merge with mainline
This commit is contained in:
BVK Chaitanya
commit
297f0c2b6e
218 changed files with 35637 additions and 4957 deletions
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@ -40,25 +40,12 @@ static grub_uint32_t last_set_mode = 3;
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static struct
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{
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struct grub_video_mode_info mode_info;
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struct grub_video_render_target *front_target;
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struct grub_video_render_target *back_target;
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unsigned int bytes_per_scan_line;
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unsigned int bytes_per_pixel;
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grub_uint32_t active_vbe_mode;
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grub_uint8_t *ptr;
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int index_color_mode;
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char *offscreen_buffer;
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grub_size_t page_size; /* The size of a page in bytes. */
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/* For page flipping strategy. */
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int displayed_page; /* The page # that is the front buffer. */
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int render_page; /* The page # that is the back buffer. */
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/* Virtual functions. */
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grub_video_fb_doublebuf_update_screen_t update_screen;
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} framebuffer;
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static grub_uint32_t initial_vbe_mode;
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@ -377,7 +364,6 @@ grub_video_vbe_fini (void)
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vbe_mode_list = NULL;
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err = grub_video_fb_fini ();
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grub_free (framebuffer.offscreen_buffer);
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return err;
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}
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@ -387,11 +373,11 @@ grub_video_vbe_fini (void)
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respectively.
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*/
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static grub_err_t
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doublebuf_pageflipping_commit (void)
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doublebuf_pageflipping_set_page (int page)
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{
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/* Tell the video adapter to display the new front page. */
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int display_start_line
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= framebuffer.mode_info.height * framebuffer.displayed_page;
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= framebuffer.mode_info.height * page;
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grub_vbe_status_t vbe_err =
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grub_vbe_bios_set_display_start (0, display_start_line);
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@ -402,164 +388,6 @@ doublebuf_pageflipping_commit (void)
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return 0;
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}
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static grub_err_t
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doublebuf_pageflipping_update_screen (struct grub_video_fbrender_target *front
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__attribute__ ((unused)),
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struct grub_video_fbrender_target *back
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__attribute__ ((unused)))
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{
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int new_displayed_page;
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struct grub_video_fbrender_target *target;
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grub_err_t err;
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/* Swap the page numbers in the framebuffer struct. */
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new_displayed_page = framebuffer.render_page;
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framebuffer.render_page = framebuffer.displayed_page;
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framebuffer.displayed_page = new_displayed_page;
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err = doublebuf_pageflipping_commit ();
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if (err)
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{
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/* Restore previous state. */
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framebuffer.render_page = framebuffer.displayed_page;
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framebuffer.displayed_page = new_displayed_page;
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return err;
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}
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if (framebuffer.mode_info.mode_type & GRUB_VIDEO_MODE_TYPE_UPDATING_SWAP)
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grub_memcpy (framebuffer.ptr + framebuffer.render_page
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* framebuffer.page_size, framebuffer.ptr
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+ framebuffer.displayed_page * framebuffer.page_size,
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framebuffer.page_size);
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target = framebuffer.back_target;
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framebuffer.back_target = framebuffer.front_target;
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framebuffer.front_target = target;
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err = grub_video_fb_get_active_render_target (&target);
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if (err)
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return err;
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if (target == framebuffer.back_target)
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err = grub_video_fb_set_active_render_target (framebuffer.front_target);
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else if (target == framebuffer.front_target)
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err = grub_video_fb_set_active_render_target (framebuffer.back_target);
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return err;
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}
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static grub_err_t
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doublebuf_pageflipping_init (void)
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{
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/* Get video RAM size in bytes. */
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grub_size_t vram_size = controller_info.total_memory << 16;
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grub_err_t err;
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framebuffer.page_size =
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framebuffer.mode_info.pitch * framebuffer.mode_info.height;
