X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?p=ginge.git;a=blobdiff_plain;f=loader%2Femu.c;h=993ed559625285975883e43461b5bec0a99eefb7;hp=7e3ca5e5a5ce47e6cefbe2441692428a4b94e8a0;hb=6ca083930098ee075c8f61cf2c04d616349959c3;hpb=86418a845b35b2bb08b611fa1a1d1eec05b924c9 diff --git a/loader/emu.c b/loader/emu.c index 7e3ca5e..993ed55 100644 --- a/loader/emu.c +++ b/loader/emu.c @@ -1,6 +1,8 @@ // vim:shiftwidth=2:expandtab #include #include +#include +#include #include #include #include @@ -9,101 +11,577 @@ #include #include #include +#include +#include +#include +#include +#include +#include +#include #include "header.h" +#include "../common/host_fb.h" +#include "../common/cmn.h" #include "sys_cacheflush.h" +#include "realfuncs.h" -//#define iolog printf +#if (DBG & 2) && !(DBG & 4) +#define LOG_IO_UNK +#endif +#if (DBG & 4) +#define LOG_IO +#endif +//#define LOG_SEGV + +#ifdef LOG_IO +#define iolog log_io +#else #define iolog(...) +#endif + +#ifdef LOG_IO_UNK +#define iolog_unh log_io +#else +#define iolog_unh(...) +#endif + +#ifdef LOG_SEGV +#define segvlog printf +#else +#define segvlog(...) +#endif +#if defined(LOG_IO) || defined(LOG_IO_UNK) +#include "mmsp2-regs.h" +#endif + +typedef unsigned long long u64; typedef unsigned int u32; typedef unsigned short u16; typedef unsigned char u8; -static int memdev; -static volatile u16 *memregs, *blitter; +static pthread_mutex_t fb_mutex = PTHREAD_MUTEX_INITIALIZER; +static pthread_cond_t fb_cond = PTHREAD_COND_INITIALIZER; + +static struct { + u32 dstctrl; + u32 dstaddr; + u32 dststride; + u32 srcctrl; + u32 srcaddr; // + u32 srcstride; + u32 srcforcolor; + u32 srcbackcolor; + u32 patctrl; // + u32 patforcolor; + u32 patbackcolor; + u32 size; + u32 ctrl; // + u32 run; + u32 intc; + u32 srcfifo; +} blitter; + +#define SRCCTRL_INVIDEO (1 << 8) +#define SRCCTRL_SRCENB (1 << 7) +#define CTRL_TRANSPARENCYENB (1 << 11) + +static struct { + u16 mlc_stl_cntl; + union { + u32 mlc_stl_adr; + struct { + u16 mlc_stl_adrl; + u16 mlc_stl_adrh; + }; + }; + u16 mlc_stl_pallt_a; + union { + u16 mlc_stl_pallt_d[256*2]; + u32 mlc_stl_pallt_d32[256]; + }; + + // state + void *umem; + u32 old_mlc_stl_adr; + u32 btn_state; // as seen through /dev/GPIO + u32 dirty_pal:1; +} mmsp2; -static volatile void *translate_addr(u32 a, u32 *mask) +#if defined(LOG_IO) || defined(LOG_IO_UNK) +static void log_io(const char *pfx, u32 a, u32 d, int size) { - if ((a & 0xfff00000) == 0x7f000000) { - *mask = 0xffff; - return memregs; + const char *fmt, *reg = ""; + switch (size) { + case 8: fmt = "%s %08x %02x %s\n"; d &= 0xff; break; + case 32: fmt = "%s %08x %08x %s\n"; break; + default: fmt = "%s %08x %04x %s\n"; d &= 0xffff; break; } - if ((a & 0xfff00000) == 0x7f100000) { - *mask = 0xff; - return blitter; + + if ((a & ~0xffff) == 0x7f000000) + reg = regnames[a & 0xffff]; + + printf(fmt, pfx, a, d, reg); +} +#endif + +static void memset16(void *dst, u32 pattern, int count) +{ + u32 *dl; + u16 *d; + + d = (u16 *)((long)dst & ~1); + if ((long)d & 2) { + *d++ = pattern; + count--; + } + dl = (void *)d; + pattern |= pattern << 16; + + while (count >= 2) { + *dl++ = pattern; + count -= 2; } - fprintf(stderr, "bad IO @ %08x\n", a); - abort(); + if (count) + *(u16 *)dl = pattern; } -static u32 xread8(u32 a) +static void blt_tr(void *dst, void *src, u32 