arch/all-pc/boot/grub2-aros/grub-core/video/radeon_yeeloong3a.c

   1 /*
   2  *  GRUB  --  GRand Unified Bootloader
   3  *  Copyright (C) 2005,2006,2007,2008,2009,2010,2011,2013  Free Software Foundation, Inc.
   4  *
   5  *  GRUB is free software: you can redistribute it and/or modify
   6  *  it under the terms of the GNU General Public License as published by
   7  *  the Free Software Foundation, either version 3 of the License, or
   8  *  (at your option) any later version.
   9  *
  10  *  GRUB is distributed in the hope that it will be useful,
  11  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  *  GNU General Public License for more details.
  14  *
  15  *  You should have received a copy of the GNU General Public License
  16  *  along with GRUB.  If not, see <http://www.gnu.org/licenses/>.
  17  */
  18
  19 #define grub_video_render_target grub_video_fbrender_target
  20
  21 #include <grub/err.h>
  22 #include <grub/types.h>
  23 #include <grub/dl.h>
  24 #include <grub/misc.h>
  25 #include <grub/mm.h>
  26 #include <grub/video.h>
  27 #include <grub/video_fb.h>
  28 #include <grub/pci.h>
  29 #include <grub/vga.h>
  30
  31 #define GRUB_RADEON_YEELOONG3A_TOTAL_MEMORY_SPACE 1048576
  32
  33 static struct
  34 {
  35   struct grub_video_mode_info mode_info;
  36   struct grub_video_render_target *render_target;
  37
  38   grub_uint8_t *ptr;
  39   int mapped;
  40   grub_uint32_t base;
  41   grub_pci_device_t dev;
  42 } framebuffer;
  43
  44 static grub_err_t
  45 grub_video_radeon_yeeloong3a_video_init (void)
  46 {
  47   /* Reset frame buffer.  */
  48   grub_memset (&framebuffer, 0, sizeof(framebuffer));
  49
  50   return grub_video_fb_init ();
  51 }
  52
  53 static grub_err_t
  54 grub_video_radeon_yeeloong3a_video_fini (void)
  55 {
  56   if (framebuffer.mapped)
  57     grub_pci_device_unmap_range (framebuffer.dev, framebuffer.ptr,
  58                                  GRUB_RADEON_YEELOONG3A_TOTAL_MEMORY_SPACE);
  59   return grub_video_fb_fini ();
  60 }
  61
  62 #ifndef TEST
  63 /* Helper for grub_video_radeon_yeeloong3a_setup.  */
  64 static int
  65 find_card (grub_pci_device_t dev, grub_pci_id_t pciid, void *data)
  66 {
  67   int *found = data;
  68   grub_pci_address_t addr;
  69   grub_uint32_t class;
  70
  71   addr = grub_pci_make_address (dev, GRUB_PCI_REG_CLASS);
  72   class = grub_pci_read (addr);
  73
  74   if (((class >> 16) & 0xffff) != GRUB_PCI_CLASS_SUBCLASS_VGA
  75       || pciid != 0x96151002)
  76     return 0;
  77
  78   *found = 1;
  79
  80   addr = grub_pci_make_address (dev, GRUB_PCI_REG_ADDRESS_REG0);
  81   framebuffer.base = grub_pci_read (addr);
  82   framebuffer.dev = dev;
  83
  84   return 1;
  85 }
  86 #endif
  87
  88 static grub_err_t
  89 grub_video_radeon_yeeloong3a_setup (unsigned int width, unsigned int height,
  90                         unsigned int mode_type, unsigned int mode_mask __attribute__ ((unused)))
  91 {
  92   int depth;
  93   grub_err_t err;
  94   int found = 0;
  95
  96 #ifndef TEST
  97   /* Decode depth from mode_type.  If it is zero, then autodetect.  */
  98   depth = (mode_type & GRUB_VIDEO_MODE_TYPE_DEPTH_MASK)
  99           >> GRUB_VIDEO_MODE_TYPE_DEPTH_POS;
 100
 101   if ((width != 800 && width != 0) || (height != 600 && height != 0)
 102       || (depth != 16 && depth != 0))
 103     return grub_error (GRUB_ERR_NOT_IMPLEMENTED_YET,
 104                        "Only 640x480x16 is supported");
 105
 106   grub_pci_iterate (find_card, &found);
 107   if (!found)
 108     return grub_error (GRUB_ERR_IO, "Couldn't find graphics card");
 109 #endif
 110   /* Fill mode info details.  */
 111   framebuffer.mode_info.width = 800;
 112   framebuffer.mode_info.height = 600;
 113   framebuffer.mode_info.mode_type = GRUB_VIDEO_MODE_TYPE_RGB;
 114   framebuffer.mode_info.bpp = 16;
 115   framebuffer.mode_info.bytes_per_pixel = 2;
 116   framebuffer.mode_info.pitch = 800 * 2;
 117   framebuffer.mode_info.number_of_colors = 256;
 118   framebuffer.mode_info.red_mask_size = 5;
 119   framebuffer.mode_info.red_field_pos = 11;
 120   framebuffer.mode_info.green_mask_size = 6;
 121   framebuffer.mode_info.green_field_pos = 5;
 122   framebuffer.mode_info.blue_mask_size = 5;
 123   framebuffer.mode_info.blue_field_pos = 0;
 124   framebuffer.mode_info.reserved_mask_size = 0;
 125   framebuffer.mode_info.reserved_field_pos = 0;
