Annotation of sys/dev/ic/aic7xxx_openbsd.h, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: aic7xxx_openbsd.h,v 1.18 2007/05/02 02:20:37 krw Exp $ */
! 2: /* $NetBSD: aic7xxx_osm.h,v 1.7 2003/11/02 11:07:44 wiz Exp $ */
! 3:
! 4: /*
! 5: * OpenBSD platform specific driver option settings, data structures,
! 6: * function declarations and includes.
! 7: *
! 8: * Copyright (c) 1994-2001 Justin T. Gibbs.
! 9: * Copyright (c) 2001-2002 Steve Murphree, Jr.
! 10: * All rights reserved.
! 11: *
! 12: * Redistribution and use in source and binary forms, with or without
! 13: * modification, are permitted provided that the following conditions
! 14: * are met:
! 15: * 1. Redistributions of source code must retain the above copyright
! 16: * notice, this list of conditions, and the following disclaimer,
! 17: * without modification.
! 18: * 2. The name of the author(s) may not be used to endorse or promote products
! 19: * derived from this software without specific prior written permission.
! 20: *
! 21: * Alternatively, this software may be distributed under the terms of the
! 22: * GNU Public License ("GPL").
! 23: *
! 24: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
! 25: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
! 26: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
! 27: * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
! 28: * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
! 29: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
! 30: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
! 31: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
! 32: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
! 33: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
! 34: * SUCH DAMAGE.
! 35: *
! 36: * //depot/aic7xxx/freebsd/dev/aic7xxx/aic7xxx_osm.h#14 $
! 37: *
! 38: * $FreeBSD: /repoman/r/ncvs/src/sys/dev/aic7xxx/aic7xxx_osm.h,v 1.20 2002/12/04 22:51:29 scottl Exp $
! 39: */
! 40: /*
! 41: * Ported from FreeBSD by Pascal Renauld, Network Storage Solutions, Inc. - April 2003
! 42: */
! 43:
! 44: #ifndef _AIC7XXX_OPENBSD_H_
! 45: #define _AIC7XXX_OPENBSD_H_
! 46:
! 47: #include "pci.h" /* for config options */
! 48:
! 49: #include <sys/param.h>
! 50: #include <sys/kernel.h>
! 51: #include <sys/systm.h>
! 52: #include <sys/device.h>
! 53: #include <sys/malloc.h>
! 54: #include <sys/buf.h>
! 55: #include <sys/proc.h>
! 56: #include <sys/queue.h>
! 57:
! 58: #include <dev/pci/pcireg.h>
! 59: #include <dev/pci/pcivar.h>
! 60:
! 61: #include <machine/bus.h>
! 62: #include <machine/intr.h>
! 63:
! 64: #include <scsi/scsi_all.h>
! 65: #include <scsi/scsi_message.h>
! 66: #include <scsi/scsi_debug.h>
! 67: #include <scsi/scsiconf.h>
! 68:
! 69: #include <uvm/uvm_extern.h>
! 70:
! 71: #ifdef CAM_NEW_TRAN_CODE
! 72: #define AHC_NEW_TRAN_SETTINGS
! 73: #endif /* CAM_NEW_TRAN_CODE */
! 74:
! 75: #if NPCI > 0
! 76: #define AHC_PCI_CONFIG 1
! 77: #endif
! 78:
! 79: #if 0
! 80: #define AHC_DEBUG AHC_SHOW_SENSE | AHC_SHOW_MISC | AHC_SHOW_CMDS
! 81: #endif
! 82:
! 83: #ifdef DEBUG
! 84: #define bootverbose 1
! 85: #else
! 86: #define bootverbose 0
! 87: #endif
! 88: /****************************** Platform Macros *******************************/
! 89:
! 90: #define SCSI_IS_SCSIBUS_B(ahc, sc_link) \
! 91: ((sc_link)->scsibus == (ahc)->sc_channel_b.scsibus)
! 92: #define SCSI_SCSI_ID(ahc, sc_link) \
! 93: (SCSI_IS_SCSIBUS_B(ahc, sc_link) ? ahc->our_id_b : ahc->our_id)
! 94: #define SCSI_CHANNEL(ahc, sc_link) \
! 95: (SCSI_IS_SCSIBUS_B(ahc, sc_link) ? 'B' : 'A')
! 96: #define BUILD_SCSIID(ahc, sc_link, target_id, our_id) \
! 97: ((((target_id) << TID_SHIFT) & TID) | (our_id) \
! 98: | (SCSI_IS_SCSIBUS_B(ahc, sc_link) ? TWIN_CHNLB : 0))
! 99:
! 100: #ifndef offsetof
! 101: #define offsetof(type, member) ((size_t)(&((type *)0)->member))
! 102: #endif
! 103: /************************* Forward Declarations *******************************/
! 104: typedef struct pci_attach_args * ahc_dev_softc_t;
! 105:
! 106: /***************************** Bus Space/DMA **********************************/
! 107:
! 108: /* XXX Need to update Bus DMA for partial map syncs */
! 109: #define ahc_dmamap_sync(ahc, dma_tag, dmamap, offset, len, op) \
! 110: bus_dmamap_sync(dma_tag, dmamap, offset, len, op)
! 111:
! 112: /************************ Tunable Driver Parameters **************************/
! 113: /*
! 114: * The number of DMA segments supported. The sequencer can handle any number
! 115: * of physically contiguous S/G entries. To reduce the driver's memory
! 116: * consumption, we limit the number supported to be sufficient to handle
! 117: * the largest mapping supported by the kernel, MAXPHYS. Assuming the
! 118: * transfer is as fragmented as possible and unaligned, this turns out to
! 119: * be the number of paged sized transfers in MAXPHYS plus an extra element
! 120: * to handle any unaligned residual. The sequencer fetches SG elements
! 121: * in cacheline sized chucks, so make the number per-transaction an even
! 122: * multiple of 16 which should align us on even the largest of cacheline
! 123: * boundaries.
