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android-kvm / linux / 9314006dc3324cd449db90f23745c4f3e275d2d4 / . / drivers / net / ethernet / pensando / ionic / ionic_lif.c
blob: aaa00edd9d5b088152375b85e69179cd33bce5cf [file] [log] [blame]
// SPDX-License-Identifier: GPL-2.0
/* Copyright(c) 2017 - 2019 Pensando Systems, Inc */
#include <linux/printk.h>
#include <linux/dynamic_debug.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/rtnetlink.h>
#include <linux/interrupt.h>
#include <linux/pci.h>
#include <linux/cpumask.h>
#include "ionic.h"
#include "ionic_bus.h"
#include "ionic_lif.h"
#include "ionic_txrx.h"
#include "ionic_ethtool.h"
#include "ionic_debugfs.h"
/* queuetype support level */
static const u8 ionic_qtype_versions[IONIC_QTYPE_MAX] = {
[IONIC_QTYPE_ADMINQ] = 0, /* 0 = Base version with CQ support */
[IONIC_QTYPE_NOTIFYQ] = 0, /* 0 = Base version */
[IONIC_QTYPE_RXQ] = 0, /* 0 = Base version with CQ+SG support */
[IONIC_QTYPE_TXQ] = 1, /* 0 = Base version with CQ+SG support
* 1 = ... with Tx SG version 1
*/
};
static void ionic_lif_rx_mode(struct ionic_lif *lif, unsigned int rx_mode);
static int ionic_lif_addr_add(struct ionic_lif *lif, const u8 *addr);
static int ionic_lif_addr_del(struct ionic_lif *lif, const u8 *addr);
static void ionic_link_status_check(struct ionic_lif *lif);
static void ionic_lif_handle_fw_down(struct ionic_lif *lif);
static void ionic_lif_handle_fw_up(struct ionic_lif *lif);
static void ionic_lif_set_netdev_info(struct ionic_lif *lif);
static int ionic_start_queues(struct ionic_lif *lif);
static void ionic_stop_queues(struct ionic_lif *lif);
static void ionic_lif_queue_identify(struct ionic_lif *lif);
static void ionic_lif_deferred_work(struct work_struct *work)
{
struct ionic_lif *lif = container_of(work, struct ionic_lif, deferred.work);
struct ionic_deferred *def = &lif->deferred;
struct ionic_deferred_work *w = NULL;
spin_lock_bh(&def->lock);
if (!list_empty(&def->list)) {
w = list_first_entry(&def->list,
struct ionic_deferred_work, list);
list_del(&w->list);
}
spin_unlock_bh(&def->lock);
if (w) {
switch (w->type) {
case IONIC_DW_TYPE_RX_MODE:
ionic_lif_rx_mode(lif, w->rx_mode);
break;
case IONIC_DW_TYPE_RX_ADDR_ADD:
ionic_lif_addr_add(lif, w->addr);
break;
case IONIC_DW_TYPE_RX_ADDR_DEL:
ionic_lif_addr_del(lif, w->addr);
break;
case IONIC_DW_TYPE_LINK_STATUS:
ionic_link_status_check(lif);
break;
case IONIC_DW_TYPE_LIF_RESET:
if (w->fw_status)
ionic_lif_handle_fw_up(lif);
else
ionic_lif_handle_fw_down(lif);
break;
default:
break;
}
kfree(w);
schedule_work(&def->work);
}
}
void ionic_lif_deferred_enqueue(struct ionic_deferred *def,
struct ionic_deferred_work *work)
{
spin_lock_bh(&def->lock);
list_add_tail(&work->list, &def->list);
spin_unlock_bh(&def->lock);
schedule_work(&def->work);
}
static void ionic_link_status_check(struct ionic_lif *lif)
{
struct net_device *netdev = lif->netdev;
u16 link_status;
bool link_up;
if (!test_bit(IONIC_LIF_F_LINK_CHECK_REQUESTED, lif->state) ||
test_bit(IONIC_LIF_F_QUEUE_RESET, lif->state))
return;
link_status = le16_to_cpu(lif->info->status.link_status);
link_up = link_status == IONIC_PORT_OPER_STATUS_UP;
if (link_up) {
if (!netif_carrier_ok(netdev)) {
u32 link_speed;
ionic_port_identify(lif->ionic);
link_speed = le32_to_cpu(lif->info->status.link_speed);
netdev_info(netdev, "Link up - %d Gbps\n",
link_speed / 1000);
netif_carrier_on(netdev);
}
if (lif->netdev->flags & IFF_UP && netif_running(lif->netdev))
ionic_start_queues(lif);
} else {
if (netif_carrier_ok(netdev)) {
netdev_info(netdev, "Link down\n");
netif_carrier_off(netdev);
}
if (lif->netdev->flags & IFF_UP && netif_running(lif->netdev))
ionic_stop_queues(lif);
}
clear_bit(IONIC_LIF_F_LINK_CHECK_REQUESTED, lif->state);
}
void ionic_link_status_check_request(struct ionic_lif *lif)
{
struct ionic_deferred_work *work;
/* we only need one request outstanding at a time */
if (test_and_set_bit(IONIC_LIF_F_LINK_CHECK_REQUESTED, lif->state))
return;
if (in_interrupt()) {
work = kzalloc(sizeof(*work), GFP_ATOMIC);
if (!work)
return;
work->type = IONIC_DW_TYPE_LINK_STATUS;
ionic_lif_deferred_enqueue(&lif->deferred, work);
} else {
ionic_link_status_check(lif);
}
}
static irqreturn_t ionic_isr(int irq, void *data)
{
struct napi_struct *napi = data;
napi_schedule_irqoff(napi);
return IRQ_HANDLED;
}
static int ionic_request_irq(struct ionic_lif *lif, struct ionic_qcq *qcq)
{
struct ionic_intr_info *intr = &qcq->intr;
struct device *dev = lif->ionic->dev;
struct ionic_queue *q = &qcq->q;
const char *name;
if (lif->registered)
name = lif->netdev->name;
else
name = dev_name(dev);
snprintf(intr->name, sizeof(intr->name),
"%s-%s-%s", IONIC_DRV_NAME, name, q->name);
return devm_request_irq(dev, intr->vector, ionic_isr,
0, intr->name, &qcq->napi);
}
static int ionic_intr_alloc(struct ionic_lif *lif, struct ionic_intr_info *intr)
{
struct ionic *ionic = lif->ionic;
int index;
index = find_first_zero_bit(ionic->intrs, ionic->nintrs);
if (index == ionic->nintrs) {
netdev_warn(lif->netdev, "%s: no intr, index=%d nintrs=%d\n",
__func__, index, ionic->nintrs);
return -ENOSPC;
}
set_bit(index, ionic->intrs);
ionic_intr_init(&ionic->idev, intr, index);
return 0;
}
static void ionic_intr_free(struct ionic *ionic, int index)
{
if (index != IONIC_INTR_INDEX_NOT_ASSIGNED && index < ionic->nintrs)
clear_bit(index, ionic->intrs);
}
static int ionic_qcq_enable(struct ionic_qcq *qcq)
{
struct ionic_queue *q = &qcq->q;
struct ionic_lif *lif = q->lif;
struct ionic_dev *idev;
struct device *dev;
struct ionic_admin_ctx ctx = {
.work = COMPLETION_INITIALIZER_ONSTACK(ctx.work),
.cmd.q_control = {
.opcode = IONIC_CMD_Q_CONTROL,
.lif_index = cpu_to_le16(lif->index),
.type = q->type,
.index = cpu_to_le32(q->index),
.oper = IONIC_Q_ENABLE,
},
};
idev = &lif->ionic->idev;
dev = lif->ionic->dev;
dev_dbg(dev, "q_enable.index %d q_enable.qtype %d\n",
ctx.cmd.q_control.index, ctx.cmd.q_control.type);
if (qcq->flags & IONIC_QCQ_F_INTR) {
irq_set_affinity_hint(qcq->intr.vector,
&qcq->intr.affinity_mask);
napi_enable(&qcq->napi);
ionic_intr_clean(idev->intr_ctrl, qcq->intr.index);
ionic_intr_mask(idev->intr_ctrl, qcq->intr.index,
IONIC_INTR_MASK_CLEAR);
}
return ionic_adminq_post_wait(lif, &ctx);
}
static int ionic_qcq_disable(struct ionic_qcq *qcq)
{
struct ionic_queue *q = &qcq->q;
struct ionic_lif *lif = q->lif;
struct ionic_dev *idev;
struct device *dev;
struct ionic_admin_ctx ctx = {
.work = COMPLETION_INITIALIZER_ONSTACK(ctx.work),
.cmd.q_control = {
.opcode = IONIC_CMD_Q_CONTROL,
.lif_index = cpu_to_le16(lif->index),
.type = q->type,
.index = cpu_to_le32(q->index),
.oper = IONIC_Q_DISABLE,
},
};
idev = &lif->ionic->idev;
dev = lif->ionic->dev;
dev_dbg(dev, "q_disable.index %d q_disable.qtype %d\n",
ctx.cmd.q_control.index, ctx.cmd.q_control.type);
if (qcq->flags & IONIC_QCQ_F_INTR) {
ionic_intr_mask(idev->intr_ctrl, qcq->intr.index,
IONIC_INTR_MASK_SET);
synchronize_irq(qcq->intr.vector);
irq_set_affinity_hint(qcq->intr.vector, NULL);
napi_disable(&qcq->napi);
}
return ionic_adminq_post_wait(lif, &ctx);
}
static void ionic_lif_qcq_deinit(struct ionic_lif *lif, struct ionic_qcq *qcq)
{
struct ionic_dev *idev = &lif->ionic->idev;
if (!qcq)
return;
if (!(qcq->flags & IONIC_QCQ_F_INITED))
return;
if (qcq->flags & IONIC_QCQ_F_INTR) {
ionic_intr_mask(idev->intr_ctrl, qcq->intr.index,
IONIC_INTR_MASK_SET);
netif_napi_del(&qcq->napi);
}
qcq->flags &= ~IONIC_QCQ_F_INITED;
}
static void ionic_qcq_free(struct ionic_lif *lif, struct ionic_qcq *qcq)
{
struct device *dev = lif->ionic->dev;
if (!qcq)
return;
ionic_debugfs_del_qcq(qcq);
dma_free_coherent(dev, qcq->total_size, qcq->base, qcq->base_pa);
qcq->base = NULL;
qcq->base_pa = 0;
if (qcq->flags & IONIC_QCQ_F_INTR) {
irq_set_affinity_hint(qcq->intr.vector, NULL);
devm_free_irq(dev, qcq->intr.vector, &qcq->napi);
qcq->intr.vector = 0;
ionic_intr_free(lif->ionic, qcq->intr.index);
}
devm_kfree(dev, qcq->cq.info);
qcq->cq.info = NULL;
devm_kfree(dev, qcq->q.info);
qcq->q.info = NULL;
devm_kfree(dev, qcq);
}
static void ionic_qcqs_free(struct ionic_lif *lif)
{
struct device *dev = lif->ionic->dev;
unsigned int i;
if (lif->notifyqcq) {
ionic_qcq_free(lif, lif->notifyqcq);
lif->notifyqcq = NULL;
}
if (lif->adminqcq) {
ionic_qcq_free(lif, lif->adminqcq);
lif->adminqcq = NULL;
}
if (lif->rxqcqs) {
for (i = 0; i < lif->nxqs; i++)
if (lif->rxqcqs[i].stats)
devm_kfree(dev, lif->rxqcqs[i].stats);
devm_kfree(dev, lif->rxqcqs);
lif->rxqcqs = NULL;
}
if (lif->txqcqs) {
for (i = 0; i < lif->nxqs; i++)
if (lif->txqcqs[i].stats)
devm_kfree(dev, lif->txqcqs[i].stats);
devm_kfree(dev, lif->txqcqs);
lif->txqcqs = NULL;
}
}
static void ionic_link_qcq_interrupts(struct ionic_qcq *src_qcq,
struct ionic_qcq *n_qcq)
{
if (WARN_ON(n_qcq->flags & IONIC_QCQ_F_INTR)) {
ionic_intr_free(n_qcq->cq.lif->ionic, n_qcq->intr.index);
n_qcq->flags &= ~IONIC_QCQ_F_INTR;
}
n_qcq->intr.vector = src_qcq->intr.vector;
n_qcq->intr.index = src_qcq->intr.index;
}
static int ionic_qcq_alloc(struct ionic_lif *lif, unsigned int type,
unsigned int index,
const char *name, unsigned int flags,
unsigned int num_descs, unsigned int desc_size,
unsigned int cq_desc_size,
unsigned int sg_desc_size,
unsigned int pid, struct ionic_qcq **qcq)
{
struct ionic_dev *idev = &lif->ionic->idev;
u32 q_size, cq_size, sg_size, total_size;
struct device *dev = lif->ionic->dev;
void *q_base, *cq_base, *sg_base;
dma_addr_t cq_base_pa = 0;
dma_addr_t sg_base_pa = 0;
dma_addr_t q_base_pa = 0;
struct ionic_qcq *new;
int err;
*qcq = NULL;
q_size = num_descs * desc_size;
cq_size = num_descs * cq_desc_size;
sg_size = num_descs * sg_desc_size;
total_size = ALIGN(q_size, PAGE_SIZE) + ALIGN(cq_size, PAGE_SIZE);
/* Note: aligning q_size/cq_size is not enough due to cq_base
* address aligning as q_base could be not aligned to the page.
