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/* |
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* Copyright (C) 2006-2007 Anders Gavare. All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions are met: |
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* |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in the |
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* documentation and/or other materials provided with the distribution. |
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* 3. The name of the author may not be used to endorse or promote products |
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* derived from this software without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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* SUCH DAMAGE. |
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* |
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* |
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* $Id: dev_pvr.c,v 1.20 2006/12/30 13:30:59 debug Exp $ |
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* |
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* PowerVR CLX2 (Graphics controller used in the Dreamcast). Implemented by |
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* reading http://www.ludd.luth.se/~jlo/dc/powervr-reg.txt and |
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* http://mc.pp.se/dc/pvr.html, source code of various demos and KalistOS, |
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* and doing a lot of guessing. |
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* |
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* TODO: Almost everything |
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* |
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* x) Change resolution during runtime (PAL/NTSC/???) |
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* |
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* x) Lots of work on the 3D "Tile Accelerator" engine. |
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* Recognize commands and turn into OpenGL or similar |
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* commands on the host? |
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* Color clipping. |
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* Wire-frame when running on a host without XGL? |
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* |
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* Multiple lists of various kinds (6?). |
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* Lists growing downwards! |
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* Pixel clip for rendering. |
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* Real Rendering, using OpenGL if possible. |
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* Tile bins... with 6 pointers for each tile (?) |
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* PVR DMA. |
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*/ |
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|
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#include <stdio.h> |
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#include <stdlib.h> |
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#include <string.h> |
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|
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#include "cpu.h" |
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#include "device.h" |
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#include "devices.h" |
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#include "float_emul.h" |
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#include "machine.h" |
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#include "memory.h" |
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#include "misc.h" |
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#include "timer.h" |
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|
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#include "dreamcast_pvr.h" |
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#include "dreamcast_sysasicvar.h" |
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|
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|
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#define debug fatal |
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|
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#define INTERNAL_FB_ADDR 0x300000000ULL |
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#define PVR_FB_TICK_SHIFT 19 |
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|
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#define PVR_VBLANK_HZ 60.0 |
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#define PVR_MARGIN 16 |
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|
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struct pvr_data { |
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struct vfb_data *fb; |
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int fb_update_x1; |
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int fb_update_y1; |
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int fb_update_x2; |
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int fb_update_y2; |
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|
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struct timer *vblank_timer; |
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int vblank_interrupts_pending; |
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|
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/* PVR registers: */ |
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uint32_t reg[PVRREG_REGSIZE / sizeof(uint32_t)]; |
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|
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/* Calculated by pvr_geometry_updated(): */ |
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int xsize, ysize; |
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int bytes_per_pixel; |
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|
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/* Cached values (from registers): */ |
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/* DIWMODE: */ |
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int clock_double; |
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int strip_buffer_enabled; |
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int strip_length; |
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int argb8888_threshold; |
