Line data    Source code

       1             : /*      $OpenBSD: cy82c693.c,v 1.8 2015/03/14 03:38:48 jsg Exp $        */
       2             : /* $NetBSD: cy82c693.c,v 1.1 2000/06/06 03:07:39 thorpej Exp $ */
       3             : 
       4             : /*-
       5             :  * Copyright (c) 2000 The NetBSD Foundation, Inc.
       6             :  * All rights reserved.
       7             :  *
       8             :  * This code is derived from software contributed to The NetBSD Foundation
       9             :  * by Jason R. Thorpe.
      10             :  *
      11             :  * Redistribution and use in source and binary forms, with or without
      12             :  * modification, are permitted provided that the following conditions
      13             :  * are met:
      14             :  * 1. Redistributions of source code must retain the above copyright
      15             :  *    notice, this list of conditions and the following disclaimer.
      16             :  * 2. Redistributions in binary form must reproduce the above copyright
      17             :  *    notice, this list of conditions and the following disclaimer in the
      18             :  *    documentation and/or other materials provided with the distribution.
      19             :  *
      20             :  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
      21             :  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
      22             :  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
      23             :  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
      24             :  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
      25             :  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
      26             :  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
      27             :  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
      28             :  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
      29             :  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
      30             :  * POSSIBILITY OF SUCH DAMAGE.
      31             :  */
      32             : 
      33             : /*
      34             :  * Common routines to read/write control registers on the Cypress 82c693
      35             :  * hyperCache(tm) Stand-Alone PCI Peripheral Controller with USB.
      36             :  */
      37             : 
      38             : #include <sys/param.h>
      39             : #include <sys/device.h>
      40             : #include <sys/systm.h>
      41             : 
      42             : #include <machine/bus.h>
      43             : 
      44             : #include <dev/pci/pcivar.h>
      45             : 
      46             : #include <dev/pci/cy82c693reg.h>
      47             : #include <dev/pci/cy82c693var.h>
      48             : 
      49             : static struct cy82c693_handle cyhc_handle;
      50             : static int cyhc_initialized;
      51             : 
      52             : const struct cy82c693_handle *
      53           0 : cy82c693_init(bus_space_tag_t iot)
      54             : {
      55           0 :         bus_space_handle_t ioh;
      56             :         int error;
      57             : 
      58           0 :         if (cyhc_initialized) {
      59           0 :                 if (iot != cyhc_handle.cyhc_iot)
      60           0 :                         panic("cy82c693_init");
      61           0 :                 return (&cyhc_handle);
      62             :         }
      63             : 
      64           0 :         if ((error = bus_space_map(iot, CYHC_CONFIG_ADDR, 2, 0, &ioh)) != 0) {
      65           0 :                 printf("cy82c693_init: bus_space_map failed (%d)", error);
      66           0 :                 return (NULL);
      67             :         }
      68             : 
      69           0 :         cyhc_handle.cyhc_iot = iot;
      70           0 :         cyhc_handle.cyhc_ioh = ioh;
      71             : 
      72           0 :         cyhc_initialized = 1;
      73             : 
      74           0 :         return (&cyhc_handle);
      75           0 : }
      76             : 
      77             : u_int8_t
      78           0 : cy82c693_read(const struct cy82c693_handle *cyhc, int reg)
      79             : {
      80             :         u_int8_t rv;
      81             : 
      82           0 :         if (cyhc_initialized == 0)
      83           0 :                 panic("cy82c693_read");
      84             : 
      85           0 :         bus_space_write_1(cyhc->cyhc_iot, cyhc->cyhc_ioh, 0, reg);
      86           0 :         rv = bus_space_read_1(cyhc->cyhc_iot, cyhc->cyhc_ioh, 1);
      87             : 
      88           0 :         return (rv);
      89             : }
      90             : 
      91             : void
      92           0 : cy82c693_write(const struct cy82c693_handle *cyhc, int reg, u_int8_t val)
      93             : {
      94           0 :         if (cyhc_initialized == 0)
      95           0 :                 panic("cy82c693_write");
      96             : 
      97           0 :         bus_space_write_1(cyhc->cyhc_iot, cyhc->cyhc_ioh, 0, reg);
      98           0 :         bus_space_write_1(cyhc->cyhc_iot, cyhc->cyhc_ioh, 1, val);
      99           0 : }