2 * Copyright © 2007 David Airlie
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
21 * DEALINGS IN THE SOFTWARE.
30 #include <linux/module.h>
36 #include "drm_crtc_helper.h"
37 #include "radeon_drm.h"
40 #include "drm_fb_helper.h"
42 struct radeon_fb_device {
43 struct drm_fb_helper helper;
44 struct radeon_framebuffer *rfb;
45 struct radeon_device *rdev;
48 static struct fb_ops radeonfb_ops = {
50 .fb_check_var = drm_fb_helper_check_var,
51 .fb_set_par = drm_fb_helper_set_par,
52 .fb_setcolreg = drm_fb_helper_setcolreg,
53 .fb_fillrect = cfb_fillrect,
54 .fb_copyarea = cfb_copyarea,
55 .fb_imageblit = cfb_imageblit,
56 .fb_pan_display = drm_fb_helper_pan_display,
57 .fb_blank = drm_fb_helper_blank,
61 * Curretly it is assumed that the old framebuffer is reused.
64 * caller should hold the mode config lock.
67 int radeonfb_resize(struct drm_device *dev, struct drm_crtc *crtc)
70 struct drm_framebuffer *fb;
71 struct drm_display_mode *mode = crtc->desired_mode;
84 info->var.xres = mode->hdisplay;
85 info->var.right_margin = mode->hsync_start - mode->hdisplay;
86 info->var.hsync_len = mode->hsync_end - mode->hsync_start;
87 info->var.left_margin = mode->htotal - mode->hsync_end;
88 info->var.yres = mode->vdisplay;
89 info->var.lower_margin = mode->vsync_start - mode->vdisplay;
90 info->var.vsync_len = mode->vsync_end - mode->vsync_start;
91 info->var.upper_margin = mode->vtotal - mode->vsync_end;
92 info->var.pixclock = 10000000 / mode->htotal * 1000 / mode->vtotal * 100;
94 info->var.pixclock = info->var.pixclock * 1000 / mode->vrefresh;
98 EXPORT_SYMBOL(radeonfb_resize);
100 static int radeon_align_pitch(struct radeon_device *rdev, int width, int bpp, bool tiled)
103 int align_large = (ASIC_IS_AVIVO(rdev)) || tiled;
108 pitch_mask = align_large ? 255 : 127;
111 pitch_mask = align_large ? 127 : 31;
115 pitch_mask = align_large ? 63 : 15;
119 aligned += pitch_mask;
120 aligned &= ~pitch_mask;
124 static struct drm_fb_helper_funcs radeon_fb_helper_funcs = {
125 .gamma_set = radeon_crtc_fb_gamma_set,
128 int radeonfb_create(struct drm_device *dev,
129 uint32_t fb_width, uint32_t fb_height,
130 uint32_t surface_width, uint32_t surface_height,
131 uint32_t surface_depth, uint32_t surface_bpp,
132 struct drm_framebuffer **fb_p)
134 struct radeon_device *rdev = dev->dev_private;
135 struct fb_info *info;
136 struct radeon_fb_device *rfbdev;
137 struct drm_framebuffer *fb = NULL;
138 struct radeon_framebuffer *rfb;
139 struct drm_mode_fb_cmd mode_cmd;
140 struct drm_gem_object *gobj = NULL;
141 struct radeon_object *robj = NULL;
142 struct device *device = &rdev->pdev->dev;
143 int size, aligned_size, ret;
147 bool fb_tiled = false; /* useful for testing */
148 u32 tiling_flags = 0;
150 mode_cmd.width = surface_width;
151 mode_cmd.height = surface_height;
152 mode_cmd.bpp = surface_bpp;
153 /* need to align pitch with crtc limits */
154 mode_cmd.pitch = radeon_align_pitch(rdev, mode_cmd.width, mode_cmd.bpp, fb_tiled) * ((mode_cmd.bpp + 1) / 8);
155 mode_cmd.depth = surface_depth;
157 size = mode_cmd.pitch * mode_cmd.height;
158 aligned_size = ALIGN(size, PAGE_SIZE);
160 ret = radeon_gem_object_create(rdev, aligned_size, 0,
161 RADEON_GEM_DOMAIN_VRAM,
162 false, ttm_bo_type_kernel,
165 printk(KERN_ERR "failed to allocate framebuffer (%d %d)\n",
166 surface_width, surface_height);
