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 000000000000..6776308a1fe5 --- /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 000000000000..a381a92fd1b6 --- /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 000000000000..6b8c4cfd02a6 --- /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 000000000000..97eeecfaef1b --- /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 000000000000..deed92459bc5 --- /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 000000000000..d64c1ca4fa76 --- /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 000000000000..53fac8ba5d5c --- /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"); + switch (dma->flags & IORESOURCE_DMA_SPEED_MASK) { + case IORESOURCE_DMA_TYPEA: + s = "type-A"; + break; + case IORESOURCE_DMA_TYPEB: + s = "type-B"; + break; + case IORESOURCE_DMA_TYPEF: + s = "type-F"; + break; + default: + s = "compatible"; + break; + } + pnp_printf(buffer, " %s\n", s); +} + +static void pnp_print_mem(pnp_info_buffer_t *buffer, char *space, struct pnp_mem *mem) +{ + char *s; + + pnp_printf(buffer, "%sMemory 0x%x-0x%x, align 0x%x, size 0x%x", + space, mem->min, mem->max, mem->align, mem->size); + if (mem->flags & IORESOURCE_MEM_WRITEABLE) + pnp_printf(buffer, ", writeable"); + if (mem->flags & IORESOURCE_MEM_CACHEABLE) + pnp_printf(buffer, ", cacheable"); + if (mem->flags & IORESOURCE_MEM_RANGELENGTH) + pnp_printf(buffer, ", range-length"); + if (mem->flags & IORESOURCE_MEM_SHADOWABLE) + pnp_printf(buffer, ", shadowable"); + if (mem->flags & IORESOURCE_MEM_EXPANSIONROM) + pnp_printf(buffer, ", expansion ROM"); + switch (mem->flags & IORESOURCE_MEM_TYPE_MASK) { + case IORESOURCE_MEM_8BIT: + s = "8-bit"; + break; + case IORESOURCE_MEM_8AND16BIT: + s = "8-bit&16-bit"; + break; + case IORESOURCE_MEM_32BIT: + s = "32-bit"; + break; + default: + s = "16-bit"; + } + pnp_printf(buffer, ", %s\n", s); +} + +static void pnp_print_option(pnp_info_buffer_t *buffer, char *space, + struct pnp_option *option, int dep) +{ + char *s; + struct pnp_port *port; + struct pnp_irq *irq; + struct pnp_dma *dma; + struct pnp_mem *mem; + + if (dep) { + switch (option->priority) { + case PNP_RES_PRIORITY_PREFERRED: + s = "preferred"; + break; + case PNP_RES_PRIORITY_ACCEPTABLE: + s = "acceptable"; + break; + case PNP_RES_PRIORITY_FUNCTIONAL: + s = "functional"; + break; + default: + s = "invalid"; + } + pnp_printf(buffer, "Dependent: %02i - Priority %s\n",dep, s); + } + + for (port = option->port; port; port = port->next) + pnp_print_port(buffer, space, port); + for (irq = option->irq; irq; irq = irq->next) + pnp_print_irq(buffer, space, irq); + for (dma = option->dma; dma; dma = dma->next) + pnp_print_dma(buffer, space, dma); + for (mem = option->mem; mem; mem = mem->next) + pnp_print_mem(buffer, space, mem); +} + + +static ssize_t pnp_show_options(struct device *dmdev, char *buf) +{ + struct pnp_dev *dev = to_pnp_dev(dmdev); + struct pnp_option * independent = dev->independent; + struct pnp_option * dependent = dev->dependent; + int ret, dep = 1; + + pnp_info_buffer_t *buffer = (pnp_info_buffer_t *) + pnp_alloc(sizeof(pnp_info_buffer_t)); + if (!buffer) + return -ENOMEM; + + buffer->len = PAGE_SIZE; + buffer->buffer = buf; + buffer->curr = buffer->buffer; + if (independent) + pnp_print_option(buffer, "", independent, 0); + + while (dependent){ + pnp_print_option(buffer, " ", dependent, dep); + dependent = dependent->next; + dep++; + } + ret = (buffer->curr - buf); + kfree(buffer); + return ret; +} + +static DEVICE_ATTR(options,S_IRUGO,pnp_show_options,NULL); + + +static ssize_t pnp_show_current_resources(struct device *dmdev, char *buf) +{ + struct pnp_dev *dev = to_pnp_dev(dmdev); + int i, ret; + pnp_info_buffer_t *buffer; + + if (!dev) + return -EINVAL; + + buffer = (pnp_info_buffer_t *) pnp_alloc(sizeof(pnp_info_buffer_t)); + if (!buffer) + return -ENOMEM; + buffer->len = PAGE_SIZE; + buffer->buffer = buf; + buffer->curr = buffer->buffer; + + pnp_printf(buffer,"state = "); + if (dev->active) + pnp_printf(buffer,"active\n"); + else + pnp_printf(buffer,"disabled\n"); + + for (i = 0; i < PNP_MAX_PORT; i++) { + if (pnp_port_valid(dev, i)) { + pnp_printf(buffer,"io"); + if (pnp_port_flags(dev, i) & IORESOURCE_DISABLED) + pnp_printf(buffer," disabled\n"); + else + pnp_printf(buffer," 0x%lx-0x%lx\n", + pnp_port_start(dev, i), + pnp_port_end(dev, i)); + } + } + for (i = 0; i < PNP_MAX_MEM; i++) { + if (pnp_mem_valid(dev, i)) { + pnp_printf(buffer,"mem"); + if (pnp_mem_flags(dev, i) & IORESOURCE_DISABLED) + pnp_printf(buffer," disabled\n"); + else + pnp_printf(buffer," 0x%lx-0x%lx\n", + pnp_mem_start(dev, i), + pnp_mem_end(dev, i)); + } + } + for (i = 0; i < PNP_MAX_IRQ; i++) { + if (pnp_irq_valid(dev, i)) { + pnp_printf(buffer,"irq"); + if (pnp_irq_flags(dev, i) & IORESOURCE_DISABLED) + pnp_printf(buffer," disabled\n"); + else + pnp_printf(buffer," %ld\n", + pnp_irq(dev, i)); + } + } + for (i = 0; i < PNP_MAX_DMA; i++) { + if (pnp_dma_valid(dev, i)) { + pnp_printf(buffer,"dma"); + if (pnp_dma_flags(dev, i) & IORESOURCE_DISABLED) + pnp_printf(buffer," disabled\n"); + else + pnp_printf(buffer," %ld\n", + pnp_dma(dev, i)); + } + } + ret = (buffer->curr - buf); + kfree(buffer); + return ret; +} + +extern struct semaphore pnp_res_mutex; + +static ssize_t +pnp_set_current_resources(struct device * dmdev, const char * ubuf, size_t count) +{ + struct pnp_dev *dev = to_pnp_dev(dmdev); + char *buf = (void *)ubuf; + int retval = 0; + + if (dev->status & PNP_ATTACHED) { + retval = -EBUSY; + pnp_info("Device %s cannot be configured because it is in use.", dev->dev.bus_id); + goto done; + } + + while (isspace(*buf)) + ++buf; + if (!strnicmp(buf,"disable",7)) { + retval = pnp_disable_dev(dev); + goto done; + } + if (!strnicmp(buf,"activate",8)) { + retval = pnp_activate_dev(dev); + goto done; + } + if (!strnicmp(buf,"fill",4)) { + if (dev->active) + goto done; + retval = pnp_auto_config_dev(dev); + goto done; + } + if (!strnicmp(buf,"auto",4)) { + if (dev->active) + goto done; + pnp_init_resource_table(&dev->res); + retval = pnp_auto_config_dev(dev); + goto done; + } + if (!strnicmp(buf,"clear",5)) { + if (dev->active) + goto done; + pnp_init_resource_table(&dev->res); + goto done; + } + if (!strnicmp(buf,"get",3)) { + down(&pnp_res_mutex); + if (pnp_can_read(dev)) + dev->protocol->get(dev, &dev->res); + up(&pnp_res_mutex); + goto done; + } + if (!strnicmp(buf,"set",3)) { + int nport = 0, nmem = 0, nirq = 0, ndma = 0; + if (dev->active) + goto done; + buf += 3; + pnp_init_resource_table(&dev->res); + down(&pnp_res_mutex); + while (1) { + while (isspace(*buf)) + ++buf; + if (!strnicmp(buf,"io",2)) { + buf += 2; + while (isspace(*buf)) + ++buf; + dev->res.port_resource[nport].start = simple_strtoul(buf,&buf,0); + while (isspace(*buf)) + ++buf; + if(*buf == '-') { + buf += 1; + while (isspace(*buf)) + ++buf; + dev->res.port_resource[nport].end = simple_strtoul(buf,&buf,0); + } else + dev->res.port_resource[nport].end = dev->res.port_resource[nport].start; + dev->res.port_resource[nport].flags = IORESOURCE_IO; + nport++; + if (nport >= PNP_MAX_PORT) + break; + continue; + } + if (!strnicmp(buf,"mem",3)) { + buf += 3; + while (isspace(*buf)) + ++buf; + dev->res.mem_resource[nmem].start = simple_strtoul(buf,&buf,0); + while (isspace(*buf)) + ++buf; + if(*buf == '-') { + buf += 1; + while (isspace(*buf)) + ++buf; + dev->res.mem_resource[nmem].end = simple_strtoul(buf,&buf,0); + } else + dev->res.mem_resource[nmem].end = dev->res.mem_resource[nmem].start; + dev->res.mem_resource[nmem].flags = IORESOURCE_MEM; + nmem++; + if (nmem >= PNP_MAX_MEM) + break; + continue; + } + if (!strnicmp(buf,"irq",3)) { + buf += 3; + while (isspace(*buf)) + ++buf; + dev->res.irq_resource[nirq].start = + dev->res.irq_resource[nirq].end = simple_strtoul(buf,&buf,0); + dev->res.irq_resource[nirq].flags = IORESOURCE_IRQ; + nirq++; + if (nirq >= PNP_MAX_IRQ) + break; + continue; + } + if (!strnicmp(buf,"dma",3)) { + buf += 3; + while (isspace(*buf)) + ++buf; + dev->res.dma_resource[ndma].start = + dev->res.dma_resource[ndma].end = simple_strtoul(buf,&buf,0); + dev->res.dma_resource[ndma].flags = IORESOURCE_DMA; + ndma++; + if (ndma >= PNP_MAX_DMA) + break; + continue; + } + break; + } + up(&pnp_res_mutex); + goto done; + } + done: + if (retval < 0) + return retval; + return count; +} + +static DEVICE_ATTR(resources,S_IRUGO | S_IWUSR, + pnp_show_current_resources,pnp_set_current_resources); + +static ssize_t pnp_show_current_ids(struct device *dmdev, char *buf) +{ + char *str = buf; + struct pnp_dev *dev = to_pnp_dev(dmdev); + struct pnp_id * pos = dev->id; + + while (pos) { + str += sprintf(str,"%s\n", pos->id); + pos = pos->next; + } + return (str - buf); +} + +static DEVICE_ATTR(id,S_IRUGO,pnp_show_current_ids,NULL); + +int pnp_interface_attach_device(struct pnp_dev *dev) +{ + device_create_file(&dev->dev,&dev_attr_options); + device_create_file(&dev->dev,&dev_attr_resources); + device_create_file(&dev->dev,&dev_attr_id); + return 0; +} diff --git a/drivers/pnp/isapnp/Kconfig b/drivers/pnp/isapnp/Kconfig new file mode 100644 index 000000000000..578651eeb4b0 --- /dev/null +++ b/drivers/pnp/isapnp/Kconfig @@ -0,0 +1,11 @@ +# +# ISA Plug and Play configuration +# +config ISAPNP + bool "ISA Plug and Play support" + depends on PNP && ISA + help + Say Y here if you would like support for ISA Plug and Play devices. + Some information is in <file:Documentation/isapnp.txt>. + + If unsure, say Y. diff --git a/drivers/pnp/isapnp/Makefile b/drivers/pnp/isapnp/Makefile new file mode 100644 index 000000000000..cac18bbfb817 --- /dev/null +++ b/drivers/pnp/isapnp/Makefile @@ -0,0 +1,7 @@ +# +# Makefile for the kernel ISAPNP driver. +# + +isapnp-proc-$(CONFIG_PROC_FS) = proc.o + +obj-y := core.o compat.o $(isapnp-proc-y) diff --git a/drivers/pnp/isapnp/compat.c b/drivers/pnp/isapnp/compat.c new file mode 100644 index 000000000000..3ff7e76b33bd --- /dev/null +++ b/drivers/pnp/isapnp/compat.c @@ -0,0 +1,91 @@ +/* + * compat.c - A series of functions to make it easier to convert drivers that use + * the old isapnp APIs. If possible use the new APIs instead. + * + * Copyright 2002 Adam Belay <ambx1@neo.rr.com> + * + */ + +/* TODO: see if more isapnp functions are needed here */ + +#include <linux/config.h> +#include <linux/module.h> +#include <linux/isapnp.h> +#include <linux/string.h> + +static void pnp_convert_id(char *buf, unsigned short vendor, unsigned short device) +{ + sprintf(buf, "%c%c%c%x%x%x%x", + 'A' + ((vendor >> 2) & 0x3f) - 1, + 'A' + (((vendor & 3) << 3) | ((vendor >> 13) & 7)) - 1, + 'A' + ((vendor >> 8) & 0x1f) - 1, + (device >> 4) & 0x0f, + device & 0x0f, + (device >> 12) & 0x0f, + (device >> 8) & 0x0f); +} + +struct pnp_card *pnp_find_card(unsigned short vendor, + unsigned short device, + struct pnp_card *from) +{ + char id[8]; + char any[8]; + struct list_head *list; + pnp_convert_id(id, vendor, device); + pnp_convert_id(any, ISAPNP_ANY_ID, ISAPNP_ANY_ID); + + list = from ? from->global_list.next : pnp_cards.next; + + while (list != &pnp_cards) { + struct pnp_card *card = global_to_pnp_card(list); + if (compare_pnp_id(card->id,id) || (memcmp(id,any,7)==0)) + return card; + list = list->next; + } + return NULL; +} + +struct pnp_dev *pnp_find_dev(struct pnp_card *card, + unsigned short vendor, + unsigned short function, + struct pnp_dev *from) +{ + char id[8]; + char any[8]; + pnp_convert_id(id, vendor, function); + pnp_convert_id(any, ISAPNP_ANY_ID, ISAPNP_ANY_ID); + if (card == NULL) { /* look for a logical device from all cards */ + struct list_head *list; + + list = pnp_global.next; + if (from) + list = from->global_list.next; + + while (list != &pnp_global) { + struct pnp_dev *dev = global_to_pnp_dev(list); + if (compare_pnp_id(dev->id,id) || (memcmp(id,any,7)==0)) + return dev; + list = list->next; + } + } else { + struct list_head *list; + + list = card->devices.next; + if (from) { + list = from->card_list.next; + if (from->card != card) /* something is wrong */ + return NULL; + } + while (list != &card->devices) { + struct pnp_dev *dev = card_to_pnp_dev(list); + if (compare_pnp_id(dev->id,id)) + return dev; + list = list->next; + } + } + return NULL; +} + +EXPORT_SYMBOL(pnp_find_card); +EXPORT_SYMBOL(pnp_find_dev); diff --git a/drivers/pnp/isapnp/core.c b/drivers/pnp/isapnp/core.c new file mode 100644 index 000000000000..82c5edd5b9ee --- /dev/null +++ b/drivers/pnp/isapnp/core.c @@ -0,0 +1,1156 @@ +/* + * ISA Plug & Play support + * Copyright (c) by Jaroslav Kysela <perex@suse.cz> + * + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + * + * Changelog: + * 2000-01-01 Added quirks handling for buggy hardware + * Peter Denison <peterd@pnd-pc.demon.co.uk> + * 2000-06-14 Added isapnp_probe_devs() and isapnp_activate_dev() + * Christoph Hellwig <hch@infradead.org> + * 2001-06-03 Added release_region calls to correspond with + * request_region calls when a failure occurs. Also + * added KERN_* constants to printk() calls. + * 2001-11-07 Added isapnp_{,un}register_driver calls along the lines + * of the pci driver interface + * Kai Germaschewski <kai.germaschewski@gmx.de> + * 2002-06-06 Made the use of dma channel 0 configurable + * Gerald Teschl <gerald.teschl@univie.ac.at> + * 2002-10-06 Ported to PnP Layer - Adam Belay <ambx1@neo.rr.com> + * 2003-08-11 Resource Management Updates - Adam Belay <ambx1@neo.rr.com> + */ + +#include <linux/config.h> +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/errno.h> +#include <linux/slab.h> +#include <linux/delay.h> +#include <linux/init.h> +#include <linux/isapnp.h> +#include <asm/io.h> + +#if 0 +#define ISAPNP_REGION_OK +#endif +#if 0 +#define ISAPNP_DEBUG +#endif + +int isapnp_disable; /* Disable ISA PnP */ +static int isapnp_rdp; /* Read Data Port */ +static int isapnp_reset = 1; /* reset all PnP cards (deactivate) */ +static int isapnp_verbose = 1; /* verbose mode */ + +MODULE_AUTHOR("Jaroslav Kysela <perex@suse.cz>"); +MODULE_DESCRIPTION("Generic ISA Plug & Play support"); +module_param(isapnp_disable, int, 0); +MODULE_PARM_DESC(isapnp_disable, "ISA Plug & Play disable"); +module_param(isapnp_rdp, int, 0); +MODULE_PARM_DESC(isapnp_rdp, "ISA Plug & Play read data port"); +module_param(isapnp_reset, int, 0); +MODULE_PARM_DESC(isapnp_reset, "ISA Plug & Play reset all cards"); +module_param(isapnp_verbose, int, 0); +MODULE_PARM_DESC(isapnp_verbose, "ISA Plug & Play verbose mode"); +MODULE_LICENSE("GPL"); + +#define _PIDXR 0x279 +#define _PNPWRP 0xa79 + +/* short tags */ +#define _STAG_PNPVERNO 0x01 +#define _STAG_LOGDEVID 0x02 +#define _STAG_COMPATDEVID 0x03 +#define _STAG_IRQ 0x04 +#define _STAG_DMA 0x05 +#define _STAG_STARTDEP 0x06 +#define _STAG_ENDDEP 0x07 +#define _STAG_IOPORT 0x08 +#define _STAG_FIXEDIO 0x09 +#define _STAG_VENDOR 0x0e +#define _STAG_END 0x0f +/* long tags */ +#define _LTAG_MEMRANGE 0x81 +#define _LTAG_ANSISTR 0x82 +#define _LTAG_UNICODESTR 0x83 +#define _LTAG_VENDOR 0x84 +#define _LTAG_MEM32RANGE 0x85 +#define _LTAG_FIXEDMEM32RANGE 0x86 + +static unsigned char isapnp_checksum_value; +static DECLARE_MUTEX(isapnp_cfg_mutex); +static int isapnp_detected; +static int isapnp_csn_count; + +/* some prototypes */ + +static inline void write_data(unsigned char x) +{ + outb(x, _PNPWRP); +} + +static inline void write_address(unsigned char x) +{ + outb(x, _PIDXR); + udelay(20); +} + +static inline unsigned char read_data(void) +{ + unsigned char val = inb(isapnp_rdp); + return val; +} + +unsigned char isapnp_read_byte(unsigned char idx) +{ + write_address(idx); + return read_data(); +} + +static unsigned short isapnp_read_word(unsigned char idx) +{ + unsigned short val; + + val = isapnp_read_byte(idx); + val = (val << 8) + isapnp_read_byte(idx+1); + return val; +} + +void isapnp_write_byte(unsigned char idx, unsigned char val) +{ + write_address(idx); + write_data(val); +} + +static void isapnp_write_word(unsigned char idx, unsigned short val) +{ + isapnp_write_byte(idx, val >> 8); + isapnp_write_byte(idx+1, val); +} + +static void *isapnp_alloc(long size) +{ + void *result; + + result = kmalloc(size, GFP_KERNEL); + if (!result) + return NULL; + memset(result, 0, size); + return result; +} + +static void isapnp_key(void) +{ + unsigned char code = 0x6a, msb; + int i; + + mdelay(1); + write_address(0x00); + write_address(0x00); + + write_address(code); + + for (i = 1; i < 32; i++) { + msb = ((code & 0x01) ^ ((code & 0x02) >> 1)) << 7; + code = (code >> 1) | msb; + write_address(code); + } +} + +/* place all pnp cards in wait-for-key state */ +static void isapnp_wait(void) +{ + isapnp_write_byte(0x02, 0x02); +} + +static void isapnp_wake(unsigned char csn) +{ + isapnp_write_byte(0x03, csn); +} + +static void isapnp_device(unsigned char logdev) +{ + isapnp_write_byte(0x07, logdev); +} + +static void isapnp_activate(unsigned char logdev) +{ + isapnp_device(logdev); + isapnp_write_byte(ISAPNP_CFG_ACTIVATE, 1); + udelay(250); +} + +static void isapnp_deactivate(unsigned char logdev) +{ + isapnp_device(logdev); + isapnp_write_byte(ISAPNP_CFG_ACTIVATE, 0); + udelay(500); +} + +static void __init isapnp_peek(unsigned char *data, int bytes) +{ + int i, j; + unsigned char d=0; + + for (i = 1; i <= bytes; i++) { + for (j = 0; j < 20; j++) { + d = isapnp_read_byte(0x05); + if (d & 1) + break; + udelay(100); + } + if (!(d & 1)) { + if (data != NULL) + *data++ = 0xff; + continue; + } + d = isapnp_read_byte(0x04); /* PRESDI */ + isapnp_checksum_value += d; + if (data != NULL) + *data++ = d; + } +} + +#define RDP_STEP 32 /* minimum is 4 */ + +static int isapnp_next_rdp(void) +{ + int rdp = isapnp_rdp; + static int old_rdp = 0; + + if(old_rdp) + { + release_region(old_rdp, 1); + old_rdp = 0; + } + while (rdp <= 0x3ff) { + /* + * We cannot use NE2000 probe spaces for ISAPnP or we + * will lock up machines. + */ + if ((rdp < 0x280 || rdp > 0x380) && request_region(rdp, 1, "ISAPnP")) + { + isapnp_rdp = rdp; + old_rdp = rdp; + return 0; + } + rdp += RDP_STEP; + } + return -1; +} + +/* Set read port address */ +static inline void isapnp_set_rdp(void) +{ + isapnp_write_byte(0x00, isapnp_rdp >> 2); + udelay(100); +} + +/* + * Perform an isolation. The port selection code now tries to avoid + * "dangerous to read" ports. + */ + +static int __init isapnp_isolate_rdp_select(void) +{ + isapnp_wait(); + isapnp_key(); + + /* Control: reset CSN and conditionally everything else too */ + isapnp_write_byte(0x02, isapnp_reset ? 