[deliverable/linux.git] / arch / sh / mm / cache.c

/*
 * arch/sh/mm/cache.c
 *
 * Copyright (C) 1999, 2000, 2002  Niibe Yutaka
 * Copyright (C) 2002 - 2009  Paul Mundt
 *
 * Released under the terms of the GNU GPL v2.0.
 */
#include <linux/mm.h>
#include <linux/init.h>
#include <linux/mutex.h>
#include <linux/fs.h>
#include <linux/smp.h>
#include <linux/highmem.h>
#include <linux/module.h>
#include <asm/mmu_context.h>
#include <asm/cacheflush.h>

void (*local_flush_cache_all)(void *args) = cache_noop;
void (*local_flush_cache_mm)(void *args) = cache_noop;
void (*local_flush_cache_dup_mm)(void *args) = cache_noop;
void (*local_flush_cache_page)(void *args) = cache_noop;
void (*local_flush_cache_range)(void *args) = cache_noop;
void (*local_flush_dcache_page)(void *args) = cache_noop;
void (*local_flush_icache_range)(void *args) = cache_noop;
void (*local_flush_icache_page)(void *args) = cache_noop;
void (*local_flush_cache_sigtramp)(void *args) = cache_noop;

void (*__flush_wback_region)(void *start, int size);
void (*__flush_purge_region)(void *start, int size);
void (*__flush_invalidate_region)(void *start, int size);

static inline void noop__flush_region(void *start, int size)
{
}

static inline void cacheop_on_each_cpu(void (*func) (void *info), void *info,
                                   int wait)
{
	preempt_disable();
	smp_call_function(func, info, wait);
	func(info);
	preempt_enable();
}

void copy_to_user_page(struct vm_area_struct *vma, struct page *page,
		       unsigned long vaddr, void *dst, const void *src,
		       unsigned long len)
{
	if (boot_cpu_data.dcache.n_aliases && page_mapped(page) &&
	    !test_bit(PG_dcache_dirty, &page->flags)) {
		void *vto = kmap_coherent(page, vaddr) + (vaddr & ~PAGE_MASK);
		memcpy(vto, src, len);
		kunmap_coherent(vto);
	} else {
		memcpy(dst, src, len);
		if (boot_cpu_data.dcache.n_aliases)
			set_bit(PG_dcache_dirty, &page->flags);
	}

	if (vma->vm_flags & VM_EXEC)
		flush_cache_page(vma, vaddr, page_to_pfn(page));
}

void copy_from_user_page(struct vm_area_struct *vma, struct page *page,
			 unsigned long vaddr, void *dst, const void *src,
			 unsigned long len)
{
	if (boot_cpu_data.dcache.n_aliases && page_mapped(page) &&
	    !test_bit(PG_dcache_dirty, &page->flags)) {
		void *vfrom = kmap_coherent(page, vaddr) + (vaddr & ~PAGE_MASK);
		memcpy(dst, vfrom, len);
		kunmap_coherent(vfrom);
	} else {
		memcpy(dst, src, len);
		if (boot_cpu_data.dcache.n_aliases)
			set_bit(PG_dcache_dirty, &page->flags);
	}
}

void copy_user_highpage(struct page *to, struct page *from,
			unsigned long vaddr, struct vm_area_struct *vma)
{
	void *vfrom, *vto;

	vto = kmap_atomic(to, KM_USER1);

	if (boot_cpu_data.dcache.n_aliases && page_mapped(from) &&
	    !test_bit(PG_dcache_dirty, &from->flags)) {
		vfrom = kmap_coherent(from, vaddr);
		copy_page(vto, vfrom);
		kunmap_coherent(vfrom);
	} else {
		vfrom = kmap_atomic(from, KM_USER0);
		copy_page(vto, vfrom);
		kunmap_atomic(vfrom, KM_USER0);
	}

	if (pages_do_alias((unsigned long)vto, vaddr & PAGE_MASK))
		__flush_purge_region(vto, PAGE_SIZE);

