Merge branch 'linus' into timers/nohz

1 files changed, 216 insertions, 26 deletions

diff --git a/arch/arm/mm/proc-feroceon.S b/arch/arm/mm/proc-feroceon.S
index a02c171..f2e5884 100644
--- a/arch/arm/mm/proc-feroceon.S
+++ b/arch/arm/mm/proc-feroceon.S
@@ -44,11 +44,31 @@
  */
 #define CACHE_DLINESIZE	32
 
+	.bss
+	.align 3
+__cache_params_loc:
+	.space	8
+
 	.text
+__cache_params:
+	.word	__cache_params_loc
+
 /*
  * cpu_feroceon_proc_init()
  */
 ENTRY(cpu_feroceon_proc_init)
+	mrc	p15, 0, r0, c0, c0, 1		@ read cache type register
+	ldr	r1, __cache_params
+	mov	r2, #(16 << 5)
+	tst	r0, #(1 << 16)			@ get way
+	mov	r0, r0, lsr #18			@ get cache size order
+	movne	r3, #((4 - 1) << 30)		@ 4-way
+	and	r0, r0, #0xf
+	moveq	r3, #0				@ 1-way
+	mov	r2, r2, lsl r0			@ actual cache size
+	movne	r2, r2, lsr #2			@ turned into # of sets
+	sub	r2, r2, #(1 << 5)
+	stmia	r1, {r2, r3}
 	mov	pc, lr
 
 /*
@@ -59,6 +79,13 @@ ENTRY(cpu_feroceon_proc_fin)
 	mov	ip, #PSR_F_BIT | PSR_I_BIT | SVC_MODE
 	msr	cpsr_c, ip
 	bl	feroceon_flush_kern_cache_all
+
+#if defined(CONFIG_CACHE_FEROCEON_L2) && !defined(CONFIG_L2_CACHE_WRITETHROUGH)
+	mov	r0, #0
+	mcr	p15, 1, r0, c15, c9, 0		@ clean L2
+	mcr	p15, 0, r0, c7, c10, 4		@ drain WB
+#endif
+
 	mrc	p15, 0, r0, c1, c0, 0		@ ctrl register
 	bic	r0, r0, #0x1000			@ ...i............
 	bic	r0, r0, #0x000e			@ ............wca.
@@ -117,11 +144,19 @@ ENTRY(feroceon_flush_user_cache_all)
  */
 ENTRY(feroceon_flush_kern_cache_all)
 	mov	r2, #VM_EXEC
-	mov	ip, #0
+
 __flush_whole_cache:
-1:	mrc	p15, 0, r15, c7, c14, 3 	@ test,clean,invalidate
-	bne	1b
+	ldr	r1, __cache_params
+	ldmia	r1, {r1, r3}
+1:	orr	ip, r1, r3
+2:	mcr	p15, 0, ip, c7, c14, 2		@ clean + invalidate D set/way
+	subs	ip, ip, #(1 << 30)		@ next way
+	bcs	2b
+	subs	r1, r1, #(1 << 5)		@ next set
+	bcs	1b
+
 	tst	r2, #VM_EXEC
+	mov	ip, #0
 	mcrne	p15, 0, ip, c7, c5, 0		@ invalidate I cache
 	mcrne	p15, 0, ip, c7, c10, 4		@ drain WB
 	mov	pc, lr
@@ -138,7 +173,6 @@ __flush_whole_cache:
  */
 	.align	5
 ENTRY(feroceon_flush_user_cache_range)
-	mov	ip, #0
 	sub	r3, r1, r0			@ calculate total size
 	cmp	r3, #CACHE_DLIMIT
 	bgt	__flush_whole_cache
@@ -152,6 +186,7 @@ ENTRY(feroceon_flush_user_cache_range)
 	cmp	r0, r1
 	blo	1b
 	tst	r2, #VM_EXEC
+	mov	ip, #0
 	mcrne	p15, 0, ip, c7, c10, 4		@ drain WB
 	mov	pc, lr
 
