mirrors
/
linux-stable
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
1
0
Fork 0
Code Issues Releases Wiki Activity

ice: Introduce ice_base.c 

Remove a few uses of kernel configuration flags from ice_lib.c by
introducing a new source file ice_base.c. Also move corresponding
function prototypes from ice_lib.h to ice_base.h and include ice_base.h
where required.

Signed-off-by: Anirudh Venkataramanan <anirudh.venkataramanan@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This commit is contained in:
Anirudh Venkataramanan 2019-10-24 01:11:17 -07:00 committed by Jeff Kirsher
parent 1574cf83c7
commit eff380aaff
10 changed files with 811 additions and 827 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
drivers/net/ethernet/intel/ice/Makefile
View File

@ -13,6 +13,7 @@ ice-y := ice_main.o \
ice_nvm.o \
ice_switch.o \
ice_sched.o \
ice_base.o \
ice_lib.o \
ice_txrx.o \
ice_flex_pipe.o \

8
drivers/net/ethernet/intel/ice/ice.h
View File

@ -127,6 +127,14 @@ extern const char ice_drv_ver[];
ICE_PROMISC_VLAN_TX | \
ICE_PROMISC_VLAN_RX)
struct ice_txq_meta {
u32 q_teid; /* Tx-scheduler element identifier */
u16 q_id; /* Entry in VSI's txq_map bitmap */
u16 q_handle; /* Relative index of Tx queue within TC */
u16 vsi_idx; /* VSI index that Tx queue belongs to */
u8 tc; /* TC number that Tx queue belongs to */
};
struct ice_tc_info {
u16 qoffset;
u16 qcount_tx;

