1 files changed, 42 insertions, 7 deletions

diff --git a/drivers/misc/ocxl/sysfs.c b/drivers/misc/ocxl/sysfs.c
index 58f1ba264206..1b6a86f17b6c 100644
--- a/drivers/misc/ocxl/sysfs.c
+++ b/drivers/misc/ocxl/sysfs.c
@@ -16,7 +16,7 @@ static ssize_t global_mmio_size_show(struct device *device,
 {
 	struct ocxl_afu *afu = to_afu(device);
 
-	return scnprintf(buf, PAGE_SIZE, "%d\n",
+	return sysfs_emit(buf, "%d\n",
 			afu->config.global_mmio_size);
 }
 
@@ -26,7 +26,7 @@ static ssize_t pp_mmio_size_show(struct device *device,
 {
 	struct ocxl_afu *afu = to_afu(device);
 
-	return scnprintf(buf, PAGE_SIZE, "%d\n",
+	return sysfs_emit(buf, "%d\n",
 			afu->config.pp_mmio_stride);
 }
 
@@ -36,7 +36,7 @@ static ssize_t afu_version_show(struct device *device,
 {
 	struct ocxl_afu *afu = to_afu(device);
 
-	return scnprintf(buf, PAGE_SIZE, "%hhu:%hhu\n",
+	return sysfs_emit(buf, "%hhu:%hhu\n",
 			afu->config.version_major,
 			afu->config.version_minor);
 }
@@ -47,19 +47,54 @@ static ssize_t contexts_show(struct device *device,
 {
 	struct ocxl_afu *afu = to_afu(device);
 
-	return scnprintf(buf, PAGE_SIZE, "%d/%d\n",
+	return sysfs_emit(buf, "%d/%d\n",
 			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 sysfs_emit(buf, "unavailable\n");
+
+	return sysfs_emit(buf, "%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,
-				struct bin_attribute *bin_attr, char *buf,
+				const struct bin_attribute *bin_attr, char *buf,
 				loff_t off, size_t count)
 {
 	struct ocxl_afu *afu = to_afu(kobj_to_dev(kobj));
@@ -90,7 +125,7 @@ static const struct vm_operations_struct global_mmio_vmops = {
 };
 
 static int global_mmio_mmap(struct file *filp, struct kobject *kobj,
-			struct bin_attribute *bin_attr,
+			const struct bin_attribute *bin_attr,
 			struct vm_area_struct *vma)
 {
 	struct ocxl_afu *afu = to_afu(kobj_to_dev(kobj));
@@ -99,7 +134,7 @@ static int global_mmio_mmap(struct file *filp, struct kobject *kobj,
 		(afu->config.global_mmio_size >> PAGE_SHIFT))
 		return -EINVAL;
 
-	vma->vm_flags |= VM_IO | VM_PFNMAP;
+	vm_flags_set(vma, VM_IO | VM_PFNMAP);
 	vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
 	vma->vm_ops = &global_mmio_vmops;
 	vma->vm_private_data = afu;