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Merge branch 'net-remove-pci_enable_msix'

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Christoph Hellwig says:

====================
remove pci_enable_msix() V3

this series removes the remaining callers of the pci_enable_msix()
function and then the function itself.  The final removal has been
Acked by Bjorn.

Changes since V2:
 - add another patch on Dave's request
 - add various acks
 - spelling fixes in the commit logs

Changes since V1:
 - replace the two previous thunderx patches with a new one from Thanneeru
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2017-04-11 11:16:04 -04:00
commit 93411c27d6
10 changed files with 112 additions and 253 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

55
drivers/net/ethernet/amazon/ena/ena_netdev.c
View File

@ -133,7 +133,7 @@ static int ena_init_rx_cpu_rmap(struct ena_adapter *adapter)
int irq_idx = ENA_IO_IRQ_IDX(i);
rc = irq_cpu_rmap_add(adapter->netdev->rx_cpu_rmap,
adapter->msix_entries[irq_idx].vector);
pci_irq_vector(adapter->pdev, irq_idx));
if (rc) {
free_irq_cpu_rmap(adapter->netdev->rx_cpu_rmap);
adapter->netdev->rx_cpu_rmap = NULL;
@ -1208,13 +1208,7 @@ static irqreturn_t ena_intr_msix_io(int irq, void *data)
static int ena_enable_msix(struct ena_adapter *adapter, int num_queues)
{
int i, msix_vecs, rc;
if (test_bit(ENA_FLAG_MSIX_ENABLED, &adapter->flags)) {
netif_err(adapter, probe, adapter->netdev,
"Error, MSI-X is already enabled\n");
return -EPERM;
}
int msix_vecs, rc;
/* Reserved the max msix vectors we might need */
msix_vecs = ENA_MAX_MSIX_VEC(num_queues);
@ -1222,16 +1216,9 @@ static int ena_enable_msix(struct ena_adapter *adapter, int num_queues)
netif_dbg(adapter, probe, adapter->netdev,
"trying to enable MSI-X, vectors %d\n", msix_vecs);
adapter->msix_entries = vzalloc(msix_vecs * sizeof(struct msix_entry));
if (!adapter->msix_entries)
return -ENOMEM;
for (i = 0; i < msix_vecs; i++)
adapter->msix_entries[i].entry = i;
rc = pci_enable_msix(adapter->pdev, adapter->msix_entries, msix_vecs);
if (rc != 0) {
rc = pci_alloc_irq_vectors(adapter->pdev, msix_vecs, msix_vecs,
PCI_IRQ_MSIX);
if (rc < 0) {
netif_err(adapter, probe, adapter->netdev,
"Failed to enable MSI-X, vectors %d rc %d\n",
msix_vecs, rc);
@ -1248,7 +1235,6 @@ static int ena_enable_msix(struct ena_adapter *adapter, int num_queues)
}
adapter->msix_vecs = msix_vecs;
set_bit(ENA_FLAG_MSIX_ENABLED, &adapter->flags);
return 0;
}
@ -1264,7 +1250,7 @@ static void ena_setup_mgmnt_intr(struct ena_adapter *adapter)
ena_intr_msix_mgmnt;
adapter->irq_tbl[ENA_MGMNT_IRQ_IDX].data = adapter;
