1 /* 2 * Procfs interface for the Zorro bus. 3 * 4 * Copyright (C) 1998-2003 Geert Uytterhoeven 5 * 6 * Heavily based on the procfs interface for the PCI bus, which is 7 * 8 * Copyright (C) 1997, 1998 Martin Mares <mj@atrey.karlin.mff.cuni.cz> 9 */ 10 11 #include <linux/types.h> 12 #include <linux/zorro.h> 13 #include <linux/proc_fs.h> 14 #include <linux/seq_file.h> 15 #include <linux/init.h> 16 #include <linux/export.h> 17 #include <asm/uaccess.h> 18 #include <asm/amigahw.h> 19 #include <asm/setup.h> 20 21 static loff_t 22 proc_bus_zorro_lseek(struct file *file, loff_t off, int whence) 23 { 24 return fixed_size_llseek(file, off, whence, sizeof(struct ConfigDev)); 25 } 26 27 static ssize_t 28 proc_bus_zorro_read(struct file *file, char __user *buf, size_t nbytes, loff_t *ppos) 29 { 30 struct zorro_dev *z = PDE_DATA(file_inode(file)); 31 struct ConfigDev cd; 32 loff_t pos = *ppos; 33 34 if (pos >= sizeof(struct ConfigDev)) 35 return 0; 36 if (nbytes >= sizeof(struct ConfigDev)) 37 nbytes = sizeof(struct ConfigDev); 38 if (pos + nbytes > sizeof(struct ConfigDev)) 39 nbytes = sizeof(struct ConfigDev) - pos; 40 41 /* Construct a ConfigDev */ 42 memset(&cd, 0, sizeof(cd)); 43 cd.cd_Rom = z->rom; 44 cd.cd_SlotAddr = z->slotaddr; 45 cd.cd_SlotSize = z->slotsize; 46 cd.cd_BoardAddr = (void *)zorro_resource_start(z); 47 cd.cd_BoardSize = zorro_resource_len(z); 48 49 if (copy_to_user(buf, (void *)&cd + pos, nbytes)) 50 return -EFAULT; 51 *ppos += nbytes; 52 53 return nbytes; 54 } 55 56 static const struct file_operations proc_bus_zorro_operations = { 57 .owner = THIS_MODULE, 58 .llseek = proc_bus_zorro_lseek, 59 .read = proc_bus_zorro_read, 60 }; 61 62 static void * zorro_seq_start(struct seq_file *m, loff_t *pos) 63 { 64 return (*pos < zorro_num_autocon) ? pos : NULL; 65 } 66 67 static void * zorro_seq_next(struct seq_file *m, void *v, loff_t *pos) 68 { 69 (*pos)++; 70 return (*pos < zorro_num_autocon) ? pos : NULL; 71 } 72 73 static void zorro_seq_stop(struct seq_file *m, void *v) 74 { 75 } 76 77 static int zorro_seq_show(struct seq_file *m, void *v) 78 { 79 unsigned int slot = *(loff_t *)v; 80 struct zorro_dev *z = &zorro_autocon[slot]; 81 82 seq_printf(m, "%02x\t%08x\t%08lx\t%08lx\t%02x\n", slot, z->id, 83 (unsigned long)zorro_resource_start(z), 84 (unsigned long)zorro_resource_len(z), 85 z->rom.er_Type); 86 return 0; 87 } 88 89 static const struct seq_operations zorro_devices_seq_ops = { 90 .start = zorro_seq_start, 91 .next = zorro_seq_next, 92 .stop = zorro_seq_stop, 93 .show = zorro_seq_show, 94 }; 95 96 static int zorro_devices_proc_open(struct inode *inode, struct file *file) 97 { 98 return seq_open(file, &zorro_devices_seq_ops); 99 } 100 101 static const struct file_operations zorro_devices_proc_fops = { 102 .owner = THIS_MODULE, 103 .open = zorro_devices_proc_open, 104 .read = seq_read, 105 .llseek = seq_lseek, 106 .release = seq_release, 107 }; 108 109 static struct proc_dir_entry *proc_bus_zorro_dir; 110 111 static int __init zorro_proc_attach_device(unsigned int slot) 112 { 113 struct proc_dir_entry *entry; 114 char name[4]; 115 116 sprintf(name, "%02x", slot); 117 entry = proc_create_data(name, 0, proc_bus_zorro_dir, 118 &proc_bus_zorro_operations, 119 &zorro_autocon[slot]); 120 if (!entry) 121 return -ENOMEM; 122 proc_set_size(entry, sizeof(struct zorro_dev)); 123 return 0; 124 } 125 126 static int __init zorro_proc_init(void) 127 { 128 unsigned int slot; 129 130 if (MACH_IS_AMIGA && AMIGAHW_PRESENT(ZORRO)) { 131 proc_bus_zorro_dir = proc_mkdir("bus/zorro", NULL); 132 proc_create("devices", 0, proc_bus_zorro_dir, 133 &zorro_devices_proc_fops); 134 for (slot = 0; slot < zorro_num_autocon; slot++) 135 zorro_proc_attach_device(slot); 136 } 137 return 0; 138 } 139 140 device_initcall(zorro_proc_init); 141