sys/dev/disk/aic7xxx/aic79xx_osm.h

   1 /*
   2  * FreeBSD platform specific driver option settings, data structures,
   3  * function declarations and includes.
   4  *
   5  * Copyright (c) 1994-2001 Justin T. Gibbs.
   6  * Copyright (c) 2001-2002 Adaptec Inc.
   7  * All rights reserved.
   8  *
   9  * Redistribution and use in source and binary forms, with or without
  10  * modification, are permitted provided that the following conditions
  11  * are met:
  12  * 1. Redistributions of source code must retain the above copyright
  13  *    notice, this list of conditions, and the following disclaimer,
  14  *    without modification.
  15  * 2. The name of the author may not be used to endorse or promote products
  16  *    derived from this software without specific prior written permission.
  17  *
  18  * Alternatively, this software may be distributed under the terms of the
  19  * GNU Public License ("GPL").
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
  25  * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31  * SUCH DAMAGE.
  32  *
  33  * $Id: //depot/aic7xxx/freebsd/dev/aic7xxx/aic79xx_osm.h#23 $
  34  *
  35  * $FreeBSD: src/sys/dev/aic7xxx/aic79xx_osm.h,v 1.18 2005/12/06 11:19:36 ru Exp $
  36  * $DragonFly: src/sys/dev/disk/aic7xxx/aic79xx_osm.h,v 1.13 2008/02/10 00:01:02 pavalos Exp $
  37  */
  38
  39 #ifndef _AIC79XX_FREEBSD_H_
  40 #define _AIC79XX_FREEBSD_H_
  41
  42 #include <opt_aic79xx.h>        /* for config options */
  43
  44 #include <sys/param.h>
  45 #include <sys/systm.h>
  46 #include <sys/bus.h>            /* For device_t */
  47 #if defined(__FreeBSD__) && __FreeBSD_version >= 500000
  48 #include <sys/endian.h>
  49 #endif
  50 #include <sys/eventhandler.h>
  51 #include <sys/kernel.h>
  52 #include <sys/malloc.h>
  53 #include <sys/queue.h>
  54 #include <sys/thread2.h>
  55
  56 #define AIC_PCI_CONFIG 1
  57 #include <machine/endian.h>
  58 #include <machine/clock.h>
  59
  60 #include <sys/rman.h>
  61
  62 #include <bus/pci/pcireg.h>
  63 #include <bus/pci/pcivar.h>
  64
  65 #include <bus/cam/cam.h>
  66 #include <bus/cam/cam_ccb.h>
  67 #include <bus/cam/cam_debug.h>
  68 #include <bus/cam/cam_sim.h>
  69 #include <bus/cam/cam_xpt_sim.h>
  70
  71 #include <bus/cam/scsi/scsi_all.h>
  72 #include <bus/cam/scsi/scsi_message.h>
  73 #include <bus/cam/scsi/scsi_iu.h>
  74
  75 /****************************** Platform Macros *******************************/
  76 #define SIM_IS_SCSIBUS_B(ahd, sim)      \
  77         (0)
  78 #define SIM_CHANNEL(ahd, sim)   \
  79         ('A')
  80 #define SIM_SCSI_ID(ahd, sim)   \
  81         (ahd->our_id)
  82 #define SIM_PATH(ahd, sim)      \
  83         (ahd->platform_data->path)
  84 #define BUILD_SCSIID(ahd, sim, target_id, our_id) \
  85         ((((target_id) << TID_SHIFT) & TID) | (our_id))
  86
  87
  88 #define SCB_GET_SIM(ahd, scb) \
  89         ((ahd)->platform_data->sim)
  90
  91 #ifndef offsetof
  92 #define offsetof(type, member)  ((size_t)(&((type *)0)->member))
  93 #endif
  94
  95 /************************ Tunable Driver Parameters  **************************/
  96 /*
  97  * The number of dma segments supported.  The sequencer can handle any number
  98  * of physically contiguous S/G entrys.  To reduce the driver's memory
  99  * consumption, we limit the number supported to be sufficient to handle
 100  * the largest mapping supported by the kernel, MAXPHYS.  Assuming the
 101  * transfer is as fragmented as possible and unaligned, this turns out to
 102  * be the number of paged sized transfers in MAXPHYS plus an extra element
 103  * to handle any unaligned residual.  The sequencer fetches SG elements
 104  * in cacheline sized chucks, so make the number per-transaction an even
 105  * multiple of 16 which should align us on even the largest of cacheline
 106  * boundaries.