	kunmap_atomic(vto, KM_USER1);
	/* Make sure this page is cleared on other CPU's too before using it */
	smp_wmb();
}
EXPORT_SYMBOL(copy_user_highpage);

void clear_user_highpage(struct page *page, unsigned long vaddr)
{
	void *kaddr = kmap_atomic(page, KM_USER0);

	clear_page(kaddr);

	if (pages_do_alias((unsigned long)kaddr, vaddr & PAGE_MASK))
		__flush_purge_region(kaddr, PAGE_SIZE);

	kunmap_atomic(kaddr, KM_USER0);
}
EXPORT_SYMBOL(clear_user_highpage);

void __update_cache(struct vm_area_struct *vma,
		    unsigned long address, pte_t pte)
{
	struct page *page;
	unsigned long pfn = pte_pfn(pte);

	if (!boot_cpu_data.dcache.n_aliases)
		return;

	page = pfn_to_page(pfn);
	if (pfn_valid(pfn)) {
		int dirty = test_and_clear_bit(PG_dcache_dirty, &page->flags);
		if (dirty) {
			unsigned long addr = (unsigned long)page_address(page);

			if (pages_do_alias(addr, address & PAGE_MASK))
				__flush_purge_region((void *)addr, PAGE_SIZE);
		}
	}
}

void __flush_anon_page(struct page *page, unsigned long vmaddr)
{
	unsigned long addr = (unsigned long) page_address(page);

	if (pages_do_alias(addr, vmaddr)) {
		if (boot_cpu_data.dcache.n_aliases && page_mapped(page) &&
		    !test_bit(PG_dcache_dirty, &page->flags)) {
			void *kaddr;

			kaddr = kmap_coherent(page, vmaddr);
			/* XXX.. For now kunmap_coherent() does a purge */
			/* __flush_purge_region((void *)kaddr, PAGE_SIZE); */
			kunmap_coherent(kaddr);
		} else
			__flush_purge_region((void *)addr, PAGE_SIZE);
	}
}

void flush_cache_all(void)
{
	cacheop_on_each_cpu(local_flush_cache_all, NULL, 1);
}

void flush_cache_mm(struct mm_struct *mm)
{
	if (boot_cpu_data.dcache.n_aliases == 0)
		return;

	cacheop_on_each_cpu(local_flush_cache_mm, mm, 1);
}

void flush_cache_dup_mm(struct mm_struct *mm)
{
	if (boot_cpu_data.dcache.n_aliases == 0)
		return;

	cacheop_on_each_cpu(local_flush_cache_dup_mm, mm, 1);
}

void flush_cache_page(struct vm_area_struct *vma, unsigned long addr,
		      unsigned long pfn)
{
	struct flusher_data data;

	data.vma = vma;
	data.addr1 = addr;
	data.addr2 = pfn;

	cacheop_on_each_cpu(local_flush_cache_page, (void *)&data, 1);
}

void flush_cache_range(struct vm_area_struct *vma, unsigned long start,
		       unsigned long end)
{
	struct flusher_data data;

	data.vma = vma;
	data.addr1 = start;
	data.addr2 = end;

	cacheop_on_each_cpu(local_flush_cache_range, (void *)&data, 1);
}

void flush_dcache_page(struct page *page)
{
	cacheop_on_each_cpu(local_flush_dcache_page, page, 1);
}

void flush_icache_range(unsigned long start, unsigned long end)
{
	struct flusher_data data;

	data.vma = NULL;
	data.addr1 = start;
	data.addr2 = end;

	cacheop_on_each_cpu(local_flush_icache_range, (void *)&data, 1);
}

void flush_icache_page(struct vm_area_struct *vma, struct page *page)
{
	/* Nothing uses the VMA, so just pass the struct page along */
	cacheop_on_each_cpu(local_flush_icache_page, page, 1);
}

void flush_cache_sigtramp(unsigned long address)
{
	cacheop_on_each_cpu(local_flush_cache_sigtramp, (void *)address, 1);
}

