/************************************************************************** * * Copyright © 2007 David Airlie * Copyright © 2009-2015 VMware, Inc., Palo Alto, CA., USA * All Rights Reserved. * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the * "Software"), to deal in the Software without restriction, including * without limitation the rights to use, copy, modify, merge, publish, * distribute, sub license, and/or sell copies of the Software, and to * permit persons to whom the Software is furnished to do so, subject to * the following conditions: * * The above copyright notice and this permission notice (including the * next paragraph) shall be included in all copies or substantial portions * of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE * USE OR OTHER DEALINGS IN THE SOFTWARE. * **************************************************************************/ #include <linux/export.h> #include <drm/drmP.h> #include "vmwgfx_drv.h" #include "vmwgfx_kms.h" #include <drm/ttm/ttm_placement.h> #define VMW_DIRTY_DELAY (HZ / 30) struct vmw_fb_par { struct vmw_private *vmw_priv; void *vmalloc; struct mutex bo_mutex; struct vmw_dma_buffer *vmw_bo; struct ttm_bo_kmap_obj map; void *bo_ptr; unsigned bo_size; struct drm_framebuffer *set_fb; struct drm_display_mode *set_mode; u32 fb_x; u32 fb_y; bool bo_iowrite; u32 pseudo_palette[17]; unsigned max_width; unsigned max_height; struct { spinlock_t lock; bool active; unsigned x1; unsigned y1; unsigned x2; unsigned y2; } dirty; struct drm_crtc *crtc; struct drm_connector *con; struct delayed_work local_work; }; static int vmw_fb_setcolreg(unsigned regno, unsigned red, unsigned green, unsigned blue, unsigned transp, struct fb_info *info) { struct vmw_fb_par *par = info->par; u32 *pal = par->pseudo_palette; if (regno > 15) { DRM_ERROR("Bad regno %u.\n", regno); return 1; } switch (par->set_fb->depth) { case 24: case 32: pal[regno] = ((red & 0xff00) << 8) | (green & 0xff00) | ((blue & 0xff00) >> 8); break; default: DRM_ERROR("Bad depth %u, bpp %u.\n", par->set_fb->depth, par->set_fb->bits_per_pixel); return 1; } return 0; } static int vmw_fb_check_var(struct fb_var_screeninfo *var, struct fb_info *info) { int depth = var->bits_per_pixel; struct vmw_fb_par *par = info->par; struct vmw_private *vmw_priv = par->vmw_priv; switch (var->bits_per_pixel) { case 32: depth = (var->transp.length > 0) ? 32 : 24; break; default: DRM_ERROR("Bad bpp %u.\n", var->bits_per_pixel); return -EINVAL; } switch (depth) { case 24: var->red.offset = 16; var->green.offset = 8; var->blue.offset = 0; var->red.length = 8; var->green.length = 8; var->blue.length = 8; var->transp.length = 0; var->transp.offset = 0; break; case 32: var->red.offset = 16; var->green.offset = 8; var->blue.offset = 0; var->red.length = 8; var->green.length = 8; var->blue.length = 8; var->transp.length = 8; var->transp.offset = 24; break; default: DRM_ERROR("Bad depth %u.