/*      $NetBSD: pcctworeg.h,v 1.3 2008/04/28 20:23:54 martin Exp $     */

/*-
* Copyright (c) 1999, 2002 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Steve C. Woodford
*
* 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
*/

/*
* Register definitions for the PCCchip2 device, and offset to the
* various subordinate devices which hang off it.
*/
#ifndef _MVME_PCCTWOREG_H
#define _MVME_PCCTWOREG_H

/*
* Offsets to the various devices which hang off the PCCChip2.
* Note that these are offsets from the base of the PCCChip2's
* own registers.
*/
#define PCCTWO_REG_OFF      0x00000     /* Offset of PCCChip2's own registers */
#define PCCTWO_LPT_OFF      0x00000     /* Offset of parallel port registers */
#define PCCTWO_SCC_OFF      0x03000     /* Offset of CD2401 Serial Comms chip */
#define PCCTWO_IE_OFF       0x04000     /* Offset of 82596 LAN controller */
#define PCCTWO_NCRSC_OFF    0x05000     /* Offset of NCR53C710 SCSI chip */

/*
* The two devices on mvme1[67]2's MCchip
*/
#define MCCHIP_ZS0_OFF      0x03000
#define MCCHIP_ZS1_OFF      0x03800

/*
* This is needed to figure out the boot device.
* (The physical address of the boot device's registers are passed in
* from the Boot ROM)
*/
#define PCCTWO_PADDR(off)       ((void *)(0xfff42000u + (off)))


/*
* The layout of the PCCchip2's Registers.
* Each one is 8-bits wide, unless otherwise indicated.
*/
#define PCC2REG_CHIP_ID         0x00    /* Chip ID */
#define PCC2REG_CHIP_REVISION   0x01    /* Chip Revision */
#define PCC2REG_GENERAL_CONTROL 0x02    /* General Control */
#define PCC2REG_VECTOR_BASE     0x03    /* Vector Base */
#define PCC2REG_TIMER1_COMPARE  0x04    /* Tick Timer 1 Compare (32-bit) */
#define PCC2REG_TIMER1_COUNTER  0x08    /* Tick Timer 1 Counter (32-bit) */
#define PCC2REG_TIMER2_COMPARE  0x0c    /* Tick Timer 2 Compare (32-bit) */
#define PCC2REG_TIMER2_COUNTER  0x10    /* Tick Timer 2 Counter (32-bit) */
#define PCC2REG_PRESCALE_COUNT  0x14    /* Prescaler Count */
#define PCC2REG_PRESCALE_ADJUST 0x15    /* Prescaler Clock Adjust */
#define PCC2REG_TIMER2_CONTROL  0x16    /* Tick Timer 2 Control */
#define PCC2REG_TIMER1_CONTROL  0x17    /* Tick Timer 1 Control */
#define PCC2REG_GPIO_ICSR       0x18    /* GP Input Interrupt Control */
#define PCC2REG_GPIO_CONTROL    0x19    /* GP Input/Output Control */
#define PCC2REG_TIMER2_ICSR     0x1a    /* Tick Timer 2 Interrupt Control */
#define PCC2REG_TIMER1_ICSR     0x1b    /* Tick Timer 1 Interrupt Control */
#define PCC2REG_SCC_ERR_STATUS  0x1c    /* SCC Error Status */
#define PCC2REG_SCC_MODEM_ICSR  0x1d    /* SCC Modem Interrupt Control */
#define PCC2REG_SCC_TX_ICSR     0x1e    /* SCC Transmit Interrupt Control */
#define PCC2REG_SCC_RX_ICSR     0x1f    /* SCC Receive Interrupt Control */
#define PCC2REG_SCC_MODEM_PIACK 0x23    /* SCC Modem PIACK */
#define PCC2REG_SCC_TX_PIACK    0x25    /* SCC Transmit PIACK */
#define PCC2REG_SCC_RX_PIACK    0x27    /* SCC Receive PIACK */
#define PCC2REG_ETH_ERR_STATUS  0x28    /* LANC Error Status */
#define PCC2REG_ETH_ICSR        0x2a    /* LANC Interrupt Control */
#define PCC2REG_ETH_BERR_STATUS 0x2b    /* LANC Bus Error Interrupt Ctrl */
#define PCC2REG_SCSI_ERR_STATUS 0x2c    /* SCSI Error Status */
#define PCC2REG_SCSI_ICSR       0x2f    /* SCSI Interrupt Control */
#define PCC2REG_PRT_ACK_ICSR    0x30    /* Printer ACK Interrupt Control */
#define PCC2REG_PRT_FAULT_ICSR  0x31    /* Printer FAULT Interrupt Ctrl */
#define PCC2REG_PRT_SEL_ICSR    0x32    /* Printer SEL Interrupt Control */
#define PCC2REG_PRT_PE_ICSR     0x33    /* Printer PE Interrupt Control */
#define PCC2REG_PRT_BUSY_ICSR   0x34    /* Printer BUSY Interrupt Control */
#define PCC2REG_PRT_INPUT_STATUS 0x36   /* Printer Input Status */
#define PCC2REG_PRT_CONTROL     0x37    /* Printer Port Control */
#define PCC2REG_CHIP_SPEED      0x38    /* Chip Speed (16-bit) */
#define PCC2REG_PRT_DATA        0x3a    /* Printer Data (16-bit) */
#define PCC2REG_IRQ_LEVEL       0x3e    /* Interrupt Priority Level */
#define PCC2REG_IRQ_MASK        0x3f    /* Interrupt Mask */

