/* 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 < linux @ kumba . dev >
*/
#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 | 0 x000000000ff00000ULL))
/**
* 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 64 bit access to HEART_MEMCFG - 4 x 64 bit registers .
* @ mem_cfg . l : union for 32 bit access to HEART_MEMCFG - 8 x 32 bit 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 : 0 x0f40 bytes of padding - > next HEART register 0 x01000 .
* @ undefined : Undefined / diag register , write to it triggers PIUR_ACC_ERR .
* @ _ _ pad1 : 0 xeff8 bytes of padding - > next HEART register 0 x10000 .
* @ 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 : 0 xffb8 bytes of padding - > next HEART register 0 x20000 .
* @ count : HEART_COUNT - 52 - bit counter .
* @ _ _ pad3 : 0 xfff8 bytes of padding - > next HEART register 0 x30000 .
* @ compare : HEART_COMPARE - 24 - bit compare .
* @ _ _ pad4 : 0 xfff8 bytes of padding - > next HEART register 0 x40000 .
* @ trigger : HEART_TRIGGER - purpose unknown .
* @ _ _ pad5 : 0 xfff8 bytes of padding - > next HEART register 0 x50000 .
* @ cpuid : HEART_PRID - contains CPU ID of CPU currently accessing HEART .
* @ _ _ pad6 : 0 xfff8 bytes of padding - > next HEART register 0 x60000 .
* @ 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 64 bits - wide , but the mem_cfg
* register only reports correct values if queried in 32 bits . 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 32 bit 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[0 x01e8]; /* + 0x000c0 + 0x0f40 */
/* Undefined */
u64 undefined; /* + 0x01000 */
u64 __pad1[0 x1dff]; /* + 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[0 x1ff7]; /* + 0x10048 + 0xffb8 */
/* Timer */
u64 count; /* + 0x20000 */
u64 __pad3[0 x1fff]; /* + 0x20008 + 0xfff8 */
u64 compare; /* + 0x30000 */
u64 __pad4[0 x1fff]; /* + 0x30008 + 0xfff8 */
u64 trigger; /* + 0x40000 */
u64 __pad5[0 x1fff]; /* + 0x40008 + 0xfff8 */
/* Misc */
u64 cpuid; /* + 0x50000 */
u64 __pad6[0 x1fff]; /* + 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 0 x0007ffffffffffff /* HEART attack mask */
#define HEART_ACK_ALL_MASK 0 xffffffffffffffff /* Ack everything */
#define HEART_CLR_ALL_MASK 0 x0000000000000000 /* Clear all */
#define HEART_BR_ERR_MASK 0 x7ff8000000000000 /* BRIDGE error mask */
#define HEART_CPU0_ERR_MASK 0 x8ff8000000000000 /* CPU0 error mask */
#define HEART_CPU1_ERR_MASK 0 x97f8000000000000 /* CPU1 error mask */
#define HEART_CPU2_ERR_MASK 0 xa7f8000000000000 /* CPU2 error mask */
#define HEART_CPU3_ERR_MASK 0 xc7f8000000000000 /* CPU3 error mask */
#define HEART_ERR_MASK 0 x1ff /* 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 (0 xfUL << HM_PROC_DISABLE_SHFT)
#define HM_PROC_DISABLE(x) (0 x1UL << (x) + HM_PROC_DISABLE_SHFT)
#define HM_MAX_PSR (0 x7UL << 57 )
#define HM_MAX_IOSR (0 x7UL << 54 )
#define HM_MAX_PEND_IOSR (0 x7UL << 51 )
#define HM_TRIG_SRC_SEL_MSK (0 x7UL << 48 )
#define HM_TRIG_HEART_EXC (0 x0UL << 48 )
#define HM_TRIG_REG_BIT (0 x1UL << 48 )
#define HM_TRIG_SYSCLK (0 x2UL << 48 )
#define HM_TRIG_MEMCLK_2X (0 x3UL << 48 )
#define HM_TRIG_MEMCLK (0 x4UL << 48 )
#define HM_TRIG_IOCLK (0 x5UL << 48 )
#define HM_PIU_TEST_MODE (0 xfUL << 40 )
#define HM_GP_FLAG_MSK (0 xfUL << 36 )
#define HM_GP_FLAG(x) BIT((x) + 36 )
#define HM_MAX_PROC_HYST (0 xfUL << 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) ((0 xfUL & (x)) << 16 )
#define HEART_MEMREF_PERIOD(x) ((0 xffffUL & (x)))
#define HEART_MEMREF_REFS_VAL HEART_MEMREF_REFS(8 )
#define HEART_MEMREF_PERIOD_VAL HEART_MEMREF_PERIOD(0 x4000)
#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 0 x80000000 /* Bank is valid */
#define HEART_MEMCFG_DENSITY 0 x01c00000 /* Mem density */
#define HEART_MEMCFG_SIZE_MASK 0 x003f0000 /* Mem size mask */
#define HEART_MEMCFG_ADDR_MASK 0 x000001ff /* 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 (0 xfUL << HEART_STAT_PROC_SHFT)
#define HEART_STAT_PROC_ACTIVE(x) (0 x1UL << ((x) + HEART_STAT_PROC_SHFT))
#define HEART_STAT_WIDGET_ID 0 xf
/* Bits in the HEART_CAUSE register */
#define HC_PE_SYS_COR_ERR_MSK (0 xfUL << 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 (0 xfUL << 36 )
#define HC_SYSSTATE_ERR(x) BIT((x) + 36 )
#define HC_SYSCMD_ERR_MSK (0 xfUL << 32 )
#define HC_SYSCMD_ERR(x) BIT((x) + 32 )
#define HC_NCOR_SYSAD_ERR_MSK (0 xfUL << 28 )
#define HC_NCOR_SYSAD_ERR(x) BIT((x) + 28 )
#define HC_COR_SYSAD_ERR_MSK (0 xfUL << 24 )
#define HC_COR_SYSAD_ERR(x) BIT((x) + 24 )
#define HC_DATA_ELMNT_ERR_MSK (0 xfUL << 20 )
#define HC_DATA_ELMNT_ERR(x) BIT((x) + 20 )
#define HC_WIDGET_ERR BIT(16 )
#define HC_MEM_ADDR_ERR_PROC_MSK (0 xfUL << 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 0 xfff8000000000000ULL /* IP6 */
#define HEART_L3_INT_MASK 0 x0004000000000000ULL /* IP5 */
#define HEART_L2_INT_MASK 0 x0003ffff00000000ULL /* IP4 */
#define HEART_L1_INT_MASK 0 x00000000ffff0000ULL /* IP3 */
#define HEART_L0_INT_MASK 0 x000000000000ffffULL /* 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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