#include "i915_trace.h"
#include "intel_drv.h"
+static const u32 hpd_ibx[] = {
+ [HPD_CRT] = SDE_CRT_HOTPLUG,
+ [HPD_SDVO_B] = SDE_SDVOB_HOTPLUG,
+ [HPD_PORT_B] = SDE_PORTB_HOTPLUG,
+ [HPD_PORT_C] = SDE_PORTC_HOTPLUG,
+ [HPD_PORT_D] = SDE_PORTD_HOTPLUG
+};
+
+static const u32 hpd_cpt[] = {
+ [HPD_CRT] = SDE_CRT_HOTPLUG_CPT,
+ [HPD_SDVO_B] = SDE_SDVOB_HOTPLUG_CPT,
+ [HPD_PORT_B] = SDE_PORTB_HOTPLUG_CPT,
+ [HPD_PORT_C] = SDE_PORTC_HOTPLUG_CPT,
+ [HPD_PORT_D] = SDE_PORTD_HOTPLUG_CPT
+};
+
+static const u32 hpd_mask_i915[] = {
+ [HPD_CRT] = CRT_HOTPLUG_INT_EN,
+ [HPD_SDVO_B] = SDVOB_HOTPLUG_INT_EN,
+ [HPD_SDVO_C] = SDVOC_HOTPLUG_INT_EN,
+ [HPD_PORT_B] = PORTB_HOTPLUG_INT_EN,
+ [HPD_PORT_C] = PORTC_HOTPLUG_INT_EN,
+ [HPD_PORT_D] = PORTD_HOTPLUG_INT_EN
+};
+
+static const u32 hpd_status_gen4[] = {
+ [HPD_CRT] = CRT_HOTPLUG_INT_STATUS,
+ [HPD_SDVO_B] = SDVOB_HOTPLUG_INT_STATUS_G4X,
+ [HPD_SDVO_C] = SDVOC_HOTPLUG_INT_STATUS_G4X,
+ [HPD_PORT_B] = PORTB_HOTPLUG_INT_STATUS,
+ [HPD_PORT_C] = PORTC_HOTPLUG_INT_STATUS,
+ [HPD_PORT_D] = PORTD_HOTPLUG_INT_STATUS
+};
+
+static const u32 hpd_status_i965[] = {
+ [HPD_CRT] = CRT_HOTPLUG_INT_STATUS,
+ [HPD_SDVO_B] = SDVOB_HOTPLUG_INT_STATUS_I965,
+ [HPD_SDVO_C] = SDVOC_HOTPLUG_INT_STATUS_I965,
+ [HPD_PORT_B] = PORTB_HOTPLUG_INT_STATUS,
+ [HPD_PORT_C] = PORTC_HOTPLUG_INT_STATUS,
+ [HPD_PORT_D] = PORTD_HOTPLUG_INT_STATUS
+};
+
+static const u32 hpd_status_i915[] = { /* i915 and valleyview are the same */
+ [HPD_CRT] = CRT_HOTPLUG_INT_STATUS,
+ [HPD_SDVO_B] = SDVOB_HOTPLUG_INT_STATUS_I915,
+ [HPD_SDVO_C] = SDVOC_HOTPLUG_INT_STATUS_I915,
+ [HPD_PORT_B] = PORTB_HOTPLUG_INT_STATUS,
+ [HPD_PORT_C] = PORTC_HOTPLUG_INT_STATUS,
+ [HPD_PORT_D] = PORTD_HOTPLUG_INT_STATUS
+};
+
+static void ibx_hpd_irq_setup(struct drm_device *dev);
+static void i915_hpd_irq_setup(struct drm_device *dev);
+
/* For display hotplug interrupt */
static void
ironlake_enable_display_irq(drm_i915_private_t *dev_priv, u32 mask)
}
}
-static inline void
+static void
ironlake_disable_display_irq(drm_i915_private_t *dev_priv, u32 mask)
{
if ((dev_priv->irq_mask & mask) != mask) {
}
}
+static bool ivb_can_enable_err_int(struct drm_device *dev)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct intel_crtc *crtc;
+ enum pipe pipe;
+
+ for_each_pipe(pipe) {
+ crtc = to_intel_crtc(dev_priv->pipe_to_crtc_mapping[pipe]);
+
+ if (crtc->cpu_fifo_underrun_disabled)
+ return false;
+ }
+
+ return true;
+}
+
+static bool cpt_can_enable_serr_int(struct drm_device *dev)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ enum pipe pipe;
+ struct intel_crtc *crtc;
+
+ for_each_pipe(pipe) {
+ crtc = to_intel_crtc(dev_priv->pipe_to_crtc_mapping[pipe]);
+
+ if (crtc->pch_fifo_underrun_disabled)
+ return false;
+ }
+
+ return true;
+}
+
+static void ironlake_set_fifo_underrun_reporting(struct drm_device *dev,
+ enum pipe pipe, bool enable)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ uint32_t bit = (pipe == PIPE_A) ? DE_PIPEA_FIFO_UNDERRUN :
+ DE_PIPEB_FIFO_UNDERRUN;
+
+ if (enable)
+ ironlake_enable_display_irq(dev_priv, bit);
+ else
+ ironlake_disable_display_irq(dev_priv, bit);
+}
+
+static void ivybridge_set_fifo_underrun_reporting(struct drm_device *dev,
+ bool enable)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+
+ if (enable) {
+ if (!ivb_can_enable_err_int(dev))
+ return;
+
+ I915_WRITE(GEN7_ERR_INT, ERR_INT_FIFO_UNDERRUN_A |
+ ERR_INT_FIFO_UNDERRUN_B |
+ ERR_INT_FIFO_UNDERRUN_C);
+
+ ironlake_enable_display_irq(dev_priv, DE_ERR_INT_IVB);
+ } else {
+ ironlake_disable_display_irq(dev_priv, DE_ERR_INT_IVB);
+ }
+}
+
+static void ibx_set_fifo_underrun_reporting(struct intel_crtc *crtc,
+ bool enable)
+{
+ struct drm_device *dev = crtc->base.dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ uint32_t bit = (crtc->pipe == PIPE_A) ? SDE_TRANSA_FIFO_UNDER :
+ SDE_TRANSB_FIFO_UNDER;
+
+ if (enable)
+ I915_WRITE(SDEIMR, I915_READ(SDEIMR) & ~bit);
+ else
+ I915_WRITE(SDEIMR, I915_READ(SDEIMR) | bit);
+
+ POSTING_READ(SDEIMR);
+}
+
+static void cpt_set_fifo_underrun_reporting(struct drm_device *dev,
+ enum transcoder pch_transcoder,
+ bool enable)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+
+ if (enable) {
+ if (!cpt_can_enable_serr_int(dev))
+ return;
+
+ I915_WRITE(SERR_INT, SERR_INT_TRANS_A_FIFO_UNDERRUN |
+ SERR_INT_TRANS_B_FIFO_UNDERRUN |
+ SERR_INT_TRANS_C_FIFO_UNDERRUN);
+
+ I915_WRITE(SDEIMR, I915_READ(SDEIMR) & ~SDE_ERROR_CPT);
+ } else {
+ I915_WRITE(SDEIMR, I915_READ(SDEIMR) | SDE_ERROR_CPT);
+ }
+
+ POSTING_READ(SDEIMR);
+}
+
+/**
+ * intel_set_cpu_fifo_underrun_reporting - enable/disable FIFO underrun messages
+ * @dev: drm device
+ * @pipe: pipe
+ * @enable: true if we want to report FIFO underrun errors, false otherwise
+ *
+ * This function makes us disable or enable CPU fifo underruns for a specific
+ * pipe. Notice that on some Gens (e.g. IVB, HSW), disabling FIFO underrun
+ * reporting for one pipe may also disable all the other CPU error interruts for
+ * the other pipes, due to the fact that there's just one interrupt mask/enable
+ * bit for all the pipes.
+ *
+ * Returns the previous state of underrun reporting.
