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authorJens Wiklander <jens.wiklander@linaro.org>2022-02-04 10:33:59 +0100
committerJens Wiklander <jens.wiklander@linaro.org>2022-02-16 07:49:41 +0100
commita45ea4efa358577c623d7353a6ba9af3c17f6ca0 (patch)
treecdcfaf05b949c5d508c583355c24ef64605ff48d /drivers/tee
parenttee: replace tee_shm_register() (diff)
downloadlinux-a45ea4efa358577c623d7353a6ba9af3c17f6ca0.tar.xz
linux-a45ea4efa358577c623d7353a6ba9af3c17f6ca0.zip
tee: refactor TEE_SHM_* flags
Removes the redundant TEE_SHM_DMA_BUF, TEE_SHM_EXT_DMA_BUF, TEE_SHM_MAPPED and TEE_SHM_KERNEL_MAPPED flags. TEE_SHM_REGISTER is renamed to TEE_SHM_DYNAMIC in order to better match its usage. Assigns new values to the remaining flags to void gaps. Reviewed-by: Sumit Garg <sumit.garg@linaro.org> Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
Diffstat (limited to 'drivers/tee')
-rw-r--r--drivers/tee/optee/smc_abi.c4
-rw-r--r--drivers/tee/tee_shm.c23
-rw-r--r--drivers/tee/tee_shm_pool.c2
3 files changed, 14 insertions, 15 deletions
diff --git a/drivers/tee/optee/smc_abi.c b/drivers/tee/optee/smc_abi.c
index ef3e27b602e6..e924928c2673 100644
--- a/drivers/tee/optee/smc_abi.c
+++ b/drivers/tee/optee/smc_abi.c
@@ -238,7 +238,7 @@ static int optee_to_msg_param(struct optee *optee,
case TEE_IOCTL_PARAM_ATTR_TYPE_MEMREF_INPUT:
case TEE_IOCTL_PARAM_ATTR_TYPE_MEMREF_OUTPUT:
case TEE_IOCTL_PARAM_ATTR_TYPE_MEMREF_INOUT:
- if (tee_shm_is_registered(p->u.memref.shm))
+ if (tee_shm_is_dynamic(p->u.memref.shm))
rc = to_msg_param_reg_mem(mp, p);
else
rc = to_msg_param_tmp_mem(mp, p);
@@ -679,7 +679,7 @@ static void handle_rpc_func_cmd_shm_alloc(struct tee_context *ctx,
sz = tee_shm_get_size(shm);
- if (tee_shm_is_registered(shm)) {
+ if (tee_shm_is_dynamic(shm)) {
struct page **pages;
u64 *pages_list;
size_t page_num;
diff --git a/drivers/tee/tee_shm.c b/drivers/tee/tee_shm.c
index 9db571253802..f31e29e8f1ca 100644
--- a/drivers/tee/tee_shm.c
+++ b/drivers/tee/tee_shm.c
@@ -58,7 +58,7 @@ static void tee_shm_release(struct tee_device *teedev, struct tee_shm *shm)
{
if (shm->flags & TEE_SHM_POOL) {
teedev->pool->ops->free(teedev->pool, shm);
- } else if (shm->flags & TEE_SHM_REGISTER) {
+ } else if (shm->flags & TEE_SHM_DYNAMIC) {
int rc = teedev->desc->ops->shm_unregister(shm->ctx, shm);
if (rc)
@@ -139,8 +139,7 @@ err_dev_put:
*/
struct tee_shm *tee_shm_alloc_user_buf(struct tee_context *ctx, size_t size)
{
- u32 flags = TEE_SHM_MAPPED | TEE_SHM_DMA_BUF | TEE_SHM_REGISTER |
- TEE_SHM_POOL;
+ u32 flags = TEE_SHM_DYNAMIC | TEE_SHM_POOL;
struct tee_device *teedev = ctx->teedev;
struct tee_shm *shm;
void *ret;
@@ -185,7 +184,7 @@ struct tee_shm *tee_shm_alloc_user_buf(struct tee_context *ctx, size_t size)
*/
struct tee_shm *tee_shm_alloc_kernel_buf(struct tee_context *ctx, size_t size)
{
