C++ (Cpp) mfc_get_fw_buff_paddr示例

示例#1

文件： mfc.c 项目： ferow2k/NeatKernel_captivate

static int mfc_mmap(struct file *filp, struct vm_area_struct *vma)
{
	unsigned long vir_size = vma->vm_end - vma->vm_start;
	unsigned long phy_size, firmware_size;
	unsigned long page_frame_no = 0;
	struct mfc_inst_ctx *mfc_ctx;

	mfc_debug("vma->vm_start = 0x%08x, vma->vm_end = 0x%08x\n",
			(unsigned int)vma->vm_start,
			(unsigned int)vma->vm_end);
	mfc_debug("vma->vm_end - vma->vm_start = %ld\n", vir_size);

	mfc_ctx = (struct mfc_inst_ctx *)filp->private_data;

	firmware_size = mfc_get_port0_buff_paddr() - mfc_get_fw_buff_paddr();
	phy_size = (unsigned long)(mfc_port0_memsize - firmware_size + mfc_port1_memsize);

	/* if memory size required from appl. mmap() is bigger than max data memory
	 * size allocated in the driver */
	if (vir_size > phy_size) {
		mfc_err("virtual requested mem(%ld) is bigger than physical mem(%ld)\n",
				vir_size, phy_size);
		return -EINVAL;
	}
#ifdef CONFIG_MACH_ARIES
	mfc_ctx->port0_mmap_size = mfc_port0_memsize - firmware_size;
#else // CONFIG_MACH_P1
	mfc_ctx->port0_mmap_size = (vir_size / 2);
#endif

	vma->vm_flags |= VM_RESERVED | VM_IO;
	if (mfc_ctx->buf_type != MFC_BUFFER_CACHE)
		vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
	/*
	 * port0 mapping for stream buf & frame buf (chroma + MV)
	 */
	page_frame_no = __phys_to_pfn(mfc_get_port0_buff_paddr());
	if (remap_pfn_range(vma, vma->vm_start, page_frame_no,
		mfc_ctx->port0_mmap_size, vma->vm_page_prot)) {
		mfc_err("mfc remap port0 error\n");
		return -EAGAIN;
	}

	vma->vm_flags |= VM_RESERVED | VM_IO;
	if (mfc_ctx->buf_type != MFC_BUFFER_CACHE)
		vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
	/*
	 * port1 mapping for frame buf (luma)
	 */
	page_frame_no = __phys_to_pfn(mfc_get_port1_buff_paddr());
	if (remap_pfn_range(vma, vma->vm_start + mfc_ctx->port0_mmap_size,
		page_frame_no, vir_size - mfc_ctx->port0_mmap_size, vma->vm_page_prot)) {
		mfc_err("mfc remap port1 error\n");
		return -EAGAIN;
	}

	mfc_debug("virtual requested mem = %ld, physical reserved data mem = %ld\n", vir_size, phy_size);

	return 0;
}

示例#2

文件： mfc.c 项目： FrozenData/SGS2-Kernel-Update2

static int mfc_mmap(struct file *filp, struct vm_area_struct *vma)
{
	unsigned long vir_size = vma->vm_end - vma->vm_start;
	unsigned long phy_size, firmware_size;
	unsigned long page_frame_no = 0;
	mfc_inst_ctx *mfc_ctx;

#if	ENABLE_MONITORING_MFC_DD
	mfc_info("MFC mfc_mmap..dev_id(%d)\n",S5P_MDEV_MFC);
#endif

	mfc_debug("vma->vm_start = 0x%08x, vma->vm_end = 0x%08x\n",
			(unsigned int)vma->vm_start,
			(unsigned int)vma->vm_end);
	mfc_debug("vma->vm_end - vma->vm_start = %ld\n", vir_size);

	mfc_ctx = (mfc_inst_ctx *)filp->private_data;

	firmware_size = mfc_get_port0_buff_paddr() - mfc_get_fw_buff_paddr();
	phy_size = (unsigned long)(s5p_get_media_memory_bank(S5P_MDEV_MFC, 0) - firmware_size
			+ s5p_get_media_memory_bank(S5P_MDEV_MFC, 1));

	/* if memory size required from appl. mmap() is bigger than max data memory
	 * size allocated in the driver */
	if (vir_size > phy_size)
	{
		mfc_err("virtual requested mem(%ld) is bigger than physical mem(%ld)\n",
				vir_size, phy_size);
		return -EINVAL;
	}

	mfc_ctx->port0_mmap_size = (vir_size / 2);

	vma->vm_flags |= VM_RESERVED | VM_IO;
	vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
	/*
	 * port0 mapping for stream buf & frame buf (chroma + MV)
	 */
	page_frame_no = __phys_to_pfn(mfc_get_port0_buff_paddr());
	if (remap_pfn_range(vma, vma->vm_start, page_frame_no,
		mfc_ctx->port0_mmap_size, vma->vm_page_prot))
	{
		mfc_err("mfc remap port0 error\n");
		return -EAGAIN;
	}

	vma->vm_flags |= VM_RESERVED | VM_IO;
	vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
	/*
	 * port1 mapping for frame buf (luma)
	 */
	page_frame_no = __phys_to_pfn(mfc_get_port1_buff_paddr());
	if (remap_pfn_range(vma, vma->vm_start + mfc_ctx->port0_mmap_size,
		page_frame_no, vir_size - mfc_ctx->port0_mmap_size, vma->vm_page_prot))
	{
		mfc_err("mfc remap port1 error\n");
		return -EAGAIN;
	}

	mfc_debug("virtual requested mem = %ld, physical reserved data mem = %ld\n", vir_size, phy_size);

	return 0;
}