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int extend; |
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int pixelmode; |
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int line_double; |
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int display_enabled; |
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/* BRDCOLR: */ |
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int border_updated; |
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/* SYNCCONF: */ |
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int video_enabled; |
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int broadcast_standard; |
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int interlaced; |
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int h_sync_positive; |
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int v_sync_positive; |
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/* TILEBUF_SIZE: */ |
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int tilebuf_xsize; |
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int tilebuf_ysize; |
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|
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/* Tile Accelerator Command: */ |
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uint32_t ta[64 / sizeof(uint32_t)]; |
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|
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uint8_t *vram; |
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uint8_t *vram_alt; |
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}; |
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|
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struct pvr_data_alt { |
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struct pvr_data *d; |
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}; |
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|
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|
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#define REG(x) (d->reg[(x)/sizeof(uint32_t)]) |
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#define DEFAULT_WRITE REG(relative_addr) = idata; |
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|
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|
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/* |
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* pvr_fb_invalidate(): |
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*/ |
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static void pvr_fb_invalidate(struct pvr_data *d, int start, int stop) |
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{ |
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d->fb_update_x1 = d->fb_update_y1 = 0; |
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d->fb_update_x2 = d->xsize - 1; |
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d->fb_update_y2 = d->ysize - 1; |
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} |
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|
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|
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/* |
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* pvr_vblank_timer_tick(): |
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* |
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* This function is called PVR_VBLANK_HZ times per real-world second. Its job |
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* is to fake vertical retrace interrupts. |
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*/ |
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static void pvr_vblank_timer_tick(struct timer *t, void *extra) |
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{ |
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struct pvr_data *d = (struct pvr_data *) extra; |
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d->vblank_interrupts_pending ++; |
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} |
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|
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|
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/* |
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* pvr_geometry_updated(): |
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* |
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* This function should be called every time a register is written to which |
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* affects the framebuffer geometry (size, bit-depth, starting position, etc). |
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*/ |
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static void pvr_geometry_updated(struct pvr_data *d) |
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{ |
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/* Make sure to redraw border on geometry changes. */ |
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d->border_updated = 1; |
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|
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d->xsize = (REG(PVRREG_DIWSIZE) >> DIWSIZE_DPL_SHIFT) & DIWSIZE_MASK; |
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d->ysize = (REG(PVRREG_DIWSIZE) >> DIWSIZE_LPF_SHIFT) & DIWSIZE_MASK; |
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|
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/* E.g. 319x479 => 320x480 */ |
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d->xsize = (d->xsize + 1) * sizeof(uint32_t); |
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d->ysize ++; |
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|
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switch (d->pixelmode) { |
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case 0: |
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case 1: d->bytes_per_pixel = 2; break; |
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case 2: d->bytes_per_pixel = 3; break; |
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case 3: d->bytes_per_pixel = 4; break; |
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} |
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|
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d->xsize /= d->bytes_per_pixel; |
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|
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if (REG(PVRREG_DIWCONF) & DIWCONF_LR) |
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d->xsize /= 2; |
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|
