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)
186 #define VIRTX_LEN (sizeof(void *) * 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 */
239 unsigned char *virt_addr
; /* Virtual address of current transfer position */
242 * The sense buffer handling function, request_sense, uses
243 * the first hw sg entry (segment_x[0]) and the transfer
244 * length (total_xfer_length). While doing this it stores the
245 * original values into the last sg hw list
246 * (srb->segment_x[DC395x_MAX_SG_LISTENTRY - 1] and the
247 * total_xfer_length in xferred. These values are restored in
248 * pci_unmap_srb_sense. This is the only place xferred is used.
250 u32 xferred
; /* Saved copy of total_xfer_length */
270 struct DeviceCtlBlk
{
271 struct list_head list
; /* next/prev ptrs for the dcb list */
272 struct AdapterCtlBlk
*acb
;
273 struct list_head srb_going_list
; /* head of going srb list */
274 struct list_head srb_waiting_list
; /* head of waiting srb list */
276 struct ScsiReqBlk
*active_srb
;
281 u8 target_id
; /* SCSI Target ID (SCSI Only) */
282 u8 target_lun
; /* SCSI Log. Unit (SCSI Only) */
286 u8 inquiry7
; /* To store Inquiry flags */
287 u8 sync_mode
; /* 0:async mode */
288 u8 min_nego_period
; /* for nego. */
289 u8 sync_period
; /* for reg. */
291 u8 sync_offset
; /* for reg. and nego.(low nibble) */
297 struct AdapterCtlBlk
{
298 struct Scsi_Host
*scsi_host
;
300 unsigned long io_port_base
;
301 unsigned long io_port_len
;
303 struct list_head dcb_list
; /* head of going dcb list */
304 struct DeviceCtlBlk
*dcb_run_robin
;
305 struct DeviceCtlBlk
*active_dcb
;
307 struct list_head srb_free_list
; /* head of free srb list */
308 struct ScsiReqBlk
*tmp_srb
;
309 struct timer_list waiting_timer
;
310 struct timer_list selto_timer
;
316 unsigned int irq_level
;
326 u8 dcb_map
[DC395x_MAX_SCSI_ID
];
327 struct DeviceCtlBlk
*children
[DC395x_MAX_SCSI_ID
][32];
333 struct ScsiReqBlk srb_array
[DC395x_MAX_SRB_CNT
];
334 struct ScsiReqBlk srb
;
336 struct NvRamType eeprom
; /* eeprom settings for this adapter */
340 /*---------------------------------------------------------------------------
342 ---------------------------------------------------------------------------*/
343 static void data_out_phase0(struct AdapterCtlBlk
*acb
, struct ScsiReqBlk
*srb
,
345 static void data_in_phase0(struct AdapterCtlBlk
*acb
, struct ScsiReqBlk
*srb
,
347 static void command_phase0(struct AdapterCtlBlk
*acb
, struct ScsiReqBlk
*srb
,
349 static void status_phase0(struct AdapterCtlBlk
*acb
, struct ScsiReqBlk
*srb
,
351 static void msgout_phase0(struct AdapterCtlBlk
*acb
, struct ScsiReqBlk
*srb
,
353 static void msgin_phase0(struct AdapterCtlBlk
*acb
, struct ScsiReqBlk
*srb
,
355 static void data_out_phase1(struct AdapterCtlBlk
*acb
, struct ScsiReqBlk
*srb
,
357 static void data_in_phase1(struct AdapterCtlBlk
*acb
, struct ScsiReqBlk
*srb
,
359 static void command_phase1(struct AdapterCtlBlk
*acb
, struct ScsiReqBlk
*srb
,
361 static void status_phase1(struct AdapterCtlBlk
*acb
, struct ScsiReqBlk
*srb
,
363 static void msgout_phase1(struct AdapterCtlBlk
*acb
, struct ScsiReqBlk
*srb
,
365 static void msgin_phase1(struct AdapterCtlBlk
*acb
, struct ScsiReqBlk
*srb
,
367 static void nop0(struct AdapterCtlBlk
*acb
, struct ScsiReqBlk
*srb
,
369 static void nop1(struct AdapterCtlBlk
*acb
, struct ScsiReqBlk
*srb
,
371 static void set_basic_config(struct AdapterCtlBlk
*acb
);
372 static void cleanup_after_transfer(struct AdapterCtlBlk
*acb
,
373 struct ScsiReqBlk
*srb
);
374 static void reset_scsi_bus(struct AdapterCtlBlk
*acb
);
375 static void data_io_transfer(struct AdapterCtlBlk
*acb
,
376 struct ScsiReqBlk
*srb
, u16 io_dir
);
377 static void disconnect(struct AdapterCtlBlk
*acb
);
378 static void reselect(struct AdapterCtlBlk
*acb
);
379 static u8
start_scsi(struct AdapterCtlBlk
*acb
, struct DeviceCtlBlk
*dcb
,
380 struct ScsiReqBlk
*srb
);
381 static inline void enable_msgout_abort(struct AdapterCtlBlk
*acb
,
382 struct ScsiReqBlk
*srb
);
383 static void build_srb(struct scsi_cmnd
*cmd
, struct DeviceCtlBlk
*dcb
,
384 struct ScsiReqBlk
*srb
);
385 static void doing_srb_done(struct AdapterCtlBlk
*acb
, u8 did_code
,
386 struct scsi_cmnd
*cmd
, u8 force
);
387 static void scsi_reset_detect(struct AdapterCtlBlk
*acb
);
388 static void pci_unmap_srb(struct AdapterCtlBlk
*acb
, struct ScsiReqBlk
*srb
);
389 static void pci_unmap_srb_sense(struct AdapterCtlBlk
*acb
,
390 struct ScsiReqBlk
*srb
);
391 static void srb_done(struct AdapterCtlBlk
*acb
, struct DeviceCtlBlk
*dcb
,
392 struct ScsiReqBlk
*srb
);
393 static void request_sense(struct AdapterCtlBlk
*acb
, struct DeviceCtlBlk
*dcb
,
394 struct ScsiReqBlk
*srb
);
395 static void set_xfer_rate(struct AdapterCtlBlk
*acb
,
396 struct DeviceCtlBlk
*dcb
);
397 static void waiting_timeout(unsigned long ptr
);
400 /*---------------------------------------------------------------------------
402 ---------------------------------------------------------------------------*/
403 static u16 current_sync_offset
= 0;
405 static void *dc395x_scsi_phase0
[] = {
406 data_out_phase0
,/* phase:0 */
407 data_in_phase0
, /* phase:1 */
408 command_phase0
, /* phase:2 */
409 status_phase0
, /* phase:3 */
410 nop0
, /* phase:4 PH_BUS_FREE .. initial phase */
411 nop0
, /* phase:5 PH_BUS_FREE .. initial phase */
412 msgout_phase0
, /* phase:6 */
413 msgin_phase0
, /* phase:7 */
416 static void *dc395x_scsi_phase1
[] = {
417 data_out_phase1
,/* phase:0 */
418 data_in_phase1
, /* phase:1 */
419 command_phase1
, /* phase:2 */
420 status_phase1
, /* phase:3 */
421 nop1
, /* phase:4 PH_BUS_FREE .. initial phase */
422 nop1
, /* phase:5 PH_BUS_FREE .. initial phase */
423 msgout_phase1
, /* phase:6 */
424 msgin_phase1
, /* phase:7 */
428 *Fast20: 000 50ns, 20.0 MHz
430 * 010 100ns, 10.0 MHz
437 *Fast40(LVDS): 000 25ns, 40.0 MHz
440 * 011 100ns, 10.0 MHz
446 /*static u8 clock_period[] = {12,19,25,31,37,44,50,62};*/
448 /* real period:48ns,76ns,100ns,124ns,148ns,176ns,200ns,248ns */
449 static u8 clock_period
[] = { 12, 18, 25, 31, 37, 43, 50, 62 };
450 static u16 clock_speed
[] = { 200, 133, 100, 80, 67, 58, 50, 40 };
453 /*---------------------------------------------------------------------------
455 ---------------------------------------------------------------------------*/
457 * Module/boot parameters currently effect *all* instances of the
458 * card in the system.
462 * Command line parameters are stored in a structure below.
463 * These are the index's into the structure for the various
464 * command line options.
466 #define CFG_ADAPTER_ID 0
467 #define CFG_MAX_SPEED 1
468 #define CFG_DEV_MODE 2
469 #define CFG_ADAPTER_MODE 3
471 #define CFG_RESET_DELAY 5
473 #define CFG_NUM 6 /* number of configuration items */
477 * Value used to indicate that a command line override
478 * hasn't been used to modify the value.
480 #define CFG_PARAM_UNSET -1
484 * Hold command line parameters.
486 struct ParameterData
{
487 int value
; /* value of this setting */
488 int min
; /* minimum value */
489 int max
; /* maximum value */
490 int def
; /* default value */
491 int safe
; /* safe value */
493 static struct ParameterData __devinitdata cfg_data
[] = {
512 NTC_DO_PARITY_CHK
| NTC_DO_DISCONNECT
| NTC_DO_SYNC_NEGO
|
513 NTC_DO_WIDE_NEGO
| NTC_DO_TAG_QUEUEING
|
515 NTC_DO_PARITY_CHK
| NTC_DO_SEND_START
521 #ifdef CONFIG_SCSI_MULTI_LUN
524 NAC_GT2DRIVES
| NAC_GREATER_1G
| NAC_POWERON_SCSI_RESET
525 /*| NAC_ACTIVE_NEG*/,
526 NAC_GT2DRIVES
| NAC_GREATER_1G
| NAC_POWERON_SCSI_RESET
| 0x08
532 3, /* 16 tags (??) */
546 * Safe settings. If set to zero the the BIOS/default values with
547 * command line overrides will be used. If set to 1 then safe and
548 * slow settings will be used.
550 static int use_safe_settings
= 0;
551 module_param_named(safe
, use_safe_settings
, bool, 0);
552 MODULE_PARM_DESC(safe
, "Use safe and slow settings only. Default: false");
555 module_param_named(adapter_id
, cfg_data
[CFG_ADAPTER_ID
].value
, int, 0);
556 MODULE_PARM_DESC(adapter_id
, "Adapter SCSI ID. Default 7 (0-15)");
558 module_param_named(max_speed
, cfg_data
[CFG_MAX_SPEED
].value
, int, 0);
559 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");
561 module_param_named(dev_mode
, cfg_data
[CFG_DEV_MODE
].value
, int, 0);
562 MODULE_PARM_DESC(dev_mode
, "Device mode.");
564 module_param_named(adapter_mode
, cfg_data
[CFG_ADAPTER_MODE
].value
, int, 0);
565 MODULE_PARM_DESC(adapter_mode
, "Adapter mode.");
567 module_param_named(tags
, cfg_data
[CFG_TAGS
].value
, int, 0);
568 MODULE_PARM_DESC(tags
, "Number of tags (1<<x). Default 3 (0-5)");
570 module_param_named(reset_delay
, cfg_data
[CFG_RESET_DELAY
].value
, int, 0);
571 MODULE_PARM_DESC(reset_delay
, "Reset delay in seconds. Default 1 (0-180)");
575 * set_safe_settings - if the use_safe_settings option is set then
576 * set all values to the safe and slow values.
578 static void __devinit
set_safe_settings(void)
580 if (use_safe_settings
)
584 dprintkl(KERN_INFO
, "Using safe settings.\n");
585 for (i
= 0; i
< CFG_NUM
; i
++)
587 cfg_data
[i
].value
= cfg_data
[i
].safe
;
594 * fix_settings - reset any boot parameters which are out of range
595 * back to the default values.
597 static void __devinit
fix_settings(void)
602 "setup: AdapterId=%08x MaxSpeed=%08x DevMode=%08x "
603 "AdapterMode=%08x Tags=%08x ResetDelay=%08x\n",
604 cfg_data
[CFG_ADAPTER_ID
].value
,
605 cfg_data
[CFG_MAX_SPEED
].value
,
606 cfg_data
[CFG_DEV_MODE
].value
,
607 cfg_data
[CFG_ADAPTER_MODE
].value
,
608 cfg_data
[CFG_TAGS
].value
,
609 cfg_data
[CFG_RESET_DELAY
].value
);
610 for (i
= 0; i
< CFG_NUM
; i
++)
612 if (cfg_data
[i
].value
< cfg_data
[i
].min
613 || cfg_data
[i
].value
> cfg_data
[i
].max
)
614 cfg_data
[i
].value
= cfg_data
[i
].def
;
621 * Mapping from the eeprom delay index value (index into this array)
622 * to the the number of actual seconds that the delay should be for.
624 static char __devinitdata eeprom_index_to_delay_map
[] =
625 { 1, 3, 5, 10, 16, 30, 60, 120 };
629 * eeprom_index_to_delay - Take the eeprom delay setting and convert it
630 * into a number of seconds.
632 * @eeprom: The eeprom structure in which we find the delay index to map.
634 static void __devinit
eeprom_index_to_delay(struct NvRamType
*eeprom
)
636 eeprom
->delay_time
= eeprom_index_to_delay_map
[eeprom
->delay_time
];
641 * delay_to_eeprom_index - Take a delay in seconds and return the
642 * closest eeprom index which will delay for at least that amount of
645 * @delay: The delay, in seconds, to find the eeprom index for.
647 static int __devinit
delay_to_eeprom_index(int delay
)
650 while (idx
< 7 && eeprom_index_to_delay_map
[idx
] < delay
)
657 * eeprom_override - Override the eeprom settings, in the provided
658 * eeprom structure, with values that have been set on the command
661 * @eeprom: The eeprom data to override with command line options.
663 static void __devinit
eeprom_override(struct NvRamType
*eeprom
)
667 /* Adapter Settings */
668 if (cfg_data
[CFG_ADAPTER_ID
].value
!= CFG_PARAM_UNSET
)
669 eeprom
->scsi_id
= (u8
)cfg_data
[CFG_ADAPTER_ID
].value
;
671 if (cfg_data
[CFG_ADAPTER_MODE
].value
!= CFG_PARAM_UNSET
)
672 eeprom
->channel_cfg
= (u8
)cfg_data
[CFG_ADAPTER_MODE
].value
;
674 if (cfg_data
[CFG_RESET_DELAY
].value
!= CFG_PARAM_UNSET
)
675 eeprom
->delay_time
= delay_to_eeprom_index(
676 cfg_data
[CFG_RESET_DELAY
].value
);
678 if (cfg_data
[CFG_TAGS
].value
!= CFG_PARAM_UNSET
)
679 eeprom
->max_tag
= (u8
)cfg_data
[CFG_TAGS
].value
;
681 /* Device Settings */
682 for (id
= 0; id
< DC395x_MAX_SCSI_ID
; id
++) {
683 if (cfg_data
[CFG_DEV_MODE
].value
!= CFG_PARAM_UNSET
)
684 eeprom
->target
[id
].cfg0
=
685 (u8
)cfg_data
[CFG_DEV_MODE
].value
;
687 if (cfg_data
[CFG_MAX_SPEED
].value
!= CFG_PARAM_UNSET
)
688 eeprom
->target
[id
].period
=
689 (u8
)cfg_data
[CFG_MAX_SPEED
].value
;
695 /*---------------------------------------------------------------------------
696 ---------------------------------------------------------------------------*/
698 static unsigned int list_size(struct list_head
*head
)
700 unsigned int count
= 0;
701 struct list_head
*pos
;
702 list_for_each(pos
, head
)
708 static struct DeviceCtlBlk
*dcb_get_next(struct list_head
*head
,
709 struct DeviceCtlBlk
*pos
)
712 struct DeviceCtlBlk
* next
= NULL
;
713 struct DeviceCtlBlk
* i
;
715 if (list_empty(head
))
718 /* find supplied dcb and then select the next one */
719 list_for_each_entry(i
, head
, list
)
723 } else if (i
== pos
) {
726 /* if no next one take the head one (ie, wraparound) */
728 list_for_each_entry(i
, head
, list
) {
737 static void free_tag(struct DeviceCtlBlk
*dcb
, struct ScsiReqBlk
*srb
)
739 if (srb
->tag_number
< 255) {
740 dcb
->tag_mask
&= ~(1 << srb
->tag_number
); /* free tag mask */
741 srb
->tag_number
= 255;
746 /* Find cmd in SRB list */
747 static inline struct ScsiReqBlk
*find_cmd(struct scsi_cmnd
*cmd
,
748 struct list_head
*head
)
750 struct ScsiReqBlk
*i
;
751 list_for_each_entry(i
, head
, list
)
758 static struct ScsiReqBlk
*srb_get_free(struct AdapterCtlBlk
*acb
)
760 struct list_head
*head
= &acb
->srb_free_list
;
761 struct ScsiReqBlk
*srb
= NULL
;
763 if (!list_empty(head
)) {
764 srb
= list_entry(head
->next
, struct ScsiReqBlk
, list
);
765 list_del(head
->next
);
766 dprintkdbg(DBG_0
, "srb_get_free: srb=%p\n", srb
);
772 static void srb_free_insert(struct AdapterCtlBlk
*acb
, struct ScsiReqBlk
*srb
)
774 dprintkdbg(DBG_0
, "srb_free_insert: srb=%p\n", srb
);
775 list_add_tail(&srb
->list
, &acb
->srb_free_list
);
779 static void srb_waiting_insert(struct DeviceCtlBlk
*dcb
,
780 struct ScsiReqBlk
*srb
)
782 dprintkdbg(DBG_0
, "srb_waiting_insert: (pid#%li) <%02i-%i> srb=%p\n",
783 srb
->cmd
->pid
, dcb
->target_id
, dcb
->target_lun
, srb
);
784 list_add(&srb
->list
, &dcb
->srb_waiting_list
);
788 static void srb_waiting_append(struct DeviceCtlBlk
*dcb
,
789 struct ScsiReqBlk
*srb
)
791 dprintkdbg(DBG_0
, "srb_waiting_append: (pid#%li) <%02i-%i> srb=%p\n",
792 srb
->cmd
->pid
, dcb
->target_id
, dcb
->target_lun
, srb
);
793 list_add_tail(&srb
->list
, &dcb
->srb_waiting_list
);
797 static void srb_going_append(struct DeviceCtlBlk
*dcb
, struct ScsiReqBlk
*srb
)
799 dprintkdbg(DBG_0
, "srb_going_append: (pid#%li) <%02i-%i> srb=%p\n",
800 srb
->cmd
->pid
, dcb
->target_id
, dcb
->target_lun
, srb
);
801 list_add_tail(&srb
->list
, &dcb
->srb_going_list
);
805 static void srb_going_remove(struct DeviceCtlBlk
*dcb
, struct ScsiReqBlk
*srb
)
807 struct ScsiReqBlk
*i
;
808 struct ScsiReqBlk
*tmp
;
809 dprintkdbg(DBG_0
, "srb_going_remove: (pid#%li) <%02i-%i> srb=%p\n",
810 srb
->cmd
->pid
, dcb
->target_id
, dcb
->target_lun
, srb
);
812 list_for_each_entry_safe(i
, tmp
, &dcb
->srb_going_list
, list
)
814 list_del(&srb
->list
);
820 static void srb_waiting_remove(struct DeviceCtlBlk
*dcb
,
821 struct ScsiReqBlk
*srb
)
823 struct ScsiReqBlk
*i
;
824 struct ScsiReqBlk
*tmp
;
825 dprintkdbg(DBG_0
, "srb_waiting_remove: (pid#%li) <%02i-%i> srb=%p\n",
826 srb
->cmd
->pid
, dcb
->target_id
, dcb
->target_lun
, srb
);
828 list_for_each_entry_safe(i
, tmp
, &dcb
->srb_waiting_list
, list
)
830 list_del(&srb
->list
);
836 static void srb_going_to_waiting_move(struct DeviceCtlBlk
*dcb
,
837 struct ScsiReqBlk
*srb
)
840 "srb_going_to_waiting_move: (pid#%li) <%02i-%i> srb=%p\n",
841 srb
->cmd
->pid
, dcb
->target_id
, dcb
->target_lun
, srb
);
842 list_move(&srb
->list
, &dcb
->srb_waiting_list
);
846 static void srb_waiting_to_going_move(struct DeviceCtlBlk
*dcb
,
847 struct ScsiReqBlk
*srb
)
850 "srb_waiting_to_going_move: (pid#%li) <%02i-%i> srb=%p\n",
851 srb
->cmd
->pid
, dcb
->target_id
, dcb
->target_lun
, srb
);
852 list_move(&srb
->list
, &dcb
->srb_going_list
);
856 /* Sets the timer to wake us up */
857 static void waiting_set_timer(struct AdapterCtlBlk
*acb
, unsigned long to
)
859 if (timer_pending(&acb
->waiting_timer
))
861 init_timer(&acb
->waiting_timer
);
862 acb
->waiting_timer
.function
= waiting_timeout
;
863 acb
->waiting_timer
.data
= (unsigned long) acb
;
864 if (time_before(jiffies
+ to
, acb
->scsi_host
->last_reset
- HZ
/ 2))
865 acb
->waiting_timer
.expires
=
866 acb
->scsi_host
->last_reset
- HZ
/ 2 + 1;
868 acb
->waiting_timer
.expires
= jiffies
+ to
+ 1;
869 add_timer(&acb
->waiting_timer
);
873 /* Send the next command from the waiting list to the bus */
874 static void waiting_process_next(struct AdapterCtlBlk
*acb
)
876 struct DeviceCtlBlk
*start
= NULL
;
877 struct DeviceCtlBlk
*pos
;
878 struct DeviceCtlBlk
*dcb
;
879 struct ScsiReqBlk
*srb
;
880 struct list_head
*dcb_list_head
= &acb
->dcb_list
;
883 || (acb
->acb_flag
& (RESET_DETECT
+ RESET_DONE
+ RESET_DEV
)))
886 if (timer_pending(&acb
->waiting_timer
))
887 del_timer(&acb
->waiting_timer
);
889 if (list_empty(dcb_list_head
))
893 * Find the starting dcb. Need to find it again in the list
894 * since the list may have changed since we set the ptr to it
896 list_for_each_entry(dcb
, dcb_list_head
, list
)
897 if (dcb
== acb
->dcb_run_robin
) {
902 /* This can happen! */
903 start
= list_entry(dcb_list_head
->next
, typeof(*start
), list
);
904 acb
->dcb_run_robin
= start
;
909 * Loop over the dcb, but we start somewhere (potentially) in
910 * the middle of the loop so we need to manully do this.