* Adding PAGE_SIZE.
*/
total_size += PAGE_SIZE;
if (flags & IONIC_QCQ_F_SG) {
total_size += ALIGN(sg_size, PAGE_SIZE);
total_size += PAGE_SIZE;
}
new = devm_kzalloc(dev, sizeof(*new), GFP_KERNEL);
if (!new) {
netdev_err(lif->netdev, "Cannot allocate queue structure\n");
err = -ENOMEM;
goto err_out;
}
new->flags = flags;
new->q.info = devm_kzalloc(dev, sizeof(*new->q.info) * num_descs,
GFP_KERNEL);
if (!new->q.info) {
netdev_err(lif->netdev, "Cannot allocate queue info\n");
err = -ENOMEM;
goto err_out;
}
new->q.type = type;
err = ionic_q_init(lif, idev, &new->q, index, name, num_descs,
desc_size, sg_desc_size, pid);
if (err) {
netdev_err(lif->netdev, "Cannot initialize queue\n");
goto err_out;
}
if (flags & IONIC_QCQ_F_INTR) {
err = ionic_intr_alloc(lif, &new->intr);
if (err) {
netdev_warn(lif->netdev, "no intr for %s: %d\n",
name, err);
goto err_out;
}
err = ionic_bus_get_irq(lif->ionic, new->intr.index);
if (err < 0) {
netdev_warn(lif->netdev, "no vector for %s: %d\n",
name, err);
goto err_out_free_intr;
}
new->intr.vector = err;
ionic_intr_mask_assert(idev->intr_ctrl, new->intr.index,
IONIC_INTR_MASK_SET);
err = ionic_request_irq(lif, new);
if (err) {
netdev_warn(lif->netdev, "irq request failed %d\n", err);
goto err_out_free_intr;
}
new->intr.cpu = cpumask_local_spread(new->intr.index,
dev_to_node(dev));
if (new->intr.cpu != -1)
cpumask_set_cpu(new->intr.cpu,
&new->intr.affinity_mask);
} else {
new->intr.index = IONIC_INTR_INDEX_NOT_ASSIGNED;
}
new->cq.info = devm_kzalloc(dev, sizeof(*new->cq.info) * num_descs,
GFP_KERNEL);
if (!new->cq.info) {
netdev_err(lif->netdev, "Cannot allocate completion queue info\n");
err = -ENOMEM;
goto err_out_free_irq;
}
err = ionic_cq_init(lif, &new->cq, &new->intr, num_descs, cq_desc_size);
if (err) {
netdev_err(lif->netdev, "Cannot initialize completion queue\n");
goto err_out_free_irq;
}
new->base = dma_alloc_coherent(dev, total_size, &new->base_pa,
GFP_KERNEL);
if (!new->base) {
netdev_err(lif->netdev, "Cannot allocate queue DMA memory\n");
err = -ENOMEM;
goto err_out_free_irq;
}
new->total_size = total_size;
q_base = new->base;
q_base_pa = new->base_pa;
cq_base = (void *)ALIGN((uintptr_t)q_base + q_size, PAGE_SIZE);
cq_base_pa = ALIGN(q_base_pa + q_size, PAGE_SIZE);
if (flags & IONIC_QCQ_F_SG) {
sg_base = (void *)ALIGN((uintptr_t)cq_base + cq_size,
PAGE_SIZE);
sg_base_pa = ALIGN(cq_base_pa + cq_size, PAGE_SIZE);
ionic_q_sg_map(&new->q, sg_base, sg_base_pa);
}
ionic_q_map(&new->q, q_base, q_base_pa);
ionic_cq_map(&new->cq, cq_base, cq_base_pa);
ionic_cq_bind(&new->cq, &new->q);
*qcq = new;
return 0;
err_out_free_irq:
if (flags & IONIC_QCQ_F_INTR)
devm_free_irq(dev, new->intr.vector, &new->napi);
err_out_free_intr:
if (flags & IONIC_QCQ_F_INTR)
ionic_intr_free(lif->ionic, new->intr.index);
err_out:
dev_err(dev, "qcq alloc of %s%d failed %d\n", name, index, err);
return err;
}
static int ionic_qcqs_alloc(struct ionic_lif *lif)
{
struct device *dev = lif->ionic->dev;
unsigned int q_list_size;
unsigned int flags;
int err;
int i;
flags = IONIC_QCQ_F_INTR;
err = ionic_qcq_alloc(lif, IONIC_QTYPE_ADMINQ, 0, "admin", flags,
IONIC_ADMINQ_LENGTH,
sizeof(struct ionic_admin_cmd),
sizeof(struct ionic_admin_comp),
0, lif->kern_pid, &lif->adminqcq);
if (err)
return err;
ionic_debugfs_add_qcq(lif, lif->adminqcq);
if (lif->ionic->nnqs_per_lif) {
flags = IONIC_QCQ_F_NOTIFYQ;
err = ionic_qcq_alloc(lif, IONIC_QTYPE_NOTIFYQ, 0, "notifyq",
flags, IONIC_NOTIFYQ_LENGTH,
sizeof(struct ionic_notifyq_cmd),
sizeof(union ionic_notifyq_comp),
0, lif->kern_pid, &lif->notifyqcq);
if (err)
goto err_out_free_adminqcq;
ionic_debugfs_add_qcq(lif, lif->notifyqcq);
/* Let the notifyq ride on the adminq interrupt */
ionic_link_qcq_interrupts(lif->adminqcq, lif->notifyqcq);
}
q_list_size = sizeof(*lif->txqcqs) * lif->nxqs;
err = -ENOMEM;
lif->txqcqs = devm_kzalloc(dev, q_list_size, GFP_KERNEL);
if (!lif->txqcqs)
goto err_out_free_notifyqcq;
for (i = 0; i < lif->nxqs; i++) {
lif->txqcqs[i].stats = devm_kzalloc(dev,
sizeof(struct ionic_q_stats),
GFP_KERNEL);
if (!lif->txqcqs[i].stats)
goto err_out_free_tx_stats;
}
lif->rxqcqs = devm_kzalloc(dev, q_list_size, GFP_KERNEL);
if (!lif->rxqcqs)
goto err_out_free_tx_stats;
for (i = 0; i < lif->nxqs; i++) {
lif->rxqcqs[i].stats = devm_kzalloc(dev,
sizeof(struct ionic_q_stats),
GFP_KERNEL);
if (!lif->rxqcqs[i].stats)
goto err_out_free_rx_stats;
}
return 0;
err_out_free_rx_stats:
for (i = 0; i < lif->nxqs; i++)
if (lif->rxqcqs[i].stats)
devm_kfree(dev, lif->rxqcqs[i].stats);
devm_kfree(dev, lif->rxqcqs);
lif->rxqcqs = NULL;
err_out_free_tx_stats:
for (i = 0; i < lif->nxqs; i++)
if (lif->txqcqs[i].stats)
devm_kfree(dev, lif->txqcqs[i].stats);
devm_kfree(dev, lif->txqcqs);
lif->txqcqs = NULL;
err_out_free_notifyqcq:
if (lif->notifyqcq) {
ionic_qcq_free(lif, lif->notifyqcq);
lif->notifyqcq = NULL;
}
err_out_free_adminqcq:
ionic_qcq_free(lif, lif->adminqcq);
lif->adminqcq = NULL;
return err;
}
static int ionic_lif_txq_init(struct ionic_lif *lif, struct ionic_qcq *qcq)
{
struct device *dev = lif->ionic->dev;
struct ionic_queue *q = &qcq->q;
struct ionic_cq *cq = &qcq->cq;
struct ionic_admin_ctx ctx = {
.work = COMPLETION_INITIALIZER_ONSTACK(ctx.work),
.cmd.q_init = {
.opcode = IONIC_CMD_Q_INIT,
.lif_index = cpu_to_le16(lif->index),
.type = q->type,
.ver = lif->qtype_info[q->type].version,
.index = cpu_to_le32(q->index),
.flags = cpu_to_le16(IONIC_QINIT_F_IRQ |
IONIC_QINIT_F_SG),
.intr_index = cpu_to_le16(lif->rxqcqs[q->index].qcq->intr.index),
.pid = cpu_to_le16(q->pid),
.ring_size = ilog2(q->num_descs),
.ring_base = cpu_to_le64(q->base_pa),
.cq_ring_base = cpu_to_le64(cq->base_pa),
.sg_ring_base = cpu_to_le64(q->sg_base_pa),
},
};
int err;
dev_dbg(dev, "txq_init.pid %d\n", ctx.cmd.q_init.pid);
dev_dbg(dev, "txq_init.index %d\n", ctx.cmd.q_init.index);
dev_dbg(dev, "txq_init.ring_base 0x%llx\n", ctx.cmd.q_init.ring_base);
dev_dbg(dev, "txq_init.ring_size %d\n", ctx.cmd.q_init.ring_size);
dev_dbg(dev, "txq_init.flags 0x%x\n", ctx.cmd.q_init.flags);
dev_dbg(dev, "txq_init.ver %d\n", ctx.cmd.q_init.ver);
q->tail = q->info;
q->head = q->tail;
cq->tail = cq->info;
err = ionic_adminq_post_wait(lif, &ctx);
if (err)
return err;
q->hw_type = ctx.comp.q_init.hw_type;
q->hw_index = le32_to_cpu(ctx.comp.q_init.hw_index);
q->dbval = IONIC_DBELL_QID(q->hw_index);
dev_dbg(dev, "txq->hw_type %d\n", q->hw_type);
dev_dbg(dev, "txq->hw_index %d\n", q->hw_index);
qcq->flags |= IONIC_QCQ_F_INITED;
return 0;
}
static int ionic_lif_rxq_init(struct ionic_lif *lif, struct ionic_qcq *qcq)
{
struct device *dev = lif->ionic->dev;
struct ionic_queue *q = &qcq->q;
struct ionic_cq *cq = &qcq->cq;
struct ionic_admin_ctx ctx = {
.work = COMPLETION_INITIALIZER_ONSTACK(ctx.work),
.cmd.q_init = {
.opcode = IONIC_CMD_Q_INIT,
.lif_index = cpu_to_le16(lif->index),
.type = q->type,
.ver = lif->qtype_info[q->type].version,
.index = cpu_to_le32(q->index),
.flags = cpu_to_le16(IONIC_QINIT_F_IRQ |
IONIC_QINIT_F_SG),
.intr_index = cpu_to_le16(cq->bound_intr->index),
.pid = cpu_to_le16(q->pid),
.ring_size = ilog2(q->num_descs),
.ring_base = cpu_to_le64(q->base_pa),
.cq_ring_base = cpu_to_le64(cq->base_pa),
.sg_ring_base = cpu_to_le64(q->sg_base_pa),
},
};
int err;
dev_dbg(dev, "rxq_init.pid %d\n", ctx.cmd.q_init.pid);
dev_dbg(dev, "rxq_init.index %d\n", ctx.cmd.q_init.index);
dev_dbg(dev, "rxq_init.ring_base 0x%llx\n", ctx.cmd.q_init.ring_base);
dev_dbg(dev, "rxq_init.ring_size %d\n", ctx.cmd.q_init.ring_size);
dev_dbg(dev, "rxq_init.flags 0x%x\n", ctx.cmd.q_init.flags);
dev_dbg(dev, "rxq_init.ver %d\n", ctx.cmd.q_init.ver);
q->tail = q->info;
q->head = q->tail;
cq->tail = cq->info;
err = ionic_adminq_post_wait(lif, &ctx);
if (err)
return err;
q->hw_type = ctx.comp.q_init.hw_type;
q->hw_index = le32_to_cpu(ctx.comp.q_init.hw_index);
q->dbval = IONIC_DBELL_QID(q->hw_index);
dev_dbg(dev, "rxq->hw_type %d\n", q->hw_type);
dev_dbg(dev, "rxq->hw_index %d\n", q->hw_index);
netif_napi_add(lif->netdev, &qcq->napi, ionic_rx_napi,
NAPI_POLL_WEIGHT);
qcq->flags |= IONIC_QCQ_F_INITED;
return 0;
}
static bool ionic_notifyq_service(struct ionic_cq *cq,
struct ionic_cq_info *cq_info)
{
union ionic_notifyq_comp *comp = cq_info->cq_desc;
struct ionic_deferred_work *work;
struct net_device *netdev;
struct ionic_queue *q;
struct ionic_lif *lif;
u64 eid;
