drm/i915: move error state to own compilation unit
authorMika Kuoppala <mika.kuoppala@linux.intel.com>
Fri, 12 Jul 2013 13:50:57 +0000 (16:50 +0300)
committerDaniel Vetter <daniel.vetter@ffwll.ch>
Fri, 12 Jul 2013 16:53:13 +0000 (18:53 +0200)
Move error state generation and stringification to it's
own compilation unit. Sysfs also uses this so it can't be
under CONFIG_DEBUG_FS

This fixes a regression introduced in

commit ef86ddced720fddc3835558447a7f594d3609c73
Author: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Date:   Thu Jun 6 17:38:54 2013 +0300

    drm/i915: add error_state sysfs entry

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=66814
Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com>
Reported-by: kbuild test robot <fengguang.wu@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
drivers/gpu/drm/i915/Makefile
drivers/gpu/drm/i915/i915_debugfs.c
drivers/gpu/drm/i915/i915_drv.h
drivers/gpu/drm/i915/i915_gpu_error.c [new file with mode: 0644]
drivers/gpu/drm/i915/i915_irq.c
drivers/gpu/drm/i915/intel_display.c
drivers/gpu/drm/i915/intel_overlay.c

index 40034ecefd3b977a435f661f5f8a057392fb9fe0..9d1da7cceb21b6103f6b0cd09ed9776262d1420e 100644 (file)
@@ -5,6 +5,7 @@
 ccflags-y := -Iinclude/drm
 i915-y := i915_drv.o i915_dma.o i915_irq.o \
          i915_debugfs.o \
+         i915_gpu_error.o \
           i915_suspend.o \
          i915_gem.o \
          i915_gem_context.o \
index d4138124d9934cb1d587c0bf64846291b239fa70..86379799dab81bd73186f19bc128fbbb040f715b 100644 (file)
@@ -30,7 +30,6 @@
 #include <linux/debugfs.h>
 #include <linux/slab.h>
 #include <linux/export.h>
-#include <generated/utsrelease.h>
 #include <drm/drmP.h>
 #include "intel_drv.h"
 #include "intel_ringbuffer.h"
@@ -90,16 +89,6 @@ static const char *get_tiling_flag(struct drm_i915_gem_object *obj)
        }
 }
 
-static const char *cache_level_str(int type)
-{
-       switch (type) {
-       case I915_CACHE_NONE: return " uncached";
-       case I915_CACHE_LLC: return " snooped (LLC)";
-       case I915_CACHE_LLC_MLC: return " snooped (LLC+MLC)";
-       default: return "";
-       }
-}
-
 static void
 describe_obj(struct seq_file *m, struct drm_i915_gem_object *obj)
 {
@@ -113,7 +102,7 @@ describe_obj(struct seq_file *m, struct drm_i915_gem_object *obj)
                   obj->last_read_seqno,
                   obj->last_write_seqno,
                   obj->last_fenced_seqno,
-                  cache_level_str(obj->cache_level),
+                  i915_cache_level_str(obj->cache_level),
                   obj->dirty ? " dirty" : "",
                   obj->madv == I915_MADV_DONTNEED ? " purgeable" : "");
        if (obj->base.name)
@@ -608,358 +597,6 @@ static int i915_hws_info(struct seq_file *m, void *data)
        return 0;
 }
 
-static const char *ring_str(int ring)
-{
-       switch (ring) {
-       case RCS: return "render";
-       case VCS: return "bsd";
-       case BCS: return "blt";
-       case VECS: return "vebox";
-       default: return "";
-       }
-}
-
-static const char *pin_flag(int pinned)
-{
-       if (pinned > 0)
-               return " P";
-       else if (pinned < 0)
-               return " p";
-       else
-               return "";
-}
-
-static const char *tiling_flag(int tiling)
-{
-       switch (tiling) {
-       default:
-       case I915_TILING_NONE: return "";
-       case I915_TILING_X: return " X";
-       case I915_TILING_Y: return " Y";
-       }
-}
-
-static const char *dirty_flag(int dirty)
-{
-       return dirty ? " dirty" : "";
-}
-
-static const char *purgeable_flag(int purgeable)
-{
-       return purgeable ? " purgeable" : "";
-}
-
-static bool __i915_error_ok(struct drm_i915_error_state_buf *e)
-{
-
-       if (!e->err && WARN(e->bytes > (e->size - 1), "overflow")) {
-               e->err = -ENOSPC;
-               return false;
-       }
-
-       if (e->bytes == e->size - 1 || e->err)
-               return false;
-
-       return true;
-}
-
-static bool __i915_error_seek(struct drm_i915_error_state_buf *e,
-                             unsigned len)
-{
-       if (e->pos + len <= e->start) {
-               e->pos += len;
-               return false;
-       }
-
-       /* First vsnprintf needs to fit in its entirety for memmove */
-       if (len >= e->size) {
-               e->err = -EIO;
-               return false;
-       }
-
-       return true;
-}
-
-static void __i915_error_advance(struct drm_i915_error_state_buf *e,
-                                unsigned len)
-{
-       /* If this is first printf in this window, adjust it so that
-        * start position matches start of the buffer
-        */
-
-       if (e->pos < e->start) {
-               const size_t off = e->start - e->pos;
-
-               /* Should not happen but be paranoid */
-               if (off > len || e->bytes) {
-                       e->err = -EIO;
-                       return;
-               }
-
-               memmove(e->buf, e->buf + off, len - off);
-               e->bytes = len - off;
-               e->pos = e->start;
-               return;
-       }
-
-       e->bytes += len;
-       e->pos += len;
-}
-
-static void i915_error_vprintf(struct drm_i915_error_state_buf *e,
-                              const char *f, va_list args)
-{
-       unsigned len;
-
-       if (!__i915_error_ok(e))
-               return;
-
-       /* Seek the first printf which is hits start position */
-       if (e->pos < e->start) {
-               len = vsnprintf(NULL, 0, f, args);
-               if (!__i915_error_seek(e, len))
-                       return;
-       }
-
-       len = vsnprintf(e->buf + e->bytes, e->size - e->bytes, f, args);
-       if (len >= e->size - e->bytes)
-               len = e->size - e->bytes - 1;
-
-       __i915_error_advance(e, len);
-}
-
-static void i915_error_puts(struct drm_i915_error_state_buf *e,
-                           const char *str)
-{
-       unsigned len;
-
-       if (!__i915_error_ok(e))
-               return;
-
-       len = strlen(str);
-
-       /* Seek the first printf which is hits start position */
-       if (e->pos < e->start) {
-               if (!__i915_error_seek(e, len))
-                       return;
-       }
-
-       if (len >= e->size - e->bytes)
-               len = e->size - e->bytes - 1;
-       memcpy(e->buf + e->bytes, str, len);
-
-       __i915_error_advance(e, len);
-}
-
-void i915_error_printf(struct drm_i915_error_state_buf *e, const char *f, ...)
-{
-       va_list args;
-
-       va_start(args, f);
-       i915_error_vprintf(e, f, args);
-       va_end(args);
-}
-
-#define err_printf(e, ...) i915_error_printf(e, __VA_ARGS__)
-#define err_puts(e, s) i915_error_puts(e, s)
-
-static void print_error_buffers(struct drm_i915_error_state_buf *m,
-                               const char *name,
-                               struct drm_i915_error_buffer *err,
-                               int count)
-{
-       err_printf(m, "%s [%d]:\n", name, count);
-
-       while (count--) {
-               err_printf(m, "  %08x %8u %02x %02x %x %x",
-                          err->gtt_offset,
-                          err->size,
-                          err->read_domains,
-                          err->write_domain,
-                          err->rseqno, err->wseqno);
-               err_puts(m, pin_flag(err->pinned));
-               err_puts(m, tiling_flag(err->tiling));
-               err_puts(m, dirty_flag(err->dirty));
-               err_puts(m, purgeable_flag(err->purgeable));
-               err_puts(m, err->ring != -1 ? " " : "");
-               err_puts(m, ring_str(err->ring));
-               err_puts(m, cache_level_str(err->cache_level));
-
-               if (err->name)
-                       err_printf(m, " (name: %d)", err->name);
-               if (err->fence_reg != I915_FENCE_REG_NONE)
-                       err_printf(m, " (fence: %d)", err->fence_reg);
-
-               err_puts(m, "\n");
-               err++;
-       }
-}
-
-static void i915_ring_error_state(struct drm_i915_error_state_buf *m,
-                                 struct drm_device *dev,
-                                 struct drm_i915_error_state *error,
-                                 unsigned ring)
-{
-       BUG_ON(ring >= I915_NUM_RINGS); /* shut up confused gcc */
-       err_printf(m, "%s command stream:\n", ring_str(ring));
-       err_printf(m, "  HEAD: 0x%08x\n", error->head[ring]);
-       err_printf(m, "  TAIL: 0x%08x\n", error->tail[ring]);
-       err_printf(m, "  CTL: 0x%08x\n", error->ctl[ring]);
-       err_printf(m, "  ACTHD: 0x%08x\n", error->acthd[ring]);
-       err_printf(m, "  IPEIR: 0x%08x\n", error->ipeir[ring]);
-       err_printf(m, "  IPEHR: 0x%08x\n", error->ipehr[ring]);
-       err_printf(m, "  INSTDONE: 0x%08x\n", error->instdone[ring]);
-       if (ring == RCS && INTEL_INFO(dev)->gen >= 4)
-               err_printf(m, "  BBADDR: 0x%08llx\n", error->bbaddr);
-
-       if (INTEL_INFO(dev)->gen >= 4)
-               err_printf(m, "  INSTPS: 0x%08x\n", error->instps[ring]);
-       err_printf(m, "  INSTPM: 0x%08x\n", error->instpm[ring]);
-       err_printf(m, "  FADDR: 0x%08x\n", error->faddr[ring]);
-       if (INTEL_INFO(dev)->gen >= 6) {
-               err_printf(m, "  RC PSMI: 0x%08x\n", error->rc_psmi[ring]);
-               err_printf(m, "  FAULT_REG: 0x%08x\n", error->fault_reg[ring]);
-               err_printf(m, "  SYNC_0: 0x%08x [last synced 0x%08x]\n",
-                          error->semaphore_mboxes[ring][0],
-                          error->semaphore_seqno[ring][0]);
-               err_printf(m, "  SYNC_1: 0x%08x [last synced 0x%08x]\n",
-                          error->semaphore_mboxes[ring][1],
-                          error->semaphore_seqno[ring][1]);
-       }
-       err_printf(m, "  seqno: 0x%08x\n", error->seqno[ring]);
-       err_printf(m, "  waiting: %s\n", yesno(error->waiting[ring]));
-       err_printf(m, "  ring->head: 0x%08x\n", error->cpu_ring_head[ring]);
-       err_printf(m, "  ring->tail: 0x%08x\n", error->cpu_ring_tail[ring]);
-}
-
-int i915_error_state_to_str(struct drm_i915_error_state_buf *m,
-                           const struct i915_error_state_file_priv *error_priv)
-{
-       struct drm_device *dev = error_priv->dev;
-       drm_i915_private_t *dev_priv = dev->dev_private;
-       struct drm_i915_error_state *error = error_priv->error;
-       struct intel_ring_buffer *ring;
-       int i, j, page, offset, elt;
-
-       if (!error) {
-               err_printf(m, "no error state collected\n");
-               goto out;
-       }
-
-       err_printf(m, "Time: %ld s %ld us\n", error->time.tv_sec,
-                  error->time.tv_usec);
-       err_printf(m, "Kernel: " UTS_RELEASE "\n");
-       err_printf(m, "PCI ID: 0x%04x\n", dev->pci_device);
-       err_printf(m, "EIR: 0x%08x\n", error->eir);
-       err_printf(m, "IER: 0x%08x\n", error->ier);
-       err_printf(m, "PGTBL_ER: 0x%08x\n", error->pgtbl_er);
-       err_printf(m, "FORCEWAKE: 0x%08x\n", error->forcewake);
-       err_printf(m, "DERRMR: 0x%08x\n", error->derrmr);
-       err_printf(m, "CCID: 0x%08x\n", error->ccid);
-
-       for (i = 0; i < dev_priv->num_fence_regs; i++)
-               err_printf(m, "  fence[%d] = %08llx\n", i, error->fence[i]);
-
-       for (i = 0; i < ARRAY_SIZE(error->extra_instdone); i++)
-               err_printf(m, "  INSTDONE_%d: 0x%08x\n", i,
-                          error->extra_instdone[i]);
-
-       if (INTEL_INFO(dev)->gen >= 6) {
-               err_printf(m, "ERROR: 0x%08x\n", error->error);
-               err_printf(m, "DONE_REG: 0x%08x\n", error->done_reg);
-       }
-
-       if (INTEL_INFO(dev)->gen == 7)
-               err_printf(m, "ERR_INT: 0x%08x\n", error->err_int);
-
-       for_each_ring(ring, dev_priv, i)
-               i915_ring_error_state(m, dev, error, i);
-
-       if (error->active_bo)
-               print_error_buffers(m, "Active",
-                                   error->active_bo,
-                                   error->active_bo_count);
-
-       if (error->pinned_bo)
-               print_error_buffers(m, "Pinned",
-                                   error->pinned_bo,
-                                   error->pinned_bo_count);
-
-       for (i = 0; i < ARRAY_SIZE(error->ring); i++) {
-               struct drm_i915_error_object *obj;
-
-               if ((obj = error->ring[i].batchbuffer)) {
-                       err_printf(m, "%s --- gtt_offset = 0x%08x\n",
-                                  dev_priv->ring[i].name,
-                                  obj->gtt_offset);
-                       offset = 0;
-                       for (page = 0; page < obj->page_count; page++) {
-                               for (elt = 0; elt < PAGE_SIZE/4; elt++) {
-                                       err_printf(m, "%08x :  %08x\n", offset,
-                                                  obj->pages[page][elt]);
-                                       offset += 4;
-                               }
-                       }
-               }
-
-               if (error->ring[i].num_requests) {
-                       err_printf(m, "%s --- %d requests\n",
-                                  dev_priv->ring[i].name,
-                                  error->ring[i].num_requests);
-                       for (j = 0; j < error->ring[i].num_requests; j++) {
-                               err_printf(m, "  seqno 0x%08x, emitted %ld, tail 0x%08x\n",
-                                          error->ring[i].requests[j].seqno,
-                                          error->ring[i].requests[j].jiffies,
-                                          error->ring[i].requests[j].tail);
-                       }
-               }
-
-               if ((obj = error->ring[i].ringbuffer)) {
-                       err_printf(m, "%s --- ringbuffer = 0x%08x\n",
-                                  dev_priv->ring[i].name,
-                                  obj->gtt_offset);
-                       offset = 0;
-                       for (page = 0; page < obj->page_count; page++) {
-                               for (elt = 0; elt < PAGE_SIZE/4; elt++) {
-                                       err_printf(m, "%08x :  %08x\n",
-                                                  offset,
-                                                  obj->pages[page][elt]);
-                                       offset += 4;
-                               }
-                       }
-               }
-
-               obj = error->ring[i].ctx;
-               if (obj) {
-                       err_printf(m, "%s --- HW Context = 0x%08x\n",
-                                  dev_priv->ring[i].name,
-                                  obj->gtt_offset);
-                       offset = 0;
-                       for (elt = 0; elt < PAGE_SIZE/16; elt += 4) {
-                               err_printf(m, "[%04x] %08x %08x %08x %08x\n",
-                                          offset,
-                                          obj->pages[0][elt],
-                                          obj->pages[0][elt+1],
-                                          obj->pages[0][elt+2],
-                                          obj->pages[0][elt+3]);
-                                       offset += 16;
-                       }
-               }
-       }
-
-       if (error->overlay)
-               intel_overlay_print_error_state(m, error->overlay);
-
-       if (error->display)
-               intel_display_print_error_state(m, dev, error->display);
-
-out:
-       if (m->bytes == 0 && m->err)
-               return m->err;
-
-       return 0;
-}
-
 static ssize_t
 i915_error_state_write(struct file *filp,
                       const char __user *ubuf,
@@ -982,26 +619,6 @@ i915_error_state_write(struct file *filp,
        return cnt;
 }
 
