WebSVN – Kolibri OS – Diff – /drivers/video/drm/i915/i915_gpu_error.c


/*
 * 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 
 *    Keith Packard 
 *    Mika Kuoppala 
 *
 */
 
#include "i915_drv.h"
 
#if 0
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) {
		va_list tmp;
 
		va_copy(tmp, args);
		if (!__i915_error_seek(e, vsnprintf(NULL, 0, f, tmp)))
			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 const char *hangcheck_action_to_str(enum intel_ring_hangcheck_action a)
{
	switch (a) {
	case HANGCHECK_IDLE:
		return "idle";
	case HANGCHECK_WAIT:
		return "wait";
	case HANGCHECK_ACTIVE:
		return "active";
	case HANGCHECK_KICK:
		return "kick";
	case HANGCHECK_HUNG:
		return "hung";
	}
 
	return "unknown";
}
 
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 */
	if (!error->ring[ring].valid)
		return;
 
	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 (INTEL_INFO(dev)->gen >= 4) {
		err_printf(m, "  BBADDR: 0x%08llx\n", error->bbaddr[ring]);
 
		err_printf(m, "  BB_STATE: 0x%08x\n", error->bbstate[ring]);
		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]);
		if (HAS_VEBOX(dev)) {
			err_printf(m, "  SYNC_2: 0x%08x [last synced 0x%08x]\n",
				   error->semaphore_mboxes[ring][2],
				   error->semaphore_seqno[ring][2]);
		}
	}
	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]);
	err_printf(m, "  hangcheck: %s [%d]\n",
		   hangcheck_action_to_str(error->hangcheck_action[ring]),
		   error->hangcheck_score[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;
 
	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->pdev->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);
	err_printf(m, "Missed interrupts: 0x%08lx\n", dev_priv->gpu_error.missed_irq_rings);
 
	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 (i = 0; i < ARRAY_SIZE(error->ring); i++)
		i915_ring_error_state(m, dev, error, i);
 
	if (error->active_bo)
		print_error_buffers(m, "Active",
				    error->active_bo[0],
				    error->active_bo_count[0]);
 
	if (error->pinned_bo)
		print_error_buffers(m, "Pinned",
				    error->pinned_bo[0],
				    error->pinned_bo_count[0]);
 
	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;
				}
			}
		}
 
 
		if ((obj = error->ring[i].ctx)) {
			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 i915_vma *vma;
	int i = 0;
 
	list_for_each_entry(vma, head, mm_list) {
		capture_bo(err++, vma->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 8:
	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 i915_address_space *vm;
	struct i915_vma *vma;
	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->scratch.obj;
		if (obj != NULL &&
		    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(vm, &dev_priv->vm_list, global_link) {
		list_for_each_entry(vma, &vm->active_list, mm_list) {
			obj = vma->obj;
			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 (HAS_VEBOX(dev)) {
		error->semaphore_mboxes[ring->id][2] =
			I915_READ(RING_SYNC_2(ring->mmio_base));
		error->semaphore_seqno[ring->id][2] = ring->sync_seqno[2];
	}
 
	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));
		error->bbaddr[ring->id] = I915_READ(RING_BBADDR(ring->mmio_base));
		if (INTEL_INFO(dev)->gen >= 8)
			error->bbaddr[ring->id] |= (u64) I915_READ(RING_BBADDR_UDW(ring->mmio_base)) << 32;
		error->bbstate[ring->id] = I915_READ(RING_BBSTATE(ring->mmio_base));
	} 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;
 
	error->hangcheck_score[ring->id] = ring->hangcheck.score;
	error->hangcheck_action[ring->id] = ring->hangcheck.action;
}
 
 
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 drm_i915_gem_request *request;
	int i, count;
 
	for (i = 0; i < I915_NUM_RINGS; i++) {
		struct intel_ring_buffer *ring = &dev_priv->ring[i];
 
		if (ring->dev == NULL)
			continue;
 
		error->ring[i].valid = true;
 
		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 =
			kcalloc(count, sizeof(*error->ring[i].requests),
				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;
		}
	}
}
 
/* FIXME: Since pin count/bound list is global, we duplicate what we capture per
 * VM.
 */
static void i915_gem_capture_vm(struct drm_i915_private *dev_priv,
				struct drm_i915_error_state *error,
				struct i915_address_space *vm,
				const int ndx)
{
	struct drm_i915_error_buffer *active_bo = NULL, *pinned_bo = NULL;
	struct drm_i915_gem_object *obj;
	struct i915_vma *vma;
	int i;
 
	i = 0;
	list_for_each_entry(vma, &vm->active_list, mm_list)
		i++;
	error->active_bo_count[ndx] = i;
	list_for_each_entry(obj, &dev_priv->mm.bound_list, global_list)
		if (obj->pin_count)
			i++;
	error->pinned_bo_count[ndx] = i - error->active_bo_count[ndx];
 
	if (i) {
		active_bo = kcalloc(i, sizeof(*active_bo), GFP_ATOMIC);
		if (active_bo)
			pinned_bo = active_bo + error->active_bo_count[ndx];
	}
 
	if (active_bo)
		error->active_bo_count[ndx] =
			capture_active_bo(active_bo,
					  error->active_bo_count[ndx],
					  &vm->active_list);
 
