pscnv/pscnv_mem.h

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21
  22 /*
  23  * Copyright 2010 PathScale Inc.  All rights reserved.
  24  * Use is subject to license terms.
  25  */
  26
  27 #ifndef __PSCNV_VRAM_H__
  28 #define __PSCNV_VRAM_H__
  29 #include "pscnv_drm.h"
  30 #include "pscnv_mm.h"
  31
  32 #define PSCNV_MEM_PAGE_SIZE 0x1000
  33
  34 /* A VRAM object of any kind. */
  35 struct pscnv_bo {
  36         struct drm_device *dev;
  37         /* size. Always a multiple of page size. */
  38         uint64_t size;
  39         /* misc flags, see below. */
  40         int flags;
  41         int tile_flags;
  42         /* cookie: free-form 32-bit number displayed in debug info. */
  43         uint32_t cookie;
  44         /* only used for debug */
  45         int serial;
  46         /* only for contig blocks. same info as start of first [and only]
  47          * region, but more convenient to access */
  48         uint64_t start;
  49         /* the following used for GEM objects only */
  50         uint32_t user[8];
  51         struct drm_gem_object *gem;
  52         struct pscnv_mm_node *map1;
  53         struct pscnv_mm_node *map3;
  54         /* VRAM only: the first mm node */
  55         struct pscnv_mm_node *mmnode;
  56         /* SYSRaM only: list of pages */
  57         struct page **pages;
  58         dma_addr_t *dmapages;
  59         /* CHAN only, pointer to a channel (FreeBSD doesn't allow overriding mmap) */
  60         struct pscnv_chan *chan;
  61 };
  62 #define PSCNV_GEM_NOUSER        0x10
  63
  64 struct pscnv_vram_engine {
  65         void (*takedown) (struct drm_device *);
  66         int (*alloc) (struct pscnv_bo *);
  67         int (*free) (struct pscnv_bo *);
  68         int (*sysram_tiling_ok) (struct pscnv_bo *);
  69 };
  70
  71 extern int pscnv_mem_init(struct drm_device *);
  72 extern void pscnv_mem_takedown(struct drm_device *);
  73 extern struct pscnv_bo *pscnv_mem_alloc(struct drm_device *,
  74                 uint64_t size, int flags, int tile_flags, uint32_t cookie);
  75 extern int pscnv_mem_free(struct pscnv_bo *);
  76
  77 extern int pscnv_vram_free(struct pscnv_bo *bo);
  78 extern void pscnv_vram_takedown(struct drm_device *dev);
  79
  80 extern int nv50_vram_init(struct drm_device *);
  81 extern int nvc0_vram_init(struct drm_device *);
  82
  83 extern int pscnv_sysram_alloc(struct pscnv_bo *);
  84 extern int pscnv_sysram_free(struct pscnv_bo *);
  85 extern int pscnv_sysram_vm_fault(struct vm_area_struct *vma, struct vm_fault *vmf);
  86
  87 #endif