Asserts aside, all the code working on this structure is in
intel_runtime_pm.c and uses the intel_ prefix, so move the
structure to intel_runtime_pm.h and adopt the same prefix.
Since all the asserts are now working on the runtime_pm structure,
bring them across as well.
Signed-off-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@xxxxxxxxx>
---
drivers/gpu/drm/i915/i915_debugfs.c | 4 +-
drivers/gpu/drm/i915/i915_drv.c | 4 +-
drivers/gpu/drm/i915/i915_drv.h | 52 +--------
drivers/gpu/drm/i915/intel_drv.h | 97 ----------------
drivers/gpu/drm/i915/intel_runtime_pm.c | 58 +++++-----
drivers/gpu/drm/i915/intel_runtime_pm.h | 147 ++++++++++++++++++++++++
drivers/gpu/drm/i915/intel_uncore.h | 4 +-
7 files changed, 183 insertions(+), 183 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
index 072464a18050..227a1cdf4f02 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -2636,7 +2636,7 @@ static int i915_energy_uJ(struct seq_file *m, void *data)
return 0;
}
-static int i915_runtime_pm_status(struct seq_file *m, void *unused)
+static int intel_runtime_pm_status(struct seq_file *m, void *unused)
{
struct drm_i915_private *dev_priv = node_to_i915(m->private);
struct pci_dev *pdev = dev_priv->drm.pdev;
@@ -4600,7 +4600,7 @@ static const struct drm_info_list i915_debugfs_list[] = {
{"i915_llc", i915_llc, 0},
{"i915_edp_psr_status", i915_edp_psr_status, 0},
{"i915_energy_uJ", i915_energy_uJ, 0},
- {"i915_runtime_pm_status", i915_runtime_pm_status, 0},
+ {"intel_runtime_pm_status", intel_runtime_pm_status, 0},
{"i915_power_domain_info", i915_power_domain_info, 0},
{"i915_dmc_info", i915_dmc_info, 0},
{"i915_display_info", i915_display_info, 0},
diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
index 8b9e5b042e70..7938906f5b1d 100644
--- a/drivers/gpu/drm/i915/i915_drv.c
+++ b/drivers/gpu/drm/i915/i915_drv.c
@@ -2873,7 +2873,7 @@ static int intel_runtime_suspend(struct device *kdev)
struct pci_dev *pdev = to_pci_dev(kdev);
struct drm_device *dev = pci_get_drvdata(pdev);
struct drm_i915_private *dev_priv = to_i915(dev);
- struct i915_runtime_pm *rpm = &dev_priv->runtime_pm;
+ struct intel_runtime_pm *rpm = &dev_priv->runtime_pm;
int ret;
if (WARN_ON_ONCE(!(dev_priv->gt_pm.rc6.enabled && HAS_RC6(dev_priv))))
@@ -2972,7 +2972,7 @@ static int intel_runtime_resume(struct device *kdev)
struct pci_dev *pdev = to_pci_dev(kdev);
struct drm_device *dev = pci_get_drvdata(pdev);
struct drm_i915_private *dev_priv = to_i915(dev);
- struct i915_runtime_pm *rpm = &dev_priv->runtime_pm;
+ struct intel_runtime_pm *rpm = &dev_priv->runtime_pm;
int ret = 0;
if (WARN_ON_ONCE(!HAS_RUNTIME_PM(dev_priv)))
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 474074c7f395..195ba437835f 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -1152,56 +1152,6 @@ struct skl_wm_params {
u32 dbuf_block_size;
};
-/*
- * This struct helps tracking the state needed for runtime PM, which puts the
- * device in PCI D3 state. Notice that when this happens, nothing on the
- * graphics device works, even register access, so we don't get interrupts nor
- * anything else.
- *
- * Every piece of our code that needs to actually touch the hardware needs to
- * either call intel_runtime_pm_get or call intel_display_power_get with the
- * appropriate power domain.
- *
- * Our driver uses the autosuspend delay feature, which means we'll only really
- * suspend if we stay with zero refcount for a certain amount of time. The
- * default value is currently very conservative (see intel_runtime_pm_enable), but
- * it can be changed with the standard runtime PM files from sysfs.
