diff options
author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /drivers/zorro/proc.c |
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'drivers/zorro/proc.c')
-rw-r--r-- | drivers/zorro/proc.c | 139 |
1 files changed, 139 insertions, 0 deletions
diff --git a/drivers/zorro/proc.c b/drivers/zorro/proc.c new file mode 100644 index 00000000000..1a409c2c320 --- /dev/null +++ b/drivers/zorro/proc.c @@ -0,0 +1,139 @@ +/* + * $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 <mj@atrey.karlin.mff.cuni.cz> + */ + +#include <linux/types.h> +#include <linux/zorro.h> +#include <linux/proc_fs.h> +#include <linux/init.h> +#include <linux/smp_lock.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 = -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 *buf, size_t nbytes, loff_t *ppos) +{ + struct inode *ino = file->f_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 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, zorro_resource_start(z), + 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("zorro", proc_bus); + 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); |