diff options
Diffstat (limited to 'drivers/gpu/drm/i915/i915_dma.c')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_dma.c | 326 |
1 files changed, 276 insertions, 50 deletions
diff --git a/drivers/gpu/drm/i915/i915_dma.c b/drivers/gpu/drm/i915/i915_dma.c index 2307f98349f..8bfc0bbf13e 100644 --- a/drivers/gpu/drm/i915/i915_dma.c +++ b/drivers/gpu/drm/i915/i915_dma.c @@ -35,6 +35,9 @@ #include "i915_drv.h" #include "i915_trace.h" #include <linux/vgaarb.h> +#include <linux/acpi.h> +#include <linux/pnp.h> +#include <linux/vga_switcheroo.h> /* Really want an OS-independent resettable timer. Would like to have * this loop run for (eg) 3 sec, but have the timer reset every time @@ -933,6 +936,120 @@ static int i915_get_bridge_dev(struct drm_device *dev) return 0; } +#define MCHBAR_I915 0x44 +#define MCHBAR_I965 0x48 +#define MCHBAR_SIZE (4*4096) + +#define DEVEN_REG 0x54 +#define DEVEN_MCHBAR_EN (1 << 28) + +/* Allocate space for the MCH regs if needed, return nonzero on error */ +static int +intel_alloc_mchbar_resource(struct drm_device *dev) +{ + drm_i915_private_t *dev_priv = dev->dev_private; + int reg = IS_I965G(dev) ? MCHBAR_I965 : MCHBAR_I915; + u32 temp_lo, temp_hi = 0; + u64 mchbar_addr; + int ret = 0; + + if (IS_I965G(dev)) + pci_read_config_dword(dev_priv->bridge_dev, reg + 4, &temp_hi); + pci_read_config_dword(dev_priv->bridge_dev, reg, &temp_lo); + mchbar_addr = ((u64)temp_hi << 32) | temp_lo; + + /* If ACPI doesn't have it, assume we need to allocate it ourselves */ +#ifdef CONFIG_PNP + if (mchbar_addr && + pnp_range_reserved(mchbar_addr, mchbar_addr + MCHBAR_SIZE)) { + ret = 0; + goto out; + } +#endif + + /* Get some space for it */ + ret = pci_bus_alloc_resource(dev_priv->bridge_dev->bus, &dev_priv->mch_res, + MCHBAR_SIZE, MCHBAR_SIZE, + PCIBIOS_MIN_MEM, + 0, pcibios_align_resource, + dev_priv->bridge_dev); + if (ret) { + DRM_DEBUG_DRIVER("failed bus alloc: %d\n", ret); + dev_priv->mch_res.start = 0; + goto out; + } + + if (IS_I965G(dev)) + pci_write_config_dword(dev_priv->bridge_dev, reg + 4, + upper_32_bits(dev_priv->mch_res.start)); + + pci_write_config_dword(dev_priv->bridge_dev, reg, + lower_32_bits(dev_priv->mch_res.start)); +out: + return ret; +} + +/* Setup MCHBAR if possible, return true if we should disable it again */ +static void +intel_setup_mchbar(struct drm_device *dev) +{ + drm_i915_private_t *dev_priv = dev->dev_private; + int mchbar_reg = IS_I965G(dev) ? MCHBAR_I965 : MCHBAR_I915; + u32 temp; + bool enabled; + + dev_priv->mchbar_need_disable = false; + + if (IS_I915G(dev) || IS_I915GM(dev)) { + pci_read_config_dword(dev_priv->bridge_dev, DEVEN_REG, &temp); + enabled = !!