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1// SPDX-License-Identifier: GPL-2.0-or-later2/*3 * NinjaSCSI-32Bi Cardbus, NinjaSCSI-32UDE PCI/CardBus SCSI driver4 * Copyright (C) 2001, 2002, 20035 * YOKOTA Hiroshi <yokota@netlab.is.tsukuba.ac.jp>6 * GOTO Masanori <gotom@debian.or.jp>, <gotom@debian.org>7 *8 * Revision History:9 * 1.0: Initial Release.10 * 1.1: Add /proc SDTR status.11 * Remove obsolete error handler nsp32_reset.12 * Some clean up.13 * 1.2: PowerPC (big endian) support.14 */15 16#include <linux/module.h>17#include <linux/init.h>18#include <linux/kernel.h>19#include <linux/string.h>20#include <linux/timer.h>21#include <linux/ioport.h>22#include <linux/major.h>23#include <linux/blkdev.h>24#include <linux/interrupt.h>25#include <linux/pci.h>26#include <linux/delay.h>27#include <linux/ctype.h>28#include <linux/dma-mapping.h>29 30#include <asm/dma.h>31#include <asm/io.h>32 33#include <scsi/scsi.h>34#include <scsi/scsi_cmnd.h>35#include <scsi/scsi_device.h>36#include <scsi/scsi_host.h>37#include <scsi/scsi_ioctl.h>38 39#include "nsp32.h"40 41 42/***********************************************************************43 * Module parameters44 */45static int trans_mode = 0; /* default: BIOS */46module_param (trans_mode, int, 0);47MODULE_PARM_DESC(trans_mode, "transfer mode (0: BIOS(default) 1: Async 2: Ultra20M");48#define ASYNC_MODE 149#define ULTRA20M_MODE 250 51static bool auto_param = 0; /* default: ON */52module_param (auto_param, bool, 0);53MODULE_PARM_DESC(auto_param, "AutoParameter mode (0: ON(default) 1: OFF)");54 55static bool disc_priv = 1; /* default: OFF */56module_param (disc_priv, bool, 0);57MODULE_PARM_DESC(disc_priv, "disconnection privilege mode (0: ON 1: OFF(default))");58 59MODULE_AUTHOR("YOKOTA Hiroshi <yokota@netlab.is.tsukuba.ac.jp>, GOTO Masanori <gotom@debian.or.jp>");60MODULE_DESCRIPTION("Workbit NinjaSCSI-32Bi/UDE CardBus/PCI SCSI host bus adapter module");61MODULE_LICENSE("GPL");62 63static const char *nsp32_release_version = "1.2";64 65 66/****************************************************************************67 * Supported hardware68 */69static struct pci_device_id nsp32_pci_table[] = {70 {71 .vendor = PCI_VENDOR_ID_IODATA,72 .device = PCI_DEVICE_ID_NINJASCSI_32BI_CBSC_II,73 .subvendor = PCI_ANY_ID,74 .subdevice = PCI_ANY_ID,75 .driver_data = MODEL_IODATA,76 },77 {78 .vendor = PCI_VENDOR_ID_WORKBIT,79 .device = PCI_DEVICE_ID_NINJASCSI_32BI_KME,80 .subvendor = PCI_ANY_ID,81 .subdevice = PCI_ANY_ID,82 .driver_data = MODEL_KME,83 },84 {85 .vendor = PCI_VENDOR_ID_WORKBIT,86 .device = PCI_DEVICE_ID_NINJASCSI_32BI_WBT,87 .subvendor = PCI_ANY_ID,88 .subdevice = PCI_ANY_ID,89 .driver_data = MODEL_WORKBIT,90 },91 {92 .vendor = PCI_VENDOR_ID_WORKBIT,93 .device = PCI_DEVICE_ID_WORKBIT_STANDARD,94 .subvendor = PCI_ANY_ID,95 .subdevice = PCI_ANY_ID,96 .driver_data = MODEL_PCI_WORKBIT,97 },98 {99 .vendor = PCI_VENDOR_ID_WORKBIT,100 .device = PCI_DEVICE_ID_NINJASCSI_32BI_LOGITEC,101 .subvendor = PCI_ANY_ID,102 .subdevice = PCI_ANY_ID,103 .driver_data = MODEL_LOGITEC,104 },105 {106 .vendor = PCI_VENDOR_ID_WORKBIT,107 .device = PCI_DEVICE_ID_NINJASCSI_32BIB_LOGITEC,108 .subvendor = PCI_ANY_ID,109 .subdevice = PCI_ANY_ID,110 .driver_data = MODEL_PCI_LOGITEC,111 },112 {113 .vendor = PCI_VENDOR_ID_WORKBIT,114 .device = PCI_DEVICE_ID_NINJASCSI_32UDE_MELCO,115 .subvendor = PCI_ANY_ID,116 .subdevice = PCI_ANY_ID,117 .driver_data = MODEL_PCI_MELCO,118 },119 {120 .vendor = PCI_VENDOR_ID_WORKBIT,121 .device = PCI_DEVICE_ID_NINJASCSI_32UDE_MELCO_II,122 .subvendor = PCI_ANY_ID,123 .subdevice = PCI_ANY_ID,124 .driver_data = MODEL_PCI_MELCO,125 },126 {0,0,},127};128MODULE_DEVICE_TABLE(pci, nsp32_pci_table);129 130static nsp32_hw_data nsp32_data_base; /* probe <-> detect glue */131 132 133/*134 * Period/AckWidth speed conversion table135 *136 * Note: This period/ackwidth speed table must be in descending order.137 */138static nsp32_sync_table nsp32_sync_table_40M[] = {139 /* {PNo, AW, SP, EP, SREQ smpl} Speed(MB/s) Period AckWidth */140 {0x1, 0, 0x0c, 0x0c, SMPL_40M}, /* 20.0 : 50ns, 25ns */141 {0x2, 0, 0x0d, 0x18, SMPL_40M}, /* 13.3 : 75ns, 25ns */142 {0x3, 1, 0x19, 0x19, SMPL_40M}, /* 10.0 : 100ns, 50ns */143 {0x4, 1, 0x1a, 0x1f, SMPL_20M}, /* 8.0 : 125ns, 50ns */144 {0x5, 2, 0x20, 0x25, SMPL_20M}, /* 6.7 : 150ns, 75ns */145 {0x6, 2, 0x26, 0x31, SMPL_20M}, /* 5.7 : 175ns, 75ns */146 {0x7, 3, 0x32, 0x32, SMPL_20M}, /* 5.0 : 200ns, 100ns */147 {0x8, 3, 0x33, 0x38, SMPL_10M}, /* 4.4 : 225ns, 100ns */148 {0x9, 3, 0x39, 0x3e, SMPL_10M}, /* 4.0 : 250ns, 100ns */149};150 151static nsp32_sync_table nsp32_sync_table_20M[] = {152 {0x1, 0, 0x19, 0x19, SMPL_40M}, /* 10.0 : 100ns, 50ns */153 {0x2, 0, 0x1a, 0x25, SMPL_20M}, /* 6.7 : 150ns, 50ns */154 {0x3, 1, 0x26, 0x32, SMPL_20M}, /* 5.0 : 200ns, 100ns */155 {0x4, 1, 0x33, 0x3e, SMPL_10M}, /* 4.0 : 250ns, 100ns */156 {0x5, 2, 0x3f, 0x4b, SMPL_10M}, /* 3.3 : 300ns, 150ns */157 {0x6, 2, 0x4c, 0x57, SMPL_10M}, /* 2.8 : 350ns, 150ns */158 {0x7, 3, 0x58, 0x64, SMPL_10M}, /* 2.5 : 400ns, 200ns */159 {0x8, 3, 0x65, 0x70, SMPL_10M}, /* 2.2 : 450ns, 200ns */160 {0x9, 3, 0x71, 0x7d, SMPL_10M}, /* 2.0 : 500ns, 200ns */161};162 163static nsp32_sync_table nsp32_sync_table_pci[] = {164 {0x1, 0, 0x0c, 0x0f, SMPL_40M}, /* 16.6 : 60ns, 30ns */165 {0x2, 0, 0x10, 0x16, SMPL_40M}, /* 11.1 : 90ns, 30ns */166 {0x3, 1, 0x17, 0x1e, SMPL_20M}, /* 8.3 : 120ns, 60ns */167 {0x4, 1, 0x1f, 0x25, SMPL_20M}, /* 6.7 : 150ns, 60ns */168 {0x5, 2, 0x26, 0x2d, SMPL_20M}, /* 5.6 : 180ns, 90ns */169 {0x6, 2, 0x2e, 0x34, SMPL_10M}, /* 4.8 : 210ns, 90ns */170 {0x7, 3, 0x35, 0x3c, SMPL_10M}, /* 4.2 : 240ns, 120ns */171 {0x8, 3, 0x3d, 0x43, SMPL_10M}, /* 3.7 : 270ns, 120ns */172 {0x9, 3, 0x44, 0x4b, SMPL_10M}, /* 3.3 : 300ns, 120ns */173};174 175/*176 * function declaration177 */178/* module entry point */179static int nsp32_probe (struct pci_dev *, const struct pci_device_id *);180static void nsp32_remove(struct pci_dev *);181static int __init init_nsp32 (void);182static void __exit exit_nsp32 (void);183 184/* struct struct scsi_host_template */185static int nsp32_show_info (struct seq_file *, struct Scsi_Host *);186 187static int nsp32_detect (struct pci_dev *pdev);188static int nsp32_queuecommand(struct Scsi_Host *, struct scsi_cmnd *);189static const char *nsp32_info (struct Scsi_Host *);190static int nsp32_release (struct Scsi_Host *);191 192/* SCSI error handler */193static int nsp32_eh_abort (struct scsi_cmnd *);194static int nsp32_eh_host_reset(struct scsi_cmnd *);195 196/* generate SCSI message */197static void nsp32_build_identify(struct scsi_cmnd *);198static void nsp32_build_nop (struct scsi_cmnd *);199static void nsp32_build_reject (struct scsi_cmnd *);200static void nsp32_build_sdtr (struct scsi_cmnd *, unsigned char,201 unsigned char);202 203/* SCSI message handler */204static int nsp32_busfree_occur(struct scsi_cmnd *, unsigned short);205static void nsp32_msgout_occur (struct scsi_cmnd *);206static void nsp32_msgin_occur (struct scsi_cmnd *, unsigned long,207 unsigned short);208 209static int nsp32_setup_sg_table (struct scsi_cmnd *);210static int nsp32_selection_autopara(struct scsi_cmnd *);211static int nsp32_selection_autoscsi(struct scsi_cmnd *);212static void nsp32_scsi_done (struct scsi_cmnd *);213static int nsp32_arbitration (struct scsi_cmnd *, unsigned int);214static int nsp32_reselection (struct scsi_cmnd *, unsigned char);215static void nsp32_adjust_busfree (struct scsi_cmnd *, unsigned int);216static void nsp32_restart_autoscsi (struct scsi_cmnd *, unsigned short);217 218/* SCSI SDTR */219static void nsp32_analyze_sdtr (struct scsi_cmnd *);220static int nsp32_search_period_entry(nsp32_hw_data *, nsp32_target *,221 unsigned char);222static void nsp32_set_async (nsp32_hw_data *, nsp32_target *);223static void nsp32_set_max_sync (nsp32_hw_data *, nsp32_target *,224 unsigned char *, unsigned char *);225static void nsp32_set_sync_entry (nsp32_hw_data *, nsp32_target *,226 int, unsigned char);227 228/* SCSI bus status handler */229static void nsp32_wait_req (nsp32_hw_data *, int);230static void nsp32_wait_sack (nsp32_hw_data *, int);231static void nsp32_sack_assert (nsp32_hw_data *);232static void nsp32_sack_negate (nsp32_hw_data *);233static void nsp32_do_bus_reset(nsp32_hw_data *);234 235/* hardware interrupt handler */236static irqreturn_t do_nsp32_isr(int, void *);237 238/* initialize hardware */239static int nsp32hw_init(nsp32_hw_data *);240 241/* EEPROM handler */242static int nsp32_getprom_param (nsp32_hw_data *);243static int nsp32_getprom_at24 (nsp32_hw_data *);244static int nsp32_getprom_c16 (nsp32_hw_data *);245static void nsp32_prom_start (nsp32_hw_data *);246static void nsp32_prom_stop (nsp32_hw_data *);247static int nsp32_prom_read (nsp32_hw_data *, int);248static int nsp32_prom_read_bit (nsp32_hw_data *);249static void nsp32_prom_write_bit(nsp32_hw_data *, int);250static void nsp32_prom_set (nsp32_hw_data *, int, int);251static int nsp32_prom_get (nsp32_hw_data *, int);252 253/* debug/warning/info message */254static void nsp32_message (const char *, int, char *, char *, ...);255#ifdef NSP32_DEBUG256static void nsp32_dmessage(const char *, int, int, char *, ...);257#endif258 259/*260 * max_sectors is currently limited up to 128.261 */262static const struct scsi_host_template nsp32_template = {263 .proc_name = "nsp32",264 .name = "Workbit NinjaSCSI-32Bi/UDE",265 .show_info = nsp32_show_info,266 .info = nsp32_info,267 .queuecommand = nsp32_queuecommand,268 .can_queue = 1,269 .sg_tablesize = NSP32_SG_SIZE,270 .max_sectors = 128,271 .this_id = NSP32_HOST_SCSIID,272 .dma_boundary = PAGE_SIZE - 1,273 .eh_abort_handler = nsp32_eh_abort,274 .eh_host_reset_handler = nsp32_eh_host_reset,275/* .highmem_io = 1, */276 .cmd_size = sizeof(struct nsp32_cmd_priv),277};278 279#include "nsp32_io.h"280 281/***********************************************************************282 * debug, error print283 */284#ifndef NSP32_DEBUG285# define NSP32_DEBUG_MASK 0x000000286# define nsp32_msg(type, args...) nsp32_message ("", 0, (type), args)287# define nsp32_dbg(mask, args...) /* */288#else289# define NSP32_DEBUG_MASK 0xffffff290# define nsp32_msg(type, args...) \291 nsp32_message (__func__, __LINE__, (type), args)292# define nsp32_dbg(mask, args...) \293 nsp32_dmessage(__func__, __LINE__, (mask), args)294#endif295 296#define NSP32_DEBUG_QUEUECOMMAND BIT(0)297#define NSP32_DEBUG_REGISTER BIT(1)298#define NSP32_DEBUG_AUTOSCSI BIT(2)299#define NSP32_DEBUG_INTR BIT(3)300#define NSP32_DEBUG_SGLIST BIT(4)301#define NSP32_DEBUG_BUSFREE BIT(5)302#define NSP32_DEBUG_CDB_CONTENTS BIT(6)303#define NSP32_DEBUG_RESELECTION BIT(7)304#define NSP32_DEBUG_MSGINOCCUR BIT(8)305#define NSP32_DEBUG_EEPROM BIT(9)306#define NSP32_DEBUG_MSGOUTOCCUR BIT(10)307#define NSP32_DEBUG_BUSRESET BIT(11)308#define NSP32_DEBUG_RESTART BIT(12)309#define NSP32_DEBUG_SYNC BIT(13)310#define NSP32_DEBUG_WAIT BIT(14)311#define NSP32_DEBUG_TARGETFLAG BIT(15)312#define NSP32_DEBUG_PROC BIT(16)313#define NSP32_DEBUG_INIT BIT(17)314#define NSP32_SPECIAL_PRINT_REGISTER BIT(20)315 316#define NSP32_DEBUG_BUF_LEN 100317 318__printf(4, 5)319static void nsp32_message(const char *func, int line, char *type, char *fmt, ...)320{321 va_list args;322 char buf[NSP32_DEBUG_BUF_LEN];323 324 va_start(args, fmt);325 vsnprintf(buf, sizeof(buf), fmt, args);326 va_end(args);327 328#ifndef NSP32_DEBUG329 printk("%snsp32: %s\n", type, buf);330#else331 printk("%snsp32: %s (%d): %s\n", type, func, line, buf);332#endif333}334 335#ifdef NSP32_DEBUG336static void nsp32_dmessage(const char *func, int line, int mask, char *fmt, ...)337{338 va_list args;339 char buf[NSP32_DEBUG_BUF_LEN];340 341 