-void i915_error_state_get(struct drm_device *dev,
-                         struct i915_error_state_file_priv *error_priv)
-{
-       struct drm_i915_private *dev_priv = dev->dev_private;
-       unsigned long flags;
-
-       spin_lock_irqsave(&dev_priv->gpu_error.lock, flags);
-       error_priv->error = dev_priv->gpu_error.first_error;
-       if (error_priv->error)
-               kref_get(&error_priv->error->ref);
-       spin_unlock_irqrestore(&dev_priv->gpu_error.lock, flags);
-
-}
-
-void i915_error_state_put(struct i915_error_state_file_priv *error_priv)
-{
-       if (error_priv->error)
-               kref_put(&error_priv->error->ref, i915_error_state_free);
-}
-
 static int i915_error_state_open(struct inode *inode, struct file *file)
 {
        struct drm_device *dev = inode->i_private;
@@ -1030,36 +647,6 @@ static int i915_error_state_release(struct inode *inode, struct file *file)
        return 0;
 }
 
-int i915_error_state_buf_init(struct drm_i915_error_state_buf *ebuf,
-                             size_t count, loff_t pos)
-{
-       memset(ebuf, 0, sizeof(*ebuf));
-
-       /* We need to have enough room to store any i915_error_state printf
-        * so that we can move it to start position.
-        */
-       ebuf->size = count + 1 > PAGE_SIZE ? count + 1 : PAGE_SIZE;
-       ebuf->buf = kmalloc(ebuf->size,
-                               GFP_TEMPORARY | __GFP_NORETRY | __GFP_NOWARN);
-
-       if (ebuf->buf == NULL) {
-               ebuf->size = PAGE_SIZE;
-               ebuf->buf = kmalloc(ebuf->size, GFP_TEMPORARY);
-       }
-
-       if (ebuf->buf == NULL) {
-               ebuf->size = 128;
-               ebuf->buf = kmalloc(ebuf->size, GFP_TEMPORARY);
-       }
-
-       if (ebuf->buf == NULL)
-               return -ENOMEM;
-
-       ebuf->start = pos;
-
-       return 0;
-}
-
 static ssize_t i915_error_state_read(struct file *file, char __user *userbuf,
                                     size_t count, loff_t *pos)
 {
index 846500a8586c2c24123eac469b2d490694c5f9b8..65d54edae17657b60e08b5453f25a8ffd54f212f 100644 (file)
@@ -1627,21 +1627,12 @@ extern void intel_hpd_init(struct drm_device *dev);
 extern void intel_gt_init(struct drm_device *dev);
 extern void intel_gt_reset(struct drm_device *dev);
 
-void i915_error_state_free(struct kref *error_ref);
-
 void
 i915_enable_pipestat(drm_i915_private_t *dev_priv, int pipe, u32 mask);
 
 void
 i915_disable_pipestat(drm_i915_private_t *dev_priv, int pipe, u32 mask);
 