trc, int w) +{ + u16 *d = (u16 *)((long)dst & ~1); + u16 *s = (u16 *)((long)src & ~1); + + // XXX: optimize + for (; w > 0; d++, s++, w--) + if (*s != trc) + *d = *s; +} + +#define dump_blitter() \ +{ \ + u32 *r = &blitter.dstctrl; \ + int i; \ + for (i = 0; i < 4*4; i++, r++) { \ + printf("%08x ", *r); \ + if ((i & 3) == 3) \ + printf("\n"); \ + } \ +} + +static void *uppermem_lookup(u32 addr, u8 **mem_end) +{ + // XXX: maybe support mirroring? + if ((addr & 0xfe000000) != 0x02000000) + return NULL; + + *mem_end = (u8 *)mmsp2.umem + 0x02000000; + return (u8 *)mmsp2.umem - 0x02000000 + addr; +} + +static void blitter_do(void) +{ + u8 *dst, *dste, *src = NULL, *srce = NULL; + int w, h, sstrd, dstrd; + int to_screen = 0; + u32 bpp, addr; + + w = blitter.size & 0x7ff; + h = (blitter.size >> 16) & 0x7ff; + sstrd = blitter.srcstride; + dstrd = blitter.dststride; + + // XXX: need to confirm this.. + addr = (blitter.dstaddr & ~3) | ((blitter.dstctrl & 0x1f) >> 3); + + // use dst bpp.. How does it do blits with different src bpp? + bpp = (blitter.dstctrl & 0x20) ? 16 : 8; + + // maybe the screen? + if (((w == 320 && h == 240) || // blit whole screen + (w * h >= 320*240/2)) && // ..or at least half of the area + mmsp2.mlc_stl_adr <= addr && addr < mmsp2.mlc_stl_adr + 320*240*2) + to_screen = 1; + + dst = uppermem_lookup(addr, &dste); + + // XXX: assume fill if no SRCENB, but it could be pattern blit.. + if (blitter.srcctrl & SRCCTRL_SRCENB) { + if (!(blitter.srcctrl & SRCCTRL_INVIDEO)) + goto bad_blit; + + addr = (blitter.srcaddr & ~3) | ((blitter.srcctrl & 0x1f) >> 3); + src = uppermem_lookup(addr, &srce); + if (src == NULL) + goto bad_blit; + + if (src + sstrd * h > srce) { + err("blit %08x->%08x %dx%d did not fit src\n", + blitter.srcaddr, blitter.dstaddr, w, h); + h = (srce - src) / sstrd; + } + } + + if (dst == NULL) + goto bad_blit; + + if (dst + dstrd * h > dste) { + err("blit %08x->%08x %dx%d did not fit dst\n", + blitter.srcaddr, blitter.dstaddr, w, h); + h = (dste - dst) / dstrd; + } + + if (src != NULL) { + // copy + if (bpp == 16 && (blitter.ctrl & CTRL_TRANSPARENCYENB)) { + u32 trc = blitter.ctrl >> 16; + for (; h > 0; h--, dst += dstrd, src += sstrd) + blt_tr(dst, src, trc, w); + } + else { + for (; h > 0; h--, dst += dstrd, src += sstrd) + memcpy(dst, src, w * bpp / 8); + } + } + else { + // fill. Assume the pattern is cleared and bg color is used + u32 bgc = blitter.patbackcolor & 0xffff; + if (bpp == 16) { + for (; h > 0; h--, dst += dstrd) + memset16(dst, bgc, w); + } + else { + for (; h > 0; h--, dst += dstrd) + memset(dst, bgc, w); // bgc? + } + } + + if (to_screen) + pthread_cond_signal(&fb_cond); + return; + +bad_blit: + err("blit %08x->%08x %dx%d translated to %p->%p\n", + blitter.srcaddr, blitter.dstaddr, w, h, src, dst); + dump_blitter(); +} + +// FIXME: pass real dimensions to blitters +static void mlc_flip(void *src, int bpp) { - volatile u8 *mem; - u32 mask; + static int old_bpp; + + // only pass pal to host if it's dirty + if (bpp <= 8 && mmsp2.dirty_pal) { + host_video_update_pal(mmsp2.mlc_stl_pallt_d32); + mmsp2.dirty_pal = 0; + } + + if (bpp != old_bpp) { + host_video_change_bpp(bpp); + old_bpp = bpp; + } + + switch (bpp) { + case 4: + host_video_blit4(src, 320, 240); + break; + + case 8: + host_video_blit8(src, 320, 240); + break; + + case 