drm/i915/gvt: merge struct kvmgt_vdev into struct intel_vgpu

Move towards having only a single structure for the per-VGPU state.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Zhi Wang <zhi.a.wang@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20220411141403.86980-11-hch@lst.de
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Reviewed-by: Zhi Wang <zhi.a.wang@intel.com>

diff --git a/drivers/gpu/drm/i915/gvt/gvt.h b/drivers/gpu/drm/i915/gvt/gvt.h
index 97150a1..628dd68 100644 (file)
--- a/drivers/gpu/drm/i915/gvt/gvt.h
+++ b/drivers/gpu/drm/i915/gvt/gvt.h
@@ -207,21 +207,36 @@ struct intel_vgpu {
 
        struct dentry *debugfs;
 
-       /* Hypervisor-specific device state. */
-       void *vdev;
-
        struct list_head dmabuf_obj_list_head;
        struct mutex dmabuf_lock;
        struct idr object_idr;
        struct intel_vgpu_vblank_timer vblank_timer;
 
        u32 scan_nonprivbb;
-};
 
-static inline void *intel_vgpu_vdev(struct intel_vgpu *vgpu)
-{
-       return vgpu->vdev;
-}
+       struct mdev_device *mdev;
+       struct vfio_region *region;
+       int num_regions;
+       struct eventfd_ctx *intx_trigger;
+       struct eventfd_ctx *msi_trigger;
+
+       /*
+        * Two caches are used to avoid mapping duplicated pages (eg.
+        * scratch pages). This help to reduce dma setup overhead.
+        */
+       struct rb_root gfn_cache;
+       struct rb_root dma_addr_cache;
+       unsigned long nr_cache_entries;
+       struct mutex cache_lock;
+
+       struct notifier_block iommu_notifier;
+       struct notifier_block group_notifier;
+       struct kvm *kvm;
+       struct work_struct release_work;
+       atomic_t released;
+       struct vfio_device *vfio_device;
+       struct vfio_group *vfio_group;
+};
 
 /* validating GM healthy status*/
 #define vgpu_is_vm_unhealthy(ret_val) \

diff --git a/drivers/gpu/drm/i915/gvt/hypercall.h b/drivers/gpu/drm/i915/gvt/hypercall.h
index 27890a5..eacee6f 100644 (file)
--- a/drivers/gpu/drm/i915/gvt/hypercall.h
+++ b/drivers/gpu/drm/i915/gvt/hypercall.h
@@ -44,7 +44,6 @@ struct device;
 struct intel_gvt_mpt {
        int (*host_init)(struct device *dev, void *gvt);
        void (*host_exit)(struct device *dev, void *gvt);
-       int (*attach_vgpu)(void *vgpu, unsigned long *handle);
        void (*detach_vgpu)(void *vgpu);
        int (*inject_msi)(unsigned long handle, u32 addr, u16 data);
        int (*enable_page_track)(unsigned long handle, u64 gfn);

diff --git a/drivers/gpu/drm/i915/gvt/kvmgt.c b/drivers/gpu/drm/i915/gvt/kvmgt.c
index f7b8ce8..1c2b949 100644 (file)
--- a/drivers/gpu/drm/i915/gvt/kvmgt.c
+++ b/drivers/gpu/drm/i915/gvt/kvmgt.c
@@ -112,37 +112,6 @@ struct gvt_dma {
        struct kref ref;
 };
 
-struct kvmgt_vdev {
-       struct intel_vgpu *vgpu;
-       struct mdev_device *mdev;
-       struct vfio_region *region;
-       int num_regions;
-       struct eventfd_ctx *intx_trigger;
-       struct eventfd_ctx *msi_trigger;
-
-       /*
-        * Two caches are used to avoid mapping duplicated pages (eg.
-        * scratch pages). This help to reduce dma setup overhead.
-        */
-       struct rb_root gfn_cache;
-       struct rb_root dma_addr_cache;
-       unsigned long nr_cache_entries;
-       struct mutex cache_lock;
-
-       struct notifier_block iommu_notifier;
-       struct notifier_block group_notifier;
-       struct kvm *kvm;
-       struct work_struct release_work;
-       atomic_t released;
-       struct vfio_device *vfio_device;
-       struct vfio_group *vfio_group;
-};
-
-static inline struct kvmgt_vdev *kvmgt_vdev(struct intel_vgpu *vgpu)
-{
-       return intel_vgpu_vdev(vgpu);
-}
-
 static inline bool handle_valid(unsigned long handle)
 {
        return !!(handle & ~0xff);
@@ -269,7 +238,6 @@ static void gvt_unpin_guest_page(struct intel_vgpu *vgpu, unsigned long gfn,
                unsigned long size)
 {
        struct drm_i915_private *i915 = vgpu->gvt->gt->i915;
-       struct kvmgt_vdev *vdev = kvmgt_vdev(vgpu);
        int total_pages;
        int npage;
        int ret;
@@ -279,7 +247,7 @@ static void gvt_unpin_guest_page(struct intel_vgpu *vgpu, unsigned long gfn,
        for (npage = 0; npage < total_pages; npage++) {
                unsigned long cur_gfn = gfn + npage;
 
