96 	struct msc_window	*win;  member
278 static inline struct scatterlist *msc_win_base_sg(struct msc_window *win)  in msc_win_base_sg()  argument
280 	return win->sgt->sgl;  in msc_win_base_sg()
283 static inline struct msc_block_desc *msc_win_base(struct msc_window *win)  in msc_win_base()  argument
285 	return sg_virt(msc_win_base_sg(win));  in msc_win_base()
288 static inline dma_addr_t msc_win_base_dma(struct msc_window *win)  in msc_win_base_dma()  argument
290 	return sg_dma_address(msc_win_base_sg(win));  in msc_win_base_dma()
294 msc_win_base_pfn(struct msc_window *win)  in msc_win_base_pfn()  argument
296 	return PFN_DOWN(msc_win_base_dma(win));  in msc_win_base_pfn()
304 static inline bool msc_is_last_win(struct msc_window *win)  in msc_is_last_win()  argument
306 	return win->entry.next == &win->msc->win_list;  in msc_is_last_win()
315 static struct msc_window *msc_next_window(struct msc_window *win)  in msc_next_window()  argument
317 	if (msc_is_last_win(win))  in msc_next_window()
318 		return list_first_entry(&win->msc->win_list, struct msc_window,  in msc_next_window()
321 	return list_next_entry(win, entry);  in msc_next_window()
324 static size_t msc_win_total_sz(struct msc_window *win)  in msc_win_total_sz()  argument
330 	for_each_sg(win->sgt->sgl, sg, win->nr_segs, blk) {  in msc_win_total_sz()
334 			return (size_t)win->nr_blocks << PAGE_SHIFT;  in msc_win_total_sz()
356 	struct msc_window *win;  in msc_find_window()  local
367 	list_for_each_entry(win, &msc->win_list, entry) {  in msc_find_window()
368 		if (win->sgt == sgt)  in msc_find_window()
372 		if (nonempty && msc_block_is_empty(msc_win_base(win)))  in msc_find_window()
376 			return win;  in msc_find_window()
393 	struct msc_window *win;  in msc_oldest_window()  local
398 	win = msc_find_window(msc, msc_next_window(msc->cur_win)->sgt, true);  in msc_oldest_window()
399 	if (win)  in msc_oldest_window()
400 		return win;  in msc_oldest_window()
411 static struct scatterlist *msc_win_oldest_sg(struct msc_window *win)  in msc_win_oldest_sg()  argument
415 	struct msc_block_desc *bdesc = msc_win_base(win);  in msc_win_oldest_sg()
419 		return msc_win_base_sg(win);  in msc_win_oldest_sg()
425 	for_each_sg(win->sgt->sgl, sg, win->nr_segs, blk) {  in msc_win_oldest_sg()
432 	return msc_win_base_sg(win);  in msc_win_oldest_sg()
485 	iter->start_block = msc_win_oldest_sg(iter->win);  in msc_iter_block_start()
508 	iter->win = iter->start_win;  in msc_iter_win_start()
518 	iter->win = msc_next_window(iter->win);  in msc_iter_win_advance()
521 	if (iter->win == iter->start_win) {  in msc_iter_win_advance()
550 		iter->block = msc_win_base_sg(iter->win);  in msc_iter_block_advance()
656 	struct msc_window *win;  in msc_buffer_clear_hw_header()  local
659 	list_for_each_entry(win, &msc->win_list, entry) {  in msc_buffer_clear_hw_header()
664 		for_each_sg(win->sgt->sgl, sg, win->nr_segs, blk) {  in msc_buffer_clear_hw_header()
709 static int msc_win_set_lockout(struct msc_window *win,  in msc_win_set_lockout()  argument
717 	if (!win->msc->mbuf)  in msc_win_set_lockout()
720 	spin_lock_irqsave(&win->lo_lock, flags);  in msc_win_set_lockout()
721 	old = win->lockout;  in msc_win_set_lockout()
