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1.1 ! root 1: /* ! 2: * u14-34f.c - Low-level driver for UltraStor 14F/34F SCSI host adapters. ! 3: * ! 4: * 13 Jun 1995 rev. 2.01 for linux 1.2.10 ! 5: * HAVE_OLD_UX4F_FIRMWARE should be defined for U34F boards when ! 6: * the firmware prom is not the lastest one (28008-006). ! 7: * ! 8: * 11 Mar 1995 rev. 2.00 for linux 1.2.0 ! 9: * Fixed a bug which prevented media change detection for removable ! 10: * disk drives. ! 11: * ! 12: * 23 Feb 1995 rev. 1.18 for linux 1.1.94 ! 13: * Added a check for scsi_register returning NULL. ! 14: * ! 15: * 11 Feb 1995 rev. 1.17 for linux 1.1.91 ! 16: * U14F qualified to run with 32 sglists. ! 17: * Now DEBUG_RESET is disabled by default. ! 18: * ! 19: * 9 Feb 1995 rev. 1.16 for linux 1.1.90 ! 20: * Use host->wish_block instead of host->block. ! 21: * ! 22: * 8 Feb 1995 rev. 1.15 for linux 1.1.89 ! 23: * Cleared target_time_out counter while performing a reset. ! 24: * ! 25: * 28 Jan 1995 rev. 1.14 for linux 1.1.86 ! 26: * Added module support. ! 27: * Log and do a retry when a disk drive returns a target status ! 28: * different from zero on a recovered error. ! 29: * Auto detects if U14F boards have an old firmware revision. ! 30: * Max number of scatter/gather lists set to 16 for all boards ! 31: * (most installation run fine using 33 sglists, while other ! 32: * has problems when using more then 16). ! 33: * ! 34: * 16 Jan 1995 rev. 1.13 for linux 1.1.81 ! 35: * Display a message if check_region detects a port address ! 36: * already in use. ! 37: * ! 38: * 15 Dec 1994 rev. 1.12 for linux 1.1.74 ! 39: * The host->block flag is set for all the detected ISA boards. ! 40: * ! 41: * 30 Nov 1994 rev. 1.11 for linux 1.1.68 ! 42: * Redo i/o on target status CHECK_CONDITION for TYPE_DISK only. ! 43: * Added optional support for using a single board at a time. ! 44: * ! 45: * 14 Nov 1994 rev. 1.10 for linux 1.1.63 ! 46: * ! 47: * 28 Oct 1994 rev. 1.09 for linux 1.1.58 Final BETA release. ! 48: * 16 Jul 1994 rev. 1.00 for linux 1.1.29 Initial ALPHA release. ! 49: * ! 50: * This driver is a total replacement of the original UltraStor ! 51: * scsi driver, but it supports ONLY the 14F and 34F boards. ! 52: * It can be configured in the same kernel in which the original ! 53: * ultrastor driver is configured to allow the original U24F ! 54: * support. ! 55: * ! 56: * Multiple U14F and/or U34F host adapters are supported. ! 57: * ! 58: * Copyright (C) 1994, 1995 Dario Ballabio ([email protected]) ! 59: * ! 60: * WARNING: if your 14/34F board has an old firmware revision (see below) ! 61: * you must change "#undef" into "#define" in the following ! 62: * statement. ! 63: */ ! 64: #undef HAVE_OLD_UX4F_FIRMWARE ! 65: /* ! 66: * The UltraStor 14F, 24F, and 34F are a family of intelligent, high ! 67: * performance SCSI-2 host adapters. ! 68: * Here is the scoop on the various models: ! 69: * ! 70: * 14F - ISA first-party DMA HA with floppy support and WD1003 emulation. ! 71: * 24F - EISA Bus Master HA with floppy support and WD1003 emulation. ! 72: * 34F - VESA Local-Bus Bus Master HA (no WD1003 emulation). ! 73: * ! 74: * This code has been tested with up to two U14F boards, using both ! 75: * firmware 28004-005/38004-004 (BIOS rev. 2.00) and the latest firmware ! 76: * 28004-006/38004-005 (BIOS rev. 2.01). ! 77: * ! 78: * The latest firmware is required in order to get reliable operations when ! 79: * clustering is enabled. ENABLE_CLUSTERING provides a performance increase ! 80: * up to 50% on sequential access. ! 81: * ! 82: * Since the Scsi_Host_Template structure is shared among all 14F and 34F, ! 83: * the last setting of use_clustering is in effect for all of these boards. ! 84: * ! 85: * Here a sample configuration using two U14F boards: ! 86: * ! 87: U14F0: PORT 0x330, BIOS 0xc8000, IRQ 11, DMA 5, SG 32, Mbox 16, CmdLun 2, C1. ! 88: U14F1: PORT 0x340, BIOS 0x00000, IRQ 10, DMA 6, SG 32, Mbox 16, CmdLun 2, C1. ! 89: * ! 90: * The boot controller must have its BIOS enabled, while other boards can ! 91: * have their BIOS disabled, or enabled to an higher address. ! 92: * Boards are named Ux4F0, Ux4F1..., according to the port address order in ! 93: * the io_port[] array. ! 94: * ! 95: * The following facts are based on real testing results (not on ! 96: * documentation) on the above U14F board. ! 97: * ! 98: * - The U14F board should be jumpered for bus on time less or equal to 7 ! 99: * microseconds, while the default is 11 microseconds. This is order to ! 