MIPS: add support for SGI Octane (IP30)

This changeset adds support for SGI Octane/Octane2 workstations.

Signed-off-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
Signed-off-by: Paul Burton <paulburton@kernel.org>
Cc: Paul Burton <paul.burton@mips.com>
Cc: James Hogan <jhogan@kernel.org>
Cc: linux-mips@vger.kernel.org
Cc: linux-kernel@vger.kernel.org

7 files changed, 523 insertions, 0 deletions

diff --git a/arch/mips/include/asm/mach-ip30/cpu-feature-overrides.h b/arch/mips/include/asm/mach-ip30/cpu-feature-overrides.h
new file mode 100644
index 000000000000..cfa02f3d25df
--- /dev/null
+++ b/arch/mips/include/asm/mach-ip30/cpu-feature-overrides.h
@@ -0,0 +1,83 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * IP30/Octane cpu-features overrides.
+ *
+ * Copyright (C) 2003 Ralf Baechle <ralf@linux-mips.org>
+ *		 2004-2007 Stanislaw Skowronek <skylark@unaligned.org>
+ *		 2009 Johannes Dickgreber <tanzy@gmx.de>
+ *		 2015 Joshua Kinard <kumba@gentoo.org>
+ *
+ */
+#ifndef __ASM_MACH_IP30_CPU_FEATURE_OVERRIDES_H
+#define __ASM_MACH_IP30_CPU_FEATURE_OVERRIDES_H
+
+#include <asm/cpu.h>
+
+/*
+ * IP30 only supports R1[024]000 processors, all using the same config
+ */
+#define cpu_has_tlb			1
+#define cpu_has_tlbinv			0
+#define cpu_has_segments		0
+#define cpu_has_eva			0
+#define cpu_has_htw			0
+#define cpu_has_rixiex			0
+#define cpu_has_maar			0
+#define cpu_has_rw_llb			0
+#define cpu_has_3kex			0
+#define cpu_has_4kex			1
+#define cpu_has_3k_cache		0
+#define cpu_has_4k_cache		1
+#define cpu_has_6k_cache		0
+#define cpu_has_8k_cache		0
+#define cpu_has_tx39_cache		0
+#define cpu_has_fpu			1
+#define cpu_has_nofpuex			0
+#define cpu_has_32fpr			1
+#define cpu_has_counter			1
+#define cpu_has_watch			1
+#define cpu_has_64bits			1
+#define cpu_has_divec			0
+#define cpu_has_vce			0
+#define cpu_has_cache_cdex_p		0
+#define cpu_has_cache_cdex_s		0
+#define cpu_has_prefetch		1
+#define cpu_has_mcheck			0
+#define cpu_has_ejtag			0
+#define cpu_has_llsc			1
+#define cpu_has_mips16			0
+#define cpu_has_mdmx			0
+#define cpu_has_mips3d			0
+#define cpu_has_smartmips		0
+#define cpu_has_rixi			0
+#define cpu_has_xpa			0
+#define cpu_has_vtag_icache		0
+#define cpu_has_dc_aliases		0
+#define cpu_has_ic_fills_f_dc		0
+
+#define cpu_icache_snoops_remote_store	1
+
+#define cpu_has_mips32r1		0
+#define cpu_has_mips32r2		0
+#define cpu_has_mips64r1		0
+#define cpu_has_mips64r2		0
+#define cpu_has_mips32r6		0
+#define cpu_has_mips64r6		0
+
+#define cpu_has_dsp			0
+#define cpu_has_dsp2			0
+#define cpu_has_mipsmt			0
+#define cpu_has_userlocal		0
+#define cpu_has_inclusive_pcaches	1
+#define cpu_hwrena_impl_bits		0
+#define cpu_has_perf_cntr_intr_bit	0
+#define cpu_has_vz			0
+#define cpu_has_fre			0
+#define cpu_has_cdmm			0
+
+#define cpu_dcache_line_size()		32
+#define cpu_icache_line_size()		64
+#define cpu_scache_line_size()		128
+
+#endif /* __ASM_MACH_IP30_CPU_FEATURE_OVERRIDES_H */
+
diff --git a/arch/mips/include/asm/mach-ip30/irq.h b/arch/mips/include/asm/mach-ip30/irq.h
new file mode 100644
index 000000000000..e5c3dd965266
--- /dev/null
+++ b/arch/mips/include/asm/mach-ip30/irq.h
@@ -0,0 +1,87 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * HEART IRQ defines
+ *
+ * Copyright (C) 2009 Johannes Dickgreber <tanzy@gmx.de>
+ *		 2014-2016 Joshua Kinard <kumba@gentoo.org>
+ *
+ */
+
+#ifndef __ASM_MACH_IP30_IRQ_H
+#define __ASM_MACH_IP30_IRQ_H
+
+/*
+ * HEART has 64 hardware interrupts, but use 128 to leave room for a few
+ * software interrupts as well (such as the CPU timer interrupt.
+ */
+#define NR_IRQS				128
+
+extern void __init ip30_install_ipi(void);
+
+/*
+ * 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
+
+/*
+ * Power Switch is wired via BaseIO BRIDGE slot #6.
+ *
+ * ACFail is wired via BaseIO BRIDGE slot #7.
+ */
