| /* i915_dma.c -- DMA support for the I915 -*- linux-c -*- |
| */ |
| /* |
| * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas. |
| * All Rights Reserved. |
| * |
| * 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, sub license, 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 NON-INFRINGEMENT. |
| * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS 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. |
| * |
| */ |
| |
| #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
| |
| #include <drm/drmP.h> |
| #include <drm/drm_crtc_helper.h> |
| #include <drm/drm_fb_helper.h> |
| #include <drm/drm_legacy.h> |
| #include "intel_drv.h" |
| #include <drm/i915_drm.h> |
| #include "i915_drv.h" |
| #include "i915_vgpu.h" |
| #include "i915_trace.h" |
| #include <linux/pci.h> |
| #include <linux/console.h> |
| #include <linux/vt.h> |
| #include <linux/vgaarb.h> |
| #include <linux/acpi.h> |
| #include <linux/pnp.h> |
| #include <linux/vga_switcheroo.h> |
| #include <linux/slab.h> |
| #include <acpi/video.h> |
| #include <linux/pm.h> |
| #include <linux/pm_runtime.h> |
| #include <linux/oom.h> |
| |
| static unsigned int i915_load_fail_count; |
| |
| bool __i915_inject_load_failure(const char *func, int line) |
| { |
| if (i915_load_fail_count >= i915.inject_load_failure) |
| return false; |
| |
| if (++i915_load_fail_count == i915.inject_load_failure) { |
| DRM_INFO("Injecting failure at checkpoint %u [%s:%d]\n", |
| i915.inject_load_failure, func, line); |
| return true; |
| } |
| |
| return false; |
| } |
| |
| #define FDO_BUG_URL "https://bugs.freedesktop.org/enter_bug.cgi?product=DRI" |
| #define FDO_BUG_MSG "Please file a bug at " FDO_BUG_URL " against DRM/Intel " \ |
| "providing the dmesg log by booting with drm.debug=0xf" |
| |
| void |
| __i915_printk(struct drm_i915_private *dev_priv, const char *level, |
| const char *fmt, ...) |
| { |
| static bool shown_bug_once; |
| struct device *dev = dev_priv->dev->dev; |
| bool is_error = level[1] <= KERN_ERR[1]; |
| bool is_debug = level[1] == KERN_DEBUG[1]; |
| struct va_format vaf; |
| va_list args; |
| |
| if (is_debug && !(drm_debug & DRM_UT_DRIVER)) |
| return; |
| |
| va_start(args, fmt); |
| |
| vaf.fmt = fmt; |
| vaf.va = &args; |
| |
| dev_printk(level, dev, "[" DRM_NAME ":%ps] %pV", |
| __builtin_return_address(0), &vaf); |
| |
| if (is_error && !shown_bug_once) { |
| dev_notice(dev, "%s", FDO_BUG_MSG); |
| shown_bug_once = true; |
| } |
| |
| va_end(args); |
| } |
| |
| static bool i915_error_injected(struct drm_i915_private *dev_priv) |
| { |
| return i915.inject_load_failure && |
| i915_load_fail_count == i915.inject_load_failure; |
| } |
| |
| #define i915_load_error(dev_priv, fmt, ...) \ |
| __i915_printk(dev_priv, \ |
| i915_error_injected(dev_priv) ? KERN_DEBUG : KERN_ERR, \ |
| fmt, ##__VA_ARGS__) |
| |
| static int i915_getparam(struct drm_device *dev, void *data, |
| struct drm_file *file_priv) |
| { |
| struct drm_i915_private *dev_priv = dev->dev_private; |
| drm_i915_getparam_t *param = data; |
| int value; |
| |
| switch (param->param) { |
| case I915_PARAM_IRQ_ACTIVE: |
| case I915_PARAM_ALLOW_BATCHBUFFER: |
| case I915_PARAM_LAST_DISPATCH: |
| /* Reject all old ums/dri params. */ |
| return -ENODEV; |
| case I915_PARAM_CHIPSET_ID: |
| value = dev->pdev->device; |
| break; |
| case I915_PARAM_REVISION: |
| value = dev->pdev->revision; |
| break; |
| case I915_PARAM_HAS_GEM: |
| value = 1; |
| break; |
| case I915_PARAM_NUM_FENCES_AVAIL: |
| value = dev_priv->num_fence_regs; |
| break; |
| case I915_PARAM_HAS_OVERLAY: |
| value = dev_priv->overlay ? 1 : 0; |
| break; |
| case I915_PARAM_HAS_PAGEFLIPPING: |
| value = 1; |
| break; |
| case I915_PARAM_HAS_EXECBUF2: |
| /* depends on GEM */ |
| value = 1; |
| break; |
| case I915_PARAM_HAS_BSD: |
| value = intel_engine_initialized(&dev_priv->engine[VCS]); |
| break; |
| case I915_PARAM_HAS_BLT: |
| value = intel_engine_initialized(&dev_priv->engine[BCS]); |
| break; |
| case I915_PARAM_HAS_VEBOX: |
| value = intel_engine_initialized(&dev_priv->engine[VECS]); |
| break; |
| case I915_PARAM_HAS_BSD2: |
| value = intel_engine_initialized(&dev_priv->engine[VCS2]); |
| break; |
| case I915_PARAM_HAS_RELAXED_FENCING: |
| value = 1; |
| break; |
| case I915_PARAM_HAS_COHERENT_RINGS: |
| value = 1; |
| break; |
| case I915_PARAM_HAS_EXEC_CONSTANTS: |
| value = INTEL_INFO(dev)->gen >= 4; |
| break; |
| case I915_PARAM_HAS_RELAXED_DELTA: |
| value = 1; |
| break; |
| case I915_PARAM_HAS_GEN7_SOL_RESET: |
| value = 1; |
| break; |
| case I915_PARAM_HAS_LLC: |
| value = HAS_LLC(dev); |
| break; |
| case I915_PARAM_HAS_WT: |
| value = HAS_WT(dev); |
| break; |
| case I915_PARAM_HAS_ALIASING_PPGTT: |
| value = USES_PPGTT(dev); |
| break; |
| case I915_PARAM_HAS_WAIT_TIMEOUT: |
| value = 1; |
| break; |
| case I915_PARAM_HAS_SEMAPHORES: |
| value = i915_semaphore_is_enabled(dev); |
| break; |
| case I915_PARAM_HAS_PRIME_VMAP_FLUSH: |
| value = 1; |
| break; |
| case I915_PARAM_HAS_SECURE_BATCHES: |
| value = capable(CAP_SYS_ADMIN); |
| break; |
| case I915_PARAM_HAS_PINNED_BATCHES: |
| value = 1; |
| break; |
| case I915_PARAM_HAS_EXEC_NO_RELOC: |
| value = 1; |
| break; |
| case I915_PARAM_HAS_EXEC_HANDLE_LUT: |
| value = 1; |
| break; |
| case I915_PARAM_CMD_PARSER_VERSION: |
| value = i915_cmd_parser_get_version(); |
| break; |
| case I915_PARAM_HAS_COHERENT_PHYS_GTT: |
| value = 1; |
| break; |
| case I915_PARAM_MMAP_VERSION: |
| value = 1; |
| break; |
| case I915_PARAM_SUBSLICE_TOTAL: |
| value = INTEL_INFO(dev)->subslice_total; |
| if (!value) |
| return -ENODEV; |
| break; |
| case I915_PARAM_EU_TOTAL: |
| value = INTEL_INFO(dev)->eu_total; |
| if (!value) |
| return -ENODEV; |
| break; |
| case I915_PARAM_HAS_GPU_RESET: |
