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![Mika Kuoppala](/assets/img/avatar_default.png)
This has been asked from us already. Prepare for the next time. Signed-off-by: Mika Kuoppala <mika.kuoppala@linux.intel.com> Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Link: https://patchwork.freedesktop.org/patch/msgid/20191029163841.5224-2-mika.kuoppala@linux.intel.com
1865 lines
46 KiB
C
1865 lines
46 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 <linux/ascii85.h>
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#include <linux/nmi.h>
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#include <linux/pagevec.h>
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#include <linux/scatterlist.h>
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#include <linux/utsname.h>
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#include <linux/zlib.h>
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#include <drm/drm_print.h>
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#include "display/intel_atomic.h"
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#include "display/intel_overlay.h"
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#include "gem/i915_gem_context.h"
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#include "gem/i915_gem_lmem.h"
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#include "i915_drv.h"
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#include "i915_gpu_error.h"
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#include "i915_memcpy.h"
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#include "i915_scatterlist.h"
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#include "intel_csr.h"
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#define ALLOW_FAIL (GFP_KERNEL | __GFP_RETRY_MAYFAIL | __GFP_NOWARN)
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#define ATOMIC_MAYFAIL (GFP_ATOMIC | __GFP_NOWARN)
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static void __sg_set_buf(struct scatterlist *sg,
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void *addr, unsigned int len, loff_t it)
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{
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sg->page_link = (unsigned long)virt_to_page(addr);
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sg->offset = offset_in_page(addr);
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sg->length = len;
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sg->dma_address = it;
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}
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static bool __i915_error_grow(struct drm_i915_error_state_buf *e, size_t len)
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{
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if (!len)
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return false;
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if (e->bytes + len + 1 <= e->size)
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return true;
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if (e->bytes) {
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__sg_set_buf(e->cur++, e->buf, e->bytes, e->iter);
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e->iter += e->bytes;
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e->buf = NULL;
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e->bytes = 0;
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}
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if (e->cur == e->end) {
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struct scatterlist *sgl;
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sgl = (typeof(sgl))__get_free_page(ALLOW_FAIL);
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if (!sgl) {
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e->err = -ENOMEM;
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return false;
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}
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if (e->cur) {
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e->cur->offset = 0;
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e->cur->length = 0;
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e->cur->page_link =
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(unsigned long)sgl | SG_CHAIN;
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} else {
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e->sgl = sgl;
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}
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e->cur = sgl;
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e->end = sgl + SG_MAX_SINGLE_ALLOC - 1;
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}
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e->size = ALIGN(len + 1, SZ_64K);
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e->buf = kmalloc(e->size, ALLOW_FAIL);
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if (!e->buf) {
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e->size = PAGE_ALIGN(len + 1);
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e->buf = kmalloc(e->size, GFP_KERNEL);
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}
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if (!e->buf) {
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e->err = -ENOMEM;
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return false;
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}
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return true;
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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 *fmt, va_list args)
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{
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va_list ap;
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int len;
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if (e->err)
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return;
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va_copy(ap, args);
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len = vsnprintf(NULL, 0, fmt, ap);
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va_end(ap);
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if (len <= 0) {
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e->err = len;
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return;
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}
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if (!__i915_error_grow(e, len))
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return;
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GEM_BUG_ON(e->bytes >= e->size);
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len = vscnprintf(e->buf + e->bytes, e->size - e->bytes, fmt, args);
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if (len < 0) {
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e->err = len;
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return;
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}
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e->bytes += len;
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}
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static void i915_error_puts(struct drm_i915_error_state_buf *e, const char *str)
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{
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unsigned len;
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if (e->err || !str)
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return;
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len = strlen(str);
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if (!__i915_error_grow(e, len))
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return;