/*
* Additions to the registers for the MCChip. Some of these overlap with
* the PCCchip2's registers, but only where hardware is not present, eg.
* the printer registers.
*/
#define MCCHIPREG_TIMER4_ICSR   0x18    /* Tick timer 4 interrupt control */
#define MCCHIPREG_TIMER3_ICSR   0x19    /* Tick timer 4 interrupt control */
#define MCCHIPREG_PARERR_ICSR   0x1c    /* Parity error interrupt control */
#define MCCHIPREG_SCC_ICSR      0x1d    /* ZS-85230 interrupt control */
#define MCCHIPREG_TIMER4_CTRL   0x1e    /* Tick timer 4 control */
#define MCCHIPREG_TIMER3_CTRL   0x1f    /* Tick timer 3 control */
#define MCCHIPREG_DRAM_BAR      0x20    /* DRAM Base Address (16-bits) */
#define MCCHIPREG_SRAM_BAR      0x22    /* SRAM Base Address (16-bits) */
#define MCCHIPREG_DRAM_SIZE     0x24    /* DRAM Size */
#define MCCHIPREG_RAM_OPTIONS   0x25    /* DRAM/SRAM Options */
#define MCCHIPREG_SRAM_SIZE     0x26    /* SRAM Size */
#define MCCHIPREG_GP_INPUTS     0x2d    /* General Purpose Inputs */
#define MCCHIPREG_162_VERSION   0x2e    /* MVME162-LX Series Version */
#define MCCHIPREG_TIMER3_COMP   0x30    /* Tick Timer 3 Compare (32-bit) */
#define MCCHIPREG_TIMER3_CNTR   0x34    /* Tick Timer 3 Counter (32-bit) */
#define MCCHIPREG_TIMER4_COMP   0x38    /* Tick Timer 4 Compare (32-bit) */
#define MCCHIPREG_TIMER4_CNTR   0x3c    /* Tick Timer 4 Counter (32-bit) */
#define MCCHIPREG_BUS_CLOCK     0x40    /* Bus Clock */
#define MCCHIPREG_EPROM_TIMING  0x41    /* EPROM Access Time Control */
#define MCCHIPREG_FLASH_TIMING  0x42    /* FLASH Access Time Control */
#define MCCHIPREG_ABORT_ICSR    0x43    /* ABORT Switch Interrupt Control */
#define MCCHIPREG_RESET_CONTROL 0x44    /* Reset Switch Control */
#define MCCHIPREG_WDOG_CONTROL  0x45    /* Watchdog Timer Control */
#define MCCHIPREG_TIMEBASE_SEL  0x46    /* Access & Watchdog Timebase Select */
#define MCCHIPREG_DRAM_CONTROL  0x48    /* Parity DRAM Control */
#define MCCHIPREG_MPU_STATUS    0x4a    /* MPU Status */
#define MCCHIPREG_PRESCALER     0x4c    /* Prescaler Count Register (32-bits) */

/*
* PCCchip2's register size is 0x40. MCchip's is 0x50. Plump for the latter.
*/
#define PCC2REG_SIZE            0x50

/*
* Convenience macroes for accessing the PCCChip2's registers
* through bus_space.
*/
#define pcc2_reg_read(sc,r)     \
               bus_space_read_1((sc)->sc_bust, (sc)->sc_bush, (r))
#define pcc2_reg_read16(sc,r)   \
               bus_space_read_2((sc)->sc_bust, (sc)->sc_bush, (r))
#define pcc2_reg_read32(sc,r)   \
               bus_space_read_4((sc)->sc_bust, (sc)->sc_bush, (r))
#define pcc2_reg_write(sc,r,v)  \
               bus_space_write_1((sc)->sc_bust, (sc)->sc_bush, (r), (v))
#define pcc2_reg_write16(sc,r,v)        \
               bus_space_write_2((sc)->sc_bust, (sc)->sc_bush, (r), (v))
#define pcc2_reg_write32(sc,r,v)        \
               bus_space_write_4((sc)->sc_bust, (sc)->sc_bush, (r), (v))

