linux_dsm_epyc7002/drivers/gpu/drm/i915/intel_atomic_plane.c
Chris Wilson 5935485f8e drm/i915: Move the policy for placement of the GGTT vma into the caller
Currently we make the unilateral decision inside
i915_gem_object_pin_to_display() where the VMA should resided (inside
the fence and mappable region or above?). This is not our decision to
make as it impacts on how the display engine can use the resulting
scanout object, and it would rather instruct us where to place the VMA so
that it can enable the features it wants. As such, make the pin flags an
argument to i915_gem_object_pin_to_display() and control them from
intel_pin_and_fence_fb_obj()

Whilst taking control of the mapping for ourselves, start tracking how
we use it to avoid trying to free a fence we never claimed:

<3>[  227.151869] GEM_BUG_ON(vma->fence->pin_count <= 0)
<4>[  227.152064] ------------[ cut here ]------------
<2>[  227.152068] kernel BUG at drivers/gpu/drm/i915/i915_vma.h:391!
<4>[  227.152084] invalid opcode: 0000 [#1] PREEMPT SMP KASAN PTI
<0>[  227.152092] Dumping ftrace buffer:
<0>[  227.152099]    (ftrace buffer empty)
<4>[  227.152102] Modules linked in: i915 snd_hda_codec_analog snd_hda_codec_generic coretemp snd_hda_intel snd_hda_codec snd_hwdep snd_hda_core snd_pcm lpc_ich e1000e mei_me mei prime_numbers
<4>[  227.152131] CPU: 1 PID: 1587 Comm: kworker/u16:49 Tainted: G     U           4.16.0-rc1-gbab67b2f6177-kasan_7+ #1
<4>[  227.152134] Hardware name: Dell Inc. OptiPlex 755                 /0PU052, BIOS A08 02/19/2008
<4>[  227.152236] Workqueue: events_unbound intel_atomic_commit_work [i915]
<4>[  227.152292] RIP: 0010:intel_unpin_fb_vma+0x23a/0x2a0 [i915]
<4>[  227.152295] RSP: 0018:ffff88005aad7b68 EFLAGS: 00010286
<4>[  227.152300] RAX: 0000000000000026 RBX: ffff88005c359580 RCX: 0000000000000000
<4>[  227.152304] RDX: 0000000000000026 RSI: ffffffff8707d840 RDI: ffffed000b55af63
<4>[  227.152307] RBP: ffff880056817e58 R08: 0000000000000001 R09: 0000000000000000
<4>[  227.152311] R10: ffff88005aad7b88 R11: 0000000000000000 R12: ffff8800568184d0
<4>[  227.152314] R13: ffff880065b5ab08 R14: 0000000000000000 R15: dffffc0000000000
<4>[  227.152318] FS:  0000000000000000(0000) GS:ffff88006ac40000(0000) knlGS:0000000000000000
<4>[  227.152322] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
<4>[  227.152325] CR2: 00007f5fb25550a8 CR3: 0000000068c78000 CR4: 00000000000006e0
<4>[  227.152328] Call Trace:
<4>[  227.152385]  intel_cleanup_plane_fb+0x6b/0xd0 [i915]
<4>[  227.152395]  drm_atomic_helper_cleanup_planes+0x166/0x280
<4>[  227.152452]  intel_atomic_commit_tail+0x159d/0x3380 [i915]
<4>[  227.152463]  ? process_one_work+0x66e/0x1460
<4>[  227.152516]  ? skl_update_crtcs+0x9c0/0x9c0 [i915]
<4>[  227.152523]  ? lock_acquire+0x13d/0x390
<4>[  227.152527]  ? lock_acquire+0x13d/0x390
<4>[  227.152534]  process_one_work+0x71a/0x1460
<4>[  227.152540]  ? __schedule+0x815/0x1e20
<4>[  227.152547]  ? pwq_dec_nr_in_flight+0x2b0/0x2b0
<4>[  227.152553]  ? _raw_spin_lock_irq+0xa/0x40
<4>[  227.152559]  worker_thread+0xdf/0xf60
<4>[  227.152569]  ? process_one_work+0x1460/0x1460
<4>[  227.152573]  kthread+0x2cf/0x3c0
<4>[  227.152578]  ? _kthread_create_on_node+0xa0/0xa0
<4>[  227.152583]  ret_from_fork+0x3a/0x50
<4>[  227.152591] Code: c6 00 11 86 c0 48 c7 c7 e0 bd 85 c0 e8 60 e7 a9 c4 0f ff e9 1f fe ff ff 48 c7 c6 40 10 86 c0 48 c7 c7 e0 ca 85 c0 e8 2b 95 bd c4 <0f> 0b 48 89 ef e8 4c 44 e8 c4 e9 ef fd ff ff e8 42 44 e8 c4 e9
<1>[  227.152720] RIP: intel_unpin_fb_vma+0x23a/0x2a0 [i915] RSP: ffff88005aad7b68

v2: i915_vma_pin_fence() is a no-op if a fence isn't required, so check
vma->fence as well.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180220134208.24988-2-chris@chris-wilson.co.uk
2018-02-20 19:03:59 +00:00

