diff options
Diffstat (limited to 'drivers/gpu/drm/i915/i915_irq.c')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_irq.c | 287 |
1 files changed, 280 insertions, 7 deletions
diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c index a17d6bdfe63e..ba1d8314c1ce 100644 --- a/drivers/gpu/drm/i915/i915_irq.c +++ b/drivers/gpu/drm/i915/i915_irq.c @@ -269,6 +269,57 @@ static void i915_hotplug_work_func(struct work_struct *work) drm_sysfs_hotplug_event(dev); } +static void i915_handle_rps_change(struct drm_device *dev) +{ + drm_i915_private_t *dev_priv = dev->dev_private; + u32 busy_up, busy_down, max_avg, min_avg; + u16 rgvswctl; + u8 new_delay = dev_priv->cur_delay; + + I915_WRITE(MEMINTRSTS, I915_READ(MEMINTRSTS) & ~MEMINT_EVAL_CHG); + busy_up = I915_READ(RCPREVBSYTUPAVG); + busy_down = I915_READ(RCPREVBSYTDNAVG); + max_avg = I915_READ(RCBMAXAVG); + min_avg = I915_READ(RCBMINAVG); + + /* Handle RCS change request from hw */ + if (busy_up > max_avg) { + if (dev_priv->cur_delay != dev_priv->max_delay) + new_delay = dev_priv->cur_delay - 1; + if (new_delay < dev_priv->max_delay) + new_delay = dev_priv->max_delay; + } else if (busy_down < min_avg) { + if (dev_priv->cur_delay != dev_priv->min_delay) + new_delay = dev_priv->cur_delay + 1; + if (new_delay > dev_priv->min_delay) + new_delay = dev_priv->min_delay; + } + + DRM_DEBUG("rps change requested: %d -> %d\n", + dev_priv->cur_delay, new_delay); + + rgvswctl = I915_READ(MEMSWCTL); + if (rgvswctl & MEMCTL_CMD_STS) { + DRM_ERROR("gpu busy, RCS change rejected\n"); + return; /* still busy with another command */ + } + + /* Program the new state */ + rgvswctl = (MEMCTL_CMD_CHFREQ << MEMCTL_CMD_SHIFT) | + (new_delay << MEMCTL_FREQ_SHIFT) | MEMCTL_SFCAVM; + I915_WRITE(MEMSWCTL, rgvswctl); + POSTING_READ(MEMSWCTL); + + rgvswctl |= MEMCTL_CMD_STS; + I915_WRITE(MEMSWCTL, rgvswctl); + + dev_priv->cur_delay = new_delay; + + DRM_DEBUG("rps changed\n"); + + return; +} + irqreturn_t ironlake_irq_handler(struct drm_device *dev) { drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; @@ -331,6 +382,11 @@ irqreturn_t ironlake_irq_handler(struct drm_device *dev) queue_work(dev_priv->wq, &dev_priv->hotplug_work); } + if (de_iir & DE_PCU_EVENT) { + I915_WRITE(MEMINTRSTS, I915_READ(MEMINTRSTS)); + i915_handle_rps_change(dev); + } + /* should clear PCH hotplug event before clear CPU irq */ I915_WRITE(SDEIIR, pch_iir); I915_WRITE(GTIIR, gt_iir); @@ -376,6 +432,121 @@ static void i915_error_work_func(struct work_struct *work) } } +static struct drm_i915_error_object * +i915_error_object_create(struct drm_device *dev, + struct drm_gem_object *src) +{ + struct drm_i915_error_object *dst; + struct drm_i915_gem_object *src_priv; + int page, page_count; + + if (src == NULL) + return NULL; + + src_priv = src->driver_private; + if (src_priv->pages == NULL) + return NULL; + + page_count = src->size / PAGE_SIZE; + + dst = kmalloc(sizeof(*dst) + page_count * sizeof (u32 *), GFP_ATOMIC); + if (dst == NULL) + return NULL; + + for (page = 0; page < page_count; page++) { + void *s, *d = kmalloc(PAGE_SIZE, GFP_ATOMIC); + if (d == NULL) + goto unwind; + s = kmap_atomic(src_priv->pages[page], KM_USER0); + memcpy(d, s, PAGE_SIZE); + kunmap_atomic(s, KM_USER0); + dst->pages[page] = d; + } + dst->page_count = page_count; + dst->gtt_offset = src_priv->gtt_offset; + + return dst; + +unwind: + while (page--) + kfree(dst->pages[page]); + kfree(dst); + return NULL; +} + +static void +i915_error_object_free(struct drm_i915_error_object *obj) +{ + int page; + + if (obj == NULL) + return; + + for (page = 0; page < obj->page_count; page++) + kfree(obj->pages[page]); + + kfree(obj); +} + +static void +i915_error_state_free(struct drm_device *dev, + struct drm_i915_error_state *error) +{ + i915_error_object_free(error->batchbuffer[0]); + i915_error_object_free(error->batchbuffer[1]); + i915_error_object_free(error->ringbuffer); + kfree(error->active_bo); + kfree(error); +} + +static u32 +i915_get_bbaddr(struct drm_device *dev, u32 *ring) +{ + u32 cmd; + + if (IS_I830(dev) || IS_845G(dev)) + cmd = MI_BATCH_BUFFER; + else if (IS_I965G(dev)) + cmd = (MI_BATCH_BUFFER_START | (2 << 6) | + MI_BATCH_NON_SECURE_I965); + else + cmd = (MI_BATCH_BUFFER_START | (2 << 6)); + + return ring[0] == cmd ? ring[1] : 0; +} + +static u32 +i915_ringbuffer_last_batch(struct drm_device *dev) +{ + struct drm_i915_private *dev_priv = dev->dev_private; + u32 head, bbaddr; + u32 *ring; + + /* Locate the current position in the ringbuffer and walk back + * to find the most recently dispatched batch buffer. + */ + bbaddr = 0; + head = I915_READ(PRB0_HEAD) & HEAD_ADDR; + ring = (u32 *)(dev_priv->ring.virtual_start + head); + + while (--ring >= (u32 *)dev_priv->ring.virtual_start) { + bbaddr = i915_get_bbaddr(dev, ring); + if (bbaddr) + break; + } + + if (bbaddr == 0) { + ring = (u32 *)(dev_priv->ring.virtual_start + dev_priv->ring.Size); + while (--ring >= (u32 *)dev_priv->ring.virtual_start) { + bbaddr = i915_get_bbaddr(dev, ring); + if (bbaddr) + break; + } + } + + return bbaddr; +} + /** * i915_capture_error_state - capture an error record for later analysis * @dev: drm device @@ -388,19 +559,26 @@ static void i915_error_work_func(struct work_struct *work) static void i915_capture_error_state(struct drm_device *dev) { struct drm_i915_private *dev_priv = dev->dev_private; + struct drm_i915_gem_object *obj_priv; struct drm_i915_error_state *error; + struct drm_gem_object *batchbuffer[2]; unsigned long flags; + u32 bbaddr; + int count; spin_lock_irqsave(&dev_priv->error_lock, flags); - if (dev_priv->first_error) - goto out; + error = dev_priv->first_error; + spin_unlock_irqrestore(&dev_priv->error_lock, flags); + if (error) + return; error = kmalloc(sizeof(*error), GFP_ATOMIC); if (!error) { - DRM_DEBUG_DRIVER("out ot memory, not capturing error state\n"); - goto out; + DRM_DEBUG_DRIVER("out of memory, not capturing error state\n"); + return; } + error->seqno = i915_get_gem_seqno(dev); error->eir = I915_READ(EIR); error->pgtbl_er = I915_READ(PGTBL_ER); error->pipeastat = I915_READ(PIPEASTAT); @@ -411,6 +589,7 @@ static void i915_capture_error_state(struct drm_device *dev) error->ipehr = I915_READ(IPEHR); error->instdone = I915_READ(INSTDONE); error->acthd = I915_READ(ACTHD); + error->bbaddr = 0; } else { error->ipeir = I915_READ(IPEIR_I965); error->ipehr = I915_READ(IPEHR_I965); @@ -418,14 +597,101 @@ static void i915_capture_error_state(struct drm_device *dev) error->instps = I915_READ(INSTPS); error->instdone1 = I915_READ(INSTDONE1); error->acthd = I915_READ(ACTHD_I965); + error->bbaddr = I915_READ64(BB_ADDR); } - do_gettimeofday(&error->time); + bbaddr = i915_ringbuffer_last_batch(dev); + + /* Grab the current batchbuffer, most likely to have crashed. */ + batchbuffer[0] = NULL; + batchbuffer[1] = NULL; + count = 0; + list_for_each_entry(obj_priv, &dev_priv->mm.active_list, list) { + struct drm_gem_object *obj = obj_priv->obj; + + if (batchbuffer[0] == NULL && + bbaddr >= obj_priv->gtt_offset && + bbaddr < obj_priv->gtt_offset + obj->size) + batchbuffer[0] = obj; + + if (batchbuffer[1] == NULL && + error->acthd >= obj_priv->gtt_offset && + error->acthd < obj_priv->gtt_offset + obj->size && + batchbuffer[0] != obj) + batchbuffer[1] = obj; - dev_priv->first_error = error; + count++; + } + + /* We need to copy these to an anonymous buffer as the simplest + * method to avoid being overwritten by userpace. + */ + error->batchbuffer[0] = i915_error_object_create(dev, batchbuffer[0]); + error->batchbuffer[1] = i915_error_object_create(dev, batchbuffer[1]); + + /* Record the ringbuffer */ + error->ringbuffer = i915_error_object_create(dev, dev_priv->ring.ring_obj); + + /* Record buffers on the active list. */ + error->active_bo = NULL; + error->active_bo_count = 0; + + if (count) + error->active_bo = kmalloc(sizeof(*error->active_bo)*count, + GFP_ATOMIC); + + if (error->active_bo) { + int i = 0; + list_for_each_entry(obj_priv, &dev_priv->mm.active_list, list) { + struct drm_gem_object *obj = obj_priv->obj; + + error->active_bo[i].size = obj->size; + error->active_bo[i].name = obj->name; + error->active_bo[i].seqno = obj_priv->last_rendering_seqno; + error->active_bo[i].gtt_offset = obj_priv->gtt_offset; + error->active_bo[i].read_domains = obj->read_domains; + error->active_bo[i].write_domain = obj->write_domain; + error->active_bo[i].fence_reg = obj_priv->fence_reg; + error->active_bo[i].pinned = 0; + if (obj_priv->pin_count > 0) + error->active_bo[i].pinned = 1; + if (obj_priv->user_pin_count > 0) + error->active_bo[i].pinned = -1; + error->active_bo[i].tiling = obj_priv->tiling_mode; + error->active_bo[i].dirty = obj_priv->dirty; + error->active_bo[i].purgeable = obj_priv->madv != I915_MADV_WILLNEED; + + if (++i == count) + break; + } + error->active_bo_count = i; + } -out: + do_gettimeofday(&error->time); + + spin_lock_irqsave(&dev_priv->error_lock, flags); + if (dev_priv->first_error == NULL) { + dev_priv->first_error = error; + error = NULL; + } spin_unlock_irqrestore(&dev_priv->error_lock, flags); + + if (error) + i915_error_state_free(dev, error); +} + +void i915_destroy_error_state(struct drm_device *dev) +{ + struct drm_i915_private *dev_priv = dev->dev_private; + struct drm_i915_error_state *error; + + spin_lock(&dev_priv->error_lock); + error = dev_priv->first_error; + dev_priv->first_error = NULL; + spin_unlock(&dev_priv->error_lock); + + if (error) + i915_error_state_free(dev, error); } /** @@ -1064,6 +1330,13 @@ static int ironlake_irq_postinstall(struct drm_device *dev) I915_WRITE(SDEIER, dev_priv->pch_irq_enable_reg); (void) I915_READ(SDEIER); + if (IS_IRONLAKE_M(dev)) { + /* Clear & enable PCU event interrupts */ + I915_WRITE(DEIIR, DE_PCU_EVENT); + I915_WRITE(DEIER, I915_READ(DEIER) | DE_PCU_EVENT); + ironlake_enable_display_irq(dev_priv, DE_PCU_EVENT); + } + return 0; } |
