Convert open-coded variants of PCI field access into FIELD_GET/PREP() to make the code easier to understand. Add two missing defines into pci_regs.h. Logically, the Max No-Snoop Latency Register is a separate word sized register in the PCIe spec, but the pre-existing LTR defines in pci_regs.h with dword long values seem to consider the registers together (the same goes for the only user). Thus, follow the custom and make the new values also take both word long LTR registers as a joint dword register.
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| @@ -975,6 +975,8 @@ · 974 unmodified lines | ||
| 975 | 975 | #define PCI_LTR_VALUE_MASK 0x000003ff |
| 976 | 976 | #define PCI_LTR_SCALE_MASK 0x00001c00 |
| 977 | 977 | #define PCI_LTR_SCALE_SHIFT 10 |
| 978 | +#define PCI_LTR_NOSNOOP_VALUE 0x03ff0000 /* Max No-Snoop Latency Value */ | |
| 979 | +#define PCI_LTR_NOSNOOP_SCALE 0x1c000000 /* Scale for Max Value */ | |
| 978 | 980 | #define PCI_EXT_CAP_LTR_SIZEOF 8 |
| 979 | 981 | |
| 980 | 982 | /* Access Control Service */ |