^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * Copyright (c) 2012, Microsoft Corporation.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Author:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * Haiyang Zhang <haiyangz@microsoft.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) * Hyper-V Synthetic Video Frame Buffer Driver
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) * This is the driver for the Hyper-V Synthetic Video, which supports
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) * screen resolution up to Full HD 1920x1080 with 32 bit color on Windows
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) * Server 2012, and 1600x1200 with 16 bit color on Windows Server 2008 R2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) * or earlier.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) * It also solves the double mouse cursor issue of the emulated video mode.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) * The default screen resolution is 1152x864, which may be changed by a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) * kernel parameter:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) * video=hyperv_fb:<width>x<height>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) * For example: video=hyperv_fb:1280x1024
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) * Portrait orientation is also supported:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) * For example: video=hyperv_fb:864x1152
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) * When a Windows 10 RS5+ host is used, the virtual machine screen
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) * resolution is obtained from the host. The "video=hyperv_fb" option is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) * not needed, but still can be used to overwrite what the host specifies.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) * The VM resolution on the host could be set by executing the powershell
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) * "set-vmvideo" command. For example
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) * set-vmvideo -vmname name -horizontalresolution:1920 \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) * -verticalresolution:1200 -resolutiontype single
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) * Gen 1 VMs also support direct using VM's physical memory for framebuffer.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) * It could improve the efficiency and performance for framebuffer and VM.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) * This requires to allocate contiguous physical memory from Linux kernel's
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) * CMA memory allocator. To enable this, supply a kernel parameter to give
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) * enough memory space to CMA allocator for framebuffer. For example:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) * cma=130m
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) * This gives 130MB memory to CMA allocator that can be allocated to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) * framebuffer. For reference, 8K resolution (7680x4320) takes about
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) * 127MB memory.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) #include <linux/vmalloc.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) #include <linux/completion.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) #include <linux/fb.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) #include <linux/pci.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) #include <linux/efi.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) #include <linux/console.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) #include <linux/hyperv.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) /* Hyper-V Synthetic Video Protocol definitions and structures */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) #define MAX_VMBUS_PKT_SIZE 0x4000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) #define SYNTHVID_VERSION(major, minor) ((minor) << 16 | (major))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) #define SYNTHVID_VERSION_WIN7 SYNTHVID_VERSION(3, 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) #define SYNTHVID_VERSION_WIN8 SYNTHVID_VERSION(3, 2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) #define SYNTHVID_VERSION_WIN10 SYNTHVID_VERSION(3, 5)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) #define SYNTHVID_VER_GET_MAJOR(ver) (ver & 0x0000ffff)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) #define SYNTHVID_VER_GET_MINOR(ver) ((ver & 0xffff0000) >> 16)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) #define SYNTHVID_DEPTH_WIN7 16
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) #define SYNTHVID_DEPTH_WIN8 32
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) #define SYNTHVID_FB_SIZE_WIN7 (4 * 1024 * 1024)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) #define SYNTHVID_WIDTH_MAX_WIN7 1600
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) #define SYNTHVID_HEIGHT_MAX_WIN7 1200
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) #define SYNTHVID_FB_SIZE_WIN8 (8 * 1024 * 1024)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) #define PCI_VENDOR_ID_MICROSOFT 0x1414
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) #define PCI_DEVICE_ID_HYPERV_VIDEO 0x5353
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) enum pipe_msg_type {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) PIPE_MSG_INVALID,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) PIPE_MSG_DATA,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) PIPE_MSG_MAX
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) struct pipe_msg_hdr {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) u32 type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) u32 size; /* size of message after this field */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) } __packed;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) enum synthvid_msg_type {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) SYNTHVID_ERROR = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) SYNTHVID_VERSION_REQUEST = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) SYNTHVID_VERSION_RESPONSE = 2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) SYNTHVID_VRAM_LOCATION = 3,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) SYNTHVID_VRAM_LOCATION_ACK = 4,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) SYNTHVID_SITUATION_UPDATE = 5,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) SYNTHVID_SITUATION_UPDATE_ACK = 6,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) SYNTHVID_POINTER_POSITION = 7,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) SYNTHVID_POINTER_SHAPE = 8,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) SYNTHVID_FEATURE_CHANGE = 9,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) SYNTHVID_DIRT = 10,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) SYNTHVID_RESOLUTION_REQUEST = 13,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) SYNTHVID_RESOLUTION_RESPONSE = 14,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) SYNTHVID_MAX = 15
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) #define SYNTHVID_EDID_BLOCK_SIZE 128
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) #define SYNTHVID_MAX_RESOLUTION_COUNT 64
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) struct hvd_screen_info {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) u16 width;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) u16 height;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) } __packed;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) struct synthvid_msg_hdr {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) u32 type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) u32 size; /* size of this header + payload after this field*/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) } __packed;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) struct synthvid_version_req {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) u32 version;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) } __packed;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) struct synthvid_version_resp {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) u32 version;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) u8 is_accepted;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) u8 max_video_outputs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) } __packed;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) struct synthvid_supported_resolution_req {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) u8 maximum_resolution_count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) } __packed;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) struct synthvid_supported_resolution_resp {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) u8 edid_block[SYNTHVID_EDID_BLOCK_SIZE];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) u8 resolution_count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) u8 default_resolution_index;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) u8 is_standard;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) struct hvd_screen_info
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) supported_resolution[SYNTHVID_MAX_RESOLUTION_COUNT];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) } __packed;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) struct synthvid_vram_location {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) u64 user_ctx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) u8 is_vram_gpa_specified;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) u64 vram_gpa;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) } __packed;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) struct synthvid_vram_location_ack {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) u64 user_ctx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) } __packed;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) struct video_output_situation {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) u8 active;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) u32 vram_offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) u8 depth_bits;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) u32 width_pixels;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) u32 height_pixels;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) u32 pitch_bytes;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) } __packed;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) struct synthvid_situation_update {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) u64 user_ctx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) u8 video_output_count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) struct video_output_situation video_output[1];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) } __packed;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) struct synthvid_situation_update_ack {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) u64 user_ctx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) } __packed;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) struct synthvid_pointer_position {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) u8 is_visible;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) u8 video_output;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) s32 image_x;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) s32 image_y;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) } __packed;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) #define CURSOR_MAX_X 96
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) #define CURSOR_MAX_Y 96