0x05 : 0x04); + mdelay(2); + + isapnp_wait(); + isapnp_key(); + isapnp_wake(0x00); + + if (isapnp_next_rdp() < 0) { + isapnp_wait(); + return -1; + } + + isapnp_set_rdp(); + udelay(1000); + write_address(0x01); + udelay(1000); + return 0; +} + +/* + * Isolate (assign uniqued CSN) to all ISA PnP devices. + */ + +static int __init isapnp_isolate(void) +{ + unsigned char checksum = 0x6a; + unsigned char chksum = 0x00; + unsigned char bit = 0x00; + int data; + int csn = 0; + int i; + int iteration = 1; + + isapnp_rdp = 0x213; + if (isapnp_isolate_rdp_select() < 0) + return -1; + + while (1) { + for (i = 1; i <= 64; i++) { + data = read_data() << 8; + udelay(250); + data = data | read_data(); + udelay(250); + if (data == 0x55aa) + bit = 0x01; + checksum = ((((checksum ^ (checksum >> 1)) & 0x01) ^ bit) << 7) | (checksum >> 1); + bit = 0x00; + } + for (i = 65; i <= 72; i++) { + data = read_data() << 8; + udelay(250); + data = data | read_data(); + udelay(250); + if (data == 0x55aa) + chksum |= (1 << (i - 65)); + } + if (checksum != 0x00 && checksum == chksum) { + csn++; + + isapnp_write_byte(0x06, csn); + udelay(250); + iteration++; + isapnp_wake(0x00); + isapnp_set_rdp(); + udelay(1000); + write_address(0x01); + udelay(1000); + goto __next; + } + if (iteration == 1) { + isapnp_rdp += RDP_STEP; + if (isapnp_isolate_rdp_select() < 0) + return -1; + } else if (iteration > 1) { + break; + } + __next: + if (csn == 255) + break; + checksum = 0x6a; + chksum = 0x00; + bit = 0x00; + } + isapnp_wait(); + isapnp_csn_count = csn; + return csn; +} + +/* + * Read one tag from stream. + */ + +static int __init isapnp_read_tag(unsigned char *type, unsigned short *size) +{ + unsigned char tag, tmp[2]; + + isapnp_peek(&tag, 1); + if (tag == 0) /* invalid tag */ + return -1; + if (tag & 0x80) { /* large item */ + *type = tag; + isapnp_peek(tmp, 2); + *size = (tmp[1] << 8) | tmp[0]; + } else { + *type = (tag >> 3) & 0x0f; + *size = tag & 0x07; + } +#if 0 + printk(KERN_DEBUG "tag = 0x%x, type = 0x%x, size = %i\n", tag, *type, *size); +#endif + if (type == 0) /* wrong type */ + return -1; + if (*type == 0xff && *size == 0xffff) /* probably invalid data */ + return -1; + return 0; +} + +/* + * Skip specified number of bytes from stream. + */ + +static void __init isapnp_skip_bytes(int count) +{ + isapnp_peek(NULL, count); +} + +/* + * Parse EISA id. + */ + +static void isapnp_parse_id(struct pnp_dev * dev, unsigned short vendor, unsigned short device) +{ + struct pnp_id * id; + if (!dev) + return; + id = isapnp_alloc(sizeof(struct pnp_id)); + if (!id) + return; + sprintf(id->id, "%c%c%c%x%x%x%x", + 'A' + ((vendor >> 2) & 0x3f) - 1, + 'A' + (((vendor & 3) << 3) | ((vendor >> 13) & 7)) - 1, + 'A' + ((vendor >> 8) & 0x1f) - 1, + (device >> 4) & 0x0f, + device & 0x0f, + (device >> 12) & 0x0f, + (device >> 8) & 0x0f); + pnp_add_id(id, dev); +} + +/* + * Parse logical device tag. + */ + +static struct pnp_dev * __init isapnp_parse_device(struct pnp_card *card, int size, int number) +{ + unsigned char tmp[6]; + struct pnp_dev *dev; + + isapnp_peek(tmp, size); + dev = isapnp_alloc(sizeof(struct pnp_dev)); + if (!dev) + return NULL; + dev->number = number; + isapnp_parse_id(dev, (tmp[1] << 8) | tmp[0], (tmp[3] << 8) | tmp[2]); + dev->regs = tmp[4]; + dev->card = card; + if (size > 5) + dev->regs |= tmp[5] << 8; + dev->protocol = &isapnp_protocol; + dev->capabilities |= PNP_CONFIGURABLE; + dev->capabilities |= PNP_READ; + dev->capabilities |= PNP_WRITE; + dev->capabilities |= PNP_DISABLE; + pnp_init_resource_table(&dev->res); + return dev; +} + + +/* + * Add IRQ resource to resources list. + */ + +static void __init isapnp_parse_irq_resource(struct pnp_option *option, + int size) +{ + unsigned char tmp[3]; + struct pnp_irq *irq; + unsigned long bits; + + isapnp_peek(tmp, size); + irq = isapnp_alloc(sizeof(struct pnp_irq)); + if (!irq) + return; + bits = (tmp[1] << 8) | tmp[0]; + bitmap_copy(irq->map, &bits, 16); + if (size > 2) + irq->flags = tmp[2]; + else + irq->flags = IORESOURCE_IRQ_HIGHEDGE; + pnp_register_irq_resource(option, irq); + return; +} + +/* + * Add DMA resource to resources list. + */ + +static void __init isapnp_parse_dma_resource(struct pnp_option *option, + int size) +{ + unsigned char tmp[2]; + struct pnp_dma *dma; + + isapnp_peek(tmp, size); + dma = isapnp_alloc(sizeof(struct pnp_dma)); + if (!dma) + return; + dma->map = tmp[0]; + dma->flags = tmp[1]; + pnp_register_dma_resource(option, dma); + return; +} + +/* + * Add port resource to resources list. + */ + +static void __init isapnp_parse_port_resource(struct pnp_option *option, + int size) +{ + unsigned char tmp[7]; + struct pnp_port *port; + + isapnp_peek(tmp, size); + port = isapnp_alloc(sizeof(struct pnp_port)); + if (!port) + return; + port->min = (tmp[2] << 8) | tmp[1]; + port->max = (tmp[4] << 8) | tmp[3]; + port->align = tmp[5]; + port->size = tmp[6]; + port->flags = tmp[0] ? PNP_PORT_FLAG_16BITADDR : 0; + pnp_register_port_resource(option,port); + return; +} + +/* + * Add fixed port resource to resources list. + */ + +static void __init isapnp_parse_fixed_port_resource(struct pnp_option *option, + int size) +{ + unsigned char tmp[3]; + struct pnp_port *port; + + isapnp_peek(tmp, size); + port = isapnp_alloc(sizeof(struct pnp_port)); + if (!port) + return; + port->min = port->max = (tmp[1] << 8) | tmp[0]; + port->size = tmp[2]; + port->align = 0; + port->flags = PNP_PORT_FLAG_FIXED; + pnp_register_port_resource(option,port); + return; +} + +/* + * Add memory resource to resources list. + */ + +static void __init isapnp_parse_mem_resource(struct pnp_option *option, + int size) +{ + unsigned char tmp[9]; + struct pnp_mem *mem; + + isapnp_peek(tmp, size); + mem = isapnp_alloc(sizeof(struct pnp_mem)); + if (!mem) + return; + mem->min = ((tmp[2] << 8) | tmp[1]) << 8; + mem->max = ((tmp[4] << 8) | tmp[3]) << 8; + mem->align = (tmp[6] << 8) | tmp[5]; + mem->size = ((tmp[8] << 8) | tmp[7]) << 8; + mem->flags = tmp[0]; + pnp_register_mem_resource(option,mem); + return; +} + +/* + * Add 32-bit memory resource to resources list. + */ + +static void __init isapnp_parse_mem32_resource(struct pnp_option *option, + int size) +{ + unsigned char tmp[17]; + struct pnp_mem *mem; + + isapnp_peek(tmp, size); + mem = isapnp_alloc(sizeof(struct pnp_mem)); + if (!mem) + return; + mem->min = (tmp[4] << 24) | (tmp[3] << 16) | (tmp[2] << 8) | tmp[1]; + mem->max = (tmp[8] << 24) | (tmp[7] << 16) | (tmp[6] << 8) | tmp[5]; + mem->align = (tmp[12] << 24) | (tmp[11] << 16) | (tmp[10] << 8) | tmp[9]; + mem->size = (tmp[16] << 24) | (tmp[15] << 16) | (tmp[14] << 8) | tmp[13]; + mem->flags = tmp[0]; + pnp_register_mem_resource(option,mem); +} + +/* + * Add 32-bit fixed memory resource to resources list. + */ + +static void __init isapnp_parse_fixed_mem32_resource(struct pnp_option *option, + int size) +{ + unsigned char tmp[9]; + struct pnp_mem *mem; + + isapnp_peek(tmp, size); + mem = isapnp_alloc(sizeof(struct pnp_mem)); + if (!mem) + return; + mem->min = mem->max = (tmp[4] << 24) | (tmp[3] << 16) | (tmp[2] << 8) | tmp[1]; + mem->size = (tmp[8] << 24) | (tmp[7] << 16) | (tmp[6] << 8) | tmp[5]; + mem->align = 0; + mem->flags = tmp[0]; + pnp_register_mem_resource(option,mem); +} + +/* + * Parse card name for ISA PnP device. + */ + +static void __init +isapnp_parse_name(char *name, unsigned int name_max, unsigned short *size) +{ + if (name[0] == '\0') { + unsigned short size1 = *size >= name_max ? (name_max - 1) : *size; + isapnp_peek(name, size1); + name[size1] = '\0'; + *size -= size1; + + /* clean whitespace from end of string */ + while (size1 > 0 && name[--size1] == ' ') + name[size1] = '\0'; + } +} + +/* + * Parse resource map for logical device. + */ + +static int __init isapnp_create_device(struct pnp_card *card, + unsigned short size) +{ + int number = 0, skip = 0, priority = 0, compat = 0; + unsigned char type, tmp[17]; + struct pnp_option *option; + struct pnp_dev *dev; + if ((dev = isapnp_parse_device(card, size, number++)) == NULL) + return 1; + option = pnp_register_independent_option(dev); + if (!option) { + kfree(dev); + return 1; + } + pnp_add_card_device(card,dev); + + while (1) { + if (isapnp_read_tag(&type, &size)<0) + return 1; + if (skip && type != _STAG_LOGDEVID && type != _STAG_END) + goto __skip; + switch (type) { + case _STAG_LOGDEVID: + if (size >= 5 && size <= 6) { + if ((dev = isapnp_parse_device(card, size, number++)) == NULL) + return 1; + size = 0; + skip = 0; + option = pnp_register_independent_option(dev); + if (!option) + return 1; + pnp_add_card_device(card,dev); + } else { + skip = 1; + } + priority = 0; + compat = 0; + break; + case _STAG_COMPATDEVID: + if (size == 4 && compat < DEVICE_COUNT_COMPATIBLE) { + isapnp_peek(tmp, 4); + isapnp_parse_id(dev,(tmp[1] << 8) | tmp[0], (tmp[3] << 8) | tmp[2]); + compat++; + size = 0; + } + break; + case _STAG_IRQ: + if (size < 2 || size > 3) + goto __skip; + isapnp_parse_irq_resource(option, size); + size = 0; + break; + case _STAG_DMA: + if (size != 2) + goto __skip; + isapnp_parse_dma_resource(option, size); + size = 0; + break; + case _STAG_STARTDEP: + if (size > 1) + goto __skip; + priority = 0x100 | PNP_RES_PRIORITY_ACCEPTABLE; + if (size > 0) { + isapnp_peek(tmp, size); + priority = 0x100 | tmp[0]; + size = 0; + } + option = pnp_register_dependent_option(dev,priority); + if (!option) + return 1; + break; + case _STAG_ENDDEP: + if (size != 0) + goto __skip; + priority = 0; + break; + case _STAG_IOPORT: + if (size != 7) + goto __skip; + isapnp_parse_port_resource(option, size); + size = 0; + break; + case _STAG_FIXEDIO: + if (size != 3) + goto __skip; + isapnp_parse_fixed_port_resource(option, size); + size = 0; + break; + case _STAG_VENDOR: + break; + case _LTAG_MEMRANGE: + if (size != 9) + goto __skip; + isapnp_parse_mem_resource(option, size); + size = 0; + break; + case _LTAG_ANSISTR: + isapnp_parse_name(dev->name, sizeof(dev->name), &size); + break; + case _LTAG_UNICODESTR: + /* silently ignore */ + /* who use unicode for hardware identification? */ + break; + case _LTAG_VENDOR: + break; + case _LTAG_MEM32RANGE: + if (size != 17) + goto __skip; + isapnp_parse_mem32_resource(option, size); + size = 0; + break; + case _LTAG_FIXEDMEM32RANGE: + if (size != 9) + goto __skip; + isapnp_parse_fixed_mem32_resource(option, size); + size = 0; + break; + case _STAG_END: + if (size > 0) + isapnp_skip_bytes(size); + return 1; + default: + printk(KERN_ERR "isapnp: unexpected or unknown tag type 0x%x for logical device %i (device %i), ignored\n", type, dev->number, card->number); + } + __skip: + if (size > 0) + isapnp_skip_bytes(size); + } + return 0; +} + +/* + * Parse resource map for ISA PnP card. + */ + +static void __init isapnp_parse_resource_map(struct pnp_card *card) +{ + unsigned char type, tmp[17]; + unsigned short size; + + while (1) { + if (isapnp_read_tag(&type, &size)<0) + return; + switch (type) { + case _STAG_PNPVERNO: + if (size != 2) + goto __skip; + isapnp_peek(tmp, 2); + card->pnpver = tmp[0]; + card->productver = tmp[1]; + size = 0; + break; + case _STAG_LOGDEVID: + if (size >= 5 && size <= 6) { + if (isapnp_create_device(card, size)==1) + return; + size = 0; + } + break; + case _STAG_VENDOR: + break; + case _LTAG_ANSISTR: + isapnp_parse_name(card->name, sizeof(card->name), &size); + break; + case _LTAG_UNICODESTR: + /* silently ignore */ + /* who use unicode for hardware identification? */ + break; + case _LTAG_VENDOR: + break; + case _STAG_END: + if (size > 0) + isapnp_skip_bytes(size); + return; + default: + printk(KERN_ERR "isapnp: unexpected or unknown tag type 0x%x for device %i, ignored\n", type, card->number); + } + __skip: + if (size > 0) + isapnp_skip_bytes(size); + } +} + +/* + * Compute ISA PnP checksum for first eight bytes. + */ + +static unsigned char __init isapnp_checksum(unsigned char *data) +{ + int i, j; + unsigned char checksum = 0x6a, bit, b; + + for (i = 0; i < 8; i++) { + b = data[i]; + for (j = 0; j < 8; j++) { + bit = 0; + if (b & (1 << j)) + bit = 1; + checksum = ((((checksum ^ (checksum >> 1)) & 0x01) ^ bit) << 7) | (checksum >> 1); + } + } + return checksum; +} + +/* + * Parse EISA id for ISA PnP card. + */ + +static void isapnp_parse_card_id(struct pnp_card * card, unsigned short vendor, unsigned short device) +{ + struct pnp_id * id = isapnp_alloc(sizeof(struct pnp_id)); + if (!id) + return; + sprintf(id->id, "%c%c%c%x%x%x%x", + 'A' + ((vendor >> 2) & 0x3f) - 1, + 'A' + (((vendor & 3) << 3) | ((vendor >> 13) & 7)) - 1, + 'A' + ((vendor >> 8) & 0x1f) - 1, + (device >> 4) & 0x0f, + device & 0x0f, + (device >> 12) & 0x0f, + (device >> 8) & 0x0f); + pnp_add_card_id(id,card); +} + +/* + * Build device list for all present ISA PnP devices. + */ + +static int __init isapnp_build_device_list(void) +{ + int csn; + unsigned char header[9], checksum; + struct pnp_card *card; + + isapnp_wait(); + isapnp_key(); + for (csn = 1; csn <= isapnp_csn_count; csn++) { + isapnp_wake(csn); + isapnp_peek(header, 9); + checksum = isapnp_checksum(header); +#if 0 + printk(KERN_DEBUG "vendor: %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x\n", + header[0], header[1], header[2], header[3], + header[4], header[5], header[6], header[7], header[8]); + printk(KERN_DEBUG "checksum = 0x%x\n", checksum); +#endif + if ((card = isapnp_alloc(sizeof(struct pnp_card))) == NULL) + continue; + + card->number = csn; + INIT_LIST_HEAD(&card->devices); + isapnp_parse_card_id(card, (header[1] << 8) | header[0], (header[3] << 8) | header[2]); + card->serial = (header[7] << 24) | (header[6] << 16) | (header[5] << 8) | header[4]; + isapnp_checksum_value = 0x00; + isapnp_parse_resource_map(card); + if (isapnp_checksum_value != 0x00) + printk(KERN_ERR "isapnp: checksum for device %i is not valid (0x%x)\n", csn, isapnp_checksum_value); + card->checksum = isapnp_checksum_value; + card->protocol = &isapnp_protocol; + + pnp_add_card(card); + } + isapnp_wait(); + return 0; +} + +/* + * Basic configuration routines. + */ + +int isapnp_present(void) +{ + struct pnp_card *card; + pnp_for_each_card(card) { + if (card->protocol == &isapnp_protocol) + return 1; + } + return 0; +} + +int isapnp_cfg_begin(int csn, int logdev) +{ + if (csn < 1 || csn > isapnp_csn_count || logdev > 10) + return -EINVAL; + down(&isapnp_cfg_mutex); + isapnp_wait(); + isapnp_key(); + isapnp_wake(csn); +#if 0 + /* to avoid malfunction when the isapnptools package is used */ + /* we must set RDP to our value again */ + /* it is possible to set RDP only in the isolation phase */ + /* Jens Thoms Toerring <Jens.Toerring@physik.fu-berlin.de> */ + isapnp_write_byte(0x02, 0x04); /* clear CSN of card */ + mdelay(2); /* is this necessary? */ + isapnp_wake(csn); /* bring card into sleep state */ + isapnp_wake(0); /* bring card into isolation state */ + isapnp_set_rdp(); /* reset the RDP port */ + udelay(1000); /* delay 1000us */ + isapnp_write_byte(0x06, csn); /* reset CSN to previous value */ + udelay(250); /* is this necessary? */ +#endif + if (logdev >= 0) + isapnp_device(logdev); + return 0; +} + +int isapnp_cfg_end(void) +{ + isapnp_wait(); + up(&isapnp_cfg_mutex); + return 0; +} + + +/* + * Inititialization. + */ + + +EXPORT_SYMBOL(isapnp_protocol); +EXPORT_SYMBOL(isapnp_present); +EXPORT_SYMBOL(isapnp_cfg_begin); +EXPORT_SYMBOL(isapnp_cfg_end); +EXPORT_SYMBOL(isapnp_read_byte); +EXPORT_SYMBOL(isapnp_write_byte); + +static int isapnp_read_resources(struct pnp_dev *dev, struct pnp_resource_table *res) +{ + int tmp, ret; + + dev->active = isapnp_read_byte(ISAPNP_CFG_ACTIVATE); + if (dev->active) { + for (tmp = 0; tmp < PNP_MAX_PORT; tmp++) { + ret = isapnp_read_word(ISAPNP_CFG_PORT + (tmp << 1)); + if (!ret) + continue; + res->port_resource[tmp].start = ret; + res->port_resource[tmp].flags = IORESOURCE_IO; + } + for (tmp = 0; tmp < PNP_MAX_MEM; tmp++) { + ret = isapnp_read_word(ISAPNP_CFG_MEM + (tmp << 3)) << 8; + if (!ret) + continue; + res->mem_resource[tmp].start = ret; + res->mem_resource[tmp].flags = IORESOURCE_MEM; + } + for (tmp = 0; tmp < PNP_MAX_IRQ; tmp++) { + ret = (isapnp_read_word(ISAPNP_CFG_IRQ + (tmp << 1)) >> 8); + if (!ret) + continue; + res->irq_resource[tmp].start = res->irq_resource[tmp].end = ret; + res->irq_resource[tmp].flags = IORESOURCE_IRQ; + } + for (tmp = 0; tmp < PNP_MAX_DMA; tmp++) { + ret = isapnp_read_byte(ISAPNP_CFG_DMA + tmp); + if (ret == 4) + continue; + res->dma_resource[tmp].start = res->dma_resource[tmp].end = ret; + res->dma_resource[tmp].flags = IORESOURCE_DMA; + } + } + return 0; +} + +static int isapnp_get_resources(struct pnp_dev *dev, struct pnp_resource_table * res) +{ + int ret; + pnp_init_resource_table(res); + isapnp_cfg_begin(dev->card->number, dev->number); + ret = isapnp_read_resources(dev, res); + isapnp_cfg_end(); + return ret; +} + +static int isapnp_set_resources(struct pnp_dev *dev, struct pnp_resource_table * res) +{ + int tmp; + + isapnp_cfg_begin(dev->card->number, dev->number); + dev->active = 1; + for (tmp = 0; tmp < PNP_MAX_PORT && (res->port_resource[tmp].flags & (IORESOURCE_IO | IORESOURCE_UNSET)) == IORESOURCE_IO; tmp++) + isapnp_write_word(ISAPNP_CFG_PORT+(tmp<<1), res->port_resource[tmp].start); + for (tmp = 0; tmp < PNP_MAX_IRQ && (res->irq_resource[tmp].flags & (IORESOURCE_IRQ | IORESOURCE_UNSET)) == IORESOURCE_IRQ; tmp++) { + int irq = res->irq_resource[tmp].start; + if (irq == 2) + irq = 9; + isapnp_write_byte(ISAPNP_CFG_IRQ+(tmp<<1), irq); + } + for (tmp = 0; tmp < PNP_MAX_DMA && (res->dma_resource[tmp].flags & (IORESOURCE_DMA | IORESOURCE_UNSET)) == IORESOURCE_DMA; tmp++) + isapnp_write_byte(ISAPNP_CFG_DMA+tmp, res->dma_resource[tmp].start); + for (tmp = 0; tmp < PNP_MAX_MEM && (res->mem_resource[tmp].flags & (IORESOURCE_MEM | IORESOURCE_UNSET)) == IORESOURCE_MEM; tmp++) + isapnp_write_word(ISAPNP_CFG_MEM+(tmp<<3), (res->mem_resource[tmp].start >> 8) & 0xffff); + /* FIXME: We aren't handling 32bit mems properly here */ + isapnp_activate(dev->number); + isapnp_cfg_end(); + return 0; +} + +static int isapnp_disable_resources(struct pnp_dev *dev) +{ + if (!dev || !dev->active) + return -EINVAL; + isapnp_cfg_begin(dev->card->number, dev->number); + isapnp_deactivate(dev->number); + dev->active = 0; + isapnp_cfg_end(); + return 0; +} + +struct pnp_protocol isapnp_protocol = { + .name = "ISA Plug and Play", + .get = isapnp_get_resources, + .set = isapnp_set_resources, + .disable = isapnp_disable_resources, +}; + +static int __init isapnp_init(void) +{ + int cards; + struct pnp_card *card; + struct pnp_dev *dev; + + if (isapnp_disable) { + isapnp_detected = 0; + printk(KERN_INFO "isapnp: ISA Plug & Play support disabled\n"); + return 0; + } +#ifdef ISAPNP_REGION_OK + if (!request_region(_PIDXR, 1, "isapnp index")) { + printk(KERN_ERR "isapnp: Index Register 0x%x already used\n", _PIDXR); + return -EBUSY; + } +#endif + if (!request_region(_PNPWRP, 1, "isapnp write")) { + printk(KERN_ERR "isapnp: Write Data Register 0x%x already used\n", _PNPWRP); +#ifdef ISAPNP_REGION_OK + release_region(_PIDXR, 1); +#endif + return -EBUSY; + } + + if(pnp_register_protocol(&isapnp_protocol)<0) + return -EBUSY; + + /* + * Print a message. The existing ISAPnP code is hanging machines + * so let the user know where. + */ + + printk(KERN_INFO "isapnp: Scanning for PnP cards...\n"); + if (isapnp_rdp >= 0x203 && isapnp_rdp <= 0x3ff) { + isapnp_rdp |= 3; + if (!request_region(isapnp_rdp, 1, "isapnp read")) { + printk(KERN_ERR "isapnp: Read Data Register 0x%x already used\n", isapnp_rdp); +#ifdef ISAPNP_REGION_OK + release_region(_PIDXR, 1); +#endif + release_region(_PNPWRP, 1); + return -EBUSY; + } + isapnp_set_rdp(); + } + isapnp_detected = 1; + if (isapnp_rdp < 0x203 || isapnp_rdp > 0x3ff) { + cards = isapnp_isolate(); + if (cards < 0 || + (isapnp_rdp < 0x203 || isapnp_rdp > 0x3ff)) { +#ifdef ISAPNP_REGION_OK + release_region(_PIDXR, 1); +#endif + release_region(_PNPWRP, 1); + isapnp_detected = 0; + printk(KERN_INFO "isapnp: No Plug & Play device found\n"); + return 0; + } + request_region(isapnp_rdp, 1, "isapnp read"); + } + isapnp_build_device_list(); + cards = 0; + + protocol_for_each_card(&isapnp_protocol,card) { + cards++; + if (isapnp_verbose) { + printk(KERN_INFO "isapnp: Card '%s'\n", card->name[0]?card->name:"Unknown"); + if (isapnp_verbose < 2) + continue; + card_for_each_dev(card,dev) { + printk(KERN_INFO "isapnp: Device '%s'\n", dev->name[0]?dev->name:"Unknown"); + } + } + } + if (cards) { + printk(KERN_INFO "isapnp: %i Plug & Play card%s detected total\n", cards, cards>1?"s":""); + } else { + printk(KERN_INFO "isapnp: No Plug & Play card found\n"); + } + + isapnp_proc_init(); + return 0; +} + +device_initcall(isapnp_init); + +/* format is: noisapnp */ + +static int __init isapnp_setup_disable(char *str) +{ + isapnp_disable = 1; + return 1; +} + +__setup("noisapnp", isapnp_setup_disable); + +/* format is: isapnp=rdp,reset,skip_pci_scan,verbose */ + +static int __init isapnp_setup_isapnp(char *str) +{ + (void)((get_option(&str,&isapnp_rdp) == 2) && + (get_option(&str,&isapnp_reset) == 2) && + (get_option(&str,&isapnp_verbose) == 2)); + return 1; +} + +__setup("isapnp=", isapnp_setup_isapnp); + diff --git a/drivers/pnp/isapnp/proc.c b/drivers/pnp/isapnp/proc.c new file mode 100644 index 000000000000..cf54b0a3628e --- /dev/null +++ b/drivers/pnp/isapnp/proc.c @@ -0,0 +1,171 @@ +/* + * ISA Plug & Play support + * Copyright (c) by Jaroslav Kysela <perex@suse.cz> + * + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + * + */ + +#include <linux/config.h> +#include <linux/module.h> +#include <linux/isapnp.h> +#include <linux/proc_fs.h> +#include <linux/init.h> +#include <linux/smp_lock.h> +#include <asm/uaccess.h> + +extern struct pnp_protocol isapnp_protocol; + +static struct proc_dir_entry *isapnp_proc_bus_dir = NULL; + +static loff_t isapnp_proc_bus_lseek(struct file *file, loff_t off, int whence) +{ + loff_t new = -1; + + lock_kernel(); + switch (whence) { + case 0: + new = off; + break; + case 1: + new = file->f_pos + off; + break; + case 2: + new = 256 + off; + break; + } + if (new < 0 || new > 256) { + unlock_kernel(); + return -EINVAL; + } + unlock_kernel(); + return (file->f_pos = new); +} + +static ssize_t isapnp_proc_bus_read(struct file *file, char __user *buf, size_t nbytes, loff_t *ppos) +{ + struct inode *ino = file->f_dentry->d_inode; + struct proc_dir_entry *dp = PDE(ino); + struct pnp_dev *dev = dp->data; + int pos = *ppos; + int cnt, size = 256; + + if (pos >= size) + return 0; + if (nbytes >= size) + nbytes = size; + if (pos + nbytes > size) + nbytes = size - pos; + cnt = nbytes; + + if (!access_ok(VERIFY_WRITE, buf, cnt)) + return -EINVAL; + + isapnp_cfg_begin(dev->card->number, dev->number); + for ( ; pos < 256 && cnt > 0; pos++, buf++, cnt--) { + unsigned char val; + val = isapnp_read_byte(pos); + __put_user(val, buf); + } + isapnp_cfg_end(); + + *ppos = pos; + return nbytes; +} + +static struct file_operations isapnp_proc_bus_file_operations = +{ + .llseek = isapnp_proc_bus_lseek, + .read = isapnp_proc_bus_read, +}; + +static int isapnp_proc_attach_device(struct pnp_dev *dev) +{ + struct pnp_card *bus = dev->card; + struct proc_dir_entry *de, *e; + char name[16]; + + if (!(de = bus->procdir)) { + sprintf(name, "%02x", bus->number); + de = bus->procdir = proc_mkdir(name, isapnp_proc_bus_dir); + if (!de) + return -ENOMEM; + } + sprintf(name, "%02x", dev->number); + e = dev->procent = create_proc_entry(name, S_IFREG | S_IRUGO, de); + if (!e) + return -ENOMEM; + e->proc_fops = &isapnp_proc_bus_file_operations; + e->owner = THIS_MODULE; + e->data = dev; + e->size = 256; + return 0; +} + +#ifdef MODULE +static int __exit isapnp_proc_detach_device(struct pnp_dev *dev) +{ + struct pnp_card *bus = dev->card; + struct proc_dir_entry *de; + char name[16]; + + if (!(de = bus->procdir)) + return -EINVAL; + sprintf(name, "%02x", dev->number); + remove_proc_entry(name, de); + return 0; +} + +static int __exit isapnp_proc_detach_bus(struct pnp_card *bus) +{ + struct proc_dir_entry *de; + char name[16]; + + if (!