1 files changed, 359 insertions, 0 deletions
diff --git a/drivers/gpu/drm/xe/xe_device.c b/drivers/gpu/drm/xe/xe_device.c
new file mode 100644
index 000000000000..93dea2b9c464
--- /dev/null
+++ b/drivers/gpu/drm/xe/xe_device.c
@@ -0,0 +1,359 @@
+// SPDX-License-Identifier: MIT
+/*
+ * Copyright © 2021 Intel Corporation
+ */
+
+#include "xe_device.h"
+
+#include <drm/drm_gem_ttm_helper.h>
+#include <drm/drm_aperture.h>
+#include <drm/drm_ioctl.h>
+#include <drm/xe_drm.h>
+#include <drm/drm_managed.h>
+#include <drm/drm_atomic_helper.h>
+
+#include "xe_bo.h"
+#include "xe_debugfs.h"
+#include "xe_dma_buf.h"
+#include "xe_drv.h"
+#include "xe_engine.h"
+#include "xe_exec.h"
+#include "xe_gt.h"
+#include "xe_irq.h"
+#include "xe_module.h"
+#include "xe_mmio.h"
+#include "xe_pcode.h"
+#include "xe_pm.h"
+#include "xe_query.h"
+#include "xe_vm.h"
+#include "xe_vm_madvise.h"
+#include "xe_wait_user_fence.h"
+
+static int xe_file_open(struct drm_device *dev, struct drm_file *file)
+{
+	struct xe_file *xef;
+
+	xef = kzalloc(sizeof(*xef), GFP_KERNEL);
+	if (!xef)
+		return -ENOMEM;
+
+	xef->drm = file;
+
+	mutex_init(&xef->vm.lock);
+	xa_init_flags(&xef->vm.xa, XA_FLAGS_ALLOC1);
+
+	mutex_init(&xef->engine.lock);
+	xa_init_flags(&xef->engine.xa, XA_FLAGS_ALLOC1);
+
+	file->driver_priv = xef;
+	return 0;
+}
+
+static void device_kill_persitent_engines(struct xe_device *xe,
+					  struct xe_file *xef);
+
+static void xe_file_close(struct drm_device *dev, struct drm_file *file)
+{
+	struct xe_device *xe = to_xe_device(dev);
+	struct xe_file *xef = file->driver_priv;
+	struct xe_vm *vm;
+	struct xe_engine *e;
+	unsigned long idx;
+
+	mutex_lock(&xef->engine.lock);
+	xa_for_each(&xef->engine.xa, idx, e) {
+		xe_engine_kill(e);
+		xe_engine_put(e);
+	}
+	mutex_unlock(&xef->engine.lock);
+	mutex_destroy(&xef->engine.lock);
+	device_kill_persitent_engines(xe, xef);
+
+	mutex_lock(&xef->vm.lock);
+	xa_for_each(&xef->vm.xa, idx, vm)
+		xe_vm_close_and_put(vm);
+	mutex_unlock(&xef->vm.lock);
+	mutex_destroy(&xef->vm.lock);
+
+	kfree(xef);
+}
+
+static const struct drm_ioctl_desc xe_ioctls[] = {
+	DRM_IOCTL_DEF_DRV(XE_DEVICE_QUERY, xe_query_ioctl, DRM_RENDER_ALLOW),
+	DRM_IOCTL_DEF_DRV(XE_GEM_CREATE, xe_gem_create_ioctl, DRM_RENDER_ALLOW),
+	DRM_IOCTL_DEF_DRV(XE_GEM_MMAP_OFFSET, xe_gem_mmap_offset_ioctl,
+			  DRM_RENDER_ALLOW),
+	DRM_IOCTL_DEF_DRV(XE_VM_CREATE, xe_vm_create_ioctl, DRM_RENDER_ALLOW),
+	DRM_IOCTL_DEF_DRV(XE_VM_DESTROY, xe_vm_destroy_ioctl, DRM_RENDER_ALLOW),
+	DRM_IOCTL_DEF_DRV(XE_VM_BIND, xe_vm_bind_ioctl, DRM_RENDER_ALLOW),
+	DRM_IOCTL_DEF_DRV(XE_ENGINE_CREATE, xe_engine_create_ioctl,
+			  DRM_RENDER_ALLOW),
+	DRM_IOCTL_DEF_DRV(XE_ENGINE_DESTROY, xe_engine_destroy_ioctl,
+			  DRM_RENDER_ALLOW),
+	DRM_IOCTL_DEF_DRV(XE_EXEC, xe_exec_ioctl, DRM_RENDER_ALLOW),
+	DRM_IOCTL_DEF_DRV(XE_MMIO, xe_mmio_ioctl, DRM_RENDER_ALLOW),
+	DRM_IOCTL_DEF_DRV(XE_ENGINE_SET_PROPERTY, xe_engine_set_property_ioctl,
+			  DRM_RENDER_ALLOW),
+	DRM_IOCTL_DEF_DRV(XE_WAIT_USER_FENCE, xe_wait_user_fence_ioctl,
+			  DRM_RENDER_ALLOW),
+	DRM_IOCTL_DEF_DRV(XE_VM_MADVISE, xe_vm_madvise_ioctl, DRM_RENDER_ALLOW),
+};
+
+static const struct file_operations xe_driver_fops = {
+	.owner = THIS_MODULE,
+	.open = drm_open,
+	.release = drm_release_noglobal,
+	.unlocked_ioctl = drm_ioctl,
+	.mmap = drm_gem_mmap,
+	.poll = drm_poll,
+	.read = drm_read,
+//	.compat_ioctl = i915_ioc32_compat_ioctl,
+	.llseek = noop_llseek,
+};
+
+static void xe_driver_release(struct drm_device *dev)
+{
+	struct xe_device *xe = to_xe_device(dev);
+
+	pci_set_drvdata(to_pci_dev(xe->drm.dev), NULL);
+}
+
+static struct drm_driver driver = {
+	/* Don't use MTRRs here; the Xserver or userspace app should
+	 * deal with them for Intel hardware.
