Merge tag 'tee-shm-for-v5.18' of git://git.linaro.org:/people/jens.wiklander/linux-tee into arm/drivers

TEE shared memory cleanup for v5.18

- The TEE shared memory pool based on two pools is replaced with a single
  somewhat more capable pool.
- Replaces tee_shm_alloc() and tee_shm_register() with new functions
  easier to use and maintain.  The TEE subsystem and the TEE drivers are
  updated to use the new functions instead.
- The TEE based Trusted keys routines are updated to use the new
  simplified functions above.
- The OP-TEE based rng driver is updated to use the new simplified
  functions above.
- The TEE_SHM-flags are refactored to better match their usage

* tag 'tee-shm-for-v5.18' of git://git.linaro.org:/people/jens.wiklander/linux-tee:
  tee: refactor TEE_SHM_* flags
  tee: replace tee_shm_register()
  KEYS: trusted: tee: use tee_shm_register_kernel_buf()
  tee: add tee_shm_register_{user,kernel}_buf()
  optee: add optee_pool_op_free_helper()
  tee: replace tee_shm_alloc()
  tee: simplify shm pool handling
  tee: add tee_shm_alloc_user_buf()
  tee: remove unused tee_shm_pool_alloc_res_mem()
  hwrng: optee-rng: use tee_shm_alloc_kernel_buf()
  optee: use driver internal tee_context for some rpc

Link: https://lore.kernel.org/r/20220218184802.GA968155@jade
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

1 files changed, 9 insertions, 14 deletions

diff --git a/security/keys/trusted-keys/trusted_tee.c b/security/keys/trusted-keys/trusted_tee.c
index 2ce66c199e1d..c8626686ee1b 100644
--- a/security/keys/trusted-keys/trusted_tee.c
+++ b/security/keys/trusted-keys/trusted_tee.c
@@ -70,17 +70,15 @@ static int trusted_tee_seal(struct trusted_key_payload *p, char *datablob)
 	memset(&inv_arg, 0, sizeof(inv_arg));
 	memset(&param, 0, sizeof(param));
 
-	reg_shm_in = tee_shm_register(pvt_data.ctx, (unsigned long)p->key,
-				      p->key_len, TEE_SHM_DMA_BUF |
-				      TEE_SHM_KERNEL_MAPPED);
+	reg_shm_in = tee_shm_register_kernel_buf(pvt_data.ctx, p->key,
+						 p->key_len);
 	if (IS_ERR(reg_shm_in)) {
 		dev_err(pvt_data.dev, "key shm register failed\n");
 		return PTR_ERR(reg_shm_in);
 	}
 
-	reg_shm_out = tee_shm_register(pvt_data.ctx, (unsigned long)p->blob,
-				       sizeof(p->blob), TEE_SHM_DMA_BUF |
-				       TEE_SHM_KERNEL_MAPPED);
+	reg_shm_out = tee_shm_register_kernel_buf(pvt_data.ctx, p->blob,
+						  sizeof(p->blob));
 	if (IS_ERR(reg_shm_out)) {
 		dev_err(pvt_data.dev, "blob shm register failed\n");
 		ret = PTR_ERR(reg_shm_out);
@@ -131,17 +129,15 @@ static int trusted_tee_unseal(struct trusted_key_payload *p, char *datablob)
 	memset(&inv_arg, 0, sizeof(inv_arg));
 	memset(&param, 0, sizeof(param));
 
-	reg_shm_in = tee_shm_register(pvt_data.ctx, (unsigned long)p->blob,
-				      p->blob_len, TEE_SHM_DMA_BUF |
-				      TEE_SHM_KERNEL_MAPPED);
+	reg_shm_in = tee_shm_register_kernel_buf(pvt_data.ctx, p->blob,
+						 p->blob_len);
 	if (IS_ERR(reg_shm_in)) {
 		dev_err(pvt_data.dev, "blob shm register failed\n");
 		return PTR_ERR(reg_shm_in);
 	}
 
-	reg_shm_out = tee_shm_register(pvt_data.ctx, (unsigned long)p->key,
-				       sizeof(p->key), TEE_SHM_DMA_BUF |
-				       TEE_SHM_KERNEL_MAPPED);
+	reg_shm_out = tee_shm_register_kernel_buf(pvt_data.ctx, p->key,
+						  sizeof(p->key));
 	if (IS_ERR(reg_shm_out)) {
 		dev_err(pvt_data.dev, "key shm register failed\n");
 		ret = PTR_ERR(reg_shm_out);
@@ -192,8 +188,7 @@ static int trusted_tee_get_random(unsigned char *key, size_t key_len)
 	memset(&inv_arg, 0, sizeof(inv_arg));
 	memset(&param, 0, sizeof(param));
 
-	reg_shm = tee_shm_register(pvt_data.ctx, (unsigned long)key, key_len,
-				   TEE_SHM_DMA_BUF | TEE_SHM_KERNEL_MAPPED);
+	reg_shm = tee_shm_register_kernel_buf(pvt_data.ctx, key, key_len);
 	if (IS_ERR(reg_shm)) {
 		dev_err(pvt_data.dev, "key shm register failed\n");
 		return PTR_ERR(reg_shm);