: the Virtual Interface Identifier * @free: if true any existing filters for this VI id are first removed * @naddr: the number of MAC addresses to allocate filters for (up to 7) * @addr: the MAC address(es) * @idx: where to store the index of each allocated filter * @hash: pointer to hash address filter bitmap * @sleep_ok: call is allowed to sleep * * Allocates an exact-match filter for each of the supplied addresses and * sets it to the corresponding address. If @idx is not %NULL it should * have at least @naddr entries, each of which will be set to the index of * the filter allocated for the corresponding MAC address. If a filter * could not be allocated for an address its index is set to 0xffff. * If @hash is not %NULL addresses that fail to allocate an exact filter * are hashed and update the hash filter bitmap pointed at by @hash. * * Returns a negative error number or the number of filters allocated. */ int t4vf_alloc_mac_filt(struct adapter *adapter, unsigned int viid, bool free, unsigned int naddr, const u8 **addr, u16 *idx, u64 *hash, bool sleep_ok) { int i, ret; struct fw_vi_mac_cmd cmd, rpl; struct fw_vi_mac_exact *p; size_t len16; if (naddr > ARRAY_SIZE(cmd.u.exact)) return -EINVAL; len16 = DIV_ROUND_UP(offsetof(struct fw_vi_mac_cmd, u.exact[naddr]), 16); memset(&cmd, 0, sizeof(cmd)); cmd.op_to_viid = cpu_to_be32(FW_CMD_OP(FW_VI_MAC_CMD) | FW_CMD_REQUEST | FW_CMD_WRITE | (free ? FW_CMD_EXEC : 0) | FW_VI_MAC_CMD_VIID(viid)); cmd.freemacs_to_len16 = cpu_to_be32(FW_VI_MAC_CMD_FREEMACS(free) | FW_CMD_LEN16(len16)); for (i = 0, p = cmd.u.exact; i < naddr; i++, p++) { p->valid_to_idx = cpu_to_be16(FW_VI_MAC_CMD_VALID | FW_VI_MAC_CMD_IDX(FW_VI_MAC_ADD_MAC)); memcpy(p->macaddr, addr[i], sizeof(p->macaddr)); } ret = t4vf_wr_mbox_core(adapter, &cmd, sizeof(cmd), &rpl, sleep_ok); if (ret) return ret; for (i = 0, p = rpl.u.exact; i < naddr; i++, p++) { u16 index = FW_VI_MAC_CMD_IDX_GET(be16_to_cpu(p->valid_to_idx)); if (idx) idx[i] = (index >= FW_CLS_TCAM_NUM_ENTRIES ? 0xffff : index); if (index < FW_CLS_TCAM_NUM_ENTRIES) ret++; else if (hash) *hash |= (1 << hash_mac_addr(addr[i])); } return ret; } /** * t4vf_change_mac - modifies the exact-match filter for a MAC address * @adapter: the adapter * @viid: the Virtual Interface ID * @idx: index of existing filter for old value of MAC address, or -1 * @addr: the new MAC address value * @persist: if idx < 0, the new MAC allocation should be persistent * * Modifies an exact-match filter and sets it to the new MAC address. * Note that in general it is not possible to modify the value of a given * filter so the generic way to modify an address filter is to free the * one being used by the old address value and allocate a new filter for * the new address value. @idx can be -1 if the address is a new * addition. * * Returns a negative error number or the index of the filter with the new * MAC value. */ int t4vf_change_mac(struct adapter *adapter, unsigned int viid, int idx, const u8 *addr, bool persist) { int ret; struct fw_vi_mac_cmd cmd, rpl; struct fw_vi_mac_exact *p = &cmd.u.exact[0]; size_t len16 = DIV_ROUND_UP(offsetof(struct fw_vi_mac_cmd, u.exact[1]), 16); /* * If this is a new allocation, determine whether it should be * persistent (across a "freemacs" operation) or not. */ if (idx < 0) idx = persist ? FW_VI_MAC_ADD_PERSIST_MAC : FW_VI_MAC_ADD_MAC; memset(&cmd, 0, sizeof(cmd)); cmd.op_to_viid = cpu_to_be32(FW_CMD_OP(FW_VI_MAC_CMD) | FW_CMD_REQUEST | FW_CMD_WRITE | FW_VI_MAC_CMD_VIID(viid)); cmd.freemacs_to_len16 = cpu_to_be32(FW_CMD_LEN16(len16)); p->valid_to_idx = cpu_to_be16(FW_VI_MAC_CMD_VALID | FW_VI_MAC_CMD_IDX(idx)); memcpy(p->macaddr, addr, sizeof(p->macaddr)); ret = t4vf_wr_mbox(adapter, &cmd, sizeof(cmd), &rpl); if (ret == 0) { p = &rpl.u.exact[0]; ret = FW_VI_MAC_CMD_IDX_GET(be16_to_cpu(p->valid_to_idx)); if (ret >= FW_CLS_TCAM_NUM_ENTRIES) ret = -ENOMEM; } return ret; } /** * t4vf_set_addr_hash - program the MAC inexact-match hash filter * @adapter: the adapter * @viid: the Virtual Interface Identifier * @ucast: whether the hash filter should also match unicast addresses * @vec: the value to be written to the hash filter * @sleep_ok: call is allowed to sleep * * Sets the 64-bit inexact-match hash filter for a virtual interface. */ int t4vf_set_addr_hash(struct adapter *adapter, unsigned int viid, bool ucast, u64 vec, bool sleep_ok) { struct fw_vi_mac_cmd cmd; size_t len16 = DIV_ROUND_UP(offsetof(struct fw_vi_mac_cmd, u.exact[0]), 16); memset(&cmd, 0, sizeof(cmd)); cmd.op_to_viid = cpu_to_be32(FW_CMD_OP(FW_VI_MAC_CMD) | FW_CMD_REQUEST | FW_CMD_WRITE | FW_VI_ENABLE_CMD_VIID(viid)); cmd.freemacs_to_len16 = cpu_to_be32(FW_VI_MAC_CMD_HASHVECEN | FW_VI_MAC_CMD_HASHUNIEN(ucast) | FW_CMD_LEN16(len16)); cmd.u.hash.hashvec = cpu_to_be64(vec); return t4vf_wr_mbox_core(adapter, &cmd, sizeof(cmd), NULL, sleep_ok); } /** * t4vf_get_port_stats - collect "port" statistics * @adapter: the adapter * @pidx: the port index * @s: the stats structure to fill * * Collect statistics for the "port"'s Virtual Interface. */ int t4vf_get_port_stats(struct adapter *adapter, int pidx, struct t4vf_port_stats *s) { struct port_info *pi = adap2pinfo(adapter, pidx); struct fw_vi_stats_vf fwstats; unsigned int rem = VI_VF_NUM_STATS; __be64 *fwsp = (__be64 *)&fwstats; /* * Grab the Virtual Interface statistics a chunk at a time via mailbox * commands. We could use a Work Request and get all of them at once * but that's an asynchronous interface which is awkward to use. */ while (rem) { unsigned int ix = VI_VF_NUM_STATS - rem; unsigned int nstats = min(6U, rem); struct fw_vi_stats_cmd cmd, rpl; size_t len = (offsetof(struct fw_vi_stats_cmd, u) + sizeof(struct fw_vi_stats_ctl)); size_t len16 = DIV_ROUND_UP(len, 16); int ret; memset(&cmd, 0, sizeof(cmd)); cmd.op_to_viid = cpu_to_be32(FW_CMD_OP(FW_VI_STATS_CMD) | FW_VI_STATS_CMD_VIID(pi->viid) | FW_CMD_REQUEST | FW_CMD_READ); cmd.retval_len16 = cpu_to_be32(FW_CMD_LEN16(len16)); cmd.u.ctl.nstats_ix = cpu_to_be16(FW_VI_STATS_CMD_IX(ix) | FW_VI_STATS_CMD_NSTATS(nstats)); ret = t4vf_wr_mbox_ns(adapter, &cmd, len, &rpl); if (ret) return ret; memcpy(fwsp, &rpl.u.ctl.stat0, sizeof(__be64) * nstats); rem -= nstats; fwsp += nstats; } /* * Translate firmware statistics into host native statistics. */ s->tx_bcast_bytes = be64_to_cpu(fwstats.tx_bcast_bytes); s->tx_bcast_frames = be64_to_cpu(fwstats.tx_bcast_frames); s->tx_mcast_bytes = be64_to_cpu(fwstats.tx_mcast_bytes); s->tx_mcast_frames = be64_to_cpu(fwstats.tx_mcast_frames); s->tx_ucast_bytes = be64_to_cpu(fwstats.tx_ucast_bytes); s->tx_ucast_frames = be64_to_cpu(fwstats.tx_ucast_frames); s->tx_drop_frames = be64_to_cpu(fwstats.tx_drop_frames); s->tx_offload_bytes = be64_to_cpu(fwstats.tx_offload_bytes); s->tx_offload_frames = be64_to_cpu(fwstats.tx_offload_frames); s->rx_bcast_bytes = be64_to_cpu(fwstats.rx_bcast_bytes); s->rx_bcast_frames = be64_to_cpu(fwstats.rx_bcast_frames); s->rx_mcast_bytes = be64_to_cpu(fwstats.rx_mcast_bytes); s->rx_mcast_frames = be64_to_cpu(fwstats.rx_mcast_frames); s->rx_ucast_bytes = be64_to_cpu(fwstats.rx_ucast_bytes); s->rx_ucast_frames = be64_to_cpu(fwstats.rx_ucast_frames); s->rx_err_frames = be64_to_cpu(fwstats.rx_err_frames); return 0; } /** * t4vf_iq_free - free an ingress queue and its free lists * @adapter: the adapter * @iqtype: the ingress queue type (FW_IQ_TYPE_FL_INT_CAP, etc.) * @iqid: ingress queue ID * @fl0id: FL0 queue ID or 0xffff if no attached FL0 * @fl1id: FL1 queue ID or 0xffff if no attached FL1 * * Frees an ingress queue and its associated free lists, if any. */ int t4vf_iq_free(struct adapter *adapter, unsigned int iqtype, unsigned int iqid, unsigned int fl0id, unsigned int fl1id) { struct fw_iq_cmd cmd; memset(&cmd, 0, sizeof(cmd)); cmd.op_to_vfn = cpu_to_be32(FW_CMD_OP(FW_IQ_CMD) | FW_CMD_REQUEST | FW_CMD_EXEC); cmd.alloc_to_len16 = cpu_to_be32(FW_IQ_CMD_FREE | FW_LEN16(cmd)); cmd.type_to_iqandstindex = cpu_to_be32(FW_IQ_CMD_TYPE(iqtype)); cmd.iqid = cpu_to_be16(iqid); cmd.fl0id = cpu_to_be16(fl0id); cmd.fl1id = cpu_to_be16(fl1id); return t4vf_wr_mbox(adapter, &cmd, sizeof(cmd), NULL); } /** * t4vf_eth_eq_free - free an Ethernet egress queue * @adapter: the adapter * @eqid: egress queue ID * * Frees an Ethernet egress queue. */ int t4vf_eth_eq_free(struct adapter *adapter, unsigned int eqid) { struct fw_eq_eth_cmd cmd; memset(&cmd, 0, sizeof(cmd)); cmd.op_to_vfn = cpu_to_be32(FW_CMD_OP(FW_EQ_ETH_CMD) | FW_CMD_REQUEST | FW_CMD_EXEC); cmd.alloc_to_len16 = cpu_to_be32(FW_EQ_ETH_CMD_FREE | FW_LEN16(cmd)); cmd.eqid_pkd = cpu_to_be32(FW_EQ_ETH_CMD_EQID(eqid)); return t4vf_wr_mbox(adapter, &cmd, sizeof(cmd), NULL); } /** * t4vf_handle_fw_rpl - process a firmware reply message * @adapter: the adapter * @rpl: start of the firmware message * * Processes a firmware message, such as link state change messages. */ int t4vf_handle_fw_rpl(struct adapter *adapter, const __be64 *rpl) { struct fw_cmd_hdr *cmd_hdr = (struct fw_cmd_hdr *)rpl; u8 opcode = FW_CMD_OP_GET(be32_to_cpu(cmd_hdr->hi)); switch (opcode) { case FW_PORT_CMD: { /* * Link/module state change message. */ const struct fw_port_cmd *port_cmd = (void *)rpl; u32 word; int action, port_id, link_ok, speed, fc, pidx; /* * Extract various fields from port status change message. */ action = FW_PORT_CMD_ACTION_GET( be32_to_cpu(port_cmd->action_to_len16)); if (action != FW_PORT_ACTION_GET_PORT_INFO) { dev_err(adapter->pdev_dev, "Unknown firmware PORT reply action %x\n", action); break; } port_id = FW_PORT_CMD_PORTID_GET( be32_to_cpu(port_cmd->op_to_portid)); word = be32_to_cpu(port_cmd->u.info.lstatus_to_modtype); link_ok = (word & FW_PORT_CMD_LSTATUS) != 0; speed = 0; fc = 0; if (word & FW_PORT_CMD_RXPAUSE) fc |= PAUSE_RX; if (word & FW_PORT_CMD_TXPAUSE) fc |= PAUSE_TX; if (word & FW_PORT_CMD_LSPEED(FW_PORT_CAP_SPEED_100M)) speed = SPEED_100; else if (word & FW_PORT_CMD_LSPEED(FW_PORT_CAP_SPEED_1G)) speed = SPEED_1000; else if (word & FW_PORT_CMD_LSPEED(FW_PORT_CAP_SPEED_10G)) speed = SPEED_10000; /* * Scan all of our "ports" (Virtual Interfaces) looking for * those bound to the physical port which has changed. If * our recorded state doesn't match the current state, * signal that change to the OS code. */ for_each_port(adapter, pidx) { struct port_info *pi = adap2pinfo(adapter, pidx); struct link_config *lc; if (pi->port_id != port_id) continue; lc = &pi->link_cfg; if (link_ok != lc->link_ok || speed != lc->speed || fc != lc->fc) { /* something changed */ lc->link_ok = link_ok; lc->speed = speed; lc->fc = fc; t4vf_os_link_changed(adapter, pidx, link_ok); } } break; } default: dev_err(adapter->pdev_dev, "Unknown firmware reply %X\n", opcode); } return 0; }