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| Started by | Hanjun Guo <hanjun.guo@linaro.org> |
|---|---|
| First post | 2016-01-15 11:00 +0100 |
| Last post | 2016-01-18 11:00 +0100 |
| Articles | 2 — 2 participants |
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Re: [PATCH V3 19/21] pci, acpi: Support for ACPI based generic PCI host controller init Hanjun Guo <hanjun.guo@linaro.org> - 2016-01-15 11:00 +0100
Re: [PATCH V3 19/21] pci, acpi: Support for ACPI based generic PCI host controller init Tomasz Nowicki <tn@semihalf.com> - 2016-01-18 11:00 +0100
| From | Hanjun Guo <hanjun.guo@linaro.org> |
|---|---|
| Date | 2016-01-15 11:00 +0100 |
| Subject | Re: [PATCH V3 19/21] pci, acpi: Support for ACPI based generic PCI host controller init |
| Message-ID | <qR9kJ-4iA-7@gated-at.bofh.it> |
Hi Tomasz, On 2016/1/13 21:21, Tomasz Nowicki wrote: > Because of two patch series: > 1. Jiang Liu's common interface to support PCI host controller init > 2. MMCONFIG refactoring (part of this patch set) > now we can think about generic ACPI based PCI host controller init > implementation out of arch/ directory. > > These calls use information from MCFG table (PCI config space regions) > and _CRS method (IO/irq resources) to initialize PCI hostbridge. > > TBD: We are still not sure whether we should reassign resources > after PCI bus enumeration or trust firmware to do all that work for > us properly. > > Signed-off-by: Tomasz Nowicki <tn@semihalf.com> > Signed-off-by: Hanjun Guo <hanjun.guo@linaro.org> > Signed-off-by: Suravee Suthikulpanit <Suravee.Suthikulpanit@amd.com> > CC: Arnd Bergmann <arnd@arndb.de> > CC: Catalin Marinas <catalin.marinas@arm.com> > CC: Liviu Dudau <Liviu.Dudau@arm.com> > CC: Lorenzo Pieralisi <Lorenzo.Pieralisi@arm.com> > CC: Will Deacon <will.deacon@arm.com> > Tested-by: Suravee Suthikulpanit <Suravee.Suthikulpanit@amd.com> > Tested-by: Jeremy Linton <jeremy.linton@arm.com> > --- > drivers/acpi/Kconfig | 5 ++ > drivers/acpi/pci_root.c | 131 ++++++++++++++++++++++++++++++++++++++++++++++++ > 2 files changed, 136 insertions(+) > > diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig > index c3664be..e315061 100644 > --- a/drivers/acpi/Kconfig > +++ b/drivers/acpi/Kconfig > @@ -335,6 +335,11 @@ config ACPI_PCI_SLOT > i.e., segment/bus/device/function tuples, with physical slots in > the system. If you are unsure, say N. > > +config ACPI_PCI_HOST_GENERIC > + bool "Generic ACPI PCI host controller" > + help > + Say Y here if you want to support generic ACPI PCI host controller. Since x86 and IA64 will not use ACPI_PCI_HOST_GENERIC in this patch, it should be defined as config ACPI_PCI_HOST_GENERIC bool and select for ARCHs, or will default y on x86 and IA64 too. Compiling the kernel on a IA64 machine, will send out the result when it's ready. Thanks Hanjun
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| From | Tomasz Nowicki <tn@semihalf.com> |
|---|---|
| Date | 2016-01-18 11:00 +0100 |
| Message-ID | <qSeLp-7gM-29@gated-at.bofh.it> |
| In reply to | #1310004 |
On 15.01.2016 10:57, Hanjun Guo wrote: > Hi Tomasz, > > On 2016/1/13 21:21, Tomasz Nowicki wrote: >> Because of two patch series: >> 1. Jiang Liu's common interface to support PCI host controller init >> 2. MMCONFIG refactoring (part of this patch set) >> now we can think about generic ACPI based PCI host controller init >> implementation out of arch/ directory. >> >> These calls use information from MCFG table (PCI config space regions) >> and _CRS method (IO/irq resources) to initialize PCI hostbridge. >> >> TBD: We are still not sure whether we should reassign resources >> after PCI bus enumeration or trust firmware to do all that work for >> us properly. >> >> Signed-off-by: Tomasz Nowicki <tn@semihalf.com> >> Signed-off-by: Hanjun Guo <hanjun.guo@linaro.org> >> Signed-off-by: Suravee Suthikulpanit <Suravee.Suthikulpanit@amd.com> >> CC: Arnd Bergmann <arnd@arndb.de> >> CC: Catalin Marinas <catalin.marinas@arm.com> >> CC: Liviu Dudau <Liviu.Dudau@arm.com> >> CC: Lorenzo Pieralisi <Lorenzo.Pieralisi@arm.com> >> CC: Will Deacon <will.deacon@arm.com> >> Tested-by: Suravee Suthikulpanit <Suravee.Suthikulpanit@amd.com> >> Tested-by: Jeremy Linton <jeremy.linton@arm.com> >> --- >> drivers/acpi/Kconfig | 5 ++ >> drivers/acpi/pci_root.c | 131 >> ++++++++++++++++++++++++++++++++++++++++++++++++ >> 2 files changed, 136 insertions(+) >> >> diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig >> index c3664be..e315061 100644 >> --- a/drivers/acpi/Kconfig >> +++ b/drivers/acpi/Kconfig >> @@ -335,6 +335,11 @@ config ACPI_PCI_SLOT >> i.e., segment/bus/device/function tuples, with physical slots in >> the system. If you are unsure, say N. >> >> +config ACPI_PCI_HOST_GENERIC >> + bool "Generic ACPI PCI host controller" >> + help >> + Say Y here if you want to support generic ACPI PCI host >> controller. > > Since x86 and IA64 will not use ACPI_PCI_HOST_GENERIC in this > patch, it should be defined as > > config ACPI_PCI_HOST_GENERIC > bool > > and select for ARCHs, or will default y on x86 and IA64 too. Right, I will fix that in v4. > > Compiling the kernel on a IA64 machine, will send out the > result when it's ready. > Thanks, Tomasz
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