--- /dev/null
+/* Broadcom NetXtreme-C/E network driver.
+ *
+ * Copyright (c) 2014-2015 Broadcom Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation.
+ */
+
+#include <linux/module.h>
+#include <linux/pci.h>
+#include <linux/netdevice.h>
+#include <linux/if_vlan.h>
+#include <linux/interrupt.h>
+#include <linux/etherdevice.h>
+#include "bnxt_hsi.h"
+#include "bnxt.h"
+#include "bnxt_sriov.h"
+#include "bnxt_ethtool.h"
+
+#ifdef CONFIG_BNXT_SRIOV
+static int bnxt_vf_ndo_prep(struct bnxt *bp, int vf_id)
+{
+ if (!test_bit(BNXT_STATE_OPEN, &bp->state)) {
+ netdev_err(bp->dev, "vf ndo called though PF is down\n");
+ return -EINVAL;
+ }
+ if (!bp->pf.active_vfs) {
+ netdev_err(bp->dev, "vf ndo called though sriov is disabled\n");
+ return -EINVAL;
+ }
+ if (vf_id >= bp->pf.max_vfs) {
+ netdev_err(bp->dev, "Invalid VF id %d\n", vf_id);
+ return -EINVAL;
+ }
+ return 0;
+}
+
+int bnxt_set_vf_spoofchk(struct net_device *dev, int vf_id, bool setting)
+{
+ struct hwrm_func_cfg_input req = {0};
+ struct bnxt *bp = netdev_priv(dev);
+ struct bnxt_vf_info *vf;
+ bool old_setting = false;
+ u32 func_flags;
+ int rc;
+
+ rc = bnxt_vf_ndo_prep(bp, vf_id);
+ if (rc)
+ return rc;
+
+ vf = &bp->pf.vf[vf_id];
+ if (vf->flags & BNXT_VF_SPOOFCHK)
+ old_setting = true;
+ if (old_setting == setting)
+ return 0;
+
+ func_flags = vf->func_flags;
+ if (setting)
+ func_flags |= FUNC_CFG_REQ_FLAGS_SRC_MAC_ADDR_CHECK;
+ else
+ func_flags &= ~FUNC_CFG_REQ_FLAGS_SRC_MAC_ADDR_CHECK;
+ /*TODO: if the driver supports VLAN filter on guest VLAN,
+ * the spoof check should also include vlan anti-spoofing
+ */
+ bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_CFG, -1, -1);
+ req.vf_id = cpu_to_le16(vf->fw_fid);
+ req.flags = cpu_to_le32(func_flags);
+ rc = hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+ if (!rc) {
+ vf->func_flags = func_flags;
+ if (setting)
+ vf->flags |= BNXT_VF_SPOOFCHK;
+ else
+ vf->flags &= ~BNXT_VF_SPOOFCHK;
+ }
+ return rc;
+}
+
+int bnxt_get_vf_config(struct net_device *dev, int vf_id,
+ struct ifla_vf_info *ivi)
+{
+ struct bnxt *bp = netdev_priv(dev);
+ struct bnxt_vf_info *vf;
+ int rc;
+
+ rc = bnxt_vf_ndo_prep(bp, vf_id);
+ if (rc)
+ return rc;
+
+ ivi->vf = vf_id;
+ vf = &bp->pf.vf[vf_id];
+
+ memcpy(&ivi->mac, vf->mac_addr, ETH_ALEN);
+ ivi->max_tx_rate = vf->max_tx_rate;
+ ivi->min_tx_rate = vf->min_tx_rate;
+ ivi->vlan = vf->vlan;
+ ivi->qos = vf->flags & BNXT_VF_QOS;
+ ivi->spoofchk = vf->flags & BNXT_VF_SPOOFCHK;
+ if (!(vf->flags & BNXT_VF_LINK_FORCED))
+ ivi->linkstate = IFLA_VF_LINK_STATE_AUTO;
+ else if (vf->flags & BNXT_VF_LINK_UP)
+ ivi->linkstate = IFLA_VF_LINK_STATE_ENABLE;
+ else
+ ivi->linkstate = IFLA_VF_LINK_STATE_DISABLE;
+
+ return 0;
+}
+
+int bnxt_set_vf_mac(struct net_device *dev, int vf_id, u8 *mac)
+{
