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There are important fixes for VLV with MIPI/DSI panels,

Browse Source 
2 clean-up patches needed for this MIPI/DSI fix,
 and many fixes for GEM including fixes for Perf OA and PMU,
 and fixes on scheduler and preemption.
 
 This also includes GVT fixes: "This has one to fix GTT mmio 8b
 access from guest and two simple ones for mmio switch and typo fix"
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Merge tag 'drm-intel-fixes-2018-02-14-1' of git://anongit.freedesktop.org/drm/drm-intel into drm-fixes

There are important fixes for VLV with MIPI/DSI panels,
2 clean-up patches needed for this MIPI/DSI fix,
and many fixes for GEM including fixes for Perf OA and PMU,
and fixes on scheduler and preemption.

This also includes GVT fixes: "This has one to fix GTT mmio 8b
access from guest and two simple ones for mmio switch and typo fix"

* tag 'drm-intel-fixes-2018-02-14-1' of git://anongit.freedesktop.org/drm/drm-intel:
  drm/i915: Fix DSI panels with v1 MIPI sequences without a DEASSERT sequence v3
  drm/i915: Free memdup-ed DSI VBT data structures on driver_unload
  drm/i915: Add intel_bios_cleanup() function
  drm/i915/vlv: Add cdclk workaround for DSI
  drm/i915/gvt: fix one typo of render_mmio trace
  drm/i915/gvt: Support BAR0 8-byte reads/writes
  drm/i915/gvt: add 0xe4f0 into gen9 render list
  drm/i915/pmu: Fix building without CONFIG_PM
  drm/i915/pmu: Fix sleep under atomic in RC6 readout
  drm/i915/pmu: Fix PMU enable vs execlists tasklet race
  drm/i915: Lock out execlist tasklet while peeking inside for busy-stats
  drm/i915/breadcrumbs: Ignore unsubmitted signalers
  drm/i915: Don't wake the device up to check if the engine is asleep
  drm/i915: Avoid truncation before clamping userspace's priority value
  drm/i915/perf: Fix compiler warning for string truncation
  drm/i915/perf: Fix compiler warning for string truncation
This commit is contained in:
Dave Airlie 2018-02-16 12:33:03 +10:00
commit 8d3c629439
15 changed files with 348 additions and 153 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

51
drivers/gpu/drm/i915/gvt/kvmgt.c
View File

@ -733,6 +733,25 @@ static ssize_t intel_vgpu_rw(struct mdev_device *mdev, char *buf,
return ret == 0 ? count : ret;
}
static bool gtt_entry(struct mdev_device *mdev, loff_t *ppos)
{
struct intel_vgpu *vgpu = mdev_get_drvdata(mdev);
unsigned int index = VFIO_PCI_OFFSET_TO_INDEX(*ppos);
struct intel_gvt *gvt = vgpu->gvt;
int offset;
/* Only allow MMIO GGTT entry access */
if (index != PCI_BASE_ADDRESS_0)
return false;
offset = (u64)(*ppos & VFIO_PCI_OFFSET_MASK) -
intel_vgpu_get_bar_gpa(vgpu, PCI_BASE_ADDRESS_0);
return (offset >= gvt->device_info.gtt_start_offset &&
offset < gvt->device_info.gtt_start_offset + gvt_ggtt_sz(gvt)) ?
true : false;
}
static ssize_t intel_vgpu_read(struct mdev_device *mdev, char __user *buf,
size_t count, loff_t *ppos)
{
@ -742,7 +761,21 @@ static ssize_t intel_vgpu_read(struct mdev_device *mdev, char __user *buf,
while (count) {
size_t filled;
if (count >= 4 && !(*ppos % 4)) {
/* Only support GGTT entry 8 bytes read */
if (count >= 8 && !(*ppos % 8) &&
gtt_entry(mdev, ppos)) {
u64 val;
ret = intel_vgpu_rw(mdev, (char *)&val, sizeof(val),
ppos, false);
if (ret <= 0)
goto read_err;
if (copy_to_user(buf, &val, sizeof(val)))
goto read_err;
filled = 8;
} else if (count >= 4 && !(*ppos % 4)) {
u32 val;
ret = intel_vgpu_rw(mdev, (char *)&val, sizeof(val),
@ -802,7 +835,21 @@ static ssize_t intel_vgpu_write(struct mdev_device *mdev,
while (count) {
size_t filled;
if (count >= 4 && !(*ppos % 4)) {
/* Only support GGTT entry 8 bytes write */
if (count >= 8 && !(*ppos % 8) &&
gtt_entry(mdev, ppos)) {
u64 val;
if (copy_from_user(&val, buf, sizeof(val)))
goto write_err;
ret = intel_vgpu_rw(mdev, (char *)&val, sizeof(val),
ppos, true);
if (ret <= 0)
goto write_err;
filled = 8;
} else if (count >= 4 && !(*ppos % 4)) {
u32 val;
if (copy_from_user(&val, buf, sizeof(val)))

