[PATCH v2 00/16] drm/vmwgfx: fb, cursors and hashtable refactor

[PATCH v2 00/16] drm/vmwgfx: fb, cursors and hashtable refactor

[Zack Rusin]

From: Zack Rusin <zackr@vmware.com>

v2: Fix LKP and sparse reported issues

This is a bit larger series than usual but these are all connected in
various ways. The most important changes around everything is centered
include:
- finally getting rid of vmwgfx_hashtab and porting the driver to 
  linux/hashtable
- cleaning up the cursor mob handling, which fixes a bunch of cursor
  issues on kde configs
- removing vmwgfx fb code and porting it to drm fb helpers
- removing vmwgfx faked vblank handling

The rest is largely support code to make the transition easier (with some
igt fixes to get more of it running for regression testing). The result
is removal of over 1000loc with no loss in functionality.

Maaz Mombasawala (5):
  drm/vmwgfx: Refactor resource manager's hashtable to use
    linux/hashtable implementation.
  drm/vmwgfx: Remove ttm object hashtable
  drm/vmwgfx: Refactor resource validation hashtable to use
    linux/hashtable implementation.
  drm/vmwgfx: Refactor ttm reference object hashtable to use
    linux/hashtable.
  drm/vmwgfx : Remove vmwgfx_hashtab

Martin Krastev (1):
  drm/vmwgfx: Fix frame-size warning in vmw_mksstat_add_ioctl

Michael Banack (4):
  drm/vmwgfx: Clean up cursor mobs
  drm/vmwgfx: Start diffing new mob cursors against old ones
  drm/vmwgfx: Support cursor surfaces with mob cursor
  drm/vmwgfx: Diff cursors when using cmds

Zack Rusin (6):
  drm/vmwgfx: Write the driver id registers
  drm/vmwgfx: Do not allow invalid bpp's for dumb buffers
  drm/vmwgfx: Port the framebuffer code to drm fb helpers
  drm/vmwgfx: Remove explicit and broken vblank handling
  drm/vmwgfx: Add a mksstat counter for cotable resizes
  drm/vmwgfx: Optimize initial sizes of cotables

 Documentation/gpu/todo.rst                 |  11 -
 drivers/gpu/drm/vmwgfx/Kconfig             |   7 -
 drivers/gpu/drm/vmwgfx/Makefile            |   4 +-
 drivers/gpu/drm/vmwgfx/ttm_object.c        | 123 ++-
 drivers/gpu/drm/vmwgfx/ttm_object.h        |  20 +-
 drivers/gpu/drm/vmwgfx/vmwgfx_bo.c         |  16 +-
 drivers/gpu/drm/vmwgfx/vmwgfx_cmdbuf_res.c |  62 +-
 drivers/gpu/drm/vmwgfx/vmwgfx_cotable.c    |  29 +-
 drivers/gpu/drm/vmwgfx/vmwgfx_drv.c        | 129 ++--
 drivers/gpu/drm/vmwgfx/vmwgfx_drv.h        |  49 +-
 drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c    |  14 +-
 drivers/gpu/drm/vmwgfx/vmwgfx_fb.c         | 831 ---------------------
 drivers/gpu/drm/vmwgfx/vmwgfx_hashtab.c    | 199 -----
 drivers/gpu/drm/vmwgfx/vmwgfx_hashtab.h    |  83 --
 drivers/gpu/drm/vmwgfx/vmwgfx_kms.c        | 639 ++++++++--------
 drivers/gpu/drm/vmwgfx/vmwgfx_kms.h        |  31 +-
 drivers/gpu/drm/vmwgfx/vmwgfx_ldu.c        |   8 -
 drivers/gpu/drm/vmwgfx/vmwgfx_mksstat.h    |   2 +
 drivers/gpu/drm/vmwgfx/vmwgfx_msg.c        |  55 +-
 drivers/gpu/drm/vmwgfx/vmwgfx_scrn.c       |  31 +-
 drivers/gpu/drm/vmwgfx/vmwgfx_stdu.c       |  26 -
 drivers/gpu/drm/vmwgfx/vmwgfx_validation.c |  55 +-
 drivers/gpu/drm/vmwgfx/vmwgfx_validation.h |  26 +-
 23 files changed, 650 insertions(+), 1800 deletions(-)
 delete mode 100644 drivers/gpu/drm/vmwgfx/vmwgfx_fb.c
 delete mode 100644 drivers/gpu/drm/vmwgfx/vmwgfx_hashtab.c
 delete mode 100644 drivers/gpu/drm/vmwgfx/vmwgfx_hashtab.h

-- 
2.34.1

[PATCH v2 01/16] drm/vmwgfx: Write the driver id registers

[Zack Rusin]

From: Zack Rusin <zackr@vmware.com>

Driver id registers are a new mechanism in the svga device to hint to the
device which driver is running. This should not change device behavior
in any way, but might be convenient to work-around specific bugs
in guest drivers.

Signed-off-by: Zack Rusin <zackr@vmware.com>
Reviewed-by: Martin Krastev <krastevm@vmware.com>
Reviewed-by: Maaz Mombasawala <mombasawalam@vmware.com>
---
 drivers/gpu/drm/vmwgfx/vmwgfx_drv.c | 43 +++++++++++++++++++++++------
 1 file changed, 34 insertions(+), 9 deletions(-)

diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c
index d7bd5eb1d3ac..45028e25d490 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c
@@ -25,10 +25,13 @@
  *
  **************************************************************************/
 
-#include <linux/dma-mapping.h>
-#include <linux/module.h>
-#include <linux/pci.h>
-#include <linux/cc_platform.h>
+
+#include "vmwgfx_drv.h"
+
+#include "vmwgfx_devcaps.h"
+#include "vmwgfx_mksstat.h"
+#include "vmwgfx_binding.h"
+#include "ttm_object.h"
 
 #include <drm/drm_aperture.h>
 #include <drm/drm_drv.h>
@@ -41,11 +44,11 @@
 #include <drm/ttm/ttm_placement.h>
 #include <generated/utsrelease.h>
 
-#include "ttm_object.h"
-#include "vmwgfx_binding.h"
-#include "vmwgfx_devcaps.h"
-#include "vmwgfx_drv.h"
-#include "vmwgfx_mksstat.h"
+#include <linux/cc_platform.h>
+#include <linux/dma-mapping.h>
+#include <linux/module.h>
+#include <linux/pci.h>
+#include <linux/version.h>
 
 #define VMWGFX_DRIVER_DESC "Linux drm driver for VMware graphics devices"
 
@@ -806,6 +809,27 @@ static int vmw_detect_version(struct vmw_private *dev)
 	return 0;
 }
 
+static void vmw_write_driver_id(struct vmw_private *dev)
+{
+	if ((dev->capabilities2 & SVGA_CAP2_DX2) != 0) {
+		vmw_write(dev,  SVGA_REG_GUEST_DRIVER_ID,
+			  SVGA_REG_GUEST_DRIVER_ID_LINUX);
+
+		vmw_write(dev, SVGA_REG_GUEST_DRIVER_VERSION1,
+			  LINUX_VERSION_MAJOR << 24 |
+			  LINUX_VERSION_PATCHLEVEL << 16 |
+			  LINUX_VERSION_SUBLEVEL);
+		vmw_write(dev, SVGA_REG_GUEST_DRIVER_VERSION2,
+			  VMWGFX_DRIVER_MAJOR << 24 |
+			  VMWGFX_DRIVER_MINOR << 16 |
+			  VMWGFX_DRIVER_PATCHLEVEL);
+		vmw_write(dev, SVGA_REG_GUEST_DRIVER_VERSION3, 0);
+
+		vmw_write(dev, SVGA_REG_GUEST_DRIVER_ID,
+			  SVGA_REG_GUEST_DRIVER_ID_SUBMIT);
+	}
+}
+
 static int vmw_driver_load(struct vmw_private *dev_priv, u32 pci_id)
 {
 	int ret;
@@ -1091,6 +1115,7 @@ static int vmw_driver_load(struct vmw_private *dev_priv, u32 pci_id)
 	vmw_host_printf("vmwgfx: Module Version: %d.%d.%d (kernel: %s)",
 			VMWGFX_DRIVER_MAJOR, VMWGFX_DRIVER_MINOR,
 			VMWGFX_DRIVER_PATCHLEVEL, UTS_RELEASE);
+	vmw_write_driver_id(dev_priv);
 
 	if (dev_priv->enable_fb) {
 		vmw_fifo_resource_inc(dev_priv);
-- 
2.34.1

[PATCH v2 02/16] drm/vmwgfx: Fix frame-size warning in vmw_mksstat_add_ioctl

[Zack Rusin]

From: Martin Krastev <krastevm@vmware.com>

Function vmw_mksstat_add_ioctl allocates three big arrays on stack.
That triggers frame-size [-Wframe-larger-than=] warning. Refactor
that function to use kmalloc_array instead.

Signed-off-by: Martin Krastev <krastevm@vmware.com>
Reviewed-by: Zack Rusin <zackr@vmware.com>
Reviewed-by: Maaz Mombasawala <mombasawalam@vmware.com>
Signed-off-by: Zack Rusin <zackr@vmware.com>
---
 drivers/gpu/drm/vmwgfx/vmwgfx_msg.c | 39 ++++++++++++++++++++---------
 1 file changed, 27 insertions(+), 12 deletions(-)

diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_msg.c b/drivers/gpu/drm/vmwgfx/vmwgfx_msg.c
index 089046fa21be..a6cea35eaa01 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_msg.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_msg.c
@@ -1023,10 +1023,11 @@ int vmw_mksstat_add_ioctl(struct drm_device *dev, void *data,
 	long nr_pinned_stat;
 	long nr_pinned_info;
 	long nr_pinned_strs;
-	struct page *pages_stat[ARRAY_SIZE(pdesc->statPPNs)];
-	struct page *pages_info[ARRAY_SIZE(pdesc->infoPPNs)];
-	struct page *pages_strs[ARRAY_SIZE(pdesc->strsPPNs)];
+	struct page **pages_stat = NULL;
+	struct page **pages_info = NULL;
+	struct page **pages_strs = NULL;
 	size_t i, slot;
+	int ret_err = -ENOMEM;
 
 	arg->id = -1;
 
@@ -1054,13 +1055,23 @@ int vmw_mksstat_add_ioctl(struct drm_device *dev, void *data,
 
 	BUG_ON(dev_priv->mksstat_user_pages[slot]);
 
+	/* Allocate statically-sized temp arrays for pages -- too big to keep in frame */
+	pages_stat = (struct page **)kmalloc_array(
+		ARRAY_SIZE(pdesc->statPPNs) +
+		ARRAY_SIZE(pdesc->infoPPNs) +
+		ARRAY_SIZE(pdesc->strsPPNs), sizeof(*pages_stat), GFP_KERNEL);
+
+	if (!pages_stat)
+		goto err_nomem;
+
+	pages_info = pages_stat + ARRAY_SIZE(pdesc->statPPNs);
+	pages_strs = pages_info + ARRAY_SIZE(pdesc->infoPPNs);
+
 	/* Allocate a page for the instance descriptor */
 	page = alloc_page(GFP_KERNEL | __GFP_ZERO);
 
-	if (!page) {
-		atomic_set(&dev_priv->mksstat_user_pids[slot], 0);
-		return -ENOMEM;
-	}
+	if (!page)
+		goto err_nomem;
 
 	/* Set up the instance descriptor */
 	pdesc = page_address(page);
@@ -1075,9 +1086,8 @@ int vmw_mksstat_add_ioctl(struct drm_device *dev, void *data,
 		ARRAY_SIZE(pdesc->description) - 1);
 
 	if (desc_len < 0) {
-		atomic_set(&dev_priv->mksstat_user_pids[slot], 0);
-		__free_page(page);
-		return -EFAULT;
+		ret_err = -EFAULT;
+		goto err_nomem;
 	}
 
 	reset_ppn_array(pdesc->statPPNs, ARRAY_SIZE(pdesc->statPPNs));
@@ -1118,6 +1128,7 @@ int vmw_mksstat_add_ioctl(struct drm_device *dev, void *data,
 
 	DRM_DEV_INFO(dev->dev, "pid=%d arg.description='%.*s' id=%zu\n", current->pid, (int)desc_len, pdesc->description, slot);
 
+	kfree(pages_stat);
 	return 0;
 
 err_pin_strs:
@@ -1132,9 +1143,13 @@ int vmw_mksstat_add_ioctl(struct drm_device *dev, void *data,
 	if (nr_pinned_stat > 0)
 		unpin_user_pages(pages_stat, nr_pinned_stat);
 
+err_nomem:
 	atomic_set(&dev_priv->mksstat_user_pids[slot], 0);
-	__free_page(page);
-	return -ENOMEM;
+	if (page)
+		__free_page(page);
+	kfree(pages_stat);
+
+	return ret_err;
 }
 
 /**
-- 
2.34.1

[PATCH v2 03/16] drm/vmwgfx: Refactor resource manager's hashtable to use linux/hashtable implementation.

[Zack Rusin]

From: Maaz Mombasawala <mombasawalam@vmware.com>

Vmwgfx's hashtab implementation needs to be replaced with linux/hashtable
to reduce maintenance burden.
Refactor cmdbuf resource manager to use linux/hashtable.h implementation
as part of this effort.

Signed-off-by: Maaz Mombasawala <mombasawalam@vmware.com>
Reviewed-by: Zack Rusin <zackr@vmware.com>
Reviewed-by: Martin Krastev <krastevm@vmware.com>
Signed-off-by: Zack Rusin <zackr@vmware.com>
---
 drivers/gpu/drm/vmwgfx/vmwgfx_cmdbuf_res.c | 62 +++++++++-------------
 1 file changed, 26 insertions(+), 36 deletions(-)

diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_cmdbuf_res.c b/drivers/gpu/drm/vmwgfx/vmwgfx_cmdbuf_res.c
index 82ef58ccdd42..142aef686fcd 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_cmdbuf_res.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_cmdbuf_res.c
@@ -1,7 +1,7 @@
 // SPDX-License-Identifier: GPL-2.0 OR MIT
 /**************************************************************************
  *
- * Copyright 2014-2015 VMware, Inc., Palo Alto, CA., USA
+ * Copyright 2014-2022 VMware, Inc., Palo Alto, CA., USA
  *
  * Permission is hereby granted, free of charge, to any person obtaining a
  * copy of this software and associated documentation files (the
@@ -28,6 +28,8 @@
 #include "vmwgfx_drv.h"
 #include "vmwgfx_resource_priv.h"
 
+#include <linux/hashtable.h>
+
 #define VMW_CMDBUF_RES_MAN_HT_ORDER 12
 
 /**
@@ -59,7 +61,7 @@ struct vmw_cmdbuf_res {
  * @resources and @list are protected by the cmdbuf mutex for now.
  */
 struct vmw_cmdbuf_res_manager {
-	struct vmwgfx_open_hash resources;
+	DECLARE_HASHTABLE(resources, VMW_CMDBUF_RES_MAN_HT_ORDER);
 	struct list_head list;
 	struct vmw_private *dev_priv;
 };
@@ -82,14 +84,13 @@ vmw_cmdbuf_res_lookup(struct vmw_cmdbuf_res_manager *man,
 		      u32 user_key)
 {
 	struct vmwgfx_hash_item *hash;
-	int ret;
 	unsigned long key = user_key | (res_type << 24);
 
-	ret = vmwgfx_ht_find_item(&man->resources, key, &hash);
-	if (unlikely(ret != 0))
-		return ERR_PTR(ret);
-
-	return drm_hash_entry(hash, struct vmw_cmdbuf_res, hash)->res;
+	hash_for_each_possible_rcu(man->resources, hash, head, key) {
+		if (hash->key == key)
+			return drm_hash_entry(hash, struct vmw_cmdbuf_res, hash)->res;
+	}
+	return ERR_PTR(-EINVAL);
 }
 
 /**
@@ -105,7 +106,7 @@ static void vmw_cmdbuf_res_free(struct vmw_cmdbuf_res_manager *man,
 				struct vmw_cmdbuf_res *entry)
 {
 	list_del(&entry->head);
-	WARN_ON(vmwgfx_ht_remove_item(&man->resources, &entry->hash));
+	hash_del_rcu(&entry->hash.head);
 	vmw_resource_unreference(&entry->res);
 	kfree(entry);
 }
@@ -159,7 +160,6 @@ void vmw_cmdbuf_res_commit(struct list_head *list)
 void vmw_cmdbuf_res_revert(struct list_head *list)
 {
 	struct vmw_cmdbuf_res *entry, *next;
-	int ret;
 
 	list_for_each_entry_safe(entry, next, list, head) {
 		switch (entry->state) {
@@ -167,8 +167,8 @@ void vmw_cmdbuf_res_revert(struct list_head *list)
 			vmw_cmdbuf_res_free(entry->man, entry);
 			break;
 		case VMW_CMDBUF_RES_DEL:
-			ret = vmwgfx_ht_insert_item(&entry->man->resources, &entry->hash);
-			BUG_ON(ret);
+			hash_add_rcu(entry->man->resources, &entry->hash.head,
+						entry->hash.key);
 			list_move_tail(&entry->head, &entry->man->list);
 			entry->state = VMW_CMDBUF_RES_COMMITTED;
 			break;
@@ -199,26 +199,20 @@ int vmw_cmdbuf_res_add(struct vmw_cmdbuf_res_manager *man,
 		       struct list_head *list)
 {
 	struct vmw_cmdbuf_res *cres;
-	int ret;
 
 	cres = kzalloc(sizeof(*cres), GFP_KERNEL);
 	if (unlikely(!cres))
 		return -ENOMEM;
 
 	cres->hash.key = user_key | (res_type << 24);
-	ret = vmwgfx_ht_insert_item(&man->resources, &cres->hash);
-	if (unlikely(ret != 0)) {
-		kfree(cres);
-		goto out_invalid_key;
-	}
+	hash_add_rcu(man->resources, &cres->hash.head, cres->hash.key);
 
 	cres->state = VMW_CMDBUF_RES_ADD;
 	cres->res = vmw_resource_reference(res);
 	cres->man = man;
 	list_add_tail(&cres->head, list);
 
-out_invalid_key:
-	return ret;
+	return 0;
 }
 
 /**
@@ -243,24 +237,26 @@ int vmw_cmdbuf_res_remove(struct vmw_cmdbuf_res_manager *man,
 			  struct list_head *list,
 			  struct vmw_resource **res_p)
 {
-	struct vmw_cmdbuf_res *entry;
+	struct vmw_cmdbuf_res *entry = NULL;
 	struct vmwgfx_hash_item *hash;
-	int ret;
+	unsigned long key = user_key | (res_type << 24);
 
-	ret = vmwgfx_ht_find_item(&man->resources, user_key | (res_type << 24),
-			       &hash);
-	if (likely(ret != 0))
+	hash_for_each_possible_rcu(man->resources, hash, head, key) {
+		if (hash->key == key) {
+			entry = drm_hash_entry(hash, struct vmw_cmdbuf_res, hash);
+			break;
+		}
+	}
+	if (unlikely(!entry))
 		return -EINVAL;
 
-	entry = drm_hash_entry(hash, struct vmw_cmdbuf_res, hash);
-
 	switch (entry->state) {
 	case VMW_CMDBUF_RES_ADD:
 		vmw_cmdbuf_res_free(man, entry);
 		*res_p = NULL;
 		break;
 	case VMW_CMDBUF_RES_COMMITTED:
-		(void) vmwgfx_ht_remove_item(&man->resources, &entry->hash);
+		hash_del_rcu(&entry->hash.head);
 		list_del(&entry->head);
 		entry->state = VMW_CMDBUF_RES_DEL;
 		list_add_tail(&entry->head, list);
@@ -287,7 +283,6 @@ struct vmw_cmdbuf_res_manager *
 vmw_cmdbuf_res_man_create(struct vmw_private *dev_priv)
 {
 	struct vmw_cmdbuf_res_manager *man;
-	int ret;
 
 	man = kzalloc(sizeof(*man), GFP_KERNEL);
 	if (!man)
@@ -295,12 +290,8 @@ vmw_cmdbuf_res_man_create(struct vmw_private *dev_priv)
 
 	man->dev_priv = dev_priv;
 	INIT_LIST_HEAD(&man->list);
-	ret = vmwgfx_ht_create(&man->resources, VMW_CMDBUF_RES_MAN_HT_ORDER);
-	if (ret == 0)
-		return man;
-
-	kfree(man);
-	return ERR_PTR(ret);
+	hash_init(man->resources);
+	return man;
 }
 
 /**
@@ -320,7 +311,6 @@ void vmw_cmdbuf_res_man_destroy(struct vmw_cmdbuf_res_manager *man)
 	list_for_each_entry_safe(entry, next, &man->list, head)
 		vmw_cmdbuf_res_free(man, entry);
 
-	vmwgfx_ht_remove(&man->resources);
 	kfree(man);
 }
 
-- 
2.34.1

[PATCH v2 04/16] drm/vmwgfx: Remove ttm object hashtable

[Zack Rusin]

From: Maaz Mombasawala <mombasawalam@vmware.com>

The object_hash hashtable for ttm objects is not being used.
Remove it and perform refactoring in ttm_object init function.

Signed-off-by: Maaz Mombasawala <mombasawalam@vmware.com>
Reviewed-by: Zack Rusin <zackr@vmware.com>
Reviewed-by: Martin Krastev <krastevm@vmware.com>
Signed-off-by: Zack Rusin <zackr@vmware.com>
---
 drivers/gpu/drm/vmwgfx/ttm_object.c | 24 ++++++------------------
 drivers/gpu/drm/vmwgfx/ttm_object.h |  6 ++----
 drivers/gpu/drm/vmwgfx/vmwgfx_drv.c |  2 +-
 3 files changed, 9 insertions(+), 23 deletions(-)

diff --git a/drivers/gpu/drm/vmwgfx/ttm_object.c b/drivers/gpu/drm/vmwgfx/ttm_object.c
index 26a55fef1ab5..9546b121bc22 100644
--- a/drivers/gpu/drm/vmwgfx/ttm_object.c
+++ b/drivers/gpu/drm/vmwgfx/ttm_object.c
@@ -1,7 +1,7 @@
 /* SPDX-License-Identifier: GPL-2.0 OR MIT */
 /**************************************************************************
  *
- * Copyright (c) 2009-2013 VMware, Inc., Palo Alto, CA., USA
+ * Copyright (c) 2009-2022 VMware, Inc., Palo Alto, CA., USA
  * All Rights Reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a
@@ -44,13 +44,14 @@
 
 #define pr_fmt(fmt) "[TTM] " fmt
 
+#include "ttm_object.h"
+#include "vmwgfx_drv.h"
+
 #include <linux/list.h>
 #include <linux/spinlock.h>
 #include <linux/slab.h>
 #include <linux/atomic.h>
 #include <linux/module.h>
-#include "ttm_object.h"
-#include "vmwgfx_drv.h"
 
 MODULE_IMPORT_NS(DMA_BUF);
 
@@ -81,9 +82,7 @@ struct ttm_object_file {
 /*
  * struct ttm_object_device
  *
- * @object_lock: lock that protects the object_hash hash table.
- *
- * @object_hash: hash table for fast lookup of object global names.
+ * @object_lock: lock that protects idr.
  *
  * @object_count: Per device object count.
  *
@@ -92,7 +91,6 @@ struct ttm_object_file {
 
 struct ttm_object_device {
 	spinlock_t object_lock;
-	struct vmwgfx_open_hash object_hash;
 	atomic_t object_count;
 	struct dma_buf_ops ops;
 	void (*dmabuf_release)(struct dma_buf *dma_buf);
@@ -449,20 +447,15 @@ struct ttm_object_file *ttm_object_file_init(struct ttm_object_device *tdev,
 }
 
 struct ttm_object_device *
-ttm_object_device_init(unsigned int hash_order,
-		       const struct dma_buf_ops *ops)
+ttm_object_device_init(const struct dma_buf_ops *ops)
 {
 	struct ttm_object_device *tdev = kmalloc(sizeof(*tdev), GFP_KERNEL);
-	int ret;
 
 	if (unlikely(tdev == NULL))
 		return NULL;
 
 	spin_lock_init(&tdev->object_lock);
 	atomic_set(&tdev->object_count, 0);
-	ret = vmwgfx_ht_create(&tdev->object_hash, hash_order);
-	if (ret != 0)
-		goto out_no_object_hash;
 
 	/*
 	 * Our base is at VMWGFX_NUM_MOB + 1 because we want to create
@@ -477,10 +470,6 @@ ttm_object_device_init(unsigned int hash_order,
 	tdev->dmabuf_release = tdev->ops.release;
 	tdev->ops.release = ttm_prime_dmabuf_release;
 	return tdev;
-
-out_no_object_hash:
-	kfree(tdev);
-	return NULL;
 }
 
 void ttm_object_device_release(struct ttm_object_device **p_tdev)
@@ -491,7 +480,6 @@ void ttm_object_device_release(struct ttm_object_device **p_tdev)
 
 	WARN_ON_ONCE(!idr_is_empty(&tdev->idr));
 	idr_destroy(&tdev->idr);
-	vmwgfx_ht_remove(&tdev->object_hash);
 
 	kfree(tdev);
 }
diff --git a/drivers/gpu/drm/vmwgfx/ttm_object.h b/drivers/gpu/drm/vmwgfx/ttm_object.h
index 1a2fa0f83f5f..6870f951b677 100644
--- a/drivers/gpu/drm/vmwgfx/ttm_object.h
+++ b/drivers/gpu/drm/vmwgfx/ttm_object.h
@@ -1,6 +1,6 @@
 /**************************************************************************
  *
- * Copyright (c) 2006-2009 VMware, Inc., Palo Alto, CA., USA
+ * Copyright (c) 2006-2022 VMware, Inc., Palo Alto, CA., USA
  * All Rights Reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a
@@ -262,7 +262,6 @@ extern void ttm_object_file_release(struct ttm_object_file **p_tfile);
 /**
  * ttm_object device init - initialize a struct ttm_object_device
  *
- * @hash_order: Order of hash table used to hash the base objects.
  * @ops: DMA buf ops for prime objects of this device.
  *
  * This function is typically called on device initialization to prepare
@@ -270,8 +269,7 @@ extern void ttm_object_file_release(struct ttm_object_file **p_tfile);
  */
 
 extern struct ttm_object_device *
-ttm_object_device_init(unsigned int hash_order,
-		       const struct dma_buf_ops *ops);
+ttm_object_device_init(const struct dma_buf_ops *ops);
 
 /**
  * ttm_object_device_release - release data held by a ttm_object_device
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c
index 45028e25d490..13b90273eb77 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c
@@ -994,7 +994,7 @@ static int vmw_driver_load(struct vmw_private *dev_priv, u32 pci_id)
 		goto out_err0;
 	}
 
-	dev_priv->tdev = ttm_object_device_init(12, &vmw_prime_dmabuf_ops);
+	dev_priv->tdev = ttm_object_device_init(&vmw_prime_dmabuf_ops);
 
 	if (unlikely(dev_priv->tdev == NULL)) {
 		drm_err(&dev_priv->drm,
-- 
2.34.1

[PATCH v2 05/16] drm/vmwgfx: Refactor resource validation hashtable to use linux/hashtable implementation.