@@ -209,6 +244,20 @@ ENTRY(feroceon_flush_kern_dcache_page)
 	mcr	p15, 0, r0, c7, c10, 4		@ drain WB
 	mov	pc, lr
 
+	.align	5
+ENTRY(feroceon_range_flush_kern_dcache_page)
+	mrs	r2, cpsr
+	add	r1, r0, #PAGE_SZ - CACHE_DLINESIZE	@ top addr is inclusive
+	orr	r3, r2, #PSR_I_BIT
+	msr	cpsr_c, r3			@ disable interrupts
+	mcr	p15, 5, r0, c15, c15, 0		@ D clean/inv range start
+	mcr	p15, 5, r1, c15, c15, 1		@ D clean/inv range top
+	msr	cpsr_c, r2			@ restore interrupts
+	mov	r0, #0
+	mcr	p15, 0, r0, c7, c5, 0		@ invalidate I cache
+	mcr	p15, 0, r0, c7, c10, 4		@ drain WB
+	mov	pc, lr
+
 /*
  *	dma_inv_range(start, end)
  *
@@ -225,10 +274,10 @@ ENTRY(feroceon_flush_kern_dcache_page)
 	.align	5
 ENTRY(feroceon_dma_inv_range)
 	tst	r0, #CACHE_DLINESIZE - 1
+	bic	r0, r0, #CACHE_DLINESIZE - 1
 	mcrne	p15, 0, r0, c7, c10, 1		@ clean D entry
 	tst	r1, #CACHE_DLINESIZE - 1
 	mcrne	p15, 0, r1, c7, c10, 1		@ clean D entry
-	bic	r0, r0, #CACHE_DLINESIZE - 1
 1:	mcr	p15, 0, r0, c7, c6, 1		@ invalidate D entry
 	add	r0, r0, #CACHE_DLINESIZE
 	cmp	r0, r1
@@ -236,6 +285,22 @@ ENTRY(feroceon_dma_inv_range)
 	mcr	p15, 0, r0, c7, c10, 4		@ drain WB
 	mov	pc, lr
 
+	.align	5
+ENTRY(feroceon_range_dma_inv_range)
+	mrs	r2, cpsr
+	tst	r0, #CACHE_DLINESIZE - 1
+	mcrne	p15, 0, r0, c7, c10, 1		@ clean D entry
+	tst	r1, #CACHE_DLINESIZE - 1
+	mcrne	p15, 0, r1, c7, c10, 1		@ clean D entry
+	cmp	r1, r0
+	subne	r1, r1, #1			@ top address is inclusive
+	orr	r3, r2, #PSR_I_BIT
+	msr	cpsr_c, r3			@ disable interrupts
+	mcr	p15, 5, r0, c15, c14, 0		@ D inv range start
+	mcr	p15, 5, r1, c15, c14, 1		@ D inv range top
+	msr	cpsr_c, r2			@ restore interrupts
+	mov	pc, lr
+
 /*
  *	dma_clean_range(start, end)
  *
@@ -256,6 +321,19 @@ ENTRY(feroceon_dma_clean_range)
 	mcr	p15, 0, r0, c7, c10, 4		@ drain WB
 	mov	pc, lr
 
+	.align	5
+ENTRY(feroceon_range_dma_clean_range)
+	mrs	r2, cpsr
+	cmp	r1, r0
+	subne	r1, r1, #1			@ top address is inclusive
+	orr	r3, r2, #PSR_I_BIT
+	msr	cpsr_c, r3			@ disable interrupts
+	mcr	p15, 5, r0, c15, c13, 0		@ D clean range start
+	mcr	p15, 5, r1, c15, c13, 1		@ D clean range top
+	msr	cpsr_c, r2			@ restore interrupts
+	mcr	p15, 0, r0, c7, c10, 4		@ drain WB
+	mov	pc, lr
+
 /*
  *	dma_flush_range(start, end)
  *
@@ -274,6 +352,19 @@ ENTRY(feroceon_dma_flush_range)
 	mcr	p15, 0, r0, c7, c10, 4		@ drain WB
 	mov	pc, lr
 