(de = bus->procdir)) + return -EINVAL; + sprintf(name, "%02x", bus->number); + remove_proc_entry(name, isapnp_proc_bus_dir); + return 0; +} +#endif /* MODULE */ + +int __init isapnp_proc_init(void) +{ + struct pnp_dev *dev; + isapnp_proc_bus_dir = proc_mkdir("isapnp", proc_bus); + protocol_for_each_dev(&isapnp_protocol,dev) { + isapnp_proc_attach_device(dev); + } + return 0; +} + +#ifdef MODULE +int __exit isapnp_proc_done(void) +{ + struct pnp_dev *dev; + struct pnp_bus *card; + + isapnp_for_each_dev(dev) { + isapnp_proc_detach_device(dev); + } + isapnp_for_each_card(card) { + isapnp_proc_detach_bus(card); + } + if (isapnp_proc_bus_dir) + remove_proc_entry("isapnp", proc_bus); + return 0; +} +#endif /* MODULE */ diff --git a/drivers/pnp/manager.c b/drivers/pnp/manager.c new file mode 100644 index 000000000000..639e04253482 --- /dev/null +++ b/drivers/pnp/manager.c @@ -0,0 +1,566 @@ +/* + * manager.c - Resource Management, Conflict Resolution, Activation and Disabling of Devices + * + * based on isapnp.c resource management (c) Jaroslav Kysela <perex@suse.cz> + * Copyright 2003 Adam Belay <ambx1@neo.rr.com> + * + */ + +#include <linux/config.h> +#include <linux/errno.h> +#include <linux/module.h> +#include <linux/init.h> +#include <linux/kernel.h> + +#ifdef CONFIG_PNP_DEBUG + #define DEBUG +#else + #undef DEBUG +#endif + +#include <linux/pnp.h> +#include "base.h" + +DECLARE_MUTEX(pnp_res_mutex); + +static int pnp_assign_port(struct pnp_dev *dev, struct pnp_port *rule, int idx) +{ + unsigned long *start, *end, *flags; + + if (!dev || !rule) + return -EINVAL; + + if (idx >= PNP_MAX_PORT) { + pnp_err("More than 4 ports is incompatible with pnp specifications."); + /* pretend we were successful so at least the manager won't try again */ + return 1; + } + + /* check if this resource has been manually set, if so skip */ + if (!(dev->res.port_resource[idx].flags & IORESOURCE_AUTO)) + return 1; + + start = &dev->res.port_resource[idx].start; + end = &dev->res.port_resource[idx].end; + flags = &dev->res.port_resource[idx].flags; + + /* set the initial values */ + *flags |= rule->flags | IORESOURCE_IO; + *flags &= ~IORESOURCE_UNSET; + + if (!rule->size) { + *flags |= IORESOURCE_DISABLED; + return 1; /* skip disabled resource requests */ + } + + *start = rule->min; + *end = *start + rule->size - 1; + + /* run through until pnp_check_port is happy */ + while (!pnp_check_port(dev, idx)) { + *start += rule->align; + *end = *start + rule->size - 1; + if (*start > rule->max || !rule->align) + return 0; + } + return 1; +} + +static int pnp_assign_mem(struct pnp_dev *dev, struct pnp_mem *rule, int idx) +{ + unsigned long *start, *end, *flags; + + if (!dev || !rule) + return -EINVAL; + + if (idx >= PNP_MAX_MEM) { + pnp_err("More than 8 mems is incompatible with pnp specifications."); + /* pretend we were successful so at least the manager won't try again */ + return 1; + } + + /* check if this resource has been manually set, if so skip */ + if (!(dev->res.mem_resource[idx].flags & IORESOURCE_AUTO)) + return 1; + + start = &dev->res.mem_resource[idx].start; + end = &dev->res.mem_resource[idx].end; + flags = &dev->res.mem_resource[idx].flags; + + /* set the initial values */ + *flags |= rule->flags | IORESOURCE_MEM; + *flags &= ~IORESOURCE_UNSET; + + /* convert pnp flags to standard Linux flags */ + if (!(rule->flags & IORESOURCE_MEM_WRITEABLE)) + *flags |= IORESOURCE_READONLY; + if (rule->flags & IORESOURCE_MEM_CACHEABLE) + *flags |= IORESOURCE_CACHEABLE; + if (rule->flags & IORESOURCE_MEM_RANGELENGTH) + *flags |= IORESOURCE_RANGELENGTH; + if (rule->flags & IORESOURCE_MEM_SHADOWABLE) + *flags |= IORESOURCE_SHADOWABLE; + + if (!rule->size) { + *flags |= IORESOURCE_DISABLED; + return 1; /* skip disabled resource requests */ + } + + *start = rule->min; + *end = *start + rule->size -1; + + /* run through until pnp_check_mem is happy */ + while (!pnp_check_mem(dev, idx)) { + *start += rule->align; + *end = *start + rule->size - 1; + if (*start > rule->max || !rule->align) + return 0; + } + return 1; +} + +static int pnp_assign_irq(struct pnp_dev * dev, struct pnp_irq *rule, int idx) +{ + unsigned long *start, *end, *flags; + int i; + + /* IRQ priority: this table is good for i386 */ + static unsigned short xtab[16] = { + 5, 10, 11, 12, 9, 14, 15, 7, 3, 4, 13, 0, 1, 6, 8, 2 + }; + + if (!dev || !rule) + return -EINVAL; + + if (idx >= PNP_MAX_IRQ) { + pnp_err("More than 2 irqs is incompatible with pnp specifications."); + /* pretend we were successful so at least the manager won't try again */ + return 1; + } + + /* check if this resource has been manually set, if so skip */ + if (!(dev->res.irq_resource[idx].flags & IORESOURCE_AUTO)) + return 1; + + start = &dev->res.irq_resource[idx].start; + end = &dev->res.irq_resource[idx].end; + flags = &dev->res.irq_resource[idx].flags; + + /* set the initial values */ + *flags |= rule->flags | IORESOURCE_IRQ; + *flags &= ~IORESOURCE_UNSET; + + if (bitmap_empty(rule->map, PNP_IRQ_NR)) { + *flags |= IORESOURCE_DISABLED; + return 1; /* skip disabled resource requests */ + } + + /* TBD: need check for >16 IRQ */ + *start = find_next_bit(rule->map, PNP_IRQ_NR, 16); + if (*start < PNP_IRQ_NR) { + *end = *start; + return 1; + } + for (i = 0; i < 16; i++) { + if(test_bit(xtab[i], rule->map)) { + *start = *end = xtab[i]; + if(pnp_check_irq(dev, idx)) + return 1; + } + } + return 0; +} + +static int pnp_assign_dma(struct pnp_dev *dev, struct pnp_dma *rule, int idx) +{ + unsigned long *start, *end, *flags; + int i; + + /* DMA priority: this table is good for i386 */ + static unsigned short xtab[8] = { + 1, 3, 5, 6, 7, 0, 2, 4 + }; + + if (!dev || !rule) + return -EINVAL; + + if (idx >= PNP_MAX_DMA) { + pnp_err("More than 2 dmas is incompatible with pnp specifications."); + /* pretend we were successful so at least the manager won't try again */ + return 1; + } + + /* check if this resource has been manually set, if so skip */ + if (!(dev->res.dma_resource[idx].flags & IORESOURCE_AUTO)) + return 1; + + start = &dev->res.dma_resource[idx].start; + end = &dev->res.dma_resource[idx].end; + flags = &dev->res.dma_resource[idx].flags; + + /* set the initial values */ + *flags |= rule->flags | IORESOURCE_DMA; + *flags &= ~IORESOURCE_UNSET; + + if (!rule->map) { + *flags |= IORESOURCE_DISABLED; + return 1; /* skip disabled resource requests */ + } + + for (i = 0; i < 8; i++) { + if(rule->map & (1<<xtab[i])) { + *start = *end = xtab[i]; + if(pnp_check_dma(dev, idx)) + return 1; + } + } + return 0; +} + +/** + * pnp_init_resources - Resets a resource table to default values. + * @table: pointer to the desired resource table + * + */ +void pnp_init_resource_table(struct pnp_resource_table *table) +{ + int idx; + for (idx = 0; idx < PNP_MAX_IRQ; idx++) { + table->irq_resource[idx].name = NULL; + table->irq_resource[idx].start = -1; + table->irq_resource[idx].end = -1; + table->irq_resource[idx].flags = IORESOURCE_IRQ | IORESOURCE_AUTO | IORESOURCE_UNSET; + } + for (idx = 0; idx < PNP_MAX_DMA; idx++) { + table->dma_resource[idx].name = NULL; + table->dma_resource[idx].start = -1; + table->dma_resource[idx].end = -1; + table->dma_resource[idx].flags = IORESOURCE_DMA | IORESOURCE_AUTO | IORESOURCE_UNSET; + } + for (idx = 0; idx < PNP_MAX_PORT; idx++) { + table->port_resource[idx].name = NULL; + table->port_resource[idx].start = 0; + table->port_resource[idx].end = 0; + table->port_resource[idx].flags = IORESOURCE_IO | IORESOURCE_AUTO | IORESOURCE_UNSET; + } + for (idx = 0; idx < PNP_MAX_MEM; idx++) { + table->mem_resource[idx].name = NULL; + table->mem_resource[idx].start = 0; + table->mem_resource[idx].end = 0; + table->mem_resource[idx].flags = IORESOURCE_MEM | IORESOURCE_AUTO | IORESOURCE_UNSET; + } +} + +/** + * pnp_clean_resources - clears resources that were not manually set + * @res - the resources to clean + * + */ +static void pnp_clean_resource_table(struct pnp_resource_table * res) +{ + int idx; + for (idx = 0; idx < PNP_MAX_IRQ; idx++) { + if (!(res->irq_resource[idx].flags & IORESOURCE_AUTO)) + continue; + res->irq_resource[idx].start = -1; + res->irq_resource[idx].end = -1; + res->irq_resource[idx].flags = IORESOURCE_IRQ | IORESOURCE_AUTO | IORESOURCE_UNSET; + } + for (idx = 0; idx < PNP_MAX_DMA; idx++) { + if (!(res->dma_resource[idx].flags & IORESOURCE_AUTO)) + continue; + res->dma_resource[idx].start = -1; + res->dma_resource[idx].end = -1; + res->dma_resource[idx].flags = IORESOURCE_DMA | IORESOURCE_AUTO | IORESOURCE_UNSET; + } + for (idx = 0; idx < PNP_MAX_PORT; idx++) { + if (!(res->port_resource[idx].flags & IORESOURCE_AUTO)) + continue; + res->port_resource[idx].start = 0; + res->port_resource[idx].end = 0; + res->port_resource[idx].flags = IORESOURCE_IO | IORESOURCE_AUTO | IORESOURCE_UNSET; + } + for (idx = 0; idx < PNP_MAX_MEM; idx++) { + if (!(res->mem_resource[idx].flags & IORESOURCE_AUTO)) + continue; + res->mem_resource[idx].start = 0; + res->mem_resource[idx].end = 0; + res->mem_resource[idx].flags = IORESOURCE_MEM | IORESOURCE_AUTO | IORESOURCE_UNSET; + } +} + +/** + * pnp_assign_resources - assigns resources to the device based on the specified dependent number + * @dev: pointer to the desired device + * @depnum: the dependent function number + * + * Only set depnum to 0 if the device does not have dependent options. + */ +static int pnp_assign_resources(struct pnp_dev *dev, int depnum) +{ + struct pnp_port *port; + struct pnp_mem *mem; + struct pnp_irq *irq; + struct pnp_dma *dma; + int nport = 0, nmem = 0, nirq = 0, ndma = 0; + + if (!pnp_can_configure(dev)) + return -ENODEV; + + down(&pnp_res_mutex); + pnp_clean_resource_table(&dev->res); /* start with a fresh slate */ + if (dev->independent) { + port = dev->independent->port; + mem = dev->independent->mem; + irq = dev->independent->irq; + dma = dev->independent->dma; + while (port) { + if (!pnp_assign_port(dev, port, nport)) + goto fail; + nport++; + port = port->next; + } + while (mem) { + if (!pnp_assign_mem(dev, mem, nmem)) + goto fail; + nmem++; + mem = mem->next; + } + while (irq) { + if (!pnp_assign_irq(dev, irq, nirq)) + goto fail; + nirq++; + irq = irq->next; + } + while (dma) { + if (!pnp_assign_dma(dev, dma, ndma)) + goto fail; + ndma++; + dma = dma->next; + } + } + + if (depnum) { + struct pnp_option *dep; + int i; + for (i=1,dep=dev->dependent; i<depnum; i++, dep=dep->next) + if(!dep) + goto fail; + port =dep->port; + mem = dep->mem; + irq = dep->irq; + dma = dep->dma; + while (port) { + if (!pnp_assign_port(dev, port, nport)) + goto fail; + nport++; + port = port->next; + } + while (mem) { + if (!pnp_assign_mem(dev, mem, nmem)) + goto fail; + nmem++; + mem = mem->next; + } + while (irq) { + if (!pnp_assign_irq(dev, irq, nirq)) + goto fail; + nirq++; + irq = irq->next; + } + while (dma) { + if (!pnp_assign_dma(dev, dma, ndma)) + goto fail; + ndma++; + dma = dma->next; + } + } else if (dev->dependent) + goto fail; + + up(&pnp_res_mutex); + return 1; + +fail: + pnp_clean_resource_table(&dev->res); + up(&pnp_res_mutex); + return 0; +} + +/** + * pnp_manual_config_dev - Disables Auto Config and Manually sets the resource table + * @dev: pointer to the desired device + * @res: pointer to the new resource config + * + * This function can be used by drivers that want to manually set thier resources. + */ +int pnp_manual_config_dev(struct pnp_dev *dev, struct pnp_resource_table * res, int mode) +{ + int i; + struct pnp_resource_table * bak; + if (!dev || !res) + return -EINVAL; + if (!pnp_can_configure(dev)) + return -ENODEV; + bak = pnp_alloc(sizeof(struct pnp_resource_table)); + if (!bak) + return -ENOMEM; + *bak = dev->res; + + down(&pnp_res_mutex); + dev->res = *res; + if (!(mode & PNP_CONFIG_FORCE)) { + for (i = 0; i < PNP_MAX_PORT; i++) { + if(!pnp_check_port(dev,i)) + goto fail; + } + for (i = 0; i < PNP_MAX_MEM; i++) { + if(!pnp_check_mem(dev,i)) + goto fail; + } + for (i = 0; i < PNP_MAX_IRQ; i++) { + if(!pnp_check_irq(dev,i)) + goto fail; + } + for (i = 0; i < PNP_MAX_DMA; i++) { + if(!pnp_check_dma(dev,i)) + goto fail; + } + } + up(&pnp_res_mutex); + + kfree(bak); + return 0; + +fail: + dev->res = *bak; + up(&pnp_res_mutex); + kfree(bak); + return -EINVAL; +} + +/** + * pnp_auto_config_dev - automatically assigns resources to a device + * @dev: pointer to the desired device + * + */ +int pnp_auto_config_dev(struct pnp_dev *dev) +{ + struct pnp_option *dep; + int i = 1; + + if(!dev) + return -EINVAL; + + if(!pnp_can_configure(dev)) { + pnp_info("Device %s does not support resource configuration.", dev->dev.bus_id); + return -ENODEV; + } + + if (!dev->dependent) { + if (pnp_assign_resources(dev, 0)) + return 0; + } else { + dep = dev->dependent; + do { + if (pnp_assign_resources(dev, i)) + return 0; + dep = dep->next; + i++; + } while (dep); + } + + pnp_err("Unable to assign resources to device %s.", dev->dev.bus_id); + return -EBUSY; +} + +/** + * pnp_activate_dev - activates a PnP device for use + * @dev: pointer to the desired device + * + * does not validate or set resources so be careful. + */ +int pnp_activate_dev(struct pnp_dev *dev) +{ + if (!dev) + return -EINVAL; + if (dev->active) { + return 0; /* the device is already active */ + } + + /* ensure resources are allocated */ + if (pnp_auto_config_dev(dev)) + return -EBUSY; + + if (!pnp_can_write(dev)) { + pnp_info("Device %s does not supported activation.", dev->dev.bus_id); + return -EINVAL; + } + + if (dev->protocol->set(dev, &dev->res)<0) { + pnp_err("Failed to activate device %s.", dev->dev.bus_id); + return -EIO; + } + + dev->active = 1; + pnp_info("Device %s activated.", dev->dev.bus_id); + + return 1; +} + +/** + * pnp_disable_dev - disables device + * @dev: pointer to the desired device + * + * inform the correct pnp protocol so that resources can be used by other devices + */ +int pnp_disable_dev(struct pnp_dev *dev) +{ + if (!dev) + return -EINVAL; + if (!dev->active) { + return 0; /* the device is already disabled */ + } + + if (!pnp_can_disable(dev)) { + pnp_info("Device %s does not supported disabling.", dev->dev.bus_id); + return -EINVAL; + } + if (dev->protocol->disable(dev)<0) { + pnp_err("Failed to disable device %s.", dev->dev.bus_id); + return -EIO; + } + + dev->active = 0; + pnp_info("Device %s disabled.", dev->dev.bus_id); + + /* release the resources so that other devices can use them */ + down(&pnp_res_mutex); + pnp_clean_resource_table(&dev->res); + up(&pnp_res_mutex); + + return 1; +} + +/** + * pnp_resource_change - change one resource + * @resource: pointer to resource to be changed + * @start: start of region + * @size: size of region + * + */ +void pnp_resource_change(struct resource *resource, unsigned long start, unsigned long size) +{ + if (resource == NULL) + return; + resource->flags &= ~(IORESOURCE_AUTO | IORESOURCE_UNSET); + resource->start = start; + resource->end = start + size - 1; +} + + +EXPORT_SYMBOL(pnp_manual_config_dev); +EXPORT_SYMBOL(pnp_auto_config_dev); +EXPORT_SYMBOL(pnp_activate_dev); +EXPORT_SYMBOL(pnp_disable_dev); +EXPORT_SYMBOL(pnp_resource_change); +EXPORT_SYMBOL(pnp_init_resource_table); diff --git a/drivers/pnp/pnpacpi/Kconfig b/drivers/pnp/pnpacpi/Kconfig new file mode 100644 index 000000000000..0782cdc5009f --- /dev/null +++ b/drivers/pnp/pnpacpi/Kconfig @@ -0,0 +1,18 @@ +# +# Plug and Play ACPI configuration +# +config PNPACPI + bool "Plug and Play ACPI support (EXPERIMENTAL)" + depends on PNP && ACPI_BUS && EXPERIMENTAL + default y + ---help--- + Linux uses the PNPACPI to autodetect built-in + mainboard resources (e.g. parallel port resources). + + Some features (e.g. real hotplug) are not currently + implemented. + + If you would like the kernel to detect and allocate resources to + your mainboard devices (on some systems they are disabled by the + BIOS) say Y here. Also the PNPACPI can help prevent resource + conflicts between mainboard devices and other bus devices. diff --git a/drivers/pnp/pnpacpi/Makefile b/drivers/pnp/pnpacpi/Makefile new file mode 100644 index 000000000000..905326fcca85 --- /dev/null +++ b/drivers/pnp/pnpacpi/Makefile @@ -0,0 +1,5 @@ +# +# Makefile for the kernel PNPACPI driver. +# + +obj-y := core.o rsparser.o diff --git a/drivers/pnp/pnpacpi/core.c b/drivers/pnp/pnpacpi/core.c new file mode 100644 index 000000000000..8655dd2e5b83 --- /dev/null +++ b/drivers/pnp/pnpacpi/core.c @@ -0,0 +1,269 @@ +/* + * pnpacpi -- PnP ACPI driver + * + * Copyright (c) 2004 Matthieu Castet <castet.matthieu@free.fr> + * Copyright (c) 2004 Li Shaohua <shaohua.li@intel.com> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2, or (at your option) any + * later version. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#include <linux/acpi.h> +#include <linux/pnp.h> +#include <acpi/acpi_bus.h> +#include "pnpacpi.h" + +static int num = 0; + +static char __initdata excluded_id_list[] = + "PNP0C0A," /* Battery */ + "PNP0C0C,PNP0C0E,PNP0C0D," /* Button */ + "PNP0C09," /* EC */ + "PNP0C0B," /* Fan */ + "PNP0A03," /* PCI root */ + "PNP0C0F," /* Link device */ + "PNP0000," /* PIC */ + "PNP0100," /* Timer */ + ; +static inline int is_exclusive_device(struct acpi_device *dev) +{ + return (!acpi_match_ids(dev, excluded_id_list)); +} + +void *pnpacpi_kmalloc(size_t size, int f) +{ + void *p = kmalloc(size, f); + if (p) + memset(p, 0, size); + return p; +} + +/* + * Compatible Device IDs + */ +#define TEST_HEX(c) \ + if (!(('0' <= (c) && (c) <= '9') || ('A' <= (c) && (c) <= 'F'))) \ + return 0 +#define TEST_ALPHA(c) \ + if (!('@' <= (c) || (c) <= 'Z')) \ + return 0 +static int __init ispnpidacpi(char *id) +{ + TEST_ALPHA(id[0]); + TEST_ALPHA(id[1]); + TEST_ALPHA(id[2]); + TEST_HEX(id[3]); + TEST_HEX(id[4]); + TEST_HEX(id[5]); + TEST_HEX(id[6]); + if (id[7] != '\0') + return 0; + return 1; +} + +static void __init pnpidacpi_to_pnpid(char *id, char *str) +{ + str[0] = id[0]; + str[1] = id[1]; + str[2] = id[2]; + str[3] = tolower(id[3]); + str[4] = tolower(id[4]); + str[5] = tolower(id[5]); + str[6] = tolower(id[6]); + str[7] = '\0'; +} + +static int pnpacpi_get_resources(struct pnp_dev * dev, struct pnp_resource_table * res) +{ + acpi_status status; + status = pnpacpi_parse_allocated_resource((acpi_handle)dev->data, + &dev->res); + return ACPI_FAILURE(status) ? -ENODEV : 0; +} + +static int pnpacpi_set_resources(struct pnp_dev * dev, struct pnp_resource_table * res) +{ + acpi_handle handle = dev->data; + struct acpi_buffer buffer; + int ret = 0; + acpi_status status; + + ret = pnpacpi_build_resource_template(handle, &buffer); + if (ret) + return ret; + ret = pnpacpi_encode_resources(res, &buffer); + if (ret) { + kfree(buffer.pointer); + return ret; + } + status = acpi_set_current_resources(handle, &buffer); + if (ACPI_FAILURE(status)) + ret = -EINVAL; + kfree(buffer.pointer); + return ret; +} + +static int pnpacpi_disable_resources(struct pnp_dev *dev) +{ + acpi_status status; + + /* acpi_unregister_gsi(pnp_irq(dev, 0)); */ + status = acpi_evaluate_object((acpi_handle)dev->data, + "_DIS", NULL, NULL); + return ACPI_FAILURE(status) ? -ENODEV : 0; +} + +struct pnp_protocol pnpacpi_protocol = { + .name = "Plug and Play ACPI", + .get = pnpacpi_get_resources, + .set = pnpacpi_set_resources, + .disable = pnpacpi_disable_resources, +}; + +static int __init pnpacpi_add_device(struct acpi_device *device) +{ + acpi_handle temp = NULL; + acpi_status status; + struct pnp_id *dev_id; + struct pnp_dev *dev; + + if (!ispnpidacpi(acpi_device_hid(device)) || + is_exclusive_device(device)) + return 0; + + pnp_dbg("ACPI device : hid %s", acpi_device_hid(device)); + dev = pnpacpi_kmalloc(sizeof(struct pnp_dev), GFP_KERNEL); + if (!dev) { + pnp_err("Out of memory"); + return -ENOMEM; + } + dev->data = device->handle; + /* .enabled means if the device can decode the resources */ + dev->active = device->status.enabled; + status = acpi_get_handle(device->handle, "_SRS", &temp); + if (ACPI_SUCCESS(status)) + dev->capabilities |= PNP_CONFIGURABLE; + dev->capabilities |= PNP_READ; + if (device->flags.dynamic_status) + dev->capabilities |= PNP_WRITE; + if (device->flags.removable) + dev->capabilities |= PNP_REMOVABLE; + status = acpi_get_handle(device->handle, "_DIS", &temp); + if (ACPI_SUCCESS(status)) + dev->capabilities |= PNP_DISABLE; + + dev->protocol = &pnpacpi_protocol; + + if (strlen(acpi_device_name(device))) + strncpy(dev->name, acpi_device_name(device), sizeof(dev->name)); + else + strncpy(dev->name, acpi_device_bid(device), sizeof(dev->name)); + + dev->number = num; + + /* set the initial values for the PnP device */ + dev_id = pnpacpi_kmalloc(sizeof(struct pnp_id), GFP_KERNEL); + if (!dev_id) + goto err; + pnpidacpi_to_pnpid(acpi_device_hid(device), dev_id->id); + pnp_add_id(dev_id, dev); + + if(dev->active) { + /* parse allocated resource */ + status = pnpacpi_parse_allocated_resource(device->handle, &dev->res); + if (ACPI_FAILURE(status) && (status != AE_NOT_FOUND)) { + pnp_err("PnPACPI: METHOD_NAME__CRS failure for %s", dev_id->id); + goto err1; + } + } + + if(dev->capabilities & PNP_CONFIGURABLE) { + status = pnpacpi_parse_resource_option_data(device->handle, + dev); + if (ACPI_FAILURE(status) && (status != AE_NOT_FOUND)) { + pnp_err("PnPACPI: METHOD_NAME__PRS failure for %s", dev_id->id); + goto err1; + } + } + + /* parse compatible ids */ + if (device->flags.compatible_ids) { + struct acpi_compatible_id_list *cid_list = device->pnp.cid_list; + int i; + + for (i = 0; i < cid_list->count; i++) { + if (!ispnpidacpi(cid_list->id[i].value)) + continue; + dev_id = pnpacpi_kmalloc(sizeof(struct pnp_id), + GFP_KERNEL); + if (!dev_id) + continue; + + pnpidacpi_to_pnpid(cid_list->id[i].value, dev_id->id); + pnp_add_id(dev_id, dev); + } + } + + /* clear out the damaged flags */ + if (!dev->active) + pnp_init_resource_table(&dev->res); + pnp_add_device(dev); + num ++; + + return AE_OK; +err1: + kfree(dev_id); +err: + kfree(dev); + return -EINVAL; +} + +static acpi_status __init pnpacpi_add_device_handler(acpi_handle handle, + u32 lvl, void *context, void **rv) +{ + struct acpi_device *device; + + if (!acpi_bus_get_device(handle, &device)) + pnpacpi_add_device(device); + else + return AE_CTRL_DEPTH; + return AE_OK; +} + +int pnpacpi_disabled __initdata; +int __init pnpacpi_init(void) +{ + if (acpi_disabled || pnpacpi_disabled) { + pnp_info("PnP ACPI: disabled"); + return 0; + } + pnp_info("PnP ACPI init"); + pnp_register_protocol(&pnpacpi_protocol); + acpi_get_devices(NULL, pnpacpi_add_device_handler, NULL, NULL); + pnp_info("PnP ACPI: found %d devices", num); + return 0; +} +subsys_initcall(pnpacpi_init); + +static int __init pnpacpi_setup(char *str) +{ + if (str == NULL) + return 1; + if (!strncmp(str, "off", 3)) + pnpacpi_disabled = 1; + return 1; +} +__setup("pnpacpi=", pnpacpi_setup); + +EXPORT_SYMBOL(pnpacpi_protocol); diff --git a/drivers/pnp/pnpacpi/pnpacpi.h b/drivers/pnp/pnpacpi/pnpacpi.h new file mode 100644 index 000000000000..76f907e09ee6 --- /dev/null +++ b/drivers/pnp/pnpacpi/pnpacpi.h @@ -0,0 +1,13 @@ +#ifndef ACPI_PNP_H +#define ACPI_PNP_H + +#include <acpi/acpi_bus.h> +#include <linux/acpi.h> +#include <linux/pnp.h> + +void *pnpacpi_kmalloc(size_t size, int f); +acpi_status pnpacpi_parse_allocated_resource(acpi_handle, struct pnp_resource_table*); +acpi_status pnpacpi_parse_resource_option_data(acpi_handle, struct pnp_dev*); +int pnpacpi_encode_resources(struct pnp_resource_table *, struct acpi_buffer *); +int pnpacpi_build_resource_template(acpi_handle, struct acpi_buffer*); +#endif diff --git a/drivers/pnp/pnpacpi/rsparser.c b/drivers/pnp/pnpacpi/rsparser.c new file mode 100644 index 000000000000..c0ddb1eb8c4d --- /dev/null +++ b/drivers/pnp/pnpacpi/rsparser.c @@ -0,0 +1,821 @@ +/* + * pnpacpi -- PnP ACPI driver + * + * Copyright (c) 2004 Matthieu Castet <castet.matthieu@free.fr> + * Copyright (c) 2004 Li Shaohua <shaohua.li@intel.com> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2, or (at your option) any + * later version. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ +#include <linux/kernel.h> +#include <linux/acpi.h> +#include <linux/pci.h> +#include "pnpacpi.h" + +#ifdef CONFIG_IA64 +#define valid_IRQ(i) (1) +#else +#define valid_IRQ(i) (((i) != 0) && ((i) != 2)) +#endif + +/* + * Allocated Resources + */ +static int irq_flags(int edge_level, int active_high_low) +{ + int flag; + if (edge_level == ACPI_LEVEL_SENSITIVE) { + if(active_high_low == ACPI_ACTIVE_LOW) + flag = IORESOURCE_IRQ_LOWLEVEL; + else + flag = IORESOURCE_IRQ_HIGHLEVEL; + } + else { + if(active_high_low == ACPI_ACTIVE_LOW) + flag = IORESOURCE_IRQ_LOWEDGE; + else + flag = IORESOURCE_IRQ_HIGHEDGE; + } + return flag; +} + +static void decode_irq_flags(int flag, int *edge_level, int *active_high_low) +{ + switch (flag) { + case IORESOURCE_IRQ_LOWLEVEL: + *edge_level = ACPI_LEVEL_SENSITIVE; + *active_high_low = ACPI_ACTIVE_LOW; + break; + case IORESOURCE_IRQ_HIGHLEVEL: + *edge_level = ACPI_LEVEL_SENSITIVE; + *active_high_low = ACPI_ACTIVE_HIGH; + break; + case IORESOURCE_IRQ_LOWEDGE: + *edge_level = ACPI_EDGE_SENSITIVE; + *active_high_low = ACPI_ACTIVE_LOW; + break; + case IORESOURCE_IRQ_HIGHEDGE: + *edge_level = ACPI_EDGE_SENSITIVE; + *active_high_low = ACPI_ACTIVE_HIGH; + break; + } +} + +static void +pnpacpi_parse_allocated_irqresource(struct pnp_resource_table * res, int irq) +{ + int i = 0; + while (!(res->irq_resource[i].flags & IORESOURCE_UNSET) && + i < PNP_MAX_IRQ) + i++; + if (i < PNP_MAX_IRQ) { + res->irq_resource[i].flags = IORESOURCE_IRQ; //Also clears _UNSET flag + if (irq == -1) { + res->irq_resource[i].flags |= IORESOURCE_DISABLED; + return; + } + res->irq_resource[i].start =(unsigned long) irq; + res->irq_resource[i].end = (unsigned long) irq; + } +} + +static void +pnpacpi_parse_allocated_dmaresource(struct pnp_resource_table * res, int dma) +{ + int i = 0; + while (!(res->dma_resource[i].flags & IORESOURCE_UNSET) && + i < PNP_MAX_DMA) + i++; + if (i < PNP_MAX_DMA) { + res->dma_resource[i].flags = IORESOURCE_DMA; // Also clears _UNSET flag + if (dma == -1) { + res->dma_resource[i].flags |= IORESOURCE_DISABLED; + return; + } + res->dma_resource[i].start =(unsigned long) dma; + res->dma_resource[i].end = (unsigned long) dma; + } +} + +static void +pnpacpi_parse_allocated_ioresource(struct pnp_resource_table * res, + int io, int len) +{ + int i = 0; + while (!(res->port_resource[i].flags & IORESOURCE_UNSET) && + i < PNP_MAX_PORT) + i++; + if (i < PNP_MAX_PORT) { + res->port_resource[i].flags = IORESOURCE_IO; // Also clears _UNSET flag + if (len <= 0 || (io + len -1) >= 0x10003) { + res->port_resource[i].flags |= IORESOURCE_DISABLED; + return; + } + res->port_resource[i].start = (unsigned long) io; + res->port_resource[i].end = (unsigned long)(io + len - 1); + } +} + +static void +pnpacpi_parse_allocated_memresource(struct pnp_resource_table * res, + int mem, int len) +{ + int i = 0; + while (!(res->mem_resource[i].flags & IORESOURCE_UNSET) && + (i < PNP_MAX_MEM)) + i++; + if (i < PNP_MAX_MEM) { + res->mem_resource[i].flags = IORESOURCE_MEM; // Also clears _UNSET flag + if (len <= 0) { + res->mem_resource[i].flags |= IORESOURCE_DISABLED; + return; + } + res->mem_resource[i].start = (unsigned long) mem; + res->mem_resource[i].end = (unsigned long)(mem + len - 1); + } +} + + +static acpi_status pnpacpi_allocated_resource(struct acpi_resource *res, + void *data) +{ + struct pnp_resource_table * res_table = (struct pnp_resource_table *)data; + + switch (res->id) { + case ACPI_RSTYPE_IRQ: + if ((res->data.irq.number_of_interrupts > 0) && + valid_IRQ(res->data.irq.interrupts[0])) { + pnpacpi_parse_allocated_irqresource(res_table, + acpi_register_gsi(res->data.irq.interrupts[0], + res->data.irq.edge_level, + res->data.irq.active_high_low)); + pcibios_penalize_isa_irq(res->data.irq.interrupts[0]); + } + break; + + case ACPI_RSTYPE_EXT_IRQ: + if ((res->data.extended_irq.number_of_interrupts > 0) && + valid_IRQ(res->data.extended_irq.interrupts[0])) { + pnpacpi_parse_allocated_irqresource(res_table, + acpi_register_gsi(res->data.extended_irq.interrupts[0], + res->data.extended_irq.edge_level, + res->data.extended_irq.active_high_low)); + pcibios_penalize_isa_irq(res->data.extended_irq.interrupts[0]); + } + break; + case ACPI_RSTYPE_DMA: + if (res->data.dma.number_of_channels > 0) + pnpacpi_parse_allocated_dmaresource(res_table, + res->data.dma.channels[0]); + break; + case ACPI_RSTYPE_IO: + pnpacpi_parse_allocated_ioresource(res_table, + res->data.io.min_base_address, + res->data.io.range_length); + break; + case ACPI_RSTYPE_FIXED_IO: + pnpacpi_parse_allocated_ioresource(res_table, + res->data.fixed_io.base_address, + res->data.fixed_io.range_length); + break; + case ACPI_RSTYPE_MEM24: + pnpacpi_parse_allocated_memresource(res_table, + res->data.memory24.min_base_address, + res->data.memory24.range_length); + break; + case ACPI_RSTYPE_MEM32: + pnpacpi_parse_allocated_memresource(res_table, + res->data.memory32.min_base_address, + res->data.memory32.range_length); + break; + case ACPI_RSTYPE_FIXED_MEM32: + pnpacpi_parse_allocated_memresource(res_table, + res->data.fixed_memory32.range_base_address, + res->data.fixed_memory32.range_length); + break; + case ACPI_RSTYPE_ADDRESS16: + pnpacpi_parse_allocated_memresource(res_table, + res->data.address16.min_address_range, + res->data.address16.address_length); + break; + case ACPI_RSTYPE_ADDRESS32: + pnpacpi_parse_allocated_memresource(res_table, + res->data.address32.min_address_range, + res->data.address32.address_length); + break; + case ACPI_RSTYPE_ADDRESS64: + pnpacpi_parse_allocated_memresource(res_table, + res->data.address64.min_address_range, + res->data.address64.address_length); + break; + case ACPI_RSTYPE_VENDOR: + break; + default: + pnp_warn("PnPACPI: unknown resource type %d", res->id); + return AE_ERROR; + } + + return AE_OK; +} + +acpi_status pnpacpi_parse_allocated_resource(acpi_handle handle, struct pnp_resource_table * res) +{ + /* Blank the resource table values */ + pnp_init_resource_table(res); + + return acpi_walk_resources(handle, METHOD_NAME__CRS, pnpacpi_allocated_resource, res); +} + +static void pnpacpi_parse_dma_option(struct pnp_option *option, struct acpi_resource_dma *p) +{ + int i; + struct pnp_dma * dma; + + if (p->number_of_channels == 0) + return; + dma = pnpacpi_kmalloc(sizeof(struct pnp_dma), GFP_KERNEL); + if (!dma) + return; + + for(i = 0; i < p->number_of_channels; i++) + dma->map |= 1 << p->channels[i]; + dma->flags = 0; + if (p->bus_master) + dma->flags |= IORESOURCE_DMA_MASTER; + switch (p->type) { + case ACPI_COMPATIBILITY: + dma->flags |= IORESOURCE_DMA_COMPATIBLE; + break; + case ACPI_TYPE_A: + dma->flags |= IORESOURCE_DMA_TYPEA; + break; + case ACPI_TYPE_B: + dma->flags |= IORESOURCE_DMA_TYPEB; + break; + case ACPI_TYPE_F: + dma->flags |= IORESOURCE_DMA_TYPEF; + break; + default: + /* Set a default value ? */ + dma->flags |= IORESOURCE_DMA_COMPATIBLE; + pnp_err("Invalid DMA type"); + } + switch (p->transfer) { + case ACPI_TRANSFER_8: + dma->flags |= IORESOURCE_DMA_8BIT; + break; + case ACPI_TRANSFER_8_16: + dma->flags |= IORESOURCE_DMA_8AND16BIT; + break; + case ACPI_TRANSFER_16: + dma->flags |= IORESOURCE_DMA_16BIT; + break; + default: + /* Set a default value ? */ + dma->flags |= IORESOURCE_DMA_8AND16BIT; + pnp_err("Invalid DMA transfer type"); + } + + pnp_register_dma_resource(option,dma); + return; +} + + +static void pnpacpi_parse_irq_option(struct pnp_option *option, + struct acpi_resource_irq *p) +{ + int i; + struct pnp_irq * irq; + + if (p->number_of_interrupts == 0) + return; + irq = pnpacpi_kmalloc(sizeof(struct pnp_irq), GFP_KERNEL); + if (!irq) + return; + + for(i = 0; i < p->number_of_interrupts; i++) + if (p->interrupts[i]) + __set_bit(p->interrupts[i], irq->map); + irq->flags = irq_flags(p->edge_level, p->active_high_low); + + pnp_register_irq_resource(option, irq); + return; +} + +static void pnpacpi_parse_ext_irq_option(struct pnp_option *option, + struct acpi_resource_ext_irq *p) +{ + int i; + struct pnp_irq * irq; + + if (p->number_of_interrupts == 0) + return; + irq = pnpacpi_kmalloc(sizeof(struct pnp_irq), GFP_KERNEL); + if (!irq) + return; + + for(i = 0; i < p->number_of_interrupts; i++) + if (p->interrupts[i]) + __set_bit(p->interrupts[i], irq->map); + irq->flags = irq_flags(p->edge_level, p->active_high_low); + + pnp_register_irq_resource(option, irq); + return; +} + +static void +pnpacpi_parse_port_option(struct pnp_option *option, + struct acpi_resource_io *io) +{ + struct pnp_port * port; + + if (io->range_length == 0) + return; + port = pnpacpi_kmalloc(sizeof(struct pnp_port), GFP_KERNEL); + if (!port) + return; + port->min = io->min_base_address; + port->max = io->max_base_address; + port->align = io->alignment; + port->size = io->range_length; + port->flags = ACPI_DECODE_16 == io->io_decode ? + PNP_PORT_FLAG_16BITADDR : 0; + pnp_register_port_resource(option,port); + return; +} + +static void +pnpacpi_parse_fixed_port_option(struct pnp_option *option, + struct acpi_resource_fixed_io *io) +{ + struct pnp_port * port; + + if (io->range_length == 0) + return; + port = pnpacpi_kmalloc(sizeof(struct pnp_port), GFP_KERNEL); + if (!port) + return; + port->min = port->max = io->base_address; + port->size = io->range_length; + port->align = 0; + port->flags = PNP_PORT_FLAG_FIXED; + pnp_register_port_resource(option,port); + return; +} + +static void +pnpacpi_parse_mem24_option(struct pnp_option *option, + struct acpi_resource_mem24 *p) +{ + struct pnp_mem * mem; + + if (p->range_length == 0) + return; + mem = pnpacpi_kmalloc(sizeof(struct pnp_mem), GFP_KERNEL); + if (!mem) + return; + mem->min = p->min_base_address; + mem->max = p->max_base_address; + mem->align = p->alignment; + mem->size = p->range_length; + + mem->flags = (ACPI_READ_WRITE_MEMORY == p->read_write_attribute) ? + IORESOURCE_MEM_WRITEABLE : 0; + + pnp_register_mem_resource(option,mem); + return; +} + +static void +pnpacpi_parse_mem32_option(struct pnp_option *option, + struct acpi_resource_mem32 *p) +{ + struct pnp_mem * mem; + + if (p->range_length == 0) + return; + mem = pnpacpi_kmalloc(sizeof(struct pnp_mem), GFP_KERNEL); + if (!mem) + return; + mem->min = p->min_base_address; + mem->max = p->max_base_address; + mem->align = p->alignment; + mem->size = p->range_length; + + mem->flags = (ACPI_READ_WRITE_MEMORY == p->read_write_attribute) ? + IORESOURCE_MEM_WRITEABLE : 0; + + pnp_register_mem_resource(option,mem); + return; +} + +static void +pnpacpi_parse_fixed_mem32_option(struct pnp_option *option, + struct acpi_resource_fixed_mem32 *p) +{ + struct pnp_mem * mem; + + if (p->range_length == 0) + return; + mem = pnpacpi_kmalloc(sizeof(struct pnp_mem), GFP_KERNEL); + if (!mem) + return; + mem->min = mem->max = p->range_base_address; + mem->size = p->range_length; + mem->align = 0; + + mem->flags = (ACPI_READ_WRITE_MEMORY == p->read_write_attribute) ? + IORESOURCE_MEM_WRITEABLE : 0; + + pnp_register_mem_resource(option,mem); + return; +} + +struct acpipnp_parse_option_s { + struct pnp_option *option; + struct pnp_dev *dev; +}; + +static acpi_status pnpacpi_option_resource(struct acpi_resource *res, + void *data) +{ + int priority = 0; + struct acpipnp_parse_option_s *parse_data = (struct acpipnp_parse_option_s *)data; + struct pnp_dev *dev = parse_data->dev; + struct pnp_option *option = parse_data->option; + + switch (res->id) { + case ACPI_RSTYPE_IRQ: + pnpacpi_parse_irq_option(option, &res->data.irq); + break; + case ACPI_RSTYPE_EXT_IRQ: + pnpacpi_parse_ext_irq_option(option, + &res->data.extended_irq); + break; + case ACPI_RSTYPE_DMA: + pnpacpi_parse_dma_option(option, &res->data.dma); + break; + case ACPI_RSTYPE_IO: + pnpacpi_parse_port_option(option, &res->data.io); + break; + case ACPI_RSTYPE_FIXED_IO: + pnpacpi_parse_fixed_port_option(option, + &res->data.fixed_io); + break; + case ACPI_RSTYPE_MEM24: + pnpacpi_parse_mem24_option(option, &res->data.memory24); + break; + case ACPI_RSTYPE_MEM32: + pnpacpi_parse_mem32_option(option, &res->data.memory32); + break; + case ACPI_RSTYPE_FIXED_MEM32: + pnpacpi_parse_fixed_mem32_option(option, + &res->data.fixed_memory32); + break; + case ACPI_RSTYPE_START_DPF: + switch (res->data.start_dpf.compatibility_priority) { + case ACPI_GOOD_CONFIGURATION: + priority = PNP_RES_PRIORITY_PREFERRED; + break; + + case ACPI_ACCEPTABLE_CONFIGURATION: + priority = PNP_RES_PRIORITY_ACCEPTABLE; + break; + + case ACPI_SUB_OPTIMAL_CONFIGURATION: + priority = PNP_RES_PRIORITY_FUNCTIONAL; + break; + default: + priority = PNP_RES_PRIORITY_INVALID; + break; + } + /* TBD: Considering performace/robustness bits */ + option = pnp_register_dependent_option(dev, priority); + if (!option) + return AE_ERROR; + parse_data->option = option; + break; + case ACPI_RSTYPE_END_DPF: + return AE_CTRL_TERMINATE; + default: + pnp_warn("PnPACPI: unknown resource type %d", res->id); + return AE_ERROR; + } + + return AE_OK; +} + +acpi_status pnpacpi_parse_resource_option_data(acpi_handle handle, + struct pnp_dev *dev) +{ + acpi_status status; + struct acpipnp_parse_option_s parse_data; + + parse_data.option = pnp_register_independent_option(dev); + if (!parse_data.option) + return AE_ERROR; + parse_data.dev = dev; + status = acpi_walk_resources(handle, METHOD_NAME__PRS, + pnpacpi_option_resource, &parse_data); + + return status; +} + +/* + * Set resource + */ +static acpi_status pnpacpi_count_resources(struct acpi_resource *res, + void *data) +{ + int *res_cnt = (int *)data; + switch (res->id) { + case ACPI_RSTYPE_IRQ: + case ACPI_RSTYPE_EXT_IRQ: + case ACPI_RSTYPE_DMA: + case ACPI_RSTYPE_IO: + case ACPI_RSTYPE_FIXED_IO: + case ACPI_RSTYPE_MEM24: + case ACPI_RSTYPE_MEM32: + case ACPI_RSTYPE_FIXED_MEM32: +#if 0 + case ACPI_RSTYPE_ADDRESS16: + case ACPI_RSTYPE_ADDRESS32: + case ACPI_RSTYPE_ADDRESS64: +#endif + (*res_cnt) ++; + default: + return AE_OK; + } + return AE_OK; +} + +static acpi_status pnpacpi_type_resources(struct acpi_resource *res, + void *data) +{ + struct acpi_resource **resource = (struct acpi_resource **)data; + switch (res->id) { + case ACPI_RSTYPE_IRQ: + case ACPI_RSTYPE_EXT_IRQ: + case ACPI_RSTYPE_DMA: + case ACPI_RSTYPE_IO: + case ACPI_RSTYPE_FIXED_IO: + case ACPI_RSTYPE_MEM24: + case ACPI_RSTYPE_MEM32: + case ACPI_RSTYPE_FIXED_MEM32: +#if 0 + case ACPI_RSTYPE_ADDRESS16: + case ACPI_RSTYPE_ADDRESS32: + case ACPI_RSTYPE_ADDRESS64: +#endif + (*resource)->id = res->id; + (*resource)++; + default: + return AE_OK; + } + + return AE_OK; +} + +int pnpacpi_build_resource_template(acpi_handle handle, + struct acpi_buffer *buffer) +{ + struct acpi_resource *resource; + int res_cnt = 0; + acpi_status status; + + status = acpi_walk_resources(handle, METHOD_NAME__CRS, + pnpacpi_count_resources, &res_cnt); + if (ACPI_FAILURE(status)) { + pnp_err("Evaluate _CRS failed"); + return -EINVAL; + } + if (!res_cnt) + return -EINVAL; + buffer->length = sizeof(struct acpi_resource) * (res_cnt + 1) + 1; + buffer->pointer = pnpacpi_kmalloc(buffer->length - 1, GFP_KERNEL); + if (!buffer->pointer) + return -ENOMEM; + pnp_dbg("Res cnt %d", res_cnt); + resource = (struct acpi_resource *)buffer->pointer; + status = acpi_walk_resources(handle, METHOD_NAME__CRS, + pnpacpi_type_resources, &resource); + if (ACPI_FAILURE(status)) { + kfree(buffer->pointer); + pnp_err("Evaluate _CRS failed"); + return -EINVAL; + } + /* resource will pointer the end resource now */ + resource->id = ACPI_RSTYPE_END_TAG; + + return 0; +} + +static void pnpacpi_encode_irq(struct acpi_resource *resource, + struct resource *p) +{ + int edge_level, active_high_low; + + decode_irq_flags(p->flags & IORESOURCE_BITS, &edge_level, + &active_high_low); + resource->id = ACPI_RSTYPE_IRQ; + resource->length = sizeof(struct acpi_resource); + resource->data.irq.edge_level = edge_level; + resource->data.irq.active_high_low = active_high_low; + if (edge_level == ACPI_EDGE_SENSITIVE) + resource->data.irq.shared_exclusive = ACPI_EXCLUSIVE; + else + resource->data.irq.shared_exclusive = ACPI_SHARED; + resource->data.irq.number_of_interrupts = 1; + resource->data.irq.interrupts[0] = p->start; +} + +static void pnpacpi_encode_ext_irq(struct acpi_resource *resource, + struct resource *p) +{ + int edge_level, active_high_low; + + decode_irq_flags(p->flags & IORESOURCE_BITS, &edge_level, + &active_high_low); + resource->id = ACPI_RSTYPE_EXT_IRQ; + resource->length = sizeof(struct acpi_resource); + resource->data.extended_irq.producer_consumer = ACPI_CONSUMER; + resource->data.extended_irq.edge_level = edge_level; + resource->data.extended_irq.active_high_low = active_high_low; + if (edge_level == ACPI_EDGE_SENSITIVE) + resource->data.irq.shared_exclusive = ACPI_EXCLUSIVE; + else + resource->data.irq.shared_exclusive = ACPI_SHARED; + resource->data.extended_irq.number_of_interrupts = 1; + resource->data.extended_irq.interrupts[0] = p->start; +} + +static void pnpacpi_encode_dma(struct acpi_resource *resource, + struct resource *p) +{ + resource->id = ACPI_RSTYPE_DMA; + resource->length = sizeof(struct acpi_resource); + /* Note: pnp_assign_dma will copy pnp_dma->flags into p->flags */ + if (p->flags & IORESOURCE_DMA_COMPATIBLE) + resource->data.dma.type = ACPI_COMPATIBILITY; + else if (p->flags & IORESOURCE_DMA_TYPEA) + resource->data.dma.type = ACPI_TYPE_A; + else if (p->flags & IORESOURCE_DMA_TYPEB) + resource->data.dma.type = ACPI_TYPE_B; + else if (p->flags & IORESOURCE_DMA_TYPEF) + resource->data.dma.type = ACPI_TYPE_F; + if (p->flags & IORESOURCE_DMA_8BIT) + resource->data.dma.transfer = ACPI_TRANSFER_8; + else if (p->flags & IORESOURCE_DMA_8AND16BIT) + resource->data.dma.transfer = ACPI_TRANSFER_8_16; + else if (p->flags & IORESOURCE_DMA_16BIT) + resource->data.dma.transfer = ACPI_TRANSFER_16; + resource->data.dma.bus_master = p->flags & IORESOURCE_DMA_MASTER; + resource->data.dma.number_of_channels = 1; + resource->data.dma.channels[0] = p->start; +} + +static void pnpacpi_encode_io(struct acpi_resource *resource, + struct resource *p) +{ + resource->id = ACPI_RSTYPE_IO; + resource->length = sizeof(struct acpi_resource); + /* Note: pnp_assign_port will copy pnp_port->flags into p->flags */ + resource->data.io.io_decode = (p->flags & PNP_PORT_FLAG_16BITADDR)? + ACPI_DECODE_16 : ACPI_DECODE_10; + resource->data.io.min_base_address = p->start; + resource->data.io.max_base_address = p->end; + resource->data.io.alignment = 0; /* Correct? */ + resource->data.io.range_length = p->end - p->start + 1; +} + +static void pnpacpi_encode_fixed_io(struct acpi_resource *resource, + struct resource *p) +{ + resource->id = ACPI_RSTYPE_FIXED_IO; + resource->length = sizeof(struct