16: + host_video_blit16(src, 320, 240); + break; + + case 24: + // TODO + break; + } +} - iolog("r8 %08x\n", a); - mem = translate_addr(a, &mask); - return mem[a & mask]; +#define ts_add_nsec(ts, ns) { \ + ts.tv_nsec += ns; \ + if (ts.tv_nsec >= 1000000000) { \ + ts.tv_sec++; \ + ts.tv_nsec -= 1000000000; \ + } \ +} + +static void *fb_sync_thread(void *arg) +{ + int invalid_fb_addr = 1; + int manual_refresh = 0; + struct timespec ts; + int ret, wait_ret; + + //ret = pthread_setschedprio(pthread_self(), -1); + //log("pthread_setschedprio %d\n", ret); + //ret = setpriority(PRIO_PROCESS, 0, -1); + //log("setpriority %d\n", ret); + + ret = clock_gettime(CLOCK_REALTIME, &ts); + if (ret != 0) { + perror(PFX "clock_gettime"); + exit(1); + } + + while (1) { + u8 *gp2x_fb, *gp2x_fb_end; + int mode, bpp; + + ret = pthread_mutex_lock(&fb_mutex); + wait_ret = pthread_cond_timedwait(&fb_cond, &fb_mutex, &ts); + ret |= pthread_mutex_unlock(&fb_mutex); + + if (ret != 0) { + err("fb_thread: mutex error: %d\n", ret); + sleep(1); + continue; + } + if (wait_ret != 0 && wait_ret != ETIMEDOUT) { + err("fb_thread: cond error: %d\n", wait_ret); + sleep(1); + continue; + } + + if (wait_ret != ETIMEDOUT) { + clock_gettime(CLOCK_REALTIME, &ts); + ts_add_nsec(ts, 50000000); + manual_refresh++; + if (manual_refresh == 2) + dbg("fb_thread: switch to manual refresh\n"); + } else { + ts_add_nsec(ts, 16666667); + if (manual_refresh > 1) + dbg("fb_thread: switch to auto refresh\n"); + manual_refresh = 0; + } + + mode = (mmsp2.mlc_stl_cntl >> 9) & 3; + bpp = mode ? mode * 8 : 4; + + gp2x_fb = uppermem_lookup(mmsp2.mlc_stl_adr, &gp2x_fb_end); + if (gp2x_fb == NULL || gp2x_fb + 320*240 * bpp / 8 > gp2x_fb_end) { + if (!invalid_fb_addr) { + err("fb_thread: %08x is out of range\n", mmsp2.mlc_stl_adr); + invalid_fb_addr = 1; + } + continue; + } + + mlc_flip(gp2x_fb, bpp); + } +} + +static u32 xread8(u32 a) +{ + iolog("r8 ", a, 0, 8); + iolog_unh("r8 ", a, 0, 8); + return 0; } static u32 xread16(u32 a) { - volatile u16 *mem; - u32 mask; + static u32 fudge, old_a; + u32 d = 0, t; + + if ((a & 0xffff0000) == 0x7f000000) { + u32 a_ = a & 0xffff; + switch (a_) { + case 0x0910: // FPLL + case 0x0912: + d = 0x9407; + break; + // minilib reads as: + // 0000 P000 VuVd00 0000 YXBA RLSeSt 0R0D 0L0U + // | GPIOD |GPIOC[8:15]|GPIOM[0:7]| + // /dev/GPIO: + // ... 0PVdVu ... + case 0x1184: // GPIOC + d = ~mmsp2.btn_state & 0xff00; + d |= 0x00ff; + break; + case 0x1186: // GPIOD + t = ~mmsp2.btn_state; + d = (t >> 9) & 0x0080; + d |= (t >> 11) & 0x0040; + d |= (t >> 7) & 0x0800; + d |= 0x373b; + break; + case 0x1198: // GPIOM + mmsp2.btn_state = host_read_btns(); + d = ~mmsp2.btn_state & 0xff; + d |= 0x01aa; + break; + case 0x1836: // reserved + d = 0x2330; + break; + case 0x2816: // DPC_X_MAX + d = 319; + break; + case 0x2818: // DPC_Y_MAX + d = 239; + break; + case 0x28da: + d = mmsp2.mlc_stl_cntl; + break; + case 0x290e: + case 0x2912: + d = mmsp2.mlc_stl_adrl; + break; + case 0x2910: + case 0x2914: + d = mmsp2.mlc_stl_adrh; + break; + case 0x2958: + d = mmsp2.mlc_stl_pallt_a; + break; + default: + goto unh; + } + goto out; + } + +unh: + if (a == old_a) { + d = fudge; + fudge = ~fudge; + } + old_a = a; + iolog_unh("r16", a, d & 0xffff, 16); - //if ((a & 0xfff00000) == 0x7f100000) { static int a; a ^= ~1; return a & 0xffff; } - iolog("r16 %08x\n", a); - mem = translate_addr(a, &mask); - return mem[(a & mask) / 2]; +out: + d &= 0xffff; + iolog("r16", a, d, 16); + return d; } static u32 xread32(u32 a) { - volatile u32 *mem; - u32 mask; + u32 d = 0; + if ((a & 0xfff00000) == 0x7f000000) { + u32 a_ = a & 0xffff; + struct timespec ts; + u64 t64; + + switch (a_) { + case 0x0a00: // TCOUNT, 1/7372800s + clock_gettime(CLOCK_REALTIME, &ts); + t64 = (u64)ts.tv_sec * 1000000000 + ts.tv_nsec; + // t * 7372800.0 / 1000000000 * 0x100000000 ~= t * 31665935 + t64 *= 31665935; + d = t64 >> 32; + break; + } + } + if ((a & 0xfff00000) == 0x7f100000) { + u32 *bl = &blitter.dstctrl; + u32 a_ = a & 0xfff; + if (a_ < 0x40) { + d = bl[a_ / 4]; + if (a_ == 0x34) + d = 0; // not busy + goto out; + } + } + iolog_unh("r32", a, d, 32); - //if ((a & 0xfff00000) == 0x7f100000) { static int a; a ^= ~1; return a; } - iolog("r32 %08x\n", a); - mem = translate_addr(a, &mask); - return mem[(a & mask) / 4]; +out: + iolog("r32", a, d, 32); + return d; } static void xwrite8(u32 a, u32 d) { - volatile u8 *mem; - u32 mask; - - iolog("w8 %08x %08x\n", a, d); - mem = translate_addr(a, &mask); - mem[a & mask] = d; + iolog("w8 ", a, d, 8); + iolog_unh("w8 ", a, d, 8); } static void xwrite16(u32 a, u32 d) { - volatile u16 *mem; - u32 mask; - - iolog("w16 %08x %08x\n", a, d); - mem = translate_addr(a, &mask); - mem[(a & mask) / 2] = d; + iolog("w16", a, d, 16); + if ((a & 0xfff00000) == 0x7f000000) { + u32 a_ = a & 0xffff; + switch (a_) { + case 0x28da: + mmsp2.mlc_stl_cntl = d | 0xaa; + break; + case 0x290e: + case 0x2910: + // odd addresses don't affect LCD. What about TV? + return; + case 0x2912: + mmsp2.mlc_stl_adrl = d; + return; + case 0x2914: + mmsp2.mlc_stl_adrh = d; + if (mmsp2.mlc_stl_adr != mmsp2.old_mlc_stl_adr) + // ask for refresh + pthread_cond_signal(&fb_cond); + mmsp2.old_mlc_stl_adr = mmsp2.mlc_stl_adr; + return; + case 0x2958: + mmsp2.mlc_stl_pallt_a = d & 0x1ff; + return; + case 0x295a: + mmsp2.mlc_stl_pallt_d[mmsp2.mlc_stl_pallt_a++] = d; + mmsp2.mlc_stl_pallt_a &= 0x1ff; + mmsp2.dirty_pal = 1; + return; + } + } + iolog_unh("w16", a, d, 16); } static void xwrite32(u32 a, u32 d) { - volatile u32 *mem; - u32 mask; + iolog("w32", a, d, 32); - iolog("w32 %08x %08x\n", a, d); - mem = translate_addr(a, &mask); - mem[(a & mask) / 4] = d; + if ((a & 0xfff00000) == 0x7f100000) { + u32 *bl = &blitter.dstctrl; + u32 a_ = a & 0xfff; + if (a_ < 0x40) { + bl[a_ / 4] = d; + if (a_ == 0x34 && (d & 1)) + blitter_do(); + return; + } + } + iolog_unh("w32", a, d, 32); } +#define LINKPAGE_SIZE 0x1000 +#define LINKPAGE_COUNT 4 +#define LINKPAGE_ALLOC (LINKPAGE_SIZE * LINKPAGE_COUNT) + +struct op_context { + u32 pc; + u32 op; + u32 code[0]; +}; + +struct op_linkpage { + void (*handler)(struct op_context *op_ctx); + u32 code[0]; +}; + +struct op_stackframe { + u32 saved_regs[15]; + u32 cpsr; +}; + +static struct op_linkpage *g_linkpage; +static u32 *g_code_ptr; +static int g_linkpage_count; + #define BIT_SET(v, b) (v & (1 << (b))) -static void handle_op(u32 pc, u32 op, u32 *regs, u32 addr_check) +void emu_handle_op(struct op_context *op_ctx, struct op_stackframe *sframe) { + u32 *regs = sframe->saved_regs; + u32 op = op_ctx->op; u32 t, shift, ret, addr; int rn, rd; @@ -183,29 +661,7 @@ static void