X-Git-Url: https://gerrit.opnfv.org/gerrit/gitweb?a=blobdiff_plain;f=kernel%2Fdrivers%2Fgpu%2Fdrm%2Fnouveau%2Fnouveau_fbcon.c;fp=kernel%2Fdrivers%2Fgpu%2Fdrm%2Fnouveau%2Fnouveau_fbcon.c;h=6751553abe4afe4bc408cd08863a7981b858bece;hb=9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00;hp=0000000000000000000000000000000000000000;hpb=98260f3884f4a202f9ca5eabed40b1354c489b29;p=kvmfornfv.git diff --git a/kernel/drivers/gpu/drm/nouveau/nouveau_fbcon.c b/kernel/drivers/gpu/drm/nouveau/nouveau_fbcon.c new file mode 100644 index 000000000..6751553ab --- /dev/null +++ b/kernel/drivers/gpu/drm/nouveau/nouveau_fbcon.c @@ -0,0 +1,572 @@ +/* + * Copyright © 2007 David Airlie + * + * 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, sublicense, + * 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 NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS 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. + * + * Authors: + * David Airlie + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include +#include + +#include "nouveau_drm.h" +#include "nouveau_gem.h" +#include "nouveau_bo.h" +#include "nouveau_fbcon.h" +#include "nouveau_chan.h" + +#include "nouveau_crtc.h" + +MODULE_PARM_DESC(nofbaccel, "Disable fbcon acceleration"); +int nouveau_nofbaccel = 0; +module_param_named(nofbaccel, nouveau_nofbaccel, int, 0400); + +static void +nouveau_fbcon_fillrect(struct fb_info *info, const struct fb_fillrect *rect) +{ + struct nouveau_fbdev *fbcon = info->par; + struct nouveau_drm *drm = nouveau_drm(fbcon->dev); + struct nvif_device *device = &drm->device; + int ret; + + if (info->state != FBINFO_STATE_RUNNING) + return; + + ret = -ENODEV; + if (!in_interrupt() && !(info->flags & FBINFO_HWACCEL_DISABLED) && + mutex_trylock(&drm->client.mutex)) { + if (device->info.family < NV_DEVICE_INFO_V0_TESLA) + ret = nv04_fbcon_fillrect(info, rect); + else + if (device->info.family < NV_DEVICE_INFO_V0_FERMI) + ret = nv50_fbcon_fillrect(info, rect); + else + ret = nvc0_fbcon_fillrect(info, rect); + mutex_unlock(&drm->client.mutex); + } + + if (ret == 0) + return; + + if (ret != -ENODEV) + nouveau_fbcon_gpu_lockup(info); + cfb_fillrect(info, rect); +} + +static void +nouveau_fbcon_copyarea(struct fb_info *info, const struct fb_copyarea *image) +{ + struct nouveau_fbdev *fbcon = info->par; + struct nouveau_drm *drm = nouveau_drm(fbcon->dev); + struct nvif_device *device = &drm->device; + int ret; + + if (info->state != FBINFO_STATE_RUNNING) + return; + + ret = -ENODEV; + if (!in_interrupt() && !(info->flags & FBINFO_HWACCEL_DISABLED) && + mutex_trylock(&drm->client.mutex)) { + if (device->info.family < NV_DEVICE_INFO_V0_TESLA) + ret = nv04_fbcon_copyarea(info, image); + else + if (device->info.family < NV_DEVICE_INFO_V0_FERMI) + ret = nv50_fbcon_copyarea(info, image); + else + ret = nvc0_fbcon_copyarea(info, image); + mutex_unlock(&drm->client.mutex); + } + + if (ret == 0) + return; + + if (ret != -ENODEV) + nouveau_fbcon_gpu_lockup(info); + cfb_copyarea(info, image); +} + +static void +nouveau_fbcon_imageblit(struct fb_info *info, const struct fb_image *image) +{ + struct nouveau_fbdev *fbcon = info->par; + struct nouveau_drm *drm = nouveau_drm(fbcon->dev); + struct nvif_device *device = &drm->device; + int ret; + + if (info->state != FBINFO_STATE_RUNNING) + return; + + ret = -ENODEV; + if (!in_interrupt() && !