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#include 

#include "i915_drv.h"

#include "intel_drv.h"

#include 

#include 

static struct mutex cursor_lock;

static void __stdcall move_cursor_kms(cursor_t *cursor, int x, int y)

{

    struct drm_crtc *crtc = os_display->crtc;

    struct drm_plane_state *cursor_state = crtc->cursor->state;

    x-= cursor->hot_x;

    y-= cursor->hot_y;

    crtc->cursor_x = x;

    crtc->cursor_y = y;

    cursor_state->crtc_x = x;

    cursor_state->crtc_y = y;

    intel_crtc_update_cursor(crtc, 1);

};

static cursor_t* __stdcall select_cursor_kms(cursor_t *cursor)

{

    struct drm_i915_private *dev_priv = os_display->ddev->dev_private;

    struct drm_crtc   *crtc = os_display->crtc;

    struct intel_crtc *intel_crtc = to_intel_crtc(crtc);

    cursor_t *old;

    old = os_display->cursor;

    mutex_lock(&cursor_lock);

    os_display->cursor = cursor;

    if (!dev_priv->info.cursor_needs_physical)

       intel_crtc->cursor_addr = i915_gem_obj_ggtt_offset(cursor->cobj);

    else

        intel_crtc->cursor_addr = (addr_t)cursor->cobj;

    intel_crtc->base.cursor->state->crtc_w = 64;

    intel_crtc->base.cursor->state->crtc_h = 64;

    intel_crtc->base.cursor->state->rotation = 0;

    mutex_unlock(&cursor_lock);

    move_cursor_kms(cursor, crtc->cursor_x, crtc->cursor_y);

    return old;

};

static void __stdcall restore_cursor(int x, int y){};

static void disable_mouse(void){};

static void __attribute__((regparm(1))) destroy_cursor(cursor_t *cursor)

{

    struct drm_i915_gem_object *obj = cursor->cobj;

    list_del(&cursor->list);

    i915_gem_object_ggtt_unpin(cursor->cobj);

    mutex_lock(&main_device->struct_mutex);

    drm_gem_object_unreference(&obj->base);

    mutex_unlock(&main_device->struct_mutex);

    __DestroyObject(cursor);

};

static int init_cursor(cursor_t *cursor)

{

    display_t *display = GetDisplay();

    struct drm_device *dev = display->ddev;

    struct drm_i915_private *dev_priv = dev->dev_private;

    struct drm_i915_gem_object *obj;

    uint32_t *bits;

    uint32_t *src;

    void     *mapped;

    int       i,j;

    int       ret;

    mutex_lock(&dev->struct_mutex);

    if (dev_priv->info.cursor_needs_physical)

    {

        bits = (uint32_t*)KernelAlloc(KMS_CURSOR_WIDTH*KMS_CURSOR_HEIGHT*8);

        if (unlikely(bits == NULL))

        {

            ret = -ENOMEM;

            goto unlock;

        };

        cursor->cobj = (struct drm_i915_gem_object *)GetPgAddr(bits);

    }

    else

    {

        obj = i915_gem_alloc_object(display->ddev, KMS_CURSOR_WIDTH*KMS_CURSOR_HEIGHT*4);

        if (unlikely(obj == NULL))

        {

            ret = -ENOMEM;

            goto unlock;

        };

        ret = i915_gem_object_ggtt_pin(obj, &i915_ggtt_view_normal, 128*1024, PIN_GLOBAL);

        if (ret)

            goto unref;

        ret = i915_gem_object_set_to_gtt_domain(obj, true);

        if (ret)

            goto unpin;

/* You don't need to worry about fragmentation issues.

 * GTT space is continuous. I guarantee it.                           */

        mapped = bits = (u32*)MapIoMem(dev_priv->gtt.mappable_base + i915_gem_obj_ggtt_offset(obj),

                    KMS_CURSOR_WIDTH*KMS_CURSOR_HEIGHT*4, PG_SW);

        if (unlikely(bits == NULL))

        {

            ret = -ENOMEM;

            goto unpin;

        };

        cursor->cobj = obj;

    };

    mutex_unlock(&dev->struct_mutex);

    src = cursor->data;

    for(i = 0; i < 32; i++)

    {

        for(j = 0; j < 32; j++)

            *bits++ = *src++;

        for(j = 32; j < KMS_CURSOR_WIDTH; j++)

            *bits++ = 0;

    }

    for(i = 0; i < KMS_CURSOR_WIDTH*(KMS_CURSOR_HEIGHT-32); i++)

        *bits++ = 0;

    FreeKernelSpace(mapped);

    KernelFree(cursor->data);

    cursor->data = bits;

    cursor->header.destroy = destroy_cursor;

    return 0;

unpin:

    i915_gem_object_ggtt_unpin(obj);

unref:

    drm_gem_object_unreference(&obj->base);

unlock:

    mutex_unlock(&dev->struct_mutex);

    return ret;

}

void init_system_cursors(struct drm_device *dev)

{

    cursor_t  *cursor;

    display_t *display;

    u32      ifl;

    display = GetDisplay();

    mutex_init(&cursor_lock);

    ifl = safe_cli();

    {

        list_for_each_entry(cursor, &display->cursors, list)

        {

            init_cursor(cursor);

        };

        display->restore_cursor(0,0);

        display->init_cursor    = init_cursor;

        display->select_cursor  = select_cursor_kms;

        display->show_cursor    = NULL;

        display->move_cursor    = move_cursor_kms;

        display->restore_cursor = restore_cursor;

        display->disable_mouse  = disable_mouse;

        display->crtc->cursor_x = display->width/2;

        display->crtc->cursor_y = display->height/2;

        select_cursor_kms(display->cursor);

    };

    safe_sti(ifl);

}