diff options
Diffstat (limited to 'linux/src/drivers/scsi/qlogicisp.c')
| -rw-r--r-- | linux/src/drivers/scsi/qlogicisp.c | 1768 |
1 files changed, 1768 insertions, 0 deletions
diff --git a/linux/src/drivers/scsi/qlogicisp.c b/linux/src/drivers/scsi/qlogicisp.c new file mode 100644 index 0000000..72aa543 --- /dev/null +++ b/linux/src/drivers/scsi/qlogicisp.c @@ -0,0 +1,1768 @@ +/* + * QLogic ISP1020 Intelligent SCSI Processor Driver (PCI) + * Written by Erik H. Moe, ehm@cris.com + * Copyright 1995, Erik H. Moe + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2, or (at your option) any + * later version. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + */ + +/* Renamed and updated to 1.3.x by Michael Griffith <grif@cs.ucr.edu> */ + +/* + * $Date: 1999/04/26 05:54:52 $ + * $Revision: 1.1 $ + * + * $Log: isp1020.c,v $ + * Revision 0.5 1995/09/22 02:23:15 root + * do auto request sense + * + * Revision 0.4 1995/08/07 04:44:33 root + * supply firmware with driver. + * numerous bug fixes/general cleanup of code. + * + * Revision 0.3 1995/07/16 16:15:39 root + * added reset/abort code. + * + * Revision 0.2 1995/06/29 03:14:19 root + * fixed biosparam. + * added queue protocol. + * + * Revision 0.1 1995/06/25 01:55:45 root + * Initial release. + * + */ + +#include <linux/blk.h> +#include <linux/kernel.h> +#include <linux/string.h> +#include <linux/ioport.h> +#include <linux/sched.h> +#include <linux/types.h> +#include <linux/bios32.h> +#include <linux/pci.h> +#include <linux/delay.h> +#include <linux/unistd.h> +#include <asm/io.h> +#include <asm/irq.h> + +#include "sd.h" +#include "hosts.h" +#include "qlogicisp.h" + +/* Configuration section *****************************************************/ + +/* Set the following macro to 1 to reload the ISP1020's firmware. This is + the latest firmware provided by QLogic. This may be an earlier/later + revision than supplied by your board. */ + +#define RELOAD_FIRMWARE 1 + +/* Set the following macro to 1 to reload the ISP1020's defaults from nvram. + If you are not sure of your settings, leave this alone, the driver will + use a set of 'safe' defaults */ + +#define USE_NVRAM_DEFAULTS 0 + +/* Macros used for debugging */ + +#define DEBUG_ISP1020 0 +#define DEBUG_ISP1020_INT 0 +#define DEBUG_ISP1020_SETUP 0 +#define TRACE_ISP 0 + +#define DEFAULT_LOOP_COUNT 1000000 + +/* End Configuration section *************************************************/ + +#include <linux/module.h> + +#if TRACE_ISP + +# define TRACE_BUF_LEN (32*1024) + +struct { + u_long next; + struct { + u_long time; + u_int index; + u_int addr; + u_char * name; + } buf[TRACE_BUF_LEN]; +} trace; + +#define TRACE(w, i, a) \ +{ \ + unsigned long flags; \ + \ + save_flags(flags); \ + cli(); \ + trace.buf[trace.next].name = (w); \ + trace.buf[trace.next].time = jiffies; \ + trace.buf[trace.next].index = (i); \ + trace.buf[trace.next].addr = (long) (a); \ + trace.next = (trace.next + 1) & (TRACE_BUF_LEN - 1); \ + restore_flags(flags); \ +} + +#else +# define TRACE(w, i, a) +#endif + +#if DEBUG_ISP1020 +#define ENTER(x) printk("isp1020 : entering %s()\n", x); +#define LEAVE(x) printk("isp1020 : leaving %s()\n", x); +#define DEBUG(x) x +#else +#define ENTER(x) +#define LEAVE(x) +#define DEBUG(x) +#endif /* DEBUG_ISP1020 */ + +#if DEBUG_ISP1020_INTR +#define ENTER_INTR(x) printk("isp1020 : entering %s()\n", x); +#define LEAVE_INTR(x) printk("isp1020 : leaving %s()\n", x); +#define DEBUG_INTR(x) x +#else +#define ENTER_INTR(x) +#define LEAVE_INTR(x) +#define DEBUG_INTR(x) +#endif /* DEBUG ISP1020_INTR */ + +#define ISP1020_REV_ID 1 + +#define MAX_TARGETS 16 +#define MAX_LUNS 8 + +/* host configuration and control registers */ +#define HOST_HCCR 0xc0 /* host command and control */ + +/* pci bus interface registers */ +#define PCI_ID_LOW 0x00 /* vendor id */ +#define PCI_ID_HIGH 0x02 /* device id */ +#define ISP_CFG0 0x04 /* configuration register #0 */ +#define ISP_CFG1 0x06 /* configuration register #1 */ +#define PCI_INTF_CTL 0x08 /* pci interface control */ +#define PCI_INTF_STS 0x0a /* pci interface status */ +#define PCI_SEMAPHORE 0x0c /* pci semaphore */ +#define PCI_NVRAM 0x0e /* pci nvram interface */ + +/* mailbox registers */ +#define MBOX0 0x70 /* mailbox 0 */ +#define MBOX1 0x72 /* mailbox 1 */ +#define MBOX2 0x74 /* mailbox 2 */ +#define MBOX3 0x76 /* mailbox 3 */ +#define MBOX4 0x78 /* mailbox 4 */ +#define MBOX5 0x7a /* mailbox 5 */ + +/* mailbox command complete status codes */ +#define MBOX_COMMAND_COMPLETE 0x4000 +#define INVALID_COMMAND 0x4001 +#define HOST_INTERFACE_ERROR 0x4002 +#define TEST_FAILED 0x4003 +#define COMMAND_ERROR 0x4005 +#define COMMAND_PARAM_ERROR 0x4006 + +/* async event status codes */ +#define ASYNC_SCSI_BUS_RESET 0x8001 +#define SYSTEM_ERROR 0x8002 +#define REQUEST_TRANSFER_ERROR 0x8003 +#define RESPONSE_TRANSFER_ERROR 0x8004 +#define REQUEST_QUEUE_WAKEUP 0x8005 +#define EXECUTION_TIMEOUT_RESET 0x8006 + +struct Entry_header { + u_char entry_type; + u_char entry_cnt; + u_char sys_def_1; + u_char flags; +}; + +/* entry header type commands */ +#define ENTRY_COMMAND 1 +#define ENTRY_CONTINUATION 2 +#define ENTRY_STATUS 3 +#define ENTRY_MARKER 4 +#define ENTRY_EXTENDED_COMMAND 5 + +/* entry header flag definitions */ +#define EFLAG_CONTINUATION 1 +#define EFLAG_BUSY 2 +#define EFLAG_BAD_HEADER 4 +#define EFLAG_BAD_PAYLOAD 8 + +struct dataseg { + u_int d_base; + u_int d_count; +}; + +struct Command_Entry { + struct Entry_header hdr; + u_int handle; + u_char