diff options
| author | Myles Watson <mylesgw@gmail.com> | 2009-07-02 18:56:24 +0000 |
|---|---|---|
| committer | Myles Watson <mylesgw@gmail.com> | 2009-07-02 18:56:24 +0000 |
| commit | 29cc9eda2021a87396ef31a6fc81daff6fd1be7a (patch) | |
| tree | d3dfa07ca85547c77c5d07825fc8afcc19489076 /src/include/device/resource.h | |
| parent | 2468331952bae0abdc4d76dbe6cf26f05b7825e5 (diff) | |
Move the v3 resource allocator to v2.
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
Diffstat (limited to 'src/include/device/resource.h')
| -rw-r--r-- | src/include/device/resource.h | 15 |
1 files changed, 10 insertions, 5 deletions
diff --git a/src/include/device/resource.h b/src/include/device/resource.h index 902cf686c9..5452d4360c 100644 --- a/src/include/device/resource.h +++ b/src/include/device/resource.h @@ -1,5 +1,5 @@ -#ifndef RESOURCE_H -#define RESOURCE_H +#ifndef DEVICE_RESOURCE_H +#define DEVICE_RESOURCE_H #include <stdint.h> @@ -19,6 +19,7 @@ #define IORESOURCE_SUBTRACTIVE 0x00040000 /* This resource filters all of the unclaimed transactions * to the bus below. */ +#define IORESOURCE_BRIDGE 0x00080000 /* The IO resource has a bus below it. */ #define IORESOURCE_STORED 0x20000000 /* The IO resource assignment has been stored in the device */ #define IORESOURCE_ASSIGNED 0x40000000 /* An IO resource that has been assigned a value */ #define IORESOURCE_FIXED 0x80000000 /* An IO resource the allocator must not change */ @@ -62,7 +63,7 @@ #define IORESOURCE_MEM_EXPANSIONROM (1<<6) -typedef uint64_t resource_t; +typedef u64 resource_t; struct resource { resource_t base; /* Base address of the resource */ resource_t size; /* Size of the resource */ @@ -74,10 +75,14 @@ struct resource { /* Alignment must be >= the granularity of the resource */ }; -/* Macros to generate index values for subtractive resources */ +/* Macros to generate index values for resources */ #define IOINDEX_SUBTRACTIVE(IDX,LINK) (0x10000000 + ((IDX) << 8) + LINK) #define IOINDEX_SUBTRACTIVE_LINK(IDX) (IDX & 0xff) +#define IOINDEX(IDX,LINK) (((LINK) << 16) + IDX) +#define IOINDEX_LINK(IDX) (( IDX & 0xf0000) >> 16) +#define IOINDEX_IDX(IDX) (IDX & 0xffff) + /* Generic resource helper functions */ struct device; struct bus; @@ -101,4 +106,4 @@ extern void search_global_resources( #define RESOURCE_TYPE_MAX 20 extern const char *resource_type(struct resource *resource); -#endif /* RESOURCE_H */ +#endif /* DEVICE_RESOURCE_H */ |