acpi_resource); + resource->data.fixed_io.base_address = p->start; + resource->data.fixed_io.range_length = p->end - p->start + 1; +} + +static void pnpacpi_encode_mem24(struct acpi_resource *resource, + struct resource *p) +{ + resource->id = ACPI_RSTYPE_MEM24; + resource->length = sizeof(struct acpi_resource); + /* Note: pnp_assign_mem will copy pnp_mem->flags into p->flags */ + resource->data.memory24.read_write_attribute = + (p->flags & IORESOURCE_MEM_WRITEABLE) ? + ACPI_READ_WRITE_MEMORY : ACPI_READ_ONLY_MEMORY; + resource->data.memory24.min_base_address = p->start; + resource->data.memory24.max_base_address = p->end; + resource->data.memory24.alignment = 0; + resource->data.memory24.range_length = p->end - p->start + 1; +} + +static void pnpacpi_encode_mem32(struct acpi_resource *resource, + struct resource *p) +{ + resource->id = ACPI_RSTYPE_MEM32; + resource->length = sizeof(struct acpi_resource); + resource->data.memory32.read_write_attribute = + (p->flags & IORESOURCE_MEM_WRITEABLE) ? + ACPI_READ_WRITE_MEMORY : ACPI_READ_ONLY_MEMORY; + resource->data.memory32.min_base_address = p->start; + resource->data.memory32.max_base_address = p->end; + resource->data.memory32.alignment = 0; + resource->data.memory32.range_length = p->end - p->start + 1; +} + +static void pnpacpi_encode_fixed_mem32(struct acpi_resource *resource, + struct resource *p) +{ + resource->id = ACPI_RSTYPE_FIXED_MEM32; + resource->length = sizeof(struct acpi_resource); + resource->data.fixed_memory32.read_write_attribute = + (p->flags & IORESOURCE_MEM_WRITEABLE) ? + ACPI_READ_WRITE_MEMORY : ACPI_READ_ONLY_MEMORY; + resource->data.fixed_memory32.range_base_address = p->start; + resource->data.fixed_memory32.range_length = p->end - p->start + 1; +} + +int pnpacpi_encode_resources(struct pnp_resource_table *res_table, + struct acpi_buffer *buffer) +{ + int i = 0; + /* pnpacpi_build_resource_template allocates extra mem */ + int res_cnt = (buffer->length - 1)/sizeof(struct acpi_resource) - 1; + struct acpi_resource *resource = (struct acpi_resource*)buffer->pointer; + int port = 0, irq = 0, dma = 0, mem = 0; + + pnp_dbg("res cnt %d", res_cnt); + while (i < res_cnt) { + switch(resource->id) { + case ACPI_RSTYPE_IRQ: + pnp_dbg("Encode irq"); + pnpacpi_encode_irq(resource, + &res_table->irq_resource[irq]); + irq++; + break; + + case ACPI_RSTYPE_EXT_IRQ: + pnp_dbg("Encode ext irq"); + pnpacpi_encode_ext_irq(resource, + &res_table->irq_resource[irq]); + irq++; + break; + case ACPI_RSTYPE_DMA: + pnp_dbg("Encode dma"); + pnpacpi_encode_dma(resource, + &res_table->dma_resource[dma]); + dma ++; + break; + case ACPI_RSTYPE_IO: + pnp_dbg("Encode io"); + pnpacpi_encode_io(resource, + &res_table->port_resource[port]); + port ++; + break; + case ACPI_RSTYPE_FIXED_IO: + pnp_dbg("Encode fixed io"); + pnpacpi_encode_fixed_io(resource, + &res_table->port_resource[port]); + port ++; + break; + case ACPI_RSTYPE_MEM24: + pnp_dbg("Encode mem24"); + pnpacpi_encode_mem24(resource, + &res_table->mem_resource[mem]); + mem ++; + break; + case ACPI_RSTYPE_MEM32: + pnp_dbg("Encode mem32"); + pnpacpi_encode_mem32(resource, + &res_table->mem_resource[mem]); + mem ++; + break; + case ACPI_RSTYPE_FIXED_MEM32: + pnp_dbg("Encode fixed mem32"); + pnpacpi_encode_fixed_mem32(resource, + &res_table->mem_resource[mem]); + mem ++; + break; + default: /* other type */ + pnp_warn("unknown resource type %d", resource->id); + return -EINVAL; + } + resource ++; + i ++; + } + return 0; +} diff --git a/drivers/pnp/pnpbios/Kconfig b/drivers/pnp/pnpbios/Kconfig new file mode 100644 index 000000000000..fab848cae89d --- /dev/null +++ b/drivers/pnp/pnpbios/Kconfig @@ -0,0 +1,42 @@ +# +# Plug and Play BIOS configuration +# +config PNPBIOS + bool "Plug and Play BIOS support (EXPERIMENTAL)" + depends on PNP && ISA && X86 && EXPERIMENTAL + default n + ---help--- + Linux uses the PNPBIOS as defined in "Plug and Play BIOS + Specification Version 1.0A May 5, 1994" to autodetect built-in + mainboard resources (e.g. parallel port resources). + + Some features (e.g. event notification, docking station information, + ISAPNP services) are not currently implemented. + + If you would like the kernel to detect and allocate resources to + your mainboard devices (on some systems they are disabled by the + BIOS) say Y here. Also the PNPBIOS can help prevent resource + conflicts between mainboard devices and other bus devices. + + Note: ACPI is expected to supersede PNPBIOS some day, currently it + co-exists nicely. If you have a non-ISA system that supports ACPI, + you probably don't need PNPBIOS support. + +config PNPBIOS_PROC_FS + bool "Plug and Play BIOS /proc interface" + depends on PNPBIOS && PROC_FS + ---help--- + If you say Y here and to "/proc file system support", you will be + able to directly access the PNPBIOS. This includes resource + allocation, ESCD, and other PNPBIOS services. Using this + interface is potentially dangerous because the PNPBIOS driver will + not be notified of any resource changes made by writing directly. + Also some buggy systems will fault when accessing certain features + in the PNPBIOS /proc interface (e.g. "boot" configs). + + See the latest pcmcia-cs (stand-alone package) for a nice set of + PNPBIOS /proc interface tools (lspnp and setpnp). + + Unless you are debugging or have other specific reasons, it is + recommended that you say N here. + diff --git a/drivers/pnp/pnpbios/Makefile b/drivers/pnp/pnpbios/Makefile new file mode 100644 index 000000000000..3cd3ed760605 --- /dev/null +++ b/drivers/pnp/pnpbios/Makefile @@ -0,0 +1,7 @@ +# +# Makefile for the kernel PNPBIOS driver. +# + +pnpbios-proc-$(CONFIG_PNPBIOS_PROC_FS) = proc.o + +obj-y := core.o bioscalls.o rsparser.o $(pnpbios-proc-y) diff --git a/drivers/pnp/pnpbios/bioscalls.c b/drivers/pnp/pnpbios/bioscalls.c new file mode 100644 index 000000000000..6b7583f497d0 --- /dev/null +++ b/drivers/pnp/pnpbios/bioscalls.c @@ -0,0 +1,544 @@ +/* + * bioscalls.c - the lowlevel layer of the PnPBIOS driver + * + */ + +#include <linux/types.h> +#include <linux/module.h> +#include <linux/init.h> +#include <linux/linkage.h> +#include <linux/kernel.h> +#include <linux/pnpbios.h> +#include <linux/device.h> +#include <linux/pnp.h> +#include <linux/mm.h> +#include <linux/smp.h> +#include <linux/slab.h> +#include <linux/kmod.h> +#include <linux/completion.h> +#include <linux/spinlock.h> + +#include <asm/page.h> +#include <asm/desc.h> +#include <asm/system.h> +#include <asm/byteorder.h> + +#include "pnpbios.h" + +static struct { + u16 offset; + u16 segment; +} pnp_bios_callpoint; + + +/* The PnP BIOS entries in the GDT */ +#define PNP_GDT (GDT_ENTRY_PNPBIOS_BASE * 8) + +#define PNP_CS32 (PNP_GDT+0x00) /* segment for calling fn */ +#define PNP_CS16 (PNP_GDT+0x08) /* code segment for BIOS */ +#define PNP_DS (PNP_GDT+0x10) /* data segment for BIOS */ +#define PNP_TS1 (PNP_GDT+0x18) /* transfer data segment */ +#define PNP_TS2 (PNP_GDT+0x20) /* another data segment */ + +/* + * These are some opcodes for a "static asmlinkage" + * As this code is *not* executed inside the linux kernel segment, but in a + * alias at offset 0, we need a far return that can not be compiled by + * default (please, prove me wrong! this is *really* ugly!) + * This is the only way to get the bios to return into the kernel code, + * because the bios code runs in 16 bit protected mode and therefore can only + * return to the caller if the call is within the first 64kB, and the linux + * kernel begins at offset 3GB... + */ + +asmlinkage void pnp_bios_callfunc(void); + +__asm__( + ".text \n" + __ALIGN_STR "\n" + "pnp_bios_callfunc:\n" + " pushl %edx \n" + " pushl %ecx \n" + " pushl %ebx \n" + " pushl %eax \n" + " lcallw *pnp_bios_callpoint\n" + " addl $16, %esp \n" + " lret \n" + ".previous \n" +); + +#define Q_SET_SEL(cpu, selname, address, size) \ +do { \ +set_base(per_cpu(cpu_gdt_table,cpu)[(selname) >> 3], __va((u32)(address))); \ +set_limit(per_cpu(cpu_gdt_table,cpu)[(selname) >> 3], size); \ +} while(0) + +#define Q2_SET_SEL(cpu, selname, address, size) \ +do { \ +set_base(per_cpu(cpu_gdt_table,cpu)[(selname) >> 3], (u32)(address)); \ +set_limit(per_cpu(cpu_gdt_table,cpu)[(selname) >> 3], size); \ +} while(0) + +static struct desc_struct bad_bios_desc = { 0, 0x00409200 }; + +/* + * At some point we want to use this stack frame pointer to unwind + * after PnP BIOS oopses. + */ + +u32 pnp_bios_fault_esp; +u32 pnp_bios_fault_eip; +u32 pnp_bios_is_utter_crap = 0; + +static spinlock_t pnp_bios_lock; + + +/* + * Support Functions + */ + +static inline u16 call_pnp_bios(u16 func, u16 arg1, u16 arg2, u16 arg3, + u16 arg4, u16 arg5, u16 arg6, u16 arg7, + void *ts1_base, u32 ts1_size, + void *ts2_base, u32 ts2_size) +{ + unsigned long flags; + u16 status; + struct desc_struct save_desc_40; + int cpu; + + /* + * PnP BIOSes are generally not terribly re-entrant. + * Also, don't rely on them to save everything correctly. + */ + if(pnp_bios_is_utter_crap) + return PNP_FUNCTION_NOT_SUPPORTED; + + cpu = get_cpu(); + save_desc_40 = per_cpu(cpu_gdt_table,cpu)[0x40 / 8]; + per_cpu(cpu_gdt_table,cpu)[0x40 / 8] = bad_bios_desc; + + /* On some boxes IRQ's during PnP BIOS calls are deadly. */ + spin_lock_irqsave(&pnp_bios_lock, flags); + + /* The lock prevents us bouncing CPU here */ + if (ts1_size) + Q2_SET_SEL(smp_processor_id(), PNP_TS1, ts1_base, ts1_size); + if (ts2_size) + Q2_SET_SEL(smp_processor_id(), PNP_TS2, ts2_base, ts2_size); + + __asm__ __volatile__( + "pushl %%ebp\n\t" + "pushl %%edi\n\t" + "pushl %%esi\n\t" + "pushl %%ds\n\t" + "pushl %%es\n\t" + "pushl %%fs\n\t" + "pushl %%gs\n\t" + "pushfl\n\t" + "movl %%esp, pnp_bios_fault_esp\n\t" + "movl $1f, pnp_bios_fault_eip\n\t" + "lcall %5,%6\n\t" + "1:popfl\n\t" + "popl %%gs\n\t" + "popl %%fs\n\t" + "popl %%es\n\t" + "popl %%ds\n\t" + "popl %%esi\n\t" + "popl %%edi\n\t" + "popl %%ebp\n\t" + : "=a" (status) + : "0" ((func) | (((u32)arg1) << 16)), + "b" ((arg2) | (((u32)arg3) << 16)), + "c" ((arg4) | (((u32)arg5) << 16)), + "d" ((arg6) | (((u32)arg7) << 16)), + "i" (PNP_CS32), + "i" (0) + : "memory" + ); + spin_unlock_irqrestore(&pnp_bios_lock, flags); + + per_cpu(cpu_gdt_table,cpu)[0x40 / 8] = save_desc_40; + put_cpu(); + + /* If we get here and this is set then the PnP BIOS faulted on us. */ + if(pnp_bios_is_utter_crap) + { + printk(KERN_ERR "PnPBIOS: Warning! Your PnP BIOS caused a fatal error. Attempting to continue\n"); + printk(KERN_ERR "PnPBIOS: You may need to reboot with the \"pnpbios=off\" option to operate stably\n"); + printk(KERN_ERR "PnPBIOS: Check with your vendor for an updated BIOS\n"); + } + + return status; +} + +void pnpbios_print_status(const char * module, u16 status) +{ + switch(status) { + case PNP_SUCCESS: + printk(KERN_ERR "PnPBIOS: %s: function successful\n", module); + break; + case PNP_NOT_SET_STATICALLY: + printk(KERN_ERR "PnPBIOS: %s: unable to set static resources\n", module); + break; + case PNP_UNKNOWN_FUNCTION: + printk(KERN_ERR "PnPBIOS: %s: invalid function number passed\n", module); + break; + case PNP_FUNCTION_NOT_SUPPORTED: + printk(KERN_ERR "PnPBIOS: %s: function not supported on this system\n", module); + break; + case PNP_INVALID_HANDLE: + printk(KERN_ERR "PnPBIOS: %s: invalid handle\n", module); + break; + case PNP_BAD_PARAMETER: + printk(KERN_ERR "PnPBIOS: %s: invalid parameters were passed\n", module); + break; + case PNP_SET_FAILED: + printk(KERN_ERR "PnPBIOS: %s: unable to set resources\n", module); + break; + case PNP_EVENTS_NOT_PENDING: + printk(KERN_ERR "PnPBIOS: %s: no events are pending\n", module); + break; + case PNP_SYSTEM_NOT_DOCKED: + printk(KERN_ERR "PnPBIOS: %s: the system is not docked\n", module); + break; + case PNP_NO_ISA_PNP_CARDS: + printk(KERN_ERR "PnPBIOS: %s: no isapnp cards are installed on this system\n", module); + break; + case PNP_UNABLE_TO_DETERMINE_DOCK_CAPABILITIES: + printk(KERN_ERR "PnPBIOS: %s: cannot determine the capabilities of the docking station\n", module); + break; + case PNP_CONFIG_CHANGE_FAILED_NO_BATTERY: + printk(KERN_ERR "PnPBIOS: %s: unable to undock, the system does not have a battery\n", module); + break; + case PNP_CONFIG_CHANGE_FAILED_RESOURCE_CONFLICT: + printk(KERN_ERR "PnPBIOS: %s: could not dock due to resource conflicts\n", module); + break; + case PNP_BUFFER_TOO_SMALL: + printk(KERN_ERR "PnPBIOS: %s: the buffer passed is too small\n", module); + break; + case PNP_USE_ESCD_SUPPORT: + printk(KERN_ERR "PnPBIOS: %s: use ESCD instead\n", module); + break; + case PNP_MESSAGE_NOT_SUPPORTED: + printk(KERN_ERR "PnPBIOS: %s: the message is unsupported\n", module); + break; + case PNP_HARDWARE_ERROR: + printk(KERN_ERR "PnPBIOS: %s: a hardware failure has occured\n", module); + break; + default: + printk(KERN_ERR "PnPBIOS: %s: unexpected status 0x%x\n", module, status); + break; + } +} + + +/* + * PnP BIOS Low Level Calls + */ + +#define PNP_GET_NUM_SYS_DEV_NODES 0x00 +#define PNP_GET_SYS_DEV_NODE 0x01 +#define PNP_SET_SYS_DEV_NODE 0x02 +#define PNP_GET_EVENT 0x03 +#define PNP_SEND_MESSAGE 0x04 +#define PNP_GET_DOCKING_STATION_INFORMATION 0x05 +#define PNP_SET_STATIC_ALLOCED_RES_INFO 0x09 +#define PNP_GET_STATIC_ALLOCED_RES_INFO 0x0a +#define PNP_GET_APM_ID_TABLE 0x0b +#define PNP_GET_PNP_ISA_CONFIG_STRUC 0x40 +#define PNP_GET_ESCD_INFO 0x41 +#define PNP_READ_ESCD 0x42 +#define PNP_WRITE_ESCD 0x43 + +/* + * Call PnP BIOS with function 0x00, "get number of system device nodes" + */ +static int __pnp_bios_dev_node_info(struct pnp_dev_node_info *data) +{ + u16 status; + if (!pnp_bios_present()) + return PNP_FUNCTION_NOT_SUPPORTED; + status = call_pnp_bios(PNP_GET_NUM_SYS_DEV_NODES, 0, PNP_TS1, 2, PNP_TS1, PNP_DS, 0, 0, + data, sizeof(struct pnp_dev_node_info), NULL, 0); + data->no_nodes &= 0xff; + return status; +} + +int pnp_bios_dev_node_info(struct pnp_dev_node_info *data) +{ + int status = __pnp_bios_dev_node_info( data ); + if ( status ) + pnpbios_print_status( "dev_node_info", status ); + return status; +} + +/* + * Note that some PnP BIOSes (e.g., on Sony Vaio laptops) die a horrible + * death if they are asked to access the "current" configuration. + * Therefore, if it's a matter of indifference, it's better to call + * get_dev_node() and set_dev_node() with boot=1 rather than with boot=0. + */ + +/* + * Call PnP BIOS with function 0x01, "get system device node" + * Input: *nodenum = desired node, + * boot = whether to get nonvolatile boot (!=0) + * or volatile current (0) config + * Output: *nodenum=next node or 0xff if no more nodes + */ +static int __pnp_bios_get_dev_node(u8 *nodenum, char boot, struct pnp_bios_node *data) +{ + u16 status; + if (!pnp_bios_present()) + return PNP_FUNCTION_NOT_SUPPORTED; + if ( !boot && pnpbios_dont_use_current_config ) + return PNP_FUNCTION_NOT_SUPPORTED; + status = call_pnp_bios(PNP_GET_SYS_DEV_NODE, 0, PNP_TS1, 0, PNP_TS2, boot ? 2 : 1, PNP_DS, 0, + nodenum, sizeof(char), data, 65536); + return status; +} + +int pnp_bios_get_dev_node(u8 *nodenum, char boot, struct pnp_bios_node *data) +{ + int status; + status = __pnp_bios_get_dev_node( nodenum, boot, data ); + if ( status ) + pnpbios_print_status( "get_dev_node", status ); + return status; +} + + +/* + * Call PnP BIOS with function 0x02, "set system device node" + * Input: *nodenum = desired node, + * boot = whether to set nonvolatile boot (!=0) + * or volatile current (0) config + */ +static int __pnp_bios_set_dev_node(u8 nodenum, char boot, struct pnp_bios_node *data) +{ + u16 status; + if (!pnp_bios_present()) + return PNP_FUNCTION_NOT_SUPPORTED; + if ( !boot && pnpbios_dont_use_current_config ) + return PNP_FUNCTION_NOT_SUPPORTED; + status = call_pnp_bios(PNP_SET_SYS_DEV_NODE, nodenum, 0, PNP_TS1, boot ? 2 : 1, PNP_DS, 0, 0, + data, 65536, NULL, 0); + return status; +} + +int pnp_bios_set_dev_node(u8 nodenum, char boot, struct pnp_bios_node *data) +{ + int status; + status = __pnp_bios_set_dev_node( nodenum, boot, data ); + if ( status ) { + pnpbios_print_status( "set_dev_node", status ); + return status; + } + if ( !boot ) { /* Update devlist */ + status = pnp_bios_get_dev_node( &nodenum, boot, data ); + if ( status ) + return status; + } + return status; +} + +#if needed +/* + * Call PnP BIOS with function 0x03, "get event" + */ +static int pnp_bios_get_event(u16 *event) +{ + u16 status; + if (!pnp_bios_present()) + return PNP_FUNCTION_NOT_SUPPORTED; + status = call_pnp_bios(PNP_GET_EVENT, 0, PNP_TS1, PNP_DS, 0, 0 ,0 ,0, + event, sizeof(u16), NULL, 0); + return status; +} +#endif + +#if needed +/* + * Call PnP BIOS with function 0x04, "send message" + */ +static int pnp_bios_send_message(u16 message) +{ + u16 status; + if (!pnp_bios_present()) + return PNP_FUNCTION_NOT_SUPPORTED; + status = call_pnp_bios(PNP_SEND_MESSAGE, message, PNP_DS, 0, 0, 0, 0, 0, 0, 0, 0, 0); + return status; +} +#endif + +/* + * Call PnP BIOS with function 0x05, "get docking station information" + */ +int pnp_bios_dock_station_info(struct pnp_docking_station_info *data) +{ + u16 status; + if (!pnp_bios_present()) + return PNP_FUNCTION_NOT_SUPPORTED; + status = call_pnp_bios(PNP_GET_DOCKING_STATION_INFORMATION, 0, PNP_TS1, PNP_DS, 0, 0, 0, 0, + data, sizeof(struct pnp_docking_station_info), NULL, 0); + return status; +} + +#if needed +/* + * Call PnP BIOS with function 0x09, "set statically allocated resource + * information" + */ +static int pnp_bios_set_stat_res(char *info) +{ + u16 status; + if (!pnp_bios_present()) + return PNP_FUNCTION_NOT_SUPPORTED; + status = call_pnp_bios(PNP_SET_STATIC_ALLOCED_RES_INFO, 0, PNP_TS1, PNP_DS, 0, 0, 0, 0, + info, *((u16 *) info), 0, 0); + return status; +} +#endif + +/* + * Call PnP BIOS with function 0x0a, "get statically allocated resource + * information" + */ +static int __pnp_bios_get_stat_res(char *info) +{ + u16 status; + if (!pnp_bios_present()) + return PNP_FUNCTION_NOT_SUPPORTED; + status = call_pnp_bios(PNP_GET_STATIC_ALLOCED_RES_INFO, 0, PNP_TS1, PNP_DS, 0, 0, 0, 0, + info, 65536, NULL, 0); + return status; +} + +int pnp_bios_get_stat_res(char *info) +{ + int status; + status = __pnp_bios_get_stat_res( info ); + if ( status ) + pnpbios_print_status( "get_stat_res", status ); + return status; +} + +#if needed +/* + * Call PnP BIOS with function 0x0b, "get APM id table" + */ +static int pnp_bios_apm_id_table(char *table, u16 *size) +{ + u16 status; + if (!pnp_bios_present()) + return PNP_FUNCTION_NOT_SUPPORTED; + status = call_pnp_bios(PNP_GET_APM_ID_TABLE, 0, PNP_TS2, 0, PNP_TS1, PNP_DS, 0, 0, + table, *size, size, sizeof(u16)); + return status; +} +#endif + +/* + * Call PnP BIOS with function 0x40, "get isa pnp configuration structure" + */ +static int __pnp_bios_isapnp_config(struct pnp_isa_config_struc *data) +{ + u16 status; + if (!pnp_bios_present()) + return PNP_FUNCTION_NOT_SUPPORTED; + status = call_pnp_bios(PNP_GET_PNP_ISA_CONFIG_STRUC, 0, PNP_TS1, PNP_DS, 0, 0, 0, 0, + data, sizeof(struct pnp_isa_config_struc), NULL, 0); + return status; +} + +int pnp_bios_isapnp_config(struct pnp_isa_config_struc *data) +{ + int status; + status = __pnp_bios_isapnp_config( data ); + if ( status ) + pnpbios_print_status( "isapnp_config", status ); + return status; +} + +/* + * Call PnP BIOS with function 0x41, "get ESCD info" + */ +static int __pnp_bios_escd_info(struct escd_info_struc *data) +{ + u16 status; + if (!pnp_bios_present()) + return ESCD_FUNCTION_NOT_SUPPORTED; + status = call_pnp_bios(PNP_GET_ESCD_INFO, 0, PNP_TS1, 2, PNP_TS1, 4, PNP_TS1, PNP_DS, + data, sizeof(struct escd_info_struc), NULL, 0); + return status; +} + +int pnp_bios_escd_info(struct escd_info_struc *data) +{ + int status; + status = __pnp_bios_escd_info( data ); + if ( status ) + pnpbios_print_status( "escd_info", status ); + return status; +} + +/* + * Call PnP BIOS function 0x42, "read ESCD" + * nvram_base is determined by calling escd_info + */ +static int __pnp_bios_read_escd(char *data, u32 nvram_base) +{ + u16 status; + if (!pnp_bios_present()) + return ESCD_FUNCTION_NOT_SUPPORTED; + status = call_pnp_bios(PNP_READ_ESCD, 0, PNP_TS1, PNP_TS2, PNP_DS, 0, 0, 0, + data, 65536, __va(nvram_base), 65536); + return status; +} + +int pnp_bios_read_escd(char *data, u32 nvram_base) +{ + int status; + status = __pnp_bios_read_escd( data, nvram_base ); + if ( status ) + pnpbios_print_status( "read_escd", status ); + return status; +} + +#if needed +/* + * Call PnP BIOS function 0x43, "write ESCD" + */ +static int pnp_bios_write_escd(char *data, u32 nvram_base) +{ + u16 status; + if (!pnp_bios_present()) + return ESCD_FUNCTION_NOT_SUPPORTED; + status = call_pnp_bios(PNP_WRITE_ESCD, 0, PNP_TS1, PNP_TS2, PNP_DS, 0, 0, 0, + data, 65536, __va(nvram_base), 65536); + return status; +} +#endif + + +/* + * Initialization + */ + +void pnpbios_calls_init(union pnp_bios_install_struct *header) +{ + int i; + spin_lock_init(&pnp_bios_lock); + pnp_bios_callpoint.offset = header->fields.pm16offset; + pnp_bios_callpoint.segment = PNP_CS16; + + set_base(bad_bios_desc, __va((unsigned long)0x40 << 4)); + _set_limit((char *)&bad_bios_desc, 4095 - (0x40 << 4)); + for(i=0; i < NR_CPUS; i++) + { + Q2_SET_SEL(i, PNP_CS32, &pnp_bios_callfunc, 64 * 1024); + Q_SET_SEL(i, PNP_CS16, header->fields.pm16cseg, 64 * 1024); + Q_SET_SEL(i, PNP_DS, header->fields.pm16dseg, 64 * 1024); + } +} diff --git a/drivers/pnp/pnpbios/core.c b/drivers/pnp/pnpbios/core.c new file mode 100644 index 000000000000..0f6330b3af12 --- /dev/null +++ b/drivers/pnp/pnpbios/core.c @@ -0,0 +1,644 @@ +/* + * pnpbios -- PnP BIOS driver + * + * This driver provides access to Plug-'n'-Play services provided by + * the PnP BIOS firmware, described in the following documents: + * Plug and Play BIOS Specification, Version 1.0A, 5 May 1994 + * Plug and Play BIOS Clarification Paper, 6 October 1994 + * Compaq Computer Corporation, Phoenix Technologies Ltd., Intel Corp. + * + * Originally (C) 1998 Christian Schmidt <schmidt@digadd.de> + * Modifications (C) 1998 Tom Lees <tom@lpsg.demon.co.uk> + * Minor reorganizations by David Hinds <dahinds@users.sourceforge.net> + * Further modifications (C) 2001, 2002 by: + * Alan Cox <alan@redhat.com> + * Thomas Hood + * Brian Gerst <bgerst@didntduck.org> + * + * Ported to the PnP Layer and several additional improvements (C) 2002 + * by Adam Belay <ambx1@neo.rr.com> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2, or (at your option) any + * later version. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +/* Change Log + * + * Adam Belay - <ambx1@neo.rr.com> - March 16, 2003 + * rev 1.01 Only call pnp_bios_dev_node_info once + * Added pnpbios_print_status + * Added several new error messages and info messages + * Added pnpbios_interface_attach_device + * integrated core and proc init system + * Introduced PNPMODE flags + * Removed some useless includes + */ + +#include <linux/types.h> +#include <linux/module.h> +#include <linux/init.h> +#include <linux/linkage.h> +#include <linux/kernel.h> +#include <linux/pnpbios.h> +#include <linux/device.h> +#include <linux/pnp.h> +#include <linux/mm.h> +#include <linux/smp.h> +#include <linux/slab.h> +#include <linux/kobject_uevent.h> +#include <linux/completion.h> +#include <linux/spinlock.h> +#include <linux/dmi.h> +#include <linux/delay.h> +#include <linux/acpi.h> + +#include <asm/page.h> +#include <asm/desc.h> +#include <asm/system.h> +#include <asm/byteorder.h> + +#include "pnpbios.h" + + +/* + * + * PnP BIOS INTERFACE + * + */ + +static union pnp_bios_install_struct * pnp_bios_install = NULL; + +int pnp_bios_present(void) +{ + return (pnp_bios_install != NULL); +} + +struct pnp_dev_node_info node_info; + +void *pnpbios_kmalloc(size_t size, int f) +{ + void *p = kmalloc( size, f ); + if ( p == NULL ) + printk(KERN_ERR "PnPBIOS: kmalloc() failed\n"); + else + memset(p, 0, size); + return p; +} + +/* + * + * DOCKING FUNCTIONS + * + */ + +#ifdef CONFIG_HOTPLUG + +static int unloading = 0; +static struct completion unload_sem; + +/* + * (Much of this belongs in a shared routine somewhere) + */ + +static int pnp_dock_event(int dock, struct pnp_docking_station_info *info) +{ + char *argv [3], **envp, *buf, *scratch; + int i = 0, value; + + if (!hotplug_path [0]) + return -ENOENT; + if (!current->fs->root) { + return -EAGAIN; + } + if (!(envp = (char **) pnpbios_kmalloc (20 * sizeof (char *), GFP_KERNEL))) { + return -ENOMEM; + } + if (!(buf = pnpbios_kmalloc (256, GFP_KERNEL))) { + kfree (envp); + return -ENOMEM; + } + + /* only one standardized param to hotplug command: type */ + argv [0] = hotplug_path; + argv [1] = "dock"; + argv [2] = NULL; + + /* minimal command environment */ + envp [i++] = "HOME=/"; + envp [i++] = "PATH=/sbin:/bin:/usr/sbin:/usr/bin"; + +#ifdef DEBUG + /* hint that policy agent should enter no-stdout debug mode */ + envp [i++] = "DEBUG=kernel"; +#endif + /* extensible set of named bus-specific parameters, + * supporting multiple driver selection algorithms. + */ + scratch = buf; + + /* action: add, remove */ + envp [i++] = scratch; + scratch += sprintf (scratch, "ACTION=%s", dock?"add":"remove") + 1; + + /* Report the ident for the dock */ + envp [i++] = scratch; + scratch += sprintf (scratch, "DOCK=%x/%x/%x", + info->location_id, info->serial, info->capabilities); + envp[i] = NULL; + + value = call_usermodehelper (argv [0], argv, envp, 0); + kfree (buf); + kfree (envp); + return 0; +} + +/* + * Poll the PnP docking at regular intervals + */ +static int pnp_dock_thread(void * unused) +{ + static struct pnp_docking_station_info now; + int docked = -1, d = 0; + daemonize("kpnpbiosd"); + allow_signal(SIGKILL); + while(!unloading && !signal_pending(current)) + { + int status; + + /* + * Poll every 2 seconds + */ + msleep_interruptible(2000); + + if(signal_pending(current)) { + if (try_to_freeze(PF_FREEZE)) + continue; + break; + } + + status = pnp_bios_dock_station_info(&now); + + switch(status) + { + /* + * No dock to manage + */ + case PNP_FUNCTION_NOT_SUPPORTED: + complete_and_exit(&unload_sem, 0); + case PNP_SYSTEM_NOT_DOCKED: + d = 0; + break; + case PNP_SUCCESS: + d = 1; + break; + default: + pnpbios_print_status( "pnp_dock_thread", status ); + continue; + } + if(d != docked) + { + if(pnp_dock_event(d, &now)==0) + { + docked = d; +#if 0 + printk(KERN_INFO "PnPBIOS: Docking station %stached\n", docked?"at":"de"); +#endif + } + } + } + complete_and_exit(&unload_sem, 0); +} + +#endif /* CONFIG_HOTPLUG */ + +static int pnpbios_get_resources(struct pnp_dev * dev, struct pnp_resource_table * res) +{ + u8 nodenum = dev->number; + struct pnp_bios_node * node; + + /* just in case */ + if(!pnpbios_is_dynamic(dev)) + return -EPERM; + + node = pnpbios_kmalloc(node_info.max_node_size, GFP_KERNEL); + if (!node) + return -1; + if (pnp_bios_get_dev_node(&nodenum, (char )PNPMODE_DYNAMIC, node)) { + kfree(node); + return -ENODEV; + } + pnpbios_read_resources_from_node(res, node); + dev->active = pnp_is_active(dev); + kfree(node); + return 0; +} + +static int pnpbios_set_resources(struct pnp_dev * dev, struct pnp_resource_table * res) +{ + u8 nodenum = dev->number; + struct pnp_bios_node * node; + int ret; + + /* just in case */ + if (!pnpbios_is_dynamic(dev)) + return -EPERM; + + node = pnpbios_kmalloc(node_info.max_node_size, GFP_KERNEL); + if (!node) + return -1; + if (pnp_bios_get_dev_node(&nodenum, (char )PNPMODE_DYNAMIC, node)) { + kfree(node); + return -ENODEV; + } + if(pnpbios_write_resources_to_node(res, node)<0) { + kfree(node); + return -1; + } + ret = pnp_bios_set_dev_node(node->handle, (char)PNPMODE_DYNAMIC, node); + kfree(node); + if (ret > 0) + ret = -1; + return ret; +} + +static void pnpbios_zero_data_stream(struct pnp_bios_node * node) +{ + unsigned char * p = (char *)node->data; + unsigned char * end = (char *)(node->data + node->size); + unsigned int len; + int i; + while ((char *)p < (char *)end) { + if(p[0] & 0x80) { /* large tag */ + len = (p[2] << 8) | p[1]; + p += 3; + } else { + if (((p[0]>>3) & 0x0f) == 0x0f) + return; + len = p[0] & 0x07; + p += 1; + } + for (i = 0; i < len; i++) + p[i] = 0; + p += len; + } + printk(KERN_ERR "PnPBIOS: Resource structure did not contain an end tag.\n"); +} + +static int pnpbios_disable_resources(struct pnp_dev *dev) +{ + struct pnp_bios_node * node; + u8 nodenum = dev->number; + int ret; + + /* just in case */ + if(dev->flags & PNPBIOS_NO_DISABLE || !pnpbios_is_dynamic(dev)) + return -EPERM; + + node = pnpbios_kmalloc(node_info.max_node_size, GFP_KERNEL); + if (!node) + return -ENOMEM; + + if (pnp_bios_get_dev_node(&nodenum, (char )PNPMODE_DYNAMIC, node)) { + kfree(node); + return -ENODEV; + } + pnpbios_zero_data_stream(node); + + ret = pnp_bios_set_dev_node(dev->number, (char)PNPMODE_DYNAMIC, node); + kfree(node); + if (ret > 0) + ret = -1; + return ret; +} + +/* PnP Layer support */ + +struct pnp_protocol pnpbios_protocol = { + .name = "Plug and Play BIOS", + .get = pnpbios_get_resources, + .set = pnpbios_set_resources, + .disable = pnpbios_disable_resources, +}; + +static int insert_device(struct pnp_dev *dev, struct pnp_bios_node * node) +{ + struct list_head * pos; + struct pnp_dev * pnp_dev; + struct pnp_id *dev_id; + char id[8]; + + /* check if the device is already added */ + dev->number = node->handle; + list_for_each (pos, &pnpbios_protocol.devices){ + pnp_dev = list_entry(pos, struct pnp_dev, protocol_list); + if (dev->number == pnp_dev->number) + return -1; + } + + /* set the initial values for the PnP device */ + dev_id = pnpbios_kmalloc(sizeof(struct pnp_id), GFP_KERNEL); + if (!dev_id) + return -1; + pnpid32_to_pnpid(node->eisa_id,id); + memcpy(dev_id->id,id,7); + pnp_add_id(dev_id, dev); + pnpbios_parse_data_stream(dev, node); + dev->active = pnp_is_active(dev); + dev->flags = node->flags; + if (!(dev->flags & PNPBIOS_NO_CONFIG)) + dev->capabilities |= PNP_CONFIGURABLE; + if (!(dev->flags & PNPBIOS_NO_DISABLE)) + dev->capabilities |= PNP_DISABLE; + dev->capabilities |= PNP_READ; + if (pnpbios_is_dynamic(dev)) + dev->capabilities |= PNP_WRITE; + if (dev->flags & PNPBIOS_REMOVABLE) + dev->capabilities |= PNP_REMOVABLE; + dev->protocol = &pnpbios_protocol; + + /* clear out the damaged flags */ + if (!dev->active) + pnp_init_resource_table(&dev->res); + + pnp_add_device(dev); + pnpbios_interface_attach_device(node); + + return 0; +} + +static void __init build_devlist(void) +{ + u8 nodenum; + unsigned int nodes_got = 0; + unsigned int devs = 0; + struct pnp_bios_node *node; + struct pnp_dev *dev; + + node = pnpbios_kmalloc(node_info.max_node_size, GFP_KERNEL); + if (!node) + return; + + for(nodenum=0; nodenum<0xff; ) { + u8 thisnodenum = nodenum; + /* eventually we will want to use PNPMODE_STATIC here but for now + * dynamic will help us catch buggy bioses to add to the blacklist. + */ + if (!pnpbios_dont_use_current_config) { + if (pnp_bios_get_dev_node(&nodenum, (char )PNPMODE_DYNAMIC, node)) + break; + } else { + if (pnp_bios_get_dev_node(&nodenum, (char )PNPMODE_STATIC, node)) + break; + } + nodes_got++; + dev = pnpbios_kmalloc(sizeof (struct pnp_dev), GFP_KERNEL); + if (!dev) + break; + if(insert_device(dev,node)<0) + kfree(dev); + else + devs++; + if (nodenum <= thisnodenum) { + printk(KERN_ERR "PnPBIOS: build_devlist: Node number 0x%x is out of sequence following node 0x%x. Aborting.\n", (unsigned int)nodenum, (unsigned int)thisnodenum); + break; + } + } + kfree(node); + + printk(KERN_INFO "PnPBIOS: %i node%s reported by PnP BIOS; %i recorded by driver\n", + nodes_got, nodes_got != 1 ? "s" : "", devs); +} + +/* + * + * INIT AND EXIT + * + */ + +static int pnpbios_disabled; /* = 0 */ +int pnpbios_dont_use_current_config; /* = 0 */ + +#ifndef MODULE +static int __init pnpbios_setup(char *str) +{ + int invert; + + while ((str != NULL) && (*str != '\0')) { + if (strncmp(str, "off", 3) == 0) + pnpbios_disabled=1; + if (strncmp(str, "on", 2) == 0) + pnpbios_disabled=0; + invert = (strncmp(str, "no-", 3) == 0); + if (invert) + str += 3; + if (strncmp(str, "curr", 4) == 0) + pnpbios_dont_use_current_config = invert; + str = strchr(str, ','); + if (str != NULL) + str += strspn(str, ", \t"); + } + + return 1; +} + +__setup("pnpbios=", pnpbios_setup); +#endif + +/* PnP BIOS signature: "$PnP" */ +#define PNP_SIGNATURE (('$' << 0) + ('P' << 8) + ('n' << 16) + ('P' << 24)) + +static int __init pnpbios_probe_system(void) +{ + union pnp_bios_install_struct *check; + u8 sum; + int length, i; + + printk(KERN_INFO "PnPBIOS: Scanning system for PnP BIOS support...\n"); + + /* + * Search the defined area (0xf0000-0xffff0) for a valid PnP BIOS + * structure and, if one is found, sets up the selectors and + * entry points + */ + for (check = (union pnp_bios_install_struct *) __va(0xf0000); + check < (union pnp_bios_install_struct *) __va(0xffff0); + check = (void *)check + 16) { + if (check->fields.signature != PNP_SIGNATURE) + continue; + printk(KERN_INFO "PnPBIOS: Found PnP BIOS installation structure at 0x%p\n", check); + length = check->fields.length; + if (!length) { + printk(KERN_ERR "PnPBIOS: installation structure is invalid, skipping\n"); + continue; + } + for (sum = 0, i = 0; i < length; i++) + sum += check->chars[i]; + if (sum) { + printk(KERN_ERR "PnPBIOS: installation structure is corrupted, skipping\n"); + continue; + } + if (check->fields.version < 0x10) { + printk(KERN_WARNING "PnPBIOS: PnP BIOS version %d.%d is not supported\n", + check->fields.version >> 4, + check->fields.version & 15); + continue; + } + printk(KERN_INFO "PnPBIOS: PnP BIOS version %d.%d, entry 0x%x:0x%x, dseg 0x%x\n", + check->fields.version >> 4, check->fields.version & 15, + check->fields.pm16cseg, check->fields.pm16offset, + check->fields.pm16dseg); + pnp_bios_install = check; + return 1; + } + + printk(KERN_INFO "PnPBIOS: PnP BIOS support was not detected.\n"); + return 0; +} + +static int __init exploding_pnp_bios(struct dmi_system_id *d) +{ + printk(KERN_WARNING "%s detected. Disabling PnPBIOS\n", d->ident); + return 0; +} + +static struct dmi_system_id pnpbios_dmi_table[] = { + { /* PnPBIOS GPF on boot */ + .callback = exploding_pnp_bios, + .ident = "Higraded P14H", + .matches = { + DMI_MATCH(DMI_BIOS_VENDOR, "American Megatrends Inc."), + DMI_MATCH(DMI_BIOS_VERSION, "07.00T"), + DMI_MATCH(DMI_SYS_VENDOR, "Higraded"), + DMI_MATCH(DMI_PRODUCT_NAME, "P14H"), + }, + }, + { /* PnPBIOS GPF on boot */ + .callback = exploding_pnp_bios, + .ident = "ASUS P4P800", + .matches = { + DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer Inc."), + DMI_MATCH(DMI_BOARD_NAME, "P4P800"), + }, + }, + { } +}; + +static int __init pnpbios_init(void) +{ + int ret; + + if (pnpbios_disabled || dmi_check_system(pnpbios_dmi_table)) { + printk(KERN_INFO "PnPBIOS: Disabled\n"); + return -ENODEV; + } + +#ifdef CONFIG_PNPACPI + if (!acpi_disabled && !pnpacpi_disabled) { + pnpbios_disabled = 1; + printk(KERN_INFO "PnPBIOS: Disabled by ACPI PNP\n"); + return -ENODEV; + } +#endif /* CONFIG_ACPI */ + + /* scan the system for pnpbios support */ + if (!pnpbios_probe_system()) + return -ENODEV; + + /* make preparations for bios calls */ + pnpbios_calls_init(pnp_bios_install); + + /* read the node info */ + ret = pnp_bios_dev_node_info(&node_info); + if (ret) { + printk(KERN_ERR "PnPBIOS: Unable to get node info. Aborting.\n"); + return ret; + } + + /* register with the pnp layer */ + ret = pnp_register_protocol(&pnpbios_protocol); + if (ret) { + printk(KERN_ERR "PnPBIOS: Unable to register driver. Aborting.\n"); + return ret; + } + + /* start the proc interface */ + ret = pnpbios_proc_init(); + if (ret) + printk(KERN_ERR "PnPBIOS: Failed to create proc interface.\n"); + + /* scan for pnpbios devices */ + build_devlist(); + + return 0; +} + +subsys_initcall(pnpbios_init); + +static int __init pnpbios_thread_init(void) +{ + if (pnpbios_disabled) + return 0; +#ifdef CONFIG_HOTPLUG + init_completion(&unload_sem); + if (kernel_thread(pnp_dock_thread, NULL, CLONE_KERNEL) > 0) + unloading = 0; +#endif + return 0; +} + +#ifndef MODULE + +/* init/main.c calls pnpbios_init early */ + +/* Start the kernel thread later: */ +module_init(pnpbios_thread_init); + +#else + +/* + * N.B.: Building pnpbios as a module hasn't been fully implemented + */ + +MODULE_LICENSE("GPL"); + +static int __init pnpbios_init_all(void) +{ + int r; + + r = pnpbios_init(); + if (r) + return r; + r = pnpbios_thread_init(); + if (r) + return r; + return 0; +} + +static void __exit pnpbios_exit(void) +{ +#ifdef CONFIG_HOTPLUG + unloading = 1; + wait_for_completion(&unload_sem); +#endif + pnpbios_proc_exit(); + /* We ought to free resources here */ + return; +} + +module_init(pnpbios_init_all); +module_exit(pnpbios_exit); + +#endif + +EXPORT_SYMBOL(pnpbios_protocol); diff --git a/drivers/pnp/pnpbios/pnpbios.h b/drivers/pnp/pnpbios/pnpbios.h new file mode 100644 index 000000000000..01896e705ed4 --- /dev/null +++ b/drivers/pnp/pnpbios/pnpbios.h @@ -0,0 +1,47 @@ +/* + * pnpbios.h - contains local definitions + */ + +#pragma pack(1) +union pnp_bios_install_struct { + struct { + u32 signature; /* "$PnP" */ + u8 version; /* in BCD */ + u8 length; /* length in bytes, currently 21h */ + u16 control; /* system capabilities */ + u8 checksum; /* all bytes must add up to 0 */ + + u32 eventflag; /* phys. address of the event flag */ + u16 rmoffset; /* real mode entry point */ + u16 rmcseg; + u16 pm16offset; /* 16 bit protected mode entry */ + u32 pm16cseg; + u32 deviceID; /* EISA encoded system ID or 0 */ + u16 rmdseg; /* real mode data segment */ + u32 pm16dseg; /* 16 bit pm data segment base */ + } fields; + char chars[0x21]; /* To calculate the checksum */ +}; +#pragma pack() + +extern int pnp_bios_present(void); +extern int pnpbios_dont_use_current_config; +extern void *pnpbios_kmalloc(size_t size, int f); + +extern int pnpbios_parse_data_stream(struct pnp_dev *dev, struct pnp_bios_node * node); +extern int pnpbios_read_resources_from_node(struct pnp_resource_table *res, struct pnp_bios_node * node); +extern int pnpbios_write_resources_to_node(struct pnp_resource_table *res, struct pnp_bios_node * node); +extern void pnpid32_to_pnpid(u32 id, char *str); + +extern void pnpbios_print_status(const char * module, u16 status); +extern void pnpbios_calls_init(union pnp_bios_install_struct * header); + +#ifdef CONFIG_PNPBIOS_PROC_FS +extern int pnpbios_interface_attach_device(struct pnp_bios_node * node); +extern int pnpbios_proc_init (void); +extern void pnpbios_proc_exit (void); +#else +static inline int pnpbios_interface_attach_device(struct pnp_bios_node * node) { return 0; } +static inline int pnpbios_proc_init (void) { return 0; } +static inline void pnpbios_proc_exit (void) { ; } +#endif /* CONFIG_PNPBIOS_PROC_FS */ diff --git a/drivers/pnp/pnpbios/proc.c b/drivers/pnp/pnpbios/proc.c new file mode 100644 index 000000000000..6bb8e1973fd4 --- /dev/null +++ b/drivers/pnp/pnpbios/proc.c @@ -0,0 +1,292 @@ +/* + * /proc/bus/pnp interface for Plug and Play devices + * + * Written by David Hinds, dahinds@users.sourceforge.net + * Modified by Thomas Hood + * + * The .../devices and .../<node> and .../boot/<node> files are + * utilized by the lspnp and setpnp utilities, supplied with the + * pcmcia-cs package. + * http://pcmcia-cs.sourceforge.net + * + * The .../escd file is utilized by the lsescd utility written by + * Gunther Mayer. + * http://home.t-online.de/home/gunther.mayer/lsescd + * + * The .../legacy_device_resources file is not used yet. + * + * The other files are human-readable. + */ + +//#include <pcmcia/config.h> +//#include <pcmcia/k_compat.h> + +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/slab.h> +#include <linux/types.h> +#include <linux/proc_fs.h> +#include <linux/pnpbios.h> +#include <linux/init.h> + +#include <asm/uaccess.h> + +#include "pnpbios.h" + +static struct proc_dir_entry *proc_pnp = NULL; +static struct proc_dir_entry *proc_pnp_boot = NULL; + +static int proc_read_pnpconfig(char *buf, char **start, off_t pos, + int count, int *eof, void *data) +{ + struct pnp_isa_config_struc pnps; + + if (pnp_bios_isapnp_config(&pnps)) + return -EIO; + return snprintf(buf, count, + "structure_revision %d\n" + "number_of_CSNs %d\n" + "ISA_read_data_port 0x%x\n", + pnps.revision, + pnps.no_csns, + pnps.isa_rd_data_port + ); +} + +static int proc_read_escdinfo(char *buf, char **start, off_t pos, + int count, int *eof, void *data) +{ + struct escd_info_struc escd; + + if (pnp_bios_escd_info(&escd)) + return -EIO; + return snprintf(buf, count, + "min_ESCD_write_size %d\n" + "ESCD_size %d\n" + "NVRAM_base 0x%x\n", + escd.min_escd_write_size, + escd.escd_size, + escd.nv_storage_base + ); +} + +#define MAX_SANE_ESCD_SIZE (32*1024) +static int proc_read_escd(char *buf, char **start, off_t pos, + int count, int *eof, void *data) +{ + struct escd_info_struc escd; + char *tmpbuf; + int escd_size, escd_left_to_read, n; + + if (pnp_bios_escd_info(&escd)) + return -EIO; + + /* sanity check */ + if (escd.escd_size > MAX_SANE_ESCD_SIZE) { + printk(KERN_ERR "PnPBIOS: proc_read_escd: ESCD size reported by BIOS escd_info call is too great\n"); + return -EFBIG; + } + + tmpbuf = pnpbios_kmalloc(escd.escd_size, GFP_KERNEL); + if (!tmpbuf) return -ENOMEM; + + if (pnp_bios_read_escd(tmpbuf, escd.nv_storage_base)) { + kfree(tmpbuf); + return -EIO; + } + + escd_size = (unsigned char)(tmpbuf[0]) + (unsigned char)(tmpbuf[1])*256; + + /* sanity check */ + if (escd_size > MAX_SANE_ESCD_SIZE) { + printk(KERN_ERR "PnPBIOS: proc_read_escd: ESCD size reported by BIOS read_escd call is too great\n"); + return -EFBIG; + } + + escd_left_to_read = escd_size - pos; + if (escd_left_to_read < 0) escd_left_to_read = 0; + if (escd_left_to_read == 0) *eof = 1; + n = min(count,escd_left_to_read); + memcpy(buf, tmpbuf + pos, n); + kfree(tmpbuf); + *start = buf; + return n; +} + +static int proc_read_legacyres(char *buf, char **start, off_t pos, + int count, int *eof, void *data) +{ + /* Assume that the following won't overflow the buffer */ + if (pnp_bios_get_stat_res(buf)) + return -EIO; + + return count; // FIXME: Return actual length +} + +static int proc_read_devices(char *buf, char **start, off_t pos, + int count, int *eof, void *data) +{ + struct pnp_bios_node *node; + u8 nodenum; + char *p = buf; + + if (pos >= 0xff) + return 0; + + node = pnpbios_kmalloc(node_info.max_node_size, GFP_KERNEL); + if (!node) return -ENOMEM; + + for (nodenum=pos; nodenum<0xff; ) { + u8 thisnodenum = nodenum; + /* 26 = the number of characters per line sprintf'ed */ + if ((p - buf + 26) > count) + break; + if (pnp_bios_get_dev_node(&nodenum, PNPMODE_DYNAMIC, node)) + break; + p += sprintf(p, "%02x\t%08x\t%02x:%02x:%02x\t%04x\n", + node->handle, node->eisa_id, + node->type_code[0], node->type_code[1], + node->type_code[2], node->flags); + if (nodenum <= thisnodenum) { + printk(KERN_ERR "%s Node number 0x%x is out of sequence following node 0x%x. Aborting.