target_lun; + u_char target_id; + u_short cdb_length; + u_short control_flags; + u_short rsvd; + u_short time_out; + u_short segment_cnt; + u_char cdb[12]; + struct dataseg dataseg[4]; +}; + +/* command entry control flag definitions */ +#define CFLAG_NODISC 0x01 +#define CFLAG_HEAD_TAG 0x02 +#define CFLAG_ORDERED_TAG 0x04 +#define CFLAG_SIMPLE_TAG 0x08 +#define CFLAG_TAR_RTN 0x10 +#define CFLAG_READ 0x20 +#define CFLAG_WRITE 0x40 + +struct Ext_Command_Entry { + struct Entry_header hdr; + u_int handle; + u_char target_lun; + u_char target_id; + u_short cdb_length; + u_short control_flags; + u_short rsvd; + u_short time_out; + u_short segment_cnt; + u_char cdb[44]; +}; + +struct Continuation_Entry { + struct Entry_header hdr; + u_int reserved; + struct dataseg dataseg[7]; +}; + +struct Marker_Entry { + struct Entry_header hdr; + u_int reserved; + u_char target_lun; + u_char target_id; + u_char modifier; + u_char rsvd; + u_char rsvds[52]; +}; + +/* marker entry modifier definitions */ +#define SYNC_DEVICE 0 +#define SYNC_TARGET 1 +#define SYNC_ALL 2 + +struct Status_Entry { + struct Entry_header hdr; + u_int handle; + u_short scsi_status; + u_short completion_status; + u_short state_flags; + u_short status_flags; + u_short time; + u_short req_sense_len; + u_int residual; + u_char rsvd[8]; + u_char req_sense_data[32]; +}; + +/* status entry completion status definitions */ +#define CS_COMPLETE 0x0000 +#define CS_INCOMPLETE 0x0001 +#define CS_DMA_ERROR 0x0002 +#define CS_TRANSPORT_ERROR 0x0003 +#define CS_RESET_OCCURRED 0x0004 +#define CS_ABORTED 0x0005 +#define CS_TIMEOUT 0x0006 +#define CS_DATA_OVERRUN 0x0007 +#define CS_COMMAND_OVERRUN 0x0008 +#define CS_STATUS_OVERRUN 0x0009 +#define CS_BAD_MESSAGE 0x000a +#define CS_NO_MESSAGE_OUT 0x000b +#define CS_EXT_ID_FAILED 0x000c +#define CS_IDE_MSG_FAILED 0x000d +#define CS_ABORT_MSG_FAILED 0x000e +#define CS_REJECT_MSG_FAILED 0x000f +#define CS_NOP_MSG_FAILED 0x0010 +#define CS_PARITY_ERROR_MSG_FAILED 0x0011 +#define CS_DEVICE_RESET_MSG_FAILED 0x0012 +#define CS_ID_MSG_FAILED 0x0013 +#define CS_UNEXP_BUS_FREE 0x0014 +/* as per app note #83120-514-06a: */ +#define CS_DATA_UNDERRUN 0x0015 +#define CS_INVALID_ENTRY_TYPE 0x001b +#define CS_DEVICE_QUEUE_FULL 0x001c +#define CS_SCSI_PHASE_SKIPPED 0x001d +#define CS_ARS_FAILED 0x001e /* auto Req. Sense failed */ + +/* status entry state flag definitions */ +#define SF_GOT_BUS 0x0100 +#define SF_GOT_TARGET 0x0200 +#define SF_SENT_CDB 0x0400 +#define SF_TRANSFERRED_DATA 0x0800 +#define SF_GOT_STATUS 0x1000 +#define SF_GOT_SENSE 0x2000 + +/* status entry status flag definitions */ +#define STF_DISCONNECT 0x0001 +#define STF_SYNCHRONOUS 0x0002 +#define STF_PARITY_ERROR 0x0004 +#define STF_BUS_RESET 0x0008 +#define STF_DEVICE_RESET 0x0010 +#define STF_ABORTED 0x0020 +#define STF_TIMEOUT 0x0040 +#define STF_NEGOTIATION 0x0080 + +/* interface control commands */ +#define ISP_RESET 0x0001 +#define ISP_EN_INT 0x0002 +#define ISP_EN_RISC 0x0004 + +/* host control commands */ +#define HCCR_NOP 0x0000 +#define HCCR_RESET 0x1000 +#define HCCR_PAUSE 0x2000 +#define HCCR_RELEASE 0x3000 +#define HCCR_SINGLE_STEP 0x4000 +#define HCCR_SET_HOST_INTR 0x5000 +#define HCCR_CLEAR_HOST_INTR 0x6000 +#define HCCR_CLEAR_RISC_INTR 0x7000 +#define HCCR_BP_ENABLE 0x8000 +#define HCCR_BIOS_DISABLE 0x9000 +#define HCCR_TEST_MODE 0xf000 + +#define RISC_BUSY 0x0004 + +/* mailbox commands */ +#define MBOX_NO_OP 0x0000 +#define MBOX_LOAD_RAM 0x0001 +#define MBOX_EXEC_FIRMWARE 0x0002 +#define MBOX_DUMP_RAM 0x0003 +#define MBOX_WRITE_RAM_WORD 0x0004 +#define MBOX_READ_RAM_WORD 0x0005 +#define MBOX_MAILBOX_REG_TEST 0x0006 +#define MBOX_VERIFY_CHECKSUM 0x0007 +#define MBOX_ABOUT_FIRMWARE 0x0008 +#define MBOX_CHECK_FIRMWARE 0x000e +#define MBOX_INIT_REQ_QUEUE 0x0010 +#define MBOX_INIT_RES_QUEUE 0x0011 +#define MBOX_EXECUTE_IOCB 0x0012 +#define MBOX_WAKE_UP 0x0013 +#define MBOX_STOP_FIRMWARE 0x0014 +#define MBOX_ABORT 0x0015 +#define MBOX_ABORT_DEVICE 0x0016 +#define MBOX_ABORT_TARGET 0x0017 +#define MBOX_BUS_RESET 0x0018 +#define MBOX_STOP_QUEUE 0x0019 +#define MBOX_START_QUEUE 0x001a +#define MBOX_SINGLE_STEP_QUEUE 0x001b +#define MBOX_ABORT_QUEUE 0x001c +#define MBOX_GET_DEV_QUEUE_STATUS 0x001d +#define MBOX_GET_FIRMWARE_STATUS 0x001f +#define MBOX_GET_INIT_SCSI_ID 0x0020 +#define MBOX_GET_SELECT_TIMEOUT 0x0021 +#define MBOX_GET_RETRY_COUNT 0x0022 +#define MBOX_GET_TAG_AGE_LIMIT 0x0023 +#define MBOX_GET_CLOCK_RATE 0x0024 +#define MBOX_GET_ACT_NEG_STATE 0x0025 +#define MBOX_GET_ASYNC_DATA_SETUP_TIME 0x0026 +#define MBOX_GET_PCI_PARAMS 0x0027 +#define MBOX_GET_TARGET_PARAMS 0x0028 +#define MBOX_GET_DEV_QUEUE_PARAMS 0x0029 +#define MBOX_SET_INIT_SCSI_ID 0x0030 +#define MBOX_SET_SELECT_TIMEOUT 0x0031 +#define MBOX_SET_RETRY_COUNT 0x0032 +#define MBOX_SET_TAG_AGE_LIMIT 0x0033 +#define MBOX_SET_CLOCK_RATE 0x0034 +#define MBOX_SET_ACTIVE_NEG_STATE 0x0035 +#define MBOX_SET_ASYNC_DATA_SETUP_TIME 0x0036 +#define MBOX_SET_PCI_CONTROL_PARAMS 0x0037 +#define MBOX_SET_TARGET_PARAMS 0x0038 +#define MBOX_SET_DEV_QUEUE_PARAMS 0x0039 +#define MBOX_RETURN_BIOS_BLOCK_ADDR 0x0040 +#define MBOX_WRITE_FOUR_RAM_WORDS 0x0041 +#define MBOX_EXEC_BIOS_IOCB 0x0042 + +#include "qlogicisp_asm.c" + +#define PACKB(a, b) (((a)<<4)|(b)) + +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_PCI_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_PCI_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(1, 2), /* MBOX_RETURN_BIOS_BLOCK_ADDR */ + PACKB(6, 