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>
60 #include <linux/slab.h>
63 #include <scsi/scsi.h>
64 #include <scsi/scsi_cmnd.h>
65 #include <scsi/scsi_device.h>
66 #include <scsi/scsi_host.h>
67 #include <scsi/scsi_transport_spi.h>
71 #define DC395X_NAME "dc395x"
72 #define DC395X_BANNER "Tekram DC395(U/UW/F), DC315(U) - ASIC TRM-S1040"
73 #define DC395X_VERSION "v2.05, 2004/03/08"
75 /*---------------------------------------------------------------------------
77 ---------------------------------------------------------------------------*/
79 * Set to disable parts of the driver
81 /*#define DC395x_NO_DISCONNECT*/
82 /*#define DC395x_NO_TAGQ*/
83 /*#define DC395x_NO_SYNC*/
84 /*#define DC395x_NO_WIDE*/
86 /*---------------------------------------------------------------------------
88 ---------------------------------------------------------------------------*/
90 * Types of debugging that can be enabled and disabled
96 #define DBG_FIFO 0x0040
97 #define DBG_PIO 0x0080
101 * Set set of things to output debugging for.
102 * Undefine to remove all debugging
104 /*#define DEBUG_MASK (DBG_0|DBG_1|DBG_SG|DBG_FIFO|DBG_PIO)*/
105 /*#define DEBUG_MASK DBG_0*/
109 * Output a kernel mesage at the specified level and append the
110 * driver name and a ": " to the start of the message
112 #define dprintkl(level, format, arg...) \
113 printk(level DC395X_NAME ": " format , ## arg)
118 * print a debug message - this is formated with KERN_DEBUG, then the
119 * driver name followed by a ": " and then the message is output.
120 * This also checks that the specified debug level is enabled before
121 * outputing the message
123 #define dprintkdbg(type, format, arg...) \
125 if ((type) & (DEBUG_MASK)) \
126 dprintkl(KERN_DEBUG , format , ## arg); \
130 * Check if the specified type of debugging is enabled
132 #define debug_enabled(type) ((DEBUG_MASK) & (type))
136 * No debugging. Do nothing
138 #define dprintkdbg(type, format, arg...) \
140 #define debug_enabled(type) (0)
145 #ifndef PCI_VENDOR_ID_TEKRAM
146 #define PCI_VENDOR_ID_TEKRAM 0x1DE1 /* Vendor ID */
148 #ifndef PCI_DEVICE_ID_TEKRAM_TRMS1040
149 #define PCI_DEVICE_ID_TEKRAM_TRMS1040 0x0391 /* Device ID */
153 #define DC395x_LOCK_IO(dev,flags) spin_lock_irqsave(((struct Scsi_Host *)dev)->host_lock, flags)
154 #define DC395x_UNLOCK_IO(dev,flags) spin_unlock_irqrestore(((struct Scsi_Host *)dev)->host_lock, flags)
156 #define DC395x_read8(acb,address) (u8)(inb(acb->io_port_base + (address)))
157 #define DC395x_read16(acb,address) (u16)(inw(acb->io_port_base + (address)))
158 #define DC395x_read32(acb,address) (u32)(inl(acb->io_port_base + (address)))
159 #define DC395x_write8(acb,address,value) outb((value), acb->io_port_base + (address))
160 #define DC395x_write16(acb,address,value) outw((value), acb->io_port_base + (address))
161 #define DC395x_write32(acb,address,value) outl((value), acb->io_port_base + (address))
166 * srb->segement_x is the hw sg list. It is always allocated as a
167 * DC395x_MAX_SG_LISTENTRY entries in a linear block which does not
168 * cross a page boundy.