100: * get acceptable performance while using floppy drive and hard disk ! 101: * together. The jumpering for 7 microseconds is: JP13 pin 15-16, ! 102: * JP14 pin 7-8 and pin 9-10. ! 103: * The reduction has a little impact on scsi performance. ! 104: * ! 105: * - If scsi bus length exceeds 3m., the scsi bus speed needs to be reduced ! 106: * from 10Mhz to 5Mhz (do this by inserting a jumper on JP13 pin 7-8). ! 107: * ! 108: * - If U14F on board firmware is older than 28004-006/38004-005, ! 109: * the U14F board is unable to provide reliable operations if the scsi ! 110: * request length exceeds 16Kbyte. When this length is exceeded the ! 111: * behavior is: ! 112: * - adapter_status equal 0x96 or 0xa3 or 0x93 or 0x94; ! 113: * - adapter_status equal 0 and target_status equal 2 on for all targets ! 114: * in the next operation following the reset. ! 115: * This sequence takes a long time (>3 seconds), so in the meantime ! 116: * the SD_TIMEOUT in sd.c could expire giving rise to scsi aborts ! 117: * (SD_TIMEOUT has been increased from 3 to 6 seconds in 1.1.31). ! 118: * Because of this I had to DISABLE_CLUSTERING and to work around the ! 119: * bus reset in the interrupt service routine, returning DID_BUS_BUSY ! 120: * so that the operations are retried without complains from the scsi.c ! 121: * code. ! 122: * Any reset of the scsi bus is going to kill tape operations, since ! 123: * no retry is allowed for tapes. Bus resets are more likely when the ! 124: * scsi bus is under heavy load. ! 125: * Requests using scatter/gather have a maximum length of 16 x 1024 bytes ! 126: * when DISABLE_CLUSTERING is in effect, but unscattered requests could be ! 127: * larger than 16Kbyte. ! 128: * ! 129: * The new firmware has fixed all the above problems. ! 130: * ! 131: * For U34F boards the latest bios prom is 38008-002 (BIOS rev. 2.01), ! 132: * the latest firmware prom is 28008-006. Older firmware 28008-005 has ! 133: * problems when using more then 16 scatter/gather lists. ! 134: * ! 135: * In order to support multiple ISA boards in a reliable way, ! 136: * the driver sets host->wish_block = TRUE for all ISA boards. ! 137: */ ! 138: ! 139: #if defined(MODULE) ! 140: #include <linux/module.h> ! 141: #include <linux/version.h> ! 142: #endif ! 143: ! 144: #include <linux/string.h> ! 145: #include <linux/sched.h> ! 146: #include <linux/kernel.h> ! 147: #include <linux/ioport.h> ! 148: #include <asm/io.h> ! 149: #include <asm/system.h> ! 150: #include <linux/proc_fs.h> ! 151: #include <linux/blk.h> ! 152: #include "scsi.h" ! 153: #include "hosts.h" ! 154: #include "sd.h" ! 155: #include <asm/dma.h> ! 156: #include <asm/irq.h> ! 157: #include "u14-34f.h" ! 158: #include<linux/stat.h> ! 159: ! 160: struct proc_dir_entry proc_scsi_u14_34f = { ! 161: PROC_SCSI_U14_34F, 6, "u14_34f", ! 162: S_IFDIR | S_IRUGO | S_IXUGO, 2 ! 163: }; ! 164: ! 165: /* Values for the PRODUCT_ID ports for the 14/34F */ ! 166: #define PRODUCT_ID1 0x56 ! 167: #define PRODUCT_ID2 0x40 /* NOTE: Only upper nibble is used */ ! 168: ! 169: /* Subversion values */ ! 170: #define ISA 0 ! 171: #define ESA 1 ! 172: ! 173: #define OP_HOST_ADAPTER 0x1 ! 174: #define OP_SCSI 0x2 ! 175: #define OP_RESET 0x4 ! 176: #define DTD_SCSI 0x0 ! 177: #define DTD_IN 0x1 ! 178: #define DTD_OUT 0x2 ! 179: #define DTD_NONE 0x3 ! 180: #define HA_CMD_INQUIRY 0x1 ! 181: #define HA_CMD_SELF_DIAG 0x2 ! 182: #define HA_CMD_READ_BUFF 0x3 ! 183: #define HA_CMD_WRITE_BUFF 0x4 ! 184: ! 185: #undef DEBUG_DETECT ! 186: #undef DEBUG_INTERRUPT ! 187: #undef DEBUG_STATISTICS ! 188: #undef DEBUG_RESET ! 189: ! 190: #define MAX_TARGET 8 ! 191: #define MAX_IRQ 16 ! 192: #define MAX_BOARDS 4 ! 193: #define MAX_MAILBOXES 16 ! 194: #define MAX_SGLIST 32 ! 195: #define MAX_SAFE_SGLIST 16 ! 196: #define MAX_CMD_PER_LUN 2 ! 197: ! 198: #define FALSE 0 ! 199: #define TRUE 1 ! 200: #define FREE 0 ! 201: #define IN_USE 1 ! 202: #define LOCKED 2 ! 203: #define IN_RESET 3 ! 204: #define IGNORE 4 ! 205: #define NO_IRQ 0xff ! 206: #define NO_DMA 0xff ! 207: #define MAXLOOP 200000 ! 208: ! 209: #define REG_LCL_MASK 0 ! 210: #define REG_LCL_INTR 1 ! 211: #define REG_SYS_MASK 2 ! 212: #define REG_SYS_INTR 3 ! 213: #define REG_PRODUCT_ID1 4 ! 214: #define REG_PRODUCT_ID2 5 ! 215: #define REG_CONFIG1 6 ! 216: #define REG_CONFIG2 7 ! 217: #define REG_OGM 8 ! 218: #define REG_ICM 12 ! 219: #define REGION_SIZE 13 ! 220: #define BSY_ASSERTED 0x01 ! 221: #define IRQ_ASSERTED 0x01 ! 222: #define CMD_RESET 0xc0 ! 