\n", "PnPBIOS: proc_read_devices:", (unsigned int)nodenum, (unsigned int)thisnodenum); + *eof = 1; + break; + } + } + kfree(node); + if (nodenum == 0xff) + *eof = 1; + *start = (char *)((off_t)nodenum - pos); + return p - buf; +} + +static int proc_read_node(char *buf, char **start, off_t pos, + int count, int *eof, void *data) +{ + struct pnp_bios_node *node; + int boot = (long)data >> 8; + u8 nodenum = (long)data; + int len; + + node = pnpbios_kmalloc(node_info.max_node_size, GFP_KERNEL); + if (!node) return -ENOMEM; + if (pnp_bios_get_dev_node(&nodenum, boot, node)) { + kfree(node); + return -EIO; + } + len = node->size - sizeof(struct pnp_bios_node); + memcpy(buf, node->data, len); + kfree(node); + return len; +} + +static int proc_write_node(struct file *file, const char __user *buf, + unsigned long count, void *data) +{ + struct pnp_bios_node *node; + int boot = (long)data >> 8; + u8 nodenum = (long)data; + int ret = count; + + node = pnpbios_kmalloc(node_info.max_node_size, GFP_KERNEL); + if (!node) + return -ENOMEM; + if (pnp_bios_get_dev_node(&nodenum, boot, node)) { + ret = -EIO; + goto out; + } + if (count != node->size - sizeof(struct pnp_bios_node)) { + ret = -EINVAL; + goto out; + } + if (copy_from_user(node->data, buf, count)) { + ret = -EFAULT; + goto out; + } + if (pnp_bios_set_dev_node(node->handle, boot, node) != 0) { + ret = -EINVAL; + goto out; + } + ret = count; +out: + kfree(node); + return ret; +} + +int pnpbios_interface_attach_device(struct pnp_bios_node * node) +{ + char name[3]; + struct proc_dir_entry *ent; + + sprintf(name, "%02x", node->handle); + + if (!proc_pnp) + return -EIO; + if ( !pnpbios_dont_use_current_config ) { + ent = create_proc_entry(name, 0, proc_pnp); + if (ent) { + ent->read_proc = proc_read_node; + ent->write_proc = proc_write_node; + ent->data = (void *)(long)(node->handle); + } + } + + if (!proc_pnp_boot) + return -EIO; + ent = create_proc_entry(name, 0, proc_pnp_boot); + if (ent) { + ent->read_proc = proc_read_node; + ent->write_proc = proc_write_node; + ent->data = (void *)(long)(node->handle+0x100); + return 0; + } + + return -EIO; +} + +/* + * When this is called, pnpbios functions are assumed to + * work and the pnpbios_dont_use_current_config flag + * should already have been set to the appropriate value + */ +int __init pnpbios_proc_init( void ) +{ + proc_pnp = proc_mkdir("pnp", proc_bus); + if (!proc_pnp) + return -EIO; + proc_pnp_boot = proc_mkdir("boot", proc_pnp); + if (!proc_pnp_boot) + return -EIO; + create_proc_read_entry("devices", 0, proc_pnp, proc_read_devices, NULL); + create_proc_read_entry("configuration_info", 0, proc_pnp, proc_read_pnpconfig, NULL); + create_proc_read_entry("escd_info", 0, proc_pnp, proc_read_escdinfo, NULL); + create_proc_read_entry("escd", S_IRUSR, proc_pnp, proc_read_escd, NULL); + create_proc_read_entry("legacy_device_resources", 0, proc_pnp, proc_read_legacyres, NULL); + + return 0; +} + +void __exit pnpbios_proc_exit(void) +{ + int i; + char name[3]; + + if (!proc_pnp) + return; + + for (i=0; i<0xff; i++) { + sprintf(name, "%02x", i); + if ( !pnpbios_dont_use_current_config ) + remove_proc_entry(name, proc_pnp); + remove_proc_entry(name, proc_pnp_boot); + } + remove_proc_entry("legacy_device_resources", proc_pnp); + remove_proc_entry("escd", proc_pnp); + remove_proc_entry("escd_info", proc_pnp); + remove_proc_entry("configuration_info", proc_pnp); + remove_proc_entry("devices", proc_pnp); + remove_proc_entry("boot", proc_pnp); + remove_proc_entry("pnp", proc_bus); + + return; +} diff --git a/drivers/pnp/pnpbios/rsparser.c b/drivers/pnp/pnpbios/rsparser.c new file mode 100644 index 000000000000..618ac15a9e90 --- /dev/null +++ b/drivers/pnp/pnpbios/rsparser.c @@ -0,0 +1,795 @@ +/* + * rsparser.c - parses and encodes pnpbios resource data streams + * + */ + +#include <linux/config.h> +#include <linux/ctype.h> +#include <linux/pnp.h> +#include <linux/pnpbios.h> + +#ifdef CONFIG_PCI +#include <linux/pci.h> +#else +inline void pcibios_penalize_isa_irq(int irq) {} +#endif /* CONFIG_PCI */ + +#include "pnpbios.h" + +/* standard resource tags */ +#define SMALL_TAG_PNPVERNO 0x01 +#define SMALL_TAG_LOGDEVID 0x02 +#define SMALL_TAG_COMPATDEVID 0x03 +#define SMALL_TAG_IRQ 0x04 +#define SMALL_TAG_DMA 0x05 +#define SMALL_TAG_STARTDEP 0x06 +#define SMALL_TAG_ENDDEP 0x07 +#define SMALL_TAG_PORT 0x08 +#define SMALL_TAG_FIXEDPORT 0x09 +#define SMALL_TAG_VENDOR 0x0e +#define SMALL_TAG_END 0x0f +#define LARGE_TAG 0x80 +#define LARGE_TAG_MEM 0x81 +#define LARGE_TAG_ANSISTR 0x82 +#define LARGE_TAG_UNICODESTR 0x83 +#define LARGE_TAG_VENDOR 0x84 +#define LARGE_TAG_MEM32 0x85 +#define LARGE_TAG_FIXEDMEM32 0x86 + +/* + * Resource Data Stream Format: + * + * Allocated Resources (required) + * end tag -> + * Resource Configuration Options (optional) + * end tag -> + * Compitable Device IDs (optional) + * final end tag -> + */ + +/* + * Allocated Resources + */ + +static void +pnpbios_parse_allocated_irqresource(struct pnp_resource_table * res, int irq) +{ + int i = 0; + while (!(res->irq_resource[i].flags & IORESOURCE_UNSET) && i < PNP_MAX_IRQ) i++; + if (i < PNP_MAX_IRQ) { + res->irq_resource[i].flags = IORESOURCE_IRQ; // Also clears _UNSET flag + if (irq == -1) { + res->irq_resource[i].flags |= IORESOURCE_DISABLED; + return; + } + res->irq_resource[i].start = + res->irq_resource[i].end = (unsigned long) irq; + pcibios_penalize_isa_irq(irq); + } +} + +static void +pnpbios_parse_allocated_dmaresource(struct pnp_resource_table * res, int dma) +{ + int i = 0; + while (!(res->dma_resource[i].flags & IORESOURCE_UNSET) && i < PNP_MAX_DMA) i++; + if (i < PNP_MAX_DMA) { + res->dma_resource[i].flags = IORESOURCE_DMA; // Also clears _UNSET flag + if (dma == -1) { + res->dma_resource[i].flags |= IORESOURCE_DISABLED; + return; + } + res->dma_resource[i].start = + res->dma_resource[i].end = (unsigned long) dma; + } +} + +static void +pnpbios_parse_allocated_ioresource(struct pnp_resource_table * res, int io, int len) +{ + int i = 0; + while (!(res->port_resource[i].flags & IORESOURCE_UNSET) && i < PNP_MAX_PORT) i++; + if (i < PNP_MAX_PORT) { + res->port_resource[i].flags = IORESOURCE_IO; // Also clears _UNSET flag + if (len <= 0 || (io + len -1) >= 0x10003) { + res->port_resource[i].flags |= IORESOURCE_DISABLED; + return; + } + res->port_resource[i].start = (unsigned long) io; + res->port_resource[i].end = (unsigned long)(io + len - 1); + } +} + +static void +pnpbios_parse_allocated_memresource(struct pnp_resource_table * res, int mem, int len) +{ + int i = 0; + while (!(res->mem_resource[i].flags & IORESOURCE_UNSET) && i < PNP_MAX_MEM) i++; + if (i < PNP_MAX_MEM) { + res->mem_resource[i].flags = IORESOURCE_MEM; // Also clears _UNSET flag + if (len <= 0) { + res->mem_resource[i].flags |= IORESOURCE_DISABLED; + return; + } + res->mem_resource[i].start = (unsigned long) mem; + res->mem_resource[i].end = (unsigned long)(mem + len - 1); + } +} + +static unsigned char * +pnpbios_parse_allocated_resource_data(unsigned char * p, unsigned char * end, struct pnp_resource_table * res) +{ + unsigned int len, tag; + int io, size, mask, i; + + if (!p) + return NULL; + + /* Blank the resource table values */ + pnp_init_resource_table(res); + + while ((char *)p < (char *)end) { + + /* determine the type of tag */ + if (p[0] & LARGE_TAG) { /* large tag */ + len = (p[2] << 8) | p[1]; + tag = p[0]; + } else { /* small tag */ + len = p[0] & 0x07; + tag = ((p[0]>>3) & 0x0f); + } + + switch (tag) { + + case LARGE_TAG_MEM: + if (len != 9) + goto len_err; + io = *(short *) &p[4]; + size = *(short *) &p[10]; + pnpbios_parse_allocated_memresource(res, io, size); + break; + + case LARGE_TAG_ANSISTR: + /* ignore this for now */ + break; + + case LARGE_TAG_VENDOR: + /* do nothing */ + break; + + case LARGE_TAG_MEM32: + if (len != 17) + goto len_err; + io = *(int *) &p[4]; + size = *(int *) &p[16]; + pnpbios_parse_allocated_memresource(res, io, size); + break; + + case LARGE_TAG_FIXEDMEM32: + if (len != 9) + goto len_err; + io = *(int *) &p[4]; + size = *(int *) &p[8]; + pnpbios_parse_allocated_memresource(res, io, size); + break; + + case SMALL_TAG_IRQ: + if (len < 2 || len > 3) + goto len_err; + io = -1; + mask= p[1] + p[2]*256; + for (i=0;i<16;i++, mask=mask>>1) + if(mask & 0x01) io=i; + pnpbios_parse_allocated_irqresource(res, io); + break; + + case SMALL_TAG_DMA: + if (len != 2) + goto len_err; + io = -1; + mask = p[1]; + for (i=0;i<8;i++, mask = mask>>1) + if(mask & 0x01) io=i; + pnpbios_parse_allocated_dmaresource(res, io); + break; + + case SMALL_TAG_PORT: + if (len != 7) + goto len_err; + io = p[2] + p[3] *256; + size = p[7]; + pnpbios_parse_allocated_ioresource(res, io, size); + break; + + case SMALL_TAG_VENDOR: + /* do nothing */ + break; + + case SMALL_TAG_FIXEDPORT: + if (len != 3) + goto len_err; + io = p[1] + p[2] * 256; + size = p[3]; + pnpbios_parse_allocated_ioresource(res, io, size); + break; + + case SMALL_TAG_END: + p = p + 2; + return (unsigned char *)p; + break; + + default: /* an unkown tag */ + len_err: + printk(KERN_ERR "PnPBIOS: Unknown tag '0x%x', length '%d'.\n", tag, len); + break; + } + + /* continue to the next tag */ + if (p[0] & LARGE_TAG) + p += len + 3; + else + p += len + 1; + } + + printk(KERN_ERR "PnPBIOS: Resource structure does not contain an end tag.\n"); + + return NULL; +} + + +/* + * Resource Configuration Options + */ + +static void +pnpbios_parse_mem_option(unsigned char *p, int size, struct pnp_option *option) +{ + struct pnp_mem * mem; + mem = pnpbios_kmalloc(sizeof(struct pnp_mem), GFP_KERNEL); + if (!mem) + return; + mem->min = ((p[5] << 8) | p[4]) << 8; + mem->max = ((p[7] << 8) | p[6]) << 8; + mem->align = (p[9] << 8) | p[8]; + mem->size = ((p[11] << 8) | p[10]) << 8; + mem->flags = p[3]; + pnp_register_mem_resource(option,mem); + return; +} + +static void +pnpbios_parse_mem32_option(unsigned char *p, int size, struct pnp_option *option) +{ + struct pnp_mem * mem; + mem = pnpbios_kmalloc(sizeof(struct pnp_mem), GFP_KERNEL); + if (!mem) + return; + mem->min = (p[7] << 24) | (p[6] << 16) | (p[5] << 8) | p[4]; + mem->max = (p[11] << 24) | (p[10] << 16) | (p[9] << 8) | p[8]; + mem->align = (p[15] << 24) | (p[14] << 16) | (p[13] << 8) | p[12]; + mem->size = (p[19] << 24) | (p[18] << 16) | (p[17] << 8) | p[16]; + mem->flags = p[3]; + pnp_register_mem_resource(option,mem); + return; +} + +static void +pnpbios_parse_fixed_mem32_option(unsigned char *p, int size, struct pnp_option *option) +{ + struct pnp_mem * mem; + mem = pnpbios_kmalloc(sizeof(struct pnp_mem), GFP_KERNEL); + if (!mem) + return; + mem->min = mem->max = (p[7] << 24) | (p[6] << 16) | (p[5] << 8) | p[4]; + mem->size = (p[11] << 24) | (p[10] << 16) | (p[9] << 8) | p[8]; + mem->align = 0; + mem->flags = p[3]; + pnp_register_mem_resource(option,mem); + return; +} + +static void +pnpbios_parse_irq_option(unsigned char *p, int size, struct pnp_option *option) +{ + struct pnp_irq * irq; + unsigned long bits; + + irq = pnpbios_kmalloc(sizeof(struct pnp_irq), GFP_KERNEL); + if (!irq) + return; + bits = (p[2] << 8) | p[1]; + bitmap_copy(irq->map, &bits, 16); + if (size > 2) + irq->flags = p[3]; + else + irq->flags = IORESOURCE_IRQ_HIGHEDGE; + pnp_register_irq_resource(option,irq); + return; +} + +static void +pnpbios_parse_dma_option(unsigned char *p, int size, struct pnp_option *option) +{ + struct pnp_dma * dma; + dma = pnpbios_kmalloc(sizeof(struct pnp_dma), GFP_KERNEL); + if (!dma) + return; + dma->map = p[1]; + dma->flags = p[2]; + pnp_register_dma_resource(option,dma); + return; +} + +static void +pnpbios_parse_port_option(unsigned char *p, int size, struct pnp_option *option) +{ + struct pnp_port * port; + port = pnpbios_kmalloc(sizeof(struct pnp_port), GFP_KERNEL); + if (!port) + return; + port->min = (p[3] << 8) | p[2]; + port->max = (p[5] << 8) | p[4]; + port->align = p[6]; + port->size = p[7]; + port->flags = p[1] ? PNP_PORT_FLAG_16BITADDR : 0; + pnp_register_port_resource(option,port); + return; +} + +static void +pnpbios_parse_fixed_port_option(unsigned char *p, int size, struct pnp_option *option) +{ + struct pnp_port * port; + port = pnpbios_kmalloc(sizeof(struct pnp_port), GFP_KERNEL); + if (!port) + return; + port->min = port->max = (p[2] << 8) | p[1]; + port->size = p[3]; + port->align = 0; + port->flags = PNP_PORT_FLAG_FIXED; + pnp_register_port_resource(option,port); + return; +} + +static unsigned char * +pnpbios_parse_resource_option_data(unsigned char * p, unsigned char * end, struct pnp_dev *dev) +{ + unsigned int len, tag; + int priority = 0; + struct pnp_option *option, *option_independent; + + if (!p) + return NULL; + + option_independent = option = pnp_register_independent_option(dev); + if (!option) + return NULL; + + while ((char *)p < (char *)end) { + + /* determine the type of tag */ + if (p[0] & LARGE_TAG) { /* large tag */ + len = (p[2] << 8) | p[1]; + tag = p[0]; + } else { /* small tag */ + len = p[0] & 0x07; + tag = ((p[0]>>3) & 0x0f); + } + + switch (tag) { + + case LARGE_TAG_MEM: + if (len != 9) + goto len_err; + pnpbios_parse_mem_option(p, len, option); + break; + + case LARGE_TAG_MEM32: + if (len != 17) + goto len_err; + pnpbios_parse_mem32_option(p, len, option); + break; + + case LARGE_TAG_FIXEDMEM32: + if (len != 9) + goto len_err; + pnpbios_parse_fixed_mem32_option(p, len, option); + break; + + case SMALL_TAG_IRQ: + if (len < 2 || len > 3) + goto len_err; + pnpbios_parse_irq_option(p, len, option); + break; + + case SMALL_TAG_DMA: + if (len != 2) + goto len_err; + pnpbios_parse_dma_option(p, len, option); + break; + + case SMALL_TAG_PORT: + if (len != 7) + goto len_err; + pnpbios_parse_port_option(p, len, option); + break; + + case SMALL_TAG_VENDOR: + /* do nothing */ + break; + + case SMALL_TAG_FIXEDPORT: + if (len != 3) + goto len_err; + pnpbios_parse_fixed_port_option(p, len, option); + break; + + case SMALL_TAG_STARTDEP: + if (len > 1) + goto len_err; + priority = 0x100 | PNP_RES_PRIORITY_ACCEPTABLE; + if (len > 0) + priority = 0x100 | p[1]; + option = pnp_register_dependent_option(dev, priority); + if (!option) + return NULL; + break; + + case SMALL_TAG_ENDDEP: + if (len != 0) + goto len_err; + if (option_independent == option) + printk(KERN_WARNING "PnPBIOS: Missing SMALL_TAG_STARTDEP tag\n"); + option = option_independent; + break; + + case SMALL_TAG_END: + if (option_independent != option) + printk(KERN_WARNING "PnPBIOS: Missing SMALL_TAG_ENDDEP tag\n"); + p = p + 2; + return (unsigned char *)p; + break; + + default: /* an unkown tag */ + len_err: + printk(KERN_ERR "PnPBIOS: Unknown tag '0x%x', length '%d'.\n", tag, len); + break; + } + + /* continue to the next tag */ + if (p[0] & LARGE_TAG) + p += len + 3; + else + p += len + 1; + } + + printk(KERN_ERR "PnPBIOS: Resource structure does not contain an end tag.\n"); + + return NULL; +} + + +/* + * Compatible Device IDs + */ + +#define HEX(id,a) hex[((id)>>a) & 15] +#define CHAR(id,a) (0x40 + (((id)>>a) & 31)) +// + +void pnpid32_to_pnpid(u32 id, char *str) +{ + const char *hex = "0123456789abcdef"; + + id = be32_to_cpu(id); + str[0] = CHAR(id, 26); + str[1] = CHAR(id, 21); + str[2] = CHAR(id,16); + str[3] = HEX(id, 12); + str[4] = HEX(id, 8); + str[5] = HEX(id, 4); + str[6] = HEX(id, 0); + str[7] = '\0'; + + return; +} +// +#undef CHAR +#undef HEX + +static unsigned char * +pnpbios_parse_compatible_ids(unsigned char *p, unsigned char *end, struct pnp_dev *dev) +{ + int len, tag; + char id[8]; + struct pnp_id *dev_id; + + if (!p) + return NULL; + + while ((char *)p < (char *)end) { + + /* determine the type of tag */ + if (p[0] & LARGE_TAG) { /* large tag */ + len = (p[2] << 8) | p[1]; + tag = p[0]; + } else { /* small tag */ + len = p[0] & 0x07; + tag = ((p[0]>>3) & 0x0f); + } + + switch (tag) { + + case LARGE_TAG_ANSISTR: + strncpy(dev->name, p + 3, len >= PNP_NAME_LEN ? PNP_NAME_LEN - 2 : len); + dev->name[len >= PNP_NAME_LEN ? PNP_NAME_LEN - 1 : len] = '\0'; + break; + + case SMALL_TAG_COMPATDEVID: /* compatible ID */ + if (len != 4) + goto len_err; + dev_id = pnpbios_kmalloc(sizeof (struct pnp_id), GFP_KERNEL); + if (!dev_id) + return NULL; + memset(dev_id, 0, sizeof(struct pnp_id)); + pnpid32_to_pnpid(p[1] | p[2] << 8 | p[3] << 16 | p[4] << 24,id); + memcpy(&dev_id->id, id, 7); + pnp_add_id(dev_id, dev); + break; + + case SMALL_TAG_END: + p = p + 2; + return (unsigned char *)p; + break; + + default: /* an unkown tag */ + len_err: + printk(KERN_ERR "PnPBIOS: Unknown tag '0x%x', length '%d'.\n", tag, len); + break; + } + + /* continue to the next tag */ + if (p[0] & LARGE_TAG) + p += len + 3; + else + p += len + 1; + } + + printk(KERN_ERR "PnPBIOS: Resource structure does not contain an end tag.\n"); + + return NULL; +} + + +/* + * Allocated Resource Encoding + */ + +static void pnpbios_encode_mem(unsigned char *p, struct resource * res) +{ + unsigned long base = res->start; + unsigned long len = res->end - res->start + 1; + p[4] = (base >> 8) & 0xff; + p[5] = ((base >> 8) >> 8) & 0xff; + p[6] = (base >> 8) & 0xff; + p[7] = ((base >> 8) >> 8) & 0xff; + p[10] = (len >> 8) & 0xff; + p[11] = ((len >> 8) >> 8) & 0xff; + return; +} + +static void pnpbios_encode_mem32(unsigned char *p, struct resource * res) +{ + unsigned long base = res->start; + unsigned long len = res->end - res->start + 1; + p[4] = base & 0xff; + p[5] = (base >> 8) & 0xff; + p[6] = (base >> 16) & 0xff; + p[7] = (base >> 24) & 0xff; + p[8] = base & 0xff; + p[9] = (base >> 8) & 0xff; + p[10] = (base >> 16) & 0xff; + p[11] = (base >> 24) & 0xff; + p[16] = len & 0xff; + p[17] = (len >> 8) & 0xff; + p[18] = (len >> 16) & 0xff; + p[19] = (len >> 24) & 0xff; + return; +} + +static void pnpbios_encode_fixed_mem32(unsigned char *p, struct resource * res) +{ unsigned long base = res->start; + unsigned long len = res->end - res->start + 1; + p[4] = base & 0xff; + p[5] = (base >> 8) & 0xff; + p[6] = (base >> 16) & 0xff; + p[7] = (base >> 24) & 0xff; + p[8] = len & 0xff; + p[9] = (len >> 8) & 0xff; + p[10] = (len >> 16) & 0xff; + p[11] = (len >> 24) & 0xff; + return; +} + +static void pnpbios_encode_irq(unsigned char *p, struct resource * res) +{ + unsigned long map = 0; + map = 1 << res->start; + p[1] = map & 0xff; + p[2] = (map >> 8) & 0xff; + return; +} + +static void pnpbios_encode_dma(unsigned char *p, struct resource * res) +{ + unsigned long map = 0; + map = 1 << res->start; + p[1] = map & 0xff; + return; +} + +static void pnpbios_encode_port(unsigned char *p, struct resource * res) +{ + unsigned long base = res->start; + unsigned long len = res->end - res->start + 1; + p[2] = base & 0xff; + p[3] = (base >> 8) & 0xff; + p[4] = base & 0xff; + p[5] = (base >> 8) & 0xff; + p[7] = len & 0xff; + return; +} + +static void pnpbios_encode_fixed_port(unsigned char *p, struct resource * res) +{ + unsigned long base = res->start; + unsigned long len = res->end - res->start + 1; + p[1] = base & 0xff; + p[2] = (base >> 8) & 0xff; + p[3] = len & 0xff; + return; +} + +static unsigned char * +pnpbios_encode_allocated_resource_data(unsigned char * p, unsigned char * end, struct pnp_resource_table * res) +{ + unsigned int len, tag; + int port = 0, irq = 0, dma = 0, mem = 0; + + if (!p) + return NULL; + + while ((char *)p < (char *)end) { + + /* determine the type of tag */ + if (p[0] & LARGE_TAG) { /* large tag */ + len = (p[2] << 8) | p[1]; + tag = p[0]; + } else { /* small tag */ + len = p[0] & 0x07; + tag = ((p[0]>>3) & 0x0f); + } + + switch (tag) { + + case LARGE_TAG_MEM: + if (len != 9) + goto len_err; + pnpbios_encode_mem(p, &res->mem_resource[mem]); + mem++; + break; + + case LARGE_TAG_MEM32: + if (len != 17) + goto len_err; + pnpbios_encode_mem32(p, &res->mem_resource[mem]); + mem++; + break; + + case LARGE_TAG_FIXEDMEM32: + if (len != 9) + goto len_err; + pnpbios_encode_fixed_mem32(p, &res->mem_resource[mem]); + mem++; + break; + + case SMALL_TAG_IRQ: + if (len < 2 || len > 3) + goto len_err; + pnpbios_encode_irq(p, &res->irq_resource[irq]); + irq++; + break; + + case SMALL_TAG_DMA: + if (len != 2) + goto len_err; + pnpbios_encode_dma(p, &res->dma_resource[dma]); + dma++; + break; + + case SMALL_TAG_PORT: + if (len != 7) + goto len_err; + pnpbios_encode_port(p, &res->port_resource[port]); + port++; + break; + + case SMALL_TAG_VENDOR: + /* do nothing */ + break; + + case SMALL_TAG_FIXEDPORT: + if (len != 3) + goto len_err; + pnpbios_encode_fixed_port(p, &res->port_resource[port]); + port++; + break; + + case SMALL_TAG_END: + p = p + 2; + return (unsigned char *)p; + break; + + default: /* an unkown tag */ + len_err: + printk(KERN_ERR "PnPBIOS: Unknown tag '0x%x', length '%d'.\n", tag, len); + break; + } + + /* continue to the next tag */ + if (p[0] & LARGE_TAG) + p += len + 3; + else + p += len + 1; + } + + printk(KERN_ERR "PnPBIOS: Resource structure does not contain an end tag.