| Message ID | d780e72d7a0992c891f6787aa517f8f090cb54d9.1520188299.git.jan.kiszka@siemens.com (mailing list archive) |
|---|---|
| State | New, archived |
| Delegated to: | Bjorn Helgaas |
| Headers | show |
On Sun, Mar 4, 2018 at 8:31 PM, Jan Kiszka <jan.kiszka@siemens.com> wrote: > From: Otavio Pontes <otavio.pontes@intel.com> > > Use the PCI mmconfig base address exported by jailhouse in boot > parameters in order to access the memory mapped PCI configuration space. > FWIW, Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> > Signed-off-by: Otavio Pontes <otavio.pontes@intel.com> > [Jan: rebased, fixed !CONFIG_PCI_MMCONFIG, used pcibios_last_bus] > Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> > --- > arch/x86/include/asm/pci_x86.h | 2 ++ > arch/x86/kernel/jailhouse.c | 8 ++++++++ > arch/x86/pci/mmconfig-shared.c | 4 ++-- > 3 files changed, 12 insertions(+), 2 deletions(-) > > diff --git a/arch/x86/include/asm/pci_x86.h b/arch/x86/include/asm/pci_x86.h > index eb66fa9cd0fc..959d618dbb17 100644 > --- a/arch/x86/include/asm/pci_x86.h > +++ b/arch/x86/include/asm/pci_x86.h > @@ -151,6 +151,8 @@ extern int pci_mmconfig_insert(struct device *dev, u16 seg, u8 start, u8 end, > phys_addr_t addr); > extern int pci_mmconfig_delete(u16 seg, u8 start, u8 end); > extern struct pci_mmcfg_region *pci_mmconfig_lookup(int segment, int bus); > +extern struct pci_mmcfg_region *__init pci_mmconfig_add(int segment, int start, > + int end, u64 addr); > > extern struct list_head pci_mmcfg_list; > > diff --git a/arch/x86/kernel/jailhouse.c b/arch/x86/kernel/jailhouse.c > index b68fd895235a..fa183a131edc 100644 > --- a/arch/x86/kernel/jailhouse.c > +++ b/arch/x86/kernel/jailhouse.c > @@ -124,6 +124,14 @@ static int __init jailhouse_pci_arch_init(void) > if (pcibios_last_bus < 0) > pcibios_last_bus = 0xff; > > +#ifdef CONFIG_PCI_MMCONFIG > + if (setup_data.pci_mmconfig_base) { > + pci_mmconfig_add(0, 0, pcibios_last_bus, > + setup_data.pci_mmconfig_base); > + pci_mmcfg_arch_init(); > + } > +#endif > + > return 0; > } > > diff --git a/arch/x86/pci/mmconfig-shared.c b/arch/x86/pci/mmconfig-shared.c > index 96684d0adcf9..0e590272366b 100644 > --- a/arch/x86/pci/mmconfig-shared.c > +++ b/arch/x86/pci/mmconfig-shared.c > @@ -94,8 +94,8 @@ static struct pci_mmcfg_region *pci_mmconfig_alloc(int segment, int start, > return new; > } > > -static struct pci_mmcfg_region *__init pci_mmconfig_add(int segment, int start, > - int end, u64 addr) > +struct pci_mmcfg_region *__init pci_mmconfig_add(int segment, int start, > + int end, u64 addr) > { > struct pci_mmcfg_region *new; > > -- > 2.13.6 >
diff --git a/arch/x86/include/asm/pci_x86.h b/arch/x86/include/asm/pci_x86.h index eb66fa9cd0fc..959d618dbb17 100644 --- a/arch/x86/include/asm/pci_x86.h +++ b/arch/x86/include/asm/pci_x86.h @@ -151,6 +151,8 @@ extern int pci_mmconfig_insert(struct device *dev, u16 seg, u8 start, u8 end, phys_addr_t addr); extern int pci_mmconfig_delete(u16 seg, u8 start, u8 end); extern struct pci_mmcfg_region *pci_mmconfig_lookup(int segment, int bus); +extern struct pci_mmcfg_region *__init pci_mmconfig_add(int segment, int start, + int end, u64 addr); extern struct list_head pci_mmcfg_list; diff --git a/arch/x86/kernel/jailhouse.c b/arch/x86/kernel/jailhouse.c index b68fd895235a..fa183a131edc 100644 --- a/arch/x86/kernel/jailhouse.c +++ b/arch/x86/kernel/jailhouse.c @@ -124,6 +124,14 @@ static int __init jailhouse_pci_arch_init(void) if (pcibios_last_bus < 0) pcibios_last_bus = 0xff; +#ifdef CONFIG_PCI_MMCONFIG + if (setup_data.pci_mmconfig_base) { + pci_mmconfig_add(0, 0, pcibios_last_bus, + setup_data.pci_mmconfig_base); + pci_mmcfg_arch_init(); + } +#endif + return 0; } diff --git a/arch/x86/pci/mmconfig-shared.c b/arch/x86/pci/mmconfig-shared.c index 96684d0adcf9..0e590272366b 100644 --- a/arch/x86/pci/mmconfig-shared.c +++ b/arch/x86/pci/mmconfig-shared.c @@ -94,8 +94,8 @@ static struct pci_mmcfg_region *pci_mmconfig_alloc(int segment, int start, return new; } -static struct pci_mmcfg_region *__init pci_mmconfig_add(int segment, int start, - int end, u64 addr) +struct pci_mmcfg_region *__init pci_mmconfig_add(int segment, int start, + int end, u64 addr) { struct pci_mmcfg_region *new;