\n", depth); return -EINVAL; } if ((var->xoffset + var->xres) > par->max_width || (var->yoffset + var->yres) > par->max_height) { DRM_ERROR("Requested geom can not fit in framebuffer\n"); return -EINVAL; } if (!vmw_kms_validate_mode_vram(vmw_priv, var->xres * var->bits_per_pixel/8, var->yoffset + var->yres)) { DRM_ERROR("Requested geom can not fit in framebuffer\n"); return -EINVAL; } return 0; } static int vmw_fb_blank(int blank, struct fb_info *info) { return 0; } /* * Dirty code */ static void vmw_fb_dirty_flush(struct work_struct *work) { struct vmw_fb_par *par = container_of(work, struct vmw_fb_par, local_work.work); struct vmw_private *vmw_priv = par->vmw_priv; struct fb_info *info = vmw_priv->fb_info; unsigned long irq_flags; s32 dst_x1, dst_x2, dst_y1, dst_y2, w, h; u32 cpp, max_x, max_y; struct drm_clip_rect clip; struct drm_framebuffer *cur_fb; u8 *src_ptr, *dst_ptr; if (vmw_priv->suspended) return; mutex_lock(&par->bo_mutex); cur_fb = par->set_fb; if (!cur_fb) goto out_unlock; spin_lock_irqsave(&par->dirty.lock, irq_flags); if (!par->dirty.active) { spin_unlock_irqrestore(&par->dirty.lock, irq_flags); goto out_unlock; } /* * Handle panning when copying from vmalloc to framebuffer. * Clip dirty area to framebuffer. */ cpp = (cur_fb->bits_per_pixel + 7) / 8; max_x = par->fb_x + cur_fb->width; max_y = par->fb_y + cur_fb->height; dst_x1 = par->dirty.x1 - par->fb_x; dst_y1 = par->dirty.y1 - par->fb_y; dst_x1 = max_t(s32, dst_x1, 0); dst_y1 = max_t(s32, dst_y1, 0); dst_x2 = par->dirty.x2 - par->fb_x; dst_y2 = par->dirty.y2 - par->fb_y; dst_x2 = min_t(s32, dst_x2, max_x); dst_y2 = min_t(s32, dst_y2, max_y); w = dst_x2 - dst_x1; h = dst_y2 - dst_y1; w = max_t(s32, 0, w); h = max_t(s32, 0, h); par->dirty.x1 = par->dirty.x2 = 0; par->dirty.y1 = par->dirty.y2 = 0; spin_unlock_irqrestore(&par->dirty.lock, irq_flags); if (w && h) { dst_ptr = (u8 *)par->bo_ptr + (dst_y1 * par->set_fb->pitches[0] + dst_x1 * cpp); src_ptr = (u8 *)par->vmalloc + ((dst_y1 + par->fb_y) * info->fix.line_length + (dst_x1 + par->fb_x) * cpp); while (h-- > 0) { memcpy(dst_ptr, src_ptr, w*cpp); dst_ptr += par->set_fb->pitches[0]; src_ptr += info->fix.line_length; } clip.x1 = dst_x1; clip.x2 = dst_x2; clip.y1 = dst_y1; clip.y2 = dst_y2; WARN_ON_ONCE(par->set_fb->funcs->dirty(cur_fb, NULL, 0, 0, &clip, 1)); vmw_fifo_flush(vmw_priv, false); } out_unlock: mutex_unlock(&par->bo_mutex); } static void vmw_fb_dirty_mark(struct vmw_fb_par *par, unsigned x1, unsigned y1, unsigned width, unsigned height) { unsigned long flags; unsigned x2 = x1 + width; unsigned y2 = y1 + height; spin_lock_irqsave(&par->dirty.lock, flags); if (par->dirty.x1 == par->dirty.x2) { par->dirty.x1 = x1; par->dirty.y1 = y1; par->dirty.x2 = x2; par->dirty.y2 = y2; /* if we are active start the dirty work * we share the work with the defio system */ if (par->dirty.active) schedule_delayed_work(&par->local_work, VMW_DIRTY_DELAY); } else { if (x1 < par->dirty.x1) par->dirty.x1 = x1; if (y1 < par->dirty.y1) par->dirty.y1 = y1; if (x2 > par->dirty.x2) par->dirty.x2 = x2; if (y2 > par->dirty.y2) par->dirty.y2 = y2; } spin_unlock_irqrestore(&par->dirty.lock, flags); } static int vmw_fb_pan_display(struct