223: #define CMD_OGM_INTR 0x01 ! 224: #define CMD_CLR_INTR 0x01 ! 225: #define CMD_ENA_INTR 0x81 ! 226: #define ASOK 0x00 ! 227: #define ASST 0x91 ! 228: ! 229: #define PACKED __attribute__((packed)) ! 230: ! 231: /* MailBox SCSI Command Packet */ ! 232: struct mscp { ! 233: unsigned char opcode: 3; /* type of command */ ! 234: unsigned char xdir: 2; /* data transfer direction */ ! 235: unsigned char dcn: 1; /* disable disconnect */ ! 236: unsigned char ca: 1; /* use cache (if available) */ ! 237: unsigned char sg: 1; /* scatter/gather operation */ ! 238: unsigned char target: 3; /* target SCSI id */ ! 239: unsigned char ch_no: 2; /* SCSI channel (always 0 for 14f) */ ! 240: unsigned char lun: 3; /* logical unit number */ ! 241: unsigned int data_address PACKED; /* transfer data pointer */ ! 242: unsigned int data_len PACKED; /* length in bytes */ ! 243: unsigned int command_link PACKED; /* for linking command chains */ ! 244: unsigned char scsi_command_link_id; /* identifies command in chain */ ! 245: unsigned char use_sg; /* (if sg is set) 8 bytes per list */ ! 246: unsigned char sense_len; ! 247: unsigned char scsi_cdbs_len; /* 6, 10, or 12 */ ! 248: unsigned char scsi_cdbs[12]; /* SCSI commands */ ! 249: unsigned char adapter_status; /* non-zero indicates HA error */ ! 250: unsigned char target_status; /* non-zero indicates target error */ ! 251: unsigned int sense_addr PACKED; ! 252: ! 253: Scsi_Cmnd *SCpnt; ! 254: ! 255: struct sg_list { ! 256: unsigned int address; /* Segment Address */ ! 257: unsigned int num_bytes; /* Segment Length */ ! 258: } sglist[MAX_SGLIST]; ! 259: ! 260: unsigned int index; /* cp index */ ! 261: }; ! 262: ! 263: struct hostdata { ! 264: struct mscp cp[MAX_MAILBOXES]; /* Mailboxes for this board */ ! 265: unsigned int cp_stat[MAX_MAILBOXES]; /* FREE, IN_USE, LOCKED, IN_RESET */ ! 266: unsigned int last_cp_used; /* Index of last mailbox used */ ! 267: unsigned int iocount; /* Total i/o done for this board */ ! 268: unsigned int multicount; /* Total ... in second ihdlr loop */ ! 269: int board_number; /* Number of this board */ ! 270: char board_name[16]; /* Name of this board */ ! 271: char board_id[256]; /* data from INQUIRY on this board */ ! 272: int in_reset; /* True if board is doing a reset */ ! 273: int target_time_out[MAX_TARGET]; /* N. of timeout errors on target */ ! 274: int target_reset[MAX_TARGET]; /* If TRUE redo operation on target */ ! 275: unsigned char subversion; /* Bus type, either ISA or ESA */ ! 276: unsigned char heads; ! 277: unsigned char sectors; ! 278: ! 279: /* slot != 0 for the U24F, slot == 0 for both the U14F and U34F */ ! 280: unsigned char slot; ! 281: }; ! 282: ! 283: static struct Scsi_Host * sh[MAX_BOARDS + 1]; ! 284: static const char* driver_name = "Ux4F"; ! 285: static unsigned int irqlist[MAX_IRQ], calls[MAX_IRQ]; ! 286: ! 287: #define HD(board) ((struct hostdata *) &sh[board]->hostdata) ! 288: #define BN(board) (HD(board)->board_name) ! 289: ! 290: static void u14_34f_interrupt_handler(int, struct pt_regs *); ! 291: static int do_trace = FALSE; ! 292: ! 293: static inline unchar wait_on_busy(ushort iobase) { ! 294: unsigned int loop = MAXLOOP; ! 295: ! 296: while (inb(iobase + REG_LCL_INTR) & BSY_ASSERTED) ! 297: if (--loop == 0) return TRUE; ! 298: ! 299: return FALSE; ! 300: } ! 301: ! 302: static int board_inquiry(unsigned int j) { ! 303: struct mscp *cpp; ! 304: unsigned int time, limit = 0; ! 305: ! 306: cpp = &HD(j)->cp[0]; ! 307: memset(cpp, 0, sizeof(struct mscp)); ! 308: cpp->opcode = OP_HOST_ADAPTER; ! 309: cpp->xdir = DTD_IN; ! 310: cpp->data_address = (unsigned int) HD(j)->board_id; ! 311: cpp->data_len = sizeof(HD(j)->board_id); ! 312: cpp->scsi_cdbs_len = 6; ! 313: cpp->scsi_cdbs[0] = HA_CMD_INQUIRY; ! 314: ! 315: if (wait_on_busy(sh[j]->io_port)) { ! 316: printk("%s: board_inquiry, adapter busy.\n", BN(j)); ! 317: return TRUE; ! 318: } ! 319: ! 320: HD(j)->cp_stat[0] = IGNORE; ! 321: ! 322: /* Clear the interrupt indication */ ! 323: outb(CMD_CLR_INTR, sh[j]->io_port + REG_SYS_INTR); ! 324: ! 325: /* Store pointer in OGM address bytes */ ! 326: outl((unsigned int)cpp, sh[j]->io_port + REG_OGM); ! 327: ! 328: /* Issue OGM interrupt */ ! 329: outb(CMD_OGM_INTR, sh[j]->io_port + REG_LCL_INTR); ! 330: ! 331: sti(); ! 332: time = jiffies; ! 333: while (jiffies < (time + 100) && limit++ < 100000000); ! 334: cli(); ! 335: ! 336: if (cpp->adapter_status || HD(j)->cp_stat[0] != FREE) { ! 337: HD(j)->cp_stat[0] = FREE; ! 338: printk("%s: board_inquiry, err 0x%x.