C++ (Cpp) plat_map_dma_mem Beispiele

Beispiel #1

static void *mips_dma_alloc_coherent(struct device *dev, size_t size,
	dma_addr_t * dma_handle, gfp_t gfp)
{
	void *ret;

	if (dma_alloc_from_coherent(dev, size, dma_handle, &ret))
		return ret;

	gfp = massage_gfp_flags(dev, gfp);

	ret = (void *) __get_free_pages(gfp, get_order(size));

	if (ret) {
		memset(ret, 0, size);
		*dma_handle = plat_map_dma_mem(dev, ret, size);

		if (!plat_device_is_coherent(dev)) {
			dma_cache_wback_inv((unsigned long) ret, size);
#ifdef CONFIG_BRCM_CONSISTENT_DMA
			if (brcm_map_coherent(*dma_handle, ret, PFN_ALIGN(size),
					&ret, gfp)) {
				free_pages((unsigned long)ret, size);
				ret = NULL;
			}
#else
			ret = UNCAC_ADDR(ret);
#endif
		}
	}

	return ret;
}

Beispiel #2

Datei: dma-default.c Projekt: card2000/VDLinux_2.6.35.11

void *dma_alloc_coherent(struct device *dev, size_t size,
	dma_addr_t * dma_handle, gfp_t gfp)
{
#ifdef CONFIG_MSTAR_CHIP
	extern int hw_coherentio;
#endif
	void *ret;

	if (dma_alloc_from_coherent(dev, size, dma_handle, &ret))
		return ret;

	gfp = massage_gfp_flags(dev, gfp);

	ret = (void *) __get_free_pages(gfp, get_order(size));

	if (ret) {
		memset(ret, 0, size);
		*dma_handle = plat_map_dma_mem(dev, ret, size);

		if (!plat_device_is_coherent(dev)) {
			dma_cache_wback_inv((unsigned long) ret, size);
#ifdef CONFIG_MSTAR_CHIP
			if (!hw_coherentio)
#endif
			ret = UNCAC_ADDR(ret);
		}
	}

	return ret;
}

Beispiel #3

Datei: dma-default.c Projekt: 212006949/linux

static void *mips_dma_alloc_coherent(struct device *dev, size_t size,
	dma_addr_t * dma_handle, gfp_t gfp, struct dma_attrs *attrs)
{
	void *ret;

	if (dma_alloc_from_coherent(dev, size, dma_handle, &ret))
		return ret;

	gfp = massage_gfp_flags(dev, gfp);

	ret = (void *) __get_free_pages(gfp, get_order(size));

	if (ret) {
		memset(ret, 0, size);
		*dma_handle = plat_map_dma_mem(dev, ret, size);

		if (!plat_device_is_coherent(dev)) {
			dma_cache_wback_inv((unsigned long) ret, size);
			if (!hw_coherentio)
				ret = UNCAC_ADDR(ret);
		}
	}

	return ret;
}

Beispiel #4

Datei: dma-default.c Projekt: Daniel-Abrecht/linux

static void *mips_dma_alloc_coherent(struct device *dev, size_t size,
	dma_addr_t *dma_handle, gfp_t gfp, unsigned long attrs)
{
	void *ret;
	struct page *page = NULL;
	unsigned int count = PAGE_ALIGN(size) >> PAGE_SHIFT;

	gfp = massage_gfp_flags(dev, gfp);

	if (IS_ENABLED(CONFIG_DMA_CMA) && gfpflags_allow_blocking(gfp))
		page = dma_alloc_from_contiguous(dev, count, get_order(size),
						 gfp);
	if (!page)
		page = alloc_pages(gfp, get_order(size));

	if (!page)
		return NULL;

	ret = page_address(page);
	memset(ret, 0, size);
	*dma_handle = plat_map_dma_mem(dev, ret, size);
	if (!(attrs & DMA_ATTR_NON_CONSISTENT) &&
	    !plat_device_is_coherent(dev)) {
		dma_cache_wback_inv((unsigned long) ret, size);
		ret = UNCAC_ADDR(ret);
	}

	return ret;
}

Beispiel #5

Datei: dma-default.c Projekt: IgnasD/Tomato-RAF

int dma_map_sg(struct device *dev, struct scatterlist *sg, int nents,
	enum dma_data_direction direction)
{
	int i;

	BUG_ON(direction == DMA_NONE);

	for (i = 0; i < nents; i++, sg++) {
		unsigned long addr;

#ifdef CONFIG_HIGHMEM
		if (PageHighMem(sg->page)) {
			dma_sync_high(sg, direction);
			sg->dma_address = (page_to_pfn(sg->page) << PAGE_SHIFT) + sg->offset;
		}
		else
#endif
		{
			addr = (unsigned long) page_address(sg->page);
			if (!plat_device_is_coherent(dev) && addr)
				__dma_sync(addr + sg->offset, sg->length, direction);
			sg->dma_address = plat_map_dma_mem(dev,
					                   (void *)(addr + sg->offset),
							   sg->length);
		}
	}

	return nents;
}

Beispiel #6

Datei: dma-default.c Projekt: card2000/VDLinux_2.6.35.11

dma_addr_t dma_map_single(struct device *dev, void *ptr, size_t size,
	enum dma_data_direction direction)
{
	unsigned long addr = (unsigned long) ptr;

	if (!plat_device_is_coherent(dev))
		__dma_sync(addr, size, direction);

