1 // SPDX-License-Identifier: GPL-2.0-only
6 #include <linux/dma-buf.h>
16 	struct gen_pool *genpool = poolm->private_data;  in pool_op_gen_alloc()
17 	size_t s = roundup(size, 1 << genpool->min_alloc_order);  in pool_op_gen_alloc()
21 		return -ENOMEM;  in pool_op_gen_alloc()
24 	shm->kaddr = (void *)va;  in pool_op_gen_alloc()
25 	shm->paddr = gen_pool_virt_to_phys(genpool, va);  in pool_op_gen_alloc()
26 	shm->size = s;  in pool_op_gen_alloc()
33 	gen_pool_free(poolm->private_data, (unsigned long)shm->kaddr,  in pool_op_gen_free()
34 		      shm->size);  in pool_op_gen_free()
35 	shm->kaddr = NULL;  in pool_op_gen_free()
40 	gen_pool_destroy(poolm->private_data);  in pool_op_gen_destroy_poolmgr()
51  * tee_shm_pool_alloc_res_mem() - Create a shared memory pool from reserved
52  * memory range
53  * @priv_info:	Information for driver private shared memory pool
54  * @dmabuf_info: Information for dma-buf shared memory pool
72 	 * Create the pool for driver private shared memory  in tee_shm_pool_alloc_res_mem()
74 	rc = tee_shm_pool_mgr_alloc_res_mem(priv_info->vaddr, priv_info->paddr,  in tee_shm_pool_alloc_res_mem()
75 					    priv_info->size,  in tee_shm_pool_alloc_res_mem()
82 	 * Create the pool for dma_buf shared memory  in tee_shm_pool_alloc_res_mem()
84 	rc = tee_shm_pool_mgr_alloc_res_mem(dmabuf_info->vaddr,  in tee_shm_pool_alloc_res_mem()
85 					    dmabuf_info->paddr,  in tee_shm_pool_alloc_res_mem()
86 					    dmabuf_info->size, PAGE_SHIFT);  in tee_shm_pool_alloc_res_mem()
111 	const size_t page_mask = PAGE_SIZE - 1;  in tee_shm_pool_mgr_alloc_res_mem()
117 		return ERR_PTR(-EINVAL);  in tee_shm_pool_mgr_alloc_res_mem()
121 		return ERR_PTR(-ENOMEM);  in tee_shm_pool_mgr_alloc_res_mem()
123 	mgr->private_data = gen_pool_create(min_alloc_order, -1);  in tee_shm_pool_mgr_alloc_res_mem()
124 	if (!mgr->private_data) {  in tee_shm_pool_mgr_alloc_res_mem()
125 		rc = -ENOMEM;  in tee_shm_pool_mgr_alloc_res_mem()
129 	gen_pool_set_algo(mgr->private_data, gen_pool_best_fit, NULL);  in tee_shm_pool_mgr_alloc_res_mem()
130 	rc = gen_pool_add_virt(mgr->private_data, vaddr, paddr, size, -1);  in tee_shm_pool_mgr_alloc_res_mem()
132 		gen_pool_destroy(mgr->private_data);  in tee_shm_pool_mgr_alloc_res_mem()
136 	mgr->ops = &pool_ops_generic;  in tee_shm_pool_mgr_alloc_res_mem()
148 	return mgr && mgr->ops && mgr->ops->alloc && mgr->ops->free &&  in check_mgr_ops()
149 		mgr->ops->destroy_poolmgr;  in check_mgr_ops()
158 		return ERR_PTR(-EINVAL);  in tee_shm_pool_alloc()
162 		return ERR_PTR(-ENOMEM);  in tee_shm_pool_alloc()
164 	pool->private_mgr = priv_mgr;  in tee_shm_pool_alloc()
165 	pool->dma_buf_mgr = dmabuf_mgr;  in tee_shm_pool_alloc()
172  * tee_shm_pool_free() - Free a shared memory pool
173  * @pool:	The shared memory pool to free
175  * There must be no remaining shared memory allocated from this pool when
180 	if (pool->private_mgr)  in tee_shm_pool_free()
181 		tee_shm_pool_mgr_destroy(pool->private_mgr);  in tee_shm_pool_free()
182 	if (pool->dma_buf_mgr)  in tee_shm_pool_free()
183 		tee_shm_pool_mgr_destroy(pool->dma_buf_mgr);  in tee_shm_pool_free()