From 2909060699226f70d731d9c242489418f7da4972 Mon Sep 17 00:00:00 2001 From: Bjorn Helgaas Date: Thu, 23 Feb 2012 20:18:57 -0700 Subject: mips/PCI: replace pci_probe_only with pci_flags Some architectures (alpha, mips, powerpc) have an arch-specific "pci_probe_only" flag. Others use PCI_PROBE_ONLY in pci_flags for the same purpose. This moves mips to the pci_flags approach so generic code can use the same test across all architectures. CC: Ralf Baechle CC: linux-mips@linux-mips.org Signed-off-by: Bjorn Helgaas --- arch/mips/include/asm/pci.h | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) (limited to 'arch/mips/include/asm/pci.h') diff --git a/arch/mips/include/asm/pci.h b/arch/mips/include/asm/pci.h index 576397c69920..1e4fa3da3f70 100644 --- a/arch/mips/include/asm/pci.h +++ b/arch/mips/include/asm/pci.h @@ -92,6 +92,7 @@ extern int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma, #include #include #include +#include struct pci_dev; @@ -145,8 +146,6 @@ static inline int pci_get_legacy_ide_irq(struct pci_dev *dev, int channel) #define arch_setup_msi_irqs arch_setup_msi_irqs #endif -extern int pci_probe_only; - extern char * (*pcibios_plat_setup)(char *str); #endif /* _ASM_PCI_H */ -- cgit v1.2.3 From 96a6b9ad05a2d5654f168d3ad9d9696d3b03a7c2 Mon Sep 17 00:00:00 2001 From: Bjorn Helgaas Date: Thu, 23 Feb 2012 20:19:02 -0700 Subject: mips/PCI: get rid of device resource fixups Tell the PCI core about host bridge address translation so it can take care of bus-to-resource conversion for us. Here's the wrinkle on Cobalt: we can't generate normal I/O port addresses on PCI because the GT-64111 doesn't do any address translation, so we have this: CPU I/O port addresses [io 0x0000-0xffffff] PCI bus I/O port addresses [io 0x10000000-0x10ffffff] Legacy-mode IDE controllers start out with the legacy bus addresses, e.g., 0x1f0, assigned by pci_setup_device(). These are outside the range of addresses GT-64111 can generate on PCI, but pcibios_fixup_device_resources() converted them to CPU addresses anyway by adding io_offset. Therefore, we had to pre-adjust them in cobalt_legacy_ide_fixup(). With io_offset = 0xf0000000, we had this: res->start = 0x1f0 initialized in pci_setup_device() res->start = 0x100001f0 -= io_offset in cobalt_legacy_ide_fixup() res->start = 0x1f0 += io_offset in pcibios_fixup_device_resources() The difference after this patch is that the generic pci_bus_to_resource() only adds the offset if the bus address is inside a host bridge window. Since 0x1f0 is not a valid bus address and is not inside any windows, it is unaffected, so we now have this: region->start = 0x1f0 initialized in pci_setup_device() res->start = 0x1f0 no offset by pci_bus_to_resource() That means we can remove both pcibios_fixup_device_resources() and cobalt_legacy_ide_fixup(). I would *rather* set the host bridge offset to zero (which corresponds to what the GT-64111 actually does), and have both CPU and PCI addresses of [io 0x10000000-0x10ffffff]. However, that would require changes to generic code that assumes legacy I/O addresses, such as pic1_io_resource ([io 0x0020-0x00021]), and we'd have to keep a Cobalt IDE fixup. Of course, none of this changes the fact that references to I/O port 0x1f0 actually go to port 0x100001f0, not 0x1f0, on the Cobalt PCI bus. Fortunately the VT82C586 IDE controller only decodes the low 24 address bits, so it does work. CC: Ralf Baechle CC: Yoichi Yuasa Signed-off-by: Bjorn Helgaas --- arch/mips/include/asm/pci.h | 6 +----- 1 file changed, 1 insertion(+), 5 deletions(-) (limited to 'arch/mips/include/asm/pci.h') diff --git a/arch/mips/include/asm/pci.h b/arch/mips/include/asm/pci.h index 1e4fa3da3f70..6420e8df4e45 100644 --- a/arch/mips/include/asm/pci.h +++ b/arch/mips/include/asm/pci.h @@ -113,11 +113,7 @@ static inline void pci_dma_burst_advice(struct pci_dev *pdev, } #endif -extern void pcibios_resource_to_bus(struct pci_dev *dev, - struct pci_bus_region *region, struct resource *res); - -extern void pcibios_bus_to_resource(struct pci_dev *dev, struct resource *res, - struct pci_bus_region *region); +#define ARCH_HAS_GENERIC_PCI_OFFSETS #define pci_domain_nr(bus) ((struct pci_controller *)(bus)->sysdata)->index -- cgit v1.2.3 From fb127cb9de791d62fb393d6e65fa9869bddd2460 Mon Sep 17 00:00:00 2001 From: Bjorn Helgaas Date: Thu, 23 Feb 2012 20:19:04 -0700 Subject: PCI: collapse pcibios_resource_to_bus Everybody uses the generic pcibios_resource_to_bus() supplied by the core now, so remove the ARCH_HAS_GENERIC_PCI_OFFSETS used during conversion. Signed-off-by: Bjorn Helgaas --- arch/mips/include/asm/pci.h | 2 -- 1 file changed, 2 deletions(-) (limited to 'arch/mips/include/asm/pci.h') diff --git a/arch/mips/include/asm/pci.h b/arch/mips/include/asm/pci.h index 6420e8df4e45..fcd4060f6421 100644 --- a/arch/mips/include/asm/pci.h +++ b/arch/mips/include/asm/pci.h @@ -113,8 +113,6 @@ static inline void pci_dma_burst_advice(struct pci_dev *pdev, } #endif -#define ARCH_HAS_GENERIC_PCI_OFFSETS - #define pci_domain_nr(bus) ((struct pci_controller *)(bus)->sysdata)->index static inline int pci_proc_domain(struct pci_bus *bus) -- cgit v1.2.3