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/**************************************************************************

 *

 * Copyright © 2009 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 

#include 

#include "vmwgfx_drv.h"

#include 

#include 

#include 

//#include 

#include 

#define VMWGFX_DRIVER_NAME "vmwgfx"

#define VMWGFX_DRIVER_DESC "Linux drm driver for VMware graphics devices"

#define VMWGFX_CHIP_SVGAII 0

#define VMW_FB_RESERVATION 0

#define VMW_MIN_INITIAL_WIDTH 800

#define VMW_MIN_INITIAL_HEIGHT 600

#if 0

/**

 * Fully encoded drm commands. Might move to vmw_drm.h

 */

#define DRM_IOCTL_VMW_GET_PARAM					\

	DRM_IOWR(DRM_COMMAND_BASE + DRM_VMW_GET_PARAM,		\

		 struct drm_vmw_getparam_arg)

#define DRM_IOCTL_VMW_ALLOC_DMABUF				\

	DRM_IOWR(DRM_COMMAND_BASE + DRM_VMW_ALLOC_DMABUF,	\

		union drm_vmw_alloc_dmabuf_arg)

#define DRM_IOCTL_VMW_UNREF_DMABUF				\

	DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_UNREF_DMABUF,	\

		struct drm_vmw_unref_dmabuf_arg)

#define DRM_IOCTL_VMW_CURSOR_BYPASS				\

	DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_CURSOR_BYPASS,	\

		 struct drm_vmw_cursor_bypass_arg)

#define DRM_IOCTL_VMW_CONTROL_STREAM				\

	DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_CONTROL_STREAM,	\

		 struct drm_vmw_control_stream_arg)

#define DRM_IOCTL_VMW_CLAIM_STREAM				\

	DRM_IOR(DRM_COMMAND_BASE + DRM_VMW_CLAIM_STREAM,	\

		 struct drm_vmw_stream_arg)

#define DRM_IOCTL_VMW_UNREF_STREAM				\

	DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_UNREF_STREAM,	\

		 struct drm_vmw_stream_arg)

#define DRM_IOCTL_VMW_CREATE_CONTEXT				\

	DRM_IOR(DRM_COMMAND_BASE + DRM_VMW_CREATE_CONTEXT,	\

		struct drm_vmw_context_arg)

#define DRM_IOCTL_VMW_UNREF_CONTEXT				\

	DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_UNREF_CONTEXT,	\

		struct drm_vmw_context_arg)

#define DRM_IOCTL_VMW_CREATE_SURFACE				\

	DRM_IOWR(DRM_COMMAND_BASE + DRM_VMW_CREATE_SURFACE,	\

		 union drm_vmw_surface_create_arg)

#define DRM_IOCTL_VMW_UNREF_SURFACE				\

	DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_UNREF_SURFACE,	\

		 struct drm_vmw_surface_arg)

#define DRM_IOCTL_VMW_REF_SURFACE				\

	DRM_IOWR(DRM_COMMAND_BASE + DRM_VMW_REF_SURFACE,	\

		 union drm_vmw_surface_reference_arg)

#define DRM_IOCTL_VMW_EXECBUF					\

	DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_EXECBUF,		\

		struct drm_vmw_execbuf_arg)

#define DRM_IOCTL_VMW_GET_3D_CAP				\

	DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_GET_3D_CAP,		\

		 struct drm_vmw_get_3d_cap_arg)

#define DRM_IOCTL_VMW_FENCE_WAIT				\

	DRM_IOWR(DRM_COMMAND_BASE + DRM_VMW_FENCE_WAIT,		\

		 struct drm_vmw_fence_wait_arg)

#define DRM_IOCTL_VMW_FENCE_SIGNALED				\

	DRM_IOWR(DRM_COMMAND_BASE + DRM_VMW_FENCE_SIGNALED,	\

		 struct drm_vmw_fence_signaled_arg)

#define DRM_IOCTL_VMW_FENCE_UNREF				\

	DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_FENCE_UNREF,		\

		 struct drm_vmw_fence_arg)

#define DRM_IOCTL_VMW_FENCE_EVENT				\

	DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_FENCE_EVENT,		\

		 struct drm_vmw_fence_event_arg)

#define DRM_IOCTL_VMW_PRESENT					\

	DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_PRESENT,		\

		 struct drm_vmw_present_arg)

#define DRM_IOCTL_VMW_PRESENT_READBACK				\

	DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_PRESENT_READBACK,	\

		 struct drm_vmw_present_readback_arg)

#define DRM_IOCTL_VMW_UPDATE_LAYOUT				\

	DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_UPDATE_LAYOUT,	\

		 struct drm_vmw_update_layout_arg)

#define DRM_IOCTL_VMW_CREATE_SHADER				\

	DRM_IOWR(DRM_COMMAND_BASE + DRM_VMW_CREATE_SHADER,	\

		 struct drm_vmw_shader_create_arg)

#define DRM_IOCTL_VMW_UNREF_SHADER				\

	DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_UNREF_SHADER,	\

		 struct drm_vmw_shader_arg)

#define DRM_IOCTL_VMW_GB_SURFACE_CREATE				\

	DRM_IOWR(DRM_COMMAND_BASE + DRM_VMW_GB_SURFACE_CREATE,	\

		 union drm_vmw_gb_surface_create_arg)

#define DRM_IOCTL_VMW_GB_SURFACE_REF				\

	DRM_IOWR(DRM_COMMAND_BASE + DRM_VMW_GB_SURFACE_REF,	\

		 union drm_vmw_gb_surface_reference_arg)

#define DRM_IOCTL_VMW_SYNCCPU					\

	DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_SYNCCPU,		\

		 struct drm_vmw_synccpu_arg)

/**

 * The core DRM version of this macro doesn't account for

 * DRM_COMMAND_BASE.

