--- /dev/null
+/*
+ * dc395x.c
+ *
+ * Device Driver for Tekram DC395(U/UW/F), DC315(U)
+ * PCI SCSI Bus Master Host Adapter
+ * (SCSI chip set used Tekram ASIC TRM-S1040)
+ *
+ * Authors:
+ * C.L. Huang <ching@tekram.com.tw>
+ * Erich Chen <erich@tekram.com.tw>
+ * (C) Copyright 1995-1999 Tekram Technology Co., Ltd.
+ *
+ * Kurt Garloff <garloff@suse.de>
+ * (C) 1999-2000 Kurt Garloff
+ *
+ * Oliver Neukum <oliver@neukum.name>
+ * Ali Akcaagac <aliakc@web.de>
+ * Jamie Lenehan <lenehan@twibble.org>
+ * (C) 2003
+ *
+ * License: GNU GPL
+ *
+ *************************************************************************
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ ************************************************************************
+ */
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/delay.h>
+#include <linux/ctype.h>
+#include <linux/blkdev.h>
+#include <linux/interrupt.h>
+#include <linux/init.h>
+#include <linux/spinlock.h>
+#include <linux/pci.h>
+#include <linux/list.h>
+#include <linux/vmalloc.h>
+#include <linux/slab.h>
+#include <asm/io.h>
+
+#include <scsi/scsi.h>
+#include <scsi/scsicam.h> /* needed for scsicam_bios_param */
+#include <scsi/scsi_cmnd.h>
+#include <scsi/scsi_device.h>
+#include <scsi/scsi_host.h>
+
+#include "dc395x.h"
+
+#define DC395X_NAME "dc395x"
+#define DC395X_BANNER "Tekram DC395(U/UW/F), DC315(U) - ASIC TRM-S1040"
+#define DC395X_VERSION "v2.05, 2004/03/08"
+
+/*---------------------------------------------------------------------------
+ Features
+ ---------------------------------------------------------------------------*/
+/*
+ * Set to disable parts of the driver
+ */
+/*#define DC395x_NO_DISCONNECT*/
+/*#define DC395x_NO_TAGQ*/
+/*#define DC395x_NO_SYNC*/
+/*#define DC395x_NO_WIDE*/
+
+/*---------------------------------------------------------------------------
+ Debugging
+ ---------------------------------------------------------------------------*/
+/*
+ * Types of debugging that can be enabled and disabled
+ */
+#define DBG_KG 0x0001
+#define DBG_0 0x0002
+#define DBG_1 0x0004
+#define DBG_SG 0x0020
+#define DBG_FIFO 0x0040
+#define DBG_PIO 0x0080
+
+
+/*
+ * Set set of things to output debugging for.
+ * Undefine to remove all debugging
+ */
+/*#define DEBUG_MASK (DBG_0|DBG_1|DBG_SG|DBG_FIFO|DBG_PIO)*/
+/*#define DEBUG_MASK DBG_0*/
+
+
+/*
+ * Output a kernel mesage at the specified level and append the
+ * driver name and a ": " to the start of the message
+ */
+#define dprintkl(level, format, arg...) \
+ printk(level DC395X_NAME ": " format , ## arg)
+
+
+#ifdef DEBUG_MASK
+/*
+ * print a debug message - this is formated with KERN_DEBUG, then the
+ * driver name followed by a ": " and then the message is output.
+ * This also checks that the specified debug level is enabled before
+ * outputing the message
+ */
+#define dprintkdbg(type, format, arg...) \
+ do { \
+ if ((type) & (DEBUG_MASK)) \
+ dprintkl(KERN_DEBUG , format , ## arg); \
+ } while (0)
+
+/*
+ * Check if the specified type of debugging is enabled
+ */
+#define debug_enabled(type) ((DEBUG_MASK) & (type))
+
+#else
+/*
+ * No debugging. Do nothing
+ */
+#define dprintkdbg(type, format, arg...) \
+ do {} while (0)
+#define debug_enabled(type) (0)
+
+#endif
+
+
+#ifndef PCI_VENDOR_ID_TEKRAM
+#define PCI_VENDOR_ID_TEKRAM 0x1DE1 /* Vendor ID */
+#endif
+#ifndef PCI_DEVICE_ID_TEKRAM_TRMS1040
+#define PCI_DEVICE_ID_TEKRAM_TRMS1040 0x0391 /* Device ID */
+#endif
+
+
+#define DC395x_LOCK_IO(dev,flags) spin_lock_irqsave(((struct Scsi_Host *)dev)->host_lock, flags)
+#define DC395x_UNLOCK_IO(dev,flags) spin_unlock_irqrestore(((struct Scsi_Host *)dev)->host_lock, flags)
+
+#define DC395x_read8(acb,address) (u8)(inb(acb->io_port_base + (address)))
+#define DC395x_read16(acb,address) (u16)(inw(acb->io_port_base + (address)))
+#define DC395x_read32(acb,address) (u32)(inl(acb->io_port_base + (address)))
+#define DC395x_write8(acb,address,value) outb((value), acb->io_port_base + (address))
+#define DC395x_write16(acb,address,value) outw((value), acb->io_port_base + (address))
+#define DC395x_write32(acb,address,value) outl((value), acb->io_port_base + (address))
+
+/* cmd->result */
+#define RES_TARGET 0x000000FF /* Target State */
+#define RES_TARGET_LNX STATUS_MASK /* Only official ... */
+#define RES_ENDMSG 0x0000FF00 /* End Message */
+#define RES_DID 0x00FF0000 /* DID_ codes */
+#define RES_DRV 0xFF000000 /* DRIVER_ codes */
+
+#define MK_RES(drv,did,msg,tgt) ((int)(drv)<<24 | (int)(did)<<16 | (int)(msg)<<8 | (int)(tgt))
+#define MK_RES_LNX(drv,did,msg,tgt) ((int)(drv)<<24 | (int)(did)<<16 | (int)(msg)<<8 | (int)(tgt)<<1)
+
+#define SET_RES_TARGET(who,tgt) { who &= ~RES_TARGET; who |= (int)(tgt); }
+#define SET_RES_TARGET_LNX(who,tgt) { who &= ~RES_TARGET_LNX; who |= (int)(tgt) << 1; }
+#define SET_RES_MSG(who,msg) { who &= ~RES_ENDMSG; who |= (int)(msg) << 8; }
+#define SET_RES_DID(who,did) { who &= ~RES_DID; who |= (int)(did) << 16; }
+#define SET_RES_DRV(who,drv) { who &= ~RES_DRV; who |= (int)(drv) << 24; }
+
+#define TAG_NONE 255
+
+/*
+ * srb->segement_x is the hw sg list. It is always allocated as a
+ * DC395x_MAX_SG_LISTENTRY entries in a linear block which does not
+ * cross a page boundy.
+ */
+#define SEGMENTX_LEN (sizeof(struct SGentry)*DC395x_MAX_SG_LISTENTRY)
+
+
+struct SGentry {
+ u32 address; /* bus! address */
+ u32 length;
+};
+
+/* The SEEPROM structure for TRM_S1040 */
+struct NVRamTarget {
+ u8 cfg0; /* Target configuration byte 0 */
+ u8 period; /* Target period */
+ u8 cfg2; /* Target configuration byte 2 */
+ u8 cfg3; /* Target configuration byte 3 */
+};
+
+struct NvRamType {
+ u8 sub_vendor_id[2]; /* 0,1 Sub Vendor ID */
+ u8 sub_sys_id[2]; /* 2,3 Sub System ID */
+ u8 sub_class; /* 4 Sub Class */
+ u8 vendor_id[2]; /* 5,6 Vendor ID */
+ u8 device_id[2]; /* 7,8 Device ID */
+ u8 reserved; /* 9 Reserved */
+ struct NVRamTarget target[DC395x_MAX_SCSI_ID];
+ /** 10,11,12,13
+ ** 14,15,16,17
+ ** ....
+ ** ....
+ ** 70,71,72,73
+ */
+ u8 scsi_id; /* 74 Host Adapter SCSI ID */
+ u8 channel_cfg; /* 75 Channel configuration */
+ u8 delay_time; /* 76 Power on delay time */
+ u8 max_tag; /* 77 Maximum tags */
+ u8 reserved0; /* 78 */
+ u8 boot_target; /* 79 */
+ u8 boot_lun; /* 80 */
+ u8 reserved1; /* 81 */
+ u16 reserved2[22]; /* 82,..125 */
+ u16 cksum; /* 126,127 */
+};
+
+struct ScsiReqBlk {
+ struct list_head list; /* next/prev ptrs for srb lists */
+ struct DeviceCtlBlk *dcb;
+ struct scsi_cmnd *cmd;
+
+ struct SGentry *segment_x; /* Linear array of hw sg entries (up to 64 entries) */
+ dma_addr_t sg_bus_addr; /* Bus address of sg list (ie, of segment_x) */
+
+ u8 sg_count; /* No of HW sg entries for this request */
+ u8 sg_index; /* Index of HW sg entry for this request */
+ size_t total_xfer_length; /* Total number of bytes remaining to be transferred */
+ size_t request_length; /* Total number of bytes in this request */
+ /*
+ * The sense buffer handling function, request_sense, uses
+ * the first hw sg entry (segment_x[0]) and the transfer
+ * length (total_xfer_length). While doing this it stores the
+ * original values into the last sg hw list
+ * (srb->segment_x[DC395x_MAX_SG_LISTENTRY - 1] and the
+ * total_xfer_length in xferred. These values are restored in
+ * pci_unmap_srb_sense. This is the only place xferred is used.
+ */
+ size_t xferred; /* Saved copy of total_xfer_length */
+
+ u16 state;
+
+ u8 msgin_buf[6];
+ u8 msgout_buf[6];
+
+ u8 adapter_status;
+ u8 target_status;
+ u8 msg_count;
+ u8 end_message;
+
+ u8 tag_number;
+ u8 status;
+ u8 retry_count;
+ u8 flag;
+
+ u8 scsi_phase;
+};
+
+struct DeviceCtlBlk {
+ struct list_head list; /* next/prev ptrs for the dcb list */
+ struct AdapterCtlBlk *acb;
+ struct list_head srb_going_list; /* head of going srb list */
+ struct list_head srb_waiting_list; /* head of waiting srb list */
+
+ struct ScsiReqBlk *active_srb;
+ u32 tag_mask;
+
+ u16 max_command;
+
+ u8 target_id; /* SCSI Target ID (SCSI Only) */
+ u8 target_lun; /* SCSI Log. Unit (SCSI Only) */
+ u8 identify_msg;
+ u8 dev_mode;
+
+ u8 inquiry7; /* To store Inquiry flags */
+ u8 sync_mode; /* 0:async mode */
+ u8 min_nego_period; /* for nego. */
+ u8 sync_period; /* for reg. */
+
+ u8 sync_offset; /* for reg. and nego.(low nibble) */
+ u8 flag;
+ u8 dev_type;
+ u8 init_tcq_flag;
+};
+
+struct AdapterCtlBlk {
+ struct Scsi_Host *scsi_host;
+
+ unsigned long io_port_base;
+ unsigned long io_port_len;
+
+ struct list_head dcb_list; /* head of going dcb list */
+ struct DeviceCtlBlk *dcb_run_robin;
+ struct DeviceCtlBlk *active_dcb;
+
+ struct list_head srb_free_list; /* head of free srb list */
+ struct ScsiReqBlk *tmp_srb;
+ struct timer_list waiting_timer;
+ struct timer_list selto_timer;
+
+ unsigned long last_reset;
+
+ u16 srb_count;
+
+ u8 sel_timeout;
+
+ unsigned int irq_level;
+ u8 tag_max_num;
+ u8 acb_flag;
+ u8 gmode2;
+
+ u8 config;
+ u8 lun_chk;
+ u8 scan_devices;
+ u8 hostid_bit;
+
+ u8 dcb_map[DC395x_MAX_SCSI_ID];
+ struct DeviceCtlBlk *children[DC395x_MAX_SCSI_ID][32];
+
+ struct pci_dev *dev;
+
+ u8 msg_len;
+
+ struct ScsiReqBlk srb_array[DC395x_MAX_SRB_CNT];
+ struct ScsiReqBlk srb;
+
+ struct NvRamType eeprom; /* eeprom settings for this adapter */
+};
+
+
+/*---------------------------------------------------------------------------
+ Forward declarations
+ ---------------------------------------------------------------------------*/
+static void data_out_phase0(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb,
+ u16 *pscsi_status);
+static void data_in_phase0(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb,
+ u16 *pscsi_status);
+static void command_phase0(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb,
+ u16 *pscsi_status);
+static void status_phase0(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb,
+ u16 *pscsi_status);
+static void msgout_phase0(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb,
+ u16 *pscsi_status);
+static void msgin_phase0(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb,
+ u16 *pscsi_status);
+static void data_out_phase1(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb,
+ u16 *pscsi_status);
+static void data_in_phase1(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb,
+ u16 *pscsi_status);
+static void command_phase1(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb,
+ u16 *pscsi_status);
+static void status_phase1(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb,
+ u16 *pscsi_status);
+static void msgout_phase1(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb,
+ u16 *pscsi_status);
+static void msgin_phase1(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb,
+ u16 *pscsi_status);
+static void nop0(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb,
+ u16 *pscsi_status);
+static void nop1(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb,
+ u16 *pscsi_status);
+static void set_basic_config(struct AdapterCtlBlk *acb);
+static void cleanup_after_transfer(struct AdapterCtlBlk *acb,
+ struct ScsiReqBlk *srb);
+static void reset_scsi_bus(struct AdapterCtlBlk *acb);
+static void data_io_transfer(struct AdapterCtlBlk *acb,
+ struct ScsiReqBlk *srb, u16 io_dir);
+static void disconnect(struct AdapterCtlBlk *acb);
+static void reselect(struct AdapterCtlBlk *acb);
+static u8 start_scsi(struct AdapterCtlBlk *acb, struct DeviceCtlBlk *dcb,
+ struct ScsiReqBlk *srb);
+static inline void enable_msgout_abort(struct AdapterCtlBlk *acb,
+ struct ScsiReqBlk *srb);
+static void build_srb(struct scsi_cmnd *cmd, struct DeviceCtlBlk *dcb,
+ struct ScsiReqBlk *srb);
+static void doing_srb_done(struct AdapterCtlBlk *acb, u8 did_code,
+ struct scsi_cmnd *cmd, u8 force);
+static void scsi_reset_detect(struct AdapterCtlBlk *acb);
+static void pci_unmap_srb(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb);
+static void pci_unmap_srb_sense(struct AdapterCtlBlk *acb,
+ struct ScsiReqBlk *srb);
+static void srb_done(struct AdapterCtlBlk *acb, struct DeviceCtlBlk *dcb,
+ struct ScsiReqBlk *srb);
+static void request_sense(struct AdapterCtlBlk *acb, struct DeviceCtlBlk *dcb,
+ struct ScsiReqBlk *srb);
+static void set_xfer_rate(struct AdapterCtlBlk *acb,
+ struct DeviceCtlBlk *dcb);
+static void waiting_timeout(unsigned long ptr);
+
+
+/*---------------------------------------------------------------------------
+ Static Data
+ ---------------------------------------------------------------------------*/
+static u16 current_sync_offset = 0;
+
+static void *dc395x_scsi_phase0[] = {
+ data_out_phase0,/* phase:0 */
+ data_in_phase0, /* phase:1 */
+ command_phase0, /* phase:2 */
+ status_phase0, /* phase:3 */
+ nop0, /* phase:4 PH_BUS_FREE .. initial phase */
+ nop0, /* phase:5 PH_BUS_FREE .. initial phase */
+ msgout_phase0, /* phase:6 */
+ msgin_phase0, /* phase:7 */
+};
+
+static void *dc395x_scsi_phase1[] = {
+ data_out_phase1,/* phase:0 */
+ data_in_phase1, /* phase:1 */
+ command_phase1, /* phase:2 */
+ status_phase1, /* phase:3 */
+ nop1, /* phase:4 PH_BUS_FREE .. initial phase */
+ nop1, /* phase:5 PH_BUS_FREE .. initial phase */
+ msgout_phase1, /* phase:6 */
+ msgin_phase1, /* phase:7 */
+};
+
+/*
+ *Fast20: 000 50ns, 20.0 MHz
+ * 001 75ns, 13.3 MHz
+ * 010 100ns, 10.0 MHz
+ * 011 125ns, 8.0 MHz
+ * 100 150ns, 6.6 MHz
+ * 101 175ns, 5.7 MHz
+ * 110 200ns, 5.0 MHz
+ * 111 250ns, 4.0 MHz
+ *
+ *Fast40(LVDS): 000 25ns, 40.0 MHz
+ * 001 50ns, 20.0 MHz
+ * 010 75ns, 13.3 MHz
+ * 011 100ns, 10.0 MHz
+ * 100 125ns, 8.0 MHz
+ * 101 150ns, 6.6 MHz
+ * 110 175ns, 5.7 MHz
+ * 111 200ns, 5.0 MHz
+ */
+/*static u8 clock_period[] = {12,19,25,31,37,44,50,62};*/
+
+/* real period:48ns,76ns,100ns,124ns,148ns,176ns,200ns,248ns */
+static u8 clock_period[] = { 12, 18, 25, 31, 37, 43, 50, 62 };
+static u16 clock_speed[] = { 200, 133, 100, 80, 67, 58, 50, 40 };
+
+
+/*---------------------------------------------------------------------------
+ Configuration
+ ---------------------------------------------------------------------------*/
+/*
+ * Module/boot parameters currently effect *all* instances of the
+ * card in the system.
+ */
+
+/*
+ * Command line parameters are stored in a structure below.
+ * These are the index's into the structure for the various
+ * command line options.
+ */
+#define CFG_ADAPTER_ID 0
+#define CFG_MAX_SPEED 1
+#define CFG_DEV_MODE 2
+#define CFG_ADAPTER_MODE 3
+#define CFG_TAGS 4
+#define CFG_RESET_DELAY 5
+
+#define CFG_NUM 6 /* number of configuration items */
+
+
+/*
+ * Value used to indicate that a command line override
+ * hasn't been used to modify the value.
+ */
+#define CFG_PARAM_UNSET -1
+
+
+/*
+ * Hold command line parameters.
+ */
+struct ParameterData {
+ int value; /* value of this setting */
+ int min; /* minimum value */
+ int max; /* maximum value */
+ int def; /* default value */
+ int safe; /* safe value */
+};
+static struct ParameterData cfg_data[] = {
+ { /* adapter id */
+ CFG_PARAM_UNSET,
+ 0,
+ 15,
+ 7,
+ 7
+ },
+ { /* max speed */
+ CFG_PARAM_UNSET,
+ 0,
+ 7,
+ 1, /* 13.3Mhz */
+ 4, /* 6.7Hmz */
+ },
+ { /* dev mode */
+ CFG_PARAM_UNSET,
+ 0,
+ 0x3f,
+ NTC_DO_PARITY_CHK | NTC_DO_DISCONNECT | NTC_DO_SYNC_NEGO |
+ NTC_DO_WIDE_NEGO | NTC_DO_TAG_QUEUEING |
+ NTC_DO_SEND_START,
+ NTC_DO_PARITY_CHK | NTC_DO_SEND_START
+ },
+ { /* adapter mode */
+ CFG_PARAM_UNSET,
+ 0,
+ 0x2f,
+ NAC_SCANLUN |
+ NAC_GT2DRIVES | NAC_GREATER_1G | NAC_POWERON_SCSI_RESET
+ /*| NAC_ACTIVE_NEG*/,
+ NAC_GT2DRIVES | NAC_GREATER_1G | NAC_POWERON_SCSI_RESET | 0x08
+ },
+ { /* tags */
+ CFG_PARAM_UNSET,
+ 0,
+ 5,
+ 3, /* 16 tags (??) */
+ 2,
+ },
+ { /* reset delay */
+ CFG_PARAM_UNSET,
+ 0,
+ 180,
+ 1, /* 1 second */
+ 10, /* 10 seconds */
+ }
+};
+
+
+/*
+ * Safe settings. If set to zero the BIOS/default values with
+ * command line overrides will be used. If set to 1 then safe and
+ * slow settings will be used.
+ */
+static bool use_safe_settings = 0;
+module_param_named(safe, use_safe_settings, bool, 0);
+MODULE_PARM_DESC(safe, "Use safe and slow settings only. Default: false");
+
+
+module_param_named(adapter_id, cfg_data[CFG_ADAPTER_ID].value, int, 0);
+MODULE_PARM_DESC(adapter_id, "Adapter SCSI ID. Default 7 (0-15)");
+
+module_param_named(max_speed, cfg_data[CFG_MAX_SPEED].value, int, 0);
+MODULE_PARM_DESC(max_speed, "Maximum bus speed. Default 1 (0-7) Speeds: 0=20, 1=13.3, 2=10, 3=8, 4=6.7, 5=5.8, 6=5, 7=4 Mhz");
+
+module_param_named(dev_mode, cfg_data[CFG_DEV_MODE].value, int, 0);
+MODULE_PARM_DESC(dev_mode, "Device mode.");
+
+module_param_named(adapter_mode, cfg_data[CFG_ADAPTER_MODE].value, int, 0);
+MODULE_PARM_DESC(adapter_mode, "Adapter mode.");
+
+module_param_named(tags, cfg_data[CFG_TAGS].value, int, 0);
+MODULE_PARM_DESC(tags, "Number of tags (1<<x). Default 3 (0-5)");
+
+module_param_named(reset_delay, cfg_data[CFG_RESET_DELAY].value, int, 0);
+MODULE_PARM_DESC(reset_delay, "Reset delay in seconds. Default 1 (0-180)");
+
+
+/**
+ * set_safe_settings - if the use_safe_settings option is set then
+ * set all values to the safe and slow values.
+ **/
+static void set_safe_settings(void)
+{
+ if (use_safe_settings)
+ {
+ int i;
+
+ dprintkl(KERN_INFO, "Using safe settings.\n");
+ for (i = 0; i < CFG_NUM; i++)
+ {
+ cfg_data[i].value = cfg_data[i].safe;
+ }
+ }
+}
+
+
+/**
+ * fix_settings - reset any boot parameters which are out of range
+ * back to the default values.
+ **/
+static void fix_settings(void)
+{
+ int i;
+
+ dprintkdbg(DBG_1,
+ "setup: AdapterId=%08x MaxSpeed=%08x DevMode=%08x "
+ "AdapterMode=%08x Tags=%08x ResetDelay=%08x\n",
+ cfg_data[CFG_ADAPTER_ID].value,
+ cfg_data[CFG_MAX_SPEED].value,
+ cfg_data[CFG_DEV_MODE].value,
+ cfg_data[CFG_ADAPTER_MODE].value,
+ cfg_data[CFG_TAGS].value,
+ cfg_data[CFG_RESET_DELAY].value);
+ for (i = 0; i < CFG_NUM; i++)
+ {
+ if (cfg_data[i].value < cfg_data[i].min
+ || cfg_data[i].value > cfg_data[i].max)
+ cfg_data[i].value = cfg_data[i].def;
+ }
+}
+
+
+
+/*
+ * Mapping from the eeprom delay index value (index into this array)
+ * to the number of actual seconds that the delay should be for.
+ */
+static char eeprom_index_to_delay_map[] =
+ { 1, 3, 5, 10, 16, 30, 60, 120 };
+
+
+/**
+ * eeprom_index_to_delay - Take the eeprom delay setting and convert it
+ * into a number of seconds.
+ *
+ * @eeprom: The eeprom structure in which we find the delay index to map.
+ **/
+static void eeprom_index_to_delay(struct NvRamType *eeprom)
+{
+ eeprom->delay_time = eeprom_index_to_delay_map[eeprom->delay_time];
+}
+
+
+/**
+ * delay_to_eeprom_index - Take a delay in seconds and return the
+ * closest eeprom index which will delay for at least that amount of
+ * seconds.
+ *
+ * @delay: The delay, in seconds, to find the eeprom index for.
+ **/
+static int delay_to_eeprom_index(int delay)
+{
+ u8 idx = 0;
+ while (idx < 7 && eeprom_index_to_delay_map[idx] < delay)
+ idx++;
+ return idx;
+}
+
+
+/**
+ * eeprom_override - Override the eeprom settings, in the provided
+ * eeprom structure, with values that have been set on the command
+ * line.
+ *
+ * @eeprom: The eeprom data to override with command line options.