adapter->irq_tbl[ENA_MGMNT_IRQ_IDX].vector =
adapter->msix_entries[ENA_MGMNT_IRQ_IDX].vector;
pci_irq_vector(adapter->pdev, ENA_MGMNT_IRQ_IDX);
cpu = cpumask_first(cpu_online_mask);
adapter->irq_tbl[ENA_MGMNT_IRQ_IDX].cpu = cpu;
cpumask_set_cpu(cpu,
@ -1287,7 +1273,7 @@ static void ena_setup_io_intr(struct ena_adapter *adapter)
adapter->irq_tbl[irq_idx].handler = ena_intr_msix_io;
adapter->irq_tbl[irq_idx].data = &adapter->ena_napi[i];
adapter->irq_tbl[irq_idx].vector =
adapter->msix_entries[irq_idx].vector;
pci_irq_vector(adapter->pdev, irq_idx);
adapter->irq_tbl[irq_idx].cpu = cpu;
cpumask_set_cpu(cpu,
@ -1325,12 +1311,6 @@ static int ena_request_io_irq(struct ena_adapter *adapter)
struct ena_irq *irq;
int rc = 0, i, k;
if (!test_bit(ENA_FLAG_MSIX_ENABLED, &adapter->flags)) {
netif_err(adapter, ifup, adapter->netdev,
"Failed to request I/O IRQ: MSI-X is not enabled\n");
return -EINVAL;
}
for (i = ENA_IO_IRQ_FIRST_IDX; i < adapter->msix_vecs; i++) {
irq = &adapter->irq_tbl[i];
rc = request_irq(irq->vector, irq->handler, flags, irq->name,
@ -1389,16 +1369,6 @@ static void ena_free_io_irq(struct ena_adapter *adapter)
}
}
static void ena_disable_msix(struct ena_adapter *adapter)
{
if (test_and_clear_bit(ENA_FLAG_MSIX_ENABLED, &adapter->flags))
pci_disable_msix(adapter->pdev);
if (adapter->msix_entries)
vfree(adapter->msix_entries);
adapter->msix_entries = NULL;
}
static void ena_disable_io_intr_sync(struct ena_adapter *adapter)
{
int i;
@ -2479,8 +2449,7 @@ static int ena_enable_msix_and_set_admin_interrupts(struct ena_adapter *adapter,
return 0;
err_disable_msix:
ena_disable_msix(adapter);
pci_free_irq_vectors(adapter->pdev);
return rc;
}
@ -2518,7 +2487,7 @@ static void ena_fw_reset_device(struct work_struct *work)
ena_free_mgmnt_irq(adapter);
ena_disable_msix(adapter);
pci_free_irq_vectors(adapter->pdev);
ena_com_abort_admin_commands(ena_dev);
@ -2569,7 +2538,7 @@ static void ena_fw_reset_device(struct work_struct *work)
return;
err_disable_msix:
ena_free_mgmnt_irq(adapter);
ena_disable_msix(adapter);
pci_free_irq_vectors(adapter->pdev);
err_device_destroy:
ena_com_admin_destroy(ena_dev);
err:
@ -3103,7 +3072,7 @@ static int ena_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
err_free_msix:
ena_com_dev_reset(ena_dev);
ena_free_mgmnt_irq(adapter);
ena_disable_msix(adapter);
pci_free_irq_vectors(adapter->pdev);
err_worker_destroy:
ena_com_destroy_interrupt_moderation(ena_dev);
del_timer(&adapter->timer_service);
@ -3188,7 +3157,7 @@ static void ena_remove(struct pci_dev *pdev)
ena_free_mgmnt_irq(adapter);
ena_disable_msix(adapter);
pci_free_irq_vectors(adapter->pdev);
free_netdev(netdev);

