[Skiboot] [PATCH 1/4] core/pci: Use cached vendor/device IDs in quirks

[Benjamin Herrenschmidt]

On Fri, 2017-04-07 at 10:16 +1000, Gavin Shan wrote:
> The PCI device vendor/device IDs have been cached to pd->vdid, no
> need to pass them in pci_handle_quirk(). This also introduces two
> macros to extract vendor/device fields and they are useful afterwards.
> No logical changes introduced.
> 
> Signed-off-by: Gavin Shan <gwshan at linux.vnet.ibm.com>

Acked-by: Benjamin Herrenschmidt <benh at kernel.crashing.org>

> ---
>  core/pci-quirk.c    | 9 +++------
>  core/pci.c          | 2 +-
>  include/pci-quirk.h | 5 +----
>  include/pci.h       | 2 ++
>  4 files changed, 7 insertions(+), 11 deletions(-)
> 
> diff --git a/core/pci-quirk.c b/core/pci-quirk.c
> index 383d92c..0153bdb 100644
> --- a/core/pci-quirk.c
> +++ b/core/pci-quirk.c
> @@ -70,17 +70,14 @@ static const struct pci_quirk quirk_table[] = {
>  	{NULL}
>  };
>  
> -void pci_handle_quirk(struct phb *phb,
> -		      struct pci_device *pd,
> -		      uint16_t vendor_id,
> -		      uint16_t device_id)
> +void pci_handle_quirk(struct phb *phb, struct pci_device *pd)
>  {
>  	const struct pci_quirk *quirks = quirk_table;
>  
>  	while (quirks->vendor_id) {
> -		if (vendor_id == quirks->vendor_id &&
> +		if (quirks->vendor_id == PCI_VENDOR_ID(pd->vdid) &&
>  		    (quirks->device_id == PCI_ANY_ID ||
> -		     device_id == quirks->device_id))
> +		     quirks->device_id == PCI_DEVICE_ID(pd->vdid)))
>  			quirks->fixup(phb, pd);
>  		quirks++;
>  	}
> diff --git a/core/pci.c b/core/pci.c
> index a8b4b69..a93239b 100644
> --- a/core/pci.c
> +++ b/core/pci.c
> @@ -1450,7 +1450,7 @@ static void pci_add_one_device_node(struct phb *phb,
>  	if (intpin)
>  		dt_add_property_cells(np, "interrupts", intpin);
>  
> -	pci_handle_quirk(phb, pd, vdid & 0xffff, vdid >> 16);
> +	pci_handle_quirk(phb, pd);
>  
>  	/* XXX FIXME: Add a few missing ones such as
>  	 *
> diff --git a/include/pci-quirk.h b/include/pci-quirk.h
> index c766973..1883248 100644
> --- a/include/pci-quirk.h
> +++ b/include/pci-quirk.h
> @@ -27,9 +27,6 @@ struct pci_quirk {
>  	uint16_t device_id;
>  };
>  
> -void pci_handle_quirk(struct phb *phb,
> -		      struct pci_device *pd,
> -		      uint16_t vendor_id,
> -		      uint16_t device_id);
> +void pci_handle_quirk(struct phb *phb, struct pci_device *pd);
>  
>  #endif /* __PCI_QUIRK_H */
> diff --git a/include/pci.h b/include/pci.h
> index dc418a9..296fb8d 100644
> --- a/include/pci.h
> +++ b/include/pci.h
> @@ -72,6 +72,8 @@ struct pci_device {
>  
>  	uint32_t		vdid;
>  	uint32_t		sub_vdid;
> +#define PCI_VENDOR_ID(x)	((x) & 0xFFFF)
> +#define PCI_DEVICE_ID(x)	((x) >> 8)
>  	uint32_t		class;
>  	uint64_t		cap_list;
>  	struct {