static void compute_alias(struct cache_info *c)
{
	c->alias_mask = ((c->sets - 1) << c->entry_shift) & ~(PAGE_SIZE - 1);
	c->n_aliases = c->alias_mask ? (c->alias_mask >> PAGE_SHIFT) + 1 : 0;
}

static void __init emit_cache_params(void)
{
	printk(KERN_NOTICE "I-cache : n_ways=%d n_sets=%d way_incr=%d\n",
		boot_cpu_data.icache.ways,
		boot_cpu_data.icache.sets,
		boot_cpu_data.icache.way_incr);
	printk(KERN_NOTICE "I-cache : entry_mask=0x%08x alias_mask=0x%08x n_aliases=%d\n",
		boot_cpu_data.icache.entry_mask,
		boot_cpu_data.icache.alias_mask,
		boot_cpu_data.icache.n_aliases);
	printk(KERN_NOTICE "D-cache : n_ways=%d n_sets=%d way_incr=%d\n",
		boot_cpu_data.dcache.ways,
		boot_cpu_data.dcache.sets,
		boot_cpu_data.dcache.way_incr);
	printk(KERN_NOTICE "D-cache : entry_mask=0x%08x alias_mask=0x%08x n_aliases=%d\n",
		boot_cpu_data.dcache.entry_mask,
		boot_cpu_data.dcache.alias_mask,
		boot_cpu_data.dcache.n_aliases);

	/*
	 * Emit Secondary Cache parameters if the CPU has a probed L2.
	 */
	if (boot_cpu_data.flags & CPU_HAS_L2_CACHE) {
		printk(KERN_NOTICE "S-cache : n_ways=%d n_sets=%d way_incr=%d\n",
			boot_cpu_data.scache.ways,
			boot_cpu_data.scache.sets,
			boot_cpu_data.scache.way_incr);
		printk(KERN_NOTICE "S-cache : entry_mask=0x%08x alias_mask=0x%08x n_aliases=%d\n",
			boot_cpu_data.scache.entry_mask,
			boot_cpu_data.scache.alias_mask,
			boot_cpu_data.scache.n_aliases);
	}
}

void __init cpu_cache_init(void)
{
	unsigned int cache_disabled = !(__raw_readl(CCR) & CCR_CACHE_ENABLE);

	compute_alias(&boot_cpu_data.icache);
	compute_alias(&boot_cpu_data.dcache);
	compute_alias(&boot_cpu_data.scache);

	__flush_wback_region		= noop__flush_region;
	__flush_purge_region		= noop__flush_region;
	__flush_invalidate_region	= noop__flush_region;

	/*
	 * No flushing is necessary in the disabled cache case so we can
	 * just keep the noop functions in local_flush_..() and __flush_..()
	 */
	if (unlikely(cache_disabled))
		goto skip;

	if (boot_cpu_data.family == CPU_FAMILY_SH2) {
		extern void __weak sh2_cache_init(void);

		sh2_cache_init();
	}

	if (boot_cpu_data.family == CPU_FAMILY_SH2A) {
		extern void __weak sh2a_cache_init(void);

		sh2a_cache_init();
	}

	if (boot_cpu_data.family == CPU_FAMILY_SH3) {
		extern void __weak sh3_cache_init(void);

		sh3_cache_init();

		if ((boot_cpu_data.type == CPU_SH7705) &&
		    (boot_cpu_data.dcache.sets == 512)) {
			extern void __weak sh7705_cache_init(void);

			sh7705_cache_init();
		}
	}

	if ((boot_cpu_data.family == CPU_FAMILY_SH4) ||
	    (boot_cpu_data.family == CPU_FAMILY_SH4A) ||
	    (boot_cpu_data.family == CPU_FAMILY_SH4AL_DSP)) {
		extern void __weak sh4_cache_init(void);

		sh4_cache_init();
	}

	if (boot_cpu_data.family == CPU_FAMILY_SH5) {
		extern void __weak sh5_cache_init(void);

