From fb6a825b09a2311624e9cac20e643d9d7ef602dc Mon Sep 17 00:00:00 2001 From: Sivakumar Subramani Date: Sat, 24 Feb 2007 01:51:50 -0500 Subject: [PATCH] S2IO: Fixes for MSI and MSIX - Added debug statements to print a debug message if the MSI/MSI-X vector (or) data is zero. - This patch removes the code that will enable NAPI for the case of single ring and MSI-X / MSI case. There are some issue in the enabling NAPI with MSI/MSI-X. So we are turning off NAPI in the case of MSI/MSI-X. Signed-off-by: Sivakumar Subramani Signed-off-by: Jeff Garzik --- drivers/net/s2io.c | 35 ++++++++++++++++++++++++++++------- 1 file changed, 28 insertions(+), 7 deletions(-) diff --git a/drivers/net/s2io.c b/drivers/net/s2io.c index fd85648d98..7cc07c8e70 100644 --- a/drivers/net/s2io.c +++ b/drivers/net/s2io.c @@ -6112,7 +6112,7 @@ static int s2io_add_isr(struct s2io_nic * sp) } } if (sp->intr_type == MSI_X) { - int i; + int i, msix_tx_cnt=0,msix_rx_cnt=0; for (i=1; (sp->s2io_entries[i].in_use == MSIX_FLG); i++) { if (sp->s2io_entries[i].type == MSIX_FIFO_TYPE) { @@ -6121,16 +6121,36 @@ static int s2io_add_isr(struct s2io_nic * sp) err = request_irq(sp->entries[i].vector, s2io_msix_fifo_handle, 0, sp->desc[i], sp->s2io_entries[i].arg); - DBG_PRINT(ERR_DBG, "%s @ 0x%llx\n", sp->desc[i], - (unsigned long long)sp->msix_info[i].addr); + /* If either data or addr is zero print it */ + if(!(sp->msix_info[i].addr && + sp->msix_info[i].data)) { + DBG_PRINT(ERR_DBG, "%s @ Addr:0x%llx" + "Data:0x%lx\n",sp->desc[i], + (unsigned long long) + sp->msix_info[i].addr, + (unsigned long) + ntohl(sp->msix_info[i].data)); + } else { + msix_tx_cnt++; + } } else { sprintf(sp->desc[i], "%s:MSI-X-%d-RX", dev->name, i); err = request_irq(sp->entries[i].vector, s2io_msix_ring_handle, 0, sp->desc[i], sp->s2io_entries[i].arg); - DBG_PRINT(ERR_DBG, "%s @ 0x%llx\n", sp->desc[i], - (unsigned long long)sp->msix_info[i].addr); + /* If either data or addr is zero print it */ + if(!(sp->msix_info[i].addr && + sp->msix_info[i].data)) { + DBG_PRINT(ERR_DBG, "%s @ Addr:0x%llx" + "Data:0x%lx\n",sp->desc[i], + (unsigned long long) + sp->msix_info[i].addr, + (unsigned long) + ntohl(sp->msix_info[i].data)); + } else { + msix_rx_cnt++; + } } if (err) { DBG_PRINT(ERR_DBG,"%s:MSI-X-%d registration " @@ -6140,6 +6160,8 @@ static int s2io_add_isr(struct s2io_nic * sp) } sp->s2io_entries[i].in_use = MSIX_REGISTERED_SUCCESS; } + printk("MSI-X-TX %d entries enabled\n",msix_tx_cnt); + printk("MSI-X-RX %d entries enabled\n",msix_rx_cnt); } if (sp->intr_type == INTA) { err = request_irq((int) sp->pdev->irq, s2io_isr, IRQF_SHARED, @@ -6704,8 +6726,7 @@ static int s2io_verify_parm(struct pci_dev *pdev, u8 *dev_intr_type) "Defaulting to INTA\n"); *dev_intr_type = INTA; } - if ( (rx_ring_num > 1) && (*dev_intr_type != INTA) ) - napi = 0; + if (rx_ring_mode > 3) { DBG_PRINT(ERR_DBG, "s2io: Requested ring mode not supported\n"); DBG_PRINT(ERR_DBG, "s2io: Defaulting to 3-buffer mode\n"); -- 2.39.5