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usr
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src
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linux-headers-6.8.0-36
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arch
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mips
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include
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asm
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sgi
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drwxr-xr-x
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heart.h
/* SPDX-License-Identifier: GPL-2.0 */ /* * HEART chip definitions * * Copyright (C) 2004-2007 Stanislaw Skowronek <skylark@unaligned.org> * 2009 Johannes Dickgreber <tanzy@gmx.de> * 2007-2015 Joshua Kinard <kumba@gentoo.org> */ #ifndef __ASM_SGI_HEART_H #define __ASM_SGI_HEART_H #include <linux/types.h> #include <linux/time.h> /* * There are 8 DIMM slots on an IP30 system * board, which are grouped into four banks */ #define HEART_MEMORY_BANKS 4 /* HEART can support up to four CPUs */ #define HEART_MAX_CPUS 4 #define HEART_XKPHYS_BASE ((void *)(IO_BASE | 0x000000000ff00000ULL)) /** * struct ip30_heart_regs - struct that maps IP30 HEART registers. * @mode: HEART_MODE - Purpose Unknown, machine reset called from here. * @sdram_mode: HEART_SDRAM_MODE - purpose unknown. * @mem_refresh: HEART_MEM_REF - purpose unknown. * @mem_req_arb: HEART_MEM_REQ_ARB - purpose unknown. * @mem_cfg.q: union for 64bit access to HEART_MEMCFG - 4x 64bit registers. * @mem_cfg.l: union for 32bit access to HEART_MEMCFG - 8x 32bit registers. * @fc_mode: HEART_FC_MODE - Purpose Unknown, possibly for GFX flow control. * @fc_timer_limit: HEART_FC_TIMER_LIMIT - purpose unknown. * @fc_addr: HEART_FC0_ADDR, HEART_FC1_ADDR - purpose unknown. * @fc_credit_cnt: HEART_FC0_CR_CNT, HEART_FC1_CR_CNT - purpose unknown. * @fc_timer: HEART_FC0_TIMER, HEART_FC1_TIMER - purpose unknown. * @status: HEART_STATUS - HEART status information. * @bus_err_addr: HEART_BERR_ADDR - likely contains addr of recent SIGBUS. * @bus_err_misc: HEART_BERR_MISC - purpose unknown. * @mem_err_addr: HEART_MEMERR_ADDR - likely contains addr of recent mem err. * @mem_err_data: HEART_MEMERR_DATA - purpose unknown. * @piur_acc_err: HEART_PIUR_ACC_ERR - likely for access err to HEART regs. * @mlan_clock_div: HEART_MLAN_CLK_DIV - MicroLAN clock divider. * @mlan_ctrl: HEART_MLAN_CTL - MicroLAN control. * @__pad0: 0x0f40 bytes of padding -> next HEART register 0x01000. * @undefined: Undefined/diag register, write to it triggers PIUR_ACC_ERR. * @__pad1: 0xeff8 bytes of padding -> next HEART register 0x10000. * @imr: HEART_IMR0 to HEART_IMR3 - per-cpu interrupt mask register. * @set_isr: HEART_SET_ISR - set interrupt status register. * @clear_isr: HEART_CLR_ISR - clear interrupt status register. * @isr: HEART_ISR - interrupt status register (read-only). * @imsr: HEART_IMSR - purpose unknown. * @cause: HEART_CAUSE - HEART cause information. * @__pad2: 0xffb8 bytes of padding -> next HEART register 0x20000. * @count: HEART_COUNT - 52-bit counter. * @__pad3: 0xfff8 bytes of padding -> next HEART register 0x30000. * @compare: HEART_COMPARE - 24-bit