390 строки
9.5 KiB
C
390 строки
9.5 KiB
C
/*
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* socket_sysfs.c -- most of socket-related sysfs output
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* (C) 2003 - 2004 Dominik Brodowski
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*/
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#include <linux/module.h>
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#include <linux/moduleparam.h>
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#include <linux/init.h>
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#include <linux/kernel.h>
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#include <linux/string.h>
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#include <linux/major.h>
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#include <linux/errno.h>
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#include <linux/slab.h>
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#include <linux/mm.h>
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#include <linux/interrupt.h>
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#include <linux/timer.h>
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#include <linux/ioport.h>
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#include <linux/delay.h>
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#include <linux/pm.h>
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#include <linux/pci.h>
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#include <linux/device.h>
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#include <linux/mutex.h>
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#include <asm/system.h>
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#include <asm/irq.h>
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#define IN_CARD_SERVICES
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#include <pcmcia/cs_types.h>
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#include <pcmcia/ss.h>
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#include <pcmcia/cs.h>
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#include <pcmcia/bulkmem.h>
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#include <pcmcia/cistpl.h>
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#include <pcmcia/cisreg.h>
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#include <pcmcia/ds.h>
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#include "cs_internal.h"
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#define to_socket(_dev) container_of(_dev, struct pcmcia_socket, dev)
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static ssize_t pccard_show_type(struct class_device *dev, char *buf)
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{
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struct pcmcia_socket *s = to_socket(dev);
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if (!(s->state & SOCKET_PRESENT))
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return -ENODEV;
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if (s->state & SOCKET_CARDBUS)
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return sprintf(buf, "32-bit\n");
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return sprintf(buf, "16-bit\n");
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}
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static CLASS_DEVICE_ATTR(card_type, 0444, pccard_show_type, NULL);
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static ssize_t pccard_show_voltage(struct class_device *dev, char *buf)
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{
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struct pcmcia_socket *s = to_socket(dev);
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if (!(s->state & SOCKET_PRESENT))
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return -ENODEV;
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if (s->socket.Vcc)
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return sprintf(buf, "%d.%dV\n", s->socket.Vcc / 10,
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s->socket.Vcc % 10);
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return sprintf(buf, "X.XV\n");
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}
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static CLASS_DEVICE_ATTR(card_voltage, 0444, pccard_show_voltage, NULL);
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static ssize_t pccard_show_vpp(struct class_device *dev, char *buf)
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{
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struct pcmcia_socket *s = to_socket(dev);
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if (!(s->state & SOCKET_PRESENT))
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return -ENODEV;
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return sprintf(buf, "%d.%dV\n", s->socket.Vpp / 10, s->socket.Vpp % 10);
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}
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static CLASS_DEVICE_ATTR(card_vpp, 0444, pccard_show_vpp, NULL);
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static ssize_t pccard_show_vcc(struct class_device *dev, char *buf)
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{
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struct pcmcia_socket *s = to_socket(dev);
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if (!(s->state & SOCKET_PRESENT))
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return -ENODEV;
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return sprintf(buf, "%d.%dV\n", s->socket.Vcc / 10, s->socket.Vcc % 10);
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}
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static CLASS_DEVICE_ATTR(card_vcc, 0444, pccard_show_vcc, NULL);
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static ssize_t pccard_store_insert(struct class_device *dev, const char *buf, size_t count)
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{
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ssize_t ret;
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struct pcmcia_socket *s = to_socket(dev);
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if (!count)
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return -EINVAL;
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ret = pcmcia_insert_card(s);
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return ret ? ret : count;
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}
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static CLASS_DEVICE_ATTR(card_insert, 0200, NULL, pccard_store_insert);
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static ssize_t pccard_show_card_pm_state(struct class_device *dev, char *buf)
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{
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struct pcmcia_socket *s = to_socket(dev);
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return sprintf(buf, "%s\n", s->state & SOCKET_SUSPEND ? "off" : "on");
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}
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static ssize_t pccard_store_card_pm_state(struct class_device *dev, const char *buf, size_t count)
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{
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ssize_t ret = -EINVAL;
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struct pcmcia_socket *s = to_socket(dev);
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if (!count)
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return -EINVAL;
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if (!(s->state & SOCKET_SUSPEND) && !strncmp(buf, "off", 3))
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ret = pcmcia_suspend_card(s);
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else if ((s->state & SOCKET_SUSPEND) && !strncmp(buf, "on", 2))
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ret = pcmcia_resume_card(s);
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return ret ? -ENODEV : count;
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}
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static CLASS_DEVICE_ATTR(card_pm_state, 0644, pccard_show_card_pm_state, pccard_store_card_pm_state);
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static ssize_t pccard_store_eject(struct class_device *dev, const char *buf, size_t count)
