Re: [Xen-devel] [PATCH v8 3/4] pci: add wrapper for parse_pci

[Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>]

On Tue, Jun 30, 2015 at 07:34:01PM -0400, elena.ufimtseva@xxxxxxxxxx wrote:
> From: Elena Ufimtseva <elena.ufimtseva@xxxxxxxxxx>
> 
> For sbdf'si parsing in rmrr command line add __parse_pci with addtional

sbdf'si ?

s/rmrr/RMRR/

s/addtional/additional/


> parameter def_seg. __parse_pci will help to identify if segment was
> found
> in string being parsed or default segment was used.
> Make a wrapper parse_pci so the rest of the callers are not affected.
> 
> Signed-off-by: Elena Ufimtseva <elena.ufimtseva@xxxxxxxxxx>
> Acked-by: Jan Beulich <jbeulich@xxxxxxxx>
> ---
>  xen/drivers/pci/pci.c | 11 +++++++++++
>  xen/include/xen/pci.h |  3 +++
>  2 files changed, 14 insertions(+)
> 
> diff --git a/xen/drivers/pci/pci.c b/xen/drivers/pci/pci.c
> index ca07ed0..788a356 100644
> --- a/xen/drivers/pci/pci.c
> +++ b/xen/drivers/pci/pci.c
> @@ -119,11 +119,21 @@ const char *__init parse_pci(const char *s, unsigned 
> int *seg_p,
>                               unsigned int *bus_p, unsigned int *dev_p,
>                               unsigned int *func_p)
>  {
> +    bool_t def_seg;
> +
> +    return __parse_pci(s, seg_p, bus_p, dev_p, func_p, &def_seg);
> +}
> +
> +const char *__init __parse_pci(const char *s, unsigned int *seg_p,
> +                             unsigned int *bus_p, unsigned int *dev_p,
> +                             unsigned int *func_p, bool_t *def_seg)
> +{
>      unsigned long seg = simple_strtoul(s, &s, 16), bus, dev, func;
>  
>      if ( *s != ':' )
>          return NULL;
>      bus = simple_strtoul(s + 1, &s, 16);
> +    *def_seg = 0;
>      if ( *s == ':' )
>          dev = simple_strtoul(s + 1, &s, 16);
>      else
> @@ -131,6 +141,7 @@ const char *__init parse_pci(const char *s, unsigned int 
> *seg_p,
>          dev = bus;
>          bus = seg;
>          seg = 0;
> +        *def_seg = 1;
>      }
>      if ( func_p )
>      {
> diff --git a/xen/include/xen/pci.h b/xen/include/xen/pci.h
> index 414106a..d66ecab 100644
> --- a/xen/include/xen/pci.h
> +++ b/xen/include/xen/pci.h
> @@ -150,6 +150,9 @@ int pci_find_ext_capability(int seg, int bus, int devfn, 
> int cap);
>  int pci_find_next_ext_capability(int seg, int bus, int devfn, int pos, int 
> cap);
>  const char *parse_pci(const char *, unsigned int *seg, unsigned int *bus,
>                        unsigned int *dev, unsigned int *func);
> +const char *__parse_pci(const char *, unsigned int *seg, unsigned int *bus,
> +                      unsigned int *dev, unsigned int *func, bool_t 
> *def_seg);
> +
>  
>  bool_t pcie_aer_get_firmware_first(const struct pci_dev *);
>  
> -- 
> 2.1.3
> 

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