+	 */
+	.driver_features =
+	    DRIVER_GEM |
+	    DRIVER_RENDER | DRIVER_SYNCOBJ |
+	    DRIVER_SYNCOBJ_TIMELINE,
+	.open = xe_file_open,
+	.postclose = xe_file_close,
+
+	.gem_prime_import = xe_gem_prime_import,
+
+	.dumb_create = xe_bo_dumb_create,
+	.dumb_map_offset = drm_gem_ttm_dumb_map_offset,
+	.release = &xe_driver_release,
+
+	.ioctls = xe_ioctls,
+	.num_ioctls = ARRAY_SIZE(xe_ioctls),
+	.fops = &xe_driver_fops,
+	.name = DRIVER_NAME,
+	.desc = DRIVER_DESC,
+	.date = DRIVER_DATE,
+	.major = DRIVER_MAJOR,
+	.minor = DRIVER_MINOR,
+	.patchlevel = DRIVER_PATCHLEVEL,
+};
+
+static void xe_device_destroy(struct drm_device *dev, void *dummy)
+{
+	struct xe_device *xe = to_xe_device(dev);
+
+	destroy_workqueue(xe->ordered_wq);
+	mutex_destroy(&xe->persitent_engines.lock);
+	ttm_device_fini(&xe->ttm);
+}
+
+struct xe_device *xe_device_create(struct pci_dev *pdev,
+				   const struct pci_device_id *ent)
+{
+	struct xe_device *xe;
+	int err;
+
+	err = drm_aperture_remove_conflicting_pci_framebuffers(pdev, &driver);
+	if (err)
+		return ERR_PTR(err);
+
+	xe = devm_drm_dev_alloc(&pdev->dev, &driver, struct xe_device, drm);
+	if (IS_ERR(xe))
+		return xe;
+
+	err = ttm_device_init(&xe->ttm, &xe_ttm_funcs, xe->drm.dev,
+			      xe->drm.anon_inode->i_mapping,
+			      xe->drm.vma_offset_manager, false, false);
+	if (WARN_ON(err))
+		goto err_put;
+
+	xe->info.devid = pdev->device;
+	xe->info.revid = pdev->revision;
+	xe->info.enable_guc = enable_guc;
+
+	spin_lock_init(&xe->irq.lock);
+
+	init_waitqueue_head(&xe->ufence_wq);
+
+	mutex_init(&xe->usm.lock);
+	xa_init_flags(&xe->usm.asid_to_vm, XA_FLAGS_ALLOC1);
+
+	mutex_init(&xe->persitent_engines.lock);
+	INIT_LIST_HEAD(&xe->persitent_engines.list);
+
+	spin_lock_init(&xe->pinned.lock);
+	INIT_LIST_HEAD(&xe->pinned.kernel_bo_present);
+	INIT_LIST_HEAD(&xe->pinned.external_vram);
+	INIT_LIST_HEAD(&xe->pinned.evicted);
+
+	xe->ordered_wq = alloc_ordered_workqueue("xe-ordered-wq", 0);
+
+	mutex_init(&xe->sb_lock);
+	xe->enabled_irq_mask = ~0;
+
+	err = drmm_add_action_or_reset(&xe->drm, xe_device_destroy, NULL);
+	if (err)
+		goto err_put;
+
+	mutex_init(&xe->mem_access.lock);
+	return xe;
+
+err_put:
+	drm_dev_put(&xe->drm);
+
+	return ERR_PTR(err);
+}
+
+int xe_device_probe(struct xe_device *xe)
+{
+	struct xe_gt *gt;
+	int err;
+	u8 id;
+
+	xe->info.mem_region_mask = 1;
+
+	for_each_gt(gt, xe, id) {
+		err = xe_gt_alloc(xe, gt);
+		if (err)
+			return err;
+	}
+
+	err = xe_mmio_init(xe);
+	if (err)
+		return err;
+
+	for_each_gt(gt, xe, id) {
+		err = xe_pcode_probe(gt);
+		if (err)
+			return err;
+	}
+
+	err = xe_irq_install(xe);
+	if (err)
+		return err;
+
+	for_each_gt(gt, xe, id) {