- *
- * The irqs_disabled variable becomes true exactly after we disable the IRQs and
- * goes back to false exactly before we reenable the IRQs. We use this variable
- * to check if someone is trying to enable/disable IRQs while they're supposed
- * to be disabled. This shouldn't happen and we'll print some error messages in
- * case it happens.
- *
- * For more, read the Documentation/power/runtime_pm.txt.
- */
-struct i915_runtime_pm {
- atomic_t wakeref_count;
- struct device *kdev;
- bool available;
- bool suspended;
- bool irqs_enabled;
-
-#if IS_ENABLED(CONFIG_DRM_I915_DEBUG_RUNTIME_PM)
- /*
- * To aide detection of wakeref leaks and general misuse, we
- * track all wakeref holders. With manual markup (i.e. returning
- * a cookie to each rpm_get caller which they then supply to their
- * paired rpm_put) we can remove corresponding pairs of and keep
- * the array trimmed to active wakerefs.
- */
- struct intel_runtime_pm_debug {
- spinlock_t lock;
-
- depot_stack_handle_t last_acquire;
- depot_stack_handle_t last_release;
-
- depot_stack_handle_t *owners;
- unsigned long count;
- } debug;
-#endif
-};
-
enum intel_pipe_crc_source {
INTEL_PIPE_CRC_SOURCE_NONE,
INTEL_PIPE_CRC_SOURCE_PLANE1,
@@ -1843,7 +1793,7 @@ struct drm_i915_private {
} type;
} dram_info;
- struct i915_runtime_pm runtime_pm;
+ struct intel_runtime_pm runtime_pm;
struct {
bool initialized;
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index 6976d92b0bd8..178f1d123a13 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -1619,101 +1619,4 @@ unsigned int i9xx_plane_max_stride(struct intel_plane *plane,
unsigned int rotation);
int bdw_get_pipemisc_bpp(struct intel_crtc *crtc);
-/* intel_runtime_pm.c */
-#define BITS_PER_WAKEREF \
- BITS_PER_TYPE(struct_member(struct i915_runtime_pm, wakeref_count))
-#define INTEL_RPM_WAKELOCK_SHIFT (BITS_PER_WAKEREF / 2)
-#define INTEL_RPM_WAKELOCK_BIAS (1 << INTEL_RPM_WAKELOCK_SHIFT)
-#define INTEL_RPM_RAW_WAKEREF_MASK (INTEL_RPM_WAKELOCK_BIAS - 1)
-
-static inline int
-intel_rpm_raw_wakeref_count(int wakeref_count)
-{
- return wakeref_count & INTEL_RPM_RAW_WAKEREF_MASK;
-}
-
-static inline int
-intel_rpm_wakelock_count(int wakeref_count)
-{
- return wakeref_count >> INTEL_RPM_WAKELOCK_SHIFT;
-}
-
-static inline void
-assert_rpm_device_not_suspended(struct i915_runtime_pm *rpm)
-{
- WARN_ONCE(rpm->suspended,
- "Device suspended during HW access\n");
-}
-
-static inline void
-__assert_rpm_raw_wakeref_held(struct i915_runtime_pm *rpm, int wakeref_count)
-{
- assert_rpm_device_not_suspended(rpm);
- WARN_ONCE(!intel_rpm_raw_wakeref_count(wakeref_count),
- "RPM raw-wakeref not held\n");
-}
-
-static inline void
-__assert_rpm_wakelock_held(struct i915_runtime_pm *rpm, int wakeref_count)
-{
- __assert_rpm_raw_wakeref_held(rpm, wakeref_count);
- WARN_ONCE(!intel_rpm_wakelock_count(wakeref_count),
- "RPM wakelock ref not held during HW access\n");
-}
-
-static inline void
-assert_rpm_raw_wakeref_held(struct i915_runtime_pm *rpm)
-{
- __assert_rpm_raw_wakeref_held(rpm, atomic_read(&rpm->wakeref_count));
-}
-
-static inline void
-assert_rpm_wakelock_held(struct i915_runtime_pm *rpm)
-{
- __assert_rpm_wakelock_held(rpm, atomic_read(&rpm->wakeref_count));
-}
-
-/**
- * disable_rpm_wakeref_asserts - disable the RPM assert checks
- * @rpm: the i915_runtime_pm structure
- *
- * This function disable asserts that check if we hold an RPM wakelock
- * reference, while keeping the device-not-suspended checks still enabled.
