diff options
Diffstat (limited to 'drivers/misc/habanalabs/common/debugfs.c')
| -rw-r--r-- | drivers/misc/habanalabs/common/debugfs.c | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/drivers/misc/habanalabs/common/debugfs.c b/drivers/misc/habanalabs/common/debugfs.c index a9c4f2d4139d..c6744bfc6da4 100644 --- a/drivers/misc/habanalabs/common/debugfs.c +++ b/drivers/misc/habanalabs/common/debugfs.c @@ -538,6 +538,39 @@ static int engines_show(struct seq_file *s, void *data) return 0; } +static ssize_t hl_memory_scrub(struct file *f, const char __user *buf, + size_t count, loff_t *ppos) +{ + struct hl_dbg_device_entry *entry = file_inode(f)->i_private; + struct hl_device *hdev = entry->hdev; + u64 val = entry->memory_scrub_val; + int rc; + + if (!hl_device_operational(hdev, NULL)) { + dev_warn_ratelimited(hdev->dev, "Can't scrub memory, device is not operational\n"); + return -EIO; + } + + mutex_lock(&hdev->fpriv_list_lock); + if (hdev->is_compute_ctx_active) { + mutex_unlock(&hdev->fpriv_list_lock); + dev_err(hdev->dev, "can't scrub dram, context exist\n"); + return -EBUSY; + } + hdev->is_in_dram_scrub = true; + mutex_unlock(&hdev->fpriv_list_lock); + + rc = hdev->asic_funcs->scrub_device_dram(hdev, val); + + mutex_lock(&hdev->fpriv_list_lock); + hdev->is_in_dram_scrub = false; + mutex_unlock(&hdev->fpriv_list_lock); + + if (rc) + return rc; + return count; +} + static bool hl_is_device_va(struct hl_device *hdev, u64 addr) { struct asic_fixed_properties *prop = &hdev->asic_prop; @@ -1316,6 +1349,11 @@ static ssize_t hl_timeout_locked_write(struct file *f, const char __user *buf, return count; } +static const struct file_operations hl_mem_scrub_fops = { + .owner = THIS_MODULE, + .write = hl_memory_scrub, +}; + static const struct file_operations hl_data32b_fops = { .owner = THIS_MODULE, .read = hl_data_read32, @@ -1475,6 +1513,17 @@ void hl_debugfs_add_device(struct hl_device *hdev) dev_entry->root = debugfs_create_dir(dev_name(hdev->dev), hl_debug_root); + debugfs_create_x64("memory_scrub_val", + 0644, + dev_entry->root, + &dev_entry->memory_scrub_val); + + debugfs_create_file("memory_scrub", + 0200, + dev_entry->root, + dev_entry, + &hl_mem_scrub_fops); + debugfs_create_x64("addr", 0644, dev_entry->root, |