16c9f99dfSJanosch Frank /* SPDX-License-Identifier: GPL-2.0-only */ 2f6b354fbSJanosch Frank /* 3f6b354fbSJanosch Frank * Physical memory management related functions and definitions. 4f6b354fbSJanosch Frank * 5f6b354fbSJanosch Frank * Copyright IBM Corp. 2018 6*b81a2cd4SJanosch Frank * Author(s): Janosch Frank <frankja@linux.ibm.com> 7f6b354fbSJanosch Frank */ 8eb5a1bbaSCornelia Huck #ifndef _ASMS390X_MEM_H_ 9eb5a1bbaSCornelia Huck #define _ASMS390X_MEM_H_ 10f6b354fbSJanosch Frank 11d0bfafdfSJanosch Frank #define SKEY_ACC 0xf0 12d0bfafdfSJanosch Frank #define SKEY_FP 0x08 13d0bfafdfSJanosch Frank #define SKEY_RF 0x04 14d0bfafdfSJanosch Frank #define SKEY_CH 0x02 15d0bfafdfSJanosch Frank 16f6b354fbSJanosch Frank union skey { 17f6b354fbSJanosch Frank struct { 18f6b354fbSJanosch Frank uint8_t acc : 4; 19f6b354fbSJanosch Frank uint8_t fp : 1; 20f6b354fbSJanosch Frank uint8_t rf : 1; 21f6b354fbSJanosch Frank uint8_t ch : 1; 22f6b354fbSJanosch Frank uint8_t pad : 1; 23f6b354fbSJanosch Frank } str; 24f6b354fbSJanosch Frank uint8_t val; 25f6b354fbSJanosch Frank }; 26f6b354fbSJanosch Frank 277b9ca995SJanosch Frank static inline void set_storage_key(void *addr, unsigned char skey, int nq) 28f6b354fbSJanosch Frank { 29f6b354fbSJanosch Frank if (nq) 30f6b354fbSJanosch Frank asm volatile(".insn rrf,0xb22b0000,%0,%1,8,0" 31f6b354fbSJanosch Frank : : "d" (skey), "a" (addr)); 32f6b354fbSJanosch Frank else 33f6b354fbSJanosch Frank asm volatile("sske %0,%1" : : "d" (skey), "a" (addr)); 34f6b354fbSJanosch Frank } 35f6b354fbSJanosch Frank 367b9ca995SJanosch Frank static inline void *set_storage_key_mb(void *addr, unsigned char skey) 37f6b354fbSJanosch Frank { 38f6b354fbSJanosch Frank assert(test_facility(8)); 39f6b354fbSJanosch Frank 40f6b354fbSJanosch Frank asm volatile(".insn rrf,0xb22b0000,%[skey],%[addr],1,0" 41f6b354fbSJanosch Frank : [addr] "+a" (addr) : [skey] "d" (skey)); 42f6b354fbSJanosch Frank return addr; 43f6b354fbSJanosch Frank } 44f6b354fbSJanosch Frank 457b9ca995SJanosch Frank static inline unsigned char get_storage_key(void *addr) 46f6b354fbSJanosch Frank { 47f6b354fbSJanosch Frank unsigned char skey; 48f6b354fbSJanosch Frank 49f6b354fbSJanosch Frank asm volatile("iske %0,%1" : "=d" (skey) : "a" (addr)); 50f6b354fbSJanosch Frank return skey; 51f6b354fbSJanosch Frank } 526f9a99feSJanosch Frank 536f9a99feSJanosch Frank #define PFMF_FSC_4K 0 546f9a99feSJanosch Frank #define PFMF_FSC_1M 1 556f9a99feSJanosch Frank #define PFMF_FSC_2G 2 566f9a99feSJanosch Frank 576f9a99feSJanosch Frank union pfmf_r1 { 586f9a99feSJanosch Frank struct { 596f9a99feSJanosch Frank unsigned long pad0 : 32; 606f9a99feSJanosch Frank unsigned long pad1 : 12; 616f9a99feSJanosch Frank unsigned long pad_fmfi : 2; 626f9a99feSJanosch Frank unsigned long sk : 1; /* set key*/ 636f9a99feSJanosch Frank unsigned long cf : 1; /* clear frame */ 646f9a99feSJanosch Frank unsigned long ui : 1; /* usage indication */ 656f9a99feSJanosch Frank unsigned long fsc : 3; 666f9a99feSJanosch Frank unsigned long pad2 : 1; 676f9a99feSJanosch Frank unsigned long mr : 1; 686f9a99feSJanosch Frank unsigned long mc : 1; 696f9a99feSJanosch Frank unsigned long pad3 : 1; 706f9a99feSJanosch Frank unsigned long key : 8; /* storage keys */ 716f9a99feSJanosch Frank } reg; 726f9a99feSJanosch Frank unsigned long val; 736f9a99feSJanosch Frank }; 746f9a99feSJanosch Frank 756f9a99feSJanosch Frank static inline void *pfmf(unsigned long r1, void *paddr) 766f9a99feSJanosch Frank { 776f9a99feSJanosch Frank register void * addr asm("1") = paddr; 786f9a99feSJanosch Frank 796f9a99feSJanosch Frank asm volatile(".insn rre,0xb9af0000,%[r1],%[addr]" 806f9a99feSJanosch Frank : [addr] "+a" (addr) : [r1] "d" (r1) : "memory"); 816f9a99feSJanosch Frank return addr; 826f9a99feSJanosch Frank } 83f6b354fbSJanosch Frank #endif 84