On 2023-01-25 14:53, Jonathan Kim wrote:
Implement the per-device calls to enable or disable HW debug mode
for GFX11.
Signed-off-by: Jonathan Kim <jonathan.kim@xxxxxxx>
---
.../drm/amd/amdgpu/amdgpu_amdkfd_gfx_v11.c | 39 +++++++++++++++++++
1 file changed, 39 insertions(+)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v11.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v11.c
index 7e80caa05060..34aeff692eba 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v11.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v11.c
@@ -30,6 +30,7 @@
#include "soc15d.h"
#include "v11_structs.h"
#include "soc21.h"
+#include <uapi/linux/kfd_ioctl.h>
What is this needed for? Maybe for a later patch?
enum hqd_dequeue_request_type {
NO_ACTION = 0,
@@ -606,6 +607,42 @@ static void set_vm_context_page_table_base_v11(struct amdgpu_device *adev,
adev->gfxhub.funcs->setup_vm_pt_regs(adev, vmid, page_table_base);
}
+/**
Use /* here.
+ * Returns TRAP_EN, EXCP_EN and EXCP_REPLACE.
+ *
+ * restore_dbg_reisters is ignored here but is a general interface requirement
Typo: registers
With those fixed, the patch is
Reviewed-by: Felix Kuehling <Felix.Kuehling@xxxxxxx>
+ * for devices that support GFXOFF and where the RLC save/restore list
+ * does not support hw registers for debugging i.e. the driver has to manually
+ * initialize the debug mode registers after it has disabled GFX off during the
+ * debug session.
+ */
+static uint32_t kgd_gfx_v11_enable_debug_trap(struct amdgpu_device *adev,
+ bool restore_dbg_registers,
+ uint32_t vmid)
+{
+ uint32_t data = 0;
+
+ data = REG_SET_FIELD(data, SPI_GDBG_PER_VMID_CNTL, TRAP_EN, 1);
+ data = REG_SET_FIELD(data, SPI_GDBG_PER_VMID_CNTL, EXCP_EN, 0);
+ data = REG_SET_FIELD(data, SPI_GDBG_PER_VMID_CNTL, EXCP_REPLACE, 0);
+
+ return data;
+}
+
+/* Returns TRAP_EN, EXCP_EN and EXCP_REPLACE. */
+static uint32_t kgd_gfx_v11_disable_debug_trap(struct amdgpu_device *adev,
+ bool keep_trap_enabled,
+ uint32_t vmid)
+{
+ uint32_t data = 0;
+
+ data = REG_SET_FIELD(data, SPI_GDBG_PER_VMID_CNTL, TRAP_EN, keep_trap_enabled);
+ data = REG_SET_FIELD(data, SPI_GDBG_PER_VMID_CNTL, EXCP_EN, 0);
+ data = REG_SET_FIELD(data, SPI_GDBG_PER_VMID_CNTL, EXCP_REPLACE, 0);
+
+ return data;
+}
+
const struct kfd2kgd_calls gfx_v11_kfd2kgd = {
.program_sh_mem_settings = program_sh_mem_settings_v11,
.set_pasid_vmid_mapping = set_pasid_vmid_mapping_v11,
@@ -622,4 +659,6 @@ const struct kfd2kgd_calls gfx_v11_kfd2kgd = {
.wave_control_execute = wave_control_execute_v11,
.get_atc_vmid_pasid_mapping_info = NULL,
.set_vm_context_page_table_base = set_vm_context_page_table_base_v11,
+ .enable_debug_trap = kgd_gfx_v11_enable_debug_trap,
+ .disable_debug_trap = kgd_gfx_v11_disable_debug_trap
};
