From f882c345911ae8491ba84929240e53b18d744241 Mon Sep 17 00:00:00 2001 From: gbeauche <> Date: Fri, 22 Sep 2000 17:16:31 +0000 Subject: [PATCH] - added direct and real addressing modes support - added Video on SEGV signals support --- BasiliskII/src/Unix/video_x.cpp | 538 ++++++++++++++++++++++++++++++-- 1 file changed, 515 insertions(+), 23 deletions(-) diff --git a/BasiliskII/src/Unix/video_x.cpp b/BasiliskII/src/Unix/video_x.cpp index c922bb09..2904e13d 100644 --- a/BasiliskII/src/Unix/video_x.cpp +++ b/BasiliskII/src/Unix/video_x.cpp @@ -52,6 +52,14 @@ # include #endif +#ifdef ENABLE_VOSF +# include // log() +# include +# include +# include +# include +#endif + #include "cpu_emulation.h" #include "main.h" #include "adb.h" @@ -154,6 +162,68 @@ static XF86VidModeModeInfo **x_video_modes; // Array of all available modes static int num_x_video_modes; #endif +#ifdef ENABLE_VOSF +static bool use_vosf = true; // Flag: VOSF enabled +#else +static const bool use_vosf = false; // Flag: VOSF enabled +#endif + +#ifdef ENABLE_VOSF +static uint8 * the_host_buffer; // Host frame buffer in VOSF mode +static uint32 the_buffer_size; // Size of allocated the_buffer +#endif + +#ifdef ENABLE_VOSF +// Variables for Video on SEGV support (taken from the Win32 port) +struct ScreenPageInfo { + int top, bottom; // Mapping between this virtual page and Mac scanlines +}; + +struct ScreenInfo { + uint32 memBase; // Real start address + uint32 memStart; // Start address aligned to page boundary + uint32 memEnd; // Address of one-past-the-end of the screen + uint32 memLength; // Length of the memory addressed by the screen pages + + uint32 pageSize; // Size of a page + int pageBits; // Shift count to get the page number + uint32 pageCount; // Number of pages allocated to the screen + + uint8 * dirtyPages; // Table of flags set if page was altered + ScreenPageInfo * pageInfo; // Table of mappings page -> Mac scanlines +}; + +static ScreenInfo mainBuffer; + +#define PFLAG_SET(page) mainBuffer.dirtyPages[page] = 1 +#define PFLAG_CLEAR(page) mainBuffer.dirtyPages[page] = 0 +#define PFLAG_ISSET(page) mainBuffer.dirtyPages[page] +#define PFLAG_ISCLEAR(page) (mainBuffer.dirtyPages[page] == 0) +#ifdef UNALIGNED_PROFITABLE +# define PFLAG_ISCLEAR_4(page) (*((uint32 *)(mainBuffer.dirtyPages + page)) == 0) +#else +# define PFLAG_ISCLEAR_4(page) \ + (mainBuffer.dirtyPages[page ] == 0) \ + && (mainBuffer.dirtyPages[page+1] == 0) \ + && (mainBuffer.dirtyPages[page+2] == 0) \ + && (mainBuffer.dirtyPages[page+3] == 0) +#endif +#define PFLAG_CLEAR_ALL memset(mainBuffer.dirtyPages, 0, mainBuffer.pageCount) +#define PFLAG_SET_ALL memset(mainBuffer.dirtyPages, 1, mainBuffer.pageCount) + +static int zero_fd = -1; +static bool Screen_fault_handler_init(); +static struct sigaction vosf_sa; + +#ifdef HAVE_PTHREADS +static pthread_mutex_t Screen_draw_lock = PTHREAD_MUTEX_INITIALIZER; // Mutex to protect frame buffer (dirtyPages in fact) +#endif + +#endif + +// VideoRefresh function +void VideoRefreshInit(void); +static void (*video_refresh)(void); // Prototypes static void *redraw_func(void *arg); @@ -167,6 +237,10 @@ extern Display *x_display; // From sys_unix.cpp extern void SysMountFirstFloppy(void); +#ifdef