[Intel-gfx] [03/11 v3] drm/i915/guc: Add onion teardown to the GuC setup
Oscar Mateo
oscar.mateo at intel.com
Fri Mar 10 16:28:50 UTC 2017
Starting with intel_guc_loader, down to intel_guc_submission
and finally to intel_guc_log.
v2:
- Null execbuf client outside guc_client_free (Daniele)
- Assert if things try to get allocated twice (Daniele/Joonas)
- Null guc->log.buf_addr when destroyed (Daniele)
- Newline between returning success and error labels (Joonas)
- Remove some unnecessary comments (Joonas)
- Keep guc_log_create_extras naming convention (Joonas)
- Helper function guc_log_has_extras (Joonas)
- No need for separate relay_channel create/destroy. It's just another extra.
- No need to nullify guc->log.flush_wq when destroyed (Joonas)
- Hoist the check for has_extras out of guc_log_create_extras (Joonas)
- Try to do i915_guc_log_register/unregister calls (kind of) symmetric (Daniele)
- Make sure initel_guc_fini is not called before init is ever called (Daniele)
v3:
- Remove unnecessary parenthesis (Joonas)
- Check for logs enabled on debugfs registration
- Rebase on top of Tvrtko's "Fix request re-submission after reset"
Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio at intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen at linux.intel.com>
Signed-off-by: Oscar Mateo <oscar.mateo at intel.com>
---
drivers/gpu/drm/i915/i915_drv.c | 7 +-
drivers/gpu/drm/i915/i915_guc_submission.c | 94 ++++----
drivers/gpu/drm/i915/intel_guc_loader.c | 32 +--
drivers/gpu/drm/i915/intel_guc_log.c | 362 ++++++++++++++---------------
drivers/gpu/drm/i915/intel_uc.h | 8 +-
5 files changed, 261 insertions(+), 242 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
index b1e9027..3329507 100644
--- a/drivers/gpu/drm/i915/i915_drv.c
+++ b/drivers/gpu/drm/i915/i915_drv.c
@@ -549,6 +549,8 @@ static bool i915_switcheroo_can_switch(struct pci_dev *pdev)
static void i915_gem_fini(struct drm_i915_private *dev_priv)
{
mutex_lock(&dev_priv->drm.struct_mutex);
+ if (i915.enable_guc_submission)
+ intel_guc_cleanup(dev_priv);
i915_gem_cleanup_engines(dev_priv);
i915_gem_context_fini(dev_priv);
mutex_unlock(&dev_priv->drm.struct_mutex);
@@ -612,7 +614,7 @@ static int i915_load_modeset_init(struct drm_device *dev)
ret = i915_gem_init(dev_priv);
if (ret)
- goto cleanup_irq;
+ goto cleanup_uc;
intel_modeset_gem_init(dev);
@@ -634,9 +636,10 @@ static int i915_load_modeset_init(struct drm_device *dev)
if (i915_gem_suspend(dev_priv))
DRM_ERROR("failed to idle hardware; continuing to unload!\n");
i915_gem_fini(dev_priv);
-cleanup_irq:
+cleanup_uc:
intel_guc_fini(dev_priv);
intel_huc_fini(dev_priv);
+cleanup_irq:
drm_irq_uninstall(dev);
intel_teardown_gmbus(dev_priv);
cleanup_csr:
diff --git a/drivers/gpu/drm/i915/i915_guc_submission.c b/drivers/gpu/drm/i915/i915_guc_submission.c
index 843c73a..f33c659 100644
--- a/drivers/gpu/drm/i915/i915_guc_submission.c
+++ b/drivers/gpu/drm/i915/i915_guc_submission.c
@@ -809,7 +809,6 @@ static int guc_init_doorbell_hw(struct intel_guc *guc)
ida_simple_remove(&guc->ctx_ids, client->ctx_index);
err_client:
kfree(client);
-
return ERR_PTR(ret);