170 #define SEGMENTX_LEN (sizeof(struct SGentry)*DC395x_MAX_SG_LISTENTRY)
174 u32 address; /* bus! address */
178 /* The SEEPROM structure for TRM_S1040 */
180 u8 cfg0; /* Target configuration byte 0 */
181 u8 period; /* Target period */
182 u8 cfg2; /* Target configuration byte 2 */
183 u8 cfg3; /* Target configuration byte 3 */
187 u8 sub_vendor_id[2]; /* 0,1 Sub Vendor ID */
188 u8 sub_sys_id[2]; /* 2,3 Sub System ID */
189 u8 sub_class; /* 4 Sub Class */
190 u8 vendor_id[2]; /* 5,6 Vendor ID */
191 u8 device_id[2]; /* 7,8 Device ID */
192 u8 reserved; /* 9 Reserved */
193 struct NVRamTarget target[DC395x_MAX_SCSI_ID];
200 u8 scsi_id; /* 74 Host Adapter SCSI ID */
201 u8 channel_cfg; /* 75 Channel configuration */
202 u8 delay_time; /* 76 Power on delay time */
203 u8 max_tag; /* 77 Maximum tags */
204 u8 reserved0; /* 78 */
205 u8 boot_target; /* 79 */
206 u8 boot_lun; /* 80 */
207 u8 reserved1; /* 81 */
208 u16 reserved2[22]; /* 82,..125 */
209 u16 cksum; /* 126,127 */
213 struct list_head list; /* next/prev ptrs for srb lists */
214 struct DeviceCtlBlk *dcb;
215 struct scsi_cmnd *cmd;
217 struct SGentry *segment_x; /* Linear array of hw sg entries (up to 64 entries) */
218 dma_addr_t sg_bus_addr; /* Bus address of sg list (ie, of segment_x) */
220 u8 sg_count; /* No of HW sg entries for this request */
221 u8 sg_index; /* Index of HW sg entry for this request */
222 size_t total_xfer_length; /* Total number of bytes remaining to be transferred */
223 size_t request_length; /* Total number of bytes in this request */
225 * The sense buffer handling function, request_sense, uses
226 * the first hw sg entry (segment_x[0]) and the transfer
227 * length (total_xfer_length). While doing this it stores the
228 * original values into the last sg hw list
229 * (srb->segment_x[DC395x_MAX_SG_LISTENTRY - 1] and the
230 * total_xfer_length in xferred. These values are restored in
231 * pci_unmap_srb_sense. This is the only place xferred is used.
233 size_t xferred; /* Saved copy of total_xfer_length */
253 struct DeviceCtlBlk {
254 struct list_head list; /* next/prev ptrs for the dcb list */
255 struct AdapterCtlBlk *acb;
256 struct list_head srb_going_list; /* head of going srb list */
257 struct list_head srb_waiting_list; /* head of waiting srb list */
259 struct ScsiReqBlk *active_srb;
264 u8 target_id; /* SCSI Target ID (SCSI Only) */
265 u8 target_lun; /* SCSI Log. Unit (SCSI Only) */
269 u8 inquiry7; /* To store Inquiry flags */
270 u8 sync_mode; /* 0:async mode */
271 u8 min_nego_period; /* for nego. */
272 u8 sync_period; /* for reg. */
274 u8 sync_offset; /* for reg. and nego.(low nibble) */
280 struct AdapterCtlBlk {
281 struct Scsi_Host *scsi_host;
283 unsigned long io_port_base;
284 unsigned long io_port_len;
286 struct list_head dcb_list; /* head of going dcb list */
287 struct DeviceCtlBlk *dcb_run_robin;
288 struct DeviceCtlBlk *active_dcb;
290 struct list_head srb_free_list; /* head of free srb list */
291 struct ScsiReqBlk *tmp_srb;
292 struct timer_list waiting_timer;
293 struct timer_list selto_timer;
295 unsigned long last_reset;
301 unsigned int irq_level;
311 u8 dcb_map[DC395x_MAX_SCSI_ID];
312 struct DeviceCtlBlk *children[DC395x_MAX_SCSI_ID][32];
318 struct ScsiReqBlk srb_array[DC395x_MAX_SRB_CNT];
319 struct ScsiReqBlk srb;
321 struct NvRamType eeprom; /* eeprom settings for this adapter */
325 /*---------------------------------------------------------------------------
327 ---------------------------------------------------------------------------*/
328 static void data_out_phase0(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb,
330 static void data_in_phase0(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb,
332 static void command_phase0(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb,
334 static void status_phase0(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb,
