2 * Copyright © 2013 Red Hat
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
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7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
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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
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21 * DEALINGS IN THE SOFTWARE.
26 #include <linux/module.h>
30 #include <drm/drm_crtc.h>
31 #include <drm/drm_crtc_helper.h>
32 #include <drm/drm_fb_helper.h>
36 #include "qxl_object.h"
38 #define QXL_DIRTY_DELAY (HZ / 30)
41 struct drm_fb_helper helper;
42 struct qxl_framebuffer qfb;
43 struct qxl_device *qdev;
45 spinlock_t delayed_ops_lock;
46 struct list_head delayed_ops;
51 static void qxl_fb_image_init(struct qxl_fb_image *qxl_fb_image,
52 struct qxl_device *qdev, struct fb_info *info,
53 const struct fb_image *image)
55 qxl_fb_image->qdev = qdev;
57 qxl_fb_image->visual = info->fix.visual;
58 if (qxl_fb_image->visual == FB_VISUAL_TRUECOLOR ||
59 qxl_fb_image->visual == FB_VISUAL_DIRECTCOLOR)
60 memcpy(&qxl_fb_image->pseudo_palette,
62 sizeof(qxl_fb_image->pseudo_palette));
65 if (image->depth == 1)
66 qxl_fb_image->visual = FB_VISUAL_MONO10;
68 qxl_fb_image->visual = FB_VISUAL_DIRECTCOLOR;
71 memcpy(&qxl_fb_image->fb_image, image,
72 sizeof(qxl_fb_image->fb_image));
76 #ifdef CONFIG_DRM_FBDEV_EMULATION
77 static struct fb_deferred_io qxl_defio = {
78 .delay = QXL_DIRTY_DELAY,
79 .deferred_io = drm_fb_helper_deferred_io,
83 static struct fb_ops qxlfb_ops = {
85 DRM_FB_HELPER_DEFAULT_OPS,
86 .fb_fillrect = drm_fb_helper_sys_fillrect,
87 .fb_copyarea = drm_fb_helper_sys_copyarea,
88 .fb_imageblit = drm_fb_helper_sys_imageblit,
91 static void qxlfb_destroy_pinned_object(struct drm_gem_object *gobj)
93 struct qxl_bo *qbo = gem_to_qxl_bo(gobj);
98 drm_gem_object_unreference_unlocked(gobj);
101 int qxl_get_handle_for_primary_fb(struct qxl_device *qdev,
102 struct drm_file *file_priv,
106 struct drm_gem_object *gobj = qdev->fbdev_qfb->obj;
109 /* drm_get_handle_create adds a reference - good */
110 r = drm_gem_handle_create(file_priv, gobj, handle);
116 static int qxlfb_create_pinned_object(struct qxl_fbdev *qfbdev,
117 const struct drm_mode_fb_cmd2 *mode_cmd,
118 struct drm_gem_object **gobj_p)
120 struct qxl_device *qdev = qfbdev->qdev;
121 struct drm_gem_object *gobj = NULL;
122 struct qxl_bo *qbo = NULL;
124 int aligned_size, size;
125 int height = mode_cmd->height;
127 size = mode_cmd->pitches[0] * height;
128 aligned_size = ALIGN(size, PAGE_SIZE);
129 /* TODO: unallocate and reallocate surface0 for real. Hack to just
130 * have a large enough surface0 for 1024x768 Xorg 32bpp mode */
131 ret = qxl_gem_object_create(qdev, aligned_size, 0,
132 QXL_GEM_DOMAIN_SURFACE,
133 false, /* is discardable */
134 false, /* is kernel (false means device) */
138 pr_err("failed to allocate framebuffer (%d)\n",
142 qbo = gem_to_qxl_bo(gobj);
144 qbo->surf.width = mode_cmd->width;
145 qbo->surf.height = mode_cmd->height;
146 qbo->surf.stride = mode_cmd->pitches[0];
147 qbo->surf.format = SPICE_SURFACE_FMT_32_xRGB;
149 ret = qxl_bo_pin(qbo, QXL_GEM_DOMAIN_SURFACE, NULL);
153 ret = qxl_bo_kmap(qbo, NULL);
161 qxlfb_destroy_pinned_object(gobj);
168 * It should not be necessary to have a special dirty() callback for fbdev.