}
@@ -835,7 +834,7 @@ static void guc_policies_init(struct guc_policies *policies)
policies->is_valid = 1;
}
-static void guc_addon_create(struct intel_guc *guc)
+static int guc_addon_create(struct intel_guc *guc)
{
struct drm_i915_private *dev_priv = guc_to_i915(guc);
struct i915_vma *vma;
@@ -847,19 +846,18 @@ static void guc_addon_create(struct intel_guc *guc)
struct page *page;
u32 size;
+ GEM_BUG_ON(guc->ads_vma);
+
/* The ads obj includes the struct itself and buffers passed to GuC */
size = sizeof(struct guc_ads) + sizeof(struct guc_policies) +
sizeof(struct guc_mmio_reg_state) +
GUC_S3_SAVE_SPACE_PAGES * PAGE_SIZE;
- vma = guc->ads_vma;
- if (!vma) {
- vma = intel_guc_allocate_vma(guc, PAGE_ALIGN(size));
- if (IS_ERR(vma))
- return;
+ vma = intel_guc_allocate_vma(guc, PAGE_ALIGN(size));
+ if (IS_ERR(vma))
+ return PTR_ERR(vma);
- guc->ads_vma = vma;
- }
+ guc->ads_vma = vma;
page = i915_vma_first_page(vma);
ads = kmap(page);
@@ -902,6 +900,13 @@ static void guc_addon_create(struct intel_guc *guc)
sizeof(struct guc_mmio_reg_state);
kunmap(page);
+
+ return 0;
+}
+
+static void guc_addon_destroy(struct intel_guc *guc)
+{
+ i915_vma_unpin_and_release(&guc->ads_vma);
}
/*
@@ -916,6 +921,7 @@ int i915_guc_submission_init(struct drm_i915_private *dev_priv)
struct intel_guc *guc = &dev_priv->guc;
struct i915_vma *vma;
void *vaddr;
+ int ret;
if (!HAS_GUC_SCHED(dev_priv))
return 0;
@@ -925,10 +931,10 @@ int i915_guc_submission_init(struct drm_i915_private *dev_priv)
i915_guc_submission_disable(dev_priv);
if (!i915.enable_guc_submission)
- return 0; /* not enabled */
+ return 0;
if (guc->ctx_pool)
- return 0; /* already allocated */
+ return 0;
vma = intel_guc_allocate_vma(guc, gemsize);
if (IS_ERR(vma))
@@ -936,15 +942,23 @@ int i915_guc_submission_init(struct drm_i915_private *dev_priv)
guc->ctx_pool = vma;
- vaddr = i915_gem_object_pin_map(vma->obj, I915_MAP_WB);
- if (IS_ERR(vaddr))
- goto err;
+ vaddr = i915_gem_object_pin_map(guc->ctx_pool->obj, I915_MAP_WB);
+ if (IS_ERR(vaddr)) {
+ ret = PTR_ERR(vaddr);
+ goto err_vma;
+ }
guc->ctx_pool_vaddr = vaddr;
+ ret = intel_guc_log_create(guc);
+ if (ret < 0)
+ goto err_vaddr;
+
+ ret = guc_addon_create(guc);
+ if (ret < 0)
+ goto err_log;
+
ida_init(&guc->ctx_ids);
- intel_guc_log_create(guc);
- guc_addon_create(guc);
guc->execbuf_client = guc_client_alloc(dev_priv,
INTEL_INFO(dev_priv)->ring_mask,
@@ -952,14 +966,34 @@ int i915_guc_submission_init(struct drm_i915_private *dev_priv)
dev_priv->kernel_context);
if (IS_ERR(guc->execbuf_client)) {
DRM_ERROR("Failed to create GuC client for execbuf!\n");
- goto err;
+ ret = PTR_ERR(guc->execbuf_client);
+ goto err_ads;
}
return 0;
-err:
- i915_guc_submission_fini(dev_priv);
- return -ENOMEM;
+err_ads:
+ guc_addon_destroy(guc);
+err_log:
+ intel_guc_log_destroy(guc);
+err_vaddr:
+ i915_gem_object_unpin_map(guc->ctx_pool->obj);
+err_vma:
+ i915_vma_unpin_and_release(&guc->ctx_pool);
+ return ret;
+}
+
+void i915_guc_submission_fini(struct drm_i915_private *dev_priv)
+{
+ struct intel_guc *guc = &dev_priv->guc;
+
+ guc_client_free(guc->execbuf_client);
