summaryrefslogtreecommitdiff
path: root/drivers/gpu/drm/nouveau/nouveau_fbcon.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/gpu/drm/nouveau/nouveau_fbcon.c')
-rw-r--r--drivers/gpu/drm/nouveau/nouveau_fbcon.c380
1 files changed, 380 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nouveau_fbcon.c b/drivers/gpu/drm/nouveau/nouveau_fbcon.c
new file mode 100644
index 000000000000..36e8c5e4503a
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nouveau_fbcon.c
@@ -0,0 +1,380 @@
+/*
+ * 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/slab.h>
+#include <linux/sysrq.h>
+#include <linux/delay.h>
+#include <linux/fb.h>
+#include <linux/init.h>
+#include <linux/screen_info.h>
+
+#include "drmP.h"
+#include "drm.h"
+#include "drm_crtc.h"
+#include "drm_crtc_helper.h"
+#include "drm_fb_helper.h"
+#include "nouveau_drv.h"
+#include "nouveau_drm.h"
+#include "nouveau_crtc.h"
+#include "nouveau_fb.h"
+#include "nouveau_fbcon.h"
+#include "nouveau_dma.h"
+
+static int
+nouveau_fbcon_sync(struct fb_info *info)
+{
+ struct nouveau_fbcon_par *par = info->par;
+ struct drm_device *dev = par->dev;
+ struct drm_nouveau_private *dev_priv = dev->dev_private;
+ struct nouveau_channel *chan = dev_priv->channel;
+ int ret, i;
+
+ if (!chan->accel_done ||
+ info->state != FBINFO_STATE_RUNNING ||
+ info->flags & FBINFO_HWACCEL_DISABLED)
+ return 0;
+
+ if (RING_SPACE(chan, 4)) {
+ NV_ERROR(dev, "GPU lockup - switching to software fbcon\n");
+ info->flags |= FBINFO_HWACCEL_DISABLED;
+ return 0;
+ }
+
+ BEGIN_RING(chan, 0, 0x0104, 1);
+ OUT_RING(chan, 0);
+ BEGIN_RING(chan, 0, 0x0100, 1);
+ OUT_RING(chan, 0);
+ nouveau_bo_wr32(chan->notifier_bo, chan->m2mf_ntfy + 3, 0xffffffff);
+ FIRE_RING(chan);
+
+ ret = -EBUSY;
+ for (i = 0; i < 100000; i++) {
+ if (!nouveau_bo_rd32(chan->notifier_bo, chan->m2mf_ntfy + 3)) {
+ ret = 0;
+ break;
+ }
+ DRM_UDELAY(1);
+ }
+
+ if (ret) {
+ NV_ERROR(dev, "GPU lockup - switching to software fbcon\n");
+ info->flags |= FBINFO_HWACCEL_DISABLED;
+ 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_setcolreg = drm_fb_helper_setcolreg,
+ .fb_fillrect = cfb_fillrect,
+ .fb_copyarea = cfb_copyarea,
+ .fb_imageblit = cfb_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,
+};
+
+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 struct drm_fb_helper_funcs nouveau_fbcon_helper_funcs = {
+ .gamma_set = nouveau_fbcon_gamma_set,
+ .gamma_get = nouveau_fbcon_gamma_get
+};
+
+#if defined(__i386__) || defined(__x86_64__)
+static bool
+nouveau_fbcon_has_vesafb_or_efifb(struct drm_device *dev)
+{
+ struct pci_dev *pdev = dev->pdev;
+ int ramin;
+
+ if (screen_info.orig_video_isVGA != VIDEO_TYPE_VLFB &&
+ screen_info.orig_video_isVGA != VIDEO_TYPE_EFI)
+ return false;
+
+ if (screen_info.lfb_base < pci_resource_start(pdev, 1))
