/* qlogicpti.c: Performance Technologies QlogicISP sbus card driver. * * Copyright (C) 1996 David S. Miller (davem@caipfs.rutgers.edu) * * A lot of this driver was directly stolen from Erik H. Moe's PCI * Qlogic ISP driver. Mucho kudos to him for this code. * * An even bigger kudos to John Grana at Performance Technologies * for providing me with the hardware to write this driver, you rule * John you really do. * * May, 2, 1997: Added support for QLGC,isp --jj */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include "qlogicpti.h" #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #define MAX_TARGETS 16 #define MAX_LUNS 8 /* 32 for 1.31 F/W */ #define DEFAULT_LOOP_COUNT 10000 #include "qlogicpti_asm.c" static struct qlogicpti *qptichain = NULL; static DEFINE_SPINLOCK(qptichain_lock); static int qptis_running = 0; #define PACKB(a, b) (((a)<<4)|(b)) static const u_char mbox_param[] = { PACKB(1, 1), /* MBOX_NO_OP */ PACKB(5, 5), /* MBOX_LOAD_RAM */ PACKB(2, 0), /* MBOX_EXEC_FIRMWARE */ PACKB(5, 5), /* MBOX_DUMP_RAM */ PACKB(3, 3), /* MBOX_WRITE_RAM_WORD */ PACKB(2, 3), /* MBOX_READ_RAM_WORD */ PACKB(6, 6), /* MBOX_MAILBOX_REG_TEST */ PACKB(2, 3), /* MBOX_VERIFY_CHECKSUM */ PACKB(1, 3), /* MBOX_ABOUT_FIRMWARE */ PACKB(0, 0), /* 0x0009 */ PACKB(0, 0), /* 0x000a */ PACKB(0, 0), /* 0x000b */ PACKB(0, 0), /* 0x000c */ PACKB(0, 0), /* 0x000d */ PACKB(1, 2), /* MBOX_CHECK_FIRMWARE */ PACKB(0, 0), /* 0x000f */ PACKB(5, 5), /* MBOX_INIT_REQ_QUEUE */ PACKB(6, 6), /* MBOX_INIT_RES_QUEUE */ PACKB(4, 4), /* MBOX_EXECUTE_IOCB */ PACKB(2, 2), /* MBOX_WAKE_UP */ PACKB(1, 6), /* MBOX_STOP_FIRMWARE */ PACKB(4, 4), /* MBOX_ABORT */ PACKB(2, 2), /* MBOX_ABORT_DEVICE */ PACKB(3, 3), /* MBOX_ABORT_TARGET */ PACKB(2, 2), /* MBOX_BUS_RESET */ PACKB(2, 3), /* MBOX_STOP_QUEUE */ PACKB(2, 3), /* MBOX_START_QUEUE */ PACKB(2, 3), /* MBOX_SINGLE_STEP_QUEUE */ PACKB(2, 3), /* MBOX_ABORT_QUEUE */ PACKB(2, 4), /* MBOX_GET_DEV_QUEUE_STATUS */ PACKB(0, 0), /* 0x001e */ PACKB(1, 3), /* MBOX_GET_FIRMWARE_STATUS */ PACKB(1, 2), /* MBOX_GET_INIT_SCSI_ID */ PACKB(1, 2), /* MBOX_GET_SELECT_TIMEOUT */ PACKB(1, 3), /* MBOX_GET_RETRY_COUNT */ PACKB(1, 2), /* MBOX_GET_TAG_AGE_LIMIT */ PACKB(1, 2), /* MBOX_GET_CLOCK_RATE */ PACKB(1, 2), /* MBOX_GET_ACT_NEG_STATE */ PACKB(1, 2), /* MBOX_GET_ASYNC_DATA_SETUP_TIME */ PACKB(1, 3), /* MBOX_GET_SBUS_PARAMS */ PACKB(2, 4), /* MBOX_GET_TARGET_PARAMS */ PACKB(2, 4), /* MBOX_GET_DEV_QUEUE_PARAMS */ PACKB(0, 0), /* 0x002a */ PACKB(0, 0), /* 0x002b */ PACKB(0, 0), /* 0x002c */ PACKB(0, 0), /* 0x002d */ PACKB(0, 0), /* 0x002e */ PACKB(0, 0), /* 0x002f */ PACKB(2, 2), /* MBOX_SET_INIT_SCSI_ID */ PACKB(2, 2), /* MBOX_SET_SELECT_TIMEOUT */ PACKB(3, 3), /* MBOX_SET_RETRY_COUNT */ PACKB(2, 2), /* MBOX_SET_TAG_AGE_LIMIT */ PACKB(2, 2), /* MBOX_SET_CLOCK_RATE */ PACKB(2, 2), /* MBOX_SET_ACTIVE_NEG_STATE */ PACKB(2, 2), /* MBOX_SET_ASYNC_DATA_SETUP_TIME */ PACKB(3, 3), /* MBOX_SET_SBUS_CONTROL_PARAMS */ PACKB(4, 4), /* MBOX_SET_TARGET_PARAMS */ PACKB(4, 4), /* MBOX_SET_DEV_QUEUE_PARAMS */ PACKB(0, 0), /* 0x003a */ PACKB(0, 0), /* 0x003b */ PACKB(0, 0), /* 0x003c */ PACKB(0, 0), /* 0x003d */ PACKB(0, 0), /* 0x003e */ PACKB(0, 0), /* 0x003f */ PACKB(0, 0), /* 0x0040 */ PACKB(0, 0), /* 0x0041 */ PACKB(0, 0) /* 0x0042 */ }; #define MAX_MBOX_COMMAND (sizeof(mbox_param)/sizeof(u_short)) /* queue length's _must_ be power of two: */ #define QUEUE_DEPTH(in, out, ql) ((in - out) & (ql)) #define REQ_QUEUE_DEPTH(in, out) QUEUE_DEPTH(in, out, \ QLOGICPTI_REQ_QUEUE_LEN) #define RES_QUEUE_DEPTH(in, out) QUEUE_DEPTH(in, out, RES_QUEUE_LEN) static inline void qlogicpti_enable_irqs(struct qlogicpti *qpti) { sbus_writew(SBUS_CTRL_ERIRQ | SBUS_CTRL_GENAB, qpti->qregs + SBUS_CTRL); } static inline void qlogicpti_disable_irqs(struct qlogicpti *qpti) { sbus_writew(0, qpti->qregs + SBUS_CTRL); } static inline void set_sbus_cfg1(struct qlogicpti *qpti) { u16 val; u8 bursts = qpti->bursts; #if 0 /* It appears that at least PTI cards do not support * 64-byte bursts and that setting the B64 bit actually * is a nop and the chip ends up using the smallest burst * size. -DaveM */ if (sbus_can_burst64(qpti->sdev) && (bursts & DMA_BURST64)) { val = (SBUS_CFG1_BENAB | SBUS_CFG1_B64); } else #endif if (bursts & DMA_BURST32) { val = (SBUS_CFG1_BENAB | SBUS_CFG1_B32); } else if (bursts & DMA_BURST16) { val = (SBUS_CFG1_BENAB | SBUS_CFG1_B16); } else if (bursts & DMA_BURST8) { val = (SBUS_CFG1_BENAB | SBUS_CFG1_B8); } else { val = 0; /* No sbus bursts for you... */ } sbus_writew(val, qpti->qregs + SBUS_CFG1); } static int qlogicpti_mbox_command(struct qlogicpti *qpti, u_short param[], int force) { int loop_count; u16 tmp; if (mbox_param[param[0]] == 0) return 1; /* Set SBUS semaphore. */ tmp = sbus_readw(qpti->qregs + SBUS_SEMAPHORE); tmp |= SBUS_SEMAPHORE_LCK; sbus_writew(tmp, qpti->qregs + SBUS_SEMAPHORE); /* Wait for host IRQ bit to clear. */ loop_count = DEFAULT_LOOP_COUNT; while (--loop_count && (sbus_readw(qpti->qregs + HCCTRL) & HCCTRL_HIRQ)) { barrier(); cpu_relax(); } if (!loop_count) printk(KERN_EMERG "qlogicpti: mbox_command loop timeout #1\n"); /* Write mailbox command registers. */ switch (mbox_param[param[0]] >> 4) { case 6: sbus_writew(param[5], qpti->qregs + MBOX5); case 5: sbus_writew(param[4], qpti->qregs + MBOX4); case 4: sbus_writew(param[3], qpti->qregs + MBOX3); case 3: sbus_writew(param[2], qpti->qregs + MBOX2); case 2: sbus_writew(param[1], qpti->qregs + MBOX1); case 1: sbus_writew(param[0], qpti->qregs + MBOX0); } /* Clear RISC interrupt. */ tmp = sbus_readw(qpti->qregs + HCCTRL); tmp |= HCCTRL_CRIRQ; sbus_writew(tmp, qpti->qregs + HCCTRL); /* Clear SBUS semaphore. */ sbus_writew(0, qpti->qregs + SBUS_SEMAPHORE); /* Set HOST interrupt. */ tmp = sbus_readw(qpti->qregs + HCCTRL); tmp |= HCCTRL_SHIRQ; sbus_writew(tmp, qpti->qregs + HCCTRL); /* Wait for HOST interrupt clears. */ loop_count = DEFAULT_LOOP_COUNT; while (--loop_count && (sbus_readw(qpti->qregs + HCCTRL) & HCCTRL_CRIRQ)) udelay(20); if (!loop_count) printk(KERN_EMERG "qlogicpti: mbox_command[%04x] loop timeout #2\n", param[0]); /* Wait for SBUS semaphore to get set. */ loop_count = DEFAULT_LOOP_COUNT; while (--loop_count && !(sbus_readw(qpti->qregs + SBUS_SEMAPHORE) & SBUS_SEMAPHORE_LCK)) { udelay(20); /* Workaround for some buggy chips. */ if (sbus_readw(qpti->qregs + MBOX0) & 0x4000) break; } if (!loop_count) printk(KERN_EMERG "qlogicpti: mbox_command[%04x] loop timeout #3\n", param[0]); /* Wait for MBOX busy condition to go away. */ loop_count = DEFAULT_LOOP_COUNT; while (--loop_count && (sbus_readw(qpti->qregs + MBOX0) == 0x04)) udelay(20); if (!loop_count) printk(KERN_EMERG "qlogicpti: mbox_command[%04x] loop timeout #4\n", param[0]); /* Read back output parameters. */ switch (mbox_param[param[0]] & 0xf) { case 6: param[5] = sbus_readw(qpti->qregs + MBOX5); case 5: param[4] = sbus_readw(qpti->qregs + MBOX4); case 4: param[3] = sbus_readw(qpti->qregs + MBOX3); case 3: param[2] = sbus_readw(qpti->qregs + MBOX2); case 2: param[1] = sbus_readw(qpti->qregs + MBOX1); case 1: param[0] = sbus_readw(qpti->qregs + MBOX0); } /* Clear RISC interrupt. */ tmp = sbus_readw(qpti->qregs + HCCTRL); tmp |= HCCTRL_CRIRQ; sbus_writew(tmp, qpti->qregs + HCCTRL); /* Release SBUS semaphore. */ tmp = sbus_readw(qpti->qregs + SBUS_SEMAPHORE); tmp &= ~(SBUS_SEMAPHORE_LCK); sbus_writew(tmp, qpti->qregs + SBUS_SEMAPHORE); /* We're done. */ return 0; } static inline void qlogicpti_set_hostdev_defaults(struct qlogicpti *qpti) { int i; qpti->host_param.initiator_scsi_id = qpti->scsi_id; qpti->host_param.bus_reset_delay = 3; qpti->host_param.retry_count = 0; qpti->host_param.retry_delay = 5; qpti->host_param.async_data_setup_time = 3; qpti->host_param.req_ack_active_negation = 1; qpti->host_param.data_line_active_negation = 1; qpti->host_param.data_dma_burst_enable = 1; qpti->host_param.command_dma_burst_enable = 1; qpti->host_param.tag_aging = 8; qpti->host_param.selection_timeout = 250; qpti->host_param.max_queue_depth = 256; for(i = 0; i < MAX_TARGETS; i++) { /* * disconnect, parity, arq, reneg on reset, and, oddly enough * tags...the midlayer's notion of tagged support has to match * our device settings, and since we base whether we enable a * tag on a per-cmnd basis upon what the midlayer sez, we * actually enable the capability here. */ qpti->dev_param[i].device_flags = 0xcd; qpti->dev_param[i].execution_throttle = 16; if (qpti->ultra) { qpti->dev_param[i].synchronous_period = 12; qpti->dev_param[i].synchronous_offset = 8; } else { qpti->dev_param[i].synchronous_period = 25; qpti->dev_param[i].synchronous_offset = 12; } qpti->dev_param[i].device_enable = 1; } /* this is very important to set! */ qpti->sbits = 1 << qpti->scsi_id; } static int qlogicpti_reset_hardware(struct Scsi_Host *host) { struct qlogicpti *qpti = (struct qlogicpti *) host->hostdata; u_short param[6]; unsigned short risc_code_addr; int loop_count, i; unsigned long flags; risc_code_addr = 0x1000; /* all load addresses are at 0x1000 */ spin_lock_irqsave(host->host_lock, flags); sbus_writew(HCCTRL_PAUSE, qpti->qregs + HCCTRL); /* Only reset the scsi bus if it is not free. */ if (sbus_readw(qpti->qregs + CPU_PCTRL) & CPU_PCTRL_BSY) { sbus_writew(CPU_ORIDE_RMOD, qpti->qregs + CPU_ORIDE); sbus_writew(CPU_CMD_BRESET, qpti->qregs + CPU_CMD); udelay(400); } sbus_writew(SBUS_CTRL_RESET, qpti->qregs + SBUS_CTRL); sbus_writew((DMA_CTRL_CCLEAR | DMA_CTRL_CIRQ), qpti->qregs + CMD_DMA_CTRL); sbus_writew((DMA_CTRL_CCLEAR | DMA_CTRL_CIRQ), qpti->qregs + DATA_DMA_CTRL); loop_count = DEFAULT_LOOP_COUNT; while (--loop_count && ((sbus_readw(qpti->qregs + MBOX0) & 0xff) == 0x04)) udelay(20); if (!loop_count) printk(KERN_EMERG "qlogicpti: reset_hardware loop timeout\n"); sbus_writew(HCCTRL_PAUSE, qpti->qregs + HCCTRL); set_sbus_cfg1(qpti); qlogicpti_enable_irqs(qpti); if (sbus_readw(qpti->qregs + RISC_PSR) & RISC_PSR_ULTRA) { qpti->ultra = 1; sbus_writew((RISC_MTREG_P0ULTRA | RISC_MTREG_P1ULTRA), qpti->qregs + RISC_MTREG); } else { qpti->ultra = 0; sbus_writew((RISC_MTREG_P0DFLT | RISC_MTREG_P1DFLT), qpti->qregs + RISC_MTREG); } /* reset adapter and per-device default values. */ /* do it after finding out whether we're ultra mode capable */ qlogicpti_set_hostdev_defaults(qpti); /* Release the RISC processor. */ sbus_writew(HCCTRL_REL, qpti->qregs + HCCTRL); /* Get RISC to start executing the firmware code. */ param[0] = MBOX_EXEC_FIRMWARE; param[1] = risc_code_addr; if (qlogicpti_mbox_command(qpti, param, 1)) { printk(KERN_EMERG "qlogicpti%d: Cannot execute ISP firmware.