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GEM_BUG_ON(e->bytes + len > e->size);
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memcpy(e->buf + e->bytes, str, len);
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e->bytes += 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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/* single threaded page allocator with a reserved stash for emergencies */
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static void pool_fini(struct pagevec *pv)
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{
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pagevec_release(pv);
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}
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static int pool_refill(struct pagevec *pv, gfp_t gfp)
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{
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while (pagevec_space(pv)) {
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struct page *p;
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p = alloc_page(gfp);
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if (!p)
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return -ENOMEM;
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pagevec_add(pv, p);
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}
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return 0;
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}
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static int pool_init(struct pagevec *pv, gfp_t gfp)
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{
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int err;
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pagevec_init(pv);
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err = pool_refill(pv, gfp);
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if (err)
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pool_fini(pv);
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return err;
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}
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static void *pool_alloc(struct pagevec *pv, gfp_t gfp)
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{
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struct page *p;
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p = alloc_page(gfp);
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if (!p && pagevec_count(pv))
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p = pv->pages[--pv->nr];
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return p ? page_address(p) : NULL;
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}
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static void pool_free(struct pagevec *pv, void *addr)
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{
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struct page *p = virt_to_page(addr);
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if (pagevec_space(pv))
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pagevec_add(pv, p);
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else
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__free_page(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 pagevec pool;
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struct z_stream_s zstream;
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void *tmp;
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bool wc;
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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 = &c->zstream;
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if (pool_init(&c->pool, ALLOW_FAIL))
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return false;
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zstream->workspace =
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kmalloc(zlib_deflate_workspacesize(MAX_WBITS, MAX_MEM_LEVEL),
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ALLOW_FAIL);
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if (!zstream->workspace) {
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pool_fini(&c->pool);
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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 = pool_alloc(&c->pool, ALLOW_FAIL);
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return true;
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}
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static bool compress_start(struct compress *c)
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{
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struct z_stream_s *zstream = &c->zstream;
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void *workspace = zstream->workspace;
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memset(zstream, 0, sizeof(*zstream));
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zstream->workspace = workspace;
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return zlib_deflateInit(zstream, Z_DEFAULT_COMPRESSION) == Z_OK;
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}
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static void *compress_next_page(struct compress *c,
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struct drm_i915_error_object *dst)
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{
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void *page;
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if (dst->page_count >= dst->num_pages)
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return ERR_PTR(-ENOSPC);
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page = pool_alloc(&c->pool, ALLOW_FAIL);
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if (!page)
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return ERR_PTR(-ENOMEM);
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return dst->pages[dst->page_count++] = page;
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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->wc && 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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zstream->next_out = compress_next_page(c, dst);
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if (IS_ERR(zstream->next_out))
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return PTR_ERR(zstream->next_out);
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zstream->avail_out = PAGE_SIZE;
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}
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if (zlib_deflate(zstream, Z_NO_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 int compress_flush(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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do {
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switch (zlib_deflate(zstream, Z_FINISH)) {
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case Z_OK: /* more space requested */
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zstream->next_out = compress_next_page(c, dst);
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if (IS_ERR(zstream->next_out))
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return PTR_ERR(zstream->next_out);
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zstream->avail_out = PAGE_SIZE;
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break;
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case Z_STREAM_END:
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goto end;
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default: /* any error */
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return -EIO;
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}
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} while (1);
