* card.c - contains functions for managing groups of PnP devices
*
* Copyright 2002 Adam Belay <ambx1@neo.rr.com>
- *
*/
-#include <linux/config.h>
#include <linux/module.h>
+#include <linux/ctype.h>
#include <linux/slab.h>
#include <linux/pnp.h>
+#include <linux/dma-mapping.h>
#include "base.h"
LIST_HEAD(pnp_cards);
-LIST_HEAD(pnp_card_drivers);
-
+static LIST_HEAD(pnp_card_drivers);
-static const struct pnp_card_device_id * match_card(struct pnp_card_driver * drv, struct pnp_card * card)
+static const struct pnp_card_device_id *match_card(struct pnp_card_driver *drv,
+ struct pnp_card *card)
{
- const struct pnp_card_device_id * drv_id = drv->id_table;
- while (*drv_id->id){
- if (compare_pnp_id(card->id,drv_id->id)) {
+ const struct pnp_card_device_id *drv_id = drv->id_table;
+
+ while (*drv_id->id) {
+ if (compare_pnp_id(card->id, drv_id->id)) {
int i = 0;
+
for (;;) {
int found;
struct pnp_dev *dev;
- if (i == PNP_MAX_DEVICES || ! *drv_id->devs[i].id)
+
+ if (i == PNP_MAX_DEVICES ||
+ !*drv_id->devs[i].id)
return drv_id;
found = 0;
card_for_each_dev(card, dev) {
- if (compare_pnp_id(dev->id, drv_id->devs[i].id)) {
+ if (compare_pnp_id(dev->id,
+ drv_id->devs[i].id)) {
found = 1;
break;
}
}
- if (! found)
+ if (!found)
break;
i++;
}
return NULL;
}
-static void card_remove(struct pnp_dev * dev)
+static void card_remove(struct pnp_dev *dev)
{
dev->card_link = NULL;
}
-
-static void card_remove_first(struct pnp_dev * dev)
+
+static void card_remove_first(struct pnp_dev *dev)
{
- struct pnp_card_driver * drv = to_pnp_card_driver(dev->driver);
+ struct pnp_card_driver *drv = to_pnp_card_driver(dev->driver);
+
if (!dev->card || !drv)
return;
if (drv->remove)
card_remove(dev);
}
-static int card_probe(struct pnp_card * card, struct pnp_card_driver * drv)
+static int card_probe(struct pnp_card *card, struct pnp_card_driver *drv)
{
- const struct pnp_card_device_id *id = match_card(drv,card);
- if (id) {
- struct pnp_card_link * clink = pnp_alloc(sizeof(struct pnp_card_link));
- if (!clink)
- return 0;
- clink->card = card;
- clink->driver = drv;
- if (drv->probe) {
- if (drv->probe(clink, id)>=0)
- return 1;
- else {
- struct pnp_dev * dev;
- card_for_each_dev(card, dev) {
- if (dev->card_link == clink)
- pnp_release_card_device(dev);
- }
- kfree(clink);
- }
- } else
- return 1;
+ const struct pnp_card_device_id *id;
+ struct pnp_card_link *clink;
+ struct pnp_dev *dev;
+
+ if (!drv->probe)
+ return 0;
+ id = match_card(drv, card);
+ if (!id)
+ return 0;
+
+ clink = pnp_alloc(sizeof(*clink));
+ if (!clink)
+ return 0;
+ clink->card = card;
+ clink->driver = drv;
+ clink->pm_state = PMSG_ON;
+
+ if (drv->probe(clink, id) >= 0)
+ return 1;
+
+ /* Recovery */
+ card_for_each_dev(card, dev) {
+ if (dev->card_link == clink)
+ pnp_release_card_device(dev);
}
+ kfree(clink);
return 0;
}
* pnp_add_card_id - adds an EISA id to the specified card
* @id: pointer to a pnp_id structure
* @card: pointer to the desired card
- *
*/
-
-int pnp_add_card_id(struct pnp_id *id, struct pnp_card * card)
+static struct pnp_id *pnp_add_card_id(struct pnp_card *card, char *id)
{
- struct pnp_id * ptr;
- if (!id)
- return -EINVAL;
- if (!card)
- return -EINVAL;
- id->next = NULL;
+ struct pnp_id *dev_id, *ptr;
+
+ dev_id = kzalloc(sizeof(struct pnp_id), GFP_KERNEL);
+ if (!dev_id)
+ return NULL;
+
+ dev_id->id[0] = id[0];
+ dev_id->id[1] = id[1];
