[PATCH 1/2] drm/xe/pcode: Introduce xe_pcode_read_timeout() API

[Karthik Poosa <karthik.poosa@intel.com>]

Add the xe_pcode_read_timeout() helper to allow callers to specify
custom timeout values for pcode read operations.

Signed-off-by: Karthik Poosa <karthik.poosa@intel.com>
---
 drivers/gpu/drm/xe/xe_pcode.c | 11 +++++++++++
 drivers/gpu/drm/xe/xe_pcode.h |  1 +
 2 files changed, 12 insertions(+)

diff --git a/drivers/gpu/drm/xe/xe_pcode.c b/drivers/gpu/drm/xe/xe_pcode.c
index ccc3bdeed6bb..7386113e60b3 100644
--- a/drivers/gpu/drm/xe/xe_pcode.c
+++ b/drivers/gpu/drm/xe/xe_pcode.c
@@ -147,6 +147,17 @@ int xe_pcode_read(struct xe_tile *tile, u32 mbox, u32 *val, u32 *val1)
 	return err;
 }
 
+int xe_pcode_read_timeout(struct xe_tile *tile, u32 mbox, u32 *val, u32 *val1, u32 timeout_ms)
+{
+	int err;
+
+	mutex_lock(&tile->pcode.lock);
+	err = pcode_mailbox_rw(tile, mbox, val, val1, timeout_ms, true, false);
+	mutex_unlock(&tile->pcode.lock);
+
+	return err;
+}
+
 static int pcode_try_request(struct xe_tile *tile, u32 mbox,
 			     u32 request, u32 reply_mask, u32 reply,
 			     u32 *status, bool atomic, int timeout_us, bool locked)
diff --git a/drivers/gpu/drm/xe/xe_pcode.h b/drivers/gpu/drm/xe/xe_pcode.h
index 8fb3e4ba13a6..c9647c5f305e 100644
--- a/drivers/gpu/drm/xe/xe_pcode.h
+++ b/drivers/gpu/drm/xe/xe_pcode.h
@@ -24,6 +24,7 @@ int xe_pcode_ready(struct xe_device *xe, bool locked);
 int xe_pcode_init_min_freq_table(struct xe_tile *tile, u32 min_gt_freq,
 				 u32 max_gt_freq);
 int xe_pcode_read(struct xe_tile *tile, u32 mbox, u32 *val, u32 *val1);
+int xe_pcode_read_timeout(struct xe_tile *tile, u32 mbox, u32 *val, u32 *val1, u32 timeout_ms);
 int xe_pcode_write_timeout(struct xe_tile *tile, u32 mbox, u32 val,
 			   int timeout_ms);
 int xe_pcode_write64_timeout(struct xe_tile *tile, u32 mbox, u32 data0,
-- 
2.25.1