Messages in this thread | | | Date | Thu, 22 Aug 2002 12:11:41 +0200 (CEST) | From | Gérard Roudier <> | Subject | Re: PCI Cleanup |
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On Wed, 21 Aug 2002, Hanna Linder wrote:
> Here is the first part of the sh port of the pci_ops > changes. If anyone can compile this for Sega let me > know if there are any problems.
The 'val' pointer is declared 'u32 *', then casted 'u8 *' or 'u16 *' if needed. The compiler will not warn you. But user that wants to operate on u8 or u16 has to cast the 'val' argument to 'u32 *' and should get a warning from any decent C compiler. The normal C-way for such 'sorry-typed' argument is 'void *val', IMO.
Gérard.
> Thanks. > > Hanna Linder > hannal@us.ibm.com > > ps -this patches against bk://linuxusb.bkbits.net/pci_hp-2.5 > > ----- > > diff -Nru a/arch/sh/kernel/pci-dc.c b/arch/sh/kernel/pci-dc.c > --- a/arch/sh/kernel/pci-dc.c Wed Aug 21 17:55:02 2002 > +++ b/arch/sh/kernel/pci-dc.c Wed Aug 21 17:55:02 2002 > @@ -31,76 +31,58 @@ > {0, 0, 0, NULL} > }; > > -#define BBA_SELECTED(dev) (dev->bus->number==0 && dev->devfn==0) > +#define BBA_SELECTED(bus,devfn) (bus->number==0 && devfn==0) > > -static int gapspci_read_config_byte(struct pci_dev *dev, int where, > - u8 * val) > +static int gapspci_read(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 * val) > { > - if (BBA_SELECTED(dev)) > - *val = inb(GAPSPCI_BBA_CONFIG+where); > - else > - *val = 0xff; > - > + switch (size) { > + case 1: > + if (BBA_SELECTED(bus, devfn)) > + *val = (u8)inb(GAPSPCI_BBA_CONFIG+where); > + else > + *val = (u8)0xff; > + break; > + case 2: > + if (BBA_SELECTED(bus, devfn)) > + *val = (u16)inw(GAPSPCI_BBA_CONFIG+where); > + else > + *val = (u16)0xffff; > + break; > + case 4: > + if (BBA_SELECTED(bus, devfn)) > + *val = inl(GAPSPCI_BBA_CONFIG+where); > + else > + *val = 0xffffffff; > + break; > + } > return PCIBIOS_SUCCESSFUL; > } > > -static int gapspci_read_config_word(struct pci_dev *dev, int where, > - u16 * val) > -{ > - if (BBA_SELECTED(dev)) > - *val = inw(GAPSPCI_BBA_CONFIG+where); > - else > - *val = 0xffff; > - > - return PCIBIOS_SUCCESSFUL; > -} > - > -static int gapspci_read_config_dword(struct pci_dev *dev, int where, > - u32 * val) > -{ > - if (BBA_SELECTED(dev)) > - *val = inl(GAPSPCI_BBA_CONFIG+where); > - else > - *val = 0xffffffff; > - > - return PCIBIOS_SUCCESSFUL; > -} > - > -static int gapspci_write_config_byte(struct pci_dev *dev, int where, > - u8 val) > -{ > - if (BBA_SELECTED(dev)) > - outb(val, GAPSPCI_BBA_CONFIG+where); > - > - return PCIBIOS_SUCCESSFUL; > -} > - > - > -static int gapspci_write_config_word(struct pci_dev *dev, int where, > - u16 val) > -{ > - if (BBA_SELECTED(dev)) > - outw(val, GAPSPCI_BBA_CONFIG+where); > - > - return PCIBIOS_SUCCESSFUL; > -} > - > -static int gapspci_write_config_dword(struct pci_dev *dev, int where, > - u32 val) > +static int gapspci_write(struct pci_bus *bus, unsigned int devfn, > + int where, u32 val) > { > - if (BBA_SELECTED(dev)) > - outl(val, GAPSPCI_BBA_CONFIG+where); > - > - return PCIBIOS_SUCCESSFUL; > + if (BBA_SELECTED(bus, devfn)) { > + switch (size) { > + case 1: > + if (BBA_SELECTED(bus, devfn)) > + outb((u8)val, GAPSPCI_BBA_CONFIG+where); > + break; > + case 2: > + if (BBA_SELECTED(bus, devfn)) > + outw((u16)val, GAPSPCI_BBA_CONFIG+where); > + break; > + case 4: > + if (BBA_SELECTED(bus, devfn)) > + outl(val, GAPSPCI_BBA_CONFIG+where); > + break; > + } > + } > + return PCIBIOS_SUCCESSFUL; > } > > static struct pci_ops pci_config_ops = { > - gapspci_read_config_byte, > - gapspci_read_config_word, > - gapspci_read_config_dword, > - gapspci_write_config_byte, > - gapspci_write_config_word, > - gapspci_write_config_dword > + .read = gapspci_read, > + .write = gapspci_write, > }; > > > @@ -143,7 +125,7 @@ > > for (ln=bus->devices.next; ln != &bus->devices; ln=ln->next) { > dev = pci_dev_b(ln); > - if (!BBA_SELECTED(dev)) continue; > + if (!BBA_SELECTED(bus, dev->devfn)) continue; > > printk("PCI: MMIO fixup to %s\n", dev->name); > dev->resource[1].start=0x01001700; > > - > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/ >
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