diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/nouveau_drm.c')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nouveau_drm.c | 1426 |
1 files changed, 1426 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nouveau_drm.c b/drivers/gpu/drm/nouveau/nouveau_drm.c new file mode 100644 index 000000000..28062d682 --- /dev/null +++ b/drivers/gpu/drm/nouveau/nouveau_drm.c @@ -0,0 +1,1426 @@ +/* + * Copyright 2012 Red Hat Inc. + * + * 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 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 COPYRIGHT HOLDER(S) OR AUTHOR(S) 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: Ben Skeggs + */ + +#include <linux/delay.h> +#include <linux/module.h> +#include <linux/pci.h> +#include <linux/pm_runtime.h> +#include <linux/vga_switcheroo.h> +#include <linux/mmu_notifier.h> +#include <linux/dynamic_debug.h> + +#include <drm/drm_aperture.h> +#include <drm/drm_crtc_helper.h> +#include <drm/drm_drv.h> +#include <drm/drm_gem_ttm_helper.h> +#include <drm/drm_ioctl.h> +#include <drm/drm_vblank.h> + +#include <core/gpuobj.h> +#include <core/option.h> +#include <core/pci.h> +#include <core/tegra.h> + +#include <nvif/driver.h> +#include <nvif/fifo.h> +#include <nvif/push006c.h> +#include <nvif/user.h> + +#include <nvif/class.h> +#include <nvif/cl0002.h> +#include <nvif/cla06f.h> + +#include "nouveau_drv.h" +#include "nouveau_dma.h" +#include "nouveau_ttm.h" +#include "nouveau_gem.h" +#include "nouveau_vga.h" +#include "nouveau_led.h" +#include "nouveau_hwmon.h" +#include "nouveau_acpi.h" +#include "nouveau_bios.h" +#include "nouveau_ioctl.h" +#include "nouveau_abi16.h" +#include "nouveau_fbcon.h" +#include "nouveau_fence.h" +#include "nouveau_debugfs.h" +#include "nouveau_usif.h" +#include "nouveau_connector.h" +#include "nouveau_platform.h" +#include "nouveau_svm.h" +#include "nouveau_dmem.h" + +DECLARE_DYNDBG_CLASSMAP(drm_debug_classes, DD_CLASS_TYPE_DISJOINT_BITS, 0, + "DRM_UT_CORE", + "DRM_UT_DRIVER", + "DRM_UT_KMS", + "DRM_UT_PRIME", + "DRM_UT_ATOMIC", + "DRM_UT_VBL", + "DRM_UT_STATE", + "DRM_UT_LEASE", + "DRM_UT_DP", + "DRM_UT_DRMRES"); + +MODULE_PARM_DESC(config, "option string to pass to driver core"); +static char *nouveau_config; +module_param_named(config, nouveau_config, charp, 0400); + +MODULE_PARM_DESC(debug, "debug string to pass to driver core"); +static char *nouveau_debug; +module_param_named(debug, nouveau_debug, charp, 0400); + +MODULE_PARM_DESC(noaccel, "disable kernel/abi16 acceleration"); +static int nouveau_noaccel = 0; +module_param_named(noaccel, nouveau_noaccel, int, 0400); + +MODULE_PARM_DESC(modeset, "enable driver (default: auto, " + "0 = disabled, 1 = enabled, 2 = headless)"); +int nouveau_modeset = -1; +module_param_named(modeset, nouveau_modeset, int, 0400); + +MODULE_PARM_DESC(atomic, "Expose atomic ioctl (default: disabled)"); +static int nouveau_atomic = 0; +module_param_named(atomic, nouveau_atomic, int, 0400); + +MODULE_PARM_DESC(runpm, "disable (0), force enable (1), optimus only default (-1)"); +static int nouveau_runtime_pm = -1; +module_param_named(runpm, nouveau_runtime_pm, int, 0400); + +static struct drm_driver driver_stub; +static struct drm_driver driver_pci; +static struct drm_driver driver_platform; + +static u64 +nouveau_pci_name(struct pci_dev *pdev) +{ + u64 name = (u64)pci_domain_nr(pdev->bus) << 32; + name |= pdev->bus->number << 16; + name |= PCI_SLOT(pdev->devfn) << 8; + return name | PCI_FUNC(pdev->devfn); +} + +static u64 +nouveau_platform_name(struct platform_device *platformdev) +{ + return platformdev->id; +} + +static u64 +nouveau_name(struct drm_device *dev) +{ + if (dev_is_pci(dev->dev)) + return nouveau_pci_name(to_pci_dev(dev->dev)); + else + return nouveau_platform_name(to_platform_device(dev->dev)); +} + +static inline bool +nouveau_cli_work_ready(struct dma_fence *fence) +{ + bool ret = true; + + spin_lock_irq(fence->lock); + if (!dma_fence_is_signaled_locked(fence)) + ret = false; + spin_unlock_irq(fence->lock); + + if (ret == true) + dma_fence_put(fence); + return ret; +} + +static void +nouveau_cli_work(struct work_struct *w) +{ + struct nouveau_cli *cli = container_of(w, typeof(*cli), work); + struct nouveau_cli_work *work, *wtmp; + mutex_lock(&cli->lock); + list_for_each_entry_safe(work, wtmp, &cli->worker, head) { + if (!work->fence || nouveau_cli_work_ready(work->fence)) { + list_del(&work->head); + work->func(work); + } + } + mutex_unlock(&cli->lock); +} + +static void +nouveau_cli_work_fence(struct dma_fence *fence, struct dma_fence_cb *cb) +{ + struct nouveau_cli_work *work = container_of(cb, typeof(*work), cb); + schedule_work(&work->cli->work); +} + +void +nouveau_cli_work_queue(struct nouveau_cli *cli, struct dma_fence *fence, + struct nouveau_cli_work *work) +{ + work->fence = dma_fence_get(fence); + work->cli = cli; + mutex_lock(&cli->lock); + list_add_tail(&work->head, &cli->worker); + if (dma_fence_add_callback(fence, &work->cb, nouveau_cli_work_fence)) + nouveau_cli_work_fence(fence, &work->cb); + mutex_unlock(&cli->lock); +} + +static void +nouveau_cli_fini(struct nouveau_cli *cli) +{ + /* All our channels are dead now, which means all the fences they + * own are signalled, and all callback functions have been called. + * + * So, after flushing the workqueue, there should be nothing left. + */ + flush_work(&cli->work); + WARN_ON(!list_empty(&cli->worker)); + + usif_client_fini(cli); + nouveau_vmm_fini(&cli->svm); + nouveau_vmm_fini(&cli->vmm); + nvif_mmu_dtor(&cli->mmu); + nvif_device_dtor(&cli->device); + mutex_lock(&cli->drm->master.lock); + nvif_client_dtor(&cli->base); + mutex_unlock(&cli->drm->master.lock); +} + +static int +nouveau_cli_init(struct nouveau_drm *drm, const char *sname, + struct nouveau_cli *cli) +{ + static const struct nvif_mclass + mems[] = { + { NVIF_CLASS_MEM_GF100, -1 }, + { NVIF_CLASS_MEM_NV50 , -1 }, + { NVIF_CLASS_MEM_NV04 , -1 }, + {} + }; + static const struct nvif_mclass + mmus[] = { + { NVIF_CLASS_MMU_GF100, -1 }, + { NVIF_CLASS_MMU_NV50 , -1 }, + { NVIF_CLASS_MMU_NV04 , -1 }, + {} + }; + static const struct nvif_mclass + vmms[] = { + { NVIF_CLASS_VMM_GP100, -1 }, + { NVIF_CLASS_VMM_GM200, -1 }, + { NVIF_CLASS_VMM_GF100, -1 }, + { NVIF_CLASS_VMM_NV50 , -1 }, + { NVIF_CLASS_VMM_NV04 , -1 }, + {} + }; + u64 device = nouveau_name(drm->dev); + int ret; + + snprintf(cli->name, sizeof(cli->name), "%s", sname); + cli->drm = drm; + mutex_init(&cli->mutex); + usif_client_init(cli); + + INIT_WORK(&cli->work, nouveau_cli_work); + INIT_LIST_HEAD(&cli->worker); + mutex_init(&cli->lock); + + if (cli == &drm->master) { + ret = nvif_driver_init(NULL, nouveau_config, nouveau_debug, + cli->name, device, &cli->base); + } else { + mutex_lock(&drm->master.lock); + ret = nvif_client_ctor(&drm->master.base, cli->name, device, + &cli->base); + mutex_unlock(&drm->master.lock); + } + if (ret) { + NV_PRINTK(err, cli, "Client allocation failed: %d\n", ret); + goto done; + } + + ret = nvif_device_ctor(&cli->base.object, "drmDevice", 0, NV_DEVICE, + &(struct nv_device_v0) { + .device = ~0, + .priv = true, + }, sizeof(struct nv_device_v0), + &cli->device); + if (ret) { + NV_PRINTK(err, cli, "Device allocation failed: %d\n", ret); + goto done; + } + + ret = nvif_mclass(&cli->device.object, mmus); + if (ret < 0) { + NV_PRINTK(err, cli, "No supported MMU class\n"); + goto done; + } + + ret = nvif_mmu_ctor(&cli->device.object, "drmMmu", mmus[ret].oclass, + &cli->mmu); + if (ret) { + NV_PRINTK(err, cli, "MMU allocation failed: %d\n", ret); + goto done; + } + + ret = nvif_mclass(&cli->mmu.object, vmms); + if (ret < 0) { + NV_PRINTK(err, cli, "No supported VMM class\n"); + goto done; + } + + ret = nouveau_vmm_init(cli, vmms[ret].oclass, &cli->vmm); + if (ret) { + NV_PRINTK(err, cli, "VMM allocation failed: %d\n", ret); + goto done; + } + + ret = nvif_mclass(&cli->mmu.object, mems); + if (ret < 0) { + NV_PRINTK(err, cli, "No supported MEM class\n"); + goto done; + } + + cli->mem = &mems[ret]; + return 0; +done: + if (ret) + nouveau_cli_fini(cli); + return ret; +} + +static void +nouveau_accel_ce_fini(struct nouveau_drm *drm) +{ + nouveau_channel_idle(drm->cechan); + nvif_object_dtor(&drm->ttm.copy); + nouveau_channel_del(&drm->cechan); +} + +static void +nouveau_accel_ce_init(struct nouveau_drm *drm) +{ + struct nvif_device *device = &drm->client.device; + int ret = 0; + + /* Allocate channel that has access to a (preferably async) copy + * engine, to use for TTM buffer moves. + */ + if (device->info.family >= NV_DEVICE_INFO_V0_KEPLER) { + ret = nouveau_channel_new(drm, device, + nvif_fifo_runlist_ce(device), 0, + true, &drm->cechan); + } else + if (device->info.chipset >= 0xa3 && + device->info.chipset != 0xaa && + device->info.chipset != 0xac) { + /* Prior to Kepler, there's only a single runlist, so all + * engines can be accessed from any channel. + * + * We still want to use a separate channel though. + */ + ret = nouveau_channel_new(drm, device, NvDmaFB, NvDmaTT, false, + &drm->cechan); + } + + if (ret) + NV_ERROR(drm, "failed to create ce channel, %d\n", ret); +} + +static void +nouveau_accel_gr_fini(struct nouveau_drm *drm) +{ + nouveau_channel_idle(drm->channel); + nvif_object_dtor(&drm->ntfy); + nvkm_gpuobj_del(&drm->notify); + nouveau_channel_del(&drm->channel); +} + +static