diff options
Diffstat (limited to 'drivers/pnp')
29 files changed, 7668 insertions, 0 deletions
diff --git a/drivers/pnp/Kconfig b/drivers/pnp/Kconfig new file mode 100644 index 00000000000..6776308a1fe --- /dev/null +++ b/drivers/pnp/Kconfig @@ -0,0 +1,41 @@ +# +# Plug and Play configuration +# + +menu "Plug and Play support" + +config PNP + bool "Plug and Play support" + depends on ISA || ACPI_BUS + ---help--- + Plug and Play (PnP) is a standard for peripherals which allows those + peripherals to be configured by software, e.g. assign IRQ's or other + parameters. No jumpers on the cards are needed, instead the values + are provided to the cards from the BIOS, from the operating system, + or using a user-space utility. + + Say Y here if you would like Linux to configure your Plug and Play + devices. You should then also say Y to all of the protocols below. + Alternatively, you can say N here and configure your PnP devices + using user space utilities such as the isapnptools package. + + If unsure, say Y. + +config PNP_DEBUG + bool "PnP Debug Messages" + depends on PNP + help + Say Y if you want the Plug and Play Layer to print debug messages. + This is useful if you are developing a PnP driver or troubleshooting. + +comment "Protocols" + depends on PNP + +source "drivers/pnp/isapnp/Kconfig" + +source "drivers/pnp/pnpbios/Kconfig" + +source "drivers/pnp/pnpacpi/Kconfig" + +endmenu + diff --git a/drivers/pnp/Makefile b/drivers/pnp/Makefile new file mode 100644 index 00000000000..a381a92fd1b --- /dev/null +++ b/drivers/pnp/Makefile @@ -0,0 +1,9 @@ +# +# Makefile for the Linux Plug-and-Play Support. +# + +obj-y := core.o card.o driver.o resource.o manager.o support.o interface.o quirks.o system.o + +obj-$(CONFIG_PNPACPI) += pnpacpi/ +obj-$(CONFIG_PNPBIOS) += pnpbios/ +obj-$(CONFIG_ISAPNP) += isapnp/ diff --git a/drivers/pnp/base.h b/drivers/pnp/base.h new file mode 100644 index 00000000000..6b8c4cfd02a --- /dev/null +++ b/drivers/pnp/base.h @@ -0,0 +1,13 @@ +extern struct bus_type pnp_bus_type; +extern spinlock_t pnp_lock; +void *pnp_alloc(long size); +int pnp_interface_attach_device(struct pnp_dev *dev); +void pnp_fixup_device(struct pnp_dev *dev); +void pnp_free_option(struct pnp_option *option); +int __pnp_add_device(struct pnp_dev *dev); +void __pnp_remove_device(struct pnp_dev *dev); + +int pnp_check_port(struct pnp_dev * dev, int idx); +int pnp_check_mem(struct pnp_dev * dev, int idx); +int pnp_check_irq(struct pnp_dev * dev, int idx); +int pnp_check_dma(struct pnp_dev * dev, int idx); diff --git a/drivers/pnp/card.c b/drivers/pnp/card.c new file mode 100644 index 00000000000..97eeecfaef1 --- /dev/null +++ b/drivers/pnp/card.c @@ -0,0 +1,391 @@ +/* + * 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/slab.h> + +#ifdef CONFIG_PNP_DEBUG + #define DEBUG +#else + #undef DEBUG +#endif + +#include <linux/pnp.h> +#include "base.h" + +LIST_HEAD(pnp_cards); +LIST_HEAD(pnp_card_drivers); + + +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)) { + int i = 0; + for (;;) { + int found; + struct pnp_dev *dev; + 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)) { + found = 1; + break; + } + } + if (! found) + break; + i++; + } + } + drv_id++; + } + return NULL; +} + +static void card_remove(struct pnp_dev * dev) +{ + dev->card_link = NULL; +} + +static void