/* Copyright 2013-2014 IBM Corp. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or * implied. * See the License for the specific language governing permissions and * limitations under the License. */ #ifndef __CHIP_H #define __CHIP_H #include #include #include /* * Note on chip IDs: * * We carry a "chip_id" around, in the cpu_thread, but also as * ibm,chip-id properties. * * This ID is the HW fabric ID of a chip based on the XSCOM numbering, * also known as "GCID" (Global Chip ID). * * The format of this number is different between P7 and P8 and care must * be taken when trying to convert between this chip ID and some other * representation such as PIR values, interrupt-server numbers etc... : * * P7 GCID * ------- * * Global chip ID is a 6 bit number: * * NodeID T ChipID * | | | | * |___|___|___|___|___|___| * * Where T is the "torrent" bit and is 0 for P7 chips and 1 for * directly XSCOM'able IO chips such as Torrent * * This macro converts a PIR to a GCID */ #define P7_PIR2GCID(pir) ({ \ uint32_t _pir = pir; \ ((_pir >> 4) & 0x38) | ((_pir >> 5) & 0x3); }) #define P7_PIR2COREID(pir) (((pir) >> 2) & 0x7) #define P7_PIR2THREADID(pir) ((pir) & 0x3) /* * P8 GCID * ------- * * Global chip ID is a 6 bit number: * * NodeID ChipID * | | | * |___|___|___|___|___|___| * * The difference with P7 is the absence of T bit, the ChipID * is 3 bits long. The GCID is thus the same as the high bits * if the PIR */ #define P8_PIR2GCID(pir) (((pir) >> 7) & 0x3f) #define P8_PIR2COREID(pir) (((pir) >> 3) & 0xf) #define P8_PIR2THREADID(pir) ((pir) & 0x7) /* * P9 GCID * ------- * * Global chip ID is a 7 bit number: * * NodeID ChipID * | | | * |___|___|___|___|___|___|___| * * Bit 56 is unused according to the manual by we add it to the coreid here, * thus we have a 6-bit core number. * * Note: XIVE Only supports 4-bit chip numbers ... */ #define P9_PIR2GCID(pir) (((pir) >> 8) & 0x7f) #define P9_PIR2COREID(pir) (((pir) >> 2) & 0x3f) #define P9_PIR2THREADID(pir) ((pir) & 0x3) #define P9_GCID2NODEID(gcid) (((gcid) >> 3) & 0xf) #define P9_GCID2CHIPID(gcid) ((gcid) & 0x7) /* P9 specific ones mostly used by XIVE */ #define P9_PIR2LOCALCPU(pir) ((pir) & 0xff) #define P9_PIRFROMLOCALCPU(chip, cpu) (((chip) << 8) | (cpu)) struct dt_node; struct centaur_chip; struct mfsi; struct xive; struct lpcm; struct vas; struct p9_sbe; /* Chip type */ enum proc_chip_type { PROC_CHIP_UNKNOWN, PROC_CHIP_P7, PROC_CHIP_P7P, PROC_CHIP_P8_MURANO, PROC_CHIP_P8_VENICE, PROC_CHIP_P8_NAPLES, PROC_CHIP_P9_NIMBUS, PROC_CHIP_P9_CUMULUS, }; /* Simulator quirks */ enum proc_chip_quirks { QUIRK_NO_CHIPTOD = 0x00000001, QUIRK_MAMBO_CALLOUTS = 0x00000002, QUIRK_NO_F000F = 0x00000004, QUIRK_NO_PBA = 0x00000008, QUIRK_NO_OCC_IRQ = 0x00000010, QUIRK_SIMICS = 0x00000020, QUIRK_SLOW_SIM = 0x00000040, QUIRK_NO_DIRECT_CTL = 0x00000080, QUIRK_NO_RNG = 0x00000100, }; extern enum proc_chip_quirks proc_chip_quirks; static inline bool chip_quirk(unsigned int q) { return !!(proc_chip_quirks & q); } #define MAX_CHIPS (1 << 6) /* 6-bit chip ID */ /* * For each chip in the system, we maintain this structure * * This contains fields used by different modules including * modules in hw/ but is handy to keep per-chip data */ struct proc_chip { uint32_t id; /* HW Chip ID (GCID) */ struct dt_node *devnode; /* "xscom" chip node */ /* These are only initialized after xcom_init */ enum proc_chip_type type; uint32_t ec_level; /* 0xMm (DD1.0 = 0x10) */ uint8_t ec_rev; /* sub-revision */ /* Those two values are only populated on machines with an FSP * dbob_id = Drawer/Block/Octant/Blade (DBOBID) * pcid = HDAT processor_chip_id */ uint32_t dbob_id; uint32_t pcid; /* If we expect to have an OCC (i.e. P8) and it is functional, * set TRUE. If something has told us it is not, set FALSE and * we can not wait for OCCs to init. This is only going to be * FALSE in a simulator that doesn't simulate OCCs. */ bool occ_functional; /* Used by hw/xscom.c */ uint64_t xscom_base; /* Used by hw/lpc.c */ struct lpcm *lpc; /* Used by hw/slw.c */ uint64_t slw_base; uint64_t slw_bar_size; uint64_t slw_image_size; /* Used by hw/homer.c */ uint64_t homer_base; uint64_t homer_size; uint64_t occ_common_base; uint64_t occ_common_size; uint8_t throttle; /* Must hold capi_lock to change */ uint8_t capp_phb3_attached_mask; uint8_t capp_phb4_attached_mask; uint8_t capp_ucode_loaded; /* Used by hw/centaur.c */ struct centaur_chip *centaurs; /* Used by hw/p8-i2c.c */ struct list_head i2cms; /* Used by hw/psi.c */ struct psi *psi; /* Used by hw/fsi-master.c */ struct mfsi *fsi_masters; /* Used by hw/xive.c */ struct xive *xive; struct vas *vas; /* location code of this chip */ const uint8_t *loc_code; /* Used by hw/sbe-p9.c */ struct p9_sbe *sbe; }; extern uint32_t pir_to_chip_id(uint32_t pir); extern uint32_t pir_to_core_id(uint32_t pir); extern uint32_t pir_to_thread_id(uint32_t pir); extern struct proc_chip *next_chip(struct proc_chip *chip); #define for_each_chip(__c) for (__c=next_chip(NULL); __c; __c=next_chip(__c)) extern struct proc_chip *get_chip(uint32_t chip_id); extern void init_chips(void); /* helper to get number of chips in the system */ static inline int nr_chips(void) { struct proc_chip *chip; int nr_chips = 0; for_each_chip(chip) nr_chips++; return nr_chips; } /* helper to get location code of a chip */ static inline const char *chip_loc_code(uint32_t chip_id) { struct proc_chip *chip; chip = get_chip(chip_id); if (!chip) return NULL; return chip->loc_code; } #endif /* __CHIP_H */