+ **/
+static void eeprom_override(struct NvRamType *eeprom)
+{
+ u8 id;
+
+ /* Adapter Settings */
+ if (cfg_data[CFG_ADAPTER_ID].value != CFG_PARAM_UNSET)
+ eeprom->scsi_id = (u8)cfg_data[CFG_ADAPTER_ID].value;
+
+ if (cfg_data[CFG_ADAPTER_MODE].value != CFG_PARAM_UNSET)
+ eeprom->channel_cfg = (u8)cfg_data[CFG_ADAPTER_MODE].value;
+
+ if (cfg_data[CFG_RESET_DELAY].value != CFG_PARAM_UNSET)
+ eeprom->delay_time = delay_to_eeprom_index(
+ cfg_data[CFG_RESET_DELAY].value);
+
+ if (cfg_data[CFG_TAGS].value != CFG_PARAM_UNSET)
+ eeprom->max_tag = (u8)cfg_data[CFG_TAGS].value;
+
+ /* Device Settings */
+ for (id = 0; id < DC395x_MAX_SCSI_ID; id++) {
+ if (cfg_data[CFG_DEV_MODE].value != CFG_PARAM_UNSET)
+ eeprom->target[id].cfg0 =
+ (u8)cfg_data[CFG_DEV_MODE].value;
+
+ if (cfg_data[CFG_MAX_SPEED].value != CFG_PARAM_UNSET)
+ eeprom->target[id].period =
+ (u8)cfg_data[CFG_MAX_SPEED].value;
+
+ }
+}
+
+
+/*---------------------------------------------------------------------------
+ ---------------------------------------------------------------------------*/
+
+static unsigned int list_size(struct list_head *head)
+{
+ unsigned int count = 0;
+ struct list_head *pos;
+ list_for_each(pos, head)
+ count++;
+ return count;
+}
+
+
+static struct DeviceCtlBlk *dcb_get_next(struct list_head *head,
+ struct DeviceCtlBlk *pos)
+{
+ int use_next = 0;
+ struct DeviceCtlBlk* next = NULL;
+ struct DeviceCtlBlk* i;
+
+ if (list_empty(head))
+ return NULL;
+
+ /* find supplied dcb and then select the next one */
+ list_for_each_entry(i, head, list)
+ if (use_next) {
+ next = i;
+ break;
+ } else if (i == pos) {
+ use_next = 1;
+ }
+ /* if no next one take the head one (ie, wraparound) */
+ if (!next)
+ list_for_each_entry(i, head, list) {
+ next = i;
+ break;
+ }
+
+ return next;
+}
+
+
+static void free_tag(struct DeviceCtlBlk *dcb, struct ScsiReqBlk *srb)
+{
+ if (srb->tag_number < 255) {
+ dcb->tag_mask &= ~(1 << srb->tag_number); /* free tag mask */
+ srb->tag_number = 255;
+ }
+}
+
+
+/* Find cmd in SRB list */
+static inline struct ScsiReqBlk *find_cmd(struct scsi_cmnd *cmd,
+ struct list_head *head)
+{
+ struct ScsiReqBlk *i;
+ list_for_each_entry(i, head, list)
+ if (i->cmd == cmd)
+ return i;
+ return NULL;
+}
+
+
+static struct ScsiReqBlk *srb_get_free(struct AdapterCtlBlk *acb)
+{
+ struct list_head *head = &acb->srb_free_list;
+ struct ScsiReqBlk *srb = NULL;
+
+ if (!list_empty(head)) {
+ srb = list_entry(head->next, struct ScsiReqBlk, list);
+ list_del(head->next);
+ dprintkdbg(DBG_0, "srb_get_free: srb=%p\n", srb);
+ }
+ return srb;
+}
+
+
+static void srb_free_insert(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb)
+{
+ dprintkdbg(DBG_0, "srb_free_insert: srb=%p\n", srb);
+ list_add_tail(&srb->list, &acb->srb_free_list);
+}
+
+
+static void srb_waiting_insert(struct DeviceCtlBlk *dcb,
+ struct ScsiReqBlk *srb)
+{
+ dprintkdbg(DBG_0, "srb_waiting_insert: (0x%p) <%02i-%i> srb=%p\n",
+ srb->cmd, dcb->target_id, dcb->target_lun, srb);
+ list_add(&srb->list, &dcb->srb_waiting_list);
+}
+
+
+static void srb_waiting_append(struct DeviceCtlBlk *dcb,
+ struct ScsiReqBlk *srb)
+{
+ dprintkdbg(DBG_0, "srb_waiting_append: (0x%p) <%02i-%i> srb=%p\n",
+ srb->cmd, dcb->target_id, dcb->target_lun, srb);
+ list_add_tail(&srb->list, &dcb->srb_waiting_list);
+}
+
+
+static void srb_going_append(struct DeviceCtlBlk *dcb, struct ScsiReqBlk *srb)
+{
+ dprintkdbg(DBG_0, "srb_going_append: (0x%p) <%02i-%i> srb=%p\n",
+ srb->cmd, dcb->target_id, dcb->target_lun, srb);
+ list_add_tail(&srb->list, &dcb->srb_going_list);
+}
+
+
+static void srb_going_remove(struct DeviceCtlBlk *dcb, struct ScsiReqBlk *srb)
+{
+ struct ScsiReqBlk *i;
+ struct ScsiReqBlk *tmp;
+ dprintkdbg(DBG_0, "srb_going_remove: (0x%p) <%02i-%i> srb=%p\n",
+ srb->cmd, dcb->target_id, dcb->target_lun, srb);
+
+ list_for_each_entry_safe(i, tmp, &dcb->srb_going_list, list)
+ if (i == srb) {
+ list_del(&srb->list);
+ break;
+ }
+}
+
+
+static void srb_waiting_remove(struct DeviceCtlBlk *dcb,
+ struct ScsiReqBlk *srb)
+{
+ struct ScsiReqBlk *i;
+ struct ScsiReqBlk *tmp;
+ dprintkdbg(DBG_0, "srb_waiting_remove: (0x%p) <%02i-%i> srb=%p\n",
+ srb->cmd, dcb->target_id, dcb->target_lun, srb);
+
+ list_for_each_entry_safe(i, tmp, &dcb->srb_waiting_list, list)
+ if (i == srb) {
+ list_del(&srb->list);
+ break;
+ }
+}
+
+
+static void srb_going_to_waiting_move(struct DeviceCtlBlk *dcb,
+ struct ScsiReqBlk *srb)
+{
+ dprintkdbg(DBG_0,
+ "srb_going_to_waiting_move: (0x%p) <%02i-%i> srb=%p\n",
+ srb->cmd, dcb->target_id, dcb->target_lun, srb);
+ list_move(&srb->list, &dcb->srb_waiting_list);
+}
+
+
+static void srb_waiting_to_going_move(struct DeviceCtlBlk *dcb,
+ struct ScsiReqBlk *srb)
+{
+ dprintkdbg(DBG_0,
+ "srb_waiting_to_going_move: (0x%p) <%02i-%i> srb=%p\n",
+ srb->cmd, dcb->target_id, dcb->target_lun, srb);
+ list_move(&srb->list, &dcb->srb_going_list);
+}
+
+
+/* Sets the timer to wake us up */
+static void waiting_set_timer(struct AdapterCtlBlk *acb, unsigned long to)
+{
+ if (timer_pending(&acb->waiting_timer))
+ return;
+ init_timer(&acb->waiting_timer);
+ acb->waiting_timer.function = waiting_timeout;
+ acb->waiting_timer.data = (unsigned long) acb;
+ if (time_before(jiffies + to, acb->last_reset - HZ / 2))
+ acb->waiting_timer.expires =
+ acb->last_reset - HZ / 2 + 1;
+ else
+ acb->waiting_timer.expires = jiffies + to + 1;
+ add_timer(&acb->waiting_timer);
+}
+
+
+/* Send the next command from the waiting list to the bus */
+static void waiting_process_next(struct AdapterCtlBlk *acb)
+{
+ struct DeviceCtlBlk *start = NULL;
+ struct DeviceCtlBlk *pos;
+ struct DeviceCtlBlk *dcb;
+ struct ScsiReqBlk *srb;
+ struct list_head *dcb_list_head = &acb->dcb_list;
+
+ if (acb->active_dcb
+ || (acb->acb_flag & (RESET_DETECT + RESET_DONE + RESET_DEV)))
+ return;
+
+ if (timer_pending(&acb->waiting_timer))
+ del_timer(&acb->waiting_timer);
+
+ if (list_empty(dcb_list_head))
+ return;
+
+ /*
+ * Find the starting dcb. Need to find it again in the list
+ * since the list may have changed since we set the ptr to it
+ */
+ list_for_each_entry(dcb, dcb_list_head, list)
+ if (dcb == acb->dcb_run_robin) {
+ start = dcb;
+ break;
+ }
+ if (!start) {
+ /* This can happen! */
+ start = list_entry(dcb_list_head->next, typeof(*start), list);
+ acb->dcb_run_robin = start;
+ }
+
+
+ /*
+ * Loop over the dcb, but we start somewhere (potentially) in
+ * the middle of the loop so we need to manully do this.
+ */
+ pos = start;
+ do {
+ struct list_head *waiting_list_head = &pos->srb_waiting_list;
+
+ /* Make sure, the next another device gets scheduled ... */
+ acb->dcb_run_robin = dcb_get_next(dcb_list_head,
+ acb->dcb_run_robin);
+
+ if (list_empty(waiting_list_head) ||
+ pos->max_command <= list_size(&pos->srb_going_list)) {
+ /* move to next dcb */
+ pos = dcb_get_next(dcb_list_head, pos);
+ } else {
+ srb = list_entry(waiting_list_head->next,
+ struct ScsiReqBlk, list);
+
+ /* Try to send to the bus */
+ if (!start_scsi(acb, pos, srb))
+ srb_waiting_to_going_move(pos, srb);
+ else
+ waiting_set_timer(acb, HZ/50);
+ break;
+ }
+ } while (pos != start);
+}
+
+
+/* Wake up waiting queue */
+static void waiting_timeout(unsigned long ptr)
+{
+ unsigned long flags;
+ struct AdapterCtlBlk *acb = (struct AdapterCtlBlk *)ptr;
+ dprintkdbg(DBG_1,
+ "waiting_timeout: Queue woken up by timer. acb=%p\n", acb);
+ DC395x_LOCK_IO(acb->scsi_host, flags);
+ waiting_process_next(acb);
+ DC395x_UNLOCK_IO(acb->scsi_host, flags);
+}
+
+
+/* Get the DCB for a given ID/LUN combination */
+static struct DeviceCtlBlk *find_dcb(struct AdapterCtlBlk *acb, u8 id, u8 lun)
+{
+ return acb->children[id][lun];
+}
+
+
+/* Send SCSI Request Block (srb) to adapter (acb) */
+static void send_srb(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb)
+{
+ struct DeviceCtlBlk *dcb = srb->dcb;
+
+ if (dcb->max_command <= list_size(&dcb->srb_going_list) ||
+ acb->active_dcb ||
+ (acb->acb_flag & (RESET_DETECT + RESET_DONE + RESET_DEV))) {
+ srb_waiting_append(dcb, srb);
+ waiting_process_next(acb);
+ return;
+ }
+
+ if (!start_scsi(acb, dcb, srb))
+ srb_going_append(dcb, srb);
+ else {
+ srb_waiting_insert(dcb, srb);
+ waiting_set_timer(acb, HZ / 50);
+ }
+}
+
+/* Prepare SRB for being sent to Device DCB w/ command *cmd */
+static void build_srb(struct scsi_cmnd *cmd, struct DeviceCtlBlk *dcb,
+ struct ScsiReqBlk *srb)
+{
+ int nseg;
+ enum dma_data_direction dir = cmd->sc_data_direction;
+ dprintkdbg(DBG_0, "build_srb: (0x%p) <%02i-%i>\n",
+ cmd, dcb->target_id, dcb->target_lun);
+
+ srb->dcb = dcb;
+ srb->cmd = cmd;
+ srb->sg_count = 0;
+ srb->total_xfer_length = 0;
+ srb->sg_bus_addr = 0;
+ srb->sg_index = 0;
+ srb->adapter_status = 0;
+ srb->target_status = 0;
+ srb->msg_count = 0;
+ srb->status = 0;
+ srb->flag = 0;
+ srb->state = 0;
+ srb->retry_count = 0;
+ srb->tag_number = TAG_NONE;
+ srb->scsi_phase = PH_BUS_FREE; /* initial phase */
+ srb->end_message = 0;
+
+ nseg = scsi_dma_map(cmd);
+ BUG_ON(nseg < 0);
+
+ if (dir == PCI_DMA_NONE || !nseg) {
+ dprintkdbg(DBG_0,
+ "build_srb: [0] len=%d buf=%p use_sg=%d !MAP=%08x\n",
+ cmd->bufflen, scsi_sglist(cmd), scsi_sg_count(cmd),
+ srb->segment_x[0].address);
+ } else {
+ int i;
+ u32 reqlen = scsi_bufflen(cmd);
+ struct scatterlist *sg;
+ struct SGentry *sgp = srb->segment_x;
+
+ srb->sg_count = nseg;
+
+ dprintkdbg(DBG_0,
+ "build_srb: [n] len=%d buf=%p use_sg=%d segs=%d\n",
+ reqlen, scsi_sglist(cmd), scsi_sg_count(cmd),
+ srb->sg_count);
+
+ scsi_for_each_sg(cmd, sg, srb->sg_count, i) {
+ u32 busaddr = (u32)sg_dma_address(sg);
+ u32 seglen = (u32)sg->length;
+ sgp[i].address = busaddr;
+ sgp[i].length = seglen;
+ srb->total_xfer_length += seglen;
+ }
+ sgp += srb->sg_count - 1;
+
+ /*
+ * adjust last page if too big as it is allocated
+ * on even page boundaries
+ */
+ if (srb->total_xfer_length > reqlen) {
+ sgp->length -= (srb->total_xfer_length - reqlen);
+ srb->total_xfer_length = reqlen;
+ }
+
+ /* Fixup for WIDE padding - make sure length is even */
+ if (dcb->sync_period & WIDE_SYNC &&
+ srb->total_xfer_length % 2) {
+ srb->total_xfer_length++;
+ sgp->length++;
+ }
+
+ srb->sg_bus_addr = pci_map_single(dcb->acb->dev,
+ srb->segment_x,
+ SEGMENTX_LEN,
+ PCI_DMA_TODEVICE);
+
+ dprintkdbg(DBG_SG, "build_srb: [n] map sg %p->%08x(%05x)\n",
+ srb->segment_x, srb->sg_bus_addr, SEGMENTX_LEN);
+ }
+
+ srb->request_length = srb->total_xfer_length;
+}
+
+
+/**
+ * dc395x_queue_command - queue scsi command passed from the mid
+ * layer, invoke 'done' on completion
+ *
+ * @cmd: pointer to scsi command object
+ * @done: function pointer to be invoked on completion
+ *
+ * Returns 1 if the adapter (host) is busy, else returns 0. One
+ * reason for an adapter to be busy is that the number
+ * of outstanding queued commands is already equal to
+ * struct Scsi_Host::can_queue .
+ *
+ * Required: if struct Scsi_Host::can_queue is ever non-zero
+ * then this function is required.
+ *
+ * Locks: struct Scsi_Host::host_lock held on entry (with "irqsave")
+ * and is expected to be held on return.
+ *
+ **/
+static int dc395x_queue_command_lck(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *))
+{
+ struct DeviceCtlBlk *dcb;
+ struct ScsiReqBlk *srb;
+ struct AdapterCtlBlk *acb =
+ (struct AdapterCtlBlk *)cmd->device->host->hostdata;
+ dprintkdbg(DBG_0, "queue_command: (0x%p) <%02i-%i> cmnd=0x%02x\n",
+ cmd, cmd->device->id, (u8)cmd->device->lun, cmd->cmnd[0]);
+
+ /* Assume BAD_TARGET; will be cleared later */
+ cmd->result = DID_BAD_TARGET << 16;
+
+ /* ignore invalid targets */
+ if (cmd->device->id >= acb->scsi_host->max_id ||
+ cmd->device->lun >= acb->scsi_host->max_lun ||
+ cmd->device->lun >31) {
+ goto complete;
+ }
+
+ /* does the specified lun on the specified device exist */
+ if (!(acb->dcb_map[cmd->device->id] & (1 << cmd->device->lun))) {
+ dprintkl(KERN_INFO, "queue_command: Ignore target <%02i-%i>\n",
+ cmd->device->id, (u8)cmd->device->lun);
+ goto complete;
+ }
+
+ /* do we have a DCB for the device */
+ dcb = find_dcb(acb, cmd->device->id, cmd->device->lun);
+ if (!dcb) {
+ /* should never happen */
+ dprintkl(KERN_ERR, "queue_command: No such device <%02i-%i>",
+ cmd->device->id, (u8)cmd->device->lun);
+ goto complete;
+ }
+
+ /* set callback and clear result in the command */
+ cmd->scsi_done = done;
+ cmd->result = 0;
+
+ srb = srb_get_free(acb);
+ if (!srb)
+ {
+ /*
+ * Return 1 since we are unable to queue this command at this
+ * point in time.
+ */
+ dprintkdbg(DBG_0, "queue_command: No free srb's\n");
+ return 1;
+ }
+
+ build_srb(cmd, dcb, srb);
+
+ if (!list_empty(&dcb->srb_waiting_list)) {
+ /* append to waiting queue */
+ srb_waiting_append(dcb, srb);
+ waiting_process_next(acb);
+ } else {
+ /* process immediately */
+ send_srb(acb, srb);
+ }
+ dprintkdbg(DBG_1, "queue_command: (0x%p) done\n", cmd);
+ return 0;
+
+complete:
+ /*
+ * Complete the command immediatey, and then return 0 to
+ * indicate that we have handled the command. This is usually
+ * done when the commad is for things like non existent
+ * devices.
+ */
+ done(cmd);
+ return 0;
+}
+
+static DEF_SCSI_QCMD(dc395x_queue_command)
+
+/*
+ * Return the disk geometry for the given SCSI device.
+ */
+static int dc395x_bios_param(struct scsi_device *sdev,
+ struct block_device *bdev, sector_t capacity, int *info)
+{
+#ifdef CONFIG_SCSI_DC395x_TRMS1040_TRADMAP
+ int heads, sectors, cylinders;
+ struct AdapterCtlBlk *acb;
+ int size = capacity;
+
+ dprintkdbg(DBG_0, "dc395x_bios_param..............\n");
+ acb = (struct AdapterCtlBlk *)sdev->host->hostdata;
+ heads = 64;
+ sectors = 32;
+ cylinders = size / (heads * sectors);
+
+ if ((acb->gmode2 & NAC_GREATER_1G) && (cylinders > 1024)) {
+ heads = 255;
+ sectors = 63;
+ cylinders = size / (heads * sectors);
+ }
+ geom[0] = heads;
+ geom[1] = sectors;
+ geom[2] = cylinders;
+ return 0;
+#else
+ return scsicam_bios_param(bdev, capacity, info);
+#endif
+}
+
+
+static void dump_register_info(struct AdapterCtlBlk *acb,
+ struct DeviceCtlBlk *dcb, struct ScsiReqBlk *srb)
+{
+ u16 pstat;
+ struct pci_dev *dev = acb->dev;
+ pci_read_config_word(dev, PCI_STATUS, &pstat);
+ if (!dcb)
+ dcb = acb->active_dcb;
+ if (!srb && dcb)
+ srb = dcb->active_srb;
+ if (srb) {
+ if (!srb->cmd)
+ dprintkl(KERN_INFO, "dump: srb=%p cmd=%p OOOPS!\n",
+ srb, srb->cmd);
+ else
+ dprintkl(KERN_INFO, "dump: srb=%p cmd=%p "
+ "cmnd=0x%02x <%02i-%i>\n",
+ srb, srb->cmd,
+ srb->cmd->cmnd[0], srb->cmd->device->id,
+ (u8)srb->cmd->device->lun);
+ printk(" sglist=%p cnt=%i idx=%i len=%zu\n",
+ srb->segment_x, srb->sg_count, srb->sg_index,
+ srb->total_xfer_length);
+ printk(" state=0x%04x status=0x%02x phase=0x%02x (%sconn.)\n",
+ srb->state, srb->status, srb->scsi_phase,
+ (acb->active_dcb) ? "" : "not");
+ }
+ dprintkl(KERN_INFO, "dump: SCSI{status=0x%04x fifocnt=0x%02x "
+ "signals=0x%02x irqstat=0x%02x sync=0x%02x target=0x%02x "
+ "rselid=0x%02x ctr=0x%08x irqen=0x%02x config=0x%04x "
+ "config2=0x%02x cmd=0x%02x selto=0x%02x}\n",
+ DC395x_read16(acb, TRM_S1040_SCSI_STATUS),
+ DC395x_read8(acb, TRM_S1040_SCSI_FIFOCNT),
+ DC395x_read8(acb, TRM_S1040_SCSI_SIGNAL),
+ DC395x_read8(acb, TRM_S1040_SCSI_INTSTATUS),
+ DC395x_read8(acb, TRM_S1040_SCSI_SYNC),
+ DC395x_read8(acb, TRM_S1040_SCSI_TARGETID),
+ DC395x_read8(acb, TRM_S1040_SCSI_IDMSG),
+ DC395x_read32(acb, TRM_S1040_SCSI_COUNTER),
+ DC395x_read8(acb, TRM_S1040_SCSI_INTEN),
+ DC395x_read16(acb, TRM_S1040_SCSI_CONFIG0),
+ DC395x_read8(acb, TRM_S1040_SCSI_CONFIG2),
+ DC395x_read8(acb, TRM_S1040_SCSI_COMMAND),
+ DC395x_read8(acb, TRM_S1040_SCSI_TIMEOUT));
+ dprintkl(KERN_INFO, "dump: DMA{cmd=0x%04x fifocnt=0x%02x fstat=0x%02x "
+ "irqstat=0x%02x irqen=0x%02x cfg=0x%04x tctr=0x%08x "
+ "ctctr=0x%08x addr=0x%08x:0x%08x}\n",
+ DC395x_read16(acb, TRM_S1040_DMA_COMMAND),
+ DC395x_read8(acb, TRM_S1040_DMA_FIFOCNT),
+ DC395x_read8(acb, TRM_S1040_DMA_FIFOSTAT),
+ DC395x_read8(acb, TRM_S1040_DMA_STATUS),
+ DC395x_read8(acb, TRM_S1040_DMA_INTEN),
+ DC395x_read16(acb, TRM_S1040_DMA_CONFIG),
+ DC395x_read32(acb, TRM_S1040_DMA_XCNT),
+ DC395x_read32(acb, TRM_S1040_DMA_CXCNT),
+ DC395x_read32(acb, TRM_S1040_DMA_XHIGHADDR),
+ DC395x_read32(acb, TRM_S1040_DMA_XLOWADDR));
+ dprintkl(KERN_INFO, "dump: gen{gctrl=0x%02x gstat=0x%02x gtmr=0x%02x} "
+ "pci{status=0x%04x}\n",
+ DC395x_read8(acb, TRM_S1040_GEN_CONTROL),
+ DC395x_read8(acb, TRM_S1040_GEN_STATUS),
+ DC395x_read8(acb, TRM_S1040_GEN_TIMER),
+ pstat);
+}
+
+
+static inline void clear_fifo(struct AdapterCtlBlk *acb, char *txt)
+{
+#if debug_enabled(DBG_FIFO)
+ u8 lines = DC395x_read8(acb, TRM_S1040_SCSI_SIGNAL);
+ u8 fifocnt = DC395x_read8(acb, TRM_S1040_SCSI_FIFOCNT);
+ if (!(fifocnt & 0x40))
+ dprintkdbg(DBG_FIFO,
+ "clear_fifo: (%i bytes) on phase %02x in %s\n",
+ fifocnt & 0x3f, lines, txt);
+#endif
+ DC395x_write16(acb, TRM_S1040_SCSI_CONTROL, DO_CLRFIFO);
+}
+
+
+static void reset_dev_param(struct AdapterCtlBlk *acb)
+{
+ struct DeviceCtlBlk *dcb;
+ struct NvRamType *eeprom = &acb->eeprom;
+ dprintkdbg(DBG_0, "reset_dev_param: acb=%p\n", acb);
+
+ list_for_each_entry(dcb, &acb->dcb_list, list) {
+ u8 period_index;
+
+ dcb->sync_mode &= ~(SYNC_NEGO_DONE + WIDE_NEGO_DONE);
+ dcb->sync_period = 0;
+ dcb->sync_offset = 0;
+
+ dcb->dev_mode = eeprom->target[dcb->target_id].cfg0;
+ period_index = eeprom->target[dcb->target_id].period & 0x07;
+ dcb->min_nego_period = clock_period[period_index];
+ if (!(dcb->dev_mode & NTC_DO_WIDE_NEGO)
+ || !(acb->config & HCC_WIDE_CARD))
+ dcb->sync_mode &= ~WIDE_NEGO_ENABLE;
+ }
+}
+
+
+/*
+ * perform a hard reset on the SCSI bus
+ * @cmd - some command for this host (for fetching hooks)
+ * Returns: SUCCESS (0x2002) on success, else FAILED (0x2003).
+ */
+static int __dc395x_eh_bus_reset(struct scsi_cmnd *cmd)
+{
+ struct AdapterCtlBlk *acb =
+ (struct AdapterCtlBlk *)cmd->device->host->hostdata;
+ dprintkl(KERN_INFO,
+ "eh_bus_reset: (0%p) target=<%02i-%i> cmd=%p\n",
+ cmd, cmd->device->id, (u8)cmd->device->lun, cmd);
+
+ if (timer_pending(&acb->waiting_timer))
+ del_timer(&acb->waiting_timer);
+
+ /*
+ * disable interrupt
+ */
+ DC395x_write8(acb, TRM_S1040_DMA_INTEN, 0x00);
+ DC395x_write8(acb, TRM_S1040_SCSI_INTEN, 0x00);
+ DC395x_write8(acb, TRM_S1040_SCSI_CONTROL, DO_RSTMODULE);
+ DC395x_write8(acb, TRM_S1040_DMA_CONTROL, DMARESETMODULE);
+
+ reset_scsi_bus(acb);
+ udelay(500);
+
+ /* We may be in serious trouble. Wait some seconds */
+ acb->last_reset =
+ jiffies + 3 * HZ / 2 +
+ HZ * acb->eeprom.delay_time;
+
+ /*
+ * re-enable interrupt
+ */
+ /* Clear SCSI FIFO */
+ DC395x_write8(acb, TRM_S1040_DMA_CONTROL, CLRXFIFO);
+ clear_fifo(acb, "eh_bus_reset");
+ /* Delete pending IRQ */
+ DC395x_read8(acb, TRM_S1040_SCSI_INTSTATUS);
+ set_basic_config(acb);
+
+ reset_dev_param(acb);
+ doing_srb_done(acb, DID_RESET, cmd, 0);
+ acb->active_dcb = NULL;
+ acb->acb_flag = 0; /* RESET_DETECT, RESET_DONE ,RESET_DEV */
+ waiting_process_next(acb);
+
+ return SUCCESS;
+}
+
+static int dc395x_eh_bus_reset(struct scsi_cmnd *cmd)
+{
+ int rc;
+
+ spin_lock_irq(cmd->device->host->host_lock);
+ rc = __dc395x_eh_bus_reset(cmd);
+ spin_unlock_irq(cmd->device->host->host_lock);
+
+ return rc;
+}
+
+/*
+ * abort an errant SCSI command
+ * @cmd - command to be aborted
+ * Returns: SUCCESS (0x2002) on success, else FAILED (0x2003).
