--- /dev/null
+/*
+ * GRUB -- GRand Unified Bootloader
+ * Copyright (C) 2005,2006,2007,2008,2009,2010 Free Software Foundation, Inc.
+ *
+ * GRUB is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * GRUB is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with GRUB. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#define grub_video_render_target grub_video_fbrender_target
+
+#include <grub/err.h>
+#include <grub/types.h>
+#include <grub/dl.h>
+#include <grub/misc.h>
+#include <grub/mm.h>
+#include <grub/video.h>
+#include <grub/video_fb.h>
+#include <grub/pci.h>
+#include <grub/vga.h>
+
+#define GRUB_SIS315PRO_PCIID 0x03251039
+#define GRUB_SIS315PRO_TOTAL_MEMORY_SPACE 0x800000
+
+static struct
+{
+ struct grub_video_mode_info mode_info;
+ struct grub_video_render_target *render_target;
+
+ grub_uint8_t *ptr;
+ int mapped;
+ grub_uint32_t base;
+ grub_pci_device_t dev;
+} framebuffer;
+
+#ifndef TEST
+static grub_err_t
+grub_video_sis315pro_video_init (void)
+{
+ /* Reset frame buffer. */
+ grub_memset (&framebuffer, 0, sizeof(framebuffer));
+
+ return grub_video_fb_init ();
+}
+
+static grub_err_t
+grub_video_sis315pro_video_fini (void)
+{
+ if (framebuffer.mapped)
+ grub_pci_device_unmap_range (framebuffer.dev, framebuffer.ptr,
+ GRUB_SIS315PRO_TOTAL_MEMORY_SPACE);
+
+ return grub_video_fb_fini ();
+}
+#endif
+
+static grub_err_t
+grub_video_sis315pro_setup (unsigned int width, unsigned int height,
+ unsigned int mode_type,
+ unsigned int mode_mask __attribute__ ((unused)))
+{
+ int depth;
+ grub_err_t err;
+ int found = 0;
+
+#ifndef TEST
+ auto int NESTED_FUNC_ATTR find_card (grub_pci_device_t dev, grub_pci_id_t pciid __attribute__ ((unused)));
+ int NESTED_FUNC_ATTR find_card (grub_pci_device_t dev, grub_pci_id_t pciid __attribute__ ((unused)))
+ {
+ grub_pci_address_t addr;
+ grub_uint32_t class;
+
+ addr = grub_pci_make_address (dev, GRUB_PCI_REG_CLASS);
+ class = grub_pci_read (addr);
+
+ if (((class >> 16) & 0xffff) != GRUB_PCI_CLASS_SUBCLASS_VGA
+ || pciid != GRUB_SIS315PRO_PCIID)
+ return 0;
+
+ found = 1;
+
+ addr = grub_pci_make_address (dev, GRUB_PCI_REG_ADDRESS_REG0);
+ framebuffer.base = grub_pci_read (addr);
+ framebuffer.dev = dev;
+
+ return 1;
+ }
+
+ /* Decode depth from mode_type. If it is zero, then autodetect. */
+ depth = (mode_type & GRUB_VIDEO_MODE_TYPE_DEPTH_MASK)
+ >> GRUB_VIDEO_MODE_TYPE_DEPTH_POS;
+
+ if ((width != 640 && width != 0) || (height != 400 && height != 0)
+ || (depth != 8 && depth != 0))
+ return grub_error (GRUB_ERR_NOT_IMPLEMENTED_YET,
+ "Only 640x400x8 is supported");
+
+ grub_pci_iterate (find_card);
+ if (!found)
+ return grub_error (GRUB_ERR_IO, "Couldn't find graphics card");
+#endif
+ /* Fill mode info details. */
+ framebuffer.mode_info.width = 640;
+ framebuffer.mode_info.height = 400;
+ framebuffer.mode_info.mode_type = GRUB_VIDEO_MODE_TYPE_INDEX_COLOR;
+ framebuffer.mode_info.bpp = 8;
+ framebuffer.mode_info.bytes_per_pixel = 1;
+ framebuffer.mode_info.pitch = 640 * 1;
+ framebuffer.mode_info.number_of_colors = 256;
+ framebuffer.mode_info.red_mask_size = 0;
+ framebuffer.mode_info.red_field_pos = 0;
+ framebuffer.mode_info.green_mask_size = 0;
+ framebuffer.mode_info.green_field_pos = 0;
+ framebuffer.mode_info.blue_mask_size = 0;
+ framebuffer.mode_info.blue_field_pos = 0;
+ framebuffer.mode_info.reserved_mask_size = 0;