1
drivers/gpu/drm/i915/gvt/mmio_context.c
View File

@ -118,6 +118,7 @@ static struct engine_mmio gen9_engine_mmio_list[] __cacheline_aligned = {
{RCS, HALF_SLICE_CHICKEN3, 0xffff, true}, /* 0xe184 */
{RCS, GEN9_HALF_SLICE_CHICKEN5, 0xffff, true}, /* 0xe188 */
{RCS, GEN9_HALF_SLICE_CHICKEN7, 0xffff, true}, /* 0xe194 */
{RCS, GEN8_ROW_CHICKEN, 0xffff, true}, /* 0xe4f0 */
{RCS, TRVATTL3PTRDW(0), 0, false}, /* 0x4de0 */
{RCS, TRVATTL3PTRDW(1), 0, false}, /* 0x4de4 */
{RCS, TRNULLDETCT, 0, false}, /* 0x4de8 */

2
drivers/gpu/drm/i915/gvt/trace.h
View File

@ -333,7 +333,7 @@ TRACE_EVENT(render_mmio,
TP_PROTO(int old_id, int new_id, char *action, unsigned int reg,
unsigned int old_val, unsigned int new_val),
TP_ARGS(old_id, new_id, action, reg, new_val, old_val),
TP_ARGS(old_id, new_id, action, reg, old_val, new_val),
TP_STRUCT__entry(
__field(int, old_id)

14
drivers/gpu/drm/i915/i915_drv.c
View File

@ -1433,19 +1433,7 @@ void i915_driver_unload(struct drm_device *dev)
intel_modeset_cleanup(dev);
/*
* free the memory space allocated for the child device
* config parsed from VBT
*/
if (dev_priv->vbt.child_dev && dev_priv->vbt.child_dev_num) {
kfree(dev_priv->vbt.child_dev);
dev_priv->vbt.child_dev = NULL;
dev_priv->vbt.child_dev_num = 0;
}
kfree(dev_priv->vbt.sdvo_lvds_vbt_mode);
dev_priv->vbt.sdvo_lvds_vbt_mode = NULL;
kfree(dev_priv->vbt.lfp_lvds_vbt_mode);
dev_priv->vbt.lfp_lvds_vbt_mode = NULL;
intel_bios_cleanup(dev_priv);
vga_switcheroo_unregister_client(pdev);
vga_client_register(pdev, NULL, NULL, NULL);

2
drivers/gpu/drm/i915/i915_drv.h
View File

@ -1349,6 +1349,7 @@ struct intel_vbt_data {
u32 size;
u8 *data;
const u8 *sequence[MIPI_SEQ_MAX];
u8 *deassert_seq; /* Used by fixup_mipi_sequences() */
} dsi;
int crt_ddc_pin;
@ -3657,6 +3658,7 @@ extern void intel_i2c_reset(struct drm_i915_private *dev_priv);
/* intel_bios.c */
void intel_bios_init(struct drm_i915_private *dev_priv);
void intel_bios_cleanup(struct drm_i915_private *dev_priv);
bool intel_bios_is_valid_vbt(const void *buf, size_t size);
bool intel_bios_is_tv_present(struct drm_i915_private *dev_priv);
bool intel_bios_is_lvds_present(struct drm_i915_private *dev_priv, u8 *i2c_pin);