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end:
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memset(zstream->next_out, 0, zstream->avail_out);
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dst->unused = zstream->avail_out;
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return 0;
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}
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static void compress_finish(struct compress *c)
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{
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zlib_deflateEnd(&c->zstream);
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}
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static void compress_fini(struct compress *c)
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{
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kfree(c->zstream.workspace);
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if (c->tmp)
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pool_free(&c->pool, c->tmp);
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pool_fini(&c->pool);
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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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struct pagevec pool;
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bool wc;
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};
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static bool compress_init(struct compress *c)
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{
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return pool_init(&c->pool, ALLOW_FAIL) == 0;
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}
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static bool compress_start(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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void *ptr;
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ptr = pool_alloc(&c->pool, ALLOW_FAIL);
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if (!ptr)
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return -ENOMEM;
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if (!(c->wc && 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 int compress_flush(struct compress *c,
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struct drm_i915_error_object *dst)
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{
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return 0;
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}
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static void compress_finish(struct compress *c)
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{
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}
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static void compress_fini(struct compress *c)
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{
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pool_fini(&c->pool);
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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 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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const struct sseu_dev_info *sseu = &RUNTIME_INFO(m->i915)->sseu;
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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->class != RENDER_CLASS || 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, sseu, 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, sseu, 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 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, seqno %8x:%08x%s%s, prio %d, emitted %dms, start %08x, head %08x, tail %08x\n",
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prefix, erq->pid, erq->context, erq->seqno,
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test_bit(DMA_FENCE_FLAG_SIGNALED_BIT,
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&erq->flags) ? "!" : "",
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test_bit(DMA_FENCE_FLAG_ENABLE_SIGNAL_BIT,
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&erq->flags) ? "+" : "",
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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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|
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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] prio %d, guilty %d active %d\n",
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header, ctx->comm, ctx->pid, ctx->sched_attr.priority,
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ctx->guilty, ctx->active);
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}
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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", ee->engine->name);
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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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|
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error_print_instdone(m, ee);
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|
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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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|
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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);
|
|
err_printf(m, " BB_STATE: 0x%08x\n", ee->bbstate);
|
|
err_printf(m, " INSTPS: 0x%08x\n", ee->instps);
|
|
}
|
|
err_printf(m, " INSTPM: 0x%08x\n", ee->instpm);
|
|
err_printf(m, " FADDR: 0x%08x %08x\n", upper_32_bits(ee->faddr),
|
|
lower_32_bits(ee->faddr));
|
|
if (INTEL_GEN(m->i915) >= 6) {
|
|
err_printf(m, " RC PSMI: 0x%08x\n", ee->rc_psmi);
|
|
err_printf(m, " FAULT_REG: 0x%08x\n", ee->fault_reg);
|
|
}
|
|
if (HAS_PPGTT(m->i915)) {
|
|
err_printf(m, " GFX_MODE: 0x%08x\n", ee->vm_info.gfx_mode);
|
|
|
|
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, " ring->head: 0x%08x\n", ee->cpu_ring_head);
|
|
err_printf(m, " ring->tail: 0x%08x\n", ee->cpu_ring_tail);
|
|
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,
|
|
const struct intel_engine_cs *engine,
|
|
const char *name,
|
|
const 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));
|
|
}
|
|
|
|
if (obj->gtt_page_sizes > I915_GTT_PAGE_SIZE_4K)
|
|
err_printf(m, "gtt_page_sizes = 0x%08x\n", obj->gtt_page_sizes);
|
|
|
|
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_runtime_info *runtime,
|
|
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(&runtime->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_gt_uc)
|
|
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);
|
|
}
|
|
|
|
static void err_free_sgl(struct scatterlist *sgl)
|
|
{
|
|
while (sgl) {
|
|
struct scatterlist *sg;
|
|
|
|
for (sg = sgl; !sg_is_chain(sg); sg++) {
|
|
kfree(sg_virt(sg));
|
|
if (sg_is_last(sg))
|
|
break;
|
|
}
|
|
|
|
sg = sg_is_last(sg) ? NULL : sg_chain_ptr(sg);
|
|
free_page((unsigned long)sgl);
|
|
sgl = sg;
|
|
}
|
|
}
|
|
|
|
static void __err_print_to_sgl(struct drm_i915_error_state_buf *m,
|
|
struct i915_gpu_state *error)
|
|
{
|
|
const struct drm_i915_error_engine *ee;
|
|
struct timespec64 ts;
|
|
int i, j;
|
|
|
|
if (*error->error_msg)
|
|
err_printf(m, "%s\n", error->error_msg);
|
|
err_printf(m, "Kernel: %s %s\n",
|
|
init_utsname()->release,
|
|
init_utsname()->machine);
|
|
err_printf(m, "Driver: %s\n", DRIVER_DATE);
|
|
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, "Capture: %lu jiffies; %d ms ago\n",
|
|
error->capture, jiffies_to_msecs(jiffies - error->capture));
|
|
|
|
for (ee = error->engine; ee; ee = ee->next)
|
|
err_printf(m, "Active process (on ring %s): %s [%d]\n",
|
|
ee->engine->name,
|
|
ee->context.comm,
|
|
ee->context.pid);
|
|
|
|
