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![Chris Wilson](/assets/img/avatar_default.png)
Now that we are confident in providing full-ppgtt where supported, remove the ability to override the context isolation. v2: Remove faked aliasing-ppgtt for testing as it no longer is accepted. v3: s/USES/HAS/ to match usage and reject attempts to load the module on old GVT-g setups that do not provide support for full-ppgtt. v4: Insulate ABI ppGTT values from our internal enum (later plans involve moving ppGTT depth out of the enum, thus potentially breaking ABI unless we document the current values). Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Cc: Matthew Auld <matthew.auld@intel.com> Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Acked-by: Zhi Wang <zhi.a.wang@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20180926201222.5643-1-chris@chris-wilson.co.uk
1880 lines
49 KiB
C
1880 lines
49 KiB
C
/*
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* Copyright (c) 2008 Intel Corporation
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* IN THE SOFTWARE.
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*
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* Authors:
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* Eric Anholt <eric@anholt.net>
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* Keith Packard <keithp@keithp.com>
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* Mika Kuoppala <mika.kuoppala@intel.com>
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*
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*/
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#include <generated/utsrelease.h>
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#include <linux/stop_machine.h>
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#include <linux/zlib.h>
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#include <drm/drm_print.h>
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#include <linux/ascii85.h>
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#include "i915_gpu_error.h"
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#include "i915_drv.h"
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static inline const struct intel_engine_cs *
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engine_lookup(const struct drm_i915_private *i915, unsigned int id)
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{
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if (id >= I915_NUM_ENGINES)
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return NULL;
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return i915->engine[id];
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}
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static inline const char *
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__engine_name(const struct intel_engine_cs *engine)
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{
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return engine ? engine->name : "";
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}
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static const char *
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engine_name(const struct drm_i915_private *i915, unsigned int id)
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{
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return __engine_name(engine_lookup(i915, id));
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}
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static const char *tiling_flag(int tiling)
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{
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switch (tiling) {
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default:
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case I915_TILING_NONE: return "";
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case I915_TILING_X: return " X";
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case I915_TILING_Y: return " Y";
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}
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}
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static const char *dirty_flag(int dirty)
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{
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return dirty ? " dirty" : "";
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}
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static const char *purgeable_flag(int purgeable)
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{
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return purgeable ? " purgeable" : "";
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}
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static bool __i915_error_ok(struct drm_i915_error_state_buf *e)
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{
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if (!e->err && WARN(e->bytes > (e->size - 1), "overflow")) {
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e->err = -ENOSPC;
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return false;
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}
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if (e->bytes == e->size - 1 || e->err)
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return false;
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return true;
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}
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static bool __i915_error_seek(struct drm_i915_error_state_buf *e,
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unsigned len)
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{
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if (e->pos + len <= e->start) {
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e->pos += len;
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return false;
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}
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/* First vsnprintf needs to fit in its entirety for memmove */
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if (len >= e->size) {
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e->err = -EIO;
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return false;
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}
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return true;
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}
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static void __i915_error_advance(struct drm_i915_error_state_buf *e,
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unsigned len)
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{
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/* If this is first printf in this window, adjust it so that
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* start position matches start of the buffer
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*/
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if (e->pos < e->start) {
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const size_t off = e->start - e->pos;
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/* Should not happen but be paranoid */
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if (off > len || e->bytes) {
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e->err = -EIO;
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return;
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}
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memmove(e->buf, e->buf + off, len - off);
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e->bytes = len - off;
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e->pos = e->start;
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return;
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}
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e->bytes += len;
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e->pos += len;
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}
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__printf(2, 0)
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static void i915_error_vprintf(struct drm_i915_error_state_buf *e,
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const char *f, va_list args)
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{
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unsigned len;
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if (!__i915_error_ok(e))
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return;
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/* Seek the first printf which is hits start position */
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if (e->pos < e->start) {
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va_list tmp;
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va_copy(tmp, args);
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len = vsnprintf(NULL, 0, f, tmp);
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va_end(tmp);
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if (!__i915_error_seek(e, len))
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return;
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}
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len = vsnprintf(e->buf + e->bytes, e->size - e->bytes, f, args);
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if (len >= e->size - e->bytes)
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len = e->size - e->bytes - 1;
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__i915_error_advance(e, len);
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}
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static void i915_error_puts(struct drm_i915_error_state_buf *e,
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const char *str)
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{
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unsigned len;
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if (!__i915_error_ok(e))
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return;
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len = strlen(str);
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/* Seek the first printf which is hits start position */
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if (e->pos < e->start) {
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if (!__i915_error_seek(e, len))
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return;
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}
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if (len >= e->size - e->bytes)
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len = e->size - e->bytes - 1;
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memcpy(e->buf + e->bytes, str, len);
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__i915_error_advance(e, len);
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}
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#define err_printf(e, ...) i915_error_printf(e, __VA_ARGS__)