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if (d->line_double) |
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d->ysize /= 2; |
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|
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/* Only show geometry debug message if output is enabled: */ |
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if (!d->video_enabled || !d->display_enabled) |
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return; |
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|
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debug("[ pvr_geometry_updated: %i x %i, ", d->xsize, d->ysize); |
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|
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switch (d->pixelmode) { |
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case 0: debug("RGB0555 (16-bit)"); break; |
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case 1: debug("RGB565 (16-bit)"); break; |
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case 2: debug("RGB888 (24-bit)"); break; |
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case 3: debug("RGB0888 (32-bit)"); break; |
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} |
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|
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debug(" ]\n"); |
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} |
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|
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|
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/* Ugly quick-hack: */ |
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static void line(struct pvr_data *d, int x1, int y1, int x2, int y2) |
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{ |
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int fb_base = REG(PVRREG_FB_RENDER_ADDR1); |
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int i; |
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for (i=0; i<256; i++) { |
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int px = (i * x2 + (256-i) * x1) >> 8; |
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int py = (i * y2 + (256-i) * y1) >> 8; |
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if (px > 0 && py > 0 && px < d->xsize && py < d->ysize) { |
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d->vram[fb_base + (px + py * d->xsize)* |
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d->bytes_per_pixel] = 255; |
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d->vram[fb_base + (px + py * d->xsize)* |
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d->bytes_per_pixel + 1] = 255; |
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} |
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} |
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} |
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|
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|
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/* |
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* pvr_render(): |
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* |
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* Render from the Object Buffer to the framebuffer. |
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* |
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* TODO: This function is totally bogus so far, the format of the Object |
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* Buffer is just a quick made-up hack to see if it works at all. |
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*/ |
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static void pvr_render(struct cpu *cpu, struct pvr_data *d) |
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{ |
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int ob_ofs = REG(PVRREG_OB_ADDR); |
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int fb_base = REG(PVRREG_FB_RENDER_ADDR1); |
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int wf_point_nr, texture = 0; |
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int wf_x[4], wf_y[4]; |
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|
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debug("[ pvr_render: rendering to FB offset 0x%x ]\n", fb_base); |
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|
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/* Clear all pixels first: */ |
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/* TODO */ |
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memset(d->vram + fb_base, 0, d->xsize * d->ysize * d->bytes_per_pixel); |
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|
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wf_point_nr = 0; |
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|
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for (;;) { |
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uint8_t cmd = d->vram[ob_ofs]; |
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|
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if (cmd == 0) |
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break; |
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else if (cmd == 1) { |
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int16_t px = d->vram[ob_ofs+2] + d->vram[ob_ofs+3]*256; |
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int16_t py = d->vram[ob_ofs+4] + d->vram[ob_ofs+5]*256; |
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|
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wf_x[wf_point_nr] = px; |
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wf_y[wf_point_nr] = py; |
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|
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wf_point_nr ++; |
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if (wf_point_nr == 4) { |
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#if 1 |
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line(d, wf_x[0], wf_y[0], wf_x[1], wf_y[1]); |
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line(d, wf_x[0], wf_y[0], wf_x[2], wf_y[2]); |
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line(d, wf_x[1], wf_y[1], wf_x[3], wf_y[3]); |
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line(d, wf_x[2], wf_y[2], wf_x[3], wf_y[3]); |
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wf_point_nr = 0; |
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wf_x[0] = wf_x[2]; wf_y[0] = wf_y[2]; |
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wf_x[1] = wf_x[3]; wf_y[1] = wf_y[3]; |
