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Message-Id: <20170327082936.6830-3-hch@lst.de>
Date: Mon, 27 Mar 2017 10:29:33 +0200
From: Christoph Hellwig <hch@....de>
To: bhelgaas@...gle.com, davem@...emloft.net,
netanel@...apurnalabs.com, jcliburn@...il.com,
chris.snook@...il.com, sgoutham@...ium.com, rric@...nel.org
Cc: netdev@...r.kernel.org, linux-pci@...r.kernel.org
Subject: [PATCH 2/5] net: thunderxvf: switch to pci_alloc_irq_vectors
Remove the deprecated pci_enable_msix API in favour of it's successor.
Signed-off-by: Christoph Hellwig <hch@....de>
---
drivers/net/ethernet/cavium/thunder/nic.h | 2 -
drivers/net/ethernet/cavium/thunder/nicvf_main.c | 70 ++++++++----------------
2 files changed, 24 insertions(+), 48 deletions(-)
diff --git a/drivers/net/ethernet/cavium/thunder/nic.h b/drivers/net/ethernet/cavium/thunder/nic.h
index 2269ff562d95..6fb44218bf55 100644
--- a/drivers/net/ethernet/cavium/thunder/nic.h
+++ b/drivers/net/ethernet/cavium/thunder/nic.h
@@ -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];
diff --git a/drivers/net/ethernet/cavium/thunder/nicvf_main.c b/drivers/net/ethernet/cavium/thunder/nicvf_main.c
index 24017588f531..183782ce9581 100644
--- a/drivers/net/ethernet/cavium/thunder/nicvf_main.c
+++ b/drivers/net/ethernet/cavium/thunder/nicvf_main.c
@@ -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 = NIC_VF_MSIX_VECTORS;
+ 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 {
--
2.11.0
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