124 lines
3.0 KiB
C
124 lines
3.0 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* IBM ASM Service Processor Device Driver
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*
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* Copyright (C) IBM Corporation, 2004
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*
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* Author: Max Asböck <amax@us.ibm.com>
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*/
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/* Condor service processor specific hardware definitions */
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#ifndef __IBMASM_CONDOR_H__
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#define __IBMASM_CONDOR_H__
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#include <asm/io.h>
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#define VENDORID_IBM 0x1014
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#define DEVICEID_RSA 0x010F
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#define GET_MFA_ADDR(x) (x & 0xFFFFFF00)
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#define MAILBOX_FULL(x) (x & 0x00000001)
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#define NO_MFAS_AVAILABLE 0xFFFFFFFF
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#define INBOUND_QUEUE_PORT 0x40 /* contains address of next free MFA */
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#define OUTBOUND_QUEUE_PORT 0x44 /* contains address of posted MFA */
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#define SP_INTR_MASK 0x00000008
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#define UART_INTR_MASK 0x00000010
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#define INTR_STATUS_REGISTER 0x13A0
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#define INTR_CONTROL_REGISTER 0x13A4
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#define SCOUT_COM_A_BASE 0x0000
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#define SCOUT_COM_B_BASE 0x0100
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#define SCOUT_COM_C_BASE 0x0200
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#define SCOUT_COM_D_BASE 0x0300
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static inline int sp_interrupt_pending(void __iomem *base_address)
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{
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return SP_INTR_MASK & readl(base_address + INTR_STATUS_REGISTER);
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}
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static inline int uart_interrupt_pending(void __iomem *base_address)
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{
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return UART_INTR_MASK & readl(base_address + INTR_STATUS_REGISTER);
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}
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static inline void ibmasm_enable_interrupts(void __iomem *base_address, int mask)
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{
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void __iomem *ctrl_reg = base_address + INTR_CONTROL_REGISTER;
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writel( readl(ctrl_reg) & ~mask, ctrl_reg);
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}
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static inline void ibmasm_disable_interrupts(void __iomem *base_address, int mask)
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{
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void __iomem *ctrl_reg = base_address + INTR_CONTROL_REGISTER;
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writel( readl(ctrl_reg) | mask, ctrl_reg);
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}
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static inline void enable_sp_interrupts(void __iomem *base_address)
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{
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ibmasm_enable_interrupts(base_address, SP_INTR_MASK);
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}
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static inline void disable_sp_interrupts(void __iomem *base_address)
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{
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ibmasm_disable_interrupts(base_address, SP_INTR_MASK);
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}
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static inline void enable_uart_interrupts(void __iomem *base_address)
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{
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ibmasm_enable_interrupts(base_address, UART_INTR_MASK);
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}
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static inline void disable_uart_interrupts(void __iomem *base_address)
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{
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ibmasm_disable_interrupts(base_address, UART_INTR_MASK);
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}
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#define valid_mfa(mfa) ( (mfa) != NO_MFAS_AVAILABLE )
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static inline u32 get_mfa_outbound(void __iomem *base_address)
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{
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int retry;
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u32 mfa;
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for (retry=0; retry<=10; retry++) {
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mfa = readl(base_address + OUTBOUND_QUEUE_PORT);
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if (valid_mfa(mfa))
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break;
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}
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return mfa;
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}
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static inline void set_mfa_outbound(void __iomem *base_address, u32 mfa)
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{
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writel(mfa, base_address + OUTBOUND_QUEUE_PORT);
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}
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static inline u32 get_mfa_inbound(void __iomem *base_address)
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{
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u32 mfa = readl(base_address + INBOUND_QUEUE_PORT);
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if (MAILBOX_FULL(mfa))
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return 0;
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return mfa;
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}
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static inline void set_mfa_inbound(void __iomem *base_address, u32 mfa)
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{
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writel(mfa, base_address + INBOUND_QUEUE_PORT);
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}
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static inline struct i2o_message *get_i2o_message(void __iomem *base_address, u32 mfa)
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{
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return (struct i2o_message *)(GET_MFA_ADDR(mfa) + base_address);
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}
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#endif /* __IBMASM_CONDOR_H__ */
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