void +nouveau_accel_gr_init(struct nouveau_drm *drm) +{ + struct nvif_device *device = &drm->client.device; + u32 arg0, arg1; + int ret; + + if (device->info.family >= NV_DEVICE_INFO_V0_AMPERE) + return; + + /* Allocate channel that has access to the graphics engine. */ + if (device->info.family >= NV_DEVICE_INFO_V0_KEPLER) { + arg0 = nvif_fifo_runlist(device, NV_DEVICE_HOST_RUNLIST_ENGINES_GR); + arg1 = 1; + } else { + arg0 = NvDmaFB; + arg1 = NvDmaTT; + } + + ret = nouveau_channel_new(drm, device, arg0, arg1, false, + &drm->channel); + if (ret) { + NV_ERROR(drm, "failed to create kernel channel, %d\n", ret); + nouveau_accel_gr_fini(drm); + return; + } + + /* A SW class is used on pre-NV50 HW to assist with handling the + * synchronisation of page flips, as well as to implement fences + * on TNT/TNT2 HW that lacks any kind of support in host. + */ + if (!drm->channel->nvsw.client && device->info.family < NV_DEVICE_INFO_V0_TESLA) { + ret = nvif_object_ctor(&drm->channel->user, "drmNvsw", + NVDRM_NVSW, nouveau_abi16_swclass(drm), + NULL, 0, &drm->channel->nvsw); + if (ret == 0) { + struct nvif_push *push = drm->channel->chan.push; + ret = PUSH_WAIT(push, 2); + if (ret == 0) + PUSH_NVSQ(push, NV_SW, 0x0000, drm->channel->nvsw.handle); + } + + if (ret) { + NV_ERROR(drm, "failed to allocate sw class, %d\n", ret); + nouveau_accel_gr_fini(drm); + return; + } + } + + /* NvMemoryToMemoryFormat requires a notifier ctxdma for some reason, + * even if notification is never requested, so, allocate a ctxdma on + * any GPU where it's possible we'll end up using M2MF for BO moves. + */ + if (device->info.family < NV_DEVICE_INFO_V0_FERMI) { + ret = nvkm_gpuobj_new(nvxx_device(device), 32, 0, false, NULL, + &drm->notify); + if (ret) { + NV_ERROR(drm, "failed to allocate notifier, %d\n", ret); + nouveau_accel_gr_fini(drm); + return; + } + + ret = nvif_object_ctor(&drm->channel->user, "drmM2mfNtfy", + NvNotify0, NV_DMA_IN_MEMORY, + &(struct nv_dma_v0) { + .target = NV_DMA_V0_TARGET_VRAM, + .access = NV_DMA_V0_ACCESS_RDWR, + .start = drm->notify->addr, + .limit = drm->notify->addr + 31 + }, sizeof(struct nv_dma_v0), + &drm->ntfy); + if (ret) { + nouveau_accel_gr_fini(drm); + return; + } + } +} + +static void +nouveau_accel_fini(struct nouveau_drm *drm) +{ + nouveau_accel_ce_fini(drm); + nouveau_accel_gr_fini(drm); + if (drm->fence) + nouveau_fence(drm)->dtor(drm); +} + +static void +nouveau_accel_init(struct nouveau_drm *drm) +{ + struct nvif_device *device = &drm->client.device; + struct nvif_sclass *sclass; + int ret, i, n; + + if (nouveau_noaccel) + return; + + /* Initialise global support for channels, and synchronisation. */ + ret = nouveau_channels_init(drm); + if (ret) + return; + + /*XXX: this is crap, but the fence/channel stuff is a little + * backwards in some places. this will be fixed. + */ + ret = n = nvif_object_sclass_get(&device->object, &sclass); + if (ret < 0) + return; + + for (ret = -ENOSYS, i = 0; i < n; i++) { + switch (sclass[i].oclass) { + case NV03_CHANNEL_DMA: + ret = nv04_fence_create(drm); + break; + case NV10_CHANNEL_DMA: + ret = nv10_fence_create(drm); + break; + case NV17_CHANNEL_DMA: + case NV40_CHANNEL_DMA: + ret = nv17_fence_create(drm); + break; + case NV50_CHANNEL_GPFIFO: + ret = nv50_fence_create(drm); + break; + case G82_CHANNEL_GPFIFO: + ret = nv84_fence_create(drm); + break; + case FERMI_CHANNEL_GPFIFO: + case KEPLER_CHANNEL_GPFIFO_A: + case KEPLER_CHANNEL_GPFIFO_B: + case MAXWELL_CHANNEL_GPFIFO_A: + case PASCAL_CHANNEL_GPFIFO_A: + case VOLTA_CHANNEL_GPFIFO_A: + case TURING_CHANNEL_GPFIFO_A: + case AMPERE_CHANNEL_GPFIFO_B: + ret = nvc0_fence_create(drm); + break; + default: + break; + } + } + + nvif_object_sclass_put(&sclass); + if (ret) { + NV_ERROR(drm, "failed to initialise sync subsystem, %d\n", ret); + nouveau_accel_fini(drm); + return; + } + + /* Volta requires access to a doorbell register for kickoff. */ + if (drm->client.device.info.family >= NV_DEVICE_INFO_V0_VOLTA) { + ret = nvif_user_ctor(device, "drmUsermode"); + if (ret) + return; + } + + /* Allocate channels we need to support various functions. */ + nouveau_accel_gr_init(drm); + nouveau_accel_ce_init(drm); + + /* Initialise accelerated TTM buffer moves. */ + nouveau_bo_move_init(drm); +} + +static void __printf(2, 3) +nouveau_drm_errorf(struct nvif_object *object, const char *fmt, ...) +{ + struct nouveau_drm *drm = container_of(object->parent, typeof(*drm), parent); + struct va_format vaf; + va_list va; + + va_start(va, fmt); + vaf.fmt = fmt; + vaf.va = &va; + NV_ERROR(drm, "%pV", &vaf); + va_end(va); +} + +static void __printf(2, 3) +nouveau_drm_debugf(struct nvif_object *object, const char *fmt, ...) +{ + struct nouveau_drm *drm = container_of(object->parent, typeof(*drm), parent); + struct va_format vaf; + va_list va; + + va_start(va, fmt); + vaf.fmt = fmt; + vaf.va = &va; + NV_DEBUG(drm, "%pV", &vaf); + va_end(va); +} + +static const struct nvif_parent_func +nouveau_parent = { + .debugf = nouveau_drm_debugf, + .errorf = nouveau_drm_errorf, +}; + +static int +nouveau_drm_device_init(struct drm_device *dev) +{ + struct nouveau_drm *drm; + int ret; + + if (!