(temp & DEVEN_MCHBAR_EN); + } else { + pci_read_config_dword(dev_priv->bridge_dev, mchbar_reg, &temp); + enabled = temp & 1; + } + + /* If it's already enabled, don't have to do anything */ + if (enabled) + return; + + if (intel_alloc_mchbar_resource(dev)) + return; + + dev_priv->mchbar_need_disable = true; + + /* Space is allocated or reserved, so enable it. */ + if (IS_I915G(dev) || IS_I915GM(dev)) { + pci_write_config_dword(dev_priv->bridge_dev, DEVEN_REG, + temp | DEVEN_MCHBAR_EN); + } else { + pci_read_config_dword(dev_priv->bridge_dev, mchbar_reg, &temp); + pci_write_config_dword(dev_priv->bridge_dev, mchbar_reg, temp | 1); + } +} + +static void +intel_teardown_mchbar(struct drm_device *dev) +{ + drm_i915_private_t *dev_priv = dev->dev_private; + int mchbar_reg = IS_I965G(dev) ? MCHBAR_I965 : MCHBAR_I915; + u32 temp; + + if (dev_priv->mchbar_need_disable) { + if (IS_I915G(dev) || IS_I915GM(dev)) { + pci_read_config_dword(dev_priv->bridge_dev, DEVEN_REG, &temp); + temp &= ~DEVEN_MCHBAR_EN; + pci_write_config_dword(dev_priv->bridge_dev, DEVEN_REG, temp); + } else { + pci_read_config_dword(dev_priv->bridge_dev, mchbar_reg, &temp); + temp &= ~1; + pci_write_config_dword(dev_priv->bridge_dev, mchbar_reg, temp); + } + } + + if (dev_priv->mch_res.start) + release_resource(&dev_priv->mch_res); +} + /** * i915_probe_agp - get AGP bootup configuration * @pdev: PCI device @@ -978,59 +1095,123 @@ static int i915_probe_agp(struct drm_device *dev, uint32_t *aperture_size, * Some of the preallocated space is taken by the GTT * and popup. GTT is 1K per MB of aperture size, and popup is 4K. */ - if (IS_G4X(dev) || IS_PINEVIEW(dev) || IS_IRONLAKE(dev)) + if (IS_G4X(dev) || IS_PINEVIEW(dev) || IS_IRONLAKE(dev) || IS_GEN6(dev)) overhead = 4096; else overhead = (*aperture_size / 1024) + 4096; - switch (tmp & INTEL_GMCH_GMS_MASK) { - case INTEL_855_GMCH_GMS_DISABLED: - DRM_ERROR("video memory is disabled\n"); - return -1; - case INTEL_855_GMCH_GMS_STOLEN_1M: - stolen = 1 * 1024 * 1024; - break; - case INTEL_855_GMCH_GMS_STOLEN_4M: - stolen = 4 * 1024 * 1024; - break; - case INTEL_855_GMCH_GMS_STOLEN_8M: - stolen = 8 * 1024 * 1024; - break; - case INTEL_855_GMCH_GMS_STOLEN_16M: - stolen = 16 * 1024 * 1024; - break; - case INTEL_855_GMCH_GMS_STOLEN_32M: - stolen = 32 * 1024 * 1024; - break; - case INTEL_915G_GMCH_GMS_STOLEN_48M: - stolen = 48 * 1024 * 1024; - break; - case INTEL_915G_GMCH_GMS_STOLEN_64M: - stolen = 64 * 1024 * 1024; - break; - case INTEL_GMCH_GMS_STOLEN_128M: - stolen = 128 * 1024 * 1024; - break; - case INTEL_GMCH_GMS_STOLEN_256M: - stolen = 256 * 1024 * 1024; - break; - case INTEL_GMCH_GMS_STOLEN_96M: - stolen = 96 * 1024 * 1024; - break; - case INTEL_GMCH_GMS_STOLEN_160M: - stolen = 160 * 1024 * 1024; - break; - case INTEL_GMCH_GMS_STOLEN_224M: - stolen = 224 * 1024 * 1024; - break; - case INTEL_GMCH_GMS_STOLEN_352M: - stolen = 352 * 1024 * 1024; - break; - default: - DRM_ERROR("unexpected GMCH_GMS value: 0x%02x\n", - tmp & INTEL_GMCH_GMS_MASK); - return -1; + if (IS_GEN6(dev)) { + /* SNB has memory control reg at 0x50.w */ + pci_read_config_word(dev->pdev, SNB_GMCH_CTRL, &tmp); + + switch (tmp & SNB_GMCH_GMS_STOLEN_MASK) { + case INTEL_855_GMCH_GMS_DISABLED: + DRM_ERROR("video memory is disabled\n"); + return -1; + case SNB_GMCH_GMS_STOLEN_32M: + stolen = 32 * 1024 * 1024; + break; + case SNB_GMCH_GMS_STOLEN_64M: + stolen = 64 * 1024 * 1024; + break; + case