-               ret = vfio_group_unpin_pages(vdev->vfio_group, &cur_gfn, 1);
+               ret = vfio_group_unpin_pages(vgpu->vfio_group, &cur_gfn, 1);
                drm_WARN_ON(&i915->drm, ret != 1);
        }
 }
@@ -288,7 +256,6 @@ static void gvt_unpin_guest_page(struct intel_vgpu *vgpu, unsigned long gfn,
 static int gvt_pin_guest_page(struct intel_vgpu *vgpu, unsigned long gfn,
                unsigned long size, struct page **page)
 {
-       struct kvmgt_vdev *vdev = kvmgt_vdev(vgpu);
        unsigned long base_pfn = 0;
        int total_pages;
        int npage;
@@ -303,7 +270,7 @@ static int gvt_pin_guest_page(struct intel_vgpu *vgpu, unsigned long gfn,
                unsigned long cur_gfn = gfn + npage;
                unsigned long pfn;
 
-               ret = vfio_group_pin_pages(vdev->vfio_group, &cur_gfn, 1,
+               ret = vfio_group_pin_pages(vgpu->vfio_group, &cur_gfn, 1,
                                           IOMMU_READ | IOMMU_WRITE, &pfn);
                if (ret != 1) {
                        gvt_vgpu_err("vfio_pin_pages failed for gfn 0x%lx, ret %d\n",
@@ -370,7 +337,7 @@ static void gvt_dma_unmap_page(struct intel_vgpu *vgpu, unsigned long gfn,
 static struct gvt_dma *__gvt_cache_find_dma_addr(struct intel_vgpu *vgpu,
                dma_addr_t dma_addr)
 {
-       struct rb_node *node = kvmgt_vdev(vgpu)->dma_addr_cache.rb_node;
+       struct rb_node *node = vgpu->dma_addr_cache.rb_node;
        struct gvt_dma *itr;
 
        while (node) {
@@ -388,7 +355,7 @@ static struct gvt_dma *__gvt_cache_find_dma_addr(struct intel_vgpu *vgpu,
 
 static struct gvt_dma *__gvt_cache_find_gfn(struct intel_vgpu *vgpu, gfn_t gfn)
 {
-       struct rb_node *node = kvmgt_vdev(vgpu)->gfn_cache.rb_node;
+       struct rb_node *node = vgpu->gfn_cache.rb_node;
        struct gvt_dma *itr;
 
        while (node) {
@@ -409,7 +376,6 @@ static int __gvt_cache_add(struct intel_vgpu *vgpu, gfn_t gfn,
 {
        struct gvt_dma *new, *itr;
        struct rb_node **link, *parent = NULL;
-       struct kvmgt_vdev *vdev = kvmgt_vdev(vgpu);
 
        new = kzalloc(sizeof(struct gvt_dma), GFP_KERNEL);
        if (!new)
@@ -422,7 +388,7 @@ static int __gvt_cache_add(struct intel_vgpu *vgpu, gfn_t gfn,
        kref_init(&new->ref);
 
        /* gfn_cache maps gfn to struct gvt_dma. */
-       link = &vdev->gfn_cache.rb_node;
+       link = &vgpu->gfn_cache.rb_node;
        while (*link) {
                parent = *link;
                itr = rb_entry(parent, struct gvt_dma, gfn_node);
@@ -433,11 +399,11 @@ static int __gvt_cache_add(struct intel_vgpu *vgpu, gfn_t gfn,
                        link = &parent->rb_right;
        }
        rb_link_node(&new->gfn_node, parent, link);
-       rb_insert_color(&new->gfn_node, &vdev->gfn_cache);
+       rb_insert_color(&new->gfn_node, &vgpu->gfn_cache);
 
        /* dma_addr_cache maps dma addr to struct gvt_dma. */
        parent = NULL;
-       link = &vdev->dma_addr_cache.rb_node;
+       link = &vgpu->dma_addr_cache.rb_node;
        while (*link) {
                parent = *link;
                itr = rb_entry(parent, struct gvt_dma, dma_addr_node);
@@ -448,51 +414,46 @@ static int __gvt_cache_add(struct intel_vgpu *vgpu, gfn_t gfn,
                        link = &parent->rb_right;
        }
        rb_link_node(&new->dma_addr_node, parent, link);
-       rb_insert_color(&new->dma_addr_node, &vdev->dma_addr_cache);
+       rb_insert_color(&new->dma_addr_node, &vgpu->dma_addr_cache);
 
-       vdev->nr_cache_entries++;
+       vgpu->nr_cache_entries++;
        return 0;
 }
 
 static void __gvt_cache_remove_entry(struct intel_vgpu *vgpu,
                                struct gvt_dma *entry)
 {
-       struct kvmgt_vdev *vdev = kvmgt_vdev(vgpu);
-
-       rb_erase(&entry->gfn_node, &vdev->gfn_cache);
-       rb_erase(&entry->dma_addr_node, &vdev->dma_addr_cache);
+       rb_erase(&entry->gfn_node, &vgpu->gfn_cache);
+       rb_erase(&entry->dma_addr_node, &vgpu->dma_addr_cache);
        kfree(entry);
-       vdev->nr_cache_entries--;
+       vgpu->nr_cache_entries--;
 }
 
