drivers/gpu/drm/i915/i915_gem_debugfs.c

   1 /*
   2  * Copyright © 2008 Intel Corporation
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  18  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  20  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
  21  * IN THE SOFTWARE.
  22  *
  23  * Authors:
  24  *    Eric Anholt <eric@anholt.net>
  25  *    Keith Packard <keithp@keithp.com>
  26  *
  27  */
  28
  29 #include <linux/seq_file.h>
  30 #include "drmP.h"
  31 #include "drm.h"
  32 #include "i915_drm.h"
  33 #include "i915_drv.h"
  34
  35 #define DRM_I915_RING_DEBUG 1
  36
  37
  38 #if defined(CONFIG_DEBUG_FS)
  39
  40 #define ACTIVE_LIST     1
  41 #define FLUSHING_LIST   2
  42 #define INACTIVE_LIST   3
  43
  44 static int i915_gem_object_list_info(struct seq_file *m, void *data)
  45 {
  46         struct drm_info_node *node = (struct drm_info_node *) m->private;
  47         uintptr_t list = (uintptr_t) node->info_ent->data;
  48         struct list_head *head;
  49         struct drm_device *dev = node->minor->dev;
  50         drm_i915_private_t *dev_priv = dev->dev_private;
  51         struct drm_i915_gem_object *obj_priv;
  52
  53         switch (list) {
  54         case ACTIVE_LIST:
  55                 seq_printf(m, "Active:\n");
  56                 head = &dev_priv->mm.active_list;
  57                 break;
  58         case INACTIVE_LIST:
  59                 seq_printf(m, "Inctive:\n");
  60                 head = &dev_priv->mm.inactive_list;
  61                 break;
  62         case FLUSHING_LIST:
  63                 seq_printf(m, "Flushing:\n");
  64                 head = &dev_priv->mm.flushing_list;
  65                 break;
  66         default:
  67                 DRM_INFO("Ooops, unexpected list\n");
  68                 return 0;
  69         }
  70
  71         list_for_each_entry(obj_priv, head, list)
  72         {
  73                 char *pin_description;
  74                 struct drm_gem_object *obj = obj_priv->obj;
  75
  76                 if (obj_priv->user_pin_count > 0)
  77                         pin_description = "P";
  78                 else if (obj_priv->pin_count > 0)
  79                         pin_description = "p";
  80                 else
  81                         pin_description = " ";
  82
  83                 seq_printf(m, "    %p: %s %08x %08x %d",
  84                            obj,
  85                            pin_description,
  86                            obj->read_domains, obj->write_domain,
  87                            obj_priv->last_rendering_seqno);
  88
  89                 if (obj->name)
  90                         seq_printf(m, " (name: %d)", obj->name);
  91                 if (obj_priv->fence_reg != I915_FENCE_REG_NONE)
  92                         seq_printf(m, " (fence: %d\n", obj_priv->fence_reg);
  93                 seq_printf(m, "\n");
  94         }
  95         return 0;
  96 }
  97
  98 static int i915_gem_request_info(struct seq_file *m, void *data)
  99 {
 100         struct drm_info_node *node = (struct drm_info_node *) m->private;
 101         struct drm_device *dev = node->minor->dev;
 102         drm_i915_private_t *dev_priv = dev->dev_private;
 103         struct drm_i915_gem_request *gem_request;
 104
 105         seq_printf(m, "Request:\n");
 106         list_for_each_entry(gem_request, &dev_priv->mm.request_list, list) {
 107                 seq_printf(m, "    %d @ %d\n",
 108                            gem_request->seqno,
 109                            (int) (jiffies - gem_request->emitted_jiffies));
 110         }
 111         return 0;
 112 }
 113
 114 static int i915_gem_seqno_info(struct seq_file *m, void *data)
 115 {
 116         struct drm_info_node *node = (struct drm_info_node *) m->private;
 117         struct drm_device *dev = node->minor->dev;
 118         drm_i915_private_t *dev_priv = dev->dev_private;
