238 lines
8.4 KiB
C
238 lines
8.4 KiB
C
/*-
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* Copyright (c) 2005 Poul-Henning Kamp <phk@FreeBSD.org>
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* Copyright (c) 2010 Joerg Wunsch <joerg@FreeBSD.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*
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* Locating an actual µPD7210 data book has proven quite impossible for me.
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* There are a fair number of newer chips which are supersets of the µPD7210
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* but they are particular eager to comprehensively mark what the extensions
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* are and what is in the base set. Some even give the registers and their
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* bits new names.
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*
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* The following information is based on a description of the µPD7210 found
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* in an old manual for a VME board which used the chip.
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*/
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#ifndef _DEV_IEEE488_UPD7210_H_
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#define _DEV_IEEE488_UPD7210_H_
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#ifdef _KERNEL
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struct upd7210;
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struct ibfoo;
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/* upd7210 interface definitions for HW drivers */
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typedef int upd7210_irq_t(struct upd7210 *, int);
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struct upd7210 {
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struct resource *reg_res[8];
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struct resource *irq_clear_res;
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u_int reg_offset[8];
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int dmachan;
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int unit;
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int use_fifo;
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/* private stuff */
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struct mtx mutex;
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uint8_t rreg[8];
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uint8_t wreg[8 + 8];
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upd7210_irq_t *irq;
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int busy;
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u_char *buf;
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size_t bufsize;
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u_int buf_wp;
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u_int buf_rp;
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struct cdev *cdev;
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struct ibfoo *ibfoo;
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};
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#ifdef UPD7210_HW_DRIVER
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void upd7210intr(void *);
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void upd7210attach(struct upd7210 *);
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void upd7210detach(struct upd7210 *);
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#endif
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#ifdef UPD7210_SW_DRIVER
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/* upd7210 hardware definitions. */
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/* Write registers */
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enum upd7210_wreg {
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CDOR = 0, /* Command/Data Out Register */
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IMR1 = 1, /* Interrupt Mask Register 1 */
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IMR2 = 2, /* Interrupt Mask Register 2 */
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SPMR = 3, /* Serial Poll Mode Register */
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ADMR = 4, /* ADdress Mode Register */
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AUXMR = 5, /* AUXilliary Mode Register */
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ICR = 5, /* Internal Counter Register */
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PPR = 5, /* Parallel Poll Register */
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AUXRA = 5, /* AUXilliary Register A */
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AUXRB = 5, /* AUXilliary Register B */
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AUXRE = 5, /* AUXilliary Register E */
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ADR = 6, /* ADdress Register */
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EOSR = 7, /* End-Of-String Register */
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};
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/* Read registers */
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enum upd7210_rreg {
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DIR = 0, /* Data In Register */
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ISR1 = 1, /* Interrupt Status Register 1 */
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ISR2 = 2, /* Interrupt Status Register 2 */
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SPSR = 3, /* Serial Poll Status Register */
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ADSR = 4, /* ADdress Status Register */
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CPTR = 5, /* Command Pass Though Register */
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ADR0 = 6, /* ADdress Register 0 */
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ADR1 = 7, /* ADdress Register 1 */
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};
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/* Bits for ISR1 and IMR1 */
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#define IXR1_DI (1 << 0) /* Data In */
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#define IXR1_DO (1 << 1) /* Data Out */
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#define IXR1_ERR (1 << 2) /* Error */
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#define IXR1_DEC (1 << 3) /* Device Clear */
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#define IXR1_ENDRX (1 << 4) /* End Received */
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#define IXR1_DET (1 << 5) /* Device Execute Trigger */
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#define IXR1_APT (1 << 6) /* Address Pass-Through */
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#define IXR1_CPT (1 << 7) /* Command Pass-Through */
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/* Bits for ISR2 and IMR2 */
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#define IXR2_ADSC (1 << 0) /* Addressed Status Change */
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#define IXR2_REMC (1 << 1) /* Remote Change */
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#define IXR2_LOKC (1 << 2) /* Lockout Change */
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#define IXR2_CO (1 << 3) /* Command Out */
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#define ISR2_REM (1 << 4) /* Remove */
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#define IMR2_DMAI (1 << 4) /* DMA In Enable */
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#define ISR2_LOK (1 << 5) /* Lockout */
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#define IMR2_DMAO (1 << 5) /* DMA Out Enable */
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#define IXR2_SRQI (1 << 6) /* Service Request Input */
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#define ISR2_INT (1 << 7) /* Interrupt */
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#define SPSR_PEND (1 << 6) /* Pending */
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#define SPMR_RSV (1 << 6) /* Request SerVice */