+ guc->execbuf_client = NULL;
+ ida_destroy(&guc->ctx_ids);
+ guc_addon_destroy(guc);
+ intel_guc_log_destroy(guc);
+ i915_gem_object_unpin_map(guc->ctx_pool->obj);
+ i915_vma_unpin_and_release(&guc->ctx_pool);
}
static void guc_reset_wq(struct i915_guc_client *client)
@@ -1053,26 +1087,6 @@ void i915_guc_submission_disable(struct drm_i915_private *dev_priv)
intel_execlists_enable_submission(dev_priv);
}
-void i915_guc_submission_fini(struct drm_i915_private *dev_priv)
-{
- struct intel_guc *guc = &dev_priv->guc;
- struct i915_guc_client *client;
-
- client = fetch_and_zero(&guc->execbuf_client);
- if (client && !IS_ERR(client))
- guc_client_free(client);
-
- i915_vma_unpin_and_release(&guc->ads_vma);
- i915_vma_unpin_and_release(&guc->log.vma);
-
- if (guc->ctx_pool_vaddr) {
- ida_destroy(&guc->ctx_ids);
- i915_gem_object_unpin_map(guc->ctx_pool->obj);
- }
-
- i915_vma_unpin_and_release(&guc->ctx_pool);
-}
-
/**
* intel_guc_suspend() - notify GuC entering suspend state
* @dev_priv: i915 device private
diff --git a/drivers/gpu/drm/i915/intel_guc_loader.c b/drivers/gpu/drm/i915/intel_guc_loader.c
index b1ebfce..f9e183a 100644
--- a/drivers/gpu/drm/i915/intel_guc_loader.c
+++ b/drivers/gpu/drm/i915/intel_guc_loader.c
@@ -443,7 +443,7 @@ int intel_guc_setup(struct drm_i915_private *dev_priv)
err = i915_guc_submission_init(dev_priv);
if (err)
- goto fail;
+ goto err_guc;
/*
* WaEnableuKernelHeaderValidFix:skl,bxt
@@ -458,7 +458,7 @@ int intel_guc_setup(struct drm_i915_private *dev_priv)
*/
err = guc_hw_reset(dev_priv);
if (err)
- goto fail;
+ goto err_submission;
intel_huc_load(dev_priv);
err = guc_ucode_xfer(dev_priv);
@@ -466,7 +466,7 @@ int intel_guc_setup(struct drm_i915_private *dev_priv)
break;
if (--retries == 0)
- goto fail;
+ goto err_submission;
DRM_INFO("GuC fw load failed: %d; will reset and "
"retry %d more time(s)\n", err, retries);
@@ -482,7 +482,7 @@ int intel_guc_setup(struct drm_i915_private *dev_priv)
err = i915_guc_submission_enable(dev_priv);
if (err)
- goto fail;
+ goto err_interrupts;
}
DRM_INFO("GuC %s (firmware %s [version %u.%u])\n",
@@ -492,15 +492,16 @@ int intel_guc_setup(struct drm_i915_private *dev_priv)
return 0;
+err_interrupts:
+ gen9_disable_guc_interrupts(dev_priv);
+err_submission:
+ i915_guc_submission_fini(dev_priv);
+err_guc:
+ i915_ggtt_disable_guc(dev_priv);
fail:
if (guc_fw->load_status == INTEL_UC_FIRMWARE_PENDING)
guc_fw->load_status = INTEL_UC_FIRMWARE_FAIL;
- guc_interrupts_release(dev_priv);
- i915_guc_submission_disable(dev_priv);
- i915_guc_submission_fini(dev_priv);
- i915_ggtt_disable_guc(dev_priv);
-
/*
* We've failed to load the firmware :(
*
@@ -540,6 +541,13 @@ int intel_guc_setup(struct drm_i915_private *dev_priv)
return ret;
}
+void intel_guc_cleanup(struct drm_i915_private *dev_priv)
+{
+ gen9_disable_guc_interrupts(dev_priv);
+ i915_guc_submission_fini(dev_priv);
+ i915_ggtt_disable_guc(dev_priv);
+}
+
void intel_uc_fw_fetch(struct drm_i915_private *dev_priv,
struct intel_uc_fw *uc_fw)
{
@@ -745,12 +753,6 @@ void intel_guc_fini(struct drm_i915_private *dev_priv)
struct intel_uc_fw *guc_fw = &dev_priv->guc.fw;
