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Message-ID: <20220422180139.13447-1-afd@ti.com>
Date: Fri, 22 Apr 2022 13:01:38 -0500
From: Andrew Davis <afd@...com>
To: Jens Wiklander <jens.wiklander@...aro.org>,
Sumit Garg <sumit.garg@...aro.org>,
<op-tee@...ts.trustedfirmware.org>, <linux-kernel@...r.kernel.org>
CC: Andrew Davis <afd@...com>
Subject: [PATCH 1/2] tee: remove tee_shm_va2pa() and tee_shm_pa2va()
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@...com>
---
drivers/tee/tee_shm.c | 50 -----------------------------------------
include/linux/tee_drv.h | 18 ---------------
2 files changed, 68 deletions(-)
diff --git a/drivers/tee/tee_shm.c b/drivers/tee/tee_shm.c
index f31e29e8f1cac..b0c6d553d3a70 100644
--- a/drivers/tee/tee_shm.c
+++ b/drivers/tee/tee_shm.c
@@ -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
diff --git a/include/linux/tee_drv.h b/include/linux/tee_drv.h
index 911cad324acc7..17eb1c5205d34 100644
--- a/include/linux/tee_drv.h
+++ b/include/linux/tee_drv.h
@@ -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
--
2.17.1
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