From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001 From: Iouri Tarassov Date: Wed, 19 Jan 2022 16:53:47 -0800 Subject: drivers: hv: dxgkrnl: Query the dxgdevice state Implement the ioctl to query the dxgdevice state - LX_DXGETDEVICESTATE. The IOCTL is used to query the state of the given dxgdevice object (active, error, etc.). A call to the dxgdevice execution state could be high frequency. The following method is used to avoid sending a synchronous VM bus message to the host for every call: - When a dxgdevice is created, a pointer to dxgglobal->device_state_counter is sent to the host - Every time the device state on the host is changed, the host will send an asynchronous message to the guest (DXGK_VMBCOMMAND_SETGUESTDATA) and the guest will increment the device_state_counter value. - the dxgdevice object has execution_state_counter member, which is equal to dxgglobal->device_state_counter value at the time when LX_DXGETDEVICESTATE was last processed.. - if execution_state_counter is different from device_state_counter, the dxgk_vmbcommand_getdevicestate VM bus message is sent to the host. Otherwise, the cached value is returned to the caller. Signed-off-by: Iouri Tarassov [kms: Forward port to v6.1] Signed-off-by: Kelsey Steele --- drivers/hv/dxgkrnl/dxgkrnl.h | 11 + drivers/hv/dxgkrnl/dxgmodule.c | 1 - drivers/hv/dxgkrnl/dxgvmbus.c | 68 +++++++ drivers/hv/dxgkrnl/dxgvmbus.h | 26 +++ drivers/hv/dxgkrnl/ioctl.c | 66 +++++- include/uapi/misc/d3dkmthk.h | 101 +++++++++- 6 files changed, 261 insertions(+), 12 deletions(-) diff --git a/drivers/hv/dxgkrnl/dxgkrnl.h b/drivers/hv/dxgkrnl/dxgkrnl.h index a39d11d76e41..b131c3b43838 100644 --- a/drivers/hv/dxgkrnl/dxgkrnl.h +++ b/drivers/hv/dxgkrnl/dxgkrnl.h @@ -268,12 +268,18 @@ void dxgsyncobject_destroy(struct dxgprocess *process, void dxgsyncobject_stop(struct dxgsyncobject *syncobj); void dxgsyncobject_release(struct kref *refcount); +/* + * device_state_counter - incremented every time the execition state of + * a DXGDEVICE is changed in the host. Used to optimize access to the + * device execution state. + */ struct dxgglobal { struct dxgdriver *drvdata; struct dxgvmbuschannel channel; struct hv_device *hdev; u32 num_adapters; u32 vmbus_ver; /* Interface version */ + atomic_t device_state_counter; struct resource *mem; u64 mmiospace_base; u64 mmiospace_size; @@ -512,6 +518,7 @@ struct dxgdevice { struct list_head syncobj_list_head; struct d3dkmthandle handle; enum d3dkmt_deviceexecution_state execution_state; + int execution_state_counter; u32 handle_valid; }; @@ -849,6 +856,10 @@ int dxgvmb_send_open_sync_object_nt(struct dxgprocess *process, struct d3dkmt_opensyncobjectfromnthandle2 *args, struct dxgsyncobject *syncobj); +int dxgvmb_send_get_device_state(struct dxgprocess *process, + struct dxgadapter *adapter, + struct d3dkmt_getdevicestate *args, + struct d3dkmt_getdevicestate *__user inargs); int dxgvmb_send_create_nt_shared_object(struct dxgprocess *process, struct d3dkmthandle object, struct d3dkmthandle *shared_handle); diff --git a/drivers/hv/dxgkrnl/dxgmodule.c b/drivers/hv/dxgkrnl/dxgmodule.c index 8cbe1095599f..5c364a46b65f 100644 --- a/drivers/hv/dxgkrnl/dxgmodule.c +++ b/drivers/hv/dxgkrnl/dxgmodule.c @@ -827,7 +827,6 @@ static struct dxgglobal *dxgglobal_create(void) #ifdef DEBUG dxgk_validate_ioctls(); #endif - return dxgglobal; } diff --git a/drivers/hv/dxgkrnl/dxgvmbus.c b/drivers/hv/dxgkrnl/dxgvmbus.c index 67a16de622e0..ed800dc09180 100644 --- a/drivers/hv/dxgkrnl/dxgvmbus.c +++ b/drivers/hv/dxgkrnl/dxgvmbus.c @@ -281,6 +281,24 @@ static void command_vm_to_host_init1(struct dxgkvmb_command_vm_to_host *command, command->channel_type = DXGKVMB_VM_TO_HOST; } +static void set_guest_data(struct dxgkvmb_command_host_to_vm *packet, + u32 packet_length) +{ + struct dxgkvmb_command_setguestdata *command = (void *)packet; + struct dxgglobal *dxgglobal = dxggbl(); + + DXG_TRACE("Setting guest data: %d %d %p %p", + command->data_type, + command->data32, + command->guest_pointer, + &dxgglobal->device_state_counter); + if (command->data_type == SETGUESTDATA_DATATYPE_DWORD && + command->guest_pointer == &dxgglobal->device_state_counter && + command->data32 != 0) { + atomic_inc(&dxgglobal->device_state_counter); + } +} + static void signal_guest_event(struct dxgkvmb_command_host_to_vm *packet, u32 packet_length) { @@ -311,6 +329,9 @@ static void process_inband_packet(struct dxgvmbuschannel *channel, DXG_TRACE("global packet %d", packet->command_type); switch (packet->command_type) { + case DXGK_VMBCOMMAND_SETGUESTDATA: + set_guest_data(packet, packet_length); + break; case DXGK_VMBCOMMAND_SIGNALGUESTEVENT: case DXGK_VMBCOMMAND_SIGNALGUESTEVENTPASSIVE: signal_guest_event(packet, packet_length); @@ -1028,6 +1049,7 @@ struct d3dkmthandle dxgvmb_send_create_device(struct dxgadapter *adapter, struct dxgkvmb_command_createdevice *command; struct dxgkvmb_command_createdevice_return result = { }; struct dxgvmbusmsg msg; + struct dxgglobal *dxgglobal = dxggbl(); ret = init_message(&msg, adapter, process, sizeof(*command)); if (ret) @@ -1037,6 +1059,7 @@ struct d3dkmthandle dxgvmb_send_create_device(struct dxgadapter *adapter, command_vgpu_to_host_init2(&command->hdr, DXGK_VMBCOMMAND_CREATEDEVICE, process->host_handle); command->flags = args->flags; + command->error_code = &dxgglobal->device_state_counter; ret = dxgvmb_send_sync_msg(msg.channel, msg.hdr, msg.size, &result, sizeof(result)); @@ -1806,6 +1829,51 @@ int dxgvmb_send_destroy_allocation(struct dxgprocess *process, return ret; } +int dxgvmb_send_get_device_state(struct dxgprocess *process, + struct dxgadapter *adapter, + struct d3dkmt_getdevicestate *args, + struct d3dkmt_getdevicestate *__user output) +{ + int ret; + struct dxgkvmb_command_getdevicestate *command; + struct dxgkvmb_command_getdevicestate_return result = { }; + struct dxgvmbusmsg msg = {.hdr = NULL}; + + ret = init_message(&msg, adapter, process, sizeof(*command)); + if (ret) + goto cleanup; + command = (void *)msg.msg; + + command_vgpu_to_host_init2(&command->hdr, + DXGK_VMBCOMMAND_GETDEVICESTATE, + process->host_handle); + command->args = *args; + + ret = dxgvmb_send_sync_msg(msg.channel, msg.hdr, msg.size, + &result, sizeof(result)); + if (ret < 0) + goto cleanup; + + ret = ntstatus2int(result.status); + if (ret < 0) + goto cleanup; + + ret = copy_to_user(output, &result.args, sizeof(result.args)); + if (ret) { + DXG_ERR("failed to copy output args"); + ret = -EINVAL; + } + + if (args->state_type == _D3DKMT_DEVICESTATE_EXECUTION) + args->execution_state = result.args.execution_state; + +cleanup: + free_message(&msg, process); + if (ret) + DXG_TRACE("err: %d", ret); + return ret; +} + int dxgvmb_send_open_resource(struct dxgprocess *process, struct dxgadapter *adapter, struct d3dkmthandle device, diff --git a/drivers/hv/dxgkrnl/dxgvmbus.h b/drivers/hv/dxgkrnl/dxgvmbus.h index c1f693917d99..6ca1068b0d4c 100644 --- a/drivers/hv/dxgkrnl/dxgvmbus.h +++ b/drivers/hv/dxgkrnl/dxgvmbus.h @@ -172,6 +172,22 @@ struct dxgkvmb_command_signalguestevent { bool