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) #define CURSOR_ARGB_PIXEL_SIZE 4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) #define CURSOR_MAX_SIZE (CURSOR_MAX_X * CURSOR_MAX_Y * CURSOR_ARGB_PIXEL_SIZE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) #define CURSOR_COMPLETE (-1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) struct synthvid_pointer_shape {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) u8 part_idx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) u8 is_argb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) u32 width; /* CURSOR_MAX_X at most */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) u32 height; /* CURSOR_MAX_Y at most */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) u32 hot_x; /* hotspot relative to upper-left of pointer image */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) u32 hot_y;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) u8 data[4];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) } __packed;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) struct synthvid_feature_change {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) u8 is_dirt_needed;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) u8 is_ptr_pos_needed;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) u8 is_ptr_shape_needed;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) u8 is_situ_needed;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) } __packed;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) struct rect {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) s32 x1, y1; /* top left corner */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) s32 x2, y2; /* bottom right corner, exclusive */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) } __packed;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) struct synthvid_dirt {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) u8 video_output;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) u8 dirt_count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) struct rect rect[1];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) } __packed;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) struct synthvid_msg {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) struct pipe_msg_hdr pipe_hdr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) struct synthvid_msg_hdr vid_hdr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) union {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) struct synthvid_version_req ver_req;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) struct synthvid_version_resp ver_resp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) struct synthvid_vram_location vram;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) struct synthvid_vram_location_ack vram_ack;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) struct synthvid_situation_update situ;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) struct synthvid_situation_update_ack situ_ack;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) struct synthvid_pointer_position ptr_pos;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) struct synthvid_pointer_shape ptr_shape;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) struct synthvid_feature_change feature_chg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) struct synthvid_dirt dirt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) struct synthvid_supported_resolution_req resolution_req;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) struct synthvid_supported_resolution_resp resolution_resp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) } __packed;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) /* FB driver definitions and structures */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) #define HVFB_WIDTH 1152 /* default screen width */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) #define HVFB_HEIGHT 864 /* default screen height */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) #define HVFB_WIDTH_MIN 640
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) #define HVFB_HEIGHT_MIN 480
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) #define RING_BUFSIZE (256 * 1024)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) #define VSP_TIMEOUT (10 * HZ)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) #define HVFB_UPDATE_DELAY (HZ / 20)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) #define HVFB_ONDEMAND_THROTTLE (HZ / 20)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) struct hvfb_par {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) struct fb_info *info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) struct resource *mem;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) bool fb_ready; /* fb device is ready */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) struct completion wait;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) u32 synthvid_version;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) struct delayed_work dwork;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) bool update;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) bool update_saved; /* The value of 'update' before hibernation */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) u32 pseudo_palette[16];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) u8 init_buf[MAX_VMBUS_PKT_SIZE];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) u8 recv_buf[MAX_VMBUS_PKT_SIZE];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) /* If true, the VSC notifies the VSP on every framebuffer change */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) bool synchronous_fb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) /* If true, need to copy from deferred IO mem to framebuffer mem */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) bool need_docopy;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) struct notifier_block hvfb_panic_nb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) /* Memory for deferred IO and frame buffer itself */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) unsigned char *dio_vp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) unsigned char *mmio_vp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) phys_addr_t mmio_pp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) /* Dirty rectangle, protected by delayed_refresh_lock */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) int x1, y1, x2, y2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) bool delayed_refresh;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) spinlock_t delayed_refresh_lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) static uint screen_width = HVFB_WIDTH;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) static uint screen_height = HVFB_HEIGHT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) static uint screen_depth;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) static uint screen_fb_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) static uint dio_fb_size; /* FB size for deferred IO */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) /* Send message to Hyper-V host */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) static inline int synthvid_send(struct hv_device *hdev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) struct synthvid_msg *msg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) static atomic64_t request_id = ATOMIC64_INIT(0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) msg->pipe_hdr.type = PIPE_MSG_DATA;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) msg->pipe_hdr.size = msg->vid_hdr.size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) ret = vmbus_sendpacket(hdev->channel, msg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) msg->vid_hdr.size + sizeof(struct pipe_msg_hdr),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) atomic64_inc_return(&request_id),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) VM_PKT_DATA_INBAND, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) pr_err("Unable to send packet via vmbus\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) /* Send screen resolution info to host */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) static int synthvid_send_situ(struct hv_device *hdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) struct fb_info *info = hv_get_drvdata(hdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) struct synthvid_msg msg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) if (!info)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) memset(&msg, 0, sizeof(struct synthvid_msg));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) msg.vid_hdr.type = SYNTHVID_SITUATION_UPDATE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) msg.vid_hdr.size = sizeof(struct synthvid_msg_hdr) +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) sizeof(struct synthvid_situation_update);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) msg.situ.user_ctx = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) msg.situ.video_output_count = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) msg.situ.video_output[0].active = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) msg.situ.video_output[0].vram_offset = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) msg.situ.video_output[0].depth_bits = info->var.bits_per_pixel;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) msg.situ.video_output[0].width_pixels = info->var.xres;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) msg.situ.video_output[0].height_pixels = info->var.yres;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) msg.situ.video_output[0].pitch_bytes = info->fix.line_length;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) synthvid_send(hdev, &msg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) /* Send mouse pointer info to host */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) static int synthvid_send_ptr(struct hv_device *hdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) struct synthvid_msg msg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) memset(&msg, 0, sizeof(struct synthvid_msg));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) msg.vid_hdr.type = SYNTHVID_POINTER_POSITION;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) msg.vid_hdr.size = sizeof(struct synthvid_msg_hdr) +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) sizeof(struct synthvid_pointer_position);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) msg.ptr_pos.is_visible = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) msg.ptr_pos.video_output = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) msg.ptr_pos.image_x = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) msg.ptr_pos.image_y = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) synthvid_send(hdev, &msg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) memset(&msg, 0, sizeof(struct synthvid_msg));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) msg.vid_hdr.type = SYNTHVID_POINTER_SHAPE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) msg.vid_hdr.size = sizeof(struct synthvid_msg_hdr) +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) sizeof(struct synthvid_pointer_shape);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) msg.ptr_shape.part_idx = CURSOR_COMPLETE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) msg.ptr_shape.is_argb = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) msg.ptr_shape.width = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) msg.ptr_shape.height = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) msg.ptr_shape.hot_x = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) msg.ptr_shape.hot_y = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) msg.ptr_shape.data[0] = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) msg.ptr_shape.data[1] = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) msg.ptr_shape.data[2] = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) msg.ptr_shape.data[3] = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) synthvid_send(hdev, &msg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) /* Send updated screen area (dirty rectangle) location to host */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) synthvid_update(struct fb_info *info, int x1, int y1, int x2, int y2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) struct hv_device *hdev = device_to_hv_device(info->device);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) struct synthvid_msg msg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) memset(&msg, 0, sizeof(struct synthvid_msg));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) if (x2 == INT_MAX)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) x2 = info->var.xres;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) if (y2 == INT_MAX)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) y2 = info->var.yres;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) msg.vid_hdr.type = SYNTHVID_DIRT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) msg.vid_hdr.size = sizeof(struct synthvid_msg_hdr) +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) sizeof(struct synthvid_dirt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) msg.dirt.video_output = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) msg.dirt.dirt_count = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) msg.dirt.rect[0].x1 = (x1 > x2) ? 0 : x1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) msg.dirt.rect[0].y1 = (y1 > y2) ? 