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| author | Yijing Wang <wangyijing@huawei.com> | 2014-10-27 10:48:40 +0300 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2014-11-21 19:32:29 +0300 |
| commit | 49dcc01a9ff2df5fafe50777bec0591c0a588d27 (patch) | |
| tree | e5db4bf85123ef21c56cc0adc44ba7c3617c7971 /arch/arm/include/asm/mach | |
| parent | 262a2baf9e4a2fcedb6645ca98d77a1c12303a1d (diff) | |
| download | linux-49dcc01a9ff2df5fafe50777bec0591c0a588d27.tar.xz | |
ARM/PCI: Save MSI controller in pci_sys_data
Currently ARM associates an MSI controller with a PCI bus by defining
pcibios_add_bus() and using it to call a struct hw_pci.add_bus() method.
That method sets the struct pci_bus "msi" member. That's unwieldy and
unnecessarily couples MSI with the PCI enumeration code.
On ARM, all devices under the same PCI host bridge share an MSI controller,
so add an msi_controller pointer to the struct pci_sys_data and implement
pcibios_msi_controller() to retrieve it.
This is a step toward moving the msi_controller pointer into the generic
struct pci_host_bridge.
[bhelgaas: changelog, take pci_dev instead of pci_bus]
Signed-off-by: Yijing Wang <wangyijing@huawei.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Diffstat (limited to 'arch/arm/include/asm/mach')
| -rw-r--r-- | arch/arm/include/asm/mach/pci.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/arm/include/asm/mach/pci.h b/arch/arm/include/asm/mach/pci.h index 7fc42784becb..8144d61e5693 100644 --- a/arch/arm/include/asm/mach/pci.h +++ b/arch/arm/include/asm/mach/pci.h @@ -22,6 +22,9 @@ struct hw_pci { #ifdef CONFIG_PCI_DOMAINS int domain; #endif +#ifdef CONFIG_PCI_MSI + struct msi_controller *msi_ctrl; +#endif struct pci_ops *ops; int nr_controllers; void **private_data; @@ -47,6 +50,9 @@ struct pci_sys_data { #ifdef CONFIG_PCI_DOMAINS int domain; #endif +#ifdef CONFIG_PCI_MSI + struct msi_controller *msi_ctrl; +#endif struct list_head node; int busnr; /* primary bus number */ u64 mem_offset; /* bus->cpu memory mapping offset */ |