| 77 | }; |
| 78 | |
| 79 | static __inline int |
| 80 | k6_mrmake(struct mem_range_desc *desc, u_int32_t *mtrr) |
| 81 | { |
| 82 | u_int32_t len = 0, wc, uc; |
| 83 | int bit; |
| 84 | |
| 85 | if (desc->mr_base &~ 0xfffe0000) |
| 86 | return (EINVAL); |
| 87 | if (desc->mr_len < 131072 || !powerof2(desc->mr_len)) |
| 88 | return (EINVAL); |
| 89 | if (desc->mr_flags &~ (MDF_WRITECOMBINE|MDF_UNCACHEABLE|MDF_FORCE)) |
| 90 | return (EOPNOTSUPP); |
| 91 | |
| 92 | for (bit = ffs(desc->mr_len >> 17) - 1; bit < 15; bit++) |
| 93 | len |= 1 << bit; |
| 94 | wc = (desc->mr_flags & MDF_WRITECOMBINE) ? 1 : 0; |
| 95 | uc = (desc->mr_flags & MDF_UNCACHEABLE) ? 1 : 0; |
| 96 | |
| 97 | *mtrr = K6_REG_MAKE(desc->mr_base, len, wc, uc); |
| 98 | return (0); |
| 99 | } |
| 100 | |
| 101 | static void |
| 102 | k6_mrinit(struct mem_range_softc *sc) |