107 	dma_buffer *buffer = request->dma_buffer;  in scsi_copy_dma_buffer()  local
108 	const physical_entry *sg_list = buffer->sg_list_orig;  in scsi_copy_dma_buffer()
109 	uint32 num_vecs = buffer->sg_count_orig;  in scsi_copy_dma_buffer()
110 	uchar *buffer_data = buffer->address;  in scsi_copy_dma_buffer()
139 scsi_free_dma_buffer(dma_buffer *buffer)  in scsi_free_dma_buffer()  argument
141 	if (buffer->area > 0) {  in scsi_free_dma_buffer()
144 		delete_area(buffer->area);  in scsi_free_dma_buffer()
145 		buffer->area = 0;  in scsi_free_dma_buffer()
146 		buffer->size = 0;  in scsi_free_dma_buffer()
149 	if (buffer->sg_list_area > 0) {  in scsi_free_dma_buffer()
150 		delete_area(buffer->sg_list_area);  in scsi_free_dma_buffer()
151 		buffer->sg_list_area = 0;  in scsi_free_dma_buffer()
161 scsi_alloc_dma_buffer(dma_buffer *buffer, dma_params *dma_params, uint32 size)  in scsi_alloc_dma_buffer()  argument
164 	scsi_free_dma_buffer(buffer);  in scsi_alloc_dma_buffer()
201 		buffer->area = create_area_etc(B_SYSTEM_TEAM, "DMA buffer", size,  in scsi_alloc_dma_buffer()
204 			(void**)&buffer->address);  in scsi_alloc_dma_buffer()
206 		if (buffer->area < 0) {  in scsi_alloc_dma_buffer()
212 		buffer->size = size;  in scsi_alloc_dma_buffer()
215 		buffer->area = create_area("DMA buffer",  in scsi_alloc_dma_buffer()
216 			(void **)&buffer->address, B_ANY_KERNEL_ADDRESS, size,  in scsi_alloc_dma_buffer()
219 		if (buffer->area < 0) {  in scsi_alloc_dma_buffer()
225 		buffer->size = size;  in scsi_alloc_dma_buffer()
230 	size_t sg_list_size = buffer->size / B_PAGE_SIZE * sizeof( physical_entry );  in scsi_alloc_dma_buffer()
234 	buffer->sg_list_area = create_area("DMA buffer S/G table",  in scsi_alloc_dma_buffer()
235 		(void **)&buffer->sg_list, B_ANY_KERNEL_ADDRESS, sg_list_size,  in scsi_alloc_dma_buffer()
238 	if (buffer->sg_list_area < 0) {  in scsi_alloc_dma_buffer()
242 		delete_area(buffer->area);  in scsi_alloc_dma_buffer()
243 		buffer->area = 0;  in scsi_alloc_dma_buffer()
253 			buffer->address,  in scsi_alloc_dma_buffer()
254 			buffer->size  in scsi_alloc_dma_buffer()
258 			&vec, 1, 0, buffer->size,  in scsi_alloc_dma_buffer()
259 			buffer->sg_list, sg_list_entries, &buffer->sg_count,  in scsi_alloc_dma_buffer()
262 		if( res != B_OK || mapped_len != buffer->size ) {  in scsi_alloc_dma_buffer()
265 				mapped_len, buffer->size);  in scsi_alloc_dma_buffer()
274 scsi_free_dma_buffer_sg_orig(dma_buffer *buffer)  in scsi_free_dma_buffer_sg_orig()  argument
276 	if (buffer->sg_orig > 0) {  in scsi_free_dma_buffer_sg_orig()
277 		delete_area(buffer->sg_orig);  in scsi_free_dma_buffer_sg_orig()
278 		buffer->sg_orig = 0;  in scsi_free_dma_buffer_sg_orig()
279 		buffer->sg_count_max_orig = 0;  in scsi_free_dma_buffer_sg_orig()
287 scsi_alloc_dma_buffer_sg_orig(dma_buffer *buffer, size_t size)  in scsi_alloc_dma_buffer_sg_orig()  argument
290 	scsi_free_dma_buffer_sg_orig(buffer);  in scsi_alloc_dma_buffer_sg_orig()
294 	buffer->sg_orig = create_area("S/G to original data",  in scsi_alloc_dma_buffer_sg_orig()
