From: Jens Wiklander <jens.wiklander@linaro.org>
To: linux-kernel@vger.kernel.org, op-tee@lists.trustedfirmware.org
Cc: Sumit Garg <sumit.garg@linaro.org>,
Herbert Xu <herbert@gondor.apana.org.au>,
Devaraj Rangasamy <Devaraj.Rangasamy@amd.com>,
Rijo Thomas <Rijo-john.Thomas@amd.com>,
David Howells <dhowells@redhat.com>,
Tyler Hicks <tyhicks@linux.microsoft.com>,
Jens Wiklander <jens.wiklander@linaro.org>
Subject: [PATCH v2 12/12] tee: refactor TEE_SHM_* flags
Date: Fri, 14 Jan 2022 16:08:24 +0100 [thread overview]
Message-ID: <20220114150824.3578829-13-jens.wiklander@linaro.org> (raw)
In-Reply-To: <20220114150824.3578829-1-jens.wiklander@linaro.org>
Removes the redundant TEE_SHM_DMA_BUF, TEE_SHM_EXT_DMA_BUF,
TEE_SHM_MAPPED and TEE_SHM_KERNEL_MAPPED flags.
Assigns new values to the remaining flags to void gaps.
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
---
drivers/tee/tee_shm.c | 21 ++++++++++-----------
include/linux/tee_drv.h | 12 ++++--------
2 files changed, 14 insertions(+), 19 deletions(-)
diff --git a/drivers/tee/tee_shm.c b/drivers/tee/tee_shm.c
index fe3e5977dd7c..9945bdec086b 100644
--- a/drivers/tee/tee_shm.c
+++ b/drivers/tee/tee_shm.c
@@ -139,8 +139,7 @@ static struct tee_shm *shm_alloc_helper(struct tee_context *ctx, size_t size,
*/
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_REGISTER | TEE_SHM_POOL;
struct tee_device *teedev = ctx->teedev;
struct tee_shm *shm;
void *ret;
@@ -186,7 +185,7 @@ EXPORT_SYMBOL_GPL(tee_shm_alloc_user_buf);
*/
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_REGISTER | TEE_SHM_POOL;
return shm_alloc_helper(ctx, size, PAGE_SIZE, flags, -1);
}
@@ -211,7 +210,7 @@ EXPORT_SYMBOL_GPL(tee_shm_alloc_kernel_buf);
struct tee_shm *tee_shm_alloc_priv_kernel_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);
}
@@ -308,7 +307,7 @@ register_shm_helper(struct tee_context *ctx, unsigned long addr,
struct tee_shm *tee_shm_register_user_buf(struct tee_context *ctx,
unsigned long addr, size_t length)
{
- u32 f = TEE_SHM_DMA_BUF | TEE_SHM_USER_MAPPED | TEE_SHM_REGISTER;
+ u32 f = TEE_SHM_USER_MAPPED | TEE_SHM_REGISTER;
struct tee_device *teedev = ctx->teedev;
struct tee_shm *shm;
void *ret;
@@ -354,7 +353,7 @@ EXPORT_SYMBOL_GPL(tee_shm_register_user_buf);
struct tee_shm *tee_shm_register_kernel_buf(struct tee_context *ctx,
void *addr, size_t length)
{
- u32 f = TEE_SHM_REGISTER | TEE_SHM_KERNEL_MAPPED;
+ u32 f = TEE_SHM_REGISTER;
return register_shm_helper(ctx, (unsigned long)addr, length, f, -1);
}
@@ -398,7 +397,7 @@ 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() */
@@ -428,7 +427,7 @@ 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)
@@ -450,7 +449,7 @@ 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)
@@ -478,7 +477,7 @@ 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);
@@ -553,7 +552,7 @@ 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/include/linux/tee_drv.h b/include/linux/tee_drv.h
index e4f32885e273..dcc7a55e1128 100644
--- a/include/linux/tee_drv.h
+++ b/include/linux/tee_drv.h
@@ -20,14 +20,10 @@
* specific TEE driver.