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#else |
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draw_texture(d, wf_x[0], wf_y[0], |
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wf_x[1], wf_y[1], |
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wf_x[2], wf_y[2], |
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wf_x[3], wf_y[3], texture); |
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#endif |
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} |
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|
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} else if (cmd == 2) { |
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wf_point_nr = 0; |
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texture = d->vram[ob_ofs+4] + (d->vram[ob_ofs+5] |
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<< 8) + (d->vram[ob_ofs+6] << 16) + |
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(d->vram[ob_ofs+7] << 24); |
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texture <<= 3; |
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texture &= 0x7fffff; |
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printf("TEXTURE = %x\n", texture); |
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} else { |
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fatal("pvr_render: internal error, unknown cmd\n"); |
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} |
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|
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ob_ofs += sizeof(uint64_t); |
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} |
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|
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SYSASIC_TRIGGER_EVENT(SYSASIC_EVENT_RENDERDONE); |
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} |
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|
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|
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/* |
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* pvr_reset_ta(): |
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* |
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* Reset the Tile Accelerator. |
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*/ |
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static void pvr_reset_ta(struct pvr_data *d) |
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{ |
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REG(PVRREG_DIWCONF) = DIWCONF_MAGIC; |
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} |
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|
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|
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/* |
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* pvr_reset(): |
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* |
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* Reset the PVR. |
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*/ |
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static void pvr_reset(struct pvr_data *d) |
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{ |
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/* TODO */ |
316 |
} |
317 |
|
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|
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/* |
320 |
* pvr_ta_init(): |
321 |
* |
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* Initialize the Tile Accelerator. This makes the TA ready to receive |
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* commands (via address 0x10000000). |
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*/ |
325 |
static void pvr_ta_init(struct cpu *cpu, struct pvr_data *d) |
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{ |
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REG(PVRREG_TA_OPB_POS) = REG(PVRREG_TA_OPB_START); |
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REG(PVRREG_TA_OB_POS) = REG(PVRREG_TA_OB_START); |
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} |
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|
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|
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/* |
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* pvr_ta_command(): |
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* |
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* Read a command (e.g. parts of a polygon primitive) from d->ta[], and output |
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* "compiled commands" into the Object list and Object Pointer list. |
337 |
*/ |
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static void pvr_ta_command(struct cpu *cpu, struct pvr_data *d, int list_ofs) |
339 |
{ |
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int ob_ofs; |
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int16_t x, y; |
342 |
uint32_t *ta = &d->ta[list_ofs]; |
343 |
|
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#if 0 |
345 |
/* Dump the Tile Accelerator command for debugging: */ |
346 |
{ |
347 |
int i; |
348 |
fatal("TA cmd:"); |
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for (i=0; i<8; i++) |
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fatal(" %08x", (int) ta[i]); |
351 |
fatal("\n"); |
352 |
} |
353 |
#endif |
354 |
|
355 |
/* |
356 |
* TODO: REWRITE!!! |
357 |
* |
358 |
* THis is just a quick hack to see if I can get out at least |
359 |
* the pixel coordinates. |
360 |
*/ |
361 |
|
362 |
{ |
363 |
struct ieee_float_value fx, fy; |
364 |
ieee_interpret_float_value(ta[1], &fx, IEEE_FMT_S); |
365 |
ieee_interpret_float_value(ta[2], &fy, IEEE_FMT_S); |
366 |
x = fx.f; y = fy.f; |
367 |
} |
368 |
|
369 |
ob_ofs = REG(PVRREG_TA_OB_POS); |
370 |
|
371 |
switch (ta[0] >> 28) { |
372 |
case 0x8: |
373 |
d->vram[ob_ofs + 0] = 2; |
374 |
d->vram[ob_ofs + 4] = ta[3]; |
375 |
d->vram[ob_ofs + 5] = ta[3] >> 8; |
376 |
d->vram[ob_ofs + 6] = ta[3] >> 16; |
377 |
d->vram[ob_ofs + 7] = ta[3] >> 24; |
378 |
REG(PVRREG_TA_OB_POS) = ob_ofs + sizeof(uint64_t); |
379 |
break; |
380 |
case 0xe: |
381 |
case 0xf: |
382 |
/* Point. */ |
383 |
d->vram[ob_ofs + 0] = 1; |
384 |
d->vram[ob_ofs + 2] = x & 255; |
385 |
d->vram[ob_ofs + 3] = x >> 8; |
386 |
d->vram[ob_ofs + 4] = y & 255; |
387 |
d->vram[ob_ofs + 5] = y >> 8; |
388 |
REG(PVRREG_TA_OB_POS) = ob_ofs + sizeof(uint64_t); |
389 |
break; |
390 |
case 0x0: |
391 |
if (ta[1] == 0) { |
392 |
/* End of list. */ |
393 |
uint32_t opb_cfg = REG(PVRREG_TA_OPB_CFG); |
394 |
