1 /**************************************************************************
3 * Copyright © 2007 David Airlie
4 * Copyright © 2009 VMware, Inc., Palo Alto, CA., USA
7 * Permission is hereby granted, free of charge, to any person obtaining a
8 * copy of this software and associated documentation files (the
9 * "Software"), to deal in the Software without restriction, including
10 * without limitation the rights to use, copy, modify, merge, publish,
11 * distribute, sub license, and/or sell copies of the Software, and to
12 * permit persons to whom the Software is furnished to do so, subject to
13 * the following conditions:
15 * The above copyright notice and this permission notice (including the
16 * next paragraph) shall be included in all copies or substantial portions
19 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
20 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
21 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
22 * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
23 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
24 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
25 * USE OR OTHER DEALINGS IN THE SOFTWARE.
27 **************************************************************************/
29 #include <linux/export.h>
32 #include "vmwgfx_drv.h"
34 #include <drm/ttm/ttm_placement.h>
36 #define VMW_DIRTY_DELAY (HZ / 30)
39 struct vmw_private *vmw_priv;
43 struct vmw_dma_buffer *vmw_bo;
44 struct ttm_bo_kmap_obj map;
46 u32 pseudo_palette[17];
68 static int vmw_fb_setcolreg(unsigned regno, unsigned red, unsigned green,
69 unsigned blue, unsigned transp,
72 struct vmw_fb_par *par = info->par;
73 u32 *pal = par->pseudo_palette;
76 DRM_ERROR("Bad regno %u.\n", regno);
83 pal[regno] = ((red & 0xff00) << 8) |
85 ((blue & 0xff00) >> 8);
88 DRM_ERROR("Bad depth %u, bpp %u.\n", par->depth, par->bpp);
95 static int vmw_fb_check_var(struct fb_var_screeninfo *var,
98 int depth = var->bits_per_pixel;
99 struct vmw_fb_par *par = info->par;
100 struct vmw_private *vmw_priv = par->vmw_priv;
102 switch (var->bits_per_pixel) {
104 depth = (var->transp.length > 0) ? 32 : 24;
107 DRM_ERROR("Bad bpp %u.\n", var->bits_per_pixel);
113 var->red.offset = 16;
114 var->green.offset = 8;
115 var->blue.offset = 0;
117 var->green.length = 8;
118 var->blue.length = 8;
119 var->transp.length = 0;
120 var->transp.offset = 0;
123 var->red.offset = 16;
124 var->green.offset = 8;
125 var->blue.offset = 0;
127 var->green.length = 8;
128 var->blue.length = 8;
129 var->transp.length = 8;
130 var->transp.offset = 24;
133 DRM_ERROR("Bad depth %u.\n", depth);
137 if (!(vmw_priv->capabilities & SVGA_CAP_DISPLAY_TOPOLOGY) &&
138 (var->xoffset != 0 || var->yoffset != 0)) {
139 DRM_ERROR("Can not handle panning without display topology\n");
143 if ((var->xoffset + var->xres) > par->max_width ||
144 (var->yoffset + var->yres) > par->max_height) {
145 DRM_ERROR("Requested geom can not fit in framebuffer\n");
149 if (!vmw_kms_validate_mode_vram(vmw_priv,
150 info->fix.line_length,
151 var->yoffset + var->yres)) {
152 DRM_ERROR("Requested geom can not fit in framebuffer\n");
159 static int vmw_fb_set_par(struct fb_info *info)
161 struct vmw_fb_par *par = info->par;
162 struct vmw_private *vmw_priv = par->vmw_priv;
165 ret = vmw_kms_write_svga(vmw_priv, info->var.xres, info->var.yres,
166 info->fix.line_length,
167 par->bpp, par->depth);
171 if (vmw_priv->capabilities & SVGA_CAP_DISPLAY_TOPOLOGY) {
172 /* TODO check if pitch and offset changes */
173 vmw_write(vmw_priv, SVGA_REG_NUM_GUEST_DISPLAYS, 1);
174 vmw_write(vmw_priv, SVGA_REG_DISPLAY_ID, 0);
175 vmw_write(vmw_priv, SVGA_REG_DISPLAY_IS_PRIMARY, true);
176 vmw_write(vmw_priv, SVGA_REG_DISPLAY_POSITION_X, info->var.xoffset);
177 vmw_write(vmw_priv, SVGA_REG_DISPLAY_POSITION_Y, info->var.yoffset);
178 vmw_write(vmw_priv, SVGA_REG_DISPLAY_WIDTH, info->var.xres);
179 vmw_write(vmw_priv, SVGA_REG_DISPLAY_HEIGHT, info->var.yres);
180 vmw_write(vmw_priv, SVGA_REG_DISPLAY_ID, SVGA_ID_INVALID);
183 /* This is really helpful since if this fails the user
184 * can probably not see anything on the screen.