\n", BN(j), cpp->adapter_status); ! 339: return TRUE; ! 340: } ! 341: ! 342: return FALSE; ! 343: } ! 344: ! 345: static inline int port_detect(ushort *port_base, unsigned int j, ! 346: Scsi_Host_Template * tpnt) { ! 347: unsigned char irq, dma_channel, subversion; ! 348: unsigned char in_byte; ! 349: ! 350: /* Allowed BIOS base addresses (NULL indicates reserved) */ ! 351: void *bios_segment_table[8] = { ! 352: NULL, ! 353: (void *) 0xc4000, (void *) 0xc8000, (void *) 0xcc000, (void *) 0xd0000, ! 354: (void *) 0xd4000, (void *) 0xd8000, (void *) 0xdc000 ! 355: }; ! 356: ! 357: /* Allowed IRQs */ ! 358: unsigned char interrupt_table[4] = { 15, 14, 11, 10 }; ! 359: ! 360: /* Allowed DMA channels for ISA (0 indicates reserved) */ ! 361: unsigned char dma_channel_table[4] = { 5, 6, 7, 0 }; ! 362: ! 363: /* Head/sector mappings */ ! 364: struct { ! 365: unsigned char heads; ! 366: unsigned char sectors; ! 367: } mapping_table[4] = { ! 368: { 16, 63 }, { 64, 32 }, { 64, 63 }, { 64, 32 } ! 369: }; ! 370: ! 371: struct config_1 { ! 372: unsigned char bios_segment: 3; ! 373: unsigned char removable_disks_as_fixed: 1; ! 374: unsigned char interrupt: 2; ! 375: unsigned char dma_channel: 2; ! 376: } config_1; ! 377: ! 378: struct config_2 { ! 379: unsigned char ha_scsi_id: 3; ! 380: unsigned char mapping_mode: 2; ! 381: unsigned char bios_drive_number: 1; ! 382: unsigned char tfr_port: 2; ! 383: } config_2; ! 384: ! 385: char name[16]; ! 386: ! 387: sprintf(name, "%s%d", driver_name, j); ! 388: ! 389: if(check_region(*port_base, REGION_SIZE)) { ! 390: printk("%s: address 0x%03x in use, skipping probe.\n", ! 391: name, *port_base); ! 392: return FALSE; ! 393: } ! 394: ! 395: if (inb(*port_base + REG_PRODUCT_ID1) != PRODUCT_ID1) return FALSE; ! 396: ! 397: in_byte = inb(*port_base + REG_PRODUCT_ID2); ! 398: ! 399: if ((in_byte & 0xf0) != PRODUCT_ID2) return FALSE; ! 400: ! 401: *(char *)&config_1 = inb(*port_base + REG_CONFIG1); ! 402: *(char *)&config_2 = inb(*port_base + REG_CONFIG2); ! 403: ! 404: irq = interrupt_table[config_1.interrupt]; ! 405: dma_channel = dma_channel_table[config_1.dma_channel]; ! 406: subversion = (in_byte & 0x0f); ! 407: ! 408: /* Board detected, allocate its IRQ if not already done */ ! 409: if ((irq >= MAX_IRQ) || ((irqlist[irq] == NO_IRQ) && request_irq ! 410: (irq, u14_34f_interrupt_handler, SA_INTERRUPT, driver_name))) { ! 411: printk("%s: unable to allocate IRQ %u, detaching.\n", name, irq); ! 412: return FALSE; ! 413: } ! 414: ! 415: if (subversion == ISA && request_dma(dma_channel, driver_name)) { ! 416: printk("%s: unable to allocate DMA channel %u, detaching.\n", ! 417: name, dma_channel); ! 418: free_irq(irq); ! 419: return FALSE; ! 420: } ! 421: ! 422: sh[j] = scsi_register(tpnt, sizeof(struct hostdata)); ! 423: ! 424: if (sh[j] == NULL) { ! 425: printk("%s: unable to register host, detaching.\n", name); ! 426: ! 427: if (irqlist[irq] == NO_IRQ) free_irq(irq); ! 428: ! 429: if (subversion == ISA) free_dma(dma_channel); ! 430: ! 431: return FALSE; ! 432: } ! 433: ! 434: sh[j]->io_port = *port_base; ! 435: sh[j]->n_io_port = REGION_SIZE; ! 436: sh[j]->base = bios_segment_table[config_1.bios_segment]; ! 437: sh[j]->irq = irq; ! 438: sh[j]->sg_tablesize = MAX_SGLIST; ! 439: sh[j]->this_id = config_2.ha_scsi_id; ! 440: sh[j]->can_queue = MAX_MAILBOXES; ! 441: sh[j]->cmd_per_lun = MAX_CMD_PER_LUN; ! 442: ! 443: #if defined(DEBUG_DETECT) ! 444: { ! 445: unsigned char sys_mask, lcl_mask; ! 446: ! 447: sys_mask = inb(sh[j]->io_port + REG_SYS_MASK); ! 448: lcl_mask = inb(sh[j]->io_port + REG_LCL_MASK); ! 449: printk("SYS_MASK 0x%x, LCL_MASK 0x%x.\n", sys_mask, lcl_mask); ! 450: } ! 451: #endif ! 452: ! 453: /* If BIOS is disabled, force enable interrupts */ ! 454: if (sh[j]->base == 0) outb(CMD_ENA_INTR, sh[j]->io_port + REG_SYS_MASK); ! 455: ! 456: /* Register the I/O space that we use */ ! 457: request_region(sh[j]->io_port, REGION_SIZE, driver_name); ! 458: ! 459: memset(HD(j), 0, sizeof(struct hostdata)); ! 460: HD(j)->heads = mapping_table[config_2.mapping_mode].heads; ! 461: HD(j)->sectors = mapping_table[config_2.mapping_mode].sectors; ! 462: HD(j)->subversion = subversion; ! 463: HD(j)->board_number = j; ! 464: irqlist[irq] = j; ! 465: ! 466: if (HD(j)->subversion == ESA) { ! 467: ! 468: #if defined (HAVE_OLD_UX4F_FIRMWARE) ! 469: sh[j]->sg_tablesize = MAX_SAFE_SGLIST; ! 470: #endif ! 471: ! 472: sh[j]->dma_channel = NO_DMA; ! 473: sh[j]->unchecked_isa_dma = FALSE; ! 474: sprintf(BN(j), "U34F%d", j); ! 