1 // SPDX-License-Identifier: GPL-2.0-only
3  *  linux/arch/arm/mm/copypage-xsc3.S
7  * Adapted for 3rd gen XScale core, no more mini-dcache
15  *  We don't really want write-allocate cache behaviour for these functions
16  *  since that will just eat through 8K of the cache.
23  * can safely ignore them - break_cow() will flush them out of the cache
32 .arch xscale					\n\  in xsc3_mc_copy_user_page()
33 	pld	[%1, #0]			\n\  in xsc3_mc_copy_user_page()
34 	pld	[%1, #32]			\n\  in xsc3_mc_copy_user_page()
35 1:	pld	[%1, #64]			\n\  in xsc3_mc_copy_user_page()
36 	pld	[%1, #96]			\n\  in xsc3_mc_copy_user_page()
37 						\n\  in xsc3_mc_copy_user_page()
38 2:	ldrd	r2, r3, [%1], #8		\n\  in xsc3_mc_copy_user_page()
39 	ldrd	r4, r5, [%1], #8		\n\  in xsc3_mc_copy_user_page()
40 	mcr	p15, 0, %0, c7, c6, 1		@ invalidate\n\  in xsc3_mc_copy_user_page()
41 	strd	r2, r3, [%0], #8		\n\  in xsc3_mc_copy_user_page()
42 	ldrd	r2, r3, [%1], #8		\n\  in xsc3_mc_copy_user_page()
43 	strd	r4, r5, [%0], #8		\n\  in xsc3_mc_copy_user_page()
44 	ldrd	r4, r5, [%1], #8		\n\  in xsc3_mc_copy_user_page()
45 	strd	r2, r3, [%0], #8		\n\  in xsc3_mc_copy_user_page()
46 	strd	r4, r5, [%0], #8		\n\  in xsc3_mc_copy_user_page()
47 	ldrd	r2, r3, [%1], #8		\n\  in xsc3_mc_copy_user_page()
48 	ldrd	r4, r5, [%1], #8		\n\  in xsc3_mc_copy_user_page()
49 	mcr	p15, 0, %0, c7, c6, 1		@ invalidate\n\  in xsc3_mc_copy_user_page()
50 	strd	r2, r3, [%0], #8		\n\  in xsc3_mc_copy_user_page()
51 	ldrd	r2, r3, [%1], #8		\n\  in xsc3_mc_copy_user_page()
52 	subs	%2, %2, #1			\n\  in xsc3_mc_copy_user_page()
53 	strd	r4, r5, [%0], #8		\n\  in xsc3_mc_copy_user_page()
54 	ldrd	r4, r5, [%1], #8		\n\  in xsc3_mc_copy_user_page()
55 	strd	r2, r3, [%0], #8		\n\  in xsc3_mc_copy_user_page()
56 	strd	r4, r5, [%0], #8		\n\  in xsc3_mc_copy_user_page()
57 	bgt	1b				\n\  in xsc3_mc_copy_user_page()
60 	: "2" (PAGE_SIZE / 64 - 1)  in xsc3_mc_copy_user_page()
84 .arch xscale					\n\  in xsc3_mc_clear_user_highpage()
85 	mov	r1, %2				\n\  in xsc3_mc_clear_user_highpage()
86 	mov	r2, #0				\n\  in xsc3_mc_clear_user_highpage()
87 	mov	r3, #0				\n\  in xsc3_mc_clear_user_highpage()
88 1:	mcr	p15, 0, %0, c7, c6, 1		@ invalidate line\n\  in xsc3_mc_clear_user_highpage()
89 	strd	r2, r3, [%0], #8		\n\  in xsc3_mc_clear_user_highpage()
90 	strd	r2, r3, [%0], #8		\n\  in xsc3_mc_clear_user_highpage()
91 	strd	r2, r3, [%0], #8		\n\  in xsc3_mc_clear_user_highpage()
92 	strd	r2, r3, [%0], #8		\n\  in xsc3_mc_clear_user_highpage()
93 	subs	r1, r1, #1			\n\  in xsc3_mc_clear_user_highpage()
94 	bne	1b"  in xsc3_mc_clear_user_highpage()