-#ifdef CONFIG_DEBUG_FS
-extern void i915_destroy_error_state(struct drm_device *dev);
-#else
-#define i915_destroy_error_state(x)
-#endif
-
-
 /* i915_gem.c */
 int i915_gem_init_ioctl(struct drm_device *dev, void *data,
                        struct drm_file *file_priv);
@@ -1950,13 +1941,12 @@ void i915_gem_dump_object(struct drm_i915_gem_object *obj, int len,
 /* i915_debugfs.c */
 int i915_debugfs_init(struct drm_minor *minor);
 void i915_debugfs_cleanup(struct drm_minor *minor);
+
+/* i915_gpu_error.c */
 __printf(2, 3)
 void i915_error_printf(struct drm_i915_error_state_buf *e, const char *f, ...);
 int i915_error_state_to_str(struct drm_i915_error_state_buf *estr,
                            const struct i915_error_state_file_priv *error);
-void i915_error_state_get(struct drm_device *dev,
-                         struct i915_error_state_file_priv *error_priv);
-void i915_error_state_put(struct i915_error_state_file_priv *error_priv);
 int i915_error_state_buf_init(struct drm_i915_error_state_buf *eb,
                              size_t count, loff_t pos);
 static inline void i915_error_state_buf_release(
@@ -1964,6 +1954,14 @@ static inline void i915_error_state_buf_release(
 {
        kfree(eb->buf);
 }
+void i915_capture_error_state(struct drm_device *dev);
+void i915_error_state_get(struct drm_device *dev,
+                         struct i915_error_state_file_priv *error_priv);
+void i915_error_state_put(struct i915_error_state_file_priv *error_priv);
+void i915_destroy_error_state(struct drm_device *dev);
+
+void i915_get_extra_instdone(struct drm_device *dev, uint32_t *instdone);
+const char *i915_cache_level_str(int type);
 
 /* i915_suspend.c */
 extern int i915_save_state(struct drm_device *dev);
@@ -2043,7 +2041,6 @@ int i915_reg_read_ioctl(struct drm_device *dev, void *data,
                        struct drm_file *file);
 
 /* overlay */
-#ifdef CONFIG_DEBUG_FS
 extern struct intel_overlay_error_state *intel_overlay_capture_error_state(struct drm_device *dev);
 extern void intel_overlay_print_error_state(struct drm_i915_error_state_buf *e,
                                            struct intel_overlay_error_state *error);
@@ -2052,7 +2049,6 @@ extern struct intel_display_error_state *intel_display_capture_error_state(struc
 extern void intel_display_print_error_state(struct drm_i915_error_state_buf *e,
                                            struct drm_device *dev,
                                            struct intel_display_error_state *error);
-#endif
 