+ struct hwrm_func_cfg_input req = {0};
+ struct bnxt *bp = netdev_priv(dev);
+ struct bnxt_vf_info *vf;
+ int rc;
+
+ rc = bnxt_vf_ndo_prep(bp, vf_id);
+ if (rc)
+ return rc;
+ /* reject bc or mc mac addr, zero mac addr means allow
+ * VF to use its own mac addr
+ */
+ if (is_multicast_ether_addr(mac)) {
+ netdev_err(dev, "Invalid VF ethernet address\n");
+ return -EINVAL;
+ }
+ vf = &bp->pf.vf[vf_id];
+
+ memcpy(vf->mac_addr, mac, ETH_ALEN);
+ bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_CFG, -1, -1);
+ req.vf_id = cpu_to_le16(vf->fw_fid);
+ req.flags = cpu_to_le32(vf->func_flags);
+ req.enables = cpu_to_le32(FUNC_CFG_REQ_ENABLES_DFLT_MAC_ADDR);
+ memcpy(req.dflt_mac_addr, mac, ETH_ALEN);
+ return hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+}
+
+int bnxt_set_vf_vlan(struct net_device *dev, int vf_id, u16 vlan_id, u8 qos)
+{
+ struct hwrm_func_cfg_input req = {0};
+ struct bnxt *bp = netdev_priv(dev);
+ struct bnxt_vf_info *vf;
+ u16 vlan_tag;
+ int rc;
+
+ rc = bnxt_vf_ndo_prep(bp, vf_id);
+ if (rc)
+ return rc;
+
+ /* TODO: needed to implement proper handling of user priority,
+ * currently fail the command if there is valid priority
+ */
+ if (vlan_id > 4095 || qos)
+ return -EINVAL;
+
+ vf = &bp->pf.vf[vf_id];
+ vlan_tag = vlan_id;
+ if (vlan_tag == vf->vlan)
+ return 0;
+
+ bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_CFG, -1, -1);
+ req.vf_id = cpu_to_le16(vf->fw_fid);
+ req.flags = cpu_to_le32(vf->func_flags);
+ req.dflt_vlan = cpu_to_le16(vlan_tag);
+ req.enables = cpu_to_le32(FUNC_CFG_REQ_ENABLES_DFLT_VLAN);
+ rc = hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+ if (!rc)
+ vf->vlan = vlan_tag;
+ return rc;
+}
+
+int bnxt_set_vf_bw(struct net_device *dev, int vf_id, int min_tx_rate,
+ int max_tx_rate)
+{
+ struct hwrm_func_cfg_input req = {0};
+ struct bnxt *bp = netdev_priv(dev);
+ struct bnxt_vf_info *vf;
+ u32 pf_link_speed;
+ int rc;
+
+ rc = bnxt_vf_ndo_prep(bp, vf_id);
+ if (rc)
+ return rc;
+
+ vf = &bp->pf.vf[vf_id];
+ pf_link_speed = bnxt_fw_to_ethtool_speed(bp->link_info.link_speed);
+ if (max_tx_rate > pf_link_speed) {
+ netdev_info(bp->dev, "max tx rate %d exceed PF link speed for VF %d\n",
+ max_tx_rate, vf_id);
+ return -EINVAL;
+ }
+
+ if (min_tx_rate > pf_link_speed || min_tx_rate > max_tx_rate) {
+ netdev_info(bp->dev, "min tx rate %d is invalid for VF %d\n",
+ min_tx_rate, vf_id);
+ return -EINVAL;
+ }
+ if (min_tx_rate == vf->min_tx_rate && max_tx_rate == vf->max_tx_rate)
+ return 0;
+ bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_CFG, -1, -1);
+ req.vf_id = cpu_to_le16(vf->fw_fid);
+ req.flags = cpu_to_le32(vf->func_flags);
+ req.enables = cpu_to_le32(FUNC_CFG_REQ_ENABLES_MAX_BW);
+ req.max_bw = cpu_to_le32(max_tx_rate);
+ req.enables |= cpu_to_le32(FUNC_CFG_REQ_ENABLES_MIN_BW);
