// SPDX-License-Identifier: GPL-2.0-only /* * Copyright 2021 Microsoft * * Portions of this code is derived from hyperv_fb.c */ #include <linux/hyperv.h> #include <drm/drm_print.h> #include <drm/drm_simple_kms_helper.h> #include "hyperv_drm.h" #define VMBUS_RING_BUFSIZE … #define VMBUS_VSP_TIMEOUT … #define SYNTHVID_VERSION(major, minor) … #define SYNTHVID_VER_GET_MAJOR(ver) … #define SYNTHVID_VER_GET_MINOR(ver) … /* Support for VERSION_WIN7 is removed. #define is retained for reference. */ #define SYNTHVID_VERSION_WIN7 … #define SYNTHVID_VERSION_WIN8 … #define SYNTHVID_VERSION_WIN10 … #define SYNTHVID_DEPTH_WIN8 … #define SYNTHVID_WIDTH_WIN8 … #define SYNTHVID_HEIGHT_WIN8 … #define SYNTHVID_FB_SIZE_WIN8 … enum pipe_msg_type { … }; enum synthvid_msg_type { … }; struct pipe_msg_hdr { … } __packed; struct hvd_screen_info { … } __packed; struct synthvid_msg_hdr { … } __packed; struct synthvid_version_req { … } __packed; struct synthvid_version_resp { … } __packed; struct synthvid_vram_location { … } __packed; struct synthvid_vram_location_ack { … } __packed; struct video_output_situation { … } __packed; struct synthvid_situation_update { … } __packed; struct synthvid_situation_update_ack { … } __packed; struct synthvid_pointer_position { … } __packed; #define SYNTHVID_CURSOR_MAX_X … #define SYNTHVID_CURSOR_MAX_Y … #define SYNTHVID_CURSOR_ARGB_PIXEL_SIZE … #define SYNTHVID_CURSOR_MAX_SIZE … #define SYNTHVID_CURSOR_COMPLETE … struct synthvid_pointer_shape { … } __packed; struct synthvid_feature_change { … } __packed; struct rect { … } __packed; struct synthvid_dirt { … } __packed; #define SYNTHVID_EDID_BLOCK_SIZE … #define SYNTHVID_MAX_RESOLUTION_COUNT … struct synthvid_supported_resolution_req { … } __packed; struct synthvid_supported_resolution_resp { … } __packed; struct synthvid_msg { … } __packed; static inline bool hyperv_version_ge(u32 ver1, u32 ver2) { … } static inline int hyperv_sendpacket(struct hv_device *hdev, struct synthvid_msg *msg) { … } static int hyperv_negotiate_version(struct hv_device *hdev, u32 ver) { … } int hyperv_update_vram_location(struct hv_device *hdev, phys_addr_t vram_pp) { … } int hyperv_update_situation(struct hv_device *hdev, u8 active, u32 bpp, u32 w, u32 h, u32 pitch) { … } /* * Hyper-V supports a hardware cursor feature. It's not used by Linux VM, * but the Hyper-V host still draws a point as an extra mouse pointer, * which is unwanted, especially when Xorg is running. * * The hyperv_fb driver uses synthvid_send_ptr() to hide the unwanted * pointer, by setting msg.ptr_pos.is_visible = 1 and setting the * msg.ptr_shape.data. Note: setting msg.ptr_pos.is_visible to 0 doesn't * work in tests. * * Copy synthvid_send_ptr() to hyperv_drm and rename it to * hyperv_hide_hw_ptr(). Note: hyperv_hide_hw_ptr() is also called in the * handler of the SYNTHVID_FEATURE_CHANGE event, otherwise the host still * draws an extra unwanted mouse pointer after the VM Connection window is * closed and reopened. */ int hyperv_hide_hw_ptr(struct hv_device *hdev) { … } int hyperv_update_dirt(struct hv_device *hdev, struct drm_rect *rect) { … } static int hyperv_get_supported_resolution(struct hv_device *hdev) { … } static void hyperv_receive_sub(struct hv_device *hdev) { … } static void hyperv_receive(void *ctx) { … } int hyperv_connect_vsp(struct hv_device *hdev) { … }
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