#include <stdio.h>
#include <stdlib.h>
#include <string.h>
+#include <alloca.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include <signal.h>
#include <asm/ucontext.h>
+#include <pthread.h>
+#include <errno.h>
+#include <time.h>
+#include <sys/resource.h>
#include "header.h"
#include "sys_cacheflush.h"
//#define LOG_IO
-//#define LOG_IO_UNH
+//#define LOG_IO_UNK
//#define LOG_SEGV
#ifdef LOG_IO
#define iolog(...)
#endif
-#ifdef LOG_IO_UNH
+#ifdef LOG_IO_UNK
#define iolog_unh log_io
#else
#define iolog_unh(...)
#define segvlog(...)
#endif
-#if defined(LOG_IO) || defined(LOG_IO_UNH)
+#if defined(LOG_IO) || defined(LOG_IO_UNK)
#include "mmsp2-regs.h"
#endif
typedef unsigned short u16;
typedef unsigned char u8;
+static pthread_mutex_t fb_mutex = PTHREAD_MUTEX_INITIALIZER;
+static pthread_cond_t fb_cond = PTHREAD_COND_INITIALIZER;
+
struct uppermem_block {
u32 addr; // physical
u32 size;
static int host_stride;
-#if defined(LOG_IO) || defined(LOG_IO_UNH)
+#if defined(LOG_IO) || defined(LOG_IO_UNK)
static void log_io(const char *pfx, u32 a, u32 d, int size)
{
const char *fmt, *reg = "";
switch (size) {
- case 8: fmt = "%s %08x %02x %s\n"; break;
- case 32: fmt = "%s %08x %08x %s\n"; break;
- default: fmt = "%s %08x %04x %s\n"; break;
+ 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 & ~0xffff) == 0x7f000000)
return NULL;
}
-static void *blitter_mem_lookup(u32 addr, u8 **mem_end, int *stride_override, int *to_screen)
-{
- // maybe the screen?
- if (mmsp2.mlc_stl_adr <= addr && addr < mmsp2.mlc_stl_adr + 320*240*2) {
- *mem_end = (u8 *)host_screen + host_stride * 240;
- *stride_override = host_stride;
- *to_screen = 1;
- return (u8 *)host_screen + addr - mmsp2.mlc_stl_adr;
- }
-
- return uppermem_lookup(addr, mem_end);
-}
-
static void blitter_do(void)
{
u8 *dst, *dste, *src = NULL, *srce = NULL;
// XXX: need to confirm this..
addr = (blitter.dstaddr & ~3) | ((blitter.dstctrl & 0x1f) >> 3);
- dst = blitter_mem_lookup(addr, &dste, &dstrd, &to_screen);
- if (dst == NULL)
- goto bad_blit;
+
+ // maybe the screen?
+ if (w == 320 && h == 240 && 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) {
goto bad_blit;
addr = (blitter.srcaddr & ~3) | ((blitter.srcctrl & 0x1f) >> 3);
- src = blitter_mem_lookup(addr, &srce, &sstrd, &to_screen);
+ src = uppermem_lookup(addr, &srce);
if (src == NULL)
goto bad_blit;
}
if (to_screen)
- host_screen = host_video_flip();
+ pthread_cond_signal(&fb_cond);
return;
bad_blit:
}
// TODO: hw scaler stuff
-static void mlc_flip(u32 addr)
+static void mlc_flip(u8 *src, int bpp)
{
- int mode = (mmsp2.mlc_stl_cntl >> 9) & 3;
- int bpp = mode ? mode * 8 : 4;
u16 *dst = host_screen;
u16 *hpal = mmsp2.host_pal;
- u8 *src, *src_end;
int i, u;
- src = uppermem_lookup(addr, &src_end);
- if (src == NULL || src + 320*240 * bpp / 8 > src_end) {
- err("mlc_flip: %08x is out of range\n", addr);
- return;
- }
-
if (bpp <= 8 && mmsp2.dirty_pal) {
u32 *srcp = mmsp2.mlc_stl_pallt_d32;
u16 *dstp = hpal;
host_screen = host_video_flip();
}
+#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)
+ log("fb_thread: switch to manual refresh\n");
+ } else {
+ ts_add_nsec(ts, 16666667);
+ if (manual_refresh > 1)
+ log("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);
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;
case 0x2914:
mmsp2.mlc_stl_adrh = d;
if (mmsp2.mlc_stl_adr != mmsp2.old_mlc_stl_adr)
- mlc_flip(mmsp2.mlc_stl_adr);
+ // ask for refresh
+ pthread_cond_signal(&fb_cond);
mmsp2.old_mlc_stl_adr = mmsp2.mlc_stl_adr;
return;
case 0x2958:
static u32 *g_code_ptr;
static int g_linkpage_count;
-#define HANDLER_STACK_SIZE 4096
static void *g_handler_stack_end;
#define BIT_SET(v, b) (v & (1 << (b)))
err("segv %d %p @ %08x\n", info->si_code, info->si_addr, regs[15]);
signal(num, SIG_DFL);
raise(num);
+ return;
}
segvlog("segv %d %p @ %08x\n", info->si_code, info->si_addr, regs[15]);
.sa_sigaction = segv_sigaction,
.sa_flags = SA_SIGINFO,
};
+ pthread_t tid;
void *pret;
int ret;
- sigemptyset(&segv_action.sa_mask);
- sigaction(SIGSEGV, &segv_action, NULL);