	if (pinned_bo)
		error->pinned_bo_count[ndx] =
			capture_pinned_bo(pinned_bo,
					  error->pinned_bo_count[ndx],
					  &dev_priv->mm.bound_list);
	error->active_bo[ndx] = active_bo;
	error->pinned_bo[ndx] = pinned_bo;
}
 
static void i915_gem_capture_buffers(struct drm_i915_private *dev_priv,
				     struct drm_i915_error_state *error)
{
	struct i915_address_space *vm;
	int cnt = 0, i = 0;
 
	list_for_each_entry(vm, &dev_priv->vm_list, global_link)
		cnt++;
 
	if (WARN(cnt > 1, "Multiple VMs not yet supported\n"))
		cnt = 1;
 
	vm = &dev_priv->gtt.base;
 
	error->active_bo = kcalloc(cnt, sizeof(*error->active_bo), GFP_ATOMIC);
	error->pinned_bo = kcalloc(cnt, sizeof(*error->pinned_bo), GFP_ATOMIC);
	error->active_bo_count = kcalloc(cnt, sizeof(*error->active_bo_count),
					 GFP_ATOMIC);
	error->pinned_bo_count = kcalloc(cnt, sizeof(*error->pinned_bo_count),
					 GFP_ATOMIC);
 
	list_for_each_entry(vm, &dev_priv->vm_list, global_link)
		i915_gem_capture_vm(dev_priv, error, vm, i++);
}
 
/**
 * 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("GPU crash dump saved to /sys/class/drm/card%d/error\n",
		 dev->primary->index);
	DRM_INFO("GPU hangs can indicate a bug anywhere in the entire gfx stack, including userspace.\n");
	DRM_INFO("Please file a _new_ bug report on bugs.freedesktop.org against DRI -> DRM/Intel\n");
	DRM_INFO("drm/i915 developers can then reassign to the right component if it's not a kernel issue.\n");
	DRM_INFO("The gpu crash dump is required to analyze gpu hangs, so please always attach it.\n");
 
	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 or LLC";
	case I915_CACHE_L3_LLC: return " L3+LLC";
	case I915_CACHE_WT: return " WT";
	default: return "";
	}
}
#endif
 
/* 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:
	case 8:
		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;
	}
}