+#define IP30_POWER_IRQ		HEART_L2_INT_POWER_BTN
+
+#include_next <irq.h>
+
+#define IP30_HEART_L0_IRQ	(MIPS_CPU_IRQ_BASE + 2)
+#define IP30_HEART_L1_IRQ	(MIPS_CPU_IRQ_BASE + 3)
+#define IP30_HEART_L2_IRQ	(MIPS_CPU_IRQ_BASE + 4)
+#define IP30_HEART_TIMER_IRQ	(MIPS_CPU_IRQ_BASE + 5)
+#define IP30_HEART_ERR_IRQ	(MIPS_CPU_IRQ_BASE + 6)
+
+#endif /* __ASM_MACH_IP30_IRQ_H */
diff --git a/arch/mips/include/asm/mach-ip30/kernel-entry-init.h b/arch/mips/include/asm/mach-ip30/kernel-entry-init.h
new file mode 100644
index 000000000000..be0472c977d8
--- /dev/null
+++ b/arch/mips/include/asm/mach-ip30/kernel-entry-init.h
@@ -0,0 +1,13 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+
+#ifndef __ASM_MACH_IP30_KERNEL_ENTRY_H
+#define __ASM_MACH_IP30_KERNEL_ENTRY_H
+
+	.macro  kernel_entry_setup
+	.endm
+
+	.macro	smp_slave_setup
+	move	gp, a0
+	.endm
+
+#endif /* __ASM_MACH_IP30_KERNEL_ENTRY_H */
diff --git a/arch/mips/include/asm/mach-ip30/mangle-port.h b/arch/mips/include/asm/mach-ip30/mangle-port.h
new file mode 100644
index 000000000000..f3e1262a2d5e
--- /dev/null
+++ b/arch/mips/include/asm/mach-ip30/mangle-port.h
@@ -0,0 +1,22 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2003, 2004 Ralf Baechle
+ */
+#ifndef __ASM_MACH_IP30_MANGLE_PORT_H
+#define __ASM_MACH_IP30_MANGLE_PORT_H
+
+#define __swizzle_addr_b(port)	((port)^3)
+#define __swizzle_addr_w(port)	((port)^2)
+#define __swizzle_addr_l(port)	(port)
+#define __swizzle_addr_q(port)	(port)
+
+#define ioswabb(a, x)		(x)
+#define __mem_ioswabb(a, x)	(x)
+#define ioswabw(a, x)		(x)
+#define __mem_ioswabw(a, x)	cpu_to_le16(x)
+#define ioswabl(a, x)		(x)
+#define __mem_ioswabl(a, x)	cpu_to_le32(x)
+#define ioswabq(a, x)		(x)
+#define __mem_ioswabq(a, x)	cpu_to_le64(x)
+
+#endif /* __ASM_MACH_IP30_MANGLE_PORT_H */
diff --git a/arch/mips/include/asm/mach-ip30/spaces.h b/arch/mips/include/asm/mach-ip30/spaces.h
new file mode 100644
index 000000000000..c8a302dfbe05
--- /dev/null
+++ b/arch/mips/include/asm/mach-ip30/spaces.h
@@ -0,0 +1,20 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2016 Joshua Kinard <kumba@gentoo.org>
+ *
+ */
+#ifndef _ASM_MACH_IP30_SPACES_H
+#define _ASM_MACH_IP30_SPACES_H
+
+/*
+ * Memory in IP30/Octane is offset 512MB in the physical address space.
+ */
+#define PHYS_OFFSET	_AC(0x20000000, UL)
+
+#ifdef CONFIG_64BIT
+#define CAC_BASE	_AC(0xA800000000000000, UL)
+#endif
+
+#include <asm/mach-generic/spaces.h>
+
+#endif /* _ASM_MACH_IP30_SPACES_H */
diff --git a/arch/mips/include/asm/mach-ip30/war.h b/arch/mips/include/asm/mach-ip30/war.h
new file mode 100644
index 000000000000..a98ba204f183
--- /dev/null
+++ b/arch/mips/include/asm/mach-ip30/war.h
@@ -0,0 +1,26 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2002, 2004, 2007 by Ralf Baechle <ralf@linux-mips.org>
+ */
+#ifndef __ASM_MIPS_MACH_IP30_WAR_H
+#define __ASM_MIPS_MACH_IP30_WAR_H
+
+#define R4600_V1_INDEX_ICACHEOP_WAR	0
+#define R4600_V1_HIT_CACHEOP_WAR	0
+#define R4600_V2_HIT_CACHEOP_WAR	0
+#define MIPS_CACHE_SYNC_WAR		0
+#define BCM1250_M3_WAR			0
+#define SIBYTE_1956_WAR			0
+#define MIPS4K_ICACHE_REFILL_WAR	0
+#define MIPS34K_MISSED_ITLB_WAR		0
+#define R5432_CP0_INTERRUPT_WAR		0
+#define TX49XX_ICACHE_INDEX_INV_WAR	0
+#define ICACHE_REFILLS_WORKAROUND_WAR	0
+
+#ifdef CONFIG_CPU_R10000
+#define R10000_LLSC_WAR			1
+#else
+#define R10000_LLSC_WAR			0
+#endif
+
+#endif /* __ASM_MIPS_MACH_IP30_WAR_H */
diff --git a/arch/mips/include/asm/sgi/heart.h b/arch/mips/include/asm/sgi/heart.h
new file mode 100644
index 000000000000..c423221b4792
--- /dev/null
+++ b/arch/mips/include/asm/sgi/heart.h
@@ -0,0 +1,272 @@
+/* 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)
+
+extern struct ip30_heart_regs __iomem *heart_regs;
+
+#define heart_read	____raw_readq
+#define heart_write	____raw_writeq
+
+#endif /* __ASM_SGI_HEART_H */