 /* On SNB platform, before reading ring registers forcewake bit
  * must be set to prevent GT core from power down and stale values being
diff --git a/drivers/gpu/drm/i915/i915_gpu_error.c b/drivers/gpu/drm/i915/i915_gpu_error.c
new file mode 100644 (file)
index 0000000..58386ce
--- /dev/null
@@ -0,0 +1,971 @@
+/*
+ * Copyright (c) 2008 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ *
+ * Authors:
+ *    Eric Anholt <eric@anholt.net>
+ *    Keith Packard <keithp@keithp.com>
+ *    Mika Kuoppala <mika.kuoppala@intel.com>
+ *
+ */
+
+#include <generated/utsrelease.h>
+#include "i915_drv.h"
+
+static const char *yesno(int v)
+{
+       return v ? "yes" : "no";
+}
+
+static const char *ring_str(int ring)
+{
+       switch (ring) {
+       case RCS: return "render";
+       case VCS: return "bsd";
+       case BCS: return "blt";
+       case VECS: return "vebox";
+       default: return "";
+       }
+}
+
+static const char *pin_flag(int pinned)
+{
+       if (pinned > 0)
+               return " P";
+       else if (pinned < 0)
+               return " p";
+       else
+               return "";
+}
+
+static const char *tiling_flag(int tiling)
+{
+       switch (tiling) {
+       default:
+       case I915_TILING_NONE: return "";
+       case I915_TILING_X: return " X";
+       case I915_TILING_Y: return " Y";
+       }
+}
+
+static const char *dirty_flag(int dirty)
+{
+       return dirty ? " dirty" : "";
+}
+
+static const char *purgeable_flag(int purgeable)
+{
+       return purgeable ? " purgeable" : "";
+}
+
+static bool __i915_error_ok(struct drm_i915_error_state_buf *e)
+{
+
+       if (!e->err && WARN(e->bytes > (e->size - 1), "overflow")) {
+               e->err = -ENOSPC;
+               return false;
+       }
+
+       if (e->bytes == e->size - 1 || e->err)
+               return false;
+
+       return true;
+}
+
+static bool __i915_error_seek(struct drm_i915_error_state_buf *e,
+                             unsigned len)
+{
+       if (e->pos + len <= e->start) {
+               e->pos += len;
+               return false;
+       }
+
+       /* First vsnprintf needs to fit in its entirety for memmove */
+       if (len >= e->size) {
+               e->err = -EIO;
+               return false;
+       }
+
+       return true;
+}
+
+static void __i915_error_advance(struct drm_i915_error_state_buf *e,
+                                unsigned len)
+{
+       /* If this is first printf in this window, adjust it so that
+        * start position matches start of the buffer
+        */
+
+       if (e->pos < e->start) {
+               const size_t off = e->start - e->pos;
+
+               /* Should not happen but be paranoid */
+               if (off > len || e->bytes) {
+                       e->err = -EIO;
+                       return;
+               }
+
+               memmove(e->buf, e->buf + off, len - off);
+               e->bytes = len - off;
+               e->pos = e->start;
+               return;
+       }
+
+       e->bytes += len;
+       e->pos += len;
+}
+
+static void i915_error_vprintf(struct drm_i915_error_state_buf *e,
+                              const char *f, va_list args)
+{
+       unsigned len;
+
+       if (!__i915_error_ok(e))
+               return;
+
+       /* Seek the first printf which is hits start position */
+       if (e->pos < e->start) {
+               len = vsnprintf(NULL, 0, f, args);
+               if (!__i915_error_seek(e, len))
+                       return;
+       }
+
+       len = vsnprintf(e->buf + e->bytes, e->size - e->bytes, f, args);
+       if (len >= e->size - e->bytes)
+               len = e->size - e->bytes - 1;
+
+       __i915_error_advance(e, len);
+}
+
+static void i915_error_puts(struct drm_i915_error_state_buf *e,
+                           const char *str)
+{
+       unsigned len;
+
+       if (!__i915_error_ok(e))
+               return;
+
+       len = strlen(str);
+
+       /* Seek the first printf which is hits start position */
+       if (e->pos < e->start) {
+               if (!__i915_error_seek(e, len))
+                       return;
+       }
+
+       if (len >= e->size - e->bytes)
+               len = e->size - e->bytes - 1;
+       memcpy(e->buf + e->bytes, str, len);
+
+       __i915_error_advance(e, len);
+}
+
+#define err_printf(e, ...) i915_error_printf(e, __VA_ARGS__)
+#define err_puts(e, s) i915_error_puts(e, s)
+
+static void print_error_buffers(struct drm_i915_error_state_buf *m,
+                               const char *name,
+                               struct drm_i915_error_buffer *err,
+                               int count)
+{
+       err_printf(m, "%s [%d]:\n", name, count);
+
+       while (count--) {
+               err_printf(m, "  %08x %8u %02x %02x %x %x",
+                          err->gtt_offset,
+                          err->size,
+                          err->read_domains,
+                          err->write_domain,
+                          err->rseqno, err->wseqno);
+               err_puts(m, pin_flag(err->pinned));
+               err_puts(m, tiling_flag(err->tiling));
+               err_puts(m, dirty_flag(err->dirty));
+               err_puts(m, purgeable_flag(err->purgeable));
+               err_puts(m, err->ring != -1 ? " " : "");
+               err_puts(m, ring_str(err->ring));
+               err_puts(m, i915_cache_level_str(err->cache_level));
+
+               if (err->name)
+                       err_printf(m, " (name: %d)", err->name);
+               if (err->fence_reg != I915_FENCE_REG_NONE)
+                       err_printf(m, " (fence: %d)", err->fence_reg);
+
+               err_puts(m, "\n");
+               err++;
+       }
+}
+
+static void i915_ring_error_state(struct drm_i915_error_state_buf *m,
+                                 struct drm_device *dev,
+                                 struct drm_i915_error_state *error,
+                                 unsigned ring)
+{
+       BUG_ON(ring >= I915_NUM_RINGS); /* shut up confused gcc */
+       err_printf(m, "%s command stream:\n", ring_str(ring));
+       err_printf(m, "  HEAD: 0x%08x\n", error->head[ring]);
+       err_printf(m, "  TAIL: 0x%08x\n", error->tail[ring]);
+       err_printf(m, "  CTL: 0x%08x\n", error->ctl[ring]);
+       err_printf(m, "  ACTHD: 0x%08x\n", error->acthd[ring]);
+       err_printf(m, "  IPEIR: 0x%08x\n", error->ipeir[ring]);
+       err_printf(m, "  IPEHR: 0x%08x\n", error->ipehr[ring]);
+       err_printf(m, "  INSTDONE: 0x%08x\n", error->instdone[ring]);
+       if (ring == RCS && INTEL_INFO(dev)->gen >= 4)
+               err_printf(m, "  BBADDR: 0x%08llx\n", error->bbaddr);
+
+       if (INTEL_INFO(dev)->gen >= 4)
+               err_printf(m, "  INSTPS: 0x%08x\n", error->instps[ring]);
+       err_printf(m, "  INSTPM: 0x%08x\n", error->instpm[ring]);
+       err_printf(m, "  FADDR: 0x%08x\n", error->faddr[ring]);
+       if (INTEL_INFO(dev)->gen >= 6) {
+               err_printf(m, "  RC PSMI: 0x%08x\n", error->rc_psmi[ring]);
+               err_printf(m, "  FAULT_REG: 0x%08x\n", error->fault_reg[ring]);
+               err_printf(m, "  SYNC_0: 0x%08x [last synced 0x%08x]\n",
+                          error->semaphore_mboxes[ring][0],
+                          error->semaphore_seqno[ring][0]);
+               err_printf(m, "  SYNC_1: 0x%08x [last synced 0x%08x]\n",
+                          error->semaphore_mboxes[ring][1],
+                          error->semaphore_seqno[ring][1]);
+       }
+       err_printf(m, "  seqno: 0x%08x\n", error->seqno[ring]);
+       err_printf(m, "  waiting: %s\n", yesno(error->waiting[ring]));
+       err_printf(m, "  ring->head: 0x%08x\n", error->cpu_ring_head[ring]);
+       err_printf(m, "  ring->tail: 0x%08x\n", error->cpu_ring_tail[ring]);
+}
+
+void i915_error_printf(struct drm_i915_error_state_buf *e, const char *f, ...)
+{
+       va_list args;
+
+       va_start(args, f);
+       i915_error_vprintf(e, f, args);
+       va_end(args);
+}
+
+int i915_error_state_to_str(struct drm_i915_error_state_buf *m,
+                           const struct i915_error_state_file_priv *error_priv)
+{
+       struct drm_device *dev = error_priv->dev;
+       drm_i915_private_t *dev_priv = dev->dev_private;
+       struct drm_i915_error_state *error = error_priv->error;
+       struct intel_ring_buffer *ring;
+       int i, j, page, offset, elt;
+
+       if (!error) {
+               err_printf(m, "no error state collected\n");
+               goto out;
+       }
+
+       err_printf(m, "Time: %ld s %ld us\n", error->time.tv_sec,
+                  error->time.tv_usec);
+       err_printf(m, "Kernel: " UTS_RELEASE "\n");
+       err_printf(m, "PCI ID: 0x%04x\n", dev->pci_device);
+       err_printf(m, "EIR: 0x%08x\n", error->eir);
+       err_printf(m, "IER: 0x%08x\n", error->ier);
+       err_printf(m, "PGTBL_ER: 0x%08x\n", error->pgtbl_er);
+       err_printf(m, "FORCEWAKE: 0x%08x\n", error->forcewake);
+       err_printf(m, "DERRMR: 0x%08x\n", error->derrmr);
+       err_printf(m, "CCID: 0x%08x\n", error->ccid);
+
+       for (i = 0; i < dev_priv->num_fence_regs; i++)
+               err_printf(m, "  fence[%d] = %08llx\n", i, error->fence[i]);
+
+       for (i = 0; i < ARRAY_SIZE(error->extra_instdone); i++)
+               err_printf(m, "  INSTDONE_%d: 0x%08x\n", i,
+                          error->extra_instdone[i]);
+
+       if (INTEL_INFO(dev)->gen >= 6) {
+               err_printf(m, "ERROR: 0x%08x\n", error->error);
+               err_printf(m, "DONE_REG: 0x%08x\n", error->done_reg);
+       }
+
+       if (INTEL_INFO(dev)->gen == 7)
+               err_printf(m, "ERR_INT: 0x%08x\n", error->err_int);
+
+       for_each_ring(ring, dev_priv, i)
+               i915_ring_error_state(m, dev, error, i);
+
+       if (error->active_bo)
+               print_error_buffers(m, "Active",
+                                   error->active_bo,
+                                   error->active_bo_count);
+
+       if (error->pinned_bo)
+               print_error_buffers(m, "Pinned",
+                                   error->pinned_bo,
+                                   error->pinned_bo_count);
+
+       for (i = 0; i < ARRAY_SIZE(error->ring); i++) {
+               struct drm_i915_error_object *obj;
+
+               if ((obj = error->ring[i].batchbuffer)) {
+                       err_printf(m, "%s --- gtt_offset = 0x%08x\n",
+                                  dev_priv->ring[i].name,
+                                  obj->gtt_offset);
+                       offset = 0;
+                       for (page = 0; page < obj->page_count; page++) {
+                               for (elt = 0; elt < PAGE_SIZE/4; elt++) {
+                                       err_printf(m, "%08x :  %08x\n", offset,
+                                                  obj->pages[page][elt]);
+                                       offset += 4;
+                               }
+                       }
+               }
+
+               if (error->ring[i].num_requests) {
+                       err_printf(m, "%s --- %d requests\n",
+                                  dev_priv->ring[i].name,
+                                  error->ring[i].num_requests);
+                       for (j = 0; j < error->ring[i].num_requests; j++) {
+                               err_printf(m, "  seqno 0x%08x, emitted %ld, tail 0x%08x\n",
+                                          error->ring[i].requests[j].seqno,
