5  * SPDX-License-Identifier:	GPL-2.0+
13 /* Cache maintenance operation registers */
48 	INVALIDATE_POU,		/* i-cache invalidate by address */
49 	INVALIDATE_POC,		/* d-cache invalidate by address */
50 	INVALIDATE_SET_WAY,	/* d-cache invalidate by sets/ways */
51 	FLUSH_POU,		/* d-cache clean by address to the PoU */
52 	FLUSH_POC,		/* d-cache clean by address to the PoC */
53 	FLUSH_SET_WAY,		/* d-cache clean by sets/ways */
54 	FLUSH_INVAL_POC,	/* d-cache clean & invalidate by addr to PoC */
55 	FLUSH_INVAL_SET_WAY,	/* d-cache clean & invalidate by set/ways */
61 	u32 sets;  member
64 static void get_cache_ways_sets(struct dcache_config *cache)  in get_cache_ways_sets()  argument
68 	cache->ways = (cache_size_id & MASK_NUM_WAYS) >> NUM_WAYS_SHIFT;  in get_cache_ways_sets()
69 	cache->sets = (cache_size_id & MASK_NUM_SETS) >> NUM_SETS_SHIFT;  in get_cache_ways_sets()
73  * Return the io register to perform required cache action like clean or clean
74  * & invalidate by sets/ways.
93  * Return the io register to perform required cache action like clean or clean
124 	/* Make sure cache selection is effective for next memory access */  in get_cline_size()
130 	debug("cache line size is %d\n", size);  in get_cline_size()
135 /* Perform the action like invalidate/clean on a range of cache addresses */
145 		return -EINVAL;  in action_cache_range()
151 	/* Cache line size is minium size for the cache action */  in action_cache_range()
153 	/* Align start address to cache line boundary */  in action_cache_range()
154 	start_addr &= ~(cline_size - 1);  in action_cache_range()
155 	debug("total size for cache action = %llx\n", size);  in action_cache_range()
158 		size -= cline_size;  in action_cache_range()
162 	/* Make sure cache action is effective for next memory access */  in action_cache_range()
165 	debug("cache action on range done\n");  in action_cache_range()
173 	struct dcache_config cache;  in action_dcache_all()  local
179 		return -EINVAL;  in action_dcache_all()
182 	/* Make sure cache selection is effective for next memory access */  in action_dcache_all()
185 	get_cache_ways_sets(&cache);	/* Get number of ways & sets */  in action_dcache_all()
186 	debug("cache: ways= %d, sets= %d\n", cache.ways + 1, cache.sets + 1);  in action_dcache_all()
187 	for (i = cache.sets; i >= 0; i--) {  in action_dcache_all()
188 		for (j = cache.ways; j >= 0; j--) {  in action_dcache_all()
194 	/* Make sure cache action is effective for next memory access */  in action_dcache_all()
203 	if (dcache_status())	/* return if cache already enabled */  in dcache_enable()
207 		printf("ERR: D-cache not enabled\n");  in dcache_enable()
211 	setbits_le32(&V7M_SCB->ccr, BIT(V7M_CCR_DCACHE));  in dcache_enable()
213 	/* Make sure cache action is effective for next memory access */  in dcache_enable()
223 	/* if dcache is enabled-> dcache disable & then flush */  in dcache_disable()
225 		printf("ERR: D-cache not flushed\n");  in dcache_disable()
229 	clrbits_le32(&V7M_SCB->ccr, BIT(V7M_CCR_DCACHE));  in dcache_disable()
231 	/* Make sure cache action is effective for next memory access */  in dcache_disable()
238 	return (readl(&V7M_SCB->ccr) & BIT(V7M_CCR_DCACHE)) != 0;  in dcache_status()
243 	if (action_cache_range(INVALIDATE_POC, start, stop - start)) {  in invalidate_dcache_range()
244 		printf("ERR: D-cache not invalidated\n");  in invalidate_dcache_range()
251 	if (action_cache_range(FLUSH_POC, start, stop - start)) {  in flush_dcache_range()
252 		printf("ERR: D-cache not flushed\n");  in flush_dcache_range()
259 		printf("ERR: D-cache not flushed\n");  in flush_dcache_all()
267 		printf("ERR: D-cache not invalidated\n");  in invalidate_dcache_all()
302 	/* Make sure cache action is effective for next memory access */  in invalidate_icache_all()
313 	setbits_le32(&V7M_SCB->ccr, BIT(V7M_CCR_ICACHE));  in icache_enable()
315 	/* Make sure cache action is effective for next memory access */  in icache_enable()
322 	return (readl(&V7M_SCB->ccr) & BIT(V7M_CCR_ICACHE)) != 0;  in icache_status()
331 	clrbits_le32(&V7M_SCB->ccr, BIT(V7M_CCR_ICACHE));  in icache_disable()
332 	isb();	/* subsequent instructions fetch see cache disable effect */  in icache_disable()