(info->flags & FBINFO_HWACCEL_DISABLED) && + mutex_trylock(&drm->client.mutex)) { + if (device->info.family < NV_DEVICE_INFO_V0_TESLA) + ret = nv04_fbcon_imageblit(info, image); + else + if (device->info.family < NV_DEVICE_INFO_V0_FERMI) + ret = nv50_fbcon_imageblit(info, image); + else + ret = nvc0_fbcon_imageblit(info, image); + mutex_unlock(&drm->client.mutex); + } + + if (ret == 0) + return; + + if (ret != -ENODEV) + nouveau_fbcon_gpu_lockup(info); + cfb_imageblit(info, image); +} + +static int +nouveau_fbcon_sync(struct fb_info *info) +{ + struct nouveau_fbdev *fbcon = info->par; + struct nouveau_drm *drm = nouveau_drm(fbcon->dev); + struct nouveau_channel *chan = drm->channel; + int ret; + + if (!chan || !chan->accel_done || in_interrupt() || + info->state != FBINFO_STATE_RUNNING || + info->flags & FBINFO_HWACCEL_DISABLED) + return 0; + + if (!mutex_trylock(&drm->client.mutex)) + return 0; + + ret = nouveau_channel_idle(chan); + mutex_unlock(&drm->client.mutex); + if (ret) { + nouveau_fbcon_gpu_lockup(info); + return 0; + } + + chan->accel_done = false; + return 0; +} + +static struct fb_ops nouveau_fbcon_ops = { + .owner = THIS_MODULE, + .fb_check_var = drm_fb_helper_check_var, + .fb_set_par = drm_fb_helper_set_par, + .fb_fillrect = nouveau_fbcon_fillrect, + .fb_copyarea = nouveau_fbcon_copyarea, + .fb_imageblit = nouveau_fbcon_imageblit, + .fb_sync = nouveau_fbcon_sync, + .fb_pan_display = drm_fb_helper_pan_display, + .fb_blank = drm_fb_helper_blank, + .fb_setcmap = drm_fb_helper_setcmap, + .fb_debug_enter = drm_fb_helper_debug_enter, + .fb_debug_leave = drm_fb_helper_debug_leave, +}; + +static struct fb_ops nouveau_fbcon_sw_ops = { + .owner = THIS_MODULE, + .fb_check_var = drm_fb_helper_check_var, + .fb_set_par = drm_fb_helper_set_par, + .fb_fillrect = cfb_fillrect, + .fb_copyarea = cfb_copyarea, + .fb_imageblit = cfb_imageblit, + .fb_pan_display = drm_fb_helper_pan_display, + .fb_blank = drm_fb_helper_blank, + .fb_setcmap = drm_fb_helper_setcmap, + .fb_debug_enter = drm_fb_helper_debug_enter, + .fb_debug_leave = drm_fb_helper_debug_leave, +}; + +void +nouveau_fbcon_accel_save_disable(struct drm_device *dev) +{ + struct nouveau_drm *drm = nouveau_drm(dev); + if (drm->fbcon) { + drm->fbcon->saved_flags = drm->fbcon->helper.fbdev->flags; + drm->fbcon->helper.fbdev->flags |= FBINFO_HWACCEL_DISABLED; + } +} + +void +nouveau_fbcon_accel_restore(struct drm_device *dev) +{ + struct nouveau_drm *drm = nouveau_drm(dev); + if (drm->fbcon) { + drm->fbcon->helper.fbdev->flags = drm->fbcon->saved_flags; + } +} + +static void +nouveau_fbcon_accel_fini(struct drm_device *dev) +{ + struct nouveau_drm *drm = nouveau_drm(dev); + struct nouveau_fbdev *fbcon = drm->fbcon; + if (fbcon && drm->channel) { + console_lock(); + fbcon->helper.fbdev->flags |= FBINFO_HWACCEL_DISABLED; + console_unlock(); + nouveau_channel_idle(drm->channel); + nvif_object_fini(&fbcon->twod); + nvif_object_fini(&fbcon->blit); + nvif_object_fini(&fbcon->gdi); + nvif_object_fini(&fbcon->patt); + nvif_object_fini(&fbcon->rop); + nvif_object_fini(&fbcon->clip); + nvif_object_fini(&fbcon->surf2d); + } +} + +static void +nouveau_fbcon_accel_init(struct drm_device *dev) +{ + struct nouveau_drm *drm = nouveau_drm(dev); + struct nouveau_fbdev *fbcon = drm->fbcon; + struct fb_info *info = fbcon->helper.fbdev; + int ret; + + if (drm->device.info.family < NV_DEVICE_INFO_V0_TESLA) + ret = nv04_fbcon_accel_init(info); + else + if (drm->device.info.family < NV_DEVICE_INFO_V0_FERMI) + ret = nv50_fbcon_accel_init(info); + else + ret = nvc0_fbcon_accel_init(info); + + if (ret == 0) + info->fbops = &nouveau_fbcon_ops; +} + +static void nouveau_fbcon_gamma_set(struct drm_crtc *crtc, u16 red, u16 green, + u16 blue, int regno) +{ + struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc); + + nv_crtc->lut.r[regno] = red; + nv_crtc->lut.g[regno] = green; + nv_crtc->lut.b[regno] = blue; +} + +static void nouveau_fbcon_gamma_get(struct drm_crtc *crtc, u16 *red, u16 *green, + u16 *blue, int regno) +{ + struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc); + + *red = nv_crtc->lut.r[regno]; + *green = nv_crtc->lut.g[regno]; + *blue = nv_crtc->lut.b[regno]; +} + +static void +nouveau_fbcon_zfill(struct drm_device *dev, struct nouveau_fbdev *fbcon) +{ + struct fb_info *info = fbcon->helper.fbdev; + struct fb_fillrect rect; + + /* Clear the entire fbcon. The drm will program every connector + * with it's preferred mode. If the sizes differ, one display will + * quite likely have garbage around the console. + */ + rect.dx = rect.dy = 0; + rect.width = info->var.xres_virtual; + rect.height = info->var.yres_virtual; + rect.color = 0; + rect.rop = ROP_COPY; + info->fbops->fb_fillrect(info, &rect); +} + +static int +nouveau_fbcon_create(struct drm_fb_helper *helper, + struct drm_fb_helper_surface_size *sizes) +{ + struct nouveau_fbdev *fbcon = + container_of(helper, struct nouveau_fbdev, helper); + struct drm_device *dev = fbcon->dev; + struct nouveau_drm *drm = nouveau_drm(dev); + struct nvif_device *device = &drm->device; + struct fb_info *info; + struct drm_framebuffer *fb; + struct nouveau_framebuffer *nouveau_fb; + struct nouveau_channel *chan; + struct nouveau_bo *nvbo; + struct drm_mode_fb_cmd2 mode_cmd; + struct pci_dev *pdev = dev->pdev; + int size, ret; + + mode_cmd.width = sizes->surface_width; + mode_cmd.height = sizes->surface_height; + + mode_cmd.pitches[0] = mode_cmd.width * (sizes->surface_bpp >> 3); + mode_cmd.pitches[0] = roundup(mode_cmd.pitches[0], 256); + + mode_cmd.pixel_format = drm_mode_legacy_fb_format(sizes->surface_bpp, + sizes->surface_depth); + + size = mode_cmd.pitches[0] * mode_cmd.height; + size = roundup(size, PAGE_SIZE); + + ret = nouveau_gem_new(dev, size, 0, NOUVEAU_GEM_DOMAIN_VRAM, + 0, 0x0000, &nvbo); + if (ret) { + NV_ERROR(drm, "failed to allocate framebuffer\n"); + goto out; + } + + ret = nouveau_bo_pin(nvbo, TTM_PL_FLAG_VRAM, false); + if (ret) { + NV_ERROR(drm, "failed to pin fb: %d\n", ret); + goto out_unref; + } + + ret = nouveau_bo_map(nvbo); + if (ret) { + NV_ERROR(drm, "failed to map fb: %d\n", ret); + goto out_unpin; + } + + chan = nouveau_nofbaccel ? NULL : drm->channel; + if (chan && device->info.family >= NV_DEVICE_INFO_V0_TESLA) { + ret = nouveau_bo_vma_add(nvbo, drm->client.vm, + &fbcon->nouveau_fb.vma); + if (ret) { + NV_ERROR(drm, "failed to map fb into chan: %d\n", ret); + chan = NULL; + } + } + + mutex_lock(&dev->struct_mutex); + + info = framebuffer_alloc(0, &pdev->dev); + if (!info) { + ret = -ENOMEM; + goto out_unlock; + } + info->skip_vt_switch = 1; + + ret = fb_alloc_cmap(&info->cmap, 256, 0); + if (ret) { + ret = -ENOMEM; + framebuffer_release(info); + goto out_unlock; + } + + info->par = fbcon; + + nouveau_framebuffer_init(dev, &fbcon->nouveau_fb, &mode_cmd, nvbo); + + nouveau_fb = &fbcon->nouveau_fb; + fb = &nouveau_fb->base; + + /* setup helper */ + fbcon->helper.fb = fb; + fbcon->helper.fbdev = info; + + strcpy(info->fix.id, "nouveaufb"); + if (!chan) + info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_DISABLED; + else + info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_COPYAREA | + FBINFO_HWACCEL_FILLRECT | + FBINFO_HWACCEL_IMAGEBLIT; + info->flags |= FBINFO_CAN_FORCE_OUTPUT; + info->fbops = &nouveau_fbcon_sw_ops; + info->fix.smem_start = nvbo->bo.mem.bus.base + + nvbo->bo.mem.bus.offset; + info->fix.smem_len = size; + + info->screen_base = nvbo_kmap_obj_iovirtual(nouveau_fb->nvbo); + info->screen_size = size; + + drm_fb_helper_fill_fix(info, fb->pitches[0], fb->depth); + drm_fb_helper_fill_var(info, &fbcon->helper, sizes->fb_width, sizes->fb_height); + + /* Use default scratch pixmap (info->pixmap.flags = FB_PIXMAP_SYSTEM) */ + + mutex_unlock(&dev->struct_mutex); + + if (chan) + nouveau_fbcon_accel_init(dev); + nouveau_fbcon_zfill(dev, fbcon); + + /* To allow resizeing without swapping buffers */ + NV_INFO(drm, "allocated %dx%d fb: 0x%llx, bo %p\n", + nouveau_fb->base.width, nouveau_fb->base.height, + nvbo->bo.offset, nvbo); + + vga_switcheroo_client_fb_set(dev->pdev, info); + return 0; + +out_unlock: + mutex_unlock(&dev->struct_mutex); + if (chan) + nouveau_bo_vma_del(nvbo, &fbcon->nouveau_fb.vma); + nouveau_bo_unmap(nvbo); +out_unpin: + nouveau_bo_unpin(nvbo); +out_unref: + nouveau_bo_ref(NULL, &nvbo); +out: + return ret; +} + +void +nouveau_fbcon_output_poll_changed(struct drm_device *dev) +{ + struct nouveau_drm *drm = nouveau_drm(dev); + if (drm->fbcon) + drm_fb_helper_hotplug_event(&drm->fbcon->helper); +} + +static int +nouveau_fbcon_destroy(struct drm_device *dev, struct