+	.align	5
+ENTRY(feroceon_range_dma_flush_range)
+	mrs	r2, cpsr
+	cmp	r1, r0
+	subne	r1, r1, #1			@ top address is inclusive
+	orr	r3, r2, #PSR_I_BIT
+	msr	cpsr_c, r3			@ disable interrupts
+	mcr	p15, 5, r0, c15, c15, 0		@ D clean/inv range start
+	mcr	p15, 5, r1, c15, c15, 1		@ D clean/inv range top
+	msr	cpsr_c, r2			@ restore interrupts
+	mcr	p15, 0, r0, c7, c10, 4		@ drain WB
+	mov	pc, lr
+
 ENTRY(feroceon_cache_fns)
 	.long	feroceon_flush_kern_cache_all
 	.long	feroceon_flush_user_cache_all
@@ -285,12 +376,33 @@ ENTRY(feroceon_cache_fns)
 	.long	feroceon_dma_clean_range
 	.long	feroceon_dma_flush_range
 
+ENTRY(feroceon_range_cache_fns)
+	.long	feroceon_flush_kern_cache_all
+	.long	feroceon_flush_user_cache_all
+	.long	feroceon_flush_user_cache_range
+	.long	feroceon_coherent_kern_range
+	.long	feroceon_coherent_user_range
+	.long	feroceon_range_flush_kern_dcache_page
+	.long	feroceon_range_dma_inv_range
+	.long	feroceon_range_dma_clean_range
+	.long	feroceon_range_dma_flush_range
+
 	.align	5
 ENTRY(cpu_feroceon_dcache_clean_area)
+#if defined(CONFIG_CACHE_FEROCEON_L2) && !defined(CONFIG_L2_CACHE_WRITETHROUGH)
+	mov	r2, r0
+	mov	r3, r1
+#endif
 1:	mcr	p15, 0, r0, c7, c10, 1		@ clean D entry
 	add	r0, r0, #CACHE_DLINESIZE
 	subs	r1, r1, #CACHE_DLINESIZE
 	bhi	1b
+#if defined(CONFIG_CACHE_FEROCEON_L2) && !defined(CONFIG_L2_CACHE_WRITETHROUGH)
+1:	mcr	p15, 1, r2, c15, c9, 1		@ clean L2 entry
+	add	r2, r2, #CACHE_DLINESIZE
+	subs	r3, r3, #CACHE_DLINESIZE
+	bhi	1b
+#endif
 	mcr	p15, 0, r0, c7, c10, 4		@ drain WB
 	mov	pc, lr
 
@@ -306,16 +418,25 @@ ENTRY(cpu_feroceon_dcache_clean_area)
 	.align	5
 ENTRY(cpu_feroceon_switch_mm)
 #ifdef CONFIG_MMU
-	mov	ip, #0
-@ && 'Clean & Invalidate whole DCache'
-1:	mrc	p15, 0, r15, c7, c14, 3 	@ test,clean,invalidate
-	bne	1b
-	mcr	p15, 0, ip, c7, c5, 0		@ invalidate I cache
-	mcr	p15, 0, ip, c7, c10, 4		@ drain WB
+	/*
+	 * Note: we wish to call __flush_whole_cache but we need to preserve
+	 * lr to do so.  The only way without touching main memory is to
+	 * use r2 which is normally used to test the VM_EXEC flag, and
+	 * compensate locally for the skipped ops if it is not set.
+	 */
+	mov	r2, lr				@ abuse r2 to preserve lr
+	bl	__flush_whole_cache
+	@ if r2 contains the VM_EXEC bit then the next 2 ops are done already
+	tst	r2, #VM_EXEC
+	mcreq	p15, 0, ip, c7, c5, 0		@ invalidate I cache
+	mcreq	p15, 0, ip, c7, c10, 4		@ drain WB
+
 	mcr	p15, 0, r0, c2, c0, 0		@ load page table pointer
 	mcr	p15, 0, ip, c8, c7, 0		@ invalidate I & D TLBs
-#endif
+	mov	pc, r2
+#else
 	mov	pc, lr
+#endif
 