475: } ! 476: else { ! 477: sh[j]->wish_block = TRUE; ! 478: ! 479: #if defined (HAVE_OLD_UX4F_FIRMWARE) ! 480: sh[j]->hostt->use_clustering = DISABLE_CLUSTERING; ! 481: sh[j]->sg_tablesize = MAX_SAFE_SGLIST; ! 482: #endif ! 483: ! 484: sh[j]->dma_channel = dma_channel; ! 485: sh[j]->unchecked_isa_dma = TRUE; ! 486: sprintf(BN(j), "U14F%d", j); ! 487: disable_dma(dma_channel); ! 488: clear_dma_ff(dma_channel); ! 489: set_dma_mode(dma_channel, DMA_MODE_CASCADE); ! 490: enable_dma(dma_channel); ! 491: } ! 492: ! 493: if (HD(j)->subversion == ISA && !board_inquiry(j)) { ! 494: HD(j)->board_id[40] = 0; ! 495: ! 496: if (strcmp(&HD(j)->board_id[32], "06000600")) { ! 497: printk("%s: %s.\n", BN(j), &HD(j)->board_id[8]); ! 498: printk("%s: firmware %s is outdated, FW PROM should be 28004-006.\n", ! 499: BN(j), &HD(j)->board_id[32]); ! 500: sh[j]->hostt->use_clustering = DISABLE_CLUSTERING; ! 501: sh[j]->sg_tablesize = MAX_SAFE_SGLIST; ! 502: } ! 503: } ! 504: ! 505: printk("%s: PORT 0x%03x, BIOS 0x%05x, IRQ %u, DMA %u, SG %d, "\ ! 506: "Mbox %d, CmdLun %d, C%d.\n", BN(j), sh[j]->io_port, ! 507: (int)sh[j]->base, sh[j]->irq, ! 508: sh[j]->dma_channel, sh[j]->sg_tablesize, ! 509: sh[j]->can_queue, sh[j]->cmd_per_lun, ! 510: sh[j]->hostt->use_clustering); ! 511: return TRUE; ! 512: } ! 513: ! 514: int u14_34f_detect (Scsi_Host_Template * tpnt) { ! 515: unsigned int j = 0, k, flags; ! 516: ! 517: ushort io_port[] = { ! 518: 0x330, 0x340, 0x230, 0x240, 0x210, 0x130, 0x140, 0x0 ! 519: }; ! 520: ! 521: ushort *port_base = io_port; ! 522: ! 523: tpnt->proc_dir = &proc_scsi_u14_34f; ! 524: ! 525: save_flags(flags); ! 526: cli(); ! 527: ! 528: for (k = 0; k < MAX_IRQ; k++) { ! 529: irqlist[k] = NO_IRQ; ! 530: calls[k] = 0; ! 531: } ! 532: ! 533: for (k = 0; k < MAX_BOARDS + 1; k++) sh[k] = NULL; ! 534: ! 535: while (*port_base) { ! 536: ! 537: if (j < MAX_BOARDS && port_detect(port_base, j, tpnt)) j++; ! 538: ! 539: port_base++; ! 540: } ! 541: ! 542: if (j > 0) ! 543: printk("UltraStor 14F/34F: Copyright (C) 1994, 1995 Dario Ballabio.\n"); ! 544: ! 545: restore_flags(flags); ! 546: return j; ! 547: } ! 548: ! 549: static inline void build_sg_list(struct mscp *cpp, Scsi_Cmnd *SCpnt) { ! 550: unsigned int k, data_len = 0; ! 551: struct scatterlist * sgpnt; ! 552: ! 553: sgpnt = (struct scatterlist *) SCpnt->request_buffer; ! 554: ! 555: for (k = 0; k < SCpnt->use_sg; k++) { ! 556: cpp->sglist[k].address = (unsigned int) sgpnt[k].address; ! 557: cpp->sglist[k].num_bytes = sgpnt[k].length; ! 558: data_len += sgpnt[k].length; ! 559: } ! 560: ! 561: cpp->use_sg = SCpnt->use_sg; ! 562: cpp->data_address = (unsigned int) cpp->sglist; ! 563: cpp->data_len = data_len; ! 564: } ! 565: ! 566: int u14_34f_queuecommand(Scsi_Cmnd *SCpnt, void (*done)(Scsi_Cmnd *)) { ! 567: unsigned int i, j, k, flags; ! 568: struct mscp *cpp; ! 569: ! 570: save_flags(flags); ! 571: cli(); ! 572: /* j is the board number */ ! 573: j = ((struct hostdata *) SCpnt->host->hostdata)->board_number; ! 574: ! 575: if (!done) panic("%s: qcomm, pid %ld, null done.\n", BN(j), SCpnt->pid); ! 576: ! 577: /* i is the mailbox number, look for the first free mailbox ! 578: starting from last_cp_used */ ! 579: i = HD(j)->last_cp_used + 1; ! 580: ! 581: for (k = 0; k < sh[j]->can_queue; k++, i++) { ! 582: ! 583: if (i >= sh[j]->can_queue) i = 0; ! 584: ! 585: if (HD(j)->cp_stat[i] == FREE) { ! 586: HD(j)->last_cp_used = i; ! 587: break; ! 588: } ! 589: } ! 590: ! 591: if (k == sh[j]->can_queue) { ! 592: printk("%s: qcomm, no free mailbox, resetting.\n", BN(j)); ! 593: ! 594: if (HD(j)->in_reset) ! 595: printk("%s: qcomm, already in reset.\n", BN(j)); ! 596: else if (u14_34f_reset(SCpnt) == SCSI_RESET_SUCCESS) ! 597: panic("%s: qcomm, SCSI_RESET_SUCCESS.\n", BN(j)); ! 598: ! 599: SCpnt->result = DID_BUS_BUSY << 16; ! 600: SCpnt->host_scribble = NULL; ! 601: printk("%s: qcomm, pid %ld, DID_BUS_BUSY, done.\n", BN(j), SCpnt->pid); ! 602: restore_flags(flags); ! 603: done(SCpnt); ! 604: return 0; ! 605: } ! 606: ! 607: /* Set pointer to control packet structure */ ! 608: cpp = &HD(j)->cp[i]; ! 609: ! 610: memset(cpp, 0, sizeof(struct mscp)); ! 611: SCpnt->scsi_done = done; ! 612: cpp->index = i; ! 613: SCpnt->host_scribble = (unsigned char *) &cpp->index; ! 614: ! 615: if (do_trace) printk("%s: qcomm, mbox %d, target %d, pid %ld.\n", ! 616: BN(j), i, SCpnt->target, SCpnt->pid); ! 617: ! 618: cpp->opcode = OP_SCSI; ! 619: cpp->xdir = DTD_SCSI; ! 620: cpp->target = SCpnt->target; ! 621: cpp->lun = SCpnt->lun; ! 