		sh5_cache_init();
	}

skip:
	emit_cache_params();
}
Commit	Line	Data
1da177e4	1	/*
f26b2a56	2	* arch/sh/mm/cache.c
1da177e4 LT	3	*
1da177e4 LT	4	* Copyright (C) 1999, 2000, 2002 Niibe Yutaka
dfff0fa6	5	* Copyright (C) 2002 - 2009 Paul Mundt
1da177e4 LT	6	*
	7	* Released under the terms of the GNU GPL v2.0.
	8	*/
1da177e4	9	#include <linux/mm.h>
acca4f4d	10	#include <linux/init.h>
52e27782	11	#include <linux/mutex.h>
e06c4e57	12	#include <linux/fs.h>
f26b2a56	13	#include <linux/smp.h>
7747b9a4 PM	14	#include <linux/highmem.h>
7747b9a4 PM	15	#include <linux/module.h>
1da177e4 LT	16	#include <asm/mmu_context.h>
	17	#include <asm/cacheflush.h>
	18
f26b2a56 PM	19	void (local_flush_cache_all)(void args) = cache_noop;
	20	void (local_flush_cache_mm)(void args) = cache_noop;
	21	void (local_flush_cache_dup_mm)(void args) = cache_noop;
	22	void (local_flush_cache_page)(void args) = cache_noop;
	23	void (local_flush_cache_range)(void args) = cache_noop;
	24	void (local_flush_dcache_page)(void args) = cache_noop;
	25	void (local_flush_icache_range)(void args) = cache_noop;
	26	void (local_flush_icache_page)(void args) = cache_noop;
	27	void (local_flush_cache_sigtramp)(void args) = cache_noop;
	28
37443ef3 PM	29	void (__flush_wback_region)(void start, int size);
	30	void (__flush_purge_region)(void start, int size);
	31	void (__flush_invalidate_region)(void start, int size);
	32
37443ef3 PM	33	static inline void noop__flush_region(void *start, int size)
	34	{
	35	}
	36
6f379578 PM	37	static inline void cacheop_on_each_cpu(void (func) (void info), void *info,
	38	int wait)
	39	{
	40	preempt_disable();
	41	smp_call_function(func, info, wait);
	42	func(info);
	43	preempt_enable();
	44	}
	45
ba1789ef PM	46	void copy_to_user_page(struct vm_area_struct vma, struct page page,
	47	unsigned long vaddr, void dst, const void src,
	48	unsigned long len)
1da177e4	49	{
0dfae7d5 PM	50	if (boot_cpu_data.dcache.n_aliases && page_mapped(page) &&
0dfae7d5 PM	51	!test_bit(PG_dcache_dirty, &page->flags)) {
2277ab4a PM	52	void *vto = kmap_coherent(page, vaddr) + (vaddr & ~PAGE_MASK);
2277ab4a PM	53	memcpy(vto, src, len);
0906a3ad	54	kunmap_coherent(vto);
2277ab4a PM	55	} else {
2277ab4a PM	56	memcpy(dst, src, len);
0dfae7d5 PM	57	if (boot_cpu_data.dcache.n_aliases)
0dfae7d5 PM	58	set_bit(PG_dcache_dirty, &page->flags);
2277ab4a	59	}
ba1789ef PM	60
	61	if (vma->vm_flags & VM_EXEC)
	62	flush_cache_page(vma, vaddr, page_to_pfn(page));
	63	}
	64
	65	void copy_from_user_page(struct vm_area_struct vma, struct page page,
	66	unsigned long vaddr, void dst, const void src,
	67	unsigned long len)
	68	{
0dfae7d5 PM	69	if (boot_cpu_data.dcache.n_aliases && page_mapped(page) &&
0dfae7d5 PM	70	!test_bit(PG_dcache_dirty, &page->flags)) {
2277ab4a PM	71	void *vfrom = kmap_coherent(page, vaddr) + (vaddr & ~PAGE_MASK);
