ASR_BASE
Change-Id: Icf3719cc0afe3eeb3edc7fa80a2eb5199ca9dda1
diff --git a/marvell/linux/drivers/pnp/isapnp/proc.c b/marvell/linux/drivers/pnp/isapnp/proc.c
new file mode 100644
index 0000000..3682097
--- /dev/null
+++ b/marvell/linux/drivers/pnp/isapnp/proc.c
@@ -0,0 +1,88 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * ISA Plug & Play support
+ * Copyright (c) by Jaroslav Kysela <perex@perex.cz>
+ */
+
+#include <linux/module.h>
+#include <linux/isapnp.h>
+#include <linux/proc_fs.h>
+#include <linux/init.h>
+#include <linux/uaccess.h>
+
+extern struct pnp_protocol isapnp_protocol;
+
+static struct proc_dir_entry *isapnp_proc_bus_dir = NULL;
+
+static loff_t isapnp_proc_bus_lseek(struct file *file, loff_t off, int whence)
+{
+ return fixed_size_llseek(file, off, whence, 256);
+}
+
+static ssize_t isapnp_proc_bus_read(struct file *file, char __user * buf,
+ size_t nbytes, loff_t * ppos)
+{
+ struct pnp_dev *dev = PDE_DATA(file_inode(file));
+ int pos = *ppos;
+ int cnt, size = 256;
+
+ if (pos >= size)
+ return 0;
+ if (nbytes >= size)
+ nbytes = size;
+ if (pos + nbytes > size)
+ nbytes = size - pos;
+ cnt = nbytes;
+
+ if (!access_ok(buf, cnt))
+ return -EINVAL;
+
+ isapnp_cfg_begin(dev->card->number, dev->number);
+ for (; pos < 256 && cnt > 0; pos++, buf++, cnt--) {
+ unsigned char val;
+ val = isapnp_read_byte(pos);
+ __put_user(val, buf);
+ }
+ isapnp_cfg_end();
+
+ *ppos = pos;
+ return nbytes;
+}
+
+static const struct file_operations isapnp_proc_bus_file_operations = {
+ .owner = THIS_MODULE,
+ .llseek = isapnp_proc_bus_lseek,
+ .read = isapnp_proc_bus_read,
+};
+
+static int isapnp_proc_attach_device(struct pnp_dev *dev)
+{
+ struct pnp_card *bus = dev->card;
+ struct proc_dir_entry *de, *e;
+ char name[16];
+
+ if (!(de = bus->procdir)) {
+ sprintf(name, "%02x", bus->number);
+ de = bus->procdir = proc_mkdir(name, isapnp_proc_bus_dir);
+ if (!de)
+ return -ENOMEM;
+ }
+ sprintf(name, "%02x", dev->number);
+ e = dev->procent = proc_create_data(name, S_IFREG | S_IRUGO, de,
+ &isapnp_proc_bus_file_operations, dev);
+ if (!e)
+ return -ENOMEM;
+ proc_set_size(e, 256);
+ return 0;
+}
+
+int __init isapnp_proc_init(void)
+{
+ struct pnp_dev *dev;
+
+ isapnp_proc_bus_dir = proc_mkdir("bus/isapnp", NULL);
+ protocol_for_each_dev(&isapnp_protocol, dev) {
+ isapnp_proc_attach_device(dev);
+ }
+ return 0;
+}