+ */
+static int dc395x_eh_abort(struct scsi_cmnd *cmd)
+{
+ /*
+ * Look into our command queues: If it has not been sent already,
+ * we remove it and return success. Otherwise fail.
+ */
+ struct AdapterCtlBlk *acb =
+ (struct AdapterCtlBlk *)cmd->device->host->hostdata;
+ struct DeviceCtlBlk *dcb;
+ struct ScsiReqBlk *srb;
+ dprintkl(KERN_INFO, "eh_abort: (0x%p) target=<%02i-%i> cmd=%p\n",
+ cmd, cmd->device->id, (u8)cmd->device->lun, cmd);
+
+ dcb = find_dcb(acb, cmd->device->id, cmd->device->lun);
+ if (!dcb) {
+ dprintkl(KERN_DEBUG, "eh_abort: No such device\n");
+ return FAILED;
+ }
+
+ srb = find_cmd(cmd, &dcb->srb_waiting_list);
+ if (srb) {
+ srb_waiting_remove(dcb, srb);
+ pci_unmap_srb_sense(acb, srb);
+ pci_unmap_srb(acb, srb);
+ free_tag(dcb, srb);
+ srb_free_insert(acb, srb);
+ dprintkl(KERN_DEBUG, "eh_abort: Command was waiting\n");
+ cmd->result = DID_ABORT << 16;
+ return SUCCESS;
+ }
+ srb = find_cmd(cmd, &dcb->srb_going_list);
+ if (srb) {
+ dprintkl(KERN_DEBUG, "eh_abort: Command in progress\n");
+ /* XXX: Should abort the command here */
+ } else {
+ dprintkl(KERN_DEBUG, "eh_abort: Command not found\n");
+ }
+ return FAILED;
+}
+
+
+/* SDTR */
+static void build_sdtr(struct AdapterCtlBlk *acb, struct DeviceCtlBlk *dcb,
+ struct ScsiReqBlk *srb)
+{
+ u8 *ptr = srb->msgout_buf + srb->msg_count;
+ if (srb->msg_count > 1) {
+ dprintkl(KERN_INFO,
+ "build_sdtr: msgout_buf BUSY (%i: %02x %02x)\n",
+ srb->msg_count, srb->msgout_buf[0],
+ srb->msgout_buf[1]);
+ return;
+ }
+ if (!(dcb->dev_mode & NTC_DO_SYNC_NEGO)) {
+ dcb->sync_offset = 0;
+ dcb->min_nego_period = 200 >> 2;
+ } else if (dcb->sync_offset == 0)
+ dcb->sync_offset = SYNC_NEGO_OFFSET;
+
+ *ptr++ = MSG_EXTENDED; /* (01h) */
+ *ptr++ = 3; /* length */
+ *ptr++ = EXTENDED_SDTR; /* (01h) */
+ *ptr++ = dcb->min_nego_period; /* Transfer period (in 4ns) */
+ *ptr++ = dcb->sync_offset; /* Transfer period (max. REQ/ACK dist) */
+ srb->msg_count += 5;
+ srb->state |= SRB_DO_SYNC_NEGO;
+}
+
+
+/* WDTR */
+static void build_wdtr(struct AdapterCtlBlk *acb, struct DeviceCtlBlk *dcb,
+ struct ScsiReqBlk *srb)
+{
+ u8 wide = ((dcb->dev_mode & NTC_DO_WIDE_NEGO) &
+ (acb->config & HCC_WIDE_CARD)) ? 1 : 0;
+ u8 *ptr = srb->msgout_buf + srb->msg_count;
+ if (srb->msg_count > 1) {
+ dprintkl(KERN_INFO,
+ "build_wdtr: msgout_buf BUSY (%i: %02x %02x)\n",
+ srb->msg_count, srb->msgout_buf[0],
+ srb->msgout_buf[1]);
+ return;
+ }
+ *ptr++ = MSG_EXTENDED; /* (01h) */
+ *ptr++ = 2; /* length */
+ *ptr++ = EXTENDED_WDTR; /* (03h) */
+ *ptr++ = wide;
+ srb->msg_count += 4;
+ srb->state |= SRB_DO_WIDE_NEGO;
+}
+
+
+#if 0
+/* Timer to work around chip flaw: When selecting and the bus is
+ * busy, we sometimes miss a Selection timeout IRQ */
+void selection_timeout_missed(unsigned long ptr);
+/* Sets the timer to wake us up */
+static void selto_timer(struct AdapterCtlBlk *acb)
+{
+ if (timer_pending(&acb->selto_timer))
+ return;
+ acb->selto_timer.function = selection_timeout_missed;
+ acb->selto_timer.data = (unsigned long) acb;
+ if (time_before
+ (jiffies + HZ, acb->last_reset + HZ / 2))
+ acb->selto_timer.expires =
+ acb->last_reset + HZ / 2 + 1;
+ else
+ acb->selto_timer.expires = jiffies + HZ + 1;
+ add_timer(&acb->selto_timer);
+}
+
+
+void selection_timeout_missed(unsigned long ptr)
+{
+ unsigned long flags;
+ struct AdapterCtlBlk *acb = (struct AdapterCtlBlk *)ptr;
+ struct ScsiReqBlk *srb;
+ dprintkl(KERN_DEBUG, "Chip forgot to produce SelTO IRQ!\n");
+ if (!acb->active_dcb || !acb->active_dcb->active_srb) {
+ dprintkl(KERN_DEBUG, "... but no cmd pending? Oops!\n");
+ return;
+ }
+ DC395x_LOCK_IO(acb->scsi_host, flags);
+ srb = acb->active_dcb->active_srb;
+ disconnect(acb);
+ DC395x_UNLOCK_IO(acb->scsi_host, flags);
+}
+#endif
+
+
+static u8 start_scsi(struct AdapterCtlBlk* acb, struct DeviceCtlBlk* dcb,
+ struct ScsiReqBlk* srb)
+{
+ u16 s_stat2, return_code;
+ u8 s_stat, scsicommand, i, identify_message;
+ u8 *ptr;
+ dprintkdbg(DBG_0, "start_scsi: (0x%p) <%02i-%i> srb=%p\n",
+ dcb->target_id, dcb->target_lun, srb);
+
+ srb->tag_number = TAG_NONE; /* acb->tag_max_num: had error read in eeprom */
+
+ s_stat = DC395x_read8(acb, TRM_S1040_SCSI_SIGNAL);
+ s_stat2 = 0;
+ s_stat2 = DC395x_read16(acb, TRM_S1040_SCSI_STATUS);
+#if 1
+ if (s_stat & 0x20 /* s_stat2 & 0x02000 */ ) {
+ dprintkdbg(DBG_KG, "start_scsi: (0x%p) BUSY %02x %04x\n",
+ s_stat, s_stat2);
+ /*
+ * Try anyway?
+ *
+ * We could, BUT: Sometimes the TRM_S1040 misses to produce a Selection
+ * Timeout, a Disconnect or a Reselection IRQ, so we would be screwed!
+ * (This is likely to be a bug in the hardware. Obviously, most people
+ * only have one initiator per SCSI bus.)
+ * Instead let this fail and have the timer make sure the command is
+ * tried again after a short time
+ */
+ /*selto_timer (acb); */
+ return 1;
+ }
+#endif
+ if (acb->active_dcb) {
+ dprintkl(KERN_DEBUG, "start_scsi: (0x%p) Attempt to start a"
+ "command while another command (0x%p) is active.",
+ srb->cmd,
+ acb->active_dcb->active_srb ?
+ acb->active_dcb->active_srb->cmd : 0);
+ return 1;
+ }
+ if (DC395x_read16(acb, TRM_S1040_SCSI_STATUS) & SCSIINTERRUPT) {
+ dprintkdbg(DBG_KG, "start_scsi: (0x%p) Failed (busy)\n", srb->cmd);
+ return 1;
+ }
+ /* Allow starting of SCSI commands half a second before we allow the mid-level
+ * to queue them again after a reset */
+ if (time_before(jiffies, acb->last_reset - HZ / 2)) {
+ dprintkdbg(DBG_KG, "start_scsi: Refuse cmds (reset wait)\n");
+ return 1;
+ }
+
+ /* Flush FIFO */
+ clear_fifo(acb, "start_scsi");
+ DC395x_write8(acb, TRM_S1040_SCSI_HOSTID, acb->scsi_host->this_id);
+ DC395x_write8(acb, TRM_S1040_SCSI_TARGETID, dcb->target_id);
+ DC395x_write8(acb, TRM_S1040_SCSI_SYNC, dcb->sync_period);
+ DC395x_write8(acb, TRM_S1040_SCSI_OFFSET, dcb->sync_offset);
+ srb->scsi_phase = PH_BUS_FREE; /* initial phase */
+
+ identify_message = dcb->identify_msg;
+ /*DC395x_TRM_write8(TRM_S1040_SCSI_IDMSG, identify_message); */
+ /* Don't allow disconnection for AUTO_REQSENSE: Cont.All.Cond.! */
+ if (srb->flag & AUTO_REQSENSE)
+ identify_message &= 0xBF;
+
+ if (((srb->cmd->cmnd[0] == INQUIRY)
+ || (srb->cmd->cmnd[0] == REQUEST_SENSE)
+ || (srb->flag & AUTO_REQSENSE))
+ && (((dcb->sync_mode & WIDE_NEGO_ENABLE)
+ && !(dcb->sync_mode & WIDE_NEGO_DONE))
+ || ((dcb->sync_mode & SYNC_NEGO_ENABLE)
+ && !(dcb->sync_mode & SYNC_NEGO_DONE)))
+ && (dcb->target_lun == 0)) {
+ srb->msgout_buf[0] = identify_message;
+ srb->msg_count = 1;
+ scsicommand = SCMD_SEL_ATNSTOP;
+ srb->state = SRB_MSGOUT;
+#ifndef SYNC_FIRST
+ if (dcb->sync_mode & WIDE_NEGO_ENABLE
+ && dcb->inquiry7 & SCSI_INQ_WBUS16) {
+ build_wdtr(acb, dcb, srb);
+ goto no_cmd;
+ }
+#endif
+ if (dcb->sync_mode & SYNC_NEGO_ENABLE
+ && dcb->inquiry7 & SCSI_INQ_SYNC) {
+ build_sdtr(acb, dcb, srb);
+ goto no_cmd;
+ }
+ if (dcb->sync_mode & WIDE_NEGO_ENABLE
+ && dcb->inquiry7 & SCSI_INQ_WBUS16) {
+ build_wdtr(acb, dcb, srb);
+ goto no_cmd;
+ }
+ srb->msg_count = 0;
+ }
+ /* Send identify message */
+ DC395x_write8(acb, TRM_S1040_SCSI_FIFO, identify_message);
+
+ scsicommand = SCMD_SEL_ATN;
+ srb->state = SRB_START_;
+#ifndef DC395x_NO_TAGQ
+ if ((dcb->sync_mode & EN_TAG_QUEUEING)
+ && (identify_message & 0xC0)) {
+ /* Send Tag message */
+ u32 tag_mask = 1;
+ u8 tag_number = 0;
+ while (tag_mask & dcb->tag_mask
+ && tag_number < dcb->max_command) {
+ tag_mask = tag_mask << 1;
+ tag_number++;
+ }
+ if (tag_number >= dcb->max_command) {
+ dprintkl(KERN_WARNING, "start_scsi: (0x%p) "
+ "Out of tags target=<%02i-%i>)\n",
+ srb->cmd, srb->cmd->device->id,
+ (u8)srb->cmd->device->lun);
+ srb->state = SRB_READY;
+ DC395x_write16(acb, TRM_S1040_SCSI_CONTROL,
+ DO_HWRESELECT);
+ return 1;
+ }
+ /* Send Tag id */
+ DC395x_write8(acb, TRM_S1040_SCSI_FIFO, MSG_SIMPLE_QTAG);
+ DC395x_write8(acb, TRM_S1040_SCSI_FIFO, tag_number);
+ dcb->tag_mask |= tag_mask;
+ srb->tag_number = tag_number;
+ scsicommand = SCMD_SEL_ATN3;
+ srb->state = SRB_START_;
+ }
+#endif
+/*polling:*/
+ /* Send CDB ..command block ......... */
+ dprintkdbg(DBG_KG, "start_scsi: (0x%p) <%02i-%i> cmnd=0x%02x tag=%i\n",
+ srb->cmd, srb->cmd->device->id, (u8)srb->cmd->device->lun,
+ srb->cmd->cmnd[0], srb->tag_number);
+ if (srb->flag & AUTO_REQSENSE) {
+ DC395x_write8(acb, TRM_S1040_SCSI_FIFO, REQUEST_SENSE);
+ DC395x_write8(acb, TRM_S1040_SCSI_FIFO, (dcb->target_lun << 5));
+ DC395x_write8(acb, TRM_S1040_SCSI_FIFO, 0);
+ DC395x_write8(acb, TRM_S1040_SCSI_FIFO, 0);
+ DC395x_write8(acb, TRM_S1040_SCSI_FIFO, SCSI_SENSE_BUFFERSIZE);
+ DC395x_write8(acb, TRM_S1040_SCSI_FIFO, 0);
+ } else {
+ ptr = (u8 *)srb->cmd->cmnd;
+ for (i = 0; i < srb->cmd->cmd_len; i++)
+ DC395x_write8(acb, TRM_S1040_SCSI_FIFO, *ptr++);
+ }
+ no_cmd:
+ DC395x_write16(acb, TRM_S1040_SCSI_CONTROL,
+ DO_HWRESELECT | DO_DATALATCH);
+ if (DC395x_read16(acb, TRM_S1040_SCSI_STATUS) & SCSIINTERRUPT) {
+ /*
+ * If start_scsi return 1:
+ * we caught an interrupt (must be reset or reselection ... )
+ * : Let's process it first!
+ */
+ dprintkdbg(DBG_0, "start_scsi: (0x%p) <%02i-%i> Failed - busy\n",
+ srb->cmd, dcb->target_id, dcb->target_lun);
+ srb->state = SRB_READY;
+ free_tag(dcb, srb);
+ srb->msg_count = 0;
+ return_code = 1;
+ /* This IRQ should NOT get lost, as we did not acknowledge it */
+ } else {
+ /*
+ * If start_scsi returns 0:
+ * we know that the SCSI processor is free
+ */
+ srb->scsi_phase = PH_BUS_FREE; /* initial phase */
+ dcb->active_srb = srb;
+ acb->active_dcb = dcb;
+ return_code = 0;
+ /* it's important for atn stop */
+ DC395x_write16(acb, TRM_S1040_SCSI_CONTROL,
+ DO_DATALATCH | DO_HWRESELECT);
+ /* SCSI command */
+ DC395x_write8(acb, TRM_S1040_SCSI_COMMAND, scsicommand);
+ }
+ return return_code;
+}
+
+
+#define DC395x_ENABLE_MSGOUT \
+ DC395x_write16 (acb, TRM_S1040_SCSI_CONTROL, DO_SETATN); \
+ srb->state |= SRB_MSGOUT
+
+
+/* abort command */
+static inline void enable_msgout_abort(struct AdapterCtlBlk *acb,
+ struct ScsiReqBlk *srb)
+{
+ srb->msgout_buf[0] = ABORT;
+ srb->msg_count = 1;
+ DC395x_ENABLE_MSGOUT;
+ srb->state &= ~SRB_MSGIN;
+ srb->state |= SRB_MSGOUT;
+}
+
+
+/**
+ * dc395x_handle_interrupt - Handle an interrupt that has been confirmed to
+ * have been triggered for this card.
+ *
+ * @acb: a pointer to the adpter control block
+ * @scsi_status: the status return when we checked the card
+ **/
+static void dc395x_handle_interrupt(struct AdapterCtlBlk *acb,
+ u16 scsi_status)
+{
+ struct DeviceCtlBlk *dcb;
+ struct ScsiReqBlk *srb;
+ u16 phase;
+ u8 scsi_intstatus;
+ unsigned long flags;
+ void (*dc395x_statev)(struct AdapterCtlBlk *, struct ScsiReqBlk *,
+ u16 *);
+
+ DC395x_LOCK_IO(acb->scsi_host, flags);
+
+ /* This acknowledges the IRQ */
+ scsi_intstatus = DC395x_read8(acb, TRM_S1040_SCSI_INTSTATUS);
+ if ((scsi_status & 0x2007) == 0x2002)
+ dprintkl(KERN_DEBUG,
+ "COP after COP completed? %04x\n", scsi_status);
+ if (debug_enabled(DBG_KG)) {
+ if (scsi_intstatus & INT_SELTIMEOUT)
+ dprintkdbg(DBG_KG, "handle_interrupt: Selection timeout\n");
+ }
+ /*dprintkl(KERN_DEBUG, "handle_interrupt: intstatus = 0x%02x ", scsi_intstatus); */
+
+ if (timer_pending(&acb->selto_timer))
+ del_timer(&acb->selto_timer);
+
+ if (scsi_intstatus & (INT_SELTIMEOUT | INT_DISCONNECT)) {
+ disconnect(acb); /* bus free interrupt */
+ goto out_unlock;
+ }
+ if (scsi_intstatus & INT_RESELECTED) {
+ reselect(acb);
+ goto out_unlock;
+ }
+ if (scsi_intstatus & INT_SELECT) {
+ dprintkl(KERN_INFO, "Host does not support target mode!\n");
+ goto out_unlock;
+ }
+ if (scsi_intstatus & INT_SCSIRESET) {
+ scsi_reset_detect(acb);
+ goto out_unlock;
+ }
+ if (scsi_intstatus & (INT_BUSSERVICE | INT_CMDDONE)) {
+ dcb = acb->active_dcb;
+ if (!dcb) {
+ dprintkl(KERN_DEBUG,
+ "Oops: BusService (%04x %02x) w/o ActiveDCB!\n",
+ scsi_status, scsi_intstatus);
+ goto out_unlock;
+ }
+ srb = dcb->active_srb;
+ if (dcb->flag & ABORT_DEV_) {
+ dprintkdbg(DBG_0, "MsgOut Abort Device.....\n");
+ enable_msgout_abort(acb, srb);
+ }
+
+ /* software sequential machine */
+ phase = (u16)srb->scsi_phase;
+
+ /*
+ * 62037 or 62137
+ * call dc395x_scsi_phase0[]... "phase entry"
+ * handle every phase before start transfer
+ */
+ /* data_out_phase0, phase:0 */
+ /* data_in_phase0, phase:1 */
+ /* command_phase0, phase:2 */
+ /* status_phase0, phase:3 */
+ /* nop0, phase:4 PH_BUS_FREE .. initial phase */
+ /* nop0, phase:5 PH_BUS_FREE .. initial phase */
+ /* msgout_phase0, phase:6 */
+ /* msgin_phase0, phase:7 */
+ dc395x_statev = dc395x_scsi_phase0[phase];
+ dc395x_statev(acb, srb, &scsi_status);
+
+ /*
+ * if there were any exception occurred scsi_status
+ * will be modify to bus free phase new scsi_status
+ * transfer out from ... previous dc395x_statev
+ */
+ srb->scsi_phase = scsi_status & PHASEMASK;
+ phase = (u16)scsi_status & PHASEMASK;
+
+ /*
+ * call dc395x_scsi_phase1[]... "phase entry" handle
+ * every phase to do transfer
+ */
+ /* data_out_phase1, phase:0 */
+ /* data_in_phase1, phase:1 */
+ /* command_phase1, phase:2 */
+ /* status_phase1, phase:3 */
+ /* nop1, phase:4 PH_BUS_FREE .. initial phase */
+ /* nop1, phase:5 PH_BUS_FREE .. initial phase */
+ /* msgout_phase1, phase:6 */
+ /* msgin_phase1, phase:7 */
+ dc395x_statev = dc395x_scsi_phase1[phase];
+ dc395x_statev(acb, srb, &scsi_status);
+ }
+ out_unlock:
+ DC395x_UNLOCK_IO(acb->scsi_host, flags);
+}
+
+
+static irqreturn_t dc395x_interrupt(int irq, void *dev_id)
+{
+ struct AdapterCtlBlk *acb = dev_id;
+ u16 scsi_status;
+ u8 dma_status;
+ irqreturn_t handled = IRQ_NONE;
+
+ /*
+ * Check for pending interrupt
+ */
+ scsi_status = DC395x_read16(acb, TRM_S1040_SCSI_STATUS);
+ dma_status = DC395x_read8(acb, TRM_S1040_DMA_STATUS);
+ if (scsi_status & SCSIINTERRUPT) {
+ /* interrupt pending - let's process it! */
+ dc395x_handle_interrupt(acb, scsi_status);
+ handled = IRQ_HANDLED;
+ }
+ else if (dma_status & 0x20) {
+ /* Error from the DMA engine */
+ dprintkl(KERN_INFO, "Interrupt from DMA engine: 0x%02x!\n", dma_status);
+#if 0
+ dprintkl(KERN_INFO, "This means DMA error! Try to handle ...\n");
+ if (acb->active_dcb) {
+ acb->active_dcb-> flag |= ABORT_DEV_;
+ if (acb->active_dcb->active_srb)
+ enable_msgout_abort(acb, acb->active_dcb->active_srb);
+ }
+ DC395x_write8(acb, TRM_S1040_DMA_CONTROL, ABORTXFER | CLRXFIFO);
+#else
+ dprintkl(KERN_INFO, "Ignoring DMA error (probably a bad thing) ...\n");
+ acb = NULL;
+#endif
+ handled = IRQ_HANDLED;
+ }
+
+ return handled;
+}
+
+
+static void msgout_phase0(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb,
+ u16 *pscsi_status)
+{
+ dprintkdbg(DBG_0, "msgout_phase0: (0x%p)\n", srb->cmd);
+ if (srb->state & (SRB_UNEXPECT_RESEL + SRB_ABORT_SENT))
+ *pscsi_status = PH_BUS_FREE; /*.. initial phase */
+
+ DC395x_write16(acb, TRM_S1040_SCSI_CONTROL, DO_DATALATCH); /* it's important for atn stop */
+ srb->state &= ~SRB_MSGOUT;
+}
+
+
+static void msgout_phase1(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb,
+ u16 *pscsi_status)
+{
+ u16 i;
+ u8 *ptr;
+ dprintkdbg(DBG_0, "msgout_phase1: (0x%p)\n", srb->cmd);
+
+ clear_fifo(acb, "msgout_phase1");
+ if (!(srb->state & SRB_MSGOUT)) {
+ srb->state |= SRB_MSGOUT;
+ dprintkl(KERN_DEBUG,
+ "msgout_phase1: (0x%p) Phase unexpected\n",
+ srb->cmd); /* So what ? */
+ }
+ if (!srb->msg_count) {
+ dprintkdbg(DBG_0, "msgout_phase1: (0x%p) NOP msg\n",
+ srb->cmd);
+ DC395x_write8(acb, TRM_S1040_SCSI_FIFO, MSG_NOP);
+ DC395x_write16(acb, TRM_S1040_SCSI_CONTROL, DO_DATALATCH); /* it's important for atn stop */
+ DC395x_write8(acb, TRM_S1040_SCSI_COMMAND, SCMD_FIFO_OUT);
+ return;
+ }
+ ptr = (u8 *)srb->msgout_buf;
+ for (i = 0; i < srb->msg_count; i++)
+ DC395x_write8(acb, TRM_S1040_SCSI_FIFO, *ptr++);
+ srb->msg_count = 0;
+ if (srb->msgout_buf[0] == MSG_ABORT)
+ srb->state = SRB_ABORT_SENT;
+
+ DC395x_write8(acb, TRM_S1040_SCSI_COMMAND, SCMD_FIFO_OUT);
+}
+
+
+static void command_phase0(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb,
+ u16 *pscsi_status)
+{
+ dprintkdbg(DBG_0, "command_phase0: (0x%p)\n", srb->cmd);
+ DC395x_write16(acb, TRM_S1040_SCSI_CONTROL, DO_DATALATCH);
+}
+
+
+static void command_phase1(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb,
+ u16 *pscsi_status)
+{
+ struct DeviceCtlBlk *dcb;
+ u8 *ptr;
+ u16 i;
+ dprintkdbg(DBG_0, "command_phase1: (0x%p)\n", srb->cmd);
+
+ clear_fifo(acb, "command_phase1");
+ DC395x_write16(acb, TRM_S1040_SCSI_CONTROL, DO_CLRATN);
+ if (!(srb->flag & AUTO_REQSENSE)) {
+ ptr = (u8 *)srb->cmd->cmnd;
+ for (i = 0; i < srb->cmd->cmd_len; i++) {
+ DC395x_write8(acb, TRM_S1040_SCSI_FIFO, *ptr);
+ ptr++;
+ }
+ } else {
+ DC395x_write8(acb, TRM_S1040_SCSI_FIFO, REQUEST_SENSE);
+ dcb = acb->active_dcb;
+ /* target id */
+ DC395x_write8(acb, TRM_S1040_SCSI_FIFO, (dcb->target_lun << 5));
+ DC395x_write8(acb, TRM_S1040_SCSI_FIFO, 0);
+ DC395x_write8(acb, TRM_S1040_SCSI_FIFO, 0);
+ DC395x_write8(acb, TRM_S1040_SCSI_FIFO, SCSI_SENSE_BUFFERSIZE);
+ DC395x_write8(acb, TRM_S1040_SCSI_FIFO, 0);
+ }
+ srb->state |= SRB_COMMAND;
+ /* it's important for atn stop */
+ DC395x_write16(acb, TRM_S1040_SCSI_CONTROL, DO_DATALATCH);
+ /* SCSI command */
+ DC395x_write8(acb, TRM_S1040_SCSI_COMMAND, SCMD_FIFO_OUT);
+}
+
+
+/*
+ * Verify that the remaining space in the hw sg lists is the same as
+ * the count of remaining bytes in srb->total_xfer_length
+ */
+static void sg_verify_length(struct ScsiReqBlk *srb)
+{
+ if (debug_enabled(DBG_SG)) {
+ unsigned len = 0;
+ unsigned idx = srb->sg_index;
+ struct SGentry *psge = srb->segment_x + idx;
+ for (; idx < srb->sg_count; psge++, idx++)
+ len += psge->length;
+ if (len != srb->total_xfer_length)
+ dprintkdbg(DBG_SG,
+ "Inconsistent SRB S/G lengths (Tot=%i, Count=%i) !!\n",
+ srb->total_xfer_length, len);
+ }
+}
+
+
+/*
+ * Compute the next Scatter Gather list index and adjust its length
+ * and address if necessary
+ */
+static void sg_update_list(struct ScsiReqBlk *srb, u32 left)
+{
+ u8 idx;
+ u32 xferred = srb->total_xfer_length - left; /* bytes transferred */
+ struct SGentry *psge = srb->segment_x + srb->sg_index;
+
+ dprintkdbg(DBG_0,
+ "sg_update_list: Transferred %i of %i bytes, %i remain\n",
+ xferred, srb->total_xfer_length, left);
+ if (xferred == 0) {
+ /* nothing to update since we did not transfer any data */
+ return;
+ }
+
+ sg_verify_length(srb);
+ srb->total_xfer_length = left; /* update remaining count */
+ for (idx = srb->sg_index; idx < srb->sg_count; idx++) {
+ if (xferred >= psge->length) {
+ /* Complete SG entries done */
+ xferred -= psge->length;
+ } else {
+ /* Partial SG entry done */
+ psge->length -= xferred;
+ psge->address += xferred;
+ srb->sg_index = idx;
+ pci_dma_sync_single_for_device(srb->dcb->
+ acb->dev,
+ srb->sg_bus_addr,
+ SEGMENTX_LEN,
+ PCI_DMA_TODEVICE);
+ break;
+ }
+ psge++;
+ }
+ sg_verify_length(srb);
+}
+
+
+/*
+ * We have transferred a single byte (PIO mode?) and need to update
+ * the count of bytes remaining (total_xfer_length) and update the sg
+ * entry to either point to next byte in the current sg entry, or of
+ * already at the end to point to the start of the next sg entry
+ */
+static void sg_subtract_one(struct ScsiReqBlk *srb)
+{
+ sg_update_list(srb, srb->total_xfer_length - 1);
+}
+
+
+/*
+ * cleanup_after_transfer
+ *
+ * Makes sure, DMA and SCSI engine are empty, after the transfer has finished
+ * KG: Currently called from StatusPhase1 ()
+ * Should probably also be called from other places
+ * Best might be to call it in DataXXPhase0, if new phase will differ
+ */
+static void cleanup_after_transfer(struct AdapterCtlBlk *acb,
+ struct ScsiReqBlk *srb)
+{
+ /*DC395x_write8 (TRM_S1040_DMA_STATUS, FORCEDMACOMP); */
+ if (DC395x_read16(acb, TRM_S1040_DMA_COMMAND) & 0x0001) { /* read */
+ if (!(DC395x_read8(acb, TRM_S1040_SCSI_FIFOCNT) & 0x40))
+ clear_fifo(acb, "cleanup/in");
+ if (!(DC395x_read8(acb, TRM_S1040_DMA_FIFOSTAT) & 0x80))
+ DC395x_write8(acb, TRM_S1040_DMA_CONTROL, CLRXFIFO);
+ } else { /* write */
+ if (!(DC395x_read8(acb, TRM_S1040_DMA_FIFOSTAT) & 0x80))
+ DC395x_write8(acb, TRM_S1040_DMA_CONTROL, CLRXFIFO);
+ if (!(DC395x_read8(acb, TRM_S1040_SCSI_FIFOCNT) & 0x40))
+ clear_fifo(acb, "cleanup/out");
+ }
+ DC395x_write16(acb, TRM_S1040_SCSI_CONTROL, DO_DATALATCH);
+}
+
+
+/*
+ * Those no of bytes will be transferred w/ PIO through the SCSI FIFO
+ * Seems to be needed for unknown reasons; could be a hardware bug :-(
+ */
+#define DC395x_LASTPIO 4
+
+
+static void data_out_phase0(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb,
+ u16 *pscsi_status)
+{
+ struct DeviceCtlBlk *dcb = srb->dcb;
+ u16 scsi_status = *pscsi_status;
+ u32 d_left_counter = 0;
+ dprintkdbg(DBG_0, "data_out_phase0: (0x%p) <%02i-%i>\n",
+ srb->cmd, srb->cmd->device->id, (u8)srb->cmd->device->lun);
+
+ /*
+ * KG: We need to drain the buffers before we draw any conclusions!