ENABLE_VOSF +# include "video_vosf.h" +#endif + /* * Initialization @@ -175,7 +249,7 @@ extern void SysMountFirstFloppy(void); // Set VideoMonitor according to video mode void set_video_monitor(int width, int height, int bytes_per_row, bool native_byte_order) { -#if !REAL_ADDRESSING +#if !REAL_ADDRESSING && !DIRECT_ADDRESSING int layout = FLAYOUT_DIRECT; switch (depth) { case 1: @@ -337,8 +411,20 @@ static bool init_window(int width, int height) img->bitmap_bit_order = MSBFirst; } +#ifdef ENABLE_VOSF + // Allocate a page-aligned chunk of memory for frame buffer + the_buffer_size = align_on_page_boundary((aligned_height + 2) * img->bytes_per_line); + the_host_buffer = the_buffer_copy; + + the_buffer_copy = (uint8 *)allocate_framebuffer(the_buffer_size); + memset(the_buffer_copy, 0, the_buffer_size); + + the_buffer = (uint8 *)allocate_framebuffer(the_buffer_size); + memset(the_buffer, 0, the_buffer_size); +#else // Allocate memory for frame buffer the_buffer = (uint8 *)malloc((aligned_height + 2) * img->bytes_per_line); +#endif // Create GC the_gc = XCreateGC(x_display, the_win, 0, 0); @@ -352,14 +438,19 @@ static bool init_window(int width, int height) XDefineCursor(x_display, the_win, mac_cursor); // Set VideoMonitor + bool native_byte_order; #ifdef WORDS_BIGENDIAN - set_video_monitor(width, height, img->bytes_per_line, img->bitmap_bit_order == MSBFirst); + native_byte_order = (img->bitmap_bit_order == MSBFirst); #else - set_video_monitor(width, height, img->bytes_per_line, img->bitmap_bit_order == LSBFirst); + native_byte_order = (img->bitmap_bit_order == LSBFirst); #endif +#ifdef ENABLE_VOSF + do_update_framebuffer = GET_FBCOPY_FUNC(depth, native_byte_order, DISPLAY_WINDOW); +#endif + set_video_monitor(width, height, img->bytes_per_line, native_byte_order); -#if REAL_ADDRESSING - VideoMonitor.mac_frame_base = (uint32)the_buffer; +#if REAL_ADDRESSING || DIRECT_ADDRESSING + VideoMonitor.mac_frame_base = Host2MacAddr(the_buffer); #else VideoMonitor.mac_frame_base = MacFrameBaseMac; #endif @@ -492,9 +583,29 @@ static bool init_fbdev_dga(char *in_fb_name) } } +#if REAL_ADDRESSING || DIRECT_ADDRESSING + // If the blit function is null, i.e. just a copy of the buffer, + // we first try to avoid the allocation of a temporary frame buffer + use_vosf = true; + do_update_framebuffer = GET_FBCOPY_FUNC(depth, true, DISPLAY_DGA); + if (do_update_framebuffer == FBCOPY_FUNC(fbcopy_raw)) + use_vosf = false; + + if (use_vosf) { + the_host_buffer = the_buffer; + the_buffer_size = align_on_page_boundary((height + 2) * bytes_per_row); + the_buffer_copy = (uint8 *)malloc(the_buffer_size); + memset(the_buffer_copy, 0, the_buffer_size); + the_buffer = (uint8 *)allocate_framebuffer(the_buffer_size); + memset(the_buffer, 0, the_buffer_size); + } +#elif ENABLE_VOSF + use_vosf = false; +#endif + set_video_monitor(width, height, bytes_per_row, true); -#if REAL_ADDRESSING - VideoMonitor.mac_frame_base = (uint32)the_buffer; +#if REAL_ADDRESSING || DIRECT_ADDRESSING + VideoMonitor.mac_frame_base = Host2MacAddr(the_buffer); #else VideoMonitor.mac_frame_base = MacFrameBaseMac; #endif @@ -575,10 +686,32 @@ static bool init_xf86_dga(int width, int height) bytes_per_row *= 