1/* SPDX-License-Identifier: GPL-2.0 */ 2/* 3 * HEART chip definitions 4 * 5 * Copyright (C) 2004-2007 Stanislaw Skowronek <skylark@unaligned.org> 6 * 2009 Johannes Dickgreber <tanzy@gmx.de> 7 * 2007-2015 Joshua Kinard <kumba@gentoo.org> 8 */ 9#ifndef __ASM_SGI_HEART_H 10#define __ASM_SGI_HEART_H 11 12#include <linux/types.h> 13#include <linux/time.h> 14 15/* 16 * There are 8 DIMM slots on an IP30 system 17 * board, which are grouped into four banks 18 */ 19#define HEART_MEMORY_BANKS 4 20 21/* HEART can support up to four CPUs */ 22#define HEART_MAX_CPUS 4 23 24#define HEART_XKPHYS_BASE ((void *)(IO_BASE | 0x000000000ff00000ULL)) 25 26/** 27 * struct ip30_heart_regs - struct that maps IP30 HEART registers. 28 * @mode: HEART_MODE - Purpose Unknown, machine reset called from here. 29 * @sdram_mode: HEART_SDRAM_MODE - purpose unknown. 30 * @mem_refresh: HEART_MEM_REF - purpose unknown. 31 * @mem_req_arb: HEART_MEM_REQ_ARB - purpose unknown. 32 * @mem_cfg.q: union for 64bit access to HEART_MEMCFG - 4x 64bit registers. 33 * @mem_cfg.l: union for 32bit access to HEART_MEMCFG - 8x 32bit registers. 34 * @fc_mode: HEART_FC_MODE - Purpose Unknown, possibly for GFX flow control. 35 * @fc_timer_limit: HEART_FC_TIMER_LIMIT - purpose unknown. 36 * @fc_addr: HEART_FC0_ADDR, HEART_FC1_ADDR - purpose unknown. 37 * @fc_credit_cnt: HEART_FC0_CR_CNT, HEART_FC1_CR_CNT - purpose unknown. 38 * @fc_timer: HEART_FC0_TIMER, HEART_FC1_TIMER - purpose unknown. 39 * @status: HEART_STATUS - HEART status information. 40 * @bus_err_addr: HEART_BERR_ADDR - likely contains addr of recent SIGBUS. 41 * @bus_err_misc: HEART_BERR_MISC - purpose unknown. 42 * @mem_err_addr: HEART_MEMERR_ADDR - likely contains addr of recent mem err. 43 * @mem_err_data: HEART_MEMERR_DATA - purpose unknown. 44 * @piur_acc_err: HEART_PIUR_ACC_ERR - likely for access err to HEART regs. 45 * @mlan_clock_div: HEART_MLAN_CLK_DIV - MicroLAN clock divider. 46 * @mlan_ctrl: HEART_MLAN_CTL - MicroLAN control. 47 * @__pad0: 0x0f40 bytes of padding -> next HEART register 0x01000. 48 * @undefined: Undefined/diag register, write to it triggers PIUR_ACC_ERR. 49 * @__pad1: 0xeff8 bytes of padding -> next HEART register 0x10000. 50 * @imr: HEART_IMR0 to HEART_IMR3 - per-cpu interrupt mask register. 51 * @set_isr: HEART_SET_ISR - set interrupt status register. 52 * @clear_isr: HEART_CLR_ISR - clear interrupt status register. 53 * @isr: HEART_ISR - interrupt status register (read-only). 54 * @imsr: HEART_IMSR - purpose unknown. 55 * @cause: HEART_CAUSE - HEART cause information. 56 * @__pad2: 0xffb8 bytes of padding -> next HEART register 0x20000. 57 * @count: HEART_COUNT - 52-bit counter. 