336 static void msgout_phase0(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb,
338 static void msgin_phase0(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb,
340 static void data_out_phase1(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb,
342 static void data_in_phase1(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb,
344 static void command_phase1(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb,
346 static void status_phase1(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb,
348 static void msgout_phase1(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb,
350 static void msgin_phase1(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb,
352 static void nop0(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb,
354 static void nop1(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb,
356 static void set_basic_config(struct AdapterCtlBlk *acb);
357 static void cleanup_after_transfer(struct AdapterCtlBlk *acb,
358 struct ScsiReqBlk *srb);
359 static void reset_scsi_bus(struct AdapterCtlBlk *acb);
360 static void data_io_transfer(struct AdapterCtlBlk *acb,
361 struct ScsiReqBlk *srb, u16 io_dir);
362 static void disconnect(struct AdapterCtlBlk *acb);
363 static void reselect(struct AdapterCtlBlk *acb);
364 static u8 start_scsi(struct AdapterCtlBlk *acb, struct DeviceCtlBlk *dcb,
365 struct ScsiReqBlk *srb);
366 static inline void enable_msgout_abort(struct AdapterCtlBlk *acb,
367 struct ScsiReqBlk *srb);
368 static void build_srb(struct scsi_cmnd *cmd, struct DeviceCtlBlk *dcb,
369 struct ScsiReqBlk *srb);
370 static void doing_srb_done(struct AdapterCtlBlk *acb, u8 did_code,
371 struct scsi_cmnd *cmd, u8 force);
372 static void scsi_reset_detect(struct AdapterCtlBlk *acb);
373 static void pci_unmap_srb(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb);
374 static void pci_unmap_srb_sense(struct AdapterCtlBlk *acb,
375 struct ScsiReqBlk *srb);
376 static void srb_done(struct AdapterCtlBlk *acb, struct DeviceCtlBlk *dcb,
377 struct ScsiReqBlk *srb);
378 static void request_sense(struct AdapterCtlBlk *acb, struct DeviceCtlBlk *dcb,
379 struct ScsiReqBlk *srb);
380 static void set_xfer_rate(struct AdapterCtlBlk *acb,
381 struct DeviceCtlBlk *dcb);
382 static void waiting_timeout(struct timer_list *t);
385 /*---------------------------------------------------------------------------
387 ---------------------------------------------------------------------------*/
388 static u16 current_sync_offset = 0;
390 static void *dc395x_scsi_phase0[] = {
391 data_out_phase0,/* phase:0 */
392 data_in_phase0, /* phase:1 */
393 command_phase0, /* phase:2 */
394 status_phase0, /* phase:3 */
395 nop0, /* phase:4 PH_BUS_FREE .. initial phase */
396 nop0, /* phase:5 PH_BUS_FREE .. initial phase */
397 msgout_phase0, /* phase:6 */
398 msgin_phase0, /* phase:7 */
401 static void *dc395x_scsi_phase1[] = {
402 data_out_phase1,/* phase:0 */
403 data_in_phase1, /* phase:1 */
404 command_phase1, /* phase:2 */
405 status_phase1, /* phase:3 */
406 nop1, /* phase:4 PH_BUS_FREE .. initial phase */
407 nop1, /* phase:5 PH_BUS_FREE .. initial phase */
408 msgout_phase1, /* phase:6 */
409 msgin_phase1, /* phase:7 */
413 *Fast20: 000 50ns, 20.0 MHz
415 * 010 100ns, 10.0 MHz
422 *Fast40(LVDS): 000 25ns, 40.0 MHz
425 * 011 100ns, 10.0 MHz
431 /*static u8 clock_period[] = {12,19,25,31,37,44,50,62};*/
433 /* real period:48ns,76ns,100ns,124ns,148ns,176ns,200ns,248ns */
434 static u8 clock_period[] = { 12, 18, 25, 31, 37, 43, 50, 62 };
435 static u16 clock_speed[] = { 200, 133, 100, 80, 67, 58, 50, 40 };
438 /*---------------------------------------------------------------------------
440 ---------------------------------------------------------------------------*/
442 * Module/boot parameters currently effect *all* instances of the
443 * card in the system.