Rev 4126	Rev 4560
1	/*	1	/*
2	* Copyright (c) 2008 Intel Corporation	2	* Copyright (c) 2008 Intel Corporation
3	*	3	*
4	* Permission is hereby granted, free of charge, to any person obtaining a	4	* Permission is hereby granted, free of charge, to any person obtaining a
5	* copy of this software and associated documentation files (the "Software"),	5	* copy of this software and associated documentation files (the "Software"),
6	* to deal in the Software without restriction, including without limitation	6	* to deal in the Software without restriction, including without limitation
7	* the rights to use, copy, modify, merge, publish, distribute, sublicense,	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	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:	9	* Software is furnished to do so, subject to the following conditions:
10	*	10	*
11	* The above copyright notice and this permission notice (including the next	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	12	* paragraph) shall be included in all copies or substantial portions of the
13	* Software.	13	* Software.
14	*	14	*
15	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR	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,	16	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL	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	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	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	20	* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
21	* IN THE SOFTWARE.	21	* IN THE SOFTWARE.
22	*	22	*
23	* Authors:	23	* Authors:
24	* Eric Anholt	24	* Eric Anholt
25	* Keith Packard	25	* Keith Packard
26	* Mika Kuoppala	26	* Mika Kuoppala
27	*	27	*
28	*/	28	*/
29		29
30	#include "i915_drv.h"	30	#include "i915_drv.h"
31		31
32	#if 0	32	#if 0
33	static const char *yesno(int v)	33	static const char *yesno(int v)
34	{	34	{
35	return v ? "yes" : "no";	35	return v ? "yes" : "no";
36	}	36	}
37		37
38	static const char *ring_str(int ring)	38	static const char *ring_str(int ring)
39	{	39	{
40	switch (ring) {	40	switch (ring) {
41	case RCS: return "render";	41	case RCS: return "render";
42	case VCS: return "bsd";	42	case VCS: return "bsd";
43	case BCS: return "blt";	43	case BCS: return "blt";
44	case VECS: return "vebox";	44	case VECS: return "vebox";
45	default: return "";	45	default: return "";
46	}	46	}
47	}	47	}
48		48
49	static const char *pin_flag(int pinned)	49	static const char *pin_flag(int pinned)
50	{	50	{
51	if (pinned > 0)	51	if (pinned > 0)
52	return " P";	52	return " P";
53	else if (pinned < 0)	53	else if (pinned < 0)
54	return " p";	54	return " p";
55	else	55	else
56	return "";	56	return "";
57	}	57	}
58		58
59	static const char *tiling_flag(int tiling)	59	static const char *tiling_flag(int tiling)
60	{	60	{
61	switch (tiling) {	61	switch (tiling) {
62	default:	62	default:
63	case I915_TILING_NONE: return "";	63	case I915_TILING_NONE: return "";
64	case I915_TILING_X: return " X";	64	case I915_TILING_X: return " X";
65	case I915_TILING_Y: return " Y";	65	case I915_TILING_Y: return " Y";
66	}	66	}
67	}	67	}
68		68
69	static const char *dirty_flag(int dirty)	69	static const char *dirty_flag(int dirty)
70	{	70	{
71	return dirty ? " dirty" : "";	71	return dirty ? " dirty" : "";
72	}	72	}
73		73
74	static const char *purgeable_flag(int purgeable)	74	static const char *purgeable_flag(int purgeable)
75	{	75	{
76	return purgeable ? " purgeable" : "";	76	return purgeable ? " purgeable" : "";
77	}	77	}
78		78
79	static bool __i915_error_ok(struct drm_i915_error_state_buf *e)	79	static bool __i915_error_ok(struct drm_i915_error_state_buf *e)
80	{	80	{
81		81
82	if (!e->err && WARN(e->bytes > (e->size - 1), "overflow")) {	82	if (!e->err && WARN(e->bytes > (e->size - 1), "overflow")) {
83	e->err = -ENOSPC;	83	e->err = -ENOSPC;
84	return false;	84	return false;
85	}	85	}
86		86
87	if (e->bytes == e->size - 1 \|\| e->err)	87	if (e->bytes == e->size - 1 \|\| e->err)
88	return false;	88	return false;
89		89
90	return true;	90	return true;
91	}	91	}
92		92
93	static bool __i915_error_seek(struct drm_i915_error_state_buf *e,	93	static bool __i915_error_seek(struct drm_i915_error_state_buf *e,
94	unsigned len)	94	unsigned len)
95	{	95	{
96	if (e->pos + len <= e->start) {	96	if (e->pos + len <= e->start) {
97	e->pos += len;	97	e->pos += len;
98	return false;	98	return false;
99	}	99	}
100		100