622: cpp->SCpnt = SCpnt; ! 623: cpp->sense_addr = (unsigned int) SCpnt->sense_buffer; ! 624: cpp->sense_len = sizeof SCpnt->sense_buffer; ! 625: ! 626: if (SCpnt->use_sg) { ! 627: cpp->sg = TRUE; ! 628: build_sg_list(cpp, SCpnt); ! 629: } ! 630: else { ! 631: cpp->data_address = (unsigned int)SCpnt->request_buffer; ! 632: cpp->data_len = SCpnt->request_bufflen; ! 633: } ! 634: ! 635: cpp->scsi_cdbs_len = SCpnt->cmd_len; ! 636: memcpy(cpp->scsi_cdbs, SCpnt->cmnd, cpp->scsi_cdbs_len); ! 637: ! 638: if (wait_on_busy(sh[j]->io_port)) { ! 639: SCpnt->result = DID_ERROR << 16; ! 640: SCpnt->host_scribble = NULL; ! 641: printk("%s: qcomm, target %d, pid %ld, adapter busy, DID_ERROR, done.\n", ! 642: BN(j), SCpnt->target, SCpnt->pid); ! 643: restore_flags(flags); ! 644: done(SCpnt); ! 645: return 0; ! 646: } ! 647: ! 648: /* Store pointer in OGM address bytes */ ! 649: outl((unsigned int)cpp, sh[j]->io_port + REG_OGM); ! 650: ! 651: /* Issue OGM interrupt */ ! 652: outb(CMD_OGM_INTR, sh[j]->io_port + REG_LCL_INTR); ! 653: ! 654: HD(j)->cp_stat[i] = IN_USE; ! 655: restore_flags(flags); ! 656: return 0; ! 657: } ! 658: ! 659: int u14_34f_abort(Scsi_Cmnd *SCarg) { ! 660: unsigned int i, j, flags; ! 661: ! 662: save_flags(flags); ! 663: cli(); ! 664: j = ((struct hostdata *) SCarg->host->hostdata)->board_number; ! 665: ! 666: if (SCarg->host_scribble == NULL) { ! 667: printk("%s: abort, target %d, pid %ld inactive.\n", ! 668: BN(j), SCarg->target, SCarg->pid); ! 669: restore_flags(flags); ! 670: return SCSI_ABORT_NOT_RUNNING; ! 671: } ! 672: ! 673: i = *(unsigned int *)SCarg->host_scribble; ! 674: printk("%s: abort, mbox %d, target %d, pid %ld.\n", ! 675: BN(j), i, SCarg->target, SCarg->pid); ! 676: ! 677: if (i >= sh[j]->can_queue) ! 678: panic("%s: abort, invalid SCarg->host_scribble.\n", BN(j)); ! 679: ! 680: if (wait_on_busy(sh[j]->io_port)) { ! 681: printk("%s: abort, timeout error.\n", BN(j)); ! 682: restore_flags(flags); ! 683: return SCSI_ABORT_ERROR; ! 684: } ! 685: ! 686: if (HD(j)->cp_stat[i] == FREE) { ! 687: printk("%s: abort, mbox %d is free.\n", BN(j), i); ! 688: restore_flags(flags); ! 689: return SCSI_ABORT_NOT_RUNNING; ! 690: } ! 691: ! 692: if (HD(j)->cp_stat[i] == IN_USE) { ! 693: printk("%s: abort, mbox %d is in use.\n", BN(j), i); ! 694: ! 695: if (SCarg != HD(j)->cp[i].SCpnt) ! 696: panic("%s: abort, mbox %d, SCarg %p, cp SCpnt %p.\n", ! 697: BN(j), i, SCarg, HD(j)->cp[i].SCpnt); ! 698: ! 699: restore_flags(flags); ! 700: return SCSI_ABORT_SNOOZE; ! 701: } ! 702: ! 703: if (HD(j)->cp_stat[i] == IN_RESET) { ! 704: printk("%s: abort, mbox %d is in reset.\n", BN(j), i); ! 705: restore_flags(flags); ! 706: return SCSI_ABORT_ERROR; ! 707: } ! 708: ! 709: if (HD(j)->cp_stat[i] == LOCKED) { ! 710: printk("%s: abort, mbox %d is locked.\n", BN(j), i); ! 711: restore_flags(flags); ! 712: return SCSI_ABORT_NOT_RUNNING; ! 713: } ! 714: restore_flags(flags); ! 715: panic("%s: abort, mbox %d, invalid cp_stat.\n", BN(j), i); ! 716: } ! 717: ! 718: int u14_34f_reset(Scsi_Cmnd * SCarg) { ! 719: unsigned int i, j, flags, time, k, limit = 0; ! 720: int arg_done = FALSE; ! 721: Scsi_Cmnd *SCpnt; ! 722: ! 723: save_flags(flags); ! 724: cli(); ! 725: j = ((struct hostdata *) SCarg->host->hostdata)->board_number; ! 726: printk("%s: reset, enter, target %d, pid %ld.\n", ! 727: BN(j), SCarg->target, SCarg->pid); ! 728: ! 729: if (SCarg->host_scribble == NULL) ! 730: printk("%s: reset, pid %ld inactive.\n", BN(j), SCarg->pid); ! 731: ! 732: if (HD(j)->in_reset) { ! 733: printk("%s: reset, exit, already in reset.\n", BN(j)); ! 734: restore_flags(flags); ! 735: return SCSI_RESET_ERROR; ! 736: } ! 737: ! 738: if (wait_on_busy(sh[j]->io_port)) { ! 739: printk("%s: reset, exit, timeout error.\n", BN(j)); ! 740: restore_flags(flags); ! 741: return SCSI_RESET_ERROR; ! 742: } ! 743: ! 744: for (k = 0; k < MAX_TARGET; k++) HD(j)->target_reset[k] = TRUE; ! 745: ! 746: for (k = 0; k < MAX_TARGET; k++) HD(j)->target_time_out[k] = 0; ! 747: ! 748: for (i = 0; i < sh[j]->can_queue; i++) { ! 749: ! 750: if (HD(j)->cp_stat[i] == FREE) continue; ! 751: ! 752: if (HD(j)->cp_stat[i] == LOCKED) { ! 753: HD(j)->cp_stat[i] = FREE; ! 754: printk("%s: reset, locked mbox %d forced free.\n", BN(j), i); ! 755: continue; ! 756: } ! 757: ! 758: SCpnt = HD(j)->cp[i].SCpnt; ! 759: HD(j)->cp_stat[i] = IN_RESET; ! 760: printk("%s: reset, mbox %d in reset, pid %ld.\n", ! 761: BN(j), i, SCpnt->pid); ! 762: ! 763: if (SCpnt == NULL) ! 764: panic("%s: reset, mbox %d, SCpnt == NULL.