58 * @__pad3: 0xfff8 bytes of padding -> next HEART register 0x30000. 59 * @compare: HEART_COMPARE - 24-bit compare. 60 * @__pad4: 0xfff8 bytes of padding -> next HEART register 0x40000. 61 * @trigger: HEART_TRIGGER - purpose unknown. 62 * @__pad5: 0xfff8 bytes of padding -> next HEART register 0x50000. 63 * @cpuid: HEART_PRID - contains CPU ID of CPU currently accessing HEART. 64 * @__pad6: 0xfff8 bytes of padding -> next HEART register 0x60000. 65 * @sync: HEART_SYNC - purpose unknown. 66 * 67 * HEART is the main system controller ASIC for IP30 system. It incorporates 68 * a memory controller, interrupt status/cause/set/clear management, basic 69 * timer with count/compare, and other functionality. For Linux, not all of 70 * HEART's functions are fully understood. 71 * 72 * Implementation note: All HEART registers are 64bits-wide, but the mem_cfg 73 * register only reports correct values if queried in 32bits. Hence the need 74 * for a union. Even though mem_cfg.l has 8 array slots, we only ever query 75 * up to 4 of those. IP30 has 8 DIMM slots arranged into 4 banks, w/ 2 DIMMs 76 * per bank. Each 32bit read accesses one of these banks. Perhaps HEART was 77 * designed to address up to 8 banks (16 DIMMs)? We may never know. 78 */ 79struct ip30_heart_regs { /* 0x0ff00000 */ 80 u64 mode; /* + 0x00000 */ 81 /* Memory */ 82 u64 sdram_mode; /* + 0x00008 */ 83 u64 mem_refresh; /* + 0x00010 */ 84 u64 mem_req_arb; /* + 0x00018 */ 85 union { 86 u64 q[HEART_MEMORY_BANKS]; /* readq() */ 87 u32 l[HEART_MEMORY_BANKS * 2]; /* readl() */ 88 } mem_cfg; /* + 0x00020 */ 89 /* Flow control (gfx?) */ 90 u64 fc_mode; /* + 0x00040 */ 91 u64 fc_timer_limit; /* + 0x00048 */ 92 u64 fc_addr[2]; /* + 0x00050 */ 93 u64 fc_credit_cnt[2]; /* + 0x00060 */ 94 u64 fc_timer[2]; /* + 0x00070 */ 95 /* Status */ 96 u64 status; /* + 0x00080 */ 97 /* Bus error */ 98 u64 bus_err_addr; /* + 0x00088 */ 99 u64 bus_err_misc; /* + 0x00090 */ 100 /* Memory error */ 101 u64 mem_err_addr; /* + 0x00098 */ 102 u64 mem_err_data; /* + 0x000a0 */ 103 /* Misc */ 104 u64 piur_acc_err; /* + 0x000a8 */ 105 u64 mlan_clock_div; /* + 0x000b0 */ 106 u64 mlan_ctrl; /* + 0x000b8 */ 107 u64 __pad0[0x01e8]; /* + 0x000c0 + 0x0f40 */ 108 /* Undefined */ 109 u64 undefined; /* + 0x01000 */ 110 u64 __pad1[0x1dff]; /* + 0x01008 + 0xeff8 */ 111 /* Interrupts */ 112 u64 imr[HEART_MAX_CPUS]; /* + 0x10000 */ 113 u64 set_isr; /* + 0x10020 */ 114 u64 clear_isr; /* + 0x10028 */ 115 u64 isr; /* + 0x10030 */ 116 u64 imsr; /* + 0x10038 */ 117 u64 cause; /* + 0x10040 */ 118 u64 __pad2[0x1ff7]; /* + 0x10048 + 0xffb8 */ 119 /* Timer */ 120 u64 count; /* + 0x20000 */ 121 