101	/* First vsnprintf needs to fit in its entirety for memmove */	101	/* First vsnprintf needs to fit in its entirety for memmove */
102	if (len >= e->size) {	102	if (len >= e->size) {
103	e->err = -EIO;	103	e->err = -EIO;
104	return false;	104	return false;
105	}	105	}
106		106
107	return true;	107	return true;
108	}	108	}
109		109
110	static void __i915_error_advance(struct drm_i915_error_state_buf *e,	110	static void __i915_error_advance(struct drm_i915_error_state_buf *e,
111	unsigned len)	111	unsigned len)
112	{	112	{
113	/* If this is first printf in this window, adjust it so that	113	/* If this is first printf in this window, adjust it so that
114	* start position matches start of the buffer	114	* start position matches start of the buffer
115	*/	115	*/
116		116
117	if (e->pos < e->start) {	117	if (e->pos < e->start) {
118	const size_t off = e->start - e->pos;	118	const size_t off = e->start - e->pos;
119		119
120	/* Should not happen but be paranoid */	120	/* Should not happen but be paranoid */
121	if (off > len \|\| e->bytes) {	121	if (off > len \|\| e->bytes) {
122	e->err = -EIO;	122	e->err = -EIO;
123	return;	123	return;
124	}	124	}
125		125
126	memmove(e->buf, e->buf + off, len - off);	126	memmove(e->buf, e->buf + off, len - off);
127	e->bytes = len - off;	127	e->bytes = len - off;
128	e->pos = e->start;	128	e->pos = e->start;
129	return;	129	return;
130	}	130	}
131		131
132	e->bytes += len;	132	e->bytes += len;
133	e->pos += len;	133	e->pos += len;
134	}	134	}
135		135
136	static void i915_error_vprintf(struct drm_i915_error_state_buf *e,	136	static void i915_error_vprintf(struct drm_i915_error_state_buf *e,
137	const char *f, va_list args)	137	const char *f, va_list args)
138	{	138	{
139	unsigned len;	139	unsigned len;
140		140
141	if (!__i915_error_ok(e))	141	if (!__i915_error_ok(e))
142	return;	142	return;
143		143
144	/* Seek the first printf which is hits start position */	144	/* Seek the first printf which is hits start position */
145	if (e->pos < e->start) {	145	if (e->pos < e->start) {
146	va_list tmp;	146	va_list tmp;
147		147
148	va_copy(tmp, args);	148	va_copy(tmp, args);
149	if (!__i915_error_seek(e, vsnprintf(NULL, 0, f, tmp)))	149	if (!__i915_error_seek(e, vsnprintf(NULL, 0, f, tmp)))
150	return;	150	return;
151	}	151	}
152		152
153	len = vsnprintf(e->buf + e->bytes, e->size - e->bytes, f, args);	153	len = vsnprintf(e->buf + e->bytes, e->size - e->bytes, f, args);
154	if (len >= e->size - e->bytes)	154	if (len >= e->size - e->bytes)
155	len = e->size - e->bytes - 1;	155	len = e->size - e->bytes - 1;
156		156
157	__i915_error_advance(e, len);	157	__i915_error_advance(e, len);
158	}	158	}
159		159
160	static void i915_error_puts(struct drm_i915_error_state_buf *e,	160	static void i915_error_puts(struct drm_i915_error_state_buf *e,
161	const char *str)	161	const char *str)
162	{	162	{
163	unsigned len;	163	unsigned len;
164		164
165	if (!__i915_error_ok(e))	165	if (!__i915_error_ok(e))
166	return;	166	return;
167		167
168	len = strlen(str);	168	len = strlen(str);
169		169
170	/* Seek the first printf which is hits start position */	170	/* Seek the first printf which is hits start position */
171	if (e->pos < e->start) {	171	if (e->pos < e->start) {
172	if (!__i915_error_seek(e, len))	172	if (!__i915_error_seek(e, len))
173	return;	173	return;
174	}	174	}
175		175
176	if (len >= e->size - e->bytes)	176	if (len >= e->size - e->bytes)
177	len = e->size - e->bytes - 1;	177	len = e->size - e->bytes - 1;
178	memcpy(e->buf + e->bytes, str, len);	178	memcpy(e->buf + e->bytes, str, len);
179		179
180	__i915_error_advance(e, len);	180	__i915_error_advance(e, len);
181	}	181	}
182		182
183	#define err_printf(e, ...) i915_error_printf(e, __VA_ARGS__)	183	#define err_printf(e, ...) i915_error_printf(e, __VA_ARGS__)
184	#define err_puts(e, s) i915_error_puts(e, s)	184	#define err_puts(e, s) i915_error_puts(e, s)
185		185
186	static void print_error_buffers(struct drm_i915_error_state_buf *m,	186	static void print_error_buffers(struct drm_i915_error_state_buf *m,
187	const char *name,	187	const char *name,
188	struct drm_i915_error_buffer *err,	188	struct drm_i915_error_buffer *err,
189	int count)	189	int count)
190	{	190	{
191	err_printf(m, "%s [%d]:\n", name, count);	191	err_printf(m, "%s [%d]:\n", name, count);
192		192
193	while (count--) {	193	while (count--) {
194	err_printf(m, " %08x %8u %02x %02x %x %x",	194	err_printf(m, " %08x %8u %02x %02x %x %x",
195	err->gtt_offset,	195	err->gtt_offset,