 */

#define VMW_IOCTL_DEF(ioctl, func, flags) \

  [DRM_IOCTL_NR(DRM_IOCTL_##ioctl) - DRM_COMMAND_BASE] = {DRM_##ioctl, flags, func, DRM_IOCTL_##ioctl}

/**

 * Ioctl definitions.

 */

static const struct drm_ioctl_desc vmw_ioctls[] = {

	VMW_IOCTL_DEF(VMW_GET_PARAM, vmw_getparam_ioctl,

		      DRM_AUTH | DRM_UNLOCKED | DRM_RENDER_ALLOW),

	VMW_IOCTL_DEF(VMW_ALLOC_DMABUF, vmw_dmabuf_alloc_ioctl,

		      DRM_AUTH | DRM_UNLOCKED | DRM_RENDER_ALLOW),

	VMW_IOCTL_DEF(VMW_UNREF_DMABUF, vmw_dmabuf_unref_ioctl,

		      DRM_UNLOCKED | DRM_RENDER_ALLOW),

	VMW_IOCTL_DEF(VMW_CURSOR_BYPASS,

		      vmw_kms_cursor_bypass_ioctl,

		      DRM_MASTER | DRM_CONTROL_ALLOW | DRM_UNLOCKED),

	VMW_IOCTL_DEF(VMW_CONTROL_STREAM, vmw_overlay_ioctl,

		      DRM_MASTER | DRM_CONTROL_ALLOW | DRM_UNLOCKED),

	VMW_IOCTL_DEF(VMW_CLAIM_STREAM, vmw_stream_claim_ioctl,

		      DRM_MASTER | DRM_CONTROL_ALLOW | DRM_UNLOCKED),

	VMW_IOCTL_DEF(VMW_UNREF_STREAM, vmw_stream_unref_ioctl,

		      DRM_MASTER | DRM_CONTROL_ALLOW | DRM_UNLOCKED),

	VMW_IOCTL_DEF(VMW_CREATE_CONTEXT, vmw_context_define_ioctl,

		      DRM_AUTH | DRM_UNLOCKED | DRM_RENDER_ALLOW),

	VMW_IOCTL_DEF(VMW_UNREF_CONTEXT, vmw_context_destroy_ioctl,

		      DRM_UNLOCKED | DRM_RENDER_ALLOW),

	VMW_IOCTL_DEF(VMW_CREATE_SURFACE, vmw_surface_define_ioctl,

		      DRM_AUTH | DRM_UNLOCKED | DRM_RENDER_ALLOW),

	VMW_IOCTL_DEF(VMW_UNREF_SURFACE, vmw_surface_destroy_ioctl,

		      DRM_UNLOCKED | DRM_RENDER_ALLOW),

	VMW_IOCTL_DEF(VMW_REF_SURFACE, vmw_surface_reference_ioctl,

		      DRM_AUTH | DRM_UNLOCKED | DRM_RENDER_ALLOW),

	VMW_IOCTL_DEF(VMW_EXECBUF, vmw_execbuf_ioctl,

		      DRM_AUTH | DRM_UNLOCKED | DRM_RENDER_ALLOW),

	VMW_IOCTL_DEF(VMW_FENCE_WAIT, vmw_fence_obj_wait_ioctl,

		      DRM_UNLOCKED | DRM_RENDER_ALLOW),

	VMW_IOCTL_DEF(VMW_FENCE_SIGNALED,

		      vmw_fence_obj_signaled_ioctl,

		      DRM_UNLOCKED | DRM_RENDER_ALLOW),

	VMW_IOCTL_DEF(VMW_FENCE_UNREF, vmw_fence_obj_unref_ioctl,

		      DRM_UNLOCKED | DRM_RENDER_ALLOW),

	VMW_IOCTL_DEF(VMW_FENCE_EVENT, vmw_fence_event_ioctl,

		      DRM_AUTH | DRM_UNLOCKED | DRM_RENDER_ALLOW),

	VMW_IOCTL_DEF(VMW_GET_3D_CAP, vmw_get_cap_3d_ioctl,

		      DRM_AUTH | DRM_UNLOCKED | DRM_RENDER_ALLOW),

	/* these allow direct access to the framebuffers mark as master only */

	VMW_IOCTL_DEF(VMW_PRESENT, vmw_present_ioctl,

		      DRM_MASTER | DRM_AUTH | DRM_UNLOCKED),

	VMW_IOCTL_DEF(VMW_PRESENT_READBACK,

		      vmw_present_readback_ioctl,

		      DRM_MASTER | DRM_AUTH | DRM_UNLOCKED),

	VMW_IOCTL_DEF(VMW_UPDATE_LAYOUT,

		      vmw_kms_update_layout_ioctl,

		      DRM_MASTER | DRM_UNLOCKED),

	VMW_IOCTL_DEF(VMW_CREATE_SHADER,

		      vmw_shader_define_ioctl,

		      DRM_AUTH | DRM_UNLOCKED | DRM_RENDER_ALLOW),

	VMW_IOCTL_DEF(VMW_UNREF_SHADER,

		      vmw_shader_destroy_ioctl,

		      DRM_UNLOCKED | DRM_RENDER_ALLOW),

	VMW_IOCTL_DEF(VMW_GB_SURFACE_CREATE,

		      vmw_gb_surface_define_ioctl,

		      DRM_AUTH | DRM_UNLOCKED | DRM_RENDER_ALLOW),

	VMW_IOCTL_DEF(VMW_GB_SURFACE_REF,

		      vmw_gb_surface_reference_ioctl,

		      DRM_AUTH | DRM_UNLOCKED | DRM_RENDER_ALLOW),

	VMW_IOCTL_DEF(VMW_SYNCCPU,

		      vmw_user_dmabuf_synccpu_ioctl,

		      DRM_UNLOCKED | DRM_RENDER_ALLOW),

};

