root/sys/dev/pci/piixpmreg.h
/* $NetBSD: piixpmreg.h,v 1.13 2023/01/10 00:05:53 msaitoh Exp $ */
/*      $OpenBSD: piixreg.h,v 1.3 2006/01/03 22:39:03 grange Exp $      */

/*-
 * Copyright (c) 2016 Andriy Gapon <avg@FreeBSD.org>
 * 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.
 *
 * $FreeBSD: head/sys/dev/amdsbwd/amd_chipset.h 333269 2018-05-05 05:22:11Z avg $
 */

/*
 * Copyright (c) 2005 Alexander Yurchenko <grange@openbsd.org>
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#ifndef _DEV_PCI_PIIXREG_H_
#define _DEV_PCI_PIIXREG_H_

/*
 * Intel PCI-to-ISA / IDE Xcelerator (PIIX) register definitions.
 */

/*
 * Power management registers.
 */

/* PCI configuration registers */
#define PIIX_PM_BASE    0x40            /* Power management base address */
#define PIIX_PM_BASE_CSB5_RESET 0x10            /* CSB5 PM reset */
#define PIIX_DEVACTA    0x54            /* Device activity A (function 3) */
#define PIIX_DEVACTB    0x58            /* Device activity B (function 3) */
#define PIIX_PMREGMISC  0x80            /* Misc. Power management */
#define PIIX_SMB_BASE   0x90            /* SMBus base address */
#define PIIX_SMB_HOSTC  0xd0            /* SMBus host configuration */
#define PIIX_SMB_HOSTC_HSTEN    (1 << 16)       /* enable host controller */
#define PIIX_SMB_HOSTC_SMI      (0 << 17)       /* SMI */
#define PIIX_SMB_HOSTC_IRQ      (4 << 17)       /* IRQ 9 */
#define PIIX_SMB_HOSTC_INTMASK  (7 << 17)

/* SMBus I/O registers */
#define PIIX_SMB_HS     0x00            /* host status */
#define PIIX_SMB_HS_BUSY        (1 << 0)        /* running a command */
#define PIIX_SMB_HS_INTR        (1 << 1)        /* command completed */
#define PIIX_SMB_HS_DEVERR      (1 << 2)        /* command error */
#define PIIX_SMB_HS_BUSERR      (1 << 3)        /* transaction collision */
#define PIIX_SMB_HS_FAILED      (1 << 4)        /* failed bus transaction */
#define PIIX_SMB_HS_BITS        "\020\001BUSY\002INTR\003DEVERR\004BUSERR\005FAILED"
#define PIIX_SMB_HC     0x02            /* host control */
#define PIIX_SMB_HC_INTREN      (1 << 0)        /* enable interrupts */
#define PIIX_SMB_HC_KILL        (1 << 1)        /* kill current transaction */
#define PIIX_SMB_HC_CMD_QUICK   (0 << 2)        /* QUICK command */
#define PIIX_SMB_HC_CMD_BYTE    (1 << 2)        /* BYTE command */
#define PIIX_SMB_HC_CMD_BDATA   (2 << 2)        /* BYTE DATA command */
#define PIIX_SMB_HC_CMD_WDATA   (3 << 2)        /* WORD DATA command */
#define PIIX_SMB_HC_CMD_BLOCK   (5 << 2)        /* BLOCK command */
#define PIIX_SMB_HC_START       (1 << 6)        /* start transaction */
#define PIIX_SMB_HCMD   0x03            /* host command */
#define PIIX_SMB_TXSLVA 0x04            /* transmit slave address */
#define PIIX_SMB_TXSLVA_READ    (1 << 0)        /* read direction */
#define PIIX_SMB_TXSLVA_ADDR(x) (((x) & 0x7f) << 1) /* 7-bit address */
#define PIIX_SMB_HD0    0x05            /* host data 0 */
#define PIIX_SMB_HD1    0x06            /* host data 1 */
#define PIIX_SMB_HBDB   0x07            /* host block data byte */
#define PIIX_SMB_SC     0x08            /* slave control */
#define PIIX_SMB_SC_ALERTEN     (1 << 3)        /* enable SMBALERT# */
#define PIIX_SMB_SC_HOSTSEM     (1 << 4)        /* (W1S) HostSemaphore */
#define PIIX_SMB_SC_CLRHOSTSEM  (1 << 5)        /* (W1C) ClrHostSemaphore */
#define PIIX_SMB_SC_ECSEM       (1 << 6)        /* (W1S) EcSemaphore */
#define PIIX_SMB_SC_CLRECSEM    (1 << 7)        /* (W1C) ClrEcSemaphore */
#define PIIX_SMB_SC_SEMMASK     0xf0            /* Semaphore bits */