+ goto not_fb;
+
+ if (screen_info.lfb_base + screen_info.lfb_size >=
+ pci_resource_start(pdev, 1) + pci_resource_len(pdev, 1))
+ goto not_fb;
+
+ return true;
+not_fb:
+ ramin = 2;
+ if (pci_resource_len(pdev, ramin) == 0) {
+ ramin = 3;
+ if (pci_resource_len(pdev, ramin) == 0)
+ return false;
+ }
+
+ if (screen_info.lfb_base < pci_resource_start(pdev, ramin))
+ return false;
+
+ if (screen_info.lfb_base + screen_info.lfb_size >=
+ pci_resource_start(pdev, ramin) + pci_resource_len(pdev, ramin))
+ return false;
+
+ return true;
+}
+#endif
+
+void
+nouveau_fbcon_zfill(struct drm_device *dev)
+{
+ struct drm_nouveau_private *dev_priv = dev->dev_private;
+ struct fb_info *info = dev_priv->fbdev_info;
+ 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_device *dev, uint32_t fb_width,
+ uint32_t fb_height, uint32_t surface_width,
+ uint32_t surface_height, uint32_t surface_depth,
+ uint32_t surface_bpp, struct drm_framebuffer **pfb)
+{
+ struct drm_nouveau_private *dev_priv = dev->dev_private;
+ struct fb_info *info;
+ struct nouveau_fbcon_par *par;
+ struct drm_framebuffer *fb;
+ struct nouveau_framebuffer *nouveau_fb;
+ struct nouveau_bo *nvbo;
+ struct drm_mode_fb_cmd mode_cmd;
+ struct device *device = &dev->pdev->dev;
+ int size, ret;
+
+ mode_cmd.width = surface_width;
+ mode_cmd.height = surface_height;
+
+ mode_cmd.bpp = surface_bpp;
+ mode_cmd.pitch = mode_cmd.width * (mode_cmd.bpp >> 3);
+ mode_cmd.pitch = ALIGN(mode_cmd.pitch, 256);
+ mode_cmd.depth = surface_depth;
+
+ size = mode_cmd.pitch * mode_cmd.height;
+ size = ALIGN(size, PAGE_SIZE);
+
+ ret = nouveau_gem_new(dev, dev_priv->channel, size, 0, TTM_PL_FLAG_VRAM,
+ 0, 0x0000, false, true, &nvbo);
+ if (ret) {
+ NV_ERROR(dev, "failed to allocate framebuffer\n");
+ goto out;
+ }
+
+ ret = nouveau_bo_pin(nvbo, TTM_PL_FLAG_VRAM);
+ if (ret) {
+ NV_ERROR(dev, "failed to pin fb: %d\n", ret);
+ nouveau_bo_ref(NULL, &nvbo);
+ goto out;
+ }
+
+ ret = nouveau_bo_map(nvbo);
+ if (ret) {
+ NV_ERROR(dev, "failed to map fb: %d\n", ret);
+ nouveau_bo_unpin(nvbo);
+ nouveau_bo_ref(NULL, &nvbo);
+ goto out;
+ }
+
+ mutex_lock(&dev->struct_mutex);
+
+ fb = nouveau_framebuffer_create(dev, nvbo, &mode_cmd);
+ if (!fb) {
+ ret = -ENOMEM;
+ NV_ERROR(dev, "failed to allocate fb.\n");
+ goto out_unref;
+ }
+
+ list_add(&fb->filp_head, &dev->mode_config.fb_kernel_list);
+
+ nouveau_fb = nouveau_framebuffer(fb);
+ *pfb = fb;
+
+ info = framebuffer_alloc(sizeof(struct nouveau_fbcon_par), device);
+ if (!info) {
+ ret = -ENOMEM;
+ goto out_unref;
+ }
+
+ par = info->par;
+ par->helper.funcs = &nouveau_fbcon_helper_funcs;
+ par->helper.dev = dev;
+ ret = drm_fb_helper_init_crtc_count(&par->helper, 2, 4);
+ if (ret)
+ goto out_unref;
+ dev_priv->fbdev_info = info;
+
+ strcpy(info->fix.id, "nouveaufb");
