busses/usb/ohci.cpp

519 		uint32 descriptor = _ReadReg(OHCI_RH_DESCRIPTOR_A);
520 		numberOfPorts = OHCI_RH_GET_PORT_COUNT(descriptor);
709 					ohci_isochronous_td *descriptor
711 					while (descriptor) {
713 							descriptor->flags);
715 							OHCI_ITD_GET_FRAME_COUNT(descriptor->flags));
716 						if (descriptor
721 						descriptor
723 							descriptor->next_done_descriptor;
1025 	// the current tail will become the first descriptor
1034 	// even the last and the first descriptor might be the same
1081 	// the current tail will become the first descriptor
1087 	// the last and the first descriptor might be the same
1142 			ohci_general_td *descriptor = transfer->first_descriptor;
1173 			while (descriptor && !transfer->canceled) {
1174 				uint32 status = OHCI_TD_GET_CONDITION_CODE(descriptor->flags);
1177 					TRACE("td %p still active\n", descriptor);
1186 						// descriptor has passed (we don't know if the endpoint
1199 						TRACE("td %p active with error\n", descriptor);
1205 				TRACE("td %p done\n", descriptor);
1207 				if (descriptor == transfer->last_descriptor
1208 					|| descriptor->buffer_physical != 0) {
1215 				descriptor
1216 					= (ohci_general_td *)descriptor->next_logical_descriptor;
1256 			// break the descriptor chain on the last descriptor
1334 		ohci_isochronous_td *descriptor
1336 		while (descriptor) {
1337 			if (OHCI_TD_GET_CONDITION_CODE(descriptor->flags)
1339 				TRACE("ITD %p still active\n", descriptor);
1344 			if (descriptor == (ohci_isochronous_td*)transfer->last_descriptor) {
1346 				descriptor = (ohci_isochronous_td *)transfer->first_descriptor;
1350 			descriptor
1351 				= (ohci_isochronous_td *)descriptor->next_done_descriptor;
1354 		while (descriptor) {
1355 			uint32 status = OHCI_TD_GET_CONDITION_CODE(descriptor->flags);
1370 			uint32 frameCount = OHCI_ITD_GET_FRAME_COUNT(descriptor->flags);
1375 				uint16 offset = descriptor->offset[OHCI_ITD_OFFSET_IDX(i)];
1392 			uint16 frame = OHCI_ITD_GET_STARTING_FRAME(descriptor->flags);
1394 				OHCI_ITD_GET_FRAME_COUNT(descriptor->flags));
1396 			TRACE("ITD %p done\n", descriptor);
1398 			if (descriptor == (ohci_isochronous_td*)transfer->last_descriptor)
1401 			descriptor
1402 				= (ohci_isochronous_td *)descriptor->next_done_descriptor;
1426 	// break the descriptor chain on the last descriptor
1466 		TRACE_ERROR("failed to allocate setup descriptor\n");
1477 		TRACE_ERROR("failed to allocate status descriptor\n");
1530 	// Add the descriptor chain to the endpoint
1556 	// Apply data toggle to the first descriptor (the others will use the carry)
1561 	// Set the last descriptor to generate an interrupt
1597 	// Add the descriptor chain to the endpoint
1628 	// Set the last descriptor to generate an interrupt
1633 	// If direction is out set every descriptor data
1652 	// Add the descriptor chain to the endpoint
1666 	// fill in the information of the first descriptor into the current tail
1676 	// the first descriptor becomes the new tail
1706 	// fill in the information of the first descriptor into the current tail
1718 	// the first descriptor becomes the new tail
1754 	// endpoint head pointer might point somewhere into the descriptor chain
1757 	// find the head to point to somewhere into the descriptor chain then
1763 	ohci_general_td *descriptor = transfer->first_descriptor;
1764 	while (descriptor) {
1766 			== descriptor->physical_address) {
1767 			// This descriptor caused the halt. Advance the head pointer. This
1778 		descriptor = (ohci_general_td *)descriptor->next_logical_descriptor;
1798 		TRACE_ERROR("failed to allocate endpoint descriptor\n");
1909 	// Create (necessary) tail descriptor
1984 	ohci_general_td *descriptor;
1987 	if (fStack->AllocateChunk((void **)&descriptor, &physicalAddress,
