drm/nv50: fix iommu errors caused by device reading from address 0
[safe/jmp/linux-2.6] / drivers / gpu / drm / nouveau / nouveau_state.c
index e67f2ba..b02a231 100644 (file)
@@ -34,9 +34,9 @@
 
 #include "nouveau_drv.h"
 #include "nouveau_drm.h"
+#include "nouveau_fbcon.h"
 #include "nv50_display.h"
 
-static int nouveau_stub_init(struct drm_device *dev) { return 0; }
 static void nouveau_stub_takedown(struct drm_device *dev) {}
 
 static int nouveau_init_engine_ptrs(struct drm_device *dev)
@@ -278,8 +278,8 @@ static int nouveau_init_engine_ptrs(struct drm_device *dev)
                engine->timer.init              = nv04_timer_init;
                engine->timer.read              = nv04_timer_read;
                engine->timer.takedown          = nv04_timer_takedown;
-               engine->fb.init                 = nouveau_stub_init;
-               engine->fb.takedown             = nouveau_stub_takedown;
+               engine->fb.init                 = nv50_fb_init;
+               engine->fb.takedown             = nv50_fb_takedown;
                engine->graph.grclass           = nv50_graph_grclass;
                engine->graph.init              = nv50_graph_init;
                engine->graph.takedown          = nv50_graph_takedown;
@@ -342,7 +342,7 @@ nouveau_card_init_channel(struct drm_device *dev)
 
        gpuobj = NULL;
        ret = nouveau_gpuobj_dma_new(dev_priv->channel, NV_CLASS_DMA_IN_MEMORY,
-                                    0, nouveau_mem_fb_amount(dev),
+                                    0, dev_priv->vram_size,
                                     NV_DMA_ACCESS_RW, NV_DMA_TARGET_VIDMEM,
                                     &gpuobj);
        if (ret)
@@ -376,12 +376,15 @@ out_err:
 static void nouveau_switcheroo_set_state(struct pci_dev *pdev,
                                         enum vga_switcheroo_state state)
 {
+       struct drm_device *dev = pci_get_drvdata(pdev);
        pm_message_t pmm = { .event = PM_EVENT_SUSPEND };
        if (state == VGA_SWITCHEROO_ON) {
                printk(KERN_ERR "VGA switcheroo: switched nouveau on\n");
                nouveau_pci_resume(pdev);
+               drm_kms_helper_poll_enable(dev);
        } else {
                printk(KERN_ERR "VGA switcheroo: switched nouveau off\n");
+               drm_kms_helper_poll_disable(dev);
                nouveau_pci_suspend(pdev, pmm);
        }
 }
@@ -428,6 +431,10 @@ nouveau_card_init(struct drm_device *dev)
                        goto out;
        }
 
+       ret = nouveau_mem_detect(dev);
+       if (ret)
+               goto out_bios;
+
        ret = nouveau_gpuobj_early_init(dev);
        if (ret)
                goto out_bios;
@@ -503,7 +510,7 @@ nouveau_card_init(struct drm_device *dev)
                else
                        ret = nv04_display_create(dev);
                if (ret)
-                       goto out_irq;
+                       goto out_channel;
        }
 
        ret = nouveau_backlight_init(dev);
@@ -512,11 +519,18 @@ nouveau_card_init(struct drm_device *dev)
 
        dev_priv->init_state = NOUVEAU_CARD_INIT_DONE;
 
-       if (drm_core_check_feature(dev, DRIVER_MODESET))
-               drm_helper_initial_config(dev);
+       if (drm_core_check_feature(dev, DRIVER_MODESET)) {
+               nouveau_fbcon_init(dev);
+               drm_kms_helper_poll_init(dev);
+       }
 
        return 0;
 
+out_channel:
+       if (dev_priv->channel) {
+               nouveau_channel_free(dev_priv->channel);
+               dev_priv->channel = NULL;
+       }
 out_irq:
        drm_irq_uninstall(dev);
 out_fifo:
@@ -534,6 +548,7 @@ out_mc:
 out_gpuobj:
        nouveau_gpuobj_takedown(dev);
 out_mem:
+       nouveau_sgdma_takedown(dev);
        nouveau_mem_close(dev);
 out_instmem:
        engine->instmem.takedown(dev);
@@ -554,6 +569,7 @@ static void nouveau_card_takedown(struct drm_device *dev)
        NV_DEBUG(dev, "prev state = %d\n", dev_priv->init_state);
 
        if (dev_priv->init_state != NOUVEAU_CARD_INIT_DOWN) {
+
                nouveau_backlight_exit(dev);
 
                if (dev_priv->channel) {
@@ -628,6 +644,48 @@ static void nouveau_OF_copy_vbios_to_ramin(struct drm_device *dev)
 #endif
 }
 