! 124: */
! 125: #define AHC_NSEG (roundup(btoc(MAXPHYS) + 1, 16))
! 126:
! 127: /* This driver supports target mode */
! 128: //#define AHC_TARGET_MODE 1
! 129:
! 130: #include <dev/ic/aic7xxxvar.h>
! 131:
! 132: /************************** Softc/SCB Platform Data ***************************/
! 133: struct ahc_platform_data {
! 134: };
! 135:
! 136: struct scb_platform_data {
! 137: };
! 138:
! 139: /*
! 140: * Some ISA devices (e.g. on a VLB) can perform 32-bit DMA. This
! 141: * flag is passed to bus_dmamap_create() to indicate that fact.
! 142: */
! 143: #ifndef ISABUS_DMA_32BIT
! 144: #define ISABUS_DMA_32BIT BUS_DMA_BUS1
! 145: #endif
! 146:
! 147: /************************** Timer DataStructures ******************************/
! 148: typedef struct timeout ahc_timer_t;
! 149:
! 150: /***************************** Core Includes **********************************/
! 151: #if AHC_REG_PRETTY_PRINT
! 152: #define AIC_DEBUG_REGISTERS 1
! 153: #else
! 154: #define AIC_DEBUG_REGISTERS 0
! 155: #endif
! 156:
! 157: /***************************** Timer Facilities *******************************/
! 158: void ahc_timeout(void*);
! 159:
! 160: #define ahc_timer_init callout_init
! 161: #define ahc_timer_stop callout_stop
! 162:
! 163: static __inline void
! 164: ahc_timer_reset(ahc_timer_t *timer, u_int usec, ahc_callback_t *func, void *arg)
! 165: {
! 166: callout_reset(timer, (usec * hz)/1000000, func, arg);
! 167: }
! 168:
! 169: static __inline void
! 170: ahc_scb_timer_reset(struct scb *scb, u_int usec)
! 171: {
! 172: if (!(scb->xs->xs_control & XS_CTL_POLL)) {
! 173: callout_reset(&scb->xs->xs_callout,
! 174: (usec * hz)/1000000, ahc_timeout, scb);
! 175: }
! 176: }
! 177:
! 178: /*************************** Device Access ************************************/
! 179: #define ahc_inb(ahc, port) \
! 180: bus_space_read_1((ahc)->tag, (ahc)->bsh, port)
! 181:
! 182: #define ahc_outb(ahc, port, value) \
! 183: bus_space_write_1((ahc)->tag, (ahc)->bsh, port, value)
! 184:
! 185: #define ahc_outsb(ahc, port, valp, count) \
! 186: bus_space_write_multi_1((ahc)->tag, (ahc)->bsh, port, valp, count)
! 187:
! 188: #define ahc_insb(ahc, port, valp, count) \
! 189: bus_space_read_multi_1((ahc)->tag, (ahc)->bsh, port, valp, count)
! 190:
! 191: static __inline void ahc_flush_device_writes(struct ahc_softc *);
! 192:
! 193: static __inline void
! 194: ahc_flush_device_writes(struct ahc_softc *ahc)
! 195: {
! 196: /* XXX Is this sufficient for all architectures??? */
! 197: ahc_inb(ahc, INTSTAT);
! 198: }
! 199:
! 200: /**************************** Locking Primitives ******************************/
! 201:
! 202: /****************************** OS Primitives *********************************/
! 203:
! 204: /************************** Transaction Operations ****************************/
! 205: static __inline void ahc_set_transaction_status(struct scb *, uint32_t);
! 206: static __inline void ahc_set_scsi_status(struct scb *, uint32_t);
! 207: static __inline uint32_t ahc_get_transaction_status(struct scb *);
! 208: static __inline uint32_t ahc_get_scsi_status(struct scb *);
! 209: static __inline void ahc_set_transaction_tag(struct scb *, int, u_int);
! 210: static __inline u_long ahc_get_transfer_length(struct scb *);
! 211: static __inline int ahc_get_transfer_dir(struct scb *);
! 212: static __inline void ahc_set_residual(struct scb *, u_long);
! 213: static __inline void ahc_set_sense_residual(struct scb *, u_long);