| value = i915.enable_hangcheck && |
| intel_has_gpu_reset(dev); |
| break; |
| case I915_PARAM_HAS_RESOURCE_STREAMER: |
| value = HAS_RESOURCE_STREAMER(dev); |
| break; |
| case I915_PARAM_HAS_EXEC_SOFTPIN: |
| value = 1; |
| break; |
| default: |
| DRM_DEBUG("Unknown parameter %d\n", param->param); |
| return -EINVAL; |
| } |
| |
| if (copy_to_user(param->value, &value, sizeof(int))) { |
| DRM_ERROR("copy_to_user failed\n"); |
| return -EFAULT; |
| } |
| |
| return 0; |
| } |
| |
| static int i915_get_bridge_dev(struct drm_device *dev) |
| { |
| struct drm_i915_private *dev_priv = dev->dev_private; |
| |
| dev_priv->bridge_dev = pci_get_bus_and_slot(0, PCI_DEVFN(0, 0)); |
| if (!dev_priv->bridge_dev) { |
| DRM_ERROR("bridge device not found\n"); |
| return -1; |
| } |
| 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) |
| { |
| struct drm_i915_private *dev_priv = dev->dev_private; |
| int reg = INTEL_INFO(dev)->gen >= 4 ? MCHBAR_I965 : MCHBAR_I915; |
| u32 temp_lo, temp_hi = 0; |
| u64 mchbar_addr; |
| int ret; |
| |
| if (INTEL_INFO(dev)->gen >= 4) |
| 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)) |
| return 0; |
| #endif |
| |
| /* Get some space for it */ |
| dev_priv->mch_res.name = "i915 MCHBAR"; |
| dev_priv->mch_res.flags = IORESOURCE_MEM; |
| 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; |
| return ret; |
| } |
| |
| if (INTEL_INFO(dev)->gen >= 4) |
| 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)); |
| return 0; |
| } |
| |
| /* Setup MCHBAR if possible, return true if we should disable it again */ |
| static void |
| intel_setup_mchbar(struct drm_device *dev) |
| { |
| struct drm_i915_private *dev_priv = dev->dev_private; |
| int mchbar_reg = INTEL_INFO(dev)->gen >= 4 ? MCHBAR_I965 : MCHBAR_I915; |
| u32 temp; |
| bool enabled; |
| |
| if (IS_VALLEYVIEW(dev) || IS_CHERRYVIEW(dev)) |
| return; |
| |
| 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) |
| { |
| struct drm_i915_private *dev_priv = dev->dev_private; |
| int mchbar_reg = INTEL_INFO(dev)->gen >= 4 ? 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); |
| } |
| |
| /* true = enable decode, false = disable decoder */ |
| static unsigned int i915_vga_set_decode(void *cookie, bool state) |
| { |
| struct drm_device *dev = cookie; |
| |
| intel_modeset_vga_set_state(dev, state); |
| if (state) |
| return VGA_RSRC_LEGACY_IO | VGA_RSRC_LEGACY_MEM | |
| VGA_RSRC_NORMAL_IO | VGA_RSRC_NORMAL_MEM; |
| else |
| 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) { |
| pr_info("switched on\n"); |
| dev->switch_power_state = DRM_SWITCH_POWER_CHANGING; |
| /* i915 resume handler doesn't set to D0 */ |
| pci_set_power_state(dev->pdev, PCI_D0); |
| i915_resume_switcheroo(dev); |
| dev->switch_power_state = DRM_SWITCH_POWER_ON; |
| } else { |
| pr_info("switched off\n"); |
| dev->switch_power_state = DRM_SWITCH_POWER_CHANGING; |
| i915_suspend_switcheroo(dev, pmm); |
| dev->switch_power_state = DRM_SWITCH_POWER_OFF; |
| } |
| } |
| |
| static bool i915_switcheroo_can_switch(struct pci_dev *pdev) |
| { |
| struct drm_device *dev = pci_get_drvdata(pdev); |
| |
| /* |
| * FIXME: open_count is protected by drm_global_mutex but that would lead to |
| * locking inversion with the driver load path. And the access here is |
| * completely racy anyway. So don't bother with locking for now. |
| */ |
| return dev->open_count == 0; |
| } |
| |
| static const struct vga_switcheroo_client_ops i915_switcheroo_ops = { |
| .set_gpu_state = i915_switcheroo_set_state, |
| .reprobe = NULL, |
| .can_switch = i915_switcheroo_can_switch, |
| }; |
| |
| static int i915_load_modeset_init(struct drm_device *dev) |
| { |
| struct drm_i915_private *dev_priv = dev->dev_private; |
| int ret; |
| |
| if (i915_inject_load_failure()) |
| return -ENODEV; |
| |
| ret = intel_bios_init(dev_priv); |
| if (ret) |
| DRM_INFO("failed to find VBIOS tables\n"); |
| |
| /* If we have > 1 VGA cards, then we need to arbitrate access |
| * to the common VGA resources. |
| * |
| * If we are a secondary display controller (!PCI_DISPLAY_CLASS_VGA), |
| * then we do not take part in VGA arbitration and the |
| * vga_client_register() fails with -ENODEV. |
| */ |
| ret = vga_client_register(dev->pdev, dev, NULL, i915_vga_set_decode); |
| if (ret && ret != -ENODEV) |
| goto out; |
| |
| intel_register_dsm_handler(); |
| |
| ret = vga_switcheroo_register_client(dev->pdev, &i915_switcheroo_ops, false); |
| if (ret) |
| goto cleanup_vga_client; |
| |
| intel_power_domains_init_hw(dev_priv, false); |
| |
| intel_csr_ucode_init(dev_priv); |
| |
| ret = intel_irq_install(dev_priv); |
| if (ret) |
| goto cleanup_csr; |
| |
| intel_setup_gmbus(dev); |
| |
| /* Important: The output setup functions called by modeset_init need |
| * working irqs for e.g. gmbus and dp aux transfers. */ |
| intel_modeset_init(dev); |
| |
| intel_guc_ucode_init(dev); |
| |
| ret = i915_gem_init(dev); |
| if (ret) |
| goto cleanup_irq; |
| |
| intel_modeset_gem_init(dev); |
| |
| /* Always safe in the mode setting case. */ |
| /* FIXME: do pre/post-mode set stuff in core KMS code */ |
| dev->vblank_disable_allowed = true; |
| if (INTEL_INFO(dev)->num_pipes == 0) |
| return 0; |
| |
| ret = intel_fbdev_init(dev); |
| if (ret) |
| goto cleanup_gem; |
| |
| /* Only enable hotplug handling once the fbdev is fully set up. */ |
| intel_hpd_init(dev_priv); |
| |
| /* |
| * Some ports require correctly set-up hpd registers for detection to |
| * work properly (leading to ghost connected connector status), e.g. VGA |
| * on gm45. Hence we can only set up the initial fbdev config after hpd |
| * irqs are fully enabled. Now we should scan for the initial config |
| * only once hotplug handling is enabled, but due to screwed-up locking |
