kolibrios/drivers/video/drm/i915/bitmap.c

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#include <drm/drmP.h>
#include <drm/i915_drm.h>
#include "i915_drv.h"
#include "intel_drv.h"
#include "hmm.h"
#include "bitmap.h"
#define DRIVER_CAPS_0 HW_BIT_BLIT;
#define DRIVER_CAPS_1 0
struct context *context_map[256];
struct hmm bm_mm;
extern struct drm_device *main_device;
void __attribute__((regparm(1))) destroy_bitmap(bitmap_t *bitmap)
{
dma_addr_t *pages = bitmap->obj->allocated_pages;;
int i;
printf("destroy bitmap %d\n", bitmap->handle);
free_handle(&bm_mm, bitmap->handle);
bitmap->handle = 0;
bitmap->obj->base.read_domains = I915_GEM_DOMAIN_GTT;
bitmap->obj->base.write_domain = I915_GEM_DOMAIN_CPU;
mutex_lock(&main_device->struct_mutex);
drm_gem_object_unreference(&bitmap->obj->base);
mutex_unlock(&main_device->struct_mutex);
if(pages != NULL)
{
for (i = 0; i < bitmap->page_count; i++)
FreePage(pages[i]);
free(pages);
};
UserFree(bitmap->uaddr);
__DestroyObject(bitmap);
};
static int bitmap_get_pages_gtt(struct drm_i915_gem_object *obj)
{
int page_count;
/* Get the list of pages out of our struct file. They'll be pinned
* at this point until we release them.
*/
page_count = obj->base.size / PAGE_SIZE;
BUG_ON(obj->allocated_pages == NULL);
BUG_ON(obj->pages.page != NULL);
obj->pages.page = obj->allocated_pages;
obj->pages.nents = page_count;
// if (obj->tiling_mode != I915_TILING_NONE)
// i915_gem_object_do_bit_17_swizzle(obj);
return 0;
}
static void bitmap_put_pages_gtt(struct drm_i915_gem_object *obj)
{
int ret, i;
BUG_ON(obj->madv == __I915_MADV_PURGED);
ret = i915_gem_object_set_to_cpu_domain(obj, true);
if (ret) {
/* In the event of a disaster, abandon all caches and
* hope for the best.
*/
WARN_ON(ret != -EIO);
i915_gem_clflush_object(obj);
obj->base.read_domains = obj->base.write_domain = I915_GEM_DOMAIN_CPU;
}
if (obj->madv == I915_MADV_DONTNEED)
obj->dirty = 0;
obj->dirty = 0;
}
static const struct drm_i915_gem_object_ops bitmap_object_ops = {
.get_pages = bitmap_get_pages_gtt,
.put_pages = bitmap_put_pages_gtt,
};
#if 0
struct io_call_10 /* SRV_CREATE_SURFACE */
{
u32 handle; // ignored
void *data; // ignored
u32 width;
u32 height;
u32 pitch; // ignored
u32 max_width;
u32 max_height;
u32 format; // reserved mbz
};
#endif
int create_surface(struct drm_device *dev, struct io_call_10 *pbitmap)
{
struct drm_i915_gem_object *obj;
bitmap_t *bitmap;
u32 handle;
u32 width, max_width;
u32 height, max_height;
u32 size, max_size;
u32 pitch, max_pitch;
void *uaddr;
dma_addr_t *pages;
u32 page_count;
int i;
int ret;
pbitmap->handle = 0;
pbitmap->data = (void*)-1;
width = pbitmap->width;
height = pbitmap->height;
if((width == 0)||(height == 0)||(width > 4096)||(height > 4096))
goto err1;
/*
if( ((pbitmap->max_width !=0 ) &&
(pbitmap->max_width < width)) ||
(pbitmap->max_width > 4096) )
goto err1;
if( ((pbitmap->max_height !=0 ) &&
(pbitmap->max_height < width)) ||
(pbitmap->max_height > 4096) )
goto err1;
if( pbitmap->format != 0)
goto err1;
*/
max_width = (pbitmap->max_width ==0) ? width : pbitmap->max_width;
max_height = (pbitmap->max_height==0) ? height : pbitmap->max_height;
handle = alloc_handle(&bm_mm);
// printf("%s %d\n",__FUNCTION__, handle);
if(handle == 0)
goto err1;
bitmap = CreateObject(GetPid(), sizeof(*bitmap));
// printf("bitmap %x\n", bitmap);
if( bitmap == NULL)
goto err2;
bitmap->handle = handle;
bitmap->header.destroy = destroy_bitmap;
bitmap->obj = NULL;
hmm_set_data(&bm_mm, handle, bitmap);
pitch = ALIGN(width*4,64);
size = roundup(pitch*height, PAGE_SIZE);
// printf("pitch %d size %d\n", pitch, size);
