31 static void tpm2_flush_sessions(struct tpm_chip *chip, struct tpm_space *space)  in tpm2_flush_sessions()  argument
35 	for (i = 0; i < ARRAY_SIZE(space->session_tbl); i++) {  in tpm2_flush_sessions()
36 		if (space->session_tbl[i])  in tpm2_flush_sessions()
37 			tpm2_flush_context(chip, space->session_tbl[i]);  in tpm2_flush_sessions()
41 int tpm2_init_space(struct tpm_space *space)  in tpm2_init_space()  argument
43 	space->context_buf = kzalloc(PAGE_SIZE, GFP_KERNEL);  in tpm2_init_space()
44 	if (!space->context_buf)  in tpm2_init_space()
47 	space->session_buf = kzalloc(PAGE_SIZE, GFP_KERNEL);  in tpm2_init_space()
48 	if (space->session_buf == NULL) {  in tpm2_init_space()
49 		kfree(space->context_buf);  in tpm2_init_space()
56 void tpm2_del_space(struct tpm_chip *chip, struct tpm_space *space)  in tpm2_del_space()  argument
60 		tpm2_flush_sessions(chip, space);  in tpm2_del_space()
64 	kfree(space->context_buf);  in tpm2_del_space()
65 	kfree(space->session_buf);  in tpm2_del_space()
163 	struct tpm_space *space = &chip->work_space;  in tpm2_flush_space()  local
166 	for (i = 0; i < ARRAY_SIZE(space->context_tbl); i++)  in tpm2_flush_space()
167 		if (space->context_tbl[i] && ~space->context_tbl[i])  in tpm2_flush_space()
168 			tpm2_flush_context(chip, space->context_tbl[i]);  in tpm2_flush_space()
170 	tpm2_flush_sessions(chip, space);  in tpm2_flush_space()
175 	struct tpm_space *space = &chip->work_space;  in tpm2_load_space()  local
180 	for (i = 0, offset = 0; i < ARRAY_SIZE(space->context_tbl); i++) {  in tpm2_load_space()
181 		if (!space->context_tbl[i])  in tpm2_load_space()
185 		if (~space->context_tbl[i]) {  in tpm2_load_space()
190 		rc = tpm2_load_context(chip, space->context_buf, &offset,  in tpm2_load_space()
191 				       &space->context_tbl[i]);  in tpm2_load_space()
196 	for (i = 0, offset = 0; i < ARRAY_SIZE(space->session_tbl); i++) {  in tpm2_load_space()
199 		if (!space->session_tbl[i])  in tpm2_load_space()
202 		rc = tpm2_load_context(chip, space->session_buf,  in tpm2_load_space()
206 			space->session_tbl[i] = 0;  in tpm2_load_space()
211 		if (handle != space->session_tbl[i]) {  in tpm2_load_space()
221 static bool tpm2_map_to_phandle(struct tpm_space *space, void *handle)  in tpm2_map_to_phandle()  argument
228 	if (i >= ARRAY_SIZE(space->context_tbl) || !space->context_tbl[i])  in tpm2_map_to_phandle()
231 	phandle = space->context_tbl[i];  in tpm2_map_to_phandle()
238 	struct tpm_space *space = &chip->work_space;  in tpm2_map_command()  local
254 			if (!tpm2_map_to_phandle(space, handle))  in tpm2_map_command()
263 				    struct tpm_space *space,  in tpm_find_and_validate_cc()  argument
297 int tpm2_prepare_space(struct tpm_chip *chip, struct tpm_space *space, u8 *cmd,  in tpm2_prepare_space()  argument
303 	if (!space)  in tpm2_prepare_space()
306 	cc = tpm_find_and_validate_cc(chip, space, cmd, cmdsiz);  in tpm2_prepare_space()
310 	memcpy(&chip->work_space.context_tbl, &space->context_tbl,  in tpm2_prepare_space()
311 	       sizeof(space->context_tbl));  in tpm2_prepare_space()
