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[pci] Generalise function-level reset mechanism

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Signed-off-by: Michael Brown <mcb30@ipxe.org>
This commit is contained in:
Michael Brown
2022-08-08 16:39:40 +01:00
parent 9dfcdc04c8
commit 0965cec53c
3 changed files with 26 additions and 20 deletions
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23
src/drivers/net/intelxlvf.c
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@@ -45,23 +45,6 @@ FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
******************************************************************************
*/
/**
* Reset hardware via PCIe function-level reset
*
* @v intelxl Intel device
*/
static void intelxlvf_reset_flr ( struct intelxl_nic *intelxl,
struct pci_device *pci ) {
uint16_t control;
/* Perform a PCIe function-level reset */
pci_read_config_word ( pci, ( intelxl->exp + PCI_EXP_DEVCTL ),
&control );
pci_write_config_word ( pci, ( intelxl->exp + PCI_EXP_DEVCTL ),
( control | PCI_EXP_DEVCTL_FLR ) );
mdelay ( INTELXL_RESET_DELAY_MS );
}
/**
* Wait for admin event queue to be torn down
*
@@ -637,7 +620,7 @@ static int intelxlvf_probe ( struct pci_device *pci ) {
}
/* Reset the function via PCIe FLR */
intelxlvf_reset_flr ( intelxl, pci );
pci_reset ( pci, intelxl->exp );
/* Enable MSI-X dummy interrupt */
if ( ( rc = intelxl_msix_enable ( intelxl, pci ) ) != 0 )
@@ -669,7 +652,7 @@ static int intelxlvf_probe ( struct pci_device *pci ) {
err_open_admin:
intelxl_msix_disable ( intelxl, pci );
err_msix:
intelxlvf_reset_flr ( intelxl, pci );
pci_reset ( pci, intelxl->exp );
err_exp:
iounmap ( intelxl->regs );
err_ioremap:
@@ -701,7 +684,7 @@ static void intelxlvf_remove ( struct pci_device *pci ) {
intelxl_msix_disable ( intelxl, pci );
/* Reset the function via PCIe FLR */
intelxlvf_reset_flr ( intelxl, pci );
pci_reset ( pci, intelxl->exp );
/* Free network device */
iounmap ( intelxl->regs );