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#define err_puts(e, s) i915_error_puts(e, s)
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static void __i915_printfn_error(struct drm_printer *p, struct va_format *vaf)
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{
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i915_error_vprintf(p->arg, vaf->fmt, *vaf->va);
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}
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static inline struct drm_printer
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i915_error_printer(struct drm_i915_error_state_buf *e)
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{
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struct drm_printer p = {
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.printfn = __i915_printfn_error,
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.arg = e,
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};
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return p;
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}
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#ifdef CONFIG_DRM_I915_COMPRESS_ERROR
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struct compress {
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struct z_stream_s zstream;
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void *tmp;
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};
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static bool compress_init(struct compress *c)
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{
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struct z_stream_s *zstream = memset(&c->zstream, 0, sizeof(c->zstream));
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zstream->workspace =
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kmalloc(zlib_deflate_workspacesize(MAX_WBITS, MAX_MEM_LEVEL),
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GFP_ATOMIC | __GFP_NOWARN);
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if (!zstream->workspace)
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return false;
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if (zlib_deflateInit(zstream, Z_DEFAULT_COMPRESSION) != Z_OK) {
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kfree(zstream->workspace);
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return false;
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}
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c->tmp = NULL;
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if (i915_has_memcpy_from_wc())
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c->tmp = (void *)__get_free_page(GFP_ATOMIC | __GFP_NOWARN);
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return true;
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}
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static int compress_page(struct compress *c,
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void *src,
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struct drm_i915_error_object *dst)
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{
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struct z_stream_s *zstream = &c->zstream;
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zstream->next_in = src;
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if (c->tmp && i915_memcpy_from_wc(c->tmp, src, PAGE_SIZE))
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zstream->next_in = c->tmp;
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zstream->avail_in = PAGE_SIZE;
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do {
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if (zstream->avail_out == 0) {
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unsigned long page;
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page = __get_free_page(GFP_ATOMIC | __GFP_NOWARN);
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if (!page)
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return -ENOMEM;
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dst->pages[dst->page_count++] = (void *)page;
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zstream->next_out = (void *)page;
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zstream->avail_out = PAGE_SIZE;
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}
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if (zlib_deflate(zstream, Z_SYNC_FLUSH) != Z_OK)
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return -EIO;
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} while (zstream->avail_in);
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/* Fallback to uncompressed if we increase size? */
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if (0 && zstream->total_out > zstream->total_in)
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return -E2BIG;
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return 0;
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}
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static void compress_fini(struct compress *c,
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struct drm_i915_error_object *dst)
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{
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struct z_stream_s *zstream = &c->zstream;
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if (dst) {
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zlib_deflate(zstream, Z_FINISH);
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dst->unused = zstream->avail_out;
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}
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zlib_deflateEnd(zstream);
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kfree(zstream->workspace);
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if (c->tmp)
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free_page((unsigned long)c->tmp);
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}
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static void err_compression_marker(struct drm_i915_error_state_buf *m)
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{
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err_puts(m, ":");
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}
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#else
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struct compress {
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};
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static bool compress_init(struct compress *c)
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{
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return true;
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}
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static int compress_page(struct compress *c,
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void *src,
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struct drm_i915_error_object *dst)
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{
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unsigned long page;
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void *ptr;
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page = __get_free_page(GFP_ATOMIC | __GFP_NOWARN);
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if (!page)
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return -ENOMEM;
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ptr = (void *)page;
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if (!i915_memcpy_from_wc(ptr, src, PAGE_SIZE))
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memcpy(ptr, src, PAGE_SIZE);
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dst->pages[dst->page_count++] = ptr;
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return 0;
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}
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static void compress_fini(struct compress *c,
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struct drm_i915_error_object *dst)
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{
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}
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static void err_compression_marker(struct drm_i915_error_state_buf *m)
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{
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err_puts(m, "~");
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}
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#endif
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static void print_error_buffers(struct drm_i915_error_state_buf *m,
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const char *name,
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struct drm_i915_error_buffer *err,
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int count)
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{
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err_printf(m, "%s [%d]:\n", name, count);
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while (count--) {
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err_printf(m, " %08x_%08x %8u %02x %02x %02x",
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upper_32_bits(err->gtt_offset),
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lower_32_bits(err->gtt_offset),
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err->size,
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err->read_domains,
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err->write_domain,
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err->wseqno);
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err_puts(m, tiling_flag(err->tiling));
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err_puts(m, dirty_flag(err->dirty));
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err_puts(m, purgeable_flag(err->purgeable));
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err_puts(m, err->userptr ? " userptr" : "");
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err_puts(m, err->engine != -1 ? " " : "");
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err_puts(m, engine_name(m->i915, err->engine));
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err_puts(m, i915_cache_level_str(m->i915, err->cache_level));
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if (err->name)
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err_printf(m, " (name: %d)", err->name);
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if (err->fence_reg != I915_FENCE_REG_NONE)
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err_printf(m, " (fence: %d)", err->fence_reg);
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err_puts(m, "\n");
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err++;
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}
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}
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static void error_print_instdone(struct drm_i915_error_state_buf *m,