170 static int qxlfb_framebuffer_dirty(struct drm_framebuffer *fb,
171 struct drm_file *file_priv,
172 unsigned flags, unsigned color,
173 struct drm_clip_rect *clips,
176 struct qxl_device *qdev = fb->dev->dev_private;
177 struct fb_info *info = qdev->fbdev_info;
178 struct qxl_fbdev *qfbdev = info->par;
179 struct qxl_fb_image qxl_fb_image;
180 struct fb_image *image = &qxl_fb_image.fb_image;
182 /* TODO: hard coding 32 bpp */
183 int stride = qfbdev->qfb.base.pitches[0];
186 * we are using a shadow draw buffer, at qdev->surface0_shadow
188 qxl_io_log(qdev, "dirty x[%d, %d], y[%d, %d]\n", clips->x1, clips->x2,
189 clips->y1, clips->y2);
190 image->dx = clips->x1;
191 image->dy = clips->y1;
192 image->width = clips->x2 - clips->x1;
193 image->height = clips->y2 - clips->y1;
194 image->fg_color = 0xffffffff; /* unused, just to avoid uninitialized
197 image->depth = 32; /* TODO: take from somewhere? */
198 image->cmap.start = 0;
200 image->cmap.red = NULL;
201 image->cmap.green = NULL;
202 image->cmap.blue = NULL;
203 image->cmap.transp = NULL;
204 image->data = qfbdev->shadow + (clips->x1 * 4) + (stride * clips->y1);
206 qxl_fb_image_init(&qxl_fb_image, qdev, info, NULL);
207 qxl_draw_opaque_fb(&qxl_fb_image, stride);
212 static const struct drm_framebuffer_funcs qxlfb_fb_funcs = {
213 .destroy = qxl_user_framebuffer_destroy,
214 .dirty = qxlfb_framebuffer_dirty,
217 static int qxlfb_create(struct qxl_fbdev *qfbdev,
218 struct drm_fb_helper_surface_size *sizes)
220 struct qxl_device *qdev = qfbdev->qdev;
221 struct fb_info *info;
222 struct drm_framebuffer *fb = NULL;
223 struct drm_mode_fb_cmd2 mode_cmd;
224 struct drm_gem_object *gobj = NULL;
225 struct qxl_bo *qbo = NULL;
228 int bpp = sizes->surface_bpp;
229 int depth = sizes->surface_depth;
232 mode_cmd.width = sizes->surface_width;
233 mode_cmd.height = sizes->surface_height;
235 mode_cmd.pitches[0] = ALIGN(mode_cmd.width * ((bpp + 1) / 8), 64);
236 mode_cmd.pixel_format = drm_mode_legacy_fb_format(bpp, depth);
238 ret = qxlfb_create_pinned_object(qfbdev, &mode_cmd, &gobj);
242 qbo = gem_to_qxl_bo(gobj);
243 QXL_INFO(qdev, "%s: %dx%d %d\n", __func__, mode_cmd.width,
244 mode_cmd.height, mode_cmd.pitches[0]);
246 shadow = vmalloc(mode_cmd.pitches[0] * mode_cmd.height);
247 /* TODO: what's the usual response to memory allocation errors? */
250 "surface0 at gpu offset %lld, mmap_offset %lld (virt %p, shadow %p)\n",
251 qxl_bo_gpu_offset(qbo),
252 qxl_bo_mmap_offset(qbo),
255 size = mode_cmd.pitches[0] * mode_cmd.height;
257 info = drm_fb_helper_alloc_fbi(&qfbdev->helper);
265 qxl_framebuffer_init(&qdev->ddev, &qfbdev->qfb, &mode_cmd, gobj,
268 fb = &qfbdev->qfb.base;
270 /* setup helper with fb data */
271 qfbdev->helper.fb = fb;
273 qfbdev->shadow = shadow;
274 strcpy(info->fix.id, "qxldrmfb");
276 drm_fb_helper_fill_fix(info, fb->pitches[0], fb->format->depth);
278 info->fbops = &qxlfb_ops;
281 * TODO: using gobj->size in various places in this function. Not sure
282 * what the difference between the different sizes is.