(drm = kzalloc(sizeof(*drm), GFP_KERNEL))) + return -ENOMEM; + dev->dev_private = drm; + drm->dev = dev; + + nvif_parent_ctor(&nouveau_parent, &drm->parent); + drm->master.base.object.parent = &drm->parent; + + ret = nouveau_cli_init(drm, "DRM-master", &drm->master); + if (ret) + goto fail_alloc; + + ret = nouveau_cli_init(drm, "DRM", &drm->client); + if (ret) + goto fail_master; + + nvxx_client(&drm->client.base)->debug = + nvkm_dbgopt(nouveau_debug, "DRM"); + + INIT_LIST_HEAD(&drm->clients); + mutex_init(&drm->clients_lock); + spin_lock_init(&drm->tile.lock); + + /* workaround an odd issue on nvc1 by disabling the device's + * nosnoop capability. hopefully won't cause issues until a + * better fix is found - assuming there is one... + */ + if (drm->client.device.info.chipset == 0xc1) + nvif_mask(&drm->client.device.object, 0x00088080, 0x00000800, 0x00000000); + + nouveau_vga_init(drm); + + ret = nouveau_ttm_init(drm); + if (ret) + goto fail_ttm; + + ret = nouveau_bios_init(dev); + if (ret) + goto fail_bios; + + nouveau_accel_init(drm); + + ret = nouveau_display_create(dev); + if (ret) + goto fail_dispctor; + + if (dev->mode_config.num_crtc) { + ret = nouveau_display_init(dev, false, false); + if (ret) + goto fail_dispinit; + } + + nouveau_debugfs_init(drm); + nouveau_hwmon_init(dev); + nouveau_svm_init(drm); + nouveau_dmem_init(drm); + nouveau_fbcon_init(dev); + nouveau_led_init(dev); + + if (nouveau_pmops_runtime()) { + pm_runtime_use_autosuspend(dev->dev); + pm_runtime_set_autosuspend_delay(dev->dev, 5000); + pm_runtime_set_active(dev->dev); + pm_runtime_allow(dev->dev); + pm_runtime_mark_last_busy(dev->dev); + pm_runtime_put(dev->dev); + } + + return 0; + +fail_dispinit: + nouveau_display_destroy(dev); +fail_dispctor: + nouveau_accel_fini(drm); + nouveau_bios_takedown(dev); +fail_bios: + nouveau_ttm_fini(drm); +fail_ttm: + nouveau_vga_fini(drm); + nouveau_cli_fini(&drm->client); +fail_master: + nouveau_cli_fini(&drm->master); +fail_alloc: + nvif_parent_dtor(&drm->parent); + kfree(drm); + return ret; +} + +static void +nouveau_drm_device_fini(struct drm_device *dev) +{ + struct nouveau_cli *cli, *temp_cli; + struct nouveau_drm *drm = nouveau_drm(dev); + + if (nouveau_pmops_runtime()) { + pm_runtime_get_sync(dev->dev); + pm_runtime_forbid(dev->dev); + } + + nouveau_led_fini(dev); + nouveau_fbcon_fini(dev); + nouveau_dmem_fini(drm); + nouveau_svm_fini(drm); + nouveau_hwmon_fini(dev); + nouveau_debugfs_fini(drm); + + if (dev->mode_config.num_crtc) + nouveau_display_fini(dev, false, false); + nouveau_display_destroy(dev); + + nouveau_accel_fini(drm); + nouveau_bios_takedown(dev); + + nouveau_ttm_fini(drm); + nouveau_vga_fini(drm); + + /* + * There may be existing clients from as-yet unclosed files. For now, + * clean them up here rather than deferring until the file is closed, + * but this likely not correct if we want to support hot-unplugging + * properly. + */ + mutex_lock(&drm->clients_lock); + list_for_each_entry_safe(cli, temp_cli, &drm->clients, head) { + list_del(&cli->head); + mutex_lock(&cli->mutex); + if (cli->abi16) + nouveau_abi16_fini(cli->abi16); + mutex_unlock(&cli->mutex); + nouveau_cli_fini(cli); + kfree(cli); + } + mutex_unlock(&drm->clients_lock); + + nouveau_cli_fini(&drm->client); + nouveau_cli_fini(&drm->master); + nvif_parent_dtor(&drm->parent); + mutex_destroy(&drm->clients_lock); + kfree(drm); +} + +/* + * On some Intel PCIe bridge controllers doing a + * D0 -> D3hot -> D3cold -> D0 sequence causes Nvidia GPUs to not reappear. + * Skipping the intermediate D3hot step seems to make it work again. This is + * probably caused by not meeting the expectation the involved AML code has + * when the GPU is put into D3hot state before invoking it. + * + * This leads to various manifestations of this issue: + * - AML code execution to power on the GPU hits an infinite loop (as the + * code waits on device memory to change). + * - kernel crashes, as all PCI reads return -1, which most code isn't able + * to handle well enough. + * + * In all cases dmesg will contain at least one line like this: + * 'nouveau 0000:01:00.0: Refused to change power