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const struct drm_i915_error_engine *ee)
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{
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int slice;
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int subslice;
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err_printf(m, " INSTDONE: 0x%08x\n",
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ee->instdone.instdone);
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if (ee->engine_id != RCS || INTEL_GEN(m->i915) <= 3)
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return;
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err_printf(m, " SC_INSTDONE: 0x%08x\n",
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ee->instdone.slice_common);
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if (INTEL_GEN(m->i915) <= 6)
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return;
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for_each_instdone_slice_subslice(m->i915, slice, subslice)
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err_printf(m, " SAMPLER_INSTDONE[%d][%d]: 0x%08x\n",
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slice, subslice,
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ee->instdone.sampler[slice][subslice]);
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for_each_instdone_slice_subslice(m->i915, slice, subslice)
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err_printf(m, " ROW_INSTDONE[%d][%d]: 0x%08x\n",
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slice, subslice,
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ee->instdone.row[slice][subslice]);
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}
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static const char *bannable(const struct drm_i915_error_context *ctx)
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{
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return ctx->bannable ? "" : " (unbannable)";
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}
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static void error_print_request(struct drm_i915_error_state_buf *m,
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const char *prefix,
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const struct drm_i915_error_request *erq,
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const unsigned long epoch)
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{
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if (!erq->seqno)
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return;
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err_printf(m, "%s pid %d, ban score %d, seqno %8x:%08x, prio %d, emitted %dms, start %08x, head %08x, tail %08x\n",
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prefix, erq->pid, erq->ban_score,
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erq->context, erq->seqno, erq->sched_attr.priority,
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jiffies_to_msecs(erq->jiffies - epoch),
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erq->start, erq->head, erq->tail);
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}
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static void error_print_context(struct drm_i915_error_state_buf *m,
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const char *header,
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const struct drm_i915_error_context *ctx)
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{
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err_printf(m, "%s%s[%d] user_handle %d hw_id %d, prio %d, ban score %d%s guilty %d active %d\n",
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header, ctx->comm, ctx->pid, ctx->handle, ctx->hw_id,
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ctx->sched_attr.priority, ctx->ban_score, bannable(ctx),
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ctx->guilty, ctx->active);
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}
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static void error_print_engine(struct drm_i915_error_state_buf *m,
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const struct drm_i915_error_engine *ee,
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const unsigned long epoch)
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{
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int n;
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err_printf(m, "%s command stream:\n",
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engine_name(m->i915, ee->engine_id));
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err_printf(m, " IDLE?: %s\n", yesno(ee->idle));
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err_printf(m, " START: 0x%08x\n", ee->start);
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err_printf(m, " HEAD: 0x%08x [0x%08x]\n", ee->head, ee->rq_head);
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err_printf(m, " TAIL: 0x%08x [0x%08x, 0x%08x]\n",
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ee->tail, ee->rq_post, ee->rq_tail);
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err_printf(m, " CTL: 0x%08x\n", ee->ctl);
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err_printf(m, " MODE: 0x%08x\n", ee->mode);
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err_printf(m, " HWS: 0x%08x\n", ee->hws);
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err_printf(m, " ACTHD: 0x%08x %08x\n",
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(u32)(ee->acthd>>32), (u32)ee->acthd);
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err_printf(m, " IPEIR: 0x%08x\n", ee->ipeir);
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err_printf(m, " IPEHR: 0x%08x\n", ee->ipehr);
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error_print_instdone(m, ee);
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if (ee->batchbuffer) {
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u64 start = ee->batchbuffer->gtt_offset;
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u64 end = start + ee->batchbuffer->gtt_size;
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err_printf(m, " batch: [0x%08x_%08x, 0x%08x_%08x]\n",
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upper_32_bits(start), lower_32_bits(start),
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upper_32_bits(end), lower_32_bits(end));
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}
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if (INTEL_GEN(m->i915) >= 4) {
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err_printf(m, " BBADDR: 0x%08x_%08x\n",
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(u32)(ee->bbaddr>>32), (u32)ee->bbaddr);
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err_printf(m, " BB_STATE: 0x%08x\n", ee->bbstate);
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err_printf(m, " INSTPS: 0x%08x\n", ee->instps);
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}
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err_printf(m, " INSTPM: 0x%08x\n", ee->instpm);
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err_printf(m, " FADDR: 0x%08x %08x\n", upper_32_bits(ee->faddr),
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lower_32_bits(ee->faddr));
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if (INTEL_GEN(m->i915) >= 6) {
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err_printf(m, " RC PSMI: 0x%08x\n", ee->rc_psmi);
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err_printf(m, " FAULT_REG: 0x%08x\n", ee->fault_reg);
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err_printf(m, " SYNC_0: 0x%08x\n",
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ee->semaphore_mboxes[0]);
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err_printf(m, " SYNC_1: 0x%08x\n",
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ee->semaphore_mboxes[1]);
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if (HAS_VEBOX(m->i915))
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err_printf(m, " SYNC_2: 0x%08x\n",
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ee->semaphore_mboxes[2]);
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}
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if (HAS_PPGTT(m->i915)) {
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err_printf(m, " GFX_MODE: 0x%08x\n", ee->vm_info.gfx_mode);
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if (INTEL_GEN(m->i915) >= 8) {
|
|
int i;
|
|
for (i = 0; i < 4; i++)
|
|
err_printf(m, " PDP%d: 0x%016llx\n",
|
|
i, ee->vm_info.pdp[i]);
|
|
} else {
|
|
err_printf(m, " PP_DIR_BASE: 0x%08x\n",
|
|
ee->vm_info.pp_dir_base);
|
|
}
|
|
}
|
|
err_printf(m, " seqno: 0x%08x\n", ee->seqno);
|
|
err_printf(m, " last_seqno: 0x%08x\n", ee->last_seqno);
|
|
err_printf(m, " waiting: %s\n", yesno(ee->waiting));
|
|
err_printf(m, " ring->head: 0x%08x\n", ee->cpu_ring_head);
|
|
err_printf(m, " ring->tail: 0x%08x\n", ee->cpu_ring_tail);
|
|
err_printf(m, " hangcheck stall: %s\n", yesno(ee->hangcheck_stalled));
|
|
err_printf(m, " hangcheck action: %s\n",
|
|
hangcheck_action_to_str(ee->hangcheck_action));
|
|
err_printf(m, " hangcheck action timestamp: %dms (%lu%s)\n",
|
|
jiffies_to_msecs(ee->hangcheck_timestamp - epoch),
|
|
ee->hangcheck_timestamp,
|
|
ee->hangcheck_timestamp == epoch ? "; epoch" : "");
|
|
err_printf(m, " engine reset count: %u\n", ee->reset_count);
|
|
|
|
for (n = 0; n < ee->num_ports; n++) {
|
|
err_printf(m, " ELSP[%d]:", n);
|
|
error_print_request(m, " ", &ee->execlist[n], epoch);
|
|
}
|
|
|
|
error_print_context(m, " Active context: ", &ee->context);
|
|
}
|
|
|
|
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);
|
|
}
|
|
|
|
static void print_error_obj(struct drm_i915_error_state_buf *m,
|
|
struct intel_engine_cs *engine,
|
|
const char *name,
|
|
struct drm_i915_error_object *obj)
|
|
{
|
|
char out[ASCII85_BUFSZ];
|
|
int page;
|
|
|
|
if (!obj)
|
|
return;
|
|
|
|
if (name) {
|
|
err_printf(m, "%s --- %s = 0x%08x %08x\n",
|
|
engine ? engine->name : "global", name,
|
|
upper_32_bits(obj->gtt_offset),
|
|
lower_32_bits(obj->gtt_offset));
|
|
}
|
|
|
|
err_compression_marker(m);
|
|
for (page = 0; page < obj->page_count; page++) {
|
|
int i, len;
|
|
|
|
len = PAGE_SIZE;
|
|
if (page == obj->page_count - 1)
|
|
len -= obj->unused;
|
|
len = ascii85_encode_len(len);
|
|
|
|
for (i = 0; i < len; i++)
|
|
err_puts(m, ascii85_encode(obj->pages[page][i], out));
|
|
}
|
|
err_puts(m, "\n");
|
|
}
|
|
|
|
static void err_print_capabilities(struct drm_i915_error_state_buf *m,
|
|
const struct intel_device_info *info,
|
|
const struct intel_driver_caps *caps)
|
|
{
|
|
struct drm_printer p = i915_error_printer(m);
|
|
|
|
intel_device_info_dump_flags(info, &p);
|
|
intel_driver_caps_print(caps, &p);
|
|
intel_device_info_dump_topology(&info->sseu, &p);
|
|
}
|
|
|
|
static void err_print_params(struct drm_i915_error_state_buf *m,
|
|
const struct i915_params *params)
|
|
{
|
|
struct drm_printer p = i915_error_printer(m);
|
|
|
|
i915_params_dump(params, &p);