va_start(args, fmt);342 vsnprintf(buf, sizeof(buf), fmt, args);343 va_end(args);344 345 if (mask & NSP32_DEBUG_MASK) {346 printk("nsp32-debug: 0x%x %s (%d): %s\n", mask, func, line, buf);347 }348}349#endif350 351#ifdef NSP32_DEBUG352# include "nsp32_debug.c"353#else354# define show_command(arg) /* */355# define show_busphase(arg) /* */356# define show_autophase(arg) /* */357#endif358 359/*360 * IDENTIFY Message361 */362static void nsp32_build_identify(struct scsi_cmnd *SCpnt)363{364 nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata;365 int pos = data->msgout_len;366 int mode = FALSE;367 368 /* XXX: Auto DiscPriv detection is progressing... */369 if (disc_priv == 0) {370 /* mode = TRUE; */371 }372 373 data->msgoutbuf[pos] = IDENTIFY(mode, SCpnt->device->lun); pos++;374 375 data->msgout_len = pos;376}377 378/*379 * SDTR Message Routine380 */381static void nsp32_build_sdtr(struct scsi_cmnd *SCpnt,382 unsigned char period,383 unsigned char offset)384{385 nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata;386 int pos = data->msgout_len;387 388 data->msgoutbuf[pos] = EXTENDED_MESSAGE; pos++;389 data->msgoutbuf[pos] = EXTENDED_SDTR_LEN; pos++;390 data->msgoutbuf[pos] = EXTENDED_SDTR; pos++;391 data->msgoutbuf[pos] = period; pos++;392 data->msgoutbuf[pos] = offset; pos++;393 394 data->msgout_len = pos;395}396 397/*398 * No Operation Message399 */400static void nsp32_build_nop(struct scsi_cmnd *SCpnt)401{402 nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata;403 int pos = data->msgout_len;404 405 if (pos != 0) {406 nsp32_msg(KERN_WARNING,407 "Some messages are already contained!");408 return;409 }410 411 data->msgoutbuf[pos] = NOP; pos++;412 data->msgout_len = pos;413}414 415/*416 * Reject Message417 */418static void nsp32_build_reject(struct scsi_cmnd *SCpnt)419{420 nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata;421 int pos = data->msgout_len;422 423 data->msgoutbuf[pos] = MESSAGE_REJECT; pos++;424 data->msgout_len = pos;425}426 427/*428 * timer429 */430#if 0431static void nsp32_start_timer(struct scsi_cmnd *SCpnt, int time)432{433 unsigned int base = SCpnt->host->io_port;434 435 nsp32_dbg(NSP32_DEBUG_INTR, "timer=%d", time);436 437 if (time & (~TIMER_CNT_MASK)) {438 nsp32_dbg(NSP32_DEBUG_INTR, "timer set overflow");439 }440 441 nsp32_write2(base, TIMER_SET, time & TIMER_CNT_MASK);442}443#endif444 445 446/*447 * set SCSI command and other parameter to asic, and start selection phase448 */449static int nsp32_selection_autopara(struct scsi_cmnd *SCpnt)450{451 nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata;452 unsigned int base = SCpnt->device->host->io_port;453 unsigned int host_id = SCpnt->device->host->this_id;454 unsigned char target = scmd_id(SCpnt);455 nsp32_autoparam *param = data->autoparam;456 unsigned char phase;457 int i, ret;458 unsigned int msgout;459 u16_le s;460 461 nsp32_dbg(NSP32_DEBUG_AUTOSCSI, "in");462 463 /*464 * check bus free465 */466 phase = nsp32_read1(base, SCSI_BUS_MONITOR);467 if (phase != BUSMON_BUS_FREE) {468 nsp32_msg(KERN_WARNING, "bus busy");469 show_busphase(phase & BUSMON_PHASE_MASK);470 SCpnt->result = DID_BUS_BUSY << 16;471 return FALSE;472 }473 474 /*475 * message out476 *477 * Note: If the range of msgout_len is 1 - 3, fill scsi_msgout.478 * over 3 messages needs another routine.479 */480 if (data->msgout_len == 0) {481 nsp32_msg(KERN_ERR, "SCSI MsgOut without any message!");482 SCpnt->result = DID_ERROR << 16;483 return FALSE;484 } else if (data->msgout_len > 0 && data->msgout_len <= 3) {485 msgout = 0;486 for (i = 0; i < data->msgout_len; i++) {487 /*488 * the sending order of the message is:489 * MCNT 3: MSG#0 -> MSG#1 -> MSG#2490 * MCNT 2: MSG#1 -> MSG#2491 * MCNT 1: MSG#2492 */493 msgout >>= 8;494 msgout |= ((unsigned int)(data->msgoutbuf[i]) << 24);495 }496 msgout |= MV_VALID; /* MV valid */497 msgout |= (unsigned int)data->msgout_len; /* len */498 } else {499 /* data->msgout_len > 3 */500 msgout = 0;501 }502 503 // nsp_dbg(NSP32_DEBUG_AUTOSCSI, "sel time out=0x%x\n",504 // nsp32_read2(base, SEL_TIME_OUT));505 // nsp32_write2(base, SEL_TIME_OUT, SEL_TIMEOUT_TIME);506 507 /*508 * setup asic parameter509 */510 memset(param, 0, sizeof(nsp32_autoparam));511 512 /* cdb */513 for (i = 0; i < SCpnt->cmd_len; i++) {514 param->cdb[4 * i] = SCpnt->cmnd[i];515 }516 517 /* outgoing messages */518 param->msgout = cpu_to_le32(msgout);519 520 /* syncreg, ackwidth, target id, SREQ sampling rate */521 param->syncreg = data->cur_target->syncreg;522 param->ackwidth = data->cur_target->ackwidth;523 param->target_id = BIT(host_id) | BIT(target);524 param->sample_reg = data->cur_target->sample_reg;525 526 // nsp32_dbg(NSP32_DEBUG_AUTOSCSI, "sample rate=0x%x\n", data->cur_target->sample_reg);527 528 /* command control */529 param->command_control = cpu_to_le16(CLEAR_CDB_FIFO_POINTER |530 AUTOSCSI_START |531 AUTO_MSGIN_00_OR_04 |532 AUTO_MSGIN_02 |533 AUTO_ATN );534 535 536 /* transfer control */537 s = 0;538 switch (data->trans_method) {539 case NSP32_TRANSFER_BUSMASTER:540 s |= BM_START;541 break;542 case NSP32_TRANSFER_MMIO:543 s |= CB_MMIO_MODE;544 break;545 case NSP32_TRANSFER_PIO:546 s |= CB_IO_MODE;547 break;548 default:549 nsp32_msg(KERN_ERR, "unknown trans_method");550 break;551 }552 /*553 * OR-ed BLIEND_MODE, FIFO intr is decreased, instead of PCI bus waits.554 * For bus master transfer, it's taken off.555 */556 s |= (TRANSFER_GO | ALL_COUNTER_CLR);557 param->transfer_control = cpu_to_le16(s);558 559 /* sg table addr */560 param->sgt_pointer = cpu_to_le32(data->cur_lunt->sglun_paddr);561 562 /*563 * transfer parameter to ASIC564 */565 nsp32_write4(base, SGT_ADR, data->auto_paddr);566 nsp32_write2(base, COMMAND_CONTROL,567 CLEAR_CDB_FIFO_POINTER | AUTO_PARAMETER );568 569 /*570 * Check arbitration571 */572 ret = nsp32_arbitration(SCpnt, base);573 574 return ret;575}576 577 578/*579 * Selection with AUTO SCSI (without AUTO PARAMETER)580 */581static int nsp32_selection_autoscsi(struct scsi_cmnd *SCpnt)582{583 nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata;584 unsigned int base = SCpnt->device->host->io_port;585 unsigned int host_id = SCpnt->device->host->this_id;586 unsigned char target = scmd_id(SCpnt);587 unsigned char phase;588 int status;589 unsigned short command = 0;590 unsigned int msgout = 0;591 int i;592 593 nsp32_dbg(NSP32_DEBUG_AUTOSCSI, "in");594 595 /*596 * IRQ disable597 */598 nsp32_write2(base, IRQ_CONTROL, IRQ_CONTROL_ALL_IRQ_MASK);599 600 /*601 * check bus line602 */603 phase = nsp32_read1(base, SCSI_BUS_MONITOR);604 if ((phase & BUSMON_BSY) || (phase & BUSMON_SEL)) {605 nsp32_msg(KERN_WARNING, "bus busy");606 SCpnt->result = DID_BUS_BUSY << 16;607 status = 1;608 goto out;609 }610 611 /*612 * clear execph613 */614 nsp32_read2(base, SCSI_EXECUTE_PHASE);615 616 /*617 * clear FIFO counter to set CDBs618 */619 nsp32_write2(base, COMMAND_CONTROL, CLEAR_CDB_FIFO_POINTER);620 621 /*622 * set CDB0 - CDB15623 */624 for (i = 0; i < SCpnt->cmd_len; i++) {625 nsp32_write1(base, COMMAND_DATA, SCpnt->cmnd[i]);626 }627 nsp32_dbg(NSP32_DEBUG_CDB_CONTENTS, "CDB[0]=[0x%x]", SCpnt->cmnd[0]);628 629 /*630 * set SCSIOUT LATCH(initiator)/TARGET(target) (OR-ed) ID631 */632 nsp32_write1(base, SCSI_OUT_LATCH_TARGET_ID,633 BIT(host_id) | BIT(target));634 635 /*636 * set SCSI MSGOUT REG637 *638 * Note: If the range of msgout_len is 1 - 3, fill scsi_msgout.639 * over 3 messages needs another routine.640 */641 if (data->msgout_len == 0) {642 nsp32_msg(KERN_ERR, "SCSI MsgOut without any message!");643 SCpnt->result = DID_ERROR << 16;644 status = 1;645 goto out;646 } else if (data->msgout_len > 0 && data->msgout_len <= 3) {647 msgout = 0;648 for (i = 0; i < data->msgout_len; i++) {649 /*650 * the sending order of the message is:651 * MCNT 3: MSG#0 -> MSG#1 -> MSG#2652 * MCNT 2: MSG#1 -> MSG#2653 * MCNT 1: MSG#2654 */655 msgout >>= 8;656 msgout |= ((unsigned int)(data->msgoutbuf[i]) << 24);657 }658 msgout |= MV_VALID; /* MV valid */659 msgout |= (unsigned int)data->msgout_len; /* len */660 nsp32_write4(base, SCSI_MSG_OUT, msgout);661 } else {662 /* data->msgout_len > 3 */663 nsp32_write4(base, SCSI_MSG_OUT, 0);664 }665 666 /*667 * set selection timeout(= 250ms)668 */669 nsp32_write2(base, SEL_TIME_OUT, SEL_TIMEOUT_TIME);670 671 /*672 * set SREQ hazard killer sampling rate673 *674 * TODO: sample_rate (BASE+0F) is 0 when internal clock = 40MHz.675 * check other internal clock!676 */677 nsp32_write1(base, SREQ_SMPL_RATE, data->cur_target->sample_reg);678 679 /*680 * clear Arbit681 */682 nsp32_write1(base, SET_ARBIT, ARBIT_CLEAR);683 684 /*685 * set SYNCREG686 * Don't set BM_START_ADR before setting this register.687 */688 nsp32_write1(base, SYNC_REG, data->cur_target->syncreg);689 690 /*691 * set ACKWIDTH692 */693 nsp32_write1(base, ACK_WIDTH, data->cur_target->ackwidth);694 695 nsp32_dbg(NSP32_DEBUG_AUTOSCSI,696 "syncreg=0x%x, ackwidth=0x%x, sgtpaddr=0x%x, id=0x%x",697 nsp32_read1(base, SYNC_REG), nsp32_read1(base, ACK_WIDTH),698 nsp32_read4(base, SGT_ADR),699 nsp32_read1(base, SCSI_OUT_LATCH_TARGET_ID));700 nsp32_dbg(NSP32_DEBUG_AUTOSCSI, "msgout_len=%d, msgout=0x%x",701 data->msgout_len, msgout);702 703 /*704 * set SGT ADDR (physical address)705 */706 nsp32_write4(base, SGT_ADR, data->cur_lunt->sglun_paddr);707 708 /*709 * set TRANSFER CONTROL REG710 */711 command = 0;712 command |= (TRANSFER_GO | ALL_COUNTER_CLR);713 if (data->trans_method & NSP32_TRANSFER_BUSMASTER) {714 if (scsi_bufflen(SCpnt) > 0) {715 command |= BM_START;716 }717 } else if (data->trans_method & NSP32_TRANSFER_MMIO) {718 command |= CB_MMIO_MODE;719 } else if (data->trans_method & NSP32_TRANSFER_PIO) {720 command |= CB_IO_MODE;721 }722 nsp32_write2(base, TRANSFER_CONTROL, command);723 724 /*725 * start AUTO SCSI, kick off arbitration726 */727 command = (CLEAR_CDB_FIFO_POINTER |728 AUTOSCSI_START |729 AUTO_MSGIN_00_OR_04 |730 AUTO_MSGIN_02 |731 AUTO_ATN);732 nsp32_write2(base, COMMAND_CONTROL, command);733 734 /*735 * Check arbitration736 */737 status = nsp32_arbitration(SCpnt, base);738 739 out:740 /*741 * IRQ enable742 */743 nsp32_write2(base, IRQ_CONTROL, 0);744 745 return status;746}747 748 749/*750 * Arbitration Status Check751 *752 * Note: Arbitration counter is waited during ARBIT_GO is not lifting.753 * Using udelay(1) consumes CPU time and system time, but754 * arbitration delay time is defined minimal 2.4us in SCSI755 * specification, thus udelay works as coarse grained wait timer.756 */757static int nsp32_arbitration(struct scsi_cmnd *SCpnt, unsigned int base)758{759 unsigned char arbit;760 int status = TRUE;761 int time = 0;762 763 do {764 arbit = nsp32_read1(base, ARBIT_STATUS);765 time++;766 } while ((arbit & (ARBIT_WIN | ARBIT_FAIL)) == 0 &&767 (time <= ARBIT_TIMEOUT_TIME));768 769 nsp32_dbg(NSP32_DEBUG_AUTOSCSI,770 "arbit: 0x%x, delay time: %d", arbit, time);771 772 if (arbit & ARBIT_WIN) {773 /* Arbitration succeeded */774 SCpnt->result = DID_OK << 16;775 nsp32_index_write1(base, EXT_PORT, LED_ON); /* PCI LED on */776 } else if (arbit & ARBIT_FAIL) {777 /* Arbitration failed */778 SCpnt->result = DID_BUS_BUSY << 16;779 status = FALSE;780 } else {781 /*782 * unknown error or ARBIT_GO timeout,783 * something lock up! guess no connection.784 */785 nsp32_dbg(NSP32_DEBUG_AUTOSCSI, "arbit timeout");786 SCpnt->result = DID_NO_CONNECT << 16;787 status = FALSE;788 }789 790 /*791 * clear Arbit792 */793 nsp32_write1(base, SET_ARBIT, ARBIT_CLEAR);794 795 return status;796}797 798 799/*800 * reselection801 *802 * Note: This reselection routine is called from msgin_occur,803 * reselection target id&lun must be already set.804 * SCSI-2 says IDENTIFY implies RESTORE_POINTER operation.805 */806static int nsp32_reselection(struct