+		err = xe_gt_init_early(gt);
+		if (err)
+			goto err_irq_shutdown;
+	}
+
+	err = xe_mmio_probe_vram(xe);
+	if (err)
+		goto err_irq_shutdown;
+
+	for_each_gt(gt, xe, id) {
+		err = xe_gt_init_noalloc(gt);
+		if (err)
+			goto err_irq_shutdown;
+	}
+
+	for_each_gt(gt, xe, id) {
+		err = xe_gt_init(gt);
+		if (err)
+			goto err_irq_shutdown;
+	}
+
+	err = drm_dev_register(&xe->drm, 0);
+	if (err)
+		goto err_irq_shutdown;
+
+	xe_debugfs_register(xe);
+
+	return 0;
+
+err_irq_shutdown:
+	xe_irq_shutdown(xe);
+	return err;
+}
+
+void xe_device_remove(struct xe_device *xe)
+{
+	xe_irq_shutdown(xe);
+}
+
+void xe_device_shutdown(struct xe_device *xe)
+{
+}
+
+void xe_device_add_persitent_engines(struct xe_device *xe, struct xe_engine *e)
+{
+	mutex_lock(&xe->persitent_engines.lock);
+	list_add_tail(&e->persitent.link, &xe->persitent_engines.list);
+	mutex_unlock(&xe->persitent_engines.lock);
+}
+
+void xe_device_remove_persitent_engines(struct xe_device *xe,
+					struct xe_engine *e)
+{
+	mutex_lock(&xe->persitent_engines.lock);
+	if (!list_empty(&e->persitent.link))
+		list_del(&e->persitent.link);
+	mutex_unlock(&xe->persitent_engines.lock);
+}
+
+static void device_kill_persitent_engines(struct xe_device *xe,
+					  struct xe_file *xef)
+{
+	struct xe_engine *e, *next;
+
+	mutex_lock(&xe->persitent_engines.lock);
+	list_for_each_entry_safe(e, next, &xe->persitent_engines.list,
+				 persitent.link)
+		if (e->persitent.xef == xef) {
+			xe_engine_kill(e);
+			list_del_init(&e->persitent.link);
+		}
+	mutex_unlock(&xe->persitent_engines.lock);
+}
+
+#define SOFTWARE_FLAGS_SPR33         _MMIO(0x4F084)
+
+void xe_device_wmb(struct xe_device *xe)
+{
+	struct xe_gt *gt = xe_device_get_gt(xe, 0);
+
+	wmb();
+	if (IS_DGFX(xe))
+		xe_mmio_write32(gt, SOFTWARE_FLAGS_SPR33.reg, 0);
+}
+
+u32 xe_device_ccs_bytes(struct xe_device *xe, u64 size)
+{
+	return xe_device_has_flat_ccs(xe) ?
+		DIV_ROUND_UP(size, NUM_BYTES_PER_CCS_BYTE) : 0;
+}
+
+void xe_device_mem_access_get(struct xe_device *xe)
+{
+	bool resumed = xe_pm_runtime_resume_if_suspended(xe);
+
+	mutex_lock(&xe->mem_access.lock);
+	if (xe->mem_access.ref++ == 0)
+		xe->mem_access.hold_rpm = xe_pm_runtime_get_if_active(xe);
+	mutex_unlock(&xe->mem_access.lock);
+
+	/* The usage counter increased if device was immediately resumed */
+	if (resumed)
+		xe_pm_runtime_put(xe);
+
+	XE_WARN_ON(xe->mem_access.ref == U32_MAX);
+}
+
+void xe_device_mem_access_put(struct xe_device *xe)
+{
+	mutex_lock(&xe->mem_access.lock);
+	if (--xe->mem_access.ref == 0 && xe->mem_access.hold_rpm)
+		xe_pm_runtime_put(xe);
+	mutex_unlock(&xe->mem_access.lock);
+
+	XE_WARN_ON(xe->mem_access.ref < 0);
+}