+ */
+bool intel_set_cpu_fifo_underrun_reporting(struct drm_device *dev,
+ enum pipe pipe, bool enable)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct drm_crtc *crtc = dev_priv->pipe_to_crtc_mapping[pipe];
+ struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
+ unsigned long flags;
+ bool ret;
+
+ spin_lock_irqsave(&dev_priv->irq_lock, flags);
+
+ ret = !intel_crtc->cpu_fifo_underrun_disabled;
+
+ if (enable == ret)
+ goto done;
+
+ intel_crtc->cpu_fifo_underrun_disabled = !enable;
+
+ if (IS_GEN5(dev) || IS_GEN6(dev))
+ ironlake_set_fifo_underrun_reporting(dev, pipe, enable);
+ else if (IS_GEN7(dev))
+ ivybridge_set_fifo_underrun_reporting(dev, enable);
+
+done:
+ spin_unlock_irqrestore(&dev_priv->irq_lock, flags);
+ return ret;
+}
+
+/**
+ * intel_set_pch_fifo_underrun_reporting - enable/disable FIFO underrun messages
+ * @dev: drm device
+ * @pch_transcoder: the PCH transcoder (same as pipe on IVB and older)
+ * @enable: true if we want to report FIFO underrun errors, false otherwise
+ *
+ * This function makes us disable or enable PCH fifo underruns for a specific
+ * PCH transcoder. Notice that on some PCHs (e.g. CPT/PPT), disabling FIFO
+ * underrun reporting for one transcoder may also disable all the other PCH
+ * error interruts for the other transcoders, due to the fact that there's just
+ * one interrupt mask/enable bit for all the transcoders.
+ *
+ * Returns the previous state of underrun reporting.
+ */
+bool intel_set_pch_fifo_underrun_reporting(struct drm_device *dev,
+ enum transcoder pch_transcoder,
+ bool enable)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ enum pipe p;
+ struct drm_crtc *crtc;
+ struct intel_crtc *intel_crtc;
+ unsigned long flags;
+ bool ret;
+
+ if (HAS_PCH_LPT(dev)) {
+ crtc = NULL;
+ for_each_pipe(p) {
+ struct drm_crtc *c = dev_priv->pipe_to_crtc_mapping[p];
+ if (intel_pipe_has_type(c, INTEL_OUTPUT_ANALOG)) {
+ crtc = c;
+ break;
+ }
+ }
+ if (!crtc) {
+ DRM_ERROR("PCH FIFO underrun, but no CRTC using the PCH found\n");
+ return false;
+ }
+ } else {
+ crtc = dev_priv->pipe_to_crtc_mapping[pch_transcoder];
+ }
+ intel_crtc = to_intel_crtc(crtc);
+
+ spin_lock_irqsave(&dev_priv->irq_lock, flags);
+
+ ret = !intel_crtc->pch_fifo_underrun_disabled;
+
+ if (enable == ret)
+ goto done;
+
+ intel_crtc->pch_fifo_underrun_disabled = !enable;
+
+ if (HAS_PCH_IBX(dev))
+ ibx_set_fifo_underrun_reporting(intel_crtc, enable);
+ else
+ cpt_set_fifo_underrun_reporting(dev, pch_transcoder, enable);
+
+done:
+ spin_unlock_irqrestore(&dev_priv->irq_lock, flags);
+ return ret;
+}
+
+
void
i915_enable_pipestat(drm_i915_private_t *dev_priv, int pipe, u32 mask)
{
- if ((dev_priv->pipestat[pipe] & mask) != mask) {
- u32 reg = PIPESTAT(pipe);
+ u32 reg = PIPESTAT(pipe);
+ u32 pipestat = I915_READ(reg) & 0x7fff0000;
- dev_priv->pipestat[pipe] |= mask;
- /* Enable the interrupt, clear any pending status */
- I915_WRITE(reg, dev_priv->pipestat[pipe] | (mask >> 16));
- POSTING_READ(reg);
- }
+ if ((pipestat & mask) == mask)
+ return;
+
+ /* Enable the interrupt, clear any pending status */
+ pipestat |= mask | (mask >> 16);
+ I915_WRITE(reg, pipestat);
+ POSTING_READ(reg);
}
void
i915_disable_pipestat(drm_i915_private_t *dev_priv, int pipe, u32 mask)
{
- if ((dev_priv->pipestat[pipe] & mask) != 0) {
- u32 reg = PIPESTAT(pipe);
+ u32 reg = PIPESTAT(pipe);
+ u32 pipestat = I915_READ(reg) & 0x7fff0000;
- dev_priv->pipestat[pipe] &= ~mask;
- I915_WRITE(reg, dev_priv->pipestat[pipe]);
- POSTING_READ(reg);
- }
+ if ((pipestat & mask) == 0)
+ return;
+
+ pipestat &= ~mask;
+ I915_WRITE(reg, pipestat);
+ POSTING_READ(reg);
}
/**
struct timeval *vblank_time,
unsigned flags)
{
- struct drm_i915_private *dev_priv = dev->dev_private;
struct drm_crtc *crtc;
- if (pipe < 0 || pipe >= dev_priv->num_pipe) {
+ if (pipe < 0 || pipe >= INTEL_INFO(dev)->num_pipes) {
DRM_ERROR("Invalid crtc %d\n", pipe);
return -EINVAL;
}
/*
* Handle hotplug events outside the interrupt handler proper.
*/
+#define I915_REENABLE_HOTPLUG_DELAY (2*60*1000)
+
static void i915_hotplug_work_func(struct work_struct *work)
{
drm_i915_private_t *dev_priv = container_of(work, drm_i915_private_t,
hotplug_work);
struct drm_device *dev = dev_priv->dev;
struct drm_mode_config *mode_config = &dev->mode_config;
- struct intel_encoder *encoder;
+ struct intel_connector *intel_connector;
+ struct intel_encoder *intel_encoder;
+ struct drm_connector *connector;
+ unsigned long irqflags;
+ bool hpd_disabled = false;
/* HPD irq before everything is fully set up. */
if (!dev_priv->enable_hotplug_processing)
mutex_lock(&mode_config->mutex);
DRM_DEBUG_KMS("running encoder hotplug functions\n");
- list_for_each_entry(encoder, &mode_config->encoder_list, base.head)
- if (encoder->hot_plug)
- encoder->hot_plug(encoder);
+ spin_lock_irqsave(&dev_priv->irq_lock, irqflags);
+ list_for_each_entry(connector, &mode_config->connector_list, head) {
+ intel_connector = to_intel_connector(connector);
+ intel_encoder = intel_connector->encoder;
+ if (intel_encoder->hpd_pin > HPD_NONE &&
+ dev_priv->hpd_stats[intel_encoder->hpd_pin].hpd_mark == HPD_MARK_DISABLED &&
+ connector->polled == DRM_CONNECTOR_POLL_HPD) {
+ DRM_INFO("HPD interrupt storm detected on connector %s: "
+ "switching from hotplug detection to polling\n",
+ drm_get_connector_name(connector));
+ dev_priv->hpd_stats[intel_encoder->hpd_pin].hpd_mark = HPD_DISABLED;
+ connector->polled = DRM_CONNECTOR_POLL_CONNECT
+ | DRM_CONNECTOR_POLL_DISCONNECT;
+ hpd_disabled = true;
+ }
+ }
+ /* if there were no outputs to poll, poll was disabled,
+ * therefore make sure it's enabled when disabling HPD on
+ * some connectors */
+ if (hpd_disabled) {
+ drm_kms_helper_poll_enable(dev);
+ mod_timer(&dev_priv->hotplug_reenable_timer,
+ jiffies + msecs_to_jiffies(I915_REENABLE_HOTPLUG_DELAY));
+ }
+
+ spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags);
+
+ list_for_each_entry(intel_encoder, &mode_config->encoder_list, base.head)
+ if (intel_encoder->hot_plug)
+ intel_encoder->hot_plug(intel_encoder);
mutex_unlock(&mode_config->mutex);
*/
if (!(new_delay > dev_priv->rps.max_delay ||
new_delay < dev_priv->rps.min_delay)) {
- gen6_set_rps(dev_priv->dev, new_delay);
+ if (IS_VALLEYVIEW(dev_priv->dev))
