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OpenCloudOS-Kernel/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c

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/*******************************************************************************
*
* 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 <e1000-devel@lists.sourceforge.net>
* 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_hw *hw = &pf->hw;
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) {
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);
f = i40e_add_filter(vsi, vf->default_lan_addr.addr,
0, true, false);
}
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;
}
/* accept bcast pkts. by default */
ret = i40e_aq_set_vsi_broadcast(hw, vsi->seid, true, NULL);
if (ret) {
dev_err(&pf->pdev->dev,
"set vsi bcast failed for vf %d, vsi %d, aq_err %d\n",
vf->vf_id, vsi->idx, pf->hw.aq.asq_last_status);
ret = -EINVAL;
}
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;
reg = rd32(hw, I40E_PF_VT_PFALLOC);
vf_abs_id = vf->vf_id + (reg & I40E_PF_VT_PFALLOC_FIRSTVF_MASK);
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;
}
/**
* 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;
int i;
if (!pf->vf)
return;
/* Disable interrupt 0 so we don't try to handle the VFLR. */
wr32(hw, I40E_PFINT_DYN_CTL0, 0);
i40e_flush(hw);
/* free up vf resources */
for (i = 0; i < pf->num_alloc_vfs; 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;
pf->num_alloc_vfs = 0;
if (!i40e_vfs_are_assigned(pf))
pci_disable_sriov(pf->pdev);
else
dev_warn(&pf->pdev->dev,
"unable to disable SR-IOV because VFs are assigned.\n");
/* Re-enable interrupt 0. */
wr32(hw, I40E_PFINT_DYN_CTL0,
I40E_PFINT_DYN_CTL0_INTENA_MASK |
I40E_PFINT_DYN_CTL0_CLEARPBA_MASK |
(I40E_ITR_NONE << I40E_PFINT_DYN_CTL0_ITR_INDX_SHIFT));
i40e_flush(hw);
}
#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;
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;
err_alloc:
if (ret)
i40e_free_vfs(pf);
err_iov:
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;
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, vf->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);
memcpy(&stats, &vsi->eth_stats, sizeof(struct i40e_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_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 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 < al->num_elements; i++) {
if (is_broadcast_ether_addr(al->list[i].addr) ||
is_zero_ether_addr(al->list[i].addr)) {
dev_err(&pf->pdev->dev, "invalid VF MAC addr %pMAC\n",
al->list[i].addr);
aq_ret = I40E_ERR_INVALID_MAC_ADDR;
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");
aq_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,
aq_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 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;
}
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,
aq_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_vf *vf = &(pf->vf[vf_id]);
struct i40e_hw *hw = &pf->hw;
int ret;
pf->vf_aq_requests++;
/* 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\n", vf_id);
return ret;
}
wr32(hw, I40E_VFGEN_RSTAT1(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, 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);
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_vlan_stripping_disable(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;
}
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_mac_filter *f, *ftmp;
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;
/* first entry of the list is the default ethernet address */
list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
memcpy(&ivi->mac, f->macaddr, I40E_ETH_LENGTH_OF_ADDRESS);
break;
}
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;
}
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