drm/amdkfd: pass debug exceptions to second-level trap handler

Call the 2nd level trap handler if the cwsr handler is entered with any
one of wave_start, wave_end, or trap_after_inst exceptions.
Signed-off-by: Laurent Morichetti <laurent.morichetti@amd.com>
Tested-by: Lancelot Six <lancelot.six@amd.com>
Reviewed-by: Jay Cornwall <jay.cornwall@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdkfd/cwsr_trap_handler.h

@@ -2518,7 +2518,7 @@ static const uint32_t cwsr_trap_gfx11_hex[] = {
 	0x8b6eff7b, 0x00000400,
 	0xbfa20045, 0xbf830010,
 	0xb8fbf803, 0xbfa0fffa,
-	0x8b6eff7b, 0x00000900,
+	0x8b6eff7b, 0x00160900,
 	0xbfa20015, 0x8b6eff7b,
 	0x000071ff, 0xbfa10008,
 	0x8b6fff7b, 0x00007080,

drivers/gpu/drm/amd/amdkfd/cwsr_trap_handler_gfx10.asm

@@ -81,6 +81,11 @@ var SQ_WAVE_TRAPSTS_POST_SAVECTX_SHIFT		= 11
 var SQ_WAVE_TRAPSTS_POST_SAVECTX_SIZE		= 21
 var SQ_WAVE_TRAPSTS_ILLEGAL_INST_MASK		= 0x800
 var SQ_WAVE_TRAPSTS_EXCP_HI_MASK		= 0x7000
+#if ASIC_FAMILY >= CHIP_PLUM_BONITO
+var SQ_WAVE_TRAPSTS_WAVE_START_MASK		= 0x20000
+var SQ_WAVE_TRAPSTS_WAVE_END_MASK		= 0x40000
+var SQ_WAVE_TRAPSTS_TRAP_AFTER_INST_MASK	= 0x100000
+#endif
 
 var SQ_WAVE_MODE_EXCP_EN_SHIFT			= 12
 var SQ_WAVE_MODE_EXCP_EN_ADDR_WATCH_SHIFT	= 19
@@ -92,6 +97,16 @@ var SQ_WAVE_IB_STS_RCNT_FIRST_REPLAY_MASK	= 0x003F8000
 
 var SQ_WAVE_MODE_DEBUG_EN_MASK			= 0x800
 
+#if ASIC_FAMILY < CHIP_PLUM_BONITO
+var S_TRAPSTS_NON_MASKABLE_EXCP_MASK		= SQ_WAVE_TRAPSTS_MEM_VIOL_MASK|SQ_WAVE_TRAPSTS_ILLEGAL_INST_MASK
+#else
+var S_TRAPSTS_NON_MASKABLE_EXCP_MASK		= SQ_WAVE_TRAPSTS_MEM_VIOL_MASK		|\
+						  SQ_WAVE_TRAPSTS_ILLEGAL_INST_MASK	|\
+						  SQ_WAVE_TRAPSTS_WAVE_START_MASK	|\
+						  SQ_WAVE_TRAPSTS_WAVE_END_MASK		|\
+						  SQ_WAVE_TRAPSTS_TRAP_AFTER_INST_MASK
+#endif
+
 // bits [31:24] unused by SPI debug data
 var TTMP11_SAVE_REPLAY_W64H_SHIFT		= 31
 var TTMP11_SAVE_REPLAY_W64H_MASK		= 0x80000000
@@ -224,7 +239,7 @@ L_NOT_HALTED:
 	// Check non-maskable exceptions. memory_violation, illegal_instruction
 	// and xnack_error exceptions always cause the wave to enter the trap
 	// handler.
-	s_and_b32	ttmp2, s_save_trapsts, SQ_WAVE_TRAPSTS_MEM_VIOL_MASK|SQ_WAVE_TRAPSTS_ILLEGAL_INST_MASK
+	s_and_b32	ttmp2, s_save_trapsts, S_TRAPSTS_NON_MASKABLE_EXCP_MASK
 	s_cbranch_scc1	L_FETCH_2ND_TRAP
 
 	// Check for maskable exceptions in trapsts.excp and trapsts.excp_hi.