+ valleyview_set_rps(dev_priv->dev, new_delay);
+ else
+ gen6_set_rps(dev_priv->dev, new_delay);
}
mutex_unlock(&dev_priv->rps.hw_lock);
queue_work(dev_priv->wq, &dev_priv->rps.work);
}
+#define HPD_STORM_DETECT_PERIOD 1000
+#define HPD_STORM_THRESHOLD 5
+
+static inline bool hotplug_irq_storm_detect(struct drm_device *dev,
+ u32 hotplug_trigger,
+ const u32 *hpd)
+{
+ drm_i915_private_t *dev_priv = dev->dev_private;
+ unsigned long irqflags;
+ int i;
+ bool ret = false;
+
+ spin_lock_irqsave(&dev_priv->irq_lock, irqflags);
+
+ for (i = 1; i < HPD_NUM_PINS; i++) {
+
+ if (!(hpd[i] & hotplug_trigger) ||
+ dev_priv->hpd_stats[i].hpd_mark != HPD_ENABLED)
+ continue;
+
+ if (!time_in_range(jiffies, dev_priv->hpd_stats[i].hpd_last_jiffies,
+ dev_priv->hpd_stats[i].hpd_last_jiffies
+ + msecs_to_jiffies(HPD_STORM_DETECT_PERIOD))) {
+ dev_priv->hpd_stats[i].hpd_last_jiffies = jiffies;
+ dev_priv->hpd_stats[i].hpd_cnt = 0;
+ } else if (dev_priv->hpd_stats[i].hpd_cnt > HPD_STORM_THRESHOLD) {
+ dev_priv->hpd_stats[i].hpd_mark = HPD_MARK_DISABLED;
+ DRM_DEBUG_KMS("HPD interrupt storm detected on PIN %d\n", i);
+ ret = true;
+ } else {
+ dev_priv->hpd_stats[i].hpd_cnt++;
+ }
+ }
+
+ spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags);
+
+ return ret;
+}
+
static void gmbus_irq_handler(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = (drm_i915_private_t *) dev->dev_private;
/* Consume port. Then clear IIR or we'll miss events */
if (iir & I915_DISPLAY_PORT_INTERRUPT) {
u32 hotplug_status = I915_READ(PORT_HOTPLUG_STAT);
+ u32 hotplug_trigger = hotplug_status & HOTPLUG_INT_STATUS_I915;
DRM_DEBUG_DRIVER("hotplug event received, stat 0x%08x\n",
hotplug_status);
- if (hotplug_status & dev_priv->hotplug_supported_mask)
+ if (hotplug_trigger) {
+ if (hotplug_irq_storm_detect(dev, hotplug_trigger, hpd_status_i915))
+ i915_hpd_irq_setup(dev);
queue_work(dev_priv->wq,
&dev_priv->hotplug_work);
-
+ }
I915_WRITE(PORT_HOTPLUG_STAT, hotplug_status);
I915_READ(PORT_HOTPLUG_STAT);
}
{
drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
int pipe;
+ u32 hotplug_trigger = pch_iir & SDE_HOTPLUG_MASK;
- if (pch_iir & SDE_HOTPLUG_MASK)
+ if (hotplug_trigger) {
+ if (hotplug_irq_storm_detect(dev, hotplug_trigger, hpd_ibx))
+ ibx_hpd_irq_setup(dev);
queue_work(dev_priv->wq, &dev_priv->hotplug_work);
-
- if (pch_iir & SDE_AUDIO_POWER_MASK)
+ }
+ if (pch_iir & SDE_AUDIO_POWER_MASK) {
+ int port = ffs((pch_iir & SDE_AUDIO_POWER_MASK) >>
+ SDE_AUDIO_POWER_SHIFT);
DRM_DEBUG_DRIVER("PCH audio power change on port %d\n",
- (pch_iir & SDE_AUDIO_POWER_MASK) >>
- SDE_AUDIO_POWER_SHIFT);
+ port_name(port));
+ }
if (pch_iir & SDE_AUX_MASK)
dp_aux_irq_handler(dev);
if (pch_iir & (SDE_TRANSB_CRC_ERR | SDE_TRANSA_CRC_ERR))
DRM_DEBUG_DRIVER("PCH transcoder CRC error interrupt\n");
- if (pch_iir & SDE_TRANSB_FIFO_UNDER)
- DRM_DEBUG_DRIVER("PCH transcoder B underrun interrupt\n");
if (pch_iir & SDE_TRANSA_FIFO_UNDER)
- DRM_DEBUG_DRIVER("PCH transcoder A underrun interrupt\n");
+ if (intel_set_pch_fifo_underrun_reporting(dev, TRANSCODER_A,
+ false))
+ DRM_DEBUG_DRIVER("PCH transcoder A FIFO underrun\n");
+
+ if (pch_iir & SDE_TRANSB_FIFO_UNDER)
+ if (intel_set_pch_fifo_underrun_reporting(dev, TRANSCODER_B,
+ false))
+ DRM_DEBUG_DRIVER("PCH transcoder B FIFO underrun\n");
+}
+
+static void ivb_err_int_handler(struct drm_device *dev)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ u32 err_int = I915_READ(GEN7_ERR_INT);
+
+ if (err_int & ERR_INT_POISON)
+ DRM_ERROR("Poison interrupt\n");
+
+ if (err_int & ERR_INT_FIFO_UNDERRUN_A)
+ if (intel_set_cpu_fifo_underrun_reporting(dev, PIPE_A, false))
+ DRM_DEBUG_DRIVER("Pipe A FIFO underrun\n");
+
+ if (err_int & ERR_INT_FIFO_UNDERRUN_B)
+ if (intel_set_cpu_fifo_underrun_reporting(dev, PIPE_B, false))
+ DRM_DEBUG_DRIVER("Pipe B FIFO underrun\n");
+
+ if (err_int & ERR_INT_FIFO_UNDERRUN_C)
+ if (intel_set_cpu_fifo_underrun_reporting(dev, PIPE_C, false))
+ DRM_DEBUG_DRIVER("Pipe C FIFO underrun\n");
+
+ I915_WRITE(GEN7_ERR_INT, err_int);
+}
+
+static void cpt_serr_int_handler(struct drm_device *dev)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ u32 serr_int = I915_READ(SERR_INT);
+
+ if (serr_int & SERR_INT_POISON)
+ DRM_ERROR("PCH poison interrupt\n");
+
+ if (serr_int & SERR_INT_TRANS_A_FIFO_UNDERRUN)
+ if (intel_set_pch_fifo_underrun_reporting(dev, TRANSCODER_A,
+ false))
+ DRM_DEBUG_DRIVER("PCH transcoder A FIFO underrun\n");
+
+ if (serr_int & SERR_INT_TRANS_B_FIFO_UNDERRUN)
+ if (intel_set_pch_fifo_underrun_reporting(dev, TRANSCODER_B,
+ false))
+ DRM_DEBUG_DRIVER("PCH transcoder B FIFO underrun\n");
+
+ if (serr_int & SERR_INT_TRANS_C_FIFO_UNDERRUN)
+ if (intel_set_pch_fifo_underrun_reporting(dev, TRANSCODER_C,
+ false))
+ DRM_DEBUG_DRIVER("PCH transcoder C FIFO underrun\n");
+
+ I915_WRITE(SERR_INT, serr_int);
}
static void cpt_irq_handler(struct drm_device *dev, u32 pch_iir)
{
drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
int pipe;
+ u32 hotplug_trigger = pch_iir & SDE_HOTPLUG_MASK_CPT;
- if (pch_iir & SDE_HOTPLUG_MASK_CPT)
+ if (hotplug_trigger) {
+ if (hotplug_irq_storm_detect(dev, hotplug_trigger, hpd_cpt))
+ ibx_hpd_irq_setup(dev);
queue_work(dev_priv->wq, &dev_priv->hotplug_work);
-
- if (pch_iir & SDE_AUDIO_POWER_MASK_CPT)
- DRM_DEBUG_DRIVER("PCH audio power change on port %d\n",
- (pch_iir & SDE_AUDIO_POWER_MASK_CPT) >>
- SDE_AUDIO_POWER_SHIFT_CPT);
+ }
+ if (pch_iir & SDE_AUDIO_POWER_MASK_CPT) {
+ int port = ffs((pch_iir & SDE_AUDIO_POWER_MASK_CPT) >>
+ SDE_AUDIO_POWER_SHIFT_CPT);
+ DRM_DEBUG_DRIVER("PCH audio power change on port %c\n",
+ port_name(port));
+ }
if (pch_iir & SDE_AUX_MASK_CPT)
dp_aux_irq_handler(dev);
DRM_DEBUG_DRIVER(" pipe %c FDI IIR: 0x%08x\n",
pipe_name(pipe),
I915_READ(FDI_RX_IIR(pipe)));
+
+ if (pch_iir & SDE_ERROR_CPT)
+ cpt_serr_int_handler(dev);
}
static irqreturn_t ivybridge_irq_handler(int irq, void *arg)
{
struct drm_device *dev = (struct drm_device *) arg;
drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
- u32 de_iir, gt_iir, de_ier, pm_iir, sde_ier;
+ u32 de_iir, gt_iir, de_ier, pm_iir, sde_ier = 0;
irqreturn_t ret = IRQ_NONE;
int i;
atomic_inc(&dev_priv->irq_received);
+ /* We get interrupts on unclaimed registers, so check for this before we
+ * do any I915_{READ,WRITE}. */