+ info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_COPYAREA |
+ FBINFO_HWACCEL_FILLRECT | FBINFO_HWACCEL_IMAGEBLIT;
+ info->fbops = &nouveau_fbcon_ops;
+ info->fix.smem_start = dev->mode_config.fb_base + nvbo->bo.offset -
+ dev_priv->vm_vram_base;
+ 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->pitch, fb->depth);
+ drm_fb_helper_fill_var(info, fb, fb_width, fb_height);
+
+ /* FIXME: we really shouldn't expose mmio space at all */
+ info->fix.mmio_start = pci_resource_start(dev->pdev, 1);
+ info->fix.mmio_len = pci_resource_len(dev->pdev, 1);
+
+ /* Set aperture base/size for vesafb takeover */
+#if defined(__i386__) || defined(__x86_64__)
+ if (nouveau_fbcon_has_vesafb_or_efifb(dev)) {
+ /* Some NVIDIA VBIOS' are stupid and decide to put the
+ * framebuffer in the middle of the PRAMIN BAR for
+ * whatever reason. We need to know the exact lfb_base
+ * to get vesafb kicked off, and the only reliable way
+ * we have left is to find out lfb_base the same way
+ * vesafb did.
+ */
+ info->aperture_base = screen_info.lfb_base;
+ info->aperture_size = screen_info.lfb_size;
+ if (screen_info.orig_video_isVGA == VIDEO_TYPE_VLFB)
+ info->aperture_size *= 65536;
+ } else
+#endif
+ {
+ info->aperture_base = info->fix.mmio_start;
+ info->aperture_size = info->fix.mmio_len;
+ }
+
+ info->pixmap.size = 64*1024;
+ info->pixmap.buf_align = 8;
+ info->pixmap.access_align = 32;
+ info->pixmap.flags = FB_PIXMAP_SYSTEM;
+ info->pixmap.scan_align = 1;
+
+ fb->fbdev = info;
+
+ par->nouveau_fb = nouveau_fb;
+ par->dev = dev;
+
+ switch (dev_priv->card_type) {
+ case NV_50:
+ nv50_fbcon_accel_init(info);
+ break;
+ default:
+ nv04_fbcon_accel_init(info);
+ break;
+ };
+
+ nouveau_fbcon_zfill(dev);
+
+ /* To allow resizeing without swapping buffers */
+ NV_INFO(dev, "allocated %dx%d fb: 0x%lx, bo %p\n",
+ nouveau_fb->base.width,
+ nouveau_fb->base.height,
+ nvbo->bo.offset, nvbo);
+
+ mutex_unlock(&dev->struct_mutex);
+ return 0;
+
+out_unref:
+ mutex_unlock(&dev->struct_mutex);
+out:
+ return ret;
+}
+
+int
+nouveau_fbcon_probe(struct drm_device *dev)
+{
+ NV_DEBUG(dev, "\n");
+
+ return drm_fb_helper_single_fb_probe(dev, 32, nouveau_fbcon_create);
+}
+
+int
+nouveau_fbcon_remove(struct drm_device *dev, struct drm_framebuffer *fb)
+{
+ struct nouveau_framebuffer *nouveau_fb = nouveau_framebuffer(fb);
+ struct fb_info *info;
+
+ if (!fb)
+ return -EINVAL;
+
+ info = fb->fbdev;
+ if (info) {
+ struct nouveau_fbcon_par *par = info->par;
+
+ unregister_framebuffer(info);
+ nouveau_bo_unmap(nouveau_fb->nvbo);
+ mutex_lock(&dev->struct_mutex);
+ drm_gem_object_unreference(nouveau_fb->nvbo->gem);
+ nouveau_fb->nvbo = NULL;
+ mutex_unlock(&dev->struct_mutex);
+ if (par)
+ drm_fb_helper_free(&par->helper);
+ framebuffer_release(info);
+ }
+
+ return 0;
+}