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_printf(m, "Subplatform: 0x%x\n",
|
|
intel_subplatform(&error->runtime_info,
|
|
error->device_info.platform));
|
|
err_print_pciid(m, m->i915);
|
|
|
|
err_printf(m, "IOMMU enabled?: %d\n", error->iommu);
|
|
|
|
if (HAS_CSR(m->i915)) {
|
|
struct intel_csr *csr = &m->i915->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);
|
|
|
|
for (i = 0; i < error->nfence; i++)
|
|
err_printf(m, " fence[%d] = %08llx\n", i, error->fence[i]);
|
|
|
|
if (IS_GEN_RANGE(m->i915, 6, 11)) {
|
|
err_printf(m, "ERROR: 0x%08x\n", error->error);
|
|
err_printf(m, "DONE_REG: 0x%08x\n", error->done_reg);
|
|
}
|
|
|
|
if (INTEL_GEN(m->i915) >= 8)
|
|
err_printf(m, "FAULT_TLB_DATA: 0x%08x 0x%08x\n",
|
|
error->fault_data1, error->fault_data0);
|
|
|
|
if (IS_GEN(m->i915, 7))
|
|
err_printf(m, "ERR_INT: 0x%08x\n", error->err_int);
|
|
|
|
if (IS_GEN_RANGE(m->i915, 8, 11))
|
|
err_printf(m, "GTT_CACHE_EN: 0x%08x\n", error->gtt_cache);
|
|
|
|
if (IS_GEN(m->i915, 12))
|
|
err_printf(m, "AUX_ERR_DBG: 0x%08x\n", error->aux_err);
|
|
|
|
if (INTEL_GEN(m->i915) >= 12) {
|
|
int i;
|
|
|
|
for (i = 0; i < GEN12_SFC_DONE_MAX; i++)
|
|
err_printf(m, " SFC_DONE[%d]: 0x%08x\n", i,
|
|
error->sfc_done[i]);
|
|
|
|
err_printf(m, " GAM_DONE: 0x%08x\n", error->gam_done);
|
|
}
|
|
|
|
for (ee = error->engine; ee; ee = ee->next)
|
|
error_print_engine(m, ee, error->capture);
|
|
|
|
for (ee = error->engine; ee; ee = ee->next) {
|
|
const struct drm_i915_error_object *obj;
|
|
|
|
obj = ee->batchbuffer;
|
|
if (obj) {
|
|
err_puts(m, ee->engine->name);
|
|
if (ee->context.pid)
|
|
err_printf(m, " (submitted by %s [%d])",
|
|
ee->context.comm,
|
|
ee->context.pid);
|
|
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, ee->engine, NULL, obj);
|
|
}
|
|
|
|
for (j = 0; j < ee->user_bo_count; j++)
|
|
print_error_obj(m, ee->engine, "user", ee->user_bo[j]);
|
|
|
|
if (ee->num_requests) {
|
|
err_printf(m, "%s --- %d requests\n",
|
|
ee->engine->name,
|
|
ee->num_requests);
|
|
for (j = 0; j < ee->num_requests; j++)
|
|
error_print_request(m, " ",
|
|
&ee->requests[j],
|
|
error->capture);
|
|
}
|
|
|
|
print_error_obj(m, ee->engine, "ringbuffer", ee->ringbuffer);
|
|
print_error_obj(m, ee->engine, "HW Status", ee->hws_page);
|
|
print_error_obj(m, ee->engine, "HW context", ee->ctx);
|
|
print_error_obj(m, ee->engine, "WA context", ee->wa_ctx);
|
|
print_error_obj(m, ee->engine,
|
|
"WA batchbuffer", ee->wa_batchbuffer);
|
|
print_error_obj(m, ee->engine,
|
|
"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->runtime_info,
|
|
&error->driver_caps);
|
|
err_print_params(m, &error->params);
|
|
err_print_uc(m, &error->uc);
|
|
}
|
|
|
|
static int err_print_to_sgl(struct i915_gpu_state *error)
|
|
{
|
|
struct drm_i915_error_state_buf m;
|
|
|
|
if (IS_ERR(error))
|
|
return PTR_ERR(error);
|
|
|
|
if (READ_ONCE(error->sgl))
|
|
return 0;
|
|
|
|
memset(&m, 0, sizeof(m));
|
|
m.i915 = error->i915;
|
|
|
|
__err_print_to_sgl(&m, error);
|
|
|
|
if (m.buf) {
|
|
__sg_set_buf(m.cur++, m.buf, m.bytes, m.iter);
|
|
m.bytes = 0;
|
|
m.buf = NULL;
|
|
}
|
|
if (m.cur) {
|
|
GEM_BUG_ON(m.end < m.cur);
|
|
sg_mark_end(m.cur - 1);
|
|
}
|
|
GEM_BUG_ON(m.sgl && !m.cur);
|
|
|
|
if (m.err) {
|
|
err_free_sgl(m.sgl);
|
|
return m.err;
|
|
}
|
|
|
|
if (cmpxchg(&error->sgl, NULL, m.sgl))
|
|
err_free_sgl(m.sgl);
|
|
|
|
return 0;
|
|
}
|
|
|
|
ssize_t i915_gpu_state_copy_to_buffer(struct i915_gpu_state *error,
|
|
char *buf, loff_t off, size_t rem)
|
|
{
|
|
struct scatterlist *sg;
|
|
size_t count;
|
|
loff_t pos;
|
|
int err;
|
|
|
|
if (!error || !rem)
|
|
return 0;
|
|
|
|
err = err_print_to_sgl(error);
|
|
if (err)
|
|
return err;
|
|
|
|
sg = READ_ONCE(error->fit);
|
|
if (!sg || off < sg->dma_address)
|
|
sg = error->sgl;
|
|
if (!sg)
|
|
return 0;
|
|
|
|
pos = sg->dma_address;
|
|
count = 0;
|
|
do {
|
|
size_t len, start;
|
|
|
|
if (sg_is_chain(sg)) {
|
|
sg = sg_chain_ptr(sg);
|
|
GEM_BUG_ON(sg_is_chain(sg));
|
|
}
|
|
|
|
len = sg->length;
|
|
if (pos + len <= off) {
|
|
pos += len;
|
|
continue;
|
|
}
|
|
|
|
start = sg->offset;
|
|
if (pos < off) {
|
|
GEM_BUG_ON(off - pos > len);
|
|
len -= off - pos;
|
|
start += off - pos;
|
|
pos = off;
|
|
}
|
|
|
|
len = min(len, rem);
|
|
GEM_BUG_ON(!len || len > sg->length);
|
|
|
|
memcpy(buf, page_address(sg_page(sg)) + start, len);
|
|
|
|
count += len;
|
|
pos += len;
|
|
|
|
buf += len;
|
|
rem -= len;
|
|
if (!rem) {
|
|
WRITE_ONCE(error->fit, sg);
|
|
break;
|
|
}
|
|
} while (!sg_is_last(sg++));
|
|
|
|
return count;
|
|
}
|
|
|
|
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 void cleanup_params(struct i915_gpu_state *error)
|
|
{
|
|
i915_params_free(&error->params);
|
|
}
|
|
|
|
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;
|
|
|
|
while (error->engine) {
|
|
struct drm_i915_error_engine *ee = error->engine;
|
|
|
|
error->engine = ee->next;
|
|
|
|
for (i = 0; i < ee->user_bo_count; i++)
|
|
i915_error_object_free(ee->user_bo[i]);
|
|
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);
|
|
kfree(ee);
|
|
}
|
|
|
|
kfree(error->overlay);
|
|
kfree(error->display);
|
|
|
|
cleanup_params(error);
|
|
cleanup_uc_state(error);
|
|
|
|
err_free_sgl(error->sgl);
|
|
kfree(error);
|
|
}
|
|
|
|
static struct drm_i915_error_object *
|
|
i915_error_object_create(struct drm_i915_private *i915,
|
|
struct i915_vma *vma,
|
|
struct compress *compress)
|
|
{
|
|
struct i915_ggtt *ggtt = &i915->ggtt;
|
|
const u64 slot = ggtt->error_capture.start;
|
|
struct drm_i915_error_object *dst;
|
|
unsigned long num_pages;
|
|
struct sgt_iter iter;
|
|
int ret;
|
|
|
|
might_sleep();
|
|
|
|
if (!vma || !vma->pages)
|
|
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 *), ALLOW_FAIL);
|
|
if (!dst)
|
|
return NULL;
|
|
|
|
if (!compress_start(compress)) {
|
|
kfree(dst);
|
|
return NULL;
|
|
}
|
|
|
|
dst->gtt_offset = vma->node.start;
|
|
dst->gtt_size = vma->node.size;
|
|
dst->gtt_page_sizes = vma->page_sizes.gtt;
|
|
dst->num_pages = num_pages;
|
|
dst->page_count = 0;
|
|
dst->unused = 0;
|
|
|
|
compress->wc = i915_gem_object_is_lmem(vma->obj) ||
|
|
drm_mm_node_allocated(&ggtt->error_capture);
|
|
|
|
ret = -EINVAL;
|
|
if (drm_mm_node_allocated(&ggtt->error_capture)) {
|
|
void __iomem *s;
|
|
dma_addr_t dma;
|
|
|
|
for_each_sgt_daddr(dma, iter, vma->pages) {
|
|
ggtt->vm.insert_page(&ggtt->vm, dma, slot,
|
|
I915_CACHE_NONE, 0);
|
|
|
|
s = io_mapping_map_wc(&ggtt->iomap, slot, PAGE_SIZE);
|
|
ret = compress_page(compress, (void __force *)s, dst);
|
|
io_mapping_unmap(s);
|
|
if (ret)
|
|
break;
|
|
}
|
|
} else if (i915_gem_object_is_lmem(vma->obj)) {
|
|
struct intel_memory_region *mem = vma->obj->mm.region;
|
|
dma_addr_t dma;
|
|
|
|
for_each_sgt_daddr(dma, iter, vma->pages) {
|
|
void __iomem *s;
|
|
|
|
s = io_mapping_map_atomic_wc(&mem->iomap, dma);
|
|
ret = compress_page(compress, (void __force *)s, dst);
|
|
io_mapping_unmap_atomic(s);
|
|
if (ret)
|
|
break;
|
|
}
|
|
} else {
|
|
struct page *page;
|
|
|
|
for_each_sgt_page(page, iter, vma->pages) {
|
|
void *s;
|
|
|
|
drm_clflush_pages(&page, 1);
|
|
|
|
s = kmap_atomic(page);
|
|
ret = compress_page(compress, s, dst);
|
|
kunmap_atomic(s);
|
|
|
|
drm_clflush_pages(&page, 1);
|
|
|
|
if (ret)
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (ret || compress_flush(compress, dst)) {
|
|
while (dst->page_count--)
|
|
pool_free(&compress->pool, dst->pages[dst->page_count]);
|
|
kfree(dst);
|
|
dst = NULL;
|
|
}
|
|
compress_finish(compress);
|
|
|
|
return dst;
|
|
}
|
|
|
|
/*
|
|
* 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 u32 i915_error_generate_code(struct i915_gpu_state *error)
|
|
{
|
|
const struct drm_i915_error_engine *ee = error->engine;
|
|
|
|
/*
|
|
* 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.