*/
-#define TEE_SHM_MAPPED BIT(0) /* Memory mapped by the kernel */
-#define TEE_SHM_DMA_BUF BIT(1) /* Memory with dma-buf handle */
-#define TEE_SHM_EXT_DMA_BUF BIT(2) /* Memory with dma-buf handle */
-#define TEE_SHM_REGISTER BIT(3) /* Memory registered in secure world */
-#define TEE_SHM_USER_MAPPED BIT(4) /* Memory mapped in user space */
-#define TEE_SHM_POOL BIT(5) /* Memory allocated from pool */
-#define TEE_SHM_KERNEL_MAPPED BIT(6) /* Memory mapped in kernel space */
-#define TEE_SHM_PRIV BIT(7) /* Memory private to TEE driver */
+#define TEE_SHM_REGISTER BIT(0) /* Memory registered in secure world */
+#define TEE_SHM_USER_MAPPED BIT(1) /* Memory mapped in user space */
+#define TEE_SHM_POOL BIT(2) /* Memory allocated from pool */
+#define TEE_SHM_PRIV BIT(3) /* Memory private to TEE driver */
struct device;
struct tee_device;
--
2.31.1
next prev parent reply other threads:[~2022-01-14 15:09 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-01-14 15:08 [PATCH v2 00/12] tee: shared memory updates Jens Wiklander
2022-01-14 15:08 ` [PATCH v2 01/12] hwrng: optee-rng: use tee_shm_alloc_kernel_buf() Jens Wiklander
2022-01-18 12:12 ` Sumit Garg
2022-01-14 15:08 ` [PATCH v2 02/12] tee: remove unused tee_shm_pool_alloc_res_mem() Jens Wiklander
2022-01-18 12:57 ` Sumit Garg
2022-01-14 15:08 ` [PATCH v2 03/12] tee: add tee_shm_alloc_user_buf() Jens Wiklander
2022-01-18 13:11 ` Sumit Garg
2022-01-19 7:36 ` Jens Wiklander
2022-01-14 15:08 ` [PATCH v2 04/12] tee: simplify shm pool handling Jens Wiklander
2022-01-20 10:06 ` Sumit Garg
2022-01-20 12:56 ` Jens Wiklander
2022-01-21 13:06 ` Sumit Garg
2022-01-21 13:47 ` Jens Wiklander
2022-01-14 15:08 ` [PATCH v2 05/12] tee: replace tee_shm_alloc() Jens Wiklander
2022-01-20 10:41 ` Sumit Garg
2022-01-20 13:02 ` Jens Wiklander
2022-01-14 15:08 ` [PATCH v2 06/12] optee: add driver private tee_context Jens Wiklander
2022-01-21 12:48 ` Sumit Garg
2022-01-24 13:58 ` Jens Wiklander
2022-01-14 15:08 ` [PATCH v2 07/12] optee: use driver internal tee_contex for some rpc Jens Wiklander
2022-01-21 12:54 ` Sumit Garg
2022-01-21 13:28 ` Jerome Forissier
2022-01-21 13:37 ` Sumit Garg
2022-01-21 14:02 ` Jens Wiklander
2022-01-14 15:08 ` [PATCH v2 08/12] optee: add optee_pool_op_free_helper() Jens Wiklander
2022-01-20 10:57 ` Sumit Garg
2022-01-14 15:08 ` [PATCH v2 09/12] tee: add tee_shm_register_{user,kernel}_buf() Jens Wiklander
2022-01-20 11:00 ` Sumit Garg
2022-01-20 13:06 ` Jens Wiklander
2022-01-14 15:08 ` [PATCH v2 10/12] KEYS: trusted: tee: use tee_shm_register_kernel_buf() Jens Wiklander
2022-01-20 11:03 ` Sumit Garg
2022-01-14 15:08 ` [PATCH v2 11/12] tee: replace tee_shm_register() Jens Wiklander
2022-01-20 11:51 ` Sumit Garg
2022-01-20 14:12 ` Jens Wiklander
2022-01-21 12:57 ` Sumit Garg
2022-01-14 15:08 ` Jens Wiklander [this message]
2022-01-20 13:03 ` [PATCH v2 12/12] tee: refactor TEE_SHM_* flags Sumit Garg
2022-01-21 7:23 ` Jens Wiklander
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