4; break; } + +#if REAL_ADDRESSING || DIRECT_ADDRESSING + // If the blit function is null, i.e. just a copy of the buffer, + // we first try to avoid the allocation of a temporary frame buffer + use_vosf = true; + do_update_framebuffer = GET_FBCOPY_FUNC(depth, true, DISPLAY_DGA); + if (do_update_framebuffer == FBCOPY_FUNC(fbcopy_raw)) + use_vosf = false; + + if (use_vosf) { + the_host_buffer = the_buffer; + the_buffer_size = align_on_page_boundary((height + 2) * bytes_per_row); + the_buffer_copy = (uint8 *)malloc(the_buffer_size); + memset(the_buffer_copy, 0, the_buffer_size); + the_buffer = (uint8 *)allocate_framebuffer(the_buffer_size); + memset(the_buffer, 0, the_buffer_size); + } +#elif ENABLE_VOSF + // The UAE memory handlers will already color conversion, if needed. + use_vosf = false; +#endif + set_video_monitor(width, height, bytes_per_row, true); -#if REAL_ADDRESSING - VideoMonitor.mac_frame_base = (uint32)the_buffer; - MacFrameLayout = FLAYOUT_DIRECT; +#if REAL_ADDRESSING || DIRECT_ADDRESSING + VideoMonitor.mac_frame_base = Host2MacAddr(the_buffer); +// MacFrameLayout = FLAYOUT_DIRECT; #else VideoMonitor.mac_frame_base = MacFrameBaseMac; #endif @@ -654,8 +787,81 @@ static void keycode_init(void) } } +bool VideoInitBuffer() +{ +#ifdef ENABLE_VOSF + if (use_vosf) { + const uint32 page_size = getpagesize(); + const uint32 page_mask = page_size - 1; + + mainBuffer.memBase = (uint32) the_buffer; + // Align the frame buffer on page boundary + mainBuffer.memStart = (uint32)((((unsigned long) the_buffer) + page_mask) & ~page_mask); + mainBuffer.memLength = the_buffer_size; + mainBuffer.memEnd = mainBuffer.memStart + mainBuffer.memLength; + + mainBuffer.pageSize = page_size; + mainBuffer.pageCount = (mainBuffer.memLength + page_mask)/mainBuffer.pageSize; + mainBuffer.pageBits = int( log(mainBuffer.pageSize) / log(2.0) ); + + if (mainBuffer.dirtyPages != 0) + free(mainBuffer.dirtyPages); + + mainBuffer.dirtyPages = (uint8 *) malloc(mainBuffer.pageCount); + + if (mainBuffer.pageInfo != 0) + free(mainBuffer.pageInfo); + + mainBuffer.pageInfo = (ScreenPageInfo *) malloc(mainBuffer.pageCount * sizeof(ScreenPageInfo)); + + if ((mainBuffer.dirtyPages == 0) || (mainBuffer.pageInfo == 0)) + return false; + + PFLAG_CLEAR_ALL; + + uint32 a = 0; + for (int i = 0; i < mainBuffer.pageCount; i++) { + int y1 = a / VideoMonitor.bytes_per_row; + if (y1 >= VideoMonitor.y) + y1 = VideoMonitor.y - 1; + + int y2 = (a + mainBuffer.pageSize) / VideoMonitor.bytes_per_row; + if (y2 >= VideoMonitor.y) + y2 = VideoMonitor.y - 1; + + mainBuffer.pageInfo[i].top = y1; + mainBuffer.pageInfo[i].bottom = y2; + + a += mainBuffer.pageSize; + if (a > mainBuffer.memLength) + a = mainBuffer.memLength; + } + + // We can now write-protect the frame buffer + if (mprotect((caddr_t)mainBuffer.memStart, mainBuffer.memLength, PROT_READ) != 0) + return false; + } +#endif + return true; +} + bool VideoInit(bool classic) { +#ifdef ENABLE_VOSF + // Open /dev/zero + zero_fd = open("/dev/zero", O_RDWR); + if (zero_fd < 0) { + char str[256]; + sprintf(str, GetString(STR_NO_DEV_ZERO_ERR), strerror(errno)); + ErrorAlert(str); + return false; + } + + // Zero the mainBuffer structure + mainBuffer.dirtyPages = 