 static void gvt_cache_destroy(struct intel_vgpu *vgpu)
 {
        struct gvt_dma *dma;
        struct rb_node *node = NULL;
-       struct kvmgt_vdev *vdev = kvmgt_vdev(vgpu);
 
        for (;;) {
-               mutex_lock(&vdev->cache_lock);
-               node = rb_first(&vdev->gfn_cache);
+               mutex_lock(&vgpu->cache_lock);
+               node = rb_first(&vgpu->gfn_cache);
                if (!node) {
-                       mutex_unlock(&vdev->cache_lock);
+                       mutex_unlock(&vgpu->cache_lock);
                        break;
                }
                dma = rb_entry(node, struct gvt_dma, gfn_node);
                gvt_dma_unmap_page(vgpu, dma->gfn, dma->dma_addr, dma->size);
                __gvt_cache_remove_entry(vgpu, dma);
-               mutex_unlock(&vdev->cache_lock);
+               mutex_unlock(&vgpu->cache_lock);
        }
 }
 
 static void gvt_cache_init(struct intel_vgpu *vgpu)
 {
-       struct kvmgt_vdev *vdev = kvmgt_vdev(vgpu);
-
-       vdev->gfn_cache = RB_ROOT;
-       vdev->dma_addr_cache = RB_ROOT;
-       vdev->nr_cache_entries = 0;
-       mutex_init(&vdev->cache_lock);
+       vgpu->gfn_cache = RB_ROOT;
+       vgpu->dma_addr_cache = RB_ROOT;
+       vgpu->nr_cache_entries = 0;
+       mutex_init(&vgpu->cache_lock);
 }
 
 static void kvmgt_protect_table_init(struct kvmgt_guest_info *info)
@@ -566,18 +527,17 @@ static void kvmgt_protect_table_del(struct kvmgt_guest_info *info,
 static size_t intel_vgpu_reg_rw_opregion(struct intel_vgpu *vgpu, char *buf,
                size_t count, loff_t *ppos, bool iswrite)
 {
-       struct kvmgt_vdev *vdev = kvmgt_vdev(vgpu);
        unsigned int i = VFIO_PCI_OFFSET_TO_INDEX(*ppos) -
                        VFIO_PCI_NUM_REGIONS;
-       void *base = vdev->region[i].data;
+       void *base = vgpu->region[i].data;
        loff_t pos = *ppos & VFIO_PCI_OFFSET_MASK;
 
 
-       if (pos >= vdev->region[i].size || iswrite) {
+       if (pos >= vgpu->region[i].size || iswrite) {
                gvt_vgpu_err("invalid op or offset for Intel vgpu OpRegion\n");
                return -EINVAL;
        }
-       count = min(count, (size_t)(vdev->region[i].size - pos));
+       count = min(count, (size_t)(vgpu->region[i].size - pos));
        memcpy(buf, base + pos, count);
 
        return count;
@@ -670,8 +630,7 @@ static size_t intel_vgpu_reg_rw_edid(struct intel_vgpu *vgpu, char *buf,
        int ret;
        unsigned int i = VFIO_PCI_OFFSET_TO_INDEX(*ppos) -
                        VFIO_PCI_NUM_REGIONS;
-       struct vfio_edid_region *region =
-               (struct vfio_edid_region *)kvmgt_vdev(vgpu)->region[i].data;
+       struct vfio_edid_region *region = vgpu->region[i].data;
        loff_t pos = *ppos & VFIO_PCI_OFFSET_MASK;
 
        if (pos < region->vfio_edid_regs.edid_offset) {
@@ -703,34 +662,32 @@ static int intel_vgpu_register_reg(struct intel_vgpu *vgpu,
                const struct intel_vgpu_regops *ops,
                size_t size, u32 flags, void *data)
 {
-       struct kvmgt_vdev *vdev = kvmgt_vdev(vgpu);
        struct vfio_region *region;
 
-       region = krealloc(vdev->region,
-                       (vdev->num_regions + 1) * sizeof(*region),
+       region = krealloc(vgpu->region,
+                       (vgpu->num_regions + 1) * sizeof(*region),
                        GFP_KERNEL);
        if (!region)
                return -ENOMEM;
 
-       vdev->region = region;
-       vdev->region[vdev->num_regions].type = type;
-       vdev->region[vdev->num_regions].subtype = subtype;
-       vdev->region[vdev->num_regions].ops = ops;
-       vdev->region[vdev->num_regions].size = size;
-       vdev->region[vdev->num_regions].flags = flags;
-       vdev->region[vdev->num_regions].data = data;
-       vdev->num_regions++;
+       vgpu->region = region;
+       vgpu->region[vgpu->num_regions].type = type;
+       vgpu->region[vgpu->num_regions].subtype = subtype;
+       vgpu->region[vgpu->num_regions].ops = ops;
+       vgpu->region[vgpu->num_regions].size = size;
+       vgpu->region[vgpu->num_regions].flags = flags;
+       vgpu->region[vgpu->num_regions].data = data;
+       vgpu->num_regions++;
        return 0;
 }
 
 static int kvmgt_get_vfio_device(void *p_vgpu)
 {
        struct intel_vgpu *vgpu = (struct intel_vgpu *)p_vgpu;
-       struct kvmgt_vdev *vdev = kvmgt_vdev(vgpu);
 