|
|
}
|
|
|
|
static void err_print_pciid(struct drm_i915_error_state_buf *m,
|
|
struct drm_i915_private *i915)
|
|
{
|
|
struct pci_dev *pdev = i915->drm.pdev;
|
|
|
|
err_printf(m, "PCI ID: 0x%04x\n", pdev->device);
|
|
err_printf(m, "PCI Revision: 0x%02x\n", pdev->revision);
|
|
err_printf(m, "PCI Subsystem: %04x:%04x\n",
|
|
pdev->subsystem_vendor,
|
|
pdev->subsystem_device);
|
|
}
|
|
|
|
static void err_print_uc(struct drm_i915_error_state_buf *m,
|
|
const struct i915_error_uc *error_uc)
|
|
{
|
|
struct drm_printer p = i915_error_printer(m);
|
|
const struct i915_gpu_state *error =
|
|
container_of(error_uc, typeof(*error), uc);
|
|
|
|
if (!error->device_info.has_guc)
|
|
return;
|
|
|
|
intel_uc_fw_dump(&error_uc->guc_fw, &p);
|
|
intel_uc_fw_dump(&error_uc->huc_fw, &p);
|
|
print_error_obj(m, NULL, "GuC log buffer", error_uc->guc_log);
|
|
}
|
|
|
|
int i915_error_state_to_str(struct drm_i915_error_state_buf *m,
|
|
const struct i915_gpu_state *error)
|
|
{
|
|
struct drm_i915_private *dev_priv = m->i915;
|
|
struct drm_i915_error_object *obj;
|
|
struct timespec64 ts;
|
|
int i, j;
|
|
|
|
if (!error) {
|
|
err_printf(m, "No error state collected\n");
|
|
return 0;
|
|
}
|
|
|
|
if (*error->error_msg)
|
|
err_printf(m, "%s\n", error->error_msg);
|
|
err_printf(m, "Kernel: " UTS_RELEASE "\n");
|
|
ts = ktime_to_timespec64(error->time);
|
|
err_printf(m, "Time: %lld s %ld us\n",
|
|
(s64)ts.tv_sec, ts.tv_nsec / NSEC_PER_USEC);
|
|
ts = ktime_to_timespec64(error->boottime);
|
|
err_printf(m, "Boottime: %lld s %ld us\n",
|
|
(s64)ts.tv_sec, ts.tv_nsec / NSEC_PER_USEC);
|
|
ts = ktime_to_timespec64(error->uptime);
|
|
err_printf(m, "Uptime: %lld s %ld us\n",
|
|
(s64)ts.tv_sec, ts.tv_nsec / NSEC_PER_USEC);
|
|
err_printf(m, "Epoch: %lu jiffies (%u HZ)\n", error->epoch, HZ);
|
|
err_printf(m, "Capture: %lu jiffies; %d ms ago, %d ms after epoch\n",
|
|
error->capture,
|
|
jiffies_to_msecs(jiffies - error->capture),
|
|
jiffies_to_msecs(error->capture - error->epoch));
|
|
|
|
for (i = 0; i < ARRAY_SIZE(error->engine); i++) {
|
|
if (error->engine[i].hangcheck_stalled &&
|
|
error->engine[i].context.pid) {
|
|
err_printf(m, "Active process (on ring %s): %s [%d], score %d%s\n",
|
|
engine_name(m->i915, i),
|
|
error->engine[i].context.comm,
|
|
error->engine[i].context.pid,
|
|
error->engine[i].context.ban_score,
|
|
bannable(&error->engine[i].context));
|
|
}
|
|
}
|
|
err_printf(m, "Reset count: %u\n", error->reset_count);
|
|
err_printf(m, "Suspend count: %u\n", error->suspend_count);
|
|
err_printf(m, "Platform: %s\n", intel_platform_name(error->device_info.platform));
|
|
err_print_pciid(m, error->i915);
|
|
|
|
err_printf(m, "IOMMU enabled?: %d\n", error->iommu);
|
|
|
|
if (HAS_CSR(dev_priv)) {
|
|
struct intel_csr *csr = &dev_priv->csr;
|
|
|
|
err_printf(m, "DMC loaded: %s\n",
|
|
yesno(csr->dmc_payload != NULL));
|
|
err_printf(m, "DMC fw version: %d.%d\n",
|
|
CSR_VERSION_MAJOR(csr->version),
|
|
CSR_VERSION_MINOR(csr->version));
|
|
}
|
|
|
|
err_printf(m, "GT awake: %s\n", yesno(error->awake));
|
|
err_printf(m, "RPM wakelock: %s\n", yesno(error->wakelock));
|
|
err_printf(m, "PM suspended: %s\n", yesno(error->suspended));
|
|
err_printf(m, "EIR: 0x%08x\n", error->eir);
|
|
err_printf(m, "IER: 0x%08x\n", error->ier);
|
|
for (i = 0; i < error->ngtier; i++)
|
|
err_printf(m, "GTIER[%d]: 0x%08x\n", i, error->gtier[i]);
|
|
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 < error->nfence; i++)
|
|
err_printf(m, " fence[%d] = %08llx\n", i, error->fence[i]);
|
|
|
|
if (INTEL_GEN(dev_priv) >= 6) {
|
|
err_printf(m, "ERROR: 0x%08x\n", error->error);
|
|
|
|
if (INTEL_GEN(dev_priv) >= 8)
|
|
err_printf(m, "FAULT_TLB_DATA: 0x%08x 0x%08x\n",
|
|
error->fault_data1, error->fault_data0);
|
|
|
|
err_printf(m, "DONE_REG: 0x%08x\n", error->done_reg);
|
|
}
|
|
|
|
if (IS_GEN7(dev_priv))
|
|
err_printf(m, "ERR_INT: 0x%08x\n", error->err_int);
|
|
|
|
for (i = 0; i < ARRAY_SIZE(error->engine); i++) {
|
|
if (error->engine[i].engine_id != -1)
|
|
error_print_engine(m, &error->engine[i], error->epoch);
|
|
}
|
|
|
|
for (i = 0; i < ARRAY_SIZE(error->active_vm); i++) {
|
|
char buf[128];
|
|
int len, first = 1;
|
|
|
|
if (!error->active_vm[i])
|
|
break;
|
|
|
|
len = scnprintf(buf, sizeof(buf), "Active (");
|
|
for (j = 0; j < ARRAY_SIZE(error->engine); j++) {
|
|
if (error->engine[j].vm != error->active_vm[i])
|
|
continue;
|
|
|
|
len += scnprintf(buf + len, sizeof(buf), "%s%s",
|
|
first ? "" : ", ",
|
|
dev_priv->engine[j]->name);
|
|
first = 0;
|
|
}
|
|
scnprintf(buf + len, sizeof(buf), ")");
|
|
print_error_buffers(m, buf,
|
|
error->active_bo[i],
|
|
error->active_bo_count[i]);
|
|
}
|
|
|
|
print_error_buffers(m, "Pinned (global)",
|
|
error->pinned_bo,
|
|
error->pinned_bo_count);
|
|
|
|
for (i = 0; i < ARRAY_SIZE(error->engine); i++) {
|
|
const struct drm_i915_error_engine *ee = &error->engine[i];
|
|
|
|
obj = ee->batchbuffer;
|
|
if (obj) {
|
|
err_puts(m, dev_priv->engine[i]->name);
|
|
if (ee->context.pid)
|
|
err_printf(m, " (submitted by %s [%d], ctx %d [%d], score %d%s)",
|
|
ee->context.comm,
|
|
ee->context.pid,
|
|
ee->context.handle,
|
|
ee->context.hw_id,
|
|
ee->context.ban_score,
|
|
bannable(&ee->context));
|
|
err_printf(m, " --- gtt_offset = 0x%08x %08x\n",
|
|
upper_32_bits(obj->gtt_offset),
|
|
lower_32_bits(obj->gtt_offset));
|
|
print_error_obj(m, dev_priv->engine[i], NULL, obj);
|
|
}
|
|
|
|
for (j = 0; j < ee->user_bo_count; j++)
|
|
print_error_obj(m, dev_priv->engine[i],
|
|
"user", ee->user_bo[j]);
|
|
|
|
if (ee->num_requests) {
|
|
err_printf(m, "%s --- %d requests\n",
|
|
dev_priv->engine[i]->name,
|
|
ee->num_requests);
|
|
for (j = 0; j < ee->num_requests; j++)
|
|
error_print_request(m, " ",
|
|
&ee->requests[j],
|
|
error->epoch);
|
|
}
|
|
|
|
if (IS_ERR(ee->waiters)) {
|
|
err_printf(m, "%s --- ? waiters [unable to acquire spinlock]\n",
|
|
dev_priv->engine[i]->name);
|
|
} else if (ee->num_waiters) {
|
|
err_printf(m, "%s --- %d waiters\n",
|
|
dev_priv->engine[i]->name,
|
|
ee->num_waiters);
|
|
for (j = 0; j < ee->num_waiters; j++) {
|
|
err_printf(m, " seqno 0x%08x for %s [%d]\n",
|
|
ee->waiters[j].seqno,
|
|
ee->waiters[j].comm,
|
|
ee->waiters[j].pid);
|
|
}
|
|
}
|
|
|
|
print_error_obj(m, dev_priv->engine[i],
|
|
"ringbuffer", ee->ringbuffer);
|
|
|
|
print_error_obj(m, dev_priv->engine[i],
|
|
"HW Status", ee->hws_page);
|
|
|
|
print_error_obj(m, dev_priv->engine[i],
|
|
"HW context", ee->ctx);
|
|
|
|
print_error_obj(m, dev_priv->engine[i],
|
|
"WA context", ee->wa_ctx);
|
|
|
|
print_error_obj(m, dev_priv->engine[i],
|
|
"WA batchbuffer", ee->wa_batchbuffer);
|
|
|
|
print_error_obj(m, dev_priv->engine[i],
|
|
"NULL context", ee->default_state);
|
|
}
|
|
|
|
if (error->overlay)
|
|
intel_overlay_print_error_state(m, error->overlay);
|
|
|
|
if (error->display)
|
|
intel_display_print_error_state(m, error->display);
|
|
|
|
err_print_capabilities(m, &error->device_info, &error->driver_caps);
|
|
err_print_params(m, &error->params);
|
|
err_print_uc(m, &error->uc);
|
|
|
|
if (m->bytes == 0 && m->err)
|
|
return m->err;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int i915_error_state_buf_init(struct drm_i915_error_state_buf *ebuf,
|
|
struct drm_i915_private *i915,
|
|
size_t count, loff_t pos)
|
|
{
|
|
memset(ebuf, 0, sizeof(*ebuf));
|
|
ebuf->i915 = i915;
|
|
|
|
/* 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_KERNEL | __GFP_NORETRY | __GFP_NOWARN);
|
|
|
|
if (ebuf->buf == NULL) {
|
|
ebuf->size = PAGE_SIZE;
|
|
ebuf->buf = kmalloc(ebuf->size, GFP_KERNEL);
|
|
}
|
|
|
|
if (ebuf->buf == NULL) {
|
|
ebuf->size = 128;
|
|
ebuf->buf = kmalloc(ebuf->size, GFP_KERNEL);
|
|
}
|
|
|
|
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++)
|
|
free_page((unsigned long)obj->pages[page]);
|
|
|
|
kfree(obj);
|
|
}
|
|
|
|
static __always_inline void free_param(const char *type, void *x)
|
|
{
|
|
if (!__builtin_strcmp(type, "char *"))
|
|
kfree(*(void **)x);
|
|
}
|
|
|
|
static void cleanup_params(struct i915_gpu_state *error)
|
|
{
|
|
#define FREE(T, x, ...) free_param(#T, &error->params.x);
|
|
I915_PARAMS_FOR_EACH(FREE);
|
|
#undef FREE
|
|
}
|
|
|
|
static void cleanup_uc_state(struct i915_gpu_state *error)
|
|
{
|
|
struct i915_error_uc *error_uc = &error->uc;
|
|
|
|
kfree(error_uc->guc_fw.path);
|
|
kfree(error_uc->huc_fw.path);
|
|
i915_error_object_free(error_uc->guc_log);
|
|
}
|
|
|
|
void __i915_gpu_state_free(struct kref *error_ref)
|
|
{
|
|
struct i915_gpu_state *error =
|
|
container_of(error_ref, typeof(*error), ref);
|
|
long i, j;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(error->engine); i++) {
|
|
struct drm_i915_error_engine *ee = &error->engine[i];
|
|
|
|
for (j = 0; j < ee->user_bo_count; j++)
|
|
i915_error_object_free(ee->user_bo[j]);
|
|
kfree(ee->user_bo);
|
|
|
|
i915_error_object_free(ee->batchbuffer);
|
|
i915_error_object_free(ee->wa_batchbuffer);
|
|
i915_error_object_free(ee->ringbuffer);
|
|
i915_error_object_free(ee->hws_page);
|
|
i915_error_object_free(ee->ctx);
|
|
i915_error_object_free(ee->wa_ctx);
|
|
|
|
kfree(ee->requests);
|
|
if (!IS_ERR_OR_NULL(ee->waiters))
|
|
kfree(ee->waiters);
|
|
}
|
|
|
|
for (i = 0; i < ARRAY_SIZE(error->active_bo); i++)
|
|
kfree(error->active_bo[i]);
|
|
kfree(error->pinned_bo);
|
|
|
|
kfree(error->overlay);
|
|
kfree(error->display);
|
|
|
|
cleanup_params(error);
|
|
cleanup_uc_state(error);
|
|
|
|
kfree(error);
|
|
}
|
|
|
|
static struct drm_i915_error_object *
|
|
i915_error_object_create(struct drm_i915_private *i915,
|
|
struct i915_vma *vma)
|
|
{
|
|
struct i915_ggtt *ggtt = &i915->ggtt;
|
|
const u64 slot = ggtt->error_capture.start;
|
|
struct drm_i915_error_object *dst;
|
|
struct compress compress;
|
|
unsigned long num_pages;
|
|
struct sgt_iter iter;
|
|
dma_addr_t dma;
|
|
|
|
if (!vma)
|
|
return NULL;
|
|
|
|
num_pages = min_t(u64, vma->size, vma->obj->base.size) >> PAGE_SHIFT;
|
|
num_pages = DIV_ROUND_UP(10 * num_pages, 8); /* worstcase zlib growth */
|
|
dst = kmalloc(sizeof(*dst) + num_pages * sizeof(u32 *),
|
|
GFP_ATOMIC | __GFP_NOWARN);
|
|
if (!dst)
|
|
return NULL;
|
|
|
|
dst->gtt_offset = vma->node.start;
|
|
dst->gtt_size = vma->node.size;
|
|
dst->page_count = 0;
|
|
dst->unused = 0;
|
|
|
|
if (!compress_init(&compress)) {
|
|
kfree(dst);
|
|
return NULL;
|
|
}
|
|
|
|
for_each_sgt_dma(dma, iter, vma->pages) {
|
|
void __iomem *s;
|
|
int ret;
|
|
|
|
ggtt->vm.insert_page(&ggtt->vm, dma, slot, I915_CACHE_NONE, 0);
|
|
|
|
s = io_mapping_map_atomic_wc(&ggtt->iomap, slot);
|
|
ret = compress_page(&compress, (void __force *)s, dst);
|
|
io_mapping_unmap_atomic(s);
|
|
|
|
if (ret)
|
|
goto unwind;
|
|
}
|
|
goto out;
|
|
|
|
unwind:
|
|
while (dst->page_count--)
|
|
free_page((unsigned long)dst->pages[dst->page_count]);
|
|
kfree(dst);
|
|
dst = NULL;
|
|
|
|
out:
|
|
compress_fini(&compress, dst);
|
|
ggtt->vm.clear_range(&ggtt->vm, slot, PAGE_SIZE);
|
|
return dst;
|
|
}
|
|
|
|
/* The error capture is special as tries to run underneath the normal
|
|
* locking rules - so we use the raw version of the i915_gem_active lookup.