[Zack Rusin]

From: Maaz Mombasawala <mombasawalam@vmware.com>

Vmwgfx's hashtab implementation needs to be replaced with linux/hashtable
to reduce maintenence burden.
As part of this effort, refactor the res_ht hashtable used for resource
validation during execbuf execution to use linux/hashtable implementation.
This also refactors vmw_validation_context to use vmw_sw_context as the
container for the hashtable, whereas before it used a vmwgfx_open_hash
directly. This makes vmw_validation_context less generic, but there is
no functional change since res_ht is the only instance where validation
context used a hashtable in vmwgfx driver.

Signed-off-by: Maaz Mombasawala <mombasawalam@vmware.com>
Reviewed-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Signed-off-by: Zack Rusin <zackr@vmware.com>
---
 drivers/gpu/drm/vmwgfx/vmwgfx_drv.c        | 24 ++++++++--
 drivers/gpu/drm/vmwgfx/vmwgfx_drv.h        |  5 +-
 drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c    | 14 ++----
 drivers/gpu/drm/vmwgfx/vmwgfx_validation.c | 55 +++++++++++-----------
 drivers/gpu/drm/vmwgfx/vmwgfx_validation.h | 26 +++-------
 5 files changed, 58 insertions(+), 66 deletions(-)

diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c
index 13b90273eb77..8d77e79bd904 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c
@@ -830,6 +830,22 @@ static void vmw_write_driver_id(struct vmw_private *dev)
 	}
 }
 
+static void vmw_sw_context_init(struct vmw_private *dev_priv)
+{
+	struct vmw_sw_context *sw_context = &dev_priv->ctx;
+
+	hash_init(sw_context->res_ht);
+}
+
+static void vmw_sw_context_fini(struct vmw_private *dev_priv)
+{
+	struct vmw_sw_context *sw_context = &dev_priv->ctx;
+
+	vfree(sw_context->cmd_bounce);
+	if (sw_context->staged_bindings)
+		vmw_binding_state_free(sw_context->staged_bindings);
+}
+
 static int vmw_driver_load(struct vmw_private *dev_priv, u32 pci_id)
 {
 	int ret;
@@ -839,6 +855,8 @@ static int vmw_driver_load(struct vmw_private *dev_priv, u32 pci_id)
 
 	dev_priv->drm.dev_private = dev_priv;
 
+	vmw_sw_context_init(dev_priv);
+
 	mutex_init(&dev_priv->cmdbuf_mutex);
 	mutex_init(&dev_priv->binding_mutex);
 	spin_lock_init(&dev_priv->resource_lock);
@@ -1168,9 +1186,7 @@ static void vmw_driver_unload(struct drm_device *dev)
 
 	unregister_pm_notifier(&dev_priv->pm_nb);
 
-	if (dev_priv->ctx.res_ht_initialized)
-		vmwgfx_ht_remove(&dev_priv->ctx.res_ht);
-	vfree(dev_priv->ctx.cmd_bounce);
+	vmw_sw_context_fini(dev_priv);
 	if (dev_priv->enable_fb) {
 		vmw_fb_off(dev_priv);
 		vmw_fb_close(dev_priv);
@@ -1198,8 +1214,6 @@ static void vmw_driver_unload(struct drm_device *dev)
 		vmw_irq_uninstall(&dev_priv->drm);
 
 	ttm_object_device_release(&dev_priv->tdev);
-	if (dev_priv->ctx.staged_bindings)
-		vmw_binding_state_free(dev_priv->ctx.staged_bindings);
 
 	for (i = vmw_res_context; i < vmw_res_max; ++i)
 		idr_destroy(&dev_priv->res_idr[i]);
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h
index 09e2d738aa87..d87aeedb78d0 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h
@@ -30,6 +30,7 @@
 
 #include <linux/suspend.h>
 #include <linux/sync_file.h>
+#include <linux/hashtable.h>
 
 #include <drm/drm_auth.h>
 #include <drm/drm_device.h>
@@ -93,6 +94,7 @@
 #define VMW_RES_STREAM ttm_driver_type2
 #define VMW_RES_FENCE ttm_driver_type3
 #define VMW_RES_SHADER ttm_driver_type4
+#define VMW_RES_HT_ORDER 12
 
 #define MKSSTAT_CAPACITY_LOG2 5U
 #define MKSSTAT_CAPACITY (1U << MKSSTAT_CAPACITY_LOG2)
@@ -425,8 +427,7 @@ struct vmw_ctx_validation_info;
  * @ctx: The validation context
  */
 struct vmw_sw_context{
-	struct vmwgfx_open_hash res_ht;
-	bool res_ht_initialized;
+	DECLARE_HASHTABLE(res_ht, VMW_RES_HT_ORDER);
 	bool kernel;
 	struct vmw_fpriv *fp;
 	struct drm_file *filp;
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c b/drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c
index f085dbd4736d..c943ab801ca7 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c
@@ -1,7 +1,7 @@
 // SPDX-License-Identifier: GPL-2.0 OR MIT
 /**************************************************************************
  *
- * Copyright 2009 - 2015 VMware, Inc., Palo Alto, CA., USA
+ * Copyright 2009 - 2022 VMware, Inc., Palo Alto, CA., USA
  *
  * Permission is hereby granted, free of charge, to any person obtaining a
  * copy of this software and associated documentation files (the
@@ -25,6 +25,7 @@
  *
  **************************************************************************/
 #include <linux/sync_file.h>
+#include <linux/hashtable.h>
 
 #include "vmwgfx_drv.h"
 #include "vmwgfx_reg.h"
@@ -34,7 +35,6 @@
 #include "vmwgfx_binding.h"
 #include "vmwgfx_mksstat.h"
 
-#define VMW_RES_HT_ORDER 12
 
 /*
  * Helper macro to get dx_ctx_node if available otherwise print an error
@@ -4101,7 +4101,7 @@ int vmw_execbuf_process(struct drm_file *file_priv,
 	int ret;
 	int32_t out_fence_fd = -1;
 	struct sync_file *sync_file = NULL;
-	DECLARE_VAL_CONTEXT(val_ctx, &sw_context->res_ht, 1);
+	DECLARE_VAL_CONTEXT(val_ctx, sw_context, 1);
 
 	if (flags & DRM_VMW_EXECBUF_FLAG_EXPORT_FENCE_FD) {
 		out_fence_fd = get_unused_fd_flags(O_CLOEXEC);
@@ -4164,14 +4164,6 @@ int vmw_execbuf_process(struct drm_file *file_priv,
 	if (sw_context->staged_bindings)
 		vmw_binding_state_reset(sw_context->staged_bindings);
 
-	if (!sw_context->res_ht_initialized) {
-		ret = vmwgfx_ht_create(&sw_context->res_ht, VMW_RES_HT_ORDER);
-		if (unlikely(ret != 0))
-			goto out_unlock;
-
-		sw_context->res_ht_initialized = true;
-	}
-
 	INIT_LIST_HEAD(&sw_context->staged_cmd_res);
 	sw_context->ctx = &val_ctx;
 	ret = vmw_execbuf_tie_context(dev_priv, sw_context, dx_context_handle);
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_validation.c b/drivers/gpu/drm/vmwgfx/vmwgfx_validation.c
index f46891012be3..f5c4a40fb16d 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_validation.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_validation.c
@@ -1,7 +1,7 @@
 // SPDX-License-Identifier: GPL-2.0 OR MIT
 /**************************************************************************
  *
- * Copyright © 2018 VMware, Inc., Palo Alto, CA., USA
+ * Copyright © 2018 - 2022 VMware, Inc., Palo Alto, CA., USA
  * All Rights Reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a
@@ -180,11 +180,16 @@ vmw_validation_find_bo_dup(struct vmw_validation_context *ctx,
 	if (!ctx->merge_dups)
 		return NULL;
 
-	if (ctx->ht) {
+	if (ctx->sw_context) {
 		struct vmwgfx_hash_item *hash;
+		unsigned long key = (unsigned long) vbo;
 
-		if (!vmwgfx_ht_find_item(ctx->ht, (unsigned long) vbo, &hash))
-			bo_node = container_of(hash, typeof(*bo_node), hash);
+		hash_for_each_possible_rcu(ctx->sw_context->res_ht, hash, head, key) {
+			if (hash->key == key) {
+				bo_node = container_of(hash, typeof(*bo_node), hash);
+				break;
+			}
+		}
 	} else {
 		struct  vmw_validation_bo_node *entry;
 
@@ -217,11 +222,16 @@ vmw_validation_find_res_dup(struct vmw_validation_context *ctx,
 	if (!ctx->merge_dups)
 		return NULL;
 
-	if (ctx->ht) {
+	if (ctx->sw_context) {
 		struct vmwgfx_hash_item *hash;
+		unsigned long key = (unsigned long) res;
 
-		if (!vmwgfx_ht_find_item(ctx->ht, (unsigned long) res, &hash))
-			res_node = container_of(hash, typeof(*res_node), hash);
+		hash_for_each_possible_rcu(ctx->sw_context->res_ht, hash, head, key) {
+			if (hash->key == key) {
+				res_node = container_of(hash, typeof(*res_node), hash);
+				break;
+			}
+		}
 	} else {
 		struct  vmw_validation_res_node *entry;
 
@@ -269,20 +279,15 @@ int vmw_validation_add_bo(struct vmw_validation_context *ctx,
 		}
 	} else {
 		struct ttm_validate_buffer *val_buf;
-		int ret;
 
 		bo_node = vmw_validation_mem_alloc(ctx, sizeof(*bo_node));
 		if (!bo_node)
 			return -ENOMEM;
 
-		if (ctx->ht) {
+		if (ctx->sw_context) {
 			bo_node->hash.key = (unsigned long) vbo;
-			ret = vmwgfx_ht_insert_item(ctx->ht, &bo_node->hash);
-			if (ret) {
-				DRM_ERROR("Failed to initialize a buffer "
-					  "validation entry.\n");
-				return ret;
-			}
+			hash_add_rcu(ctx->sw_context->res_ht, &bo_node->hash.head,
+				bo_node->hash.key);
 		}
 		val_buf = &bo_node->base;
 		val_buf->bo = ttm_bo_get_unless_zero(&vbo->base);
@@ -316,7 +321,6 @@ int vmw_validation_add_resource(struct vmw_validation_context *ctx,
 				bool *first_usage)
 {
 	struct vmw_validation_res_node *node;
-	int ret;
 
 	node = vmw_validation_find_res_dup(ctx, res);
 	if (node) {
@@ -330,14 +334,9 @@ int vmw_validation_add_resource(struct vmw_validation_context *ctx,
 		return -ENOMEM;
 	}
 
-	if (ctx->ht) {
+	if (ctx->sw_context) {
 		node->hash.key = (unsigned long) res;
-		ret = vmwgfx_ht_insert_item(ctx->ht, &node->hash);
-		if (ret) {
-			DRM_ERROR("Failed to initialize a resource validation "
-				  "entry.\n");
-			return ret;
-		}
+		hash_add_rcu(ctx->sw_context->res_ht, &node->hash.head, node->hash.key);
 	}
 	node->res = vmw_resource_reference_unless_doomed(res);
 	if (!node->res)
@@ -681,19 +680,19 @@ void vmw_validation_drop_ht(struct vmw_validation_context *ctx)
 	struct vmw_validation_bo_node *entry;
 	struct vmw_validation_res_node *val;
 
-	if (!ctx->ht)
+	if (!ctx->sw_context)
 		return;
 
 	list_for_each_entry(entry, &ctx->bo_list, base.head)
-		(void) vmwgfx_ht_remove_item(ctx->ht, &entry->hash);
+		hash_del_rcu(&entry->hash.head);
 
 	list_for_each_entry(val, &ctx->resource_list, head)
-		(void) vmwgfx_ht_remove_item(ctx->ht, &val->hash);
+		hash_del_rcu(&val->hash.head);
 
 	list_for_each_entry(val, &ctx->resource_ctx_list, head)
-		(void) vmwgfx_ht_remove_item(ctx->ht, &val->hash);
+		hash_del_rcu(&entry->hash.head);
 
-	ctx->ht = NULL;
+	ctx->sw_context = NULL;
 }
 
 /**
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_validation.h b/drivers/gpu/drm/vmwgfx/vmwgfx_validation.h
index f21df053882b..ab9ec226f433 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_validation.h
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_validation.h
@@ -1,7 +1,7 @@
 /* SPDX-License-Identifier: GPL-2.0 OR MIT */
 /**************************************************************************
  *
- * Copyright © 2018 VMware, Inc., Palo Alto, CA., USA
+ * Copyright © 2018 - 2022 VMware, Inc., Palo Alto, CA., USA
  * All Rights Reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a
@@ -29,12 +29,11 @@
 #define _VMWGFX_VALIDATION_H_
 
 #include <linux/list.h>
+#include <linux/hashtable.h>
 #include <linux/ww_mutex.h>
 
 #include <drm/ttm/ttm_execbuf_util.h>
 
-#include "vmwgfx_hashtab.h"
-
 #define VMW_RES_DIRTY_NONE 0
 #define VMW_RES_DIRTY_SET BIT(0)
 #define VMW_RES_DIRTY_CLEAR BIT(1)
@@ -59,7 +58,7 @@
  * @total_mem: Amount of reserved memory.
  */
 struct vmw_validation_context {
-	struct vmwgfx_open_hash *ht;
+	struct vmw_sw_context *sw_context;
 	struct list_head resource_list;
 	struct list_head resource_ctx_list;
 	struct list_head bo_list;
@@ -82,16 +81,16 @@ struct vmw_fence_obj;
 /**
  * DECLARE_VAL_CONTEXT - Declare a validation context with initialization
  * @_name: The name of the variable
- * @_ht: The hash table used to find dups or NULL if none
+ * @_sw_context: Contains the hash table used to find dups or NULL if none
  * @_merge_dups: Whether to merge duplicate buffer object- or resource
  * entries. If set to true, ideally a hash table pointer should be supplied
  * as well unless the number of resources and buffer objects per validation
  * is known to be very small
  */
 #endif
-#define DECLARE_VAL_CONTEXT(_name, _ht, _merge_dups)			\
+#define DECLARE_VAL_CONTEXT(_name, _sw_context, _merge_dups)		\
 	struct vmw_validation_context _name =				\
-	{ .ht = _ht,							\
+	{ .sw_context = _sw_context,					\
 	  .resource_list = LIST_HEAD_INIT((_name).resource_list),	\
 	  .resource_ctx_list = LIST_HEAD_INIT((_name).resource_ctx_list), \
 	  .bo_list = LIST_HEAD_INIT((_name).bo_list),			\
@@ -114,19 +113,6 @@ vmw_validation_has_bos(struct vmw_validation_context *ctx)
 	return !list_empty(&ctx->bo_list);
 }
 
-/**
- * vmw_validation_set_ht - Register a hash table for duplicate finding
- * @ctx: The validation context
- * @ht: Pointer to a hash table to use for duplicate finding
- * This function is intended to be used if the hash table wasn't
- * available at validation context declaration time
- */
-static inline void vmw_validation_set_ht(struct vmw_validation_context *ctx,
-					 struct vmwgfx_open_hash *ht)
-{
-	ctx->ht = ht;
-}
-
 /**
  * vmw_validation_bo_reserve - Reserve buffer objects registered with a
  * validation context
-- 
2.34.1

[PATCH v2 06/16] drm/vmwgfx: Clean up cursor mobs

[Zack Rusin]

From: Michael Banack <banackm@vmware.com>

Clean up the cursor mob path by moving ownership of the mobs into the
plane_state, and just leaving a cache of unused mobs in the plane
itself.

Signed-off-by: Michael Banack <banackm@vmware.com>
Signed-off-by: Zack Rusin <zackr@vmware.com>
---
 drivers/gpu/drm/vmwgfx/vmwgfx_kms.c | 441 ++++++++++++++++------------
 drivers/gpu/drm/vmwgfx/vmwgfx_kms.h |  19 +-
 2 files changed, 267 insertions(+), 193 deletions(-)

diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_kms.c b/drivers/gpu/drm/vmwgfx/vmwgfx_kms.c
index 214829c32ed8..07d55d610e4c 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_kms.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_kms.c
@@ -53,33 +53,33 @@ void vmw_du_cleanup(struct vmw_display_unit *du)
  */
 
 static void vmw_cursor_update_mob(struct vmw_private *dev_priv,
-				  struct ttm_buffer_object *bo,
-				  struct ttm_bo_kmap_obj *map,
+				  struct vmw_plane_state *vps,
 				  u32 *image, u32 width, u32 height,
 				  u32 hotspotX, u32 hotspotY);
+static int vmw_du_cursor_plane_unmap_cm(struct vmw_plane_state *vps);
 
 struct vmw_svga_fifo_cmd_define_cursor {
 	u32 cmd;
 	SVGAFifoCmdDefineAlphaCursor cursor;
 };
 
-static void vmw_cursor_update_image(struct vmw_private *dev_priv,
-				    struct ttm_buffer_object *cm_bo,
-				    struct ttm_bo_kmap_obj *cm_map,
-				    u32 *image, u32 width, u32 height,
-				    u32 hotspotX, u32 hotspotY)
+/**
+ * vmw_send_define_cursor_cmd - queue a define cursor command
+ * @dev_priv: the private driver struct
+ * @image: buffer which holds the cursor image
+ * @width: width of the mouse cursor image
+ * @height: height of the mouse cursor image
+ * @hotspotX: the horizontal position of mouse hotspot
+ * @hotspotY: the vertical position of mouse hotspot
+ */
+static void vmw_send_define_cursor_cmd(struct vmw_private *dev_priv,
+				       u32 *image, u32 width, u32 height,
+				       u32 hotspotX, u32 hotspotY)
 {
 	struct vmw_svga_fifo_cmd_define_cursor *cmd;
 	const u32 image_size = width * height * sizeof(*image);
 	const u32 cmd_size = sizeof(*cmd) + image_size;
 
-	if (cm_bo != NULL) {
-		vmw_cursor_update_mob(dev_priv, cm_bo, cm_map, image,
-				      width, height,
-				      hotspotX, hotspotY);
-		return;
-	}
-
 	/* Try to reserve fifocmd space and swallow any failures;
 	   such reservations cannot be left unconsumed for long
 	   under the risk of clogging other fifocmd users, so
@@ -104,12 +104,39 @@ static void vmw_cursor_update_image(struct vmw_private *dev_priv,
 	vmw_cmd_commit_flush(dev_priv, cmd_size);
 }
 
+/**
+ * vmw_cursor_update_image - update the cursor image on the provided plane
+ * @dev_priv: the private driver struct
+ * @vps: the plane state of the cursor plane
+ * @image: buffer which holds the cursor image
+ * @width: width of the mouse cursor image
+ * @height: height of the mouse cursor image
+ * @hotspotX: the horizontal position of mouse hotspot
+ * @hotspotY: the vertical position of mouse hotspot
+ */
+static void vmw_cursor_update_image(struct vmw_private *dev_priv,
+				    struct vmw_plane_state *vps,
+				    u32 *image, u32 width, u32 height,
+				    u32 hotspotX, u32 hotspotY)
+{
+	if (vps->cursor.bo != NULL)
+		vmw_cursor_update_mob(dev_priv, vps, image,
+				      width, height,
+				      hotspotX, hotspotY);
+	else
+		vmw_send_define_cursor_cmd(dev_priv, image, width, height,
+					   hotspotX, hotspotY);
+}
+
+
 /**
  * vmw_cursor_update_mob - Update cursor vis CursorMob mechanism
  *
+ * Called from inside vmw_du_cursor_plane_atomic_update to actually
+ * make the cursor-image live.
+ *
  * @dev_priv: device to work with
- * @bo: BO for the MOB
- * @map: kmap obj for the BO
+ * @vps: the plane state of the cursor plane
  * @image: cursor source data to fill the MOB with
  * @width: source data width
  * @height: source data height
@@ -117,8 +144,7 @@ static void vmw_cursor_update_image(struct vmw_private *dev_priv,
  * @hotspotY: cursor hotspot Y
  */
 static void vmw_cursor_update_mob(struct vmw_private *dev_priv,
-				  struct ttm_buffer_object *bo,
-				  struct ttm_bo_kmap_obj *map,
+				  struct vmw_plane_state *vps,
 				  u32 *image, u32 width, u32 height,
 				  u32 hotspotX, u32 hotspotY)
 {
@@ -127,11 +153,11 @@ static void vmw_cursor_update_mob(struct vmw_private *dev_priv,
 	const u32 image_size = width * height * sizeof(*image);
 	bool dummy;
 
-	BUG_ON(!image);
-
-	header = (SVGAGBCursorHeader *)ttm_kmap_obj_virtual(map, &dummy);
+	header = ttm_kmap_obj_virtual(&vps->cursor.map, &dummy);
 	alpha_header = &header->header.alphaHeader;
 
+	memset(header, 0, sizeof(*header));
+
 	header->type = SVGA_ALPHA_CURSOR;
 	header->sizeInBytes = image_size;
 
@@ -141,102 +167,116 @@ static void vmw_cursor_update_mob(struct vmw_private *dev_priv,
 	alpha_header->height = height;
 
 	memcpy(header + 1, image, image_size);
+	vmw_write(dev_priv, SVGA_REG_CURSOR_MOBID,
+		  vps->cursor.bo->resource->start);
+}
 
-	vmw_write(dev_priv, SVGA_REG_CURSOR_MOBID, bo->resource->start);
+static u32 vmw_du_cursor_mob_size(u32 w, u32 h)
+{
+	return w * h * sizeof(u32) + sizeof(SVGAGBCursorHeader);
 }
 
-void vmw_du_destroy_cursor_mob_array(struct vmw_cursor_plane *vcp)
+static void vmw_du_destroy_cursor_mob(struct ttm_buffer_object **bo)
 {
-	size_t i;
+	if (*bo == NULL)
+		return;
 
-	for (i = 0; i < ARRAY_SIZE(vcp->cursor_mob); i++) {
-		if (vcp->cursor_mob[i] != NULL) {
-			ttm_bo_unpin(vcp->cursor_mob[i]);
-			ttm_bo_put(vcp->cursor_mob[i]);
-			kfree(vcp->cursor_mob[i]);
-			vcp->cursor_mob[i] = NULL;
-		}
-	}
+	ttm_bo_unpin(*bo);
+	ttm_bo_put(*bo);
+	kfree(*bo);
+	*bo = NULL;
 }
 
-#define CURSOR_MOB_SIZE(dimension) \
-	((dimension) * (dimension) * sizeof(u32) + sizeof(SVGAGBCursorHeader))
-
-int vmw_du_create_cursor_mob_array(struct vmw_cursor_plane *cursor)
+static void vmw_du_put_cursor_mob(struct vmw_cursor_plane *vcp,
+				  struct vmw_plane_state *vps)
 {
-	struct vmw_private *dev_priv = cursor->base.dev->dev_private;
-	uint32_t cursor_max_dim, mob_max_size;
-	int ret = 0;
-	size_t i;
-
-	if (!dev_priv->has_mob || (dev_priv->capabilities2 & SVGA_CAP2_CURSOR_MOB) == 0)
-		return -ENOSYS;
+	u32 i;
 
-	mob_max_size = vmw_read(dev_priv, SVGA_REG_MOB_MAX_SIZE);
-	cursor_max_dim = vmw_read(dev_priv, SVGA_REG_CURSOR_MAX_DIMENSION);
+	if (vps->cursor.bo == NULL)
+		return;
 
-	if (CURSOR_MOB_SIZE(cursor_max_dim) > mob_max_size)
-		cursor_max_dim = 64; /* Mandatorily-supported cursor dimension */
+	vmw_du_cursor_plane_unmap_cm(vps);
 
-	for (i = 0; i < ARRAY_SIZE(cursor->cursor_mob); i++) {
-		struct ttm_buffer_object **const bo = &cursor->cursor_mob[i];
+	/* Look for a free slot to return this mob to the cache. */
+	for (i = 0; i < ARRAY_SIZE(vcp->cursor_mobs); i++) {
+		if (vcp->cursor_mobs[i] == NULL) {
+			vcp->cursor_mobs[i] = vps->cursor.bo;
+			vps->cursor.bo = NULL;
+			return;
+		}
+	}
 
-		ret = vmw_bo_create_kernel(dev_priv,
-			CURSOR_MOB_SIZE(cursor_max_dim),
-			&vmw_mob_placement, bo);
+	/* Cache is full: See if this mob is bigger than an existing mob. */
+	for (i = 0; i < ARRAY_SIZE(vcp->cursor_mobs); i++) {
+		if (vcp->cursor_mobs[i]->base.size <
+		    vps->cursor.bo->base.size) {
+			vmw_du_destroy_cursor_mob(&vcp->cursor_mobs[i]);
+			vcp->cursor_mobs[i] = vps->cursor.bo;
+			vps->cursor.bo = NULL;
+			return;
+		}
+	}
 