-       vdev->vfio_device = vfio_device_get_from_dev(
-               mdev_dev(vdev->mdev));
-       if (!vdev->vfio_device) {
+       vgpu->vfio_device = vfio_device_get_from_dev(
+               mdev_dev(vgpu->mdev));
+       if (!vgpu->vfio_device) {
                gvt_vgpu_err("failed to get vfio device\n");
                return -ENODEV;
        }
@@ -796,14 +753,14 @@ static int kvmgt_set_edid(void *p_vgpu, int port_num)
        return ret;
 }
 
-static void kvmgt_put_vfio_device(void *vgpu)
+static void kvmgt_put_vfio_device(void *data)
 {
-       struct kvmgt_vdev *vdev = kvmgt_vdev((struct intel_vgpu *)vgpu);
+       struct intel_vgpu *vgpu = data;
 
-       if (WARN_ON(!vdev->vfio_device))
+       if (WARN_ON(!vgpu->vfio_device))
                return;
 
-       vfio_device_put(vdev->vfio_device);
+       vfio_device_put(vgpu->vfio_device);
 }
 
 static int intel_vgpu_create(struct mdev_device *mdev)
@@ -830,9 +787,9 @@ static int intel_vgpu_create(struct mdev_device *mdev)
                goto out;
        }
 
-       INIT_WORK(&kvmgt_vdev(vgpu)->release_work, intel_vgpu_release_work);
+       INIT_WORK(&vgpu->release_work, intel_vgpu_release_work);
 
-       kvmgt_vdev(vgpu)->mdev = mdev;
+       vgpu->mdev = mdev;
        mdev_set_drvdata(mdev, vgpu);
 
        gvt_dbg_core("intel_vgpu_create succeeded for mdev: %s\n",
@@ -857,10 +814,8 @@ static int intel_vgpu_remove(struct mdev_device *mdev)
 static int intel_vgpu_iommu_notifier(struct notifier_block *nb,
                                     unsigned long action, void *data)
 {
-       struct kvmgt_vdev *vdev = container_of(nb,
-                                              struct kvmgt_vdev,
-                                              iommu_notifier);
-       struct intel_vgpu *vgpu = vdev->vgpu;
+       struct intel_vgpu *vgpu =
+               container_of(nb, struct intel_vgpu, iommu_notifier);
 
        if (action == VFIO_IOMMU_NOTIFY_DMA_UNMAP) {
                struct vfio_iommu_type1_dma_unmap *unmap = data;
@@ -870,7 +825,7 @@ static int intel_vgpu_iommu_notifier(struct notifier_block *nb,
                iov_pfn = unmap->iova >> PAGE_SHIFT;
                end_iov_pfn = iov_pfn + unmap->size / PAGE_SIZE;
 
-               mutex_lock(&vdev->cache_lock);
+               mutex_lock(&vgpu->cache_lock);
                for (; iov_pfn < end_iov_pfn; iov_pfn++) {
                        entry = __gvt_cache_find_gfn(vgpu, iov_pfn);
                        if (!entry)
@@ -880,7 +835,7 @@ static int intel_vgpu_iommu_notifier(struct notifier_block *nb,
                                           entry->size);
                        __gvt_cache_remove_entry(vgpu, entry);
                }
-               mutex_unlock(&vdev->cache_lock);
+               mutex_unlock(&vgpu->cache_lock);
        }
 
        return NOTIFY_OK;
@@ -889,16 +844,15 @@ static int intel_vgpu_iommu_notifier(struct notifier_block *nb,
 static int intel_vgpu_group_notifier(struct notifier_block *nb,
                                     unsigned long action, void *data)
 {
-       struct kvmgt_vdev *vdev = container_of(nb,
-                                              struct kvmgt_vdev,
-                                              group_notifier);
+       struct intel_vgpu *vgpu =
+               container_of(nb, struct intel_vgpu, group_notifier);
 
        /* the only action we care about */
        if (action == VFIO_GROUP_NOTIFY_SET_KVM) {
-               vdev->kvm = data;
+               vgpu->kvm = data;
 
                if (!data)
-                       schedule_work(&vdev->release_work);
+                       schedule_work(&vgpu->release_work);
        }
 
        return NOTIFY_OK;
@@ -907,17 +861,16 @@ static int intel_vgpu_group_notifier(struct notifier_block *nb,
 static int intel_vgpu_open_device(struct mdev_device *mdev)
 {
        struct intel_vgpu *vgpu = mdev_get_drvdata(mdev);
-       struct kvmgt_vdev *vdev = kvmgt_vdev(vgpu);
        unsigned long events;
        int ret;
        struct vfio_group *vfio_group;
 
