~hc/RK356X_SDK_RELEASE.git

..	..	@@ -1,7 +1,7 @@
1	1	/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
2	2	/*
3	3	*
4		- * (C) COPYRIGHT 2012-2014, 2016-2018, 2020-2021 ARM Limited. All rights reserved.
	4	+ * (C) COPYRIGHT 2012-2014, 2016-2018, 2020-2022 ARM Limited. All rights reserved.
5	5	*
6	6	* This program is free software and is provided to you under the terms of the
7	7	* GNU General Public License version 2 as published by the Free Software
..	..	@@ -47,6 +47,8 @@
47	47	#define HUGE_PAGE (1u << 0)
48	48	#define HUGE_HEAD (1u << 1)
49	49	#define FROM_PARTIAL (1u << 2)
	50	+
	51	+#define NUM_4K_PAGES_IN_2MB_PAGE (SZ_2M / SZ_4K)
50	52
51	53	/*
52	54	* Note: if macro for converting physical address to page is not defined
..	..	@@ -158,4 +160,20 @@
158	160	return t.tagged_addr & FROM_PARTIAL;
159	161	}
160	162
	163	+/**
	164	+ * index_in_large_page() - Get index of a 4KB page within a 2MB page which
	165	+ * wasn't split to be used partially.
	166	+ *
	167	+ * @t: Tagged physical address of the physical 4KB page that lies within
	168	+ * the large (or 2 MB) physical page.
	169	+ *
	170	+ * Return: Index of the 4KB page within a 2MB page
	171	+ */
	172	+static inline unsigned int index_in_large_page(struct tagged_addr t)
	173	+{
	174	+ WARN_ON(!is_huge(t));
	175	+
	176	+ return (PFN_DOWN(as_phys_addr_t(t)) & (NUM_4K_PAGES_IN_2MB_PAGE - 1));
	177	+}
	178	+
161	179	#endif /* _KBASE_LOWLEVEL_H */