fb_var_screeninfo *var, struct fb_info *info) { struct vmw_fb_par *par = info->par; if ((var->xoffset + var->xres) > var->xres_virtual || (var->yoffset + var->yres) > var->yres_virtual) { DRM_ERROR("Requested panning can not fit in framebuffer\n"); return -EINVAL; } mutex_lock(&par->bo_mutex); par->fb_x = var->xoffset; par->fb_y = var->yoffset; if (par->set_fb) vmw_fb_dirty_mark(par, par->fb_x, par->fb_y, par->set_fb->width, par->set_fb->height); mutex_unlock(&par->bo_mutex); return 0; } static void vmw_deferred_io(struct fb_info *info, struct list_head *pagelist) { struct vmw_fb_par *par = info->par; unsigned long start, end, min, max; unsigned long flags; struct page *page; int y1, y2; min = ULONG_MAX; max = 0; list_for_each_entry(page, pagelist, lru) { start = page->index << PAGE_SHIFT; end = start + PAGE_SIZE - 1; min = min(min, start); max = max(max, end); } if (min < max) { y1 = min / info->fix.line_length; y2 = (max / info->fix.line_length) + 1; spin_lock_irqsave(&par->dirty.lock, flags); par->dirty.x1 = 0; par->dirty.y1 = y1; par->dirty.x2 = info->var.xres; par->dirty.y2 = y2; spin_unlock_irqrestore(&par->dirty.lock, flags); /* * Since we've already waited on this work once, try to * execute asap. */ cancel_delayed_work(&par->local_work); schedule_delayed_work(&par->local_work, 0); } }; static struct fb_deferred_io vmw_defio = { .delay = VMW_DIRTY_DELAY, .deferred_io = vmw_deferred_io, }; /* * Draw code */ static void vmw_fb_fillrect(struct fb_info *info, const struct fb_fillrect *rect) { cfb_fillrect(info, rect); vmw_fb_dirty_mark(info->par, rect->dx, rect->dy, rect->width, rect->height); } static void vmw_fb_copyarea(struct fb_info *info, const struct fb_copyarea *region) { cfb_copyarea(info, region); vmw_fb_dirty_mark(info->par, region->dx, region->dy, region->width, region->height); } static void vmw_fb_imageblit(struct fb_info *info, const struct fb_image *image) { cfb_imageblit(info, image); vmw_fb_dirty_mark(info->par, image->dx, image->dy, image->width, image->height); } /* * Bring up code */ static int vmw_fb_create_bo(struct vmw_private *vmw_priv, size_t size, struct vmw_dma_buffer **out) { struct vmw_dma_buffer *vmw_bo; int ret; (void) ttm_write_lock(&vmw_priv->reservation_sem, false); vmw_bo = kmalloc(sizeof(*vmw_bo), GFP_KERNEL); if (!vmw_bo) { ret = -ENOMEM; goto err_unlock; } ret = vmw_dmabuf_init(vmw_priv, vmw_bo, size, &vmw_sys_placement, false, &vmw_dmabuf_bo_free); if (unlikely(ret != 0)) goto err_unlock; /* init frees the buffer on failure */ *out = vmw_bo; ttm_write_unlock(&vmw_priv->reservation_sem); return 0; err_unlock: ttm_write_unlock(&vmw_priv->reservation_sem); return ret; } static int vmw_fb_compute_depth(struct fb_var_screeninfo *var, int *depth) { switch (var->bits_per_pixel) { case 32: *depth = (var->transp.length > 0) ? 32 : 24; break; default: DRM_ERROR("Bad bpp %u.