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 18 #include <asm/byteorder.h> 19 #include <linux/uaccess.h> 20 #include <asm/amigahw.h> 21 #include <asm/setup.h> 22 23 static loff_t 24 proc_bus_zorro_lseek(struct file *file, loff_t off, int whence) 25 { 26 return fixed_size_llseek(file, off, whence, sizeof(struct ConfigDev)); 27 } 28 29 static ssize_t 30 proc_bus_zorro_read(struct file *file, char __user *buf, size_t nbytes, loff_t *ppos) 31 { 32 struct zorro_dev *z = PDE_DATA(file_inode(file)); 33 struct ConfigDev cd; 34 loff_t pos = *ppos; 35 36 if (pos >= sizeof(struct ConfigDev)) 37 return 0; 38 if (nbytes >= sizeof(struct ConfigDev)) 39 nbytes = sizeof(struct ConfigDev); 40 if (pos + nbytes > sizeof(struct ConfigDev)) 41 nbytes = sizeof(struct ConfigDev) - pos; 42 43 /* Construct a ConfigDev */ 44 memset(&cd, 0, sizeof(cd)); 45 cd.cd_Rom = z->rom; 46 cd.cd_SlotAddr = cpu_to_be16(z->slotaddr); 47 cd.cd_SlotSize = cpu_to_be16(z->slotsize); 48 cd.cd_BoardAddr = cpu_to_be32(zorro_resource_start(z)); 49 cd.cd_BoardSize = cpu_to_be32(zorro_resource_len(z)); 50 51 if (copy_to_user(buf, (void *)&cd + pos, nbytes)) 52 return -EFAULT; 53 *ppos += nbytes; 54 55 return nbytes; 56 } 57 58 static const struct file_operations proc_bus_zorro_operations = { 59 .owner = THIS_MODULE, 60 .llseek = proc_bus_zorro_lseek, 61 .read = proc_bus_zorro_read, 62 }; 63 64 static void * zorro_seq_start(struct seq_file *m, loff_t *pos) 65 { 66 return (*pos < zorro_num_autocon) ? pos : NULL; 67 } 68 69 static void * zorro_seq_next(struct seq_file *m, void *v, loff_t *pos) 70 { 71 (*pos)++; 72 return (*pos < zorro_num_autocon) ? pos : NULL; 73 } 74 75 static void zorro_seq_stop(struct seq_file *m, void *v) 76 { 77 } 78 79 static int zorro_seq_show(struct seq_file *m, void *v) 80 { 81 unsigned int slot = *(loff_t *)v; 82 struct zorro_dev *z = &zorro_autocon[slot]; 83 84 seq_printf(m, "%02x\t%08x\t%08lx\t%08lx\t%02x\n", slot, z->id, 85 (unsigned long)zorro_resource_start(z), 86 (unsigned long)zorro_resource_len(z), 87 z->rom.er_Type); 88 return 0; 89 } 90 91 static const struct seq_operations zorro_devices_seq_ops = { 92 .start = zorro_seq_start, 93 .next = zorro_seq_next, 94 .stop = zorro_seq_stop, 95 .show = zorro_seq_show, 96 }; 97 98 static int zorro_devices_proc_open(struct inode *inode, struct file *file) 99 { 100 return seq_open(file, &zorro_devices_seq_ops); 101 } 102 103 static const struct file_operations zorro_devices_proc_fops = { 104 .owner = THIS_MODULE, 105 .open = zorro_devices_proc_open, 106 .read = seq_read, 107 .llseek = seq_lseek, 108 .release = seq_release, 109 }; 110 111 static struct proc_dir_entry *proc_bus_zorro_dir; 112 113 static int __init zorro_proc_attach_device(unsigned int slot) 114 { 115 struct proc_dir_entry *entry; 116 char name[4]; 117 118 sprintf(name, "%02x", slot); 119 entry = proc_create_data(name, 0, proc_bus_zorro_dir, 120 &proc_bus_zorro_operations, 121 &zorro_autocon[slot]); 122 if (!entry) 123 return -ENOMEM; 124 proc_set_size(entry, sizeof(struct zorro_dev)); 125 return 0; 126 } 127 128 static int __init zorro_proc_init(void) 129 { 130 unsigned int slot; 131 132 if (MACH_IS_AMIGA && AMIGAHW_PRESENT(ZORRO)) { 133 proc_bus_zorro_dir = proc_mkdir("bus/zorro", NULL); 134 proc_create("devices", 0, proc_bus_zorro_dir, 135 &zorro_devices_proc_fops); 136 for (slot = 0; slot < zorro_num_autocon; slot++) 137 zorro_proc_attach_device(slot); 138 } 139 return 0; 140 } 141 142 device_initcall(zorro_proc_init); 143