- * It's meant to be used only in special circumstances where our rule about
- * the wakelock refcount wrt. the device power state doesn't hold. According
- * to this rule at any point where we access the HW or want to keep the HW in
- * an active state we must hold an RPM wakelock reference acquired via one of
- * the intel_runtime_pm_get() helpers. Currently there are a few special spots
- * where this rule doesn't hold: the IRQ and suspend/resume handlers, the
- * forcewake release timer, and the GPU RPS and hangcheck works. All other
- * users should avoid using this function.
- *
- * Any calls to this function must have a symmetric call to
- * enable_rpm_wakeref_asserts().
- */
-static inline void
-disable_rpm_wakeref_asserts(struct i915_runtime_pm *rpm)
-{
- atomic_add(INTEL_RPM_WAKELOCK_BIAS + 1,
- &rpm->wakeref_count);
-}
-
-/**
- * enable_rpm_wakeref_asserts - re-enable the RPM assert checks
- * @rpm: the i915_runtime_pm structure
- *
- * This function re-enables the RPM assert checks after disabling them with
- * disable_rpm_wakeref_asserts. It's meant to be used only in special
- * circumstances otherwise its use should be avoided.
- *
- * Any calls to this function must have a symmetric call to
- * disable_rpm_wakeref_asserts().
- */
-static inline void
-enable_rpm_wakeref_asserts(struct i915_runtime_pm *rpm)
-{
- atomic_sub(INTEL_RPM_WAKELOCK_BIAS + 1,
- &rpm->wakeref_count);
-}
-
#endif /* __INTEL_DRV_H__ */
diff --git a/drivers/gpu/drm/i915/intel_runtime_pm.c b/drivers/gpu/drm/i915/intel_runtime_pm.c
index 271153fd3a33..f669688c32c9 100644
--- a/drivers/gpu/drm/i915/intel_runtime_pm.c
+++ b/drivers/gpu/drm/i915/intel_runtime_pm.c
@@ -60,16 +60,16 @@
* present for a given platform.
*/
-static intel_wakeref_t intel_runtime_pm_get_raw(struct i915_runtime_pm *rpm);
+static intel_wakeref_t intel_runtime_pm_get_raw(struct intel_runtime_pm *rpm);
static void
-__intel_runtime_pm_put(struct i915_runtime_pm *rpm, intel_wakeref_t wref,
+__intel_runtime_pm_put(struct intel_runtime_pm *rpm, intel_wakeref_t wref,
bool wakelock);
#if IS_ENABLED(CONFIG_DRM_I915_DEBUG_RUNTIME_PM)
static void
-intel_runtime_pm_put_raw(struct i915_runtime_pm *rpm, intel_wakeref_t wref);
+intel_runtime_pm_put_raw(struct intel_runtime_pm *rpm, intel_wakeref_t wref);
#else
-static inline void intel_runtime_pm_put_raw(struct i915_runtime_pm *rpm,
+static inline void intel_runtime_pm_put_raw(struct intel_runtime_pm *rpm,
intel_wakeref_t wref)
{
__intel_runtime_pm_put(rpm, -1, false);
@@ -112,13 +112,13 @@ static void __print_depot_stack(depot_stack_handle_t stack,
snprint_stack_trace(buf, sz, &trace, indent);
}
-static void init_intel_runtime_pm_wakeref(struct i915_runtime_pm *rpm)
+static void init_intel_runtime_pm_wakeref(struct intel_runtime_pm *rpm)
{
spin_lock_init(&rpm->debug.lock);
}
static noinline depot_stack_handle_t
-track_intel_runtime_pm_wakeref(struct i915_runtime_pm *rpm)
+track_intel_runtime_pm_wakeref(struct intel_runtime_pm *rpm)
{
depot_stack_handle_t stack, *stacks;
unsigned long flags;
@@ -150,7 +150,7 @@ track_intel_runtime_pm_wakeref(struct i915_runtime_pm *rpm)
return stack;
}
-static void untrack_intel_runtime_pm_wakeref(struct i915_runtime_pm *rpm,
+static void untrack_intel_runtime_pm_wakeref(struct intel_runtime_pm *rpm,