/*
* We use the interrupt vector bases suggested in the Motorola Docs...
* The first is written to the PCCChip2 for interrupt sources under
* its control. The second is written to the CD2401's Local Interrupt
* Vector Register. Thus, we don't use the Auto-Vector facilities
* for the CD2401, as recommended in the PCCChip2 Programmer's Guide.
* The third is used as a base for the ZS85230 serial chips on mvme162.
*/
#define PCCTWO_VECBASE          0x50
#define PCCTWO_SCC_VECBASE      0x5c
#define MCCHIP_ZS_VECBASE       0x5c

/*
* PCCchip2 Vector Encoding (Offsets from PCCTWO_VECBASE)
* The order 0x0 -> 0xf also indicates priority, with 0x0 lowest.
*/
#define PCCTWOV_PRT_BUSY        0x0     /* Printer Port 'BSY' */
#define PCCTWOV_PRT_PE          0x1     /* Printer Port 'PE' (Paper Empty) */
#define PCCTWOV_PRT_SELECT      0x2     /* Printer Port 'SELECT' */
#define PCCTWOV_PRT_FAULT       0x3     /* Printer Port 'FAULT' */
#define PCCTWOV_PRT_ACK         0x4     /* Printer Port 'ACK' */
#define PCCTWOV_SCSI            0x5     /* SCSI Interrupt */
#define PCCTWOV_LANC_ERR        0x6     /* LAN Controller Error */
#define PCCTWOV_LANC_IRQ        0x7     /* LAN Controller Interrupt */
#define PCCTWOV_TIMER2          0x8     /* Tick Timer 2 Interrupt */
#define PCCTWOV_TIMER1          0x9     /* Tick Timer 1 Interrupt */
#define PCCTWOV_GPIO            0xa     /* General Purpose Input Interrupt */
#define PCCTWOV_SCC_RX_EXCEP    0xc     /* SCC Receive Exception */
#define PCCTWOV_SCC_MODEM       0xd     /* SCC Modem (Non-Auto-vector mode) */
#define PCCTWOV_SCC_TX          0xe     /* SCC Tx (Non-Auto-vector mode) */
#define PCCTWOV_SCC_RX          0xf     /* SCC Rx (Non-Auto-vector mode) */
#define PCCTWOV_MAX             16

/*
* MCchip-specific Vector Encoding (Offsets from PCCTWO_VECBASE)
*/
#define MCCHIPV_TIMER4          0x3     /* Tick Timer 4 Interrupt */
#define MCCHIPV_TIMER3          0x4     /* Tick Timer 3 Interrupt */
#define MCCHIPV_PARITY_ERR      0xb     /* Parity DRAM Error Exception */
#define MCCHIPV_ZS0             0xc     /* First ZS85230 Interrupt Vector */
#define MCCHIPV_ZS1             0xc     /* Second ZS85230 Interrupt Vector */
#define MCCHIPV_ABORT           0xe     /* Abort Switch */

/*
* How to identify the PCCchip2 from an MCchip
*/
#define PCCTWO_CHIP_ID_PCC2     0x20
#define PCCTWO_CHIP_ID_MCCHIP   0x84


/*
* Bit Values for the General Control Register (PCC2REG_GENERAL_CONTROL)
*/
#define PCCTWO_GEN_CTRL_FAST    (1u<<0) /* BBRAM Speed Control */
#define PCCTWO_GEN_CTRL_MIEN    (1u<<1) /* Master Interrupt Enable */
#define PCCTWO_GEN_CTRL_C040    (1u<<2) /* Set when CPU is mc68k family */
#define PCCTWO_GEN_CTRL_DR0     (1u<<3) /* Download ROM at 0 (mvme166 only) */


/*
* Calculate the Prescaler Adjust value for a given
* value of BCLK in MHz. (PCC2REG_PRESCALE_ADJUST)
*/
#define PCCTWO_PRES_ADJ(mhz)    (256 - (mhz))


/*
* Calculate the Tick Timer Compare register value for
* a given number of micro-seconds. With the PCCChip2,
* this is simple since the Tick Counters already have
* a 1uS period. (PCC2REG_TIMER[12]_COMPARE)
*/
#define PCCTWO_TIMERFREQ        1000000
#define PCCTWO_US2LIM(us)       (us)
#define PCCTWO_LIM2US(lim)      (lim)