0 : y1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) msg.dirt.rect[0].x2 =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) (x2 < x1 || x2 > info->var.xres) ? info->var.xres : x2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) msg.dirt.rect[0].y2 =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) (y2 < y1 || y2 > info->var.yres) ? info->var.yres : y2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) synthvid_send(hdev, &msg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) static void hvfb_docopy(struct hvfb_par *par,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) unsigned long offset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) unsigned long size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) if (!par || !par->mmio_vp || !par->dio_vp || !par->fb_ready ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) size == 0 || offset >= dio_fb_size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) if (offset + size > dio_fb_size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) size = dio_fb_size - offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) memcpy(par->mmio_vp + offset, par->dio_vp + offset, size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) /* Deferred IO callback */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) static void synthvid_deferred_io(struct fb_info *p,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) struct list_head *pagelist)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) struct hvfb_par *par = p->par;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) struct page *page;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) unsigned long start, end;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) int y1, y2, miny, maxy;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) miny = INT_MAX;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) maxy = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) * Merge dirty pages. It is possible that last page cross
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) * over the end of frame buffer row yres. This is taken care of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) * in synthvid_update function by clamping the y2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) * value to yres.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) list_for_each_entry(page, pagelist, lru) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) start = page->index << PAGE_SHIFT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) end = start + PAGE_SIZE - 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) y1 = start / p->fix.line_length;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) y2 = end / p->fix.line_length;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) miny = min_t(int, miny, y1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) maxy = max_t(int, maxy, y2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) /* Copy from dio space to mmio address */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) if (par->fb_ready && par->need_docopy)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) hvfb_docopy(par, start, PAGE_SIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) if (par->fb_ready && par->update)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) synthvid_update(p, 0, miny, p->var.xres, maxy + 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) static struct fb_deferred_io synthvid_defio = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) .delay = HZ / 20,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) .deferred_io = synthvid_deferred_io,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) * Actions on received messages from host:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) * Complete the wait event.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) * Or, reply with screen and cursor info.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) static void synthvid_recv_sub(struct hv_device *hdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) struct fb_info *info = hv_get_drvdata(hdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) struct hvfb_par *par;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) struct synthvid_msg *msg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) if (!info)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) par = info->par;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) msg = (struct synthvid_msg *)par->recv_buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) /* Complete the wait event */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) if (msg->vid_hdr.type == SYNTHVID_VERSION_RESPONSE ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) msg->vid_hdr.type == SYNTHVID_RESOLUTION_RESPONSE ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) msg->vid_hdr.type == SYNTHVID_VRAM_LOCATION_ACK) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) memcpy(par->init_buf, msg, MAX_VMBUS_PKT_SIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) complete(&par->wait);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) /* Reply with screen and cursor info */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) if (msg->vid_hdr.type == SYNTHVID_FEATURE_CHANGE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) if (par->fb_ready) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) synthvid_send_ptr(hdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) synthvid_send_situ(hdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) par->update = msg->feature_chg.is_dirt_needed;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) if (par->update)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) schedule_delayed_work(&par->dwork, HVFB_UPDATE_DELAY);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) /* Receive callback for messages from the host */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) static void synthvid_receive(void *ctx)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503) struct hv_device *hdev = ctx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) struct fb_info *info = hv_get_drvdata(hdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505) struct hvfb_par *par;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) struct synthvid_msg *recv_buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) u32 bytes_recvd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) u64 req_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) if (!info)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514) par = info->par;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515) recv_buf = (struct synthvid_msg *)par->recv_buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) do {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) ret = vmbus_recvpacket(hdev->channel, recv_buf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519) MAX_VMBUS_PKT_SIZE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520) &bytes_recvd, &req_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521) if (bytes_recvd > 0 &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522) recv_buf->pipe_hdr.type == PIPE_MSG_DATA)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523) synthvid_recv_sub(hdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524) } while (bytes_recvd > 0 && ret == 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527) /* Check if the ver1 version is equal or greater than ver2 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528) static inline bool synthvid_ver_ge(u32 ver1, u32 ver2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530) if (SYNTHVID_VER_GET_MAJOR(ver1) > SYNTHVID_VER_GET_MAJOR(ver2) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531) (SYNTHVID_VER_GET_MAJOR(ver1) == SYNTHVID_VER_GET_MAJOR(ver2) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) SYNTHVID_VER_GET_MINOR(ver1) >= SYNTHVID_VER_GET_MINOR(ver2)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533) return true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535) return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538) /* Check synthetic video protocol version with the host */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539) static int synthvid_negotiate_ver(struct hv_device *hdev, u32 ver)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541) struct fb_info *info = hv_get_drvdata(hdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542) struct hvfb_par *par = info->par;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543) struct synthvid_msg *msg = (struct synthvid_msg *)par->init_buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544) int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545) unsigned long t;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547) memset(msg, 0, sizeof(struct synthvid_msg));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548) msg->vid_hdr.type = SYNTHVID_VERSION_REQUEST;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549) msg->vid_hdr.size = sizeof(struct synthvid_msg_hdr) +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550) sizeof(struct synthvid_version_req);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551) msg->ver_req.version = ver;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552) synthvid_send(hdev, msg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554) t = wait_for_completion_timeout(&par->wait, VSP_TIMEOUT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555) if (!t) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556) pr_err("Time out on waiting version response\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557) ret = -ETIMEDOUT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560) if (!msg->ver_resp.is_accepted) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561) ret = -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565) par->synthvid_version = ver;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566) pr_info("Synthvid Version major %d, minor %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567) SYNTHVID_VER_GET_MAJOR(ver), SYNTHVID_VER_GET_MINOR(ver));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573) /* Get current resolution from the host */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574) static int synthvid_get_supported_resolution(struct hv_device *hdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576) struct fb_info *info = hv_get_drvdata(hdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 577) struct hvfb_par *par = info->par;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 578) struct synthvid_msg *msg = (struct synthvid_msg *)par->init_buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 579) int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 580) unsigned long t;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 581) u8 index;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 582)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 583) memset(msg, 0, sizeof(struct synthvid_msg));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 584) msg->vid_hdr.type = SYNTHVID_RESOLUTION_REQUEST;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 585) msg->vid_hdr.size = sizeof(struct synthvid_msg_hdr) +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 586) sizeof(struct synthvid_supported_resolution_req);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 587)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 588) msg->resolution_req.maximum_resolution_count =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 589) SYNTHVID_MAX_RESOLUTION_COUNT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 590) synthvid_send(hdev, msg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 591)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 592) t = wait_for_completion_timeout(&par->wait, VSP_TIMEOUT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 593) if (!t) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 594) pr_err("Time out on waiting resolution response\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 595) ret = -ETIMEDOUT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 596) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 597) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 598)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 599) if (msg->resolution_resp.resolution_count == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 600) pr_err("No supported resolutions\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 601) ret = -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 602) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 603) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 604)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 605) index = msg->resolution_resp.default_resolution_index;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 606) if (index >= msg->resolution_resp.resolution_count) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 607) pr_err("Invalid resolution index: %d\n", index);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 608) ret = -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 609) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 610) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 611)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 612) screen_width =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 613) msg->resolution_resp.supported_resolution[index].width;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 614) screen_height =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 615) msg->resolution_resp.supported_resolution[index].height;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 616)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 617) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 618) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 619) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 620)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 621) /* Connect to VSP (Virtual Service Provider) on host */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 622) static int synthvid_connect_vsp(struct hv_device *hdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 623) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 624) struct fb_info *info = hv_get_drvdata(hdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 625) struct hvfb_par *par = info->par;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 626) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 627)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 628) ret = vmbus_open(hdev->channel, RING_BUFSIZE, RING_BUFSIZE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 629) NULL, 0, synthvid_receive, hdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 630) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 631) pr_err("Unable to open vmbus channel\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 632) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 633) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 634)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 635) /* Negotiate the protocol version with host */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 636) switch (vmbus_proto_version) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 637) case VERSION_WIN10:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 638) case VERSION_WIN10_V5:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 639) ret = synthvid_negotiate_ver(hdev, SYNTHVID_VERSION_WIN10);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 640) if (!ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 641) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 642) fallthrough;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 643) case VERSION_WIN8:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 644) case VERSION_WIN8_1:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 645) ret = synthvid_negotiate_ver(hdev, SYNTHVID_VERSION_WIN8);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 646) if (!ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 647) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 648) fallthrough;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 649) case VERSION_WS2008:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 650) case VERSION_WIN7:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 651) ret = synthvid_negotiate_ver(hdev, SYNTHVID_VERSION_WIN7);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 652) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 653) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 654) ret = synthvid_negotiate_ver(hdev, SYNTHVID_VERSION_WIN10);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 655) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 656) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 657)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 658) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 659) pr_err("Synthetic video device version not accepted\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 660) goto error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 661) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 662)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 663) if (par->synthvid_version == SYNTHVID_VERSION_WIN7)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 664) screen_depth = SYNTHVID_DEPTH_WIN7;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 665) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 666) screen_depth = SYNTHVID_DEPTH_WIN8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 667)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 668) if (synthvid_ver_ge(par->synthvid_version, SYNTHVID_VERSION_WIN10)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 669) ret = synthvid_get_supported_resolution(hdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 670) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 671) pr_info("Failed to get supported resolution from host, use default\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 672) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 673)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 674) screen_fb_size = hdev->channel->offermsg.offer.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 675) mmio_megabytes * 1024 * 1024;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 676)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 677) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 678)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 679) error:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 680) vmbus_close(hdev->channel);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 681) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 682) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 683)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 684) /* Send VRAM and Situation messages to the host */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 685) static int synthvid_send_config(struct hv_device *hdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 686) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 687) struct fb_info *info = hv_get_drvdata(hdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 688) struct hvfb_par *par = info->par;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 689) struct synthvid_msg *msg = (struct synthvid_msg *)par->init_buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 690) int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 691) unsigned long t;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 692)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 693) /* Send VRAM location */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 694) memset(msg, 0, sizeof(struct synthvid_msg));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 695) msg->vid_hdr.type = SYNTHVID_VRAM_LOCATION;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 696) msg->vid_hdr.size = sizeof(struct synthvid_msg_hdr) +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 697) sizeof(struct synthvid_vram_location);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 698) msg->vram.user_ctx = msg->vram.vram_gpa = par->mmio_pp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 699) msg->vram.is_vram_gpa_specified = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 700) synthvid_send(hdev, msg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 701)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 702) t = wait_for_completion_timeout(&par->wait, VSP_TIMEOUT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 703) if (!t) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 704) pr_err("Time out on waiting vram location ack\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 705) ret = -ETIMEDOUT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 706) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 707) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 708) if (msg->vram_ack.user_ctx != par->mmio_pp) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 709) pr_err("Unable to set VRAM location\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 710) ret = -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 711) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 712) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 713)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 714) /* Send pointer and situation update */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 715) synthvid_send_ptr(hdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 716) synthvid_send_situ(hdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 717)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 718) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 719) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 720) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 721)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 722)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 723) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 724) * Delayed work callback:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 725) * It is scheduled to call whenever update request is received and it has
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 726) * not been called in last HVFB_ONDEMAND_THROTTLE time interval.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 727) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 728) static void hvfb_update_work(struct work_struct *w)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 729) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 730) struct hvfb_par *par = container_of(w, struct hvfb_par, dwork.work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 731) struct fb_info *info = par->info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 732) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 733) int x1, x2, y1, y2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 734) int j;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 735)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 736) spin_lock_irqsave(&par->delayed_refresh_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 737) /* Reset the request flag */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 738) par->delayed_refresh = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 739)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 740) /* Store the dirty rectangle to local variables */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 741) x1 = par->x1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 742) x2 = par->x2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 743) y1 = par->y1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 744) y2 = par->y2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 745)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 746) /* Clear dirty rectangle */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 747) par->x1 = par->y1 = INT_MAX;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 748) par->x2 = par->y2 = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 749)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 750) spin_unlock_irqrestore(&par->delayed_refresh_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 751)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 752) if (x1 > info->var.xres || x2 > info->var.xres ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 753) y1 > info->var.yres || y2 > info->var.yres || x2 <= x1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 754) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 755)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 756) /* Copy the dirty rectangle to frame buffer memory */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 757) if (par->need_docopy)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 758) for (j = y1; j < y2; j++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 759) hvfb_docopy(par,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 760) j * info->fix.line_length +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 761) (x1 * screen_depth / 8),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 762) (x2 - x1) * screen_depth / 8);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 763)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 764) /* Refresh */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 765) if (par->fb_ready && par->update)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 766) synthvid_update(info, x1, y1, x2, y2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 767) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 768)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 769) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 770) * Control the on-demand refresh frequency. It schedules a delayed
