| Message ID | 20170807195713.10963-2-jonathan.derrick@intel.com (mailing list archive) |
|---|---|
| State | New, archived |
| Delegated to: | Bjorn Helgaas |
| Headers | show |
On 08/11/2017 11:03 AM, Bjorn Helgaas wrote: > On Mon, Aug 07, 2017 at 01:57:12PM -0600, Jon Derrick wrote: >> Generalize is_vmd behavior to remove dependency on domain number >> checking in pci quirks. >> >> Signed-off-by: Jon Derrick <jonathan.derrick@intel.com> >> --- >> arch/x86/include/asm/pci.h | 8 +++----- >> arch/x86/pci/common.c | 2 +- >> drivers/pci/quirks.c | 2 +- >> include/linux/pci.h | 4 ++++ >> 4 files changed, 9 insertions(+), 7 deletions(-) >> >> diff --git a/arch/x86/include/asm/pci.h b/arch/x86/include/asm/pci.h >> index 473a729..5c5d54a 100644 >> --- a/arch/x86/include/asm/pci.h >> +++ b/arch/x86/include/asm/pci.h >> @@ -60,16 +60,14 @@ static inline void *_pci_root_bus_fwnode(struct pci_bus *bus) >> #define pci_root_bus_fwnode _pci_root_bus_fwnode >> #endif >> >> -static inline bool is_vmd(struct pci_bus *bus) >> -{ >> #if IS_ENABLED(CONFIG_VMD) >> +static inline bool pci_bus_is_vmd(struct pci_bus *bus) >> +{ >> struct pci_sysdata *sd = bus->sysdata; >> >> return sd->vmd_domain; >> -#else >> - return false; >> -#endif >> } >> +#endif >> >> /* Can be used to override the logic in pci_scan_bus for skipping >> already-configured bus numbers - to be used for buggy BIOSes >> diff --git a/arch/x86/pci/common.c b/arch/x86/pci/common.c >> index dbe2132..18b2277 100644 >> --- a/arch/x86/pci/common.c >> +++ b/arch/x86/pci/common.c >> @@ -662,7 +662,7 @@ static void set_dma_domain_ops(struct pci_dev *pdev) {} >> >> static void set_dev_domain_options(struct pci_dev *pdev) >> { >> - if (is_vmd(pdev->bus)) >> + if (pci_bus_is_vmd(pdev->bus)) >> pdev->hotplug_user_indicators = 1; >> } >> >> diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c >> index 6967c6b..ba47995 100644 >> --- a/drivers/pci/quirks.c >> +++ b/drivers/pci/quirks.c >> @@ -4666,7 +4666,7 @@ DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x443, quirk_intel_qat_vf_cap); >> static void quirk_no_aersid(struct pci_dev *pdev) >> { >> /* VMD Domain */ >> - if (pdev->bus->sysdata && pci_domain_nr(pdev->bus) >= 0x10000) >> + if (pci_bus_is_vmd(pdev->bus)) > > I like this part ... > >> pdev->bus->bus_flags |= PCI_BUS_FLAGS_NO_AERSID; >> } >> DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x2030, quirk_no_aersid); >> diff --git a/include/linux/pci.h b/include/linux/pci.h >> index 4869e66..0299d8b 100644 >> --- a/include/linux/pci.h >> +++ b/include/linux/pci.h >> @@ -1471,6 +1471,10 @@ static inline int pci_proc_domain(struct pci_bus *bus) { return 0; } >> static inline int pci_get_new_domain_nr(void) { return -ENOSYS; } >> #endif /* CONFIG_PCI_DOMAINS */ >> >> +#if !IS_ENABLED(CONFIG_VMD) >> +static inline bool pci_bus_is_vmd(struct pci_bus *bus) { return false; } >> +#endif > > But not so much this part. VMD is (AFAIK) still fundamentally an > x86-only thing, so I'd like it better if this could all be within > arch/x86. Could this be done by moving quirk_no_aersid() to > arch/x86/pci/fixup.c? > Thanks for pointing this out. I'll think of something different and localize it to the x86 code domain. > BTW, CONFIG_VMD in drivers/pci/host/Kconfig is currently "depends on > SRCU". I'm not a Kconfig expert, but that doesn't seem like an > intuitive connection. And it's the only such dependency on SRCU in > the tree -- most other places use "select SRCU", which makes more > sense to me. I agree - most places use select SRCU. I'll add that to v2. > >> /* >> * Generic implementation for PCI domain support. If your >> * architecture does not need custom management of PCI >> -- >> 2.9.4 >>
On Mon, Aug 07, 2017 at 01:57:12PM -0600, Jon Derrick wrote: > Generalize is_vmd behavior to remove dependency on domain number > checking in pci quirks. > > Signed-off-by: Jon Derrick <jonathan.derrick@intel.com> > --- > arch/x86/include/asm/pci.h | 8 +++----- > arch/x86/pci/common.c | 2 +- > drivers/pci/quirks.c | 2 +- > include/linux/pci.h | 4 ++++ > 4 files changed, 9 insertions(+), 7 deletions(-) > > diff --git a/arch/x86/include/asm/pci.h b/arch/x86/include/asm/pci.h > index 473a729..5c5d54a 100644 > --- a/arch/x86/include/asm/pci.h > +++ b/arch/x86/include/asm/pci.h > @@ -60,16 +60,14 @@ static inline void *_pci_root_bus_fwnode(struct pci_bus *bus) > #define pci_root_bus_fwnode _pci_root_bus_fwnode > #endif > > -static inline bool is_vmd(struct pci_bus *bus) > -{ > #if IS_ENABLED(CONFIG_VMD) > +static inline bool pci_bus_is_vmd(struct pci_bus *bus) > +{ > struct pci_sysdata *sd = bus->sysdata; > > return sd->vmd_domain; > -#else > - return false; > -#endif > } > +#endif > > /* Can be used to override the logic in pci_scan_bus for skipping > already-configured bus numbers - to be used for buggy BIOSes > diff --git a/arch/x86/pci/common.c b/arch/x86/pci/common.c > index dbe2132..18b2277 100644 > --- a/arch/x86/pci/common.c > +++ b/arch/x86/pci/common.c > @@ -662,7 +662,7 @@ static void set_dma_domain_ops(struct pci_dev *pdev) {} > > static void set_dev_domain_options(struct pci_dev *pdev) > { > - if (is_vmd(pdev->bus)) > + if (pci_bus_is_vmd(pdev->bus)) > pdev->hotplug_user_indicators = 1; > } > > diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c > index 6967c6b..ba47995 100644 > --- a/drivers/pci/quirks.c > +++ b/drivers/pci/quirks.c > @@ -4666,7 +4666,7 @@ DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x443, quirk_intel_qat_vf_cap); > static void quirk_no_aersid(struct pci_dev *pdev) > { > /* VMD Domain */ > - if (pdev->bus->sysdata && pci_domain_nr(pdev->bus) >= 0x10000) > + if (pci_bus_is_vmd(pdev->bus)) I like this part ... > pdev->bus->bus_flags |= PCI_BUS_FLAGS_NO_AERSID; > } > DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x2030, quirk_no_aersid); > diff --git a/include/linux/pci.h b/include/linux/pci.h > index 4869e66..0299d8b 100644 > --- a/include/linux/pci.h > +++ b/include/linux/pci.h > @@ -1471,6 +1471,10 @@ static inline int pci_proc_domain(struct pci_bus *bus) { return 0; } > static inline int pci_get_new_domain_nr(void) { return -ENOSYS; } > #endif /* CONFIG_PCI_DOMAINS */ > > +#if !IS_ENABLED(CONFIG_VMD) > +static inline bool pci_bus_is_vmd(struct pci_bus *bus) { return false; } > +#endif But not so much this part. VMD is (AFAIK) still fundamentally an x86-only thing, so I'd like it better if this could all be within arch/x86. Could this be done by moving quirk_no_aersid() to arch/x86/pci/fixup.c? BTW, CONFIG_VMD in drivers/pci/host/Kconfig is currently "depends on SRCU". I'm not a Kconfig expert, but that doesn't seem like an intuitive connection. And it's the only such dependency on SRCU in the tree -- most other places use "select SRCU", which makes more sense to me. > /* > * Generic implementation for PCI domain support. If your > * architecture does not need custom management of PCI > -- > 2.9.4 >
diff --git a/arch/x86/include/asm/pci.h b/arch/x86/include/asm/pci.h index 473a729..5c5d54a 100644 --- a/arch/x86/include/asm/pci.h +++ b/arch/x86/include/asm/pci.h @@ -60,16 +60,14 @@ static inline void *_pci_root_bus_fwnode(struct pci_bus *bus) #define pci_root_bus_fwnode _pci_root_bus_fwnode #endif -static inline bool is_vmd(struct pci_bus *bus) -{ #if IS_ENABLED(CONFIG_VMD) +static inline bool pci_bus_is_vmd(struct pci_bus *bus) +{ struct pci_sysdata *sd = bus->sysdata; return sd->vmd_domain; -#else - return false; -#endif } +#endif /* Can be used to override the logic in pci_scan_bus for skipping already-configured bus numbers - to be used for buggy BIOSes diff --git a/arch/x86/pci/common.c b/arch/x86/pci/common.c index dbe2132..18b2277 100644 --- a/arch/x86/pci/common.c +++ b/arch/x86/pci/common.c @@ -662,7 +662,7 @@ static void set_dma_domain_ops(struct pci_dev *pdev) {} static void set_dev_domain_options(struct pci_dev *pdev) { - if (is_vmd(pdev->bus)) + if (pci_bus_is_vmd(pdev->bus)) pdev->hotplug_user_indicators = 1; } diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c index 6967c6b..ba47995 100644 --- a/drivers/pci/quirks.c +++ b/drivers/pci/quirks.c @@ -4666,7 +4666,7 @@ DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x443, quirk_intel_qat_vf_cap); static void quirk_no_aersid(struct pci_dev *pdev) { /* VMD Domain */ - if (pdev->bus->sysdata && pci_domain_nr(pdev->bus) >= 0x10000) + if (pci_bus_is_vmd(pdev->bus)) pdev->bus->bus_flags |= PCI_BUS_FLAGS_NO_AERSID; } DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x2030, quirk_no_aersid); diff --git a/include/linux/pci.h b/include/linux/pci.h index 4869e66..0299d8b 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -1471,6 +1471,10 @@ static inline int pci_proc_domain(struct pci_bus *bus) { return 0; } static inline int pci_get_new_domain_nr(void) { return -ENOSYS; } #endif /* CONFIG_PCI_DOMAINS */ +#if !IS_ENABLED(CONFIG_VMD) +static inline bool pci_bus_is_vmd(struct pci_bus *bus) { return false; } +#endif + /* * Generic implementation for PCI domain support. If your * architecture does not need custom management of PCI
Generalize is_vmd behavior to remove dependency on domain number checking in pci quirks. Signed-off-by: Jon Derrick <jonathan.derrick@intel.com> --- arch/x86/include/asm/pci.h | 8 +++----- arch/x86/pci/common.c | 2 +- drivers/pci/quirks.c | 2 +- include/linux/pci.h | 4 ++++ 4 files changed, 9 insertions(+), 7 deletions(-)