-		if (ret != 0)
-			goto teardown;
+	/* Destroy it if it's not worth caching. */
+	vmw_du_destroy_cursor_mob(&vps->cursor.bo);
+}
 
-		if ((*bo)->resource->mem_type != VMW_PL_MOB) {
-			DRM_ERROR("Obtained buffer object is not a MOB.\n");
-			ret = -ENOSYS;
-			goto teardown;
-		}
+static int vmw_du_get_cursor_mob(struct vmw_cursor_plane *vcp,
+				 struct vmw_plane_state *vps)
+{
+	struct vmw_private *dev_priv = vcp->base.dev->dev_private;
+	u32 size = vmw_du_cursor_mob_size(vps->base.crtc_w, vps->base.crtc_h);
+	u32 i;
+	u32 cursor_max_dim, mob_max_size;
+	int ret;
 
-		/* Fence the mob creation so we are guarateed to have the mob */
-		ret = ttm_bo_reserve(*bo, false, false, NULL);
+	if (!dev_priv->has_mob ||
+	    (dev_priv->capabilities2 & SVGA_CAP2_CURSOR_MOB) == 0)
+		return -EINVAL;
 
-		if (ret != 0)
-			goto teardown;
+	mob_max_size = vmw_read(dev_priv, SVGA_REG_MOB_MAX_SIZE);
+	cursor_max_dim = vmw_read(dev_priv, SVGA_REG_CURSOR_MAX_DIMENSION);
 
-		vmw_bo_fence_single(*bo, NULL);
+	if (size > mob_max_size || vps->base.crtc_w > cursor_max_dim ||
+	    vps->base.crtc_h > cursor_max_dim)
+		return -EINVAL;
 
-		ttm_bo_unreserve(*bo);
+	if (vps->cursor.bo != NULL) {
+		if (vps->cursor.bo->base.size >= size)
+			return 0;
+		vmw_du_put_cursor_mob(vcp, vps);
+	}
 
-		drm_info(&dev_priv->drm, "Using CursorMob mobid %lu, max dimension %u\n",
-			 (*bo)->resource->start, cursor_max_dim);
+	/* Look for an unused mob in the cache. */
+	for (i = 0; i < ARRAY_SIZE(vcp->cursor_mobs); i++) {
+		if (vcp->cursor_mobs[i] != NULL &&
+		    vcp->cursor_mobs[i]->base.size >= size) {
+			vps->cursor.bo = vcp->cursor_mobs[i];
+			vcp->cursor_mobs[i] = NULL;
+			return 0;
+		}
 	}
+	/* Create a new mob if we can't find an existing one. */
+	ret = vmw_bo_create_kernel(dev_priv, size, &vmw_mob_placement,
+				   &vps->cursor.bo);
+
+	if (ret != 0)
+		return ret;
+
+	/* Fence the mob creation so we are guarateed to have the mob */
+	ret = ttm_bo_reserve(vps->cursor.bo, false, false, NULL);
+	if (ret != 0)
+		goto teardown;
 
+	vmw_bo_fence_single(vps->cursor.bo, NULL);
+	ttm_bo_unreserve(vps->cursor.bo);
 	return 0;
 
 teardown:
-	vmw_du_destroy_cursor_mob_array(cursor);
-
+	vmw_du_destroy_cursor_mob(&vps->cursor.bo);
 	return ret;
 }
 
-#undef CURSOR_MOB_SIZE
-
-static void vmw_cursor_update_bo(struct vmw_private *dev_priv,
-				 struct ttm_buffer_object *cm_bo,
-				 struct ttm_bo_kmap_obj *cm_map,
-				 struct vmw_buffer_object *bo,
-				 u32 width, u32 height,
-				 u32 hotspotX, u32 hotspotY)
-{
-	void *virtual;
-	bool dummy;
-
-	virtual = ttm_kmap_obj_virtual(&bo->map, &dummy);
-	if (virtual) {
-		vmw_cursor_update_image(dev_priv, cm_bo, cm_map, virtual,
-					width, height,
-					hotspotX, hotspotY);
-		atomic_dec(&bo->base_mapped_count);
-	}
-}
-
 
 static void vmw_cursor_update_position(struct vmw_private *dev_priv,
 				       bool show, int x, int y)
@@ -391,11 +431,11 @@ void vmw_kms_cursor_post_execbuf(struct vmw_private *dev_priv)
 			continue;
 
 		du->cursor_age = du->cursor_surface->snooper.age;
-		vmw_cursor_update_image(dev_priv, NULL, NULL,
-					du->cursor_surface->snooper.image,
-					64, 64,
-					du->hotspot_x + du->core_hotspot_x,
-					du->hotspot_y + du->core_hotspot_y);
+		vmw_send_define_cursor_cmd(dev_priv,
+					   du->cursor_surface->snooper.image,
+					   64, 64,
+					   du->hotspot_x + du->core_hotspot_x,
+					   du->hotspot_y + du->core_hotspot_y);
 	}
 
 	mutex_unlock(&dev->mode_config.mutex);
@@ -404,8 +444,14 @@ void vmw_kms_cursor_post_execbuf(struct vmw_private *dev_priv)
 
 void vmw_du_cursor_plane_destroy(struct drm_plane *plane)
 {
+	struct vmw_cursor_plane *vcp = vmw_plane_to_vcp(plane);
+	u32 i;
+
 	vmw_cursor_update_position(plane->dev->dev_private, false, 0, 0);
-	vmw_du_destroy_cursor_mob_array(vmw_plane_to_vcp(plane));
+
+	for (i = 0; i < ARRAY_SIZE(vcp->cursor_mobs); i++)
+		vmw_du_destroy_cursor_mob(&vcp->cursor_mobs[i]);
+
 	drm_plane_cleanup(plane);
 }
 
@@ -462,6 +508,87 @@ vmw_du_plane_cleanup_fb(struct drm_plane *plane,
 }
 
 
+/**
+ * vmw_du_cursor_plane_map_cm - Maps the cursor mobs.
+ *
+ * @vps: plane_state
+ *
+ * Returns 0 on success
+ */
+
+static int
+vmw_du_cursor_plane_map_cm(struct vmw_plane_state *vps)
+{
+	int ret;
+	u32 size = vmw_du_cursor_mob_size(vps->base.crtc_w, vps->base.crtc_h);
+	struct ttm_buffer_object *bo = vps->cursor.bo;
+
+	if (bo == NULL)
+		return -EINVAL;
+
+	if (bo->base.size < size)
+		return -EINVAL;
+
+	if (vps->cursor.mapped)
+		return 0;
+
+	ret = ttm_bo_reserve(bo, false, false, NULL);
+
+	if (unlikely(ret != 0))
+		return -ENOMEM;
+
+	ret = ttm_bo_kmap(bo, 0, PFN_UP(size), &vps->cursor.map);
+
+	/*
+	 * We just want to try to get mob bind to finish
+	 * so that the first write to SVGA_REG_CURSOR_MOBID
+	 * is done with a buffer that the device has already
+	 * seen
+	 */
+	(void) ttm_bo_wait(bo, false, false);
+
+	ttm_bo_unreserve(bo);
+
+	if (unlikely(ret != 0))
+		return -ENOMEM;
+
+	vps->cursor.mapped = true;
+
+	return 0;
+}
+
+
+/**
+ * vmw_du_cursor_plane_unmap_cm - Unmaps the cursor mobs.
+ *
+ * @vps: state of the cursor plane
+ *
+ * Returns 0 on success
+ */
+
+static int
+vmw_du_cursor_plane_unmap_cm(struct vmw_plane_state *vps)
+{
+	int ret = 0;
+	struct ttm_buffer_object *bo = vps->cursor.bo;
+
+	if (!vps->cursor.mapped)
+		return 0;
+
+	if (bo == NULL)
+		return 0;
+
+	ret = ttm_bo_reserve(bo, true, false, NULL);
+	if (likely(ret == 0)) {
+		ttm_bo_kunmap(&vps->cursor.map);
+		ttm_bo_unreserve(bo);
+		vps->cursor.mapped = false;
+	}
+
+	return ret;
+}
+
+
 /**
  * vmw_du_cursor_plane_cleanup_fb - Unpins the plane surface
  *
@@ -476,6 +603,7 @@ void
 vmw_du_cursor_plane_cleanup_fb(struct drm_plane *plane,
 			       struct drm_plane_state *old_state)
 {
+	struct vmw_cursor_plane *vcp = vmw_plane_to_vcp(plane);
 	struct vmw_plane_state *vps = vmw_plane_state_to_vps(old_state);
 	bool dummy;
 
@@ -489,28 +617,23 @@ vmw_du_cursor_plane_cleanup_fb(struct drm_plane *plane,
 		}
 	}
 
-	if (vps->cm_bo != NULL && ttm_kmap_obj_virtual(&vps->cm_map, &dummy) != NULL) {
-		const int ret = ttm_bo_reserve(vps->cm_bo, true, false, NULL);
-
-		if (likely(ret == 0)) {
-			ttm_bo_kunmap(&vps->cm_map);
-			ttm_bo_unreserve(vps->cm_bo);
-		}
-	}
+	vmw_du_cursor_plane_unmap_cm(vps);
+	vmw_du_put_cursor_mob(vcp, vps);
 
 	vmw_du_plane_unpin_surf(vps, false);
 
-	if (vps->surf) {
+	if (vps->surf != NULL) {
 		vmw_surface_unreference(&vps->surf);
 		vps->surf = NULL;
 	}
 
-	if (vps->bo) {
+	if (vps->bo != NULL) {
 		vmw_bo_unreference(&vps->bo);
 		vps->bo = NULL;
 	}
 }
 
+
 /**
  * vmw_du_cursor_plane_prepare_fb - Readies the cursor by referencing it
  *
@@ -526,8 +649,6 @@ vmw_du_cursor_plane_prepare_fb(struct drm_plane *plane,
 	struct drm_framebuffer *fb = new_state->fb;
 	struct vmw_cursor_plane *vcp = vmw_plane_to_vcp(plane);
 	struct vmw_plane_state *vps = vmw_plane_state_to_vps(new_state);
-	struct ttm_buffer_object *cm_bo = NULL;
-	bool dummy;
 	int ret = 0;
 
 	if (vps->surf) {
@@ -550,13 +671,14 @@ vmw_du_cursor_plane_prepare_fb(struct drm_plane *plane,
 		}
 	}
 
-	vps->cm_bo = NULL;
-
 	if (vps->surf == NULL && vps->bo != NULL) {
 		const u32 size = new_state->crtc_w * new_state->crtc_h * sizeof(u32);
 
-		/* Not using vmw_bo_map_and_cache() helper here as we need to reserve
-		   the ttm_buffer_object first which wmw_bo_map_and_cache() omits. */
+		/*
+		 * Not using vmw_bo_map_and_cache() helper here as we need to
+		 * reserve the ttm_buffer_object first which
+		 * vmw_bo_map_and_cache() omits.
+		 */
 		ret = ttm_bo_reserve(&vps->bo->base, true, false, NULL);
 
 		if (unlikely(ret != 0))
@@ -573,67 +695,12 @@ vmw_du_cursor_plane_prepare_fb(struct drm_plane *plane,
 			return -ENOMEM;
 	}
 
-	if (vps->surf || vps->bo) {
-		unsigned cursor_mob_idx = vps->cursor_mob_idx;
-
-		/* Lazily set up cursor MOBs just once -- no reattempts. */
-		if (cursor_mob_idx == 0 && vcp->cursor_mob[0] == NULL)
-			if (vmw_du_create_cursor_mob_array(vcp) != 0)
-				vps->cursor_mob_idx = cursor_mob_idx = -1U;
-
-		if (cursor_mob_idx < ARRAY_SIZE(vcp->cursor_mob)) {
-			const u32 size = sizeof(SVGAGBCursorHeader) +
-				new_state->crtc_w * new_state->crtc_h * sizeof(u32);
-
-			cm_bo = vcp->cursor_mob[cursor_mob_idx];
-
-			if (cm_bo->resource->num_pages * PAGE_SIZE < size) {
-				ret = -EINVAL;
-				goto error_bo_unmap;
-			}
-
-			ret = ttm_bo_reserve(cm_bo, false, false, NULL);
-
-			if (unlikely(ret != 0)) {
-				ret = -ENOMEM;
-				goto error_bo_unmap;
-			}
-
-			ret = ttm_bo_kmap(cm_bo, 0, PFN_UP(size), &vps->cm_map);
-
-			/*
-			 * We just want to try to get mob bind to finish
-			 * so that the first write to SVGA_REG_CURSOR_MOBID
-			 * is done with a buffer that the device has already
-			 * seen
-			 */
-			(void) ttm_bo_wait(cm_bo, false, false);
-
-			ttm_bo_unreserve(cm_bo);
-
-			if (unlikely(ret != 0)) {
-				ret = -ENOMEM;
-				goto error_bo_unmap;
-			}
-
-			vps->cursor_mob_idx = cursor_mob_idx ^ 1;
-			vps->cm_bo = cm_bo;
-		}
+	if (vps->surf != NULL || vps->bo != NULL) {
+		vmw_du_get_cursor_mob(vcp, vps);
+		vmw_du_cursor_plane_map_cm(vps);
 	}
 
 	return 0;
-
-error_bo_unmap:
-	if (vps->bo != NULL && ttm_kmap_obj_virtual(&vps->bo->map, &dummy) != NULL) {
-		const int ret = ttm_bo_reserve(&vps->bo->base, true, false, NULL);
-		if (likely(ret == 0)) {
-			atomic_dec(&vps->bo->base_mapped_count);
-			ttm_bo_kunmap(&vps->bo->map);
-			ttm_bo_unreserve(&vps->bo->base);
-		}
-	}
-
-	return ret;
 }
 
 
@@ -650,6 +717,8 @@ vmw_du_cursor_plane_atomic_update(struct drm_plane *plane,
 	struct vmw_display_unit *du = vmw_crtc_to_du(crtc);
 	struct vmw_plane_state *vps = vmw_plane_state_to_vps(new_state);
 	s32 hotspot_x, hotspot_y;
+	void *virtual;
+	bool dummy;
 
 	hotspot_x = du->hotspot_x;
 	hotspot_y = du->hotspot_y;
@@ -662,23 +731,29 @@ vmw_du_cursor_plane_atomic_update(struct drm_plane *plane,
 	du->cursor_surface = vps->surf;
 	du->cursor_bo = vps->bo;
 
-	if (vps->surf) {
+	if (vps->surf == NULL && vps->bo == NULL) {
+		vmw_cursor_update_position(dev_priv, false, 0, 0);
+		return;
+	}
+
+	if (vps->surf != NULL) {
 		du->cursor_age = du->cursor_surface->snooper.age;
 
-		vmw_cursor_update_image(dev_priv, vps->cm_bo, &vps->cm_map,
+		vmw_cursor_update_image(dev_priv, vps,
 					vps->surf->snooper.image,
 					new_state->crtc_w,
 					new_state->crtc_h,
 					hotspot_x, hotspot_y);
-	} else if (vps->bo) {
-		vmw_cursor_update_bo(dev_priv, vps->cm_bo, &vps->cm_map,
-				     vps->bo,
-				     new_state->crtc_w,
-				     new_state->crtc_h,
-				     hotspot_x, hotspot_y);
 	} else {
-		vmw_cursor_update_position(dev_priv, false, 0, 0);
-		return;
+
+		virtual = ttm_kmap_obj_virtual(&vps->bo->map, &dummy);
+		if (virtual) {
+			vmw_cursor_update_image(dev_priv, vps, virtual,
+						new_state->crtc_w,
+						new_state->crtc_h,
+						hotspot_x, hotspot_y);
+			atomic_dec(&vps->bo->base_mapped_count);
+		}
 	}
 
 	du->cursor_x = new_state->crtc_x + du->set_gui_x;
@@ -943,11 +1018,13 @@ vmw_du_plane_duplicate_state(struct drm_plane *plane)
 	vps->pinned = 0;
 	vps->cpp = 0;
 
+	memset(&vps->cursor, 0, sizeof(vps->cursor));
+
 	/* Each ref counted resource needs to be acquired again */
-	if (vps->surf)
+	if (vps->surf != NULL)
 		(void) vmw_surface_reference(vps->surf);
 
-	if (vps->bo)
+	if (vps->bo != NULL)
 		(void) vmw_bo_reference(vps->bo);
 
 	state = &vps->base;
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_kms.h b/drivers/gpu/drm/vmwgfx/vmwgfx_kms.h
index 85f86faa3243..a9bcc91f978b 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_kms.h
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_kms.h
@@ -295,13 +295,11 @@ struct vmw_plane_state {
 	/* For CPU Blit */
 	unsigned int cpp;
 
-	/* CursorMob flipping index; -1 if cursor mobs not used */
-	unsigned int cursor_mob_idx;
-	/* Currently-active CursorMob */
-	struct ttm_buffer_object *cm_bo;
-	/* CursorMob kmap_obj; expected valid at cursor_plane_atomic_update
-	   IFF currently-active CursorMob above is valid */
-	struct ttm_bo_kmap_obj cm_map;
+	struct {
+		struct ttm_buffer_object *bo;
+		struct ttm_bo_kmap_obj map;
+		bool mapped;
+	} cursor;
 };
 
 
@@ -338,11 +336,12 @@ struct vmw_connector_state {
  * Derived class for cursor plane object
  *
  * @base DRM plane object
- * @cursor_mob array of two MOBs for CursorMob flipping
+ * @cursor.cursor_mobs Cursor mobs available for re-use
  */
 struct vmw_cursor_plane {
 	struct drm_plane base;
-	struct ttm_buffer_object *cursor_mob[2];
+
+	struct ttm_buffer_object *cursor_mobs[3];
 };
 
 /**
@@ -472,8 +471,6 @@ void vmw_kms_create_implicit_placement_property(struct vmw_private *dev_priv);
 /* Universal Plane Helpers */
 void vmw_du_primary_plane_destroy(struct drm_plane *plane);
 void vmw_du_cursor_plane_destroy(struct drm_plane *plane);
-int vmw_du_create_cursor_mob_array(struct vmw_cursor_plane *vcp);
-void vmw_du_destroy_cursor_mob_array(struct vmw_cursor_plane *vcp);
 
 /* Atomic Helpers */
 int vmw_du_primary_plane_atomic_check(struct drm_plane *plane,
-- 
2.34.1

[PATCH v2 07/16] drm/vmwgfx: Start diffing new mob cursors against old ones

[Zack Rusin]

From: Michael Banack <banackm@vmware.com>

Avoid making the SVGA device do extra work if the new cursor image
matches the old one.

Signed-off-by: Michael Banack <banackm@vmware.com>
Signed-off-by: Zack Rusin <zackr@vmware.com>
---
 drivers/gpu/drm/vmwgfx/vmwgfx_kms.c | 95 ++++++++++++++++++++++-------
 drivers/gpu/drm/vmwgfx/vmwgfx_kms.h | 12 ++--
 2 files changed, 81 insertions(+), 26 deletions(-)

diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_kms.c b/drivers/gpu/drm/vmwgfx/vmwgfx_kms.c
index 07d55d610e4c..464d7c8cd1d6 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_kms.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_kms.c
@@ -52,11 +52,9 @@ void vmw_du_cleanup(struct vmw_display_unit *du)
  * Display Unit Cursor functions
  */
 
-static void vmw_cursor_update_mob(struct vmw_private *dev_priv,
-				  struct vmw_plane_state *vps,
-				  u32 *image, u32 width, u32 height,
-				  u32 hotspotX, u32 hotspotY);
 static int vmw_du_cursor_plane_unmap_cm(struct vmw_plane_state *vps);
+static void vmw_cursor_write_mobid(struct vmw_private *dev_priv,
+				   struct vmw_plane_state *vps);
 
 struct vmw_svga_fifo_cmd_define_cursor {
 	u32 cmd;
@@ -120,9 +118,7 @@ static void vmw_cursor_update_image(struct vmw_private *dev_priv,
 				    u32 hotspotX, u32 hotspotY)
 {
 	if (vps->cursor.bo != NULL)
-		vmw_cursor_update_mob(dev_priv, vps, image,
-				      width, height,
-				      hotspotX, hotspotY);
+		vmw_cursor_write_mobid(dev_priv, vps);
 	else
 		vmw_send_define_cursor_cmd(dev_priv, image, width, height,
 					   hotspotX, hotspotY);
@@ -167,6 +163,21 @@ static void vmw_cursor_update_mob(struct vmw_private *dev_priv,
 	alpha_header->height = height;
 
 	memcpy(header + 1, image, image_size);
+}
+
+
+/**
+ * vmw_cursor_write_mobid - Update cursor via CursorMob mechanism
+ *
+ * Called from inside vmw_du_cursor_plane_atomic_update to actually
+ * make the cursor-image live.
+ *
+ * @dev_priv: device to work with
+ * @vps: DRM plane_state
+ */
+static void vmw_cursor_write_mobid(struct vmw_private *dev_priv,
+				   struct vmw_plane_state *vps)
+{
 	vmw_write(dev_priv, SVGA_REG_CURSOR_MOBID,
 		  vps->cursor.bo->resource->start);
 }
@@ -176,6 +187,39 @@ static u32 vmw_du_cursor_mob_size(u32 w, u32 h)
 	return w * h * sizeof(u32) + sizeof(SVGAGBCursorHeader);
 }
 
+
+static bool vmw_du_cursor_plane_mob_has_changed(struct vmw_plane_state *old_vps,
+						struct vmw_plane_state *new_vps)
+{
+	void *old_mob;
+	void *new_mob;
+	bool dummy;
+	u32 size;
+
+	// If either of them aren't using CursorMobs, assume changed.
+	if (old_vps->cursor.bo == NULL || new_vps->cursor.bo == NULL)
+		return true;
+
+	// If either of them failed to map, assume changed.
+	if (!old_vps->cursor.mapped || !new_vps->cursor.mapped)
+		return true;
+
+	if (old_vps->base.crtc_w != new_vps->base.crtc_w ||
+	    old_vps->base.crtc_h != new_vps->base.crtc_h)
+	    return true;
+
+	size = vmw_du_cursor_mob_size(new_vps->base.crtc_w,
+				      new_vps->base.crtc_h);
+
+	old_mob = ttm_kmap_obj_virtual(&old_vps->cursor.map, &dummy);
+	new_mob = ttm_kmap_obj_virtual(&new_vps->cursor.map, &dummy);
+
+	if (memcmp(old_mob, new_mob, size) != 0)
+		return true;
+
+	return false;
+}
+
 static void vmw_du_destroy_cursor_mob(struct ttm_buffer_object **bo)
 {
 	if (*bo == NULL)
@@ -716,9 +760,10 @@ vmw_du_cursor_plane_atomic_update(struct drm_plane *plane,
 	struct vmw_private *dev_priv = vmw_priv(crtc->dev);
 	struct vmw_display_unit *du = vmw_crtc_to_du(crtc);
 	struct vmw_plane_state *vps = vmw_plane_state_to_vps(new_state);
+	struct vmw_plane_state *old_vps = vmw_plane_state_to_vps(old_state);
 	s32 hotspot_x, hotspot_y;
-	void *virtual;
 	bool dummy;
+	void *image;
 
 	hotspot_x = du->hotspot_x;
 	hotspot_y = du->hotspot_y;
@@ -738,23 +783,32 @@ vmw_du_cursor_plane_atomic_update(struct drm_plane *plane,
 
 	if (vps->surf != NULL) {
 		du->cursor_age = du->cursor_surface->snooper.age;
+		image = vps->surf->snooper.image;
+	} else
+		image = ttm_kmap_obj_virtual(&vps->bo->map, &dummy);
 
-		vmw_cursor_update_image(dev_priv, vps,
-					vps->surf->snooper.image,
+	if (vps->cursor.bo != NULL)
+		vmw_cursor_update_mob(dev_priv, vps, image,
+				      new_state->crtc_w,
+				      new_state->crtc_h,
+				      hotspot_x, hotspot_y);
+
+	if (!vmw_du_cursor_plane_mob_has_changed(old_vps, vps)) {
+		/*
+		 * If it hasn't changed, avoid making the device do extra
+		 * work by keeping the old mob active.
+		 */
+		struct vmw_cursor_plane_state tmp = old_vps->cursor;
+		old_vps->cursor = vps->cursor;
+		vps->cursor = tmp;
+	} else if (image != NULL)
+		vmw_cursor_update_image(dev_priv, vps, image,
 					new_state->crtc_w,
 					new_state->crtc_h,
 					hotspot_x, hotspot_y);
-	} else {
 
-		virtual = ttm_kmap_obj_virtual(&vps->bo->map, &dummy);
-		if (virtual) {
-			vmw_cursor_update_image(dev_priv, vps, virtual,
-						new_state->crtc_w,
-						new_state->crtc_h,
-						hotspot_x, hotspot_y);
-			atomic_dec(&vps->bo->base_mapped_count);
-		}
-	}
+	if (image != NULL && vps->bo != NULL)
+		atomic_dec(&vps->bo->base_mapped_count);
 
 	du->cursor_x = new_state->crtc_x + du->set_gui_x;
 	du->cursor_y = new_state->crtc_y + du->set_gui_y;
@@ -1074,7 +1128,6 @@ vmw_du_plane_destroy_state(struct drm_plane *plane,
 {
 	struct vmw_plane_state *vps = vmw_plane_state_to_vps(state);
 
-
 	/* Should have been freed by cleanup_fb */
 	if (vps->surf)
 		vmw_surface_unreference(&vps->surf);
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_kms.h b/drivers/gpu/drm/vmwgfx/vmwgfx_kms.h
index a9bcc91f978b..fb4c9f9e3493 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_kms.h
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_kms.h
@@ -272,6 +272,12 @@ struct vmw_crtc_state {
 	struct drm_crtc_state base;
 };
 
+struct vmw_cursor_plane_state {
+	struct ttm_buffer_object *bo;
+	struct ttm_bo_kmap_obj map;
+	bool mapped;
+};
+
 /**
  * Derived class for plane state object
  *
@@ -295,11 +301,7 @@ struct vmw_plane_state {
 	/* For CPU Blit */
 	unsigned int cpp;
 
-	struct {
-		struct ttm_buffer_object *bo;
-		struct ttm_bo_kmap_obj map;
-		bool mapped;
-	} cursor;
+	struct vmw_cursor_plane_state cursor;
 };
 
 
-- 
2.34.1

[PATCH v2 08/16] drm/vmwgfx: Support cursor surfaces with mob cursor

[Zack Rusin]

From: Michael Banack <banackm@vmware.com>

Add support for cursor surfaces when using mob cursors.