2
drivers/net/ethernet/amazon/ena/ena_netdev.h
View File

@ -248,7 +248,6 @@ enum ena_flags_t {
ENA_FLAG_DEVICE_RUNNING,
ENA_FLAG_DEV_UP,
ENA_FLAG_LINK_UP,
ENA_FLAG_MSIX_ENABLED,
ENA_FLAG_TRIGGER_RESET
};
@ -267,7 +266,6 @@ struct ena_adapter {
int num_queues;
struct msix_entry *msix_entries;
int msix_vecs;
u32 tx_usecs, rx_usecs; /* interrupt moderation */

6
drivers/net/ethernet/atheros/alx/alx.h
View File

@ -102,9 +102,6 @@ struct alx_napi {
#define ALX_MAX_NAPIS 8
#define ALX_FLAG_USING_MSIX BIT(0)
#define ALX_FLAG_USING_MSI BIT(1)
struct alx_priv {
struct net_device *dev;
@ -112,7 +109,6 @@ struct alx_priv {
/* msi-x vectors */
int num_vec;
struct msix_entry *msix_entries;
/* all descriptor memory */
struct {
@ -139,8 +135,6 @@ struct alx_priv {
u16 msg_enable;
int flags;
/* protects hw.stats */
spinlock_t stats_lock;
};

