1 /*- 2 * Copyright (c) 2010 by Panasas, Inc. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice immediately at the beginning of the file, without modification, 10 * this list of conditions, and the following disclaimer. 11 * 2. The name of the author may not be used to endorse or promote products 12 * derived from this software without specific prior written permission. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR 18 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 /* 27 * Virtual HBA defines 28 */ 29 30 #include <sys/param.h> 31 #include <sys/systm.h> 32 #include <sys/endian.h> 33 #include <sys/lock.h> 34 #include <sys/kernel.h> 35 #include <sys/queue.h> 36 #include <sys/queue.h> 37 #include <sys/malloc.h> 38 #include <sys/taskqueue.h> 39 #include <sys/mutex.h> 40 #include <sys/condvar.h> 41 42 #include <sys/proc.h> 43 44 #include <machine/bus.h> 45 #include <machine/cpu.h> 46 #include <machine/stdarg.h> 47 48 #include <cam/cam.h> 49 #include <cam/cam_debug.h> 50 #include <cam/cam_ccb.h> 51 #include <cam/cam_sim.h> 52 #include <cam/cam_xpt.h> 53 #include <cam/cam_xpt_sim.h> 54 #include <cam/cam_debug.h> 55 #include <cam/scsi/scsi_all.h> 56 #include <cam/scsi/scsi_message.h> 57 58 59 #include <sys/unistd.h> 60 #include <sys/kthread.h> 61 #include <sys/conf.h> 62 #include <sys/module.h> 63 #include <sys/ioccom.h> 64 #include <sys/devicestat.h> 65 #include <cam/cam_periph.h> 66 #include <cam/cam_xpt_periph.h> 67 68 #define VHBA_MAXTGT 64 69 #define VHBA_MAXCMDS 256 70 71 typedef struct { 72 struct mtx lock; 73 struct cam_sim * sim; 74 struct cam_devq * devq; 75 TAILQ_HEAD(, ccb_hdr) actv; 76 TAILQ_HEAD(, ccb_hdr) done; 77 void * private; 78 } vhba_softc_t; 79 80 /* 81 * Each different instantiation of a fake HBA needs to 82 * provide these as function entry points. It's responsible 83 * for setting up some thread or regular timeout that will 84 * dequeue things from the actv queue and put done items 85 * on the done queue. 86 */ 87 void vhba_init(vhba_softc_t *); 88 void vhba_fini(vhba_softc_t *); 89 void vhba_kick(vhba_softc_t *); 90 91 /* 92 * Support functions 93 */ 94 void vhba_fill_sense(struct ccb_scsiio *, uint8_t, uint8_t, uint8_t); 95 int vhba_rwparm(uint8_t *, uint64_t *, uint32_t *, uint64_t, uint32_t); 96 void vhba_default_cmd(struct ccb_scsiio *, lun_id_t, uint8_t *); 97 void vhba_set_status(struct ccb_hdr *, cam_status); 98 99 /* 100 * Common module loader function 101 */ 102 int vhba_modprobe(module_t, int, void *); 103 104 /* 105 * retrofits 106 */ 107 #ifndef MODE_SENSE 108 #define MODE_SENSE 0x1a 109 #endif 110 #ifndef SMS_FORMAT_DEVICE_PAGE 111 #define SMS_FORMAT_DEVICE_PAGE 0x03 112 #endif 113 #ifndef SMS_GEOMETRY_PAGE 114 #define SMS_GEOMETRY_PAGE 0x04 115 #endif 116