+ framebuffer.mode_info.reserved_field_pos = 0;
+#ifndef TEST
+ framebuffer.mode_info.blit_format
+ = grub_video_get_blit_format (&framebuffer.mode_info);
+#endif
+
+ /* We can safely discard volatile attribute. */
+#ifndef TEST
+ framebuffer.ptr
+ = (void *) grub_pci_device_map_range (framebuffer.dev,
+ framebuffer.base,
+ GRUB_SIS315PRO_TOTAL_MEMORY_SPACE);
+#endif
+ framebuffer.mapped = 1;
+
+#ifndef TEST
+ /* Prevent garbage from appearing on the screen. */
+ grub_memset (framebuffer.ptr, 0,
+ framebuffer.mode_info.height * framebuffer.mode_info.pitch);
+#endif
+
+#ifndef TEST
+ err = grub_video_fb_create_render_target_from_pointer (&framebuffer
+ .render_target,
+ &framebuffer.mode_info,
+ framebuffer.ptr);
+
+ if (err)
+ return err;
+
+ err = grub_video_fb_set_active_render_target (framebuffer.render_target);
+
+ if (err)
+ return err;
+
+ /* Copy default palette to initialize emulated palette. */
+ err = grub_video_fb_set_palette (0, GRUB_VIDEO_FBSTD_NUMCOLORS,
+ grub_video_fbstd_colors);
+#endif
+ return err;
+}
+
+#ifndef TEST
+
+static grub_err_t
+grub_video_sis315pro_swap_buffers (void)
+{
+ /* TODO: Implement buffer swapping. */
+ return GRUB_ERR_NONE;
+}
+
+static grub_err_t
+grub_video_sis315pro_set_active_render_target (struct grub_video_render_target *target)
+{
+ if (target == GRUB_VIDEO_RENDER_TARGET_DISPLAY)
+ target = framebuffer.render_target;
+
+ return grub_video_fb_set_active_render_target (target);
+}
+
+static grub_err_t
+grub_video_sis315pro_get_info_and_fini (struct grub_video_mode_info *mode_info,
+ void **framebuf)
+{
+ grub_memcpy (mode_info, &(framebuffer.mode_info), sizeof (*mode_info));
+ *framebuf = (char *) framebuffer.ptr;
+
+ grub_video_fb_fini ();
+
+ return GRUB_ERR_NONE;
+}
+
+static struct grub_video_adapter grub_video_sis315pro_adapter =
+ {
+ .name = "SIS315PRO Video Driver",
+ .id = GRUB_VIDEO_DRIVER_SIS315PRO,
+
+ .prio = GRUB_VIDEO_ADAPTER_PRIO_NATIVE,
+
+ .init = grub_video_sis315pro_video_init,
+ .fini = grub_video_sis315pro_video_fini,
+ .setup = grub_video_sis315pro_setup,
+ .get_info = grub_video_fb_get_info,
+ .get_info_and_fini = grub_video_sis315pro_get_info_and_fini,
+ .set_palette = grub_video_fb_set_palette,
+ .get_palette = grub_video_fb_get_palette,
+ .set_viewport = grub_video_fb_set_viewport,
+ .get_viewport = grub_video_fb_get_viewport,
+ .map_color = grub_video_fb_map_color,
+ .map_rgb = grub_video_fb_map_rgb,
+ .map_rgba = grub_video_fb_map_rgba,
+ .unmap_color = grub_video_fb_unmap_color,
+ .fill_rect = grub_video_fb_fill_rect,
+ .blit_bitmap = grub_video_fb_blit_bitmap,
+ .blit_render_target = grub_video_fb_blit_render_target,
+ .scroll = grub_video_fb_scroll,
+ .swap_buffers = grub_video_sis315pro_swap_buffers,
+ .create_render_target = grub_video_fb_create_render_target,
+ .delete_render_target = grub_video_fb_delete_render_target,
+ .set_active_render_target = grub_video_sis315pro_set_active_render_target,
+ .get_active_render_target = grub_video_fb_get_active_render_target,
+
+ .next = 0
+ };
+
+GRUB_MOD_INIT(video_sis315pro)
+{
+ grub_video_register (&grub_video_sis315pro_adapter);
+}
+
+GRUB_MOD_FINI(video_sis315pro)
+{
+ grub_video_unregister (&grub_video_sis315pro_adapter);
+}
+#else
+int
+main ()
+{
+ grub_video_sis315pro_setup (640, 400, 0, 0);
+}
+#endif
projects / thirdparty / grub.git / commitdiff