767
drivers/net/ethernet/intel/ice/ice_base.c Normal file
View File

@ -0,0 +1,767 @@
// SPDX-License-Identifier: GPL-2.0
/* Copyright (c) 2019, Intel Corporation. */
#include "ice_base.h"
#include "ice_dcb_lib.h"
/**
* __ice_vsi_get_qs_contig - Assign a contiguous chunk of queues to VSI
* @qs_cfg: gathered variables needed for PF->VSI queues assignment
*
* Return 0 on success and -ENOMEM in case of no left space in PF queue bitmap
*/
static int __ice_vsi_get_qs_contig(struct ice_qs_cfg *qs_cfg)
{
int offset, i;
mutex_lock(qs_cfg->qs_mutex);
offset = bitmap_find_next_zero_area(qs_cfg->pf_map, qs_cfg->pf_map_size,
0, qs_cfg->q_count, 0);
if (offset >= qs_cfg->pf_map_size) {
mutex_unlock(qs_cfg->qs_mutex);
return -ENOMEM;
}
bitmap_set(qs_cfg->pf_map, offset, qs_cfg->q_count);
for (i = 0; i < qs_cfg->q_count; i++)
qs_cfg->vsi_map[i + qs_cfg->vsi_map_offset] = i + offset;
mutex_unlock(qs_cfg->qs_mutex);
return 0;
}
/**
* __ice_vsi_get_qs_sc - Assign a scattered queues from PF to VSI
* @qs_cfg: gathered variables needed for pf->vsi queues assignment
*
* Return 0 on success and -ENOMEM in case of no left space in PF queue bitmap
*/
static int __ice_vsi_get_qs_sc(struct ice_qs_cfg *qs_cfg)
{
int i, index = 0;
mutex_lock(qs_cfg->qs_mutex);
for (i = 0; i < qs_cfg->q_count; i++) {
index = find_next_zero_bit(qs_cfg->pf_map,
qs_cfg->pf_map_size, index);
if (index >= qs_cfg->pf_map_size)
goto err_scatter;
set_bit(index, qs_cfg->pf_map);
qs_cfg->vsi_map[i + qs_cfg->vsi_map_offset] = index;
}
mutex_unlock(qs_cfg->qs_mutex);
return 0;
err_scatter:
for (index = 0; index < i; index++) {
clear_bit(qs_cfg->vsi_map[index], qs_cfg->pf_map);
qs_cfg->vsi_map[index + qs_cfg->vsi_map_offset] = 0;
}
mutex_unlock(qs_cfg->qs_mutex);
return -ENOMEM;
}
/**
* ice_pf_rxq_wait - Wait for a PF's Rx queue to be enabled or disabled
* @pf: the PF being configured
* @pf_q: the PF queue
* @ena: enable or disable state of the queue
*
* This routine will wait for the given Rx queue of the PF to reach the
* enabled or disabled state.
* Returns -ETIMEDOUT in case of failing to reach the requested state after
* multiple retries; else will return 0 in case of success.
*/
static int ice_pf_rxq_wait(struct ice_pf *pf, int pf_q, bool ena)
{
int i;
for (i = 0; i < ICE_Q_WAIT_MAX_RETRY; i++) {
if (ena == !!(rd32(&pf->hw, QRX_CTRL(pf_q)) &
QRX_CTRL_QENA_STAT_M))
return 0;
usleep_range(20, 40);
}
return -ETIMEDOUT;
}
/**
* ice_vsi_alloc_q_vector - Allocate memory for a single interrupt vector
* @vsi: the VSI being configured
* @v_idx: index of the vector in the VSI struct
*
* We allocate one q_vector. If allocation fails we return -ENOMEM.
*/
static int ice_vsi_alloc_q_vector(struct ice_vsi *vsi, int v_idx)
{
struct ice_pf *pf = vsi->back;
struct ice_q_vector *q_vector;
/* allocate q_vector */
q_vector = devm_kzalloc(&pf->pdev->dev, sizeof(*q_vector), GFP_KERNEL);
if (!q_vector)
return -ENOMEM;
q_vector->vsi = vsi;
q_vector->v_idx = v_idx;
if (vsi->type == ICE_VSI_VF)
goto out;
/* only set affinity_mask if the CPU is online */
if (cpu_online(v_idx))
cpumask_set_cpu(v_idx, &q_vector->affinity_mask);
/* This will not be called in the driver load path because the netdev
* will not be created yet. All other cases with register the NAPI
* handler here (i.e. resume, reset/rebuild, etc.)
*/
if (vsi->netdev)
netif_napi_add(vsi->netdev, &q_vector->napi, ice_napi_poll,
NAPI_POLL_WEIGHT);
out:
/* tie q_vector and VSI together */
vsi->q_vectors[v_idx] = q_vector;
return 0;
}
/**
* ice_free_q_vector - Free memory allocated for a specific interrupt vector
* @vsi: VSI having the memory freed
* @v_idx: index of the vector to be freed
*/
static void ice_free_q_vector(struct ice_vsi *vsi, int v_idx)
{
struct ice_q_vector *q_vector;
struct ice_pf *pf = vsi->back;
struct ice_ring *ring;
if (!vsi->q_vectors[v_idx]) {
dev_dbg(&pf->pdev->dev, "Queue vector at index %d not found\n",
v_idx);
return;
}
q_vector = vsi->q_vectors[v_idx];
ice_for_each_ring(ring, q_vector->tx)
ring->q_vector = NULL;
ice_for_each_ring(ring, q_vector->rx)
ring->q_vector = NULL;
/* only VSI with an associated netdev is set up with NAPI */
if (vsi->netdev)
netif_napi_del(&q_vector->napi);
devm_kfree(&pf->pdev->dev, q_vector);
vsi->q_vectors[v_idx] = NULL;
}
/**
* ice_cfg_itr_gran - set the ITR granularity to 2 usecs if not already set
* @hw: board specific structure
*/
static void ice_cfg_itr_gran(struct ice_hw *hw)
{
u32 regval = rd32(hw, GLINT_CTL);
/* no need to update global register if ITR gran is already set */
if (!(regval & GLINT_CTL_DIS_AUTOMASK_M) &&
(((regval & GLINT_CTL_ITR_GRAN_200_M) >>
GLINT_CTL_ITR_GRAN_200_S) == ICE_ITR_GRAN_US) &&
(((regval & GLINT_CTL_ITR_GRAN_100_M) >>
GLINT_CTL_ITR_GRAN_100_S) == ICE_ITR_GRAN_US) &&
(((regval & GLINT_CTL_ITR_GRAN_50_M) >>
GLINT_CTL_ITR_GRAN_50_S) == ICE_ITR_GRAN_US) &&
(((regval & GLINT_CTL_ITR_GRAN_25_M) >>
GLINT_CTL_ITR_GRAN_25_S) == ICE_ITR_GRAN_US))
return;
regval = ((ICE_ITR_GRAN_US << GLINT_CTL_ITR_GRAN_200_S) &
GLINT_CTL_ITR_GRAN_200_M) |
((ICE_ITR_GRAN_US << GLINT_CTL_ITR_GRAN_100_S) &
GLINT_CTL_ITR_GRAN_100_M) |
((ICE_ITR_GRAN_US << GLINT_CTL_ITR_GRAN_50_S) &
GLINT_CTL_ITR_GRAN_50_M) |
((ICE_ITR_GRAN_US << GLINT_CTL_ITR_GRAN_25_S) &
GLINT_CTL_ITR_GRAN_25_M);
wr32(hw, GLINT_CTL, regval);
}
/**
* ice_setup_tx_ctx - setup a struct ice_tlan_ctx instance
* @ring: The Tx ring to configure
* @tlan_ctx: Pointer to the Tx LAN queue context structure to be initialized
* @pf_q: queue index in the PF space
*
* Configure the Tx descriptor ring in TLAN context.
*/
static void
ice_setup_tx_ctx(struct ice_ring *ring, struct ice_tlan_ctx *tlan_ctx, u16 pf_q)
{
struct ice_vsi *vsi = ring->vsi;
struct ice_hw *hw = &vsi->back->hw;
tlan_ctx->base = ring->dma >> ICE_TLAN_CTX_BASE_S;
tlan_ctx->port_num = vsi->port_info->lport;
/* Transmit Queue Length */
tlan_ctx->qlen = ring->count;
ice_set_cgd_num(tlan_ctx, ring);
/* PF number */
tlan_ctx->pf_num = hw->pf_id;
/* queue belongs to a specific VSI type
* VF / VM index should be programmed per vmvf_type setting:
* for vmvf_type = VF, it is VF number between 0-256
* for vmvf_type = VM, it is VM number between 0-767
* for PF or EMP this field should be set to zero
*/
switch (vsi->type) {
case ICE_VSI_LB:
/* fall through */
case ICE_VSI_PF:
tlan_ctx->vmvf_type = ICE_TLAN_CTX_VMVF_TYPE_PF;
break;
case ICE_VSI_VF:
/* Firmware expects vmvf_num to be absolute VF ID */
tlan_ctx->vmvf_num = hw->func_caps.vf_base_id + vsi->vf_id;
tlan_ctx->vmvf_type = ICE_TLAN_CTX_VMVF_TYPE_VF;
break;
default:
return;
}
/* make sure the context is associated with the right VSI */
tlan_ctx->src_vsi = ice_get_hw_vsi_num(hw, vsi->idx);
tlan_ctx->tso_ena = ICE_TX_LEGACY;
tlan_ctx->tso_qnum = pf_q;
/* Legacy or Advanced Host Interface:
* 0: Advanced Host Interface
* 1: Legacy Host Interface
*/
tlan_ctx->legacy_int = ICE_TX_LEGACY;
}
/**
* ice_setup_rx_ctx - Configure a receive ring context
* @ring: The Rx ring to configure
*
* Configure the Rx descriptor ring in RLAN context.
*/
int ice_setup_rx_ctx(struct ice_ring *ring)
{
struct ice_vsi *vsi = ring->vsi;
struct ice_hw *hw = &vsi->back->hw;
u32 rxdid = ICE_RXDID_FLEX_NIC;
struct ice_rlan_ctx rlan_ctx;
u32 regval;
u16 pf_q;
int err;
/* what is Rx queue number in global space of 2K Rx queues */
pf_q = vsi->rxq_map[ring->q_index];
/* clear the context structure first */
memset(&rlan_ctx, 0, sizeof(rlan_ctx));
rlan_ctx.base = ring->dma >> 7;
rlan_ctx.qlen = ring->count;
/* Receive Packet Data Buffer Size.
* The Packet Data Buffer Size is defined in 128 byte units.
*/
rlan_ctx.dbuf = vsi->rx_buf_len >> ICE_RLAN_CTX_DBUF_S;
/* use 32 byte descriptors */
rlan_ctx.dsize = 1;
/* Strip the Ethernet CRC bytes before the packet is posted to host
* memory.
*/
rlan_ctx.crcstrip = 1;
/* L2TSEL flag defines the reported L2 Tags in the receive descriptor */
rlan_ctx.l2tsel = 1;
rlan_ctx.dtype = ICE_RX_DTYPE_NO_SPLIT;
rlan_ctx.hsplit_0 = ICE_RLAN_RX_HSPLIT_0_NO_SPLIT;
rlan_ctx.hsplit_1 = ICE_RLAN_RX_HSPLIT_1_NO_SPLIT;
/* This controls whether VLAN is stripped from inner headers
* The VLAN in the inner L2 header is stripped to the receive
* descriptor if enabled by this flag.
*/
rlan_ctx.showiv = 0;
/* Max packet size for this queue - must not be set to a larger value
* than 5 x DBUF
*/
rlan_ctx.rxmax = min_t(u16, vsi->max_frame,
ICE_MAX_CHAINED_RX_BUFS * vsi->rx_buf_len);
/* Rx queue threshold in units of 64 */
rlan_ctx.lrxqthresh = 1;
/* Enable Flexible Descriptors in the queue context which
* allows this driver to select a specific receive descriptor format
*/
if (vsi->type != ICE_VSI_VF) {
regval = rd32(hw, QRXFLXP_CNTXT(pf_q));
regval |= (rxdid << QRXFLXP_CNTXT_RXDID_IDX_S) &
QRXFLXP_CNTXT_RXDID_IDX_M;
/* increasing context priority to pick up profile ID;
* default is 0x01; setting to 0x03 to ensure profile
* is programming if prev context is of same priority
*/
regval |= (0x03 << QRXFLXP_CNTXT_RXDID_PRIO_S) &
QRXFLXP_CNTXT_RXDID_PRIO_M;
wr32(hw, QRXFLXP_CNTXT(pf_q), regval);
}
/* Absolute queue number out of 2K needs to be passed */
err = ice_write_rxq_ctx(hw, &rlan_ctx, pf_q);
if (err) {
dev_err(&vsi->back->pdev->dev,
"Failed to set LAN Rx queue context for absolute Rx queue %d error: %d\n",
pf_q, err);
return -EIO;
}
if (vsi->type == ICE_VSI_VF)
return 0;
/* init queue specific tail register */
ring->tail = hw->hw_addr + QRX_TAIL(pf_q);
writel(0, ring->tail);
ice_alloc_rx_bufs(ring, ICE_DESC_UNUSED(ring));
return 0;
}
/**
* __ice_vsi_get_qs - helper function for assigning queues from PF to VSI
* @qs_cfg: gathered variables needed for pf->vsi queues assignment
*
* This function first tries to find contiguous space. If it is not successful,
* it tries with the scatter approach.
*
* Return 0 on success and -ENOMEM in case of no left space in PF queue bitmap
*/
int __ice_vsi_get_qs(struct ice_qs_cfg *qs_cfg)
{
int ret = 0;
ret = __ice_vsi_get_qs_contig(qs_cfg);
if (ret) {
/* contig failed, so try with scatter approach */
qs_cfg->mapping_mode = ICE_VSI_MAP_SCATTER;
qs_cfg->q_count = min_t(u16, qs_cfg->q_count,
qs_cfg->scatter_count);
ret = __ice_vsi_get_qs_sc(qs_cfg);
}
return ret;
}
/**
* ice_vsi_ctrl_rx_ring - Start or stop a VSI's Rx ring
* @vsi: the VSI being configured
* @ena: start or stop the Rx rings
* @rxq_idx: Rx queue index
*/