128
drivers/net/ethernet/atheros/alx/main.c
View File

@ -314,7 +314,7 @@ static int alx_poll(struct napi_struct *napi, int budget)
napi_complete_done(&np->napi, work);
/* enable interrupt */
if (alx->flags & ALX_FLAG_USING_MSIX) {
if (alx->hw.pdev->msix_enabled) {
alx_mask_msix(hw, np->vec_idx, false);
} else {
spin_lock_irqsave(&alx->irq_lock, flags);
@ -811,7 +811,7 @@ static void alx_config_vector_mapping(struct alx_priv *alx)
u32 tbl[2] = {0, 0};
int i, vector, idx, shift;
if (alx->flags & ALX_FLAG_USING_MSIX) {
if (alx->hw.pdev->msix_enabled) {
/* tx mappings */
for (i = 0, vector = 1; i < alx->num_txq; i++, vector++) {
idx = txq_vec_mapping_shift[i * 2];
@ -828,29 +828,19 @@ static void alx_config_vector_mapping(struct alx_priv *alx)
alx_write_mem32(hw, ALX_MSI_ID_MAP, 0);
}
static bool alx_enable_msix(struct alx_priv *alx)
static int alx_enable_msix(struct alx_priv *alx)
{
int i, err, num_vec, num_txq, num_rxq;
int err, num_vec, num_txq, num_rxq;
num_txq = min_t(int, num_online_cpus(), ALX_MAX_TX_QUEUES);
num_rxq = 1;
num_vec = max_t(int, num_txq, num_rxq) + 1;
alx->msix_entries = kcalloc(num_vec, sizeof(struct msix_entry),
GFP_KERNEL);
if (!alx->msix_entries) {
netdev_warn(alx->dev, "Allocation of msix entries failed!\n");
return false;
}
for (i = 0; i < num_vec; i++)
alx->msix_entries[i].entry = i;
err = pci_enable_msix(alx->hw.pdev, alx->msix_entries, num_vec);
err = pci_alloc_irq_vectors(alx->hw.pdev, num_vec, num_vec,
PCI_IRQ_MSIX);
if (err) {
kfree(alx->msix_entries);
netdev_warn(alx->dev, "Enabling MSI-X interrupts failed!\n");
return false;
return err;
}
alx->num_vec = num_vec;
@ -858,7 +848,7 @@ static bool alx_enable_msix(struct alx_priv *alx)
alx->num_txq = num_txq;
alx->num_rxq = num_rxq;
return true;
return err;
}
static int alx_request_msix(struct alx_priv *alx)
@ -866,7 +856,7 @@ static int alx_request_msix(struct alx_priv *alx)
struct net_device *netdev = alx->dev;
int i, err, vector = 0, free_vector = 0;
err = request_irq(alx->msix_entries[0].vector, alx_intr_msix_misc,
err = request_irq(pci_irq_vector(alx->hw.pdev, 0), alx_intr_msix_misc,
0, netdev->name, alx);
if (err)
goto out_err;
@ -889,7 +879,7 @@ static int alx_request_msix(struct alx_priv *alx)
sprintf(np->irq_lbl, "%s-unused", netdev->name);
np->vec_idx = vector;
err = request_irq(alx->msix_entries[vector].vector,
err = request_irq(pci_irq_vector(alx->hw.pdev, vector),
alx_intr_msix_ring, 0, np->irq_lbl, np);
if (err)
goto out_free;
@ -897,47 +887,31 @@ static int alx_request_msix(struct alx_priv *alx)
return 0;
out_free:
free_irq(alx->msix_entries[free_vector++].vector, alx);
free_irq(pci_irq_vector(alx->hw.pdev, free_vector++), alx);
vector--;
for (i = 0; i < vector; i++)
free_irq(alx->msix_entries[free_vector++].vector,
free_irq(pci_irq_vector(alx->hw.pdev,free_vector++),
alx->qnapi[i]);
out_err:
return err;
}
static void alx_init_intr(struct alx_priv *alx, bool msix)
static int alx_init_intr(struct alx_priv *alx)
{
if (msix) {
if (alx_enable_msix(alx))
alx->flags |= ALX_FLAG_USING_MSIX;
}
int ret;
if (!(alx->flags & ALX_FLAG_USING_MSIX)) {
alx->num_vec = 1;
alx->num_napi = 1;
alx->num_txq = 1;
alx->num_rxq = 1;
ret = pci_alloc_irq_vectors(alx->hw.pdev, 1, 1,
PCI_IRQ_MSI | PCI_IRQ_LEGACY);
if (ret)
return ret;
if (!pci_enable_msi(alx->hw.pdev))
alx->flags |= ALX_FLAG_USING_MSI;
}
}
static void alx_disable_advanced_intr(struct alx_priv *alx)
{
if (alx->flags & ALX_FLAG_USING_MSIX) {
kfree(alx->msix_entries);
pci_disable_msix(alx->hw.pdev);
alx->flags &= ~ALX_FLAG_USING_MSIX;
}
if (alx->flags & ALX_FLAG_USING_MSI) {
pci_disable_msi(alx->hw.pdev);
alx->flags &= ~ALX_FLAG_USING_MSI;
}
alx->num_vec = 1;
alx->num_napi = 1;
alx->num_txq = 1;
alx->num_rxq = 1;
return 0;
}
static void alx_irq_enable(struct alx_priv *alx)
@ -950,10 +924,11 @@ static void alx_irq_enable(struct alx_priv *alx)
alx_write_mem32(hw, ALX_IMR, alx->int_mask);
alx_post_write(hw);