 /*
  * cpu_feroceon_set_pte_ext(ptep, pte, ext)
@@ -345,6 +466,9 @@ ENTRY(cpu_feroceon_set_pte_ext)
 	str	r2, [r0]			@ hardware version
 	mov	r0, r0
 	mcr	p15, 0, r0, c7, c10, 1		@ clean D entry
+#if defined(CONFIG_CACHE_FEROCEON_L2) && !defined(CONFIG_L2_CACHE_WRITETHROUGH)
+	mcr	p15, 1, r0, c15, c9, 1		@ clean L2 entry
+#endif
 	mcr	p15, 0, r0, c7, c10, 4		@ drain WB
 #endif
 	mov	pc, lr
@@ -369,14 +493,15 @@ __feroceon_setup:
 	.size	__feroceon_setup, . - __feroceon_setup
 
 	/*
-	 *  R
-	 * .RVI ZFRS BLDP WCAM
-	 * .011 0001 ..11 0101
+	 *      B
+	 *  R   P
+	 * .RVI UFRS BLDP WCAM
+	 * .011 .001 ..11 0101
 	 *
 	 */
 	.type	feroceon_crval, #object
 feroceon_crval:
-	crval	clear=0x00007f3f, mmuset=0x00003135, ucset=0x00001134
+	crval	clear=0x0000773f, mmuset=0x00003135, ucset=0x00001134
 
 	__INITDATA
 
@@ -414,6 +539,21 @@ cpu_feroceon_name:
 	.asciz	"Feroceon"
 	.size	cpu_feroceon_name, . - cpu_feroceon_name
 
+	.type	cpu_88fr531_name, #object
+cpu_88fr531_name:
+	.asciz	"Feroceon 88FR531-vd"
+	.size	cpu_88fr531_name, . - cpu_88fr531_name
+
+	.type	cpu_88fr571_name, #object
+cpu_88fr571_name:
+	.asciz	"Feroceon 88FR571-vd"
+	.size	cpu_88fr571_name, . - cpu_88fr571_name
+
+	.type	cpu_88fr131_name, #object
+cpu_88fr131_name:
+	.asciz	"Feroceon 88FR131"
+	.size	cpu_88fr131_name, . - cpu_88fr131_name
+
 	.align
 
 	.section ".proc.info.init", #alloc, #execinstr
@@ -421,15 +561,15 @@ cpu_feroceon_name:
 #ifdef CONFIG_CPU_FEROCEON_OLD_ID
 	.type	__feroceon_old_id_proc_info,#object
 __feroceon_old_id_proc_info:
-	.long	0x41069260
-	.long	0xfffffff0
-	.long   PMD_TYPE_SECT | \
+	.long	0x41009260
+	.long	0xff00fff0
+	.long	PMD_TYPE_SECT | \
 		PMD_SECT_BUFFERABLE | \
 		PMD_SECT_CACHEABLE | \
 		PMD_BIT4 | \
 		PMD_SECT_AP_WRITE | \
 		PMD_SECT_AP_READ
-	.long   PMD_TYPE_SECT | \
+	.long	PMD_TYPE_SECT | \
 		PMD_BIT4 | \
 		PMD_SECT_AP_WRITE | \
 		PMD_SECT_AP_READ
@@ -445,17 +585,17 @@ __feroceon_old_id_proc_info:
 	.size	__feroceon_old_id_proc_info, . - __feroceon_old_id_proc_info
 #endif
 
