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Move the v3 resource allocator to v2.

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Major changes:
1. Separate resource allocation into:
	A. Read Resources
	B. Avoid fixed resources (constrain limits)
	C. Allocate resources
	D. Set resources

Usage notes:
Resources which have IORESOURCE_FIXED set in the flags constrain the placement
of other resources.  All fixed resources will end up outside (above or below) 
the allocated resources.

Domains usually start with base = 0 and limit = 2^address_bits - 1.

I've added an IOAPIC to all platforms so that the old limit of 0xfec00000 is
still there for resources.  Some platforms may want to change that, but I didn't
want to break anyone's board.

Resources are allocated in a single block for memory and another for I/O.
Currently the resource allocator doesn't support holes.

Signed-off-by: Myles Watson <mylesgw@gmail.com>
Acked-by: Ronald G. Minnich <rminnich@gmail.com>
Acked-by: Patrick Georgi <patrick.georgi@coresystems.de>


git-svn-id: svn://svn.coreboot.org/coreboot/trunk@4394 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
This commit is contained in:
Myles Watson 2009-07-02 18:56:24 +00:00
commit 29cc9eda20
62 changed files with 1510 additions and 1593 deletions
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9
src/include/device/device.h
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@ -69,17 +69,16 @@ struct device {
unsigned int hdr_type; /* PCI header type */
unsigned int enabled : 1; /* set if we should enable the device */
unsigned int initialized : 1; /* set if we have initialized the device */
unsigned int have_resources : 1; /* Set if we have read the devices resources */
unsigned int on_mainboard : 1;
unsigned long rom_address;
uint8_t command;
u8 command;
/* Base registers for this device. I/O, MEM and Expansion ROM */
struct resource resource[MAX_RESOURCES];
unsigned int resources;
/* link are (down stream) buses attached to the device, usually a leaf
/* links are (downstream) buses attached to the device, usually a leaf
* device with no children have 0 buses attached and a bridge has 1 bus
*/
struct bus link[MAX_LINKS];
@ -106,8 +105,6 @@ void dev_optimize(void);
/* Generic device helper functions */
int reset_bus(struct bus *bus);
unsigned int scan_bus(struct device *bus, unsigned int max);
void compute_allocate_resource(struct bus *bus, struct resource *bridge,
unsigned long type_mask, unsigned long type);
void assign_resources(struct bus *bus);
void enable_resources(struct device *dev);
void enumerate_static_device(void);
@ -142,6 +139,8 @@ void show_all_devs_resources(int debug_level, const char* msg);
#define DEVICE_MEM_ALIGN 4096
extern struct device_operations default_dev_ops_root;
void pci_domain_read_resources(struct device *dev);
unsigned int pci_domain_scan_bus(struct device *dev, unsigned int max);
void root_dev_read_resources(device_t dev);
void root_dev_set_resources(device_t dev);
unsigned int scan_static_bus(device_t bus, unsigned int max);