2
drivers/gpu/drm/i915/i915_gem_context.c
View File

@ -803,7 +803,7 @@ int i915_gem_context_setparam_ioctl(struct drm_device *dev, void *data,
case I915_CONTEXT_PARAM_PRIORITY:
{
int priority = args->value;
s64 priority = args->value;
if (args->size)
ret = -EINVAL;

4
drivers/gpu/drm/i915/i915_oa_cflgt3.c
View File

@ -84,9 +84,9 @@ show_test_oa_id(struct device *kdev, struct device_attribute *attr, char *buf)
void
i915_perf_load_test_config_cflgt3(struct drm_i915_private *dev_priv)
{
strncpy(dev_priv->perf.oa.test_config.uuid,
strlcpy(dev_priv->perf.oa.test_config.uuid,
"577e8e2c-3fa0-4875-8743-3538d585e3b0",
UUID_STRING_LEN);
sizeof(dev_priv->perf.oa.test_config.uuid));
dev_priv->perf.oa.test_config.id = 1;
dev_priv->perf.oa.test_config.mux_regs = mux_config_test_oa;

4
drivers/gpu/drm/i915/i915_oa_cnl.c
View File

@ -96,9 +96,9 @@ show_test_oa_id(struct device *kdev, struct device_attribute *attr, char *buf)
void
i915_perf_load_test_config_cnl(struct drm_i915_private *dev_priv)
{
strncpy(dev_priv->perf.oa.test_config.uuid,
strlcpy(dev_priv->perf.oa.test_config.uuid,
"db41edd4-d8e7-4730-ad11-b9a2d6833503",
UUID_STRING_LEN);
sizeof(dev_priv->perf.oa.test_config.uuid));
dev_priv->perf.oa.test_config.id = 1;
dev_priv->perf.oa.test_config.mux_regs = mux_config_test_oa;