|
|
*/
|
|
return ee ? ee->ipehr ^ ee->instdone.instdone : 0;
|
|
}
|
|
|
|
static void gem_record_fences(struct i915_gpu_state *error)
|
|
{
|
|
struct drm_i915_private *dev_priv = error->i915;
|
|
struct intel_uncore *uncore = &dev_priv->uncore;
|
|
int i;
|
|
|
|
if (INTEL_GEN(dev_priv) >= 6) {
|
|
for (i = 0; i < dev_priv->ggtt.num_fences; i++)
|
|
error->fence[i] =
|
|
intel_uncore_read64(uncore,
|
|
FENCE_REG_GEN6_LO(i));
|
|
} else if (INTEL_GEN(dev_priv) >= 4) {
|
|
for (i = 0; i < dev_priv->ggtt.num_fences; i++)
|
|
error->fence[i] =
|
|
intel_uncore_read64(uncore,
|
|
FENCE_REG_965_LO(i));
|
|
} else {
|
|
for (i = 0; i < dev_priv->ggtt.num_fences; i++)
|
|
error->fence[i] =
|
|
intel_uncore_read(uncore, FENCE_REG(i));
|
|
}
|
|
error->nfence = i;
|
|
}
|
|
|
|
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 = ENGINE_READ(engine, RING_PSMI_CTL);
|
|
|
|
if (INTEL_GEN(dev_priv) >= 12)
|
|
ee->fault_reg = I915_READ(GEN12_RING_FAULT_REG);
|
|
else if (INTEL_GEN(dev_priv) >= 8)
|
|
ee->fault_reg = I915_READ(GEN8_RING_FAULT_REG);
|
|
else
|
|
ee->fault_reg = GEN6_RING_FAULT_REG_READ(engine);
|
|
}
|
|
|
|
if (INTEL_GEN(dev_priv) >= 4) {
|
|
ee->faddr = ENGINE_READ(engine, RING_DMA_FADD);
|
|
ee->ipeir = ENGINE_READ(engine, RING_IPEIR);
|
|
ee->ipehr = ENGINE_READ(engine, RING_IPEHR);
|
|
ee->instps = ENGINE_READ(engine, RING_INSTPS);
|
|
ee->bbaddr = ENGINE_READ(engine, RING_BBADDR);
|
|
if (INTEL_GEN(dev_priv) >= 8) {
|
|
ee->faddr |= (u64)ENGINE_READ(engine, RING_DMA_FADD_UDW) << 32;
|
|
ee->bbaddr |= (u64)ENGINE_READ(engine, RING_BBADDR_UDW) << 32;
|
|
}
|
|
ee->bbstate = ENGINE_READ(engine, RING_BBSTATE);
|
|
} else {
|
|
ee->faddr = ENGINE_READ(engine, DMA_FADD_I8XX);
|
|
ee->ipeir = ENGINE_READ(engine, IPEIR);
|
|
ee->ipehr = ENGINE_READ(engine, IPEHR);
|
|
}
|
|
|
|
intel_engine_get_instdone(engine, &ee->instdone);
|
|
|
|
ee->instpm = ENGINE_READ(engine, RING_INSTPM);
|
|
ee->acthd = intel_engine_get_active_head(engine);
|
|
ee->start = ENGINE_READ(engine, RING_START);
|
|
ee->head = ENGINE_READ(engine, RING_HEAD);
|
|
ee->tail = ENGINE_READ(engine, RING_TAIL);
|
|
ee->ctl = ENGINE_READ(engine, RING_CTL);
|
|
if (INTEL_GEN(dev_priv) > 2)
|
|
ee->mode = ENGINE_READ(engine, RING_MI_MODE);
|
|
|
|
if (!HWS_NEEDS_PHYSICAL(dev_priv)) {
|
|
i915_reg_t mmio;
|
|
|
|
if (IS_GEN(dev_priv, 7)) {
|
|
switch (engine->id) {
|
|
default:
|
|
MISSING_CASE(engine->id);
|
|
/* fall through */
|
|
case RCS0:
|
|
mmio = RENDER_HWS_PGA_GEN7;
|
|
break;
|
|
case BCS0:
|
|
mmio = BLT_HWS_PGA_GEN7;
|
|
break;
|
|
case VCS0:
|
|
mmio = BSD_HWS_PGA_GEN7;
|
|
break;
|
|
case VECS0:
|
|
mmio = VEBOX_HWS_PGA_GEN7;
|
|
break;
|
|
}
|
|
} else if (IS_GEN(engine->i915, 6)) {
|
|
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->reset_count = i915_reset_engine_count(&dev_priv->gpu_error,
|
|
engine);
|
|
|
|
if (HAS_PPGTT(dev_priv)) {
|
|
int i;
|
|
|
|
ee->vm_info.gfx_mode = ENGINE_READ(engine, RING_MODE_GEN7);
|
|
|
|
if (IS_GEN(dev_priv, 6)) {
|
|
ee->vm_info.pp_dir_base =
|
|
ENGINE_READ(engine, RING_PP_DIR_BASE_READ);
|
|
} else if (IS_GEN(dev_priv, 7)) {
|
|
ee->vm_info.pp_dir_base =
|
|
ENGINE_READ(engine, RING_PP_DIR_BASE);
|
|
} else if (INTEL_GEN(dev_priv) >= 8) {
|
|
u32 base = engine->mmio_base;
|
|
|
|
for (i = 0; i < 4; i++) {
|
|
ee->vm_info.pdp[i] =
|
|
I915_READ(GEN8_RING_PDP_UDW(base, i));
|
|
ee->vm_info.pdp[i] <<= 32;
|
|
ee->vm_info.pdp[i] |=
|
|
I915_READ(GEN8_RING_PDP_LDW(base, i));
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
static void record_request(const struct i915_request *request,
|
|
struct drm_i915_error_request *erq)
|
|
{
|
|
const struct i915_gem_context *ctx = request->gem_context;
|
|
|
|
erq->flags = request->fence.flags;
|
|
erq->context = request->fence.context;
|
|
erq->seqno = request->fence.seqno;
|
|
erq->sched_attr = request->sched.attr;
|
|
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->active.requests, sched.link)
|
|
count++;
|
|
if (!count)
|
|
return;
|
|
|
|
ee->requests = kcalloc(count, sizeof(*ee->requests), ATOMIC_MAYFAIL);
|
|
if (!ee->requests)
|
|
return;
|
|
|
|
ee->num_requests = count;
|
|
|
|
count = 0;
|
|
request = first;
|
|
list_for_each_entry_from(request,
|
|
&engine->active.requests, sched.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(const struct intel_engine_cs *engine,
|
|
struct drm_i915_error_engine *ee)
|
|
{
|
|
const struct intel_engine_execlists * const execlists = &engine->execlists;