nouveau_fbdev *fbcon) +{ + struct nouveau_framebuffer *nouveau_fb = &fbcon->nouveau_fb; + struct fb_info *info; + + if (fbcon->helper.fbdev) { + info = fbcon->helper.fbdev; + unregister_framebuffer(info); + if (info->cmap.len) + fb_dealloc_cmap(&info->cmap); + framebuffer_release(info); + } + + if (nouveau_fb->nvbo) { + nouveau_bo_unmap(nouveau_fb->nvbo); + nouveau_bo_vma_del(nouveau_fb->nvbo, &nouveau_fb->vma); + nouveau_bo_unpin(nouveau_fb->nvbo); + drm_gem_object_unreference_unlocked(&nouveau_fb->nvbo->gem); + nouveau_fb->nvbo = NULL; + } + drm_fb_helper_fini(&fbcon->helper); + drm_framebuffer_unregister_private(&nouveau_fb->base); + drm_framebuffer_cleanup(&nouveau_fb->base); + return 0; +} + +void nouveau_fbcon_gpu_lockup(struct fb_info *info) +{ + struct nouveau_fbdev *fbcon = info->par; + struct nouveau_drm *drm = nouveau_drm(fbcon->dev); + + NV_ERROR(drm, "GPU lockup - switching to software fbcon\n"); + info->flags |= FBINFO_HWACCEL_DISABLED; +} + +static const struct drm_fb_helper_funcs nouveau_fbcon_helper_funcs = { + .gamma_set = nouveau_fbcon_gamma_set, + .gamma_get = nouveau_fbcon_gamma_get, + .fb_probe = nouveau_fbcon_create, +}; + +void +nouveau_fbcon_set_suspend(struct drm_device *dev, int state) +{ + struct nouveau_drm *drm = nouveau_drm(dev); + if (drm->fbcon) { + console_lock(); + if (state == FBINFO_STATE_RUNNING) + nouveau_fbcon_accel_restore(dev); + fb_set_suspend(drm->fbcon->helper.fbdev, state); + if (state != FBINFO_STATE_RUNNING) + nouveau_fbcon_accel_save_disable(dev); + console_unlock(); + } +} + +int +nouveau_fbcon_init(struct drm_device *dev) +{ + struct nouveau_drm *drm = nouveau_drm(dev); + struct nouveau_fbdev *fbcon; + int preferred_bpp; + int ret; + + if (!dev->mode_config.num_crtc || + (dev->pdev->class >> 8) != PCI_CLASS_DISPLAY_VGA) + return 0; + + fbcon = kzalloc(sizeof(struct nouveau_fbdev), GFP_KERNEL); + if (!fbcon) + return -ENOMEM; + + fbcon->dev = dev; + drm->fbcon = fbcon; + + drm_fb_helper_prepare(dev, &fbcon->helper, &nouveau_fbcon_helper_funcs); + + ret = drm_fb_helper_init(dev, &fbcon->helper, + dev->mode_config.num_crtc, 4); + if (ret) + goto free; + + ret = drm_fb_helper_single_add_all_connectors(&fbcon->helper); + if (ret) + goto fini; + + if (drm->device.info.ram_size <= 32 * 1024 * 1024) + preferred_bpp = 8; + else + if (drm->device.info.ram_size <= 64 * 1024 * 1024) + preferred_bpp = 16; + else + preferred_bpp = 32; + + /* disable all the possible outputs/crtcs before entering KMS mode */ + drm_helper_disable_unused_functions(dev); + + ret = drm_fb_helper_initial_config(&fbcon->helper, preferred_bpp); + if (ret) + goto fini; + + return 0; + +fini: + drm_fb_helper_fini(&fbcon->helper); +free: + kfree(fbcon); + return ret; +} + +void +nouveau_fbcon_fini(struct drm_device *dev) +{ + struct nouveau_drm *drm = nouveau_drm(dev); + + if (!drm->fbcon) + return; + + nouveau_fbcon_accel_fini(dev); + nouveau_fbcon_destroy(dev, drm->fbcon); + kfree(drm->fbcon); + drm->fbcon = NULL; +}