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powerpc/eeh: Add bdfn field to eeh_dev

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Preparation for removing pci_dn from the powernv EEH code. The only
thing we really use pci_dn for is to get the bdfn of the device for
config space accesses, so adding that information to eeh_dev reduces
the need to carry around the pci_dn.

Signed-off-by: Oliver O'Halloran <oohall@gmail.com>
[SB: Re-wrapped commit message, fixed whitespace damage.]
Signed-off-by: Sam Bobroff <sbobroff@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/e458eb69a1f591d8a120782f23a8506b15d3c654.1565930772.git.sbobroff@linux.ibm.com
This commit is contained in:
Oliver O'Halloran 2019-08-16 14:48:11 +10:00 committed by Michael Ellerman
parent c44e4ccada
commit 7c33a994d3
3 changed files with 6 additions and 0 deletions
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2
arch/powerpc/include/asm/eeh.h
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@ -121,6 +121,8 @@ static inline bool eeh_pe_passed(struct eeh_pe *pe)
struct eeh_dev {
int mode; /* EEH mode */
int class_code; /* Class code of the device */
int bdfn; /* bdfn of device (for cfg ops) */
struct pci_controller *controller;
int pe_config_addr; /* PE config address */
u32 config_space[16]; /* Saved PCI config space */
int pcix_cap; /* Saved PCIx capability */

2
arch/powerpc/include/asm/ppc-pci.h
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@ -74,6 +74,8 @@ static inline const char *eeh_driver_name(struct pci_dev *pdev)
#endif /* CONFIG_EEH */
#define PCI_BUSNO(bdfn) ((bdfn >> 8) & 0xff)
#else /* CONFIG_PCI */
static inline void init_pci_config_tokens(void) { }
#endif /* !CONFIG_PCI */

2
arch/powerpc/kernel/eeh_dev.c
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@ -47,6 +47,8 @@ struct eeh_dev *eeh_dev_init(struct pci_dn *pdn)
/* Associate EEH device with OF node */
pdn->edev = edev;
edev->pdn = pdn;
edev->bdfn = (pdn->busno << 8) | pdn->devfn;
edev->controller = pdn->phb;
return edev;
}