q = cq->bound_q;
lif = q->info[0].cb_arg;
netdev = lif->netdev;
eid = le64_to_cpu(comp->event.eid);
/* Have we run out of new completions to process? */
if (eid <= lif->last_eid)
return false;
lif->last_eid = eid;
dev_dbg(lif->ionic->dev, "notifyq event:\n");
dynamic_hex_dump("event ", DUMP_PREFIX_OFFSET, 16, 1,
comp, sizeof(*comp), true);
switch (le16_to_cpu(comp->event.ecode)) {
case IONIC_EVENT_LINK_CHANGE:
ionic_link_status_check_request(lif);
break;
case IONIC_EVENT_RESET:
work = kzalloc(sizeof(*work), GFP_ATOMIC);
if (!work) {
netdev_err(lif->netdev, "%s OOM\n", __func__);
} else {
work->type = IONIC_DW_TYPE_LIF_RESET;
ionic_lif_deferred_enqueue(&lif->deferred, work);
}
break;
default:
netdev_warn(netdev, "Notifyq event ecode=%d eid=%lld\n",
comp->event.ecode, eid);
break;
}
return true;
}
static int ionic_notifyq_clean(struct ionic_lif *lif, int budget)
{
struct ionic_dev *idev = &lif->ionic->idev;
struct ionic_cq *cq = &lif->notifyqcq->cq;
u32 work_done;
work_done = ionic_cq_service(cq, budget, ionic_notifyq_service,
NULL, NULL);
if (work_done)
ionic_intr_credits(idev->intr_ctrl, cq->bound_intr->index,
work_done, IONIC_INTR_CRED_RESET_COALESCE);
return work_done;
}
static bool ionic_adminq_service(struct ionic_cq *cq,
struct ionic_cq_info *cq_info)
{
struct ionic_admin_comp *comp = cq_info->cq_desc;
if (!color_match(comp->color, cq->done_color))
return false;
ionic_q_service(cq->bound_q, cq_info, le16_to_cpu(comp->comp_index));
return true;
}
static int ionic_adminq_napi(struct napi_struct *napi, int budget)
{
struct ionic_lif *lif = napi_to_cq(napi)->lif;
int n_work = 0;
int a_work = 0;
if (likely(lif->notifyqcq && lif->notifyqcq->flags & IONIC_QCQ_F_INITED))
n_work = ionic_notifyq_clean(lif, budget);
a_work = ionic_napi(napi, budget, ionic_adminq_service, NULL, NULL);
return max(n_work, a_work);
}
void ionic_get_stats64(struct net_device *netdev,
struct rtnl_link_stats64 *ns)
{
struct ionic_lif *lif = netdev_priv(netdev);
struct ionic_lif_stats *ls;
memset(ns, 0, sizeof(*ns));
ls = &lif->info->stats;
ns->rx_packets = le64_to_cpu(ls->rx_ucast_packets) +
le64_to_cpu(ls->rx_mcast_packets) +
le64_to_cpu(ls->rx_bcast_packets);
ns->tx_packets = le64_to_cpu(ls->tx_ucast_packets) +
le64_to_cpu(ls->tx_mcast_packets) +
le64_to_cpu(ls->tx_bcast_packets);
ns->rx_bytes = le64_to_cpu(ls->rx_ucast_bytes) +
le64_to_cpu(ls->rx_mcast_bytes) +
le64_to_cpu(ls->rx_bcast_bytes);
ns->tx_bytes = le64_to_cpu(ls->tx_ucast_bytes) +
le64_to_cpu(ls->tx_mcast_bytes) +
le64_to_cpu(ls->tx_bcast_bytes);
ns->rx_dropped = le64_to_cpu(ls->rx_ucast_drop_packets) +
le64_to_cpu(ls->rx_mcast_drop_packets) +
le64_to_cpu(ls->rx_bcast_drop_packets);
ns->tx_dropped = le64_to_cpu(ls->tx_ucast_drop_packets) +
le64_to_cpu(ls->tx_mcast_drop_packets) +
le64_to_cpu(ls->tx_bcast_drop_packets);
ns->multicast = le64_to_cpu(ls->rx_mcast_packets);
ns->rx_over_errors = le64_to_cpu(ls->rx_queue_empty);
ns->rx_missed_errors = le64_to_cpu(ls->rx_dma_error) +
le64_to_cpu(ls->rx_queue_disabled) +
le64_to_cpu(ls->rx_desc_fetch_error) +
le64_to_cpu(ls->rx_desc_data_error);
ns->tx_aborted_errors = le64_to_cpu(ls->tx_dma_error) +
le64_to_cpu(ls->tx_queue_disabled) +
le64_to_cpu(ls->tx_desc_fetch_error) +
le64_to_cpu(ls->tx_desc_data_error);
ns->rx_errors = ns->rx_over_errors +
ns->rx_missed_errors;
ns->tx_errors = ns->tx_aborted_errors;
}
static int ionic_lif_addr_add(struct ionic_lif *lif, const u8 *addr)
{
struct ionic_admin_ctx ctx = {
.work = COMPLETION_INITIALIZER_ONSTACK(ctx.work),
.cmd.rx_filter_add = {
.opcode = IONIC_CMD_RX_FILTER_ADD,
.lif_index = cpu_to_le16(lif->index),
.match = cpu_to_le16(IONIC_RX_FILTER_MATCH_MAC),
},
};
struct ionic_rx_filter *f;
int err;
/* don't bother if we already have it */
spin_lock_bh(&lif->rx_filters.lock);
f = ionic_rx_filter_by_addr(lif, addr);
spin_unlock_bh(&lif->rx_filters.lock);
if (f)
return 0;
netdev_dbg(lif->netdev, "rx_filter add ADDR %pM (id %d)\n", addr,
ctx.comp.rx_filter_add.filter_id);
memcpy(ctx.cmd.rx_filter_add.mac.addr, addr, ETH_ALEN);
err = ionic_adminq_post_wait(lif, &ctx);
if (err && err != -EEXIST)
return err;
return ionic_rx_filter_save(lif, 0, IONIC_RXQ_INDEX_ANY, 0, &ctx);
}
static int ionic_lif_addr_del(struct ionic_lif *lif, const u8 *addr)
{
struct ionic_admin_ctx ctx = {
.work = COMPLETION_INITIALIZER_ONSTACK(ctx.work),
.cmd.rx_filter_del = {
.opcode = IONIC_CMD_RX_FILTER_DEL,
.lif_index = cpu_to_le16(lif->index),
},
};
struct ionic_rx_filter *f;
int err;
spin_lock_bh(&lif->rx_filters.lock);
f = ionic_rx_filter_by_addr(lif, addr);
if (!f) {
spin_unlock_bh(&lif->rx_filters.lock);
return -ENOENT;
}
ctx.cmd.rx_filter_del.filter_id = cpu_to_le32(f->filter_id);
ionic_rx_filter_free(lif, f);
spin_unlock_bh(&lif->rx_filters.lock);
err = ionic_adminq_post_wait(lif, &ctx);
if (err && err != -EEXIST)
return err;
netdev_dbg(lif->netdev, "rx_filter del ADDR %pM (id %d)\n", addr,
ctx.cmd.rx_filter_del.filter_id);
return 0;
}
static int ionic_lif_addr(struct ionic_lif *lif, const u8 *addr, bool add)
{
struct ionic *ionic = lif->ionic;
struct ionic_deferred_work *work;
unsigned int nmfilters;
unsigned int nufilters;
if (add) {
/* Do we have space for this filter? We test the counters
* here before checking the need for deferral so that we
* can return an overflow error to the stack.
*/
nmfilters = le32_to_cpu(ionic->ident.lif.eth.max_mcast_filters);
nufilters = le32_to_cpu(ionic->ident.lif.eth.max_ucast_filters);
if ((is_multicast_ether_addr(addr) && lif->nmcast < nmfilters))
lif->nmcast++;
else if (!is_multicast_ether_addr(addr) &&
lif->nucast < nufilters)
lif->nucast++;
else
return -ENOSPC;
} else {
if (is_multicast_ether_addr(addr) && lif->nmcast)
lif->nmcast--;
else if (!is_multicast_ether_addr(addr) && lif->nucast)
lif->nucast--;
}
if (in_interrupt()) {
work = kzalloc(sizeof(*work), GFP_ATOMIC);
if (!work) {
netdev_err(lif->netdev, "%s OOM\n", __func__);
return -ENOMEM;
}
work->type = add ? IONIC_DW_TYPE_RX_ADDR_ADD :
IONIC_DW_TYPE_RX_ADDR_DEL;
memcpy(work->addr, addr, ETH_ALEN);
netdev_dbg(lif->netdev, "deferred: rx_filter %s %pM\n",
add ? "add" : "del", addr);
ionic_lif_deferred_enqueue(&lif->deferred, work);
} else {
netdev_dbg(lif->netdev, "rx_filter %s %pM\n",
add ? "add" : "del", addr);
if (add)
return ionic_lif_addr_add(lif, addr);
else
return ionic_lif_addr_del(lif, addr);
}
return 0;
}
static int ionic_addr_add(struct net_device *netdev, const u8 *addr)
{
return ionic_lif_addr(netdev_priv(netdev), addr, true);
}
static int ionic_addr_del(struct net_device *netdev, const u8 *addr)
{
return ionic_lif_addr(netdev_priv(netdev), addr, false);
}
static void ionic_lif_rx_mode(struct ionic_lif *lif, unsigned int rx_mode)
{
struct ionic_admin_ctx ctx = {
.work = COMPLETION_INITIALIZER_ONSTACK(ctx.work),
.cmd.rx_mode_set = {
.opcode = IONIC_CMD_RX_MODE_SET,
.lif_index = cpu_to_le16(lif->index),
.rx_mode = cpu_to_le16(rx_mode),
},
};
char buf[128];
int err;
int i;
#define REMAIN(__x) (sizeof(buf) - (__x))
i = scnprintf(buf, sizeof(buf), "rx_mode 0x%04x -> 0x%04x:",
lif->rx_mode, rx_mode);
if (rx_mode & IONIC_RX_MODE_F_UNICAST)
i += scnprintf(&buf[i], REMAIN(i), " RX_MODE_F_UNICAST");
if (rx_mode & IONIC_RX_MODE_F_MULTICAST)
i += scnprintf(&buf[i], REMAIN(i), " RX_MODE_F_MULTICAST");
if (rx_mode & IONIC_RX_MODE_F_BROADCAST)
i += scnprintf(&buf[i], REMAIN(i), " RX_MODE_F_BROADCAST");
if (rx_mode & IONIC_RX_MODE_F_PROMISC)
i += scnprintf(&buf[i], REMAIN(i), " RX_MODE_F_PROMISC");
if (rx_mode & IONIC_RX_MODE_F_ALLMULTI)
i += scnprintf(&buf[i], REMAIN(i), " RX_MODE_F_ALLMULTI");
netdev_dbg(lif->netdev, "lif%d %s\n", lif->index, buf);
err = ionic_adminq_post_wait(lif, &ctx);
if (err)
netdev_warn(lif->netdev, "set rx_mode 0x%04x failed: %d\n",
rx_mode, err);
else
lif->rx_mode = rx_mode;
}
static void _ionic_lif_rx_mode(struct ionic_lif *lif, unsigned int rx_mode)
{
struct ionic_deferred_work *work;
if (in_interrupt()) {
work = kzalloc(sizeof(*work), GFP_ATOMIC);
if (!work) {
netdev_err(lif->netdev, "%s OOM\n", __func__);
return;
}
work->type = IONIC_DW_TYPE_RX_MODE;
work->rx_mode = rx_mode;
netdev_dbg(lif->netdev, "deferred: rx_mode\n");
ionic_lif_deferred_enqueue(&lif->deferred, work);
} else {
ionic_lif_rx_mode(lif, rx_mode);
}
}
static void ionic_set_rx_mode(struct net_device *netdev)
{
struct ionic_lif *lif = netdev_priv(netdev);