if (alx->flags & ALX_FLAG_USING_MSIX)
if (alx->hw.pdev->msix_enabled) {
/* enable all msix irqs */
for (i = 0; i < alx->num_vec; i++)
alx_mask_msix(hw, i, false);
}
}
static void alx_irq_disable(struct alx_priv *alx)
@ -965,13 +940,13 @@ static void alx_irq_disable(struct alx_priv *alx)
alx_write_mem32(hw, ALX_IMR, 0);
alx_post_write(hw);
if (alx->flags & ALX_FLAG_USING_MSIX) {
if (alx->hw.pdev->msix_enabled) {
for (i = 0; i < alx->num_vec; i++) {
alx_mask_msix(hw, i, true);
synchronize_irq(alx->msix_entries[i].vector);
synchronize_irq(pci_irq_vector(alx->hw.pdev, i));
}
} else {
synchronize_irq(alx->hw.pdev->irq);
synchronize_irq(pci_irq_vector(alx->hw.pdev, 0));
}
}
@ -981,8 +956,11 @@ static int alx_realloc_resources(struct alx_priv *alx)
alx_free_rings(alx);
alx_free_napis(alx);
alx_disable_advanced_intr(alx);
alx_init_intr(alx, false);
pci_free_irq_vectors(alx->hw.pdev);
err = alx_init_intr(alx);
if (err)
return err;
err = alx_alloc_napis(alx);
if (err)
@ -1004,7 +982,7 @@ static int alx_request_irq(struct alx_priv *alx)
msi_ctrl = (hw->imt >> 1) << ALX_MSI_RETRANS_TM_SHIFT;
if (alx->flags & ALX_FLAG_USING_MSIX) {
if (alx->hw.pdev->msix_enabled) {
alx_write_mem32(hw, ALX_MSI_RETRANS_TIMER, msi_ctrl);
err = alx_request_msix(alx);
if (!err)
@ -1016,20 +994,20 @@ static int alx_request_irq(struct alx_priv *alx)
goto out;
}
if (alx->flags & ALX_FLAG_USING_MSI) {
if (alx->hw.pdev->msi_enabled) {
alx_write_mem32(hw, ALX_MSI_RETRANS_TIMER,
msi_ctrl | ALX_MSI_MASK_SEL_LINE);
err = request_irq(pdev->irq, alx_intr_msi, 0,
err = request_irq(pci_irq_vector(pdev, 0), alx_intr_msi, 0,
alx->dev->name, alx);
if (!err)
goto out;
/* fall back to legacy interrupt */
alx->flags &= ~ALX_FLAG_USING_MSI;
pci_disable_msi(alx->hw.pdev);
pci_free_irq_vectors(alx->hw.pdev);
}
alx_write_mem32(hw, ALX_MSI_RETRANS_TIMER, 0);
err = request_irq(pdev->irq, alx_intr_legacy, IRQF_SHARED,
err = request_irq(pci_irq_vector(pdev, 0), alx_intr_legacy, IRQF_SHARED,
alx->dev->name, alx);
out:
if (!err)
@ -1042,18 +1020,15 @@ static int alx_request_irq(struct alx_priv *alx)
static void alx_free_irq(struct alx_priv *alx)
{
struct pci_dev *pdev = alx->hw.pdev;
int i, vector = 0;
int i;
if (alx->flags & ALX_FLAG_USING_MSIX) {
free_irq(alx->msix_entries[vector++].vector, alx);
free_irq(pci_irq_vector(pdev, 0), alx);
if (alx->hw.pdev->msix_enabled) {
for (i = 0; i < alx->num_napi; i++)
free_irq(alx->msix_entries[vector++].vector,
alx->qnapi[i]);
} else {
free_irq(pdev->irq, alx);
free_irq(pci_irq_vector(pdev, i + 1), alx->qnapi[i]);
}
alx_disable_advanced_intr(alx);
pci_free_irq_vectors(pdev);
}
static int alx_identify_hw(struct alx_priv *alx)
@ -1221,7 +1196,12 @@ static int __alx_open(struct alx_priv *alx, bool resume)
{
int err;
alx_init_intr(alx, true);
err = alx_enable_msix(alx);
if (err < 0) {
err = alx_init_intr(alx);
if (err)
return err;
}
if (!resume)
netif_carrier_off(alx->dev);
@ -1264,7 +1244,7 @@ static int __alx_open(struct alx_priv *alx, bool resume)
alx_free_rings(alx);
alx_free_napis(alx);
out_disable_adv_intr:
alx_disable_advanced_intr(alx);
pci_free_irq_vectors(alx->hw.pdev);
return err;
}
@ -1637,11 +1617,11 @@ static void alx_poll_controller(struct net_device *netdev)
struct alx_priv *alx = netdev_priv(netdev);
int i;
if (alx->flags & ALX_FLAG_USING_MSIX) {
if (alx->hw.pdev->msix_enabled) {
alx_intr_msix_misc(0, alx);
for (i = 0; i < alx->num_txq; i++)
alx_intr_msix_ring(0, alx->qnapi[i]);
} else if (alx->flags & ALX_FLAG_USING_MSI)
} else if (alx->hw.pdev->msi_enabled)
alx_intr_msi(0, alx);
else
alx_intr_legacy(0, alx);
@ -1783,7 +1763,7 @@ static int alx_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
netdev->netdev_ops = &alx_netdev_ops;
netdev->ethtool_ops = &alx_ethtool_ops;
netdev->irq = pdev->irq;
netdev->irq = pci_irq_vector(pdev, 0);
netdev->watchdog_timeo = ALX_WATCHDOG_TIME;
if (ent->driver_data & ALX_DEV_QUIRK_MSI_INTX_DISABLE_BUG)

