4 * Device Driver for Tekram DC395(U/UW/F), DC315(U)
5 * PCI SCSI Bus Master Host Adapter
6 * (SCSI chip set used Tekram ASIC TRM-S1040)
9 * C.L. Huang <ching@tekram.com.tw>
10 * Erich Chen <erich@tekram.com.tw>
11 * (C) Copyright 1995-1999 Tekram Technology Co., Ltd.
13 * Kurt Garloff <garloff@suse.de>
14 * (C) 1999-2000 Kurt Garloff
16 * Oliver Neukum <oliver@neukum.name>
17 * Ali Akcaagac <aliakc@web.de>
18 * Jamie Lenehan <lenehan@twibble.org>
23 *************************************************************************
25 * Redistribution and use in source and binary forms, with or without
26 * modification, are permitted provided that the following conditions
28 * 1. Redistributions of source code must retain the above copyright
29 * notice, this list of conditions and the following disclaimer.
30 * 2. Redistributions in binary form must reproduce the above copyright
31 * notice, this list of conditions and the following disclaimer in the
32 * documentation and/or other materials provided with the distribution.
33 * 3. The name of the author may not be used to endorse or promote products
34 * derived from this software without specific prior written permission.
36 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
37 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
38 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
39 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
40 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
41 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
42 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
43 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
44 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
45 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
47 ************************************************************************
49 #include <linux/module.h>
50 #include <linux/moduleparam.h>
51 #include <linux/delay.h>
52 #include <linux/ctype.h>
53 #include <linux/blkdev.h>
54 #include <linux/interrupt.h>
55 #include <linux/init.h>
56 #include <linux/spinlock.h>
57 #include <linux/pci.h>
58 #include <linux/list.h>
59 #include <linux/vmalloc.h>
62 #include <scsi/scsi.h>
63 #include <scsi/scsicam.h> /* needed for scsicam_bios_param */
64 #include <scsi/scsi_cmnd.h>
65 #include <scsi/scsi_device.h>
66 #include <scsi/scsi_host.h>
70 #define DC395X_NAME "dc395x"
71 #define DC395X_BANNER "Tekram DC395(U/UW/F), DC315(U) - ASIC TRM-S1040"
72 #define DC395X_VERSION "v2.05, 2004/03/08"
74 /*---------------------------------------------------------------------------
76 ---------------------------------------------------------------------------*/
78 * Set to disable parts of the driver
80 /*#define DC395x_NO_DISCONNECT*/
81 /*#define DC395x_NO_TAGQ*/
82 /*#define DC395x_NO_SYNC*/
83 /*#define DC395x_NO_WIDE*/
85 /*---------------------------------------------------------------------------
87 ---------------------------------------------------------------------------*/
89 * Types of debugging that can be enabled and disabled
95 #define DBG_FIFO 0x0040
96 #define DBG_PIO 0x0080
100 * Set set of things to output debugging for.
101 * Undefine to remove all debugging
103 /*#define DEBUG_MASK (DBG_0|DBG_1|DBG_SG|DBG_FIFO|DBG_PIO)*/
104 /*#define DEBUG_MASK DBG_0*/
108 * Output a kernel mesage at the specified level and append the
109 * driver name and a ": " to the start of the message
111 #define dprintkl(level, format, arg...) \
112 printk(level DC395X_NAME ": " format , ## arg)
117 * print a debug message - this is formated with KERN_DEBUG, then the
118 * driver name followed by a ": " and then the message is output.
119 * This also checks that the specified debug level is enabled before
120 * outputing the message
122 #define dprintkdbg(type, format, arg...) \
124 if ((type) & (DEBUG_MASK)) \
125 dprintkl(KERN_DEBUG , format , ## arg); \
129 * Check if the specified type of debugging is enabled
131 #define debug_enabled(type) ((DEBUG_MASK) & (type))
135 * No debugging. Do nothing
137 #define dprintkdbg(type, format, arg...) \
139 #define debug_enabled(type) (0)
144 #ifndef PCI_VENDOR_ID_TEKRAM
145 #define PCI_VENDOR_ID_TEKRAM 0x1DE1 /* Vendor ID */
147 #ifndef PCI_DEVICE_ID_TEKRAM_TRMS1040
148 #define PCI_DEVICE_ID_TEKRAM_TRMS1040 0x0391 /* Device ID */
152 #define DC395x_LOCK_IO(dev,flags) spin_lock_irqsave(((struct Scsi_Host *)dev)->host_lock, flags)
153 #define DC395x_UNLOCK_IO(dev,flags) spin_unlock_irqrestore(((struct Scsi_Host *)dev)->host_lock, flags)
155 #define DC395x_read8(acb,address) (u8)(inb(acb->io_port_base + (address)))
156 #define DC395x_read16(acb,address) (u16)(inw(acb->io_port_base + (address)))
157 #define DC395x_read32(acb,address) (u32)(inl(acb->io_port_base + (address)))
158 #define DC395x_write8(acb,address,value) outb((value), acb->io_port_base + (address))
159 #define DC395x_write16(acb,address,value) outw((value), acb->io_port_base + (address))
160 #define DC395x_write32(acb,address,value) outl((value), acb->io_port_base + (address))
163 #define RES_TARGET 0x000000FF /* Target State */
164 #define RES_TARGET_LNX STATUS_MASK /* Only official ... */
165 #define RES_ENDMSG 0x0000FF00 /* End Message */
166 #define RES_DID 0x00FF0000 /* DID_ codes */
167 #define RES_DRV 0xFF000000 /* DRIVER_ codes */
169 #define MK_RES(drv,did,msg,tgt) ((int)(drv)<<24 | (int)(did)<<16 | (int)(msg)<<8 | (int)(tgt))
170 #define MK_RES_LNX(drv,did,msg,tgt) ((int)(drv)<<24 | (int)(did)<<16 | (int)(msg)<<8 | (int)(tgt)<<1)
172 #define SET_RES_TARGET(who,tgt) { who &= ~RES_TARGET; who |= (int)(tgt); }
173 #define SET_RES_TARGET_LNX(who,tgt) { who &= ~RES_TARGET_LNX; who |= (int)(tgt) << 1; }
174 #define SET_RES_MSG(who,msg) { who &= ~RES_ENDMSG; who |= (int)(msg) << 8; }
175 #define SET_RES_DID(who,did) { who &= ~RES_DID; who |= (int)(did) << 16; }
176 #define SET_RES_DRV(who,drv) { who &= ~RES_DRV; who |= (int)(drv) << 24; }
181 * srb->segement_x is the hw sg list. It is always allocated as a
182 * DC395x_MAX_SG_LISTENTRY entries in a linear block which does not
183 * cross a page boundy.
185 #define SEGMENTX_LEN (sizeof(struct SGentry)*DC395x_MAX_SG_LISTENTRY)
189 u32 address
; /* bus! address */
193 /* The SEEPROM structure for TRM_S1040 */
195 u8 cfg0
; /* Target configuration byte 0 */
196 u8 period
; /* Target period */
197 u8 cfg2
; /* Target configuration byte 2 */
198 u8 cfg3
; /* Target configuration byte 3 */
202 u8 sub_vendor_id
[2]; /* 0,1 Sub Vendor ID */
203 u8 sub_sys_id
[2]; /* 2,3 Sub System ID */
204 u8 sub_class
; /* 4 Sub Class */
205 u8 vendor_id
[2]; /* 5,6 Vendor ID */
206 u8 device_id
[2]; /* 7,8 Device ID */
207 u8 reserved
; /* 9 Reserved */
208 struct NVRamTarget target
[DC395x_MAX_SCSI_ID
];
215 u8 scsi_id
; /* 74 Host Adapter SCSI ID */
216 u8 channel_cfg
; /* 75 Channel configuration */
217 u8 delay_time
; /* 76 Power on delay time */
218 u8 max_tag
; /* 77 Maximum tags */
219 u8 reserved0
; /* 78 */
220 u8 boot_target
; /* 79 */
221 u8 boot_lun
; /* 80 */
222 u8 reserved1
; /* 81 */
223 u16 reserved2
[22]; /* 82,..125 */
224 u16 cksum
; /* 126,127 */
228 struct list_head list
; /* next/prev ptrs for srb lists */
229 struct DeviceCtlBlk
*dcb
;
230 struct scsi_cmnd
*cmd
;
232 struct SGentry
*segment_x
; /* Linear array of hw sg entries (up to 64 entries) */
233 u32 sg_bus_addr
; /* Bus address of sg list (ie, of segment_x) */
235 u8 sg_count
; /* No of HW sg entries for this request */
236 u8 sg_index
; /* Index of HW sg entry for this request */
237 u32 total_xfer_length
; /* Total number of bytes remaining to be transfered */
238 unsigned char *virt_addr
; /* Virtual address of current transfer position */
241 * The sense buffer handling function, request_sense, uses
242 * the first hw sg entry (segment_x[0]) and the transfer
243 * length (total_xfer_length). While doing this it stores the
244 * original values into the last sg hw list
245 * (srb->segment_x[DC395x_MAX_SG_LISTENTRY - 1] and the
246 * total_xfer_length in xferred. These values are restored in
247 * pci_unmap_srb_sense. This is the only place xferred is used.
249 u32 xferred
; /* Saved copy of total_xfer_length */
269 struct DeviceCtlBlk
{
270 struct list_head list
; /* next/prev ptrs for the dcb list */
271 struct AdapterCtlBlk
*acb
;
272 struct list_head srb_going_list
; /* head of going srb list */
273 struct list_head srb_waiting_list
; /* head of waiting srb list */
275 struct ScsiReqBlk
*active_srb
;
280 u8 target_id
; /* SCSI Target ID (SCSI Only) */
281 u8 target_lun
; /* SCSI Log. Unit (SCSI Only) */
285 u8 inquiry7
; /* To store Inquiry flags */
286 u8 sync_mode
; /* 0:async mode */
287 u8 min_nego_period
; /* for nego. */
288 u8 sync_period
; /* for reg. */
290 u8 sync_offset
; /* for reg. and nego.(low nibble) */
296 struct AdapterCtlBlk
{
297 struct Scsi_Host
*scsi_host
;
299 unsigned long io_port_base
;
300 unsigned long io_port_len
;
302 struct list_head dcb_list
; /* head of going dcb list */
303 struct DeviceCtlBlk
*dcb_run_robin
;
304 struct DeviceCtlBlk
*active_dcb
;
306 struct list_head srb_free_list
; /* head of free srb list */
307 struct ScsiReqBlk
*tmp_srb
;
308 struct timer_list waiting_timer
;
309 struct timer_list selto_timer
;
315 unsigned int irq_level
;
325 u8 dcb_map
[DC395x_MAX_SCSI_ID
];
326 struct DeviceCtlBlk
*children
[DC395x_MAX_SCSI_ID
][32];
332 struct ScsiReqBlk srb_array
[DC395x_MAX_SRB_CNT
];
333 struct ScsiReqBlk srb
;
335 struct NvRamType eeprom
; /* eeprom settings for this adapter */
339 /*---------------------------------------------------------------------------
341 ---------------------------------------------------------------------------*/
342 static void data_out_phase0(struct AdapterCtlBlk
*acb
, struct ScsiReqBlk
*srb
,
344 static void data_in_phase0(struct AdapterCtlBlk
*acb
, struct ScsiReqBlk
*srb
,
346 static void command_phase0(struct AdapterCtlBlk
*acb
, struct ScsiReqBlk
*srb
,
348 static void status_phase0(struct AdapterCtlBlk
*acb
, struct ScsiReqBlk
*srb
,
350 static void msgout_phase0(struct AdapterCtlBlk
*acb
, struct ScsiReqBlk
*srb
,
352 static void msgin_phase0(struct AdapterCtlBlk
*acb
, struct ScsiReqBlk
*srb
,
354 static void data_out_phase1(struct AdapterCtlBlk
*acb
, struct ScsiReqBlk
*srb
,
356 static void data_in_phase1(struct AdapterCtlBlk
*acb
, struct ScsiReqBlk
*srb
,
358 static void command_phase1(struct AdapterCtlBlk
*acb
, struct ScsiReqBlk
*srb
,
360 static void status_phase1(struct AdapterCtlBlk
*acb
, struct ScsiReqBlk
*srb
,
362 static void msgout_phase1(struct AdapterCtlBlk
*acb
, struct ScsiReqBlk
*srb
,
364 static void msgin_phase1(struct AdapterCtlBlk
*acb
, struct ScsiReqBlk
*srb
,
366 static void nop0(struct AdapterCtlBlk
*acb
, struct ScsiReqBlk
*srb
,
368 static void nop1(struct AdapterCtlBlk
*acb
, struct ScsiReqBlk
*srb
,
370 static void set_basic_config(struct AdapterCtlBlk
*acb
);
371 static void cleanup_after_transfer(struct AdapterCtlBlk
*acb
,
372 struct ScsiReqBlk
*srb
);
373 static void reset_scsi_bus(struct AdapterCtlBlk
*acb
);
374 static void data_io_transfer(struct AdapterCtlBlk
*acb
,
375 struct ScsiReqBlk
*srb
, u16 io_dir
);
376 static void disconnect(struct AdapterCtlBlk
*acb
);
377 static void reselect(struct AdapterCtlBlk
*acb
);
378 static u8
start_scsi(struct AdapterCtlBlk
*acb
, struct DeviceCtlBlk
*dcb
,
379 struct ScsiReqBlk
*srb
);
380 static inline void enable_msgout_abort(struct AdapterCtlBlk
*acb
,
381 struct ScsiReqBlk
*srb
);
382 static void build_srb(struct scsi_cmnd
*cmd
, struct DeviceCtlBlk
*dcb
,
383 struct ScsiReqBlk
*srb
);
384 static void doing_srb_done(struct AdapterCtlBlk
*acb
, u8 did_code
,
385 struct scsi_cmnd
*cmd
, u8 force
);
386 static void scsi_reset_detect(struct AdapterCtlBlk
*acb
);
387 static void pci_unmap_srb(struct AdapterCtlBlk
*acb
, struct ScsiReqBlk
*srb
);
388 static void pci_unmap_srb_sense(struct AdapterCtlBlk
*acb
,
389 struct ScsiReqBlk
*srb
);
390 static void srb_done(struct AdapterCtlBlk
*acb
, struct DeviceCtlBlk
*dcb
,
391 struct ScsiReqBlk
*srb
);
392 static void request_sense(struct AdapterCtlBlk
*acb
, struct DeviceCtlBlk
*dcb
,
393 struct ScsiReqBlk
*srb
);
394 static void set_xfer_rate(struct AdapterCtlBlk
*acb
,
395 struct DeviceCtlBlk
*dcb
);
396 static void waiting_timeout(unsigned long ptr
);
399 /*---------------------------------------------------------------------------
401 ---------------------------------------------------------------------------*/
402 static u16 current_sync_offset
= 0;
404 static void *dc395x_scsi_phase0
[] = {
405 data_out_phase0
,/* phase:0 */
406 data_in_phase0
, /* phase:1 */
407 command_phase0
, /* phase:2 */
408 status_phase0
, /* phase:3 */
409 nop0
, /* phase:4 PH_BUS_FREE .. initial phase */
410 nop0
, /* phase:5 PH_BUS_FREE .. initial phase */
411 msgout_phase0
, /* phase:6 */
412 msgin_phase0
, /* phase:7 */
415 static void *dc395x_scsi_phase1
[] = {
416 data_out_phase1
,/* phase:0 */
417 data_in_phase1
, /* phase:1 */
418 command_phase1
, /* phase:2 */
419 status_phase1
, /* phase:3 */
420 nop1
, /* phase:4 PH_BUS_FREE .. initial phase */
421 nop1
, /* phase:5 PH_BUS_FREE .. initial phase */
422 msgout_phase1
, /* phase:6 */
423 msgin_phase1
, /* phase:7 */
427 *Fast20: 000 50ns, 20.0 MHz
429 * 010 100ns, 10.0 MHz
436 *Fast40(LVDS): 000 25ns, 40.0 MHz
439 * 011 100ns, 10.0 MHz
445 /*static u8 clock_period[] = {12,19,25,31,37,44,50,62};*/
447 /* real period:48ns,76ns,100ns,124ns,148ns,176ns,200ns,248ns */
448 static u8 clock_period
[] = { 12, 18, 25, 31, 37, 43, 50, 62 };
449 static u16 clock_speed
[] = { 200, 133, 100, 80, 67, 58, 50, 40 };
452 /*---------------------------------------------------------------------------
454 ---------------------------------------------------------------------------*/
456 * Module/boot parameters currently effect *all* instances of the
457 * card in the system.
461 * Command line parameters are stored in a structure below.
462 * These are the index's into the structure for the various
463 * command line options.
465 #define CFG_ADAPTER_ID 0
466 #define CFG_MAX_SPEED 1
467 #define CFG_DEV_MODE 2
468 #define CFG_ADAPTER_MODE 3
470 #define CFG_RESET_DELAY 5
472 #define CFG_NUM 6 /* number of configuration items */
476 * Value used to indicate that a command line override
477 * hasn't been used to modify the value.
479 #define CFG_PARAM_UNSET -1
483 * Hold command line parameters.
485 struct ParameterData
{
486 int value
; /* value of this setting */
487 int min
; /* minimum value */
488 int max
; /* maximum value */
489 int def
; /* default value */
490 int safe
; /* safe value */
492 static struct ParameterData __devinitdata cfg_data
[] = {
511 NTC_DO_PARITY_CHK
| NTC_DO_DISCONNECT
| NTC_DO_SYNC_NEGO
|
512 NTC_DO_WIDE_NEGO
| NTC_DO_TAG_QUEUEING
|
514 NTC_DO_PARITY_CHK
| NTC_DO_SEND_START
520 #ifdef CONFIG_SCSI_MULTI_LUN
523 NAC_GT2DRIVES
| NAC_GREATER_1G
| NAC_POWERON_SCSI_RESET
524 /*| NAC_ACTIVE_NEG*/,
525 NAC_GT2DRIVES
| NAC_GREATER_1G
| NAC_POWERON_SCSI_RESET
| 0x08
531 3, /* 16 tags (??) */
545 * Safe settings. If set to zero the the BIOS/default values with
546 * command line overrides will be used. If set to 1 then safe and
547 * slow settings will be used.
549 static int use_safe_settings
= 0;
550 module_param_named(safe
, use_safe_settings
, bool, 0);
551 MODULE_PARM_DESC(safe
, "Use safe and slow settings only. Default: false");
554 module_param_named(adapter_id
, cfg_data
[CFG_ADAPTER_ID
].value
, int, 0);
555 MODULE_PARM_DESC(adapter_id
, "Adapter SCSI ID. Default 7 (0-15)");
557 module_param_named(max_speed
, cfg_data
[CFG_MAX_SPEED
].value
, int, 0);
558 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");
560 module_param_named(dev_mode
, cfg_data
[CFG_DEV_MODE
].value
, int, 0);
561 MODULE_PARM_DESC(dev_mode
, "Device mode.");
563 module_param_named(adapter_mode
, cfg_data
[CFG_ADAPTER_MODE
].value
, int, 0);
564 MODULE_PARM_DESC(adapter_mode
, "Adapter mode.");
566 module_param_named(tags
, cfg_data
[CFG_TAGS
].value
, int, 0);
567 MODULE_PARM_DESC(tags
, "Number of tags (1<<x). Default 3 (0-5)");
569 module_param_named(reset_delay
, cfg_data
[CFG_RESET_DELAY
].value
, int, 0);
570 MODULE_PARM_DESC(reset_delay
, "Reset delay in seconds. Default 1 (0-180)");
574 * set_safe_settings - if the use_safe_settings option is set then
575 * set all values to the safe and slow values.
577 static void __devinit
set_safe_settings(void)
579 if (use_safe_settings
)
583 dprintkl(KERN_INFO
, "Using safe settings.\n");
584 for (i
= 0; i
< CFG_NUM
; i
++)
586 cfg_data
[i
].value
= cfg_data
[i
].safe
;
593 * fix_settings - reset any boot parameters which are out of range
594 * back to the default values.
596 static void __devinit
fix_settings(void)
601 "setup: AdapterId=%08x MaxSpeed=%08x DevMode=%08x "
602 "AdapterMode=%08x Tags=%08x ResetDelay=%08x\n",
603 cfg_data
[CFG_ADAPTER_ID
].value
,
604 cfg_data
[CFG_MAX_SPEED
].value
,
605 cfg_data
[CFG_DEV_MODE
].value
,
606 cfg_data
[CFG_ADAPTER_MODE
].value
,
607 cfg_data
[CFG_TAGS
].value
,
608 cfg_data
[CFG_RESET_DELAY
].value
);
609 for (i
= 0; i
< CFG_NUM
; i
++)
611 if (cfg_data
[i
].value
< cfg_data
[i
].min
612 || cfg_data
[i
].value
> cfg_data
[i
].max
)
613 cfg_data
[i
].value
= cfg_data
[i
].def
;
620 * Mapping from the eeprom delay index value (index into this array)
621 * to the the number of actual seconds that the delay should be for.
623 static char __devinitdata eeprom_index_to_delay_map
[] =
624 { 1, 3, 5, 10, 16, 30, 60, 120 };
628 * eeprom_index_to_delay - Take the eeprom delay setting and convert it
629 * into a number of seconds.
631 * @eeprom: The eeprom structure in which we find the delay index to map.
633 static void __devinit
eeprom_index_to_delay(struct NvRamType
*eeprom
)
635 eeprom
->delay_time
= eeprom_index_to_delay_map
[eeprom
->delay_time
];
640 * delay_to_eeprom_index - Take a delay in seconds and return the
641 * closest eeprom index which will delay for at least that amount of
644 * @delay: The delay, in seconds, to find the eeprom index for.
646 static int __devinit
delay_to_eeprom_index(int delay
)
649 while (idx
< 7 && eeprom_index_to_delay_map
[idx
] < delay
)
656 * eeprom_override - Override the eeprom settings, in the provided
657 * eeprom structure, with values that have been set on the command
660 * @eeprom: The eeprom data to override with command line options.