\n", qpti->qpti_id); spin_unlock_irqrestore(host->host_lock, flags); return 1; } /* Set initiator scsi ID. */ param[0] = MBOX_SET_INIT_SCSI_ID; param[1] = qpti->host_param.initiator_scsi_id; if (qlogicpti_mbox_command(qpti, param, 1) || (param[0] != MBOX_COMMAND_COMPLETE)) { printk(KERN_EMERG "qlogicpti%d: Cannot set initiator SCSI ID.\n", qpti->qpti_id); spin_unlock_irqrestore(host->host_lock, flags); return 1; } /* Initialize state of the queues, both hw and sw. */ qpti->req_in_ptr = qpti->res_out_ptr = 0; param[0] = MBOX_INIT_RES_QUEUE; param[1] = RES_QUEUE_LEN + 1; param[2] = (u_short) (qpti->res_dvma >> 16); param[3] = (u_short) (qpti->res_dvma & 0xffff); param[4] = param[5] = 0; if (qlogicpti_mbox_command(qpti, param, 1)) { printk(KERN_EMERG "qlogicpti%d: Cannot init response queue.\n", qpti->qpti_id); spin_unlock_irqrestore(host->host_lock, flags); return 1; } param[0] = MBOX_INIT_REQ_QUEUE; param[1] = QLOGICPTI_REQ_QUEUE_LEN + 1; param[2] = (u_short) (qpti->req_dvma >> 16); param[3] = (u_short) (qpti->req_dvma & 0xffff); param[4] = param[5] = 0; if (qlogicpti_mbox_command(qpti, param, 1)) { printk(KERN_EMERG "qlogicpti%d: Cannot init request queue.\n", qpti->qpti_id); spin_unlock_irqrestore(host->host_lock, flags); return 1; } param[0] = MBOX_SET_RETRY_COUNT; param[1] = qpti->host_param.retry_count; param[2] = qpti->host_param.retry_delay; qlogicpti_mbox_command(qpti, param, 0); param[0] = MBOX_SET_TAG_AGE_LIMIT; param[1] = qpti->host_param.tag_aging; qlogicpti_mbox_command(qpti, param, 0); for (i = 0; i < MAX_TARGETS; i++) { param[0] = MBOX_GET_DEV_QUEUE_PARAMS; param[1] = (i << 8); qlogicpti_mbox_command(qpti, param, 0); } param[0] = MBOX_GET_FIRMWARE_STATUS; qlogicpti_mbox_command(qpti, param, 0); param[0] = MBOX_SET_SELECT_TIMEOUT; param[1] = qpti->host_param.selection_timeout; qlogicpti_mbox_command(qpti, param, 0); for (i = 0; i < MAX_TARGETS; i++) { param[0] = MBOX_SET_TARGET_PARAMS; param[1] = (i << 8); param[2] = (qpti->dev_param[i].device_flags << 8); /* * Since we're now loading 1.31 f/w, force narrow/async. */ param[2] |= 0xc0; param[3] = 0; /* no offset, we do not have sync mode yet */ qlogicpti_mbox_command(qpti, param, 0); } /* * Always (sigh) do an initial bus reset (kicks f/w). */ param[0] = MBOX_BUS_RESET; param[1] = qpti->host_param.bus_reset_delay; qlogicpti_mbox_command(qpti, param, 0); qpti->send_marker = 1; spin_unlock_irqrestore(host->host_lock, flags); return 0; } #define PTI_RESET_LIMIT 400 static int __init qlogicpti_load_firmware(struct qlogicpti *qpti) { struct Scsi_Host *host = qpti->qhost; unsigned short csum = 0; unsigned short param[6]; unsigned short *risc_code, risc_code_addr, risc_code_length; unsigned long flags; int i, timeout; risc_code = &sbus_risc_code01[0]; risc_code_addr = 0x1000; /* all f/w modules load at 0x1000 */ risc_code_length = sbus_risc_code_length01; spin_lock_irqsave(host->host_lock, flags); /* Verify the checksum twice, one before loading it, and once * afterwards via the mailbox commands. */ for (i = 0; i < risc_code_length; i++) csum += risc_code[i]; if (csum) { spin_unlock_irqrestore(host->host_lock, flags); printk(KERN_EMERG "qlogicpti%d: Aieee, firmware checksum failed!", qpti->qpti_id); return 1; } sbus_writew(SBUS_CTRL_RESET, qpti->qregs + SBUS_CTRL); sbus_writew((DMA_CTRL_CCLEAR | DMA_CTRL_CIRQ), qpti->qregs + CMD_DMA_CTRL); sbus_writew((DMA_CTRL_CCLEAR | DMA_CTRL_CIRQ), qpti->qregs + DATA_DMA_CTRL); timeout = PTI_RESET_LIMIT; while (--timeout && (sbus_readw(qpti->qregs + SBUS_CTRL) & SBUS_CTRL_RESET)) udelay(20); if (!timeout) { spin_unlock_irqrestore(host->host_lock, flags); printk(KERN_EMERG "qlogicpti%d: Cannot reset the ISP.", qpti->qpti_id); return 1; } sbus_writew(HCCTRL_RESET, qpti->qregs + HCCTRL); mdelay(1); sbus_writew((SBUS_CTRL_GENAB | SBUS_CTRL_ERIRQ), qpti->qregs + SBUS_CTRL); set_sbus_cfg1(qpti); sbus_writew(0, qpti->qregs + SBUS_SEMAPHORE); if (sbus_readw(qpti->qregs + RISC_PSR) & RISC_PSR_ULTRA) { qpti->ultra = 1; sbus_writew((RISC_MTREG_P0ULTRA | RISC_MTREG_P1ULTRA), qpti->qregs + RISC_MTREG); } else { qpti->ultra = 0; sbus_writew((RISC_MTREG_P0DFLT | RISC_MTREG_P1DFLT), qpti->qregs + RISC_MTREG); } sbus_writew(HCCTRL_REL, qpti->qregs + HCCTRL); /* Pin lines are only stable while RISC is paused. */ sbus_writew(HCCTRL_PAUSE, qpti->qregs + HCCTRL); if (sbus_readw(qpti->qregs + CPU_PDIFF) & CPU_PDIFF_MODE) qpti->differential = 1; else qpti->differential = 0; sbus_writew(HCCTRL_REL, qpti->qregs + HCCTRL); /* This shouldn't be necessary- we've reset things so we should be running from the ROM now.. */ param[0] = MBOX_STOP_FIRMWARE; param[1] = param[2] = param[3] = param[4] = param[5] = 0; if (qlogicpti_mbox_command(qpti, param, 1)) { printk(KERN_EMERG "qlogicpti%d: Cannot stop firmware for reload.