handle_op(u32 pc, u32 op, u32 *regs, u32 addr_check) return; unhandled: - fprintf(stderr, "unhandled IO op %08x @ %08x\n", op, pc); -} - -#define LINKPAGE_SIZE 0x1000 -#define LINKPAGE_COUNT 4 -#define LINKPAGE_ALLOC (LINKPAGE_SIZE * LINKPAGE_COUNT) - -struct linkpage { - u32 saved_regs[15]; - u32 *lp_r1; - void (*handler)(u32 addr_pc, u32 op, u32 *regs, u32 addr_check); - u32 code[0]; -}; - -static struct linkpage *g_linkpage; -static u32 *g_code_ptr; -static int g_linkpage_count; - -static void init_linkpage(void) -{ - g_linkpage->lp_r1 = &g_linkpage->saved_regs[1]; - g_linkpage->handler = handle_op; - g_code_ptr = g_linkpage->code; + err("unhandled IO op %08x @ %08x\n", op, op_ctx->pc); } static u32 make_offset12(u32 *pc, u32 *target) @@ -218,24 +674,24 @@ static u32 make_offset12(u32 *pc, u32 *target) u = 0; } if (lp_offs >= LINKPAGE_SIZE) { - fprintf(stderr, "linkpage too far: %d\n", lp_offs); + err("linkpage too far: %d\n", lp_offs); abort(); } return (u << 23) | lp_offs; } -static u32 make_jmp(u32 *pc, u32 *target) +static u32 make_jmp(u32 *pc, u32 *target, int bl) { int jmp_val; jmp_val = target - pc - 2; if (jmp_val < (int)0xff000000 || jmp_val > 0x00ffffff) { - fprintf(stderr, "jump out of range (%p -> %p)\n", pc, target); + err("jump out of range (%p -> %p)\n", pc, target); abort(); } - return 0xea000000 | (jmp_val & 0x00ffffff); + return 0xea000000 | (bl << 24) | (jmp_val & 0x00ffffff); } static void emit_op(u32 op) @@ -249,59 +705,63 @@ static void emit_op_io(u32 op, u32 *target) emit_op(op); } +static void init_linkpage(void) +{ + g_linkpage->handler = emu_call_handle_op; + g_code_ptr = g_linkpage->code; +} + static void segv_sigaction(int num, siginfo_t *info, void *ctx) { struct ucontext *context = ctx; u32 *regs = (u32 *)&context->uc_mcontext.arm_r0; u32 *pc = (u32 *)regs[15]; - u32 old_op = *pc; - u32 *pc_ptr, *old_op_ptr; - int lp_size; + struct op_context *op_ctx; + int i, lp_size; - if (((regs[15] ^ (u32)&segv_sigaction) & 0xff000000) == 0 || // PC is in our segment or - (((regs[15] ^ (u32)g_linkpage) & ~(LINKPAGE_ALLOC - 1)) == 0)) // .. in linkpage + if (((regs[15] ^ (u32)&segv_sigaction) & 0xff000000) == 0 || // PC is in our segment or + (((regs[15] ^ (u32)g_linkpage) & ~(LINKPAGE_ALLOC - 1)) == 0) || // .. in linkpage + ((long)info->si_addr & 0xffe00000) != 0x7f000000) // faulting not where expected { // real crash - time to die - printf("segv %d %p @ %08x\n", info->si_code, info->si_addr, regs[15]); + err("segv %d %p @ %08x\n", info->si_code, info->si_addr, regs[15]); + for (i = 0; i < 8; i++) + dbg(" r%d=%08x r%2d=%08x\n", i, regs[i], i+8, regs[i+8]); signal(num, SIG_DFL); raise(num); + return; } - printf("segv %d %p @ %08x\n", info->si_code, info->si_addr, regs[15]); + segvlog("segv %d %p @ %08x\n", info->si_code, info->si_addr, regs[15]); // spit PC and op - pc_ptr = g_code_ptr++; - old_op_ptr = g_code_ptr++; - *pc_ptr = (u32)pc; - *old_op_ptr = old_op; + op_ctx = (void *)g_code_ptr; + op_ctx->pc = (u32)pc; + op_ctx->op = *pc; + g_code_ptr = &op_ctx->code[0]; // emit jump to code ptr - *pc = make_jmp(pc, g_code_ptr); + *pc = make_jmp(pc, g_code_ptr, 0); // generate code: - // TODO: our own stack - emit_op_io(0xe50f0000, &g_linkpage->saved_regs[0]); // str r0, [saved_regs[0]] @ save r0 - emit_op_io(0xe51f0000, (u32 *)&g_linkpage->lp_r1); // ldr