leandrof/linux
1
0
Fork 0
forked from Minki/linux
Code Issues Pull Requests Packages Projects Releases Wiki Activity

S2IO: Fixes for MSI and MSIX

Browse Source 
- 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 <sivakumar.subramani@neterion.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
This commit is contained in:
Sivakumar Subramani 2007-02-24 01:51:50 -05:00 committed by Jeff Garzik
parent ed227dcc2d
commit fb6a825b09
1 changed files with 28 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

35
drivers/net/s2io.c
View File

@ -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");