662 static void __devinit
eeprom_override(struct NvRamType
*eeprom
)
666 /* Adapter Settings */
667 if (cfg_data
[CFG_ADAPTER_ID
].value
!= CFG_PARAM_UNSET
)
668 eeprom
->scsi_id
= (u8
)cfg_data
[CFG_ADAPTER_ID
].value
;
670 if (cfg_data
[CFG_ADAPTER_MODE
].value
!= CFG_PARAM_UNSET
)
671 eeprom
->channel_cfg
= (u8
)cfg_data
[CFG_ADAPTER_MODE
].value
;
673 if (cfg_data
[CFG_RESET_DELAY
].value
!= CFG_PARAM_UNSET
)
674 eeprom
->delay_time
= delay_to_eeprom_index(
675 cfg_data
[CFG_RESET_DELAY
].value
);
677 if (cfg_data
[CFG_TAGS
].value
!= CFG_PARAM_UNSET
)
678 eeprom
->max_tag
= (u8
)cfg_data
[CFG_TAGS
].value
;
680 /* Device Settings */
681 for (id
= 0; id
< DC395x_MAX_SCSI_ID
; id
++) {
682 if (cfg_data
[CFG_DEV_MODE
].value
!= CFG_PARAM_UNSET
)
683 eeprom
->target
[id
].cfg0
=
684 (u8
)cfg_data
[CFG_DEV_MODE
].value
;
686 if (cfg_data
[CFG_MAX_SPEED
].value
!= CFG_PARAM_UNSET
)
687 eeprom
->target
[id
].period
=
688 (u8
)cfg_data
[CFG_MAX_SPEED
].value
;
694 /*---------------------------------------------------------------------------
695 ---------------------------------------------------------------------------*/
697 static unsigned int list_size(struct list_head
*head
)
699 unsigned int count
= 0;
700 struct list_head
*pos
;
701 list_for_each(pos
, head
)
707 static struct DeviceCtlBlk
*dcb_get_next(struct list_head
*head
,
708 struct DeviceCtlBlk
*pos
)
711 struct DeviceCtlBlk
* next
= NULL
;
712 struct DeviceCtlBlk
* i
;
714 if (list_empty(head
))
717 /* find supplied dcb and then select the next one */
718 list_for_each_entry(i
, head
, list
)
722 } else if (i
== pos
) {
725 /* if no next one take the head one (ie, wraparound) */
727 list_for_each_entry(i
, head
, list
) {
736 static void free_tag(struct DeviceCtlBlk
*dcb
, struct ScsiReqBlk
*srb
)
738 if (srb
->tag_number
< 255) {
739 dcb
->tag_mask
&= ~(1 << srb
->tag_number
); /* free tag mask */
740 srb
->tag_number
= 255;
745 /* Find cmd in SRB list */
746 static inline struct ScsiReqBlk
*find_cmd(struct scsi_cmnd
*cmd
,
747 struct list_head
*head
)
749 struct ScsiReqBlk
*i
;
750 list_for_each_entry(i
, head
, list
)
757 static struct ScsiReqBlk
*srb_get_free(struct AdapterCtlBlk
*acb
)
759 struct list_head
*head
= &acb
->srb_free_list
;
760 struct ScsiReqBlk
*srb
= NULL
;
762 if (!list_empty(head
)) {
763 srb
= list_entry(head
->next
, struct ScsiReqBlk
, list
);
764 list_del(head
->next
);
765 dprintkdbg(DBG_0
, "srb_get_free: srb=%p\n", srb
);
771 static void srb_free_insert(struct AdapterCtlBlk
*acb
, struct ScsiReqBlk
*srb
)
773 dprintkdbg(DBG_0
, "srb_free_insert: srb=%p\n", srb
);
774 list_add_tail(&srb
->list
, &acb
->srb_free_list
);
778 static void srb_waiting_insert(struct DeviceCtlBlk
*dcb
,
779 struct ScsiReqBlk
*srb
)
781 dprintkdbg(DBG_0
, "srb_waiting_insert: (pid#%li) <%02i-%i> srb=%p\n",
782 srb
->cmd
->pid
, dcb
->target_id
, dcb
->target_lun
, srb
);
783 list_add(&srb
->list
, &dcb
->srb_waiting_list
);
787 static void srb_waiting_append(struct DeviceCtlBlk
*dcb
,
788 struct ScsiReqBlk
*srb
)
790 dprintkdbg(DBG_0
, "srb_waiting_append: (pid#%li) <%02i-%i> srb=%p\n",
791 srb
->cmd
->pid
, dcb
->target_id
, dcb
->target_lun
, srb
);
792 list_add_tail(&srb
->list
, &dcb
->srb_waiting_list
);
796 static void srb_going_append(struct DeviceCtlBlk
*dcb
, struct ScsiReqBlk
*srb
)
798 dprintkdbg(DBG_0
, "srb_going_append: (pid#%li) <%02i-%i> srb=%p\n",
799 srb
->cmd
->pid
, dcb
->target_id
, dcb
->target_lun
, srb
);
800 list_add_tail(&srb
->list
, &dcb
->srb_going_list
);
804 static void srb_going_remove(struct DeviceCtlBlk
*dcb
, struct ScsiReqBlk
*srb
)
806 struct ScsiReqBlk
*i
;
807 struct ScsiReqBlk
*tmp
;
808 dprintkdbg(DBG_0
, "srb_going_remove: (pid#%li) <%02i-%i> srb=%p\n",
809 srb
->cmd
->pid
, dcb
->target_id
, dcb
->target_lun
, srb
);
811 list_for_each_entry_safe(i
, tmp
, &dcb
->srb_going_list
, list
)
813 list_del(&srb
->list
);
819 static void srb_waiting_remove(struct DeviceCtlBlk
*dcb
,
820 struct ScsiReqBlk
*srb
)
822 struct ScsiReqBlk
*i
;
823 struct ScsiReqBlk
*tmp
;
824 dprintkdbg(DBG_0
, "srb_waiting_remove: (pid#%li) <%02i-%i> srb=%p\n",
825 srb
->cmd
->pid
, dcb
->target_id
, dcb
->target_lun
, srb
);
827 list_for_each_entry_safe(i
, tmp
, &dcb
->srb_waiting_list
, list
)
829 list_del(&srb
->list
);
835 static void srb_going_to_waiting_move(struct DeviceCtlBlk
*dcb
,
836 struct ScsiReqBlk
*srb
)
839 "srb_going_to_waiting_move: (pid#%li) <%02i-%i> srb=%p\n",
840 srb
->cmd
->pid
, dcb
->target_id
, dcb
->target_lun
, srb
);
841 list_move(&srb
->list
, &dcb
->srb_waiting_list
);
845 static void srb_waiting_to_going_move(struct DeviceCtlBlk
*dcb
,
846 struct ScsiReqBlk
*srb
)
849 "srb_waiting_to_going_move: (pid#%li) <%02i-%i> srb=%p\n",
850 srb
->cmd
->pid
, dcb
->target_id
, dcb
->target_lun
, srb
);
851 list_move(&srb
->list
, &dcb
->srb_going_list
);
855 /* Sets the timer to wake us up */
856 static void waiting_set_timer(struct AdapterCtlBlk
*acb
, unsigned long to
)
858 if (timer_pending(&acb
->waiting_timer
))
860 init_timer(&acb
->waiting_timer
);
861 acb
->waiting_timer
.function
= waiting_timeout
;
862 acb
->waiting_timer
.data
= (unsigned long) acb
;
863 if (time_before(jiffies
+ to
, acb
->scsi_host
->last_reset
- HZ
/ 2))
864 acb
->waiting_timer
.expires
=
865 acb
->scsi_host
->last_reset
- HZ
/ 2 + 1;
867 acb
->waiting_timer
.expires
= jiffies
+ to
+ 1;
868 add_timer(&acb
->waiting_timer
);
872 /* Send the next command from the waiting list to the bus */
873 static void waiting_process_next(struct AdapterCtlBlk
*acb
)
875 struct DeviceCtlBlk
*start
= NULL
;
876 struct DeviceCtlBlk
*pos
;
877 struct DeviceCtlBlk
*dcb
;
878 struct ScsiReqBlk
*srb
;
879 struct list_head
*dcb_list_head
= &acb
->dcb_list
;
882 || (acb
->acb_flag
& (RESET_DETECT
+ RESET_DONE
+ RESET_DEV
)))
885 if (timer_pending(&acb
->waiting_timer
))
886 del_timer(&acb
->waiting_timer
);
888 if (list_empty(dcb_list_head
))
892 * Find the starting dcb. Need to find it again in the list
893 * since the list may have changed since we set the ptr to it
895 list_for_each_entry(dcb
, dcb_list_head
, list
)
896 if (dcb
== acb
->dcb_run_robin
) {
901 /* This can happen! */
902 start
= list_entry(dcb_list_head
->next
, typeof(*start
), list
);
903 acb
->dcb_run_robin
= start
;
908 * Loop over the dcb, but we start somewhere (potentially) in
909 * the middle of the loop so we need to manully do this.
913 struct list_head
*waiting_list_head
= &pos
->srb_waiting_list
;
915 /* Make sure, the next another device gets scheduled ... */
916 acb
->dcb_run_robin
= dcb_get_next(dcb_list_head
,
919 if (list_empty(waiting_list_head
) ||
920 pos
->max_command
<= list_size(&pos
->srb_going_list
)) {
921 /* move to next dcb */
922 pos
= dcb_get_next(dcb_list_head
, pos
);
924 srb
= list_entry(waiting_list_head
->next
,
925 struct ScsiReqBlk
, list
);
927 /* Try to send to the bus */
928 if (!start_scsi(acb
, pos
, srb
))
929 srb_waiting_to_going_move(pos
, srb
);
931 waiting_set_timer(acb
, HZ
/50);
934 } while (pos
!= start
);
938 /* Wake up waiting queue */
939 static void waiting_timeout(unsigned long ptr
)
942 struct AdapterCtlBlk
*acb
= (struct AdapterCtlBlk
*)ptr
;
944 "waiting_timeout: Queue woken up by timer. acb=%p\n", acb
);
945 DC395x_LOCK_IO(acb
->scsi_host
, flags
);
946 waiting_process_next(acb
);
947 DC395x_UNLOCK_IO(acb
->scsi_host
, flags
);
951 /* Get the DCB for a given ID/LUN combination */
952 static struct DeviceCtlBlk
*find_dcb(struct AdapterCtlBlk
*acb
, u8 id
, u8 lun
)
954 return acb
->children
[id
][lun
];
958 /* Send SCSI Request Block (srb) to adapter (acb) */
959 static void send_srb(struct AdapterCtlBlk
*acb
, struct ScsiReqBlk
*srb
)
961 struct DeviceCtlBlk
*dcb
= srb
->dcb
;
963 if (dcb
->max_command
<= list_size(&dcb
->srb_going_list
) ||
965 (acb
->acb_flag
& (RESET_DETECT
+ RESET_DONE
+ RESET_DEV
))) {
966 srb_waiting_append(dcb
, srb
);
967 waiting_process_next(acb
);
971 if (!start_scsi(acb
, dcb
, srb
))
972 srb_going_append(dcb
, srb
);
974 srb_waiting_insert(dcb
, srb
);
975 waiting_set_timer(acb
, HZ
/ 50);
979 static inline void pio_trigger(void)
981 static int feedback_requested
;
983 if (!feedback_requested
) {
984 feedback_requested
= 1;
985 printk(KERN_WARNING
"%s: Please, contact <linux-scsi@vger.kernel.org> "
986 "to help improve support for your system.\n", __FILE__
);
990 /* Prepare SRB for being sent to Device DCB w/ command *cmd */
991 static void build_srb(struct scsi_cmnd
*cmd
, struct DeviceCtlBlk
*dcb
,
992 struct ScsiReqBlk
*srb
)
994 enum dma_data_direction dir
= cmd
->sc_data_direction
;
995 dprintkdbg(DBG_0
, "build_srb: (pid#%li) <%02i-%i>\n",
996 cmd
->pid
, dcb
->target_id
, dcb
->target_lun
);
1001 srb
->total_xfer_length
= 0;
1002 srb
->sg_bus_addr
= 0;
1003 srb
->virt_addr
= NULL
;
1005 srb
->adapter_status
= 0;
1006 srb
->target_status
= 0;
1011 srb
->retry_count
= 0;
1012 srb
->tag_number
= TAG_NONE
;
1013 srb
->scsi_phase
= PH_BUS_FREE
; /* initial phase */
1014 srb
->end_message
= 0;
1016 if (dir
== PCI_DMA_NONE
|| !cmd
->request_buffer
) {
1018 "build_srb: [0] len=%d buf=%p use_sg=%d !MAP=%08x\n",
1019 cmd
->bufflen
, cmd
->request_buffer
,
1020 cmd
->use_sg
, srb
->segment_x
[0].address
);
1021 } else if (cmd
->use_sg
) {
1023 u32 reqlen
= cmd
->request_bufflen
;
1024 struct scatterlist
*sl
= (struct scatterlist
*)
1025 cmd
->request_buffer
;
1026 struct SGentry
*sgp
= srb
->segment_x
;
1027 srb
->sg_count
= pci_map_sg(dcb
->acb
->dev
, sl
, cmd
->use_sg
,
1030 "build_srb: [n] len=%d buf=%p use_sg=%d segs=%d\n",
1031 reqlen
, cmd
->request_buffer
, cmd
->use_sg
,
1034 srb
->virt_addr
= page_address(sl
->page
);
1035 for (i
= 0; i
< srb
->sg_count
; i
++) {
1036 u32 busaddr
= (u32
)sg_dma_address(&sl
[i
]);
1037 u32 seglen
= (u32
)sl
[i
].length
;
1038 sgp
[i
].address
= busaddr
;
1039 sgp
[i
].length
= seglen
;
1040 srb
->total_xfer_length
+= seglen
;
1042 sgp
+= srb
->sg_count
- 1;
1045 * adjust last page if too big as it is allocated
1046 * on even page boundaries
1048 if (srb
->total_xfer_length
> reqlen
) {
1049 sgp
->length
-= (srb
->total_xfer_length
- reqlen
);
1050 srb
->total_xfer_length
= reqlen
;
1053 /* Fixup for WIDE padding - make sure length is even */
1054 if (dcb
->sync_period
& WIDE_SYNC
&&
1055 srb
->total_xfer_length
% 2) {
1056 srb
->total_xfer_length
++;
1060 srb
->sg_bus_addr
= pci_map_single(dcb
->acb
->dev
,
1065 dprintkdbg(DBG_SG
, "build_srb: [n] map sg %p->%08x(%05x)\n",
1066 srb
->segment_x
, srb
->sg_bus_addr
, SEGMENTX_LEN
);
1068 srb
->total_xfer_length
= cmd
->request_bufflen
;
1070 srb
->segment_x
[0].address
=
1071 pci_map_single(dcb
->acb
->dev
, cmd
->request_buffer
,
1072 srb
->total_xfer_length
, dir
);
1074 /* Fixup for WIDE padding - make sure length is even */
1075 if (dcb
->sync_period
& WIDE_SYNC
&& srb
->total_xfer_length
% 2)
1076 srb
->total_xfer_length
++;
1078 srb
->segment_x
[0].length
= srb
->total_xfer_length
;
1079 srb
->virt_addr
= cmd
->request_buffer
;
1081 "build_srb: [1] len=%d buf=%p use_sg=%d map=%08x\n",
1082 srb
->total_xfer_length
, cmd
->request_buffer
,
1083 cmd
->use_sg
, srb
->segment_x
[0].address
);
1089 * dc395x_queue_command - queue scsi command passed from the mid
1090 * layer, invoke 'done' on completion
1092 * @cmd: pointer to scsi command object
1093 * @done: function pointer to be invoked on completion
1095 * Returns 1 if the adapter (host) is busy, else returns 0. One
1096 * reason for an adapter to be busy is that the number
1097 * of outstanding queued commands is already equal to
1098 * struct Scsi_Host::can_queue .
1100 * Required: if struct Scsi_Host::can_queue is ever non-zero
1101 * then this function is required.
1103 * Locks: struct Scsi_Host::host_lock held on entry (with "irqsave")
1104 * and is expected to be held on return.
1107 static int dc395x_queue_command(struct scsi_cmnd
*cmd
, void (*done
)(struct scsi_cmnd
*))
1109 struct DeviceCtlBlk
*dcb
;
1110 struct ScsiReqBlk
*srb
;
1111 struct AdapterCtlBlk
*acb
=
1112 (struct AdapterCtlBlk
*)cmd
->device
->host
->hostdata
;
1113 dprintkdbg(DBG_0
, "queue_command: (pid#%li) <%02i-%i> cmnd=0x%02x\n",
1114 cmd
->pid
, cmd
->device
->id
, cmd
->device
->lun
, cmd
->cmnd
[0]);
1116 /* Assume BAD_TARGET; will be cleared later */
1117 cmd
->result
= DID_BAD_TARGET
<< 16;
1119 /* ignore invalid targets */
1120 if (cmd
->device
->id
>= acb
->scsi_host
->max_id
||
1121 cmd
->device
->lun
>= acb
->scsi_host
->max_lun
||
1122 cmd
->device
->lun
>31) {
1126 /* does the specified lun on the specified device exist */
1127 if (!(acb
->dcb_map
[cmd
->device
->id
] & (1 << cmd
->device
->lun
))) {
1128 dprintkl(KERN_INFO
, "queue_command: Ignore target <%02i-%i>\n",
1129 cmd
->device
->id
, cmd
->device
->lun
);
1133 /* do we have a DCB for the device */
1134 dcb
= find_dcb(acb
, cmd
->device
->id
, cmd
->device
->lun
);
1136 /* should never happen */
1137 dprintkl(KERN_ERR
, "queue_command: No such device <%02i-%i>",
1138 cmd
->device
->id
, cmd
->device
->lun
);
1142 /* set callback and clear result in the command */
1143 cmd
->scsi_done
= done
;
1146 srb
= srb_get_free(acb
);
1150 * Return 1 since we are unable to queue this command at this
1153 dprintkdbg(DBG_0
, "queue_command: No free srb's\n");
1157 build_srb(cmd
, dcb
, srb
);
1159 if (!list_empty(&dcb
->srb_waiting_list
)) {
1160 /* append to waiting queue */
1161 srb_waiting_append(dcb
, srb
);
1162 waiting_process_next(acb
);
1164 /* process immediately */
1167 dprintkdbg(DBG_1
, "queue_command: (pid#%li) done\n", cmd
->pid
);
1172 * Complete the command immediatey, and then return 0 to
1173 * indicate that we have handled the command. This is usually
1174 * done when the commad is for things like non existent
1183 * Return the disk geometry for the given SCSI device.
1185 static int dc395x_bios_param(struct scsi_device
*sdev
,
1186 struct block_device
*bdev
, sector_t capacity
, int *info
)
1188 #ifdef CONFIG_SCSI_DC395x_TRMS1040_TRADMAP
1189 int heads
, sectors
, cylinders
;
1190 struct AdapterCtlBlk
*acb
;
1191 int size
= capacity
;
1193 dprintkdbg(DBG_0
, "dc395x_bios_param..............\n");
1194 acb
= (struct AdapterCtlBlk
*)sdev
->host
->hostdata
;
1197 cylinders
= size
/ (heads
* sectors
);
1199 if ((acb
->gmode2
& NAC_GREATER_1G
) && (cylinders
> 1024)) {
1202 cylinders
= size
/ (heads
* sectors
);
1206 geom
[2] = cylinders
;
1209 return scsicam_bios_param(bdev
, capacity
, info
);
1214 static void dump_register_info(struct AdapterCtlBlk
*acb
,
1215 struct DeviceCtlBlk
*dcb
, struct ScsiReqBlk
*srb
)
1218 struct pci_dev
*dev
= acb
->dev
;
1219 pci_read_config_word(dev
, PCI_STATUS
, &pstat
);
1221 dcb
= acb
->active_dcb
;
1223 srb
= dcb
->active_srb
;
1226 dprintkl(KERN_INFO
, "dump: srb=%p cmd=%p OOOPS!\n",
1229 dprintkl(KERN_INFO
, "dump: srb=%p cmd=%p (pid#%li) "
1230 "cmnd=0x%02x <%02i-%i>\n",
1231 srb
, srb
->cmd
, srb
->cmd
->pid
,
1232 srb
->cmd
->cmnd
[0], srb
->cmd
->device
->id
,
1233 srb
->cmd
->device
->lun
);
1234 printk(" sglist=%p cnt=%i idx=%i len=%i\n",
1235 srb
->segment_x
, srb
->sg_count
, srb
->sg_index
,
1236 srb
->total_xfer_length
);
1237 printk(" state=0x%04x status=0x%02x phase=0x%02x (%sconn.)\n",
1238 srb
->state
, srb
->status
, srb
->scsi_phase
,
1239 (acb
->active_dcb
) ? "" : "not");
1241 dprintkl(KERN_INFO
, "dump: SCSI{status=0x%04x fifocnt=0x%02x "
1242 "signals=0x%02x irqstat=0x%02x sync=0x%02x target=0x%02x "
1243 "rselid=0x%02x ctr=0x%08x irqen=0x%02x config=0x%04x "
1244 "config2=0x%02x cmd=0x%02x selto=0x%02x}\n",
1245 DC395x_read16(acb
, TRM_S1040_SCSI_STATUS
),
1246 DC395x_read8(acb
, TRM_S1040_SCSI_FIFOCNT
),
1247 DC395x_read8(acb
, TRM_S1040_SCSI_SIGNAL
),
1248 DC395x_read8(acb
, TRM_S1040_SCSI_INTSTATUS
),
1249 DC395x_read8(acb
, TRM_S1040_SCSI_SYNC
),
1250 DC395x_read8(acb
, TRM_S1040_SCSI_TARGETID
),
1251 DC395x_read8(acb
, TRM_S1040_SCSI_IDMSG
),
1252 DC395x_read32(acb
, TRM_S1040_SCSI_COUNTER
),
1253 DC395x_read8(acb
, TRM_S1040_SCSI_INTEN
),
1254 DC395x_read16(acb
, TRM_S1040_SCSI_CONFIG0
),
1255 DC395x_read8(acb
, TRM_S1040_SCSI_CONFIG2
),
1256 DC395x_read8(acb
, TRM_S1040_SCSI_COMMAND
),
1257 DC395x_read8(acb
, TRM_S1040_SCSI_TIMEOUT
));
1258 dprintkl(KERN_INFO
, "dump: DMA{cmd=0x%04x fifocnt=0x%02x fstat=0x%02x "
1259 "irqstat=0x%02x irqen=0x%02x cfg=0x%04x tctr=0x%08x "
1260 "ctctr=0x%08x addr=0x%08x:0x%08x}\n",
1261 DC395x_read16(acb
, TRM_S1040_DMA_COMMAND
),
1262 DC395x_read8(acb
, TRM_S1040_DMA_FIFOCNT
),
1263 DC395x_read8(acb
, TRM_S1040_DMA_FIFOSTAT
),
1264 DC395x_read8(acb
, TRM_S1040_DMA_STATUS
),
1265 DC395x_read8(acb
, TRM_S1040_DMA_INTEN
),
1266 DC395x_read16(acb
, TRM_S1040_DMA_CONFIG
),
1267 DC395x_read32(acb
, TRM_S1040_DMA_XCNT
),
1268 DC395x_read32(acb
, TRM_S1040_DMA_CXCNT
),
1269 DC395x_read32(acb
, TRM_S1040_DMA_XHIGHADDR
),
1270 DC395x_read32(acb
, TRM_S1040_DMA_XLOWADDR
));
1271 dprintkl(KERN_INFO
, "dump: gen{gctrl=0x%02x gstat=0x%02x gtmr=0x%02x} "
1272 "pci{status=0x%04x}\n",
1273 DC395x_read8(acb
, TRM_S1040_GEN_CONTROL
),
1274 DC395x_read8(acb
, TRM_S1040_GEN_STATUS
),
1275 DC395x_read8(acb
, TRM_S1040_GEN_TIMER
),
1280 static inline void clear_fifo(struct AdapterCtlBlk
*acb
, char *txt
)
1282 #if debug_enabled(DBG_FIFO)
1283 u8 lines
= DC395x_read8(acb
, TRM_S1040_SCSI_SIGNAL
);
1284 u8 fifocnt
= DC395x_read8(acb
, TRM_S1040_SCSI_FIFOCNT
);
1285 if (!(fifocnt
& 0x40))
1286 dprintkdbg(DBG_FIFO
,
1287 "clear_fifo: (%i bytes) on phase %02x in %s\n",
1288 fifocnt
& 0x3f, lines
, txt
);
1290 DC395x_write16(acb
, TRM_S1040_SCSI_CONTROL
, DO_CLRFIFO
);
1294 static void reset_dev_param(struct AdapterCtlBlk
*acb
)
1296 struct DeviceCtlBlk
*dcb
;
1297 struct NvRamType
*eeprom
= &acb
->eeprom
;
1298 dprintkdbg(DBG_0
, "reset_dev_param: acb=%p\n", acb
);
1300 list_for_each_entry(dcb
, &acb
->dcb_list
, list
) {
1303 dcb
->sync_mode
&= ~(SYNC_NEGO_DONE
+ WIDE_NEGO_DONE
);
1304 dcb
->sync_period
= 0;
1305 dcb
->sync_offset
= 0;
1307 dcb
->dev_mode
= eeprom
->target
[dcb
->target_id
].cfg0
;
1308 period_index
= eeprom
->target
[dcb
->target_id
].period
& 0x07;
1309 dcb
->min_nego_period
= clock_period
[period_index
];
1310 if (!(dcb
->dev_mode
& NTC_DO_WIDE_NEGO
)
1311 || !(acb
->config
& HCC_WIDE_CARD
))
1312 dcb
->sync_mode
&= ~WIDE_NEGO_ENABLE
;
1318 * perform a hard reset on the SCSI bus
1319 * @cmd - some command for this host (for fetching hooks)
1320 * Returns: SUCCESS (0x2002) on success, else FAILED (0x2003).
1322 static int __dc395x_eh_bus_reset(struct scsi_cmnd
*cmd
)
1324 struct AdapterCtlBlk
*acb
=
1325 (struct AdapterCtlBlk
*)cmd
->device
->host
->hostdata
;
1327 "eh_bus_reset: (pid#%li) target=<%02i-%i> cmd=%p\n",
1328 cmd
->pid
, cmd
->device
->id
, cmd
->device
->lun
, cmd
);
1330 if (timer_pending(&acb
->waiting_timer
))
1331 del_timer(&acb
->waiting_timer
);
1336 DC395x_write8(acb
, TRM_S1040_DMA_INTEN
, 0x00);
1337 DC395x_write8(acb
, TRM_S1040_SCSI_INTEN
, 0x00);
1338 DC395x_write8(acb
, TRM_S1040_SCSI_CONTROL
, DO_RSTMODULE
);
1339 DC395x_write8(acb
, TRM_S1040_DMA_CONTROL
, DMARESETMODULE
);
1341 reset_scsi_bus(acb
);
1344 /* We may be in serious trouble. Wait some seconds */
1345 acb
->scsi_host
->last_reset
=
1346 jiffies
+ 3 * HZ
/ 2 +
1347 HZ
* acb
->eeprom
.delay_time
;
1350 * re-enable interrupt
1352 /* Clear SCSI FIFO */
1353 DC395x_write8(acb
, TRM_S1040_DMA_CONTROL
, CLRXFIFO
);
1354 clear_fifo(acb
, "eh_bus_reset");
1355 /* Delete pending IRQ */
1356 DC395x_read8(acb
, TRM_S1040_SCSI_INTSTATUS
);
1357 set_basic_config(acb
);
1359 reset_dev_param(acb
);
1360 doing_srb_done(acb
, DID_RESET
, cmd
, 0);
1361 acb
->active_dcb
= NULL
;
1362 acb
->acb_flag
= 0; /* RESET_DETECT, RESET_DONE ,RESET_DEV */
1363 waiting_process_next(acb
);
1368 static int dc395x_eh_bus_reset(struct scsi_cmnd
*cmd
)
1372 spin_lock_irq(cmd
->device
->host
->host_lock
);
1373 rc
= __dc395x_eh_bus_reset(cmd
);
1374 spin_unlock_irq(cmd
->device
->host
->host_lock
);
1380 * abort an errant SCSI command
1381 * @cmd - command to be aborted
1382 * Returns: SUCCESS (0x2002) on success, else FAILED (0x2003).