2277ab4a PM	72	memcpy(dst, vfrom, len);
0906a3ad	73	kunmap_coherent(vfrom);
2277ab4a PM	74	} else {
2277ab4a PM	75	memcpy(dst, src, len);
0dfae7d5 PM	76	if (boot_cpu_data.dcache.n_aliases)
0dfae7d5 PM	77	set_bit(PG_dcache_dirty, &page->flags);
2277ab4a	78	}
1da177e4	79	}
39e688a9	80
7747b9a4 PM	81	void copy_user_highpage(struct page to, struct page from,
	82	unsigned long vaddr, struct vm_area_struct *vma)
	83	{
	84	void vfrom, vto;
	85
7747b9a4	86	vto = kmap_atomic(to, KM_USER1);
7747b9a4	87
0dfae7d5 PM	88	if (boot_cpu_data.dcache.n_aliases && page_mapped(from) &&
0dfae7d5 PM	89	!test_bit(PG_dcache_dirty, &from->flags)) {
2277ab4a PM	90	vfrom = kmap_coherent(from, vaddr);
2277ab4a PM	91	copy_page(vto, vfrom);
0906a3ad	92	kunmap_coherent(vfrom);
2277ab4a PM	93	} else {
	94	vfrom = kmap_atomic(from, KM_USER0);
	95	copy_page(vto, vfrom);
	96	kunmap_atomic(vfrom, KM_USER0);
	97	}
	98
	99	if (pages_do_alias((unsigned long)vto, vaddr & PAGE_MASK))
6e4154d4	100	__flush_purge_region(vto, PAGE_SIZE);
7747b9a4 PM	101
	102	kunmap_atomic(vto, KM_USER1);
	103	/* Make sure this page is cleared on other CPU's too before using it */
	104	smp_wmb();
	105	}
	106	EXPORT_SYMBOL(copy_user_highpage);
dfff0fa6 PM	107
	108	void clear_user_highpage(struct page *page, unsigned long vaddr)
	109	{
	110	void *kaddr = kmap_atomic(page, KM_USER0);
	111
	112	clear_page(kaddr);
	113
	114	if (pages_do_alias((unsigned long)kaddr, vaddr & PAGE_MASK))
6e4154d4	115	__flush_purge_region(kaddr, PAGE_SIZE);
dfff0fa6 PM	116
	117	kunmap_atomic(kaddr, KM_USER0);
	118	}
	119	EXPORT_SYMBOL(clear_user_highpage);
9cef7492 PM	120
	121	void __update_cache(struct vm_area_struct *vma,
	122	unsigned long address, pte_t pte)
	123	{
	124	struct page *page;
	125	unsigned long pfn = pte_pfn(pte);
	126
	127	if (!boot_cpu_data.dcache.n_aliases)
	128	return;
	129
	130	page = pfn_to_page(pfn);
964f7e5a	131	if (pfn_valid(pfn)) {
9cef7492 PM	132	int dirty = test_and_clear_bit(PG_dcache_dirty, &page->flags);
	133	if (dirty) {
	134	unsigned long addr = (unsigned long)page_address(page);
	135
	136	if (pages_do_alias(addr, address & PAGE_MASK))
6e4154d4	137	__flush_purge_region((void *)addr, PAGE_SIZE);
9cef7492 PM	138	}
	139	}
	140	}
c0fe478d PM	141
	142	void __flush_anon_page(struct page *page, unsigned long vmaddr)
	143	{
	144	unsigned long addr = (unsigned long) page_address(page);
	145
	146	if (pages_do_alias(addr, vmaddr)) {
	147	if (boot_cpu_data.dcache.n_aliases && page_mapped(page) &&
	148	!test_bit(PG_dcache_dirty, &page->flags)) {
	149	void *kaddr;
	150
	151	kaddr = kmap_coherent(page, vmaddr);
6e4154d4 PM	152	/* XXX.. For now kunmap_coherent() does a purge */
6e4154d4 PM	153	/* __flush_purge_region((void )kaddr, PAGE_SIZE); /
0906a3ad	154	kunmap_coherent(kaddr);
c0fe478d	155	} else