int ice_vsi_ctrl_rx_ring(struct ice_vsi *vsi, bool ena, u16 rxq_idx)
{
int pf_q = vsi->rxq_map[rxq_idx];
struct ice_pf *pf = vsi->back;
struct ice_hw *hw = &pf->hw;
int ret = 0;
u32 rx_reg;
rx_reg = rd32(hw, QRX_CTRL(pf_q));
/* Skip if the queue is already in the requested state */
if (ena == !!(rx_reg & QRX_CTRL_QENA_STAT_M))
return 0;
/* turn on/off the queue */
if (ena)
rx_reg |= QRX_CTRL_QENA_REQ_M;
else
rx_reg &= ~QRX_CTRL_QENA_REQ_M;
wr32(hw, QRX_CTRL(pf_q), rx_reg);
/* wait for the change to finish */
ret = ice_pf_rxq_wait(pf, pf_q, ena);
if (ret)
dev_err(&pf->pdev->dev,
"VSI idx %d Rx ring %d %sable timeout\n",
vsi->idx, pf_q, (ena ? "en" : "dis"));
return ret;
}
/**
* ice_vsi_alloc_q_vectors - Allocate memory for interrupt vectors
* @vsi: the VSI being configured
*
* We allocate one q_vector per queue interrupt. If allocation fails we
* return -ENOMEM.
*/
int ice_vsi_alloc_q_vectors(struct ice_vsi *vsi)
{
struct ice_pf *pf = vsi->back;
int v_idx = 0, num_q_vectors;
int err;
if (vsi->q_vectors[0]) {
dev_dbg(&pf->pdev->dev, "VSI %d has existing q_vectors\n",
vsi->vsi_num);
return -EEXIST;
}
num_q_vectors = vsi->num_q_vectors;
for (v_idx = 0; v_idx < num_q_vectors; v_idx++) {
err = ice_vsi_alloc_q_vector(vsi, v_idx);
if (err)
goto err_out;
}
return 0;
err_out:
while (v_idx--)
ice_free_q_vector(vsi, v_idx);
dev_err(&pf->pdev->dev,
"Failed to allocate %d q_vector for VSI %d, ret=%d\n",
vsi->num_q_vectors, vsi->vsi_num, err);
vsi->num_q_vectors = 0;
return err;
}
/**
* ice_vsi_map_rings_to_vectors - Map VSI rings to interrupt vectors
* @vsi: the VSI being configured
*
* This function maps descriptor rings to the queue-specific vectors allotted
* through the MSI-X enabling code. On a constrained vector budget, we map Tx
* and Rx rings to the vector as "efficiently" as possible.
*/
void ice_vsi_map_rings_to_vectors(struct ice_vsi *vsi)
{
int q_vectors = vsi->num_q_vectors;
int tx_rings_rem, rx_rings_rem;
int v_id;
/* initially assigning remaining rings count to VSIs num queue value */
tx_rings_rem = vsi->num_txq;
rx_rings_rem = vsi->num_rxq;
for (v_id = 0; v_id < q_vectors; v_id++) {
struct ice_q_vector *q_vector = vsi->q_vectors[v_id];
int tx_rings_per_v, rx_rings_per_v, q_id, q_base;
/* Tx rings mapping to vector */
tx_rings_per_v = DIV_ROUND_UP(tx_rings_rem, q_vectors - v_id);
q_vector->num_ring_tx = tx_rings_per_v;
q_vector->tx.ring = NULL;
q_vector->tx.itr_idx = ICE_TX_ITR;
q_base = vsi->num_txq - tx_rings_rem;
for (q_id = q_base; q_id < (q_base + tx_rings_per_v); q_id++) {
struct ice_ring *tx_ring = vsi->tx_rings[q_id];
tx_ring->q_vector = q_vector;
tx_ring->next = q_vector->tx.ring;
q_vector->tx.ring = tx_ring;
}
tx_rings_rem -= tx_rings_per_v;
/* Rx rings mapping to vector */
rx_rings_per_v = DIV_ROUND_UP(rx_rings_rem, q_vectors - v_id);
q_vector->num_ring_rx = rx_rings_per_v;
q_vector->rx.ring = NULL;
q_vector->rx.itr_idx = ICE_RX_ITR;
q_base = vsi->num_rxq - rx_rings_rem;
for (q_id = q_base; q_id < (q_base + rx_rings_per_v); q_id++) {
struct ice_ring *rx_ring = vsi->rx_rings[q_id];
rx_ring->q_vector = q_vector;
rx_ring->next = q_vector->rx.ring;
q_vector->rx.ring = rx_ring;
}
rx_rings_rem -= rx_rings_per_v;
}
}
/**
* ice_vsi_free_q_vectors - Free memory allocated for interrupt vectors
* @vsi: the VSI having memory freed
*/
void ice_vsi_free_q_vectors(struct ice_vsi *vsi)
{
int v_idx;
ice_for_each_q_vector(vsi, v_idx)
ice_free_q_vector(vsi, v_idx);
}
/**
* ice_vsi_cfg_txq - Configure single Tx queue
* @vsi: the VSI that queue belongs to
* @ring: Tx ring to be configured
* @tc_q_idx: queue index within given TC
* @qg_buf: queue group buffer
* @tc: TC that Tx ring belongs to
*/
int
ice_vsi_cfg_txq(struct ice_vsi *vsi, struct ice_ring *ring, u16 tc_q_idx,
struct ice_aqc_add_tx_qgrp *qg_buf, u8 tc)
{
struct ice_tlan_ctx tlan_ctx = { 0 };
struct ice_aqc_add_txqs_perq *txq;
struct ice_pf *pf = vsi->back;
u8 buf_len = sizeof(*qg_buf);
enum ice_status status;
u16 pf_q;
pf_q = ring->reg_idx;
ice_setup_tx_ctx(ring, &tlan_ctx, pf_q);
/* copy context contents into the qg_buf */
qg_buf->txqs[0].txq_id = cpu_to_le16(pf_q);
ice_set_ctx((u8 *)&tlan_ctx, qg_buf->txqs[0].txq_ctx,
ice_tlan_ctx_info);
/* init queue specific tail reg. It is referred as
* transmit comm scheduler queue doorbell.
*/
ring->tail = pf->hw.hw_addr + QTX_COMM_DBELL(pf_q);
/* Add unique software queue handle of the Tx queue per
* TC into the VSI Tx ring
*/
ring->q_handle = tc_q_idx;
status = ice_ena_vsi_txq(vsi->port_info, vsi->idx, tc, ring->q_handle,
1, qg_buf, buf_len, NULL);
if (status) {
dev_err(&pf->pdev->dev,
"Failed to set LAN Tx queue context, error: %d\n",
status);
return -ENODEV;
}
/* Add Tx Queue TEID into the VSI Tx ring from the
* response. This will complete configuring and
* enabling the queue.
*/
txq = &qg_buf->txqs[0];
if (pf_q == le16_to_cpu(txq->txq_id))
ring->txq_teid = le32_to_cpu(txq->q_teid);
return 0;
}
/**
* ice_cfg_itr - configure the initial interrupt throttle values
* @hw: pointer to the HW structure
* @q_vector: interrupt vector that's being configured
*
* Configure interrupt throttling values for the ring containers that are
* associated with the interrupt vector passed in.
*/
void ice_cfg_itr(struct ice_hw *hw, struct ice_q_vector *q_vector)
{
ice_cfg_itr_gran(hw);
if (q_vector->num_ring_rx) {
struct ice_ring_container *rc = &q_vector->rx;
/* if this value is set then don't overwrite with default */
if (!rc->itr_setting)
rc->itr_setting = ICE_DFLT_RX_ITR;
rc->target_itr = ITR_TO_REG(rc->itr_setting);
rc->next_update = jiffies + 1;
rc->current_itr = rc->target_itr;
wr32(hw, GLINT_ITR(rc->itr_idx, q_vector->reg_idx),
ITR_REG_ALIGN(rc->current_itr) >> ICE_ITR_GRAN_S);
}
if (q_vector->num_ring_tx) {
struct ice_ring_container *rc = &q_vector->tx;
/* if this value is set then don't overwrite with default */
if (!rc->itr_setting)
rc->itr_setting = ICE_DFLT_TX_ITR;
rc->target_itr = ITR_TO_REG(rc->itr_setting);
rc->next_update = jiffies + 1;
rc->current_itr = rc->target_itr;
wr32(hw, GLINT_ITR(rc->itr_idx, q_vector->reg_idx),
ITR_REG_ALIGN(rc->current_itr) >> ICE_ITR_GRAN_S);
}
}
/**
* ice_cfg_txq_interrupt - configure interrupt on Tx queue
* @vsi: the VSI being configured
* @txq: Tx queue being mapped to MSI-X vector
* @msix_idx: MSI-X vector index within the function
* @itr_idx: ITR index of the interrupt cause
*
* Configure interrupt on Tx queue by associating Tx queue to MSI-X vector
* within the function space.
*/
void
ice_cfg_txq_interrupt(struct ice_vsi *vsi, u16 txq, u16 msix_idx, u16 itr_idx)
{
struct ice_pf *pf = vsi->back;
struct ice_hw *hw = &pf->hw;
u32 val;
itr_idx = (itr_idx << QINT_TQCTL_ITR_INDX_S) & QINT_TQCTL_ITR_INDX_M;
val = QINT_TQCTL_CAUSE_ENA_M | itr_idx |
((msix_idx << QINT_TQCTL_MSIX_INDX_S) & QINT_TQCTL_MSIX_INDX_M);
wr32(hw, QINT_TQCTL(vsi->txq_map[txq]), val);
}
/**
* ice_cfg_rxq_interrupt - configure interrupt on Rx queue
* @vsi: the VSI being configured
* @rxq: Rx queue being mapped to MSI-X vector
* @msix_idx: MSI-X vector index within the function
* @itr_idx: ITR index of the interrupt cause
*
* Configure interrupt on Rx queue by associating Rx queue to MSI-X vector
* within the function space.
*/
void
ice_cfg_rxq_interrupt(struct ice_vsi *vsi, u16 rxq, u16 msix_idx, u16 itr_idx)
{
struct ice_pf *pf = vsi->back;
struct ice_hw *hw = &pf->hw;
u32 val;
itr_idx = (itr_idx << QINT_RQCTL_ITR_INDX_S) & QINT_RQCTL_ITR_INDX_M;
val = QINT_RQCTL_CAUSE_ENA_M | itr_idx |
((msix_idx << QINT_RQCTL_MSIX_INDX_S) & QINT_RQCTL_MSIX_INDX_M);
wr32(hw, QINT_RQCTL(vsi->rxq_map[rxq]), val);
ice_flush(hw);
}
/**
* ice_trigger_sw_intr - trigger a software interrupt
* @hw: pointer to the HW structure
* @q_vector: interrupt vector to trigger the software interrupt for
*/
void ice_trigger_sw_intr(struct ice_hw *hw, struct ice_q_vector *q_vector)
{
wr32(hw, GLINT_DYN_CTL(q_vector->reg_idx),
(ICE_ITR_NONE << GLINT_DYN_CTL_ITR_INDX_S) |
GLINT_DYN_CTL_SWINT_TRIG_M |
GLINT_DYN_CTL_INTENA_M);
}
/**
* ice_vsi_stop_tx_ring - Disable single Tx ring
* @vsi: the VSI being configured
* @rst_src: reset source
* @rel_vmvf_num: Relative ID of VF/VM
* @ring: Tx ring to be stopped
* @txq_meta: Meta data of Tx ring to be stopped
*/
int
ice_vsi_stop_tx_ring(struct ice_vsi *vsi, enum ice_disq_rst_src rst_src,
u16 rel_vmvf_num, struct ice_ring *ring,
struct ice_txq_meta *txq_meta)
{
struct ice_pf *pf = vsi->back;
struct ice_q_vector *q_vector;
struct ice_hw *hw = &pf->hw;
enum ice_status status;
u32 val;
/* clear cause_ena bit for disabled queues */
val = rd32(hw, QINT_TQCTL(ring->reg_idx));
val &= ~QINT_TQCTL_CAUSE_ENA_M;
wr32(hw, QINT_TQCTL(ring->reg_idx), val);
/* software is expected to wait for 100 ns */
ndelay(100);
/* trigger a software interrupt for the vector
* associated to the queue to schedule NAPI handler
*/
q_vector = ring->q_vector;
if (q_vector)
ice_trigger_sw_intr(hw, q_vector);
status = ice_dis_vsi_txq(vsi->port_info, txq_meta->vsi_idx,
txq_meta->tc, 1, &txq_meta->q_handle,
&txq_meta->q_id, &txq_meta->q_teid, rst_src,
rel_vmvf_num, NULL);
/* if the disable queue command was exercised during an
* active reset flow, ICE_ERR_RESET_ONGOING is returned.
* This is not an error as the reset operation disables
* queues at the hardware level anyway.
*/
if (status == ICE_ERR_RESET_ONGOING) {
dev_dbg(&vsi->back->pdev->dev,
"Reset in progress. LAN Tx queues already disabled\n");
} else if (status == ICE_ERR_DOES_NOT_EXIST) {
dev_dbg(&vsi->back->pdev->dev,
"LAN Tx queues do not exist, nothing to disable\n");
} else if (status) {
dev_err(&vsi->back->pdev->dev,
"Failed to disable LAN Tx queues, error: %d\n", status);
return -ENODEV;
}
return 0;
}
/**
* ice_fill_txq_meta - Prepare the Tx queue's meta data
* @vsi: VSI that ring belongs to
* @ring: ring that txq_meta will be based on
* @txq_meta: a helper struct that wraps Tx queue's information
*
* Set up a helper struct that will contain all the necessary fields that
* are needed for stopping Tx queue
*/
void
ice_fill_txq_meta(struct ice_vsi *vsi, struct ice_ring *ring,
struct ice_txq_meta *txq_meta)
{
u8 tc;
if (IS_ENABLED(CONFIG_DCB))
tc = ring->dcb_tc;
else
tc = 0;
txq_meta->q_id = ring->reg_idx;
txq_meta->q_teid = ring->txq_teid;
txq_meta->q_handle = ring->q_handle;
txq_meta->vsi_idx = vsi->idx;
txq_meta->tc = tc;
}