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if (2 * framebuffer.page_size > vram_size)
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return grub_error (GRUB_ERR_OUT_OF_MEMORY,
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"Not enough video memory for double buffering.");
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framebuffer.displayed_page = 0;
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framebuffer.render_page = 1;
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framebuffer.update_screen = doublebuf_pageflipping_update_screen;
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err = grub_video_fb_create_render_target_from_pointer (&framebuffer.front_target, &framebuffer.mode_info, framebuffer.ptr);
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if (err)
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return err;
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err = grub_video_fb_create_render_target_from_pointer (&framebuffer.back_target, &framebuffer.mode_info, framebuffer.ptr + framebuffer.page_size);
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if (err)
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{
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grub_video_fb_delete_render_target (framebuffer.front_target);
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return err;
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}
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/* Set the framebuffer memory data pointer and display the right page. */
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err = doublebuf_pageflipping_commit ();
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if (err)
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{
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grub_video_fb_delete_render_target (framebuffer.front_target);
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grub_video_fb_delete_render_target (framebuffer.back_target);
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return err;
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}
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return GRUB_ERR_NONE;
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}
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/* Select the best double buffering mode available. */
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static grub_err_t
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double_buffering_init (unsigned int mode_type, unsigned int mode_mask)
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{
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grub_err_t err;
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int updating_swap_needed;
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updating_swap_needed
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= grub_video_check_mode_flag (mode_type, mode_mask,
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GRUB_VIDEO_MODE_TYPE_UPDATING_SWAP, 0);
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/* Do double buffering only if it's either requested or efficient. */
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if (grub_video_check_mode_flag (mode_type, mode_mask,
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GRUB_VIDEO_MODE_TYPE_DOUBLE_BUFFERED,
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!updating_swap_needed))
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{
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framebuffer.mode_info.mode_type |= GRUB_VIDEO_MODE_TYPE_DOUBLE_BUFFERED;
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if (updating_swap_needed)
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framebuffer.mode_info.mode_type |= GRUB_VIDEO_MODE_TYPE_UPDATING_SWAP;
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err = doublebuf_pageflipping_init ();
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if (!err)
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return GRUB_ERR_NONE;
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framebuffer.mode_info.mode_type
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&= ~(GRUB_VIDEO_MODE_TYPE_DOUBLE_BUFFERED
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| GRUB_VIDEO_MODE_TYPE_UPDATING_SWAP);
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grub_errno = GRUB_ERR_NONE;
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}
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if (grub_video_check_mode_flag (mode_type, mode_mask,
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GRUB_VIDEO_MODE_TYPE_DOUBLE_BUFFERED,
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0))
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{
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framebuffer.mode_info.mode_type
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|= (GRUB_VIDEO_MODE_TYPE_DOUBLE_BUFFERED
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| GRUB_VIDEO_MODE_TYPE_UPDATING_SWAP);
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err = grub_video_fb_doublebuf_blit_init (&framebuffer.front_target,
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&framebuffer.back_target,
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&framebuffer.update_screen,
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framebuffer.mode_info,
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framebuffer.ptr);
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if (!err)
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return GRUB_ERR_NONE;
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framebuffer.mode_info.mode_type
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&= ~(GRUB_VIDEO_MODE_TYPE_DOUBLE_BUFFERED
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| GRUB_VIDEO_MODE_TYPE_UPDATING_SWAP);
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grub_errno = GRUB_ERR_NONE;
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}
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/* Fall back to no double buffering. */
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err = grub_video_fb_create_render_target_from_pointer (&framebuffer.front_target, &framebuffer.mode_info, framebuffer.ptr);
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if (err)
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return err;
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framebuffer.back_target = framebuffer.front_target;
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framebuffer.update_screen = 0;
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framebuffer.mode_info.mode_type &= ~GRUB_VIDEO_MODE_TYPE_DOUBLE_BUFFERED;
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return GRUB_ERR_NONE;
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}
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static grub_err_t
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grub_video_vbe_setup (unsigned int width, unsigned int height,
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unsigned int mode_type, unsigned int mode_mask)
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@ -684,15 +512,24 @@ grub_video_vbe_setup (unsigned int width, unsigned int height,
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framebuffer.mode_info.blit_format = grub_video_get_blit_format (&framebuffer.mode_info);
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/* Set up double buffering and targets. */
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err = double_buffering_init (mode_type, mode_mask);
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if (err)
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return err;