 119
 120         if (dev_priv->hw_status_page != NULL) {
 121                 seq_printf(m, "Current sequence: %d\n",
 122                            i915_get_gem_seqno(dev));
 123         } else {
 124                 seq_printf(m, "Current sequence: hws uninitialized\n");
 125         }
 126         seq_printf(m, "Waiter sequence:  %d\n",
 127                         dev_priv->mm.waiting_gem_seqno);
 128         seq_printf(m, "IRQ sequence:     %d\n", dev_priv->mm.irq_gem_seqno);
 129         return 0;
 130 }
 131
 132
 133 static int i915_interrupt_info(struct seq_file *m, void *data)
 134 {
 135         struct drm_info_node *node = (struct drm_info_node *) m->private;
 136         struct drm_device *dev = node->minor->dev;
 137         drm_i915_private_t *dev_priv = dev->dev_private;
 138
 139         seq_printf(m, "Interrupt enable:    %08x\n",
 140                    I915_READ(IER));
 141         seq_printf(m, "Interrupt identity:  %08x\n",
 142                    I915_READ(IIR));
 143         seq_printf(m, "Interrupt mask:      %08x\n",
 144                    I915_READ(IMR));
 145         seq_printf(m, "Pipe A stat:         %08x\n",
 146                    I915_READ(PIPEASTAT));
 147         seq_printf(m, "Pipe B stat:         %08x\n",
 148                    I915_READ(PIPEBSTAT));
 149         seq_printf(m, "Interrupts received: %d\n",
 150                    atomic_read(&dev_priv->irq_received));
 151         if (dev_priv->hw_status_page != NULL) {
 152                 seq_printf(m, "Current sequence:    %d\n",
 153                            i915_get_gem_seqno(dev));
 154         } else {
 155                 seq_printf(m, "Current sequence:    hws uninitialized\n");
 156         }
 157         seq_printf(m, "Waiter sequence:     %d\n",
 158                    dev_priv->mm.waiting_gem_seqno);
 159         seq_printf(m, "IRQ sequence:        %d\n",
 160                    dev_priv->mm.irq_gem_seqno);
 161         return 0;
 162 }
 163
 164 static int i915_hws_info(struct seq_file *m, void *data)
 165 {
 166         struct drm_info_node *node = (struct drm_info_node *) m->private;
 167         struct drm_device *dev = node->minor->dev;
 168         drm_i915_private_t *dev_priv = dev->dev_private;
 169         int i;
 170         volatile u32 *hws;
 171
 172         hws = (volatile u32 *)dev_priv->hw_status_page;
 173         if (hws == NULL)
 174                 return 0;
 175
 176         for (i = 0; i < 4096 / sizeof(u32) / 4; i += 4) {
 177                 seq_printf(m, "0x%08x: 0x%08x 0x%08x 0x%08x 0x%08x\n",
 178                            i * 4,
 179                            hws[i], hws[i + 1], hws[i + 2], hws[i + 3]);
 180         }
 181         return 0;
 182 }
 183
 184 static struct drm_info_list i915_gem_debugfs_list[] = {
 185         {"i915_gem_active", i915_gem_object_list_info, 0, (void *) ACTIVE_LIST},
 186         {"i915_gem_flushing", i915_gem_object_list_info, 0, (void *) FLUSHING_LIST},
 187         {"i915_gem_inactive", i915_gem_object_list_info, 0, (void *) INACTIVE_LIST},
 188         {"i915_gem_request", i915_gem_request_info, 0},
 189         {"i915_gem_seqno", i915_gem_seqno_info, 0},
 190         {"i915_gem_interrupt", i915_interrupt_info, 0},
 191         {"i915_gem_hws", i915_hws_info, 0},
 192 };
 193 #define I915_GEM_DEBUGFS_ENTRIES ARRAY_SIZE(i915_gem_debugfs_list)
 194
 195 int i915_gem_debugfs_init(struct drm_minor *minor)
 196 {
 197         return drm_debugfs_create_files(i915_gem_debugfs_list,
 198                                         I915_GEM_DEBUGFS_ENTRIES,
 199                                         minor->debugfs_root, minor);
 200 }
 201
 202 void i915_gem_debugfs_cleanup(struct drm_minor *minor)
 203 {
 204         drm_debugfs_remove_files(i915_gem_debugfs_list,
 205                                  I915_GEM_DEBUGFS_ENTRIES, minor);
 206 }
 207
 208 #endif /* CONFIG_DEBUG_FS */
 209