|
|
*/
|
|
static inline uint32_t
|
|
__active_get_seqno(struct i915_gem_active *active)
|
|
{
|
|
struct i915_request *request;
|
|
|
|
request = __i915_gem_active_peek(active);
|
|
return request ? request->global_seqno : 0;
|
|
}
|
|
|
|
static inline int
|
|
__active_get_engine_id(struct i915_gem_active *active)
|
|
{
|
|
struct i915_request *request;
|
|
|
|
request = __i915_gem_active_peek(active);
|
|
return request ? request->engine->id : -1;
|
|
}
|
|
|
|
static void capture_bo(struct drm_i915_error_buffer *err,
|
|
struct i915_vma *vma)
|
|
{
|
|
struct drm_i915_gem_object *obj = vma->obj;
|
|
|
|
err->size = obj->base.size;
|
|
err->name = obj->base.name;
|
|
|
|
err->wseqno = __active_get_seqno(&obj->frontbuffer_write);
|
|
err->engine = __active_get_engine_id(&obj->frontbuffer_write);
|
|
|
|
err->gtt_offset = vma->node.start;
|
|
err->read_domains = obj->read_domains;
|
|
err->write_domain = obj->write_domain;
|
|
err->fence_reg = vma->fence ? vma->fence->id : -1;
|
|
err->tiling = i915_gem_object_get_tiling(obj);
|
|
err->dirty = obj->mm.dirty;
|
|
err->purgeable = obj->mm.madv != I915_MADV_WILLNEED;
|
|
err->userptr = obj->userptr.mm != NULL;
|
|
err->cache_level = obj->cache_level;
|
|
}
|
|
|
|
static u32 capture_error_bo(struct drm_i915_error_buffer *err,
|
|
int count, struct list_head *head,
|
|
bool pinned_only)
|
|
{
|
|
struct i915_vma *vma;
|
|
int i = 0;
|
|
|
|
list_for_each_entry(vma, head, vm_link) {
|
|
if (!vma->obj)
|
|
continue;
|
|
|
|
if (pinned_only && !i915_vma_is_pinned(vma))
|
|
continue;
|
|
|
|
capture_bo(err++, vma);
|
|
if (++i == count)
|
|
break;
|
|
}
|
|
|
|
return i;
|
|
}
|
|
|
|
/* Generate a semi-unique error code. The code is not meant to have meaning, The
|
|
* code's only purpose is to try to prevent false duplicated bug reports by
|
|
* grossly estimating a GPU error state.
|
|
*
|
|
* TODO Ideally, hashing the batchbuffer would be a very nice way to determine
|
|
* the hang if we could strip the GTT offset information from it.
|
|
*
|
|
* It's only a small step better than a random number in its current form.
|
|
*/
|
|
static uint32_t i915_error_generate_code(struct drm_i915_private *dev_priv,
|
|
struct i915_gpu_state *error,
|
|
int *engine_id)
|
|
{
|
|
uint32_t error_code = 0;
|
|
int i;
|
|
|
|
/* IPEHR would be an ideal way to detect errors, as it's the gross
|
|
* measure of "the command that hung." However, has some very common
|
|
* synchronization commands which almost always appear in the case
|
|
* strictly a client bug. Use instdone to differentiate those some.
|
|
*/
|
|
for (i = 0; i < I915_NUM_ENGINES; i++) {
|
|
if (error->engine[i].hangcheck_stalled) {
|
|
if (engine_id)
|
|
*engine_id = i;
|
|
|
|
return error->engine[i].ipehr ^
|
|
error->engine[i].instdone.instdone;
|
|
}
|
|
}
|
|
|
|
return error_code;
|
|
}
|
|
|
|
static void gem_record_fences(struct i915_gpu_state *error)
|
|
{
|
|
struct drm_i915_private *dev_priv = error->i915;
|
|
int i;
|
|
|
|
if (INTEL_GEN(dev_priv) >= 6) {
|
|
for (i = 0; i < dev_priv->num_fence_regs; i++)
|
|
error->fence[i] = I915_READ64(FENCE_REG_GEN6_LO(i));
|
|
} else if (INTEL_GEN(dev_priv) >= 4) {
|
|
for (i = 0; i < dev_priv->num_fence_regs; i++)
|
|
error->fence[i] = I915_READ64(FENCE_REG_965_LO(i));
|
|
} else {
|
|
for (i = 0; i < dev_priv->num_fence_regs; i++)
|
|
error->fence[i] = I915_READ(FENCE_REG(i));
|
|
}
|
|
error->nfence = i;
|
|
}
|
|
|
|
static void gen6_record_semaphore_state(struct intel_engine_cs *engine,
|
|
struct drm_i915_error_engine *ee)
|
|
{
|
|
struct drm_i915_private *dev_priv = engine->i915;
|
|
|
|
ee->semaphore_mboxes[0] = I915_READ(RING_SYNC_0(engine->mmio_base));
|
|
ee->semaphore_mboxes[1] = I915_READ(RING_SYNC_1(engine->mmio_base));
|
|
if (HAS_VEBOX(dev_priv))
|
|
ee->semaphore_mboxes[2] =
|
|
I915_READ(RING_SYNC_2(engine->mmio_base));
|
|
}
|
|
|
|
static void error_record_engine_waiters(struct intel_engine_cs *engine,
|
|
struct drm_i915_error_engine *ee)
|
|
{
|
|
struct intel_breadcrumbs *b = &engine->breadcrumbs;
|
|
struct drm_i915_error_waiter *waiter;
|
|
struct rb_node *rb;
|
|
int count;
|
|
|
|
ee->num_waiters = 0;
|
|
ee->waiters = NULL;
|
|
|
|
if (RB_EMPTY_ROOT(&b->waiters))
|
|
return;
|
|
|
|
if (!spin_trylock_irq(&b->rb_lock)) {
|
|
ee->waiters = ERR_PTR(-EDEADLK);
|
|
return;
|
|
}
|
|
|
|
count = 0;
|
|
for (rb = rb_first(&b->waiters); rb != NULL; rb = rb_next(rb))
|
|
count++;
|
|
spin_unlock_irq(&b->rb_lock);
|
|
|
|
waiter = NULL;
|
|
if (count)
|
|
waiter = kmalloc_array(count,
|
|
sizeof(struct drm_i915_error_waiter),
|
|
GFP_ATOMIC);
|
|
if (!waiter)
|
|
return;
|
|
|
|
if (!spin_trylock_irq(&b->rb_lock)) {
|
|
kfree(waiter);
|
|
ee->waiters = ERR_PTR(-EDEADLK);
|
|
return;
|
|
}
|
|
|
|
ee->waiters = waiter;
|
|
for (rb = rb_first(&b->waiters); rb; rb = rb_next(rb)) {
|
|
struct intel_wait *w = rb_entry(rb, typeof(*w), node);
|
|
|
|
strcpy(waiter->comm, w->tsk->comm);
|
|
waiter->pid = w->tsk->pid;
|
|
waiter->seqno = w->seqno;
|
|
waiter++;
|
|
|
|
if (++ee->num_waiters == count)
|
|
break;
|
|
}
|
|
spin_unlock_irq(&b->rb_lock);
|
|
}
|
|
|
|
static void error_record_engine_registers(struct i915_gpu_state *error,
|
|
struct intel_engine_cs *engine,
|
|
struct drm_i915_error_engine *ee)
|
|
{
|
|
struct drm_i915_private *dev_priv = engine->i915;
|
|
|
|
if (INTEL_GEN(dev_priv) >= 6) {
|
|
ee->rc_psmi = I915_READ(RING_PSMI_CTL(engine->mmio_base));
|
|
if (INTEL_GEN(dev_priv) >= 8) {
|
|
ee->fault_reg = I915_READ(GEN8_RING_FAULT_REG);
|
|
} else {
|
|
gen6_record_semaphore_state(engine, ee);
|
|
ee->fault_reg = I915_READ(RING_FAULT_REG(engine));
|
|
}
|
|
}
|
|
|
|
if (INTEL_GEN(dev_priv) >= 4) {
|
|
ee->faddr = I915_READ(RING_DMA_FADD(engine->mmio_base));
|
|
ee->ipeir = I915_READ(RING_IPEIR(engine->mmio_base));
|
|
ee->ipehr = I915_READ(RING_IPEHR(engine->mmio_base));
|
|
ee->instps = I915_READ(RING_INSTPS(engine->mmio_base));
|
|
ee->bbaddr = I915_READ(RING_BBADDR(engine->mmio_base));
|
|
if (INTEL_GEN(dev_priv) >= 8) {
|
|
ee->faddr |= (u64) I915_READ(RING_DMA_FADD_UDW(engine->mmio_base)) << 32;
|
|
ee->bbaddr |= (u64) I915_READ(RING_BBADDR_UDW(engine->mmio_base)) << 32;
|
|
}
|
|
ee->bbstate = I915_READ(RING_BBSTATE(engine->mmio_base));
|
|
} else {
|
|
ee->faddr = I915_READ(DMA_FADD_I8XX);
|
|
ee->ipeir = I915_READ(IPEIR);
|
|
ee->ipehr = I915_READ(IPEHR);
|
|
}
|
|
|
|
intel_engine_get_instdone(engine, &ee->instdone);
|
|
|
|
ee->waiting = intel_engine_has_waiter(engine);
|
|
ee->instpm = I915_READ(RING_INSTPM(engine->mmio_base));
|
|
ee->acthd = intel_engine_get_active_head(engine);
|
|
ee->seqno = intel_engine_get_seqno(engine);
|
|
ee->last_seqno = intel_engine_last_submit(engine);
|
|
ee->start = I915_READ_START(engine);
|
|
ee->head = I915_READ_HEAD(engine);
|
|
ee->tail = I915_READ_TAIL(engine);
|
|
ee->ctl = I915_READ_CTL(engine);
|
|
if (INTEL_GEN(dev_priv) > 2)
|
|
