46 int dca_random_buffer(dca_t *dca, caddr_t buf, int len);
51 dca_rng(dca_t *dca, uchar_t *buf, size_t len, crypto_req_handle_t req)  in dca_rng()  argument
57 	if ((reqp = dca_getreq(dca, MCR2, 1)) == NULL) {  in dca_rng()
58 		dca_error(dca, "unable to allocate request for RNG");  in dca_rng()
73 	rv = dca_rngstart(dca, reqp);  in dca_rng()
84 dca_rngstart(dca_t *dca, dca_request_t *reqp)  in dca_rngstart()  argument
91 	if (dca->dca_flags & DCA_RNGSHA1) {  in dca_rngstart()
106 	    dca_sgcheck(dca, reqp->dr_out, DCA_SG_WALIGN)) {  in dca_rngstart()
143 	return (dca_start(dca, reqp, MCR2, 1));  in dca_rngstart()
212 dca_random_init(dca_t *dca)  in dca_random_init()  argument
215 	mutex_init(&dca->dca_random_lock, NULL, MUTEX_DRIVER, NULL);  in dca_random_init()
217 	if ((dca->dca_buf1 = kmem_alloc(RANDOM_BUFFER_SIZE, KM_SLEEP)) ==  in dca_random_init()
219 		mutex_destroy(&dca->dca_random_lock);  in dca_random_init()
223 	if ((dca->dca_buf2 = kmem_alloc(RANDOM_BUFFER_SIZE, KM_SLEEP)) ==  in dca_random_init()
225 		mutex_destroy(&dca->dca_random_lock);  in dca_random_init()
226 		kmem_free(dca->dca_buf1, RANDOM_BUFFER_SIZE);  in dca_random_init()
234 dca_random_fini(dca_t *dca)  in dca_random_fini()  argument
236 	kmem_free(dca->dca_buf1, RANDOM_BUFFER_SIZE);  in dca_random_fini()
237 	kmem_free(dca->dca_buf2, RANDOM_BUFFER_SIZE);  in dca_random_fini()
238 	dca->dca_buf1 = dca->dca_buf2 = dca->dca_buf_ptr = NULL;  in dca_random_fini()
239 	(void) mutex_destroy(&dca->dca_random_lock);  in dca_random_fini()
243 dca_random_buffer(dca_t *dca, caddr_t buf, int len)  in dca_random_buffer()  argument
249 	mutex_enter(&dca->dca_random_lock);  in dca_random_buffer()
251 	if (dca->dca_buf_ptr == NULL) {  in dca_random_buffer()
252 		if (dca->dca_buf1 == NULL || dca->dca_buf2 == NULL) {  in dca_random_buffer()
253 			mutex_exit(&dca->dca_random_lock);  in dca_random_buffer()
258 		if (dca_rng(dca, (uchar_t *)dca->dca_buf1, RANDOM_BUFFER_SIZE,  in dca_random_buffer()
260 			mutex_exit(&dca->dca_random_lock);  in dca_random_buffer()
264 		atomic_or_32(&dca->dca_random_filling, 0x1);  in dca_random_buffer()
267 		dca->dca_buf_ptr = dca->dca_buf2;  in dca_random_buffer()
268 		dca->dca_index = RANDOM_BUFFER_SIZE;  in dca_random_buffer()
273 		if (dca->dca_index >= RANDOM_BUFFER_SIZE) {  in dca_random_buffer()
275 			while (dca->dca_random_filling) {  in dca_random_buffer()
283 				mutex_exit(&dca->dca_random_lock);  in dca_random_buffer()
288 			if (dca->dca_buf_ptr == dca->dca_buf1) {  in dca_random_buffer()
289 				dca->dca_buf_ptr = dca->dca_buf2;  in dca_random_buffer()
290 				fill_buf = dca->dca_buf1;  in dca_random_buffer()
292 				dca->dca_buf_ptr = dca->dca_buf1;  in dca_random_buffer()
293 				fill_buf = dca->dca_buf2;  in dca_random_buffer()
296 			atomic_or_32(&dca->dca_random_filling, 0x1);  in dca_random_buffer()
297 			dca->dca_index = 0;  in dca_random_buffer()
299 			if ((rv = dca_rng(dca, (uchar_t *)fill_buf,  in dca_random_buffer()
301 				mutex_exit(&dca->dca_random_lock);  in dca_random_buffer()
306 		if (dca->dca_buf_ptr[dca->dca_index] != '\0')  in dca_random_buffer()
307 			buf[i++] = dca->dca_buf_ptr[dca->dca_index];  in dca_random_buffer()
309 		dca->dca_index++;  in dca_random_buffer()
312 	mutex_exit(&dca->dca_random_lock);  in dca_random_buffer()
319 dca_random_done(dca_t *dca)  in dca_random_done()  argument
322 	atomic_and_32(&dca->dca_random_filling, 0x0);  in dca_random_done()