--- /dev/null
+/*
+ * 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 <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/string.h>
+#include <linux/mm.h>
+#include <linux/tty.h>
+#include <linux/sysrq.h>
+#include <linux/delay.h>
+#include <linux/fb.h>
+#include <linux/init.h>
+#include <linux/screen_info.h>
+#include <linux/vga_switcheroo.h>
+#include <linux/console.h>
+
+#include <drm/drmP.h>
+#include <drm/drm_crtc.h>
+#include <drm/drm_crtc_helper.h>
+#include <drm/drm_fb_helper.h>
+
+#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;
+}
Code Review / kvmfornfv.git / blobdiff