r0, =lp_r1 - emit_op (0xe8807ffe); // stmia r0, {r1-r14} - emit_op (0xe2402004); // sub r2, r0, #4 - emit_op_io(0xe51f0000, pc_ptr); // ldr r0, =pc - emit_op_io(0xe51f1000, old_op_ptr); // ldr r1, =old_op - emit_op (0xe1a04002); // mov r4, r2 - emit_op (0xe1a0e00f); // mov lr, pc - emit_op_io(0xe51ff000, (u32 *)&g_linkpage->handler); // ldr pc, =handle_op - emit_op (0xe8947fff); // ldmia r4, {r0-r14} - emit_op (make_jmp(g_code_ptr, pc + 1)); // jmp + emit_op (0xe50d0000 + 0xf00 - 4 * 0); // str r0, [sp, #(-0xf00 + r0_offs)] + emit_op (0xe50de000 + 0xf00 - 4 * 14); // str lr, [sp, #(-0xf00 + lr_offs)] + emit_op (0xe24f0000 + (g_code_ptr - (u32 *)op_ctx + 2) * 4); // sub r0, pc, #op_ctx + emit_op (0xe1a0e00f); // mov lr, pc + emit_op_io(0xe51ff000, (u32 *)&g_linkpage->handler); // ldr pc, =handle_op + emit_op (0xe51de000 + 0xf00 - 4 * 14); // ldr lr, [sp, #(-0xf00 + lr_offs)] + emit_op (make_jmp(g_code_ptr, pc + 1, 0)); // jmp // sync caches sys_cacheflush(pc, pc + 1); sys_cacheflush(g_linkpage, g_code_ptr); lp_size = (char *)g_code_ptr - (char *)g_linkpage; - printf("code #%d %d/%d\n", g_linkpage_count, lp_size, LINKPAGE_SIZE); + segvlog("code #%d %d/%d\n", g_linkpage_count, lp_size, LINKPAGE_SIZE); if (lp_size + 13*4 > LINKPAGE_SIZE) { g_linkpage_count++; if (g_linkpage_count >= LINKPAGE_COUNT) { - fprintf(stderr, "too many linkpages needed\n"); + err("too many linkpages needed\n"); abort(); } g_linkpage = (void *)((char *)g_linkpage + LINKPAGE_SIZE); @@ -313,54 +773,301 @@ static void segv_sigaction(int num, siginfo_t *info, void *ctx) void emu_init(void *map_bottom) { - struct sigaction segv_action = { + sigaction_t segv_action = { .sa_sigaction = segv_sigaction, .sa_flags = SA_SIGINFO, }; - void *ret; - - sigemptyset(&segv_action.sa_mask); - sigaction(SIGSEGV, &segv_action, NULL); + pthread_t tid; + void *pret; + int ret; g_linkpage = (void *)(((u32)map_bottom - LINKPAGE_ALLOC) & ~0xfff); - ret = mmap(g_linkpage, LINKPAGE_ALLOC, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0); - if (ret != g_linkpage) { - perror("mmap linkpage"); + pret = mmap(g_linkpage, LINKPAGE_ALLOC, PROT_READ|PROT_WRITE, + MAP_PRIVATE|MAP_ANONYMOUS|MAP_FIXED, -1, 0); + if (pret != g_linkpage) { + perror(PFX "mmap linkpage"); exit(1); } - printf("linkpages @ %p\n", g_linkpage); + log("linkpages @ %p\n", g_linkpage); init_linkpage(); - memdev = open("/dev/mem", O_RDWR); - memregs = mmap(NULL, 0x10000, PROT_READ|PROT_WRITE, MAP_SHARED, memdev, 0xc0000000); - blitter = mmap(NULL, 0x100, PROT_READ|PROT_WRITE, MAP_SHARED, memdev, 0xe0020000); - //blitter = mmap(NULL, 0x100, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0); - printf("mapped %d %p %p\n", memdev, memregs, blitter); + // host stuff + ret = host_init(); + if (ret != 0) { + err("can't init host\n"); + exit(1); + } + + ret = host_video_init(NULL, 0); + if (ret != 0) { + err("can't init host video\n"); + exit(1); + } + +#ifdef WIZ + // we are short on memmory on Wiz, need special handling + extern void *host_mmap_upper(void); + mmsp2.umem = host_mmap_upper(); +#else + mmsp2.umem = mmap(NULL, 0x2000000, PROT_READ|PROT_WRITE|PROT_EXEC, + MAP_PRIVATE|MAP_ANONYMOUS, -1, 0); +#endif + if (mmsp2.umem == MAP_FAILED) { + perror(PFX "mmap upper mem"); + exit(1); + } + + ret = pthread_create(&tid, NULL, fb_sync_thread, NULL); + if (ret != 0) { + err("failed to create fb_sync_thread: %d\n", ret); + exit(1); + } + pthread_detach(tid); + + // mmsp2 defaults + mmsp2.mlc_stl_adr = 0x03101000; // fb2 is at 0x03381000 + mmsp2.mlc_stl_cntl = 0x4ab; // 16bpp, region 1 active + + sigemptyset(&segv_action.sa_mask); + sigaction(SIGSEGV, &segv_action, NULL); } -void *emu_mmap_dev(unsigned int length, int prot, int flags, unsigned int offset) +int emu_read_gpiodev(void *buf, int count) { - char name[32]; - int fd; + if (count <= 0) { + err("gpiodev read %d?\n", count); + return -1; + } + if (count > 4) + count = 4; + mmsp2.btn_state = host_read_btns(); + memcpy(buf, &mmsp2.btn_state, count); + return count; +} + +struct dev_fd_t emu_interesting_fds[] = { + [IFD_SOUND] = { "/dev/dsp", -1 }, + { NULL, 0 }, +}; + +static void *emu_mmap_dev(unsigned int length, int prot, int flags, unsigned int offset) +{ + u8 *umem, *umem_end; + + // SoC regs if ((offset & ~0xffff) == 0xc0000000) { return mmap((void *)0x7f000000, length, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_FIXED|MAP_NORESERVE, -1, 0); } + // blitter if ((offset & ~0xffff) == 0xe0020000) { return mmap((void *)0x7f100000, length, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_FIXED|MAP_NORESERVE, -1, 0); } - // pass through - if ((offset & 0xfe000000) == 0x02000000) - return mmap(NULL, length, prot, flags, memdev, offset); + // upper mem + if ((offset & 0xfe000000) != 0x02000000) { + err("unexpected devmem mmap @ %08x\n", offset); + errno = EINVAL; + return MAP_FAILED; + } + + umem = uppermem_lookup(offset, &umem_end); + if (umem + length > umem_end) + err("warning: uppermem @ %08x overflows by %d bytes\n", + offset, umem + length - umem_end); + + dbg("upper mem @ %08x %d\n", offset, length); + return umem; +} + +void *emu_do_mmap(unsigned int length, int prot, int flags, int fd, unsigned int offset) +{ + if (fd == FAKEDEV_MEM) + return emu_mmap_dev(length, prot, flags, offset); + + if (fd == FAKEDEV_FB0) + return emu_mmap_dev(length, prot, flags, offset + 0x03101000); + + if (fd == FAKEDEV_FB1) + return emu_mmap_dev(length, prot, flags, offset + 0x03381000); + + err("bad/ni mmap(?, %d, %x, %x, %d, %08x)\n", length, prot, flags, fd, offset); + errno = EINVAL; + return MAP_FAILED; +} + +static int emu_sound_ioctl(int fd, int request, void *argp) +{ + int *arg = argp; + +#if 0 + dbg("snd ioctl(%d, %08x, %p)", fd, request, argp); + if (arg != NULL) + dbg_c(" [%d]", *arg); + dbg_c("\n"); +#endif + + /* People set strange frag settings on GP2X, which even manage + * to break audio on pandora (causes writes to fail). + * Catch this and set to something that works. */ + if (request == SNDCTL_DSP_SPEED) { + int ret, bsize, frag; + + // ~4ms. gpSP wants small buffers or else it stutters + // because of it's audio thread sync stuff + bsize = *arg / 250 * 4; + for (frag = 0; bsize; bsize >>= 1, frag++) + ; + + frag |= 16 << 16; // fragment count + ret = ioctl(fd, SNDCTL_DSP_SETFRAGMENT, &frag); + if (ret != 0) { + err("snd ioctl SETFRAGMENT %08x: ", frag); + perror(NULL); + } + } + else if (request == SNDCTL_DSP_SETFRAGMENT) + return 0; + + return ioctl(fd, request, argp); +} + +int emu_do_ioctl(int fd, int request, void *argp) +{ + if (fd == emu_interesting_fds[IFD_SOUND].fd) + return emu_sound_ioctl(fd, request, argp); + + switch (fd) { + /* *********************** */ + case FAKEDEV_FB0: + case FAKEDEV_FB1: + if (argp == NULL) + goto fail; + + switch (request) { + case FBIOGET_FSCREENINFO: { + struct fb_fix_screeninfo *fix = argp; + + memset(fix, 0, sizeof(*fix)); + strcpy(fix->id, "mmsp2_RGB0"); + fix->type = FB_TYPE_PACKED_PIXELS; + fix->accel = FB_ACCEL_NONE; + fix->visual = FB_VISUAL_TRUECOLOR; + fix->line_length = 320*2; + fix->smem_start = (fd == FAKEDEV_FB0) ? 