+ * This means telling the DMA to push the rest into SCSI, telling
+ * SCSI to push the rest to the bus.
+ * However, the device might have been the one to stop us (phase
+ * change), and the data in transit just needs to be accounted so
+ * it can be retransmitted.)
+ */
+ /*
+ * KG: Stop DMA engine pushing more data into the SCSI FIFO
+ * If we need more data, the DMA SG list will be freshly set up, anyway
+ */
+ dprintkdbg(DBG_PIO, "data_out_phase0: "
+ "DMA{fifocnt=0x%02x fifostat=0x%02x} "
+ "SCSI{fifocnt=0x%02x cnt=0x%06x status=0x%04x} total=0x%06x\n",
+ DC395x_read8(acb, TRM_S1040_DMA_FIFOCNT),
+ DC395x_read8(acb, TRM_S1040_DMA_FIFOSTAT),
+ DC395x_read8(acb, TRM_S1040_SCSI_FIFOCNT),
+ DC395x_read32(acb, TRM_S1040_SCSI_COUNTER), scsi_status,
+ srb->total_xfer_length);
+ DC395x_write8(acb, TRM_S1040_DMA_CONTROL, STOPDMAXFER | CLRXFIFO);
+
+ if (!(srb->state & SRB_XFERPAD)) {
+ if (scsi_status & PARITYERROR)
+ srb->status |= PARITY_ERROR;
+
+ /*
+ * KG: Right, we can't just rely on the SCSI_COUNTER, because this
+ * is the no of bytes it got from the DMA engine not the no it
+ * transferred successfully to the device. (And the difference could
+ * be as much as the FIFO size, I guess ...)
+ */
+ if (!(scsi_status & SCSIXFERDONE)) {
+ /*
+ * when data transfer from DMA FIFO to SCSI FIFO
+ * if there was some data left in SCSI FIFO
+ */
+ d_left_counter =
+ (u32)(DC395x_read8(acb, TRM_S1040_SCSI_FIFOCNT) &
+ 0x1F);
+ if (dcb->sync_period & WIDE_SYNC)
+ d_left_counter <<= 1;
+
+ dprintkdbg(DBG_KG, "data_out_phase0: FIFO contains %i %s\n"
+ "SCSI{fifocnt=0x%02x cnt=0x%08x} "
+ "DMA{fifocnt=0x%04x cnt=0x%02x ctr=0x%08x}\n",
+ DC395x_read8(acb, TRM_S1040_SCSI_FIFOCNT),
+ (dcb->sync_period & WIDE_SYNC) ? "words" : "bytes",
+ DC395x_read8(acb, TRM_S1040_SCSI_FIFOCNT),
+ DC395x_read32(acb, TRM_S1040_SCSI_COUNTER),
+ DC395x_read8(acb, TRM_S1040_DMA_FIFOCNT),
+ DC395x_read8(acb, TRM_S1040_DMA_FIFOSTAT),
+ DC395x_read32(acb, TRM_S1040_DMA_CXCNT));
+ }
+ /*
+ * calculate all the residue data that not yet tranfered
+ * SCSI transfer counter + left in SCSI FIFO data
+ *
+ * .....TRM_S1040_SCSI_COUNTER (24bits)
+ * The counter always decrement by one for every SCSI byte transfer.
+ * .....TRM_S1040_SCSI_FIFOCNT ( 5bits)
+ * The counter is SCSI FIFO offset counter (in units of bytes or! words)
+ */
+ if (srb->total_xfer_length > DC395x_LASTPIO)
+ d_left_counter +=
+ DC395x_read32(acb, TRM_S1040_SCSI_COUNTER);
+
+ /* Is this a good idea? */
+ /*clear_fifo(acb, "DOP1"); */
+ /* KG: What is this supposed to be useful for? WIDE padding stuff? */
+ if (d_left_counter == 1 && dcb->sync_period & WIDE_SYNC
+ && scsi_bufflen(srb->cmd) % 2) {
+ d_left_counter = 0;
+ dprintkl(KERN_INFO,
+ "data_out_phase0: Discard 1 byte (0x%02x)\n",
+ scsi_status);
+ }
+ /*
+ * KG: Oops again. Same thinko as above: The SCSI might have been
+ * faster than the DMA engine, so that it ran out of data.
+ * In that case, we have to do just nothing!
+ * But: Why the interrupt: No phase change. No XFERCNT_2_ZERO. Or?
+ */
+ /*
+ * KG: This is nonsense: We have been WRITING data to the bus
+ * If the SCSI engine has no bytes left, how should the DMA engine?
+ */
+ if (d_left_counter == 0) {
+ srb->total_xfer_length = 0;
+ } else {
+ /*
+ * if transfer not yet complete
+ * there were some data residue in SCSI FIFO or
+ * SCSI transfer counter not empty
+ */
+ long oldxferred =
+ srb->total_xfer_length - d_left_counter;
+ const int diff =
+ (dcb->sync_period & WIDE_SYNC) ? 2 : 1;
+ sg_update_list(srb, d_left_counter);
+ /* KG: Most ugly hack! Apparently, this works around a chip bug */
+ if ((srb->segment_x[srb->sg_index].length ==
+ diff && scsi_sg_count(srb->cmd))
+ || ((oldxferred & ~PAGE_MASK) ==
+ (PAGE_SIZE - diff))
+ ) {
+ dprintkl(KERN_INFO, "data_out_phase0: "
+ "Work around chip bug (%i)?\n", diff);
+ d_left_counter =
+ srb->total_xfer_length - diff;
+ sg_update_list(srb, d_left_counter);
+ /*srb->total_xfer_length -= diff; */
+ /*srb->virt_addr += diff; */
+ /*if (srb->cmd->use_sg) */
+ /* srb->sg_index++; */
+ }
+ }
+ }
+ if ((*pscsi_status & PHASEMASK) != PH_DATA_OUT) {
+ cleanup_after_transfer(acb, srb);
+ }
+}
+
+
+static void data_out_phase1(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb,
+ u16 *pscsi_status)
+{
+ dprintkdbg(DBG_0, "data_out_phase1: (0x%p) <%02i-%i>\n",
+ srb->cmd, srb->cmd->device->id, (u8)srb->cmd->device->lun);
+ clear_fifo(acb, "data_out_phase1");
+ /* do prepare before transfer when data out phase */
+ data_io_transfer(acb, srb, XFERDATAOUT);
+}
+
+static void data_in_phase0(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb,
+ u16 *pscsi_status)
+{
+ u16 scsi_status = *pscsi_status;
+
+ dprintkdbg(DBG_0, "data_in_phase0: (0x%p) <%02i-%i>\n",
+ srb->cmd, srb->cmd->device->id, (u8)srb->cmd->device->lun);
+
+ /*
+ * KG: DataIn is much more tricky than DataOut. When the device is finished
+ * and switches to another phase, the SCSI engine should be finished too.
+ * But: There might still be bytes left in its FIFO to be fetched by the DMA
+ * engine and transferred to memory.
+ * We should wait for the FIFOs to be emptied by that (is there any way to
+ * enforce this?) and then stop the DMA engine, because it might think, that
+ * there are more bytes to follow. Yes, the device might disconnect prior to
+ * having all bytes transferred!
+ * Also we should make sure that all data from the DMA engine buffer's really
+ * made its way to the system memory! Some documentation on this would not
+ * seem to be a bad idea, actually.
+ */
+ if (!(srb->state & SRB_XFERPAD)) {
+ u32 d_left_counter;
+ unsigned int sc, fc;
+
+ if (scsi_status & PARITYERROR) {
+ dprintkl(KERN_INFO, "data_in_phase0: (0x%p) "
+ "Parity Error\n", srb->cmd);
+ srb->status |= PARITY_ERROR;
+ }
+ /*
+ * KG: We should wait for the DMA FIFO to be empty ...
+ * but: it would be better to wait first for the SCSI FIFO and then the
+ * the DMA FIFO to become empty? How do we know, that the device not already
+ * sent data to the FIFO in a MsgIn phase, eg.?
+ */
+ if (!(DC395x_read8(acb, TRM_S1040_DMA_FIFOSTAT) & 0x80)) {
+#if 0
+ int ctr = 6000000;
+ dprintkl(KERN_DEBUG,
+ "DIP0: Wait for DMA FIFO to flush ...\n");
+ /*DC395x_write8 (TRM_S1040_DMA_CONTROL, STOPDMAXFER); */
+ /*DC395x_write32 (TRM_S1040_SCSI_COUNTER, 7); */
+ /*DC395x_write8 (TRM_S1040_SCSI_COMMAND, SCMD_DMA_IN); */
+ while (!
+ (DC395x_read16(acb, TRM_S1040_DMA_FIFOSTAT) &
+ 0x80) && --ctr);
+ if (ctr < 6000000 - 1)
+ dprintkl(KERN_DEBUG
+ "DIP0: Had to wait for DMA ...\n");
+ if (!ctr)
+ dprintkl(KERN_ERR,
+ "Deadlock in DIP0 waiting for DMA FIFO empty!!\n");
+ /*DC395x_write32 (TRM_S1040_SCSI_COUNTER, 0); */
+#endif
+ dprintkdbg(DBG_KG, "data_in_phase0: "
+ "DMA{fifocnt=0x%02x fifostat=0x%02x}\n",
+ DC395x_read8(acb, TRM_S1040_DMA_FIFOCNT),
+ DC395x_read8(acb, TRM_S1040_DMA_FIFOSTAT));
+ }
+ /* Now: Check remainig data: The SCSI counters should tell us ... */
+ sc = DC395x_read32(acb, TRM_S1040_SCSI_COUNTER);
+ fc = DC395x_read8(acb, TRM_S1040_SCSI_FIFOCNT);
+ d_left_counter = sc + ((fc & 0x1f)
+ << ((srb->dcb->sync_period & WIDE_SYNC) ? 1 :
+ 0));
+ dprintkdbg(DBG_KG, "data_in_phase0: "
+ "SCSI{fifocnt=0x%02x%s ctr=0x%08x} "
+ "DMA{fifocnt=0x%02x fifostat=0x%02x ctr=0x%08x} "
+ "Remain{totxfer=%i scsi_fifo+ctr=%i}\n",
+ fc,
+ (srb->dcb->sync_period & WIDE_SYNC) ? "words" : "bytes",
+ sc,
+ fc,
+ DC395x_read8(acb, TRM_S1040_DMA_FIFOSTAT),
+ DC395x_read32(acb, TRM_S1040_DMA_CXCNT),
+ srb->total_xfer_length, d_left_counter);
+#if DC395x_LASTPIO
+ /* KG: Less than or equal to 4 bytes can not be transferred via DMA, it seems. */
+ if (d_left_counter
+ && srb->total_xfer_length <= DC395x_LASTPIO) {
+ size_t left_io = srb->total_xfer_length;
+
+ /*u32 addr = (srb->segment_x[srb->sg_index].address); */
+ /*sg_update_list (srb, d_left_counter); */
+ dprintkdbg(DBG_PIO, "data_in_phase0: PIO (%i %s) "
+ "for remaining %i bytes:",
+ fc & 0x1f,
+ (srb->dcb->sync_period & WIDE_SYNC) ?
+ "words" : "bytes",
+ srb->total_xfer_length);
+ if (srb->dcb->sync_period & WIDE_SYNC)
+ DC395x_write8(acb, TRM_S1040_SCSI_CONFIG2,
+ CFG2_WIDEFIFO);
+ while (left_io) {
+ unsigned char *virt, *base = NULL;
+ unsigned long flags = 0;
+ size_t len = left_io;
+ size_t offset = srb->request_length - left_io;
+
+ local_irq_save(flags);
+ /* Assumption: it's inside one page as it's at most 4 bytes and
+ I just assume it's on a 4-byte boundary */
+ base = scsi_kmap_atomic_sg(scsi_sglist(srb->cmd),
+ srb->sg_count, &offset, &len);
+ virt = base + offset;
+
+ left_io -= len;
+
+ while (len) {
+ u8 byte;
+ byte = DC395x_read8(acb, TRM_S1040_SCSI_FIFO);
+ *virt++ = byte;
+
+ if (debug_enabled(DBG_PIO))
+ printk(" %02x", byte);
+
+ d_left_counter--;
+ sg_subtract_one(srb);
+
+ len--;
+
+ fc = DC395x_read8(acb, TRM_S1040_SCSI_FIFOCNT);
+
+ if (fc == 0x40) {
+ left_io = 0;
+ break;
+ }
+ }
+
+ WARN_ON((fc != 0x40) == !d_left_counter);
+
+ if (fc == 0x40 && (srb->dcb->sync_period & WIDE_SYNC)) {
+ /* Read the last byte ... */
+ if (srb->total_xfer_length > 0) {
+ u8 byte = DC395x_read8(acb, TRM_S1040_SCSI_FIFO);
+
+ *virt++ = byte;
+ srb->total_xfer_length--;
+ if (debug_enabled(DBG_PIO))
+ printk(" %02x", byte);
+ }
+
+ DC395x_write8(acb, TRM_S1040_SCSI_CONFIG2, 0);
+ }
+
+ scsi_kunmap_atomic_sg(base);
+ local_irq_restore(flags);
+ }
+ /*printk(" %08x", *(u32*)(bus_to_virt (addr))); */
+ /*srb->total_xfer_length = 0; */
+ if (debug_enabled(DBG_PIO))
+ printk("\n");
+ }
+#endif /* DC395x_LASTPIO */
+
+#if 0
+ /*
+ * KG: This was in DATAOUT. Does it also belong here?
+ * Nobody seems to know what counter and fifo_cnt count exactly ...
+ */
+ if (!(scsi_status & SCSIXFERDONE)) {
+ /*
+ * when data transfer from DMA FIFO to SCSI FIFO
+ * if there was some data left in SCSI FIFO
+ */
+ d_left_counter =
+ (u32)(DC395x_read8(acb, TRM_S1040_SCSI_FIFOCNT) &
+ 0x1F);
+ if (srb->dcb->sync_period & WIDE_SYNC)
+ d_left_counter <<= 1;
+ /*
+ * if WIDE scsi SCSI FIFOCNT unit is word !!!
+ * so need to *= 2
+ * KG: Seems to be correct ...
+ */
+ }
+#endif
+ /* KG: This should not be needed any more! */
+ if (d_left_counter == 0
+ || (scsi_status & SCSIXFERCNT_2_ZERO)) {
+#if 0
+ int ctr = 6000000;
+ u8 TempDMAstatus;
+ do {
+ TempDMAstatus =
+ DC395x_read8(acb, TRM_S1040_DMA_STATUS);
+ } while (!(TempDMAstatus & DMAXFERCOMP) && --ctr);
+ if (!ctr)
+ dprintkl(KERN_ERR,
+ "Deadlock in DataInPhase0 waiting for DMA!!\n");
+ srb->total_xfer_length = 0;
+#endif
+ srb->total_xfer_length = d_left_counter;
+ } else { /* phase changed */
+ /*
+ * parsing the case:
+ * when a transfer not yet complete
+ * but be disconnected by target
+ * if transfer not yet complete
+ * there were some data residue in SCSI FIFO or
+ * SCSI transfer counter not empty
+ */
+ sg_update_list(srb, d_left_counter);
+ }
+ }
+ /* KG: The target may decide to disconnect: Empty FIFO before! */
+ if ((*pscsi_status & PHASEMASK) != PH_DATA_IN) {
+ cleanup_after_transfer(acb, srb);
+ }
+}
+
+
+static void data_in_phase1(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb,
+ u16 *pscsi_status)
+{
+ dprintkdbg(DBG_0, "data_in_phase1: (0x%p) <%02i-%i>\n",
+ srb->cmd, srb->cmd->device->id, (u8)srb->cmd->device->lun);
+ data_io_transfer(acb, srb, XFERDATAIN);
+}
+
+
+static void data_io_transfer(struct AdapterCtlBlk *acb,
+ struct ScsiReqBlk *srb, u16 io_dir)
+{
+ struct DeviceCtlBlk *dcb = srb->dcb;
+ u8 bval;
+ dprintkdbg(DBG_0,
+ "data_io_transfer: (0x%p) <%02i-%i> %c len=%i, sg=(%i/%i)\n",
+ srb->cmd, srb->cmd->device->id, (u8)srb->cmd->device->lun,
+ ((io_dir & DMACMD_DIR) ? 'r' : 'w'),
+ srb->total_xfer_length, srb->sg_index, srb->sg_count);
+ if (srb == acb->tmp_srb)
+ dprintkl(KERN_ERR, "data_io_transfer: Using tmp_srb!\n");
+ if (srb->sg_index >= srb->sg_count) {
+ /* can't happen? out of bounds error */
+ return;
+ }
+
+ if (srb->total_xfer_length > DC395x_LASTPIO) {
+ u8 dma_status = DC395x_read8(acb, TRM_S1040_DMA_STATUS);
+ /*
+ * KG: What should we do: Use SCSI Cmd 0x90/0x92?