\n"); + + return NULL; +} + + +/* + * Core Parsing Functions + */ + +int +pnpbios_parse_data_stream(struct pnp_dev *dev, struct pnp_bios_node * node) +{ + unsigned char * p = (char *)node->data; + unsigned char * end = (char *)(node->data + node->size); + p = pnpbios_parse_allocated_resource_data(p,end,&dev->res); + if (!p) + return -EIO; + p = pnpbios_parse_resource_option_data(p,end,dev); + if (!p) + return -EIO; + p = pnpbios_parse_compatible_ids(p,end,dev); + if (!p) + return -EIO; + return 0; +} + +int +pnpbios_read_resources_from_node(struct pnp_resource_table *res, + struct pnp_bios_node * node) +{ + unsigned char * p = (char *)node->data; + unsigned char * end = (char *)(node->data + node->size); + p = pnpbios_parse_allocated_resource_data(p,end,res); + if (!p) + return -EIO; + return 0; +} + +int +pnpbios_write_resources_to_node(struct pnp_resource_table *res, + struct pnp_bios_node * node) +{ + unsigned char * p = (char *)node->data; + unsigned char * end = (char *)(node->data + node->size); + p = pnpbios_encode_allocated_resource_data(p,end,res); + if (!p) + return -EIO; + return 0; +} diff --git a/drivers/pnp/quirks.c b/drivers/pnp/quirks.c new file mode 100644 index 000000000000..596a02d7e03d --- /dev/null +++ b/drivers/pnp/quirks.c @@ -0,0 +1,152 @@ +/* + * This file contains quirk handling code for PnP devices + * Some devices do not report all their resources, and need to have extra + * resources added. This is most easily accomplished at initialisation time + * when building up the resource structure for the first time. + * + * Copyright (c) 2000 Peter Denison <peterd@pnd-pc.demon.co.uk> + * + * Heavily based on PCI quirks handling which is + * + * Copyright (c) 1999 Martin Mares <mj@ucw.cz> + */ + +#include <linux/config.h> +#include <linux/types.h> +#include <linux/kernel.h> +#include <linux/string.h> +#include <linux/slab.h> + +#ifdef CONFIG_PNP_DEBUG + #define DEBUG +#else + #undef DEBUG +#endif + +#include <linux/pnp.h> +#include "base.h" + + +static void quirk_awe32_resources(struct pnp_dev *dev) +{ + struct pnp_port *port, *port2, *port3; + struct pnp_option *res = dev->dependent; + + /* + * Unfortunately the isapnp_add_port_resource is too tightly bound + * into the PnP discovery sequence, and cannot be used. Link in the + * two extra ports (at offset 0x400 and 0x800 from the one given) by + * hand. + */ + for ( ; res ; res = res->next ) { + port2 = pnp_alloc(sizeof(struct pnp_port)); + if (!port2) + return; + port3 = pnp_alloc(sizeof(struct pnp_port)); + if (!port3) { + kfree(port2); + return; + } + port = res->port; + memcpy(port2, port, sizeof(struct pnp_port)); + memcpy(port3, port, sizeof(struct pnp_port)); + port->next = port2; + port2->next = port3; + port2->min += 0x400; + port2->max += 0x400; + port3->min += 0x800; + port3->max += 0x800; + } + printk(KERN_INFO "pnp: AWE32 quirk - adding two ports\n"); +} + +static void quirk_cmi8330_resources(struct pnp_dev *dev) +{ + struct pnp_option *res = dev->dependent; + unsigned long tmp; + + for ( ; res ; res = res->next ) { + + struct pnp_irq *irq; + struct pnp_dma *dma; + + for( irq = res->irq; irq; irq = irq->next ) { // Valid irqs are 5, 7, 10 + tmp = 0x04A0; + bitmap_copy(irq->map, &tmp, 16); // 0000 0100 1010 0000 + } + + for( dma = res->dma; dma; dma = dma->next ) // Valid 8bit dma channels are 1,3 + if( ( dma->flags & IORESOURCE_DMA_TYPE_MASK ) == IORESOURCE_DMA_8BIT ) + dma->map = 0x000A; + } + printk(KERN_INFO "pnp: CMI8330 quirk - fixing interrupts and dma\n"); +} + +static void quirk_sb16audio_resources(struct pnp_dev *dev) +{ + struct pnp_port *port; + struct pnp_option *res = dev->dependent; + int changed = 0; + + /* + * The default range on the mpu port for these devices is 0x388-0x388. + * Here we increase that range so that two such cards can be + * auto-configured. + */ + + for( ; res ; res = res->next ) { + port = res->port; + if(!port) + continue; + port = port->next; + if(!port) + continue; + port = port->next; + if(!port) + continue; + if(port->min != port->max) + continue; + port->max += 0x70; + changed = 1; + } + if(changed) + printk(KERN_INFO "pnp: SB audio device quirk - increasing port range\n"); + return; +} + +/* + * PnP Quirks + * Cards or devices that need some tweaking due to incomplete resource info + */ + +static struct pnp_fixup pnp_fixups[] = { + /* Soundblaster awe io port quirk */ + { "CTL0021", quirk_awe32_resources }, + { "CTL0022", quirk_awe32_resources }, + { "CTL0023", quirk_awe32_resources }, + /* CMI 8330 interrupt and dma fix */ + { "@X@0001", quirk_cmi8330_resources }, + /* Soundblaster audio device io port range quirk */ + { "CTL0001", quirk_sb16audio_resources }, + { "CTL0031", quirk_sb16audio_resources }, + { "CTL0041", quirk_sb16audio_resources }, + { "CTL0042", quirk_sb16audio_resources }, + { "CTL0043", quirk_sb16audio_resources }, + { "CTL0044", quirk_sb16audio_resources }, + { "CTL0045", quirk_sb16audio_resources }, + { "" } +}; + +void pnp_fixup_device(struct pnp_dev *dev) +{ + int i = 0; + + while (*pnp_fixups[i].id) { + if (compare_pnp_id(dev->id,pnp_fixups[i].id)) { + pnp_dbg("Calling quirk for %s", + dev->dev.bus_id); + pnp_fixups[i].quirk_function(dev); + } + i++; + } +} diff --git a/drivers/pnp/resource.c b/drivers/pnp/resource.c new file mode 100644 index 000000000000..2d1322dd7e19 --- /dev/null +++ b/drivers/pnp/resource.c @@ -0,0 +1,542 @@ +/* + * resource.c - Contains functions for registering and analyzing resource information + * + * based on isapnp.c resource management (c) Jaroslav Kysela <perex@suse.cz> + * Copyright 2003 Adam Belay <ambx1@neo.rr.com> + * + */ + +#include <linux/config.h> +#include <linux/module.h> +#include <linux/errno.h> +#include <linux/interrupt.h> +#include <linux/kernel.h> +#include <asm/io.h> +#include <asm/dma.h> +#include <asm/irq.h> +#include <linux/pci.h> +#include <linux/ioport.h> +#include <linux/init.h> + +#include <linux/pnp.h> +#include "base.h" + +static int pnp_reserve_irq[16] = { [0 ... 15] = -1 }; /* reserve (don't use) some IRQ */ +static int pnp_reserve_dma[8] = { [0 ... 7] = -1 }; /* reserve (don't use) some DMA */ +static int pnp_reserve_io[16] = { [0 ... 15] = -1 }; /* reserve (don't use) some I/O region */ +static int pnp_reserve_mem[16] = { [0 ... 15] = -1 }; /* reserve (don't use) some memory region */ + + +/* + * option registration + */ + +static struct pnp_option * pnp_build_option(int priority) +{ + struct pnp_option *option = pnp_alloc(sizeof(struct pnp_option)); + + /* check if pnp_alloc ran out of memory */ + if (!option) + return NULL; + + option->priority = priority & 0xff; + /* make sure the priority is valid */ + if (option->priority > PNP_RES_PRIORITY_FUNCTIONAL) + option->priority = PNP_RES_PRIORITY_INVALID; + + return option; +} + +struct pnp_option * pnp_register_independent_option(struct pnp_dev *dev) +{ + struct pnp_option *option; + if (!dev) + return NULL; + + option = pnp_build_option(PNP_RES_PRIORITY_PREFERRED); + + /* this should never happen but if it does we'll try to continue */ + if (dev->independent) + pnp_err("independent resource already registered"); + dev->independent = option; + return option; +} + +struct pnp_option * pnp_register_dependent_option(struct pnp_dev *dev, int priority) +{ + struct pnp_option *option; + if (!dev) + return NULL; + + option = pnp_build_option(priority); + + if (dev->dependent) { + struct pnp_option *parent = dev->dependent; + while (parent->next) + parent = parent->next; + parent->next = option; + } else + dev->dependent = option; + return option; +} + +int pnp_register_irq_resource(struct pnp_option *option, struct pnp_irq *data) +{ + struct pnp_irq *ptr; + if (!option) + return -EINVAL; + if (!data) + return -EINVAL; + + ptr = option->irq; + while (ptr && ptr->next) + ptr = ptr->next; + if (ptr) + ptr->next = data; + else + option->irq = data; + +#ifdef CONFIG_PCI + { + int i; + + for (i = 0; i < 16; i++) + if (test_bit(i, data->map)) + pcibios_penalize_isa_irq(i); + } +#endif + return 0; +} + +int pnp_register_dma_resource(struct pnp_option *option, struct pnp_dma *data) +{ + struct pnp_dma *ptr; + if (!option) + return -EINVAL; + if (!data) + return -EINVAL; + + ptr = option->dma; + while (ptr && ptr->next) + ptr = ptr->next; + if (ptr) + ptr->next = data; + else + option->dma = data; + + return 0; +} + +int pnp_register_port_resource(struct pnp_option *option, struct pnp_port *data) +{ + struct pnp_port *ptr; + if (!option) + return -EINVAL; + if (!data) + return -EINVAL; + + ptr = option->port; + while (ptr && ptr->next) + ptr = ptr->next; + if (ptr) + ptr->next = data; + else + option->port = data; + + return 0; +} + +int pnp_register_mem_resource(struct pnp_option *option, struct pnp_mem *data) +{ + struct pnp_mem *ptr; + if (!option) + return -EINVAL; + if (!data) + return -EINVAL; + + ptr = option->mem; + while (ptr && ptr->next) + ptr = ptr->next; + if (ptr) + ptr->next = data; + else + option->mem = data; + return 0; +} + +static void pnp_free_port(struct pnp_port *port) +{ + struct pnp_port *next; + + while (port) { + next = port->next; + kfree(port); + port = next; + } +} + +static void pnp_free_irq(struct pnp_irq *irq) +{ + struct pnp_irq *next; + + while (irq) { + next = irq->next; + kfree(irq); + irq = next; + } +} + +static void pnp_free_dma(struct pnp_dma *dma) +{ + struct pnp_dma *next; + + while (dma) { + next = dma->next; + kfree(dma); + dma = next; + } +} + +static void pnp_free_mem(struct pnp_mem *mem) +{ + struct pnp_mem *next; + + while (mem) { + next = mem->next; + kfree(mem); + mem = next; + } +} + +void pnp_free_option(struct pnp_option *option) +{ + struct pnp_option *next; + + while (option) { + next = option->next; + pnp_free_port(option->port); + pnp_free_irq(option->irq); + pnp_free_dma(option->dma); + pnp_free_mem(option->mem); + kfree(option); + option = next; + } +} + + +/* + * resource validity checking + */ + +#define length(start, end) (*(end) - *(start) + 1) + +/* Two ranges conflict if one doesn't end before the other starts */ +#define ranged_conflict(starta, enda, startb, endb) \ + !((*(enda) < *(startb)) || (*(endb) < *(starta))) + +#define cannot_compare(flags) \ +((flags) & (IORESOURCE_UNSET | IORESOURCE_DISABLED)) + +int pnp_check_port(struct pnp_dev * dev, int idx) +{ + int tmp; + struct pnp_dev *tdev; + unsigned long *port, *end, *tport, *tend; + port = &dev->res.port_resource[idx].start; + end = &dev->res.port_resource[idx].end; + + /* if the resource doesn't exist, don't complain about it */ + if (cannot_compare(dev->res.port_resource[idx].flags)) + return 1; + + /* check if the resource is already in use, skip if the + * device is active because it itself may be in use */ + if(!dev->active) { + if (__check_region(&ioport_resource, *port, length(port,end))) + return 0; + } + + /* check if the resource is reserved */ + for (tmp = 0; tmp < 8; tmp++) { + int rport = pnp_reserve_io[tmp << 1]; + int rend = pnp_reserve_io[(tmp << 1) + 1] + rport - 1; + if (ranged_conflict(port,end,&rport,&rend)) + return 0; + } + + /* check for internal conflicts */ + for (tmp = 0; tmp < PNP_MAX_PORT && tmp != idx; tmp++) { + if (dev->res.port_resource[tmp].flags & IORESOURCE_IO) { + tport = &dev->res.port_resource[tmp].start; + tend = &dev->res.port_resource[tmp].end; + if (ranged_conflict(port,end,tport,tend)) + return 0; + } + } + + /* check for conflicts with other pnp devices */ + pnp_for_each_dev(tdev) { + if (tdev == dev) + continue; + for (tmp = 0; tmp < PNP_MAX_PORT; tmp++) { + if (tdev->res.port_resource[tmp].flags & IORESOURCE_IO) { + if (cannot_compare(tdev->res.port_resource[tmp].flags)) + continue; + tport = &tdev->res.port_resource[tmp].start; + tend = &tdev->res.port_resource[tmp].end; + if (ranged_conflict(port,end,tport,tend)) + return 0; + } + } + } + + return 1; +} + +int pnp_check_mem(struct pnp_dev * dev, int idx) +{ + int tmp; + struct pnp_dev *tdev; + unsigned long *addr, *end, *taddr, *tend; + addr = &dev->res.mem_resource[idx].start; + end = &dev->res.mem_resource[idx].end; + + /* if the resource doesn't exist, don't complain about it */ + if (cannot_compare(dev->res.mem_resource[idx].flags)) + return 1; + + /* check if the resource is already in use, skip if the + * device is active because it itself may be in use */ + if(!dev->active) { + if (check_mem_region(*addr, length(addr,end))) + return 0; + } + + /* check if the resource is reserved */ + for (tmp = 0; tmp < 8; tmp++) { + int raddr = pnp_reserve_mem[tmp << 1]; + int rend = pnp_reserve_mem[(tmp << 1) + 1] + raddr - 1; + if (ranged_conflict(addr,end,&raddr,&rend)) + return 0; + } + + /* check for internal conflicts */ + for (tmp = 0; tmp < PNP_MAX_MEM && tmp != idx; tmp++) { + if (dev->res.mem_resource[tmp].flags & IORESOURCE_MEM) { + taddr = &dev->res.mem_resource[tmp].start; + tend = &dev->res.mem_resource[tmp].end; + if (ranged_conflict(addr,end,taddr,tend)) + return 0; + } + } + + /* check for conflicts with other pnp devices */ + pnp_for_each_dev(tdev) { + if (tdev == dev) + continue; + for (tmp = 0; tmp < PNP_MAX_MEM; tmp++) { + if (tdev->res.mem_resource[tmp].flags & IORESOURCE_MEM) { + if (cannot_compare(tdev->res.mem_resource[tmp].flags)) + continue; + taddr = &tdev->res.mem_resource[tmp].start; + tend = &tdev->res.mem_resource[tmp].end; + if (ranged_conflict(addr,end,taddr,tend)) + return 0; + } + } + } + + return 1; +} + +static irqreturn_t pnp_test_handler(int irq, void *dev_id, struct pt_regs *regs) +{ + return IRQ_HANDLED; +} + +int pnp_check_irq(struct pnp_dev * dev, int idx) +{ + int tmp; + struct pnp_dev *tdev; + unsigned long * irq = &dev->res.irq_resource[idx].start; + + /* if the resource doesn't exist, don't complain about it */ + if (cannot_compare(dev->res.irq_resource[idx].flags)) + return 1; + + /* check if the resource is valid */ + if (*irq < 0 || *irq > 15) + return 0; + + /* check if the resource is reserved */ + for (tmp = 0; tmp < 16; tmp++) { + if (pnp_reserve_irq[tmp] == *irq) + return 0; + } + + /* check for internal conflicts */ + for (tmp = 0; tmp < PNP_MAX_IRQ && tmp != idx; tmp++) { + if (dev->res.irq_resource[tmp].flags & IORESOURCE_IRQ) { + if (dev->res.irq_resource[tmp].start == *irq) + return 0; + } + } + +#ifdef CONFIG_PCI + /* check if the resource is being used by a pci device */ + { + struct pci_dev *pci = NULL; + for_each_pci_dev(pci) { + if (pci->irq == *irq) + return 0; + } + } +#endif + + /* check if the resource is already in use, skip if the + * device is active because it itself may be in use */ + if(!dev->active) { + if (request_irq(*irq, pnp_test_handler, SA_INTERRUPT, "pnp", NULL)) + return 0; + free_irq(*irq, NULL); + } + + /* check for conflicts with other pnp devices */ + pnp_for_each_dev(tdev) { + if (tdev == dev) + continue; + for (tmp = 0; tmp < PNP_MAX_IRQ; tmp++) { + if (tdev->res.irq_resource[tmp].flags & IORESOURCE_IRQ) { + if (cannot_compare(tdev->res.irq_resource[tmp].flags)) + continue; + if ((tdev->res.irq_resource[tmp].start == *irq)) + return 0; + } + } + } + + return 1; +} + +int pnp_check_dma(struct pnp_dev * dev, int idx) +{ +#ifndef CONFIG_IA64 + int tmp; + struct pnp_dev *tdev; + unsigned long * dma = &dev->res.dma_resource[idx].start; + + /* if the resource doesn't exist, don't complain about it */ + if (cannot_compare(dev->res.dma_resource[idx].flags)) + return 1; + + /* check if the resource is valid */ + if (*dma < 0 || *dma == 4 || *dma > 7) + return 0; + + /* check if the resource is reserved */ + for (tmp = 0; tmp < 8; tmp++) { + if (pnp_reserve_dma[tmp] == *dma) + return 0; + } + + /* check for internal conflicts */ + for (tmp = 0; tmp < PNP_MAX_DMA && tmp != idx; tmp++) { + if (dev->res.dma_resource[tmp].flags & IORESOURCE_DMA) { + if (dev->res.dma_resource[tmp].start == *dma) + return 0; + } + } + + /* check if the resource is already in use, skip if the + * device is active because it itself may be in use */ + if(!dev->active) { + if (request_dma(*dma, "pnp")) + return 0; + free_dma(*dma); + } + + /* check for conflicts with other pnp devices */ + pnp_for_each_dev(tdev) { + if (tdev == dev) + continue; + for (tmp = 0; tmp < PNP_MAX_DMA; tmp++) { + if (tdev->res.dma_resource[tmp].flags & IORESOURCE_DMA) { + if (cannot_compare(tdev->res.dma_resource[tmp].flags)) + continue; + if ((tdev->res.dma_resource[tmp].start == *dma)) + return 0; + } + } + } + + return 1; +#else + /* IA64 hasn't legacy DMA */ + return 0; +#endif +} + + +EXPORT_SYMBOL(pnp_register_dependent_option); +EXPORT_SYMBOL(pnp_register_independent_option); +EXPORT_SYMBOL(pnp_register_irq_resource); +EXPORT_SYMBOL(pnp_register_dma_resource); +EXPORT_SYMBOL(pnp_register_port_resource); +EXPORT_SYMBOL(pnp_register_mem_resource); + + +/* format is: pnp_reserve_irq=irq1[,irq2] .... */ + +static int __init pnp_setup_reserve_irq(char *str) +{ + int i; + + for (i = 0; i < 16; i++) + if (get_option(&str,&pnp_reserve_irq[i]) != 2) + break; + return 1; +} + +__setup("pnp_reserve_irq=", pnp_setup_reserve_irq); + +/* format is: pnp_reserve_dma=dma1[,dma2] .... */ + +static int __init pnp_setup_reserve_dma(char *str) +{ + int i; + + for (i = 0; i < 8; i++) + if (get_option(&str,&pnp_reserve_dma[i]) != 2) + break; + return 1; +} + +__setup("pnp_reserve_dma=", pnp_setup_reserve_dma); + +/* format is: pnp_reserve_io=io1,size1[,io2,size2] .... */ + +static int __init pnp_setup_reserve_io(char *str) +{ + int i; + + for (i = 0; i < 16; i++) + if (get_option(&str,&pnp_reserve_io[i]) != 2) + break; + return 1; +} + +__setup("pnp_reserve_io=", pnp_setup_reserve_io); + +/* format is: pnp_reserve_mem=mem1,size1[,mem2,size2] .... */ + +static int __init pnp_setup_reserve_mem(char *str) +{ + int i; + + for (i = 0; i < 16; i++) + if (get_option(&str,&pnp_reserve_mem[i]) != 2) + break; + return 1; +} + +__setup("pnp_reserve_mem=", pnp_setup_reserve_mem); diff --git a/drivers/pnp/support.c b/drivers/pnp/support.c new file mode 100644 index 000000000000..b952aec49189 --- /dev/null +++ b/drivers/pnp/support.c @@ -0,0 +1,40 @@ +/* + * support.c - provides standard pnp functions for the use of pnp protocol drivers, + * + * Copyright 2003 Adam Belay <ambx1@neo.rr.com> + * + */ + +#include <linux/config.h> +#include <linux/module.h> +#include <linux/ctype.h> + +#ifdef CONFIG_PNP_DEBUG + #define DEBUG +#else + #undef DEBUG +#endif + +#include <linux/pnp.h> +#include "base.h" + +/** + * pnp_is_active - Determines if a device is active based on its current resources + * @dev: pointer to the desired PnP device + * + */ + +int pnp_is_active(struct pnp_dev * dev) +{ + if (!pnp_port_start(dev, 0) && pnp_port_len(dev, 0) <= 1 && + !pnp_mem_start(dev, 0) && pnp_mem_len(dev, 0) <= 1 && + pnp_irq(dev, 0) == -1 && + pnp_dma(dev, 0) == -1) + return 0; + else + return 1; +} + + + +EXPORT_SYMBOL(pnp_is_active); diff --git a/drivers/pnp/system.c b/drivers/pnp/system.c new file mode 100644 index 000000000000..d42015c382af --- /dev/null +++ b/drivers/pnp/system.c @@ -0,0 +1,111 @@ +/* + * system.c - a driver for reserving pnp system resources + * + * Some code is based on pnpbios_core.c + * Copyright 2002 Adam Belay <ambx1@neo.rr.com> + * + */ + +#include <linux/pnp.h> +#include <linux/device.h> +#include <linux/init.h> +#include <linux/slab.h> +#include <linux/kernel.h> +#include <linux/ioport.h> + +static const struct pnp_device_id pnp_dev_table[] = { + /* General ID for reserving resources */ + { "PNP0c02", 0 }, + /* memory controller */ + { "PNP0c01", 0 }, + { "", 0 } +}; + +static void reserve_ioport_range(char *pnpid, int start, int end) +{ + struct resource *res; + char *regionid; + + regionid = kmalloc(16, GFP_KERNEL); + if ( regionid == NULL ) + return; + snprintf(regionid, 16, "pnp %s", pnpid); + res = request_region(start,end-start+1,regionid); + if ( res == NULL ) + kfree( regionid ); + else + res->flags &= ~IORESOURCE_BUSY; + /* + * Failures at this point are usually harmless. pci quirks for + * example do reserve stuff they know about too, so we may well + * have double reservations. + */ + printk(KERN_INFO + "pnp: %s: ioport range 0x%x-0x%x %s reserved\n", + pnpid, start, end, + NULL != res ? "has been" : "could not be" + ); + + return; +} + +static void reserve_resources_of_dev( struct pnp_dev *dev ) +{ + int i; + + for (i=0;i<PNP_MAX_PORT;i++) { + if (!pnp_port_valid(dev, i)) + /* end of resources */ + continue; + if (pnp_port_start(dev, i) == 0) + /* disabled */ + /* Do nothing */ + continue; + if (pnp_port_start(dev, i) < 0x100) + /* + * Below 0x100 is only standard PC hardware + * (pics, kbd, timer, dma, ...) + * We should not get resource conflicts there, + * and the kernel reserves these anyway + * (see arch/i386/kernel/setup.c). + * So, do nothing + */ + continue; + if (pnp_port_end(dev, i) < pnp_port_start(dev, i)) + /* invalid endpoint */ + /* Do nothing */ + continue; + reserve_ioport_range( + dev->dev.bus_id, + pnp_port_start(dev, i), + pnp_port_end(dev, i) + ); + } + + return; +} + +static int system_pnp_probe(struct pnp_dev * dev, const struct pnp_device_id *dev_id) +{ + reserve_resources_of_dev(dev); + return 0; +} + +static struct pnp_driver system_pnp_driver = { + .name = "system", + .id_table = pnp_dev_table, + .flags = PNP_DRIVER_RES_DO_NOT_CHANGE, + .probe = system_pnp_probe, + .remove = NULL, +}; + +static int __init pnp_system_init(void) +{ + return pnp_register_driver(&system_pnp_driver); +} + +/** + * Reserve motherboard resources after PCI claim BARs, + * but before PCI assign resources for uninitialized PCI devices + */ +fs_initcall(pnp_system_init); |