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 var->xres * var->bits_per_pixel/8,
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 info->fix.line_length = info->var.xres * info->var.bits_per_pixel/8;
167 ret = vmw_kms_write_svga(vmw_priv, info->var.xres, info->var.yres,
168 info->fix.line_length,
169 par->bpp, par->depth);
173 if (vmw_priv->capabilities & SVGA_CAP_DISPLAY_TOPOLOGY) {
174 /* TODO check if pitch and offset changes */
175 vmw_write(vmw_priv, SVGA_REG_NUM_GUEST_DISPLAYS, 1);
176 vmw_write(vmw_priv, SVGA_REG_DISPLAY_ID, 0);
177 vmw_write(vmw_priv, SVGA_REG_DISPLAY_IS_PRIMARY, true);
178 vmw_write(vmw_priv, SVGA_REG_DISPLAY_POSITION_X, info->var.xoffset);
179 vmw_write(vmw_priv, SVGA_REG_DISPLAY_POSITION_Y, info->var.yoffset);
180 vmw_write(vmw_priv, SVGA_REG_DISPLAY_WIDTH, info->var.xres);
181 vmw_write(vmw_priv, SVGA_REG_DISPLAY_HEIGHT, info->var.yres);
182 vmw_write(vmw_priv, SVGA_REG_DISPLAY_ID, SVGA_ID_INVALID);
185 /* This is really helpful since if this fails the user
186 * can probably not see anything on the screen.
188 WARN_ON(vmw_read(vmw_priv, SVGA_REG_FB_OFFSET) != 0);
193 static int vmw_fb_pan_display(struct fb_var_screeninfo *var,
194 struct fb_info *info)
199 static int vmw_fb_blank(int blank, struct fb_info *info)
208 static void vmw_fb_dirty_flush(struct vmw_fb_par *par)
210 struct vmw_private *vmw_priv = par->vmw_priv;
211 struct fb_info *info = vmw_priv->fb_info;
212 int stride = (info->fix.line_length / 4);
213 int *src = (int *)info->screen_base;
214 __le32 __iomem *vram_mem = par->bo_ptr;
220 SVGAFifoCmdUpdate body;
223 if (vmw_priv->suspended)
226 spin_lock_irqsave(&par->dirty.lock, flags);
227 if (!par->dirty.active) {
228 spin_unlock_irqrestore(&par->dirty.lock, flags);
233 w = min(par->dirty.x2, info->var.xres) - x;
234 h = min(par->dirty.y2, info->var.yres) - y;
235 par->dirty.x1 = par->dirty.x2 = 0;
236 par->dirty.y1 = par->dirty.y2 = 0;
237 spin_unlock_irqrestore(&par->dirty.lock, flags);
239 for (i = y * stride; i < info->fix.smem_len / 4; i += stride) {
240 for (k = i+x; k < i+x+w && k < info->fix.smem_len / 4; k++)
241 iowrite32(src[k], vram_mem + k);
245 DRM_INFO("%s, (%u, %u) (%ux%u)\n", __func__, x, y, w, h);
248 cmd = vmw_fifo_reserve(vmw_priv, sizeof(*cmd));
249 if (unlikely(cmd == NULL)) {
250 DRM_ERROR("Fifo reserve failed.\n");
254 cmd->header = cpu_to_le32(SVGA_CMD_UPDATE);
255 cmd->body.x = cpu_to_le32(x);
256 cmd->body.y = cpu_to_le32(y);
257 cmd->body.width = cpu_to_le32(w);
258 cmd->body.height = cpu_to_le32(h);
259 vmw_fifo_commit(vmw_priv, sizeof(*cmd));
262 static void vmw_fb_dirty_mark(struct vmw_fb_par *par,
263 unsigned x1, unsigned y1,
264 unsigned width, unsigned height)
266 struct fb_info *info = par->vmw_priv->fb_info;
268 unsigned x2 = x1 + width;
269 unsigned y2 = y1 + height;
271 spin_lock_irqsave(&par->dirty.lock, flags);
272 if (par->dirty.x1 == par->dirty.x2) {
277 /* if we are active start the dirty work
278 * we share the work with the defio system */
279 if (par->dirty.active)
280 schedule_delayed_work(&info->deferred_work, VMW_DIRTY_DELAY);
282 if (x1 < par->dirty.x1)
284 if (y1 < par->dirty.y1)
286 if (x2 > par->dirty.x2)
288 if (y2 > par->dirty.y2)
291 spin_unlock_irqrestore(&par->dirty.lock, flags);
294 static void vmw_deferred_io(struct fb_info *info,
295 struct list_head *pagelist)
297 struct vmw_fb_par *par = info->par;
298 unsigned long start, end, min, max;
305 list_for_each_entry(page, pagelist, lru) {
306 start = page->index << PAGE_SHIFT;
307 end = start + PAGE_SIZE - 1;
