mirror of
https://github.com/akuker/RASCSI.git
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133 lines
3.6 KiB
C++
133 lines
3.6 KiB
C++
//---------------------------------------------------------------------------
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//
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// SCSI Target Emulator RaSCSI (*^..^*)
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// for Raspberry Pi
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//
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// Copyright (C) 2020-2021 akuker
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// Copyright (C) 2020 joshua stein <jcs@jcs.org>
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//
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// Licensed under the BSD 3-Clause License.
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// See LICENSE file in the project root folder.
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//
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// [ Emulation of the Radius PowerView SCSI Display Adapter ]
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//
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// Note: This requires the Radius RadiusWare driver.
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//
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// Framebuffer integration originally done by Joshua Stein:
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// https://github.com/jcs/RASCSI/commit/6da9e9f3ffcd38eb89413cd445f7407739c54bca
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//
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//---------------------------------------------------------------------------
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#pragma once
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#include "os.h"
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#include "disk.h"
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#include <map>
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#include <string>
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#include "../rascsi.h"
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#include <linux/fb.h>
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//===========================================================================
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//
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// Radius PowerView
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//
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//===========================================================================
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class SCSIPowerView: public Disk
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{
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private:
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typedef struct _command_t {
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const char* name;
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void (SCSIPowerView::*execute)(SASIDEV *);
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_command_t(const char* _name, void (SCSIPowerView::*_execute)(SASIDEV *)) : name(_name), execute(_execute) { };
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} command_t;
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std::map<SCSIDEV::scsi_command, command_t*> commands;
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SASIDEV::ctrl_t *ctrl;
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enum eColorDepth_t : uint16_t {eColorsNone=0x0000, eColorsBW=0x0001, eColors16=0x0010, eColors256=0x0100};
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eColorDepth_t color_depth;
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void AddCommand(SCSIDEV::scsi_command, const char*, void (SCSIPowerView::*)(SASIDEV *));
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void dump_command(SASIDEV *controller);
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// Largest framebuffer supported by the Radius PowerView is 800x600 at 16-bit color (2 bytes per pixel)
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const int POWERVIEW_BUFFER_SIZE = (800 * 600 * 2);
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DWORD m_powerview_resolution_x;
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DWORD m_powerview_resolution_y;
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void fbcon_cursor(bool blank);
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void fbcon_blank(bool blank);
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void fbcon_text(char* message);
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void SetPixel(uint32_t x, uint32_t y, uint32_t r, uint32_t g, uint32_t b);
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public:
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SCSIPowerView();
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~SCSIPowerView();
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bool Init(const map<string, string>&) override;
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void Open(const Filepath& path) override;
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// // Commands
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int Inquiry(const DWORD *cdb, BYTE *buffer) override;
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int Read(const DWORD *cdb, BYTE *buf, uint64_t block) override;
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bool Write(const DWORD *cdb, const BYTE *buf, const DWORD length);
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bool WriteFrameBuffer(const DWORD *cdb, const BYTE *buf, const DWORD length);
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bool WriteColorPalette(const DWORD *cdb, const BYTE *buf, const DWORD length);
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bool WriteConfiguration(const DWORD *cdb, const BYTE *buf, const DWORD length);
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bool WriteUnknownCC(const DWORD *cdb, const BYTE *buf, const DWORD length);
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void CmdReadConfig(SASIDEV *controller);
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void CmdWriteConfig(SASIDEV *controller);
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void CmdWriteFramebuffer(SASIDEV *controller);
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void CmdWriteColorPalette(SASIDEV *controller);
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void UnknownCommandCC(SASIDEV *controller);
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bool Dispatch(SCSIDEV *) override;
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bool ReceiveBuffer(int len, BYTE *buffer);
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void ClearFrameBuffer(DWORD blank_color);
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private:
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uint32_t screen_width_px;
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uint32_t screen_height_px;
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struct fb_var_screeninfo fbinfo;
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struct fb_fix_screeninfo fbfixinfo;
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// The maximum color depth is 16 bits
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BYTE color_palette[0x10000];
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int color_palette_length = 0;
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BYTE unknown_cc_data[0x10000];
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int unknown_cc_data_length = 0;
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static const BYTE default_color_palette_bw[8];
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static const BYTE default_color_palette_16[64];
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static const BYTE default_color_palette_256[1024];
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int fbfd;
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char *fb;
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int fbwidth;
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int fbheight;
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int fblinelen;
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int fbsize;
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int fbbpp;
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static const BYTE m_inquiry_response[];
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DWORD framebuffer_black;
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DWORD framebuffer_blue;
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DWORD framebuffer_yellow;
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DWORD framebuffer_red;
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};
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