dereference_event; }; +enum set_guestdata_type { + SETGUESTDATA_DATATYPE_DWORD = 0, + SETGUESTDATA_DATATYPE_UINT64 = 1 +}; + +struct dxgkvmb_command_setguestdata { + struct dxgkvmb_command_host_to_vm hdr; + void *guest_pointer; + union { + u64 data64; + u32 data32; + }; + u32 dereference : 1; + u32 data_type : 4; +}; + struct dxgkvmb_command_opensyncobject { struct dxgkvmb_command_vm_to_host hdr; struct d3dkmthandle device; @@ -574,6 +590,16 @@ struct dxgkvmb_command_destroyhwqueue { struct d3dkmthandle hwqueue; }; +struct dxgkvmb_command_getdevicestate { + struct dxgkvmb_command_vgpu_to_host hdr; + struct d3dkmt_getdevicestate args; +}; + +struct dxgkvmb_command_getdevicestate_return { + struct d3dkmt_getdevicestate args; + struct ntstatus status; +}; + struct dxgkvmb_command_shareobjectwithhost { struct dxgkvmb_command_vm_to_host hdr; struct d3dkmthandle device_handle; diff --git a/drivers/hv/dxgkrnl/ioctl.c b/drivers/hv/dxgkrnl/ioctl.c index ac052836ce27..26d410fd6e99 100644 --- a/drivers/hv/dxgkrnl/ioctl.c +++ b/drivers/hv/dxgkrnl/ioctl.c @@ -3142,6 +3142,70 @@ dxgkio_wait_sync_object_gpu(struct dxgprocess *process, void *__user inargs) return ret; } +static int +dxgkio_get_device_state(struct dxgprocess *process, void *__user inargs) +{ + int ret; + struct d3dkmt_getdevicestate args; + struct dxgdevice *device = NULL; + struct dxgadapter *adapter = NULL; + int global_device_state_counter = 0; + struct dxgglobal *dxgglobal = dxggbl(); + + ret = copy_from_user(&args, inargs, sizeof(args)); + if (ret) { + DXG_ERR("failed to copy input args"); + ret = -EINVAL; + goto cleanup; + } + + device = dxgprocess_device_by_handle(process, args.device); + if (device == NULL) { + ret = -EINVAL; + goto cleanup; + } + + adapter = device->adapter; + ret = dxgadapter_acquire_lock_shared(adapter); + if (ret < 0) { + adapter = NULL; + goto cleanup; + } + + if (args.state_type == _D3DKMT_DEVICESTATE_EXECUTION) { + global_device_state_counter = + atomic_read(&dxgglobal->device_state_counter); + if (device->execution_state_counter == + global_device_state_counter) { + args.execution_state = device->execution_state; + ret = copy_to_user(inargs, &args, sizeof(args)); + if (ret) { + DXG_ERR("failed to copy args to user"); + ret = -EINVAL; + } + goto cleanup; + } + } + + ret = dxgvmb_send_get_device_state(process, adapter, &args, inargs); + + if (ret == 0 && args.state_type == _D3DKMT_DEVICESTATE_EXECUTION) { + device->execution_state = args.execution_state; + device->execution_state_counter = global_device_state_counter; + } + +cleanup: + + if (adapter) + dxgadapter_release_lock_shared(adapter); + if (device) + kref_put(&device->device_kref, dxgdevice_release); + if (ret < 0) + DXG_ERR("Failed to get device state %x", ret); + + return ret; +} + static int dxgsharedsyncobj_get_host_nt_handle(struct dxgsharedsyncobject *syncobj, struct dxgprocess *process, @@ -3822,7 +3886,7 @@ static struct ioctl_desc ioctls[] = { /* 0x0b */ {}, /* 0x0c */ {}, /* 0x0d */ {}, -/* 0x0e */ {}, +/* 0x0e */ {dxgkio_get_device_state, LX_DXGETDEVICESTATE}, /* 0x0f */ {dxgkio_submit_command, LX_DXSUBMITCOMMAND}, /* 0x10 */ {dxgkio_create_sync_object, LX_DXCREATESYNCHRONIZATIONOBJECT}, /* 0x11 */ {dxgkio_signal_sync_object, LX_DXSIGNALSYNCHRONIZATIONOBJECT}, diff --git a/include/uapi/misc/d3dkmthk.h b/include/uapi/misc/d3dkmthk.h index 895861505e6e..8a013b07e88a 100644 --- a/include/uapi/misc/d3dkmthk.h +++ b/include/uapi/misc/d3dkmthk.h @@ -236,6 +236,95 @@ struct d3dddi_destroypagingqueue { struct d3dkmthandle paging_queue; }; +enum