2
drivers/net/ethernet/cavium/thunder/nic.h
View File

@ -319,9 +319,7 @@ struct nicvf {
struct bgx_stats bgx_stats;
/* MSI-X */
bool msix_enabled;
u8 num_vec;
struct msix_entry msix_entries[NIC_VF_MSIX_VECTORS];
char irq_name[NIC_VF_MSIX_VECTORS][IFNAMSIZ + 15];
bool irq_allocated[NIC_VF_MSIX_VECTORS];
cpumask_var_t affinity_mask[NIC_VF_MSIX_VECTORS];

64
drivers/net/ethernet/cavium/thunder/nic_main.c
View File

@ -65,9 +65,7 @@ struct nicpf {
bool mbx_lock[MAX_NUM_VFS_SUPPORTED];
/* MSI-X */
bool msix_enabled;
u8 num_vec;
struct msix_entry *msix_entries;
bool irq_allocated[NIC_PF_MSIX_VECTORS];
char irq_name[NIC_PF_MSIX_VECTORS][20];
};
@ -1088,7 +1086,7 @@ static irqreturn_t nic_mbx_intr_handler(int irq, void *nic_irq)
u64 intr;
u8 vf, vf_per_mbx_reg = 64;
if (irq == nic->msix_entries[NIC_PF_INTR_ID_MBOX0].vector)
if (irq == pci_irq_vector(nic->pdev, NIC_PF_INTR_ID_MBOX0))
mbx = 0;
else
mbx = 1;
@ -1107,51 +1105,13 @@ static irqreturn_t nic_mbx_intr_handler(int irq, void *nic_irq)
return IRQ_HANDLED;
}
static int nic_enable_msix(struct nicpf *nic)
{
int i, ret;
nic->num_vec = pci_msix_vec_count(nic->pdev);
nic->msix_entries = kmalloc_array(nic->num_vec,
sizeof(struct msix_entry),
GFP_KERNEL);
if (!nic->msix_entries)
return -ENOMEM;
for (i = 0; i < nic->num_vec; i++)
nic->msix_entries[i].entry = i;
ret = pci_enable_msix(nic->pdev, nic->msix_entries, nic->num_vec);
if (ret) {
dev_err(&nic->pdev->dev,
"Request for #%d msix vectors failed, returned %d\n",
nic->num_vec, ret);
kfree(nic->msix_entries);
return ret;
}
nic->msix_enabled = 1;
return 0;
}
static void nic_disable_msix(struct nicpf *nic)
{
if (nic->msix_enabled) {
pci_disable_msix(nic->pdev);
kfree(nic->msix_entries);
nic->msix_enabled = 0;
nic->num_vec = 0;
}
}
static void nic_free_all_interrupts(struct nicpf *nic)
{
int irq;
for (irq = 0; irq < nic->num_vec; irq++) {
if (nic->irq_allocated[irq])
free_irq(nic->msix_entries[irq].vector, nic);
free_irq(pci_irq_vector(nic->pdev, irq), nic);
nic->irq_allocated[irq] = false;
}
}
@ -1159,18 +1119,24 @@ static void nic_free_all_interrupts(struct nicpf *nic)
static int nic_register_interrupts(struct nicpf *nic)
{
int i, ret;
nic->num_vec = pci_msix_vec_count(nic->pdev);
/* Enable MSI-X */
ret = nic_enable_msix(nic);
if (ret)
return ret;
ret = pci_alloc_irq_vectors(nic->pdev, nic->num_vec, nic->num_vec,
PCI_IRQ_MSIX);
if (ret < 0) {
dev_err(&nic->pdev->dev,
"Request for #%d msix vectors failed, returned %d\n",
nic->num_vec, ret);
return 1;
}
/* Register mailbox interrupt handler */
for (i = NIC_PF_INTR_ID_MBOX0; i < nic->num_vec; i++) {
sprintf(nic->irq_name[i],
"NICPF Mbox%d", (i - NIC_PF_INTR_ID_MBOX0));
ret = request_irq(nic->msix_entries[i].vector,
ret = request_irq(pci_irq_vector(nic->pdev, i),
nic_mbx_intr_handler, 0,
nic->irq_name[i], nic);
if (ret)
@ -1186,14 +1152,16 @@ static int nic_register_interrupts(struct nicpf *nic)
fail:
dev_err(&nic->pdev->dev, "Request irq failed\n");
nic_free_all_interrupts(nic);
nic_disable_msix(nic);
pci_free_irq_vectors(nic->pdev);
nic->num_vec = 0;
return ret;
}
static void nic_unregister_interrupts(struct nicpf *nic)
{
nic_free_all_interrupts(nic);
nic_disable_msix(nic);
pci_free_irq_vectors(nic->pdev);
nic->num_vec = 0;
}
static int nic_num_sqs_en(struct nicpf *nic, int vf_en)

