gpu: nvgpu: add CILP support for gp10b

Add CILP support for gp10b by defining below function
pointers (with detailed explanation)

pre_process_sm_exception()
- for CILP enabled channels, get the mask of errors
- if we need to broadcast the stop_trigger, suspend all SMs
- otherwise suspend only current SM
- clear hww_global_esr values in h/w
- gr_gp10b_set_cilp_preempt_pending()
  - get ctx_id
  - using sideband method, program FECS to generate
    interrupt on next ctxsw
  - disable and preempt the channel/TSG
  - set cilp_preempt_pending = true
- clear single step mode
- resume current SM

handle_fecs_error()
- we get ctxsw_intr1 upon next ctxsw
- clear this interrupt
- get handle of channel on which we first
  triggered SM exception
- gr_gp10b_clear_cilp_preempt_pending()
  - set cilp_preempt_pending = false
- send events to channel and debug session fd

Bug 200156699

Change-Id: Ia765db47e68fb968fada6409609af505c079df53
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-on: http://git-master/r/925897
GVS: Gerrit_Virtual_Submit
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>

1 files changed, 5 insertions, 1 deletions

diff --git a/drivers/gpu/nvgpu/gp10b/hw_ctxsw_prog_gp10b.h b/drivers/gpu/nvgpu/gp10b/hw_ctxsw_prog_gp10b.h
index f358d405..49e92df9 100644
--- a/drivers/gpu/nvgpu/gp10b/hw_ctxsw_prog_gp10b.h
+++ b/drivers/gpu/nvgpu/gp10b/hw_ctxsw_prog_gp10b.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2014-2015, NVIDIA CORPORATION.  All rights reserved.
+ * Copyright (c) 2014-2016, NVIDIA CORPORATION.  All rights reserved.
  *
  * This program is free software; you can redistribute it and/or modify it
  * under the terms and conditions of the GNU General Public License,
@@ -286,4 +286,8 @@ static inline u32 ctxsw_prog_main_image_compute_preemption_options_control_cilp_
 {
         return 0x2;
 }
+static inline u32 ctxsw_prog_main_image_context_id_o(void)
+{
+        return 0x000000f0;
+}
 #endif