-	.type	__feroceon_proc_info,#object
-__feroceon_proc_info:
+	.type	__88fr531_proc_info,#object
+__88fr531_proc_info:
 	.long	0x56055310
 	.long	0xfffffff0
-	.long   PMD_TYPE_SECT | \
+	.long	PMD_TYPE_SECT | \
 		PMD_SECT_BUFFERABLE | \
 		PMD_SECT_CACHEABLE | \
 		PMD_BIT4 | \
 		PMD_SECT_AP_WRITE | \
 		PMD_SECT_AP_READ
-	.long   PMD_TYPE_SECT | \
+	.long	PMD_TYPE_SECT | \
 		PMD_BIT4 | \
 		PMD_SECT_AP_WRITE | \
 		PMD_SECT_AP_READ
@@ -463,9 +603,59 @@ __feroceon_proc_info:
 	.long	cpu_arch_name
 	.long	cpu_elf_name
 	.long	HWCAP_SWP|HWCAP_HALF|HWCAP_THUMB|HWCAP_FAST_MULT|HWCAP_EDSP
-	.long	cpu_feroceon_name
+	.long	cpu_88fr531_name
 	.long	feroceon_processor_functions
 	.long	v4wbi_tlb_fns
 	.long	feroceon_user_fns
 	.long	feroceon_cache_fns
-	.size	__feroceon_proc_info, . - __feroceon_proc_info
+	.size	__88fr531_proc_info, . - __88fr531_proc_info
+
+	.type	__88fr571_proc_info,#object
+__88fr571_proc_info:
+	.long	0x56155710
+	.long	0xfffffff0
+	.long	PMD_TYPE_SECT | \
+		PMD_SECT_BUFFERABLE | \
+		PMD_SECT_CACHEABLE | \
+		PMD_BIT4 | \
+		PMD_SECT_AP_WRITE | \
+		PMD_SECT_AP_READ
+	.long	PMD_TYPE_SECT | \
+		PMD_BIT4 | \
+		PMD_SECT_AP_WRITE | \
+		PMD_SECT_AP_READ
+	b	__feroceon_setup
+	.long	cpu_arch_name
+	.long	cpu_elf_name
+	.long	HWCAP_SWP|HWCAP_HALF|HWCAP_THUMB|HWCAP_FAST_MULT|HWCAP_EDSP
+	.long	cpu_88fr571_name
+	.long	feroceon_processor_functions
+	.long	v4wbi_tlb_fns
+	.long	feroceon_user_fns
+	.long	feroceon_range_cache_fns
+	.size	__88fr571_proc_info, . - __88fr571_proc_info
+
+	.type	__88fr131_proc_info,#object
+__88fr131_proc_info:
+	.long	0x56251310
+	.long	0xfffffff0
+	.long	PMD_TYPE_SECT | \
+		PMD_SECT_BUFFERABLE | \
+		PMD_SECT_CACHEABLE | \
+		PMD_BIT4 | \
+		PMD_SECT_AP_WRITE | \
+		PMD_SECT_AP_READ
+	.long	PMD_TYPE_SECT | \
+		PMD_BIT4 | \
+		PMD_SECT_AP_WRITE | \
+		PMD_SECT_AP_READ
+	b	__feroceon_setup
+	.long	cpu_arch_name
+	.long	cpu_elf_name
+	.long	HWCAP_SWP|HWCAP_HALF|HWCAP_THUMB|HWCAP_FAST_MULT|HWCAP_EDSP
+	.long	cpu_88fr131_name
+	.long	feroceon_processor_functions
+	.long	v4wbi_tlb_fns
+	.long	feroceon_user_fns
+	.long	feroceon_range_cache_fns
+	.size	__88fr131_proc_info, . - __88fr131_proc_info