| * around kms/fbdev init we can't protect the fdbev initial config |
| * scanning against hotplug events. Hence do this first and ignore the |
| * tiny window where we will loose hotplug notifactions. |
| */ |
| intel_fbdev_initial_config_async(dev); |
| |
| drm_kms_helper_poll_init(dev); |
| |
| return 0; |
| |
| cleanup_gem: |
| mutex_lock(&dev->struct_mutex); |
| i915_gem_cleanup_engines(dev); |
| i915_gem_context_fini(dev); |
| mutex_unlock(&dev->struct_mutex); |
| cleanup_irq: |
| intel_guc_ucode_fini(dev); |
| drm_irq_uninstall(dev); |
| intel_teardown_gmbus(dev); |
| cleanup_csr: |
| intel_csr_ucode_fini(dev_priv); |
| intel_power_domains_fini(dev_priv); |
| vga_switcheroo_unregister_client(dev->pdev); |
| cleanup_vga_client: |
| vga_client_register(dev->pdev, NULL, NULL, NULL); |
| out: |
| return ret; |
| } |
| |
| #if IS_ENABLED(CONFIG_FB) |
| static int i915_kick_out_firmware_fb(struct drm_i915_private *dev_priv) |
| { |
| struct apertures_struct *ap; |
| struct pci_dev *pdev = dev_priv->dev->pdev; |
| struct i915_ggtt *ggtt = &dev_priv->ggtt; |
| bool primary; |
| int ret; |
| |
| ap = alloc_apertures(1); |
| if (!ap) |
| return -ENOMEM; |
| |
| ap->ranges[0].base = ggtt->mappable_base; |
| ap->ranges[0].size = ggtt->mappable_end; |
| |
| primary = |
| pdev->resource[PCI_ROM_RESOURCE].flags & IORESOURCE_ROM_SHADOW; |
| |
| ret = remove_conflicting_framebuffers(ap, "inteldrmfb", primary); |
| |
| kfree(ap); |
| |
| return ret; |
| } |
| #else |
| static int i915_kick_out_firmware_fb(struct drm_i915_private *dev_priv) |
| { |
| return 0; |
| } |
| #endif |
| |
| #if !defined(CONFIG_VGA_CONSOLE) |
| static int i915_kick_out_vgacon(struct drm_i915_private *dev_priv) |
| { |
| return 0; |
| } |
| #elif !defined(CONFIG_DUMMY_CONSOLE) |
| static int i915_kick_out_vgacon(struct drm_i915_private *dev_priv) |
| { |
| return -ENODEV; |
| } |
| #else |
| static int i915_kick_out_vgacon(struct drm_i915_private *dev_priv) |
| { |
| int ret = 0; |
| |
| DRM_INFO("Replacing VGA console driver\n"); |
| |
| console_lock(); |
| if (con_is_bound(&vga_con)) |
| ret = do_take_over_console(&dummy_con, 0, MAX_NR_CONSOLES - 1, 1); |
| if (ret == 0) { |
| ret = do_unregister_con_driver(&vga_con); |
| |
| /* Ignore "already unregistered". */ |
| if (ret == -ENODEV) |
| ret = 0; |
| } |
| console_unlock(); |
| |
| return ret; |
| } |
| #endif |
| |
| static void i915_dump_device_info(struct drm_i915_private *dev_priv) |
| { |
| const struct intel_device_info *info = &dev_priv->info; |
| |
| #define PRINT_S(name) "%s" |
| #define SEP_EMPTY |
| #define PRINT_FLAG(name) info->name ? #name "," : "" |
| #define SEP_COMMA , |
| DRM_DEBUG_DRIVER("i915 device info: gen=%i, pciid=0x%04x rev=0x%02x flags=" |
| DEV_INFO_FOR_EACH_FLAG(PRINT_S, SEP_EMPTY), |
| info->gen, |
| dev_priv->dev->pdev->device, |
| dev_priv->dev->pdev->revision, |
| DEV_INFO_FOR_EACH_FLAG(PRINT_FLAG, SEP_COMMA)); |
| #undef PRINT_S |
| #undef SEP_EMPTY |
| #undef PRINT_FLAG |
| #undef SEP_COMMA |
| } |
| |
| static void cherryview_sseu_info_init(struct drm_device *dev) |
| { |
| struct drm_i915_private *dev_priv = dev->dev_private; |
| struct intel_device_info *info; |
| u32 fuse, eu_dis; |
| |
| info = (struct intel_device_info *)&dev_priv->info; |
| fuse = I915_READ(CHV_FUSE_GT); |
| |
| info->slice_total = 1; |
| |
| if (!(fuse & CHV_FGT_DISABLE_SS0)) { |
| info->subslice_per_slice++; |
| eu_dis = fuse & (CHV_FGT_EU_DIS_SS0_R0_MASK | |
| CHV_FGT_EU_DIS_SS0_R1_MASK); |
| info->eu_total += 8 - hweight32(eu_dis); |
| } |
| |
| if (!(fuse & CHV_FGT_DISABLE_SS1)) { |
| info->subslice_per_slice++; |
| eu_dis = fuse & (CHV_FGT_EU_DIS_SS1_R0_MASK | |
| CHV_FGT_EU_DIS_SS1_R1_MASK); |
| info->eu_total += 8 - hweight32(eu_dis); |
| } |
| |
| info->subslice_total = info->subslice_per_slice; |
| /* |
| * CHV expected to always have a uniform distribution of EU |
| * across subslices. |
| */ |
| info->eu_per_subslice = info->subslice_total ? |
| info->eu_total / info->subslice_total : |
| 0; |
| /* |
| * CHV supports subslice power gating on devices with more than |
| * one subslice, and supports EU power gating on devices with |
| * more than one EU pair per subslice. |
| */ |
| info->has_slice_pg = 0; |
| info->has_subslice_pg = (info->subslice_total > 1); |
| info->has_eu_pg = (info->eu_per_subslice > 2); |
| } |
| |
| static void gen9_sseu_info_init(struct drm_device *dev) |
| { |
| struct drm_i915_private *dev_priv = dev->dev_private; |
| struct intel_device_info *info; |
| int s_max = 3, ss_max = 4, eu_max = 8; |
| int s, ss; |
| u32 fuse2, s_enable, ss_disable, eu_disable; |
| u8 eu_mask = 0xff; |
| |
| info = (struct intel_device_info *)&dev_priv->info; |
| fuse2 = I915_READ(GEN8_FUSE2); |
| s_enable = (fuse2 & GEN8_F2_S_ENA_MASK) >> |
| GEN8_F2_S_ENA_SHIFT; |
| ss_disable = (fuse2 & GEN9_F2_SS_DIS_MASK) >> |
| GEN9_F2_SS_DIS_SHIFT; |
| |
| info->slice_total = hweight32(s_enable); |
| /* |
| * The subslice disable field is global, i.e. it applies |
| * to each of the enabled slices. |
| */ |
| info->subslice_per_slice = ss_max - hweight32(ss_disable); |
| info->subslice_total = info->slice_total * |
| info->subslice_per_slice; |
| |
| /* |
| * Iterate through enabled slices and subslices to |
| * count the total enabled EU. |
| */ |
| for (s = 0; s < s_max; s++) { |
| if (!(s_enable & (0x1 << s))) |
| /* skip disabled slice */ |
| continue; |
| |
| eu_disable = I915_READ(GEN9_EU_DISABLE(s)); |
| for (ss = 0; ss < ss_max; ss++) { |
| int eu_per_ss; |
| |
| if (ss_disable & (0x1 << ss)) |
| /* skip disabled subslice */ |
| continue; |
| |
| eu_per_ss = eu_max - hweight8((eu_disable >> (ss*8)) & |
| eu_mask); |
| |
| /* |
| * Record which subslice(s) has(have) 7 EUs. we |
| * can tune the hash used to spread work among |
| * subslices if they are unbalanced. |