+                                          error->ring[i].requests[j].jiffies,
+                                          error->ring[i].requests[j].tail);
+                       }
+               }
+
+               if ((obj = error->ring[i].ringbuffer)) {
+                       err_printf(m, "%s --- ringbuffer = 0x%08x\n",
+                                  dev_priv->ring[i].name,
+                                  obj->gtt_offset);
+                       offset = 0;
+                       for (page = 0; page < obj->page_count; page++) {
+                               for (elt = 0; elt < PAGE_SIZE/4; elt++) {
+                                       err_printf(m, "%08x :  %08x\n",
+                                                  offset,
+                                                  obj->pages[page][elt]);
+                                       offset += 4;
+                               }
+                       }
+               }
+
+               obj = error->ring[i].ctx;
+               if (obj) {
+                       err_printf(m, "%s --- HW Context = 0x%08x\n",
+                                  dev_priv->ring[i].name,
+                                  obj->gtt_offset);
+                       offset = 0;
+                       for (elt = 0; elt < PAGE_SIZE/16; elt += 4) {
+                               err_printf(m, "[%04x] %08x %08x %08x %08x\n",
+                                          offset,
+                                          obj->pages[0][elt],
+                                          obj->pages[0][elt+1],
+                                          obj->pages[0][elt+2],
+                                          obj->pages[0][elt+3]);
+                                       offset += 16;
+                       }
+               }
+       }
+
+       if (error->overlay)
+               intel_overlay_print_error_state(m, error->overlay);
+
+       if (error->display)
+               intel_display_print_error_state(m, dev, error->display);
+
+out:
+       if (m->bytes == 0 && m->err)
+               return m->err;
+
+       return 0;
+}
+
+int i915_error_state_buf_init(struct drm_i915_error_state_buf *ebuf,
+                             size_t count, loff_t pos)
+{
+       memset(ebuf, 0, sizeof(*ebuf));
+
+       /* We need to have enough room to store any i915_error_state printf
+        * so that we can move it to start position.
+        */
+       ebuf->size = count + 1 > PAGE_SIZE ? count + 1 : PAGE_SIZE;
+       ebuf->buf = kmalloc(ebuf->size,
+                               GFP_TEMPORARY | __GFP_NORETRY | __GFP_NOWARN);
+
+       if (ebuf->buf == NULL) {
+               ebuf->size = PAGE_SIZE;
+               ebuf->buf = kmalloc(ebuf->size, GFP_TEMPORARY);
+       }
+
+       if (ebuf->buf == NULL) {
+               ebuf->size = 128;
+               ebuf->buf = kmalloc(ebuf->size, GFP_TEMPORARY);
+       }
+
+       if (ebuf->buf == NULL)
+               return -ENOMEM;
+
+       ebuf->start = pos;
+
+       return 0;
+}
+
+static void i915_error_object_free(struct drm_i915_error_object *obj)
+{
+       int page;
+
+       if (obj == NULL)
+               return;
+
+       for (page = 0; page < obj->page_count; page++)
+               kfree(obj->pages[page]);
+
+       kfree(obj);
+}
+
+static void i915_error_state_free(struct kref *error_ref)
+{
+       struct drm_i915_error_state *error = container_of(error_ref,
+                                                         typeof(*error), ref);
+       int i;
+
+       for (i = 0; i < ARRAY_SIZE(error->ring); i++) {
+               i915_error_object_free(error->ring[i].batchbuffer);
+               i915_error_object_free(error->ring[i].ringbuffer);
+               i915_error_object_free(error->ring[i].ctx);
+               kfree(error->ring[i].requests);
+       }
+
+       kfree(error->active_bo);
+       kfree(error->overlay);
+       kfree(error->display);
+       kfree(error);
+}
+
+static struct drm_i915_error_object *
+i915_error_object_create_sized(struct drm_i915_private *dev_priv,
+                              struct drm_i915_gem_object *src,
+                              const int num_pages)
+{
+       struct drm_i915_error_object *dst;
+       int i;
+       u32 reloc_offset;
+
+       if (src == NULL || src->pages == NULL)
+               return NULL;
+
+       dst = kmalloc(sizeof(*dst) + num_pages * sizeof(u32 *), GFP_ATOMIC);
+       if (dst == NULL)
+               return NULL;
+
+       reloc_offset = dst->gtt_offset = i915_gem_obj_ggtt_offset(src);
+       for (i = 0; i < num_pages; i++) {
+               unsigned long flags;
+               void *d;
+
+               d = kmalloc(PAGE_SIZE, GFP_ATOMIC);
+               if (d == NULL)
+                       goto unwind;
+
+               local_irq_save(flags);
+               if (reloc_offset < dev_priv->gtt.mappable_end &&
+                   src->has_global_gtt_mapping) {
+                       void __iomem *s;
+
+                       /* Simply ignore tiling or any overlapping fence.
+                        * It's part of the error state, and this hopefully
+                        * captures what the GPU read.
+                        */
+
+                       s = io_mapping_map_atomic_wc(dev_priv->gtt.mappable,
+                                                    reloc_offset);
+                       memcpy_fromio(d, s, PAGE_SIZE);
+                       io_mapping_unmap_atomic(s);
+               } else if (src->stolen) {
+                       unsigned long offset;
+
+                       offset = dev_priv->mm.stolen_base;
+                       offset += src->stolen->start;
+                       offset += i << PAGE_SHIFT;
+
+                       memcpy_fromio(d, (void __iomem *) offset, PAGE_SIZE);
+               } else {
+                       struct page *page;
+                       void *s;
+
+                       page = i915_gem_object_get_page(src, i);
+
+                       drm_clflush_pages(&page, 1);
+
+                       s = kmap_atomic(page);
+                       memcpy(d, s, PAGE_SIZE);
+                       kunmap_atomic(s);
+
+                       drm_clflush_pages(&page, 1);
+               }
+               local_irq_restore(flags);
+
+               dst->pages[i] = d;
+
+               reloc_offset += PAGE_SIZE;
+       }
+       dst->page_count = num_pages;
+
+       return dst;
+
+unwind:
+       while (i--)
+               kfree(dst->pages[i]);
+       kfree(dst);
+       return NULL;
+}
+#define i915_error_object_create(dev_priv, src) \
+       i915_error_object_create_sized((dev_priv), (src), \
+                                      (src)->base.size>>PAGE_SHIFT)
+
+static void capture_bo(struct drm_i915_error_buffer *err,
+                      struct drm_i915_gem_object *obj)
+{
+       err->size = obj->base.size;
+       err->name = obj->base.name;
+       err->rseqno = obj->last_read_seqno;
+       err->wseqno = obj->last_write_seqno;
+       err->gtt_offset = i915_gem_obj_ggtt_offset(obj);
+       err->read_domains = obj->base.read_domains;
+       err->write_domain = obj->base.write_domain;
+       err->fence_reg = obj->fence_reg;
+       err->pinned = 0;
+       if (obj->pin_count > 0)
+               err->pinned = 1;
+       if (obj->user_pin_count > 0)
+               err->pinned = -1;
+       err->tiling = obj->tiling_mode;
+       err->dirty = obj->dirty;
+       err->purgeable = obj->madv != I915_MADV_WILLNEED;
+       err->ring = obj->ring ? obj->ring->id : -1;
+       err->cache_level = obj->cache_level;
+}
+
+static u32 capture_active_bo(struct drm_i915_error_buffer *err,
+                            int count, struct list_head *head)
+{
+       struct drm_i915_gem_object *obj;
+       int i = 0;
+
+       list_for_each_entry(obj, head, mm_list) {
+               capture_bo(err++, obj);
+               if (++i == count)
+                       break;
+       }
+
+       return i;
+}
+
+static u32 capture_pinned_bo(struct drm_i915_error_buffer *err,
+                            int count, struct list_head *head)
+{
+       struct drm_i915_gem_object *obj;
+       int i = 0;
+
+       list_for_each_entry(obj, head, global_list) {
+               if (obj->pin_count == 0)
+                       continue;
+
+               capture_bo(err++, obj);
+               if (++i == count)
+                       break;
+       }
+
+       return i;
+}
+
+static void i915_gem_record_fences(struct drm_device *dev,
+                                  struct drm_i915_error_state *error)
+{
+       struct drm_i915_private *dev_priv = dev->dev_private;
+       int i;
+
+       /* Fences */
+       switch (INTEL_INFO(dev)->gen) {
+       case 7:
+       case 6:
+               for (i = 0; i < dev_priv->num_fence_regs; i++)
+                       error->fence[i] = I915_READ64(FENCE_REG_SANDYBRIDGE_0 + (i * 8));
+               break;
+       case 5:
+       case 4:
+               for (i = 0; i < 16; i++)
+                       error->fence[i] = I915_READ64(FENCE_REG_965_0 + (i * 8));
+               break;
+       case 3:
+               if (IS_I945G(dev) || IS_I945GM(dev) || IS_G33(dev))
+                       for (i = 0; i < 8; i++)
+                               error->fence[i+8] = I915_READ(FENCE_REG_945_8 + (i * 4));
+       case 2:
+               for (i = 0; i < 8; i++)
+                       error->fence[i] = I915_READ(FENCE_REG_830_0 + (i * 4));
+               break;
+
+       default:
+               BUG();
+       }
+}
+
+static struct drm_i915_error_object *
+i915_error_first_batchbuffer(struct drm_i915_private *dev_priv,
+                            struct intel_ring_buffer *ring)
+{
+       struct drm_i915_gem_object *obj;
+       u32 seqno;
+
+       if (!ring->get_seqno)
+               return NULL;
+
+       if (HAS_BROKEN_CS_TLB(dev_priv->dev)) {
+               u32 acthd = I915_READ(ACTHD);
+
+               if (WARN_ON(ring->id != RCS))
+                       return NULL;
+
+               obj = ring->private;
+               if (acthd >= i915_gem_obj_ggtt_offset(obj) &&
+                   acthd < i915_gem_obj_ggtt_offset(obj) + obj->base.size)
+                       return i915_error_object_create(dev_priv, obj);
+       }
+
+       seqno = ring->get_seqno(ring, false);
+       list_for_each_entry(obj, &dev_priv->mm.active_list, mm_list) {
+               if (obj->ring != ring)
+                       continue;
+
+               if (i915_seqno_passed(seqno, obj->last_read_seqno))
+                       continue;
+
+               if ((obj->base.read_domains & I915_GEM_DOMAIN_COMMAND) == 0)
+                       continue;
+
+               /* We need to copy these to an anonymous buffer as the simplest
+                * method to avoid being overwritten by userspace.
+                */
+               return i915_error_object_create(dev_priv, obj);
+       }
+
+       return NULL;
+}
+
+static void i915_record_ring_state(struct drm_device *dev,
+                                  struct drm_i915_error_state *error,
+                                  struct intel_ring_buffer *ring)
+{
+       struct drm_i915_private *dev_priv = dev->dev_private;
+
+       if (INTEL_INFO(dev)->gen >= 6) {
+               error->rc_psmi[ring->id] = I915_READ(ring->mmio_base + 0x50);
+               error->fault_reg[ring->id] = I915_READ(RING_FAULT_REG(ring));
+               error->semaphore_mboxes[ring->id][0]
+                       = I915_READ(RING_SYNC_0(ring->mmio_base));
