1 /* $OpenBSD: pciidereg.h,v 1.3 2001/04/04 07:02:54 csapuntz Exp $ */ 2 /* $NetBSD: pciidereg.h,v 1.6 2000/11/14 18:42:58 thorpej Exp $ */ 3 4 /* 5 * Copyright (c) 1998 Christopher G. Demetriou. 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 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by Christopher G. Demetriou 18 * for the NetBSD Project. 19 * 4. The name of the author may not be used to endorse or promote products 20 * derived from this software without specific prior written permission 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 24 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 25 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 26 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 27 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 31 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34 /* 35 * PCI IDE controller register definitions. 36 * 37 * Author: Christopher G. Demetriou, March 2, 1998. 38 * 39 * See "PCI IDE Controller Specification, Revision 1.0 3/4/94" and 40 * "Programming Interface for Bus Master IDE Controller, Revision 1.0 41 * 5/16/94" from the PCI SIG. 42 */ 43 44 /* 45 * Number of channels per chip. MUST NOT CHANGE (macros in pciide.c and 46 * this file depend on its value). 47 */ 48 #define PCIIDE_NUM_CHANNELS 2 49 50 /* 51 * PCI base address register locations (some are per-channel). 52 */ 53 #define PCIIDE_REG_CMD_BASE(chan) (0x10 + (8 * (chan))) 54 #define PCIIDE_REG_CTL_BASE(chan) (0x14 + (8 * (chan))) 55 #define PCIIDE_REG_BUS_MASTER_DMA 0x20 56 57 /* 58 * Bits in the PCI Programming Interface register (some are per-channel). 59 * Bits 6-4 are defined as read-only in PCI 2.1 specification. 60 * Microsoft proposed to use these bits for independent channels 61 * enable/disable. This feature is enabled based on the value of bit 6. 62 */ 63 #define PCIIDE_CHANSTATUS_EN 0x40 64 #define PCIIDE_CHAN_EN(chan) (0x20 >> (chan)) 65 #define PCIIDE_INTERFACE_PCI(chan) (0x01 << (2 * (chan))) 66 #define PCIIDE_INTERFACE_SETTABLE(chan) (0x02 << (2 * (chan))) 67 #define PCIIDE_INTERFACE_BUS_MASTER_DMA 0x80 68 69 /* 70 * Compatibility address/IRQ definitions (some are per-channel). 71 */ 72 #define PCIIDE_COMPAT_CMD_BASE(chan) ((chan) == 0 ? 0x1f0 : 0x170) 73 #define PCIIDE_COMPAT_CMD_SIZE 8 74 #define PCIIDE_COMPAT_CTL_BASE(chan) ((chan) == 0 ? 0x3f6 : 0x376) 75 #define PCIIDE_COMPAT_CTL_SIZE 1 76 #define PCIIDE_COMPAT_IRQ(chan) ((chan) == 0 ? 14 : 15) 77 78 #define PCIIDE_CHANNEL_NAME(chan) ((chan) == 0 ? "channel 0" : "channel 1") 79 80 /* 81 * definitions for IDE DMA 82 * XXX maybe this should go elsewhere 83 */ 84 85 /* secondary channel registers offset */ 86 #define IDEDMA_SCH_OFFSET 0x08 87 88 /* Bus master command register */ 89 #define IDEDMA_CMD 0x00 90 #define IDEDMA_CMD_WRITE 0x08 91 #define IDEDMA_CMD_START 0x01 92 93 /* Bus master status register */ 94 #define IDEDMA_CTL 0x02 95 #define IDEDMA_CTL_DRV_DMA(d) (0x20 << (d)) 96 #define IDEDMA_CTL_INTR 0x04 97 #define IDEDMA_CTL_ERR 0x02 98 #define IDEDMA_CTL_ACT 0x01 99 100 /* Bus master table pointer register */ 101 #define IDEDMA_TBL 0x04 102 #define IDEDMA_TBL_MASK 0xfffffffc 103 #define IDEDMA_TBL_ALIGN 0x00010000 104 105 /* bus master table descriptor */ 106 struct idedma_table { 107 u_int32_t base_addr; /* physical base addr of memory region */ 108 u_int32_t byte_count; /* memory region length */ 109 #define IDEDMA_BYTE_COUNT_MASK 0x0000FFFF 110 #define IDEDMA_BYTE_COUNT_EOT 0x80000000 111 }; 112 113 #define IDEDMA_BYTE_COUNT_MAX 0x00010000 /* Max I/O per table */ 114 #define IDEDMA_BYTE_COUNT_ALIGN 0x00010000 115 116 /* Number of idedma table needed */ 117 #define NIDEDMA_TABLES (MAXPHYS/PAGE_SIZE + 1) 118