196	err->size,	196	err->size,
197	err->read_domains,	197	err->read_domains,
198	err->write_domain,	198	err->write_domain,
199	err->rseqno, err->wseqno);	199	err->rseqno, err->wseqno);
200	err_puts(m, pin_flag(err->pinned));	200	err_puts(m, pin_flag(err->pinned));
201	err_puts(m, tiling_flag(err->tiling));	201	err_puts(m, tiling_flag(err->tiling));
202	err_puts(m, dirty_flag(err->dirty));	202	err_puts(m, dirty_flag(err->dirty));
203	err_puts(m, purgeable_flag(err->purgeable));	203	err_puts(m, purgeable_flag(err->purgeable));
204	err_puts(m, err->ring != -1 ? " " : "");	204	err_puts(m, err->ring != -1 ? " " : "");
205	err_puts(m, ring_str(err->ring));	205	err_puts(m, ring_str(err->ring));
206	err_puts(m, i915_cache_level_str(err->cache_level));	206	err_puts(m, i915_cache_level_str(err->cache_level));
207		207
208	if (err->name)	208	if (err->name)
209	err_printf(m, " (name: %d)", err->name);	209	err_printf(m, " (name: %d)", err->name);
210	if (err->fence_reg != I915_FENCE_REG_NONE)	210	if (err->fence_reg != I915_FENCE_REG_NONE)
211	err_printf(m, " (fence: %d)", err->fence_reg);	211	err_printf(m, " (fence: %d)", err->fence_reg);
212		212
213	err_puts(m, "\n");	213	err_puts(m, "\n");
214	err++;	214	err++;
215	}	215	}
216	}	216	}
-		217
-		218	static const char *hangcheck_action_to_str(enum intel_ring_hangcheck_action a)
-		219	{
-		220	switch (a) {
-		221	case HANGCHECK_IDLE:
-		222	return "idle";
-		223	case HANGCHECK_WAIT:
-		224	return "wait";
-		225	case HANGCHECK_ACTIVE:
-		226	return "active";
-		227	case HANGCHECK_KICK:
-		228	return "kick";
-		229	case HANGCHECK_HUNG:
-		230	return "hung";
-		231	}
-		232
-		233	return "unknown";
-		234	}
217		235
218	static void i915_ring_error_state(struct drm_i915_error_state_buf *m,	236	static void i915_ring_error_state(struct drm_i915_error_state_buf *m,
219	struct drm_device *dev,	237	struct drm_device *dev,
220	struct drm_i915_error_state *error,	238	struct drm_i915_error_state *error,
221	unsigned ring)	239	unsigned ring)
222	{	240	{
223	BUG_ON(ring >= I915_NUM_RINGS); /* shut up confused gcc */	241	BUG_ON(ring >= I915_NUM_RINGS); /* shut up confused gcc */
-		242	if (!error->ring[ring].valid)
-		243	return;
-		244
224	err_printf(m, "%s command stream:\n", ring_str(ring));	245	err_printf(m, "%s command stream:\n", ring_str(ring));
225	err_printf(m, " HEAD: 0x%08x\n", error->head[ring]);	246	err_printf(m, " HEAD: 0x%08x\n", error->head[ring]);
226	err_printf(m, " TAIL: 0x%08x\n", error->tail[ring]);	247	err_printf(m, " TAIL: 0x%08x\n", error->tail[ring]);
227	err_printf(m, " CTL: 0x%08x\n", error->ctl[ring]);	248	err_printf(m, " CTL: 0x%08x\n", error->ctl[ring]);
228	err_printf(m, " ACTHD: 0x%08x\n", error->acthd[ring]);	249	err_printf(m, " ACTHD: 0x%08x\n", error->acthd[ring]);
229	err_printf(m, " IPEIR: 0x%08x\n", error->ipeir[ring]);	250	err_printf(m, " IPEIR: 0x%08x\n", error->ipeir[ring]);
230	err_printf(m, " IPEHR: 0x%08x\n", error->ipehr[ring]);	251	err_printf(m, " IPEHR: 0x%08x\n", error->ipehr[ring]);
231	err_printf(m, " INSTDONE: 0x%08x\n", error->instdone[ring]);	252	err_printf(m, " INSTDONE: 0x%08x\n", error->instdone[ring]);
232	if (ring == RCS && INTEL_INFO(dev)->gen >= 4)	253	if (INTEL_INFO(dev)->gen >= 4) {
233	err_printf(m, " BBADDR: 0x%08llx\n", error->bbaddr);	254	err_printf(m, " BBADDR: 0x%08llx\n", error->bbaddr[ring]);
234		-
235	if (INTEL_INFO(dev)->gen >= 4)	255	err_printf(m, " BB_STATE: 0x%08x\n", error->bbstate[ring]);
236	err_printf(m, " INSTPS: 0x%08x\n", error->instps[ring]);	256	err_printf(m, " INSTPS: 0x%08x\n", error->instps[ring]);
-		257	}
237	err_printf(m, " INSTPM: 0x%08x\n", error->instpm[ring]);	258	err_printf(m, " INSTPM: 0x%08x\n", error->instpm[ring]);
238	err_printf(m, " FADDR: 0x%08x\n", error->faddr[ring]);	259	err_printf(m, " FADDR: 0x%08x\n", error->faddr[ring]);
239	if (INTEL_INFO(dev)->gen >= 6) {	260	if (INTEL_INFO(dev)->gen >= 6) {
240	err_printf(m, " RC PSMI: 0x%08x\n", error->rc_psmi[ring]);	261	err_printf(m, " RC PSMI: 0x%08x\n", error->rc_psmi[ring]);
241	err_printf(m, " FAULT_REG: 0x%08x\n", error->fault_reg[ring]);	262	err_printf(m, " FAULT_REG: 0x%08x\n", error->fault_reg[ring]);
242	err_printf(m, " SYNC_0: 0x%08x [last synced 0x%08x]\n",	263	err_printf(m, " SYNC_0: 0x%08x [last synced 0x%08x]\n",
243	error->semaphore_mboxes[ring][0],	264	error->semaphore_mboxes[ring][0],
244	error->semaphore_seqno[ring][0]);	265	error->semaphore_seqno[ring][0]);