+               error->semaphore_mboxes[ring->id][1]
+                       = I915_READ(RING_SYNC_1(ring->mmio_base));
+               error->semaphore_seqno[ring->id][0] = ring->sync_seqno[0];
+               error->semaphore_seqno[ring->id][1] = ring->sync_seqno[1];
+       }
+
+       if (INTEL_INFO(dev)->gen >= 4) {
+               error->faddr[ring->id] = I915_READ(RING_DMA_FADD(ring->mmio_base));
+               error->ipeir[ring->id] = I915_READ(RING_IPEIR(ring->mmio_base));
+               error->ipehr[ring->id] = I915_READ(RING_IPEHR(ring->mmio_base));
+               error->instdone[ring->id] = I915_READ(RING_INSTDONE(ring->mmio_base));
+               error->instps[ring->id] = I915_READ(RING_INSTPS(ring->mmio_base));
+               if (ring->id == RCS)
+                       error->bbaddr = I915_READ64(BB_ADDR);
+       } else {
+               error->faddr[ring->id] = I915_READ(DMA_FADD_I8XX);
+               error->ipeir[ring->id] = I915_READ(IPEIR);
+               error->ipehr[ring->id] = I915_READ(IPEHR);
+               error->instdone[ring->id] = I915_READ(INSTDONE);
+       }
+
+       error->waiting[ring->id] = waitqueue_active(&ring->irq_queue);
+       error->instpm[ring->id] = I915_READ(RING_INSTPM(ring->mmio_base));
+       error->seqno[ring->id] = ring->get_seqno(ring, false);
+       error->acthd[ring->id] = intel_ring_get_active_head(ring);
+       error->head[ring->id] = I915_READ_HEAD(ring);
+       error->tail[ring->id] = I915_READ_TAIL(ring);
+       error->ctl[ring->id] = I915_READ_CTL(ring);
+
+       error->cpu_ring_head[ring->id] = ring->head;
+       error->cpu_ring_tail[ring->id] = ring->tail;
+}
+
+
+static void i915_gem_record_active_context(struct intel_ring_buffer *ring,
+                                          struct drm_i915_error_state *error,
+                                          struct drm_i915_error_ring *ering)
+{
+       struct drm_i915_private *dev_priv = ring->dev->dev_private;
+       struct drm_i915_gem_object *obj;
+
+       /* Currently render ring is the only HW context user */
+       if (ring->id != RCS || !error->ccid)
+               return;
+
+       list_for_each_entry(obj, &dev_priv->mm.bound_list, global_list) {
+               if ((error->ccid & PAGE_MASK) == i915_gem_obj_ggtt_offset(obj)) {
+                       ering->ctx = i915_error_object_create_sized(dev_priv,
+                                                                   obj, 1);
+                       break;
+               }
+       }
+}
+
+static void i915_gem_record_rings(struct drm_device *dev,
+                                 struct drm_i915_error_state *error)
+{
+       struct drm_i915_private *dev_priv = dev->dev_private;
+       struct intel_ring_buffer *ring;
+       struct drm_i915_gem_request *request;
+       int i, count;
+
+       for_each_ring(ring, dev_priv, i) {
+               i915_record_ring_state(dev, error, ring);
+
+               error->ring[i].batchbuffer =
+                       i915_error_first_batchbuffer(dev_priv, ring);
+
+               error->ring[i].ringbuffer =
+                       i915_error_object_create(dev_priv, ring->obj);
+
+
+               i915_gem_record_active_context(ring, error, &error->ring[i]);
+
+               count = 0;
+               list_for_each_entry(request, &ring->request_list, list)
+                       count++;
+
+               error->ring[i].num_requests = count;
+               error->ring[i].requests =
+                       kmalloc(count*sizeof(struct drm_i915_error_request),
+                               GFP_ATOMIC);
+               if (error->ring[i].requests == NULL) {
+                       error->ring[i].num_requests = 0;
+                       continue;
+               }
+
+               count = 0;
+               list_for_each_entry(request, &ring->request_list, list) {
+                       struct drm_i915_error_request *erq;
+
+                       erq = &error->ring[i].requests[count++];
+                       erq->seqno = request->seqno;
+                       erq->jiffies = request->emitted_jiffies;
+                       erq->tail = request->tail;
+               }
+       }
+}
+
+static void i915_gem_capture_buffers(struct drm_i915_private *dev_priv,
+                                    struct drm_i915_error_state *error)
+{
+       struct drm_i915_gem_object *obj;
+       int i;
+
+       i = 0;
+       list_for_each_entry(obj, &dev_priv->mm.active_list, mm_list)
+               i++;
+       error->active_bo_count = i;
+       list_for_each_entry(obj, &dev_priv->mm.bound_list, global_list)
+               if (obj->pin_count)
+                       i++;
+       error->pinned_bo_count = i - error->active_bo_count;
+
+       if (i) {
+               error->active_bo = kmalloc(sizeof(*error->active_bo)*i,
+                                          GFP_ATOMIC);
+               if (error->active_bo)
+                       error->pinned_bo =
+                               error->active_bo + error->active_bo_count;
+       }
+
+       if (error->active_bo)
+               error->active_bo_count =
+                       capture_active_bo(error->active_bo,
+                                         error->active_bo_count,
+                                         &dev_priv->mm.active_list);
+
+       if (error->pinned_bo)
+               error->pinned_bo_count =
+                       capture_pinned_bo(error->pinned_bo,
+                                         error->pinned_bo_count,
+                                         &dev_priv->mm.bound_list);
+}
+
+/**
+ * i915_capture_error_state - capture an error record for later analysis
+ * @dev: drm device
+ *
+ * Should be called when an error is detected (either a hang or an error
+ * interrupt) to capture error state from the time of the error.  Fills
+ * out a structure which becomes available in debugfs for user level tools
+ * to pick up.
+ */
+void i915_capture_error_state(struct drm_device *dev)
+{
+       struct drm_i915_private *dev_priv = dev->dev_private;
+       struct drm_i915_error_state *error;
+       unsigned long flags;
+       int pipe;
+
+       spin_lock_irqsave(&dev_priv->gpu_error.lock, flags);
+       error = dev_priv->gpu_error.first_error;
+       spin_unlock_irqrestore(&dev_priv->gpu_error.lock, flags);
+       if (error)
+               return;
+
+       /* Account for pipe specific data like PIPE*STAT */
+       error = kzalloc(sizeof(*error), GFP_ATOMIC);
+       if (!error) {
+               DRM_DEBUG_DRIVER("out of memory, not capturing error state\n");
+               return;
+       }
+
+       DRM_INFO("capturing error event; look for more information in "
+                "/sys/class/drm/card%d/error\n", dev->primary->index);
+
+       kref_init(&error->ref);
+       error->eir = I915_READ(EIR);
+       error->pgtbl_er = I915_READ(PGTBL_ER);
+       if (HAS_HW_CONTEXTS(dev))
+               error->ccid = I915_READ(CCID);
+
+       if (HAS_PCH_SPLIT(dev))
+               error->ier = I915_READ(DEIER) | I915_READ(GTIER);
+       else if (IS_VALLEYVIEW(dev))
+               error->ier = I915_READ(GTIER) | I915_READ(VLV_IER);
+       else if (IS_GEN2(dev))
+               error->ier = I915_READ16(IER);
+       else
+               error->ier = I915_READ(IER);
+
+       if (INTEL_INFO(dev)->gen >= 6)
+               error->derrmr = I915_READ(DERRMR);
+
+       if (IS_VALLEYVIEW(dev))
+               error->forcewake = I915_READ(FORCEWAKE_VLV);
+       else if (INTEL_INFO(dev)->gen >= 7)
+               error->forcewake = I915_READ(FORCEWAKE_MT);
+       else if (INTEL_INFO(dev)->gen == 6)
+               error->forcewake = I915_READ(FORCEWAKE);
+
+       if (!HAS_PCH_SPLIT(dev))
+               for_each_pipe(pipe)
+                       error->pipestat[pipe] = I915_READ(PIPESTAT(pipe));
+
+       if (INTEL_INFO(dev)->gen >= 6) {
+               error->error = I915_READ(ERROR_GEN6);
+               error->done_reg = I915_READ(DONE_REG);
+       }
+
+       if (INTEL_INFO(dev)->gen == 7)
+               error->err_int = I915_READ(GEN7_ERR_INT);
+
+       i915_get_extra_instdone(dev, error->extra_instdone);
+
+       i915_gem_capture_buffers(dev_priv, error);
+       i915_gem_record_fences(dev, error);
+       i915_gem_record_rings(dev, error);
+
+       do_gettimeofday(&error->time);
+
+       error->overlay = intel_overlay_capture_error_state(dev);
+       error->display = intel_display_capture_error_state(dev);
+
+       spin_lock_irqsave(&dev_priv->gpu_error.lock, flags);
+       if (dev_priv->gpu_error.first_error == NULL) {
+               dev_priv->gpu_error.first_error = error;
+               error = NULL;
+       }
+       spin_unlock_irqrestore(&dev_priv->gpu_error.lock, flags);
+
+       if (error)
+               i915_error_state_free(&error->ref);
+}
+
+void i915_error_state_get(struct drm_device *dev,
+                         struct i915_error_state_file_priv *error_priv)
+{
+       struct drm_i915_private *dev_priv = dev->dev_private;
+       unsigned long flags;
+
+       spin_lock_irqsave(&dev_priv->gpu_error.lock, flags);
+       error_priv->error = dev_priv->gpu_error.first_error;
+       if (error_priv->error)
+               kref_get(&error_priv->error->ref);
+       spin_unlock_irqrestore(&dev_priv->gpu_error.lock, flags);
+
+}
+
+void i915_error_state_put(struct i915_error_state_file_priv *error_priv)
+{
+       if (error_priv->error)
+               kref_put(&error_priv->error->ref, i915_error_state_free);
+}
+
+void i915_destroy_error_state(struct drm_device *dev)
+{
+       struct drm_i915_private *dev_priv = dev->dev_private;
+       struct drm_i915_error_state *error;
+       unsigned long flags;
+
+       spin_lock_irqsave(&dev_priv->gpu_error.lock, flags);
+       error = dev_priv->gpu_error.first_error;
+       dev_priv->gpu_error.first_error = NULL;
+       spin_unlock_irqrestore(&dev_priv->gpu_error.lock, flags);
+
+       if (error)
+               kref_put(&error->ref, i915_error_state_free);
+}
+
+const char *i915_cache_level_str(int type)
+{
+       switch (type) {
+       case I915_CACHE_NONE: return " uncached";
+       case I915_CACHE_LLC: return " snooped (LLC)";
+       case I915_CACHE_LLC_MLC: return " snooped (LLC+MLC)";
+       default: return "";
+       }
+}
+
+/* NB: please notice the memset */
+void i915_get_extra_instdone(struct drm_device *dev, uint32_t *instdone)
+{
+       struct drm_i915_private *dev_priv = dev->dev_private;
+       memset(instdone, 0, sizeof(*instdone) * I915_NUM_INSTDONE_REG);
+
+       switch (INTEL_INFO(dev)->gen) {
+       case 2:
+       case 3:
+               instdone[0] = I915_READ(INSTDONE);
+               break;
+       case 4:
+       case 5:
+       case 6:
+               instdone[0] = I915_READ(INSTDONE_I965);
+               instdone[1] = I915_READ(INSTDONE1);
+               break;
+       default:
+               WARN_ONCE(1, "Unsupported platform\n");
+       case 7:
+               instdone[0] = I915_READ(GEN7_INSTDONE_1);
+               instdone[1] = I915_READ(GEN7_SC_INSTDONE);
+               instdone[2] = I915_READ(GEN7_SAMPLER_INSTDONE);
+               instdone[3] = I915_READ(GEN7_ROW_INSTDONE);
+               break;
+       }
+}
index cf1a21a9728a6f0f2d420fa140bbeb61800a6732..64db680fb7a473067bab80010cf4c0c7b723857d 100644 (file)
@@ -1493,535 +1493,6 @@ static void i915_error_work_func(struct work_struct *work)
        }
 }
 