-
- pret = mmap(NULL, HANDLER_STACK_SIZE + 4096, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_NORESERVE, -1, 0);
- if (pret == MAP_FAILED) {
- perror(PFX "mmap handler_stack");
- exit(1);
- }
- ret = mprotect((char *)pret + 4096, HANDLER_STACK_SIZE, PROT_READ | PROT_WRITE);
- if (ret != 0) {
- perror(PFX "mprotect handler_stack");
- exit(1);
- }
- g_handler_stack_end = (char *)pret + HANDLER_STACK_SIZE + 4096;
+ g_handler_stack_end = (void *)((long)alloca(1536 * 1024) & ~0xffff);
+ log("handler stack @ %p (current %p)\n", g_handler_stack_end, &ret);
+ // touch it now. If we crash now we'll know why
+ *((char *)g_handler_stack_end - 4096) = 1;
g_linkpage = (void *)(((u32)map_bottom - LINKPAGE_ALLOC) & ~0xfff);
pret = mmap(g_linkpage, LINKPAGE_ALLOC, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0);
perror(PFX "mmap linkpage");
exit(1);
}
- printf("linkpages @ %p\n", g_linkpage);
+ log("linkpages @ %p\n", g_linkpage);
init_linkpage();
// host stuff
exit(1);
}
host_screen = host_video_flip();
+
+ 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
+
+ sigemptyset(&segv_action.sa_mask);
+ sigaction(SIGSEGV, &segv_action, NULL);
}
int emu_read_gpiodev(void *buf, int count)
if ((offset & 0xfe000000) != 0x02000000)
err("unexpected devmem mmap @ %08x\n", offset);
- // return mmap(NULL, length, prot, flags, memdev, offset);
-
umem = calloc(1, sizeof(*umem));
if (umem == NULL) {
- printf("OOM\n");
+ err("OOM\n");
return MAP_FAILED;
}
if (umem->mem != MAP_FAILED)
goto done;
- printf("upper mem @ %08x %d mmap fail, trying backing file\n", offset, length);
+ log("upper mem @ %08x %d mmap fail, trying backing file\n", offset, length);
sprintf(name, "m%08x", offset);
fd = open(name, O_CREAT|O_RDWR, 0644);
lseek(fd, length - 1, SEEK_SET);
}
done:
- printf("upper mem @ %08x %d\n", offset, length);
+ log("upper mem @ %08x %d\n", offset, length);
umem->next = upper_mem;
upper_mem = umem;
return umem->mem;
#include "sys_cacheflush.h"
#define strace(...)
+//#define strace printf
static const unsigned int sig_open[] = {
0xe59cc000, 0xe33c0000, 0x1a000003, 0xef900005
0xe59fc080, 0xe59cc000, 0xe33c0000, 0x1a000003, 0xef900003
};
-#define FAKE_DEVMEM_DEVICE 10001
-#define FAKE_DEVGPIO_DEVICE 10002
+enum {
+ FAKEDEV_MEM = 10001,
+ FAKEDEV_GPIO,
+ FAKEDEV_FB0,
+ FAKEDEV_FB1,
+ FAKEDEV_MMUHACK,
+};
+
+static const struct {
+ const char *name;
+ int fd;
+} takeover_devs[] = {
+ { "/dev/mem", FAKEDEV_MEM },
+ { "/dev/GPIO", FAKEDEV_GPIO },
+ { "/dev/fb0", FAKEDEV_FB0 },
+ { "/dev/fb/0", FAKEDEV_FB0 },
+ { "/dev/fb1", FAKEDEV_FB1 },
+ { "/dev/fb/1", FAKEDEV_FB1 },
+ { "/dev/mmuhack", FAKEDEV_MMUHACK },
+};
static int w_open(const char *pathname, int flags, mode_t mode)
{
- int ret;
- if (strcmp(pathname, "/dev/mem") == 0)
- ret = FAKE_DEVMEM_DEVICE;
- else if (strcmp(pathname, "/dev/GPIO") == 0)
- ret = FAKE_DEVGPIO_DEVICE;
- else
+ int i, ret;
+
+ for (i = 0; i < ARRAY_SIZE(takeover_devs); i++) {
+ if (strcmp(pathname, takeover_devs[i].name) == 0) {
+ ret = takeover_devs[i].fd;
+ break;
+ }
+ }
+
+ if (i == ARRAY_SIZE(takeover_devs))
ret = open(pathname, flags, mode);
strace("open(%s) = %d\n", pathname, ret);
static void *w_mmap(void *addr, size_t length, int prot, int flags, int fd, off_t offset)
{
void *ret;
- if (fd != FAKE_DEVMEM_DEVICE)
+ if (fd != FAKEDEV_MEM)
ret = mmap(addr, length, prot, flags, fd, offset);
else
ret = emu_mmap_dev(length, prot, flags, offset);
- strace("mmap(%p, %x, %x, %x, %d, %lx) = %p\n", addr, length, prot, flags, fd, (long)offset, ret);
+ // threads are using heap before they mmap their stack
+ // printf needs valid stack for pthtead/errno
+ if (((long)&ret & 0xf0000000) == 0xb0000000)
+ strace("mmap(%p, %x, %x, %x, %d, %lx) = %p\n", addr, length, prot, flags, fd, (long)offset, ret);
return ret;
}
#define w_mmap_ w_mmap
ssize_t w_read(int fd, void *buf, size_t count)
{
ssize_t ret;
- if (fd != FAKE_DEVGPIO_DEVICE)
+ if (fd != FAKEDEV_GPIO)
return read(fd, buf, count);
ret = emu_read_gpiodev(buf, count);
notaz.gp2x.de / ginge.git / commitdiff