1), /* MBOX_WRITE_FOUR_RAM_WORDS */ + PACKB(2, 3) /* MBOX_EXEC_BIOS_IOCB */ +}; + +#define MAX_MBOX_COMMAND (sizeof(mbox_param)/sizeof(u_short)) + +struct host_param { + u_short fifo_threshold; + u_short host_adapter_enable; + u_short initiator_scsi_id; + u_short bus_reset_delay; + u_short retry_count; + u_short retry_delay; + u_short async_data_setup_time; + u_short req_ack_active_negation; + u_short data_line_active_negation; + u_short data_dma_burst_enable; + u_short command_dma_burst_enable; + u_short tag_aging; + u_short selection_timeout; + u_short max_queue_depth; +}; + +/* + * Device Flags: + * + * Bit Name + * --------- + * 7 Disconnect Privilege + * 6 Parity Checking + * 5 Wide Data Transfers + * 4 Synchronous Data Transfers + * 3 Tagged Queuing + * 2 Automatic Request Sense + * 1 Stop Queue on Check Condition + * 0 Renegotiate on Error + */ + +struct dev_param { + u_short device_flags; + u_short execution_throttle; + u_short synchronous_period; + u_short synchronous_offset; + u_short device_enable; + u_short reserved; /* pad */ +}; + +/* + * The result queue can be quite a bit smaller since continuation entries + * do not show up there: + */ +#define RES_QUEUE_LEN ((QLOGICISP_REQ_QUEUE_LEN + 1) / 8 - 1) +#define QUEUE_ENTRY_LEN 64 + +struct isp1020_hostdata { + u_char bus; + u_char revision; + u_char device_fn; + struct host_param host_param; + struct dev_param dev_param[MAX_TARGETS]; + + /* result and request queues (shared with isp1020): */ + u_int req_in_ptr; /* index of next request slot */ + u_int res_out_ptr; /* index of next result slot */ + + /* this is here so the queues are nicely aligned */ + long send_marker; /* do we need to send a marker? */ + + char res[RES_QUEUE_LEN+1][QUEUE_ENTRY_LEN]; + char req[QLOGICISP_REQ_QUEUE_LEN+1][QUEUE_ENTRY_LEN]; +}; + +/* 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, \ + QLOGICISP_REQ_QUEUE_LEN) +#define RES_QUEUE_DEPTH(in, out) QUEUE_DEPTH(in, out, RES_QUEUE_LEN) + +struct Scsi_Host *irq2host[NR_IRQS]; + +static void isp1020_enable_irqs(struct Scsi_Host *); +static void isp1020_disable_irqs(struct Scsi_Host *); +static int isp1020_init(struct Scsi_Host *); +static int isp1020_reset_hardware(struct Scsi_Host *); +static int isp1020_set_defaults(struct Scsi_Host *); +static int isp1020_load_parameters(struct Scsi_Host *); +static int isp1020_mbox_command(struct Scsi_Host *, u_short []); +static int isp1020_return_status(struct Status_Entry *); +static void isp1020_intr_handler(int, void *, struct pt_regs *); + +#if USE_NVRAM_DEFAULTS +static int isp1020_get_defaults(struct Scsi_Host *); +static int isp1020_verify_nvram(struct Scsi_Host *); +static u_short isp1020_read_nvram_word(struct Scsi_Host *, u_short); +#endif + +#if DEBUG_ISP1020 +static void isp1020_print_scsi_cmd(Scsi_Cmnd *); +#endif +#if DEBUG_ISP1020_INTR +static void isp1020_print_status_entry(struct Status_Entry *); +#endif + +static struct proc_dir_entry proc_scsi_isp1020 = { + PROC_SCSI_QLOGICISP, 7, "isp1020", + S_IFDIR | S_IRUGO | S_IXUGO, 2 +}; + + +static inline void isp1020_enable_irqs(struct Scsi_Host *host) +{ + outw(ISP_EN_INT|ISP_EN_RISC, host->io_port + PCI_INTF_CTL); +} + + +static inline void isp1020_disable_irqs(struct Scsi_Host *host) +{ + outw(0x0, host->io_port + PCI_INTF_CTL); +} + + +int isp1020_detect(Scsi_Host_Template *tmpt) +{ + int hosts = 0; + u_short index; + u_char bus, device_fn; + struct Scsi_Host *host; + struct isp1020_hostdata *hostdata; + + ENTER("isp1020_detect"); + + tmpt->proc_dir = &proc_scsi_isp1020; + + if (pcibios_present() == 0) { + printk("qlogicisp : PCI bios not present\n"); + return 0; + } + + memset(irq2host, 0, sizeof(irq2host)); + + for (index = 0; pcibios_find_device(PCI_VENDOR_ID_QLOGIC, + PCI_DEVICE_ID_QLOGIC_ISP1020, + index, &bus, &device_fn) == 0; + index++) + { + host = scsi_register(tmpt, sizeof(struct isp1020_hostdata)); + hostdata = (struct isp1020_hostdata *) host->hostdata; + + memset(hostdata, 0, sizeof(struct isp1020_hostdata)); + hostdata->bus = bus; + hostdata->device_fn = device_fn; + + if (isp1020_init(host) || isp1020_reset_hardware(host) +#if USE_NVRAM_DEFAULTS + || isp1020_get_defaults(host) +#else + || isp1020_set_defaults(host) +#endif /* USE_NVRAM_DEFAULTS */ + || isp1020_load_parameters(host)) { + scsi_unregister(host); + continue; + } + + host->this_id = hostdata->host_param.initiator_scsi_id; + + if (request_irq(host->irq, isp1020_intr_handler, SA_INTERRUPT, + "qlogicisp", NULL)) + { + printk("qlogicisp : interrupt %d already in use\n", + host->irq); + scsi_unregister(host); + continue; + } + + if (check_region(host->io_port, 0xff)) { + printk("qlogicisp : i/o region 0x%04x-0x%04x already " + "in use\n", + host->io_port, host->io_port + 0xff); + free_irq(host->irq, NULL); + scsi_unregister(host); + continue; + } + + request_region(host->io_port, 0xff, "qlogicisp"); + irq2host[host->irq] = host; + + outw(0x0, host->io_port + PCI_SEMAPHORE); + outw(HCCR_CLEAR_RISC_INTR, host->io_port + HOST_HCCR); + isp1020_enable_irqs(host); + + hosts++; + } + + LEAVE("isp1020_detect"); + + return hosts; +} + + +int isp1020_release(struct Scsi_Host *host) +{ + struct isp1020_hostdata *hostdata; + + ENTER("isp1020_release"); + + hostdata = (struct isp1020_hostdata *) host->hostdata; + + outw(0x0, host->io_port + PCI_INTF_CTL); + free_irq(host->irq, NULL); + + release_region(host->io_port, 0xff); + + LEAVE("isp1020_release"); + + return 0; +} + + +const char *isp1020_info(struct Scsi_Host *host) +{ + static char