card_remove_first(struct pnp_dev * dev) +{ + struct pnp_card_driver * drv = to_pnp_card_driver(dev->driver); + if (!dev->card || !drv) + return; + if (drv->remove) + drv->remove(dev->card_link); + drv->link.remove = &card_remove; + kfree(dev->card_link); + card_remove(dev); +} + +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; + } + 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) +{ + struct pnp_id * ptr; + if (!id) + return -EINVAL; + if (!card) + return -EINVAL; + id->next = NULL; + ptr = card->id; + while (ptr && ptr->next) + ptr = ptr->next; + if (ptr) + ptr->next = id; + else + card->id = id; + return 0; +} + +static void pnp_free_card_ids(struct pnp_card * card) +{ + struct pnp_id * id; + struct pnp_id *next; + if (!card) + return; + id = card->id; + while (id) { + next = id->next; + kfree(id); + id = next; + } +} + +static void pnp_release_card(struct device *dmdev) +{ + struct pnp_card * card = to_pnp_card(dmdev); + pnp_free_card_ids(card); + kfree(card); +} + + +static ssize_t pnp_show_card_name(struct device *dmdev, char *buf) +{ + char *str = buf; + struct pnp_card *card = to_pnp_card(dmdev); + str += sprintf(str,"%s\n", card->name); + return (str - buf); +} + +static DEVICE_ATTR(name,S_IRUGO,pnp_show_card_name,NULL); + +static ssize_t pnp_show_card_ids(struct device *dmdev, char *buf) +{ + char *str = buf; + struct pnp_card *card = to_pnp_card(dmdev); + struct pnp_id * pos = card->id; + + while (pos) { + 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 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); + return 0; +} + +/** + * 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 error; + struct list_head * pos, * temp; + if (!card || !card->protocol) + return -EINVAL; + + 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 == 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); + } + + /* 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; +} + +/** + * 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) +{ + 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){ + struct pnp_dev *dev = card_to_pnp_dev(pos); + pnp_remove_card_device(dev); + } +} + +/** + * pnp_add_card_device - adds a device to the specified 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) +{ + 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); + spin_lock(&pnp_lock); + dev->card = card; + list_add_tail(&dev->card_list, &card->devices); + spin_unlock(&pnp_lock); + return 0; +} + +/** + * pnp_remove_card_device- removes a device from the specified card + * @card: pointer to the card to remove from + * @dev: pointer to the device to remove + */ + +void pnp_remove_card_device(struct pnp_dev * dev) +{ + spin_lock(&pnp_lock); + dev->card = NULL; + list_del(&dev->card_list); + spin_unlock(&pnp_lock); + __pnp_remove_device(dev); +} + +/** + * pnp_request_card_device - Searches for a PnP device under the specified card + * @lcard: pointer to the card link, cannot be 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 list_head * pos; + struct pnp_dev * dev; + struct pnp_card_driver * drv; + struct pnp_card * card; + if (!clink || !id) + goto done; + card = clink->card; + drv = clink->driver; + if (!from) { + pos = card->devices.next; + } else { + if (from->card != card) + goto done; + 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)) + 