728 	win->lockout = new;  in msc_win_set_lockout()
731 		atomic_inc(&win->msc->user_count);  in msc_win_set_lockout()
733 		atomic_dec(&win->msc->user_count);  in msc_win_set_lockout()
736 	spin_unlock_irqrestore(&win->lo_lock, flags);  in msc_win_set_lockout()
746 		dev_warn_ratelimited(msc_dev(win->msc),  in msc_win_set_lockout()
821 	struct msc_window *win = msc->cur_win;  in msc_disable()  local
827 		msc_win_set_lockout(win, WIN_INUSE, WIN_LOCKED);  in msc_disable()
849 		msc->mbuf->ready(msc->mbuf_priv, win->sgt,  in msc_disable()
850 				 msc_win_total_sz(win));  in msc_disable()
993 static int __msc_buffer_win_alloc(struct msc_window *win,  in __msc_buffer_win_alloc()  argument
1000 	ret = sg_alloc_table(win->sgt, nr_segs, GFP_KERNEL);  in __msc_buffer_win_alloc()
1004 	for_each_sg(win->sgt->sgl, sg_ptr, nr_segs, i) {  in __msc_buffer_win_alloc()
1005 		block = dma_alloc_coherent(msc_dev(win->msc)->parent->parent,  in __msc_buffer_win_alloc()
1017 	for_each_sg(win->sgt->sgl, sg_ptr, i, ret)  in __msc_buffer_win_alloc()
1018 		dma_free_coherent(msc_dev(win->msc)->parent->parent, PAGE_SIZE,  in __msc_buffer_win_alloc()
1021 	sg_free_table(win->sgt);  in __msc_buffer_win_alloc()
1027 static void msc_buffer_set_uc(struct msc_window *win, unsigned int nr_segs)  in msc_buffer_set_uc()  argument
1032 	for_each_sg(win->sgt->sgl, sg_ptr, nr_segs, i) {  in msc_buffer_set_uc()
1039 static void msc_buffer_set_wb(struct msc_window *win)  in msc_buffer_set_wb()  argument
1044 	for_each_sg(win->sgt->sgl, sg_ptr, win->nr_segs, i) {  in msc_buffer_set_wb()
1052 msc_buffer_set_uc(struct msc_window *win, unsigned int nr_segs) {}  in msc_buffer_set_uc()  argument
1053 static inline void msc_buffer_set_wb(struct msc_window *win) {}  in msc_buffer_set_wb()  argument
1078 	struct msc_window *win;  in msc_buffer_win_alloc()  local
1084 	win = kzalloc(sizeof(*win), GFP_KERNEL);  in msc_buffer_win_alloc()
1085 	if (!win)  in msc_buffer_win_alloc()
1088 	win->msc = msc;  in msc_buffer_win_alloc()
1089 	win->sgt = &win->_sgt;  in msc_buffer_win_alloc()
1090 	win->lockout = WIN_READY;  in msc_buffer_win_alloc()
1091 	spin_lock_init(&win->lo_lock);  in msc_buffer_win_alloc()
1098 		win->pgoff = prev->pgoff + prev->nr_blocks;  in msc_buffer_win_alloc()
1102 		ret = msc->mbuf->alloc_window(msc->mbuf_priv, &win->sgt,  in msc_buffer_win_alloc()
1105 		ret = __msc_buffer_win_alloc(win, nr_blocks);  in msc_buffer_win_alloc()
1110 	msc_buffer_set_uc(win, ret);  in msc_buffer_win_alloc()
1112 	win->nr_segs = ret;  in msc_buffer_win_alloc()
1113 	win->nr_blocks = nr_blocks;  in msc_buffer_win_alloc()
1116 		msc->base = msc_win_base(win);  in msc_buffer_win_alloc()
1117 		msc->base_addr = msc_win_base_dma(win);  in msc_buffer_win_alloc()
1118 		msc->cur_win = win;  in msc_buffer_win_alloc()
1121 	list_add_tail(&win->entry, &msc->win_list);  in msc_buffer_win_alloc()
1127 	kfree(win);  in msc_buffer_win_alloc()
1132 static void __msc_buffer_win_free(struct msc *msc, struct msc_window *win)  in __msc_buffer_win_free()  argument
1137 	for_each_sg(win->sgt->sgl, sg, win->nr_segs, i) {  in __msc_buffer_win_free()