compare. * @__pad4: 0xfff8 bytes of padding -> next HEART register 0x40000. * @trigger: HEART_TRIGGER - purpose unknown. * @__pad5: 0xfff8 bytes of padding -> next HEART register 0x50000. * @cpuid: HEART_PRID - contains CPU ID of CPU currently accessing HEART. * @__pad6: 0xfff8 bytes of padding -> next HEART register 0x60000. * @sync: HEART_SYNC - purpose unknown. * * HEART is the main system controller ASIC for IP30 system. It incorporates * a memory controller, interrupt status/cause/set/clear management, basic * timer with count/compare, and other functionality. For Linux, not all of * HEART's functions are fully understood. * * Implementation note: All HEART registers are 64bits-wide, but the mem_cfg * register only reports correct values if queried in 32bits. Hence the need * for a union. Even though mem_cfg.l has 8 array slots, we only ever query * up to 4 of those. IP30 has 8 DIMM slots arranged into 4 banks, w/ 2 DIMMs * per bank. Each 32bit read accesses one of these banks. Perhaps HEART was * designed to address up to 8 banks (16 DIMMs)? We may never know. */ struct ip30_heart_regs { /* 0x0ff00000 */ u64 mode; /* + 0x00000 */ /* Memory */ u64 sdram_mode; /* + 0x00008 */ u64 mem_refresh; /* + 0x00010 */ u64 mem_req_arb; /* + 0x00018 */ union { u64 q[HEART_MEMORY_BANKS]; /* readq() */ u32 l[HEART_MEMORY_BANKS * 2]; /* readl() */ } mem_cfg; /* + 0x00020 */ /* Flow control (gfx?) */ u64 fc_mode; /* + 0x00040 */ u64 fc_timer_limit; /* + 0x00048 */ u64 fc_addr[2]; /* + 0x00050 */ u64 fc_credit_cnt[2]; /* + 0x00060 */ u64 fc_timer[2]; /* + 0x00070 */ /* Status */ u64 status; /* + 0x00080 */ /* Bus error */ u64 bus_err_addr; /* + 0x00088 */ u64 bus_err_misc; /* + 0x00090 */ /* Memory error */ u64 mem_err_addr; /* + 0x00098 */ u64 mem_err_data; /* + 0x000a0 */ /* Misc */ u64 piur_acc_err; /* + 0x000a8 */ u64 mlan_clock_div; /* + 0x000b0 */ u64 mlan_ctrl; /* + 0x000b8 */ u64 __pad0[0x01e8]; /* + 0x000c0 + 0x0f40 */ /* Undefined */ u64 undefined; /* + 0x01000 */ u64 __pad1[0x1dff]; /* + 0x01008 + 0xeff8 */ /* Interrupts */ u64 imr[HEART_MAX_CPUS]; /* + 0x10000 */ u64 set_isr; /* + 0x10020 */ u64 clear_isr; /* + 0x10028 */ u64 isr; /* + 0x10030 */ u64 imsr; /* + 0x10038 */ u64 cause; /* + 0x10040 */ u64 __pad2[0x1ff7]; /* + 0x10048 + 0xffb8 */ /* Timer */ u64 count; /* + 0x20000 */ u64 __pad3[0x1fff]; /* + 0x20008 + 0xfff8 */ u64 compare; /* + 0x30000 */ u64 __pad4[0x1fff]; /* + 0x30008 + 0xfff8 */ u64 trigger; /* + 0x40000 */ u64 __pad5[0x1fff]; /* + 0x40008 + 0xfff8 */ /* Misc */ u64 cpuid; /* + 0x50000 */ u64 __pad6[0x1fff]; /* + 0x50008 + 0xfff8 */ u64 sync; /* + 0x60000 */ }; /* For timer-related bits. */ #define HEART_NS_PER_CYCLE 80 #define HEART_CYCLES_PER_SEC (NSEC_PER_SEC / HEART_NS_PER_CYCLE) /* * XXX: Everything below this comment will either go away or be cleaned * up to fit in better with Linux. A lot of the bit definitions for * HEART were derived from IRIX's sys/RACER/heart.h header file. */ /* HEART Masks */ #define HEART_ATK_MASK 0x0007ffffffffffff /* HEART attack mask */ #define HEART_ACK_ALL_MASK 0xffffffffffffffff /* Ack everything */ #define HEART_CLR_ALL_MASK 0x0000000000000000 /* Clear all */ #define HEART_BR_ERR_MASK 0x7ff8000000000000 /* BRIDGE