scsi_cmnd *SCpnt, unsigned char newlun)807{808 nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata;809 unsigned int host_id = SCpnt->device->host->this_id;810 unsigned int base = SCpnt->device->host->io_port;811 unsigned char tmpid, newid;812 813 nsp32_dbg(NSP32_DEBUG_RESELECTION, "enter");814 815 /*816 * calculate reselected SCSI ID817 */818 tmpid = nsp32_read1(base, RESELECT_ID);819 tmpid &= (~BIT(host_id));820 newid = 0;821 while (tmpid) {822 if (tmpid & 1) {823 break;824 }825 tmpid >>= 1;826 newid++;827 }828 829 /*830 * If reselected New ID:LUN is not existed831 * or current nexus is not existed, unexpected832 * reselection is occurred. Send reject message.833 */834 if (newid >= ARRAY_SIZE(data->lunt) ||835 newlun >= ARRAY_SIZE(data->lunt[0])) {836 nsp32_msg(KERN_WARNING, "unknown id/lun");837 return FALSE;838 } else if(data->lunt[newid][newlun].SCpnt == NULL) {839 nsp32_msg(KERN_WARNING, "no SCSI command is processing");840 return FALSE;841 }842 843 data->cur_id = newid;844 data->cur_lun = newlun;845 data->cur_target = &(data->target[newid]);846 data->cur_lunt = &(data->lunt[newid][newlun]);847 848 /* reset SACK/SavedACK counter (or ALL clear?) */849 nsp32_write4(base, CLR_COUNTER, CLRCOUNTER_ALLMASK);850 851 return TRUE;852}853 854 855/*856 * nsp32_setup_sg_table - build scatter gather list for transfer data857 * with bus master.858 *859 * Note: NinjaSCSI-32Bi/UDE bus master can not transfer over 64KB at a time.860 */861static int nsp32_setup_sg_table(struct scsi_cmnd *SCpnt)862{863 nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata;864 struct scatterlist *sg;865 nsp32_sgtable *sgt = data->cur_lunt->sglun->sgt;866 int num, i;867 u32_le l;868 869 if (sgt == NULL) {870 nsp32_dbg(NSP32_DEBUG_SGLIST, "SGT == null");871 return FALSE;872 }873 874 num = scsi_dma_map(SCpnt);875 if (!num)876 return TRUE;877 else if (num < 0)878 return FALSE;879 else {880 scsi_for_each_sg(SCpnt, sg, num, i) {881 /*882 * Build nsp32_sglist, substitute sg dma addresses.883 */884 sgt[i].addr = cpu_to_le32(sg_dma_address(sg));885 sgt[i].len = cpu_to_le32(sg_dma_len(sg));886 887 if (le32_to_cpu(sgt[i].len) > 0x10000) {888 nsp32_msg(KERN_ERR,889 "can't transfer over 64KB at a time, "890 "size=0x%x", le32_to_cpu(sgt[i].len));891 return FALSE;892 }893 nsp32_dbg(NSP32_DEBUG_SGLIST,894 "num 0x%x : addr 0x%lx len 0x%lx",895 i,896 le32_to_cpu(sgt[i].addr),897 le32_to_cpu(sgt[i].len ));898 }899 900 /* set end mark */901 l = le32_to_cpu(sgt[num-1].len);902 sgt[num-1].len = cpu_to_le32(l | SGTEND);903 }904 905 return TRUE;906}907 908static int nsp32_queuecommand_lck(struct scsi_cmnd *SCpnt)909{910 void (*done)(struct scsi_cmnd *) = scsi_done;911 nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata;912 nsp32_target *target;913 nsp32_lunt *cur_lunt;914 int ret;915 916 nsp32_dbg(NSP32_DEBUG_QUEUECOMMAND,917 "enter. target: 0x%x LUN: 0x%llx cmnd: 0x%x cmndlen: 0x%x "918 "use_sg: 0x%x reqbuf: 0x%lx reqlen: 0x%x",919 SCpnt->device->id, SCpnt->device->lun, SCpnt->cmnd[0],920 SCpnt->cmd_len, scsi_sg_count(SCpnt), scsi_sglist(SCpnt),921 scsi_bufflen(SCpnt));922 923 if (data->CurrentSC != NULL) {924 nsp32_msg(KERN_ERR, "Currentsc != NULL. Cancel this command request");925 data->CurrentSC = NULL;926 SCpnt->result = DID_NO_CONNECT << 16;927 done(SCpnt);928 return 0;929 }930 931 /* check target ID is not same as this initiator ID */932 if (scmd_id(SCpnt) == SCpnt->device->host->this_id) {933 nsp32_dbg(NSP32_DEBUG_QUEUECOMMAND, "target==host???");934 SCpnt->result = DID_BAD_TARGET << 16;935 done(SCpnt);936 return 0;937 }938 939 /* check target LUN is allowable value */940 if (SCpnt->device->lun >= MAX_LUN) {941 nsp32_dbg(NSP32_DEBUG_QUEUECOMMAND, "no more lun");942 SCpnt->result = DID_BAD_TARGET << 16;943 done(SCpnt);944 return 0;945 }946 947 show_command(SCpnt);948 949 data->CurrentSC = SCpnt;950 nsp32_priv(SCpnt)->status = SAM_STAT_CHECK_CONDITION;951 scsi_set_resid(SCpnt, scsi_bufflen(SCpnt));952 953 /* initialize data */954 data->msgout_len = 0;955 data->msgin_len = 0;956 cur_lunt = &(data->lunt[SCpnt->device->id][SCpnt->device->lun]);957 cur_lunt->SCpnt = SCpnt;958 cur_lunt->save_datp = 0;959 cur_lunt->msgin03 = FALSE;960 data->cur_lunt = cur_lunt;961 data->cur_id = SCpnt->device->id;962 data->cur_lun = SCpnt->device->lun;963 964 ret = nsp32_setup_sg_table(SCpnt);965 if (ret == FALSE) {966 nsp32_msg(KERN_ERR, "SGT fail");967 SCpnt->result = DID_ERROR << 16;968 nsp32_scsi_done(SCpnt);969 return 0;970 }971 972 /* Build IDENTIFY */973 nsp32_build_identify(SCpnt);974 975 /*976 * If target is the first time to transfer after the reset977 * (target don't have SDTR_DONE and SDTR_INITIATOR), sync978 * message SDTR is needed to do synchronous transfer.979 */980 target = &data->target[scmd_id(SCpnt)];981 data->cur_target = target;982 983 if (!(target->sync_flag & (SDTR_DONE | SDTR_INITIATOR | SDTR_TARGET))) {984 unsigned char period, offset;985 986 if (trans_mode != ASYNC_MODE) {987 nsp32_set_max_sync(data, target, &period, &offset);988 nsp32_build_sdtr(SCpnt, period, offset);989 target->sync_flag |= SDTR_INITIATOR;990 } else {991 nsp32_set_async(data, target);992 target->sync_flag |= SDTR_DONE;993 }994 995 nsp32_dbg(NSP32_DEBUG_QUEUECOMMAND,996 "SDTR: entry: %d start_period: 0x%x offset: 0x%x\n",997 target->limit_entry, period, offset);998 } else if (target->sync_flag & SDTR_INITIATOR) {999 /*1000 * It was negotiating SDTR with target, sending from the1001 * initiator, but there are no chance to remove this flag.1002 * Set async because we don't get proper negotiation.1003 */1004 nsp32_set_async(data, target);1005 target->sync_flag &= ~SDTR_INITIATOR;1006 target->sync_flag |= SDTR_DONE;1007 1008 nsp32_dbg(NSP32_DEBUG_QUEUECOMMAND,1009 "SDTR_INITIATOR: fall back to async");1010 } else if (target->sync_flag & SDTR_TARGET) {1011 /*1012 * It was negotiating SDTR with target, sending from target,1013 * but there are no chance to remove this flag. Set async1014 * because we don't get proper negotiation.1015 */1016 nsp32_set_async(data, target);1017 target->sync_flag &= ~SDTR_TARGET;1018 target->sync_flag |= SDTR_DONE;1019 1020 nsp32_dbg(NSP32_DEBUG_QUEUECOMMAND,1021 "Unknown SDTR from target is reached, fall back to async.");1022 }1023 1024 nsp32_dbg(NSP32_DEBUG_TARGETFLAG,1025 "target: %d sync_flag: 0x%x syncreg: 0x%x ackwidth: 0x%x",1026 SCpnt->device->id, target->sync_flag, target->syncreg,1027 target->ackwidth);1028 1029 /* Selection */1030 if (auto_param == 0) {1031 ret = nsp32_selection_autopara(SCpnt);1032 } else {1033 ret = nsp32_selection_autoscsi(SCpnt);1034 }1035 1036 if (ret != TRUE) {1037 nsp32_dbg(NSP32_DEBUG_QUEUECOMMAND, "selection fail");1038 nsp32_scsi_done(SCpnt);1039 }1040 1041 return 0;1042}1043 1044static DEF_SCSI_QCMD(nsp32_queuecommand)1045 1046/* initialize asic */1047static int nsp32hw_init(nsp32_hw_data *data)1048{1049 unsigned int base = data->BaseAddress;1050 unsigned short irq_stat;1051 unsigned long lc_reg;1052 unsigned char power;1053 1054 lc_reg = nsp32_index_read4(base, CFG_LATE_CACHE);1055 if ((lc_reg & 0xff00) == 0) {1056 lc_reg |= (0x20 << 8);1057 nsp32_index_write2(base, CFG_LATE_CACHE, lc_reg & 0xffff);1058 }1059 1060 nsp32_write2(base, IRQ_CONTROL, IRQ_CONTROL_ALL_IRQ_MASK);1061 nsp32_write2(base, TRANSFER_CONTROL, 0);1062 nsp32_write4(base, BM_CNT, 0);1063 nsp32_write2(base, SCSI_EXECUTE_PHASE, 0);1064 1065 do {1066 irq_stat = nsp32_read2(base, IRQ_STATUS);1067 nsp32_dbg(NSP32_DEBUG_INIT, "irq_stat 0x%x", irq_stat);1068 } while (irq_stat & IRQSTATUS_ANY_IRQ);1069 1070 /*1071 * Fill FIFO_FULL_SHLD, FIFO_EMPTY_SHLD. Below parameter is1072 * designated by specification.1073 */1074 if ((data->trans_method & NSP32_TRANSFER_PIO) ||1075 (data->trans_method & NSP32_TRANSFER_MMIO)) {1076 nsp32_index_write1(base, FIFO_FULL_SHLD_COUNT, 0x40);1077 nsp32_index_write1(base, FIFO_EMPTY_SHLD_COUNT, 0x40);1078 } else if (data->trans_method & NSP32_TRANSFER_BUSMASTER) {1079 nsp32_index_write1(base, FIFO_FULL_SHLD_COUNT, 0x10);1080 nsp32_index_write1(base, FIFO_EMPTY_SHLD_COUNT, 0x60);1081 } else {1082 nsp32_dbg(NSP32_DEBUG_INIT, "unknown transfer mode");1083 }1084 1085 nsp32_dbg(NSP32_DEBUG_INIT, "full 0x%x emp 0x%x",1086 nsp32_index_read1(base, FIFO_FULL_SHLD_COUNT),1087 nsp32_index_read1(base, FIFO_EMPTY_SHLD_COUNT));1088 1089 nsp32_index_write1(base, CLOCK_DIV, data->clock);1090 nsp32_index_write1(base, BM_CYCLE,1091 MEMRD_CMD1 | SGT_AUTO_PARA_MEMED_CMD);1092 nsp32_write1(base, PARITY_CONTROL, 0); /* parity check is disable */1093 1094 /*1095 * initialize MISC_WRRD register1096 *1097 * Note: Designated parameters is obeyed as following:1098 * MISC_SCSI_DIRECTION_DETECTOR_SELECT: It must be set.1099 * MISC_MASTER_TERMINATION_SELECT: It must be set.1100 * MISC_BMREQ_NEGATE_TIMING_SEL: It should be set.1101 * MISC_AUTOSEL_TIMING_SEL: It should be set.1102 * MISC_BMSTOP_CHANGE2_NONDATA_PHASE: It should be set.1103 * MISC_DELAYED_BMSTART: It's selected for safety.1104 *1105 * Note: If MISC_BMSTOP_CHANGE2_NONDATA_PHASE is set, then1106 * we have to set TRANSFERCONTROL_BM_START as 0 and set1107 * appropriate value before restarting bus master transfer.1108 */1109 nsp32_index_write2(base, MISC_WR,1110 (SCSI_DIRECTION_DETECTOR_SELECT |1111 DELAYED_BMSTART |1112 MASTER_TERMINATION_SELECT |1113 BMREQ_NEGATE_TIMING_SEL |1114 AUTOSEL_TIMING_SEL |1115 BMSTOP_CHANGE2_NONDATA_PHASE));1116 1117 nsp32_index_write1(base, TERM_PWR_CONTROL, 0);1118 power = nsp32_index_read1(base, TERM_PWR_CONTROL);1119 if (!(power & SENSE)) {1120 nsp32_msg(KERN_INFO, "term power on");1121 nsp32_index_write1(base, TERM_PWR_CONTROL, BPWR);1122 }1123 1124 nsp32_write2(base, TIMER_SET, TIMER_STOP);1125 nsp32_write2(base, TIMER_SET, TIMER_STOP); /* Required 2 times */1126 1127 nsp32_write1(base, SYNC_REG, 0);1128 nsp32_write1(base, ACK_WIDTH, 0);1129 nsp32_write2(base, SEL_TIME_OUT, SEL_TIMEOUT_TIME);1130 1131 /*1132 * enable to select designated IRQ (except for1133 * IRQSELECT_SERR, IRQSELECT_PERR, IRQSELECT_BMCNTERR)1134 */1135 nsp32_index_write2(base, IRQ_SELECT,1136 IRQSELECT_TIMER_IRQ |1137 IRQSELECT_SCSIRESET_IRQ |1138 IRQSELECT_FIFO_SHLD_IRQ |1139 IRQSELECT_RESELECT_IRQ |1140 IRQSELECT_PHASE_CHANGE_IRQ |1141 IRQSELECT_AUTO_SCSI_SEQ_IRQ |1142 // IRQSELECT_BMCNTERR_IRQ |1143 IRQSELECT_TARGET_ABORT_IRQ |1144 IRQSELECT_MASTER_ABORT_IRQ );1145 nsp32_write2(base, IRQ_CONTROL, 0);1146 1147 /* PCI LED off */1148 nsp32_index_write1(base, EXT_PORT_DDR, LED_OFF);1149 nsp32_index_write1(base, EXT_PORT, LED_OFF);1150 1151 return TRUE;1152}1153 1154 1155/* interrupt routine */1156static irqreturn_t do_nsp32_isr(int irq, void *dev_id)1157{1158 nsp32_hw_data *data = dev_id;1159 unsigned int base = data->BaseAddress;1160 struct scsi_cmnd *SCpnt = data->CurrentSC;1161 unsigned short auto_stat, irq_stat, trans_stat;1162 unsigned char busmon, busphase;1163 unsigned long flags;1164 int ret;1165 int handled = 0;1166 struct Scsi_Host *host = data->Host;1167 1168 spin_lock_irqsave(host->host_lock, flags);1169 1170 /*1171 * IRQ check, then enable IRQ mask1172 */1173 irq_stat = nsp32_read2(base, IRQ_STATUS);1174 nsp32_dbg(NSP32_DEBUG_INTR,1175 "enter IRQ: %d, IRQstatus: 0x%x", irq, irq_stat);1176 /* is this interrupt comes from Ninja asic? */1177 if ((irq_stat & IRQSTATUS_ANY_IRQ) == 0) {1178 nsp32_dbg(NSP32_DEBUG_INTR,1179 "shared interrupt: irq other 0x%x", irq_stat);1180 goto out2;1181 }1182 handled = 1;1183 nsp32_write2(base, IRQ_CONTROL, IRQ_CONTROL_ALL_IRQ_MASK);1184 1185 busmon = nsp32_read1(base, SCSI_BUS_MONITOR);1186 busphase = busmon & BUSMON_PHASE_MASK;1187 1188 trans_stat = nsp32_read2(base, TRANSFER_STATUS);1189 if ((irq_stat == 0xffff) && (trans_stat == 0xffff)) {1190 nsp32_msg(KERN_INFO, "card disconnect");1191 if (data->CurrentSC != NULL) {1192 nsp32_msg(KERN_INFO, "clean up current SCSI command");1193 SCpnt->result = DID_BAD_TARGET << 16;1194 nsp32_scsi_done(SCpnt);1195 }1196 goto out;1197 }1198 1199 /* Timer IRQ */1200 if (irq_stat & IRQSTATUS_TIMER_IRQ) {1201 nsp32_dbg(NSP32_DEBUG_INTR, "timer stop");1202 nsp32_write2(base, TIMER_SET, TIMER_STOP);1203 goto out;1204 }1205 1206 /* SCSI reset */1207 if (irq_stat & IRQSTATUS_SCSIRESET_IRQ) {1208 nsp32_msg(KERN_INFO, "detected someone do bus reset");1209 nsp32_do_bus_reset(data);1210 if (SCpnt != NULL) {1211 SCpnt->result = DID_RESET << 16;1212 nsp32_scsi_done(SCpnt);1213 }1214 goto out;1215 }1216 1217 if (SCpnt == NULL) {1218 nsp32_msg(KERN_WARNING, "SCpnt==NULL this can't be happened");1219 nsp32_msg(KERN_WARNING, "irq_stat=0x%x trans_stat=0x%x",1220 irq_stat, trans_stat);1221 goto out;1222 }1223 1224 /*1225 * AutoSCSI Interrupt.1226 * Note: This interrupt is occurred when AutoSCSI is finished. Then1227 * check SCSIEXECUTEPHASE, and do appropriate action. Each phases are1228 * recorded when AutoSCSI sequencer has been processed.1229 */1230 if(irq_stat & IRQSTATUS_AUTOSCSI_IRQ) {1231 /* getting SCSI executed phase */1232 auto_stat = nsp32_read2(base, SCSI_EXECUTE_PHASE);1233 nsp32_write2(base, SCSI_EXECUTE_PHASE, 0);1234 1235 /* Selection Timeout, go busfree phase. */1236 if (auto_stat & SELECTION_TIMEOUT) {1237 nsp32_dbg(NSP32_DEBUG_INTR,1238 "selection timeout occurred");1239 1240 SCpnt->result = DID_TIME_OUT << 16;1241 nsp32_scsi_done(SCpnt);1242 goto out;1243 }1244 1245 if (auto_stat & MSGOUT_PHASE) {1246 /*1247 * MsgOut phase was processed.1248 * If MSG_IN_OCCUER is not set, then MsgOut phase is1249 * completed. Thus, msgout_len must reset. Otherwise,1250 * nothing to do here. If MSG_OUT_OCCUER is occurred,1251 * then we will encounter the condition and check.1252 */1253 if (!(auto_stat & MSG_IN_OCCUER) &&1254 (data->msgout_len <= 3)) {1255 /*1256 * !MSG_IN_OCCUER && msgout_len <=31257 * ---> AutoSCSI with MSGOUTreg is processed.1258 */1259 data->msgout_len = 0;1260 }1261 1262 nsp32_dbg(NSP32_DEBUG_INTR, "MsgOut phase processed");1263 }1264 1265 if ((auto_stat & DATA_IN_PHASE) &&1266 (scsi_get_resid(SCpnt) > 0) &&1267 ((nsp32_read2(base, FIFO_REST_CNT) & FIFO_REST_MASK) != 0)) {1268 printk( "auto+fifo\n");1269 //nsp32_pio_read(SCpnt);1270 }1271 1272 if (auto_stat & (DATA_IN_PHASE | DATA_OUT_PHASE)) {1273 /* DATA_IN_PHASE/DATA_OUT_PHASE was processed. */1274 nsp32_dbg(NSP32_DEBUG_INTR,1275 "Data in/out phase processed");1276 1277 /* read BMCNT, SGT pointer addr */1278 nsp32_dbg(NSP32_DEBUG_INTR, "BMCNT=0x%lx",1279 nsp32_read4(base, BM_CNT));1280 nsp32_dbg(NSP32_DEBUG_INTR, "addr=0x%lx",1281 nsp32_read4(base, SGT_ADR));1282 nsp32_dbg(NSP32_DEBUG_INTR, "SACK=0x%lx",1283 nsp32_read4(base, SACK_CNT));1284 nsp32_dbg(NSP32_DEBUG_INTR, "SSACK=0x%lx",1285 nsp32_read4(base, SAVED_SACK_CNT));1286 1287 scsi_set_resid(SCpnt, 0); /* all data transferred! */1288 }1289 1290 /*1291 * MsgIn Occur1292 */1293 if (auto_stat & MSG_IN_OCCUER) {1294 nsp32_msgin_occur(SCpnt, irq_stat, auto_stat);1295 }1296 1297 /*1298 * MsgOut Occur1299 */1300 if (auto_stat & MSG_OUT_OCCUER) {1301 nsp32_msgout_occur(SCpnt);1302 }1303 1304 /*1305 * Bus Free Occur1306 */1307 if (auto_stat & BUS_FREE_OCCUER) {1308 ret = nsp32_busfree_occur(SCpnt, auto_stat);1309 if (ret == TRUE) {1310 goto out;1311 }1312 }1313 1314 if (auto_stat & STATUS_PHASE) {1315 /*1316 * Read CSB and substitute CSB for SCpnt->result1317 * to save status phase stutas byte.1318 * scsi error handler checks host_byte (DID_*:1319 * low level driver to indicate status), then checks1320 * status_byte (SCSI status byte).1321 */1322 SCpnt->result = (int)nsp32_read1(base, SCSI_CSB_IN);1323 }1324 1325 if (auto_stat & ILLEGAL_PHASE) {1326 /* Illegal phase is detected. SACK is not back. */1327 nsp32_msg(KERN_WARNING,1328 "AUTO SCSI ILLEGAL PHASE OCCUR!!!!");1329 1330 /* TODO: currently we don't have any action... bus reset? */1331 1332 /*1333 * To send back SACK, assert, wait, and negate.1334 */1335 nsp32_sack_assert(data);1336 nsp32_wait_req(data, NEGATE);1337 nsp32_sack_negate(data);1338 1339 }1340 1341 if (auto_stat & COMMAND_PHASE) {1342 /* nothing to do */1343 nsp32_dbg(NSP32_DEBUG_INTR, "Command phase processed");1344 }1345 1346 if (auto_stat & AUTOSCSI_BUSY) {1347 /* AutoSCSI is running */1348 }1349 1350 show_autophase(auto_stat);1351 }1352 1353 /* FIFO_SHLD_IRQ */1354 if (irq_stat & IRQSTATUS_FIFO_SHLD_IRQ) {1355 nsp32_dbg(NSP32_DEBUG_INTR, "FIFO IRQ");1356 1357 switch(busphase) {1358 case BUSPHASE_DATA_OUT:1359 nsp32_dbg(NSP32_DEBUG_INTR, "fifo/write");1360 1361 //nsp32_pio_write(SCpnt);1362 1363 break;1364 1365 case BUSPHASE_DATA_IN:1366 nsp32_dbg(NSP32_DEBUG_INTR, "fifo/read");1367 1368 //nsp32_pio_read(SCpnt);1369 1370 break;1371 1372 case BUSPHASE_STATUS:1373 nsp32_dbg(NSP32_DEBUG_INTR, "fifo/status");1374 1375 nsp32_priv(SCpnt)->status = nsp32_read1(base, SCSI_CSB_IN);1376 1377 break;1378 default:1379 nsp32_dbg(NSP32_DEBUG_INTR, "fifo/other phase");1380 nsp32_dbg(NSP32_DEBUG_INTR, "irq_stat=0x%x trans_stat=0x%x",1381 irq_stat, trans_stat);1382 show_busphase(busphase);1383 break;1384 }1385 1386 goto out;1387 }1388 1389 /* Phase Change IRQ */1390 if (irq_stat & IRQSTATUS_PHASE_CHANGE_IRQ) {1391 nsp32_dbg(NSP32_DEBUG_INTR, "phase change IRQ");1392 1393 switch(busphase) {1394 case BUSPHASE_MESSAGE_IN:1395 nsp32_dbg(NSP32_DEBUG_INTR, "phase chg/msg in");1396 nsp32_msgin_occur(SCpnt, irq_stat, 0);1397 break;1398 default:1399 nsp32_msg(KERN_WARNING, "phase chg/other phase?");1400 nsp32_msg(KERN_WARNING, "irq_stat=0x%x trans_stat=0x%x\n",1401 irq_stat, trans_stat);1402 show_busphase(busphase);1403 break;1404 }1405 goto out;1406 }1407 1408 /* PCI_IRQ */1409 if (irq_stat & IRQSTATUS_PCI_IRQ) {1410 nsp32_dbg(NSP32_DEBUG_INTR, "PCI IRQ occurred");1411 /* Do nothing */1412 }1413 1414 /* BMCNTERR_IRQ */1415 if (irq_stat & IRQSTATUS_BMCNTERR_IRQ) {1416 nsp32_msg(KERN_ERR, "Received unexpected BMCNTERR IRQ! ");1417 /*1418 * TODO: To be implemented improving bus master1419 * transfer reliability when BMCNTERR is occurred in1420 * AutoSCSI phase described in specification.1421 */1422 }1423 1424#if 01425 nsp32_dbg(NSP32_DEBUG_INTR,1426 "irq_stat=0x%x trans_stat=0x%x", irq_stat, trans_stat);1427 show_busphase(busphase);1428#endif1429 1430 out:1431 /* disable IRQ mask */1432 nsp32_write2(base, IRQ_CONTROL, 0);1433 1434 out2:1435 spin_unlock_irqrestore(host->host_lock, flags);1436 1437 nsp32_dbg(NSP32_DEBUG_INTR, "exit");1438 1439 return IRQ_RETVAL(handled);1440}1441 1442 1443static int nsp32_show_info(struct seq_file *m, struct Scsi_Host *host)1444{1445 unsigned long flags;1446 nsp32_hw_data *data;1447 int hostno;1448 unsigned int base;1449 unsigned char mode_reg;1450 int id, speed;1451 long model;1452 1453 hostno = host->host_no;1454 data = (nsp32_hw_data *)host->hostdata;1455 base = host->io_port;1456 1457 seq_puts(m, "NinjaSCSI-32 status\n\n");1458 seq_printf(m, "Driver version: %s, $Revision: 1.33 $\n",1459 nsp32_release_version);1460 seq_printf(m, "SCSI host No.: %d\n", hostno);1461 seq_printf(m, "IRQ: %d\n", host->irq);1462 seq_printf(m, "IO: 0x%lx-0x%lx\n",1463 host->io_port, host->io_port + host->n_io_port - 1);1464 seq_printf(m, "MMIO(virtual address): 0x%lx-0x%lx\n",1465 host->base, host->base + data->MmioLength - 1);1466 seq_printf(m, "sg_tablesize: %d\n",1467 host->sg_tablesize);1468 seq_printf(m, "Chip revision: 0x%x\n",1469 (nsp32_read2(base, INDEX_REG) >> 8) & 0xff);1470 1471 mode_reg = nsp32_index_read1(base, CHIP_MODE);1472 model = data->pci_devid->driver_data;1473 1474#ifdef CONFIG_PM1475 seq_printf(m, "Power Management: %s\n",1476 (mode_reg & OPTF) ? "yes" : "no");1477#endif1478 seq_printf(m, "OEM: %ld, %s\n",1479 (mode_reg & (OEM0|OEM1)), nsp32_model[model]);1480 1481 spin_lock_irqsave(&(data->Lock), flags);1482 seq_printf(m, "CurrentSC: 0x%p\n\n", data->CurrentSC);1483 spin_unlock_irqrestore(&(data->Lock), flags);1484 1485 1486 seq_puts(m, "SDTR status\n");1487 for (id = 0; id < ARRAY_SIZE(data->target); id++) {1488 1489 seq_printf(m, "id %d: ", id);1490 1491 if (id == host->this_id) {1492 seq_puts(m, "----- NinjaSCSI-32 host adapter\n");1493 continue;1494 }1495 1496 if (data->target[id].sync_flag == SDTR_DONE) {1497 if (data->target[id].period == 0 &&1498 data->target[id].offset == ASYNC_OFFSET ) {1499 seq_puts(m, "async");1500 } else {1501 seq_puts(m, " sync");1502 }1503 } else {1504 seq_puts(m, " none");1505 }1506 1507 if (data->target[id].period != 0) {1508 1509 speed = 1000000 / (data->target[id].period * 4);1510 1511 seq_printf(m, " transfer %d.%dMB/s, offset %d",1512 speed / 1000,1513 speed % 1000,1514 data->target[id].offset1515 );1516 }1517 seq_putc(m, '\n');1518 }1519 return 0;1520}1521 1522 1523 1524/*1525 * Reset parameters and call scsi_done for data->cur_lunt.1526 * Be careful setting SCpnt->result = DID_* before calling this function.1527 */1528static void nsp32_scsi_done(struct scsi_cmnd *SCpnt)1529{1530 nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata;1531 unsigned int base = SCpnt->device->host->io_port;1532 1533 scsi_dma_unmap(SCpnt);1534 1535 /*1536 * clear TRANSFERCONTROL_BM_START1537 */1538 nsp32_write2(base, TRANSFER_CONTROL, 0);1539 nsp32_write4(base, BM_CNT, 0);1540 1541 /*1542 * call scsi_done1543 */1544 scsi_done(SCpnt);1545 1546 /*1547 * reset parameters1548 */1549 data->cur_lunt->SCpnt = NULL;1550 data->cur_lunt = NULL;1551 data->cur_target = NULL;1552 data->CurrentSC = NULL;1553}1554 1555 1556/*1557 * Bus Free Occur1558 *1559 * Current Phase is BUSFREE. AutoSCSI is automatically execute BUSFREE phase1560 * with ACK reply when below condition is matched:1561 * MsgIn 00: Command Complete.1562 * MsgIn 02: Save Data Pointer.1563 * MsgIn 04: Disconnect.1564 * In other case, unexpected BUSFREE is detected.1565 */1566static int nsp32_busfree_occur(struct scsi_cmnd *SCpnt, unsigned short execph)1567{1568 nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata;1569 unsigned int base = SCpnt->device->host->io_port;1570 1571 nsp32_dbg(NSP32_DEBUG_BUSFREE, "enter execph=0x%x", execph);1572 show_autophase(execph);1573 1574 nsp32_write4(base, BM_CNT, 0);1575 nsp32_write2(base, TRANSFER_CONTROL, 0);1576 1577 /*1578 * MsgIn 02: Save Data Pointer1579 *1580 * VALID:1581 * Save Data Pointer is received. Adjust pointer.1582 *1583 * NO-VALID:1584 * SCSI-3 says if Save Data Pointer is not received, then we restart1585 * processing and we can't adjust any SCSI data pointer in next data1586 * phase.1587 */1588 if (execph & MSGIN_02_VALID) {1589 nsp32_dbg(NSP32_DEBUG_BUSFREE, "MsgIn02_Valid");1590 1591 /*1592 * Check sack_cnt/saved_sack_cnt, then adjust sg table if1593 * needed.1594 */1595 if (!