X-Git-Url: http://ftp.safe.ca/?a=blobdiff_plain;f=drivers%2Fpnp%2Fcard.c;h=e75b060daa955231af4d52a79816fa4824a17d5b;hb=26fd10517e810dd59ea050b052de24a75ee6dc07;hp=add12f7c489a9666b53983c13077505465c33bd4;hpb=3d41088fa327782b14b5659dbcfff62ec704c23c;p=safe%2Fjmp%2Flinux-2.6

diff --git a/drivers/pnp/card.c b/drivers/pnp/card.c
index add12f7..e75b060 100644
--- a/drivers/pnp/card.c
+++ b/drivers/pnp/card.c
@@ -2,45 +2,43 @@
  * 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>
-
-#ifdef CONFIG_PNP_DEBUG
-	#define DEBUG
-#else
-	#undef DEBUG
-#endif
-
 #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++;
 			}
@@ -50,14 +48,15 @@ static const struct pnp_card_device_id * match_card(struct pnp_card_driver * drv
 	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)
@@ -67,29 +66,34 @@ static void card_remove_first(struct pnp_dev * dev)
 	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;
 }
 
@@ -97,33 +101,41 @@ static int card_probe(struct pnp_card * card, struct pnp_card_driver * drv)
  * 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;
@@ -134,103 +146,141 @@ static void pnp_free_card_ids(struct pnp_card * card)
 
 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;
+	sprintf(card->dev.bus_id, "%02x:%02x", card->protocol->number,
+		card->number);
+
+	card->dev.coherent_dma_mask = DMA_24BIT_MASK;
+	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);
 	}
@@ -241,15 +291,12 @@ void pnp_remove_card(struct pnp_card * card)
  * @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);
+	snprintf(dev->dev.bus_id, BUS_ID_SIZE, "%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);
@@ -261,8 +308,7 @@ int pnp_add_card_device(struct pnp_card * card, struct pnp_dev * dev)
  * 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;
@@ -277,75 +323,95 @@ void pnp_remove_card_device(struct pnp_dev * dev)
  * @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;
-			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;
@@ -353,25 +419,30 @@ int pnp_register_card_driver(struct pnp_card_driver * drv)
 	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);
@@ -379,11 +450,6 @@ void pnp_unregister_card_driver(struct pnp_card_driver * drv)
 	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);