914 struct list_head
*waiting_list_head
= &pos
->srb_waiting_list
;
916 /* Make sure, the next another device gets scheduled ... */
917 acb
->dcb_run_robin
= dcb_get_next(dcb_list_head
,
920 if (list_empty(waiting_list_head
) ||
921 pos
->max_command
<= list_size(&pos
->srb_going_list
)) {
922 /* move to next dcb */
923 pos
= dcb_get_next(dcb_list_head
, pos
);
925 srb
= list_entry(waiting_list_head
->next
,
926 struct ScsiReqBlk
, list
);
928 /* Try to send to the bus */
929 if (!start_scsi(acb
, pos
, srb
))
930 srb_waiting_to_going_move(pos
, srb
);
932 waiting_set_timer(acb
, HZ
/50);
935 } while (pos
!= start
);
939 /* Wake up waiting queue */
940 static void waiting_timeout(unsigned long ptr
)
943 struct AdapterCtlBlk
*acb
= (struct AdapterCtlBlk
*)ptr
;
945 "waiting_timeout: Queue woken up by timer. acb=%p\n", acb
);
946 DC395x_LOCK_IO(acb
->scsi_host
, flags
);
947 waiting_process_next(acb
);
948 DC395x_UNLOCK_IO(acb
->scsi_host
, flags
);
952 /* Get the DCB for a given ID/LUN combination */
953 static struct DeviceCtlBlk
*find_dcb(struct AdapterCtlBlk
*acb
, u8 id
, u8 lun
)
955 return acb
->children
[id
][lun
];
959 /* Send SCSI Request Block (srb) to adapter (acb) */
960 static void send_srb(struct AdapterCtlBlk
*acb
, struct ScsiReqBlk
*srb
)
962 struct DeviceCtlBlk
*dcb
= srb
->dcb
;
964 if (dcb
->max_command
<= list_size(&dcb
->srb_going_list
) ||
966 (acb
->acb_flag
& (RESET_DETECT
+ RESET_DONE
+ RESET_DEV
))) {
967 srb_waiting_append(dcb
, srb
);
968 waiting_process_next(acb
);
972 if (!start_scsi(acb
, dcb
, srb
))
973 srb_going_append(dcb
, srb
);
975 srb_waiting_insert(dcb
, srb
);
976 waiting_set_timer(acb
, HZ
/ 50);
981 /* Prepare SRB for being sent to Device DCB w/ command *cmd */
982 static void build_srb(struct scsi_cmnd
*cmd
, struct DeviceCtlBlk
*dcb
,
983 struct ScsiReqBlk
*srb
)
985 enum dma_data_direction dir
= cmd
->sc_data_direction
;
986 dprintkdbg(DBG_0
, "build_srb: (pid#%li) <%02i-%i>\n",
987 cmd
->pid
, dcb
->target_id
, dcb
->target_lun
);
992 srb
->total_xfer_length
= 0;
993 srb
->sg_bus_addr
= 0;
994 srb
->virt_addr
= NULL
;
996 srb
->adapter_status
= 0;
997 srb
->target_status
= 0;
1002 srb
->retry_count
= 0;
1003 srb
->tag_number
= TAG_NONE
;
1004 srb
->scsi_phase
= PH_BUS_FREE
; /* initial phase */
1005 srb
->end_message
= 0;
1007 if (dir
== PCI_DMA_NONE
|| !cmd
->request_buffer
) {
1009 "build_srb: [0] len=%d buf=%p use_sg=%d !MAP=%08x\n",
1010 cmd
->bufflen
, cmd
->request_buffer
,
1011 cmd
->use_sg
, srb
->segment_x
[0].address
);
1012 } else if (cmd
->use_sg
) {
1014 u32 reqlen
= cmd
->request_bufflen
;
1015 struct scatterlist
*sl
= (struct scatterlist
*)
1016 cmd
->request_buffer
;
1017 struct SGentry
*sgp
= srb
->segment_x
;
1018 srb
->sg_count
= pci_map_sg(dcb
->acb
->dev
, sl
, cmd
->use_sg
,
1021 "build_srb: [n] len=%d buf=%p use_sg=%d segs=%d\n",
1022 reqlen
, cmd
->request_buffer
, cmd
->use_sg
,
1025 for (i
= 0; i
< srb
->sg_count
; i
++) {
1026 u32 seglen
= (u32
)sg_dma_len(sl
+ i
);
1027 sgp
[i
].address
= (u32
)sg_dma_address(sl
+ i
);
1028 sgp
[i
].length
= seglen
;
1029 srb
->total_xfer_length
+= seglen
;
1030 srb
->virt_map
[i
] = kmap(sl
[i
].page
);
1032 srb
->virt_addr
= srb
->virt_map
[0];
1033 sgp
+= srb
->sg_count
- 1;
1036 * adjust last page if too big as it is allocated
1037 * on even page boundaries
1039 if (srb
->total_xfer_length
> reqlen
) {
1040 sgp
->length
-= (srb
->total_xfer_length
- reqlen
);
1041 srb
->total_xfer_length
= reqlen
;
1044 /* Fixup for WIDE padding - make sure length is even */
1045 if (dcb
->sync_period
& WIDE_SYNC
&&
1046 srb
->total_xfer_length
% 2) {
1047 srb
->total_xfer_length
++;
1051 srb
->sg_bus_addr
= pci_map_single(dcb
->acb
->dev
,
1056 dprintkdbg(DBG_SG
, "build_srb: [n] map sg %p->%08x(%05x)\n",
1057 srb
->segment_x
, srb
->sg_bus_addr
, SEGMENTX_LEN
);
1059 srb
->total_xfer_length
= cmd
->request_bufflen
;
1061 srb
->segment_x
[0].address
=
1062 pci_map_single(dcb
->acb
->dev
, cmd
->request_buffer
,
1063 srb
->total_xfer_length
, dir
);
1065 /* Fixup for WIDE padding - make sure length is even */
1066 if (dcb
->sync_period
& WIDE_SYNC
&& srb
->total_xfer_length
% 2)
1067 srb
->total_xfer_length
++;
1069 srb
->segment_x
[0].length
= srb
->total_xfer_length
;
1070 srb
->virt_addr
= cmd
->request_buffer
;
1072 "build_srb: [1] len=%d buf=%p use_sg=%d map=%08x\n",
1073 srb
->total_xfer_length
, cmd
->request_buffer
,
1074 cmd
->use_sg
, srb
->segment_x
[0].address
);
1080 * dc395x_queue_command - queue scsi command passed from the mid
1081 * layer, invoke 'done' on completion
1083 * @cmd: pointer to scsi command object
1084 * @done: function pointer to be invoked on completion
1086 * Returns 1 if the adapter (host) is busy, else returns 0. One
1087 * reason for an adapter to be busy is that the number
1088 * of outstanding queued commands is already equal to
1089 * struct Scsi_Host::can_queue .
1091 * Required: if struct Scsi_Host::can_queue is ever non-zero
1092 * then this function is required.
1094 * Locks: struct Scsi_Host::host_lock held on entry (with "irqsave")
1095 * and is expected to be held on return.
1098 static int dc395x_queue_command(struct scsi_cmnd
*cmd
, void (*done
)(struct scsi_cmnd
*))
1100 struct DeviceCtlBlk
*dcb
;
1101 struct ScsiReqBlk
*srb
;
1102 struct AdapterCtlBlk
*acb
=
1103 (struct AdapterCtlBlk
*)cmd
->device
->host
->hostdata
;
1104 dprintkdbg(DBG_0
, "queue_command: (pid#%li) <%02i-%i> cmnd=0x%02x\n",
1105 cmd
->pid
, cmd
->device
->id
, cmd
->device
->lun
, cmd
->cmnd
[0]);
1107 /* Assume BAD_TARGET; will be cleared later */
1108 cmd
->result
= DID_BAD_TARGET
<< 16;
1110 /* ignore invalid targets */
1111 if (cmd
->device
->id
>= acb
->scsi_host
->max_id
||
1112 cmd
->device
->lun
>= acb
->scsi_host
->max_lun
||
1113 cmd
->device
->lun
>31) {
1117 /* does the specified lun on the specified device exist */
1118 if (!(acb
->dcb_map
[cmd
->device
->id
] & (1 << cmd
->device
->lun
))) {
1119 dprintkl(KERN_INFO
, "queue_command: Ignore target <%02i-%i>\n",
1120 cmd
->device
->id
, cmd
->device
->lun
);
1124 /* do we have a DCB for the device */
1125 dcb
= find_dcb(acb
, cmd
->device
->id
, cmd
->device
->lun
);
1127 /* should never happen */
1128 dprintkl(KERN_ERR
, "queue_command: No such device <%02i-%i>",
1129 cmd
->device
->id
, cmd
->device
->lun
);
1133 /* set callback and clear result in the command */
1134 cmd
->scsi_done
= done
;
1137 srb
= srb_get_free(acb
);
1141 * Return 1 since we are unable to queue this command at this
1144 dprintkdbg(DBG_0
, "queue_command: No free srb's\n");
1148 build_srb(cmd
, dcb
, srb
);
1150 if (!list_empty(&dcb
->srb_waiting_list
)) {
1151 /* append to waiting queue */
1152 srb_waiting_append(dcb
, srb
);
1153 waiting_process_next(acb
);
1155 /* process immediately */
1158 dprintkdbg(DBG_1
, "queue_command: (pid#%li) done\n", cmd
->pid
);
1163 * Complete the command immediatey, and then return 0 to
1164 * indicate that we have handled the command. This is usually
1165 * done when the commad is for things like non existent
1174 * Return the disk geometry for the given SCSI device.
1176 static int dc395x_bios_param(struct scsi_device
*sdev
,
1177 struct block_device
*bdev
, sector_t capacity
, int *info
)
1179 #ifdef CONFIG_SCSI_DC395x_TRMS1040_TRADMAP
1180 int heads
, sectors
, cylinders
;
1181 struct AdapterCtlBlk
*acb
;
1182 int size
= capacity
;
1184 dprintkdbg(DBG_0
, "dc395x_bios_param..............\n");
1185 acb
= (struct AdapterCtlBlk
*)sdev
->host
->hostdata
;
1188 cylinders
= size
/ (heads
* sectors
);
1190 if ((acb
->gmode2
& NAC_GREATER_1G
) && (cylinders
> 1024)) {
1193 cylinders
= size
/ (heads
* sectors
);
1197 geom
[2] = cylinders
;
1200 return scsicam_bios_param(bdev
, capacity
, info
);
1205 static void dump_register_info(struct AdapterCtlBlk
*acb
,
1206 struct DeviceCtlBlk
*dcb
, struct ScsiReqBlk
*srb
)
1209 struct pci_dev
*dev
= acb
->dev
;
1210 pci_read_config_word(dev
, PCI_STATUS
, &pstat
);
1212 dcb
= acb
->active_dcb
;
1214 srb
= dcb
->active_srb
;
1217 dprintkl(KERN_INFO
, "dump: srb=%p cmd=%p OOOPS!\n",
1220 dprintkl(KERN_INFO
, "dump: srb=%p cmd=%p (pid#%li) "
1221 "cmnd=0x%02x <%02i-%i>\n",
1222 srb
, srb
->cmd
, srb
->cmd
->pid
,
1223 srb
->cmd
->cmnd
[0], srb
->cmd
->device
->id
,
1224 srb
->cmd
->device
->lun
);
1225 printk(" sglist=%p cnt=%i idx=%i len=%i\n",
1226 srb
->segment_x
, srb
->sg_count
, srb
->sg_index
,
1227 srb
->total_xfer_length
);
1228 printk(" state=0x%04x status=0x%02x phase=0x%02x (%sconn.)\n",
1229 srb
->state
, srb
->status
, srb
->scsi_phase
,
1230 (acb
->active_dcb
) ? "" : "not");
1232 dprintkl(KERN_INFO
, "dump: SCSI{status=0x%04x fifocnt=0x%02x "
1233 "signals=0x%02x irqstat=0x%02x sync=0x%02x target=0x%02x "
1234 "rselid=0x%02x ctr=0x%08x irqen=0x%02x config=0x%04x "
1235 "config2=0x%02x cmd=0x%02x selto=0x%02x}\n",
1236 DC395x_read16(acb
, TRM_S1040_SCSI_STATUS
),
1237 DC395x_read8(acb
, TRM_S1040_SCSI_FIFOCNT
),
1238 DC395x_read8(acb
, TRM_S1040_SCSI_SIGNAL
),
1239 DC395x_read8(acb
, TRM_S1040_SCSI_INTSTATUS
),
1240 DC395x_read8(acb
, TRM_S1040_SCSI_SYNC
),
1241 DC395x_read8(acb
, TRM_S1040_SCSI_TARGETID
),
1242 DC395x_read8(acb
, TRM_S1040_SCSI_IDMSG
),
1243 DC395x_read32(acb
, TRM_S1040_SCSI_COUNTER
),
1244 DC395x_read8(acb
, TRM_S1040_SCSI_INTEN
),
1245 DC395x_read16(acb
, TRM_S1040_SCSI_CONFIG0
),
1246 DC395x_read8(acb
, TRM_S1040_SCSI_CONFIG2
),
1247 DC395x_read8(acb
, TRM_S1040_SCSI_COMMAND
),
1248 DC395x_read8(acb
, TRM_S1040_SCSI_TIMEOUT
));
1249 dprintkl(KERN_INFO
, "dump: DMA{cmd=0x%04x fifocnt=0x%02x fstat=0x%02x "
1250 "irqstat=0x%02x irqen=0x%02x cfg=0x%04x tctr=0x%08x "
1251 "ctctr=0x%08x addr=0x%08x:0x%08x}\n",
1252 DC395x_read16(acb
, TRM_S1040_DMA_COMMAND
),
1253 DC395x_read8(acb
, TRM_S1040_DMA_FIFOCNT
),
1254 DC395x_read8(acb
, TRM_S1040_DMA_FIFOSTAT
),
1255 DC395x_read8(acb
, TRM_S1040_DMA_STATUS
),
1256 DC395x_read8(acb
, TRM_S1040_DMA_INTEN
),
1257 DC395x_read16(acb
, TRM_S1040_DMA_CONFIG
),
1258 DC395x_read32(acb
, TRM_S1040_DMA_XCNT
),
1259 DC395x_read32(acb
, TRM_S1040_DMA_CXCNT
),
1260 DC395x_read32(acb
, TRM_S1040_DMA_XHIGHADDR
),
1261 DC395x_read32(acb
, TRM_S1040_DMA_XLOWADDR
));
1262 dprintkl(KERN_INFO
, "dump: gen{gctrl=0x%02x gstat=0x%02x gtmr=0x%02x} "
1263 "pci{status=0x%04x}\n",
1264 DC395x_read8(acb
, TRM_S1040_GEN_CONTROL
),
1265 DC395x_read8(acb
, TRM_S1040_GEN_STATUS
),
1266 DC395x_read8(acb
, TRM_S1040_GEN_TIMER
),
1271 static inline void clear_fifo(struct AdapterCtlBlk
*acb
, char *txt
)
1273 #if debug_enabled(DBG_FIFO)
1274 u8 lines
= DC395x_read8(acb
, TRM_S1040_SCSI_SIGNAL
);
1275 u8 fifocnt
= DC395x_read8(acb
, TRM_S1040_SCSI_FIFOCNT
);
1276 if (!(fifocnt
& 0x40))
1277 dprintkdbg(DBG_FIFO
,
1278 "clear_fifo: (%i bytes) on phase %02x in %s\n",
1279 fifocnt
& 0x3f, lines
, txt
);
1281 DC395x_write16(acb
, TRM_S1040_SCSI_CONTROL
, DO_CLRFIFO
);
1285 static void reset_dev_param(struct AdapterCtlBlk
*acb
)
1287 struct DeviceCtlBlk
*dcb
;
1288 struct NvRamType
*eeprom
= &acb
->eeprom
;
1289 dprintkdbg(DBG_0
, "reset_dev_param: acb=%p\n", acb
);
1291 list_for_each_entry(dcb
, &acb
->dcb_list
, list
) {
1294 dcb
->sync_mode
&= ~(SYNC_NEGO_DONE
+ WIDE_NEGO_DONE
);
1295 dcb
->sync_period
= 0;
1296 dcb
->sync_offset
= 0;
1298 dcb
->dev_mode
= eeprom
->target
[dcb
->target_id
].cfg0
;
1299 period_index
= eeprom
->target
[dcb
->target_id
].period
& 0x07;
1300 dcb
->min_nego_period
= clock_period
[period_index
];
1301 if (!(dcb
->dev_mode
& NTC_DO_WIDE_NEGO
)
1302 || !(acb
->config
& HCC_WIDE_CARD
))
1303 dcb
->sync_mode
&= ~WIDE_NEGO_ENABLE
;
1309 * perform a hard reset on the SCSI bus
1310 * @cmd - some command for this host (for fetching hooks)
1311 * Returns: SUCCESS (0x2002) on success, else FAILED (0x2003).
1313 static int __dc395x_eh_bus_reset(struct scsi_cmnd
*cmd
)
1315 struct AdapterCtlBlk
*acb
=
1316 (struct AdapterCtlBlk
*)cmd
->device
->host
->hostdata
;
1318 "eh_bus_reset: (pid#%li) target=<%02i-%i> cmd=%p\n",
1319 cmd
->pid
, cmd
->device
->id
, cmd
->device
->lun
, cmd
);
1321 if (timer_pending(&acb
->waiting_timer
))
1322 del_timer(&acb
->waiting_timer
);
1327 DC395x_write8(acb
, TRM_S1040_DMA_INTEN
, 0x00);
1328 DC395x_write8(acb
, TRM_S1040_SCSI_INTEN
, 0x00);
1329 DC395x_write8(acb
, TRM_S1040_SCSI_CONTROL
, DO_RSTMODULE
);
1330 DC395x_write8(acb
, TRM_S1040_DMA_CONTROL
, DMARESETMODULE
);
1332 reset_scsi_bus(acb
);
1335 /* We may be in serious trouble. Wait some seconds */
1336 acb
->scsi_host
->last_reset
=
1337 jiffies
+ 3 * HZ
/ 2 +
1338 HZ
* acb
->eeprom
.delay_time
;
1341 * re-enable interrupt
1343 /* Clear SCSI FIFO */
1344 DC395x_write8(acb
, TRM_S1040_DMA_CONTROL
, CLRXFIFO
);
1345 clear_fifo(acb
, "eh_bus_reset");
1346 /* Delete pending IRQ */
1347 DC395x_read8(acb
, TRM_S1040_SCSI_INTSTATUS
);
1348 set_basic_config(acb
);
1350 reset_dev_param(acb
);
1351 doing_srb_done(acb
, DID_RESET
, cmd
, 0);
1352 acb
->active_dcb
= NULL
;
1353 acb
->acb_flag
= 0; /* RESET_DETECT, RESET_DONE ,RESET_DEV */
1354 waiting_process_next(acb
);
1359 static int dc395x_eh_bus_reset(struct scsi_cmnd
*cmd
)
1363 spin_lock_irq(cmd
->device
->host
->host_lock
);
1364 rc
= __dc395x_eh_bus_reset(cmd
);
1365 spin_unlock_irq(cmd
->device
->host
->host_lock
);
1371 * abort an errant SCSI command
1372 * @cmd - command to be aborted
1373 * Returns: SUCCESS (0x2002) on success, else FAILED (0x2003).
1375 static int dc395x_eh_abort(struct scsi_cmnd
*cmd
)
1378 * Look into our command queues: If it has not been sent already,
1379 * we remove it and return success. Otherwise fail.
1381 struct AdapterCtlBlk
*acb
=
1382 (struct AdapterCtlBlk
*)cmd
->device
->host
->hostdata
;
1383 struct DeviceCtlBlk
*dcb
;
1384 struct ScsiReqBlk
*srb
;
1385 dprintkl(KERN_INFO
, "eh_abort: (pid#%li) target=<%02i-%i> cmd=%p\n",
1386 cmd
->pid
, cmd
->device
->id
, cmd
->device
->lun
, cmd
);
1388 dcb
= find_dcb(acb
, cmd
->device
->id
, cmd
->device
->lun
);
1390 dprintkl(KERN_DEBUG
, "eh_abort: No such device\n");
1394 srb
= find_cmd(cmd
, &dcb
->srb_waiting_list
);
1396 srb_waiting_remove(dcb
, srb
);
1397 pci_unmap_srb_sense(acb
, srb
);
1398 pci_unmap_srb(acb
, srb
);
1400 srb_free_insert(acb
, srb
);
1401 dprintkl(KERN_DEBUG
, "eh_abort: Command was waiting\n");
1402 cmd
->result
= DID_ABORT
<< 16;
1405 srb
= find_cmd(cmd
, &dcb
->srb_going_list
);
1407 dprintkl(KERN_DEBUG
, "eh_abort: Command in progress");
1408 /* XXX: Should abort the command here */
1410 dprintkl(KERN_DEBUG
, "eh_abort: Command not found");
1417 static void build_sdtr(struct AdapterCtlBlk
*acb
, struct DeviceCtlBlk
*dcb
,
1418 struct ScsiReqBlk
*srb
)
1420 u8
*ptr
= srb
->msgout_buf
+ srb
->msg_count
;
1421 if (srb
->msg_count
> 1) {
1423 "build_sdtr: msgout_buf BUSY (%i: %02x %02x)\n",
1424 srb
->msg_count
, srb
->msgout_buf
[0],
1425 srb
->msgout_buf
[1]);
1428 if (!(dcb
->dev_mode
& NTC_DO_SYNC_NEGO
)) {
1429 dcb
->sync_offset
= 0;
1430 dcb
->min_nego_period
= 200 >> 2;
1431 } else if (dcb
->sync_offset
== 0)
1432 dcb
->sync_offset
= SYNC_NEGO_OFFSET
;
1434 *ptr
++ = MSG_EXTENDED
; /* (01h) */
1435 *ptr
++ = 3; /* length */
1436 *ptr
++ = EXTENDED_SDTR
; /* (01h) */
1437 *ptr
++ = dcb
->min_nego_period
; /* Transfer period (in 4ns) */
1438 *ptr
++ = dcb
->sync_offset
; /* Transfer period (max. REQ/ACK dist) */
1439 srb
->msg_count
+= 5;
1440 srb
->state
|= SRB_DO_SYNC_NEGO
;
1445 static void build_wdtr(struct AdapterCtlBlk
*acb
, struct DeviceCtlBlk
*dcb
,
1446 struct ScsiReqBlk
*srb
)
1448 u8 wide
= ((dcb
->dev_mode
& NTC_DO_WIDE_NEGO
) &
1449 (acb
->config
& HCC_WIDE_CARD
)) ? 1 : 0;
1450 u8
*ptr
= srb
->msgout_buf
+ srb
->msg_count
;
1451 if (srb
->msg_count
> 1) {
1453 "build_wdtr: msgout_buf BUSY (%i: %02x %02x)\n",
1454 srb
->msg_count
, srb
->msgout_buf
[0],
1455 srb
->msgout_buf
[1]);
1458 *ptr
++ = MSG_EXTENDED
; /* (01h) */
1459 *ptr
++ = 2; /* length */
1460 *ptr
++ = EXTENDED_WDTR
; /* (03h) */
1462 srb
->msg_count
+= 4;
1463 srb
->state
|= SRB_DO_WIDE_NEGO
;
1468 /* Timer to work around chip flaw: When selecting and the bus is
1469 * busy, we sometimes miss a Selection timeout IRQ */
1470 void selection_timeout_missed(unsigned long ptr
);
1471 /* Sets the timer to wake us up */
1472 static void selto_timer(struct AdapterCtlBlk
*acb
)
1474 if (timer_pending(&acb
->selto_timer
))
1476 acb
->selto_timer
.function
= selection_timeout_missed
;
1477 acb
->selto_timer
.data
= (unsigned long) acb
;
1479 (jiffies
+ HZ
, acb
->scsi_host
->last_reset
+ HZ
/ 2))
1480 acb
->selto_timer
.expires
=
1481 acb
->scsi_host
->last_reset
+ HZ
/ 2 + 1;
1483 acb
->selto_timer
.expires
= jiffies
+ HZ
+ 1;
1484 add_timer(&acb
->selto_timer
);
1488 void selection_timeout_missed(unsigned long ptr
)
1490 unsigned long flags
;
1491 struct AdapterCtlBlk
*acb
= (struct AdapterCtlBlk
*)ptr
;
1492 struct ScsiReqBlk
*srb
;
1493 dprintkl(KERN_DEBUG
, "Chip forgot to produce SelTO IRQ!\n");
1494 if (!acb
->active_dcb
|| !acb
->active_dcb
->active_srb
) {
1495 dprintkl(KERN_DEBUG
, "... but no cmd pending? Oops!\n");
1498 DC395x_LOCK_IO(acb
->scsi_host
, flags
);
1499 srb
= acb
->active_dcb
->active_srb
;
1501 DC395x_UNLOCK_IO(acb
->scsi_host
, flags
);
1506 static u8
start_scsi(struct AdapterCtlBlk
* acb
, struct DeviceCtlBlk
* dcb
,
1507 struct ScsiReqBlk
* srb
)
1509 u16 s_stat2
, return_code
;
1510 u8 s_stat
, scsicommand
, i
, identify_message
;
1512 dprintkdbg(DBG_0
, "start_scsi: (pid#%li) <%02i-%i> srb=%p\n",
1513 srb
->cmd
->pid
, dcb
->target_id
, dcb
->target_lun
, srb
);
1515 srb
->tag_number
= TAG_NONE
; /* acb->tag_max_num: had error read in eeprom */
1517 s_stat
= DC395x_read8(acb
, TRM_S1040_SCSI_SIGNAL
);
1519 s_stat2
= DC395x_read16(acb
, TRM_S1040_SCSI_STATUS
);
1521 if (s_stat
& 0x20 /* s_stat2 & 0x02000 */ ) {
1522 dprintkdbg(DBG_KG
, "start_scsi: (pid#%li) BUSY %02x %04x\n",
1523 srb
->cmd
->pid
, s_stat
, s_stat2
);
1527 * We could, BUT: Sometimes the TRM_S1040 misses to produce a Selection
1528 * Timeout, a Disconnect or a Reselction IRQ, so we would be screwed!
