/******************************************************************************* * * Intel Ethernet Controller XL710 Family Linux Driver * Copyright(c) 2013 Intel Corporation. * * This program is free software; you can redistribute it and/or modify it * under the terms and conditions of the GNU General Public License, * version 2, as published by the Free Software Foundation. * * This program is distributed in the hope it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for * more details. * * You should have received a copy of the GNU General Public License along with * this program; if not, write to the Free Software Foundation, Inc., * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. * * The full GNU General Public License is included in this distribution in * the file called "COPYING". * * Contact Information: * e1000-devel Mailing List * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 * ******************************************************************************/ #include "i40e.h" /***********************misc routines*****************************/ /** * i40e_vc_isvalid_vsi_id * @vf: pointer to the vf info * @vsi_id: vf relative vsi id * * check for the valid vsi id **/ static inline bool i40e_vc_isvalid_vsi_id(struct i40e_vf *vf, u8 vsi_id) { struct i40e_pf *pf = vf->pf; return pf->vsi[vsi_id]->vf_id == vf->vf_id; } /** * i40e_vc_isvalid_queue_id * @vf: pointer to the vf info * @vsi_id: vsi id * @qid: vsi relative queue id * * check for the valid queue id **/ static inline bool i40e_vc_isvalid_queue_id(struct i40e_vf *vf, u8 vsi_id, u8 qid) { struct i40e_pf *pf = vf->pf; return qid < pf->vsi[vsi_id]->num_queue_pairs; } /** * i40e_vc_isvalid_vector_id * @vf: pointer to the vf info * @vector_id: vf relative vector id * * check for the valid vector id **/ static inline bool i40e_vc_isvalid_vector_id(struct i40e_vf *vf, u8 vector_id) { struct i40e_pf *pf = vf->pf; return vector_id <= pf->hw.func_caps.num_msix_vectors_vf; } /***********************vf resource mgmt routines*****************/ /** * i40e_vc_get_pf_queue_id * @vf: pointer to the vf info * @vsi_idx: index of VSI in PF struct * @vsi_queue_id: vsi relative queue id * * return pf relative queue id **/ static u16 i40e_vc_get_pf_queue_id(struct i40e_vf *vf, u8 vsi_idx, u8 vsi_queue_id) { struct i40e_pf *pf = vf->pf; struct i40e_vsi *vsi = pf->vsi[vsi_idx]; u16 pf_queue_id = I40E_QUEUE_END_OF_LIST; if (le16_to_cpu(vsi->info.mapping_flags) & I40E_AQ_VSI_QUE_MAP_NONCONTIG) pf_queue_id = le16_to_cpu(vsi->info.queue_mapping[vsi_queue_id]); else pf_queue_id = le16_to_cpu(vsi->info.queue_mapping[0]) + vsi_queue_id; return pf_queue_id; } /** * i40e_config_irq_link_list * @vf: pointer to the vf info * @vsi_idx: index of VSI in PF struct * @vecmap: irq map info * * configure irq link list from the map **/ static void i40e_config_irq_link_list(struct i40e_vf *vf, u16 vsi_idx, struct i40e_virtchnl_vector_map *vecmap) { unsigned long linklistmap = 0, tempmap; struct i40e_pf *pf = vf->pf; struct i40e_hw *hw = &pf->hw; u16 vsi_queue_id, pf_queue_id; enum i40e_queue_type qtype; u16 next_q, vector_id; u32 reg, reg_idx; u16 itr_idx = 0; vector_id = vecmap->vector_id; /* setup the head */ if (0 == vector_id) reg_idx = I40E_VPINT_LNKLST0(vf->vf_id); else reg_idx = I40E_VPINT_LNKLSTN( (pf->hw.func_caps.num_msix_vectors_vf * vf->vf_id) + (vector_id - 1)); if (vecmap->rxq_map == 0 && vecmap->txq_map == 0) { /* Special case - No queues mapped on this vector */ wr32(hw, reg_idx, I40E_VPINT_LNKLST0_FIRSTQ_INDX_MASK); goto irq_list_done; } tempmap = vecmap->rxq_map; for_each_set_bit(vsi_queue_id, &tempmap, I40E_MAX_VSI_QP) { linklistmap |= (1 << (I40E_VIRTCHNL_SUPPORTED_QTYPES * vsi_queue_id)); } tempmap = vecmap->txq_map; for_each_set_bit(vsi_queue_id, &tempmap, I40E_MAX_VSI_QP) { linklistmap |= (1 << (I40E_VIRTCHNL_SUPPORTED_QTYPES * vsi_queue_id + 1)); } next_q = find_first_bit(&linklistmap, (I40E_MAX_VSI_QP * I40E_VIRTCHNL_SUPPORTED_QTYPES)); vsi_queue_id = next_q/I40E_VIRTCHNL_SUPPORTED_QTYPES; qtype = next_q%I40E_VIRTCHNL_SUPPORTED_QTYPES; pf_queue_id = i40e_vc_get_pf_queue_id(vf, vsi_idx, vsi_queue_id); reg = ((qtype << I40E_VPINT_LNKLSTN_FIRSTQ_TYPE_SHIFT) | pf_queue_id); wr32(hw, reg_idx, reg); while (next_q < (I40E_MAX_VSI_QP * I40E_VIRTCHNL_SUPPORTED_QTYPES)) { switch (qtype) { case I40E_QUEUE_TYPE_RX: reg_idx = I40E_QINT_RQCTL(pf_queue_id); itr_idx = vecmap->rxitr_idx; break; case I40E_QUEUE_TYPE_TX: reg_idx = I40E_QINT_TQCTL(pf_queue_id); itr_idx = vecmap->txitr_idx; break; default: break; } next_q = find_next_bit(&linklistmap, (I40E_MAX_VSI_QP * I40E_VIRTCHNL_SUPPORTED_QTYPES), next_q + 1); if (next_q < (I40E_MAX_VSI_QP * I40E_VIRTCHNL_SUPPORTED_QTYPES)) { vsi_queue_id = next_q / I40E_VIRTCHNL_SUPPORTED_QTYPES; qtype = next_q % I40E_VIRTCHNL_SUPPORTED_QTYPES; pf_queue_id = i40e_vc_get_pf_queue_id(vf, vsi_idx, vsi_queue_id); } else { pf_queue_id = I40E_QUEUE_END_OF_LIST; qtype = 0; } /* format for the RQCTL & TQCTL regs is same */ reg = (vector_id) | (qtype << I40E_QINT_RQCTL_NEXTQ_TYPE_SHIFT) | (pf_queue_id << I40E_QINT_RQCTL_NEXTQ_INDX_SHIFT) | (1 << I40E_QINT_RQCTL_CAUSE_ENA_SHIFT) | (itr_idx << I40E_QINT_RQCTL_ITR_INDX_SHIFT); wr32(hw, reg_idx, reg); } irq_list_done: i40e_flush(hw); } /** * i40e_config_vsi_tx_queue * @vf: pointer to the vf info * @vsi_idx: index of VSI in PF struct * @vsi_queue_id: vsi relative queue index * @info: config. info * * configure tx queue **/ static int i40e_config_vsi_tx_queue(struct i40e_vf *vf, u16 vsi_idx, u16 vsi_queue_id, struct i40e_virtchnl_txq_info *info) { struct i40e_pf *pf = vf->pf; struct i40e_hw *hw = &pf->hw; struct i40e_hmc_obj_txq tx_ctx; u16 pf_queue_id; u32 qtx_ctl; int ret = 0; pf_queue_id = i40e_vc_get_pf_queue_id(vf, vsi_idx, vsi_queue_id); /* clear the context structure first */ memset(&tx_ctx, 0, sizeof(struct i40e_hmc_obj_txq)); /* only set the required fields */ tx_ctx.base = info->dma_ring_addr / 128; tx_ctx.qlen = info->ring_len; tx_ctx.rdylist = le16_to_cpu(pf->vsi[vsi_idx]->info.qs_handle[0]); tx_ctx.rdylist_act = 0; /* clear the context in the HMC */ ret = i40e_clear_lan_tx_queue_context(hw, pf_queue_id); if (ret) { dev_err(&pf->pdev->dev, "Failed to clear VF LAN Tx queue context %d, error: %d\n", pf_queue_id, ret); ret = -ENOENT; goto error_context; } /* set the context in the HMC */ ret = i40e_set_lan_tx_queue_context(hw, pf_queue_id, &tx_ctx); if (ret) { dev_err(&pf->pdev->dev, "Failed to set VF LAN Tx queue context %d error: %d\n", pf_queue_id, ret); ret = -ENOENT; goto error_context; } /* associate this queue with the PCI VF function */ qtx_ctl = I40E_QTX_CTL_VF_QUEUE; qtx_ctl |= ((hw->pf_id << I40E_QTX_CTL_PF_INDX_SHIFT) & I40E_QTX_CTL_PF_INDX_MASK); qtx_ctl |= (((vf->vf_id + hw->func_caps.vf_base_id) << I40E_QTX_CTL_VFVM_INDX_SHIFT) & I40E_QTX_CTL_VFVM_INDX_MASK); wr32(hw, I40E_QTX_CTL(pf_queue_id), qtx_ctl); i40e_flush(hw); error_context: return ret; } /** * i40e_config_vsi_rx_queue * @vf: pointer to the vf info * @vsi_idx: index of VSI in PF struct * @vsi_queue_id: vsi relative queue index * @info: config. info * * configure rx queue **/ static int i40e_config_vsi_rx_queue(struct i40e_vf *vf, u16 vsi_idx, u16 vsi_queue_id, struct i40e_virtchnl_rxq_info *info) { struct i40e_pf *pf = vf->pf; struct i40e_hw *hw = &pf->hw; struct i40e_hmc_obj_rxq rx_ctx; u16 pf_queue_id; int ret = 0; pf_queue_id = i40e_vc_get_pf_queue_id(vf, vsi_idx, vsi_queue_id); /* clear the context structure first */ memset(&rx_ctx, 0, sizeof(struct i40e_hmc_obj_rxq)); /* only set the required fields */ rx_ctx.base = info->dma_ring_addr / 128; rx_ctx.qlen = info->ring_len; if (info->splithdr_enabled) { rx_ctx.hsplit_0 = I40E_RX_SPLIT_L2 | I40E_RX_SPLIT_IP | I40E_RX_SPLIT_TCP_UDP | I40E_RX_SPLIT_SCTP; /* header length validation */ if (info->hdr_size > ((2 * 1024) - 64)) { ret = -EINVAL; goto error_param; } rx_ctx.hbuff = info->hdr_size >> I40E_RXQ_CTX_HBUFF_SHIFT; /* set splitalways mode 10b */ rx_ctx.dtype = 0x2; } /* databuffer length validation */ if (info->databuffer_size > ((16 * 1024) - 128)) { ret = -EINVAL; goto error_param; } rx_ctx.dbuff = info->databuffer_size >> I40E_RXQ_CTX_DBUFF_SHIFT; /* max pkt. length validation */ if (info->max_pkt_size >= (16 * 1024) || info->max_pkt_size < 64) { ret = -EINVAL; goto error_param; } rx_ctx.rxmax = info->max_pkt_size; /* enable 32bytes desc always */ rx_ctx.dsize = 1; /* default values */ rx_ctx.tphrdesc_ena = 1; rx_ctx.tphwdesc_ena = 1; rx_ctx.tphdata_ena = 1; rx_ctx.tphhead_ena = 1; rx_ctx.lrxqthresh = 2; rx_ctx.crcstrip = 1; /* clear the context in the HMC */ ret = i40e_clear_lan_rx_queue_context(hw, pf_queue_id); if (ret) { dev_err(&pf->pdev->dev, "Failed to clear VF LAN Rx queue context %d, error: %d\n", pf_queue_id, ret); ret = -ENOENT; goto error_param; } /* set the context in the HMC */ ret = i40e_set_lan_rx_queue_context(hw, pf_queue_id, &rx_ctx); if (ret) { dev_err(&pf->pdev->dev, "Failed to set VF LAN Rx queue context %d error: %d\n", pf_queue_id, ret); ret = -ENOENT; goto error_param; } error_param: return ret; } /** * i40e_alloc_vsi_res * @vf: pointer to the vf info * @type: type of VSI to allocate * * alloc vf vsi context & resources **/ static int i40e_alloc_vsi_res(struct i40e_vf *vf, enum i40e_vsi_type type) { struct i40e_mac_filter *f = NULL; struct i40e_pf *pf = vf->pf; struct i40e_vsi *vsi; int ret = 0; vsi = i40e_vsi_setup(pf, type, pf->vsi[pf->lan_vsi]->seid, vf->vf_id); if (!vsi) { dev_err(&pf->pdev->dev, "add vsi failed for vf %d, aq_err %d\n", vf->vf_id, pf->hw.aq.asq_last_status); ret = -ENOENT; goto error_alloc_vsi_res; } if (type == I40E_VSI_SRIOV) { u8 brdcast[ETH_ALEN] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff}; vf->lan_vsi_index = vsi->idx; vf->lan_vsi_id = vsi->id; dev_info(&pf->pdev->dev, "LAN VSI index %d, VSI id %d\n", vsi->idx, vsi->id); /* If the port VLAN has been configured and then the * VF driver was removed then the VSI port VLAN * configuration was destroyed. Check if there is * a port VLAN and restore the VSI configuration if * needed. */ if (vf->port_vlan_id) i40e_vsi_add_pvid(vsi, vf->port_vlan_id); f = i40e_add_filter(vsi, vf->default_lan_addr.addr, vf->port_vlan_id, true, false); if (!f) dev_info(&pf->pdev->dev, "Could not allocate VF MAC addr\n"); f = i40e_add_filter(vsi, brdcast, vf->port_vlan_id, true, false); if (!f) dev_info(&pf->pdev->dev, "Could not allocate VF broadcast filter\n"); } if (!f) { dev_err(&pf->pdev->dev, "Unable to add ucast filter\n"); ret = -ENOMEM; goto error_alloc_vsi_res; } /* program mac filter */ ret = i40e_sync_vsi_filters(vsi); if (ret) { dev_err(&pf->pdev->dev, "Unable to program ucast filters\n"); goto error_alloc_vsi_res; } error_alloc_vsi_res: return ret; } /** * i40e_enable_vf_mappings * @vf: pointer to the vf info * * enable vf mappings **/ static void i40e_enable_vf_mappings(struct i40e_vf *vf) { struct i40e_pf *pf = vf->pf; struct i40e_hw *hw = &pf->hw; u32 reg, total_queue_pairs = 0; int j; /* Tell the hardware we're using noncontiguous mapping. HW requires * that VF queues be mapped using this method, even when they are * contiguous in real life */ wr32(hw, I40E_VSILAN_QBASE(vf->lan_vsi_id), I40E_VSILAN_QBASE_VSIQTABLE_ENA_MASK); /* enable VF vplan_qtable mappings */ reg = I40E_VPLAN_MAPENA_TXRX_ENA_MASK; wr32(hw, I40E_VPLAN_MAPENA(vf->vf_id), reg); /* map PF queues to VF queues */ for (j = 0; j < pf->vsi[vf->lan_vsi_index]->num_queue_pairs; j++) { u16 qid = i40e_vc_get_pf_queue_id(vf, vf->lan_vsi_index, j); reg = (qid & I40E_VPLAN_QTABLE_QINDEX_MASK); wr32(hw, I40E_VPLAN_QTABLE(total_queue_pairs, vf->vf_id), reg); total_queue_pairs++; } /* map PF queues to VSI */ for (j = 0; j < 7; j++) { if (j * 2 >= pf->vsi[vf->lan_vsi_index]->num_queue_pairs) { reg = 0x07FF07FF; /* unused */ } else { u16 qid = i40e_vc_get_pf_queue_id(vf, vf->lan_vsi_index, j * 2); reg = qid; qid = i40e_vc_get_pf_queue_id(vf, vf->lan_vsi_index, (j * 2) + 1); reg |= qid << 16; } wr32(hw, I40E_VSILAN_QTABLE(j, vf->lan_vsi_id), reg); } i40e_flush(hw); } /** * i40e_disable_vf_mappings * @vf: pointer to the vf info * * disable vf mappings **/ static void i40e_disable_vf_mappings(struct i40e_vf *vf) { struct i40e_pf *pf = vf->pf; struct i40e_hw *hw = &pf->hw; int i; /* disable qp mappings */ wr32(hw, I40E_VPLAN_MAPENA(vf->vf_id), 0); for (i = 0; i < I40E_MAX_VSI_QP; i++) wr32(hw, I40E_VPLAN_QTABLE(i, vf->vf_id), I40E_QUEUE_END_OF_LIST); i40e_flush(hw); } /** * i40e_free_vf_res * @vf: pointer to the vf info * * free vf resources **/ static void i40e_free_vf_res(struct i40e_vf *vf) { struct i40e_pf *pf = vf->pf; struct i40e_hw *hw = &pf->hw; u32 reg_idx, reg; int i, msix_vf; /* free vsi & disconnect it from the parent uplink */ if (vf->lan_vsi_index) { i40e_vsi_release(pf->vsi[vf->lan_vsi_index]); vf->lan_vsi_index = 0; vf->lan_vsi_id = 0; } msix_vf = pf->hw.func_caps.num_msix_vectors_vf + 1; /* disable interrupts so the VF starts in a known state */ for (i = 0; i < msix_vf; i++) { /* format is same for both registers */ if (0 == i) reg_idx = I40E_VFINT_DYN_CTL0(vf->vf_id); else reg_idx = I40E_VFINT_DYN_CTLN(((msix_vf - 1) * (vf->vf_id)) + (i - 1)); wr32(hw, reg_idx, I40E_VFINT_DYN_CTLN_CLEARPBA_MASK); i40e_flush(hw); } /* clear the irq settings */ for (i = 0; i < msix_vf; i++) { /* format is same for both registers */ if (0 == i) reg_idx = I40E_VPINT_LNKLST0(vf->vf_id); else reg_idx = I40E_VPINT_LNKLSTN(((msix_vf - 