+ if (IS_HASWELL(dev) &&
+ (I915_READ_NOTRACE(FPGA_DBG) & FPGA_DBG_RM_NOCLAIM)) {
+ DRM_ERROR("Unclaimed register before interrupt\n");
+ I915_WRITE_NOTRACE(FPGA_DBG, FPGA_DBG_RM_NOCLAIM);
+ }
+
/* disable master interrupt before clearing iir */
de_ier = I915_READ(DEIER);
I915_WRITE(DEIER, de_ier & ~DE_MASTER_IRQ_CONTROL);
* able to process them after we restore SDEIER (as soon as we restore
* it, we'll get an interrupt if SDEIIR still has something to process
* due to its back queue). */
- sde_ier = I915_READ(SDEIER);
- I915_WRITE(SDEIER, 0);
- POSTING_READ(SDEIER);
+ if (!HAS_PCH_NOP(dev)) {
+ sde_ier = I915_READ(SDEIER);
+ I915_WRITE(SDEIER, 0);
+ POSTING_READ(SDEIER);
+ }
+
+ /* On Haswell, also mask ERR_INT because we don't want to risk
+ * generating "unclaimed register" interrupts from inside the interrupt
+ * handler. */
+ if (IS_HASWELL(dev))
+ ironlake_disable_display_irq(dev_priv, DE_ERR_INT_IVB);
gt_iir = I915_READ(GTIIR);
if (gt_iir) {
de_iir = I915_READ(DEIIR);
if (de_iir) {
+ if (de_iir & DE_ERR_INT_IVB)
+ ivb_err_int_handler(dev);
+
if (de_iir & DE_AUX_CHANNEL_A_IVB)
dp_aux_irq_handler(dev);
}
/* check event from PCH */
- if (de_iir & DE_PCH_EVENT_IVB) {
+ if (!HAS_PCH_NOP(dev) && (de_iir & DE_PCH_EVENT_IVB)) {
u32 pch_iir = I915_READ(SDEIIR);
cpt_irq_handler(dev, pch_iir);
ret = IRQ_HANDLED;
}
+ if (IS_HASWELL(dev) && ivb_can_enable_err_int(dev))
+ ironlake_enable_display_irq(dev_priv, DE_ERR_INT_IVB);
+
I915_WRITE(DEIER, de_ier);
POSTING_READ(DEIER);
- I915_WRITE(SDEIER, sde_ier);
- POSTING_READ(SDEIER);
+ if (!HAS_PCH_NOP(dev)) {
+ I915_WRITE(SDEIER, sde_ier);
+ POSTING_READ(SDEIER);
+ }
return ret;
}
if (de_iir & DE_PIPEB_VBLANK)
drm_handle_vblank(dev, 1);
+ if (de_iir & DE_POISON)
+ DRM_ERROR("Poison interrupt\n");
+
+ if (de_iir & DE_PIPEA_FIFO_UNDERRUN)
+ if (intel_set_cpu_fifo_underrun_reporting(dev, PIPE_A, false))
+ DRM_DEBUG_DRIVER("Pipe A FIFO underrun\n");
+
+ if (de_iir & DE_PIPEB_FIFO_UNDERRUN)
+ if (intel_set_cpu_fifo_underrun_reporting(dev, PIPE_B, false))
+ DRM_DEBUG_DRIVER("Pipe B FIFO underrun\n");
+
if (de_iir & DE_PLANEA_FLIP_DONE) {
intel_prepare_page_flip(dev, 0);
intel_finish_page_flip_plane(dev, 0);
for_each_ring(ring, dev_priv, i)
wake_up_all(&ring->irq_queue);
+ intel_display_handle_reset(dev);
+
wake_up_all(&dev_priv->gpu_error.reset_queue);
}
}
#ifdef CONFIG_DEBUG_FS
static struct drm_i915_error_object *
-i915_error_object_create(struct drm_i915_private *dev_priv,
- struct drm_i915_gem_object *src)
+i915_error_object_create_sized(struct drm_i915_private *dev_priv,
+ struct drm_i915_gem_object *src,
+ const int num_pages)
{
struct drm_i915_error_object *dst;
- int i, count;
+ int i;
u32 reloc_offset;
if (src == NULL || src->pages == NULL)
return NULL;
- count = src->base.size / PAGE_SIZE;
-
- dst = kmalloc(sizeof(*dst) + count * sizeof(u32 *), GFP_ATOMIC);
+ dst = kmalloc(sizeof(*dst) + num_pages * sizeof(u32 *), GFP_ATOMIC);
if (dst == NULL)
return NULL;
reloc_offset = src->gtt_offset;
- for (i = 0; i < count; i++) {
+ for (i = 0; i < num_pages; i++) {
unsigned long flags;
void *d;
reloc_offset += PAGE_SIZE;
}
- dst->page_count = count;
+ dst->page_count = num_pages;
dst->gtt_offset = src->gtt_offset;
return dst;
kfree(dst);
return NULL;
}
+#define i915_error_object_create(dev_priv, src) \
+ i915_error_object_create_sized((dev_priv), (src), \
+ (src)->base.size>>PAGE_SHIFT)
static void
i915_error_object_free(struct drm_i915_error_object *obj)
switch (INTEL_INFO(dev)->gen) {
case 7:
case 6:
- for (i = 0; i < 16; i++)
+ for (i = 0; i < dev_priv->num_fence_regs; i++)
error->fence[i] = I915_READ64(FENCE_REG_SANDYBRIDGE_0 + (i * 8));
break;
case 5:
error->cpu_ring_tail[ring->id] = ring->tail;
}
+
+static void i915_gem_record_active_context(struct intel_ring_buffer *ring,
+ struct drm_i915_error_state *error,
+ struct drm_i915_error_ring *ering)
+{
+ struct drm_i915_private *dev_priv = ring->dev->dev_private;
+ struct drm_i915_gem_object *obj;
+
+ /* Currently render ring is the only HW context user */
+ if (ring->id != RCS || !error->ccid)
+ return;
+
+ list_for_each_entry(obj, &dev_priv->mm.bound_list, gtt_list) {
+ if ((error->ccid & PAGE_MASK) == obj->gtt_offset) {
+ ering->ctx = i915_error_object_create_sized(dev_priv,
+ obj, 1);
+ }
+ }
+}
+
static void i915_gem_record_rings(struct drm_device *dev,
struct drm_i915_error_state *error)
{
error->ring[i].ringbuffer =
i915_error_object_create(dev_priv, ring->obj);
+
+ i915_gem_record_active_context(ring, error, &error->ring[i]);
+
count = 0;
list_for_each_entry(request, &ring->request_list, list)
count++;
return;
}
- DRM_INFO("capturing error event; look for more information in"
+ DRM_INFO("capturing error event; look for more information in "
"/sys/kernel/debug/dri/%d/i915_error_state\n",
dev->primary->index);
kref_init(&error->ref);
error->eir = I915_READ(EIR);
error->pgtbl_er = I915_READ(PGTBL_ER);
- error->ccid = I915_READ(CCID);
+ if (HAS_HW_CONTEXTS(dev))
+ error->ccid = I915_READ(CCID);
if (HAS_PCH_SPLIT(dev))
error->ier = I915_READ(DEIER) | I915_READ(GTIER);
else if (INTEL_INFO(dev)->gen == 6)
error->forcewake = I915_READ(FORCEWAKE);
- for_each_pipe(pipe)
- error->pipestat[pipe] = I915_READ(PIPESTAT(pipe));
+ if (!HAS_PCH_SPLIT(dev))
+ for_each_pipe(pipe)
+ error->pipestat[pipe] = I915_READ(PIPESTAT(pipe));
if (INTEL_INFO(dev)->gen >= 6) {
error->error = I915_READ(ERROR_GEN6);
queue_work(dev_priv->wq, &dev_priv->gpu_error.work);
}
-static void i915_pageflip_stall_check(struct drm_device *dev, int pipe)
+static void __always_unused i915_pageflip_stall_check(struct drm_device *dev, int pipe)
{
drm_i915_private_t *dev_priv = dev->dev_private;
struct drm_crtc *crtc = dev_priv->pipe_to_crtc_mapping[pipe];
return false;
}
+static bool semaphore_passed(struct intel_ring_buffer *ring)
+{
+ struct drm_i915_private *dev_priv = ring->dev->dev_private;
+ u32 acthd = intel_ring_get_active_head(ring) & HEAD_ADDR;
+ struct intel_ring_buffer *signaller;
+ u32 cmd, ipehr, acthd_min;
+
+ ipehr = I915_READ(RING_IPEHR(ring->mmio_base));
+ if ((ipehr & ~(0x3 << 16)) !=
+ (MI_SEMAPHORE_MBOX | MI_SEMAPHORE_COMPARE | MI_SEMAPHORE_REGISTER))
+ return false;
+
+ /* ACTHD is likely pointing to the dword after the actual command,
+ * so scan backwards until we find the MBOX.