\n", qpti->qpti_id); spin_unlock_irqrestore(host->host_lock, flags); return 1; } /* Load it up.. */ for (i = 0; i < risc_code_length; i++) { param[0] = MBOX_WRITE_RAM_WORD; param[1] = risc_code_addr + i; param[2] = risc_code[i]; if (qlogicpti_mbox_command(qpti, param, 1) || param[0] != MBOX_COMMAND_COMPLETE) { printk("qlogicpti%d: Firmware dload failed, I'm bolixed!\n", qpti->qpti_id); spin_unlock_irqrestore(host->host_lock, flags); return 1; } } /* Reset the ISP again. */ sbus_writew(HCCTRL_RESET, qpti->qregs + HCCTRL); mdelay(1); qlogicpti_enable_irqs(qpti); sbus_writew(0, qpti->qregs + SBUS_SEMAPHORE); sbus_writew(HCCTRL_REL, qpti->qregs + HCCTRL); /* Ask ISP to verify the checksum of the new code. */ param[0] = MBOX_VERIFY_CHECKSUM; param[1] = risc_code_addr; if (qlogicpti_mbox_command(qpti, param, 1) || (param[0] != MBOX_COMMAND_COMPLETE)) { printk(KERN_EMERG "qlogicpti%d: New firmware csum failure!\n", qpti->qpti_id); spin_unlock_irqrestore(host->host_lock, flags); return 1; } /* Start using newly downloaded firmware. */ param[0] = MBOX_EXEC_FIRMWARE; param[1] = risc_code_addr; qlogicpti_mbox_command(qpti, param, 1); param[0] = MBOX_ABOUT_FIRMWARE; if (qlogicpti_mbox_command(qpti, param, 1) || (param[0] != MBOX_COMMAND_COMPLETE)) { printk(KERN_EMERG "qlogicpti%d: AboutFirmware cmd fails.\n", qpti->qpti_id); spin_unlock_irqrestore(host->host_lock, flags); return 1; } /* Snag the major and minor revisions from the result. */ qpti->fware_majrev = param[1]; qpti->fware_minrev = param[2]; qpti->fware_micrev = param[3]; /* Set the clock rate */ param[0] = MBOX_SET_CLOCK_RATE; param[1] = qpti->clock; if (qlogicpti_mbox_command(qpti, param, 1) || (param[0] != MBOX_COMMAND_COMPLETE)) { printk(KERN_EMERG "qlogicpti%d: could not set clock rate.\n", qpti->qpti_id); spin_unlock_irqrestore(host->host_lock, flags); return 1; } if (qpti->is_pti != 0) { /* Load scsi initiator ID and interrupt level into sbus static ram. */ param[0] = MBOX_WRITE_RAM_WORD; param[1] = 0xff80; param[2] = (unsigned short) qpti->scsi_id; qlogicpti_mbox_command(qpti, param, 1); param[0] = MBOX_WRITE_RAM_WORD; param[1] = 0xff00; param[2] = (unsigned short) 3; qlogicpti_mbox_command(qpti, param, 1); } spin_unlock_irqrestore(host->host_lock, flags); return 0; } static int qlogicpti_verify_tmon(struct qlogicpti *qpti) { int curstat = sbus_readb(qpti->sreg); curstat &= 0xf0; if (!(curstat & SREG_FUSE) && (qpti->swsreg & SREG_FUSE)) printk("qlogicpti%d: Fuse returned to normal state.\n", qpti->qpti_id); if (!(curstat & SREG_TPOWER) && (qpti->swsreg & SREG_TPOWER)) printk("qlogicpti%d: termpwr back to normal state.\n", qpti->qpti_id); if (curstat != qpti->swsreg) { int error = 0; if (curstat & SREG_FUSE) { error++; printk("qlogicpti%d: Fuse is open!\n", qpti->qpti_id); } if (curstat & SREG_TPOWER) { error++; printk("qlogicpti%d: termpwr failure\n", qpti->qpti_id); } if (qpti->differential && (curstat & SREG_DSENSE) != SREG_DSENSE) { error++; printk("qlogicpti%d: You have a single ended device on a " "differential bus! Please fix!\n", qpti->qpti_id); } qpti->swsreg = curstat; return error; } return 0; } static irqreturn_t qpti_intr(int irq, void *dev_id, struct pt_regs *regs); static void __init qpti_chain_add(struct qlogicpti *qpti) { spin_lock_irq(&qptichain_lock); if (qptichain != NULL) { struct qlogicpti *qlink = qptichain; while(qlink->next) qlink = qlink->next; qlink->next = qpti; } else { qptichain = qpti; } qpti->next = NULL; spin_unlock_irq(&qptichain_lock); } static void __init qpti_chain_del(struct qlogicpti *qpti) { spin_lock_irq(&qptichain_lock); if (qptichain == qpti) { qptichain = qpti->next; } else { struct qlogicpti *qlink = qptichain; while(qlink->next != qpti) qlink = qlink->next; qlink->next = qpti->next; } qpti->next = NULL; spin_unlock_irq(&qptichain_lock); } static int __init qpti_map_regs(struct qlogicpti *qpti) { struct sbus_dev *sdev = qpti->sdev; qpti->qregs = sbus_ioremap(&sdev->resource[0], 0, sdev->reg_addrs[0].reg_size, "PTI Qlogic/ISP"); if (!qpti->qregs) { printk("PTI: Qlogic/ISP registers are unmappable\n"); return -1; } if (qpti->is_pti) { qpti->sreg = sbus_ioremap(&sdev->resource[0], (16 * 4096), sizeof(unsigned char), "PTI Qlogic/ISP statreg"); if (!qpti->sreg) { printk("PTI: Qlogic/ISP status register is unmappable\n"); return -1; } } return 0; } static int __init qpti_register_irq(struct qlogicpti *qpti) { struct sbus_dev *sdev = qpti->sdev; qpti->qhost->irq = qpti->irq = sdev->irqs[0]; /* We used to try various overly-clever things to * reduce the interrupt processing overhead on * sun4c/sun4m when multiple PTI's shared the * same IRQ. It was too complex and messy to * sanely maintain. */ if (request_irq(qpti->irq, qpti_intr, SA_SHIRQ, "Qlogic/PTI", qpti)) goto fail; printk("qpti%d: IRQ %s ", qpti->qpti_id, __irq_itoa(qpti->irq)); return 0; fail: printk("qpti%d: Cannot acquire irq line\n", qpti->qpti_id); return -1; } static void __init qpti_get_scsi_id(struct qlogicpti *qpti) { qpti->scsi_id = prom_getintdefault(qpti->prom_node, "initiator-id", -1); if (qpti->scsi_id == -1) qpti->scsi_id = prom_getintdefault(qpti->prom_node, "scsi-initiator-id", -1); if (qpti->scsi_id == -1) qpti->scsi_id = prom_getintdefault(qpti->sdev->bus->prom_node, "scsi-initiator-id", 7); qpti->qhost->this_id = qpti->scsi_id; qpti->qhost->max_sectors = 