/*
* The Tick Timer Control Registers (PCC2REG_TIMER[12]_CONTROL)
*/
#define PCCTWO_TT_CTRL_CEN      (1u<<0) /* Counter Enable */
#define PCCTWO_TT_CTRL_COC      (1u<<1) /* Clear On Compare */
#define PCCTWO_TT_CTRL_COVF     (1u<<2) /* Clear Overflow Counter */
#define PCCTWO_TT_CTRL_OVF(r)   ((r)>>4)/* Value of the Overflow Counter */


/*
* All the Interrupt Control Registers (PCC2REG_*_ICSR) on the PCCChip2
* mostly share the same basic layout. These are defined as follows:
*/
#define PCCTWO_ICR_LEVEL_MASK   0x7     /* Mask for the interrupt level */
#define PCCTWO_ICR_ICLR         (1u<<3) /* Clear Int. (edge-sensitive mode) */
#define PCCTWO_ICR_AVEC         (1u<<3) /* Enable Auto-Vector Mode */
#define PCCTWO_ICR_IEN          (1u<<4) /* Interrupt Enable */
#define PCCTWO_ICR_INT          (1u<<5) /* Interrupt Active */
#define PCCTWO_ICR_LEVEL        (0u<<6) /* Level Triggered */
#define PCCTWO_ICR_EDGE         (1u<<6) /* Edge Triggered */
#define PCCTWO_ICR_RISE_HIGH    (0u<<7) /* Polarity: Rising Edge or Hi Level */
#define PCCTWO_ICR_FALL_LOW     (1u<<7) /* Polarity: Falling Edge or Lo Level */
#define PCCTWO_ICR_SC_RD(r)     ((r)>>6)/* Get Snoop Control Bits */
#define PCCTWO_ICR_SC_WR(r)     ((r)<<6)/* Write Snoop Control Bits */



/*
* Most of the Error Status Registers (PCC2REG_*_ERR_STATUS) mostly
* follow the same layout. These error registers are used when a
* device (eg. SCC, LANC) is mastering the PCCChip2's local bus (for
* example, performing a DMA) and some error occurs. The bits are
* defined as follows:
*/
#define PCCTWO_ERR_SR_SCLR      (1u<<0) /* Clear Error Status */
#define PCCTWO_ERR_SR_LTO       (1u<<1) /* Local Bus Timeout */
#define PCCTWO_ERR_SR_EXT       (1u<<2) /* External (VMEbus) Error */
#define PCCTWO_ERR_SR_PRTY      (1u<<3) /* DRAM Parity Error */
#define PCCTWO_ERR_SR_RTRY      (1u<<4) /* Retry Required */
#define PCCTWO_ERR_SR_MASK      0x0Eu


/*
* General Purpose Input/Output Pin Control Register
* (PCC2REG_GPIO_CONTROL)
*/
#define PCCTWO_GPIO_CTRL_GPO    (1u<<0) /* Controls the GP Output Pin */
#define PCCTWO_GPIO_CTRL_GPOE   (1u<<1) /* General Purpose Output Enable */
#define PCCTWO_GPIO_CTRL_GPI    (1u<<3) /* The current state of the GP Input */


/*
* Printer Input Status Register (PCC2REG_PRT_INPUT_STATUS)
*/
#define PCCTWO_PRT_IN_SR_BSY    (1u<<0) /* State of printer's BSY Input */
#define PCCTWO_PRT_IN_SR_PE     (1u<<1) /* State of printer's PE Input */
#define PCCTWO_PRT_IN_SR_SEL    (1u<<2) /* State of printer's SELECT Input */
#define PCCTWO_PRT_IN_SR_FLT    (1u<<3) /* State of printer's FAULT Input */
#define PCCTWO_PRT_IN_SR_ACK    (1u<<4) /* State of printer's ACK Input */
#define PCCTWO_PRT_IN_SR_PINT   (1u<<7) /* Printer Interrupt Status */


/*
* Printer Port Control Register (PCC2REG_PRT_CONTROL)
*/
#define PCCTWO_PRT_CTRL_MAN     (1u<<0) /* Manual Strobe Control */
#define PCCTWO_PRT_CTRL_FAST    (1u<<1) /* Fast Auto Strobe */
#define PCCTWO_PRT_CTRL_STB     (1u<<2) /* Strobe Pin, in manual control mode */
#define PCCTWO_PRT_CTRL_INP     (1u<<3) /* Printer Input Prime */
#define PCCTWO_PRT_CTRL_DOEN    (1u<<4) /* Printer Data Output Enable */

#endif  /* _MVME_PCCTWOREG_H */

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