struct drm_i915_gem_object *obj;
- mutex_lock(&dev_priv->drm.struct_mutex);
- guc_interrupts_release(dev_priv);
- i915_guc_submission_disable(dev_priv);
- i915_guc_submission_fini(dev_priv);
- mutex_unlock(&dev_priv->drm.struct_mutex);
-
obj = fetch_and_zero(&guc_fw->obj);
if (obj)
i915_gem_object_put(obj);
diff --git a/drivers/gpu/drm/i915/intel_guc_log.c b/drivers/gpu/drm/i915/intel_guc_log.c
index 5c0f9a4..3b1644b 100644
--- a/drivers/gpu/drm/i915/intel_guc_log.c
+++ b/drivers/gpu/drm/i915/intel_guc_log.c
@@ -66,7 +66,6 @@ static int guc_log_control(struct intel_guc *guc, u32 control_val)
return intel_guc_send(guc, action, ARRAY_SIZE(action));
}
-
/*
* Sub buffer switch callback. Called whenever relay has to switch to a new
* sub buffer, relay stays on the same sub buffer if 0 is returned.
@@ -139,45 +138,15 @@ static int remove_buf_file_callback(struct dentry *dentry)
.remove_buf_file = remove_buf_file_callback,
};
-static void guc_log_remove_relay_file(struct intel_guc *guc)
-{
- relay_close(guc->log.relay_chan);
-}
-
-static int guc_log_create_relay_channel(struct intel_guc *guc)
-{
- struct drm_i915_private *dev_priv = guc_to_i915(guc);
- struct rchan *guc_log_relay_chan;
- size_t n_subbufs, subbuf_size;
-
- /* Keep the size of sub buffers same as shared log buffer */
- subbuf_size = guc->log.vma->obj->base.size;
-
- /* Store up to 8 snapshots, which is large enough to buffer sufficient
- * boot time logs and provides enough leeway to User, in terms of
- * latency, for consuming the logs from relay. Also doesn't take
- * up too much memory.
- */
- n_subbufs = 8;
-
- guc_log_relay_chan = relay_open(NULL, NULL, subbuf_size,
- n_subbufs, &relay_callbacks, dev_priv);
- if (!guc_log_relay_chan) {
- DRM_ERROR("Couldn't create relay chan for GuC logging\n");
- return -ENOMEM;
- }
-
- GEM_BUG_ON(guc_log_relay_chan->subbuf_size < subbuf_size);
- guc->log.relay_chan = guc_log_relay_chan;
- return 0;
-}
-
-static int guc_log_create_relay_file(struct intel_guc *guc)
+static int guc_log_relay_file_create(struct intel_guc *guc)
{
struct drm_i915_private *dev_priv = guc_to_i915(guc);
struct dentry *log_dir;
int ret;
+ if (i915.guc_log_level < 0)
+ return 0;
+
/* For now create the log file in /sys/kernel/debug/dri/0 dir */
log_dir = dev_priv->drm.primary->debugfs_root;
@@ -198,7 +167,7 @@ static int guc_log_create_relay_file(struct intel_guc *guc)
}
ret = relay_late_setup_files(guc->log.relay_chan, "guc_log", log_dir);
- if (ret) {
+ if (ret < 0 && ret != -EEXIST) {
DRM_ERROR("Couldn't associate relay chan with file %d\n", ret);
return ret;
}
@@ -371,31 +340,6 @@ static void guc_read_update_log_buffer(struct intel_guc *guc)
}
}
-static void guc_log_cleanup(struct intel_guc *guc)
-{
- struct drm_i915_private *dev_priv = guc_to_i915(guc);
-
- lockdep_assert_held(&dev_priv->drm.struct_mutex);
-
- /* First disable the flush interrupt */
- gen9_disable_guc_interrupts(dev_priv);
-
- if (guc->log.flush_wq)
- destroy_workqueue(guc->log.flush_wq);
-
- guc->log.flush_wq = NULL;
-
- if (guc->log.relay_chan)
- guc_log_remove_relay_file(guc);
-
- guc->log.relay_chan = NULL;
-
