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 * $FreeBSD$ 36 */ 37 38 #ifndef _AIC79XX_FREEBSD_H_ 39 #define _AIC79XX_FREEBSD_H_ 40 41 #include <opt_aic79xx.h> /* for config options */ 42 43 #include <sys/param.h> 44 #include <sys/systm.h> 45 #include <sys/bus.h> /* For device_t */ 46 #if __FreeBSD_version >= 500000 47 #include <sys/endian.h> 48 #endif 49 #include <sys/eventhandler.h> 50 #include <sys/kernel.h> 51 #include <sys/malloc.h> 52 #include <sys/module.h> 53 #include <sys/queue.h> 54 55 #define AIC_PCI_CONFIG 1 56 #include <machine/bus.h> 57 #include <machine/endian.h> 58 #include <machine/resource.h> 59 60 #include <sys/rman.h> 61 62 #if __FreeBSD_version >= 500000 63 #include <dev/pci/pcireg.h> 64 #include <dev/pci/pcivar.h> 65 #else 66 #include <pci/pcireg.h> 67 #include <pci/pcivar.h> 68 #endif 69 70 #include <cam/cam.h> 71 #include <cam/cam_ccb.h> 72 #include <cam/cam_debug.h> 73 #include <cam/cam_sim.h> 74 #include <cam/cam_xpt_sim.h> 75 76 #include <cam/scsi/scsi_all.h> 77 #include <cam/scsi/scsi_message.h> 78 #include <cam/scsi/scsi_iu.h> 79 80 /****************************** Platform Macros *******************************/ 81 #define SIM_IS_SCSIBUS_B(ahd, sim) \ 82 (0) 83 #define SIM_CHANNEL(ahd, sim) \ 84 ('A') 85 #define SIM_SCSI_ID(ahd, sim) \ 86 (ahd->our_id) 87 #define SIM_PATH(ahd, sim) \ 88 (ahd->platform_data->path) 89 #define BUILD_SCSIID(ahd, sim, target_id, our_id) \ 90 ((((target_id) << TID_SHIFT) & TID) | (our_id)) 91 92 93 #define SCB_GET_SIM(ahd, scb) \ 94 ((ahd)->platform_data->sim) 95 96 #ifndef offsetof 97 #define offsetof(type, member) ((size_t)(&((type *)0)->member)) 98 #endif 99 100 /************************ Tunable Driver Parameters **************************/ 101 /* 102 * The number of dma segments supported. The sequencer can handle any number 103 * of physically contiguous S/G entrys. To reduce the driver's memory 104 * consumption, we limit the number supported to be sufficient to handle 105 * the largest mapping supported by the the legacy kernel MAXPHYS setting of 106 * 128K. This can be increased once some testing is done. Assuming the 107 * transfer is as fragmented as possible and unaligned, this turns out to 108 * be the number of paged sized transfers in MAXPHYS plus an extra element 109 * to handle any unaligned residual. The sequencer fetches SG elements 110 * in cacheline sized chucks, so make the number per-transaction an even 111 * multiple of 16 which should align us on even the largest of cacheline 112 * boundaries. 113 */ 114 #define AHD_MAXPHYS (128 * 1024) 115 #define AHD_NSEG (roundup(btoc(AHD_MAXPHYS) + 1, 16)) 116 117 /* This driver supports target mode */ 118 #ifdef NOT_YET 119 #define AHD_TARGET_MODE 1 120 #endif 121 122 /************************** Softc/SCB Platform Data ***************************/ 123 struct ahd_platform_data { 124 /* 125 * Hooks into the XPT. 126 */ 127 struct cam_sim *sim; 128 struct cam_path *path; 129 130 int regs_res_type[2]; 131 int regs_res_id[2]; 132 int irq_res_type; 133 struct resource *regs[2]; 134 struct resource *irq; 135 void *ih; 136 eventhandler_tag eh; 137 struct proc *recovery_thread; 138 struct mtx mtx; 139 }; 140 141 struct scb_platform_data { 142 }; 143 144 /***************************** Core Includes **********************************/ 145 #ifdef AHD_REG_PRETTY_PRINT 146 #define AIC_DEBUG_REGISTERS 1 147 #else 148 #define AIC_DEBUG_REGISTERS 0 149 #endif 150 #define AIC_CORE_INCLUDE <dev/aic7xxx/aic79xx.h> 151 #define AIC_LIB_PREFIX ahd 152 #define AIC_CONST_PREFIX AHD 153 #include <dev/aic7xxx/aic_osm_lib.h> 154 155 /*************************** Device Access ************************************/ 156 #define ahd_inb(ahd, port) \ 157 bus_space_read_1((ahd)->tags[(port) >> 8], \ 158 (ahd)->bshs[(port) >> 8], (port) & 0xFF) 159 160 #define ahd_outb(ahd, port, value) \ 161 bus_space_write_1((ahd)->tags[(port) >> 8], \ 162 (ahd)->bshs[(port) >> 8], (port) & 0xFF, value) 163 164 #define ahd_inw_atomic(ahd, port) \ 165 aic_le16toh(bus_space_read_2((ahd)->tags[(port) >> 