1529 * (This is likely to be a bug in the hardware. Obviously, most people
1530 * only have one initiator per SCSI bus.)
1531 * Instead let this fail and have the timer make sure the command is
1532 * tried again after a short time
1534 /*selto_timer (acb); */
1538 if (acb
->active_dcb
) {
1539 dprintkl(KERN_DEBUG
, "start_scsi: (pid#%li) Attempt to start a"
1540 "command while another command (pid#%li) is active.",
1542 acb
->active_dcb
->active_srb
?
1543 acb
->active_dcb
->active_srb
->cmd
->pid
: 0);
1546 if (DC395x_read16(acb
, TRM_S1040_SCSI_STATUS
) & SCSIINTERRUPT
) {
1547 dprintkdbg(DBG_KG
, "start_scsi: (pid#%li) Failed (busy)\n",
1551 /* Allow starting of SCSI commands half a second before we allow the mid-level
1552 * to queue them again after a reset */
1553 if (time_before(jiffies
, acb
->scsi_host
->last_reset
- HZ
/ 2)) {
1554 dprintkdbg(DBG_KG
, "start_scsi: Refuse cmds (reset wait)\n");
1559 clear_fifo(acb
, "start_scsi");
1560 DC395x_write8(acb
, TRM_S1040_SCSI_HOSTID
, acb
->scsi_host
->this_id
);
1561 DC395x_write8(acb
, TRM_S1040_SCSI_TARGETID
, dcb
->target_id
);
1562 DC395x_write8(acb
, TRM_S1040_SCSI_SYNC
, dcb
->sync_period
);
1563 DC395x_write8(acb
, TRM_S1040_SCSI_OFFSET
, dcb
->sync_offset
);
1564 srb
->scsi_phase
= PH_BUS_FREE
; /* initial phase */
1566 identify_message
= dcb
->identify_msg
;
1567 /*DC395x_TRM_write8(TRM_S1040_SCSI_IDMSG, identify_message); */
1568 /* Don't allow disconnection for AUTO_REQSENSE: Cont.All.Cond.! */
1569 if (srb
->flag
& AUTO_REQSENSE
)
1570 identify_message
&= 0xBF;
1572 if (((srb
->cmd
->cmnd
[0] == INQUIRY
)
1573 || (srb
->cmd
->cmnd
[0] == REQUEST_SENSE
)
1574 || (srb
->flag
& AUTO_REQSENSE
))
1575 && (((dcb
->sync_mode
& WIDE_NEGO_ENABLE
)
1576 && !(dcb
->sync_mode
& WIDE_NEGO_DONE
))
1577 || ((dcb
->sync_mode
& SYNC_NEGO_ENABLE
)
1578 && !(dcb
->sync_mode
& SYNC_NEGO_DONE
)))
1579 && (dcb
->target_lun
== 0)) {
1580 srb
->msgout_buf
[0] = identify_message
;
1582 scsicommand
= SCMD_SEL_ATNSTOP
;
1583 srb
->state
= SRB_MSGOUT
;
1585 if (dcb
->sync_mode
& WIDE_NEGO_ENABLE
1586 && dcb
->inquiry7
& SCSI_INQ_WBUS16
) {
1587 build_wdtr(acb
, dcb
, srb
);
1591 if (dcb
->sync_mode
& SYNC_NEGO_ENABLE
1592 && dcb
->inquiry7
& SCSI_INQ_SYNC
) {
1593 build_sdtr(acb
, dcb
, srb
);
1596 if (dcb
->sync_mode
& WIDE_NEGO_ENABLE
1597 && dcb
->inquiry7
& SCSI_INQ_WBUS16
) {
1598 build_wdtr(acb
, dcb
, srb
);
1603 /* Send identify message */
1604 DC395x_write8(acb
, TRM_S1040_SCSI_FIFO
, identify_message
);
1606 scsicommand
= SCMD_SEL_ATN
;
1607 srb
->state
= SRB_START_
;
1608 #ifndef DC395x_NO_TAGQ
1609 if ((dcb
->sync_mode
& EN_TAG_QUEUEING
)
1610 && (identify_message
& 0xC0)) {
1611 /* Send Tag message */
1614 while (tag_mask
& dcb
->tag_mask
1615 && tag_number
<= dcb
->max_command
) {
1616 tag_mask
= tag_mask
<< 1;
1619 if (tag_number
>= dcb
->max_command
) {
1620 dprintkl(KERN_WARNING
, "start_scsi: (pid#%li) "
1621 "Out of tags target=<%02i-%i>)\n",
1622 srb
->cmd
->pid
, srb
->cmd
->device
->id
,
1623 srb
->cmd
->device
->lun
);
1624 srb
->state
= SRB_READY
;
1625 DC395x_write16(acb
, TRM_S1040_SCSI_CONTROL
,
1630 DC395x_write8(acb
, TRM_S1040_SCSI_FIFO
, MSG_SIMPLE_QTAG
);
1631 DC395x_write8(acb
, TRM_S1040_SCSI_FIFO
, tag_number
);
1632 dcb
->tag_mask
|= tag_mask
;
1633 srb
->tag_number
= tag_number
;
1634 scsicommand
= SCMD_SEL_ATN3
;
1635 srb
->state
= SRB_START_
;
1639 /* Send CDB ..command block ......... */
1640 dprintkdbg(DBG_KG
, "start_scsi: (pid#%li) <%02i-%i> cmnd=0x%02x tag=%i\n",
1641 srb
->cmd
->pid
, srb
->cmd
->device
->id
, srb
->cmd
->device
->lun
,
1642 srb
->cmd
->cmnd
[0], srb
->tag_number
);
1643 if (srb
->flag
& AUTO_REQSENSE
) {
1644 DC395x_write8(acb
, TRM_S1040_SCSI_FIFO
, REQUEST_SENSE
);
1645 DC395x_write8(acb
, TRM_S1040_SCSI_FIFO
, (dcb
->target_lun
<< 5));
1646 DC395x_write8(acb
, TRM_S1040_SCSI_FIFO
, 0);
1647 DC395x_write8(acb
, TRM_S1040_SCSI_FIFO
, 0);
1648 DC395x_write8(acb
, TRM_S1040_SCSI_FIFO
,
1649 sizeof(srb
->cmd
->sense_buffer
));
1650 DC395x_write8(acb
, TRM_S1040_SCSI_FIFO
, 0);
1652 ptr
= (u8
*)srb
->cmd
->cmnd
;
1653 for (i
= 0; i
< srb
->cmd
->cmd_len
; i
++)
1654 DC395x_write8(acb
, TRM_S1040_SCSI_FIFO
, *ptr
++);
1657 DC395x_write16(acb
, TRM_S1040_SCSI_CONTROL
,
1658 DO_HWRESELECT
| DO_DATALATCH
);
1659 if (DC395x_read16(acb
, TRM_S1040_SCSI_STATUS
) & SCSIINTERRUPT
) {
1661 * If start_scsi return 1:
1662 * we caught an interrupt (must be reset or reselection ... )
1663 * : Let's process it first!
1665 dprintkdbg(DBG_0
, "start_scsi: (pid#%li) <%02i-%i> Failed - busy\n",
1666 srb
->cmd
->pid
, dcb
->target_id
, dcb
->target_lun
);
1667 srb
->state
= SRB_READY
;
1671 /* This IRQ should NOT get lost, as we did not acknowledge it */
1674 * If start_scsi returns 0:
1675 * we know that the SCSI processor is free
1677 srb
->scsi_phase
= PH_BUS_FREE
; /* initial phase */
1678 dcb
->active_srb
= srb
;
1679 acb
->active_dcb
= dcb
;
1681 /* it's important for atn stop */
1682 DC395x_write16(acb
, TRM_S1040_SCSI_CONTROL
,
1683 DO_DATALATCH
| DO_HWRESELECT
);
1685 DC395x_write8(acb
, TRM_S1040_SCSI_COMMAND
, scsicommand
);
1691 #define DC395x_ENABLE_MSGOUT \
1692 DC395x_write16 (acb, TRM_S1040_SCSI_CONTROL, DO_SETATN); \
1693 srb->state |= SRB_MSGOUT
1697 static inline void enable_msgout_abort(struct AdapterCtlBlk
*acb
,
1698 struct ScsiReqBlk
*srb
)
1700 srb
->msgout_buf
[0] = ABORT
;
1702 DC395x_ENABLE_MSGOUT
;
1703 srb
->state
&= ~SRB_MSGIN
;
1704 srb
->state
|= SRB_MSGOUT
;
1709 * dc395x_handle_interrupt - Handle an interrupt that has been confirmed to
1710 * have been triggered for this card.
1712 * @acb: a pointer to the adpter control block
1713 * @scsi_status: the status return when we checked the card
1715 static void dc395x_handle_interrupt(struct AdapterCtlBlk
*acb
,
1718 struct DeviceCtlBlk
*dcb
;
1719 struct ScsiReqBlk
*srb
;
1722 unsigned long flags
;
1723 void (*dc395x_statev
)(struct AdapterCtlBlk
*, struct ScsiReqBlk
*,
1726 DC395x_LOCK_IO(acb
->scsi_host
, flags
);
1728 /* This acknowledges the IRQ */
1729 scsi_intstatus
= DC395x_read8(acb
, TRM_S1040_SCSI_INTSTATUS
);
1730 if ((scsi_status
& 0x2007) == 0x2002)
1731 dprintkl(KERN_DEBUG
,
1732 "COP after COP completed? %04x\n", scsi_status
);
1733 if (debug_enabled(DBG_KG
)) {
1734 if (scsi_intstatus
& INT_SELTIMEOUT
)
1735 dprintkdbg(DBG_KG
, "handle_interrupt: Selection timeout\n");
1737 /*dprintkl(KERN_DEBUG, "handle_interrupt: intstatus = 0x%02x ", scsi_intstatus); */
1739 if (timer_pending(&acb
->selto_timer
))
1740 del_timer(&acb
->selto_timer
);
1742 if (scsi_intstatus
& (INT_SELTIMEOUT
| INT_DISCONNECT
)) {
1743 disconnect(acb
); /* bus free interrupt */
1746 if (scsi_intstatus
& INT_RESELECTED
) {
1750 if (scsi_intstatus
& INT_SELECT
) {
1751 dprintkl(KERN_INFO
, "Host does not support target mode!\n");
1754 if (scsi_intstatus
& INT_SCSIRESET
) {
1755 scsi_reset_detect(acb
);
1758 if (scsi_intstatus
& (INT_BUSSERVICE
| INT_CMDDONE
)) {
1759 dcb
= acb
->active_dcb
;
1761 dprintkl(KERN_DEBUG
,
1762 "Oops: BusService (%04x %02x) w/o ActiveDCB!\n",
1763 scsi_status
, scsi_intstatus
);
1766 srb
= dcb
->active_srb
;
1767 if (dcb
->flag
& ABORT_DEV_
) {
1768 dprintkdbg(DBG_0
, "MsgOut Abort Device.....\n");
1769 enable_msgout_abort(acb
, srb
);
1772 /* software sequential machine */
1773 phase
= (u16
)srb
->scsi_phase
;
1777 * call dc395x_scsi_phase0[]... "phase entry"
1778 * handle every phase before start transfer
1780 /* data_out_phase0, phase:0 */
1781 /* data_in_phase0, phase:1 */
1782 /* command_phase0, phase:2 */
1783 /* status_phase0, phase:3 */
1784 /* nop0, phase:4 PH_BUS_FREE .. initial phase */
1785 /* nop0, phase:5 PH_BUS_FREE .. initial phase */
1786 /* msgout_phase0, phase:6 */
1787 /* msgin_phase0, phase:7 */
1788 dc395x_statev
= dc395x_scsi_phase0
[phase
];
1789 dc395x_statev(acb
, srb
, &scsi_status
);
1792 * if there were any exception occured scsi_status
1793 * will be modify to bus free phase new scsi_status
1794 * transfer out from ... previous dc395x_statev
1796 srb
->scsi_phase
= scsi_status
& PHASEMASK
;
1797 phase
= (u16
)scsi_status
& PHASEMASK
;
1800 * call dc395x_scsi_phase1[]... "phase entry" handle
1801 * every phase to do transfer
1803 /* data_out_phase1, phase:0 */
1804 /* data_in_phase1, phase:1 */
1805 /* command_phase1, phase:2 */
1806 /* status_phase1, phase:3 */
1807 /* nop1, phase:4 PH_BUS_FREE .. initial phase */
1808 /* nop1, phase:5 PH_BUS_FREE .. initial phase */
1809 /* msgout_phase1, phase:6 */
1810 /* msgin_phase1, phase:7 */
1811 dc395x_statev
= dc395x_scsi_phase1
[phase
];
1812 dc395x_statev(acb
, srb
, &scsi_status
);
1815 DC395x_UNLOCK_IO(acb
->scsi_host
, flags
);
1819 static irqreturn_t
dc395x_interrupt(int irq
, void *dev_id
,
1820 struct pt_regs
*regs
)
1822 struct AdapterCtlBlk
*acb
= (struct AdapterCtlBlk
*)dev_id
;
1825 irqreturn_t handled
= IRQ_NONE
;
1828 * Check for pending interupt
1830 scsi_status
= DC395x_read16(acb
, TRM_S1040_SCSI_STATUS
);
1831 dma_status
= DC395x_read8(acb
, TRM_S1040_DMA_STATUS
);
1832 if (scsi_status
& SCSIINTERRUPT
) {
1833 /* interupt pending - let's process it! */
1834 dc395x_handle_interrupt(acb
, scsi_status
);
1835 handled
= IRQ_HANDLED
;
1837 else if (dma_status
& 0x20) {
1838 /* Error from the DMA engine */
1839 dprintkl(KERN_INFO
, "Interrupt from DMA engine: 0x%02x!\n", dma_status
);
1841 dprintkl(KERN_INFO
, "This means DMA error! Try to handle ...\n");
1842 if (acb
->active_dcb
) {
1843 acb
->active_dcb
-> flag
|= ABORT_DEV_
;
1844 if (acb
->active_dcb
->active_srb
)
1845 enable_msgout_abort(acb
, acb
->active_dcb
->active_srb
);
1847 DC395x_write8(acb
, TRM_S1040_DMA_CONTROL
, ABORTXFER
| CLRXFIFO
);
1849 dprintkl(KERN_INFO
, "Ignoring DMA error (probably a bad thing) ...\n");
1852 handled
= IRQ_HANDLED
;
1859 static void msgout_phase0(struct AdapterCtlBlk
*acb
, struct ScsiReqBlk
*srb
,
1862 dprintkdbg(DBG_0
, "msgout_phase0: (pid#%li)\n", srb
->cmd
->pid
);
1863 if (srb
->state
& (SRB_UNEXPECT_RESEL
+ SRB_ABORT_SENT
))
1864 *pscsi_status
= PH_BUS_FREE
; /*.. initial phase */
1866 DC395x_write16(acb
, TRM_S1040_SCSI_CONTROL
, DO_DATALATCH
); /* it's important for atn stop */
1867 srb
->state
&= ~SRB_MSGOUT
;
1871 static void msgout_phase1(struct AdapterCtlBlk
*acb
, struct ScsiReqBlk
*srb
,
1876 dprintkdbg(DBG_0
, "msgout_phase1: (pid#%li)\n", srb
->cmd
->pid
);
1878 clear_fifo(acb
, "msgout_phase1");
1879 if (!(srb
->state
& SRB_MSGOUT
)) {
1880 srb
->state
|= SRB_MSGOUT
;
1881 dprintkl(KERN_DEBUG
,
1882 "msgout_phase1: (pid#%li) Phase unexpected\n",
1883 srb
->cmd
->pid
); /* So what ? */
1885 if (!srb
->msg_count
) {
1886 dprintkdbg(DBG_0
, "msgout_phase1: (pid#%li) NOP msg\n",
1888 DC395x_write8(acb
, TRM_S1040_SCSI_FIFO
, MSG_NOP
);
1889 DC395x_write16(acb
, TRM_S1040_SCSI_CONTROL
, DO_DATALATCH
); /* it's important for atn stop */
1890 DC395x_write8(acb
, TRM_S1040_SCSI_COMMAND
, SCMD_FIFO_OUT
);
1893 ptr
= (u8
*)srb
->msgout_buf
;
1894 for (i
= 0; i
< srb
->msg_count
; i
++)
1895 DC395x_write8(acb
, TRM_S1040_SCSI_FIFO
, *ptr
++);
1897 if (srb
->msgout_buf
[0] == MSG_ABORT
)
1898 srb
->state
= SRB_ABORT_SENT
;
1900 DC395x_write8(acb
, TRM_S1040_SCSI_COMMAND
, SCMD_FIFO_OUT
);
1904 static void command_phase0(struct AdapterCtlBlk
*acb
, struct ScsiReqBlk
*srb
,
1907 dprintkdbg(DBG_0
, "command_phase0: (pid#%li)\n", srb
->cmd
->pid
);
1908 DC395x_write16(acb
, TRM_S1040_SCSI_CONTROL
, DO_DATALATCH
);
1912 static void command_phase1(struct AdapterCtlBlk
*acb
, struct ScsiReqBlk
*srb
,
1915 struct DeviceCtlBlk
*dcb
;
1918 dprintkdbg(DBG_0
, "command_phase1: (pid#%li)\n", srb
->cmd
->pid
);
1920 clear_fifo(acb
, "command_phase1");
1921 DC395x_write16(acb
, TRM_S1040_SCSI_CONTROL
, DO_CLRATN
);
1922 if (!(srb
->flag
& AUTO_REQSENSE
)) {
1923 ptr
= (u8
*)srb
->cmd
->cmnd
;
1924 for (i
= 0; i
< srb
->cmd
->cmd_len
; i
++) {
1925 DC395x_write8(acb
, TRM_S1040_SCSI_FIFO
, *ptr
);
1929 DC395x_write8(acb
, TRM_S1040_SCSI_FIFO
, REQUEST_SENSE
);
1930 dcb
= acb
->active_dcb
;
1932 DC395x_write8(acb
, TRM_S1040_SCSI_FIFO
, (dcb
->target_lun
<< 5));
1933 DC395x_write8(acb
, TRM_S1040_SCSI_FIFO
, 0);
1934 DC395x_write8(acb
, TRM_S1040_SCSI_FIFO
, 0);
1935 DC395x_write8(acb
, TRM_S1040_SCSI_FIFO
,
1936 sizeof(srb
->cmd
->sense_buffer
));
1937 DC395x_write8(acb
, TRM_S1040_SCSI_FIFO
, 0);
1939 srb
->state
|= SRB_COMMAND
;
1940 /* it's important for atn stop */
1941 DC395x_write16(acb
, TRM_S1040_SCSI_CONTROL
, DO_DATALATCH
);
1943 DC395x_write8(acb
, TRM_S1040_SCSI_COMMAND
, SCMD_FIFO_OUT
);
1948 * Verify that the remaining space in the hw sg lists is the same as
1949 * the count of remaining bytes in srb->total_xfer_length
1951 static void sg_verify_length(struct ScsiReqBlk
*srb
)
1953 if (debug_enabled(DBG_SG
)) {
1955 unsigned idx
= srb
->sg_index
;
1956 struct SGentry
*psge
= srb
->segment_x
+ idx
;
1957 for (; idx
< srb
->sg_count
; psge
++, idx
++)
1958 len
+= psge
->length
;
1959 if (len
!= srb
->total_xfer_length
)
1961 "Inconsistent SRB S/G lengths (Tot=%i, Count=%i) !!\n",
1962 srb
->total_xfer_length
, len
);
1968 * Compute the next Scatter Gather list index and adjust its length
1969 * and address if necessary; also compute virt_addr
1971 static void sg_update_list(struct ScsiReqBlk
*srb
, u32 left
)
1974 struct scatterlist
*sg
;
1975 struct scsi_cmnd
*cmd
= srb
->cmd
;
1976 int segment
= cmd
->use_sg
;
1977 u32 xferred
= srb
->total_xfer_length
- left
; /* bytes transfered */
1978 struct SGentry
*psge
= srb
->segment_x
+ srb
->sg_index
;
1979 void **virt
= srb
->virt_map
;
1982 "sg_update_list: Transfered %i of %i bytes, %i remain\n",
1983 xferred
, srb
->total_xfer_length
, left
);
1985 /* nothing to update since we did not transfer any data */
1989 sg_verify_length(srb
);
1990 srb
->total_xfer_length
= left
; /* update remaining count */
1991 for (idx
= srb
->sg_index
; idx
< srb
->sg_count
; idx
++) {
1992 if (xferred
>= psge
->length
) {
1993 /* Complete SG entries done */
1994 xferred
-= psge
->length
;
1996 /* Partial SG entry done */
1997 psge
->length
-= xferred
;
1998 psge
->address
+= xferred
;
1999 srb
->sg_index
= idx
;
2000 pci_dma_sync_single_for_device(srb
->dcb
->
2009 sg_verify_length(srb
);
2011 /* we need the corresponding virtual address */
2013 srb
->virt_addr
+= xferred
;
2017 /* We have to walk the scatterlist to find it */
2018 sg
= (struct scatterlist
*)cmd
->request_buffer
;
2021 unsigned long mask
=
2022 ~((unsigned long)sg
->length
- 1) & PAGE_MASK
;
2023 if ((sg_dma_address(sg
) & mask
) == (psge
->address
& mask
)) {
2024 srb
->virt_addr
= virt
[idx
] + (psge
->address
& ~PAGE_MASK
);
2031 dprintkl(KERN_ERR
, "sg_update_list: sg_to_virt failed\n");
2032 srb
->virt_addr
= NULL
;
2037 * We have transfered a single byte (PIO mode?) and need to update
2038 * the count of bytes remaining (total_xfer_length) and update the sg
2039 * entry to either point to next byte in the current sg entry, or of
2040 * already at the end to point to the start of the next sg entry
2042 static void sg_subtract_one(struct ScsiReqBlk
*srb
)
2044 srb
->total_xfer_length
--;
2045 srb
->segment_x
[srb
->sg_index
].length
--;
2046 if (srb
->total_xfer_length
&&
2047 !srb
->segment_x
[srb
->sg_index
].length
) {
2048 if (debug_enabled(DBG_PIO
))
2049 printk(" (next segment)");
2051 sg_update_list(srb
, srb
->total_xfer_length
);
2057 * cleanup_after_transfer
2059 * Makes sure, DMA and SCSI engine are empty, after the transfer has finished
2060 * KG: Currently called from StatusPhase1 ()
2061 * Should probably also be called from other places
2062 * Best might be to call it in DataXXPhase0, if new phase will differ
2064 static void cleanup_after_transfer(struct AdapterCtlBlk
*acb
,
2065 struct ScsiReqBlk
*srb
)
2067 /*DC395x_write8 (TRM_S1040_DMA_STATUS, FORCEDMACOMP); */
2068 if (DC395x_read16(acb
, TRM_S1040_DMA_COMMAND
) & 0x0001) { /* read */
2069 if (!(DC395x_read8(acb
, TRM_S1040_SCSI_FIFOCNT
) & 0x40))
2070 clear_fifo(acb
, "cleanup/in");
2071 if (!(DC395x_read8(acb
, TRM_S1040_DMA_FIFOSTAT
) & 0x80))
2072 DC395x_write8(acb
, TRM_S1040_DMA_CONTROL
, CLRXFIFO
);
2073 } else { /* write */
2074 if (!(DC395x_read8(acb
, TRM_S1040_DMA_FIFOSTAT
) & 0x80))
2075 DC395x_write8(acb
, TRM_S1040_DMA_CONTROL
, CLRXFIFO
);
2076 if (!(DC395x_read8(acb
, TRM_S1040_SCSI_FIFOCNT
) & 0x40))
2077 clear_fifo(acb
, "cleanup/out");
2079 DC395x_write16(acb
, TRM_S1040_SCSI_CONTROL
, DO_DATALATCH
);
2084 * Those no of bytes will be transfered w/ PIO through the SCSI FIFO
2085 * Seems to be needed for unknown reasons; could be a hardware bug :-(
2087 #define DC395x_LASTPIO 4
2090 static void data_out_phase0(struct AdapterCtlBlk
*acb
, struct ScsiReqBlk
*srb
,
2093 struct DeviceCtlBlk
*dcb
= srb
->dcb
;
2094 u16 scsi_status
= *pscsi_status
;
2095 u32 d_left_counter
= 0;
2096 dprintkdbg(DBG_0
, "data_out_phase0: (pid#%li) <%02i-%i>\n",
2097 srb
->cmd
->pid
, srb
->cmd
->device
->id
, srb
->cmd
->device
->lun
);
2100 * KG: We need to drain the buffers before we draw any conclusions!