| */ |
| if (eu_per_ss == 7) |
| info->subslice_7eu[s] |= 1 << ss; |
| |
| info->eu_total += eu_per_ss; |
| } |
| } |
| |
| /* |
| * SKL is expected to always have a uniform distribution |
| * of EU across subslices with the exception that any one |
| * EU in any one subslice may be fused off for die |
| * recovery. BXT is expected to be perfectly uniform in EU |
| * distribution. |
| */ |
| info->eu_per_subslice = info->subslice_total ? |
| DIV_ROUND_UP(info->eu_total, |
| info->subslice_total) : 0; |
| /* |
| * SKL supports slice power gating on devices with more than |
| * one slice, and supports EU power gating on devices with |
| * more than one EU pair per subslice. BXT supports subslice |
| * power gating on devices with more than one subslice, and |
| * supports EU power gating on devices with more than one EU |
| * pair per subslice. |
| */ |
| info->has_slice_pg = ((IS_SKYLAKE(dev) || IS_KABYLAKE(dev)) && |
| (info->slice_total > 1)); |
| info->has_subslice_pg = (IS_BROXTON(dev) && (info->subslice_total > 1)); |
| info->has_eu_pg = (info->eu_per_subslice > 2); |
| } |
| |
| static void broadwell_sseu_info_init(struct drm_device *dev) |
| { |
| struct drm_i915_private *dev_priv = dev->dev_private; |
| struct intel_device_info *info; |
| const int s_max = 3, ss_max = 3, eu_max = 8; |
| int s, ss; |
| u32 fuse2, eu_disable[s_max], s_enable, ss_disable; |
| |
| fuse2 = I915_READ(GEN8_FUSE2); |
| s_enable = (fuse2 & GEN8_F2_S_ENA_MASK) >> GEN8_F2_S_ENA_SHIFT; |
| ss_disable = (fuse2 & GEN8_F2_SS_DIS_MASK) >> GEN8_F2_SS_DIS_SHIFT; |
| |
| eu_disable[0] = I915_READ(GEN8_EU_DISABLE0) & GEN8_EU_DIS0_S0_MASK; |
| eu_disable[1] = (I915_READ(GEN8_EU_DISABLE0) >> GEN8_EU_DIS0_S1_SHIFT) | |
| ((I915_READ(GEN8_EU_DISABLE1) & GEN8_EU_DIS1_S1_MASK) << |
| (32 - GEN8_EU_DIS0_S1_SHIFT)); |
| eu_disable[2] = (I915_READ(GEN8_EU_DISABLE1) >> GEN8_EU_DIS1_S2_SHIFT) | |
| ((I915_READ(GEN8_EU_DISABLE2) & GEN8_EU_DIS2_S2_MASK) << |
| (32 - GEN8_EU_DIS1_S2_SHIFT)); |
| |
| |
| info = (struct intel_device_info *)&dev_priv->info; |
| info->slice_total = hweight32(s_enable); |
| |
| /* |
| * The subslice disable field is global, i.e. it applies |
| * to each of the enabled slices. |
| */ |
| info->subslice_per_slice = ss_max - hweight32(ss_disable); |
| info->subslice_total = info->slice_total * info->subslice_per_slice; |
| |
| /* |
| * Iterate through enabled slices and subslices to |
| * count the total enabled EU. |
| */ |
| for (s = 0; s < s_max; s++) { |
| if (!(s_enable & (0x1 << s))) |
| /* skip disabled slice */ |
| continue; |
| |
| for (ss = 0; ss < ss_max; ss++) { |
| u32 n_disabled; |
| |
| if (ss_disable & (0x1 << ss)) |
| /* skip disabled subslice */ |
| continue; |
| |
| n_disabled = hweight8(eu_disable[s] >> (ss * eu_max)); |
| |
| /* |
| * Record which subslices have 7 EUs. |
| */ |
| if (eu_max - n_disabled == 7) |
| info->subslice_7eu[s] |= 1 << ss; |
| |
| info->eu_total += eu_max - n_disabled; |
| } |
| } |
| |
| /* |
| * BDW is expected to always have a uniform distribution of EU across |
| * subslices with the exception that any one EU in any one subslice may |
| * be fused off for die recovery. |
| */ |
| info->eu_per_subslice = info->subslice_total ? |
| DIV_ROUND_UP(info->eu_total, info->subslice_total) : 0; |
| |
| /* |
| * BDW supports slice power gating on devices with more than |
| * one slice. |
| */ |
| info->has_slice_pg = (info->slice_total > 1); |
| info->has_subslice_pg = 0; |
| info->has_eu_pg = 0; |
| } |
| |
| /* |
| * Determine various intel_device_info fields at runtime. |
| * |
| * Use it when either: |
| * - it's judged too laborious to fill n static structures with the limit |
| * when a simple if statement does the job, |
| * - run-time checks (eg read fuse/strap registers) are needed. |
| * |
| * This function needs to be called: |
| * - after the MMIO has been setup as we are reading registers, |
| * - after the PCH has been detected, |
| * - before the first usage of the fields it can tweak. |
| */ |
| static void intel_device_info_runtime_init(struct drm_device *dev) |
| { |
| struct drm_i915_private *dev_priv = dev->dev_private; |
| struct intel_device_info *info; |
| enum pipe pipe; |
| |
| info = (struct intel_device_info *)&dev_priv->info; |
| |
| /* |
| * Skylake and Broxton currently don't expose the topmost plane as its |
| * use is exclusive with the legacy cursor and we only want to expose |
| * one of those, not both. Until we can safely expose the topmost plane |
| * as a DRM_PLANE_TYPE_CURSOR with all the features exposed/supported, |
| * we don't expose the topmost plane at all to prevent ABI breakage |
| * down the line. |
| */ |
| if (IS_BROXTON(dev)) { |
| info->num_sprites[PIPE_A] = 2; |
| info->num_sprites[PIPE_B] = 2; |
| info->num_sprites[PIPE_C] = 1; |
| } else if (IS_VALLEYVIEW(dev) || IS_CHERRYVIEW(dev)) |
| for_each_pipe(dev_priv, pipe) |
| info->num_sprites[pipe] = 2; |
| else |
| for_each_pipe(dev_priv, pipe) |
| info->num_sprites[pipe] = 1; |
| |
| if (i915.disable_display) { |
| DRM_INFO("Display disabled (module parameter)\n"); |
| info->num_pipes = 0; |
| } else if (info->num_pipes > 0 && |
| (INTEL_INFO(dev)->gen == 7 || INTEL_INFO(dev)->gen == 8) && |
| HAS_PCH_SPLIT(dev)) { |
| u32 fuse_strap = I915_READ(FUSE_STRAP); |
| u32 sfuse_strap = I915_READ(SFUSE_STRAP); |
| |
| /* |
| * SFUSE_STRAP is supposed to have a bit signalling the display |
| * is fused off. Unfortunately it seems that, at least in |
| * certain cases, fused off display means that PCH display |
| * reads don't land anywhere. In that case, we read 0s. |
| * |
| * On CPT/PPT, we can detect this case as SFUSE_STRAP_FUSE_LOCK |
| * should be set when taking over after the firmware. |
| */ |
| if (fuse_strap & ILK_INTERNAL_DISPLAY_DISABLE || |
