static int guc_action_flush_log_complete(struct intel_guc *guc)
{
u32 action[] = {
- INTEL_GUC_ACTION_LOG_BUFFER_FILE_FLUSH_COMPLETE
+ INTEL_GUC_ACTION_LOG_BUFFER_FILE_FLUSH_COMPLETE,
+ GUC_DEBUG_LOG_BUFFER
};
return intel_guc_send(guc, action, ARRAY_SIZE(action));
smp_wmb();
/* All data has been written, so now move the offset of sub buffer. */
- relay_reserve(log->relay.channel, log->vma->obj->base.size);
+ relay_reserve(log->relay.channel, log->vma->obj->base.size - CAPTURE_BUFFER_SIZE);
/* Switch to the next sub buffer */
relay_flush(log->relay.channel);
goto out_unlock;
/* Get the pointer to shared GuC log buffer */
- log_buf_state = src_data = log->relay.buf_addr;
+ src_data = log->buf_addr;
+ log_buf_state = src_data;
/* Get the pointer to local buffer to store the logs */
log_buf_snapshot_state = dst_data = guc_get_write_buffer(log);
src_data += PAGE_SIZE;
dst_data += PAGE_SIZE;
- for (type = GUC_DEBUG_LOG_BUFFER; type < GUC_MAX_LOG_BUFFER; type++) {
+ /* For relay logging, we exclude error state capture */
+ for (type = GUC_DEBUG_LOG_BUFFER; type <= GUC_CRASH_DUMP_LOG_BUFFER; type++) {
/*
* Make a copy of the state structure, inside GuC log buffer
* (which is uncached mapped), on the stack to avoid reading
static int guc_log_relay_map(struct intel_guc_log *log)
{
- void *vaddr;
-
lockdep_assert_held(&log->relay.lock);
- if (!log->vma)
+ if (!log->vma || !log->buf_addr)
return -ENODEV;
/*
- * 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.
+ * WC vmalloc mapping of log buffer pages was done at
+ * GuC Log Init time, but lets keep a ref for book-keeping
*/
- vaddr = i915_gem_object_pin_map_unlocked(log->vma->obj, I915_MAP_WC);
- if (IS_ERR(vaddr))
- return PTR_ERR(vaddr);
-
- log->relay.buf_addr = vaddr;
+ i915_gem_object_get(log->vma->obj);
+ log->relay.buf_in_use = true;
return 0;
}
{
lockdep_assert_held(&log->relay.lock);
- i915_gem_object_unpin_map(log->vma->obj);
- log->relay.buf_addr = NULL;
+ i915_gem_object_put(log->vma->obj);
+ log->relay.buf_in_use = false;
}
void intel_guc_log_init_early(struct intel_guc_log *log)
{
struct intel_guc *guc = log_to_guc(log);
struct i915_vma *vma;
+ void *vaddr;
u32 guc_log_size;
int ret;
/*
* GuC Log buffer Layout
+ * (this ordering must follow "enum guc_log_buffer_type" definition)
*
* +===============================+ 00B
- * | Crash dump state header |
- * +-------------------------------+ 32B
* | Debug state header |
+ * +-------------------------------+ 32B
+ * | Crash dump state header |
* +-------------------------------+ 64B
* | Capture state header |
* +-------------------------------+ 96B
* | |
* +===============================+ PAGE_SIZE (4KB)
- * | Crash Dump logs |
- * +===============================+ + CRASH_SIZE
* | Debug logs |
* +===============================+ + DEBUG_SIZE
+ * | Crash Dump logs |
+ * +===============================+ + CRASH_SIZE
* | Capture logs |
* +===============================+ + CAPTURE_SIZE
*/
}
log->vma = vma;
+ /*
+ * Create a WC (Uncached for read) vmalloc mapping up front immediate access to
+ * data from memory during critical events such as error capture
+ */
+ vaddr = i915_gem_object_pin_map_unlocked(log->vma->obj, I915_MAP_WC);
+ if (IS_ERR(vaddr)) {
+ ret = PTR_ERR(vaddr);
+ i915_vma_unpin_and_release(&log->vma, 0);
+ goto err;
+ }
+ log->buf_addr = vaddr;
log->level = __get_default_log_level(log);
DRM_DEBUG_DRIVER("guc_log_level=%d (%s, verbose:%s, verbosity:%d)\n",
return 0;
err:
- DRM_ERROR("Failed to allocate GuC log buffer. %d\n", ret);
+ DRM_ERROR("Failed to allocate or map GuC log buffer. %d\n", ret);
return ret;
}
void intel_guc_log_destroy(struct intel_guc_log *log)
{
- i915_vma_unpin_and_release(&log->vma, 0);
+ log->buf_addr = NULL;
+ i915_vma_unpin_and_release(&log->vma, I915_VMA_RELEASE_MAP);
}
int intel_guc_log_set_level(struct intel_guc_log *log, u32 level)
bool intel_guc_log_relay_created(const struct intel_guc_log *log)
{
- return log->relay.buf_addr;
+ return log->buf_addr;
}
int intel_guc_log_relay_open(struct intel_guc_log *log)