+ dev_id->id[2] = id[2];
+ dev_id->id[3] = tolower(id[3]);
+ dev_id->id[4] = tolower(id[4]);
+ dev_id->id[5] = tolower(id[5]);
+ dev_id->id[6] = tolower(id[6]);
+ dev_id->id[7] = '\0';
+
+ dev_id->next = NULL;
ptr = card->id;
while (ptr && ptr->next)
ptr = ptr->next;
if (ptr)
- ptr->next = id;
+ ptr->next = dev_id;
else
- card->id = id;
- return 0;
+ card->id = dev_id;
+
+ return dev_id;
}
-static void pnp_free_card_ids(struct pnp_card * card)
+static void pnp_free_card_ids(struct pnp_card *card)
{
- struct pnp_id * id;
+ struct pnp_id *id;
struct pnp_id *next;
- if (!card)
- return;
+
id = card->id;
while (id) {
next = id->next;
static void pnp_release_card(struct device *dmdev)
{
- struct pnp_card * card = to_pnp_card(dmdev);
+ struct pnp_card *card = to_pnp_card(dmdev);
+
pnp_free_card_ids(card);
kfree(card);
}
+struct pnp_card *pnp_alloc_card(struct pnp_protocol *protocol, int id, char *pnpid)
+{
+ struct pnp_card *card;
+ struct pnp_id *dev_id;
+
+ card = kzalloc(sizeof(struct pnp_card), GFP_KERNEL);
+ if (!card)
+ return NULL;
+
+ card->protocol = protocol;
+ card->number = id;
+
+ card->dev.parent = &card->protocol->dev;
+ dev_set_name(&card->dev, "%02x:%02x", card->protocol->number, card->number);
+
+ card->dev.coherent_dma_mask = DMA_BIT_MASK(24);
+ card->dev.dma_mask = &card->dev.coherent_dma_mask;
+
+ dev_id = pnp_add_card_id(card, pnpid);
+ if (!dev_id) {
+ kfree(card);
+ return NULL;
+ }
+
+ return card;
+}
-static ssize_t pnp_show_card_name(struct device *dmdev, struct device_attribute *attr, char *buf)
+static ssize_t pnp_show_card_name(struct device *dmdev,
+ struct device_attribute *attr, char *buf)
{
char *str = buf;
struct pnp_card *card = to_pnp_card(dmdev);
- str += sprintf(str,"%s\n", card->name);
+
+ str += sprintf(str, "%s\n", card->name);
return (str - buf);
}
-static DEVICE_ATTR(name,S_IRUGO,pnp_show_card_name,NULL);
+static DEVICE_ATTR(name, S_IRUGO, pnp_show_card_name, NULL);
-static ssize_t pnp_show_card_ids(struct device *dmdev, struct device_attribute *attr, char *buf)
+static ssize_t pnp_show_card_ids(struct device *dmdev,
+ struct device_attribute *attr, char *buf)
{
char *str = buf;
struct pnp_card *card = to_pnp_card(dmdev);
- struct pnp_id * pos = card->id;
+ struct pnp_id *pos = card->id;
while (pos) {
- str += sprintf(str,"%s\n", pos->id);
+ str += sprintf(str, "%s\n", pos->id);
pos = pos->next;
}
return (str - buf);
}
-static DEVICE_ATTR(card_id,S_IRUGO,pnp_show_card_ids,NULL);
+static DEVICE_ATTR(card_id, S_IRUGO, pnp_show_card_ids, NULL);
static int pnp_interface_attach_card(struct pnp_card *card)
{
- device_create_file(&card->dev,&dev_attr_name);
- device_create_file(&card->dev,&dev_attr_card_id);
+ int rc = device_create_file(&card->dev, &dev_attr_name);
+
+ if (rc)
+ return rc;
+
+ rc = device_create_file(&card->dev, &dev_attr_card_id);
+ if (rc)
+ goto err_name;
+
return 0;
+
+err_name:
+ device_remove_file(&card->dev, &dev_attr_name);
+ return rc;
}
/**
* pnp_add_card - adds a PnP card to the PnP Layer
* @card: pointer to the card to add
*/
-
-int pnp_add_card(struct pnp_card * card)
+int pnp_add_card(struct pnp_card *card)
{
int error;
- struct list_head * pos, * temp;
- if (!card || !card->protocol)
- return -EINVAL;
+ struct list_head *pos, *temp;
- sprintf(card->dev.bus_id, "%02x:%02x", card->protocol->number, card->number);