#endif

static struct pci_device_id vmw_pci_id_list[] = {

	{0x15ad, 0x0405, PCI_ANY_ID, PCI_ANY_ID, 0, 0, VMWGFX_CHIP_SVGAII},

	{0, 0, 0}

};

static int enable_fbdev = 1;

static int vmw_force_iommu;

static int vmw_restrict_iommu;

static int vmw_force_coherent;

static int vmw_restrict_dma_mask;

static int vmw_probe(struct pci_dev *, const struct pci_device_id *);

static void vmw_master_init(struct vmw_master *);

MODULE_PARM_DESC(enable_fbdev, "Enable vmwgfx fbdev");

module_param_named(enable_fbdev, enable_fbdev, int, 0600);

MODULE_PARM_DESC(force_dma_api, "Force using the DMA API for TTM pages");

module_param_named(force_dma_api, vmw_force_iommu, 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");

module_param_named(force_coherent, vmw_force_coherent, int, 0600);

MODULE_PARM_DESC(restrict_dma_mask, "Restrict DMA mask to 44 bits with IOMMU");

module_param_named(restrict_dma_mask, vmw_restrict_dma_mask, int, 0600);

static void vmw_print_capabilities(uint32_t capabilities)

{

	DRM_INFO("Capabilities:\n");

	if (capabilities & SVGA_CAP_RECT_COPY)

		DRM_INFO("  Rect copy.\n");

	if (capabilities & SVGA_CAP_CURSOR)

		DRM_INFO("  Cursor.\n");

	if (capabilities & SVGA_CAP_CURSOR_BYPASS)

		DRM_INFO("  Cursor bypass.\n");

	if (capabilities & SVGA_CAP_CURSOR_BYPASS_2)

		DRM_INFO("  Cursor bypass 2.\n");

	if (capabilities & SVGA_CAP_8BIT_EMULATION)

		DRM_INFO("  8bit emulation.\n");

	if (capabilities & SVGA_CAP_ALPHA_CURSOR)

		DRM_INFO("  Alpha cursor.\n");

	if (capabilities & SVGA_CAP_3D)

		DRM_INFO("  3D.\n");

	if (capabilities & SVGA_CAP_EXTENDED_FIFO)

		DRM_INFO("  Extended Fifo.\n");

	if (capabilities & SVGA_CAP_MULTIMON)

		DRM_INFO("  Multimon.\n");

	if (capabilities & SVGA_CAP_PITCHLOCK)

		DRM_INFO("  Pitchlock.\n");

	if (capabilities & SVGA_CAP_IRQMASK)

		DRM_INFO("  Irq mask.\n");

	if (capabilities & SVGA_CAP_DISPLAY_TOPOLOGY)

		DRM_INFO("  Display Topology.\n");

	if (capabilities & SVGA_CAP_GMR)

		DRM_INFO("  GMR.\n");

	if (capabilities & SVGA_CAP_TRACES)

		DRM_INFO("  Traces.\n");

	if (capabilities & SVGA_CAP_GMR2)

		DRM_INFO("  GMR2.\n");

	if (capabilities & SVGA_CAP_SCREEN_OBJECT_2)

		DRM_INFO("  Screen Object 2.\n");

	if (capabilities & SVGA_CAP_COMMAND_BUFFERS)

		DRM_INFO("  Command Buffers.\n");

	if (capabilities & SVGA_CAP_CMD_BUFFERS_2)

		DRM_INFO("  Command Buffers 2.\n");

	if (capabilities & SVGA_CAP_GBOBJECTS)

		DRM_INFO("  Guest Backed Resources.\n");

}

/**

 * vmw_dummy_query_bo_create - create a bo to hold a dummy query result

 *

 * @dev_priv: A device private structure.

 *

 * This function creates a small buffer object that holds the query

 * result for dummy queries emitted as query barriers.

 * The function will then map the first page and initialize a pending

 * occlusion query result structure, Finally it will unmap the buffer.

 * No interruptible waits are done within this function.

 *

 * Returns an error if bo creation or initialization fails.

 */

static int vmw_dummy_query_bo_create(struct vmw_private *dev_priv)

{

	int ret;

	struct ttm_buffer_object *bo;

	struct ttm_bo_kmap_obj map;

	volatile SVGA3dQueryResult *result;

	bool dummy;

	/*

	 * Create the bo as pinned, so that a tryreserve will

	 * immediately succeed. This is because we're the only

	 * user of the bo currently.

	 */

	ret = ttm_bo_create(&dev_priv->bdev,

			     PAGE_SIZE,

			     ttm_bo_type_device,

			    &vmw_sys_ne_placement,

			     0, false, NULL,

			    &bo);

	if (unlikely(ret != 0))

		return ret;

	ret = ttm_bo_reserve(bo, false, true, false, NULL);

	BUG_ON(ret != 0);

	ret = ttm_bo_kmap(bo, 0, 1, &map);

	if (likely(ret == 0)) {

		result = ttm_kmap_obj_virtual(&map, &dummy);

		result->totalSize = sizeof(*result);

		result->state = SVGA3D_QUERYSTATE_PENDING;

		result->result32 = 0xff;

		ttm_bo_kunmap(&map);

	}

	vmw_bo_pin(bo, false);

	ttm_bo_unreserve(bo);

	if (unlikely(ret != 0)) {

		DRM_ERROR("Dummy query buffer map failed.\n");

		ttm_bo_unref(&bo);

	} else

		dev_priv->dummy_query_bo = bo;

	return ret;