+ * Maybe, even ABORTXFER would be appropriate
+ */
+ if (dma_status & XFERPENDING) {
+ dprintkl(KERN_DEBUG, "data_io_transfer: Xfer pending! "
+ "Expect trouble!\n");
+ dump_register_info(acb, dcb, srb);
+ DC395x_write8(acb, TRM_S1040_DMA_CONTROL, CLRXFIFO);
+ }
+ /* clear_fifo(acb, "IO"); */
+ /*
+ * load what physical address of Scatter/Gather list table
+ * want to be transfer
+ */
+ srb->state |= SRB_DATA_XFER;
+ DC395x_write32(acb, TRM_S1040_DMA_XHIGHADDR, 0);
+ if (scsi_sg_count(srb->cmd)) { /* with S/G */
+ io_dir |= DMACMD_SG;
+ DC395x_write32(acb, TRM_S1040_DMA_XLOWADDR,
+ srb->sg_bus_addr +
+ sizeof(struct SGentry) *
+ srb->sg_index);
+ /* load how many bytes in the sg list table */
+ DC395x_write32(acb, TRM_S1040_DMA_XCNT,
+ ((u32)(srb->sg_count -
+ srb->sg_index) << 3));
+ } else { /* without S/G */
+ io_dir &= ~DMACMD_SG;
+ DC395x_write32(acb, TRM_S1040_DMA_XLOWADDR,
+ srb->segment_x[0].address);
+ DC395x_write32(acb, TRM_S1040_DMA_XCNT,
+ srb->segment_x[0].length);
+ }
+ /* load total transfer length (24bits) max value 16Mbyte */
+ DC395x_write32(acb, TRM_S1040_SCSI_COUNTER,
+ srb->total_xfer_length);
+ DC395x_write16(acb, TRM_S1040_SCSI_CONTROL, DO_DATALATCH); /* it's important for atn stop */
+ if (io_dir & DMACMD_DIR) { /* read */
+ DC395x_write8(acb, TRM_S1040_SCSI_COMMAND,
+ SCMD_DMA_IN);
+ DC395x_write16(acb, TRM_S1040_DMA_COMMAND, io_dir);
+ } else {
+ DC395x_write16(acb, TRM_S1040_DMA_COMMAND, io_dir);
+ DC395x_write8(acb, TRM_S1040_SCSI_COMMAND,
+ SCMD_DMA_OUT);
+ }
+
+ }
+#if DC395x_LASTPIO
+ else if (srb->total_xfer_length > 0) { /* The last four bytes: Do PIO */
+ /*
+ * load what physical address of Scatter/Gather list table
+ * want to be transfer
+ */
+ srb->state |= SRB_DATA_XFER;
+ /* load total transfer length (24bits) max value 16Mbyte */
+ DC395x_write32(acb, TRM_S1040_SCSI_COUNTER,
+ srb->total_xfer_length);
+ DC395x_write16(acb, TRM_S1040_SCSI_CONTROL, DO_DATALATCH); /* it's important for atn stop */
+ if (io_dir & DMACMD_DIR) { /* read */
+ DC395x_write8(acb, TRM_S1040_SCSI_COMMAND,
+ SCMD_FIFO_IN);
+ } else { /* write */
+ int ln = srb->total_xfer_length;
+ size_t left_io = srb->total_xfer_length;
+
+ if (srb->dcb->sync_period & WIDE_SYNC)
+ DC395x_write8(acb, TRM_S1040_SCSI_CONFIG2,
+ CFG2_WIDEFIFO);
+
+ while (left_io) {
+ unsigned char *virt, *base = NULL;
+ unsigned long flags = 0;
+ size_t len = left_io;
+ size_t offset = srb->request_length - left_io;
+
+ local_irq_save(flags);
+ /* Again, max 4 bytes */
+ base = scsi_kmap_atomic_sg(scsi_sglist(srb->cmd),
+ srb->sg_count, &offset, &len);
+ virt = base + offset;
+
+ left_io -= len;
+
+ while (len--) {
+ if (debug_enabled(DBG_PIO))
+ printk(" %02x", *virt);
+
+ DC395x_write8(acb, TRM_S1040_SCSI_FIFO, *virt++);
+
+ sg_subtract_one(srb);
+ }
+
+ scsi_kunmap_atomic_sg(base);
+ local_irq_restore(flags);
+ }
+ if (srb->dcb->sync_period & WIDE_SYNC) {
+ if (ln % 2) {
+ DC395x_write8(acb, TRM_S1040_SCSI_FIFO, 0);
+ if (debug_enabled(DBG_PIO))
+ printk(" |00");
+ }
+ DC395x_write8(acb, TRM_S1040_SCSI_CONFIG2, 0);
+ }
+ /*DC395x_write32(acb, TRM_S1040_SCSI_COUNTER, ln); */
+ if (debug_enabled(DBG_PIO))
+ printk("\n");
+ DC395x_write8(acb, TRM_S1040_SCSI_COMMAND,
+ SCMD_FIFO_OUT);
+ }
+ }
+#endif /* DC395x_LASTPIO */
+ else { /* xfer pad */
+ u8 data = 0, data2 = 0;
+ if (srb->sg_count) {
+ srb->adapter_status = H_OVER_UNDER_RUN;
+ srb->status |= OVER_RUN;
+ }
+ /*
+ * KG: despite the fact that we are using 16 bits I/O ops
+ * the SCSI FIFO is only 8 bits according to the docs
+ * (we can set bit 1 in 0x8f to serialize FIFO access ...)
+ */
+ if (dcb->sync_period & WIDE_SYNC) {
+ DC395x_write32(acb, TRM_S1040_SCSI_COUNTER, 2);
+ DC395x_write8(acb, TRM_S1040_SCSI_CONFIG2,
+ CFG2_WIDEFIFO);
+ if (io_dir & DMACMD_DIR) {
+ data = DC395x_read8(acb, TRM_S1040_SCSI_FIFO);
+ data2 = DC395x_read8(acb, TRM_S1040_SCSI_FIFO);
+ } else {
+ /* Danger, Robinson: If you find KGs
+ * scattered over the wide disk, the driver
+ * or chip is to blame :-( */
+ DC395x_write8(acb, TRM_S1040_SCSI_FIFO, 'K');
+ DC395x_write8(acb, TRM_S1040_SCSI_FIFO, 'G');
+ }
+ DC395x_write8(acb, TRM_S1040_SCSI_CONFIG2, 0);
+ } else {
+ DC395x_write32(acb, TRM_S1040_SCSI_COUNTER, 1);
+ /* Danger, Robinson: If you find a collection of Ks on your disk
+ * something broke :-( */
+ if (io_dir & DMACMD_DIR)
+ data = DC395x_read8(acb, TRM_S1040_SCSI_FIFO);
+ else
+ DC395x_write8(acb, TRM_S1040_SCSI_FIFO, 'K');
+ }
+ srb->state |= SRB_XFERPAD;
+ DC395x_write16(acb, TRM_S1040_SCSI_CONTROL, DO_DATALATCH); /* it's important for atn stop */
+ /* SCSI command */
+ bval = (io_dir & DMACMD_DIR) ? SCMD_FIFO_IN : SCMD_FIFO_OUT;
+ DC395x_write8(acb, TRM_S1040_SCSI_COMMAND, bval);
+ }
+}
+
+
+static void status_phase0(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb,
+ u16 *pscsi_status)
+{
+ dprintkdbg(DBG_0, "status_phase0: (0x%p) <%02i-%i>\n",
+ srb->cmd, srb->cmd->device->id, (u8)srb->cmd->device->lun);
+ srb->target_status = DC395x_read8(acb, TRM_S1040_SCSI_FIFO);
+ srb->end_message = DC395x_read8(acb, TRM_S1040_SCSI_FIFO); /* get message */
+ srb->state = SRB_COMPLETED;
+ *pscsi_status = PH_BUS_FREE; /*.. initial phase */
+ DC395x_write16(acb, TRM_S1040_SCSI_CONTROL, DO_DATALATCH); /* it's important for atn stop */
+ DC395x_write8(acb, TRM_S1040_SCSI_COMMAND, SCMD_MSGACCEPT);
+}
+
+
+static void status_phase1(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb,
+ u16 *pscsi_status)
+{
+ dprintkdbg(DBG_0, "status_phase1: (0x%p) <%02i-%i>\n",
+ srb->cmd, srb->cmd->device->id, (u8)srb->cmd->device->lun);
+ srb->state = SRB_STATUS;
+ DC395x_write16(acb, TRM_S1040_SCSI_CONTROL, DO_DATALATCH); /* it's important for atn stop */
+ DC395x_write8(acb, TRM_S1040_SCSI_COMMAND, SCMD_COMP);
+}
+
+
+/* Check if the message is complete */
+static inline u8 msgin_completed(u8 * msgbuf, u32 len)
+{
+ if (*msgbuf == EXTENDED_MESSAGE) {
+ if (len < 2)
+ return 0;
+ if (len < msgbuf[1] + 2)
+ return 0;
+ } else if (*msgbuf >= 0x20 && *msgbuf <= 0x2f) /* two byte messages */
+ if (len < 2)
+ return 0;
+ return 1;
+}
+
+/* reject_msg */
+static inline void msgin_reject(struct AdapterCtlBlk *acb,
+ struct ScsiReqBlk *srb)
+{
+ srb->msgout_buf[0] = MESSAGE_REJECT;
+ srb->msg_count = 1;
+ DC395x_ENABLE_MSGOUT;
+ srb->state &= ~SRB_MSGIN;
+ srb->state |= SRB_MSGOUT;
+ dprintkl(KERN_INFO, "msgin_reject: 0x%02x <%02i-%i>\n",
+ srb->msgin_buf[0],
+ srb->dcb->target_id, srb->dcb->target_lun);
+}
+
+
+static struct ScsiReqBlk *msgin_qtag(struct AdapterCtlBlk *acb,
+ struct DeviceCtlBlk *dcb, u8 tag)
+{
+ struct ScsiReqBlk *srb = NULL;
+ struct ScsiReqBlk *i;
+ dprintkdbg(DBG_0, "msgin_qtag: (0x%p) tag=%i srb=%p\n",
+ srb->cmd, tag, srb);
+
+ if (!(dcb->tag_mask & (1 << tag)))
+ dprintkl(KERN_DEBUG,
+ "msgin_qtag: tag_mask=0x%08x does not reserve tag %i!\n",
+ dcb->tag_mask, tag);
+
+ if (list_empty(&dcb->srb_going_list))
+ goto mingx0;
+ list_for_each_entry(i, &dcb->srb_going_list, list) {
+ if (i->tag_number == tag) {
+ srb = i;
+ break;
+ }
+ }
+ if (!srb)
+ goto mingx0;
+
+ dprintkdbg(DBG_0, "msgin_qtag: (0x%p) <%02i-%i>\n",
+ srb->cmd, srb->dcb->target_id, srb->dcb->target_lun);
+ if (dcb->flag & ABORT_DEV_) {
+ /*srb->state = SRB_ABORT_SENT; */
+ enable_msgout_abort(acb, srb);
+ }
+
+ if (!(srb->state & SRB_DISCONNECT))
+ goto mingx0;
+
+ memcpy(srb->msgin_buf, dcb->active_srb->msgin_buf, acb->msg_len);
+ srb->state |= dcb->active_srb->state;
+ srb->state |= SRB_DATA_XFER;
+ dcb->active_srb = srb;
+ /* How can we make the DORS happy? */
+ return srb;
+
+ mingx0:
+ srb = acb->tmp_srb;
+ srb->state = SRB_UNEXPECT_RESEL;
+ dcb->active_srb = srb;
+ srb->msgout_buf[0] = MSG_ABORT_TAG;
+ srb->msg_count = 1;
+ DC395x_ENABLE_MSGOUT;
+ dprintkl(KERN_DEBUG, "msgin_qtag: Unknown tag %i - abort\n", tag);
+ return srb;
+}
+
+
+static inline void reprogram_regs(struct AdapterCtlBlk *acb,
+ struct DeviceCtlBlk *dcb)
+{
+ DC395x_write8(acb, TRM_S1040_SCSI_TARGETID, dcb->target_id);
+ DC395x_write8(acb, TRM_S1040_SCSI_SYNC, dcb->sync_period);
+ DC395x_write8(acb, TRM_S1040_SCSI_OFFSET, dcb->sync_offset);
+ set_xfer_rate(acb, dcb);
+}
+
+
+/* set async transfer mode */
+static void msgin_set_async(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb)
+{
+ struct DeviceCtlBlk *dcb = srb->dcb;
+ dprintkl(KERN_DEBUG, "msgin_set_async: No sync transfers <%02i-%i>\n",
+ dcb->target_id, dcb->target_lun);
+
+ dcb->sync_mode &= ~(SYNC_NEGO_ENABLE);
+ dcb->sync_mode |= SYNC_NEGO_DONE;
+ /*dcb->sync_period &= 0; */
+ dcb->sync_offset = 0;
+ dcb->min_nego_period = 200 >> 2; /* 200ns <=> 5 MHz */
+ srb->state &= ~SRB_DO_SYNC_NEGO;
+ reprogram_regs(acb, dcb);
+ if ((dcb->sync_mode & WIDE_NEGO_ENABLE)
+ && !(dcb->sync_mode & WIDE_NEGO_DONE)) {
+ build_wdtr(acb, dcb, srb);
+ DC395x_ENABLE_MSGOUT;
+ dprintkdbg(DBG_0, "msgin_set_async(rej): Try WDTR anyway\n");
+ }
+}
+
+
+/* set sync transfer mode */
+static void msgin_set_sync(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb)
+{
+ struct DeviceCtlBlk *dcb = srb->dcb;
+ u8 bval;
+ int fact;
+ dprintkdbg(DBG_1, "msgin_set_sync: <%02i> Sync: %ins "
+ "(%02i.%01i MHz) Offset %i\n",
+ dcb->target_id, srb->msgin_buf[3] << 2,
+ (250 / srb->msgin_buf[3]),
+ ((250 % srb->msgin_buf[3]) * 10) / srb->msgin_buf[3],
+ srb->msgin_buf[4]);
+
+ if (srb->msgin_buf[4] > 15)
+ srb->msgin_buf[4] = 15;
+ if (!(dcb->dev_mode & NTC_DO_SYNC_NEGO))
+ dcb->sync_offset = 0;
+ else if (dcb->sync_offset == 0)
+ dcb->sync_offset = srb->msgin_buf[4];
+ if (srb->msgin_buf[4] > dcb->sync_offset)
+ srb->msgin_buf[4] = dcb->sync_offset;
+ else
+ dcb->sync_offset = srb->msgin_buf[4];
+ bval = 0;
+ while (bval < 7 && (srb->msgin_buf[3] > clock_period[bval]
+ || dcb->min_nego_period >
+ clock_period[bval]))
+ bval++;
+ if (srb->msgin_buf[3] < clock_period[bval])
+ dprintkl(KERN_INFO,
+ "msgin_set_sync: Increase sync nego period to %ins\n",
+ clock_period[bval] << 2);
+ srb->msgin_buf[3] = clock_period[bval];
+ dcb->sync_period &= 0xf0;
+ dcb->sync_period |= ALT_SYNC | bval;
+ dcb->min_nego_period = srb->msgin_buf[3];
+
+ if (dcb->sync_period & WIDE_SYNC)
+ fact = 500;
+ else
+ fact = 250;
+
+ dprintkl(KERN_INFO,
+ "Target %02i: %s Sync: %ins Offset %i (%02i.%01i MB/s)\n",
+ dcb->target_id, (fact == 500) ? "Wide16" : "",
+ dcb->min_nego_period << 2, dcb->sync_offset,
+ (fact / dcb->min_nego_period),
+ ((fact % dcb->min_nego_period) * 10 +
+ dcb->min_nego_period / 2) / dcb->min_nego_period);
+
+ if (!(srb->state & SRB_DO_SYNC_NEGO)) {
+ /* Reply with corrected SDTR Message */
+ dprintkl(KERN_DEBUG, "msgin_set_sync: answer w/%ins %i\n",
+ srb->msgin_buf[3] << 2, srb->msgin_buf[4]);
+
+ memcpy(srb->msgout_buf, srb->msgin_buf, 5);
+ srb->msg_count = 5;
+ DC395x_ENABLE_MSGOUT;
+ dcb->sync_mode |= SYNC_NEGO_DONE;
+ } else {
+ if ((dcb->sync_mode & WIDE_NEGO_ENABLE)
+ && !(dcb->sync_mode & WIDE_NEGO_DONE)) {
+ build_wdtr(acb, dcb, srb);
+ DC395x_ENABLE_MSGOUT;
+ dprintkdbg(DBG_0, "msgin_set_sync: Also try WDTR\n");
+ }
+ }
+ srb->state &= ~SRB_DO_SYNC_NEGO;
+ dcb->sync_mode |= SYNC_NEGO_DONE | SYNC_NEGO_ENABLE;
+
+ reprogram_regs(acb, dcb);
+}
+
+
+static inline void msgin_set_nowide(struct AdapterCtlBlk *acb,
+ struct ScsiReqBlk *srb)
+{
+ struct DeviceCtlBlk *dcb = srb->dcb;
+ dprintkdbg(DBG_1, "msgin_set_nowide: <%02i>\n", dcb->target_id);
+
+ dcb->sync_period &= ~WIDE_SYNC;
+ dcb->sync_mode &= ~(WIDE_NEGO_ENABLE);
+ dcb->sync_mode |= WIDE_NEGO_DONE;
+ srb->state &= ~SRB_DO_WIDE_NEGO;
+ reprogram_regs(acb, dcb);
+ if ((dcb->sync_mode & SYNC_NEGO_ENABLE)
+ && !(dcb->sync_mode & SYNC_NEGO_DONE)) {
+ build_sdtr(acb, dcb, srb);
+ DC395x_ENABLE_MSGOUT;
+ dprintkdbg(DBG_0, "msgin_set_nowide: Rejected. Try SDTR anyway\n");
+ }
+}
+
+static void msgin_set_wide(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb)
+{
+ struct DeviceCtlBlk *dcb = srb->dcb;
+ u8 wide = (dcb->dev_mode & NTC_DO_WIDE_NEGO
+ && acb->config & HCC_WIDE_CARD) ? 1 : 0;
+ dprintkdbg(DBG_1, "msgin_set_wide: <%02i>\n", dcb->target_id);
+
+ if (srb->msgin_buf[3] > wide)
+ srb->msgin_buf[3] = wide;
+ /* Completed */
+ if (!(srb->state & SRB_DO_WIDE_NEGO)) {
+ dprintkl(KERN_DEBUG,
+ "msgin_set_wide: Wide nego initiated <%02i>\n",
+ dcb->target_id);
+ memcpy(srb->msgout_buf, srb->msgin_buf, 4);
+ srb->msg_count = 4;
+ srb->state |= SRB_DO_WIDE_NEGO;
+ DC395x_ENABLE_MSGOUT;
+ }
+
+ dcb->sync_mode |= (WIDE_NEGO_ENABLE | WIDE_NEGO_DONE);
+ if (srb->msgin_buf[3] > 0)
+ dcb->sync_period |= WIDE_SYNC;
+ else
+ dcb->sync_period &= ~WIDE_SYNC;
+ srb->state &= ~SRB_DO_WIDE_NEGO;
+ /*dcb->sync_mode &= ~(WIDE_NEGO_ENABLE+WIDE_NEGO_DONE); */
+ dprintkdbg(DBG_1,
+ "msgin_set_wide: Wide (%i bit) negotiated <%02i>\n",
+ (8 << srb->msgin_buf[3]), dcb->target_id);
+ reprogram_regs(acb, dcb);
+ if ((dcb->sync_mode & SYNC_NEGO_ENABLE)
+ && !(dcb->sync_mode & SYNC_NEGO_DONE)) {
+ build_sdtr(acb, dcb, srb);
+ DC395x_ENABLE_MSGOUT;
+ dprintkdbg(DBG_0, "msgin_set_wide: Also try SDTR.\n");
+ }
+}
+
+
+/*
+ * extended message codes:
+ *
+ * code description
+ *
+ * 02h Reserved
+ * 00h MODIFY DATA POINTER
+ * 01h SYNCHRONOUS DATA TRANSFER REQUEST
+ * 03h WIDE DATA TRANSFER REQUEST
+ * 04h - 7Fh Reserved
+ * 80h - FFh Vendor specific
+ */
+static void msgin_phase0(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb,
+ u16 *pscsi_status)
+{
+ struct DeviceCtlBlk *dcb = acb->active_dcb;
+ dprintkdbg(DBG_0, "msgin_phase0: (0x%p)\n", srb->cmd);
+
+ srb->msgin_buf[acb->msg_len++] = DC395x_read8(acb, TRM_S1040_SCSI_FIFO);
+ if (msgin_completed(srb->msgin_buf, acb->msg_len)) {
+ /* Now eval the msg */
+ switch (srb->msgin_buf[0]) {
+ case DISCONNECT:
+ srb->state = SRB_DISCONNECT;
+ break;
+
+ case SIMPLE_QUEUE_TAG:
+ case HEAD_OF_QUEUE_TAG:
+ case ORDERED_QUEUE_TAG:
+ srb =
+ msgin_qtag(acb, dcb,
+ srb->msgin_buf[1]);
+ break;
+
+ case MESSAGE_REJECT:
+ DC395x_write16(acb, TRM_S1040_SCSI_CONTROL,
+ DO_CLRATN | DO_DATALATCH);
+ /* A sync nego message was rejected ! */
+ if (srb->state & SRB_DO_SYNC_NEGO) {
+ msgin_set_async(acb, srb);
+ break;
+ }
+ /* A wide nego message was rejected ! */
+ if (srb->state & SRB_DO_WIDE_NEGO) {
+ msgin_set_nowide(acb, srb);
+ break;
+ }
+ enable_msgout_abort(acb, srb);
+ /*srb->state |= SRB_ABORT_SENT */
+ break;
+
+ case EXTENDED_MESSAGE:
+ /* SDTR */
+ if (srb->msgin_buf[1] == 3
+ && srb->msgin_buf[2] == EXTENDED_SDTR) {
+ msgin_set_sync(acb, srb);
+ break;
+ }
+ /* WDTR */
+ if (srb->msgin_buf[1] == 2
+ && srb->msgin_buf[2] == EXTENDED_WDTR
+ && srb->msgin_buf[3] <= 2) { /* sanity check ... */
+ msgin_set_wide(acb, srb);
+ break;
+ }
+ msgin_reject(acb, srb);
+ break;
+
+ case MSG_IGNOREWIDE:
+ /* Discard wide residual */
+ dprintkdbg(DBG_0, "msgin_phase0: Ignore Wide Residual!\n");
+ break;
+
+ case COMMAND_COMPLETE:
+ /* nothing has to be done */
+ break;
+
+ case SAVE_POINTERS:
+ /*
+ * SAVE POINTER may be ignored as we have the struct
+ * ScsiReqBlk* associated with the scsi command.
+ */
+ dprintkdbg(DBG_0, "msgin_phase0: (0x%p) "
+ "SAVE POINTER rem=%i Ignore\n",
+ srb->cmd, srb->total_xfer_length);
+ break;
+
+ case RESTORE_POINTERS:
+ dprintkdbg(DBG_0, "msgin_phase0: RESTORE POINTER. Ignore\n");
+ break;
+
+ case ABORT:
+ dprintkdbg(DBG_0, "msgin_phase0: (0x%p) "
+ "<%02i-%i> ABORT msg\n",
+ srb->cmd, dcb->target_id,
+ dcb->target_lun);
+ dcb->flag |= ABORT_DEV_;
+ enable_msgout_abort(acb, srb);
+ break;
+
+ default:
+ /* reject unknown messages */
+ if (srb->msgin_buf[0] & IDENTIFY_BASE) {
+ dprintkdbg(DBG_0, "msgin_phase0: Identify msg\n");
+ srb->msg_count = 1;
+ srb->msgout_buf[0] = dcb->identify_msg;
+ DC395x_ENABLE_MSGOUT;
+ srb->state |= SRB_MSGOUT;
+ /*break; */
+ }
+ msgin_reject(acb, srb);
+ }
+
+ /* Clear counter and MsgIn state */
+ srb->state &= ~SRB_MSGIN;
+ acb->msg_len = 0;
+ }
+ *pscsi_status = PH_BUS_FREE;
+ DC395x_write16(acb, TRM_S1040_SCSI_CONTROL, DO_DATALATCH); /* it's important ... you know! */
+ DC395x_write8(acb, TRM_S1040_SCSI_COMMAND, SCMD_MSGACCEPT);
+}
+
+
+static void msgin_phase1(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb,
+ u16 *pscsi_status)
+{
+ dprintkdbg(DBG_0, "msgin_phase1: (0x%p)\n", srb->cmd);
+ clear_fifo(acb, "msgin_phase1");
+ DC395x_write32(acb, TRM_S1040_SCSI_COUNTER, 1);
+ if (!(srb->state & SRB_MSGIN)) {
+ srb->state &= ~SRB_DISCONNECT;
+ srb->state |= SRB_MSGIN;
+ }
+ DC395x_write16(acb, TRM_S1040_SCSI_CONTROL, DO_DATALATCH); /* it's important for atn stop */
+ /* SCSI command */
+ DC395x_write8(acb, TRM_S1040_SCSI_COMMAND, SCMD_FIFO_IN);
+}
+
+
+static void nop0(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb,
+ u16 *pscsi_status)
+{
+}
+
+
+static void nop1(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb,
+ u16 *pscsi_status)
+{
+}
+
+
+static void set_xfer_rate(struct AdapterCtlBlk *acb, struct DeviceCtlBlk *dcb)
+{
+ struct DeviceCtlBlk *i;
+
+ /* set all lun device's period, offset */
+ if (dcb->identify_msg & 0x07)
+ return;
+
+ if (acb->scan_devices) {
+ current_sync_offset = dcb->sync_offset;
+ return;
+ }
+
+ list_for_each_entry(i, &acb->dcb_list, list)
+ if (i->target_id == dcb->target_id) {
+ i->sync_period = dcb->sync_period;
+ i->sync_offset = dcb->sync_offset;
+ i->sync_mode = dcb->sync_mode;
+ i->min_nego_period = dcb->min_nego_period;
+ }
+}
+
+
+static void disconnect(struct AdapterCtlBlk *acb)
+{
+ struct DeviceCtlBlk *dcb = acb->active_dcb;
+ struct ScsiReqBlk *srb;
+
+ if (!dcb) {
+ dprintkl(KERN_ERR, "disconnect: No such device\n");
+ udelay(500);
+ /* Suspend queue for a while */
+ acb->last_reset =
+ jiffies + HZ / 2 +
+ HZ * acb->eeprom.delay_time;
+ clear_fifo(acb, "disconnectEx");
+ DC395x_write16(acb, TRM_S1040_SCSI_CONTROL, DO_HWRESELECT);
+ return;
+ }
+ srb = dcb->active_srb;
+ acb->active_dcb = NULL;
+ dprintkdbg(DBG_0, "disconnect: (0x%p)\n", srb->cmd);
+
+ srb->scsi_phase = PH_BUS_FREE; /* initial phase */
+ clear_fifo(acb, "disconnect");
+ DC395x_write16(acb, TRM_S1040_SCSI_CONTROL, DO_HWRESELECT);
+ if (srb->state & SRB_UNEXPECT_RESEL) {
+ dprintkl(KERN_ERR,
+ "disconnect: Unexpected reselection <%02i-%i>\n",
+ dcb->target_id, dcb->target_lun);
+ srb->state = 0;
+ waiting_process_next(acb);
+ } else if (srb->state & SRB_ABORT_SENT) {
+ dcb->flag &= ~ABORT_DEV_;
+ acb->last_reset = jiffies + HZ / 2 + 1;
+ dprintkl(KERN_ERR, "disconnect: SRB_ABORT_SENT\n");
+ doing_srb_done(acb, DID_ABORT, srb->cmd, 1);
+ waiting_process_next(acb);
+ } else {
+ if ((srb->state & (SRB_START_ + SRB_MSGOUT))
+ || !(srb->
+ state & (SRB_DISCONNECT + SRB_COMPLETED))) {
+ /*
+ * Selection time out
+ * SRB_START_ || SRB_MSGOUT || (!SRB_DISCONNECT && !SRB_COMPLETED)
+ */
+ /* Unexp. Disc / Sel Timeout */
+ if (srb->state != SRB_START_
+ && srb->state != SRB_MSGOUT) {
+ srb->state = SRB_READY;
+ dprintkl(KERN_DEBUG,
+ "disconnect: (0x%p) Unexpected\n",
+ srb->cmd);
+ srb->target_status = SCSI_STAT_SEL_TIMEOUT;
+ goto disc1;
+ } else {
+ /* Normal selection timeout */
+ dprintkdbg(DBG_KG, "disconnect: (0x%p) "
+ "<%02i-%i> SelTO\n", srb->cmd,
+ dcb->target_id, dcb->target_lun);
+ if (srb->retry_count++ > DC395x_MAX_RETRIES
+ || acb->scan_devices) {
+ srb->target_status =
+ SCSI_STAT_SEL_TIMEOUT;
+ goto disc1;
+ }
+ free_tag(dcb, srb);
+ srb_going_to_waiting_move(dcb, srb);
+ dprintkdbg(DBG_KG,
+ "disconnect: (0x%p) Retry\n",
+ srb->cmd);
+ waiting_set_timer(acb, HZ / 20);
+ }
+ } else if (srb->state & SRB_DISCONNECT) {
+ u8 bval = DC395x_read8(acb, TRM_S1040_SCSI_SIGNAL);
+ /*
+ * SRB_DISCONNECT (This is what we expect!)