-       vdev->iommu_notifier.notifier_call = intel_vgpu_iommu_notifier;
-       vdev->group_notifier.notifier_call = intel_vgpu_group_notifier;
+       vgpu->iommu_notifier.notifier_call = intel_vgpu_iommu_notifier;
+       vgpu->group_notifier.notifier_call = intel_vgpu_group_notifier;
 
        events = VFIO_IOMMU_NOTIFY_DMA_UNMAP;
        ret = vfio_register_notifier(mdev_dev(mdev), VFIO_IOMMU_NOTIFY, &events,
-                               &vdev->iommu_notifier);
+                               &vgpu->iommu_notifier);
        if (ret != 0) {
                gvt_vgpu_err("vfio_register_notifier for iommu failed: %d\n",
                        ret);
@@ -926,7 +879,7 @@ static int intel_vgpu_open_device(struct mdev_device *mdev)
 
        events = VFIO_GROUP_NOTIFY_SET_KVM;
        ret = vfio_register_notifier(mdev_dev(mdev), VFIO_GROUP_NOTIFY, &events,
-                               &vdev->group_notifier);
+                               &vgpu->group_notifier);
        if (ret != 0) {
                gvt_vgpu_err("vfio_register_notifier for group failed: %d\n",
                        ret);
@@ -939,7 +892,7 @@ static int intel_vgpu_open_device(struct mdev_device *mdev)
                gvt_vgpu_err("vfio_group_get_external_user_from_dev failed\n");
                goto undo_register;
        }
-       vdev->vfio_group = vfio_group;
+       vgpu->vfio_group = vfio_group;
 
        /* Take a module reference as mdev core doesn't take
         * a reference for vendor driver.
@@ -955,39 +908,37 @@ static int intel_vgpu_open_device(struct mdev_device *mdev)
 
        intel_gvt_activate_vgpu(vgpu);
 
-       atomic_set(&vdev->released, 0);
+       atomic_set(&vgpu->released, 0);
        return ret;
 
 undo_group:
-       vfio_group_put_external_user(vdev->vfio_group);
-       vdev->vfio_group = NULL;
+       vfio_group_put_external_user(vgpu->vfio_group);
+       vgpu->vfio_group = NULL;
 
 undo_register:
        vfio_unregister_notifier(mdev_dev(mdev), VFIO_GROUP_NOTIFY,
-                                       &vdev->group_notifier);
+                                       &vgpu->group_notifier);
 
 undo_iommu:
        vfio_unregister_notifier(mdev_dev(mdev), VFIO_IOMMU_NOTIFY,
-                                       &vdev->iommu_notifier);
+                                       &vgpu->iommu_notifier);
 out:
        return ret;
 }
 
 static void intel_vgpu_release_msi_eventfd_ctx(struct intel_vgpu *vgpu)
 {
-       struct kvmgt_vdev *vdev = kvmgt_vdev(vgpu);
        struct eventfd_ctx *trigger;
 
-       trigger = vdev->msi_trigger;
+       trigger = vgpu->msi_trigger;
        if (trigger) {
                eventfd_ctx_put(trigger);
-               vdev->msi_trigger = NULL;
+               vgpu->msi_trigger = NULL;
        }
 }
 
 static void __intel_vgpu_release(struct intel_vgpu *vgpu)
 {
-       struct kvmgt_vdev *vdev = kvmgt_vdev(vgpu);
        struct drm_i915_private *i915 = vgpu->gvt->gt->i915;
        struct kvmgt_guest_info *info;
        int ret;
@@ -995,18 +946,18 @@ static void __intel_vgpu_release(struct intel_vgpu *vgpu)
        if (!handle_valid(vgpu->handle))
                return;
 
-       if (atomic_cmpxchg(&vdev->released, 0, 1))
+       if (atomic_cmpxchg(&vgpu->released, 0, 1))
                return;
 
        intel_gvt_release_vgpu(vgpu);
 
-       ret = vfio_unregister_notifier(mdev_dev(vdev->mdev), VFIO_IOMMU_NOTIFY,
-                                       &vdev->iommu_notifier);
+       ret = vfio_unregister_notifier(mdev_dev(vgpu->mdev), VFIO_IOMMU_NOTIFY,
+                                       &vgpu->iommu_notifier);
        drm_WARN(&i915->drm, ret,
                 "vfio_unregister_notifier for iommu failed: %d\n", ret);
 
-       ret = vfio_unregister_notifier(mdev_dev(vdev->mdev), VFIO_GROUP_NOTIFY,
-                                       &vdev->group_notifier);
+       ret = vfio_unregister_notifier(mdev_dev(vgpu->mdev), VFIO_GROUP_NOTIFY,
+                                       &vgpu->group_notifier);
        drm_WARN(&i915->drm, ret,
                 "vfio_unregister_notifier for group failed: %d\n", ret);
 
@@ -1017,9 +968,9 @@ static void __intel_vgpu_release(struct intel_vgpu *vgpu)
        kvmgt_guest_exit(info);
 
        intel_vgpu_release_msi_eventfd_ctx(vgpu);
-       vfio_group_put_external_user(vdev->vfio_group);
+       vfio_group_put_external_user(vgpu->vfio_group);
 
-       vdev->kvm = NULL;
+       vgpu->kvm = NULL;
        vgpu->handle = 0;
 }
 
@@ -1032,10 +983,10 @@ static void intel_vgpu_close_device(struct mdev_device *mdev)
 
 static void intel_vgpu_release_work(struct work_struct *work)
 {
-       struct kvmgt_vdev *vdev = container_of(work, struct kvmgt_vdev,
-                                              release_work);
+       struct intel_vgpu *vgpu =
+               container_of(work, struct intel_vgpu, release_work);
 
