diff options
Diffstat (limited to 'drivers/misc/ocxl/sysfs.c')
| -rw-r--r-- | drivers/misc/ocxl/sysfs.c | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/drivers/misc/ocxl/sysfs.c b/drivers/misc/ocxl/sysfs.c index 58f1ba264206..25c78df8055d 100644 --- a/drivers/misc/ocxl/sysfs.c +++ b/drivers/misc/ocxl/sysfs.c @@ -51,11 +51,46 @@ static ssize_t contexts_show(struct device *device, afu->pasid_count, afu->pasid_max); } +static ssize_t reload_on_reset_show(struct device *device, + struct device_attribute *attr, + char *buf) +{ + struct ocxl_afu *afu = to_afu(device); + struct ocxl_fn *fn = afu->fn; + struct pci_dev *pci_dev = to_pci_dev(fn->dev.parent); + int val; + + if (ocxl_config_get_reset_reload(pci_dev, &val)) + return scnprintf(buf, PAGE_SIZE, "unavailable\n"); + + return scnprintf(buf, PAGE_SIZE, "%d\n", val); +} + +static ssize_t reload_on_reset_store(struct device *device, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct ocxl_afu *afu = to_afu(device); + struct ocxl_fn *fn = afu->fn; + struct pci_dev *pci_dev = to_pci_dev(fn->dev.parent); + int rc, val; + + rc = kstrtoint(buf, 0, &val); + if (rc || (val != 0 && val != 1)) + return -EINVAL; + + if (ocxl_config_set_reset_reload(pci_dev, val)) + return -ENODEV; + + return count; +} + static struct device_attribute afu_attrs[] = { __ATTR_RO(global_mmio_size), __ATTR_RO(pp_mmio_size), __ATTR_RO(afu_version), __ATTR_RO(contexts), + __ATTR_RW(reload_on_reset), }; static ssize_t global_mmio_read(struct file *filp, struct kobject *kobj, |