\n", BN(j), i); ! 765: ! 766: if (SCpnt->host_scribble == NULL) ! 767: panic("%s: reset, mbox %d, garbled SCpnt.\n", BN(j), i); ! 768: ! 769: if (*(unsigned int *)SCpnt->host_scribble != i) ! 770: panic("%s: reset, mbox %d, index mismatch.\n", BN(j), i); ! 771: ! 772: if (SCpnt->scsi_done == NULL) ! 773: panic("%s: reset, mbox %d, SCpnt->scsi_done == NULL.\n", BN(j), i); ! 774: ! 775: if (SCpnt == SCarg) arg_done = TRUE; ! 776: } ! 777: ! 778: if (wait_on_busy(sh[j]->io_port)) { ! 779: printk("%s: reset, cannot reset, timeout error.\n", BN(j)); ! 780: restore_flags(flags); ! 781: return SCSI_RESET_ERROR; ! 782: } ! 783: ! 784: outb(CMD_RESET, sh[j]->io_port + REG_LCL_INTR); ! 785: printk("%s: reset, board reset done, enabling interrupts.\n", BN(j)); ! 786: ! 787: #if defined (DEBUG_RESET) ! 788: do_trace = TRUE; ! 789: #endif ! 790: ! 791: HD(j)->in_reset = TRUE; ! 792: sti(); ! 793: time = jiffies; ! 794: while (jiffies < (time + 100) && limit++ < 100000000); ! 795: cli(); ! 796: printk("%s: reset, interrupts disabled, loops %d.\n", BN(j), limit); ! 797: ! 798: for (i = 0; i < sh[j]->can_queue; i++) { ! 799: ! 800: /* Skip mailboxes already set free by interrupt */ ! 801: if (HD(j)->cp_stat[i] != IN_RESET) continue; ! 802: ! 803: SCpnt = HD(j)->cp[i].SCpnt; ! 804: SCpnt->result = DID_RESET << 16; ! 805: SCpnt->host_scribble = NULL; ! 806: ! 807: /* This mailbox is still waiting for its interrupt */ ! 808: HD(j)->cp_stat[i] = LOCKED; ! 809: ! 810: printk("%s, reset, mbox %d locked, DID_RESET, pid %ld done.\n", ! 811: BN(j), i, SCpnt->pid); ! 812: restore_flags(flags); ! 813: SCpnt->scsi_done(SCpnt); ! 814: cli(); ! 815: } ! 816: ! 817: HD(j)->in_reset = FALSE; ! 818: do_trace = FALSE; ! 819: restore_flags(flags); ! 820: ! 821: if (arg_done) { ! 822: printk("%s: reset, exit, success.\n", BN(j)); ! 823: return SCSI_RESET_SUCCESS; ! 824: } ! 825: else { ! 826: printk("%s: reset, exit, wakeup.\n", BN(j)); ! 827: return SCSI_RESET_PUNT; ! 828: } ! 829: } ! 830: ! 831: int u14_34f_biosparam(Disk * disk, kdev_t dev, int * dkinfo) { ! 832: unsigned int j = 0; ! 833: int size = disk->capacity; ! 834: ! 835: dkinfo[0] = HD(j)->heads; ! 836: dkinfo[1] = HD(j)->sectors; ! 837: dkinfo[2] = size / (HD(j)->heads * HD(j)->sectors); ! 838: return 0; ! 839: } ! 840: ! 841: static void u14_34f_interrupt_handler(int irq, struct pt_regs * regs) { ! 842: Scsi_Cmnd *SCpnt; ! 843: unsigned int i, j, k, flags, status, tstatus, loops, total_loops = 0; ! 844: struct mscp *spp; ! 845: ! 846: save_flags(flags); ! 847: cli(); ! 848: ! 849: if (irqlist[irq] == NO_IRQ) { ! 850: printk("%s, ihdlr, irq %d, unexpected interrupt.\n", driver_name, irq); ! 851: restore_flags(flags); ! 852: return; ! 853: } ! 854: ! 855: if (do_trace) printk("%s: ihdlr, enter, irq %d, calls %d.\n", ! 856: driver_name, irq, calls[irq]); ! 857: ! 858: /* Service all the boards configured on this irq */ ! 859: for (j = 0; sh[j] != NULL; j++) { ! 860: ! 861: if (sh[j]->irq != irq) continue; ! 862: ! 863: loops = 0; ! 864: ! 865: /* Loop until all interrupts for a board are serviced */ ! 866: while (inb(sh[j]->io_port + REG_SYS_INTR) & IRQ_ASSERTED) { ! 867: total_loops++; ! 868: loops++; ! 869: ! 870: if (do_trace) printk("%s: ihdlr, start service, count %d.\n", ! 871: BN(j), HD(j)->iocount); ! 872: ! 873: spp = (struct mscp *)inl(sh[j]->io_port + REG_ICM); ! 874: ! 875: /* Clear interrupt pending flag */ ! 876: outb(CMD_CLR_INTR, sh[j]->io_port + REG_SYS_INTR); ! 877: ! 878: i = spp - HD(j)->cp; ! 879: ! 880: if (i >= sh[j]->can_queue) ! 881: panic("%s: ihdlr, invalid mscp address.\n", BN(j)); ! 882: ! 883: if (HD(j)->cp_stat[i] == IGNORE) { ! 884: HD(j)->cp_stat[i] = FREE; ! 885: continue; ! 886: } ! 887: else if (HD(j)->cp_stat[i] == LOCKED) { ! 888: HD(j)->cp_stat[i] = FREE; ! 889: printk("%s: ihdlr, mbox %d unlocked, count %d.\n", ! 890: BN(j), i, HD(j)->iocount); ! 891: continue; ! 892: } ! 893: else if (HD(j)->cp_stat[i] == FREE) { ! 894: printk("%s: ihdlr, mbox %d is free, count %d.\n", ! 895: BN(j), i, HD(j)->iocount); ! 896: continue; ! 897: } ! 898: else if (HD(j)->cp_stat[i] == IN_RESET) ! 899: printk("%s: ihdlr, mbox %d is in reset.\n", BN(j), i); ! 900: else if (HD(j)->cp_stat[i] != IN_USE) ! 901: panic("%s: ihdlr, mbox %d, invalid cp_stat.\n", BN(j), i); ! 902: ! 903: HD(j)->cp_stat[i] = FREE; ! 904: SCpnt = spp->SCpnt; ! 905: ! 906: if (SCpnt == NULL) ! 907: panic("%s: ihdlr, mbox %d, SCpnt == NULL.\n", BN(j), i); ! 908: ! 909: if (SCpnt->host_scribble == NULL) ! 