-       __intel_vgpu_release(vdev->vgpu);
+       __intel_vgpu_release(vgpu);
 }
 
 static u64 intel_vgpu_get_bar_addr(struct intel_vgpu *vgpu, int bar)
@@ -1117,13 +1068,12 @@ static ssize_t intel_vgpu_rw(struct mdev_device *mdev, char *buf,
                        size_t count, loff_t *ppos, bool is_write)
 {
        struct intel_vgpu *vgpu = mdev_get_drvdata(mdev);
-       struct kvmgt_vdev *vdev = kvmgt_vdev(vgpu);
        unsigned int index = VFIO_PCI_OFFSET_TO_INDEX(*ppos);
        u64 pos = *ppos & VFIO_PCI_OFFSET_MASK;
        int ret = -EINVAL;
 
 
-       if (index >= VFIO_PCI_NUM_REGIONS + vdev->num_regions) {
+       if (index >= VFIO_PCI_NUM_REGIONS + vgpu->num_regions) {
                gvt_vgpu_err("invalid index: %u\n", index);
                return -EINVAL;
        }
@@ -1152,11 +1102,11 @@ static ssize_t intel_vgpu_rw(struct mdev_device *mdev, char *buf,
        case VFIO_PCI_ROM_REGION_INDEX:
                break;
        default:
-               if (index >= VFIO_PCI_NUM_REGIONS + vdev->num_regions)
+               if (index >= VFIO_PCI_NUM_REGIONS + vgpu->num_regions)
                        return -EINVAL;
 
                index -= VFIO_PCI_NUM_REGIONS;
-               return vdev->region[index].ops->rw(vgpu, buf, count,
+               return vgpu->region[index].ops->rw(vgpu, buf, count,
                                ppos, is_write);
        }
 
@@ -1409,7 +1359,7 @@ static int intel_vgpu_set_msi_trigger(struct intel_vgpu *vgpu,
                        gvt_vgpu_err("eventfd_ctx_fdget failed\n");
                        return PTR_ERR(trigger);
                }
-               kvmgt_vdev(vgpu)->msi_trigger = trigger;
+               vgpu->msi_trigger = trigger;
        } else if ((flags & VFIO_IRQ_SET_DATA_NONE) && !count)
                intel_vgpu_release_msi_eventfd_ctx(vgpu);
 
@@ -1461,7 +1411,6 @@ static long intel_vgpu_ioctl(struct mdev_device *mdev, unsigned int cmd,
                             unsigned long arg)
 {
        struct intel_vgpu *vgpu = mdev_get_drvdata(mdev);
-       struct kvmgt_vdev *vdev = kvmgt_vdev(vgpu);
        unsigned long minsz;
 
        gvt_dbg_core("vgpu%d ioctl, cmd: %d\n", vgpu->id, cmd);
@@ -1480,7 +1429,7 @@ static long intel_vgpu_ioctl(struct mdev_device *mdev, unsigned int cmd,
                info.flags = VFIO_DEVICE_FLAGS_PCI;
                info.flags |= VFIO_DEVICE_FLAGS_RESET;
                info.num_regions = VFIO_PCI_NUM_REGIONS +
-                               vdev->num_regions;
+                               vgpu->num_regions;
                info.num_irqs = VFIO_PCI_NUM_IRQS;
 
                return copy_to_user((void __user *)arg, &info, minsz) ?
@@ -1571,22 +1520,22 @@ static long intel_vgpu_ioctl(struct mdev_device *mdev, unsigned int cmd,
                                        .header.version = 1 };
 
                                if (info.index >= VFIO_PCI_NUM_REGIONS +
-                                               vdev->num_regions)
+                                               vgpu->num_regions)
                                        return -EINVAL;
                                info.index =
                                        array_index_nospec(info.index,
                                                        VFIO_PCI_NUM_REGIONS +
-                                                       vdev->num_regions);
+                                                       vgpu->num_regions);
 
                                i = info.index - VFIO_PCI_NUM_REGIONS;
 
                                info.offset =
                                        VFIO_PCI_INDEX_TO_OFFSET(info.index);
-                               info.size = vdev->region[i].size;
-                               info.flags = vdev->region[i].flags;
+                               info.size = vgpu->region[i].size;
+                               info.flags = vgpu->region[i].flags;
 
-                               cap_type.type = vdev->region[i].type;
-                               cap_type.subtype = vdev->region[i].subtype;
+                               cap_type.type = vgpu->region[i].type;
+                               cap_type.subtype = vgpu->region[i].subtype;
 
                                ret = vfio_info_add_capability(&caps,
                                                        &cap_type.header,
@@ -1928,15 +1877,13 @@ static int kvmgt_guest_init(struct mdev_device *mdev)
 {
        struct kvmgt_guest_info *info;
        struct intel_vgpu *vgpu;
-       struct kvmgt_vdev *vdev;
        struct kvm *kvm;
 
        vgpu = mdev_get_drvdata(mdev);
        if (handle_valid(vgpu->handle))
                return -EEXIST;
 