- if (guc->log.buf_addr)
- i915_gem_object_unpin_map(guc->log.vma->obj);
-
- guc->log.buf_addr = NULL;
-}
-
static void capture_logs_work(struct work_struct *work)
{
struct intel_guc *guc =
@@ -404,120 +348,105 @@ static void capture_logs_work(struct work_struct *work)
guc_log_capture_logs(guc);
}
+static bool guc_log_has_extras(struct intel_guc *guc)
+{
+ return guc->log.buf_addr != NULL;
+}
+
static int guc_log_create_extras(struct intel_guc *guc)
{
struct drm_i915_private *dev_priv = guc_to_i915(guc);
void *vaddr;
- int ret;
+ struct rchan *guc_log_relay_chan;
+ size_t n_subbufs, subbuf_size;
+ int ret = 0;
lockdep_assert_held(&dev_priv->drm.struct_mutex);
- /* Nothing to do */
- if (i915.guc_log_level < 0)
- return 0;
-
- if (!guc->log.buf_addr) {
- /* Create a WC (Uncached for read) vmalloc mapping of log
- * buffer pages, so that we can directly get the data
- * (up-to-date) from memory.
- */
- vaddr = i915_gem_object_pin_map(guc->log.vma->obj, I915_MAP_WC);
- if (IS_ERR(vaddr)) {
- ret = PTR_ERR(vaddr);
- DRM_ERROR("Couldn't map log buffer pages %d\n", ret);
- return ret;
- }
-
- guc->log.buf_addr = vaddr;
- }
+ GEM_BUG_ON(guc_log_has_extras(guc));
- if (!guc->log.relay_chan) {
- /* Create a relay channel, so that we have buffers for storing
- * the GuC firmware logs, the channel will be linked with a file
- * later on when debugfs is registered.
- */
- ret = guc_log_create_relay_channel(guc);
- if (ret)
- return ret;
+ /* Create a WC (Uncached for read) vmalloc mapping of log
+ * buffer pages, so that we can directly get the data
+ * (up-to-date) from memory.
+ */
+ vaddr = i915_gem_object_pin_map(guc->log.vma->obj, I915_MAP_WC);
+ if (IS_ERR(vaddr)) {
+ DRM_ERROR("Couldn't map log buffer pages %d\n", ret);
+ return PTR_ERR(vaddr);
}
- if (!guc->log.flush_wq) {
- INIT_WORK(&guc->log.flush_work, capture_logs_work);
-
- /*
- * GuC log buffer flush work item has to do register access to
- * send the ack to GuC and this work item, if not synced before
- * suspend, can potentially get executed after the GFX device is
- * suspended.
- * By marking the WQ as freezable, we don't have to bother about
- * flushing of this work item from the suspend hooks, the pending
- * work item if any will be either executed before the suspend
- * or scheduled later on resume. This way the handling of work
- * item can be kept same between system suspend & rpm suspend.
- */
- guc->log.flush_wq = alloc_ordered_workqueue("i915-guc_log",
- WQ_HIGHPRI | WQ_FREEZABLE);
- if (guc->log.flush_wq == NULL) {
- DRM_ERROR("Couldn't allocate the wq for GuC logging\n");
- return -ENOMEM;
- }
- }
+ guc->log.buf_addr = vaddr;
- return 0;
-}
+ /* Keep the size of sub buffers same as shared log buffer */
+ subbuf_size = guc->log.vma->obj->base.size;
-void intel_guc_log_create(struct intel_guc *guc)
-{
- struct i915_vma *vma;
- unsigned long offset;
- uint32_t size, flags;
+ /* Store up to 8 snapshots, which is large enough to buffer sufficient
+ * boot time logs and provides enough leeway to User, in terms of
+ * latency, for consuming the logs from relay. Also doesn't take
+ * up too much memory.
