mlx_disk.c revision 138090
151973Smsmith/*- 251973Smsmith * Copyright (c) 1999 Jonathan Lemon 351973Smsmith * Copyright (c) 1999 Michael Smith 451973Smsmith * All rights reserved. 551973Smsmith * 651973Smsmith * Redistribution and use in source and binary forms, with or without 751973Smsmith * modification, are permitted provided that the following conditions 851973Smsmith * are met: 951973Smsmith * 1. Redistributions of source code must retain the above copyright 1051973Smsmith * notice, this list of conditions and the following disclaimer. 1151973Smsmith * 2. Redistributions in binary form must reproduce the above copyright 1251973Smsmith * notice, this list of conditions and the following disclaimer in the 1351973Smsmith * documentation and/or other materials provided with the distribution. 1451973Smsmith * 1551973Smsmith * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 1651973Smsmith * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 1751973Smsmith * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 1851973Smsmith * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 1951973Smsmith * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 2051973Smsmith * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2151973Smsmith * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2251973Smsmith * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 2351973Smsmith * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 2451973Smsmith * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 2551973Smsmith * SUCH DAMAGE. 2651973Smsmith * 2751973Smsmith */ 2851973Smsmith 29119418Sobrien#include <sys/cdefs.h> 30119418Sobrien__FBSDID("$FreeBSD: head/sys/dev/mlx/mlx_disk.c 138090 2004-11-25 12:15:49Z scottl $"); 31119418Sobrien 3251973Smsmith/* 3351973Smsmith * Disk driver for Mylex DAC960 RAID adapters. 3451973Smsmith */ 3551973Smsmith 3651973Smsmith#include <sys/param.h> 3751973Smsmith#include <sys/systm.h> 3851973Smsmith#include <sys/kernel.h> 39129879Sphk#include <sys/module.h> 4051973Smsmith 4151973Smsmith#include <sys/bus.h> 4251973Smsmith#include <sys/conf.h> 4351973Smsmith 4451973Smsmith#include <machine/bus.h> 4551973Smsmith#include <sys/rman.h> 4651973Smsmith 47112946Sphk#include <geom/geom_disk.h> 48112946Sphk 4978752Smsmith#include <dev/mlx/mlx_compat.h> 5051973Smsmith#include <dev/mlx/mlxio.h> 5151973Smsmith#include <dev/mlx/mlxvar.h> 5252544Smsmith#include <dev/mlx/mlxreg.h> 5351973Smsmith 5451973Smsmith/* prototypes */ 5551973Smsmithstatic int mlxd_probe(device_t dev); 5651973Smsmithstatic int mlxd_attach(device_t dev); 5751973Smsmithstatic int mlxd_detach(device_t dev); 5851973Smsmith 5959136Smsmithdevclass_t mlxd_devclass; 6051973Smsmith 6151973Smsmithstatic device_method_t mlxd_methods[] = { 6251973Smsmith DEVMETHOD(device_probe, mlxd_probe), 6351973Smsmith DEVMETHOD(device_attach, mlxd_attach), 6451973Smsmith DEVMETHOD(device_detach, mlxd_detach), 6551973Smsmith { 0, 0 } 6651973Smsmith}; 6751973Smsmith 6851973Smsmithstatic driver_t mlxd_driver = { 6951973Smsmith "mlxd", 7051973Smsmith mlxd_methods, 7151973Smsmith sizeof(struct mlxd_softc) 7251973Smsmith}; 7351973Smsmith 7451973SmsmithDRIVER_MODULE(mlxd, mlx, mlxd_driver, mlxd_devclass, 0, 0); 7551973Smsmith 7651973Smsmithstatic int 77111469Sphkmlxd_open(struct disk *dp) 7851973Smsmith{ 79111469Sphk struct mlxd_softc *sc = (struct mlxd_softc *)dp->d_drv1; 