struct ionic_identity *ident;
unsigned int nfilters;
unsigned int rx_mode;
ident = &lif->ionic->ident;
rx_mode = IONIC_RX_MODE_F_UNICAST;
rx_mode |= (netdev->flags & IFF_MULTICAST) ? IONIC_RX_MODE_F_MULTICAST : 0;
rx_mode |= (netdev->flags & IFF_BROADCAST) ? IONIC_RX_MODE_F_BROADCAST : 0;
rx_mode |= (netdev->flags & IFF_PROMISC) ? IONIC_RX_MODE_F_PROMISC : 0;
rx_mode |= (netdev->flags & IFF_ALLMULTI) ? IONIC_RX_MODE_F_ALLMULTI : 0;
/* sync unicast addresses
* next check to see if we're in an overflow state
* if so, we track that we overflowed and enable NIC PROMISC
* else if the overflow is set and not needed
* we remove our overflow flag and check the netdev flags
* to see if we can disable NIC PROMISC
*/
__dev_uc_sync(netdev, ionic_addr_add, ionic_addr_del);
nfilters = le32_to_cpu(ident->lif.eth.max_ucast_filters);
if (netdev_uc_count(netdev) + 1 > nfilters) {
rx_mode |= IONIC_RX_MODE_F_PROMISC;
lif->uc_overflow = true;
} else if (lif->uc_overflow) {
lif->uc_overflow = false;
if (!(netdev->flags & IFF_PROMISC))
rx_mode &= ~IONIC_RX_MODE_F_PROMISC;
}
/* same for multicast */
__dev_mc_sync(netdev, ionic_addr_add, ionic_addr_del);
nfilters = le32_to_cpu(ident->lif.eth.max_mcast_filters);
if (netdev_mc_count(netdev) > nfilters) {
rx_mode |= IONIC_RX_MODE_F_ALLMULTI;
lif->mc_overflow = true;
} else if (lif->mc_overflow) {
lif->mc_overflow = false;
if (!(netdev->flags & IFF_ALLMULTI))
rx_mode &= ~IONIC_RX_MODE_F_ALLMULTI;
}
if (lif->rx_mode != rx_mode)
_ionic_lif_rx_mode(lif, rx_mode);
}
static __le64 ionic_netdev_features_to_nic(netdev_features_t features)
{
u64 wanted = 0;
if (features & NETIF_F_HW_VLAN_CTAG_TX)
wanted |= IONIC_ETH_HW_VLAN_TX_TAG;
if (features & NETIF_F_HW_VLAN_CTAG_RX)
wanted |= IONIC_ETH_HW_VLAN_RX_STRIP;
if (features & NETIF_F_HW_VLAN_CTAG_FILTER)
wanted |= IONIC_ETH_HW_VLAN_RX_FILTER;
if (features & NETIF_F_RXHASH)
wanted |= IONIC_ETH_HW_RX_HASH;
if (features & NETIF_F_RXCSUM)
wanted |= IONIC_ETH_HW_RX_CSUM;
if (features & NETIF_F_SG)
wanted |= IONIC_ETH_HW_TX_SG;
if (features & NETIF_F_HW_CSUM)
wanted |= IONIC_ETH_HW_TX_CSUM;
if (features & NETIF_F_TSO)
wanted |= IONIC_ETH_HW_TSO;
if (features & NETIF_F_TSO6)
wanted |= IONIC_ETH_HW_TSO_IPV6;
if (features & NETIF_F_TSO_ECN)
wanted |= IONIC_ETH_HW_TSO_ECN;
if (features & NETIF_F_GSO_GRE)
wanted |= IONIC_ETH_HW_TSO_GRE;
if (features & NETIF_F_GSO_GRE_CSUM)
wanted |= IONIC_ETH_HW_TSO_GRE_CSUM;
if (features & NETIF_F_GSO_IPXIP4)
wanted |= IONIC_ETH_HW_TSO_IPXIP4;
if (features & NETIF_F_GSO_IPXIP6)
wanted |= IONIC_ETH_HW_TSO_IPXIP6;
if (features & NETIF_F_GSO_UDP_TUNNEL)
wanted |= IONIC_ETH_HW_TSO_UDP;
if (features & NETIF_F_GSO_UDP_TUNNEL_CSUM)
wanted |= IONIC_ETH_HW_TSO_UDP_CSUM;
return cpu_to_le64(wanted);
}
static int ionic_set_nic_features(struct ionic_lif *lif,
netdev_features_t features)
{
struct device *dev = lif->ionic->dev;
struct ionic_admin_ctx ctx = {
.work = COMPLETION_INITIALIZER_ONSTACK(ctx.work),
.cmd.lif_setattr = {
.opcode = IONIC_CMD_LIF_SETATTR,
.index = cpu_to_le16(lif->index),
.attr = IONIC_LIF_ATTR_FEATURES,
},
};
u64 vlan_flags = IONIC_ETH_HW_VLAN_TX_TAG |
IONIC_ETH_HW_VLAN_RX_STRIP |
IONIC_ETH_HW_VLAN_RX_FILTER;
u64 old_hw_features;
int err;
ctx.cmd.lif_setattr.features = ionic_netdev_features_to_nic(features);
err = ionic_adminq_post_wait(lif, &ctx);
if (err)
return err;
old_hw_features = lif->hw_features;
lif->hw_features = le64_to_cpu(ctx.cmd.lif_setattr.features &
ctx.comp.lif_setattr.features);
if ((old_hw_features ^ lif->hw_features) & IONIC_ETH_HW_RX_HASH)
ionic_lif_rss_config(lif, lif->rss_types, NULL, NULL);
if ((vlan_flags & features) &&
!(vlan_flags & le64_to_cpu(ctx.comp.lif_setattr.features)))
dev_info_once(lif->ionic->dev, "NIC is not supporting vlan offload, likely in SmartNIC mode\n");
if (lif->hw_features & IONIC_ETH_HW_VLAN_TX_TAG)
dev_dbg(dev, "feature ETH_HW_VLAN_TX_TAG\n");
if (lif->hw_features & IONIC_ETH_HW_VLAN_RX_STRIP)
dev_dbg(dev, "feature ETH_HW_VLAN_RX_STRIP\n");
if (lif->hw_features & IONIC_ETH_HW_VLAN_RX_FILTER)
dev_dbg(dev, "feature ETH_HW_VLAN_RX_FILTER\n");
if (lif->hw_features & IONIC_ETH_HW_RX_HASH)
dev_dbg(dev, "feature ETH_HW_RX_HASH\n");
if (lif->hw_features & IONIC_ETH_HW_TX_SG)
dev_dbg(dev, "feature ETH_HW_TX_SG\n");
if (lif->hw_features & IONIC_ETH_HW_TX_CSUM)
dev_dbg(dev, "feature ETH_HW_TX_CSUM\n");
if (lif->hw_features & IONIC_ETH_HW_RX_CSUM)
dev_dbg(dev, "feature ETH_HW_RX_CSUM\n");
if (lif->hw_features & IONIC_ETH_HW_TSO)
dev_dbg(dev, "feature ETH_HW_TSO\n");
if (lif->hw_features & IONIC_ETH_HW_TSO_IPV6)
dev_dbg(dev, "feature ETH_HW_TSO_IPV6\n");
if (lif->hw_features & IONIC_ETH_HW_TSO_ECN)
dev_dbg(dev, "feature ETH_HW_TSO_ECN\n");
if (lif->hw_features & IONIC_ETH_HW_TSO_GRE)
dev_dbg(dev, "feature ETH_HW_TSO_GRE\n");
if (lif->hw_features & IONIC_ETH_HW_TSO_GRE_CSUM)
dev_dbg(dev, "feature ETH_HW_TSO_GRE_CSUM\n");
if (lif->hw_features & IONIC_ETH_HW_TSO_IPXIP4)
dev_dbg(dev, "feature ETH_HW_TSO_IPXIP4\n");
if (lif->hw_features & IONIC_ETH_HW_TSO_IPXIP6)
dev_dbg(dev, "feature ETH_HW_TSO_IPXIP6\n");
if (lif->hw_features & IONIC_ETH_HW_TSO_UDP)
dev_dbg(dev, "feature ETH_HW_TSO_UDP\n");
if (lif->hw_features & IONIC_ETH_HW_TSO_UDP_CSUM)
dev_dbg(dev, "feature ETH_HW_TSO_UDP_CSUM\n");
return 0;
}
static int ionic_init_nic_features(struct ionic_lif *lif)
{
struct net_device *netdev = lif->netdev;
netdev_features_t features;
int err;
/* set up what we expect to support by default */
features = NETIF_F_HW_VLAN_CTAG_TX |
NETIF_F_HW_VLAN_CTAG_RX |
NETIF_F_HW_VLAN_CTAG_FILTER |
NETIF_F_RXHASH |
NETIF_F_SG |
NETIF_F_HW_CSUM |
NETIF_F_RXCSUM |
NETIF_F_TSO |
NETIF_F_TSO6 |
NETIF_F_TSO_ECN;
err = ionic_set_nic_features(lif, features);
if (err)
return err;
/* tell the netdev what we actually can support */
netdev->features |= NETIF_F_HIGHDMA;
if (lif->hw_features & IONIC_ETH_HW_VLAN_TX_TAG)
netdev->hw_features |= NETIF_F_HW_VLAN_CTAG_TX;
if (lif->hw_features & IONIC_ETH_HW_VLAN_RX_STRIP)
netdev->hw_features |= NETIF_F_HW_VLAN_CTAG_RX;
if (lif->hw_features & IONIC_ETH_HW_VLAN_RX_FILTER)
netdev->hw_features |= NETIF_F_HW_VLAN_CTAG_FILTER;
if (lif->hw_features & IONIC_ETH_HW_RX_HASH)
netdev->hw_features |= NETIF_F_RXHASH;
if (lif->hw_features & IONIC_ETH_HW_TX_SG)
netdev->hw_features |= NETIF_F_SG;
if (lif->hw_features & IONIC_ETH_HW_TX_CSUM)
netdev->hw_enc_features |= NETIF_F_HW_CSUM;
if (lif->hw_features & IONIC_ETH_HW_RX_CSUM)
netdev->hw_enc_features |= NETIF_F_RXCSUM;
if (lif->hw_features & IONIC_ETH_HW_TSO)
netdev->hw_enc_features |= NETIF_F_TSO;
if (lif->hw_features & IONIC_ETH_HW_TSO_IPV6)
netdev->hw_enc_features |= NETIF_F_TSO6;
if (lif->hw_features & IONIC_ETH_HW_TSO_ECN)
netdev->hw_enc_features |= NETIF_F_TSO_ECN;
if (lif->hw_features & IONIC_ETH_HW_TSO_GRE)
netdev->hw_enc_features |= NETIF_F_GSO_GRE;
if (lif->hw_features & IONIC_ETH_HW_TSO_GRE_CSUM)
netdev->hw_enc_features |= NETIF_F_GSO_GRE_CSUM;
if (lif->hw_features & IONIC_ETH_HW_TSO_IPXIP4)
netdev->hw_enc_features |= NETIF_F_GSO_IPXIP4;
if (lif->hw_features & IONIC_ETH_HW_TSO_IPXIP6)
netdev->hw_enc_features |= NETIF_F_GSO_IPXIP6;
if (lif->hw_features & IONIC_ETH_HW_TSO_UDP)
netdev->hw_enc_features |= NETIF_F_GSO_UDP_TUNNEL;
if (lif->hw_features & IONIC_ETH_HW_TSO_UDP_CSUM)
netdev->hw_enc_features |= NETIF_F_GSO_UDP_TUNNEL_CSUM;
netdev->hw_features |= netdev->hw_enc_features;
netdev->features |= netdev->hw_features;
netdev->vlan_features |= netdev->features & ~NETIF_F_VLAN_FEATURES;
netdev->priv_flags |= IFF_UNICAST_FLT |
IFF_LIVE_ADDR_CHANGE;
return 0;
}
static int ionic_set_features(struct net_device *netdev,
netdev_features_t features)
{
struct ionic_lif *lif = netdev_priv(netdev);
int err;
netdev_dbg(netdev, "%s: lif->features=0x%08llx new_features=0x%08llx\n",
__func__, (u64)lif->netdev->features, (u64)features);
err = ionic_set_nic_features(lif, features);
return err;
}
static int ionic_set_mac_address(struct net_device *netdev, void *sa)
{
struct sockaddr *addr = sa;
u8 *mac;
int err;
mac = (u8 *)addr->sa_data;
if (ether_addr_equal(netdev->dev_addr, mac))
return 0;
err = eth_prepare_mac_addr_change(netdev, addr);
if (err)
return err;
if (!is_zero_ether_addr(netdev->dev_addr)) {
netdev_info(netdev, "deleting mac addr %pM\n",
netdev->dev_addr);
ionic_addr_del(netdev, netdev->dev_addr);
}
eth_commit_mac_addr_change(netdev, addr);