	return plat_map_dma_mem(dev, ptr, size);
}

Beispiel #7

Datei: dma-default.c Projekt: andy-padavan/rt-n56u

static dma_addr_t mips_dma_map_page(struct device *dev, struct page *page,
	unsigned long offset, size_t size, enum dma_data_direction direction,
	struct dma_attrs *attrs)
{
	unsigned long addr;

	addr = (unsigned long) page_address(page) + offset;

	if (!plat_device_is_coherent(dev))
		__dma_sync(addr, size, direction);

	return plat_map_dma_mem(dev, (void *)addr, size);
}

Beispiel #8

Datei: dma-default.c Projekt: card2000/VDLinux_2.6.35.11

void *dma_alloc_noncoherent(struct device *dev, size_t size,
	dma_addr_t * dma_handle, gfp_t gfp)
{
	void *ret;

	gfp = massage_gfp_flags(dev, gfp);

	ret = (void *) __get_free_pages(gfp, get_order(size));

	if (ret != NULL) {
		memset(ret, 0, size);
		*dma_handle = plat_map_dma_mem(dev, ret, size);
	}

	return ret;
}

Beispiel #9

Datei: dma-default.c Projekt: andy-padavan/rt-n56u

static int mips_dma_map_sg(struct device *dev, struct scatterlist *sg,
	int nents, enum dma_data_direction direction, struct dma_attrs *attrs)
{
	int i;

	for (i = 0; i < nents; i++, sg++) {
		unsigned long addr;

		addr = (unsigned long) sg_virt(sg);
		if (!plat_device_is_coherent(dev) && addr)
			__dma_sync(addr, sg->length, direction);
		sg->dma_address = plat_map_dma_mem(dev,
				                   (void *)addr, sg->length);
	}

	return nents;
}

Beispiel #10

Datei: dma-default.c Projekt: cilynx/dd-wrt

void *dma_alloc_noncoherent(struct device *dev, size_t size,
	dma_addr_t * dma_handle, gfp_t gfp)
{
	void *ret;

	/* ignore region specifiers */
	gfp &= ~(__GFP_DMA | __GFP_HIGHMEM);

	if (dev == NULL || (dev->coherent_dma_mask < 0xffffffff))
		gfp |= GFP_DMA;
	ret = (void *) __get_free_pages(gfp, get_order(size));

	if (ret != NULL) {
		memset(ret, 0, size);
		*dma_handle = plat_map_dma_mem(dev, ret, size);
	}

	return ret;
}

Beispiel #11

Datei: dma-default.c Projekt: cilynx/dd-wrt

int dma_map_sg(struct device *dev, struct scatterlist *sg, int nents,
	enum dma_data_direction direction)
{
	int i;

	BUG_ON(direction == DMA_NONE);

	for (i = 0; i < nents; i++, sg++) {
		unsigned long addr;

		addr = (unsigned long) page_address(sg->page);
		if (!plat_device_is_coherent(dev) && addr)
			__dma_sync(addr + sg->offset, sg->length, direction);
		sg->dma_address = plat_map_dma_mem(dev,
				                   (void *)(addr + sg->offset),
						   sg->length);
	}

	return nents;
}

Beispiel #12

Datei: dma-default.c Projekt: cilynx/dd-wrt

void *dma_alloc_coherent(struct device *dev, size_t size,
	dma_addr_t * dma_handle, gfp_t gfp)
{
	void *ret;

	/* ignore region specifiers */
	gfp &= ~(__GFP_DMA | __GFP_HIGHMEM);

	if (dev == NULL || (dev->coherent_dma_mask < 0xffffffff))
		gfp |= GFP_DMA;
	ret = (void *) __get_free_pages(gfp, get_order(size));

	if (ret) {
		memset(ret, 0, size);
		*dma_handle = plat_map_dma_mem(dev, ret, size);

		if (!plat_device_is_coherent(dev)) {
			dma_cache_wback_inv((unsigned long) ret, size);
			ret = UNCAC_ADDR(ret);
		}
	}

	return ret;
}

Beispiel #13

Datei: dma-default.c Projekt: DenisLug/mptcp

static void *mips_dma_alloc_coherent(struct device *dev, size_t size,
	dma_addr_t * dma_handle, gfp_t gfp, struct dma_attrs *attrs)
{
	void *ret;
	struct page *page = NULL;
	unsigned int count = PAGE_ALIGN(size) >> PAGE_SHIFT;

	/*
	 * XXX: seems like the coherent and non-coherent implementations could
	 * be consolidated.
	 */
	if (dma_get_attr(DMA_ATTR_NON_CONSISTENT, attrs))
		return mips_dma_alloc_noncoherent(dev, size, dma_handle, gfp);

	gfp = massage_gfp_flags(dev, gfp);

	if (IS_ENABLED(CONFIG_DMA_CMA) && !(gfp & GFP_ATOMIC))
		page = dma_alloc_from_contiguous(dev,
					count, get_order(size));
	if (!page)
		page = alloc_pages(gfp, get_order(size));

	if (!page)
		return NULL;

	ret = page_address(page);
	memset(ret, 0, size);
	*dma_handle = plat_map_dma_mem(dev, ret, size);
	if (!plat_device_is_coherent(dev)) {
		dma_cache_wback_inv((unsigned long) ret, size);
		if (!hw_coherentio)
			ret = UNCAC_ADDR(ret);
	}

	return ret;
}