312 	memcpy(&chip->work_space.session_tbl, &space->session_tbl,  in tpm2_prepare_space()
313 	       sizeof(space->session_tbl));  in tpm2_prepare_space()
314 	memcpy(chip->work_space.context_buf, space->context_buf, PAGE_SIZE);  in tpm2_prepare_space()
315 	memcpy(chip->work_space.session_buf, space->session_buf, PAGE_SIZE);  in tpm2_prepare_space()
335 	struct tpm_space *space = &chip->work_space;  in tpm2_add_session()  local
338 	for (i = 0; i < ARRAY_SIZE(space->session_tbl); i++)  in tpm2_add_session()
339 		if (space->session_tbl[i] == 0)  in tpm2_add_session()
342 	if (i == ARRAY_SIZE(space->session_tbl))  in tpm2_add_session()
345 	space->session_tbl[i] = handle;  in tpm2_add_session()
349 static u32 tpm2_map_to_vhandle(struct tpm_space *space, u32 phandle, bool alloc)  in tpm2_map_to_vhandle()  argument
353 	for (i = 0; i < ARRAY_SIZE(space->context_tbl); i++) {  in tpm2_map_to_vhandle()
355 			if (!space->context_tbl[i]) {  in tpm2_map_to_vhandle()
356 				space->context_tbl[i] = phandle;  in tpm2_map_to_vhandle()
359 		} else if (space->context_tbl[i] == phandle)  in tpm2_map_to_vhandle()
363 	if (i == ARRAY_SIZE(space->context_tbl))  in tpm2_map_to_vhandle()
372 	struct tpm_space *space = &chip->work_space;  in tpm2_map_response_header()  local
397 		vhandle = tpm2_map_to_vhandle(space, phandle, true);  in tpm2_map_response_header()
432 	struct tpm_space *space = &chip->work_space;  in tpm2_map_response_body()  local
462 			vhandle = tpm2_map_to_vhandle(space, phandle, false);  in tpm2_map_response_body()
485 	struct tpm_space *space = &chip->work_space;  in tpm2_save_space()  local
490 	for (i = 0, offset = 0; i < ARRAY_SIZE(space->context_tbl); i++) {  in tpm2_save_space()
491 		if (!(space->context_tbl[i] && ~space->context_tbl[i]))  in tpm2_save_space()
494 		rc = tpm2_save_context(chip, space->context_tbl[i],  in tpm2_save_space()
495 				       space->context_buf, PAGE_SIZE,  in tpm2_save_space()
498 			space->context_tbl[i] = 0;  in tpm2_save_space()
503 		tpm2_flush_context(chip, space->context_tbl[i]);  in tpm2_save_space()
504 		space->context_tbl[i] = ~0;  in tpm2_save_space()
507 	for (i = 0, offset = 0; i < ARRAY_SIZE(space->session_tbl); i++) {  in tpm2_save_space()
508 		if (!space->session_tbl[i])  in tpm2_save_space()
511 		rc = tpm2_save_context(chip, space->session_tbl[i],  in tpm2_save_space()
512 				       space->session_buf, PAGE_SIZE,  in tpm2_save_space()
517 			space->session_tbl[i] = 0;  in tpm2_save_space()
527 int tpm2_commit_space(struct tpm_chip *chip, struct tpm_space *space,  in tpm2_commit_space()  argument
533 	if (!space)  in tpm2_commit_space()
556 	memcpy(&space->context_tbl, &chip->work_space.context_tbl,  in tpm2_commit_space()
557 	       sizeof(space->context_tbl));  in tpm2_commit_space()
558 	memcpy(&space->session_tbl, &chip->work_space.session_tbl,  in tpm2_commit_space()
559 	       sizeof(space->session_tbl));  in tpm2_commit_space()
560 	memcpy(space->context_buf, chip->work_space.context_buf, PAGE_SIZE);  in tpm2_commit_space()
561 	memcpy(space->session_buf, chip->work_space.session_buf, PAGE_SIZE);  in tpm2_commit_space()