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tee: remove tee_shm_va2pa() and tee_shm_pa2va()

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We should not need to index into SHMs based on absolute VA/PA.
These functions are not used and this kind of usage should not be
encouraged anyway. Remove these functions.

Signed-off-by: Andrew Davis <afd@ti.com>
Reviewed-by: Sumit Garg <sumit.garg@linaro.org>
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
This commit is contained in:
Andrew Davis 2022-04-25 09:16:16 -05:00 committed by Jens Wiklander
parent 3123109284
commit 66eb6df79a
2 changed files with 0 additions and 68 deletions
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50
drivers/tee/tee_shm.c
View file

@ -414,56 +414,6 @@ void tee_shm_free(struct tee_shm *shm)
}
EXPORT_SYMBOL_GPL(tee_shm_free);
/**
* tee_shm_va2pa() - Get physical address of a virtual address
* @shm: Shared memory handle
* @va: Virtual address to tranlsate
* @pa: Returned physical address
* @returns 0 on success and < 0 on failure
*/
int tee_shm_va2pa(struct tee_shm *shm, void *va, phys_addr_t *pa)
{
if (!shm->kaddr)
return -EINVAL;
/* Check that we're in the range of the shm */
if ((char *)va < (char *)shm->kaddr)
return -EINVAL;
if ((char *)va >= ((char *)shm->kaddr + shm->size))
return -EINVAL;
return tee_shm_get_pa(
shm, (unsigned long)va - (unsigned long)shm->kaddr, pa);
}
EXPORT_SYMBOL_GPL(tee_shm_va2pa);
/**
* tee_shm_pa2va() - Get virtual address of a physical address
* @shm: Shared memory handle
* @pa: Physical address to tranlsate
* @va: Returned virtual address
* @returns 0 on success and < 0 on failure
*/
int tee_shm_pa2va(struct tee_shm *shm, phys_addr_t pa, void **va)
{
if (!shm->kaddr)
return -EINVAL;
/* Check that we're in the range of the shm */
if (pa < shm->paddr)
return -EINVAL;
if (pa >= (shm->paddr + shm->size))
return -EINVAL;
if (va) {
void *v = tee_shm_get_va(shm, pa - shm->paddr);
if (IS_ERR(v))
return PTR_ERR(v);
*va = v;
}
return 0;
}
EXPORT_SYMBOL_GPL(tee_shm_pa2va);
/**
* tee_shm_get_va() - Get virtual address of a shared memory plus an offset
* @shm: Shared memory handle

18
include/linux/tee_drv.h
View file

@ -298,24 +298,6 @@ void tee_shm_free(struct tee_shm *shm);
*/
void tee_shm_put(struct tee_shm *shm);
/**
* tee_shm_va2pa() - Get physical address of a virtual address
* @shm: Shared memory handle
* @va: Virtual address to tranlsate
* @pa: Returned physical address
* @returns 0 on success and < 0 on failure
*/
int tee_shm_va2pa(struct tee_shm *shm, void *va, phys_addr_t *pa);
/**
* tee_shm_pa2va() - Get virtual address of a physical address
* @shm: Shared memory handle
* @pa: Physical address to tranlsate
* @va: Returned virtual address
* @returns 0 on success and < 0 on failure
*/
int tee_shm_pa2va(struct tee_shm *shm, phys_addr_t pa, void **va);
/**
* tee_shm_get_va() - Get virtual address of a shared memory plus an offset
* @shm: Shared memory handle