From 77138089c5989df44341e9a58ab212881294e327 Mon Sep 17 00:00:00 2001 From: Joel Sherrill Date: Fri, 19 Feb 1999 23:26:19 +0000 Subject: Moved to proper rtems/score --- cpukit/score/cpu/m68k/rtems/m68k/m68302.h | 661 ------------------------------ 1 file changed, 661 deletions(-) delete mode 100644 cpukit/score/cpu/m68k/rtems/m68k/m68302.h (limited to 'cpukit/score/cpu/m68k/rtems/m68k/m68302.h') diff --git a/cpukit/score/cpu/m68k/rtems/m68k/m68302.h b/cpukit/score/cpu/m68k/rtems/m68k/m68302.h deleted file mode 100644 index 084ceac034..0000000000 --- a/cpukit/score/cpu/m68k/rtems/m68k/m68302.h +++ /dev/null @@ -1,661 +0,0 @@ -/* - *------------------------------------------------------------------ - * - * m68302.h - Definitions for Motorola MC68302 processor. - * - * Section references in this file refer to revision 2 of Motorola's - * "MC68302 Integrated Multiprotocol Processor User's Manual". - * (Motorola document MC68302UM/AD REV 2.) - * - * Based on Don Meyer's cpu68302.h that was posted in comp.sys.m68k - * on 17 February, 1993. - * - * Copyright 1995 David W. Glessner. - * - * Redistribution and use in source and binary forms are permitted - * provided that the following conditions are met: - * 1. Redistribution of source code and documentation must retain - * the above copyright notice, this list of conditions and the - * following disclaimer. - * 2. The name of the author may not be used to endorse or promote - * products derived from this software without specific prior - * written permission. - * - * This software is provided "AS IS" without warranty of any kind, - * either expressed or implied, including, but not limited to, the - * implied warranties of merchantability, title and fitness for a - * particular purpose. - * - * - * $Id$ - * - *------------------------------------------------------------------ - */ - -#ifndef __MOTOROLA_MC68302_DEFINITIONS_h -#define __MOTOROLA_MC68302_DEFINITIONS_h - -/* - * BAR - Base Address Register - * Section 2.7 - */ -#define M302_BAR (*((volatile rtems_unsigned16 *) 0xf2)) - -/* - * SCR - System Control Register - * Section 3.8.1 - */ -#define M302_SCR (*((volatile rtems_unsigned32 *) 0xf4)) -/* - * SCR bits - */ -#define RBIT_SCR_IPA 0x08000000 -#define RBIT_SCR_HWT 0x04000000 -#define RBIT_SCR_WPV 0x02000000 -#define RBIT_SCR_ADC 0x01000000 - -#define RBIT_SCR_ERRE 0x00400000 -#define RBIT_SCR_VGE 0x00200000 -#define RBIT_SCR_WPVE 0x00100000 -#define RBIT_SCR_RMCST 0x00080000 -#define RBIT_SCR_EMWS 0x00040000 -#define RBIT_SCR_ADCE 0x00020000 -#define RBIT_SCR_BCLM 0x00010000 - -#define RBIT_SCR_FRZW 0x00008000 -#define RBIT_SCR_FRZ2 0x00004000 -#define RBIT_SCR_FRZ1 0x00002000 -#define RBIT_SCR_SAM 0x00001000 -#define RBIT_SCR_HWDEN 0x00000800 -#define RBIT_SCR_HWDCN2 0x00000400 -#define RBIT_SCR_HWDCN1 0x00000200 /* 512 clocks */ -#define RBIT_SCR_HWDCN0 0x00000100 /* 128 clocks */ - -#define RBIT_SCR_LPREC 0x00000080 -#define RBIT_SCR_LPP16 0x00000040 -#define RBIT_SCR_LPEN 0x00000020 -#define RBIT_SCR_LPCLKDIV 0x0000001f - - -/* - * 68000 interrupt and trap vector numbers - */ -#define M68K_IVEC_BUS_ERROR 2 -#define M68K_IVEC_ADDRESS_ERROR 3 -#define M68K_IVEC_ILLEGAL_OPCODE 4 -#define M68K_IVEC_ZERO_DIVIDE 5 -#define M68K_IVEC_CHK 6 -#define M68K_IVEC_TRAPV 7 -#define M68K_IVEC_PRIVILEGE 8 -#define M68K_IVEC_TRACE 9 -#define M68K_IVEC_LINE_A 10 -#define M68K_IVEC_LINE_F 11 -/* Unassigned, Reserved 12-14 */ -#define M68K_IVEC_UNINITIALIZED_INT 15 -/* Unassigned, Reserved 16-23 */ -#define M68K_IVEC_SPURIOUS_INT 24 - -#define M68K_IVEC_LEVEL1_AUTOVECTOR 25 -#define M68K_IVEC_LEVEL2_AUTOVECTOR 26 -#define M68K_IVEC_LEVEL3_AUTOVECTOR 27 -#define M68K_IVEC_LEVEL4_AUTOVECTOR 28 -#define M68K_IVEC_LEVEL5_AUTOVECTOR 29 -#define M68K_IVEC_LEVEL6_AUTOVECTOR 30 -#define M68K_IVEC_LEVEL7_AUTOVECTOR 31 - -#define M68K_IVEC_TRAP0 32 -#define M68K_IVEC_TRAP1 33 -#define M68K_IVEC_TRAP2 34 -#define M68K_IVEC_TRAP3 35 -#define M68K_IVEC_TRAP4 36 -#define M68K_IVEC_TRAP5 37 -#define M68K_IVEC_TRAP6 38 -#define M68K_IVEC_TRAP7 39 -#define M68K_IVEC_TRAP8 40 -#define M68K_IVEC_TRAP9 41 -#define M68K_IVEC_TRAP10 42 -#define M68K_IVEC_TRAP11 43 -#define M68K_IVEC_TRAP12 44 -#define M68K_IVEC_TRAP13 45 -#define M68K_IVEC_TRAP14 46 -#define M68K_IVEC_TRAP15 47 -/* - * Unassigned, Reserved 48-59 - * - * Note: Vectors 60-63 are used by the MC68302 (e.g. BAR, SCR). - */ - -/* - * MC68302 Interrupt Vectors - * Section 3.2 - */ -enum m68302_ivec_e { - M302_IVEC_ERR =0, - M302_IVEC_PB8 =1, /* General-Purpose Interrupt 0 */ - M302_IVEC_SMC2 =2, - M302_IVEC_SMC1 =3, - M302_IVEC_TIMER3 =4, - M302_IVEC_SCP =5, - M302_IVEC_TIMER2 =6, - M302_IVEC_PB9 =7, /* General-Purpose Interrupt 1 */ - M302_IVEC_SCC3 =8, - M302_IVEC_TIMER1 =9, - M302_IVEC_SCC2 =10, - M302_IVEC_IDMA =11, - M302_IVEC_SDMA =12, /* SDMA Channels Bus Error */ - M302_IVEC_SCC1 =13, - M302_IVEC_PB10 =14, /* General-Purpose Interrupt 2 */ - M302_IVEC_PB11 =15, /* General-Purpose Interrupt 3 */ - M302_IVEC_IRQ1 =17, /* External Device */ - M302_IVEC_IRQ6 =22, /* External Device */ - M302_IVEC_IRQ7 =23 /* External Device */ -}; - - -/* - * GIMR - Global Interrupt Mode Register - * Section 3.2.5.1 - */ -#define RBIT_GIMR_MOD (1<<15) -#define RBIT_GIMR_IV7 (1<<14) -#define RBIT_GIMR_IV6 (1<<13) -#define RBIT_GIMR_IV1 (1<<12) -#define RBIT_GIMR_ET7 (1<<10) -#define RBIT_GIMR_ET6 (1<<9) -#define RBIT_GIMR_ET1 (1<<8) -#define RBIT_GIMR_VECTOR (7<<5) - -/* - * IPR - Interrupt Pending Register (Section 3.2.5.2) - * IMR - Interrupt Mask Register (Section 3.2.5.3) - * ISR - Interrupt In-Service Register (Section 3.2.5.4) - */ -#define RBIT_IPR_PB11 (1<<15) -#define RBIT_IPR_PB10 (1<<14) -#define RBIT_IPR_SCC1 (1<<13) -#define RBIT_IPR_SDMA (1<<12) -#define