}

static int vmw_request_device(struct vmw_private *dev_priv)

{

	int ret;

	ret = vmw_fifo_init(dev_priv, &dev_priv->fifo);

	if (unlikely(ret != 0)) {

		DRM_ERROR("Unable to initialize FIFO.\n");

		return ret;

	}

//   vmw_fence_fifo_up(dev_priv->fman);

//   ret = vmw_dummy_query_bo_create(dev_priv);

//   if (unlikely(ret != 0))

//       goto out_no_query_bo;

//   vmw_dummy_query_bo_prepare(dev_priv);

	return 0;

out_no_query_bo:

	vmw_fence_fifo_down(dev_priv->fman);

	vmw_fifo_release(dev_priv, &dev_priv->fifo);

	return ret;

}

static void vmw_release_device(struct vmw_private *dev_priv)

{

	/*

	 * Previous destructions should've released

	 * the pinned bo.

	 */

	BUG_ON(dev_priv->pinned_bo != NULL);

	ttm_bo_unref(&dev_priv->dummy_query_bo);

	vmw_fence_fifo_down(dev_priv->fman);

	vmw_fifo_release(dev_priv, &dev_priv->fifo);

}

/**

 * Increase the 3d resource refcount.

 * If the count was prevously zero, initialize the fifo, switching to svga

 * mode. Note that the master holds a ref as well, and may request an

 * explicit switch to svga mode if fb is not running, using @unhide_svga.

 */

int vmw_3d_resource_inc(struct vmw_private *dev_priv,

			bool unhide_svga)

{

	int ret = 0;

	mutex_lock(&dev_priv->release_mutex);

	if (unlikely(dev_priv->num_3d_resources++ == 0)) {

        ret = vmw_request_device(dev_priv);

		if (unlikely(ret != 0))

			--dev_priv->num_3d_resources;

	} else if (unhide_svga) {

		mutex_lock(&dev_priv->hw_mutex);

		vmw_write(dev_priv, SVGA_REG_ENABLE,

			  vmw_read(dev_priv, SVGA_REG_ENABLE) &

			  ~SVGA_REG_ENABLE_HIDE);

		mutex_unlock(&dev_priv->hw_mutex);

	}

	mutex_unlock(&dev_priv->release_mutex);

	return ret;

}

/**

 * Decrease the 3d resource refcount.

 * If the count reaches zero, disable the fifo, switching to vga mode.

 * Note that the master holds a refcount as well, and may request an

 * explicit switch to vga mode when it releases its refcount to account

 * for the situation of an X server vt switch to VGA with 3d resources

 * active.

 */

void vmw_3d_resource_dec(struct vmw_private *dev_priv,

			 bool hide_svga)

{

	int32_t n3d;

	mutex_lock(&dev_priv->release_mutex);

	if (unlikely(--dev_priv->num_3d_resources == 0))

		vmw_release_device(dev_priv);

	else if (hide_svga) {

		mutex_lock(&dev_priv->hw_mutex);

		vmw_write(dev_priv, SVGA_REG_ENABLE,

			  vmw_read(dev_priv, SVGA_REG_ENABLE) |

			  SVGA_REG_ENABLE_HIDE);

		mutex_unlock(&dev_priv->hw_mutex);

	}

	n3d = (int32_t) dev_priv->num_3d_resources;

	mutex_unlock(&dev_priv->release_mutex);

	BUG_ON(n3d < 0);

}

/**

 * Sets the initial_[width|height] fields on the given vmw_private.

 *

 * It does so by reading SVGA_REG_[WIDTH|HEIGHT] regs and then

 * clamping the value to fb_max_[width|height] fields and the

 * VMW_MIN_INITIAL_[WIDTH|HEIGHT].

 * If the values appear to be invalid, set them to

 * VMW_MIN_INITIAL_[WIDTH|HEIGHT].

 */

static void vmw_get_initial_size(struct vmw_private *dev_priv)

{

	uint32_t width;

	uint32_t height;

	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);

	if (width > dev_priv->fb_max_width ||

	    height > dev_priv->fb_max_height) {

		/*

		 * This is a host error and shouldn't occur.

		 */

		width = VMW_MIN_INITIAL_WIDTH;

		height = VMW_MIN_INITIAL_HEIGHT;

	}

	dev_priv->initial_width = width;

	dev_priv->initial_height = height;

}

/**

 * vmw_dma_select_mode - Determine how DMA mappings should be set up for this

 * system.

 *

 * @dev_priv: Pointer to a struct vmw_private

 *

 * This functions tries to determine the IOMMU setup and what actions

 * need to be taken by the driver to make system pages visible to the

 * device.

 * If this function decides that DMA is not possible, it returns -EINVAL.

 * The driver may then try to disable features of the device that require

 * DMA.

 */

static int vmw_dma_select_mode(struct vmw_private *dev_priv)

{

	static const char *names[vmw_dma_map_max] = {

		[vmw_dma_phys] = "Using physical TTM page addresses.",

		[vmw_dma_alloc_coherent] = "Using coherent TTM pages.",

		[vmw_dma_map_populate] = "Keeping DMA mappings.",

		[vmw_dma_map_bind] = "Giving up DMA mappings early."};

    dev_priv->map_mode = vmw_dma_phys;

    DRM_INFO("DMA map mode: %s\n", names[dev_priv->map_mode]);

	return 0;

}

/**

 * vmw_dma_masks - set required page- and dma masks

 *

 * @dev: Pointer to struct drm-device

 *

 * With 32-bit we can only handle 32 bit PFNs. Optionally set that

 * restriction also for 64-bit systems.