447 * Command line parameters are stored in a structure below.
448 * These are the index's into the structure for the various
449 * command line options.
451 #define CFG_ADAPTER_ID 0
452 #define CFG_MAX_SPEED 1
453 #define CFG_DEV_MODE 2
454 #define CFG_ADAPTER_MODE 3
456 #define CFG_RESET_DELAY 5
458 #define CFG_NUM 6 /* number of configuration items */
462 * Value used to indicate that a command line override
463 * hasn't been used to modify the value.
465 #define CFG_PARAM_UNSET -1
469 * Hold command line parameters.
471 struct ParameterData {
472 int value; /* value of this setting */
473 int min; /* minimum value */
474 int max; /* maximum value */
475 int def; /* default value */
476 int safe; /* safe value */
478 static struct ParameterData cfg_data[] = {
497 NTC_DO_PARITY_CHK | NTC_DO_DISCONNECT | NTC_DO_SYNC_NEGO |
498 NTC_DO_WIDE_NEGO | NTC_DO_TAG_QUEUEING |
500 NTC_DO_PARITY_CHK | NTC_DO_SEND_START
507 NAC_GT2DRIVES | NAC_GREATER_1G | NAC_POWERON_SCSI_RESET
508 /*| NAC_ACTIVE_NEG*/,
509 NAC_GT2DRIVES | NAC_GREATER_1G | NAC_POWERON_SCSI_RESET | 0x08
515 3, /* 16 tags (??) */
529 * Safe settings. If set to zero the BIOS/default values with
530 * command line overrides will be used. If set to 1 then safe and
531 * slow settings will be used.
533 static bool use_safe_settings = 0;
534 module_param_named(safe, use_safe_settings, bool, 0);
535 MODULE_PARM_DESC(safe, "Use safe and slow settings only. Default: false");
538 module_param_named(adapter_id, cfg_data[CFG_ADAPTER_ID].value, int, 0);
539 MODULE_PARM_DESC(adapter_id, "Adapter SCSI ID. Default 7 (0-15)");
541 module_param_named(max_speed, cfg_data[CFG_MAX_SPEED].value, int, 0);
542 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");
544 module_param_named(dev_mode, cfg_data[CFG_DEV_MODE].value, int, 0);
545 MODULE_PARM_DESC(dev_mode, "Device mode.");
547 module_param_named(adapter_mode, cfg_data[CFG_ADAPTER_MODE].value, int, 0);
548 MODULE_PARM_DESC(adapter_mode, "Adapter mode.");
550 module_param_named(tags, cfg_data[CFG_TAGS].value, int, 0);
551 MODULE_PARM_DESC(tags, "Number of tags (1<<x). Default 3 (0-5)");
553 module_param_named(reset_delay, cfg_data[CFG_RESET_DELAY].value, int, 0);
554 MODULE_PARM_DESC(reset_delay, "Reset delay in seconds. Default 1 (0-180)");
558 * set_safe_settings - if the use_safe_settings option is set then
559 * set all values to the safe and slow values.
561 static void set_safe_settings(void)
563 if (use_safe_settings)
567 dprintkl(KERN_INFO, "Using safe settings.\n");
568 for (i = 0; i < CFG_NUM; i++)
570 cfg_data[i].value = cfg_data[i].safe;
577 * fix_settings - reset any boot parameters which are out of range
578 * back to the default values.