dxgk_render_pipeline_stage { + _DXGK_RENDER_PIPELINE_STAGE_UNKNOWN = 0, + _DXGK_RENDER_PIPELINE_STAGE_INPUT_ASSEMBLER = 1, + _DXGK_RENDER_PIPELINE_STAGE_VERTEX_SHADER = 2, + _DXGK_RENDER_PIPELINE_STAGE_GEOMETRY_SHADER = 3, + _DXGK_RENDER_PIPELINE_STAGE_STREAM_OUTPUT = 4, + _DXGK_RENDER_PIPELINE_STAGE_RASTERIZER = 5, + _DXGK_RENDER_PIPELINE_STAGE_PIXEL_SHADER = 6, + _DXGK_RENDER_PIPELINE_STAGE_OUTPUT_MERGER = 7, +}; + +enum dxgk_page_fault_flags { + _DXGK_PAGE_FAULT_WRITE = 0x1, + _DXGK_PAGE_FAULT_FENCE_INVALID = 0x2, + _DXGK_PAGE_FAULT_ADAPTER_RESET_REQUIRED = 0x4, + _DXGK_PAGE_FAULT_ENGINE_RESET_REQUIRED = 0x8, + _DXGK_PAGE_FAULT_FATAL_HARDWARE_ERROR = 0x10, + _DXGK_PAGE_FAULT_IOMMU = 0x20, + _DXGK_PAGE_FAULT_HW_CONTEXT_VALID = 0x40, + _DXGK_PAGE_FAULT_PROCESS_HANDLE_VALID = 0x80, +}; + +enum dxgk_general_error_code { + _DXGK_GENERAL_ERROR_PAGE_FAULT = 0, + _DXGK_GENERAL_ERROR_INVALID_INSTRUCTION = 1, +}; + +struct dxgk_fault_error_code { + union { + struct { + __u32 is_device_specific_code:1; + enum dxgk_general_error_code general_error_code:31; + }; + struct { + __u32 is_device_specific_code_reserved_bit:1; + __u32 device_specific_code:31; + }; + }; +}; + +struct d3dkmt_devicereset_state { + union { + struct { + __u32 desktop_switched:1; + __u32 reserved:31; + }; + __u32 value; + }; +}; + +struct d3dkmt_devicepagefault_state { + __u64 faulted_primitive_api_sequence_number; + enum dxgk_render_pipeline_stage faulted_pipeline_stage; + __u32 faulted_bind_table_entry; + enum dxgk_page_fault_flags page_fault_flags; + struct dxgk_fault_error_code fault_error_code; + __u64 faulted_virtual_address; +}; + +enum d3dkmt_deviceexecution_state { + _D3DKMT_DEVICEEXECUTION_ACTIVE = 1, + _D3DKMT_DEVICEEXECUTION_RESET = 2, + _D3DKMT_DEVICEEXECUTION_HUNG = 3, + _D3DKMT_DEVICEEXECUTION_STOPPED = 4, + _D3DKMT_DEVICEEXECUTION_ERROR_OUTOFMEMORY = 5, + _D3DKMT_DEVICEEXECUTION_ERROR_DMAFAULT = 6, + _D3DKMT_DEVICEEXECUTION_ERROR_DMAPAGEFAULT = 7, +}; + +enum d3dkmt_devicestate_type { + _D3DKMT_DEVICESTATE_EXECUTION = 1, + _D3DKMT_DEVICESTATE_PRESENT = 2, + _D3DKMT_DEVICESTATE_RESET = 3, + _D3DKMT_DEVICESTATE_PRESENT_DWM = 4, + _D3DKMT_DEVICESTATE_PAGE_FAULT = 5, + _D3DKMT_DEVICESTATE_PRESENT_QUEUE = 6, +}; + +struct d3dkmt_getdevicestate { + struct d3dkmthandle device; + enum d3dkmt_devicestate_type state_type; + union { + enum d3dkmt_deviceexecution_state execution_state; + struct d3dkmt_devicereset_state reset_state; + struct d3dkmt_devicepagefault_state page_fault_state; + char alignment[48]; + }; +}; + enum d3dkmdt_gdisurfacetype { _D3DKMDT_GDISURFACE_INVALID = 0, _D3DKMDT_GDISURFACE_TEXTURE = 1, @@ -759,16 +848,6 @@ struct d3dkmt_queryadapterinfo { __u32 private_data_size; }; -enum d3dkmt_deviceexecution_state { - _D3DKMT_DEVICEEXECUTION_ACTIVE = 1, - _D3DKMT_DEVICEEXECUTION_RESET = 2, - _D3DKMT_DEVICEEXECUTION_HUNG = 3, - _D3DKMT_DEVICEEXECUTION_STOPPED = 4, - _D3DKMT_DEVICEEXECUTION_ERROR_OUTOFMEMORY = 5, - _D3DKMT_DEVICEEXECUTION_ERROR_DMAFAULT = 6, - _D3DKMT_DEVICEEXECUTION_ERROR_DMAPAGEFAULT = 7, -}; - struct d3dddi_openallocationinfo2 { struct d3dkmthandle allocation; #ifdef __KERNEL__ @@ -978,6 +1057,8 @@ struct d3dkmt_shareobjectwithhost { _IOWR(0x47, 0x07, struct d3dkmt_createpagingqueue) #define LX_DXQUERYADAPTERINFO \ _IOWR(0x47, 0x09, struct d3dkmt_queryadapterinfo) +#define LX_DXGETDEVICESTATE \ + _IOWR(0x47, 0x0e, struct d3dkmt_getdevicestate) #define LX_DXSUBMITCOMMAND \ _IOWR(0x47, 0x0f, struct d3dkmt_submitcommand) #define LX_DXCREATESYNCHRONIZATIONOBJECT \ -- Armbian