/* $NetBSD: wdcvar.h,v 1.79 2004/08/21 01:51:46 thorpej Exp $ */ /*- * Copyright (c) 1998, 2003 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Charles M. Hannum, by Onno van der Linden and by Manuel Bouyer. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the NetBSD * Foundation, Inc. and its contributors. * 4. Neither the name of The NetBSD Foundation nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ #ifndef _DEV_IC_WDCVAR_H_ #define _DEV_IC_WDCVAR_H_ #include #include #define WAITTIME (10 * hz) /* time to wait for a completion */ /* this is a lot for hard drives, but not for cdroms */ #define WDC_NREG 8 /* number of command registers */ #define WDC_NSHADOWREG 2 /* number of command "shadow" registers */ struct wdc_regs { /* Our registers */ bus_space_tag_t cmd_iot; bus_space_handle_t cmd_baseioh; bus_space_handle_t cmd_iohs[WDC_NREG+WDC_NSHADOWREG]; bus_space_tag_t ctl_iot; bus_space_handle_t ctl_ioh; /* data32{iot,ioh} are only used for 32-bit data xfers */ bus_space_tag_t data32iot; bus_space_handle_t data32ioh; }; /* * Per-controller data */ struct wdc_softc { struct atac_softc sc_atac; /* generic ATA controller info */ struct wdc_regs *regs; /* register array (per-channel) */ int cap; /* controller capabilities */ #define WDC_CAPABILITY_NO_EXTRA_RESETS 0x0100 /* only reset once */ #define WDC_CAPABILITY_PREATA 0x0200 /* ctrl can be a pre-ata one */ /* if WDC_CAPABILITY_DMA set in 'cap' */ void *dma_arg; int (*dma_init)(void *, int, int, void *, size_t, int); void (*dma_start)(void *, int, int); int (*dma_finish)(void *, int, int, int); /* flags passed to dma_init */ #define WDC_DMA_READ 0x01 #define WDC_DMA_IRQW 0x02 #define WDC_DMA_LBA48 0x04 /* values passed to dma_finish */ #define WDC_DMAEND_END 0 /* check for proper end of a DMA xfer */ #define WDC_DMAEND_ABRT 1 /* abort a DMA xfer, verbose */ #define WDC_DMAEND_ABRT_QUIET 2 /* abort a DMA xfer, quiet */ int dma_status; /* status returned from dma_finish() */ #define WDC_DMAST_NOIRQ 0x01 /* missing IRQ */ #define WDC_DMAST_ERR 0x02 /* DMA error */ #define WDC_DMAST_UNDER 0x04 /* DMA underrun */ /* Optional callback to select drive. */ void (*select)(struct ata_channel *,int); /* Optional callback to ack IRQ. */ void (*irqack)(struct ata_channel *); /* overridden if the backend has a different data transfer method */ void (*datain_pio)(struct ata_channel *, int, void *, size_t); void (*dataout_pio)(struct ata_channel *, int, void *, size_t); }; /* Given an ata_channel, get the wdc_softc. */ #define CHAN_TO_WDC(chp) ((struct wdc_softc *)(chp)->ch_atac) /* Given an ata_channel, get the wdc_regs. */ #define CHAN_TO_WDC_REGS(chp) (&CHAN_TO_WDC(chp)->regs[(chp)->ch_channel]) /* * Public functions which can be called by ATA or ATAPI specific parts, * or bus-specific backends. */ void wdc_allocate_regs(struct wdc_softc *); void wdc_init_shadow_regs(struct ata_channel *); int wdcprobe(struct ata_channel *); void wdcattach(struct ata_channel *); int wdcdetach(struct device *, int); int wdcactivate(struct device *, enum devact); int wdcintr(void *); void wdcrestart(void*); int wdcwait(struct ata_channel *, int, int, int, int); #define WDCWAIT_OK 0 /* we have what we asked */ #define WDCWAIT_TOUT -1 /* timed out */ #define WDCWAIT_THR 1 /* return, the kernel thread has been awakened */ void wdcbit_bucket(struct ata_channel *, int); int wdc_dmawait(struct ata_channel *, struct ata_xfer *, int); void wdccommand(struct ata_channel *, u_int8_t, u_int8_t, u_int16_t, u_int8_t, u_int8_t, u_int8_t, u_int8_t); void wdccommandext(struct ata_channel *, u_int8_t, u_int8_t, u_int64_t, u_int16_t); void wdccommandshort(struct ata_channel *, int, int); void wdctimeout(void *arg); void wdc_reset_drive(struct ata_drive_datas *, int); void wdc_reset_channel(struct ata_channel *, int); int wdc_exec_command(struct ata_drive_datas *, struct ata_command*); /* * ST506 spec says that if READY or SEEKCMPLT go off, then the read or write * command is aborted. */ #define wdc_wait_for_drq(chp, timeout, flags) \ wdcwait((chp), WDCS_DRQ, WDCS_DRQ, (timeout), (flags)) #define wdc_wait_for_unbusy(chp, timeout, flags) \ wdcwait((chp), 0, 0, (timeout), (flags)) #define wdc_wait_for_ready(chp, timeout, flags) \ wdcwait((chp), WDCS_DRDY, WDCS_DRDY, (timeout), (flags)) /* ATA/ATAPI specs says a device can take 31s to reset */ #define WDC_RESET_WAIT 31000 void wdc_atapibus_attach(struct atabus_softc *); #endif /* _DEV_IC_WDCVAR_H_ */