1 /* $NetBSD: pciide.c,v 1.8 2008/04/28 20:23:16 martin Exp $ */ 2 3 /*- 4 * Copyright (c) 2003 The NetBSD Foundation, Inc. 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 NETBSD FOUNDATION, INC. AND CONTRIBUTORS 17 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 18 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 19 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 20 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 26 * POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 #include <sys/types.h> 30 #include <lib/libsa/stand.h> 31 #include <mips/cpuregs.h> 32 33 #include "boot.h" 34 #include "wdvar.h" 35 36 #define COBALT_IO_SPACE_BASE 0x10000000 /* XXX VT82C586 ISA I/O space */ 37 38 int 39 pciide_init(struct wdc_channel *chp, u_int *unit) 40 { 41 uint32_t cmdreg, ctlreg; 42 int i, compatchan = 0; 43 44 /* 45 * two channels per chip, two drives per channel 46 */ 47 compatchan = *unit / PCIIDE_CHANNEL_NDEV; 48 if (compatchan >= PCIIDE_NUM_CHANNELS) 49 return (ENXIO); 50 *unit %= PCIIDE_CHANNEL_NDEV; 51 52 DPRINTF(("[pciide] unit: %d, channel: %d\n", *unit, compatchan)); 53 54 /* 55 * XXX map? 56 */ 57 cmdreg = MIPS_PHYS_TO_KSEG1(COBALT_IO_SPACE_BASE + 58 PCIIDE_COMPAT_CMD_BASE(compatchan)); 59 ctlreg = MIPS_PHYS_TO_KSEG1(COBALT_IO_SPACE_BASE + 60 PCIIDE_COMPAT_CTL_BASE(compatchan)); 61 62 /* set up cmd regsiters */ 63 chp->c_cmdbase = (uint8_t *)cmdreg; 64 chp->c_data = (uint16_t *)(cmdreg + wd_data); 65 for (i = 0; i < WDC_NPORTS; i++) 66 chp->c_cmdreg[i] = chp->c_cmdbase + i; 67 /* set up shadow registers */ 68 chp->c_cmdreg[wd_status] = chp->c_cmdreg[wd_command]; 69 chp->c_cmdreg[wd_features] = chp->c_cmdreg[wd_precomp]; 70 /* set up ctl registers */ 71 chp->c_ctlbase = (uint8_t *)ctlreg; 72 73 return 0; 74 } 75