diff options
Diffstat (limited to 'drivers/gpu/drm/i915/gvt/gvt.c')
| -rw-r--r-- | drivers/gpu/drm/i915/gvt/gvt.c | 172 |
1 files changed, 159 insertions, 13 deletions
diff --git a/drivers/gpu/drm/i915/gvt/gvt.c b/drivers/gpu/drm/i915/gvt/gvt.c index 927f4579f5b6..31b59d40f3fb 100644 --- a/drivers/gpu/drm/i915/gvt/gvt.c +++ b/drivers/gpu/drm/i915/gvt/gvt.c @@ -19,12 +19,23 @@ * 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: + * Kevin Tian <kevin.tian@intel.com> + * Eddie Dong <eddie.dong@intel.com> + * + * Contributors: + * Niu Bing <bing.niu@intel.com> + * Zhi Wang <zhi.a.wang@intel.com> + * */ #include <linux/types.h> #include <xen/xen.h> +#include <linux/kthread.h> #include "i915_drv.h" +#include "gvt.h" struct intel_gvt_host intel_gvt_host; @@ -33,6 +44,13 @@ static const char * const supported_hypervisors[] = { [INTEL_GVT_HYPERVISOR_KVM] = "KVM", }; +struct intel_gvt_io_emulation_ops intel_gvt_io_emulation_ops = { + .emulate_cfg_read = intel_vgpu_emulate_cfg_read, + .emulate_cfg_write = intel_vgpu_emulate_cfg_write, + .emulate_mmio_read = intel_vgpu_emulate_mmio_read, + .emulate_mmio_write = intel_vgpu_emulate_mmio_write, +}; + /** * intel_gvt_init_host - Load MPT modules and detect if we're running in host * @gvt: intel gvt device @@ -84,9 +102,66 @@ int intel_gvt_init_host(void) static void init_device_info(struct intel_gvt *gvt) { - if (IS_BROADWELL(gvt->dev_priv)) - gvt->device_info.max_support_vgpus = 8; - /* This function will grow large in GVT device model patches. */ + struct intel_gvt_device_info *info = &gvt->device_info; + + if (IS_BROADWELL(gvt->dev_priv) || IS_SKYLAKE(gvt->dev_priv)) { + info->max_support_vgpus = 8; + info->cfg_space_size = 256; + info->mmio_size = 2 * 1024 * 1024; + info->mmio_bar = 0; + info->msi_cap_offset = IS_SKYLAKE(gvt->dev_priv) ? 0xac : 0x90; + info->gtt_start_offset = 8 * 1024 * 1024; + info->gtt_entry_size = 8; + info->gtt_entry_size_shift = 3; + info->gmadr_bytes_in_cmd = 8; + info->max_surface_size = 36 * 1024 * 1024; + } +} + +static int gvt_service_thread(void *data) +{ + struct intel_gvt *gvt = (struct intel_gvt *)data; + int ret; + + gvt_dbg_core("service thread start\n"); + + while (!kthread_should_stop()) { + ret = wait_event_interruptible(gvt->service_thread_wq, + kthread_should_stop() || gvt->service_request); + + if (kthread_should_stop()) + break; + + if (WARN_ONCE(ret, "service thread is waken up by signal.\n")) + continue; + + if (test_and_clear_bit(INTEL_GVT_REQUEST_EMULATE_VBLANK, + (void *)&gvt->service_request)) { + mutex_lock(&gvt->lock); + intel_gvt_emulate_vblank(gvt); + mutex_unlock(&gvt->lock); + } + } + + return 0; +} + +static void clean_service_thread(struct intel_gvt *gvt) +{ + kthread_stop(gvt->service_thread); +} + +static int init_service_thread(struct intel_gvt *gvt) +{ + init_waitqueue_head(&gvt->service_thread_wq); + + gvt->service_thread = kthread_run(gvt_service_thread, + gvt, "gvt_service_thread"); + if (IS_ERR(gvt->service_thread)) { + gvt_err("fail to start service thread.