| sfuse_strap & SFUSE_STRAP_DISPLAY_DISABLED || |
| (dev_priv->pch_type == PCH_CPT && |
| !(sfuse_strap & SFUSE_STRAP_FUSE_LOCK))) { |
| DRM_INFO("Display fused off, disabling\n"); |
| info->num_pipes = 0; |
| } else if (fuse_strap & IVB_PIPE_C_DISABLE) { |
| DRM_INFO("PipeC fused off\n"); |
| info->num_pipes -= 1; |
| } |
| } else if (info->num_pipes > 0 && INTEL_INFO(dev)->gen == 9) { |
| u32 dfsm = I915_READ(SKL_DFSM); |
| u8 disabled_mask = 0; |
| bool invalid; |
| int num_bits; |
| |
| if (dfsm & SKL_DFSM_PIPE_A_DISABLE) |
| disabled_mask |= BIT(PIPE_A); |
| if (dfsm & SKL_DFSM_PIPE_B_DISABLE) |
| disabled_mask |= BIT(PIPE_B); |
| if (dfsm & SKL_DFSM_PIPE_C_DISABLE) |
| disabled_mask |= BIT(PIPE_C); |
| |
| num_bits = hweight8(disabled_mask); |
| |
| switch (disabled_mask) { |
| case BIT(PIPE_A): |
| case BIT(PIPE_B): |
| case BIT(PIPE_A) | BIT(PIPE_B): |
| case BIT(PIPE_A) | BIT(PIPE_C): |
| invalid = true; |
| break; |
| default: |
| invalid = false; |
| } |
| |
| if (num_bits > info->num_pipes || invalid) |
| DRM_ERROR("invalid pipe fuse configuration: 0x%x\n", |
| disabled_mask); |
| else |
| info->num_pipes -= num_bits; |
| } |
| |
| /* Initialize slice/subslice/EU info */ |
| if (IS_CHERRYVIEW(dev)) |
| cherryview_sseu_info_init(dev); |
| else if (IS_BROADWELL(dev)) |
| broadwell_sseu_info_init(dev); |
| else if (INTEL_INFO(dev)->gen >= 9) |
| gen9_sseu_info_init(dev); |
| |
| /* Snooping is broken on BXT A stepping. */ |
| info->has_snoop = !info->has_llc; |
| info->has_snoop &= !IS_BXT_REVID(dev, 0, BXT_REVID_A1); |
| |
| DRM_DEBUG_DRIVER("slice total: %u\n", info->slice_total); |
| DRM_DEBUG_DRIVER("subslice total: %u\n", info->subslice_total); |
| DRM_DEBUG_DRIVER("subslice per slice: %u\n", info->subslice_per_slice); |
| DRM_DEBUG_DRIVER("EU total: %u\n", info->eu_total); |
| DRM_DEBUG_DRIVER("EU per subslice: %u\n", info->eu_per_subslice); |
| DRM_DEBUG_DRIVER("has slice power gating: %s\n", |
| info->has_slice_pg ? "y" : "n"); |
| DRM_DEBUG_DRIVER("has subslice power gating: %s\n", |
| info->has_subslice_pg ? "y" : "n"); |
| DRM_DEBUG_DRIVER("has EU power gating: %s\n", |
| info->has_eu_pg ? "y" : "n"); |
| } |
| |
| static void intel_init_dpio(struct drm_i915_private *dev_priv) |
| { |
| /* |
| * IOSF_PORT_DPIO is used for VLV x2 PHY (DP/HDMI B and C), |
| * CHV x1 PHY (DP/HDMI D) |
| * IOSF_PORT_DPIO_2 is used for CHV x2 PHY (DP/HDMI B and C) |
| */ |
| if (IS_CHERRYVIEW(dev_priv)) { |
| DPIO_PHY_IOSF_PORT(DPIO_PHY0) = IOSF_PORT_DPIO_2; |
| DPIO_PHY_IOSF_PORT(DPIO_PHY1) = IOSF_PORT_DPIO; |
| } else if (IS_VALLEYVIEW(dev_priv)) { |
| DPIO_PHY_IOSF_PORT(DPIO_PHY0) = IOSF_PORT_DPIO; |
| } |
| } |
| |
| static int i915_workqueues_init(struct drm_i915_private *dev_priv) |
| { |
| /* |
| * The i915 workqueue is primarily used for batched retirement of |
| * requests (and thus managing bo) once the task has been completed |
| * by the GPU. i915_gem_retire_requests() is called directly when we |
| * need high-priority retirement, such as waiting for an explicit |
| * bo. |
| * |
| * It is also used for periodic low-priority events, such as |
| * idle-timers and recording error state. |
| * |
| * All tasks on the workqueue are expected to acquire the dev mutex |
| * so there is no point in running more than one instance of the |
| * workqueue at any time. Use an ordered one. |
| */ |
| dev_priv->wq = alloc_ordered_workqueue("i915", 0); |
| if (dev_priv->wq == NULL) |
| goto out_err; |
| |
| dev_priv->hotplug.dp_wq = alloc_ordered_workqueue("i915-dp", 0); |
| if (dev_priv->hotplug.dp_wq == NULL) |
| goto out_free_wq; |
| |
| dev_priv->gpu_error.hangcheck_wq = |
| alloc_ordered_workqueue("i915-hangcheck", 0); |
| if (dev_priv->gpu_error.hangcheck_wq == NULL) |
| goto out_free_dp_wq; |
| |
| return 0; |
| |
| out_free_dp_wq: |
| destroy_workqueue(dev_priv->hotplug.dp_wq); |
| out_free_wq: |
| destroy_workqueue(dev_priv->wq); |
| out_err: |
| DRM_ERROR("Failed to allocate workqueues.\n"); |
| |
| return -ENOMEM; |
| } |
| |
| static void i915_workqueues_cleanup(struct drm_i915_private *dev_priv) |
| { |
| destroy_workqueue(dev_priv->gpu_error.hangcheck_wq); |
| destroy_workqueue(dev_priv->hotplug.dp_wq); |
| destroy_workqueue(dev_priv->wq); |
| } |
| |
| /** |
| * i915_driver_init_early - setup state not requiring device access |
| * @dev_priv: device private |
| * |
| * Initialize everything that is a "SW-only" state, that is state not |
| * requiring accessing the device or exposing the driver via kernel internal |
| * or userspace interfaces. Example steps belonging here: lock initialization, |
| * system memory allocation, setting up device specific attributes and |
| * function hooks not requiring accessing the device. |
| */ |
| static int i915_driver_init_early(struct drm_i915_private *dev_priv, |
| struct drm_device *dev, |
| struct intel_device_info *info) |
| { |
| struct intel_device_info *device_info; |
| int ret = 0; |
| |
| if (i915_inject_load_failure()) |
| return -ENODEV; |
| |
| /* Setup the write-once "constant" device info */ |
| device_info = (struct intel_device_info *)&dev_priv->info; |
| memcpy(device_info, info, sizeof(dev_priv->info)); |
| device_info->device_id = dev->pdev->device; |
| |
| spin_lock_init(&dev_priv->irq_lock); |
| spin_lock_init(&dev_priv->gpu_error.lock); |
| mutex_init(&dev_priv->backlight_lock); |
| spin_lock_init(&dev_priv->uncore.lock); |
| spin_lock_init(&dev_priv->mm.object_stat_lock); |
| spin_lock_init(&dev_priv->mmio_flip_lock); |
| mutex_init(&dev_priv->sb_lock); |
| mutex_init(&dev_priv->modeset_restore_lock); |
| mutex_init(&dev_priv->av_mutex); |
| mutex_init(&dev_priv->wm.wm_mutex); |
| mutex_init(&dev_priv->pps_mutex); |
| |
| ret = i915_workqueues_init(dev_priv); |
| if (ret < 0) |
| return ret; |
