dingusppc/devices/video/atirage.h
2022-05-21 14:51:27 +02:00

95 lines
3.1 KiB
C++

/*
DingusPPC - The Experimental PowerPC Macintosh emulator
Copyright (C) 2018-21 divingkatae and maximum
(theweirdo) spatium
(Contact divingkatae#1017 or powermax#2286 on Discord for more info)
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
#ifndef ATI_RAGE_H
#define ATI_RAGE_H
#include <devices/common/pci/pcidevice.h>
#include <devices/video/atimach64defs.h>
#include <devices/video/displayid.h>
#include <devices/video/videoctrl.h>
#include <cinttypes>
#include <memory>
/* Mach64 PLL register indices. */
enum {
PLL_REF_DIV = 2, // reference divider, same for all Mach64 clocks
PLL_VCLK_CNTL = 5,
VCLK_POST_DIV = 6,
VCLK0_FB_DIV = 7, // feedback divider for VCLK0
VCLK1_FB_DIV = 8, // feedback divider for VCLK1
VCLK2_FB_DIV = 9, // feedback divider for VCLK2
VCLK3_FB_DIV = 10, // feedback divider for VCLK3
PLL_EXT_CNTL = 11,
};
class ATIRage : public PCIDevice, public VideoCtrlBase {
public:
ATIRage(uint16_t dev_id, uint32_t vmem_size_mb);
~ATIRage() = default;
/* MMIODevice methods */
uint32_t read(uint32_t reg_start, uint32_t offset, int size);
void write(uint32_t reg_start, uint32_t offset, uint32_t value, int size);
/* PCI device methods */
bool supports_io_space(void) {
return true;
};
uint32_t pci_cfg_read(uint32_t reg_offs, uint32_t size);
void pci_cfg_write(uint32_t reg_offs, uint32_t value, uint32_t size);
/* I/O space access methods */
bool pci_io_read(uint32_t offset, uint32_t size, uint32_t* res);
bool pci_io_write(uint32_t offset, uint32_t value, uint32_t size);
protected:
void notify_bar_change(int bar_num);
const char* get_reg_name(uint32_t reg_offset);
bool io_access_allowed(uint32_t offset);
uint32_t read_reg(uint32_t offset, uint32_t size);
void write_reg(uint32_t offset, uint32_t value, uint32_t size);
float calc_pll_freq(int scale, int fb_div);
void verbose_pixel_format(int crtc_index);
void crtc_enable();
void draw_hw_cursor(uint8_t *dst_buf, int dst_pitch);
private:
uint8_t mm_regs[2048] = {0}; // internal registers
uint8_t plls[64] = {0}; // internal PLL registers
/* Video RAM variables */
std::unique_ptr<uint8_t[]> vram_ptr;
uint32_t vram_size;
uint32_t aperture_base = 0;
uint32_t io_base = 0;
uint8_t user_cfg = 8;
std::unique_ptr<DisplayID> disp_id;
int comp_index; /* color component index for DAC palette access */
};
#endif /* ATI_RAGE_H */