1384 static int dc395x_eh_abort(struct scsi_cmnd
*cmd
)
1387 * Look into our command queues: If it has not been sent already,
1388 * we remove it and return success. Otherwise fail.
1390 struct AdapterCtlBlk
*acb
=
1391 (struct AdapterCtlBlk
*)cmd
->device
->host
->hostdata
;
1392 struct DeviceCtlBlk
*dcb
;
1393 struct ScsiReqBlk
*srb
;
1394 dprintkl(KERN_INFO
, "eh_abort: (pid#%li) target=<%02i-%i> cmd=%p\n",
1395 cmd
->pid
, cmd
->device
->id
, cmd
->device
->lun
, cmd
);
1397 dcb
= find_dcb(acb
, cmd
->device
->id
, cmd
->device
->lun
);
1399 dprintkl(KERN_DEBUG
, "eh_abort: No such device\n");
1403 srb
= find_cmd(cmd
, &dcb
->srb_waiting_list
);
1405 srb_waiting_remove(dcb
, srb
);
1406 pci_unmap_srb_sense(acb
, srb
);
1407 pci_unmap_srb(acb
, srb
);
1409 srb_free_insert(acb
, srb
);
1410 dprintkl(KERN_DEBUG
, "eh_abort: Command was waiting\n");
1411 cmd
->result
= DID_ABORT
<< 16;
1414 srb
= find_cmd(cmd
, &dcb
->srb_going_list
);
1416 dprintkl(KERN_DEBUG
, "eh_abort: Command in progress");
1417 /* XXX: Should abort the command here */
1419 dprintkl(KERN_DEBUG
, "eh_abort: Command not found");
1426 static void build_sdtr(struct AdapterCtlBlk
*acb
, struct DeviceCtlBlk
*dcb
,
1427 struct ScsiReqBlk
*srb
)
1429 u8
*ptr
= srb
->msgout_buf
+ srb
->msg_count
;
1430 if (srb
->msg_count
> 1) {
1432 "build_sdtr: msgout_buf BUSY (%i: %02x %02x)\n",
1433 srb
->msg_count
, srb
->msgout_buf
[0],
1434 srb
->msgout_buf
[1]);
1437 if (!(dcb
->dev_mode
& NTC_DO_SYNC_NEGO
)) {
1438 dcb
->sync_offset
= 0;
1439 dcb
->min_nego_period
= 200 >> 2;
1440 } else if (dcb
->sync_offset
== 0)
1441 dcb
->sync_offset
= SYNC_NEGO_OFFSET
;
1443 *ptr
++ = MSG_EXTENDED
; /* (01h) */
1444 *ptr
++ = 3; /* length */
1445 *ptr
++ = EXTENDED_SDTR
; /* (01h) */
1446 *ptr
++ = dcb
->min_nego_period
; /* Transfer period (in 4ns) */
1447 *ptr
++ = dcb
->sync_offset
; /* Transfer period (max. REQ/ACK dist) */
1448 srb
->msg_count
+= 5;
1449 srb
->state
|= SRB_DO_SYNC_NEGO
;
1454 static void build_wdtr(struct AdapterCtlBlk
*acb
, struct DeviceCtlBlk
*dcb
,
1455 struct ScsiReqBlk
*srb
)
1457 u8 wide
= ((dcb
->dev_mode
& NTC_DO_WIDE_NEGO
) &
1458 (acb
->config
& HCC_WIDE_CARD
)) ? 1 : 0;
1459 u8
*ptr
= srb
->msgout_buf
+ srb
->msg_count
;
1460 if (srb
->msg_count
> 1) {
1462 "build_wdtr: msgout_buf BUSY (%i: %02x %02x)\n",
1463 srb
->msg_count
, srb
->msgout_buf
[0],
1464 srb
->msgout_buf
[1]);
1467 *ptr
++ = MSG_EXTENDED
; /* (01h) */
1468 *ptr
++ = 2; /* length */
1469 *ptr
++ = EXTENDED_WDTR
; /* (03h) */
1471 srb
->msg_count
+= 4;
1472 srb
->state
|= SRB_DO_WIDE_NEGO
;
1477 /* Timer to work around chip flaw: When selecting and the bus is
1478 * busy, we sometimes miss a Selection timeout IRQ */
1479 void selection_timeout_missed(unsigned long ptr
);
1480 /* Sets the timer to wake us up */
1481 static void selto_timer(struct AdapterCtlBlk
*acb
)
1483 if (timer_pending(&acb
->selto_timer
))
1485 acb
->selto_timer
.function
= selection_timeout_missed
;
1486 acb
->selto_timer
.data
= (unsigned long) acb
;
1488 (jiffies
+ HZ
, acb
->scsi_host
->last_reset
+ HZ
/ 2))
1489 acb
->selto_timer
.expires
=
1490 acb
->scsi_host
->last_reset
+ HZ
/ 2 + 1;
1492 acb
->selto_timer
.expires
= jiffies
+ HZ
+ 1;
1493 add_timer(&acb
->selto_timer
);
1497 void selection_timeout_missed(unsigned long ptr
)
1499 unsigned long flags
;
1500 struct AdapterCtlBlk
*acb
= (struct AdapterCtlBlk
*)ptr
;
1501 struct ScsiReqBlk
*srb
;
1502 dprintkl(KERN_DEBUG
, "Chip forgot to produce SelTO IRQ!\n");
1503 if (!acb
->active_dcb
|| !acb
->active_dcb
->active_srb
) {
1504 dprintkl(KERN_DEBUG
, "... but no cmd pending? Oops!\n");
1507 DC395x_LOCK_IO(acb
->scsi_host
, flags
);
1508 srb
= acb
->active_dcb
->active_srb
;
1510 DC395x_UNLOCK_IO(acb
->scsi_host
, flags
);
1515 static u8
start_scsi(struct AdapterCtlBlk
* acb
, struct DeviceCtlBlk
* dcb
,
1516 struct ScsiReqBlk
* srb
)
1518 u16 s_stat2
, return_code
;
1519 u8 s_stat
, scsicommand
, i
, identify_message
;
1521 dprintkdbg(DBG_0
, "start_scsi: (pid#%li) <%02i-%i> srb=%p\n",
1522 srb
->cmd
->pid
, dcb
->target_id
, dcb
->target_lun
, srb
);
1524 srb
->tag_number
= TAG_NONE
; /* acb->tag_max_num: had error read in eeprom */
1526 s_stat
= DC395x_read8(acb
, TRM_S1040_SCSI_SIGNAL
);
1528 s_stat2
= DC395x_read16(acb
, TRM_S1040_SCSI_STATUS
);
1530 if (s_stat
& 0x20 /* s_stat2 & 0x02000 */ ) {
1531 dprintkdbg(DBG_KG
, "start_scsi: (pid#%li) BUSY %02x %04x\n",
1532 srb
->cmd
->pid
, s_stat
, s_stat2
);
1536 * We could, BUT: Sometimes the TRM_S1040 misses to produce a Selection
1537 * Timeout, a Disconnect or a Reselction IRQ, so we would be screwed!
1538 * (This is likely to be a bug in the hardware. Obviously, most people
1539 * only have one initiator per SCSI bus.)
1540 * Instead let this fail and have the timer make sure the command is
1541 * tried again after a short time
1543 /*selto_timer (acb); */
1547 if (acb
->active_dcb
) {
1548 dprintkl(KERN_DEBUG
, "start_scsi: (pid#%li) Attempt to start a"
1549 "command while another command (pid#%li) is active.",
1551 acb
->active_dcb
->active_srb
?
1552 acb
->active_dcb
->active_srb
->cmd
->pid
: 0);
1555 if (DC395x_read16(acb
, TRM_S1040_SCSI_STATUS
) & SCSIINTERRUPT
) {
1556 dprintkdbg(DBG_KG
, "start_scsi: (pid#%li) Failed (busy)\n",
1560 /* Allow starting of SCSI commands half a second before we allow the mid-level
1561 * to queue them again after a reset */
1562 if (time_before(jiffies
, acb
->scsi_host
->last_reset
- HZ
/ 2)) {
1563 dprintkdbg(DBG_KG
, "start_scsi: Refuse cmds (reset wait)\n");
1568 clear_fifo(acb
, "start_scsi");
1569 DC395x_write8(acb
, TRM_S1040_SCSI_HOSTID
, acb
->scsi_host
->this_id
);
1570 DC395x_write8(acb
, TRM_S1040_SCSI_TARGETID
, dcb
->target_id
);
1571 DC395x_write8(acb
, TRM_S1040_SCSI_SYNC
, dcb
->sync_period
);
1572 DC395x_write8(acb
, TRM_S1040_SCSI_OFFSET
, dcb
->sync_offset
);
1573 srb
->scsi_phase
= PH_BUS_FREE
; /* initial phase */
1575 identify_message
= dcb
->identify_msg
;
1576 /*DC395x_TRM_write8(TRM_S1040_SCSI_IDMSG, identify_message); */
1577 /* Don't allow disconnection for AUTO_REQSENSE: Cont.All.Cond.! */
1578 if (srb
->flag
& AUTO_REQSENSE
)
1579 identify_message
&= 0xBF;
1581 if (((srb
->cmd
->cmnd
[0] == INQUIRY
)
1582 || (srb
->cmd
->cmnd
[0] == REQUEST_SENSE
)
1583 || (srb
->flag
& AUTO_REQSENSE
))
1584 && (((dcb
->sync_mode
& WIDE_NEGO_ENABLE
)
1585 && !(dcb
->sync_mode
& WIDE_NEGO_DONE
))
1586 || ((dcb
->sync_mode
& SYNC_NEGO_ENABLE
)
1587 && !(dcb
->sync_mode
& SYNC_NEGO_DONE
)))
1588 && (dcb
->target_lun
== 0)) {
1589 srb
->msgout_buf
[0] = identify_message
;
1591 scsicommand
= SCMD_SEL_ATNSTOP
;
1592 srb
->state
= SRB_MSGOUT
;
1594 if (dcb
->sync_mode
& WIDE_NEGO_ENABLE
1595 && dcb
->inquiry7
& SCSI_INQ_WBUS16
) {
1596 build_wdtr(acb
, dcb
, srb
);
1600 if (dcb
->sync_mode
& SYNC_NEGO_ENABLE
1601 && dcb
->inquiry7
& SCSI_INQ_SYNC
) {
1602 build_sdtr(acb
, dcb
, srb
);
1605 if (dcb
->sync_mode
& WIDE_NEGO_ENABLE
1606 && dcb
->inquiry7
& SCSI_INQ_WBUS16
) {
1607 build_wdtr(acb
, dcb
, srb
);
1612 /* Send identify message */
1613 DC395x_write8(acb
, TRM_S1040_SCSI_FIFO
, identify_message
);
1615 scsicommand
= SCMD_SEL_ATN
;
1616 srb
->state
= SRB_START_
;
1617 #ifndef DC395x_NO_TAGQ
1618 if ((dcb
->sync_mode
& EN_TAG_QUEUEING
)
1619 && (identify_message
& 0xC0)) {
1620 /* Send Tag message */
1623 while (tag_mask
& dcb
->tag_mask
1624 && tag_number
<= dcb
->max_command
) {
1625 tag_mask
= tag_mask
<< 1;
1628 if (tag_number
>= dcb
->max_command
) {
1629 dprintkl(KERN_WARNING
, "start_scsi: (pid#%li) "
1630 "Out of tags target=<%02i-%i>)\n",
1631 srb
->cmd
->pid
, srb
->cmd
->device
->id
,
1632 srb
->cmd
->device
->lun
);
1633 srb
->state
= SRB_READY
;
1634 DC395x_write16(acb
, TRM_S1040_SCSI_CONTROL
,
1639 DC395x_write8(acb
, TRM_S1040_SCSI_FIFO
, MSG_SIMPLE_QTAG
);
1640 DC395x_write8(acb
, TRM_S1040_SCSI_FIFO
, tag_number
);
1641 dcb
->tag_mask
|= tag_mask
;
1642 srb
->tag_number
= tag_number
;
1643 scsicommand
= SCMD_SEL_ATN3
;
1644 srb
->state
= SRB_START_
;
1648 /* Send CDB ..command block ......... */
1649 dprintkdbg(DBG_KG
, "start_scsi: (pid#%li) <%02i-%i> cmnd=0x%02x tag=%i\n",
1650 srb
->cmd
->pid
, srb
->cmd
->device
->id
, srb
->cmd
->device
->lun
,
1651 srb
->cmd
->cmnd
[0], srb
->tag_number
);
1652 if (srb
->flag
& AUTO_REQSENSE
) {
1653 DC395x_write8(acb
, TRM_S1040_SCSI_FIFO
, REQUEST_SENSE
);
1654 DC395x_write8(acb
, TRM_S1040_SCSI_FIFO
, (dcb
->target_lun
<< 5));
1655 DC395x_write8(acb
, TRM_S1040_SCSI_FIFO
, 0);
1656 DC395x_write8(acb
, TRM_S1040_SCSI_FIFO
, 0);
1657 DC395x_write8(acb
, TRM_S1040_SCSI_FIFO
,
1658 sizeof(srb
->cmd
->sense_buffer
));
1659 DC395x_write8(acb
, TRM_S1040_SCSI_FIFO
, 0);
1661 ptr
= (u8
*)srb
->cmd
->cmnd
;
1662 for (i
= 0; i
< srb
->cmd
->cmd_len
; i
++)
1663 DC395x_write8(acb
, TRM_S1040_SCSI_FIFO
, *ptr
++);
1666 DC395x_write16(acb
, TRM_S1040_SCSI_CONTROL
,
1667 DO_HWRESELECT
| DO_DATALATCH
);
1668 if (DC395x_read16(acb
, TRM_S1040_SCSI_STATUS
) & SCSIINTERRUPT
) {
1670 * If start_scsi return 1:
1671 * we caught an interrupt (must be reset or reselection ... )
1672 * : Let's process it first!
1674 dprintkdbg(DBG_0
, "start_scsi: (pid#%li) <%02i-%i> Failed - busy\n",
1675 srb
->cmd
->pid
, dcb
->target_id
, dcb
->target_lun
);
1676 srb
->state
= SRB_READY
;
1680 /* This IRQ should NOT get lost, as we did not acknowledge it */
1683 * If start_scsi returns 0:
1684 * we know that the SCSI processor is free
1686 srb
->scsi_phase
= PH_BUS_FREE
; /* initial phase */
1687 dcb
->active_srb
= srb
;
1688 acb
->active_dcb
= dcb
;
1690 /* it's important for atn stop */
1691 DC395x_write16(acb
, TRM_S1040_SCSI_CONTROL
,
1692 DO_DATALATCH
| DO_HWRESELECT
);
1694 DC395x_write8(acb
, TRM_S1040_SCSI_COMMAND
, scsicommand
);
1700 #define DC395x_ENABLE_MSGOUT \
1701 DC395x_write16 (acb, TRM_S1040_SCSI_CONTROL, DO_SETATN); \
1702 srb->state |= SRB_MSGOUT
1706 static inline void enable_msgout_abort(struct AdapterCtlBlk
*acb
,
1707 struct ScsiReqBlk
*srb
)
1709 srb
->msgout_buf
[0] = ABORT
;
1711 DC395x_ENABLE_MSGOUT
;
1712 srb
->state
&= ~SRB_MSGIN
;
1713 srb
->state
|= SRB_MSGOUT
;
1718 * dc395x_handle_interrupt - Handle an interrupt that has been confirmed to
1719 * have been triggered for this card.
1721 * @acb: a pointer to the adpter control block
1722 * @scsi_status: the status return when we checked the card
1724 static void dc395x_handle_interrupt(struct AdapterCtlBlk
*acb
,
1727 struct DeviceCtlBlk
*dcb
;
1728 struct ScsiReqBlk
*srb
;
1731 unsigned long flags
;
1732 void (*dc395x_statev
)(struct AdapterCtlBlk
*, struct ScsiReqBlk
*,
1735 DC395x_LOCK_IO(acb
->scsi_host
, flags
);
1737 /* This acknowledges the IRQ */
1738 scsi_intstatus
= DC395x_read8(acb
, TRM_S1040_SCSI_INTSTATUS
);
1739 if ((scsi_status
& 0x2007) == 0x2002)
1740 dprintkl(KERN_DEBUG
,
1741 "COP after COP completed? %04x\n", scsi_status
);
1742 if (debug_enabled(DBG_KG
)) {
1743 if (scsi_intstatus
& INT_SELTIMEOUT
)
1744 dprintkdbg(DBG_KG
, "handle_interrupt: Selection timeout\n");
1746 /*dprintkl(KERN_DEBUG, "handle_interrupt: intstatus = 0x%02x ", scsi_intstatus); */
1748 if (timer_pending(&acb
->selto_timer
))
1749 del_timer(&acb
->selto_timer
);
1751 if (scsi_intstatus
& (INT_SELTIMEOUT
| INT_DISCONNECT
)) {
1752 disconnect(acb
); /* bus free interrupt */
1755 if (scsi_intstatus
& INT_RESELECTED
) {
1759 if (scsi_intstatus
& INT_SELECT
) {
1760 dprintkl(KERN_INFO
, "Host does not support target mode!\n");
1763 if (scsi_intstatus
& INT_SCSIRESET
) {
1764 scsi_reset_detect(acb
);
1767 if (scsi_intstatus
& (INT_BUSSERVICE
| INT_CMDDONE
)) {
1768 dcb
= acb
->active_dcb
;
1770 dprintkl(KERN_DEBUG
,
1771 "Oops: BusService (%04x %02x) w/o ActiveDCB!\n",
1772 scsi_status
, scsi_intstatus
);
1775 srb
= dcb
->active_srb
;
1776 if (dcb
->flag
& ABORT_DEV_
) {
1777 dprintkdbg(DBG_0
, "MsgOut Abort Device.....\n");
1778 enable_msgout_abort(acb
, srb
);
1781 /* software sequential machine */
1782 phase
= (u16
)srb
->scsi_phase
;
1786 * call dc395x_scsi_phase0[]... "phase entry"
1787 * handle every phase before start transfer
1789 /* data_out_phase0, phase:0 */
1790 /* data_in_phase0, phase:1 */
1791 /* command_phase0, phase:2 */
1792 /* status_phase0, phase:3 */
1793 /* nop0, phase:4 PH_BUS_FREE .. initial phase */
1794 /* nop0, phase:5 PH_BUS_FREE .. initial phase */
1795 /* msgout_phase0, phase:6 */
1796 /* msgin_phase0, phase:7 */
1797 dc395x_statev
= dc395x_scsi_phase0
[phase
];
1798 dc395x_statev(acb
, srb
, &scsi_status
);
1801 * if there were any exception occured scsi_status
1802 * will be modify to bus free phase new scsi_status
1803 * transfer out from ... previous dc395x_statev
1805 srb
->scsi_phase
= scsi_status
& PHASEMASK
;
1806 phase
= (u16
)scsi_status
& PHASEMASK
;
1809 * call dc395x_scsi_phase1[]... "phase entry" handle
1810 * every phase to do transfer
1812 /* data_out_phase1, phase:0 */
1813 /* data_in_phase1, phase:1 */
1814 /* command_phase1, phase:2 */
1815 /* status_phase1, phase:3 */
1816 /* nop1, phase:4 PH_BUS_FREE .. initial phase */
1817 /* nop1, phase:5 PH_BUS_FREE .. initial phase */
1818 /* msgout_phase1, phase:6 */
1819 /* msgin_phase1, phase:7 */
1820 dc395x_statev
= dc395x_scsi_phase1
[phase
];
1821 dc395x_statev(acb
, srb
, &scsi_status
);
1824 DC395x_UNLOCK_IO(acb
->scsi_host
, flags
);
1828 static irqreturn_t
dc395x_interrupt(int irq
, void *dev_id
,
1829 struct pt_regs
*regs
)
1831 struct AdapterCtlBlk
*acb
= (struct AdapterCtlBlk
*)dev_id
;
1834 irqreturn_t handled
= IRQ_NONE
;
1837 * Check for pending interupt
1839 scsi_status
= DC395x_read16(acb
, TRM_S1040_SCSI_STATUS
);
1840 dma_status
= DC395x_read8(acb
, TRM_S1040_DMA_STATUS
);
1841 if (scsi_status
& SCSIINTERRUPT
) {
1842 /* interupt pending - let's process it! */
1843 dc395x_handle_interrupt(acb
, scsi_status
);
1844 handled
= IRQ_HANDLED
;
1846 else if (dma_status
& 0x20) {
1847 /* Error from the DMA engine */
1848 dprintkl(KERN_INFO
, "Interrupt from DMA engine: 0x%02x!\n", dma_status
);
1850 dprintkl(KERN_INFO
, "This means DMA error! Try to handle ...\n");
1851 if (acb
->active_dcb
) {
1852 acb
->active_dcb
-> flag
|= ABORT_DEV_
;
1853 if (acb
->active_dcb
->active_srb
)
1854 enable_msgout_abort(acb
, acb
->active_dcb
->active_srb
);
1856 DC395x_write8(acb
, TRM_S1040_DMA_CONTROL
, ABORTXFER
| CLRXFIFO
);
1858 dprintkl(KERN_INFO
, "Ignoring DMA error (probably a bad thing) ...\n");
1861 handled
= IRQ_HANDLED
;
1868 static void msgout_phase0(struct AdapterCtlBlk
*acb
, struct ScsiReqBlk
*srb
,
1871 dprintkdbg(DBG_0
, "msgout_phase0: (pid#%li)\n", srb
->cmd
->pid
);
1872 if (srb
->state
& (SRB_UNEXPECT_RESEL
+ SRB_ABORT_SENT
))
1873 *pscsi_status
= PH_BUS_FREE
; /*.. initial phase */
1875 DC395x_write16(acb
, TRM_S1040_SCSI_CONTROL
, DO_DATALATCH
); /* it's important for atn stop */
1876 srb
->state
&= ~SRB_MSGOUT
;
1880 static void msgout_phase1(struct AdapterCtlBlk
*acb
, struct ScsiReqBlk
*srb
,
1885 dprintkdbg(DBG_0
, "msgout_phase1: (pid#%li)\n", srb
->cmd
->pid
);
1887 clear_fifo(acb
, "msgout_phase1");
1888 if (!(srb
->state
& SRB_MSGOUT
)) {
1889 srb
->state
|= SRB_MSGOUT
;
1890 dprintkl(KERN_DEBUG
,
1891 "msgout_phase1: (pid#%li) Phase unexpected\n",
1892 srb
->cmd
->pid
); /* So what ? */
1894 if (!srb
->msg_count
) {
1895 dprintkdbg(DBG_0
, "msgout_phase1: (pid#%li) NOP msg\n",
1897 DC395x_write8(acb
, TRM_S1040_SCSI_FIFO
, MSG_NOP
);
1898 DC395x_write16(acb
, TRM_S1040_SCSI_CONTROL
, DO_DATALATCH
); /* it's important for atn stop */
1899 DC395x_write8(acb
, TRM_S1040_SCSI_COMMAND
, SCMD_FIFO_OUT
);
1902 ptr
= (u8
*)srb
->msgout_buf
;
1903 for (i
= 0; i
< srb
->msg_count
; i
++)
1904 DC395x_write8(acb
, TRM_S1040_SCSI_FIFO
, *ptr
++);
1906 if (srb
->msgout_buf
[0] == MSG_ABORT
)
1907 srb
->state
= SRB_ABORT_SENT
;
1909 DC395x_write8(acb
, TRM_S1040_SCSI_COMMAND
, SCMD_FIFO_OUT
);
1913 static void command_phase0(struct AdapterCtlBlk
*acb
, struct ScsiReqBlk
*srb
,
1916 dprintkdbg(DBG_0
, "command_phase0: (pid#%li)\n", srb
->cmd
->pid
);
1917 DC395x_write16(acb
, TRM_S1040_SCSI_CONTROL
, DO_DATALATCH
);
1921 static void command_phase1(struct AdapterCtlBlk
*acb
, struct ScsiReqBlk
*srb
,
1924 struct DeviceCtlBlk
*dcb
;
1927 dprintkdbg(DBG_0
, "command_phase1: (pid#%li)\n", srb
->cmd
->pid
);
1929 clear_fifo(acb
, "command_phase1");
1930 DC395x_write16(acb
, TRM_S1040_SCSI_CONTROL
, DO_CLRATN
);
1931 if (!(srb
->flag
& AUTO_REQSENSE
)) {
1932 ptr
= (u8
*)srb
->cmd
->cmnd
;
1933 for (i
= 0; i
< srb
->cmd
->cmd_len
; i
++) {
1934 DC395x_write8(acb
, TRM_S1040_SCSI_FIFO
, *ptr
);
1938 DC395x_write8(acb
, TRM_S1040_SCSI_FIFO
, REQUEST_SENSE
);
1939 dcb
= acb
->active_dcb
;
1941 DC395x_write8(acb
, TRM_S1040_SCSI_FIFO
, (dcb
->target_lun
<< 5));
1942 DC395x_write8(acb
, TRM_S1040_SCSI_FIFO
, 0);
1943 DC395x_write8(acb
, TRM_S1040_SCSI_FIFO
, 0);
1944 DC395x_write8(acb
, TRM_S1040_SCSI_FIFO
,
1945 sizeof(srb
->cmd
->sense_buffer
));
1946 DC395x_write8(acb
, TRM_S1040_SCSI_FIFO
, 0);
1948 srb
->state
|= SRB_COMMAND
;
1949 /* it's important for atn stop */
1950 DC395x_write16(acb
, TRM_S1040_SCSI_CONTROL
, DO_DATALATCH
);
1952 DC395x_write8(acb
, TRM_S1040_SCSI_COMMAND
, SCMD_FIFO_OUT
);
1957 * Verify that the remaining space in the hw sg lists is the same as
1958 * the count of remaining bytes in srb->total_xfer_length
1960 static void sg_verify_length(struct ScsiReqBlk
*srb
)
1962 if (debug_enabled(DBG_SG
)) {
1964 unsigned idx
= srb
->sg_index
;
1965 struct SGentry
*psge
= srb
->segment_x
+ idx
;
1966 for (; idx
< srb
->sg_count
; psge
++, idx
++)
1967 len
+= psge
->length
;
1968 if (len
!= srb
->total_xfer_length
)
1970 "Inconsistent SRB S/G lengths (Tot=%i, Count=%i) !!\n",
1971 srb
->total_xfer_length
, len
);
1977 * Compute the next Scatter Gather list index and adjust its length
1978 * and address if necessary; also compute virt_addr
1980 static void sg_update_list(struct ScsiReqBlk
*srb
, u32 left
)
1983 struct scatterlist
*sg
;
1984 struct scsi_cmnd
*cmd
= srb
->cmd
;
1985 int segment
= cmd
->use_sg
;
1986 u32 xferred
= srb
->total_xfer_length
- left
; /* bytes transfered */
1987 struct SGentry
*psge
= srb
->segment_x
+ srb
->sg_index
;
1990 "sg_update_list: Transfered %i of %i bytes, %i remain\n",
1991 xferred
, srb
->total_xfer_length
, left
);
1993 /* nothing to update since we did not transfer any data */
1997 sg_verify_length(srb
);
1998 srb
->total_xfer_length
= left
; /* update remaining count */
1999 for (idx
= srb
->sg_index
; idx
< srb
->sg_count
; idx
++) {
2000 if (xferred
>= psge
->length
) {
2001 /* Complete SG entries done */
2002 xferred
-= psge
->length
;
2004 /* Partial SG entry done */
2005 psge
->length
-= xferred
;
2006 psge
->address
+= xferred
;
2007 srb
->sg_index
= idx
;
2008 pci_dma_sync_single_for_device(srb
->dcb
->
2017 sg_verify_length(srb
);
2019 /* we need the corresponding virtual address */
2021 srb
->virt_addr
+= xferred
;
2025 /* We have to walk the scatterlist to find it */
2026 sg
= (struct scatterlist
*)cmd
->request_buffer
;
2028 unsigned long mask
=
2029 ~((unsigned long)sg
->length
- 1) & PAGE_MASK
;
2030 if ((sg_dma_address(sg
) & mask
) == (psge
->address
& mask
)) {
2031 srb
->virt_addr
= (page_address(sg
->page
)
2033 (psge
->address
& PAGE_MASK
));
2039 dprintkl(KERN_ERR
, "sg_update_list: sg_to_virt failed\n");
2040 srb
->virt_addr
= NULL
;
2045 * We have transfered a single byte (PIO mode?) and need to update
2046 * the count of bytes remaining (total_xfer_length) and update the sg
2047 * entry to either point to next byte in the current sg entry, or of
2048 * already at the end to point to the start of the next sg entry
2050 static void sg_subtract_one(struct ScsiReqBlk
*srb
)
2052 srb
->total_xfer_length
--;
2053 srb
->segment_x
[srb
->sg_index
].length
--;
2054 if (srb
->total_xfer_length
&&
2055 !srb
->segment_x
[srb
->sg_index
].length
) {
2056 if (debug_enabled(DBG_PIO
))
2057 printk(" (next segment)");
2059 sg_update_list(srb
, srb
->total_xfer_length
);
2065 * cleanup_after_transfer
2067 * Makes sure, DMA and SCSI engine are empty, after the transfer has finished
2068 * KG: Currently called from StatusPhase1 ()
2069 * Should probably also be called from other places
2070 * Best might be to call it in DataXXPhase0, if new phase will differ
2072 static void cleanup_after_transfer(struct AdapterCtlBlk
*acb
,
2073 struct ScsiReqBlk
*srb
)
2075 /*DC395x_write8 (TRM_S1040_DMA_STATUS, FORCEDMACOMP); */
2076 if (DC395x_read16(acb
, TRM_S1040_DMA_COMMAND
) & 0x0001) { /* read */
2077 if (!(DC395x_read8(acb
, TRM_S1040_SCSI_FIFOCNT
) & 0x40))
2078 clear_fifo(acb
, "cleanup/in");
2079 if (!(DC395x_read8(acb
, TRM_S1040_DMA_FIFOSTAT
) & 0x80))
2080 DC395x_write8(acb
, TRM_S1040_DMA_CONTROL
, CLRXFIFO
);
2081 } else { /* write */
2082 if (!(DC395x_read8(acb
, TRM_S1040_DMA_FIFOSTAT
) & 0x80))
2083 DC395x_write8(acb
, TRM_S1040_DMA_CONTROL
, CLRXFIFO
);
2084 if (!(DC395x_read8(acb
, TRM_S1040_SCSI_FIFOCNT
) & 0x40))
2085 clear_fifo(acb
, "cleanup/out");
2087 DC395x_write16(acb
, TRM_S1040_SCSI_CONTROL
, DO_DATALATCH
);
2092 * Those no of bytes will be transfered w/ PIO through the SCSI FIFO
2093 * Seems to be needed for unknown reasons; could be a hardware bug :-(
2095 #define DC395x_LASTPIO 4
2098 static void data_out_phase0(struct AdapterCtlBlk
*acb
, struct ScsiReqBlk
*srb
,
2101 struct DeviceCtlBlk
*dcb
= srb
->dcb
;
2102 u16 scsi_status
= *pscsi_status
;
2103 u32 d_left_counter
= 0;
2104 dprintkdbg(DBG_0
, "data_out_phase0: (pid#%li) <%02i-%i>\n",
2105 srb
->cmd
->pid
, srb
->cmd
->device
->id
, srb
->cmd
->device
->lun
);
2108 * KG: We need to drain the buffers before we draw any conclusions!
