/*-
 * Copyright (c) 1997 Nicolas Souchu
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 *	$Id$
 *
 */
#ifndef __PPC_H
#define __PPC_H

/*
 * Parallel Port Chipset type.
 */
#define SMC_UNKNOWN	0x0
#define SMC_37C665GT	0x1
#define SMC_37C666GT	0x2
#define NS_UNKNOWN	0x3
#define NS_PC87332	0x4
#define NS_PC87306	0x5
#define INTEL_820191AA	0x6
#define GENERIC		0x7

/*
 * Generic structure to hold parallel port chipset info.
 */
struct ppc_data {
	int ppc_unit;
	int ppc_base;

	int ppc_type;

#define ppc_mode ppc_link.mode
#define ppc_epp ppc_link.epp_protocol
#define ppc_irq ppc_link.id_irq

	unsigned char ppc_flags;

	struct ppb_link ppc_link;
};

/*
 * Parallel Port Chipset errors.			XXX
 */
#define PPC_ENOPORT		9

/*
 * Parallel Port Chipset registers.
 */
#define PPC_SPP_DTR	0	/* SPP data register */
#define PPC_SPP_STR	1	/* SPP status register */
#define PPC_SPP_CTR	2	/* SPP control register */
#define PPC_EPP_DATA	4	/* EPP data register (8, 16 or 32 bit) */
#define PPC_ECP_FIFO	0x400	/* ECP fifo register */
#define PPC_ECP_ECR	0x402	/* ECP extended control register */

#define r_dtr(ppc) inb((ppc)->ppc_base + PPC_SPP_DTR)
#define r_str(ppc) inb((ppc)->ppc_base + PPC_SPP_STR)
#define r_ctr(ppc) inb((ppc)->ppc_base + PPC_SPP_CTR)
#define r_epp(ppc) inb((ppc)->ppc_base + PPC_EPP_DATA)
#define r_ecr(ppc) inb((ppc)->ppc_base + PPC_ECP_ECR)
#define r_fifo(ppc) inb((ppc)->ppc_base + PPC_ECP_FIFO)

#define w_dtr(ppc,byte) outb((ppc)->ppc_base + PPC_SPP_DTR, byte)
#define w_str(ppc,byte) outb((ppc)->ppc_base + PPC_SPP_STR, byte)
#define w_ctr(ppc,byte) outb((ppc)->ppc_base + PPC_SPP_CTR, byte)
#define w_epp(ppc,byte) outb((ppc)->ppc_base + PPC_EPP_DATA, byte)
#define w_ecr(ppc,byte) outb((ppc)->ppc_base + PPC_ECP_ECR, byte)
#define w_fifo(ppc,byte) outb((ppc)->ppc_base + PPC_ECP_FIFO, byte)

/*
 * Register defines for the PC873xx parts
 */

#define PC873_FER	0x00
#define PC873_PPENABLE	(1<<0)
#define PC873_FAR	0x01
#define PC873_PTR	0x02
#define PC873_CFGLOCK	(1<<6)
#define PC873_EPPRDIR	(1<<7)
#define PC873_FCR	0x03
#define PC873_ZWS	(1<<5)
#define PC873_ZWSPWDN	(1<<6)
#define PC873_PCR	0x04
#define PC873_EPPEN	(1<<0)
#define PC873_EPP19	(1<<1)
#define PC873_ECPEN	(1<<2)
#define PC873_ECPCLK	(1<<3)
#define PC873_PMC	0x06
#define PC873_TUP	0x07
#define PC873_SID	0x08

/*
 * Register defines for the SMC FDC37C66xGT parts.
 */

/* Init codes */
#define SMC665_iCODE	0x55
#define SMC666_iCODE	0x44

/* Base configuration ports */
#define SMC66x_CSR	0x3F0
#define SMC666_CSR	0x370		/* hard-configured value for 666 */

/* Bits */
#define SMC_CR1_ADDR	0x3		/* bit 0 and 1 */
#define SMC_CR1_MODE	0x8		/* bit 3 */
#define SMC_CR4_EMODE	0x3		/* bits 0 and 1 */
#define SMC_CR4_EPPTYPE	0x40		/* bit 6 */

/* Extended modes */
#define SMC_SPP		0x0		/* SPP */
#define SMC_EPPSPP	0x1		/* EPP and SPP */
#define SMC_ECP		0x2 		/* ECP */
#define SMC_ECPEPP	0x3		/* ECP and EPP */

#endif