308 lines
9.5 KiB
C

/*
* Copyright © 2014 Intel Corporation
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
/**
* DOC: atomic plane helpers
*
* The functions here are used by the atomic plane helper functions to
* implement legacy plane updates (i.e., drm_plane->update_plane() and
* drm_plane->disable_plane()). This allows plane updates to use the
* atomic state infrastructure and perform plane updates as separate
* prepare/check/commit/cleanup steps.
*/
#include <drm/drmP.h>
#include <drm/drm_atomic_helper.h>
#include <drm/drm_plane_helper.h>
#include "intel_drv.h"
/**
* intel_create_plane_state - create plane state object
* @plane: drm plane
*
* Allocates a fresh plane state for the given plane and sets some of
* the state values to sensible initial values.
*
* Returns: A newly allocated plane state, or NULL on failure
*/
struct intel_plane_state *
intel_create_plane_state(struct drm_plane *plane)
{
struct intel_plane_state *state;
state = kzalloc(sizeof(*state), GFP_KERNEL);
if (!state)
return NULL;
state->base.plane = plane;
state->base.rotation = DRM_MODE_ROTATE_0;
return state;
}
/**
* intel_plane_duplicate_state - duplicate plane state
* @plane: drm plane
*
* Allocates and returns a copy of the plane state (both common and
* Intel-specific) for the specified plane.
*
* Returns: The newly allocated plane state, or NULL on failure.
*/
struct drm_plane_state *
intel_plane_duplicate_state(struct drm_plane *plane)
{
struct drm_plane_state *state;
struct intel_plane_state *intel_state;
intel_state = kmemdup(plane->state, sizeof(*intel_state), GFP_KERNEL);
if (!intel_state)
return NULL;
state = &intel_state->base;
__drm_atomic_helper_plane_duplicate_state(plane, state);
intel_state->vma = NULL;
intel_state->flags = 0;
return state;
}
/**
* intel_plane_destroy_state - destroy plane state
* @plane: drm plane
* @state: state object to destroy
*
* Destroys the plane state (both common and Intel-specific) for the
* specified plane.
*/
void
intel_plane_destroy_state(struct drm_plane *plane,
struct drm_plane_state *state)
{
WARN_ON(to_intel_plane_state(state)->vma);
drm_atomic_helper_plane_destroy_state(plane, state);
}
int intel_plane_atomic_check_with_state(const struct intel_crtc_state *old_crtc_state,
struct intel_crtc_state *crtc_state,
const struct intel_plane_state *old_plane_state,
struct intel_plane_state *intel_state)
{
struct drm_plane *plane = intel_state->base.plane;
struct drm_i915_private *dev_priv = to_i915(plane->dev);
struct drm_plane_state *state = &intel_state->base;
struct intel_plane *intel_plane = to_intel_plane(plane);
const struct drm_display_mode *adjusted_mode =
&crtc_state->base.adjusted_mode;
int ret;
/*
* Both crtc and plane->crtc could be NULL if we're updating a
* property while the plane is disabled. We don't actually have
* anything driver-specific we need to test in that case, so
* just return success.
*/
if (!intel_state->base.crtc && !old_plane_state->base.crtc)
return 0;
/* Clip all planes to CRTC size, or 0x0 if CRTC is disabled */
intel_state->clip.x1 = 0;
intel_state->clip.y1 = 0;
intel_state->clip.x2 =
crtc_state->base.enable ? crtc_state->pipe_src_w : 0;
intel_state->clip.y2 =
crtc_state->base.enable ? crtc_state->pipe_src_h : 0;
if (state->fb && drm_rotation_90_or_270(state->rotation)) {
struct drm_format_name_buf format_name;
if (state->fb->modifier != I915_FORMAT_MOD_Y_TILED &&
state->fb->modifier != I915_FORMAT_MOD_Yf_TILED) {
DRM_DEBUG_KMS("Y/Yf tiling required for 90/270!\n");
return -EINVAL;
}
/*
* 90/270 is not allowed with RGB64 16:16:16:16,
* RGB 16-bit 5:6:5, and Indexed 8-bit.
* TBD: Add RGB64 case once its added in supported format list.
*/
switch (state->fb->format->format) {
case DRM_FORMAT_C8:
case DRM_FORMAT_RGB565:
DRM_DEBUG_KMS("Unsupported pixel format %s for 90/270!\n",
drm_get_format_name(state->fb->format->format,
&format_name));
return -EINVAL;
default:
break;
}
}
/* CHV ignores the mirror bit when the rotate bit is set :( */
if (IS_CHERRYVIEW(dev_priv) &&
state->rotation & DRM_MODE_ROTATE_180 &&
state->rotation & DRM_MODE_REFLECT_X) {