308 min = min(min, start);
313 y1 = min / info->fix.line_length;
314 y2 = (max / info->fix.line_length) + 1;
316 spin_lock_irqsave(&par->dirty.lock, flags);
319 par->dirty.x2 = info->var.xres;
321 spin_unlock_irqrestore(&par->dirty.lock, flags);
324 vmw_fb_dirty_flush(par);
327 struct fb_deferred_io vmw_defio = {
328 .delay = VMW_DIRTY_DELAY,
329 .deferred_io = vmw_deferred_io,
336 static void vmw_fb_fillrect(struct fb_info *info, const struct fb_fillrect *rect)
338 cfb_fillrect(info, rect);
339 vmw_fb_dirty_mark(info->par, rect->dx, rect->dy,
340 rect->width, rect->height);
343 static void vmw_fb_copyarea(struct fb_info *info, const struct fb_copyarea *region)
345 cfb_copyarea(info, region);
346 vmw_fb_dirty_mark(info->par, region->dx, region->dy,
347 region->width, region->height);
350 static void vmw_fb_imageblit(struct fb_info *info, const struct fb_image *image)
352 cfb_imageblit(info, image);
353 vmw_fb_dirty_mark(info->par, image->dx, image->dy,
354 image->width, image->height);
361 static struct fb_ops vmw_fb_ops = {
362 .owner = THIS_MODULE,
363 .fb_check_var = vmw_fb_check_var,
364 .fb_set_par = vmw_fb_set_par,
365 .fb_setcolreg = vmw_fb_setcolreg,
366 .fb_fillrect = vmw_fb_fillrect,
367 .fb_copyarea = vmw_fb_copyarea,
368 .fb_imageblit = vmw_fb_imageblit,
369 .fb_pan_display = vmw_fb_pan_display,
370 .fb_blank = vmw_fb_blank,
373 static int vmw_fb_create_bo(struct vmw_private *vmw_priv,
374 size_t size, struct vmw_dma_buffer **out)
376 struct vmw_dma_buffer *vmw_bo;
377 struct ttm_placement ne_placement = vmw_vram_ne_placement;
380 ne_placement.lpfn = (size + PAGE_SIZE - 1) >> PAGE_SHIFT;
382 (void) ttm_write_lock(&vmw_priv->reservation_sem, false);
384 vmw_bo = kmalloc(sizeof(*vmw_bo), GFP_KERNEL);
390 ret = vmw_dmabuf_init(vmw_priv, vmw_bo, size,
393 &vmw_dmabuf_bo_free);
394 if (unlikely(ret != 0))
395 goto err_unlock; /* init frees the buffer on failure */
399 ttm_write_unlock(&vmw_priv->fbdev_master.lock);
404 ttm_write_unlock(&vmw_priv->fbdev_master.lock);
408 int vmw_fb_init(struct vmw_private *vmw_priv)
410 struct device *device = &vmw_priv->dev->pdev->dev;
411 struct vmw_fb_par *par;
412 struct fb_info *info;
413 unsigned initial_width, initial_height;
414 unsigned fb_width, fb_height;
415 unsigned fb_bpp, fb_depth, fb_offset, fb_pitch, fb_size;
421 /* XXX As shouldn't these be as well. */
422 fb_width = min(vmw_priv->fb_max_width, (unsigned)2048);
423 fb_height = min(vmw_priv->fb_max_height, (unsigned)2048);
425 initial_width = min(vmw_priv->initial_width, fb_width);
426 initial_height = min(vmw_priv->initial_height, fb_height);
428 fb_pitch = fb_width * fb_bpp / 8;
429 fb_size = fb_pitch * fb_height;
430 fb_offset = vmw_read(vmw_priv, SVGA_REG_FB_OFFSET);
432 info = framebuffer_alloc(sizeof(*par), device);
439 vmw_priv->fb_info = info;
441 par->vmw_priv = vmw_priv;
442 par->depth = fb_depth;
445 par->max_width = fb_width;
446 par->max_height = fb_height;
449 * Create buffers and alloc memory
451 par->vmalloc = vmalloc(fb_size);
452 if (unlikely(par->vmalloc == NULL)) {
457 ret = vmw_fb_create_bo(vmw_priv, fb_size, &par->vmw_bo);
458 if (unlikely(ret != 0))
461 ret = ttm_bo_kmap(&par->vmw_bo->base,
463 par->vmw_bo->base.num_pages,
465 if (unlikely(ret != 0))
467 par->bo_ptr = ttm_kmap_obj_virtual(&par->map, &par->bo_iowrite);
468 par->bo_size = fb_size;
473 strcpy(info->fix.id, "svgadrmfb");
474 info->fix.type = FB_TYPE_PACKED_PIXELS;
475 info->fix.visual = FB_VISUAL_TRUECOLOR;
476 info->fix.type_aux = 0;
477 info->fix.xpanstep = 1; /* doing it in hw */