31
drivers/net/ethernet/intel/ice/ice_base.h Normal file
View File

@ -0,0 +1,31 @@
/* SPDX-License-Identifier: GPL-2.0 */
/* Copyright (c) 2019, Intel Corporation. */
#ifndef _ICE_BASE_H_
#define _ICE_BASE_H_
#include "ice.h"
int ice_setup_rx_ctx(struct ice_ring *ring);
int __ice_vsi_get_qs(struct ice_qs_cfg *qs_cfg);
int ice_vsi_ctrl_rx_ring(struct ice_vsi *vsi, bool ena, u16 rxq_idx);
int ice_vsi_alloc_q_vectors(struct ice_vsi *vsi);
void ice_vsi_map_rings_to_vectors(struct ice_vsi *vsi);
void ice_vsi_free_q_vectors(struct ice_vsi *vsi);
int
ice_vsi_cfg_txq(struct ice_vsi *vsi, struct ice_ring *ring, u16 tc_q_idx,
struct ice_aqc_add_tx_qgrp *qg_buf, u8 tc);
void ice_cfg_itr(struct ice_hw *hw, struct ice_q_vector *q_vector);
void
ice_cfg_txq_interrupt(struct ice_vsi *vsi, u16 txq, u16 msix_idx, u16 itr_idx);
void
ice_cfg_rxq_interrupt(struct ice_vsi *vsi, u16 rxq, u16 msix_idx, u16 itr_idx);
void ice_trigger_sw_intr(struct ice_hw *hw, struct ice_q_vector *q_vector);
int
ice_vsi_stop_tx_ring(struct ice_vsi *vsi, enum ice_disq_rst_src rst_src,
u16 rel_vmvf_num, struct ice_ring *ring,
struct ice_txq_meta *txq_meta);
void
ice_fill_txq_meta(struct ice_vsi *vsi, struct ice_ring *ring,
struct ice_txq_meta *txq_meta);
#endif /* _ICE_BASE_H_ */

1
drivers/net/ethernet/intel/ice/ice_dcb_lib.h
View File

@ -5,6 +5,7 @@
#define _ICE_DCB_LIB_H_
#include "ice.h"
#include "ice_base.h"
#include "ice_lib.h"
#ifdef CONFIG_DCB