2101 * This means telling the DMA to push the rest into SCSI, telling
2102 * SCSI to push the rest to the bus.
2103 * However, the device might have been the one to stop us (phase
2104 * change), and the data in transit just needs to be accounted so
2105 * it can be retransmitted.)
2108 * KG: Stop DMA engine pushing more data into the SCSI FIFO
2109 * If we need more data, the DMA SG list will be freshly set up, anyway
2111 dprintkdbg(DBG_PIO
, "data_out_phase0: "
2112 "DMA{fifcnt=0x%02x fifostat=0x%02x} "
2113 "SCSI{fifocnt=0x%02x cnt=0x%06x status=0x%04x} total=0x%06x\n",
2114 DC395x_read8(acb
, TRM_S1040_DMA_FIFOCNT
),
2115 DC395x_read8(acb
, TRM_S1040_DMA_FIFOSTAT
),
2116 DC395x_read8(acb
, TRM_S1040_SCSI_FIFOCNT
),
2117 DC395x_read32(acb
, TRM_S1040_SCSI_COUNTER
), scsi_status
,
2118 srb
->total_xfer_length
);
2119 DC395x_write8(acb
, TRM_S1040_DMA_CONTROL
, STOPDMAXFER
| CLRXFIFO
);
2121 if (!(srb
->state
& SRB_XFERPAD
)) {
2122 if (scsi_status
& PARITYERROR
)
2123 srb
->status
|= PARITY_ERROR
;
2126 * KG: Right, we can't just rely on the SCSI_COUNTER, because this
2127 * is the no of bytes it got from the DMA engine not the no it
2128 * transferred successfully to the device. (And the difference could
2129 * be as much as the FIFO size, I guess ...)
2131 if (!(scsi_status
& SCSIXFERDONE
)) {
2133 * when data transfer from DMA FIFO to SCSI FIFO
2134 * if there was some data left in SCSI FIFO
2137 (u32
)(DC395x_read8(acb
, TRM_S1040_SCSI_FIFOCNT
) &
2139 if (dcb
->sync_period
& WIDE_SYNC
)
2140 d_left_counter
<<= 1;
2142 dprintkdbg(DBG_KG
, "data_out_phase0: FIFO contains %i %s\n"
2143 "SCSI{fifocnt=0x%02x cnt=0x%08x} "
2144 "DMA{fifocnt=0x%04x cnt=0x%02x ctr=0x%08x}\n",
2145 DC395x_read8(acb
, TRM_S1040_SCSI_FIFOCNT
),
2146 (dcb
->sync_period
& WIDE_SYNC
) ? "words" : "bytes",
2147 DC395x_read8(acb
, TRM_S1040_SCSI_FIFOCNT
),
2148 DC395x_read32(acb
, TRM_S1040_SCSI_COUNTER
),
2149 DC395x_read8(acb
, TRM_S1040_DMA_FIFOCNT
),
2150 DC395x_read8(acb
, TRM_S1040_DMA_FIFOSTAT
),
2151 DC395x_read32(acb
, TRM_S1040_DMA_CXCNT
));
2154 * calculate all the residue data that not yet transfered
2155 * SCSI transfer counter + left in SCSI FIFO data
2157 * .....TRM_S1040_SCSI_COUNTER (24bits)
2158 * The counter always decrement by one for every SCSI byte transfer.
2159 * .....TRM_S1040_SCSI_FIFOCNT ( 5bits)
2160 * The counter is SCSI FIFO offset counter (in units of bytes or! words)
2162 if (srb
->total_xfer_length
> DC395x_LASTPIO
)
2164 DC395x_read32(acb
, TRM_S1040_SCSI_COUNTER
);
2166 /* Is this a good idea? */
2167 /*clear_fifo(acb, "DOP1"); */
2168 /* KG: What is this supposed to be useful for? WIDE padding stuff? */
2169 if (d_left_counter
== 1 && dcb
->sync_period
& WIDE_SYNC
2170 && srb
->cmd
->request_bufflen
% 2) {
2173 "data_out_phase0: Discard 1 byte (0x%02x)\n",
2177 * KG: Oops again. Same thinko as above: The SCSI might have been
2178 * faster than the DMA engine, so that it ran out of data.
2179 * In that case, we have to do just nothing!
2180 * But: Why the interrupt: No phase change. No XFERCNT_2_ZERO. Or?
2183 * KG: This is nonsense: We have been WRITING data to the bus
2184 * If the SCSI engine has no bytes left, how should the DMA engine?
2186 if (d_left_counter
== 0) {
2187 srb
->total_xfer_length
= 0;
2190 * if transfer not yet complete
2191 * there were some data residue in SCSI FIFO or
2192 * SCSI transfer counter not empty
2195 srb
->total_xfer_length
- d_left_counter
;
2197 (dcb
->sync_period
& WIDE_SYNC
) ? 2 : 1;
2198 sg_update_list(srb
, d_left_counter
);
2199 /* KG: Most ugly hack! Apparently, this works around a chip bug */
2200 if ((srb
->segment_x
[srb
->sg_index
].length
==
2201 diff
&& srb
->cmd
->use_sg
)
2202 || ((oldxferred
& ~PAGE_MASK
) ==
2205 dprintkl(KERN_INFO
, "data_out_phase0: "
2206 "Work around chip bug (%i)?\n", diff
);
2208 srb
->total_xfer_length
- diff
;
2209 sg_update_list(srb
, d_left_counter
);
2210 /*srb->total_xfer_length -= diff; */
2211 /*srb->virt_addr += diff; */
2212 /*if (srb->cmd->use_sg) */
2213 /* srb->sg_index++; */
2217 if ((*pscsi_status
& PHASEMASK
) != PH_DATA_OUT
) {
2218 cleanup_after_transfer(acb
, srb
);
2223 static void data_out_phase1(struct AdapterCtlBlk
*acb
, struct ScsiReqBlk
*srb
,
2226 dprintkdbg(DBG_0
, "data_out_phase1: (pid#%li) <%02i-%i>\n",
2227 srb
->cmd
->pid
, srb
->cmd
->device
->id
, srb
->cmd
->device
->lun
);
2228 clear_fifo(acb
, "data_out_phase1");
2229 /* do prepare before transfer when data out phase */
2230 data_io_transfer(acb
, srb
, XFERDATAOUT
);
2234 static void data_in_phase0(struct AdapterCtlBlk
*acb
, struct ScsiReqBlk
*srb
,
2237 u16 scsi_status
= *pscsi_status
;
2238 u32 d_left_counter
= 0;
2239 dprintkdbg(DBG_0
, "data_in_phase0: (pid#%li) <%02i-%i>\n",
2240 srb
->cmd
->pid
, srb
->cmd
->device
->id
, srb
->cmd
->device
->lun
);
2243 * KG: DataIn is much more tricky than DataOut. When the device is finished
2244 * and switches to another phase, the SCSI engine should be finished too.
2245 * But: There might still be bytes left in its FIFO to be fetched by the DMA
2246 * engine and transferred to memory.
2247 * We should wait for the FIFOs to be emptied by that (is there any way to
2248 * enforce this?) and then stop the DMA engine, because it might think, that
2249 * there are more bytes to follow. Yes, the device might disconnect prior to
2250 * having all bytes transferred!
2251 * Also we should make sure that all data from the DMA engine buffer's really
2252 * made its way to the system memory! Some documentation on this would not
2253 * seem to be a bad idea, actually.
2255 if (!(srb
->state
& SRB_XFERPAD
)) {
2256 if (scsi_status
& PARITYERROR
) {
2257 dprintkl(KERN_INFO
, "data_in_phase0: (pid#%li) "
2258 "Parity Error\n", srb
->cmd
->pid
);
2259 srb
->status
|= PARITY_ERROR
;
2262 * KG: We should wait for the DMA FIFO to be empty ...
2263 * but: it would be better to wait first for the SCSI FIFO and then the
2264 * the DMA FIFO to become empty? How do we know, that the device not already
2265 * sent data to the FIFO in a MsgIn phase, eg.?
2267 if (!(DC395x_read8(acb
, TRM_S1040_DMA_FIFOSTAT
) & 0x80)) {
2270 dprintkl(KERN_DEBUG
,
2271 "DIP0: Wait for DMA FIFO to flush ...\n");
2272 /*DC395x_write8 (TRM_S1040_DMA_CONTROL, STOPDMAXFER); */
2273 /*DC395x_write32 (TRM_S1040_SCSI_COUNTER, 7); */
2274 /*DC395x_write8 (TRM_S1040_SCSI_COMMAND, SCMD_DMA_IN); */
2276 (DC395x_read16(acb
, TRM_S1040_DMA_FIFOSTAT
) &
2278 if (ctr
< 6000000 - 1)
2280 "DIP0: Had to wait for DMA ...\n");
2283 "Deadlock in DIP0 waiting for DMA FIFO empty!!\n");
2284 /*DC395x_write32 (TRM_S1040_SCSI_COUNTER, 0); */
2286 dprintkdbg(DBG_KG
, "data_in_phase0: "
2287 "DMA{fifocnt=0x%02x fifostat=0x%02x}\n",
2288 DC395x_read8(acb
, TRM_S1040_DMA_FIFOCNT
),
2289 DC395x_read8(acb
, TRM_S1040_DMA_FIFOSTAT
));
2291 /* Now: Check remainig data: The SCSI counters should tell us ... */
2292 d_left_counter
= DC395x_read32(acb
, TRM_S1040_SCSI_COUNTER
)
2293 + ((DC395x_read8(acb
, TRM_S1040_SCSI_FIFOCNT
) & 0x1f)
2294 << ((srb
->dcb
->sync_period
& WIDE_SYNC
) ? 1 :
2296 dprintkdbg(DBG_KG
, "data_in_phase0: "
2297 "SCSI{fifocnt=0x%02x%s ctr=0x%08x} "
2298 "DMA{fifocnt=0x%02x fifostat=0x%02x ctr=0x%08x} "
2299 "Remain{totxfer=%i scsi_fifo+ctr=%i}\n",
2300 DC395x_read8(acb
, TRM_S1040_SCSI_FIFOCNT
),
2301 (srb
->dcb
->sync_period
& WIDE_SYNC
) ? "words" : "bytes",
2302 DC395x_read32(acb
, TRM_S1040_SCSI_COUNTER
),
2303 DC395x_read8(acb
, TRM_S1040_DMA_FIFOCNT
),
2304 DC395x_read8(acb
, TRM_S1040_DMA_FIFOSTAT
),
2305 DC395x_read32(acb
, TRM_S1040_DMA_CXCNT
),
2306 srb
->total_xfer_length
, d_left_counter
);
2308 /* KG: Less than or equal to 4 bytes can not be transfered via DMA, it seems. */
2310 && srb
->total_xfer_length
<= DC395x_LASTPIO
) {
2311 /*u32 addr = (srb->segment_x[srb->sg_index].address); */
2312 /*sg_update_list (srb, d_left_counter); */
2313 dprintkdbg(DBG_PIO
, "data_in_phase0: PIO (%i %s) to "
2314 "%p for remaining %i bytes:",
2315 DC395x_read8(acb
, TRM_S1040_SCSI_FIFOCNT
) & 0x1f,
2316 (srb
->dcb
->sync_period
& WIDE_SYNC
) ?
2319 srb
->total_xfer_length
);
2320 if (srb
->dcb
->sync_period
& WIDE_SYNC
)
2321 DC395x_write8(acb
, TRM_S1040_SCSI_CONFIG2
,
2323 while (DC395x_read8(acb
, TRM_S1040_SCSI_FIFOCNT
) != 0x40) {
2324 u8 byte
= DC395x_read8(acb
, TRM_S1040_SCSI_FIFO
);
2325 *(srb
->virt_addr
)++ = byte
;
2326 if (debug_enabled(DBG_PIO
))
2327 printk(" %02x", byte
);
2329 sg_subtract_one(srb
);
2331 if (srb
->dcb
->sync_period
& WIDE_SYNC
) {
2333 /* Read the last byte ... */
2334 if (srb
->total_xfer_length
> 0) {
2335 u8 byte
= DC395x_read8(acb
, TRM_S1040_SCSI_FIFO
);
2336 *(srb
->virt_addr
)++ = byte
;
2337 srb
->total_xfer_length
--;
2338 if (debug_enabled(DBG_PIO
))
2339 printk(" %02x", byte
);
2342 DC395x_write8(acb
, TRM_S1040_SCSI_CONFIG2
, 0);
2344 /*printk(" %08x", *(u32*)(bus_to_virt (addr))); */
2345 /*srb->total_xfer_length = 0; */
2346 if (debug_enabled(DBG_PIO
))
2349 #endif /* DC395x_LASTPIO */
2353 * KG: This was in DATAOUT. Does it also belong here?
2354 * Nobody seems to know what counter and fifo_cnt count exactly ...
2356 if (!(scsi_status
& SCSIXFERDONE
)) {
2358 * when data transfer from DMA FIFO to SCSI FIFO
2359 * if there was some data left in SCSI FIFO
2362 (u32
)(DC395x_read8(acb
, TRM_S1040_SCSI_FIFOCNT
) &
2364 if (srb
->dcb
->sync_period
& WIDE_SYNC
)
2365 d_left_counter
<<= 1;
2367 * if WIDE scsi SCSI FIFOCNT unit is word !!!
2369 * KG: Seems to be correct ...
2373 /* KG: This should not be needed any more! */
2374 if (d_left_counter
== 0
2375 || (scsi_status
& SCSIXFERCNT_2_ZERO
)) {
2381 DC395x_read8(acb
, TRM_S1040_DMA_STATUS
);
2382 } while (!(TempDMAstatus
& DMAXFERCOMP
) && --ctr
);
2385 "Deadlock in DataInPhase0 waiting for DMA!!\n");
2386 srb
->total_xfer_length
= 0;
2388 srb
->total_xfer_length
= d_left_counter
;
2389 } else { /* phase changed */
2392 * when a transfer not yet complete
2393 * but be disconnected by target
2394 * if transfer not yet complete
2395 * there were some data residue in SCSI FIFO or
2396 * SCSI transfer counter not empty
2398 sg_update_list(srb
, d_left_counter
);
2401 /* KG: The target may decide to disconnect: Empty FIFO before! */
2402 if ((*pscsi_status
& PHASEMASK
) != PH_DATA_IN
) {
2403 cleanup_after_transfer(acb
, srb
);
2408 static void data_in_phase1(struct AdapterCtlBlk
*acb
, struct ScsiReqBlk
*srb
,
2411 dprintkdbg(DBG_0
, "data_in_phase1: (pid#%li) <%02i-%i>\n",
2412 srb
->cmd
->pid
, srb
->cmd
->device
->id
, srb
->cmd
->device
->lun
);
2413 data_io_transfer(acb
, srb
, XFERDATAIN
);
2417 static void data_io_transfer(struct AdapterCtlBlk
*acb
,
2418 struct ScsiReqBlk
*srb
, u16 io_dir
)
2420 struct DeviceCtlBlk
*dcb
= srb
->dcb
;
2423 "data_io_transfer: (pid#%li) <%02i-%i> %c len=%i, sg=(%i/%i)\n",
2424 srb
->cmd
->pid
, srb
->cmd
->device
->id
, srb
->cmd
->device
->lun
,
2425 ((io_dir
& DMACMD_DIR
) ? 'r' : 'w'),
2426 srb
->total_xfer_length
, srb
->sg_index
, srb
->sg_count
);
2427 if (srb
== acb
->tmp_srb
)
2428 dprintkl(KERN_ERR
, "data_io_transfer: Using tmp_srb!\n");
2429 if (srb
->sg_index
>= srb
->sg_count
) {
2430 /* can't happen? out of bounds error */
2434 if (srb
->total_xfer_length
> DC395x_LASTPIO
) {
2435 u8 dma_status
= DC395x_read8(acb
, TRM_S1040_DMA_STATUS
);
2437 * KG: What should we do: Use SCSI Cmd 0x90/0x92?
2438 * Maybe, even ABORTXFER would be appropriate
2440 if (dma_status
& XFERPENDING
) {
2441 dprintkl(KERN_DEBUG
, "data_io_transfer: Xfer pending! "
2442 "Expect trouble!\n");
2443 dump_register_info(acb
, dcb
, srb
);
2444 DC395x_write8(acb
, TRM_S1040_DMA_CONTROL
, CLRXFIFO
);
2446 /* clear_fifo(acb, "IO"); */
2448 * load what physical address of Scatter/Gather list table
2449 * want to be transfer
2451 srb
->state
|= SRB_DATA_XFER
;
2452 DC395x_write32(acb
, TRM_S1040_DMA_XHIGHADDR
, 0);
2453 if (srb
->cmd
->use_sg
) { /* with S/G */
2454 io_dir
|= DMACMD_SG
;
2455 DC395x_write32(acb
, TRM_S1040_DMA_XLOWADDR
,
2457 sizeof(struct SGentry
) *
2459 /* load how many bytes in the sg list table */
2460 DC395x_write32(acb
, TRM_S1040_DMA_XCNT
,
2461 ((u32
)(srb
->sg_count
-
2462 srb
->sg_index
) << 3));
2463 } else { /* without S/G */
2464 io_dir
&= ~DMACMD_SG
;
2465 DC395x_write32(acb
, TRM_S1040_DMA_XLOWADDR
,
2466 srb
->segment_x
[0].address
);
2467 DC395x_write32(acb
, TRM_S1040_DMA_XCNT
,
2468 srb
->segment_x
[0].length
);
2470 /* load total transfer length (24bits) max value 16Mbyte */
2471 DC395x_write32(acb
, TRM_S1040_SCSI_COUNTER
,
2472 srb
->total_xfer_length
);
2473 DC395x_write16(acb
, TRM_S1040_SCSI_CONTROL
, DO_DATALATCH
); /* it's important for atn stop */
2474 if (io_dir
& DMACMD_DIR
) { /* read */
2475 DC395x_write8(acb
, TRM_S1040_SCSI_COMMAND
,
2477 DC395x_write16(acb
, TRM_S1040_DMA_COMMAND
, io_dir
);
2479 DC395x_write16(acb
, TRM_S1040_DMA_COMMAND
, io_dir
);
2480 DC395x_write8(acb
, TRM_S1040_SCSI_COMMAND
,
2486 else if (srb
->total_xfer_length
> 0) { /* The last four bytes: Do PIO */
2488 * load what physical address of Scatter/Gather list table
2489 * want to be transfer
2491 srb
->state
|= SRB_DATA_XFER
;
2492 /* load total transfer length (24bits) max value 16Mbyte */
2493 DC395x_write32(acb
, TRM_S1040_SCSI_COUNTER
,
2494 srb
->total_xfer_length
);
2495 DC395x_write16(acb
, TRM_S1040_SCSI_CONTROL
, DO_DATALATCH
); /* it's important for atn stop */
2496 if (io_dir
& DMACMD_DIR
) { /* read */
2497 DC395x_write8(acb
, TRM_S1040_SCSI_COMMAND
,
2499 } else { /* write */
2500 int ln
= srb
->total_xfer_length
;
2501 if (srb
->dcb
->sync_period
& WIDE_SYNC
)
2502 DC395x_write8(acb
, TRM_S1040_SCSI_CONFIG2
,
2505 "data_io_transfer: PIO %i bytes from %p:",
2506 srb
->total_xfer_length
, srb
->virt_addr
);
2508 while (srb
->total_xfer_length
) {
2509 if (debug_enabled(DBG_PIO
))
2510 printk(" %02x", (unsigned char) *(srb
->virt_addr
));
2512 DC395x_write8(acb
, TRM_S1040_SCSI_FIFO
,
2513 *(srb
->virt_addr
)++);
2515 sg_subtract_one(srb
);
2517 if (srb
->dcb
->sync_period
& WIDE_SYNC
) {
2519 DC395x_write8(acb
, TRM_S1040_SCSI_FIFO
, 0);
2520 if (debug_enabled(DBG_PIO
))
2523 DC395x_write8(acb
, TRM_S1040_SCSI_CONFIG2
, 0);
2525 /*DC395x_write32(acb, TRM_S1040_SCSI_COUNTER, ln); */
2526 if (debug_enabled(DBG_PIO
))
2528 DC395x_write8(acb
, TRM_S1040_SCSI_COMMAND
,
2532 #endif /* DC395x_LASTPIO */
2533 else { /* xfer pad */
2534 u8 data
= 0, data2
= 0;
2535 if (srb
->sg_count
) {
2536 srb
->adapter_status
= H_OVER_UNDER_RUN
;
2537 srb
->status
|= OVER_RUN
;
2540 * KG: despite the fact that we are using 16 bits I/O ops
2541 * the SCSI FIFO is only 8 bits according to the docs
2542 * (we can set bit 1 in 0x8f to serialize FIFO access ...)