245	err_printf(m, " SYNC_1: 0x%08x [last synced 0x%08x]\n",	266	err_printf(m, " SYNC_1: 0x%08x [last synced 0x%08x]\n",
246	error->semaphore_mboxes[ring][1],	267	error->semaphore_mboxes[ring][1],
247	error->semaphore_seqno[ring][1]);	268	error->semaphore_seqno[ring][1]);
248	if (HAS_VEBOX(dev)) {	269	if (HAS_VEBOX(dev)) {
249	err_printf(m, " SYNC_2: 0x%08x [last synced 0x%08x]\n",	270	err_printf(m, " SYNC_2: 0x%08x [last synced 0x%08x]\n",
250	error->semaphore_mboxes[ring][2],	271	error->semaphore_mboxes[ring][2],
251	error->semaphore_seqno[ring][2]);	272	error->semaphore_seqno[ring][2]);
252	}	273	}
253	}	274	}
254	err_printf(m, " seqno: 0x%08x\n", error->seqno[ring]);	275	err_printf(m, " seqno: 0x%08x\n", error->seqno[ring]);
255	err_printf(m, " waiting: %s\n", yesno(error->waiting[ring]));	276	err_printf(m, " waiting: %s\n", yesno(error->waiting[ring]));
256	err_printf(m, " ring->head: 0x%08x\n", error->cpu_ring_head[ring]);	277	err_printf(m, " ring->head: 0x%08x\n", error->cpu_ring_head[ring]);
257	err_printf(m, " ring->tail: 0x%08x\n", error->cpu_ring_tail[ring]);	278	err_printf(m, " ring->tail: 0x%08x\n", error->cpu_ring_tail[ring]);
-		279	err_printf(m, " hangcheck: %s [%d]\n",
-		280	hangcheck_action_to_str(error->hangcheck_action[ring]),
-		281	error->hangcheck_score[ring]);
258	}	282	}
259		283
260	void i915_error_printf(struct drm_i915_error_state_buf e, const char f, ...)	284	void i915_error_printf(struct drm_i915_error_state_buf e, const char f, ...)
261	{	285	{
262	va_list args;	286	va_list args;
263		287
264	va_start(args, f);	288	va_start(args, f);
265	i915_error_vprintf(e, f, args);	289	i915_error_vprintf(e, f, args);
266	va_end(args);	290	va_end(args);
267	}	291	}
268		292
269	int i915_error_state_to_str(struct drm_i915_error_state_buf *m,	293	int i915_error_state_to_str(struct drm_i915_error_state_buf *m,
270	const struct i915_error_state_file_priv *error_priv)	294	const struct i915_error_state_file_priv *error_priv)
271	{	295	{
272	struct drm_device *dev = error_priv->dev;	296	struct drm_device *dev = error_priv->dev;
273	drm_i915_private_t *dev_priv = dev->dev_private;	297	drm_i915_private_t *dev_priv = dev->dev_private;
274	struct drm_i915_error_state *error = error_priv->error;	298	struct drm_i915_error_state *error = error_priv->error;
275	struct intel_ring_buffer *ring;	-
276	int i, j, page, offset, elt;	299	int i, j, page, offset, elt;
277		300
278	if (!error) {	301	if (!error) {
279	err_printf(m, "no error state collected\n");	302	err_printf(m, "no error state collected\n");
280	goto out;	303	goto out;
281	}	304	}
282		305
283	err_printf(m, "Time: %ld s %ld us\n", error->time.tv_sec,	306	err_printf(m, "Time: %ld s %ld us\n", error->time.tv_sec,
284	error->time.tv_usec);	307	error->time.tv_usec);
285	err_printf(m, "Kernel: " UTS_RELEASE "\n");	308	err_printf(m, "Kernel: " UTS_RELEASE "\n");
286	err_printf(m, "PCI ID: 0x%04x\n", dev->pci_device);	309	err_printf(m, "PCI ID: 0x%04x\n", dev->pdev->device);
287	err_printf(m, "EIR: 0x%08x\n", error->eir);	310	err_printf(m, "EIR: 0x%08x\n", error->eir);
288	err_printf(m, "IER: 0x%08x\n", error->ier);	311	err_printf(m, "IER: 0x%08x\n", error->ier);
289	err_printf(m, "PGTBL_ER: 0x%08x\n", error->pgtbl_er);	312	err_printf(m, "PGTBL_ER: 0x%08x\n", error->pgtbl_er);
290	err_printf(m, "FORCEWAKE: 0x%08x\n", error->forcewake);	313	err_printf(m, "FORCEWAKE: 0x%08x\n", error->forcewake);
291	err_printf(m, "DERRMR: 0x%08x\n", error->derrmr);	314	err_printf(m, "DERRMR: 0x%08x\n", error->derrmr);
292	err_printf(m, "CCID: 0x%08x\n", error->ccid);	315	err_printf(m, "CCID: 0x%08x\n", error->ccid);
-		316	err_printf(m, "Missed interrupts: 0x%08lx\n", dev_priv->gpu_error.missed_irq_rings);
293		317
294	for (i = 0; i < dev_priv->num_fence_regs; i++)	318	for (i = 0; i < dev_priv->num_fence_regs; i++)
295	err_printf(m, " fence[%d] = %08llx\n", i, error->fence[i]);	319	err_printf(m, " fence[%d] = %08llx\n", i, error->fence[i]);
296		320
297	for (i = 0; i < ARRAY_SIZE(error->extra_instdone); i++)	321	for (i = 0; i < ARRAY_SIZE(error->extra_instdone); i++)
298	err_printf(m, " INSTDONE_%d: 0x%08x\n", i,	322	err_printf(m, " INSTDONE_%d: 0x%08x\n", i,
299	error->extra_instdone[i]);	323	error->extra_instdone[i]);
300		324
301	if (INTEL_INFO(dev)->gen >= 6) {	325	if (INTEL_INFO(dev)->gen >= 6) {
302	err_printf(m, "ERROR: 0x%08x\n", error->error);	326	err_printf(m, "ERROR: 0x%08x\n", error->error);
