diff options
Diffstat (limited to 'src/soc/intel/common/block/itss/itss.c')
| -rw-r--r-- | src/soc/intel/common/block/itss/itss.c | 34 |
1 files changed, 22 insertions, 12 deletions
diff --git a/src/soc/intel/common/block/itss/itss.c b/src/soc/intel/common/block/itss/itss.c index a217675405..a8b390b719 100644 --- a/src/soc/intel/common/block/itss/itss.c +++ b/src/soc/intel/common/block/itss/itss.c @@ -2,6 +2,7 @@ * This file is part of the coreboot project. * * Copyright (C) 2017 Intel Corporation. + * Copyright (C) 2017 Siemens AG * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by @@ -23,18 +24,27 @@ void itss_irq_init(uint8_t pch_interrupt_routing[MAX_PXRC_CONFIG]) { - uint8_t index = 0; - - for (index = 0; index < MAX_PXRC_CONFIG; index++) { - uint8_t val = pch_interrupt_routing[index]; - uint8_t irq = val & 0xf; - - if (irq == 8 || irq == 13) - continue; - if (irq <= 2) - continue; - - pcr_write8(PID_ITSS, PCR_ITSS_PIRQA_ROUT + index, val); + uint32_t regs[MAX_PXRC_CONFIG/sizeof(uint32_t)] = {0}; + uint8_t index, byte; + + /* Fill in all the PIRx routes into one array. */ + for (index = 0; index < ARRAY_SIZE(regs); index++) { + for (byte = 0; byte < sizeof(uint32_t); byte++) { + uint8_t val = pch_interrupt_routing[index * + sizeof(uint32_t) + byte]; + uint8_t irq = val & 0xf; + + if ((irq <= 2) || (irq == 8) || (irq == 13)) + regs[index] |= (0x80 << (8 * byte)); + else + regs[index] |= (val << (8 * byte)); + } + /* Access the routing register in 32 bit mode to make this + function suitable for both IOSF 1.0 (where only 32 bit access + is supported) and later versions of the interface. */ + pcr_write32(PID_ITSS, + PCR_ITSS_PIRQA_ROUT + (index * sizeof(uint32_t)), + regs[index]); } } |