0x03101000 : 0x03381000; + fix->smem_len = 320*240*2; + return 0; + } + case FBIOGET_VSCREENINFO: { + struct fb_var_screeninfo *var = argp; + static const struct fb_bitfield fbb_red = { offset: 11, length: 5, }; + static const struct fb_bitfield fbb_green = { offset: 5, length: 6, }; + static const struct fb_bitfield fbb_blue = { offset: 0, length: 5, }; + + memset(var, 0, sizeof(*var)); + var->activate = FB_ACTIVATE_NOW; + var->xres = + var->xres_virtual = 320; + var->yres = + var->yres_virtual = 240; + var->width = + var->height = -1; + var->vmode = FB_VMODE_NONINTERLACED; + var->bits_per_pixel = 16; + var->red = fbb_red; + var->green = fbb_green; + var->blue = fbb_blue; + return 0; + } + case FBIOPUT_VSCREENINFO: { + struct fb_var_screeninfo *var = argp; + dbg(" put vscreen: %dx%d@%d\n", var->xres, var->yres, var->bits_per_pixel); + if (var->xres != 320 || var->yres != 240 || var->bits_per_pixel != 16) + return -1; + return 0; + } + } + + /* *********************** */ + case FAKEDEV_TTY0: + // fake tty0 to make GPH SDL happy + if (request == 0x4b46) // KDGKBENT + return -1; + return 0; + } + +fail: + err("bad/ni ioctl(%d, %08x, %p)\n", fd, request, argp); + errno = EINVAL; + return -1; +} + +static const struct { + const char *from; + const char *to; +} path_map[] = { + { "/mnt/tmp/", "/tmp/" }, +}; + +static const char *wrap_path(const char *path) +{ + char *buff; + size_t size; + int i, len; + + // do only path mapping for now + for (i = 0; i < ARRAY_SIZE(path_map); i++) { + len = strlen(path_map[i].from); + if (strncmp(path, path_map[i].from, len) == 0) { + size = strlen(path) + strlen(path_map[i].to) + 1; + buff = malloc(size); + if (buff == NULL) + break; + snprintf(buff, size, "%s%s", path_map[i].to, path + len); + dbg("mapped path \"%s\" -> \"%s\"\n", path, buff); + return buff; + } + } + + return path; +} + +void *emu_do_fopen(const char *path, const char *mode) +{ + const char *w_path = wrap_path(path); + FILE *ret; + ret = fopen(w_path, mode); + if (w_path != path) + free((void *)w_path); + return ret; +} + +// FIXME: threads.. +int emu_do_system(const char *command) +{ + static char tmp_path[512]; + const char *p2; + char *p; + + if (command == NULL) + return -1; + + // pass through stuff in PATH + p = strchr(command, ' '); + p2 = strchr(command, '/'); + if (p2 == NULL || (p != NULL && p2 > p)) + return system(command); + + make_local_path(tmp_path, sizeof(tmp_path), "ginge_prep"); + p = tmp_path + strlen(tmp_path); - sprintf(name, "m%08x", offset); - fd = open(name, O_CREAT|O_RDWR, 0644); - lseek(fd, length - 1, SEEK_SET); - name[0] = 0; - write(fd, name, 1); + p2 = wrap_path(command); + snprintf(p, sizeof(tmp_path) - (p - tmp_path), " %s", p2); + if (p2 != command) + free((void *)p2); - return mmap(NULL, length, prot, MAP_SHARED, fd, 0); + dbg("system: \"%s\"\n", tmp_path); + return system(tmp_path); }