d->vram[ob_ofs + 0] = 0; |
395 |
REG(PVRREG_TA_OB_POS) = ob_ofs + sizeof(uint64_t); |
396 |
if (opb_cfg & TA_OPB_CFG_OPAQUEPOLY_MASK) |
397 |
SYSASIC_TRIGGER_EVENT(SYSASIC_EVENT_OPAQUEDONE); |
398 |
if (opb_cfg & TA_OPB_CFG_OPAQUEMOD_MASK) |
399 |
SYSASIC_TRIGGER_EVENT( |
400 |
SYSASIC_EVENT_OPAQUEMODDONE); |
401 |
if (opb_cfg & TA_OPB_CFG_TRANSPOLY_MASK) |
402 |
SYSASIC_TRIGGER_EVENT(SYSASIC_EVENT_TRANSDONE); |
403 |
if (opb_cfg & TA_OPB_CFG_TRANSMOD_MASK) |
404 |
SYSASIC_TRIGGER_EVENT( |
405 |
SYSASIC_EVENT_TRANSMODDONE); |
406 |
if (opb_cfg & TA_OPB_CFG_PUNCHTHROUGH_MASK) |
407 |
SYSASIC_TRIGGER_EVENT(SYSASIC_EVENT_PVR_PTDONE); |
408 |
} |
409 |
break; |
410 |
case 2: /* Ignore for now. */ |
411 |
case 3: /* Ignore for now. */ |
412 |
/* TODO */ |
413 |
break; |
414 |
default:fatal("Unimplemented top TA nibble %i\n", ta[0] >> 28); |
415 |
exit(1); |
416 |
} |
417 |
} |
418 |
|
419 |
|
420 |
DEVICE_ACCESS(pvr_ta) |
421 |
{ |
422 |
struct pvr_data *d = (struct pvr_data *) extra; |
423 |
uint64_t idata = 0, odata = 0; |
424 |
|
425 |
if (writeflag == MEM_WRITE) { |
426 |
idata = memory_readmax64(cpu, data, len); |
427 |
|
428 |
/* Write to the tile accelerator command buffer: */ |
429 |
d->ta[relative_addr / sizeof(uint32_t)] = idata; |
430 |
|
431 |
/* Execute the command, after a complete write: */ |
432 |
if (relative_addr == 0x1c) |
433 |
pvr_ta_command(cpu, d, 0); |
434 |
if (relative_addr == 0x3c) |
435 |
pvr_ta_command(cpu, d, 8); |
436 |
} else { |
437 |
odata = d->ta[relative_addr / sizeof(uint32_t)]; |
438 |
memory_writemax64(cpu, data, len, odata); |
439 |
} |
440 |
|
441 |
return 1; |
442 |
} |
443 |
|
444 |
|
445 |
DEVICE_ACCESS(pvr) |
446 |
{ |
447 |
struct pvr_data *d = (struct pvr_data *) extra; |
448 |
uint64_t idata = 0, odata = 0; |
449 |
|
450 |
if (writeflag == MEM_WRITE) |
451 |
idata = memory_readmax64(cpu, data, len); |
452 |
|
453 |
/* Default read action: Read from reg[]: */ |
454 |
if (writeflag == MEM_READ) |
455 |
odata = d->reg[relative_addr / sizeof(uint32_t)]; |
456 |
|
457 |
/* Fog table access: */ |
458 |
if (relative_addr >= PVRREG_FOG_TABLE && |
459 |
relative_addr < PVRREG_FOG_TABLE + PVR_FOG_TABLE_SIZE) { |
460 |
if (writeflag == MEM_WRITE) |
461 |
DEFAULT_WRITE; |
462 |
goto return_ok; |
463 |
} |
464 |
|
465 |
switch (relative_addr) { |
466 |
|
467 |
case PVRREG_ID: |
468 |
/* ID for Set 5.xx versions of the Dreamcast, according |
469 |
to http://www.ludd.luth.se/~jlo/dc/powervr-reg.txt: */ |
470 |
odata = 0x17fd11db; |
471 |
break; |
472 |
|
473 |
case PVRREG_REVISION: |
474 |
/* Revision 1.1, for Dreamcast Set 5.2x. */ |
475 |
odata = 0x00000011; |
476 |
break; |
477 |
|
478 |
case PVRREG_RESET: |
479 |
if (writeflag == MEM_WRITE) { |
480 |
if (idata != 0) { |
481 |
debug("[ pvr: RESET "); |
482 |
if (idata & PVR_RESET_PVR) |
483 |
pvr_reset(d); |
484 |
if (idata & PVR_RESET_TA) |
485 |
pvr_reset_ta(d); |
486 |
debug("]\n"); |
487 |
} |
488 |
idata = 0; |
489 |
DEFAULT_WRITE; |
490 |
} |
491 |
break; |
492 |
|
493 |
case PVRREG_STARTRENDER: |
494 |
if (writeflag == MEM_WRITE) { |
495 |
debug("[ pvr: STARTRENDER ]\n"); |
496 |
pvr_render(cpu, d); |
497 |
} else { |
498 |
fatal("[ pvr: huh? read from STARTRENDER ]\n"); |
499 |
} |
500 |
break; |
501 |
|
502 |
case PVRREG_OB_ADDR: |
503 |
if (writeflag == MEM_WRITE) { |
504 |
debug("[ pvr: OB_ADDR set to 0x%08"PRIx32" ]\n", |
505 |
(uint32_t)(idata & PVR_OB_ADDR_MASK)); |
506 |
/* if (idata & ~PVR_OB_ADDR_MASK) { |
507 |
fatal("[ pvr: OB_ADDR: Fatal error: Unknown" |
508 |
" bits set: 0x%08"PRIx32" ]\n", |
509 |
(uint32_t)(idata & ~PVR_OB_ADDR_MASK)); |
510 |
exit(1); |
511 |
} |
512 |
idata &= PVR_OB_ADDR_MASK; |
513 |
*/ |
514 |
DEFAULT_WRITE; |
515 |
} |
516 |
break; |
517 |
|
518 |
case PVRREG_TILEBUF_ADDR: |
519 |
if (writeflag == MEM_WRITE) { |
520 |
debug("[ pvr: TILEBUF_ADDR set to 0x%08"PRIx32" ]\n", |
521 |
(uint32_t)(idata & PVR_TILEBUF_ADDR_MASK)); |
522 |
if (idata & ~PVR_TILEBUF_ADDR_MASK) |
523 |
fatal("[ pvr: TILEBUF_ADDR: WARNING: Unknown" |
524 |
" bits set: 0x%08"PRIx32" ]\n", |
525 |
(uint32_t)(idata & ~PVR_TILEBUF_ADDR_MASK)); |
526 |
idata &= PVR_TILEBUF_ADDR_MASK; |
527 |
DEFAULT_WRITE; |
528 |
} |
529 |
break; |
530 |
|
531 |
case PVRREG_SPANSORT: |
532 |
if (writeflag == MEM_WRITE) { |
533 |
debug("[ pvr: SPANSORT: "); |
534 |
if (idata & PVR_SPANSORT_SPAN0) |
535 |
debug("SPAN0 "); |
536 |
if (idata & PVR_SPANSORT_SPAN1) |
537 |
debug("SPAN1 "); |
538 |
if (idata & PVR_SPANSORT_TSP_CACHE_ENABLE) |
539 |
debug("TSP_CACHE_ENABLE "); |
540 |
debug("]\n"); |
541 |
DEFAULT_WRITE; |
542 |
} |
543 |
break; |
544 |
|
545 |
case PVRREG_BRDCOLR: |
546 |
if (writeflag == MEM_WRITE) { |
547 |
debug("[ pvr: BRDCOLR set to 0x%06"PRIx32" ]\n", |
548 |
(int)idata); |
549 |
DEFAULT_WRITE; |
550 |
d->border_updated = 1; |
551 |
} |
552 |
break; |
553 |
|
554 |
case PVRREG_DIWMODE: |
555 |
if (writeflag == MEM_WRITE) { |
556 |
d->clock_double = idata & DIWMODE_C_MASK? 1:0; |
557 |
d->strip_buffer_enabled = idata & DIWMODE_SE_MASK? 1:0; |
558 |
d->strip_length = (idata & DIWMODE_SL_MASK) |
559 |
>> DIWMODE_SL_SHIFT; |
560 |
d->argb8888_threshold = (idata & DIWMODE_TH_MASK) |
561 |
>> DIWMODE_TH_SHIFT; |
562 |
d->extend = (idata & DIWMODE_EX_MASK) |
563 |
>> DIWMODE_EX_SHIFT; |
564 |
d->pixelmode = (idata & DIWMODE_COL_MASK) |
565 |
>> DIWMODE_COL_SHIFT; |
566 |
d->line_double = idata & DIWMODE_SD_MASK? 1:0; |
567 |
d->display_enabled = idata & DIWMODE_DE_MASK? 1:0; |
568 |
|
569 |
debug("[ pvr: DIWMODE set to: "); |
570 |
debug("clock_double=%i, ", d->clock_double); |
571 |
debug("strip_buffer_enabled=%i, ", |
572 |
d->strip_buffer_enabled); |
573 |
debug("strip_length=%i, ", d->strip_length); |
574 |
debug("argb8888_threshold=%i, ", d->argb8888_threshold); |
575 |
debug("extend=0x%x, ", d->extend); |
576 |
debug("pixelmode="); |
577 |
switch (d->pixelmode) { |
578 |
case 0: debug("RGB0555 (16-bit)"); break; |
579 |
case 1: debug("RGB565 (16-bit)"); break; |
580 |
case 2: debug("RGB888 (24-bit)"); break; |
581 |
case 3: debug("RGB0888 (32-bit)"); break; |
582 |
} |
583 |
debug(", line_double=%i, ", d->line_double); |
584 |
debug("display_enabled=%i", d->display_enabled); |
585 |
debug(" ]\n"); |
586 |
|
587 |
DEFAULT_WRITE; |
588 |
pvr_geometry_updated(d); |
589 |
pvr_fb_invalidate(d, -1, -1); |
590 |
} |
591 |
break; |
592 |
|
593 |
case PVRREG_DIWSIZE: |
594 |
if (writeflag == MEM_WRITE) { |
595 |
debug("[ pvr: DIWSIZE set to modulo=%i, " |
596 |
"width=%i, height=%i ]\n", (int) |
597 |
((idata >> DIWSIZE_MODULO_SHIFT) & DIWSIZE_MASK), |
598 |
(int)((idata >> DIWSIZE_DPL_SHIFT) & DIWSIZE_MASK), |
