diff options
Diffstat (limited to 'sys/dev/e1000/e1000_osdep.h')
| -rw-r--r-- | sys/dev/e1000/e1000_osdep.h | 114 |
1 files changed, 113 insertions, 1 deletions
diff --git a/sys/dev/e1000/e1000_osdep.h b/sys/dev/e1000/e1000_osdep.h index ba1c8a16fad1..1226c0264333 100644 --- a/sys/dev/e1000/e1000_osdep.h +++ b/sys/dev/e1000/e1000_osdep.h @@ -161,8 +161,111 @@ struct e1000_osdep bus_space_handle_t flash_bus_space_handle; device_t dev; if_ctx_t ctx; + bool vf; + bool vf_82576; }; +#ifdef INVARIANTS +/* + * 82576 and I350 VFs expose a sparse register file. Keep this list local to + * the OS accessors so a PF-only register that leaks into the shared VF path + * fails at its first access instead of returning reserved-register garbage. + * + * The driver intentionally uses only queue pair zero. It also clears the + * retained configuration of the unused second 82576 queue pair after VFLR. + * Expanding VF data-path queue support must extend this predicate from the + * applicable device CSR map. + */ +static __inline bool +e1000_vf_reg_valid(uint32_t reg, bool write, bool vf_82576) +{ + /* VF mailbox memory: 16 dwords beginning at 0x800. */ + if (reg >= 0x00800 && reg <= 0x0083c && (reg & 3) == 0) + return (true); + + /* The three VF MSI-X interrupt-throttling registers. */ + if (reg >= 0x01680 && reg <= 0x01688 && (reg & 3) == 0) + return (true); + + /* Receive queue zero. */ + switch (reg) { + case 0x02800: /* RDBAL */ + case 0x02804: /* RDBAH */ + case 0x02808: /* RDLEN */ + case 0x0280c: /* SRRCTL */ + case 0x02810: /* RDH */ + case 0x02814: /* RXCTL */ + case 0x02818: /* RDT */ + case 0x02828: /* RXDCTL */ + return (true); + } + + /* Transmit queue zero. */ + switch (reg) { + case 0x03800: /* TDBAL */ + case 0x03804: /* TDBAH */ + case 0x03808: /* TDLEN */ + case 0x03810: /* TDH */ + case 0x03814: /* TXCTL */ + case 0x03818: /* TDT */ + case 0x03828: /* TXDCTL */ + case 0x03838: /* TDWBAL */ + case 0x0383c: /* TDWBAH */ + return (true); + } + + /* Retained configuration from 82576 virtual queue one. */ + if (vf_82576) { + switch (reg) { + case 0x0290c: /* SRRCTL(1) */ + case 0x02914: /* RXCTL(1) */ + case 0x02928: /* RXDCTL(1) */ + case 0x03914: /* TXCTL(1) */ + case 0x03928: /* TXDCTL(1) */ + case 0x03938: /* TDWBAL(1) */ + case 0x0393c: /* TDWBAH(1) */ + return (true); + } + } + + /* + * 82576 exposes VFMPRC at 0xf3c. I350 erratum 31 makes + * its corrected 0xf38 address inaccessible to a VF. + */ + if (vf_82576 && reg == 0x00f3c) + return (!write); + + switch (reg) { + case 0x00000: /* CTRL */ + case 0x000c4: /* Legacy ITR, listed but unused by igb VFs */ + case 0x00c40: /* V2PMAILBOX(0) */ + case 0x00f0c: /* VFPSRTYPE */ + case 0x01524: /* EIMS */ + case 0x0152c: /* EIAC */ + case 0x01530: /* EIAM */ + case 0x01700: /* IVAR0 */ + case 0x01740: /* IVAR_MISC */ + return (true); + case 0x01520: /* EICS */ + case 0x01528: /* EIMC */ + return (write); + case 0x00008: /* STATUS */ + case 0x00f10: /* VFGPRC */ + case 0x00f14: /* VFGPTC */ + case 0x00f18: /* VFGORC */ + case 0x00f34: /* VFGOTC */ + case 0x00f40: /* VFGPRLBC */ + case 0x00f44: /* VFGPTLBC */ + case 0x00f48: /* VFGORLBC */ + case 0x00f50: /* VFGOTLBC */ + case 0x01580: /* EICR */ + return (!write); + default: + return (false); + } +} +#endif + #define E1000_REGISTER(hw, reg) (((hw)->mac.type >= e1000_82543) \ ? reg : e1000_translate_register_82542(reg)) @@ -185,6 +288,11 @@ e1000_rd32(struct e1000_osdep *osdep, uint32_t reg) KASSERT(reg < osdep->mem_bus_space_size, ("e1000: register offset %#jx too large (max is %#jx)", (uintmax_t)reg, (uintmax_t)osdep->mem_bus_space_size)); +#ifdef INVARIANTS + KASSERT(!osdep->vf || + e1000_vf_reg_valid(reg, false, osdep->vf_82576), + ("e1000: invalid VF register read at %#x", reg)); +#endif return (bus_space_read_4(osdep->mem_bus_space_tag, osdep->mem_bus_space_handle, reg)); @@ -198,6 +306,11 @@ e1000_wr32(struct e1000_osdep *osdep, uint32_t reg, uint32_t value) KASSERT(reg < osdep->mem_bus_space_size, ("e1000: register offset %#jx too large (max is %#jx)", (uintmax_t)reg, (uintmax_t)osdep->mem_bus_space_size)); +#ifdef INVARIANTS + KASSERT(!osdep->vf || + e1000_vf_reg_valid(reg, true, osdep->vf_82576), + ("e1000: invalid VF register write at %#x", reg)); +#endif bus_space_write_4(osdep->mem_bus_space_tag, osdep->mem_bus_space_handle, reg, value); @@ -277,4 +390,3 @@ e1000_wr32(struct e1000_osdep *osdep, uint32_t reg, uint32_t value) #endif #endif /* _FREEBSD_OS_H_ */ - |