2544 if (dcb
->sync_period
& WIDE_SYNC
) {
2545 DC395x_write32(acb
, TRM_S1040_SCSI_COUNTER
, 2);
2546 DC395x_write8(acb
, TRM_S1040_SCSI_CONFIG2
,
2548 if (io_dir
& DMACMD_DIR
) {
2549 data
= DC395x_read8(acb
, TRM_S1040_SCSI_FIFO
);
2550 data2
= DC395x_read8(acb
, TRM_S1040_SCSI_FIFO
);
2552 /* Danger, Robinson: If you find KGs
2553 * scattered over the wide disk, the driver
2554 * or chip is to blame :-( */
2555 DC395x_write8(acb
, TRM_S1040_SCSI_FIFO
, 'K');
2556 DC395x_write8(acb
, TRM_S1040_SCSI_FIFO
, 'G');
2558 DC395x_write8(acb
, TRM_S1040_SCSI_CONFIG2
, 0);
2560 DC395x_write32(acb
, TRM_S1040_SCSI_COUNTER
, 1);
2561 /* Danger, Robinson: If you find a collection of Ks on your disk
2562 * something broke :-( */
2563 if (io_dir
& DMACMD_DIR
)
2564 data
= DC395x_read8(acb
, TRM_S1040_SCSI_FIFO
);
2566 DC395x_write8(acb
, TRM_S1040_SCSI_FIFO
, 'K');
2568 srb
->state
|= SRB_XFERPAD
;
2569 DC395x_write16(acb
, TRM_S1040_SCSI_CONTROL
, DO_DATALATCH
); /* it's important for atn stop */
2571 bval
= (io_dir
& DMACMD_DIR
) ? SCMD_FIFO_IN
: SCMD_FIFO_OUT
;
2572 DC395x_write8(acb
, TRM_S1040_SCSI_COMMAND
, bval
);
2577 static void status_phase0(struct AdapterCtlBlk
*acb
, struct ScsiReqBlk
*srb
,
2580 dprintkdbg(DBG_0
, "status_phase0: (pid#%li) <%02i-%i>\n",
2581 srb
->cmd
->pid
, srb
->cmd
->device
->id
, srb
->cmd
->device
->lun
);
2582 srb
->target_status
= DC395x_read8(acb
, TRM_S1040_SCSI_FIFO
);
2583 srb
->end_message
= DC395x_read8(acb
, TRM_S1040_SCSI_FIFO
); /* get message */
2584 srb
->state
= SRB_COMPLETED
;
2585 *pscsi_status
= PH_BUS_FREE
; /*.. initial phase */
2586 DC395x_write16(acb
, TRM_S1040_SCSI_CONTROL
, DO_DATALATCH
); /* it's important for atn stop */
2587 DC395x_write8(acb
, TRM_S1040_SCSI_COMMAND
, SCMD_MSGACCEPT
);
2591 static void status_phase1(struct AdapterCtlBlk
*acb
, struct ScsiReqBlk
*srb
,
2594 dprintkdbg(DBG_0
, "status_phase1: (pid#%li) <%02i-%i>\n",
2595 srb
->cmd
->pid
, srb
->cmd
->device
->id
, srb
->cmd
->device
->lun
);
2596 srb
->state
= SRB_STATUS
;
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_COMP
);
2602 /* Check if the message is complete */
2603 static inline u8
msgin_completed(u8
* msgbuf
, u32 len
)
2605 if (*msgbuf
== EXTENDED_MESSAGE
) {
2608 if (len
< msgbuf
[1] + 2)
2610 } else if (*msgbuf
>= 0x20 && *msgbuf
<= 0x2f) /* two byte messages */
2617 static inline void msgin_reject(struct AdapterCtlBlk
*acb
,
2618 struct ScsiReqBlk
*srb
)
2620 srb
->msgout_buf
[0] = MESSAGE_REJECT
;
2622 DC395x_ENABLE_MSGOUT
;
2623 srb
->state
&= ~SRB_MSGIN
;
2624 srb
->state
|= SRB_MSGOUT
;
2625 dprintkl(KERN_INFO
, "msgin_reject: 0x%02x <%02i-%i>\n",
2627 srb
->dcb
->target_id
, srb
->dcb
->target_lun
);
2631 static struct ScsiReqBlk
*msgin_qtag(struct AdapterCtlBlk
*acb
,
2632 struct DeviceCtlBlk
*dcb
, u8 tag
)
2634 struct ScsiReqBlk
*srb
= NULL
;
2635 struct ScsiReqBlk
*i
;
2636 dprintkdbg(DBG_0
, "msgin_qtag: (pid#%li) tag=%i srb=%p\n",
2637 srb
->cmd
->pid
, tag
, srb
);
2639 if (!(dcb
->tag_mask
& (1 << tag
)))
2640 dprintkl(KERN_DEBUG
,
2641 "msgin_qtag: tag_mask=0x%08x does not reserve tag %i!\n",
2642 dcb
->tag_mask
, tag
);
2644 if (list_empty(&dcb
->srb_going_list
))
2646 list_for_each_entry(i
, &dcb
->srb_going_list
, list
) {
2647 if (i
->tag_number
== tag
) {
2655 dprintkdbg(DBG_0
, "msgin_qtag: (pid#%li) <%02i-%i>\n",
2656 srb
->cmd
->pid
, srb
->dcb
->target_id
, srb
->dcb
->target_lun
);
2657 if (dcb
->flag
& ABORT_DEV_
) {
2658 /*srb->state = SRB_ABORT_SENT; */
2659 enable_msgout_abort(acb
, srb
);
2662 if (!(srb
->state
& SRB_DISCONNECT
))
2665 memcpy(srb
->msgin_buf
, dcb
->active_srb
->msgin_buf
, acb
->msg_len
);
2666 srb
->state
|= dcb
->active_srb
->state
;
2667 srb
->state
|= SRB_DATA_XFER
;
2668 dcb
->active_srb
= srb
;
2669 /* How can we make the DORS happy? */
2674 srb
->state
= SRB_UNEXPECT_RESEL
;
2675 dcb
->active_srb
= srb
;
2676 srb
->msgout_buf
[0] = MSG_ABORT_TAG
;
2678 DC395x_ENABLE_MSGOUT
;
2679 dprintkl(KERN_DEBUG
, "msgin_qtag: Unknown tag %i - abort\n", tag
);
2684 static inline void reprogram_regs(struct AdapterCtlBlk
*acb
,
2685 struct DeviceCtlBlk
*dcb
)
2687 DC395x_write8(acb
, TRM_S1040_SCSI_TARGETID
, dcb
->target_id
);
2688 DC395x_write8(acb
, TRM_S1040_SCSI_SYNC
, dcb
->sync_period
);
2689 DC395x_write8(acb
, TRM_S1040_SCSI_OFFSET
, dcb
->sync_offset
);
2690 set_xfer_rate(acb
, dcb
);
2694 /* set async transfer mode */
2695 static void msgin_set_async(struct AdapterCtlBlk
*acb
, struct ScsiReqBlk
*srb
)
2697 struct DeviceCtlBlk
*dcb
= srb
->dcb
;
2698 dprintkl(KERN_DEBUG
, "msgin_set_async: No sync transfers <%02i-%i>\n",
2699 dcb
->target_id
, dcb
->target_lun
);
2701 dcb
->sync_mode
&= ~(SYNC_NEGO_ENABLE
);
2702 dcb
->sync_mode
|= SYNC_NEGO_DONE
;
2703 /*dcb->sync_period &= 0; */
2704 dcb
->sync_offset
= 0;
2705 dcb
->min_nego_period
= 200 >> 2; /* 200ns <=> 5 MHz */
2706 srb
->state
&= ~SRB_DO_SYNC_NEGO
;
2707 reprogram_regs(acb
, dcb
);
2708 if ((dcb
->sync_mode
& WIDE_NEGO_ENABLE
)
2709 && !(dcb
->sync_mode
& WIDE_NEGO_DONE
)) {
2710 build_wdtr(acb
, dcb
, srb
);
2711 DC395x_ENABLE_MSGOUT
;
2712 dprintkdbg(DBG_0
, "msgin_set_async(rej): Try WDTR anyway\n");
2717 /* set sync transfer mode */
2718 static void msgin_set_sync(struct AdapterCtlBlk
*acb
, struct ScsiReqBlk
*srb
)
2720 struct DeviceCtlBlk
*dcb
= srb
->dcb
;
2723 dprintkdbg(DBG_1
, "msgin_set_sync: <%02i> Sync: %ins "
2724 "(%02i.%01i MHz) Offset %i\n",
2725 dcb
->target_id
, srb
->msgin_buf
[3] << 2,
2726 (250 / srb
->msgin_buf
[3]),
2727 ((250 % srb
->msgin_buf
[3]) * 10) / srb
->msgin_buf
[3],
2730 if (srb
->msgin_buf
[4] > 15)
2731 srb
->msgin_buf
[4] = 15;
2732 if (!(dcb
->dev_mode
& NTC_DO_SYNC_NEGO
))
2733 dcb
->sync_offset
= 0;
2734 else if (dcb
->sync_offset
== 0)
2735 dcb
->sync_offset
= srb
->msgin_buf
[4];
2736 if (srb
->msgin_buf
[4] > dcb
->sync_offset
)
2737 srb
->msgin_buf
[4] = dcb
->sync_offset
;
2739 dcb
->sync_offset
= srb
->msgin_buf
[4];
2741 while (bval
< 7 && (srb
->msgin_buf
[3] > clock_period
[bval
]
2742 || dcb
->min_nego_period
>
2743 clock_period
[bval
]))
2745 if (srb
->msgin_buf
[3] < clock_period
[bval
])
2747 "msgin_set_sync: Increase sync nego period to %ins\n",
2748 clock_period
[bval
] << 2);
2749 srb
->msgin_buf
[3] = clock_period
[bval
];
2750 dcb
->sync_period
&= 0xf0;
2751 dcb
->sync_period
|= ALT_SYNC
| bval
;
2752 dcb
->min_nego_period
= srb
->msgin_buf
[3];
2754 if (dcb
->sync_period
& WIDE_SYNC
)
2760 "Target %02i: %s Sync: %ins Offset %i (%02i.%01i MB/s)\n",
2761 dcb
->target_id
, (fact
== 500) ? "Wide16" : "",
2762 dcb
->min_nego_period
<< 2, dcb
->sync_offset
,
2763 (fact
/ dcb
->min_nego_period
),
2764 ((fact
% dcb
->min_nego_period
) * 10 +
2765 dcb
->min_nego_period
/ 2) / dcb
->min_nego_period
);
2767 if (!(srb
->state
& SRB_DO_SYNC_NEGO
)) {
2768 /* Reply with corrected SDTR Message */
2769 dprintkl(KERN_DEBUG
, "msgin_set_sync: answer w/%ins %i\n",
2770 srb
->msgin_buf
[3] << 2, srb
->msgin_buf
[4]);
2772 memcpy(srb
->msgout_buf
, srb
->msgin_buf
, 5);
2774 DC395x_ENABLE_MSGOUT
;
2775 dcb
->sync_mode
|= SYNC_NEGO_DONE
;
2777 if ((dcb
->sync_mode
& WIDE_NEGO_ENABLE
)
2778 && !(dcb
->sync_mode
& WIDE_NEGO_DONE
)) {
2779 build_wdtr(acb
, dcb
, srb
);
2780 DC395x_ENABLE_MSGOUT
;
2781 dprintkdbg(DBG_0
, "msgin_set_sync: Also try WDTR\n");
2784 srb
->state
&= ~SRB_DO_SYNC_NEGO
;
2785 dcb
->sync_mode
|= SYNC_NEGO_DONE
| SYNC_NEGO_ENABLE
;
2787 reprogram_regs(acb
, dcb
);
2791 static inline void msgin_set_nowide(struct AdapterCtlBlk
*acb
,
2792 struct ScsiReqBlk
*srb
)
2794 struct DeviceCtlBlk
*dcb
= srb
->dcb
;
2795 dprintkdbg(DBG_1
, "msgin_set_nowide: <%02i>\n", dcb
->target_id
);
2797 dcb
->sync_period
&= ~WIDE_SYNC
;
2798 dcb
->sync_mode
&= ~(WIDE_NEGO_ENABLE
);
2799 dcb
->sync_mode
|= WIDE_NEGO_DONE
;
2800 srb
->state
&= ~SRB_DO_WIDE_NEGO
;
2801 reprogram_regs(acb
, dcb
);
2802 if ((dcb
->sync_mode
& SYNC_NEGO_ENABLE
)
2803 && !(dcb
->sync_mode
& SYNC_NEGO_DONE
)) {
2804 build_sdtr(acb
, dcb
, srb
);
2805 DC395x_ENABLE_MSGOUT
;
2806 dprintkdbg(DBG_0
, "msgin_set_nowide: Rejected. Try SDTR anyway\n");
2810 static void msgin_set_wide(struct AdapterCtlBlk
*acb
, struct ScsiReqBlk
*srb
)
2812 struct DeviceCtlBlk
*dcb
= srb
->dcb
;
2813 u8 wide
= (dcb
->dev_mode
& NTC_DO_WIDE_NEGO
2814 && acb
->config
& HCC_WIDE_CARD
) ? 1 : 0;
2815 dprintkdbg(DBG_1
, "msgin_set_wide: <%02i>\n", dcb
->target_id
);
2817 if (srb
->msgin_buf
[3] > wide
)
2818 srb
->msgin_buf
[3] = wide
;
2820 if (!(srb
->state
& SRB_DO_WIDE_NEGO
)) {
2821 dprintkl(KERN_DEBUG
,
2822 "msgin_set_wide: Wide nego initiated <%02i>\n",
2824 memcpy(srb
->msgout_buf
, srb
->msgin_buf
, 4);
2826 srb
->state
|= SRB_DO_WIDE_NEGO
;
2827 DC395x_ENABLE_MSGOUT
;
2830 dcb
->sync_mode
|= (WIDE_NEGO_ENABLE
| WIDE_NEGO_DONE
);
2831 if (srb
->msgin_buf
[3] > 0)
2832 dcb
->sync_period
|= WIDE_SYNC
;
2834 dcb
->sync_period
&= ~WIDE_SYNC
;
2835 srb
->state
&= ~SRB_DO_WIDE_NEGO
;
2836 /*dcb->sync_mode &= ~(WIDE_NEGO_ENABLE+WIDE_NEGO_DONE); */
2838 "msgin_set_wide: Wide (%i bit) negotiated <%02i>\n",
2839 (8 << srb
->msgin_buf
[3]), dcb
->target_id
);
2840 reprogram_regs(acb
, dcb
);
2841 if ((dcb
->sync_mode
& SYNC_NEGO_ENABLE
)
2842 && !(dcb
->sync_mode
& SYNC_NEGO_DONE
)) {
2843 build_sdtr(acb
, dcb
, srb
);
2844 DC395x_ENABLE_MSGOUT
;
2845 dprintkdbg(DBG_0
, "msgin_set_wide: Also try SDTR.\n");
2851 * extended message codes:
2856 * 00h MODIFY DATA POINTER
2857 * 01h SYNCHRONOUS DATA TRANSFER REQUEST
2858 * 03h WIDE DATA TRANSFER REQUEST
2859 * 04h - 7Fh Reserved
2860 * 80h - FFh Vendor specific
2862 static void msgin_phase0(struct AdapterCtlBlk
*acb
, struct ScsiReqBlk
*srb
,
2865 struct DeviceCtlBlk
*dcb
= acb
->active_dcb
;
2866 dprintkdbg(DBG_0
, "msgin_phase0: (pid#%li)\n", srb
->cmd
->pid
);
2868 srb
->msgin_buf
[acb
->msg_len
++] = DC395x_read8(acb
, TRM_S1040_SCSI_FIFO
);
2869 if (msgin_completed(srb
->msgin_buf
, acb
->msg_len
)) {
2870 /* Now eval the msg */
2871 switch (srb
->msgin_buf
[0]) {
2873 srb
->state
= SRB_DISCONNECT
;
2876 case SIMPLE_QUEUE_TAG
:
2877 case HEAD_OF_QUEUE_TAG
:
2878 case ORDERED_QUEUE_TAG
:
2880 msgin_qtag(acb
, dcb
,
2884 case MESSAGE_REJECT
:
2885 DC395x_write16(acb
, TRM_S1040_SCSI_CONTROL
,
2886 DO_CLRATN
| DO_DATALATCH
);
2887 /* A sync nego message was rejected ! */
2888 if (srb
->state
& SRB_DO_SYNC_NEGO
) {
2889 msgin_set_async(acb
, srb
);
2892 /* A wide nego message was rejected ! */
2893 if (srb
->state
& SRB_DO_WIDE_NEGO
) {
2894 msgin_set_nowide(acb
, srb
);
2897 enable_msgout_abort(acb
, srb
);
2898 /*srb->state |= SRB_ABORT_SENT */
2901 case EXTENDED_MESSAGE
:
2903 if (srb
->msgin_buf
[1] == 3
2904 && srb
->msgin_buf
[2] == EXTENDED_SDTR
) {
2905 msgin_set_sync(acb
, srb
);
2909 if (srb
->msgin_buf
[1] == 2
2910 && srb
->msgin_buf
[2] == EXTENDED_WDTR
2911 && srb
->msgin_buf
[3] <= 2) { /* sanity check ... */
2912 msgin_set_wide(acb
, srb
);
2915 msgin_reject(acb
, srb
);
2918 case MSG_IGNOREWIDE
:
2919 /* Discard wide residual */
2920 dprintkdbg(DBG_0
, "msgin_phase0: Ignore Wide Residual!\n");
2923 case COMMAND_COMPLETE
:
2924 /* nothing has to be done */
2929 * SAVE POINTER may be ignored as we have the struct
2930 * ScsiReqBlk* associated with the scsi command.
2932 dprintkdbg(DBG_0
, "msgin_phase0: (pid#%li) "
2933 "SAVE POINTER rem=%i Ignore\n",
2934 srb
->cmd
->pid
, srb
->total_xfer_length
);
2937 case RESTORE_POINTERS
:
2938 dprintkdbg(DBG_0
, "msgin_phase0: RESTORE POINTER. Ignore\n");
2942 dprintkdbg(DBG_0
, "msgin_phase0: (pid#%li) "
2943 "<%02i-%i> ABORT msg\n",
2944 srb
->cmd
->pid
, dcb
->target_id
,
2946 dcb
->flag
|= ABORT_DEV_
;
2947 enable_msgout_abort(acb
, srb
);
2951 /* reject unknown messages */
2952 if (srb
->msgin_buf
[0] & IDENTIFY_BASE
) {
2953 dprintkdbg(DBG_0
, "msgin_phase0: Identify msg\n");
2955 srb
->msgout_buf
[0] = dcb
->identify_msg
;
2956 DC395x_ENABLE_MSGOUT
;
2957 srb
->state
|= SRB_MSGOUT
;
2960 msgin_reject(acb
, srb
);
2963 /* Clear counter and MsgIn state */
2964 srb
->state
&= ~SRB_MSGIN
;
2967 *pscsi_status
= PH_BUS_FREE
;
2968 DC395x_write16(acb
, TRM_S1040_SCSI_CONTROL
, DO_DATALATCH
); /* it's important ... you know! */
2969 DC395x_write8(acb
, TRM_S1040_SCSI_COMMAND
, SCMD_MSGACCEPT
);
2973 static void msgin_phase1(struct AdapterCtlBlk
*acb
, struct ScsiReqBlk
*srb
,
2976 dprintkdbg(DBG_0
, "msgin_phase1: (pid#%li)\n", srb
->cmd
->pid
);
2977 clear_fifo(acb
, "msgin_phase1");
2978 DC395x_write32(acb
, TRM_S1040_SCSI_COUNTER
, 1);
2979 if (!(srb
->state
& SRB_MSGIN
)) {
2980 srb
->state
&= ~SRB_DISCONNECT
;
2981 srb
->state
|= SRB_MSGIN
;
2983 DC395x_write16(acb
, TRM_S1040_SCSI_CONTROL
, DO_DATALATCH
); /* it's important for atn stop */
2985 DC395x_write8(acb
, TRM_S1040_SCSI_COMMAND
, SCMD_FIFO_IN
);
2989 static void nop0(struct AdapterCtlBlk
*acb
, struct ScsiReqBlk
*srb
,
2995 static void nop1(struct AdapterCtlBlk
*acb
, struct ScsiReqBlk
*srb
,
3001 static void set_xfer_rate(struct AdapterCtlBlk
*acb
, struct DeviceCtlBlk
*dcb
)
3003 struct DeviceCtlBlk
*i
;
3005 /* set all lun device's period, offset */
3006 if (dcb
->identify_msg
& 0x07)
3009 if (acb
->scan_devices
) {
3010 current_sync_offset
= dcb
->sync_offset
;
3014 list_for_each_entry(i
, &acb
->dcb_list
, list
)
3015 if (i
->target_id
== dcb
->target_id
) {
3016 i
->sync_period
= dcb
->sync_period
;
3017 i
->sync_offset
= dcb
->sync_offset
;
3018 i
->sync_mode
= dcb
->sync_mode
;
3019 i
->min_nego_period
= dcb
->min_nego_period
;
3024 static void disconnect(struct AdapterCtlBlk
*acb
)
3026 struct DeviceCtlBlk
*dcb
= acb
->active_dcb
;
3027 struct ScsiReqBlk
*srb
;
3030 dprintkl(KERN_ERR
, "disconnect: No such device\n");
3032 /* Suspend queue for a while */
3033 acb
->scsi_host
->last_reset
=
3035 HZ
* acb
->eeprom
.delay_time
;
3036 clear_fifo(acb
, "disconnectEx");
3037 DC395x_write16(acb
, TRM_S1040_SCSI_CONTROL
, DO_HWRESELECT
);
3040 srb
= dcb
->active_srb
;
3041 acb
->active_dcb
= NULL
;
3042 dprintkdbg(DBG_0
, "disconnect: (pid#%li)\n", srb
->cmd
->pid
);
3044 srb
->scsi_phase
= PH_BUS_FREE
; /* initial phase */
3045 clear_fifo(acb
, "disconnect");
3046 DC395x_write16(acb
, TRM_S1040_SCSI_CONTROL
, DO_HWRESELECT
);
3047 if (srb
->state
& SRB_UNEXPECT_RESEL
) {
3049 "disconnect: Unexpected reselection <%02i-%i>\n",
3050 dcb
->target_id
, dcb
->target_lun
);
3052 waiting_process_next(acb
);
3053 } else if (srb
->state
& SRB_ABORT_SENT
) {
3054 dcb
->flag
&= ~ABORT_DEV_
;
3055 acb
->scsi_host
->last_reset
= jiffies
+ HZ
/ 2 + 1;
3056 dprintkl(KERN_ERR
, "disconnect: SRB_ABORT_SENT\n");
3057 doing_srb_done(acb
, DID_ABORT
, srb
->cmd
, 1);
3058 waiting_process_next(acb
);
3060 if ((srb
->state
& (SRB_START_
+ SRB_MSGOUT
))
3062 state
& (SRB_DISCONNECT
+ SRB_COMPLETED
))) {
3064 * Selection time out
3065 * SRB_START_ || SRB_MSGOUT || (!SRB_DISCONNECT && !SRB_COMPLETED)
3067 /* Unexp. Disc / Sel Timeout */
3068 if (srb
->state
!= SRB_START_
3069 && srb
->state
!= SRB_MSGOUT
) {
3070 srb
->state
= SRB_READY
;
3071 dprintkl(KERN_DEBUG
,
3072 "disconnect: (pid#%li) Unexpected\n",
3074 srb
->target_status
= SCSI_STAT_SEL_TIMEOUT
;
3077 /* Normal selection timeout */
3078 dprintkdbg(DBG_KG
, "disconnect: (pid#%li) "
3079 "<%02i-%i> SelTO\n", srb
->cmd
->pid
,
3080 dcb
->target_id
, dcb
->target_lun
);
3081 if (srb
->retry_count
++ > DC395x_MAX_RETRIES
3082 || acb
->scan_devices
) {
3083 srb
->target_status
=
3084 SCSI_STAT_SEL_TIMEOUT
;
3088 srb_going_to_waiting_move(dcb
, srb
);
3090 "disconnect: (pid#%li) Retry\n",
3092 waiting_set_timer(acb
, HZ
/ 20);
3094 } else if (srb
->state
& SRB_DISCONNECT
) {
3095 u8 bval
= DC395x_read8(acb
, TRM_S1040_SCSI_SIGNAL
);
3097 * SRB_DISCONNECT (This is what we expect!)
