68 static int sram_add_pool(struct sram_dev *sram, struct sram_reserve *block,  in sram_add_pool()  argument
73 	part->pool = devm_gen_pool_create(sram->dev, ilog2(SRAM_GRANULARITY),  in sram_add_pool()
81 		dev_err(sram->dev, "failed to register subpool: %d\n", ret);  in sram_add_pool()
88 static int sram_add_export(struct sram_dev *sram, struct sram_reserve *block,  in sram_add_export()  argument
92 	part->battr.attr.name = devm_kasprintf(sram->dev, GFP_KERNEL,  in sram_add_export()
103 	return device_create_bin_file(sram->dev, &part->battr);  in sram_add_export()
106 static int sram_add_partition(struct sram_dev *sram, struct sram_reserve *block,  in sram_add_partition()  argument
110 	struct sram_partition *part = &sram->partition[sram->partitions];  in sram_add_partition()
113 	part->base = sram->virt_base + block->start;  in sram_add_partition()
116 		ret = sram_add_pool(sram, block, start, part);  in sram_add_partition()
121 		ret = sram_add_export(sram, block, start, part);  in sram_add_partition()
126 		ret = sram_check_protect_exec(sram, block, part);  in sram_add_partition()
130 		ret = sram_add_pool(sram, block, start, part);  in sram_add_partition()
137 	sram->partitions++;  in sram_add_partition()
142 static void sram_free_partitions(struct sram_dev *sram)  in sram_free_partitions()  argument
146 	if (!sram->partitions)  in sram_free_partitions()
149 	part = &sram->partition[sram->partitions - 1];  in sram_free_partitions()
150 	for (; sram->partitions; sram->partitions--, part--) {  in sram_free_partitions()
152 			device_remove_bin_file(sram->dev, &part->battr);  in sram_free_partitions()
156 			dev_err(sram->dev, "removed pool while SRAM allocated\n");  in sram_free_partitions()
169 static int sram_reserve_regions(struct sram_dev *sram, struct resource *res)  in sram_reserve_regions()  argument
171 	struct device_node *np = sram->dev->of_node, *child;  in sram_reserve_regions()
198 			dev_err(sram->dev,  in sram_reserve_regions()
205 			dev_err(sram->dev,  in sram_reserve_regions()
232 				dev_err(sram->dev,  in sram_reserve_regions()
240 			block->label = devm_kstrdup(sram->dev,  in sram_reserve_regions()
247 			dev_dbg(sram->dev, "found %sblock '%s' 0x%x-0x%x\n",  in sram_reserve_regions()
251 			dev_dbg(sram->dev, "found reserved block 0x%x-0x%x\n",  in sram_reserve_regions()
267 		sram->partition = devm_kcalloc(sram->dev,  in sram_reserve_regions()
268 				       exports, sizeof(*sram->partition),  in sram_reserve_regions()
270 		if (!sram->partition) {  in sram_reserve_regions()
280 			dev_err(sram->dev,  in sram_reserve_regions()
284 			sram_free_partitions(sram);  in sram_reserve_regions()
290 			ret = sram_add_partition(sram, block,  in sram_reserve_regions()
293 				sram_free_partitions(sram);  in sram_reserve_regions()
311 		dev_dbg(sram->dev, "adding chunk 0x%lx-0x%lx\n",  in sram_reserve_regions()
314 		ret = gen_pool_add_virt(sram->pool,  in sram_reserve_regions()
315 				(unsigned long)sram->virt_base + cur_start,  in sram_reserve_regions()
318 			sram_free_partitions(sram);  in sram_reserve_regions()
357 	struct sram_dev *sram;  in sram_probe()  local
363 	sram = devm_kzalloc(&pdev->dev, sizeof(*sram), GFP_KERNEL);  in sram_probe()
364 	if (!sram)  in sram_probe()
367 	sram->dev = &pdev->dev;  in sram_probe()
371 		dev_err(sram->dev, "found no memory resource\n");  in sram_probe()
377 	if (!devm_request_mem_region(sram->dev, res->start, size, pdev->name)) {  in sram_probe()
378 		dev_err(sram->dev, "could not request region for resource\n");  in sram_probe()
383 		sram->virt_base = devm_ioremap(sram->dev, res->start, size);  in sram_probe()
385 		sram->virt_base = devm_ioremap_wc(sram->dev, res->start, size);  in sram_probe()
386 	if (!sram->virt_base)  in sram_probe()
389 	sram->pool = devm_gen_pool_create(sram->dev, ilog2(SRAM_GRANULARITY),  in sram_probe()
391 	if (IS_ERR(sram->pool))  in sram_probe()
392 		return PTR_ERR(sram->pool);  in sram_probe()
394 	sram->clk = devm_clk_get(sram->dev, NULL);  in sram_probe()
395 	if (IS_ERR(sram->clk))  in sram_probe()
396 		sram->clk = NULL;  in sram_probe()
398 		clk_prepare_enable(sram->clk);  in sram_probe()
400 	ret = sram_reserve_regions(sram, res);  in sram_probe()
404 	platform_set_drvdata(pdev, sram);  in sram_probe()
413 	dev_dbg(sram->dev, "SRAM pool: %zu KiB @ 0x%p\n",  in sram_probe()
414 		gen_pool_size(sram->pool) / 1024, sram->virt_base);  in sram_probe()
419 	sram_free_partitions(sram);  in sram_probe()
421 	if (sram->clk)  in sram_probe()
422 		clk_disable_unprepare(sram->clk);  in sram_probe()
429 	struct sram_dev *sram = platform_get_drvdata(pdev);  in sram_remove()  local
431 	sram_free_partitions(sram);  in sram_remove()
433 	if (gen_pool_avail(sram->pool) < gen_pool_size(sram->pool))  in sram_remove()
434 		dev_err(sram->dev, "removed while SRAM allocated\n");  in sram_remove()
436 	if (sram->clk)  in sram_remove()
437 		clk_disable_unprepare(sram->clk);  in sram_remove()