- card->dev.parent = &card->protocol->dev;
card->dev.bus = NULL;
card->dev.release = &pnp_release_card;
error = device_register(&card->dev);
+ if (error) {
+ dev_err(&card->dev, "could not register (err=%d)\n", error);
+ return error;
+ }
- if (error == 0) {
- pnp_interface_attach_card(card);
- spin_lock(&pnp_lock);
- list_add_tail(&card->global_list, &pnp_cards);
- list_add_tail(&card->protocol_list, &card->protocol->cards);
- spin_unlock(&pnp_lock);
-
- /* we wait until now to add devices in order to ensure the drivers
- * will be able to use all of the related devices on the card
- * without waiting any unresonable length of time */
- list_for_each(pos,&card->devices){
- struct pnp_dev *dev = card_to_pnp_dev(pos);
- __pnp_add_device(dev);
- }
+ pnp_interface_attach_card(card);
+ spin_lock(&pnp_lock);
+ list_add_tail(&card->global_list, &pnp_cards);
+ list_add_tail(&card->protocol_list, &card->protocol->cards);
+ spin_unlock(&pnp_lock);
- /* match with card drivers */
- list_for_each_safe(pos,temp,&pnp_card_drivers){
- struct pnp_card_driver * drv = list_entry(pos, struct pnp_card_driver, global_list);
- card_probe(card,drv);
- }
- } else
- pnp_err("sysfs failure, card '%s' will be unavailable", card->dev.bus_id);
- return error;
+ /* we wait until now to add devices in order to ensure the drivers
+ * will be able to use all of the related devices on the card
+ * without waiting an unreasonable length of time */
+ list_for_each(pos, &card->devices) {
+ struct pnp_dev *dev = card_to_pnp_dev(pos);
+ __pnp_add_device(dev);
+ }
+
+ /* match with card drivers */
+ list_for_each_safe(pos, temp, &pnp_card_drivers) {
+ struct pnp_card_driver *drv =
+ list_entry(pos, struct pnp_card_driver,
+ global_list);
+ card_probe(card, drv);
+ }
+ return 0;
}
/**
* pnp_remove_card - removes a PnP card from the PnP Layer
* @card: pointer to the card to remove
*/
-
-void pnp_remove_card(struct pnp_card * card)
+void pnp_remove_card(struct pnp_card *card)
{
struct list_head *pos, *temp;
- if (!card)
- return;
+
device_unregister(&card->dev);
spin_lock(&pnp_lock);
list_del(&card->global_list);
list_del(&card->protocol_list);
spin_unlock(&pnp_lock);
- list_for_each_safe(pos,temp,&card->devices){
+ list_for_each_safe(pos, temp, &card->devices) {
struct pnp_dev *dev = card_to_pnp_dev(pos);
pnp_remove_card_device(dev);
}
* @card: pointer to the card to add to
* @dev: pointer to the device to add
*/
-
-int pnp_add_card_device(struct pnp_card * card, struct pnp_dev * dev)
+int pnp_add_card_device(struct pnp_card *card, struct pnp_dev *dev)
{
- if (!card || !dev || !dev->protocol)
- return -EINVAL;
dev->dev.parent = &card->dev;
dev->card_link = NULL;
- snprintf(dev->dev.bus_id, BUS_ID_SIZE, "%02x:%02x.%02x", dev->protocol->number,
- card->number,dev->number);
+ dev_set_name(&dev->dev, "%02x:%02x.%02x",
+ dev->protocol->number, card->number, dev->number);
spin_lock(&pnp_lock);
dev->card = card;
list_add_tail(&dev->card_list, &card->devices);
* pnp_remove_card_device- removes a device from the specified card
* @dev: pointer to the device to remove
*/
-
-void pnp_remove_card_device(struct pnp_dev * dev)
+void pnp_remove_card_device(struct pnp_dev *dev)
{
spin_lock(&pnp_lock);
dev->card = NULL;
* @id: pointer to a PnP ID structure that explains the rules for finding the device
* @from: Starting place to search from. If NULL it will start from the begining.
*/
-
-struct pnp_dev * pnp_request_card_device(struct pnp_card_link *clink, const char * id, struct pnp_dev * from)
+struct pnp_dev *pnp_request_card_device(struct pnp_card_link *clink,
+ const char *id, struct pnp_dev *from)
{
- struct list_head * pos;
- struct pnp_dev * dev;
- struct pnp_card_driver * drv;
- struct pnp_card * card;
+ struct list_head *pos;
+ struct pnp_dev *dev;
+ struct pnp_card_driver *drv;
+ struct pnp_card *card;
+
if (!clink || !id)
- goto done;
+ return NULL;
+
card = clink->card;
drv = clink->driver;
if (!from) {
pos = card->devices.next;
} else {
if (from->card != card)
- goto done;
+ return NULL;
pos = from->card_list.next;
}
while (pos != &card->devices) {
dev = card_to_pnp_dev(pos);
- if ((!dev->card_link) && compare_pnp_id(dev->id,id))
+ if ((!dev->card_link) && compare_pnp_id(dev->id, id))
goto found;
pos = pos->next;
}
-done:
return NULL;
found:
- down_write(&dev->dev.bus->subsys.rwsem);
dev->card_link = clink;
dev->dev.driver = &drv->link.driver;
- if (drv->link.driver.probe) {
- if (drv->link.driver.probe(&dev->dev)) {
- dev->dev.driver = NULL;
- dev->card_link = NULL;
- up_write(&dev->dev.bus->subsys.rwsem);
- return NULL;
- }
- }
- device_bind_driver(&dev->dev);
- up_write(&dev->dev.bus->subsys.rwsem);
+ if (pnp_bus_type.probe(&dev->dev))
+ goto err_out;
+ if (device_bind_driver(&dev->dev))
+ goto err_out;
return dev;
+
+err_out:
+ dev->dev.driver = NULL;
+ dev->card_link = NULL;
+ return NULL;
}
/**
* pnp_release_card_device - call this when the driver no longer needs the device
* @dev: pointer to the PnP device stucture
*/
-
-void pnp_release_card_device(struct pnp_dev * dev)
+void pnp_release_card_device(struct pnp_dev *dev)
{
- struct pnp_card_driver * drv = dev->card_link->driver;
- if (!drv)
- return;
- down_write(&dev->dev.bus->subsys.rwsem);
+ struct pnp_card_driver *drv = dev->card_link->driver;
+
drv->link.remove = &card_remove;
device_release_driver(&dev->dev);
drv->link.remove = &card_remove_first;
- up_write(&dev->dev.bus->subsys.rwsem);
+}
+
+/*
+ * suspend/resume callbacks
+ */
+static int card_suspend(struct pnp_dev *dev, pm_message_t state)
+{
+ struct pnp_card_link *link = dev->card_link;
+
+ if (link->pm_state.event == state.event)
+ return 0;
+ link->pm_state = state;
+ return link->driver->suspend(link, state);
+}
+
+static int card_resume(struct pnp_dev *dev)
+{
+ struct pnp_card_link *link = dev->card_link;
+
+ if (link->pm_state.event == PM_EVENT_ON)
+ return 0;
+ link->pm_state = PMSG_ON;
+ link->driver->resume(link);
+ return 0;
}
/**
* pnp_register_card_driver - registers a PnP card driver with the PnP Layer
* @drv: pointer to the driver to register
*/
-
-int pnp_register_card_driver(struct pnp_card_driver * drv)
+int pnp_register_card_driver(struct pnp_card_driver *drv)
{
- int count = 0;
+ int error;
struct list_head *pos, *temp;
drv->link.name = drv->name;
drv->link.flags = drv->flags;
drv->link.probe = NULL;
drv->link.remove = &card_remove_first;
+ drv->link.suspend = drv->suspend ? card_suspend : NULL;
+ drv->link.resume = drv->resume ? card_resume : NULL;
+
+ error = pnp_register_driver(&drv->link);
+ if (error < 0)
+ return error;
spin_lock(&pnp_lock);
list_add_tail(&drv->global_list, &pnp_card_drivers);
spin_unlock(&pnp_lock);
- pnp_register_driver(&drv->link);
- list_for_each_safe(pos,temp,&pnp_cards){
- struct pnp_card *card = list_entry(pos, struct pnp_card, global_list);
- count += card_probe(card,drv);
+ list_for_each_safe(pos, temp, &pnp_cards) {
+ struct pnp_card *card =
+ list_entry(pos, struct pnp_card, global_list);
+ card_probe(card, drv);
}
- return count;
+ return 0;
}
/**
* pnp_unregister_card_driver - unregisters a PnP card driver from the PnP Layer
* @drv: pointer to the driver to unregister
*/
-
-void pnp_unregister_card_driver(struct pnp_card_driver * drv)
+void pnp_unregister_card_driver(struct pnp_card_driver *drv)
{
spin_lock(&pnp_lock);
list_del(&drv->global_list);
pnp_unregister_driver(&drv->link);
}
-EXPORT_SYMBOL(pnp_add_card);
-EXPORT_SYMBOL(pnp_remove_card);
-EXPORT_SYMBOL(pnp_add_card_device);
-EXPORT_SYMBOL(pnp_remove_card_device);
-EXPORT_SYMBOL(pnp_add_card_id);
EXPORT_SYMBOL(pnp_request_card_device);
EXPORT_SYMBOL(pnp_release_card_device);
EXPORT_SYMBOL(pnp_register_card_driver);
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff