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"),
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.
26 #include <linux/module.h>
31 #include "drm/drm_crtc.h"
32 #include "drm/drm_crtc_helper.h"
35 #include "qxl_object.h"
36 #include "drm_fb_helper.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;
50 /* dirty memory logging */
60 static void qxl_fb_image_init(struct qxl_fb_image *qxl_fb_image,
61 struct qxl_device *qdev, struct fb_info *info,
62 const struct fb_image *image)
64 qxl_fb_image->qdev = qdev;
66 qxl_fb_image->visual = info->fix.visual;
67 if (qxl_fb_image->visual == FB_VISUAL_TRUECOLOR ||
68 qxl_fb_image->visual == FB_VISUAL_DIRECTCOLOR)
69 memcpy(&qxl_fb_image->pseudo_palette,
71 sizeof(qxl_fb_image->pseudo_palette));
74 if (image->depth == 1)
75 qxl_fb_image->visual = FB_VISUAL_MONO10;
77 qxl_fb_image->visual = FB_VISUAL_DIRECTCOLOR;
80 memcpy(&qxl_fb_image->fb_image, image,
81 sizeof(qxl_fb_image->fb_image));
85 static void qxl_fb_dirty_flush(struct fb_info *info)
87 struct qxl_fbdev *qfbdev = info->par;
88 struct qxl_device *qdev = qfbdev->qdev;
89 struct qxl_fb_image qxl_fb_image;
90 struct fb_image *image = &qxl_fb_image.fb_image;
94 /* TODO: hard coding 32 bpp */
95 int stride = qfbdev->qfb.base.pitches[0];
97 spin_lock_irqsave(&qfbdev->dirty.lock, flags);
99 x1 = qfbdev->dirty.x1;
100 x2 = qfbdev->dirty.x2;
101 y1 = qfbdev->dirty.y1;
102 y2 = qfbdev->dirty.y2;
103 qfbdev->dirty.x1 = 0;
104 qfbdev->dirty.x2 = 0;
105 qfbdev->dirty.y1 = 0;
106 qfbdev->dirty.y2 = 0;
108 spin_unlock_irqrestore(&qfbdev->dirty.lock, flags);
111 * we are using a shadow draw buffer, at qdev->surface0_shadow
113 qxl_io_log(qdev, "dirty x[%d, %d], y[%d, %d]", x1, x2, y1, y2);
116 image->width = x2 - x1 + 1;
117 image->height = y2 - y1 + 1;
118 image->fg_color = 0xffffffff; /* unused, just to avoid uninitialized
121 image->depth = 32; /* TODO: take from somewhere? */
122 image->cmap.start = 0;
124 image->cmap.red = NULL;
125 image->cmap.green = NULL;
126 image->cmap.blue = NULL;
127 image->cmap.transp = NULL;
128 image->data = qfbdev->shadow + (x1 * 4) + (stride * y1);
130 qxl_fb_image_init(&qxl_fb_image, qdev, info, NULL);
131 qxl_draw_opaque_fb(&qxl_fb_image, stride);
134 static void qxl_dirty_update(struct qxl_fbdev *qfbdev,
135 int x, int y, int width, int height)
137 struct qxl_device *qdev = qfbdev->qdev;
144 spin_lock_irqsave(&qfbdev->dirty.lock, flags);
146 if ((qfbdev->dirty.y2 - qfbdev->dirty.y1) &&
147 (qfbdev->dirty.x2 - qfbdev->dirty.x1)) {
148 if (qfbdev->dirty.y1 < y)
149 y = qfbdev->dirty.y1;
150 if (qfbdev->dirty.y2 > y2)
151 y2 = qfbdev->dirty.y2;
152 if (qfbdev->dirty.x1 < x)
153 x = qfbdev->dirty.x1;
154 if (qfbdev->dirty.x2 > x2)
155 x2 = qfbdev->dirty.x2;
158 qfbdev->dirty.x1 = x;
159 qfbdev->dirty.x2 = x2;
160 qfbdev->dirty.y1 = y;
161 qfbdev->dirty.y2 = y2;
163 spin_unlock_irqrestore(&qfbdev->dirty.lock, flags);
165 schedule_work(&qdev->fb_work);
168 static void qxl_deferred_io(struct fb_info *info,
169 struct list_head *pagelist)
171 struct qxl_fbdev *qfbdev = info->par;
172 unsigned long start, end, min, max;
178 list_for_each_entry(page, pagelist, lru) {
179 start = page->index << PAGE_SHIFT;
180 end = start + PAGE_SIZE - 1;
181 min = min(min, start);
186 y1 = min / info->fix.line_length;
187 y2 = (max / info->fix.line_length) + 1;
188 qxl_dirty_update(qfbdev, 0, y1, info->var.xres, y2 - y1);
192 static struct fb_deferred_io qxl_defio = {
193 .delay = QXL_DIRTY_DELAY,
194 .deferred_io = qxl_deferred_io,
197 static void qxl_fb_fillrect(struct fb_info *info,
198 const struct fb_fillrect *rect)
200 struct qxl_fbdev *qfbdev = info->par;
202 drm_fb_helper_sys_fillrect(info, rect);
203 qxl_dirty_update(qfbdev, rect->dx, rect->dy, rect->width,
207 static void qxl_fb_copyarea(struct fb_info *info,
208 const struct fb_copyarea *area)
210 struct qxl_fbdev *qfbdev = info->par;
212 drm_fb_helper_sys_copyarea(info, area);
213 qxl_dirty_update(qfbdev, area->dx, area->dy, area->width,
217 static void qxl_fb_imageblit(struct fb_info *info,
218 const struct fb_image *image)
220 struct qxl_fbdev *qfbdev = info->par;
222 drm_fb_helper_sys_imageblit(info, image);
223 qxl_dirty_update(qfbdev, image->dx, image->dy, image->width,
227 static void qxl_fb_work(struct work_struct *work)
229 struct qxl_device *qdev = container_of(work, struct qxl_device, fb_work);
230 struct qxl_fbdev *qfbdev = qdev->mode_info.qfbdev;
232 qxl_fb_dirty_flush(qfbdev->helper.fbdev);
235 int qxl_fb_init(struct qxl_device *qdev)
237 INIT_WORK(&qdev->fb_work, qxl_fb_work);
241 static struct fb_ops qxlfb_ops = {
242 .owner = THIS_MODULE,
243 .fb_check_var = drm_fb_helper_check_var,
244 .fb_set_par = drm_fb_helper_set_par, /* TODO: copy vmwgfx */
245 .fb_fillrect = qxl_fb_fillrect,
246 .fb_copyarea = qxl_fb_copyarea,
247 .fb_imageblit = qxl_fb_imageblit,
248 .fb_pan_display = drm_fb_helper_pan_display,
249 .fb_blank = drm_fb_helper_blank,
250 .fb_setcmap = drm_fb_helper_setcmap,
251 .fb_debug_enter = drm_fb_helper_debug_enter,
252 .fb_debug_leave = drm_fb_helper_debug_leave,
255 static void qxlfb_destroy_pinned_object(struct drm_gem_object *gobj)
257 struct qxl_bo *qbo = gem_to_qxl_bo(gobj);
260 ret = qxl_bo_reserve(qbo, false);
261 if (likely(ret == 0)) {
264 qxl_bo_unreserve(qbo);
266 drm_gem_object_unreference_unlocked(gobj);
269 int qxl_get_handle_for_primary_fb(struct qxl_device *qdev,
270 struct drm_file *file_priv,
274 struct drm_gem_object *gobj = qdev->fbdev_qfb->obj;
277 /* drm_get_handle_create adds a reference - good */
278 r = drm_gem_handle_create(file_priv, gobj, handle);
284 static int qxlfb_create_pinned_object(struct qxl_fbdev *qfbdev,
285 const struct drm_mode_fb_cmd2 *mode_cmd,
286 struct drm_gem_object **gobj_p)
288 struct qxl_device *qdev = qfbdev->qdev;