|
|
struct i915_request * const *port = execlists->active;
|
|
unsigned int n = 0;
|
|
|
|
while (*port)
|
|
record_request(*port++, &ee->execlist[n++]);
|
|
|
|
ee->num_ports = n;
|
|
}
|
|
|
|
static bool record_context(struct drm_i915_error_context *e,
|
|
const struct i915_request *rq)
|
|
{
|
|
const struct i915_gem_context *ctx = rq->gem_context;
|
|
|
|
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->sched_attr = ctx->sched;
|
|
e->guilty = atomic_read(&ctx->guilty_count);
|
|
e->active = atomic_read(&ctx->active_count);
|
|
|
|
return i915_gem_context_no_error_capture(ctx);
|
|
}
|
|
|
|
struct capture_vma {
|
|
struct capture_vma *next;
|
|
void **slot;
|
|
};
|
|
|
|
static struct capture_vma *
|
|
capture_vma(struct capture_vma *next,
|
|
struct i915_vma *vma,
|
|
struct drm_i915_error_object **out)
|
|
{
|
|
struct capture_vma *c;
|
|
|
|
*out = NULL;
|
|
if (!vma)
|
|
return next;
|
|
|
|
c = kmalloc(sizeof(*c), ATOMIC_MAYFAIL);
|
|
if (!c)
|
|
return next;
|
|
|
|
if (!i915_active_acquire_if_busy(&vma->active)) {
|
|
kfree(c);
|
|
return next;
|
|
}
|
|
|
|
c->slot = (void **)out;
|
|
*c->slot = i915_vma_get(vma);
|
|
|
|
c->next = next;
|
|
return c;
|
|
}
|
|
|
|
static struct capture_vma *
|
|
request_record_user_bo(struct i915_request *request,
|
|
struct drm_i915_error_engine *ee,
|
|
struct capture_vma *capture)
|
|
{
|
|
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 capture;
|
|
|
|
bo = kmalloc_array(max, sizeof(*bo), ATOMIC_MAYFAIL);
|
|
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), ATOMIC_MAYFAIL);
|
|
}
|
|
if (!bo)
|
|
return capture;
|
|
|
|
count = 0;
|
|
for (c = request->capture_list; c; c = c->next) {
|
|
capture = capture_vma(capture, c->vma, &bo[count]);
|
|
if (++count == max)
|
|
break;
|
|
}
|
|
|
|
ee->user_bo = bo;
|
|
ee->user_bo_count = count;
|
|
|
|
return capture;
|
|
}
|
|
|
|
static struct drm_i915_error_object *
|
|
capture_object(struct drm_i915_private *dev_priv,
|
|
struct drm_i915_gem_object *obj,
|
|
struct compress *compress)
|
|
{
|
|
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, compress);
|
|
} else {
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
static void
|
|
gem_record_rings(struct i915_gpu_state *error, struct compress *compress)
|
|
{
|
|
struct drm_i915_private *i915 = error->i915;
|
|
struct intel_engine_cs *engine;
|
|
struct drm_i915_error_engine *ee;
|
|
|
|
ee = kzalloc(sizeof(*ee), GFP_KERNEL);
|
|
if (!ee)
|
|
return;
|
|
|
|
for_each_uabi_engine(engine, i915) {
|
|
struct capture_vma *capture = NULL;
|
|
struct i915_request *request;
|
|
unsigned long flags;
|
|
|
|
/* Refill our page pool before entering atomic section */
|
|
pool_refill(&compress->pool, ALLOW_FAIL);
|
|
|
|
spin_lock_irqsave(&engine->active.lock, flags);
|
|
request = intel_engine_find_active_request(engine);
|
|
if (!request) {
|
|
spin_unlock_irqrestore(&engine->active.lock, flags);
|
|
continue;
|
|
}
|
|
|
|
error->simulated |= record_context(&ee->context, request);
|
|
|
|
/*
|
|
* We need to copy these to an anonymous buffer
|
|
* as the simplest method to avoid being overwritten
|
|
* by userspace.
|
|
*/
|
|
capture = capture_vma(capture,
|
|
request->batch,
|
|
&ee->batchbuffer);
|
|
|
|
if (HAS_BROKEN_CS_TLB(i915))
|
|
capture = capture_vma(capture,
|
|
engine->gt->scratch,
|
|
&ee->wa_batchbuffer);
|
|
|
|
capture = request_record_user_bo(request, ee, capture);
|
|
|
|
capture = capture_vma(capture,
|
|
request->hw_context->state,
|
|
&ee->ctx);
|
|
|
|
capture = capture_vma(capture,
|
|
request->ring->vma,
|
|
&ee->ringbuffer);
|
|
|
|
ee->cpu_ring_head = request->ring->head;
|
|
ee->cpu_ring_tail = request->ring->tail;
|
|
|
|
ee->rq_head = request->head;
|
|
ee->rq_post = request->postfix;
|
|
ee->rq_tail = request->tail;
|
|
|
|
engine_record_requests(engine, request, ee);
|
|
spin_unlock_irqrestore(&engine->active.lock, flags);
|
|
|
|
error_record_engine_registers(error, engine, ee);
|
|
error_record_engine_execlists(engine, ee);
|
|
|
|
while (capture) {
|
|
struct capture_vma *this = capture;
|
|
struct i915_vma *vma = *this->slot;
|
|
|
|
*this->slot =
|
|
i915_error_object_create(i915, vma, compress);
|
|
|
|
i915_active_release(&vma->active);
|
|
i915_vma_put(vma);
|
|
|
|
capture = this->next;
|
|
kfree(this);
|
|
}
|
|
|
|
ee->hws_page =
|
|
i915_error_object_create(i915,
|
|
engine->status_page.vma,
|
|
compress);
|
|
|
|
ee->wa_ctx =
|
|
i915_error_object_create(i915,