state, currently in D3' + * followed by a lot of nouveau timeouts. + * + * In the \_SB.PCI0.PEG0.PG00._OFF code deeper down writes bit 0x80 to the not + * documented PCI config space register 0x248 of the Intel PCIe bridge + * controller (0x1901) in order to change the state of the PCIe link between + * the PCIe port and the GPU. There are alternative code paths using other + * registers, which seem to work fine (executed pre Windows 8): + * - 0xbc bit 0x20 (publicly available documentation claims 'reserved') + * - 0xb0 bit 0x10 (link disable) + * Changing the conditions inside the firmware by poking into the relevant + * addresses does resolve the issue, but it seemed to be ACPI private memory + * and not any device accessible memory at all, so there is no portable way of + * changing the conditions. + * On a XPS 9560 that means bits [0,3] on \CPEX need to be cleared. + * + * The only systems where this behavior can be seen are hybrid graphics laptops + * with a secondary Nvidia Maxwell, Pascal or Turing GPU. It's unclear whether + * this issue only occurs in combination with listed Intel PCIe bridge + * controllers and the mentioned GPUs or other devices as well. + * + * documentation on the PCIe bridge controller can be found in the + * "7th Generation Intel® Processor Families for H Platforms Datasheet Volume 2" + * Section "12 PCI Express* Controller (x16) Registers" + */ + +static void quirk_broken_nv_runpm(struct pci_dev *pdev) +{ + struct drm_device *dev = pci_get_drvdata(pdev); + struct nouveau_drm *drm = nouveau_drm(dev); + struct pci_dev *bridge = pci_upstream_bridge(pdev); + + if (!bridge || bridge->vendor != PCI_VENDOR_ID_INTEL) + return; + + switch (bridge->device) { + case 0x1901: + drm->old_pm_cap = pdev->pm_cap; + pdev->pm_cap = 0; + NV_INFO(drm, "Disabling PCI power management to avoid bug\n"); + break; + } +} + +static int nouveau_drm_probe(struct pci_dev *pdev, + const struct pci_device_id *pent) +{ + struct nvkm_device *device; + struct drm_device *drm_dev; + int ret; + + if (vga_switcheroo_client_probe_defer(pdev)) + return -EPROBE_DEFER; + + /* We need to check that the chipset is supported before booting + * fbdev off the hardware, as there's no way to put it back. + */ + ret = nvkm_device_pci_new(pdev, nouveau_config, "error", + true, false, 0, &device); + if (ret) + return ret; + + nvkm_device_del(&device); + + /* Remove conflicting drivers (vesafb, efifb etc). */ + ret = drm_aperture_remove_conflicting_pci_framebuffers(pdev, &driver_pci); + if (ret) + return ret; + + ret = nvkm_device_pci_new(pdev, nouveau_config, nouveau_debug, + true, true, ~0ULL, &device); + if (ret) + return ret; + + pci_set_master(pdev); + + if (nouveau_atomic) + driver_pci.driver_features |= DRIVER_ATOMIC; + + drm_dev = drm_dev_alloc(&driver_pci, &pdev->dev); + if (IS_ERR(drm_dev)) { + ret = PTR_ERR(drm_dev); + goto fail_nvkm; + } + + ret = pci_enable_device(pdev); + if (ret) + goto fail_drm; + + pci_set_drvdata(pdev, drm_dev); + + ret = nouveau_drm_device_init(drm_dev); + if (ret) + goto fail_pci; + + ret = drm_dev_register(drm_dev, pent->driver_data); + if (ret) + goto fail_drm_dev_init; + + quirk_broken_nv_runpm(pdev); + return 0; + +fail_drm_dev_init: + nouveau_drm_device_fini(drm_dev); +fail_pci: + pci_disable_device(pdev); +fail_drm: + drm_dev_put(drm_dev); +fail_nvkm: + nvkm_device_del(&device); + return ret; +} + +void +nouveau_drm_device_remove(struct drm_device *dev) +{ + struct nouveau_drm *drm = nouveau_drm(dev); + struct nvkm_client *client; + struct nvkm_device *device; + + drm_dev_unplug(dev); + + client = nvxx_client(&drm->client.base); + device = nvkm_device_find(client->device); + + nouveau_drm_device_fini(dev); + drm_dev_put(dev); + nvkm_device_del(&device); +} + +static void +nouveau_drm_remove(struct pci_dev *pdev) +{ + struct drm_device *dev = pci_get_drvdata(pdev); + struct nouveau_drm *drm = nouveau_drm(dev); + + /* revert our workaround */ + if (drm->old_pm_cap) + pdev->pm_cap = drm->old_pm_cap; + nouveau_drm_device_remove(dev); + pci_disable_device(pdev); +} + +static int +nouveau_do_suspend(struct drm_device *dev, bool runtime) +{ + struct nouveau_drm *drm = nouveau_drm(dev); + struct ttm_resource_manager *man; + int ret; + + nouveau_svm_suspend(drm); + nouveau_dmem_suspend(drm); + nouveau_led_suspend(dev); + + if (dev->mode_config.num_crtc) { + NV_DEBUG(drm, "suspending console...\n"); + nouveau_fbcon_set_suspend(dev, 1); + NV_DEBUG(drm, "suspending display...\n"); + ret = nouveau_display_suspend(dev, runtime); + if (ret) + return ret; + } + + NV_DEBUG(drm, "evicting buffers...