1141 		dma_free_coherent(msc_dev(win->msc)->parent->parent, PAGE_SIZE,  in __msc_buffer_win_free()
1144 	sg_free_table(win->sgt);  in __msc_buffer_win_free()
1155 static void msc_buffer_win_free(struct msc *msc, struct msc_window *win)  in msc_buffer_win_free()  argument
1157 	msc->nr_pages -= win->nr_blocks;  in msc_buffer_win_free()
1159 	list_del(&win->entry);  in msc_buffer_win_free()
1165 	msc_buffer_set_wb(win);  in msc_buffer_win_free()
1168 		msc->mbuf->free_window(msc->mbuf_priv, win->sgt);  in msc_buffer_win_free()
1170 		__msc_buffer_win_free(msc, win);  in msc_buffer_win_free()
1172 	kfree(win);  in msc_buffer_win_free()
1184 	struct msc_window *win, *next_win;  in msc_buffer_relink()  local
1187 	list_for_each_entry(win, &msc->win_list, entry) {  in msc_buffer_relink()
1196 		if (msc_is_last_win(win)) {  in msc_buffer_relink()
1201 			next_win = list_next_entry(win, entry);  in msc_buffer_relink()
1204 		for_each_sg(win->sgt->sgl, sg, win->nr_segs, blk) {  in msc_buffer_relink()
1215 			if (blk == win->nr_segs - 1) {  in msc_buffer_relink()
1217 				bdesc->next_blk = msc_win_base_pfn(win);  in msc_buffer_relink()
1238 	struct msc_window *win, *iter;  in msc_buffer_multi_free()  local
1240 	list_for_each_entry_safe(win, iter, &msc->win_list, entry)  in msc_buffer_multi_free()
1241 		msc_buffer_win_free(msc, win);  in msc_buffer_multi_free()
1383 	struct msc_window *win;  in msc_buffer_get_page()  local
1390 	list_for_each_entry(win, &msc->win_list, entry)  in msc_buffer_get_page()
1391 		if (pgoff >= win->pgoff && pgoff < win->pgoff + win->nr_blocks)  in msc_buffer_get_page()
1397 	pgoff -= win->pgoff;  in msc_buffer_get_page()
1399 	for_each_sg(win->sgt->sgl, sg, win->nr_segs, blk) {  in msc_buffer_get_page()
1724 	struct msc_window *win;  in intel_th_msc_window_unlock()  local
1729 	win = msc_find_window(msc, sgt, false);  in intel_th_msc_window_unlock()
1730 	if (!win)  in intel_th_msc_window_unlock()
1733 	msc_win_set_lockout(win, WIN_LOCKED, WIN_READY);  in intel_th_msc_window_unlock()
1734 	if (msc->switch_on_unlock == win) {  in intel_th_msc_window_unlock()
1753 	struct msc_window *win, *next_win;  in intel_th_msc_interrupt()  local
1769 	win = msc->cur_win;  in intel_th_msc_interrupt()
1770 	if (!win)  in intel_th_msc_interrupt()
1772 	next_win = msc_next_window(win);  in intel_th_msc_interrupt()
1787 	msc_win_set_lockout(win, WIN_INUSE, WIN_LOCKED);  in intel_th_msc_interrupt()
1792 		msc->mbuf->ready(msc->mbuf_priv, win->sgt,  in intel_th_msc_interrupt()
1793 				 msc_win_total_sz(win));  in intel_th_msc_interrupt()
1950 	struct msc_window *win;  in nr_pages_show()  local
1958 		list_for_each_entry(win, &msc->win_list, entry) {  in nr_pages_show()
1960 					   "%d%c", win->nr_blocks,  in nr_pages_show()
1961 					   msc_is_last_win(win) ? '\n' : ',');  in nr_pages_show()
1977 	unsigned long val, *win = NULL, *rewin;  in nr_pages_store()  local
2015 		rewin = krealloc(win, sizeof(*win) * nr_wins, GFP_KERNEL);  in nr_pages_store()
2017 			kfree(win);  in nr_pages_store()
2021 		win = rewin;  in nr_pages_store()
2022 		win[nr_wins - 1] = val;  in nr_pages_store()
2033 	ret = msc_buffer_alloc(msc, win, nr_wins);  in nr_pages_store()
2037 	kfree(win);  in nr_pages_store()