The i2c-designware-amdpsp driver communicates with a platform features mailbox provided by the PSP. The address used for communication is discovered via a non-architecturally guaranteed mechanism.
To better scale, export a feature for communication with platform features directly from the ccp driver.
v3->v4 Drop the ACPI ID as result of confirmation with internal team. Future platforms should use doorbell, so will treat Cezanne as quirk and assume doorbell going forward.
Mario Limonciello (8): crypto: ccp: Drop TEE support for IRQ handler crypto: ccp: Add a header for multiple drivers to use `__psp_pa` crypto: ccp: Move some PSP mailbox bit definitions into common header crypto: ccp: Add support for an interface for platform features crypto: ccp: Enable platform access interface on client PSP parts i2c: designware: Use PCI PSP driver for communication crypto: ccp: Add support for ringing a platform doorbell i2c: designware: Add doorbell support for Skyrim
arch/x86/kvm/svm/sev.c | 1 + drivers/crypto/ccp/Makefile | 3 +- drivers/crypto/ccp/platform-access.c | 232 ++++++++++++++++++++ drivers/crypto/ccp/platform-access.h | 35 +++ drivers/crypto/ccp/psp-dev.c | 32 +-- drivers/crypto/ccp/psp-dev.h | 11 +- drivers/crypto/ccp/sev-dev.c | 16 +- drivers/crypto/ccp/sev-dev.h | 2 +- drivers/crypto/ccp/sp-dev.h | 10 + drivers/crypto/ccp/sp-pci.c | 9 + drivers/crypto/ccp/tee-dev.c | 17 +- drivers/i2c/busses/Kconfig | 2 +- drivers/i2c/busses/i2c-designware-amdpsp.c | 188 ++++------------ drivers/i2c/busses/i2c-designware-core.h | 1 - drivers/i2c/busses/i2c-designware-platdrv.c | 1 - drivers/tee/amdtee/call.c | 2 +- drivers/tee/amdtee/shm_pool.c | 2 +- include/linux/psp-platform-access.h | 65 ++++++ include/linux/psp-sev.h | 8 - include/linux/psp.h | 29 +++ 20 files changed, 461 insertions(+), 205 deletions(-) create mode 100644 drivers/crypto/ccp/platform-access.c create mode 100644 drivers/crypto/ccp/platform-access.h create mode 100644 include/linux/psp-platform-access.h create mode 100644 include/linux/psp.h
The TEE subdriver for CCP, the amdtee driver and the i2c-designware-amdpsp drivers all include `psp-sev.h` even though they don't use SEV functionality.
Move the definition of `__psp_pa` into a common header to be included by all of these drivers.
Reviewed-by: Jan Dabros jsd@semihalf.com Acked-by: Jarkko Nikula jarkko.nikula@linux.intel.com # For the drivers/i2c/busses/i2c-designware-amdpsp.c Acked-by: Sumit Garg sumit.garg@linaro.org # For TEE subsystem bits Acked-by: Tom Lendacky thomas.lendacky@amd.com Acked-by: Sean Christopherson seanjc@google.com # KVM Signed-off-by: Mario Limonciello mario.limonciello@amd.com --- v3->v4: * Pick up tags v1->v2: * Add tags --- arch/x86/kvm/svm/sev.c | 1 + drivers/crypto/ccp/sev-dev.c | 1 + drivers/crypto/ccp/tee-dev.c | 2 +- drivers/i2c/busses/i2c-designware-amdpsp.c | 2 +- drivers/tee/amdtee/call.c | 2 +- drivers/tee/amdtee/shm_pool.c | 2 +- include/linux/psp-sev.h | 8 -------- include/linux/psp.h | 14 ++++++++++++++ 8 files changed, 20 insertions(+), 12 deletions(-) create mode 100644 include/linux/psp.h
diff --git a/arch/x86/kvm/svm/sev.c b/arch/x86/kvm/svm/sev.c index c25aeb550cd9..ec18a756b7c9 100644 --- a/arch/x86/kvm/svm/sev.c +++ b/arch/x86/kvm/svm/sev.c @@ -12,6 +12,7 @@ #include <linux/kvm_host.h> #include <linux/kernel.h> #include <linux/highmem.h> +#include <linux/psp.h> #include <linux/psp-sev.h> #include <linux/pagemap.h> #include <linux/swap.h> diff --git a/drivers/crypto/ccp/sev-dev.c b/drivers/crypto/ccp/sev-dev.c index e2f25926eb51..28945ca7c856 100644 --- a/drivers/crypto/ccp/sev-dev.c +++ b/drivers/crypto/ccp/sev-dev.c @@ -24,6 +24,7 @@ #include <linux/cpufeature.h> #include <linux/fs.h> #include <linux/fs_struct.h> +#include <linux/psp.h>
#include <asm/smp.h> #include <asm/cacheflush.h> diff --git a/drivers/crypto/ccp/tee-dev.c b/drivers/crypto/ccp/tee-dev.c index 5c9d47f3be37..f24fc953718a 100644 --- a/drivers/crypto/ccp/tee-dev.c +++ b/drivers/crypto/ccp/tee-dev.c @@ -13,7 +13,7 @@ #include <linux/delay.h> #include <linux/slab.h> #include <linux/gfp.h> -#include <linux/psp-sev.h> +#include <linux/psp.h> #include <linux/psp-tee.h>