Signed-off-by: Michael Banack <banackm@vmware.com>
Signed-off-by: Zack Rusin <zackr@vmware.com>
---
 drivers/gpu/drm/vmwgfx/vmwgfx_kms.c | 78 ++++++++++++++++++-----------
 drivers/gpu/drm/vmwgfx/vmwgfx_kms.h |  1 +
 2 files changed, 50 insertions(+), 29 deletions(-)

diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_kms.c b/drivers/gpu/drm/vmwgfx/vmwgfx_kms.c
index 464d7c8cd1d6..6c41c5b5a913 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_kms.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_kms.c
@@ -85,7 +85,7 @@ static void vmw_send_define_cursor_cmd(struct vmw_private *dev_priv,
 	   other fallible KMS-atomic resources at prepare_fb */
 	cmd = VMW_CMD_RESERVE(dev_priv, cmd_size);
 
-	if (unlikely(cmd == NULL))
+	if (unlikely(!cmd))
 		return;
 
 	memset(cmd, 0, sizeof(*cmd));
@@ -117,7 +117,7 @@ static void vmw_cursor_update_image(struct vmw_private *dev_priv,
 				    u32 *image, u32 width, u32 height,
 				    u32 hotspotX, u32 hotspotY)
 {
-	if (vps->cursor.bo != NULL)
+	if (vps->cursor.bo)
 		vmw_cursor_write_mobid(dev_priv, vps);
 	else
 		vmw_send_define_cursor_cmd(dev_priv, image, width, height,
@@ -197,7 +197,7 @@ static bool vmw_du_cursor_plane_mob_has_changed(struct vmw_plane_state *old_vps,
 	u32 size;
 
 	// If either of them aren't using CursorMobs, assume changed.
-	if (old_vps->cursor.bo == NULL || new_vps->cursor.bo == NULL)
+	if (!old_vps->cursor.bo || !new_vps->cursor.bo)
 		return true;
 
 	// If either of them failed to map, assume changed.
@@ -222,7 +222,7 @@ static bool vmw_du_cursor_plane_mob_has_changed(struct vmw_plane_state *old_vps,
 
 static void vmw_du_destroy_cursor_mob(struct ttm_buffer_object **bo)
 {
-	if (*bo == NULL)
+	if (!(*bo))
 		return;
 
 	ttm_bo_unpin(*bo);
@@ -236,14 +236,14 @@ static void vmw_du_put_cursor_mob(struct vmw_cursor_plane *vcp,
 {
 	u32 i;
 
-	if (vps->cursor.bo == NULL)
+	if (!vps->cursor.bo)
 		return;
 
 	vmw_du_cursor_plane_unmap_cm(vps);
 
 	/* Look for a free slot to return this mob to the cache. */
 	for (i = 0; i < ARRAY_SIZE(vcp->cursor_mobs); i++) {
-		if (vcp->cursor_mobs[i] == NULL) {
+		if (!vcp->cursor_mobs[i]) {
 			vcp->cursor_mobs[i] = vps->cursor.bo;
 			vps->cursor.bo = NULL;
 			return;
@@ -285,7 +285,7 @@ static int vmw_du_get_cursor_mob(struct vmw_cursor_plane *vcp,
 	    vps->base.crtc_h > cursor_max_dim)
 		return -EINVAL;
 
-	if (vps->cursor.bo != NULL) {
+	if (vps->cursor.bo) {
 		if (vps->cursor.bo->base.size >= size)
 			return 0;
 		vmw_du_put_cursor_mob(vcp, vps);
@@ -293,7 +293,7 @@ static int vmw_du_get_cursor_mob(struct vmw_cursor_plane *vcp,
 
 	/* Look for an unused mob in the cache. */
 	for (i = 0; i < ARRAY_SIZE(vcp->cursor_mobs); i++) {
-		if (vcp->cursor_mobs[i] != NULL &&
+		if (vcp->cursor_mobs[i] &&
 		    vcp->cursor_mobs[i]->base.size >= size) {
 			vps->cursor.bo = vcp->cursor_mobs[i];
 			vcp->cursor_mobs[i] = NULL;
@@ -371,7 +371,7 @@ void vmw_kms_cursor_snoop(struct vmw_surface *srf,
 
 	cmd = container_of(header, struct vmw_dma_cmd, header);
 
-	/* No snooper installed */
+	/* No snooper installed, nothing to copy */
 	if (!srf->snooper.image)
 		return;
 
@@ -471,7 +471,8 @@ void vmw_kms_cursor_post_execbuf(struct vmw_private *dev_priv)
 	list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 		du = vmw_crtc_to_du(crtc);
 		if (!du->cursor_surface ||
-		    du->cursor_age == du->cursor_surface->snooper.age)
+		    du->cursor_age == du->cursor_surface->snooper.age ||
+		    !du->cursor_surface->snooper.image)
 			continue;
 
 		du->cursor_age = du->cursor_surface->snooper.age;
@@ -567,7 +568,7 @@ vmw_du_cursor_plane_map_cm(struct vmw_plane_state *vps)
 	u32 size = vmw_du_cursor_mob_size(vps->base.crtc_w, vps->base.crtc_h);
 	struct ttm_buffer_object *bo = vps->cursor.bo;
 
-	if (bo == NULL)
+	if (!bo)
 		return -EINVAL;
 
 	if (bo->base.size < size)
@@ -619,7 +620,7 @@ vmw_du_cursor_plane_unmap_cm(struct vmw_plane_state *vps)
 	if (!vps->cursor.mapped)
 		return 0;
 
-	if (bo == NULL)
+	if (!bo)
 		return 0;
 
 	ret = ttm_bo_reserve(bo, true, false, NULL);
@@ -651,7 +652,12 @@ vmw_du_cursor_plane_cleanup_fb(struct drm_plane *plane,
 	struct vmw_plane_state *vps = vmw_plane_state_to_vps(old_state);
 	bool dummy;
 
-	if (vps->bo != NULL && ttm_kmap_obj_virtual(&vps->bo->map, &dummy) != NULL) {
+	if (vps->surf_mapped) {
+		vmw_bo_unmap(vps->surf->res.backup);
+		vps->surf_mapped = false;
+	}
+
+	if (vps->bo && ttm_kmap_obj_virtual(&vps->bo->map, &dummy)) {
 		const int ret = ttm_bo_reserve(&vps->bo->base, true, false, NULL);
 
 		if (likely(ret == 0)) {
@@ -666,12 +672,12 @@ vmw_du_cursor_plane_cleanup_fb(struct drm_plane *plane,
 
 	vmw_du_plane_unpin_surf(vps, false);
 
-	if (vps->surf != NULL) {
+	if (vps->surf) {
 		vmw_surface_unreference(&vps->surf);
 		vps->surf = NULL;
 	}
 
-	if (vps->bo != NULL) {
+	if (vps->bo) {
 		vmw_bo_unreference(&vps->bo);
 		vps->bo = NULL;
 	}
@@ -715,7 +721,7 @@ vmw_du_cursor_plane_prepare_fb(struct drm_plane *plane,
 		}
 	}
 
-	if (vps->surf == NULL && vps->bo != NULL) {
+	if (!vps->surf && vps->bo) {
 		const u32 size = new_state->crtc_w * new_state->crtc_h * sizeof(u32);
 
 		/*
@@ -737,9 +743,18 @@ vmw_du_cursor_plane_prepare_fb(struct drm_plane *plane,
 
 		if (unlikely(ret != 0))
 			return -ENOMEM;
+	} else if (vps->surf && !vps->bo && vps->surf->res.backup) {
+
+		ret = ttm_bo_reserve(&vps->surf->res.backup->base, true, false,
+				     NULL);
+		if (unlikely(ret != 0))
+			return -ENOMEM;
+		vmw_bo_map_and_cache(vps->surf->res.backup);
+		ttm_bo_unreserve(&vps->surf->res.backup->base);
+		vps->surf_mapped = true;
 	}
 
-	if (vps->surf != NULL || vps->bo != NULL) {
+	if (vps->surf || vps->bo) {
 		vmw_du_get_cursor_mob(vcp, vps);
 		vmw_du_cursor_plane_map_cm(vps);
 	}
@@ -776,18 +791,20 @@ vmw_du_cursor_plane_atomic_update(struct drm_plane *plane,
 	du->cursor_surface = vps->surf;
 	du->cursor_bo = vps->bo;
 
-	if (vps->surf == NULL && vps->bo == NULL) {
+	if (!vps->surf && !vps->bo) {
 		vmw_cursor_update_position(dev_priv, false, 0, 0);
 		return;
 	}
 
-	if (vps->surf != NULL) {
+	if (vps->surf) {
 		du->cursor_age = du->cursor_surface->snooper.age;
 		image = vps->surf->snooper.image;
+		if (vps->surf_mapped)
+			image = vmw_bo_map_and_cache(vps->surf->res.backup);
 	} else
 		image = ttm_kmap_obj_virtual(&vps->bo->map, &dummy);
 
-	if (vps->cursor.bo != NULL)
+	if (vps->cursor.bo)
 		vmw_cursor_update_mob(dev_priv, vps, image,
 				      new_state->crtc_w,
 				      new_state->crtc_h,
@@ -801,13 +818,13 @@ vmw_du_cursor_plane_atomic_update(struct drm_plane *plane,
 		struct vmw_cursor_plane_state tmp = old_vps->cursor;
 		old_vps->cursor = vps->cursor;
 		vps->cursor = tmp;
-	} else if (image != NULL)
+	} else if (image)
 		vmw_cursor_update_image(dev_priv, vps, image,
 					new_state->crtc_w,
 					new_state->crtc_h,
 					hotspot_x, hotspot_y);
 
-	if (image != NULL && vps->bo != NULL)
+	if (image && vps->bo)
 		atomic_dec(&vps->bo->base_mapped_count);
 
 	du->cursor_x = new_state->crtc_x + du->set_gui_x;
@@ -907,12 +924,16 @@ int vmw_du_cursor_plane_atomic_check(struct drm_plane *plane,
 		return -EINVAL;
 	}
 
-	if (!vmw_framebuffer_to_vfb(fb)->bo)
+	if (!vmw_framebuffer_to_vfb(fb)->bo) {
 		surface = vmw_framebuffer_to_vfbs(fb)->surface;
 
-	if (surface && !surface->snooper.image) {
-		DRM_ERROR("surface not suitable for cursor\n");
-		return -EINVAL;
+		WARN_ON(!surface);
+
+		if (!surface ||
+		    (!surface->snooper.image && !surface->res.backup)) {
+			DRM_ERROR("surface not suitable for cursor\n");
+			return -EINVAL;
+		}
 	}
 
 	return 0;
@@ -1075,10 +1096,10 @@ vmw_du_plane_duplicate_state(struct drm_plane *plane)
 	memset(&vps->cursor, 0, sizeof(vps->cursor));
 
 	/* Each ref counted resource needs to be acquired again */
-	if (vps->surf != NULL)
+	if (vps->surf)
 		(void) vmw_surface_reference(vps->surf);
 
-	if (vps->bo != NULL)
+	if (vps->bo)
 		(void) vmw_bo_reference(vps->bo);
 
 	state = &vps->base;
@@ -2223,7 +2244,6 @@ int vmw_kms_cursor_bypass_ioctl(struct drm_device *dev, void *data,
 	struct drm_crtc *crtc;
 	int ret = 0;
 
-
 	mutex_lock(&dev->mode_config.mutex);
 	if (arg->flags & DRM_VMW_CURSOR_BYPASS_ALL) {
 
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_kms.h b/drivers/gpu/drm/vmwgfx/vmwgfx_kms.h
index fb4c9f9e3493..c5e4665a956c 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_kms.h
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_kms.h
@@ -301,6 +301,7 @@ struct vmw_plane_state {
 	/* For CPU Blit */
 	unsigned int cpp;
 
+	bool surf_mapped;
 	struct vmw_cursor_plane_state cursor;
 };
 
-- 
2.34.1

[PATCH v2 09/16] drm/vmwgfx: Diff cursors when using cmds

[Zack Rusin]

From: Michael Banack <banackm@vmware.com>

Extend the cursor diffing support to support the command-path.

Signed-off-by: Michael Banack <banackm@vmware.com>
Signed-off-by: Zack Rusin <zackr@vmware.com>
---
 drivers/gpu/drm/vmwgfx/vmwgfx_kms.c | 120 ++++++++++++++--------------
 drivers/gpu/drm/vmwgfx/vmwgfx_kms.h |   2 +
 2 files changed, 62 insertions(+), 60 deletions(-)

diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_kms.c b/drivers/gpu/drm/vmwgfx/vmwgfx_kms.c
index 6c41c5b5a913..ff79668ad334 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_kms.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_kms.c
@@ -53,8 +53,10 @@ void vmw_du_cleanup(struct vmw_display_unit *du)
  */
 
 static int vmw_du_cursor_plane_unmap_cm(struct vmw_plane_state *vps);
-static void vmw_cursor_write_mobid(struct vmw_private *dev_priv,
-				   struct vmw_plane_state *vps);
+static void vmw_cursor_update_mob(struct vmw_private *dev_priv,
+				  struct vmw_plane_state *vps,
+				  u32 *image, u32 width, u32 height,
+				  u32 hotspotX, u32 hotspotY);
 
 struct vmw_svga_fifo_cmd_define_cursor {
 	u32 cmd;
@@ -118,7 +120,10 @@ static void vmw_cursor_update_image(struct vmw_private *dev_priv,
 				    u32 hotspotX, u32 hotspotY)
 {
 	if (vps->cursor.bo)
-		vmw_cursor_write_mobid(dev_priv, vps);
+		vmw_cursor_update_mob(dev_priv, vps, image,
+				      vps->base.crtc_w, vps->base.crtc_h,
+				      hotspotX, hotspotY);
+
 	else
 		vmw_send_define_cursor_cmd(dev_priv, image, width, height,
 					   hotspotX, hotspotY);
@@ -163,61 +168,58 @@ static void vmw_cursor_update_mob(struct vmw_private *dev_priv,
 	alpha_header->height = height;
 
 	memcpy(header + 1, image, image_size);
-}
-
-
-/**
- * vmw_cursor_write_mobid - Update cursor via CursorMob mechanism
- *
- * Called from inside vmw_du_cursor_plane_atomic_update to actually
- * make the cursor-image live.
- *
- * @dev_priv: device to work with
- * @vps: DRM plane_state
- */
-static void vmw_cursor_write_mobid(struct vmw_private *dev_priv,
-				   struct vmw_plane_state *vps)
-{
 	vmw_write(dev_priv, SVGA_REG_CURSOR_MOBID,
 		  vps->cursor.bo->resource->start);
 }
 
+
 static u32 vmw_du_cursor_mob_size(u32 w, u32 h)
 {
 	return w * h * sizeof(u32) + sizeof(SVGAGBCursorHeader);
 }
 
-
-static bool vmw_du_cursor_plane_mob_has_changed(struct vmw_plane_state *old_vps,
-						struct vmw_plane_state *new_vps)
+/**
+ * vmw_du_cursor_plane_acquire_image -- Acquire the image data
+ * @vps: cursor plane state
+ */
+static u32 *vmw_du_cursor_plane_acquire_image(struct vmw_plane_state *vps)
 {
-	void *old_mob;
-	void *new_mob;
 	bool dummy;
-	u32 size;
-
-	// If either of them aren't using CursorMobs, assume changed.
-	if (!old_vps->cursor.bo || !new_vps->cursor.bo)
-		return true;
+	if (vps->surf) {
+		if (vps->surf_mapped)
+			return vmw_bo_map_and_cache(vps->surf->res.backup);
+		return vps->surf->snooper.image;
+	} else if (vps->bo)
+		return ttm_kmap_obj_virtual(&vps->bo->map, &dummy);
+	return NULL;
+}
 
-	// If either of them failed to map, assume changed.
-	if (!old_vps->cursor.mapped || !new_vps->cursor.mapped)
-		return true;
+static bool vmw_du_cursor_plane_has_changed(struct vmw_plane_state *old_vps,
+					    struct vmw_plane_state *new_vps)
+{
+	void *old_image;
+	void *new_image;
+	u32 size;
+	bool changed;
 
 	if (old_vps->base.crtc_w != new_vps->base.crtc_w ||
 	    old_vps->base.crtc_h != new_vps->base.crtc_h)
 	    return true;
 
-	size = vmw_du_cursor_mob_size(new_vps->base.crtc_w,
-				      new_vps->base.crtc_h);
+	if (old_vps->cursor.hotspot_x != new_vps->cursor.hotspot_x ||
+	    old_vps->cursor.hotspot_y != new_vps->cursor.hotspot_y)
+	    return true;
 
-	old_mob = ttm_kmap_obj_virtual(&old_vps->cursor.map, &dummy);
-	new_mob = ttm_kmap_obj_virtual(&new_vps->cursor.map, &dummy);
+	size = new_vps->base.crtc_w * new_vps->base.crtc_h * sizeof(u32);
 
-	if (memcmp(old_mob, new_mob, size) != 0)
-		return true;
+	old_image = vmw_du_cursor_plane_acquire_image(old_vps);
+	new_image = vmw_du_cursor_plane_acquire_image(new_vps);
 
-	return false;
+	changed = false;
+	if (old_image && new_image)
+		changed = memcmp(old_image, new_image, size) != 0;
+
+	return changed;
 }
 
 static void vmw_du_destroy_cursor_mob(struct ttm_buffer_object **bo)
@@ -745,6 +747,7 @@ vmw_du_cursor_plane_prepare_fb(struct drm_plane *plane,
 			return -ENOMEM;
 	} else if (vps->surf && !vps->bo && vps->surf->res.backup) {
 
+		WARN_ON(vps->surf->snooper.image);
 		ret = ttm_bo_reserve(&vps->surf->res.backup->base, true, false,
 				     NULL);
 		if (unlikely(ret != 0))
@@ -778,7 +781,6 @@ vmw_du_cursor_plane_atomic_update(struct drm_plane *plane,
 	struct vmw_plane_state *old_vps = vmw_plane_state_to_vps(old_state);
 	s32 hotspot_x, hotspot_y;
 	bool dummy;
-	void *image;
 
 	hotspot_x = du->hotspot_x;
 	hotspot_y = du->hotspot_y;
@@ -796,36 +798,34 @@ vmw_du_cursor_plane_atomic_update(struct drm_plane *plane,
 		return;
 	}
 
+	vps->cursor.hotspot_x = hotspot_x;
+	vps->cursor.hotspot_y = hotspot_y;
+
 	if (vps->surf) {
 		du->cursor_age = du->cursor_surface->snooper.age;
-		image = vps->surf->snooper.image;
-		if (vps->surf_mapped)
-			image = vmw_bo_map_and_cache(vps->surf->res.backup);
-	} else
-		image = ttm_kmap_obj_virtual(&vps->bo->map, &dummy);
-
-	if (vps->cursor.bo)
-		vmw_cursor_update_mob(dev_priv, vps, image,
-				      new_state->crtc_w,
-				      new_state->crtc_h,
-				      hotspot_x, hotspot_y);
+	}
 
-	if (!vmw_du_cursor_plane_mob_has_changed(old_vps, vps)) {
+	if (!vmw_du_cursor_plane_has_changed(old_vps, vps)) {
 		/*
 		 * If it hasn't changed, avoid making the device do extra
-		 * work by keeping the old mob active.
+		 * work by keeping the old cursor active.
 		 */
 		struct vmw_cursor_plane_state tmp = old_vps->cursor;
 		old_vps->cursor = vps->cursor;
 		vps->cursor = tmp;
-	} else if (image)
-		vmw_cursor_update_image(dev_priv, vps, image,
-					new_state->crtc_w,
-					new_state->crtc_h,
-					hotspot_x, hotspot_y);
-
-	if (image && vps->bo)
-		atomic_dec(&vps->bo->base_mapped_count);
+	} else {
+		void *image = vmw_du_cursor_plane_acquire_image(vps);
+		if (image)
+			vmw_cursor_update_image(dev_priv, vps, image,
+						new_state->crtc_w,
+						new_state->crtc_h,
+						hotspot_x, hotspot_y);
+	}
+
+	if (vps->bo) {
+		if (ttm_kmap_obj_virtual(&vps->bo->map, &dummy))
+			atomic_dec(&vps->bo->base_mapped_count);
+	}
 
 	du->cursor_x = new_state->crtc_x + du->set_gui_x;
 	du->cursor_y = new_state->crtc_y + du->set_gui_y;
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_kms.h b/drivers/gpu/drm/vmwgfx/vmwgfx_kms.h
index c5e4665a956c..13a265ffd9f8 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_kms.h
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_kms.h
@@ -276,6 +276,8 @@ struct vmw_cursor_plane_state {
 	struct ttm_buffer_object *bo;
 	struct ttm_bo_kmap_obj map;
 	bool mapped;
+	s32 hotspot_x;
+	s32 hotspot_y;
 };
 
 /**
-- 
2.34.1

[PATCH v2 10/16] drm/vmwgfx: Refactor ttm reference object hashtable to use linux/hashtable.

[Zack Rusin]

From: Maaz Mombasawala <mombasawalam@vmware.com>

This is part of an effort to move from the vmwgfx_open_hash hashtable to
linux/hashtable implementation.
Refactor the ref_hash hashtable, used for fast lookup of reference objects
associated with a ttm file.
This also exposed a problem related to inconsistently using 32-bit and
64-bit keys with this hashtable. The hash function used changes depending
on the size of the type, and results are not consistent across numbers,
for example, hash_32(329) = 329, but hash_long(329) = 328. This would
cause the lookup to fail for objects already in the hashtable, since keys
of different sizes were being passed during adding and lookup. This was
not an issue before because vmwgfx_open_hash always used hash_long.
Fix this by always using 64-bit keys for this hashtable, which means that
hash_long is always used.