3100 dprintkdbg(DBG_0
, "disconnect: SCSI bus stat "
3101 " 0x%02x: ACK set! Other controllers?\n",
3103 /* It could come from another initiator, therefore don't do much ! */
3105 waiting_process_next(acb
);
3106 } else if (srb
->state
& SRB_COMPLETED
) {
3112 dcb
->active_srb
= NULL
;
3113 srb
->state
= SRB_FREE
;
3114 srb_done(acb
, dcb
, srb
);
3120 static void reselect(struct AdapterCtlBlk
*acb
)
3122 struct DeviceCtlBlk
*dcb
= acb
->active_dcb
;
3123 struct ScsiReqBlk
*srb
= NULL
;
3124 u16 rsel_tar_lun_id
;
3127 dprintkdbg(DBG_0
, "reselect: acb=%p\n", acb
);
3129 clear_fifo(acb
, "reselect");
3130 /*DC395x_write16(acb, TRM_S1040_SCSI_CONTROL, DO_HWRESELECT | DO_DATALATCH); */
3131 /* Read Reselected Target ID and LUN */
3132 rsel_tar_lun_id
= DC395x_read16(acb
, TRM_S1040_SCSI_TARGETID
);
3133 if (dcb
) { /* Arbitration lost but Reselection win */
3134 srb
= dcb
->active_srb
;
3136 dprintkl(KERN_DEBUG
, "reselect: Arb lost Resel won, "
3137 "but active_srb == NULL\n");
3138 DC395x_write16(acb
, TRM_S1040_SCSI_CONTROL
, DO_DATALATCH
); /* it's important for atn stop */
3142 if (!acb
->scan_devices
) {
3143 dprintkdbg(DBG_KG
, "reselect: (pid#%li) <%02i-%i> "
3144 "Arb lost but Resel win rsel=%i stat=0x%04x\n",
3145 srb
->cmd
->pid
, dcb
->target_id
,
3146 dcb
->target_lun
, rsel_tar_lun_id
,
3147 DC395x_read16(acb
, TRM_S1040_SCSI_STATUS
));
3149 /*srb->state |= SRB_DISCONNECT; */
3151 srb
->state
= SRB_READY
;
3153 srb_going_to_waiting_move(dcb
, srb
);
3154 waiting_set_timer(acb
, HZ
/ 20);
3159 /* Read Reselected Target Id and LUN */
3160 if (!(rsel_tar_lun_id
& (IDENTIFY_BASE
<< 8)))
3161 dprintkl(KERN_DEBUG
, "reselect: Expects identify msg. "
3162 "Got %i!\n", rsel_tar_lun_id
);
3163 id
= rsel_tar_lun_id
& 0xff;
3164 lun
= (rsel_tar_lun_id
>> 8) & 7;
3165 dcb
= find_dcb(acb
, id
, lun
);
3167 dprintkl(KERN_ERR
, "reselect: From non existent device "
3168 "<%02i-%i>\n", id
, lun
);
3169 DC395x_write16(acb
, TRM_S1040_SCSI_CONTROL
, DO_DATALATCH
); /* it's important for atn stop */
3172 acb
->active_dcb
= dcb
;
3174 if (!(dcb
->dev_mode
& NTC_DO_DISCONNECT
))
3175 dprintkl(KERN_DEBUG
, "reselect: in spite of forbidden "
3176 "disconnection? <%02i-%i>\n",
3177 dcb
->target_id
, dcb
->target_lun
);
3179 if (dcb
->sync_mode
& EN_TAG_QUEUEING
/*&& !arblostflag */) {
3181 dcb
->active_srb
= srb
;
3183 /* There can be only one! */
3184 srb
= dcb
->active_srb
;
3185 if (!srb
|| !(srb
->state
& SRB_DISCONNECT
)) {
3189 dprintkl(KERN_DEBUG
,
3190 "reselect: w/o disconnected cmds <%02i-%i>\n",
3191 dcb
->target_id
, dcb
->target_lun
);
3193 srb
->state
= SRB_UNEXPECT_RESEL
;
3194 dcb
->active_srb
= srb
;
3195 enable_msgout_abort(acb
, srb
);
3197 if (dcb
->flag
& ABORT_DEV_
) {
3198 /*srb->state = SRB_ABORT_SENT; */
3199 enable_msgout_abort(acb
, srb
);
3201 srb
->state
= SRB_DATA_XFER
;
3205 srb
->scsi_phase
= PH_BUS_FREE
; /* initial phase */
3207 /* Program HA ID, target ID, period and offset */
3208 dprintkdbg(DBG_0
, "reselect: select <%i>\n", dcb
->target_id
);
3209 DC395x_write8(acb
, TRM_S1040_SCSI_HOSTID
, acb
->scsi_host
->this_id
); /* host ID */
3210 DC395x_write8(acb
, TRM_S1040_SCSI_TARGETID
, dcb
->target_id
); /* target ID */
3211 DC395x_write8(acb
, TRM_S1040_SCSI_OFFSET
, dcb
->sync_offset
); /* offset */
3212 DC395x_write8(acb
, TRM_S1040_SCSI_SYNC
, dcb
->sync_period
); /* sync period, wide */
3213 DC395x_write16(acb
, TRM_S1040_SCSI_CONTROL
, DO_DATALATCH
); /* it's important for atn stop */
3215 DC395x_write8(acb
, TRM_S1040_SCSI_COMMAND
, SCMD_MSGACCEPT
);
3219 static inline u8
tagq_blacklist(char *name
)
3221 #ifndef DC395x_NO_TAGQ
3224 for (i
= 0; i
< BADDEVCNT
; i
++)
3225 if (memcmp(name
, DC395x_baddevname1
[i
], 28) == 0)
3235 static void disc_tagq_set(struct DeviceCtlBlk
*dcb
, struct ScsiInqData
*ptr
)
3237 /* Check for SCSI format (ANSI and Response data format) */
3238 if ((ptr
->Vers
& 0x07) >= 2 || (ptr
->RDF
& 0x0F) == 2) {
3239 if ((ptr
->Flags
& SCSI_INQ_CMDQUEUE
)
3240 && (dcb
->dev_mode
& NTC_DO_TAG_QUEUEING
) &&
3241 /*(dcb->dev_mode & NTC_DO_DISCONNECT) */
3242 /* ((dcb->dev_type == TYPE_DISK)
3243 || (dcb->dev_type == TYPE_MOD)) && */
3244 !tagq_blacklist(((char *)ptr
) + 8)) {
3245 if (dcb
->max_command
== 1)
3247 dcb
->acb
->tag_max_num
;
3248 dcb
->sync_mode
|= EN_TAG_QUEUEING
;
3249 /*dcb->tag_mask = 0; */
3251 dcb
->max_command
= 1;
3256 static void add_dev(struct AdapterCtlBlk
*acb
, struct DeviceCtlBlk
*dcb
,
3257 struct ScsiInqData
*ptr
)
3259 u8 bval1
= ptr
->DevType
& SCSI_DEVTYPE
;
3260 dcb
->dev_type
= bval1
;
3261 /* if (bval1 == TYPE_DISK || bval1 == TYPE_MOD) */
3262 disc_tagq_set(dcb
, ptr
);
3266 /* unmap mapped pci regions from SRB */
3267 static void pci_unmap_srb(struct AdapterCtlBlk
*acb
, struct ScsiReqBlk
*srb
)
3269 struct scsi_cmnd
*cmd
= srb
->cmd
;
3270 enum dma_data_direction dir
= cmd
->sc_data_direction
;
3271 if (cmd
->use_sg
&& dir
!= PCI_DMA_NONE
) {
3273 /* unmap DC395x SG list */
3274 dprintkdbg(DBG_SG
, "pci_unmap_srb: list=%08x(%05x)\n",
3275 srb
->sg_bus_addr
, SEGMENTX_LEN
);
3276 pci_unmap_single(acb
->dev
, srb
->sg_bus_addr
,
3279 dprintkdbg(DBG_SG
, "pci_unmap_srb: segs=%i buffer=%p\n",
3280 cmd
->use_sg
, cmd
->request_buffer
);
3281 /* unmap the sg segments */
3282 for (i
= 0; i
< srb
->sg_count
; i
++)
3283 kunmap(virt_to_page(srb
->virt_map
[i
]));
3284 pci_unmap_sg(acb
->dev
,
3285 (struct scatterlist
*)cmd
->request_buffer
,
3287 } else if (cmd
->request_buffer
&& dir
!= PCI_DMA_NONE
) {
3288 dprintkdbg(DBG_SG
, "pci_unmap_srb: buffer=%08x(%05x)\n",
3289 srb
->segment_x
[0].address
, cmd
->request_bufflen
);
3290 pci_unmap_single(acb
->dev
, srb
->segment_x
[0].address
,
3291 cmd
->request_bufflen
, dir
);
3296 /* unmap mapped pci sense buffer from SRB */
3297 static void pci_unmap_srb_sense(struct AdapterCtlBlk
*acb
,
3298 struct ScsiReqBlk
*srb
)
3300 if (!(srb
->flag
& AUTO_REQSENSE
))
3302 /* Unmap sense buffer */
3303 dprintkdbg(DBG_SG
, "pci_unmap_srb_sense: buffer=%08x\n",
3304 srb
->segment_x
[0].address
);
3305 pci_unmap_single(acb
->dev
, srb
->segment_x
[0].address
,
3306 srb
->segment_x
[0].length
, PCI_DMA_FROMDEVICE
);
3307 /* Restore SG stuff */
3308 srb
->total_xfer_length
= srb
->xferred
;
3309 srb
->segment_x
[0].address
=
3310 srb
->segment_x
[DC395x_MAX_SG_LISTENTRY
- 1].address
;
3311 srb
->segment_x
[0].length
=
3312 srb
->segment_x
[DC395x_MAX_SG_LISTENTRY
- 1].length
;
3317 * Complete execution of a SCSI command
3318 * Signal completion to the generic SCSI driver
3320 static void srb_done(struct AdapterCtlBlk
*acb
, struct DeviceCtlBlk
*dcb
,
3321 struct ScsiReqBlk
*srb
)
3324 struct scsi_cmnd
*cmd
= srb
->cmd
;
3325 struct ScsiInqData
*ptr
;
3326 enum dma_data_direction dir
= cmd
->sc_data_direction
;
3329 struct scatterlist
* sg
= (struct scatterlist
*)cmd
->request_buffer
;
3330 ptr
= (struct ScsiInqData
*)(srb
->virt_map
[0] + sg
->offset
);
3332 ptr
= (struct ScsiInqData
*)(cmd
->request_buffer
);
3335 dprintkdbg(DBG_1
, "srb_done: (pid#%li) <%02i-%i>\n", srb
->cmd
->pid
,
3336 srb
->cmd
->device
->id
, srb
->cmd
->device
->lun
);
3337 dprintkdbg(DBG_SG
, "srb_done: srb=%p sg=%i(%i/%i) buf=%p addr=%p\n",
3338 srb
, cmd
->use_sg
, srb
->sg_index
, srb
->sg_count
,
3339 cmd
->request_buffer
, ptr
);
3340 status
= srb
->target_status
;
3341 if (srb
->flag
& AUTO_REQSENSE
) {
3342 dprintkdbg(DBG_0
, "srb_done: AUTO_REQSENSE1\n");
3343 pci_unmap_srb_sense(acb
, srb
);
3345 ** target status..........................
3347 srb
->flag
&= ~AUTO_REQSENSE
;
3348 srb
->adapter_status
= 0;
3349 srb
->target_status
= CHECK_CONDITION
<< 1;
3350 if (debug_enabled(DBG_1
)) {
3351 switch (cmd
->sense_buffer
[2] & 0x0f) {
3353 dprintkl(KERN_DEBUG
,
3354 "ReqSense: NOT_READY cmnd=0x%02x <%02i-%i> stat=%i scan=%i ",
3355 cmd
->cmnd
[0], dcb
->target_id
,
3356 dcb
->target_lun
, status
, acb
->scan_devices
);
3358 case UNIT_ATTENTION
:
3359 dprintkl(KERN_DEBUG
,
3360 "ReqSense: UNIT_ATTENTION cmnd=0x%02x <%02i-%i> stat=%i scan=%i ",
3361 cmd
->cmnd
[0], dcb
->target_id
,
3362 dcb
->target_lun
, status
, acb
->scan_devices
);
3364 case ILLEGAL_REQUEST
:
3365 dprintkl(KERN_DEBUG
,
3366 "ReqSense: ILLEGAL_REQUEST cmnd=0x%02x <%02i-%i> stat=%i scan=%i ",
3367 cmd
->cmnd
[0], dcb
->target_id
,
3368 dcb
->target_lun
, status
, acb
->scan_devices
);
3371 dprintkl(KERN_DEBUG
,
3372 "ReqSense: MEDIUM_ERROR cmnd=0x%02x <%02i-%i> stat=%i scan=%i ",
3373 cmd
->cmnd
[0], dcb
->target_id
,
3374 dcb
->target_lun
, status
, acb
->scan_devices
);
3376 case HARDWARE_ERROR
:
3377 dprintkl(KERN_DEBUG
,
3378 "ReqSense: HARDWARE_ERROR cmnd=0x%02x <%02i-%i> stat=%i scan=%i ",
3379 cmd
->cmnd
[0], dcb
->target_id
,
3380 dcb
->target_lun
, status
, acb
->scan_devices
);
3383 if (cmd
->sense_buffer
[7] >= 6)
3384 printk("sense=0x%02x ASC=0x%02x ASCQ=0x%02x "
3385 "(0x%08x 0x%08x)\n",
3386 cmd
->sense_buffer
[2], cmd
->sense_buffer
[12],
3387 cmd
->sense_buffer
[13],
3388 *((unsigned int *)(cmd
->sense_buffer
+ 3)),
3389 *((unsigned int *)(cmd
->sense_buffer
+ 8)));
3391 printk("sense=0x%02x No ASC/ASCQ (0x%08x)\n",
3392 cmd
->sense_buffer
[2],
3393 *((unsigned int *)(cmd
->sense_buffer
+ 3)));
3396 if (status
== (CHECK_CONDITION
<< 1)) {
3397 cmd
->result
= DID_BAD_TARGET
<< 16;
3400 dprintkdbg(DBG_0
, "srb_done: AUTO_REQSENSE2\n");
3402 if (srb
->total_xfer_length
3403 && srb
->total_xfer_length
>= cmd
->underflow
)
3405 MK_RES_LNX(DRIVER_SENSE
, DID_OK
,
3406 srb
->end_message
, CHECK_CONDITION
);
3407 /*SET_RES_DID(cmd->result,DID_OK) */
3410 MK_RES_LNX(DRIVER_SENSE
, DID_OK
,
3411 srb
->end_message
, CHECK_CONDITION
);
3416 /*************************************************************/
3419 * target status..........................
3421 if (status_byte(status
) == CHECK_CONDITION
) {
3422 request_sense(acb
, dcb
, srb
);
3424 } else if (status_byte(status
) == QUEUE_FULL
) {
3425 tempcnt
= (u8
)list_size(&dcb
->srb_going_list
);
3426 dprintkl(KERN_INFO
, "QUEUE_FULL for dev <%02i-%i> with %i cmnds\n",
3427 dcb
->target_id
, dcb
->target_lun
, tempcnt
);
3430 dcb
->max_command
= tempcnt
;
3432 srb_going_to_waiting_move(dcb
, srb
);
3433 waiting_set_timer(acb
, HZ
/ 20);
3434 srb
->adapter_status
= 0;
3435 srb
->target_status
= 0;
3437 } else if (status
== SCSI_STAT_SEL_TIMEOUT
) {
3438 srb
->adapter_status
= H_SEL_TIMEOUT
;
3439 srb
->target_status
= 0;
3440 cmd
->result
= DID_NO_CONNECT
<< 16;
3442 srb
->adapter_status
= 0;
3443 SET_RES_DID(cmd
->result
, DID_ERROR
);
3444 SET_RES_MSG(cmd
->result
, srb
->end_message
);
3445 SET_RES_TARGET(cmd
->result
, status
);
3450 ** process initiator status..........................
3452 status
= srb
->adapter_status
;
3453 if (status
& H_OVER_UNDER_RUN
) {
3454 srb
->target_status
= 0;
3455 SET_RES_DID(cmd
->result
, DID_OK
);
3456 SET_RES_MSG(cmd
->result
, srb
->end_message
);
3457 } else if (srb
->status
& PARITY_ERROR
) {
3458 SET_RES_DID(cmd
->result
, DID_PARITY
);
3459 SET_RES_MSG(cmd
->result
, srb
->end_message
);
3460 } else { /* No error */
3462 srb
->adapter_status
= 0;
3463 srb
->target_status
= 0;
3464 SET_RES_DID(cmd
->result
, DID_OK
);
3468 if (dir
!= PCI_DMA_NONE
) {
3470 pci_dma_sync_sg_for_cpu(acb
->dev
,
3471 (struct scatterlist
*)cmd
->
3472 request_buffer
, cmd
->use_sg
, dir
);
3473 else if (cmd
->request_buffer
)
3474 pci_dma_sync_single_for_cpu(acb
->dev
,
3475 srb
->segment_x
[0].address
,
3476 cmd
->request_bufflen
, dir
);
3479 if ((cmd
->result
& RES_DID
) == 0 && cmd
->cmnd
[0] == INQUIRY
3480 && cmd
->cmnd
[2] == 0 && cmd
->request_bufflen
>= 8
3481 && dir
!= PCI_DMA_NONE
&& ptr
&& (ptr
->Vers
& 0x07) >= 2)
3482 dcb
->inquiry7
= ptr
->Flags
;
3483 /* Check Error Conditions */
3486 /*if( srb->cmd->cmnd[0] == INQUIRY && */
3487 /* (host_byte(cmd->result) == DID_OK || status_byte(cmd->result) & CHECK_CONDITION) ) */
3488 if (cmd
->cmnd
[0] == INQUIRY
&& (cmd
->result
== (DID_OK
<< 16)
3489 || status_byte(cmd
->
3493 if (!dcb
->init_tcq_flag
) {
3494 add_dev(acb
, dcb
, ptr
);
3495 dcb
->init_tcq_flag
= 1;
3501 /* Here is the info for Doug Gilbert's sg3 ... */
3502 cmd
->resid
= srb
->total_xfer_length
;
3503 /* This may be interpreted by sb. or not ... */
3504 cmd
->SCp
.this_residual
= srb
->total_xfer_length
;
3505 cmd
->SCp
.buffers_residual
= 0;
3506 if (debug_enabled(DBG_KG
)) {
3507 if (srb
->total_xfer_length
)
3508 dprintkdbg(DBG_KG
, "srb_done: (pid#%li) <%02i-%i> "
3509 "cmnd=0x%02x Missed %i bytes\n",
3510 cmd
->pid
, cmd
->device
->id
, cmd
->device
->lun
,
3511 cmd
->cmnd
[0], srb
->total_xfer_length
);
3514 srb_going_remove(dcb
, srb
);
3515 /* Add to free list */
3516 if (srb
== acb
->tmp_srb
)
3517 dprintkl(KERN_ERR
, "srb_done: ERROR! Completed cmd with tmp_srb\n");
3519 dprintkdbg(DBG_0
, "srb_done: (pid#%li) done result=0x%08x\n",
3520 cmd
->pid
, cmd
->result
);
3521 srb_free_insert(acb
, srb
);
3523 pci_unmap_srb(acb
, srb
);
3525 cmd
->scsi_done(cmd
);
3526 waiting_process_next(acb
);
3530 /* abort all cmds in our queues */
3531 static void doing_srb_done(struct AdapterCtlBlk
*acb
, u8 did_flag
,
3532 struct scsi_cmnd
*cmd
, u8 force
)
3534 struct DeviceCtlBlk
*dcb
;
3535 dprintkl(KERN_INFO
, "doing_srb_done: pids ");
3537 list_for_each_entry(dcb
, &acb
->dcb_list
, list
) {
3538 struct ScsiReqBlk
*srb
;
3539 struct ScsiReqBlk
*tmp
;
3540 struct scsi_cmnd
*p
;
3542 list_for_each_entry_safe(srb
, tmp
, &dcb
->srb_going_list
, list
) {
3543 enum dma_data_direction dir
;
3547 dir
= p
->sc_data_direction
;
3548 result
= MK_RES(0, did_flag
, 0, 0);
3549 printk("G:%li(%02i-%i) ", p
->pid
,
3550 p
->device
->id
, p
->device
->lun
);
3551 srb_going_remove(dcb
, srb
);
3553 srb_free_insert(acb
, srb
);
3555 pci_unmap_srb_sense(acb
, srb
);
3556 pci_unmap_srb(acb
, srb
);
3558 /* For new EH, we normally don't need to give commands back,
3559 * as they all complete or all time out */
3563 if (!list_empty(&dcb
->srb_going_list
))
3564 dprintkl(KERN_DEBUG
,
3565 "How could the ML send cmnds to the Going queue? <%02i-%i>\n",
3566 dcb
->target_id
, dcb
->target_lun
);
3568 dprintkl(KERN_DEBUG
,
3569 "tag_mask for <%02i-%i> should be empty, is %08x!\n",
3570 dcb
->target_id
, dcb
->target_lun
,
3574 list_for_each_entry_safe(srb
, tmp
, &dcb
->srb_waiting_list
, list
) {
3578 result
= MK_RES(0, did_flag
, 0, 0);
3579 printk("W:%li<%02i-%i>", p
->pid
, p
->device
->id
,
3581 srb_waiting_remove(dcb
, srb
);
3582 srb_free_insert(acb
, srb
);
3584 pci_unmap_srb_sense(acb
, srb
);
3585 pci_unmap_srb(acb
, srb
);
3587 /* For new EH, we normally don't need to give commands back,
3588 * as they all complete or all time out */
3589 cmd
->scsi_done(cmd
);
3592 if (!list_empty(&dcb
->srb_waiting_list
))
3593 dprintkl(KERN_DEBUG
, "ML queued %i cmnds again to <%02i-%i>\n",
3594 list_size(&dcb
->srb_waiting_list
), dcb
->target_id
,
3596 dcb
->flag
&= ~ABORT_DEV_
;
3602 static void reset_scsi_bus(struct AdapterCtlBlk
*acb
)
3604 dprintkdbg(DBG_0
, "reset_scsi_bus: acb=%p\n", acb
);
3605 acb
->acb_flag
|= RESET_DEV
; /* RESET_DETECT, RESET_DONE, RESET_DEV */
3606 DC395x_write16(acb
, TRM_S1040_SCSI_CONTROL
, DO_RSTSCSI
);
3608 while (!(DC395x_read8(acb
, TRM_S1040_SCSI_INTSTATUS
) & INT_SCSIRESET
))
3613 static void set_basic_config(struct AdapterCtlBlk
*acb
)
3617 DC395x_write8(acb
, TRM_S1040_SCSI_TIMEOUT
, acb
->sel_timeout
);
3618 if (acb
->config
& HCC_PARITY
)
3619 bval
= PHASELATCH
| INITIATOR
| BLOCKRST
| PARITYCHECK
;
3621 bval
= PHASELATCH
| INITIATOR
| BLOCKRST
;
3623 DC395x_write8(acb
, TRM_S1040_SCSI_CONFIG0
, bval
);
3625 /* program configuration 1: Act_Neg (+ Act_Neg_Enh? + Fast_Filter? + DataDis?) */
3626 DC395x_write8(acb
, TRM_S1040_SCSI_CONFIG1
, 0x03); /* was 0x13: default */
3627 /* program Host ID */
3628 DC395x_write8(acb
, TRM_S1040_SCSI_HOSTID
, acb
->scsi_host
->this_id
);
3629 /* set ansynchronous transfer */
3630 DC395x_write8(acb
, TRM_S1040_SCSI_OFFSET
, 0x00);
3631 /* Turn LED control off */
3632 wval
= DC395x_read16(acb
, TRM_S1040_GEN_CONTROL
) & 0x7F;
3633 DC395x_write16(acb
, TRM_S1040_GEN_CONTROL
, wval
);
3635 wval
= DC395x_read16(acb
, TRM_S1040_DMA_CONFIG
) & ~DMA_FIFO_CTRL
;
3637 DMA_FIFO_HALF_HALF
| DMA_ENHANCE
/*| DMA_MEM_MULTI_READ */ ;
3638 DC395x_write16(acb
, TRM_S1040_DMA_CONFIG
, wval
);
3639 /* Clear pending interrupt status */
3640 DC395x_read8(acb
, TRM_S1040_SCSI_INTSTATUS
);
3641 /* Enable SCSI interrupt */
3642 DC395x_write8(acb
, TRM_S1040_SCSI_INTEN
, 0x7F);
3643 DC395x_write8(acb
, TRM_S1040_DMA_INTEN
, EN_SCSIINTR
| EN_DMAXFERERROR
3644 /*| EN_DMAXFERABORT | EN_DMAXFERCOMP | EN_FORCEDMACOMP */
3649 static void scsi_reset_detect(struct AdapterCtlBlk
*acb
)
3651 dprintkl(KERN_INFO
, "scsi_reset_detect: acb=%p\n", acb
);
3652 /* delay half a second */
3653 if (timer_pending(&acb
->waiting_timer
))
3654 del_timer(&acb
->waiting_timer
);
3656 DC395x_write8(acb
, TRM_S1040_SCSI_CONTROL
, DO_RSTMODULE
);
3657 DC395x_write8(acb
, TRM_S1040_DMA_CONTROL
, DMARESETMODULE
);
3658 /*DC395x_write8(acb, TRM_S1040_DMA_CONTROL,STOPDMAXFER); */
3660 /* Maybe we locked up the bus? Then lets wait even longer ... */
3661 acb
->scsi_host
->last_reset
=
3662 jiffies
+ 5 * HZ
/ 2 +
3663 HZ
* acb
->eeprom
.delay_time
;
3665 clear_fifo(acb
, "scsi_reset_detect");
3666 set_basic_config(acb
);
3668 /*DC395x_write16(acb, TRM_S1040_SCSI_CONTROL, DO_HWRESELECT); */
3670 if (acb
->acb_flag
& RESET_DEV
) { /* RESET_DETECT, RESET_DONE, RESET_DEV */
3671 acb
->acb_flag
|= RESET_DONE
;
3673 acb
->acb_flag
|= RESET_DETECT
;
3674 reset_dev_param(acb
);
3675 doing_srb_done(acb
, DID_RESET
, NULL
, 1);
3676 /*DC395x_RecoverSRB( acb ); */
3677 acb
->active_dcb
= NULL
;
3679 waiting_process_next(acb
);
3684 static void request_sense(struct AdapterCtlBlk
*acb
, struct DeviceCtlBlk
*dcb
,
3685 struct ScsiReqBlk
*srb
)
3687 struct scsi_cmnd
*cmd
= srb
->cmd
;
3688 dprintkdbg(DBG_1
, "request_sense: (pid#%li) <%02i-%i>\n",
3689 cmd
->pid
, cmd
->device
->id
, cmd
->device
->lun
);
3691 srb
->flag
|= AUTO_REQSENSE
;
3692 srb
->adapter_status
= 0;
3693 srb
->target_status
= 0;
3695 /* KG: Can this prevent crap sense data ? */
3696 memset(cmd
->sense_buffer
, 0, sizeof(cmd
->sense_buffer
));
3698 /* Save some data */
3699 srb
->segment_x
[DC395x_MAX_SG_LISTENTRY
- 1].address
=
3700 srb
->segment_x
[0].address
;
3701 srb
->segment_x
[DC395x_MAX_SG_LISTENTRY
- 1].length
=
3702 srb
->segment_x
[0].length
;
3703 srb
->xferred
= srb
->total_xfer_length
;
3704 /* srb->segment_x : a one entry of S/G list table */
3705 srb
->total_xfer_length
= sizeof(cmd
->sense_buffer
);
3706 srb
->segment_x
[0].length
= sizeof(cmd
->sense_buffer
);
3707 /* Map sense buffer */
3708 srb
->segment_x
[0].address
=
3709 pci_map_single(acb
->dev
, cmd
->sense_buffer
,
3710 sizeof(cmd
->sense_buffer
), PCI_DMA_FROMDEVICE
);
3711 dprintkdbg(DBG_SG
, "request_sense: map buffer %p->%08x(%05x)\n",
3712 cmd
->sense_buffer
, srb
->segment_x
[0].address
,
3713 sizeof(cmd
->sense_buffer
));
3717 if (start_scsi(acb
, dcb
, srb
)) { /* Should only happen, if sb. else grabs the bus */
3718 dprintkl(KERN_DEBUG
,
3719 "request_sense: (pid#%li) failed <%02i-%i>\n",
3720 srb
->cmd
->pid
, dcb
->target_id
, dcb
->target_lun
);
3721 srb_going_to_waiting_move(dcb
, srb
);
3722 waiting_set_timer(acb
, HZ
/ 100);
3728 * device_alloc - Allocate a new device instance. This create the
3729 * devices instance and sets up all the data items. The adapter
3730 * instance is required to obtain confiuration information for this
3731 * device. This does *not* add this device to the adapters device
3734 * @acb: The adapter to obtain configuration information from.