netdev_info(netdev, "updating mac addr %pM\n", mac);
return ionic_addr_add(netdev, mac);
}
static int ionic_change_mtu(struct net_device *netdev, int new_mtu)
{
struct ionic_lif *lif = netdev_priv(netdev);
struct ionic_admin_ctx ctx = {
.work = COMPLETION_INITIALIZER_ONSTACK(ctx.work),
.cmd.lif_setattr = {
.opcode = IONIC_CMD_LIF_SETATTR,
.index = cpu_to_le16(lif->index),
.attr = IONIC_LIF_ATTR_MTU,
.mtu = cpu_to_le32(new_mtu),
},
};
int err;
err = ionic_adminq_post_wait(lif, &ctx);
if (err)
return err;
netdev->mtu = new_mtu;
err = ionic_reset_queues(lif);
return err;
}
static void ionic_tx_timeout_work(struct work_struct *ws)
{
struct ionic_lif *lif = container_of(ws, struct ionic_lif, tx_timeout_work);
netdev_info(lif->netdev, "Tx Timeout recovery\n");
rtnl_lock();
ionic_reset_queues(lif);
rtnl_unlock();
}
static void ionic_tx_timeout(struct net_device *netdev, unsigned int txqueue)
{
struct ionic_lif *lif = netdev_priv(netdev);
schedule_work(&lif->tx_timeout_work);
}
static int ionic_vlan_rx_add_vid(struct net_device *netdev, __be16 proto,
u16 vid)
{
struct ionic_lif *lif = netdev_priv(netdev);
struct ionic_admin_ctx ctx = {
.work = COMPLETION_INITIALIZER_ONSTACK(ctx.work),
.cmd.rx_filter_add = {
.opcode = IONIC_CMD_RX_FILTER_ADD,
.lif_index = cpu_to_le16(lif->index),
.match = cpu_to_le16(IONIC_RX_FILTER_MATCH_VLAN),
.vlan.vlan = cpu_to_le16(vid),
},
};
int err;
err = ionic_adminq_post_wait(lif, &ctx);
if (err)
return err;
netdev_dbg(netdev, "rx_filter add VLAN %d (id %d)\n", vid,
ctx.comp.rx_filter_add.filter_id);
return ionic_rx_filter_save(lif, 0, IONIC_RXQ_INDEX_ANY, 0, &ctx);
}
static int ionic_vlan_rx_kill_vid(struct net_device *netdev, __be16 proto,
u16 vid)
{
struct ionic_lif *lif = netdev_priv(netdev);
struct ionic_admin_ctx ctx = {
.work = COMPLETION_INITIALIZER_ONSTACK(ctx.work),
.cmd.rx_filter_del = {
.opcode = IONIC_CMD_RX_FILTER_DEL,
.lif_index = cpu_to_le16(lif->index),
},
};
struct ionic_rx_filter *f;
spin_lock_bh(&lif->rx_filters.lock);
f = ionic_rx_filter_by_vlan(lif, vid);
if (!f) {
spin_unlock_bh(&lif->rx_filters.lock);
return -ENOENT;
}
netdev_dbg(netdev, "rx_filter del VLAN %d (id %d)\n", vid,
le32_to_cpu(ctx.cmd.rx_filter_del.filter_id));
ctx.cmd.rx_filter_del.filter_id = cpu_to_le32(f->filter_id);
ionic_rx_filter_free(lif, f);
spin_unlock_bh(&lif->rx_filters.lock);
return ionic_adminq_post_wait(lif, &ctx);
}
int ionic_lif_rss_config(struct ionic_lif *lif, const u16 types,
const u8 *key, const u32 *indir)
{
struct ionic_admin_ctx ctx = {
.work = COMPLETION_INITIALIZER_ONSTACK(ctx.work),
.cmd.lif_setattr = {
.opcode = IONIC_CMD_LIF_SETATTR,
.attr = IONIC_LIF_ATTR_RSS,
.rss.addr = cpu_to_le64(lif->rss_ind_tbl_pa),
},
};
unsigned int i, tbl_sz;
if (lif->hw_features & IONIC_ETH_HW_RX_HASH) {
lif->rss_types = types;
ctx.cmd.lif_setattr.rss.types = cpu_to_le16(types);
}
if (key)
memcpy(lif->rss_hash_key, key, IONIC_RSS_HASH_KEY_SIZE);
if (indir) {
tbl_sz = le16_to_cpu(lif->ionic->ident.lif.eth.rss_ind_tbl_sz);
for (i = 0; i < tbl_sz; i++)
lif->rss_ind_tbl[i] = indir[i];
}
memcpy(ctx.cmd.lif_setattr.rss.key, lif->rss_hash_key,
IONIC_RSS_HASH_KEY_SIZE);
return ionic_adminq_post_wait(lif, &ctx);
}
static int ionic_lif_rss_init(struct ionic_lif *lif)
{
unsigned int tbl_sz;
unsigned int i;
lif->rss_types = IONIC_RSS_TYPE_IPV4 |
IONIC_RSS_TYPE_IPV4_TCP |
IONIC_RSS_TYPE_IPV4_UDP |
IONIC_RSS_TYPE_IPV6 |
IONIC_RSS_TYPE_IPV6_TCP |
IONIC_RSS_TYPE_IPV6_UDP;
/* Fill indirection table with 'default' values */
tbl_sz = le16_to_cpu(lif->ionic->ident.lif.eth.rss_ind_tbl_sz);
for (i = 0; i < tbl_sz; i++)
lif->rss_ind_tbl[i] = ethtool_rxfh_indir_default(i, lif->nxqs);
return ionic_lif_rss_config(lif, lif->rss_types, NULL, NULL);
}
static void ionic_lif_rss_deinit(struct ionic_lif *lif)
{
int tbl_sz;
tbl_sz = le16_to_cpu(lif->ionic->ident.lif.eth.rss_ind_tbl_sz);
memset(lif->rss_ind_tbl, 0, tbl_sz);
memset(lif->rss_hash_key, 0, IONIC_RSS_HASH_KEY_SIZE);
ionic_lif_rss_config(lif, 0x0, NULL, NULL);
}
static void ionic_txrx_disable(struct ionic_lif *lif)
{
unsigned int i;
int err;
if (lif->txqcqs) {
for (i = 0; i < lif->nxqs; i++) {
err = ionic_qcq_disable(lif->txqcqs[i].qcq);
if (err == -ETIMEDOUT)
break;
}
}
if (lif->rxqcqs) {
for (i = 0; i < lif->nxqs; i++) {
err = ionic_qcq_disable(lif->rxqcqs[i].qcq);
if (err == -ETIMEDOUT)
break;
}
}
}
static void ionic_txrx_deinit(struct ionic_lif *lif)
{
unsigned int i;
if (lif->txqcqs) {
for (i = 0; i < lif->nxqs; i++) {
ionic_lif_qcq_deinit(lif, lif->txqcqs[i].qcq);
ionic_tx_flush(&lif->txqcqs[i].qcq->cq);
ionic_tx_empty(&lif->txqcqs[i].qcq->q);
}
}
if (lif->rxqcqs) {
for (i = 0; i < lif->nxqs; i++) {
ionic_lif_qcq_deinit(lif, lif->rxqcqs[i].qcq);
ionic_rx_flush(&lif->rxqcqs[i].qcq->cq);
ionic_rx_empty(&lif->rxqcqs[i].qcq->q);
}
}
lif->rx_mode = 0;
}
static void ionic_txrx_free(struct ionic_lif *lif)
{
unsigned int i;
if (lif->txqcqs) {
for (i = 0; i < lif->nxqs; i++) {
ionic_qcq_free(lif, lif->txqcqs[i].qcq);
lif->txqcqs[i].qcq = NULL;
}
}
if (lif->rxqcqs) {
for (i = 0; i < lif->nxqs; i++) {
ionic_qcq_free(lif, lif->rxqcqs[i].qcq);
lif->rxqcqs[i].qcq = NULL;
}
}
}
static int ionic_txrx_alloc(struct ionic_lif *lif)
{
unsigned int sg_desc_sz;
unsigned int flags;
unsigned int i;
int err = 0;
if (lif->qtype_info[IONIC_QTYPE_TXQ].version >= 1 &&
lif->qtype_info[IONIC_QTYPE_TXQ].sg_desc_sz ==
sizeof(struct ionic_txq_sg_desc_v1))
sg_desc_sz = sizeof(struct ionic_txq_sg_desc_v1);
else
sg_desc_sz = sizeof(struct ionic_txq_sg_desc);
flags = IONIC_QCQ_F_TX_STATS | IONIC_QCQ_F_SG;
for (i = 0; i < lif->nxqs; i++) {
err = ionic_qcq_alloc(lif, IONIC_QTYPE_TXQ, i, "tx", flags,
lif->ntxq_descs,
sizeof(struct ionic_txq_desc),
sizeof(struct ionic_txq_comp),
sg_desc_sz,
lif->kern_pid, &lif->txqcqs[i].qcq);
if (err)
goto err_out;
lif->txqcqs[i].qcq->stats = lif->txqcqs[i].stats;
ionic_debugfs_add_qcq(lif, lif->txqcqs[i].qcq);
}
flags = IONIC_QCQ_F_RX_STATS | IONIC_QCQ_F_SG | IONIC_QCQ_F_INTR;
for (i = 0; i < lif->nxqs; i++) {
err = ionic_qcq_alloc(lif, IONIC_QTYPE_RXQ, i, "rx", flags,
lif->nrxq_descs,
sizeof(struct ionic_rxq_desc),
sizeof(struct ionic_rxq_comp),
sizeof(struct ionic_rxq_sg_desc),
lif->kern_pid, &lif->rxqcqs[i].qcq);
if (err)
goto err_out;
lif->rxqcqs[i].qcq->stats = lif->rxqcqs[i].stats;
ionic_intr_coal_init(lif->ionic->idev.intr_ctrl,
lif->rxqcqs[i].qcq->intr.index,
lif->rx_coalesce_hw);
ionic_link_qcq_interrupts(lif->rxqcqs[i].qcq,
lif->txqcqs[i].qcq);
ionic_debugfs_add_qcq(lif, lif->rxqcqs[i].qcq);
}
return 0;
err_out:
ionic_txrx_free(lif);
return err;
}
static int ionic_txrx_init(struct ionic_lif *lif)
{
unsigned int i;
int err;
for (i = 0; i < lif->nxqs; i++) {
err = ionic_lif_txq_init(lif, lif->txqcqs[i].qcq);
if (err)
goto err_out;
err = ionic_lif_rxq_init(lif, lif->rxqcqs[i].qcq);
if (err) {
ionic_lif_qcq_deinit(lif, lif->txqcqs[i].qcq);
goto err_out;
}
}
if (lif->netdev->features & NETIF_F_RXHASH)
ionic_lif_rss_init(lif);
ionic_set_rx_mode(lif->netdev);
return 0;
err_out:
while (i--) {
ionic_lif_qcq_deinit(lif, lif->txqcqs[i].qcq);
ionic_lif_qcq_deinit(lif, lif->rxqcqs[i].qcq);
}
return err;
}
static int ionic_txrx_enable(struct ionic_lif *lif)
{
int i, err;
for (i = 0; i < lif->nxqs; i++) {
ionic_rx_fill(&lif->rxqcqs[i].qcq->q);
err = ionic_qcq_enable(lif->rxqcqs[i].qcq);
if (err)
goto err_out;
err = ionic_qcq_enable(lif->txqcqs[i].qcq);
if (err) {
if (err != -ETIMEDOUT)
ionic_qcq_disable(lif->rxqcqs[i].qcq);
goto err_out;
}
}
return 0;
err_out:
while (i--) {
err = ionic_qcq_disable(lif->txqcqs[i].qcq);
if (err == -ETIMEDOUT)
break;
err = ionic_qcq_disable(lif->rxqcqs[i].qcq);
if (err == -ETIMEDOUT)
break;
}
return err;
}
static int ionic_start_queues(struct ionic_lif *lif)
{
int err;
if (test_and_set_bit(IONIC_LIF_F_UP, lif->state))
return 0;
err = ionic_txrx_enable(lif);
if (err) {
clear_bit(IONIC_LIF_F_UP, lif->state);
return err;
}
netif_tx_wake_all_queues(lif->netdev);
return 0;
}
int ionic_open(struct net_device *netdev)
{
struct ionic_lif *lif = netdev_priv(netdev);
int err;
err = ionic_txrx_alloc(lif);
if (err)
return err;
err = ionic_txrx_init(lif);
if (err)
goto err_out;
/* don't start the queues until we have link */
if (netif_carrier_ok(netdev)) {
err = ionic_start_queues(lif);
if (err)
goto err_txrx_deinit;
}
return 0;
err_txrx_deinit:
ionic_txrx_deinit(lif);
err_out:
ionic_txrx_free(lif);