8051973Smsmith 8158188Smsmith debug_called(1); 8251973Smsmith 8351973Smsmith if (sc == NULL) 8451973Smsmith return (ENXIO); 8551973Smsmith 8651973Smsmith /* controller not active? */ 8751973Smsmith if (sc->mlxd_controller->mlx_state & MLX_STATE_SHUTDOWN) 8851973Smsmith return(ENXIO); 8951973Smsmith 9051973Smsmith sc->mlxd_flags |= MLXD_OPEN; 9151973Smsmith return (0); 9251973Smsmith} 9351973Smsmith 9451973Smsmithstatic int 95111469Sphkmlxd_close(struct disk *dp) 9651973Smsmith{ 97111469Sphk struct mlxd_softc *sc = (struct mlxd_softc *)dp->d_drv1; 9851973Smsmith 9958188Smsmith debug_called(1); 10051973Smsmith 10151973Smsmith if (sc == NULL) 10251973Smsmith return (ENXIO); 10351973Smsmith sc->mlxd_flags &= ~MLXD_OPEN; 10451973Smsmith return (0); 10551973Smsmith} 10651973Smsmith 10751973Smsmithstatic int 108111469Sphkmlxd_ioctl(struct disk *dp, u_long cmd, void *addr, int flag, struct thread *td) 10951973Smsmith{ 110111469Sphk struct mlxd_softc *sc = (struct mlxd_softc *)dp->d_drv1; 11151973Smsmith int error; 11251973Smsmith 11358188Smsmith debug_called(1); 11451973Smsmith 11551973Smsmith if (sc == NULL) 11651973Smsmith return (ENXIO); 11751973Smsmith 11883366Sjulian if ((error = mlx_submit_ioctl(sc->mlxd_controller, sc->mlxd_drive, cmd, addr, flag, td)) != ENOIOCTL) { 11958188Smsmith debug(0, "mlx_submit_ioctl returned %d\n", error); 12051973Smsmith return(error); 12151973Smsmith } 12251973Smsmith return (ENOTTY); 12351973Smsmith} 12451973Smsmith 12551973Smsmith/* 12651973Smsmith * Read/write routine for a buffer. Finds the proper unit, range checks 12751973Smsmith * arguments, and schedules the transfer. Does not wait for the transfer 12851973Smsmith * to complete. Multi-page transfers are supported. All I/O requests must 12951973Smsmith * be a multiple of a sector in length. 13051973Smsmith */ 13151973Smsmithstatic void 13278752Smsmithmlxd_strategy(mlx_bio *bp) 13351973Smsmith{ 13478752Smsmith struct mlxd_softc *sc = (struct mlxd_softc *)MLX_BIO_SOFTC(bp); 13551973Smsmith 13658188Smsmith debug_called(1); 13751973Smsmith 13851973Smsmith /* bogus disk? */ 13951973Smsmith if (sc == NULL) { 14078752Smsmith MLX_BIO_SET_ERROR(bp, EINVAL); 14151973Smsmith goto bad; 14251973Smsmith } 14351973Smsmith 14451973Smsmith /* XXX may only be temporarily offline - sleep? */ 14551973Smsmith if (sc->mlxd_drive->ms_state == MLX_SYSD_OFFLINE) { 14678752Smsmith MLX_BIO_SET_ERROR(bp, ENXIO); 14751973Smsmith goto bad; 14851973Smsmith } 14951973Smsmith 15078752Smsmith MLX_BIO_STATS_START(bp); 15151973Smsmith mlx_submit_buf(sc->mlxd_controller, bp); 15251973Smsmith return; 15351973Smsmith 15451973Smsmith bad: 15551973Smsmith /* 15678752Smsmith * Correctly set the bio to indicate a failed tranfer. 15751973Smsmith */ 15878752Smsmith MLX_BIO_RESID(bp) = MLX_BIO_LENGTH(bp); 15978752Smsmith MLX_BIO_DONE(bp); 16051973Smsmith return; 16151973Smsmith} 16251973Smsmith 16351973Smsmithvoid 16451973Smsmithmlxd_intr(void *data) 16551973Smsmith{ 16678752Smsmith mlx_bio *bp = (mlx_bio *)data; 16751973Smsmith 16858188Smsmith debug_called(1); 16951973Smsmith 17078752Smsmith if (MLX_BIO_HAS_ERROR(bp)) 17178752Smsmith MLX_BIO_SET_ERROR(bp, EIO); 17251973Smsmith else 17378752Smsmith MLX_BIO_RESID(bp) = 0; 17451973Smsmith 17578752Smsmith MLX_BIO_STATS_END(bp); 17678752Smsmith MLX_BIO_DONE(bp); 17751973Smsmith} 17851973Smsmith 17951973Smsmithstatic int 