64; printk("SCSI ID %d ", qpti->scsi_id); } static void qpti_get_bursts(struct qlogicpti *qpti) { struct sbus_dev *sdev = qpti->sdev; u8 bursts, bmask; bursts = prom_getintdefault(qpti->prom_node, "burst-sizes", 0xff); bmask = prom_getintdefault(sdev->bus->prom_node, "burst-sizes", 0xff); if (bmask != 0xff) bursts &= bmask; if (bursts == 0xff || (bursts & DMA_BURST16) == 0 || (bursts & DMA_BURST32) == 0) bursts = (DMA_BURST32 - 1); qpti->bursts = bursts; } static void qpti_get_clock(struct qlogicpti *qpti) { unsigned int cfreq; /* Check for what the clock input to this card is. * Default to 40Mhz. */ cfreq = prom_getintdefault(qpti->prom_node,"clock-frequency",40000000); qpti->clock = (cfreq + 500000)/1000000; if (qpti->clock == 0) /* bullshit */ qpti->clock = 40; } /* The request and response queues must each be aligned * on a page boundary. */ static int __init qpti_map_queues(struct qlogicpti *qpti) { struct sbus_dev *sdev = qpti->sdev; #define QSIZE(entries) (((entries) + 1) * QUEUE_ENTRY_LEN) qpti->res_cpu = sbus_alloc_consistent(sdev, QSIZE(RES_QUEUE_LEN), &qpti->res_dvma); if (qpti->res_cpu == NULL || qpti->res_dvma == 0) { printk("QPTI: Cannot map response queue.\n"); return -1; } qpti->req_cpu = sbus_alloc_consistent(sdev, QSIZE(QLOGICPTI_REQ_QUEUE_LEN), &qpti->req_dvma); if (qpti->req_cpu == NULL || qpti->req_dvma == 0) { sbus_free_consistent(sdev, QSIZE(RES_QUEUE_LEN), qpti->res_cpu, qpti->res_dvma); printk("QPTI: Cannot map request queue.\n"); return -1; } memset(qpti->res_cpu, 0, QSIZE(RES_QUEUE_LEN)); memset(qpti->req_cpu, 0, QSIZE(QLOGICPTI_REQ_QUEUE_LEN)); return 0; } /* Detect all PTI Qlogic ISP's in the machine. */ static int __init qlogicpti_detect(struct scsi_host_template *tpnt) { struct qlogicpti *qpti; struct Scsi_Host *qpti_host; struct sbus_bus *sbus; struct sbus_dev *sdev; int nqptis = 0, nqptis_in_use = 0; tpnt->proc_name = "qlogicpti"; for_each_sbus(sbus) { for_each_sbusdev(sdev, sbus) { /* Is this a red snapper? */ if (strcmp(sdev->prom_name, "ptisp") && strcmp(sdev->prom_name, "PTI,ptisp") && strcmp(sdev->prom_name, "QLGC,isp") && strcmp(sdev->prom_name, "SUNW,isp")) continue; /* Sometimes Antares cards come up not completely * setup, and we get a report of a zero IRQ. * Skip over them in such cases so we survive. */ if (sdev->irqs[0] == 0) { printk("qpti%d: Adapter reports no interrupt, " "skipping over this card.", nqptis); continue; } /* Yep, register and allocate software state. */ qpti_host = scsi_register(tpnt, sizeof(struct qlogicpti)); if (!qpti_host) { printk("QPTI: Cannot register PTI Qlogic ISP SCSI host"); continue; } qpti = (struct qlogicpti *) qpti_host->hostdata; /* We are wide capable, 16 targets. */ qpti_host->max_id = MAX_TARGETS; /* Setup back pointers and misc. state. */ qpti->qhost = qpti_host; qpti->sdev = sdev; qpti->qpti_id = nqptis++; qpti->prom_node = sdev->prom_node; prom_getstring(qpti->prom_node, "name", qpti->prom_name, sizeof(qpti->prom_name)); /* This is not correct, actually. There's a switch * on the PTI cards that put them into "emulation" * mode- i.e., report themselves as QLGC,isp * instead of PTI,ptisp. The only real substantive * difference between non-pti and pti cards is * the tmon register. Which is possibly even * there for Qlogic cards, but non-functional. */ qpti->is_pti = (strcmp (qpti->prom_name, "QLGC,isp") != 0); qpti_chain_add(qpti); if (qpti_map_regs(qpti) < 0) goto fail_unlink; if (qpti_register_irq(qpti) < 0) goto fail_unmap_regs; qpti_get_scsi_id(qpti); qpti_get_bursts(qpti); qpti_get_clock(qpti); /* Clear out scsi_cmnd array. */ memset(qpti->cmd_slots, 0, sizeof(qpti->cmd_slots)); if (qpti_map_queues(qpti) < 0) goto fail_free_irq; /* Load the firmware. */ if (qlogicpti_load_firmware(qpti)) goto fail_unmap_queues; if (qpti->is_pti) { /* Check the PTI status reg. */ if (qlogicpti_verify_tmon(qpti)) goto fail_unmap_queues; } /* Reset the ISP and init res/req queues. */ if (qlogicpti_reset_hardware(qpti_host)) goto fail_unmap_queues; printk("(Firmware v%d.%d.%d)", qpti->fware_majrev, qpti->fware_minrev, qpti->fware_micrev); { char buffer[60]; prom_getstring (qpti->prom_node, "isp-fcode", buffer, 60); if (buffer[0]) printk("(Firmware %s)", buffer); if (prom_getbool(qpti->prom_node, "differential")) qpti->differential = 1; } printk (" [%s Wide, using %s interface]\n", (qpti->ultra ? "Ultra" : "Fast"), (qpti->differential ? "differential" : "single ended")); nqptis_in_use++; continue; fail_unmap_queues: #define QSIZE(entries) (((entries) + 1) * QUEUE_ENTRY_LEN) sbus_free_consistent(qpti->sdev, QSIZE(RES_QUEUE_LEN), qpti->res_cpu, qpti->res_dvma); sbus_free_consistent(qpti->sdev, QSIZE(QLOGICPTI_REQ_QUEUE_LEN), qpti->req_cpu, qpti->req_dvma); #undef QSIZE fail_free_irq: free_irq(qpti->irq, qpti); fail_unmap_regs: sbus_iounmap(qpti->qregs, qpti->sdev->reg_addrs[0].reg_size); if (qpti->is_pti) sbus_iounmap(qpti->sreg, sizeof(unsigned char)); fail_unlink: qpti_chain_del(qpti); scsi_unregister(qpti->qhost); } } if (nqptis) printk("QPTI: Total of %d PTI Qlogic/ISP hosts found, %d actually in use.