233
drivers/gpu/drm/i915/i915_pmu.c
View File

@ -285,26 +285,41 @@ static u64 count_interrupts(struct drm_i915_private *i915)
return sum;
}
static void i915_pmu_event_destroy(struct perf_event *event)
{
WARN_ON(event->parent);
}
static int engine_event_init(struct perf_event *event)
static void engine_event_destroy(struct perf_event *event)
{
struct drm_i915_private *i915 =
container_of(event->pmu, typeof(*i915), pmu.base);
struct intel_engine_cs *engine;
if (!intel_engine_lookup_user(i915, engine_event_class(event),
engine_event_instance(event)))
return -ENODEV;
engine = intel_engine_lookup_user(i915,
engine_event_class(event),
engine_event_instance(event));
if (WARN_ON_ONCE(!engine))
return;
switch (engine_event_sample(event)) {
if (engine_event_sample(event) == I915_SAMPLE_BUSY &&
intel_engine_supports_stats(engine))
intel_disable_engine_stats(engine);
}
static void i915_pmu_event_destroy(struct perf_event *event)
{
WARN_ON(event->parent);
if (is_engine_event(event))
engine_event_destroy(event);
}
static int
engine_event_status(struct intel_engine_cs *engine,
enum drm_i915_pmu_engine_sample sample)
{
switch (sample) {
case I915_SAMPLE_BUSY:
case I915_SAMPLE_WAIT:
break;
case I915_SAMPLE_SEMA:
if (INTEL_GEN(i915) < 6)
if (INTEL_GEN(engine->i915) < 6)
return -ENODEV;
break;
default:
@ -314,6 +329,30 @@ static int engine_event_init(struct perf_event *event)
return 0;
}
static int engine_event_init(struct perf_event *event)
{
struct drm_i915_private *i915 =
container_of(event->pmu, typeof(*i915), pmu.base);
struct intel_engine_cs *engine;
u8 sample;
int ret;
engine = intel_engine_lookup_user(i915, engine_event_class(event),
engine_event_instance(event));
if (!engine)
return -ENODEV;
sample = engine_event_sample(event);
ret = engine_event_status(engine, sample);
if (ret)
return ret;
if (sample == I915_SAMPLE_BUSY && intel_engine_supports_stats(engine))
ret = intel_enable_engine_stats(engine);
return ret;
}
static int i915_pmu_event_init(struct perf_event *event)
{
struct drm_i915_private *i915 =
@ -370,7 +409,94 @@ static int i915_pmu_event_init(struct perf_event *event)
return 0;
}
static u64 __i915_pmu_event_read(struct perf_event *event)
static u64 __get_rc6(struct drm_i915_private *i915)
{
u64 val;
val = intel_rc6_residency_ns(i915,
IS_VALLEYVIEW(i915) ?
VLV_GT_RENDER_RC6 :
GEN6_GT_GFX_RC6);
if (HAS_RC6p(i915))
val += intel_rc6_residency_ns(i915, GEN6_GT_GFX_RC6p);
if (HAS_RC6pp(i915))
val += intel_rc6_residency_ns(i915, GEN6_GT_GFX_RC6pp);
return val;
}
static u64 get_rc6(struct drm_i915_private *i915, bool locked)
{
#if IS_ENABLED(CONFIG_PM)
unsigned long flags;
u64 val;
if (intel_runtime_pm_get_if_in_use(i915)) {
val = __get_rc6(i915);
intel_runtime_pm_put(i915);
/*
* If we are coming back from being runtime suspended we must
* be careful not to report a larger value than returned
* previously.
*/
if (!locked)
spin_lock_irqsave(&i915->pmu.lock, flags);
if (val >= i915->pmu.sample[__I915_SAMPLE_RC6_ESTIMATED].cur) {
i915->pmu.sample[__I915_SAMPLE_RC6_ESTIMATED].cur = 0;
i915->pmu.sample[__I915_SAMPLE_RC6].cur = val;
} else {
val = i915->pmu.sample[__I915_SAMPLE_RC6_ESTIMATED].cur;
}
if (!locked)
spin_unlock_irqrestore(&i915->pmu.lock, flags);
} else {
struct pci_dev *pdev = i915->drm.pdev;
struct device *kdev = &pdev->dev;
unsigned long flags2;
/*
* We are runtime suspended.
*
* Report the delta from when the device was suspended to now,
* on top of the last known real value, as the approximated RC6
* counter value.
*/
if (!locked)
spin_lock_irqsave(&i915->pmu.lock, flags);
spin_lock_irqsave(&kdev->power.lock, flags2);
if (!i915->pmu.sample[__I915_SAMPLE_RC6_ESTIMATED].cur)
i915->pmu.suspended_jiffies_last =
kdev->power.suspended_jiffies;
val = kdev->power.suspended_jiffies -
i915->pmu.suspended_jiffies_last;
val += jiffies - kdev->power.accounting_timestamp;
spin_unlock_irqrestore(&kdev->power.lock, flags2);
val = jiffies_to_nsecs(val);
val += i915->pmu.sample[__I915_SAMPLE_RC6].cur;
i915->pmu.sample[__I915_SAMPLE_RC6_ESTIMATED].cur = val;
if (!locked)
spin_unlock_irqrestore(&i915->pmu.lock, flags);
}
return val;
#else
return __get_rc6(i915);
#endif
}
static u64 __i915_pmu_event_read(struct perf_event *event, bool locked)
{
struct drm_i915_private *i915 =
container_of(event->pmu, typeof(*i915), pmu.base);
@ -387,7 +513,7 @@ static u64 __i915_pmu_event_read(struct perf_event *event)
if (WARN_ON_ONCE(!engine)) {
/* Do nothing */
} else if (sample == I915_SAMPLE_BUSY &&
engine->pmu.busy_stats) {
