From 6fb3b72e8745073465b4a5875b7750cc43cbd1af Mon Sep 17 00:00:00 2001 From: Simon Glass Date: Wed, 12 Nov 2014 22:42:14 -0700 Subject: x86: pci: Allow configuration before relocation Add simple PCI access routines for x86 which permit use before relocation. The normal PCI stack is still used, but for pre-relocation use there can only ever be a single hose. After relocation, fall back to the normal access, although even then on x86 machines there is normally only a single PCI bus. Signed-off-by: Simon Glass --- arch/x86/include/asm/pci.h | 13 +++++++++++++ 1 file changed, 13 insertions(+) (limited to 'arch/x86/include') diff --git a/arch/x86/include/asm/pci.h b/arch/x86/include/asm/pci.h index 6e70a99..98817aa 100644 --- a/arch/x86/include/asm/pci.h +++ b/arch/x86/include/asm/pci.h @@ -33,4 +33,17 @@ void board_pci_setup_hose(struct pci_controller *hose); * later use, but will become invalid one DRAM is available. */ int pci_early_init_hose(struct pci_controller **hosep); + +/* + * Simple PCI access routines - these work from either the early PCI hose + * or the 'real' one, created after U-Boot has memory available + */ +unsigned int pci_read_config8(pci_dev_t dev, unsigned where); +unsigned int pci_read_config16(pci_dev_t dev, unsigned where); +unsigned int pci_read_config32(pci_dev_t dev, unsigned where); + +void pci_write_config8(pci_dev_t dev, unsigned where, unsigned value); +void pci_write_config16(pci_dev_t dev, unsigned where, unsigned value); +void pci_write_config32(pci_dev_t dev, unsigned where, unsigned value); + #endif -- cgit v1.1