\n", nqptis, nqptis_in_use); qptis_running = nqptis_in_use; return nqptis; } static int qlogicpti_release(struct Scsi_Host *host) { struct qlogicpti *qpti = (struct qlogicpti *) host->hostdata; /* Remove visibility from IRQ handlers. */ qpti_chain_del(qpti); /* Shut up the card. */ sbus_writew(0, qpti->qregs + SBUS_CTRL); /* Free IRQ handler and unmap Qlogic,ISP and PTI status regs. */ free_irq(qpti->irq, qpti); #define QSIZE(entries) (((entries) + 1) * QUEUE_ENTRY_LEN) sbus_free_consistent(qpti->sdev, QSIZE(RES_QUEUE_LEN), qpti->res_cpu, qpti->res_dvma); sbus_free_consistent(qpti->sdev, QSIZE(QLOGICPTI_REQ_QUEUE_LEN), qpti->req_cpu, qpti->req_dvma); #undef QSIZE sbus_iounmap(qpti->qregs, qpti->sdev->reg_addrs[0].reg_size); if (qpti->is_pti) sbus_iounmap(qpti->sreg, sizeof(unsigned char)); return 0; } const char *qlogicpti_info(struct Scsi_Host *host) { static char buf[80]; struct qlogicpti *qpti = (struct qlogicpti *) host->hostdata; sprintf(buf, "PTI Qlogic,ISP SBUS SCSI irq %s regs at %p", __irq_itoa(qpti->qhost->irq), qpti->qregs); return buf; } /* I am a certified frobtronicist. */ static inline void marker_frob(struct Command_Entry *cmd) { struct Marker_Entry *marker = (struct Marker_Entry *) cmd; memset(marker, 0, sizeof(struct Marker_Entry)); marker->hdr.entry_cnt = 1; marker->hdr.entry_type = ENTRY_MARKER; marker->modifier = SYNC_ALL; marker->rsvd = 0; } static inline void cmd_frob(struct Command_Entry *cmd, struct scsi_cmnd *Cmnd, struct qlogicpti *qpti) { memset(cmd, 0, sizeof(struct Command_Entry)); cmd->hdr.entry_cnt = 1; cmd->hdr.entry_type = ENTRY_COMMAND; cmd->target_id = Cmnd->device->id; cmd->target_lun = Cmnd->device->lun; cmd->cdb_length = Cmnd->cmd_len; cmd->control_flags = 0; if (Cmnd->device->tagged_supported) { if (qpti->cmd_count[Cmnd->device->id] == 0) qpti->tag_ages[Cmnd->device->id] = jiffies; if ((jiffies - qpti->tag_ages[Cmnd->device->id]) > (5*HZ)) { cmd->control_flags = CFLAG_ORDERED_TAG; qpti->tag_ages[Cmnd->device->id] = jiffies; } else cmd->control_flags = CFLAG_SIMPLE_TAG; } if ((Cmnd->cmnd[0] == WRITE_6) || (Cmnd->cmnd[0] == WRITE_10) || (Cmnd->cmnd[0] == WRITE_12)) cmd->control_flags |= CFLAG_WRITE; else cmd->control_flags |= CFLAG_READ; cmd->time_out = 30; memcpy(cmd->cdb, Cmnd->cmnd, Cmnd->cmd_len); } /* Do it to it baby. */ static inline int load_cmd(struct scsi_cmnd *Cmnd, struct Command_Entry *cmd, struct qlogicpti *qpti, u_int in_ptr, u_int out_ptr) { struct dataseg *ds; struct scatterlist *sg; int i, n; if (Cmnd->use_sg) { int sg_count; sg = (struct scatterlist *) Cmnd->buffer; sg_count = sbus_map_sg(qpti->sdev, sg, Cmnd->use_sg, Cmnd->sc_data_direction); ds = cmd->dataseg; cmd->segment_cnt = sg_count; /* Fill in first four sg entries: */ n = sg_count; if (n > 4) n = 4; for (i = 0; i < n; i++, sg++) { ds[i].d_base = sg_dma_address(sg); ds[i].d_count = sg_dma_len(sg); } sg_count -= 4; while (sg_count > 0) { struct Continuation_Entry *cont; ++cmd->hdr.entry_cnt; cont = (struct Continuation_Entry *) &qpti->req_cpu[in_ptr]; in_ptr = NEXT_REQ_PTR(in_ptr); if (in_ptr == out_ptr) return -1; cont->hdr.entry_type = ENTRY_CONTINUATION; cont->hdr.entry_cnt = 0; cont->hdr.sys_def_1 = 0; cont->hdr.flags = 0; cont->reserved = 0; ds = cont->dataseg; n = sg_count; if (n > 7) n = 7; for (i = 0; i < n; i++, sg++) { ds[i].d_base = sg_dma_address(sg); ds[i].d_count = sg_dma_len(sg); } sg_count -= n; } } else if (Cmnd->request_bufflen) { Cmnd->SCp.ptr = (char *)(unsigned long) sbus_map_single(qpti->sdev, Cmnd->request_buffer, Cmnd->request_bufflen, Cmnd->sc_data_direction); cmd->dataseg[0].d_base = (u32) ((unsigned long)Cmnd->SCp.ptr); cmd->dataseg[0].d_count = Cmnd->request_bufflen; cmd->segment_cnt = 1; } else { cmd->dataseg[0].d_base = 0; cmd->dataseg[0].d_count = 0; cmd->segment_cnt = 1; /* Shouldn't this be 0? */ } /* Committed, record Scsi_Cmd so we can find it later. */ cmd->handle = in_ptr; qpti->cmd_slots[in_ptr] = Cmnd; qpti->cmd_count[Cmnd->device->id]++; sbus_writew(in_ptr, qpti->qregs + MBOX4); qpti->req_in_ptr = in_ptr; return in_ptr; } static inline void update_can_queue(struct Scsi_Host *host, u_int in_ptr, u_int out_ptr) { /* Temporary workaround until bug is found and fixed (one bug has been found already, but fixing it makes things even worse) -jj */ int num_free = QLOGICPTI_REQ_QUEUE_LEN - REQ_QUEUE_DEPTH(in_ptr, out_ptr) - 64; host->can_queue = host->host_busy + num_free; host->sg_tablesize = QLOGICPTI_MAX_SG(num_free); } static unsigned int scsi_rbuf_get(struct scsi_cmnd *cmd, unsigned char **buf_out) { unsigned char *buf; unsigned int buflen; if (cmd->use_sg) { struct scatterlist *sg; sg = (struct scatterlist *) cmd->request_buffer; buf = kmap_atomic(sg->page, KM_IRQ0) + sg->offset; buflen = sg->length; } else { buf = cmd->request_buffer; buflen = cmd->request_bufflen; } *buf_out = buf; return buflen; } static void scsi_rbuf_put(struct scsi_cmnd *cmd, unsigned char *buf) { if (cmd->use_sg) { struct scatterlist *sg; sg = (struct scatterlist *) cmd->request_buffer; kunmap_atomic(buf - sg->offset, KM_IRQ0); } } /* * Until we scan the entire bus with inquiries, go throught this fella... */ static void ourdone(struct scsi_cmnd *Cmnd) { struct qlogicpti *qpti = (struct qlogicpti *) Cmnd->device->host->hostdata; int