SNB_GMCH_GMS_STOLEN_96M: + stolen = 96 * 1024 * 1024; + break; + case SNB_GMCH_GMS_STOLEN_128M: + stolen = 128 * 1024 * 1024; + break; + case SNB_GMCH_GMS_STOLEN_160M: + stolen = 160 * 1024 * 1024; + break; + case SNB_GMCH_GMS_STOLEN_192M: + stolen = 192 * 1024 * 1024; + break; + case SNB_GMCH_GMS_STOLEN_224M: + stolen = 224 * 1024 * 1024; + break; + case SNB_GMCH_GMS_STOLEN_256M: + stolen = 256 * 1024 * 1024; + break; + case SNB_GMCH_GMS_STOLEN_288M: + stolen = 288 * 1024 * 1024; + break; + case SNB_GMCH_GMS_STOLEN_320M: + stolen = 320 * 1024 * 1024; + break; + case SNB_GMCH_GMS_STOLEN_352M: + stolen = 352 * 1024 * 1024; + break; + case SNB_GMCH_GMS_STOLEN_384M: + stolen = 384 * 1024 * 1024; + break; + case SNB_GMCH_GMS_STOLEN_416M: + stolen = 416 * 1024 * 1024; + break; + case SNB_GMCH_GMS_STOLEN_448M: + stolen = 448 * 1024 * 1024; + break; + case SNB_GMCH_GMS_STOLEN_480M: + stolen = 480 * 1024 * 1024; + break; + case SNB_GMCH_GMS_STOLEN_512M: + stolen = 512 * 1024 * 1024; + break; + default: + DRM_ERROR("unexpected GMCH_GMS value: 0x%02x\n", + tmp & SNB_GMCH_GMS_STOLEN_MASK); + return -1; + } + } else { + switch (tmp & INTEL_GMCH_GMS_MASK) { + case INTEL_855_GMCH_GMS_DISABLED: + DRM_ERROR("video memory is disabled\n"); + return -1; + case INTEL_855_GMCH_GMS_STOLEN_1M: + stolen = 1 * 1024 * 1024; + break; + case INTEL_855_GMCH_GMS_STOLEN_4M: + stolen = 4 * 1024 * 1024; + break; + case INTEL_855_GMCH_GMS_STOLEN_8M: + stolen = 8 * 1024 * 1024; + break; + case INTEL_855_GMCH_GMS_STOLEN_16M: + stolen = 16 * 1024 * 1024; + break; + case INTEL_855_GMCH_GMS_STOLEN_32M: + stolen = 32 * 1024 * 1024; + break; + case INTEL_915G_GMCH_GMS_STOLEN_48M: + stolen = 48 * 1024 * 1024; + break; + case INTEL_915G_GMCH_GMS_STOLEN_64M: + stolen = 64 * 1024 * 1024; + break; + case INTEL_GMCH_GMS_STOLEN_128M: + stolen = 128 * 1024 * 1024; + break; + case INTEL_GMCH_GMS_STOLEN_256M: + stolen = 256 * 1024 * 1024; + break; + case INTEL_GMCH_GMS_STOLEN_96M: + stolen = 96 * 1024 * 1024; + break; + case INTEL_GMCH_GMS_STOLEN_160M: + stolen = 160 * 1024 * 1024; + break; + case INTEL_GMCH_GMS_STOLEN_224M: + stolen = 224 * 1024 * 1024; + break; + case INTEL_GMCH_GMS_STOLEN_352M: + stolen = 352 * 1024 * 1024; + break; + default: + DRM_ERROR("unexpected GMCH_GMS value: 0x%02x\n", + tmp & INTEL_GMCH_GMS_MASK); + return -1; + } } + *preallocated_size = stolen - overhead; *start = overhead; @@ -1064,7 +1245,7 @@ static unsigned long i915_gtt_to_phys(struct drm_device *dev, int gtt_offset, gtt_size; if (IS_I965G(dev)) { - if (IS_G4X(dev) || IS_IRONLAKE(dev)) { + if (IS_G4X(dev) || IS_IRONLAKE(dev) || IS_GEN6(dev)) { gtt_offset = 2*1024*1024; gtt_size = 2*1024*1024; } else { @@ -1133,6 +1314,7 @@ static void i915_setup_compression(struct drm_device *dev, int size) /* Leave 1M for line length buffer & misc. */ compressed_fb = drm_mm_search_free(&dev_priv->vram, size, 4096, 0); if (!compressed_fb) { + dev_priv->no_fbc_reason = FBC_STOLEN_TOO_SMALL; i915_warn_stolen(dev); return; } @@ -1140,6 +1322,7 @@ static