DRM_DEBUG_KMS("Cannot rotate and reflect at the same time\n");
return -EINVAL;
}
intel_state->base.visible = false;
ret = intel_plane->check_plane(intel_plane, crtc_state, intel_state);
if (ret)
return ret;
/*
* Y-tiling is not supported in IF-ID Interlace mode in
* GEN9 and above.
*/
if (state->fb && INTEL_GEN(dev_priv) >= 9 && crtc_state->base.enable &&
adjusted_mode->flags & DRM_MODE_FLAG_INTERLACE) {
if (state->fb->modifier == I915_FORMAT_MOD_Y_TILED ||
state->fb->modifier == I915_FORMAT_MOD_Yf_TILED) {
DRM_DEBUG_KMS("Y/Yf tiling not supported in IF-ID mode\n");
return -EINVAL;
}
}
/* FIXME pre-g4x don't work like this */
if (intel_state->base.visible)
crtc_state->active_planes |= BIT(intel_plane->id);
else
crtc_state->active_planes &= ~BIT(intel_plane->id);
return intel_plane_atomic_calc_changes(old_crtc_state,
&crtc_state->base,
old_plane_state,
state);
}
static int intel_plane_atomic_check(struct drm_plane *plane,
struct drm_plane_state *new_plane_state)
{
struct drm_atomic_state *state = new_plane_state->state;
const struct drm_plane_state *old_plane_state =
drm_atomic_get_old_plane_state(state, plane);
struct drm_crtc *crtc = new_plane_state->crtc ?: old_plane_state->crtc;
const struct drm_crtc_state *old_crtc_state;
struct drm_crtc_state *new_crtc_state;
/*
* Both crtc and plane->crtc could be NULL if we're updating a
* property while the plane is disabled. We don't actually have
* anything driver-specific we need to test in that case, so
* just return success.
*/
if (!crtc)
return 0;
old_crtc_state = drm_atomic_get_old_crtc_state(state, crtc);
new_crtc_state = drm_atomic_get_new_crtc_state(state, crtc);
return intel_plane_atomic_check_with_state(to_intel_crtc_state(old_crtc_state),
to_intel_crtc_state(new_crtc_state),
to_intel_plane_state(old_plane_state),
to_intel_plane_state(new_plane_state));
}
static void intel_plane_atomic_update(struct drm_plane *plane,
struct drm_plane_state *old_state)
{
struct intel_atomic_state *state = to_intel_atomic_state(old_state->state);
struct intel_plane *intel_plane = to_intel_plane(plane);
const struct intel_plane_state *new_plane_state =
intel_atomic_get_new_plane_state(state, intel_plane);
struct drm_crtc *crtc = new_plane_state->base.crtc ?: old_state->crtc;
if (new_plane_state->base.visible) {
const struct intel_crtc_state *new_crtc_state =
intel_atomic_get_new_crtc_state(state, to_intel_crtc(crtc));
trace_intel_update_plane(plane,
to_intel_crtc(crtc));
intel_plane->update_plane(intel_plane,
new_crtc_state, new_plane_state);
} else {
trace_intel_disable_plane(plane,
to_intel_crtc(crtc));
intel_plane->disable_plane(intel_plane, to_intel_crtc(crtc));
}
}
const struct drm_plane_helper_funcs intel_plane_helper_funcs = {
.prepare_fb = intel_prepare_plane_fb,
.cleanup_fb = intel_cleanup_plane_fb,
.atomic_check = intel_plane_atomic_check,
.atomic_update = intel_plane_atomic_update,
};
/**
* intel_plane_atomic_get_property - fetch plane property value
* @plane: plane to fetch property for
* @state: state containing the property value
* @property: property to look up
* @val: pointer to write property value into
*
* The DRM core does not store shadow copies of properties for
* atomic-capable drivers. This entrypoint is used to fetch
* the current value of a driver-specific plane property.
*/
int
intel_plane_atomic_get_property(struct drm_plane *plane,
const struct drm_plane_state *state,
struct drm_property *property,
uint64_t *val)
{
DRM_DEBUG_KMS("Unknown plane property '%s'\n", property->name);
return -EINVAL;
}
/**
* intel_plane_atomic_set_property - set plane property value
* @plane: plane to set property for
* @state: state to update property value in
* @property: property to set
* @val: value to set property to
*
* Writes the specified property value for a plane into the provided atomic
* state object.
*
* Returns 0 on success, -EINVAL on unrecognized properties
*/
int
intel_plane_atomic_set_property(struct drm_plane *plane,
struct drm_plane_state *state,
struct drm_property *property,
uint64_t val)
{
DRM_DEBUG_KMS("Unknown plane property '%s'\n", property->name);
return -EINVAL;
}