 */

#ifdef CONFIG_INTEL_IOMMU

static int vmw_dma_masks(struct vmw_private *dev_priv)

{

	struct drm_device *dev = dev_priv->dev;

	if (intel_iommu_enabled &&

	    (sizeof(unsigned long) == 4 || vmw_restrict_dma_mask)) {

		DRM_INFO("Restricting DMA addresses to 44 bits.\n");

		return dma_set_mask(dev->dev, DMA_BIT_MASK(44));

	}

	return 0;

}

#else

static int vmw_dma_masks(struct vmw_private *dev_priv)

{

	return 0;

}

#endif

static int vmw_driver_load(struct drm_device *dev, unsigned long chipset)

{

	struct vmw_private *dev_priv;

	int ret;

	uint32_t svga_id;

	enum vmw_res_type i;

	bool refuse_dma = false;

	dev_priv = kzalloc(sizeof(*dev_priv), GFP_KERNEL);

	if (unlikely(dev_priv == NULL)) {

		DRM_ERROR("Failed allocating a device private struct.\n");

		return -ENOMEM;

	}

	pci_set_master(dev->pdev);

	dev_priv->dev = dev;

	dev_priv->vmw_chipset = chipset;

	dev_priv->last_read_seqno = (uint32_t) -100;

	mutex_init(&dev_priv->hw_mutex);

	mutex_init(&dev_priv->cmdbuf_mutex);

	mutex_init(&dev_priv->release_mutex);

	mutex_init(&dev_priv->binding_mutex);

	rwlock_init(&dev_priv->resource_lock);

	ttm_lock_init(&dev_priv->reservation_sem);

	for (i = vmw_res_context; i < vmw_res_max; ++i) {

		idr_init(&dev_priv->res_idr[i]);

		INIT_LIST_HEAD(&dev_priv->res_lru[i]);

	}

	mutex_init(&dev_priv->init_mutex);

	init_waitqueue_head(&dev_priv->fence_queue);

	init_waitqueue_head(&dev_priv->fifo_queue);

	dev_priv->fence_queue_waiters = 0;

	atomic_set(&dev_priv->fifo_queue_waiters, 0);

	dev_priv->used_memory_size = 0;

	dev_priv->io_start = pci_resource_start(dev->pdev, 0);

	dev_priv->vram_start = pci_resource_start(dev->pdev, 1);

	dev_priv->mmio_start = pci_resource_start(dev->pdev, 2);

	dev_priv->enable_fb = enable_fbdev;

	mutex_lock(&dev_priv->hw_mutex);

    vmw_write(dev_priv, SVGA_REG_ID, SVGA_ID_2);

	svga_id = vmw_read(dev_priv, SVGA_REG_ID);

	if (svga_id != SVGA_ID_2) {

		ret = -ENOSYS;

		DRM_ERROR("Unsupported SVGA ID 0x%x\n", svga_id);

		mutex_unlock(&dev_priv->hw_mutex);

		goto out_err0;

	}

	dev_priv->capabilities = vmw_read(dev_priv, SVGA_REG_CAPABILITIES);

	ret = vmw_dma_select_mode(dev_priv);

	if (unlikely(ret != 0)) {

		DRM_INFO("Restricting capabilities due to IOMMU setup.\n");

		refuse_dma = true;

	}

	dev_priv->vram_size = vmw_read(dev_priv, SVGA_REG_VRAM_SIZE);

	dev_priv->mmio_size = vmw_read(dev_priv, SVGA_REG_MEM_SIZE);

	dev_priv->fb_max_width = vmw_read(dev_priv, SVGA_REG_MAX_WIDTH);

	dev_priv->fb_max_height = vmw_read(dev_priv, SVGA_REG_MAX_HEIGHT);

	vmw_get_initial_size(dev_priv);

	if (dev_priv->capabilities & SVGA_CAP_GMR2) {

		dev_priv->max_gmr_ids =

			vmw_read(dev_priv, SVGA_REG_GMR_MAX_IDS);

		dev_priv->max_gmr_pages =

			vmw_read(dev_priv, SVGA_REG_GMRS_MAX_PAGES);

		dev_priv->memory_size =

			vmw_read(dev_priv, SVGA_REG_MEMORY_SIZE);

		dev_priv->memory_size -= dev_priv->vram_size;

	} else {

		/*

		 * An arbitrary limit of 512MiB on surface

		 * memory. But all HWV8 hardware supports GMR2.

		 */

		dev_priv->memory_size = 512*1024*1024;

	}

	dev_priv->max_mob_pages = 0;

	dev_priv->max_mob_size = 0;

	if (dev_priv->capabilities & SVGA_CAP_GBOBJECTS) {

		uint64_t mem_size =

			vmw_read(dev_priv,

				 SVGA_REG_SUGGESTED_GBOBJECT_MEM_SIZE_KB);

		dev_priv->max_mob_pages = mem_size * 1024 / PAGE_SIZE;

		dev_priv->prim_bb_mem =

			vmw_read(dev_priv,

				 SVGA_REG_MAX_PRIMARY_BOUNDING_BOX_MEM);

		dev_priv->max_mob_size =

			vmw_read(dev_priv, SVGA_REG_MOB_MAX_SIZE);

	} else

		dev_priv->prim_bb_mem = dev_priv->vram_size;

	ret = vmw_dma_masks(dev_priv);

	if (unlikely(ret != 0)) {

		mutex_unlock(&dev_priv->hw_mutex);

		goto out_err0;

	}

	if (unlikely(dev_priv->prim_bb_mem < dev_priv->vram_size))

		dev_priv->prim_bb_mem = dev_priv->vram_size;

	mutex_unlock(&dev_priv->hw_mutex);

	vmw_print_capabilities(dev_priv->capabilities);

	if (dev_priv->capabilities & SVGA_CAP_GMR2) {

		DRM_INFO("Max GMR ids is %u\n",

			 (unsigned)dev_priv->max_gmr_ids);