! 214: static __inline u_long ahc_get_residual(struct scb *);
! 215: static __inline int ahc_perform_autosense(struct scb *);
! 216: static __inline uint32_t ahc_get_sense_bufsize(struct ahc_softc *,
! 217: struct scb *);
! 218: static __inline void ahc_freeze_scb(struct scb *);
! 219: static __inline void ahc_platform_freeze_devq(struct ahc_softc *, struct scb *);
! 220: static __inline int ahc_platform_abort_scbs(struct ahc_softc *, int, char,
! 221: int, u_int, role_t, uint32_t);
! 222:
! 223: static __inline
! 224: void ahc_set_transaction_status(struct scb *scb, uint32_t status)
! 225: {
! 226: scb->xs->error = status;
! 227: }
! 228:
! 229: static __inline
! 230: void ahc_set_scsi_status(struct scb *scb, uint32_t status)
! 231: {
! 232: scb->xs->status = status;
! 233: }
! 234:
! 235: static __inline
! 236: uint32_t ahc_get_transaction_status(struct scb *scb)
! 237: {
! 238: if (scb->xs->flags & ITSDONE)
! 239: return CAM_REQ_CMP;
! 240: else
! 241: return scb->xs->error;
! 242: }
! 243:
! 244: static __inline
! 245: uint32_t ahc_get_scsi_status(struct scb *scb)
! 246: {
! 247: return (scb->xs->status);
! 248: }
! 249:
! 250: static __inline
! 251: void ahc_set_transaction_tag(struct scb *scb, int enabled, u_int type)
! 252: {
! 253: }
! 254:
! 255: static __inline
! 256: u_long ahc_get_transfer_length(struct scb *scb)
! 257: {
! 258: return (scb->xs->datalen);
! 259: }
! 260:
! 261: static __inline
! 262: int ahc_get_transfer_dir(struct scb *scb)
! 263: {
! 264: return (scb->xs->flags & (SCSI_DATA_IN | SCSI_DATA_OUT));
! 265: }
! 266:
! 267: static __inline
! 268: void ahc_set_residual(struct scb *scb, u_long resid)
! 269: {
! 270: scb->xs->resid = resid;
! 271: }
! 272:
! 273: static __inline
! 274: void ahc_set_sense_residual(struct scb *scb, u_long resid)
! 275: {
! 276: scb->xs->resid = resid;
! 277: }
! 278:
! 279: static __inline
! 280: u_long ahc_get_residual(struct scb *scb)
! 281: {
! 282: return (scb->xs->resid);
! 283: }
! 284:
! 285: static __inline
! 286: int ahc_perform_autosense(struct scb *scb)
! 287: {
! 288: /* Return true for OpenBSD */
! 289: return (1);
! 290: }
! 291:
! 292: static __inline uint32_t
! 293: ahc_get_sense_bufsize(struct ahc_softc *ahc, struct scb *scb)
! 294: {
! 295: return (sizeof(struct scsi_sense_data));
! 296: }
! 297:
! 298: static __inline void
! 299: ahc_freeze_scb(struct scb *scb)
! 300: {
! 301: }
! 302:
! 303: static __inline void
! 304: ahc_platform_freeze_devq(struct ahc_softc *ahc, struct scb *scb)
! 305: {
! 306: }
! 307:
! 308: static __inline int
! 309: ahc_platform_abort_scbs(struct ahc_softc *ahc, int target,
! 310: char channel, int lun, u_int tag,
! 311: role_t role, uint32_t status)
! 312: {
! 313: return (0);
! 314: }
! 315:
! 316: static __inline void
! 317: ahc_platform_scb_free(struct ahc_softc *ahc, struct scb *scb)
! 318: {
! 319: int s;
! 320:
! 321: s = splbio();
! 322:
! 323: if ((ahc->flags & AHC_RESOURCE_SHORTAGE) != 0) {
! 324: ahc->flags &= ~AHC_RESOURCE_SHORTAGE;
! 325: }
! 326:
! 327: timeout_del(&scb->xs->stimeout);
! 328:
! 329: splx(s);
! 330: }
! 331:
! 332: /********************************** PCI ***************************************/
! 333: #ifdef AHC_PCI_CONFIG
! 334: static __inline uint32_t ahc_pci_read_config(ahc_dev_softc_t, int, int);
! 335: static __inline void ahc_pci_write_config(ahc_dev_softc_t, int, uint32_t,
! 336: int);
! 337: static __inline int ahc_get_pci_function(ahc_dev_softc_t);