1) * (vf->vf_id)) + (i - 1)); reg = (I40E_VPINT_LNKLSTN_FIRSTQ_TYPE_MASK | I40E_VPINT_LNKLSTN_FIRSTQ_INDX_MASK); wr32(hw, reg_idx, reg); i40e_flush(hw); } /* reset some of the state varibles keeping * track of the resources */ vf->num_queue_pairs = 0; vf->vf_states = 0; } /** * i40e_alloc_vf_res * @vf: pointer to the vf info * * allocate vf resources **/ static int i40e_alloc_vf_res(struct i40e_vf *vf) { struct i40e_pf *pf = vf->pf; int total_queue_pairs = 0; int ret; /* allocate hw vsi context & associated resources */ ret = i40e_alloc_vsi_res(vf, I40E_VSI_SRIOV); if (ret) goto error_alloc; total_queue_pairs += pf->vsi[vf->lan_vsi_index]->num_queue_pairs; set_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps); /* store the total qps number for the runtime * vf req validation */ vf->num_queue_pairs = total_queue_pairs; /* vf is now completely initialized */ set_bit(I40E_VF_STAT_INIT, &vf->vf_states); error_alloc: if (ret) i40e_free_vf_res(vf); return ret; } #define VF_DEVICE_STATUS 0xAA #define VF_TRANS_PENDING_MASK 0x20 /** * i40e_quiesce_vf_pci * @vf: pointer to the vf structure * * Wait for VF PCI transactions to be cleared after reset. Returns -EIO * if the transactions never clear. **/ static int i40e_quiesce_vf_pci(struct i40e_vf *vf) { struct i40e_pf *pf = vf->pf; struct i40e_hw *hw = &pf->hw; int vf_abs_id, i; u32 reg; vf_abs_id = vf->vf_id + hw->func_caps.vf_base_id; wr32(hw, I40E_PF_PCI_CIAA, VF_DEVICE_STATUS | (vf_abs_id << I40E_PF_PCI_CIAA_VF_NUM_SHIFT)); for (i = 0; i < 100; i++) { reg = rd32(hw, I40E_PF_PCI_CIAD); if ((reg & VF_TRANS_PENDING_MASK) == 0) return 0; udelay(1); } return -EIO; } /** * i40e_reset_vf * @vf: pointer to the vf structure * @flr: VFLR was issued or not * * reset the vf **/ void i40e_reset_vf(struct i40e_vf *vf, bool flr) { struct i40e_pf *pf = vf->pf; struct i40e_hw *hw = &pf->hw; bool rsd = false; int i; u32 reg; /* warn the VF */ clear_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states); /* In the case of a VFLR, the HW has already reset the VF and we * just need to clean up, so don't hit the VFRTRIG register. */ if (!flr) { /* reset vf using VPGEN_VFRTRIG reg */ reg = rd32(hw, I40E_VPGEN_VFRTRIG(vf->vf_id)); reg |= I40E_VPGEN_VFRTRIG_VFSWR_MASK; wr32(hw, I40E_VPGEN_VFRTRIG(vf->vf_id), reg); i40e_flush(hw); } if (i40e_quiesce_vf_pci(vf)) dev_err(&pf->pdev->dev, "VF %d PCI transactions stuck\n", vf->vf_id); /* poll VPGEN_VFRSTAT reg to make sure * that reset is complete */ for (i = 0; i < 100; i++) { /* vf reset requires driver to first reset the * vf & than poll the status register to make sure * that the requested op was completed * successfully */ udelay(10); reg = rd32(hw, I40E_VPGEN_VFRSTAT(vf->vf_id)); if (reg & I40E_VPGEN_VFRSTAT_VFRD_MASK) { rsd = true; break; } } if (!rsd) dev_err(&pf->pdev->dev, "VF reset check timeout on VF %d\n", vf->vf_id); wr32(hw, I40E_VFGEN_RSTAT1(vf->vf_id), I40E_VFR_COMPLETED); /* clear the reset bit in the VPGEN_VFRTRIG reg */ reg = rd32(hw, I40E_VPGEN_VFRTRIG(vf->vf_id)); reg &= ~I40E_VPGEN_VFRTRIG_VFSWR_MASK; wr32(hw, I40E_VPGEN_VFRTRIG(vf->vf_id), reg); /* On initial reset, we won't have any queues */ if (vf->lan_vsi_index == 0) goto complete_reset; i40e_vsi_control_rings(pf->vsi[vf->lan_vsi_index], false); complete_reset: /* reallocate vf resources to reset the VSI state */ i40e_free_vf_res(vf); mdelay(10); i40e_alloc_vf_res(vf); i40e_enable_vf_mappings(vf); /* tell the VF the reset is done */ wr32(hw, I40E_VFGEN_RSTAT1(vf->vf_id), I40E_VFR_VFACTIVE); i40e_flush(hw); } /** * i40e_vfs_are_assigned * @pf: pointer to the pf structure * * Determine if any VFs are assigned to VMs **/ static bool i40e_vfs_are_assigned(struct i40e_pf *pf) { struct pci_dev *pdev = pf->pdev; struct pci_dev *vfdev; /* loop through all the VFs to see if we own any that are assigned */ vfdev = pci_get_device(PCI_VENDOR_ID_INTEL, I40E_VF_DEVICE_ID , NULL); while (vfdev) { /* if we don't own it we don't care */ if (vfdev->is_virtfn && pci_physfn(vfdev) == pdev) { /* if it is assigned we cannot release it */ if (vfdev->dev_flags & PCI_DEV_FLAGS_ASSIGNED) return true; } vfdev = pci_get_device(PCI_VENDOR_ID_INTEL, I40E_VF_DEVICE_ID, vfdev); } return false; } #ifdef CONFIG_PCI_IOV /** * i40e_enable_pf_switch_lb * @pf: pointer to the pf structure * * enable switch loop back or die - no point in a return value **/ static void i40e_enable_pf_switch_lb(struct i40e_pf *pf) { struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi]; struct i40e_vsi_context ctxt; int aq_ret; ctxt.seid = pf->main_vsi_seid; ctxt.pf_num = pf->hw.pf_id; ctxt.vf_num = 0; aq_ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL); if (aq_ret) { dev_info(&pf->pdev->dev, "%s couldn't get pf vsi config, err %d, aq_err %d\n", __func__, aq_ret, pf->hw.aq.asq_last_status); return; } ctxt.flags = I40E_AQ_VSI_TYPE_PF; ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID); ctxt.info.switch_id |= cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB); aq_ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL); if (aq_ret) { dev_info(&pf->pdev->dev, "%s: update vsi switch failed, aq_err=%d\n", __func__, vsi->back->hw.aq.asq_last_status); } } #endif /** * i40e_disable_pf_switch_lb * @pf: pointer to the pf structure * * disable switch loop back or die - no point in a return value **/ static void i40e_disable_pf_switch_lb(struct i40e_pf *pf) { struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi]; struct i40e_vsi_context ctxt; int aq_ret; ctxt.seid = pf->main_vsi_seid; ctxt.pf_num = pf->hw.pf_id; ctxt.vf_num = 0; aq_ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL); if (aq_ret) { dev_info(&pf->pdev->dev, "%s couldn't get pf vsi config, err %d, aq_err %d\n", __func__, aq_ret, pf->hw.aq.asq_last_status); return; } ctxt.flags = I40E_AQ_VSI_TYPE_PF; ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID); ctxt.info.switch_id &= ~cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB); aq_ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL); if (aq_ret) { dev_info(&pf->pdev->dev, "%s: update vsi switch failed, aq_err=%d\n", __func__, vsi->back->hw.aq.asq_last_status); } } /** * i40e_free_vfs * @pf: pointer to the pf structure * * free vf resources **/ void i40e_free_vfs(struct i40e_pf *pf) { struct i40e_hw *hw = &pf->hw; u32 reg_idx, bit_idx; int i, tmp, vf_id; if (!pf->vf) return; /* Disable interrupt 0 so we don't try to handle the VFLR. */ i40e_irq_dynamic_disable_icr0(pf); mdelay(10); /* let any messages in transit get finished up */ /* free up vf resources */ tmp = pf->num_alloc_vfs; pf->num_alloc_vfs = 0; for (i = 0; i < tmp; i++) { if (test_bit(I40E_VF_STAT_INIT, &pf->vf[i].vf_states)) i40e_free_vf_res(&pf->vf[i]); /* disable qp mappings */ i40e_disable_vf_mappings(&pf->vf[i]); } kfree(pf->vf); pf->vf = NULL; if (!i40e_vfs_are_assigned(pf)) { pci_disable_sriov(pf->pdev); /* Acknowledge VFLR for all VFS. Without this, VFs will fail to * work correctly when SR-IOV gets re-enabled. */ for (vf_id = 0; vf_id < tmp; vf_id++) { reg_idx = (hw->func_caps.vf_base_id + vf_id) / 32; bit_idx = (hw->func_caps.vf_base_id + vf_id) % 32; wr32(hw, I40E_GLGEN_VFLRSTAT(reg_idx), (1 << bit_idx)); } i40e_disable_pf_switch_lb(pf); } else { dev_warn(&pf->pdev->dev, "unable to disable SR-IOV because VFs are assigned.