+ */
+ n_subbufs = 8;
- if (i915.guc_log_level > GUC_LOG_VERBOSITY_MAX)
- i915.guc_log_level = GUC_LOG_VERBOSITY_MAX;
+ /* Create a relay channel, so that we have buffers for storing
+ * the GuC firmware logs, the channel will be linked with a file
+ * later on when debugfs is registered.
+ */
+ guc_log_relay_chan = relay_open(NULL, NULL, subbuf_size,
+ n_subbufs, &relay_callbacks, dev_priv);
+ if (!guc_log_relay_chan) {
+ DRM_ERROR("Couldn't create relay chan for GuC logging\n");
- /* The first page is to save log buffer state. Allocate one
- * extra page for others in case for overlap */
- size = (1 + GUC_LOG_DPC_PAGES + 1 +
- GUC_LOG_ISR_PAGES + 1 +
- GUC_LOG_CRASH_PAGES + 1) << PAGE_SHIFT;
+ ret = -ENOMEM;
+ goto err_vaddr;
+ }
- vma = guc->log.vma;
- if (!vma) {
- /* We require SSE 4.1 for fast reads from the GuC log buffer and
- * it should be present on the chipsets supporting GuC based
- * submisssions.
- */
- if (WARN_ON(!i915_has_memcpy_from_wc())) {
- /* logging will not be enabled */
- i915.guc_log_level = -1;
- return;
- }
+ GEM_BUG_ON(guc_log_relay_chan->subbuf_size < subbuf_size);
+ guc->log.relay_chan = guc_log_relay_chan;
- vma = intel_guc_allocate_vma(guc, size);
- if (IS_ERR(vma)) {
- /* logging will be off */
- i915.guc_log_level = -1;
- return;
- }
+ INIT_WORK(&guc->log.flush_work, capture_logs_work);
+
+ /*
+ * GuC log buffer flush work item has to do register access to
+ * send the ack to GuC and this work item, if not synced before
+ * suspend, can potentially get executed after the GFX device is
+ * suspended.
+ * By marking the WQ as freezable, we don't have to bother about
+ * flushing of this work item from the suspend hooks, the pending
+ * work item if any will be either executed before the suspend
+ * or scheduled later on resume. This way the handling of work
+ * item can be kept same between system suspend & rpm suspend.
+ */
+ guc->log.flush_wq = alloc_ordered_workqueue("i915-guc_log",
+ WQ_HIGHPRI | WQ_FREEZABLE);
+ if (!guc->log.flush_wq) {
+ DRM_ERROR("Couldn't allocate the wq for GuC logging\n");
+ ret = -ENOMEM;
+ goto err_relaychan;
+ }
- guc->log.vma = vma;
+ return 0;
- if (guc_log_create_extras(guc)) {
- guc_log_cleanup(guc);
- i915_vma_unpin_and_release(&guc->log.vma);
- i915.guc_log_level = -1;
- return;
- }
- }
+err_relaychan:
+ relay_close(guc->log.relay_chan);
+err_vaddr:
+ i915_gem_object_unpin_map(guc->log.vma->obj);
+ guc->log.buf_addr = NULL;
+ return ret;
+}
- /* each allocated unit is a page */
- flags = GUC_LOG_VALID | GUC_LOG_NOTIFY_ON_HALF_FULL |
- (GUC_LOG_DPC_PAGES << GUC_LOG_DPC_SHIFT) |
- (GUC_LOG_ISR_PAGES << GUC_LOG_ISR_SHIFT) |
- (GUC_LOG_CRASH_PAGES << GUC_LOG_CRASH_SHIFT);
+static void guc_log_destroy_extras(struct intel_guc *guc)
+{
+ /*
+ * It's possible that extras were never allocated because guc_log_level
+ * was < 0 at the time
+ **/
+ if (!guc_log_has_extras(guc))
+ return;
- offset = guc_ggtt_offset(vma) >> PAGE_SHIFT; /* in pages */
- guc->log.flags = (offset << GUC_LOG_BUF_ADDR_SHIFT) | flags;
+ destroy_workqueue(guc->log.flush_wq);
+ relay_close(guc->log.relay_chan);
+ i915_gem_object_unpin_map(guc->log.vma->obj);
+ guc->log.buf_addr = NULL;
}
static int guc_log_late_setup(struct intel_guc *guc)
@@ -527,24 +456,25 @@ static int guc_log_late_setup(struct intel_guc *guc)
lockdep_assert_held(&dev_priv->drm.struct_mutex);
- if (i915.guc_log_level < 0)
- return -EINVAL;
+ if (!guc_log_has_extras(guc)) {
+ /* If log_level was set as -1 at boot time, then setup needed to
+ * handle log buffer flush interrupts would not have been done yet,
+ * so do that now.
