3  * DMABUF CMA heap exporter
16 #include <linux/cma.h>
29 #include "../../../mm/cma.h"
34 	struct cma *cma;  member
400 	cma_release(cma_heap->cma, buffer->cma_pages, buffer->pagecount);  in rk_cma_heap_dma_buf_release()
450 	cma_pages = cma_alloc(cma_heap->cma, pagecount, align, GFP_KERNEL);  in rk_cma_heap_allocate()
454 	/* Clear the cma pages */  in rk_cma_heap_allocate()
521 	cma_release(cma_heap->cma, cma_pages, pagecount);  in rk_cma_heap_allocate()
541 	page = cma_alloc(cma_heap->cma, pagecount, align, GFP_KERNEL);  in rk_cma_heap_allocate_pages()
547 		cma_release(cma_heap->cma, page, pagecount);  in rk_cma_heap_allocate_pages()
565 	cma_release(cma_heap->cma, page, pagecount);  in rk_cma_heap_free_pages()
578 static int __rk_add_cma_heap(struct cma *cma, void *data)  in __rk_add_cma_heap()  argument
586 	cma_heap->cma = cma;  in __rk_add_cma_heap()
588 	exp_info.name = cma_get_name(cma);  in __rk_add_cma_heap()
603 					cma_procfs_show, cma);  in __rk_add_cma_heap()
610 	struct cma *cma = rk_dma_heap_get_cma();  in rk_add_default_cma_heap()  local
612 	if (WARN_ON(!cma))  in rk_add_default_cma_heap()
615 	return __rk_add_cma_heap(cma, NULL);  in rk_add_default_cma_heap()
638 static void cma_procfs_show_bitmap(struct seq_file *s, struct cma *cma)  in cma_procfs_show_bitmap()  argument
640 	int elements = DIV_ROUND_UP(cma_bitmap_maxno(cma), BITS_PER_BYTE * sizeof(u32));  in cma_procfs_show_bitmap()
642 	u32 *array = (u32 *)cma->bitmap;  in cma_procfs_show_bitmap()
656 static u64 cma_procfs_used_get(struct cma *cma)  in cma_procfs_used_get()  argument
660 	mutex_lock(&cma->lock);  in cma_procfs_used_get()
661 	used = bitmap_weight(cma->bitmap, (int)cma_bitmap_maxno(cma));  in cma_procfs_used_get()
662 	mutex_unlock(&cma->lock);  in cma_procfs_used_get()
664 	return (u64)used << cma->order_per_bit;  in cma_procfs_used_get()
669 	struct cma *cma = s->private;  in cma_procfs_show()  local
670 	u64 used = cma_procfs_used_get(cma);  in cma_procfs_show()
672 	seq_printf(s, "Total: %lu KiB\n", cma->count << (PAGE_SHIFT - 10));  in cma_procfs_show()
675 	cma_procfs_show_bitmap(s, cma);  in cma_procfs_show()
680 MODULE_DESCRIPTION("RockChip DMA-BUF CMA Heap");