The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)

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FreeBSD/Linux Kernel Cross Reference
sys/dev/ppbus/ppbus_base.h

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    1 /* $NetBSD: ppbus_base.h,v 1.8 2008/04/15 15:02:29 cegger Exp $ */
    2 
    3 /*
    4  * Copyright (c) 1997, 1998, 1999 Nicolas Souchu
    5  * All rights reserved.
    6  *
    7  * Redistribution and use in source and binary forms, with or without
    8  * modification, are permitted provided that the following conditions
    9  * are met:
   10  * 1. Redistributions of source code must retain the above copyright
   11  *    notice, this list of conditions and the following disclaimer.
   12  * 2. Redistributions in binary form must reproduce the above copyright
   13  *    notice, this list of conditions and the following disclaimer in the
   14  *    documentation and/or other materials provided with the distribution.
   15  *
   16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   26  * SUCH DAMAGE.
   27  *
   28  * $FreeBSD: src/sys/dev/ppbus/ppbconf.h,v 1.17.2.1 2000/05/24 00:20:57 n_hibma Exp $
   29  *
   30  */
   31 #ifndef __PPBUS_BASE_H
   32 #define __PPBUS_BASE_H
   33 
   34 #include <sys/bus.h>
   35 
   36 #include <dev/ppbus/ppbus_msq.h>
   37 
   38 
   39 /* Parallel Port Chipset control bits. */
   40 #define STROBE          0x01
   41 #define AUTOFEED        0x02
   42 #define nINIT           0x04
   43 #define SELECTIN        0x08
   44 #define IRQENABLE       0x10
   45 #define PCD             0x20
   46 
   47 #define nSTROBE         inv(STROBE)
   48 #define nAUTOFEED       inv(AUTOFEED)
   49 #define INIT            inv(nINIT)
   50 #define nSELECTIN       inv(SELECTIN)
   51 #define nPCD            inv(PCD)
   52 
   53 /* Parallel Port Chipset status bits. */
   54 #define TIMEOUT         0x01
   55 #define nFAULT          0x08
   56 #define SELECT          0x10
   57 #define PERROR          0x20
   58 #define nACK            0x40
   59 #define nBUSY           0x80
   60 
   61 /* Byte mode signals */
   62 #define HOSTCLK         nSTROBE /* Also ECP mode signal */
   63 #define HOSTBUSY        nAUTOFEED
   64 #define ACTIVE1284      nSELECTIN /* Also ECP mode signal */
   65 #define PTRCLK          nACK
   66 #define PTRBUSY         BUSY
   67 #define ACKDATAREQ      PERROR
   68 #define XFLAG           SELECT /* Also ECP mode signal */
   69 #define nDATAVAIL       nERROR
   70 
   71 /* ECP mode signals */
   72 #define HOSTACK         nAUTOFEED
   73 #define nREVREQ         nINIT
   74 #define PERICLK         nACK
   75 #define PERIACK         BUSY
   76 #define nACKREV         PERROR
   77 #define nPERIREQ        nERROR
   78 
   79 /* EPP mode signals */
   80 #define nWRITE          nSTROBE
   81 #define nDATASTB        nAUTOFEED
   82 #define nADDRSTB        nSELECTIN
   83 #define nWAIT           BUSY
   84 /*
   85 #define nINIT           nRESET
   86 #define nACK            nINTR
   87 */
   88 
   89 /* ECR register bit definitions */
   90 #define ECR_FIFO_EMPTY        0x1     /* ecr register - bit 0 */
   91 #define ECR_FIFO_FULL         0x2     /* ecr register - bit 1 */
   92 #define ECR_SERVICE_INTR      0x4     /* ecr register - bit 2 */
   93 #define ECR_ENABLE_DMA        0x8     /* ecr register - bit 3 */
   94 #define ECR_nFAULT_INTR       0x10    /* ecr register - bit 4 */
   95 /* bits 5 through 7 */
   96 #define ECR_STD           0x00    /* Standard mode */
   97 #define ECR_PS2           0x20    /* Bidirectional mode */
   98 #define ECR_FIFO          0x40    /* Fast Centronics mode */
   99 #define ECR_ECP           0x60    /* ECP mode */
  100 #define ECR_EPP           0x80    /* EPP mode */
  101 #define ECR_TST           0xc0    /* Test mode*/
  102 
  103 /* Used for IEEE 1284 'PNP' detection */
  104 #define PPBUS_PNP_PRINTER       0
  105 #define PPBUS_PNP_MODEM         1
  106 #define PPBUS_PNP_NET           2
  107 #define PPBUS_PNP_HDC           3
  108 #define PPBUS_PNP_PCMCIA        4
  109 #define PPBUS_PNP_MEDIA         5
  110 #define PPBUS_PNP_FDC           6
  111 #define PPBUS_PNP_PORTS         7
  112 #define PPBUS_PNP_SCANNER       8
  113 #define PPBUS_PNP_DIGICAM       9
  114 #define PPBUS_PNP_UNKNOWN       10
  115 
  116 
  117 /* Structure to store status information. */
  118 struct ppbus_status {
  119         unsigned char status;
  120 
  121         unsigned int timeout:1;
  122         unsigned int error:1;
  123         unsigned int select:1;
  124         unsigned int paper_end:1;
  125         unsigned int ack:1;
  126         unsigned int busy:1;
  127 };
  128 
  129 /* How tsleep() is called in ppbus_request_bus(). */
  130 #define PPBUS_DONTWAIT  0
  131 #define PPBUS_NOINTR    0
  132 #define PPBUS_WAIT      0x1
  133 #define PPBUS_INTR      0x2
  134 #define PPBUS_POLL      0x4
  135 #define PPBUS_FOREVER   -1
  136 
  137 
  138 /* PPBUS interface functions (includes parport interface) */
  139 int ppbus_scan_bus(device_t);
  140 void ppbus_pnp_detect(device_t);
  141 int ppbus_request_bus(device_t, device_t, int, unsigned int);
  142 int ppbus_release_bus(device_t, device_t, int, unsigned int);
  143 int ppbus_get_status(device_t, struct ppbus_status *);
  144 int ppbus_poll_bus(device_t, int, char, char, int);
  145 
  146 /* Parport interface function prototypes */
  147 int ppbus_read_ivar(device_t, int, unsigned int *);
  148 int ppbus_write_ivar(device_t, int, unsigned int *);
  149 int ppbus_reset_epp_timeout(device_t);
  150 int ppbus_ecp_sync(device_t);
  151 int ppbus_set_mode(device_t, int, int);
  152 int ppbus_get_mode(device_t);
  153 int ppbus_write(device_t, char *, int, int, size_t *);
  154 int ppbus_read(device_t, char *, int, int, size_t *);
  155 int ppbus_exec_microseq(device_t, struct ppbus_microseq * *);
  156 int ppbus_io(device_t, int, u_char *, int, u_char);
  157 int ppbus_dma_malloc(device_t, void **, bus_addr_t *, bus_size_t);
  158 int ppbus_dma_free(device_t, void **, bus_addr_t *, bus_size_t);
  159 int ppbus_add_handler(device_t, void (*)(void *), void *);
  160 int ppbus_remove_handler(device_t, void (*)(void *));
  161 
  162 #endif /* __PPBUS_BASE_H */

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