+ */
+ ret = guc_log_create_extras(guc);
+ if (ret)
+ goto err;
+ }
- /* If log_level was set as -1 at boot time, then setup needed to
- * handle log buffer flush interrupts would not have been done yet,
- * so do that now.
- */
- ret = guc_log_create_extras(guc);
+ ret = guc_log_relay_file_create(guc);
if (ret)
- goto err;
-
- ret = guc_log_create_relay_file(guc);
- if (ret)
- goto err;
+ goto err_extras;
return 0;
+
+err_extras:
+ guc_log_destroy_extras(guc);
err:
- guc_log_cleanup(guc);
/* logging will remain off */
i915.guc_log_level = -1;
return ret;
@@ -586,6 +516,72 @@ static void guc_flush_logs(struct intel_guc *guc)
guc_log_capture_logs(guc);
}
+int intel_guc_log_create(struct intel_guc *guc)
+{
+ struct i915_vma *vma;
+ unsigned long offset;
+ uint32_t size, flags;
+ int ret;
+
+ GEM_BUG_ON(guc->log.vma);
+
+ if (i915.guc_log_level > GUC_LOG_VERBOSITY_MAX)
+ i915.guc_log_level = GUC_LOG_VERBOSITY_MAX;
+
+ /* The first page is to save log buffer state. Allocate one
+ * extra page for others in case for overlap */
+ size = (1 + GUC_LOG_DPC_PAGES + 1 +
+ GUC_LOG_ISR_PAGES + 1 +
+ GUC_LOG_CRASH_PAGES + 1) << PAGE_SHIFT;
+
+ /* We require SSE 4.1 for fast reads from the GuC log buffer and
+ * it should be present on the chipsets supporting GuC based
+ * submisssions.
+ */
+ if (WARN_ON(!i915_has_memcpy_from_wc())) {
+ ret = -EINVAL;
+ goto err;
+ }
+
+ vma = intel_guc_allocate_vma(guc, size);
+ if (IS_ERR(vma)) {
+ ret = PTR_ERR(vma);
+ goto err;
+ }
+
+ guc->log.vma = vma;
+
+ if (i915.guc_log_level >= 0) {
+ ret = guc_log_create_extras(guc);
+ if (ret < 0)
+ goto err_vma;
+ }
+
+ /* each allocated unit is a page */
+ flags = GUC_LOG_VALID | GUC_LOG_NOTIFY_ON_HALF_FULL |
+ (GUC_LOG_DPC_PAGES << GUC_LOG_DPC_SHIFT) |
+ (GUC_LOG_ISR_PAGES << GUC_LOG_ISR_SHIFT) |
+ (GUC_LOG_CRASH_PAGES << GUC_LOG_CRASH_SHIFT);
+
+ offset = guc_ggtt_offset(vma) >> PAGE_SHIFT; /* in pages */
+ guc->log.flags = (offset << GUC_LOG_BUF_ADDR_SHIFT) | flags;
+
+ return 0;
+
+err_vma:
+ i915_vma_unpin_and_release(&guc->log.vma);
+err:
+ /* logging will be off */
+ i915.guc_log_level = -1;
+ return ret;
+}
+
+void intel_guc_log_destroy(struct intel_guc *guc)
+{
+ guc_log_destroy_extras(guc);
+ i915_vma_unpin_and_release(&guc->log.vma);
+}
+
int i915_guc_log_control(struct drm_i915_private *dev_priv, u64 control_val)
{
struct intel_guc *guc = &dev_priv->guc;
@@ -609,17 +605,21 @@ int i915_guc_log_control(struct drm_i915_private *dev_priv, u64 control_val)
return ret;
}
- i915.guc_log_level = log_param.verbosity;
+ if (log_param.logging_enabled) {
+ i915.guc_log_level = log_param.verbosity;
- /* If log_level was set as -1 at boot time, then the relay channel file
- * wouldn't have been created by now and interrupts also would not have
- * been enabled.