+ */
+ acthd_min = max((int)acthd - 3 * 4, 0);
+ do {
+ cmd = ioread32(ring->virtual_start + acthd);
+ if (cmd == ipehr)
+ break;
+
+ acthd -= 4;
+ if (acthd < acthd_min)
+ return false;
+ } while (1);
+
+ signaller = &dev_priv->ring[(ring->id + (((ipehr >> 17) & 1) + 1)) % 3];
+ return i915_seqno_passed(signaller->get_seqno(signaller, false),
+ ioread32(ring->virtual_start+acthd+4)+1);
+}
+
static bool kick_ring(struct intel_ring_buffer *ring)
{
struct drm_device *dev = ring->dev;
I915_WRITE_CTL(ring, tmp);
return true;
}
+
+ if (INTEL_INFO(dev)->gen >= 6 &&
+ tmp & RING_WAIT_SEMAPHORE &&
+ semaphore_passed(ring)) {
+ DRM_ERROR("Kicking stuck semaphore on %s\n",
+ ring->name);
+ I915_WRITE_CTL(ring, tmp);
+ return true;
+ }
return false;
}
I915_WRITE(GTIER, 0x0);
POSTING_READ(GTIER);
+ if (HAS_PCH_NOP(dev))
+ return;
+
/* south display irq */
I915_WRITE(SDEIMR, 0xffffffff);
- I915_WRITE(SDEIER, 0x0);
+ /*
+ * SDEIER is also touched by the interrupt handler to work around missed
+ * PCH interrupts. Hence we can't update it after the interrupt handler
+ * is enabled - instead we unconditionally enable all PCH interrupt
+ * sources here, but then only unmask them as needed with SDEIMR.
+ */
+ I915_WRITE(SDEIER, 0xffffffff);
POSTING_READ(SDEIER);
}
POSTING_READ(VLV_IER);
}
-/*
- * Enable digital hotplug on the PCH, and configure the DP short pulse
- * duration to 2ms (which is the minimum in the Display Port spec)
- *
- * This register is the same on all known PCH chips.
- */
-
-static void ibx_enable_hotplug(struct drm_device *dev)
+static void ibx_hpd_irq_setup(struct drm_device *dev)
{
drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
- u32 hotplug;
+ struct drm_mode_config *mode_config = &dev->mode_config;
+ struct intel_encoder *intel_encoder;
+ u32 mask = ~I915_READ(SDEIMR);
+ u32 hotplug;
+
+ if (HAS_PCH_IBX(dev)) {
+ mask &= ~SDE_HOTPLUG_MASK;
+ list_for_each_entry(intel_encoder, &mode_config->encoder_list, base.head)
+ if (dev_priv->hpd_stats[intel_encoder->hpd_pin].hpd_mark == HPD_ENABLED)
+ mask |= hpd_ibx[intel_encoder->hpd_pin];
+ } else {
+ mask &= ~SDE_HOTPLUG_MASK_CPT;
+ list_for_each_entry(intel_encoder, &mode_config->encoder_list, base.head)
+ if (dev_priv->hpd_stats[intel_encoder->hpd_pin].hpd_mark == HPD_ENABLED)
+ mask |= hpd_cpt[intel_encoder->hpd_pin];
+ }
+
+ I915_WRITE(SDEIMR, ~mask);
+ /*
+ * Enable digital hotplug on the PCH, and configure the DP short pulse
+ * duration to 2ms (which is the minimum in the Display Port spec)
+ *
+ * This register is the same on all known PCH chips.