Signed-off-by: Maaz Mombasawala <mombasawalam@vmware.com>
Reviewed-by: Zack Rusin <zackr@vmware.com>
Signed-off-by: Zack Rusin <zackr@vmware.com>
---
 drivers/gpu/drm/vmwgfx/ttm_object.c | 91 ++++++++++++++++-------------
 drivers/gpu/drm/vmwgfx/ttm_object.h | 12 ++--
 drivers/gpu/drm/vmwgfx/vmwgfx_drv.c |  2 +-
 3 files changed, 56 insertions(+), 49 deletions(-)

diff --git a/drivers/gpu/drm/vmwgfx/ttm_object.c b/drivers/gpu/drm/vmwgfx/ttm_object.c
index 9546b121bc22..c07b81fbc495 100644
--- a/drivers/gpu/drm/vmwgfx/ttm_object.c
+++ b/drivers/gpu/drm/vmwgfx/ttm_object.c
@@ -52,9 +52,12 @@
 #include <linux/slab.h>
 #include <linux/atomic.h>
 #include <linux/module.h>
+#include <linux/hashtable.h>
 
 MODULE_IMPORT_NS(DMA_BUF);
 
+#define VMW_TTM_OBJECT_REF_HT_ORDER 10
+
 /**
  * struct ttm_object_file
  *
@@ -75,7 +78,7 @@ struct ttm_object_file {
 	struct ttm_object_device *tdev;
 	spinlock_t lock;
 	struct list_head ref_list;
-	struct vmwgfx_open_hash ref_hash;
+	DECLARE_HASHTABLE(ref_hash, VMW_TTM_OBJECT_REF_HT_ORDER);
 	struct kref refcount;
 };
 
@@ -136,6 +139,36 @@ ttm_object_file_ref(struct ttm_object_file *tfile)
 	return tfile;
 }
 
+static int ttm_tfile_find_ref_rcu(struct ttm_object_file *tfile,
+				  uint64_t key,
+				  struct vmwgfx_hash_item **p_hash)
+{
+	struct vmwgfx_hash_item *hash;
+
+	hash_for_each_possible_rcu(tfile->ref_hash, hash, head, key) {
+		if (hash->key == key) {
+			*p_hash = hash;
+			return 0;
+		}
+	}
+	return -EINVAL;
+}
+
+static int ttm_tfile_find_ref(struct ttm_object_file *tfile,
+			      uint64_t key,
+			      struct vmwgfx_hash_item **p_hash)
+{
+	struct vmwgfx_hash_item *hash;
+
+	hash_for_each_possible(tfile->ref_hash, hash, head, key) {
+		if (hash->key == key) {
+			*p_hash = hash;
+			return 0;
+		}
+	}
+	return -EINVAL;
+}
+
 static void ttm_object_file_destroy(struct kref *kref)
 {
 	struct ttm_object_file *tfile =
@@ -238,14 +271,13 @@ void ttm_base_object_unref(struct ttm_base_object **p_base)
  * Return: A pointer to the object if successful or NULL otherwise.
  */
 struct ttm_base_object *
-ttm_base_object_noref_lookup(struct ttm_object_file *tfile, uint32_t key)
+ttm_base_object_noref_lookup(struct ttm_object_file *tfile, uint64_t key)
 {
 	struct vmwgfx_hash_item *hash;
-	struct vmwgfx_open_hash *ht = &tfile->ref_hash;
 	int ret;
 
 	rcu_read_lock();
-	ret = vmwgfx_ht_find_item_rcu(ht, key, &hash);
+	ret = ttm_tfile_find_ref_rcu(tfile, key, &hash);
 	if (ret) {
 		rcu_read_unlock();
 		return NULL;
@@ -257,15 +289,14 @@ ttm_base_object_noref_lookup(struct ttm_object_file *tfile, uint32_t key)
 EXPORT_SYMBOL(ttm_base_object_noref_lookup);
 
 struct ttm_base_object *ttm_base_object_lookup(struct ttm_object_file *tfile,
-					       uint32_t key)
+					       uint64_t key)
 {
 	struct ttm_base_object *base = NULL;
 	struct vmwgfx_hash_item *hash;
-	struct vmwgfx_open_hash *ht = &tfile->ref_hash;
 	int ret;
 
 	rcu_read_lock();
-	ret = vmwgfx_ht_find_item_rcu(ht, key, &hash);
+	ret = ttm_tfile_find_ref_rcu(tfile, key, &hash);
 
 	if (likely(ret == 0)) {
 		base = drm_hash_entry(hash, struct ttm_ref_object, hash)->obj;
@@ -278,7 +309,7 @@ struct ttm_base_object *ttm_base_object_lookup(struct ttm_object_file *tfile,
 }
 
 struct ttm_base_object *
-ttm_base_object_lookup_for_ref(struct ttm_object_device *tdev, uint32_t key)
+ttm_base_object_lookup_for_ref(struct ttm_object_device *tdev, uint64_t key)
 {
 	struct ttm_base_object *base;
 
@@ -297,7 +328,6 @@ int ttm_ref_object_add(struct ttm_object_file *tfile,
 		       bool *existed,
 		       bool require_existed)
 {
-	struct vmwgfx_open_hash *ht = &tfile->ref_hash;
 	struct ttm_ref_object *ref;
 	struct vmwgfx_hash_item *hash;
 	int ret = -EINVAL;
@@ -310,7 +340,7 @@ int ttm_ref_object_add(struct ttm_object_file *tfile,
 
 	while (ret == -EINVAL) {
 		rcu_read_lock();
-		ret = vmwgfx_ht_find_item_rcu(ht, base->handle, &hash);
+		ret = ttm_tfile_find_ref_rcu(tfile, base->handle, &hash);
 
 		if (ret == 0) {
 			ref = drm_hash_entry(hash, struct ttm_ref_object, hash);
@@ -335,21 +365,14 @@ int ttm_ref_object_add(struct ttm_object_file *tfile,
 		kref_init(&ref->kref);
 
 		spin_lock(&tfile->lock);
-		ret = vmwgfx_ht_insert_item_rcu(ht, &ref->hash);
-
-		if (likely(ret == 0)) {
-			list_add_tail(&ref->head, &tfile->ref_list);
-			kref_get(&base->refcount);
-			spin_unlock(&tfile->lock);
-			if (existed != NULL)
-				*existed = false;
-			break;
-		}
+		hash_add_rcu(tfile->ref_hash, &ref->hash.head, ref->hash.key);
+		ret = 0;
 
+		list_add_tail(&ref->head, &tfile->ref_list);
+		kref_get(&base->refcount);
 		spin_unlock(&tfile->lock);
-		BUG_ON(ret != -EINVAL);
-
-		kfree(ref);
+		if (existed != NULL)
+			*existed = false;
 	}
 
 	return ret;
@@ -361,10 +384,8 @@ ttm_ref_object_release(struct kref *kref)
 	struct ttm_ref_object *ref =
 	    container_of(kref, struct ttm_ref_object, kref);
 	struct ttm_object_file *tfile = ref->tfile;
-	struct vmwgfx_open_hash *ht;
 
-	ht = &tfile->ref_hash;
-	(void)vmwgfx_ht_remove_item_rcu(ht, &ref->hash);
+	hash_del_rcu(&ref->hash.head);
 	list_del(&ref->head);
 	spin_unlock(&tfile->lock);
 
@@ -376,13 +397,12 @@ ttm_ref_object_release(struct kref *kref)
 int ttm_ref_object_base_unref(struct ttm_object_file *tfile,
 			      unsigned long key)
 {
-	struct vmwgfx_open_hash *ht = &tfile->ref_hash;
 	struct ttm_ref_object *ref;
 	struct vmwgfx_hash_item *hash;
 	int ret;
 
 	spin_lock(&tfile->lock);
-	ret = vmwgfx_ht_find_item(ht, key, &hash);
+	ret = ttm_tfile_find_ref(tfile, key, &hash);
 	if (unlikely(ret != 0)) {
 		spin_unlock(&tfile->lock);
 		return -EINVAL;
@@ -414,16 +434,13 @@ void ttm_object_file_release(struct ttm_object_file **p_tfile)
 	}
 
 	spin_unlock(&tfile->lock);
-	vmwgfx_ht_remove(&tfile->ref_hash);
 
 	ttm_object_file_unref(&tfile);
 }
 
-struct ttm_object_file *ttm_object_file_init(struct ttm_object_device *tdev,
-					     unsigned int hash_order)
+struct ttm_object_file *ttm_object_file_init(struct ttm_object_device *tdev)
 {
 	struct ttm_object_file *tfile = kmalloc(sizeof(*tfile), GFP_KERNEL);
-	int ret;
 
 	if (unlikely(tfile == NULL))
 		return NULL;
@@ -433,17 +450,9 @@ struct ttm_object_file *ttm_object_file_init(struct ttm_object_device *tdev,
 	kref_init(&tfile->refcount);
 	INIT_LIST_HEAD(&tfile->ref_list);
 
-	ret = vmwgfx_ht_create(&tfile->ref_hash, hash_order);
-	if (ret)
-		goto out_err;
+	hash_init(tfile->ref_hash);
 
 	return tfile;
-out_err:
-	vmwgfx_ht_remove(&tfile->ref_hash);
-
-	kfree(tfile);
-
-	return NULL;
 }
 
 struct ttm_object_device *
diff --git a/drivers/gpu/drm/vmwgfx/ttm_object.h b/drivers/gpu/drm/vmwgfx/ttm_object.h
index 6870f951b677..67f30d589e27 100644
--- a/drivers/gpu/drm/vmwgfx/ttm_object.h
+++ b/drivers/gpu/drm/vmwgfx/ttm_object.h
@@ -104,7 +104,7 @@ struct ttm_base_object {
 	struct ttm_object_file *tfile;
 	struct kref refcount;
 	void (*refcount_release) (struct ttm_base_object **base);
-	u32 handle;
+	u64 handle;
 	enum ttm_object_type object_type;
 	u32 shareable;
 };
@@ -164,7 +164,7 @@ extern int ttm_base_object_init(struct ttm_object_file *tfile,
  */
 
 extern struct ttm_base_object *ttm_base_object_lookup(struct ttm_object_file
-						      *tfile, uint32_t key);
+						      *tfile, uint64_t key);
 
 /**
  * ttm_base_object_lookup_for_ref
@@ -178,7 +178,7 @@ extern struct ttm_base_object *ttm_base_object_lookup(struct ttm_object_file
  */
 
 extern struct ttm_base_object *
-ttm_base_object_lookup_for_ref(struct ttm_object_device *tdev, uint32_t key);
+ttm_base_object_lookup_for_ref(struct ttm_object_device *tdev, uint64_t key);
 
 /**
  * ttm_base_object_unref
@@ -237,14 +237,12 @@ extern int ttm_ref_object_base_unref(struct ttm_object_file *tfile,
  * ttm_object_file_init - initialize a struct ttm_object file
  *
  * @tdev: A struct ttm_object device this file is initialized on.
- * @hash_order: Order of the hash table used to hold the reference objects.
  *
  * This is typically called by the file_ops::open function.
  */
 
 extern struct ttm_object_file *ttm_object_file_init(struct ttm_object_device
-						    *tdev,
-						    unsigned int hash_order);
+						    *tdev);
 
 /**
  * ttm_object_file_release - release data held by a ttm_object_file
@@ -312,7 +310,7 @@ extern int ttm_prime_handle_to_fd(struct ttm_object_file *tfile,
 	kfree_rcu(__obj, __prime.base.rhead)
 
 struct ttm_base_object *
-ttm_base_object_noref_lookup(struct ttm_object_file *tfile, uint32_t key);
+ttm_base_object_noref_lookup(struct ttm_object_file *tfile, uint64_t key);
 
 /**
  * ttm_base_object_noref_release - release a base object pointer looked up
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c
index 8d77e79bd904..b909a3ce9af3 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c
@@ -1242,7 +1242,7 @@ static int vmw_driver_open(struct drm_device *dev, struct drm_file *file_priv)
 	if (unlikely(!vmw_fp))
 		return ret;
 
-	vmw_fp->tfile = ttm_object_file_init(dev_priv->tdev, 10);
+	vmw_fp->tfile = ttm_object_file_init(dev_priv->tdev);
 	if (unlikely(vmw_fp->tfile == NULL))
 		goto out_no_tfile;
 
-- 
2.34.1

[PATCH v2 11/16] drm/vmwgfx: Remove vmwgfx_hashtab

[Zack Rusin]

From: Maaz Mombasawala <mombasawalam@vmware.com>

The vmwgfx driver has migrated from using the hashtable in vmwgfx_hashtab
to the linux/hashtable implementation. Remove the vmwgfx_hashtab from the
driver.

Signed-off-by: Maaz Mombasawala <mombasawalam@vmware.com>
Reviewed-by: Martin Krastev <krastevm@vmware.com>
Reviewed-by: Zack Rusin <zackr@vmware.com>
Signed-off-by: Zack Rusin <zackr@vmware.com>
---
 Documentation/gpu/todo.rst                 |  11 --
 drivers/gpu/drm/vmwgfx/Makefile            |   2 +-
 drivers/gpu/drm/vmwgfx/ttm_object.c        |   8 +-
 drivers/gpu/drm/vmwgfx/ttm_object.h        |   2 -
 drivers/gpu/drm/vmwgfx/vmwgfx_cmdbuf_res.c |   4 +-
 drivers/gpu/drm/vmwgfx/vmwgfx_drv.h        |   6 +-
 drivers/gpu/drm/vmwgfx/vmwgfx_hashtab.c    | 199 ---------------------
 drivers/gpu/drm/vmwgfx/vmwgfx_hashtab.h    |  83 ---------
 8 files changed, 12 insertions(+), 303 deletions(-)
 delete mode 100644 drivers/gpu/drm/vmwgfx/vmwgfx_hashtab.c
 delete mode 100644 drivers/gpu/drm/vmwgfx/vmwgfx_hashtab.h

diff --git a/Documentation/gpu/todo.rst b/Documentation/gpu/todo.rst
index 393d218e4a0c..b2c6aaf1edf2 100644
--- a/Documentation/gpu/todo.rst
+++ b/Documentation/gpu/todo.rst
@@ -651,17 +651,6 @@ See drivers/gpu/drm/amd/display/TODO for tasks.
 
 Contact: Harry Wentland, Alex Deucher
 
-vmwgfx: Replace hashtable with Linux' implementation
-----------------------------------------------------
-
-The vmwgfx driver uses its own hashtable implementation. Replace the
-code with Linux' implementation and update the callers. It's mostly a
-refactoring task, but the interfaces are different.
-
-Contact: Zack Rusin, Thomas Zimmermann <tzimmermann@suse.de>
-
-Level: Intermediate
-
 Bootsplash
 ==========
 
diff --git a/drivers/gpu/drm/vmwgfx/Makefile b/drivers/gpu/drm/vmwgfx/Makefile
index eee73b9aa404..68e350f410ad 100644
--- a/drivers/gpu/drm/vmwgfx/Makefile
+++ b/drivers/gpu/drm/vmwgfx/Makefile
@@ -1,5 +1,5 @@
 # SPDX-License-Identifier: GPL-2.0
-vmwgfx-y := vmwgfx_execbuf.o vmwgfx_gmr.o vmwgfx_hashtab.o vmwgfx_kms.o vmwgfx_drv.o \
+vmwgfx-y := vmwgfx_execbuf.o vmwgfx_gmr.o vmwgfx_kms.o vmwgfx_drv.o \
 	    vmwgfx_ioctl.o vmwgfx_resource.o vmwgfx_ttm_buffer.o \
 	    vmwgfx_cmd.o vmwgfx_irq.o vmwgfx_ldu.o vmwgfx_ttm_glue.o \
 	    vmwgfx_overlay.o vmwgfx_gmrid_manager.o vmwgfx_fence.o \
diff --git a/drivers/gpu/drm/vmwgfx/ttm_object.c b/drivers/gpu/drm/vmwgfx/ttm_object.c
index c07b81fbc495..932b125ebf3d 100644
--- a/drivers/gpu/drm/vmwgfx/ttm_object.c
+++ b/drivers/gpu/drm/vmwgfx/ttm_object.c
@@ -284,7 +284,7 @@ ttm_base_object_noref_lookup(struct ttm_object_file *tfile, uint64_t key)
 	}
 
 	__release(RCU);
-	return drm_hash_entry(hash, struct ttm_ref_object, hash)->obj;
+	return hlist_entry(hash, struct ttm_ref_object, hash)->obj;
 }
 EXPORT_SYMBOL(ttm_base_object_noref_lookup);
 
@@ -299,7 +299,7 @@ struct ttm_base_object *ttm_base_object_lookup(struct ttm_object_file *tfile,
 	ret = ttm_tfile_find_ref_rcu(tfile, key, &hash);
 
 	if (likely(ret == 0)) {
-		base = drm_hash_entry(hash, struct ttm_ref_object, hash)->obj;
+		base = hlist_entry(hash, struct ttm_ref_object, hash)->obj;
 		if (!kref_get_unless_zero(&base->refcount))
 			base = NULL;
 	}
@@ -343,7 +343,7 @@ int ttm_ref_object_add(struct ttm_object_file *tfile,
 		ret = ttm_tfile_find_ref_rcu(tfile, base->handle, &hash);
 
 		if (ret == 0) {
-			ref = drm_hash_entry(hash, struct ttm_ref_object, hash);
+			ref = hlist_entry(hash, struct ttm_ref_object, hash);
 			if (kref_get_unless_zero(&ref->kref)) {
 				rcu_read_unlock();
 				break;
@@ -407,7 +407,7 @@ int ttm_ref_object_base_unref(struct ttm_object_file *tfile,
 		spin_unlock(&tfile->lock);
 		return -EINVAL;
 	}
-	ref = drm_hash_entry(hash, struct ttm_ref_object, hash);
+	ref = hlist_entry(hash, struct ttm_ref_object, hash);
 	kref_put(&ref->kref, ttm_ref_object_release);
 	spin_unlock(&tfile->lock);
 	return 0;
diff --git a/drivers/gpu/drm/vmwgfx/ttm_object.h b/drivers/gpu/drm/vmwgfx/ttm_object.h
index 67f30d589e27..f0ebbe340ad6 100644
--- a/drivers/gpu/drm/vmwgfx/ttm_object.h
+++ b/drivers/gpu/drm/vmwgfx/ttm_object.h
@@ -42,8 +42,6 @@
 #include <linux/list.h>
 #include <linux/rcupdate.h>
 
-#include "vmwgfx_hashtab.h"
-
 /**
  * enum ttm_object_type
  *
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_cmdbuf_res.c b/drivers/gpu/drm/vmwgfx/vmwgfx_cmdbuf_res.c
index 142aef686fcd..47bc0b411055 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_cmdbuf_res.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_cmdbuf_res.c
@@ -88,7 +88,7 @@ vmw_cmdbuf_res_lookup(struct vmw_cmdbuf_res_manager *man,
 
 	hash_for_each_possible_rcu(man->resources, hash, head, key) {
 		if (hash->key == key)
-			return drm_hash_entry(hash, struct vmw_cmdbuf_res, hash)->res;
+			return hlist_entry(hash, struct vmw_cmdbuf_res, hash)->res;
 	}
 	return ERR_PTR(-EINVAL);
 }
@@ -243,7 +243,7 @@ int vmw_cmdbuf_res_remove(struct vmw_cmdbuf_res_manager *man,
 
 	hash_for_each_possible_rcu(man->resources, hash, head, key) {
 		if (hash->key == key) {
-			entry = drm_hash_entry(hash, struct vmw_cmdbuf_res, hash);
+			entry = hlist_entry(hash, struct vmw_cmdbuf_res, hash);
 			break;
 		}
 	}
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h
index d87aeedb78d0..7c45c3de0dcf 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h
@@ -43,7 +43,6 @@
 #include "ttm_object.h"
 
 #include "vmwgfx_fence.h"
-#include "vmwgfx_hashtab.h"
 #include "vmwgfx_reg.h"
 #include "vmwgfx_validation.h"
 
@@ -104,6 +103,11 @@ struct vmw_fpriv {
 	bool gb_aware; /* user-space is guest-backed aware */
 };
 
+struct vmwgfx_hash_item {
+	struct hlist_node head;
+	unsigned long key;
+};
+
 /**
  * struct vmw_buffer_object - TTM buffer object with vmwgfx additions
  * @base: The TTM buffer object
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_hashtab.c b/drivers/gpu/drm/vmwgfx/vmwgfx_hashtab.c
deleted file mode 100644
index 06aebc12774e..000000000000
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_hashtab.c
+++ /dev/null
@@ -1,199 +0,0 @@
-/*
- * Copyright 2006 Tungsten Graphics, Inc., Bismarck, ND. USA.
- * 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
- * THE COPYRIGHT HOLDERS, AUTHORS 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.
- */
-
-/*
- * Simple open hash tab implementation.
- *
- * Authors:
- * Thomas Hellström <thomas-at-tungstengraphics-dot-com>
- */
-
-#include <linux/export.h>
-#include <linux/hash.h>
-#include <linux/mm.h>
-#include <linux/rculist.h>
-#include <linux/slab.h>
-#include <linux/vmalloc.h>
-
-#include <drm/drm_print.h>
-
-#include "vmwgfx_hashtab.h"
-
-int vmwgfx_ht_create(struct vmwgfx_open_hash *ht, unsigned int order)
-{
-	unsigned int size = 1 << order;
-
-	ht->order = order;
-	ht->table = NULL;
-	if (size <= PAGE_SIZE / sizeof(*ht->table))
-		ht->table = kcalloc(size, sizeof(*ht->table), GFP_KERNEL);
-	else
-		ht->table = vzalloc(array_size(size, sizeof(*ht->table)));
-	if (!ht->table) {
-		DRM_ERROR("Out of memory for hash table\n");
-		return -ENOMEM;
-	}
-	return 0;
-}
-
-void vmwgfx_ht_verbose_list(struct vmwgfx_open_hash *ht, unsigned long key)
-{
-	struct vmwgfx_hash_item *entry;
-	struct hlist_head *h_list;
-	unsigned int hashed_key;
-	int count = 0;
-
-	hashed_key = hash_long(key, ht->order);
-	DRM_DEBUG("Key is 0x%08lx, Hashed key is 0x%08x\n", key, hashed_key);
-	h_list = &ht->table[hashed_key];
-	hlist_for_each_entry(entry, h_list, head)
-		DRM_DEBUG("count %d, key: 0x%08lx\n", count++, entry->key);
-}
-
-static struct hlist_node *vmwgfx_ht_find_key(struct vmwgfx_open_hash *ht, unsigned long key)
-{
-	struct vmwgfx_hash_item *entry;
-	struct hlist_head *h_list;
-	unsigned int hashed_key;
-
-	hashed_key = hash_long(key, ht->order);
-	h_list = &ht->table[hashed_key];
-	hlist_for_each_entry(entry, h_list, head) {
-		if (entry->key == key)
-			return &entry->head;
-		if (entry->key > key)
-			break;
-	}
-	return NULL;
-}
-
-static struct hlist_node *vmwgfx_ht_find_key_rcu(struct vmwgfx_open_hash *ht, unsigned long key)
-{
-	struct vmwgfx_hash_item *entry;
-	struct hlist_head *h_list;
-	unsigned int hashed_key;
-
-	hashed_key = hash_long(key, ht->order);
-	h_list = &ht->table[hashed_key];
-	hlist_for_each_entry_rcu(entry, h_list, head) {
-		if (entry->key == key)
-			return &entry->head;
-		if (entry->key > key)
-			break;
-	}
-	return NULL;
-}
-
-int vmwgfx_ht_insert_item(struct vmwgfx_open_hash *ht, struct vmwgfx_hash_item *item)
-{
-	struct vmwgfx_hash_item *entry;
-	struct hlist_head *h_list;
-	struct hlist_node *parent;
-	unsigned int hashed_key;
-	unsigned long key = item->key;
-
-	hashed_key = hash_long(key, ht->order);
-	h_list = &ht->table[hashed_key];
-	parent = NULL;
-	hlist_for_each_entry(entry, h_list, head) {
-		if (entry->key == key)
-			return -EINVAL;
-		if (entry->key > key)
-			break;
-		parent = &entry->head;
-	}
-	if (parent)
-		hlist_add_behind_rcu(&item->head, parent);
-	else
-		hlist_add_head_rcu(&item->head, h_list);
-	return 0;
-}
-
-/*
- * Just insert an item and return any "bits" bit key that hasn't been
- * used before.
- */
-int vmwgfx_ht_just_insert_please(struct vmwgfx_open_hash *ht, struct vmwgfx_hash_item *item,
-				 unsigned long seed, int bits, int shift,
-				 unsigned long add)
-{
-	int ret;
-	unsigned long mask = (1UL << bits) - 1;
-	unsigned long first, unshifted_key;
-
-	unshifted_key = hash_long(seed, bits);
-	first = unshifted_key;
-	do {
-		item->key = (unshifted_key << shift) + add;
-		ret = vmwgfx_ht_insert_item(ht, item);
-		if (ret)
-			unshifted_key = (unshifted_key + 1) & mask;
-	} while (ret && (unshifted_key != first));
-
-	if (ret) {
-		DRM_ERROR("Available key bit space exhausted\n");
-		return -EINVAL;
-	}
-	return 0;
-}
-
-int vmwgfx_ht_find_item(struct vmwgfx_open_hash *ht, unsigned long key,
-			struct vmwgfx_hash_item **item)
-{
-	struct hlist_node *list;
-
-	list = vmwgfx_ht_find_key_rcu(ht, key);
-	if (!list)
-		return -EINVAL;
-
-	*item = hlist_entry(list, struct vmwgfx_hash_item, head);
-	return 0;
-}
-
-int vmwgfx_ht_remove_key(struct vmwgfx_open_hash *ht, unsigned long key)
-{
-	struct hlist_node *list;
-
-	list = vmwgfx_ht_find_key(ht, key);
-	if (list) {
-		hlist_del_init_rcu(list);
-		return 0;
-	}
-	return -EINVAL;
-}
-
-int vmwgfx_ht_remove_item(struct vmwgfx_open_hash *ht, struct vmwgfx_hash_item *item)
-{
-	hlist_del_init_rcu(&item->head);
-	return 0;
-}
-
-void vmwgfx_ht_remove(struct vmwgfx_open_hash *ht)
-{
-	if (ht->table) {
-		kvfree(ht->table);
-		ht->table = NULL;
-	}
-}
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_hashtab.h b/drivers/gpu/drm/vmwgfx/vmwgfx_hashtab.h
deleted file mode 100644
index a9ce12922e21..000000000000
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_hashtab.h
+++ /dev/null
@@ -1,83 +0,0 @@
-/*
- * Copyright 2006 Tungsten Graphics, Inc., Bismack, ND. USA.
- * 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
- * THE COPYRIGHT HOLDERS, AUTHORS 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.
- */
-
-/*
- * Simple open hash tab implementation.
- *
- * Authors:
- * Thomas Hellström <thomas-at-tungstengraphics-dot-com>
- */
-
-/*
- * TODO: Replace this hashtable with Linux' generic implementation
- *       from <linux/hashtable.h>.
- */
-
-#ifndef VMWGFX_HASHTAB_H
-#define VMWGFX_HASHTAB_H
-
-#include <linux/list.h>
-
-#define drm_hash_entry(_ptr, _type, _member) container_of(_ptr, _type, _member)
-
-struct vmwgfx_hash_item {
-	struct hlist_node head;
-	unsigned long key;
-};
-
-struct vmwgfx_open_hash {
-	struct hlist_head *table;
-	u8 order;
-};
-
-int vmwgfx_ht_create(struct vmwgfx_open_hash *ht, unsigned int order);
-int vmwgfx_ht_insert_item(struct vmwgfx_open_hash *ht, struct vmwgfx_hash_item *item);
-int vmwgfx_ht_just_insert_please(struct vmwgfx_open_hash *ht, struct vmwgfx_hash_item *item,
-				 unsigned long seed, int bits, int shift,
-				 unsigned long add);
-int vmwgfx_ht_find_item(struct vmwgfx_open_hash *ht, unsigned long key,
-			struct vmwgfx_hash_item **item);
-
-void vmwgfx_ht_verbose_list(struct vmwgfx_open_hash *ht, unsigned long key);
-int vmwgfx_ht_remove_key(struct vmwgfx_open_hash *ht, unsigned long key);
-int vmwgfx_ht_remove_item(struct vmwgfx_open_hash *ht, struct vmwgfx_hash_item *item);
-void vmwgfx_ht_remove(struct vmwgfx_open_hash *ht);
-
-/*
- * RCU-safe interface
- *
- * The user of this API needs to make sure that two or more instances of the
- * hash table manipulation functions are never run simultaneously.
- * The lookup function vmwgfx_ht_find_item_rcu may, however, run simultaneously
- * with any of the manipulation functions as long as it's called from within
- * an RCU read-locked section.
- */
-#define vmwgfx_ht_insert_item_rcu vmwgfx_ht_insert_item
-#define vmwgfx_ht_just_insert_please_rcu vmwgfx_ht_just_insert_please
-#define vmwgfx_ht_remove_key_rcu vmwgfx_ht_remove_key
-#define vmwgfx_ht_remove_item_rcu vmwgfx_ht_remove_item
-#define vmwgfx_ht_find_item_rcu vmwgfx_ht_find_item
-
-#endif
-- 
2.34.1

[PATCH v2 12/16] drm/vmwgfx: Do not allow invalid bpp's for dumb buffers

[Zack Rusin]

From: Zack Rusin <zackr@vmware.com>

Dumb buffers allow a very limited set of formats. Basically everything
apart from 1, 2 and 4 is expected to return an error. Make vmwgfx
follow those guidelines.