2109 * This means telling the DMA to push the rest into SCSI, telling
2110 * SCSI to push the rest to the bus.
2111 * However, the device might have been the one to stop us (phase
2112 * change), and the data in transit just needs to be accounted so
2113 * it can be retransmitted.)
2116 * KG: Stop DMA engine pushing more data into the SCSI FIFO
2117 * If we need more data, the DMA SG list will be freshly set up, anyway
2119 dprintkdbg(DBG_PIO
, "data_out_phase0: "
2120 "DMA{fifcnt=0x%02x fifostat=0x%02x} "
2121 "SCSI{fifocnt=0x%02x cnt=0x%06x status=0x%04x} total=0x%06x\n",
2122 DC395x_read8(acb
, TRM_S1040_DMA_FIFOCNT
),
2123 DC395x_read8(acb
, TRM_S1040_DMA_FIFOSTAT
),
2124 DC395x_read8(acb
, TRM_S1040_SCSI_FIFOCNT
),
2125 DC395x_read32(acb
, TRM_S1040_SCSI_COUNTER
), scsi_status
,
2126 srb
->total_xfer_length
);
2127 DC395x_write8(acb
, TRM_S1040_DMA_CONTROL
, STOPDMAXFER
| CLRXFIFO
);
2129 if (!(srb
->state
& SRB_XFERPAD
)) {
2130 if (scsi_status
& PARITYERROR
)
2131 srb
->status
|= PARITY_ERROR
;
2134 * KG: Right, we can't just rely on the SCSI_COUNTER, because this
2135 * is the no of bytes it got from the DMA engine not the no it
2136 * transferred successfully to the device. (And the difference could
2137 * be as much as the FIFO size, I guess ...)
2139 if (!(scsi_status
& SCSIXFERDONE
)) {
2141 * when data transfer from DMA FIFO to SCSI FIFO
2142 * if there was some data left in SCSI FIFO
2145 (u32
)(DC395x_read8(acb
, TRM_S1040_SCSI_FIFOCNT
) &
2147 if (dcb
->sync_period
& WIDE_SYNC
)
2148 d_left_counter
<<= 1;
2150 dprintkdbg(DBG_KG
, "data_out_phase0: FIFO contains %i %s\n"
2151 "SCSI{fifocnt=0x%02x cnt=0x%08x} "
2152 "DMA{fifocnt=0x%04x cnt=0x%02x ctr=0x%08x}\n",
2153 DC395x_read8(acb
, TRM_S1040_SCSI_FIFOCNT
),
2154 (dcb
->sync_period
& WIDE_SYNC
) ? "words" : "bytes",
2155 DC395x_read8(acb
, TRM_S1040_SCSI_FIFOCNT
),
2156 DC395x_read32(acb
, TRM_S1040_SCSI_COUNTER
),
2157 DC395x_read8(acb
, TRM_S1040_DMA_FIFOCNT
),
2158 DC395x_read8(acb
, TRM_S1040_DMA_FIFOSTAT
),
2159 DC395x_read32(acb
, TRM_S1040_DMA_CXCNT
));
2162 * calculate all the residue data that not yet tranfered
2163 * SCSI transfer counter + left in SCSI FIFO data
2165 * .....TRM_S1040_SCSI_COUNTER (24bits)
2166 * The counter always decrement by one for every SCSI byte transfer.
2167 * .....TRM_S1040_SCSI_FIFOCNT ( 5bits)
2168 * The counter is SCSI FIFO offset counter (in units of bytes or! words)
2170 if (srb
->total_xfer_length
> DC395x_LASTPIO
)
2172 DC395x_read32(acb
, TRM_S1040_SCSI_COUNTER
);
2174 /* Is this a good idea? */
2175 /*clear_fifo(acb, "DOP1"); */
2176 /* KG: What is this supposed to be useful for? WIDE padding stuff? */
2177 if (d_left_counter
== 1 && dcb
->sync_period
& WIDE_SYNC
2178 && srb
->cmd
->request_bufflen
% 2) {
2181 "data_out_phase0: Discard 1 byte (0x%02x)\n",
2185 * KG: Oops again. Same thinko as above: The SCSI might have been
2186 * faster than the DMA engine, so that it ran out of data.
2187 * In that case, we have to do just nothing!
2188 * But: Why the interrupt: No phase change. No XFERCNT_2_ZERO. Or?
2191 * KG: This is nonsense: We have been WRITING data to the bus
2192 * If the SCSI engine has no bytes left, how should the DMA engine?
2194 if (d_left_counter
== 0) {
2195 srb
->total_xfer_length
= 0;
2198 * if transfer not yet complete
2199 * there were some data residue in SCSI FIFO or
2200 * SCSI transfer counter not empty
2203 srb
->total_xfer_length
- d_left_counter
;
2205 (dcb
->sync_period
& WIDE_SYNC
) ? 2 : 1;
2206 sg_update_list(srb
, d_left_counter
);
2207 /* KG: Most ugly hack! Apparently, this works around a chip bug */
2208 if ((srb
->segment_x
[srb
->sg_index
].length
==
2209 diff
&& srb
->cmd
->use_sg
)
2210 || ((oldxferred
& ~PAGE_MASK
) ==
2213 dprintkl(KERN_INFO
, "data_out_phase0: "
2214 "Work around chip bug (%i)?\n", diff
);
2216 srb
->total_xfer_length
- diff
;
2217 sg_update_list(srb
, d_left_counter
);
2218 /*srb->total_xfer_length -= diff; */
2219 /*srb->virt_addr += diff; */
2220 /*if (srb->cmd->use_sg) */
2221 /* srb->sg_index++; */
2225 if ((*pscsi_status
& PHASEMASK
) != PH_DATA_OUT
) {
2226 cleanup_after_transfer(acb
, srb
);
2231 static void data_out_phase1(struct AdapterCtlBlk
*acb
, struct ScsiReqBlk
*srb
,
2234 dprintkdbg(DBG_0
, "data_out_phase1: (pid#%li) <%02i-%i>\n",
2235 srb
->cmd
->pid
, srb
->cmd
->device
->id
, srb
->cmd
->device
->lun
);
2236 clear_fifo(acb
, "data_out_phase1");
2237 /* do prepare before transfer when data out phase */
2238 data_io_transfer(acb
, srb
, XFERDATAOUT
);
2242 static void data_in_phase0(struct AdapterCtlBlk
*acb
, struct ScsiReqBlk
*srb
,
2245 u16 scsi_status
= *pscsi_status
;
2246 u32 d_left_counter
= 0;
2247 dprintkdbg(DBG_0
, "data_in_phase0: (pid#%li) <%02i-%i>\n",
2248 srb
->cmd
->pid
, srb
->cmd
->device
->id
, srb
->cmd
->device
->lun
);
2251 * KG: DataIn is much more tricky than DataOut. When the device is finished
2252 * and switches to another phase, the SCSI engine should be finished too.
2253 * But: There might still be bytes left in its FIFO to be fetched by the DMA
2254 * engine and transferred to memory.
2255 * We should wait for the FIFOs to be emptied by that (is there any way to
2256 * enforce this?) and then stop the DMA engine, because it might think, that
2257 * there are more bytes to follow. Yes, the device might disconnect prior to
2258 * having all bytes transferred!
2259 * Also we should make sure that all data from the DMA engine buffer's really
2260 * made its way to the system memory! Some documentation on this would not
2261 * seem to be a bad idea, actually.
2263 if (!(srb
->state
& SRB_XFERPAD
)) {
2264 if (scsi_status
& PARITYERROR
) {
2265 dprintkl(KERN_INFO
, "data_in_phase0: (pid#%li) "
2266 "Parity Error\n", srb
->cmd
->pid
);
2267 srb
->status
|= PARITY_ERROR
;
2270 * KG: We should wait for the DMA FIFO to be empty ...
2271 * but: it would be better to wait first for the SCSI FIFO and then the
2272 * the DMA FIFO to become empty? How do we know, that the device not already
2273 * sent data to the FIFO in a MsgIn phase, eg.?
2275 if (!(DC395x_read8(acb
, TRM_S1040_DMA_FIFOSTAT
) & 0x80)) {
2278 dprintkl(KERN_DEBUG
,
2279 "DIP0: Wait for DMA FIFO to flush ...\n");
2280 /*DC395x_write8 (TRM_S1040_DMA_CONTROL, STOPDMAXFER); */
2281 /*DC395x_write32 (TRM_S1040_SCSI_COUNTER, 7); */
2282 /*DC395x_write8 (TRM_S1040_SCSI_COMMAND, SCMD_DMA_IN); */
2284 (DC395x_read16(acb
, TRM_S1040_DMA_FIFOSTAT
) &
2286 if (ctr
< 6000000 - 1)
2288 "DIP0: Had to wait for DMA ...\n");
2291 "Deadlock in DIP0 waiting for DMA FIFO empty!!\n");
2292 /*DC395x_write32 (TRM_S1040_SCSI_COUNTER, 0); */
2294 dprintkdbg(DBG_KG
, "data_in_phase0: "
2295 "DMA{fifocnt=0x%02x fifostat=0x%02x}\n",
2296 DC395x_read8(acb
, TRM_S1040_DMA_FIFOCNT
),
2297 DC395x_read8(acb
, TRM_S1040_DMA_FIFOSTAT
));
2299 /* Now: Check remainig data: The SCSI counters should tell us ... */
2300 d_left_counter
= DC395x_read32(acb
, TRM_S1040_SCSI_COUNTER
)
2301 + ((DC395x_read8(acb
, TRM_S1040_SCSI_FIFOCNT
) & 0x1f)
2302 << ((srb
->dcb
->sync_period
& WIDE_SYNC
) ? 1 :
2304 dprintkdbg(DBG_KG
, "data_in_phase0: "
2305 "SCSI{fifocnt=0x%02x%s ctr=0x%08x} "
2306 "DMA{fifocnt=0x%02x fifostat=0x%02x ctr=0x%08x} "
2307 "Remain{totxfer=%i scsi_fifo+ctr=%i}\n",
2308 DC395x_read8(acb
, TRM_S1040_SCSI_FIFOCNT
),
2309 (srb
->dcb
->sync_period
& WIDE_SYNC
) ? "words" : "bytes",
2310 DC395x_read32(acb
, TRM_S1040_SCSI_COUNTER
),
2311 DC395x_read8(acb
, TRM_S1040_DMA_FIFOCNT
),
2312 DC395x_read8(acb
, TRM_S1040_DMA_FIFOSTAT
),
2313 DC395x_read32(acb
, TRM_S1040_DMA_CXCNT
),
2314 srb
->total_xfer_length
, d_left_counter
);
2316 /* KG: Less than or equal to 4 bytes can not be transfered via DMA, it seems. */
2318 && srb
->total_xfer_length
<= DC395x_LASTPIO
) {
2319 /*u32 addr = (srb->segment_x[srb->sg_index].address); */
2320 /*sg_update_list (srb, d_left_counter); */
2321 dprintkdbg(DBG_PIO
, "data_in_phase0: PIO (%i %s) to "
2322 "%p for remaining %i bytes:",
2323 DC395x_read8(acb
, TRM_S1040_SCSI_FIFOCNT
) & 0x1f,
2324 (srb
->dcb
->sync_period
& WIDE_SYNC
) ?
2327 srb
->total_xfer_length
);
2328 if (srb
->dcb
->sync_period
& WIDE_SYNC
)
2329 DC395x_write8(acb
, TRM_S1040_SCSI_CONFIG2
,
2331 while (DC395x_read8(acb
, TRM_S1040_SCSI_FIFOCNT
) != 0x40) {
2332 u8 byte
= DC395x_read8(acb
, TRM_S1040_SCSI_FIFO
);
2334 *(srb
->virt_addr
)++ = byte
;
2335 if (debug_enabled(DBG_PIO
))
2336 printk(" %02x", byte
);
2338 sg_subtract_one(srb
);
2340 if (srb
->dcb
->sync_period
& WIDE_SYNC
) {
2342 /* Read the last byte ... */
2343 if (srb
->total_xfer_length
> 0) {
2344 u8 byte
= DC395x_read8(acb
, TRM_S1040_SCSI_FIFO
);
2346 *(srb
->virt_addr
)++ = byte
;
2347 srb
->total_xfer_length
--;
2348 if (debug_enabled(DBG_PIO
))
2349 printk(" %02x", byte
);
2352 DC395x_write8(acb
, TRM_S1040_SCSI_CONFIG2
, 0);
2354 /*printk(" %08x", *(u32*)(bus_to_virt (addr))); */
2355 /*srb->total_xfer_length = 0; */
2356 if (debug_enabled(DBG_PIO
))
2359 #endif /* DC395x_LASTPIO */
2363 * KG: This was in DATAOUT. Does it also belong here?
2364 * Nobody seems to know what counter and fifo_cnt count exactly ...
2366 if (!(scsi_status
& SCSIXFERDONE
)) {
2368 * when data transfer from DMA FIFO to SCSI FIFO
2369 * if there was some data left in SCSI FIFO
2372 (u32
)(DC395x_read8(acb
, TRM_S1040_SCSI_FIFOCNT
) &
2374 if (srb
->dcb
->sync_period
& WIDE_SYNC
)
2375 d_left_counter
<<= 1;
2377 * if WIDE scsi SCSI FIFOCNT unit is word !!!
2379 * KG: Seems to be correct ...
2383 /* KG: This should not be needed any more! */
2384 if (d_left_counter
== 0
2385 || (scsi_status
& SCSIXFERCNT_2_ZERO
)) {
2391 DC395x_read8(acb
, TRM_S1040_DMA_STATUS
);
2392 } while (!(TempDMAstatus
& DMAXFERCOMP
) && --ctr
);
2395 "Deadlock in DataInPhase0 waiting for DMA!!\n");
2396 srb
->total_xfer_length
= 0;
2398 srb
->total_xfer_length
= d_left_counter
;
2399 } else { /* phase changed */
2402 * when a transfer not yet complete
2403 * but be disconnected by target
2404 * if transfer not yet complete
2405 * there were some data residue in SCSI FIFO or
2406 * SCSI transfer counter not empty
2408 sg_update_list(srb
, d_left_counter
);
2411 /* KG: The target may decide to disconnect: Empty FIFO before! */
2412 if ((*pscsi_status
& PHASEMASK
) != PH_DATA_IN
) {
2413 cleanup_after_transfer(acb
, srb
);
2418 static void data_in_phase1(struct AdapterCtlBlk
*acb
, struct ScsiReqBlk
*srb
,
2421 dprintkdbg(DBG_0
, "data_in_phase1: (pid#%li) <%02i-%i>\n",
2422 srb
->cmd
->pid
, srb
->cmd
->device
->id
, srb
->cmd
->device
->lun
);
2423 data_io_transfer(acb
, srb
, XFERDATAIN
);
2427 static void data_io_transfer(struct AdapterCtlBlk
*acb
,
2428 struct ScsiReqBlk
*srb
, u16 io_dir
)
2430 struct DeviceCtlBlk
*dcb
= srb
->dcb
;
2433 "data_io_transfer: (pid#%li) <%02i-%i> %c len=%i, sg=(%i/%i)\n",
2434 srb
->cmd
->pid
, srb
->cmd
->device
->id
, srb
->cmd
->device
->lun
,
2435 ((io_dir
& DMACMD_DIR
) ? 'r' : 'w'),
2436 srb
->total_xfer_length
, srb
->sg_index
, srb
->sg_count
);
2437 if (srb
== acb
->tmp_srb
)
2438 dprintkl(KERN_ERR
, "data_io_transfer: Using tmp_srb!\n");
2439 if (srb
->sg_index
>= srb
->sg_count
) {
2440 /* can't happen? out of bounds error */
2444 if (srb
->total_xfer_length
> DC395x_LASTPIO
) {
2445 u8 dma_status
= DC395x_read8(acb
, TRM_S1040_DMA_STATUS
);
2447 * KG: What should we do: Use SCSI Cmd 0x90/0x92?
2448 * Maybe, even ABORTXFER would be appropriate
2450 if (dma_status
& XFERPENDING
) {
2451 dprintkl(KERN_DEBUG
, "data_io_transfer: Xfer pending! "
2452 "Expect trouble!\n");
2453 dump_register_info(acb
, dcb
, srb
);
2454 DC395x_write8(acb
, TRM_S1040_DMA_CONTROL
, CLRXFIFO
);
2456 /* clear_fifo(acb, "IO"); */
2458 * load what physical address of Scatter/Gather list table
2459 * want to be transfer
2461 srb
->state
|= SRB_DATA_XFER
;
2462 DC395x_write32(acb
, TRM_S1040_DMA_XHIGHADDR
, 0);
2463 if (srb
->cmd
->use_sg
) { /* with S/G */
2464 io_dir
|= DMACMD_SG
;
2465 DC395x_write32(acb
, TRM_S1040_DMA_XLOWADDR
,
2467 sizeof(struct SGentry
) *
2469 /* load how many bytes in the sg list table */
2470 DC395x_write32(acb
, TRM_S1040_DMA_XCNT
,
2471 ((u32
)(srb
->sg_count
-
2472 srb
->sg_index
) << 3));
2473 } else { /* without S/G */
2474 io_dir
&= ~DMACMD_SG
;
2475 DC395x_write32(acb
, TRM_S1040_DMA_XLOWADDR
,
2476 srb
->segment_x
[0].address
);
2477 DC395x_write32(acb
, TRM_S1040_DMA_XCNT
,
2478 srb
->segment_x
[0].length
);
2480 /* load total transfer length (24bits) max value 16Mbyte */
2481 DC395x_write32(acb
, TRM_S1040_SCSI_COUNTER
,
2482 srb
->total_xfer_length
);
2483 DC395x_write16(acb
, TRM_S1040_SCSI_CONTROL
, DO_DATALATCH
); /* it's important for atn stop */
2484 if (io_dir
& DMACMD_DIR
) { /* read */
2485 DC395x_write8(acb
, TRM_S1040_SCSI_COMMAND
,
2487 DC395x_write16(acb
, TRM_S1040_DMA_COMMAND
, io_dir
);
2489 DC395x_write16(acb
, TRM_S1040_DMA_COMMAND
, io_dir
);
2490 DC395x_write8(acb
, TRM_S1040_SCSI_COMMAND
,
2496 else if (srb
->total_xfer_length
> 0) { /* The last four bytes: Do PIO */
2498 * load what physical address of Scatter/Gather list table
2499 * want to be transfer
2501 srb
->state
|= SRB_DATA_XFER
;
2502 /* load total transfer length (24bits) max value 16Mbyte */
2503 DC395x_write32(acb
, TRM_S1040_SCSI_COUNTER
,
2504 srb
->total_xfer_length
);
2505 DC395x_write16(acb
, TRM_S1040_SCSI_CONTROL
, DO_DATALATCH
); /* it's important for atn stop */
2506 if (io_dir
& DMACMD_DIR
) { /* read */
2507 DC395x_write8(acb
, TRM_S1040_SCSI_COMMAND
,
2509 } else { /* write */
2510 int ln
= srb
->total_xfer_length
;
2511 if (srb
->dcb
->sync_period
& WIDE_SYNC
)
2512 DC395x_write8(acb
, TRM_S1040_SCSI_CONFIG2
,
2515 "data_io_transfer: PIO %i bytes from %p:",
2516 srb
->total_xfer_length
, srb
->virt_addr
);
2518 while (srb
->total_xfer_length
) {
2519 if (debug_enabled(DBG_PIO
))
2520 printk(" %02x", (unsigned char) *(srb
->virt_addr
));
2523 DC395x_write8(acb
, TRM_S1040_SCSI_FIFO
,
2524 *(srb
->virt_addr
)++);
2526 sg_subtract_one(srb
);
2528 if (srb
->dcb
->sync_period
& WIDE_SYNC
) {
2530 DC395x_write8(acb
, TRM_S1040_SCSI_FIFO
, 0);
2531 if (debug_enabled(DBG_PIO
))
2534 DC395x_write8(acb
, TRM_S1040_SCSI_CONFIG2
, 0);
2536 /*DC395x_write32(acb, TRM_S1040_SCSI_COUNTER, ln); */
2537 if (debug_enabled(DBG_PIO
))
2539 DC395x_write8(acb
, TRM_S1040_SCSI_COMMAND
,
2543 #endif /* DC395x_LASTPIO */
2544 else { /* xfer pad */
2545 u8 data
= 0, data2
= 0;
2546 if (srb
->sg_count
) {
2547 srb
->adapter_status
= H_OVER_UNDER_RUN
;
2548 srb
->status
|= OVER_RUN
;
2551 * KG: despite the fact that we are using 16 bits I/O ops
2552 * the SCSI FIFO is only 8 bits according to the docs
2553 * (we can set bit 1 in 0x8f to serialize FIFO access ...)
2555 if (dcb
->sync_period
& WIDE_SYNC
) {
2556 DC395x_write32(acb
, TRM_S1040_SCSI_COUNTER
, 2);
2557 DC395x_write8(acb
, TRM_S1040_SCSI_CONFIG2
,
2559 if (io_dir
& DMACMD_DIR
) {
2560 data
= DC395x_read8(acb
, TRM_S1040_SCSI_FIFO
);
2561 data2
= DC395x_read8(acb
, TRM_S1040_SCSI_FIFO
);
2563 /* Danger, Robinson: If you find KGs
2564 * scattered over the wide disk, the driver
2565 * or chip is to blame :-( */
2566 DC395x_write8(acb
, TRM_S1040_SCSI_FIFO
, 'K');
2567 DC395x_write8(acb
, TRM_S1040_SCSI_FIFO
, 'G');
2569 DC395x_write8(acb
, TRM_S1040_SCSI_CONFIG2
, 0);
2571 DC395x_write32(acb
, TRM_S1040_SCSI_COUNTER
, 1);
2572 /* Danger, Robinson: If you find a collection of Ks on your disk
2573 * something broke :-( */
2574 if (io_dir
& DMACMD_DIR
)
2575 data
= DC395x_read8(acb
, TRM_S1040_SCSI_FIFO
);
2577 DC395x_write8(acb
, TRM_S1040_SCSI_FIFO
, 'K');
2579 srb
->state
|= SRB_XFERPAD
;
2580 DC395x_write16(acb
, TRM_S1040_SCSI_CONTROL
, DO_DATALATCH
); /* it's important for atn stop */
2582 bval
= (io_dir
& DMACMD_DIR
) ? SCMD_FIFO_IN
: SCMD_FIFO_OUT
;
2583 DC395x_write8(acb
, TRM_S1040_SCSI_COMMAND
, bval
);
2588 static void status_phase0(struct AdapterCtlBlk
*acb
, struct ScsiReqBlk
*srb
,
2591 dprintkdbg(DBG_0
, "status_phase0: (pid#%li) <%02i-%i>\n",
2592 srb
->cmd
->pid
, srb
->cmd
->device
->id
, srb
->cmd
->device
->lun
);
2593 srb
->target_status
= DC395x_read8(acb
, TRM_S1040_SCSI_FIFO
);
2594 srb
->end_message
= DC395x_read8(acb
, TRM_S1040_SCSI_FIFO
); /* get message */
2595 srb
->state
= SRB_COMPLETED
;
2596 *pscsi_status
= PH_BUS_FREE
; /*.. initial phase */
2597 DC395x_write16(acb
, TRM_S1040_SCSI_CONTROL
, DO_DATALATCH
); /* it's important for atn stop */
2598 DC395x_write8(acb
, TRM_S1040_SCSI_COMMAND
, SCMD_MSGACCEPT
);
2602 static void status_phase1(struct AdapterCtlBlk
*acb
, struct ScsiReqBlk
*srb
,
2605 dprintkdbg(DBG_0
, "status_phase1: (pid#%li) <%02i-%i>\n",
2606 srb
->cmd
->pid
, srb
->cmd
->device
->id
, srb
->cmd
->device
->lun
);
2607 srb
->state
= SRB_STATUS
;
2608 DC395x_write16(acb
, TRM_S1040_SCSI_CONTROL
, DO_DATALATCH
); /* it's important for atn stop */
2609 DC395x_write8(acb
, TRM_S1040_SCSI_COMMAND
, SCMD_COMP
);
2613 /* Check if the message is complete */
2614 static inline u8
msgin_completed(u8
* msgbuf
, u32 len
)
2616 if (*msgbuf
== EXTENDED_MESSAGE
) {
2619 if (len
< msgbuf
[1] + 2)
2621 } else if (*msgbuf
>= 0x20 && *msgbuf
<= 0x2f) /* two byte messages */
2628 static inline void msgin_reject(struct AdapterCtlBlk
*acb
,
2629 struct ScsiReqBlk
*srb
)
2631 srb
->msgout_buf
[0] = MESSAGE_REJECT
;
2633 DC395x_ENABLE_MSGOUT
;
2634 srb
->state
&= ~SRB_MSGIN
;
2635 srb
->state
|= SRB_MSGOUT
;
2636 dprintkl(KERN_INFO
, "msgin_reject: 0x%02x <%02i-%i>\n",
2638 srb
->dcb
->target_id
, srb
->dcb
->target_lun
);
2642 static struct ScsiReqBlk
*msgin_qtag(struct AdapterCtlBlk
*acb
,
2643 struct DeviceCtlBlk
*dcb
, u8 tag
)
2645 struct ScsiReqBlk
*srb
= NULL
;
2646 struct ScsiReqBlk
*i
;
2647 dprintkdbg(DBG_0
, "msgin_qtag: (pid#%li) tag=%i srb=%p\n",
2648 srb
->cmd
->pid
, tag
, srb
);
2650 if (!(dcb
->tag_mask
& (1 << tag
)))
2651 dprintkl(KERN_DEBUG
,
2652 "msgin_qtag: tag_mask=0x%08x does not reserve tag %i!\n",
2653 dcb
->tag_mask
, tag
);
2655 if (list_empty(&dcb
->srb_going_list
))
2657 list_for_each_entry(i
, &dcb
->srb_going_list
, list
) {
2658 if (i
->tag_number
== tag
) {
2666 dprintkdbg(DBG_0
, "msgin_qtag: (pid#%li) <%02i-%i>\n",
2667 srb
->cmd
->pid
, srb
->dcb
->target_id
, srb
->dcb
->target_lun
);
2668 if (dcb
->flag
& ABORT_DEV_
) {
2669 /*srb->state = SRB_ABORT_SENT; */
2670 enable_msgout_abort(acb
, srb
);
2673 if (!(srb
->state
& SRB_DISCONNECT
))
2676 memcpy(srb
->msgin_buf
, dcb
->active_srb
->msgin_buf
, acb
->msg_len
);
2677 srb
->state
|= dcb
->active_srb
->state
;
2678 srb
->state
|= SRB_DATA_XFER
;
2679 dcb
->active_srb
= srb
;
2680 /* How can we make the DORS happy? */
2685 srb
->state
= SRB_UNEXPECT_RESEL
;
2686 dcb
->active_srb
= srb
;
2687 srb
->msgout_buf
[0] = MSG_ABORT_TAG
;
2689 DC395x_ENABLE_MSGOUT
;
2690 dprintkl(KERN_DEBUG
, "msgin_qtag: Unknown tag %i - abort\n", tag
);
2695 static inline void reprogram_regs(struct AdapterCtlBlk
*acb
,
2696 struct DeviceCtlBlk
*dcb
)
2698 DC395x_write8(acb
, TRM_S1040_SCSI_TARGETID
, dcb
->target_id
);
2699 DC395x_write8(acb
, TRM_S1040_SCSI_SYNC
, dcb
->sync_period
);
2700 DC395x_write8(acb
, TRM_S1040_SCSI_OFFSET
, dcb
->sync_offset
);
2701 set_xfer_rate(acb
, dcb
);
2705 /* set async transfer mode */
2706 static void msgin_set_async(struct AdapterCtlBlk
*acb
, struct ScsiReqBlk
*srb
)
2708 struct DeviceCtlBlk
*dcb
= srb
->dcb
;
2709 dprintkl(KERN_DEBUG
, "msgin_set_async: No sync transfers <%02i-%i>\n",
2710 dcb
->target_id
, dcb
->target_lun
);
2712 dcb
->sync_mode
&= ~(SYNC_NEGO_ENABLE
);
2713 dcb
->sync_mode
|= SYNC_NEGO_DONE
;
2714 /*dcb->sync_period &= 0; */
2715 dcb
->sync_offset
= 0;
2716 dcb
->min_nego_period
= 200 >> 2; /* 200ns <=> 5 MHz */
2717 srb
->state
&= ~SRB_DO_SYNC_NEGO
;
2718 reprogram_regs(acb
, dcb
);
2719 if ((dcb
->sync_mode
& WIDE_NEGO_ENABLE
)
2720 && !(dcb
->sync_mode
& WIDE_NEGO_DONE
)) {
2721 build_wdtr(acb
, dcb
, srb
);
2722 DC395x_ENABLE_MSGOUT
;
2723 dprintkdbg(DBG_0
, "msgin_set_async(rej): Try WDTR anyway\n");
2728 /* set sync transfer mode */
2729 static void msgin_set_sync(struct AdapterCtlBlk
*acb
, struct ScsiReqBlk
*srb
)
2731 struct DeviceCtlBlk
*dcb
= srb
->dcb
;
2734 dprintkdbg(DBG_1
, "msgin_set_sync: <%02i> Sync: %ins "
2735 "(%02i.%01i MHz) Offset %i\n",
2736 dcb
->target_id
, srb
->msgin_buf
[3] << 2,
2737 (250 / srb
->msgin_buf
[3]),
2738 ((250 % srb
->msgin_buf
[3]) * 10) / srb
->msgin_buf
[3],
2741 if (srb
->msgin_buf
[4] > 15)
2742 srb
->msgin_buf
[4] = 15;
2743 if (!(dcb
->dev_mode
& NTC_DO_SYNC_NEGO
))
2744 dcb
->sync_offset
= 0;
2745 else if (dcb
->sync_offset
== 0)
2746 dcb
->sync_offset
= srb
->msgin_buf
[4];
2747 if (srb
->msgin_buf
[4] > dcb
->sync_offset
)
2748 srb
->msgin_buf
[4] = dcb
->sync_offset
;
2750 dcb
->sync_offset
= srb
->msgin_buf
[4];
2752 while (bval
< 7 && (srb
->msgin_buf
[3] > clock_period
[bval
]
2753 || dcb
->min_nego_period
>
2754 clock_period
[bval
]))
2756 if (srb
->msgin_buf
[3] < clock_period
[bval
])
2758 "msgin_set_sync: Increase sync nego period to %ins\n",
2759 clock_period
[bval
] << 2);
2760 srb
->msgin_buf
[3] = clock_period
[bval
];
2761 dcb
->sync_period
&= 0xf0;
2762 dcb
->sync_period
|= ALT_SYNC
| bval
;
2763 dcb
->min_nego_period
= srb
->msgin_buf
[3];
2765 if (dcb
->sync_period
& WIDE_SYNC
)
2771 "Target %02i: %s Sync: %ins Offset %i (%02i.%01i MB/s)\n",
2772 dcb
->target_id
, (fact
== 500) ? "Wide16" : "",
2773 dcb
->min_nego_period
<< 2, dcb
->sync_offset
,
2774 (fact
/ dcb
->min_nego_period
),
2775 ((fact
% dcb
->min_nego_period
) * 10 +
2776 dcb
->min_nego_period
/ 2) / dcb
->min_nego_period
);
2778 if (!(srb
->state
& SRB_DO_SYNC_NEGO
)) {
2779 /* Reply with corrected SDTR Message */
2780 dprintkl(KERN_DEBUG
, "msgin_set_sync: answer w/%ins %i\n",
2781 srb
->msgin_buf
[3] << 2, srb
->msgin_buf
[4]);
2783 memcpy(srb
->msgout_buf
, srb
->msgin_buf
, 5);
2785 DC395x_ENABLE_MSGOUT
;
2786 dcb
->sync_mode
|= SYNC_NEGO_DONE
;
2788 if ((dcb
->sync_mode
& WIDE_NEGO_ENABLE
)
2789 && !(dcb
->sync_mode
& WIDE_NEGO_DONE
)) {
2790 build_wdtr(acb
, dcb
, srb
);
2791 DC395x_ENABLE_MSGOUT
;
2792 dprintkdbg(DBG_0
, "msgin_set_sync: Also try WDTR\n");
2795 srb
->state
&= ~SRB_DO_SYNC_NEGO
;
2796 dcb
->sync_mode
|= SYNC_NEGO_DONE
| SYNC_NEGO_ENABLE
;
2798 reprogram_regs(acb
, dcb
);
2802 static inline void msgin_set_nowide(struct AdapterCtlBlk
*acb
,
2803 struct ScsiReqBlk
*srb
)
2805 struct DeviceCtlBlk
*dcb
= srb
->dcb
;
2806 dprintkdbg(DBG_1
, "msgin_set_nowide: <%02i>\n", dcb
->target_id
);
2808 dcb
->sync_period
&= ~WIDE_SYNC
;
2809 dcb
->sync_mode
&= ~(WIDE_NEGO_ENABLE
);
2810 dcb
->sync_mode
|= WIDE_NEGO_DONE
;
2811 srb
->state
&= ~SRB_DO_WIDE_NEGO
;
2812 reprogram_regs(acb
, dcb
);
2813 if ((dcb
->sync_mode
& SYNC_NEGO_ENABLE
)
2814 && !(dcb
->sync_mode
& SYNC_NEGO_DONE
)) {
2815 build_sdtr(acb
, dcb
, srb
);
2816 DC395x_ENABLE_MSGOUT
;
2817 dprintkdbg(DBG_0
, "msgin_set_nowide: Rejected. Try SDTR anyway\n");
2821 static void msgin_set_wide(struct AdapterCtlBlk
*acb
, struct ScsiReqBlk
*srb
)
2823 struct DeviceCtlBlk
*dcb
= srb
->dcb
;
2824 u8 wide
= (dcb
->dev_mode
& NTC_DO_WIDE_NEGO
2825 && acb
->config
& HCC_WIDE_CARD
) ? 1 : 0;
2826 dprintkdbg(DBG_1
, "msgin_set_wide: <%02i>\n", dcb
->target_id
);
2828 if (srb
->msgin_buf
[3] > wide
)
2829 srb
->msgin_buf
[3] = wide
;
2831 if (!(srb
->state
& SRB_DO_WIDE_NEGO
)) {
2832 dprintkl(KERN_DEBUG
,
2833 "msgin_set_wide: Wide nego initiated <%02i>\n",
2835 memcpy(srb
->msgout_buf
, srb
->msgin_buf
, 4);
2837 srb
->state
|= SRB_DO_WIDE_NEGO
;
2838 DC395x_ENABLE_MSGOUT
;
2841 dcb
->sync_mode
|= (WIDE_NEGO_ENABLE
| WIDE_NEGO_DONE
);
2842 if (srb
->msgin_buf
[3] > 0)
2843 dcb
->sync_period
|= WIDE_SYNC
;
2845 dcb
->sync_period
&= ~WIDE_SYNC
;
2846 srb
->state
&= ~SRB_DO_WIDE_NEGO
;
2847 /*dcb->sync_mode &= ~(WIDE_NEGO_ENABLE+WIDE_NEGO_DONE); */
2849 "msgin_set_wide: Wide (%i bit) negotiated <%02i>\n",
2850 (8 << srb
->msgin_buf
[3]), dcb
->target_id
);
2851 reprogram_regs(acb
, dcb
);
2852 if ((dcb
->sync_mode
& SYNC_NEGO_ENABLE
)
2853 && !(dcb
->sync_mode
& SYNC_NEGO_DONE
)) {
2854 build_sdtr(acb
, dcb
, srb
);
2855 DC395x_ENABLE_MSGOUT
;
2856 dprintkdbg(DBG_0
, "msgin_set_wide: Also try SDTR.\n");
2862 * extended message codes:
2867 * 00h MODIFY DATA POINTER
2868 * 01h SYNCHRONOUS DATA TRANSFER REQUEST
2869 * 03h WIDE DATA TRANSFER REQUEST
2870 * 04h - 7Fh Reserved
2871 * 80h - FFh Vendor specific
2873 static void msgin_phase0(struct AdapterCtlBlk
*acb
, struct ScsiReqBlk
*srb
,
2876 struct DeviceCtlBlk
*dcb
= acb
->active_dcb
;
2877 dprintkdbg(DBG_0
, "msgin_phase0: (pid#%li)\n", srb
->cmd
->pid
);
2879 srb
->msgin_buf
[acb
->msg_len
++] = DC395x_read8(acb
, TRM_S1040_SCSI_FIFO
);
2880 if (msgin_completed(srb
->msgin_buf
, acb
->msg_len
)) {
2881 /* Now eval the msg */
2882 switch (srb
->msgin_buf
[0]) {
2884 srb
->state
= SRB_DISCONNECT
;
2887 case SIMPLE_QUEUE_TAG
:
2888 case HEAD_OF_QUEUE_TAG
:
2889 case ORDERED_QUEUE_TAG
:
2891 msgin_qtag(acb
, dcb
,
2895 case MESSAGE_REJECT
:
2896 DC395x_write16(acb
, TRM_S1040_SCSI_CONTROL
,
2897 DO_CLRATN
| DO_DATALATCH
);
2898 /* A sync nego message was rejected ! */
2899 if (srb
->state
& SRB_DO_SYNC_NEGO
) {
2900 msgin_set_async(acb
, srb
);
2903 /* A wide nego message was rejected ! */
2904 if (srb
->state
& SRB_DO_WIDE_NEGO
) {
2905 msgin_set_nowide(acb
, srb
);
2908 enable_msgout_abort(acb
, srb
);
2909 /*srb->state |= SRB_ABORT_SENT */
2912 case EXTENDED_MESSAGE
:
2914 if (srb
->msgin_buf
[1] == 3
2915 && srb
->msgin_buf
[2] == EXTENDED_SDTR
) {
2916 msgin_set_sync(acb
, srb
);
2920 if (srb
->msgin_buf
[1] == 2
2921 && srb
->msgin_buf
[2] == EXTENDED_WDTR
2922 && srb
->msgin_buf
[3] <= 2) { /* sanity check ... */
2923 msgin_set_wide(acb
, srb
);
2926 msgin_reject(acb
, srb
);
2929 case MSG_IGNOREWIDE
:
2930 /* Discard wide residual */
2931 dprintkdbg(DBG_0
, "msgin_phase0: Ignore Wide Residual!\n");
2934 case COMMAND_COMPLETE
:
2935 /* nothing has to be done */
2940 * SAVE POINTER may be ignored as we have the struct
2941 * ScsiReqBlk* associated with the scsi command.
2943 dprintkdbg(DBG_0
, "msgin_phase0: (pid#%li) "
2944 "SAVE POINTER rem=%i Ignore\n",
2945 srb
->cmd
->pid
, srb
->total_xfer_length
);
2948 case RESTORE_POINTERS
:
2949 dprintkdbg(DBG_0
, "msgin_phase0: RESTORE POINTER. Ignore\n");
2953 dprintkdbg(DBG_0
, "msgin_phase0: (pid#%li) "
2954 "<%02i-%i> ABORT msg\n",
2955 srb
->cmd
->pid
, dcb
->target_id
,
2957 dcb
->flag
|= ABORT_DEV_
;
2958 enable_msgout_abort(acb
, srb
);
2962 /* reject unknown messages */
2963 if (srb
->msgin_buf
[0] & IDENTIFY_BASE
) {
2964 dprintkdbg(DBG_0
, "msgin_phase0: Identify msg\n");
2966 srb
->msgout_buf
[0] = dcb
->identify_msg
;
2967 DC395x_ENABLE_MSGOUT
;
2968 srb
->state
|= SRB_MSGOUT
;
2971 msgin_reject(acb
, srb
);
2974 /* Clear counter and MsgIn state */
2975 srb
->state
&= ~SRB_MSGIN
;
2978 *pscsi_status
= PH_BUS_FREE
;
2979 DC395x_write16(acb
, TRM_S1040_SCSI_CONTROL
, DO_DATALATCH
); /* it's important ... you know! */
2980 DC395x_write8(acb
, TRM_S1040_SCSI_COMMAND
, SCMD_MSGACCEPT
);
2984 static void msgin_phase1(struct AdapterCtlBlk
*acb
, struct ScsiReqBlk
*srb
,
2987 dprintkdbg(DBG_0
, "msgin_phase1: (pid#%li)\n", srb
->cmd
->pid
);
2988 clear_fifo(acb
, "msgin_phase1");
2989 DC395x_write32(acb
, TRM_S1040_SCSI_COUNTER
, 1);
2990 if (!(srb
->state
& SRB_MSGIN
)) {
2991 srb
->state
&= ~SRB_DISCONNECT
;
2992 srb
->state
|= SRB_MSGIN
;
2994 DC395x_write16(acb
, TRM_S1040_SCSI_CONTROL
, DO_DATALATCH
); /* it's important for atn stop */
2996 DC395x_write8(acb
, TRM_S1040_SCSI_COMMAND
, SCMD_FIFO_IN
);
3000 static void nop0(struct AdapterCtlBlk
*acb
, struct ScsiReqBlk
*srb
,
3006 static void nop1(struct AdapterCtlBlk
*acb
, struct ScsiReqBlk
*srb
,
3012 static void set_xfer_rate(struct AdapterCtlBlk
*acb
, struct DeviceCtlBlk
*dcb
)
3014 struct DeviceCtlBlk
*i
;
3016 /* set all lun device's period, offset */
3017 if (dcb
->identify_msg
& 0x07)
3020 if (acb
->scan_devices
) {
3021 current_sync_offset
= dcb
->sync_offset
;
3025 list_for_each_entry(i
, &acb
->dcb_list
, list
)
3026 if (i
->target_id
== dcb
->target_id
) {
3027 i
->sync_period
= dcb
->sync_period
;
3028 i
->sync_offset
= dcb
->sync_offset
;
3029 i
->sync_mode
= dcb
->sync_mode
;
3030 i
->min_nego_period
= dcb
->min_nego_period
;
3035 static void disconnect(struct AdapterCtlBlk
*acb
)
3037 struct DeviceCtlBlk
*dcb
= acb
->active_dcb
;
3038 struct ScsiReqBlk
*srb
;
3041 dprintkl(KERN_ERR
, "disconnect: No such device\n");
3043 /* Suspend queue for a while */
3044 acb
->scsi_host
->last_reset
=
3046 HZ
* acb
->eeprom
.delay_time
;
3047 clear_fifo(acb
, "disconnectEx");
3048 DC395x_write16(acb
, TRM_S1040_SCSI_CONTROL
, DO_HWRESELECT
);
3051 srb
= dcb
->active_srb
;
3052 acb
->active_dcb
= NULL
;
3053 dprintkdbg(DBG_0
, "disconnect: (pid#%li)\n", srb
->cmd
->pid
);
3055 srb
->scsi_phase
= PH_BUS_FREE
; /* initial phase */
3056 clear_fifo(acb
, "disconnect");
3057 DC395x_write16(acb
, TRM_S1040_SCSI_CONTROL
, DO_HWRESELECT
);
3058 if (srb
->state
& SRB_UNEXPECT_RESEL
) {
3060 "disconnect: Unexpected reselection <%02i-%i>\n",
3061 dcb
->target_id
, dcb
->target_lun
);
3063 waiting_process_next(acb
);
3064 } else if (srb
->state
& SRB_ABORT_SENT
) {
3065 dcb
->flag
&= ~ABORT_DEV_
;
3066 acb
->scsi_host
->last_reset
= jiffies
+ HZ
/ 2 + 1;
3067 dprintkl(KERN_ERR
, "disconnect: SRB_ABORT_SENT\n");
3068 doing_srb_done(acb
, DID_ABORT
, srb
->cmd
, 1);
3069 waiting_process_next(acb
);
3071 if ((srb
->state
& (SRB_START_
+ SRB_MSGOUT
))
3073 state
& (SRB_DISCONNECT
+ SRB_COMPLETED
))) {
3075 * Selection time out
3076 * SRB_START_ || SRB_MSGOUT || (!SRB_DISCONNECT && !SRB_COMPLETED)
3078 /* Unexp. Disc / Sel Timeout */
3079 if (srb
->state
!= SRB_START_
3080 && srb
->state
!= SRB_MSGOUT
) {
3081 srb
->state
= SRB_READY
;
3082 dprintkl(KERN_DEBUG
,
3083 "disconnect: (pid#%li) Unexpected\n",
3085 srb
->target_status
= SCSI_STAT_SEL_TIMEOUT
;
3088 /* Normal selection timeout */
3089 dprintkdbg(DBG_KG
, "disconnect: (pid#%li) "
3090 "<%02i-%i> SelTO\n", srb
->cmd
->pid
,
3091 dcb
->target_id
, dcb
->target_lun
);
3092 if (srb
->retry_count
++ > DC395x_MAX_RETRIES
3093 || acb
->scan_devices
) {
3094 srb
->target_status
=
3095 SCSI_STAT_SEL_TIMEOUT
;
3099 srb_going_to_waiting_move(dcb
, srb
);
3101 "disconnect: (pid#%li) Retry\n",
3103 waiting_set_timer(acb
, HZ
/ 20);
3105 } else if (srb
->state
& SRB_DISCONNECT
) {
3106 u8 bval
= DC395x_read8(acb
, TRM_S1040_SCSI_SIGNAL
);
3108 * SRB_DISCONNECT (This is what we expect!)
3111 dprintkdbg(DBG_0
, "disconnect: SCSI bus stat "
3112 " 0x%02x: ACK set! Other controllers?\n",
3114 /* It could come from another initiator, therefore don't do much ! */
3116 waiting_process_next(acb
);
3117 } else if (srb
->state
& SRB_COMPLETED
) {
3123 dcb
->active_srb
= NULL
;
3124 srb
->state
= SRB_FREE
;
3125 srb_done(acb
, dcb
, srb
);
3131 static void reselect(struct AdapterCtlBlk
*acb
)
3133 struct DeviceCtlBlk
*dcb
= acb
->active_dcb
;
3134 struct ScsiReqBlk
*srb
= NULL
;
3135 u16 rsel_tar_lun_id
;
3138 dprintkdbg(DBG_0
, "reselect: acb=%p\n", acb
);
3140 clear_fifo(acb
, "reselect");
3141 /*DC395x_write16(acb, TRM_S1040_SCSI_CONTROL, DO_HWRESELECT | DO_DATALATCH); */
3142 /* Read Reselected Target ID and LUN */
3143 rsel_tar_lun_id
= DC395x_read16(acb
, TRM_S1040_SCSI_TARGETID
);
3144 if (dcb
) { /* Arbitration lost but Reselection win */
3145 srb
= dcb
->active_srb
;
3147 dprintkl(KERN_DEBUG
, "reselect: Arb lost Resel won, "
3148 "but active_srb == NULL\n");
3149 DC395x_write16(acb
, TRM_S1040_SCSI_CONTROL
, DO_DATALATCH
); /* it's important for atn stop */
3153 if (!acb
->scan_devices
) {
3154 dprintkdbg(DBG_KG
, "reselect: (pid#%li) <%02i-%i> "
3155 "Arb lost but Resel win rsel=%i stat=0x%04x\n",
3156 srb
->cmd
->pid
, dcb
->target_id
,
3157 dcb
->target_lun
, rsel_tar_lun_id
,
3158 DC395x_read16(acb
, TRM_S1040_SCSI_STATUS
));
3160 /*srb->state |= SRB_DISCONNECT; */
3162 srb
->state
= SRB_READY
;
3164 srb_going_to_waiting_move(dcb
, srb
);
3165 waiting_set_timer(acb
, HZ
/ 20);
3170 /* Read Reselected Target Id and LUN */
3171 if (!(rsel_tar_lun_id
& (IDENTIFY_BASE
<< 8)))
3172 dprintkl(KERN_DEBUG
, "reselect: Expects identify msg. "
3173 "Got %i!\n", rsel_tar_lun_id
);
3174 id
= rsel_tar_lun_id
& 0xff;
3175 lun
= (rsel_tar_lun_id
>> 8) & 7;
3176 dcb
= find_dcb(acb
, id
, lun
);
3178 dprintkl(KERN_ERR
, "reselect: From non existent device "
3179 "<%02i-%i>\n", id
, lun
);
3180 DC395x_write16(acb
, TRM_S1040_SCSI_CONTROL
, DO_DATALATCH
); /* it's important for atn stop */
3183 acb
->active_dcb
= dcb
;
3185 if (!(dcb
->dev_mode
& NTC_DO_DISCONNECT
))
3186 dprintkl(KERN_DEBUG
, "reselect: in spite of forbidden "
3187 "disconnection? <%02i-%i>\n",
3188 dcb
->target_id
, dcb
->target_lun
);
3190 if (dcb
->sync_mode
& EN_TAG_QUEUEING
/*&& !arblostflag */) {
3192 dcb
->active_srb
= srb
;
3194 /* There can be only one! */
3195 srb
= dcb
->active_srb
;
3196 if (!srb
|| !(srb
->state
& SRB_DISCONNECT
)) {
3200 dprintkl(KERN_DEBUG
,
3201 "reselect: w/o disconnected cmds <%02i-%i>\n",
3202 dcb
->target_id
, dcb
->target_lun
);
3204 srb
->state
= SRB_UNEXPECT_RESEL
;
3205 dcb
->active_srb
= srb
;
3206 enable_msgout_abort(acb
, srb
);
3208 if (dcb
->flag
& ABORT_DEV_
) {
3209 /*srb->state = SRB_ABORT_SENT; */
3210 enable_msgout_abort(acb
, srb
);
3212 srb
->state
= SRB_DATA_XFER
;
3216 srb
->scsi_phase
= PH_BUS_FREE
; /* initial phase */
3218 /* Program HA ID, target ID, period and offset */
3219 dprintkdbg(DBG_0
, "reselect: select <%i>\n", dcb
->target_id
);
3220 DC395x_write8(acb
, TRM_S1040_SCSI_HOSTID
, acb
->scsi_host
->this_id
); /* host ID */
3221 DC395x_write8(acb
, TRM_S1040_SCSI_TARGETID
, dcb
->target_id
); /* target ID */
3222 DC395x_write8(acb
, TRM_S1040_SCSI_OFFSET
, dcb
->sync_offset
); /* offset */
3223 DC395x_write8(acb
, TRM_S1040_SCSI_SYNC
, dcb
->sync_period
); /* sync period, wide */
3224 DC395x_write16(acb
, TRM_S1040_SCSI_CONTROL
, DO_DATALATCH
); /* it's important for atn stop */
3226 DC395x_write8(acb
, TRM_S1040_SCSI_COMMAND
, SCMD_MSGACCEPT
);
3230 static inline u8
tagq_blacklist(char *name
)
3232 #ifndef DC395x_NO_TAGQ
3235 for (i
= 0; i
< BADDEVCNT
; i
++)
3236 if (memcmp(name
, DC395x_baddevname1
[i
], 28) == 0)
3246 static void disc_tagq_set(struct DeviceCtlBlk
*dcb
, struct ScsiInqData
*ptr
)
3248 /* Check for SCSI format (ANSI and Response data format) */
3249 if ((ptr
->Vers
& 0x07) >= 2 || (ptr
->RDF
& 0x0F) == 2) {
3250 if ((ptr
->Flags
& SCSI_INQ_CMDQUEUE
)
3251 && (dcb
->dev_mode
& NTC_DO_TAG_QUEUEING
) &&
3252 /*(dcb->dev_mode & NTC_DO_DISCONNECT) */
3253 /* ((dcb->dev_type == TYPE_DISK)
3254 || (dcb->dev_type == TYPE_MOD)) && */
3255 !tagq_blacklist(((char *)ptr
) + 8)) {
3256 if (dcb
->max_command
== 1)
3258 dcb
->acb
->tag_max_num
;
3259 dcb
->sync_mode
|= EN_TAG_QUEUEING
;
3260 /*dcb->tag_mask = 0; */
3262 dcb
->max_command
= 1;
3267 static void add_dev(struct AdapterCtlBlk
*acb
, struct DeviceCtlBlk
*dcb
,
3268 struct ScsiInqData
*ptr
)
3270 u8 bval1
= ptr
->DevType
& SCSI_DEVTYPE
;
3271 dcb
->dev_type
= bval1
;
3272 /* if (bval1 == TYPE_DISK || bval1 == TYPE_MOD) */
3273 disc_tagq_set(dcb
, ptr
);
3277 /* unmap mapped pci regions from SRB */
3278 static void pci_unmap_srb(struct AdapterCtlBlk
*acb
, struct ScsiReqBlk
*srb
)
3280 struct scsi_cmnd
*cmd
= srb
->cmd
;
3281 enum dma_data_direction dir
= cmd
->sc_data_direction
;
3282 if (cmd
->use_sg
&& dir
!= PCI_DMA_NONE
) {
3283 /* unmap DC395x SG list */
3284 dprintkdbg(DBG_SG
, "pci_unmap_srb: list=%08x(%05x)\n",
3285 srb
->sg_bus_addr
, SEGMENTX_LEN
);
3286 pci_unmap_single(acb
->dev
, srb
->sg_bus_addr
,
3289 dprintkdbg(DBG_SG
, "pci_unmap_srb: segs=%i buffer=%p\n",
3290 cmd
->use_sg
, cmd
->request_buffer
);
3291 /* unmap the sg segments */
3292 pci_unmap_sg(acb
->dev
,
3293 (struct scatterlist
*)cmd
->request_buffer
,
3295 } else if (cmd
->request_buffer
&& dir
!= PCI_DMA_NONE
) {
3296 dprintkdbg(DBG_SG
, "pci_unmap_srb: buffer=%08x(%05x)\n",
3297 srb
->segment_x
[0].address
, cmd
->request_bufflen
);
3298 pci_unmap_single(acb
->dev
, srb
->segment_x
[0].address
,
3299 cmd
->request_bufflen
, dir
);
3304 /* unmap mapped pci sense buffer from SRB */
3305 static void pci_unmap_srb_sense(struct AdapterCtlBlk
*acb
,
3306 struct ScsiReqBlk
*srb
)
3308 if (!(srb
->flag
& AUTO_REQSENSE
))
3310 /* Unmap sense buffer */
3311 dprintkdbg(DBG_SG
, "pci_unmap_srb_sense: buffer=%08x\n",
3312 srb
->segment_x
[0].address
);
3313 pci_unmap_single(acb
->dev
, srb
->segment_x
[0].address
,
3314 srb
->segment_x
[0].length
, PCI_DMA_FROMDEVICE
);
3315 /* Restore SG stuff */
3316 srb
->total_xfer_length
= srb
->xferred
;
3317 srb
->segment_x
[0].address
=
3318 srb
->segment_x
[DC395x_MAX_SG_LISTENTRY
- 1].address
;
3319 srb
->segment_x
[0].length
=
3320 srb
->segment_x
[DC395x_MAX_SG_LISTENTRY
- 1].length
;
3325 * Complete execution of a SCSI command
3326 * Signal completion to the generic SCSI driver
3328 static void srb_done(struct AdapterCtlBlk
*acb
, struct DeviceCtlBlk
*dcb
,
3329 struct ScsiReqBlk
*srb
)
3332 struct scsi_cmnd
*cmd
= srb
->cmd
;
3333 struct ScsiInqData
*ptr
;
3334 enum dma_data_direction dir
= cmd
->sc_data_direction
;
3337 struct scatterlist
* sg
= (struct scatterlist
*)cmd
->request_buffer
;
3338 ptr
= (struct ScsiInqData
*)(page_address(sg
->page
) + sg
->offset
);
3340 ptr
= (struct ScsiInqData
*)(cmd
->request_buffer
);
3343 dprintkdbg(DBG_1
, "srb_done: (pid#%li) <%02i-%i>\n", srb
->cmd
->pid
,
3344 srb
->cmd
->device
->id
, srb
->cmd
->device
->lun
);
3345 dprintkdbg(DBG_SG
, "srb_done: srb=%p sg=%i(%i/%i) buf=%p addr=%p\n",
3346 srb
, cmd
->use_sg
, srb
->sg_index
, srb
->sg_count
,
3347 cmd
->request_buffer
, ptr
);
3348 status
= srb
->target_status
;
3349 if (srb
->flag
& AUTO_REQSENSE
) {
3350 dprintkdbg(DBG_0
, "srb_done: AUTO_REQSENSE1\n");
3351 pci_unmap_srb_sense(acb
, srb
);
3353 ** target status..........................
3355 srb
->flag
&= ~AUTO_REQSENSE
;
3356 srb
->adapter_status
= 0;
3357 srb
->target_status
= CHECK_CONDITION
<< 1;
3358 if (debug_enabled(DBG_1
)) {
3359 switch (cmd
->sense_buffer
[2] & 0x0f) {
3361 dprintkl(KERN_DEBUG
,
3362 "ReqSense: NOT_READY cmnd=0x%02x <%02i-%i> stat=%i scan=%i ",
3363 cmd
->cmnd
[0], dcb
->target_id
,
3364 dcb
->target_lun
, status
, acb
->scan_devices
);
3366 case UNIT_ATTENTION
:
3367 dprintkl(KERN_DEBUG
,
3368 "ReqSense: UNIT_ATTENTION cmnd=0x%02x <%02i-%i> stat=%i scan=%i ",
3369 cmd
->cmnd
[0], dcb
->target_id
,
3370 dcb
->target_lun
, status
, acb
->scan_devices
);
3372 case ILLEGAL_REQUEST
:
3373 dprintkl(KERN_DEBUG
,
3374 "ReqSense: ILLEGAL_REQUEST cmnd=0x%02x <%02i-%i> stat=%i scan=%i ",
3375 cmd
->cmnd
[0], dcb
->target_id
,
3376 dcb
->target_lun
, status
, acb
->scan_devices
);
3379 dprintkl(KERN_DEBUG
,
3380 "ReqSense: MEDIUM_ERROR cmnd=0x%02x <%02i-%i> stat=%i scan=%i ",
3381 cmd
->cmnd
[0], dcb
->target_id
,
3382 dcb
->target_lun
, status
, acb
->scan_devices
);
3384 case HARDWARE_ERROR
:
3385 dprintkl(KERN_DEBUG
,
3386 "ReqSense: HARDWARE_ERROR cmnd=0x%02x <%02i-%i> stat=%i scan=%i ",
3387 cmd
->cmnd
[0], dcb
->target_id
,
3388 dcb
->target_lun
, status
, acb
->scan_devices
);
3391 if (cmd
->sense_buffer
[7] >= 6)
3392 printk("sense=0x%02x ASC=0x%02x ASCQ=0x%02x "
3393 "(0x%08x 0x%08x)\n",
3394 cmd
->sense_buffer
[2], cmd
->sense_buffer
[12],
3395 cmd
->sense_buffer
[13],
3396 *((unsigned int *)(cmd
->sense_buffer
+ 3)),
3397 *((unsigned int *)(cmd
->sense_buffer
+ 8)));
3399 printk("sense=0x%02x No ASC/ASCQ (0x%08x)\n",
3400 cmd
->sense_buffer
[2],
3401 *((unsigned int *)(cmd
->sense_buffer
+ 3)));
3404 if (status
== (CHECK_CONDITION
<< 1)) {
3405 cmd
->result
= DID_BAD_TARGET
<< 16;
3408 dprintkdbg(DBG_0
, "srb_done: AUTO_REQSENSE2\n");
3410 if (srb
->total_xfer_length
3411 && srb
->total_xfer_length
>= cmd
->underflow
)
3413 MK_RES_LNX(DRIVER_SENSE
, DID_OK
,
3414 srb
->end_message
, CHECK_CONDITION
);
3415 /*SET_RES_DID(cmd->result,DID_OK) */
3418 MK_RES_LNX(DRIVER_SENSE
, DID_OK
,
3419 srb
->end_message
, CHECK_CONDITION
);
3424 /*************************************************************/
3427 * target status..........................
3429 if (status_byte(status
) == CHECK_CONDITION
) {
3430 request_sense(acb
, dcb
, srb
);
3432 } else if (status_byte(status
) == QUEUE_FULL
) {
3433 tempcnt
= (u8
)list_size(&dcb
->srb_going_list
);
3434 dprintkl(KERN_INFO
, "QUEUE_FULL for dev <%02i-%i> with %i cmnds\n",
3435 dcb
->target_id
, dcb
->target_lun
, tempcnt
);
3438 dcb
->max_command
= tempcnt
;
3440 srb_going_to_waiting_move(dcb
, srb
);
3441 waiting_set_timer(acb
, HZ
/ 20);
3442 srb
->adapter_status
= 0;
3443 srb
->target_status
= 0;
3445 } else if (status
== SCSI_STAT_SEL_TIMEOUT
) {
3446 srb
->adapter_status
= H_SEL_TIMEOUT
;
3447 srb
->target_status
= 0;
3448 cmd
->result
= DID_NO_CONNECT
<< 16;
3450 srb
->adapter_status
= 0;
3451 SET_RES_DID(cmd
->result
, DID_ERROR
);
3452 SET_RES_MSG(cmd
->result
, srb
->end_message
);
3453 SET_RES_TARGET(cmd
->result
, status
);
3458 ** process initiator status..........................
3460 status
= srb
->adapter_status
;
3461 if (status
& H_OVER_UNDER_RUN
) {
3462 srb
->target_status
= 0;
3463 SET_RES_DID(cmd
->result
, DID_OK
);
3464 SET_RES_MSG(cmd
->result
, srb
->end_message
);
3465 } else if (srb
->status
& PARITY_ERROR
) {
3466 SET_RES_DID(cmd
->result
, DID_PARITY
);
3467 SET_RES_MSG(cmd
->result
, srb
->end_message
);
3468 } else { /* No error */
3470 srb
->adapter_status
= 0;
3471 srb
->target_status
= 0;
3472 SET_RES_DID(cmd
->result
, DID_OK
);
3476 if (dir
!= PCI_DMA_NONE
) {
3478 pci_dma_sync_sg_for_cpu(acb
->dev
,
3479 (struct scatterlist
*)cmd
->
3480 request_buffer
, cmd
->use_sg
, dir
);
3481 else if (cmd
->request_buffer
)
3482 pci_dma_sync_single_for_cpu(acb
->dev
,
3483 srb
->segment_x
[0].address
,
3484 cmd
->request_bufflen
, dir
);
3487 if ((cmd
->result
& RES_DID
) == 0 && cmd
->cmnd
[0] == INQUIRY
3488 && cmd
->cmnd
[2] == 0 && cmd
->request_bufflen
>= 8
3489 && dir
!= PCI_DMA_NONE
&& ptr
&& (ptr
->Vers
& 0x07) >= 2)
3490 dcb
->inquiry7
= ptr
->Flags
;
3491 /* Check Error Conditions */
3494 /*if( srb->cmd->cmnd[0] == INQUIRY && */
3495 /* (host_byte(cmd->result) == DID_OK || status_byte(cmd->result) & CHECK_CONDITION) ) */
3496 if (cmd
->cmnd
[0] == INQUIRY
&& (cmd
->result
== (DID_OK
<< 16)
3497 || status_byte(cmd
->
3501 if (!dcb
->init_tcq_flag
) {
3502 add_dev(acb
, dcb
, ptr
);
3503 dcb
->init_tcq_flag
= 1;
3509 /* Here is the info for Doug Gilbert's sg3 ... */
3510 cmd
->resid
= srb
->total_xfer_length
;
3511 /* This may be interpreted by sb. or not ... */
3512 cmd
->SCp
.this_residual
= srb
->total_xfer_length
;
3513 cmd
->SCp
.buffers_residual
= 0;
3514 if (debug_enabled(DBG_KG
)) {
3515 if (srb
->total_xfer_length
)
3516 dprintkdbg(DBG_KG
, "srb_done: (pid#%li) <%02i-%i> "
3517 "cmnd=0x%02x Missed %i bytes\n",
3518 cmd
->pid
, cmd
->device
->id
, cmd
->device
->lun
,
3519 cmd
->cmnd
[0], srb
->total_xfer_length
);
3522 srb_going_remove(dcb
, srb
);
3523 /* Add to free list */
3524 if (srb
== acb
->tmp_srb
)
3525 dprintkl(KERN_ERR
, "srb_done: ERROR! Completed cmd with tmp_srb\n");
3527 dprintkdbg(DBG_0
, "srb_done: (pid#%li) done result=0x%08x\n",
3528 cmd
->pid
, cmd
->result
);
3529 srb_free_insert(acb
, srb
);
3531 pci_unmap_srb(acb
, srb
);
3533 cmd
->scsi_done(cmd
);
3534 waiting_process_next(acb
);
3538 /* abort all cmds in our queues */
3539 static void doing_srb_done(struct AdapterCtlBlk
*acb
, u8 did_flag
,
3540 struct scsi_cmnd
*cmd
, u8 force
)
3542 struct DeviceCtlBlk
*dcb
;
3543 dprintkl(KERN_INFO
, "doing_srb_done: pids ");
3545 list_for_each_entry(dcb
, &acb
->dcb_list
, list
) {
3546 struct ScsiReqBlk
*srb
;
3547 struct ScsiReqBlk
*tmp
;
3548 struct scsi_cmnd
*p
;
3550 list_for_each_entry_safe(srb
, tmp
, &dcb
->srb_going_list
, list
) {
3551 enum dma_data_direction dir
;
3555 dir
= p
->sc_data_direction
;
3556 result
= MK_RES(0, did_flag
, 0, 0);
3557 printk("G:%li(%02i-%i) ", p
->pid
,
3558 p
->device
->id
, p
->device
->lun
);
3559 srb_going_remove(dcb
, srb
);
3561 srb_free_insert(acb
, srb
);
3563 pci_unmap_srb_sense(acb
, srb
);
3564 pci_unmap_srb(acb
, srb
);
3566 /* For new EH, we normally don't need to give commands back,
3567 * as they all complete or all time out */
3571 if (!list_empty(&dcb
->srb_going_list
))
3572 dprintkl(KERN_DEBUG
,
3573 "How could the ML send cmnds to the Going queue? <%02i-%i>\n",
3574 dcb
->target_id
, dcb
->target_lun
);
3576 dprintkl(KERN_DEBUG
,
3577 "tag_mask for <%02i-%i> should be empty, is %08x!\n",
3578 dcb
->target_id
, dcb
->target_lun
,
3582 list_for_each_entry_safe(srb
, tmp
, &dcb
->srb_waiting_list
, list
) {
3586 result
= MK_RES(0, did_flag
, 0, 0);
3587 printk("W:%li<%02i-%i>", p
->pid
, p
->device
->id
,
3589 srb_waiting_remove(dcb
, srb
);
3590 srb_free_insert(acb
, srb
);
3592 pci_unmap_srb_sense(acb
, srb
);
3593 pci_unmap_srb(acb
, srb
);
3595 /* For new EH, we normally don't need to give commands back,
3596 * as they all complete or all time out */
3597 cmd
->scsi_done(cmd
);
3600 if (!list_empty(&dcb
->srb_waiting_list
))
3601 dprintkl(KERN_DEBUG
, "ML queued %i cmnds again to <%02i-%i>\n",
3602 list_size(&dcb
->srb_waiting_list
), dcb
->target_id
,
3604 dcb
->flag
&= ~ABORT_DEV_
;
3610 static void reset_scsi_bus(struct AdapterCtlBlk
*acb
)
3612 dprintkdbg(DBG_0
, "reset_scsi_bus: acb=%p\n", acb
);
3613 acb
->acb_flag
|= RESET_DEV
; /* RESET_DETECT, RESET_DONE, RESET_DEV */
3614 DC395x_write16(acb
, TRM_S1040_SCSI_CONTROL
, DO_RSTSCSI
);
3616 while (!(DC395x_read8(acb
, TRM_S1040_SCSI_INTSTATUS
) & INT_SCSIRESET
))
3621 static void set_basic_config(struct AdapterCtlBlk
*acb
)
3625 DC395x_write8(acb
, TRM_S1040_SCSI_TIMEOUT
, acb
->sel_timeout
);
3626 if (acb
->config
& HCC_PARITY
)
3627 bval
= PHASELATCH
| INITIATOR
| BLOCKRST
| PARITYCHECK
;
3629 bval
= PHASELATCH
| INITIATOR
| BLOCKRST
;
3631 DC395x_write8(acb
, TRM_S1040_SCSI_CONFIG0
, bval
);
3633 /* program configuration 1: Act_Neg (+ Act_Neg_Enh? + Fast_Filter? + DataDis?) */
3634 DC395x_write8(acb
, TRM_S1040_SCSI_CONFIG1
, 0x03); /* was 0x13: default */
3635 /* program Host ID */
3636 DC395x_write8(acb
, TRM_S1040_SCSI_HOSTID
, acb
->scsi_host
->this_id
);
3637 /* set ansynchronous transfer */
3638 DC395x_write8(acb
, TRM_S1040_SCSI_OFFSET
, 0x00);
3639 /* Turn LED control off */
3640 wval
= DC395x_read16(acb
, TRM_S1040_GEN_CONTROL
) & 0x7F;
3641 DC395x_write16(acb
, TRM_S1040_GEN_CONTROL
, wval
);
3643 wval
= DC395x_read16(acb
, TRM_S1040_DMA_CONFIG
) & ~DMA_FIFO_CTRL
;
3645 DMA_FIFO_HALF_HALF
| DMA_ENHANCE
/*| DMA_MEM_MULTI_READ */ ;
3646 DC395x_write16(acb
, TRM_S1040_DMA_CONFIG
, wval
);
3647 /* Clear pending interrupt status */
3648 DC395x_read8(acb
, TRM_S1040_SCSI_INTSTATUS
);
3649 /* Enable SCSI interrupt */
3650 DC395x_write8(acb
, TRM_S1040_SCSI_INTEN
, 0x7F);
3651 DC395x_write8(acb
, TRM_S1040_DMA_INTEN
, EN_SCSIINTR
| EN_DMAXFERERROR
3652 /*| EN_DMAXFERABORT | EN_DMAXFERCOMP | EN_FORCEDMACOMP */
3657 static void scsi_reset_detect(struct AdapterCtlBlk
*acb
)
3659 dprintkl(KERN_INFO
, "scsi_reset_detect: acb=%p\n", acb
);
3660 /* delay half a second */
3661 if (timer_pending(&acb
->waiting_timer
))
3662 del_timer(&acb
->waiting_timer
);
3664 DC395x_write8(acb
, TRM_S1040_SCSI_CONTROL
, DO_RSTMODULE
);
3665 DC395x_write8(acb
, TRM_S1040_DMA_CONTROL
, DMARESETMODULE
);
3666 /*DC395x_write8(acb, TRM_S1040_DMA_CONTROL,STOPDMAXFER); */
3668 /* Maybe we locked up the bus? Then lets wait even longer ... */
3669 acb
->scsi_host
->last_reset
=
3670 jiffies
+ 5 * HZ
/ 2 +
3671 HZ
* acb
->eeprom
.delay_time
;
3673 clear_fifo(acb
, "scsi_reset_detect");
3674 set_basic_config(acb
);
3676 /*DC395x_write16(acb, TRM_S1040_SCSI_CONTROL, DO_HWRESELECT); */
3678 if (acb
->acb_flag
& RESET_DEV
) { /* RESET_DETECT, RESET_DONE, RESET_DEV */
3679 acb
->acb_flag
|= RESET_DONE
;
3681 acb
->acb_flag
|= RESET_DETECT
;
3682 reset_dev_param(acb
);
3683 doing_srb_done(acb
, DID_RESET
, NULL
, 1);
3684 /*DC395x_RecoverSRB( acb ); */
3685 acb
->active_dcb
= NULL
;
3687 waiting_process_next(acb
);
3692 static void request_sense(struct AdapterCtlBlk
*acb
, struct DeviceCtlBlk
*dcb
,
3693 struct ScsiReqBlk
*srb
)
3695 struct scsi_cmnd
*cmd
= srb
->cmd
;
3696 dprintkdbg(DBG_1
, "request_sense: (pid#%li) <%02i-%i>\n",
3697 cmd
->pid
, cmd
->device
->id
, cmd
->device
->lun
);
3699 srb
->flag
|= AUTO_REQSENSE
;
3700 srb
->adapter_status
= 0;
3701 srb
->target_status
= 0;
3703 /* KG: Can this prevent crap sense data ? */
3704 memset(cmd
->sense_buffer
, 0, sizeof(cmd
->sense_buffer
));
3706 /* Save some data */
3707 srb
->segment_x
[DC395x_MAX_SG_LISTENTRY
- 1].address
=
3708 srb
->segment_x
[0].address
;
3709 srb
->segment_x
[DC395x_MAX_SG_LISTENTRY
- 1].length
=
3710 srb
->segment_x
[0].length
;
3711 srb
->xferred
= srb
->total_xfer_length
;
3712 /* srb->segment_x : a one entry of S/G list table */
3713 srb
->total_xfer_length
= sizeof(cmd
->sense_buffer
);
3714 srb
->segment_x
[0].length
= sizeof(cmd
->sense_buffer
);
3715 /* Map sense buffer */
3716 srb
->segment_x
[0].address
=
3717 pci_map_single(acb
->dev
, cmd
->sense_buffer
,
3718 sizeof(cmd
->sense_buffer
), PCI_DMA_FROMDEVICE
);
3719 dprintkdbg(DBG_SG
, "request_sense: map buffer %p->%08x(%05x)\n",
3720 cmd
->sense_buffer
, srb
->segment_x
[0].address
,
3721 sizeof(cmd
->sense_buffer
));
3725 if (start_scsi(acb
, dcb
, srb
)) { /* Should only happen, if sb. else grabs the bus */
3726 dprintkl(KERN_DEBUG
,
3727 "request_sense: (pid#%li) failed <%02i-%i>\n",
3728 srb
->cmd
->pid
, dcb
->target_id
, dcb
->target_lun
);
3729 srb_going_to_waiting_move(dcb
, srb
);
3730 waiting_set_timer(acb
, HZ
/ 100);
3736 * device_alloc - Allocate a new device instance. This create the
3737 * devices instance and sets up all the data items. The adapter
3738 * instance is required to obtain confiuration information for this
3739 * device. This does *not* add this device to the adapters device
3742 * @acb: The adapter to obtain configuration information from.