295 		(void **)&buffer->sg_list_orig,  in scsi_alloc_dma_buffer_sg_orig()
298 	if (buffer->sg_orig < 0) {  in scsi_alloc_dma_buffer_sg_orig()
304 	buffer->sg_count_max_orig = size / sizeof(physical_entry);  in scsi_alloc_dma_buffer_sg_orig()
307 		buffer->sg_count_max_orig);  in scsi_alloc_dma_buffer_sg_orig()
332 scsi_dma_buffer_compose_sg_orig(dma_buffer *buffer, scsi_ccb *request)  in scsi_dma_buffer_compose_sg_orig()  argument
335 	if (buffer->sg_count_max_orig < request->sg_count) {  in scsi_dma_buffer_compose_sg_orig()
336 		if (!scsi_alloc_dma_buffer_sg_orig(buffer, request->sg_count))  in scsi_dma_buffer_compose_sg_orig()
342 	memcpy(buffer->sg_list_orig, request->sg_list,  in scsi_dma_buffer_compose_sg_orig()
345 	buffer->sg_count_orig = request->sg_count;  in scsi_dma_buffer_compose_sg_orig()
358 	dma_buffer *buffer;  in scsi_get_dma_buffer()  local
377 	buffer = &device->dma_buffer;  in scsi_get_dma_buffer()
379 	buffer->inuse = true;  in scsi_get_dma_buffer()
384 	request->dma_buffer = buffer;  in scsi_get_dma_buffer()
387 	if (buffer->size < request->data_length) {  in scsi_get_dma_buffer()
388 		if (!scsi_alloc_dma_buffer(buffer, &device->bus->dma_params,  in scsi_get_dma_buffer()
405 	buffer->orig_data = request->data;  in scsi_get_dma_buffer()
406 	buffer->orig_sg_list = request->sg_list;  in scsi_get_dma_buffer()
407 	buffer->orig_sg_count = request->sg_count;  in scsi_get_dma_buffer()
409 	request->data = buffer->address;  in scsi_get_dma_buffer()
410 	request->sg_list = buffer->sg_list;  in scsi_get_dma_buffer()
411 	request->sg_count = buffer->sg_count;  in scsi_get_dma_buffer()
425 	buffer->inuse = false;  in scsi_get_dma_buffer()
441 	dma_buffer *buffer = request->dma_buffer;  in scsi_release_dma_buffer()  local
453 	request->data = buffer->orig_data;  in scsi_release_dma_buffer()
454 	request->sg_list = buffer->orig_sg_list;  in scsi_release_dma_buffer()
455 	request->sg_count = buffer->orig_sg_count;  in scsi_release_dma_buffer()
460 	buffer->last_use = system_time();  in scsi_release_dma_buffer()
461 	buffer->inuse = false;  in scsi_release_dma_buffer()
478 	dma_buffer *buffer;  in scsi_dma_buffer_daemon()  local
482 	buffer = &device->dma_buffer;  in scsi_dma_buffer_daemon()
484 	if (!buffer->inuse  in scsi_dma_buffer_daemon()
485 		&& buffer->last_use - system_time() > SCSI_DMA_BUFFER_CLEANUP_DELAY) {  in scsi_dma_buffer_daemon()
486 		scsi_free_dma_buffer(buffer);  in scsi_dma_buffer_daemon()
487 		scsi_free_dma_buffer_sg_orig(buffer);  in scsi_dma_buffer_daemon()
495 scsi_dma_buffer_free(dma_buffer *buffer)  in scsi_dma_buffer_free()  argument
497 	scsi_free_dma_buffer(buffer);  in scsi_dma_buffer_free()
498 	scsi_free_dma_buffer_sg_orig(buffer);  in scsi_dma_buffer_free()
503 scsi_dma_buffer_init(dma_buffer *buffer)  in scsi_dma_buffer_init()  argument
505 	buffer->area = 0;  in scsi_dma_buffer_init()
506 	buffer->size = 0;  in scsi_dma_buffer_init()
507 	buffer->sg_orig = 0;  in scsi_dma_buffer_init()
508 	buffer->sg_count_max_orig = 0;  in scsi_dma_buffer_init()