(execph & MSGIN_00_VALID) &&1596 ((execph & DATA_IN_PHASE) || (execph & DATA_OUT_PHASE))) {1597 unsigned int sacklen, s_sacklen;1598 1599 /*1600 * Read SACK count and SAVEDSACK count, then compare.1601 */1602 sacklen = nsp32_read4(base, SACK_CNT );1603 s_sacklen = nsp32_read4(base, SAVED_SACK_CNT);1604 1605 /*1606 * If SAVEDSACKCNT == 0, it means SavedDataPointer is1607 * come after data transferring.1608 */1609 if (s_sacklen > 0) {1610 /*1611 * Comparing between sack and savedsack to1612 * check the condition of AutoMsgIn03.1613 *1614 * If they are same, set msgin03 == TRUE,1615 * COMMANDCONTROL_AUTO_MSGIN_03 is enabled at1616 * reselection. On the other hand, if they1617 * aren't same, set msgin03 == FALSE, and1618 * COMMANDCONTROL_AUTO_MSGIN_03 is disabled at1619 * reselection.1620 */1621 if (sacklen != s_sacklen) {1622 data->cur_lunt->msgin03 = FALSE;1623 } else {1624 data->cur_lunt->msgin03 = TRUE;1625 }1626 1627 nsp32_adjust_busfree(SCpnt, s_sacklen);1628 }1629 }1630 1631 /* This value has not substitude with valid value yet... */1632 //data->cur_lunt->save_datp = data->cur_datp;1633 } else {1634 /*1635 * no processing.1636 */1637 }1638 1639 if (execph & MSGIN_03_VALID) {1640 /* MsgIn03 was valid to be processed. No need processing. */1641 }1642 1643 /*1644 * target SDTR check1645 */1646 if (data->cur_target->sync_flag & SDTR_INITIATOR) {1647 /*1648 * SDTR negotiation pulled by the initiator has not1649 * finished yet. Fall back to ASYNC mode.1650 */1651 nsp32_set_async(data, data->cur_target);1652 data->cur_target->sync_flag &= ~SDTR_INITIATOR;1653 data->cur_target->sync_flag |= SDTR_DONE;1654 } else if (data->cur_target->sync_flag & SDTR_TARGET) {1655 /*1656 * SDTR negotiation pulled by the target has been1657 * negotiating.1658 */1659 if (execph & (MSGIN_00_VALID | MSGIN_04_VALID)) {1660 /*1661 * If valid message is received, then1662 * negotiation is succeeded.1663 */1664 } else {1665 /*1666 * On the contrary, if unexpected bus free is1667 * occurred, then negotiation is failed. Fall1668 * back to ASYNC mode.1669 */1670 nsp32_set_async(data, data->cur_target);1671 }1672 data->cur_target->sync_flag &= ~SDTR_TARGET;1673 data->cur_target->sync_flag |= SDTR_DONE;1674 }1675 1676 /*1677 * It is always ensured by SCSI standard that initiator1678 * switches into Bus Free Phase after1679 * receiving message 00 (Command Complete), 04 (Disconnect).1680 * It's the reason that processing here is valid.1681 */1682 if (execph & MSGIN_00_VALID) {1683 /* MsgIn 00: Command Complete */1684 nsp32_dbg(NSP32_DEBUG_BUSFREE, "command complete");1685 1686 nsp32_priv(SCpnt)->status = nsp32_read1(base, SCSI_CSB_IN);1687 nsp32_dbg(NSP32_DEBUG_BUSFREE,1688 "normal end stat=0x%x resid=0x%x\n",1689 nsp32_priv(SCpnt)->status, scsi_get_resid(SCpnt));1690 SCpnt->result = (DID_OK << 16) |1691 (nsp32_priv(SCpnt)->status << 0);1692 nsp32_scsi_done(SCpnt);1693 /* All operation is done */1694 return TRUE;1695 } else if (execph & MSGIN_04_VALID) {1696 /* MsgIn 04: Disconnect */1697 nsp32_priv(SCpnt)->status = nsp32_read1(base, SCSI_CSB_IN);1698 1699 nsp32_dbg(NSP32_DEBUG_BUSFREE, "disconnect");1700 return TRUE;1701 } else {1702 /* Unexpected bus free */1703 nsp32_msg(KERN_WARNING, "unexpected bus free occurred");1704 1705 SCpnt->result = DID_ERROR << 16;1706 nsp32_scsi_done(SCpnt);1707 return TRUE;1708 }1709 return FALSE;1710}1711 1712 1713/*1714 * nsp32_adjust_busfree - adjusting SG table1715 *1716 * Note: This driver adjust the SG table using SCSI ACK1717 * counter instead of BMCNT counter!1718 */1719static void nsp32_adjust_busfree(struct scsi_cmnd *SCpnt, unsigned int s_sacklen)1720{1721 nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata;1722 int old_entry = data->cur_entry;1723 int new_entry;1724 int sg_num = data->cur_lunt->sg_num;1725 nsp32_sgtable *sgt = data->cur_lunt->sglun->sgt;1726 unsigned int restlen, sentlen;1727 u32_le len, addr;1728 1729 nsp32_dbg(NSP32_DEBUG_SGLIST, "old resid=0x%x", scsi_get_resid(SCpnt));1730 1731 /* adjust saved SACK count with 4 byte start address boundary */1732 s_sacklen -= le32_to_cpu(sgt[old_entry].addr) & 3;1733 1734 /*1735 * calculate new_entry from sack count and each sgt[].len1736 * calculate the byte which is intent to send1737 */1738 sentlen = 0;1739 for (new_entry = old_entry; new_entry < sg_num; new_entry++) {1740 sentlen += (le32_to_cpu(sgt[new_entry].len) & ~SGTEND);1741 if (sentlen > s_sacklen) {1742 break;1743 }1744 }1745 1746 /* all sgt is processed */1747 if (new_entry == sg_num) {1748 goto last;1749 }1750 1751 if (sentlen == s_sacklen) {1752 /* XXX: confirm it's ok or not */1753 /* In this case, it's ok because we are at1754 * the head element of the sg. restlen is correctly1755 * calculated.1756 */1757 }1758 1759 /* calculate the rest length for transferring */1760 restlen = sentlen - s_sacklen;1761 1762 /* update adjusting current SG table entry */1763 len = le32_to_cpu(sgt[new_entry].len);1764 addr = le32_to_cpu(sgt[new_entry].addr);1765 addr += (len - restlen);1766 sgt[new_entry].addr = cpu_to_le32(addr);1767 sgt[new_entry].len = cpu_to_le32(restlen);1768 1769 /* set cur_entry with new_entry */1770 data->cur_entry = new_entry;1771 1772 return;1773 1774 last:1775 if (scsi_get_resid(SCpnt) < sentlen) {1776 nsp32_msg(KERN_ERR, "resid underflow");1777 }1778 1779 scsi_set_resid(SCpnt, scsi_get_resid(SCpnt) - sentlen);1780 nsp32_dbg(NSP32_DEBUG_SGLIST, "new resid=0x%x", scsi_get_resid(SCpnt));1781 1782 /* update hostdata and lun */1783 1784 return;1785}1786 1787 1788/*1789 * It's called MsgOut phase occur.1790 * NinjaSCSI-32Bi/UDE automatically processes up to 3 messages in1791 * message out phase. It, however, has more than 3 messages,1792 * HBA creates the interrupt and we have to process by hand.1793 */1794static void nsp32_msgout_occur(struct scsi_cmnd *SCpnt)1795{1796 nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata;1797 unsigned int base = SCpnt->device->host->io_port;1798 int i;1799 1800 nsp32_dbg(NSP32_DEBUG_MSGOUTOCCUR,1801 "enter: msgout_len: 0x%x", data->msgout_len);1802 1803 /*1804 * If MsgOut phase is occurred without having any1805 * message, then No_Operation is sent (SCSI-2).1806 */1807 if (data->msgout_len == 0) {1808 nsp32_build_nop(SCpnt);1809 }1810 1811 /*1812 * send messages1813 */1814 for (i = 0; i < data->msgout_len; i++) {1815 nsp32_dbg(NSP32_DEBUG_MSGOUTOCCUR,1816 "%d : 0x%x", i, data->msgoutbuf[i]);1817 1818 /*1819 * Check REQ is asserted.1820 */1821 nsp32_wait_req(data, ASSERT);1822 1823 if (i == (data->msgout_len - 1)) {1824 /*1825 * If the last message, set the AutoSCSI restart1826 * before send back the ack message. AutoSCSI1827 * restart automatically negate ATN signal.1828 */1829 //command = (AUTO_MSGIN_00_OR_04 | AUTO_MSGIN_02);1830 //nsp32_restart_autoscsi(SCpnt, command);1831 nsp32_write2(base, COMMAND_CONTROL,1832 (CLEAR_CDB_FIFO_POINTER |1833 AUTO_COMMAND_PHASE |1834 AUTOSCSI_RESTART |1835 AUTO_MSGIN_00_OR_04 |1836 AUTO_MSGIN_02 ));1837 }1838 /*1839 * Write data with SACK, then wait sack is1840 * automatically negated.1841 */1842 nsp32_write1(base, SCSI_DATA_WITH_ACK, data->msgoutbuf[i]);1843 nsp32_wait_sack(data, NEGATE);1844 1845 nsp32_dbg(NSP32_DEBUG_MSGOUTOCCUR, "bus: 0x%x\n",1846 nsp32_read1(base, SCSI_BUS_MONITOR));1847 }1848 1849 data->msgout_len = 0;1850 1851 nsp32_dbg(NSP32_DEBUG_MSGOUTOCCUR, "exit");1852}1853 1854/*1855 * Restart AutoSCSI1856 *1857 * Note: Restarting AutoSCSI needs set:1858 * SYNC_REG, ACK_WIDTH, SGT_ADR, TRANSFER_CONTROL1859 */1860static void nsp32_restart_autoscsi(struct scsi_cmnd *SCpnt, unsigned short command)1861{1862 nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata;1863 unsigned int base = data->BaseAddress;1864 unsigned short transfer = 0;1865 1866 nsp32_dbg(NSP32_DEBUG_RESTART, "enter");1867 1868 if (data->cur_target == NULL || data->cur_lunt == NULL) {1869 nsp32_msg(KERN_ERR, "Target or Lun is invalid");1870 }1871 1872 /*1873 * set SYNC_REG1874 * Don't set BM_START_ADR before setting this register.1875 */1876 nsp32_write1(base, SYNC_REG, data->cur_target->syncreg);1877 1878 /*1879 * set ACKWIDTH1880 */1881 nsp32_write1(base, ACK_WIDTH, data->cur_target->ackwidth);1882 1883 /*1884 * set SREQ hazard killer sampling rate1885 */1886 nsp32_write1(base, SREQ_SMPL_RATE, data->cur_target->sample_reg);1887 1888 /*1889 * set SGT ADDR (physical address)1890 */1891 nsp32_write4(base, SGT_ADR, data->cur_lunt->sglun_paddr);1892 1893 /*1894 * set TRANSFER CONTROL REG1895 */1896 transfer = 0;1897 transfer |= (TRANSFER_GO | ALL_COUNTER_CLR);1898 if (data->trans_method & NSP32_TRANSFER_BUSMASTER) {1899 if (scsi_bufflen(SCpnt) > 0) {1900 transfer |= BM_START;1901 }1902 } else if (data->trans_method & NSP32_TRANSFER_MMIO) {1903 transfer |= CB_MMIO_MODE;1904 } else if (data->trans_method & NSP32_TRANSFER_PIO) {1905 transfer |= CB_IO_MODE;1906 }1907 nsp32_write2(base, TRANSFER_CONTROL, transfer);1908 1909 /*1910 * restart AutoSCSI1911 *1912 * TODO: COMMANDCONTROL_AUTO_COMMAND_PHASE is needed ?1913 */1914 command |= (CLEAR_CDB_FIFO_POINTER |1915 AUTO_COMMAND_PHASE |1916 AUTOSCSI_RESTART );1917 nsp32_write2(base, COMMAND_CONTROL, command);1918 1919 nsp32_dbg(NSP32_DEBUG_RESTART, "exit");1920}1921 1922 1923/*1924 * cannot run automatically message in occur1925 */1926static void nsp32_msgin_occur(struct scsi_cmnd *SCpnt,1927 unsigned long irq_status,1928 unsigned short execph)1929{1930 nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata;1931 unsigned int base = SCpnt->device->host->io_port;1932 unsigned char msg;1933 unsigned char msgtype;1934 unsigned char newlun;1935 unsigned short command = 0;1936 int msgclear = TRUE;1937 long new_sgtp;1938 int ret;1939 1940 /*1941 * read first message1942 * Use SCSIDATA_W_ACK instead of SCSIDATAIN, because the procedure1943 * of Message-In have to be processed before sending back SCSI ACK.1944 */1945 msg = nsp32_read1(base, SCSI_DATA_IN);1946 data->msginbuf[(unsigned char)data->msgin_len] = msg;1947 msgtype = data->msginbuf[0];1948 nsp32_dbg(NSP32_DEBUG_MSGINOCCUR,1949 "enter: msglen: 0x%x msgin: 0x%x msgtype: 0x%x",1950 data->msgin_len, msg, msgtype);1951 1952 /*1953 * TODO: We need checking whether bus phase is message in?1954 */1955 1956 /*1957 * assert SCSI ACK1958 */1959 nsp32_sack_assert(data);1960 1961 /*1962 * processing IDENTIFY1963 */1964 if (msgtype & 0x80) {1965 if (!(irq_status & IRQSTATUS_RESELECT_OCCUER)) {1966 /* Invalid (non reselect) phase */1967 goto reject;1968 }1969 1970 newlun = msgtype & 0x1f; /* TODO: SPI-3 compliant? */1971 ret = nsp32_reselection(SCpnt, newlun);1972 if (ret == TRUE) {1973 goto restart;1974 } else {1975 goto reject;1976 }1977 }1978 1979 /*1980 * processing messages except for IDENTIFY1981 *1982 * TODO: Messages are all SCSI-2 terminology. SCSI-3 compliance is TODO.1983 */1984 switch (msgtype) {1985 /*1986 * 1-byte message1987 */1988 case COMMAND_COMPLETE:1989 case DISCONNECT:1990 /*1991 * These messages should not be occurred.1992 * They should be processed on AutoSCSI sequencer.1993 */1994 nsp32_msg(KERN_WARNING,1995 "unexpected message of AutoSCSI MsgIn: 0x%x", msg);1996 break;1997 1998 case RESTORE_POINTERS:1999 /*2000 * AutoMsgIn03 is disabled, and HBA gets this message.2001 */2002 2003 if ((execph & DATA_IN_PHASE) || (execph & DATA_OUT_PHASE)) {2004 unsigned int s_sacklen;2005 2006 s_sacklen = nsp32_read4(base, SAVED_SACK_CNT);2007 if ((execph & MSGIN_02_VALID) && (s_sacklen > 0)) {2008 nsp32_adjust_busfree(SCpnt, s_sacklen);2009 } else {2010 /* No need to rewrite SGT */2011 }2012 }2013 data->cur_lunt->msgin03 = FALSE;2014 2015 /* Update with the new value */2016 2017 /* reset SACK/SavedACK counter (or ALL clear?) */2018 nsp32_write4(base, CLR_COUNTER, CLRCOUNTER_ALLMASK);2019 2020 /*2021 * set new sg pointer2022 */2023 new_sgtp = data->cur_lunt->sglun_paddr +2024 (data->cur_lunt->cur_entry * sizeof(nsp32_sgtable));2025 nsp32_write4(base, SGT_ADR, new_sgtp);2026 2027 break;2028 2029 case SAVE_POINTERS:2030 /*2031 * These messages should not be occurred.2032 * They should be processed on AutoSCSI sequencer.2033 */2034 nsp32_msg (KERN_WARNING,2035 "unexpected message of AutoSCSI MsgIn: SAVE_POINTERS");2036 2037 break;2038 2039 case MESSAGE_REJECT:2040 /* If previous message_out is sending SDTR, and get2041 message_reject from target, SDTR negotiation is failed */2042 if (data->cur_target->sync_flag &2043 (SDTR_INITIATOR | SDTR_TARGET)) {2044 /*2045 * Current target is negotiating SDTR, but it's2046 * failed. Fall back to async transfer mode, and set2047 * SDTR_DONE.2048 */2049 nsp32_set_async(data, data->cur_target);2050 data->cur_target->sync_flag &= ~SDTR_INITIATOR;2051 data->cur_target->sync_flag |= SDTR_DONE;2052 2053 }2054 break;2055 