787
drivers/net/ethernet/intel/ice/ice_lib.c
View File

@ -2,234 +2,10 @@
/* Copyright (c) 2018, Intel Corporation. */
#include "ice.h"
#include "ice_base.h"
#include "ice_lib.h"
#include "ice_dcb_lib.h"
/**
* ice_setup_rx_ctx - Configure a receive ring context
* @ring: The Rx ring to configure
*
* Configure the Rx descriptor ring in RLAN context.
*/
static int ice_setup_rx_ctx(struct ice_ring *ring)
{
struct ice_vsi *vsi = ring->vsi;
struct ice_hw *hw = &vsi->back->hw;
u32 rxdid = ICE_RXDID_FLEX_NIC;
struct ice_rlan_ctx rlan_ctx;
u32 regval;
u16 pf_q;
int err;
/* what is Rx queue number in global space of 2K Rx queues */
pf_q = vsi->rxq_map[ring->q_index];
/* clear the context structure first */
memset(&rlan_ctx, 0, sizeof(rlan_ctx));
rlan_ctx.base = ring->dma >> 7;
rlan_ctx.qlen = ring->count;
/* Receive Packet Data Buffer Size.
* The Packet Data Buffer Size is defined in 128 byte units.
*/
rlan_ctx.dbuf = vsi->rx_buf_len >> ICE_RLAN_CTX_DBUF_S;
/* use 32 byte descriptors */
rlan_ctx.dsize = 1;
/* Strip the Ethernet CRC bytes before the packet is posted to host
* memory.
*/
rlan_ctx.crcstrip = 1;
/* L2TSEL flag defines the reported L2 Tags in the receive descriptor */
rlan_ctx.l2tsel = 1;
rlan_ctx.dtype = ICE_RX_DTYPE_NO_SPLIT;
rlan_ctx.hsplit_0 = ICE_RLAN_RX_HSPLIT_0_NO_SPLIT;
rlan_ctx.hsplit_1 = ICE_RLAN_RX_HSPLIT_1_NO_SPLIT;
/* This controls whether VLAN is stripped from inner headers
* The VLAN in the inner L2 header is stripped to the receive
* descriptor if enabled by this flag.
*/
rlan_ctx.showiv = 0;
/* Max packet size for this queue - must not be set to a larger value
* than 5 x DBUF
*/
rlan_ctx.rxmax = min_t(u16, vsi->max_frame,
ICE_MAX_CHAINED_RX_BUFS * vsi->rx_buf_len);
/* Rx queue threshold in units of 64 */
rlan_ctx.lrxqthresh = 1;
/* Enable Flexible Descriptors in the queue context which
* allows this driver to select a specific receive descriptor format
*/
if (vsi->type != ICE_VSI_VF) {
regval = rd32(hw, QRXFLXP_CNTXT(pf_q));
regval |= (rxdid << QRXFLXP_CNTXT_RXDID_IDX_S) &
QRXFLXP_CNTXT_RXDID_IDX_M;
/* increasing context priority to pick up profile ID;
* default is 0x01; setting to 0x03 to ensure profile
* is programming if prev context is of same priority
*/
regval |= (0x03 << QRXFLXP_CNTXT_RXDID_PRIO_S) &
QRXFLXP_CNTXT_RXDID_PRIO_M;
wr32(hw, QRXFLXP_CNTXT(pf_q), regval);
}
/* Absolute queue number out of 2K needs to be passed */
err = ice_write_rxq_ctx(hw, &rlan_ctx, pf_q);
if (err) {
dev_err(&vsi->back->pdev->dev,
"Failed to set LAN Rx queue context for absolute Rx queue %d error: %d\n",
pf_q, err);
return -EIO;
}
if (vsi->type == ICE_VSI_VF)
return 0;
/* init queue specific tail register */
ring->tail = hw->hw_addr + QRX_TAIL(pf_q);
writel(0, ring->tail);
ice_alloc_rx_bufs(ring, ICE_DESC_UNUSED(ring));
return 0;
}
/**
* ice_setup_tx_ctx - setup a struct ice_tlan_ctx instance
* @ring: The Tx ring to configure
* @tlan_ctx: Pointer to the Tx LAN queue context structure to be initialized
* @pf_q: queue index in the PF space
*
* Configure the Tx descriptor ring in TLAN context.
*/
static void
ice_setup_tx_ctx(struct ice_ring *ring, struct ice_tlan_ctx *tlan_ctx, u16 pf_q)
{
struct ice_vsi *vsi = ring->vsi;
struct ice_hw *hw = &vsi->back->hw;
tlan_ctx->base = ring->dma >> ICE_TLAN_CTX_BASE_S;
tlan_ctx->port_num = vsi->port_info->lport;
/* Transmit Queue Length */
tlan_ctx->qlen = ring->count;
ice_set_cgd_num(tlan_ctx, ring);
/* PF number */
tlan_ctx->pf_num = hw->pf_id;
/* queue belongs to a specific VSI type
* VF / VM index should be programmed per vmvf_type setting:
* for vmvf_type = VF, it is VF number between 0-256
* for vmvf_type = VM, it is VM number between 0-767
* for PF or EMP this field should be set to zero
*/
switch (vsi->type) {
case ICE_VSI_LB:
/* fall through */
case ICE_VSI_PF:
tlan_ctx->vmvf_type = ICE_TLAN_CTX_VMVF_TYPE_PF;
break;
case ICE_VSI_VF:
/* Firmware expects vmvf_num to be absolute VF ID */
tlan_ctx->vmvf_num = hw->func_caps.vf_base_id + vsi->vf_id;
tlan_ctx->vmvf_type = ICE_TLAN_CTX_VMVF_TYPE_VF;
break;
default:
return;
}
/* make sure the context is associated with the right VSI */
tlan_ctx->src_vsi = ice_get_hw_vsi_num(hw, vsi->idx);
tlan_ctx->tso_ena = ICE_TX_LEGACY;
tlan_ctx->tso_qnum = pf_q;
/* Legacy or Advanced Host Interface:
* 0: Advanced Host Interface
* 1: Legacy Host Interface
*/
tlan_ctx->legacy_int = ICE_TX_LEGACY;
}
/**
* ice_pf_rxq_wait - Wait for a PF's Rx queue to be enabled or disabled
* @pf: the PF being configured
* @pf_q: the PF queue
* @ena: enable or disable state of the queue
*
* This routine will wait for the given Rx queue of the PF to reach the
* enabled or disabled state.
* Returns -ETIMEDOUT in case of failing to reach the requested state after
* multiple retries; else will return 0 in case of success.
*/
static int ice_pf_rxq_wait(struct ice_pf *pf, int pf_q, bool ena)
{
int i;
for (i = 0; i < ICE_Q_WAIT_MAX_RETRY; i++) {
if (ena == !!(rd32(&pf->hw, QRX_CTRL(pf_q)) &
QRX_CTRL_QENA_STAT_M))
return 0;
usleep_range(20, 40);
}
return -ETIMEDOUT;
}
/**
* ice_vsi_ctrl_rx_ring - Start or stop a VSI's Rx ring
* @vsi: the VSI being configured
* @ena: start or stop the Rx rings
* @rxq_idx: Rx queue index
*/
#ifndef CONFIG_PCI_IOV
static
#endif /* !CONFIG_PCI_IOV */
int ice_vsi_ctrl_rx_ring(struct ice_vsi *vsi, bool ena, u16 rxq_idx)
{
int pf_q = vsi->rxq_map[rxq_idx];
struct ice_pf *pf = vsi->back;
struct ice_hw *hw = &pf->hw;
int ret = 0;
u32 rx_reg;
rx_reg = rd32(hw, QRX_CTRL(pf_q));
/* Skip if the queue is already in the requested state */
if (ena == !!(rx_reg & QRX_CTRL_QENA_STAT_M))
return 0;
/* turn on/off the queue */
if (ena)
rx_reg |= QRX_CTRL_QENA_REQ_M;
else
rx_reg &= ~QRX_CTRL_QENA_REQ_M;
wr32(hw, QRX_CTRL(pf_q), rx_reg);
/* wait for the change to finish */
ret = ice_pf_rxq_wait(pf, pf_q, ena);
if (ret)
dev_err(&pf->pdev->dev,
"VSI idx %d Rx ring %d %sable timeout\n",
vsi->idx, pf_q, (ena ? "en" : "dis"));
return ret;
}
/**
* ice_vsi_ctrl_rx_rings - Start or stop a VSI's Rx rings
* @vsi: the VSI being configured
@ -281,7 +57,6 @@ static int ice_vsi_alloc_arrays(struct ice_vsi *vsi)
if (!vsi->rxq_map)
goto err_rxq_map;
/* There is no need to allocate q_vectors for a loopback VSI. */
if (vsi->type == ICE_VSI_LB)
return 0;
@ -605,88 +380,6 @@ unlock_pf:
return vsi;
}
/**
* __ice_vsi_get_qs_contig - Assign a contiguous chunk of queues to VSI
* @qs_cfg: gathered variables needed for PF->VSI queues assignment
*
* Return 0 on success and -ENOMEM in case of no left space in PF queue bitmap
*/
static int __ice_vsi_get_qs_contig(struct ice_qs_cfg *qs_cfg)
{
int offset, i;
mutex_lock(qs_cfg->qs_mutex);
offset = bitmap_find_next_zero_area(qs_cfg->pf_map, qs_cfg->pf_map_size,
0, qs_cfg->q_count, 0);
if (offset >= qs_cfg->pf_map_size) {
mutex_unlock(qs_cfg->qs_mutex);
return -ENOMEM;
}
bitmap_set(qs_cfg->pf_map, offset, qs_cfg->q_count);
for (i = 0; i < qs_cfg->q_count; i++)
qs_cfg->vsi_map[i + qs_cfg->vsi_map_offset] = i + offset;
mutex_unlock(qs_cfg->qs_mutex);
return 0;
}
/**
* __ice_vsi_get_qs_sc - Assign a scattered queues from PF to VSI
* @qs_cfg: gathered variables needed for pf->vsi queues assignment
*
* Return 0 on success and -ENOMEM in case of no left space in PF queue bitmap
*/
static int __ice_vsi_get_qs_sc(struct ice_qs_cfg *qs_cfg)
{
int i, index = 0;
mutex_lock(qs_cfg->qs_mutex);
for (i = 0; i < qs_cfg->q_count; i++) {
index = find_next_zero_bit(qs_cfg->pf_map,
qs_cfg->pf_map_size, index);
if (index >= qs_cfg->pf_map_size)
goto err_scatter;
set_bit(index, qs_cfg->pf_map);
