Ejemplos de ipath_write_umem64 en C++ (Cpp)

Ejemplo n.º 1

Archivo: ipath_diag.c Proyecto: ivucica/linux

static ssize_t ipath_diag_write(struct file *fp, const char __user *data,
				size_t count, loff_t *off)
{
	struct ipath_devdata *dd = fp->private_data;
	void __iomem *kreg_base;
	ssize_t ret;

	kreg_base = dd->ipath_kregbase;

	if (count == 0)
		ret = 0;
	else if ((count % 4) || (*off % 4))
		/* address or length is not 32-bit aligned, hence invalid */
		ret = -EINVAL;
	else if ((count % 8) || (*off % 8))
		/* address or length not 64-bit aligned; do 32-bit writes */
		ret = ipath_write_umem32(dd, kreg_base + *off, data, count);
	else
		ret = ipath_write_umem64(dd, kreg_base + *off, data, count);

	if (ret >= 0) {
		*off += count;
		ret = count;
	}

	return ret;
}

Ejemplo n.º 2

Archivo: ipath_diag.c Proyecto: 12019/kernel_zte_u880

static ssize_t ipath_diag_write(struct file *fp, const char __user *data,
				size_t count, loff_t *off)
{
	struct ipath_devdata *dd = fp->private_data;
	void __iomem *kreg_base;
	ssize_t ret;

	kreg_base = dd->ipath_kregbase;

	if (count == 0)
		ret = 0;
	else if ((count % 4) || (*off % 4))
		/* address or length is not 32-bit aligned, hence invalid */
		ret = -EINVAL;
	else if ((ipath_diag_inuse == -1 && (*off || count != 8)) ||
		 ipath_diag_inuse == -2)  /* read qw off 0, write qw off 0 */
		ret = -EINVAL;  /* before any other write allowed */
	else if ((count % 8) || (*off % 8))
		/* address or length not 64-bit aligned; do 32-bit writes */
		ret = ipath_write_umem32(dd, kreg_base + *off, data, count);
	else
		ret = ipath_write_umem64(dd, kreg_base + *off, data, count);

	if (ret >= 0) {
		*off += count;
		ret = count;
		if (ipath_diag_inuse == -1)
			ipath_diag_inuse = 1; /* all read/write OK now */
	}

	return ret;
}