2056 case LINKED_CMD_COMPLETE:2057 case LINKED_FLG_CMD_COMPLETE:2058 /* queue tag is not supported currently */2059 nsp32_msg (KERN_WARNING,2060 "unsupported message: 0x%x", msgtype);2061 break;2062 2063 case INITIATE_RECOVERY:2064 /* staring ECA (Extended Contingent Allegiance) state. */2065 /* This message is declined in SPI2 or later. */2066 2067 goto reject;2068 2069 /*2070 * 2-byte message2071 */2072 case SIMPLE_QUEUE_TAG:2073 case 0x23:2074 /*2075 * 0x23: Ignore_Wide_Residue is not declared in scsi.h.2076 * No support is needed.2077 */2078 if (data->msgin_len >= 1) {2079 goto reject;2080 }2081 2082 /* current position is 1-byte of 2 byte */2083 msgclear = FALSE;2084 2085 break;2086 2087 /*2088 * extended message2089 */2090 case EXTENDED_MESSAGE:2091 if (data->msgin_len < 1) {2092 /*2093 * Current position does not reach 2-byte2094 * (2-byte is extended message length).2095 */2096 msgclear = FALSE;2097 break;2098 }2099 2100 if ((data->msginbuf[1] + 1) > data->msgin_len) {2101 /*2102 * Current extended message has msginbuf[1] + 22103 * (msgin_len starts counting from 0, so buf[1] + 1).2104 * If current message position is not finished,2105 * continue receiving message.2106 */2107 msgclear = FALSE;2108 break;2109 }2110 2111 /*2112 * Reach here means regular length of each type of2113 * extended messages.2114 */2115 switch (data->msginbuf[2]) {2116 case EXTENDED_MODIFY_DATA_POINTER:2117 /* TODO */2118 goto reject; /* not implemented yet */2119 break;2120 2121 case EXTENDED_SDTR:2122 /*2123 * Exchange this message between initiator and target.2124 */2125 if (data->msgin_len != EXTENDED_SDTR_LEN + 1) {2126 /*2127 * received inappropriate message.2128 */2129 goto reject;2130 break;2131 }2132 2133 nsp32_analyze_sdtr(SCpnt);2134 2135 break;2136 2137 case EXTENDED_EXTENDED_IDENTIFY:2138 /* SCSI-I only, not supported. */2139 goto reject; /* not implemented yet */2140 2141 break;2142 2143 case EXTENDED_WDTR:2144 goto reject; /* not implemented yet */2145 2146 break;2147 2148 default:2149 goto reject;2150 }2151 break;2152 2153 default:2154 goto reject;2155 }2156 2157 restart:2158 if (msgclear == TRUE) {2159 data->msgin_len = 0;2160 2161 /*2162 * If restarting AutoSCSI, but there are some message to out2163 * (msgout_len > 0), set AutoATN, and set SCSIMSGOUT as 02164 * (MV_VALID = 0). When commandcontrol is written with2165 * AutoSCSI restart, at the same time MsgOutOccur should be2166 * happened (however, such situation is really possible...?).2167 */2168 if (data->msgout_len > 0) {2169 nsp32_write4(base, SCSI_MSG_OUT, 0);2170 command |= AUTO_ATN;2171 }2172 2173 /*2174 * restart AutoSCSI2175 * If it's failed, COMMANDCONTROL_AUTO_COMMAND_PHASE is needed.2176 */2177 command |= (AUTO_MSGIN_00_OR_04 | AUTO_MSGIN_02);2178 2179 /*2180 * If current msgin03 is TRUE, then flag on.2181 */2182 if (data->cur_lunt->msgin03 == TRUE) {2183 command |= AUTO_MSGIN_03;2184 }2185 data->cur_lunt->msgin03 = FALSE;2186 } else {2187 data->msgin_len++;2188 }2189 2190 /*2191 * restart AutoSCSI2192 */2193 nsp32_restart_autoscsi(SCpnt, command);2194 2195 /*2196 * wait SCSI REQ negate for REQ-ACK handshake2197 */2198 nsp32_wait_req(data, NEGATE);2199 2200 /*2201 * negate SCSI ACK2202 */2203 nsp32_sack_negate(data);2204 2205 nsp32_dbg(NSP32_DEBUG_MSGINOCCUR, "exit");2206 2207 return;2208 2209 reject:2210 nsp32_msg(KERN_WARNING,2211 "invalid or unsupported MessageIn, rejected. "2212 "current msg: 0x%x (len: 0x%x), processing msg: 0x%x",2213 msg, data->msgin_len, msgtype);2214 nsp32_build_reject(SCpnt);2215 data->msgin_len = 0;2216 2217 goto restart;2218}2219 2220/*2221 *2222 */2223static void nsp32_analyze_sdtr(struct scsi_cmnd *SCpnt)2224{2225 nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata;2226 nsp32_target *target = data->cur_target;2227 unsigned char get_period = data->msginbuf[3];2228 unsigned char get_offset = data->msginbuf[4];2229 int entry;2230 2231 nsp32_dbg(NSP32_DEBUG_MSGINOCCUR, "enter");2232 2233 /*2234 * If this inititor sent the SDTR message, then target responds SDTR,2235 * initiator SYNCREG, ACKWIDTH from SDTR parameter.2236 * Messages are not appropriate, then send back reject message.2237 * If initiator did not send the SDTR, but target sends SDTR,2238 * initiator calculator the appropriate parameter and send back SDTR.2239 */2240 if (target->sync_flag & SDTR_INITIATOR) {2241 /*2242 * Initiator sent SDTR, the target responds and2243 * send back negotiation SDTR.2244 */2245 nsp32_dbg(NSP32_DEBUG_MSGINOCCUR, "target responds SDTR");2246 2247 target->sync_flag &= ~SDTR_INITIATOR;2248 target->sync_flag |= SDTR_DONE;2249 2250 /*2251 * offset:2252 */2253 if (get_offset > SYNC_OFFSET) {2254 /*2255 * Negotiation is failed, the target send back2256 * unexpected offset value.2257 */2258 goto reject;2259 }2260 2261 if (get_offset == ASYNC_OFFSET) {2262 /*2263 * Negotiation is succeeded, the target want2264 * to fall back into asynchronous transfer mode.2265 */2266 goto async;2267 }2268 2269 /*2270 * period:2271 * Check whether sync period is too short. If too short,2272 * fall back to async mode. If it's ok, then investigate2273 * the received sync period. If sync period is acceptable2274 * between sync table start_period and end_period, then2275 * set this I_T nexus as sent offset and period.2276 * If it's not acceptable, send back reject and fall back2277 * to async mode.2278 */2279 if (get_period < data->synct[0].period_num) {2280 /*2281 * Negotiation is failed, the target send back2282 * unexpected period value.2283 */2284 goto reject;2285 }2286 2287 entry = nsp32_search_period_entry(data, target, get_period);2288 2289 if (entry < 0) {2290 /*2291 * Target want to use long period which is not2292 * acceptable NinjaSCSI-32Bi/UDE.2293 */2294 goto reject;2295 }2296 2297 /*2298 * Set new sync table and offset in this I_T nexus.2299 */2300 nsp32_set_sync_entry(data, target, entry, get_offset);2301 } else {2302 /* Target send SDTR to initiator. */2303 nsp32_dbg(NSP32_DEBUG_MSGINOCCUR, "target send SDTR");2304 2305 target->sync_flag |= SDTR_INITIATOR;2306 2307 /* offset: */2308 if (get_offset > SYNC_OFFSET) {2309 /* send back as SYNC_OFFSET */2310 get_offset = SYNC_OFFSET;2311 }2312 2313 /* period: */2314 if (get_period < data->synct[0].period_num) {2315 get_period = data->synct[0].period_num;2316 }2317 2318 entry = nsp32_search_period_entry(data, target, get_period);2319 2320 if (get_offset == ASYNC_OFFSET || entry < 0) {2321 nsp32_set_async(data, target);2322 nsp32_build_sdtr(SCpnt, 0, ASYNC_OFFSET);2323 } else {2324 nsp32_set_sync_entry(data, target, entry, get_offset);2325 nsp32_build_sdtr(SCpnt, get_period, get_offset);2326 }2327 }2328 2329 target->period = get_period;2330 nsp32_dbg(NSP32_DEBUG_MSGINOCCUR, "exit");2331 return;2332 2333 reject:2334 /*2335 * If the current message is unacceptable, send back to the target2336 * with reject message.2337 */2338 nsp32_build_reject(SCpnt);2339 2340 async:2341 nsp32_set_async(data, target); /* set as ASYNC transfer mode */2342 2343 target->period = 0;2344 nsp32_dbg(NSP32_DEBUG_MSGINOCCUR, "exit: set async");2345 return;2346}2347 2348 2349/*2350 * Search config entry number matched in sync_table from given2351 * target and speed period value. If failed to search, return negative value.2352 */2353static int nsp32_search_period_entry(nsp32_hw_data *data,2354 nsp32_target *target,2355 unsigned char period)2356{2357 int i;2358 2359 if (target->limit_entry >= data->syncnum) {2360 nsp32_msg(KERN_ERR, "limit_entry exceeds syncnum!");2361 target->limit_entry = 0;2362 }2363 2364 for (i = target->limit_entry; i < data->syncnum; i++) {2365 if (period >= data->synct[i].start_period &&2366 period <= data->synct[i].end_period) {2367 break;2368 }2369 }2370 2371 /*2372 * Check given period value is over the sync_table value.2373 * If so, return max value.2374 */2375 if (i == data->syncnum) {2376 i = -1;2377 }2378 2379 return i;2380}2381 2382 2383/*2384 * target <-> initiator use ASYNC transfer2385 */2386static void nsp32_set_async(nsp32_hw_data *data, nsp32_target *target)2387{2388 unsigned char period = data->synct[target->limit_entry].period_num;2389 2390 target->offset = ASYNC_OFFSET;2391 target->period = 0;2392 target->syncreg = TO_SYNCREG(period, ASYNC_OFFSET);2393 target->ackwidth = 0;2394 target->sample_reg = 0;2395 2396 nsp32_dbg(NSP32_DEBUG_SYNC, "set async");2397}2398 2399 2400/*2401 * target <-> initiator use maximum SYNC transfer2402 */2403static void nsp32_set_max_sync(nsp32_hw_data *data,2404 nsp32_target *target,2405 unsigned char *period,2406 unsigned char *offset)2407{2408 unsigned char period_num, ackwidth;2409 2410 period_num = data->synct[target->limit_entry].period_num;2411 *period = data->synct[target->limit_entry].start_period;2412 ackwidth = data->synct[target->limit_entry].ackwidth;2413 *offset = SYNC_OFFSET;2414 2415 target->syncreg = TO_SYNCREG(period_num, *offset);2416 target->ackwidth = ackwidth;2417 target->offset = *offset;2418 target->sample_reg = 0; /* disable SREQ sampling */2419}2420 2421 2422/*2423 * target <-> initiator use entry number speed2424 */2425static void nsp32_set_sync_entry(nsp32_hw_data *data,2426 nsp32_target *target,2427 int entry,2428 unsigned char offset)2429{2430 unsigned char period, ackwidth, sample_rate;2431 2432 period = data->synct[entry].period_num;2433 ackwidth = data->synct[entry].ackwidth;2434 sample_rate = data->synct[entry].sample_rate;2435 2436 target->syncreg = TO_SYNCREG(period, offset);2437 target->ackwidth = ackwidth;2438 target->offset = offset;2439 target->sample_reg = sample_rate | SAMPLING_ENABLE;2440 2441 nsp32_dbg(NSP32_DEBUG_SYNC, "set sync");2442}2443 2444 2445/*2446 * It waits until SCSI REQ becomes assertion or negation state.2447 *2448 * Note: If nsp32_msgin_occur is called, we asserts SCSI ACK. Then2449 * connected target responds SCSI REQ negation. We have to wait2450 * SCSI REQ becomes negation in order to negate SCSI ACK signal for2451 * REQ-ACK handshake.2452 */2453static void nsp32_wait_req(nsp32_hw_data *data, int state)2454{2455 unsigned int base = data->BaseAddress;2456 int wait_time = 0;2457 unsigned char bus, req_bit;2458 2459 if (!((state == ASSERT) || (state == NEGATE))) {2460 nsp32_msg(KERN_ERR, "unknown state designation");2461 }2462 /* REQ is BIT(5) */2463 req_bit = (state == ASSERT ? BUSMON_REQ : 0);2464 2465 do {2466 bus = nsp32_read1(base, SCSI_BUS_MONITOR);2467 if ((bus & BUSMON_REQ) == req_bit) {2468 nsp32_dbg(NSP32_DEBUG_WAIT,2469 "wait_time: %d", wait_time);2470 return;2471 }2472 udelay(1);2473 wait_time++;2474 } while (wait_time < REQSACK_TIMEOUT_TIME);2475 2476 nsp32_msg(KERN_WARNING, "wait REQ timeout, req_bit: 0x%x", req_bit);2477}2478 2479/*2480 * It waits until SCSI SACK becomes assertion or negation state.2481 */2482static void nsp32_wait_sack(nsp32_hw_data *data, int state)2483{2484 unsigned int base = data->BaseAddress;2485 int wait_time = 0;2486 unsigned char bus, ack_bit;2487 2488 if (!