70
drivers/net/ethernet/cavium/thunder/nicvf_main.c
View File

@ -882,38 +882,9 @@ static irqreturn_t nicvf_qs_err_intr_handler(int irq, void *nicvf_irq)
return IRQ_HANDLED;
}
static int nicvf_enable_msix(struct nicvf *nic)
{
int ret, vec;
nic->num_vec = NIC_VF_MSIX_VECTORS;
for (vec = 0; vec < nic->num_vec; vec++)
nic->msix_entries[vec].entry = vec;
ret = pci_enable_msix(nic->pdev, nic->msix_entries, nic->num_vec);
if (ret) {
netdev_err(nic->netdev,
"Req for #%d msix vectors failed\n", nic->num_vec);
return 0;
}
nic->msix_enabled = 1;
return 1;
}
static void nicvf_disable_msix(struct nicvf *nic)
{
if (nic->msix_enabled) {
pci_disable_msix(nic->pdev);
nic->msix_enabled = 0;
nic->num_vec = 0;
}
}
static void nicvf_set_irq_affinity(struct nicvf *nic)
{
int vec, cpu;
int irqnum;
for (vec = 0; vec < nic->num_vec; vec++) {
if (!nic->irq_allocated[vec])
@ -930,15 +901,14 @@ static void nicvf_set_irq_affinity(struct nicvf *nic)
cpumask_set_cpu(cpumask_local_spread(cpu, nic->node),
nic->affinity_mask[vec]);
irqnum = nic->msix_entries[vec].vector;
irq_set_affinity_hint(irqnum, nic->affinity_mask[vec]);
irq_set_affinity_hint(pci_irq_vector(nic->pdev, vec),
nic->affinity_mask[vec]);
}
}
static int nicvf_register_interrupts(struct nicvf *nic)
{
int irq, ret = 0;
int vector;
for_each_cq_irq(irq)
sprintf(nic->irq_name[irq], "%s-rxtx-%d",
@ -957,8 +927,8 @@ static int nicvf_register_interrupts(struct nicvf *nic)
/* Register CQ interrupts */
for (irq = 0; irq < nic->qs->cq_cnt; irq++) {
vector = nic->msix_entries[irq].vector;
ret = request_irq(vector, nicvf_intr_handler,
ret = request_irq(pci_irq_vector(nic->pdev, irq),
nicvf_intr_handler,
0, nic->irq_name[irq], nic->napi[irq]);
if (ret)
goto err;
@ -968,8 +938,8 @@ static int nicvf_register_interrupts(struct nicvf *nic)
/* Register RBDR interrupt */
for (irq = NICVF_INTR_ID_RBDR;
irq < (NICVF_INTR_ID_RBDR + nic->qs->rbdr_cnt); irq++) {
vector = nic->msix_entries[irq].vector;
ret = request_irq(vector, nicvf_rbdr_intr_handler,
ret = request_irq(pci_irq_vector(nic->pdev, irq),
nicvf_rbdr_intr_handler,
0, nic->irq_name[irq], nic);
if (ret)
goto err;
@ -981,7 +951,7 @@ static int nicvf_register_interrupts(struct nicvf *nic)
nic->pnicvf->netdev->name,
nic->sqs_mode ? (nic->sqs_id + 1) : 0);
irq = NICVF_INTR_ID_QS_ERR;
ret = request_irq(nic->msix_entries[irq].vector,
ret = request_irq(pci_irq_vector(nic->pdev, irq),
nicvf_qs_err_intr_handler,
0, nic->irq_name[irq], nic);
if (ret)
@ -1001,6 +971,7 @@ static int nicvf_register_interrupts(struct nicvf *nic)
static void nicvf_unregister_interrupts(struct nicvf *nic)
{
struct pci_dev *pdev = nic->pdev;
int irq;
/* Free registered interrupts */
@ -1008,19 +979,20 @@ static void nicvf_unregister_interrupts(struct nicvf *nic)
if (!nic->irq_allocated[irq])
continue;
irq_set_affinity_hint(nic->msix_entries[irq].vector, NULL);
irq_set_affinity_hint(pci_irq_vector(pdev, irq), NULL);
free_cpumask_var(nic->affinity_mask[irq]);
if (irq < NICVF_INTR_ID_SQ)
free_irq(nic->msix_entries[irq].vector, nic->napi[irq]);
free_irq(pci_irq_vector(pdev, irq), nic->napi[irq]);
else
free_irq(nic->msix_entries[irq].vector, nic);
free_irq(pci_irq_vector(pdev, irq), nic);
nic->irq_allocated[irq] = false;
}
/* Disable MSI-X */
nicvf_disable_msix(nic);
pci_free_irq_vectors(pdev);
nic->num_vec = 0;
}
/* Initialize MSIX vectors and register MISC interrupt.
@ -1032,16 +1004,22 @@ static int nicvf_register_misc_interrupt(struct nicvf *nic)
int irq = NICVF_INTR_ID_MISC;
/* Return if mailbox interrupt is already registered */
if (nic->msix_enabled)
if (nic->pdev->msix_enabled)
return 0;
/* Enable MSI-X */
if (!nicvf_enable_msix(nic))
nic->num_vec = pci_msix_vec_count(nic->pdev);
ret = pci_alloc_irq_vectors(nic->pdev, nic->num_vec, nic->num_vec,
PCI_IRQ_MSIX);
if (ret < 0) {
netdev_err(nic->netdev,
"Req for #%d msix vectors failed\n", nic->num_vec);
return 1;
}
sprintf(nic->irq_name[irq], "%s Mbox", "NICVF");
/* Register Misc interrupt */
ret = request_irq(nic->msix_entries[irq].vector,
ret = request_irq(pci_irq_vector(nic->pdev, irq),
nicvf_misc_intr_handler, 0, nic->irq_name[irq], nic);
if (ret)
@ -1164,7 +1142,7 @@ int nicvf_stop(struct net_device *netdev)
/* Wait for pending IRQ handlers to finish */
for (irq = 0; irq < nic->num_vec; irq++)
synchronize_irq(nic->msix_entries[irq].vector);
synchronize_irq(pci_irq_vector(nic->pdev, irq));
tasklet_kill(&nic->rbdr_task);
tasklet_kill(&nic->qs_err_task);
@ -1365,7 +1343,7 @@ static int nicvf_set_mac_address(struct net_device *netdev, void *p)
memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
if (nic->msix_enabled) {
if (nic->pdev->msix_enabled) {
if (nicvf_hw_set_mac_addr(nic, netdev))
return -EBUSY;
} else {