289 struct drm_gem_object *gobj = NULL;
290 struct qxl_bo *qbo = NULL;
292 int aligned_size, size;
293 int height = mode_cmd->height;
297 drm_fb_get_bpp_depth(mode_cmd->pixel_format, &bpp, &depth);
299 size = mode_cmd->pitches[0] * height;
300 aligned_size = ALIGN(size, PAGE_SIZE);
301 /* TODO: unallocate and reallocate surface0 for real. Hack to just
302 * have a large enough surface0 for 1024x768 Xorg 32bpp mode */
303 ret = qxl_gem_object_create(qdev, aligned_size, 0,
304 QXL_GEM_DOMAIN_SURFACE,
305 false, /* is discardable */
306 false, /* is kernel (false means device) */
310 pr_err("failed to allocate framebuffer (%d)\n",
314 qbo = gem_to_qxl_bo(gobj);
316 qbo->surf.width = mode_cmd->width;
317 qbo->surf.height = mode_cmd->height;
318 qbo->surf.stride = mode_cmd->pitches[0];
319 qbo->surf.format = SPICE_SURFACE_FMT_32_xRGB;
320 ret = qxl_bo_reserve(qbo, false);
321 if (unlikely(ret != 0))
323 ret = qxl_bo_pin(qbo, QXL_GEM_DOMAIN_SURFACE, NULL);
325 qxl_bo_unreserve(qbo);
328 ret = qxl_bo_kmap(qbo, NULL);
329 qxl_bo_unreserve(qbo); /* unreserve, will be mmaped */
336 qxlfb_destroy_pinned_object(gobj);
341 static int qxlfb_create(struct qxl_fbdev *qfbdev,
342 struct drm_fb_helper_surface_size *sizes)
344 struct qxl_device *qdev = qfbdev->qdev;
345 struct fb_info *info;
346 struct drm_framebuffer *fb = NULL;
347 struct drm_mode_fb_cmd2 mode_cmd;
348 struct drm_gem_object *gobj = NULL;
349 struct qxl_bo *qbo = NULL;
352 int bpp = sizes->surface_bpp;
353 int depth = sizes->surface_depth;
356 mode_cmd.width = sizes->surface_width;
357 mode_cmd.height = sizes->surface_height;
359 mode_cmd.pitches[0] = ALIGN(mode_cmd.width * ((bpp + 1) / 8), 64);
360 mode_cmd.pixel_format = drm_mode_legacy_fb_format(bpp, depth);
362 ret = qxlfb_create_pinned_object(qfbdev, &mode_cmd, &gobj);
363 qbo = gem_to_qxl_bo(gobj);
364 QXL_INFO(qdev, "%s: %dx%d %d\n", __func__, mode_cmd.width,
365 mode_cmd.height, mode_cmd.pitches[0]);
367 shadow = vmalloc(mode_cmd.pitches[0] * mode_cmd.height);
368 /* TODO: what's the usual response to memory allocation errors? */
371 "surface0 at gpu offset %lld, mmap_offset %lld (virt %p, shadow %p)\n",
372 qxl_bo_gpu_offset(qbo),
373 qxl_bo_mmap_offset(qbo),
376 size = mode_cmd.pitches[0] * mode_cmd.height;
378 info = drm_fb_helper_alloc_fbi(&qfbdev->helper);
386 qxl_framebuffer_init(qdev->ddev, &qfbdev->qfb, &mode_cmd, gobj);
388 fb = &qfbdev->qfb.base;
390 /* setup helper with fb data */
391 qfbdev->helper.fb = fb;
393 qfbdev->shadow = shadow;
394 strcpy(info->fix.id, "qxldrmfb");
396 drm_fb_helper_fill_fix(info, fb->pitches[0], fb->depth);
398 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_COPYAREA | FBINFO_HWACCEL_FILLRECT;
399 info->fbops = &qxlfb_ops;
402 * TODO: using gobj->size in various places in this function. Not sure
403 * what the difference between the different sizes is.