186 WARN_ON(vmw_read(vmw_priv, SVGA_REG_FB_OFFSET) != 0);
191 static int vmw_fb_pan_display(struct fb_var_screeninfo *var,
192 struct fb_info *info)
197 static int vmw_fb_blank(int blank, struct fb_info *info)
206 static void vmw_fb_dirty_flush(struct vmw_fb_par *par)
208 struct vmw_private *vmw_priv = par->vmw_priv;
209 struct fb_info *info = vmw_priv->fb_info;
210 int stride = (info->fix.line_length / 4);
211 int *src = (int *)info->screen_base;
212 __le32 __iomem *vram_mem = par->bo_ptr;
218 SVGAFifoCmdUpdate body;
221 if (vmw_priv->suspended)
224 spin_lock_irqsave(&par->dirty.lock, flags);
225 if (!par->dirty.active) {
226 spin_unlock_irqrestore(&par->dirty.lock, flags);
231 w = min(par->dirty.x2, info->var.xres) - x;
232 h = min(par->dirty.y2, info->var.yres) - y;
233 par->dirty.x1 = par->dirty.x2 = 0;
234 par->dirty.y1 = par->dirty.y2 = 0;
235 spin_unlock_irqrestore(&par->dirty.lock, flags);
237 for (i = y * stride; i < info->fix.smem_len / 4; i += stride) {
238 for (k = i+x; k < i+x+w && k < info->fix.smem_len / 4; k++)
239 iowrite32(src[k], vram_mem + k);
243 DRM_INFO("%s, (%u, %u) (%ux%u)\n", __func__, x, y, w, h);
246 cmd = vmw_fifo_reserve(vmw_priv, sizeof(*cmd));
247 if (unlikely(cmd == NULL)) {
248 DRM_ERROR("Fifo reserve failed.\n");
252 cmd->header = cpu_to_le32(SVGA_CMD_UPDATE);
253 cmd->body.x = cpu_to_le32(x);
254 cmd->body.y = cpu_to_le32(y);
255 cmd->body.width = cpu_to_le32(w);
256 cmd->body.height = cpu_to_le32(h);
257 vmw_fifo_commit(vmw_priv, sizeof(*cmd));
260 static void vmw_fb_dirty_mark(struct vmw_fb_par *par,
261 unsigned x1, unsigned y1,
262 unsigned width, unsigned height)
264 struct fb_info *info = par->vmw_priv->fb_info;
266 unsigned x2 = x1 + width;
267 unsigned y2 = y1 + height;
269 spin_lock_irqsave(&par->dirty.lock, flags);
270 if (par->dirty.x1 == par->dirty.x2) {
275 /* if we are active start the dirty work
276 * we share the work with the defio system */
277 if (par->dirty.active)
278 schedule_delayed_work(&info->deferred_work, VMW_DIRTY_DELAY);
280 if (x1 < par->dirty.x1)
282 if (y1 < par->dirty.y1)
284 if (x2 > par->dirty.x2)
286 if (y2 > par->dirty.y2)
289 spin_unlock_irqrestore(&par->dirty.lock, flags);
292 static void vmw_deferred_io(struct fb_info *info,
293 struct list_head *pagelist)
295 struct vmw_fb_par *par = info->par;
296 unsigned long start, end, min, max;
303 list_for_each_entry(page, pagelist, lru) {
304 start = page->index << PAGE_SHIFT;
305 end = start + PAGE_SIZE - 1;
306 min = min(min, start);
311 y1 = min / info->fix.line_length;
312 y2 = (max / info->fix.line_length) + 1;
314 spin_lock_irqsave(&par->dirty.lock, flags);
317 par->dirty.x2 = info->var.xres;
319 spin_unlock_irqrestore(&par->dirty.lock, flags);
322 vmw_fb_dirty_flush(par);
325 struct fb_deferred_io vmw_defio = {
326 .delay = VMW_DIRTY_DELAY,
327 .deferred_io = vmw_deferred_io,
334 static void vmw_fb_fillrect(struct fb_info *info, const struct fb_fillrect *rect)
336 cfb_fillrect(info, rect);
337 vmw_fb_dirty_mark(info->par, rect->dx, rect->dy,
338 rect->width, rect->height);
341 static void vmw_fb_copyarea(struct fb_info *info, const struct fb_copyarea *region)
343 cfb_copyarea(info, region);