error mask */ #define HEART_CPU0_ERR_MASK 0x8ff8000000000000 /* CPU0 error mask */ #define HEART_CPU1_ERR_MASK 0x97f8000000000000 /* CPU1 error mask */ #define HEART_CPU2_ERR_MASK 0xa7f8000000000000 /* CPU2 error mask */ #define HEART_CPU3_ERR_MASK 0xc7f8000000000000 /* CPU3 error mask */ #define HEART_ERR_MASK 0x1ff /* HEART error mask */ #define HEART_ERR_MASK_START 51 /* HEART error start */ #define HEART_ERR_MASK_END 63 /* HEART error end */ /* Bits in the HEART_MODE register. */ #define HM_PROC_DISABLE_SHFT 60 #define HM_PROC_DISABLE_MSK (0xfUL << HM_PROC_DISABLE_SHFT) #define HM_PROC_DISABLE(x) (0x1UL << (x) + HM_PROC_DISABLE_SHFT) #define HM_MAX_PSR (0x7UL << 57) #define HM_MAX_IOSR (0x7UL << 54) #define HM_MAX_PEND_IOSR (0x7UL << 51) #define HM_TRIG_SRC_SEL_MSK (0x7UL << 48) #define HM_TRIG_HEART_EXC (0x0UL << 48) #define HM_TRIG_REG_BIT (0x1UL << 48) #define HM_TRIG_SYSCLK (0x2UL << 48) #define HM_TRIG_MEMCLK_2X (0x3UL << 48) #define HM_TRIG_MEMCLK (0x4UL << 48) #define HM_TRIG_IOCLK (0x5UL << 48) #define HM_PIU_TEST_MODE (0xfUL << 40) #define HM_GP_FLAG_MSK (0xfUL << 36) #define HM_GP_FLAG(x) BIT((x) + 36) #define HM_MAX_PROC_HYST (0xfUL << 32) #define HM_LLP_WRST_AFTER_RST BIT(28) #define HM_LLP_LINK_RST BIT(27) #define HM_LLP_WARM_RST BIT(26) #define HM_COR_ECC_LCK BIT(25) #define HM_REDUCED_PWR BIT(24) #define HM_COLD_RST BIT(23) #define HM_SW_RST BIT(22) #define HM_MEM_FORCE_WR BIT(21) #define HM_DB_ERR_GEN BIT(20) #define HM_SB_ERR_GEN BIT(19) #define HM_CACHED_PIO_EN BIT(18) #define HM_CACHED_PROM_EN BIT(17) #define HM_PE_SYS_COR_ERE BIT(16) #define HM_GLOBAL_ECC_EN BIT(15) #define HM_IO_COH_EN BIT(14) #define HM_INT_EN BIT(13) #define HM_DATA_CHK_EN BIT(12) #define HM_REF_EN BIT(11) #define HM_BAD_SYSWR_ERE BIT(10) #define HM_BAD_SYSRD_ERE BIT(9) #define HM_SYSSTATE_ERE BIT(8) #define HM_SYSCMD_ERE BIT(7) #define HM_NCOR_SYS_ERE BIT(6) #define HM_COR_SYS_ERE BIT(5) #define HM_DATA_ELMNT_ERE BIT(4) #define HM_MEM_ADDR_PROC_ERE BIT(3) #define HM_MEM_ADDR_IO_ERE BIT(2) #define HM_NCOR_MEM_ERE BIT(1) #define HM_COR_MEM_ERE BIT(0) /* Bits in the HEART_MEM_REF register. */ #define HEART_MEMREF_REFS(x) ((0xfUL & (x)) << 16) #define HEART_MEMREF_PERIOD(x) ((0xffffUL & (x))) #define HEART_MEMREF_REFS_VAL HEART_MEMREF_REFS(8) #define HEART_MEMREF_PERIOD_VAL HEART_MEMREF_PERIOD(0x4000) #define HEART_MEMREF_VAL (HEART_MEMREF_REFS_VAL | \ HEART_MEMREF_PERIOD_VAL) /* Bits in the HEART_MEM_REQ_ARB register. */ #define HEART_MEMARB_IODIS (1 << 20) #define HEART_MEMARB_MAXPMWRQS (15 << 16) #define HEART_MEMARB_MAXPMRRQS (15 << 12) #define HEART_MEMARB_MAXPMRQS (15 << 8) #define HEART_MEMARB_MAXRRRQS (15 << 4) #define HEART_MEMARB_MAXGBRRQS (15) /* Bits in the HEART_MEMCFG<x> registers. */ #define HEART_MEMCFG_VALID 0x80000000 /* Bank is valid */ #define HEART_MEMCFG_DENSITY 0x01c00000 /* Mem density */ #define HEART_MEMCFG_SIZE_MASK 0x003f0000 /* Mem size mask */ #define HEART_MEMCFG_ADDR_MASK 0x000001ff /* Base addr mask */ #define HEART_MEMCFG_SIZE_SHIFT 16 /* Mem size shift */ #define HEART_MEMCFG_DENSITY_SHIFT 22 /* Density Shift */ #define HEART_MEMCFG_UNIT_SHIFT 25 /* Unit Shift, 32MB */ /* Bits in the HEART_STATUS register */ #define HEART_STAT_HSTL_SDRV