diff options
| author | Shannon Nelson <shannon.nelson@amd.com> | 2023-09-14 15:31:59 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2023-09-18 09:28:22 +0100 |
| commit | ffa55858330f267beec995fc4f68098c91311c64 (patch) | |
| tree | 508771aff179e5741f2b4de48356a842750502e8 /drivers/net/ethernet/amd/pds_core/main.c | |
| parent | d557c094e7400929bbcd9df6500af0d5e3ab08c1 (diff) | |
pds_core: implement pci reset handlers
Implement the callbacks for a nice PCI reset. These get called
when a user is nice enough to use the sysfs PCI reset entry, e.g.
echo 1 > /sys/bus/pci/devices/0000:2b:00.0/reset
Signed-off-by: Shannon Nelson <shannon.nelson@amd.com>
Reviewed-by: Brett Creeley <brett.creeley@amd.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/amd/pds_core/main.c')
| -rw-r--r-- | drivers/net/ethernet/amd/pds_core/main.c | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/drivers/net/ethernet/amd/pds_core/main.c b/drivers/net/ethernet/amd/pds_core/main.c index 3a45bf474a19..4c7f982c12a1 100644 --- a/drivers/net/ethernet/amd/pds_core/main.c +++ b/drivers/net/ethernet/amd/pds_core/main.c @@ -445,12 +445,62 @@ static void pdsc_remove(struct pci_dev *pdev) devlink_free(dl); } +static void pdsc_reset_prepare(struct pci_dev *pdev) +{ + struct pdsc *pdsc = pci_get_drvdata(pdev); + + pdsc_fw_down(pdsc); + + pci_free_irq_vectors(pdev); + pdsc_unmap_bars(pdsc); + pci_release_regions(pdev); + pci_disable_device(pdev); +} + +static void pdsc_reset_done(struct pci_dev *pdev) +{ + struct pdsc *pdsc = pci_get_drvdata(pdev); + struct device *dev = pdsc->dev; + int err; + + err = pci_enable_device(pdev); + if (err) { + dev_err(dev, "Cannot enable PCI device: %pe\n", ERR_PTR(err)); + return; + } + pci_set_master(pdev); + + if (!pdev->is_virtfn) { + pcie_print_link_status(pdsc->pdev); + + err = pci_request_regions(pdsc->pdev, PDS_CORE_DRV_NAME); + if (err) { + dev_err(pdsc->dev, "Cannot request PCI regions: %pe\n", + ERR_PTR(err)); + return; + } + + err = pdsc_map_bars(pdsc); + if (err) + return; + } + + pdsc_fw_up(pdsc); +} + +static const struct pci_error_handlers pdsc_err_handler = { + /* FLR handling */ + .reset_prepare = pdsc_reset_prepare, + .reset_done = pdsc_reset_done, +}; + static struct pci_driver pdsc_driver = { .name = PDS_CORE_DRV_NAME, .id_table = pdsc_id_table, .probe = pdsc_probe, .remove = pdsc_remove, .sriov_configure = pdsc_sriov_configure, + .err_handler = &pdsc_err_handler, }; void *pdsc_get_pf_struct(struct pci_dev *vf_pdev) |