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); + + return dev; +} + +/** + * 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) +{ + struct pnp_card_driver * drv = dev->card_link->driver; + if (!drv) + return; + down_write(&dev->dev.bus->subsys.rwsem); + drv->link.remove = &card_remove; + device_release_driver(&dev->dev); + drv->link.remove = &card_remove_first; + up_write(&dev->dev.bus->subsys.rwsem); +} + +/** + * 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 count = 0; + struct list_head *pos, *temp; + + drv->link.name = drv->name; + drv->link.id_table = NULL; /* this will disable auto matching */ + drv->link.flags = drv->flags; + drv->link.probe = NULL; + drv->link.remove = &card_remove_first; + + 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); + } + return count; +} + +/** + * 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) +{ + spin_lock(&pnp_lock); + list_del(&drv->global_list); + spin_unlock(&pnp_lock); + 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); +EXPORT_SYMBOL(pnp_unregister_card_driver); diff --git a/drivers/pnp/core.c b/drivers/pnp/core.c new file mode 100644 index 00000000000..deed92459bc --- /dev/null +++ b/drivers/pnp/core.c @@ -0,0 +1,180 @@ +/* + * core.c - contains all core device and protocol registration functions + * + * Copyright 2002 Adam Belay <ambx1@neo.rr.com> + * + */ + +#include <linux/pnp.h> +#include <linux/types.h> +#include <linux/list.h> +#include <linux/device.h> +#include <linux/module.h> +#include <linux/init.h> +#include <linux/string.h> +#include <linux/slab.h> +#include <linux/errno.h> + +#include "base.h" + + +static LIST_HEAD(pnp_protocols); +LIST_HEAD(pnp_global); +DEFINE_SPINLOCK(pnp_lock); + +void *pnp_alloc(long size) +{ + void *result; + + result = kmalloc(size, GFP_KERNEL); + if (!result){ + printk(KERN_ERR "pnp: Out of Memory\n"); + return NULL; + } + memset(result, 0, size); + return result; +} + +/** + * pnp_protocol_register - adds a pnp protocol to the pnp layer + * @protocol: pointer to the corresponding pnp_protocol structure + * + * Ex protocols: ISAPNP, PNPBIOS, etc + */ + +int pnp_register_protocol(struct pnp_protocol *protocol) +{ + int nodenum; + struct list_head * pos; + + if (!protocol) + return -EINVAL; + + INIT_LIST_HEAD(&protocol->devices); + INIT_LIST_HEAD(&protocol->cards); + nodenum = 0; + spin_lock(&pnp_lock); + + /* assign the lowest unused number */ + list_for_each(pos,&pnp_protocols) { + struct pnp_protocol * cur = to_pnp_protocol(pos); + if (cur->number == nodenum){ + pos = &pnp_protocols; + nodenum++; + } + } + + list_add_tail(&protocol->protocol_list, &pnp_protocols); + spin_unlock(&pnp_lock); + + protocol->number = nodenum; + sprintf(protocol->dev.bus_id, "pnp%d", nodenum); + return device_register(&protocol->dev); +} + +/** + * pnp_protocol_unregister - removes a pnp protocol from the pnp layer + * @protocol: pointer to the corresponding pnp_protocol structure + * + */ +void pnp_unregister_protocol(struct pnp_protocol *protocol) +{ + spin_lock(&pnp_lock); + list_del(&protocol->protocol_list); + spin_unlock(&pnp_lock); + device_unregister(&protocol->dev); +} + + +static void pnp_free_ids(struct pnp_dev *dev) +{ + struct pnp_id * id; + struct pnp_id * next; + if (!dev) + return; + id = dev->id; + while (id) { + next = id->next; + kfree(id); + id = next; + } +} + +static void pnp_release_device(struct device *dmdev) +{ + struct pnp_dev * dev = to_pnp_dev(dmdev); + pnp_free_option(dev->independent); + pnp_free_option(dev->dependent); + pnp_free_ids(dev); + kfree(dev); +} + +int __pnp_add_device(struct pnp_dev *dev) +{ + int ret; + pnp_fixup_device(dev); + dev->dev.bus = &pnp_bus_type; + dev->dev.release = &pnp_release_device; + dev->status = PNP_READY; + spin_lock(&pnp_lock); + list_add_tail(&dev->global_list, &pnp_global); + list_add_tail(&dev->protocol_list, &dev->protocol->devices); + spin_unlock(&pnp_lock); + + ret = device_register(&dev->dev); + if (ret == 0) + pnp_interface_attach_device(dev); + return ret; +} + +/* + * pnp_add_device - adds a pnp device to the pnp layer + * @dev: pointer to dev to add + * + * adds to driver model, name database, fixups, interface, etc. + */ + +int pnp_add_device(struct pnp_dev *dev) +{ + if (!dev || !dev->protocol || dev->card) + return -EINVAL; + dev->dev.parent = &dev->protocol->dev; + sprintf(dev->dev.bus_id, "%02x:%02x", dev->protocol->number, dev->number); + return __pnp_add_device(dev); +} + +void __pnp_remove_device(struct pnp_dev *dev) +{ + spin_lock(&pnp_lock); + list_del(&dev->global_list); + list_del(&dev->protocol_list); + spin_unlock(&pnp_lock); + device_unregister(&dev->dev); +} + +/** + * pnp_remove_device - removes a pnp device from the pnp layer + * @dev: pointer to dev to add + * + * this function will free all mem used by dev + */ + +void pnp_remove_device(struct pnp_dev *dev) +{ + if (!dev || dev->card) + return; + __pnp_remove_device(dev); +} + +static int __init pnp_init(void) +{ + printk(KERN_INFO "Linux Plug and Play Support v0.97 (c) Adam Belay\n"); + return bus_register(&pnp_bus_type); +} + +subsys_initcall(pnp_init); + +EXPORT_SYMBOL(pnp_register_protocol); +EXPORT_SYMBOL(pnp_unregister_protocol); +EXPORT_SYMBOL(pnp_add_device); +EXPORT_SYMBOL(pnp_remove_device); diff --git a/drivers/pnp/driver.c b/drivers/pnp/driver.c new file mode 100644 index 00000000000..d64c1ca4fa7 --- /dev/null +++ b/drivers/pnp/driver.c @@ -0,0 +1,222 @@ +/* + * driver.c - device id matching, driver model, etc. + * + * Copyright 2002 Adam Belay <ambx1@neo.rr.com> + * + */ + +#include <linux/config.h> +#include <linux/string.h> +#include <linux/list.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 "base.h" + +static int compare_func(const char *ida, const char *idb) +{ + int i; + /* we only need to compare the last 4 chars */ + for (i=3; i<7; i++) + { + if (ida[i] != 'X' && + idb[i] != 'X' && + toupper(ida[i]) != toupper(idb[i])) + return 0; + } + return 1; +} + +int compare_pnp_id(struct pnp_id *pos, const char *id) +{ + if (!pos || !id || (strlen(id) != 7)) + return 0; + if (memcmp(id,"ANYDEVS",7)==0) + return 1; + while (pos){ + if (memcmp(pos->id,id,3)==0) + if (compare_func(pos->id,id)==1) + return 1; + pos = pos->next; + } + return 0; +} + +static const struct pnp_device_id * match_device(struct pnp_driver *drv, struct pnp_dev *dev) +{ + const struct pnp_device_id *drv_id = drv->id_table; + if (!drv_id) + return NULL; + + while (*drv_id->id) { + if (compare_pnp_id(dev->id, drv_id->id)) + return drv_id; + drv_id++; + } + return NULL; +} + +int pnp_device_attach(struct pnp_dev *pnp_dev) +{ + spin_lock(&pnp_lock); + if(pnp_dev->status != PNP_READY){ + spin_unlock(&pnp_lock); + return -EBUSY; + } + pnp_dev->status = PNP_ATTACHED; + spin_unlock(&pnp_lock); + return 0; +} + +void pnp_device_detach(struct pnp_dev *pnp_dev) +{ + spin_lock(&pnp_lock); + if (pnp_dev->status == PNP_ATTACHED) + pnp_dev->status = PNP_READY; + spin_unlock(&pnp_lock); + pnp_disable_dev(pnp_dev); +} + +static int pnp_device_probe(struct device *dev) +{ + int error; + struct pnp_driver *pnp_drv; + struct pnp_dev *pnp_dev; + const struct pnp_device_id *dev_id = NULL; + pnp_dev = to_pnp_dev(dev); + pnp_drv = to_pnp_driver(dev->driver); + + pnp_dbg("match found with the PnP device '%s' and the driver '%s'", dev->bus_id,pnp_drv->name); + + error = pnp_device_attach(pnp_dev); + if (error < 0) + return error; + + if (pnp_dev->active == 0) { + if (!(pnp_drv->flags & PNP_DRIVER_RES_DO_NOT_CHANGE)) { + error = pnp_activate_dev(pnp_dev); + if (error < 0) + return error; + } + } else if ((pnp_drv->flags & PNP_DRIVER_RES_DISABLE) + == PNP_DRIVER_RES_DISABLE) { + error = pnp_disable_dev(pnp_dev); + if (error < 0) + return error; + } + error = 0; + if (pnp_drv->probe) { + dev_id = match_device(pnp_drv, pnp_dev); + if (dev_id != NULL) + error = pnp_drv->probe(pnp_dev, dev_id); + } + if (error >= 0){ + pnp_dev->driver = pnp_drv; + error = 0; + } else + goto fail; + return error; + +fail: + pnp_device_detach(pnp_dev); + return error; +} + +static int pnp_device_remove(struct device *dev) +{ + struct pnp_dev * pnp_dev = to_pnp_dev(dev); + struct pnp_driver * drv = pnp_dev->driver; + + if (drv) { + if (drv->remove) + drv->remove(pnp_dev); + pnp_dev->driver = NULL; + } + pnp_device_detach(pnp_dev); + return 0; +} + +static int pnp_bus_match(struct device *dev, struct device_driver *drv) +{ + struct pnp_dev * pnp_dev = to_pnp_dev(dev); + struct pnp_driver * pnp_drv = to_pnp_driver(drv); + if (match_device(pnp_drv, pnp_dev) == NULL) + return 0; + return 1; +} + + +struct bus_type pnp_bus_type = { + .name = "pnp", + .match = pnp_bus_match, +}; + + +int pnp_register_driver(struct pnp_driver *drv) +{ + int count; + struct list_head *pos; + + pnp_dbg("the driver '%s' has been registered", drv->name); + + drv->driver.name = drv->name; + drv->driver.bus = &pnp_bus_type; + drv->driver.probe = pnp_device_probe; + drv->driver.remove = pnp_device_remove; + + count = driver_register(&drv->driver); + + /* get the number of initial matches */ + if (count >= 0){ + count = 0; + list_for_each(pos,&drv->driver.devices){ + count++; + } + } + return count; +} + +void pnp_unregister_driver(struct pnp_driver *drv) +{ + driver_unregister(&drv->driver); + pnp_dbg("the driver '%s' has been unregistered", drv->name); +} + +/** + * pnp_add_id - adds an EISA id to the specified device + * @id: pointer to a pnp_id structure + * @dev: pointer to the desired device + * + */ + +int pnp_add_id(struct pnp_id *id, struct pnp_dev *dev) +{ + struct pnp_id *ptr; + if (!id) + return -EINVAL; + if (!dev) + return -EINVAL; + id->next = NULL; + ptr = dev->id; + while (ptr && ptr->next) + ptr = ptr->next; + if (ptr) + ptr->next = id; + else + dev->id = id; + return 0; +} + +EXPORT_SYMBOL(pnp_register_driver); +EXPORT_SYMBOL(pnp_unregister_driver); +EXPORT_SYMBOL(pnp_add_id); +EXPORT_SYMBOL(pnp_device_attach); +EXPORT_SYMBOL(pnp_device_detach); diff --git a/drivers/pnp/interface.c b/drivers/pnp/interface.c