#include "psp-dev.h" diff --git a/drivers/i2c/busses/i2c-designware-amdpsp.c b/drivers/i2c/busses/i2c-designware-amdpsp.c index 8f36167bce62..80f28a1bbbef 100644 --- a/drivers/i2c/busses/i2c-designware-amdpsp.c +++ b/drivers/i2c/busses/i2c-designware-amdpsp.c @@ -4,7 +4,7 @@ #include <linux/bits.h> #include <linux/i2c.h> #include <linux/io-64-nonatomic-lo-hi.h> -#include <linux/psp-sev.h> +#include <linux/psp.h> #include <linux/types.h> #include <linux/workqueue.h>
diff --git a/drivers/tee/amdtee/call.c b/drivers/tee/amdtee/call.c index cec6e70f0ac9..e8cd9aaa3467 100644 --- a/drivers/tee/amdtee/call.c +++ b/drivers/tee/amdtee/call.c @@ -8,7 +8,7 @@ #include <linux/tee_drv.h> #include <linux/psp-tee.h> #include <linux/slab.h> -#include <linux/psp-sev.h> +#include <linux/psp.h> #include "amdtee_if.h" #include "amdtee_private.h"
diff --git a/drivers/tee/amdtee/shm_pool.c b/drivers/tee/amdtee/shm_pool.c index f87f96a291c9..f0303126f199 100644 --- a/drivers/tee/amdtee/shm_pool.c +++ b/drivers/tee/amdtee/shm_pool.c @@ -5,7 +5,7 @@
#include <linux/slab.h> #include <linux/tee_drv.h> -#include <linux/psp-sev.h> +#include <linux/psp.h> #include "amdtee_private.h"
static int pool_op_alloc(struct tee_shm_pool *pool, struct tee_shm *shm, diff --git a/include/linux/psp-sev.h b/include/linux/psp-sev.h index 1595088c428b..7fd17e82bab4 100644 --- a/include/linux/psp-sev.h +++ b/include/linux/psp-sev.h @@ -14,14 +14,6 @@
#include <uapi/linux/psp-sev.h>
-#ifdef CONFIG_X86 -#include <linux/mem_encrypt.h> - -#define __psp_pa(x) __sme_pa(x) -#else -#define __psp_pa(x) __pa(x) -#endif - #define SEV_FW_BLOB_MAX_SIZE 0x4000 /* 16KB */
/** diff --git a/include/linux/psp.h b/include/linux/psp.h new file mode 100644 index 000000000000..202162487ec3 --- /dev/null +++ b/include/linux/psp.h @@ -0,0 +1,14 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ + +#ifndef __PSP_H +#define __PSP_H + +#ifdef CONFIG_X86 +#include <linux/mem_encrypt.h> + +#define __psp_pa(x) __sme_pa(x) +#else +#define __psp_pa(x) __pa(x) +#endif + +#endif /* __PSP_H */
On Fri, Mar 10, 2023 at 03:19:43PM -0600, Mario Limonciello wrote:
The i2c-designware-amdpsp driver communicates with a platform features mailbox provided by the PSP. The address used for communication is discovered via a non-architecturally guaranteed mechanism.
To better scale, export a feature for communication with platform features directly from the ccp driver.
v3->v4 Drop the ACPI ID as result of confirmation with internal team. Future platforms should use doorbell, so will treat Cezanne as quirk and assume doorbell going forward.
Mario Limonciello (8): crypto: ccp: Drop TEE support for IRQ handler crypto: ccp: Add a header for multiple drivers to use `__psp_pa` crypto: ccp: Move some PSP mailbox bit definitions into common header crypto: ccp: Add support for an interface for platform features crypto: ccp: Enable platform access interface on client PSP parts i2c: designware: Use PCI PSP driver for communication crypto: ccp: Add support for ringing a platform doorbell i2c: designware: Add doorbell support for Skyrim
arch/x86/kvm/svm/sev.c | 1 + drivers/crypto/ccp/Makefile | 3 +- drivers/crypto/ccp/platform-access.c | 232 ++++++++++++++++++++ drivers/crypto/ccp/platform-access.h | 35 +++ drivers/crypto/ccp/psp-dev.c | 32 +-- drivers/crypto/ccp/psp-dev.h | 11 +- drivers/crypto/ccp/sev-dev.c | 16 +- drivers/crypto/ccp/sev-dev.h | 2 +- drivers/crypto/ccp/sp-dev.h | 10 + drivers/crypto/ccp/sp-pci.c | 9 + drivers/crypto/ccp/tee-dev.c | 17 +- drivers/i2c/busses/Kconfig | 2 +- drivers/i2c/busses/i2c-designware-amdpsp.c | 188 ++++------------ drivers/i2c/busses/i2c-designware-core.h | 1 - drivers/i2c/busses/i2c-designware-platdrv.c | 1 - drivers/tee/amdtee/call.c | 2 +- drivers/tee/amdtee/shm_pool.c | 2 +- include/linux/psp-platform-access.h | 65 ++++++ include/linux/psp-sev.h | 8 - include/linux/psp.h | 29 +++ 20 files changed, 461 insertions(+), 205 deletions(-) create mode 100644 drivers/crypto/ccp/platform-access.c create mode 100644 drivers/crypto/ccp/platform-access.h create mode 100644 include/linux/psp-platform-access.h create mode 100644 include/linux/psp.h
-- 2.34.1
Patches 1-5 and 7 applied. Thanks.
op-tee@lists.trustedfirmware.org
-
Herbert Xu -
Mario Limonciello