ee->mode = I915_READ_MODE(engine);
|
|
|
|
if (!HWS_NEEDS_PHYSICAL(dev_priv)) {
|
|
i915_reg_t mmio;
|
|
|
|
if (IS_GEN7(dev_priv)) {
|
|
switch (engine->id) {
|
|
default:
|
|
case RCS:
|
|
mmio = RENDER_HWS_PGA_GEN7;
|
|
break;
|
|
case BCS:
|
|
mmio = BLT_HWS_PGA_GEN7;
|
|
break;
|
|
case VCS:
|
|
mmio = BSD_HWS_PGA_GEN7;
|
|
break;
|
|
case VECS:
|
|
mmio = VEBOX_HWS_PGA_GEN7;
|
|
break;
|
|
}
|
|
} else if (IS_GEN6(engine->i915)) {
|
|
mmio = RING_HWS_PGA_GEN6(engine->mmio_base);
|
|
} else {
|
|
/* XXX: gen8 returns to sanity */
|
|
mmio = RING_HWS_PGA(engine->mmio_base);
|
|
}
|
|
|
|
ee->hws = I915_READ(mmio);
|
|
}
|
|
|
|
ee->idle = intel_engine_is_idle(engine);
|
|
ee->hangcheck_timestamp = engine->hangcheck.action_timestamp;
|
|
ee->hangcheck_action = engine->hangcheck.action;
|
|
ee->hangcheck_stalled = engine->hangcheck.stalled;
|
|
ee->reset_count = i915_reset_engine_count(&dev_priv->gpu_error,
|
|
engine);
|
|
|
|
if (HAS_PPGTT(dev_priv)) {
|
|
int i;
|
|
|
|
ee->vm_info.gfx_mode = I915_READ(RING_MODE_GEN7(engine));
|
|
|
|
if (IS_GEN6(dev_priv))
|
|
ee->vm_info.pp_dir_base =
|
|
I915_READ(RING_PP_DIR_BASE_READ(engine));
|
|
else if (IS_GEN7(dev_priv))
|
|
ee->vm_info.pp_dir_base =
|
|
I915_READ(RING_PP_DIR_BASE(engine));
|
|
else if (INTEL_GEN(dev_priv) >= 8)
|
|
for (i = 0; i < 4; i++) {
|
|
ee->vm_info.pdp[i] =
|
|
I915_READ(GEN8_RING_PDP_UDW(engine, i));
|
|
ee->vm_info.pdp[i] <<= 32;
|
|
ee->vm_info.pdp[i] |=
|
|
I915_READ(GEN8_RING_PDP_LDW(engine, i));
|
|
}
|
|
}
|
|
}
|
|
|
|
static void record_request(struct i915_request *request,
|
|
struct drm_i915_error_request *erq)
|
|
{
|
|
struct i915_gem_context *ctx = request->gem_context;
|
|
|
|
erq->context = ctx->hw_id;
|
|
erq->sched_attr = request->sched.attr;
|
|
erq->ban_score = atomic_read(&ctx->ban_score);
|
|
erq->seqno = request->global_seqno;
|
|
erq->jiffies = request->emitted_jiffies;
|
|
erq->start = i915_ggtt_offset(request->ring->vma);
|
|
erq->head = request->head;
|
|
erq->tail = request->tail;
|
|
|
|
rcu_read_lock();
|
|
erq->pid = ctx->pid ? pid_nr(ctx->pid) : 0;
|
|
rcu_read_unlock();
|
|
}
|
|
|
|
static void engine_record_requests(struct intel_engine_cs *engine,
|
|
struct i915_request *first,
|
|
struct drm_i915_error_engine *ee)
|
|
{
|
|
struct i915_request *request;
|
|
int count;
|
|
|
|
count = 0;
|
|
request = first;
|
|
list_for_each_entry_from(request, &engine->timeline.requests, link)
|
|
count++;
|
|
if (!count)
|
|
return;
|
|
|
|
ee->requests = kcalloc(count, sizeof(*ee->requests), GFP_ATOMIC);
|
|
if (!ee->requests)
|
|
return;
|
|
|
|
ee->num_requests = count;
|
|
|
|
count = 0;
|
|
request = first;
|
|
list_for_each_entry_from(request, &engine->timeline.requests, link) {
|
|
if (count >= ee->num_requests) {
|
|
/*
|
|
* If the ring request list was changed in
|
|
* between the point where the error request
|
|
* list was created and dimensioned and this
|
|
* point then just exit early to avoid crashes.
|
|
*
|
|
* We don't need to communicate that the
|
|
* request list changed state during error
|
|
* state capture and that the error state is
|
|
* slightly incorrect as a consequence since we
|
|
* are typically only interested in the request
|
|
* list state at the point of error state
|
|
* capture, not in any changes happening during
|
|
* the capture.
|
|
*/
|
|
break;
|
|
}
|
|
|
|
record_request(request, &ee->requests[count++]);
|
|
}
|
|
ee->num_requests = count;
|
|
}
|
|
|
|
static void error_record_engine_execlists(struct intel_engine_cs *engine,
|
|
struct drm_i915_error_engine *ee)
|
|
{
|
|
const struct intel_engine_execlists * const execlists = &engine->execlists;
|
|
unsigned int n;
|
|
|
|
for (n = 0; n < execlists_num_ports(execlists); n++) {
|
|
struct i915_request *rq = port_request(&execlists->port[n]);
|
|
|
|
if (!rq)
|
|
break;
|
|
|
|
record_request(rq, &ee->execlist[n]);
|
|
}
|
|
|
|
ee->num_ports = n;
|
|
}
|
|
|
|
static void record_context(struct drm_i915_error_context *e,
|
|
struct i915_gem_context *ctx)
|
|
{
|
|
if (ctx->pid) {
|
|
struct task_struct *task;
|
|
|
|
rcu_read_lock();
|
|
task = pid_task(ctx->pid, PIDTYPE_PID);
|
|
if (task) {
|
|
strcpy(e->comm, task->comm);
|
|
e->pid = task->pid;
|
|
}
|
|
rcu_read_unlock();
|
|
}
|
|
|
|
e->handle = ctx->user_handle;
|
|
e->hw_id = ctx->hw_id;
|
|
e->sched_attr = ctx->sched;
|
|
e->ban_score = atomic_read(&ctx->ban_score);
|
|
e->bannable = i915_gem_context_is_bannable(ctx);
|
|
e->guilty = atomic_read(&ctx->guilty_count);
|
|
e->active = atomic_read(&ctx->active_count);
|
|
}
|
|
|
|
static void request_record_user_bo(struct i915_request *request,
|
|
struct drm_i915_error_engine *ee)
|
|
{
|
|
struct i915_capture_list *c;
|
|
struct drm_i915_error_object **bo;
|
|
long count, max;
|
|
|
|
max = 0;
|
|
for (c = request->capture_list; c; c = c->next)
|
|
max++;
|
|
if (!max)
|
|
return;
|
|
|
|
bo = kmalloc_array(max, sizeof(*bo), GFP_ATOMIC);
|
|
if (!bo) {
|
|
/* If we can't capture everything, try to capture something. */
|
|
max = min_t(long, max, PAGE_SIZE / sizeof(*bo));
|
|
bo = kmalloc_array(max, sizeof(*bo), GFP_ATOMIC);
|
|
}
|
|
if (!bo)
|
|
return;
|
|
|
|
count = 0;
|
|
for (c = request->capture_list; c; c = c->next) {
|
|
bo[count] = i915_error_object_create(request->i915, c->vma);
|
|
if (!bo[count])
|
|
break;
|
|
if (++count == max)
|
|
break;
|
|
}
|
|
|
|
ee->user_bo = bo;
|
|
ee->user_bo_count = count;
|
|
}
|
|
|
|
static struct drm_i915_error_object *
|
|
capture_object(struct drm_i915_private *dev_priv,
|
|
struct drm_i915_gem_object *obj)
|
|
{
|
|
if (obj && i915_gem_object_has_pages(obj)) {
|
|
struct i915_vma fake = {
|
|
.node = { .start = U64_MAX, .size = obj->base.size },
|
|
.size = obj->base.size,
|
|
.pages = obj->mm.pages,
|
|
.obj = obj,
|
|
};
|
|
|
|
return i915_error_object_create(dev_priv, &fake);
|
|
} else {
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
static void gem_record_rings(struct i915_gpu_state *error)
|
|
{
|
|
struct drm_i915_private *i915 = error->i915;
|
|
struct i915_ggtt *ggtt = &i915->ggtt;
|
|
int i;
|
|
|
|
for (i = 0; i < I915_NUM_ENGINES; i++) {
|
|
struct intel_engine_cs *engine = i915->engine[i];
|
|
struct drm_i915_error_engine *ee = &error->engine[i];
|
|
struct i915_request *request;
|
|
|
|
ee->engine_id = -1;
|
|
|
|
if (!engine)
|
|
continue;
|
|
|
|
ee->engine_id = i;
|
|
|
|
error_record_engine_registers(error, engine, ee);
|
|
error_record_engine_waiters(engine, ee);
|
|
error_record_engine_execlists(engine, ee);
|
|
|
|
request = i915_gem_find_active_request(engine);
|
|
if (request) {
|
|
struct i915_gem_context *ctx = request->gem_context;
|
|
struct intel_ring *ring;
|
|
|
|
ee->vm = ctx->ppgtt ? &ctx->ppgtt->vm : &ggtt->vm;
|
|
|
|
record_context(&ee->context, ctx);
|
|
|
|
/* We need to copy these to an anonymous buffer
|
|
* as the simplest method to avoid being overwritten
|
|
* by userspace.