478 info->fix.ypanstep = 1; /* doing it in hw */
479 info->fix.ywrapstep = 0;
480 info->fix.accel = FB_ACCEL_NONE;
481 info->fix.line_length = fb_pitch;
483 info->fix.smem_start = 0;
484 info->fix.smem_len = fb_size;
486 info->pseudo_palette = par->pseudo_palette;
487 info->screen_base = par->vmalloc;
488 info->screen_size = fb_size;
490 info->flags = FBINFO_DEFAULT;
491 info->fbops = &vmw_fb_ops;
493 /* 24 depth per default */
494 info->var.red.offset = 16;
495 info->var.green.offset = 8;
496 info->var.blue.offset = 0;
497 info->var.red.length = 8;
498 info->var.green.length = 8;
499 info->var.blue.length = 8;
500 info->var.transp.offset = 0;
501 info->var.transp.length = 0;
503 info->var.xres_virtual = fb_width;
504 info->var.yres_virtual = fb_height;
505 info->var.bits_per_pixel = par->bpp;
506 info->var.xoffset = 0;
507 info->var.yoffset = 0;
508 info->var.activate = FB_ACTIVATE_NOW;
509 info->var.height = -1;
510 info->var.width = -1;
512 info->var.xres = initial_width;
513 info->var.yres = initial_height;
515 /* Use default scratch pixmap (info->pixmap.flags = FB_PIXMAP_SYSTEM) */
517 info->apertures = alloc_apertures(1);
518 if (!info->apertures) {
522 info->apertures->ranges[0].base = vmw_priv->vram_start;
523 info->apertures->ranges[0].size = vmw_priv->vram_size;
526 * Dirty & Deferred IO
528 par->dirty.x1 = par->dirty.x2 = 0;
529 par->dirty.y1 = par->dirty.y2 = 0;
530 par->dirty.active = true;
531 spin_lock_init(&par->dirty.lock);
532 info->fbdefio = &vmw_defio;
533 fb_deferred_io_init(info);
535 ret = register_framebuffer(info);
536 if (unlikely(ret != 0))
542 fb_deferred_io_cleanup(info);
544 ttm_bo_kunmap(&par->map);
546 ttm_bo_unref((struct ttm_buffer_object **)&par->vmw_bo);
549 framebuffer_release(info);
550 vmw_priv->fb_info = NULL;
555 int vmw_fb_close(struct vmw_private *vmw_priv)
557 struct fb_info *info;
558 struct vmw_fb_par *par;
559 struct ttm_buffer_object *bo;
561 if (!vmw_priv->fb_info)
564 info = vmw_priv->fb_info;
566 bo = &par->vmw_bo->base;
570 fb_deferred_io_cleanup(info);
571 unregister_framebuffer(info);
573 ttm_bo_kunmap(&par->map);
577 framebuffer_release(info);
582 int vmw_fb_off(struct vmw_private *vmw_priv)
584 struct fb_info *info;
585 struct vmw_fb_par *par;
588 if (!vmw_priv->fb_info)
591 info = vmw_priv->fb_info;
594 spin_lock_irqsave(&par->dirty.lock, flags);
595 par->dirty.active = false;
596 spin_unlock_irqrestore(&par->dirty.lock, flags);
598 flush_delayed_work(&info->deferred_work);
601 ttm_bo_kunmap(&par->map);
603 vmw_dmabuf_unpin(vmw_priv, par->vmw_bo, false);
608 int vmw_fb_on(struct vmw_private *vmw_priv)
610 struct fb_info *info;
611 struct vmw_fb_par *par;
616 if (!vmw_priv->fb_info)
619 info = vmw_priv->fb_info;
622 /* we are already active */
623 if (par->bo_ptr != NULL)
626 /* Make sure that all overlays are stoped when we take over */
627 vmw_overlay_stop_all(vmw_priv);
629 ret = vmw_dmabuf_to_start_of_vram(vmw_priv, par->vmw_bo, true, false);
630 if (unlikely(ret != 0)) {
631 DRM_ERROR("could not move buffer to start of VRAM\n");
635 ret = ttm_bo_kmap(&par->vmw_bo->base,
637 par->vmw_bo->base.num_pages,
640 par->bo_ptr = ttm_kmap_obj_virtual(&par->map, &dummy);
642 spin_lock_irqsave(&par->dirty.lock, flags);
643 par->dirty.active = true;
644 spin_unlock_irqrestore(&par->dirty.lock, flags);
647 vmw_fb_set_par(info);
649 vmw_fb_dirty_mark(par, 0, 0, info->var.xres, info->var.yres);
651 /* If there already was stuff dirty we wont
652 * schedule a new work, so lets do it now */
653 schedule_delayed_work(&info->deferred_work, 0);