diff options
| author | Mario Limonciello <mario.limonciello@amd.com> | 2023-09-07 13:48:45 -0500 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2023-09-15 18:29:46 +0800 |
| commit | 3d5845e18066990ede565ffe2975e6d89786da50 (patch) | |
| tree | 8880e6550489a81cf40a092bca27a50eaf459419 /drivers/crypto/ccp | |
| parent | 2ac85e22e1473775020ef6850c993bcb43957741 (diff) | |
crypto: ccp - Add a macro to check capabilities register
Offsets are checked by the capabilities register in multiple places.
To make the code more readable add a macro.
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/psp-dev.c | 6 | ||||
| -rw-r--r-- | drivers/crypto/ccp/sp-dev.h | 1 | ||||
| -rw-r--r-- | drivers/crypto/ccp/sp-pci.c | 4 |
3 files changed, 6 insertions, 5 deletions
diff --git a/drivers/crypto/ccp/psp-dev.c b/drivers/crypto/ccp/psp-dev.c index f9f3b3404f87..5f61b23695d5 100644 --- a/drivers/crypto/ccp/psp-dev.c +++ b/drivers/crypto/ccp/psp-dev.c @@ -157,7 +157,7 @@ static unsigned int psp_get_capability(struct psp_device *psp) psp->capability = val; /* Detect if TSME and SME are both enabled */ - if (psp->capability & PSP_CAPABILITY_PSP_SECURITY_REPORTING && + if (PSP_CAPABILITY(psp, PSP_SECURITY_REPORTING) && psp->capability & (PSP_SECURITY_TSME_STATUS << PSP_CAPABILITY_PSP_SECURITY_OFFSET) && 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"); @@ -168,7 +168,7 @@ 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_CAPABILITY_SEV)) { + if (!PSP_CAPABILITY(psp, SEV)) { dev_dbg(psp->dev, "psp does not support SEV\n"); return -ENODEV; } @@ -179,7 +179,7 @@ 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_CAPABILITY_TEE)) { + if (!PSP_CAPABILITY(psp, TEE)) { dev_dbg(psp->dev, "psp does not support TEE\n"); return -ENODEV; } diff --git a/drivers/crypto/ccp/sp-dev.h b/drivers/crypto/ccp/sp-dev.h index c4e125efe6c7..03d5b9e04084 100644 --- a/drivers/crypto/ccp/sp-dev.h +++ b/drivers/crypto/ccp/sp-dev.h @@ -30,6 +30,7 @@ #define PLATFORM_FEATURE_DBC 0x1 +#define PSP_CAPABILITY(psp, cap) (psp->capability & PSP_CAPABILITY_##cap) #define PSP_FEATURE(psp, feat) (psp->vdata && psp->vdata->platform_features & PLATFORM_FEATURE_##feat) /* Structure to hold CCP device data */ diff --git a/drivers/crypto/ccp/sp-pci.c b/drivers/crypto/ccp/sp-pci.c index d1aedc5c1a68..300dda14182b 100644 --- a/drivers/crypto/ccp/sp-pci.c +++ b/drivers/crypto/ccp/sp-pci.c @@ -84,7 +84,7 @@ static umode_t psp_security_is_visible(struct kobject *kobj, struct attribute *a struct sp_device *sp = dev_get_drvdata(dev); struct psp_device *psp = sp->psp_data; - if (psp && (psp->capability & PSP_CAPABILITY_PSP_SECURITY_REPORTING)) + if (psp && PSP_CAPABILITY(psp, PSP_SECURITY_REPORTING)) return 0444; return 0; @@ -135,7 +135,7 @@ static umode_t psp_firmware_is_visible(struct kobject *kobj, struct attribute *a val = ioread32(psp->io_regs + psp->vdata->bootloader_info_reg); if (attr == &dev_attr_tee_version.attr && - psp->capability & PSP_CAPABILITY_TEE && + PSP_CAPABILITY(psp, TEE) && psp->vdata->tee->info_reg) val = ioread32(psp->io_regs + psp->vdata->tee->info_reg); |