284 info->fix.smem_start = qdev->vram_base; /* TODO - correct? */
285 info->fix.smem_len = gobj->size;
286 info->screen_base = qfbdev->shadow;
287 info->screen_size = gobj->size;
289 drm_fb_helper_fill_var(info, &qfbdev->helper, sizes->fb_width,
292 /* setup aperture base/size for vesafb takeover */
293 info->apertures->ranges[0].base = qdev->ddev.mode_config.fb_base;
294 info->apertures->ranges[0].size = qdev->vram_size;
296 info->fix.mmio_start = 0;
297 info->fix.mmio_len = 0;
299 if (info->screen_base == NULL) {
304 #ifdef CONFIG_DRM_FBDEV_EMULATION
305 info->fbdefio = &qxl_defio;
306 fb_deferred_io_init(info);
309 qdev->fbdev_info = info;
310 qdev->fbdev_qfb = &qfbdev->qfb;
311 DRM_INFO("fb mappable at 0x%lX, size %lu\n", info->fix.smem_start, (unsigned long)info->screen_size);
312 DRM_INFO("fb: depth %d, pitch %d, width %d, height %d\n",
313 fb->format->depth, fb->pitches[0], fb->width, fb->height);
322 drm_gem_object_unreference_unlocked(gobj);
323 drm_framebuffer_cleanup(fb);
326 drm_gem_object_unreference_unlocked(gobj);
330 static int qxl_fb_find_or_create_single(
331 struct drm_fb_helper *helper,
332 struct drm_fb_helper_surface_size *sizes)
334 struct qxl_fbdev *qfbdev =
335 container_of(helper, struct qxl_fbdev, helper);
340 ret = qxlfb_create(qfbdev, sizes);
348 static int qxl_fbdev_destroy(struct drm_device *dev, struct qxl_fbdev *qfbdev)
350 struct qxl_framebuffer *qfb = &qfbdev->qfb;
352 drm_fb_helper_unregister_fbi(&qfbdev->helper);
355 qxlfb_destroy_pinned_object(qfb->obj);
358 drm_fb_helper_fini(&qfbdev->helper);
359 vfree(qfbdev->shadow);
360 drm_framebuffer_cleanup(&qfb->base);
365 static const struct drm_fb_helper_funcs qxl_fb_helper_funcs = {
366 .fb_probe = qxl_fb_find_or_create_single,
369 int qxl_fbdev_init(struct qxl_device *qdev)
373 #ifdef CONFIG_DRM_FBDEV_EMULATION
374 struct qxl_fbdev *qfbdev;
375 int bpp_sel = 32; /* TODO: parameter from somewhere? */
377 qfbdev = kzalloc(sizeof(struct qxl_fbdev), GFP_KERNEL);
382 qdev->mode_info.qfbdev = qfbdev;
383 spin_lock_init(&qfbdev->delayed_ops_lock);
384 INIT_LIST_HEAD(&qfbdev->delayed_ops);
386 drm_fb_helper_prepare(&qdev->ddev, &qfbdev->helper,
387 &qxl_fb_helper_funcs);
389 ret = drm_fb_helper_init(&qdev->ddev, &qfbdev->helper,
394 ret = drm_fb_helper_single_add_all_connectors(&qfbdev->helper);
398 ret = drm_fb_helper_initial_config(&qfbdev->helper, bpp_sel);
405 drm_fb_helper_fini(&qfbdev->helper);
413 void qxl_fbdev_fini(struct qxl_device *qdev)
415 if (!qdev->mode_info.qfbdev)
418 qxl_fbdev_destroy(&qdev->ddev, qdev->mode_info.qfbdev);
419 kfree(qdev->mode_info.qfbdev);
420 qdev->mode_info.qfbdev = NULL;
423 void qxl_fbdev_set_suspend(struct qxl_device *qdev, int state)
425 if (!qdev->mode_info.qfbdev)
428 drm_fb_helper_set_suspend(&qdev->mode_info.qfbdev->helper, state);
431 bool qxl_fbdev_qobj_is_fb(struct qxl_device *qdev, struct qxl_bo *qobj)
433 if (qobj == gem_to_qxl_bo(qdev->mode_info.qfbdev->qfb.obj))