599 |
(int)((idata >> DIWSIZE_LPF_SHIFT) & DIWSIZE_MASK)); |
600 |
DEFAULT_WRITE; |
601 |
pvr_geometry_updated(d); |
602 |
pvr_fb_invalidate(d, -1, -1); |
603 |
} |
604 |
break; |
605 |
|
606 |
case PVRREG_FB_RENDER_ADDR1: |
607 |
if (writeflag == MEM_WRITE) { |
608 |
debug("[ pvr: FB_RENDER_ADDR1 set to 0x%08"PRIx32 |
609 |
" ]\n", (int) idata); |
610 |
DEFAULT_WRITE; |
611 |
} |
612 |
break; |
613 |
|
614 |
case PVRREG_FB_RENDER_ADDR2: |
615 |
if (writeflag == MEM_WRITE) { |
616 |
debug("[ pvr: FB_RENDER_ADDR2 set to 0x%08"PRIx32 |
617 |
" ]\n", (int) idata); |
618 |
DEFAULT_WRITE; |
619 |
} |
620 |
break; |
621 |
|
622 |
case PVRREG_VRAM_CFG1: |
623 |
if (writeflag == MEM_WRITE) { |
624 |
debug("[ pvr: VRAM_CFG1 set to 0x%08"PRIx32, |
625 |
(int) idata); |
626 |
if (idata != VRAM_CFG1_GOOD_REFRESH_VALUE) |
627 |
fatal("{ VRAM_CFG1 = 0x%08"PRIx32" is not " |
628 |
"yet implemented! }", (int) idata); |
629 |
debug(" ]\n"); |
630 |
DEFAULT_WRITE; |
631 |
} |
632 |
break; |
633 |
|
634 |
case PVRREG_VRAM_CFG2: |
635 |
if (writeflag == MEM_WRITE) { |
636 |
debug("[ pvr: VRAM_CFG2 set to 0x%08"PRIx32, |
637 |
(int) idata); |
638 |
if (idata != VRAM_CFG2_UNKNOWN_MAGIC) |
639 |
fatal("{ VRAM_CFG2 = 0x%08"PRIx32" is not " |
640 |
"yet implemented! }", (int) idata); |
641 |
debug(" ]\n"); |
642 |
DEFAULT_WRITE; |
643 |
} |
644 |
break; |
645 |
|
646 |
case PVRREG_VRAM_CFG3: |
647 |
if (writeflag == MEM_WRITE) { |
648 |
debug("[ pvr: VRAM_CFG3 set to 0x%08"PRIx32, |
649 |
(int) idata); |
650 |
if (idata != VRAM_CFG3_UNKNOWN_MAGIC) |
651 |
fatal("{ VRAM_CFG3 = 0x%08"PRIx32" is not " |
652 |
"yet implemented! }", (int) idata); |
653 |
debug(" ]\n"); |
654 |
DEFAULT_WRITE; |
655 |
} |
656 |
break; |
657 |
|
658 |
case PVRREG_FOG_TABLE_COL: |
659 |
if (writeflag == MEM_WRITE) { |
660 |
debug("[ pvr: FOG_TABLE_COL set to 0x%08"PRIx32" ]\n", |
661 |
(int) idata); |
662 |
DEFAULT_WRITE; |
663 |
} |
664 |
break; |
665 |
|
666 |
case PVRREG_FOG_VERTEX_COL: |
667 |
if (writeflag == MEM_WRITE) { |
668 |
debug("[ pvr: FOG_VERTEX_COL set to 0x%08"PRIx32" ]\n", |
669 |
(int) idata); |
670 |
DEFAULT_WRITE; |
671 |
} |
672 |
break; |
673 |
|
674 |
case PVRREG_FB_RENDER_MODULO: |
675 |
if (writeflag == MEM_WRITE) { |
676 |
debug("[ pvr: PVRREG_FB_RENDER_MODULO set to %i ]\n", |
677 |
(int) idata); |
678 |
/* TODO */ |
679 |
DEFAULT_WRITE; |
680 |
} |
681 |
break; |
682 |
|
683 |
case PVRREG_DIWADDRL: |
684 |
if (writeflag == MEM_WRITE) { |
685 |
debug("[ pvr: DIWADDRL set to 0x%08"PRIx32" ]\n", |
686 |
(int) idata); |
687 |
pvr_fb_invalidate(d, -1, -1); |
688 |
DEFAULT_WRITE; |
689 |
} |
690 |
break; |
691 |
|
692 |
case PVRREG_DIWADDRS: |
693 |
if (writeflag == MEM_WRITE) { |
694 |
debug("[ pvr: DIWADDRS set to 0x%08"PRIx32" ]\n", |
695 |
(int) idata); |
696 |
pvr_fb_invalidate(d, -1, -1); |
697 |
DEFAULT_WRITE; |
698 |
} |
699 |
break; |
700 |
|
701 |
case PVRREG_RASEVTPOS: |
702 |
if (writeflag == MEM_WRITE) { |
703 |
debug("[ pvr: RASEVTPOS pos1=%i pos2=%i ]\n", |
704 |
(int)((idata & RASEVTPOS_POS1_MASK) |
705 |
>> RASEVTPOS_POS1_SHIFT), |
706 |
(int)(idata & RASEVTPOS_POS2_MASK)); |
707 |
DEFAULT_WRITE; |
708 |
} |
709 |
break; |
710 |
|
711 |
case PVRREG_SYNCCONF: |
712 |
if (writeflag == MEM_WRITE) { |
713 |
d->video_enabled = idata & SYNCCONF_VO_MASK? 1:0; |
714 |
d->broadcast_standard = (idata & SYNCCONF_BC_MASK) |
715 |
>> SYNCCONF_BC_SHIFT; |
716 |
d->interlaced = idata & SYNCCONF_I_MASK? 1:0; |
717 |
d->h_sync_positive = idata & SYNCCONF_HP_MASK? 1:0; |
718 |
d->v_sync_positive = idata & SYNCCONF_VP_MASK? 1:0; |
719 |
|
720 |
debug("[ pvr: SYNCCONF set to: "); |
721 |
debug("video_enabled=%i, ", d->video_enabled); |
722 |
switch (d->broadcast_standard) { |
723 |
case SYNCCONF_BC_VGA: debug("VGA"); break; |
724 |
case SYNCCONF_BC_NTSC: debug("NTSC"); break; |
725 |
case SYNCCONF_BC_PAL: debug("PAL"); break; |
726 |
default: debug("*UNKNOWN*"); break; |
727 |
} |
728 |
debug(", interlaced=%i, ", d->interlaced); |
729 |
debug("hsync=%i, ", d->h_sync_positive); |
730 |
debug("vsync=%i ]\n", d->v_sync_positive); |
731 |
|
732 |
DEFAULT_WRITE; |
733 |
pvr_geometry_updated(d); |
734 |
pvr_fb_invalidate(d, -1, -1); |
735 |
} |
736 |
break; |
737 |
|
738 |
case PVRREG_BRDHORZ: |
739 |
if (writeflag == MEM_WRITE) { |
740 |
debug("[ pvr: BRDHORZ start=%i stop=%i ]\n", |
741 |
(int)((idata & BRDHORZ_START_MASK) |
742 |
>> BRDHORZ_START_SHIFT), |
743 |
(int)(idata & BRDHORZ_STOP_MASK)); |
744 |
DEFAULT_WRITE; |
745 |
} |
746 |
break; |
747 |
|
748 |
case PVRREG_SYNCSIZE: |
749 |
if (writeflag == MEM_WRITE) { |
750 |
debug("[ pvr: SYNCSIZE v=%i h=%i ]\n", |
751 |
(int)((idata & SYNCSIZE_V_MASK) |
752 |
>> SYNCSIZE_V_SHIFT), |
753 |
(int)(idata & SYNCSIZE_H_MASK)); |
754 |
DEFAULT_WRITE; |
755 |
} |
756 |
break; |
757 |
|
758 |
case PVRREG_BRDVERT: |
759 |
if (writeflag == MEM_WRITE) { |
760 |
debug("[ pvr: BRDVERT start=%i stop=%i ]\n", |
761 |
(int)((idata & BRDVERT_START_MASK) |
762 |
>> BRDVERT_START_SHIFT), |
763 |
(int)(idata & BRDVERT_STOP_MASK)); |
764 |
DEFAULT_WRITE; |
765 |
} |
766 |
break; |
767 |
|
768 |
case PVRREG_DIWCONF: |
769 |
if (writeflag == MEM_WRITE) { |
770 |
if ((idata & DIWCONF_MAGIC_MASK) != |
771 |
DIWCONF_MAGIC && (idata & DIWCONF_MAGIC_MASK) |
772 |
!= 0) { |
773 |
fatal("PVRREG_DIWCONF magic not set to " |
774 |
"Magic value. 0x%08x\n", (int)idata); |
775 |
exit(1); |
776 |
} |
777 |
if (idata & DIWCONF_BLANK) |
778 |
debug("[ pvr: PVRREG_DIWCONF: BLANK: TODO ]\n"); |
779 |
|
780 |
DEFAULT_WRITE; |
781 |
pvr_geometry_updated(d); |
782 |
} |
783 |
break; |
784 |
|
785 |
case PVRREG_DIWHSTRT: |
786 |
if (writeflag == MEM_WRITE) { |
787 |
debug("[ pvr: DIWHSTRT hpos=%i ]\n", |
788 |
(int)(idata & DIWVSTRT_HPOS_MASK)); |
789 |
DEFAULT_WRITE; |
790 |
} |
791 |
break; |
792 |
|
793 |
case PVRREG_DIWVSTRT: |
794 |
if (writeflag == MEM_WRITE) { |
795 |
debug("[ pvr: DIWVSTRT v2=%i v1=%i ]\n", |
796 |
(int)((idata & DIWVSTRT_V2_MASK) |
797 |
>> DIWVSTRT_V2_SHIFT), |
798 |
(int)(idata & DIWVSTRT_V1_MASK)); |
799 |
DEFAULT_WRITE; |
800 |
} |
801 |
break; |
802 |
|
803 |
case PVRREG_SYNC_STAT: |
804 |
/* TODO. Ugly hack, but it works: */ |
805 |
odata = random(); |
806 |
break; |
807 |
|
808 |
case PVRREG_TA_OPB_START: |
809 |
if (writeflag == MEM_WRITE) { |
810 |
if (idata & ~TA_OPB_START_MASK) { |
811 |
fatal("[ pvr: UNEXPECTED bits in " |
812 |
"TA_OPB_START: 0x%08x ]\n", (int)idata); |
813 |
exit(1); |
814 |
} |
815 |
idata &= TA_OPB_START_MASK; |
816 |
debug("[ pvr: TA_OPB_START set to 0x%x ]\n", |
817 |
(int) idata); |
818 |