return err;
}
static void ionic_stop_queues(struct ionic_lif *lif)
{
if (!test_and_clear_bit(IONIC_LIF_F_UP, lif->state))
return;
netif_tx_disable(lif->netdev);
ionic_txrx_disable(lif);
}
int ionic_stop(struct net_device *netdev)
{
struct ionic_lif *lif = netdev_priv(netdev);
if (test_bit(IONIC_LIF_F_FW_RESET, lif->state))
return 0;
ionic_stop_queues(lif);
ionic_txrx_deinit(lif);
ionic_txrx_free(lif);
return 0;
}
static int ionic_get_vf_config(struct net_device *netdev,
int vf, struct ifla_vf_info *ivf)
{
struct ionic_lif *lif = netdev_priv(netdev);
struct ionic *ionic = lif->ionic;
int ret = 0;
if (!netif_device_present(netdev))
return -EBUSY;
down_read(&ionic->vf_op_lock);
if (vf >= pci_num_vf(ionic->pdev) || !ionic->vfs) {
ret = -EINVAL;
} else {
ivf->vf = vf;
ivf->vlan = ionic->vfs[vf].vlanid;
ivf->qos = 0;
ivf->spoofchk = ionic->vfs[vf].spoofchk;
ivf->linkstate = ionic->vfs[vf].linkstate;
ivf->max_tx_rate = ionic->vfs[vf].maxrate;
ivf->trusted = ionic->vfs[vf].trusted;
ether_addr_copy(ivf->mac, ionic->vfs[vf].macaddr);
}
up_read(&ionic->vf_op_lock);
return ret;
}
static int ionic_get_vf_stats(struct net_device *netdev, int vf,
struct ifla_vf_stats *vf_stats)
{
struct ionic_lif *lif = netdev_priv(netdev);
struct ionic *ionic = lif->ionic;
struct ionic_lif_stats *vs;
int ret = 0;
if (!netif_device_present(netdev))
return -EBUSY;
down_read(&ionic->vf_op_lock);
if (vf >= pci_num_vf(ionic->pdev) || !ionic->vfs) {
ret = -EINVAL;
} else {
memset(vf_stats, 0, sizeof(*vf_stats));
vs = &ionic->vfs[vf].stats;
vf_stats->rx_packets = le64_to_cpu(vs->rx_ucast_packets);
vf_stats->tx_packets = le64_to_cpu(vs->tx_ucast_packets);
vf_stats->rx_bytes = le64_to_cpu(vs->rx_ucast_bytes);
vf_stats->tx_bytes = le64_to_cpu(vs->tx_ucast_bytes);
vf_stats->broadcast = le64_to_cpu(vs->rx_bcast_packets);
vf_stats->multicast = le64_to_cpu(vs->rx_mcast_packets);
vf_stats->rx_dropped = le64_to_cpu(vs->rx_ucast_drop_packets) +
le64_to_cpu(vs->rx_mcast_drop_packets) +
le64_to_cpu(vs->rx_bcast_drop_packets);
vf_stats->tx_dropped = le64_to_cpu(vs->tx_ucast_drop_packets) +
le64_to_cpu(vs->tx_mcast_drop_packets) +
le64_to_cpu(vs->tx_bcast_drop_packets);
}
up_read(&ionic->vf_op_lock);
return ret;
}
static int ionic_set_vf_mac(struct net_device *netdev, int vf, u8 *mac)
{
struct ionic_lif *lif = netdev_priv(netdev);
struct ionic *ionic = lif->ionic;
int ret;
if (!(is_zero_ether_addr(mac) || is_valid_ether_addr(mac)))
return -EINVAL;
if (!netif_device_present(netdev))
return -EBUSY;
down_write(&ionic->vf_op_lock);
if (vf >= pci_num_vf(ionic->pdev) || !ionic->vfs) {
ret = -EINVAL;
} else {
ret = ionic_set_vf_config(ionic, vf, IONIC_VF_ATTR_MAC, mac);
if (!ret)
ether_addr_copy(ionic->vfs[vf].macaddr, mac);
}
up_write(&ionic->vf_op_lock);
return ret;
}
static int ionic_set_vf_vlan(struct net_device *netdev, int vf, u16 vlan,
u8 qos, __be16 proto)
{
struct ionic_lif *lif = netdev_priv(netdev);
struct ionic *ionic = lif->ionic;
int ret;
/* until someday when we support qos */
if (qos)
return -EINVAL;
if (vlan > 4095)
return -EINVAL;
if (proto != htons(ETH_P_8021Q))
return -EPROTONOSUPPORT;
if (!netif_device_present(netdev))
return -EBUSY;
down_write(&ionic->vf_op_lock);
if (vf >= pci_num_vf(ionic->pdev) || !ionic->vfs) {
ret = -EINVAL;
} else {
ret = ionic_set_vf_config(ionic, vf,
IONIC_VF_ATTR_VLAN, (u8 *)&vlan);
if (!ret)
ionic->vfs[vf].vlanid = vlan;
}
up_write(&ionic->vf_op_lock);
return ret;
}
static int ionic_set_vf_rate(struct net_device *netdev, int vf,
int tx_min, int tx_max)
{
struct ionic_lif *lif = netdev_priv(netdev);
struct ionic *ionic = lif->ionic;
int ret;
/* setting the min just seems silly */
if (tx_min)
return -EINVAL;
if (!netif_device_present(netdev))
return -EBUSY;
down_write(&ionic->vf_op_lock);
if (vf >= pci_num_vf(ionic->pdev) || !ionic->vfs) {
ret = -EINVAL;
} else {
ret = ionic_set_vf_config(ionic, vf,
IONIC_VF_ATTR_RATE, (u8 *)&tx_max);
if (!ret)
lif->ionic->vfs[vf].maxrate = tx_max;
}
up_write(&ionic->vf_op_lock);
return ret;
}
static int ionic_set_vf_spoofchk(struct net_device *netdev, int vf, bool set)
{
struct ionic_lif *lif = netdev_priv(netdev);
struct ionic *ionic = lif->ionic;
u8 data = set; /* convert to u8 for config */
int ret;
if (!netif_device_present(netdev))
return -EBUSY;
down_write(&ionic->vf_op_lock);
if (vf >= pci_num_vf(ionic->pdev) || !ionic->vfs) {
ret = -EINVAL;
} else {
ret = ionic_set_vf_config(ionic, vf,
IONIC_VF_ATTR_SPOOFCHK, &data);
if (!ret)
ionic->vfs[vf].spoofchk = data;
}
up_write(&ionic->vf_op_lock);
return ret;
}
static int ionic_set_vf_trust(struct net_device *netdev, int vf, bool set)
{
struct ionic_lif *lif = netdev_priv(netdev);
struct ionic *ionic = lif->ionic;
u8 data = set; /* convert to u8 for config */
int ret;
if (!netif_device_present(netdev))
return -EBUSY;
down_write(&ionic->vf_op_lock);
if (vf >= pci_num_vf(ionic->pdev) || !ionic->vfs) {
ret = -EINVAL;
} else {
ret = ionic_set_vf_config(ionic, vf,
IONIC_VF_ATTR_TRUST, &data);
if (!ret)
ionic->vfs[vf].trusted = data;
}
up_write(&ionic->vf_op_lock);
return ret;
}
static int ionic_set_vf_link_state(struct net_device *netdev, int vf, int set)
{
struct ionic_lif *lif = netdev_priv(netdev);
struct ionic *ionic = lif->ionic;
u8 data;
int ret;
switch (set) {
case IFLA_VF_LINK_STATE_ENABLE:
data = IONIC_VF_LINK_STATUS_UP;
break;
case IFLA_VF_LINK_STATE_DISABLE:
data = IONIC_VF_LINK_STATUS_DOWN;
break;
case IFLA_VF_LINK_STATE_AUTO:
data = IONIC_VF_LINK_STATUS_AUTO;
break;
default:
return -EINVAL;
}
if (!netif_device_present(netdev))
return -EBUSY;
down_write(&ionic->vf_op_lock);
if (vf >= pci_num_vf(ionic->pdev) || !ionic->vfs) {
ret = -EINVAL;
} else {
ret = ionic_set_vf_config(ionic, vf,
IONIC_VF_ATTR_LINKSTATE, &data);
if (!ret)
ionic->vfs[vf].linkstate = set;
}
up_write(&ionic->vf_op_lock);
return ret;
}
static const struct net_device_ops ionic_netdev_ops = {
.ndo_open = ionic_open,
.ndo_stop = ionic_stop,
.ndo_start_xmit = ionic_start_xmit,
.ndo_get_stats64 = ionic_get_stats64,
.ndo_set_rx_mode = ionic_set_rx_mode,
.ndo_set_features = ionic_set_features,
.ndo_set_mac_address = ionic_set_mac_address,
.ndo_validate_addr = eth_validate_addr,
.ndo_tx_timeout = ionic_tx_timeout,
.ndo_change_mtu = ionic_change_mtu,
.ndo_vlan_rx_add_vid = ionic_vlan_rx_add_vid,
.ndo_vlan_rx_kill_vid = ionic_vlan_rx_kill_vid,
.ndo_set_vf_vlan = ionic_set_vf_vlan,
.ndo_set_vf_trust = ionic_set_vf_trust,
.ndo_set_vf_mac = ionic_set_vf_mac,
.ndo_set_vf_rate = ionic_set_vf_rate,
.ndo_set_vf_spoofchk = ionic_set_vf_spoofchk,
.ndo_get_vf_config = ionic_get_vf_config,
.ndo_set_vf_link_state = ionic_set_vf_link_state,
.ndo_get_vf_stats = ionic_get_vf_stats,
};
int ionic_reset_queues(struct ionic_lif *lif)
{
bool running;
int err = 0;
err = ionic_wait_for_bit(lif, IONIC_LIF_F_QUEUE_RESET);
if (err)
return err;
running = netif_running(lif->netdev);
if (running) {
netif_device_detach(lif->netdev);
err = ionic_stop(lif->netdev);
}
if (!err && running) {
ionic_open(lif->netdev);
netif_device_attach(lif->netdev);
}
clear_bit(IONIC_LIF_F_QUEUE_RESET, lif->state);
return err;
}
static struct ionic_lif *ionic_lif_alloc(struct ionic *ionic, unsigned int index)
{
struct device *dev = ionic->dev;
struct net_device *netdev;
struct ionic_lif *lif;
int tbl_sz;
int err;
netdev = alloc_etherdev_mqs(sizeof(*lif),
ionic->ntxqs_per_lif, ionic->ntxqs_per_lif);
if (!netdev) {
dev_err(dev, "Cannot allocate netdev, aborting\n");
return ERR_PTR(-ENOMEM);
}
SET_NETDEV_DEV(netdev, dev);
lif = netdev_priv(netdev);
lif->netdev = netdev;
ionic->master_lif = lif;
netdev->netdev_ops = &ionic_netdev_ops;
ionic_ethtool_set_ops(netdev);
netdev->watchdog_timeo = 2 * HZ;
netif_carrier_off(netdev);
netdev->min_mtu = IONIC_MIN_MTU;
netdev->max_mtu = IONIC_MAX_MTU;
lif->neqs = ionic->neqs_per_lif;
lif->nxqs = ionic->ntxqs_per_lif;
lif->ionic = ionic;
lif->index = index;
lif->ntxq_descs = IONIC_DEF_TXRX_DESC;
lif->nrxq_descs = IONIC_DEF_TXRX_DESC;
/* Convert the default coalesce value to actual hw resolution */
lif->rx_coalesce_usecs = IONIC_ITR_COAL_USEC_DEFAULT;
lif->rx_coalesce_hw = ionic_coal_usec_to_hw(lif->ionic,
lif->rx_coalesce_usecs);
snprintf(lif->name, sizeof(lif->name), "lif%u", index);
spin_lock_init(&lif->adminq_lock);
spin_lock_init(&lif->deferred.lock);
INIT_LIST_HEAD(&lif->deferred.list);
