+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)", length, prot, flags, fd, offset);
+ errno = EINVAL;
+ return MAP_FAILED;
+}
+
+#include <sys/ioctl.h>
+#include <linux/soundcard.h>
+
+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);
+}
+
+#include <linux/fb.h>
+
+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);
+
+ if (argp == NULL)
+ goto fail;
+
+ if (fd == FAKEDEV_FB0 || fd == FAKEDEV_FB1) {
+ 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->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: 0, length: 4, };
+ static const struct fb_bitfield fbb_green = { offset: 0, length: 4, };
+ static const struct fb_bitfield fbb_blue = { offset: 0, length: 4, };
+
+ 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;
+ }
+ }
+ }
+
+fail:
+ err("bad/ni ioctl(%d, %08x, %p)", fd, request, argp);
+ errno = EINVAL;
+ return -1;
+}
+