max_pitch = ALIGN(max_width*4,64);
max_size = roundup(max_pitch*max_height, PAGE_SIZE);
// printf("max_pitch %d max_size %d\n", max_pitch, max_size);
uaddr = UserAlloc(max_size);
if( uaddr == NULL)
goto err3;
else
{
u32 max_count;
dma_addr_t page;
char *vaddr = uaddr;
page_count = size/PAGE_SIZE;
max_count = max_size/PAGE_SIZE;
pages = kzalloc(max_count*sizeof(dma_addr_t), 0);
if( pages == NULL)
goto err4;
for(i = 0; i < page_count; i++, vaddr+= PAGE_SIZE)
{
page = AllocPage();
if ( page == 0 )
goto err4;
pages[i] = page;
MapPage(vaddr, page, 0x207); //map as shared page
};
bitmap->page_count = page_count;
bitmap->max_count = max_count;
};
obj = i915_gem_alloc_object(dev, size);
if (obj == NULL)
goto err4;
obj->ops = &bitmap_object_ops;
obj->allocated_pages = pages;
ret = i915_gem_object_pin(obj, PAGE_SIZE, true,true);
if (ret)
goto err5;
obj->mapped = uaddr ;
bitmap->handle = handle;
bitmap->uaddr = uaddr;
bitmap->pitch = pitch;
bitmap->gaddr = obj->gtt_offset;
bitmap->width = width;
bitmap->height = height;
bitmap->max_width = max_width;
bitmap->max_height = max_height;
bitmap->obj = obj;
bitmap->header.destroy = destroy_bitmap;
pbitmap->handle = handle;
pbitmap->data = uaddr;
pbitmap->pitch = pitch;
printf("%s handle: %d pitch: %d gpu_addr: %x user_addr: %x\n",
__FUNCTION__, handle, pitch, obj->gtt_offset, uaddr);
return 0;
err5:
mutex_lock(&dev->struct_mutex);
drm_gem_object_unreference(&obj->base);
mutex_unlock(&dev->struct_mutex);
err4:
while (i--)
FreePage(pages[i]);
free(pages);
UserFree(uaddr);
err3:
__DestroyObject(bitmap);
err2:
free_handle(&bm_mm, handle);
err1:
return -1;
};
int lock_surface(struct io_call_12 *pbitmap)
{
int ret;
bitmap_t *bitmap;
if(unlikely(pbitmap->handle == 0))
return -1;
bitmap = (bitmap_t*)hmm_get_data(&bm_mm, pbitmap->handle);
if(unlikely(bitmap==NULL))
return -1;
ret = i915_gem_object_set_to_cpu_domain(bitmap->obj, true);
if(ret != 0 )
{
pbitmap->data = NULL;
pbitmap->pitch = 0;
dbgprintf("%s fail\n", __FUNCTION__);
return ret;
};
pbitmap->data = bitmap->uaddr;
pbitmap->pitch = bitmap->pitch;
return 0;
};
int init_bitmaps()
{
int ret;
ret = init_hmm(&bm_mm, 1024);
return ret;
};
int get_driver_caps(hwcaps_t *caps)
{
int ret = 0;
switch(caps->idx)
{
case 0:
caps->opt[0] = DRIVER_CAPS_0;
caps->opt[1] = DRIVER_CAPS_1;
break;
case 1:
caps->cap1.max_tex_width = 4096;
caps->cap1.max_tex_height = 4096;
break;
default:
ret = 1;
};
caps->idx = 1;
return ret;
}
void __attribute__((regparm(1))) destroy_context(struct context *context)
{
printf("destroy context %x\n", context);
context_map[context->slot] = NULL;
mutex_lock(&main_device->struct_mutex);
drm_gem_object_unreference(&context->obj->base);
mutex_unlock(&main_device->struct_mutex);
__DestroyObject(context);
};
#define CURRENT_TASK (0x80003000)
struct context *get_context(struct drm_device *dev)
{
struct context *context;
struct io_call_10 io_10;
int slot = *((u8*)CURRENT_TASK);
int ret;
context = context_map[slot];
if( context != NULL)
return context;
context = CreateObject(GetPid(), sizeof(*context));
printf("context %x\n", context);
if( context != NULL)
{
drm_i915_private_t *dev_priv = dev->dev_private;
struct drm_i915_gem_object *obj;
obj = i915_gem_alloc_object(dev, 4096);
i915_gem_object_pin(obj, 4096, true, true);
context->obj = obj;
context->cmd_buffer = MapIoMem((addr_t)obj->pages.page[0], 4096, PG_SW|PG_NOCACHE);
context->cmd_offset = obj->gtt_offset;
context->header.destroy = destroy_context;
context->mask = NULL;
context->seqno = 0;
context->slot = slot;
context_map[slot] = context;
};
return context;
};