73 	struct msc_window	*win;  member
153 	struct msc_window *win;  in msc_oldest_window()  local
166 	list_for_each_entry(win, &msc->win_list, entry) {  in msc_oldest_window()
167 		if (win->block[0].addr == win_addr)  in msc_oldest_window()
171 		if (msc_block_is_empty(win->block[0].bdesc))  in msc_oldest_window()
175 			return win;  in msc_oldest_window()
187 static unsigned int msc_win_oldest_block(struct msc_window *win)  in msc_win_oldest_block()  argument
190 	struct msc_block_desc *bdesc = win->block[0].bdesc;  in msc_win_oldest_block()
200 	for (blk = 0; blk < win->nr_blocks; blk++) {  in msc_win_oldest_block()
201 		bdesc = win->block[blk].bdesc;  in msc_win_oldest_block()
215 static inline bool msc_is_last_win(struct msc_window *win)  in msc_is_last_win()  argument
217 	return win->entry.next == &win->msc->win_list;  in msc_is_last_win()
226 static struct msc_window *msc_next_window(struct msc_window *win)  in msc_next_window()  argument
228 	if (msc_is_last_win(win))  in msc_next_window()
229 		return list_entry(win->msc->win_list.next, struct msc_window,  in msc_next_window()
232 	return list_entry(win->entry.next, struct msc_window, entry);  in msc_next_window()
237 	return iter->win->block[iter->block].bdesc;  in msc_iter_bdesc()
293 	iter->start_block = msc_win_oldest_block(iter->win);  in msc_iter_block_start()
316 	iter->win = iter->start_win;  in msc_iter_win_start()
326 	iter->win = msc_next_window(iter->win);  in msc_iter_win_advance()
329 	if (iter->win == iter->start_win) {  in msc_iter_win_advance()
357 	if (++iter->block == iter->win->nr_blocks)  in msc_iter_block_advance()
462 	struct msc_window *win;  in msc_buffer_clear_hw_header()  local
464 	list_for_each_entry(win, &msc->win_list, entry) {  in msc_buffer_clear_hw_header()
469 		for (blk = 0; blk < win->nr_blocks; blk++) {  in msc_buffer_clear_hw_header()
470 			struct msc_block_desc *bdesc = win->block[blk].bdesc;  in msc_buffer_clear_hw_header()
684 	struct msc_window *win;  in msc_buffer_win_alloc()  local
691 	win = kzalloc(offsetof(struct msc_window, block[nr_blocks]),  in msc_buffer_win_alloc()
693 	if (!win)  in msc_buffer_win_alloc()
700 		win->pgoff = prev->pgoff + prev->nr_blocks;  in msc_buffer_win_alloc()
704 		win->block[i].bdesc =  in msc_buffer_win_alloc()
706 					   &win->block[i].addr, GFP_KERNEL);  in msc_buffer_win_alloc()
708 		if (!win->block[i].bdesc)  in msc_buffer_win_alloc()
713 		set_memory_uc((unsigned long)win->block[i].bdesc, 1);  in msc_buffer_win_alloc()
717 	win->msc = msc;  in msc_buffer_win_alloc()
718 	win->nr_blocks = nr_blocks;  in msc_buffer_win_alloc()
721 		msc->base = win->block[0].bdesc;  in msc_buffer_win_alloc()
722 		msc->base_addr = win->block[0].addr;  in msc_buffer_win_alloc()
725 	list_add_tail(&win->entry, &msc->win_list);  in msc_buffer_win_alloc()
734 		set_memory_wb((unsigned long)win->block[i].bdesc, 1);  in msc_buffer_win_alloc()
737 				  win->block[i].bdesc, win->block[i].addr);  in msc_buffer_win_alloc()
739 	kfree(win);  in msc_buffer_win_alloc()
752 static void msc_buffer_win_free(struct msc *msc, struct msc_window *win)  in msc_buffer_win_free()  argument
756 	msc->nr_pages -= win->nr_blocks;  in msc_buffer_win_free()
758 	list_del(&win->entry);  in msc_buffer_win_free()
764 	for (i = 0; i < win->nr_blocks; i++) {  in msc_buffer_win_free()
765 		struct page *page = virt_to_page(win->block[i].bdesc);  in msc_buffer_win_free()
770 		set_memory_wb((unsigned long)win->block[i].bdesc, 1);  in msc_buffer_win_free()
772 		dma_free_coherent(msc_dev(win->msc)->parent->parent, PAGE_SIZE,  in msc_buffer_win_free()
773 				  win->block[i].bdesc, win->block[i].addr);  in msc_buffer_win_free()
776 	kfree(win);  in msc_buffer_win_free()
788 	struct msc_window *win, *next_win;  in msc_buffer_relink()  local
791 	list_for_each_entry(win, &msc->win_list, entry) {  in msc_buffer_relink()
799 		if (msc_is_last_win(win)) {  in msc_buffer_relink()
804 			next_win = list_entry(win->entry.next,  in msc_buffer_relink()
808 		for (blk = 0; blk < win->nr_blocks; blk++) {  in msc_buffer_relink()
809 			struct msc_block_desc *bdesc = win->block[blk].bdesc;  in msc_buffer_relink()
819 			if (blk == win->nr_blocks - 1) {  in msc_buffer_relink()
822 					win->block[0].addr >> PAGE_SHIFT;  in msc_buffer_relink()
825 					win->block[blk + 1].addr >> PAGE_SHIFT;  in msc_buffer_relink()
842 	struct msc_window *win, *iter;  in msc_buffer_multi_free()  local
844 	list_for_each_entry_safe(win, iter, &msc->win_list, entry)  in msc_buffer_multi_free()
845 		msc_buffer_win_free(msc, win);  in msc_buffer_multi_free()
987 	struct msc_window *win;  in msc_buffer_get_page()  local
992 	list_for_each_entry(win, &msc->win_list, entry)  in msc_buffer_get_page()
993 		if (pgoff >= win->pgoff && pgoff < win->pgoff + win->nr_blocks)  in msc_buffer_get_page()
999 	pgoff -= win->pgoff;  in msc_buffer_get_page()
1000 	return virt_to_page(win->block[pgoff].bdesc);  in msc_buffer_get_page()
1349 	struct msc_window *win;  in nr_pages_show()  local
1357 		list_for_each_entry(win, &msc->win_list, entry) {  in nr_pages_show()
1359 					   "%d%c", win->nr_blocks,  in nr_pages_show()
1360 					   msc_is_last_win(win) ? '\n' : ',');  in nr_pages_show()
1376 	unsigned long val, *win = NULL, *rewin;  in nr_pages_store()  local
1414 		rewin = krealloc(win, sizeof(*win) * nr_wins, GFP_KERNEL);  in nr_pages_store()
1416 			kfree(win);  in nr_pages_store()
1420 		win = rewin;  in nr_pages_store()
1421 		win[nr_wins - 1] = val;  in nr_pages_store()
1431 	ret = msc_buffer_alloc(msc, win, nr_wins);  in nr_pages_store()
1435 	kfree(win);  in nr_pages_store()