344 vmw_fb_dirty_mark(info->par, region->dx, region->dy,
345 region->width, region->height);
348 static void vmw_fb_imageblit(struct fb_info *info, const struct fb_image *image)
350 cfb_imageblit(info, image);
351 vmw_fb_dirty_mark(info->par, image->dx, image->dy,
352 image->width, image->height);
359 static struct fb_ops vmw_fb_ops = {
360 .owner = THIS_MODULE,
361 .fb_check_var = vmw_fb_check_var,
362 .fb_set_par = vmw_fb_set_par,
363 .fb_setcolreg = vmw_fb_setcolreg,
364 .fb_fillrect = vmw_fb_fillrect,
365 .fb_copyarea = vmw_fb_copyarea,
366 .fb_imageblit = vmw_fb_imageblit,
367 .fb_pan_display = vmw_fb_pan_display,
368 .fb_blank = vmw_fb_blank,
371 static int vmw_fb_create_bo(struct vmw_private *vmw_priv,
372 size_t size, struct vmw_dma_buffer **out)
374 struct vmw_dma_buffer *vmw_bo;
375 struct ttm_placement ne_placement = vmw_vram_ne_placement;
378 ne_placement.lpfn = (size + PAGE_SIZE - 1) >> PAGE_SHIFT;
380 (void) ttm_write_lock(&vmw_priv->reservation_sem, false);
382 vmw_bo = kmalloc(sizeof(*vmw_bo), GFP_KERNEL);
388 ret = vmw_dmabuf_init(vmw_priv, vmw_bo, size,
391 &vmw_dmabuf_bo_free);
392 if (unlikely(ret != 0))
393 goto err_unlock; /* init frees the buffer on failure */
397 ttm_write_unlock(&vmw_priv->fbdev_master.lock);
402 ttm_write_unlock(&vmw_priv->fbdev_master.lock);
406 int vmw_fb_init(struct vmw_private *vmw_priv)
408 struct device *device = &vmw_priv->dev->pdev->dev;
409 struct vmw_fb_par *par;
410 struct fb_info *info;
411 unsigned initial_width, initial_height;
412 unsigned fb_width, fb_height;
413 unsigned fb_bpp, fb_depth, fb_offset, fb_pitch, fb_size;
419 /* XXX As shouldn't these be as well. */
420 fb_width = min(vmw_priv->fb_max_width, (unsigned)2048);
421 fb_height = min(vmw_priv->fb_max_height, (unsigned)2048);
423 initial_width = min(vmw_priv->initial_width, fb_width);
424 initial_height = min(vmw_priv->initial_height, fb_height);
426 fb_pitch = fb_width * fb_bpp / 8;
427 fb_size = fb_pitch * fb_height;
428 fb_offset = vmw_read(vmw_priv, SVGA_REG_FB_OFFSET);
430 info = framebuffer_alloc(sizeof(*par), device);
437 vmw_priv->fb_info = info;
439 par->vmw_priv = vmw_priv;
440 par->depth = fb_depth;
443 par->max_width = fb_width;
444 par->max_height = fb_height;
447 * Create buffers and alloc memory
449 par->vmalloc = vmalloc(fb_size);
450 if (unlikely(par->vmalloc == NULL)) {
455 ret = vmw_fb_create_bo(vmw_priv, fb_size, &par->vmw_bo);
456 if (unlikely(ret != 0))
459 ret = ttm_bo_kmap(&par->vmw_bo->base,
461 par->vmw_bo->base.num_pages,
463 if (unlikely(ret != 0))
465 par->bo_ptr = ttm_kmap_obj_virtual(&par->map, &par->bo_iowrite);
466 par->bo_size = fb_size;
471 strcpy(info->fix.id, "svgadrmfb");
472 info->fix.type = FB_TYPE_PACKED_PIXELS;
473 info->fix.visual = FB_VISUAL_TRUECOLOR;
474 info->fix.type_aux = 0;
475 info->fix.xpanstep = 1; /* doing it in hw */
476 info->fix.ypanstep = 1; /* doing it in hw */
477 info->fix.ywrapstep = 0;
478 info->fix.accel = FB_ACCEL_NONE;
479 info->fix.line_length = fb_pitch;
481 info->fix.smem_start = 0;
482 info->fix.smem_len = fb_size;
484 info->pseudo_palette = par->pseudo_palette;
485 info->screen_base = par->vmalloc;
486 info->screen_size = fb_size;
488 info->flags = FBINFO_DEFAULT;