qs_cfg->vsi_map[i + qs_cfg->vsi_map_offset] = index;
}
mutex_unlock(qs_cfg->qs_mutex);
return 0;
err_scatter:
for (index = 0; index < i; index++) {
clear_bit(qs_cfg->vsi_map[index], qs_cfg->pf_map);
qs_cfg->vsi_map[index + qs_cfg->vsi_map_offset] = 0;
}
mutex_unlock(qs_cfg->qs_mutex);
return -ENOMEM;
}
/**
* __ice_vsi_get_qs - helper function for assigning queues from PF to VSI
* @qs_cfg: gathered variables needed for pf->vsi queues assignment
*
* This function first tries to find contiguous space. If it is not successful,
* it tries with the scatter approach.
*
* Return 0 on success and -ENOMEM in case of no left space in PF queue bitmap
*/
static int __ice_vsi_get_qs(struct ice_qs_cfg *qs_cfg)
{
int ret = 0;
ret = __ice_vsi_get_qs_contig(qs_cfg);
if (ret) {
/* contig failed, so try with scatter approach */
qs_cfg->mapping_mode = ICE_VSI_MAP_SCATTER;
qs_cfg->q_count = min_t(u16, qs_cfg->q_count,
qs_cfg->scatter_count);
ret = __ice_vsi_get_qs_sc(qs_cfg);
}
return ret;
}
/**
* ice_vsi_get_qs - Assign queues from PF to VSI
* @vsi: the VSI to assign queues to
@ -1097,129 +790,6 @@ static int ice_vsi_init(struct ice_vsi *vsi)
return ret;
}
/**
* ice_free_q_vector - Free memory allocated for a specific interrupt vector
* @vsi: VSI having the memory freed
* @v_idx: index of the vector to be freed
*/
static void ice_free_q_vector(struct ice_vsi *vsi, int v_idx)
{
struct ice_q_vector *q_vector;
struct ice_pf *pf = vsi->back;
struct ice_ring *ring;
if (!vsi->q_vectors[v_idx]) {
dev_dbg(&pf->pdev->dev, "Queue vector at index %d not found\n",
v_idx);
return;
}
q_vector = vsi->q_vectors[v_idx];
ice_for_each_ring(ring, q_vector->tx)
ring->q_vector = NULL;
ice_for_each_ring(ring, q_vector->rx)
ring->q_vector = NULL;
/* only VSI with an associated netdev is set up with NAPI */
if (vsi->netdev)
netif_napi_del(&q_vector->napi);
devm_kfree(&pf->pdev->dev, q_vector);
vsi->q_vectors[v_idx] = NULL;
}
/**
* ice_vsi_free_q_vectors - Free memory allocated for interrupt vectors
* @vsi: the VSI having memory freed
*/
void ice_vsi_free_q_vectors(struct ice_vsi *vsi)
{
int v_idx;
ice_for_each_q_vector(vsi, v_idx)
ice_free_q_vector(vsi, v_idx);
}
/**
* ice_vsi_alloc_q_vector - Allocate memory for a single interrupt vector
* @vsi: the VSI being configured
* @v_idx: index of the vector in the VSI struct
*
* We allocate one q_vector. If allocation fails we return -ENOMEM.
*/
static int ice_vsi_alloc_q_vector(struct ice_vsi *vsi, int v_idx)
{
struct ice_pf *pf = vsi->back;
struct ice_q_vector *q_vector;
/* allocate q_vector */
q_vector = devm_kzalloc(&pf->pdev->dev, sizeof(*q_vector), GFP_KERNEL);
if (!q_vector)
return -ENOMEM;
q_vector->vsi = vsi;
q_vector->v_idx = v_idx;
if (vsi->type == ICE_VSI_VF)
goto out;
/* only set affinity_mask if the CPU is online */
if (cpu_online(v_idx))
cpumask_set_cpu(v_idx, &q_vector->affinity_mask);
/* This will not be called in the driver load path because the netdev
* will not be created yet. All other cases with register the NAPI
* handler here (i.e. resume, reset/rebuild, etc.)
*/
if (vsi->netdev)
netif_napi_add(vsi->netdev, &q_vector->napi, ice_napi_poll,
NAPI_POLL_WEIGHT);
out:
/* tie q_vector and VSI together */
vsi->q_vectors[v_idx] = q_vector;
return 0;
}
/**
* ice_vsi_alloc_q_vectors - Allocate memory for interrupt vectors
* @vsi: the VSI being configured
*
* We allocate one q_vector per queue interrupt. If allocation fails we
* return -ENOMEM.
*/
static int ice_vsi_alloc_q_vectors(struct ice_vsi *vsi)
{
struct ice_pf *pf = vsi->back;
int v_idx = 0, num_q_vectors;
int err;
if (vsi->q_vectors[0]) {
dev_dbg(&pf->pdev->dev, "VSI %d has existing q_vectors\n",
vsi->vsi_num);
return -EEXIST;
}
num_q_vectors = vsi->num_q_vectors;
for (v_idx = 0; v_idx < num_q_vectors; v_idx++) {
err = ice_vsi_alloc_q_vector(vsi, v_idx);
if (err)
goto err_out;
}
return 0;
err_out:
while (v_idx--)
ice_free_q_vector(vsi, v_idx);
dev_err(&pf->pdev->dev,
"Failed to allocate %d q_vector for VSI %d, ret=%d\n",
vsi->num_q_vectors, vsi->vsi_num, err);
vsi->num_q_vectors = 0;
return err;
}
/**
* ice_vsi_setup_vector_base - Set up the base vector for the given VSI
* @vsi: ptr to the VSI
@ -1340,66 +910,6 @@ err_out:
return -ENOMEM;
}
/**
* ice_vsi_map_rings_to_vectors - Map VSI rings to interrupt vectors
* @vsi: the VSI being configured
*
* This function maps descriptor rings to the queue-specific vectors allotted
* through the MSI-X enabling code. On a constrained vector budget, we map Tx
* and Rx rings to the vector as "efficiently" as possible.
*/
#ifdef CONFIG_DCB
void ice_vsi_map_rings_to_vectors(struct ice_vsi *vsi)
#else
static void ice_vsi_map_rings_to_vectors(struct ice_vsi *vsi)
#endif /* CONFIG_DCB */
{
int q_vectors = vsi->num_q_vectors;
int tx_rings_rem, rx_rings_rem;
int v_id;
/* initially assigning remaining rings count to VSIs num queue value */
tx_rings_rem = vsi->num_txq;
rx_rings_rem = vsi->num_rxq;
for (v_id = 0; v_id < q_vectors; v_id++) {
struct ice_q_vector *q_vector = vsi->q_vectors[v_id];
int tx_rings_per_v, rx_rings_per_v, q_id, q_base;
/* Tx rings mapping to vector */
tx_rings_per_v = DIV_ROUND_UP(tx_rings_rem, q_vectors - v_id);
q_vector->num_ring_tx = tx_rings_per_v;
q_vector->tx.ring = NULL;
q_vector->tx.itr_idx = ICE_TX_ITR;
q_base = vsi->num_txq - tx_rings_rem;
for (q_id = q_base; q_id < (q_base + tx_rings_per_v); q_id++) {
struct ice_ring *tx_ring = vsi->tx_rings[q_id];
tx_ring->q_vector = q_vector;
tx_ring->next = q_vector->tx.ring;
q_vector->tx.ring = tx_ring;
}
tx_rings_rem -= tx_rings_per_v;
/* Rx rings mapping to vector */
rx_rings_per_v = DIV_ROUND_UP(rx_rings_rem, q_vectors - v_id);
q_vector->num_ring_rx = rx_rings_per_v;
q_vector->rx.ring = NULL;
q_vector->rx.itr_idx = ICE_RX_ITR;
q_base = vsi->num_rxq - rx_rings_rem;
for (q_id = q_base; q_id < (q_base + rx_rings_per_v); q_id++) {
struct ice_ring *rx_ring = vsi->rx_rings[q_id];
rx_ring->q_vector = q_vector;
rx_ring->next = q_vector->rx.ring;
q_vector->rx.ring = rx_ring;
}
rx_rings_rem -= rx_rings_per_v;
}
}
/**
* ice_vsi_manage_rss_lut - disable/enable RSS
* @vsi: the VSI being changed
@ -1711,62 +1221,6 @@ setup_rings:
return 0;
}
/**
* ice_vsi_cfg_txq - Configure single Tx queue
* @vsi: the VSI that queue belongs to
* @ring: Tx ring to be configured
* @tc_q_idx: queue index within given TC
* @qg_buf: queue group buffer
* @tc: TC that Tx ring belongs to
*/
static int
ice_vsi_cfg_txq(struct ice_vsi *vsi, struct ice_ring *ring, u16 tc_q_idx,
struct ice_aqc_add_tx_qgrp *qg_buf, u8 tc)
{
struct ice_tlan_ctx tlan_ctx = { 0 };
struct ice_aqc_add_txqs_perq *txq;
struct ice_pf *pf = vsi->back;
u8 buf_len = sizeof(*qg_buf);
enum ice_status status;
u16 pf_q;
pf_q = ring->reg_idx;
ice_setup_tx_ctx(ring, &tlan_ctx, pf_q);
/* copy context contents into the qg_buf */
qg_buf->txqs[0].txq_id = cpu_to_le16(pf_q);
ice_set_ctx((u8 *)&tlan_ctx, qg_buf->txqs[0].txq_ctx,
ice_tlan_ctx_info);
/* init queue specific tail reg. It is referred as
* transmit comm scheduler queue doorbell.
*/
ring->tail = pf->hw.hw_addr + QTX_COMM_DBELL(pf_q);
/* Add unique software queue handle of the Tx queue per
* TC into the VSI Tx ring
*/
ring->q_handle = tc_q_idx;
status = ice_ena_vsi_txq(vsi->port_info, vsi->idx, tc, ring->q_handle,
1, qg_buf, buf_len, NULL);
if (status) {
dev_err(&pf->pdev->dev,
"Failed to set LAN Tx queue context, error: %d\n",
status);
return -ENODEV;
}
/* Add Tx Queue TEID into the VSI Tx ring from the
* response. This will complete configuring and
* enabling the queue.
*/
txq = &qg_buf->txqs[0];