|
|
*/
|
|
ee->batchbuffer =
|
|
i915_error_object_create(i915, request->batch);
|
|
|
|
if (HAS_BROKEN_CS_TLB(i915))
|
|
ee->wa_batchbuffer =
|
|
i915_error_object_create(i915,
|
|
engine->scratch);
|
|
request_record_user_bo(request, ee);
|
|
|
|
ee->ctx =
|
|
i915_error_object_create(i915,
|
|
request->hw_context->state);
|
|
|
|
error->simulated |=
|
|
i915_gem_context_no_error_capture(ctx);
|
|
|
|
ee->rq_head = request->head;
|
|
ee->rq_post = request->postfix;
|
|
ee->rq_tail = request->tail;
|
|
|
|
ring = request->ring;
|
|
ee->cpu_ring_head = ring->head;
|
|
ee->cpu_ring_tail = ring->tail;
|
|
ee->ringbuffer =
|
|
i915_error_object_create(i915, ring->vma);
|
|
|
|
engine_record_requests(engine, request, ee);
|
|
}
|
|
|
|
ee->hws_page =
|
|
i915_error_object_create(i915,
|
|
engine->status_page.vma);
|
|
|
|
ee->wa_ctx = i915_error_object_create(i915, engine->wa_ctx.vma);
|
|
|
|
ee->default_state = capture_object(i915, engine->default_state);
|
|
}
|
|
}
|
|
|
|
static void gem_capture_vm(struct i915_gpu_state *error,
|
|
struct i915_address_space *vm,
|
|
int idx)
|
|
{
|
|
struct drm_i915_error_buffer *active_bo;
|
|
struct i915_vma *vma;
|
|
int count;
|
|
|
|
count = 0;
|
|
list_for_each_entry(vma, &vm->active_list, vm_link)
|
|
count++;
|
|
|
|
active_bo = NULL;
|
|
if (count)
|
|
active_bo = kcalloc(count, sizeof(*active_bo), GFP_ATOMIC);
|
|
if (active_bo)
|
|
count = capture_error_bo(active_bo, count, &vm->active_list, false);
|
|
else
|
|
count = 0;
|
|
|
|
error->active_vm[idx] = vm;
|
|
error->active_bo[idx] = active_bo;
|
|
error->active_bo_count[idx] = count;
|
|
}
|
|
|
|
static void capture_active_buffers(struct i915_gpu_state *error)
|
|
{
|
|
int cnt = 0, i, j;
|
|
|
|
BUILD_BUG_ON(ARRAY_SIZE(error->engine) > ARRAY_SIZE(error->active_bo));
|
|
BUILD_BUG_ON(ARRAY_SIZE(error->active_bo) != ARRAY_SIZE(error->active_vm));
|
|
BUILD_BUG_ON(ARRAY_SIZE(error->active_bo) != ARRAY_SIZE(error->active_bo_count));
|
|
|
|
/* Scan each engine looking for unique active contexts/vm */
|
|
for (i = 0; i < ARRAY_SIZE(error->engine); i++) {
|
|
struct drm_i915_error_engine *ee = &error->engine[i];
|
|
bool found;
|
|
|
|
if (!ee->vm)
|
|
continue;
|
|
|
|
found = false;
|
|
for (j = 0; j < i && !found; j++)
|
|
found = error->engine[j].vm == ee->vm;
|
|
if (!found)
|
|
gem_capture_vm(error, ee->vm, cnt++);
|
|
}
|
|
}
|
|
|
|
static void capture_pinned_buffers(struct i915_gpu_state *error)
|
|
{
|
|
struct i915_address_space *vm = &error->i915->ggtt.vm;
|
|
struct drm_i915_error_buffer *bo;
|
|
struct i915_vma *vma;
|
|
int count_inactive, count_active;
|
|
|
|
count_inactive = 0;
|
|
list_for_each_entry(vma, &vm->inactive_list, vm_link)
|
|
count_inactive++;
|
|
|
|
count_active = 0;
|
|
list_for_each_entry(vma, &vm->active_list, vm_link)
|
|
count_active++;
|
|
|
|
bo = NULL;
|
|
if (count_inactive + count_active)
|
|
bo = kcalloc(count_inactive + count_active,
|
|
sizeof(*bo), GFP_ATOMIC);
|
|
if (!bo)
|
|
return;
|
|
|
|
count_inactive = capture_error_bo(bo, count_inactive,
|
|
&vm->active_list, true);
|
|
count_active = capture_error_bo(bo + count_inactive, count_active,
|
|
&vm->inactive_list, true);
|
|
error->pinned_bo_count = count_inactive + count_active;
|
|
error->pinned_bo = bo;
|
|
}
|
|
|
|
static void capture_uc_state(struct i915_gpu_state *error)
|
|
{
|
|
struct drm_i915_private *i915 = error->i915;
|
|
struct i915_error_uc *error_uc = &error->uc;
|
|
|
|
/* Capturing uC state won't be useful if there is no GuC */
|
|
if (!error->device_info.has_guc)
|
|
return;
|
|
|
|
error_uc->guc_fw = i915->guc.fw;
|
|
error_uc->huc_fw = i915->huc.fw;
|
|
|
|
/* Non-default firmware paths will be specified by the modparam.
|
|
* As modparams are generally accesible from the userspace make
|
|
* explicit copies of the firmware paths.
|
|
*/
|
|
error_uc->guc_fw.path = kstrdup(i915->guc.fw.path, GFP_ATOMIC);
|
|
error_uc->huc_fw.path = kstrdup(i915->huc.fw.path, GFP_ATOMIC);
|
|
error_uc->guc_log = i915_error_object_create(i915, i915->guc.log.vma);
|
|
}
|
|
|
|
/* Capture all registers which don't fit into another category. */
|
|
static void capture_reg_state(struct i915_gpu_state *error)
|
|
{
|
|
struct drm_i915_private *dev_priv = error->i915;
|
|
int i;
|
|
|
|
/* General organization
|
|
* 1. Registers specific to a single generation
|
|
* 2. Registers which belong to multiple generations
|
|
* 3. Feature specific registers.
|
|
* 4. Everything else
|
|
* Please try to follow the order.
