From 29cc9eda2021a87396ef31a6fc81daff6fd1be7a Mon Sep 17 00:00:00 2001 From: Myles Watson Date: Thu, 2 Jul 2009 18:56:24 +0000 Subject: 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 Acked-by: Ronald G. Minnich Acked-by: Patrick Georgi git-svn-id: svn://svn.coreboot.org/coreboot/trunk@4394 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1 --- src/include/device/device.h | 9 ++++----- src/include/device/resource.h | 15 ++++++++++----- 2 files changed, 14 insertions(+), 10 deletions(-) (limited to 'src/include') diff --git a/src/include/device/device.h b/src/include/device/device.h index 22d6c71829..1990454d6a 100644 --- a/src/include/device/device.h +++ b/src/include/device/device.h @@ -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); 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 @@ -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 */ -- cgit v1.2.3