tgt = Cmnd->device->id; void (*done) (struct scsi_cmnd *); /* This grot added by DaveM, blame him for ugliness. * The issue is that in the 2.3.x driver we use the * host_scribble portion of the scsi command as a * completion linked list at interrupt service time, * so we have to store the done function pointer elsewhere. */ done = (void (*)(struct scsi_cmnd *)) (((unsigned long) Cmnd->SCp.Message) #ifdef __sparc_v9__ | ((unsigned long) Cmnd->SCp.Status << 32UL) #endif ); if ((qpti->sbits & (1 << tgt)) == 0) { int ok = host_byte(Cmnd->result) == DID_OK; if (Cmnd->cmnd[0] == 0x12 && ok) { unsigned char *iqd; unsigned int iqd_len; iqd_len = scsi_rbuf_get(Cmnd, &iqd); /* tags handled in midlayer */ /* enable sync mode? */ if (iqd[7] & 0x10) { qpti->dev_param[tgt].device_flags |= 0x10; } else { qpti->dev_param[tgt].synchronous_offset = 0; qpti->dev_param[tgt].synchronous_period = 0; } /* are we wide capable? */ if (iqd[7] & 0x20) { qpti->dev_param[tgt].device_flags |= 0x20; } scsi_rbuf_put(Cmnd, iqd); qpti->sbits |= (1 << tgt); } else if (!ok) { qpti->sbits |= (1 << tgt); } } done(Cmnd); } static int qlogicpti_queuecommand(struct scsi_cmnd *Cmnd, void (*done)(struct scsi_cmnd *)); static int qlogicpti_queuecommand_slow(struct scsi_cmnd *Cmnd, void (*done)(struct scsi_cmnd *)) { struct qlogicpti *qpti = (struct qlogicpti *) Cmnd->device->host->hostdata; /* * done checking this host adapter? * If not, then rewrite the command * to finish through ourdone so we * can peek at Inquiry data results. */ if (qpti->sbits && qpti->sbits != 0xffff) { /* See above about in ourdone this ugliness... */ Cmnd->SCp.Message = ((unsigned long)done) & 0xffffffff; #ifdef CONFIG_SPARC64 Cmnd->SCp.Status = ((unsigned long)done >> 32UL) & 0xffffffff; #endif return qlogicpti_queuecommand(Cmnd, ourdone); } /* * We've peeked at all targets for this bus- time * to set parameters for devices for real now. */ if (qpti->sbits == 0xffff) { int i; for(i = 0; i < MAX_TARGETS; i++) { u_short param[6]; param[0] = MBOX_SET_TARGET_PARAMS; param[1] = (i << 8); param[2] = (qpti->dev_param[i].device_flags << 8); if (qpti->dev_param[i].device_flags & 0x10) { param[3] = (qpti->dev_param[i].synchronous_offset << 8) | qpti->dev_param[i].synchronous_period; } else { param[3] = 0; } (void) qlogicpti_mbox_command(qpti, param, 0); } /* * set to zero so any traverse through ourdone * doesn't start the whole process again, */ qpti->sbits = 0; } /* check to see if we're done with all adapters... */ for (qpti = qptichain; qpti != NULL; qpti = qpti->next) { if (qpti->sbits) { break; } } /* * if we hit the end of the chain w/o finding adapters still * capability-configuring, then we're done with all adapters * and can rock on.. */ if (qpti == NULL) Cmnd->device->host->hostt->queuecommand = qlogicpti_queuecommand; return qlogicpti_queuecommand(Cmnd, done); } /* * The middle SCSI layer ensures that queuecommand never gets invoked * concurrently with itself or the interrupt handler (though the * interrupt handler may call this routine as part of * request-completion handling). * * "This code must fly." -davem */ static int qlogicpti_queuecommand(struct scsi_cmnd *Cmnd, void (*done)(struct scsi_cmnd *)) { struct Scsi_Host *host = Cmnd->device->host; struct qlogicpti *qpti = (struct qlogicpti *) host->hostdata; struct Command_Entry *cmd; u_int out_ptr; int in_ptr; Cmnd->scsi_done = done; in_ptr = qpti->req_in_ptr; cmd = (struct Command_Entry *) &qpti->req_cpu[in_ptr]; out_ptr = sbus_readw(qpti->qregs + MBOX4); in_ptr = NEXT_REQ_PTR(in_ptr); if (in_ptr == out_ptr) goto toss_command; if (qpti->send_marker) { marker_frob(cmd); qpti->send_marker = 0; if (NEXT_REQ_PTR(in_ptr) == out_ptr) { sbus_writew(in_ptr, qpti->qregs + MBOX4); qpti->req_in_ptr = in_ptr; goto toss_command; } cmd = (struct Command_Entry *) &qpti->req_cpu[in_ptr]; in_ptr = NEXT_REQ_PTR(in_ptr); } cmd_frob(cmd, Cmnd, qpti); if ((in_ptr = load_cmd(Cmnd, cmd, qpti, in_ptr, out_ptr)) == -1) goto toss_command; update_can_queue(host, in_ptr, out_ptr); return 0; toss_command: printk(KERN_EMERG "qlogicpti%d: request queue overflow\n", qpti->qpti_id); /* Unfortunately, unless you use the new EH code, which * we don't, the midlayer will ignore the return value, * which is insane. We pick up the pieces like this. */ Cmnd->result = DID_BUS_BUSY; done(Cmnd); return 1; } static int qlogicpti_return_status(struct Status_Entry *sts, int id) { int host_status = DID_ERROR; switch (sts->completion_status) { case CS_COMPLETE: host_status = DID_OK; break; case CS_INCOMPLETE: if (!(sts->state_flags & SF_GOT_BUS)) host_status = DID_NO_CONNECT; else if (!(sts->state_flags & SF_GOT_TARGET)) host_status = DID_BAD_TARGET; else if (!(sts->state_flags & SF_SENT_CDB)) host_status = DID_ERROR; else if (!(sts->state_flags & SF_TRANSFERRED_DATA)) host_status = DID_ERROR; else if (!(sts->state_flags & SF_GOT_STATUS)) host_status = DID_ERROR; else if (!