\n"); + + man = ttm_manager_type(&drm->ttm.bdev, TTM_PL_VRAM); + ttm_resource_manager_evict_all(&drm->ttm.bdev, man); + + NV_DEBUG(drm, "waiting for kernel channels to go idle...\n"); + if (drm->cechan) { + ret = nouveau_channel_idle(drm->cechan); + if (ret) + goto fail_display; + } + + if (drm->channel) { + ret = nouveau_channel_idle(drm->channel); + if (ret) + goto fail_display; + } + + NV_DEBUG(drm, "suspending fence...\n"); + if (drm->fence && nouveau_fence(drm)->suspend) { + if (!nouveau_fence(drm)->suspend(drm)) { + ret = -ENOMEM; + goto fail_display; + } + } + + NV_DEBUG(drm, "suspending object tree...\n"); + ret = nvif_client_suspend(&drm->master.base); + if (ret) + goto fail_client; + + return 0; + +fail_client: + if (drm->fence && nouveau_fence(drm)->resume) + nouveau_fence(drm)->resume(drm); + +fail_display: + if (dev->mode_config.num_crtc) { + NV_DEBUG(drm, "resuming display...\n"); + nouveau_display_resume(dev, runtime); + } + return ret; +} + +static int +nouveau_do_resume(struct drm_device *dev, bool runtime) +{ + int ret = 0; + struct nouveau_drm *drm = nouveau_drm(dev); + + NV_DEBUG(drm, "resuming object tree...\n"); + ret = nvif_client_resume(&drm->master.base); + if (ret) { + NV_ERROR(drm, "Client resume failed with error: %d\n", ret); + return ret; + } + + NV_DEBUG(drm, "resuming fence...\n"); + if (drm->fence && nouveau_fence(drm)->resume) + nouveau_fence(drm)->resume(drm); + + nouveau_run_vbios_init(dev); + + if (dev->mode_config.num_crtc) { + NV_DEBUG(drm, "resuming display...\n"); + nouveau_display_resume(dev, runtime); + NV_DEBUG(drm, "resuming console...\n"); + nouveau_fbcon_set_suspend(dev, 0); + } + + nouveau_led_resume(dev); + nouveau_dmem_resume(drm); + nouveau_svm_resume(drm); + return 0; +} + +int +nouveau_pmops_suspend(struct device *dev) +{ + struct pci_dev *pdev = to_pci_dev(dev); + struct drm_device *drm_dev = pci_get_drvdata(pdev); + int ret; + + if (drm_dev->switch_power_state == DRM_SWITCH_POWER_OFF || + drm_dev->switch_power_state == DRM_SWITCH_POWER_DYNAMIC_OFF) + return 0; + + ret = nouveau_do_suspend(drm_dev, false); + if (ret) + return ret; + + pci_save_state(pdev); + pci_disable_device(pdev); + pci_set_power_state(pdev, PCI_D3hot); + udelay(200); + return 0; +} + +int +nouveau_pmops_resume(struct device *dev) +{ + struct pci_dev *pdev = to_pci_dev(dev); + struct drm_device *drm_dev = pci_get_drvdata(pdev); + int ret; + + if (drm_dev->switch_power_state == DRM_SWITCH_POWER_OFF || + drm_dev->switch_power_state == DRM_SWITCH_POWER_DYNAMIC_OFF) + return 0; + + pci_set_power_state(pdev, PCI_D0); + pci_restore_state(pdev); + ret = pci_enable_device(pdev); + if (ret) + return ret; + pci_set_master(pdev); + + ret = nouveau_do_resume(drm_dev, false); + + /* Monitors may have been connected / disconnected during suspend */ + nouveau_display_hpd_resume(drm_dev); + + return ret; +} + +static int +nouveau_pmops_freeze(struct device *dev) +{ + struct pci_dev *pdev = to_pci_dev(dev); + struct drm_device *drm_dev = pci_get_drvdata(pdev); + return nouveau_do_suspend(drm_dev, false); +} + +static int +nouveau_pmops_thaw(struct device *dev) +{ + struct pci_dev *pdev = to_pci_dev(dev); + struct drm_device *drm_dev = pci_get_drvdata(pdev); + return nouveau_do_resume(drm_dev, false); +} + +bool +nouveau_pmops_runtime(void) +{ + if (nouveau_runtime_pm == -1) + return nouveau_is_optimus() || nouveau_is_v1_dsm(); + return nouveau_runtime_pm == 1; +} + +static int +nouveau_pmops_runtime_suspend(struct device *dev) +{ + struct pci_dev *pdev = to_pci_dev(dev); + struct drm_device *drm_dev = pci_get_drvdata(pdev); + int ret; + + if (!nouveau_pmops_runtime()) { + pm_runtime_forbid(dev); + return -EBUSY; + } + + nouveau_switcheroo_optimus_dsm(); + ret = nouveau_do_suspend(drm_dev, true); + pci_save_state(pdev); + pci_disable_device(pdev); + pci_ignore_hotplug(pdev); + pci_set_power_state(pdev, PCI_D3cold); + drm_dev->switch_power_state = DRM_SWITCH_POWER_DYNAMIC_OFF; + return ret; +} + +static int +nouveau_pmops_runtime_resume(struct device *dev) +{ + struct pci_dev *pdev = to_pci_dev(dev); + struct drm_device *drm_dev = pci_get_drvdata(pdev); + struct nouveau_drm *drm = nouveau_drm(drm_dev); + struct nvif_device *device = &nouveau_drm(drm_dev)->client.device; + int ret; + + if (!nouveau_pmops_runtime()) { + pm_runtime_forbid(dev); + return -EBUSY; + } + + pci_set_power_state(pdev, PCI_D0); + pci_restore_state(pdev); + ret = pci_enable_device(pdev); + if (ret) + return ret; + pci_set_master(pdev); + + ret = nouveau_do_resume(drm_dev, true); + if (ret) { + NV_ERROR(drm, "resume failed with: %d\n", ret); + return ret; + } + + /* do magic */ + nvif_mask(&device->object, 0x088488, (1 << 25), (1 << 