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yaml
---
r: 217717
b: refs/heads/master
c: 9e8d1fa
h: refs/heads/master
i:
  217715: e3a26ff
v: v3
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Steve Wise authored and Roland Dreier committed Sep 28, 2010
1 parent 7250aaa commit 1dced02
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Showing 2 changed files with 114 additions and 40 deletions.
2 changes: 1 addition & 1 deletion [refs]
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Original file line number Diff line number Diff line change
@@ -1,2 +1,2 @@
---
refs/heads/master: 05fb9629473690e4be4112f22e1adeb1fe4ad733
refs/heads/master: 9e8d1fa3420f489da8a5da47c026511aa71fa50b
152 changes: 113 additions & 39 deletions trunk/drivers/infiniband/hw/cxgb4/device.c
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Original file line number Diff line number Diff line change
Expand Up @@ -49,29 +49,57 @@ static DEFINE_MUTEX(dev_mutex);

static struct dentry *c4iw_debugfs_root;

struct debugfs_qp_data {
struct c4iw_debugfs_data {
struct c4iw_dev *devp;
char *buf;
int bufsize;
int pos;
};

static int count_qps(int id, void *p, void *data)
static int count_idrs(int id, void *p, void *data)
{
struct c4iw_qp *qp = p;
int *countp = data;

if (id != qp->wq.sq.qid)
return 0;

*countp = *countp + 1;
return 0;
}

static int dump_qps(int id, void *p, void *data)
static ssize_t debugfs_read(struct file *file, char __user *buf, size_t count,
loff_t *ppos)
{
struct c4iw_debugfs_data *d = file->private_data;
loff_t pos = *ppos;
loff_t avail = d->pos;

if (pos < 0)
return -EINVAL;
if (pos >= avail)
return 0;
if (count > avail - pos)
count = avail - pos;

while (count) {
size_t len = 0;

len = min((int)count, (int)d->pos - (int)pos);
if (copy_to_user(buf, d->buf + pos, len))
return -EFAULT;
if (len == 0)
return -EINVAL;

buf += len;
pos += len;
count -= len;
}
count = pos - *ppos;
*ppos = pos;
return count;
}

static int dump_qp(int id, void *p, void *data)
{
struct c4iw_qp *qp = p;
struct debugfs_qp_data *qpd = data;
struct c4iw_debugfs_data *qpd = data;
int space;
int cc;

Expand Down Expand Up @@ -101,7 +129,7 @@ static int dump_qps(int id, void *p, void *data)

static int qp_release(struct inode *inode, struct file *file)
{
struct debugfs_qp_data *qpd = file->private_data;
struct c4iw_debugfs_data *qpd = file->private_data;
if (!qpd) {
printk(KERN_INFO "%s null qpd?\n", __func__);
return 0;
Expand All @@ -113,7 +141,7 @@ static int qp_release(struct inode *inode, struct file *file)

static int qp_open(struct inode *inode, struct file *file)
{
struct debugfs_qp_data *qpd;
struct c4iw_debugfs_data *qpd;
int ret = 0;
int count = 1;

Expand All @@ -126,7 +154,7 @@ static int qp_open(struct inode *inode, struct file *file)
qpd->pos = 0;

spin_lock_irq(&qpd->devp->lock);
idr_for_each(&qpd->devp->qpidr, count_qps, &count);
idr_for_each(&qpd->devp->qpidr, count_idrs, &count);
spin_unlock_irq(&qpd->devp->lock);

qpd->bufsize = count * 128;
Expand All @@ -137,7 +165,7 @@ static int qp_open(struct inode *inode, struct file *file)
}

spin_lock_irq(&qpd->devp->lock);
idr_for_each(&qpd->devp->qpidr, dump_qps, qpd);
idr_for_each(&qpd->devp->qpidr, dump_qp, qpd);
spin_unlock_irq(&qpd->devp->lock);

qpd->buf[qpd->pos++] = 0;
Expand All @@ -149,43 +177,84 @@ static int qp_open(struct inode *inode, struct file *file)
return ret;
}

static ssize_t qp_read(struct file *file, char __user *buf, size_t count,
loff_t *ppos)
static const struct file_operations qp_debugfs_fops = {
.owner = THIS_MODULE,
.open = qp_open,
.release = qp_release,
.read = debugfs_read,
};

static int dump_stag(int id, void *p, void *data)
{
struct debugfs_qp_data *qpd = file->private_data;
loff_t pos = *ppos;
loff_t avail = qpd->pos;
struct c4iw_debugfs_data *stagd = data;
int space;
int cc;

if (pos < 0)
return -EINVAL;
if (pos >= avail)
space = stagd->bufsize - stagd->pos - 1;
if (space == 0)
return 1;

cc = snprintf(stagd->buf + stagd->pos, space, "0x%x\n", id<<8);
if (cc < space)
stagd->pos += cc;
return 0;
}

static int stag_release(struct inode *inode, struct file *file)
{
struct c4iw_debugfs_data *stagd = file->private_data;
if (!stagd) {
printk(KERN_INFO "%s null stagd?\n", __func__);
return 0;
if (count > avail - pos)
count = avail - pos;
}
kfree(stagd->buf);
kfree(stagd);
return 0;
}

while (count) {
size_t len = 0;
static int stag_open(struct inode *inode, struct file *file)
{
struct c4iw_debugfs_data *stagd;
int ret = 0;
int count = 1;

len = min((int)count, (int)qpd->pos - (int)pos);
if (copy_to_user(buf, qpd->buf + pos, len))
return -EFAULT;
if (len == 0)
return -EINVAL;
stagd = kmalloc(sizeof *stagd, GFP_KERNEL);
if (!stagd) {
ret = -ENOMEM;
goto out;
}
stagd->devp = inode->i_private;
stagd->pos = 0;

buf += len;
pos += len;
count -= len;
spin_lock_irq(&stagd->devp->lock);
idr_for_each(&stagd->devp->mmidr, count_idrs, &count);
spin_unlock_irq(&stagd->devp->lock);

stagd->bufsize = count * sizeof("0x12345678\n");
stagd->buf = kmalloc(stagd->bufsize, GFP_KERNEL);
if (!stagd->buf) {
ret = -ENOMEM;
goto err1;
}
count = pos - *ppos;
*ppos = pos;
return count;

spin_lock_irq(&stagd->devp->lock);
idr_for_each(&stagd->devp->mmidr, dump_stag, stagd);
spin_unlock_irq(&stagd->devp->lock);

stagd->buf[stagd->pos++] = 0;
file->private_data = stagd;
goto out;
err1:
kfree(stagd);
out:
return ret;
}

static const struct file_operations qp_debugfs_fops = {
static const struct file_operations stag_debugfs_fops = {
.owner = THIS_MODULE,
.open = qp_open,
.release = qp_release,
.read = qp_read,
.open = stag_open,
.release = stag_release,
.read = debugfs_read,
};

static int setup_debugfs(struct c4iw_dev *devp)
Expand All @@ -199,6 +268,11 @@ static int setup_debugfs(struct c4iw_dev *devp)
(void *)devp, &qp_debugfs_fops);
if (de && de->d_inode)
de->d_inode->i_size = 4096;

de = debugfs_create_file("stags", S_IWUSR, devp->debugfs_root,
(void *)devp, &stag_debugfs_fops);
if (de && de->d_inode)
de->d_inode->i_size = 4096;
return 0;
}

Expand Down

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