\n", var->bits_per_pixel); return -EINVAL; } return 0; } static int vmw_fb_kms_detach(struct vmw_fb_par *par, bool detach_bo, bool unref_bo) { struct drm_framebuffer *cur_fb = par->set_fb; int ret; /* Detach the KMS framebuffer from crtcs */ if (par->set_mode) { struct drm_mode_set set; set.crtc = par->crtc; set.x = 0; set.y = 0; set.mode = NULL; set.fb = NULL; set.num_connectors = 1; set.connectors = &par->con; ret = drm_mode_set_config_internal(&set); if (ret) { DRM_ERROR("Could not unset a mode.\n"); return ret; } drm_mode_destroy(par->vmw_priv->dev, par->set_mode); par->set_mode = NULL; } if (cur_fb) { drm_framebuffer_unreference(cur_fb); par->set_fb = NULL; } if (par->vmw_bo && detach_bo) { if (par->bo_ptr) { ttm_bo_kunmap(&par->map); par->bo_ptr = NULL; } if (unref_bo) vmw_dmabuf_unreference(&par->vmw_bo); else vmw_dmabuf_unpin(par->vmw_priv, par->vmw_bo, false); } return 0; } static int vmw_fb_kms_framebuffer(struct fb_info *info) { struct drm_mode_fb_cmd2 mode_cmd; struct vmw_fb_par *par = info->par; struct fb_var_screeninfo *var = &info->var; struct drm_framebuffer *cur_fb; struct vmw_framebuffer *vfb; int ret = 0, depth; size_t new_bo_size; ret = vmw_fb_compute_depth(var, &depth); if (ret) return ret; mode_cmd.width = var->xres; mode_cmd.height = var->yres; mode_cmd.pitches[0] = ((var->bits_per_pixel + 7) / 8) * mode_cmd.width; mode_cmd.pixel_format = drm_mode_legacy_fb_format(var->bits_per_pixel, ((var->bits_per_pixel + 7) / 8) * mode_cmd.width); cur_fb = par->set_fb; if (cur_fb && cur_fb->width == mode_cmd.width && cur_fb->height == mode_cmd.height && cur_fb->pixel_format == mode_cmd.pixel_format && cur_fb->pitches[0] == mode_cmd.pitches[0]) return 0; /* Need new buffer object ? */ new_bo_size = (size_t) mode_cmd.pitches[0] * (size_t) mode_cmd.height; ret = vmw_fb_kms_detach(par, par->bo_size < new_bo_size || par->bo_size > 2*new_bo_size, true); if (ret) return ret; if (!par->vmw_bo) { ret = vmw_fb_create_bo(par->vmw_priv, new_bo_size, &par->vmw_bo); if (ret) { DRM_ERROR("Failed creating a buffer object for " "fbdev.\n"); return ret; } par->bo_size = new_bo_size; } vfb = vmw_kms_new_framebuffer(par->vmw_priv, par->vmw_bo, NULL, true, &mode_cmd); if (IS_ERR(vfb)) return PTR_ERR(vfb); par->set_fb = &vfb->base; return 0; } static int vmw_fb_set_par(struct fb_info *info) { struct vmw_fb_par *par = info->par; struct vmw_private *vmw_priv = par->vmw_priv; struct drm_mode_set set; struct fb_var_screeninfo *var = &info->var; struct drm_display_mode new_mode = { DRM_MODE("fb_mode", DRM_MODE_TYPE_DRIVER, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) }; struct drm_display_mode *old_mode; struct drm_display_mode *mode; int ret; old_mode = par->set_mode; mode = drm_mode_duplicate(vmw_priv->dev, &new_mode); if (!mode) { DRM_ERROR("Could not create new fb mode.