| |
| /* This must be called before any calls to HAS_PCH_* */ |
| intel_detect_pch(dev); |
| |
| intel_pm_setup(dev); |
| intel_init_dpio(dev_priv); |
| intel_power_domains_init(dev_priv); |
| intel_irq_init(dev_priv); |
| intel_init_display_hooks(dev_priv); |
| intel_init_clock_gating_hooks(dev_priv); |
| intel_init_audio_hooks(dev_priv); |
| i915_gem_load_init(dev); |
| |
| intel_display_crc_init(dev); |
| |
| i915_dump_device_info(dev_priv); |
| |
| /* Not all pre-production machines fall into this category, only the |
| * very first ones. Almost everything should work, except for maybe |
| * suspend/resume. And we don't implement workarounds that affect only |
| * pre-production machines. */ |
| if (IS_HSW_EARLY_SDV(dev)) |
| DRM_INFO("This is an early pre-production Haswell machine. " |
| "It may not be fully functional.\n"); |
| |
| return 0; |
| } |
| |
| /** |
| * i915_driver_cleanup_early - cleanup the setup done in i915_driver_init_early() |
| * @dev_priv: device private |
| */ |
| static void i915_driver_cleanup_early(struct drm_i915_private *dev_priv) |
| { |
| i915_gem_load_cleanup(dev_priv->dev); |
| i915_workqueues_cleanup(dev_priv); |
| } |
| |
| static int i915_mmio_setup(struct drm_device *dev) |
| { |
| struct drm_i915_private *dev_priv = to_i915(dev); |
| int mmio_bar; |
| int mmio_size; |
| |
| mmio_bar = IS_GEN2(dev) ? 1 : 0; |
| /* |
| * Before gen4, the registers and the GTT are behind different BARs. |
| * However, from gen4 onwards, the registers and the GTT are shared |
| * in the same BAR, so we want to restrict this ioremap from |
| * clobbering the GTT which we want ioremap_wc instead. Fortunately, |
| * the register BAR remains the same size for all the earlier |
| * generations up to Ironlake. |
| */ |
| if (INTEL_INFO(dev)->gen < 5) |
| mmio_size = 512 * 1024; |
| else |
| mmio_size = 2 * 1024 * 1024; |
| dev_priv->regs = pci_iomap(dev->pdev, mmio_bar, mmio_size); |
| if (dev_priv->regs == NULL) { |
| DRM_ERROR("failed to map registers\n"); |
| |
| return -EIO; |
| } |
| |
| /* Try to make sure MCHBAR is enabled before poking at it */ |
| intel_setup_mchbar(dev); |
| |
| return 0; |
| } |
| |
| static void i915_mmio_cleanup(struct drm_device *dev) |
| { |
| struct drm_i915_private *dev_priv = to_i915(dev); |
| |
| intel_teardown_mchbar(dev); |
| pci_iounmap(dev->pdev, dev_priv->regs); |
| } |
| |
| /** |
| * i915_driver_init_mmio - setup device MMIO |
| * @dev_priv: device private |
| * |
| * Setup minimal device state necessary for MMIO accesses later in the |
| * initialization sequence. The setup here should avoid any other device-wide |
| * side effects or exposing the driver via kernel internal or user space |
| * interfaces. |
| */ |
| static int i915_driver_init_mmio(struct drm_i915_private *dev_priv) |
| { |
| struct drm_device *dev = dev_priv->dev; |
| int ret; |
| |
| if (i915_inject_load_failure()) |
| return -ENODEV; |
| |
| if (i915_get_bridge_dev(dev)) |
| return -EIO; |
| |
| ret = i915_mmio_setup(dev); |
| if (ret < 0) |
| goto put_bridge; |
| |
| intel_uncore_init(dev); |
| |
| return 0; |
| |
| put_bridge: |
| pci_dev_put(dev_priv->bridge_dev); |
| |
| return ret; |
| } |
| |
| /** |
| * i915_driver_cleanup_mmio - cleanup the setup done in i915_driver_init_mmio() |
| * @dev_priv: device private |
| */ |
| static void i915_driver_cleanup_mmio(struct drm_i915_private *dev_priv) |
| { |
| struct drm_device *dev = dev_priv->dev; |
| |
| intel_uncore_fini(dev); |
| i915_mmio_cleanup(dev); |
| pci_dev_put(dev_priv->bridge_dev); |
| } |
| |
| /** |
| * i915_driver_init_hw - setup state requiring device access |
| * @dev_priv: device private |
| * |
| * Setup state that requires accessing the device, but doesn't require |
| * exposing the driver via kernel internal or userspace interfaces. |
| */ |
| static int i915_driver_init_hw(struct drm_i915_private *dev_priv) |
| { |
| struct drm_device *dev = dev_priv->dev; |
| struct i915_ggtt *ggtt = &dev_priv->ggtt; |
| uint32_t aperture_size; |
| int ret; |
| |
| if (i915_inject_load_failure()) |
| return -ENODEV; |
| |
| intel_device_info_runtime_init(dev); |
| |
| ret = i915_ggtt_init_hw(dev); |
| if (ret) |
| return ret; |
| |
| /* WARNING: Apparently we must kick fbdev drivers before vgacon, |
| * otherwise the vga fbdev driver falls over. */ |
| ret = i915_kick_out_firmware_fb(dev_priv); |
| if (ret) { |
| DRM_ERROR("failed to remove conflicting framebuffer drivers\n"); |
| goto out_ggtt; |
| } |
| |
| ret = i915_kick_out_vgacon(dev_priv); |
| if (ret) { |
| DRM_ERROR("failed to remove conflicting VGA console\n"); |
| goto out_ggtt; |
| } |
| |
| pci_set_master(dev->pdev); |
| |
| /* overlay on gen2 is broken and can't address above 1G */ |
| if (IS_GEN2(dev)) |
| dma_set_coherent_mask(&dev->pdev->dev, DMA_BIT_MASK(30)); |
| |
| /* 965GM sometimes incorrectly writes to hardware status page (HWS) |
| * using 32bit addressing, overwriting memory if HWS is located |
| * above 4GB. |
| * |
| * The documentation also mentions an issue with undefined |
| * behaviour if any general state is accessed within a page above 4GB, |
| * which also needs to be handled carefully. |
| */ |
| if (IS_BROADWATER(dev) || IS_CRESTLINE(dev)) |
| dma_set_coherent_mask(&dev->pdev->dev, DMA_BIT_MASK(32)); |
| |
| aperture_size = ggtt->mappable_end; |
| |
| ggtt->mappable = |
| io_mapping_create_wc(ggtt->mappable_base, |
| aperture_size); |
| if (!ggtt->mappable) { |
| ret = -EIO; |
| goto out_ggtt; |
| } |
| |
| ggtt->mtrr = arch_phys_wc_add(ggtt->mappable_base, |
| aperture_size); |
| |
| pm_qos_add_request(&dev_priv->pm_qos, PM_QOS_CPU_DMA_LATENCY, |
| PM_QOS_DEFAULT_VALUE); |
| |
| intel_uncore_sanitize(dev); |
| |
| intel_opregion_setup(dev); |
| |
| i915_gem_load_init_fences(dev_priv); |
| |