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{
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ssize_t ret;
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struct pcmcia_socket *s = to_socket(dev);
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if (!count)
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return -EINVAL;
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ret = pcmcia_eject_card(s);
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return ret ? ret : count;
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}
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static CLASS_DEVICE_ATTR(card_eject, 0200, NULL, pccard_store_eject);
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static ssize_t pccard_show_irq_mask(struct class_device *dev, char *buf)
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{
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struct pcmcia_socket *s = to_socket(dev);
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return sprintf(buf, "0x%04x\n", s->irq_mask);
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}
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static ssize_t pccard_store_irq_mask(struct class_device *dev, const char *buf, size_t count)
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{
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ssize_t ret;
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struct pcmcia_socket *s = to_socket(dev);
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u32 mask;
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if (!count)
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return -EINVAL;
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ret = sscanf (buf, "0x%x\n", &mask);
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if (ret == 1) {
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s->irq_mask &= mask;
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ret = 0;
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}
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return ret ? ret : count;
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}
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static CLASS_DEVICE_ATTR(card_irq_mask, 0600, pccard_show_irq_mask, pccard_store_irq_mask);
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static ssize_t pccard_show_resource(struct class_device *dev, char *buf)
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{
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struct pcmcia_socket *s = to_socket(dev);
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return sprintf(buf, "%s\n", s->resource_setup_done ? "yes" : "no");
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}
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static ssize_t pccard_store_resource(struct class_device *dev, const char *buf, size_t count)
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{
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unsigned long flags;
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struct pcmcia_socket *s = to_socket(dev);
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if (!count)
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return -EINVAL;
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spin_lock_irqsave(&s->lock, flags);
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if (!s->resource_setup_done)
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s->resource_setup_done = 1;
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spin_unlock_irqrestore(&s->lock, flags);
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mutex_lock(&s->skt_mutex);
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if ((s->callback) &&
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(s->state & SOCKET_PRESENT) &&
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!(s->state & SOCKET_CARDBUS)) {
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if (try_module_get(s->callback->owner)) {
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s->callback->requery(s, 0);
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module_put(s->callback->owner);
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}
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}
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mutex_unlock(&s->skt_mutex);
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return count;
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}
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static CLASS_DEVICE_ATTR(available_resources_setup_done, 0600, pccard_show_resource, pccard_store_resource);
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static ssize_t pccard_extract_cis(struct pcmcia_socket *s, char *buf, loff_t off, size_t count)
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{
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tuple_t tuple;
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int status, i;
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loff_t pointer = 0;
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ssize_t ret = 0;
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u_char *tuplebuffer;
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u_char *tempbuffer;
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tuplebuffer = kmalloc(sizeof(u_char) * 256, GFP_KERNEL);
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if (!tuplebuffer)
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return -ENOMEM;
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tempbuffer = kmalloc(sizeof(u_char) * 258, GFP_KERNEL);
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if (!tempbuffer) {
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ret = -ENOMEM;
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goto free_tuple;
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}
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memset(&tuple, 0, sizeof(tuple_t));
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tuple.Attributes = TUPLE_RETURN_LINK | TUPLE_RETURN_COMMON;
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tuple.DesiredTuple = RETURN_FIRST_TUPLE;
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tuple.TupleOffset = 0;
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status = pccard_get_first_tuple(s, BIND_FN_ALL, &tuple);
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while (!status) {
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tuple.TupleData = tuplebuffer;
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tuple.TupleDataMax = 255;
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memset(tuplebuffer, 0, sizeof(u_char) * 255);
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status = pccard_get_tuple_data(s, &tuple);
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if (status)
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break;
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if (off < (pointer + 2 + tuple.TupleDataLen)) {
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tempbuffer[0] = tuple.TupleCode & 0xff;
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tempbuffer[1] = tuple.TupleLink & 0xff;
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for (i = 0; i < tuple.TupleDataLen; i++)
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tempbuffer[i + 2] = tuplebuffer[i] & 0xff;
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for (i = 0; i < (2 + tuple.TupleDataLen); i++) {
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if (((i + pointer) >= off) &&
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(i + pointer) < (off + count)) {
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buf[ret] = tempbuffer[i];
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ret++;
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}
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}
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}
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pointer += 2 + tuple.TupleDataLen;
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if (pointer >= (off + count))
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break;
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if (tuple.TupleCode == CISTPL_END)
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break;
