示例#1
0
文件: qib_fs.c 项目: 01org/qib
/* read the per-port counters for port 2 (pidx 1) */
static ssize_t portcntrs_2_read(struct file *file, char __user *buf,
				size_t count, loff_t *ppos)
{
	u64 *counters;
	struct qib_devdata *dd = private2dd(file);

	return simple_read_from_buffer(buf, count, ppos, counters,
		dd->f_read_portcntrs(dd, *ppos, 1, NULL, &counters));
}
示例#2
0
文件: qib_fs.c 项目: 01org/qib
/* read the per-port names (same for each port) */
static ssize_t portnames_read(struct file *file, char __user *buf,
			      size_t count, loff_t *ppos)
{
	char *names;
	struct qib_devdata *dd = private2dd(file);

	return simple_read_from_buffer(buf, count, ppos, names,
		dd->f_read_portcntrs(dd, *ppos, 0, &names, NULL));
}
示例#3
0
文件: qib_fs.c 项目: Tyler-D/RXE
/* read the per-device counters */
static ssize_t dev_names_read(struct file *file, char __user *buf,
			      size_t count, loff_t *ppos)
{
	char *names;
	size_t avail;
	struct qib_devdata *dd = private2dd(file);

	avail = dd->f_read_cntrs(dd, *ppos, &names, NULL);
	return simple_read_from_buffer(buf, count, ppos, names, avail);
}
示例#4
0
文件: qib_fs.c 项目: Tyler-D/RXE
static ssize_t flash_read(struct file *file, char __user *buf,
			  size_t count, loff_t *ppos)
{
	struct qib_devdata *dd;
	ssize_t ret;
	loff_t pos;
	char *tmp;

	pos = *ppos;

	if (pos < 0) {
		ret = -EINVAL;
		goto bail;
	}

	if (pos >= sizeof(struct qib_flash)) {
		ret = 0;
		goto bail;
	}

	if (count > sizeof(struct qib_flash) - pos)
		count = sizeof(struct qib_flash) - pos;

	tmp = kmalloc(count, GFP_KERNEL);
	if (!tmp) {
		ret = -ENOMEM;
		goto bail;
	}

	dd = private2dd(file);
	if (qib_eeprom_read(dd, pos, tmp, count)) {
		qib_dev_err(dd, "failed to read from flash\n");
		ret = -ENXIO;
		goto bail_tmp;
	}

	if (copy_to_user(buf, tmp, count)) {
		ret = -EFAULT;
		goto bail_tmp;
	}

	*ppos = pos + count;
	ret = count;

bail_tmp:
	kfree(tmp);

bail:
	return ret;
}
示例#5
0
文件: qib_fs.c 项目: Tyler-D/RXE
static ssize_t flash_write(struct file *file, const char __user *buf,
			   size_t count, loff_t *ppos)
{
	struct qib_devdata *dd;
	ssize_t ret;
	loff_t pos;
	char *tmp;

	pos = *ppos;

	if (pos != 0) {
		ret = -EINVAL;
		goto bail;
	}

	if (count != sizeof(struct qib_flash)) {
		ret = -EINVAL;
		goto bail;
	}

	tmp = kmalloc(count, GFP_KERNEL);
	if (!tmp) {
		ret = -ENOMEM;
		goto bail;
	}

	if (copy_from_user(tmp, buf, count)) {
		ret = -EFAULT;
		goto bail_tmp;
	}

	dd = private2dd(file);
	if (qib_eeprom_write(dd, pos, tmp, count)) {
		ret = -ENXIO;
		qib_dev_err(dd, "failed to write to flash\n");
		goto bail_tmp;
	}

	*ppos = pos + count;
	ret = count;

bail_tmp:
	kfree(tmp);

bail:
	return ret;
}
示例#6
0
文件: qib_fs.c 项目: Tyler-D/RXE
/*
 * read the per-port QSFP data for port 1 (pidx 0)
 */
static ssize_t qsfp_1_read(struct file *file, char __user *buf,
			   size_t count, loff_t *ppos)
{
	struct qib_devdata *dd = private2dd(file);
	char *tmp;
	int ret;

	tmp = kmalloc(PAGE_SIZE, GFP_KERNEL);
	if (!tmp)
		return -ENOMEM;

	ret = qib_qsfp_dump(dd->pport, tmp, PAGE_SIZE);
	if (ret > 0)
		ret = simple_read_from_buffer(buf, count, ppos, tmp, ret);
	kfree(tmp);
	return ret;
}