-       vdev = kvmgt_vdev(vgpu);
-       kvm = vdev->kvm;
+       kvm = vgpu->kvm;
        if (!kvm || kvm->mm != current->mm) {
                gvt_vgpu_err("KVM is required to use Intel vGPU\n");
                return -ESRCH;
@@ -1962,7 +1909,7 @@ static int kvmgt_guest_init(struct mdev_device *mdev)
        kvm_page_track_register_notifier(kvm, &info->track_node);
 
        debugfs_create_ulong(KVMGT_DEBUGFS_FILENAME, 0444, vgpu->debugfs,
-                            &vdev->nr_cache_entries);
+                            &vgpu->nr_cache_entries);
        return 0;
 }
 
@@ -1980,52 +1927,33 @@ static bool kvmgt_guest_exit(struct kvmgt_guest_info *info)
        return true;
 }
 
-static int kvmgt_attach_vgpu(void *p_vgpu, unsigned long *handle)
-{
-       struct intel_vgpu *vgpu = (struct intel_vgpu *)p_vgpu;
-
-       vgpu->vdev = kzalloc(sizeof(struct kvmgt_vdev), GFP_KERNEL);
-
-       if (!vgpu->vdev)
-               return -ENOMEM;
-
-       kvmgt_vdev(vgpu)->vgpu = vgpu;
-
-       return 0;
-}
-
 static void kvmgt_detach_vgpu(void *p_vgpu)
 {
        int i;
        struct intel_vgpu *vgpu = (struct intel_vgpu *)p_vgpu;
-       struct kvmgt_vdev *vdev = kvmgt_vdev(vgpu);
 
-       if (!vdev->region)
+       if (!vgpu->region)
                return;
 
-       for (i = 0; i < vdev->num_regions; i++)
-               if (vdev->region[i].ops->release)
-                       vdev->region[i].ops->release(vgpu,
-                                       &vdev->region[i]);
-       vdev->num_regions = 0;
-       kfree(vdev->region);
-       vdev->region = NULL;
-
-       kfree(vdev);
+       for (i = 0; i < vgpu->num_regions; i++)
+               if (vgpu->region[i].ops->release)
+                       vgpu->region[i].ops->release(vgpu,
+                                       &vgpu->region[i]);
+       vgpu->num_regions = 0;
+       kfree(vgpu->region);
+       vgpu->region = NULL;
 }
 
 static int kvmgt_inject_msi(unsigned long handle, u32 addr, u16 data)
 {
        struct kvmgt_guest_info *info;
        struct intel_vgpu *vgpu;
-       struct kvmgt_vdev *vdev;
 
        if (!handle_valid(handle))
                return -ESRCH;
 
        info = (struct kvmgt_guest_info *)handle;
        vgpu = info->vgpu;
-       vdev = kvmgt_vdev(vgpu);
 
        /*
         * When guest is poweroff, msi_trigger is set to NULL, but vgpu's
@@ -2036,10 +1964,10 @@ static int kvmgt_inject_msi(unsigned long handle, u32 addr, u16 data)
         * enabled by guest. so if msi_trigger is null, success is still
         * returned and don't inject interrupt into guest.
         */
-       if (vdev->msi_trigger == NULL)
+       if (vgpu->msi_trigger == NULL)
                return 0;
 
-       if (eventfd_signal(vdev->msi_trigger, 1) == 1)
+       if (eventfd_signal(vgpu->msi_trigger, 1) == 1)
                return 0;
 
        return -EFAULT;
@@ -2066,7 +1994,6 @@ static int kvmgt_dma_map_guest_page(unsigned long handle, unsigned long gfn,
                unsigned long size, dma_addr_t *dma_addr)
 {
        struct intel_vgpu *vgpu;
-       struct kvmgt_vdev *vdev;
        struct gvt_dma *entry;
        int ret;
 
@@ -2074,9 +2001,8 @@ static int kvmgt_dma_map_guest_page(unsigned long handle, unsigned long gfn,
                return -EINVAL;
 
        vgpu = ((struct kvmgt_guest_info *)handle)->vgpu;
-       vdev = kvmgt_vdev(vgpu);
 
-       mutex_lock(&vdev->cache_lock);
+       mutex_lock(&vgpu->cache_lock);
 
        entry = __gvt_cache_find_gfn(vgpu, gfn);
        if (!entry) {
@@ -2104,20 +2030,19 @@ static int kvmgt_dma_map_guest_page(unsigned long handle, unsigned long gfn,
                *dma_addr = entry->dma_addr;
        }
 
-       mutex_unlock(&vdev->cache_lock);
+       mutex_unlock(&vgpu->cache_lock);
        return 0;
 
 err_unmap:
        gvt_dma_unmap_page(vgpu, gfn, *dma_addr, size);
 err_unlock:
-       mutex_unlock(&vdev->cache_lock);
+       mutex_unlock(&vgpu->cache_lock);
        return ret;
 }
 
 static int kvmgt_dma_pin_guest_page(unsigned long handle, dma_addr_t dma_addr)
 {
        struct kvmgt_guest_info *info;
-       struct kvmgt_vdev *vdev;
        struct gvt_dma *entry;
        int ret = 0;
 
@@ -2125,15 +2050,14 @@ static int kvmgt_dma_pin_guest_page(unsigned long handle, dma_addr_t dma_addr)
                return -ENODEV;
 
        info = (struct kvmgt_guest_info *)handle;
-       vdev = kvmgt_vdev(info->vgpu);
 