170 robj = gobj->driver_private;
173 tiling_flags = RADEON_TILING_MACRO;
176 switch (mode_cmd.bpp) {
178 tiling_flags |= RADEON_TILING_SWAP_32BIT;
181 tiling_flags |= RADEON_TILING_SWAP_16BIT;
188 radeon_object_set_tiling_flags(robj, tiling_flags | RADEON_TILING_SURFACE, mode_cmd.pitch);
189 mutex_lock(&rdev->ddev->struct_mutex);
190 fb = radeon_framebuffer_create(rdev->ddev, &mode_cmd, gobj);
192 DRM_ERROR("failed to allocate fb.\n");
196 ret = radeon_object_pin(robj, RADEON_GEM_DOMAIN_VRAM, &fb_gpuaddr);
198 printk(KERN_ERR "failed to pin framebuffer\n");
203 list_add(&fb->filp_head, &rdev->ddev->mode_config.fb_kernel_list);
206 rfb = to_radeon_framebuffer(fb);
207 rdev->fbdev_rfb = rfb;
208 rdev->fbdev_robj = robj;
210 info = framebuffer_alloc(sizeof(struct radeon_fb_device), device);
216 rdev->fbdev_info = info;
218 rfbdev->helper.funcs = &radeon_fb_helper_funcs;
219 rfbdev->helper.dev = dev;
220 ret = drm_fb_helper_init_crtc_count(&rfbdev->helper, 2,
221 RADEONFB_CONN_LIMIT);
226 radeon_object_check_tiling(robj, 0, 0);
228 ret = radeon_object_kmap(robj, &fbptr);
233 memset_io(fbptr, 0, aligned_size);
235 strcpy(info->fix.id, "radeondrmfb");
237 drm_fb_helper_fill_fix(info, fb->pitch);
239 info->flags = FBINFO_DEFAULT;
240 info->fbops = &radeonfb_ops;
242 tmp = fb_gpuaddr - rdev->mc.vram_location;
243 info->fix.smem_start = rdev->mc.aper_base + tmp;
244 info->fix.smem_len = size;
245 info->screen_base = fbptr;
246 info->screen_size = size;
248 drm_fb_helper_fill_var(info, fb, fb_width, fb_height);
250 /* setup aperture base/size for vesafb takeover */
251 info->aperture_base = rdev->ddev->mode_config.fb_base;
252 info->aperture_size = rdev->mc.real_vram_size;
254 info->fix.mmio_start = 0;
255 info->fix.mmio_len = 0;
256 info->pixmap.size = 64*1024;
257 info->pixmap.buf_align = 8;
258 info->pixmap.access_align = 32;
259 info->pixmap.flags = FB_PIXMAP_SYSTEM;
260 info->pixmap.scan_align = 1;
261 if (info->screen_base == NULL) {
265 DRM_INFO("fb mappable at 0x%lX\n", info->fix.smem_start);
266 DRM_INFO("vram apper at 0x%lX\n", (unsigned long)rdev->mc.aper_base);
267 DRM_INFO("size %lu\n", (unsigned long)size);
268 DRM_INFO("fb depth is %d\n", fb->depth);
269 DRM_INFO(" pitch is %d\n", fb->pitch);
275 mutex_unlock(&rdev->ddev->struct_mutex);
280 radeon_object_kunmap(robj);
283 list_del(&fb->filp_head);
284 drm_gem_object_unreference(gobj);
285 drm_framebuffer_cleanup(fb);
288 drm_gem_object_unreference(gobj);
289 mutex_unlock(&rdev->ddev->struct_mutex);
294 static char *mode_option;
295 int radeon_parse_options(char *options)
299 if (!options || !*options)
302 while ((this_opt = strsep(&options, ",")) != NULL) {
305 mode_option = this_opt;
310 int radeonfb_probe(struct drm_device *dev)
312 return drm_fb_helper_single_fb_probe(dev, &radeonfb_create);
315 int radeonfb_remove(struct drm_device *dev, struct drm_framebuffer *fb)
317 struct fb_info *info;
318 struct radeon_framebuffer *rfb = to_radeon_framebuffer(fb);
319 struct radeon_object *robj;
326 struct radeon_fb_device *rfbdev = info->par;
327 robj = rfb->obj->driver_private;
328 unregister_framebuffer(info);
329 radeon_object_kunmap(robj);
330 radeon_object_unpin(robj);
331 drm_fb_helper_free(&rfbdev->helper);
332 framebuffer_release(info);
335 printk(KERN_INFO "unregistered panic notifier\n");
339 EXPORT_SYMBOL(radeonfb_remove);
340 MODULE_LICENSE("GPL");