303	err_printf(m, "DONE_REG: 0x%08x\n", error->done_reg);	327	err_printf(m, "DONE_REG: 0x%08x\n", error->done_reg);
304	}	328	}
305		329
306	if (INTEL_INFO(dev)->gen == 7)	330	if (INTEL_INFO(dev)->gen == 7)
307	err_printf(m, "ERR_INT: 0x%08x\n", error->err_int);	331	err_printf(m, "ERR_INT: 0x%08x\n", error->err_int);
308		332
309	for_each_ring(ring, dev_priv, i)	333	for (i = 0; i < ARRAY_SIZE(error->ring); i++)
310	i915_ring_error_state(m, dev, error, i);	334	i915_ring_error_state(m, dev, error, i);
311		335
312	if (error->active_bo)	336	if (error->active_bo)
313	print_error_buffers(m, "Active",	337	print_error_buffers(m, "Active",
314	error->active_bo[0],	338	error->active_bo[0],
315	error->active_bo_count[0]);	339	error->active_bo_count[0]);
316		340
317	if (error->pinned_bo)	341	if (error->pinned_bo)
318	print_error_buffers(m, "Pinned",	342	print_error_buffers(m, "Pinned",
319	error->pinned_bo[0],	343	error->pinned_bo[0],
320	error->pinned_bo_count[0]);	344	error->pinned_bo_count[0]);
321		345
322	for (i = 0; i < ARRAY_SIZE(error->ring); i++) {	346	for (i = 0; i < ARRAY_SIZE(error->ring); i++) {
323	struct drm_i915_error_object *obj;	347	struct drm_i915_error_object *obj;
324		348
325	if ((obj = error->ring[i].batchbuffer)) {	349	if ((obj = error->ring[i].batchbuffer)) {
326	err_printf(m, "%s --- gtt_offset = 0x%08x\n",	350	err_printf(m, "%s --- gtt_offset = 0x%08x\n",
327	dev_priv->ring[i].name,	351	dev_priv->ring[i].name,
328	obj->gtt_offset);	352	obj->gtt_offset);
329	offset = 0;	353	offset = 0;
330	for (page = 0; page < obj->page_count; page++) {	354	for (page = 0; page < obj->page_count; page++) {
331	for (elt = 0; elt < PAGE_SIZE/4; elt++) {	355	for (elt = 0; elt < PAGE_SIZE/4; elt++) {
332	err_printf(m, "%08x : %08x\n", offset,	356	err_printf(m, "%08x : %08x\n", offset,
333	obj->pages[page][elt]);	357	obj->pages[page][elt]);
334	offset += 4;	358	offset += 4;
335	}	359	}
336	}	360	}
337	}	361	}
338		362
339	if (error->ring[i].num_requests) {	363	if (error->ring[i].num_requests) {
340	err_printf(m, "%s --- %d requests\n",	364	err_printf(m, "%s --- %d requests\n",
341	dev_priv->ring[i].name,	365	dev_priv->ring[i].name,
342	error->ring[i].num_requests);	366	error->ring[i].num_requests);
343	for (j = 0; j < error->ring[i].num_requests; j++) {	367	for (j = 0; j < error->ring[i].num_requests; j++) {
344	err_printf(m, " seqno 0x%08x, emitted %ld, tail 0x%08x\n",	368	err_printf(m, " seqno 0x%08x, emitted %ld, tail 0x%08x\n",
345	error->ring[i].requests[j].seqno,	369	error->ring[i].requests[j].seqno,
346	error->ring[i].requests[j].jiffies,	370	error->ring[i].requests[j].jiffies,
347	error->ring[i].requests[j].tail);	371	error->ring[i].requests[j].tail);
348	}	372	}
349	}	373	}
350		374
351	if ((obj = error->ring[i].ringbuffer)) {	375	if ((obj = error->ring[i].ringbuffer)) {
352	err_printf(m, "%s --- ringbuffer = 0x%08x\n",	376	err_printf(m, "%s --- ringbuffer = 0x%08x\n",
353	dev_priv->ring[i].name,	377	dev_priv->ring[i].name,
354	obj->gtt_offset);	378	obj->gtt_offset);
355	offset = 0;	379	offset = 0;
356	for (page = 0; page < obj->page_count; page++) {	380	for (page = 0; page < obj->page_count; page++) {
357	for (elt = 0; elt < PAGE_SIZE/4; elt++) {	381	for (elt = 0; elt < PAGE_SIZE/4; elt++) {
358	err_printf(m, "%08x : %08x\n",	382	err_printf(m, "%08x : %08x\n",
359	offset,	383	offset,
360	obj->pages[page][elt]);	384	obj->pages[page][elt]);
361	offset += 4;	385	offset += 4;
362	}	386	}
363	}	387	}
364	}	388	}
365		389
366	obj = error->ring[i].ctx;	-
367	if (obj) {	390	if ((obj = error->ring[i].ctx)) {
368	err_printf(m, "%s --- HW Context = 0x%08x\n",	391	err_printf(m, "%s --- HW Context = 0x%08x\n",
369	dev_priv->ring[i].name,	392	dev_priv->ring[i].name,
370	obj->gtt_offset);	393	obj->gtt_offset);
371	offset = 0;	394	offset = 0;
372	for (elt = 0; elt < PAGE_SIZE/16; elt += 4) {	395	for (elt = 0; elt < PAGE_SIZE/16; elt += 4) {
373	err_printf(m, "[%04x] %08x %08x %08x %08x\n",	396	err_printf(m, "[%04x] %08x %08x %08x %08x\n",
374	offset,	397	offset,
375	obj->pages[0][elt],	398	obj->pages[0][elt],
376	obj->pages[0][elt+1],	399	obj->pages[0][elt+1],
377	obj->pages[0][elt+2],	400	obj->pages[0][elt+2],
378	obj->pages[0][elt+3]);	401	obj->pages[0][elt+3]);
379	offset += 16;	402	offset += 16;
380	}	403	}
381	}	404	}
382	}	405	}
383		406
384	if (error->overlay)	407	if (error->overlay)
385	intel_overlay_print_error_state(m, error->overlay);	408	intel_overlay_print_error_state(m, error->overlay);
386		409