intel_engine_supports_stats(engine)) {
val = ktime_to_ns(intel_engine_get_busy_time(engine));
} else {
val = engine->pmu.sample[sample].cur;
@ -408,18 +534,7 @@ static u64 __i915_pmu_event_read(struct perf_event *event)
val = count_interrupts(i915);
break;
case I915_PMU_RC6_RESIDENCY:
intel_runtime_pm_get(i915);
val = intel_rc6_residency_ns(i915,
IS_VALLEYVIEW(i915) ?
VLV_GT_RENDER_RC6 :
GEN6_GT_GFX_RC6);
if (HAS_RC6p(i915))
val += intel_rc6_residency_ns(i915,
GEN6_GT_GFX_RC6p);
if (HAS_RC6pp(i915))
val += intel_rc6_residency_ns(i915,
GEN6_GT_GFX_RC6pp);
intel_runtime_pm_put(i915);
val = get_rc6(i915, locked);
break;
}
}
@ -434,7 +549,7 @@ static void i915_pmu_event_read(struct perf_event *event)
again:
prev = local64_read(&hwc->prev_count);
new = __i915_pmu_event_read(event);
new = __i915_pmu_event_read(event, false);
if (local64_cmpxchg(&hwc->prev_count, prev, new) != prev)
goto again;
@ -442,12 +557,6 @@ again:
local64_add(new - prev, &event->count);
}
static bool engine_needs_busy_stats(struct intel_engine_cs *engine)
{
return intel_engine_supports_stats(engine) &&
(engine->pmu.enable & BIT(I915_SAMPLE_BUSY));
}
static void i915_pmu_enable(struct perf_event *event)
{
struct drm_i915_private *i915 =
@ -487,21 +596,7 @@ static void i915_pmu_enable(struct perf_event *event)
GEM_BUG_ON(sample >= I915_PMU_SAMPLE_BITS);
GEM_BUG_ON(engine->pmu.enable_count[sample] == ~0);
if (engine->pmu.enable_count[sample]++ == 0) {
/*
* Enable engine busy stats tracking if needed or
* alternatively cancel the scheduled disable.
*
* If the delayed disable was pending, cancel it and
* in this case do not enable since it already is.
*/
if (engine_needs_busy_stats(engine) &&
!engine->pmu.busy_stats) {
engine->pmu.busy_stats = true;
if (!cancel_delayed_work(&engine->pmu.disable_busy_stats))
intel_enable_engine_stats(engine);
}
}
engine->pmu.enable_count[sample]++;
}
/*
@ -509,19 +604,11 @@ static void i915_pmu_enable(struct perf_event *event)
* for all listeners. Even when the event was already enabled and has
* an existing non-zero value.
*/
local64_set(&event->hw.prev_count, __i915_pmu_event_read(event));
local64_set(&event->hw.prev_count, __i915_pmu_event_read(event, true));
spin_unlock_irqrestore(&i915->pmu.lock, flags);
}
static void __disable_busy_stats(struct work_struct *work)
{
struct intel_engine_cs *engine =
container_of(work, typeof(*engine), pmu.disable_busy_stats.work);
intel_disable_engine_stats(engine);
}
static void i915_pmu_disable(struct perf_event *event)
{
struct drm_i915_private *i915 =
@ -545,26 +632,8 @@ static void i915_pmu_disable(struct perf_event *event)
* Decrement the reference count and clear the enabled
* bitmask when the last listener on an event goes away.
*/
if (--engine->pmu.enable_count[sample] == 0) {
if (--engine->pmu.enable_count[sample] == 0)
engine->pmu.enable &= ~BIT(sample);
if (!engine_needs_busy_stats(engine) &&
engine->pmu.busy_stats) {
engine->pmu.busy_stats = false;
/*
* We request a delayed disable to handle the
* rapid on/off cycles on events, which can
* happen when tools like perf stat start, in a
* nicer way.
*
* In addition, this also helps with busy stats
* accuracy with background CPU offline/online
* migration events.
*/
queue_delayed_work(system_wq,
&engine->pmu.disable_busy_stats,
round_jiffies_up_relative(HZ));
}
}
}
GEM_BUG_ON(bit >= I915_PMU_MASK_BITS);
@ -797,8 +866,6 @@ static void i915_pmu_unregister_cpuhp_state(struct drm_i915_private *i915)
void i915_pmu_register(struct drm_i915_private *i915)
{
struct intel_engine_cs *engine;
enum intel_engine_id id;
int ret;
if (INTEL_GEN(i915) <= 2) {
@ -820,10 +887,6 @@ void i915_pmu_register(struct drm_i915_private *i915)
hrtimer_init(&i915->pmu.timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
i915->pmu.timer.function = i915_sample;
for_each_engine(engine, i915, id)
INIT_DELAYED_WORK(&engine->pmu.disable_busy_stats,
__disable_busy_stats);
ret = perf_pmu_register(&i915->pmu.base, "i915", -1);
if (ret)
goto err;
@ -843,9 +906,6 @@ err:
void i915_pmu_unregister(struct drm_i915_private *i915)
{
struct intel_engine_cs *engine;
enum intel_engine_id id;
if (!i915->pmu.base.event_init)
return;
@ -853,11 +913,6 @@ void i915_pmu_unregister(struct drm_i915_private *i915)
hrtimer_cancel(&i915->pmu.timer);
for_each_engine(engine, i915, id) {
GEM_BUG_ON(engine->pmu.busy_stats);
flush_delayed_work(&engine->pmu.disable_busy_stats);
}
i915_pmu_unregister_cpuhp_state(i915);
perf_pmu_unregister(&i915->pmu.base);