\n"); } /* Re-enable interrupt 0. */ i40e_irq_dynamic_enable_icr0(pf); } #ifdef CONFIG_PCI_IOV /** * i40e_alloc_vfs * @pf: pointer to the pf structure * @num_alloc_vfs: number of vfs to allocate * * allocate vf resources **/ static int i40e_alloc_vfs(struct i40e_pf *pf, u16 num_alloc_vfs) { struct i40e_vf *vfs; int i, ret = 0; /* Disable interrupt 0 so we don't try to handle the VFLR. */ i40e_irq_dynamic_disable_icr0(pf); ret = pci_enable_sriov(pf->pdev, num_alloc_vfs); if (ret) { dev_err(&pf->pdev->dev, "pci_enable_sriov failed with error %d!\n", ret); pf->num_alloc_vfs = 0; goto err_iov; } /* allocate memory */ vfs = kzalloc(num_alloc_vfs * sizeof(struct i40e_vf), GFP_KERNEL); if (!vfs) { ret = -ENOMEM; goto err_alloc; } /* apply default profile */ for (i = 0; i < num_alloc_vfs; i++) { vfs[i].pf = pf; vfs[i].parent_type = I40E_SWITCH_ELEMENT_TYPE_VEB; vfs[i].vf_id = i; /* assign default capabilities */ set_bit(I40E_VIRTCHNL_VF_CAP_L2, &vfs[i].vf_caps); /* vf resources get allocated during reset */ i40e_reset_vf(&vfs[i], false); /* enable vf vplan_qtable mappings */ i40e_enable_vf_mappings(&vfs[i]); } pf->vf = vfs; pf->num_alloc_vfs = num_alloc_vfs; i40e_enable_pf_switch_lb(pf); err_alloc: if (ret) i40e_free_vfs(pf); err_iov: /* Re-enable interrupt 0. */ i40e_irq_dynamic_enable_icr0(pf); return ret; } #endif /** * i40e_pci_sriov_enable * @pdev: pointer to a pci_dev structure * @num_vfs: number of vfs to allocate * * Enable or change the number of VFs **/ static int i40e_pci_sriov_enable(struct pci_dev *pdev, int num_vfs) { #ifdef CONFIG_PCI_IOV struct i40e_pf *pf = pci_get_drvdata(pdev); int pre_existing_vfs = pci_num_vf(pdev); int err = 0; dev_info(&pdev->dev, "Allocating %d VFs.\n", num_vfs); if (pre_existing_vfs && pre_existing_vfs != num_vfs) i40e_free_vfs(pf); else if (pre_existing_vfs && pre_existing_vfs == num_vfs) goto out; if (num_vfs > pf->num_req_vfs) { err = -EPERM; goto err_out; } err = i40e_alloc_vfs(pf, num_vfs); if (err) { dev_warn(&pdev->dev, "Failed to enable SR-IOV: %d\n", err); goto err_out; } out: return num_vfs; err_out: return err; #endif return 0; } /** * i40e_pci_sriov_configure * @pdev: pointer to a pci_dev structure * @num_vfs: number of vfs to allocate * * Enable or change the number of VFs. Called when the user updates the number * of VFs in sysfs. **/ int i40e_pci_sriov_configure(struct pci_dev *pdev, int num_vfs) { struct i40e_pf *pf = pci_get_drvdata(pdev); if (num_vfs) return i40e_pci_sriov_enable(pdev, num_vfs); i40e_free_vfs(pf); return 0; } /***********************virtual channel routines******************/ /** * i40e_vc_send_msg_to_vf * @vf: pointer to the vf info * @v_opcode: virtual channel opcode * @v_retval: virtual channel return value * @msg: pointer to the msg buffer * @msglen: msg length * * send msg to vf **/ static int i40e_vc_send_msg_to_vf(struct i40e_vf *vf, u32 v_opcode, u32 v_retval, u8 *msg, u16 msglen) { struct i40e_pf *pf = vf->pf; struct i40e_hw *hw = &pf->hw; int true_vf_id = vf->vf_id + hw->func_caps.vf_base_id; i40e_status aq_ret; /* single place to detect unsuccessful return values */ if (v_retval) { vf->num_invalid_msgs++; dev_err(&pf->pdev->dev, "Failed opcode %d Error: %d\n", v_opcode, v_retval); if (vf->num_invalid_msgs > I40E_DEFAULT_NUM_INVALID_MSGS_ALLOWED) { dev_err(&pf->pdev->dev, "Number of invalid messages exceeded for VF %d\n", vf->vf_id); dev_err(&pf->pdev->dev, "Use PF Control I/F to enable the VF\n"); set_bit(I40E_VF_STAT_DISABLED, &vf->vf_states); } } else { vf->num_valid_msgs++; } aq_ret = i40e_aq_send_msg_to_vf(hw, true_vf_id, v_opcode, v_retval, msg, msglen, NULL); if (aq_ret) { dev_err(&pf->pdev->dev, "Unable to send the message to VF %d aq_err %d\n", vf->vf_id, pf->hw.aq.asq_last_status); return -EIO; } return 0; } /** * i40e_vc_send_resp_to_vf * @vf: pointer to the vf info * @opcode: operation code * @retval: return value * * send resp msg to vf **/ static int i40e_vc_send_resp_to_vf(struct i40e_vf *vf, enum i40e_virtchnl_ops opcode, i40e_status retval) { return i40e_vc_send_msg_to_vf(vf, opcode, retval, NULL, 0); } /** * i40e_vc_get_version_msg * @vf: pointer to the vf info * * called from the vf to request the API version used by the PF **/ static int i40e_vc_get_version_msg(struct i40e_vf *vf) { struct i40e_virtchnl_version_info info = { I40E_VIRTCHNL_VERSION_MAJOR, I40E_VIRTCHNL_VERSION_MINOR }; return i40e_vc_send_msg_to_vf(vf, I40E_VIRTCHNL_OP_VERSION, I40E_SUCCESS, (u8 *)&info, sizeof(struct i40e_virtchnl_version_info)); } /** * i40e_vc_get_vf_resources_msg * @vf: pointer to the vf info * @msg: pointer to the msg buffer * @msglen: msg length * * called from the vf to request its resources **/ static int i40e_vc_get_vf_resources_msg(struct i40e_vf *vf) { struct i40e_virtchnl_vf_resource *vfres = NULL; struct i40e_pf *pf = vf->pf; i40e_status aq_ret = 0; struct i40e_vsi *vsi; int i = 0, len = 0; int num_vsis = 1; int ret; if (!test_bit(I40E_VF_STAT_INIT, &vf->vf_states)) { aq_ret = I40E_ERR_PARAM; goto err; } len = (sizeof(struct i40e_virtchnl_vf_resource) + sizeof(struct i40e_virtchnl_vsi_resource) * num_vsis); vfres = kzalloc(len, GFP_KERNEL); if (!vfres) { aq_ret = I40E_ERR_NO_MEMORY; len = 0; goto err; } vfres->vf_offload_flags = I40E_VIRTCHNL_VF_OFFLOAD_L2; vsi = pf->vsi[vf->lan_vsi_index]; if (!vsi->info.pvid) vfres->vf_offload_flags |= I40E_VIRTCHNL_VF_OFFLOAD_VLAN; vfres->num_vsis = num_vsis; vfres->num_queue_pairs = vf->num_queue_pairs; vfres->max_vectors = pf->hw.func_caps.num_msix_vectors_vf; if (vf->lan_vsi_index) { vfres->vsi_res[i].vsi_id = vf->lan_vsi_index; vfres->vsi_res[i].vsi_type = I40E_VSI_SRIOV; vfres->vsi_res[i].num_queue_pairs = pf->vsi[vf->lan_vsi_index]->num_queue_pairs; memcpy(vfres->vsi_res[i].default_mac_addr, vf->default_lan_addr.addr, ETH_ALEN); i++; } set_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states); err: /* send the response back to the vf */ ret = i40e_vc_send_msg_to_vf(vf, I40E_VIRTCHNL_OP_GET_VF_RESOURCES, aq_ret, (u8 *)vfres, len); kfree(vfres); return ret; } /** * i40e_vc_reset_vf_msg * @vf: pointer to the vf info * @msg: pointer to the msg buffer * @msglen: msg length * * called from the vf to reset itself, * unlike other virtchnl messages, pf driver * doesn't send the response back to the vf **/ static void i40e_vc_reset_vf_msg(struct i40e_vf *vf) { if (test_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states)) i40e_reset_vf(vf, false); } /** * i40e_vc_config_promiscuous_mode_msg * @vf: pointer to the vf info * @msg: pointer to the msg buffer * @msglen: msg length * * called from the vf to configure the promiscuous mode of * vf vsis **/ static int i40e_vc_config_promiscuous_mode_msg(struct i40e_vf *vf, u8 *msg, u16 msglen) { struct i40e_virtchnl_promisc_info *info = (struct i40e_virtchnl_promisc_info *)msg; struct i40e_pf *pf = vf->pf; struct i40e_hw *hw = &pf->hw; bool allmulti = false; bool promisc = false; i40e_status aq_ret; if (!test_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states) || !test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps) || !i40e_vc_isvalid_vsi_id(vf, info->vsi_id) || (pf->vsi[info->vsi_id]->type != I40E_VSI_FCOE)) { aq_ret = I40E_ERR_PARAM; goto error_param; } if (info->flags & I40E_FLAG_VF_UNICAST_PROMISC) promisc = true; aq_ret = i40e_aq_set_vsi_unicast_promiscuous(hw, info->vsi_id, promisc, NULL); if (aq_ret) goto error_param; if (info->flags & I40E_FLAG_VF_MULTICAST_PROMISC) allmulti = true; aq_ret = i40e_aq_set_vsi_multicast_promiscuous(hw, info->vsi_id, allmulti, NULL); error_param: /* send the response to the vf */ return i40e_vc_send_resp_to_vf(vf, I40E_VIRTCHNL_OP_CONFIG_PROMISCUOUS_MODE, aq_ret); } /** * i40e_vc_config_queues_msg * @vf: pointer to the vf info * @msg: pointer to the msg buffer * @msglen: msg length * * called from the vf to configure the rx/tx * queues **/ static int i40e_vc_config_queues_msg(struct i40e_vf *vf, u8 *msg, u16 msglen) { struct i40e_virtchnl_vsi_queue_config_info *qci = (struct i40e_virtchnl_vsi_queue_config_info *)msg; struct i40e_virtchnl_queue_pair_info *qpi; u16 vsi_id, vsi_queue_id; i40e_status aq_ret = 0; int i; if (!test_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states)) { aq_ret = I40E_ERR_PARAM; goto error_param; } vsi_id = qci->vsi_id; if (!i40e_vc_isvalid_vsi_id(vf, vsi_id)) { aq_ret = I40E_ERR_PARAM; goto error_param; } for (i = 0; i < qci->num_queue_pairs; i++) { qpi = &qci->qpair[i]; vsi_queue_id = qpi->txq.queue_id; if ((qpi->txq.vsi_id != vsi_id) || (qpi->rxq.vsi_id != vsi_id) || (qpi->rxq.queue_id != vsi_queue_id) || !i40e_vc_isvalid_queue_id(vf, vsi_id, vsi_queue_id)) { aq_ret = I40E_ERR_PARAM; goto error_param; } if (i40e_config_vsi_rx_queue(vf, vsi_id, vsi_queue_id, &qpi->rxq) || i40e_config_vsi_tx_queue(vf, vsi_id, vsi_queue_id, &qpi->txq)) { aq_ret = I40E_ERR_PARAM; goto error_param; } } error_param: /* send the response to the vf */ return i40e_vc_send_resp_to_vf(vf, I40E_VIRTCHNL_OP_CONFIG_VSI_QUEUES, aq_ret); } /** * i40e_vc_config_irq_map_msg * @vf: pointer to the vf info * @msg: pointer to the msg buffer * @msglen: msg length * * called from the vf to configure the irq to * queue map **/ static int i40e_vc_config_irq_map_msg(struct i40e_vf *vf, u8 *msg, u16 msglen) { struct i40e_virtchnl_irq_map_info *irqmap_info = (struct i40e_virtchnl_irq_map_info *)msg; struct i40e_virtchnl_vector_map *map; u16 vsi_id, vsi_queue_id, vector_id; i40e_status aq_ret = 0; unsigned long tempmap; int i; if (!test_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states)) { aq_ret = I40E_ERR_PARAM; goto error_param; } for (i = 0; i < irqmap_info->num_vectors; i++) { map = &irqmap_info->vecmap[i]; vector_id = map->vector_id; vsi_id = map->vsi_id; /* validate msg params */ if (!i40e_vc_isvalid_vector_id(vf, vector_id) || !i40e_vc_isvalid_vsi_id(vf, vsi_id)) { aq_ret = I40E_ERR_PARAM; goto error_param; } /* lookout for the invalid queue index */ tempmap = map->rxq_map; for_each_set_bit(vsi_queue_id, &tempmap, I40E_MAX_VSI_QP) { if (!i40e_vc_isvalid_queue_id(vf, vsi_id, vsi_queue_id)) { aq_ret = I40E_ERR_PARAM; goto error_param; } } tempmap = map->txq_map; for_each_set_bit(vsi_queue_id, &tempmap, I40E_MAX_VSI_QP) { if (!i40e_vc_isvalid_queue_id(vf, vsi_id, vsi_queue_id)) { aq_ret = I40E_ERR_PARAM; goto error_param; } } i40e_config_irq_link_list(vf, vsi_id, map); } error_param: /* send the response to the vf */ return i40e_vc_send_resp_to_vf(vf, I40E_VIRTCHNL_OP_CONFIG_IRQ_MAP, aq_ret); } /** * i40e_vc_enable_queues_msg * @vf: pointer to the vf info * @msg: pointer to the msg buffer * @msglen: msg length * * called from the vf to enable all or specific queue(s) **/ static int i40e_vc_enable_queues_msg(struct i40e_vf *vf, u8 *msg, u16 msglen) { struct i40e_virtchnl_queue_select *vqs = (struct i40e_virtchnl_queue_select *)msg; struct i40e_pf *pf = vf->pf; u16 vsi_id = vqs->vsi_id; i40e_status aq_ret = 0; if (!test_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states)) { aq_ret = I40E_ERR_PARAM; goto error_param; } if (!i40e_vc_isvalid_vsi_id(vf, vsi_id)) { aq_ret = I40E_ERR_PARAM; goto error_param; } if ((0 == vqs->rx_queues) && (0 == vqs->tx_queues)) { aq_ret = I40E_ERR_PARAM; goto error_param; } if (i40e_vsi_control_rings(pf->vsi[vsi_id], true)) aq_ret = I40E_ERR_TIMEOUT; error_param: /* send the response to the vf */ return i40e_vc_send_resp_to_vf(vf, I40E_VIRTCHNL_OP_ENABLE_QUEUES, aq_ret); } /** * i40e_vc_disable_queues_msg * @vf: pointer to the vf info * @msg: pointer to the msg buffer * @msglen: msg length * * called from the vf to disable all or specific * queue(s) **/ static int i40e_vc_disable_queues_msg(struct i40e_vf *vf, u8 *msg, u16 msglen) { struct i40e_virtchnl_queue_select *vqs = (struct i40e_virtchnl_queue_select *)msg; struct i40e_pf *pf = vf->pf; u16 vsi_id = vqs->vsi_id; i40e_status aq_ret = 0; if (!test_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states)) { aq_ret = I40E_ERR_PARAM; goto error_param; } if (!i40e_vc_isvalid_vsi_id(vf, vqs->vsi_id)) { aq_ret = I40E_ERR_PARAM; goto error_param; } if ((0 == vqs->rx_queues) && (0 == vqs->tx_queues)) { aq_ret = I40E_ERR_PARAM; goto error_param; } if (i40e_vsi_control_rings(pf->vsi[vsi_id], false)) aq_ret = I40E_ERR_TIMEOUT; error_param: /* send the response to the vf */ return i40e_vc_send_resp_to_vf(vf, I40E_VIRTCHNL_OP_DISABLE_QUEUES, aq_ret); } /** * i40e_vc_get_stats_msg * @vf: pointer to the vf info * @msg: pointer to the msg buffer * @msglen: msg length * * called from the vf to get vsi stats **/ static int i40e_vc_get_stats_msg(struct i40e_vf *vf, u8 *msg, u16 msglen) { struct i40e_virtchnl_queue_select *vqs = (struct i40e_virtchnl_queue_select *)msg; struct i40e_pf *pf = vf->pf; struct i40e_eth_stats stats; i40e_status aq_ret = 0; struct i40e_vsi *vsi; memset(&stats, 0, sizeof(struct i40e_eth_stats)); if (!test_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states)) { aq_ret = I40E_ERR_PARAM; goto error_param; } if (!i40e_vc_isvalid_vsi_id(vf, vqs->vsi_id)) { aq_ret = I40E_ERR_PARAM; goto error_param; } vsi = pf->vsi[vqs->vsi_id]; if (!vsi) { aq_ret = I40E_ERR_PARAM; goto error_param; } i40e_update_eth_stats(vsi); stats = vsi->eth_stats; error_param: /* send the response back to the vf */ return i40e_vc_send_msg_to_vf(vf, I40E_VIRTCHNL_OP_GET_STATS, aq_ret, (u8 *)&stats, sizeof(stats)); } /** * i40e_check_vf_permission * @vf: pointer to the vf info * @macaddr: pointer to the MAC Address being checked * * Check if the VF has permission to add or delete unicast MAC address * filters and return error code -EPERM if not. Then check if the * address filter requested is broadcast or zero and if so return * an invalid MAC address error code. **/ static inline int i40e_check_vf_permission(struct i40e_vf *vf, u8 *macaddr) { struct i40e_pf *pf = vf->pf; int ret = 0; if (is_broadcast_ether_addr(macaddr) || is_zero_ether_addr(macaddr)) { dev_err(&pf->pdev->dev, "invalid VF MAC addr %pM\n", macaddr); ret = I40E_ERR_INVALID_MAC_ADDR; } else if (vf->pf_set_mac && !is_multicast_ether_addr(macaddr) && !ether_addr_equal(macaddr, vf->default_lan_addr.addr)) { /* If the host VMM administrator has set the VF MAC address * administratively via the ndo_set_vf_mac command then deny * permission to the VF to add or delete unicast MAC addresses. * The VF may request to set the MAC address filter already * assigned to it so do not return an error in that case. */ dev_err(&pf->pdev->dev, "VF attempting to override administratively set MAC address\nPlease reload the VF driver to resume normal operation\n"); ret = -EPERM; } return ret; } /** * i40e_vc_add_mac_addr_msg * @vf: pointer to the vf info * @msg: pointer to the msg buffer * @msglen: msg length * * add guest mac address filter **/ static int i40e_vc_add_mac_addr_msg(struct i40e_vf *vf, u8 *msg, u16 msglen) { struct i40e_virtchnl_ether_addr_list *al = (struct i40e_virtchnl_ether_addr_list *)msg; struct i40e_pf *pf = vf->pf; struct i40e_vsi *vsi = NULL; u16 vsi_id = al->vsi_id; i40e_status ret = 0; int i; if (!test_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states) || !test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps) || !i40e_vc_isvalid_vsi_id(vf, vsi_id)) { ret = I40E_ERR_PARAM; goto error_param; } for (i = 0; i < al->num_elements; i++) { ret = i40e_check_vf_permission(vf, al->list[i].addr); if (ret) goto error_param; } vsi = pf->vsi[vsi_id]; /* add new addresses to the list */ for (i = 0; i < al->num_elements; i++) { struct i40e_mac_filter *f; f = i40e_find_mac(vsi, al->list[i].addr, true, false); if (!f) { if (i40e_is_vsi_in_vlan(vsi)) f = i40e_put_mac_in_vlan(vsi, al->list[i].addr, true, false); else f = i40e_add_filter(vsi, al->list[i].addr, -1, true, false); } if (!f) { dev_err(&pf->pdev->dev, "Unable to add VF MAC filter\n"); ret = I40E_ERR_PARAM; goto error_param; } } /* program the updated filter list */ if (i40e_sync_vsi_filters(vsi)) dev_err(&pf->pdev->dev, "Unable to program VF MAC filters\n"); error_param: /* send the response to the vf */ return i40e_vc_send_resp_to_vf(vf, I40E_VIRTCHNL_OP_ADD_ETHER_ADDRESS, ret); } /** * i40e_vc_del_mac_addr_msg * @vf: pointer to the vf info * @msg: pointer to the msg buffer * @msglen: msg length * * remove guest mac address filter **/ static int i40e_vc_del_mac_addr_msg(struct i40e_vf *vf, u8 *msg, u16 msglen) { struct i40e_virtchnl_ether_addr_list *al = (struct i40e_virtchnl_ether_addr_list *)msg; struct i40e_pf *pf = vf->pf; struct i40e_vsi *vsi = NULL; u16 vsi_id = al->vsi_id; i40e_status ret = 0; int i; if (!test_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states) || !test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps) || !i40e_vc_isvalid_vsi_id(vf, vsi_id)) { ret = I40E_ERR_PARAM; goto error_param; } for (i = 0; i < al->num_elements; i++) { ret = i40e_check_vf_permission(vf, al->list[i].addr); if (ret) goto error_param; } vsi = pf->vsi[vsi_id]; /* delete addresses from the list */ for (i = 0; i < al->num_elements; i++) i40e_del_filter(vsi, al->list[i].addr, I40E_VLAN_ANY, true, false); /* program the updated filter list */ if (i40e_sync_vsi_filters(vsi)) dev_err(&pf->pdev->dev, "Unable to program VF MAC filters\n"); error_param: /* send the response to the vf */ return i40e_vc_send_resp_to_vf(vf, I40E_VIRTCHNL_OP_DEL_ETHER_ADDRESS, ret); } /** * i40e_vc_add_vlan_msg * @vf: pointer to the vf info * @msg: pointer to the msg buffer * @msglen: msg length * * program guest vlan id **/ static int i40e_vc_add_vlan_msg(struct i40e_vf *vf, u8 *msg, u16 msglen) { struct i40e_virtchnl_vlan_filter_list *vfl = (struct i40e_virtchnl_vlan_filter_list *)msg; struct i40e_pf *pf = vf->pf; struct i40e_vsi *vsi = NULL; u16 vsi_id = vfl->vsi_id; i40e_status aq_ret = 0; int i; if (!test_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states) || !test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps) || !i40e_vc_isvalid_vsi_id(vf, vsi_id)) { aq_ret = I40E_ERR_PARAM; goto error_param; } for (i = 0; i < vfl->num_elements; i++) { if (vfl->vlan_id[i] > I40E_MAX_VLANID) { aq_ret = I40E_ERR_PARAM; dev_err(&pf->pdev->dev, "invalid VF VLAN id %d\n", vfl->vlan_id[i]); goto error_param; } } vsi = pf->vsi[vsi_id]; if (vsi->info.pvid) { aq_ret = I40E_ERR_PARAM; goto error_param; } i40e_vlan_stripping_enable(vsi); for (i = 0; i < vfl->num_elements; i++) { /* add new VLAN filter */ int ret = i40e_vsi_add_vlan(vsi, vfl->vlan_id[i]); if (ret) dev_err(&pf->pdev->dev, "Unable to add VF vlan filter %d, error %d\n", vfl->vlan_id[i], ret); } error_param: /* send the response to the vf */ return i40e_vc_send_resp_to_vf(vf, I40E_VIRTCHNL_OP_ADD_VLAN, aq_ret); } /** * i40e_vc_remove_vlan_msg * @vf: pointer to the vf info * @msg: pointer to the msg buffer * @msglen: msg length * * remove programmed guest vlan id **/ static int i40e_vc_remove_vlan_msg(struct i40e_vf *vf, u8 *msg, u16 msglen) { struct i40e_virtchnl_vlan_filter_list *vfl = (struct i40e_virtchnl_vlan_filter_list *)msg; struct i40e_pf *pf = vf->pf; struct i40e_vsi *vsi = NULL; u16 vsi_id = vfl->vsi_id; i40e_status aq_ret = 0; int i; if (!test_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states) || !test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps) || !i40e_vc_isvalid_vsi_id(vf, vsi_id)) { aq_ret = I40E_ERR_PARAM; goto error_param; } for (i = 0; i < vfl->num_elements; i++) { if (vfl->vlan_id[i] > I40E_MAX_VLANID) { aq_ret = I40E_ERR_PARAM; goto error_param; } } vsi = pf->vsi[vsi_id]; if (vsi->info.pvid) { aq_ret = I40E_ERR_PARAM; goto error_param; } for (i = 0; i < vfl->num_elements; i++) { int ret = i40e_vsi_kill_vlan(vsi, vfl->vlan_id[i]); if (ret) dev_err(&pf->pdev->dev, "Unable to delete VF vlan filter %d, error %d\n", vfl->vlan_id[i], ret); } error_param: /* send the response to the vf */ return i40e_vc_send_resp_to_vf(vf, I40E_VIRTCHNL_OP_DEL_VLAN, aq_ret); } /** * i40e_vc_validate_vf_msg * @vf: pointer to the vf info * @msg: pointer to the msg buffer * @msglen: msg length * @msghndl: msg handle * * validate msg **/ static int i40e_vc_validate_vf_msg(struct i40e_vf *vf, u32 v_opcode, u32 v_retval, u8 *msg, u16 msglen) { bool err_msg_format = false; int valid_len; /* Check if VF is disabled. */ if (test_bit(I40E_VF_STAT_DISABLED, &vf->vf_states)) return I40E_ERR_PARAM; /* Validate message length. */ switch (v_opcode) { case I40E_VIRTCHNL_OP_VERSION: valid_len = sizeof(struct i40e_virtchnl_version_info); break; case I40E_VIRTCHNL_OP_RESET_VF: case I40E_VIRTCHNL_OP_GET_VF_RESOURCES: valid_len = 0; break; case I40E_VIRTCHNL_OP_CONFIG_TX_QUEUE: valid_len = sizeof(struct i40e_virtchnl_txq_info); break; case I40E_VIRTCHNL_OP_CONFIG_RX_QUEUE: valid_len = sizeof(struct i40e_virtchnl_rxq_info); break; case I40E_VIRTCHNL_OP_CONFIG_VSI_QUEUES: valid_len = sizeof(struct i40e_virtchnl_vsi_queue_config_info); if (msglen >= valid_len) { struct i40e_virtchnl_vsi_queue_config_info *vqc = (struct i40e_virtchnl_vsi_queue_config_info *)msg; valid_len += (vqc->num_queue_pairs * sizeof(struct i40e_virtchnl_queue_pair_info)); if (vqc->num_queue_pairs == 0) err_msg_format = true; } break; case I40E_VIRTCHNL_OP_CONFIG_IRQ_MAP: valid_len = sizeof(struct i40e_virtchnl_irq_map_info); if (msglen >= valid_len) { struct i40e_virtchnl_irq_map_info *vimi = (struct i40e_virtchnl_irq_map_info *)msg; valid_len += (vimi->num_vectors * sizeof(struct i40e_virtchnl_vector_map)); if (vimi->num_vectors == 0) err_msg_format = true; } break; case I40E_VIRTCHNL_OP_ENABLE_QUEUES: case I40E_VIRTCHNL_OP_DISABLE_QUEUES: valid_len = sizeof(struct i40e_virtchnl_queue_select); break; case I40E_VIRTCHNL_OP_ADD_ETHER_ADDRESS: case I40E_VIRTCHNL_OP_DEL_ETHER_ADDRESS: valid_len = sizeof(struct i40e_virtchnl_ether_addr_list); if (msglen >= valid_len) { struct i40e_virtchnl_ether_addr_list *veal = (struct i40e_virtchnl_ether_addr_list *)msg; valid_len += veal->num_elements * sizeof(struct i40e_virtchnl_ether_addr); if (veal->num_elements == 0) err_msg_format = true; } break; case I40E_VIRTCHNL_OP_ADD_VLAN: case I40E_VIRTCHNL_OP_DEL_VLAN: valid_len = sizeof(struct i40e_virtchnl_vlan_filter_list); if (msglen >= valid_len) { struct i40e_virtchnl_vlan_filter_list *vfl = (struct i40e_virtchnl_vlan_filter_list *)msg; valid_len += vfl->num_elements * sizeof(u16); if (vfl->num_elements == 0) err_msg_format = true; } break; case I40E_VIRTCHNL_OP_CONFIG_PROMISCUOUS_MODE: valid_len = sizeof(struct i40e_virtchnl_promisc_info); break; case I40E_VIRTCHNL_OP_GET_STATS: valid_len = sizeof(struct i40e_virtchnl_queue_select); break; /* These are always errors coming from the VF. */ case I40E_VIRTCHNL_OP_EVENT: case I40E_VIRTCHNL_OP_UNKNOWN: default: return -EPERM; break; } /* few more checks */ if ((valid_len != msglen) || (err_msg_format)) { i40e_vc_send_resp_to_vf(vf, v_opcode, I40E_ERR_PARAM); return -EINVAL; } else { return 0; } } /** * i40e_vc_process_vf_msg * @pf: pointer to the pf structure * @vf_id: source vf id * @msg: pointer to the msg buffer * @msglen: msg length * @msghndl: msg handle * * called from the common aeq/arq handler to * process request from vf **/ int i40e_vc_process_vf_msg(struct i40e_pf *pf, u16 vf_id, u32 v_opcode, u32 v_retval, u8 *msg, u16 msglen) { struct i40e_hw *hw = &pf->hw; int local_vf_id = vf_id - hw->func_caps.vf_base_id; struct i40e_vf *vf; int ret; pf->vf_aq_requests++; if (local_vf_id >= pf->num_alloc_vfs) return -EINVAL; vf = &(pf->vf[local_vf_id]); /* perform basic checks on the msg */ ret = i40e_vc_validate_vf_msg(vf, v_opcode, v_retval, msg, msglen); if (ret) { dev_err(&pf->pdev->dev, "Invalid message from vf %d, opcode %d, len %d\n", local_vf_id, v_opcode, msglen); return ret; } wr32(hw, I40E_VFGEN_RSTAT1(local_vf_id), I40E_VFR_VFACTIVE); switch (v_opcode) { case I40E_VIRTCHNL_OP_VERSION: ret = i40e_vc_get_version_msg(vf); break; case I40E_VIRTCHNL_OP_GET_VF_RESOURCES: ret = i40e_vc_get_vf_resources_msg(vf); break; case I40E_VIRTCHNL_OP_RESET_VF: i40e_vc_reset_vf_msg(vf); ret = 0; break; case I40E_VIRTCHNL_OP_CONFIG_PROMISCUOUS_MODE: ret = i40e_vc_config_promiscuous_mode_msg(vf, msg, msglen); break; case I40E_VIRTCHNL_OP_CONFIG_VSI_QUEUES: ret = i40e_vc_config_queues_msg(vf, msg, msglen); break; case I40E_VIRTCHNL_OP_CONFIG_IRQ_MAP: ret = i40e_vc_config_irq_map_msg(vf, msg, msglen); break; case I40E_VIRTCHNL_OP_ENABLE_QUEUES: ret = i40e_vc_enable_queues_msg(vf, msg, msglen); break; case I40E_VIRTCHNL_OP_DISABLE_QUEUES: ret = i40e_vc_disable_queues_msg(vf, msg, msglen); break; case I40E_VIRTCHNL_OP_ADD_ETHER_ADDRESS: ret = i40e_vc_add_mac_addr_msg(vf, msg, msglen); break; case I40E_VIRTCHNL_OP_DEL_ETHER_ADDRESS: ret = i40e_vc_del_mac_addr_msg(vf, msg, msglen); break; case I40E_VIRTCHNL_OP_ADD_VLAN: ret = i40e_vc_add_vlan_msg(vf, msg, msglen); break; case I40E_VIRTCHNL_OP_DEL_VLAN: ret = i40e_vc_remove_vlan_msg(vf, msg, msglen); break; case I40E_VIRTCHNL_OP_GET_STATS: ret = i40e_vc_get_stats_msg(vf, msg, msglen); break; case I40E_VIRTCHNL_OP_UNKNOWN: default: dev_err(&pf->pdev->dev, "Unsupported opcode %d from vf %d\n", v_opcode, local_vf_id); ret = i40e_vc_send_resp_to_vf(vf, v_opcode, I40E_ERR_NOT_IMPLEMENTED); break; } return ret; } /** * i40e_vc_process_vflr_event * @pf: pointer to the pf structure * * called from the vlfr irq handler to * free up vf resources and state variables **/ int i40e_vc_process_vflr_event(struct i40e_pf *pf) { u32 reg, reg_idx, bit_idx, vf_id; struct i40e_hw *hw = &pf->hw; struct i40e_vf *vf; if (!test_bit(__I40E_VFLR_EVENT_PENDING, &pf->state)) return 0; clear_bit(__I40E_VFLR_EVENT_PENDING, &pf->state); for (vf_id = 0; vf_id < pf->num_alloc_vfs; vf_id++) { reg_idx = (hw->func_caps.vf_base_id + vf_id) / 32; bit_idx = (hw->func_caps.vf_base_id + vf_id) % 32; /* read GLGEN_VFLRSTAT register to find out the flr vfs */ vf = &pf->vf[vf_id]; reg = rd32(hw, I40E_GLGEN_VFLRSTAT(reg_idx)); if (reg & (1 << bit_idx)) { /* clear the bit in GLGEN_VFLRSTAT */ wr32(hw, I40E_GLGEN_VFLRSTAT(reg_idx), (1 << bit_idx)); i40e_reset_vf(vf, true); } } /* re-enable vflr interrupt cause */ reg = rd32(hw, I40E_PFINT_ICR0_ENA); reg |= I40E_PFINT_ICR0_ENA_VFLR_MASK; wr32(hw, I40E_PFINT_ICR0_ENA, reg); i40e_flush(hw); return 0; } /** * i40e_vc_vf_broadcast * @pf: pointer to the pf structure * @opcode: operation code * @retval: return value * @msg: pointer to the msg buffer * @msglen: msg length * * send a