drm/amd/display: Add VM page fault handle implementation

[How] Allocate memory for default page and program memory block addr
into default page addr register.
Signed-off-by: Jaehyun Chung <jaehyun.chung@amd.com>
Reviewed-by: Jun Lei <Jun.Lei@amd.com>
Acked-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/dc/dc.h

@@ -423,6 +423,7 @@ struct dc_phy_addr_space_config {
 	} gart_config;
 
 	bool valid;
+	uint64_t page_table_default_page_addr;
 };
 
 struct dc_virtual_addr_space_config {

drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hubbub.h

@@ -119,6 +119,8 @@ struct dcn_hubbub_registers {
 	uint32_t DCN_VM_AGP_BOT;
 	uint32_t DCN_VM_AGP_TOP;
 	uint32_t DCN_VM_AGP_BASE;
+	uint32_t DCN_VM_PROTECTION_FAULT_DEFAULT_ADDR_MSB;
+	uint32_t DCN_VM_PROTECTION_FAULT_DEFAULT_ADDR_LSB;
 };
 
 /* set field name */
@@ -196,7 +198,9 @@ struct dcn_hubbub_registers {
 		type DCHUBBUB_ARB_ALLOW_DRAM_CLK_CHANGE_WATERMARK_A;\
 		type DCHUBBUB_ARB_ALLOW_DRAM_CLK_CHANGE_WATERMARK_B;\
 		type DCHUBBUB_ARB_ALLOW_DRAM_CLK_CHANGE_WATERMARK_C;\
-		type DCHUBBUB_ARB_ALLOW_DRAM_CLK_CHANGE_WATERMARK_D
+		type DCHUBBUB_ARB_ALLOW_DRAM_CLK_CHANGE_WATERMARK_D;\
+		type DCN_VM_PROTECTION_FAULT_DEFAULT_ADDR_MSB;\
+		type DCN_VM_PROTECTION_FAULT_DEFAULT_ADDR_LSB
 
 #define HUBBUB_STUTTER_REG_FIELD_LIST(type) \
 		type DCHUBBUB_ARB_ALLOW_SR_ENTER_WATERMARK_A;\

drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hubbub.c

@@ -380,6 +380,11 @@ int hubbub2_init_dchub_sys_ctx(struct hubbub *hubbub,
 	REG_SET(DCN_VM_AGP_BASE, 0,
 			AGP_BASE, pa_config->system_aperture.agp_base >> 24);
 
+	REG_SET(DCN_VM_PROTECTION_FAULT_DEFAULT_ADDR_MSB, 0,
+			DCN_VM_PROTECTION_FAULT_DEFAULT_ADDR_MSB, (pa_config->page_table_default_page_addr >> 44) & 0xF);
+	REG_SET(DCN_VM_PROTECTION_FAULT_DEFAULT_ADDR_LSB, 0,
+			DCN_VM_PROTECTION_FAULT_DEFAULT_ADDR_LSB, (pa_config->page_table_default_page_addr >> 12) & 0xFFFFFFFF);
+
 	if (pa_config->gart_config.page_table_start_addr != pa_config->gart_config.page_table_end_addr) {
 		phys_config.page_table_start_addr = pa_config->gart_config.page_table_start_addr >> 12;
 		phys_config.page_table_end_addr = pa_config->gart_config.page_table_end_addr >> 12;

drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hubbub.h

@@ -45,7 +45,10 @@
 #define HUBBUB_REG_LIST_DCN20(id)\
 	HUBBUB_REG_LIST_DCN20_COMMON(), \
 	HUBBUB_SR_WATERMARK_REG_LIST(), \
-	HUBBUB_VM_REG_LIST()
+	HUBBUB_VM_REG_LIST(),\
+	SR(DCN_VM_PROTECTION_FAULT_DEFAULT_ADDR_MSB),\
+	SR(DCN_VM_PROTECTION_FAULT_DEFAULT_ADDR_LSB)
+
 
 #define HUBBUB_MASK_SH_LIST_DCN20(mask_sh)\
 	HUBBUB_MASK_SH_LIST_DCN_COMMON(mask_sh), \
@@ -56,7 +59,9 @@
 	HUBBUB_SF(DCN_VM_FB_OFFSET, FB_OFFSET, mask_sh), \
 	HUBBUB_SF(DCN_VM_AGP_BOT, AGP_BOT, mask_sh), \
 	HUBBUB_SF(DCN_VM_AGP_TOP, AGP_TOP, mask_sh), \
-	HUBBUB_SF(DCN_VM_AGP_BASE, AGP_BASE, mask_sh)
+	HUBBUB_SF(DCN_VM_AGP_BASE, AGP_BASE, mask_sh), \
+	HUBBUB_SF(DCN_VM_PROTECTION_FAULT_DEFAULT_ADDR_MSB, DCN_VM_PROTECTION_FAULT_DEFAULT_ADDR_MSB, mask_sh), \
+	HUBBUB_SF(DCN_VM_PROTECTION_FAULT_DEFAULT_ADDR_LSB, DCN_VM_PROTECTION_FAULT_DEFAULT_ADDR_LSB, mask_sh)
 
 struct dcn20_hubbub {
 	struct hubbub base;

drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c

@@ -1504,6 +1504,7 @@ static int dcn20_init_sys_ctx(struct dce_hwseq *hws, struct dc *dc, struct dc_ph
 	config.gart_config.page_table_start_addr = pa_config->gart_config.page_table_start_addr;
 	config.gart_config.page_table_end_addr = pa_config->gart_config.page_table_end_addr;
 	config.gart_config.page_table_base_addr = pa_config->gart_config.page_table_base_addr;
+	config.page_table_default_page_addr = pa_config->page_table_default_page_addr;
 
 	return dc->res_pool->hubbub->funcs->init_dchub_sys_ctx(dc->res_pool->hubbub, &config);
 }

drivers/gpu/drm/amd/display/dc/inc/hw/dchubbub.h

@@ -80,6 +80,8 @@ struct dcn_hubbub_phys_addr_config {
 		uint64_t page_table_end_addr;
 		uint64_t page_table_base_addr;
 	} gart_config;
+
+	uint64_t page_table_default_page_addr;
 };
 
 struct dcn_hubbub_virt_addr_config {