[COMMON] g2d: add afbc debugging information

Show the internal state on AFBC decoder core when timeout
or error interrupt, mmu fault happens.

Change-Id: Ia2ae7cdc4137c7e2ef8ba3eb4dc86c7128915e9c
Signed-off-by: hyesoo.yu <hyesoo.yu@samsung.com>

diff --git a/drivers/gpu/exynos/g2d/g2d_debug.c b/drivers/gpu/exynos/g2d/g2d_debug.c
index 2e4099b11d75b5764674c0b0f816c801db4d166b..ff8bd8db76684f53178d0a437498c3db7fde1664 100644 (file)
--- a/drivers/gpu/exynos/g2d/g2d_debug.c
+++ b/drivers/gpu/exynos/g2d/g2d_debug.c
@@ -21,6 +21,7 @@
 #include "g2d_task.h"
 #include "g2d_uapi.h"
 #include "g2d_debug.h"
+#include "g2d_regs.h"
 
 static unsigned int g2d_debug;
 
@@ -142,6 +143,27 @@ static struct regs_info g2d_reg_info[] = {
                { 0x1100,       0x100,  "Layer15" },
 };
 
+#define G2D_COMP_DEBUG_DATA_COUNT 16
+
+void g2d_dump_afbcdata(struct g2d_task *task)
+{
+       struct g2d_device *g2d_dev = task->g2d_dev;
+       int i, cluster;
+       u32 cfg;
+
+       for (cluster = 0; cluster < 2; cluster++) {
+               for (i = 0; i < G2D_COMP_DEBUG_DATA_COUNT; i++) {
+                       writel_relaxed(i | cluster << 5,
+                               g2d_dev->reg + G2D_COMP_DEBUG_ADDR_REG);
+                       cfg = readl_relaxed(
+                               g2d_dev->reg + G2D_COMP_DEBUG_DATA_REG);
+
+                       pr_err("AFBC_DEBUGGING_DATA cluster%d [%d] %#x",
+                               cluster, i, cfg);
+               }
+       }
+}
+
 void g2d_dump_task(struct g2d_task *task)
 {
        struct g2d_device *g2d_dev = task->g2d_dev;
@@ -176,6 +198,8 @@ void g2d_stamp_task(struct g2d_task *task, u32 val, s32 info)
                stamp->job_id = task->job_id;
                stamp->task = task;
        } else {
+               stamp->job_id = 0;
+               stamp->state = 0;
                stamp->task = NULL;
        }
 
@@ -184,11 +208,21 @@ void g2d_stamp_task(struct g2d_task *task, u32 val, s32 info)
        stamp->cpu = smp_processor_id();
        stamp->info = info;
 
-       /* when error status, dump the task */
-       if ((stamp->val == G2D_STAMP_STATE_TIMEOUT_HW) ||
-               (stamp->val == G2D_STAMP_STATE_ERR_INT) ||
-               (stamp->val == G2D_STAMP_STATE_MMUFAULT))
+       /*
+        * If it happens error interrupts, mmu errors, and H/W timeouts,
+        * dump the SFR and job command list. However, debugging messages
+        * do not print in this case, that if the task is queued or suspended,
+        * or if the task has already been processed in the interrupt
+        * although H/W timeout happens.
+        */
+       if ((stamp->val == G2D_STAMP_STATE_ERR_INT) ||
+               (stamp->val == G2D_STAMP_STATE_MMUFAULT) ||
+               ((stamp->val == G2D_STAMP_STATE_TIMEOUT_HW) &&
+                ((stamp->info == G2D_JOB_STATE_RUNNING) ||
+                 is_task_state_active(task)))) {
                g2d_dump_task(task);
+               g2d_dump_afbcdata(task);
+       }
 
        if (stamp->val == G2D_STAMP_STATE_DONE) {
                if (g2d_debug == 1) {

diff --git a/drivers/gpu/exynos/g2d/g2d_task.c b/drivers/gpu/exynos/g2d/g2d_task.c
index 98ea760194bd37222ef011feeae2ba0b910eb321..0a6d0f01e9b9e594c6a074f9b628af5ffcbb0165 100644 (file)
--- a/drivers/gpu/exynos/g2d/g2d_task.c
+++ b/drivers/gpu/exynos/g2d/g2d_task.c
@@ -125,11 +125,11 @@ static void g2d_finish_task(struct g2d_device *g2d_dev,
 
        task->ktime_end = ktime_get();
 
+       del_timer(&task->timer);
+
        g2d_stamp_task(task, G2D_STAMP_STATE_DONE,
                (int)ktime_us_delta(task->ktime_end, task->ktime_begin));
 
-       del_timer(&task->timer);
-
        g2d_secure_disable();
 
        clk_disable(g2d_dev->clock);