580 static void fix_settings(void)
585 "setup: AdapterId=%08x MaxSpeed=%08x DevMode=%08x "
586 "AdapterMode=%08x Tags=%08x ResetDelay=%08x\n",
587 cfg_data[CFG_ADAPTER_ID].value,
588 cfg_data[CFG_MAX_SPEED].value,
589 cfg_data[CFG_DEV_MODE].value,
590 cfg_data[CFG_ADAPTER_MODE].value,
591 cfg_data[CFG_TAGS].value,
592 cfg_data[CFG_RESET_DELAY].value);
593 for (i = 0; i < CFG_NUM; i++)
595 if (cfg_data[i].value < cfg_data[i].min
596 || cfg_data[i].value > cfg_data[i].max)
597 cfg_data[i].value = cfg_data[i].def;
604 * Mapping from the eeprom delay index value (index into this array)
605 * to the number of actual seconds that the delay should be for.
607 static char eeprom_index_to_delay_map[] =
608 { 1, 3, 5, 10, 16, 30, 60, 120 };
612 * eeprom_index_to_delay - Take the eeprom delay setting and convert it
613 * into a number of seconds.
615 * @eeprom: The eeprom structure in which we find the delay index to map.
617 static void eeprom_index_to_delay(struct NvRamType *eeprom)
619 eeprom->delay_time = eeprom_index_to_delay_map[eeprom->delay_time];
624 * delay_to_eeprom_index - Take a delay in seconds and return the
625 * closest eeprom index which will delay for at least that amount of
628 * @delay: The delay, in seconds, to find the eeprom index for.
630 static int delay_to_eeprom_index(int delay)
633 while (idx < 7 && eeprom_index_to_delay_map[idx] < delay)
640 * eeprom_override - Override the eeprom settings, in the provided
641 * eeprom structure, with values that have been set on the command
644 * @eeprom: The eeprom data to override with command line options.
646 static void eeprom_override(struct NvRamType *eeprom)
650 /* Adapter Settings */
651 if (cfg_data[CFG_ADAPTER_ID].value != CFG_PARAM_UNSET)
652 eeprom->scsi_id = (u8)cfg_data[CFG_ADAPTER_ID].value;
654 if (cfg_data[CFG_ADAPTER_MODE].value != CFG_PARAM_UNSET)
655 eeprom->channel_cfg = (u8)cfg_data[CFG_ADAPTER_MODE].value;
657 if (cfg_data[CFG_RESET_DELAY].value != CFG_PARAM_UNSET)
658 eeprom->delay_time = delay_to_eeprom_index(
659 cfg_data[CFG_RESET_DELAY].value);
661 if (cfg_data[CFG_TAGS].value != CFG_PARAM_UNSET)
662 eeprom->max_tag = (u8)cfg_data[CFG_TAGS].value;
664 /* Device Settings */
665 for (id = 0; id < DC395x_MAX_SCSI_ID; id++) {
666 if (cfg_data[CFG_DEV_MODE].value != CFG_PARAM_UNSET)
667 eeprom->target[id].cfg0 =
668 (u8)cfg_data[CFG_DEV_MODE].value;
670 if (cfg_data[CFG_MAX_SPEED].value != CFG_PARAM_UNSET)
671 eeprom->target[id].period =
672 (u8)cfg_data[CFG_MAX_SPEED].value;
678 /*---------------------------------------------------------------------------
679 ---------------------------------------------------------------------------*/
681 static unsigned int list_size(struct list_head *head)
683 unsigned int count = 0;
684 struct list_head *pos;
685 list_for_each(pos, head)
691 static struct DeviceCtlBlk *dcb_get_next(struct list_head *head,
692 struct DeviceCtlBlk *pos)
695 struct DeviceCtlBlk* next = NULL;
696 struct DeviceCtlBlk* i;
698 if (list_empty(head))
701 /* find supplied dcb and then select the next one */
702 list_for_each_entry(i, head, list)