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 771) * screen update if it has not yet.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 772) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 773) static void hvfb_ondemand_refresh_throttle(struct hvfb_par *par,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 774) int x1, int y1, int w, int h)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 775) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 776) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 777) int x2 = x1 + w;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 778) int y2 = y1 + h;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 779)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 780) spin_lock_irqsave(&par->delayed_refresh_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 781)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 782) /* Merge dirty rectangle */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 783) par->x1 = min_t(int, par->x1, x1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 784) par->y1 = min_t(int, par->y1, y1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 785) par->x2 = max_t(int, par->x2, x2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 786) par->y2 = max_t(int, par->y2, y2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 787)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 788) /* Schedule a delayed screen update if not yet */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 789) if (par->delayed_refresh == false) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 790) schedule_delayed_work(&par->dwork,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 791) HVFB_ONDEMAND_THROTTLE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 792) par->delayed_refresh = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 793) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 794)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 795) spin_unlock_irqrestore(&par->delayed_refresh_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 796) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 797)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 798) static int hvfb_on_panic(struct notifier_block *nb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 799) unsigned long e, void *p)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 800) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 801) struct hvfb_par *par;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 802) struct fb_info *info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 803)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 804) par = container_of(nb, struct hvfb_par, hvfb_panic_nb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 805) par->synchronous_fb = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 806) info = par->info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 807) if (par->need_docopy)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 808) hvfb_docopy(par, 0, dio_fb_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 809) synthvid_update(info, 0, 0, INT_MAX, INT_MAX);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 810)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 811) return NOTIFY_DONE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 812) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 813)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 814) /* Framebuffer operation handlers */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 815)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 816) static int hvfb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 817) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 818) if (var->xres < HVFB_WIDTH_MIN || var->yres < HVFB_HEIGHT_MIN ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 819) var->xres > screen_width || var->yres > screen_height ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 820) var->bits_per_pixel != screen_depth)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 821) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 822)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 823) var->xres_virtual = var->xres;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 824) var->yres_virtual = var->yres;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 825)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 826) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 827) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 828)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 829) static int hvfb_set_par(struct fb_info *info)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 830) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 831) struct hv_device *hdev = device_to_hv_device(info->device);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 832)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 833) return synthvid_send_situ(hdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 834) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 835)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 836)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 837) static inline u32 chan_to_field(u32 chan, struct fb_bitfield *bf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 838) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 839) return ((chan & 0xffff) >> (16 - bf->length)) << bf->offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 840) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 841)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 842) static int hvfb_setcolreg(unsigned regno, unsigned red, unsigned green,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 843) unsigned blue, unsigned transp, struct fb_info *info)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 844) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 845) u32 *pal = info->pseudo_palette;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 846)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 847) if (regno > 15)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 848) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 849)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 850) pal[regno] = chan_to_field(red, &info->var.red)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 851) | chan_to_field(green, &info->var.green)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 852) | chan_to_field(blue, &info->var.blue)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 853) | chan_to_field(transp, &info->var.transp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 854)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 855) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 856) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 857)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 858) static int hvfb_blank(int blank, struct fb_info *info)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 859) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 860) return 1; /* get fb_blank to set the colormap to all black */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 861) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 862)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 863) static void hvfb_cfb_fillrect(struct fb_info *p,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 864) const struct fb_fillrect *rect)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 865) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 866) struct hvfb_par *par = p->par;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 867)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 868) cfb_fillrect(p, rect);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 869) if (par->synchronous_fb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 870) synthvid_update(p, 0, 0, INT_MAX, INT_MAX);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 871) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 872) hvfb_ondemand_refresh_throttle(par, rect->dx, rect->dy,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 873) rect->width, rect->height);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 874) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 875)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 876) static void hvfb_cfb_copyarea(struct fb_info *p,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 877) const struct fb_copyarea *area)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 878) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 879) struct hvfb_par *par = p->par;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 880)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 881) cfb_copyarea(p, area);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 882) if (par->synchronous_fb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 883) synthvid_update(p, 0, 0, INT_MAX, INT_MAX);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 884) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 885) hvfb_ondemand_refresh_throttle(par, area->dx, area->dy,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 886) area->width, area->height);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 887) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 888)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 889) static void hvfb_cfb_imageblit(struct fb_info *p,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 890) const struct fb_image *image)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 891) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 892) struct hvfb_par *par = p->par;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 893)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 894) cfb_imageblit(p, image);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 895) if (par->synchronous_fb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 896) synthvid_update(p, 0, 0, INT_MAX, INT_MAX);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 897) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 898) hvfb_ondemand_refresh_throttle(par, image->dx, image->dy,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 899) image->width, image->height);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 900) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 901)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 902) static const struct fb_ops hvfb_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 903) .owner = THIS_MODULE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 904) .fb_check_var = hvfb_check_var,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 905) .fb_set_par = hvfb_set_par,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 906) .fb_setcolreg = hvfb_setcolreg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 907) .fb_fillrect = hvfb_cfb_fillrect,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 908) .fb_copyarea = hvfb_cfb_copyarea,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 909) .fb_imageblit = hvfb_cfb_imageblit,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 910) .fb_blank = hvfb_blank,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 911) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 912)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 913)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 914) /* Get options from kernel paramenter "video=" */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 915) static void hvfb_get_option(struct fb_info *info)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 916) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 917) struct hvfb_par *par = info->par;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 918) char *opt = NULL, *p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 919) uint x = 0, y = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 920)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 921) if (fb_get_options(KBUILD_MODNAME, &opt) || !opt || !*opt)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 922) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 923)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 924) p = strsep(&opt, "x");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 925) if (!*p || kstrtouint(p, 0, &x) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 926) !opt || !