pscnv/pscnv_chan.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_CHAN_H__
  28 #define __PSCNV_CHAN_H__
  29
  30 #include "pscnv_vm.h"
  31 #include "pscnv_ramht.h"
  32 #include "pscnv_engine.h"
  33
  34 /* XXX */
  35 extern uint64_t nvc0_fifo_ctrl_offs(struct drm_device *dev, int cid);
  36
  37 struct pscnv_chan {
  38         struct drm_device *dev;
  39         int cid;
  40         /* protected by ch_lock below, used for lookup */
  41         uint32_t handle;
  42         struct pscnv_vspace *vspace;
  43         struct list_head vspace_list;
  44         struct pscnv_bo *bo;
  45         spinlock_t instlock;
  46         int instpos;
  47         struct pscnv_ramht ramht;
  48         uint32_t ramfc;
  49         struct pscnv_bo *cache;
  50         struct drm_file *filp;
  51         struct kref ref;
  52         void *engdata[PSCNV_ENGINES_NUM];
  53 };
  54
  55 struct pscnv_chan_engine {
  56         void (*takedown) (struct drm_device *dev);
  57         int (*do_chan_new) (struct pscnv_chan *ch);
  58         void (*do_chan_free) (struct pscnv_chan *ch);
  59         struct pscnv_chan *fake_chans[4];
  60         struct pscnv_chan *chans[128];
  61         spinlock_t ch_lock;
  62         int ch_min, ch_max;
  63 };
  64
  65 extern struct pscnv_chan *pscnv_chan_new(struct drm_device *dev, struct pscnv_vspace *, int fake);
  66
  67 extern void pscnv_chan_ref_free(struct kref *ref);
  68
  69 static inline void pscnv_chan_ref(struct pscnv_chan *ch) {
  70         kref_get(&ch->ref);
  71 }
  72
  73 static inline void pscnv_chan_unref(struct pscnv_chan *ch) {
  74         kref_put(&ch->ref, pscnv_chan_ref_free);
  75 }
  76
  77 extern int pscnv_chan_mmap(struct file *filp, struct vm_area_struct *vma);
  78 extern int pscnv_chan_handle_lookup(struct drm_device *dev, uint32_t handle);
  79
  80 int nv50_chan_init(struct drm_device *dev);
  81 int nvc0_chan_init(struct drm_device *dev);
  82
  83 #endif