if (pf_q == le16_to_cpu(txq->txq_id))
ring->txq_teid = le32_to_cpu(txq->q_teid);
return 0;
}
/**
* ice_vsi_cfg_txqs - Configure the VSI for Tx
* @vsi: the VSI being configured
@ -1839,141 +1293,6 @@ u32 ice_intrl_usec_to_reg(u8 intrl, u8 gran)
return 0;
}
/**
* ice_cfg_itr_gran - set the ITR granularity to 2 usecs if not already set
* @hw: board specific structure
*/
static void ice_cfg_itr_gran(struct ice_hw *hw)
{
u32 regval = rd32(hw, GLINT_CTL);
/* no need to update global register if ITR gran is already set */
if (!(regval & GLINT_CTL_DIS_AUTOMASK_M) &&
(((regval & GLINT_CTL_ITR_GRAN_200_M) >>
GLINT_CTL_ITR_GRAN_200_S) == ICE_ITR_GRAN_US) &&
(((regval & GLINT_CTL_ITR_GRAN_100_M) >>
GLINT_CTL_ITR_GRAN_100_S) == ICE_ITR_GRAN_US) &&
(((regval & GLINT_CTL_ITR_GRAN_50_M) >>
GLINT_CTL_ITR_GRAN_50_S) == ICE_ITR_GRAN_US) &&
(((regval & GLINT_CTL_ITR_GRAN_25_M) >>
GLINT_CTL_ITR_GRAN_25_S) == ICE_ITR_GRAN_US))
return;
regval = ((ICE_ITR_GRAN_US << GLINT_CTL_ITR_GRAN_200_S) &
GLINT_CTL_ITR_GRAN_200_M) |
((ICE_ITR_GRAN_US << GLINT_CTL_ITR_GRAN_100_S) &
GLINT_CTL_ITR_GRAN_100_M) |
((ICE_ITR_GRAN_US << GLINT_CTL_ITR_GRAN_50_S) &
GLINT_CTL_ITR_GRAN_50_M) |
((ICE_ITR_GRAN_US << GLINT_CTL_ITR_GRAN_25_S) &
GLINT_CTL_ITR_GRAN_25_M);
wr32(hw, GLINT_CTL, regval);
}
/**
* ice_cfg_itr - configure the initial interrupt throttle values
* @hw: pointer to the HW structure
* @q_vector: interrupt vector that's being configured
*
* Configure interrupt throttling values for the ring containers that are
* associated with the interrupt vector passed in.
*/
static void
ice_cfg_itr(struct ice_hw *hw, struct ice_q_vector *q_vector)
{
ice_cfg_itr_gran(hw);
if (q_vector->num_ring_rx) {
struct ice_ring_container *rc = &q_vector->rx;
/* if this value is set then don't overwrite with default */
if (!rc->itr_setting)
rc->itr_setting = ICE_DFLT_RX_ITR;
rc->target_itr = ITR_TO_REG(rc->itr_setting);
rc->next_update = jiffies + 1;
rc->current_itr = rc->target_itr;
wr32(hw, GLINT_ITR(rc->itr_idx, q_vector->reg_idx),
ITR_REG_ALIGN(rc->current_itr) >> ICE_ITR_GRAN_S);
}
if (q_vector->num_ring_tx) {
struct ice_ring_container *rc = &q_vector->tx;
/* if this value is set then don't overwrite with default */
if (!rc->itr_setting)
rc->itr_setting = ICE_DFLT_TX_ITR;
rc->target_itr = ITR_TO_REG(rc->itr_setting);
rc->next_update = jiffies + 1;
rc->current_itr = rc->target_itr;
wr32(hw, GLINT_ITR(rc->itr_idx, q_vector->reg_idx),
ITR_REG_ALIGN(rc->current_itr) >> ICE_ITR_GRAN_S);
}
}
/**
* ice_cfg_txq_interrupt - configure interrupt on Tx queue
* @vsi: the VSI being configured
* @txq: Tx queue being mapped to MSI-X vector
* @msix_idx: MSI-X vector index within the function
* @itr_idx: ITR index of the interrupt cause
*
* Configure interrupt on Tx queue by associating Tx queue to MSI-X vector
* within the function space.
*/
#ifdef CONFIG_PCI_IOV
void
ice_cfg_txq_interrupt(struct ice_vsi *vsi, u16 txq, u16 msix_idx, u16 itr_idx)
#else
static void
ice_cfg_txq_interrupt(struct ice_vsi *vsi, u16 txq, u16 msix_idx, u16 itr_idx)
#endif /* CONFIG_PCI_IOV */
{
struct ice_pf *pf = vsi->back;
struct ice_hw *hw = &pf->hw;
u32 val;
itr_idx = (itr_idx << QINT_TQCTL_ITR_INDX_S) & QINT_TQCTL_ITR_INDX_M;
val = QINT_TQCTL_CAUSE_ENA_M | itr_idx |
((msix_idx << QINT_TQCTL_MSIX_INDX_S) & QINT_TQCTL_MSIX_INDX_M);
wr32(hw, QINT_TQCTL(vsi->txq_map[txq]), val);
}
/**
* ice_cfg_rxq_interrupt - configure interrupt on Rx queue
* @vsi: the VSI being configured
* @rxq: Rx queue being mapped to MSI-X vector
* @msix_idx: MSI-X vector index within the function
* @itr_idx: ITR index of the interrupt cause
*
* Configure interrupt on Rx queue by associating Rx queue to MSI-X vector
* within the function space.
*/
#ifdef CONFIG_PCI_IOV
void
ice_cfg_rxq_interrupt(struct ice_vsi *vsi, u16 rxq, u16 msix_idx, u16 itr_idx)
#else
static void
ice_cfg_rxq_interrupt(struct ice_vsi *vsi, u16 rxq, u16 msix_idx, u16 itr_idx)
#endif /* CONFIG_PCI_IOV */
{
struct ice_pf *pf = vsi->back;
struct ice_hw *hw = &pf->hw;
u32 val;
itr_idx = (itr_idx << QINT_RQCTL_ITR_INDX_S) & QINT_RQCTL_ITR_INDX_M;
val = QINT_RQCTL_CAUSE_ENA_M | itr_idx |
((msix_idx << QINT_RQCTL_MSIX_INDX_S) & QINT_RQCTL_MSIX_INDX_M);
wr32(hw, QINT_RQCTL(vsi->rxq_map[rxq]), val);
ice_flush(hw);
}
/**
* ice_vsi_cfg_msix - MSIX mode Interrupt Config in the HW
* @vsi: the VSI being configured
@ -2133,109 +1452,6 @@ int ice_vsi_stop_rx_rings(struct ice_vsi *vsi)
return ice_vsi_ctrl_rx_rings(vsi, false);
}
/**
* ice_trigger_sw_intr - trigger a software interrupt
* @hw: pointer to the HW structure
* @q_vector: interrupt vector to trigger the software interrupt for
*/
void ice_trigger_sw_intr(struct ice_hw *hw, struct ice_q_vector *q_vector)
{
wr32(hw, GLINT_DYN_CTL(q_vector->reg_idx),
(ICE_ITR_NONE << GLINT_DYN_CTL_ITR_INDX_S) |
GLINT_DYN_CTL_SWINT_TRIG_M |
GLINT_DYN_CTL_INTENA_M);
}
/**
* ice_vsi_stop_tx_ring - Disable single Tx ring
* @vsi: the VSI being configured
* @rst_src: reset source
* @rel_vmvf_num: Relative ID of VF/VM
* @ring: Tx ring to be stopped
* @txq_meta: Meta data of Tx ring to be stopped
*/
#ifndef CONFIG_PCI_IOV
static
#endif /* !CONFIG_PCI_IOV */
int
ice_vsi_stop_tx_ring(struct ice_vsi *vsi, enum ice_disq_rst_src rst_src,
u16 rel_vmvf_num, struct ice_ring *ring,
struct ice_txq_meta *txq_meta)
{
struct ice_pf *pf = vsi->back;
struct ice_q_vector *q_vector;
struct ice_hw *hw = &pf->hw;
enum ice_status status;
u32 val;
/* clear cause_ena bit for disabled queues */
val = rd32(hw, QINT_TQCTL(ring->reg_idx));
val &= ~QINT_TQCTL_CAUSE_ENA_M;
wr32(hw, QINT_TQCTL(ring->reg_idx), val);
/* software is expected to wait for 100 ns */
ndelay(100);
/* trigger a software interrupt for the vector
* associated to the queue to schedule NAPI handler
*/
q_vector = ring->q_vector;
if (q_vector)
ice_trigger_sw_intr(hw, q_vector);
status = ice_dis_vsi_txq(vsi->port_info, txq_meta->vsi_idx,
txq_meta->tc, 1, &txq_meta->q_handle,
&txq_meta->q_id, &txq_meta->q_teid, rst_src,
rel_vmvf_num, NULL);
/* if the disable queue command was exercised during an
* active reset flow, ICE_ERR_RESET_ONGOING is returned.
* This is not an error as the reset operation disables
* queues at the hardware level anyway.
*/
if (status == ICE_ERR_RESET_ONGOING) {
dev_dbg(&vsi->back->pdev->dev,
"Reset in progress. LAN Tx queues already disabled\n");
} else if (status == ICE_ERR_DOES_NOT_EXIST) {
dev_dbg(&vsi->back->pdev->dev,
"LAN Tx queues do not exist, nothing to disable\n");
} else if (status) {
dev_err(&vsi->back->pdev->dev,
"Failed to disable LAN Tx queues, error: %d\n", status);
return -ENODEV;
}
return 0;
}
/**
* ice_fill_txq_meta - Prepare the Tx queue's meta data
* @vsi: VSI that ring belongs to
* @ring: ring that txq_meta will be based on
* @txq_meta: a helper struct that wraps Tx queue's information
*
* Set up a helper struct that will contain all the necessary fields that
* are needed for stopping Tx queue
*/
#ifndef CONFIG_PCI_IOV
static
#endif /* !CONFIG_PCI_IOV */
void
ice_fill_txq_meta(struct ice_vsi *vsi, struct ice_ring *ring,
struct ice_txq_meta *txq_meta)
{
u8 tc = 0;
#ifdef CONFIG_DCB
tc = ring->dcb_tc;
#endif /* CONFIG_DCB */
txq_meta->q_id = ring->reg_idx;
txq_meta->q_teid = ring->txq_teid;
txq_meta->q_handle = ring->q_handle;
txq_meta->vsi_idx = vsi->idx;
txq_meta->tc = tc;
}
/**
* ice_vsi_stop_tx_rings - Disable Tx rings
* @vsi: the VSI being configured
@ -3085,7 +2301,6 @@ int ice_vsi_rebuild(struct ice_vsi *vsi)
if (ret < 0)
goto err_vsi;
switch (vsi->type) {
case ICE_VSI_PF:
ret = ice_vsi_alloc_q_vectors(vsi);