DEFAULT_WRITE; |
819 |
} |
820 |
break; |
821 |
|
822 |
case PVRREG_TA_OB_START: |
823 |
if (writeflag == MEM_WRITE) { |
824 |
if (idata & ~TA_OB_START_MASK) { |
825 |
fatal("[ pvr: UNEXPECTED bits in " |
826 |
"TA_OB_START: 0x%08x ]\n", (int)idata); |
827 |
exit(1); |
828 |
} |
829 |
idata &= TA_OB_START_MASK; |
830 |
debug("[ pvr: TA_OB_START set to 0x%x ]\n", |
831 |
(int) idata); |
832 |
DEFAULT_WRITE; |
833 |
} |
834 |
break; |
835 |
|
836 |
case PVRREG_TA_OPB_END: |
837 |
if (writeflag == MEM_WRITE) { |
838 |
idata &= TA_OPB_END_MASK; |
839 |
debug("[ pvr: TA_OPB_END set to 0x%x ]\n", |
840 |
(int) idata); |
841 |
DEFAULT_WRITE; |
842 |
} |
843 |
break; |
844 |
|
845 |
case PVRREG_TA_OB_END: |
846 |
if (writeflag == MEM_WRITE) { |
847 |
idata &= TA_OB_END_MASK; |
848 |
debug("[ pvr: TA_OB_END set to 0x%x ]\n", |
849 |
(int) idata); |
850 |
DEFAULT_WRITE; |
851 |
} |
852 |
break; |
853 |
|
854 |
case PVRREG_TA_OPB_POS: |
855 |
if (writeflag == MEM_WRITE) { |
856 |
idata &= TA_OPB_POS_MASK; |
857 |
debug("[ pvr: TA_OPB_POS set to 0x%x ]\n", |
858 |
(int) idata); |
859 |
DEFAULT_WRITE; |
860 |
} |
861 |
break; |
862 |
|
863 |
case PVRREG_TA_OB_POS: |
864 |
if (writeflag == MEM_WRITE) { |
865 |
idata &= TA_OB_POS_MASK; |
866 |
debug("[ pvr: TA_OB_POS set to 0x%x ]\n", |
867 |
(int) idata); |
868 |
DEFAULT_WRITE; |
869 |
} |
870 |
break; |
871 |
|
872 |
case PVRREG_TILEBUF_SIZE: |
873 |
if (writeflag == MEM_WRITE) { |
874 |
d->tilebuf_ysize = (idata & TILEBUF_SIZE_HEIGHT_MASK) |
875 |
>> TILEBUF_SIZE_HEIGHT_SHIFT; |
876 |
d->tilebuf_xsize = idata & TILEBUF_SIZE_WIDTH_MASK; |
877 |
d->tilebuf_xsize ++; d->tilebuf_ysize ++; |
878 |
debug("[ pvr: TILEBUF_SIZE set to %i x %i ]\n", |
879 |
d->tilebuf_xsize, d->tilebuf_ysize); |
880 |
DEFAULT_WRITE; |
881 |
} |
882 |
break; |
883 |
|
884 |
case PVRREG_TA_INIT: |
885 |
if (writeflag == MEM_WRITE) { |
886 |
debug("[ pvr: TA_INIT ]\n"); |
887 |
|
888 |
if (idata & PVR_TA_INIT) |
889 |
pvr_ta_init(cpu, d); |
890 |
|
891 |
if (idata != PVR_TA_INIT && idata != 0) |
892 |
fatal("{ TA_INIT = 0x%08"PRIx32" is not " |
893 |
"yet implemented! }", (int) idata); |
894 |
|
895 |
/* Always reset to 0. */ |
896 |
idata = 0; |
897 |
DEFAULT_WRITE; |
898 |
} |
899 |
break; |
900 |
|
901 |
default:if (writeflag == MEM_READ) { |
902 |
fatal("[ pvr: read from UNIMPLEMENTED addr 0x%x ]\n", |
903 |
(int)relative_addr); |
904 |
} else { |
905 |
fatal("[ pvr: write to UNIMPLEMENTED addr 0x%x: 0x%x" |
906 |
" ]\n", (int)relative_addr, (int)idata); |
907 |
DEFAULT_WRITE; |
908 |
} |
909 |
} |
910 |
|
911 |
return_ok: |
912 |
if (writeflag == MEM_READ) |
913 |
memory_writemax64(cpu, data, len, odata); |
914 |
|
915 |
return 1; |
916 |
} |
917 |
|
918 |
|
919 |
static void extend_update_region(struct pvr_data *d, uint64_t low, |
920 |
uint64_t high) |
921 |
{ |
922 |
int vram_ofs = REG(PVRREG_DIWADDRL); |
923 |
int bytes_per_line = d->xsize * d->bytes_per_pixel; |
924 |
|
925 |
low -= vram_ofs; |
926 |
high -= vram_ofs; |
927 |
|
928 |
/* Access inside visible part of VRAM? */ |
929 |
if ((int64_t)high >= 0 && (int64_t)low < |
930 |
bytes_per_line * d->ysize) { |
931 |
int new_y1, new_y2; |
932 |
|
933 |
d->fb_update_x1 = 0; |
934 |
d->fb_update_x2 = d->xsize - 1; |
935 |
|
936 |
/* Calculate which line the low and high addresses |
937 |
correspond to: */ |
938 |
new_y1 = low / bytes_per_line; |
939 |
new_y2 = high / bytes_per_line + 1; |
940 |
|
941 |
if (d->fb_update_y1 < 0 || new_y1 < d->fb_update_y1) |
942 |
d->fb_update_y1 = new_y1; |
943 |
if (d->fb_update_y2 < 0 || new_y2 > d->fb_update_y2) |
944 |
d->fb_update_y2 = new_y2; |
945 |
|
946 |
if (d->fb_update_y2 >= d->ysize) |
947 |
d->fb_update_y2 = d->ysize - 1; |
948 |
} |
949 |
} |
950 |
|
951 |
|
952 |
DEVICE_TICK(pvr_fb) |
953 |
{ |
954 |
struct pvr_data *d = extra; |
955 |
uint64_t high, low = (uint64_t)(int64_t) -1; |
956 |
int vram_ofs = REG(PVRREG_DIWADDRL), pixels_to_copy; |
957 |
int y, bytes_per_line = d->xsize * d->bytes_per_pixel; |
958 |
int fb_ofs, p; |
959 |
uint8_t *fb = (uint8_t *) d->fb->framebuffer; |
960 |
uint8_t *vram = (uint8_t *) d->vram; |
961 |
|
962 |
|
963 |
/* |
964 |
* Vertical retrace interrupts: |
965 |
* |
966 |
* TODO: Maybe it would be even more realistic to have the timer run |
967 |
* at, say, 60*4 = 240 Hz, and have the following events: |
968 |
* |
969 |
* (tick & 3) == 0 SYSASIC_EVENT_VBLINT |
970 |
* (tick & 3) == 1 SYSASIC_EVENT_PVR_SCANINT1 |
971 |
* (tick & 3) == 2 nothing |
972 |
* (tick & 3) == 3 SYSASIC_EVENT_PVR_SCANINT2 |
973 |
*/ |
974 |
|
975 |
if (d->vblank_interrupts_pending > 0) { |
976 |
SYSASIC_TRIGGER_EVENT(SYSASIC_EVENT_VBLINT); |
977 |
SYSASIC_TRIGGER_EVENT(SYSASIC_EVENT_PVR_SCANINT1); |
978 |
SYSASIC_TRIGGER_EVENT(SYSASIC_EVENT_PVR_SCANINT2); |
979 |
|
980 |
/* TODO: For now, I don't care about missed interrupts: */ |
981 |
d->vblank_interrupts_pending = 0; |
982 |
} |
983 |
|
984 |
|
985 |
/* |
986 |
* Framebuffer update: |
987 |
*/ |
988 |
|
989 |
/* Border changed? */ |
990 |
if (d->border_updated) { |
991 |
/* Fill border with border color: */ |
992 |
int rgb = REG(PVRREG_BRDCOLR), addr = 0; |
993 |
int x, y, b = rgb & 0xff, g = (rgb >> 8) & 0xff, r = rgb >> 16; |
994 |
int skiplen = (d->fb->xsize-2*PVR_MARGIN) * d->fb->bit_depth/8; |
995 |
|
996 |
for (y=0; y<d->fb->ysize; y++) { |
997 |
int xskip = y < PVR_MARGIN || y >= |
998 |
d->fb->ysize - PVR_MARGIN? -1 : PVR_MARGIN; |
999 |
for (x=0; x<d->fb->xsize; x++) { |
1000 |
if (x == xskip) { |
1001 |
x = d->fb->xsize - PVR_MARGIN; |
1002 |
addr += skiplen; |
1003 |
} |
1004 |
fb[addr] = r; |
1005 |
fb[addr+1] = g; |
1006 |
fb[addr+2] = b; |
1007 |
addr += 3; |
1008 |
} |
1009 |
} |
1010 |
|
1011 |
/* Full redraw of the framebuffer: */ |
1012 |
d->fb->update_x1 = 0; d->fb->update_x2 = d->fb->xsize - 1; |
1013 |
d->fb->update_y1 = 0; d->fb->update_y2 = d->fb->ysize - 1; |
1014 |
} |
1015 |
|
1016 |
memory_device_dyntrans_access(cpu, cpu->mem, extra, &low, &high); |
1017 |
if ((int64_t)low != -1) |
1018 |
extend_update_region(d, low, high); |
1019 |
|
1020 |
if (d->fb_update_x1 == -1) |
1021 |
return; |
1022 |
|
1023 |
/* Copy (part of) the VRAM to the framebuffer: */ |
1024 |
if (d->fb_update_x2 >= d->xsize) |
1025 |
d->fb_update_x2 = d->xsize - 1; |
1026 |
if (d->fb_update_y2 >= d->ysize) |
1027 |
d->fb_update_y2 = d->ysize - 1; |
1028 |
|
1029 |
vram_ofs += d->fb_update_y1 * bytes_per_line; |
1030 |
vram_ofs += d->fb_update_x1 * d->bytes_per_pixel; |
1031 |
pixels_to_copy = (d->fb_update_x2 - d->fb_update_x1 + 1); |
1032 |
fb_ofs = (d->fb_update_y1 + PVR_MARGIN) * d->fb->bytes_per_line; |