+static struct apertures_struct *nouveau_get_apertures(struct drm_device *dev)
+{
+       struct pci_dev *pdev = dev->pdev;
+       struct apertures_struct *aper = alloc_apertures(3);
+       if (!aper)
+               return NULL;
+
+       aper->ranges[0].base = pci_resource_start(pdev, 1);
+       aper->ranges[0].size = pci_resource_len(pdev, 1);
+       aper->count = 1;
+
+       if (pci_resource_len(pdev, 2)) {
+               aper->ranges[aper->count].base = pci_resource_start(pdev, 2);
+               aper->ranges[aper->count].size = pci_resource_len(pdev, 2);
+               aper->count++;
+       }
+
+       if (pci_resource_len(pdev, 3)) {
+               aper->ranges[aper->count].base = pci_resource_start(pdev, 3);
+               aper->ranges[aper->count].size = pci_resource_len(pdev, 3);
+               aper->count++;
+       }
+
+       return aper;
+}
+
+static int nouveau_remove_conflicting_drivers(struct drm_device *dev)
+{
+       struct drm_nouveau_private *dev_priv = dev->dev_private;
+       bool primary = false;
+       dev_priv->apertures = nouveau_get_apertures(dev);
+       if (!dev_priv->apertures)
+               return -ENOMEM;
+
+#ifdef CONFIG_X86
+       primary = dev->pdev->resource[PCI_ROM_RESOURCE].flags & IORESOURCE_ROM_SHADOW;
+#endif
+       
+       remove_conflicting_framebuffers(dev_priv->apertures, "nouveaufb", primary);
+       return 0;
+}
+
 int nouveau_load(struct drm_device *dev, unsigned long flags)
 {
        struct drm_nouveau_private *dev_priv;
@@ -715,29 +773,30 @@ int nouveau_load(struct drm_device *dev, unsigned long flags)
        NV_INFO(dev, "Detected an NV%2x generation card (0x%08x)\n",
                dev_priv->card_type, reg0);
 
-       /* map larger RAMIN aperture on NV40 cards */
-       dev_priv->ramin  = NULL;
+       if (drm_core_check_feature(dev, DRIVER_MODESET)) {
+               int ret = nouveau_remove_conflicting_drivers(dev);
+               if (ret)
+                       return ret;
+       }
+
+       /* Map PRAMIN BAR, or on older cards, the aperture withing BAR0 */
        if (dev_priv->card_type >= NV_40) {
                int ramin_bar = 2;
                if (pci_resource_len(dev->pdev, ramin_bar) == 0)
                        ramin_bar = 3;
 
                dev_priv->ramin_size = pci_resource_len(dev->pdev, ramin_bar);
-               dev_priv->ramin = ioremap(
-                               pci_resource_start(dev->pdev, ramin_bar),
+               dev_priv->ramin =
+                       ioremap(pci_resource_start(dev->pdev, ramin_bar),
                                dev_priv->ramin_size);
                if (!dev_priv->ramin) {
-                       NV_ERROR(dev, "Failed to init RAMIN mapping, "
-                                     "limited instance memory available\n");
+                       NV_ERROR(dev, "Failed to PRAMIN BAR");
+                       return -ENOMEM;
                }
-       }
-
-       /* On older cards (or if the above failed), create a map covering
-        * the BAR0 PRAMIN aperture */
-       if (!dev_priv->ramin) {
+       } else {
                dev_priv->ramin_size = 1 * 1024 * 1024;
                dev_priv->ramin = ioremap(mmio_start_offs + NV_RAMIN,
-                                                       dev_priv->ramin_size);
+                                         dev_priv->ramin_size);
                if (!dev_priv->ramin) {
                        NV_ERROR(dev, "Failed to map BAR0 PRAMIN.\n");
                        return -ENOMEM;
@@ -785,6 +844,8 @@ int nouveau_unload(struct drm_device *dev)
        struct drm_nouveau_private *dev_priv = dev->dev_private;
 
        if (drm_core_check_feature(dev, DRIVER_MODESET)) {
+               drm_kms_helper_poll_fini(dev);
+               nouveau_fbcon_fini(dev);
                if (dev_priv->card_type >= NV_50)
                        nv50_display_destroy(dev);
                else
@@ -850,6 +911,9 @@ int nouveau_ioctl_getparam(struct drm_device *dev, void *data,
        case NOUVEAU_GETPARAM_VM_VRAM_BASE:
                getparam->value = dev_priv->vm_vram_base;
                break;
+       case NOUVEAU_GETPARAM_PTIMER_TIME:
+               getparam->value = dev_priv->engine.timer.read(dev);
+               break;
        case NOUVEAU_GETPARAM_GRAPH_UNITS:
                /* NV40 and NV50 versions are quite different, but register
                 * address is the same. User is supposed to know the card