25)); + drm_dev->switch_power_state = DRM_SWITCH_POWER_ON; + + /* Monitors may have been connected / disconnected during suspend */ + nouveau_display_hpd_resume(drm_dev); + + return ret; +} + +static int +nouveau_pmops_runtime_idle(struct device *dev) +{ + if (!nouveau_pmops_runtime()) { + pm_runtime_forbid(dev); + return -EBUSY; + } + + pm_runtime_mark_last_busy(dev); + pm_runtime_autosuspend(dev); + /* we don't want the main rpm_idle to call suspend - we want to autosuspend */ + return 1; +} + +static int +nouveau_drm_open(struct drm_device *dev, struct drm_file *fpriv) +{ + struct nouveau_drm *drm = nouveau_drm(dev); + struct nouveau_cli *cli; + char name[32], tmpname[TASK_COMM_LEN]; + int ret; + + /* need to bring up power immediately if opening device */ + ret = pm_runtime_get_sync(dev->dev); + if (ret < 0 && ret != -EACCES) { + pm_runtime_put_autosuspend(dev->dev); + return ret; + } + + get_task_comm(tmpname, current); + snprintf(name, sizeof(name), "%s[%d]", tmpname, pid_nr(fpriv->pid)); + + if (!(cli = kzalloc(sizeof(*cli), GFP_KERNEL))) { + ret = -ENOMEM; + goto done; + } + + ret = nouveau_cli_init(drm, name, cli); + if (ret) + goto done; + + fpriv->driver_priv = cli; + + mutex_lock(&drm->clients_lock); + list_add(&cli->head, &drm->clients); + mutex_unlock(&drm->clients_lock); + +done: + if (ret && cli) { + nouveau_cli_fini(cli); + kfree(cli); + } + + pm_runtime_mark_last_busy(dev->dev); + pm_runtime_put_autosuspend(dev->dev); + return ret; +} + +static void +nouveau_drm_postclose(struct drm_device *dev, struct drm_file *fpriv) +{ + struct nouveau_cli *cli = nouveau_cli(fpriv); + struct nouveau_drm *drm = nouveau_drm(dev); + int dev_index; + + /* + * The device is gone, and as it currently stands all clients are + * cleaned up in the removal codepath. In the future this may change + * so that we can support hot-unplugging, but for now we immediately + * return to avoid a double-free situation. + */ + if (!drm_dev_enter(dev, &dev_index)) + return; + + pm_runtime_get_sync(dev->dev); + + mutex_lock(&cli->mutex); + if (cli->abi16) + nouveau_abi16_fini(cli->abi16); + mutex_unlock(&cli->mutex); + + mutex_lock(&drm->clients_lock); + list_del(&cli->head); + mutex_unlock(&drm->clients_lock); + + nouveau_cli_fini(cli); + kfree(cli); + pm_runtime_mark_last_busy(dev->dev); + pm_runtime_put_autosuspend(dev->dev); + drm_dev_exit(dev_index); +} + +static const struct drm_ioctl_desc +nouveau_ioctls[] = { + DRM_IOCTL_DEF_DRV(NOUVEAU_GETPARAM, nouveau_abi16_ioctl_getparam, DRM_RENDER_ALLOW), + DRM_IOCTL_DEF_DRV(NOUVEAU_SETPARAM, drm_invalid_op, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), + DRM_IOCTL_DEF_DRV(NOUVEAU_CHANNEL_ALLOC, nouveau_abi16_ioctl_channel_alloc, DRM_RENDER_ALLOW), + DRM_IOCTL_DEF_DRV(NOUVEAU_CHANNEL_FREE, nouveau_abi16_ioctl_channel_free, DRM_RENDER_ALLOW), + DRM_IOCTL_DEF_DRV(NOUVEAU_GROBJ_ALLOC, nouveau_abi16_ioctl_grobj_alloc, DRM_RENDER_ALLOW), + DRM_IOCTL_DEF_DRV(NOUVEAU_NOTIFIEROBJ_ALLOC, nouveau_abi16_ioctl_notifierobj_alloc, DRM_RENDER_ALLOW), + DRM_IOCTL_DEF_DRV(NOUVEAU_GPUOBJ_FREE, nouveau_abi16_ioctl_gpuobj_free, DRM_RENDER_ALLOW), + DRM_IOCTL_DEF_DRV(NOUVEAU_SVM_INIT, nouveau_svmm_init, DRM_RENDER_ALLOW), + DRM_IOCTL_DEF_DRV(NOUVEAU_SVM_BIND, nouveau_svmm_bind, DRM_RENDER_ALLOW), + DRM_IOCTL_DEF_DRV(NOUVEAU_GEM_NEW, nouveau_gem_ioctl_new, DRM_RENDER_ALLOW), + DRM_IOCTL_DEF_DRV(NOUVEAU_GEM_PUSHBUF, nouveau_gem_ioctl_pushbuf, DRM_RENDER_ALLOW), + DRM_IOCTL_DEF_DRV(NOUVEAU_GEM_CPU_PREP, nouveau_gem_ioctl_cpu_prep, DRM_RENDER_ALLOW), + DRM_IOCTL_DEF_DRV(NOUVEAU_GEM_CPU_FINI, nouveau_gem_ioctl_cpu_fini, DRM_RENDER_ALLOW), + DRM_IOCTL_DEF_DRV(NOUVEAU_GEM_INFO, nouveau_gem_ioctl_info, DRM_RENDER_ALLOW), +}; + +long +nouveau_drm_ioctl(struct file *file, unsigned int cmd, unsigned long arg) +{ + struct drm_file *filp = file->private_data; + struct drm_device *dev = filp->minor->dev; + long ret; + + ret = pm_runtime_get_sync(dev->dev); + if (ret < 0 && ret != -EACCES) { + pm_runtime_put_autosuspend(dev->dev); + return ret; + } + + switch (_IOC_NR(cmd) - DRM_COMMAND_BASE) { + case DRM_NOUVEAU_NVIF: + ret = usif_ioctl(filp, (void __user *)arg, _IOC_SIZE(cmd)); + break; + default: + ret = drm_ioctl(file, cmd, arg); + break; + } + + pm_runtime_mark_last_busy(dev->dev); + pm_runtime_put_autosuspend(dev->dev); + return ret; +} + +static const struct file_operations +nouveau_driver_fops = { + .owner = THIS_MODULE, + .open = drm_open, + .release = drm_release, + .unlocked_ioctl = nouveau_drm_ioctl, + .mmap = drm_gem_mmap, + .poll = drm_poll, + .read = drm_read, +#if defined(CONFIG_COMPAT) + .compat_ioctl = nouveau_compat_ioctl, +#endif + .llseek = noop_llseek, +}; + +static struct drm_driver +driver_stub = { + .driver_features = + DRIVER_GEM | DRIVER_MODESET | DRIVER_RENDER +#if defined(CONFIG_NOUVEAU_LEGACY_CTX_SUPPORT) + | DRIVER_KMS_LEGACY_CONTEXT +#endif + , + + .open = nouveau_drm_open, + .postclose = nouveau_drm_postclose, + .lastclose = nouveau_vga_lastclose, + +#if defined(CONFIG_DEBUG_FS) + .debugfs_init = nouveau_drm_debugfs_init, +#endif + + .ioctls = nouveau_ioctls, + .num_ioctls = ARRAY_SIZE(nouveau_ioctls), + .fops = &nouveau_driver_fops, + + .prime_handle_to_fd = drm_gem_prime_handle_to_fd, + .prime_fd_to_handle = drm_gem_prime_fd_to_handle, + .gem_prime_import_sg_table = nouveau_gem_prime_import_sg_table, + .gem_prime_mmap = drm_gem_prime_mmap, + + .dumb_create = nouveau_display_dumb_create, + .dumb_map_offset = drm_gem_ttm_dumb_map_offset, + + .name = DRIVER_NAME, + .desc = DRIVER_DESC, +#ifdef GIT_REVISION + .date = GIT_REVISION, +#else + .date = DRIVER_DATE, +#endif + .major = DRIVER_MAJOR, + .minor = DRIVER_MINOR, + .patchlevel = DRIVER_PATCHLEVEL, +}; + +static struct pci_device_id +nouveau_drm_pci_table[] = { + { + PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID), + .class = PCI_BASE_CLASS_DISPLAY << 16, + .class_mask = 0xff << 16, + }, + { + PCI_DEVICE(PCI_VENDOR_ID_NVIDIA_SGS, PCI_ANY_ID), + .class = PCI_BASE_CLASS_DISPLAY << 16, + .class_mask = 0xff << 16, + }, + {} +}; + +static void nouveau_display_options(void) +{ + DRM_DEBUG_DRIVER("Loading Nouveau with parameters:\n"); + + DRM_DEBUG_DRIVER("... tv_disable : %d\n", nouveau_tv_disable); + DRM_DEBUG_DRIVER("... ignorelid : %d\n", nouveau_ignorelid); + DRM_DEBUG_DRIVER("... duallink : %d\n", nouveau_duallink); + DRM_DEBUG_DRIVER("... nofbaccel : %d\n", nouveau_nofbaccel); + DRM_DEBUG_DRIVER("... config : %s\n", nouveau_config); + DRM_DEBUG_DRIVER("... debug : %s\n", nouveau_debug); + DRM_DEBUG_DRIVER("... noaccel : %d\n", nouveau_noaccel); + DRM_DEBUG_DRIVER("... modeset : %d\n", nouveau_modeset); + DRM_DEBUG_DRIVER("... runpm : %d\n", nouveau_runtime_pm); + DRM_DEBUG_DRIVER("... vram_pushbuf : %d\n", nouveau_vram_pushbuf); + DRM_DEBUG_DRIVER("... hdmimhz : %d\n", nouveau_hdmimhz); +} + +static const struct dev_pm_ops nouveau_pm_ops = { + .suspend = nouveau_pmops_suspend, + .resume = nouveau_pmops_resume, + .freeze = nouveau_pmops_freeze, + .thaw = nouveau_pmops_thaw, + .poweroff = nouveau_pmops_freeze, + .restore = nouveau_pmops_resume, + .runtime_suspend = nouveau_pmops_runtime_suspend, + .runtime_resume = nouveau_pmops_runtime_resume, + .runtime_idle = nouveau_pmops_runtime_idle, +}; + +static struct pci_driver +nouveau_drm_pci_driver = { + .name = "nouveau", + .id_table = nouveau_drm_pci_table, + .probe = nouveau_drm_probe, + .remove = nouveau_drm_remove, + .driver.pm = &nouveau_pm_ops, +}; + +struct drm_device * +nouveau_platform_device_create(const struct nvkm_device_tegra_func *func, + struct platform_device *pdev, + struct nvkm_device **pdevice) +{ + struct drm_device *drm; + int err; + + err = nvkm_device_tegra_new(func, pdev, nouveau_config, nouveau_debug, + true, true, ~0ULL, pdevice); + if (err) + goto err_free; + + drm = drm_dev_alloc(&driver_platform, &pdev->dev); + if (IS_ERR(drm)) { + err = PTR_ERR(drm); + goto err_free; + } + + err = nouveau_drm_device_init(drm); + if (err) + goto err_put; + + platform_set_drvdata(pdev, drm); + + return drm; + +err_put: + drm_dev_put(drm); +err_free: + nvkm_device_del(pdevice); + + return ERR_PTR(err); +} + +static int __init +nouveau_drm_init(void) +{ + driver_pci = driver_stub; + driver_platform = driver_stub; + + nouveau_display_options(); + + if (nouveau_modeset == -1) { + if (drm_firmware_drivers_only()) + nouveau_modeset = 0; + } + + if (!nouveau_modeset) + return 0; + +#ifdef CONFIG_NOUVEAU_PLATFORM_DRIVER + platform_driver_register(&nouveau_platform_driver); +#endif + + nouveau_register_dsm_handler(); + nouveau_backlight_ctor(); + +#ifdef CONFIG_PCI + return pci_register_driver(&nouveau_drm_pci_driver); +#else + return 0; +#endif +} + +static void __exit +nouveau_drm_exit(void) +{ + if (!nouveau_modeset) + return; + +#ifdef CONFIG_PCI + pci_unregister_driver(&nouveau_drm_pci_driver); +#endif + nouveau_backlight_dtor(); + nouveau_unregister_dsm_handler(); + +#ifdef CONFIG_NOUVEAU_PLATFORM_DRIVER + platform_driver_unregister(&nouveau_platform_driver); +#endif + if (IS_ENABLED(CONFIG_DRM_NOUVEAU_SVM)) + mmu_notifier_synchronize(); +} + +module_init(nouveau_drm_init); +module_exit(nouveau_drm_exit); + +MODULE_DEVICE_TABLE(pci, nouveau_drm_pci_table); +MODULE_AUTHOR(DRIVER_AUTHOR); +MODULE_DESCRIPTION(DRIVER_DESC); +MODULE_LICENSE("GPL and additional rights"); |