706 } else if (i == pos) {
709 /* if no next one take the head one (ie, wraparound) */
711 list_for_each_entry(i, head, list) {
720 static void free_tag(struct DeviceCtlBlk *dcb, struct ScsiReqBlk *srb)
722 if (srb->tag_number < 255) {
723 dcb->tag_mask &= ~(1 << srb->tag_number); /* free tag mask */
724 srb->tag_number = 255;
729 /* Find cmd in SRB list */
730 static inline struct ScsiReqBlk *find_cmd(struct scsi_cmnd *cmd,
731 struct list_head *head)
733 struct ScsiReqBlk *i;
734 list_for_each_entry(i, head, list)
740 /* Sets the timer to wake us up */
741 static void waiting_set_timer(struct AdapterCtlBlk *acb, unsigned long to)
743 if (timer_pending(&acb->waiting_timer))
745 if (time_before(jiffies + to, acb->last_reset - HZ / 2))
746 acb->waiting_timer.expires =
747 acb->last_reset - HZ / 2 + 1;
749 acb->waiting_timer.expires = jiffies + to + 1;
750 add_timer(&acb->waiting_timer);
754 /* Send the next command from the waiting list to the bus */
755 static void waiting_process_next(struct AdapterCtlBlk *acb)
757 struct DeviceCtlBlk *start = NULL;
758 struct DeviceCtlBlk *pos;
759 struct DeviceCtlBlk *dcb;
760 struct ScsiReqBlk *srb;
761 struct list_head *dcb_list_head = &acb->dcb_list;
764 || (acb->acb_flag & (RESET_DETECT + RESET_DONE + RESET_DEV)))
767 if (timer_pending(&acb->waiting_timer))
768 del_timer(&acb->waiting_timer);
770 if (list_empty(dcb_list_head))
774 * Find the starting dcb. Need to find it again in the list
775 * since the list may have changed since we set the ptr to it
777 list_for_each_entry(dcb, dcb_list_head, list)
778 if (dcb == acb->dcb_run_robin) {
783 /* This can happen! */
784 start = list_entry(dcb_list_head->next, typeof(*start), list);
785 acb->dcb_run_robin = start;
790 * Loop over the dcb, but we start somewhere (potentially) in
791 * the middle of the loop so we need to manully do this.
795 struct list_head *waiting_list_head = &pos->srb_waiting_list;
797 /* Make sure, the next another device gets scheduled ... */
798 acb->dcb_run_robin = dcb_get_next(dcb_list_head,
801 if (list_empty(waiting_list_head) ||
802 pos->max_command <= list_size(&pos->srb_going_list)) {
803 /* move to next dcb */
804 pos = dcb_get_next(dcb_list_head, pos);
806 srb = list_entry(waiting_list_head->next,
807 struct ScsiReqBlk, list);
809 /* Try to send to the bus */
810 if (!start_scsi(acb, pos, srb))
811 list_move(&srb->list, &pos->srb_going_list);
813 waiting_set_timer(acb, HZ/50);
816 } while (pos != start);
820 /* Wake up waiting queue */
821 static void waiting_timeout(struct timer_list *t)
824 struct AdapterCtlBlk *acb = from_timer(acb, t, waiting_timer);
826 "waiting_timeout: Queue woken up by timer. acb=%p\n", acb);
827 DC395x_LOCK_IO(acb->scsi_host, flags);
828 waiting_process_next(acb);
829 DC395x_UNLOCK_IO(acb->scsi_host, flags);
833 /* Get the DCB for a given ID/LUN combination */
834 static struct DeviceCtlBlk *find_dcb(struct AdapterCtlBlk *acb, u8 id, u8 lun)
836 return acb->children[id][lun];
840 /* Send SCSI Request Block (srb) to adapter (acb) */