+ req.min_bw = cpu_to_le32(min_tx_rate);
+ rc = hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+ if (!rc) {
+ vf->min_tx_rate = min_tx_rate;
+ vf->max_tx_rate = max_tx_rate;
+ }
+ return rc;
+}
+
+int bnxt_set_vf_link_state(struct net_device *dev, int vf_id, int link)
+{
+ struct bnxt *bp = netdev_priv(dev);
+ struct bnxt_vf_info *vf;
+ int rc;
+
+ rc = bnxt_vf_ndo_prep(bp, vf_id);
+ if (rc)
+ return rc;
+
+ vf = &bp->pf.vf[vf_id];
+
+ vf->flags &= ~(BNXT_VF_LINK_UP | BNXT_VF_LINK_FORCED);
+ switch (link) {
+ case IFLA_VF_LINK_STATE_AUTO:
+ vf->flags |= BNXT_VF_LINK_UP;
+ break;
+ case IFLA_VF_LINK_STATE_DISABLE:
+ vf->flags |= BNXT_VF_LINK_FORCED;
+ break;
+ case IFLA_VF_LINK_STATE_ENABLE:
+ vf->flags |= BNXT_VF_LINK_UP | BNXT_VF_LINK_FORCED;
+ break;
+ default:
+ netdev_err(bp->dev, "Invalid link option\n");
+ rc = -EINVAL;
+ break;
+ }
+ /* CHIMP TODO: send msg to VF to update new link state */
+
+ return rc;
+}
+
+static int bnxt_set_vf_attr(struct bnxt *bp, int num_vfs)
+{
+ int i;
+ struct bnxt_vf_info *vf;
+
+ for (i = 0; i < num_vfs; i++) {
+ vf = &bp->pf.vf[i];
+ memset(vf, 0, sizeof(*vf));
+ vf->flags = BNXT_VF_QOS | BNXT_VF_LINK_UP;
+ }
+ return 0;
+}
+
+static int bnxt_hwrm_func_vf_resource_free(struct bnxt *bp, int num_vfs)
+{
+ int i, rc = 0;
+ struct bnxt_pf_info *pf = &bp->pf;
+ struct hwrm_func_vf_resc_free_input req = {0};
+
+ bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_VF_RESC_FREE, -1, -1);
+
+ mutex_lock(&bp->hwrm_cmd_lock);
+ for (i = pf->first_vf_id; i < pf->first_vf_id + num_vfs; i++) {
+ req.vf_id = cpu_to_le16(i);
+ rc = _hwrm_send_message(bp, &req, sizeof(req),
+ HWRM_CMD_TIMEOUT);
+ if (rc)
+ break;
+ }
+ mutex_unlock(&bp->hwrm_cmd_lock);
+ return rc;
+}
+
+static void bnxt_free_vf_resources(struct bnxt *bp)
+{
+ struct pci_dev *pdev = bp->pdev;
+ int i;
+
+ kfree(bp->pf.vf_event_bmap);
+ bp->pf.vf_event_bmap = NULL;
+
+ for (i = 0; i < 4; i++) {
+ if (bp->pf.hwrm_cmd_req_addr[i]) {
+ dma_free_coherent(&pdev->dev, BNXT_PAGE_SIZE,
+ bp->pf.hwrm_cmd_req_addr[i],
+ bp->pf.hwrm_cmd_req_dma_addr[i]);
+ bp->pf.hwrm_cmd_req_addr[i] = NULL;
+ }
+ }
+
+ kfree(bp->pf.vf);
+ bp->pf.vf = NULL;
+}
+
+static int bnxt_alloc_vf_resources(struct bnxt *bp, int num_vfs)
+{
+ struct pci_dev *pdev = bp->pdev;
+ u32 nr_pages, size, i, j, k = 0;
+
+ bp->pf.vf = kcalloc(num_vfs, sizeof(struct bnxt_vf_info), GFP_KERNEL);
+ if (!bp->pf.vf)
+ return -ENOMEM;
+
+ bnxt_set_vf_attr(bp, num_vfs);
+
+ size = num_vfs * BNXT_HWRM_REQ_MAX_SIZE;
+ nr_pages = size / BNXT_PAGE_SIZE;
+ if (size & (BNXT_PAGE_SIZE - 1))
+ nr_pages++;
+
+ for (i = 0; i < nr_pages; i++) {
+ bp->pf.hwrm_cmd_req_addr[i] =
+ dma_alloc_coherent(&pdev->dev, BNXT_PAGE_SIZE,
+ &bp->pf.hwrm_cmd_req_dma_addr[i],
+ GFP_KERNEL);
+
+ if (!bp->pf.hwrm_cmd_req_addr[i])
+ return -ENOMEM;