|
|
*/
|
|
|
|
/* 1: Registers specific to a single generation */
|
|
if (IS_VALLEYVIEW(dev_priv)) {
|
|
error->gtier[0] = I915_READ(GTIER);
|
|
error->ier = I915_READ(VLV_IER);
|
|
error->forcewake = I915_READ_FW(FORCEWAKE_VLV);
|
|
}
|
|
|
|
if (IS_GEN7(dev_priv))
|
|
error->err_int = I915_READ(GEN7_ERR_INT);
|
|
|
|
if (INTEL_GEN(dev_priv) >= 8) {
|
|
error->fault_data0 = I915_READ(GEN8_FAULT_TLB_DATA0);
|
|
error->fault_data1 = I915_READ(GEN8_FAULT_TLB_DATA1);
|
|
}
|
|
|
|
if (IS_GEN6(dev_priv)) {
|
|
error->forcewake = I915_READ_FW(FORCEWAKE);
|
|
error->gab_ctl = I915_READ(GAB_CTL);
|
|
error->gfx_mode = I915_READ(GFX_MODE);
|
|
}
|
|
|
|
/* 2: Registers which belong to multiple generations */
|
|
if (INTEL_GEN(dev_priv) >= 7)
|
|
error->forcewake = I915_READ_FW(FORCEWAKE_MT);
|
|
|
|
if (INTEL_GEN(dev_priv) >= 6) {
|
|
error->derrmr = I915_READ(DERRMR);
|
|
error->error = I915_READ(ERROR_GEN6);
|
|
error->done_reg = I915_READ(DONE_REG);
|
|
}
|
|
|
|
if (INTEL_GEN(dev_priv) >= 5)
|
|
error->ccid = I915_READ(CCID);
|
|
|
|
/* 3: Feature specific registers */
|
|
if (IS_GEN6(dev_priv) || IS_GEN7(dev_priv)) {
|
|
error->gam_ecochk = I915_READ(GAM_ECOCHK);
|
|
error->gac_eco = I915_READ(GAC_ECO_BITS);
|
|
}
|
|
|
|
/* 4: Everything else */
|
|
if (INTEL_GEN(dev_priv) >= 11) {
|
|
error->ier = I915_READ(GEN8_DE_MISC_IER);
|
|
error->gtier[0] = I915_READ(GEN11_RENDER_COPY_INTR_ENABLE);
|
|
error->gtier[1] = I915_READ(GEN11_VCS_VECS_INTR_ENABLE);
|
|
error->gtier[2] = I915_READ(GEN11_GUC_SG_INTR_ENABLE);
|
|
error->gtier[3] = I915_READ(GEN11_GPM_WGBOXPERF_INTR_ENABLE);
|
|
error->gtier[4] = I915_READ(GEN11_CRYPTO_RSVD_INTR_ENABLE);
|
|
error->gtier[5] = I915_READ(GEN11_GUNIT_CSME_INTR_ENABLE);
|
|
error->ngtier = 6;
|
|
} else if (INTEL_GEN(dev_priv) >= 8) {
|
|
error->ier = I915_READ(GEN8_DE_MISC_IER);
|
|
for (i = 0; i < 4; i++)
|
|
error->gtier[i] = I915_READ(GEN8_GT_IER(i));
|
|
error->ngtier = 4;
|
|
} else if (HAS_PCH_SPLIT(dev_priv)) {
|
|
error->ier = I915_READ(DEIER);
|
|
error->gtier[0] = I915_READ(GTIER);
|
|
error->ngtier = 1;
|
|
} else if (IS_GEN2(dev_priv)) {
|
|
error->ier = I915_READ16(IER);
|
|
} else if (!IS_VALLEYVIEW(dev_priv)) {
|
|
error->ier = I915_READ(IER);
|
|
}
|
|
error->eir = I915_READ(EIR);
|
|
error->pgtbl_er = I915_READ(PGTBL_ER);
|
|
}
|
|
|
|
static void i915_error_capture_msg(struct drm_i915_private *dev_priv,
|
|
struct i915_gpu_state *error,
|
|
u32 engine_mask,
|
|
const char *error_msg)
|
|
{
|
|
u32 ecode;
|
|
int engine_id = -1, len;
|
|
|
|
ecode = i915_error_generate_code(dev_priv, error, &engine_id);
|
|
|
|
len = scnprintf(error->error_msg, sizeof(error->error_msg),
|
|
"GPU HANG: ecode %d:%d:0x%08x",
|
|
INTEL_GEN(dev_priv), engine_id, ecode);
|
|
|
|
if (engine_id != -1 && error->engine[engine_id].context.pid)
|
|
len += scnprintf(error->error_msg + len,
|
|
sizeof(error->error_msg) - len,
|
|
", in %s [%d]",
|
|
error->engine[engine_id].context.comm,
|
|
error->engine[engine_id].context.pid);
|
|
|
|
scnprintf(error->error_msg + len, sizeof(error->error_msg) - len,
|
|
", reason: %s, action: %s",
|
|
error_msg,
|
|
engine_mask ? "reset" : "continue");
|
|
}
|
|
|
|
static void capture_gen_state(struct i915_gpu_state *error)
|
|
{
|
|
struct drm_i915_private *i915 = error->i915;
|
|
|
|
error->awake = i915->gt.awake;
|
|
error->wakelock = atomic_read(&i915->runtime_pm.wakeref_count);
|
|
error->suspended = i915->runtime_pm.suspended;
|
|
|
|
error->iommu = -1;
|
|
#ifdef CONFIG_INTEL_IOMMU
|
|
error->iommu = intel_iommu_gfx_mapped;
|
|
#endif
|
|
error->reset_count = i915_reset_count(&i915->gpu_error);
|
|
error->suspend_count = i915->suspend_count;
|
|
|
|
memcpy(&error->device_info,
|
|
INTEL_INFO(i915),
|
|
sizeof(error->device_info));
|
|
error->driver_caps = i915->caps;
|
|
}
|
|
|
|
static __always_inline void dup_param(const char *type, void *x)
|
|
{
|
|
if (!__builtin_strcmp(type, "char *"))
|
|
*(void **)x = kstrdup(*(void **)x, GFP_ATOMIC);
|
|
}
|
|
|
|
static void capture_params(struct i915_gpu_state *error)
|
|
{
|
|
error->params = i915_modparams;
|
|
#define DUP(T, x, ...) dup_param(#T, &error->params.x);
|
|
I915_PARAMS_FOR_EACH(DUP);
|
|
#undef DUP
|
|
}
|
|
|
|
static unsigned long capture_find_epoch(const struct i915_gpu_state *error)
|
|
{
|
|
unsigned long epoch = error->capture;
|
|
int i;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(error->engine); i++) {
|
|
const struct drm_i915_error_engine *ee = &error->engine[i];
|
|
|
|
if (ee->hangcheck_stalled &&
|
|
time_before(ee->hangcheck_timestamp, epoch))
|
|
epoch = ee->hangcheck_timestamp;
|
|
}
|
|
|
|
return epoch;
|
|
}
|
|
|
|
static int capture(void *data)
|
|
{
|
|
struct i915_gpu_state *error = data;
|
|
|
|
error->time = ktime_get_real();
|
|
error->boottime = ktime_get_boottime();
|
|
error->uptime = ktime_sub(ktime_get(),
|
|
error->i915->gt.last_init_time);
|
|
error->capture = jiffies;
|
|
|
|
capture_params(error);
|
|
capture_gen_state(error);
|
|
capture_uc_state(error);
|
|
capture_reg_state(error);
|
|
gem_record_fences(error);
|
|
gem_record_rings(error);
|
|
capture_active_buffers(error);
|
|
capture_pinned_buffers(error);
|
|
|
|
error->overlay = intel_overlay_capture_error_state(error->i915);
|
|
error->display = intel_display_capture_error_state(error->i915);
|
|
|
|
error->epoch = capture_find_epoch(error);
|
|
|
|
return 0;
|
|
}
|
|
|
|
#define DAY_AS_SECONDS(x) (24 * 60 * 60 * (x))
|
|
|
|
struct i915_gpu_state *
|
|
i915_capture_gpu_state(struct drm_i915_private *i915)
|
|
{
|
|
struct i915_gpu_state *error;
|
|
|
|
error = kzalloc(sizeof(*error), GFP_ATOMIC);
|
|
if (!error)
|
|
return NULL;
|
|
|
|
kref_init(&error->ref);
|
|
error->i915 = i915;
|
|
|
|
stop_machine(capture, error, NULL);
|
|
|
|
return error;
|
|
}
|
|
|
|
/**
|
|
* i915_capture_error_state - capture an error record for later analysis
|
|
* @i915: i915 device
|
|
* @engine_mask: the mask of engines triggering the hang
|
|
* @error_msg: a message to insert into the error capture header
|
|
*
|
|
* 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_i915_private *i915,
|
|
u32 engine_mask,
|
|
const char *error_msg)
|
|
{
|
|
static bool warned;
|
|
struct i915_gpu_state *error;
|
|
unsigned long flags;
|
|
|
|
if (!i915_modparams.error_capture)
|
|
return;
|
|
|
|
if (READ_ONCE(i915->gpu_error.first_error))
|
|
return;
|
|
|
|
error = i915_capture_gpu_state(i915);
|
|
if (!error) {
|
|
DRM_DEBUG_DRIVER("out of memory, not capturing error state\n");
|
|
return;
|
|
}
|
|
|
|
i915_error_capture_msg(i915, error, engine_mask, error_msg);
|
|
DRM_INFO("%s\n", error->error_msg);
|
|
|
|
if (!error->simulated) {
|
|
spin_lock_irqsave(&i915->gpu_error.lock, flags);
|
|
if (!i915->gpu_error.first_error) {
|
|
i915->gpu_error.first_error = error;
|
|
error = NULL;
|
|
}
|
|
spin_unlock_irqrestore(&i915->gpu_error.lock, flags);
|
|
}
|
|
|
|
if (error) {
|
|
__i915_gpu_state_free(&error->ref);
|
|
return;
|
|
}
|
|
|
|
if (!warned &&
|
|
ktime_get_real_seconds() - DRIVER_TIMESTAMP < DAY_AS_SECONDS(180)) {
|
|
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");
|
|
DRM_INFO("GPU crash dump saved to /sys/class/drm/card%d/error\n",
|
|
i915->drm.primary->index);
|
|
warned = true;
|
|
}
|
|
}
|
|
|
|
struct i915_gpu_state *
|
|
i915_first_error_state(struct drm_i915_private *i915)
|
|
{
|
|
struct i915_gpu_state *error;
|
|
|
|
spin_lock_irq(&i915->gpu_error.lock);
|
|
error = i915->gpu_error.first_error;
|
|
if (error)
|
|
i915_gpu_state_get(error);
|
|
spin_unlock_irq(&i915->gpu_error.lock);
|
|
|
|
return error;
|
|
}
|
|
|
|
void i915_reset_error_state(struct drm_i915_private *i915)
|
|
{
|
|
struct i915_gpu_state *error;
|
|
|
|
spin_lock_irq(&i915->gpu_error.lock);
|
|
error = i915->gpu_error.first_error;
|
|
i915->gpu_error.first_error = NULL;
|
|
spin_unlock_irq(&i915->gpu_error.lock);
|
|
|
|
i915_gpu_state_put(error);
|
|
}
|