|
|
engine->wa_ctx.vma,
|
|
compress);
|
|
|
|
ee->default_state =
|
|
capture_object(i915, engine->default_state, compress);
|
|
|
|
ee->engine = engine;
|
|
|
|
ee->next = error->engine;
|
|
error->engine = ee;
|
|
|
|
ee = kzalloc(sizeof(*ee), GFP_KERNEL);
|
|
if (!ee)
|
|
return;
|
|
}
|
|
|
|
kfree(ee);
|
|
}
|
|
|
|
static void
|
|
capture_uc_state(struct i915_gpu_state *error, struct compress *compress)
|
|
{
|
|
struct drm_i915_private *i915 = error->i915;
|
|
struct i915_error_uc *error_uc = &error->uc;
|
|
struct intel_uc *uc = &i915->gt.uc;
|
|
|
|
/* Capturing uC state won't be useful if there is no GuC */
|
|
if (!error->device_info.has_gt_uc)
|
|
return;
|
|
|
|
memcpy(&error_uc->guc_fw, &uc->guc.fw, sizeof(uc->guc.fw));
|
|
memcpy(&error_uc->huc_fw, &uc->huc.fw, sizeof(uc->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(uc->guc.fw.path, ALLOW_FAIL);
|
|
error_uc->huc_fw.path = kstrdup(uc->huc.fw.path, ALLOW_FAIL);
|
|
error_uc->guc_log = i915_error_object_create(i915,
|
|
uc->guc.log.vma,
|
|
compress);
|
|
}
|
|
|
|
/* Capture all registers which don't fit into another category. */
|
|
static void capture_reg_state(struct i915_gpu_state *error)
|
|
{
|
|
struct drm_i915_private *i915 = error->i915;
|
|
struct intel_uncore *uncore = &i915->uncore;
|
|
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(i915)) {
|
|
error->gtier[0] = intel_uncore_read(uncore, GTIER);
|
|
error->ier = intel_uncore_read(uncore, VLV_IER);
|
|
error->forcewake = intel_uncore_read_fw(uncore, FORCEWAKE_VLV);
|
|
}
|
|
|
|
if (IS_GEN(i915, 7))
|
|
error->err_int = intel_uncore_read(uncore, GEN7_ERR_INT);
|
|
|
|
if (INTEL_GEN(i915) >= 12) {
|
|
error->fault_data0 = intel_uncore_read(uncore,
|
|
GEN12_FAULT_TLB_DATA0);
|
|
error->fault_data1 = intel_uncore_read(uncore,
|
|
GEN12_FAULT_TLB_DATA1);
|
|
} else if (INTEL_GEN(i915) >= 8) {
|
|
error->fault_data0 = intel_uncore_read(uncore,
|
|
GEN8_FAULT_TLB_DATA0);
|
|
error->fault_data1 = intel_uncore_read(uncore,
|
|
GEN8_FAULT_TLB_DATA1);
|
|
}
|
|
|
|
if (IS_GEN(i915, 6)) {
|
|
error->forcewake = intel_uncore_read_fw(uncore, FORCEWAKE);
|
|
error->gab_ctl = intel_uncore_read(uncore, GAB_CTL);
|
|
error->gfx_mode = intel_uncore_read(uncore, GFX_MODE);
|
|
}
|
|
|
|
/* 2: Registers which belong to multiple generations */
|
|
if (INTEL_GEN(i915) >= 7)
|
|
error->forcewake = intel_uncore_read_fw(uncore, FORCEWAKE_MT);
|
|
|
|
if (INTEL_GEN(i915) >= 6) {
|
|
error->derrmr = intel_uncore_read(uncore, DERRMR);
|
|
if (INTEL_GEN(i915) < 12) {
|
|
error->error = intel_uncore_read(uncore, ERROR_GEN6);
|
|
error->done_reg = intel_uncore_read(uncore, DONE_REG);
|
|
}
|
|
}
|
|
|
|
if (INTEL_GEN(i915) >= 5)
|
|
error->ccid = intel_uncore_read(uncore, CCID(RENDER_RING_BASE));
|
|
|
|
/* 3: Feature specific registers */
|
|
if (IS_GEN_RANGE(i915, 6, 7)) {
|
|
error->gam_ecochk = intel_uncore_read(uncore, GAM_ECOCHK);
|
|
error->gac_eco = intel_uncore_read(uncore, GAC_ECO_BITS);
|
|
}
|
|
|
|
if (IS_GEN_RANGE(i915, 8, 11))
|
|
error->gtt_cache = intel_uncore_read(uncore, HSW_GTT_CACHE_EN);
|
|
|
|
if (IS_GEN(i915, 12))
|
|
error->aux_err = intel_uncore_read(uncore, GEN12_AUX_ERR_DBG);
|
|
|
|
if (INTEL_GEN(i915) >= 12) {
|
|
for (i = 0; i < GEN12_SFC_DONE_MAX; i++) {
|
|
error->sfc_done[i] =
|
|
intel_uncore_read(uncore, GEN12_SFC_DONE(i));
|
|
}
|
|
|
|
error->gam_done = intel_uncore_read(uncore, GEN12_GAM_DONE);
|
|
}
|
|
|
|
/* 4: Everything else */
|
|
if (INTEL_GEN(i915) >= 11) {
|
|
error->ier = intel_uncore_read(uncore, GEN8_DE_MISC_IER);
|
|
error->gtier[0] =
|
|
intel_uncore_read(uncore,
|
|
GEN11_RENDER_COPY_INTR_ENABLE);
|
|
error->gtier[1] =
|
|
intel_uncore_read(uncore, GEN11_VCS_VECS_INTR_ENABLE);
|
|
error->gtier[2] =
|
|
intel_uncore_read(uncore, GEN11_GUC_SG_INTR_ENABLE);
|
|
error->gtier[3] =
|
|
intel_uncore_read(uncore,
|
|
GEN11_GPM_WGBOXPERF_INTR_ENABLE);
|
|
error->gtier[4] =
|
|
intel_uncore_read(uncore,
|
|
GEN11_CRYPTO_RSVD_INTR_ENABLE);
|
|
error->gtier[5] =
|
|
intel_uncore_read(uncore,
|
|
GEN11_GUNIT_CSME_INTR_ENABLE);
|
|
error->ngtier = 6;
|
|
} else if (INTEL_GEN(i915) >= 8) {
|
|
error->ier = intel_uncore_read(uncore, GEN8_DE_MISC_IER);
|
|
for (i = 0; i < 4; i++)
|
|
error->gtier[i] = intel_uncore_read(uncore,
|
|
GEN8_GT_IER(i));
|
|
error->ngtier = 4;
|
|
} else if (HAS_PCH_SPLIT(i915)) {
|
|
error->ier = intel_uncore_read(uncore, DEIER);
|
|
error->gtier[0] = intel_uncore_read(uncore, GTIER);
|
|
error->ngtier = 1;
