drm/amdkfd: Add aldebaran trap handler support

Similar to arcturus, but ARCH/ACC VGPRs may now be split unevenly.
A new field in SQ_WAVE_GPR_ALLOC tracks the boundary between the two
sets of VGPRs.

Squash below patches:

drm/amdkfd: Use preprocessor for IP-specific trap handler code
drm/amdkfd: Fix VGPR restore race in gfx8/gfx9 trap handler
drm/amdkfd: Remove duplicated code in gfx9 trap handler
drm/amdkfd: Separate ARCH/ACC VGPR restore in trap handler
drm/amdkfd: Reverse order of ARCH/ACC VGPR restore in trap handler
Signed-off-by: Jay Cornwall <jay.cornwall@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdkfd/cwsr_trap_handler_gfx8.asm

@@ -563,6 +563,7 @@ L_RESTORE:
         buffer_load_dword v1, v0, s_restore_buf_rsrc0, s_restore_mem_offset_save    slc:1 glc:1 offset:256
         buffer_load_dword v2, v0, s_restore_buf_rsrc0, s_restore_mem_offset_save    slc:1 glc:1 offset:256*2
         buffer_load_dword v3, v0, s_restore_buf_rsrc0, s_restore_mem_offset_save    slc:1 glc:1 offset:256*3
+        s_waitcnt vmcnt(0)
 
     /*          restore SGPRs       */
     //////////////////////////////

drivers/gpu/drm/amd/amdkfd/kfd_device.c

@@ -656,11 +656,14 @@ static void kfd_cwsr_init(struct kfd_dev *kfd)
 			BUILD_BUG_ON(sizeof(cwsr_trap_gfx8_hex) > PAGE_SIZE);
 			kfd->cwsr_isa = cwsr_trap_gfx8_hex;
 			kfd->cwsr_isa_size = sizeof(cwsr_trap_gfx8_hex);
-		} else if (kfd->device_info->asic_family == CHIP_ARCTURUS
-			|| kfd->device_info->asic_family == CHIP_ALDEBARAN) {
+		} else if (kfd->device_info->asic_family == CHIP_ARCTURUS) {
 			BUILD_BUG_ON(sizeof(cwsr_trap_arcturus_hex) > PAGE_SIZE);
 			kfd->cwsr_isa = cwsr_trap_arcturus_hex;
 			kfd->cwsr_isa_size = sizeof(cwsr_trap_arcturus_hex);
+		} else if (kfd->device_info->asic_family == CHIP_ALDEBARAN) {
+			BUILD_BUG_ON(sizeof(cwsr_trap_aldebaran_hex) > PAGE_SIZE);
+			kfd->cwsr_isa = cwsr_trap_aldebaran_hex;
+			kfd->cwsr_isa_size = sizeof(cwsr_trap_aldebaran_hex);
 		} else if (kfd->device_info->asic_family < CHIP_NAVI10) {
 			BUILD_BUG_ON(sizeof(cwsr_trap_gfx9_hex) > PAGE_SIZE);
 			kfd->cwsr_isa = cwsr_trap_gfx9_hex;