405 info->fix.smem_start = qdev->vram_base; /* TODO - correct? */
406 info->fix.smem_len = gobj->size;
407 info->screen_base = qfbdev->shadow;
408 info->screen_size = gobj->size;
410 drm_fb_helper_fill_var(info, &qfbdev->helper, sizes->fb_width,
413 /* setup aperture base/size for vesafb takeover */
414 info->apertures->ranges[0].base = qdev->ddev->mode_config.fb_base;
415 info->apertures->ranges[0].size = qdev->vram_size;
417 info->fix.mmio_start = 0;
418 info->fix.mmio_len = 0;
420 if (info->screen_base == NULL) {
422 goto out_destroy_fbi;
425 info->fbdefio = &qxl_defio;
426 fb_deferred_io_init(info);
428 qdev->fbdev_info = info;
429 qdev->fbdev_qfb = &qfbdev->qfb;
430 DRM_INFO("fb mappable at 0x%lX, size %lu\n", info->fix.smem_start, (unsigned long)info->screen_size);
431 DRM_INFO("fb: depth %d, pitch %d, width %d, height %d\n", fb->depth, fb->pitches[0], fb->width, fb->height);
435 drm_fb_helper_release_fbi(&qfbdev->helper);
438 ret = qxl_bo_reserve(qbo, false);
439 if (likely(ret == 0)) {
442 qxl_bo_unreserve(qbo);
446 drm_gem_object_unreference(gobj);
447 drm_framebuffer_cleanup(fb);
450 drm_gem_object_unreference(gobj);
454 static int qxl_fb_find_or_create_single(
455 struct drm_fb_helper *helper,
456 struct drm_fb_helper_surface_size *sizes)
458 struct qxl_fbdev *qfbdev =
459 container_of(helper, struct qxl_fbdev, helper);
464 ret = qxlfb_create(qfbdev, sizes);
472 static int qxl_fbdev_destroy(struct drm_device *dev, struct qxl_fbdev *qfbdev)
474 struct qxl_framebuffer *qfb = &qfbdev->qfb;
476 drm_fb_helper_unregister_fbi(&qfbdev->helper);
477 drm_fb_helper_release_fbi(&qfbdev->helper);
480 qxlfb_destroy_pinned_object(qfb->obj);
483 drm_fb_helper_fini(&qfbdev->helper);
484 vfree(qfbdev->shadow);
485 drm_framebuffer_cleanup(&qfb->base);
490 static const struct drm_fb_helper_funcs qxl_fb_helper_funcs = {
491 .fb_probe = qxl_fb_find_or_create_single,
494 int qxl_fbdev_init(struct qxl_device *qdev)
496 struct qxl_fbdev *qfbdev;
497 int bpp_sel = 32; /* TODO: parameter from somewhere? */
500 qfbdev = kzalloc(sizeof(struct qxl_fbdev), GFP_KERNEL);
505 qdev->mode_info.qfbdev = qfbdev;
506 spin_lock_init(&qfbdev->delayed_ops_lock);
507 spin_lock_init(&qfbdev->dirty.lock);
508 INIT_LIST_HEAD(&qfbdev->delayed_ops);
510 drm_fb_helper_prepare(qdev->ddev, &qfbdev->helper,
511 &qxl_fb_helper_funcs);
513 ret = drm_fb_helper_init(qdev->ddev, &qfbdev->helper,
514 qxl_num_crtc /* num_crtc - QXL supports just 1 */,
519 ret = drm_fb_helper_single_add_all_connectors(&qfbdev->helper);
523 ret = drm_fb_helper_initial_config(&qfbdev->helper, bpp_sel);
530 drm_fb_helper_fini(&qfbdev->helper);
536 void qxl_fbdev_fini(struct qxl_device *qdev)
538 if (!qdev->mode_info.qfbdev)
541 qxl_fbdev_destroy(qdev->ddev, qdev->mode_info.qfbdev);
542 kfree(qdev->mode_info.qfbdev);
543 qdev->mode_info.qfbdev = NULL;
546 void qxl_fbdev_set_suspend(struct qxl_device *qdev, int state)
548 drm_fb_helper_set_suspend(&qdev->mode_info.qfbdev->helper, state);
551 bool qxl_fbdev_qobj_is_fb(struct qxl_device *qdev, struct qxl_bo *qobj)
553 if (qobj == gem_to_qxl_bo(qdev->mode_info.qfbdev->qfb.obj))