((state == ASSERT) || (state == NEGATE))) {2489 nsp32_msg(KERN_ERR, "unknown state designation");2490 }2491 /* ACK is BIT(4) */2492 ack_bit = (state == ASSERT ? BUSMON_ACK : 0);2493 2494 do {2495 bus = nsp32_read1(base, SCSI_BUS_MONITOR);2496 if ((bus & BUSMON_ACK) == ack_bit) {2497 nsp32_dbg(NSP32_DEBUG_WAIT,2498 "wait_time: %d", wait_time);2499 return;2500 }2501 udelay(1);2502 wait_time++;2503 } while (wait_time < REQSACK_TIMEOUT_TIME);2504 2505 nsp32_msg(KERN_WARNING, "wait SACK timeout, ack_bit: 0x%x", ack_bit);2506}2507 2508/*2509 * assert SCSI ACK2510 *2511 * Note: SCSI ACK assertion needs with ACKENB=1, AUTODIRECTION=1.2512 */2513static void nsp32_sack_assert(nsp32_hw_data *data)2514{2515 unsigned int base = data->BaseAddress;2516 unsigned char busctrl;2517 2518 busctrl = nsp32_read1(base, SCSI_BUS_CONTROL);2519 busctrl |= (BUSCTL_ACK | AUTODIRECTION | ACKENB);2520 nsp32_write1(base, SCSI_BUS_CONTROL, busctrl);2521}2522 2523/*2524 * negate SCSI ACK2525 */2526static void nsp32_sack_negate(nsp32_hw_data *data)2527{2528 unsigned int base = data->BaseAddress;2529 unsigned char busctrl;2530 2531 busctrl = nsp32_read1(base, SCSI_BUS_CONTROL);2532 busctrl &= ~BUSCTL_ACK;2533 nsp32_write1(base, SCSI_BUS_CONTROL, busctrl);2534}2535 2536 2537 2538/*2539 * Note: n_io_port is defined as 0x7f because I/O register port is2540 * assigned as:2541 * 0x800-0x8ff: memory mapped I/O port2542 * 0x900-0xbff: (map same 0x800-0x8ff I/O port image repeatedly)2543 * 0xc00-0xfff: CardBus status registers2544 */2545static int nsp32_detect(struct pci_dev *pdev)2546{2547 struct Scsi_Host *host; /* registered host structure */2548 struct resource *res;2549 nsp32_hw_data *data;2550 int ret;2551 int i, j;2552 2553 nsp32_dbg(NSP32_DEBUG_REGISTER, "enter");2554 2555 /*2556 * register this HBA as SCSI device2557 */2558 host = scsi_host_alloc(&nsp32_template, sizeof(nsp32_hw_data));2559 if (host == NULL) {2560 nsp32_msg (KERN_ERR, "failed to scsi register");2561 goto err;2562 }2563 2564 /*2565 * set nsp32_hw_data2566 */2567 data = (nsp32_hw_data *)host->hostdata;2568 2569 memcpy(data, &nsp32_data_base, sizeof(nsp32_hw_data));2570 2571 host->irq = data->IrqNumber;2572 host->io_port = data->BaseAddress;2573 host->unique_id = data->BaseAddress;2574 host->n_io_port = data->NumAddress;2575 host->base = (unsigned long)data->MmioAddress;2576 2577 data->Host = host;2578 spin_lock_init(&(data->Lock));2579 2580 data->cur_lunt = NULL;2581 data->cur_target = NULL;2582 2583 /*2584 * Bus master transfer mode is supported currently.2585 */2586 data->trans_method = NSP32_TRANSFER_BUSMASTER;2587 2588 /*2589 * Set clock div, CLOCK_4 (HBA has own external clock, and2590 * dividing * 100ns/4).2591 * Currently CLOCK_4 has only tested, not for CLOCK_2/PCICLK yet.2592 */2593 data->clock = CLOCK_4;2594 2595 /*2596 * Select appropriate nsp32_sync_table and set I_CLOCKDIV.2597 */2598 switch (data->clock) {2599 case CLOCK_4:2600 /* If data->clock is CLOCK_4, then select 40M sync table. */2601 data->synct = nsp32_sync_table_40M;2602 data->syncnum = ARRAY_SIZE(nsp32_sync_table_40M);2603 break;2604 case CLOCK_2:2605 /* If data->clock is CLOCK_2, then select 20M sync table. */2606 data->synct = nsp32_sync_table_20M;2607 data->syncnum = ARRAY_SIZE(nsp32_sync_table_20M);2608 break;2609 case PCICLK:2610 /* If data->clock is PCICLK, then select pci sync table. */2611 data->synct = nsp32_sync_table_pci;2612 data->syncnum = ARRAY_SIZE(nsp32_sync_table_pci);2613 break;2614 default:2615 nsp32_msg(KERN_WARNING,2616 "Invalid clock div is selected, set CLOCK_4.");2617 /* Use default value CLOCK_4 */2618 data->clock = CLOCK_4;2619 data->synct = nsp32_sync_table_40M;2620 data->syncnum = ARRAY_SIZE(nsp32_sync_table_40M);2621 }2622 2623 /*2624 * setup nsp32_lunt2625 */2626 2627 /*2628 * setup DMA2629 */2630 if (dma_set_mask(&pdev->dev, DMA_BIT_MASK(32)) != 0) {2631 nsp32_msg (KERN_ERR, "failed to set PCI DMA mask");2632 goto scsi_unregister;2633 }2634 2635 /*2636 * allocate autoparam DMA resource.2637 */2638 data->autoparam = dma_alloc_coherent(&pdev->dev,2639 sizeof(nsp32_autoparam), &(data->auto_paddr),2640 GFP_KERNEL);2641 if (data->autoparam == NULL) {2642 nsp32_msg(KERN_ERR, "failed to allocate DMA memory");2643 goto scsi_unregister;2644 }2645 2646 /*2647 * allocate scatter-gather DMA resource.2648 */2649 data->sg_list = dma_alloc_coherent(&pdev->dev, NSP32_SG_TABLE_SIZE,2650 &data->sg_paddr, GFP_KERNEL);2651 if (data->sg_list == NULL) {2652 nsp32_msg(KERN_ERR, "failed to allocate DMA memory");2653 goto free_autoparam;2654 }2655 2656 for (i = 0; i < ARRAY_SIZE(data->lunt); i++) {2657 for (j = 0; j < ARRAY_SIZE(data->lunt[0]); j++) {2658 int offset = i * ARRAY_SIZE(data->lunt[0]) + j;2659 nsp32_lunt tmp = {2660 .SCpnt = NULL,2661 .save_datp = 0,2662 .msgin03 = FALSE,2663 .sg_num = 0,2664 .cur_entry = 0,2665 .sglun = &(data->sg_list[offset]),2666 .sglun_paddr = data->sg_paddr + (offset * sizeof(nsp32_sglun)),2667 };2668 2669 data->lunt[i][j] = tmp;2670 }2671 }2672 2673 /*2674 * setup target2675 */2676 for (i = 0; i < ARRAY_SIZE(data->target); i++) {2677 nsp32_target *target = &(data->target[i]);2678 2679 target->limit_entry = 0;2680 target->sync_flag = 0;2681 nsp32_set_async(data, target);2682 }2683 2684 /*2685 * EEPROM check2686 */2687 ret = nsp32_getprom_param(data);2688 if (ret == FALSE) {2689 data->resettime = 3; /* default 3 */2690 }2691 2692 /*2693 * setup HBA2694 */2695 nsp32hw_init(data);2696 2697 snprintf(data->info_str, sizeof(data->info_str),2698 "NinjaSCSI-32Bi/UDE: irq %d, io 0x%lx+0x%x",2699 host->irq, host->io_port, host->n_io_port);2700 2701 /*2702 * SCSI bus reset2703 *2704 * Note: It's important to reset SCSI bus in initialization phase.2705 * NinjaSCSI-32Bi/UDE HBA EEPROM seems to exchange SDTR when2706 * system is coming up, so SCSI devices connected to HBA is set as2707 * un-asynchronous mode. It brings the merit that this HBA is2708 * ready to start synchronous transfer without any preparation,2709 * but we are difficult to control transfer speed. In addition,2710 * it prevents device transfer speed from effecting EEPROM start-up2711 * SDTR. NinjaSCSI-32Bi/UDE has the feature if EEPROM is set as2712 * Auto Mode, then FAST-10M is selected when SCSI devices are2713 * connected same or more than 4 devices. It should be avoided2714 * depending on this specification. Thus, resetting the SCSI bus2715 * restores all connected SCSI devices to asynchronous mode, then2716 * this driver set SDTR safely later, and we can control all SCSI2717 * device transfer mode.2718 */2719 nsp32_do_bus_reset(data);2720 2721 ret = request_irq(host->irq, do_nsp32_isr, IRQF_SHARED, "nsp32", data);2722 if (ret < 0) {2723 nsp32_msg(KERN_ERR, "Unable to allocate IRQ for NinjaSCSI32 "2724 "SCSI PCI controller. Interrupt: %d", host->irq);2725 goto free_sg_list;2726 }2727 2728 /*2729 * PCI IO register2730 */2731 res = request_region(host->io_port, host->n_io_port, "nsp32");2732 if (res == NULL) {2733 nsp32_msg(KERN_ERR,2734 "I/O region 0x%x+0x%x is already used",2735 data->BaseAddress, data->NumAddress);2736 goto free_irq;2737 }2738 2739 ret = scsi_add_host(host, &pdev->dev);2740 if (ret) {2741 nsp32_msg(KERN_ERR, "failed to add scsi host");2742 goto free_region;2743 }2744 scsi_scan_host(host);2745 pci_set_drvdata(pdev, host);2746 return 0;2747 2748 free_region:2749 release_region(host->io_port, host->n_io_port);2750 2751 free_irq:2752 free_irq(host->irq, data);2753 2754 free_sg_list:2755 dma_free_coherent(&pdev->dev, NSP32_SG_TABLE_SIZE,2756 data->sg_list, data->sg_paddr);2757 2758 free_autoparam:2759 dma_free_coherent(&pdev->dev, sizeof(nsp32_autoparam),2760 data->autoparam, data->auto_paddr);2761 2762 scsi_unregister:2763 scsi_host_put(host);2764 2765 err:2766 return 1;2767}2768 2769static int nsp32_release(struct Scsi_Host *host)2770{2771 nsp32_hw_data *data = (nsp32_hw_data *)host->hostdata;2772 2773 if (data->autoparam) {2774 dma_free_coherent(&data->Pci->dev, sizeof(nsp32_autoparam),2775 data->autoparam, data->auto_paddr);2776 }2777 2778 if (data->sg_list) {2779 dma_free_coherent(&data->Pci->dev, NSP32_SG_TABLE_SIZE,2780 data->sg_list, data->sg_paddr);2781 }2782 2783 if (host->irq) {2784 free_irq(host->irq, data);2785 }2786 2787 if (host->io_port && host->n_io_port) {2788 release_region(host->io_port, host->n_io_port);2789 }2790 2791 if (data->MmioAddress) {2792 iounmap(data->MmioAddress);2793 }2794 2795 return 0;2796}2797 2798static const char *nsp32_info(struct Scsi_Host *shpnt)2799{2800 nsp32_hw_data *data = (nsp32_hw_data *)shpnt->hostdata;2801 2802 return data->info_str;2803}2804 2805 2806/****************************************************************************2807 * error handler2808 */2809static int nsp32_eh_abort(struct scsi_cmnd *SCpnt)2810{2811 nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata;2812 unsigned int base = SCpnt->device->host->io_port;2813 2814 nsp32_msg(KERN_WARNING, "abort");2815 2816 if (data->cur_lunt->SCpnt == NULL) {2817 nsp32_dbg(NSP32_DEBUG_BUSRESET, "abort failed");2818 return FAILED;2819 }2820 2821 if (data->cur_target->sync_flag & (SDTR_INITIATOR | SDTR_TARGET)) {2822 /* reset SDTR negotiation */2823 data->cur_target->sync_flag = 0;2824 nsp32_set_async(data, data->cur_target);2825 }2826 2827 nsp32_write2(base, TRANSFER_CONTROL, 0);2828 nsp32_write2(base, BM_CNT, 0);2829 2830 SCpnt->result = DID_ABORT << 16;2831 nsp32_scsi_done(SCpnt);2832 2833 nsp32_dbg(NSP32_DEBUG_BUSRESET, "abort success");2834 return SUCCESS;2835}2836 2837static void nsp32_do_bus_reset(nsp32_hw_data *data)2838{2839 unsigned int base = data->BaseAddress;2840 int i;2841 unsigned short __maybe_unused intrdat;2842 2843 nsp32_dbg(NSP32_DEBUG_BUSRESET, "in");2844 2845 /*2846 * stop all transfer2847 * clear TRANSFERCONTROL_BM_START2848 * clear counter2849 */2850 nsp32_write2(base, TRANSFER_CONTROL, 0);2851 nsp32_write4(base, BM_CNT, 0);2852 nsp32_write4(base, CLR_COUNTER, CLRCOUNTER_ALLMASK);2853 2854 /*2855 * fall back to asynchronous transfer mode2856 * initialize SDTR negotiation flag2857 */2858 for (i = 0; i < ARRAY_SIZE(data->target); i++) {2859 nsp32_target *target = &data->target[i];2860 2861 target->sync_flag = 0;2862 nsp32_set_async(data, target);2863 }2864 2865 /*2866 * reset SCSI bus2867 */2868 nsp32_write1(base, SCSI_BUS_CONTROL, BUSCTL_RST);2869 mdelay(RESET_HOLD_TIME / 1000);2870 nsp32_write1(base, SCSI_BUS_CONTROL, 0);2871 for(i = 0; i < 5; i++) {2872 intrdat = nsp32_read2(base, IRQ_STATUS); /* dummy read */2873 nsp32_dbg(NSP32_DEBUG_BUSRESET, "irq:1: 0x%x", intrdat);2874 }2875 2876 data->CurrentSC = NULL;2877}2878 2879static int nsp32_eh_host_reset(struct scsi_cmnd *SCpnt)2880{2881 struct Scsi_Host *host = SCpnt->device->host;2882 unsigned int base = SCpnt->device->host->io_port;2883 nsp32_hw_data *data = (nsp32_hw_data *)host->hostdata;2884 2885 nsp32_msg(KERN_INFO, "Host Reset");2886 nsp32_dbg(NSP32_DEBUG_BUSRESET, "SCpnt=0x%x", SCpnt);2887 2888 spin_lock_irq(SCpnt->device->host->host_lock);2889 2890 nsp32hw_init(data);2891 nsp32_write2(base, IRQ_CONTROL, IRQ_CONTROL_ALL_IRQ_MASK);2892 nsp32_do_bus_reset(data);2893 nsp32_write2(base, IRQ_CONTROL, 0);2894 2895 spin_unlock_irq(SCpnt->device->host->host_lock);2896 return SUCCESS; /* Host reset is succeeded at any time. */2897}2898 2899 2900/**************************************************************************2901 * EEPROM handler2902 */2903 2904/*2905 * getting EEPROM parameter2906 */2907static int nsp32_getprom_param(nsp32_hw_data *data)2908{2909 int vendor = data->pci_devid->vendor;2910 int device = data->pci_devid->device;2911 int ret, i;2912 int __maybe_unused val;2913 2914 /*2915 * EEPROM checking.2916 */2917 ret = nsp32_prom_read(data, 0x7e);2918 if (ret != 0x55) {2919 nsp32_msg(KERN_INFO, "No EEPROM detected: 0x%x", ret);2920 return FALSE;2921 }2922 ret = nsp32_prom_read(data, 0x7f);2923 if (ret != 0xaa) {2924 nsp32_msg(KERN_INFO, "Invalid number: 0x%x", ret);2925 return FALSE;2926 }2927 2928 /*2929 * check EEPROM type2930 */2931 if (vendor == PCI_VENDOR_ID_WORKBIT &&2932 device == PCI_DEVICE_ID_WORKBIT_STANDARD) {2933 ret = nsp32_getprom_c16(data);2934 } else if (vendor == PCI_VENDOR_ID_WORKBIT &&2935 device == PCI_DEVICE_ID_NINJASCSI_32BIB_LOGITEC) {2936 ret = nsp32_getprom_at24(data);2937 } else if (vendor == PCI_VENDOR_ID_WORKBIT &&2938 device == PCI_DEVICE_ID_NINJASCSI_32UDE_MELCO ) {2939 ret = nsp32_getprom_at24(data);2940 } else {2941 nsp32_msg(KERN_WARNING, "Unknown EEPROM");2942 ret = FALSE;2943 }2944 2945 /* for debug : SPROM data full checking */2946 for (i = 0; i <= 0x1f; i++) {2947 val = nsp32_prom_read(data, i);2948 nsp32_dbg(NSP32_DEBUG_EEPROM,2949 "rom address 0x%x : 0x%x", i, val);2950 }2951 2952 return ret;2953}2954 2955 2956/*2957 * AT24C01A (Logitec: LHA-600S), AT24C02 (Melco Buffalo: IFC-USLP) data map:2958 *2959 * ROMADDR2960 * 0x00 - 0x06 : Device Synchronous Transfer Period (SCSI ID 0 - 6)2961 * Value 0x0: ASYNC, 0x0c: Ultra-20M, 0x19: Fast-10M2962 * 0x07 : HBA Synchronous Transfer Period2963 * Value 0: AutoSync, 1: Manual Setting2964 * 0x08 - 0x0f : Not Used? (0x0)2965 * 0x10 : Bus Termination2966 * Value 0: Auto[ON], 1: ON, 2: OFF2967 * 0x11 : Not Used? (0)2968 * 0x12 : Bus Reset Delay Time (0x03)2969 * 0x13 : Bootable CD Support2970 * Value 0: Disable, 1: Enable2971 * 0x14 : Device Scan2972 * Bit 7 6 5 4 3 2 1 02973 * | <----------------->2974 * | SCSI ID: Value 0: Skip, 1: YES2975 * |-> Value 0: ALL scan, Value 1: Manual2976 * 0x15 - 0x1b : Not Used? (0)2977 * 0x1c : Constant? (0x01) (clock div?)2978 * 0x1d - 0x7c : Not Used (0xff)2979 * 0x7d : Not Used? (0xff)2980 * 0x7e : Constant (0x55), Validity signature2981 * 0x7f : Constant (0xaa), Validity signature2982 */2983static int nsp32_getprom_at24(nsp32_hw_data *data)2984{2985 int ret, i;2986 int auto_sync;2987 nsp32_target *target;2988 int entry;2989 2990 /*2991 * Reset time which is designated by EEPROM.2992 *2993 * TODO: Not used yet.2994 */2995 data->resettime = nsp32_prom_read(data, 0x12);2996 2997 /*2998 * HBA Synchronous Transfer Period2999 *3000 * Note: auto_sync = 0: auto, 1: manual. Ninja SCSI HBA spec says3001 * that if auto_sync is 0 (auto), and connected SCSI devices are3002 * same or lower than 3, then transfer speed is set as ULTRA-20M.3003 * On the contrary if connected SCSI devices are same or higher3004 * than 4, then transfer speed is set as FAST-10M.3005 *3006 * I break this rule. The number of connected SCSI devices are3007 * only ignored. If auto_sync is 0 (auto), then transfer speed is3008 * forced as ULTRA-20M.3009 */3010 ret = nsp32_prom_read(data, 0x07);3011 switch (ret) {3012 case 0:3013 auto_sync = TRUE;3014 break;3015 case 1:3016 auto_sync = FALSE;3017 break;3018 default:3019 nsp32_msg(KERN_WARNING,3020 "Unsupported Auto Sync mode. Fall back to manual mode.");3021 auto_sync = TRUE;3022 }3023 3024 if (trans_mode == ULTRA20M_MODE) {3025 auto_sync = TRUE;3026 }3027 3028 /*3029 * each device Synchronous Transfer Period3030 */3031 for (i = 0; i < NSP32_HOST_SCSIID; i++) {3032 target = &data->target[i];3033 if (auto_sync == TRUE) {3034 target->limit_entry = 0; /* set as ULTRA20M */3035 } else {3036 ret = nsp32_prom_read(data, i);3037 entry = nsp32_search_period_entry(data, target, ret);3038 if (entry < 0) {3039 /* search failed... set maximum speed */3040 entry = 0;3041 }3042 target->limit_entry = entry;3043 }3044 }3045 3046 return TRUE;3047}3048 3049 3050/*3051 * C16 110 (I-O Data: SC-NBD) data map:3052 *3053 * ROMADDR3054 * 0x00 - 0x06 : Device Synchronous Transfer Period (SCSI ID 0 - 6)3055 * Value 0x0: 20MB/S, 0x1: 10MB/S, 0x2: 5MB/S, 0x3: ASYNC3056 * 0x07 : 0 (HBA Synchronous Transfer Period: Auto Sync)3057 * 0x08 - 0x0f : Not Used? (0x0)3058 * 0x10 : Transfer Mode3059 * Value 0: PIO, 1: Busmater3060 * 0x11 : Bus Reset Delay Time (0x00-0x20)3061 * 0x12 : Bus Termination3062 * Value 0: Disable, 1: Enable3063 * 0x13 - 0x19 : Disconnection3064 * Value 0: Disable, 1: Enable3065 * 0x1a - 0x7c : Not Used? (0)3066 * 0x7d : Not Used? (0xf8)3067 * 0x7e : Constant (0x55), Validity signature3068 * 0x7f : Constant (0xaa), Validity signature3069 */3070static int nsp32_getprom_c16(nsp32_hw_data *data)3071{3072 int ret, i;3073 nsp32_target *target;3074 int entry, val;3075 3076 /*3077 * Reset time which is designated by EEPROM.3078 *3079 * TODO: Not used yet.3080 */3081 data->resettime = nsp32_prom_read(data, 0x11);3082 3083 /*3084 * each device Synchronous Transfer Period3085 */3086 for (i = 0; i < NSP32_HOST_SCSIID; i++) {3087 target = &data->target[i];3088 ret = nsp32_prom_read(data, i);3089 switch (ret) {3090 case 0: /* 20MB/s */3091 val = 0x0c;3092 break;3093 case 1: /* 10MB/s */3094 val = 0x19;3095 break;3096 case 2: /* 5MB/s */3097 val = 0x32;3098 break;3099 case 3: /* ASYNC */3100 val = 0x00;3101 break;3102 default: /* default 20MB/s */3103 val = 0x0c;3104 break;3105 }3106 entry = nsp32_search_period_entry(data, target, val);3107 if (entry < 0 || trans_mode == ULTRA20M_MODE) {3108 /* search failed... set maximum speed */3109 entry = 0;3110 }3111 target->limit_entry = entry;3112 }3113 3114 return TRUE;3115}3116 3117 3118/*3119 * Atmel AT24C01A (drived in 5V) serial EEPROM routines3120 */3121static int nsp32_prom_read(nsp32_hw_data *data, int romaddr)3122{3123 int i, val;3124 3125 /* start condition */3126 nsp32_prom_start(data);3127 3128 /* device address */3129 nsp32_prom_write_bit(data, 1); /* 1 */3130 nsp32_prom_write_bit(data, 0); /* 0 */3131 nsp32_prom_write_bit(data, 1); /* 1 */3132 nsp32_prom_write_bit(data, 0); /* 0 */3133 nsp32_prom_write_bit(data, 0); /* A2: 0 (GND) */3134 nsp32_prom_write_bit(data, 0); /* A1: 0 (GND) */3135 nsp32_prom_write_bit(data, 0); /* A0: 0 (GND) */3136 3137 /* R/W: W for dummy write */3138 nsp32_prom_write_bit(data, 0);3139 3140 /* ack */3141 nsp32_prom_write_bit(data, 0);3142 3143 /* word address */3144 for (i = 7; i >= 0; i--) {3145 nsp32_prom_write_bit(data, ((romaddr >> i) & 1));3146 }3147 3148 /* ack */3149 nsp32_prom_write_bit(data, 0);3150 3151 /* start condition */3152 nsp32_prom_start(data);3153 3154 /* device address */3155 nsp32_prom_write_bit(data, 1); /* 1 */3156 nsp32_prom_write_bit(data, 0); /* 0 */3157 nsp32_prom_write_bit(data, 1); /* 1 */3158 nsp32_prom_write_bit(data, 0); /* 0 */3159 nsp32_prom_write_bit(data, 0); /* A2: 0 (GND) */3160 nsp32_prom_write_bit(data, 0); /* A1: 0 (GND) */3161 nsp32_prom_write_bit(data, 0); /* A0: 0 (GND) */3162 3163 /* R/W: R */3164 nsp32_prom_write_bit(data, 1);3165 3166 /* ack */3167 nsp32_prom_write_bit(data, 0);3168 3169 /* data... */3170 val = 0;3171 for (i = 7; i >= 0; i--) {3172 val += (nsp32_prom_read_bit(data) << i);3173 }3174 3175 /* no ack */3176 nsp32_prom_write_bit(data, 1);3177 3178 /* stop condition */3179 nsp32_prom_stop(data);3180 3181 return val;3182}3183 3184static void nsp32_prom_set(nsp32_hw_data *data, int bit, int val)3185{3186 int base = data->BaseAddress;3187 int tmp;3188 3189 tmp = nsp32_index_read1(base, SERIAL_ROM_CTL);3190 3191 if (val == 0) {3192 tmp &= ~bit;3193 } else {3194 tmp |= bit;3195 }3196 3197 nsp32_index_write1(base, SERIAL_ROM_CTL, tmp);3198 3199 udelay(10);3200}3201 3202static int nsp32_prom_get(nsp32_hw_data *data, int bit)3203{3204 int base = data->BaseAddress;3205 int tmp, ret;3206 3207 if (bit != SDA) {3208 nsp32_msg(KERN_ERR, "return value is not appropriate");3209 return 0;3210 }3211 3212 3213 tmp = nsp32_index_read1(base, SERIAL_ROM_CTL) & bit;3214 3215 if (tmp == 0) {3216 ret = 0;3217 } else {3218 ret = 1;3219 }3220 3221 udelay(10);3222 3223 return ret;3224}3225 3226static void nsp32_prom_start (nsp32_hw_data *data)3227{3228 /* start condition */3229 nsp32_prom_set(data, SCL, 1);3230 nsp32_prom_set(data, SDA, 1);3231 nsp32_prom_set(data, ENA, 1); /* output mode */3232 nsp32_prom_set(data, SDA, 0); /* keeping SCL=1 and transiting3233 * SDA 1->0 is start condition */3234 nsp32_prom_set(data, SCL, 0);3235}3236 3237static void nsp32_prom_stop (nsp32_hw_data *data)3238{3239 /* stop condition */3240 nsp32_prom_set(data, SCL, 1);3241 nsp32_prom_set(data, SDA, 0);3242 nsp32_prom_set(data, ENA, 1); /* output mode */3243 nsp32_prom_set(data, SDA, 1);3244 nsp32_prom_set(data, SCL, 0);3245}3246 3247static void nsp32_prom_write_bit(nsp32_hw_data *data, int val)3248{3249 /* write */3250 nsp32_prom_set(data, SDA, val);3251 nsp32_prom_set(data, SCL, 1 );3252 nsp32_prom_set(data, SCL, 0 );3253}3254 3255static int nsp32_prom_read_bit(nsp32_hw_data *data)3256{3257 int val;3258 3259 /* read */3260 nsp32_prom_set(data, ENA, 0); /* input mode */3261 nsp32_prom_set(data, SCL, 1);3262 3263 val = nsp32_prom_get(data, SDA);3264 3265 nsp32_prom_set(data, SCL, 0);3266 nsp32_prom_set(data, ENA, 1); /* output mode */3267 3268 return val;3269}3270 3271 3272/**************************************************************************3273 * Power Management3274 */3275#ifdef CONFIG_PM3276 3277/* Device suspended */3278static int nsp32_suspend(struct pci_dev *pdev, pm_message_t state)3279{3280 struct Scsi_Host *host = pci_get_drvdata(pdev);3281 3282 nsp32_msg(KERN_INFO, "pci-suspend: pdev=0x%p, state.event=%x, slot=%s, host=0x%p",3283 pdev, state.event, pci_name(pdev), host);3284 3285 pci_save_state (pdev);3286 pci_disable_device (pdev);3287 pci_set_power_state(pdev, pci_choose_state(pdev, state));3288 3289 return 0;3290}3291 3292/* Device woken up */3293static int nsp32_resume(struct pci_dev *pdev)3294{3295 struct Scsi_Host *host = pci_get_drvdata(pdev);3296 nsp32_hw_data *data = (nsp32_hw_data *)host->hostdata;3297 unsigned short reg;3298 3299 nsp32_msg(KERN_INFO, "pci-resume: pdev=0x%p, slot=%s, host=0x%p",3300 pdev, pci_name(pdev), host);3301 3302 pci_set_power_state(pdev, PCI_D0);3303 pci_enable_wake (pdev, PCI_D0, 0);3304 pci_restore_state (pdev);3305 3306 reg = nsp32_read2(data->BaseAddress, INDEX_REG);3307 3308 nsp32_msg(KERN_INFO, "io=0x%x reg=0x%x", data->BaseAddress, reg);3309 3310 if (reg == 0xffff) {3311 nsp32_msg(KERN_INFO, "missing device. abort resume.");3312 return 0;3313 }3314 3315 nsp32hw_init (data);3316 nsp32_do_bus_reset(data);3317 3318 nsp32_msg(KERN_INFO, "resume success");3319 3320 return 0;3321}3322 3323#endif3324 3325/************************************************************************3326 * PCI/Cardbus probe/remove routine3327 */3328static int nsp32_probe(struct pci_dev *pdev, const struct pci_device_id *id)3329{3330 int ret;3331 nsp32_hw_data *data = &nsp32_data_base;3332 3333 nsp32_dbg(NSP32_DEBUG_REGISTER, "enter");3334 3335 ret = pci_enable_device(pdev);3336 if (ret) {3337 nsp32_msg(KERN_ERR, "failed to enable pci device");3338 return ret;3339 }3340 3341 data->Pci = pdev;3342 data->pci_devid = id;3343 data->IrqNumber = pdev->irq;3344 data->BaseAddress = pci_resource_start(pdev, 0);3345 data->NumAddress = pci_resource_len (pdev, 0);3346 data->MmioAddress = pci_ioremap_bar(pdev, 1);3347 data->MmioLength = pci_resource_len (pdev, 1);3348 3349 pci_set_master(pdev);3350 3351 ret = nsp32_detect(pdev);3352 3353 nsp32_msg(KERN_INFO, "irq: %i mmio: %p+0x%lx slot: %s model: %s",3354 pdev->irq,3355 data->MmioAddress, data->MmioLength,3356 pci_name(pdev),3357 nsp32_model[id->driver_data]);3358 3359 nsp32_dbg(NSP32_DEBUG_REGISTER, "exit %d", ret);3360 3361 return ret;3362}3363 3364static void nsp32_remove(struct pci_dev *pdev)3365{3366 struct Scsi_Host *host = pci_get_drvdata(pdev);3367 3368 nsp32_dbg(NSP32_DEBUG_REGISTER, "enter");3369 3370 scsi_remove_host(host);3371 3372 nsp32_release(host);3373 3374 scsi_host_put(host);3375}3376 3377static struct pci_driver nsp32_driver = {3378 .name = "nsp32",3379 .id_table = nsp32_pci_table,3380 .probe = nsp32_probe,3381 .remove = nsp32_remove,3382#ifdef CONFIG_PM3383 .suspend = nsp32_suspend,3384 .resume = nsp32_resume,3385#endif3386};3387 3388/*********************************************************************3389 * Moule entry point3390 */3391static int __init init_nsp32(void) {3392 nsp32_msg(KERN_INFO, "loading...");3393 return pci_register_driver(&nsp32_driver);3394}3395 3396static void __exit exit_nsp32(void) {3397 nsp32_msg(KERN_INFO, "unloading...");3398 pci_unregister_driver(&nsp32_driver);3399}3400 3401module_init(init_nsp32);3402module_exit(exit_nsp32);3403 3404/* end */3405