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{
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/* Get video RAM size in bytes. */
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grub_size_t vram_size = controller_info.total_memory << 16;
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grub_size_t page_size; /* The size of a page in bytes. */
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err = grub_video_fb_set_active_render_target (framebuffer.back_target);
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page_size = framebuffer.mode_info.pitch * framebuffer.mode_info.height;
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if (err)
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return err;
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if (vram_size >= 2 * page_size)
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err = grub_video_fb_setup (mode_type, mode_mask,
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&framebuffer.mode_info,
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framebuffer.ptr,
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doublebuf_pageflipping_set_page,
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framebuffer.ptr + page_size);
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else
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err = grub_video_fb_setup (mode_type, mode_mask,
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&framebuffer.mode_info,
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framebuffer.ptr, 0, 0);
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}
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/* Copy default palette to initialize emulated palette. */
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err = grub_video_fb_set_palette (0, GRUB_VIDEO_FBSTD_NUMCOLORS,
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@ -723,59 +560,13 @@ grub_video_vbe_set_palette (unsigned int start, unsigned int count,
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return grub_video_fb_set_palette (start, count, palette_data);
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}
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static grub_err_t
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grub_video_vbe_swap_buffers (void)
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{
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grub_err_t err;
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if (!framebuffer.update_screen)
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return GRUB_ERR_NONE;
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err = framebuffer.update_screen (framebuffer.front_target,
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framebuffer.back_target);
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if (err)
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return err;
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return GRUB_ERR_NONE;
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}
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static grub_err_t
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grub_video_vbe_set_active_render_target (struct grub_video_render_target *target)
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{
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if (target == GRUB_VIDEO_RENDER_TARGET_DISPLAY)
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target = framebuffer.back_target;
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return grub_video_fb_set_active_render_target (target);
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}
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static grub_err_t
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grub_video_vbe_get_active_render_target (struct grub_video_render_target **target)
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{
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grub_err_t err;
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err = grub_video_fb_get_active_render_target (target);
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if (err)
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return err;
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if (*target == framebuffer.back_target)
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*target = GRUB_VIDEO_RENDER_TARGET_DISPLAY;
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return GRUB_ERR_NONE;
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}
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static grub_err_t
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grub_video_vbe_get_info_and_fini (struct grub_video_mode_info *mode_info,
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void **framebuf)
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{
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grub_memcpy (mode_info, &(framebuffer.mode_info), sizeof (*mode_info));
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*framebuf = (char *) framebuffer.ptr
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+ framebuffer.displayed_page * framebuffer.page_size;
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grub_free (vbe_mode_list);
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vbe_mode_list = NULL;
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grub_video_fb_fini ();
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grub_free (framebuffer.offscreen_buffer);
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return GRUB_ERR_NONE;
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return grub_video_fb_get_info_and_fini (mode_info, framebuf);
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}
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static struct grub_video_adapter grub_video_vbe_adapter =
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@ -783,6 +574,8 @@ static struct grub_video_adapter grub_video_vbe_adapter =
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.name = "VESA BIOS Extension Video Driver",
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.id = GRUB_VIDEO_DRIVER_VBE,
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.prio = GRUB_VIDEO_ADAPTER_PRIO_FIRMWARE,
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.init = grub_video_vbe_init,
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.fini = grub_video_vbe_fini,
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.setup = grub_video_vbe_setup,
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@ -800,11 +593,11 @@ static struct grub_video_adapter grub_video_vbe_adapter =
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.blit_bitmap = grub_video_fb_blit_bitmap,
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.blit_render_target = grub_video_fb_blit_render_target,
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.scroll = grub_video_fb_scroll,
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.swap_buffers = grub_video_vbe_swap_buffers,
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.swap_buffers = grub_video_fb_swap_buffers,
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.create_render_target = grub_video_fb_create_render_target,
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.delete_render_target = grub_video_fb_delete_render_target,
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.set_active_render_target = grub_video_vbe_set_active_render_target,
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.get_active_render_target = grub_video_vbe_get_active_render_target,
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.set_active_render_target = grub_video_fb_set_active_render_target,
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.get_active_render_target = grub_video_fb_get_active_render_target,