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#define ADSR_MJMN (1 << 0) /* MaJor MiNor */
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#define ADSR_TA (1 << 1) /* Talker Active */
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#define ADSR_LA (1 << 2) /* Listener Active */
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#define ADSR_TPAS (1 << 3) /* Talker Primary Addr. State */
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#define ADSR_LPAS (1 << 4) /* Listener Primary Addr. State */
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#define ADSR_SPMS (1 << 5) /* Serial Poll Mode State */
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#define ADSR_ATN (1 << 6) /* Attention */
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#define ADSR_CIC (1 << 7) /* Controller In Charge */
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#define ADMR_ADM0 (1 << 0) /* Address Mode 0 */
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#define ADMR_ADM1 (1 << 1) /* Address Mode 1 */
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#define ADMR_TRM0 (1 << 4) /* Transmit/Receive Mode 0 */
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#define ADMR_TRM1 (1 << 5) /* Transmit/Receive Mode 1 */
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#define ADMR_LON (1 << 6) /* Listen Only */
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#define ADMR_TON (1 << 7) /* Talk Only */
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/* Constant part of overloaded write registers */
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#define C_ICR 0x20
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#define C_PPR 0x60
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#define C_AUXA 0x80
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#define C_AUXB 0xa0
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#define C_AUXE 0xc0
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#define AUXMR_PON 0x00 /* Immediate Execute pon */
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#define AUXMR_CPP 0x01 /* Clear Parallel Poll */
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#define AUXMR_CRST 0x02 /* Chip Reset */
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#define AUXMR_RFD 0x03 /* Finish Handshake */
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#define AUXMR_TRIG 0x04 /* Trigger */
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#define AUXMR_RTL 0x05 /* Return to local */
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#define AUXMR_SEOI 0x06 /* Send EOI */
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#define AUXMR_NVSA 0x07 /* Non-Valid Secondary cmd/addr */
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/* 0x08 undefined/unknown */
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#define AUXMR_SPP 0x09 /* Set Parallel Poll */
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/* 0x0a undefined/unknown */
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/* 0x0b undefined/unknown */
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/* 0x0c undefined/unknown */
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/* 0x0d undefined/unknown */
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/* 0x0e undefined/unknown */
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#define AUXMR_VSA 0x0f /* Valid Secondary cmd/addr */
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#define AUXMR_GTS 0x10 /* Go to Standby */
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#define AUXMR_TCA 0x11 /* Take Control Async (pulsed) */
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#define AUXMR_TCS 0x12 /* Take Control Synchronously */
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#define AUXMR_LISTEN 0x13 /* Listen */
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#define AUXMR_DSC 0x14 /* Disable System Control */
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/* 0x15 undefined/unknown */
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#define AUXMR_SIFC 0x16 /* Set IFC */
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#define AUXMR_CREN 0x17 /* Clear REN */
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/* 0x18 undefined/unknown */
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/* 0x19 undefined/unknown */
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#define AUXMR_TCSE 0x1a /* Take Control Sync on End */
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#define AUXMR_LCM 0x1b /* Listen Continuously Mode */
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#define AUXMR_LUNL 0x1c /* Local Unlisten */
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#define AUXMR_EPP 0x1d /* Execute Parallel Poll */
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#define AUXMR_CIFC 0x1e /* Clear IFC */
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#define AUXMR_SREN 0x1f /* Set REN */
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#define PPR_U (1 << 4) /* Unconfigure */
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#define PPR_S (1 << 3) /* Status Polarity */
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#define AUXA_HLDA (1 << 0) /* Holdoff on All */
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#define AUXA_HLDE (1 << 1) /* Holdoff on END */
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#define AUXA_REOS (1 << 2) /* End on EOS received */
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#define AUXA_XEOS (1 << 3) /* Transmit END with EOS */
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#define AUXA_BIN (1 << 4) /* Binary */
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#define AUXB_CPTE (1 << 0) /* Cmd Pass Through Enable */
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#define AUXB_SPEOI (1 << 1) /* Send Serial Poll EOI */
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#define AUXB_TRI (1 << 2) /* Three-State Timing */
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#define AUXB_INV (1 << 3) /* Invert */
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#define AUXB_ISS (1 << 4) /* Individual Status Select */
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#define AUXE_DHDT (1 << 0) /* DAC Holdoff on DTAS */
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#define AUXE_DHDC (1 << 1) /* DAC Holdoff on DCAS */
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#define ADR0_DL0 (1 << 5) /* Disable Listener 0 */
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#define ADR0_DT0 (1 << 6) /* Disable Talker 0 */
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#define ADR_DL (1 << 5) /* Disable Listener */
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#define ADR_DT (1 << 6) /* Disable Talker */
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#define ADR_ARS (1 << 7) /* Address Register Select */
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#define ADR1_DL1 (1 << 5) /* Disable Listener 1 */
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#define ADR1_DT1 (1 << 6) /* Disable Talker 1 */
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#define ADR1_EOI (1 << 7) /* End or Identify */
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/* Stuff from software drivers */
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extern struct cdevsw gpib_ib_cdevsw;
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/* Stuff from upd7210.c */
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void upd7210_print_isr(u_int isr1, u_int isr2);
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u_int upd7210_rd(struct upd7210 *u, enum upd7210_rreg reg);
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void upd7210_wr(struct upd7210 *u, enum upd7210_wreg reg, u_int val);
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int upd7210_take_ctrl_async(struct upd7210 *u);
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int upd7210_goto_standby(struct upd7210 *u);
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#endif /* UPD7210_SW_DRIVER */
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#endif /* _KERNEL */
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#endif /* _DEV_IEEE488_UPD7210_H_ */
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