+
+ for (j = 0; j < BNXT_HWRM_REQS_PER_PAGE && k < num_vfs; j++) {
+ struct bnxt_vf_info *vf = &bp->pf.vf[k];
+
+ vf->hwrm_cmd_req_addr = bp->pf.hwrm_cmd_req_addr[i] +
+ j * BNXT_HWRM_REQ_MAX_SIZE;
+ vf->hwrm_cmd_req_dma_addr =
+ bp->pf.hwrm_cmd_req_dma_addr[i] + j *
+ BNXT_HWRM_REQ_MAX_SIZE;
+ k++;
+ }
+ }
+
+ /* Max 128 VF's */
+ bp->pf.vf_event_bmap = kzalloc(16, GFP_KERNEL);
+ if (!bp->pf.vf_event_bmap)
+ return -ENOMEM;
+
+ bp->pf.hwrm_cmd_req_pages = nr_pages;
+ return 0;
+}
+
+static int bnxt_hwrm_func_buf_rgtr(struct bnxt *bp)
+{
+ struct hwrm_func_buf_rgtr_input req = {0};
+
+ bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_BUF_RGTR, -1, -1);
+
+ req.req_buf_num_pages = cpu_to_le16(bp->pf.hwrm_cmd_req_pages);
+ req.req_buf_page_size = cpu_to_le16(BNXT_PAGE_SHIFT);
+ req.req_buf_len = cpu_to_le16(BNXT_HWRM_REQ_MAX_SIZE);
+ req.req_buf_page_addr0 = cpu_to_le64(bp->pf.hwrm_cmd_req_dma_addr[0]);
+ req.req_buf_page_addr1 = cpu_to_le64(bp->pf.hwrm_cmd_req_dma_addr[1]);
+ req.req_buf_page_addr2 = cpu_to_le64(bp->pf.hwrm_cmd_req_dma_addr[2]);
+ req.req_buf_page_addr3 = cpu_to_le64(bp->pf.hwrm_cmd_req_dma_addr[3]);
+
+ return hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+}
+
+/* only call by PF to reserve resources for VF */
+static int bnxt_hwrm_func_cfg(struct bnxt *bp, int *num_vfs)
+{
+ u32 rc = 0, mtu, i;
+ u16 vf_tx_rings, vf_rx_rings, vf_cp_rings, vf_stat_ctx, vf_vnics;
+ struct hwrm_func_cfg_input req = {0};
+ struct bnxt_pf_info *pf = &bp->pf;
+
+ bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_CFG, -1, -1);
+
+ /* Remaining rings are distributed equally amongs VF's for now */
+ /* TODO: the following workaroud is needed to restrict total number
+ * of vf_cp_rings not exceed number of HW ring groups. This WA should
+ * be removed once new HWRM provides HW ring groups capability in
+ * hwrm_func_qcap.
+ */
+ vf_cp_rings = min_t(u16, bp->pf.max_cp_rings, bp->pf.max_stat_ctxs);
+ vf_cp_rings = (vf_cp_rings - bp->cp_nr_rings) / *num_vfs;
+ /* TODO: restore this logic below once the WA above is removed */
+ /* vf_cp_rings = (bp->pf.max_cp_rings - bp->cp_nr_rings) / *num_vfs; */
+ vf_stat_ctx = (bp->pf.max_stat_ctxs - bp->num_stat_ctxs) / *num_vfs;
+ if (bp->flags & BNXT_FLAG_AGG_RINGS)
+ vf_rx_rings = (bp->pf.max_rx_rings - bp->rx_nr_rings * 2) /
+ *num_vfs;
+ else
+ vf_rx_rings = (bp->pf.max_rx_rings - bp->rx_nr_rings) /
+ *num_vfs;
+ vf_tx_rings = (bp->pf.max_tx_rings - bp->tx_nr_rings) / *num_vfs;
+
+ req.enables = cpu_to_le32(FUNC_CFG_REQ_ENABLES_MTU |
+ FUNC_CFG_REQ_ENABLES_MRU |
+ FUNC_CFG_REQ_ENABLES_NUM_RSSCOS_CTXS |
+ FUNC_CFG_REQ_ENABLES_NUM_STAT_CTXS |
+ FUNC_CFG_REQ_ENABLES_NUM_CMPL_RINGS |
+ FUNC_CFG_REQ_ENABLES_NUM_TX_RINGS |
+ FUNC_CFG_REQ_ENABLES_NUM_RX_RINGS |
+ FUNC_CFG_REQ_ENABLES_NUM_L2_CTXS |
