mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-15 09:36:42 +07:00
de9e14eebf
Add a function to create CMA region from previously reserved memory and add support for handling 'shared-dma-pool' reserved-memory device tree nodes. Based on previous code provided by Josh Cartwright <joshc@codeaurora.org> Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Michal Nazarewicz <mina86@mina86.com> Cc: Grant Likely <grant.likely@linaro.org> Cc: Laura Abbott <lauraa@codeaurora.org> Cc: Josh Cartwright <joshc@codeaurora.org> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Cc: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
31 lines
844 B
C
31 lines
844 B
C
#ifndef __CMA_H__
|
|
#define __CMA_H__
|
|
|
|
/*
|
|
* There is always at least global CMA area and a few optional
|
|
* areas configured in kernel .config.
|
|
*/
|
|
#ifdef CONFIG_CMA_AREAS
|
|
#define MAX_CMA_AREAS (1 + CONFIG_CMA_AREAS)
|
|
|
|
#else
|
|
#define MAX_CMA_AREAS (0)
|
|
|
|
#endif
|
|
|
|
struct cma;
|
|
|
|
extern phys_addr_t cma_get_base(struct cma *cma);
|
|
extern unsigned long cma_get_size(struct cma *cma);
|
|
|
|
extern int __init cma_declare_contiguous(phys_addr_t size,
|
|
phys_addr_t base, phys_addr_t limit,
|
|
phys_addr_t alignment, unsigned int order_per_bit,
|
|
bool fixed, struct cma **res_cma);
|
|
extern int cma_init_reserved_mem(phys_addr_t size,
|
|
phys_addr_t base, int order_per_bit,
|
|
struct cma **res_cma);
|
|
extern struct page *cma_alloc(struct cma *cma, int count, unsigned int align);
|
|
extern bool cma_release(struct cma *cma, struct page *pages, int count);
|
|
#endif
|