		DRM_INFO("Max number of GMR pages is %u\n",

			 (unsigned)dev_priv->max_gmr_pages);

		DRM_INFO("Max dedicated hypervisor surface memory is %u kiB\n",

			 (unsigned)dev_priv->memory_size / 1024);

	}

	DRM_INFO("Maximum display memory size is %u kiB\n",

		 dev_priv->prim_bb_mem / 1024);

	DRM_INFO("VRAM at 0x%08x size is %u kiB\n",

		 dev_priv->vram_start, dev_priv->vram_size / 1024);

	DRM_INFO("MMIO at 0x%08x size is %u kiB\n",

		 dev_priv->mmio_start, dev_priv->mmio_size / 1024);

	ret = vmw_ttm_global_init(dev_priv);

	if (unlikely(ret != 0))

		goto out_err0;

	vmw_master_init(&dev_priv->fbdev_master);

	dev_priv->active_master = &dev_priv->fbdev_master;

	ret = ttm_bo_device_init(&dev_priv->bdev,

				 dev_priv->bo_global_ref.ref.object,

				 &vmw_bo_driver,

				 NULL,

				 VMWGFX_FILE_PAGE_OFFSET,

				 false);

	if (unlikely(ret != 0)) {

		DRM_ERROR("Failed initializing TTM buffer object driver.\n");

		goto out_err1;

	}

	ret = ttm_bo_init_mm(&dev_priv->bdev, TTM_PL_VRAM,

			     (dev_priv->vram_size >> PAGE_SHIFT));

	if (unlikely(ret != 0)) {

		DRM_ERROR("Failed initializing memory manager for VRAM.\n");

		goto out_err2;

	}

	dev_priv->has_gmr = true;

	if (((dev_priv->capabilities & (SVGA_CAP_GMR | SVGA_CAP_GMR2)) == 0) ||

	    refuse_dma || ttm_bo_init_mm(&dev_priv->bdev, VMW_PL_GMR,

					 VMW_PL_GMR) != 0) {

		DRM_INFO("No GMR memory available. "

			 "Graphics memory resources are very limited.\n");

		dev_priv->has_gmr = false;

	}

	if (dev_priv->capabilities & SVGA_CAP_GBOBJECTS) {

		dev_priv->has_mob = true;

		if (ttm_bo_init_mm(&dev_priv->bdev, VMW_PL_MOB,

				   VMW_PL_MOB) != 0) {

			DRM_INFO("No MOB memory available. "

				 "3D will be disabled.\n");

			dev_priv->has_mob = false;

		}

	}

	dev_priv->mmio_virt = ioremap_wc(dev_priv->mmio_start,

					 dev_priv->mmio_size);

	if (unlikely(dev_priv->mmio_virt == NULL)) {

		ret = -ENOMEM;

		DRM_ERROR("Failed mapping MMIO.\n");

		goto out_err3;

	}

	/* Need mmio memory to check for fifo pitchlock cap. */

	if (!(dev_priv->capabilities & SVGA_CAP_DISPLAY_TOPOLOGY) &&

	    !(dev_priv->capabilities & SVGA_CAP_PITCHLOCK) &&

	    !vmw_fifo_have_pitchlock(dev_priv)) {

		ret = -ENOSYS;

		DRM_ERROR("Hardware has no pitchlock\n");

		goto out_err4;

	}

	dev_priv->tdev = ttm_object_device_init

		(dev_priv->mem_global_ref.object, 12, &vmw_prime_dmabuf_ops);

	if (unlikely(dev_priv->tdev == NULL)) {

		DRM_ERROR("Unable to initialize TTM object management.\n");

		ret = -ENOMEM;

		goto out_err4;

	}

	dev->dev_private = dev_priv;

#if 0

	if (dev_priv->capabilities & SVGA_CAP_IRQMASK) {

		ret = drm_irq_install(dev, dev->pdev->irq);

		if (ret != 0) {

			DRM_ERROR("Failed installing irq: %d\n", ret);

			goto out_no_irq;

		}

	}

	dev_priv->fman = vmw_fence_manager_init(dev_priv);

	if (unlikely(dev_priv->fman == NULL)) {

		ret = -ENOMEM;

		goto out_no_fman;

	}

	vmw_kms_save_vga(dev_priv);

#endif

	/* Start kms and overlay systems, needs fifo. */

	ret = vmw_kms_init(dev_priv);

	if (unlikely(ret != 0))

		goto out_no_kms;

    if (dev_priv->enable_fb) {

       ret = vmw_3d_resource_inc(dev_priv, true);

       if (unlikely(ret != 0))

           goto out_no_fifo;

//       vmw_fb_init(dev_priv);

    }

    main_device = dev;

	return 0;

out_no_fifo:

//   vmw_overlay_close(dev_priv);

//   vmw_kms_close(dev_priv);

out_no_kms:

//   vmw_kms_restore_vga(dev_priv);

//   vmw_fence_manager_takedown(dev_priv->fman);

out_no_fman:

//   if (dev_priv->capabilities & SVGA_CAP_IRQMASK)

//       drm_irq_uninstall(dev_priv->dev);

out_no_irq:

//   if (dev_priv->stealth)

//       pci_release_region(dev->pdev, 2);

//   else

//       pci_release_regions(dev->pdev);

out_no_device:

//   ttm_object_device_release(&dev_priv->tdev);

out_err4:

//   iounmap(dev_priv->mmio_virt);

out_err3:

//   arch_phys_wc_del(dev_priv->mmio_mtrr);

//   if (dev_priv->has_gmr)

