1 /* $NetBSD: wdcvar.h,v 1.97 2013/02/03 20:13:28 jakllsch Exp $ */ 2 3 /*- 4 * Copyright (c) 1998, 2003, 2004 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Charles M. Hannum, by Onno van der Linden and by Manuel Bouyer. 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 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #ifndef _DEV_IC_WDCVAR_H_ 33 #define _DEV_IC_WDCVAR_H_ 34 35 #include <sys/callout.h> 36 37 #include <dev/ata/ataconf.h> 38 #include <dev/ic/wdcreg.h> 39 40 #define WAITTIME (10 * hz) /* time to wait for a completion */ 41 /* this is a lot for hard drives, but not for cdroms */ 42 43 #define WDC_NREG 8 /* number of command registers */ 44 #define WDC_NSHADOWREG 2 /* number of command "shadow" registers */ 45 46 #define WDC_MAXDRIVES 2 /* absolute max number of drives per channel */ 47 48 struct wdc_regs { 49 /* Our registers */ 50 bus_space_tag_t cmd_iot; 51 bus_space_handle_t cmd_baseioh; 52 bus_size_t cmd_ios; 53 bus_space_handle_t cmd_iohs[WDC_NREG+WDC_NSHADOWREG]; 54 bus_space_tag_t ctl_iot; 55 bus_space_handle_t ctl_ioh; 56 bus_size_t ctl_ios; 57 58 /* data32{iot,ioh} are only used for 32-bit data xfers */ 59 bus_space_tag_t data32iot; 60 bus_space_handle_t data32ioh; 61 62 /* SATA native registers */ 63 bus_space_tag_t sata_iot; 64 bus_space_handle_t sata_baseioh; 65 bus_space_handle_t sata_control; 66 bus_space_handle_t sata_status; 67 bus_space_handle_t sata_error; 68 69 }; 70 71 /* 72 * Per-controller data 73 */ 74 struct wdc_softc { 75 struct atac_softc sc_atac; /* generic ATA controller info */ 76 77 struct wdc_regs *regs; /* register array (per-channel) */ 78 79 int wdc_maxdrives; /* max number of drives per channel */ 80 81 int cap; /* controller capabilities */ 82 #define WDC_CAPABILITY_NO_EXTRA_RESETS 0x0100 /* only reset once */ 83 #define WDC_CAPABILITY_PREATA 0x0200 /* ctrl can be a pre-ata one */ 84 #define WDC_CAPABILITY_WIDEREGS 0x0400 /* ctrl has wide (16bit) registers */ 85 #define WDC_CAPABILITY_NO_AUXCTL 0x0800 /* ctrl has no aux control registers */ 86 87 #if NATA_DMA || NATA_PIOBM 88 /* if WDC_CAPABILITY_DMA set in 'cap' */ 89 void *dma_arg; 90 int (*dma_init)(void *, int, int, void *, size_t, int); 91 void (*dma_start)(void *, int, int); 92 int (*dma_finish)(void *, int, int, int); 93 #if NATA_PIOBM 94 void (*piobm_start)(void *, int, int, int, int, int); 95 void (*piobm_done)(void *, int, int); 96 #endif 97 /* flags passed to dma_init */ 98 #define WDC_DMA_READ 0x01 99 #define WDC_DMA_IRQW 0x02 100 #define WDC_DMA_LBA48 0x04 101 #define WDC_DMA_PIOBM_ATA 0x08 102 #define WDC_DMA_PIOBM_ATAPI 0x10 103 #if NATA_PIOBM 104 /* flags passed to piobm_start */ 105 #define WDC_PIOBM_XFER_IRQ 0x01 106 #endif 107 108 /* values passed to dma_finish */ 109 #define WDC_DMAEND_END 0 /* check for proper end of a DMA xfer */ 110 #define WDC_DMAEND_ABRT 1 /* abort a DMA xfer, verbose */ 111 #define WDC_DMAEND_ABRT_QUIET 2 /* abort a DMA xfer, quiet */ 112 113 int dma_status; /* status returned from dma_finish() */ 114 #define WDC_DMAST_NOIRQ 0x01 /* missing IRQ */ 115 #define WDC_DMAST_ERR 0x02 /* DMA error */ 116 #define WDC_DMAST_UNDER 0x04 /* DMA underrun */ 117 #endif /* NATA_DMA || NATA_PIOBM */ 118 119 /* Optional callback to select drive. */ 120 void (*select)(struct ata_channel *,int); 121 122 /* Optional callback to ack IRQ. */ 123 void (*irqack)(struct ata_channel *); 124 125 /* Optional callback to perform a bus reset */ 126 void (*reset)(struct ata_channel *, int); 127 128 /* overridden if the backend has a different data transfer method */ 129 void (*datain_pio)(struct ata_channel *, int, void *, size_t); 130 void (*dataout_pio)(struct ata_channel *, int, void *, size_t); 131 }; 132 133 /* Given an ata_channel, get the wdc_softc. */ 134 #define CHAN_TO_WDC(chp) ((struct wdc_softc *)(chp)->ch_atac) 135 136 /* Given an ata_channel, get the wdc_regs. */ 137 #define CHAN_TO_WDC_REGS(chp) (&CHAN_TO_WDC(chp)->regs[(chp)->ch_channel]) 138 139 /* 140 * Public functions which can be called by ATA or ATAPI specific parts, 141 * or bus-specific backends. 142 */ 143 144 void wdc_allocate_regs(struct wdc_softc *); 145 void wdc_init_shadow_regs(struct ata_channel *); 146 147 int wdcprobe(struct ata_channel *); 148 void wdcattach(struct ata_channel *); 149 int wdcdetach(device_t, int); 150 void wdc_childdetached(device_t, device_t); 151 int wdcintr(void *); 152 153 void wdc_sataprobe(struct ata_channel *); 154 void wdc_drvprobe(struct ata_channel *); 155 156 void wdcrestart(void*); 157 158 int wdcwait(struct ata_channel *, int, int, int, int); 159 #define WDCWAIT_OK 0 /* we have what we asked */ 160 #define WDCWAIT_TOUT -1 /* timed out */ 161 #define WDCWAIT_THR 1 /* return, the kernel thread has been awakened */ 162 163 void wdcbit_bucket(struct ata_channel *, int); 164 165 int wdc_dmawait(struct ata_channel *, struct ata_xfer *, int); 166 void wdccommand(struct ata_channel *, u_int8_t, u_int8_t, u_int16_t, 167 u_int8_t, u_int8_t, u_int8_t, u_int8_t); 168 void wdccommandext(struct ata_channel *, u_int8_t, u_int8_t, u_int64_t, 169 u_int16_t, u_int16_t, u_int8_t); 170 void wdccommandshort(struct ata_channel *, int, int); 171 void wdctimeout(void *arg); 172 void wdc_reset_drive(struct ata_drive_datas *, int, uint32_t *); 173 void wdc_reset_channel(struct ata_channel *, int); 174 void wdc_do_reset(struct ata_channel *, int); 175 176 int wdc_exec_command(struct ata_drive_datas *, struct ata_command*); 177 178 /* 179 * ST506 spec says that if READY or SEEKCMPLT go off, then the read or write 180 * command is aborted. 181 */ 182 #define wdc_wait_for_drq(chp, timeout, flags) \ 183 wdcwait((chp), WDCS_DRQ, WDCS_DRQ, (timeout), (flags)) 184 #define wdc_wait_for_unbusy(chp, timeout, flags) \ 185 wdcwait((chp), 0, 0, (timeout), (flags)) 186 #define wdc_wait_for_ready(chp, timeout, flags) \ 187 wdcwait((chp), WDCS_DRDY, WDCS_DRDY, (timeout), (flags)) 188 189 /* ATA/ATAPI specs says a device can take 31s to reset */ 190 #define WDC_RESET_WAIT 31000 191 192 void wdc_atapibus_attach(struct atabus_softc *); 193 194 #endif /* _DEV_IC_WDCVAR_H_ */ 195