1 /* $NetBSD: pciide_opti_reg.h,v 1.3 2001/10/21 18:49:20 thorpej Exp $ */ 2 3 /*- 4 * Copyright (c) 2000 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Steve C. Woodford. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 /* 40 * Register definitions for OPTi PCIIDE controllers based on 41 * their 82c621 chip. 42 */ 43 44 /* IDE Initialization Control Register */ 45 #define OPTI_REG_INIT_CONTROL 0x40 46 #define OPTI_INIT_CONTROL_MODE_PIO_0 0 47 #define OPTI_INIT_CONTROL_MODE_PIO_1 2 48 #define OPTI_INIT_CONTROL_MODE_PIO_2 1 49 #define OPTI_INIT_CONTROL_MODE_PIO_3 3 50 #define OPTI_INIT_CONTROL_ADDR_RELOC (1u << 2) 51 #define OPTI_INIT_CONTROL_CH2_ENABLE 0 52 #define OPTI_INIT_CONTROL_CH2_DISABLE (1u << 3) 53 #define OPTI_INIT_CONTROL_FIFO_16 0 54 #define OPTI_INIT_CONTROL_FIFO_32 (1u << 5) 55 #define OPTI_INIT_CONTROL_FIFO_REQ_32 0 56 #define OPTI_INIT_CONTROL_FIFO_REQ_30 (1u << 6) 57 #define OPTI_INIT_CONTROL_FIFO_REQ_28 (2u << 6) 58 #define OPTI_INIT_CONTROL_FIFO_REQ_26 (3u << 6) 59 60 /* IDE Enhanced Features Register */ 61 #define OPTI_REG_ENH_FEAT 0x42 62 #define OPTI_ENH_FEAT_X111_ENABLE (1u << 1) 63 #define OPTI_ENH_FEAT_CONCURRENT_MAST (1u << 2) 64 #define OPTI_ENH_FEAT_PCI_INVALIDATE (1u << 3) 65 #define OPTI_ENH_FEAT_IDE_CONCUR (1u << 4) 66 #define OPTI_ENH_FEAT_SLAVE_FIFO_ISA (1u << 5) 67 68 /* IDE Enhanced Mode Register */ 69 #define OPTI_REG_ENH_MODE 0x43 70 #define OPTI_ENH_MODE_MASK(c,d) (3u << (((c) * 4) + ((d) * 2))) 71 #define OPTI_ENH_MODE_USE_TIMING(c,d) 0 72 #define OPTI_ENH_MODE(c,d,m) ((m) << (((c) * 4) + ((d) * 2))) 73 74 /* Timing registers */ 75 #define OPTI_REG_READ_CYCLE_TIMING 0x00 76 #define OPTI_REG_WRITE_CYCLE_TIMING 0x01 77 #define OPTI_RECOVERY_TIME_SHIFT 0 78 #define OPTI_PULSE_WIDTH_SHIFT 4 79 80 /* 81 * Control register. 82 */ 83 #define OPTI_REG_CONTROL 0x03 84 #define OPTI_CONTROL_DISABLE 0x11 85 #define OPTI_CONTROL_ENABLE 0x95 86 87 /* Strap register */ 88 #define OPTI_REG_STRAP 0x05 89 #define OPTI_STRAP_PCI_SPEED_MASK 0x1u 90 #define OPTI_STRAP_PCI_33 0 91 #define OPTI_STRAP_PCI_25 1 92 93 /* Miscellaneous register */ 94 #define OPTI_REG_MISC 0x06 95 #define OPTI_MISC_INDEX(d) ((unsigned)(d)) 96 #define OPTI_MISC_INDEX_MASK 0x01u 97 #define OPTI_MISC_DELAY_MASK 0x07u 98 #define OPTI_MISC_DELAY_SHIFT 1 99 #define OPTI_MISC_ADDR_SETUP_MASK 0x3u 100 #define OPTI_MISC_ADDR_SETUP_SHIFT 4 101 #define OPTI_MISC_READ_PREFETCH_ENABLE (1u << 6) 102 #define OPTI_MISC_ADDR_SETUP_MASK 0x3u 103 #define OPTI_MISC_WRITE_MASK 0x7fu 104 105 106 /* 107 * Inline functions for accessing the timing registers of the 108 * OPTi controller. 