u64 __pad3[0x1fff]; /* + 0x20008 + 0xfff8 */ 122 u64 compare; /* + 0x30000 */ 123 u64 __pad4[0x1fff]; /* + 0x30008 + 0xfff8 */ 124 u64 trigger; /* + 0x40000 */ 125 u64 __pad5[0x1fff]; /* + 0x40008 + 0xfff8 */ 126 /* Misc */ 127 u64 cpuid; /* + 0x50000 */ 128 u64 __pad6[0x1fff]; /* + 0x50008 + 0xfff8 */ 129 u64 sync; /* + 0x60000 */ 130}; 131 132 133/* For timer-related bits. */ 134#define HEART_NS_PER_CYCLE 80 135#define HEART_CYCLES_PER_SEC (NSEC_PER_SEC / HEART_NS_PER_CYCLE) 136 137 138/* 139 * XXX: Everything below this comment will either go away or be cleaned 140 * up to fit in better with Linux. A lot of the bit definitions for 141 * HEART were derived from IRIX's sys/RACER/heart.h header file. 142 */ 143 144/* HEART Masks */ 145#define HEART_ATK_MASK 0x0007ffffffffffff /* HEART attack mask */ 146#define HEART_ACK_ALL_MASK 0xffffffffffffffff /* Ack everything */ 147#define HEART_CLR_ALL_MASK 0x0000000000000000 /* Clear all */ 148#define HEART_BR_ERR_MASK 0x7ff8000000000000 /* BRIDGE error mask */ 149#define HEART_CPU0_ERR_MASK 0x8ff8000000000000 /* CPU0 error mask */ 150#define HEART_CPU1_ERR_MASK 0x97f8000000000000 /* CPU1 error mask */ 151#define HEART_CPU2_ERR_MASK 0xa7f8000000000000 /* CPU2 error mask */ 152#define HEART_CPU3_ERR_MASK 0xc7f8000000000000 /* CPU3 error mask */ 153#define HEART_ERR_MASK 0x1ff /* HEART error mask */ 154#define HEART_ERR_MASK_START 51 /* HEART error start */ 155#define HEART_ERR_MASK_END 63 /* HEART error end */ 156 157/* Bits in the HEART_MODE register. */ 158#define HM_PROC_DISABLE_SHFT 60 159#define HM_PROC_DISABLE_MSK (0xfUL << HM_PROC_DISABLE_SHFT) 160#define HM_PROC_DISABLE(x) (0x1UL << (x) + HM_PROC_DISABLE_SHFT) 161#define HM_MAX_PSR (0x7UL << 57) 162#define HM_MAX_IOSR (0x7UL << 54) 163#define HM_MAX_PEND_IOSR (0x7UL << 51) 164#define HM_TRIG_SRC_SEL_MSK (0x7UL << 48) 165#define HM_TRIG_HEART_EXC (0x0UL << 48) 166#define HM_TRIG_REG_BIT (0x1UL << 48) 167#define HM_TRIG_SYSCLK (0x2UL << 48) 168#define HM_TRIG_MEMCLK_2X (0x3UL << 48) 169#define HM_TRIG_MEMCLK (0x4UL << 48) 170#define HM_TRIG_IOCLK (0x5UL << 48) 171#define HM_PIU_TEST_MODE (0xfUL << 40) 172#define HM_GP_FLAG_MSK (0xfUL << 36) 173#define HM_GP_FLAG(x) BIT((x) + 36) 174#define HM_MAX_PROC_HYST (0xfUL << 32) 175#define HM_LLP_WRST_AFTER_RST BIT(28) 176#define HM_LLP_LINK_RST BIT(27) 177#define HM_LLP_WARM_RST BIT(26) 178#define HM_COR_ECC_LCK BIT(25) 179#define HM_REDUCED_PWR BIT(24) 180#define HM_COLD_RST BIT(23) 181#define HM_SW_RST BIT(22) 182#define HM_MEM_FORCE_WR BIT(21) 183#define HM_DB_ERR_GEN BIT(20) 184#define HM_SB_ERR_GEN BIT(19) 185#define HM_CACHED_PIO_EN BIT(18) 186#define