+ FUNC_CFG_REQ_ENABLES_NUM_VNICS);
+
+ mtu = bp->dev->mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN;
+ req.mru = cpu_to_le16(mtu);
+ req.mtu = cpu_to_le16(mtu);
+
+ req.num_rsscos_ctxs = cpu_to_le16(1);
+ req.num_cmpl_rings = cpu_to_le16(vf_cp_rings);
+ req.num_tx_rings = cpu_to_le16(vf_tx_rings);
+ req.num_rx_rings = cpu_to_le16(vf_rx_rings);
+ req.num_l2_ctxs = cpu_to_le16(4);
+ vf_vnics = 1;
+
+ req.num_vnics = cpu_to_le16(vf_vnics);
+ /* FIXME spec currently uses 1 bit for stats ctx */
+ req.num_stat_ctxs = cpu_to_le16(vf_stat_ctx);
+
+ mutex_lock(&bp->hwrm_cmd_lock);
+ for (i = 0; i < *num_vfs; i++) {
+ req.vf_id = cpu_to_le16(pf->first_vf_id + i);
+ rc = _hwrm_send_message(bp, &req, sizeof(req),
+ HWRM_CMD_TIMEOUT);
+ if (rc)
+ break;
+ bp->pf.active_vfs = i + 1;
+ bp->pf.vf[i].fw_fid = le16_to_cpu(req.vf_id);
+ }
+ mutex_unlock(&bp->hwrm_cmd_lock);
+ if (!rc) {
+ bp->pf.max_pf_tx_rings = bp->tx_nr_rings;
+ if (bp->flags & BNXT_FLAG_AGG_RINGS)
+ bp->pf.max_pf_rx_rings = bp->rx_nr_rings * 2;
+ else
+ bp->pf.max_pf_rx_rings = bp->rx_nr_rings;
+ }
+ return rc;
+}
+
+static int bnxt_sriov_enable(struct bnxt *bp, int *num_vfs)
+{
+ int rc = 0, vfs_supported;
+ int min_rx_rings, min_tx_rings, min_rss_ctxs;
+ int tx_ok = 0, rx_ok = 0, rss_ok = 0;
+
+ /* Check if we can enable requested num of vf's. At a mininum
+ * we require 1 RX 1 TX rings for each VF. In this minimum conf
+ * features like TPA will not be available.
+ */
+ vfs_supported = *num_vfs;
+
+ while (vfs_supported) {
+ min_rx_rings = vfs_supported;
+ min_tx_rings = vfs_supported;
+ min_rss_ctxs = vfs_supported;
+
+ if (bp->flags & BNXT_FLAG_AGG_RINGS) {
+ if (bp->pf.max_rx_rings - bp->rx_nr_rings * 2 >=
+ min_rx_rings)
+ rx_ok = 1;
+ } else {
+ if (bp->pf.max_rx_rings - bp->rx_nr_rings >=
+ min_rx_rings)
+ rx_ok = 1;
+ }
+
+ if (bp->pf.max_tx_rings - bp->tx_nr_rings >= min_tx_rings)
+ tx_ok = 1;
+
+ if (bp->pf.max_rsscos_ctxs - bp->rsscos_nr_ctxs >= min_rss_ctxs)
+ rss_ok = 1;
+
+ if (tx_ok && rx_ok && rss_ok)
+ break;
+
+ vfs_supported--;
+ }
+
+ if (!vfs_supported) {
+ netdev_err(bp->dev, "Cannot enable VF's as all resources are used by PF\n");
+ return -EINVAL;
+ }
+
+ if (vfs_supported != *num_vfs) {
+ netdev_info(bp->dev, "Requested VFs %d, can enable %d\n",
+ *num_vfs, vfs_supported);
+ *num_vfs = vfs_supported;
+ }
+
+ rc = bnxt_alloc_vf_resources(bp, *num_vfs);
+ if (rc)
+ goto err_out1;
+
+ /* Reserve resources for VFs */
+ rc = bnxt_hwrm_func_cfg(bp, num_vfs);
+ if (rc)
+ goto err_out2;
+
+ /* Register buffers for VFs */
+ rc = bnxt_hwrm_func_buf_rgtr(bp);
+ if (rc)
+ goto err_out2;
+
+ rc = pci_enable_sriov(bp->pdev, *num_vfs);
+ if (rc)
+ goto err_out2;
+
+ return 0;
+
+err_out2:
+ /* Free the resources reserved for various VF's */
+ bnxt_hwrm_func_vf_resource_free(bp, *num_vfs);
+
