[Intel-gfx] [PATCH dii-client 6/9] drm/i915/debugfs: Multiplex upper layer interfaces to act on all gt's

[Radhakrishna Sripada <radhakrishna.sripada@intel.com>]

From: Andi Shyti <andi.shyti@linux.intel.com>

Commit 82a149a62b6b5 ('drm/i915/gt: move remaining debugfs
interfaces into gt') moves gt related debugfs files in the gtX/
directories to act on specific gt's individually.

The original files are kept intact in the same location in order
to not break userspace users. But they were performing only on
the root tile (tile 0).

Add a multiplexing functionality to the higher directories files
so that they can perform the operations on all the tiles in a
with a single write.

In the read case they provide an or'ed value amongst the tiles.

Cc: Maciej Patelczyk <maciej.patelczyk@intel.com>
Signed-off-by: Andi Shyti <andi.shyti@linux.intel.com>
Signed-off-by: Radhakrishna Sripada <radhakrishna.sripada@intel.com>
---
 drivers/gpu/drm/i915/i915_debugfs.c | 38 ++++++++++++++++++++++++++---
 1 file changed, 34 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
index a356ca490159..d64e9e3a439d 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -575,14 +575,36 @@ static int i915_wa_registers(struct seq_file *m, void *unused)
 static int i915_wedged_get(void *data, u64 *val)
 {
 	struct drm_i915_private *i915 = data;
+	struct intel_gt *gt;
+	unsigned int i;
 
-	return intel_gt_debugfs_reset_show(to_gt(i915), val);
+	*val = 0;
+
+	for_each_gt(gt, i915, i) {
+		int ret;
+		u64 v;
+
+		ret = intel_gt_debugfs_reset_show(gt, &v);
+		if (ret)
+			return ret;
+
+		/* at least one tile should be wedged */
+		*val |= !!v;
+		if (*val)
+			break;
+	}
+
+	return 0;
 }
 
 static int i915_wedged_set(void *data, u64 val)
 {
 	struct drm_i915_private *i915 = data;
-	intel_gt_debugfs_reset_store(to_gt(i915), val);
+	struct intel_gt *gt;
+	unsigned int i;
+
+	for_each_gt(gt, i915, i)
+		intel_gt_debugfs_reset_store(gt, val);
 
 	return 0;
 }
@@ -732,7 +754,11 @@ static int i915_sseu_status(struct seq_file *m, void *unused)
 static int i915_forcewake_open(struct inode *inode, struct file *file)
 {
 	struct drm_i915_private *i915 = inode->i_private;
-	intel_gt_pm_debugfs_forcewake_user_open(to_gt(i915));
+	struct intel_gt *gt;
+	unsigned int i;
+
+	for_each_gt(gt, i915, i)
+		intel_gt_pm_debugfs_forcewake_user_open(gt);
 
 	return 0;
 }
@@ -740,7 +766,11 @@ static int i915_forcewake_open(struct inode *inode, struct file *file)
 static int i915_forcewake_release(struct inode *inode, struct file *file)
 {
 	struct drm_i915_private *i915 = inode->i_private;
-	intel_gt_pm_debugfs_forcewake_user_release(to_gt(i915));
+	struct intel_gt *gt;
+	unsigned int i;
+
+	for_each_gt(gt, i915, i)
+		intel_gt_pm_debugfs_forcewake_user_release(gt);
 
 	return 0;
 }
-- 
2.34.1