INIT_WORK(&lif->deferred.work, ionic_lif_deferred_work);
/* allocate lif info */
lif->info_sz = ALIGN(sizeof(*lif->info), PAGE_SIZE);
lif->info = dma_alloc_coherent(dev, lif->info_sz,
&lif->info_pa, GFP_KERNEL);
if (!lif->info) {
dev_err(dev, "Failed to allocate lif info, aborting\n");
err = -ENOMEM;
goto err_out_free_netdev;
}
ionic_debugfs_add_lif(lif);
/* allocate queues */
err = ionic_qcqs_alloc(lif);
if (err)
goto err_out_free_lif_info;
/* allocate rss indirection table */
tbl_sz = le16_to_cpu(lif->ionic->ident.lif.eth.rss_ind_tbl_sz);
lif->rss_ind_tbl_sz = sizeof(*lif->rss_ind_tbl) * tbl_sz;
lif->rss_ind_tbl = dma_alloc_coherent(dev, lif->rss_ind_tbl_sz,
&lif->rss_ind_tbl_pa,
GFP_KERNEL);
if (!lif->rss_ind_tbl) {
err = -ENOMEM;
dev_err(dev, "Failed to allocate rss indirection table, aborting\n");
goto err_out_free_qcqs;
}
netdev_rss_key_fill(lif->rss_hash_key, IONIC_RSS_HASH_KEY_SIZE);
list_add_tail(&lif->list, &ionic->lifs);
return lif;
err_out_free_qcqs:
ionic_qcqs_free(lif);
err_out_free_lif_info:
dma_free_coherent(dev, lif->info_sz, lif->info, lif->info_pa);
lif->info = NULL;
lif->info_pa = 0;
err_out_free_netdev:
free_netdev(lif->netdev);
lif = NULL;
return ERR_PTR(err);
}
int ionic_lifs_alloc(struct ionic *ionic)
{
struct ionic_lif *lif;
INIT_LIST_HEAD(&ionic->lifs);
/* only build the first lif, others are for later features */
set_bit(0, ionic->lifbits);
lif = ionic_lif_alloc(ionic, 0);
if (IS_ERR_OR_NULL(lif)) {
clear_bit(0, ionic->lifbits);
return -ENOMEM;
}
lif->lif_type = IONIC_LIF_TYPE_CLASSIC;
ionic_lif_queue_identify(lif);
return 0;
}
static void ionic_lif_reset(struct ionic_lif *lif)
{
struct ionic_dev *idev = &lif->ionic->idev;
mutex_lock(&lif->ionic->dev_cmd_lock);
ionic_dev_cmd_lif_reset(idev, lif->index);
ionic_dev_cmd_wait(lif->ionic, DEVCMD_TIMEOUT);
mutex_unlock(&lif->ionic->dev_cmd_lock);
}
static void ionic_lif_handle_fw_down(struct ionic_lif *lif)
{
struct ionic *ionic = lif->ionic;
if (test_and_set_bit(IONIC_LIF_F_FW_RESET, lif->state))
return;
dev_info(ionic->dev, "FW Down: Stopping LIFs\n");
netif_device_detach(lif->netdev);
if (test_bit(IONIC_LIF_F_UP, lif->state)) {
dev_info(ionic->dev, "Surprise FW stop, stopping queues\n");
ionic_stop_queues(lif);
}
if (netif_running(lif->netdev)) {
ionic_txrx_deinit(lif);
ionic_txrx_free(lif);
}
ionic_lifs_deinit(ionic);
ionic_reset(ionic);
ionic_qcqs_free(lif);
dev_info(ionic->dev, "FW Down: LIFs stopped\n");
}
static void ionic_lif_handle_fw_up(struct ionic_lif *lif)
{
struct ionic *ionic = lif->ionic;
int err;
if (!test_bit(IONIC_LIF_F_FW_RESET, lif->state))
return;
dev_info(ionic->dev, "FW Up: restarting LIFs\n");
ionic_init_devinfo(ionic);
ionic_port_init(ionic);
err = ionic_qcqs_alloc(lif);
if (err)
goto err_out;
err = ionic_lifs_init(ionic);
if (err)
goto err_qcqs_free;
if (lif->registered)
ionic_lif_set_netdev_info(lif);
ionic_rx_filter_replay(lif);
if (netif_running(lif->netdev)) {
err = ionic_txrx_alloc(lif);
if (err)
goto err_lifs_deinit;
err = ionic_txrx_init(lif);
if (err)
goto err_txrx_free;
}
clear_bit(IONIC_LIF_F_FW_RESET, lif->state);
ionic_link_status_check_request(lif);
netif_device_attach(lif->netdev);
dev_info(ionic->dev, "FW Up: LIFs restarted\n");
return;
err_txrx_free:
ionic_txrx_free(lif);
err_lifs_deinit:
ionic_lifs_deinit(ionic);
err_qcqs_free:
ionic_qcqs_free(lif);
err_out:
dev_err(ionic->dev, "FW Up: LIFs restart failed - err %d\n", err);
}
static void ionic_lif_free(struct ionic_lif *lif)
{
struct device *dev = lif->ionic->dev;
/* free rss indirection table */
dma_free_coherent(dev, lif->rss_ind_tbl_sz, lif->rss_ind_tbl,
lif->rss_ind_tbl_pa);
lif->rss_ind_tbl = NULL;
lif->rss_ind_tbl_pa = 0;
/* free queues */
ionic_qcqs_free(lif);
if (!test_bit(IONIC_LIF_F_FW_RESET, lif->state))
ionic_lif_reset(lif);
/* free lif info */
dma_free_coherent(dev, lif->info_sz, lif->info, lif->info_pa);
lif->info = NULL;
lif->info_pa = 0;
/* unmap doorbell page */
ionic_bus_unmap_dbpage(lif->ionic, lif->kern_dbpage);
lif->kern_dbpage = NULL;
kfree(lif->dbid_inuse);
lif->dbid_inuse = NULL;
/* free netdev & lif */
ionic_debugfs_del_lif(lif);
list_del(&lif->list);
free_netdev(lif->netdev);
}
void ionic_lifs_free(struct ionic *ionic)
{
struct list_head *cur, *tmp;
struct ionic_lif *lif;
list_for_each_safe(cur, tmp, &ionic->lifs) {
lif = list_entry(cur, struct ionic_lif, list);
ionic_lif_free(lif);
}
}
static void ionic_lif_deinit(struct ionic_lif *lif)
{
if (!test_and_clear_bit(IONIC_LIF_F_INITED, lif->state))
return;
if (!test_bit(IONIC_LIF_F_FW_RESET, lif->state)) {
cancel_work_sync(&lif->deferred.work);
cancel_work_sync(&lif->tx_timeout_work);
ionic_rx_filters_deinit(lif);
}
if (lif->netdev->features & NETIF_F_RXHASH)
ionic_lif_rss_deinit(lif);
napi_disable(&lif->adminqcq->napi);
ionic_lif_qcq_deinit(lif, lif->notifyqcq);
ionic_lif_qcq_deinit(lif, lif->adminqcq);
ionic_lif_reset(lif);
}
void ionic_lifs_deinit(struct ionic *ionic)
{
struct list_head *cur, *tmp;
struct ionic_lif *lif;
list_for_each_safe(cur, tmp, &ionic->lifs) {
lif = list_entry(cur, struct ionic_lif, list);
ionic_lif_deinit(lif);
}
}
static int ionic_lif_adminq_init(struct ionic_lif *lif)
{
struct device *dev = lif->ionic->dev;
struct ionic_q_init_comp comp;
struct ionic_dev *idev;
struct ionic_qcq *qcq;
struct ionic_queue *q;
int err;
idev = &lif->ionic->idev;
qcq = lif->adminqcq;
q = &qcq->q;
mutex_lock(&lif->ionic->dev_cmd_lock);
ionic_dev_cmd_adminq_init(idev, qcq, lif->index, qcq->intr.index);
err = ionic_dev_cmd_wait(lif->ionic, DEVCMD_TIMEOUT);
ionic_dev_cmd_comp(idev, (union ionic_dev_cmd_comp *)&comp);
mutex_unlock(&lif->ionic->dev_cmd_lock);
if (err) {
netdev_err(lif->netdev, "adminq init failed %d\n", err);
return err;
}
q->hw_type = comp.hw_type;
q->hw_index = le32_to_cpu(comp.hw_index);
q->dbval = IONIC_DBELL_QID(q->hw_index);
dev_dbg(dev, "adminq->hw_type %d\n", q->hw_type);
dev_dbg(dev, "adminq->hw_index %d\n", q->hw_index);
netif_napi_add(lif->netdev, &qcq->napi, ionic_adminq_napi,
NAPI_POLL_WEIGHT);
napi_enable(&qcq->napi);
if (qcq->flags & IONIC_QCQ_F_INTR)
ionic_intr_mask(idev->intr_ctrl, qcq->intr.index,
IONIC_INTR_MASK_CLEAR);
qcq->flags |= IONIC_QCQ_F_INITED;
return 0;
}
static int ionic_lif_notifyq_init(struct ionic_lif *lif)
{
struct ionic_qcq *qcq = lif->notifyqcq;
struct device *dev = lif->ionic->dev;
struct ionic_queue *q = &qcq->q;
int err;
struct ionic_admin_ctx ctx = {
.work = COMPLETION_INITIALIZER_ONSTACK(ctx.work),
.cmd.q_init = {
.opcode = IONIC_CMD_Q_INIT,
.lif_index = cpu_to_le16(lif->index),
.type = q->type,
.ver = lif->qtype_info[q->type].version,
.index = cpu_to_le32(q->index),
.flags = cpu_to_le16(IONIC_QINIT_F_IRQ |
IONIC_QINIT_F_ENA),
.intr_index = cpu_to_le16(lif->adminqcq->intr.index),
.pid = cpu_to_le16(q->pid),
.ring_size = ilog2(q->num_descs),
.ring_base = cpu_to_le64(q->base_pa),
}
};
dev_dbg(dev, "notifyq_init.pid %d\n", ctx.cmd.q_init.pid);
dev_dbg(dev, "notifyq_init.index %d\n", ctx.cmd.q_init.index);
dev_dbg(dev, "notifyq_init.ring_base 0x%llx\n", ctx.cmd.q_init.ring_base);
dev_dbg(dev, "notifyq_init.ring_size %d\n", ctx.cmd.q_init.ring_size);
err = ionic_adminq_post_wait(lif, &ctx);
if (err)
return err;
lif->last_eid = 0;
q->hw_type = ctx.comp.q_init.hw_type;
q->hw_index = le32_to_cpu(ctx.comp.q_init.hw_index);
q->dbval = IONIC_DBELL_QID(q->hw_index);
dev_dbg(dev, "notifyq->hw_type %d\n", q->hw_type);
dev_dbg(dev, "notifyq->hw_index %d\n", q->hw_index);
/* preset the callback info */
q->info[0].cb_arg = lif;
qcq->flags |= IONIC_QCQ_F_INITED;
return 0;
}
static int ionic_station_set(struct ionic_lif *lif)
{
struct net_device *netdev = lif->netdev;
struct ionic_admin_ctx ctx = {
.work = COMPLETION_INITIALIZER_ONSTACK(ctx.work),
.cmd.lif_getattr = {
.opcode = IONIC_CMD_LIF_GETATTR,
.index = cpu_to_le16(lif->index),
.attr = IONIC_LIF_ATTR_MAC,
},
};
struct sockaddr addr;
int err;
err = ionic_adminq_post_wait(lif, &ctx);
if (err)
return err;
netdev_dbg(lif->netdev, "found initial MAC addr %pM\n",
ctx.comp.lif_getattr.mac);
if (is_zero_ether_addr(ctx.comp.lif_getattr.mac))
return 0;
if (!is_zero_ether_addr(netdev->dev_addr)) {
/* If the netdev mac is non-zero and doesn't match the default
* device address, it was set by something earlier and we're
* likely here again after a fw-upgrade reset. We need to be
* sure the netdev mac is in our filter list.