message to all VFs on a given PF **/ static void i40e_vc_vf_broadcast(struct i40e_pf *pf, enum i40e_virtchnl_ops v_opcode, i40e_status v_retval, u8 *msg, u16 msglen) { struct i40e_hw *hw = &pf->hw; struct i40e_vf *vf = pf->vf; int i; for (i = 0; i < pf->num_alloc_vfs; i++) { /* Ignore return value on purpose - a given VF may fail, but * we need to keep going and send to all of them */ i40e_aq_send_msg_to_vf(hw, vf->vf_id, v_opcode, v_retval, msg, msglen, NULL); vf++; } } /** * i40e_vc_notify_link_state * @pf: pointer to the pf structure * * send a link status message to all VFs on a given PF **/ void i40e_vc_notify_link_state(struct i40e_pf *pf) { struct i40e_virtchnl_pf_event pfe; pfe.event = I40E_VIRTCHNL_EVENT_LINK_CHANGE; pfe.severity = I40E_PF_EVENT_SEVERITY_INFO; pfe.event_data.link_event.link_status = pf->hw.phy.link_info.link_info & I40E_AQ_LINK_UP; pfe.event_data.link_event.link_speed = pf->hw.phy.link_info.link_speed; i40e_vc_vf_broadcast(pf, I40E_VIRTCHNL_OP_EVENT, I40E_SUCCESS, (u8 *)&pfe, sizeof(struct i40e_virtchnl_pf_event)); } /** * i40e_vc_notify_reset * @pf: pointer to the pf structure * * indicate a pending reset to all VFs on a given PF **/ void i40e_vc_notify_reset(struct i40e_pf *pf) { struct i40e_virtchnl_pf_event pfe; pfe.event = I40E_VIRTCHNL_EVENT_RESET_IMPENDING; pfe.severity = I40E_PF_EVENT_SEVERITY_CERTAIN_DOOM; i40e_vc_vf_broadcast(pf, I40E_VIRTCHNL_OP_EVENT, I40E_SUCCESS, (u8 *)&pfe, sizeof(struct i40e_virtchnl_pf_event)); } /** * i40e_vc_notify_vf_reset * @vf: pointer to the vf structure * * indicate a pending reset to the given VF **/ void i40e_vc_notify_vf_reset(struct i40e_vf *vf) { struct i40e_virtchnl_pf_event pfe; pfe.event = I40E_VIRTCHNL_EVENT_RESET_IMPENDING; pfe.severity = I40E_PF_EVENT_SEVERITY_CERTAIN_DOOM; i40e_aq_send_msg_to_vf(&vf->pf->hw, vf->vf_id, I40E_VIRTCHNL_OP_EVENT, I40E_SUCCESS, (u8 *)&pfe, sizeof(struct i40e_virtchnl_pf_event), NULL); } /** * i40e_ndo_set_vf_mac * @netdev: network interface device structure * @vf_id: vf identifier * @mac: mac address * * program vf mac address **/ int i40e_ndo_set_vf_mac(struct net_device *netdev, int vf_id, u8 *mac) { struct i40e_netdev_priv *np = netdev_priv(netdev); struct i40e_vsi *vsi = np->vsi; struct i40e_pf *pf = vsi->back; struct i40e_mac_filter *f; struct i40e_vf *vf; int ret = 0; /* validate the request */ if (vf_id >= pf->num_alloc_vfs) { dev_err(&pf->pdev->dev, "Invalid VF Identifier %d\n", vf_id); ret = -EINVAL; goto error_param; } vf = &(pf->vf[vf_id]); vsi = pf->vsi[vf->lan_vsi_index]; if (!test_bit(I40E_VF_STAT_INIT, &vf->vf_states)) { dev_err(&pf->pdev->dev, "Uninitialized VF %d\n", vf_id); ret = -EINVAL; goto error_param; } if (!is_valid_ether_addr(mac)) { dev_err(&pf->pdev->dev, "Invalid VF ethernet address\n"); ret = -EINVAL; goto error_param; } /* delete the temporary mac address */ i40e_del_filter(vsi, vf->default_lan_addr.addr, 0, true, false); /* add the new mac address */ f = i40e_add_filter(vsi, mac, 0, true, false); if (!f) { dev_err(&pf->pdev->dev, "Unable to add VF ucast filter\n"); ret = -ENOMEM; goto error_param; } dev_info(&pf->pdev->dev, "Setting MAC %pM on VF %d\n", mac, vf_id); /* program mac filter */ if (i40e_sync_vsi_filters(vsi)) { dev_err(&pf->pdev->dev, "Unable to program ucast filters\n"); ret = -EIO; goto error_param; } memcpy(vf->default_lan_addr.addr, mac, ETH_ALEN); vf->pf_set_mac = true; dev_info(&pf->pdev->dev, "Reload the VF driver to make this change effective.\n"); ret = 0; error_param: return ret; } /** * i40e_ndo_set_vf_port_vlan * @netdev: network interface device structure * @vf_id: vf identifier * @vlan_id: mac address * @qos: priority setting * * program vf vlan id and/or qos **/ int i40e_ndo_set_vf_port_vlan(struct net_device *netdev, int vf_id, u16 vlan_id, u8 qos) { struct i40e_netdev_priv *np = netdev_priv(netdev); struct i40e_pf *pf = np->vsi->back; struct i40e_vsi *vsi; struct i40e_vf *vf; int ret = 0; /* validate the request */ if (vf_id >= pf->num_alloc_vfs) { dev_err(&pf->pdev->dev, "Invalid VF Identifier %d\n", vf_id); ret = -EINVAL; goto error_pvid; } if ((vlan_id > I40E_MAX_VLANID) || (qos > 7)) { dev_err(&pf->pdev->dev, "Invalid VF Parameters\n"); ret = -EINVAL; goto error_pvid; } vf = &(pf->vf[vf_id]); vsi = pf->vsi[vf->lan_vsi_index]; if (!test_bit(I40E_VF_STAT_INIT, &vf->vf_states)) { dev_err(&pf->pdev->dev, "Uninitialized VF %d\n", vf_id); ret = -EINVAL; goto error_pvid; } if (vsi->info.pvid) { /* kill old VLAN */ ret = i40e_vsi_kill_vlan(vsi, (le16_to_cpu(vsi->info.pvid) & VLAN_VID_MASK)); if (ret) { dev_info(&vsi->back->pdev->dev, "remove VLAN failed, ret=%d, aq_err=%d\n", ret, pf->hw.aq.asq_last_status); } } if (vlan_id || qos) ret = i40e_vsi_add_pvid(vsi, vlan_id | (qos << I40E_VLAN_PRIORITY_SHIFT)); else i40e_vsi_remove_pvid(vsi); if (vlan_id) { dev_info(&pf->pdev->dev, "Setting VLAN %d, QOS 0x%x on VF %d\n", vlan_id, qos, vf_id); /* add new VLAN filter */ ret = i40e_vsi_add_vlan(vsi, vlan_id); if (ret) { dev_info(&vsi->back->pdev->dev, "add VF VLAN failed, ret=%d aq_err=%d\n", ret, vsi->back->hw.aq.asq_last_status); goto error_pvid; } } if (ret) { dev_err(&pf->pdev->dev, "Unable to update VF vsi context\n"); goto error_pvid; } /* The Port VLAN needs to be saved across resets the same as the * default LAN MAC address. */ vf->port_vlan_id = le16_to_cpu(vsi->info.pvid); ret = 0; error_pvid: return ret; } /** * i40e_ndo_set_vf_bw * @netdev: network interface device structure * @vf_id: vf identifier * @tx_rate: tx rate * * configure vf tx rate **/ int i40e_ndo_set_vf_bw(struct net_device *netdev, int vf_id, int tx_rate) { return -EOPNOTSUPP; } /** * i40e_ndo_get_vf_config * @netdev: network interface device structure * @vf_id: vf identifier * @ivi: vf configuration structure * * return vf configuration **/ int i40e_ndo_get_vf_config(struct net_device *netdev, int vf_id, struct ifla_vf_info *ivi) { struct i40e_netdev_priv *np = netdev_priv(netdev); struct i40e_vsi *vsi = np->vsi; struct i40e_pf *pf = vsi->back; struct i40e_vf *vf; int ret = 0; /* validate the request */ if (vf_id >= pf->num_alloc_vfs) { dev_err(&pf->pdev->dev, "Invalid VF Identifier %d\n", vf_id); ret = -EINVAL; goto error_param; } vf = &(pf->vf[vf_id]); /* first vsi is always the LAN vsi */ vsi = pf->vsi[vf->lan_vsi_index]; if (!test_bit(I40E_VF_STAT_INIT, &vf->vf_states)) { dev_err(&pf->pdev->dev, "Uninitialized VF %d\n", vf_id); ret = -EINVAL; goto error_param; } ivi->vf = vf_id; memcpy(&ivi->mac, vf->default_lan_addr.addr, ETH_ALEN); ivi->tx_rate = 0; ivi->vlan = le16_to_cpu(vsi->info.pvid) & I40E_VLAN_MASK; ivi->qos = (le16_to_cpu(vsi->info.pvid) & I40E_PRIORITY_MASK) >> I40E_VLAN_PRIORITY_SHIFT; ret = 0; error_param: return ret; }