depot_stack_handle_t stack)
{
unsigned long flags, n;
@@ -270,7 +270,7 @@ dump_and_free_wakeref_tracking(struct intel_runtime_pm_debug *debug)
}
static noinline void
-__intel_wakeref_dec_and_check_tracking(struct i915_runtime_pm *rpm)
+__intel_wakeref_dec_and_check_tracking(struct intel_runtime_pm *rpm)
{
struct intel_runtime_pm_debug dbg = {};
unsigned long flags;
@@ -287,7 +287,7 @@ __intel_wakeref_dec_and_check_tracking(struct i915_runtime_pm *rpm)
}
static noinline void
-untrack_all_intel_runtime_pm_wakerefs(struct i915_runtime_pm *rpm)
+untrack_all_intel_runtime_pm_wakerefs(struct intel_runtime_pm *rpm)
{
struct intel_runtime_pm_debug dbg = {};
unsigned long flags;
@@ -305,7 +305,7 @@ void print_intel_runtime_pm_wakeref(struct drm_i915_private *i915,
struct intel_runtime_pm_debug dbg = {};
do {
- struct i915_runtime_pm *rpm = &i915->runtime_pm;
+ struct intel_runtime_pm *rpm = &i915->runtime_pm;
unsigned long alloc = dbg.count;
depot_stack_handle_t *s;
@@ -339,36 +339,36 @@ void print_intel_runtime_pm_wakeref(struct drm_i915_private *i915,
#else
-static void init_intel_runtime_pm_wakeref(struct i915_runtime_pm *rpm)
+static void init_intel_runtime_pm_wakeref(struct intel_runtime_pm *rpm)
{
}
static depot_stack_handle_t
-track_intel_runtime_pm_wakeref(struct i915_runtime_pm *rpm)
+track_intel_runtime_pm_wakeref(struct intel_runtime_pm *rpm)
{
return -1;
}
-static void untrack_intel_runtime_pm_wakeref(struct i915_runtime_pm *rpm,
+static void untrack_intel_runtime_pm_wakeref(struct intel_runtime_pm *rpm,
intel_wakeref_t wref)
{
}
static void
-__intel_wakeref_dec_and_check_tracking(struct i915_runtime_pm *rpm)
+__intel_wakeref_dec_and_check_tracking(struct intel_runtime_pm *rpm)
{
atomic_dec(&rpm->wakeref_count);
}
static void
-untrack_all_intel_runtime_pm_wakerefs(struct i915_runtime_pm *rpm)
+untrack_all_intel_runtime_pm_wakerefs(struct intel_runtime_pm *rpm)
{
}
#endif
static void
-intel_runtime_pm_acquire(struct i915_runtime_pm *rpm, bool wakelock)
+intel_runtime_pm_acquire(struct intel_runtime_pm *rpm, bool wakelock)
{
if (wakelock) {
atomic_add(1 + INTEL_RPM_WAKELOCK_BIAS, &rpm->wakeref_count);
@@ -380,7 +380,7 @@ intel_runtime_pm_acquire(struct i915_runtime_pm *rpm, bool wakelock)
}
static void
-intel_runtime_pm_release(struct i915_runtime_pm *rpm, int wakelock)
+intel_runtime_pm_release(struct intel_runtime_pm *rpm, int wakelock)
{
if (wakelock) {
assert_rpm_wakelock_held(rpm);
@@ -2209,7 +2209,7 @@ intel_display_power_put_async_work(struct work_struct *work)
container_of(work, struct drm_i915_private,
power_domains.async_put_work.work);
struct i915_power_domains *power_domains = &dev_priv->power_domains;
- struct i915_runtime_pm *rpm = &dev_priv->runtime_pm;
+ struct intel_runtime_pm *rpm = &dev_priv->runtime_pm;
intel_wakeref_t new_work_wakeref = intel_runtime_pm_get_raw(rpm);
intel_wakeref_t old_work_wakeref = 0;
@@ -2260,7 +2260,7 @@ void __intel_display_power_put_async(struct drm_i915_private *i915,
intel_wakeref_t wakeref)
{
struct i915_power_domains *power_domains = &i915->power_domains;
- struct i915_runtime_pm *rpm = &i915->runtime_pm;
+ struct intel_runtime_pm *rpm = &i915->runtime_pm;
intel_wakeref_t work_wakeref = intel_runtime_pm_get_raw(rpm);