! 338: static __inline int ahc_get_pci_slot(ahc_dev_softc_t);
! 339: static __inline int ahc_get_pci_bus(ahc_dev_softc_t);
! 340:
! 341: int ahc_pci_map_registers(struct ahc_softc *);
! 342: int ahc_pci_map_int(struct ahc_softc *);
! 343:
! 344: static __inline uint32_t
! 345: ahc_pci_read_config(ahc_dev_softc_t pci, int reg, int width)
! 346: {
! 347: return (pci_conf_read(pci->pa_pc, pci->pa_tag, reg));
! 348: }
! 349:
! 350: static __inline void
! 351: ahc_pci_write_config(ahc_dev_softc_t pci, int reg, uint32_t value, int width)
! 352: {
! 353: pci_conf_write(pci->pa_pc, pci->pa_tag, reg, value);
! 354: }
! 355:
! 356: static __inline int
! 357: ahc_get_pci_function(ahc_dev_softc_t pci)
! 358: {
! 359: return (pci->pa_function);
! 360: }
! 361:
! 362: static __inline int
! 363: ahc_get_pci_slot(ahc_dev_softc_t pci)
! 364: {
! 365: return (pci->pa_device);
! 366: }
! 367:
! 368: static __inline int
! 369: ahc_get_pci_bus(ahc_dev_softc_t pci)
! 370: {
! 371: return (pci->pa_bus);
! 372: }
! 373:
! 374: typedef enum
! 375: {
! 376: AHC_POWER_STATE_D0,
! 377: AHC_POWER_STATE_D1,
! 378: AHC_POWER_STATE_D2,
! 379: AHC_POWER_STATE_D3
! 380: } ahc_power_state;
! 381:
! 382: void ahc_power_state_change(struct ahc_softc *, ahc_power_state);
! 383: #endif
! 384: /******************************** VL/EISA *************************************/
! 385: int aic7770_map_registers(struct ahc_softc *, u_int);
! 386: int aic7770_map_int(struct ahc_softc *, int);
! 387:
! 388: /********************************* Debug **************************************/
! 389: static __inline void ahc_print_path(struct ahc_softc *, struct scb *);
! 390: static __inline void ahc_platform_dump_card_state(struct ahc_softc *);
! 391:
! 392: static __inline void
! 393: ahc_print_path(struct ahc_softc *ahc, struct scb *scb)
! 394: {
! 395: sc_print_addr(scb->xs->sc_link);
! 396: }
! 397:
! 398: static __inline void
! 399: ahc_platform_dump_card_state(struct ahc_softc *ahc)
! 400: {
! 401: /* Nothing to do here for OpenBSD */
! 402: printf("FEATURES = 0x%x, FLAGS = 0x%x, CHIP = 0x%x BUGS =0x%x\n",
! 403: ahc->features, ahc->flags, ahc->chip, ahc->bugs);
! 404: }
! 405: /**************************** Transfer Settings *******************************/
! 406: void ahc_notify_xfer_settings_change(struct ahc_softc *,
! 407: struct ahc_devinfo *);
! 408: void ahc_platform_set_tags(struct ahc_softc *, struct ahc_devinfo *, int);
! 409:
! 410: /************************* Initialization/Teardown ****************************/
! 411: int ahc_platform_alloc(struct ahc_softc *, void *);
! 412: void ahc_platform_free(struct ahc_softc *);
! 413: int ahc_map_int(struct ahc_softc *);
! 414: int ahc_attach(struct ahc_softc *);
! 415: int ahc_softc_comp(struct ahc_softc *, struct ahc_softc *);
! 416: int ahc_detach(struct device *, int);
! 417:
! 418: /****************************** Interrupts ************************************/
! 419: int ahc_platform_intr(void *);
! 420: static __inline void ahc_platform_flushwork(struct ahc_softc *);
! 421: static __inline void
! 422: ahc_platform_flushwork(struct ahc_softc *ahc)
! 423: {
! 424: }
! 425:
! 426: /************************ Misc Function Declarations **************************/
! 427: void ahc_done(struct ahc_softc *, struct scb *);
! 428: void ahc_send_async(struct ahc_softc *, char, u_int, u_int, ac_code,
! 429: void *);
! 430:
! 431: #endif /* _AIC7XXX_OPENBSD_H_ */
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