diff options
| author |   Gilad Ben-Yossef <gilad@benyossef.com> | 2019-04-18 16:38:40 +0300 |
|---|---|---|
| committer |   Herbert Xu <herbert@gondor.apana.org.au> | 2019-04-25 15:38:13 +0800 |
| commit | cadfd8987af0e3d5dd74254a302d019a3b369d2d (patch) | |
| tree | a39069f940de0a6bea48d69408bc67e44447d354 /drivers/crypto/ccree/cc_driver.c | |
| parent | crypto: ccree - add support for sec disabled mode (diff) | |
| download | linux-dev-cadfd8987af0e3d5dd74254a302d019a3b369d2d.tar.xz linux-dev-cadfd8987af0e3d5dd74254a302d019a3b369d2d.zip | |
crypto: ccree - add CPP completion handling
Add the logic needed to track and report CPP operation rejection.
The new logic will be used by the CPP feature introduced later.
Signed-off-by: Gilad Ben-Yossef <gilad@benyossef.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'drivers/crypto/ccree/cc_driver.c')
| -rw-r--r-- | drivers/crypto/ccree/cc_driver.c | 25 |
1 files changed, 17 insertions, 8 deletions
diff --git a/drivers/crypto/ccree/cc_driver.c b/drivers/crypto/ccree/cc_driver.c index 255d2367bfa8..1cded418f223 100644 --- a/drivers/crypto/ccree/cc_driver.c +++ b/drivers/crypto/ccree/cc_driver.c @@ -118,12 +118,12 @@ static irqreturn_t cc_isr(int irq, void *dev_id) drvdata->irq = irr; /* Completion interrupt - most probable */ - if (irr & CC_COMP_IRQ_MASK) { - /* Mask AXI completion interrupt - will be unmasked in - * Deferred service handler + if (irr & drvdata->comp_mask) { + /* Mask all completion interrupts - will be unmasked in + * deferred service handler */ - cc_iowrite(drvdata, CC_REG(HOST_IMR), imr | CC_COMP_IRQ_MASK); - irr &= ~CC_COMP_IRQ_MASK; + cc_iowrite(drvdata, CC_REG(HOST_IMR), imr | drvdata->comp_mask); + irr &= ~drvdata->comp_mask; complete_request(drvdata); } #ifdef CONFIG_CRYPTO_FIPS @@ -175,7 +175,7 @@ int init_cc_regs(struct cc_drvdata *drvdata, bool is_probe) cc_iowrite(drvdata, CC_REG(HOST_ICR), val); /* Unmask relevant interrupt cause */ - val = CC_COMP_IRQ_MASK | CC_AXI_ERR_IRQ_MASK; + val = drvdata->comp_mask | CC_AXI_ERR_IRQ_MASK; if (drvdata->hw_rev >= CC_HW_REV_712) val |= CC_GPR0_IRQ_MASK; @@ -235,6 +235,8 @@ static int init_cc_resources(struct platform_device *plat_dev) new_drvdata->ver_offset = CC_REG(HOST_VERSION_630); } + new_drvdata->comp_mask = CC_COMP_IRQ_MASK; + platform_set_drvdata(plat_dev, new_drvdata); new_drvdata->plat_dev = plat_dev; @@ -315,6 +317,8 @@ static int init_cc_resources(struct platform_device *plat_dev) return rc; } + new_drvdata->sec_disabled = cc_sec_disable; + if (hw_rev->rev <= CC_HW_REV_712) { /* Verify correct mapping */ val = cc_ioread(new_drvdata, new_drvdata->sig_offset); @@ -328,10 +332,15 @@ static int init_cc_resources(struct platform_device *plat_dev) } else { val = cc_ioread(new_drvdata, CC_REG(SECURITY_DISABLED)); val &= CC_SECURITY_DISABLED_MASK; - new_drvdata->sec_disabled = !!val; + new_drvdata->sec_disabled |= !!val; + + if (!new_drvdata->sec_disabled) { + new_drvdata->comp_mask |= CC_CPP_SM4_ABORT_MASK; + if (new_drvdata->std_bodies & CC_STD_NIST) + new_drvdata->comp_mask |= CC_CPP_AES_ABORT_MASK; + } } - new_drvdata->sec_disabled |= cc_sec_disable; if (new_drvdata->sec_disabled) dev_info(dev, "Security Disabled mode is in effect. Security functions disabled.\n"); |