RBIT_IPR_IDMA (1<<11) -#define RBIT_IPR_SCC2 (1<<10) -#define RBIT_IPR_TIMER1 (1<<9) -#define RBIT_IPR_SCC3 (1<<8) -#define RBIT_IPR_PB9 (1<<7) -#define RBIT_IPR_TIMER2 (1<<6) -#define RBIT_IPR_SCP (1<<5) -#define RBIT_IPR_TIMER3 (1<<4) -#define RBIT_IPR_SMC1 (1<<3) -#define RBIT_IPR_SMC2 (1<<2) -#define RBIT_IPR_PB8 (1<<1) -#define RBIT_IPR_ERR (1<<0) - -#define RBIT_ISR_PB11 (1<<15) -#define RBIT_ISR_PB10 (1<<14) -#define RBIT_ISR_SCC1 (1<<13) -#define RBIT_ISR_SDMA (1<<12) -#define RBIT_ISR_IDMA (1<<11) -#define RBIT_ISR_SCC2 (1<<10) -#define RBIT_ISR_TIMER1 (1<<9) -#define RBIT_ISR_SCC3 (1<<8) -#define RBIT_ISR_PB9 (1<<7) -#define RBIT_ISR_TIMER2 (1<<6) -#define RBIT_ISR_SCP (1<<5) -#define RBIT_ISR_TIMER3 (1<<4) -#define RBIT_ISR_SMC1 (1<<3) -#define RBIT_ISR_SMC2 (1<<2) -#define RBIT_ISR_PB8 (1<<1) - -#define RBIT_IMR_PB11 (1<<15) /* PB11 Interrupt Mask */ -#define RBIT_IMR_PB10 (1<<14) /* PB10 Interrupt Mask */ -#define RBIT_IMR_SCC1 (1<<13) /* SCC1 Interrupt Mask */ -#define RBIT_IMR_SDMA (1<<12) /* SDMA Interrupt Mask */ -#define RBIT_IMR_IDMA (1<<11) /* IDMA Interrupt Mask */ -#define RBIT_IMR_SCC2 (1<<10) /* SCC2 Interrupt Mask */ -#define RBIT_IMR_TIMER1 (1<<9) /* TIMER1 Interrupt Mask */ -#define RBIT_IMR_SCC3 (1<<8) /* SCC3 Interrupt Mask */ -#define RBIT_IMR_PB9 (1<<7) /* PB9 Interrupt Mask */ -#define RBIT_IMR_TIMER2 (1<<6) /* TIMER2 Interrupt Mask */ -#define RBIT_IMR_SCP (1<<5) /* SCP Interrupt Mask */ -#define RBIT_IMR_TIMER3 (1<<4) /* TIMER3 Interrupt Mask */ -#define RBIT_IMR_SMC1 (1<<3) /* SMC1 Interrupt Mask */ -#define RBIT_IMR_SMC2 (1<<2) /* SMC2 Interrupt Mask */ -#define RBIT_IMR_PB8 (1<<1) /* PB8 Interrupt Mask */ - - -/* - * DRAM Refresh - * Section 3.9 - * - * The DRAM refresh memory map replaces the SCC2 Tx BD 6 and Tx BD 7 - * structures in the parameter RAM. - * - * Access to the DRAM registers can be accomplished by - * the following approach: - * - * volatile m302_DRAM_refresh_t *dram; - * dram = (volatile m302_DRAM_refresh_t *) &m302.scc2.bd.tx[6]; - * - * Then simply use pointer references (e.g. dram->count = 3). - */ -typedef struct { - rtems_unsigned16 dram_high; /* DRAM high address and FC */ - rtems_unsigned16 dram_low; /* DRAM low address */ - rtems_unsigned16 increment; /* increment step (bytes/row) */ - rtems_unsigned16 count; /* RAM refresh cycle count (#rows) */ - rtems_unsigned16 t_ptr_h; /* temporary refresh high addr & FC */ - rtems_unsigned16 t_ptr_l; /* temporary refresh low address */ - rtems_unsigned16 t_count; /* temporary refresh cycles count */ - rtems_unsigned16 res; /* reserved */ -} m302_DRAM_refresh_t; - - -/* - * TMR - Timer Mode Register (for timers 1 and 2) - * Section 3.5.2.1 - */ -#define RBIT_TMR_ICLK_STOP (0<<1) -#define RBIT_TMR_ICLK_MASTER (1<<1) -#define RBIT_TMR_ICLK_MASTER16 (2<<1) -#define RBIT_TMR_ICLK_TIN (3<<1) - -#define RBIT_TMR_OM (1<<5) -#define