From ace9429bb58fd418f0c81d4c2835699bddf6bde6 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Thu, 11 Apr 2024 10:27:49 +0200
Subject: Adding upstream version 6.6.15.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 drivers/zorro/proc.c | 129 +++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 129 insertions(+)
 create mode 100644 drivers/zorro/proc.c

(limited to 'drivers/zorro/proc.c')

diff --git a/drivers/zorro/proc.c b/drivers/zorro/proc.c
new file mode 100644
index 0000000000..f916bf60b3
--- /dev/null
+++ b/drivers/zorro/proc.c
@@ -0,0 +1,129 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ *	Procfs interface for the Zorro bus.
+ *
+ *	Copyright (C) 1998-2003 Geert Uytterhoeven
+ *
+ *	Heavily based on the procfs interface for the PCI bus, which is
+ *
+ *	Copyright (C) 1997, 1998 Martin Mares <mj@atrey.karlin.mff.cuni.cz>
+ */
+
+#include <linux/types.h>
+#include <linux/zorro.h>
+#include <linux/proc_fs.h>
+#include <linux/seq_file.h>
+#include <linux/init.h>
+#include <linux/export.h>
+
+#include <asm/byteorder.h>
+#include <linux/uaccess.h>
+#include <asm/amigahw.h>
+#include <asm/setup.h>
+
+static loff_t
+proc_bus_zorro_lseek(struct file *file, loff_t off, int whence)
+{
+	return fixed_size_llseek(file, off, whence, sizeof(struct ConfigDev));
+}
+
+static ssize_t
+proc_bus_zorro_read(struct file *file, char __user *buf, size_t nbytes, loff_t *ppos)
+{
+	struct zorro_dev *z = pde_data(file_inode(file));
+	struct ConfigDev cd;
+	loff_t pos = *ppos;
+
+	if (pos >= sizeof(struct ConfigDev))
+		return 0;
+	if (nbytes >= sizeof(struct ConfigDev))
+		nbytes = sizeof(struct ConfigDev);
+	if (pos + nbytes > sizeof(struct ConfigDev))
+		nbytes = sizeof(struct ConfigDev) - pos;
+
+	/* Construct a ConfigDev */
+	memset(&cd, 0, sizeof(cd));
+	cd.cd_Rom = z->rom;
+	cd.cd_SlotAddr = cpu_to_be16(z->slotaddr);
+	cd.cd_SlotSize = cpu_to_be16(z->slotsize);
+	cd.cd_BoardAddr = cpu_to_be32(zorro_resource_start(z));
+	cd.cd_BoardSize = cpu_to_be32(zorro_resource_len(z));
+
+	if (copy_to_user(buf, (void *)&cd + pos, nbytes))
+		return -EFAULT;
+	*ppos += nbytes;
+
+	return nbytes;
+}
+
+static const struct proc_ops bus_zorro_proc_ops = {
+	.proc_lseek	= proc_bus_zorro_lseek,
+	.proc_read	= proc_bus_zorro_read,
+};
+
+static void * zorro_seq_start(struct seq_file *m, loff_t *pos)
+{
+	return (*pos < zorro_num_autocon) ? pos : NULL;
+}
+
+static void * zorro_seq_next(struct seq_file *m, void *v, loff_t *pos)
+{
+	(*pos)++;
+	return (*pos < zorro_num_autocon) ? pos : NULL;
+}
+
+static void zorro_seq_stop(struct seq_file *m, void *v)
+{
+}
+
+static int zorro_seq_show(struct seq_file *m, void *v)
+{
+	unsigned int slot = *(loff_t *)v;
+	struct zorro_dev *z = &zorro_autocon[slot];
+
+	seq_printf(m, "%02x\t%08x\t%08lx\t%08lx\t%02x\n", slot, z->id,
+		   (unsigned long)zorro_resource_start(z),
+		   (unsigned long)zorro_resource_len(z),
+		   z->rom.er_Type);
+	return 0;
+}
+
+static const struct seq_operations zorro_devices_seq_ops = {
+	.start = zorro_seq_start,
+	.next  = zorro_seq_next,
+	.stop  = zorro_seq_stop,
+	.show  = zorro_seq_show,
+};
+
+static struct proc_dir_entry *proc_bus_zorro_dir;
+
+static int __init zorro_proc_attach_device(unsigned int slot)
+{
+	struct proc_dir_entry *entry;
+	char name[4];
+
+	sprintf(name, "%02x", slot);
+	entry = proc_create_data(name, 0, proc_bus_zorro_dir,
+				 &bus_zorro_proc_ops,
+				 &zorro_autocon[slot]);
+	if (!entry)
+		return -ENOMEM;
+	proc_set_size(entry, sizeof(struct zorro_dev));
+	return 0;
+}
+
+static int __init zorro_proc_init(void)
+{
+	unsigned int slot;
+
+	if (MACH_IS_AMIGA && AMIGAHW_PRESENT(ZORRO)) {
+		proc_bus_zorro_dir = proc_mkdir("bus/zorro", NULL);
+		proc_create_seq("devices", 0, proc_bus_zorro_dir,
+			    &zorro_devices_seq_ops);
+		for (slot = 0; slot < zorro_num_autocon; slot++)
+			zorro_proc_attach_device(slot);
+	}
+	return 0;
+}
+
+device_initcall(zorro_proc_init);
-- 
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