+ */
+ if (bval & 0x40) {
+ dprintkdbg(DBG_0, "disconnect: SCSI bus stat "
+ " 0x%02x: ACK set! Other controllers?\n",
+ bval);
+ /* It could come from another initiator, therefore don't do much ! */
+ } else
+ waiting_process_next(acb);
+ } else if (srb->state & SRB_COMPLETED) {
+ disc1:
+ /*
+ ** SRB_COMPLETED
+ */
+ free_tag(dcb, srb);
+ dcb->active_srb = NULL;
+ srb->state = SRB_FREE;
+ srb_done(acb, dcb, srb);
+ }
+ }
+}
+
+
+static void reselect(struct AdapterCtlBlk *acb)
+{
+ struct DeviceCtlBlk *dcb = acb->active_dcb;
+ struct ScsiReqBlk *srb = NULL;
+ u16 rsel_tar_lun_id;
+ u8 id, lun;
+ u8 arblostflag = 0;
+ dprintkdbg(DBG_0, "reselect: acb=%p\n", acb);
+
+ clear_fifo(acb, "reselect");
+ /*DC395x_write16(acb, TRM_S1040_SCSI_CONTROL, DO_HWRESELECT | DO_DATALATCH); */
+ /* Read Reselected Target ID and LUN */
+ rsel_tar_lun_id = DC395x_read16(acb, TRM_S1040_SCSI_TARGETID);
+ if (dcb) { /* Arbitration lost but Reselection win */
+ srb = dcb->active_srb;
+ if (!srb) {
+ dprintkl(KERN_DEBUG, "reselect: Arb lost Resel won, "
+ "but active_srb == NULL\n");
+ DC395x_write16(acb, TRM_S1040_SCSI_CONTROL, DO_DATALATCH); /* it's important for atn stop */
+ return;
+ }
+ /* Why the if ? */
+ if (!acb->scan_devices) {
+ dprintkdbg(DBG_KG, "reselect: (0x%p) <%02i-%i> "
+ "Arb lost but Resel win rsel=%i stat=0x%04x\n",
+ srb->cmd, dcb->target_id,
+ dcb->target_lun, rsel_tar_lun_id,
+ DC395x_read16(acb, TRM_S1040_SCSI_STATUS));
+ arblostflag = 1;
+ /*srb->state |= SRB_DISCONNECT; */
+
+ srb->state = SRB_READY;
+ free_tag(dcb, srb);
+ srb_going_to_waiting_move(dcb, srb);
+ waiting_set_timer(acb, HZ / 20);
+
+ /* return; */
+ }
+ }
+ /* Read Reselected Target Id and LUN */
+ if (!(rsel_tar_lun_id & (IDENTIFY_BASE << 8)))
+ dprintkl(KERN_DEBUG, "reselect: Expects identify msg. "
+ "Got %i!\n", rsel_tar_lun_id);
+ id = rsel_tar_lun_id & 0xff;
+ lun = (rsel_tar_lun_id >> 8) & 7;
+ dcb = find_dcb(acb, id, lun);
+ if (!dcb) {
+ dprintkl(KERN_ERR, "reselect: From non existent device "
+ "<%02i-%i>\n", id, lun);
+ DC395x_write16(acb, TRM_S1040_SCSI_CONTROL, DO_DATALATCH); /* it's important for atn stop */
+ return;
+ }
+ acb->active_dcb = dcb;
+
+ if (!(dcb->dev_mode & NTC_DO_DISCONNECT))
+ dprintkl(KERN_DEBUG, "reselect: in spite of forbidden "
+ "disconnection? <%02i-%i>\n",
+ dcb->target_id, dcb->target_lun);
+
+ if (dcb->sync_mode & EN_TAG_QUEUEING /*&& !arblostflag */) {
+ srb = acb->tmp_srb;
+ dcb->active_srb = srb;
+ } else {
+ /* There can be only one! */
+ srb = dcb->active_srb;
+ if (!srb || !(srb->state & SRB_DISCONNECT)) {
+ /*
+ * abort command
+ */
+ dprintkl(KERN_DEBUG,
+ "reselect: w/o disconnected cmds <%02i-%i>\n",
+ dcb->target_id, dcb->target_lun);
+ srb = acb->tmp_srb;
+ srb->state = SRB_UNEXPECT_RESEL;
+ dcb->active_srb = srb;
+ enable_msgout_abort(acb, srb);
+ } else {
+ if (dcb->flag & ABORT_DEV_) {
+ /*srb->state = SRB_ABORT_SENT; */
+ enable_msgout_abort(acb, srb);
+ } else
+ srb->state = SRB_DATA_XFER;
+
+ }
+ }
+ srb->scsi_phase = PH_BUS_FREE; /* initial phase */
+
+ /* Program HA ID, target ID, period and offset */
+ dprintkdbg(DBG_0, "reselect: select <%i>\n", dcb->target_id);
+ DC395x_write8(acb, TRM_S1040_SCSI_HOSTID, acb->scsi_host->this_id); /* host ID */
+ DC395x_write8(acb, TRM_S1040_SCSI_TARGETID, dcb->target_id); /* target ID */
+ DC395x_write8(acb, TRM_S1040_SCSI_OFFSET, dcb->sync_offset); /* offset */
+ DC395x_write8(acb, TRM_S1040_SCSI_SYNC, dcb->sync_period); /* sync period, wide */
+ DC395x_write16(acb, TRM_S1040_SCSI_CONTROL, DO_DATALATCH); /* it's important for atn stop */
+ /* SCSI command */
+ DC395x_write8(acb, TRM_S1040_SCSI_COMMAND, SCMD_MSGACCEPT);
+}
+
+
+static inline u8 tagq_blacklist(char *name)
+{
+#ifndef DC395x_NO_TAGQ
+#if 0
+ u8 i;
+ for (i = 0; i < BADDEVCNT; i++)
+ if (memcmp(name, DC395x_baddevname1[i], 28) == 0)
+ return 1;
+#endif
+ return 0;
+#else
+ return 1;
+#endif
+}
+
+
+static void disc_tagq_set(struct DeviceCtlBlk *dcb, struct ScsiInqData *ptr)
+{
+ /* Check for SCSI format (ANSI and Response data format) */
+ if ((ptr->Vers & 0x07) >= 2 || (ptr->RDF & 0x0F) == 2) {
+ if ((ptr->Flags & SCSI_INQ_CMDQUEUE)
+ && (dcb->dev_mode & NTC_DO_TAG_QUEUEING) &&
+ /*(dcb->dev_mode & NTC_DO_DISCONNECT) */
+ /* ((dcb->dev_type == TYPE_DISK)
+ || (dcb->dev_type == TYPE_MOD)) && */
+ !tagq_blacklist(((char *)ptr) + 8)) {
+ if (dcb->max_command == 1)
+ dcb->max_command =
+ dcb->acb->tag_max_num;
+ dcb->sync_mode |= EN_TAG_QUEUEING;
+ /*dcb->tag_mask = 0; */
+ } else
+ dcb->max_command = 1;
+ }
+}
+
+
+static void add_dev(struct AdapterCtlBlk *acb, struct DeviceCtlBlk *dcb,
+ struct ScsiInqData *ptr)
+{
+ u8 bval1 = ptr->DevType & SCSI_DEVTYPE;
+ dcb->dev_type = bval1;
+ /* if (bval1 == TYPE_DISK || bval1 == TYPE_MOD) */
+ disc_tagq_set(dcb, ptr);
+}
+
+
+/* unmap mapped pci regions from SRB */
+static void pci_unmap_srb(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb)
+{
+ struct scsi_cmnd *cmd = srb->cmd;
+ enum dma_data_direction dir = cmd->sc_data_direction;
+
+ if (scsi_sg_count(cmd) && dir != PCI_DMA_NONE) {
+ /* unmap DC395x SG list */
+ dprintkdbg(DBG_SG, "pci_unmap_srb: list=%08x(%05x)\n",
+ srb->sg_bus_addr, SEGMENTX_LEN);
+ pci_unmap_single(acb->dev, srb->sg_bus_addr,
+ SEGMENTX_LEN,
+ PCI_DMA_TODEVICE);
+ dprintkdbg(DBG_SG, "pci_unmap_srb: segs=%i buffer=%p\n",
+ scsi_sg_count(cmd), scsi_bufflen(cmd));
+ /* unmap the sg segments */
+ scsi_dma_unmap(cmd);
+ }
+}
+
+
+/* unmap mapped pci sense buffer from SRB */
+static void pci_unmap_srb_sense(struct AdapterCtlBlk *acb,
+ struct ScsiReqBlk *srb)
+{
+ if (!(srb->flag & AUTO_REQSENSE))
+ return;
+ /* Unmap sense buffer */
+ dprintkdbg(DBG_SG, "pci_unmap_srb_sense: buffer=%08x\n",
+ srb->segment_x[0].address);
+ pci_unmap_single(acb->dev, srb->segment_x[0].address,
+ srb->segment_x[0].length, PCI_DMA_FROMDEVICE);
+ /* Restore SG stuff */
+ srb->total_xfer_length = srb->xferred;
+ srb->segment_x[0].address =
+ srb->segment_x[DC395x_MAX_SG_LISTENTRY - 1].address;
+ srb->segment_x[0].length =
+ srb->segment_x[DC395x_MAX_SG_LISTENTRY - 1].length;
+}
+
+
+/*
+ * Complete execution of a SCSI command
+ * Signal completion to the generic SCSI driver
+ */
+static void srb_done(struct AdapterCtlBlk *acb, struct DeviceCtlBlk *dcb,
+ struct ScsiReqBlk *srb)
+{
+ u8 tempcnt, status;
+ struct scsi_cmnd *cmd = srb->cmd;
+ enum dma_data_direction dir = cmd->sc_data_direction;
+ int ckc_only = 1;
+
+ dprintkdbg(DBG_1, "srb_done: (0x%p) <%02i-%i>\n", srb->cmd,
+ srb->cmd->device->id, (u8)srb->cmd->device->lun);
+ dprintkdbg(DBG_SG, "srb_done: srb=%p sg=%i(%i/%i) buf=%p\n",
+ srb, scsi_sg_count(cmd), srb->sg_index, srb->sg_count,
+ scsi_sgtalbe(cmd));
+ status = srb->target_status;
+ if (srb->flag & AUTO_REQSENSE) {
+ dprintkdbg(DBG_0, "srb_done: AUTO_REQSENSE1\n");
+ pci_unmap_srb_sense(acb, srb);
+ /*
+ ** target status..........................
+ */
+ srb->flag &= ~AUTO_REQSENSE;
+ srb->adapter_status = 0;
+ srb->target_status = CHECK_CONDITION << 1;
+ if (debug_enabled(DBG_1)) {
+ switch (cmd->sense_buffer[2] & 0x0f) {
+ case NOT_READY:
+ dprintkl(KERN_DEBUG,
+ "ReqSense: NOT_READY cmnd=0x%02x <%02i-%i> stat=%i scan=%i ",
+ cmd->cmnd[0], dcb->target_id,
+ dcb->target_lun, status, acb->scan_devices);
+ break;
+ case UNIT_ATTENTION:
+ dprintkl(KERN_DEBUG,
+ "ReqSense: UNIT_ATTENTION cmnd=0x%02x <%02i-%i> stat=%i scan=%i ",
+ cmd->cmnd[0], dcb->target_id,
+ dcb->target_lun, status, acb->scan_devices);
+ break;
+ case ILLEGAL_REQUEST:
+ dprintkl(KERN_DEBUG,
+ "ReqSense: ILLEGAL_REQUEST cmnd=0x%02x <%02i-%i> stat=%i scan=%i ",
+ cmd->cmnd[0], dcb->target_id,
+ dcb->target_lun, status, acb->scan_devices);
+ break;
+ case MEDIUM_ERROR:
+ dprintkl(KERN_DEBUG,
+ "ReqSense: MEDIUM_ERROR cmnd=0x%02x <%02i-%i> stat=%i scan=%i ",
+ cmd->cmnd[0], dcb->target_id,
+ dcb->target_lun, status, acb->scan_devices);
+ break;
+ case HARDWARE_ERROR:
+ dprintkl(KERN_DEBUG,
+ "ReqSense: HARDWARE_ERROR cmnd=0x%02x <%02i-%i> stat=%i scan=%i ",
+ cmd->cmnd[0], dcb->target_id,
+ dcb->target_lun, status, acb->scan_devices);
+ break;
+ }
+ if (cmd->sense_buffer[7] >= 6)
+ printk("sense=0x%02x ASC=0x%02x ASCQ=0x%02x "
+ "(0x%08x 0x%08x)\n",
+ cmd->sense_buffer[2], cmd->sense_buffer[12],
+ cmd->sense_buffer[13],
+ *((unsigned int *)(cmd->sense_buffer + 3)),
+ *((unsigned int *)(cmd->sense_buffer + 8)));
+ else
+ printk("sense=0x%02x No ASC/ASCQ (0x%08x)\n",
+ cmd->sense_buffer[2],
+ *((unsigned int *)(cmd->sense_buffer + 3)));
+ }
+
+ if (status == (CHECK_CONDITION << 1)) {
+ cmd->result = DID_BAD_TARGET << 16;
+ goto ckc_e;
+ }
+ dprintkdbg(DBG_0, "srb_done: AUTO_REQSENSE2\n");
+
+ if (srb->total_xfer_length
+ && srb->total_xfer_length >= cmd->underflow)
+ cmd->result =
+ MK_RES_LNX(DRIVER_SENSE, DID_OK,
+ srb->end_message, CHECK_CONDITION);
+ /*SET_RES_DID(cmd->result,DID_OK) */
+ else
+ cmd->result =
+ MK_RES_LNX(DRIVER_SENSE, DID_OK,
+ srb->end_message, CHECK_CONDITION);
+
+ goto ckc_e;
+ }
+
+/*************************************************************/
+ if (status) {
+ /*
+ * target status..........................
+ */
+ if (status_byte(status) == CHECK_CONDITION) {
+ request_sense(acb, dcb, srb);
+ return;
+ } else if (status_byte(status) == QUEUE_FULL) {
+ tempcnt = (u8)list_size(&dcb->srb_going_list);
+ dprintkl(KERN_INFO, "QUEUE_FULL for dev <%02i-%i> with %i cmnds\n",
+ dcb->target_id, dcb->target_lun, tempcnt);
+ if (tempcnt > 1)
+ tempcnt--;
+ dcb->max_command = tempcnt;
+ free_tag(dcb, srb);
+ srb_going_to_waiting_move(dcb, srb);
+ waiting_set_timer(acb, HZ / 20);
+ srb->adapter_status = 0;
+ srb->target_status = 0;
+ return;
+ } else if (status == SCSI_STAT_SEL_TIMEOUT) {
+ srb->adapter_status = H_SEL_TIMEOUT;
+ srb->target_status = 0;
+ cmd->result = DID_NO_CONNECT << 16;
+ } else {
+ srb->adapter_status = 0;
+ SET_RES_DID(cmd->result, DID_ERROR);
+ SET_RES_MSG(cmd->result, srb->end_message);
+ SET_RES_TARGET(cmd->result, status);
+
+ }
+ } else {
+ /*
+ ** process initiator status..........................
+ */
+ status = srb->adapter_status;
+ if (status & H_OVER_UNDER_RUN) {
+ srb->target_status = 0;
+ SET_RES_DID(cmd->result, DID_OK);
+ SET_RES_MSG(cmd->result, srb->end_message);
+ } else if (srb->status & PARITY_ERROR) {
+ SET_RES_DID(cmd->result, DID_PARITY);
+ SET_RES_MSG(cmd->result, srb->end_message);
+ } else { /* No error */
+
+ srb->adapter_status = 0;
+ srb->target_status = 0;
+ SET_RES_DID(cmd->result, DID_OK);
+ }
+ }
+
+ if (dir != PCI_DMA_NONE && scsi_sg_count(cmd))
+ pci_dma_sync_sg_for_cpu(acb->dev, scsi_sglist(cmd),
+ scsi_sg_count(cmd), dir);
+
+ ckc_only = 0;
+/* Check Error Conditions */
+ ckc_e:
+
+ if (cmd->cmnd[0] == INQUIRY) {
+ unsigned char *base = NULL;
+ struct ScsiInqData *ptr;
+ unsigned long flags = 0;
+ struct scatterlist* sg = scsi_sglist(cmd);
+ size_t offset = 0, len = sizeof(struct ScsiInqData);
+
+ local_irq_save(flags);
+ base = scsi_kmap_atomic_sg(sg, scsi_sg_count(cmd), &offset, &len);
+ ptr = (struct ScsiInqData *)(base + offset);
+
+ if (!ckc_only && (cmd->result & RES_DID) == 0
+ && cmd->cmnd[2] == 0 && scsi_bufflen(cmd) >= 8
+ && dir != PCI_DMA_NONE && ptr && (ptr->Vers & 0x07) >= 2)
+ dcb->inquiry7 = ptr->Flags;
+
+ /*if( srb->cmd->cmnd[0] == INQUIRY && */
+ /* (host_byte(cmd->result) == DID_OK || status_byte(cmd->result) & CHECK_CONDITION) ) */
+ if ((cmd->result == (DID_OK << 16)
+ || status_byte(cmd->result) &
+ CHECK_CONDITION)) {
+ if (!dcb->init_tcq_flag) {
+ add_dev(acb, dcb, ptr);
+ dcb->init_tcq_flag = 1;
+ }
+ }
+
+ scsi_kunmap_atomic_sg(base);
+ local_irq_restore(flags);
+ }
+
+ /* Here is the info for Doug Gilbert's sg3 ... */
+ scsi_set_resid(cmd, srb->total_xfer_length);
+ /* This may be interpreted by sb. or not ... */
+ cmd->SCp.this_residual = srb->total_xfer_length;
+ cmd->SCp.buffers_residual = 0;
+ if (debug_enabled(DBG_KG)) {
+ if (srb->total_xfer_length)
+ dprintkdbg(DBG_KG, "srb_done: (0x%p) <%02i-%i> "
+ "cmnd=0x%02x Missed %i bytes\n",
+ cmd, cmd->device->id, (u8)cmd->device->lun,
+ cmd->cmnd[0], srb->total_xfer_length);
+ }
+
+ srb_going_remove(dcb, srb);
+ /* Add to free list */
+ if (srb == acb->tmp_srb)
+ dprintkl(KERN_ERR, "srb_done: ERROR! Completed cmd with tmp_srb\n");
+ else {
+ dprintkdbg(DBG_0, "srb_done: (0x%p) done result=0x%08x\n",
+ cmd, cmd->result);
+ srb_free_insert(acb, srb);
+ }
+ pci_unmap_srb(acb, srb);
+
+ cmd->scsi_done(cmd);
+ waiting_process_next(acb);
+}
+
+
+/* abort all cmds in our queues */
+static void doing_srb_done(struct AdapterCtlBlk *acb, u8 did_flag,
+ struct scsi_cmnd *cmd, u8 force)
+{
+ struct DeviceCtlBlk *dcb;
+ dprintkl(KERN_INFO, "doing_srb_done: pids ");
+
+ list_for_each_entry(dcb, &acb->dcb_list, list) {
+ struct ScsiReqBlk *srb;
+ struct ScsiReqBlk *tmp;
+ struct scsi_cmnd *p;
+
+ list_for_each_entry_safe(srb, tmp, &dcb->srb_going_list, list) {
+ enum dma_data_direction dir;
+ int result;
+
+ p = srb->cmd;
+ dir = p->sc_data_direction;
+ result = MK_RES(0, did_flag, 0, 0);
+ printk("G:%p(%02i-%i) ", p,
+ p->device->id, (u8)p->device->lun);
+ srb_going_remove(dcb, srb);
+ free_tag(dcb, srb);
+ srb_free_insert(acb, srb);
+ p->result = result;
+ pci_unmap_srb_sense(acb, srb);
+ pci_unmap_srb(acb, srb);
+ if (force) {
+ /* For new EH, we normally don't need to give commands back,
+ * as they all complete or all time out */
+ p->scsi_done(p);
+ }
+ }
+ if (!list_empty(&dcb->srb_going_list))
+ dprintkl(KERN_DEBUG,
+ "How could the ML send cmnds to the Going queue? <%02i-%i>\n",
+ dcb->target_id, dcb->target_lun);
+ if (dcb->tag_mask)
+ dprintkl(KERN_DEBUG,
+ "tag_mask for <%02i-%i> should be empty, is %08x!\n",
+ dcb->target_id, dcb->target_lun,
+ dcb->tag_mask);
+
+ /* Waiting queue */
+ list_for_each_entry_safe(srb, tmp, &dcb->srb_waiting_list, list) {
+ int result;
+ p = srb->cmd;
+
+ result = MK_RES(0, did_flag, 0, 0);
+ printk("W:%p<%02i-%i>", p, p->device->id,
+ (u8)p->device->lun);
+ srb_waiting_remove(dcb, srb);
+ srb_free_insert(acb, srb);
+ p->result = result;
+ pci_unmap_srb_sense(acb, srb);
+ pci_unmap_srb(acb, srb);
+ if (force) {
+ /* For new EH, we normally don't need to give commands back,
+ * as they all complete or all time out */
+ cmd->scsi_done(cmd);
+ }
+ }
+ if (!list_empty(&dcb->srb_waiting_list))
+ dprintkl(KERN_DEBUG, "ML queued %i cmnds again to <%02i-%i>\n",
+ list_size(&dcb->srb_waiting_list), dcb->target_id,
+ dcb->target_lun);
+ dcb->flag &= ~ABORT_DEV_;
+ }
+ printk("\n");
+}
+
+
+static void reset_scsi_bus(struct AdapterCtlBlk *acb)
+{
+ dprintkdbg(DBG_0, "reset_scsi_bus: acb=%p\n", acb);
+ acb->acb_flag |= RESET_DEV; /* RESET_DETECT, RESET_DONE, RESET_DEV */
+ DC395x_write16(acb, TRM_S1040_SCSI_CONTROL, DO_RSTSCSI);
+
+ while (!(DC395x_read8(acb, TRM_S1040_SCSI_INTSTATUS) & INT_SCSIRESET))
+ /* nothing */;
+}
+
+
+static void set_basic_config(struct AdapterCtlBlk *acb)
+{
+ u8 bval;
+ u16 wval;
+ DC395x_write8(acb, TRM_S1040_SCSI_TIMEOUT, acb->sel_timeout);
+ if (acb->config & HCC_PARITY)
+ bval = PHASELATCH | INITIATOR | BLOCKRST | PARITYCHECK;
+ else
+ bval = PHASELATCH | INITIATOR | BLOCKRST;
+
+ DC395x_write8(acb, TRM_S1040_SCSI_CONFIG0, bval);
+
+ /* program configuration 1: Act_Neg (+ Act_Neg_Enh? + Fast_Filter? + DataDis?) */
+ DC395x_write8(acb, TRM_S1040_SCSI_CONFIG1, 0x03); /* was 0x13: default */
+ /* program Host ID */
+ DC395x_write8(acb, TRM_S1040_SCSI_HOSTID, acb->scsi_host->this_id);
+ /* set ansynchronous transfer */
+ DC395x_write8(acb, TRM_S1040_SCSI_OFFSET, 0x00);
+ /* Turn LED control off */
+ wval = DC395x_read16(acb, TRM_S1040_GEN_CONTROL) & 0x7F;
+ DC395x_write16(acb, TRM_S1040_GEN_CONTROL, wval);
+ /* DMA config */
+ wval = DC395x_read16(acb, TRM_S1040_DMA_CONFIG) & ~DMA_FIFO_CTRL;
+ wval |=
+ DMA_FIFO_HALF_HALF | DMA_ENHANCE /*| DMA_MEM_MULTI_READ */ ;
+ DC395x_write16(acb, TRM_S1040_DMA_CONFIG, wval);
+ /* Clear pending interrupt status */
+ DC395x_read8(acb, TRM_S1040_SCSI_INTSTATUS);
+ /* Enable SCSI interrupt */
+ DC395x_write8(acb, TRM_S1040_SCSI_INTEN, 0x7F);
+ DC395x_write8(acb, TRM_S1040_DMA_INTEN, EN_SCSIINTR | EN_DMAXFERERROR
+ /*| EN_DMAXFERABORT | EN_DMAXFERCOMP | EN_FORCEDMACOMP */
+ );
+}
+
+
+static void scsi_reset_detect(struct AdapterCtlBlk *acb)
+{
+ dprintkl(KERN_INFO, "scsi_reset_detect: acb=%p\n", acb);
+ /* delay half a second */
+ if (timer_pending(&acb->waiting_timer))
+ del_timer(&acb->waiting_timer);
+
+ DC395x_write8(acb, TRM_S1040_SCSI_CONTROL, DO_RSTMODULE);
+ DC395x_write8(acb, TRM_S1040_DMA_CONTROL, DMARESETMODULE);
+ /*DC395x_write8(acb, TRM_S1040_DMA_CONTROL,STOPDMAXFER); */
+ udelay(500);
+ /* Maybe we locked up the bus? Then lets wait even longer ... */
+ acb->last_reset =
+ jiffies + 5 * HZ / 2 +
+ HZ * acb->eeprom.delay_time;
+
+ clear_fifo(acb, "scsi_reset_detect");
+ set_basic_config(acb);
+ /*1.25 */
+ /*DC395x_write16(acb, TRM_S1040_SCSI_CONTROL, DO_HWRESELECT); */
+
+ if (acb->acb_flag & RESET_DEV) { /* RESET_DETECT, RESET_DONE, RESET_DEV */
+ acb->acb_flag |= RESET_DONE;
+ } else {
+ acb->acb_flag |= RESET_DETECT;
+ reset_dev_param(acb);
+ doing_srb_done(acb, DID_RESET, NULL, 1);
+ /*DC395x_RecoverSRB( acb ); */
+ acb->active_dcb = NULL;
+ acb->acb_flag = 0;
+ waiting_process_next(acb);
+ }
+}
+
+
+static void request_sense(struct AdapterCtlBlk *acb, struct DeviceCtlBlk *dcb,
+ struct ScsiReqBlk *srb)
+{
+ struct scsi_cmnd *cmd = srb->cmd;
+ dprintkdbg(DBG_1, "request_sense: (0x%p) <%02i-%i>\n",
+ cmd, cmd->device->id, (u8)cmd->device->lun);
+
+ srb->flag |= AUTO_REQSENSE;
+ srb->adapter_status = 0;
+ srb->target_status = 0;
+
+ /* KG: Can this prevent crap sense data ? */
+ memset(cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
+
+ /* Save some data */
+ srb->segment_x[DC395x_MAX_SG_LISTENTRY - 1].address =
+ srb->segment_x[0].address;
+ srb->segment_x[DC395x_MAX_SG_LISTENTRY - 1].length =
+ srb->segment_x[0].length;
+ srb->xferred = srb->total_xfer_length;
+ /* srb->segment_x : a one entry of S/G list table */
+ srb->total_xfer_length = SCSI_SENSE_BUFFERSIZE;
+ srb->segment_x[0].length = SCSI_SENSE_BUFFERSIZE;
+ /* Map sense buffer */
+ srb->segment_x[0].address =
+ pci_map_single(acb->dev, cmd->sense_buffer,
+ SCSI_SENSE_BUFFERSIZE, PCI_DMA_FROMDEVICE);
+ dprintkdbg(DBG_SG, "request_sense: map buffer %p->%08x(%05x)\n",
+ cmd->sense_buffer, srb->segment_x[0].address,
+ SCSI_SENSE_BUFFERSIZE);
+ srb->sg_count = 1;
+ srb->sg_index = 0;
+
+ if (start_scsi(acb, dcb, srb)) { /* Should only happen, if sb. else grabs the bus */
+ dprintkl(KERN_DEBUG,
+ "request_sense: (0x%p) failed <%02i-%i>\n",
+ srb->cmd, dcb->target_id, dcb->target_lun);
+ srb_going_to_waiting_move(dcb, srb);
+ waiting_set_timer(acb, HZ / 100);
+ }
+}
+
+
+/**
+ * device_alloc - Allocate a new device instance. This create the
+ * devices instance and sets up all the data items. The adapter
+ * instance is required to obtain confiuration information for this
+ * device. This does *not* add this device to the adapters device
+ * list.