| /* On the 945G/GM, the chipset reports the MSI capability on the |
| * integrated graphics even though the support isn't actually there |
| * according to the published specs. It doesn't appear to function |
| * correctly in testing on 945G. |
| * This may be a side effect of MSI having been made available for PEG |
| * and the registers being closely associated. |
| * |
| * According to chipset errata, on the 965GM, MSI interrupts may |
| * be lost or delayed, but we use them anyways to avoid |
| * stuck interrupts on some machines. |
| */ |
| if (!IS_I945G(dev) && !IS_I945GM(dev)) { |
| if (pci_enable_msi(dev->pdev) < 0) |
| DRM_DEBUG_DRIVER("can't enable MSI"); |
| } |
| |
| return 0; |
| |
| out_ggtt: |
| i915_ggtt_cleanup_hw(dev); |
| |
| return ret; |
| } |
| |
| /** |
| * i915_driver_cleanup_hw - cleanup the setup done in i915_driver_init_hw() |
| * @dev_priv: device private |
| */ |
| static void i915_driver_cleanup_hw(struct drm_i915_private *dev_priv) |
| { |
| struct drm_device *dev = dev_priv->dev; |
| struct i915_ggtt *ggtt = &dev_priv->ggtt; |
| |
| if (dev->pdev->msi_enabled) |
| pci_disable_msi(dev->pdev); |
| |
| pm_qos_remove_request(&dev_priv->pm_qos); |
| arch_phys_wc_del(ggtt->mtrr); |
| io_mapping_free(ggtt->mappable); |
| i915_ggtt_cleanup_hw(dev); |
| } |
| |
| /** |
| * i915_driver_register - register the driver with the rest of the system |
| * @dev_priv: device private |
| * |
| * Perform any steps necessary to make the driver available via kernel |
| * internal or userspace interfaces. |
| */ |
| static void i915_driver_register(struct drm_i915_private *dev_priv) |
| { |
| struct drm_device *dev = dev_priv->dev; |
| |
| i915_gem_shrinker_init(dev_priv); |
| /* |
| * Notify a valid surface after modesetting, |
| * when running inside a VM. |
| */ |
| if (intel_vgpu_active(dev)) |
| I915_WRITE(vgtif_reg(display_ready), VGT_DRV_DISPLAY_READY); |
| |
| i915_setup_sysfs(dev); |
| |
| if (INTEL_INFO(dev_priv)->num_pipes) { |
| /* Must be done after probing outputs */ |
| intel_opregion_init(dev); |
| acpi_video_register(); |
| } |
| |
| if (IS_GEN5(dev_priv)) |
| intel_gpu_ips_init(dev_priv); |
| |
| i915_audio_component_init(dev_priv); |
| } |
| |
| /** |
| * i915_driver_unregister - cleanup the registration done in i915_driver_regiser() |
| * @dev_priv: device private |
| */ |
| static void i915_driver_unregister(struct drm_i915_private *dev_priv) |
| { |
| i915_audio_component_cleanup(dev_priv); |
| intel_gpu_ips_teardown(); |
| acpi_video_unregister(); |
| intel_opregion_fini(dev_priv->dev); |
| i915_teardown_sysfs(dev_priv->dev); |
| i915_gem_shrinker_cleanup(dev_priv); |
| } |
| |
| /** |
| * 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; |
| int ret = 0; |
| |
| dev_priv = kzalloc(sizeof(*dev_priv), GFP_KERNEL); |
| if (dev_priv == NULL) |
| return -ENOMEM; |
| |
| dev->dev_private = dev_priv; |
| /* Must be set before calling __i915_printk */ |
| dev_priv->dev = dev; |
| |
| ret = i915_driver_init_early(dev_priv, dev, |
| (struct intel_device_info *)flags); |
| |
| if (ret < 0) |
| goto out_free_priv; |
| |
| intel_runtime_pm_get(dev_priv); |
| |
| ret = i915_driver_init_mmio(dev_priv); |
| if (ret < 0) |
| goto out_runtime_pm_put; |
| |
| ret = i915_driver_init_hw(dev_priv); |
| if (ret < 0) |
| goto out_cleanup_mmio; |
| |
| /* |
| * TODO: move the vblank init and parts of modeset init steps into one |
| * of the i915_driver_init_/i915_driver_register functions according |
| * to the role/effect of the given init step. |
| */ |
| if (INTEL_INFO(dev)->num_pipes) { |
| ret = drm_vblank_init(dev, INTEL_INFO(dev)->num_pipes); |
| if (ret) |
| goto out_cleanup_hw; |
| } |
| |
| ret = i915_load_modeset_init(dev); |
| if (ret < 0) |
| goto out_cleanup_vblank; |
| |
| i915_driver_register(dev_priv); |
| |
| intel_runtime_pm_enable(dev_priv); |
| |
| intel_runtime_pm_put(dev_priv); |
| |
| return 0; |
| |
| out_cleanup_vblank: |
| drm_vblank_cleanup(dev); |
| out_cleanup_hw: |
| i915_driver_cleanup_hw(dev_priv); |
| out_cleanup_mmio: |
| i915_driver_cleanup_mmio(dev_priv); |
| out_runtime_pm_put: |
| intel_runtime_pm_put(dev_priv); |
| i915_driver_cleanup_early(dev_priv); |
| out_free_priv: |
| i915_load_error(dev_priv, "Device initialization failed (%d)\n", ret); |
| |
| kfree(dev_priv); |
| |
| return ret; |
| } |
| |
| int i915_driver_unload(struct drm_device *dev) |
| { |
| struct drm_i915_private *dev_priv = dev->dev_private; |
| int ret; |
| |
| intel_fbdev_fini(dev); |
| |
| ret = i915_gem_suspend(dev); |
| if (ret) { |
| DRM_ERROR("failed to idle hardware: %d\n", ret); |
| return ret; |
| } |
| |
| intel_display_power_get(dev_priv, POWER_DOMAIN_INIT); |
| |
| i915_driver_unregister(dev_priv); |
| |
| drm_vblank_cleanup(dev); |
| |
| intel_modeset_cleanup(dev); |
| |
| /* |
| * free the memory space allocated for the child device |
| * config parsed from VBT |
| */ |
| if (dev_priv->vbt.child_dev && dev_priv->vbt.child_dev_num) { |
| kfree(dev_priv->vbt.child_dev); |
| dev_priv->vbt.child_dev = NULL; |
| dev_priv->vbt.child_dev_num = 0; |
| } |
| kfree(dev_priv->vbt.sdvo_lvds_vbt_mode); |
| dev_priv->vbt.sdvo_lvds_vbt_mode = NULL; |
| kfree(dev_priv->vbt.lfp_lvds_vbt_mode); |
| dev_priv->vbt.lfp_lvds_vbt_mode = NULL; |
| |
| vga_switcheroo_unregister_client(dev->pdev); |
| vga_client_register(dev->pdev, NULL, NULL, NULL); |
| |
| intel_csr_ucode_fini(dev_priv); |
| |
| /* Free error state after interrupts are fully disabled. */ |
| cancel_delayed_work_sync(&dev_priv->gpu_error.hangcheck_work); |
| i915_destroy_error_state(dev); |
| |
| /* Flush any outstanding unpin_work. */ |
| flush_workqueue(dev_priv->wq); |
| |
| intel_guc_ucode_fini(dev); |
| mutex_lock(&dev->struct_mutex); |
| i915_gem_cleanup_engines(dev); |