-/* NB: please notice the memset */
-static void i915_get_extra_instdone(struct drm_device *dev,
-                                   uint32_t *instdone)
-{
-       struct drm_i915_private *dev_priv = dev->dev_private;
-       memset(instdone, 0, sizeof(*instdone) * I915_NUM_INSTDONE_REG);
-
-       switch(INTEL_INFO(dev)->gen) {
-       case 2:
-       case 3:
-               instdone[0] = I915_READ(INSTDONE);
-               break;
-       case 4:
-       case 5:
-       case 6:
-               instdone[0] = I915_READ(INSTDONE_I965);
-               instdone[1] = I915_READ(INSTDONE1);
-               break;
-       default:
-               WARN_ONCE(1, "Unsupported platform\n");
-       case 7:
-               instdone[0] = I915_READ(GEN7_INSTDONE_1);
-               instdone[1] = I915_READ(GEN7_SC_INSTDONE);
-               instdone[2] = I915_READ(GEN7_SAMPLER_INSTDONE);
-               instdone[3] = I915_READ(GEN7_ROW_INSTDONE);
-               break;
-       }
-}
-
-#ifdef CONFIG_DEBUG_FS
-static struct drm_i915_error_object *
-i915_error_object_create_sized(struct drm_i915_private *dev_priv,
-                              struct drm_i915_gem_object *src,
-                              const int num_pages)
-{
-       struct drm_i915_error_object *dst;
-       int i;
-       u32 reloc_offset;
-
-       if (src == NULL || src->pages == NULL)
-               return NULL;
-
-       dst = kmalloc(sizeof(*dst) + num_pages * sizeof(u32 *), GFP_ATOMIC);
-       if (dst == NULL)
-               return NULL;
-
-       reloc_offset = dst->gtt_offset = i915_gem_obj_ggtt_offset(src);
-       for (i = 0; i < num_pages; i++) {
-               unsigned long flags;
-               void *d;
-
-               d = kmalloc(PAGE_SIZE, GFP_ATOMIC);
-               if (d == NULL)
-                       goto unwind;
-
-               local_irq_save(flags);
-               if (reloc_offset < dev_priv->gtt.mappable_end &&
-                   src->has_global_gtt_mapping) {
-                       void __iomem *s;
-
-                       /* Simply ignore tiling or any overlapping fence.
-                        * It's part of the error state, and this hopefully
-                        * captures what the GPU read.
-                        */
-
-                       s = io_mapping_map_atomic_wc(dev_priv->gtt.mappable,
-                                                    reloc_offset);
-                       memcpy_fromio(d, s, PAGE_SIZE);
-                       io_mapping_unmap_atomic(s);
-               } else if (src->stolen) {
-                       unsigned long offset;
-
-                       offset = dev_priv->mm.stolen_base;
-                       offset += src->stolen->start;
-                       offset += i << PAGE_SHIFT;
-
-                       memcpy_fromio(d, (void __iomem *) offset, PAGE_SIZE);
-               } else {
-                       struct page *page;
-                       void *s;
-
-                       page = i915_gem_object_get_page(src, i);
-
-                       drm_clflush_pages(&page, 1);
-
-                       s = kmap_atomic(page);
-                       memcpy(d, s, PAGE_SIZE);
-                       kunmap_atomic(s);
-
-                       drm_clflush_pages(&page, 1);
-               }
-               local_irq_restore(flags);
-
-               dst->pages[i] = d;
-
-               reloc_offset += PAGE_SIZE;
-       }
-       dst->page_count = num_pages;
-
-       return dst;
-
-unwind:
-       while (i--)
-               kfree(dst->pages[i]);
-       kfree(dst);
-       return NULL;
-}
-#define i915_error_object_create(dev_priv, src) \
-       i915_error_object_create_sized((dev_priv), (src), \
-                                      (src)->base.size>>PAGE_SHIFT)
-
-static void
-i915_error_object_free(struct drm_i915_error_object *obj)
-{
-       int page;
-
-       if (obj == NULL)
-               return;
-
-       for (page = 0; page < obj->page_count; page++)
-               kfree(obj->pages[page]);
-
-       kfree(obj);
-}
-
-void
-i915_error_state_free(struct kref *error_ref)
-{
-       struct drm_i915_error_state *error = container_of(error_ref,
-                                                         typeof(*error), ref);
-       int i;
-
-       for (i = 0; i < ARRAY_SIZE(error->ring); i++) {
-               i915_error_object_free(error->ring[i].batchbuffer);
-               i915_error_object_free(error->ring[i].ringbuffer);
-               i915_error_object_free(error->ring[i].ctx);
-               kfree(error->ring[i].requests);
-       }
-
-       kfree(error->active_bo);
-       kfree(error->overlay);
-       kfree(error->display);
-       kfree(error);
-}
-static void capture_bo(struct drm_i915_error_buffer *err,
-                      struct drm_i915_gem_object *obj)
-{
-       err->size = obj->base.size;
-       err->name = obj->base.name;
-       err->rseqno = obj->last_read_seqno;
-       err->wseqno = obj->last_write_seqno;
-       err->gtt_offset = i915_gem_obj_ggtt_offset(obj);
-       err->read_domains = obj->base.read_domains;
-       err->write_domain = obj->base.write_domain;
-       err->fence_reg = obj->fence_reg;
-       err->pinned = 0;
-       if (obj->pin_count > 0)
-               err->pinned = 1;
-       if (obj->user_pin_count > 0)
-               err->pinned = -1;
-       err->tiling = obj->tiling_mode;
-       err->dirty = obj->dirty;
-       err->purgeable = obj->madv != I915_MADV_WILLNEED;
-       err->ring = obj->ring ? obj->ring->id : -1;
-       err->cache_level = obj->cache_level;
-}
-
-static u32 capture_active_bo(struct drm_i915_error_buffer *err,
-                            int count, struct list_head *head)
-{
-       struct drm_i915_gem_object *obj;
-       int i = 0;
-
-       list_for_each_entry(obj, head, mm_list) {
-               capture_bo(err++, obj);
-               if (++i == count)
-                       break;
-       }
-
-       return i;
-}
-
-static u32 capture_pinned_bo(struct drm_i915_error_buffer *err,
-                            int count, struct list_head *head)
-{
-       struct drm_i915_gem_object *obj;
-       int i = 0;
-
-       list_for_each_entry(obj, head, global_list) {
-               if (obj->pin_count == 0)
-                       continue;
-
-               capture_bo(err++, obj);
-               if (++i == count)
-                       break;
-       }
-
-       return i;
-}
-
-static void i915_gem_record_fences(struct drm_device *dev,
-                                  struct drm_i915_error_state *error)
-{
-       struct drm_i915_private *dev_priv = dev->dev_private;
-       int i;
-
-       /* Fences */
-       switch (INTEL_INFO(dev)->gen) {
-       case 7:
-       case 6:
-               for (i = 0; i < dev_priv->num_fence_regs; i++)
-                       error->fence[i] = I915_READ64(FENCE_REG_SANDYBRIDGE_0 + (i * 8));
-               break;
-       case 5:
-       case 4:
-               for (i = 0; i < 16; i++)
-                       error->fence[i] = I915_READ64(FENCE_REG_965_0 + (i * 8));
-               break;
-       case 3:
-               if (IS_I945G(dev) || IS_I945GM(dev) || IS_G33(dev))
-                       for (i = 0; i < 8; i++)
-                               error->fence[i+8] = I915_READ(FENCE_REG_945_8 + (i * 4));
-       case 2:
-               for (i = 0; i < 8; i++)
-                       error->fence[i] = I915_READ(FENCE_REG_830_0 + (i * 4));
-               break;
-
-       default:
-               BUG();
-       }
-}
-
-static struct drm_i915_error_object *
-i915_error_first_batchbuffer(struct drm_i915_private *dev_priv,
-                            struct intel_ring_buffer *ring)
-{
-       struct drm_i915_gem_object *obj;
-       u32 seqno;
-
-       if (!ring->get_seqno)
-               return NULL;
-
-       if (HAS_BROKEN_CS_TLB(dev_priv->dev)) {
-               u32 acthd = I915_READ(ACTHD);
-
-               if (WARN_ON(ring->id != RCS))
-                       return NULL;
-
-               obj = ring->private;
-               if (acthd >= i915_gem_obj_ggtt_offset(obj) &&
-                   acthd < i915_gem_obj_ggtt_offset(obj) + obj->base.size)
-                       return i915_error_object_create(dev_priv, obj);
-       }
-
-       seqno = ring->get_seqno(ring, false);
-       list_for_each_entry(obj, &dev_priv->mm.active_list, mm_list) {
-               if (obj->ring != ring)
-                       continue;
-
-               if (i915_seqno_passed(seqno, obj->last_read_seqno))
-                       continue;
-
-               if ((obj->base.read_domains & I915_GEM_DOMAIN_COMMAND) == 0)
-                       continue;
-
-               /* We need to copy these to an anonymous buffer as the simplest
-                * method to avoid being overwritten by userspace.
-                */
-               return i915_error_object_create(dev_priv, obj);
-       }
-
-       return NULL;
-}
-
-static void i915_record_ring_state(struct drm_device *dev,
-                                  struct drm_i915_error_state *error,
-                                  struct intel_ring_buffer *ring)
-{
-       struct drm_i915_private *dev_priv = dev->dev_private;
-
-       if (INTEL_INFO(dev)->gen >= 6) {
-               error->rc_psmi[ring->id] = I915_READ(ring->mmio_base + 0x50);
-               error->fault_reg[ring->id] = I915_READ(RING_FAULT_REG(ring));
-               error->semaphore_mboxes[ring->id][0]
-                       = I915_READ(RING_SYNC_0(ring->mmio_base));
-               error->semaphore_mboxes[ring->id][1]
-                       = I915_READ(RING_SYNC_1(ring->mmio_base));
-               error->semaphore_seqno[ring->id][0] = ring->sync_seqno[0];
-               error->semaphore_seqno[ring->id][1] = ring->sync_seqno[1];
-       }
-
-       if (INTEL_INFO(dev)->gen >= 4) {
-               error->faddr[ring->id] = I915_READ(RING_DMA_FADD(ring->mmio_base));
-               error->ipeir[ring->id] = I915_READ(RING_IPEIR(ring->mmio_base));
-               error->ipehr[ring->id] = I915_READ(RING_IPEHR(ring->mmio_base));
