diff options
Diffstat (limited to '')
| -rw-r--r-- | drivers/zorro/proc.c | 129 |
1 files changed, 129 insertions, 0 deletions
diff --git a/drivers/zorro/proc.c b/drivers/zorro/proc.c new file mode 100644 index 000000000..f916bf60b --- /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); |