patch-2.1.113 linux/drivers/zorro/proc.c

• Lines: 168
• Date: Thu Jul 30 11:10:22 1998
• Orig file: v2.1.112/linux/drivers/zorro/proc.c
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.1.112/linux/drivers/zorro/proc.c linux/drivers/zorro/proc.c
@@ -0,0 +1,167 @@
+/*
+ *	$Id: proc.c,v 1.1.2.1 1998/06/07 23:21:01 geert Exp $
+ *
+ *	Procfs interface for the Zorro bus.
+ *
+ *	Copyright (C) 1998 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/init.h>
+#include <asm/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)
+{
+	loff_t new;
+
+	switch (whence) {
+	case 0:
+		new = off;
+		break;
+	case 1:
+		new = file->f_pos + off;
+		break;
+	case 2:
+		new = sizeof(struct ConfigDev) + off;
+		break;
+	default:
+		return -EINVAL;
+	}
+	if (new < 0 || new > sizeof(struct ConfigDev))
+		return -EINVAL;
+	return (file->f_pos = new);
+}
+
+static ssize_t
+proc_bus_zorro_read(struct file *file, char *buf, size_t nbytes, loff_t *ppos)
+{
+	struct inode *ino = file->f_dentry->d_inode;
+	struct proc_dir_entry *dp = ino->u.generic_ip;
+	struct ConfigDev *cd = dp->data;
+	int 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;
+	if (copy_to_user(buf, cd, nbytes))
+		return -EFAULT;
+	*ppos += nbytes;
+
+	return nbytes;
+}
+
+static struct file_operations proc_bus_zorro_operations = {
+	proc_bus_zorro_lseek,
+	proc_bus_zorro_read,
+	NULL,		/* write */
+	NULL,		/* readdir */
+	NULL,		/* poll */
+	NULL,		/* ioctl */
+	NULL,		/* mmap */
+	NULL,		/* no special open code */
+	NULL,		/* no special release code */
+	NULL		/* can't fsync */
+};
+
+static struct inode_operations proc_bus_zorro_inode_operations = {
+	&proc_bus_zorro_operations, /* default base directory file-ops */
+	NULL,			/* create */
+	NULL,			/* lookup */
+	NULL,			/* link */
+	NULL,			/* unlink */
+	NULL,			/* symlink */
+	NULL,			/* mkdir */
+	NULL,			/* rmdir */
+	NULL,			/* mknod */
+	NULL,			/* rename */
+	NULL,			/* readlink */
+	NULL,			/* follow_link */
+	NULL,			/* readpage */
+	NULL,			/* writepage */
+	NULL,			/* bmap */
+	NULL,			/* truncate */
+	NULL			/* permission */
+};
+
+int
+get_zorro_dev_info(char *buf, char **start, off_t pos, int count, int wr)
+{
+	u_int slot;
+	off_t at = 0;
+	int len, cnt;
+
+	for (slot = cnt = 0; slot < zorro_num_autocon && count > cnt; slot++) {
+		struct ConfigDev *cd = &zorro_autocon[slot];
+		u16 manuf = cd->cd_Rom.er_Manufacturer;
+		u8 prod = cd->cd_Rom.er_Product;
+		u8 epc;
+		if (manuf == ZORRO_MANUF(ZORRO_PROD_GVP_EPC_BASE) &&
+		    prod == ZORRO_PROD(ZORRO_PROD_GVP_EPC_BASE)) {
+		    /* GVP quirk */
+		    u32 addr = (u32)cd->cd_BoardAddr;
+		    epc = (*(u16 *)ZTWO_VADDR(addr+0x8000)) & GVP_PRODMASK;
+		} else
+		    epc = 0;
+		len = sprintf(buf, "%02x\t%04x%02x%02x\t%08x\t%08x\t%02x\n",
+			      slot, manuf, prod, epc, (u32)cd->cd_BoardAddr,
+			      cd->cd_BoardSize, cd->cd_Rom.er_Type);
+		at += len;
+		if (at >= pos) {
+			if (!*start) {
+				*start = buf + (pos - (at - len));
+				cnt = at - pos;
+			} else
+				cnt += len;
+			buf += len;
+		}
+	}
+	return (count > cnt) ? cnt : count;
+}
+
+static struct proc_dir_entry proc_zorro_devices = {
+	PROC_BUS_ZORRO_DEVICES, 7, "devices",
+	S_IFREG | S_IRUGO, 1, 0, 0,
+	0, &proc_array_inode_operations,
+	get_zorro_dev_info
+};
+
+static struct proc_dir_entry *proc_bus_zorro_dir;
+
+__initfunc(static int zorro_proc_attach_device(u_int slot))
+{
+	struct proc_dir_entry *entry;
+	char name[4];
+
+	sprintf(name, "%02x", slot);
+	entry = create_proc_entry(name, S_IFREG | S_IRUGO, proc_bus_zorro_dir);
+	if (!entry)
+		return -ENOMEM;
+	entry->ops = &proc_bus_zorro_inode_operations;
+	entry->data = &zorro_autocon[slot];
+	entry->size = sizeof(struct ConfigDev);
+	return 0;
+}
+
+__initfunc(void zorro_proc_init(void))
+{
+	u_int slot;
+
+	if (!MACH_IS_AMIGA || !AMIGAHW_PRESENT(ZORRO))
+		return;
+	proc_bus_zorro_dir = create_proc_entry("zorro", S_IFDIR, proc_bus);
+	proc_register(proc_bus_zorro_dir, &proc_zorro_devices);
+	for (slot = 0; slot < zorro_num_autocon; slot++)
+	    zorro_proc_attach_device(slot);
+}