RBIT_TMR_ORI (1<<4) -#define RBIT_TMR_FRR (1<<3) -#define RBIT_TMR_RST (1<<0) - - -/* - * TER - Timer Event Register (for timers 1 and 2) - * Section 3.5.2.5 - */ -#define RBIT_TER_REF (1<<1) /* Output Reference Event */ -#define RBIT_TER_CAP (1<<0) /* Capture Event */ - - -/* - * SCC Buffer Descriptors and Buffer Descriptors Table - * Section 4.5.5 - */ -typedef struct m302_SCC_bd { - rtems_unsigned16 status; /* status and control */ - rtems_unsigned16 length; /* data length */ - rtems_unsigned8 *buffer; /* data buffer pointer */ -} m302_SCC_bd_t; - -typedef struct { - m302_SCC_bd_t rx[8]; /* receive buffer descriptors */ - m302_SCC_bd_t tx[8]; /* transmit buffer descriptors */ -} m302_SCC_bd_table_t; - - -/* - * SCC Parameter RAM (offset 0x080 from an SCC Base) - * Section 4.5.6 - * - * Each SCC parameter RAM area begins at offset 0x80 from each SCC base - * area (0x400, 0x500, or 0x600 from the dual-port RAM base). - * - * Offsets 0x9c-0xbf from each SCC base area compose the protocol-specific - * portion of the SCC parameter RAM. - */ -typedef struct { - rtems_unsigned8 rfcr; /* Rx Function Code */ - rtems_unsigned8 tfcr; /* Tx Function Code */ - rtems_unsigned16 mrblr; /* Maximum Rx Buffer Length */ - rtems_unsigned16 _rstate; /* Rx Internal State */ - rtems_unsigned8 res2; - rtems_unsigned8 rbd; /* Rx Internal Buffer Number */ - rtems_unsigned32 _rdptr; /* Rx Internal Data Pointer */ - rtems_unsigned16 _rcount; /* Rx Internal Byte Count */ - rtems_unsigned16 _rtmp; /* Rx Temp */ - rtems_unsigned16 _tstate; /* Tx Internal State */ - rtems_unsigned8 res7; - rtems_unsigned8 tbd; /* Tx Internal Buffer Number */ - rtems_unsigned32 _tdptr; /* Tx Internal Data Pointer */ - rtems_unsigned16 _tcount; /* Tx Internal Byte Count */ - rtems_unsigned16 _ttmp; /* Tx Temp */ -} m302_SCC_parameters_t; - -/* - * UART-Specific SCC Parameter RAM - * Section 4.5.11.3 - */ -typedef struct { - rtems_unsigned16 max_idl; /* Maximum IDLE Characters (rx) */ - rtems_unsigned16 idlc; /* Temporary rx IDLE counter */ - rtems_unsigned16 brkcr; /* Break Count Register (tx) */ - rtems_unsigned16 parec; /* Receive Parity Error Counter */ - rtems_unsigned16 frmec; /* Receive Framing Error Counter */ - rtems_unsigned16 nosec; /* Receive Noise Counter */ - rtems_unsigned16 brkec; /* Receive Break Condition Counter */ - rtems_unsigned16 uaddr1; /* UART ADDRESS Character 1 */ - rtems_unsigned16 uaddr2; /* UART ADDRESS Character 2 */ - rtems_unsigned16 rccr; /* Receive Control Character Register */ - rtems_unsigned16 character[8]; /* Control Characters 1 through 8*/ -} m302_SCC_UartSpecific_t; -/* - * This definition allows for the checking of receive buffers - * for errors. - */ - -#define RCV_ERR 0x003F - -/* - * UART receive buffer descriptor bit definitions. - * Section 4.5.11.14 - */ -#define RBIT_UART_CTRL (1<<11) /* buffer contains a