841 static void send_srb(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb)
843 struct DeviceCtlBlk *dcb = srb->dcb;
845 if (dcb->max_command <= list_size(&dcb->srb_going_list) ||
847 (acb->acb_flag & (RESET_DETECT + RESET_DONE + RESET_DEV))) {
848 list_add_tail(&srb->list, &dcb->srb_waiting_list);
849 waiting_process_next(acb);
853 if (!start_scsi(acb, dcb, srb)) {
854 list_add_tail(&srb->list, &dcb->srb_going_list);
856 list_add(&srb->list, &dcb->srb_waiting_list);
857 waiting_set_timer(acb, HZ / 50);
861 /* Prepare SRB for being sent to Device DCB w/ command *cmd */
862 static void build_srb(struct scsi_cmnd *cmd, struct DeviceCtlBlk *dcb,
863 struct ScsiReqBlk *srb)
866 enum dma_data_direction dir = cmd->sc_data_direction;
867 dprintkdbg(DBG_0, "build_srb: (0x%p) <%02i-%i>\n",
868 cmd, dcb->target_id, dcb->target_lun);
873 srb->total_xfer_length = 0;
874 srb->sg_bus_addr = 0;
876 srb->adapter_status = 0;
877 srb->target_status = 0;
882 srb->retry_count = 0;
883 srb->tag_number = TAG_NONE;
884 srb->scsi_phase = PH_BUS_FREE; /* initial phase */
885 srb->end_message = 0;
887 nseg = scsi_dma_map(cmd);
890 if (dir == DMA_NONE || !nseg) {
892 "build_srb: [0] len=%d buf=%p use_sg=%d !MAP=%08x\n",
893 cmd->bufflen, scsi_sglist(cmd), scsi_sg_count(cmd),
894 srb->segment_x[0].address);
897 u32 reqlen = scsi_bufflen(cmd);
898 struct scatterlist *sg;
899 struct SGentry *sgp = srb->segment_x;
901 srb->sg_count = nseg;
904 "build_srb: [n] len=%d buf=%p use_sg=%d segs=%d\n",
905 reqlen, scsi_sglist(cmd), scsi_sg_count(cmd),
908 scsi_for_each_sg(cmd, sg, srb->sg_count, i) {
909 u32 busaddr = (u32)sg_dma_address(sg);
910 u32 seglen = (u32)sg->length;
911 sgp[i].address = busaddr;
912 sgp[i].length = seglen;
913 srb->total_xfer_length += seglen;
915 sgp += srb->sg_count - 1;
918 * adjust last page if too big as it is allocated
919 * on even page boundaries
921 if (srb->total_xfer_length > reqlen) {
922 sgp->length -= (srb->total_xfer_length - reqlen);
923 srb->total_xfer_length = reqlen;
926 /* Fixup for WIDE padding - make sure length is even */
927 if (dcb->sync_period & WIDE_SYNC &&
928 srb->total_xfer_length % 2) {
929 srb->total_xfer_length++;
933 srb->sg_bus_addr = dma_map_single(&dcb->acb->dev->dev,
934 srb->segment_x, SEGMENTX_LEN, DMA_TO_DEVICE);
936 dprintkdbg(DBG_SG, "build_srb: [n] map sg %p->%08x(%05x)\n",
937 srb->segment_x, srb->sg_bus_addr, SEGMENTX_LEN);
940 srb->request_length = srb->total_xfer_length;
945 * dc395x_queue_command_lck - queue scsi command passed from the mid
946 * layer, invoke 'done' on completion
948 * @cmd: pointer to scsi command object
949 * @done: function pointer to be invoked on completion
951 * Returns 1 if the adapter (host) is busy, else returns 0. One
952 * reason for an adapter to be busy is that the number
953 * of outstanding queued commands is already equal to
954 * struct Scsi_Host::can_queue .
956 * Required: if struct Scsi_Host::can_queue is ever non-zero
957 * then this function is required.
959 * Locks: struct Scsi_Host::host_lock held on entry (with "irqsave")
960 * and is expected to be held on return.