 107  */
 108 #define AHD_NSEG (roundup(btoc(MAXPHYS) + 1, 16))
 109
 110 /* This driver supports target mode */
 111 #ifdef NOT_YET
 112 #define AHD_TARGET_MODE 1
 113 #endif
 114
 115 /***************************** Core Includes **********************************/
 116 #ifdef AHD_REG_PRETTY_PRINT
 117 #define AIC_DEBUG_REGISTERS 1
 118 #else
 119 #define AIC_DEBUG_REGISTERS 0
 120 #endif
 121 #define AIC_CORE_INCLUDE "aic79xx.h"
 122 #define AIC_LIB_PREFIX ahd
 123 #define AIC_CONST_PREFIX AHD
 124 #include "aic_osm_lib.h"
 125
 126 /************************** Softc/SCB Platform Data ***************************/
 127 struct ahd_platform_data {
 128         /*
 129          * Hooks into the XPT.
 130          */
 131         struct  cam_sim         *sim;
 132         struct  cam_path        *path;
 133
 134         int                      regs_res_type[2];
 135         int                      regs_res_id[2];
 136         int                      irq_res_type;
 137         struct resource         *regs[2];
 138         struct resource         *irq;
 139         void                    *ih;
 140         eventhandler_tag         eh;
 141         struct thread           *recovery_thread;
 142         struct lock              lock;
 143 };
 144
 145 struct scb_platform_data {
 146 };
 147
 148 /*************************** Device Access ************************************/
 149 #define ahd_inb(ahd, port)                                      \
 150         bus_space_read_1((ahd)->tags[(port) >> 8],              \
 151                          (ahd)->bshs[(port) >> 8], (port) & 0xFF)
 152
 153 #define ahd_outb(ahd, port, value)                              \
 154         bus_space_write_1((ahd)->tags[(port) >> 8],             \
 155                           (ahd)->bshs[(port) >> 8], (port) & 0xFF, value)
 156
 157 #define ahd_inw_atomic(ahd, port)                               \
 158         aic_le16toh(bus_space_read_2((ahd)->tags[(port) >> 8],  \
 159                                      (ahd)->bshs[(port) >> 8], (port) & 0xFF))
 160
 161 #define ahd_outw_atomic(ahd, port, value)                       \
 162         bus_space_write_2((ahd)->tags[(port) >> 8],             \
 163                           (ahd)->bshs[(port) >> 8],             \
 164                           (port & 0xFF), aic_htole16(value))
 165
 166 #define ahd_outsb(ahd, port, valp, count)                       \
 167         bus_space_write_multi_1((ahd)->tags[(port) >> 8],       \
 168                                 (ahd)->bshs[(port) >> 8],       \
 169                                 (port & 0xFF), valp, count)
 170
 171 #define ahd_insb(ahd, port, valp, count)                        \
 172         bus_space_read_multi_1((ahd)->tags[(port) >> 8],        \
 173                                (ahd)->bshs[(port) >> 8],        \
 174                                (port & 0xFF), valp, count)
 175
 176 static __inline void ahd_flush_device_writes(struct ahd_softc *);
 177
 178 static __inline void
 179 ahd_flush_device_writes(struct ahd_softc *ahd)
 180 {
 181         /* XXX Is this sufficient for all architectures??? */
 182         ahd_inb(ahd, INTSTAT);
 183 }
 184
 185 /**************************** Locking Primitives ******************************/
 186 /* Lock protecting internal data structures */
 187 static __inline void ahd_lockinit(struct ahd_softc *);