18051973Smsmithmlxd_probe(device_t dev) 18151973Smsmith{ 18251973Smsmith 18358188Smsmith debug_called(1); 18451973Smsmith 18551973Smsmith device_set_desc(dev, "Mylex System Drive"); 18651973Smsmith return (0); 18751973Smsmith} 18851973Smsmith 18951973Smsmithstatic int 19051973Smsmithmlxd_attach(device_t dev) 19151973Smsmith{ 19251973Smsmith struct mlxd_softc *sc = (struct mlxd_softc *)device_get_softc(dev); 19351973Smsmith device_t parent; 19451973Smsmith char *state; 19560074Smsmith int s1, s2; 19651973Smsmith 19758188Smsmith debug_called(1); 19851973Smsmith 19951973Smsmith parent = device_get_parent(dev); 20051973Smsmith sc->mlxd_controller = (struct mlx_softc *)device_get_softc(parent); 20151973Smsmith sc->mlxd_unit = device_get_unit(dev); 20251973Smsmith sc->mlxd_drive = device_get_ivars(dev); 20352273Smsmith sc->mlxd_dev = dev; 20451973Smsmith 20551973Smsmith switch(sc->mlxd_drive->ms_state) { 20651973Smsmith case MLX_SYSD_ONLINE: 20751973Smsmith state = "online"; 20851973Smsmith break; 20951973Smsmith case MLX_SYSD_CRITICAL: 21051973Smsmith state = "critical"; 21151973Smsmith break; 21251973Smsmith case MLX_SYSD_OFFLINE: 21351973Smsmith state = "offline"; 21451973Smsmith break; 21551973Smsmith default: 21651973Smsmith state = "unknown state"; 21751973Smsmith } 21851973Smsmith 21952785Smsmith device_printf(dev, "%uMB (%u sectors) RAID %d (%s)\n", 22051973Smsmith sc->mlxd_drive->ms_size / ((1024 * 1024) / MLX_BLKSIZE), 22151973Smsmith sc->mlxd_drive->ms_size, sc->mlxd_drive->ms_raidlevel, state); 22251973Smsmith 223125975Sphk sc->mlxd_disk = disk_alloc(); 224125975Sphk sc->mlxd_disk->d_open = mlxd_open; 225125975Sphk sc->mlxd_disk->d_close = mlxd_close; 226125975Sphk sc->mlxd_disk->d_ioctl = mlxd_ioctl; 227125975Sphk sc->mlxd_disk->d_strategy = mlxd_strategy; 228125975Sphk sc->mlxd_disk->d_name = "mlxd"; 229125975Sphk sc->mlxd_disk->d_unit = sc->mlxd_unit; 230125975Sphk sc->mlxd_disk->d_drv1 = sc; 231125975Sphk sc->mlxd_disk->d_sectorsize = MLX_BLKSIZE; 232125975Sphk sc->mlxd_disk->d_mediasize = MLX_BLKSIZE * (off_t)sc->mlxd_drive->ms_size; 233125975Sphk sc->mlxd_disk->d_fwsectors = sc->mlxd_drive->ms_sectors; 234125975Sphk sc->mlxd_disk->d_fwheads = sc->mlxd_drive->ms_heads; 235125975Sphk sc->mlxd_disk->d_flags = DISKFLAG_NEEDSGIANT; 23651973Smsmith 23760074Smsmith /* 23860074Smsmith * Set maximum I/O size to the lesser of the recommended maximum and the practical 239111499Sjhb * maximum except on v2 cards where the maximum is set to 8 pages. 24060074Smsmith */ 241111499Sjhb if (sc->mlxd_controller->mlx_iftype == MLX_IFTYPE_2) 242138090Sscottl sc->mlxd_disk->d_maxsize = 8 * MLX_PAGE_SIZE; 243111499Sjhb else { 244111499Sjhb s1 = sc->mlxd_controller->mlx_enq2->me_maxblk * MLX_BLKSIZE; 245138090Sscottl s2 = (sc->mlxd_controller->mlx_enq2->me_max_sg - 1) * MLX_PAGE_SIZE; 246125975Sphk sc->mlxd_disk->d_maxsize = imin(s1, s2); 247111499Sjhb } 24852225Smsmith 249125975Sphk disk_create(sc->mlxd_disk, DISK_VERSION); 250111469Sphk 25151973Smsmith return (0); 25251973Smsmith} 25351973Smsmith 25451973Smsmithstatic int 25551973Smsmithmlxd_detach(device_t dev) 25651973Smsmith{ 25751973Smsmith struct mlxd_softc *sc = (struct mlxd_softc *)device_get_softc(dev); 25851973Smsmith 25958188Smsmith debug_called(1); 26051973Smsmith 261125975Sphk disk_destroy(sc->mlxd_disk); 26251973Smsmith 26351973Smsmith return(0); 26451973Smsmith} 26551973Smsmith 266