- */
- if (!dev_priv->guc.log.relay_chan) {
+ /* If log_level was set as -1 at boot time, then the relay channel file
+ * wouldn't have been created by now and interrupts also would not have
+ * been enabled. Try again now, just in case.
+ */
ret = guc_log_late_setup(guc);
- if (!ret)
- gen9_enable_guc_interrupts(dev_priv);
- } else if (!log_param.logging_enabled) {
+ if (ret < 0) {
+ DRM_DEBUG_DRIVER("GuC log late setup failed %d\n", ret);
+ return ret;
+ }
+
+ gen9_enable_guc_interrupts(dev_priv);
+ } else {
/* Once logging is disabled, GuC won't generate logs & send an
* interrupt. But there could be some data in the log buffer
* which is yet to be captured. So request GuC to update the log
@@ -629,9 +629,6 @@ int i915_guc_log_control(struct drm_i915_private *dev_priv, u64 control_val)
/* As logging is disabled, update log level to reflect that */
i915.guc_log_level = -1;
- } else {
- /* In case interrupts were disabled, enable them now */
- gen9_enable_guc_interrupts(dev_priv);
}
return ret;
@@ -639,7 +636,7 @@ int i915_guc_log_control(struct drm_i915_private *dev_priv, u64 control_val)
void i915_guc_log_register(struct drm_i915_private *dev_priv)
{
- if (!i915.enable_guc_submission)
+ if (!i915.enable_guc_submission || i915.guc_log_level < 0)
return;
mutex_lock(&dev_priv->drm.struct_mutex);
@@ -653,6 +650,7 @@ void i915_guc_log_unregister(struct drm_i915_private *dev_priv)
return;
mutex_lock(&dev_priv->drm.struct_mutex);
- guc_log_cleanup(&dev_priv->guc);
+ gen9_disable_guc_interrupts(dev_priv);
+ guc_log_destroy_extras(&dev_priv->guc);
mutex_unlock(&dev_priv->drm.struct_mutex);
}
diff --git a/drivers/gpu/drm/i915/intel_uc.h b/drivers/gpu/drm/i915/intel_uc.h
index 0d12c8e..1a75ef2 100644
--- a/drivers/gpu/drm/i915/intel_uc.h
+++ b/drivers/gpu/drm/i915/intel_uc.h
@@ -190,8 +190,9 @@ struct intel_huc {
/* intel_guc_loader.c */
extern void intel_guc_init(struct drm_i915_private *dev_priv);
-extern int intel_guc_setup(struct drm_i915_private *dev_priv);
extern void intel_guc_fini(struct drm_i915_private *dev_priv);
+extern int intel_guc_setup(struct drm_i915_private *dev_priv);
+extern void intel_guc_cleanup(struct drm_i915_private *dev_priv);
extern const char *intel_uc_fw_status_repr(enum intel_uc_fw_status status);
extern int intel_guc_suspend(struct drm_i915_private *dev_priv);
extern int intel_guc_resume(struct drm_i915_private *dev_priv);
@@ -209,10 +210,11 @@ void intel_uc_fw_fetch(struct drm_i915_private *dev_priv,
struct i915_vma *intel_guc_allocate_vma(struct intel_guc *guc, u32 size);
/* intel_guc_log.c */
-void intel_guc_log_create(struct intel_guc *guc);
+int intel_guc_log_create(struct intel_guc *guc);
+void intel_guc_log_destroy(struct intel_guc *guc);
+int i915_guc_log_control(struct drm_i915_private *dev_priv, u64 control_val);
void i915_guc_log_register(struct drm_i915_private *dev_priv);
void i915_guc_log_unregister(struct drm_i915_private *dev_priv);
-int i915_guc_log_control(struct drm_i915_private *dev_priv, u64 control_val);
static inline u32 guc_ggtt_offset(struct i915_vma *vma)
{
--
1.9.1
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