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status = pccard_get_next_tuple(s, BIND_FN_ALL, &tuple);
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}
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kfree(tempbuffer);
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free_tuple:
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kfree(tuplebuffer);
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return (ret);
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}
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static ssize_t pccard_show_cis(struct kobject *kobj, char *buf, loff_t off, size_t count)
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{
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unsigned int size = 0x200;
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if (off >= size)
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count = 0;
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else {
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struct pcmcia_socket *s;
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cisinfo_t cisinfo;
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if (off + count > size)
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count = size - off;
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s = to_socket(container_of(kobj, struct class_device, kobj));
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if (!(s->state & SOCKET_PRESENT))
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return -ENODEV;
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if (pccard_validate_cis(s, BIND_FN_ALL, &cisinfo))
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return -EIO;
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if (!cisinfo.Chains)
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return -ENODATA;
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count = pccard_extract_cis(s, buf, off, count);
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}
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return (count);
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}
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static ssize_t pccard_store_cis(struct kobject *kobj, char *buf, loff_t off, size_t count)
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{
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struct pcmcia_socket *s = to_socket(container_of(kobj, struct class_device, kobj));
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cisdump_t *cis;
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int error;
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if (off)
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return -EINVAL;
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if (count >= 0x200)
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return -EINVAL;
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if (!(s->state & SOCKET_PRESENT))
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return -ENODEV;
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cis = kzalloc(sizeof(cisdump_t), GFP_KERNEL);
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if (!cis)
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return -ENOMEM;
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cis->Length = count + 1;
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memcpy(cis->Data, buf, count);
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error = pcmcia_replace_cis(s, cis);
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kfree(cis);
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if (error)
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return -EIO;
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mutex_lock(&s->skt_mutex);
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if ((s->callback) && (s->state & SOCKET_PRESENT) &&
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!(s->state & SOCKET_CARDBUS)) {
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if (try_module_get(s->callback->owner)) {
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s->callback->requery(s, 1);
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module_put(s->callback->owner);
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}
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}
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mutex_unlock(&s->skt_mutex);
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return count;
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}
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static struct class_device_attribute *pccard_socket_attributes[] = {
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&class_device_attr_card_type,
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&class_device_attr_card_voltage,
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&class_device_attr_card_vpp,
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&class_device_attr_card_vcc,
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&class_device_attr_card_insert,
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&class_device_attr_card_pm_state,
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&class_device_attr_card_eject,
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&class_device_attr_card_irq_mask,
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&class_device_attr_available_resources_setup_done,
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NULL,
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};
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static struct bin_attribute pccard_cis_attr = {
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.attr = { .name = "cis", .mode = S_IRUGO | S_IWUSR, .owner = THIS_MODULE},
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.size = 0x200,
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.read = pccard_show_cis,
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.write = pccard_store_cis,
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};
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static int __devinit pccard_sysfs_add_socket(struct class_device *class_dev,
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struct class_interface *class_intf)
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{
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struct class_device_attribute **attr;
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int ret = 0;
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for (attr = pccard_socket_attributes; *attr; attr++) {
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ret = class_device_create_file(class_dev, *attr);
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if (ret)
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break;
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}
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if (!ret)
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ret = sysfs_create_bin_file(&class_dev->kobj, &pccard_cis_attr);
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return ret;
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}
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static void __devexit pccard_sysfs_remove_socket(struct class_device *class_dev,
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struct class_interface *class_intf)
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{
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struct class_device_attribute **attr;
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sysfs_remove_bin_file(&class_dev->kobj, &pccard_cis_attr);
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for (attr = pccard_socket_attributes; *attr; attr++)
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class_device_remove_file(class_dev, *attr);
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}
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struct class_interface pccard_sysfs_interface = {
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.class = &pcmcia_socket_class,
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.add = &pccard_sysfs_add_socket,
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.remove = __devexit_p(&pccard_sysfs_remove_socket),
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};
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