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a8643e1604
linux/drivers/net/ethernet/broadcom/bnxt/bnxt_sriov.c
Michael Chan a8643e1604 bnxt_en: Fix dmesg log firmware error messages. 
Use appropriate firmware request header structure to prepare the
firmware messages.  This avoids the unnecessary conversion of the
fields to 32-bit fields.  Add appropriate endian conversion when
printing out the message fields in dmesg so that they appear correct
in the log.

Reported-by: Rob Swindell <swindell@broadcom.com>
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-03-01 15:37:01 -05:00

887 lines
24 KiB
C
Raw Blame History

/* 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.fid = 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.fid = 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.fid = 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.fid = 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;
u16 vf_ring_grps;
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, pf->max_cp_rings, 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 = (pf->max_cp_rings - bp->cp_nr_rings) / num_vfs; */
vf_stat_ctx = (pf->max_stat_ctxs - bp->num_stat_ctxs) / num_vfs;
if (bp->flags & BNXT_FLAG_AGG_RINGS)
vf_rx_rings = (pf->max_rx_rings - bp->rx_nr_rings * 2) /
num_vfs;
else
vf_rx_rings = (pf->max_rx_rings - bp->rx_nr_rings) / num_vfs;
vf_ring_grps = (bp->pf.max_hw_ring_grps - bp->rx_nr_rings) / num_vfs;
vf_tx_rings = (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 |
FUNC_CFG_REQ_ENABLES_NUM_HW_RING_GRPS);
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_hw_ring_grps = cpu_to_le16(vf_ring_grps);
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.fid = cpu_to_le16(pf->first_vf_id + i);
rc = _hwrm_send_message(bp, &req, sizeof(req),
HWRM_CMD_TIMEOUT);
if (rc)
break;
pf->active_vfs = i + 1;
pf->vf[i].fw_fid = le16_to_cpu(req.fid);
}
mutex_unlock(&bp->hwrm_cmd_lock);
if (!rc) {
pf->max_tx_rings -= vf_tx_rings * num_vfs;
pf->max_rx_rings -= vf_rx_rings * num_vfs;
pf->max_hw_ring_grps -= vf_ring_grps * num_vfs;
pf->max_cp_rings -= vf_cp_rings * num_vfs;
pf->max_rsscos_ctxs -= num_vfs;
pf->max_stat_ctxs -= vf_stat_ctx * num_vfs;
pf->max_vnics -= vf_vnics * num_vfs;
}
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;
}
static int bnxt_hwrm_fwd_async_event_cmpl(struct bnxt *bp,
struct bnxt_vf_info *vf,
u16 event_id)
{
int rc = 0;
struct hwrm_fwd_async_event_cmpl_input req = {0};
struct hwrm_fwd_async_event_cmpl_output *resp = bp->hwrm_cmd_resp_addr;
struct hwrm_async_event_cmpl *async_cmpl;
bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FWD_ASYNC_EVENT_CMPL, -1, -1);
if (vf)
req.encap_async_event_target_id = cpu_to_le16(vf->fw_fid);
else
/* broadcast this async event to all VFs */
req.encap_async_event_target_id = cpu_to_le16(0xffff);
async_cmpl = (struct hwrm_async_event_cmpl *)req.encap_async_event_cmpl;
async_cmpl->type =
cpu_to_le16(HWRM_ASYNC_EVENT_CMPL_TYPE_HWRM_ASYNC_EVENT);
async_cmpl->event_id = cpu_to_le16(event_id);
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_async_event_cmpl failed. rc:%d\n",
rc);
goto fwd_async_event_cmpl_exit;
}
if (resp->error_code) {
netdev_err(bp->dev, "hwrm_fwd_async_event_cmpl error %d\n",
resp->error_code);
rc = -1;
}
fwd_async_event_cmpl_exit:
mutex_unlock(&bp->hwrm_cmd_lock);
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)) {
bnxt_hwrm_fwd_async_event_cmpl(
bp, NULL,
HWRM_ASYNC_EVENT_CMPL_EVENT_ID_PF_DRVR_UNLOAD);
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;
/* Reclaim all resources for the PF. */
bnxt_hwrm_func_qcaps(bp);
}
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_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);
req.encap_resp_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);
req.encap_resp_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 input *encap_req = vf->hwrm_cmd_req_addr;
u32 req_type = le16_to_cpu(encap_req->req_type);
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;
/* Store MAC address from the firmware. There are 2 cases:
* 1. MAC address is valid. It is assigned from the PF and we
* need to override the current VF MAC address with it.
* 2. MAC address is zero. The VF will use a random MAC address by
* default but the stored zero MAC will allow the VF user to change
* the random MAC address using ndo_set_mac_address() if he wants.
*/
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_addr with admin VF MAC */
if (is_valid_ether_addr(bp->vf.mac_addr))
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
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