diff options
Diffstat (limited to 'drivers/crypto/ccp')
| -rw-r--r-- | drivers/crypto/ccp/sev-dev.c | 49 | ||||
| -rw-r--r-- | drivers/crypto/ccp/sp-pci.c | 12 |
2 files changed, 35 insertions, 26 deletions
diff --git a/drivers/crypto/ccp/sev-dev.c b/drivers/crypto/ccp/sev-dev.c index 91808402e0bf..2ecb0e1f65d8 100644 --- a/drivers/crypto/ccp/sev-dev.c +++ b/drivers/crypto/ccp/sev-dev.c @@ -300,6 +300,9 @@ static int __sev_platform_shutdown_locked(int *error) struct sev_device *sev = psp_master->sev_data; int ret; + if (sev->state == SEV_STATE_UNINIT) + return 0; + ret = __sev_do_cmd_locked(SEV_CMD_SHUTDOWN, NULL, error); if (ret) return ret; @@ -1019,6 +1022,20 @@ e_err: return ret; } +static void sev_firmware_shutdown(struct sev_device *sev) +{ + sev_platform_shutdown(NULL); + + if (sev_es_tmr) { + /* The TMR area was encrypted, flush it from the cache */ + wbinvd_on_all_cpus(); + + free_pages((unsigned long)sev_es_tmr, + get_order(SEV_ES_TMR_SIZE)); + sev_es_tmr = NULL; + } +} + void sev_dev_destroy(struct psp_device *psp) { struct sev_device *sev = psp->sev_data; @@ -1026,6 +1043,8 @@ void sev_dev_destroy(struct psp_device *psp) if (!sev) return; + sev_firmware_shutdown(sev); + if (sev->misc) kref_put(&misc_dev->refcount, sev_exit); @@ -1056,21 +1075,6 @@ void sev_pci_init(void) if (sev_get_api_version()) goto err; - /* - * If platform is not in UNINIT state then firmware upgrade and/or - * platform INIT command will fail. These command require UNINIT state. - * - * In a normal boot we should never run into case where the firmware - * is not in UNINIT state on boot. But in case of kexec boot, a reboot - * may not go through a typical shutdown sequence and may leave the - * firmware in INIT or WORKING state. - */ - - if (sev->state != SEV_STATE_UNINIT) { - sev_platform_shutdown(NULL); - sev->state = SEV_STATE_UNINIT; - } - if (sev_version_greater_or_equal(0, 15) && sev_update_firmware(sev->dev) == 0) sev_get_api_version(); @@ -1115,17 +1119,10 @@ err: void sev_pci_exit(void) { - if (!psp_master->sev_data) - return; - - sev_platform_shutdown(NULL); + struct sev_device *sev = psp_master->sev_data; - if (sev_es_tmr) { - /* The TMR area was encrypted, flush it from the cache */ - wbinvd_on_all_cpus(); + if (!sev) + return; - free_pages((unsigned long)sev_es_tmr, - get_order(SEV_ES_TMR_SIZE)); - sev_es_tmr = NULL; - } + sev_firmware_shutdown(sev); } diff --git a/drivers/crypto/ccp/sp-pci.c b/drivers/crypto/ccp/sp-pci.c index 6fb6ba35f89d..9bcc1884c06a 100644 --- a/drivers/crypto/ccp/sp-pci.c +++ b/drivers/crypto/ccp/sp-pci.c @@ -241,6 +241,17 @@ e_err: return ret; } +static void sp_pci_shutdown(struct pci_dev *pdev) +{ + struct device *dev = &pdev->dev; + struct sp_device *sp = dev_get_drvdata(dev); + + if (!sp) + return; + + sp_destroy(sp); +} + static void sp_pci_remove(struct pci_dev *pdev) { struct device *dev = &pdev->dev; @@ -371,6 +382,7 @@ static struct pci_driver sp_pci_driver = { .id_table = sp_pci_table, .probe = sp_pci_probe, .remove = sp_pci_remove, + .shutdown = sp_pci_shutdown, .driver.pm = &sp_pci_pm_ops, }; |