3735 * @target: The target for the new device.
3736 * @lun: The lun for the new device.
3738 * Return the new device if succesfull or NULL on failure.
3740 static struct DeviceCtlBlk
*device_alloc(struct AdapterCtlBlk
*acb
,
3743 struct NvRamType
*eeprom
= &acb
->eeprom
;
3744 u8 period_index
= eeprom
->target
[target
].period
& 0x07;
3745 struct DeviceCtlBlk
*dcb
;
3747 dcb
= kmalloc(sizeof(struct DeviceCtlBlk
), GFP_ATOMIC
);
3748 dprintkdbg(DBG_0
, "device_alloc: <%02i-%i>\n", target
, lun
);
3752 INIT_LIST_HEAD(&dcb
->srb_going_list
);
3753 INIT_LIST_HEAD(&dcb
->srb_waiting_list
);
3754 dcb
->active_srb
= NULL
;
3756 dcb
->max_command
= 1;
3757 dcb
->target_id
= target
;
3758 dcb
->target_lun
= lun
;
3759 #ifndef DC395x_NO_DISCONNECT
3761 IDENTIFY(dcb
->dev_mode
& NTC_DO_DISCONNECT
, lun
);
3763 dcb
->identify_msg
= IDENTIFY(0, lun
);
3765 dcb
->dev_mode
= eeprom
->target
[target
].cfg0
;
3768 dcb
->min_nego_period
= clock_period
[period_index
];
3769 dcb
->sync_period
= 0;
3770 dcb
->sync_offset
= 0;
3773 #ifndef DC395x_NO_WIDE
3774 if ((dcb
->dev_mode
& NTC_DO_WIDE_NEGO
)
3775 && (acb
->config
& HCC_WIDE_CARD
))
3776 dcb
->sync_mode
|= WIDE_NEGO_ENABLE
;
3778 #ifndef DC395x_NO_SYNC
3779 if (dcb
->dev_mode
& NTC_DO_SYNC_NEGO
)
3780 if (!(lun
) || current_sync_offset
)
3781 dcb
->sync_mode
|= SYNC_NEGO_ENABLE
;
3783 if (dcb
->target_lun
!= 0) {
3785 struct DeviceCtlBlk
*p
;
3786 list_for_each_entry(p
, &acb
->dcb_list
, list
)
3787 if (p
->target_id
== dcb
->target_id
)
3790 "device_alloc: <%02i-%i> copy from <%02i-%i>\n",
3791 dcb
->target_id
, dcb
->target_lun
,
3792 p
->target_id
, p
->target_lun
);
3793 dcb
->sync_mode
= p
->sync_mode
;
3794 dcb
->sync_period
= p
->sync_period
;
3795 dcb
->min_nego_period
= p
->min_nego_period
;
3796 dcb
->sync_offset
= p
->sync_offset
;
3797 dcb
->inquiry7
= p
->inquiry7
;
3804 * adapter_add_device - Adds the device instance to the adaptor instance.
3806 * @acb: The adapter device to be updated
3807 * @dcb: A newly created and intialised device instance to add.
3809 static void adapter_add_device(struct AdapterCtlBlk
*acb
,
3810 struct DeviceCtlBlk
*dcb
)
3812 /* backpointer to adapter */
3815 /* set run_robin to this device if it is currently empty */
3816 if (list_empty(&acb
->dcb_list
))
3817 acb
->dcb_run_robin
= dcb
;
3819 /* add device to list */
3820 list_add_tail(&dcb
->list
, &acb
->dcb_list
);
3822 /* update device maps */
3823 acb
->dcb_map
[dcb
->target_id
] |= (1 << dcb
->target_lun
);
3824 acb
->children
[dcb
->target_id
][dcb
->target_lun
] = dcb
;
3829 * adapter_remove_device - Removes the device instance from the adaptor
3830 * instance. The device instance is not check in any way or freed by this.
3831 * The caller is expected to take care of that. This will simply remove the
3832 * device from the adapters data strcutures.
3834 * @acb: The adapter device to be updated
3835 * @dcb: A device that has previously been added to the adapter.
3837 static void adapter_remove_device(struct AdapterCtlBlk
*acb
,
3838 struct DeviceCtlBlk
*dcb
)
3840 struct DeviceCtlBlk
*i
;
3841 struct DeviceCtlBlk
*tmp
;
3842 dprintkdbg(DBG_0
, "adapter_remove_device: <%02i-%i>\n",
3843 dcb
->target_id
, dcb
->target_lun
);
3845 /* fix up any pointers to this device that we have in the adapter */
3846 if (acb
->active_dcb
== dcb
)
3847 acb
->active_dcb
= NULL
;
3848 if (acb
->dcb_run_robin
== dcb
)
3849 acb
->dcb_run_robin
= dcb_get_next(&acb
->dcb_list
, dcb
);
3851 /* unlink from list */
3852 list_for_each_entry_safe(i
, tmp
, &acb
->dcb_list
, list
)
3858 /* clear map and children */
3859 acb
->dcb_map
[dcb
->target_id
] &= ~(1 << dcb
->target_lun
);
3860 acb
->children
[dcb
->target_id
][dcb
->target_lun
] = NULL
;
3866 * adapter_remove_and_free_device - Removes a single device from the adapter
3867 * and then frees the device information.
3869 * @acb: The adapter device to be updated
3870 * @dcb: A device that has previously been added to the adapter.
3872 static void adapter_remove_and_free_device(struct AdapterCtlBlk
*acb
,
3873 struct DeviceCtlBlk
*dcb
)
3875 if (list_size(&dcb
->srb_going_list
) > 1) {
3876 dprintkdbg(DBG_1
, "adapter_remove_and_free_device: <%02i-%i> "
3877 "Won't remove because of %i active requests.\n",
3878 dcb
->target_id
, dcb
->target_lun
,
3879 list_size(&dcb
->srb_going_list
));
3882 adapter_remove_device(acb
, dcb
);
3888 * adapter_remove_and_free_all_devices - Removes and frees all of the
3889 * devices associated with the specified adapter.
3891 * @acb: The adapter from which all devices should be removed.
3893 static void adapter_remove_and_free_all_devices(struct AdapterCtlBlk
* acb
)
3895 struct DeviceCtlBlk
*dcb
;
3896 struct DeviceCtlBlk
*tmp
;
3897 dprintkdbg(DBG_1
, "adapter_remove_and_free_all_devices: num=%i\n",
3898 list_size(&acb
->dcb_list
));
3900 list_for_each_entry_safe(dcb
, tmp
, &acb
->dcb_list
, list
)
3901 adapter_remove_and_free_device(acb
, dcb
);
3906 * dc395x_slave_alloc - Called by the scsi mid layer to tell us about a new
3907 * scsi device that we need to deal with. We allocate a new device and then
3908 * insert that device into the adapters device list.
3910 * @scsi_device: The new scsi device that we need to handle.
3912 static int dc395x_slave_alloc(struct scsi_device
*scsi_device
)
3914 struct AdapterCtlBlk
*acb
= (struct AdapterCtlBlk
*)scsi_device
->host
->hostdata
;
3915 struct DeviceCtlBlk
*dcb
;
3917 dcb
= device_alloc(acb
, scsi_device
->id
, scsi_device
->lun
);
3920 adapter_add_device(acb
, dcb
);
3927 * dc395x_slave_destroy - Called by the scsi mid layer to tell us about a
3928 * device that is going away.
3930 * @scsi_device: The new scsi device that we need to handle.
3932 static void dc395x_slave_destroy(struct scsi_device
*scsi_device
)
3934 struct AdapterCtlBlk
*acb
= (struct AdapterCtlBlk
*)scsi_device
->host
->hostdata
;
3935 struct DeviceCtlBlk
*dcb
= find_dcb(acb
, scsi_device
->id
, scsi_device
->lun
);
3937 adapter_remove_and_free_device(acb
, dcb
);
3944 * trms1040_wait_30us: wait for 30 us
3946 * Waits for 30us (using the chip by the looks of it..)
3948 * @io_port: base I/O address
3950 static void __devinit
trms1040_wait_30us(unsigned long io_port
)
3952 /* ScsiPortStallExecution(30); wait 30 us */
3953 outb(5, io_port
+ TRM_S1040_GEN_TIMER
);
3954 while (!(inb(io_port
+ TRM_S1040_GEN_STATUS
) & GTIMEOUT
))
3960 * trms1040_write_cmd - write the secified command and address to
3963 * @io_port: base I/O address
3964 * @cmd: SB + op code (command) to send
3965 * @addr: address to send
3967 static void __devinit
trms1040_write_cmd(unsigned long io_port
, u8 cmd
, u8 addr
)
3972 /* program SB + OP code */
3973 for (i
= 0; i
< 3; i
++, cmd
<<= 1) {
3974 send_data
= NVR_SELECT
;
3975 if (cmd
& 0x04) /* Start from bit 2 */
3976 send_data
|= NVR_BITOUT
;
3978 outb(send_data
, io_port
+ TRM_S1040_GEN_NVRAM
);
3979 trms1040_wait_30us(io_port
);
3980 outb((send_data
| NVR_CLOCK
),
3981 io_port
+ TRM_S1040_GEN_NVRAM
);
3982 trms1040_wait_30us(io_port
);
3986 for (i
= 0; i
< 7; i
++, addr
<<= 1) {
3987 send_data
= NVR_SELECT
;
3988 if (addr
& 0x40) /* Start from bit 6 */
3989 send_data
|= NVR_BITOUT
;
3991 outb(send_data
, io_port
+ TRM_S1040_GEN_NVRAM
);
3992 trms1040_wait_30us(io_port
);
3993 outb((send_data
| NVR_CLOCK
),
3994 io_port
+ TRM_S1040_GEN_NVRAM
);
3995 trms1040_wait_30us(io_port
);
3997 outb(NVR_SELECT
, io_port
+ TRM_S1040_GEN_NVRAM
);
3998 trms1040_wait_30us(io_port
);
4003 * trms1040_set_data - store a single byte in the eeprom
4005 * Called from write all to write a single byte into the SSEEPROM
4006 * Which is done one bit at a time.
4008 * @io_port: base I/O address
4009 * @addr: offset into EEPROM
4010 * @byte: bytes to write
4012 static void __devinit
trms1040_set_data(unsigned long io_port
, u8 addr
, u8 byte
)
4017 /* Send write command & address */
4018 trms1040_write_cmd(io_port
, 0x05, addr
);
4021 for (i
= 0; i
< 8; i
++, byte
<<= 1) {
4022 send_data
= NVR_SELECT
;
4023 if (byte
& 0x80) /* Start from bit 7 */
4024 send_data
|= NVR_BITOUT
;
4026 outb(send_data
, io_port
+ TRM_S1040_GEN_NVRAM
);
4027 trms1040_wait_30us(io_port
);
4028 outb((send_data
| NVR_CLOCK
), io_port
+ TRM_S1040_GEN_NVRAM
);
4029 trms1040_wait_30us(io_port
);
4031 outb(NVR_SELECT
, io_port
+ TRM_S1040_GEN_NVRAM
);
4032 trms1040_wait_30us(io_port
);
4034 /* Disable chip select */
4035 outb(0, io_port
+ TRM_S1040_GEN_NVRAM
);
4036 trms1040_wait_30us(io_port
);
4038 outb(NVR_SELECT
, io_port
+ TRM_S1040_GEN_NVRAM
);
4039 trms1040_wait_30us(io_port
);
4041 /* Wait for write ready */
4043 outb((NVR_SELECT
| NVR_CLOCK
), 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 if (inb(io_port
+ TRM_S1040_GEN_NVRAM
) & NVR_BITIN
)
4053 /* Disable chip select */
4054 outb(0, io_port
+ TRM_S1040_GEN_NVRAM
);
4059 * trms1040_write_all - write 128 bytes to the eeprom
4061 * Write the supplied 128 bytes to the chips SEEPROM
4063 * @eeprom: the data to write
4064 * @io_port: the base io port
4066 static void __devinit
trms1040_write_all(struct NvRamType
*eeprom
, unsigned long io_port
)
4068 u8
*b_eeprom
= (u8
*)eeprom
;
4071 /* Enable SEEPROM */
4072 outb((inb(io_port
+ TRM_S1040_GEN_CONTROL
) | EN_EEPROM
),
4073 io_port
+ TRM_S1040_GEN_CONTROL
);
4076 trms1040_write_cmd(io_port
, 0x04, 0xFF);
4077 outb(0, io_port
+ TRM_S1040_GEN_NVRAM
);
4078 trms1040_wait_30us(io_port
);
4081 for (addr
= 0; addr
< 128; addr
++, b_eeprom
++)
4082 trms1040_set_data(io_port
, addr
, *b_eeprom
);
4085 trms1040_write_cmd(io_port
, 0x04, 0x00);
4086 outb(0, io_port
+ TRM_S1040_GEN_NVRAM
);
4087 trms1040_wait_30us(io_port
);
4089 /* Disable SEEPROM */
4090 outb((inb(io_port
+ TRM_S1040_GEN_CONTROL
) & ~EN_EEPROM
),
4091 io_port
+ TRM_S1040_GEN_CONTROL
);
4096 * trms1040_get_data - get a single byte from the eeprom
4098 * Called from read all to read a single byte into the SSEEPROM
4099 * Which is done one bit at a time.
4101 * @io_port: base I/O address
4102 * @addr: offset into SEEPROM
4104 * Returns the the byte read.
4106 static u8 __devinit
trms1040_get_data(unsigned long io_port
, u8 addr
)
4112 /* Send read command & address */
4113 trms1040_write_cmd(io_port
, 0x06, addr
);
4116 for (i
= 0; i
< 8; i
++) {
4117 outb((NVR_SELECT
| NVR_CLOCK
), io_port
+ TRM_S1040_GEN_NVRAM
);
4118 trms1040_wait_30us(io_port
);
4119 outb(NVR_SELECT
, io_port
+ TRM_S1040_GEN_NVRAM
);
4121 /* Get data bit while falling edge */
4122 read_byte
= inb(io_port
+ TRM_S1040_GEN_NVRAM
);
4124 if (read_byte
& NVR_BITIN
)
4127 trms1040_wait_30us(io_port
);
4130 /* Disable chip select */
4131 outb(0, io_port
+ TRM_S1040_GEN_NVRAM
);
4137 * trms1040_read_all - read all bytes from the eeprom
4139 * Read the 128 bytes from the SEEPROM.
4141 * @eeprom: where to store the data
4142 * @io_port: the base io port
4144 static void __devinit
trms1040_read_all(struct NvRamType
*eeprom
, unsigned long io_port
)
4146 u8
*b_eeprom
= (u8
*)eeprom
;
4149 /* Enable SEEPROM */
4150 outb((inb(io_port
+ TRM_S1040_GEN_CONTROL
) | EN_EEPROM
),
4151 io_port
+ TRM_S1040_GEN_CONTROL
);
4154 for (addr
= 0; addr
< 128; addr
++, b_eeprom
++)
4155 *b_eeprom
= trms1040_get_data(io_port
, addr
);
4157 /* Disable SEEPROM */
4158 outb((inb(io_port
+ TRM_S1040_GEN_CONTROL
) & ~EN_EEPROM
),
4159 io_port
+ TRM_S1040_GEN_CONTROL
);
4165 * check_eeprom - get and check contents of the eeprom
4167 * Read seeprom 128 bytes into the memory provider in eeprom.
4168 * Checks the checksum and if it's not correct it uses a set of default
4171 * @eeprom: caller allocated strcuture to read the eeprom data into
4172 * @io_port: io port to read from
4174 static void __devinit
check_eeprom(struct NvRamType
*eeprom
, unsigned long io_port
)
4176 u16
*w_eeprom
= (u16
*)eeprom
;
4182 trms1040_read_all(eeprom
, io_port
); /* read eeprom */
4185 for (w_addr
= 0, w_eeprom
= (u16
*)eeprom
; w_addr
< 64;
4186 w_addr
++, w_eeprom
++)
4188 if (cksum
!= 0x1234) {
4190 * Checksum is wrong.
4191 * Load a set of defaults into the eeprom buffer
4193 dprintkl(KERN_WARNING
,
4194 "EEProm checksum error: using default values and options.\n");
4195 eeprom
->sub_vendor_id
[0] = (u8
)PCI_VENDOR_ID_TEKRAM
;
4196 eeprom
->sub_vendor_id
[1] = (u8
)(PCI_VENDOR_ID_TEKRAM
>> 8);
4197 eeprom
->sub_sys_id
[0] = (u8
)PCI_DEVICE_ID_TEKRAM_TRMS1040
;
4198 eeprom
->sub_sys_id
[1] =
4199 (u8
)(PCI_DEVICE_ID_TEKRAM_TRMS1040
>> 8);
4200 eeprom
->sub_class
= 0x00;
4201 eeprom
->vendor_id
[0] = (u8
)PCI_VENDOR_ID_TEKRAM
;
4202 eeprom
->vendor_id
[1] = (u8
)(PCI_VENDOR_ID_TEKRAM
>> 8);
4203 eeprom
->device_id
[0] = (u8
)PCI_DEVICE_ID_TEKRAM_TRMS1040
;
4204 eeprom
->device_id
[1] =
4205 (u8
)(PCI_DEVICE_ID_TEKRAM_TRMS1040
>> 8);
4206 eeprom
->reserved
= 0x00;
4208 for (d_addr
= 0, d_eeprom
= (u32
*)eeprom
->target
;
4209 d_addr
< 16; d_addr
++, d_eeprom
++)
4210 *d_eeprom
= 0x00000077; /* cfg3,cfg2,period,cfg0 */
4212 *d_eeprom
++ = 0x04000F07; /* max_tag,delay_time,channel_cfg,scsi_id */
4213 *d_eeprom
++ = 0x00000015; /* reserved1,boot_lun,boot_target,reserved0 */
4214 for (d_addr
= 0; d_addr
< 12; d_addr
++, d_eeprom
++)
4217 /* Now load defaults (maybe set by boot/module params) */
4218 set_safe_settings();
4220 eeprom_override(eeprom
);
4222 eeprom
->cksum
= 0x00;
4223 for (w_addr
= 0, cksum
= 0, w_eeprom
= (u16
*)eeprom
;
4224 w_addr
< 63; w_addr
++, w_eeprom
++)
4227 *w_eeprom
= 0x1234 - cksum
;
4228 trms1040_write_all(eeprom
, io_port
);
4229 eeprom
->delay_time
= cfg_data
[CFG_RESET_DELAY
].value
;
4231 set_safe_settings();
4232 eeprom_index_to_delay(eeprom
);
4233 eeprom_override(eeprom
);
4239 * print_eeprom_settings - output the eeprom settings
4240 * to the kernel log so people can see what they were.
4242 * @eeprom: The eeprom data strucutre to show details for.
4244 static void __devinit
print_eeprom_settings(struct NvRamType
*eeprom
)
4246 dprintkl(KERN_INFO
, "Used settings: AdapterID=%02i, Speed=%i(%02i.%01iMHz), dev_mode=0x%02x\n",
4248 eeprom
->target
[0].period
,
4249 clock_speed
[eeprom
->target
[0].period
] / 10,
4250 clock_speed
[eeprom
->target
[0].period
] % 10,
4251 eeprom
->target
[0].cfg0
);
4252 dprintkl(KERN_INFO
, " AdaptMode=0x%02x, Tags=%i(%02i), DelayReset=%is\n",
4253 eeprom
->channel_cfg
, eeprom
->max_tag
,
4254 1 << eeprom
->max_tag
, eeprom
->delay_time
);
4258 /* Free SG tables */
4259 static void adapter_sg_tables_free(struct AdapterCtlBlk
*acb
)
4262 const unsigned srbs_per_page
= PAGE_SIZE
/SEGMENTX_LEN
;
4264 for (i
= 0; i
< DC395x_MAX_SRB_CNT
; i
+= srbs_per_page
)
4265 kfree(acb
->srb_array
[i
].segment_x
);
4267 vfree(acb
->srb_array
[0].virt_map
);
4272 * Allocate SG tables; as we have to pci_map them, an SG list (struct SGentry*)
4273 * should never cross a page boundary */
4274 static int __devinit
adapter_sg_tables_alloc(struct AdapterCtlBlk
*acb
)
4276 const unsigned mem_needed
= (DC395x_MAX_SRB_CNT
+1)
4278 int pages
= (mem_needed
+(PAGE_SIZE
-1))/PAGE_SIZE
;
4279 const unsigned srbs_per_page
= PAGE_SIZE
/SEGMENTX_LEN
;
4282 struct SGentry
*ptr
;
4285 for (i
= 0; i
< DC395x_MAX_SRB_CNT
; i
++) {
4286 acb
->srb_array
[i
].segment_x
= NULL
;
4287 acb
->srb_array
[i
].virt_map
= NULL
;
4290 dprintkdbg(DBG_1
, "Allocate %i pages for SG tables\n", pages
);
4292 ptr
= (struct SGentry
*)kmalloc(PAGE_SIZE
, GFP_KERNEL
);
4294 adapter_sg_tables_free(acb
);
4297 dprintkdbg(DBG_1
, "Allocate %li bytes at %p for SG segments %i\n",
4298 PAGE_SIZE
, ptr
, srb_idx
);
4300 while (i
< srbs_per_page
&& srb_idx
< DC395x_MAX_SRB_CNT
)
4301 acb
->srb_array
[srb_idx
++].segment_x
=
4302 ptr
+ (i
++ * DC395x_MAX_SG_LISTENTRY
);
4304 if (i
< srbs_per_page
)
4305 acb
->srb
.segment_x
=
4306 ptr
+ (i
* DC395x_MAX_SG_LISTENTRY
);
4308 dprintkl(KERN_DEBUG
, "No space for tmsrb SG table reserved?!\n");
4310 virt_array
= vmalloc((DC395x_MAX_SRB_CNT
+ 1) * DC395x_MAX_SG_LISTENTRY
* sizeof(void*));
4313 adapter_sg_tables_free(acb
);
4317 for (i
= 0; i
< DC395x_MAX_SRB_CNT
+ 1; i
++) {
4318 acb
->srb_array
[i
].virt_map
= virt_array
;
4319 virt_array
+= DC395x_MAX_SG_LISTENTRY
;
4328 * adapter_print_config - print adapter connection and termination
4331 * The io port in the adapter needs to have been set before calling
4334 * @acb: The adapter to print the information for.