\n"); + return PTR_ERR(gvt->service_thread); + } + return 0; } /** @@ -99,14 +174,23 @@ static void init_device_info(struct intel_gvt *gvt) */ void intel_gvt_clean_device(struct drm_i915_private *dev_priv) { - struct intel_gvt *gvt = &dev_priv->gvt; + struct intel_gvt *gvt = to_gvt(dev_priv); - if (WARN_ON(!gvt->initialized)) + if (WARN_ON(!gvt)) return; - /* Other de-initialization of GVT components will be introduced. */ + clean_service_thread(gvt); + intel_gvt_clean_cmd_parser(gvt); + intel_gvt_clean_sched_policy(gvt); + intel_gvt_clean_workload_scheduler(gvt); + intel_gvt_clean_opregion(gvt); + intel_gvt_clean_gtt(gvt); + intel_gvt_clean_irq(gvt); + intel_gvt_clean_mmio_info(gvt); + intel_gvt_free_firmware(gvt); - gvt->initialized = false; + kfree(dev_priv->gvt); + dev_priv->gvt = NULL; } /** @@ -122,7 +206,9 @@ void intel_gvt_clean_device(struct drm_i915_private *dev_priv) */ int intel_gvt_init_device(struct drm_i915_private *dev_priv) { - struct intel_gvt *gvt = &dev_priv->gvt; + struct intel_gvt *gvt; + int ret; + /* * Cannot initialize GVT device without intel_gvt_host gets * initialized first. @@ -130,16 +216,76 @@ int intel_gvt_init_device(struct drm_i915_private *dev_priv) if (WARN_ON(!intel_gvt_host.initialized)) return -EINVAL; - if (WARN_ON(gvt->initialized)) + if (WARN_ON(dev_priv->gvt)) return -EEXIST; + gvt = kzalloc(sizeof(struct intel_gvt), GFP_KERNEL); + if (!gvt) + return -ENOMEM; + gvt_dbg_core("init gvt device\n"); + mutex_init(&gvt->lock); + gvt->dev_priv = dev_priv; + init_device_info(gvt); - /* - * Other initialization of GVT components will be introduce here. - */ + + ret = intel_gvt_setup_mmio_info(gvt); + if (ret) + return ret; + + ret = intel_gvt_load_firmware(gvt); + if (ret) + goto out_clean_mmio_info; + + ret = intel_gvt_init_irq(gvt); + if (ret) + goto out_free_firmware; + + ret = intel_gvt_init_gtt(gvt); + if (ret) + goto out_clean_irq; + + ret = intel_gvt_init_opregion(gvt); + if (ret) + goto out_clean_gtt; + + ret = intel_gvt_init_workload_scheduler(gvt); + if (ret) + goto out_clean_opregion; + + ret = intel_gvt_init_sched_policy(gvt); + if (ret) + goto out_clean_workload_scheduler; + + ret = intel_gvt_init_cmd_parser(gvt); + if (ret) + goto out_clean_sched_policy; + + ret = init_service_thread(gvt); + if (ret) + goto out_clean_cmd_parser; + gvt_dbg_core("gvt device creation is done\n"); - gvt->initialized = true; + dev_priv->gvt = gvt; return 0; + +out_clean_cmd_parser: + intel_gvt_clean_cmd_parser(gvt); +out_clean_sched_policy: + intel_gvt_clean_sched_policy(gvt); +out_clean_workload_scheduler: + intel_gvt_clean_workload_scheduler(gvt); +out_clean_opregion: + intel_gvt_clean_opregion(gvt); +out_clean_gtt: + intel_gvt_clean_gtt(gvt); +out_clean_irq: + intel_gvt_clean_irq(gvt); +out_free_firmware: + intel_gvt_free_firmware(gvt); +out_clean_mmio_info: + intel_gvt_clean_mmio_info(gvt); + kfree(gvt); + return ret; } |