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))))
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)))
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; /* points to i915->drm.pdev->dev */
- 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,
struct drm_private_obj bw_obj;
- struct i915_runtime_pm runtime_pm;
+ struct intel_runtime_pm runtime_pm;
struct {
bool initialized;
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__ */
stack_trace_snprint(buf, sz, entries, nr_entries, 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;
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;
}
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;
}
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;
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;
#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);
}
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);
__intel_wakeref_dec_and_check_tracking(rpm);
}
-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;
*/
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)) {
/*
*/
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);
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)
{
*/
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;
/*
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 */
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,
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;
#include "intel_display.h"
#include "intel_wakeref.h"
+#include "i915_utils.h"
+
+struct device;
struct drm_i915_private;
struct drm_printer;
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; /* points to i915->drm.pdev->dev */
+ 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 intel_runtime_pm_init_early(struct drm_i915_private *dev_priv);
void intel_runtime_pm_enable(struct drm_i915_private *dev_priv);
void intel_runtime_pm_disable(struct drm_i915_private *dev_priv);
#include "i915_reg.h"
struct drm_i915_private;
-struct i915_runtime_pm;
+struct intel_runtime_pm;
struct intel_uncore;
enum forcewake_domain_id {
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. */
projects / kernel.git / commitdiff