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With a bug fix from peter and a suggest change by Carl-Daniel

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Resource map and a way to use the pci config stuff from stage 1, done in 
a way that will work in stage 2 (but only for systems that use type 1
config cycles; will fail for type MEM config cycles). 

We need to rethink the PCI config stuff per Stepan's comment, in part 
because the device tree now includes things that are NOT PCI devices. 
Stepan's suggestion, to make the functions take busdevfn as the 
parameter, makes a lot of sense. 

Signed-off-by: Ronald G. Minnich <rminnich@gmail.com>
Acked-by: Peter Stuge <peter@stuge.s


git-svn-id: svn://coreboot.org/repository/coreboot-v3@720 f3766cd6-281f-0410-b1cd-43a5c92072e9
This commit is contained in:
Ronald G. Minnich 2008-08-05 01:19:37 +00:00
commit 54b7a9609f
3 changed files with 338 additions and 199 deletions
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45
include/arch/x86/cpu.h
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@ -206,4 +206,49 @@ SHARED(bottom_of_stack, void *, void);
#define PRINTK_BUF_ADDR_RAM 0x90000
#endif
/* resource maps. These started out as special for the K8 but now have more general usage */
/* it's not totally clear that the type and union are a great idea, but see the v2 code:
* there are tables that are combinations of all three (or the code supports it anyway)
*/
/* types of resource maps */
#define PCIRM 'p'
#define IO8 '8'
#define IO32 'I'
/* pci config map */
struct pcm {
u8 bus, dev, fn, reg;
u32 and;
u32 or;
};
struct io8 {
u16 port;
u8 and, or;
};
struct io32 {
u16 port;
u32 and, or;
};
/* convenience initializer */
#define PCM(abus,adev,afn,areg,aand,aor) {.type = PCIRM, {.pcm ={.bus=abus,.dev=adev,.fn=afn,.reg=areg,.and=aand,.or=aor}}}
#define EIO8(aport, aand, aor) {.type=IO8, {.io8 = {.port = aport, .and = aand, .or = aor}}}
#define EIO32(aport, aand, aaor) {.type = IO32, {.io32 = {.port = aport, .and = aand, .or = aor}}}
struct rmap {
int type;
union {
struct pcm pcm;
struct io8 io8;
struct io32 io32;
};
};
void setup_resource_map_x_offset(const struct rmap *rm, u32 max,
u32 offset_dev, u32 offset_pciio,
u32 offset_io);
void setup_resource_map(const struct rmap *rm, u32 max);
#endif /* ARCH_X86_CPU_H */