0; + mainBuffer.pageInfo = 0; +#endif + // Check if X server runs on local machine local_X11 = (strncmp(XDisplayName(x_display_name), ":", 1) == 0) || (strncmp(XDisplayName(x_display_name), "unix:", 5) == 0); @@ -807,7 +1013,7 @@ bool VideoInit(bool classic) pthread_mutex_lock(&frame_buffer_lock); #endif -#if !REAL_ADDRESSING +#if !REAL_ADDRESSING && !DIRECT_ADDRESSING // Set variables for UAE memory mapping MacFrameBaseHost = the_buffer; MacFrameSize = VideoMonitor.bytes_per_row * VideoMonitor.y; @@ -817,6 +1023,27 @@ bool VideoInit(bool classic) MacFrameLayout = FLAYOUT_NONE; #endif +#ifdef ENABLE_VOSF + if (use_vosf) { + // Initialize the mainBuffer structure + if (!VideoInitBuffer()) { + // TODO: STR_VOSF_INIT_ERR ? + ErrorAlert("Could not initialize Video on SEGV signals"); + return false; + } + + // Initialize the handler for SIGSEGV + if (!Screen_fault_handler_init()) { + // TODO: STR_VOSF_INIT_ERR ? + ErrorAlert("Could not initialize Video on SEGV signals"); + return false; + } + } +#endif + + // Initialize VideoRefresh function + VideoRefreshInit(); + XSync(x_display, false); #ifdef HAVE_PTHREADS @@ -885,17 +1112,51 @@ void VideoExit(void) XFreeColormap(x_display, cmap[0]); XFreeColormap(x_display, cmap[1]); } + + if (!use_vosf) { + if (the_buffer) { + free(the_buffer); + the_buffer = NULL; + } - if (the_buffer) { - free(the_buffer); - the_buffer = NULL; + if (!have_shm && the_buffer_copy) { + free(the_buffer_copy); + the_buffer_copy = NULL; + } + } +#ifdef ENABLE_VOSF + else { + if (the_buffer != (uint8 *)MAP_FAILED) { + munmap((caddr_t)the_buffer, the_buffer_size); + the_buffer = 0; + } + + if (the_buffer_copy != (uint8 *)MAP_FAILED) { + munmap((caddr_t)the_buffer_copy, the_buffer_size); + the_buffer_copy = 0; + } + } +#endif + } + +#ifdef ENABLE_VOSF + if (use_vosf) { + // Clear mainBuffer data + if (mainBuffer.pageInfo) { + free(mainBuffer.pageInfo); + mainBuffer.pageInfo = 0; } - if (!have_shm && the_buffer_copy) { - free(the_buffer_copy); - the_buffer_copy = NULL; + if (mainBuffer.dirtyPages) { + free(mainBuffer.dirtyPages); + mainBuffer.dirtyPages = 0; } } + + // Close /dev/zero + if (zero_fd > 0) + close(zero_fd); +#endif } @@ -1030,7 +1291,24 @@ static void resume_emul(void) // Restore frame buffer if (fb_save) { +#if REAL_ADDRESSING || DIRECT_ADDRESSING + if (use_vosf) + mprotect((caddr_t)mainBuffer.memStart, mainBuffer.memLength, PROT_READ|PROT_WRITE); +#endif memcpy(the_buffer, fb_save, VideoMonitor.y * VideoMonitor.bytes_per_row); +#if REAL_ADDRESSING || DIRECT_ADDRESSING + if (use_vosf) { + mprotect((caddr_t)mainBuffer.memStart, mainBuffer.memLength, PROT_READ); + do_update_framebuffer(the_host_buffer, the_buffer, VideoMonitor.x * VideoMonitor.bytes_per_row); +#ifdef HAVE_PTHREADS + pthread_mutex_lock(&Screen_draw_lock); +#endif + PFLAG_CLEAR_ALL; +#ifdef HAVE_PTHREADS + pthread_mutex_unlock(&Screen_draw_lock); +#endif + } +#endif free(fb_save); fb_save = NULL; } @@ -1311,6 +1589,25 @@ static void handle_events(void) // Hidden parts exposed, force complete refresh of window case Expose: if (display_type == DISPLAY_WINDOW) { +#ifdef ENABLE_VOSF + const XExposeEvent & xev = event.xexpose; + const uint32 start = xev.y * VideoMonitor.bytes_per_row + xev.x; + const uint32 end = (xev.y + xev.height - 1) * VideoMonitor.bytes_per_row + (xev.x + xev.width); + int page = start >> mainBuffer.pageBits; + uint32 addr = start; + while (addr < end) { + memset(the_buffer_copy + addr, 0, mainBuffer.pageSize); + addr += mainBuffer.pageSize; +#ifdef HAVE_PTHREADS + pthread_mutex_lock(&Screen_draw_lock); +#endif + PFLAG_SET(page); +#ifdef HAVE_PTHREADS + pthread_mutex_unlock(&Screen_draw_lock); +#endif + ++page; + } +#else if (frame_skip == 0) { // Dynamic refresh int x1, y1; for (y1=0; y1<16; y1++) @@ -1319,6 +1616,7 @@ static void handle_events(void) nr_boxes = 16 * 16; } else memset(the_buffer_copy, 0, VideoMonitor.bytes_per_row * VideoMonitor.y); +#endif /* ENABLE_VOSF */ } break; } @@ -1535,10 +1833,202 @@ static void update_display_static(void) } +/* + * Screen refresh functions + */ + +// The specialisations hereunder are meant to enable VOSF with DGA in direct +// addressing mode in case the address spaces (RAM, ROM, FrameBuffer) could +// not get mapped correctly with respect to the predetermined host frame +// buffer base address. +// +// Hmm, in other words, when in direct addressing mode and DGA is requested, +// we first try to "triple allocate" the address spaces according to the real +// host frame buffer address. Then, if it fails, we will use a temporary +// frame buffer thus making the real host frame buffer updated when pages +// of the temp frame buffer are altered. +// +// As a side effect, a little speed gain in screen updates could be noticed +// for other modes than DGA. +// +// The following two functions below are inline so that a clever compiler +// could specialise the code according to the current screen depth and +// display type. A more clever compiler would the job by itself though... +// (update_display_vosf is inlined as well) + +static inline void possibly_quit_dga_mode() +{ +#if defined(ENABLE_XF86_DGA) || defined(ENABLE_FBDEV_DGA) + // Quit DGA mode if requested + if (quit_full_screen) { + quit_full_screen = false; +#ifdef ENABLE_XF86_DGA + XF86DGADirectVideo(x_display, screen, 0); +#endif + XUngrabPointer(x_display, CurrentTime); + XUngrabKeyboard(x_display, CurrentTime); + XUnmapWindow(x_display, the_win); + XSync(x_display, false); + } +#endif +} + +static inline void handle_palette_changes(int depth, int display_type) +{ +#ifdef HAVE_PTHREADS + pthread_mutex_lock(&palette_lock); +#endif + if (palette_changed) { + palette_changed = false; + if (depth == 8) { + XStoreColors(x_display, cmap[0], palette, 256); + XStoreColors(x_display, cmap[1], palette, 256); + +#ifdef ENABLE_XF86_DGA + if (display_type == DISPLAY_DGA) { + current_dga_cmap ^= 1; + XF86DGAInstallColormap(x_display, screen, cmap[current_dga_cmap]); + } +#endif + } + } +#ifdef HAVE_PTHREADS + pthread_mutex_unlock(&palette_lock); +#endif +} + +static void video_refresh_dga(void) +{ + // Quit DGA mode if requested + possibly_quit_dga_mode(); + + // Handle X events + handle_events(); + + // Handle palette changes + handle_palette_changes(depth, DISPLAY_DGA); +} + +#if REAL_ADDRESSING || DIRECT_ADDRESSING +static void video_refresh_dga_vosf(void) +{ + // Quit DGA mode if requested + possibly_quit_dga_mode(); + + // Handle