BIT(14) #define HEART_STAT_FC_CR_OUT(x) BIT((x) + 12) #define HEART_STAT_DIR_CNNCT BIT(11) #define HEART_STAT_TRITON BIT(10) #define HEART_STAT_R4K BIT(9) #define HEART_STAT_BIG_ENDIAN BIT(8) #define HEART_STAT_PROC_SHFT 4 #define HEART_STAT_PROC_MSK (0xfUL << HEART_STAT_PROC_SHFT) #define HEART_STAT_PROC_ACTIVE(x) (0x1UL << ((x) + HEART_STAT_PROC_SHFT)) #define HEART_STAT_WIDGET_ID 0xf /* Bits in the HEART_CAUSE register */ #define HC_PE_SYS_COR_ERR_MSK (0xfUL << 60) #define HC_PE_SYS_COR_ERR(x) BIT((x) + 60) #define HC_PIOWDB_OFLOW BIT(44) #define HC_PIORWRB_OFLOW BIT(43) #define HC_PIUR_ACC_ERR BIT(42) #define HC_BAD_SYSWR_ERR BIT(41) #define HC_BAD_SYSRD_ERR BIT(40) #define HC_SYSSTATE_ERR_MSK (0xfUL << 36) #define HC_SYSSTATE_ERR(x) BIT((x) + 36) #define HC_SYSCMD_ERR_MSK (0xfUL << 32) #define HC_SYSCMD_ERR(x) BIT((x) + 32) #define HC_NCOR_SYSAD_ERR_MSK (0xfUL << 28) #define HC_NCOR_SYSAD_ERR(x) BIT((x) + 28) #define HC_COR_SYSAD_ERR_MSK (0xfUL << 24) #define HC_COR_SYSAD_ERR(x) BIT((x) + 24) #define HC_DATA_ELMNT_ERR_MSK (0xfUL << 20) #define HC_DATA_ELMNT_ERR(x) BIT((x) + 20) #define HC_WIDGET_ERR BIT(16) #define HC_MEM_ADDR_ERR_PROC_MSK (0xfUL << 4) #define HC_MEM_ADDR_ERR_PROC(x) BIT((x) + 4) #define HC_MEM_ADDR_ERR_IO BIT(2) #define HC_NCOR_MEM_ERR BIT(1) #define HC_COR_MEM_ERR BIT(0) /* * HEART has 64 interrupt vectors available to it, subdivided into five * priority levels. They are numbered 0 to 63. */ #define HEART_NUM_IRQS 64 /* * These are the five interrupt priority levels and their corresponding * CPU IPx interrupt pins. * * Level 4 - Error Interrupts. * Level 3 - HEART timer interrupt. * Level 2 - CPU IPI, CPU debug, power putton, general device interrupts. * Level 1 - General device interrupts. * Level 0 - General device GFX flow control interrupts. */ #define HEART_L4_INT_MASK 0xfff8000000000000ULL /* IP6 */ #define HEART_L3_INT_MASK 0x0004000000000000ULL /* IP5 */ #define HEART_L2_INT_MASK 0x0003ffff00000000ULL /* IP4 */ #define HEART_L1_INT_MASK 0x00000000ffff0000ULL /* IP3 */ #define HEART_L0_INT_MASK 0x000000000000ffffULL /* IP2 */ /* HEART L0 Interrupts (Low Priority) */ #define HEART_L0_INT_GENERIC 0 #define HEART_L0_INT_FLOW_CTRL_HWTR_0 1 #define HEART_L0_INT_FLOW_CTRL_HWTR_1 2 /* HEART L2 Interrupts (High Priority) */ #define HEART_L2_INT_RESCHED_CPU_0 46 #define HEART_L2_INT_RESCHED_CPU_1 47 #define HEART_L2_INT_CALL_CPU_0 48 #define HEART_L2_INT_CALL_CPU_1 49 /* HEART L3 Interrupts (Compare/Counter Timer) */ #define HEART_L3_INT_TIMER 50 /* HEART L4 Interrupts (Errors) */ #define HEART_L4_INT_XWID_ERR_9 51 #define HEART_L4_INT_XWID_ERR_A 52 #define HEART_L4_INT_XWID_ERR_B 53 #define HEART_L4_INT_XWID_ERR_C 54 #define HEART_L4_INT_XWID_ERR_D 55 #define HEART_L4_INT_XWID_ERR_E 56 #define HEART_L4_INT_XWID_ERR_F 57 #define HEART_L4_INT_XWID_ERR_XBOW 58 #define HEART_L4_INT_CPU_BUS_ERR_0 59 #define HEART_L4_INT_CPU_BUS_ERR_1 60 #define HEART_L4_INT_CPU_BUS_ERR_2 61 #define HEART_L4_INT_CPU_BUS_ERR_3 62 #define HEART_L4_INT_HEART_EXCP 63 extern struct ip30_heart_regs __iomem *heart_regs; #define heart_read ____raw_readq #define heart_write ____raw_writeq #endif /* __ASM_SGI_HEART_H */
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