489 info->fbops = &vmw_fb_ops;
491 /* 24 depth per default */
492 info->var.red.offset = 16;
493 info->var.green.offset = 8;
494 info->var.blue.offset = 0;
495 info->var.red.length = 8;
496 info->var.green.length = 8;
497 info->var.blue.length = 8;
498 info->var.transp.offset = 0;
499 info->var.transp.length = 0;
501 info->var.xres_virtual = fb_width;
502 info->var.yres_virtual = fb_height;
503 info->var.bits_per_pixel = par->bpp;
504 info->var.xoffset = 0;
505 info->var.yoffset = 0;
506 info->var.activate = FB_ACTIVATE_NOW;
507 info->var.height = -1;
508 info->var.width = -1;
510 info->var.xres = initial_width;
511 info->var.yres = initial_height;
513 /* Use default scratch pixmap (info->pixmap.flags = FB_PIXMAP_SYSTEM) */
515 info->apertures = alloc_apertures(1);
516 if (!info->apertures) {
520 info->apertures->ranges[0].base = vmw_priv->vram_start;
521 info->apertures->ranges[0].size = vmw_priv->vram_size;
524 * Dirty & Deferred IO
526 par->dirty.x1 = par->dirty.x2 = 0;
527 par->dirty.y1 = par->dirty.y2 = 0;
528 par->dirty.active = true;
529 spin_lock_init(&par->dirty.lock);
530 info->fbdefio = &vmw_defio;
531 fb_deferred_io_init(info);
533 ret = register_framebuffer(info);
534 if (unlikely(ret != 0))
540 fb_deferred_io_cleanup(info);
542 ttm_bo_kunmap(&par->map);
544 ttm_bo_unref((struct ttm_buffer_object **)&par->vmw_bo);
547 framebuffer_release(info);
548 vmw_priv->fb_info = NULL;
553 int vmw_fb_close(struct vmw_private *vmw_priv)
555 struct fb_info *info;
556 struct vmw_fb_par *par;
557 struct ttm_buffer_object *bo;
559 if (!vmw_priv->fb_info)
562 info = vmw_priv->fb_info;
564 bo = &par->vmw_bo->base;
568 fb_deferred_io_cleanup(info);
569 unregister_framebuffer(info);
571 ttm_bo_kunmap(&par->map);
575 framebuffer_release(info);
580 int vmw_fb_off(struct vmw_private *vmw_priv)
582 struct fb_info *info;
583 struct vmw_fb_par *par;
586 if (!vmw_priv->fb_info)
589 info = vmw_priv->fb_info;
592 spin_lock_irqsave(&par->dirty.lock, flags);
593 par->dirty.active = false;
594 spin_unlock_irqrestore(&par->dirty.lock, flags);
596 flush_delayed_work(&info->deferred_work);
599 ttm_bo_kunmap(&par->map);
601 vmw_dmabuf_unpin(vmw_priv, par->vmw_bo, false);
606 int vmw_fb_on(struct vmw_private *vmw_priv)
608 struct fb_info *info;
609 struct vmw_fb_par *par;
614 if (!vmw_priv->fb_info)
617 info = vmw_priv->fb_info;
620 /* we are already active */
621 if (par->bo_ptr != NULL)
624 /* Make sure that all overlays are stoped when we take over */
625 vmw_overlay_stop_all(vmw_priv);
627 ret = vmw_dmabuf_to_start_of_vram(vmw_priv, par->vmw_bo, true, false);
628 if (unlikely(ret != 0)) {
629 DRM_ERROR("could not move buffer to start of VRAM\n");
633 ret = ttm_bo_kmap(&par->vmw_bo->base,
635 par->vmw_bo->base.num_pages,
638 par->bo_ptr = ttm_kmap_obj_virtual(&par->map, &dummy);
640 spin_lock_irqsave(&par->dirty.lock, flags);
641 par->dirty.active = true;
642 spin_unlock_irqrestore(&par->dirty.lock, flags);
645 vmw_fb_set_par(info);
647 vmw_fb_dirty_mark(par, 0, 0, info->var.xres, info->var.yres);
649 /* If there already was stuff dirty we wont
650 * schedule a new work, so lets do it now */
651 schedule_delayed_work(&info->deferred_work, 0);