+ *
+ * @acb: The adapter to obtain configuration information from.
+ * @target: The target for the new device.
+ * @lun: The lun for the new device.
+ *
+ * Return the new device if successful or NULL on failure.
+ **/
+static struct DeviceCtlBlk *device_alloc(struct AdapterCtlBlk *acb,
+ u8 target, u8 lun)
+{
+ struct NvRamType *eeprom = &acb->eeprom;
+ u8 period_index = eeprom->target[target].period & 0x07;
+ struct DeviceCtlBlk *dcb;
+
+ dcb = kmalloc(sizeof(struct DeviceCtlBlk), GFP_ATOMIC);
+ dprintkdbg(DBG_0, "device_alloc: <%02i-%i>\n", target, lun);
+ if (!dcb)
+ return NULL;
+ dcb->acb = NULL;
+ INIT_LIST_HEAD(&dcb->srb_going_list);
+ INIT_LIST_HEAD(&dcb->srb_waiting_list);
+ dcb->active_srb = NULL;
+ dcb->tag_mask = 0;
+ dcb->max_command = 1;
+ dcb->target_id = target;
+ dcb->target_lun = lun;
+ dcb->dev_mode = eeprom->target[target].cfg0;
+#ifndef DC395x_NO_DISCONNECT
+ dcb->identify_msg =
+ IDENTIFY(dcb->dev_mode & NTC_DO_DISCONNECT, lun);
+#else
+ dcb->identify_msg = IDENTIFY(0, lun);
+#endif
+ dcb->inquiry7 = 0;
+ dcb->sync_mode = 0;
+ dcb->min_nego_period = clock_period[period_index];
+ dcb->sync_period = 0;
+ dcb->sync_offset = 0;
+ dcb->flag = 0;
+
+#ifndef DC395x_NO_WIDE
+ if ((dcb->dev_mode & NTC_DO_WIDE_NEGO)
+ && (acb->config & HCC_WIDE_CARD))
+ dcb->sync_mode |= WIDE_NEGO_ENABLE;
+#endif
+#ifndef DC395x_NO_SYNC
+ if (dcb->dev_mode & NTC_DO_SYNC_NEGO)
+ if (!(lun) || current_sync_offset)
+ dcb->sync_mode |= SYNC_NEGO_ENABLE;
+#endif
+ if (dcb->target_lun != 0) {
+ /* Copy settings */
+ struct DeviceCtlBlk *p;
+ list_for_each_entry(p, &acb->dcb_list, list)
+ if (p->target_id == dcb->target_id)
+ break;
+ dprintkdbg(DBG_1,
+ "device_alloc: <%02i-%i> copy from <%02i-%i>\n",
+ dcb->target_id, dcb->target_lun,
+ p->target_id, p->target_lun);
+ dcb->sync_mode = p->sync_mode;
+ dcb->sync_period = p->sync_period;
+ dcb->min_nego_period = p->min_nego_period;
+ dcb->sync_offset = p->sync_offset;
+ dcb->inquiry7 = p->inquiry7;
+ }
+ return dcb;
+}
+
+
+/**
+ * adapter_add_device - Adds the device instance to the adaptor instance.
+ *
+ * @acb: The adapter device to be updated
+ * @dcb: A newly created and initialised device instance to add.
+ **/
+static void adapter_add_device(struct AdapterCtlBlk *acb,
+ struct DeviceCtlBlk *dcb)
+{
+ /* backpointer to adapter */
+ dcb->acb = acb;
+
+ /* set run_robin to this device if it is currently empty */
+ if (list_empty(&acb->dcb_list))
+ acb->dcb_run_robin = dcb;
+
+ /* add device to list */
+ list_add_tail(&dcb->list, &acb->dcb_list);
+
+ /* update device maps */
+ acb->dcb_map[dcb->target_id] |= (1 << dcb->target_lun);
+ acb->children[dcb->target_id][dcb->target_lun] = dcb;
+}
+
+
+/**
+ * adapter_remove_device - Removes the device instance from the adaptor
+ * instance. The device instance is not check in any way or freed by this.
+ * The caller is expected to take care of that. This will simply remove the
+ * device from the adapters data strcutures.
+ *
+ * @acb: The adapter device to be updated
+ * @dcb: A device that has previously been added to the adapter.
+ **/
+static void adapter_remove_device(struct AdapterCtlBlk *acb,
+ struct DeviceCtlBlk *dcb)
+{
+ struct DeviceCtlBlk *i;
+ struct DeviceCtlBlk *tmp;
+ dprintkdbg(DBG_0, "adapter_remove_device: <%02i-%i>\n",
+ dcb->target_id, dcb->target_lun);
+
+ /* fix up any pointers to this device that we have in the adapter */
+ if (acb->active_dcb == dcb)
+ acb->active_dcb = NULL;
+ if (acb->dcb_run_robin == dcb)
+ acb->dcb_run_robin = dcb_get_next(&acb->dcb_list, dcb);
+
+ /* unlink from list */
+ list_for_each_entry_safe(i, tmp, &acb->dcb_list, list)
+ if (dcb == i) {
+ list_del(&i->list);
+ break;
+ }
+
+ /* clear map and children */
+ acb->dcb_map[dcb->target_id] &= ~(1 << dcb->target_lun);
+ acb->children[dcb->target_id][dcb->target_lun] = NULL;
+ dcb->acb = NULL;
+}
+
+
+/**
+ * adapter_remove_and_free_device - Removes a single device from the adapter
+ * and then frees the device information.
+ *
+ * @acb: The adapter device to be updated
+ * @dcb: A device that has previously been added to the adapter.
+ */
+static void adapter_remove_and_free_device(struct AdapterCtlBlk *acb,
+ struct DeviceCtlBlk *dcb)
+{
+ if (list_size(&dcb->srb_going_list) > 1) {
+ dprintkdbg(DBG_1, "adapter_remove_and_free_device: <%02i-%i> "
+ "Won't remove because of %i active requests.\n",
+ dcb->target_id, dcb->target_lun,
+ list_size(&dcb->srb_going_list));
+ return;
+ }
+ adapter_remove_device(acb, dcb);
+ kfree(dcb);
+}
+
+
+/**
+ * adapter_remove_and_free_all_devices - Removes and frees all of the
+ * devices associated with the specified adapter.
+ *
+ * @acb: The adapter from which all devices should be removed.
+ **/
+static void adapter_remove_and_free_all_devices(struct AdapterCtlBlk* acb)
+{
+ struct DeviceCtlBlk *dcb;
+ struct DeviceCtlBlk *tmp;
+ dprintkdbg(DBG_1, "adapter_remove_and_free_all_devices: num=%i\n",
+ list_size(&acb->dcb_list));
+
+ list_for_each_entry_safe(dcb, tmp, &acb->dcb_list, list)
+ adapter_remove_and_free_device(acb, dcb);
+}
+
+
+/**
+ * dc395x_slave_alloc - Called by the scsi mid layer to tell us about a new
+ * scsi device that we need to deal with. We allocate a new device and then
+ * insert that device into the adapters device list.
+ *
+ * @scsi_device: The new scsi device that we need to handle.
+ **/
+static int dc395x_slave_alloc(struct scsi_device *scsi_device)
+{
+ struct AdapterCtlBlk *acb = (struct AdapterCtlBlk *)scsi_device->host->hostdata;
+ struct DeviceCtlBlk *dcb;
+
+ dcb = device_alloc(acb, scsi_device->id, scsi_device->lun);
+ if (!dcb)
+ return -ENOMEM;
+ adapter_add_device(acb, dcb);
+
+ return 0;
+}
+
+
+/**
+ * dc395x_slave_destroy - Called by the scsi mid layer to tell us about a
+ * device that is going away.
+ *
+ * @scsi_device: The new scsi device that we need to handle.
+ **/
+static void dc395x_slave_destroy(struct scsi_device *scsi_device)
+{
+ struct AdapterCtlBlk *acb = (struct AdapterCtlBlk *)scsi_device->host->hostdata;
+ struct DeviceCtlBlk *dcb = find_dcb(acb, scsi_device->id, scsi_device->lun);
+ if (dcb)
+ adapter_remove_and_free_device(acb, dcb);
+}
+
+
+
+
+/**
+ * trms1040_wait_30us: wait for 30 us
+ *
+ * Waits for 30us (using the chip by the looks of it..)
+ *
+ * @io_port: base I/O address
+ **/
+static void trms1040_wait_30us(unsigned long io_port)
+{
+ /* ScsiPortStallExecution(30); wait 30 us */
+ outb(5, io_port + TRM_S1040_GEN_TIMER);
+ while (!(inb(io_port + TRM_S1040_GEN_STATUS) & GTIMEOUT))
+ /* nothing */ ;
+}
+
+
+/**
+ * trms1040_write_cmd - write the secified command and address to
+ * chip
+ *
+ * @io_port: base I/O address
+ * @cmd: SB + op code (command) to send
+ * @addr: address to send
+ **/
+static void trms1040_write_cmd(unsigned long io_port, u8 cmd, u8 addr)
+{
+ int i;
+ u8 send_data;
+
+ /* program SB + OP code */
+ for (i = 0; i < 3; i++, cmd <<= 1) {
+ send_data = NVR_SELECT;
+ if (cmd & 0x04) /* Start from bit 2 */
+ send_data |= NVR_BITOUT;
+
+ outb(send_data, io_port + TRM_S1040_GEN_NVRAM);
+ trms1040_wait_30us(io_port);
+ outb((send_data | NVR_CLOCK),
+ io_port + TRM_S1040_GEN_NVRAM);
+ trms1040_wait_30us(io_port);
+ }
+
+ /* send address */
+ for (i = 0; i < 7; i++, addr <<= 1) {
+ send_data = NVR_SELECT;
+ if (addr & 0x40) /* Start from bit 6 */
+ send_data |= NVR_BITOUT;
+
+ outb(send_data, io_port + TRM_S1040_GEN_NVRAM);
+ trms1040_wait_30us(io_port);
+ outb((send_data | NVR_CLOCK),
+ io_port + TRM_S1040_GEN_NVRAM);
+ trms1040_wait_30us(io_port);
+ }
+ outb(NVR_SELECT, io_port + TRM_S1040_GEN_NVRAM);
+ trms1040_wait_30us(io_port);
+}
+
+
+/**
+ * trms1040_set_data - store a single byte in the eeprom
+ *
+ * Called from write all to write a single byte into the SSEEPROM
+ * Which is done one bit at a time.
+ *
+ * @io_port: base I/O address
+ * @addr: offset into EEPROM
+ * @byte: bytes to write
+ **/
+static void trms1040_set_data(unsigned long io_port, u8 addr, u8 byte)
+{
+ int i;
+ u8 send_data;
+
+ /* Send write command & address */
+ trms1040_write_cmd(io_port, 0x05, addr);
+
+ /* Write data */
+ for (i = 0; i < 8; i++, byte <<= 1) {
+ send_data = NVR_SELECT;
+ if (byte & 0x80) /* Start from bit 7 */
+ send_data |= NVR_BITOUT;
+
+ outb(send_data, io_port + TRM_S1040_GEN_NVRAM);
+ trms1040_wait_30us(io_port);
+ outb((send_data | NVR_CLOCK), io_port + TRM_S1040_GEN_NVRAM);
+ trms1040_wait_30us(io_port);
+ }
+ outb(NVR_SELECT, io_port + TRM_S1040_GEN_NVRAM);
+ trms1040_wait_30us(io_port);
+
+ /* Disable chip select */
+ outb(0, io_port + TRM_S1040_GEN_NVRAM);
+ trms1040_wait_30us(io_port);
+
+ outb(NVR_SELECT, io_port + TRM_S1040_GEN_NVRAM);
+ trms1040_wait_30us(io_port);
+
+ /* Wait for write ready */
+ while (1) {
+ outb((NVR_SELECT | NVR_CLOCK), io_port + TRM_S1040_GEN_NVRAM);
+ trms1040_wait_30us(io_port);
+
+ outb(NVR_SELECT, io_port + TRM_S1040_GEN_NVRAM);
+ trms1040_wait_30us(io_port);
+
+ if (inb(io_port + TRM_S1040_GEN_NVRAM) & NVR_BITIN)
+ break;
+ }
+
+ /* Disable chip select */
+ outb(0, io_port + TRM_S1040_GEN_NVRAM);
+}
+
+
+/**
+ * trms1040_write_all - write 128 bytes to the eeprom
+ *
+ * Write the supplied 128 bytes to the chips SEEPROM
+ *
+ * @eeprom: the data to write
+ * @io_port: the base io port
+ **/
+static void trms1040_write_all(struct NvRamType *eeprom, unsigned long io_port)
+{
+ u8 *b_eeprom = (u8 *)eeprom;
+ u8 addr;
+
+ /* Enable SEEPROM */
+ outb((inb(io_port + TRM_S1040_GEN_CONTROL) | EN_EEPROM),
+ io_port + TRM_S1040_GEN_CONTROL);
+
+ /* write enable */
+ trms1040_write_cmd(io_port, 0x04, 0xFF);
+ outb(0, io_port + TRM_S1040_GEN_NVRAM);
+ trms1040_wait_30us(io_port);
+
+ /* write */
+ for (addr = 0; addr < 128; addr++, b_eeprom++)
+ trms1040_set_data(io_port, addr, *b_eeprom);
+
+ /* write disable */
+ trms1040_write_cmd(io_port, 0x04, 0x00);
+ outb(0, io_port + TRM_S1040_GEN_NVRAM);
+ trms1040_wait_30us(io_port);
+
+ /* Disable SEEPROM */
+ outb((inb(io_port + TRM_S1040_GEN_CONTROL) & ~EN_EEPROM),
+ io_port + TRM_S1040_GEN_CONTROL);
+}
+
+
+/**
+ * trms1040_get_data - get a single byte from the eeprom
+ *
+ * Called from read all to read a single byte into the SSEEPROM
+ * Which is done one bit at a time.
+ *
+ * @io_port: base I/O address
+ * @addr: offset into SEEPROM
+ *
+ * Returns the byte read.
+ **/
+static u8 trms1040_get_data(unsigned long io_port, u8 addr)
+{
+ int i;
+ u8 read_byte;
+ u8 result = 0;
+
+ /* Send read command & address */
+ trms1040_write_cmd(io_port, 0x06, addr);
+
+ /* read data */
+ for (i = 0; i < 8; i++) {
+ outb((NVR_SELECT | NVR_CLOCK), io_port + TRM_S1040_GEN_NVRAM);
+ trms1040_wait_30us(io_port);
+ outb(NVR_SELECT, io_port + TRM_S1040_GEN_NVRAM);
+
+ /* Get data bit while falling edge */
+ read_byte = inb(io_port + TRM_S1040_GEN_NVRAM);
+ result <<= 1;
+ if (read_byte & NVR_BITIN)
+ result |= 1;
+
+ trms1040_wait_30us(io_port);
+ }
+
+ /* Disable chip select */
+ outb(0, io_port + TRM_S1040_GEN_NVRAM);
+ return result;
+}
+
+
+/**
+ * trms1040_read_all - read all bytes from the eeprom
+ *
+ * Read the 128 bytes from the SEEPROM.
+ *
+ * @eeprom: where to store the data
+ * @io_port: the base io port
+ **/
+static void trms1040_read_all(struct NvRamType *eeprom, unsigned long io_port)
+{
+ u8 *b_eeprom = (u8 *)eeprom;
+ u8 addr;
+
+ /* Enable SEEPROM */
+ outb((inb(io_port + TRM_S1040_GEN_CONTROL) | EN_EEPROM),
+ io_port + TRM_S1040_GEN_CONTROL);
+
+ /* read details */
+ for (addr = 0; addr < 128; addr++, b_eeprom++)
+ *b_eeprom = trms1040_get_data(io_port, addr);
+
+ /* Disable SEEPROM */
+ outb((inb(io_port + TRM_S1040_GEN_CONTROL) & ~EN_EEPROM),
+ io_port + TRM_S1040_GEN_CONTROL);
+}
+
+
+
+/**
+ * check_eeprom - get and check contents of the eeprom
+ *
+ * Read seeprom 128 bytes into the memory provider in eeprom.
+ * Checks the checksum and if it's not correct it uses a set of default
+ * values.
+ *
+ * @eeprom: caller allocated strcuture to read the eeprom data into
+ * @io_port: io port to read from
+ **/
+static void check_eeprom(struct NvRamType *eeprom, unsigned long io_port)
+{
+ u16 *w_eeprom = (u16 *)eeprom;
+ u16 w_addr;
+ u16 cksum;
+ u32 d_addr;
+ u32 *d_eeprom;
+
+ trms1040_read_all(eeprom, io_port); /* read eeprom */
+
+ cksum = 0;
+ for (w_addr = 0, w_eeprom = (u16 *)eeprom; w_addr < 64;
+ w_addr++, w_eeprom++)
+ cksum += *w_eeprom;
+ if (cksum != 0x1234) {
+ /*
+ * Checksum is wrong.
+ * Load a set of defaults into the eeprom buffer
+ */
+ dprintkl(KERN_WARNING,
+ "EEProm checksum error: using default values and options.\n");
+ eeprom->sub_vendor_id[0] = (u8)PCI_VENDOR_ID_TEKRAM;
+ eeprom->sub_vendor_id[1] = (u8)(PCI_VENDOR_ID_TEKRAM >> 8);
+ eeprom->sub_sys_id[0] = (u8)PCI_DEVICE_ID_TEKRAM_TRMS1040;
+ eeprom->sub_sys_id[1] =
+ (u8)(PCI_DEVICE_ID_TEKRAM_TRMS1040 >> 8);
+ eeprom->sub_class = 0x00;
+ eeprom->vendor_id[0] = (u8)PCI_VENDOR_ID_TEKRAM;
+ eeprom->vendor_id[1] = (u8)(PCI_VENDOR_ID_TEKRAM >> 8);
+ eeprom->device_id[0] = (u8)PCI_DEVICE_ID_TEKRAM_TRMS1040;
+ eeprom->device_id[1] =
+ (u8)(PCI_DEVICE_ID_TEKRAM_TRMS1040 >> 8);
+ eeprom->reserved = 0x00;
+
+ for (d_addr = 0, d_eeprom = (u32 *)eeprom->target;
+ d_addr < 16; d_addr++, d_eeprom++)
+ *d_eeprom = 0x00000077; /* cfg3,cfg2,period,cfg0 */
+
+ *d_eeprom++ = 0x04000F07; /* max_tag,delay_time,channel_cfg,scsi_id */
+ *d_eeprom++ = 0x00000015; /* reserved1,boot_lun,boot_target,reserved0 */
+ for (d_addr = 0; d_addr < 12; d_addr++, d_eeprom++)
+ *d_eeprom = 0x00;
+
+ /* Now load defaults (maybe set by boot/module params) */
+ set_safe_settings();
+ fix_settings();
+ eeprom_override(eeprom);
+
+ eeprom->cksum = 0x00;
+ for (w_addr = 0, cksum = 0, w_eeprom = (u16 *)eeprom;
+ w_addr < 63; w_addr++, w_eeprom++)
+ cksum += *w_eeprom;
+
+ *w_eeprom = 0x1234 - cksum;
+ trms1040_write_all(eeprom, io_port);
+ eeprom->delay_time = cfg_data[CFG_RESET_DELAY].value;
+ } else {
+ set_safe_settings();
+ eeprom_index_to_delay(eeprom);
+ eeprom_override(eeprom);
+ }
+}
+
+
+/**
+ * print_eeprom_settings - output the eeprom settings
+ * to the kernel log so people can see what they were.
+ *
+ * @eeprom: The eeprom data strucutre to show details for.
