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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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126186a055
It's useful to have access to struct ipic handle that just got created in ipic_init(). For example, if we want to setup an external IRQ with out a device node we need access ipic->irqhost to create the virtual to HW IRQ mapping and to set the IRQ sense. With this we can mimic the old sense array concept that existed in arch/ppc. Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
92 lines
3.7 KiB
C
92 lines
3.7 KiB
C
/*
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* include/asm-powerpc/ipic.h
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*
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* IPIC external definitions and structure.
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*
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* Maintainer: Kumar Gala <galak@kernel.crashing.org>
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*
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* Copyright 2005 Freescale Semiconductor, Inc
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*/
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#ifdef __KERNEL__
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#ifndef __ASM_IPIC_H__
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#define __ASM_IPIC_H__
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#include <linux/irq.h>
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/* Flags when we init the IPIC */
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#define IPIC_SPREADMODE_GRP_A 0x00000001
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#define IPIC_SPREADMODE_GRP_D 0x00000002
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#define IPIC_SPREADMODE_MIX_A 0x00000004
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#define IPIC_SPREADMODE_MIX_B 0x00000008
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#define IPIC_DISABLE_MCP_OUT 0x00000010
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#define IPIC_IRQ0_MCP 0x00000020
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/* IPIC registers offsets */
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#define IPIC_SICFR 0x00 /* System Global Interrupt Configuration Register */
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#define IPIC_SIVCR 0x04 /* System Global Interrupt Vector Register */
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#define IPIC_SIPNR_H 0x08 /* System Internal Interrupt Pending Register (HIGH) */
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#define IPIC_SIPNR_L 0x0C /* System Internal Interrupt Pending Register (LOW) */
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#define IPIC_SIPRR_A 0x10 /* System Internal Interrupt group A Priority Register */
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#define IPIC_SIPRR_B 0x14 /* System Internal Interrupt group B Priority Register */
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#define IPIC_SIPRR_C 0x18 /* System Internal Interrupt group C Priority Register */
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#define IPIC_SIPRR_D 0x1C /* System Internal Interrupt group D Priority Register */
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#define IPIC_SIMSR_H 0x20 /* System Internal Interrupt Mask Register (HIGH) */
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#define IPIC_SIMSR_L 0x24 /* System Internal Interrupt Mask Register (LOW) */
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#define IPIC_SICNR 0x28 /* System Internal Interrupt Control Register */
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#define IPIC_SEPNR 0x2C /* System External Interrupt Pending Register */
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#define IPIC_SMPRR_A 0x30 /* System Mixed Interrupt group A Priority Register */
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#define IPIC_SMPRR_B 0x34 /* System Mixed Interrupt group B Priority Register */
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#define IPIC_SEMSR 0x38 /* System External Interrupt Mask Register */
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#define IPIC_SECNR 0x3C /* System External Interrupt Control Register */
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#define IPIC_SERSR 0x40 /* System Error Status Register */
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#define IPIC_SERMR 0x44 /* System Error Mask Register */
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#define IPIC_SERCR 0x48 /* System Error Control Register */
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#define IPIC_SIFCR_H 0x50 /* System Internal Interrupt Force Register (HIGH) */
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#define IPIC_SIFCR_L 0x54 /* System Internal Interrupt Force Register (LOW) */
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#define IPIC_SEFCR 0x58 /* System External Interrupt Force Register */
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#define IPIC_SERFR 0x5C /* System Error Force Register */
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#define IPIC_SCVCR 0x60 /* System Critical Interrupt Vector Register */
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#define IPIC_SMVCR 0x64 /* System Management Interrupt Vector Register */
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enum ipic_prio_grp {
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IPIC_INT_GRP_A = IPIC_SIPRR_A,
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IPIC_INT_GRP_D = IPIC_SIPRR_D,
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IPIC_MIX_GRP_A = IPIC_SMPRR_A,
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IPIC_MIX_GRP_B = IPIC_SMPRR_B,
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};
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enum ipic_mcp_irq {
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IPIC_MCP_IRQ0 = 0,
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IPIC_MCP_WDT = 1,
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IPIC_MCP_SBA = 2,
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IPIC_MCP_PCI1 = 5,
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IPIC_MCP_PCI2 = 6,
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IPIC_MCP_MU = 7,
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};
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extern int ipic_set_priority(unsigned int irq, unsigned int priority);
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extern void ipic_set_highest_priority(unsigned int irq);
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extern void ipic_set_default_priority(void);
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extern void ipic_enable_mcp(enum ipic_mcp_irq mcp_irq);
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extern void ipic_disable_mcp(enum ipic_mcp_irq mcp_irq);
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extern u32 ipic_get_mcp_status(void);
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extern void ipic_clear_mcp_status(u32 mask);
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#ifdef CONFIG_PPC_MERGE
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extern struct ipic * ipic_init(struct device_node *node, unsigned int flags);
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extern unsigned int ipic_get_irq(void);
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#else
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extern void ipic_init(phys_addr_t phys_addr, unsigned int flags,
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unsigned int irq_offset,
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unsigned char *senses, unsigned int senses_count);
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extern int ipic_get_irq(void);
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#endif
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#endif /* __ASM_IPIC_H__ */
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#endif /* __KERNEL__ */
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