6e4154d4	156	__flush_purge_region((void *)addr, PAGE_SIZE);
c0fe478d PM	157	}
c0fe478d PM	158	}
ecba1060	159
f26b2a56 PM	160	void flush_cache_all(void)
f26b2a56 PM	161	{
6f379578	162	cacheop_on_each_cpu(local_flush_cache_all, NULL, 1);
f26b2a56 PM	163	}
	164
	165	void flush_cache_mm(struct mm_struct *mm)
	166	{
654d364e PM	167	if (boot_cpu_data.dcache.n_aliases == 0)
	168	return;
	169
6f379578	170	cacheop_on_each_cpu(local_flush_cache_mm, mm, 1);
f26b2a56 PM	171	}
	172
	173	void flush_cache_dup_mm(struct mm_struct *mm)
	174	{
654d364e PM	175	if (boot_cpu_data.dcache.n_aliases == 0)
	176	return;
	177
6f379578	178	cacheop_on_each_cpu(local_flush_cache_dup_mm, mm, 1);
f26b2a56 PM	179	}
	180
	181	void flush_cache_page(struct vm_area_struct *vma, unsigned long addr,
	182	unsigned long pfn)
	183	{
	184	struct flusher_data data;
	185
	186	data.vma = vma;
	187	data.addr1 = addr;
	188	data.addr2 = pfn;
	189
6f379578	190	cacheop_on_each_cpu(local_flush_cache_page, (void *)&data, 1);
f26b2a56 PM	191	}
	192
	193	void flush_cache_range(struct vm_area_struct *vma, unsigned long start,
	194	unsigned long end)
	195	{
	196	struct flusher_data data;
	197
	198	data.vma = vma;
	199	data.addr1 = start;
	200	data.addr2 = end;
	201
6f379578	202	cacheop_on_each_cpu(local_flush_cache_range, (void *)&data, 1);
f26b2a56 PM	203	}
	204
	205	void flush_dcache_page(struct page *page)
	206	{
6f379578	207	cacheop_on_each_cpu(local_flush_dcache_page, page, 1);
f26b2a56 PM	208	}
	209
	210	void flush_icache_range(unsigned long start, unsigned long end)
	211	{
	212	struct flusher_data data;
	213
	214	data.vma = NULL;
	215	data.addr1 = start;
	216	data.addr2 = end;
	217
6f379578	218	cacheop_on_each_cpu(local_flush_icache_range, (void *)&data, 1);
f26b2a56 PM	219	}
	220
	221	void flush_icache_page(struct vm_area_struct vma, struct page page)
	222	{
	223	/* Nothing uses the VMA, so just pass the struct page along */
6f379578	224	cacheop_on_each_cpu(local_flush_icache_page, page, 1);
f26b2a56 PM	225	}
	226
	227	void flush_cache_sigtramp(unsigned long address)
	228	{
6f379578	229	cacheop_on_each_cpu(local_flush_cache_sigtramp, (void *)address, 1);
f26b2a56 PM	230	}
f26b2a56 PM	231
27d59ec1 PM	232	static void compute_alias(struct cache_info *c)
	233	{
	234	c->alias_mask = ((c->sets - 1) << c->entry_shift) & ~(PAGE_SIZE - 1);
	235	c->n_aliases = c->alias_mask ? (c->alias_mask >> PAGE_SHIFT) + 1 : 0;
	236	}
	237
	238	static void __init emit_cache_params(void)
	239	{
	240	printk(KERN_NOTICE "I-cache : n_ways=%d n_sets=%d way_incr=%d\n",
	241	boot_cpu_data.icache.ways,
	242	boot_cpu_data.icache.sets,
	243	boot_cpu_data.icache.way_incr);
	244	printk(KERN_NOTICE "I-cache : entry_mask=0x%08x alias_mask=0x%08x n_aliases=%d\n",
	245	boot_cpu_data.icache.entry_mask,
	246	boot_cpu_data.icache.alias_mask,