//       (void) ttm_bo_clean_mm(&dev_priv->bdev, VMW_PL_GMR);

//   (void)ttm_bo_clean_mm(&dev_priv->bdev, TTM_PL_VRAM);

out_err2:

//   (void)ttm_bo_device_release(&dev_priv->bdev);

out_err1:

//   vmw_ttm_global_release(dev_priv);

out_err0:

//   for (i = vmw_res_context; i < vmw_res_max; ++i)

//       idr_destroy(&dev_priv->res_idr[i]);

	kfree(dev_priv);

	return ret;

}

#if 0

static int vmw_driver_unload(struct drm_device *dev)

{

	struct vmw_private *dev_priv = vmw_priv(dev);

	enum vmw_res_type i;

	unregister_pm_notifier(&dev_priv->pm_nb);

	if (dev_priv->ctx.res_ht_initialized)

		drm_ht_remove(&dev_priv->ctx.res_ht);

	if (dev_priv->ctx.cmd_bounce)

		vfree(dev_priv->ctx.cmd_bounce);

	if (dev_priv->enable_fb) {

		vmw_fb_close(dev_priv);

		vmw_kms_restore_vga(dev_priv);

		vmw_3d_resource_dec(dev_priv, false);

	}

	vmw_kms_close(dev_priv);

	vmw_overlay_close(dev_priv);

	vmw_fence_manager_takedown(dev_priv->fman);

	if (dev_priv->capabilities & SVGA_CAP_IRQMASK)

		drm_irq_uninstall(dev_priv->dev);

	if (dev_priv->stealth)

		pci_release_region(dev->pdev, 2);

	else

		pci_release_regions(dev->pdev);

	ttm_object_device_release(&dev_priv->tdev);

	iounmap(dev_priv->mmio_virt);

	arch_phys_wc_del(dev_priv->mmio_mtrr);

	if (dev_priv->has_mob)

		(void) ttm_bo_clean_mm(&dev_priv->bdev, VMW_PL_MOB);

	if (dev_priv->has_gmr)

		(void)ttm_bo_clean_mm(&dev_priv->bdev, VMW_PL_GMR);

	(void)ttm_bo_clean_mm(&dev_priv->bdev, TTM_PL_VRAM);

	(void)ttm_bo_device_release(&dev_priv->bdev);

	vmw_ttm_global_release(dev_priv);

	for (i = vmw_res_context; i < vmw_res_max; ++i)

		idr_destroy(&dev_priv->res_idr[i]);

	kfree(dev_priv);

	return 0;

}

static void vmw_preclose(struct drm_device *dev,

			 struct drm_file *file_priv)

{

	struct vmw_fpriv *vmw_fp = vmw_fpriv(file_priv);

	struct vmw_private *dev_priv = vmw_priv(dev);

	vmw_event_fence_fpriv_gone(dev_priv->fman, &vmw_fp->fence_events);

}

static void vmw_postclose(struct drm_device *dev,

			 struct drm_file *file_priv)

{

	struct vmw_fpriv *vmw_fp;

	vmw_fp = vmw_fpriv(file_priv);

	if (vmw_fp->locked_master) {

		struct vmw_master *vmaster =

			vmw_master(vmw_fp->locked_master);

		ttm_vt_unlock(&vmaster->lock);

		drm_master_put(&vmw_fp->locked_master);

	}

	ttm_object_file_release(&vmw_fp->tfile);

	kfree(vmw_fp);

}

#endif

static int vmw_driver_open(struct drm_device *dev, struct drm_file *file_priv)

{

	struct vmw_private *dev_priv = vmw_priv(dev);

	struct vmw_fpriv *vmw_fp;

	int ret = -ENOMEM;

	vmw_fp = kzalloc(sizeof(*vmw_fp), GFP_KERNEL);

	if (unlikely(vmw_fp == NULL))

		return ret;

	INIT_LIST_HEAD(&vmw_fp->fence_events);

//   vmw_fp->tfile = ttm_object_file_init(dev_priv->tdev, 10);

//   if (unlikely(vmw_fp->tfile == NULL))

//       goto out_no_tfile;

	file_priv->driver_priv = vmw_fp;

	return 0;

out_no_tfile:

	kfree(vmw_fp);

	return ret;

}

#if 0

static long vmw_unlocked_ioctl(struct file *filp, unsigned int cmd,

			       unsigned long arg)

{

	struct drm_file *file_priv = filp->private_data;

	struct drm_device *dev = file_priv->minor->dev;

	unsigned int nr = DRM_IOCTL_NR(cmd);

	/*

	 * Do extra checking on driver private ioctls.

	 */

	if ((nr >= DRM_COMMAND_BASE) && (nr < DRM_COMMAND_END)

	    && (nr < DRM_COMMAND_BASE + dev->driver->num_ioctls)) {

		const struct drm_ioctl_desc *ioctl =

		    &vmw_ioctls[nr - DRM_COMMAND_BASE];

		if (unlikely(ioctl->cmd_drv != cmd)) {

			DRM_ERROR("Invalid command format, ioctl %d\n",

				  nr - DRM_COMMAND_BASE);

			return -EINVAL;

		}

	}

	return drm_ioctl(filp, cmd, arg);

}

static void vmw_lastclose(struct drm_device *dev)

{

	struct drm_crtc *crtc;

	struct drm_mode_set set;

	int ret;

	set.x = 0;

	set.y = 0;

	set.fb = NULL;

	set.mode = NULL;

	set.connectors = NULL;

	set.num_connectors = 0;

	list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {

		set.crtc = crtc;

		ret = drm_mode_set_config_internal(&set);

		WARN_ON(ret != 0);

	}

}

#endif

static void vmw_master_init(struct vmw_master *vmaster)