mutex_lock(&power_domains->lock);
@@ -4988,7 +4988,7 @@ static void intel_power_domains_verify_state(struct drm_i915_private *i915)
#endif
-static intel_wakeref_t __intel_runtime_pm_get(struct i915_runtime_pm *rpm,
+static intel_wakeref_t __intel_runtime_pm_get(struct intel_runtime_pm *rpm,
bool wakelock)
{
int ret;
@@ -5001,7 +5001,7 @@ static intel_wakeref_t __intel_runtime_pm_get(struct i915_runtime_pm *rpm,
return track_intel_runtime_pm_wakeref(rpm);
}
-static intel_wakeref_t intel_runtime_pm_get_raw(struct i915_runtime_pm *rpm)
+static intel_wakeref_t intel_runtime_pm_get_raw(struct intel_runtime_pm *rpm)
{
return __intel_runtime_pm_get(rpm, false);
}
@@ -5039,7 +5039,7 @@ intel_wakeref_t intel_runtime_pm_get(struct drm_i915_private *i915)
*/
intel_wakeref_t intel_runtime_pm_get_if_in_use(struct drm_i915_private *i915)
{
- struct i915_runtime_pm *rpm = &i915->runtime_pm;
+ struct intel_runtime_pm *rpm = &i915->runtime_pm;
if (IS_ENABLED(CONFIG_PM)) {
/*
@@ -5078,7 +5078,7 @@ intel_wakeref_t intel_runtime_pm_get_if_in_use(struct drm_i915_private *i915)
*/
intel_wakeref_t intel_runtime_pm_get_noresume(struct drm_i915_private *i915)
{
- struct i915_runtime_pm *rpm = &i915->runtime_pm;
+ struct intel_runtime_pm *rpm = &i915->runtime_pm;
assert_rpm_wakelock_held(rpm);
pm_runtime_get_noresume(rpm->kdev);
@@ -5088,7 +5088,7 @@ intel_wakeref_t intel_runtime_pm_get_noresume(struct drm_i915_private *i915)
return track_intel_runtime_pm_wakeref(rpm);
}
-static void __intel_runtime_pm_put(struct i915_runtime_pm *rpm,
+static void __intel_runtime_pm_put(struct intel_runtime_pm *rpm,
intel_wakeref_t wref,
bool wakelock)
{
@@ -5104,7 +5104,7 @@ static void __intel_runtime_pm_put(struct i915_runtime_pm *rpm,
#if IS_ENABLED(CONFIG_DRM_I915_DEBUG_RUNTIME_PM)
static void
-intel_runtime_pm_put_raw(struct i915_runtime_pm *rpm, intel_wakeref_t wref)
+intel_runtime_pm_put_raw(struct intel_runtime_pm *rpm, intel_wakeref_t wref)
{
__intel_runtime_pm_put(rpm, wref, false);
}
@@ -5155,7 +5155,7 @@ void intel_runtime_pm_put(struct drm_i915_private *i915, intel_wakeref_t wref)
*/
void intel_runtime_pm_enable(struct drm_i915_private *i915)
{
- struct i915_runtime_pm *rpm = &i915->runtime_pm;
+ struct intel_runtime_pm *rpm = &i915->runtime_pm;
struct device *kdev = rpm->kdev;
/*
@@ -5197,7 +5197,7 @@ void intel_runtime_pm_enable(struct drm_i915_private *i915)
void intel_runtime_pm_disable(struct drm_i915_private *i915)
{
- struct i915_runtime_pm *rpm = &i915->runtime_pm;
+ struct intel_runtime_pm *rpm = &i915->runtime_pm;
struct device *kdev = rpm->kdev;
/* Transfer rpm ownership back to core */
@@ -5212,7 +5212,7 @@ void intel_runtime_pm_disable(struct drm_i915_private *i915)
void intel_runtime_pm_cleanup(struct drm_i915_private *i915)
{
- struct i915_runtime_pm *rpm = &i915->runtime_pm;
+ struct intel_runtime_pm *rpm = &i915->runtime_pm;
int count = atomic_read(&rpm->wakeref_count);
WARN(count,
@@ -5225,7 +5225,7 @@ void intel_runtime_pm_cleanup(struct drm_i915_private *i915)
void intel_runtime_pm_init_early(struct drm_i915_private *i915)
{
- struct i915_runtime_pm *rpm = &i915->runtime_pm;
+ struct intel_runtime_pm *rpm = &i915->runtime_pm;
struct pci_dev *pdev = i915->drm.pdev;
struct device *kdev = &pdev->dev;