6
drivers/gpu/drm/i915/i915_pmu.h
View File

@ -27,6 +27,8 @@
enum {
__I915_SAMPLE_FREQ_ACT = 0,
__I915_SAMPLE_FREQ_REQ,
__I915_SAMPLE_RC6,
__I915_SAMPLE_RC6_ESTIMATED,
__I915_NUM_PMU_SAMPLERS
};
@ -94,6 +96,10 @@ struct i915_pmu {
* struct intel_engine_cs.
*/
struct i915_pmu_sample sample[__I915_NUM_PMU_SAMPLERS];
/**
* @suspended_jiffies_last: Cached suspend time from PM core.
*/
unsigned long suspended_jiffies_last;
};
#ifdef CONFIG_PERF_EVENTS

105
drivers/gpu/drm/i915/intel_bios.c
View File

@ -947,6 +947,86 @@ static int goto_next_sequence_v3(const u8 *data, int index, int total)
return 0;
}
/*
* Get len of pre-fixed deassert fragment from a v1 init OTP sequence,
* skip all delay + gpio operands and stop at the first DSI packet op.
*/
static int get_init_otp_deassert_fragment_len(struct drm_i915_private *dev_priv)
{
const u8 *data = dev_priv->vbt.dsi.sequence[MIPI_SEQ_INIT_OTP];
int index, len;
if (WARN_ON(!data || dev_priv->vbt.dsi.seq_version != 1))
return 0;
/* index = 1 to skip sequence byte */
for (index = 1; data[index] != MIPI_SEQ_ELEM_END; index += len) {
switch (data[index]) {
case MIPI_SEQ_ELEM_SEND_PKT:
return index == 1 ? 0 : index;
case MIPI_SEQ_ELEM_DELAY:
len = 5; /* 1 byte for operand + uint32 */
break;
case MIPI_SEQ_ELEM_GPIO:
len = 3; /* 1 byte for op, 1 for gpio_nr, 1 for value */
break;
default:
return 0;
}
}
return 0;
}
/*
* Some v1 VBT MIPI sequences do the deassert in the init OTP sequence.
* The deassert must be done before calling intel_dsi_device_ready, so for
* these devices we split the init OTP sequence into a deassert sequence and
* the actual init OTP part.
*/
static void fixup_mipi_sequences(struct drm_i915_private *dev_priv)
{
u8 *init_otp;
int len;
/* Limit this to VLV for now. */
if (!IS_VALLEYVIEW(dev_priv))
return;
/* Limit this to v1 vid-mode sequences */
if (dev_priv->vbt.dsi.config->is_cmd_mode ||
dev_priv->vbt.dsi.seq_version != 1)
return;
/* Only do this if there are otp and assert seqs and no deassert seq */
if (!dev_priv->vbt.dsi.sequence[MIPI_SEQ_INIT_OTP] ||
!dev_priv->vbt.dsi.sequence[MIPI_SEQ_ASSERT_RESET] ||
dev_priv->vbt.dsi.sequence[MIPI_SEQ_DEASSERT_RESET])
return;
/* The deassert-sequence ends at the first DSI packet */
len = get_init_otp_deassert_fragment_len(dev_priv);
if (!len)
return;
DRM_DEBUG_KMS("Using init OTP fragment to deassert reset\n");
/* Copy the fragment, update seq byte and terminate it */
init_otp = (u8 *)dev_priv->vbt.dsi.sequence[MIPI_SEQ_INIT_OTP];
dev_priv->vbt.dsi.deassert_seq = kmemdup(init_otp, len + 1, GFP_KERNEL);
if (!dev_priv->vbt.dsi.deassert_seq)
return;
dev_priv->vbt.dsi.deassert_seq[0] = MIPI_SEQ_DEASSERT_RESET;
dev_priv->vbt.dsi.deassert_seq[len] = MIPI_SEQ_ELEM_END;
/* Use the copy for deassert */
dev_priv->vbt.dsi.sequence[MIPI_SEQ_DEASSERT_RESET] =
dev_priv->vbt.dsi.deassert_seq;
/* Replace the last byte of the fragment with init OTP seq byte */