387	if (error->display)	410	if (error->display)
388	intel_display_print_error_state(m, dev, error->display);	411	intel_display_print_error_state(m, dev, error->display);
389		412
390	out:	413	out:
391	if (m->bytes == 0 && m->err)	414	if (m->bytes == 0 && m->err)
392	return m->err;	415	return m->err;
393		416
394	return 0;	417	return 0;
395	}	418	}
396		419
397	int i915_error_state_buf_init(struct drm_i915_error_state_buf *ebuf,	420	int i915_error_state_buf_init(struct drm_i915_error_state_buf *ebuf,
398	size_t count, loff_t pos)	421	size_t count, loff_t pos)
399	{	422	{
400	memset(ebuf, 0, sizeof(*ebuf));	423	memset(ebuf, 0, sizeof(*ebuf));
401		424
402	/* We need to have enough room to store any i915_error_state printf	425	/* We need to have enough room to store any i915_error_state printf
403	* so that we can move it to start position.	426	* so that we can move it to start position.
404	*/	427	*/
405	ebuf->size = count + 1 > PAGE_SIZE ? count + 1 : PAGE_SIZE;	428	ebuf->size = count + 1 > PAGE_SIZE ? count + 1 : PAGE_SIZE;
406	ebuf->buf = kmalloc(ebuf->size,	429	ebuf->buf = kmalloc(ebuf->size,
407	GFP_TEMPORARY \| __GFP_NORETRY \| __GFP_NOWARN);	430	GFP_TEMPORARY \| __GFP_NORETRY \| __GFP_NOWARN);
408		431
409	if (ebuf->buf == NULL) {	432	if (ebuf->buf == NULL) {
410	ebuf->size = PAGE_SIZE;	433	ebuf->size = PAGE_SIZE;
411	ebuf->buf = kmalloc(ebuf->size, GFP_TEMPORARY);	434	ebuf->buf = kmalloc(ebuf->size, GFP_TEMPORARY);
412	}	435	}
413		436
414	if (ebuf->buf == NULL) {	437	if (ebuf->buf == NULL) {
415	ebuf->size = 128;	438	ebuf->size = 128;
416	ebuf->buf = kmalloc(ebuf->size, GFP_TEMPORARY);	439	ebuf->buf = kmalloc(ebuf->size, GFP_TEMPORARY);
417	}	440	}
418		441
419	if (ebuf->buf == NULL)	442	if (ebuf->buf == NULL)
420	return -ENOMEM;	443	return -ENOMEM;
421		444
422	ebuf->start = pos;	445	ebuf->start = pos;
423		446
424	return 0;	447	return 0;
425	}	448	}
426		449
427	static void i915_error_object_free(struct drm_i915_error_object *obj)	450	static void i915_error_object_free(struct drm_i915_error_object *obj)
428	{	451	{
429	int page;	452	int page;
430		453
431	if (obj == NULL)	454	if (obj == NULL)
432	return;	455	return;
433		456
434	for (page = 0; page < obj->page_count; page++)	457	for (page = 0; page < obj->page_count; page++)
435	kfree(obj->pages[page]);	458	kfree(obj->pages[page]);
436		459
437	kfree(obj);	460	kfree(obj);
438	}	461	}
439		462
440	static void i915_error_state_free(struct kref *error_ref)	463	static void i915_error_state_free(struct kref *error_ref)
441	{	464	{
442	struct drm_i915_error_state *error = container_of(error_ref,	465	struct drm_i915_error_state *error = container_of(error_ref,
443	typeof(*error), ref);	466	typeof(*error), ref);
444	int i;	467	int i;
445		468
446	for (i = 0; i < ARRAY_SIZE(error->ring); i++) {	469	for (i = 0; i < ARRAY_SIZE(error->ring); i++) {
447	i915_error_object_free(error->ring[i].batchbuffer);	470	i915_error_object_free(error->ring[i].batchbuffer);
448	i915_error_object_free(error->ring[i].ringbuffer);	471	i915_error_object_free(error->ring[i].ringbuffer);
449	i915_error_object_free(error->ring[i].ctx);	472	i915_error_object_free(error->ring[i].ctx);
450	kfree(error->ring[i].requests);	473	kfree(error->ring[i].requests);
451	}	474	}
452		475
453	kfree(error->active_bo);	476	kfree(error->active_bo);
454	kfree(error->overlay);	477	kfree(error->overlay);
455	kfree(error->display);	478	kfree(error->display);
456	kfree(error);	479	kfree(error);
457	}	480	}
458		481
459	static struct drm_i915_error_object *	482	static struct drm_i915_error_object *
460	i915_error_object_create_sized(struct drm_i915_private *dev_priv,	483	i915_error_object_create_sized(struct drm_i915_private *dev_priv,
461	struct drm_i915_gem_object *src,	484	struct drm_i915_gem_object *src,
462	const int num_pages)	485	const int num_pages)
463	{	486	{
464	struct drm_i915_error_object *dst;	487	struct drm_i915_error_object *dst;
465	int i;	488	int i;
466	u32 reloc_offset;	489	u32 reloc_offset;
467		490
468	if (src == NULL \|\| src->pages == NULL)	491	if (src == NULL \|\| src->pages == NULL)
469	return NULL;	492	return NULL;
470		493
471	dst = kmalloc(sizeof(dst) + num_pages sizeof(u32 *), GFP_ATOMIC);	494	dst = kmalloc(sizeof(dst) + num_pages sizeof(u32 *), GFP_ATOMIC);
472	if (dst == NULL)	495	if (dst == NULL)
473	return NULL;	496	return NULL;
474		497

Subversion Repositories Kolibri OS

(root)/drivers/video/drm/i915/i915_gpu_error.c – Rev 4126 → 4560