diff --git a/drivers/gpu/drm/i915/intel_runtime_pm.h b/drivers/gpu/drm/i915/intel_runtime_pm.h
index b964ca7af9c8..0e3817f9785e 100644
--- a/drivers/gpu/drm/i915/intel_runtime_pm.h
+++ b/drivers/gpu/drm/i915/intel_runtime_pm.h
@@ -6,6 +6,7 @@
#ifndef __INTEL_RUNTIME_PM_H__
#define __INTEL_RUNTIME_PM_H__
+#include <linux/device.h>
#include <linux/stackdepot.h>
#include <linux/types.h>
@@ -19,6 +20,152 @@ enum i915_drm_suspend_mode {
I915_DRM_SUSPEND_HIBERNATE,
};
+/*
+ * This struct helps tracking the state needed for runtime PM, which puts the
+ * device in PCI D3 state. Notice that when this happens, nothing on the
+ * graphics device works, even register access, so we don't get interrupts nor
+ * anything else.
+ *
+ * Every piece of our code that needs to actually touch the hardware needs to
+ * either call intel_runtime_pm_get or call intel_display_power_get with the
+ * appropriate power domain.
+ *
+ * Our driver uses the autosuspend delay feature, which means we'll only really
+ * suspend if we stay with zero refcount for a certain amount of time. The
+ * default value is currently very conservative (see intel_runtime_pm_enable), but
+ * it can be changed with the standard runtime PM files from sysfs.
+ *
+ * The irqs_disabled variable becomes true exactly after we disable the IRQs and
+ * goes back to false exactly before we reenable the IRQs. We use this variable
+ * to check if someone is trying to enable/disable IRQs while they're supposed
+ * to be disabled. This shouldn't happen and we'll print some error messages in
+ * case it happens.
+ *
+ * For more, read the Documentation/power/runtime_pm.txt.
+ */
+struct intel_runtime_pm {
+ atomic_t wakeref_count;
+ struct device *kdev;
+ bool available;
+ bool suspended;
+ bool irqs_enabled;
+
+#if IS_ENABLED(CONFIG_DRM_I915_DEBUG_RUNTIME_PM)
+ /*
+ * To aide detection of wakeref leaks and general misuse, we
+ * track all wakeref holders. With manual markup (i.e. returning
+ * a cookie to each rpm_get caller which they then supply to their
+ * paired rpm_put) we can remove corresponding pairs of and keep
+ * the array trimmed to active wakerefs.
+ */
+ struct intel_runtime_pm_debug {
+ spinlock_t lock;
+
+ depot_stack_handle_t last_acquire;
+ depot_stack_handle_t last_release;
+
+ depot_stack_handle_t *owners;
+ unsigned long count;
+ } debug;
+#endif
+};
+
+#define BITS_PER_WAKEREF \
+ BITS_PER_TYPE(struct_member(struct intel_runtime_pm, wakeref_count))
+#define INTEL_RPM_WAKELOCK_SHIFT (BITS_PER_WAKEREF / 2)
+#define INTEL_RPM_WAKELOCK_BIAS (1 << INTEL_RPM_WAKELOCK_SHIFT)
+#define INTEL_RPM_RAW_WAKEREF_MASK (INTEL_RPM_WAKELOCK_BIAS - 1)
+
+static inline int
+intel_rpm_raw_wakeref_count(int wakeref_count)
+{
+ return wakeref_count & INTEL_RPM_RAW_WAKEREF_MASK;
+}
+
+static inline int
+intel_rpm_wakelock_count(int wakeref_count)
+{
+ return wakeref_count >> INTEL_RPM_WAKELOCK_SHIFT;
+}
+
+static inline void
+assert_rpm_device_not_suspended(struct intel_runtime_pm *rpm)
+{
+ WARN_ONCE(rpm->suspended,
+ "Device suspended during HW access\n");
+}
+
+static inline void
+__assert_rpm_raw_wakeref_held(struct intel_runtime_pm *rpm, int wakeref_count)
+{
+ assert_rpm_device_not_suspended(rpm);
+ WARN_ONCE(!intel_rpm_raw_wakeref_count(wakeref_count),