+ **/
+static void print_eeprom_settings(struct NvRamType *eeprom)
+{
+ dprintkl(KERN_INFO, "Used settings: AdapterID=%02i, Speed=%i(%02i.%01iMHz), dev_mode=0x%02x\n",
+ eeprom->scsi_id,
+ eeprom->target[0].period,
+ clock_speed[eeprom->target[0].period] / 10,
+ clock_speed[eeprom->target[0].period] % 10,
+ eeprom->target[0].cfg0);
+ dprintkl(KERN_INFO, " AdaptMode=0x%02x, Tags=%i(%02i), DelayReset=%is\n",
+ eeprom->channel_cfg, eeprom->max_tag,
+ 1 << eeprom->max_tag, eeprom->delay_time);
+}
+
+
+/* Free SG tables */
+static void adapter_sg_tables_free(struct AdapterCtlBlk *acb)
+{
+ int i;
+ const unsigned srbs_per_page = PAGE_SIZE/SEGMENTX_LEN;
+
+ for (i = 0; i < DC395x_MAX_SRB_CNT; i += srbs_per_page)
+ kfree(acb->srb_array[i].segment_x);
+}
+
+
+/*
+ * Allocate SG tables; as we have to pci_map them, an SG list (struct SGentry*)
+ * should never cross a page boundary */
+static int adapter_sg_tables_alloc(struct AdapterCtlBlk *acb)
+{
+ const unsigned mem_needed = (DC395x_MAX_SRB_CNT+1)
+ *SEGMENTX_LEN;
+ int pages = (mem_needed+(PAGE_SIZE-1))/PAGE_SIZE;
+ const unsigned srbs_per_page = PAGE_SIZE/SEGMENTX_LEN;
+ int srb_idx = 0;
+ unsigned i = 0;
+ struct SGentry *uninitialized_var(ptr);
+
+ for (i = 0; i < DC395x_MAX_SRB_CNT; i++)
+ acb->srb_array[i].segment_x = NULL;
+
+ dprintkdbg(DBG_1, "Allocate %i pages for SG tables\n", pages);
+ while (pages--) {
+ ptr = kmalloc(PAGE_SIZE, GFP_KERNEL);
+ if (!ptr) {
+ adapter_sg_tables_free(acb);
+ return 1;
+ }
+ dprintkdbg(DBG_1, "Allocate %li bytes at %p for SG segments %i\n",
+ PAGE_SIZE, ptr, srb_idx);
+ i = 0;
+ while (i < srbs_per_page && srb_idx < DC395x_MAX_SRB_CNT)
+ acb->srb_array[srb_idx++].segment_x =
+ ptr + (i++ * DC395x_MAX_SG_LISTENTRY);
+ }
+ if (i < srbs_per_page)
+ acb->srb.segment_x =
+ ptr + (i * DC395x_MAX_SG_LISTENTRY);
+ else
+ dprintkl(KERN_DEBUG, "No space for tmsrb SG table reserved?!\n");
+ return 0;
+}
+
+
+
+/**
+ * adapter_print_config - print adapter connection and termination
+ * config
+ *
+ * The io port in the adapter needs to have been set before calling
+ * this function.
+ *
+ * @acb: The adapter to print the information for.
+ **/
+static void adapter_print_config(struct AdapterCtlBlk *acb)
+{
+ u8 bval;
+
+ bval = DC395x_read8(acb, TRM_S1040_GEN_STATUS);
+ dprintkl(KERN_INFO, "%sConnectors: ",
+ ((bval & WIDESCSI) ? "(Wide) " : ""));
+ if (!(bval & CON5068))
+ printk("ext%s ", !(bval & EXT68HIGH) ? "68" : "50");
+ if (!(bval & CON68))
+ printk("int68%s ", !(bval & INT68HIGH) ? "" : "(50)");
+ if (!(bval & CON50))
+ printk("int50 ");
+ if ((bval & (CON5068 | CON50 | CON68)) ==
+ 0 /*(CON5068 | CON50 | CON68) */ )
+ printk(" Oops! (All 3?) ");
+ bval = DC395x_read8(acb, TRM_S1040_GEN_CONTROL);
+ printk(" Termination: ");
+ if (bval & DIS_TERM)
+ printk("Disabled\n");
+ else {
+ if (bval & AUTOTERM)
+ printk("Auto ");
+ if (bval & LOW8TERM)
+ printk("Low ");
+ if (bval & UP8TERM)
+ printk("High ");
+ printk("\n");
+ }
+}
+
+
+/**
+ * adapter_init_params - Initialize the various parameters in the
+ * adapter structure. Note that the pointer to the scsi_host is set
+ * early (when this instance is created) and the io_port and irq
+ * values are set later after they have been reserved. This just gets
+ * everything set to a good starting position.
+ *
+ * The eeprom structure in the adapter needs to have been set before
+ * calling this function.
+ *
+ * @acb: The adapter to initialize.
+ **/
+static void adapter_init_params(struct AdapterCtlBlk *acb)
+{
+ struct NvRamType *eeprom = &acb->eeprom;
+ int i;
+
+ /* NOTE: acb->scsi_host is set at scsi_host/acb creation time */
+ /* NOTE: acb->io_port_base is set at port registration time */
+ /* NOTE: acb->io_port_len is set at port registration time */
+
+ INIT_LIST_HEAD(&acb->dcb_list);
+ acb->dcb_run_robin = NULL;
+ acb->active_dcb = NULL;
+
+ INIT_LIST_HEAD(&acb->srb_free_list);
+ /* temp SRB for Q tag used or abort command used */
+ acb->tmp_srb = &acb->srb;
+ init_timer(&acb->waiting_timer);
+ init_timer(&acb->selto_timer);
+
+ acb->srb_count = DC395x_MAX_SRB_CNT;
+
+ acb->sel_timeout = DC395x_SEL_TIMEOUT; /* timeout=250ms */
+ /* NOTE: acb->irq_level is set at IRQ registration time */
+
+ acb->tag_max_num = 1 << eeprom->max_tag;
+ if (acb->tag_max_num > 30)
+ acb->tag_max_num = 30;
+
+ acb->acb_flag = 0; /* RESET_DETECT, RESET_DONE, RESET_DEV */
+ acb->gmode2 = eeprom->channel_cfg;
+ acb->config = 0; /* NOTE: actually set in adapter_init_chip */
+
+ if (eeprom->channel_cfg & NAC_SCANLUN)
+ acb->lun_chk = 1;
+ acb->scan_devices = 1;
+
+ acb->scsi_host->this_id = eeprom->scsi_id;
+ acb->hostid_bit = (1 << acb->scsi_host->this_id);
+
+ for (i = 0; i < DC395x_MAX_SCSI_ID; i++)
+ acb->dcb_map[i] = 0;
+
+ acb->msg_len = 0;
+
+ /* link static array of srbs into the srb free list */
+ for (i = 0; i < acb->srb_count - 1; i++)
+ srb_free_insert(acb, &acb->srb_array[i]);
+}
+
+
+/**
+ * adapter_init_host - Initialize the scsi host instance based on
+ * values that we have already stored in the adapter instance. There's
+ * some mention that a lot of these are deprecated, so we won't use
+ * them (we'll use the ones in the adapter instance) but we'll fill
+ * them in in case something else needs them.
+ *
+ * The eeprom structure, irq and io ports in the adapter need to have
+ * been set before calling this function.
+ *
+ * @host: The scsi host instance to fill in the values for.
+ **/
+static void adapter_init_scsi_host(struct Scsi_Host *host)
+{
+ struct AdapterCtlBlk *acb = (struct AdapterCtlBlk *)host->hostdata;
+ struct NvRamType *eeprom = &acb->eeprom;
+
+ host->max_cmd_len = 24;
+ host->can_queue = DC395x_MAX_CMD_QUEUE;
+ host->cmd_per_lun = DC395x_MAX_CMD_PER_LUN;
+ host->this_id = (int)eeprom->scsi_id;
+ host->io_port = acb->io_port_base;
+ host->n_io_port = acb->io_port_len;
+ host->dma_channel = -1;
+ host->unique_id = acb->io_port_base;
+ host->irq = acb->irq_level;
+ acb->last_reset = jiffies;
+
+ host->max_id = 16;
+ if (host->max_id - 1 == eeprom->scsi_id)
+ host->max_id--;
+
+ if (eeprom->channel_cfg & NAC_SCANLUN)
+ host->max_lun = 8;
+ else
+ host->max_lun = 1;
+}
+
+
+/**
+ * adapter_init_chip - Get the chip into a know state and figure out
+ * some of the settings that apply to this adapter.
+ *
+ * The io port in the adapter needs to have been set before calling
+ * this function. The config will be configured correctly on return.
+ *
+ * @acb: The adapter which we are to init.
+ **/
+static void adapter_init_chip(struct AdapterCtlBlk *acb)
+{
+ struct NvRamType *eeprom = &acb->eeprom;
+
+ /* Mask all the interrupt */
+ DC395x_write8(acb, TRM_S1040_DMA_INTEN, 0x00);
+ DC395x_write8(acb, TRM_S1040_SCSI_INTEN, 0x00);
+
+ /* Reset SCSI module */
+ DC395x_write16(acb, TRM_S1040_SCSI_CONTROL, DO_RSTMODULE);
+
+ /* Reset PCI/DMA module */
+ DC395x_write8(acb, TRM_S1040_DMA_CONTROL, DMARESETMODULE);
+ udelay(20);
+
+ /* program configuration 0 */
+ acb->config = HCC_AUTOTERM | HCC_PARITY;
+ if (DC395x_read8(acb, TRM_S1040_GEN_STATUS) & WIDESCSI)
+ acb->config |= HCC_WIDE_CARD;
+
+ if (eeprom->channel_cfg & NAC_POWERON_SCSI_RESET)
+ acb->config |= HCC_SCSI_RESET;
+
+ if (acb->config & HCC_SCSI_RESET) {
+ dprintkl(KERN_INFO, "Performing initial SCSI bus reset\n");
+ DC395x_write8(acb, TRM_S1040_SCSI_CONTROL, DO_RSTSCSI);
+
+ /*while (!( DC395x_read8(acb, TRM_S1040_SCSI_INTSTATUS) & INT_SCSIRESET )); */
+ /*spin_unlock_irq (&io_request_lock); */
+ udelay(500);
+
+ acb->last_reset =
+ jiffies + HZ / 2 +
+ HZ * acb->eeprom.delay_time;
+
+ /*spin_lock_irq (&io_request_lock); */
+ }
+}
+
+
+/**
+ * init_adapter - Grab the resource for the card, setup the adapter
+ * information, set the card into a known state, create the various
+ * tables etc etc. This basically gets all adapter information all up
+ * to date, initialised and gets the chip in sync with it.
+ *
+ * @host: This hosts adapter structure
+ * @io_port: The base I/O port
+ * @irq: IRQ
+ *
+ * Returns 0 if the initialization succeeds, any other value on
+ * failure.
+ **/
+static int adapter_init(struct AdapterCtlBlk *acb, unsigned long io_port,
+ u32 io_port_len, unsigned int irq)
+{
+ if (!request_region(io_port, io_port_len, DC395X_NAME)) {
+ dprintkl(KERN_ERR, "Failed to reserve IO region 0x%lx\n", io_port);
+ goto failed;
+ }
+ /* store port base to indicate we have registered it */
+ acb->io_port_base = io_port;
+ acb->io_port_len = io_port_len;
+
+ if (request_irq(irq, dc395x_interrupt, IRQF_SHARED, DC395X_NAME, acb)) {
+ /* release the region we just claimed */
+ dprintkl(KERN_INFO, "Failed to register IRQ\n");
+ goto failed;
+ }
+ /* store irq to indicate we have registered it */
+ acb->irq_level = irq;
+
+ /* get eeprom configuration information and command line settings etc */
+ check_eeprom(&acb->eeprom, io_port);
+ print_eeprom_settings(&acb->eeprom);
+
+ /* setup adapter control block */
+ adapter_init_params(acb);
+
+ /* display card connectors/termination settings */
+ adapter_print_config(acb);
+
+ if (adapter_sg_tables_alloc(acb)) {
+ dprintkl(KERN_DEBUG, "Memory allocation for SG tables failed\n");
+ goto failed;
+ }
+ adapter_init_scsi_host(acb->scsi_host);
+ adapter_init_chip(acb);
+ set_basic_config(acb);
+
+ dprintkdbg(DBG_0,
+ "adapter_init: acb=%p, pdcb_map=%p psrb_array=%p "
+ "size{acb=0x%04x dcb=0x%04x srb=0x%04x}\n",
+ acb, acb->dcb_map, acb->srb_array, sizeof(struct AdapterCtlBlk),
+ sizeof(struct DeviceCtlBlk), sizeof(struct ScsiReqBlk));
+ return 0;
+
+failed:
+ if (acb->irq_level)
+ free_irq(acb->irq_level, acb);
+ if (acb->io_port_base)
+ release_region(acb->io_port_base, acb->io_port_len);
+ adapter_sg_tables_free(acb);
+
+ return 1;
+}
+
+
+/**
+ * adapter_uninit_chip - cleanly shut down the scsi controller chip,
+ * stopping all operations and disabling interrupt generation on the
+ * card.
+ *
+ * @acb: The adapter which we are to shutdown.
+ **/
+static void adapter_uninit_chip(struct AdapterCtlBlk *acb)
+{
+ /* disable interrupts */
+ DC395x_write8(acb, TRM_S1040_DMA_INTEN, 0);
+ DC395x_write8(acb, TRM_S1040_SCSI_INTEN, 0);
+
+ /* reset the scsi bus */
+ if (acb->config & HCC_SCSI_RESET)
+ reset_scsi_bus(acb);
+
+ /* clear any pending interrupt state */
+ DC395x_read8(acb, TRM_S1040_SCSI_INTSTATUS);
+}
+
+
+
+/**
+ * adapter_uninit - Shut down the chip and release any resources that
+ * we had allocated. Once this returns the adapter should not be used
+ * anymore.
+ *
+ * @acb: The adapter which we are to un-initialize.
+ **/
+static void adapter_uninit(struct AdapterCtlBlk *acb)
+{
+ unsigned long flags;
+ DC395x_LOCK_IO(acb->scsi_host, flags);
+
+ /* remove timers */
+ if (timer_pending(&acb->waiting_timer))
+ del_timer(&acb->waiting_timer);
+ if (timer_pending(&acb->selto_timer))
+ del_timer(&acb->selto_timer);
+
+ adapter_uninit_chip(acb);
+ adapter_remove_and_free_all_devices(acb);
+ DC395x_UNLOCK_IO(acb->scsi_host, flags);
+
+ if (acb->irq_level)
+ free_irq(acb->irq_level, acb);
+ if (acb->io_port_base)
+ release_region(acb->io_port_base, acb->io_port_len);
+
+ adapter_sg_tables_free(acb);
+}
+
+
+#undef YESNO
+#define YESNO(YN) \
+ if (YN) seq_printf(m, " Yes ");\
+ else seq_printf(m, " No ")
+
+static int dc395x_show_info(struct seq_file *m, struct Scsi_Host *host)
+{
+ struct AdapterCtlBlk *acb = (struct AdapterCtlBlk *)host->hostdata;
+ int spd, spd1;
+ struct DeviceCtlBlk *dcb;
+ unsigned long flags;
+ int dev;
+
+ seq_puts(m, DC395X_BANNER " PCI SCSI Host Adapter\n"
+ " Driver Version " DC395X_VERSION "\n");
+
+ DC395x_LOCK_IO(acb->scsi_host, flags);
+
+ seq_printf(m, "SCSI Host Nr %i, ", host->host_no);
+ seq_printf(m, "DC395U/UW/F DC315/U %s\n",
+ (acb->config & HCC_WIDE_CARD) ? "Wide" : "");
+ seq_printf(m, "io_port_base 0x%04lx, ", acb->io_port_base);
+ seq_printf(m, "irq_level 0x%04x, ", acb->irq_level);
+ seq_printf(m, " SelTimeout %ims\n", (1638 * acb->sel_timeout) / 1000);
+
+ seq_printf(m, "MaxID %i, MaxLUN %llu, ", host->max_id, host->max_lun);
+ seq_printf(m, "AdapterID %i\n", host->this_id);
+
+ seq_printf(m, "tag_max_num %i", acb->tag_max_num);
+ /*seq_printf(m, ", DMA_Status %i\n", DC395x_read8(acb, TRM_S1040_DMA_STATUS)); */
+ seq_printf(m, ", FilterCfg 0x%02x",
+ DC395x_read8(acb, TRM_S1040_SCSI_CONFIG1));
+ seq_printf(m, ", DelayReset %is\n", acb->eeprom.delay_time);
+ /*seq_printf(m, "\n"); */
+
+ seq_printf(m, "Nr of DCBs: %i\n", list_size(&acb->dcb_list));
+ seq_printf(m, "Map of attached LUNs: %02x %02x %02x %02x %02x %02x %02x %02x\n",
+ acb->dcb_map[0], acb->dcb_map[1], acb->dcb_map[2],
+ acb->dcb_map[3], acb->dcb_map[4], acb->dcb_map[5],
+ acb->dcb_map[6], acb->dcb_map[7]);
+ seq_printf(m, " %02x %02x %02x %02x %02x %02x %02x %02x\n",
+ acb->dcb_map[8], acb->dcb_map[9], acb->dcb_map[10],
+ acb->dcb_map[11], acb->dcb_map[12], acb->dcb_map[13],
+ acb->dcb_map[14], acb->dcb_map[15]);
+
+ seq_puts(m,
+ "Un ID LUN Prty Sync Wide DsCn SndS TagQ nego_period SyncFreq SyncOffs MaxCmd\n");
+
+ dev = 0;
+ list_for_each_entry(dcb, &acb->dcb_list, list) {
+ int nego_period;
+ seq_printf(m, "%02i %02i %02i ", dev, dcb->target_id,
+ dcb->target_lun);
+ YESNO(dcb->dev_mode & NTC_DO_PARITY_CHK);
+ YESNO(dcb->sync_offset);
+ YESNO(dcb->sync_period & WIDE_SYNC);
+ YESNO(dcb->dev_mode & NTC_DO_DISCONNECT);
+ YESNO(dcb->dev_mode & NTC_DO_SEND_START);
+ YESNO(dcb->sync_mode & EN_TAG_QUEUEING);
+ nego_period = clock_period[dcb->sync_period & 0x07] << 2;
+ if (dcb->sync_offset)
+ seq_printf(m, " %03i ns ", nego_period);
+ else
+ seq_printf(m, " (%03i ns)", (dcb->min_nego_period << 2));
+
+ if (dcb->sync_offset & 0x0f) {
+ spd = 1000 / (nego_period);
+ spd1 = 1000 % (nego_period);
+ spd1 = (spd1 * 10 + nego_period / 2) / (nego_period);
+ seq_printf(m, " %2i.%1i M %02i ", spd, spd1,
+ (dcb->sync_offset & 0x0f));
+ } else
+ seq_puts(m, " ");
+
+ /* Add more info ... */
+ seq_printf(m, " %02i\n", dcb->max_command);
+ dev++;
+ }
+
+ if (timer_pending(&acb->waiting_timer))
+ seq_puts(m, "Waiting queue timer running\n");
+ else
+ seq_putc(m, '\n');
+
+ list_for_each_entry(dcb, &acb->dcb_list, list) {
+ struct ScsiReqBlk *srb;
+ if (!list_empty(&dcb->srb_waiting_list))
+ seq_printf(m, "DCB (%02i-%i): Waiting: %i:",
+ dcb->target_id, dcb->target_lun,
+ list_size(&dcb->srb_waiting_list));
+ list_for_each_entry(srb, &dcb->srb_waiting_list, list)
+ seq_printf(m, " %p", srb->cmd);
+ if (!list_empty(&dcb->srb_going_list))
+ seq_printf(m, "\nDCB (%02i-%i): Going : %i:",
+ dcb->target_id, dcb->target_lun,
+ list_size(&dcb->srb_going_list));
+ list_for_each_entry(srb, &dcb->srb_going_list, list)
+ seq_printf(m, " %p", srb->cmd);
+ if (!list_empty(&dcb->srb_waiting_list) || !list_empty(&dcb->srb_going_list))
+ seq_putc(m, '\n');
+ }
+
+ if (debug_enabled(DBG_1)) {
+ seq_printf(m, "DCB list for ACB %p:\n", acb);
+ list_for_each_entry(dcb, &acb->dcb_list, list) {
+ seq_printf(m, "%p -> ", dcb);
+ }
+ seq_puts(m, "END\n");
+ }
+
+ DC395x_UNLOCK_IO(acb->scsi_host, flags);
+ return 0;
+}
+
+
+static struct scsi_host_template dc395x_driver_template = {
+ .module = THIS_MODULE,
+ .proc_name = DC395X_NAME,
+ .show_info = dc395x_show_info,
+ .name = DC395X_BANNER " " DC395X_VERSION,
+ .queuecommand = dc395x_queue_command,
+ .bios_param = dc395x_bios_param,
+ .slave_alloc = dc395x_slave_alloc,
+ .slave_destroy = dc395x_slave_destroy,
+ .can_queue = DC395x_MAX_CAN_QUEUE,
+ .this_id = 7,
+ .sg_tablesize = DC395x_MAX_SG_TABLESIZE,
+ .cmd_per_lun = DC395x_MAX_CMD_PER_LUN,
+ .eh_abort_handler = dc395x_eh_abort,
+ .eh_bus_reset_handler = dc395x_eh_bus_reset,
+ .use_clustering = DISABLE_CLUSTERING,
+};
+
+
+/**
+ * banner_display - Display banner on first instance of driver
+ * initialized.
+ **/
+static void banner_display(void)
+{
+ static int banner_done = 0;
+ if (!banner_done)
+ {
+ dprintkl(KERN_INFO, "%s %s\n", DC395X_BANNER, DC395X_VERSION);
+ banner_done = 1;
+ }
+}
+
+
+/**
+ * dc395x_init_one - Initialise a single instance of the adapter.
+ *
+ * The PCI layer will call this once for each instance of the adapter
+ * that it finds in the system. The pci_dev strcuture indicates which
+ * instance we are being called from.
+ *
+ * @dev: The PCI device to initialize.
+ * @id: Looks like a pointer to the entry in our pci device table
+ * that was actually matched by the PCI subsystem.
+ *
+ * Returns 0 on success, or an error code (-ve) on failure.
+ **/
+static int dc395x_init_one(struct pci_dev *dev, const struct pci_device_id *id)
+{
+ struct Scsi_Host *scsi_host = NULL;
+ struct AdapterCtlBlk *acb = NULL;
+ unsigned long io_port_base;
+ unsigned int io_port_len;
+ unsigned int irq;
+
+ dprintkdbg(DBG_0, "Init one instance (%s)\n", pci_name(dev));
+ banner_display();
+
+ if (pci_enable_device(dev))
+ {
+ dprintkl(KERN_INFO, "PCI Enable device failed.\n");
+ return -ENODEV;
+ }
+ io_port_base = pci_resource_start(dev, 0) & PCI_BASE_ADDRESS_IO_MASK;
+ io_port_len = pci_resource_len(dev, 0);
+ irq = dev->irq;
+ dprintkdbg(DBG_0, "IO_PORT=0x%04lx, IRQ=0x%x\n", io_port_base, dev->irq);
+
+ /* allocate scsi host information (includes out adapter) */
+ scsi_host = scsi_host_alloc(&dc395x_driver_template,
+ sizeof(struct AdapterCtlBlk));
+ if (!scsi_host) {
+ dprintkl(KERN_INFO, "scsi_host_alloc failed\n");
+ goto fail;
+ }
+ acb = (struct AdapterCtlBlk*)scsi_host->hostdata;
+ acb->scsi_host = scsi_host;
+ acb->dev = dev;
+
+ /* initialise the adapter and everything we need */
+ if (adapter_init(acb, io_port_base, io_port_len, irq)) {
+ dprintkl(KERN_INFO, "adapter init failed\n");
+ goto fail;
+ }
+
+ pci_set_master(dev);
+
+ /* get the scsi mid level to scan for new devices on the bus */
+ if (scsi_add_host(scsi_host, &dev->dev)) {
+ dprintkl(KERN_ERR, "scsi_add_host failed\n");
+ goto fail;
+ }
+ pci_set_drvdata(dev, scsi_host);
+ scsi_scan_host(scsi_host);
+
+ return 0;
+
+fail:
+ if (acb != NULL)
+ adapter_uninit(acb);
+ if (scsi_host != NULL)
+ scsi_host_put(scsi_host);
+ pci_disable_device(dev);
+ return -ENODEV;
+}
+
+
+/**
+ * dc395x_remove_one - Called to remove a single instance of the
+ * adapter.
+ *
+ * @dev: The PCI device to initialize.
+ **/
+static void dc395x_remove_one(struct pci_dev *dev)
+{
+ struct Scsi_Host *scsi_host = pci_get_drvdata(dev);
+ struct AdapterCtlBlk *acb = (struct AdapterCtlBlk *)(scsi_host->hostdata);
+
+ dprintkdbg(DBG_0, "dc395x_remove_one: acb=%p\n", acb);
+
+ scsi_remove_host(scsi_host);
+ adapter_uninit(acb);
+ pci_disable_device(dev);
+ scsi_host_put(scsi_host);
+}
+
+
+static struct pci_device_id dc395x_pci_table[] = {
+ {
+ .vendor = PCI_VENDOR_ID_TEKRAM,
+ .device = PCI_DEVICE_ID_TEKRAM_TRMS1040,
+ .subvendor = PCI_ANY_ID,
+ .subdevice = PCI_ANY_ID,
+ },
+ {} /* Terminating entry */
+};
+MODULE_DEVICE_TABLE(pci, dc395x_pci_table);
+
+
+static struct pci_driver dc395x_driver = {
+ .name = DC395X_NAME,
+ .id_table = dc395x_pci_table,
+ .probe = dc395x_init_one,
+ .remove = dc395x_remove_one,
+};
+
+
+/**
+ * dc395x_module_init - Module initialization function
+ *
+ * Used by both module and built-in driver to initialise this driver.
+ **/
+static int __init dc395x_module_init(void)
+{
+ return pci_register_driver(&dc395x_driver);
+}
+
+
+/**
+ * dc395x_module_exit - Module cleanup function.
+ **/
+static void __exit dc395x_module_exit(void)
+{
+ pci_unregister_driver(&dc395x_driver);
+}
+
+
+module_init(dc395x_module_init);
+module_exit(dc395x_module_exit);
+
+MODULE_AUTHOR("C.L. Huang / Erich Chen / Kurt Garloff");
+MODULE_DESCRIPTION("SCSI host adapter driver for Tekram TRM-S1040 based adapters: Tekram DC395 and DC315 series");
+MODULE_LICENSE("GPL");
Code Review / kvmfornfv.git / blobdiff