X events + handle_events(); + + // Handle palette changes + handle_palette_changes(depth, DISPLAY_DGA); + + // Update display (VOSF variant) + static int tick_counter = 0; + if (++tick_counter >= frame_skip) { + tick_counter = 0; +#ifdef HAVE_PTHREADS + pthread_mutex_lock(&Screen_draw_lock); +#endif + update_display_dga_vosf(); +#ifdef HAVE_PTHREADS + pthread_mutex_unlock(&Screen_draw_lock); +#endif + } +} +#endif + +#ifdef ENABLE_VOSF +static void video_refresh_window_vosf(void) +{ + // Quit DGA mode if requested + possibly_quit_dga_mode(); + + // Handle X events + handle_events(); + + // Handle palette changes + handle_palette_changes(depth, DISPLAY_WINDOW); + + // Update display (VOSF variant) + static int tick_counter = 0; + if (++tick_counter >= frame_skip) { + tick_counter = 0; +#ifdef HAVE_PTHREADS + pthread_mutex_lock(&Screen_draw_lock); +#endif + update_display_window_vosf(); +#ifdef HAVE_PTHREADS + pthread_mutex_unlock(&Screen_draw_lock); +#endif + } +} +#endif + +static void video_refresh_window_static(void) +{ + // Handle X events + handle_events(); + + // Handle_palette changes + handle_palette_changes(depth, DISPLAY_WINDOW); + + // Update display (static variant) + static int tick_counter = 0; + if (++tick_counter >= frame_skip) { + tick_counter = 0; + update_display_static(); + } +} + +static void video_refresh_window_dynamic(void) +{ + // Handle X events + handle_events(); + + // Handle_palette changes + handle_palette_changes(depth, DISPLAY_WINDOW); + + // Update display (dynamic variant) + static int tick_counter = 0; + tick_counter++; + update_display_dynamic(tick_counter); +} + + /* * Thread for screen refresh, input handling etc. */ +void VideoRefreshInit(void) +{ + // TODO: set up specialised 8bpp VideoRefresh handlers ? + if (display_type == DISPLAY_DGA) { +#if REAL_ADDRESSING || DIRECT_ADDRESSING + if (use_vosf) + video_refresh = video_refresh_dga_vosf; + else +#endif + video_refresh = video_refresh_dga; + } + else { +#ifdef ENABLE_VOSF + if (use_vosf) + video_refresh = video_refresh_window_vosf; + else +#endif + if (frame_skip == 0) + video_refresh = video_refresh_window_dynamic; + else + video_refresh = video_refresh_window_static; + } +} + +void VideoRefresh(void) +{ + // TODO: make main_unix/VideoRefresh call directly video_refresh() ? + video_refresh(); +} + +#if 0 void VideoRefresh(void) { #if defined(ENABLE_XF86_DGA) || defined(ENABLE_FBDEV_DGA) @@ -1594,25 +2084,27 @@ void VideoRefresh(void) } } } +#endif #ifdef HAVE_PTHREADS static void *redraw_func(void *arg) { -uint64 start = GetTicks_usec(); -int64 ticks = 0; + uint64 start = GetTicks_usec(); + int64 ticks = 0; uint64 next = GetTicks_usec(); while (!redraw_thread_cancel) { - VideoRefresh(); +// VideoRefresh(); + video_refresh(); next += 16667; int64 delay = next - GetTicks_usec(); if (delay > 0) Delay_usec(delay); else if (delay < -16667) next = GetTicks_usec(); -ticks++; + ticks++; } -uint64 end = GetTicks_usec(); -printf("%Ld ticks in %Ld usec = %Ld ticks/sec\n", ticks, end - start, (end - start) / ticks); + uint64 end = GetTicks_usec(); + printf("%Ld ticks in %Ld usec = %Ld ticks/sec\n", ticks, end - start, (end - start) / ticks); return NULL; } #endif