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.next = 0
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};
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@ -27,6 +27,7 @@
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#include <grub/types.h>
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#include <grub/dl.h>
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#include <grub/misc.h>
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#include <grub/vga.h>
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#define VGA_WIDTH 640
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#define VGA_HEIGHT 350
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@ -45,58 +46,26 @@ static struct
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int back_page;
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} framebuffer;
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#define SEQUENCER_ADDR_PORT 0x3C4
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#define SEQUENCER_DATA_PORT 0x3C5
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#define MAP_MASK_REGISTER 0x02
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#define CRTC_ADDR_PORT 0x3D4
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#define CRTC_DATA_PORT 0x3D5
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#define START_ADDR_HIGH_REGISTER 0x0C
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#define START_ADDR_LOW_REGISTER 0x0D
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#define GRAPHICS_ADDR_PORT 0x3CE
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#define GRAPHICS_DATA_PORT 0x3CF
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#define READ_MAP_REGISTER 0x04
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#define INPUT_STATUS1_REGISTER 0x3DA
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#define INPUT_STATUS1_VERTR_BIT 0x08
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static inline void
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wait_vretrace (void)
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{
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/* Wait until there is a vertical retrace. */
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while (! (grub_inb (INPUT_STATUS1_REGISTER) & INPUT_STATUS1_VERTR_BIT));
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while (! (grub_inb (GRUB_VGA_IO_INPUT_STATUS1_REGISTER)
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& GRUB_VGA_IO_INPUT_STATUS1_VERTR_BIT));
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}
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/* Get Map Mask Register. */
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static unsigned char
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get_map_mask (void)
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{
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unsigned char old_addr;
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unsigned char old_data;
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old_addr = grub_inb (SEQUENCER_ADDR_PORT);
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grub_outb (MAP_MASK_REGISTER, SEQUENCER_ADDR_PORT);
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old_data = grub_inb (SEQUENCER_DATA_PORT);
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grub_outb (old_addr, SEQUENCER_ADDR_PORT);
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return old_data;
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return grub_vga_sr_read (GRUB_VGA_SR_MAP_MASK_REGISTER);
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}
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/* Set Map Mask Register. */
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static void
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set_map_mask (unsigned char mask)
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{
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unsigned char old_addr;
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old_addr = grub_inb (SEQUENCER_ADDR_PORT);
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grub_outb (MAP_MASK_REGISTER, SEQUENCER_ADDR_PORT);
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grub_outb (mask, SEQUENCER_DATA_PORT);
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grub_outb (old_addr, SEQUENCER_ADDR_PORT);
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grub_vga_sr_write (mask, GRUB_VGA_SR_MAP_MASK_REGISTER);
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}
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#if 0
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@ -104,14 +73,7 @@ set_map_mask (unsigned char mask)
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static void
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set_read_map (unsigned char map)
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{
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unsigned char old_addr;
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old_addr = grub_inb (GRAPHICS_ADDR_PORT);
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grub_outb (READ_MAP_REGISTER, GRAPHICS_ADDR_PORT);
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grub_outb (map, GRAPHICS_DATA_PORT);
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grub_outb (old_addr, GRAPHICS_ADDR_PORT);
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grub_vga_gr_write (map, GRUB_VGA_GR_READ_MAP_REGISTER);
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}
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#endif
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@ -119,17 +81,8 @@ set_read_map (unsigned char map)
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static void
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set_start_address (unsigned int start)
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{
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unsigned char old_addr;
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old_addr = grub_inb (CRTC_ADDR_PORT);
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grub_outb (START_ADDR_LOW_REGISTER, CRTC_ADDR_PORT);
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grub_outb (start & 0xFF, CRTC_DATA_PORT);
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grub_outb (START_ADDR_HIGH_REGISTER, CRTC_ADDR_PORT);
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grub_outb (start >> 8, CRTC_DATA_PORT);
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grub_outb (old_addr, CRTC_ADDR_PORT);
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grub_vga_cr_write (start & 0xFF, GRUB_VGA_CR_START_ADDR_LOW_REGISTER);
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grub_vga_cr_write (start >> 8, GRUB_VGA_CR_START_ADDR_HIGH_REGISTER);
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}
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static int setup = 0;
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@ -375,6 +328,8 @@ static struct grub_video_adapter grub_video_vga_adapter =
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.name = "VGA Video Driver",
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.id = GRUB_VIDEO_DRIVER_VGA,
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.prio = GRUB_VIDEO_ADAPTER_PRIO_FALLBACK,
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.init = grub_video_vga_init,
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.fini = grub_video_vga_fini,
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.setup = grub_video_vga_setup,
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|
|
|
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