control char */ -#define RBIT_UART_ADDR (1<<10) /* first byte contains an address */ -#define RBIT_UART_MATCH (1<<9) /* indicates which addr char matched */ -#define RBIT_UART_IDLE (1<<8) /* buffer closed due to IDLE sequence */ -#define RBIT_UART_BR (1<<5) /* break sequence was received */ -#define RBIT_UART_FR (1<<4) /* framing error was received */ -#define RBIT_UART_PR (1<<3) /* parity error was received */ -#define RBIT_UART_OV (1<<1) /* receiver overrun occurred */ -#define RBIT_UART_CD (1<<0) /* carrier detect lost */ -#define RBIT_UART_STATUS 0x003B /* all status bits */ - -/* - * UART transmit buffer descriptor bit definitions. - * Section 4.5.11.15 - */ -#define RBIT_UART_CR (1<<11) /* clear-to-send report - * this results in two idle bits - * between back-to-back frames - */ -#define RBIT_UART_A (1<<10) /* buffer contains address characters - * only valid in multidrop mode (UM0=1) - */ -#define RBIT_UART_PREAMBLE (1<<9) /* send preamble before data */ -#define RBIT_UART_CTS_LOST (1<<0) /* CTS lost */ - -/* - * UART event register - * Section 4.5.11.16 - */ -#define M302_UART_EV_CTS (1<<7) /* CTS status changed */ -#define M302_UART_EV_CD (1<<6) /* carrier detect status changed */ -#define M302_UART_EV_IDL (1<<5) /* IDLE sequence status changed */ -#define M302_UART_EV_BRK (1<<4) /* break character was received */ -#define M302_UART_EV_CCR (1<<3) /* control character received */ -#define M302_UART_EV_TX (1<<1) /* buffer has been transmitted */ -#define M302_UART_EV_RX (1<<0) /* buffer has been received */ - - -/* - * HDLC-Specific SCC Parameter RAM - * Section 4.5.12.3 - * - * c_mask_l should be 0xF0B8 for 16-bit CRC, 0xdebb for 32-bit CRC - * c_mask_h is a don't care for 16-bit CRC, 0x20E2 for 32-bit CRC - */ -typedef struct { - rtems_unsigned16 rcrc_l; /* Temp Receive CRC Low */ - rtems_unsigned16 rcrc_h; /* Temp Receive CRC High */ - rtems_unsigned16 c_mask_l; /* CRC Mask Low */ - rtems_unsigned16 c_mask_h; /* CRC Mask High */ - rtems_unsigned16 tcrc_l; /* Temp Transmit CRC Low */ - rtems_unsigned16 tcrc_h; /* Temp Transmit CRC High */ - - rtems_unsigned16 disfc; /* Discard Frame Counter */ - rtems_unsigned16 crcec; /* CRC Error Counter */ - rtems_unsigned16 abtsc; /* Abort Sequence Counter */ - rtems_unsigned16 nmarc; /* Nonmatching Address Received Cntr */ - rtems_unsigned16 retrc; /* Frame Retransmission Counter */ - - rtems_unsigned16 mflr; /* Maximum Frame Length Register */ - rtems_unsigned16 max_cnt; /* Maximum_Length Counter */ - - rtems_unsigned16 hmask; /* User Defined Frame Address Mask */ - rtems_unsigned16 haddr1; /* User Defined Frame Address */ - rtems_unsigned16 haddr2; /* " */ - rtems_unsigned16 haddr3; /* " */ - rtems_unsigned16 haddr4; /* " */ -} m302_SCC_HdlcSpecific_t; -/* - * HDLC receiver buffer descriptor bit definitions - * Section 4.5.12.10 - */ -#define RBIT_HDLC_EMPTY_BIT 0x8000 /* buffer associated with BD is empty */ -#define RBIT_HDLC_LAST_BIT 0x0800 /* buffer is last in a frame */ -#define RBIT_HDLC_FIRST_BIT 0x0400 /* buffer is first in a frame */ -#define RBIT_HDLC_FRAME_LEN 0x0020 /* receiver frame length violation */ -#define RBIT_HDLC_NONOCT_Rx 0x0010 /* received non-octet aligned frame */ -#define RBIT_HDLC_ABORT_SEQ 0x0008 /* received abort sequence */ -#define RBIT_HDLC_CRC_ERROR 0x0004 /* frame contains a CRC error */ -#define RBIT_HDLC_OVERRUN 0x0002 /* receiver overrun occurred */ -#define RBIT_HDLC_CD_LOST 0x0001 /* carrier detect lost */ - -/* - * HDLC transmit buffer descriptor bit definitions - * Section 4.5.12.11 - */ -#define RBIT_HDLC_READY_BIT 0x8000 /* buffer is ready to transmit */ -#define RBIT_HDLC_EXT_BUFFER 0x4000 /* buffer is in external memory */ -#define RBIT_HDLC_WRAP_BIT 0x2000 /* last buffer in bd table, so wrap */ -#define RBIT_HDLC_WAKE_UP 0x1000 /* interrupt when buffer serviced */ -#define RBIT_HDLC_LAST_BIT 0x0800 /* buffer is last in the frame */ -#define RBIT_HDLC_TxCRC_BIT 0x0400 /* transmit a CRC sequence */ -#define RBIT_HDLC_UNDERRUN 0x0002 /* transmitter underrun */ -#define RBIT_HDLC_CTS_LOST 0x0001 /* CTS lost */ - -/* - * HDLC event register bit definitions - * Section 4.5.12.12 - */ -#define RBIT_HDLC_CTS 0x80 /* CTS status changed */ -#define RBIT_HDLC_CD 0x40 /* carrier detect status changed */ -#define RBIT_HDLC_IDL 0x20 /* IDLE sequence status changed */ -#define RBIT_HDLC_TXE 0x10 /* transmit error */ -#define RBIT_HDLC_RXF 0x08 /* received frame */ -#define RBIT_HDLC_BSY 0x04 /* frame rcvd and discarded due to - * lack of buffers - */ -#define RBIT_HDLC_TXB 0x02 /* buffer has been transmitted */ -#define RBIT_HDLC_RXB 0x01 /* received buffer */ - - - -typedef struct { - m302_SCC_bd_table_t bd; /* +000 Buffer Descriptor Table */ - m302_SCC_parameters_t parm; /* +080 Common Parameter RAM */ - union { /* +09C Protocol-Specific Parm RAM */ - m302_SCC_UartSpecific_t uart; - m302_SCC_HdlcSpecific_t hdlc; - } prot; - rtems_unsigned8 res[0x040]; /* +0C0 reserved, (not implemented) */ -} m302_SCC_t; - - -/* - * Common SCC Registers - */ -typedef struct { - rtems_unsigned16 res1; - rtems_unsigned16 scon; /* SCC Configuration Register 4.5.2 */ - rtems_unsigned16 scm; /* SCC Mode Register 4.5.3 */ - rtems_unsigned16 dsr; /* SCC Data Synchronization Register 4.5.4 */ - rtems_unsigned8 scce; /* SCC Event Register 4.5.8.1 */ - rtems_unsigned8 res2; - rtems_unsigned8 sccm; /* SCC Mask Register 4.5.8.2 */ - rtems_unsigned8 res3; - rtems_unsigned8 sccs; /* SCC Status Register 4.5.8.3 */ - rtems_unsigned8 res4; - rtems_unsigned16 res5; -} m302_SCC_Registers_t; - -/* - * SCON - SCC Configuration Register - * Section 4.5.2 - */ -#define RBIT_SCON_WOMS (1<<15) /* Wired-OR Mode Select (NMSI mode only) - * When set, the TXD driver is an - * open-drain output */ -#define RBIT_SCON_EXTC (1<<14) /* External Clock Source */ -#define RBIT_SCON_TCS (1<<13) /* Transmit Clock Source */ -#define RBIT_SCON_RCS (1<<12) /* Receive Clock Source */ - -/* - * SCM - SCC Mode Register bit definitions - * Section 4.5.3 - * The parameter-specific mode bits occupy bits 15 through 6. - */ -#define RBIT_SCM_ENR (1<<3) /* Enable receiver */ -#define RBIT_SCM_ENT (1<<2) /* Enable transmitter */ - - -/* - * Internal MC68302 Registers - * starts at offset 0x800 from dual-port RAM base - * Section 2.8 - */ -typedef struct { - /* offset +800 */ - rtems_unsigned16 res0; - rtems_unsigned16 cmr; /* IDMA Channel Mode Register */ - rtems_unsigned32 sapr; /* IDMA Source Address Pointer */ - rtems_unsigned32 dapr; /* IDMA Destination Address Pointer */ - rtems_unsigned16 bcr; /* IDMA Byte Count Register */ - rtems_unsigned8 csr; /* IDMA Channel Status Register */ - rtems_unsigned8 res1; - rtems_unsigned8 fcr; /* IDMA Function Code Register */ - rtems_unsigned8 res2; - - /* offset +812 */ - rtems_unsigned16 gimr; /* Global Interrupt Mode Register */ - rtems_unsigned16 ipr; /* Interrupt Pending Register */ - rtems_unsigned16 imr; /* Interrupt Mask Register */ - rtems_unsigned16 isr; /* Interrupt In-Service Register */ - rtems_unsigned16 res3; - rtems_unsigned16 res4; - - /* offset +81e */ - rtems_unsigned16 pacnt; /* Port A Control Register */ - rtems_unsigned16 paddr; /* Port A Data Direction Register */ - rtems_unsigned16 padat; /* Port A Data Register */ - rtems_unsigned16 pbcnt; /* Port B Control Register */ - rtems_unsigned16 pbddr; /* Port B Data Direction Register */ - rtems_unsigned16 pbdat; /* Port B Data Register */ - rtems_unsigned16 res5; - - /* offset +82c */ - rtems_unsigned16 res6; - rtems_unsigned16 res7; - - rtems_unsigned16 br0; /* Base Register (CS0) */ - rtems_unsigned16 or0; /* Option Register (CS0) */ - rtems_unsigned16 br1; /* Base Register (CS1) */ - rtems_unsigned16 or1; /* Option Register (CS1) */ - rtems_unsigned16 br2; /* Base Register (CS2) */ - rtems_unsigned16 or2; /* Option Register (CS2) */ - rtems_unsigned16 br3; /* Base Register (CS3) */ - rtems_unsigned16 or3; /* Option Register (CS3) */ - - /* offset +840 */ - rtems_unsigned16 tmr1; /* Timer Unit 1 Mode Register */ - rtems_unsigned16 trr1; /* Timer Unit 1 Reference Register */ - rtems_unsigned16 tcr1; /* Timer Unit 1 Capture Register */ - rtems_unsigned16 tcn1; /* Timer Unit 1 Counter */ - rtems_unsigned8 res8; - rtems_unsigned8 ter1; /* Timer Unit 1 Event Register */ - rtems_unsigned16 wrr; /* Watchdog Reference Register */ - rtems_unsigned16 wcn; /* Watchdog Counter */ - rtems_unsigned16 res9; - rtems_unsigned16 tmr2; /* Timer Unit 2 Mode Register */ - rtems_unsigned16 trr2; /* Timer Unit 2 Reference Register */ - rtems_unsigned16 tcr2; /* Timer Unit 2 Capture Register */ - rtems_unsigned16 tcn2; /* Timer Unit 2 Counter */ - rtems_unsigned8 resa; - rtems_unsigned8 ter2; /* Timer Unit 2 Event Register */ - rtems_unsigned16 resb; - rtems_unsigned16 resc; - rtems_unsigned16 resd; - - /* offset +860 */ - rtems_unsigned8 cr; /* Command Register */ - rtems_unsigned8 rese[0x1f]; - - /* offset +880, +890, +8a0 */ - m302_SCC_Registers_t scc[3]; /* SCC1, SCC2, SCC3 Registers */ - - /* offset +8b0 */ - rtems_unsigned16 spmode; /* SCP,SMC Mode and Clock Cntrl Reg */ - rtems_unsigned16 simask; /* Serial Interface Mask Register */ - rtems_unsigned16 simode; /* Serial Interface Mode Register */ -} m302_internalReg_t ; - - -/* - * MC68302 dual-port RAM structure. - * (Includes System RAM, Parameter RAM, and Internal Registers). - * Section 2.8 - */ -typedef struct { - rtems_unsigned8 mem[0x240]; /* +000 User Data Memory */ - rtems_unsigned8 res1[0x1c0]; /* +240 reserved, (not implemented) */ - m302_SCC_t scc1; /* +400 SCC1 */ - m302_SCC_t scc2; /* +500 SCC2 */ - m302_SCC_t scc3; /* +600 SCC3 */ - rtems_unsigned8 res2[0x100]; /* +700 reserved, (not implemented) */ - m302_internalReg_t reg; /* +800 68302 Internal Registers */ -} m302_dualPortRAM_t; - -/* some useful defines the some of the registers above */ - - -/* ---- - MC68302 Chip Select Registers - p3-46 2nd Edition - - */ -#define BR_ENABLED 1 -#define BR_DISABLED 0 -#define BR_FC_NULL 0 -#define BR_READ_ONLY 0 -#define BR_READ_WRITE 2 -#define OR_DTACK_0 0x0000 -#define OR_DTACK_1 0x2000 -#define OR_DTACK_2 0x4000 -#define OR_DTACK_3 0x6000 -#define OR_DTACK_4 0x8000 -#define OR_DTACK_5 0xA000 -#define OR_DTACK_6 0xC000 -#define OR_DTACK_EXT 0xE000 -#define OR_SIZE_64K 0x1FE0 -#define OR_SIZE_128K 0x1FC0 -#define OR_SIZE_256K 0x1F80 -#define OR_SIZE_512K 0x1F00 -#define OR_SIZE_1M 0x1E00 -#define OR_SIZE_2M 0x1C00 -#define OR_MASK_RW 0x0000 -#define OR_NO_MASK_RW 0x0002 -#define OR_MASK_FC 0x0000 -#define OR_NO_MASK_FC 0x0001 - -#define MAKE_BR(base_address, enable, rw, fc) \ - ((base_address >> 11) | fc | rw | enable) - -#define MAKE_OR(bsize, DtAck, RW_Mask, FC_Mask) \ - (DtAck | ((~(bsize - 1) & 0x00FFFFFF) >> 11) | FC_Mask | RW_Mask) - -#define __REG_CAT(r, n) r ## n -#define WRITE_BR(csel, base_address, enable, rw, fc) \ - __REG_CAT(m302.reg.br, csel) = MAKE_BR(base_address, enable, rw, fc) -#define WRITE_OR(csel, bsize, DtAck, RW_Mask, FC_Mask) \ - __REG_CAT(m302.reg.or, csel) = MAKE_OR(bsize, DtAck, RW_Mask, FC_Mask) - -/* ---- - MC68302 Watchdog Timer Enable Bit - - */ -#define WATCHDOG_ENABLE (1) -#define WATCHDOG_TRIGGER() (m302.reg.wrr = 0x10 | WATCHDOG_ENABLE, m302.reg.wcn = 0) -#define WATCHDOG_TOGGLE() (m302.reg.wcn = WATCHDOG_TIMEOUT_PERIOD) -#define DISABLE_WATCHDOG() (m302.reg.wrr = 0) - -/* - * Declare the variable that's used to reference the variables in - * the dual-port RAM. - */ -extern volatile m302_dualPortRAM_t m302; - -#endif -/* end of include file */ -- cgit v1.2.3