+err_out1:
+ bnxt_free_vf_resources(bp);
+
+ return rc;
+}
+
+void bnxt_sriov_disable(struct bnxt *bp)
+{
+ u16 num_vfs = pci_num_vf(bp->pdev);
+
+ if (!num_vfs)
+ return;
+
+ if (pci_vfs_assigned(bp->pdev)) {
+ netdev_warn(bp->dev, "Unable to free %d VFs because some are assigned to VMs.\n",
+ num_vfs);
+ } else {
+ pci_disable_sriov(bp->pdev);
+ /* Free the HW resources reserved for various VF's */
+ bnxt_hwrm_func_vf_resource_free(bp, num_vfs);
+ }
+
+ bnxt_free_vf_resources(bp);
+
+ bp->pf.active_vfs = 0;
+ bp->pf.max_pf_rx_rings = bp->pf.max_rx_rings;
+ bp->pf.max_pf_tx_rings = bp->pf.max_tx_rings;
+}
+
+int bnxt_sriov_configure(struct pci_dev *pdev, int num_vfs)
+{
+ struct net_device *dev = pci_get_drvdata(pdev);
+ struct bnxt *bp = netdev_priv(dev);
+
+ if (!(bp->flags & BNXT_FLAG_USING_MSIX)) {
+ netdev_warn(dev, "Not allow SRIOV if the irq mode is not MSIX\n");
+ return 0;
+ }
+
+ rtnl_lock();
+ if (!netif_running(dev)) {
+ netdev_warn(dev, "Reject SRIOV config request since if is down!\n");
+ rtnl_unlock();
+ return 0;
+ }
+ bp->sriov_cfg = true;
+ rtnl_unlock();
+
+ if (pci_vfs_assigned(bp->pdev)) {
+ netdev_warn(dev, "Unable to configure SRIOV since some VFs are assigned to VMs.\n");
+ num_vfs = 0;
+ goto sriov_cfg_exit;
+ }
+
+ /* Check if enabled VFs is same as requested */
+ if (num_vfs && num_vfs == bp->pf.active_vfs)
+ goto sriov_cfg_exit;
+
+ /* if there are previous existing VFs, clean them up */
+ bnxt_sriov_disable(bp);
+ if (!num_vfs)
+ goto sriov_cfg_exit;
+
+ bnxt_sriov_enable(bp, &num_vfs);
+
+sriov_cfg_exit:
+ bp->sriov_cfg = false;
+ wake_up(&bp->sriov_cfg_wait);
+
+ return num_vfs;
+}
+
+static int bnxt_hwrm_fwd_resp(struct bnxt *bp, struct bnxt_vf_info *vf,
+ void *encap_resp, __le64 encap_resp_addr,
+ __le16 encap_resp_cpr, u32 msg_size)
+{
+ int rc = 0;
+ struct hwrm_fwd_resp_input req = {0};
+ struct hwrm_fwd_resp_output *resp = bp->hwrm_cmd_resp_addr;
+
+ bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FWD_RESP, -1, -1);
+
+ /* Set the new target id */
+ req.target_id = cpu_to_le16(vf->fw_fid);
+ req.encap_resp_len = cpu_to_le16(msg_size);
+ req.encap_resp_addr = encap_resp_addr;
+ req.encap_resp_cmpl_ring = encap_resp_cpr;
+ memcpy(req.encap_resp, encap_resp, msg_size);
+
+ mutex_lock(&bp->hwrm_cmd_lock);
+ rc = _hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+
+ if (rc) {
+ netdev_err(bp->dev, "hwrm_fwd_resp failed. rc:%d\n", rc);
+ goto fwd_resp_exit;
+ }
+
+ if (resp->error_code) {
+ netdev_err(bp->dev, "hwrm_fwd_resp error %d\n",
+ resp->error_code);
+ rc = -1;
+ }
+
+fwd_resp_exit:
+ mutex_unlock(&bp->hwrm_cmd_lock);
+ return rc;
+}
+
+static int bnxt_hwrm_fwd_err_resp(struct bnxt *bp, struct bnxt_vf_info *vf,
+ u32 msg_size)
+{
+ int rc = 0;
+ struct hwrm_reject_fwd_resp_input req = {0};