39
drivers/net/ethernet/intel/ice/ice_lib.h
View File

@ -6,19 +6,6 @@
#include "ice.h"
struct ice_txq_meta {
/* Tx-scheduler element identifier */
u32 q_teid;
/* Entry in VSI's txq_map bitmap */
u16 q_id;
/* Relative index of Tx queue within TC */
u16 q_handle;
/* VSI index that Tx queue belongs to */
u16 vsi_idx;
/* TC number that Tx queue belongs to */
u8 tc;
};
int
ice_add_mac_to_list(struct ice_vsi *vsi, struct list_head *add_list,
const u8 *macaddr);
@ -33,24 +20,6 @@ int ice_vsi_cfg_lan_txqs(struct ice_vsi *vsi);
void ice_vsi_cfg_msix(struct ice_vsi *vsi);
#ifdef CONFIG_PCI_IOV
void
ice_cfg_txq_interrupt(struct ice_vsi *vsi, u16 txq, u16 msix_idx, u16 itr_idx);
void
ice_cfg_rxq_interrupt(struct ice_vsi *vsi, u16 rxq, u16 msix_idx, u16 itr_idx);
int
ice_vsi_stop_tx_ring(struct ice_vsi *vsi, enum ice_disq_rst_src rst_src,
u16 rel_vmvf_num, struct ice_ring *ring,
struct ice_txq_meta *txq_meta);
void ice_fill_txq_meta(struct ice_vsi *vsi, struct ice_ring *ring,
struct ice_txq_meta *txq_meta);
int ice_vsi_ctrl_rx_ring(struct ice_vsi *vsi, bool ena, u16 rxq_idx);
#endif /* CONFIG_PCI_IOV */
int ice_vsi_add_vlan(struct ice_vsi *vsi, u16 vid);
int ice_vsi_kill_vlan(struct ice_vsi *vsi, u16 vid);
@ -98,16 +67,8 @@ int ice_vsi_rebuild(struct ice_vsi *vsi);
bool ice_is_reset_in_progress(unsigned long *state);
void ice_vsi_free_q_vectors(struct ice_vsi *vsi);
void ice_trigger_sw_intr(struct ice_hw *hw, struct ice_q_vector *q_vector);
void ice_vsi_put_qs(struct ice_vsi *vsi);
#ifdef CONFIG_DCB
void ice_vsi_map_rings_to_vectors(struct ice_vsi *vsi);
#endif /* CONFIG_DCB */
void ice_vsi_dis_irq(struct ice_vsi *vsi);
void ice_vsi_free_irq(struct ice_vsi *vsi);

1
drivers/net/ethernet/intel/ice/ice_main.c
View File

@ -6,6 +6,7 @@
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include "ice.h"
#include "ice_base.h"
#include "ice_lib.h"
#include "ice_dcb_lib.h"

2
drivers/net/ethernet/intel/ice/ice_txrx.h
View File

@ -205,9 +205,7 @@ struct ice_ring {
unsigned int size; /* length of descriptor ring in bytes */
u32 txq_teid; /* Added Tx queue TEID */
u16 rx_buf_len;
#ifdef CONFIG_DCB
u8 dcb_tc; /* Traffic class of ring */
#endif /* CONFIG_DCB */
} ____cacheline_internodealigned_in_smp;
struct ice_ring_container {

1
drivers/net/ethernet/intel/ice/ice_virtchnl_pf.c
View File

@ -2,6 +2,7 @@
/* Copyright (c) 2018, Intel Corporation. */
#include "ice.h"
#include "ice_base.h"
#include "ice_lib.h"
/**