init_otp[len - 1] = MIPI_SEQ_INIT_OTP;
/* And make MIPI_MIPI_SEQ_INIT_OTP point to it */
dev_priv->vbt.dsi.sequence[MIPI_SEQ_INIT_OTP] = init_otp + len - 1;
}
static void
parse_mipi_sequence(struct drm_i915_private *dev_priv,
const struct bdb_header *bdb)
@ -1016,6 +1096,8 @@ parse_mipi_sequence(struct drm_i915_private *dev_priv,
dev_priv->vbt.dsi.size = seq_size;
dev_priv->vbt.dsi.seq_version = sequence->version;
fixup_mipi_sequences(dev_priv);
DRM_DEBUG_DRIVER("MIPI related VBT parsing complete\n");
return;
@ -1588,6 +1670,29 @@ out:
pci_unmap_rom(pdev, bios);
}
/**
* intel_bios_cleanup - Free any resources allocated by intel_bios_init()
* @dev_priv: i915 device instance
*/
void intel_bios_cleanup(struct drm_i915_private *dev_priv)
{
kfree(dev_priv->vbt.child_dev);
dev_priv->vbt.child_dev = NULL;
dev_priv->vbt.child_dev_num = 0;
kfree(dev_priv->vbt.sdvo_lvds_vbt_mode);
dev_priv->vbt.sdvo_lvds_vbt_mode = NULL;
kfree(dev_priv->vbt.lfp_lvds_vbt_mode);
dev_priv->vbt.lfp_lvds_vbt_mode = NULL;
kfree(dev_priv->vbt.dsi.data);
dev_priv->vbt.dsi.data = NULL;
kfree(dev_priv->vbt.dsi.pps);
dev_priv->vbt.dsi.pps = NULL;
kfree(dev_priv->vbt.dsi.config);
dev_priv->vbt.dsi.config = NULL;
kfree(dev_priv->vbt.dsi.deassert_seq);
dev_priv->vbt.dsi.deassert_seq = NULL;
}
/**
* intel_bios_is_tv_present - is integrated TV present in VBT
* @dev_priv: i915 device instance

29
drivers/gpu/drm/i915/intel_breadcrumbs.c
View File

@ -594,29 +594,16 @@ void intel_engine_remove_wait(struct intel_engine_cs *engine,
spin_unlock_irq(&b->rb_lock);
}
static bool signal_valid(const struct drm_i915_gem_request *request)
{
return intel_wait_check_request(&request->signaling.wait, request);
}
static bool signal_complete(const struct drm_i915_gem_request *request)
{
if (!request)
return false;
/* If another process served as the bottom-half it may have already
* signalled that this wait is already completed.
*/
if (intel_wait_complete(&request->signaling.wait))
return signal_valid(request);
/* Carefully check if the request is complete, giving time for the
/*
* Carefully check if the request is complete, giving time for the
* seqno to be visible or if the GPU hung.
*/
if (__i915_request_irq_complete(request))
return true;
return false;
return __i915_request_irq_complete(request);
}
static struct drm_i915_gem_request *to_signaler(struct rb_node *rb)
@ -659,9 +646,13 @@ static int intel_breadcrumbs_signaler(void *arg)
request = i915_gem_request_get_rcu(request);
rcu_read_unlock();
if (signal_complete(request)) {
local_bh_disable();
dma_fence_signal(&request->fence);
local_bh_enable(); /* kick start the tasklets */
if (!test_bit(DMA_FENCE_FLAG_SIGNALED_BIT,
&request->fence.flags)) {
local_bh_disable();
dma_fence_signal(&request->fence);
GEM_BUG_ON(!i915_gem_request_completed(request));
local_bh_enable(); /* kick start the tasklets */
}
spin_lock_irq(&b->rb_lock);