+ */
hotplug = I915_READ(PCH_PORT_HOTPLUG);
hotplug &= ~(PORTD_PULSE_DURATION_MASK|PORTC_PULSE_DURATION_MASK|PORTB_PULSE_DURATION_MASK);
hotplug |= PORTD_HOTPLUG_ENABLE | PORTD_PULSE_DURATION_2ms;
drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
u32 mask;
- if (HAS_PCH_IBX(dev))
- mask = SDE_HOTPLUG_MASK |
- SDE_GMBUS |
- SDE_AUX_MASK;
- else
- mask = SDE_HOTPLUG_MASK_CPT |
- SDE_GMBUS_CPT |
- SDE_AUX_MASK_CPT;
+ if (HAS_PCH_IBX(dev)) {
+ mask = SDE_GMBUS | SDE_AUX_MASK | SDE_TRANSB_FIFO_UNDER |
+ SDE_TRANSA_FIFO_UNDER | SDE_POISON;
+ } else {
+ mask = SDE_GMBUS_CPT | SDE_AUX_MASK_CPT | SDE_ERROR_CPT;
+
+ I915_WRITE(SERR_INT, I915_READ(SERR_INT));
+ }
+
+ if (HAS_PCH_NOP(dev))
+ return;
I915_WRITE(SDEIIR, I915_READ(SDEIIR));
I915_WRITE(SDEIMR, ~mask);
- I915_WRITE(SDEIER, mask);
- POSTING_READ(SDEIER);
-
- ibx_enable_hotplug(dev);
}
static int ironlake_irq_postinstall(struct drm_device *dev)
/* enable kind of interrupts always enabled */
u32 display_mask = DE_MASTER_IRQ_CONTROL | DE_GSE | DE_PCH_EVENT |
DE_PLANEA_FLIP_DONE | DE_PLANEB_FLIP_DONE |
- DE_AUX_CHANNEL_A;
+ DE_AUX_CHANNEL_A | DE_PIPEB_FIFO_UNDERRUN |
+ DE_PIPEA_FIFO_UNDERRUN | DE_POISON;
u32 render_irqs;
dev_priv->irq_mask = ~display_mask;
DE_PLANEC_FLIP_DONE_IVB |
DE_PLANEB_FLIP_DONE_IVB |
DE_PLANEA_FLIP_DONE_IVB |
- DE_AUX_CHANNEL_A_IVB;
+ DE_AUX_CHANNEL_A_IVB |
+ DE_ERR_INT_IVB;
u32 render_irqs;
dev_priv->irq_mask = ~display_mask;
/* should always can generate irq */
+ I915_WRITE(GEN7_ERR_INT, I915_READ(GEN7_ERR_INT));
I915_WRITE(DEIIR, I915_READ(DEIIR));
I915_WRITE(DEIMR, dev_priv->irq_mask);
I915_WRITE(DEIER,
I915_DISPLAY_PIPE_A_VBLANK_INTERRUPT |
I915_DISPLAY_PIPE_B_VBLANK_INTERRUPT;
- dev_priv->pipestat[0] = 0;
- dev_priv->pipestat[1] = 0;
-
/* Hack for broken MSIs on VLV */
pci_write_config_dword(dev_priv->dev->pdev, 0x94, 0xfee00000);
pci_read_config_word(dev->pdev, 0x98, &msid);
return 0;
}
-static void valleyview_hpd_irq_setup(struct drm_device *dev)
-{
- drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
- u32 hotplug_en = I915_READ(PORT_HOTPLUG_EN);
-
- /* Note HDMI and DP share bits */
- if (dev_priv->hotplug_supported_mask & PORTB_HOTPLUG_INT_STATUS)
- hotplug_en |= PORTB_HOTPLUG_INT_EN;
- if (dev_priv->hotplug_supported_mask & PORTC_HOTPLUG_INT_STATUS)
- hotplug_en |= PORTC_HOTPLUG_INT_EN;
- if (dev_priv->hotplug_supported_mask & PORTD_HOTPLUG_INT_STATUS)
- hotplug_en |= PORTD_HOTPLUG_INT_EN;
- if (dev_priv->hotplug_supported_mask & SDVOC_HOTPLUG_INT_STATUS_I915)
- hotplug_en |= SDVOC_HOTPLUG_INT_EN;
- if (dev_priv->hotplug_supported_mask & SDVOB_HOTPLUG_INT_STATUS_I915)
- hotplug_en |= SDVOB_HOTPLUG_INT_EN;
- if (dev_priv->hotplug_supported_mask & CRT_HOTPLUG_INT_STATUS) {
- hotplug_en |= CRT_HOTPLUG_INT_EN;
- hotplug_en |= CRT_HOTPLUG_VOLTAGE_COMPARE_50;
- }
-
- I915_WRITE(PORT_HOTPLUG_EN, hotplug_en);
-}
-
static void valleyview_irq_uninstall(struct drm_device *dev)
{
drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
if (!dev_priv)
return;
+ del_timer_sync(&dev_priv->hotplug_reenable_timer);
+
for_each_pipe(pipe)
I915_WRITE(PIPESTAT(pipe), 0xffff);
if (!dev_priv)
return;
+ del_timer_sync(&dev_priv->hotplug_reenable_timer);
+
I915_WRITE(HWSTAM, 0xffffffff);
I915_WRITE(DEIMR, 0xffffffff);
I915_WRITE(DEIER, 0x0);
I915_WRITE(DEIIR, I915_READ(DEIIR));
+ if (IS_GEN7(dev))
+ I915_WRITE(GEN7_ERR_INT, I915_READ(GEN7_ERR_INT));
I915_WRITE(GTIMR, 0xffffffff);
I915_WRITE(GTIER, 0x0);
I915_WRITE(GTIIR, I915_READ(GTIIR));
+ if (HAS_PCH_NOP(dev))
+ return;
+
I915_WRITE(SDEIMR, 0xffffffff);
I915_WRITE(SDEIER, 0x0);
I915_WRITE(SDEIIR, I915_READ(SDEIIR));
+ if (HAS_PCH_CPT(dev) || HAS_PCH_LPT(dev))
+ I915_WRITE(SERR_INT, I915_READ(SERR_INT));
}
static void i8xx_irq_preinstall(struct drm_device * dev)
{
drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
- dev_priv->pipestat[0] = 0;
- dev_priv->pipestat[1] = 0;
-
I915_WRITE16(EMR,
~(I915_ERROR_PAGE_TABLE | I915_ERROR_MEMORY_REFRESH));
return 0;
}
+/*
+ * Returns true when a page flip has completed.
+ */
+static bool i8xx_handle_vblank(struct drm_device *dev,
+ int pipe, u16 iir)
+{
+ drm_i915_private_t *dev_priv = dev->dev_private;
+ u16 flip_pending = DISPLAY_PLANE_FLIP_PENDING(pipe);
+
+ if (!drm_handle_vblank(dev, pipe))
+ return false;
+
+ if ((iir & flip_pending) == 0)
+ return false;
+
+ intel_prepare_page_flip(dev, pipe);
+
+ /* We detect FlipDone by looking for the change in PendingFlip from '1'
+ * to '0' on the following vblank, i.e. IIR has the Pendingflip
+ * asserted following the MI_DISPLAY_FLIP, but ISR is deasserted, hence
+ * the flip is completed (no longer pending). Since this doesn't raise
+ * an interrupt per se, we watch for the change at vblank.
+ */
+ if (I915_READ16(ISR) & flip_pending)
+ return false;
+
+ intel_finish_page_flip(dev, pipe);
+
+ return true;
+}
+
static irqreturn_t i8xx_irq_handler(int irq, void *arg)
{
struct drm_device *dev = (struct drm_device *) arg;
notify_ring(dev, &dev_priv->ring[RCS]);
if (pipe_stats[0] & PIPE_VBLANK_INTERRUPT_STATUS &&
- drm_handle_vblank(dev, 0)) {
- if (iir & I915_DISPLAY_PLANE_A_FLIP_PENDING_INTERRUPT) {
- intel_prepare_page_flip(dev, 0);
- intel_finish_page_flip(dev, 0);
- flip_mask &= ~I915_DISPLAY_PLANE_A_FLIP_PENDING_INTERRUPT;
- }
- }
+ i8xx_handle_vblank(dev, 0, iir))
+ flip_mask &= ~DISPLAY_PLANE_FLIP_PENDING(0);
if (pipe_stats[1] & PIPE_VBLANK_INTERRUPT_STATUS &&
- drm_handle_vblank(dev, 1)) {
- if (iir & I915_DISPLAY_PLANE_B_FLIP_PENDING_INTERRUPT) {
- intel_prepare_page_flip(dev, 1);
- intel_finish_page_flip(dev, 1);
- flip_mask &= ~I915_DISPLAY_PLANE_B_FLIP_PENDING_INTERRUPT;
- }
- }
+ i8xx_handle_vblank(dev, 1, iir))
+ flip_mask &= ~DISPLAY_PLANE_FLIP_PENDING(1);
iir = new_iir;
}
drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
u32 enable_mask;
- dev_priv->pipestat[0] = 0;
- dev_priv->pipestat[1] = 0;
-
I915_WRITE(EMR, ~(I915_ERROR_PAGE_TABLE | I915_ERROR_MEMORY_REFRESH));
/* Unmask the interrupts that we always want on. */
return 0;
}
-static void i915_hpd_irq_setup(struct drm_device *dev)
+/*
+ * Returns true when a page flip has completed.