*opt || kstrtouint(opt, 0, &y)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 927) pr_err("Screen option is invalid: skipped\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 928) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 929) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 930)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 931) if (x < HVFB_WIDTH_MIN || y < HVFB_HEIGHT_MIN ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 932) (synthvid_ver_ge(par->synthvid_version, SYNTHVID_VERSION_WIN10) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 933) (x * y * screen_depth / 8 > screen_fb_size)) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 934) (par->synthvid_version == SYNTHVID_VERSION_WIN8 &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 935) x * y * screen_depth / 8 > SYNTHVID_FB_SIZE_WIN8) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 936) (par->synthvid_version == SYNTHVID_VERSION_WIN7 &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 937) (x > SYNTHVID_WIDTH_MAX_WIN7 || y > SYNTHVID_HEIGHT_MAX_WIN7))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 938) pr_err("Screen resolution option is out of range: skipped\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 939) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 940) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 941)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 942) screen_width = x;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 943) screen_height = y;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 944) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 945) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 946)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 947) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 948) * Allocate enough contiguous physical memory.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 949) * Return physical address if succeeded or -1 if failed.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 950) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 951) static phys_addr_t hvfb_get_phymem(struct hv_device *hdev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 952) unsigned int request_size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 953) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 954) struct page *page = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 955) dma_addr_t dma_handle;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 956) void *vmem;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 957) phys_addr_t paddr = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 958) unsigned int order = get_order(request_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 959)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 960) if (request_size == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 961) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 962)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 963) if (order < MAX_ORDER) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 964) /* Call alloc_pages if the size is less than 2^MAX_ORDER */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 965) page = alloc_pages(GFP_KERNEL | __GFP_ZERO, order);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 966) if (!page)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 967) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 968)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 969) paddr = (page_to_pfn(page) << PAGE_SHIFT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 970) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 971) /* Allocate from CMA */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 972) hdev->device.coherent_dma_mask = DMA_BIT_MASK(64);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 973)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 974) vmem = dma_alloc_coherent(&hdev->device,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 975) round_up(request_size, PAGE_SIZE),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 976) &dma_handle,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 977) GFP_KERNEL | __GFP_NOWARN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 978)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 979) if (!vmem)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 980) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 981)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 982) paddr = virt_to_phys(vmem);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 983) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 984)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 985) return paddr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 986) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 987)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 988) /* Release contiguous physical memory */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 989) static void hvfb_release_phymem(struct hv_device *hdev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 990) phys_addr_t paddr, unsigned int size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 991) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 992) unsigned int order = get_order(size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 993)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 994) if (order < MAX_ORDER)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 995) __free_pages(pfn_to_page(paddr >> PAGE_SHIFT), order);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 996) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 997) dma_free_coherent(&hdev->device,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 998) round_up(size, PAGE_SIZE),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 999) phys_to_virt(paddr),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1000) paddr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1001) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1002)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1003)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1004) /* Get framebuffer memory from Hyper-V video pci space */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1005) static int hvfb_getmem(struct hv_device *hdev, struct fb_info *info)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1006) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1007) struct hvfb_par *par = info->par;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1008) struct pci_dev *pdev = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1009) void __iomem *fb_virt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1010) int gen2vm = efi_enabled(EFI_BOOT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1011) resource_size_t pot_start, pot_end;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1012) phys_addr_t paddr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1013) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1014)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1015) info->apertures = alloc_apertures(1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1016) if (!info->apertures)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1017) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1018)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1019) if (!gen2vm) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1020) pdev = pci_get_device(PCI_VENDOR_ID_MICROSOFT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1021) PCI_DEVICE_ID_HYPERV_VIDEO, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1022) if (!pdev) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1023) pr_err("Unable to find PCI Hyper-V video\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1024) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1025) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1026)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1027) info->apertures->ranges[0].base = pci_resource_start(pdev, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1028) info->apertures->ranges[0].size = pci_resource_len(pdev, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1029)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1030) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1031) * For Gen 1 VM, we can directly use the contiguous memory
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1032) * from VM. If we succeed, deferred IO happens directly
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1033) * on this allocated framebuffer memory, avoiding extra
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1034) * memory copy.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1035) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1036) paddr = hvfb_get_phymem(hdev, screen_fb_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1037) if (paddr != (phys_addr_t) -1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1038) par->mmio_pp = paddr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1039) par->mmio_vp = par->dio_vp = __va(paddr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1040)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1041) info->fix.smem_start = paddr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1042) info->fix.smem_len = screen_fb_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1043) info->screen_base = par->mmio_vp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1044) info->screen_size = screen_fb_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1045)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1046) par->need_docopy = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1047) goto getmem_done;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1048) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1049) pr_info("Unable to allocate enough contiguous physical memory on Gen 1 VM. Using MMIO instead.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1050) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1051) info->apertures->ranges[0].base = screen_info.lfb_base;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1052) info->apertures->ranges[0].size = screen_info.lfb_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1053) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1054)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1055) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1056) * Cannot use the contiguous physical memory.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1057) * Allocate mmio space for framebuffer.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1058) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1059) dio_fb_size =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1060) screen_width * screen_height * screen_depth / 8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1061)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1062) if (gen2vm) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1063) pot_start = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1064) pot_end = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1065) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1066) if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1067) pci_resource_len(pdev, 0) < screen_fb_size) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1068) pr_err("Resource not available or (0x%lx < 0x%lx)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1069) (unsigned long) pci_resource_len(pdev, 0),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1070) (unsigned long) screen_fb_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1071) goto err1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1072) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1073)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1074) pot_end = pci_resource_end(pdev, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1075) pot_start = pot_end - screen_fb_size + 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1076) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1077)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1078) ret = vmbus_allocate_mmio(&par->mem, hdev, pot_start, pot_end,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1079) screen_fb_size, 0x100000, true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1080) if (ret != 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1081) pr_err("Unable to allocate framebuffer memory\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1082) goto err1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1083) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1084)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1085) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1086) * Map the VRAM cacheable for performance. This is also required for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1087) * VM Connect to display properly for ARM64 Linux VM, as the host also