- u32 flags = TEE_SHM_MAPPED | TEE_SHM_REGISTER | TEE_SHM_POOL;
+ u32 flags = TEE_SHM_DYNAMIC | TEE_SHM_POOL;
return shm_alloc_helper(ctx, size, PAGE_SIZE, flags, -1);
}
@@ -209,7 +208,7 @@ EXPORT_SYMBOL_GPL(tee_shm_alloc_kernel_buf);
*/
struct tee_shm *tee_shm_alloc_priv_buf(struct tee_context *ctx, size_t size)
{
- u32 flags = TEE_SHM_MAPPED | TEE_SHM_PRIV | TEE_SHM_POOL;
+ u32 flags = TEE_SHM_PRIV | TEE_SHM_POOL;
return shm_alloc_helper(ctx, size, sizeof(long) * 2, flags, -1);
}
@@ -306,7 +305,7 @@ err_dev_put:
struct tee_shm *tee_shm_register_user_buf(struct tee_context *ctx,
unsigned long addr, size_t length)
{
- u32 flags = TEE_SHM_DMA_BUF | TEE_SHM_USER_MAPPED | TEE_SHM_REGISTER;
+ u32 flags = TEE_SHM_USER_MAPPED | TEE_SHM_DYNAMIC;
struct tee_device *teedev = ctx->teedev;
struct tee_shm *shm;
void *ret;
@@ -350,7 +349,7 @@ struct tee_shm *tee_shm_register_user_buf(struct tee_context *ctx,
struct tee_shm *tee_shm_register_kernel_buf(struct tee_context *ctx,
void *addr, size_t length)
{
- u32 flags = TEE_SHM_REGISTER | TEE_SHM_KERNEL_MAPPED;
+ u32 flags = TEE_SHM_DYNAMIC;
return register_shm_helper(ctx, (unsigned long)addr, length, flags, -1);
}
@@ -394,7 +393,7 @@ int tee_shm_get_fd(struct tee_shm *shm)
{
int fd;
- if (!(shm->flags & TEE_SHM_DMA_BUF))
+ if (shm->id < 0)
return -EINVAL;
/* matched by tee_shm_put() in tee_shm_op_release() */
@@ -424,7 +423,7 @@ EXPORT_SYMBOL_GPL(tee_shm_free);
*/
int tee_shm_va2pa(struct tee_shm *shm, void *va, phys_addr_t *pa)
{
- if (!(shm->flags & TEE_SHM_MAPPED))
+ if (!shm->kaddr)
return -EINVAL;
/* Check that we're in the range of the shm */
if ((char *)va < (char *)shm->kaddr)
@@ -446,7 +445,7 @@ EXPORT_SYMBOL_GPL(tee_shm_va2pa);
*/
int tee_shm_pa2va(struct tee_shm *shm, phys_addr_t pa, void **va)
{
- if (!(shm->flags & TEE_SHM_MAPPED))
+ if (!shm->kaddr)
return -EINVAL;
/* Check that we're in the range of the shm */
if (pa < shm->paddr)
@@ -474,7 +473,7 @@ EXPORT_SYMBOL_GPL(tee_shm_pa2va);
*/
void *tee_shm_get_va(struct tee_shm *shm, size_t offs)
{
- if (!(shm->flags & TEE_SHM_MAPPED))
+ if (!shm->kaddr)
return ERR_PTR(-EINVAL);
if (offs >= shm->size)
return ERR_PTR(-EINVAL);
@@ -549,7 +548,7 @@ void tee_shm_put(struct tee_shm *shm)
* the refcount_inc() in tee_shm_get_from_id() never starts
* from 0.
*/
- if (shm->flags & TEE_SHM_DMA_BUF)
+ if (shm->id >= 0)
idr_remove(&teedev->idr, shm->id);
do_release = true;
}
diff --git a/drivers/tee/tee_shm_pool.c b/drivers/tee/tee_shm_pool.c
index 71e0f8ae69aa..058bfbac657a 100644
--- a/drivers/tee/tee_shm_pool.c
+++ b/drivers/tee/tee_shm_pool.c
@@ -30,7 +30,7 @@ static int pool_op_gen_alloc(struct tee_shm_pool *pool, struct tee_shm *shm,
* This is from a static shared memory pool so no need to register
* each chunk, and no need to unregister later either.
*/
- shm->flags &= ~TEE_SHM_REGISTER;
+ shm->flags &= ~TEE_SHM_DYNAMIC;
return 0;
}