910: panic("%s: ihdlr, mbox %d, pid %ld, SCpnt %p garbled.\n", ! 911: BN(j), i, SCpnt->pid, SCpnt); ! 912: ! 913: if (*(unsigned int *)SCpnt->host_scribble != i) ! 914: panic("%s: ihdlr, mbox %d, pid %ld, index mismatch %d,"\ ! 915: " irq %d.\n", BN(j), i, SCpnt->pid, ! 916: *(unsigned int *)SCpnt->host_scribble, irq); ! 917: ! 918: tstatus = status_byte(spp->target_status); ! 919: ! 920: switch (spp->adapter_status) { ! 921: case ASOK: /* status OK */ ! 922: ! 923: /* Forces a reset if a disk drive keeps returning BUSY */ ! 924: if (tstatus == BUSY && SCpnt->device->type != TYPE_TAPE) ! 925: status = DID_ERROR << 16; ! 926: ! 927: /* If there was a bus reset, redo operation on each target */ ! 928: else if (tstatus != GOOD ! 929: && SCpnt->device->type == TYPE_DISK ! 930: && HD(j)->target_reset[SCpnt->target]) ! 931: status = DID_BUS_BUSY << 16; ! 932: ! 933: /* Works around a flaw in scsi.c */ ! 934: else if (tstatus == CHECK_CONDITION ! 935: && SCpnt->device->type == TYPE_DISK ! 936: && (SCpnt->sense_buffer[2] & 0xf) == RECOVERED_ERROR) ! 937: status = DID_BUS_BUSY << 16; ! 938: ! 939: else ! 940: status = DID_OK << 16; ! 941: ! 942: if (tstatus == GOOD) ! 943: HD(j)->target_reset[SCpnt->target] = FALSE; ! 944: ! 945: if (spp->target_status && SCpnt->device->type == TYPE_DISK) ! 946: printk("%s: ihdlr, target %d:%d, pid %ld, target_status "\ ! 947: "0x%x, sense key 0x%x.\n", BN(j), ! 948: SCpnt->target, SCpnt->lun, SCpnt->pid, ! 949: spp->target_status, SCpnt->sense_buffer[2]); ! 950: ! 951: HD(j)->target_time_out[SCpnt->target] = 0; ! 952: ! 953: break; ! 954: case ASST: /* Selection Time Out */ ! 955: ! 956: if (HD(j)->target_time_out[SCpnt->target] > 1) ! 957: status = DID_ERROR << 16; ! 958: else { ! 959: status = DID_TIME_OUT << 16; ! 960: HD(j)->target_time_out[SCpnt->target]++; ! 961: } ! 962: ! 963: break; ! 964: case 0x92: /* Data over/under-run */ ! 965: case 0x93: /* Unexpected bus free */ ! 966: case 0x94: /* Target bus phase sequence failure */ ! 967: case 0x96: /* Illegal SCSI command */ ! 968: case 0xa3: /* SCSI bus reset error */ ! 969: ! 970: if (SCpnt->device->type != TYPE_TAPE) ! 971: status = DID_BUS_BUSY << 16; ! 972: else ! 973: status = DID_ERROR << 16; ! 974: ! 975: for (k = 0; k < MAX_TARGET; k++) ! 976: HD(j)->target_reset[k] = TRUE; ! 977: ! 978: break; ! 979: case 0x01: /* Invalid command */ ! 980: case 0x02: /* Invalid parameters */ ! 981: case 0x03: /* Invalid data list */ ! 982: case 0x84: /* SCSI bus abort error */ ! 983: case 0x9b: /* Auto request sense error */ ! 984: case 0x9f: /* Unexpected command complete message error */ ! 985: case 0xff: /* Invalid parameter in the S/G list */ ! 986: default: ! 987: status = DID_ERROR << 16; ! 988: break; ! 989: } ! 990: ! 991: SCpnt->result = status | spp->target_status; ! 992: HD(j)->iocount++; ! 993: ! 994: if (loops > 1) HD(j)->multicount++; ! 995: ! 996: #if defined (DEBUG_INTERRUPT) ! 997: if (SCpnt->result || do_trace) ! 998: #else ! 999: if ((spp->adapter_status != ASOK && HD(j)->iocount > 1000) || ! 1000: (spp->adapter_status != ASOK && ! 1001: spp->adapter_status != ASST && HD(j)->iocount <= 1000) || ! 1002: do_trace) ! 1003: #endif ! 1004: printk("%s: ihdlr, mbox %d, err 0x%x:%x,"\ ! 1005: " target %d:%d, pid %ld, count %d.\n", ! 1006: BN(j), i, spp->adapter_status, spp->target_status, ! 1007: SCpnt->target, SCpnt->lun, SCpnt->pid, HD(j)->iocount); ! 1008: ! 1009: /* Set the command state to inactive */ ! 1010: SCpnt->host_scribble = NULL; ! 1011: ! 1012: restore_flags(flags); ! 1013: SCpnt->scsi_done(SCpnt); ! 1014: cli(); ! 1015: ! 1016: } /* Multiple command loop */ ! 1017: ! 1018: } /* Boards loop */ ! 1019: ! 1020: calls[irq]++; ! 1021: ! 1022: if (total_loops == 0) ! 1023: printk("%s: ihdlr, irq %d, no command completed, calls %d.\n", ! 1024: driver_name, irq, calls[irq]); ! 1025: ! 1026: if (do_trace) printk("%s: ihdlr, exit, irq %d, calls %d.\n", ! 1027: driver_name, irq, calls[irq]); ! 1028: ! 1029: #if defined (DEBUG_STATISTICS) ! 1030: if ((calls[irq] % 100000) == 10000) ! 1031: for (j = 0; sh[j] != NULL; j++) ! 1032: printk("%s: ihdlr, calls %d, count %d, multi %d.\n", BN(j), ! 1033: calls[(sh[j]->irq)], HD(j)->iocount, HD(j)->multicount); ! 1034: #endif ! 1035: ! 1036: restore_flags(flags); ! 1037: return; ! 1038: } ! 1039: ! 1040: #if defined(MODULE) ! 1041: Scsi_Host_Template driver_template = ULTRASTOR_14_34F; ! 1042: ! 1043: #include "scsi_module.c" ! 1044: #endif
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