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1088) * maps the VRAM cacheable.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1089) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1090) fb_virt = ioremap_cache(par->mem->start, screen_fb_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1091) if (!fb_virt)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1092) goto err2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1093)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1094) /* Allocate memory for deferred IO */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1095) par->dio_vp = vzalloc(round_up(dio_fb_size, PAGE_SIZE));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1096) if (par->dio_vp == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1097) goto err3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1098)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1099) /* Physical address of FB device */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1100) par->mmio_pp = par->mem->start;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1101) /* Virtual address of FB device */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1102) par->mmio_vp = (unsigned char *) fb_virt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1103)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1104) info->fix.smem_start = par->mem->start;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1105) info->fix.smem_len = dio_fb_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1106) info->screen_base = par->dio_vp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1107) info->screen_size = dio_fb_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1108)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1109) getmem_done:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1110) remove_conflicting_framebuffers(info->apertures,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1111) KBUILD_MODNAME, false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1112)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1113) if (gen2vm) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1114) /* framebuffer is reallocated, clear screen_info to avoid misuse from kexec */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1115) screen_info.lfb_size = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1116) screen_info.lfb_base = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1117) screen_info.orig_video_isVGA = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1118) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1119) pci_dev_put(pdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1120) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1121)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1122) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1123)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1124) err3:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1125) iounmap(fb_virt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1126) err2:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1127) vmbus_free_mmio(par->mem->start, screen_fb_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1128) par->mem = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1129) err1:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1130) if (!gen2vm)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1131) pci_dev_put(pdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1132)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1133) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1134) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1135)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1136) /* Release the framebuffer */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1137) static void hvfb_putmem(struct hv_device *hdev, struct fb_info *info)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1138) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1139) struct hvfb_par *par = info->par;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1140)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1141) if (par->need_docopy) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1142) vfree(par->dio_vp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1143) iounmap(info->screen_base);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1144) vmbus_free_mmio(par->mem->start, screen_fb_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1145) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1146) hvfb_release_phymem(hdev, info->fix.smem_start,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1147) screen_fb_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1148) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1149)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1150) par->mem = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1151) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1152)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1153)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1154) static int hvfb_probe(struct hv_device *hdev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1155) const struct hv_vmbus_device_id *dev_id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1156) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1157) struct fb_info *info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1158) struct hvfb_par *par;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1159) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1160)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1161) info = framebuffer_alloc(sizeof(struct hvfb_par), &hdev->device);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1162) if (!info)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1163) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1164)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1165) par = info->par;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1166) par->info = info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1167) par->fb_ready = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1168) par->need_docopy = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1169) init_completion(&par->wait);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1170) INIT_DELAYED_WORK(&par->dwork, hvfb_update_work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1171)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1172) par->delayed_refresh = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1173) spin_lock_init(&par->delayed_refresh_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1174) par->x1 = par->y1 = INT_MAX;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1175) par->x2 = par->y2 = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1176)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1177) /* Connect to VSP */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1178) hv_set_drvdata(hdev, info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1179) ret = synthvid_connect_vsp(hdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1180) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1181) pr_err("Unable to connect to VSP\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1182) goto error1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1183) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1184)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1185) hvfb_get_option(info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1186) pr_info("Screen resolution: %dx%d, Color depth: %d, Frame buffer size: %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1187) screen_width, screen_height, screen_depth, screen_fb_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1188)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1189) ret = hvfb_getmem(hdev, info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1190) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1191) pr_err("No memory for framebuffer\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1192) goto error2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1193) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1194)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1195) /* Set up fb_info */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1196) info->flags = FBINFO_DEFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1197)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1198) info->var.xres_virtual = info->var.xres = screen_width;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1199) info->var.yres_virtual = info->var.yres = screen_height;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1200) info->var.bits_per_pixel = screen_depth;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1201)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1202) if (info->var.bits_per_pixel == 16) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1203) info->var.red = (struct fb_bitfield){11, 5, 0};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1204) info->var.green = (struct fb_bitfield){5, 6, 0};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1205) info->var.blue = (struct fb_bitfield){0, 5, 0};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1206) info->var.transp = (struct fb_bitfield){0, 0, 0};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1207) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1208) info->var.red = (struct fb_bitfield){16, 8, 0};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1209) info->var.green = (struct fb_bitfield){8, 8, 0};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1210) info->var.blue = (struct fb_bitfield){0, 8, 0};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1211) info->var.transp = (struct fb_bitfield){24, 8, 0};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1212) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1213)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1214) info->var.activate = FB_ACTIVATE_NOW;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1215) info->var.height = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1216) info->var.width = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1217) info->var.vmode = FB_VMODE_NONINTERLACED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1218)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1219) strcpy(info->fix.id, KBUILD_MODNAME);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1220) info->fix.type = FB_TYPE_PACKED_PIXELS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1221) info->fix.visual = FB_VISUAL_TRUECOLOR;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1222) info->fix.line_length = screen_width * screen_depth / 8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1223) info->fix.accel = FB_ACCEL_NONE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1224)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1225) info->fbops = &hvfb_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1226) info->pseudo_palette = par->pseudo_palette;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1227)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1228) /* Initialize deferred IO */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1229) info->fbdefio = &synthvid_defio;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1230) fb_deferred_io_init(info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1231)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1232) /* Send config to host */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1233) ret = synthvid_send_config(hdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1234) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1235) goto error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1236)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1237) ret = register_framebuffer(info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1238) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1239) pr_err("Unable to register framebuffer\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1240) goto error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1241) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1242)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1243) par->fb_ready = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1244)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1245) par->synchronous_fb = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1246) par->hvfb_panic_nb.notifier_call = hvfb_on_panic;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1247) atomic_notifier_chain_register(&panic_notifier_list,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1248) &par->hvfb_panic_nb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1249)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1250) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1251)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1252) error:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1253) fb_deferred_io_cleanup(info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1254) hvfb_putmem(hdev, info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1255) error2:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1256) vmbus_close(hdev->channel);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1257) error1:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1258) cancel_delayed_work_sync(&par->dwork);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1259) hv_set_drvdata(hdev, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1260) framebuffer_release(info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1261) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1262) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1263)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1264)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1265) static int hvfb_remove(struct hv_device *hdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1266) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1267) struct fb_info *info = hv_get_drvdata(hdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1268) struct hvfb_par *par = info->par;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1269)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1270) atomic_notifier_chain_unregister(&panic_notifier_list,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1271) &par->hvfb_panic_nb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1272)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1273) par->update = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1274) par->fb_ready = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1275)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1276) fb_deferred_io_cleanup(info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1277)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1278) unregister_framebuffer(info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1279) cancel_delayed_work_sync(&par->dwork);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1280)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1281) vmbus_close(hdev->channel);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1282) hv_set_drvdata(hdev, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1283)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1284) hvfb_putmem(hdev, info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1285) framebuffer_release(info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1286)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1287) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1288) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1289)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1290) static int hvfb_suspend(struct hv_device *hdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1291) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1292) struct fb_info *info = hv_get_drvdata(hdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1293) struct hvfb_par *par = info->par;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1294)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1295) console_lock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1296)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1297) /* 1 means do suspend */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1298) fb_set_suspend(info, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1299)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1300) cancel_delayed_work_sync(&par->dwork);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1301) cancel_delayed_work_sync(&info->deferred_work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1302)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1303) par->update_saved = par->update;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1304) par->update = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1305) par->fb_ready = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1306)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1307) vmbus_close(hdev->channel);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1308)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1309) console_unlock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1310)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1311) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1312) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1313)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1314) static int hvfb_resume(struct hv_device *hdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1315) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1316) struct fb_info *info = hv_get_drvdata(hdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1317) struct hvfb_par *par = info->par;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1318) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1319)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1320) console_lock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1321)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1322) ret = synthvid_connect_vsp(hdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1323) if (ret != 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1324) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1325)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1326) ret = synthvid_send_config(hdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1327) if (ret != 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1328) vmbus_close(hdev->channel);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1329) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1330) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1331)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1332) par->fb_ready = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1333) par->update = par->update_saved;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1334)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1335) schedule_delayed_work(&info->deferred_work, info->fbdefio->delay);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1336) schedule_delayed_work(&par->dwork, HVFB_UPDATE_DELAY);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1337)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1338) /* 0 means do resume */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1339) fb_set_suspend(info, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1340)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1341) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1342) console_unlock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1343)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1344) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1345) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1346)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1347)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1348) static const struct pci_device_id pci_stub_id_table[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1349) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1350) .vendor = PCI_VENDOR_ID_MICROSOFT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1351) .device = PCI_DEVICE_ID_HYPERV_VIDEO,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1352) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1353) { /* end of list */ }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1354) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1355)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1356) static const struct hv_vmbus_device_id id_table[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1357) /* Synthetic Video Device GUID */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1358) {HV_SYNTHVID_GUID},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1359) {}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1360) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1361)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1362) MODULE_DEVICE_TABLE(pci, pci_stub_id_table);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1363) MODULE_DEVICE_TABLE(vmbus, id_table);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1364)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1365) static struct hv_driver hvfb_drv = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1366) .name = KBUILD_MODNAME,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1367) .id_table = id_table,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1368) .probe = hvfb_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1369) .remove = hvfb_remove,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1370) .suspend = hvfb_suspend,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1371) .resume = hvfb_resume,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1372) .driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1373) .probe_type = PROBE_PREFER_ASYNCHRONOUS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1374) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1375) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1376)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1377) static int hvfb_pci_stub_probe(struct pci_dev *pdev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1378) const struct pci_device_id *ent)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1379) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1380) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1381) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1382)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1383) static void hvfb_pci_stub_remove(struct pci_dev *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1384) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1385) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1386)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1387) static struct pci_driver hvfb_pci_stub_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1388) .name = KBUILD_MODNAME,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1389) .id_table = pci_stub_id_table,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1390) .probe = hvfb_pci_stub_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1391) .remove = hvfb_pci_stub_remove,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1392) .driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1393) .probe_type = PROBE_PREFER_ASYNCHRONOUS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1394) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1395) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1396)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1397) static int __init hvfb_drv_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1398) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1399) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1400)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1401) ret = vmbus_driver_register(&hvfb_drv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1402) if (ret != 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1403) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1404)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1405) ret = pci_register_driver(&hvfb_pci_stub_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1406) if (ret != 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1407) vmbus_driver_unregister(&hvfb_drv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1408) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1409) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1410)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1411) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1412) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1413)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1414) static void __exit hvfb_drv_exit(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1415) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1416) pci_unregister_driver(&hvfb_pci_stub_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1417) vmbus_driver_unregister(&hvfb_drv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1418) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1419)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1420) module_init(hvfb_drv_init);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1421) module_exit(hvfb_drv_exit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1422)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1423) MODULE_LICENSE("GPL");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1424) MODULE_DESCRIPTION("Microsoft Hyper-V Synthetic Video Frame Buffer Driver");
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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