+ struct hwrm_reject_fwd_resp_output *resp = bp->hwrm_cmd_resp_addr;
+
+ bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_REJECT_FWD_RESP, -1, -1);
+ /* Set the new target id */
+ req.target_id = cpu_to_le16(vf->fw_fid);
+ memcpy(req.encap_request, vf->hwrm_cmd_req_addr, msg_size);
+
+ mutex_lock(&bp->hwrm_cmd_lock);
+ rc = _hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+
+ if (rc) {
+ netdev_err(bp->dev, "hwrm_fwd_err_resp failed. rc:%d\n", rc);
+ goto fwd_err_resp_exit;
+ }
+
+ if (resp->error_code) {
+ netdev_err(bp->dev, "hwrm_fwd_err_resp error %d\n",
+ resp->error_code);
+ rc = -1;
+ }
+
+fwd_err_resp_exit:
+ mutex_unlock(&bp->hwrm_cmd_lock);
+ return rc;
+}
+
+static int bnxt_hwrm_exec_fwd_resp(struct bnxt *bp, struct bnxt_vf_info *vf,
+ u32 msg_size)
+{
+ int rc = 0;
+ struct hwrm_exec_fwd_resp_input req = {0};
+ struct hwrm_exec_fwd_resp_output *resp = bp->hwrm_cmd_resp_addr;
+
+ bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_EXEC_FWD_RESP, -1, -1);
+ /* Set the new target id */
+ req.target_id = cpu_to_le16(vf->fw_fid);
+ memcpy(req.encap_request, vf->hwrm_cmd_req_addr, msg_size);
+
+ mutex_lock(&bp->hwrm_cmd_lock);
+ rc = _hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+
+ if (rc) {
+ netdev_err(bp->dev, "hwrm_exec_fw_resp failed. rc:%d\n", rc);
+ goto exec_fwd_resp_exit;
+ }
+
+ if (resp->error_code) {
+ netdev_err(bp->dev, "hwrm_exec_fw_resp error %d\n",
+ resp->error_code);
+ rc = -1;
+ }
+
+exec_fwd_resp_exit:
+ mutex_unlock(&bp->hwrm_cmd_lock);
+ return rc;
+}
+
+static int bnxt_vf_validate_set_mac(struct bnxt *bp, struct bnxt_vf_info *vf)
+{
+ u32 msg_size = sizeof(struct hwrm_cfa_l2_filter_alloc_input);
+ struct hwrm_cfa_l2_filter_alloc_input *req =
+ (struct hwrm_cfa_l2_filter_alloc_input *)vf->hwrm_cmd_req_addr;
+
+ if (!is_valid_ether_addr(vf->mac_addr) ||
+ ether_addr_equal((const u8 *)req->l2_addr, vf->mac_addr))
+ return bnxt_hwrm_exec_fwd_resp(bp, vf, msg_size);
+ else
+ return bnxt_hwrm_fwd_err_resp(bp, vf, msg_size);
+}
+
+static int bnxt_vf_set_link(struct bnxt *bp, struct bnxt_vf_info *vf)
+{
+ int rc = 0;
+
+ if (!(vf->flags & BNXT_VF_LINK_FORCED)) {
+ /* real link */
+ rc = bnxt_hwrm_exec_fwd_resp(
+ bp, vf, sizeof(struct hwrm_port_phy_qcfg_input));
+ } else {
+ struct hwrm_port_phy_qcfg_output phy_qcfg_resp;
+ struct hwrm_port_phy_qcfg_input *phy_qcfg_req;
+
+ phy_qcfg_req =
+ (struct hwrm_port_phy_qcfg_input *)vf->hwrm_cmd_req_addr;
+ mutex_lock(&bp->hwrm_cmd_lock);
+ memcpy(&phy_qcfg_resp, &bp->link_info.phy_qcfg_resp,
+ sizeof(phy_qcfg_resp));
+ mutex_unlock(&bp->hwrm_cmd_lock);
+ phy_qcfg_resp.seq_id = phy_qcfg_req->seq_id;
+
+ if (vf->flags & BNXT_VF_LINK_UP) {
+ /* if physical link is down, force link up on VF */
+ if (phy_qcfg_resp.link ==
+ PORT_PHY_QCFG_RESP_LINK_NO_LINK) {
+ phy_qcfg_resp.link =