void i915_setup_compression(struct drm_device *dev, int size) compressed_fb = drm_mm_get_block(compressed_fb, size, 4096); if (!compressed_fb) { i915_warn_stolen(dev); + dev_priv->no_fbc_reason = FBC_STOLEN_TOO_SMALL; return; } @@ -1199,6 +1382,32 @@ static unsigned int i915_vga_set_decode(void *cookie, bool state) return VGA_RSRC_NORMAL_IO | VGA_RSRC_NORMAL_MEM; } +static void i915_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_INFO "i915: switched off\n"); + /* i915 resume handler doesn't set to D0 */ + pci_set_power_state(dev->pdev, PCI_D0); + i915_resume(dev); + } else { + printk(KERN_ERR "i915: switched off\n"); + i915_suspend(dev, pmm); + } +} + +static bool i915_switcheroo_can_switch(struct pci_dev *pdev) +{ + struct drm_device *dev = pci_get_drvdata(pdev); + bool can_switch; + + spin_lock(&dev->count_lock); + can_switch = (dev->open_count == 0); + spin_unlock(&dev->count_lock); + return can_switch; +} + static int i915_load_modeset_init(struct drm_device *dev, unsigned long prealloc_start, unsigned long prealloc_size, @@ -1260,6 +1469,12 @@ static int i915_load_modeset_init(struct drm_device *dev, if (ret) goto destroy_ringbuffer; + ret = vga_switcheroo_register_client(dev->pdev, + i915_switcheroo_set_state, + i915_switcheroo_can_switch); + if (ret) + goto destroy_ringbuffer; + intel_modeset_init(dev); ret = drm_irq_install(dev); @@ -1281,7 +1496,9 @@ static int i915_load_modeset_init(struct drm_device *dev, return 0; destroy_ringbuffer: + mutex_lock(&dev->struct_mutex); i915_gem_cleanup_ringbuffer(dev); + mutex_unlock(&dev->struct_mutex); out: return ret; } @@ -1445,11 +1662,14 @@ int i915_driver_load(struct drm_device *dev, unsigned long flags) dev->driver->get_vblank_counter = i915_get_vblank_counter; dev->max_vblank_count = 0xffffff; /* only 24 bits of frame count */ - if (IS_G4X(dev) || IS_IRONLAKE(dev)) { + if (IS_G4X(dev) || IS_IRONLAKE(dev) || IS_GEN6(dev)) { dev->max_vblank_count = 0xffffffff; /* full 32 bit counter */ dev->driver->get_vblank_counter = gm45_get_vblank_counter; } + /* Try to make sure MCHBAR is enabled before poking at it */ + intel_setup_mchbar(dev); + i915_gem_load(dev); /* Init HWS */ @@ -1523,6 +1743,8 @@ int i915_driver_unload(struct drm_device *dev) { struct drm_i915_private *dev_priv = dev->dev_private; + i915_destroy_error_state(dev); + destroy_workqueue(dev_priv->wq); del_timer_sync(&dev_priv->hangcheck_timer); @@ -1544,6 +1766,7 @@ int i915_driver_unload(struct drm_device *dev) dev_priv->child_dev_num = 0; } drm_irq_uninstall(dev); + vga_switcheroo_unregister_client(dev->pdev); vga_client_register(dev->pdev, NULL, NULL, NULL); } @@ -1569,6 +1792,8 @@ int i915_driver_unload(struct drm_device *dev) intel_cleanup_overlay(dev); } + intel_teardown_mchbar(dev); + pci_dev_put(dev_priv->bridge_dev); kfree(dev->dev_private); @@ -1611,6 +1836,7 @@ void i915_driver_lastclose(struct drm_device * dev) if (!dev_priv || drm_core_check_feature(dev, DRIVER_MODESET)) { drm_fb_helper_restore(); + vga_switcheroo_process_delayed_switch(); return; } |