8
drivers/gpu/drm/i915/intel_cdclk.c
View File

@ -1952,6 +1952,14 @@ int intel_crtc_compute_min_cdclk(const struct intel_crtc_state *crtc_state)
if (crtc_state->has_audio && INTEL_GEN(dev_priv) >= 9)
min_cdclk = max(2 * 96000, min_cdclk);
/*
* On Valleyview some DSI panels lose (v|h)sync when the clock is lower
* than 320000KHz.
*/
if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_DSI) &&
IS_VALLEYVIEW(dev_priv))
min_cdclk = max(320000, min_cdclk);
if (min_cdclk > dev_priv->max_cdclk_freq) {
DRM_DEBUG_KMS("required cdclk (%d kHz) exceeds max (%d kHz)\n",
min_cdclk, dev_priv->max_cdclk_freq);

26
drivers/gpu/drm/i915/intel_engine_cs.c
View File

@ -1458,7 +1458,9 @@ static bool ring_is_idle(struct intel_engine_cs *engine)
struct drm_i915_private *dev_priv = engine->i915;
bool idle = true;
intel_runtime_pm_get(dev_priv);
/* If the whole device is asleep, the engine must be idle */
if (!intel_runtime_pm_get_if_in_use(dev_priv))
return true;
/* First check that no commands are left in the ring */
if ((I915_READ_HEAD(engine) & HEAD_ADDR) !=
@ -1943,16 +1945,22 @@ intel_engine_lookup_user(struct drm_i915_private *i915, u8 class, u8 instance)
*/
int intel_enable_engine_stats(struct intel_engine_cs *engine)
{
struct intel_engine_execlists *execlists = &engine->execlists;
unsigned long flags;
int err = 0;
if (!intel_engine_supports_stats(engine))
return -ENODEV;
tasklet_disable(&execlists->tasklet);
spin_lock_irqsave(&engine->stats.lock, flags);
if (engine->stats.enabled == ~0)
goto busy;
if (unlikely(engine->stats.enabled == ~0)) {
err = -EBUSY;
goto unlock;
}
if (engine->stats.enabled++ == 0) {
struct intel_engine_execlists *execlists = &engine->execlists;
const struct execlist_port *port = execlists->port;
unsigned int num_ports = execlists_num_ports(execlists);
@ -1967,14 +1975,12 @@ int intel_enable_engine_stats(struct intel_engine_cs *engine)
if (engine->stats.active)
engine->stats.start = engine->stats.enabled_at;
}
unlock:
spin_unlock_irqrestore(&engine->stats.lock, flags);
tasklet_enable(&execlists->tasklet);
return 0;
busy:
spin_unlock_irqrestore(&engine->stats.lock, flags);
return -EBUSY;
return err;
}
static ktime_t __intel_engine_get_busy_time(struct intel_engine_cs *engine)

14
drivers/gpu/drm/i915/intel_ringbuffer.h
View File

@ -366,20 +366,6 @@ struct intel_engine_cs {
*/
#define I915_ENGINE_SAMPLE_MAX (I915_SAMPLE_SEMA + 1)
struct i915_pmu_sample sample[I915_ENGINE_SAMPLE_MAX];
/**
* @busy_stats: Has enablement of engine stats tracking been
* requested.
*/
bool busy_stats;
/**
* @disable_busy_stats: Work item for busy stats disabling.
*
* Same as with @enable_busy_stats action, with the difference
* that we delay it in case there are rapid enable-disable
* actions, which can happen during tool startup (like perf
* stat).
*/
struct delayed_work disable_busy_stats;
} pmu;
/*