+ PORT_PHY_QCFG_RESP_LINK_LINK;
+ if (phy_qcfg_resp.auto_link_speed)
+ phy_qcfg_resp.link_speed =
+ phy_qcfg_resp.auto_link_speed;
+ else
+ phy_qcfg_resp.link_speed =
+ phy_qcfg_resp.force_link_speed;
+ phy_qcfg_resp.duplex =
+ PORT_PHY_QCFG_RESP_DUPLEX_FULL;
+ phy_qcfg_resp.pause =
+ (PORT_PHY_QCFG_RESP_PAUSE_TX |
+ PORT_PHY_QCFG_RESP_PAUSE_RX);
+ }
+ } else {
+ /* force link down */
+ phy_qcfg_resp.link = PORT_PHY_QCFG_RESP_LINK_NO_LINK;
+ phy_qcfg_resp.link_speed = 0;
+ phy_qcfg_resp.duplex = PORT_PHY_QCFG_RESP_DUPLEX_HALF;
+ phy_qcfg_resp.pause = 0;
+ }
+ rc = bnxt_hwrm_fwd_resp(bp, vf, &phy_qcfg_resp,
+ phy_qcfg_req->resp_addr,
+ phy_qcfg_req->cmpl_ring,
+ sizeof(phy_qcfg_resp));
+ }
+ return rc;
+}
+
+static int bnxt_vf_req_validate_snd(struct bnxt *bp, struct bnxt_vf_info *vf)
+{
+ int rc = 0;
+ struct hwrm_cmd_req_hdr *encap_req = vf->hwrm_cmd_req_addr;
+ u32 req_type = le32_to_cpu(encap_req->cmpl_ring_req_type) & 0xffff;
+
+ switch (req_type) {
+ case HWRM_CFA_L2_FILTER_ALLOC:
+ rc = bnxt_vf_validate_set_mac(bp, vf);
+ break;
+ case HWRM_FUNC_CFG:
+ /* TODO Validate if VF is allowed to change mac address,
+ * mtu, num of rings etc
+ */
+ rc = bnxt_hwrm_exec_fwd_resp(
+ bp, vf, sizeof(struct hwrm_func_cfg_input));
+ break;
+ case HWRM_PORT_PHY_QCFG:
+ rc = bnxt_vf_set_link(bp, vf);
+ break;
+ default:
+ break;
+ }
+ return rc;
+}
+
+void bnxt_hwrm_exec_fwd_req(struct bnxt *bp)
+{
+ u32 i = 0, active_vfs = bp->pf.active_vfs, vf_id;
+
+ /* Scan through VF's and process commands */
+ while (1) {
+ vf_id = find_next_bit(bp->pf.vf_event_bmap, active_vfs, i);
+ if (vf_id >= active_vfs)
+ break;
+
+ clear_bit(vf_id, bp->pf.vf_event_bmap);
+ bnxt_vf_req_validate_snd(bp, &bp->pf.vf[vf_id]);
+ i = vf_id + 1;
+ }
+}
+
+void bnxt_update_vf_mac(struct bnxt *bp)
+{
+ struct hwrm_func_qcaps_input req = {0};
+ struct hwrm_func_qcaps_output *resp = bp->hwrm_cmd_resp_addr;
+
+ bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_QCAPS, -1, -1);
+ req.fid = cpu_to_le16(0xffff);
+
+ mutex_lock(&bp->hwrm_cmd_lock);
+ if (_hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT))
+ goto update_vf_mac_exit;
+
+ if (!is_valid_ether_addr(resp->perm_mac_address))
+ goto update_vf_mac_exit;
+
+ if (!ether_addr_equal(resp->perm_mac_address, bp->vf.mac_addr))
+ memcpy(bp->vf.mac_addr, resp->perm_mac_address, ETH_ALEN);
+ /* overwrite netdev dev_adr with admin VF MAC */
+ memcpy(bp->dev->dev_addr, bp->vf.mac_addr, ETH_ALEN);
+update_vf_mac_exit:
+ mutex_unlock(&bp->hwrm_cmd_lock);
+}
+
+#else
+
+void bnxt_sriov_disable(struct bnxt *bp)
+{
+}
+
+void bnxt_hwrm_exec_fwd_req(struct bnxt *bp)
+{
+ netdev_err(bp->dev, "Invalid VF message received when SRIOV is not enable\n");
+}
+
+void bnxt_update_vf_mac(struct bnxt *bp)
+{
+}
+#endif
Code Review / kvmfornfv.git / blobdiff