-               error->instdone[ring->id] = I915_READ(RING_INSTDONE(ring->mmio_base));
-               error->instps[ring->id] = I915_READ(RING_INSTPS(ring->mmio_base));
-               if (ring->id == RCS)
-                       error->bbaddr = I915_READ64(BB_ADDR);
-       } else {
-               error->faddr[ring->id] = I915_READ(DMA_FADD_I8XX);
-               error->ipeir[ring->id] = I915_READ(IPEIR);
-               error->ipehr[ring->id] = I915_READ(IPEHR);
-               error->instdone[ring->id] = I915_READ(INSTDONE);
-       }
-
-       error->waiting[ring->id] = waitqueue_active(&ring->irq_queue);
-       error->instpm[ring->id] = I915_READ(RING_INSTPM(ring->mmio_base));
-       error->seqno[ring->id] = ring->get_seqno(ring, false);
-       error->acthd[ring->id] = intel_ring_get_active_head(ring);
-       error->head[ring->id] = I915_READ_HEAD(ring);
-       error->tail[ring->id] = I915_READ_TAIL(ring);
-       error->ctl[ring->id] = I915_READ_CTL(ring);
-
-       error->cpu_ring_head[ring->id] = ring->head;
-       error->cpu_ring_tail[ring->id] = ring->tail;
-}
-
-
-static void i915_gem_record_active_context(struct intel_ring_buffer *ring,
-                                          struct drm_i915_error_state *error,
-                                          struct drm_i915_error_ring *ering)
-{
-       struct drm_i915_private *dev_priv = ring->dev->dev_private;
-       struct drm_i915_gem_object *obj;
-
-       /* Currently render ring is the only HW context user */
-       if (ring->id != RCS || !error->ccid)
-               return;
-
-       list_for_each_entry(obj, &dev_priv->mm.bound_list, global_list) {
-               if ((error->ccid & PAGE_MASK) == i915_gem_obj_ggtt_offset(obj)) {
-                       ering->ctx = i915_error_object_create_sized(dev_priv,
-                                                                   obj, 1);
-                       break;
-               }
-       }
-}
-
-static void i915_gem_record_rings(struct drm_device *dev,
-                                 struct drm_i915_error_state *error)
-{
-       struct drm_i915_private *dev_priv = dev->dev_private;
-       struct intel_ring_buffer *ring;
-       struct drm_i915_gem_request *request;
-       int i, count;
-
-       for_each_ring(ring, dev_priv, i) {
-               i915_record_ring_state(dev, error, ring);
-
-               error->ring[i].batchbuffer =
-                       i915_error_first_batchbuffer(dev_priv, ring);
-
-               error->ring[i].ringbuffer =
-                       i915_error_object_create(dev_priv, ring->obj);
-
-
-               i915_gem_record_active_context(ring, error, &error->ring[i]);
-
-               count = 0;
-               list_for_each_entry(request, &ring->request_list, list)
-                       count++;
-
-               error->ring[i].num_requests = count;
-               error->ring[i].requests =
-                       kmalloc(count*sizeof(struct drm_i915_error_request),
-                               GFP_ATOMIC);
-               if (error->ring[i].requests == NULL) {
-                       error->ring[i].num_requests = 0;
-                       continue;
-               }
-
-               count = 0;
-               list_for_each_entry(request, &ring->request_list, list) {
-                       struct drm_i915_error_request *erq;
-
-                       erq = &error->ring[i].requests[count++];
-                       erq->seqno = request->seqno;
-                       erq->jiffies = request->emitted_jiffies;
-                       erq->tail = request->tail;
-               }
-       }
-}
-
-static void i915_gem_capture_buffers(struct drm_i915_private *dev_priv,
-                                    struct drm_i915_error_state *error)
-{
-       struct drm_i915_gem_object *obj;
-       int i;
-
-       i = 0;
-       list_for_each_entry(obj, &dev_priv->mm.active_list, mm_list)
-               i++;
-       error->active_bo_count = i;
-       list_for_each_entry(obj, &dev_priv->mm.bound_list, global_list)
-               if (obj->pin_count)
-                       i++;
-       error->pinned_bo_count = i - error->active_bo_count;
-
-       if (i) {
-               error->active_bo = kmalloc(sizeof(*error->active_bo)*i,
-                                          GFP_ATOMIC);
-               if (error->active_bo)
-                       error->pinned_bo =
-                               error->active_bo + error->active_bo_count;
-       }
-
-       if (error->active_bo)
-               error->active_bo_count =
-                       capture_active_bo(error->active_bo,
-                                         error->active_bo_count,
-                                         &dev_priv->mm.active_list);
-
-       if (error->pinned_bo)
-               error->pinned_bo_count =
-                       capture_pinned_bo(error->pinned_bo,
-                                         error->pinned_bo_count,
-                                         &dev_priv->mm.bound_list);
-}
-
-/**
- * i915_capture_error_state - capture an error record for later analysis
- * @dev: drm device
- *
- * Should be called when an error is detected (either a hang or an error
- * interrupt) to capture error state from the time of the error.  Fills
- * out a structure which becomes available in debugfs for user level tools
- * to pick up.
- */
-static void i915_capture_error_state(struct drm_device *dev)
-{
-       struct drm_i915_private *dev_priv = dev->dev_private;
-       struct drm_i915_error_state *error;
-       unsigned long flags;
-       int pipe;
-
-       spin_lock_irqsave(&dev_priv->gpu_error.lock, flags);
-       error = dev_priv->gpu_error.first_error;
-       spin_unlock_irqrestore(&dev_priv->gpu_error.lock, flags);
-       if (error)
-               return;
-
-       /* Account for pipe specific data like PIPE*STAT */
-       error = kzalloc(sizeof(*error), GFP_ATOMIC);
-       if (!error) {
-               DRM_DEBUG_DRIVER("out of memory, not capturing error state\n");
-               return;
-       }
-
-       DRM_INFO("capturing error event; look for more information in "
-                "/sys/class/drm/card%d/error\n", dev->primary->index);
-
-       kref_init(&error->ref);
-       error->eir = I915_READ(EIR);
-       error->pgtbl_er = I915_READ(PGTBL_ER);
-       if (HAS_HW_CONTEXTS(dev))
-               error->ccid = I915_READ(CCID);
-
-       if (HAS_PCH_SPLIT(dev))
-               error->ier = I915_READ(DEIER) | I915_READ(GTIER);
-       else if (IS_VALLEYVIEW(dev))
-               error->ier = I915_READ(GTIER) | I915_READ(VLV_IER);
-       else if (IS_GEN2(dev))
-               error->ier = I915_READ16(IER);
-       else
-               error->ier = I915_READ(IER);
-
-       if (INTEL_INFO(dev)->gen >= 6)
-               error->derrmr = I915_READ(DERRMR);
-
-       if (IS_VALLEYVIEW(dev))
-               error->forcewake = I915_READ(FORCEWAKE_VLV);
-       else if (INTEL_INFO(dev)->gen >= 7)
-               error->forcewake = I915_READ(FORCEWAKE_MT);
-       else if (INTEL_INFO(dev)->gen == 6)
-               error->forcewake = I915_READ(FORCEWAKE);
-
-       if (!HAS_PCH_SPLIT(dev))
-               for_each_pipe(pipe)
-                       error->pipestat[pipe] = I915_READ(PIPESTAT(pipe));
-
-       if (INTEL_INFO(dev)->gen >= 6) {
-               error->error = I915_READ(ERROR_GEN6);
-               error->done_reg = I915_READ(DONE_REG);
-       }
-
-       if (INTEL_INFO(dev)->gen == 7)
-               error->err_int = I915_READ(GEN7_ERR_INT);
-
-       i915_get_extra_instdone(dev, error->extra_instdone);
-
-       i915_gem_capture_buffers(dev_priv, error);
-       i915_gem_record_fences(dev, error);
-       i915_gem_record_rings(dev, error);
-
-       do_gettimeofday(&error->time);
-
-       error->overlay = intel_overlay_capture_error_state(dev);
-       error->display = intel_display_capture_error_state(dev);
-
-       spin_lock_irqsave(&dev_priv->gpu_error.lock, flags);
-       if (dev_priv->gpu_error.first_error == NULL) {
-               dev_priv->gpu_error.first_error = error;
-               error = NULL;
-       }
-       spin_unlock_irqrestore(&dev_priv->gpu_error.lock, flags);
-
-       if (error)
-               i915_error_state_free(&error->ref);
-}
-
-void i915_destroy_error_state(struct drm_device *dev)
-{
-       struct drm_i915_private *dev_priv = dev->dev_private;
-       struct drm_i915_error_state *error;
-       unsigned long flags;
-
-       spin_lock_irqsave(&dev_priv->gpu_error.lock, flags);
-       error = dev_priv->gpu_error.first_error;
-       dev_priv->gpu_error.first_error = NULL;
-       spin_unlock_irqrestore(&dev_priv->gpu_error.lock, flags);
-
-       if (error)
-               kref_put(&error->ref, i915_error_state_free);
-}
-#else
-#define i915_capture_error_state(x)
-#endif
-
 static void i915_report_and_clear_eir(struct drm_device *dev)
 {
        struct drm_i915_private *dev_priv = dev->dev_private;
index bca81eecd31eee8d14a0c3fcae81faffa7a307c7..b1b1d2a38fc9ea8e3c6764e3fcf913e1bfb8eecd 100644 (file)
@@ -10176,9 +10176,6 @@ int intel_modeset_vga_set_state(struct drm_device *dev, bool state)
        return 0;
 }
 
-#ifdef CONFIG_DEBUG_FS
-#include <linux/seq_file.h>
-
 struct intel_display_error_state {
 
        u32 power_well_driver;
@@ -10322,4 +10319,3 @@ intel_display_print_error_state(struct drm_i915_error_state_buf *m,
                err_printf(m, "  BASE: %08x\n", error->cursor[i].base);
        }
 }
-#endif
index 81c3ca14fa924b8b8a40c9c8d3d1fc4bc2c7f780..2abb53e6f1e018ae77461cdb0b167b2f1bdec157 100644 (file)
@@ -1412,9 +1412,6 @@ void intel_cleanup_overlay(struct drm_device *dev)
        kfree(dev_priv->overlay);
 }
 
-#ifdef CONFIG_DEBUG_FS
-#include <linux/seq_file.h>
-
 struct intel_overlay_error_state {
        struct overlay_registers regs;
        unsigned long base;
@@ -1537,4 +1534,3 @@ intel_overlay_print_error_state(struct drm_i915_error_state_buf *m,
        P(UVSCALEV);
 #undef P
 }
-#endif