13
drivers/net/ethernet/mellanox/mlxsw/pci.c
View File

@ -136,7 +136,6 @@ struct mlxsw_pci {
u8 __iomem *hw_addr;
struct mlxsw_pci_queue_type_group queues[MLXSW_PCI_QUEUE_TYPE_COUNT];
u32 doorbell_offset;
struct msix_entry msix_entry;
struct mlxsw_core *core;
struct {
struct mlxsw_pci_mem_item *items;
@ -1409,7 +1408,7 @@ static int mlxsw_pci_init(void *bus_priv, struct mlxsw_core *mlxsw_core,
if (err)
goto err_aqs_init;
err = request_irq(mlxsw_pci->msix_entry.vector,
err = request_irq(pci_irq_vector(pdev, 0),
mlxsw_pci_eq_irq_handler, 0,
mlxsw_pci->bus_info.device_kind, mlxsw_pci);
if (err) {
@ -1442,7 +1441,7 @@ static void mlxsw_pci_fini(void *bus_priv)
{
struct mlxsw_pci *mlxsw_pci = bus_priv;
free_irq(mlxsw_pci->msix_entry.vector, mlxsw_pci);
free_irq(pci_irq_vector(mlxsw_pci->pdev, 0), mlxsw_pci);
mlxsw_pci_aqs_fini(mlxsw_pci);
mlxsw_pci_fw_area_fini(mlxsw_pci);
mlxsw_pci_mbox_free(mlxsw_pci, &mlxsw_pci->cmd.out_mbox);
@ -1717,8 +1716,8 @@ static int mlxsw_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
goto err_sw_reset;
}
err = pci_enable_msix_exact(pdev, &mlxsw_pci->msix_entry, 1);
if (err) {
err = pci_alloc_irq_vectors(pdev, 1, 1, PCI_IRQ_MSIX);
if (err < 0) {
dev_err(&pdev->dev, "MSI-X init failed\n");
goto err_msix_init;
}
@ -1737,7 +1736,7 @@ static int mlxsw_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
return 0;
err_bus_device_register:
pci_disable_msix(mlxsw_pci->pdev);
pci_free_irq_vectors(mlxsw_pci->pdev);
err_msix_init:
err_sw_reset:
iounmap(mlxsw_pci->hw_addr);
@ -1757,7 +1756,7 @@ static void mlxsw_pci_remove(struct pci_dev *pdev)
struct mlxsw_pci *mlxsw_pci = pci_get_drvdata(pdev);
mlxsw_core_bus_device_unregister(mlxsw_pci->core);
pci_disable_msix(mlxsw_pci->pdev);
pci_free_irq_vectors(mlxsw_pci->pdev);
iounmap(mlxsw_pci->hw_addr);
pci_release_regions(mlxsw_pci->pdev);
pci_disable_device(mlxsw_pci->pdev);

21
drivers/pci/msi.c
View File

@ -973,27 +973,6 @@ static int __pci_enable_msix(struct pci_dev *dev, struct msix_entry *entries,
return msix_capability_init(dev, entries, nvec, affd);
}
/**
* pci_enable_msix - configure device's MSI-X capability structure
* @dev: pointer to the pci_dev data structure of MSI-X device function
* @entries: pointer to an array of MSI-X entries (optional)
* @nvec: number of MSI-X irqs requested for allocation by device driver
*
* Setup the MSI-X capability structure of device function with the number
* of requested irqs upon its software driver call to request for
* MSI-X mode enabled on its hardware device function. A return of zero
* indicates the successful configuration of MSI-X capability structure
* with new allocated MSI-X irqs. A return of < 0 indicates a failure.
* Or a return of > 0 indicates that driver request is exceeding the number
* of irqs or MSI-X vectors available. Driver should use the returned value to
* re-send its request.
**/
int pci_enable_msix(struct pci_dev *dev, struct msix_entry *entries, int nvec)
{
return __pci_enable_msix(dev, entries, nvec, NULL);
}
EXPORT_SYMBOL(pci_enable_msix);
void pci_msix_shutdown(struct pci_dev *dev)
{
struct msi_desc *entry;

4
include/linux/pci.h
View File

@ -1300,7 +1300,6 @@ int pci_msi_vec_count(struct pci_dev *dev);
void pci_msi_shutdown(struct pci_dev *dev);
void pci_disable_msi(struct pci_dev *dev);
int pci_msix_vec_count(struct pci_dev *dev);
int pci_enable_msix(struct pci_dev *dev, struct msix_entry *entries, int nvec);
void pci_msix_shutdown(struct pci_dev *dev);
void pci_disable_msix(struct pci_dev *dev);
void pci_restore_msi_state(struct pci_dev *dev);
@ -1330,9 +1329,6 @@ static inline int pci_msi_vec_count(struct pci_dev *dev) { return -ENOSYS; }
static inline void pci_msi_shutdown(struct pci_dev *dev) { }
static inline void pci_disable_msi(struct pci_dev *dev) { }
static inline int pci_msix_vec_count(struct pci_dev *dev) { return -ENOSYS; }
static inline int pci_enable_msix(struct pci_dev *dev,
struct msix_entry *entries, int nvec)
{ return -ENOSYS; }
static inline void pci_msix_shutdown(struct pci_dev *dev) { }
static inline void pci_disable_msix(struct pci_dev *dev) { }
static inline void pci_restore_msi_state(struct pci_dev *dev) { }