*/
if (!ether_addr_equal(ctx.comp.lif_getattr.mac,
netdev->dev_addr))
ionic_lif_addr(lif, netdev->dev_addr, true);
} else {
/* Update the netdev mac with the device's mac */
memcpy(addr.sa_data, ctx.comp.lif_getattr.mac, netdev->addr_len);
addr.sa_family = AF_INET;
err = eth_prepare_mac_addr_change(netdev, &addr);
if (err) {
netdev_warn(lif->netdev, "ignoring bad MAC addr from NIC %pM - err %d\n",
addr.sa_data, err);
return 0;
}
eth_commit_mac_addr_change(netdev, &addr);
}
netdev_dbg(lif->netdev, "adding station MAC addr %pM\n",
netdev->dev_addr);
ionic_lif_addr(lif, netdev->dev_addr, true);
return 0;
}
static int ionic_lif_init(struct ionic_lif *lif)
{
struct ionic_dev *idev = &lif->ionic->idev;
struct device *dev = lif->ionic->dev;
struct ionic_lif_init_comp comp;
int dbpage_num;
int err;
mutex_lock(&lif->ionic->dev_cmd_lock);
ionic_dev_cmd_lif_init(idev, lif->index, lif->info_pa);
err = ionic_dev_cmd_wait(lif->ionic, DEVCMD_TIMEOUT);
ionic_dev_cmd_comp(idev, (union ionic_dev_cmd_comp *)&comp);
mutex_unlock(&lif->ionic->dev_cmd_lock);
if (err)
return err;
lif->hw_index = le16_to_cpu(comp.hw_index);
/* now that we have the hw_index we can figure out our doorbell page */
lif->dbid_count = le32_to_cpu(lif->ionic->ident.dev.ndbpgs_per_lif);
if (!lif->dbid_count) {
dev_err(dev, "No doorbell pages, aborting\n");
return -EINVAL;
}
lif->dbid_inuse = bitmap_alloc(lif->dbid_count, GFP_KERNEL);
if (!lif->dbid_inuse) {
dev_err(dev, "Failed alloc doorbell id bitmap, aborting\n");
return -ENOMEM;
}
/* first doorbell id reserved for kernel (dbid aka pid == zero) */
set_bit(0, lif->dbid_inuse);
lif->kern_pid = 0;
dbpage_num = ionic_db_page_num(lif, lif->kern_pid);
lif->kern_dbpage = ionic_bus_map_dbpage(lif->ionic, dbpage_num);
if (!lif->kern_dbpage) {
dev_err(dev, "Cannot map dbpage, aborting\n");
err = -ENOMEM;
goto err_out_free_dbid;
}
err = ionic_lif_adminq_init(lif);
if (err)
goto err_out_adminq_deinit;
if (lif->ionic->nnqs_per_lif) {
err = ionic_lif_notifyq_init(lif);
if (err)
goto err_out_notifyq_deinit;
}
err = ionic_init_nic_features(lif);
if (err)
goto err_out_notifyq_deinit;
if (!test_bit(IONIC_LIF_F_FW_RESET, lif->state)) {
err = ionic_rx_filters_init(lif);
if (err)
goto err_out_notifyq_deinit;
}
err = ionic_station_set(lif);
if (err)
goto err_out_notifyq_deinit;
lif->rx_copybreak = IONIC_RX_COPYBREAK_DEFAULT;
set_bit(IONIC_LIF_F_INITED, lif->state);
INIT_WORK(&lif->tx_timeout_work, ionic_tx_timeout_work);
return 0;
err_out_notifyq_deinit:
ionic_lif_qcq_deinit(lif, lif->notifyqcq);
err_out_adminq_deinit:
ionic_lif_qcq_deinit(lif, lif->adminqcq);
ionic_lif_reset(lif);
ionic_bus_unmap_dbpage(lif->ionic, lif->kern_dbpage);
lif->kern_dbpage = NULL;
err_out_free_dbid:
kfree(lif->dbid_inuse);
lif->dbid_inuse = NULL;
return err;
}
int ionic_lifs_init(struct ionic *ionic)
{
struct list_head *cur, *tmp;
struct ionic_lif *lif;
int err;
list_for_each_safe(cur, tmp, &ionic->lifs) {
lif = list_entry(cur, struct ionic_lif, list);
err = ionic_lif_init(lif);
if (err)
return err;
}
return 0;
}
static void ionic_lif_notify_work(struct work_struct *ws)
{
}
static void ionic_lif_set_netdev_info(struct ionic_lif *lif)
{
struct ionic_admin_ctx ctx = {
.work = COMPLETION_INITIALIZER_ONSTACK(ctx.work),
.cmd.lif_setattr = {
.opcode = IONIC_CMD_LIF_SETATTR,
.index = cpu_to_le16(lif->index),
.attr = IONIC_LIF_ATTR_NAME,
},
};
strlcpy(ctx.cmd.lif_setattr.name, lif->netdev->name,
sizeof(ctx.cmd.lif_setattr.name));
ionic_adminq_post_wait(lif, &ctx);
}
static struct ionic_lif *ionic_netdev_lif(struct net_device *netdev)
{
if (!netdev || netdev->netdev_ops->ndo_start_xmit != ionic_start_xmit)
return NULL;
return netdev_priv(netdev);
}
static int ionic_lif_notify(struct notifier_block *nb,
unsigned long event, void *info)
{
struct net_device *ndev = netdev_notifier_info_to_dev(info);
struct ionic *ionic = container_of(nb, struct ionic, nb);
struct ionic_lif *lif = ionic_netdev_lif(ndev);
if (!lif || lif->ionic != ionic)
return NOTIFY_DONE;
switch (event) {
case NETDEV_CHANGENAME:
ionic_lif_set_netdev_info(lif);
break;
}
return NOTIFY_DONE;
}
int ionic_lifs_register(struct ionic *ionic)
{
int err;
INIT_WORK(&ionic->nb_work, ionic_lif_notify_work);
ionic->nb.notifier_call = ionic_lif_notify;
err = register_netdevice_notifier(&ionic->nb);
if (err)
ionic->nb.notifier_call = NULL;
/* only register LIF0 for now */
err = register_netdev(ionic->master_lif->netdev);
if (err) {
dev_err(ionic->dev, "Cannot register net device, aborting\n");
return err;
}
ionic->master_lif->registered = true;
return 0;
}
void ionic_lifs_unregister(struct ionic *ionic)
{
if (ionic->nb.notifier_call) {
unregister_netdevice_notifier(&ionic->nb);
cancel_work_sync(&ionic->nb_work);
ionic->nb.notifier_call = NULL;
}
/* There is only one lif ever registered in the
* current model, so don't bother searching the
* ionic->lif for candidates to unregister
*/
if (ionic->master_lif &&
ionic->master_lif->netdev->reg_state == NETREG_REGISTERED)
unregister_netdev(ionic->master_lif->netdev);
}
static void ionic_lif_queue_identify(struct ionic_lif *lif)
{
struct ionic *ionic = lif->ionic;
union ionic_q_identity *q_ident;
struct ionic_dev *idev;
int qtype;
int err;
idev = &lif->ionic->idev;
q_ident = (union ionic_q_identity *)&idev->dev_cmd_regs->data;
for (qtype = 0; qtype < ARRAY_SIZE(ionic_qtype_versions); qtype++) {
struct ionic_qtype_info *qti = &lif->qtype_info[qtype];
/* filter out the ones we know about */
switch (qtype) {
case IONIC_QTYPE_ADMINQ:
case IONIC_QTYPE_NOTIFYQ:
case IONIC_QTYPE_RXQ:
case IONIC_QTYPE_TXQ:
break;
default:
continue;
}
memset(qti, 0, sizeof(*qti));
mutex_lock(&ionic->dev_cmd_lock);
ionic_dev_cmd_queue_identify(idev, lif->lif_type, qtype,
ionic_qtype_versions[qtype]);
err = ionic_dev_cmd_wait(ionic, DEVCMD_TIMEOUT);
if (!err) {
qti->version = q_ident->version;
qti->supported = q_ident->supported;
qti->features = le64_to_cpu(q_ident->features);
qti->desc_sz = le16_to_cpu(q_ident->desc_sz);
qti->comp_sz = le16_to_cpu(q_ident->comp_sz);
qti->sg_desc_sz = le16_to_cpu(q_ident->sg_desc_sz);
qti->max_sg_elems = le16_to_cpu(q_ident->max_sg_elems);
qti->sg_desc_stride = le16_to_cpu(q_ident->sg_desc_stride);
}
mutex_unlock(&ionic->dev_cmd_lock);
if (err == -EINVAL) {
dev_err(ionic->dev, "qtype %d not supported\n", qtype);
continue;
} else if (err == -EIO) {
dev_err(ionic->dev, "q_ident failed, not supported on older FW\n");
return;
} else if (err) {
dev_err(ionic->dev, "q_ident failed, qtype %d: %d\n",
qtype, err);
return;
}
dev_dbg(ionic->dev, " qtype[%d].version = %d\n",
qtype, qti->version);
dev_dbg(ionic->dev, " qtype[%d].supported = 0x%02x\n",
qtype, qti->supported);
dev_dbg(ionic->dev, " qtype[%d].features = 0x%04llx\n",
qtype, qti->features);
dev_dbg(ionic->dev, " qtype[%d].desc_sz = %d\n",
qtype, qti->desc_sz);
dev_dbg(ionic->dev, " qtype[%d].comp_sz = %d\n",
qtype, qti->comp_sz);
dev_dbg(ionic->dev, " qtype[%d].sg_desc_sz = %d\n",
qtype, qti->sg_desc_sz);
dev_dbg(ionic->dev, " qtype[%d].max_sg_elems = %d\n",
qtype, qti->max_sg_elems);
dev_dbg(ionic->dev, " qtype[%d].sg_desc_stride = %d\n",
qtype, qti->sg_desc_stride);
}
}
int ionic_lif_identify(struct ionic *ionic, u8 lif_type,
union ionic_lif_identity *lid)
{
struct ionic_dev *idev = &ionic->idev;
size_t sz;
int err;
sz = min(sizeof(*lid), sizeof(idev->dev_cmd_regs->data));
mutex_lock(&ionic->dev_cmd_lock);
ionic_dev_cmd_lif_identify(idev, lif_type, IONIC_IDENTITY_VERSION_1);
err = ionic_dev_cmd_wait(ionic, DEVCMD_TIMEOUT);
memcpy_fromio(lid, &idev->dev_cmd_regs->data, sz);
mutex_unlock(&ionic->dev_cmd_lock);
if (err)
return (err);
dev_dbg(ionic->dev, "capabilities 0x%llx\n",
le64_to_cpu(lid->capabilities));
dev_dbg(ionic->dev, "eth.max_ucast_filters %d\n",
le32_to_cpu(lid->eth.max_ucast_filters));
dev_dbg(ionic->dev, "eth.max_mcast_filters %d\n",
le32_to_cpu(lid->eth.max_mcast_filters));
dev_dbg(ionic->dev, "eth.features 0x%llx\n",
le64_to_cpu(lid->eth.config.features));
dev_dbg(ionic->dev, "eth.queue_count[IONIC_QTYPE_ADMINQ] %d\n",
le32_to_cpu(lid->eth.config.queue_count[IONIC_QTYPE_ADMINQ]));
dev_dbg(ionic->dev, "eth.queue_count[IONIC_QTYPE_NOTIFYQ] %d\n",
le32_to_cpu(lid->eth.config.queue_count[IONIC_QTYPE_NOTIFYQ]));
dev_dbg(ionic->dev, "eth.queue_count[IONIC_QTYPE_RXQ] %d\n",
le32_to_cpu(lid->eth.config.queue_count[IONIC_QTYPE_RXQ]));
dev_dbg(ionic->dev, "eth.queue_count[IONIC_QTYPE_TXQ] %d\n",
le32_to_cpu(lid->eth.config.queue_count[IONIC_QTYPE_TXQ]));
dev_dbg(ionic->dev, "eth.config.name %s\n", lid->eth.config.name);
dev_dbg(ionic->dev, "eth.config.mac %pM\n", lid->eth.config.mac);
dev_dbg(ionic->dev, "eth.config.mtu %d\n",
le32_to_cpu(lid->eth.config.mtu));
return 0;
}
int ionic_lifs_size(struct ionic *ionic)
{
struct ionic_identity *ident = &ionic->ident;
unsigned int nintrs, dev_nintrs;
union ionic_lif_config *lc;
unsigned int ntxqs_per_lif;
unsigned int nrxqs_per_lif;
unsigned int neqs_per_lif;
unsigned int nnqs_per_lif;
unsigned int nxqs, neqs;
unsigned int min_intrs;
int err;
lc = &ident->lif.eth.config;
dev_nintrs = le32_to_cpu(ident->dev.nintrs);
neqs_per_lif = le32_to_cpu(ident->lif.rdma.eq_qtype.qid_count);
nnqs_per_lif = le32_to_cpu(lc->queue_count[IONIC_QTYPE_NOTIFYQ]);
ntxqs_per_lif = le32_to_cpu(lc->queue_count[IONIC_QTYPE_TXQ]);
nrxqs_per_lif = le32_to_cpu(lc->queue_count[IONIC_QTYPE_RXQ]);
nxqs = min(ntxqs_per_lif, nrxqs_per_lif);
nxqs = min(nxqs, num_online_cpus());
neqs = min(neqs_per_lif, num_online_cpus());
try_again:
/* interrupt usage:
* 1 for master lif adminq/notifyq
* 1 for each CPU for master lif TxRx queue pairs
* whatever's left is for RDMA queues
*/
nintrs = 1 + nxqs + neqs;
min_intrs = 2; /* adminq + 1 TxRx queue pair */
if (nintrs > dev_nintrs)
goto try_fewer;
err = ionic_bus_alloc_irq_vectors(ionic, nintrs);
if (err < 0 && err != -ENOSPC) {
dev_err(ionic->dev, "Can't get intrs from OS: %d\n", err);
return err;
}
if (err == -ENOSPC)
goto try_fewer;
if (err != nintrs) {
ionic_bus_free_irq_vectors(ionic);
goto try_fewer;
}
ionic->nnqs_per_lif = nnqs_per_lif;
ionic->neqs_per_lif = neqs;
ionic->ntxqs_per_lif = nxqs;
ionic->nrxqs_per_lif = nxqs;
ionic->nintrs = nintrs;
ionic_debugfs_add_sizes(ionic);
return 0;
try_fewer:
if (nnqs_per_lif > 1) {
nnqs_per_lif >>= 1;
goto try_again;
}
if (neqs > 1) {
neqs >>= 1;
goto try_again;
}
if (nxqs > 1) {
nxqs >>= 1;
goto try_again;
}
dev_err(ionic->dev, "Can't get minimum %d intrs from OS\n", min_intrs);
return -ENOSPC;
}