This fixes igt's dumb_buffer invalid_bpp test on vmwgfx.

Signed-off-by: Zack Rusin <zackr@vmware.com>
Reviewed-by: Martin Krastev <krastevm@vmware.com>
Reviewed-by: Maaz Mombasawala <mombasawalam@vmware.com>
---
 drivers/gpu/drm/vmwgfx/vmwgfx_bo.c | 16 +++++++++++++++-
 1 file changed, 15 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_bo.c b/drivers/gpu/drm/vmwgfx/vmwgfx_bo.c
index 822251aaab0a..d218b15953e0 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_bo.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_bo.c
@@ -807,9 +807,23 @@ int vmw_dumb_create(struct drm_file *file_priv,
 {
 	struct vmw_private *dev_priv = vmw_priv(dev);
 	struct vmw_buffer_object *vbo;
+	int cpp = DIV_ROUND_UP(args->bpp, 8);
 	int ret;
 
-	args->pitch = args->width * ((args->bpp + 7) / 8);
+	switch (cpp) {
+	case 1: /* DRM_FORMAT_C8 */
+	case 2: /* DRM_FORMAT_RGB565 */
+	case 4: /* DRM_FORMAT_XRGB8888 */
+		break;
+	default:
+		/*
+		 * Dumb buffers don't allow anything else.
+		 * This is tested via IGT's dumb_buffers
+		 */
+		return -EINVAL;
+	}
+
+	args->pitch = args->width * cpp;
 	args->size = ALIGN(args->pitch * args->height, PAGE_SIZE);
 
 	ret = vmw_gem_object_create_with_handle(dev_priv, file_priv,
-- 
2.34.1

[PATCH v2 13/16] drm/vmwgfx: Port the framebuffer code to drm fb helpers

[Zack Rusin]

From: Zack Rusin <zackr@vmware.com>

Instead of using vmwgfx specific framebuffer implementation use the drm
fb helpers. There's no change in functionality, the only difference
is a reduction in the amount of code inside the vmwgfx module.

drm fb helpers do not deal correctly with changes in crtc preferred mode
at runtime, but the old fb code wasn't dealing with it either.
Same situation applies to high-res fb consoles - the old code was
limited to 1176x885 because it was checking for legacy/deprecated
memory limites, the drm fb helpers are limited to the initial resolution
set on fb due to first problem (drm fb helpers being unable to handle
hotplug crtc preferred mode changes).

This also removes the kernel config for disabling fb support which hasn't
been used or supported in a very long time.

Signed-off-by: Zack Rusin <zackr@vmware.com>
Reviewed-by: Maaz Mombasawala <mombasawalam@vmware.com>
Reviewed-by: Martin Krastev <krastevm@vmware.com>
---
 drivers/gpu/drm/vmwgfx/Kconfig      |   7 -
 drivers/gpu/drm/vmwgfx/Makefile     |   2 -
 drivers/gpu/drm/vmwgfx/vmwgfx_drv.c |  58 +-
 drivers/gpu/drm/vmwgfx/vmwgfx_drv.h |  35 +-
 drivers/gpu/drm/vmwgfx/vmwgfx_fb.c  | 831 ----------------------------
 drivers/gpu/drm/vmwgfx/vmwgfx_kms.c |  77 +--
 drivers/gpu/drm/vmwgfx/vmwgfx_kms.h |   7 -
 7 files changed, 26 insertions(+), 991 deletions(-)
 delete mode 100644 drivers/gpu/drm/vmwgfx/vmwgfx_fb.c

diff --git a/drivers/gpu/drm/vmwgfx/Kconfig b/drivers/gpu/drm/vmwgfx/Kconfig
index a4fabe208d9f..faddae3d6ac2 100644
--- a/drivers/gpu/drm/vmwgfx/Kconfig
+++ b/drivers/gpu/drm/vmwgfx/Kconfig
@@ -16,13 +16,6 @@ config DRM_VMWGFX
 	  virtual hardware.
 	  The compiled module will be called "vmwgfx.ko".
 
-config DRM_VMWGFX_FBCON
-	depends on DRM_VMWGFX && DRM_FBDEV_EMULATION
-	bool "Enable framebuffer console under vmwgfx by default"
-	help
-	   Choose this option if you are shipping a new vmwgfx
-	   userspace driver that supports using the kernel driver.
-
 config DRM_VMWGFX_MKSSTATS
 	bool "Enable mksGuestStats instrumentation of vmwgfx by default"
 	depends on DRM_VMWGFX
diff --git a/drivers/gpu/drm/vmwgfx/Makefile b/drivers/gpu/drm/vmwgfx/Makefile
index 68e350f410ad..2a644f035597 100644
--- a/drivers/gpu/drm/vmwgfx/Makefile
+++ b/drivers/gpu/drm/vmwgfx/Makefile
@@ -12,6 +12,4 @@ vmwgfx-y := vmwgfx_execbuf.o vmwgfx_gmr.o vmwgfx_kms.o vmwgfx_drv.o \
 	    vmwgfx_devcaps.o ttm_object.o vmwgfx_system_manager.o \
 	    vmwgfx_gem.o
 
-vmwgfx-$(CONFIG_DRM_FBDEV_EMULATION) += vmwgfx_fb.o
-
 obj-$(CONFIG_DRM_VMWGFX) := vmwgfx.o
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c
index b909a3ce9af3..df7496b74da5 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c
@@ -35,6 +35,7 @@
 
 #include <drm/drm_aperture.h>
 #include <drm/drm_drv.h>
+#include <drm/drm_fb_helper.h>
 #include <drm/drm_gem_ttm_helper.h>
 #include <drm/drm_ioctl.h>
 #include <drm/drm_module.h>
@@ -52,9 +53,6 @@
 
 #define VMWGFX_DRIVER_DESC "Linux drm driver for VMware graphics devices"
 
-#define VMW_MIN_INITIAL_WIDTH 800
-#define VMW_MIN_INITIAL_HEIGHT 600
-
 /*
  * Fully encoded drm commands. Might move to vmw_drm.h
  */
@@ -265,7 +263,6 @@ static const struct pci_device_id vmw_pci_id_list[] = {
 };
 MODULE_DEVICE_TABLE(pci, vmw_pci_id_list);
 
-static int enable_fbdev = IS_ENABLED(CONFIG_DRM_VMWGFX_FBCON);
 static int vmw_restrict_iommu;
 static int vmw_force_coherent;
 static int vmw_restrict_dma_mask;
@@ -275,8 +272,6 @@ static int vmw_probe(struct pci_dev *, const struct pci_device_id *);
 static int vmwgfx_pm_notifier(struct notifier_block *nb, unsigned long val,
 			      void *ptr);
 
-MODULE_PARM_DESC(enable_fbdev, "Enable vmwgfx fbdev");
-module_param_named(enable_fbdev, enable_fbdev, int, 0600);
 MODULE_PARM_DESC(restrict_iommu, "Try to limit IOMMU usage for TTM pages");
 module_param_named(restrict_iommu, vmw_restrict_iommu, int, 0600);
 MODULE_PARM_DESC(force_coherent, "Force coherent TTM pages");
@@ -626,8 +621,8 @@ static void vmw_get_initial_size(struct vmw_private *dev_priv)
 	width = vmw_read(dev_priv, SVGA_REG_WIDTH);
 	height = vmw_read(dev_priv, SVGA_REG_HEIGHT);
 
-	width = max_t(uint32_t, width, VMW_MIN_INITIAL_WIDTH);
-	height = max_t(uint32_t, height, VMW_MIN_INITIAL_HEIGHT);
+	width = max_t(uint32_t, width, VMWGFX_MIN_INITIAL_WIDTH);
+	height = max_t(uint32_t, height, VMWGFX_MIN_INITIAL_HEIGHT);
 
 	if (width > dev_priv->fb_max_width ||
 	    height > dev_priv->fb_max_height) {
@@ -636,8 +631,8 @@ static void vmw_get_initial_size(struct vmw_private *dev_priv)
 		 * This is a host error and shouldn't occur.
 		 */
 
-		width = VMW_MIN_INITIAL_WIDTH;
-		height = VMW_MIN_INITIAL_HEIGHT;
+		width  = VMWGFX_MIN_INITIAL_WIDTH;
+		height = VMWGFX_MIN_INITIAL_HEIGHT;
 	}
 
 	dev_priv->initial_width = width;
@@ -886,9 +881,6 @@ static int vmw_driver_load(struct vmw_private *dev_priv, u32 pci_id)
 
 	dev_priv->assume_16bpp = !!vmw_assume_16bpp;
 
-	dev_priv->enable_fb = enable_fbdev;
-
-
 	dev_priv->capabilities = vmw_read(dev_priv, SVGA_REG_CAPABILITIES);
 	vmw_print_bitmap(&dev_priv->drm, "Capabilities",
 			 dev_priv->capabilities,
@@ -1135,12 +1127,6 @@ static int vmw_driver_load(struct vmw_private *dev_priv, u32 pci_id)
 			VMWGFX_DRIVER_PATCHLEVEL, UTS_RELEASE);
 	vmw_write_driver_id(dev_priv);
 
-	if (dev_priv->enable_fb) {
-		vmw_fifo_resource_inc(dev_priv);
-		vmw_svga_enable(dev_priv);
-		vmw_fb_init(dev_priv);
-	}
-
 	dev_priv->pm_nb.notifier_call = vmwgfx_pm_notifier;
 	register_pm_notifier(&dev_priv->pm_nb);
 
@@ -1187,12 +1173,9 @@ static void vmw_driver_unload(struct drm_device *dev)
 	unregister_pm_notifier(&dev_priv->pm_nb);
 
 	vmw_sw_context_fini(dev_priv);
-	if (dev_priv->enable_fb) {
-		vmw_fb_off(dev_priv);
-		vmw_fb_close(dev_priv);
-		vmw_fifo_resource_dec(dev_priv);
-		vmw_svga_disable(dev_priv);
-	}
+	vmw_fifo_resource_dec(dev_priv);
+
+	vmw_svga_disable(dev_priv);
 
 	vmw_kms_close(dev_priv);
 	vmw_overlay_close(dev_priv);
@@ -1330,8 +1313,6 @@ static void vmw_master_drop(struct drm_device *dev,
 	struct vmw_private *dev_priv = vmw_priv(dev);
 
 	vmw_kms_legacy_hotspot_clear(dev_priv);
-	if (!dev_priv->enable_fb)
-		vmw_svga_disable(dev_priv);
 }
 
 /**
@@ -1524,25 +1505,19 @@ static int vmw_pm_freeze(struct device *kdev)
 		DRM_ERROR("Failed to freeze modesetting.\n");
 		return ret;
 	}
-	if (dev_priv->enable_fb)
-		vmw_fb_off(dev_priv);
 
 	vmw_execbuf_release_pinned_bo(dev_priv);
 	vmw_resource_evict_all(dev_priv);
 	vmw_release_device_early(dev_priv);
 	while (ttm_device_swapout(&dev_priv->bdev, &ctx, GFP_KERNEL) > 0);
-	if (dev_priv->enable_fb)
-		vmw_fifo_resource_dec(dev_priv);
+	vmw_fifo_resource_dec(dev_priv);
 	if (atomic_read(&dev_priv->num_fifo_resources) != 0) {
 		DRM_ERROR("Can't hibernate while 3D resources are active.\n");
-		if (dev_priv->enable_fb)
-			vmw_fifo_resource_inc(dev_priv);
+		vmw_fifo_resource_inc(dev_priv);
 		WARN_ON(vmw_request_device_late(dev_priv));
 		dev_priv->suspend_locked = false;
 		if (dev_priv->suspend_state)
 			vmw_kms_resume(dev);
-		if (dev_priv->enable_fb)
-			vmw_fb_on(dev_priv);
 		return -EBUSY;
 	}
 
@@ -1562,24 +1537,19 @@ static int vmw_pm_restore(struct device *kdev)
 
 	vmw_detect_version(dev_priv);
 
-	if (dev_priv->enable_fb)
-		vmw_fifo_resource_inc(dev_priv);
+	vmw_fifo_resource_inc(dev_priv);
 
 	ret = vmw_request_device(dev_priv);
 	if (ret)
 		return ret;
 
-	if (dev_priv->enable_fb)
-		__vmw_svga_enable(dev_priv);
+	__vmw_svga_enable(dev_priv);
 
 	vmw_fence_fifo_up(dev_priv->fman);
 	dev_priv->suspend_locked = false;
 	if (dev_priv->suspend_state)
 		vmw_kms_resume(&dev_priv->drm);
 
-	if (dev_priv->enable_fb)
-		vmw_fb_on(dev_priv);
-
 	return 0;
 }
 
@@ -1670,6 +1640,10 @@ static int vmw_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 	if (ret)
 		goto out_unload;
 
+	vmw_fifo_resource_inc(vmw);
+	vmw_svga_enable(vmw);
+	drm_fbdev_generic_setup(&vmw->drm,  vmw->assume_16bpp ? 16 : 32);
+
 	vmw_debugfs_gem_init(vmw);
 	vmw_debugfs_resource_managers_init(vmw);
 
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h
index 7c45c3de0dcf..ad470e54d586 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h
@@ -62,6 +62,9 @@
 #define VMWGFX_MAX_DISPLAYS 16
 #define VMWGFX_CMD_BOUNCE_INIT_SIZE 32768
 
+#define VMWGFX_MIN_INITIAL_WIDTH 1280
+#define VMWGFX_MIN_INITIAL_HEIGHT 800
+
 #define VMWGFX_PCI_ID_SVGA2              0x0405
 #define VMWGFX_PCI_ID_SVGA3              0x0406
 
@@ -551,7 +554,6 @@ struct vmw_private {
 	 * Framebuffer info.
 	 */
 
-	void *fb_info;
 	enum vmw_display_unit_type active_display_unit;
 	struct vmw_legacy_display *ldu_priv;
 	struct vmw_overlay *overlay_priv;
@@ -610,8 +612,6 @@ struct vmw_private {
 	struct mutex cmdbuf_mutex;
 	struct mutex binding_mutex;
 
-	bool enable_fb;
-
 	/**
 	 * PM management.
 	 */
@@ -1189,35 +1189,6 @@ extern void vmw_generic_waiter_add(struct vmw_private *dev_priv, u32 flag,
 extern void vmw_generic_waiter_remove(struct vmw_private *dev_priv,
 				      u32 flag, int *waiter_count);
 
