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gpu: nvgpu: APIs to dump GR status

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Add below APIs to dump various GR status registers

1. debugfs : /d/gpu.0/gr_status
Read this debugfs at runtime to get status registers

2. API gk20a_gr_debug_dump()
Add this API in code to dump registers at any point

Bug 200062436

Change-Id: Ic1115b5a2fc16362954b5ed8a9e70afb872a8d91
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-on: http://git-master/r/486465
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Tested-by: Terje Bergstrom <tbergstrom@nvidia.com>
This commit is contained in:
Deepak Nibade
2015-01-28 18:37:00 +05:30
committed by Dan Willemsen
parent aa96b6bd1e
commit bc1b5fdd56
7 changed files with 611 additions and 1 deletions
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60
drivers/gpu/nvgpu/gk20a/debug_gk20a.c
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@@ -83,7 +83,7 @@ static inline void gk20a_debug_write_to_seqfile(void *ctx, const char *str,
seq_write((struct seq_file *)ctx, str, len);
}
static void gk20a_debug_output(struct gk20a_debug_output *o,
void gk20a_debug_output(struct gk20a_debug_output *o,
const char *fmt, ...)
{
va_list args;
@@ -223,6 +223,50 @@ void gk20a_debug_show_dump(struct gk20a *g, struct gk20a_debug_output *o)
gk20a_idle(g->dev);
}
static int gk20a_gr_dump_regs(struct platform_device *pdev,
struct gk20a_debug_output *o)
{
struct gk20a_platform *platform = gk20a_get_platform(pdev);
struct gk20a *g = platform->g;
int err;
err = gk20a_busy(g->dev);
if (err) {
gk20a_err(&pdev->dev, "failed to power on gpu: %d\n", err);
return -EINVAL;
}
gr_gk20a_elpg_protected_call(g, g->ops.gr.dump_gr_regs(g, o));
gk20a_idle(g->dev);
return 0;
}
int gk20a_gr_debug_dump(struct platform_device *pdev)
{
struct gk20a_debug_output o = {
.fn = gk20a_debug_write_printk
};
gk20a_gr_dump_regs(pdev, &o);
return 0;
}
static int gk20a_gr_debug_show(struct seq_file *s, void *unused)
{
struct platform_device *pdev = s->private;
struct gk20a_debug_output o = {
.fn = gk20a_debug_write_to_seqfile,
.ctx = s,
};
gk20a_gr_dump_regs(pdev, &o);
return 0;
}
void gk20a_debug_dump(struct platform_device *pdev)
{
struct gk20a_platform *platform = gk20a_get_platform(pdev);
@@ -277,11 +321,23 @@ static int gk20a_debug_show(struct seq_file *s, void *unused)
return 0;
}
static int gk20a_gr_debug_open(struct inode *inode, struct file *file)
{
return single_open(file, gk20a_gr_debug_show, inode->i_private);
}
static int gk20a_debug_open(struct inode *inode, struct file *file)
{
return single_open(file, gk20a_debug_show, inode->i_private);
}
static const struct file_operations gk20a_gr_debug_fops = {
.open = gk20a_gr_debug_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
static const struct file_operations gk20a_debug_fops = {
.open = gk20a_debug_open,
.read = seq_read,
@@ -306,6 +362,8 @@ void gk20a_debug_init(struct platform_device *pdev)
debugfs_create_file("status", S_IRUGO, platform->debugfs,
pdev, &gk20a_debug_fops);
debugfs_create_file("gr_status", S_IRUGO, platform->debugfs,
pdev, &gk20a_gr_debug_fops);
debugfs_create_u32("trace_cmdbuf", S_IRUGO|S_IWUSR, platform->debugfs,
&gk20a_debug_trace_cmdbuf);