new file mode 100644 index 00000000000..53fac8ba5d5 --- /dev/null +++ b/drivers/pnp/interface.c @@ -0,0 +1,468 @@ +/* + * interface.c - contains everything related to the user interface + * + * Some code, especially possible resource dumping is based on isapnp_proc.c (c) Jaroslav Kysela <perex@suse.cz> + * Copyright 2002 Adam Belay <ambx1@neo.rr.com> + * + */ + +#include <linux/pnp.h> +#include <linux/string.h> +#include <linux/errno.h> +#include <linux/list.h> +#include <linux/types.h> +#include <linux/stat.h> +#include <linux/ctype.h> +#include <linux/slab.h> +#include <asm/uaccess.h> + +#include "base.h" + +struct pnp_info_buffer { + char *buffer; /* pointer to begin of buffer */ + char *curr; /* current position in buffer */ + unsigned long size; /* current size */ + unsigned long len; /* total length of buffer */ + int stop; /* stop flag */ + int error; /* error code */ +}; + +typedef struct pnp_info_buffer pnp_info_buffer_t; + +static int pnp_printf(pnp_info_buffer_t * buffer, char *fmt,...) +{ + va_list args; + int res; + + if (buffer->stop || buffer->error) + return 0; + va_start(args, fmt); + res = vsnprintf(buffer->curr, buffer->len - buffer->size, fmt, args); + va_end(args); + if (buffer->size + res >= buffer->len) { + buffer->stop = 1; + return 0; + } + buffer->curr += res; + buffer->size += res; + return res; +} + +static void pnp_print_port(pnp_info_buffer_t *buffer, char *space, struct pnp_port *port) +{ + pnp_printf(buffer, "%sport 0x%x-0x%x, align 0x%x, size 0x%x, %i-bit address decoding\n", + space, port->min, port->max, port->align ? (port->align-1) : 0, port->size, + port->flags & PNP_PORT_FLAG_16BITADDR ? 16 : 10); +} + +static void pnp_print_irq(pnp_info_buffer_t *buffer, char *space, struct pnp_irq *irq) +{ + int first = 1, i; + + pnp_printf(buffer, "%sirq ", space); + for (i = 0; i < PNP_IRQ_NR; i++) + if (test_bit(i, irq->map)) { + if (!first) { + pnp_printf(buffer, ","); + } else { + first = 0; + } + if (i == 2 || i == 9) + pnp_printf(buffer, "2/9"); + else + pnp_printf(buffer, "%i", i); + } + if (bitmap_empty(irq->map, PNP_IRQ_NR)) + pnp_printf(buffer, "<none>"); + if (irq->flags & IORESOURCE_IRQ_HIGHEDGE) + pnp_printf(buffer, " High-Edge"); + if (irq->flags & IORESOURCE_IRQ_LOWEDGE) + pnp_printf(buffer, " Low-Edge"); + if (irq->flags & IORESOURCE_IRQ_HIGHLEVEL) + pnp_printf(buffer, " High-Level"); + if (irq->flags & IORESOURCE_IRQ_LOWLEVEL) + pnp_printf(buffer, " Low-Level"); + pnp_printf(buffer, "\n"); +} + +static void pnp_print_dma(pnp_info_buffer_t *buffer, char *space, struct pnp_dma *dma) +{ + int first = 1, i; + char *s; + + pnp_printf(buffer, "%sdma ", space); + for (i = 0; i < 8; i++) + if (dma->map & (1<<i)) { + if (!first) { + pnp_printf(buffer, ","); + } else { + first = 0; + } + pnp_printf(buffer, "%i", i); + } + if (!dma->map) + pnp_printf(buffer, "<none>"); + switch (dma->flags & IORESOURCE_DMA_TYPE_MASK) { + case IORESOURCE_DMA_8BIT: + s = "8-bit"; + break; + case IORESOURCE_DMA_8AND16BIT: + s = "8-bit&16-bit"; + break; + default: + s = "16-bit"; + } + pnp_printf(buffer, " %s", s); + if (dma->flags & IORESOURCE_DMA_MASTER) + pnp_printf(buffer, " master"); + if (dma->flags & IORESOURCE_DMA_BYTE) + pnp_printf(buffer, " byte-count"); + if (dma->flags & IORESOURCE_DMA_WORD) + pnp_printf(buffer, " word-count"); + swi |