3743 * @target: The target for the new device.
3744 * @lun: The lun for the new device.
3746 * Return the new device if succesfull or NULL on failure.
3748 static struct DeviceCtlBlk
*device_alloc(struct AdapterCtlBlk
*acb
,
3751 struct NvRamType
*eeprom
= &acb
->eeprom
;
3752 u8 period_index
= eeprom
->target
[target
].period
& 0x07;
3753 struct DeviceCtlBlk
*dcb
;
3755 dcb
= kmalloc(sizeof(struct DeviceCtlBlk
), GFP_ATOMIC
);
3756 dprintkdbg(DBG_0
, "device_alloc: <%02i-%i>\n", target
, lun
);
3760 INIT_LIST_HEAD(&dcb
->srb_going_list
);
3761 INIT_LIST_HEAD(&dcb
->srb_waiting_list
);
3762 dcb
->active_srb
= NULL
;
3764 dcb
->max_command
= 1;
3765 dcb
->target_id
= target
;
3766 dcb
->target_lun
= lun
;
3767 #ifndef DC395x_NO_DISCONNECT
3769 IDENTIFY(dcb
->dev_mode
& NTC_DO_DISCONNECT
, lun
);
3771 dcb
->identify_msg
= IDENTIFY(0, lun
);
3773 dcb
->dev_mode
= eeprom
->target
[target
].cfg0
;
3776 dcb
->min_nego_period
= clock_period
[period_index
];
3777 dcb
->sync_period
= 0;
3778 dcb
->sync_offset
= 0;
3781 #ifndef DC395x_NO_WIDE
3782 if ((dcb
->dev_mode
& NTC_DO_WIDE_NEGO
)
3783 && (acb
->config
& HCC_WIDE_CARD
))
3784 dcb
->sync_mode
|= WIDE_NEGO_ENABLE
;
3786 #ifndef DC395x_NO_SYNC
3787 if (dcb
->dev_mode
& NTC_DO_SYNC_NEGO
)
3788 if (!(lun
) || current_sync_offset
)
3789 dcb
->sync_mode
|= SYNC_NEGO_ENABLE
;
3791 if (dcb
->target_lun
!= 0) {
3793 struct DeviceCtlBlk
*p
;
3794 list_for_each_entry(p
, &acb
->dcb_list
, list
)
3795 if (p
->target_id
== dcb
->target_id
)
3798 "device_alloc: <%02i-%i> copy from <%02i-%i>\n",
3799 dcb
->target_id
, dcb
->target_lun
,
3800 p
->target_id
, p
->target_lun
);
3801 dcb
->sync_mode
= p
->sync_mode
;
3802 dcb
->sync_period
= p
->sync_period
;
3803 dcb
->min_nego_period
= p
->min_nego_period
;
3804 dcb
->sync_offset
= p
->sync_offset
;
3805 dcb
->inquiry7
= p
->inquiry7
;
3812 * adapter_add_device - Adds the device instance to the adaptor instance.
3814 * @acb: The adapter device to be updated
3815 * @dcb: A newly created and intialised device instance to add.
3817 static void adapter_add_device(struct AdapterCtlBlk
*acb
,
3818 struct DeviceCtlBlk
*dcb
)
3820 /* backpointer to adapter */
3823 /* set run_robin to this device if it is currently empty */
3824 if (list_empty(&acb
->dcb_list
))
3825 acb
->dcb_run_robin
= dcb
;
3827 /* add device to list */
3828 list_add_tail(&dcb
->list
, &acb
->dcb_list
);
3830 /* update device maps */
3831 acb
->dcb_map
[dcb
->target_id
] |= (1 << dcb
->target_lun
);
3832 acb
->children
[dcb
->target_id
][dcb
->target_lun
] = dcb
;
3837 * adapter_remove_device - Removes the device instance from the adaptor
3838 * instance. The device instance is not check in any way or freed by this.
3839 * The caller is expected to take care of that. This will simply remove the
3840 * device from the adapters data strcutures.
3842 * @acb: The adapter device to be updated
3843 * @dcb: A device that has previously been added to the adapter.
3845 static void adapter_remove_device(struct AdapterCtlBlk
*acb
,
3846 struct DeviceCtlBlk
*dcb
)
3848 struct DeviceCtlBlk
*i
;
3849 struct DeviceCtlBlk
*tmp
;
3850 dprintkdbg(DBG_0
, "adapter_remove_device: <%02i-%i>\n",
3851 dcb
->target_id
, dcb
->target_lun
);
3853 /* fix up any pointers to this device that we have in the adapter */
3854 if (acb
->active_dcb
== dcb
)
3855 acb
->active_dcb
= NULL
;
3856 if (acb
->dcb_run_robin
== dcb
)
3857 acb
->dcb_run_robin
= dcb_get_next(&acb
->dcb_list
, dcb
);
3859 /* unlink from list */
3860 list_for_each_entry_safe(i
, tmp
, &acb
->dcb_list
, list
)
3866 /* clear map and children */
3867 acb
->dcb_map
[dcb
->target_id
] &= ~(1 << dcb
->target_lun
);
3868 acb
->children
[dcb
->target_id
][dcb
->target_lun
] = NULL
;
3874 * adapter_remove_and_free_device - Removes a single device from the adapter
3875 * and then frees the device information.
3877 * @acb: The adapter device to be updated
3878 * @dcb: A device that has previously been added to the adapter.
3880 static void adapter_remove_and_free_device(struct AdapterCtlBlk
*acb
,
3881 struct DeviceCtlBlk
*dcb
)
3883 if (list_size(&dcb
->srb_going_list
) > 1) {
3884 dprintkdbg(DBG_1
, "adapter_remove_and_free_device: <%02i-%i> "
3885 "Won't remove because of %i active requests.\n",
3886 dcb
->target_id
, dcb
->target_lun
,
3887 list_size(&dcb
->srb_going_list
));
3890 adapter_remove_device(acb
, dcb
);
3896 * adapter_remove_and_free_all_devices - Removes and frees all of the
3897 * devices associated with the specified adapter.
3899 * @acb: The adapter from which all devices should be removed.
3901 static void adapter_remove_and_free_all_devices(struct AdapterCtlBlk
* acb
)
3903 struct DeviceCtlBlk
*dcb
;
3904 struct DeviceCtlBlk
*tmp
;
3905 dprintkdbg(DBG_1
, "adapter_remove_and_free_all_devices: num=%i\n",
3906 list_size(&acb
->dcb_list
));
3908 list_for_each_entry_safe(dcb
, tmp
, &acb
->dcb_list
, list
)
3909 adapter_remove_and_free_device(acb
, dcb
);
3914 * dc395x_slave_alloc - Called by the scsi mid layer to tell us about a new
3915 * scsi device that we need to deal with. We allocate a new device and then
3916 * insert that device into the adapters device list.
3918 * @scsi_device: The new scsi device that we need to handle.
3920 static int dc395x_slave_alloc(struct scsi_device
*scsi_device
)
3922 struct AdapterCtlBlk
*acb
= (struct AdapterCtlBlk
*)scsi_device
->host
->hostdata
;
3923 struct DeviceCtlBlk
*dcb
;
3925 dcb
= device_alloc(acb
, scsi_device
->id
, scsi_device
->lun
);
3928 adapter_add_device(acb
, dcb
);
3935 * dc395x_slave_destroy - Called by the scsi mid layer to tell us about a
3936 * device that is going away.
3938 * @scsi_device: The new scsi device that we need to handle.
3940 static void dc395x_slave_destroy(struct scsi_device
*scsi_device
)
3942 struct AdapterCtlBlk
*acb
= (struct AdapterCtlBlk
*)scsi_device
->host
->hostdata
;
3943 struct DeviceCtlBlk
*dcb
= find_dcb(acb
, scsi_device
->id
, scsi_device
->lun
);
3945 adapter_remove_and_free_device(acb
, dcb
);
3952 * trms1040_wait_30us: wait for 30 us
3954 * Waits for 30us (using the chip by the looks of it..)
3956 * @io_port: base I/O address
3958 static void __devinit
trms1040_wait_30us(unsigned long io_port
)
3960 /* ScsiPortStallExecution(30); wait 30 us */
3961 outb(5, io_port
+ TRM_S1040_GEN_TIMER
);
3962 while (!(inb(io_port
+ TRM_S1040_GEN_STATUS
) & GTIMEOUT
))
3968 * trms1040_write_cmd - write the secified command and address to
3971 * @io_port: base I/O address
3972 * @cmd: SB + op code (command) to send
3973 * @addr: address to send
3975 static void __devinit
trms1040_write_cmd(unsigned long io_port
, u8 cmd
, u8 addr
)
3980 /* program SB + OP code */
3981 for (i
= 0; i
< 3; i
++, cmd
<<= 1) {
3982 send_data
= NVR_SELECT
;
3983 if (cmd
& 0x04) /* Start from bit 2 */
3984 send_data
|= NVR_BITOUT
;
3986 outb(send_data
, io_port
+ TRM_S1040_GEN_NVRAM
);
3987 trms1040_wait_30us(io_port
);
3988 outb((send_data
| NVR_CLOCK
),
3989 io_port
+ TRM_S1040_GEN_NVRAM
);
3990 trms1040_wait_30us(io_port
);
3994 for (i
= 0; i
< 7; i
++, addr
<<= 1) {
3995 send_data
= NVR_SELECT
;
3996 if (addr
& 0x40) /* Start from bit 6 */
3997 send_data
|= NVR_BITOUT
;
3999 outb(send_data
, io_port
+ TRM_S1040_GEN_NVRAM
);
4000 trms1040_wait_30us(io_port
);
4001 outb((send_data
| NVR_CLOCK
),
4002 io_port
+ TRM_S1040_GEN_NVRAM
);
4003 trms1040_wait_30us(io_port
);
4005 outb(NVR_SELECT
, io_port
+ TRM_S1040_GEN_NVRAM
);
4006 trms1040_wait_30us(io_port
);
4011 * trms1040_set_data - store a single byte in the eeprom
4013 * Called from write all to write a single byte into the SSEEPROM
4014 * Which is done one bit at a time.
4016 * @io_port: base I/O address
4017 * @addr: offset into EEPROM
4018 * @byte: bytes to write
4020 static void __devinit
trms1040_set_data(unsigned long io_port
, u8 addr
, u8 byte
)
4025 /* Send write command & address */
4026 trms1040_write_cmd(io_port
, 0x05, addr
);
4029 for (i
= 0; i
< 8; i
++, byte
<<= 1) {
4030 send_data
= NVR_SELECT
;
4031 if (byte
& 0x80) /* Start from bit 7 */
4032 send_data
|= NVR_BITOUT
;
4034 outb(send_data
, io_port
+ TRM_S1040_GEN_NVRAM
);
4035 trms1040_wait_30us(io_port
);
4036 outb((send_data
| NVR_CLOCK
), io_port
+ TRM_S1040_GEN_NVRAM
);
4037 trms1040_wait_30us(io_port
);
4039 outb(NVR_SELECT
, io_port
+ TRM_S1040_GEN_NVRAM
);
4040 trms1040_wait_30us(io_port
);
4042 /* Disable chip select */
4043 outb(0, io_port
+ TRM_S1040_GEN_NVRAM
);
4044 trms1040_wait_30us(io_port
);
4046 outb(NVR_SELECT
, io_port
+ TRM_S1040_GEN_NVRAM
);
4047 trms1040_wait_30us(io_port
);
4049 /* Wait for write ready */
4051 outb((NVR_SELECT
| NVR_CLOCK
), io_port
+ TRM_S1040_GEN_NVRAM
);
4052 trms1040_wait_30us(io_port
);
4054 outb(NVR_SELECT
, io_port
+ TRM_S1040_GEN_NVRAM
);
4055 trms1040_wait_30us(io_port
);
4057 if (inb(io_port
+ TRM_S1040_GEN_NVRAM
) & NVR_BITIN
)
4061 /* Disable chip select */
4062 outb(0, io_port
+ TRM_S1040_GEN_NVRAM
);
4067 * trms1040_write_all - write 128 bytes to the eeprom
4069 * Write the supplied 128 bytes to the chips SEEPROM
4071 * @eeprom: the data to write
4072 * @io_port: the base io port
4074 static void __devinit
trms1040_write_all(struct NvRamType
*eeprom
, unsigned long io_port
)
4076 u8
*b_eeprom
= (u8
*)eeprom
;
4079 /* Enable SEEPROM */
4080 outb((inb(io_port
+ TRM_S1040_GEN_CONTROL
) | EN_EEPROM
),
4081 io_port
+ TRM_S1040_GEN_CONTROL
);
4084 trms1040_write_cmd(io_port
, 0x04, 0xFF);
4085 outb(0, io_port
+ TRM_S1040_GEN_NVRAM
);
4086 trms1040_wait_30us(io_port
);
4089 for (addr
= 0; addr
< 128; addr
++, b_eeprom
++)
4090 trms1040_set_data(io_port
, addr
, *b_eeprom
);
4093 trms1040_write_cmd(io_port
, 0x04, 0x00);
4094 outb(0, io_port
+ TRM_S1040_GEN_NVRAM
);
4095 trms1040_wait_30us(io_port
);
4097 /* Disable SEEPROM */
4098 outb((inb(io_port
+ TRM_S1040_GEN_CONTROL
) & ~EN_EEPROM
),
4099 io_port
+ TRM_S1040_GEN_CONTROL
);
4104 * trms1040_get_data - get a single byte from the eeprom
4106 * Called from read all to read a single byte into the SSEEPROM
4107 * Which is done one bit at a time.
4109 * @io_port: base I/O address
4110 * @addr: offset into SEEPROM
4112 * Returns the the byte read.
4114 static u8 __devinit
trms1040_get_data(unsigned long io_port
, u8 addr
)
4120 /* Send read command & address */
4121 trms1040_write_cmd(io_port
, 0x06, addr
);
4124 for (i
= 0; i
< 8; i
++) {
4125 outb((NVR_SELECT
| NVR_CLOCK
), io_port
+ TRM_S1040_GEN_NVRAM
);
4126 trms1040_wait_30us(io_port
);
4127 outb(NVR_SELECT
, io_port
+ TRM_S1040_GEN_NVRAM
);
4129 /* Get data bit while falling edge */
4130 read_byte
= inb(io_port
+ TRM_S1040_GEN_NVRAM
);
4132 if (read_byte
& NVR_BITIN
)
4135 trms1040_wait_30us(io_port
);
4138 /* Disable chip select */
4139 outb(0, io_port
+ TRM_S1040_GEN_NVRAM
);
4145 * trms1040_read_all - read all bytes from the eeprom
4147 * Read the 128 bytes from the SEEPROM.
4149 * @eeprom: where to store the data
4150 * @io_port: the base io port
4152 static void __devinit
trms1040_read_all(struct NvRamType
*eeprom
, unsigned long io_port
)
4154 u8
*b_eeprom
= (u8
*)eeprom
;
4157 /* Enable SEEPROM */
4158 outb((inb(io_port
+ TRM_S1040_GEN_CONTROL
) | EN_EEPROM
),
4159 io_port
+ TRM_S1040_GEN_CONTROL
);
4162 for (addr
= 0; addr
< 128; addr
++, b_eeprom
++)
4163 *b_eeprom
= trms1040_get_data(io_port
, addr
);
4165 /* Disable SEEPROM */
4166 outb((inb(io_port
+ TRM_S1040_GEN_CONTROL
) & ~EN_EEPROM
),
4167 io_port
+ TRM_S1040_GEN_CONTROL
);
4173 * check_eeprom - get and check contents of the eeprom
4175 * Read seeprom 128 bytes into the memory provider in eeprom.
4176 * Checks the checksum and if it's not correct it uses a set of default
4179 * @eeprom: caller allocated strcuture to read the eeprom data into
4180 * @io_port: io port to read from
4182 static void __devinit
check_eeprom(struct NvRamType
*eeprom
, unsigned long io_port
)
4184 u16
*w_eeprom
= (u16
*)eeprom
;
4190 trms1040_read_all(eeprom
, io_port
); /* read eeprom */
4193 for (w_addr
= 0, w_eeprom
= (u16
*)eeprom
; w_addr
< 64;
4194 w_addr
++, w_eeprom
++)
4196 if (cksum
!= 0x1234) {
4198 * Checksum is wrong.
4199 * Load a set of defaults into the eeprom buffer
4201 dprintkl(KERN_WARNING
,
4202 "EEProm checksum error: using default values and options.\n");
4203 eeprom
->sub_vendor_id
[0] = (u8
)PCI_VENDOR_ID_TEKRAM
;
4204 eeprom
->sub_vendor_id
[1] = (u8
)(PCI_VENDOR_ID_TEKRAM
>> 8);
4205 eeprom
->sub_sys_id
[0] = (u8
)PCI_DEVICE_ID_TEKRAM_TRMS1040
;
4206 eeprom
->sub_sys_id
[1] =
4207 (u8
)(PCI_DEVICE_ID_TEKRAM_TRMS1040
>> 8);
4208 eeprom
->sub_class
= 0x00;
4209 eeprom
->vendor_id
[0] = (u8
)PCI_VENDOR_ID_TEKRAM
;
4210 eeprom
->vendor_id
[1] = (u8
)(PCI_VENDOR_ID_TEKRAM
>> 8);
4211 eeprom
->device_id
[0] = (u8
)PCI_DEVICE_ID_TEKRAM_TRMS1040
;
4212 eeprom
->device_id
[1] =
4213 (u8
)(PCI_DEVICE_ID_TEKRAM_TRMS1040
>> 8);
4214 eeprom
->reserved
= 0x00;
4216 for (d_addr
= 0, d_eeprom
= (u32
*)eeprom
->target
;
4217 d_addr
< 16; d_addr
++, d_eeprom
++)
4218 *d_eeprom
= 0x00000077; /* cfg3,cfg2,period,cfg0 */
4220 *d_eeprom
++ = 0x04000F07; /* max_tag,delay_time,channel_cfg,scsi_id */
4221 *d_eeprom
++ = 0x00000015; /* reserved1,boot_lun,boot_target,reserved0 */
4222 for (d_addr
= 0; d_addr
< 12; d_addr
++, d_eeprom
++)
4225 /* Now load defaults (maybe set by boot/module params) */
4226 set_safe_settings();
4228 eeprom_override(eeprom
);
4230 eeprom
->cksum
= 0x00;
4231 for (w_addr
= 0, cksum
= 0, w_eeprom
= (u16
*)eeprom
;
4232 w_addr
< 63; w_addr
++, w_eeprom
++)
4235 *w_eeprom
= 0x1234 - cksum
;
4236 trms1040_write_all(eeprom
, io_port
);
4237 eeprom
->delay_time
= cfg_data
[CFG_RESET_DELAY
].value
;
4239 set_safe_settings();
4240 eeprom_index_to_delay(eeprom
);
4241 eeprom_override(eeprom
);
4247 * print_eeprom_settings - output the eeprom settings
4248 * to the kernel log so people can see what they were.
4250 * @eeprom: The eeprom data strucutre to show details for.