	247	boot_cpu_data.icache.n_aliases);
	248	printk(KERN_NOTICE "D-cache : n_ways=%d n_sets=%d way_incr=%d\n",
	249	boot_cpu_data.dcache.ways,
	250	boot_cpu_data.dcache.sets,
	251	boot_cpu_data.dcache.way_incr);
	252	printk(KERN_NOTICE "D-cache : entry_mask=0x%08x alias_mask=0x%08x n_aliases=%d\n",
	253	boot_cpu_data.dcache.entry_mask,
	254	boot_cpu_data.dcache.alias_mask,
	255	boot_cpu_data.dcache.n_aliases);
	256
	257	/*
	258	* Emit Secondary Cache parameters if the CPU has a probed L2.
	259	*/
	260	if (boot_cpu_data.flags & CPU_HAS_L2_CACHE) {
	261	printk(KERN_NOTICE "S-cache : n_ways=%d n_sets=%d way_incr=%d\n",
	262	boot_cpu_data.scache.ways,
	263	boot_cpu_data.scache.sets,
	264	boot_cpu_data.scache.way_incr);
	265	printk(KERN_NOTICE "S-cache : entry_mask=0x%08x alias_mask=0x%08x n_aliases=%d\n",
	266	boot_cpu_data.scache.entry_mask,
	267	boot_cpu_data.scache.alias_mask,
	268	boot_cpu_data.scache.n_aliases);
	269	}
	270	}
	271
ecba1060 PM	272	void __init cpu_cache_init(void)
ecba1060 PM	273	{
5fb80ae8 MD	274	unsigned int cache_disabled = !(__raw_readl(CCR) & CCR_CACHE_ENABLE);
5fb80ae8 MD	275
27d59ec1 PM	276	compute_alias(&boot_cpu_data.icache);
	277	compute_alias(&boot_cpu_data.dcache);
	278	compute_alias(&boot_cpu_data.scache);
	279
37443ef3 PM	280	__flush_wback_region = noop__flush_region;
	281	__flush_purge_region = noop__flush_region;
	282	__flush_invalidate_region = noop__flush_region;
	283
5fb80ae8 MD	284	/*
	285	* No flushing is necessary in the disabled cache case so we can
	286	* just keep the noop functions in local_flush_..() and __flush_..()
	287	*/
	288	if (unlikely(cache_disabled))
	289	goto skip;
	290
109b44a8 PM	291	if (boot_cpu_data.family == CPU_FAMILY_SH2) {
	292	extern void __weak sh2_cache_init(void);
	293
	294	sh2_cache_init();
	295	}
	296
a58e1a2a PM	297	if (boot_cpu_data.family == CPU_FAMILY_SH2A) {
	298	extern void __weak sh2a_cache_init(void);
	299
	300	sh2a_cache_init();
	301	}
	302
79f1c9da PM	303	if (boot_cpu_data.family == CPU_FAMILY_SH3) {
	304	extern void __weak sh3_cache_init(void);
	305
	306	sh3_cache_init();
0d051d90 PM	307
	308	if ((boot_cpu_data.type == CPU_SH7705) &&
	309	(boot_cpu_data.dcache.sets == 512)) {
	310	extern void __weak sh7705_cache_init(void);
	311
	312	sh7705_cache_init();
	313	}
79f1c9da PM	314	}
79f1c9da PM	315
ecba1060 PM	316	if ((boot_cpu_data.family == CPU_FAMILY_SH4) \|\|
	317	(boot_cpu_data.family == CPU_FAMILY_SH4A) \|\|
	318	(boot_cpu_data.family == CPU_FAMILY_SH4AL_DSP)) {
	319	extern void __weak sh4_cache_init(void);
	320
	321	sh4_cache_init();
	322	}
27d59ec1	323
2b431518 PM	324	if (boot_cpu_data.family == CPU_FAMILY_SH5) {
	325	extern void __weak sh5_cache_init(void);
	326
	327	sh5_cache_init();
	328	}
	329
5fb80ae8	330	skip:
27d59ec1	331	emit_cache_params();
ecba1060	332	}