+ */
+static bool i915_handle_vblank(struct drm_device *dev,
+ int plane, int pipe, u32 iir)
{
- drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
- u32 hotplug_en;
+ drm_i915_private_t *dev_priv = dev->dev_private;
+ u32 flip_pending = DISPLAY_PLANE_FLIP_PENDING(plane);
- if (I915_HAS_HOTPLUG(dev)) {
- hotplug_en = I915_READ(PORT_HOTPLUG_EN);
+ if (!drm_handle_vblank(dev, pipe))
+ return false;
- if (dev_priv->hotplug_supported_mask & PORTB_HOTPLUG_INT_STATUS)
- hotplug_en |= PORTB_HOTPLUG_INT_EN;
- if (dev_priv->hotplug_supported_mask & PORTC_HOTPLUG_INT_STATUS)
- hotplug_en |= PORTC_HOTPLUG_INT_EN;
- if (dev_priv->hotplug_supported_mask & PORTD_HOTPLUG_INT_STATUS)
- hotplug_en |= PORTD_HOTPLUG_INT_EN;
- if (dev_priv->hotplug_supported_mask & SDVOC_HOTPLUG_INT_STATUS_I915)
- hotplug_en |= SDVOC_HOTPLUG_INT_EN;
- if (dev_priv->hotplug_supported_mask & SDVOB_HOTPLUG_INT_STATUS_I915)
- hotplug_en |= SDVOB_HOTPLUG_INT_EN;
- if (dev_priv->hotplug_supported_mask & CRT_HOTPLUG_INT_STATUS) {
- hotplug_en |= CRT_HOTPLUG_INT_EN;
- hotplug_en |= CRT_HOTPLUG_VOLTAGE_COMPARE_50;
- }
+ if ((iir & flip_pending) == 0)
+ return false;
- /* Ignore TV since it's buggy */
+ intel_prepare_page_flip(dev, plane);
- I915_WRITE(PORT_HOTPLUG_EN, hotplug_en);
- }
+ /* We detect FlipDone by looking for the change in PendingFlip from '1'
+ * to '0' on the following vblank, i.e. IIR has the Pendingflip
+ * asserted following the MI_DISPLAY_FLIP, but ISR is deasserted, hence
+ * the flip is completed (no longer pending). Since this doesn't raise
+ * an interrupt per se, we watch for the change at vblank.
+ */
+ if (I915_READ(ISR) & flip_pending)
+ return false;
+
+ intel_finish_page_flip(dev, pipe);
+
+ return true;
}
static irqreturn_t i915_irq_handler(int irq, void *arg)
u32 flip_mask =
I915_DISPLAY_PLANE_A_FLIP_PENDING_INTERRUPT |
I915_DISPLAY_PLANE_B_FLIP_PENDING_INTERRUPT;
- u32 flip[2] = {
- I915_DISPLAY_PLANE_A_FLIP_PENDING_INTERRUPT,
- I915_DISPLAY_PLANE_B_FLIP_PENDING_INTERRUPT
- };
int pipe, ret = IRQ_NONE;
atomic_inc(&dev_priv->irq_received);
if ((I915_HAS_HOTPLUG(dev)) &&
(iir & I915_DISPLAY_PORT_INTERRUPT)) {
u32 hotplug_status = I915_READ(PORT_HOTPLUG_STAT);
+ u32 hotplug_trigger = hotplug_status & HOTPLUG_INT_STATUS_I915;
DRM_DEBUG_DRIVER("hotplug event received, stat 0x%08x\n",
hotplug_status);
- if (hotplug_status & dev_priv->hotplug_supported_mask)
+ if (hotplug_trigger) {
+ if (hotplug_irq_storm_detect(dev, hotplug_trigger, hpd_status_i915))
+ i915_hpd_irq_setup(dev);
queue_work(dev_priv->wq,
&dev_priv->hotplug_work);
-
+ }
I915_WRITE(PORT_HOTPLUG_STAT, hotplug_status);
POSTING_READ(PORT_HOTPLUG_STAT);
}
int plane = pipe;
if (IS_MOBILE(dev))
plane = !plane;
+
if (pipe_stats[pipe] & PIPE_VBLANK_INTERRUPT_STATUS &&
- drm_handle_vblank(dev, pipe)) {
- if (iir & flip[plane]) {
- intel_prepare_page_flip(dev, plane);
- intel_finish_page_flip(dev, pipe);
- flip_mask &= ~flip[plane];
- }
- }
+ i915_handle_vblank(dev, plane, pipe, iir))
+ flip_mask &= ~DISPLAY_PLANE_FLIP_PENDING(plane);
if (pipe_stats[pipe] & PIPE_LEGACY_BLC_EVENT_STATUS)
blc_event = true;
drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
int pipe;
+ del_timer_sync(&dev_priv->hotplug_reenable_timer);
+
if (I915_HAS_HOTPLUG(dev)) {
I915_WRITE(PORT_HOTPLUG_EN, 0);
I915_WRITE(PORT_HOTPLUG_STAT, I915_READ(PORT_HOTPLUG_STAT));
I915_RENDER_COMMAND_PARSER_ERROR_INTERRUPT);
enable_mask = ~dev_priv->irq_mask;
+ enable_mask &= ~(I915_DISPLAY_PLANE_A_FLIP_PENDING_INTERRUPT |
+ I915_DISPLAY_PLANE_B_FLIP_PENDING_INTERRUPT);
enable_mask |= I915_USER_INTERRUPT;
if (IS_G4X(dev))
enable_mask |= I915_BSD_USER_INTERRUPT;
- dev_priv->pipestat[0] = 0;
- dev_priv->pipestat[1] = 0;
i915_enable_pipestat(dev_priv, 0, PIPE_GMBUS_EVENT_ENABLE);
/*
return 0;
}
-static void i965_hpd_irq_setup(struct drm_device *dev)
+static void i915_hpd_irq_setup(struct drm_device *dev)
{
drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
+ struct drm_mode_config *mode_config = &dev->mode_config;
+ struct intel_encoder *intel_encoder;
u32 hotplug_en;
- /* Note HDMI and DP share hotplug bits */
- hotplug_en = 0;
- if (dev_priv->hotplug_supported_mask & PORTB_HOTPLUG_INT_STATUS)
- hotplug_en |= PORTB_HOTPLUG_INT_EN;
- if (dev_priv->hotplug_supported_mask & PORTC_HOTPLUG_INT_STATUS)
- hotplug_en |= PORTC_HOTPLUG_INT_EN;
- if (dev_priv->hotplug_supported_mask & PORTD_HOTPLUG_INT_STATUS)
- hotplug_en |= PORTD_HOTPLUG_INT_EN;
- if (IS_G4X(dev)) {
- if (dev_priv->hotplug_supported_mask & SDVOC_HOTPLUG_INT_STATUS_G4X)
- hotplug_en |= SDVOC_HOTPLUG_INT_EN;
- if (dev_priv->hotplug_supported_mask & SDVOB_HOTPLUG_INT_STATUS_G4X)
- hotplug_en |= SDVOB_HOTPLUG_INT_EN;
- } else {
- if (dev_priv->hotplug_supported_mask & SDVOC_HOTPLUG_INT_STATUS_I965)
- hotplug_en |= SDVOC_HOTPLUG_INT_EN;
- if (dev_priv->hotplug_supported_mask & SDVOB_HOTPLUG_INT_STATUS_I965)
- hotplug_en |= SDVOB_HOTPLUG_INT_EN;
- }
- if (dev_priv->hotplug_supported_mask & CRT_HOTPLUG_INT_STATUS) {
- hotplug_en |= CRT_HOTPLUG_INT_EN;
-
+ if (I915_HAS_HOTPLUG(dev)) {
+ hotplug_en = I915_READ(PORT_HOTPLUG_EN);
+ hotplug_en &= ~HOTPLUG_INT_EN_MASK;
+ /* Note HDMI and DP share hotplug bits */
+ /* enable bits are the same for all generations */
+ list_for_each_entry(intel_encoder, &mode_config->encoder_list, base.head)
+ if (dev_priv->hpd_stats[intel_encoder->hpd_pin].hpd_mark == HPD_ENABLED)
+ hotplug_en |= hpd_mask_i915[intel_encoder->hpd_pin];
/* Programming the CRT detection parameters tends
to generate a spurious hotplug event about three
seconds later. So just do it once.
- */
+ */
if (IS_G4X(dev))
hotplug_en |= CRT_HOTPLUG_ACTIVATION_PERIOD_64;
+ hotplug_en &= ~CRT_HOTPLUG_VOLTAGE_COMPARE_MASK;
hotplug_en |= CRT_HOTPLUG_VOLTAGE_COMPARE_50;
- }
-
- /* Ignore TV since it's buggy */
- I915_WRITE(PORT_HOTPLUG_EN, hotplug_en);
+ /* Ignore TV since it's buggy */
+ I915_WRITE(PORT_HOTPLUG_EN, hotplug_en);
+ }
}
static irqreturn_t i965_irq_handler(int irq, void *arg)
unsigned long irqflags;
int irq_received;
int ret = IRQ_NONE, pipe;
+ u32 flip_mask =
+ I915_DISPLAY_PLANE_A_FLIP_PENDING_INTERRUPT |
+ I915_DISPLAY_PLANE_B_FLIP_PENDING_INTERRUPT;
atomic_inc(&dev_priv->irq_received);
for (;;) {
bool blc_event = false;
- irq_received = iir != 0;
+ irq_received = (iir & ~flip_mask) != 0;
/* Can't rely on pipestat interrupt bit in iir as it might
* have been cleared after the pipestat interrupt was received.
