1 // SPDX-License-Identifier: GPL-2.0-only
5  *  Copyright by Michał Mirosław, 2008-2009
14 		miter->consumed = 0;  in sg_dwiter_next()
22 	return miter->length == miter->consumed && !sg_dwiter_next(miter);  in sg_dwiter_is_at_end()
27 	size_t len, left = 4;  in sg_dwiter_read_buffer()  local
32 		len = min(miter->length - miter->consumed, left);  in sg_dwiter_read_buffer()
33 		memcpy(addr, miter->addr + miter->consumed, len);  in sg_dwiter_read_buffer()
34 		miter->consumed += len;  in sg_dwiter_read_buffer()
35 		left -= len;  in sg_dwiter_read_buffer()
38 		addr += len;  in sg_dwiter_read_buffer()
56 	size_t len;  in sg_dwiter_get_next_block()  local
61 	len = miter->length - miter->consumed;  in sg_dwiter_get_next_block()
63 	if (likely(len >= 4 && !needs_unaligned_copy(  in sg_dwiter_get_next_block()
64 			miter->addr + miter->consumed))) {  in sg_dwiter_get_next_block()
65 		*ptr = miter->addr + miter->consumed;  in sg_dwiter_get_next_block()
66 		miter->consumed += 4;  in sg_dwiter_get_next_block()
74  * cb710_sg_dwiter_read_next_block() - get next 32-bit word from sg buffer
78  *   Returns 32-bit word starting at byte pointed to by @miter@
88  *   32-bit word just read.
103 	size_t len, left = 4;  in sg_dwiter_write_slow()  local
107 		len = min(miter->length - miter->consumed, left);  in sg_dwiter_write_slow()
108 		memcpy(miter->addr, addr, len);  in sg_dwiter_write_slow()
109 		miter->consumed += len;  in sg_dwiter_write_slow()
110 		left -= len;  in sg_dwiter_write_slow()
113 		addr += len;  in sg_dwiter_write_slow()
118  * cb710_sg_dwiter_write_next_block() - write next 32-bit word to sg buffer
123  *   Writes 32-bit word starting at byte pointed to by @miter@