From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sat, 16 Apr 2005 15:20:36 -0700 Subject: Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip! --- drivers/pnp/system.c | 111 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 111 insertions(+) create mode 100644 drivers/pnp/system.c (limited to 'drivers/pnp/system.c') 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 + * + */ + +#include +#include +#include +#include +#include +#include + +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;idev.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); -- cgit v1.2.3