HM_CACHED_PROM_EN BIT(17) 187#define HM_PE_SYS_COR_ERE BIT(16) 188#define HM_GLOBAL_ECC_EN BIT(15) 189#define HM_IO_COH_EN BIT(14) 190#define HM_INT_EN BIT(13) 191#define HM_DATA_CHK_EN BIT(12) 192#define HM_REF_EN BIT(11) 193#define HM_BAD_SYSWR_ERE BIT(10) 194#define HM_BAD_SYSRD_ERE BIT(9) 195#define HM_SYSSTATE_ERE BIT(8) 196#define HM_SYSCMD_ERE BIT(7) 197#define HM_NCOR_SYS_ERE BIT(6) 198#define HM_COR_SYS_ERE BIT(5) 199#define HM_DATA_ELMNT_ERE BIT(4) 200#define HM_MEM_ADDR_PROC_ERE BIT(3) 201#define HM_MEM_ADDR_IO_ERE BIT(2) 202#define HM_NCOR_MEM_ERE BIT(1) 203#define HM_COR_MEM_ERE BIT(0) 204 205/* Bits in the HEART_MEM_REF register. */ 206#define HEART_MEMREF_REFS(x) ((0xfUL & (x)) << 16) 207#define HEART_MEMREF_PERIOD(x) ((0xffffUL & (x))) 208#define HEART_MEMREF_REFS_VAL HEART_MEMREF_REFS(8) 209#define HEART_MEMREF_PERIOD_VAL HEART_MEMREF_PERIOD(0x4000) 210#define HEART_MEMREF_VAL (HEART_MEMREF_REFS_VAL | \ 211 HEART_MEMREF_PERIOD_VAL) 212 213/* Bits in the HEART_MEM_REQ_ARB register. */ 214#define HEART_MEMARB_IODIS (1 << 20) 215#define HEART_MEMARB_MAXPMWRQS (15 << 16) 216#define HEART_MEMARB_MAXPMRRQS (15 << 12) 217#define HEART_MEMARB_MAXPMRQS (15 << 8) 218#define HEART_MEMARB_MAXRRRQS (15 << 4) 219#define HEART_MEMARB_MAXGBRRQS (15) 220 221/* Bits in the HEART_MEMCFG<x> registers. */ 222#define HEART_MEMCFG_VALID 0x80000000 /* Bank is valid */ 223#define HEART_MEMCFG_DENSITY 0x01c00000 /* Mem density */ 224#define HEART_MEMCFG_SIZE_MASK 0x003f0000 /* Mem size mask */ 225#define HEART_MEMCFG_ADDR_MASK 0x000001ff /* Base addr mask */ 226#define HEART_MEMCFG_SIZE_SHIFT 16 /* Mem size shift */ 227#define HEART_MEMCFG_DENSITY_SHIFT 22 /* Density Shift */ 228#define HEART_MEMCFG_UNIT_SHIFT 25 /* Unit Shift, 32MB */ 229 230/* Bits in the HEART_STATUS register */ 231#define HEART_STAT_HSTL_SDRV BIT(14) 232#define HEART_STAT_FC_CR_OUT(x) BIT((x) + 12) 233#define HEART_STAT_DIR_CNNCT BIT(11) 234#define HEART_STAT_TRITON BIT(10) 235#define HEART_STAT_R4K BIT(9) 236#define HEART_STAT_BIG_ENDIAN BIT(8) 237#define HEART_STAT_PROC_SHFT 4 238#define HEART_STAT_PROC_MSK (0xfUL << HEART_STAT_PROC_SHFT) 239#define HEART_STAT_PROC_ACTIVE(x) (0x1UL << ((x) + HEART_STAT_PROC_SHFT)) 240#define HEART_STAT_WIDGET_ID 0xf 241 242/* Bits in the HEART_CAUSE register */ 243#define HC_PE_SYS_COR_ERR_MSK (0xfUL << 60) 244#define HC_PE_SYS_COR_ERR(x) BIT((x) + 60) 245#define HC_PIOWDB_OFLOW BIT(44) 246#define HC_PIORWRB_OFLOW BIT(43) 247#define HC_PIUR_ACC_ERR BIT(42) 248#define HC_BAD_SYSWR_ERR BIT(41) 249#define HC_BAD_SYSRD_ERR BIT(40) 250#define HC_SYSSTATE_ERR_MSK (0xfUL << 36) 251#define HC_SYSSTATE_ERR(x) BIT((x) + 