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device/pci_early.c: Mixes up variants of a typedefs to 'u32' 

Unfortunately coreboot has to deal with ROMCC's short comings which has
lead to a little bit of confusion due to typedefs. Essentially, coreboot
defines four typedefs:

 * 'typedef struct device * device_t' in ramstage not in SIMPLE_DEVICE mode
 * 'typedef u32 device_t' in romstage or when SIMPLE_DEVICE is defined
 * 'typedef u32 pnp_devfn_t'
 * 'typedef u32 pci_devfn_t'

Some early functions make use of 'device_t' over 'pci_devfn_t' and since
the C type-checker does not enforce typedefs to the same type 'u32'
these are never noticed. Fix these so that 'device_t' does not conflict
in romstage for later work. We later plan to have 'pnp_devfn_t' and
'pci_devfn_t' as the only variants of 'u32' and 'device_t' to be a
struct pointer type exclusively.

Change-Id: I948801f5be968a934798f1bad7722649758cd4d3
Signed-off-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
Reviewed-on: http://review.coreboot.org/6225
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
This commit is contained in:
Edward O'Callaghan 2014-07-09 04:55:16 +10:00
parent b666793925
commit c2956e7752
2 changed files with 9 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
src/device/pci_early.c
View File

@ -25,8 +25,7 @@
#include <delay.h>
#ifdef __PRE_RAM__
unsigned pci_find_next_capability(device_t dev, unsigned cap, unsigned last)
unsigned pci_find_next_capability(pci_devfn_t dev, unsigned cap, unsigned last)
{
unsigned pos = 0;
u16 status;
@ -69,11 +68,11 @@ unsigned pci_find_next_capability(device_t dev, unsigned cap, unsigned last)
return 0;
}
unsigned pci_find_capability(device_t dev, unsigned cap)
unsigned pci_find_capability(pci_devfn_t dev, unsigned cap)
{
return pci_find_next_capability(dev, cap, 0);
}
#endif
#endif /* __PRE_RAM__ */
#if CONFIG_EARLY_PCI_BRIDGE

6
src/include/device/pci.h
View File

@ -102,8 +102,14 @@ static inline const struct pci_operations *ops_pci(device_t dev)
#endif /* ! __SIMPLE_DEVICE__ */
#ifdef __PRE_RAM__
unsigned pci_find_next_capability(pci_devfn_t dev, unsigned cap, unsigned last);
unsigned pci_find_capability(pci_devfn_t dev, unsigned cap);
#else /* !__PRE_RAM__ */
unsigned pci_find_next_capability(device_t dev, unsigned cap, unsigned last);
unsigned pci_find_capability(device_t dev, unsigned cap);
#endif /* __PRE_RAM__ */
void pci_early_bridge_init(void);
int pci_early_device_probe(u8 bus, u8 dev, u32 mmio_base);