mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-23 09:19:51 +00:00
![Thomas Hellström](/assets/img/avatar_default.png)
As we're about to add more ww-related functionality, break out the dma_resv ww locking utilities to their own files Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com> Reviewed-by: Matthew Auld <matthew.auld@intel.com> Signed-off-by: Matthew Auld <matthew.auld@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20210617063018.92802-3-thomas.hellstrom@linux.intel.com
126 lines
3.7 KiB
C
126 lines
3.7 KiB
C
/*
|
|
* Copyright © 2016 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.
|
|
*
|
|
*/
|
|
|
|
#ifndef __I915_GEM_H__
|
|
#define __I915_GEM_H__
|
|
|
|
#include <linux/bug.h>
|
|
#include <linux/interrupt.h>
|
|
|
|
#include <drm/drm_drv.h>
|
|
|
|
#include "i915_utils.h"
|
|
|
|
struct drm_i915_private;
|
|
|
|
#ifdef CONFIG_DRM_I915_DEBUG_GEM
|
|
|
|
#define GEM_SHOW_DEBUG() drm_debug_enabled(DRM_UT_DRIVER)
|
|
|
|
#ifdef CONFIG_DRM_I915_DEBUG_GEM_ONCE
|
|
#define __GEM_BUG(cond) BUG()
|
|
#else
|
|
#define __GEM_BUG(cond) \
|
|
WARN(1, "%s:%d GEM_BUG_ON(%s)\n", __func__, __LINE__, __stringify(cond))
|
|
#endif
|
|
|
|
#define GEM_BUG_ON(condition) do { if (unlikely((condition))) { \
|
|
GEM_TRACE_ERR("%s:%d GEM_BUG_ON(%s)\n", \
|
|
__func__, __LINE__, __stringify(condition)); \
|
|
GEM_TRACE_DUMP(); \
|
|
__GEM_BUG(condition); \
|
|
} \
|
|
} while(0)
|
|
#define GEM_WARN_ON(expr) WARN_ON(expr)
|
|
|
|
#define GEM_DEBUG_DECL(var) var
|
|
#define GEM_DEBUG_EXEC(expr) expr
|
|
#define GEM_DEBUG_BUG_ON(expr) GEM_BUG_ON(expr)
|
|
#define GEM_DEBUG_WARN_ON(expr) GEM_WARN_ON(expr)
|
|
|
|
#else
|
|
|
|
#define GEM_SHOW_DEBUG() (0)
|
|
|
|
#define GEM_BUG_ON(expr) BUILD_BUG_ON_INVALID(expr)
|
|
#define GEM_WARN_ON(expr) ({ unlikely(!!(expr)); })
|
|
|
|
#define GEM_DEBUG_DECL(var)
|
|
#define GEM_DEBUG_EXEC(expr) do { } while (0)
|
|
#define GEM_DEBUG_BUG_ON(expr)
|
|
#define GEM_DEBUG_WARN_ON(expr) ({ BUILD_BUG_ON_INVALID(expr); 0; })
|
|
#endif
|
|
|
|
#if IS_ENABLED(CONFIG_DRM_I915_TRACE_GEM)
|
|
#define GEM_TRACE(...) trace_printk(__VA_ARGS__)
|
|
#define GEM_TRACE_ERR(...) do { \
|
|
pr_err(__VA_ARGS__); \
|
|
trace_printk(__VA_ARGS__); \
|
|
} while (0)
|
|
#define GEM_TRACE_DUMP() \
|
|
do { ftrace_dump(DUMP_ALL); __add_taint_for_CI(TAINT_WARN); } while (0)
|
|
#define GEM_TRACE_DUMP_ON(expr) \
|
|
do { if (expr) GEM_TRACE_DUMP(); } while (0)
|
|
#else
|
|
#define GEM_TRACE(...) do { } while (0)
|
|
#define GEM_TRACE_ERR(...) do { } while (0)
|
|
#define GEM_TRACE_DUMP() do { } while (0)
|
|
#define GEM_TRACE_DUMP_ON(expr) BUILD_BUG_ON_INVALID(expr)
|
|
#endif
|
|
|
|
#define I915_GEM_IDLE_TIMEOUT (HZ / 5)
|
|
|
|
static inline void tasklet_lock(struct tasklet_struct *t)
|
|
{
|
|
while (!tasklet_trylock(t))
|
|
cpu_relax();
|
|
}
|
|
|
|
static inline bool tasklet_is_locked(const struct tasklet_struct *t)
|
|
{
|
|
return test_bit(TASKLET_STATE_RUN, &t->state);
|
|
}
|
|
|
|
static inline void __tasklet_disable_sync_once(struct tasklet_struct *t)
|
|
{
|
|
if (!atomic_fetch_inc(&t->count))
|
|
tasklet_unlock_spin_wait(t);
|
|
}
|
|
|
|
static inline bool __tasklet_is_enabled(const struct tasklet_struct *t)
|
|
{
|
|
return !atomic_read(&t->count);
|
|
}
|
|
|
|
static inline bool __tasklet_enable(struct tasklet_struct *t)
|
|
{
|
|
return atomic_dec_and_test(&t->count);
|
|
}
|
|
|
|
static inline bool __tasklet_is_scheduled(struct tasklet_struct *t)
|
|
{
|
|
return test_bit(TASKLET_STATE_SCHED, &t->state);
|
|
}
|
|
|
|
#endif /* __I915_GEM_H__ */
|