buf[80]; + struct isp1020_hostdata *hostdata; + + ENTER("isp1020_info"); + + hostdata = (struct isp1020_hostdata *) host->hostdata; + sprintf(buf, + "QLogic ISP1020 SCSI on PCI bus %d device %d irq %d base 0x%x", + hostdata->bus, (hostdata->device_fn & 0xf8) >> 3, host->irq, + host->io_port); + + LEAVE("isp1020_info"); + + return buf; +} + + +/* + * 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). + */ +int isp1020_queuecommand(Scsi_Cmnd *Cmnd, void (*done)(Scsi_Cmnd *)) +{ + int i, sg_count, n, num_free; + u_int in_ptr, out_ptr; + struct dataseg * ds; + struct scatterlist *sg; + struct Command_Entry *cmd; + struct Continuation_Entry *cont; + struct Scsi_Host *host; + struct isp1020_hostdata *hostdata; + + ENTER("isp1020_queuecommand"); + + host = Cmnd->host; + hostdata = (struct isp1020_hostdata *) host->hostdata; + Cmnd->scsi_done = done; + + DEBUG(isp1020_print_scsi_cmd(Cmnd)); + + out_ptr = inw(host->io_port + MBOX4); + in_ptr = hostdata->req_in_ptr; + + DEBUG(printk("qlogicisp : request queue depth %d\n", + REQ_QUEUE_DEPTH(in_ptr, out_ptr))); + + cmd = (struct Command_Entry *) &hostdata->req[in_ptr][0]; + in_ptr = (in_ptr + 1) & QLOGICISP_REQ_QUEUE_LEN; + if (in_ptr == out_ptr) { + printk("qlogicisp : request queue overflow\n"); + return 1; + } + + if (hostdata->send_marker) { + struct Marker_Entry *marker; + + TRACE("queue marker", in_ptr, 0); + + DEBUG(printk("qlogicisp : adding marker entry\n")); + marker = (struct Marker_Entry *) cmd; + memset(marker, 0, sizeof(struct Marker_Entry)); + + marker->hdr.entry_type = ENTRY_MARKER; + marker->hdr.entry_cnt = 1; + marker->modifier = SYNC_ALL; + + hostdata->send_marker = 0; + + if (((in_ptr + 1) & QLOGICISP_REQ_QUEUE_LEN) == out_ptr) { + outw(in_ptr, host->io_port + MBOX4); + hostdata->req_in_ptr = in_ptr; + printk("qlogicisp : request queue overflow\n"); + return 1; + } + cmd = (struct Command_Entry *) &hostdata->req[in_ptr][0]; + in_ptr = (in_ptr + 1) & QLOGICISP_REQ_QUEUE_LEN; + } + + TRACE("queue command", in_ptr, Cmnd); + + memset(cmd, 0, sizeof(struct Command_Entry)); + + cmd->hdr.entry_type = ENTRY_COMMAND; + cmd->hdr.entry_cnt = 1; + + cmd->handle = (u_int) virt_to_bus(Cmnd); + cmd->target_lun = Cmnd->lun; + cmd->target_id = Cmnd->target; + cmd->cdb_length = Cmnd->cmd_len; + cmd->control_flags = CFLAG_READ | CFLAG_WRITE; + cmd->time_out = 30; + + memcpy(cmd->cdb, Cmnd->cmnd, Cmnd->cmd_len); + + if (Cmnd->use_sg) { + cmd->segment_cnt = sg_count = Cmnd->use_sg; + sg = (struct scatterlist *) Cmnd->request_buffer; + ds = cmd->dataseg; + + /* fill in first four sg entries: */ + n = sg_count; + if (n > 4) + n = 4; + for (i = 0; i < n; i++) { + ds[i].d_base = (u_int) virt_to_bus(sg->address); + ds[i].d_count = sg->length; + ++sg; + } + sg_count -= 4; + + while (sg_count > 0) { + ++cmd->hdr.entry_cnt; + cont = (struct Continuation_Entry *) + &hostdata->req[in_ptr][0]; + in_ptr = (in_ptr + 1) & QLOGICISP_REQ_QUEUE_LEN; + if (in_ptr == out_ptr) { + printk("isp1020: unexpected request queue " + "overflow\n"); + return 1; + } + TRACE("queue continuation", in_ptr, 0); + 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) { + ds[i].d_base = (u_int)virt_to_bus(sg->address); + ds[i].d_count = sg->length; + ++sg; + } + sg_count -= n; + } + } else { + cmd->dataseg[0].d_base = + (u_int) virt_to_bus(Cmnd->request_buffer); + cmd->dataseg[0].d_count = + (u_int) Cmnd->request_bufflen; + cmd->segment_cnt = 1; + } + + outw(in_ptr, host->io_port + MBOX4); + hostdata->req_in_ptr = in_ptr; + + num_free = QLOGICISP_REQ_QUEUE_LEN - REQ_QUEUE_DEPTH(in_ptr, out_ptr); + host->can_queue = host->host_busy + num_free; + host->sg_tablesize = QLOGICISP_MAX_SG(num_free); + + LEAVE("isp1020_queuecommand"); + + return 0; +} + + +#define ASYNC_EVENT_INTERRUPT 0x01 + +void isp1020_intr_handler(int irq, void *dev_id, struct pt_regs *regs) +{ + Scsi_Cmnd *Cmnd; + struct Status_Entry *sts; + struct Scsi_Host *host; + struct isp1020_hostdata *hostdata; + u_int in_ptr, out_ptr; + u_short status; + + ENTER_INTR("isp1020_intr_handler"); + + host = irq2host[irq]; + if (!host) { + printk("qlogicisp : unexpected interrupt on line %d\n", irq); + return; + } + hostdata = (struct isp1020_hostdata *) host->hostdata; + + DEBUG_INTR(printk("qlogicisp : interrupt on line %d\n", irq)); + + if (!(inw(host->io_port + PCI_INTF_STS) & 0x04)) { + /* spurious interrupts can happen legally */ + DEBUG_INTR(printk("qlogicisp: got spurious interrupt\n")); + return; + } + in_ptr = inw(host->io_port + MBOX5); + outw(HCCR_CLEAR_RISC_INTR, host->io_port + HOST_HCCR); + + if ((inw(host->io_port + PCI_SEMAPHORE) & ASYNC_EVENT_INTERRUPT)) { + status = inw(host->io_port + MBOX0); + + DEBUG_INTR(printk("qlogicisp : mbox completion status: %x\n", + status)); + + switch (status) { + case ASYNC_SCSI_BUS_RESET: + case EXECUTION_TIMEOUT_RESET: + hostdata->send_marker = 1; + break; + case INVALID_COMMAND: + case HOST_INTERFACE_ERROR: + case COMMAND_ERROR: + case COMMAND_PARAM_ERROR: + printk("qlogicisp : bad mailbox return status\n"); + break; + } + outw(0x0, host->io_port + PCI_SEMAPHORE); + } + out_ptr = hostdata->res_out_ptr; + + DEBUG_INTR(printk("qlogicisp : response queue update\n")); + DEBUG_INTR(printk("qlogicisp : response queue depth %d\n", + QUEUE_DEPTH(in_ptr, out_ptr))); + + while (out_ptr != in_ptr) { + sts = (struct Status_Entry *) &hostdata->res[out_ptr][0]; + out_ptr = (out_ptr + 1) & RES_QUEUE_LEN; + + Cmnd = (Scsi_Cmnd *) bus_to_virt(sts->handle); + + TRACE("done", out_ptr, Cmnd); + + if (sts->completion_status == CS_RESET_OCCURRED + || sts->completion_status == CS_ABORTED + || (sts->status_flags & STF_BUS_RESET)) + hostdata->send_marker = 1; + + if (sts->state_flags & SF_GOT_SENSE) + memcpy(Cmnd->sense_buffer, sts->req_sense_data, + sizeof(Cmnd->sense_buffer)); + + DEBUG_INTR(isp1020_print_status_entry(sts)); + + if (sts->hdr.entry_type == ENTRY_STATUS) + Cmnd->result = isp1020_return_status(sts); + else + Cmnd->result = DID_ERROR << 16; + + outw(out_ptr, host->io_port + MBOX5); + (*Cmnd->scsi_done)(Cmnd); + } + hostdata->res_out_ptr = out_ptr; + + LEAVE_INTR("isp1020_intr_handler"); +} + + +static int isp1020_return_status(struct Status_Entry *sts) +{ + int host_status = DID_ERROR; +#if DEBUG_ISP1020_INTR + static char *reason[] = { + "DID_OK", + "DID_NO_CONNECT", + "DID_BUS_BUSY", + "DID_TIME_OUT", + "DID_BAD_TARGET", + "DID_ABORT", + "DID_PARITY", + "DID_ERROR", + "DID_RESET", + "DID_BAD_INTR" + }; +#endif /* DEBUG_ISP1020_INTR */ + + ENTER("isp1020_return_status"); + + DEBUG(printk("qlogicisp : completion status = 0x%04x\n", + sts->completion_status)); + + 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: + 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: + case CS_INVALID_ENTRY_TYPE: + case CS_DEVICE_QUEUE_FULL: + case CS_SCSI_PHASE_SKIPPED: + case CS_ARS_FAILED: + host_status = DID_ERROR; + break; + case CS_DATA_UNDERRUN: + host_status = DID_OK; + break; + default: + printk("qlogicisp : unknown completion status 0x%04x\n", + sts->completion_status); + host_status = DID_ERROR; + break; + } + + DEBUG_INTR(printk("qlogicisp : host status (%s) scsi status %x\n", + reason[host_status], sts->scsi_status)); + + LEAVE("isp1020_return_status"); + + return (sts->scsi_status & STATUS_MASK) | (host_status << 16); +} + + +int isp1020_abort(Scsi_Cmnd *Cmnd) +{ + u_short param[6]; + struct Scsi_Host *host; + struct isp1020_hostdata *hostdata; + int return_status = SCSI_ABORT_SUCCESS; + u_int cmdaddr = virt_to_bus(Cmnd); + + ENTER("isp1020_abort"); + + host = Cmnd->host; + hostdata = (struct isp1020_hostdata *) host->hostdata; + + isp1020_disable_irqs(host); + + param[0] = MBOX_ABORT; + param[1] = (((u_short) Cmnd->target) << 8) | Cmnd->lun; + param[2] = cmdaddr >> 16; + param[3] = cmdaddr & 0xffff; + + isp1020_mbox_command(host, param); + + if (param[0] != MBOX_COMMAND_COMPLETE) { + printk("qlogicisp : scsi abort failure: %x\n", param[0]); + return_status = SCSI_ABORT_ERROR; + } + + isp1020_enable_irqs(host); + + LEAVE("isp1020_abort"); + + return return_status; +} + + +int isp1020_reset(Scsi_Cmnd *Cmnd, unsigned int reset_flags) +{ + u_short param[6]; + struct Scsi_Host *host; + struct isp1020_hostdata *hostdata; + int return_status = SCSI_RESET_SUCCESS; + + ENTER("isp1020_reset"); + + host = Cmnd->host; + hostdata = (struct isp1020_hostdata *) host->hostdata; + + param[0] = MBOX_BUS_RESET; + param[1] = hostdata->host_param.bus_reset_delay; + + isp1020_disable_irqs(host); + + isp1020_mbox_command(host, param); + + if (param[0] != MBOX_COMMAND_COMPLETE) { + printk("qlogicisp : scsi bus reset failure: %x\n", param[0]); + return_status = SCSI_RESET_ERROR; + } + + isp1020_enable_irqs(host); + + LEAVE("isp1020_reset"); + + return return_status;; +} + + +int isp1020_biosparam(Disk *disk, kdev_t n, int ip[]) +{ + int size = disk->capacity; + + ENTER("isp1020_biosparam"); + + ip[0] = 64; + ip[1] = 32; + ip[2] = size >> 11; + if (ip[2] > 1024) { + ip[0] = 255; + ip[1] = 63; + ip[2] = size / (ip[0] * ip[1]); + if (ip[2] > 1023) + ip[2] = 1023; + } + + LEAVE("isp1020_biosparam"); + + return 0; +} + + +static int isp1020_reset_hardware(struct Scsi_Host *host) +{ + u_short param[6]; + int loop_count; + + ENTER("isp1020_reset_hardware"); + + outw(ISP_RESET, host->io_port + PCI_INTF_CTL); + outw(HCCR_RESET, host->io_port + HOST_HCCR); + outw(HCCR_RELEASE, host->io_port + HOST_HCCR); + outw(HCCR_BIOS_DISABLE, host->io_port + HOST_HCCR); + + loop_count = DEFAULT_LOOP_COUNT; + while (--loop_count && inw(host->io_port + HOST_HCCR) == RISC_BUSY) + barrier(); + if (!loop_count) + printk("qlogicisp: reset_hardware loop timeout\n"); + + outw(0, host->io_port + ISP_CFG1); + +#if DEBUG_ISP1020 + printk("qlogicisp : mbox 0 0x%04x \n", inw(host->io_port + MBOX0)); + printk("qlogicisp : mbox 1 0x%04x \n", inw(host->io_port + MBOX1)); + printk("qlogicisp : mbox 2 0x%04x \n", inw(host->io_port + MBOX2)); + printk("qlogicisp : mbox 3 0x%04x \n", inw(host->io_port + MBOX3)); + printk("qlogicisp : mbox 4 0x%04x \n", inw(host->io_port + MBOX4)); + printk("qlogicisp : mbox 5 0x%04x \n", inw(host->io_port + MBOX5)); +#endif /* DEBUG_ISP1020 */ + + DEBUG(printk("qlogicisp : loading risc ram\n")); + +#if RELOAD_FIRMWARE + { + int i; + for (i = 0; i < risc_code_length01; i++) { + param[0] = MBOX_WRITE_RAM_WORD; + param[1] = risc_code_addr01 + i; + param[2] = risc_code01[i]; + + isp1020_mbox_command(host, param); + + if (param[0] != MBOX_COMMAND_COMPLETE) { + printk("qlogicisp : firmware load failure\n"); + return 1; + } + } + } +#endif /* RELOAD_FIRMWARE */ + + DEBUG(printk("qlogicisp : verifying checksum\n")); + + param[0] = MBOX_VERIFY_CHECKSUM; + param[1] = risc_code_addr01; + + isp1020_mbox_command(host, param); + + if (param[0] != MBOX_COMMAND_COMPLETE) { + printk("qlogicisp : ram checksum failure\n"); + return 1; + } + + DEBUG(printk("qlogicisp : executing firmware\n")); + + param[0] = MBOX_EXEC_FIRMWARE; + param[1] = risc_code_addr01; + + isp1020_mbox_command(host, param); + + param[0] = MBOX_ABOUT_FIRMWARE; + + isp1020_mbox_command(host, param); + + if (param[0] != MBOX_COMMAND_COMPLETE) { + printk("qlogicisp : about firmware failure\n"); + return 1; + } + + DEBUG(printk("qlogicisp : firmware major revision %d\n", param[1])); + DEBUG(printk("qlogicisp : firmware minor revision %d\n", param[2])); + + LEAVE("isp1020_reset_hardware"); + + return 0; +} + + +static int isp1020_init(struct Scsi_Host *sh) +{ + u_int io_base; + struct isp1020_hostdata *hostdata; + u_char bus, device_fn, revision, irq; + u_short vendor_id, device_id, command; + + ENTER("isp1020_init"); + + hostdata = (struct isp1020_hostdata *) sh->hostdata; + bus = hostdata->bus; + device_fn = hostdata->device_fn; + + if (pcibios_read_config_word(bus, device_fn, PCI_VENDOR_ID, &vendor_id) + || pcibios_read_config_word(bus, device_fn, + PCI_DEVICE_ID, &device_id) + || pcibios_read_config_word(bus, device_fn, + PCI_COMMAND, &command) + || pcibios_read_config_dword(bus, device_fn, + PCI_BASE_ADDRESS_0, &io_base) + || pcibios_read_config_byte(bus, device_fn, + PCI_CLASS_REVISION, &revision) + || pcibios_read_config_byte(bus, device_fn, + PCI_INTERRUPT_LINE, &irq)) + { + printk("qlogicisp : error reading PCI configuration\n"); + return 1; + } + + if (vendor_id != PCI_VENDOR_ID_QLOGIC) { + printk("qlogicisp : 0x%04x is not QLogic vendor ID\n", + vendor_id); + return 1; + } + + if (device_id != PCI_DEVICE_ID_QLOGIC_ISP1020) { + printk("qlogicisp : 0x%04x does not match ISP1020 device id\n", + device_id); + return 1; + } + + if (command & PCI_COMMAND_IO && (io_base & 3) == 1) + io_base &= PCI_BASE_ADDRESS_IO_MASK; + else { + printk("qlogicisp : i/o mapping is disabled\n"); + return 1; + } + + if (!(command & PCI_COMMAND_MASTER)) { + printk("qlogicisp : bus mastering is disabled\n"); + return 1; + } + + if (revision != ISP1020_REV_ID) + printk("qlogicisp : new isp1020 revision ID (%d)\n", revision); + + if (inw(io_base + PCI_ID_LOW) != PCI_VENDOR_ID_QLOGIC + || inw(io_base + PCI_ID_HIGH) != PCI_DEVICE_ID_QLOGIC_ISP1020) + { + printk("qlogicisp : can't decode i/o address space at 0x%x\n", + io_base); + return 1; + } + + hostdata->revision = revision; + + sh->irq = irq; + sh->io_port = io_base; + + LEAVE("isp1020_init"); + + return 0; +} + + +#if USE_NVRAM_DEFAULTS + +static int isp1020_get_defaults(struct Scsi_Host *host) +{ + int i; + u_short value; + struct isp1020_hostdata *hostdata = + (struct isp1020_hostdata *) host->hostdata; + + ENTER("isp1020_get_defaults"); + + if (!isp1020_verify_nvram(host)) { + printk("qlogicisp : nvram checksum failure\n"); + printk("qlogicisp : attempting to use default parameters\n"); + return isp1020_set_defaults(host); + } + + value = isp1020_read_nvram_word(host, 2); + hostdata->host_param.fifo_threshold = (value >> 8) & 0x03; + hostdata->host_param.host_adapter_enable = (value >> 11) & 0x01; + hostdata->host_param.initiator_scsi_id = (value >> 12) & 0x0f; + + value = isp1020_read_nvram_word(host, 3); + hostdata->host_param.bus_reset_delay = value & 0xff; + hostdata->host_param.retry_count = value >> 8; + + value = isp1020_read_nvram_word(host, 4); + hostdata->host_param.retry_delay = value & 0xff; + hostdata->host_param.async_data_setup_time = (value >> 8) & 0x0f; + hostdata->host_param.req_ack_active_negation = (value >> 12) & 0x01; + hostdata->host_param.data_line_active_negation = (value >> 13) & 0x01; + hostdata->host_param.data_dma_burst_enable = (value >> 14) & 0x01; + hostdata->host_param.command_dma_burst_enable = (value >> 15); + + value = isp1020_read_nvram_word(host, 5); + hostdata->host_param.tag_aging = value & 0xff; + + value = isp1020_read_nvram_word(host, 6); + hostdata->host_param.selection_timeout = value & 0xffff; + + value = isp1020_read_nvram_word(host, 7); + hostdata->host_param.max_queue_depth = value & 0xffff; + +#if DEBUG_ISP1020_SETUP + printk("qlogicisp : fifo threshold=%d\n", + hostdata->host_param.fifo_threshold); + printk("qlogicisp : initiator scsi id=%d\n", + hostdata->host_param.initiator_scsi_id); + printk("qlogicisp : bus reset delay=%d\n", + hostdata->host_param.bus_reset_delay); + printk("qlogicisp : retry count=%d\n", + hostdata->host_param.retry_count); + printk("qlogicisp : retry delay=%d\n", + hostdata->host_param.retry_delay); + printk("qlogicisp : async data setup time=%d\n", + hostdata->host_param.async_data_setup_time); + printk("qlogicisp : req/ack active negation=%d\n", + hostdata->host_param.req_ack_active_negation); + printk("qlogicisp : data line active negation=%d\n", + hostdata->host_param.data_line_active_negation); + printk("qlogicisp : data DMA burst enable=%d\n", + hostdata->host_param.data_dma_burst_enable); + printk("qlogicisp : command DMA burst enable=%d\n", + hostdata->host_param.command_dma_burst_enable); + printk("qlogicisp : tag age limit=%d\n", + hostdata->host_param.tag_aging); + printk("qlogicisp : selection timeout limit=%d\n", + hostdata->host_param.selection_timeout); + printk("qlogicisp : max queue depth=%d\n", + hostdata->host_param.max_queue_depth); +#endif /* DEBUG_ISP1020_SETUP */ + + for (i = 0; i < MAX_TARGETS; i++) { + + value = isp1020_read_nvram_word(host, 14 + i * 3); + hostdata->dev_param[i].device_flags = value & 0xff; + hostdata->dev_param[i].execution_throttle = value >> 8; + + value = isp1020_read_nvram_word(host, 15 + i * 3); + hostdata->dev_param[i].synchronous_period = value & 0xff; + hostdata->dev_param[i].synchronous_offset = (value >> 8) & 0x0f; + hostdata->dev_param[i].device_enable = (value >> 12) & 