|
|
} else if (IS_GEN(i915, 2)) {
|
|
error->ier = intel_uncore_read16(uncore, GEN2_IER);
|
|
} else if (!IS_VALLEYVIEW(i915)) {
|
|
error->ier = intel_uncore_read(uncore, GEN2_IER);
|
|
}
|
|
error->eir = intel_uncore_read(uncore, EIR);
|
|
error->pgtbl_er = intel_uncore_read(uncore, PGTBL_ER);
|
|
}
|
|
|
|
static const char *
|
|
error_msg(struct i915_gpu_state *error,
|
|
intel_engine_mask_t engines, const char *msg)
|
|
{
|
|
int len;
|
|
|
|
len = scnprintf(error->error_msg, sizeof(error->error_msg),
|
|
"GPU HANG: ecode %d:%x:0x%08x",
|
|
INTEL_GEN(error->i915), engines,
|
|
i915_error_generate_code(error));
|
|
if (error->engine) {
|
|
/* Just show the first executing process, more is confusing */
|
|
len += scnprintf(error->error_msg + len,
|
|
sizeof(error->error_msg) - len,
|
|
", in %s [%d]",
|
|
error->engine->context.comm,
|
|
error->engine->context.pid);
|
|
}
|
|
if (msg)
|
|
len += scnprintf(error->error_msg + len,
|
|
sizeof(error->error_msg) - len,
|
|
", %s", msg);
|
|
|
|
return error->error_msg;
|
|
}
|
|
|
|
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));
|
|
memcpy(&error->runtime_info,
|
|
RUNTIME_INFO(i915),
|
|
sizeof(error->runtime_info));
|
|
error->driver_caps = i915->caps;
|
|
}
|
|
|
|
static void capture_params(struct i915_gpu_state *error)
|
|
{
|
|
i915_params_copy(&error->params, &i915_modparams);
|
|
}
|
|
|
|
static void capture_finish(struct i915_gpu_state *error)
|
|
{
|
|
struct i915_ggtt *ggtt = &error->i915->ggtt;
|
|
|
|
if (drm_mm_node_allocated(&ggtt->error_capture)) {
|
|
const u64 slot = ggtt->error_capture.start;
|
|
|
|
ggtt->vm.clear_range(&ggtt->vm, slot, PAGE_SIZE);
|
|
}
|
|
}
|
|
|
|
#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;
|
|
struct compress compress;
|
|
|
|
/* Check if GPU capture has been disabled */
|
|
error = READ_ONCE(i915->gpu_error.first_error);
|
|
if (IS_ERR(error))
|
|
return error;
|
|
|
|
error = kzalloc(sizeof(*error), ALLOW_FAIL);
|
|
if (!error) {
|
|
i915_disable_error_state(i915, -ENOMEM);
|
|
return ERR_PTR(-ENOMEM);
|
|
}
|
|
|
|
if (!compress_init(&compress)) {
|
|
kfree(error);
|
|
i915_disable_error_state(i915, -ENOMEM);
|
|
return ERR_PTR(-ENOMEM);
|
|
}
|
|
|
|
kref_init(&error->ref);
|
|
error->i915 = i915;
|
|
|
|
error->time = ktime_get_real();
|
|
error->boottime = ktime_get_boottime();
|
|
error->uptime = ktime_sub(ktime_get(), i915->gt.last_init_time);
|
|
error->capture = jiffies;
|
|
|
|
capture_params(error);
|
|
capture_gen_state(error);
|
|
capture_uc_state(error, &compress);
|
|
capture_reg_state(error);
|
|
gem_record_fences(error);
|
|
gem_record_rings(error, &compress);
|
|
|
|
error->overlay = intel_overlay_capture_error_state(i915);
|
|
error->display = intel_display_capture_error_state(i915);
|
|
|
|
capture_finish(error);
|
|
compress_fini(&compress);
|
|
|
|
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
|
|
* @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,
|
|
intel_engine_mask_t engine_mask,
|
|
const char *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 (IS_ERR(error))
|
|
return;
|
|
|
|
dev_info(i915->drm.dev, "%s\n", error_msg(error, engine_mask, 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 (!xchg(&warned, true) &&
|
|
ktime_get_real_seconds() - DRIVER_TIMESTAMP < DAY_AS_SECONDS(180)) {
|
|
pr_info("GPU hangs can indicate a bug anywhere in the entire gfx stack, including userspace.\n");
|
|
pr_info("Please file a _new_ bug report on bugs.freedesktop.org against DRI -> DRM/Intel\n");
|
|
pr_info("drm/i915 developers can then reassign to the right component if it's not a kernel issue.\n");
|
|
pr_info("The GPU crash dump is required to analyze GPU hangs, so please always attach it.\n");
|
|
pr_info("GPU crash dump saved to /sys/class/drm/card%d/error\n",
|
|
i915->drm.primary->index);
|
|
}
|
|
}
|
|
|
|
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 (!IS_ERR_OR_NULL(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;
|
|
if (error != ERR_PTR(-ENODEV)) /* if disabled, always disabled */
|
|
i915->gpu_error.first_error = NULL;
|
|
spin_unlock_irq(&i915->gpu_error.lock);
|
|
|
|
if (!IS_ERR_OR_NULL(error))
|
|
i915_gpu_state_put(error);
|
|
}
|
|
|
|
void i915_disable_error_state(struct drm_i915_private *i915, int err)
|
|
{
|
|
spin_lock_irq(&i915->gpu_error.lock);
|
|
if (!i915->gpu_error.first_error)
|
|
i915->gpu_error.first_error = ERR_PTR(err);
|
|
spin_unlock_irq(&i915->gpu_error.lock);
|
|
}
|