{

	ttm_lock_init(&vmaster->lock);

	INIT_LIST_HEAD(&vmaster->fb_surf);

	mutex_init(&vmaster->fb_surf_mutex);

}

static int vmw_master_create(struct drm_device *dev,

			     struct drm_master *master)

{

	struct vmw_master *vmaster;

	vmaster = kzalloc(sizeof(*vmaster), GFP_KERNEL);

	if (unlikely(vmaster == NULL))

		return -ENOMEM;

	vmw_master_init(vmaster);

//	ttm_lock_set_kill(&vmaster->lock, true, SIGTERM);

	master->driver_priv = vmaster;

	return 0;

}

static void vmw_master_destroy(struct drm_device *dev,

			       struct drm_master *master)

{

	struct vmw_master *vmaster = vmw_master(master);

	master->driver_priv = NULL;

	kfree(vmaster);

}

#if 0

static int vmw_master_set(struct drm_device *dev,

			  struct drm_file *file_priv,

			  bool from_open)

{

	struct vmw_private *dev_priv = vmw_priv(dev);

	struct vmw_fpriv *vmw_fp = vmw_fpriv(file_priv);

	struct vmw_master *active = dev_priv->active_master;

	struct vmw_master *vmaster = vmw_master(file_priv->master);

	int ret = 0;

	if (!dev_priv->enable_fb) {

		ret = vmw_3d_resource_inc(dev_priv, true);

		if (unlikely(ret != 0))

			return ret;

		vmw_kms_save_vga(dev_priv);

		mutex_lock(&dev_priv->hw_mutex);

		vmw_write(dev_priv, SVGA_REG_TRACES, 0);

		mutex_unlock(&dev_priv->hw_mutex);

	}

	if (active) {

		BUG_ON(active != &dev_priv->fbdev_master);

		ret = ttm_vt_lock(&active->lock, false, vmw_fp->tfile);

		if (unlikely(ret != 0))

			goto out_no_active_lock;

		ttm_lock_set_kill(&active->lock, true, SIGTERM);

		ret = ttm_bo_evict_mm(&dev_priv->bdev, TTM_PL_VRAM);

		if (unlikely(ret != 0)) {

			DRM_ERROR("Unable to clean VRAM on "

				  "master drop.\n");

		}

		dev_priv->active_master = NULL;

	}

	ttm_lock_set_kill(&vmaster->lock, false, SIGTERM);

	if (!from_open) {

		ttm_vt_unlock(&vmaster->lock);

		BUG_ON(vmw_fp->locked_master != file_priv->master);

		drm_master_put(&vmw_fp->locked_master);

	}

	dev_priv->active_master = vmaster;

	return 0;

out_no_active_lock:

	if (!dev_priv->enable_fb) {

		vmw_kms_restore_vga(dev_priv);

		vmw_3d_resource_dec(dev_priv, true);

		mutex_lock(&dev_priv->hw_mutex);

		vmw_write(dev_priv, SVGA_REG_TRACES, 1);

		mutex_unlock(&dev_priv->hw_mutex);

	}

	return ret;

}

static void vmw_master_drop(struct drm_device *dev,

			    struct drm_file *file_priv,

			    bool from_release)

{

	struct vmw_private *dev_priv = vmw_priv(dev);

	struct vmw_fpriv *vmw_fp = vmw_fpriv(file_priv);

	struct vmw_master *vmaster = vmw_master(file_priv->master);

	int ret;

	/**

	 * Make sure the master doesn't disappear while we have

	 * it locked.

	 */

	vmw_fp->locked_master = drm_master_get(file_priv->master);

	ret = ttm_vt_lock(&vmaster->lock, false, vmw_fp->tfile);

	if (unlikely((ret != 0))) {

		DRM_ERROR("Unable to lock TTM at VT switch.\n");

		drm_master_put(&vmw_fp->locked_master);

	}

	vmw_execbuf_release_pinned_bo(dev_priv);

	if (!dev_priv->enable_fb) {

		ret = ttm_bo_evict_mm(&dev_priv->bdev, TTM_PL_VRAM);

		if (unlikely(ret != 0))

			DRM_ERROR("Unable to clean VRAM on master drop.\n");

		vmw_kms_restore_vga(dev_priv);

		vmw_3d_resource_dec(dev_priv, true);

		mutex_lock(&dev_priv->hw_mutex);

		vmw_write(dev_priv, SVGA_REG_TRACES, 1);

		mutex_unlock(&dev_priv->hw_mutex);

	}

	dev_priv->active_master = &dev_priv->fbdev_master;

	ttm_lock_set_kill(&dev_priv->fbdev_master.lock, false, SIGTERM);

	ttm_vt_unlock(&dev_priv->fbdev_master.lock);

	if (dev_priv->enable_fb)

		vmw_fb_on(dev_priv);

}

static void vmw_remove(struct pci_dev *pdev)

{

	struct drm_device *dev = pci_get_drvdata(pdev);

	drm_put_dev(dev);

}

static int vmwgfx_pm_notifier(struct notifier_block *nb, unsigned long val,

			      void *ptr)

{

	struct vmw_private *dev_priv =

		container_of(nb, struct vmw_private, pm_nb);

	switch (val) {

	case PM_HIBERNATION_PREPARE:

	case PM_SUSPEND_PREPARE:

		ttm_suspend_lock(&dev_priv->reservation_sem);

		/**

		 * This empties VRAM and unbinds all GMR bindings.

		 * Buffer contents is moved to swappable memory.

		 */

		vmw_execbuf_release_pinned_bo(dev_priv);

		vmw_resource_evict_all(dev_priv);

		ttm_bo_swapout_all(&dev_priv->bdev);