diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/tee/optee/core.c | 44 | ||||
| -rw-r--r-- | drivers/tee/optee/smc_abi.c | 45 |
2 files changed, 44 insertions, 45 deletions
diff --git a/drivers/tee/optee/core.c b/drivers/tee/optee/core.c index d01ca47f7bde..0c7336077a7b 100644 --- a/drivers/tee/optee/core.c +++ b/drivers/tee/optee/core.c @@ -26,46 +26,46 @@ int optee_pool_op_alloc_helper(struct tee_shm_pool *pool, struct tee_shm *shm, size_t num_pages, unsigned long start)) { - unsigned int order = get_order(size); - struct page *page; + size_t nr_pages = roundup(size, PAGE_SIZE) / PAGE_SIZE; + struct page **pages; + unsigned int i; int rc = 0; /* * Ignore alignment since this is already going to be page aligned * and there's no need for any larger alignment. */ - page = alloc_pages(GFP_KERNEL | __GFP_ZERO, order); - if (!page) + shm->kaddr = alloc_pages_exact(nr_pages * PAGE_SIZE, + GFP_KERNEL | __GFP_ZERO); + if (!shm->kaddr) return -ENOMEM; - shm->kaddr = page_address(page); - shm->paddr = page_to_phys(page); - shm->size = PAGE_SIZE << order; + shm->paddr = virt_to_phys(shm->kaddr); + shm->size = nr_pages * PAGE_SIZE; - if (shm_register) { - unsigned int nr_pages = 1 << order, i; - struct page **pages; + pages = kcalloc(nr_pages, sizeof(*pages), GFP_KERNEL); + if (!pages) { + rc = -ENOMEM; + goto err; + } - pages = kcalloc(nr_pages, sizeof(*pages), GFP_KERNEL); - if (!pages) { - rc = -ENOMEM; - goto err; - } + for (i = 0; i < nr_pages; i++) + pages[i] = virt_to_page((u8 *)shm->kaddr + i * PAGE_SIZE); - for (i = 0; i < nr_pages; i++) - pages[i] = page + i; + shm->pages = pages; + shm->num_pages = nr_pages; + if (shm_register) { rc = shm_register(shm->ctx, shm, pages, nr_pages, (unsigned long)shm->kaddr); - kfree(pages); if (rc) goto err; } return 0; - err: - free_pages((unsigned long)shm->kaddr, order); + free_pages_exact(shm->kaddr, shm->size); + shm->kaddr = NULL; return rc; } @@ -75,8 +75,10 @@ void optee_pool_op_free_helper(struct tee_shm_pool *pool, struct tee_shm *shm, { if (shm_unregister) shm_unregister(shm->ctx, shm); - free_pages((unsigned long)shm->kaddr, get_order(shm->size)); + free_pages_exact(shm->kaddr, shm->size); shm->kaddr = NULL; + kfree(shm->pages); + shm->pages = NULL; } static void optee_bus_scan(struct work_struct *work) diff --git a/drivers/tee/optee/smc_abi.c b/drivers/tee/optee/smc_abi.c index e158f3136c26..f934467bea44 100644 --- a/drivers/tee/optee/smc_abi.c +++ b/drivers/tee/optee/smc_abi.c @@ -678,10 +678,11 @@ static void handle_rpc_func_cmd_shm_alloc(struct tee_context *ctx, struct optee_msg_arg *arg, struct optee_call_ctx *call_ctx) { - phys_addr_t pa; struct tee_shm *shm; size_t sz; size_t n; + struct page **pages; + size_t page_count; arg->ret_origin = TEEC_ORIGIN_COMMS; @@ -716,32 +717,23 @@ static void handle_rpc_func_cmd_shm_alloc(struct tee_context *ctx, return; } - if (tee_shm_get_pa(shm, 0, &pa)) { - arg->ret = TEEC_ERROR_BAD_PARAMETERS; - goto bad; - } - - sz = tee_shm_get_size(shm); - - if (tee_shm_is_dynamic(shm)) { - struct page **pages; + /* + * If there are pages it's dynamically allocated shared memory (not + * from the reserved shared memory pool) and needs to be + * registered. + */ + pages = tee_shm_get_pages(shm, &page_count); + if (pages) { u64 *pages_list; - size_t page_num; - - pages = tee_shm_get_pages(shm, &page_num); - if (!pages || !page_num) { - arg->ret = TEEC_ERROR_OUT_OF_MEMORY; - goto bad; - } - pages_list = optee_allocate_pages_list(page_num); + pages_list = optee_allocate_pages_list(page_count); if (!pages_list) { arg->ret = TEEC_ERROR_OUT_OF_MEMORY; goto bad; } call_ctx->pages_list = pages_list; - call_ctx->num_entries = page_num; + call_ctx->num_entries = page_count; arg->params[0].attr = OPTEE_MSG_ATTR_TYPE_TMEM_OUTPUT | OPTEE_MSG_ATTR_NONCONTIG; @@ -752,17 +744,22 @@ static void handle_rpc_func_cmd_shm_alloc(struct tee_context *ctx, arg->params[0].u.tmem.buf_ptr = virt_to_phys(pages_list) | (tee_shm_get_page_offset(shm) & (OPTEE_MSG_NONCONTIG_PAGE_SIZE - 1)); - arg->params[0].u.tmem.size = tee_shm_get_size(shm); - arg->params[0].u.tmem.shm_ref = (unsigned long)shm; - optee_fill_pages_list(pages_list, pages, page_num, + optee_fill_pages_list(pages_list, pages, page_count, tee_shm_get_page_offset(shm)); } else { + phys_addr_t pa; + + if (tee_shm_get_pa(shm, 0, &pa)) { + arg->ret = TEEC_ERROR_BAD_PARAMETERS; + goto bad; + } + arg->params[0].attr = OPTEE_MSG_ATTR_TYPE_TMEM_OUTPUT; arg->params[0].u.tmem.buf_ptr = pa; - arg->params[0].u.tmem.size = sz; - arg->params[0].u.tmem.shm_ref = (unsigned long)shm; } + arg->params[0].u.tmem.size = tee_shm_get_size(shm); + arg->params[0].u.tmem.shm_ref = (unsigned long)shm; arg->ret = TEEC_SUCCESS; return; |