/* * $Id: proc.c,v 1.1.2.1 1998/06/07 23:21:01 geert Exp $ * * Procfs interface for the Zorro bus. * * Copyright (C) 1998-2003 Geert Uytterhoeven * * Heavily based on the procfs interface for the PCI bus, which is * * Copyright (C) 1997, 1998 Martin Mares */ #include #include #include #include #include #include #include #include static loff_t proc_bus_zorro_lseek(struct file *file, loff_t off, int whence) { loff_t new = -1; lock_kernel(); switch (whence) { case 0: new = off; break; case 1: new = file->f_pos + off; break; case 2: new = sizeof(struct ConfigDev) + off; break; } if (new < 0 || new > sizeof(struct ConfigDev)) { unlock_kernel(); return -EINVAL; } unlock_kernel(); return (file->f_pos = new); } static ssize_t proc_bus_zorro_read(struct file *file, char __user *buf, size_t nbytes, loff_t *ppos) { struct inode *ino = file->f_path.dentry->d_inode; struct proc_dir_entry *dp = PDE(ino); struct zorro_dev *z = dp->data; 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 = z->slotaddr; cd.cd_SlotSize = z->slotsize; cd.cd_BoardAddr = (void *)zorro_resource_start(z); cd.cd_BoardSize = zorro_resource_len(z); if (copy_to_user(buf, &cd, nbytes)) return -EFAULT; *ppos += nbytes; return nbytes; } static const struct file_operations proc_bus_zorro_operations = { .llseek = proc_bus_zorro_lseek, .read = proc_bus_zorro_read, }; static int get_zorro_dev_info(char *buf, char **start, off_t pos, int count) { u_int slot; off_t at = 0; int len, cnt; for (slot = cnt = 0; slot < zorro_num_autocon && count > cnt; slot++) { struct zorro_dev *z = &zorro_autocon[slot]; len = sprintf(buf, "%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); 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_bus_zorro_dir; static int __init zorro_proc_attach_device(u_int slot) { struct proc_dir_entry *entry; char name[4]; sprintf(name, "%02x", slot); entry = create_proc_entry(name, 0, proc_bus_zorro_dir); if (!entry) return -ENOMEM; entry->proc_fops = &proc_bus_zorro_operations; entry->data = &zorro_autocon[slot]; entry->size = sizeof(struct zorro_dev); return 0; } static int __init zorro_proc_init(void) { u_int slot; if (MACH_IS_AMIGA && AMIGAHW_PRESENT(ZORRO)) { proc_bus_zorro_dir = proc_mkdir("bus/zorro", NULL); create_proc_info_entry("devices", 0, proc_bus_zorro_dir, get_zorro_dev_info); for (slot = 0; slot < zorro_num_autocon; slot++) zorro_proc_attach_device(slot); } return 0; } __initcall(zorro_proc_init);