1033 |
fb_ofs += (d->fb_update_x1 + PVR_MARGIN) * d->fb->bit_depth / 8; |
1034 |
|
1035 |
/* Copy the actual pixels: (Four manually inlined, for speed.) */ |
1036 |
|
1037 |
switch (d->pixelmode) { |
1038 |
case 0: /* RGB0555 (16-bit) */ |
1039 |
for (y=d->fb_update_y1; y<=d->fb_update_y2; y++) { |
1040 |
int fo = fb_ofs, vo = vram_ofs; |
1041 |
for (p=0; p<pixels_to_copy; p++) { |
1042 |
/* 0rrrrrgg(high) gggbbbbb(low) */ |
1043 |
fb[fo] = (vram[vo+1] << 1) & 0xf8; |
1044 |
fb[fo+1] = ((vram[vo] >> 2) & 0x38) + |
1045 |
(vram[vo+1] << 6); |
1046 |
fb[fo+2] = (vram[vo] & 0x1f) << 3; |
1047 |
fo += 3; vo += 2; |
1048 |
} |
1049 |
vram_ofs += bytes_per_line; |
1050 |
fb_ofs += d->fb->bytes_per_line; |
1051 |
} |
1052 |
break; |
1053 |
|
1054 |
case 1: /* RGB565 (16-bit) */ |
1055 |
for (y=d->fb_update_y1; y<=d->fb_update_y2; y++) { |
1056 |
int fo = fb_ofs, vo = vram_ofs; |
1057 |
for (p=0; p<pixels_to_copy; p++) { |
1058 |
/* rrrrrggg(high) gggbbbbb(low) */ |
1059 |
fb[fo] = vram[vo+1] & 0xf8; |
1060 |
fb[fo+1] = ((vram[vo] >> 3) & 0x1c) + |
1061 |
(vram[vo+1] << 5); |
1062 |
fb[fo+2] = (vram[vo] & 0x1f) << 3; |
1063 |
fo += 3; vo += 2; |
1064 |
} |
1065 |
vram_ofs += bytes_per_line; |
1066 |
fb_ofs += d->fb->bytes_per_line; |
1067 |
} |
1068 |
break; |
1069 |
|
1070 |
case 2: /* RGB888 (24-bit) */ |
1071 |
for (y=d->fb_update_y1; y<=d->fb_update_y2; y++) { |
1072 |
/* TODO: Reverse colors, like in the 32-bit case? */ |
1073 |
memcpy(fb+fb_ofs, vram+vram_ofs, 3*pixels_to_copy); |
1074 |
vram_ofs += bytes_per_line; |
1075 |
fb_ofs += d->fb->bytes_per_line; |
1076 |
} |
1077 |
break; |
1078 |
|
1079 |
case 3: /* RGB0888 (32-bit) */ |
1080 |
for (y=d->fb_update_y1; y<=d->fb_update_y2; y++) { |
1081 |
int fo = fb_ofs, vo = vram_ofs; |
1082 |
for (p=0; p<pixels_to_copy; p++) { |
1083 |
fb[fo] = vram[vo+2]; |
1084 |
fb[fo+1] = vram[vo+1]; |
1085 |
fb[fo+2] = vram[vo+0]; |
1086 |
fo += 3; vo += 4; |
1087 |
} |
1088 |
vram_ofs += bytes_per_line; |
1089 |
fb_ofs += d->fb->bytes_per_line; |
1090 |
} |
1091 |
break; |
1092 |
} |
1093 |
|
1094 |
/* |
1095 |
* Extend the real framebuffer to encompass the area |
1096 |
* just written to: |
1097 |
*/ |
1098 |
|
1099 |
/* Offset to take the margin into account first... */ |
1100 |
d->fb_update_x1 += PVR_MARGIN; d->fb_update_y1 += PVR_MARGIN; |
1101 |
d->fb_update_x2 += PVR_MARGIN; d->fb_update_y2 += PVR_MARGIN; |
1102 |
|
1103 |
if (d->fb_update_x1 < d->fb->update_x1 || d->fb->update_x1 < 0) |
1104 |
d->fb->update_x1 = d->fb_update_x1; |
1105 |
if (d->fb_update_x2 > d->fb->update_x2 || d->fb->update_x2 < 0) |
1106 |
d->fb->update_x2 = d->fb_update_x2; |
1107 |
if (d->fb_update_y1 < d->fb->update_y1 || d->fb->update_y1 < 0) |
1108 |
d->fb->update_y1 = d->fb_update_y1; |
1109 |
if (d->fb_update_y2 > d->fb->update_y2 || d->fb->update_y2 < 0) |
1110 |
d->fb->update_y2 = d->fb_update_y2; |
1111 |
|
1112 |
/* Clear the PVR's update region: */ |
1113 |
d->fb_update_x1 = d->fb_update_x2 = |
1114 |
d->fb_update_y1 = d->fb_update_y2 = -1; |
1115 |
} |
1116 |
|
1117 |
|
1118 |
DEVICE_ACCESS(pvr_vram_alt) |
1119 |
{ |
1120 |
struct pvr_data_alt *d_alt = extra; |
1121 |
struct pvr_data *d = d_alt->d; |
1122 |
int i; |
1123 |
|
1124 |
if (writeflag == MEM_READ) { |
1125 |
/* Copy from real vram: */ |
1126 |
for (i=0; i<len; i++) { |
1127 |
int addr = relative_addr + i; |
1128 |
addr = ((addr & 4) << 20) | (addr & 3) |
1129 |
| ((addr & 0x7ffff8) >> 1); |
1130 |
data[i] = d->vram[addr]; |
1131 |
} |
1132 |
return 1; |
1133 |
} |
1134 |
|
1135 |
/* |
1136 |
* Convert writes to alternative VRAM, into normal writes: |
1137 |
*/ |
1138 |
|
1139 |
for (i=0; i<len; i++) { |
1140 |
int addr = relative_addr + i; |
1141 |
addr = ((addr & 4) << 20) | (addr & 3) |
1142 |
| ((addr & 0x7ffff8) >> 1); |
1143 |
d->vram[addr] = data[i]; |
1144 |
} |
1145 |
|
1146 |
return 1; |
1147 |
} |
1148 |
|
1149 |
|
1150 |
DEVICE_ACCESS(pvr_vram) |
1151 |
{ |
1152 |
struct pvr_data *d = extra; |
1153 |
|
1154 |
if (writeflag == MEM_READ) { |
1155 |
memcpy(data, d->vram + relative_addr, len); |
1156 |
return 1; |
1157 |
} |
1158 |
|
1159 |
/* |
1160 |
* Write to VRAM: |
1161 |
* |
1162 |
* Calculate which part of the framebuffer this write corresponds to, |
1163 |
* if any, and increase the update region to encompass the written |
1164 |
* memory range. |
1165 |
*/ |
1166 |
|
1167 |
memcpy(d->vram + relative_addr, data, len); |
1168 |
extend_update_region(d, relative_addr, relative_addr + len - 1); |
1169 |
|
1170 |
return 1; |
1171 |
} |
1172 |
|
1173 |
|
1174 |
DEVINIT(pvr) |
1175 |
{ |
1176 |
struct machine *machine = devinit->machine; |
1177 |
struct pvr_data *d = malloc(sizeof(struct pvr_data)); |
1178 |
struct pvr_data_alt *d_alt = malloc(sizeof(struct pvr_data_alt)); |
1179 |
if (d == NULL) { |
1180 |
fprintf(stderr, "out of memory\n"); |
1181 |
exit(1); |
1182 |
} |
1183 |
memset(d, 0, sizeof(struct pvr_data)); |
1184 |
memset(d_alt, 0, sizeof(struct pvr_data_alt)); |
1185 |
|
1186 |
d_alt->d = d; |
1187 |
|
1188 |
memory_device_register(machine->memory, devinit->name, |
1189 |
PVRREG_REGSTART, PVRREG_REGSIZE, dev_pvr_access, d, |
1190 |
DM_DEFAULT, NULL); |
1191 |
|
1192 |
/* 8 MB video RAM: */ |
1193 |
d->vram = zeroed_alloc(8 * 1048576); |
1194 |
memory_device_register(machine->memory, "pvr_vram", 0x05000000, |
1195 |
8 * 1048576, dev_pvr_vram_access, (void *)d, |
1196 |
DM_DYNTRANS_OK | DM_DYNTRANS_WRITE_OK |
1197 |
| DM_READS_HAVE_NO_SIDE_EFFECTS, d->vram); |
1198 |
|
1199 |
/* 8 MB video RAM, when accessed at 0xa4000000: */ |
1200 |
d->vram_alt = zeroed_alloc(8 * 1048576); |
1201 |
memory_device_register(machine->memory, "pvr_alt_vram", 0x04000000, |
1202 |
8 * 1048576, dev_pvr_vram_alt_access, (void *)d_alt, |
1203 |
DM_DEFAULT, NULL); |
1204 |
|
1205 |
memory_device_register(machine->memory, "pvr_ta", |
1206 |
0x10000000, sizeof(d->ta), dev_pvr_ta_access, d, DM_DEFAULT, NULL); |
1207 |
|
1208 |
d->xsize = 640; |
1209 |
d->ysize = 480; |
1210 |
d->pixelmode = 1; /* RGB565 */ |
1211 |
d->bytes_per_pixel = 2; |
1212 |
|
1213 |
d->fb = dev_fb_init(machine, machine->memory, INTERNAL_FB_ADDR, |
1214 |
VFB_GENERIC, d->xsize + PVR_MARGIN*2, d->ysize + PVR_MARGIN*2, |
1215 |
d->xsize + PVR_MARGIN*2, d->ysize + PVR_MARGIN*2, |
1216 |
24, "Dreamcast PVR"); |
1217 |
|
1218 |
d->vblank_timer = timer_add(PVR_VBLANK_HZ, pvr_vblank_timer_tick, d); |
1219 |
|
1220 |
pvr_reset(d); |
1221 |
pvr_reset_ta(d); |
1222 |
|
1223 |
machine_add_tickfunction(machine, dev_pvr_fb_tick, d, |
1224 |
PVR_FB_TICK_SHIFT, 0.0); |
1225 |
|
1226 |
return 1; |
1227 |
} |
1228 |
|