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| author | Arindam Nath <arindam.nath@amd.com> | 2020-02-05 21:24:32 +0530 |
|---|---|---|
| committer | Jon Mason <jdmason@kudzu.us> | 2020-03-13 10:04:20 -0400 |
| commit | b350f0a3eb264962caefeb892af56c1b727ee03f (patch) | |
| tree | 2047b9b6e16f066c17da856ed5db695eb6181232 /drivers/ntb | |
| parent | ac10d4f6c2a8247de21655f4564b0e209c3c1dd4 (diff) | |
| download | linux-b350f0a3eb264962caefeb892af56c1b727ee03f.tar.gz linux-b350f0a3eb264962caefeb892af56c1b727ee03f.tar.bz2 linux-b350f0a3eb264962caefeb892af56c1b727ee03f.zip | |
NTB: add pci shutdown handler for AMD NTB
The PCI shutdown handler is invoked in response
to system reboot or shutdown. A data transfer
might still be in flight when this happens. So
the very first action we take here is to send
a link down notification, so that any pending
data transfer is terminated. Rest of the actions
are same as that of PCI remove handler.
Signed-off-by: Arindam Nath <arindam.nath@amd.com>
Signed-off-by: Jon Mason <jdmason@kudzu.us>
Diffstat (limited to 'drivers/ntb')
| -rw-r--r-- | drivers/ntb/hw/amd/ntb_hw_amd.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/drivers/ntb/hw/amd/ntb_hw_amd.c b/drivers/ntb/hw/amd/ntb_hw_amd.c index c6cea0005553..9e310e1ad4d0 100644 --- a/drivers/ntb/hw/amd/ntb_hw_amd.c +++ b/drivers/ntb/hw/amd/ntb_hw_amd.c @@ -1296,6 +1296,22 @@ static void amd_ntb_pci_remove(struct pci_dev *pdev) kfree(ndev); } +static void amd_ntb_pci_shutdown(struct pci_dev *pdev) +{ + struct amd_ntb_dev *ndev = pci_get_drvdata(pdev); + + /* Send link down notification */ + ntb_link_event(&ndev->ntb); + + amd_deinit_side_info(ndev); + ntb_peer_db_set(&ndev->ntb, BIT_ULL(ndev->db_last_bit)); + ntb_unregister_device(&ndev->ntb); + ndev_deinit_debugfs(ndev); + amd_deinit_dev(ndev); + amd_ntb_deinit_pci(ndev); + kfree(ndev); +} + static const struct file_operations amd_ntb_debugfs_info = { .owner = THIS_MODULE, .open = simple_open, @@ -1326,6 +1342,7 @@ static struct pci_driver amd_ntb_pci_driver = { .id_table = amd_ntb_pci_tbl, .probe = amd_ntb_pci_probe, .remove = amd_ntb_pci_remove, + .shutdown = amd_ntb_pci_shutdown, }; static int __init amd_ntb_pci_driver_init(void) |