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crypto: ccp - Represent capabilities register as a union

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Making the capabilities register a union makes it easier to refer
to the members instead of always doing bit shifts.

No intended functional changes.

Acked-by: Tom Lendacky <thomas.lendacky@amd.com>
Suggested-by: Yazen Ghannam <yazen.ghannam@amd.com>
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Mario Limonciello
2024-05-28 16:07:08 -05:00
committed by Herbert Xu
parent 56ddb9aa3b
commit 8609dd25f9
5 changed files with 42 additions and 42 deletions
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11
drivers/crypto/ccp/psp-dev.c
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@@ -154,11 +154,10 @@ static unsigned int psp_get_capability(struct psp_device *psp)
dev_notice(psp->dev, "psp: unable to access the device: you might be running a broken BIOS.\n");
return -ENODEV;
}
psp->capability = val;
psp->capability.raw = val;
/* Detect TSME and/or SME status */
if (PSP_CAPABILITY(psp, PSP_SECURITY_REPORTING) &&
psp->capability & (PSP_SECURITY_TSME_STATUS << PSP_CAPABILITY_PSP_SECURITY_OFFSET)) {
if (psp->capability.security_reporting && psp->capability.tsme_status) {
if (cc_platform_has(CC_ATTR_HOST_MEM_ENCRYPT))
dev_notice(psp->dev, "psp: Both TSME and SME are active, SME is unnecessary when TSME is active.\n");
else
@@ -171,7 +170,7 @@ static unsigned int psp_get_capability(struct psp_device *psp)
static int psp_check_sev_support(struct psp_device *psp)
{
/* Check if device supports SEV feature */
if (!PSP_CAPABILITY(psp, SEV)) {
if (!psp->capability.sev) {
dev_dbg(psp->dev, "psp does not support SEV\n");
return -ENODEV;
}
@@ -182,7 +181,7 @@ static int psp_check_sev_support(struct psp_device *psp)
static int psp_check_tee_support(struct psp_device *psp)
{
/* Check if device supports TEE feature */
if (!PSP_CAPABILITY(psp, TEE)) {
if (!psp->capability.tee) {
dev_dbg(psp->dev, "psp does not support TEE\n");
return -ENODEV;
}
@@ -214,7 +213,7 @@ static int psp_init(struct psp_device *psp)
/* dbc must come after platform access as it tests the feature */
if (PSP_FEATURE(psp, DBC) ||
PSP_CAPABILITY(psp, DBC_THRU_EXT)) {
psp->capability.dbc_thru_ext) {
ret = dbc_dev_init(psp);
if (ret)
return ret;