1989 		TRACE_ERROR("failed to allocate general descriptor\n");
1993 	descriptor->physical_address = (uint32)physicalAddress;
1994 	descriptor->next_physical_descriptor = 0;
1995 	descriptor->next_logical_descriptor = NULL;
1996 	descriptor->buffer_size = bufferSize;
1998 		descriptor->buffer_physical = 0;
1999 		descriptor->buffer_logical = NULL;
2000 		descriptor->last_physical_byte_address = 0;
2001 		return descriptor;
2004 	if (fStack->AllocateChunk(&descriptor->buffer_logical,
2007 		fStack->FreeChunk(descriptor, descriptor->physical_address,
2011 	descriptor->buffer_physical = physicalAddress;
2013 	descriptor->last_physical_byte_address
2014 		= descriptor->buffer_physical + bufferSize - 1;
2015 	return descriptor;
2020 OHCI::_FreeGeneralDescriptor(ohci_general_td *descriptor)
2022 	if (!descriptor)
2025 	if (descriptor->buffer_logical) {
2026 		fStack->FreeChunk(descriptor->buffer_logical,
2027 			descriptor->buffer_physical, descriptor->buffer_size);
2030 	fStack->FreeChunk((void *)descriptor, descriptor->physical_address,
2047 		ohci_general_td *descriptor = _CreateGeneralDescriptor(
2050 		if (!descriptor) {
2055 		descriptor->flags = direction
2063 			_LinkDescriptors(lastDescriptor, descriptor);
2066 		lastDescriptor = descriptor;
2068 			firstDescriptor = descriptor;
2094 	ohci_isochronous_td *descriptor = NULL;
2097 	if (fStack->AllocateChunk((void **)&descriptor, &physicalAddress,
2099 		TRACE_ERROR("failed to allocate isochronous descriptor\n");
2103 	descriptor->physical_address = (uint32)physicalAddress;
2104 	descriptor->next_physical_descriptor = 0;
2105 	descriptor->next_logical_descriptor = NULL;
2106 	descriptor->next_done_descriptor = NULL;
2107 	descriptor->buffer_size = bufferSize;
2109 		descriptor->buffer_page_byte_0 = 0;
2110 		descriptor->buffer_logical = NULL;
2111 		descriptor->last_byte_address = 0;
2112 		return descriptor;
2115 	if (fStack->AllocateChunk(&descriptor->buffer_logical,
2118 		fStack->FreeChunk(descriptor, descriptor->physical_address,
2122 	descriptor->buffer_page_byte_0 = (uint32)physicalAddress;
2123 	descriptor->last_byte_address
2124 		= descriptor->buffer_page_byte_0 + bufferSize - 1;
2126 	return descriptor;
2131 OHCI::_FreeIsochronousDescriptor(ohci_isochronous_td *descriptor)
2133 	if (!descriptor)
2136 	if (descriptor->buffer_logical) {
2137 		fStack->FreeChunk(descriptor->buffer_logical,
2138 			descriptor->buffer_page_byte_0, descriptor->buffer_size);
2141 	fStack->FreeChunk((void *)descriptor, descriptor->physical_address,
2182 	// The entry where to start inserting the first Isochronous descriptor
2212 		ohci_isochronous_td *descriptor = _CreateIsochronousDescriptor(
2215 		if (!descriptor) {
2222 		uint16 pageOffset = descriptor->buffer_page_byte_0 & 0xfff;
2223 		descriptor->buffer_page_byte_0 &= ~0xfff;
2225 			descriptor->offset[OHCI_ITD_OFFSET_IDX(i)]
2229 		descriptor->flags = OHCI_ITD_SET_FRAME_COUNT(frameCount)
2236 			descriptor->last_byte_address
2241 			_LinkIsochronousDescriptors(lastDescriptor, descriptor, descriptor);
2243 		lastDescriptor = descriptor;
2245 			firstDescriptor = descriptor;
2308 					TRACE("wrote descriptor chain (%ld bytes, no"
2328 	TRACE("wrote descriptor chain (%ld bytes)\n", actualLength);
2365 					TRACE("wrote descriptor chain (%ld bytes, no"
2385 	TRACE("wrote descriptor chain (%ld bytes)\n", actualLength);
2429 					TRACE("read descriptor chain (%ld bytes, no more vectors)\n",
2446 	TRACE("read descriptor chain (%ld bytes)\n", actualLength);
2483 						TRACE("read descriptor chain (%ld bytes, "
2501 	TRACE("read descriptor chain (%ld bytes)\n", actualLength);
2665 		dprintf("descriptor %p\n", topDescriptor);
2684 		dprintf("iso.descriptor %p\n", topDescriptor);