4252 static void __devinit
print_eeprom_settings(struct NvRamType
*eeprom
)
4254 dprintkl(KERN_INFO
, "Used settings: AdapterID=%02i, Speed=%i(%02i.%01iMHz), dev_mode=0x%02x\n",
4256 eeprom
->target
[0].period
,
4257 clock_speed
[eeprom
->target
[0].period
] / 10,
4258 clock_speed
[eeprom
->target
[0].period
] % 10,
4259 eeprom
->target
[0].cfg0
);
4260 dprintkl(KERN_INFO
, " AdaptMode=0x%02x, Tags=%i(%02i), DelayReset=%is\n",
4261 eeprom
->channel_cfg
, eeprom
->max_tag
,
4262 1 << eeprom
->max_tag
, eeprom
->delay_time
);
4266 /* Free SG tables */
4267 static void adapter_sg_tables_free(struct AdapterCtlBlk
*acb
)
4270 const unsigned srbs_per_page
= PAGE_SIZE
/SEGMENTX_LEN
;
4272 for (i
= 0; i
< DC395x_MAX_SRB_CNT
; i
+= srbs_per_page
)
4273 kfree(acb
->srb_array
[i
].segment_x
);
4278 * Allocate SG tables; as we have to pci_map them, an SG list (struct SGentry*)
4279 * should never cross a page boundary */
4280 static int __devinit
adapter_sg_tables_alloc(struct AdapterCtlBlk
*acb
)
4282 const unsigned mem_needed
= (DC395x_MAX_SRB_CNT
+1)
4284 int pages
= (mem_needed
+(PAGE_SIZE
-1))/PAGE_SIZE
;
4285 const unsigned srbs_per_page
= PAGE_SIZE
/SEGMENTX_LEN
;
4288 struct SGentry
*ptr
;
4290 for (i
= 0; i
< DC395x_MAX_SRB_CNT
; i
++)
4291 acb
->srb_array
[i
].segment_x
= NULL
;
4293 dprintkdbg(DBG_1
, "Allocate %i pages for SG tables\n", pages
);
4295 ptr
= (struct SGentry
*)kmalloc(PAGE_SIZE
, GFP_KERNEL
);
4297 adapter_sg_tables_free(acb
);
4300 dprintkdbg(DBG_1
, "Allocate %li bytes at %p for SG segments %i\n",
4301 PAGE_SIZE
, ptr
, srb_idx
);
4303 while (i
< srbs_per_page
&& srb_idx
< DC395x_MAX_SRB_CNT
)
4304 acb
->srb_array
[srb_idx
++].segment_x
=
4305 ptr
+ (i
++ * DC395x_MAX_SG_LISTENTRY
);
4307 if (i
< srbs_per_page
)
4308 acb
->srb
.segment_x
=
4309 ptr
+ (i
* DC395x_MAX_SG_LISTENTRY
);
4311 dprintkl(KERN_DEBUG
, "No space for tmsrb SG table reserved?!\n");
4318 * adapter_print_config - print adapter connection and termination
4321 * The io port in the adapter needs to have been set before calling
4324 * @acb: The adapter to print the information for.
4326 static void __devinit
adapter_print_config(struct AdapterCtlBlk
*acb
)
4330 bval
= DC395x_read8(acb
, TRM_S1040_GEN_STATUS
);
4331 dprintkl(KERN_INFO
, "%sConnectors: ",
4332 ((bval
& WIDESCSI
) ? "(Wide) " : ""));
4333 if (!(bval
& CON5068
))
4334 printk("ext%s ", !(bval
& EXT68HIGH
) ? "68" : "50");
4335 if (!(bval
& CON68
))
4336 printk("int68%s ", !(bval
& INT68HIGH
) ? "" : "(50)");
4337 if (!(bval
& CON50
))
4339 if ((bval
& (CON5068
| CON50
| CON68
)) ==
4340 0 /*(CON5068 | CON50 | CON68) */ )
4341 printk(" Oops! (All 3?) ");
4342 bval
= DC395x_read8(acb
, TRM_S1040_GEN_CONTROL
);
4343 printk(" Termination: ");
4344 if (bval
& DIS_TERM
)
4345 printk("Disabled\n");
4347 if (bval
& AUTOTERM
)
4349 if (bval
& LOW8TERM
)
4359 * adapter_init_params - Initialize the various parameters in the
4360 * adapter structure. Note that the pointer to the scsi_host is set
4361 * early (when this instance is created) and the io_port and irq
4362 * values are set later after they have been reserved. This just gets
4363 * everything set to a good starting position.
4365 * The eeprom structure in the adapter needs to have been set before
4366 * calling this function.
4368 * @acb: The adapter to initialize.
4370 static void __devinit
adapter_init_params(struct AdapterCtlBlk
*acb
)
4372 struct NvRamType
*eeprom
= &acb
->eeprom
;
4375 /* NOTE: acb->scsi_host is set at scsi_host/acb creation time */
4376 /* NOTE: acb->io_port_base is set at port registration time */
4377 /* NOTE: acb->io_port_len is set at port registration time */
4379 INIT_LIST_HEAD(&acb
->dcb_list
);
4380 acb
->dcb_run_robin
= NULL
;
4381 acb
->active_dcb
= NULL
;
4383 INIT_LIST_HEAD(&acb
->srb_free_list
);
4384 /* temp SRB for Q tag used or abort command used */
4385 acb
->tmp_srb
= &acb
->srb
;
4386 init_timer(&acb
->waiting_timer
);
4387 init_timer(&acb
->selto_timer
);
4389 acb
->srb_count
= DC395x_MAX_SRB_CNT
;
4391 acb
->sel_timeout
= DC395x_SEL_TIMEOUT
; /* timeout=250ms */
4392 /* NOTE: acb->irq_level is set at IRQ registration time */
4394 acb
->tag_max_num
= 1 << eeprom
->max_tag
;
4395 if (acb
->tag_max_num
> 30)
4396 acb
->tag_max_num
= 30;
4398 acb
->acb_flag
= 0; /* RESET_DETECT, RESET_DONE, RESET_DEV */
4399 acb
->gmode2
= eeprom
->channel_cfg
;
4400 acb
->config
= 0; /* NOTE: actually set in adapter_init_chip */
4402 if (eeprom
->channel_cfg
& NAC_SCANLUN
)
4404 acb
->scan_devices
= 1;
4406 acb
->scsi_host
->this_id
= eeprom
->scsi_id
;
4407 acb
->hostid_bit
= (1 << acb
->scsi_host
->this_id
);
4409 for (i
= 0; i
< DC395x_MAX_SCSI_ID
; i
++)
4410 acb
->dcb_map
[i
] = 0;
4414 /* link static array of srbs into the srb free list */
4415 for (i
= 0; i
< acb
->srb_count
- 1; i
++)
4416 srb_free_insert(acb
, &acb
->srb_array
[i
]);
4421 * adapter_init_host - Initialize the scsi host instance based on
4422 * values that we have already stored in the adapter instance. There's
4423 * some mention that a lot of these are deprecated, so we won't use
4424 * them (we'll use the ones in the adapter instance) but we'll fill
4425 * them in in case something else needs them.
4427 * The eeprom structure, irq and io ports in the adapter need to have
4428 * been set before calling this function.
4430 * @host: The scsi host instance to fill in the values for.
4432 static void __devinit
adapter_init_scsi_host(struct Scsi_Host
*host
)
4434 struct AdapterCtlBlk
*acb
= (struct AdapterCtlBlk
*)host
->hostdata
;
4435 struct NvRamType
*eeprom
= &acb
->eeprom
;
4437 host
->max_cmd_len
= 24;
4438 host
->can_queue
= DC395x_MAX_CMD_QUEUE
;
4439 host
->cmd_per_lun
= DC395x_MAX_CMD_PER_LUN
;
4440 host
->this_id
= (int)eeprom
->scsi_id
;
4441 host
->io_port
= acb
->io_port_base
;
4442 host
->n_io_port
= acb
->io_port_len
;
4443 host
->dma_channel
= -1;
4444 host
->unique_id
= acb
->io_port_base
;
4445 host
->irq
= acb
->irq_level
;
4446 host
->last_reset
= jiffies
;
4449 if (host
->max_id
- 1 == eeprom
->scsi_id
)
4452 #ifdef CONFIG_SCSI_MULTI_LUN
4453 if (eeprom
->channel_cfg
& NAC_SCANLUN
)
4465 * adapter_init_chip - Get the chip into a know state and figure out
4466 * some of the settings that apply to this adapter.
4468 * The io port in the adapter needs to have been set before calling
4469 * this function. The config will be configured correctly on return.
4471 * @acb: The adapter which we are to init.
4473 static void __devinit
adapter_init_chip(struct AdapterCtlBlk
*acb
)
4475 struct NvRamType
*eeprom
= &acb
->eeprom
;
4477 /* Mask all the interrupt */
4478 DC395x_write8(acb
, TRM_S1040_DMA_INTEN
, 0x00);
4479 DC395x_write8(acb
, TRM_S1040_SCSI_INTEN
, 0x00);
4481 /* Reset SCSI module */
4482 DC395x_write16(acb
, TRM_S1040_SCSI_CONTROL
, DO_RSTMODULE
);
4484 /* Reset PCI/DMA module */
4485 DC395x_write8(acb
, TRM_S1040_DMA_CONTROL
, DMARESETMODULE
);
4488 /* program configuration 0 */
4489 acb
->config
= HCC_AUTOTERM
| HCC_PARITY
;
4490 if (DC395x_read8(acb
, TRM_S1040_GEN_STATUS
) & WIDESCSI
)
4491 acb
->config
|= HCC_WIDE_CARD
;
4493 if (eeprom
->channel_cfg
& NAC_POWERON_SCSI_RESET
)
4494 acb
->config
|= HCC_SCSI_RESET
;
4496 if (acb
->config
& HCC_SCSI_RESET
) {
4497 dprintkl(KERN_INFO
, "Performing initial SCSI bus reset\n");
4498 DC395x_write8(acb
, TRM_S1040_SCSI_CONTROL
, DO_RSTSCSI
);
4500 /*while (!( DC395x_read8(acb, TRM_S1040_SCSI_INTSTATUS) & INT_SCSIRESET )); */
4501 /*spin_unlock_irq (&io_request_lock); */
4504 acb
->scsi_host
->last_reset
=
4506 HZ
* acb
->eeprom
.delay_time
;
4508 /*spin_lock_irq (&io_request_lock); */
4514 * init_adapter - Grab the resource for the card, setup the adapter
4515 * information, set the card into a known state, create the various
4516 * tables etc etc. This basically gets all adapter information all up
4517 * to date, intialised and gets the chip in sync with it.
4519 * @host: This hosts adapter structure
4520 * @io_port: The base I/O port
4523 * Returns 0 if the initialization succeeds, any other value on
4526 static int __devinit
adapter_init(struct AdapterCtlBlk
*acb
,
4527 unsigned long io_port
, u32 io_port_len
, unsigned int irq
)
4529 if (!request_region(io_port
, io_port_len
, DC395X_NAME
)) {
4530 dprintkl(KERN_ERR
, "Failed to reserve IO region 0x%lx\n", io_port
);
4533 /* store port base to indicate we have registered it */
4534 acb
->io_port_base
= io_port
;
4535 acb
->io_port_len
= io_port_len
;
4537 if (request_irq(irq
, dc395x_interrupt
, SA_SHIRQ
, DC395X_NAME
, acb
)) {
4538 /* release the region we just claimed */
4539 dprintkl(KERN_INFO
, "Failed to register IRQ\n");
4542 /* store irq to indicate we have registered it */
4543 acb
->irq_level
= irq
;
4545 /* get eeprom configuration information and command line settings etc */
4546 check_eeprom(&acb
->eeprom
, io_port
);
4547 print_eeprom_settings(&acb
->eeprom
);
4549 /* setup adapter control block */
4550 adapter_init_params(acb
);
4552 /* display card connectors/termination settings */
4553 adapter_print_config(acb
);
4555 if (adapter_sg_tables_alloc(acb
)) {
4556 dprintkl(KERN_DEBUG
, "Memory allocation for SG tables failed\n");
4559 adapter_init_scsi_host(acb
->scsi_host
);
4560 adapter_init_chip(acb
);
4561 set_basic_config(acb
);
4564 "adapter_init: acb=%p, pdcb_map=%p psrb_array=%p "
4565 "size{acb=0x%04x dcb=0x%04x srb=0x%04x}\n",
4566 acb
, acb
->dcb_map
, acb
->srb_array
, sizeof(struct AdapterCtlBlk
),
4567 sizeof(struct DeviceCtlBlk
), sizeof(struct ScsiReqBlk
));
4572 free_irq(acb
->irq_level
, acb
);
4573 if (acb
->io_port_base
)
4574 release_region(acb
->io_port_base
, acb
->io_port_len
);
4575 adapter_sg_tables_free(acb
);
4582 * adapter_uninit_chip - cleanly shut down the scsi controller chip,
4583 * stopping all operations and disabling interrupt generation on the
4586 * @acb: The adapter which we are to shutdown.
4588 static void adapter_uninit_chip(struct AdapterCtlBlk
*acb
)
4590 /* disable interrupts */
4591 DC395x_write8(acb
, TRM_S1040_DMA_INTEN
, 0);
4592 DC395x_write8(acb
, TRM_S1040_SCSI_INTEN
, 0);
4594 /* reset the scsi bus */
4595 if (acb
->config
& HCC_SCSI_RESET
)
4596 reset_scsi_bus(acb
);
4598 /* clear any pending interupt state */
4599 DC395x_read8(acb
, TRM_S1040_SCSI_INTSTATUS
);
4605 * adapter_uninit - Shut down the chip and release any resources that
4606 * we had allocated. Once this returns the adapter should not be used
4609 * @acb: The adapter which we are to un-initialize.
4611 static void adapter_uninit(struct AdapterCtlBlk
*acb
)
4613 unsigned long flags
;
4614 DC395x_LOCK_IO(acb
->scsi_host
, flags
);
4617 if (timer_pending(&acb
->waiting_timer
))
4618 del_timer(&acb
->waiting_timer
);
4619 if (timer_pending(&acb
->selto_timer
))
4620 del_timer(&acb
->selto_timer
);
4622 adapter_uninit_chip(acb
);
4623 adapter_remove_and_free_all_devices(acb
);
4624 DC395x_UNLOCK_IO(acb
->scsi_host
, flags
);
4627 free_irq(acb
->irq_level
, acb
);
4628 if (acb
->io_port_base
)
4629 release_region(acb
->io_port_base
, acb
->io_port_len
);
4631 adapter_sg_tables_free(acb
);
4636 #define SPRINTF(args...) pos += sprintf(pos, args)
4640 if (YN) SPRINTF(" Yes ");\
4641 else SPRINTF(" No ")
4643 static int dc395x_proc_info(struct Scsi_Host
*host
, char *buffer
,
4644 char **start
, off_t offset
, int length
, int inout
)
4646 struct AdapterCtlBlk
*acb
= (struct AdapterCtlBlk
*)host
->hostdata
;
4649 struct DeviceCtlBlk
*dcb
;
4650 unsigned long flags
;
4653 if (inout
) /* Has data been written to the file ? */
4656 SPRINTF(DC395X_BANNER
" PCI SCSI Host Adapter\n");
4657 SPRINTF(" Driver Version " DC395X_VERSION
"\n");
4659 DC395x_LOCK_IO(acb
->scsi_host
, flags
);
4661 SPRINTF("SCSI Host Nr %i, ", host
->host_no
);
4662 SPRINTF("DC395U/UW/F DC315/U %s\n",
4663 (acb
->config
& HCC_WIDE_CARD
) ? "Wide" : "");
4664 SPRINTF("io_port_base 0x%04lx, ", acb
->io_port_base
);
4665 SPRINTF("irq_level 0x%04x, ", acb
->irq_level
);
4666 SPRINTF(" SelTimeout %ims\n", (1638 * acb
->sel_timeout
) / 1000);
4668 SPRINTF("MaxID %i, MaxLUN %i, ", host
->max_id
, host
->max_lun
);
4669 SPRINTF("AdapterID %i\n", host
->this_id
);
4671 SPRINTF("tag_max_num %i", acb
->tag_max_num
);
4672 /*SPRINTF(", DMA_Status %i\n", DC395x_read8(acb, TRM_S1040_DMA_STATUS)); */
4673 SPRINTF(", FilterCfg 0x%02x",
4674 DC395x_read8(acb
, TRM_S1040_SCSI_CONFIG1
));
4675 SPRINTF(", DelayReset %is\n", acb
->eeprom
.delay_time
);
4678 SPRINTF("Nr of DCBs: %i\n", list_size(&acb
->dcb_list
));
4680 ("Map of attached LUNs: %02x %02x %02x %02x %02x %02x %02x %02x\n",
4681 acb
->dcb_map
[0], acb
->dcb_map
[1], acb
->dcb_map
[2],
4682 acb
->dcb_map
[3], acb
->dcb_map
[4], acb
->dcb_map
[5],
4683 acb
->dcb_map
[6], acb
->dcb_map
[7]);
4685 (" %02x %02x %02x %02x %02x %02x %02x %02x\n",
4686 acb
->dcb_map
[8], acb
->dcb_map
[9], acb
->dcb_map
[10],
4687 acb
->dcb_map
[11], acb
->dcb_map
[12], acb
->dcb_map
[13],
4688 acb
->dcb_map
[14], acb
->dcb_map
[15]);
4691 ("Un ID LUN Prty Sync Wide DsCn SndS TagQ nego_period SyncFreq SyncOffs MaxCmd\n");
4694 list_for_each_entry(dcb
, &acb
->dcb_list
, list
) {
4696 SPRINTF("%02i %02i %02i ", dev
, dcb
->target_id
,
4698 YESNO(dcb
->dev_mode
& NTC_DO_PARITY_CHK
);
4699 YESNO(dcb
->sync_offset
);
4700 YESNO(dcb
->sync_period
& WIDE_SYNC
);
4701 YESNO(dcb
->dev_mode
& NTC_DO_DISCONNECT
);
4702 YESNO(dcb
->dev_mode
& NTC_DO_SEND_START
);
4703 YESNO(dcb
->sync_mode
& EN_TAG_QUEUEING
);
4704 nego_period
= clock_period
[dcb
->sync_period
& 0x07] << 2;
4705 if (dcb
->sync_offset
)
4706 SPRINTF(" %03i ns ", nego_period
);
4708 SPRINTF(" (%03i ns)", (dcb
->min_nego_period
<< 2));
4710 if (dcb
->sync_offset
& 0x0f) {
4711 spd
= 1000 / (nego_period
);
4712 spd1
= 1000 % (nego_period
);
4713 spd1
= (spd1
* 10 + nego_period
/ 2) / (nego_period
);
4714 SPRINTF(" %2i.%1i M %02i ", spd
, spd1
,
4715 (dcb
->sync_offset
& 0x0f));
4719 /* Add more info ... */
4720 SPRINTF(" %02i\n", dcb
->max_command
);
4724 if (timer_pending(&acb
->waiting_timer
))
4725 SPRINTF("Waiting queue timer running\n");
4729 list_for_each_entry(dcb
, &acb
->dcb_list
, list
) {
4730 struct ScsiReqBlk
*srb
;
4731 if (!list_empty(&dcb
->srb_waiting_list
))
4732 SPRINTF("DCB (%02i-%i): Waiting: %i:",
4733 dcb
->target_id
, dcb
->target_lun
,
4734 list_size(&dcb
->srb_waiting_list
));
4735 list_for_each_entry(srb
, &dcb
->srb_waiting_list
, list
)
4736 SPRINTF(" %li", srb
->cmd
->pid
);
4737 if (!list_empty(&dcb
->srb_going_list
))
4738 SPRINTF("\nDCB (%02i-%i): Going : %i:",
4739 dcb
->target_id
, dcb
->target_lun
,
4740 list_size(&dcb
->srb_going_list
));
4741 list_for_each_entry(srb
, &dcb
->srb_going_list
, list
)
4742 SPRINTF(" %li", srb
->cmd
->pid
);
4743 if (!list_empty(&dcb
->srb_waiting_list
) || !list_empty(&dcb
->srb_going_list
))
4747 if (debug_enabled(DBG_1
)) {
4748 SPRINTF("DCB list for ACB %p:\n", acb
);
4749 list_for_each_entry(dcb
, &acb
->dcb_list
, list
) {
4750 SPRINTF("%p -> ", dcb
);
4755 *start
= buffer
+ offset
;
4756 DC395x_UNLOCK_IO(acb
->scsi_host
, flags
);
4758 if (pos
- buffer
< offset
)
4760 else if (pos
- buffer
- offset
< length
)
4761 return pos
- buffer
- offset
;
4767 static struct scsi_host_template dc395x_driver_template
= {
4768 .module
= THIS_MODULE
,
4769 .proc_name
= DC395X_NAME
,
4770 .proc_info
= dc395x_proc_info
,
4771 .name
= DC395X_BANNER
" " DC395X_VERSION
,
4772 .queuecommand
= dc395x_queue_command
,
4773 .bios_param
= dc395x_bios_param
,
4774 .slave_alloc
= dc395x_slave_alloc
,
4775 .slave_destroy
= dc395x_slave_destroy
,
4776 .can_queue
= DC395x_MAX_CAN_QUEUE
,
4778 .sg_tablesize
= DC395x_MAX_SG_TABLESIZE
,
4779 .cmd_per_lun
= DC395x_MAX_CMD_PER_LUN
,
4780 .eh_abort_handler
= dc395x_eh_abort
,
4781 .eh_bus_reset_handler
= dc395x_eh_bus_reset
,
4782 .unchecked_isa_dma
= 0,
4783 .use_clustering
= DISABLE_CLUSTERING
,
4788 * banner_display - Display banner on first instance of driver
4791 static void banner_display(void)
4793 static int banner_done
= 0;
4796 dprintkl(KERN_INFO
, "%s %s\n", DC395X_BANNER
, DC395X_VERSION
);
4803 * dc395x_init_one - Initialise a single instance of the adapter.
4805 * The PCI layer will call this once for each instance of the adapter
4806 * that it finds in the system. The pci_dev strcuture indicates which
4807 * instance we are being called from.
4809 * @dev: The PCI device to intialize.
4810 * @id: Looks like a pointer to the entry in our pci device table
4811 * that was actually matched by the PCI subsystem.
4813 * Returns 0 on success, or an error code (-ve) on failure.
4815 static int __devinit
dc395x_init_one(struct pci_dev
*dev
,
4816 const struct pci_device_id
*id
)
4818 struct Scsi_Host
*scsi_host
= NULL
;
4819 struct AdapterCtlBlk
*acb
= NULL
;
4820 unsigned long io_port_base
;
4821 unsigned int io_port_len
;
4824 dprintkdbg(DBG_0
, "Init one instance (%s)\n", pci_name(dev
));
4827 if (pci_enable_device(dev
))
4829 dprintkl(KERN_INFO
, "PCI Enable device failed.\n");
4832 io_port_base
= pci_resource_start(dev
, 0) & PCI_BASE_ADDRESS_IO_MASK
;
4833 io_port_len
= pci_resource_len(dev
, 0);
4835 dprintkdbg(DBG_0
, "IO_PORT=0x%04lx, IRQ=0x%x\n", io_port_base
, dev
->irq
);
4837 /* allocate scsi host information (includes out adapter) */
4838 scsi_host
= scsi_host_alloc(&dc395x_driver_template
,
4839 sizeof(struct AdapterCtlBlk
));
4841 dprintkl(KERN_INFO
, "scsi_host_alloc failed\n");
4844 acb
= (struct AdapterCtlBlk
*)scsi_host
->hostdata
;
4845 acb
->scsi_host
= scsi_host
;
4848 /* initialise the adapter and everything we need */
4849 if (adapter_init(acb
, io_port_base
, io_port_len
, irq
)) {
4850 dprintkl(KERN_INFO
, "adapter init failed\n");
4854 pci_set_master(dev
);
4856 /* get the scsi mid level to scan for new devices on the bus */
4857 if (scsi_add_host(scsi_host
, &dev
->dev
)) {
4858 dprintkl(KERN_ERR
, "scsi_add_host failed\n");
4861 pci_set_drvdata(dev
, scsi_host
);
4862 scsi_scan_host(scsi_host
);
4868 adapter_uninit(acb
);
4869 if (scsi_host
!= NULL
)
4870 scsi_host_put(scsi_host
);
4871 pci_disable_device(dev
);
4877 * dc395x_remove_one - Called to remove a single instance of the
4880 * @dev: The PCI device to intialize.
4882 static void __devexit
dc395x_remove_one(struct pci_dev
*dev
)
4884 struct Scsi_Host
*scsi_host
= pci_get_drvdata(dev
);
4885 struct AdapterCtlBlk
*acb
= (struct AdapterCtlBlk
*)(scsi_host
->hostdata
);
4887 dprintkdbg(DBG_0
, "dc395x_remove_one: acb=%p\n", acb
);
4889 scsi_remove_host(scsi_host
);
4890 adapter_uninit(acb
);
4891 pci_disable_device(dev
);
4892 scsi_host_put(scsi_host
);
4893 pci_set_drvdata(dev
, NULL
);
4897 static struct pci_device_id dc395x_pci_table
[] = {
4899 .vendor
= PCI_VENDOR_ID_TEKRAM
,
4900 .device
= PCI_DEVICE_ID_TEKRAM_TRMS1040
,
4901 .subvendor
= PCI_ANY_ID
,
4902 .subdevice
= PCI_ANY_ID
,
4904 {} /* Terminating entry */
4906 MODULE_DEVICE_TABLE(pci
, dc395x_pci_table
);
4909 static struct pci_driver dc395x_driver
= {
4910 .name
= DC395X_NAME
,
4911 .id_table
= dc395x_pci_table
,
4912 .probe
= dc395x_init_one
,
4913 .remove
= __devexit_p(dc395x_remove_one
),
4918 * dc395x_module_init - Module initialization function
4920 * Used by both module and built-in driver to initialise this driver.
4922 static int __init
dc395x_module_init(void)
4924 return pci_module_init(&dc395x_driver
);
4929 * dc395x_module_exit - Module cleanup function.
4931 static void __exit
dc395x_module_exit(void)
4933 pci_unregister_driver(&dc395x_driver
);
4937 module_init(dc395x_module_init
);
4938 module_exit(dc395x_module_exit
);
4940 MODULE_AUTHOR("C.L. Huang / Erich Chen / Kurt Garloff");
4941 MODULE_DESCRIPTION("SCSI host adapter driver for Tekram TRM-S1040 based adapters: Tekram DC395 and DC315 series");
4942 MODULE_LICENSE("GPL");