36) 252#define HC_SYSCMD_ERR_MSK (0xfUL << 32) 253#define HC_SYSCMD_ERR(x) BIT((x) + 32) 254#define HC_NCOR_SYSAD_ERR_MSK (0xfUL << 28) 255#define HC_NCOR_SYSAD_ERR(x) BIT((x) + 28) 256#define HC_COR_SYSAD_ERR_MSK (0xfUL << 24) 257#define HC_COR_SYSAD_ERR(x) BIT((x) + 24) 258#define HC_DATA_ELMNT_ERR_MSK (0xfUL << 20) 259#define HC_DATA_ELMNT_ERR(x) BIT((x) + 20) 260#define HC_WIDGET_ERR BIT(16) 261#define HC_MEM_ADDR_ERR_PROC_MSK (0xfUL << 4) 262#define HC_MEM_ADDR_ERR_PROC(x) BIT((x) + 4) 263#define HC_MEM_ADDR_ERR_IO BIT(2) 264#define HC_NCOR_MEM_ERR BIT(1) 265#define HC_COR_MEM_ERR BIT(0) 266 267/* 268 * HEART has 64 interrupt vectors available to it, subdivided into five 269 * priority levels. They are numbered 0 to 63. 270 */ 271#define HEART_NUM_IRQS 64 272 273/* 274 * These are the five interrupt priority levels and their corresponding 275 * CPU IPx interrupt pins. 276 * 277 * Level 4 - Error Interrupts. 278 * Level 3 - HEART timer interrupt. 279 * Level 2 - CPU IPI, CPU debug, power putton, general device interrupts. 280 * Level 1 - General device interrupts. 281 * Level 0 - General device GFX flow control interrupts. 282 */ 283#define HEART_L4_INT_MASK 0xfff8000000000000ULL /* IP6 */ 284#define HEART_L3_INT_MASK 0x0004000000000000ULL /* IP5 */ 285#define HEART_L2_INT_MASK 0x0003ffff00000000ULL /* IP4 */ 286#define HEART_L1_INT_MASK 0x00000000ffff0000ULL /* IP3 */ 287#define HEART_L0_INT_MASK 0x000000000000ffffULL /* IP2 */ 288 289/* HEART L0 Interrupts (Low Priority) */ 290#define HEART_L0_INT_GENERIC 0 291#define HEART_L0_INT_FLOW_CTRL_HWTR_0 1 292#define HEART_L0_INT_FLOW_CTRL_HWTR_1 2 293 294/* HEART L2 Interrupts (High Priority) */ 295#define HEART_L2_INT_RESCHED_CPU_0 46 296#define HEART_L2_INT_RESCHED_CPU_1 47 297#define HEART_L2_INT_CALL_CPU_0 48 298#define HEART_L2_INT_CALL_CPU_1 49 299 300/* HEART L3 Interrupts (Compare/Counter Timer) */ 301#define HEART_L3_INT_TIMER 50 302 303/* HEART L4 Interrupts (Errors) */ 304#define HEART_L4_INT_XWID_ERR_9 51 305#define HEART_L4_INT_XWID_ERR_A 52 306#define HEART_L4_INT_XWID_ERR_B 53 307#define HEART_L4_INT_XWID_ERR_C 54 308#define HEART_L4_INT_XWID_ERR_D 55 309#define HEART_L4_INT_XWID_ERR_E 56 310#define HEART_L4_INT_XWID_ERR_F 57 311#define HEART_L4_INT_XWID_ERR_XBOW 58 312#define HEART_L4_INT_CPU_BUS_ERR_0 59 313#define HEART_L4_INT_CPU_BUS_ERR_1 60 314#define HEART_L4_INT_CPU_BUS_ERR_2 61 315#define HEART_L4_INT_CPU_BUS_ERR_3 62 316#define HEART_L4_INT_HEART_EXCP 63 317 318extern struct ip30_heart_regs __iomem *heart_regs; 319 320#define heart_read ____raw_readq 321#define heart_write ____raw_writeq 322 323#endif /* __ASM_SGI_HEART_H */ 324