X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=pico%2Fcarthw%2Fsvp%2Fsvp.c;h=8861de04d1164b4c2fe88f89f6f7c1b16c3945f3;hb=0c7d1ba332b26f4ac67199e8ecbb826651f8512a;hp=17d4aeafdeddcdd83f40f814ac87e55da2f6d306;hpb=27701801c1b106f347ae81862f2426daf2e76fd8;p=picodrive.git diff --git a/pico/carthw/svp/svp.c b/pico/carthw/svp/svp.c index 17d4aea..8861de0 100644 --- a/pico/carthw/svp/svp.c +++ b/pico/carthw/svp/svp.c @@ -1,16 +1,34 @@ -// The SVP chip emulator - -// (c) Copyright 2008, Grazvydas "notaz" Ignotas -// Free for non-commercial use. - -// For commercial use, separate licencing terms must be obtained. - - -#include "../../pico_int.h" +/* + * The SVP chip emulator + * + * Copyright (c) Gražvydas "notaz" Ignotas, 2008 + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * * Neither the name of the organization nor the + * names of its contributors may be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR + * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER + * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, + * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include +#include #include "compiler.h" -#if defined(__linux__) && defined(ARM) -#include -#endif svp_t *svp = NULL; int PicoSVPCycles = 850; // cycles/line, just a guess @@ -38,8 +56,8 @@ static void PicoSVPReset(void) memcpy(svp->iram_rom + 0x800, Pico.rom + 0x800, 0x20000 - 0x800); ssp1601_reset(&svp->ssp1601); -#ifndef PSP - if ((PicoOpt&POPT_EN_SVP_DRC) && svp_dyn_ready) +#ifdef _SVP_DRC + if ((PicoOpt & POPT_EN_DRC) && svp_dyn_ready) ssp1601_dyn_reset(&svp->ssp1601); #endif } @@ -48,7 +66,7 @@ static void PicoSVPReset(void) static void PicoSVPLine(void) { int count = 1; -#if defined(ARM) || defined(PSP) +#if defined(__arm__) || defined(PSP) // performance hack static int delay_lines = 0; delay_lines++; @@ -58,8 +76,8 @@ static void PicoSVPLine(void) delay_lines = 0; #endif -#ifndef PSP - if ((PicoOpt&POPT_EN_SVP_DRC) && svp_dyn_ready) +#ifdef _SVP_DRC + if ((PicoOpt & POPT_EN_DRC) && svp_dyn_ready) ssp1601_dyn_run(PicoSVPCycles * count); else #endif @@ -73,23 +91,20 @@ static void PicoSVPLine(void) } -static int PicoSVPDma(unsigned int source, int len, unsigned short **srcp, unsigned short **limitp) +static int PicoSVPDma(unsigned int source, int len, unsigned short **base, unsigned int *mask) { if (source < Pico.romsize) // Rom { - source -= 2; - *srcp = (unsigned short *)(Pico.rom + (source&~1)); - *limitp = (unsigned short *)(Pico.rom + Pico.romsize); - return 1; + *base = (unsigned short *)(Pico.rom + (source & 0xfe0000)); + *mask = 0x1ffff; + return source - 2; } else if ((source & 0xfe0000) == 0x300000) { elprintf(EL_VDPDMA|EL_SVP, "SVP DmaSlow from %06x, len=%i", source, len); - source &= 0x1fffe; - source -= 2; - *srcp = (unsigned short *)(svp->dram + source); - *limitp = (unsigned short *)(svp->dram + sizeof(svp->dram)); - return 1; + *base = (unsigned short *)svp->dram; + *mask = 0x1ffff; + return source - 2; } else elprintf(EL_VDPDMA|EL_SVP|EL_ANOMALY, "SVP FIXME unhandled DmaSlow from %06x, len=%i", source, len); @@ -100,63 +115,52 @@ static int PicoSVPDma(unsigned int source, int len, unsigned short **srcp, unsig void PicoSVPInit(void) { -#if defined(__linux__) && defined(ARM) - int ret; - ret = munmap(tcache, SSP_DRC_SIZE); - printf("munmap tcache: %i\n", ret); +#ifdef _SVP_DRC + // this is to unmap tcache and make + // mem available for large ROMs, MCD, etc. + drc_cmn_cleanup(); #endif } - -static void PicoSVPShutdown(void) +static void PicoSVPExit(void) { -#if defined(__linux__) && defined(ARM) - // also unmap tcache - PicoSVPInit(); +#ifdef _SVP_DRC + ssp1601_dyn_exit(); #endif } void PicoSVPStartup(void) { - void *tmp; + int ret; - elprintf(EL_SVP, "SVP init"); + elprintf(EL_STATUS, "SVP startup"); - tmp = realloc(Pico.rom, 0x200000 + sizeof(*svp)); - if (tmp == NULL) - { + ret = PicoCartResize(Pico.romsize + sizeof(*svp)); + if (ret != 0) { elprintf(EL_STATUS|EL_SVP, "OOM for SVP data"); return; } - //PicoOpt &= ~0x20000; - Pico.rom = tmp; - svp = (void *) ((char *)tmp + 0x200000); + svp = (void *) ((char *)Pico.rom + Pico.romsize); memset(svp, 0, sizeof(*svp)); -#if defined(__linux__) && defined(ARM) - tmp = mmap(tcache, SSP_DRC_SIZE, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_SHARED|MAP_ANONYMOUS, -1, 0); - printf("mmap tcache: %p, asked %p\n", tmp, tcache); -#endif - // init SVP compiler svp_dyn_ready = 0; -#ifndef PSP - if (PicoOpt&POPT_EN_SVP_DRC) { - if (ssp1601_dyn_startup()) return; +#ifdef _SVP_DRC + if (PicoOpt & POPT_EN_DRC) { + if (ssp1601_dyn_startup()) + return; svp_dyn_ready = 1; } #endif // init ok, setup hooks.. - PicoRead16Hook = PicoSVPRead16; - PicoWrite8Hook = PicoSVPWrite8; - PicoWrite16Hook = PicoSVPWrite16; + PicoCartMemSetup = PicoSVPMemSetup; PicoDmaHook = PicoSVPDma; PicoResetHook = PicoSVPReset; PicoLineHook = PicoSVPLine; - PicoCartUnloadHook = PicoSVPShutdown; + PicoCartUnloadHook = PicoSVPExit; // save state stuff svp_states[0].ptr = svp->iram_rom; @@ -166,4 +170,3 @@ void PicoSVPStartup(void) PicoAHW |= PAHW_SVP; } -