(sts->state_flags & SF_GOT_SENSE)) host_status = DID_ERROR; break; case CS_DMA_ERROR: case CS_TRANSPORT_ERROR: host_status = DID_ERROR; break; case CS_RESET_OCCURRED: case CS_BUS_RESET: host_status = DID_RESET; break; case CS_ABORTED: host_status = DID_ABORT; break; case CS_TIMEOUT: host_status = DID_TIME_OUT; break; case CS_DATA_OVERRUN: case CS_COMMAND_OVERRUN: case CS_STATUS_OVERRUN: case CS_BAD_MESSAGE: case CS_NO_MESSAGE_OUT: case CS_EXT_ID_FAILED: case CS_IDE_MSG_FAILED: case CS_ABORT_MSG_FAILED: case CS_NOP_MSG_FAILED: case CS_PARITY_ERROR_MSG_FAILED: case CS_DEVICE_RESET_MSG_FAILED: case CS_ID_MSG_FAILED: case CS_UNEXP_BUS_FREE: host_status = DID_ERROR; break; case CS_DATA_UNDERRUN: host_status = DID_OK; break; default: printk(KERN_EMERG "qpti%d: unknown completion status 0x%04x\n", id, sts->completion_status); host_status = DID_ERROR; break; } return (sts->scsi_status & STATUS_MASK) | (host_status << 16); } static struct scsi_cmnd *qlogicpti_intr_handler(struct qlogicpti *qpti) { struct scsi_cmnd *Cmnd, *done_queue = NULL; struct Status_Entry *sts; u_int in_ptr, out_ptr; if (!(sbus_readw(qpti->qregs + SBUS_STAT) & SBUS_STAT_RINT)) return NULL; in_ptr = sbus_readw(qpti->qregs + MBOX5); sbus_writew(HCCTRL_CRIRQ, qpti->qregs + HCCTRL); if (sbus_readw(qpti->qregs + SBUS_SEMAPHORE) & SBUS_SEMAPHORE_LCK) { switch (sbus_readw(qpti->qregs + MBOX0)) { case ASYNC_SCSI_BUS_RESET: case EXECUTION_TIMEOUT_RESET: qpti->send_marker = 1; break; case INVALID_COMMAND: case HOST_INTERFACE_ERROR: case COMMAND_ERROR: case COMMAND_PARAM_ERROR: break; }; sbus_writew(0, qpti->qregs + SBUS_SEMAPHORE); } /* This looks like a network driver! */ out_ptr = qpti->res_out_ptr; while (out_ptr != in_ptr) { u_int cmd_slot; sts = (struct Status_Entry *) &qpti->res_cpu[out_ptr]; out_ptr = NEXT_RES_PTR(out_ptr); /* We store an index in the handle, not the pointer in * some form. This avoids problems due to the fact * that the handle provided is only 32-bits. -DaveM */ cmd_slot = sts->handle; Cmnd = qpti->cmd_slots[cmd_slot]; qpti->cmd_slots[cmd_slot] = NULL; if (sts->completion_status == CS_RESET_OCCURRED || sts->completion_status == CS_ABORTED || (sts->status_flags & STF_BUS_RESET)) qpti->send_marker = 1; if (sts->state_flags & SF_GOT_SENSE) memcpy(Cmnd->sense_buffer, sts->req_sense_data, sizeof(Cmnd->sense_buffer)); if (sts->hdr.entry_type == ENTRY_STATUS) Cmnd->result = qlogicpti_return_status(sts, qpti->qpti_id); else Cmnd->result = DID_ERROR << 16; if (Cmnd->use_sg) { sbus_unmap_sg(qpti->sdev, (struct scatterlist *)Cmnd->buffer, Cmnd->use_sg, Cmnd->sc_data_direction); } else { sbus_unmap_single(qpti->sdev, (__u32)((unsigned long)Cmnd->SCp.ptr), Cmnd->request_bufflen, Cmnd->sc_data_direction); } qpti->cmd_count[Cmnd->device->id]--; sbus_writew(out_ptr, qpti->qregs + MBOX5); Cmnd->host_scribble = (unsigned char *) done_queue; done_queue = Cmnd; } qpti->res_out_ptr = out_ptr; return done_queue; } static irqreturn_t qpti_intr(int irq, void *dev_id, struct pt_regs *regs) { struct qlogicpti *qpti = dev_id; unsigned long flags; struct scsi_cmnd *dq; spin_lock_irqsave(qpti->qhost->host_lock, flags); dq = qlogicpti_intr_handler(qpti); if (dq != NULL) { do { struct scsi_cmnd *next; next = (struct scsi_cmnd *) dq->host_scribble; dq->scsi_done(dq); dq = next; } while (dq != NULL); } spin_unlock_irqrestore(qpti->qhost->host_lock, flags); return IRQ_HANDLED; } static int qlogicpti_abort(struct scsi_cmnd *Cmnd) { u_short param[6]; struct Scsi_Host *host = Cmnd->device->host; struct qlogicpti *qpti = (struct qlogicpti *) host->hostdata; int return_status = SUCCESS; u32 cmd_cookie; int i; printk(KERN_WARNING "qlogicpti : Aborting cmd for tgt[%d] lun[%d]\n", (int)Cmnd->device->id, (int)Cmnd->device->lun); qlogicpti_disable_irqs(qpti); /* Find the 32-bit cookie we gave to the firmware for * this command. */ for (i = 0; i < QLOGICPTI_REQ_QUEUE_LEN + 1; i++) if (qpti->cmd_slots[i] == Cmnd) break; cmd_cookie = i; param[0] = MBOX_ABORT; param[1] = (((u_short) Cmnd->device->id) << 8) | Cmnd->device->lun; param[2] = cmd_cookie >> 16; param[3] = cmd_cookie & 0xffff; if (qlogicpti_mbox_command(qpti, param, 0) || (param[0] != MBOX_COMMAND_COMPLETE)) { printk(KERN_EMERG "qlogicpti : scsi abort failure: %x\n", param[0]); return_status = FAILED; } qlogicpti_enable_irqs(qpti); return return_status; } static int qlogicpti_reset(struct scsi_cmnd *Cmnd) { u_short param[6]; struct Scsi_Host *host = Cmnd->device->host; struct qlogicpti *qpti = (struct qlogicpti *) host->hostdata; int return_status = SUCCESS; printk(KERN_WARNING "qlogicpti : Resetting SCSI bus!\n"); qlogicpti_disable_irqs(qpti); param[0] = MBOX_BUS_RESET; param[1] = qpti->host_param.bus_reset_delay; if (qlogicpti_mbox_command(qpti, param, 0) || (param[0] != MBOX_COMMAND_COMPLETE)) { printk(KERN_EMERG "qlogicisp : scsi bus reset failure: %x\n", param[0]); return_status = FAILED; } qlogicpti_enable_irqs(qpti); return return_status; } static struct scsi_host_template driver_template = { .detect = qlogicpti_detect, .release = qlogicpti_release, .info = qlogicpti_info, .queuecommand = qlogicpti_queuecommand_slow, .eh_abort_handler = qlogicpti_abort, .eh_bus_reset_handler = qlogicpti_reset, .can_queue = QLOGICPTI_REQ_QUEUE_LEN, .this_id = 7, .sg_tablesize = QLOGICPTI_MAX_SG(QLOGICPTI_REQ_QUEUE_LEN), .cmd_per_lun = 1, .use_clustering = ENABLE_CLUSTERING, }; #include "scsi_module.c" MODULE_LICENSE("GPL");