-
-/**
- * Kernel framebuffer - vmwgfx_fb.c
- */
-
-#ifdef CONFIG_DRM_FBDEV_EMULATION
-int vmw_fb_init(struct vmw_private *vmw_priv);
-int vmw_fb_close(struct vmw_private *dev_priv);
-int vmw_fb_off(struct vmw_private *vmw_priv);
-int vmw_fb_on(struct vmw_private *vmw_priv);
-#else
-static inline int vmw_fb_init(struct vmw_private *vmw_priv)
-{
-	return 0;
-}
-static inline int vmw_fb_close(struct vmw_private *dev_priv)
-{
-	return 0;
-}
-static inline int vmw_fb_off(struct vmw_private *vmw_priv)
-{
-	return 0;
-}
-static inline int vmw_fb_on(struct vmw_private *vmw_priv)
-{
-	return 0;
-}
-#endif
-
 /**
  * Kernel modesetting - vmwgfx_kms.c
  */
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_fb.c b/drivers/gpu/drm/vmwgfx/vmwgfx_fb.c
deleted file mode 100644
index 5b85b477e4c6..000000000000
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_fb.c
+++ /dev/null
@@ -1,831 +0,0 @@
-/**************************************************************************
- *
- * Copyright © 2007 David Airlie
- * Copyright © 2009-2015 VMware, Inc., Palo Alto, CA., USA
- * 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
- * THE COPYRIGHT HOLDERS, AUTHORS 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.
- *
- **************************************************************************/
-
-#include <linux/fb.h>
-#include <linux/pci.h>
-
-#include <drm/drm_fourcc.h>
-#include <drm/ttm/ttm_placement.h>
-
-#include "vmwgfx_drv.h"
-#include "vmwgfx_kms.h"
-
-#define VMW_DIRTY_DELAY (HZ / 30)
-
-struct vmw_fb_par {
-	struct vmw_private *vmw_priv;
-
-	void *vmalloc;
-
-	struct mutex bo_mutex;
-	struct vmw_buffer_object *vmw_bo;
-	unsigned bo_size;
-	struct drm_framebuffer *set_fb;
-	struct drm_display_mode *set_mode;
-	u32 fb_x;
-	u32 fb_y;
-	bool bo_iowrite;
-
-	u32 pseudo_palette[17];
-
-	unsigned max_width;
-	unsigned max_height;
-
-	struct {
-		spinlock_t lock;
-		bool active;
-		unsigned x1;
-		unsigned y1;
-		unsigned x2;
-		unsigned y2;
-	} dirty;
-
-	struct drm_crtc *crtc;
-	struct drm_connector *con;
-	struct delayed_work local_work;
-};
-
-static int vmw_fb_setcolreg(unsigned regno, unsigned red, unsigned green,
-			    unsigned blue, unsigned transp,
-			    struct fb_info *info)
-{
-	struct vmw_fb_par *par = info->par;
-	u32 *pal = par->pseudo_palette;
-
-	if (regno > 15) {
-		DRM_ERROR("Bad regno %u.\n", regno);
-		return 1;
-	}
-
-	switch (par->set_fb->format->depth) {
-	case 24:
-	case 32:
-		pal[regno] = ((red & 0xff00) << 8) |
-			      (green & 0xff00) |
-			     ((blue  & 0xff00) >> 8);
-		break;
-	default:
-		DRM_ERROR("Bad depth %u, bpp %u.\n",
-			  par->set_fb->format->depth,
-			  par->set_fb->format->cpp[0] * 8);
-		return 1;
-	}
-
-	return 0;
-}
-
-static int vmw_fb_check_var(struct fb_var_screeninfo *var,
-			    struct fb_info *info)
-{
-	int depth = var->bits_per_pixel;
-	struct vmw_fb_par *par = info->par;
-	struct vmw_private *vmw_priv = par->vmw_priv;
-
-	switch (var->bits_per_pixel) {
-	case 32:
-		depth = (var->transp.length > 0) ? 32 : 24;
-		break;
-	default:
-		DRM_ERROR("Bad bpp %u.\n", var->bits_per_pixel);
-		return -EINVAL;
-	}
-
-	switch (depth) {
-	case 24:
-		var->red.offset = 16;
-		var->green.offset = 8;
-		var->blue.offset = 0;
-		var->red.length = 8;
-		var->green.length = 8;
-		var->blue.length = 8;
-		var->transp.length = 0;
-		var->transp.offset = 0;
-		break;
-	case 32:
-		var->red.offset = 16;
-		var->green.offset = 8;
-		var->blue.offset = 0;
-		var->red.length = 8;
-		var->green.length = 8;
-		var->blue.length = 8;
-		var->transp.length = 8;
-		var->transp.offset = 24;
-		break;
-	default:
-		DRM_ERROR("Bad depth %u.\n", depth);
-		return -EINVAL;
-	}
-
-	if ((var->xoffset + var->xres) > par->max_width ||
-	    (var->yoffset + var->yres) > par->max_height) {
-		DRM_ERROR("Requested geom can not fit in framebuffer\n");
-		return -EINVAL;
-	}
-
-	if (!vmw_kms_validate_mode_vram(vmw_priv,
-					var->xres * var->bits_per_pixel/8,
-					var->yoffset + var->yres)) {
-		DRM_ERROR("Requested geom can not fit in framebuffer\n");
-		return -EINVAL;
-	}
-
-	return 0;
-}
-
-static int vmw_fb_blank(int blank, struct fb_info *info)
-{
-	return 0;
-}
-
-/**
- * vmw_fb_dirty_flush - flush dirty regions to the kms framebuffer
- *
- * @work: The struct work_struct associated with this task.
- *
- * This function flushes the dirty regions of the vmalloc framebuffer to the
- * kms framebuffer, and if the kms framebuffer is visible, also updated the
- * corresponding displays. Note that this function runs even if the kms
- * framebuffer is not bound to a crtc and thus not visible, but it's turned
- * off during hibernation using the par->dirty.active bool.
- */
-static void vmw_fb_dirty_flush(struct work_struct *work)
-{
-	struct vmw_fb_par *par = container_of(work, struct vmw_fb_par,
-					      local_work.work);
-	struct vmw_private *vmw_priv = par->vmw_priv;
-	struct fb_info *info = vmw_priv->fb_info;
-	unsigned long irq_flags;
-	s32 dst_x1, dst_x2, dst_y1, dst_y2, w = 0, h = 0;
-	u32 cpp, max_x, max_y;
-	struct drm_clip_rect clip;
-	struct drm_framebuffer *cur_fb;
-	u8 *src_ptr, *dst_ptr;
-	struct vmw_buffer_object *vbo = par->vmw_bo;
-	void *virtual;
-
-	if (!READ_ONCE(par->dirty.active))
-		return;
-
-	mutex_lock(&par->bo_mutex);
-	cur_fb = par->set_fb;
-	if (!cur_fb)
-		goto out_unlock;
-
-	(void) ttm_bo_reserve(&vbo->base, false, false, NULL);
-	virtual = vmw_bo_map_and_cache(vbo);
-	if (!virtual)
-		goto out_unreserve;
-
-	spin_lock_irqsave(&par->dirty.lock, irq_flags);
-	if (!par->dirty.active) {
-		spin_unlock_irqrestore(&par->dirty.lock, irq_flags);
-		goto out_unreserve;
-	}
-
-	/*
-	 * Handle panning when copying from vmalloc to framebuffer.
-	 * Clip dirty area to framebuffer.
-	 */
-	cpp = cur_fb->format->cpp[0];
-	max_x = par->fb_x + cur_fb->width;
-	max_y = par->fb_y + cur_fb->height;
-
-	dst_x1 = par->dirty.x1 - par->fb_x;
-	dst_y1 = par->dirty.y1 - par->fb_y;
-	dst_x1 = max_t(s32, dst_x1, 0);
-	dst_y1 = max_t(s32, dst_y1, 0);
-
-	dst_x2 = par->dirty.x2 - par->fb_x;
-	dst_y2 = par->dirty.y2 - par->fb_y;
-	dst_x2 = min_t(s32, dst_x2, max_x);
-	dst_y2 = min_t(s32, dst_y2, max_y);
-	w = dst_x2 - dst_x1;
-	h = dst_y2 - dst_y1;
-	w = max_t(s32, 0, w);
-	h = max_t(s32, 0, h);
-
-	par->dirty.x1 = par->dirty.x2 = 0;
-	par->dirty.y1 = par->dirty.y2 = 0;
-	spin_unlock_irqrestore(&par->dirty.lock, irq_flags);
-
-	if (w && h) {
-		dst_ptr = (u8 *)virtual  +
-			(dst_y1 * par->set_fb->pitches[0] + dst_x1 * cpp);
-		src_ptr = (u8 *)par->vmalloc +
-			((dst_y1 + par->fb_y) * info->fix.line_length +
-			 (dst_x1 + par->fb_x) * cpp);
-
-		while (h-- > 0) {
-			memcpy(dst_ptr, src_ptr, w*cpp);
-			dst_ptr += par->set_fb->pitches[0];
-			src_ptr += info->fix.line_length;
-		}
-
-		clip.x1 = dst_x1;
-		clip.x2 = dst_x2;
-		clip.y1 = dst_y1;
-		clip.y2 = dst_y2;
-	}
-
-out_unreserve:
-	ttm_bo_unreserve(&vbo->base);
-	if (w && h) {
-		WARN_ON_ONCE(par->set_fb->funcs->dirty(cur_fb, NULL, 0, 0,
-						       &clip, 1));
-		vmw_cmd_flush(vmw_priv, false);
-	}
-out_unlock:
-	mutex_unlock(&par->bo_mutex);
-}
-
-static void vmw_fb_dirty_mark(struct vmw_fb_par *par,
-			      unsigned x1, unsigned y1,
-			      unsigned width, unsigned height)
-{
-	unsigned long flags;
-	unsigned x2 = x1 + width;
-	unsigned y2 = y1 + height;
-
-	spin_lock_irqsave(&par->dirty.lock, flags);
-	if (par->dirty.x1 == par->dirty.x2) {
-		par->dirty.x1 = x1;
-		par->dirty.y1 = y1;
-		par->dirty.x2 = x2;
-		par->dirty.y2 = y2;
-		/* if we are active start the dirty work
-		 * we share the work with the defio system */
-		if (par->dirty.active)
-			schedule_delayed_work(&par->local_work,
-					      VMW_DIRTY_DELAY);
-	} else {
-		if (x1 < par->dirty.x1)
-			par->dirty.x1 = x1;
-		if (y1 < par->dirty.y1)
-			par->dirty.y1 = y1;
-		if (x2 > par->dirty.x2)
-			par->dirty.x2 = x2;
-		if (y2 > par->dirty.y2)
-			par->dirty.y2 = y2;
-	}
-	spin_unlock_irqrestore(&par->dirty.lock, flags);
-}
-
-static int vmw_fb_pan_display(struct fb_var_screeninfo *var,
-			      struct fb_info *info)
-{
-	struct vmw_fb_par *par = info->par;
-
-	if ((var->xoffset + var->xres) > var->xres_virtual ||
-	    (var->yoffset + var->yres) > var->yres_virtual) {
-		DRM_ERROR("Requested panning can not fit in framebuffer\n");
-		return -EINVAL;
-	}
-
-	mutex_lock(&par->bo_mutex);
-	par->fb_x = var->xoffset;
-	par->fb_y = var->yoffset;
-	if (par->set_fb)
-		vmw_fb_dirty_mark(par, par->fb_x, par->fb_y, par->set_fb->width,
-				  par->set_fb->height);
-	mutex_unlock(&par->bo_mutex);
-
-	return 0;
-}
-
-static void vmw_deferred_io(struct fb_info *info, struct list_head *pagereflist)
-{
-	struct vmw_fb_par *par = info->par;
-	unsigned long start, end, min, max;
-	unsigned long flags;
-	struct fb_deferred_io_pageref *pageref;
-	int y1, y2;
-
-	min = ULONG_MAX;
-	max = 0;
-	list_for_each_entry(pageref, pagereflist, list) {
-		start = pageref->offset;
-		end = start + PAGE_SIZE - 1;
-		min = min(min, start);
-		max = max(max, end);
-	}
-
-	if (min < max) {
-		y1 = min / info->fix.line_length;
-		y2 = (max / info->fix.line_length) + 1;
-
-		spin_lock_irqsave(&par->dirty.lock, flags);
-		par->dirty.x1 = 0;
-		par->dirty.y1 = y1;
-		par->dirty.x2 = info->var.xres;
-		par->dirty.y2 = y2;
-		spin_unlock_irqrestore(&par->dirty.lock, flags);
-
-		/*
-		 * Since we've already waited on this work once, try to
-		 * execute asap.
-		 */
-		cancel_delayed_work(&par->local_work);
-		schedule_delayed_work(&par->local_work, 0);
-	}
-};
-
-static struct fb_deferred_io vmw_defio = {
-	.delay		= VMW_DIRTY_DELAY,
-	.deferred_io	= vmw_deferred_io,
-};
-
-/*
- * Draw code
- */
-
-static void vmw_fb_fillrect(struct fb_info *info, const struct fb_fillrect *rect)
-{
-	cfb_fillrect(info, rect);
-	vmw_fb_dirty_mark(info->par, rect->dx, rect->dy,
-			  rect->width, rect->height);
-}
-
-static void vmw_fb_copyarea(struct fb_info *info, const struct fb_copyarea *region)
-{
-	cfb_copyarea(info, region);
-	vmw_fb_dirty_mark(info->par, region->dx, region->dy,
-			  region->width, region->height);
-}
-
-static void vmw_fb_imageblit(struct fb_info *info, const struct fb_image *image)
-{
-	cfb_imageblit(info, image);
-	vmw_fb_dirty_mark(info->par, image->dx, image->dy,
-			  image->width, image->height);
-}
-
-/*
- * Bring up code
- */
-
-static int vmw_fb_create_bo(struct vmw_private *vmw_priv,
-			    size_t size, struct vmw_buffer_object **out)
-{
-	struct vmw_buffer_object *vmw_bo;
-	int ret;
-
-	ret = vmw_bo_create(vmw_priv, size,
-			      &vmw_sys_placement,
-			      false, false,
-			      &vmw_bo_bo_free, &vmw_bo);
-	if (unlikely(ret != 0))
-		return ret;
-
-	*out = vmw_bo;
-
-	return ret;
-}
-
-static int vmw_fb_compute_depth(struct fb_var_screeninfo *var,
-				int *depth)
-{
-	switch (var->bits_per_pixel) {
-	case 32:
-		*depth = (var->transp.length > 0) ? 32 : 24;
-		break;
-	default:
-		DRM_ERROR("Bad bpp %u.\n", var->bits_per_pixel);
-		return -EINVAL;
-	}
-
-	return 0;
-}
-
-static int vmwgfx_set_config_internal(struct drm_mode_set *set)
-{
-	struct drm_crtc *crtc = set->crtc;
-	struct drm_modeset_acquire_ctx ctx;
-	int ret;
-
-	drm_modeset_acquire_init(&ctx, 0);
-
-restart:
-	ret = crtc->funcs->set_config(set, &ctx);
-
-	if (ret == -EDEADLK) {
-		drm_modeset_backoff(&ctx);
-		goto restart;
-	}
-
-	drm_modeset_drop_locks(&ctx);
-	drm_modeset_acquire_fini(&ctx);
-
-	return ret;
-}
-
-static int vmw_fb_kms_detach(struct vmw_fb_par *par,
-			     bool detach_bo,
-			     bool unref_bo)
-{
-	struct drm_framebuffer *cur_fb = par->set_fb;
-	int ret;
-
-	/* Detach the KMS framebuffer from crtcs */
-	if (par->set_mode) {
-		struct drm_mode_set set;
-
-		set.crtc = par->crtc;
-		set.x = 0;
-		set.y = 0;
-		set.mode = NULL;
-		set.fb = NULL;
-		set.num_connectors = 0;
-		set.connectors = &par->con;
-		ret = vmwgfx_set_config_internal(&set);
-		if (ret) {
-			DRM_ERROR("Could not unset a mode.\n");
-			return ret;
-		}
-		drm_mode_destroy(&par->vmw_priv->drm, par->set_mode);
-		par->set_mode = NULL;
-	}
-
-	if (cur_fb) {
-		drm_framebuffer_put(cur_fb);
-		par->set_fb = NULL;
-	}
-
-	if (par->vmw_bo && detach_bo && unref_bo)
-		vmw_bo_unreference(&par->vmw_bo);
-
-	return 0;
-}
-
-static int vmw_fb_kms_framebuffer(struct fb_info *info)
-{
-	struct drm_mode_fb_cmd2 mode_cmd = {0};
-	struct vmw_fb_par *par = info->par;
-	struct fb_var_screeninfo *var = &info->var;
-	struct drm_framebuffer *cur_fb;
-	struct vmw_framebuffer *vfb;
-	int ret = 0, depth;
-	size_t new_bo_size;
-
-	ret = vmw_fb_compute_depth(var, &depth);
-	if (ret)
-		return ret;
-
-	mode_cmd.width = var->xres;
-	mode_cmd.height = var->yres;
-	mode_cmd.pitches[0] = ((var->bits_per_pixel + 7) / 8) * mode_cmd.width;
-	mode_cmd.pixel_format =
-		drm_mode_legacy_fb_format(var->bits_per_pixel, depth);
-
-	cur_fb = par->set_fb;
-	if (cur_fb && cur_fb->width == mode_cmd.width &&
-	    cur_fb->height == mode_cmd.height &&
-	    cur_fb->format->format == mode_cmd.pixel_format &&
-	    cur_fb->pitches[0] == mode_cmd.pitches[0])
-		return 0;
-
-	/* Need new buffer object ? */
-	new_bo_size = (size_t) mode_cmd.pitches[0] * (size_t) mode_cmd.height;
-	ret = vmw_fb_kms_detach(par,
-				par->bo_size < new_bo_size ||
-				par->bo_size > 2*new_bo_size,
-				true);
-	if (ret)
-		return ret;
-
-	if (!par->vmw_bo) {
-		ret = vmw_fb_create_bo(par->vmw_priv, new_bo_size,
-				       &par->vmw_bo);
-		if (ret) {
-			DRM_ERROR("Failed creating a buffer object for "
-				  "fbdev.\n");
-			return ret;
-		}
-		par->bo_size = new_bo_size;
-	}
-
-	vfb = vmw_kms_new_framebuffer(par->vmw_priv, par->vmw_bo, NULL,
-				      true, &mode_cmd);
-	if (IS_ERR(vfb))
-		return PTR_ERR(vfb);
-
-	par->set_fb = &vfb->base;
-
-	return 0;
-}
-
-static int vmw_fb_set_par(struct fb_info *info)
-{
-	struct vmw_fb_par *par = info->par;
-	struct vmw_private *vmw_priv = par->vmw_priv;
-	struct drm_mode_set set;
-	struct fb_var_screeninfo *var = &info->var;
-	struct drm_display_mode new_mode = { DRM_MODE("fb_mode",
-		DRM_MODE_TYPE_DRIVER,
-		0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-		DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC)
-	};
-	struct drm_display_mode *mode;
-	int ret;
-
-	mode = drm_mode_duplicate(&vmw_priv->drm, &new_mode);
-	if (!mode) {
-		DRM_ERROR("Could not create new fb mode.\n");
-		return -ENOMEM;
-	}
-
-	mode->hdisplay = var->xres;
-	mode->vdisplay = var->yres;
-	vmw_guess_mode_timing(mode);
-
-	if (!vmw_kms_validate_mode_vram(vmw_priv,
-					mode->hdisplay *
-					DIV_ROUND_UP(var->bits_per_pixel, 8),
-					mode->vdisplay)) {
-		drm_mode_destroy(&vmw_priv->drm, mode);
-		return -EINVAL;
-	}
-
-	mutex_lock(&par->bo_mutex);
-	ret = vmw_fb_kms_framebuffer(info);
-	if (ret)
-		goto out_unlock;
-
-	par->fb_x = var->xoffset;
-	par->fb_y = var->yoffset;
-
-	set.crtc = par->crtc;
-	set.x = 0;
-	set.y = 0;
-	set.mode = mode;
-	set.fb = par->set_fb;
-	set.num_connectors = 1;
-	set.connectors = &par->con;
-
-	ret = vmwgfx_set_config_internal(&set);
-	if (ret)
-		goto out_unlock;
-
-	vmw_fb_dirty_mark(par, par->fb_x, par->fb_y,
-			  par->set_fb->width, par->set_fb->height);
-
-	/* If there already was stuff dirty we wont
-	 * schedule a new work, so lets do it now */
-
-	schedule_delayed_work(&par->local_work, 0);
-
-out_unlock:
-	if (par->set_mode)
-		drm_mode_destroy(&vmw_priv->drm, par->set_mode);
-	par->set_mode = mode;
-
-	mutex_unlock(&par->bo_mutex);
-
-	return ret;
-}
-
-
-static const struct fb_ops vmw_fb_ops = {
-	.owner = THIS_MODULE,
-	.fb_check_var = vmw_fb_check_var,
-	.fb_set_par = vmw_fb_set_par,
-	.fb_setcolreg = vmw_fb_setcolreg,
-	.fb_fillrect = vmw_fb_fillrect,
-	.fb_copyarea = vmw_fb_copyarea,
-	.fb_imageblit = vmw_fb_imageblit,
-	.fb_pan_display = vmw_fb_pan_display,
-	.fb_blank = vmw_fb_blank,
-	.fb_mmap = fb_deferred_io_mmap,
-};
-
-int vmw_fb_init(struct vmw_private *vmw_priv)
-{
-	struct device *device = vmw_priv->drm.dev;
-	struct vmw_fb_par *par;
-	struct fb_info *info;
-	unsigned fb_width, fb_height;
-	unsigned int fb_bpp, fb_pitch, fb_size;
-	struct drm_display_mode *init_mode;
-	int ret;
-
-	fb_bpp = 32;
-
-	/* XXX As shouldn't these be as well. */
-	fb_width = min(vmw_priv->fb_max_width, (unsigned)2048);
-	fb_height = min(vmw_priv->fb_max_height, (unsigned)2048);
-
-	fb_pitch = fb_width * fb_bpp / 8;
-	fb_size = fb_pitch * fb_height;
-
-	info = framebuffer_alloc(sizeof(*par), device);
-	if (!info)
-		return -ENOMEM;
-
-	/*
-	 * Par
-	 */
-	vmw_priv->fb_info = info;
-	par = info->par;
-	memset(par, 0, sizeof(*par));
-	INIT_DELAYED_WORK(&par->local_work, &vmw_fb_dirty_flush);
-	par->vmw_priv = vmw_priv;
-	par->vmalloc = NULL;
-	par->max_width = fb_width;
-	par->max_height = fb_height;
-
-	ret = vmw_kms_fbdev_init_data(vmw_priv, 0, par->max_width,
-				      par->max_height, &par->con,
-				      &par->crtc, &init_mode);
-	if (ret)
-		goto err_kms;
-
-	info->var.xres = init_mode->hdisplay;
-	info->var.yres = init_mode->vdisplay;
-
-	/*
-	 * Create buffers and alloc memory
-	 */
-	par->vmalloc = vzalloc(fb_size);
-	if (unlikely(par->vmalloc == NULL)) {
-		ret = -ENOMEM;
-		goto err_free;
-	}
-
-	/*
-	 * Fixed and var
-	 */
-	strcpy(info->fix.id, "svgadrmfb");
-	info->fix.type = FB_TYPE_PACKED_PIXELS;
-	info->fix.visual = FB_VISUAL_TRUECOLOR;
-	info->fix.type_aux = 0;
-	info->fix.xpanstep = 1; /* doing it in hw */
-	info->fix.ypanstep = 1; /* doing it in hw */
-	info->fix.ywrapstep = 0;
-	info->fix.accel = FB_ACCEL_NONE;
-	info->fix.line_length = fb_pitch;
-
-	info->fix.smem_start = 0;
-	info->fix.smem_len = fb_size;
-
-	info->pseudo_palette = par->pseudo_palette;
-	info->screen_base = (char __iomem *)par->vmalloc;
-	info->screen_size = fb_size;
-
-	info->fbops = &vmw_fb_ops;
-
-	/* 24 depth per default */
-	info->var.red.offset = 16;
-	info->var.green.offset = 8;
-	info->var.blue.offset = 0;
-	info->var.red.length = 8;
-	info->var.green.length = 8;
-	info->var.blue.length = 8;
-	info->var.transp.offset = 0;
-	info->var.transp.length = 0;
-
-	info->var.xres_virtual = fb_width;
-	info->var.yres_virtual = fb_height;
-	info->var.bits_per_pixel = fb_bpp;
-	info->var.xoffset = 0;
-	info->var.yoffset = 0;
-	info->var.activate = FB_ACTIVATE_NOW;
-	info->var.height = -1;
-	info->var.width = -1;
-
-	/* Use default scratch pixmap (info->pixmap.flags = FB_PIXMAP_SYSTEM) */
-	info->apertures = alloc_apertures(1);
-	if (!info->apertures) {
-		ret = -ENOMEM;
-		goto err_aper;
-	}
-	info->apertures->ranges[0].base = vmw_priv->vram_start;
-	info->apertures->ranges[0].size = vmw_priv->vram_size;
-
-	/*
-	 * Dirty & Deferred IO
-	 */
-	par->dirty.x1 = par->dirty.x2 = 0;
-	par->dirty.y1 = par->dirty.y2 = 0;
-	par->dirty.active = true;
-	spin_lock_init(&par->dirty.lock);
-	mutex_init(&par->bo_mutex);
-	info->fbdefio = &vmw_defio;
-	fb_deferred_io_init(info);
-
-	ret = register_framebuffer(info);
-	if (unlikely(ret != 0))
-		goto err_defio;
-
-	vmw_fb_set_par(info);
-
-	return 0;
-
-err_defio:
-	fb_deferred_io_cleanup(info);
-err_aper:
-err_free:
-	vfree(par->vmalloc);
-err_kms:
-	framebuffer_release(info);
-	vmw_priv->fb_info = NULL;
-
-	return ret;
-}
-
-int vmw_fb_close(struct vmw_private *vmw_priv)
-{
-	struct fb_info *info;
-	struct vmw_fb_par *par;
-
-	if (!vmw_priv->fb_info)
-		return 0;
-
-	info = vmw_priv->fb_info;
-	par = info->par;
-
-	/* ??? order */
-	fb_deferred_io_cleanup(info);
-	cancel_delayed_work_sync(&par->local_work);
-	unregister_framebuffer(info);
-
-	mutex_lock(&par->bo_mutex);
-	(void) vmw_fb_kms_detach(par, true, true);
-	mutex_unlock(&par->bo_mutex);
-
-	vfree(par->vmalloc);
-	framebuffer_release(info);
-
-	return 0;
-}
-
-int vmw_fb_off(struct vmw_private *vmw_priv)
-{
-	struct fb_info *info;
-	struct vmw_fb_par *par;
-	unsigned long flags;
-
-	if (!vmw_priv->fb_info)
-		return -EINVAL;
-
-	info = vmw_priv->fb_info;
-	par = info->par;
-
-	spin_lock_irqsave(&par->dirty.lock, flags);
-	par->dirty.active = false;
-	spin_unlock_irqrestore(&par->dirty.lock, flags);
-
-	flush_delayed_work(&info->deferred_work);
-	flush_delayed_work(&par->local_work);
-
-	return 0;
-}
-
-int vmw_fb_on(struct vmw_private *vmw_priv)
-{
-	struct fb_info *info;
-	struct vmw_fb_par *par;
-	unsigned long flags;
-
-	if (!vmw_priv->fb_info)
-		return -EINVAL;
-
-	info = vmw_priv->fb_info;
-	par = info->par;
-
-	spin_lock_irqsave(&par->dirty.lock, flags);
-	par->dirty.active = true;
-	spin_unlock_irqrestore(&par->dirty.lock, flags);
-
-	/*
-	 * Need to reschedule a dirty update, because otherwise that's
-	 * only done in dirty_mark() if the previous coalesced
-	 * dirty region was empty.
-	 */
-	schedule_delayed_work(&par->local_work, 0);
-
-	return 0;
-}
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_kms.c b/drivers/gpu/drm/vmwgfx/vmwgfx_kms.c
index ff79668ad334..3153e3b4c8fc 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_kms.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_kms.c
@@ -2372,8 +2372,8 @@ static int vmw_du_update_layout(struct vmw_private *dev_priv,
 			du->gui_x = rects[du->unit].x1;
 			du->gui_y = rects[du->unit].y1;
 		} else {
-			du->pref_width = 800;
-			du->pref_height = 600;
+			du->pref_width  = VMWGFX_MIN_INITIAL_WIDTH;
+			du->pref_height = VMWGFX_MIN_INITIAL_HEIGHT;
 			du->pref_active = false;
 			du->gui_x = 0;
 			du->gui_y = 0;
@@ -2400,13 +2400,13 @@ static int vmw_du_update_layout(struct vmw_private *dev_priv,
 		}
 		con->status = vmw_du_connector_detect(con, true);
 	}
-
-	drm_sysfs_hotplug_event(dev);
 out_fini:
 	drm_modeset_drop_locks(&ctx);
 	drm_modeset_acquire_fini(&ctx);
 	mutex_unlock(&dev->mode_config.mutex);
 
+	drm_sysfs_hotplug_event(dev);
+
 	return 0;
 }
 
@@ -2686,10 +2686,9 @@ int vmw_kms_update_layout_ioctl(struct drm_device *dev, void *data,
 	int ret, i;
 
 	if (!arg->num_outputs) {
-		struct drm_rect def_rect = {0, 0, 800, 600};
-		VMW_DEBUG_KMS("Default layout x1 = %d y1 = %d x2 = %d y2 = %d\n",
-			      def_rect.x1, def_rect.y1,
-			      def_rect.x2, def_rect.y2);
+		struct drm_rect def_rect = {0, 0,
+					    VMWGFX_MIN_INITIAL_WIDTH,
+					    VMWGFX_MIN_INITIAL_HEIGHT};
 		vmw_du_update_layout(dev_priv, 1, &def_rect);
 		return 0;
 	}
@@ -2984,68 +2983,6 @@ int vmw_kms_update_proxy(struct vmw_resource *res,
 	return 0;
 }
 
-int vmw_kms_fbdev_init_data(struct vmw_private *dev_priv,
-			    unsigned unit,
-			    u32 max_width,
-			    u32 max_height,
-			    struct drm_connector **p_con,
-			    struct drm_crtc **p_crtc,
-			    struct drm_display_mode **p_mode)
-{
-	struct drm_connector *con;
-	struct vmw_display_unit *du;
-	struct drm_display_mode *mode;
-	int i = 0;
-	int ret = 0;
-
-	mutex_lock(&dev_priv->drm.mode_config.mutex);
-	list_for_each_entry(con, &dev_priv->drm.mode_config.connector_list,
-			    head) {
-		if (i == unit)
-			break;
-
-		++i;
-	}
-
-	if (&con->head == &dev_priv->drm.mode_config.connector_list) {
-		DRM_ERROR("Could not find initial display unit.\n");
-		ret = -EINVAL;
-		goto out_unlock;
-	}
-
-	if (list_empty(&con->modes))
-		(void) vmw_du_connector_fill_modes(con, max_width, max_height);
-
-	if (list_empty(&con->modes)) {
-		DRM_ERROR("Could not find initial display mode.\n");
-		ret = -EINVAL;
-		goto out_unlock;
-	}
-
-	du = vmw_connector_to_du(con);
-	*p_con = con;
-	*p_crtc = &du->crtc;
-
-	list_for_each_entry(mode, &con->modes, head) {
-		if (mode->type & DRM_MODE_TYPE_PREFERRED)
-			break;
-	}
-
-	if (&mode->head == &con->modes) {
-		WARN_ONCE(true, "Could not find initial preferred mode.\n");
-		*p_mode = list_first_entry(&con->modes,
-					   struct drm_display_mode,
-					   head);
-	} else {
-		*p_mode = mode;
-	}
-
- out_unlock:
-	mutex_unlock(&dev_priv->drm.mode_config.mutex);
-
-	return ret;
-}
-
 /**
  * vmw_kms_create_implicit_placement_property - Set up the implicit placement
  * property.
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_kms.h b/drivers/gpu/drm/vmwgfx/vmwgfx_kms.h
index 13a265ffd9f8..4d6e7b555db7 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_kms.h
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_kms.h
@@ -462,13 +462,6 @@ vmw_kms_new_framebuffer(struct vmw_private *dev_priv,
 			struct vmw_surface *surface,
 			bool only_2d,
 			const struct drm_mode_fb_cmd2 *mode_cmd);
-int vmw_kms_fbdev_init_data(struct vmw_private *dev_priv,
-			    unsigned unit,
-			    u32 max_width,
-			    u32 max_height,
-			    struct drm_connector **p_con,
-			    struct drm_crtc **p_crtc,
-			    struct drm_display_mode **p_mode);
 void vmw_guess_mode_timing(struct drm_display_mode *mode);
 void vmw_kms_update_implicit_fb(struct vmw_private *dev_priv);
 void vmw_kms_create_implicit_placement_property(struct vmw_private *dev_priv);
-- 
2.34.1

[PATCH v2 14/16] drm/vmwgfx: Remove explicit and broken vblank handling

[Zack Rusin]

From: Zack Rusin <zackr@vmware.com>

The explicit vblank handling was never finished. The driver never had
the full implementation of vblank and what was there is emulated
by DRM when the driver doesn't pretend to be implementing it itself.

Let DRM handle the vblank emulation and stop pretending the driver is
doing anything special with vblank. In the future it would make sense
to implement helpers for full vblank handling because vkms and
amdgpu_vkms already have that code. Exporting it to common helpers and
having all three drivers share it would make sense (that would be largely
just to allow more of igt to run).

Signed-off-by: Zack Rusin <zackr@vmware.com>
Reviewed-by: Maaz Mombasawala <mombasawalam@vmware.com>
Reviewed-by: Martin Krastev <krastevm@vmware.com>
Reviewed-by: Michael Banack <banackm@vmware.com>
---
 drivers/gpu/drm/vmwgfx/vmwgfx_drv.h  |  3 ---
 drivers/gpu/drm/vmwgfx/vmwgfx_kms.c  | 34 ----------------------------
 drivers/gpu/drm/vmwgfx/vmwgfx_ldu.c  |  8 -------
 drivers/gpu/drm/vmwgfx/vmwgfx_scrn.c | 31 +------------------------
 drivers/gpu/drm/vmwgfx/vmwgfx_stdu.c | 26 ---------------------
 5 files changed, 1 insertion(+), 101 deletions(-)

diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h
index ad470e54d586..4eb7339dd121 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h
@@ -1208,9 +1208,6 @@ int vmw_kms_write_svga(struct vmw_private *vmw_priv,
 bool vmw_kms_validate_mode_vram(struct vmw_private *dev_priv,
 				uint32_t pitch,
 				uint32_t height);
-u32 vmw_get_vblank_counter(struct drm_crtc *crtc);
-int vmw_enable_vblank(struct drm_crtc *crtc);
-void vmw_disable_vblank(struct drm_crtc *crtc);
 int vmw_kms_present(struct vmw_private *dev_priv,
 		    struct drm_file *file_priv,
 		    struct vmw_framebuffer *vfb,
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_kms.c b/drivers/gpu/drm/vmwgfx/vmwgfx_kms.c
index 3153e3b4c8fc..36c98ba3c87e 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_kms.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_kms.c
@@ -31,7 +31,6 @@
 #include <drm/drm_fourcc.h>
 #include <drm/drm_rect.h>
 #include <drm/drm_sysfs.h>
-#include <drm/drm_vblank.h>
 
 #include "vmwgfx_kms.h"
 
@@ -981,15 +980,6 @@ void vmw_du_crtc_atomic_begin(struct drm_crtc *crtc,
 void vmw_du_crtc_atomic_flush(struct drm_crtc *crtc,
 			      struct drm_atomic_state *state)
 {
-	struct drm_pending_vblank_event *event = crtc->state->event;
-
-	if (event) {
-		crtc->state->event = NULL;
-
-		spin_lock_irq(&crtc->dev->event_lock);
-		drm_crtc_send_vblank_event(crtc, event);
-		spin_unlock_irq(&crtc->dev->event_lock);
-	}
 }
 
 
@@ -2305,30 +2295,6 @@ bool vmw_kms_validate_mode_vram(struct vmw_private *dev_priv,
 		 dev_priv->max_primary_mem : dev_priv->vram_size);
 }
 
-
-/*
- * Function called by DRM code called with vbl_lock held.
- */
-u32 vmw_get_vblank_counter(struct drm_crtc *crtc)
-{
-	return 0;
-}
-
-/*
- * Function called by DRM code called with vbl_lock held.
- */
-int vmw_enable_vblank(struct drm_crtc *crtc)
-{
-	return -EINVAL;
-}
-
-/*
- * Function called by DRM code called with vbl_lock held.
- */
-void vmw_disable_vblank(struct drm_crtc *crtc)
-{
-}
-
 /**
  * vmw_du_update_layout - Update the display unit with topology from resolution
  * plugin and generate DRM uevent
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_ldu.c b/drivers/gpu/drm/vmwgfx/vmwgfx_ldu.c
index b8761f16dd78..a56e5d0ca3c6 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_ldu.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_ldu.c
@@ -28,7 +28,6 @@
 #include <drm/drm_atomic.h>
 #include <drm/drm_atomic_helper.h>
 #include <drm/drm_fourcc.h>
-#include <drm/drm_vblank.h>
 
 #include "vmwgfx_kms.h"
 
