diff options
| author | Mario Limonciello <mario.limonciello@amd.com> | 2023-06-23 16:49:56 +0300 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2023-07-20 13:14:21 +0300 |
| commit | d9408716d2126439fbc46f6c40e72792069b8411 (patch) | |
| tree | 3a6fb2b8e00a0b4f9e6786e61ae588cc5db390b3 /drivers/crypto/ccp | |
| parent | c04cf9e14f109ebcc425c1efd2c01294c52a4d62 (diff) | |
| download | linux-d9408716d2126439fbc46f6c40e72792069b8411.tar.xz | |
crypto: ccp - Add support for setting user ID for dynamic boost control
As part of the authentication flow for Dynamic Boost Control, the calling
software will need to send a uid used in all of its future
communications.
Add support for another IOCTL call to let userspace software set this up.
Acked-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'drivers/crypto/ccp')
| -rw-r--r-- | drivers/crypto/ccp/dbc.c | 18 | ||||
| -rw-r--r-- | drivers/crypto/ccp/dbc.h | 6 |
2 files changed, 24 insertions, 0 deletions
diff --git a/drivers/crypto/ccp/dbc.c b/drivers/crypto/ccp/dbc.c index f65e93a81e53..c6f5fb3658ca 100644 --- a/drivers/crypto/ccp/dbc.c +++ b/drivers/crypto/ccp/dbc.c @@ -117,6 +117,24 @@ static long dbc_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) goto unlock; } break; + case DBCIOCUID: + dbc_dev->mbox->req.header.payload_size = sizeof(dbc_dev->mbox->dbc_set_uid); + if (copy_from_user(&dbc_dev->mbox->dbc_set_uid.user, argp, + sizeof(struct dbc_user_setuid))) { + ret = -EFAULT; + goto unlock; + } + + ret = send_dbc_cmd(dbc_dev, PSP_DYNAMIC_BOOST_SET_UID); + if (ret) + goto unlock; + + if (copy_to_user(argp, &dbc_dev->mbox->dbc_set_uid.user, + sizeof(struct dbc_user_setuid))) { + ret = -EFAULT; + goto unlock; + } + break; default: ret = -EINVAL; diff --git a/drivers/crypto/ccp/dbc.h b/drivers/crypto/ccp/dbc.h index 1c3a0a078d15..156435100076 100644 --- a/drivers/crypto/ccp/dbc.h +++ b/drivers/crypto/ccp/dbc.h @@ -33,9 +33,15 @@ struct dbc_nonce { struct dbc_user_nonce user; } __packed; +struct dbc_set_uid { + struct psp_req_buffer_hdr header; + struct dbc_user_setuid user; +} __packed; + union dbc_buffer { struct psp_request req; struct dbc_nonce dbc_nonce; + struct dbc_set_uid dbc_set_uid; }; void dbc_dev_destroy(struct psp_device *psp); |