Commit c3a910e1 authored by Shannon Nelson's avatar Shannon Nelson Committed by David S. Miller
Browse files

ionic: fill out pci error handlers 



Set up the pci_error_handlers error_detected and resume to be useful in
handling AER events.  If the error detected is pci_channel_io_frozen we
set up to do an FLR at the end of the AER handling - this tends to clear
things up well enough that traffic can continue.  Else, let the AER/PCI
machinery do what is needed for the less serious errors seen.

Signed-off-by: default avatarShannon Nelson <shannon.nelson@amd.com>
Reviewed-by: default avatarBrett Creeley <brett.creeley@amd.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent ce66172d

drivers/net/ethernet/pensando/ionic/ionic_bus_pci.c

+25 −0
Original line number Diff line number Diff line
@@ -469,10 +469,35 @@ static void ionic_reset_done(struct pci_dev *pdev) 
		__func__, err ? "failed" : "done");

}



static pci_ers_result_t ionic_pci_error_detected(struct pci_dev *pdev,

						 pci_channel_state_t error)

{

	if (error == pci_channel_io_frozen) {

		ionic_reset_prepare(pdev);

		return PCI_ERS_RESULT_NEED_RESET;

	}



	return PCI_ERS_RESULT_NONE;

}



static void ionic_pci_error_resume(struct pci_dev *pdev)

{

	struct ionic *ionic = pci_get_drvdata(pdev);

	struct ionic_lif *lif = ionic->lif;



	if (lif && test_bit(IONIC_LIF_F_FW_RESET, lif->state))

		pci_reset_function_locked(pdev);

}



static const struct pci_error_handlers ionic_err_handler = {

	/* FLR handling */

	.reset_prepare      = ionic_reset_prepare,

	.reset_done         = ionic_reset_done,



	/* PCI bus error detected on this device */

	.error_detected     = ionic_pci_error_detected,

	.resume		    = ionic_pci_error_resume,



};



static struct pci_driver ionic_driver = {