/* Consume port. Then clear IIR or we'll miss events */
if (iir & I915_DISPLAY_PORT_INTERRUPT) {
u32 hotplug_status = I915_READ(PORT_HOTPLUG_STAT);
+ u32 hotplug_trigger = hotplug_status & (IS_G4X(dev) ?
+ HOTPLUG_INT_STATUS_G4X :
+ HOTPLUG_INT_STATUS_I965);
DRM_DEBUG_DRIVER("hotplug event received, stat 0x%08x\n",
hotplug_status);
- if (hotplug_status & dev_priv->hotplug_supported_mask)
+ if (hotplug_trigger) {
+ if (hotplug_irq_storm_detect(dev, hotplug_trigger,
+ IS_G4X(dev) ? hpd_status_gen4 : hpd_status_i965))
+ i915_hpd_irq_setup(dev);
queue_work(dev_priv->wq,
&dev_priv->hotplug_work);
-
+ }
I915_WRITE(PORT_HOTPLUG_STAT, hotplug_status);
I915_READ(PORT_HOTPLUG_STAT);
}
- I915_WRITE(IIR, iir);
+ I915_WRITE(IIR, iir & ~flip_mask);
new_iir = I915_READ(IIR); /* Flush posted writes */
if (iir & I915_USER_INTERRUPT)
if (iir & I915_BSD_USER_INTERRUPT)
notify_ring(dev, &dev_priv->ring[VCS]);
- if (iir & I915_DISPLAY_PLANE_A_FLIP_PENDING_INTERRUPT)
- intel_prepare_page_flip(dev, 0);
-
- if (iir & I915_DISPLAY_PLANE_B_FLIP_PENDING_INTERRUPT)
- intel_prepare_page_flip(dev, 1);
-
for_each_pipe(pipe) {
if (pipe_stats[pipe] & PIPE_START_VBLANK_INTERRUPT_STATUS &&
- drm_handle_vblank(dev, pipe)) {
- i915_pageflip_stall_check(dev, pipe);
- intel_finish_page_flip(dev, pipe);
- }
+ i915_handle_vblank(dev, pipe, pipe, iir))
+ flip_mask &= ~DISPLAY_PLANE_FLIP_PENDING(pipe);
if (pipe_stats[pipe] & PIPE_LEGACY_BLC_EVENT_STATUS)
blc_event = true;
if (!dev_priv)
return;
+ del_timer_sync(&dev_priv->hotplug_reenable_timer);
+
I915_WRITE(PORT_HOTPLUG_EN, 0);
I915_WRITE(PORT_HOTPLUG_STAT, I915_READ(PORT_HOTPLUG_STAT));
I915_WRITE(IIR, I915_READ(IIR));
}
+static void i915_reenable_hotplug_timer_func(unsigned long data)
+{
+ drm_i915_private_t *dev_priv = (drm_i915_private_t *)data;
+ struct drm_device *dev = dev_priv->dev;
+ struct drm_mode_config *mode_config = &dev->mode_config;
+ unsigned long irqflags;
+ int i;
+
+ spin_lock_irqsave(&dev_priv->irq_lock, irqflags);
+ for (i = (HPD_NONE + 1); i < HPD_NUM_PINS; i++) {
+ struct drm_connector *connector;
+
+ if (dev_priv->hpd_stats[i].hpd_mark != HPD_DISABLED)
+ continue;
+
+ dev_priv->hpd_stats[i].hpd_mark = HPD_ENABLED;
+
+ list_for_each_entry(connector, &mode_config->connector_list, head) {
+ struct intel_connector *intel_connector = to_intel_connector(connector);
+
+ if (intel_connector->encoder->hpd_pin == i) {
+ if (connector->polled != intel_connector->polled)
+ DRM_DEBUG_DRIVER("Reenabling HPD on connector %s\n",
+ drm_get_connector_name(connector));
+ connector->polled = intel_connector->polled;
+ if (!connector->polled)
+ connector->polled = DRM_CONNECTOR_POLL_HPD;
+ }
+ }
+ }
+ if (dev_priv->display.hpd_irq_setup)
+ dev_priv->display.hpd_irq_setup(dev);
+ spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags);
+}
+
void intel_irq_init(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = dev->dev_private;
setup_timer(&dev_priv->gpu_error.hangcheck_timer,
i915_hangcheck_elapsed,
(unsigned long) dev);
+ setup_timer(&dev_priv->hotplug_reenable_timer, i915_reenable_hotplug_timer_func,
+ (unsigned long) dev_priv);
pm_qos_add_request(&dev_priv->pm_qos, PM_QOS_CPU_DMA_LATENCY, PM_QOS_DEFAULT_VALUE);
dev->driver->irq_uninstall = valleyview_irq_uninstall;
dev->driver->enable_vblank = valleyview_enable_vblank;
dev->driver->disable_vblank = valleyview_disable_vblank;
- dev_priv->display.hpd_irq_setup = valleyview_hpd_irq_setup;
+ dev_priv->display.hpd_irq_setup = i915_hpd_irq_setup;
} else if (IS_IVYBRIDGE(dev) || IS_HASWELL(dev)) {
/* Share pre & uninstall handlers with ILK/SNB */
dev->driver->irq_handler = ivybridge_irq_handler;
dev->driver->irq_uninstall = ironlake_irq_uninstall;
dev->driver->enable_vblank = ivybridge_enable_vblank;
dev->driver->disable_vblank = ivybridge_disable_vblank;
+ dev_priv->display.hpd_irq_setup = ibx_hpd_irq_setup;
} else if (HAS_PCH_SPLIT(dev)) {
dev->driver->irq_handler = ironlake_irq_handler;
dev->driver->irq_preinstall = ironlake_irq_preinstall;
dev->driver->irq_uninstall = ironlake_irq_uninstall;
dev->driver->enable_vblank = ironlake_enable_vblank;
dev->driver->disable_vblank = ironlake_disable_vblank;
+ dev_priv->display.hpd_irq_setup = ibx_hpd_irq_setup;
} else {
if (INTEL_INFO(dev)->gen == 2) {
dev->driver->irq_preinstall = i8xx_irq_preinstall;
dev->driver->irq_postinstall = i965_irq_postinstall;
dev->driver->irq_uninstall = i965_irq_uninstall;
dev->driver->irq_handler = i965_irq_handler;
- dev_priv->display.hpd_irq_setup = i965_hpd_irq_setup;
+ dev_priv->display.hpd_irq_setup = i915_hpd_irq_setup;
}
dev->driver->enable_vblank = i915_enable_vblank;
dev->driver->disable_vblank = i915_disable_vblank;
void intel_hpd_init(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = dev->dev_private;
+ struct drm_mode_config *mode_config = &dev->mode_config;
+ struct drm_connector *connector;
+ int i;
+ for (i = 1; i < HPD_NUM_PINS; i++) {
+ dev_priv->hpd_stats[i].hpd_cnt = 0;
+ dev_priv->hpd_stats[i].hpd_mark = HPD_ENABLED;
+ }
+ list_for_each_entry(connector, &mode_config->connector_list, head) {
+ struct intel_connector *intel_connector = to_intel_connector(connector);
+ connector->polled = intel_connector->polled;
+ if (!connector->polled && I915_HAS_HOTPLUG(dev) && intel_connector->encoder->hpd_pin > HPD_NONE)
+ connector->polled = DRM_CONNECTOR_POLL_HPD;
+ }
if (dev_priv->display.hpd_irq_setup)
dev_priv->display.hpd_irq_setup(dev);
}
projects / ~andy / linux / blobdiff