@@ -235,9 +234,6 @@ static const struct drm_crtc_funcs vmw_legacy_crtc_funcs = {
 	.atomic_duplicate_state = vmw_du_crtc_duplicate_state,
 	.atomic_destroy_state = vmw_du_crtc_destroy_state,
 	.set_config = drm_atomic_helper_set_config,
-	.get_vblank_counter = vmw_get_vblank_counter,
-	.enable_vblank = vmw_enable_vblank,
-	.disable_vblank = vmw_disable_vblank,
 };
 
 
@@ -507,10 +503,6 @@ int vmw_kms_ldu_init_display(struct vmw_private *dev_priv)
 	dev_priv->ldu_priv->last_num_active = 0;
 	dev_priv->ldu_priv->fb = NULL;
 
-	ret = drm_vblank_init(dev, num_display_units);
-	if (ret != 0)
-		goto err_free;
-
 	vmw_kms_create_implicit_placement_property(dev_priv);
 
 	for (i = 0; i < num_display_units; ++i) {
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_scrn.c b/drivers/gpu/drm/vmwgfx/vmwgfx_scrn.c
index ecd3c2fc978b..8db61c541a80 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_scrn.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_scrn.c
@@ -29,7 +29,6 @@
 #include <drm/drm_atomic_helper.h>
 #include <drm/drm_damage_helper.h>
 #include <drm/drm_fourcc.h>
-#include <drm/drm_vblank.h>
 
 #include "vmwgfx_kms.h"
 
@@ -320,9 +319,6 @@ static const struct drm_crtc_funcs vmw_screen_object_crtc_funcs = {
 	.atomic_destroy_state = vmw_du_crtc_destroy_state,
 	.set_config = drm_atomic_helper_set_config,
 	.page_flip = drm_atomic_helper_page_flip,
-	.get_vblank_counter = vmw_get_vblank_counter,
-	.enable_vblank = vmw_enable_vblank,
-	.disable_vblank = vmw_disable_vblank,
 };
 
 /*
@@ -730,7 +726,6 @@ vmw_sou_primary_plane_atomic_update(struct drm_plane *plane,
 	struct drm_plane_state *old_state = drm_atomic_get_old_plane_state(state, plane);
 	struct drm_plane_state *new_state = drm_atomic_get_new_plane_state(state, plane);
 	struct drm_crtc *crtc = new_state->crtc;
-	struct drm_pending_vblank_event *event = NULL;
 	struct vmw_fence_obj *fence = NULL;
 	int ret;
 
@@ -754,24 +749,6 @@ vmw_sou_primary_plane_atomic_update(struct drm_plane *plane,
 		return;
 	}
 
-	/* For error case vblank event is send from vmw_du_crtc_atomic_flush */
-	event = crtc->state->event;
-	if (event && fence) {
-		struct drm_file *file_priv = event->base.file_priv;
-
-		ret = vmw_event_fence_action_queue(file_priv,
-						   fence,
-						   &event->base,
-						   &event->event.vbl.tv_sec,
-						   &event->event.vbl.tv_usec,
-						   true);
-
-		if (unlikely(ret != 0))
-			DRM_ERROR("Failed to queue event on fence.\n");
-		else
-			crtc->state->event = NULL;
-	}
-
 	if (fence)
 		vmw_fence_obj_unreference(&fence);
 }
@@ -947,18 +924,12 @@ static int vmw_sou_init(struct vmw_private *dev_priv, unsigned unit)
 int vmw_kms_sou_init_display(struct vmw_private *dev_priv)
 {
 	struct drm_device *dev = &dev_priv->drm;
-	int i, ret;
+	int i;
 
 	if (!(dev_priv->capabilities & SVGA_CAP_SCREEN_OBJECT_2)) {
 		return -ENOSYS;
 	}
 
-	ret = -ENOMEM;
-
-	ret = drm_vblank_init(dev, VMWGFX_NUM_DISPLAY_UNITS);
-	if (unlikely(ret != 0))
-		return ret;
-
 	for (i = 0; i < VMWGFX_NUM_DISPLAY_UNITS; ++i)
 		vmw_sou_init(dev_priv, i);
 
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_stdu.c b/drivers/gpu/drm/vmwgfx/vmwgfx_stdu.c
index 8650c3aea8f0..0090abe89254 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_stdu.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_stdu.c
@@ -29,7 +29,6 @@
 #include <drm/drm_atomic_helper.h>
 #include <drm/drm_damage_helper.h>
 #include <drm/drm_fourcc.h>
-#include <drm/drm_vblank.h>
 
 #include "vmwgfx_kms.h"
 #include "vmw_surface_cache.h"
@@ -925,9 +924,6 @@ static const struct drm_crtc_funcs vmw_stdu_crtc_funcs = {
 	.atomic_destroy_state = vmw_du_crtc_destroy_state,
 	.set_config = drm_atomic_helper_set_config,
 	.page_flip = drm_atomic_helper_page_flip,
-	.get_vblank_counter = vmw_get_vblank_counter,
-	.enable_vblank = vmw_enable_vblank,
-	.disable_vblank = vmw_disable_vblank,
 };
 
 
@@ -1591,7 +1587,6 @@ vmw_stdu_primary_plane_atomic_update(struct drm_plane *plane,
 	struct vmw_plane_state *vps = vmw_plane_state_to_vps(new_state);
 	struct drm_crtc *crtc = new_state->crtc;
 	struct vmw_screen_target_display_unit *stdu;
-	struct drm_pending_vblank_event *event;
 	struct vmw_fence_obj *fence = NULL;
 	struct vmw_private *dev_priv;
 	int ret;
@@ -1640,23 +1635,6 @@ vmw_stdu_primary_plane_atomic_update(struct drm_plane *plane,
 		return;
 	}
 
-	/* In case of error, vblank event is send in vmw_du_crtc_atomic_flush */
-	event = crtc->state->event;
-	if (event && fence) {
-		struct drm_file *file_priv = event->base.file_priv;
-
-		ret = vmw_event_fence_action_queue(file_priv,
-						   fence,
-						   &event->base,
-						   &event->event.vbl.tv_sec,
-						   &event->event.vbl.tv_usec,
-						   true);
-		if (ret)
-			DRM_ERROR("Failed to queue event on fence.\n");
-		else
-			crtc->state->event = NULL;
-	}
-
 	if (fence)
 		vmw_fence_obj_unreference(&fence);
 }
@@ -1883,10 +1861,6 @@ int vmw_kms_stdu_init_display(struct vmw_private *dev_priv)
 	if (!(dev_priv->capabilities & SVGA_CAP_GBOBJECTS))
 		return -ENOSYS;
 
-	ret = drm_vblank_init(dev, VMWGFX_NUM_DISPLAY_UNITS);
-	if (unlikely(ret != 0))
-		return ret;
-
 	dev_priv->active_display_unit = vmw_du_screen_target;
 
 	for (i = 0; i < VMWGFX_NUM_DISPLAY_UNITS; ++i) {
-- 
2.34.1

[PATCH v2 15/16] drm/vmwgfx: Add a mksstat counter for cotable resizes

[Zack Rusin]

From: Zack Rusin <zackr@vmware.com>

There's been a lot of cotable resizes on startup which we can track
by adding a mks stat to measure both the invocation count and
time spent doing cotable resizes.

This is only used if kernel is configured with CONFIG_DRM_VMWGFX_MKSSTATS
The stats are collected on the host size inside the vmware-stats.log
file.

Signed-off-by: Zack Rusin <zackr@vmware.com>
Reviewed-by: Michael Banack <banackm@vmware.com>
Reviewed-by: Martin Krastev <krastevm@vmware.com>
Reviewed-by: Maaz Mombasawala <mombasawalam@vmware.com>
---
 drivers/gpu/drm/vmwgfx/vmwgfx_cotable.c | 13 +++++++++++--
 drivers/gpu/drm/vmwgfx/vmwgfx_mksstat.h |  2 ++
 drivers/gpu/drm/vmwgfx/vmwgfx_msg.c     | 16 +++++++++-------
 3 files changed, 22 insertions(+), 9 deletions(-)

diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_cotable.c b/drivers/gpu/drm/vmwgfx/vmwgfx_cotable.c
index 79b30dc9d825..a4c30f950d7c 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_cotable.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_cotable.c
@@ -33,6 +33,7 @@
 #include <drm/ttm/ttm_placement.h>
 
 #include "vmwgfx_drv.h"
+#include "vmwgfx_mksstat.h"
 #include "vmwgfx_resource_priv.h"
 #include "vmwgfx_so.h"
 
@@ -395,9 +396,12 @@ static int vmw_cotable_resize(struct vmw_resource *res, size_t new_size)
 	int ret;
 	size_t i;
 
+	MKS_STAT_TIME_DECL(MKSSTAT_KERN_COTABLE_RESIZE);
+	MKS_STAT_TIME_PUSH(MKSSTAT_KERN_COTABLE_RESIZE);
+
 	ret = vmw_cotable_readback(res);
 	if (ret)
-		return ret;
+		goto out_done;
 
 	cur_size_read_back = vcotbl->size_read_back;
 	vcotbl->size_read_back = old_size_read_back;
@@ -411,7 +415,7 @@ static int vmw_cotable_resize(struct vmw_resource *res, size_t new_size)
 			    true, true, vmw_bo_bo_free, &buf);
 	if (ret) {
 		DRM_ERROR("Failed initializing new cotable MOB.\n");
-		return ret;
+		goto out_done;
 	}
 
 	bo = &buf->base;
@@ -485,6 +489,8 @@ static int vmw_cotable_resize(struct vmw_resource *res, size_t new_size)
 	/* Release the pin acquired in vmw_bo_init */
 	ttm_bo_unpin(bo);
 
+	MKS_STAT_TIME_POP(MKSSTAT_KERN_COTABLE_RESIZE);
+
 	return 0;
 
 out_map_new:
@@ -494,6 +500,9 @@ static int vmw_cotable_resize(struct vmw_resource *res, size_t new_size)
 	ttm_bo_unreserve(bo);
 	vmw_bo_unreference(&buf);
 
+out_done:
+	MKS_STAT_TIME_POP(MKSSTAT_KERN_COTABLE_RESIZE);
+
 	return ret;
 }
 
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_mksstat.h b/drivers/gpu/drm/vmwgfx/vmwgfx_mksstat.h
index 0509f55f07b4..ede74c7fdbbf 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_mksstat.h
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_mksstat.h
@@ -29,6 +29,7 @@
 #define _VMWGFX_MKSSTAT_H_
 
 #include <asm/page.h>
+#include <linux/kconfig.h>
 
 /* Reservation marker for mksstat pid's */
 #define MKSSTAT_PID_RESERVED -1
@@ -41,6 +42,7 @@
 
 typedef enum {
 	MKSSTAT_KERN_EXECBUF, /* vmw_execbuf_ioctl */
+	MKSSTAT_KERN_COTABLE_RESIZE,
 
 	MKSSTAT_KERN_COUNT /* Reserved entry; always last */
 } mksstat_kern_stats_t;
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_msg.c b/drivers/gpu/drm/vmwgfx/vmwgfx_msg.c
index a6cea35eaa01..8700d038d74d 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_msg.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_msg.c
@@ -85,7 +85,14 @@ struct rpc_channel {
 	u32 cookie_low;
 };
 
-
+#if IS_ENABLED(CONFIG_DRM_VMWGFX_MKSSTATS)
+/* Kernel mksGuestStats counter names and desciptions; same order as enum mksstat_kern_stats_t */
+static const char* const mksstat_kern_name_desc[MKSSTAT_KERN_COUNT][2] =
+{
+	{ "vmw_execbuf_ioctl", "vmw_execbuf_ioctl" },
+	{ "vmw_cotable_resize", "vmw_cotable_resize" },
+};
+#endif
 
 /**
  * vmw_open_channel
@@ -695,12 +702,6 @@ static inline void hypervisor_ppn_remove(PPN64 pfn)
 /* Header to the text description of mksGuestStat instance descriptor */
 #define MKSSTAT_KERNEL_DESCRIPTION "vmwgfx"
 
-/* Kernel mksGuestStats counter names and desciptions; same order as enum mksstat_kern_stats_t */
-static const char* const mksstat_kern_name_desc[MKSSTAT_KERN_COUNT][2] =
-{
-	{ "vmw_execbuf_ioctl", "vmw_execbuf_ioctl" },
-};
-
 /**
  * mksstat_init_record: Initializes an MKSGuestStatCounter-based record
  * for the respective mksGuestStat index.
@@ -786,6 +787,7 @@ static int mksstat_init_kern_id(struct page **ppage)
 	/* Set up all kernel-internal counters and corresponding structures */
 	pstrs_acc = pstrs;
 	pstrs_acc = mksstat_init_record_time(MKSSTAT_KERN_EXECBUF, pstat, pinfo, pstrs_acc);
+	pstrs_acc = mksstat_init_record_time(MKSSTAT_KERN_COTABLE_RESIZE, pstat, pinfo, pstrs_acc);
 
 	/* Add new counters above, in their order of appearance in mksstat_kern_stats_t */
 
-- 
2.34.1

[PATCH v2 16/16] drm/vmwgfx: Optimize initial sizes of cotables

[Zack Rusin]

From: Zack Rusin <zackr@vmware.com>

It's important to get the initial size of cotables right because
otherwise every app needs to start with a synchronous cotable resize.

This has an measurable impact on system wide performance but is not
relevant for long running single full screen apps for which the cotable
resizes will happen early in the lifecycle and will continue running
just fine.

To eliminate the initial cotable resizes match the initial sizes to what
the userspace expects. The actual result of the patch is simply setting
the initial size of two of the cotables to a size that will align them
to two pages instead of one.

For a piglit run, before:
name               |  total |  per frame | per sec
vmw_cotable_resize |   1405 |       0.12 |    1.58
vmw_execbuf_ioctl  | 290805 |      25.43 |  326.05

After:
name               |  total |  per frame | per sec
vmw_cotable_resize |      4 |       0.00 |    0.00
vmw_execbuf_ioctl  | 281673 |      25.10 |  274.68

Signed-off-by: Zack Rusin <zackr@vmware.com>
Reviewed-by: Michael Banack <banackm@vmware.com>
---
 drivers/gpu/drm/vmwgfx/vmwgfx_cotable.c | 16 ++++++++++++++--
 1 file changed, 14 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_cotable.c b/drivers/gpu/drm/vmwgfx/vmwgfx_cotable.c
index a4c30f950d7c..0422b6b89cc1 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_cotable.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_cotable.c
@@ -73,12 +73,24 @@ struct vmw_cotable_info {
 			    bool);
 };
 
+
+/*
+ * Getting the initial size right is difficult because it all depends
+ * on what the userspace is doing. The sizes will be aligned up to
+ * a PAGE_SIZE so we just want to make sure that for majority of apps
+ * the initial number of entries doesn't require an immediate resize.
+ * For all cotables except SVGACOTableDXElementLayoutEntry and
+ * SVGACOTableDXBlendStateEntry the initial number of entries fits
+ * within the PAGE_SIZE. For SVGACOTableDXElementLayoutEntry and
+ * SVGACOTableDXBlendStateEntry we want to reserve two pages,
+ * because that's what all apps will require initially.
+ */
 static const struct vmw_cotable_info co_info[] = {
 	{1, sizeof(SVGACOTableDXRTViewEntry), &vmw_view_cotable_list_destroy},
 	{1, sizeof(SVGACOTableDXDSViewEntry), &vmw_view_cotable_list_destroy},
 	{1, sizeof(SVGACOTableDXSRViewEntry), &vmw_view_cotable_list_destroy},
-	{1, sizeof(SVGACOTableDXElementLayoutEntry), NULL},
-	{1, sizeof(SVGACOTableDXBlendStateEntry), NULL},
+	{PAGE_SIZE/sizeof(SVGACOTableDXElementLayoutEntry) + 1, sizeof(SVGACOTableDXElementLayoutEntry), NULL},
+	{PAGE_SIZE/sizeof(SVGACOTableDXBlendStateEntry) + 1, sizeof(SVGACOTableDXBlendStateEntry), NULL},
 	{1, sizeof(SVGACOTableDXDepthStencilEntry), NULL},
 	{1, sizeof(SVGACOTableDXRasterizerStateEntry), NULL},
 	{1, sizeof(SVGACOTableDXSamplerEntry), NULL},
-- 
2.34.1

Re: [PATCH v2 13/16] drm/vmwgfx: Port the framebuffer code to drm fb helpers

[Thomas Zimmermann]

[-- Attachment #1.1: Type: text/plain, Size: 2252 bytes --]

Hi Zack

Am 20.10.22 um 05:41 schrieb Zack Rusin:
> From: Zack Rusin <zackr@vmware.com>
[...]
> @@ -1670,6 +1640,10 @@ static int vmw_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
>   	if (ret)
>   		goto out_unload;
>   
> +	vmw_fifo_resource_inc(vmw);
> +	vmw_svga_enable(vmw);
> +	drm_fbdev_generic_setup(&vmw->drm,  vmw->assume_16bpp ? 16 : 32);

The preferred way of setting the color depth is with struct 
drm_mode_config.preferred_depth. [1] Note that it is the color depth; 
not the pixel size. In your case:

if (vmw->assume_16bpp)
	dev->mode_config.preferred_depth = 16;
else
	dev->mode_config.preferred_depth = 24;

It's also a hint to userspace. [2]

The prefer_bpp parameter of drm_fbdev_generic_setup() should be 0. It is 
a fallback to force a certain pixel size, as preferred_depth fails.

[1] 
https://elixir.bootlin.com/linux/v6.1-rc1/source/include/drm/drm_mode_config.h#L883
[2] 
https://elixir.bootlin.com/linux/v6.1-rc1/source/drivers/gpu/drm/drm_ioctl.c#L272

> +
>   	vmw_debugfs_gem_init(vmw);
>   	vmw_debugfs_resource_managers_init(vmw);
>   
[...]
> -
> -/**
> - * vmw_fb_dirty_flush - flush dirty regions to the kms framebuffer
> - *
> - * @work: The struct work_struct associated with this task.
> - *
> - * This function flushes the dirty regions of the vmalloc framebuffer to the
> - * kms framebuffer, and if the kms framebuffer is visible, also updated the
> - * corresponding displays. Note that this function runs even if the kms
> - * framebuffer is not bound to a crtc and thus not visible, but it's turned
> - * off during hibernation using the par->dirty.active bool.
> - */
> -static void vmw_fb_dirty_flush(struct work_struct *work)

This is the flush function for vmwgfx' deferred I/O. If you want to 
implement deferred I/O with the generic fbdev emulation, you have to set 
struct drm_mode_config.prefer_shadow_fbdev to true. [3]

[3] 
https://elixir.bootlin.com/linux/v6.1-rc1/source/include/drm/drm_mode_config.h#L890

Best regards
Thomas


-- 
Thomas Zimmermann
Graphics Driver Developer
SUSE Software Solutions Germany GmbH
Maxfeldstr. 5, 90409 Nürnberg, Germany
(HRB 36809, AG Nürnberg)
Geschäftsführer: Ivo Totev

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Re: [PATCH v2 13/16] drm/vmwgfx: Port the framebuffer code to drm fb helpers

[Zack Rusin]

On Thu, 2022-10-20 at 11:06 +0200, Thomas Zimmermann wrote:
> Hi Zack
> 
> Am 20.10.22 um 05:41 schrieb Zack Rusin:
> > From: Zack Rusin <zackr@vmware.com>
> [...]
> > @@ -1670,6 +1640,10 @@ static int vmw_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
> >   	if (ret)
> >   		goto out_unload;
> >   
> > +	vmw_fifo_resource_inc(vmw);
> > +	vmw_svga_enable(vmw);
> > +	drm_fbdev_generic_setup(&vmw->drm,  vmw->assume_16bpp ? 16 : 32);
> 
> The preferred way of setting the color depth is with struct 
> drm_mode_config.preferred_depth. [1] Note that it is the color depth; 
> not the pixel size. In your case:
> 
> if (vmw->assume_16bpp)
> 	dev->mode_config.preferred_depth = 16;
> else
> 	dev->mode_config.preferred_depth = 24;
> 
> It's also a hint to userspace. [2]
> 
> The prefer_bpp parameter of drm_fbdev_generic_setup() should be 0. It is 
> a fallback to force a certain pixel size, as preferred_depth fails.
> 

Ah, that makes sense. I'll fix that, btw, the dev->mode_config.preferred_depth = 24
part, we should probably have some check in drm_fbdev_generic_setup that it is not
24. 

That's because 24 will invoke the buggy code in drm fbdev helpers that confuses
depth and bpp and will endup invoking dumb create with args->bpp == 24 and that's
specifically disallowed for dumb_create. IGT's has explicit
(dumb_buffer::invalid_bpp) test that checks whether dumb_create with bpp == 24
fails. An earlier commit in this series actually fixes that specific test in vmwgfx.
A lot of drivers will work because even though they set preferred_depth to 24, they
call the  dev->mode_config.preferred_depth = 24 call drm_fbdev_generic_setup with 32
but it's definitely confusing.

> 
> > +
> >   	vmw_debugfs_gem_init(vmw);
> >   	vmw_debugfs_resource_managers_init(vmw);
> >   
> [...]
> > -
> > -/**
> > - * vmw_fb_dirty_flush - flush dirty regions to the kms framebuffer
> > - *
> > - * @work: The struct work_struct associated with this task.
> > - *
> > - * This function flushes the dirty regions of the vmalloc framebuffer to the
> > - * kms framebuffer, and if the kms framebuffer is visible, also updated the
> > - * corresponding displays. Note that this function runs even if the kms
> > - * framebuffer is not bound to a crtc and thus not visible, but it's turned
> > - * off during hibernation using the par->dirty.active bool.
> > - */
> > -static void vmw_fb_dirty_flush(struct work_struct *work)
> 
> This is the flush function for vmwgfx' deferred I/O. If you want to 
> implement deferred I/O with the generic fbdev emulation, you have to set 
> struct drm_mode_config.prefer_shadow_fbdev to true. [3]

Yea, we don't need it anymore. But it probably is a good idea to preserve the old
behaviour for systems that didn't have guest backed memory support. I'll adjust
that. Thanks for taking a look at this!

z

Re: [PATCH v2 13/16] drm/vmwgfx: Port the framebuffer code to drm fb helpers

[Thomas Zimmermann]

[-- Attachment #1.1: Type: text/plain, Size: 3491 bytes --]

Hi

Am 20.10.22 um 20:37 schrieb Zack Rusin:
> On Thu, 2022-10-20 at 11:06 +0200, Thomas Zimmermann wrote:
>> Hi Zack
>>
>> Am 20.10.22 um 05:41 schrieb Zack Rusin:
>>> From: Zack Rusin <zackr@vmware.com>
>> [...]
>>> @@ -1670,6 +1640,10 @@ static int vmw_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
>>>    	if (ret)
>>>    		goto out_unload;
>>>    
>>> +	vmw_fifo_resource_inc(vmw);
>>> +	vmw_svga_enable(vmw);
>>> +	drm_fbdev_generic_setup(&vmw->drm,  vmw->assume_16bpp ? 16 : 32);
>>
>> The preferred way of setting the color depth is with struct
>> drm_mode_config.preferred_depth. [1] Note that it is the color depth;
>> not the pixel size. In your case:
>>
>> if (vmw->assume_16bpp)
>> 	dev->mode_config.preferred_depth = 16;
>> else
>> 	dev->mode_config.preferred_depth = 24;
>>
>> It's also a hint to userspace. [2]
>>
>> The prefer_bpp parameter of drm_fbdev_generic_setup() should be 0. It is
>> a fallback to force a certain pixel size, as preferred_depth fails.
>>
> 
> Ah, that makes sense. I'll fix that, btw, the dev->mode_config.preferred_depth = 24
> part, we should probably have some check in drm_fbdev_generic_setup that it is not
> 24.
> 
> That's because 24 will invoke the buggy code in drm fbdev helpers that confuses
> depth and bpp and will endup invoking dumb create with args->bpp == 24 and that's
> specifically disallowed for dumb_create. IGT's has explicit
> (dumb_buffer::invalid_bpp) test that checks whether dumb_create with bpp == 24
> fails. An earlier commit in this series actually fixes that specific test in vmwgfx.
> A lot of drivers will work because even though they set preferred_depth to 24, they
> call the  dev->mode_config.preferred_depth = 24 call drm_fbdev_generic_setup with 32
> but it's definitely confusing.

Calling drm_fbdev_generic_setup() with 32 is the 'official' workaround 
for the problem. If you run into the bug, it's ok to call the function 
with a bpp value. The whole usage of formats, depth and bpp in fbdev 
helpers is confusing and needs work.

Best regards
Thomas

> 
>>
>>> +
>>>    	vmw_debugfs_gem_init(vmw);
>>>    	vmw_debugfs_resource_managers_init(vmw);
>>>    
>> [...]
>>> -
>>> -/**
>>> - * vmw_fb_dirty_flush - flush dirty regions to the kms framebuffer
>>> - *
>>> - * @work: The struct work_struct associated with this task.
>>> - *
>>> - * This function flushes the dirty regions of the vmalloc framebuffer to the
>>> - * kms framebuffer, and if the kms framebuffer is visible, also updated the
>>> - * corresponding displays. Note that this function runs even if the kms
>>> - * framebuffer is not bound to a crtc and thus not visible, but it's turned
>>> - * off during hibernation using the par->dirty.active bool.
>>> - */
>>> -static void vmw_fb_dirty_flush(struct work_struct *work)
>>
>> This is the flush function for vmwgfx' deferred I/O. If you want to
>> implement deferred I/O with the generic fbdev emulation, you have to set
>> struct drm_mode_config.prefer_shadow_fbdev to true. [3]
> 
> Yea, we don't need it anymore. But it probably is a good idea to preserve the old
> behaviour for systems that didn't have guest backed memory support. I'll adjust
> that. Thanks for taking a look at this!
> 
> z

-- 
Thomas Zimmermann
Graphics Driver Developer
SUSE Software Solutions Germany GmbH
Maxfeldstr. 5, 90409 Nürnberg, Germany
(HRB 36809, AG Nürnberg)
Geschäftsführer: Ivo Totev

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