On Fri, 2009-11-06 at 21:11 +0800, Wu Zhangjin wrote:
> From: Wu Zhangjin <wuzhangjin@xxxxxxxxx>
>
> Most of the pci support between fuloong2e and lemote loongson2f family
> machines are the same, except the cs5536 support.
>
> This patch renames ops-fuloong2e.c to ops-loongson2.c and then append
> the cs5536 support to share most of the source code among loongson
> machines.
[...]
> +
> +
> +static int loongson_pcibios_config_access(unsigned char access_type,
> + struct pci_bus *bus,
> + unsigned int devfn, int where,
> + u32 *data)
> +{
> + u32 busnum = bus->number;
> + u32 addr, type;
> + u32 dummy;
> + void *addrp;
> + int device = PCI_SLOT(devfn);
> + int function = PCI_FUNC(devfn);
> + int reg = where & ~3;
> +
> + if (busnum == 0) {
> + /* board-specific part,currently,only fuloong2f,yeeloong2f
> + * use CS5536, fuloong2e use via686b, gdium has no
> + * south bridge
> + */
> +#ifdef CONFIG_CS5536
> + /* cs5536_pci_conf_read4/write4() will call _rdmsr/_wrmsr() to
> + * access the regsters PCI_MSR_ADDR, PCI_MSR_DATA_LO,
> + * PCI_MSR_DATA_HI, which is bigger than 0xf0, so, it will not
> + * go this branch, but the others. so, no calling dead loop
> + * here.
> + */
> + if ((PCI_IDSEL_CS5536 == device) && (reg < PCI_MSR_CTRL)) {
0xf0 is exactly PCI_MSR_CTRL, will replace it by PCI_MSR_CTRL later.
Regards,
Wu Zhangjin