4336 static void __devinit
adapter_print_config(struct AdapterCtlBlk
*acb
)
4340 bval
= DC395x_read8(acb
, TRM_S1040_GEN_STATUS
);
4341 dprintkl(KERN_INFO
, "%sConnectors: ",
4342 ((bval
& WIDESCSI
) ? "(Wide) " : ""));
4343 if (!(bval
& CON5068
))
4344 printk("ext%s ", !(bval
& EXT68HIGH
) ? "68" : "50");
4345 if (!(bval
& CON68
))
4346 printk("int68%s ", !(bval
& INT68HIGH
) ? "" : "(50)");
4347 if (!(bval
& CON50
))
4349 if ((bval
& (CON5068
| CON50
| CON68
)) ==
4350 0 /*(CON5068 | CON50 | CON68) */ )
4351 printk(" Oops! (All 3?) ");
4352 bval
= DC395x_read8(acb
, TRM_S1040_GEN_CONTROL
);
4353 printk(" Termination: ");
4354 if (bval
& DIS_TERM
)
4355 printk("Disabled\n");
4357 if (bval
& AUTOTERM
)
4359 if (bval
& LOW8TERM
)
4369 * adapter_init_params - Initialize the various parameters in the
4370 * adapter structure. Note that the pointer to the scsi_host is set
4371 * early (when this instance is created) and the io_port and irq
4372 * values are set later after they have been reserved. This just gets
4373 * everything set to a good starting position.
4375 * The eeprom structure in the adapter needs to have been set before
4376 * calling this function.
4378 * @acb: The adapter to initialize.
4380 static void __devinit
adapter_init_params(struct AdapterCtlBlk
*acb
)
4382 struct NvRamType
*eeprom
= &acb
->eeprom
;
4385 /* NOTE: acb->scsi_host is set at scsi_host/acb creation time */
4386 /* NOTE: acb->io_port_base is set at port registration time */
4387 /* NOTE: acb->io_port_len is set at port registration time */
4389 INIT_LIST_HEAD(&acb
->dcb_list
);
4390 acb
->dcb_run_robin
= NULL
;
4391 acb
->active_dcb
= NULL
;
4393 INIT_LIST_HEAD(&acb
->srb_free_list
);
4394 /* temp SRB for Q tag used or abort command used */
4395 acb
->tmp_srb
= &acb
->srb
;
4396 init_timer(&acb
->waiting_timer
);
4397 init_timer(&acb
->selto_timer
);
4399 acb
->srb_count
= DC395x_MAX_SRB_CNT
;
4401 acb
->sel_timeout
= DC395x_SEL_TIMEOUT
; /* timeout=250ms */
4402 /* NOTE: acb->irq_level is set at IRQ registration time */
4404 acb
->tag_max_num
= 1 << eeprom
->max_tag
;
4405 if (acb
->tag_max_num
> 30)
4406 acb
->tag_max_num
= 30;
4408 acb
->acb_flag
= 0; /* RESET_DETECT, RESET_DONE, RESET_DEV */
4409 acb
->gmode2
= eeprom
->channel_cfg
;
4410 acb
->config
= 0; /* NOTE: actually set in adapter_init_chip */
4412 if (eeprom
->channel_cfg
& NAC_SCANLUN
)
4414 acb
->scan_devices
= 1;
4416 acb
->scsi_host
->this_id
= eeprom
->scsi_id
;
4417 acb
->hostid_bit
= (1 << acb
->scsi_host
->this_id
);
4419 for (i
= 0; i
< DC395x_MAX_SCSI_ID
; i
++)
4420 acb
->dcb_map
[i
] = 0;
4424 /* link static array of srbs into the srb free list */
4425 for (i
= 0; i
< acb
->srb_count
- 1; i
++)
4426 srb_free_insert(acb
, &acb
->srb_array
[i
]);
4431 * adapter_init_host - Initialize the scsi host instance based on
4432 * values that we have already stored in the adapter instance. There's
4433 * some mention that a lot of these are deprecated, so we won't use
4434 * them (we'll use the ones in the adapter instance) but we'll fill
4435 * them in in case something else needs them.
4437 * The eeprom structure, irq and io ports in the adapter need to have
4438 * been set before calling this function.
4440 * @host: The scsi host instance to fill in the values for.
4442 static void __devinit
adapter_init_scsi_host(struct Scsi_Host
*host
)
4444 struct AdapterCtlBlk
*acb
= (struct AdapterCtlBlk
*)host
->hostdata
;
4445 struct NvRamType
*eeprom
= &acb
->eeprom
;
4447 host
->max_cmd_len
= 24;
4448 host
->can_queue
= DC395x_MAX_CMD_QUEUE
;
4449 host
->cmd_per_lun
= DC395x_MAX_CMD_PER_LUN
;
4450 host
->this_id
= (int)eeprom
->scsi_id
;
4451 host
->io_port
= acb
->io_port_base
;
4452 host
->n_io_port
= acb
->io_port_len
;
4453 host
->dma_channel
= -1;
4454 host
->unique_id
= acb
->io_port_base
;
4455 host
->irq
= acb
->irq_level
;
4456 host
->last_reset
= jiffies
;
4459 if (host
->max_id
- 1 == eeprom
->scsi_id
)
4462 #ifdef CONFIG_SCSI_MULTI_LUN
4463 if (eeprom
->channel_cfg
& NAC_SCANLUN
)
4475 * adapter_init_chip - Get the chip into a know state and figure out
4476 * some of the settings that apply to this adapter.
4478 * The io port in the adapter needs to have been set before calling
4479 * this function. The config will be configured correctly on return.
4481 * @acb: The adapter which we are to init.
4483 static void __devinit
adapter_init_chip(struct AdapterCtlBlk
*acb
)
4485 struct NvRamType
*eeprom
= &acb
->eeprom
;
4487 /* Mask all the interrupt */
4488 DC395x_write8(acb
, TRM_S1040_DMA_INTEN
, 0x00);
4489 DC395x_write8(acb
, TRM_S1040_SCSI_INTEN
, 0x00);
4491 /* Reset SCSI module */
4492 DC395x_write16(acb
, TRM_S1040_SCSI_CONTROL
, DO_RSTMODULE
);
4494 /* Reset PCI/DMA module */
4495 DC395x_write8(acb
, TRM_S1040_DMA_CONTROL
, DMARESETMODULE
);
4498 /* program configuration 0 */
4499 acb
->config
= HCC_AUTOTERM
| HCC_PARITY
;
4500 if (DC395x_read8(acb
, TRM_S1040_GEN_STATUS
) & WIDESCSI
)
4501 acb
->config
|= HCC_WIDE_CARD
;
4503 if (eeprom
->channel_cfg
& NAC_POWERON_SCSI_RESET
)
4504 acb
->config
|= HCC_SCSI_RESET
;
4506 if (acb
->config
& HCC_SCSI_RESET
) {
4507 dprintkl(KERN_INFO
, "Performing initial SCSI bus reset\n");
4508 DC395x_write8(acb
, TRM_S1040_SCSI_CONTROL
, DO_RSTSCSI
);
4510 /*while (!( DC395x_read8(acb, TRM_S1040_SCSI_INTSTATUS) & INT_SCSIRESET )); */
4511 /*spin_unlock_irq (&io_request_lock); */
4514 acb
->scsi_host
->last_reset
=
4516 HZ
* acb
->eeprom
.delay_time
;
4518 /*spin_lock_irq (&io_request_lock); */
4524 * init_adapter - Grab the resource for the card, setup the adapter
4525 * information, set the card into a known state, create the various
4526 * tables etc etc. This basically gets all adapter information all up
4527 * to date, intialised and gets the chip in sync with it.
4529 * @host: This hosts adapter structure
4530 * @io_port: The base I/O port
4533 * Returns 0 if the initialization succeeds, any other value on
4536 static int __devinit
adapter_init(struct AdapterCtlBlk
*acb
,
4537 unsigned long io_port
, u32 io_port_len
, unsigned int irq
)
4539 if (!request_region(io_port
, io_port_len
, DC395X_NAME
)) {
4540 dprintkl(KERN_ERR
, "Failed to reserve IO region 0x%lx\n", io_port
);
4543 /* store port base to indicate we have registered it */
4544 acb
->io_port_base
= io_port
;
4545 acb
->io_port_len
= io_port_len
;
4547 if (request_irq(irq
, dc395x_interrupt
, SA_SHIRQ
, DC395X_NAME
, acb
)) {
4548 /* release the region we just claimed */
4549 dprintkl(KERN_INFO
, "Failed to register IRQ\n");
4552 /* store irq to indicate we have registered it */
4553 acb
->irq_level
= irq
;
4555 /* get eeprom configuration information and command line settings etc */
4556 check_eeprom(&acb
->eeprom
, io_port
);
4557 print_eeprom_settings(&acb
->eeprom
);
4559 /* setup adapter control block */
4560 adapter_init_params(acb
);
4562 /* display card connectors/termination settings */
4563 adapter_print_config(acb
);
4565 if (adapter_sg_tables_alloc(acb
)) {
4566 dprintkl(KERN_DEBUG
, "Memory allocation for SG tables failed\n");
4569 adapter_init_scsi_host(acb
->scsi_host
);
4570 adapter_init_chip(acb
);
4571 set_basic_config(acb
);
4574 "adapter_init: acb=%p, pdcb_map=%p psrb_array=%p "
4575 "size{acb=0x%04x dcb=0x%04x srb=0x%04x}\n",
4576 acb
, acb
->dcb_map
, acb
->srb_array
, sizeof(struct AdapterCtlBlk
),
4577 sizeof(struct DeviceCtlBlk
), sizeof(struct ScsiReqBlk
));
4582 free_irq(acb
->irq_level
, acb
);
4583 if (acb
->io_port_base
)
4584 release_region(acb
->io_port_base
, acb
->io_port_len
);
4585 adapter_sg_tables_free(acb
);
4592 * adapter_uninit_chip - cleanly shut down the scsi controller chip,
4593 * stopping all operations and disabling interrupt generation on the
4596 * @acb: The adapter which we are to shutdown.
4598 static void adapter_uninit_chip(struct AdapterCtlBlk
*acb
)
4600 /* disable interrupts */
4601 DC395x_write8(acb
, TRM_S1040_DMA_INTEN
, 0);
4602 DC395x_write8(acb
, TRM_S1040_SCSI_INTEN
, 0);
4604 /* reset the scsi bus */
4605 if (acb
->config
& HCC_SCSI_RESET
)
4606 reset_scsi_bus(acb
);
4608 /* clear any pending interupt state */
4609 DC395x_read8(acb
, TRM_S1040_SCSI_INTSTATUS
);
4615 * adapter_uninit - Shut down the chip and release any resources that
4616 * we had allocated. Once this returns the adapter should not be used
4619 * @acb: The adapter which we are to un-initialize.
4621 static void adapter_uninit(struct AdapterCtlBlk
*acb
)
4623 unsigned long flags
;
4624 DC395x_LOCK_IO(acb
->scsi_host
, flags
);
4627 if (timer_pending(&acb
->waiting_timer
))
4628 del_timer(&acb
->waiting_timer
);
4629 if (timer_pending(&acb
->selto_timer
))
4630 del_timer(&acb
->selto_timer
);
4632 adapter_uninit_chip(acb
);
4633 adapter_remove_and_free_all_devices(acb
);
4634 DC395x_UNLOCK_IO(acb
->scsi_host
, flags
);
4637 free_irq(acb
->irq_level
, acb
);
4638 if (acb
->io_port_base
)
4639 release_region(acb
->io_port_base
, acb
->io_port_len
);
4641 adapter_sg_tables_free(acb
);
4646 #define SPRINTF(args...) pos += sprintf(pos, args)
4650 if (YN) SPRINTF(" Yes ");\
4651 else SPRINTF(" No ")
4653 static int dc395x_proc_info(struct Scsi_Host
*host
, char *buffer
,
4654 char **start
, off_t offset
, int length
, int inout
)
4656 struct AdapterCtlBlk
*acb
= (struct AdapterCtlBlk
*)host
->hostdata
;
4659 struct DeviceCtlBlk
*dcb
;
4660 unsigned long flags
;
4663 if (inout
) /* Has data been written to the file ? */
4666 SPRINTF(DC395X_BANNER
" PCI SCSI Host Adapter\n");
4667 SPRINTF(" Driver Version " DC395X_VERSION
"\n");
4669 DC395x_LOCK_IO(acb
->scsi_host
, flags
);
4671 SPRINTF("SCSI Host Nr %i, ", host
->host_no
);
4672 SPRINTF("DC395U/UW/F DC315/U %s\n",
4673 (acb
->config
& HCC_WIDE_CARD
) ? "Wide" : "");
4674 SPRINTF("io_port_base 0x%04lx, ", acb
->io_port_base
);
4675 SPRINTF("irq_level 0x%04x, ", acb
->irq_level
);
4676 SPRINTF(" SelTimeout %ims\n", (1638 * acb
->sel_timeout
) / 1000);
4678 SPRINTF("MaxID %i, MaxLUN %i, ", host
->max_id
, host
->max_lun
);
4679 SPRINTF("AdapterID %i\n", host
->this_id
);
4681 SPRINTF("tag_max_num %i", acb
->tag_max_num
);
4682 /*SPRINTF(", DMA_Status %i\n", DC395x_read8(acb, TRM_S1040_DMA_STATUS)); */
4683 SPRINTF(", FilterCfg 0x%02x",
4684 DC395x_read8(acb
, TRM_S1040_SCSI_CONFIG1
));
4685 SPRINTF(", DelayReset %is\n", acb
->eeprom
.delay_time
);
4688 SPRINTF("Nr of DCBs: %i\n", list_size(&acb
->dcb_list
));
4690 ("Map of attached LUNs: %02x %02x %02x %02x %02x %02x %02x %02x\n",
4691 acb
->dcb_map
[0], acb
->dcb_map
[1], acb
->dcb_map
[2],
4692 acb
->dcb_map
[3], acb
->dcb_map
[4], acb
->dcb_map
[5],
4693 acb
->dcb_map
[6], acb
->dcb_map
[7]);
4695 (" %02x %02x %02x %02x %02x %02x %02x %02x\n",
4696 acb
->dcb_map
[8], acb
->dcb_map
[9], acb
->dcb_map
[10],
4697 acb
->dcb_map
[11], acb
->dcb_map
[12], acb
->dcb_map
[13],
4698 acb
->dcb_map
[14], acb
->dcb_map
[15]);
4701 ("Un ID LUN Prty Sync Wide DsCn SndS TagQ nego_period SyncFreq SyncOffs MaxCmd\n");
4704 list_for_each_entry(dcb
, &acb
->dcb_list
, list
) {
4706 SPRINTF("%02i %02i %02i ", dev
, dcb
->target_id
,
4708 YESNO(dcb
->dev_mode
& NTC_DO_PARITY_CHK
);
4709 YESNO(dcb
->sync_offset
);
4710 YESNO(dcb
->sync_period
& WIDE_SYNC
);
4711 YESNO(dcb
->dev_mode
& NTC_DO_DISCONNECT
);
4712 YESNO(dcb
->dev_mode
& NTC_DO_SEND_START
);
4713 YESNO(dcb
->sync_mode
& EN_TAG_QUEUEING
);
4714 nego_period
= clock_period
[dcb
->sync_period
& 0x07] << 2;
4715 if (dcb
->sync_offset
)
4716 SPRINTF(" %03i ns ", nego_period
);
4718 SPRINTF(" (%03i ns)", (dcb
->min_nego_period
<< 2));
4720 if (dcb
->sync_offset
& 0x0f) {
4721 spd
= 1000 / (nego_period
);
4722 spd1
= 1000 % (nego_period
);
4723 spd1
= (spd1
* 10 + nego_period
/ 2) / (nego_period
);
4724 SPRINTF(" %2i.%1i M %02i ", spd
, spd1
,
4725 (dcb
->sync_offset
& 0x0f));
4729 /* Add more info ... */
4730 SPRINTF(" %02i\n", dcb
->max_command
);
4734 if (timer_pending(&acb
->waiting_timer
))
4735 SPRINTF("Waiting queue timer running\n");
4739 list_for_each_entry(dcb
, &acb
->dcb_list
, list
) {
4740 struct ScsiReqBlk
*srb
;
4741 if (!list_empty(&dcb
->srb_waiting_list
))
4742 SPRINTF("DCB (%02i-%i): Waiting: %i:",
4743 dcb
->target_id
, dcb
->target_lun
,
4744 list_size(&dcb
->srb_waiting_list
));
4745 list_for_each_entry(srb
, &dcb
->srb_waiting_list
, list
)
4746 SPRINTF(" %li", srb
->cmd
->pid
);
4747 if (!list_empty(&dcb
->srb_going_list
))
4748 SPRINTF("\nDCB (%02i-%i): Going : %i:",
4749 dcb
->target_id
, dcb
->target_lun
,
4750 list_size(&dcb
->srb_going_list
));
4751 list_for_each_entry(srb
, &dcb
->srb_going_list
, list
)
4752 SPRINTF(" %li", srb
->cmd
->pid
);
4753 if (!list_empty(&dcb
->srb_waiting_list
) || !list_empty(&dcb
->srb_going_list
))
4757 if (debug_enabled(DBG_1
)) {
4758 SPRINTF("DCB list for ACB %p:\n", acb
);
4759 list_for_each_entry(dcb
, &acb
->dcb_list
, list
) {
4760 SPRINTF("%p -> ", dcb
);
4765 *start
= buffer
+ offset
;
4766 DC395x_UNLOCK_IO(acb
->scsi_host
, flags
);
4768 if (pos
- buffer
< offset
)
4770 else if (pos
- buffer
- offset
< length
)
4771 return pos
- buffer
- offset
;
4777 static struct scsi_host_template dc395x_driver_template
= {
4778 .module
= THIS_MODULE
,
4779 .proc_name
= DC395X_NAME
,
4780 .proc_info
= dc395x_proc_info
,
4781 .name
= DC395X_BANNER
" " DC395X_VERSION
,
4782 .queuecommand
= dc395x_queue_command
,
4783 .bios_param
= dc395x_bios_param
,
4784 .slave_alloc
= dc395x_slave_alloc
,
4785 .slave_destroy
= dc395x_slave_destroy
,
4786 .can_queue
= DC395x_MAX_CAN_QUEUE
,
4788 .sg_tablesize
= DC395x_MAX_SG_TABLESIZE
,
4789 .cmd_per_lun
= DC395x_MAX_CMD_PER_LUN
,
4790 .eh_abort_handler
= dc395x_eh_abort
,
4791 .eh_bus_reset_handler
= dc395x_eh_bus_reset
,
4792 .unchecked_isa_dma
= 0,
4793 .use_clustering
= DISABLE_CLUSTERING
,
4798 * banner_display - Display banner on first instance of driver
4801 static void banner_display(void)
4803 static int banner_done
= 0;
4806 dprintkl(KERN_INFO
, "%s %s\n", DC395X_BANNER
, DC395X_VERSION
);
4813 * dc395x_init_one - Initialise a single instance of the adapter.
4815 * The PCI layer will call this once for each instance of the adapter
4816 * that it finds in the system. The pci_dev strcuture indicates which
4817 * instance we are being called from.
4819 * @dev: The PCI device to intialize.
4820 * @id: Looks like a pointer to the entry in our pci device table
4821 * that was actually matched by the PCI subsystem.
4823 * Returns 0 on success, or an error code (-ve) on failure.
4825 static int __devinit
dc395x_init_one(struct pci_dev
*dev
,
4826 const struct pci_device_id
*id
)
4828 struct Scsi_Host
*scsi_host
= NULL
;
4829 struct AdapterCtlBlk
*acb
= NULL
;
4830 unsigned long io_port_base
;
4831 unsigned int io_port_len
;
4834 dprintkdbg(DBG_0
, "Init one instance (%s)\n", pci_name(dev
));
4837 if (pci_enable_device(dev
))
4839 dprintkl(KERN_INFO
, "PCI Enable device failed.\n");
4842 io_port_base
= pci_resource_start(dev
, 0) & PCI_BASE_ADDRESS_IO_MASK
;
4843 io_port_len
= pci_resource_len(dev
, 0);
4845 dprintkdbg(DBG_0
, "IO_PORT=0x%04lx, IRQ=0x%x\n", io_port_base
, dev
->irq
);
4847 /* allocate scsi host information (includes out adapter) */
4848 scsi_host
= scsi_host_alloc(&dc395x_driver_template
,
4849 sizeof(struct AdapterCtlBlk
));
4851 dprintkl(KERN_INFO
, "scsi_host_alloc failed\n");
4854 acb
= (struct AdapterCtlBlk
*)scsi_host
->hostdata
;
4855 acb
->scsi_host
= scsi_host
;
4858 /* initialise the adapter and everything we need */
4859 if (adapter_init(acb
, io_port_base
, io_port_len
, irq
)) {
4860 dprintkl(KERN_INFO
, "adapter init failed\n");
4864 pci_set_master(dev
);
4866 /* get the scsi mid level to scan for new devices on the bus */
4867 if (scsi_add_host(scsi_host
, &dev
->dev
)) {
4868 dprintkl(KERN_ERR
, "scsi_add_host failed\n");
4871 pci_set_drvdata(dev
, scsi_host
);
4872 scsi_scan_host(scsi_host
);
4878 adapter_uninit(acb
);
4879 if (scsi_host
!= NULL
)
4880 scsi_host_put(scsi_host
);
4881 pci_disable_device(dev
);
4887 * dc395x_remove_one - Called to remove a single instance of the
4890 * @dev: The PCI device to intialize.
4892 static void __devexit
dc395x_remove_one(struct pci_dev
*dev
)
4894 struct Scsi_Host
*scsi_host
= pci_get_drvdata(dev
);
4895 struct AdapterCtlBlk
*acb
= (struct AdapterCtlBlk
*)(scsi_host
->hostdata
);
4897 dprintkdbg(DBG_0
, "dc395x_remove_one: acb=%p\n", acb
);
4899 scsi_remove_host(scsi_host
);
4900 adapter_uninit(acb
);
4901 pci_disable_device(dev
);
4902 scsi_host_put(scsi_host
);
4903 pci_set_drvdata(dev
, NULL
);
4907 static struct pci_device_id dc395x_pci_table
[] = {
4909 .vendor
= PCI_VENDOR_ID_TEKRAM
,
4910 .device
= PCI_DEVICE_ID_TEKRAM_TRMS1040
,
4911 .subvendor
= PCI_ANY_ID
,
4912 .subdevice
= PCI_ANY_ID
,
4914 {} /* Terminating entry */
4916 MODULE_DEVICE_TABLE(pci
, dc395x_pci_table
);
4919 static struct pci_driver dc395x_driver
= {
4920 .name
= DC395X_NAME
,
4921 .id_table
= dc395x_pci_table
,
4922 .probe
= dc395x_init_one
,
4923 .remove
= __devexit_p(dc395x_remove_one
),
4928 * dc395x_module_init - Module initialization function
4930 * Used by both module and built-in driver to initialise this driver.
4932 static int __init
dc395x_module_init(void)
4934 return pci_module_init(&dc395x_driver
);
4939 * dc395x_module_exit - Module cleanup function.
4941 static void __exit
dc395x_module_exit(void)
4943 pci_unregister_driver(&dc395x_driver
);
4947 module_init(dc395x_module_init
);
4948 module_exit(dc395x_module_exit
);
4950 MODULE_AUTHOR("C.L. Huang / Erich Chen / Kurt Garloff");
4951 MODULE_DESCRIPTION("SCSI host adapter driver for Tekram TRM-S1040 based adapters: Tekram DC395 and DC315 series");
4952 MODULE_LICENSE("GPL");