+ "RPM raw-wakeref not held\n");
+}
+
+static inline void
+__assert_rpm_wakelock_held(struct intel_runtime_pm *rpm, int wakeref_count)
+{
+ __assert_rpm_raw_wakeref_held(rpm, wakeref_count);
+ WARN_ONCE(!intel_rpm_wakelock_count(wakeref_count),
+ "RPM wakelock ref not held during HW access\n");
+}
+
+static inline void
+assert_rpm_raw_wakeref_held(struct intel_runtime_pm *rpm)
+{
+ __assert_rpm_raw_wakeref_held(rpm, atomic_read(&rpm->wakeref_count));
+}
+
+static inline void
+assert_rpm_wakelock_held(struct intel_runtime_pm *rpm)
+{
+ __assert_rpm_wakelock_held(rpm, atomic_read(&rpm->wakeref_count));
+}
+
+/**
+ * disable_rpm_wakeref_asserts - disable the RPM assert checks
+ * @rpm: the intel_runtime_pm structure
+ *
+ * This function disable asserts that check if we hold an RPM wakelock
+ * reference, while keeping the device-not-suspended checks still enabled.
+ * It's meant to be used only in special circumstances where our rule about
+ * the wakelock refcount wrt. the device power state doesn't hold. According
+ * to this rule at any point where we access the HW or want to keep the HW in
+ * an active state we must hold an RPM wakelock reference acquired via one of
+ * the intel_runtime_pm_get() helpers. Currently there are a few special spots
+ * where this rule doesn't hold: the IRQ and suspend/resume handlers, the
+ * forcewake release timer, and the GPU RPS and hangcheck works. All other
+ * users should avoid using this function.
+ *
+ * Any calls to this function must have a symmetric call to
+ * enable_rpm_wakeref_asserts().
+ */
+static inline void
+disable_rpm_wakeref_asserts(struct intel_runtime_pm *rpm)
+{
+ atomic_add(INTEL_RPM_WAKELOCK_BIAS + 1,
+ &rpm->wakeref_count);
+}
+
+/**
+ * enable_rpm_wakeref_asserts - re-enable the RPM assert checks
+ * @rpm: the intel_runtime_pm structure
+ *
+ * This function re-enables the RPM assert checks after disabling them with
+ * disable_rpm_wakeref_asserts. It's meant to be used only in special
+ * circumstances otherwise its use should be avoided.
+ *
+ * Any calls to this function must have a symmetric call to
+ * disable_rpm_wakeref_asserts().
+ */
+static inline void
+enable_rpm_wakeref_asserts(struct intel_runtime_pm *rpm)
+{
+ atomic_sub(INTEL_RPM_WAKELOCK_BIAS + 1,
+ &rpm->wakeref_count);
+}
+
void skl_enable_dc6(struct drm_i915_private *dev_priv);
void gen9_sanitize_dc_state(struct drm_i915_private *dev_priv);
void bxt_enable_dc9(struct drm_i915_private *dev_priv);
diff --git a/drivers/gpu/drm/i915/intel_uncore.h b/drivers/gpu/drm/i915/intel_uncore.h
index d6af3de70121..804a0faacc91 100644
--- a/drivers/gpu/drm/i915/intel_uncore.h
+++ b/drivers/gpu/drm/i915/intel_uncore.h
@@ -33,7 +33,7 @@
#include "i915_reg.h"
struct drm_i915_private;
-struct i915_runtime_pm;
+struct intel_runtime_pm;
struct intel_uncore;
enum forcewake_domain_id {
@@ -97,7 +97,7 @@ struct intel_forcewake_range {
struct intel_uncore {
void __iomem *regs;
- struct i915_runtime_pm *rpm;
+ struct intel_runtime_pm *rpm;
spinlock_t lock; /** lock is also taken in irq contexts. */
--
2.20.1
_______________________________________________
Intel-gfx mailing list
Intel-gfx@xxxxxxxxxxxxxxxxxxxxx
https://lists.freedesktop.org/mailman/listinfo/intel-gfx