109 * 110 * These *MUST* disable interrupts as they need atomic access to 111 * certain magic registers. Failure to adhere to this *will* 112 * break things in subtle ways if the wdc registers are accessed 113 * by an interrupt routine while this magic sequence is executing. 114 */ 115 static __inline__ u_int8_t __attribute__((__unused__)) 116 opti_read_config(struct channel_softc *chp, int reg) 117 { 118 u_int8_t rv; 119 int s = splhigh(); 120 121 /* Two consecutive 16-bit reads from register #1 (0x1f1/0x171) */ 122 (void) bus_space_read_2(chp->cmd_iot, chp->cmd_ioh, wd_features); 123 (void) bus_space_read_2(chp->cmd_iot, chp->cmd_ioh, wd_features); 124 125 /* Followed by an 8-bit write of 0x3 to register #2 */ 126 bus_space_write_1(chp->cmd_iot, chp->cmd_ioh, wd_seccnt, 0x03u); 127 128 /* Now we can read the required register */ 129 rv = bus_space_read_1(chp->cmd_iot, chp->cmd_ioh, reg); 130 131 /* Restore the real registers */ 132 bus_space_write_1(chp->cmd_iot, chp->cmd_ioh, wd_seccnt, 0x83u); 133 134 splx(s); 135 136 return rv; 137 } 138 139 static __inline__ void __attribute__((__unused__)) 140 opti_write_config(struct channel_softc *chp, int reg, u_int8_t val) 141 { 142 int s = splhigh(); 143 144 /* Two consecutive 16-bit reads from register #1 (0x1f1/0x171) */ 145 (void) bus_space_read_2(chp->cmd_iot, chp->cmd_ioh, wd_features); 146 (void) bus_space_read_2(chp->cmd_iot, chp->cmd_ioh, wd_features); 147 148 /* Followed by an 8-bit write of 0x3 to register #2 */ 149 bus_space_write_1(chp->cmd_iot, chp->cmd_ioh, wd_seccnt, 0x03u); 150 151 /* Now we can write the required register */ 152 bus_space_write_1(chp->cmd_iot, chp->cmd_ioh, reg, val); 153 154 /* Restore the real registers */ 155 bus_space_write_1(chp->cmd_iot, chp->cmd_ioh, wd_seccnt, 0x83u); 156 157 splx(s); 158 } 159 160 /* 161 * These are the timing register values for the various IDE modes 162 * supported by the OPTi chip. The first index of the two-dimensional 163 * arrays is used for a 33MHz PCIbus, the second for a 25MHz PCIbus. 164 */ 165 static const u_int8_t opti_tim_cp[2][8] __attribute__((__unused__)) = { 166 /* Command Pulse */ 167 {5, 4, 3, 2, 2, 7, 2, 2}, 168 {4, 3, 2, 2, 1, 5, 2, 1} 169 }; 170 171 static const u_int8_t opti_tim_rt[2][8] __attribute__((__unused__)) = { 172 /* Recovery Time */ 173 {9, 4, 0, 0, 0, 6, 0, 0}, 174 {6, 2, 0, 0, 0, 4, 0, 0} 175 }; 176 177 static const u_int8_t opti_tim_as[2][8] __attribute__((__unused__)) = { 178 /* Address Setup */ 179 {2, 1, 1, 1, 0, 0, 0, 0}, 180 {1, 1, 0, 0, 0, 0, 0, 0} 181 }; 182 183 static const u_int8_t opti_tim_em[8] __attribute__((__unused__)) = { 184 /* Enhanced Mode */ 185 0, 0, 0, 1, 2, 0, 1 ,2 186 }; 187