8], \ 166 (ahd)->bshs[(port) >> 8], (port) & 0xFF)) 167 168 #define ahd_outw_atomic(ahd, port, value) \ 169 bus_space_write_2((ahd)->tags[(port) >> 8], \ 170 (ahd)->bshs[(port) >> 8], \ 171 (port & 0xFF), aic_htole16(value)) 172 173 #define ahd_outsb(ahd, port, valp, count) \ 174 bus_space_write_multi_1((ahd)->tags[(port) >> 8], \ 175 (ahd)->bshs[(port) >> 8], \ 176 (port & 0xFF), valp, count) 177 178 #define ahd_insb(ahd, port, valp, count) \ 179 bus_space_read_multi_1((ahd)->tags[(port) >> 8], \ 180 (ahd)->bshs[(port) >> 8], \ 181 (port & 0xFF), valp, count) 182 183 static __inline void ahd_flush_device_writes(struct ahd_softc *); 184 185 static __inline void 186 ahd_flush_device_writes(struct ahd_softc *ahd) 187 { 188 /* XXX Is this sufficient for all architectures??? */ 189 ahd_inb(ahd, INTSTAT); 190 } 191 192 /**************************** Locking Primitives ******************************/ 193 /* Lock protecting internal data structures */ 194 static __inline void ahd_lockinit(struct ahd_softc *); 195 static __inline void ahd_lock(struct ahd_softc *); 196 static __inline void ahd_unlock(struct ahd_softc *); 197 198 static __inline void 199 ahd_lockinit(struct ahd_softc *ahd) 200 { 201 mtx_init(&ahd->platform_data->mtx, "ahd_lock", NULL, MTX_DEF); 202 } 203 204 static __inline void 205 ahd_lock(struct ahd_softc *ahd) 206 { 207 mtx_lock(&ahd->platform_data->mtx); 208 } 209 210 static __inline void 211 ahd_unlock(struct ahd_softc *ahd) 212 { 213 mtx_unlock(&ahd->platform_data->mtx); 214 } 215 216 /********************************** PCI ***************************************/ 217 int ahd_pci_map_registers(struct ahd_softc *ahd); 218 int ahd_pci_map_int(struct ahd_softc *ahd); 219 220 /************************** Transaction Operations ****************************/ 221 static __inline void aic_freeze_simq(struct aic_softc*); 222 static __inline void aic_release_simq(struct aic_softc*); 223 224 static __inline void 225 aic_freeze_simq(struct aic_softc *aic) 226 { 227 xpt_freeze_simq(aic->platform_data->sim, /*count*/1); 228 } 229 230 static __inline void 231 aic_release_simq(struct aic_softc *aic) 232 { 233 xpt_release_simq(aic->platform_data->sim, /*run queue*/TRUE); 234 } 235 /********************************* Debug **************************************/ 236 static __inline void ahd_print_path(struct ahd_softc *, struct scb *); 237 static __inline void ahd_platform_dump_card_state(struct ahd_softc *ahd); 238 239 static __inline void 240 ahd_print_path(struct ahd_softc *ahd, struct scb *scb) 241 { 242 xpt_print_path(scb->io_ctx->ccb_h.path); 243 } 244 245 static __inline void 246 ahd_platform_dump_card_state(struct ahd_softc *ahd) 247 { 248 /* Nothing to do here for FreeBSD */ 249 } 250 /**************************** Transfer Settings *******************************/ 251 void ahd_notify_xfer_settings_change(struct ahd_softc *, 252 struct ahd_devinfo *); 253 void ahd_platform_set_tags(struct ahd_softc *, struct ahd_devinfo *, 254 int /*enable*/); 255 256 /************************* Initialization/Teardown ****************************/ 257 int ahd_platform_alloc(struct ahd_softc *ahd, void *platform_arg); 258 void ahd_platform_free(struct ahd_softc *ahd); 259 int ahd_map_int(struct ahd_softc *ahd); 260 int ahd_attach(struct ahd_softc *); 261 int ahd_softc_comp(struct ahd_softc *lahd, struct ahd_softc *rahd); 262 int ahd_detach(device_t); 263 #define ahd_platform_init(arg) 264 265 266 /****************************** Interrupts ************************************/ 267 void ahd_platform_intr(void *); 268 static __inline void ahd_platform_flushwork(struct ahd_softc *ahd); 269 static __inline void 270 ahd_platform_flushwork(struct ahd_softc *ahd) 271 { 272 } 273 274 /************************ Misc Function Declarations **************************/ 275 void ahd_done(struct ahd_softc *ahd, struct scb *scb); 276 void ahd_send_async(struct ahd_softc *, char /*channel*/, 277 u_int /*target*/, u_int /*lun*/, ac_code, void *arg); 278 #endif /* _AIC79XX_FREEBSD_H_ */ 279