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Release 4.7 drivers/misc/ibmasm/lowlevel.h

Directory: drivers/misc/ibmasm
/*
 * IBM ASM Service Processor Device Driver
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 *
 * Copyright (C) IBM Corporation, 2004
 *
 * Author: Max Asböck <amax@us.ibm.com>
 *
 */

/* Condor service processor specific hardware definitions */

#ifndef __IBMASM_CONDOR_H__

#define __IBMASM_CONDOR_H__

#include <asm/io.h>


#define VENDORID_IBM	0x1014

#define DEVICEID_RSA	0x010F


#define GET_MFA_ADDR(x)  (x & 0xFFFFFF00)


#define MAILBOX_FULL(x)  (x & 0x00000001)


#define NO_MFAS_AVAILABLE     0xFFFFFFFF



#define INBOUND_QUEUE_PORT   0x40  
/* contains address of next free MFA */

#define OUTBOUND_QUEUE_PORT  0x44  
/* contains address of posted MFA    */


#define SP_INTR_MASK	0x00000008

#define UART_INTR_MASK	0x00000010


#define INTR_STATUS_REGISTER   0x13A0

#define INTR_CONTROL_REGISTER  0x13A4


#define SCOUT_COM_A_BASE         0x0000

#define SCOUT_COM_B_BASE         0x0100

#define SCOUT_COM_C_BASE         0x0200

#define SCOUT_COM_D_BASE         0x0300




static inline int sp_interrupt_pending(void __iomem *base_address)
{
	return SP_INTR_MASK & readl(base_address + INTR_STATUS_REGISTER);
}


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static inline int uart_interrupt_pending(void __iomem *base_address)
{
	return UART_INTR_MASK & readl(base_address + INTR_STATUS_REGISTER);
}


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static inline void ibmasm_enable_interrupts(void __iomem *base_address, int mask)
{
	void __iomem *ctrl_reg = base_address + INTR_CONTROL_REGISTER;
	writel( readl(ctrl_reg) & ~mask, ctrl_reg);
}


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static inline void ibmasm_disable_interrupts(void __iomem *base_address, int mask)
{
	void __iomem *ctrl_reg = base_address + INTR_CONTROL_REGISTER;
	writel( readl(ctrl_reg) | mask, ctrl_reg);
}


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static inline void enable_sp_interrupts(void __iomem *base_address)
{
	ibmasm_enable_interrupts(base_address, SP_INTR_MASK);
}


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static inline void disable_sp_interrupts(void __iomem *base_address)
{
	ibmasm_disable_interrupts(base_address, SP_INTR_MASK);
}


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static inline void enable_uart_interrupts(void __iomem *base_address)
{
	ibmasm_enable_interrupts(base_address, UART_INTR_MASK);
}


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static inline void disable_uart_interrupts(void __iomem *base_address)
{
	ibmasm_disable_interrupts(base_address, UART_INTR_MASK);
}


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#define valid_mfa(mfa)	( (mfa) != NO_MFAS_AVAILABLE )




static inline u32 get_mfa_outbound(void __iomem *base_address)
{
	int retry;
	u32 mfa;

	for (retry=0; retry<=10; retry++) {
		mfa = readl(base_address + OUTBOUND_QUEUE_PORT);
		if (valid_mfa(mfa))
			break;
	}
	return mfa;
}


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static inline void set_mfa_outbound(void __iomem *base_address, u32 mfa)
{
	writel(mfa, base_address + OUTBOUND_QUEUE_PORT);
}


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static inline u32 get_mfa_inbound(void __iomem *base_address)
{
	u32 mfa = readl(base_address + INBOUND_QUEUE_PORT);

	if (MAILBOX_FULL(mfa))
		return 0;

	return mfa;
}


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static inline void set_mfa_inbound(void __iomem *base_address, u32 mfa)
{
	writel(mfa, base_address + INBOUND_QUEUE_PORT);
}


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static inline struct i2o_message *get_i2o_message(void __iomem *base_address, u32 mfa)
{
	return (struct i2o_message *)(GET_MFA_ADDR(mfa) + base_address);
}


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#endif /* __IBMASM_CONDOR_H__ */

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Directory: drivers/misc/ibmasm



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