\n"); return -ENOMEM; } mode->hdisplay = var->xres; mode->vdisplay = var->yres; vmw_guess_mode_timing(mode); if (old_mode && drm_mode_equal(old_mode, mode)) { drm_mode_destroy(vmw_priv->dev, mode); mode = old_mode; old_mode = NULL; } else if (!vmw_kms_validate_mode_vram(vmw_priv, mode->hdisplay * DIV_ROUND_UP(var->bits_per_pixel, 8), mode->vdisplay)) { drm_mode_destroy(vmw_priv->dev, mode); return -EINVAL; } mutex_lock(&par->bo_mutex); drm_modeset_lock_all(vmw_priv->dev); ret = vmw_fb_kms_framebuffer(info); if (ret) goto out_unlock; par->fb_x = var->xoffset; par->fb_y = var->yoffset; set.crtc = par->crtc; set.x = 0; set.y = 0; set.mode = mode; set.fb = par->set_fb; set.num_connectors = 1; set.connectors = &par->con; ret = drm_mode_set_config_internal(&set); if (ret) goto out_unlock; if (!par->bo_ptr) { struct vmw_framebuffer *vfb = vmw_framebuffer_to_vfb(set.fb); /* * Pin before mapping. Since we don't know in what placement * to pin, call into KMS to do it for us. */ ret = vfb->pin(vfb); if (ret) { DRM_ERROR("Could not pin the fbdev framebuffer.\n"); goto out_unlock; } ret = ttm_bo_kmap(&par->vmw_bo->base, 0, par->vmw_bo->base.num_pages, &par->map); if (ret) { vfb->unpin(vfb); DRM_ERROR("Could not map the fbdev framebuffer.\n"); goto out_unlock; } par->bo_ptr = ttm_kmap_obj_virtual(&par->map, &par->bo_iowrite); } vmw_fb_dirty_mark(par, par->fb_x, par->fb_y, par->set_fb->width, par->set_fb->height); /* If there already was stuff dirty we wont * schedule a new work, so lets do it now */ schedule_delayed_work(&par->local_work, 0); out_unlock: if (old_mode) drm_mode_destroy(vmw_priv->dev, old_mode); par->set_mode = mode; drm_modeset_unlock_all(vmw_priv->dev); mutex_unlock(&par->bo_mutex); return ret; } static struct fb_ops vmw_fb_ops = { .owner = THIS_MODULE, .fb_check_var = vmw_fb_check_var, .fb_set_par = vmw_fb_set_par, .fb_setcolreg = vmw_fb_setcolreg, .fb_fillrect = vmw_fb_fillrect, .fb_copyarea = vmw_fb_copyarea, .fb_imageblit = vmw_fb_imageblit, .fb_pan_display = vmw_fb_pan_display, .fb_blank = vmw_fb_blank, }; int vmw_fb_init(struct vmw_private *vmw_priv) { struct device *device = &vmw_priv->dev->pdev->dev; struct vmw_fb_par *par; struct fb_info *info; unsigned fb_width, fb_height; unsigned fb_bpp, fb_depth, fb_offset, fb_pitch, fb_size; struct drm_display_mode *init_mode; int ret; fb_bpp = 32; fb_depth = 24; /* XXX As shouldn't these be as well. */ fb_width = min(vmw_priv->fb_max_width, (unsigned)2048); fb_height = min(vmw_priv->fb_max_height, (unsigned)2048); fb_pitch = fb_width * fb_bpp / 8; fb_size = fb_pitch * fb_height; fb_offset = vmw_read(vmw_priv, SVGA_REG_FB_OFFSET); info = framebuffer_alloc(sizeof(*par), device); if (!info) return -ENOMEM; /* * Par */ vmw_priv->fb_info = info; par = info->par; memset(par, 0, sizeof(*par)); INIT_DELAYED_WORK(&par->local_work, &vmw_fb_dirty_flush); par->vmw_priv = vmw_priv; par->vmalloc = NULL; par->max_width = fb_width; par->max_height = fb_height; drm_modeset_lock_all(vmw_priv->dev); ret = vmw_kms_fbdev_init_data(vmw_priv, 0, par->max_width, par->max_height, &par->con, &par->crtc, &init_mode); if (ret) { drm_modeset_unlock_all(vmw_priv->dev); goto err_kms; } info->var.xres = init_mode->hdisplay; info->var.yres = init_mode->vdisplay; drm_modeset_unlock_all(vmw_priv->dev); /* * Create buffers and alloc memory */ par->vmalloc = vzalloc(fb_size); if (unlikely(par->vmalloc == NULL)) { ret = -ENOMEM; goto err_free; } /* * Fixed and var */ strcpy(info->fix.id, "svgadrmfb"); info->fix.type = FB_TYPE_PACKED_PIXELS; info->fix.visual = FB_VISUAL_TRUECOLOR; info->fix.type_aux = 0; info->fix.xpanstep = 1; /* doing it in hw */ info->fix.ypanstep = 1; /* doing it in hw */ info->fix.ywrapstep = 0; info->fix.accel = FB_ACCEL_NONE; info->fix.line_length = fb_pitch; info->fix.smem_start = 0; info->fix.smem_len = fb_size; info->pseudo_palette = par->pseudo_palette; info->screen_base = (char __iomem *)par->vmalloc; info->screen_size = fb_size; info->flags = FBINFO_DEFAULT; info->fbops = &vmw_fb_ops; /* 24 depth per default */ info->var.red.offset = 16; info->var.green.offset = 8; info->var.blue.offset = 0; info->var.red.length = 8; info->var.green.length = 8; info->var.blue.length = 8; info->var.transp.offset = 0; info->var.transp.length = 0; info->var.xres_virtual = fb_width; info->var.yres_virtual = fb_height; info->var.bits_per_pixel = fb_bpp; info->var.xoffset = 0; info->var.yoffset = 0; info->var.activate = FB_ACTIVATE_NOW; info->var.height = -1; info->var.width = -1; /* Use default scratch pixmap (info->pixmap.flags = FB_PIXMAP_SYSTEM) */ info->apertures = alloc_apertures(1); if (!info->apertures) { ret = -ENOMEM; goto err_aper; } info->apertures->ranges[0].base = vmw_priv->vram_start; info->apertures->ranges[0].size = vmw_priv->vram_size; /* * Dirty & Deferred IO */ par->dirty.x1 = par->dirty.x2 = 0; par->dirty.y1 = par->dirty.y2 = 0; par->dirty.active = true; spin_lock_init(&par->dirty.lock); mutex_init(&par->bo_mutex); info->fbdefio = &vmw_defio; fb_deferred_io_init(info); ret = register_framebuffer(info); if (unlikely(ret != 0)) goto err_defio; vmw_fb_set_par(info); return 0; err_defio: fb_deferred_io_cleanup(info); err_aper: err_free: vfree(par->vmalloc); err_kms: framebuffer_release(info); vmw_priv->fb_info = NULL; return ret; } int vmw_fb_close(struct vmw_private *vmw_priv) { struct fb_info *info; struct vmw_fb_par *par; if (!vmw_priv->fb_info) return 0; info = vmw_priv->fb_info; par = info->par; /* ??? order */ fb_deferred_io_cleanup(info); cancel_delayed_work_sync(&par->local_work); unregister_framebuffer(info); (void) vmw_fb_kms_detach(par, true, true); vfree(par->vmalloc); framebuffer_release(info); return 0; } int vmw_fb_off(struct vmw_private *vmw_priv) { struct fb_info *info; struct vmw_fb_par *par; unsigned long flags; if (!vmw_priv->fb_info) return -EINVAL; info = vmw_priv->fb_info; par = info->par; spin_lock_irqsave(&par->dirty.lock, flags); par->dirty.active = false; spin_unlock_irqrestore(&par->dirty.lock, flags); flush_delayed_work(&info->deferred_work); flush_delayed_work(&par->local_work); mutex_lock(&par->bo_mutex); (void) vmw_fb_kms_detach(par, true, false); mutex_unlock(&par->bo_mutex); return 0; } int vmw_fb_on(struct vmw_private *vmw_priv) { struct fb_info *info; struct vmw_fb_par *par; unsigned long flags; if (!vmw_priv->fb_info) return -EINVAL; info = vmw_priv->fb_info; par = info->par; vmw_fb_set_par(info); spin_lock_irqsave(&par->dirty.lock, flags); par->dirty.active = true; spin_unlock_irqrestore(&par->dirty.lock, flags); return 0; }