bnx2: Call pci_enable_msix() with actual number of vectors.
Based on original patch by Breno Leitão <leitao@linux.vnet.ibm.com>. Allocate the actual number of vectors and make use of fewer vectors if pci_enable_msix() returns > 0. We must allocate one additional vector for the cnic driver. Cc: Breno Leitão <leitao@linux.vnet.ibm.com> Reviewed-by: Benjamin Li <benli@broadcom.com> Reviewed-by: Matt Carlson <mcarlson@broadcom.com> Signed-off-by: Michael Chan <mchan@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Родитель
6fdae99555
Коммит
379b39a2ad
|
@ -864,7 +864,7 @@ bnx2_alloc_mem(struct bnx2 *bp)
|
|||
bnapi->hw_rx_cons_ptr =
|
||||
&bnapi->status_blk.msi->status_rx_quick_consumer_index0;
|
||||
if (bp->flags & BNX2_FLAG_MSIX_CAP) {
|
||||
for (i = 1; i < BNX2_MAX_MSIX_VEC; i++) {
|
||||
for (i = 1; i < bp->irq_nvecs; i++) {
|
||||
struct status_block_msix *sblk;
|
||||
|
||||
bnapi = &bp->bnx2_napi[i];
|
||||
|
@ -6152,7 +6152,7 @@ bnx2_free_irq(struct bnx2 *bp)
|
|||
static void
|
||||
bnx2_enable_msix(struct bnx2 *bp, int msix_vecs)
|
||||
{
|
||||
int i, rc;
|
||||
int i, total_vecs, rc;
|
||||
struct msix_entry msix_ent[BNX2_MAX_MSIX_VEC];
|
||||
struct net_device *dev = bp->dev;
|
||||
const int len = sizeof(bp->irq_tbl[0].name);
|
||||
|
@ -6171,13 +6171,29 @@ bnx2_enable_msix(struct bnx2 *bp, int msix_vecs)
|
|||
msix_ent[i].vector = 0;
|
||||
}
|
||||
|
||||
rc = pci_enable_msix(bp->pdev, msix_ent, BNX2_MAX_MSIX_VEC);
|
||||
total_vecs = msix_vecs;
|
||||
#ifdef BCM_CNIC
|
||||
total_vecs++;
|
||||
#endif
|
||||
rc = -ENOSPC;
|
||||
while (total_vecs >= BNX2_MIN_MSIX_VEC) {
|
||||
rc = pci_enable_msix(bp->pdev, msix_ent, total_vecs);
|
||||
if (rc <= 0)
|
||||
break;
|
||||
if (rc > 0)
|
||||
total_vecs = rc;
|
||||
}
|
||||
|
||||
if (rc != 0)
|
||||
return;
|
||||
|
||||
msix_vecs = total_vecs;
|
||||
#ifdef BCM_CNIC
|
||||
msix_vecs--;
|
||||
#endif
|
||||
bp->irq_nvecs = msix_vecs;
|
||||
bp->flags |= BNX2_FLAG_USING_MSIX | BNX2_FLAG_ONE_SHOT_MSI;
|
||||
for (i = 0; i < BNX2_MAX_MSIX_VEC; i++) {
|
||||
for (i = 0; i < total_vecs; i++) {
|
||||
bp->irq_tbl[i].vector = msix_ent[i].vector;
|
||||
snprintf(bp->irq_tbl[i].name, len, "%s-%d", dev->name, i);
|
||||
bp->irq_tbl[i].handler = bnx2_msi_1shot;
|
||||
|
|
|
@ -6637,9 +6637,12 @@ struct flash_spec {
|
|||
|
||||
#define BNX2_MAX_MSIX_HW_VEC 9
|
||||
#define BNX2_MAX_MSIX_VEC 9
|
||||
#define BNX2_BASE_VEC 0
|
||||
#define BNX2_TX_VEC 1
|
||||
#define BNX2_TX_INT_NUM (BNX2_TX_VEC << BNX2_PCICFG_INT_ACK_CMD_INT_NUM_SHIFT)
|
||||
#ifdef BCM_CNIC
|
||||
#define BNX2_MIN_MSIX_VEC 2
|
||||
#else
|
||||
#define BNX2_MIN_MSIX_VEC 1
|
||||
#endif
|
||||
|
||||
|
||||
struct bnx2_irq {
|
||||
irq_handler_t handler;
|
||||
|
|
Загрузка…
Ссылка в новой задаче