/* Power management I/O registers */
#define PIIX_PM_PMTMR   0x08            /* power management timer */

/* Misc */
#define PIIX_PM_SIZE    0x38            /* Power management I/O space size */
#define PIIX_SMB_SIZE   0x10            /* SMBus I/O space size */

/*
 * AMD SB800 and compatible chipset's configuration registers.
 * See SB8xx RRG 2.3.3, etc.
 */

/* In the I/O area */
#define SB800_INDIRECTIO_BASE   0xcd6
#define SB800_INDIRECTIO_SIZE   2 
#define SB800_INDIRECTIO_INDEX  0
#define SB800_INDIRECTIO_DATA   1

/* In the MMIO area */
#define SB800_FCH_PM_BASE       0xfed80300
#define SB800_FCH_PM_SIZE       8

#define SB800_PM_SMBUS0EN_LO    0x2c
#define SB800_PM_SMBUS0EN_HI    0x2d
#define SB800_PM_SMBUS0EN_ENABLE __BIT(0)     /* Function enable */
#define SB800_PM_SMBUS0_MASK_C  __BITS(2, 1)  /* Port mask (PMIO2C) */
#define SB800_PM_SMBUS0EN_BADDR __BITS(15, 5) /* Base address */

#define SB800_PM_SMBUS0SEL      0x2e
#define SB800_PM_SMBUS0_MASK_E  __BITS(2, 1)  /* Port mask (PMIO2E) */
#define SB800_PM_SMBUS0SELEN    0x2f
#define SB800_PM_USE_SMBUS0SEL  __BIT(0) /*
                                          * If the bit is set, SMBUS0SEL is
                                          * used to select the port.
                                          */

/* In the SMBus I/O space */
#define SB800_SMB_HOSTC         0x10    /* I2C bus configuration */
#define SB800_SMB_HOSTC_IRQ     (1 << 0)        /* 0:SMI 1:IRQ */

/* Misc */
#define SB800_SMB_SIZE  0x11            /* SMBus I/O space size */

/*
 * Newer FCH registers in the PMIO space.
 * See BKDG for Family 16h Models 30h-3Fh 3.26.13 PMx00 and PMx04.
 */
#define AMDFCH41_PM_DECODE_EN0          0x00
#define         AMDFCH41_SMBUS_EN       0x10
#define         AMDFCH41_WDT_EN         0x80
#define AMDFCH41_PM_DECODE_EN1          0x01
#define AMDFCH41_PM_PORT_INDEX          0x02
#define         AMDFCH41_SMBUS_PORTMASK 0x18
#define AMDFCH41_PM_DECODE_EN3          0x03
#define         AMDFCH41_WDT_RES_MASK   0x03
#define         AMDFCH41_WDT_RES_32US   0x00
#define         AMDFCH41_WDT_RES_10MS   0x01
#define         AMDFCH41_WDT_RES_100MS  0x02
#define         AMDFCH41_WDT_RES_1S     0x03
#define         AMDFCH41_WDT_EN_MASK    0x0c
#define         AMDFCH41_WDT_ENABLE     0x00
#define AMDFCH41_PM_ISA_CTRL            0x04
#define         AMDFCH41_MMIO_EN        0x02

#endif  /* !_DEV_PCI_PIIXREG_H_ */