| i915_gem_context_fini(dev); |
| mutex_unlock(&dev->struct_mutex); |
| intel_fbc_cleanup_cfb(dev_priv); |
| |
| intel_power_domains_fini(dev_priv); |
| |
| i915_driver_cleanup_hw(dev_priv); |
| i915_driver_cleanup_mmio(dev_priv); |
| |
| intel_display_power_put(dev_priv, POWER_DOMAIN_INIT); |
| |
| i915_driver_cleanup_early(dev_priv); |
| kfree(dev_priv); |
| |
| return 0; |
| } |
| |
| int i915_driver_open(struct drm_device *dev, struct drm_file *file) |
| { |
| int ret; |
| |
| ret = i915_gem_open(dev, file); |
| if (ret) |
| return ret; |
| |
| 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 GTT |
| * 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) |
| { |
| intel_fbdev_restore_mode(dev); |
| vga_switcheroo_process_delayed_switch(); |
| } |
| |
| void i915_driver_preclose(struct drm_device *dev, struct drm_file *file) |
| { |
| mutex_lock(&dev->struct_mutex); |
| i915_gem_context_close(dev, file); |
| i915_gem_release(dev, file); |
| mutex_unlock(&dev->struct_mutex); |
| } |
| |
| void i915_driver_postclose(struct drm_device *dev, struct drm_file *file) |
| { |
| struct drm_i915_file_private *file_priv = file->driver_priv; |
| |
| kfree(file_priv); |
| } |
| |
| static int |
| i915_gem_reject_pin_ioctl(struct drm_device *dev, void *data, |
| struct drm_file *file) |
| { |
| return -ENODEV; |
| } |
| |
| const struct drm_ioctl_desc i915_ioctls[] = { |
| DRM_IOCTL_DEF_DRV(I915_INIT, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), |
| DRM_IOCTL_DEF_DRV(I915_FLUSH, drm_noop, DRM_AUTH), |
| DRM_IOCTL_DEF_DRV(I915_FLIP, drm_noop, DRM_AUTH), |
| DRM_IOCTL_DEF_DRV(I915_BATCHBUFFER, drm_noop, DRM_AUTH), |
| DRM_IOCTL_DEF_DRV(I915_IRQ_EMIT, drm_noop, DRM_AUTH), |
| DRM_IOCTL_DEF_DRV(I915_IRQ_WAIT, drm_noop, DRM_AUTH), |
| DRM_IOCTL_DEF_DRV(I915_GETPARAM, i915_getparam, DRM_AUTH|DRM_RENDER_ALLOW), |
| DRM_IOCTL_DEF_DRV(I915_SETPARAM, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), |
| DRM_IOCTL_DEF_DRV(I915_ALLOC, drm_noop, DRM_AUTH), |
| DRM_IOCTL_DEF_DRV(I915_FREE, drm_noop, DRM_AUTH), |
| DRM_IOCTL_DEF_DRV(I915_INIT_HEAP, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), |
| DRM_IOCTL_DEF_DRV(I915_CMDBUFFER, drm_noop, DRM_AUTH), |
| DRM_IOCTL_DEF_DRV(I915_DESTROY_HEAP, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), |
| DRM_IOCTL_DEF_DRV(I915_SET_VBLANK_PIPE, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), |
| DRM_IOCTL_DEF_DRV(I915_GET_VBLANK_PIPE, drm_noop, DRM_AUTH), |
| DRM_IOCTL_DEF_DRV(I915_VBLANK_SWAP, drm_noop, DRM_AUTH), |
| DRM_IOCTL_DEF_DRV(I915_HWS_ADDR, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), |
| DRM_IOCTL_DEF_DRV(I915_GEM_INIT, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), |
| DRM_IOCTL_DEF_DRV(I915_GEM_EXECBUFFER, i915_gem_execbuffer, DRM_AUTH), |
| DRM_IOCTL_DEF_DRV(I915_GEM_EXECBUFFER2, i915_gem_execbuffer2, DRM_AUTH|DRM_RENDER_ALLOW), |
| DRM_IOCTL_DEF_DRV(I915_GEM_PIN, i915_gem_reject_pin_ioctl, DRM_AUTH|DRM_ROOT_ONLY), |
| DRM_IOCTL_DEF_DRV(I915_GEM_UNPIN, i915_gem_reject_pin_ioctl, DRM_AUTH|DRM_ROOT_ONLY), |
| DRM_IOCTL_DEF_DRV(I915_GEM_BUSY, i915_gem_busy_ioctl, DRM_AUTH|DRM_RENDER_ALLOW), |
| DRM_IOCTL_DEF_DRV(I915_GEM_SET_CACHING, i915_gem_set_caching_ioctl, DRM_RENDER_ALLOW), |
| DRM_IOCTL_DEF_DRV(I915_GEM_GET_CACHING, i915_gem_get_caching_ioctl, DRM_RENDER_ALLOW), |
| DRM_IOCTL_DEF_DRV(I915_GEM_THROTTLE, i915_gem_throttle_ioctl, DRM_AUTH|DRM_RENDER_ALLOW), |
| DRM_IOCTL_DEF_DRV(I915_GEM_ENTERVT, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), |
| DRM_IOCTL_DEF_DRV(I915_GEM_LEAVEVT, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), |
| DRM_IOCTL_DEF_DRV(I915_GEM_CREATE, i915_gem_create_ioctl, DRM_RENDER_ALLOW), |
| DRM_IOCTL_DEF_DRV(I915_GEM_PREAD, i915_gem_pread_ioctl, DRM_RENDER_ALLOW), |
| DRM_IOCTL_DEF_DRV(I915_GEM_PWRITE, i915_gem_pwrite_ioctl, DRM_RENDER_ALLOW), |
| DRM_IOCTL_DEF_DRV(I915_GEM_MMAP, i915_gem_mmap_ioctl, DRM_RENDER_ALLOW), |
| DRM_IOCTL_DEF_DRV(I915_GEM_MMAP_GTT, i915_gem_mmap_gtt_ioctl, DRM_RENDER_ALLOW), |
| DRM_IOCTL_DEF_DRV(I915_GEM_SET_DOMAIN, i915_gem_set_domain_ioctl, DRM_RENDER_ALLOW), |
| DRM_IOCTL_DEF_DRV(I915_GEM_SW_FINISH, i915_gem_sw_finish_ioctl, DRM_RENDER_ALLOW), |
| DRM_IOCTL_DEF_DRV(I915_GEM_SET_TILING, i915_gem_set_tiling, DRM_RENDER_ALLOW), |
| DRM_IOCTL_DEF_DRV(I915_GEM_GET_TILING, i915_gem_get_tiling, DRM_RENDER_ALLOW), |
| DRM_IOCTL_DEF_DRV(I915_GEM_GET_APERTURE, i915_gem_get_aperture_ioctl, DRM_RENDER_ALLOW), |
| DRM_IOCTL_DEF_DRV(I915_GET_PIPE_FROM_CRTC_ID, intel_get_pipe_from_crtc_id, 0), |
| DRM_IOCTL_DEF_DRV(I915_GEM_MADVISE, i915_gem_madvise_ioctl, DRM_RENDER_ALLOW), |
| DRM_IOCTL_DEF_DRV(I915_OVERLAY_PUT_IMAGE, intel_overlay_put_image, DRM_MASTER|DRM_CONTROL_ALLOW), |
| DRM_IOCTL_DEF_DRV(I915_OVERLAY_ATTRS, intel_overlay_attrs, DRM_MASTER|DRM_CONTROL_ALLOW), |
| DRM_IOCTL_DEF_DRV(I915_SET_SPRITE_COLORKEY, intel_sprite_set_colorkey, DRM_MASTER|DRM_CONTROL_ALLOW), |
| DRM_IOCTL_DEF_DRV(I915_GET_SPRITE_COLORKEY, drm_noop, DRM_MASTER|DRM_CONTROL_ALLOW), |
| DRM_IOCTL_DEF_DRV(I915_GEM_WAIT, i915_gem_wait_ioctl, DRM_AUTH|DRM_RENDER_ALLOW), |
| DRM_IOCTL_DEF_DRV(I915_GEM_CONTEXT_CREATE, i915_gem_context_create_ioctl, DRM_RENDER_ALLOW), |
| DRM_IOCTL_DEF_DRV(I915_GEM_CONTEXT_DESTROY, i915_gem_context_destroy_ioctl, DRM_RENDER_ALLOW), |
| DRM_IOCTL_DEF_DRV(I915_REG_READ, i915_reg_read_ioctl, DRM_RENDER_ALLOW), |
| DRM_IOCTL_DEF_DRV(I915_GET_RESET_STATS, i915_get_reset_stats_ioctl, DRM_RENDER_ALLOW), |
| DRM_IOCTL_DEF_DRV(I915_GEM_USERPTR, i915_gem_userptr_ioctl, DRM_RENDER_ALLOW), |
| DRM_IOCTL_DEF_DRV(I915_GEM_CONTEXT_GETPARAM, i915_gem_context_getparam_ioctl, DRM_RENDER_ALLOW), |
| DRM_IOCTL_DEF_DRV(I915_GEM_CONTEXT_SETPARAM, i915_gem_context_setparam_ioctl, DRM_RENDER_ALLOW), |
| }; |
| |
| int i915_max_ioctl = ARRAY_SIZE(i915_ioctls); |