From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sat, 16 Apr 2005 15:20:36 -0700 Subject: Linux-2.6.12-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! --- drivers/parport/procfs.c | 533 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 533 insertions(+) create mode 100644 drivers/parport/procfs.c (limited to 'drivers/parport/procfs.c') diff --git a/drivers/parport/procfs.c b/drivers/parport/procfs.c new file mode 100644 index 000000000000..cbe17184b9c7 --- /dev/null +++ b/drivers/parport/procfs.c @@ -0,0 +1,533 @@ +/* Sysctl interface for parport devices. + * + * Authors: David Campbell + * Tim Waugh + * Philip Blundell + * Andrea Arcangeli + * Riccardo Facchetti + * + * based on work by Grant Guenther + * and Philip Blundell + * + * Cleaned up include files - Russell King + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include + +#if defined(CONFIG_SYSCTL) && defined(CONFIG_PROC_FS) + +#define PARPORT_MIN_TIMESLICE_VALUE 1ul +#define PARPORT_MAX_TIMESLICE_VALUE ((unsigned long) HZ) +#define PARPORT_MIN_SPINTIME_VALUE 1 +#define PARPORT_MAX_SPINTIME_VALUE 1000 + +static int do_active_device(ctl_table *table, int write, struct file *filp, + void __user *result, size_t *lenp, loff_t *ppos) +{ + struct parport *port = (struct parport *)table->extra1; + char buffer[256]; + struct pardevice *dev; + int len = 0; + + if (write) /* can't happen anyway */ + return -EACCES; + + if (*ppos) { + *lenp = 0; + return 0; + } + + for (dev = port->devices; dev ; dev = dev->next) { + if(dev == port->cad) { + len += sprintf(buffer, "%s\n", dev->name); + } + } + + if(!len) { + len += sprintf(buffer, "%s\n", "none"); + } + + if (len > *lenp) + len = *lenp; + else + *lenp = len; + + *ppos += len; + + return copy_to_user(result, buffer, len) ? -EFAULT : 0; +} + +#ifdef CONFIG_PARPORT_1284 +static int do_autoprobe(ctl_table *table, int write, struct file *filp, + void __user *result, size_t *lenp, loff_t *ppos) +{ + struct parport_device_info *info = table->extra2; + const char *str; + char buffer[256]; + int len = 0; + + if (write) /* permissions stop this */ + return -EACCES; + + if (*ppos) { + *lenp = 0; + return 0; + } + + if ((str = info->class_name) != NULL) + len += sprintf (buffer + len, "CLASS:%s;\n", str); + + if ((str = info->model) != NULL) + len += sprintf (buffer + len, "MODEL:%s;\n", str); + + if ((str = info->mfr) != NULL) + len += sprintf (buffer + len, "MANUFACTURER:%s;\n", str); + + if ((str = info->description) != NULL) + len += sprintf (buffer + len, "DESCRIPTION:%s;\n", str); + + if ((str = info->cmdset) != NULL) + len += sprintf (buffer + len, "COMMAND SET:%s;\n", str); + + if (len > *lenp) + len = *lenp; + else + *lenp = len; + + *ppos += len; + + return copy_to_user (result, buffer, len) ? -EFAULT : 0; +} +#endif /* IEEE1284.3 support. */ + +static int do_hardware_base_addr (ctl_table *table, int write, + struct file *filp, void __user *result, + size_t *lenp, loff_t *ppos) +{ + struct parport *port = (struct parport *)table->extra1; + char buffer[20]; + int len = 0; + + if (*ppos) { + *lenp = 0; + return 0; + } + + if (write) /* permissions prevent this anyway */ + return -EACCES; + + len += sprintf (buffer, "%lu\t%lu\n", port->base, port->base_hi); + + if (len > *lenp) + len = *lenp; + else + *lenp = len; + + *ppos += len; + + return copy_to_user(result, buffer, len) ? -EFAULT : 0; +} + +static int do_hardware_irq (ctl_table *table, int write, + struct file *filp, void __user *result, + size_t *lenp, loff_t *ppos) +{ + struct parport *port = (struct parport *)table->extra1; + char buffer[20]; + int len = 0; + + if (*ppos) { + *lenp = 0; + return 0; + } + + if (write) /* permissions prevent this anyway */ + return -EACCES; + + len += sprintf (buffer, "%d\n", port->irq); + + if (len > *lenp) + len = *lenp; + else + *lenp = len; + + *ppos += len; + + return copy_to_user(result, buffer, len) ? -EFAULT : 0; +} + +static int do_hardware_dma (ctl_table *table, int write, + struct file *filp, void __user *result, + size_t *lenp, loff_t *ppos) +{ + struct parport *port = (struct parport *)table->extra1; + char buffer[20]; + int len = 0; + + if (*ppos) { + *lenp = 0; + return 0; + } + + if (write) /* permissions prevent this anyway */ + return -EACCES; + + len += sprintf (buffer, "%d\n", port->dma); + + if (len > *lenp) + len = *lenp; + else + *lenp = len; + + *ppos += len; + + return copy_to_user(result, buffer, len) ? -EFAULT : 0; +} + +static int do_hardware_modes (ctl_table *table, int write, + struct file *filp, void __user *result, + size_t *lenp, loff_t *ppos) +{ + struct parport *port = (struct parport *)table->extra1; + char buffer[40]; + int len = 0; + + if (*ppos) { + *lenp = 0; + return 0; + } + + if (write) /* permissions prevent this anyway */ + return -EACCES; + + { +#define printmode(x) {if(port->modes&PARPORT_MODE_##x){len+=sprintf(buffer+len,"%s%s",f?",":"",#x);f++;}} + int f = 0; + printmode(PCSPP); + printmode(TRISTATE); + printmode(COMPAT); + printmode(EPP); + printmode(ECP); + printmode(DMA); +#undef printmode + } + buffer[len++] = '\n'; + + if (len > *lenp) + len = *lenp; + else + *lenp = len; + + *ppos += len; + + return copy_to_user(result, buffer, len) ? -EFAULT : 0; +} + +#define PARPORT_PORT_DIR(child) { 0, NULL, NULL, 0, 0555, child } +#define PARPORT_PARPORT_DIR(child) { DEV_PARPORT, "parport", \ + NULL, 0, 0555, child } +#define PARPORT_DEV_DIR(child) { CTL_DEV, "dev", NULL, 0, 0555, child } +#define PARPORT_DEVICES_ROOT_DIR { DEV_PARPORT_DEVICES, "devices", \ + NULL, 0, 0555, NULL } + +static const unsigned long parport_min_timeslice_value = +PARPORT_MIN_TIMESLICE_VALUE; + +static const unsigned long parport_max_timeslice_value = +PARPORT_MAX_TIMESLICE_VALUE; + +static const int parport_min_spintime_value = +PARPORT_MIN_SPINTIME_VALUE; + +static const int parport_max_spintime_value = +PARPORT_MAX_SPINTIME_VALUE; + + +struct parport_sysctl_table { + struct ctl_table_header *sysctl_header; + ctl_table vars[12]; + ctl_table device_dir[2]; + ctl_table port_dir[2]; + ctl_table parport_dir[2]; + ctl_table dev_dir[2]; +}; + +static const struct parport_sysctl_table parport_sysctl_template = { + NULL, + { + { DEV_PARPORT_SPINTIME, "spintime", + NULL, sizeof(int), 0644, NULL, + &proc_dointvec_minmax, NULL, NULL, + (void*) &parport_min_spintime_value, + (void*) &parport_max_spintime_value }, + { DEV_PARPORT_BASE_ADDR, "base-addr", + NULL, 0, 0444, NULL, + &do_hardware_base_addr }, + { DEV_PARPORT_IRQ, "irq", + NULL, 0, 0444, NULL, + &do_hardware_irq }, + { DEV_PARPORT_DMA, "dma", + NULL, 0, 0444, NULL, + &do_hardware_dma }, + { DEV_PARPORT_MODES, "modes", + NULL, 0, 0444, NULL, + &do_hardware_modes }, + PARPORT_DEVICES_ROOT_DIR, +#ifdef CONFIG_PARPORT_1284 + { DEV_PARPORT_AUTOPROBE, "autoprobe", + NULL, 0, 0444, NULL, + &do_autoprobe }, + { DEV_PARPORT_AUTOPROBE + 1, "autoprobe0", + NULL, 0, 0444, NULL, + &do_autoprobe }, + { DEV_PARPORT_AUTOPROBE + 2, "autoprobe1", + NULL, 0, 0444, NULL, + &do_autoprobe }, + { DEV_PARPORT_AUTOPROBE + 3, "autoprobe2", + NULL, 0, 0444, NULL, + &do_autoprobe }, + { DEV_PARPORT_AUTOPROBE + 4, "autoprobe3", + NULL, 0, 0444, NULL, + &do_autoprobe }, +#endif /* IEEE 1284 support */ + {0} + }, + { {DEV_PARPORT_DEVICES_ACTIVE, "active", NULL, 0, 0444, NULL, + &do_active_device }, {0}}, + { PARPORT_PORT_DIR(NULL), {0}}, + { PARPORT_PARPORT_DIR(NULL), {0}}, + { PARPORT_DEV_DIR(NULL), {0}} +}; + +struct parport_device_sysctl_table +{ + struct ctl_table_header *sysctl_header; + ctl_table vars[2]; + ctl_table device_dir[2]; + ctl_table devices_root_dir[2]; + ctl_table port_dir[2]; + ctl_table parport_dir[2]; + ctl_table dev_dir[2]; +}; + +static const struct parport_device_sysctl_table +parport_device_sysctl_template = { + NULL, + { + { DEV_PARPORT_DEVICE_TIMESLICE, "timeslice", + NULL, sizeof(int), 0644, NULL, + &proc_doulongvec_ms_jiffies_minmax, NULL, NULL, + (void*) &parport_min_timeslice_value, + (void*) &parport_max_timeslice_value }, + }, + { {0, NULL, NULL, 0, 0555, NULL}, {0}}, + { PARPORT_DEVICES_ROOT_DIR, {0}}, + { PARPORT_PORT_DIR(NULL), {0}}, + { PARPORT_PARPORT_DIR(NULL), {0}}, + { PARPORT_DEV_DIR(NULL), {0}} +}; + +struct parport_default_sysctl_table +{ + struct ctl_table_header *sysctl_header; + ctl_table vars[3]; + ctl_table default_dir[2]; + ctl_table parport_dir[2]; + ctl_table dev_dir[2]; +}; + +extern unsigned long parport_default_timeslice; +extern int parport_default_spintime; + +static struct parport_default_sysctl_table +parport_default_sysctl_table = { + NULL, + { + { DEV_PARPORT_DEFAULT_TIMESLICE, "timeslice", + &parport_default_timeslice, + sizeof(parport_default_timeslice), 0644, NULL, + &proc_doulongvec_ms_jiffies_minmax, NULL, NULL, + (void*) &parport_min_timeslice_value, + (void*) &parport_max_timeslice_value }, + { DEV_PARPORT_DEFAULT_SPINTIME, "spintime", + &parport_default_spintime, + sizeof(parport_default_spintime), 0644, NULL, + &proc_dointvec_minmax, NULL, NULL, + (void*) &parport_min_spintime_value, + (void*) &parport_max_spintime_value }, + {0} + }, + { { DEV_PARPORT_DEFAULT, "default", NULL, 0, 0555, + parport_default_sysctl_table.vars },{0}}, + { + PARPORT_PARPORT_DIR(parport_default_sysctl_table.default_dir), + {0}}, + { PARPORT_DEV_DIR(parport_default_sysctl_table.parport_dir), {0}} +}; + + +int parport_proc_register(struct parport *port) +{ + struct parport_sysctl_table *t; + int i; + + t = kmalloc(sizeof(*t), GFP_KERNEL); + if (t == NULL) + return -ENOMEM; + memcpy(t, &parport_sysctl_template, sizeof(*t)); + + t->device_dir[0].extra1 = port; + + for (i = 0; i < 8; i++) + t->vars[i].extra1 = port; + + t->vars[0].data = &port->spintime; + t->vars[5].child = t->device_dir; + + for (i = 0; i < 5; i++) + t->vars[6 + i].extra2 = &port->probe_info[i]; + + t->port_dir[0].procname = port->name; + t->port_dir[0].ctl_name = port->number + 1; /* nb 0 isn't legal here */ + + t->port_dir[0].child = t->vars; + t->parport_dir[0].child = t->port_dir; + t->dev_dir[0].child = t->parport_dir; + + t->sysctl_header = register_sysctl_table(t->dev_dir, 0); + if (t->sysctl_header == NULL) { + kfree(t); + t = NULL; + } + port->sysctl_table = t; + return 0; +} + +int parport_proc_unregister(struct parport *port) +{ + if (port->sysctl_table) { + struct parport_sysctl_table *t = port->sysctl_table; + port->sysctl_table = NULL; + unregister_sysctl_table(t->sysctl_header); + kfree(t); + } + return 0; +} + +int parport_device_proc_register(struct pardevice *device) +{ + struct parport_device_sysctl_table *t; + struct parport * port = device->port; + + t = kmalloc(sizeof(*t), GFP_KERNEL); + if (t == NULL) + return -ENOMEM; + memcpy(t, &parport_device_sysctl_template, sizeof(*t)); + + t->dev_dir[0].child = t->parport_dir; + t->parport_dir[0].child = t->port_dir; + t->port_dir[0].procname = port->name; + t->port_dir[0].ctl_name = port->number + 1; /* nb 0 isn't legal here */ + t->port_dir[0].child = t->devices_root_dir; + t->devices_root_dir[0].child = t->device_dir; + +#ifdef CONFIG_PARPORT_1284 + + t->device_dir[0].ctl_name = + parport_device_num(port->number, port->muxport, + device->daisy) + + 1; /* nb 0 isn't legal here */ + +#else /* No IEEE 1284 support */ + + /* parport_device_num isn't available. */ + t->device_dir[0].ctl_name = 1; + +#endif /* IEEE 1284 support or not */ + + t->device_dir[0].procname = device->name; + t->device_dir[0].extra1 = device; + t->device_dir[0].child = t->vars; + t->vars[0].data = &device->timeslice; + + t->sysctl_header = register_sysctl_table(t->dev_dir, 0); + if (t->sysctl_header == NULL) { + kfree(t); + t = NULL; + } + device->sysctl_table = t; + return 0; +} + +int parport_device_proc_unregister(struct pardevice *device) +{ + if (device->sysctl_table) { + struct parport_device_sysctl_table *t = device->sysctl_table; + device->sysctl_table = NULL; + unregister_sysctl_table(t->sysctl_header); + kfree(t); + } + return 0; +} + +static int __init parport_default_proc_register(void) +{ + parport_default_sysctl_table.sysctl_header = + register_sysctl_table(parport_default_sysctl_table.dev_dir, 0); + return 0; +} + +static void __exit parport_default_proc_unregister(void) +{ + if (parport_default_sysctl_table.sysctl_header) { + unregister_sysctl_table(parport_default_sysctl_table. + sysctl_header); + parport_default_sysctl_table.sysctl_header = NULL; + } +} + +#else /* no sysctl or no procfs*/ + +int parport_proc_register(struct parport *pp) +{ + return 0; +} + +int parport_proc_unregister(struct parport *pp) +{ + return 0; +} + +int parport_device_proc_register(struct pardevice *device) +{ + return 0; +} + +int parport_device_proc_unregister(struct pardevice *device) +{ + return 0; +} + +static int __init parport_default_proc_register (void) +{ + return 0; +} + +static void __exit parport_default_proc_unregister (void) +{ +} +#endif + +module_init(parport_default_proc_register) +module_exit(parport_default_proc_unregister) -- cgit