-       mutex_lock(&vdev->cache_lock);
+       mutex_lock(&info->vgpu->cache_lock);
        entry = __gvt_cache_find_dma_addr(info->vgpu, dma_addr);
        if (entry)
                kref_get(&entry->ref);
        else
                ret = -ENOMEM;
-       mutex_unlock(&vdev->cache_lock);
+       mutex_unlock(&info->vgpu->cache_lock);
 
        return ret;
 }
@@ -2150,20 +2074,18 @@ static void __gvt_dma_release(struct kref *ref)
 static void kvmgt_dma_unmap_guest_page(unsigned long handle, dma_addr_t dma_addr)
 {
        struct intel_vgpu *vgpu;
-       struct kvmgt_vdev *vdev;
        struct gvt_dma *entry;
 
        if (!handle_valid(handle))
                return;
 
        vgpu = ((struct kvmgt_guest_info *)handle)->vgpu;
-       vdev = kvmgt_vdev(vgpu);
 
-       mutex_lock(&vdev->cache_lock);
+       mutex_lock(&vgpu->cache_lock);
        entry = __gvt_cache_find_dma_addr(vgpu, dma_addr);
        if (entry)
                kref_put(&entry->ref, __gvt_dma_release);
-       mutex_unlock(&vdev->cache_lock);
+       mutex_unlock(&vgpu->cache_lock);
 }
 
 static int kvmgt_rw_gpa(unsigned long handle, unsigned long gpa,
@@ -2176,8 +2098,7 @@ static int kvmgt_rw_gpa(unsigned long handle, unsigned long gpa,
 
        info = (struct kvmgt_guest_info *)handle;
 
-       return vfio_dma_rw(kvmgt_vdev(info->vgpu)->vfio_group,
-                          gpa, buf, len, write);
+       return vfio_dma_rw(info->vgpu->vfio_group, gpa, buf, len, write);
 }
 
 static int kvmgt_read_gpa(unsigned long handle, unsigned long gpa,
@@ -2215,7 +2136,6 @@ static bool kvmgt_is_valid_gfn(unsigned long handle, unsigned long gfn)
 static const struct intel_gvt_mpt kvmgt_mpt = {
        .host_init = kvmgt_host_init,
        .host_exit = kvmgt_host_exit,
-       .attach_vgpu = kvmgt_attach_vgpu,
        .detach_vgpu = kvmgt_detach_vgpu,
        .inject_msi = kvmgt_inject_msi,
        .enable_page_track = kvmgt_page_track_add,

diff --git a/drivers/gpu/drm/i915/gvt/mpt.h b/drivers/gpu/drm/i915/gvt/mpt.h
index 6d062cf..8a65930 100644 (file)
--- a/drivers/gpu/drm/i915/gvt/mpt.h
+++ b/drivers/gpu/drm/i915/gvt/mpt.h
@@ -72,22 +72,6 @@ static inline void intel_gvt_hypervisor_host_exit(struct device *dev, void *gvt)
 }
 
 /**
- * intel_gvt_hypervisor_attach_vgpu - call hypervisor to initialize vGPU
- * related stuffs inside hypervisor.
- *
- * Returns:
- * Zero on success, negative error code if failed.
- */
-static inline int intel_gvt_hypervisor_attach_vgpu(struct intel_vgpu *vgpu)
-{
-       /* optional to provide */
-       if (!intel_gvt_host.mpt->attach_vgpu)
-               return 0;
-
-       return intel_gvt_host.mpt->attach_vgpu(vgpu, &vgpu->handle);
-}
-
-/**
  * intel_gvt_hypervisor_detach_vgpu - call hypervisor to release vGPU
  * related stuffs inside hypervisor.
  *

diff --git a/drivers/gpu/drm/i915/gvt/vgpu.c b/drivers/gpu/drm/i915/gvt/vgpu.c
index 8dddd0a..fd335a7 100644 (file)
--- a/drivers/gpu/drm/i915/gvt/vgpu.c
+++ b/drivers/gpu/drm/i915/gvt/vgpu.c
@@ -405,13 +405,9 @@ static struct intel_vgpu *__intel_gvt_create_vgpu(struct intel_gvt *gvt,
 
        populate_pvinfo_page(vgpu);
 
-       ret = intel_gvt_hypervisor_attach_vgpu(vgpu);
-       if (ret)
-               goto out_clean_vgpu_resource;
-
        ret = intel_vgpu_init_gtt(vgpu);
        if (ret)
-               goto out_detach_hypervisor_vgpu;
+               goto out_clean_vgpu_resource;
 
        ret = intel_vgpu_init_opregion(vgpu);
        if (ret)
@@ -454,8 +450,6 @@ out_clean_opregion:
        intel_vgpu_clean_opregion(vgpu);
 out_clean_gtt:
        intel_vgpu_clean_gtt(vgpu);
-out_detach_hypervisor_vgpu:
-       intel_gvt_hypervisor_detach_vgpu(vgpu);
 out_clean_vgpu_resource:
        intel_vgpu_free_resource(vgpu);
 out_clean_vgpu_mmio: