C++ (Cpp) buffer_icap_set_size примеры использования

Пример #1

Файл: buffer_icap.c Проект: 01org/thunderbolt-software-kernel-tree

/**
 * buffer_icap_device_write - Transfer bytes from ICAP to the storage buffer.
 * @drvdata: a pointer to the drvdata.
 * @offset: The storage buffer start address.
 * @count: The number of words (32 bit) to read from the
 *           device (ICAP).
 **/
static int buffer_icap_device_write(struct hwicap_drvdata *drvdata,
		u32 offset, u32 count)
{

	s32 retries = 0;
	void __iomem *base_address = drvdata->base_address;

	if (buffer_icap_busy(base_address))
		return -EBUSY;

	if ((offset + count) > XHI_MAX_BUFFER_INTS)
		return -EINVAL;

	/* setSize count*4 to get bytes. */
	buffer_icap_set_size(base_address, count << 2);
	buffer_icap_set_offset(base_address, offset);
	buffer_icap_set_rnc(base_address, XHI_CONFIGURE);

	while (buffer_icap_busy(base_address)) {
		retries++;
		if (retries > XHI_MAX_RETRIES)
			return -EBUSY;
	}
	return 0;

};

Пример #2

static int buffer_icap_device_read(struct hwicap_drvdata *drvdata,
		u32 offset, u32 count)
{

	s32 retries = 0;
	void __iomem *base_address = drvdata->base_address;

	if (buffer_icap_busy(base_address))
		return -EBUSY;

	if ((offset + count) > XHI_MAX_BUFFER_INTS)
		return -EINVAL;

	
	buffer_icap_set_size(base_address, (count << 2));
	buffer_icap_set_offset(base_address, offset);
	buffer_icap_set_rnc(base_address, XHI_READBACK);

	while (buffer_icap_busy(base_address)) {
		retries++;
		if (retries > XHI_MAX_RETRIES)
			return -EBUSY;
	}
	return 0;

};