 188 static __inline void ahd_lock(struct ahd_softc *);
 189 static __inline void ahd_unlock(struct ahd_softc *);
 190
 191 static __inline void
 192 ahd_lockinit(struct ahd_softc *ahd)
 193 {
 194         lockinit(&ahd->platform_data->lock, "ahd_lock", 0, LK_EXCLUSIVE|LK_CANRECURSE);
 195 }
 196
 197 static __inline void
 198 ahd_lock(struct ahd_softc *ahd)
 199 {
 200         lockmgr(&ahd->platform_data->lock, LK_EXCLUSIVE);
 201 }
 202
 203 static __inline void
 204 ahd_unlock(struct ahd_softc *ahd)
 205 {
 206         lockmgr(&ahd->platform_data->lock, LK_RELEASE);
 207 }
 208
 209 /********************************** PCI ***************************************/
 210 int ahd_pci_map_registers(struct ahd_softc *ahd);
 211 int ahd_pci_map_int(struct ahd_softc *ahd);
 212
 213 /************************** Transaction Operations ****************************/
 214 static __inline void aic_freeze_simq(struct aic_softc*);
 215 static __inline void aic_release_simq(struct aic_softc*);
 216
 217 static __inline void
 218 aic_freeze_simq(struct aic_softc *aic)
 219 {
 220         xpt_freeze_simq(aic->platform_data->sim, /*count*/1);
 221 }
 222
 223 static __inline void
 224 aic_release_simq(struct aic_softc *aic)
 225 {
 226         xpt_release_simq(aic->platform_data->sim, /*run queue*/TRUE);
 227 }
 228
 229 /********************************* Debug **************************************/
 230 static __inline void    ahd_print_path(struct ahd_softc *, struct scb *);
 231 static __inline void    ahd_platform_dump_card_state(struct ahd_softc *ahd);
 232
 233 static __inline void
 234 ahd_print_path(struct ahd_softc *ahd, struct scb *scb)
 235 {
 236         xpt_print_path(scb->io_ctx->ccb_h.path);
 237 }
 238
 239 static __inline void
 240 ahd_platform_dump_card_state(struct ahd_softc *ahd)
 241 {
 242         /* Nothing to do here for FreeBSD */
 243 }
 244 /**************************** Transfer Settings *******************************/
 245 void      ahd_notify_xfer_settings_change(struct ahd_softc *,
 246                                           struct ahd_devinfo *);
 247 void      ahd_platform_set_tags(struct ahd_softc *, struct ahd_devinfo *,
 248                                 int /*enable*/);
 249
 250 /************************* Initialization/Teardown ****************************/
 251 int       ahd_platform_alloc(struct ahd_softc *ahd, void *platform_arg);
 252 void      ahd_platform_free(struct ahd_softc *ahd);
 253 int       ahd_map_int(struct ahd_softc *ahd);
 254 int       ahd_attach(struct ahd_softc *);
 255 int       ahd_softc_comp(struct ahd_softc *lahd, struct ahd_softc *rahd);
 256 int       ahd_detach(device_t);
 257 #define ahd_platform_init(arg)
 258
 259
 260 /****************************** Interrupts ************************************/
 261 void                    ahd_platform_intr(void *);
 262 static __inline void    ahd_platform_flushwork(struct ahd_softc *ahd);
 263 static __inline void
 264 ahd_platform_flushwork(struct ahd_softc *ahd)
 265 {
 266 }
 267
 268 /************************ Misc Function Declarations **************************/
 269 void      ahd_done(struct ahd_softc *ahd, struct scb *scb);
 270 void      ahd_send_async(struct ahd_softc *, char /*channel*/,
 271                          u_int /*target*/, u_int /*lun*/, ac_code, void *arg);
 272 #endif  /* _AIC79XX_FREEBSD_H_ */