0x01; + +#if DEBUG_ISP1020_SETUP + printk("qlogicisp : target 0x%02x\n", i); + printk("qlogicisp : device flags=0x%02x\n", + hostdata->dev_param[i].device_flags); + printk("qlogicisp : execution throttle=%d\n", + hostdata->dev_param[i].execution_throttle); + printk("qlogicisp : synchronous period=%d\n", + hostdata->dev_param[i].synchronous_period); + printk("qlogicisp : synchronous offset=%d\n", + hostdata->dev_param[i].synchronous_offset); + printk("qlogicisp : device enable=%d\n", + hostdata->dev_param[i].device_enable); +#endif /* DEBUG_ISP1020_SETUP */ + } + + LEAVE("isp1020_get_defaults"); + + return 0; +} + + +#define ISP1020_NVRAM_LEN 0x40 +#define ISP1020_NVRAM_SIG1 0x5349 +#define ISP1020_NVRAM_SIG2 0x2050 + +static int isp1020_verify_nvram(struct Scsi_Host *host) +{ + int i; + u_short value; + u_char checksum = 0; + + for (i = 0; i < ISP1020_NVRAM_LEN; i++) { + value = isp1020_read_nvram_word(host, i); + + switch (i) { + case 0: + if (value != ISP1020_NVRAM_SIG1) return 0; + break; + case 1: + if (value != ISP1020_NVRAM_SIG2) return 0; + break; + case 2: + if ((value & 0xff) != 0x02) return 0; + break; + } + checksum += value & 0xff; + checksum += value >> 8; + } + + return (checksum == 0); +} + +#define NVRAM_DELAY() udelay(2) /* 2 microsecond delay */ + + +u_short isp1020_read_nvram_word(struct Scsi_Host *host, u_short byte) +{ + int i; + u_short value, output, input; + + byte &= 0x3f; byte |= 0x0180; + + for (i = 8; i >= 0; i--) { + output = ((byte >> i) & 0x1) ? 0x4 : 0x0; + outw(output | 0x2, host->io_port + PCI_NVRAM); NVRAM_DELAY(); + outw(output | 0x3, host->io_port + PCI_NVRAM); NVRAM_DELAY(); + outw(output | 0x2, host->io_port + PCI_NVRAM); NVRAM_DELAY(); + } + + for (i = 0xf, value = 0; i >= 0; i--) { + value <<= 1; + outw(0x3, host->io_port + PCI_NVRAM); NVRAM_DELAY(); + input = inw(host->io_port + PCI_NVRAM); NVRAM_DELAY(); + outw(0x2, host->io_port + PCI_NVRAM); NVRAM_DELAY(); + if (input & 0x8) value |= 1; + } + + outw(0x0, host->io_port + PCI_NVRAM); NVRAM_DELAY(); + + return value; +} + +#endif /* USE_NVRAM_DEFAULTS */ + + +static int isp1020_set_defaults(struct Scsi_Host *host) +{ + struct isp1020_hostdata *hostdata = + (struct isp1020_hostdata *) host->hostdata; + int i; + + ENTER("isp1020_set_defaults"); + + hostdata->host_param.fifo_threshold = 2; + hostdata->host_param.host_adapter_enable = 1; + hostdata->host_param.initiator_scsi_id = 7; + hostdata->host_param.bus_reset_delay = 3; + hostdata->host_param.retry_count = 0; + hostdata->host_param.retry_delay = 1; + hostdata->host_param.async_data_setup_time = 6; + hostdata->host_param.req_ack_active_negation = 1; + hostdata->host_param.data_line_active_negation = 1; + hostdata->host_param.data_dma_burst_enable = 1; + hostdata->host_param.command_dma_burst_enable = 1; + hostdata->host_param.tag_aging = 8; + hostdata->host_param.selection_timeout = 250; + hostdata->host_param.max_queue_depth = 256; + + for (i = 0; i < MAX_TARGETS; i++) { + hostdata->dev_param[i].device_flags = 0xfd; + hostdata->dev_param[i].execution_throttle = 16; + hostdata->dev_param[i].synchronous_period = 25; + hostdata->dev_param[i].synchronous_offset = 12; + hostdata->dev_param[i].device_enable = 1; + } + + LEAVE("isp1020_set_defaults"); + + return 0; +} + + +static int isp1020_load_parameters(struct Scsi_Host *host) +{ + int i, k; + u_int queue_addr; + u_short param[6]; + u_short isp_cfg1; + unsigned long flags; + struct isp1020_hostdata *hostdata = + (struct isp1020_hostdata *) host->hostdata; + + ENTER("isp1020_load_parameters"); + + save_flags(flags); + cli(); + + outw(hostdata->host_param.fifo_threshold, host->io_port + ISP_CFG1); + + param[0] = MBOX_SET_INIT_SCSI_ID; + param[1] = hostdata->host_param.initiator_scsi_id; + + isp1020_mbox_command(host, param); + + if (param[0] != MBOX_COMMAND_COMPLETE) { + restore_flags(flags); + printk("qlogicisp : set initiator id failure\n"); + return 1; + } + + param[0] = MBOX_SET_RETRY_COUNT; + param[1] = hostdata->host_param.retry_count; + param[2] = hostdata->host_param.retry_delay; + + isp1020_mbox_command(host, param); + + if (param[0] != MBOX_COMMAND_COMPLETE) { + restore_flags(flags); + printk("qlogicisp : set retry count failure\n"); + return 1; + } + + param[0] = MBOX_SET_ASYNC_DATA_SETUP_TIME; + param[1] = hostdata->host_param.async_data_setup_time; + + isp1020_mbox_command(host, param); + + if (param[0] != MBOX_COMMAND_COMPLETE) { + restore_flags(flags); + printk("qlogicisp : async data setup time failure\n"); + return 1; + } + + param[0] = MBOX_SET_ACTIVE_NEG_STATE; + param[1] = (hostdata->host_param.req_ack_active_negation << 4) + | (hostdata->host_param.data_line_active_negation << 5); + + isp1020_mbox_command(host, param); + + if (param[0] != MBOX_COMMAND_COMPLETE) { + restore_flags(flags); + printk("qlogicisp : set active negation state failure\n"); + return 1; + } + + param[0] = MBOX_SET_PCI_CONTROL_PARAMS; + param[1] = hostdata->host_param.data_dma_burst_enable << 1; + param[2] = hostdata->host_param.command_dma_burst_enable << 1; + + isp1020_mbox_command(host, param); + + if (param[0] != MBOX_COMMAND_COMPLETE) { + restore_flags(flags); + printk("qlogicisp : set pci control parameter failure\n"); + return 1; + } + + isp_cfg1 = inw(host->io_port + ISP_CFG1); + + if (hostdata->host_param.data_dma_burst_enable + || hostdata->host_param.command_dma_burst_enable) + isp_cfg1 |= 0x0004; + else + isp_cfg1 &= 0xfffb; + + outw(isp_cfg1, host->io_port + ISP_CFG1); + + param[0] = MBOX_SET_TAG_AGE_LIMIT; + param[1] = hostdata->host_param.tag_aging; + + isp1020_mbox_command(host, param); + + if (param[0] != MBOX_COMMAND_COMPLETE) { + restore_flags(flags); + printk("qlogicisp : set tag age limit failure\n"); + return 1; + } + + param[0] = MBOX_SET_SELECT_TIMEOUT; + param[1] = hostdata->host_param.selection_timeout; + + isp1020_mbox_command(host, param); + + if (param[0] != MBOX_COMMAND_COMPLETE) { + restore_flags(flags); + printk("qlogicisp : set selection timeout failure\n"); + return 1; + } + + for (i = 0; i < MAX_TARGETS; i++) { + + if (!hostdata->dev_param[i].device_enable) + continue; + + param[0] = MBOX_SET_TARGET_PARAMS; + param[1] = i << 8; + param[2] = hostdata->dev_param[i].device_flags << 8; + param[3] = (hostdata->dev_param[i].synchronous_offset << 8) + | hostdata->dev_param[i].synchronous_period; + + isp1020_mbox_command(host, param); + + if (param[0] != MBOX_COMMAND_COMPLETE) { + restore_flags(flags); + printk("qlogicisp : set target parameter failure\n"); + return 1; + } + + for (k = 0; k < MAX_LUNS; k++) { + + param[0] = MBOX_SET_DEV_QUEUE_PARAMS; + param[1] = (i << 8) | k; + param[2] = hostdata->host_param.max_queue_depth; + param[3] = hostdata->dev_param[i].execution_throttle; + + isp1020_mbox_command(host, param); + + if (param[0] != MBOX_COMMAND_COMPLETE) { + restore_flags(flags); + printk("qlogicisp : set device queue " + "parameter failure\n"); + return 1; + } + } + } + + queue_addr = (u_int) virt_to_bus(&hostdata->res[0][0]); + + param[0] = MBOX_INIT_RES_QUEUE; + param[1] = RES_QUEUE_LEN + 1; + param[2] = (u_short) (queue_addr >> 16); + param[3] = (u_short) (queue_addr & 0xffff); + param[4] = 0; + param[5] = 0; + + isp1020_mbox_command(host, param); + + if (param[0] != MBOX_COMMAND_COMPLETE) { + restore_flags(flags); + printk("qlogicisp : set response queue failure\n"); + return 1; + } + + queue_addr = (u_int) virt_to_bus(&hostdata->req[0][0]); + + param[0] = MBOX_INIT_REQ_QUEUE; + param[1] = QLOGICISP_REQ_QUEUE_LEN + 1; + param[2] = (u_short) (queue_addr >> 16); + param[3] = (u_short) (queue_addr & 0xffff); + param[4] = 0; + + isp1020_mbox_command(host, param); + + if (param[0] != MBOX_COMMAND_COMPLETE) { + restore_flags(flags); + printk("qlogicisp : set request queue failure\n"); + return 1; + } + + restore_flags(flags); + + LEAVE("isp1020_load_parameters"); + + return 0; +} + + +/* + * currently, this is only called during initialization or abort/reset, + * at which times interrupts are disabled, so polling is OK, I guess... + */ +static int isp1020_mbox_command(struct Scsi_Host *host, u_short param[]) +{ + int loop_count; + + if (mbox_param[param[0]] == 0) + return 1; + + loop_count = DEFAULT_LOOP_COUNT; + while (--loop_count && inw(host->io_port + HOST_HCCR) & 0x0080) + barrier(); + if (!loop_count) + printk("qlogicisp: mbox_command loop timeout #1\n"); + + switch(mbox_param[param[0]] >> 4) { + case 6: outw(param[5], host->io_port + MBOX5); + case 5: outw(param[4], host->io_port + MBOX4); + case 4: outw(param[3], host->io_port + MBOX3); + case 3: outw(param[2], host->io_port + MBOX2); + case 2: outw(param[1], host->io_port + MBOX1); + case 1: outw(param[0], host->io_port + MBOX0); + } + + outw(0x0, host->io_port + PCI_SEMAPHORE); + outw(HCCR_CLEAR_RISC_INTR, host->io_port + HOST_HCCR); + outw(HCCR_SET_HOST_INTR, host->io_port + HOST_HCCR); + + loop_count = DEFAULT_LOOP_COUNT; + while (--loop_count && !(inw(host->io_port + PCI_INTF_STS) & 0x04)) + barrier(); + if (!loop_count) + printk("qlogicisp: mbox_command loop timeout #2\n"); + + loop_count = DEFAULT_LOOP_COUNT; + while (--loop_count && inw(host->io_port + MBOX0) == 0x04) + barrier(); + if (!loop_count) + printk("qlogicisp: mbox_command loop timeout #3\n"); + + switch(mbox_param[param[0]] & 0xf) { + case 6: param[5] = inw(host->io_port + MBOX5); + case 5: param[4] = inw(host->io_port + MBOX4); + case 4: param[3] = inw(host->io_port + MBOX3); + case 3: param[2] = inw(host->io_port + MBOX2); + case 2: param[1] = inw(host->io_port + MBOX1); + case 1: param[0] = inw(host->io_port + MBOX0); + } + + outw(0x0, host->io_port + PCI_SEMAPHORE); + outw(HCCR_CLEAR_RISC_INTR, host->io_port + HOST_HCCR); + + return 0; +} + + +#if DEBUG_ISP1020_INTR + +void isp1020_print_status_entry(struct Status_Entry *status) +{ + int i; + + printk("qlogicisp : entry count = 0x%02x, type = 0x%02x, flags = 0x%02x\n", + status->hdr.entry_cnt, status->hdr.entry_type, status->hdr.flags); + printk("qlogicisp : scsi status = 0x%04x, completion status = 0x%04x\n", + status->scsi_status, status->completion_status); + printk("qlogicisp : state flags = 0x%04x, status flags = 0x%04x\n", + status->state_flags, status->status_flags); + printk("qlogicisp : time = 0x%04x, request sense length = 0x%04x\n", + status->time, status->req_sense_len); + printk("qlogicisp : residual transfer length = 0x%08x\n", status->residual); + + for (i = 0; i < status->req_sense_len; i++) + printk("qlogicisp : sense data = 0x%02x\n", status->req_sense_data[i]); +} + +#endif /* DEBUG_ISP1020_INTR */ + + +#if DEBUG_ISP1020 + +void isp1020_print_scsi_cmd(Scsi_Cmnd *cmd) +{ + int i; + + printk("qlogicisp : target = 0x%02x, lun = 0x%02x, cmd_len = 0x%02x\n", + cmd->target, cmd->lun, cmd->cmd_len); + printk("qlogicisp : command = "); + for (i = 0; i < cmd->cmd_len; i++) + printk("0x%02x ", cmd->cmnd[i]); + printk("\n"); +} + +#endif /* DEBUG_ISP1020 */ + + +#ifdef MODULE +Scsi_Host_Template driver_template = QLOGICISP; + +#include "scsi_module.c" +#endif /* MODULE */ |