diff options
Diffstat (limited to 'drivers/gpu/drm/i915/i915_dma.c')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_dma.c | 258 |
1 files changed, 253 insertions, 5 deletions
diff --git a/drivers/gpu/drm/i915/i915_dma.c b/drivers/gpu/drm/i915/i915_dma.c index 1b81b6a6d81b..b5d0809eecb1 100644 --- a/drivers/gpu/drm/i915/i915_dma.c +++ b/drivers/gpu/drm/i915/i915_dma.c @@ -28,6 +28,8 @@ #include "drmP.h" #include "drm.h" +#include "drm_crtc_helper.h" +#include "intel_drv.h" #include "i915_drm.h" #include "i915_drv.h" @@ -125,6 +127,13 @@ void i915_kernel_lost_context(struct drm_device * dev) struct drm_i915_master_private *master_priv; drm_i915_ring_buffer_t *ring = &(dev_priv->ring); + /* + * We should never lose context on the ring with modesetting + * as we don't expose it to userspace + */ + if (drm_core_check_feature(dev, DRIVER_MODESET)) + return; + ring->head = I915_READ(PRB0_HEAD) & HEAD_ADDR; ring->tail = I915_READ(PRB0_TAIL) & TAIL_ADDR; ring->space = ring->head - (ring->tail + 8); @@ -769,6 +778,11 @@ static int i915_set_status_page(struct drm_device *dev, void *data, return -EINVAL; } + if (drm_core_check_feature(dev, DRIVER_MODESET)) { + WARN(1, "tried to set status page when mode setting active\n"); + return 0; + } + printk(KERN_DEBUG "set status page addr 0x%08x\n", (u32)hws->addr); dev_priv->status_gfx_addr = hws->addr & (0x1ffff<<12); @@ -797,6 +811,173 @@ static int i915_set_status_page(struct drm_device *dev, void *data, return 0; } +/** + * i915_probe_agp - get AGP bootup configuration + * @pdev: PCI device + * @aperture_size: returns AGP aperture configured size + * @preallocated_size: returns size of BIOS preallocated AGP space + * + * Since Intel integrated graphics are UMA, the BIOS has to set aside + * some RAM for the framebuffer at early boot. This code figures out + * how much was set aside so we can use it for our own purposes. + */ +int i915_probe_agp(struct pci_dev *pdev, unsigned long *aperture_size, + unsigned long *preallocated_size) +{ + struct pci_dev *bridge_dev; + u16 tmp = 0; + unsigned long overhead; + + bridge_dev = pci_get_bus_and_slot(0, PCI_DEVFN(0,0)); + if (!bridge_dev) { + DRM_ERROR("bridge device not found\n"); + return -1; + } + + /* Get the fb aperture size and "stolen" memory amount. */ + pci_read_config_word(bridge_dev, INTEL_GMCH_CTRL, &tmp); + pci_dev_put(bridge_dev); + + *aperture_size = 1024 * 1024; + *preallocated_size = 1024 * 1024; + + switch (pdev->device) { + case PCI_DEVICE_ID_INTEL_82830_CGC: + case PCI_DEVICE_ID_INTEL_82845G_IG: + case PCI_DEVICE_ID_INTEL_82855GM_IG: + case PCI_DEVICE_ID_INTEL_82865_IG: + if ((tmp & INTEL_GMCH_MEM_MASK) == INTEL_GMCH_MEM_64M) + *aperture_size *= 64; + else + *aperture_size *= 128; + break; + default: + /* 9xx supports large sizes, just look at the length */ + *aperture_size = pci_resource_len(pdev, 2); + break; + } + + /* + * Some of the preallocated space is taken by the GTT + * and popup. GTT is 1K per MB of aperture size, and popup is 4K. + */ + overhead = (*aperture_size / 1024) + 4096; + switch (tmp & INTEL_855_GMCH_GMS_MASK) { + case INTEL_855_GMCH_GMS_STOLEN_1M: + break; /* 1M already */ + case INTEL_855_GMCH_GMS_STOLEN_4M: + *preallocated_size *= 4; + break; + case INTEL_855_GMCH_GMS_STOLEN_8M: + *preallocated_size *= 8; + break; + case INTEL_855_GMCH_GMS_STOLEN_16M: + *preallocated_size *= 16; + break; + case INTEL_855_GMCH_GMS_STOLEN_32M: + *preallocated_size *= 32; + break; + case INTEL_915G_GMCH_GMS_STOLEN_48M: + *preallocated_size *= 48; + break; + case INTEL_915G_GMCH_GMS_STOLEN_64M: + *preallocated_size *= 64; + break; + case INTEL_855_GMCH_GMS_DISABLED: + DRM_ERROR("video memory is disabled\n"); + return -1; + default: + DRM_ERROR("unexpected GMCH_GMS value: 0x%02x\n", + tmp & INTEL_855_GMCH_GMS_MASK); + return -1; + } + *preallocated_size -= overhead; + + return 0; +} + +static int i915_load_modeset_init(struct drm_device *dev) +{ + struct drm_i915_private *dev_priv = dev->dev_private; + unsigned long agp_size, prealloc_size; + int fb_bar = IS_I9XX(dev) ? 2 : 0; + int ret = 0; + + dev->mode_config.fb_base = drm_get_resource_start(dev, fb_bar) & + 0xff000000; + + DRM_DEBUG("*** fb base 0x%08lx\n", dev->mode_config.fb_base); + + if (IS_MOBILE(dev) || (IS_I9XX(dev) && !IS_I965G(dev) && !IS_G33(dev))) + dev_priv->cursor_needs_physical = true; + else + dev_priv->cursor_needs_physical = false; + + i915_probe_agp(dev->pdev, &agp_size, &prealloc_size); + + /* Basic memrange allocator for stolen space (aka vram) */ + drm_mm_init(&dev_priv->vram, 0, prealloc_size); + + /* Let GEM Manage from end of prealloc space to end of aperture */ + i915_gem_do_init(dev, prealloc_size, agp_size); + + ret = i915_gem_init_ringbuffer(dev); + if (ret) + goto out; + + dev_priv->mm.gtt_mapping = + io_mapping_create_wc(dev->agp->base, + dev->agp->agp_info.aper_size * 1024*1024); + + /* Allow hardware batchbuffers unless told otherwise. + */ + dev_priv->allow_batchbuffer = 1; + + ret = intel_init_bios(dev); + if (ret) + DRM_INFO("failed to find VBIOS tables\n"); + + ret = drm_irq_install(dev); + if (ret) + goto destroy_ringbuffer; + + /* FIXME: re-add hotplug support */ +#if 0 + ret = drm_hotplug_init(dev); + if (ret) + goto destroy_ringbuffer; +#endif + + /* Always safe in the mode setting case. */ + /* FIXME: do pre/post-mode set stuff in core KMS code */ + dev->vblank_disable_allowed = 1; + + /* + * Initialize the hardware status page IRQ location. + */ + + I915_WRITE(INSTPM, (1 << 5) | (1 << 21)); + + intel_modeset_init(dev); + + drm_helper_initial_config(dev, false); + + dev->devname = kstrdup(DRIVER_NAME, GFP_KERNEL); + if (!dev->devname) { + ret = -ENOMEM; + goto modeset_cleanup; + } + + return 0; + +modeset_cleanup: + intel_modeset_cleanup(dev); +destroy_ringbuffer: + i915_gem_cleanup_ringbuffer(dev); +out: + return ret; +} + int i915_master_create(struct drm_device *dev, struct drm_master *master) { struct drm_i915_master_private *master_priv; @@ -821,6 +1002,25 @@ void i915_master_destroy(struct drm_device *dev, struct drm_master *master) master->driver_priv = NULL; } + +int i915_driver_firstopen(struct drm_device *dev) +{ + if (drm_core_check_feature(dev, DRIVER_MODESET)) + return 0; + return 0; +} + +/** + * i915_driver_load - setup chip and create an initial config + * @dev: DRM device + * @flags: startup flags + * + * The driver load routine has to do several things: + * - drive output discovery via intel_modeset_init() + * - initialize the memory manager + * - allocate initial config memory + * - setup the DRM framebuffer with the allocated memory + */ int i915_driver_load(struct drm_device *dev, unsigned long flags) { struct drm_i915_private *dev_priv = dev->dev_private; @@ -848,6 +1048,11 @@ int i915_driver_load(struct drm_device *dev, unsigned long flags) size = drm_get_resource_len(dev, mmio_bar); dev_priv->regs = ioremap(base, size); + if (!dev_priv->regs) { + DRM_ERROR("failed to map registers\n"); + ret = -EIO; + goto free_priv; + } #ifdef CONFIG_HIGHMEM64G /* don't enable GEM on PAE - needs agp + set_memory_* interface fixes */ @@ -863,7 +1068,7 @@ int i915_driver_load(struct drm_device *dev, unsigned long flags) if (!I915_NEED_GFX_HWS(dev)) { ret = i915_init_phys_hws(dev); if (ret != 0) - return ret; + goto out_rmmap; } /* On the 945G/GM, the chipset reports the MSI capability on the @@ -883,6 +1088,7 @@ int i915_driver_load(struct drm_device *dev, unsigned long flags) intel_opregion_init(dev); spin_lock_init(&dev_priv->user_irq_lock); + dev_priv->user_irq_refcount = 0; ret = drm_vblank_init(dev, I915_NUM_PIPE); @@ -891,6 +1097,20 @@ int i915_driver_load(struct drm_device *dev, unsigned long flags) return ret; } + if (drm_core_check_feature(dev, DRIVER_MODESET)) { + ret = i915_load_modeset_init(dev); + if (ret < 0) { + DRM_ERROR("failed to init modeset\n"); + goto out_rmmap; + } + } + + return 0; + +out_rmmap: + iounmap(dev_priv->regs); +free_priv: + drm_free(dev_priv, sizeof(struct drm_i915_private), DRM_MEM_DRIVER); return ret; } @@ -898,16 +1118,29 @@ int i915_driver_unload(struct drm_device *dev) { struct drm_i915_private *dev_priv = dev->dev_private; + if (drm_core_check_feature(dev, DRIVER_MODESET)) { + io_mapping_free(dev_priv->mm.gtt_mapping); + drm_irq_uninstall(dev); + } + if (dev->pdev->msi_enabled) pci_disable_msi(dev->pdev); - i915_free_hws(dev); - if (dev_priv->regs != NULL) iounmap(dev_priv->regs); intel_opregion_free(dev); + if (drm_core_check_feature(dev, DRIVER_MODESET)) { + intel_modeset_cleanup(dev); + + mutex_lock(&dev->struct_mutex); + i915_gem_cleanup_ringbuffer(dev); + mutex_unlock(&dev->struct_mutex); + drm_mm_takedown(&dev_priv->vram); + i915_gem_lastclose(dev); + } + drm_free(dev->dev_private, sizeof(drm_i915_private_t), DRM_MEM_DRIVER); @@ -933,12 +1166,26 @@ int i915_driver_open(struct drm_device *dev, struct drm_file *file_priv) return 0; } +/** + * i915_driver_lastclose - clean up after all DRM clients have exited + * @dev: DRM device + * + * Take care of cleaning up after all DRM clients have exited. In the + * mode setting case, we want to restore the kernel's initial mode (just + * in case the last client left us in a bad state). + * + * Additionally, in the non-mode setting case, we'll tear down the AGP + * and DMA structures, since the kernel won't be using them, and clea + * up any GEM state. + */ void i915_driver_lastclose(struct drm_device * dev) { drm_i915_private_t *dev_priv = dev->dev_private; - if (!dev_priv) + if (!dev_priv || drm_core_check_feature(dev, DRIVER_MODESET)) { + intelfb_restore(); return; + } i915_gem_lastclose(dev); @@ -951,7 +1198,8 @@ void i915_driver_lastclose(struct drm_device * dev) void i915_driver_preclose(struct drm_device * dev, struct drm_file *file_priv) { drm_i915_private_t *dev_priv = dev->dev_private; - i915_mem_release(dev, file_priv, dev_priv->agp_heap); + if (!drm_core_check_feature(dev, DRIVER_MODESET)) + i915_mem_release(dev, file_priv, dev_priv->agp_heap); } void i915_driver_postclose(struct drm_device *dev, struct drm_file *file_priv) |