 126 #ifndef TEST
 127   framebuffer.mode_info.blit_format
 128     = grub_video_get_blit_format (&framebuffer.mode_info);
 129 #endif
 130
 131   /* We can safely discard volatile attribute.  */
 132 #ifndef TEST
 133   framebuffer.ptr = (void *) grub_pci_device_map_range (framebuffer.dev,
 134                                                         framebuffer.base,
 135                                                         GRUB_RADEON_YEELOONG3A_TOTAL_MEMORY_SPACE);
 136   framebuffer.mapped = 1;
 137 #endif
 138
 139   /* Prevent garbage from appearing on the screen.  */
 140   grub_memset (framebuffer.ptr, 0,
 141                framebuffer.mode_info.height * framebuffer.mode_info.pitch);
 142
 143 #ifndef TEST
 144   err = grub_video_fb_create_render_target_from_pointer (&framebuffer
 145                                                          .render_target,
 146                                                          &framebuffer.mode_info,
 147                                                          framebuffer.ptr);
 148
 149   if (err)
 150     return err;
 151
 152   err = grub_video_fb_set_active_render_target (framebuffer.render_target);
 153
 154   if (err)
 155     return err;
 156
 157   /* Copy default palette to initialize emulated palette.  */
 158   err = grub_video_fb_set_palette (0, GRUB_VIDEO_FBSTD_NUMCOLORS,
 159                                    grub_video_fbstd_colors);
 160 #endif
 161   return err;
 162 }
 163
 164 static grub_err_t
 165 grub_video_radeon_yeeloong3a_swap_buffers (void)
 166 {
 167   /* TODO: Implement buffer swapping.  */
 168   return GRUB_ERR_NONE;
 169 }
 170
 171 static grub_err_t
 172 grub_video_radeon_yeeloong3a_set_active_render_target (struct grub_video_render_target *target)
 173 {
 174   if (target == GRUB_VIDEO_RENDER_TARGET_DISPLAY)
 175     target = framebuffer.render_target;
 176
 177   return grub_video_fb_set_active_render_target (target);
 178 }
 179
 180 static grub_err_t
 181 grub_video_radeon_yeeloong3a_get_info_and_fini (struct grub_video_mode_info *mode_info,
 182                                     void **framebuf)
 183 {
 184   grub_memcpy (mode_info, &(framebuffer.mode_info), sizeof (*mode_info));
 185   *framebuf = (char *) framebuffer.ptr;
 186
 187   grub_video_fb_fini ();
 188
 189   return GRUB_ERR_NONE;
 190 }
 191
 192 static struct grub_video_adapter grub_video_radeon_yeeloong3a_adapter =
 193   {
 194     .name = "RADEON (Yeeloong3a) Video Driver",
 195     .id = GRUB_VIDEO_DRIVER_RADEON_YEELOONG3A,
 196
 197     .prio = GRUB_VIDEO_ADAPTER_PRIO_NATIVE,
 198
 199     .init = grub_video_radeon_yeeloong3a_video_init,
 200     .fini = grub_video_radeon_yeeloong3a_video_fini,
 201     .setup = grub_video_radeon_yeeloong3a_setup,
 202     .get_info = grub_video_fb_get_info,
 203     .get_info_and_fini = grub_video_radeon_yeeloong3a_get_info_and_fini,
 204     .set_palette = grub_video_fb_set_palette,
 205     .get_palette = grub_video_fb_get_palette,
 206     .set_viewport = grub_video_fb_set_viewport,
 207     .get_viewport = grub_video_fb_get_viewport,
 208     .set_region = grub_video_fb_set_region,
 209     .get_region = grub_video_fb_get_region,
 210     .set_area_status = grub_video_fb_set_area_status,
 211     .get_area_status = grub_video_fb_get_area_status,
 212     .map_color = grub_video_fb_map_color,
 213     .map_rgb = grub_video_fb_map_rgb,
 214     .map_rgba = grub_video_fb_map_rgba,
 215     .unmap_color = grub_video_fb_unmap_color,
 216     .fill_rect = grub_video_fb_fill_rect,
 217     .blit_bitmap = grub_video_fb_blit_bitmap,
 218     .blit_render_target = grub_video_fb_blit_render_target,
 219     .scroll = grub_video_fb_scroll,
 220     .swap_buffers = grub_video_radeon_yeeloong3a_swap_buffers,
 221     .create_render_target = grub_video_fb_create_render_target,
 222     .delete_render_target = grub_video_fb_delete_render_target,
 223     .set_active_render_target = grub_video_radeon_yeeloong3a_set_active_render_target,
 224     .get_active_render_target = grub_video_fb_get_active_render_target,
 225
 226     .next = 0
 227   };
 228
 229 GRUB_MOD_INIT(video_radeon_yeeloong3a)
 230 {
 231   grub_video_register (&grub_video_radeon_yeeloong3a_adapter);
 232 }
 233
 234 GRUB_MOD_FINI(video_radeon_yeeloong3a)
 235 {
 236   grub_video_unregister (&grub_video_radeon_yeeloong3a_adapter);
 237 }