963 static int dc395x_queue_command_lck(struct scsi_cmnd *cmd)
965 void (*done)(struct scsi_cmnd *) = scsi_done;
966 struct DeviceCtlBlk *dcb;
967 struct ScsiReqBlk *srb;
968 struct AdapterCtlBlk *acb =
969 (struct AdapterCtlBlk *)cmd->device->host->hostdata;
970 dprintkdbg(DBG_0, "queue_command: (0x%p) <%02i-%i> cmnd=0x%02x\n",
971 cmd, cmd->device->id, (u8)cmd->device->lun, cmd->cmnd[0]);
973 /* Assume BAD_TARGET; will be cleared later */
974 set_host_byte(cmd, DID_BAD_TARGET);
976 /* ignore invalid targets */
977 if (cmd->device->id >= acb->scsi_host->max_id ||
978 cmd->device->lun >= acb->scsi_host->max_lun ||
979 cmd->device->lun >31) {
983 /* does the specified lun on the specified device exist */
984 if (!(acb->dcb_map[cmd->device->id] & (1 << cmd->device->lun))) {
985 dprintkl(KERN_INFO, "queue_command: Ignore target <%02i-%i>\n",
986 cmd->device->id, (u8)cmd->device->lun);
990 /* do we have a DCB for the device */
991 dcb = find_dcb(acb, cmd->device->id, cmd->device->lun);
993 /* should never happen */
994 dprintkl(KERN_ERR, "queue_command: No such device <%02i-%i>",
995 cmd->device->id, (u8)cmd->device->lun);
999 set_host_byte(cmd, DID_OK);
1000 set_status_byte(cmd, SAM_STAT_GOOD);
1002 srb = list_first_entry_or_null(&acb->srb_free_list,
1003 struct ScsiReqBlk, list);
1006 * Return 1 since we are unable to queue this command at this
1009 dprintkdbg(DBG_0, "queue_command: No free srb's\n");
1012 list_del(&srb->list);
1014 build_srb(cmd, dcb, srb);
1016 if (!list_empty(&dcb->srb_waiting_list)) {
1017 /* append to waiting queue */
1018 list_add_tail(&srb->list, &dcb->srb_waiting_list);
1019 waiting_process_next(acb);
1021 /* process immediately */
1024 dprintkdbg(DBG_1, "queue_command: (0x%p) done\n", cmd);
1029 * Complete the command immediatey, and then return 0 to
1030 * indicate that we have handled the command. This is usually
1031 * done when the commad is for things like non existent
1038 static DEF_SCSI_QCMD(dc395x_queue_command)
1040 static void dump_register_info(struct AdapterCtlBlk *acb,
1041 struct DeviceCtlBlk *dcb, struct ScsiReqBlk *srb)
1044 struct pci_dev *dev = acb->dev;
1045 pci_read_config_word(dev, PCI_STATUS, &pstat);
1047 dcb = acb->active_dcb;
1049 srb = dcb->active_srb;
1052 dprintkl(KERN_INFO, "dump: srb=%p cmd=%p OOOPS!\n",
1055 dprintkl(KERN_INFO, "dump: srb=%p cmd=%p "
1056 "cmnd=0x%02x <%02i-%i>\n",
1058 srb->cmd->cmnd[0], srb->cmd->device->id,
1059 (u8)srb->cmd->device->lun);
1060 printk(" sglist=%p cnt=%i idx=%i len=%zu\n",
1061 srb->segment_x, srb->sg_count, srb->sg_index,
1062 srb->total_xfer_length);
1063 printk(" state=0x%04x status=0x%02x phase=0x%02x (%sconn.)\n",
1064 srb->state, srb->status, srb->scsi_phase,
1065 (acb->active_dcb) ? "" : "not");
1067 dprintkl(KERN_INFO, "dump: SCSI{status=0x%04x fifocnt=0x%02x "
1068 "signals=0x%02x irqstat=0x%02x sync=0x%02x target=0x%02x "
1069 "rselid=0x%02x ctr=0x%08x irqen=0x%02x config=0x%04x "
1070 "config2=0x%02x cmd=0x%02x selto=0x%02x}\n",
1071 DC395x_read16(acb, TRM_S1040_SCSI_STATUS),
1072 DC395x_read8(acb, TRM_S1040_SCSI_FIFOCNT),
1073 DC395x_read8(acb, TRM_S1040_SCSI_SIGNAL),
1074 DC395x_read8(acb, TRM_S1040_SCSI_INTSTATUS),
1075 DC395x_read8(acb, TRM_S1040_SCSI_SYNC),
1076 DC395x_read8(acb, TRM_S1040_SCSI_TARGETID),
1077 DC395x_read8(acb, TRM_S1040_SCSI_IDMSG),
1078 DC395x_read32(acb, TRM_S1040_SCSI_COUNTER),
1079 DC395x_read8(acb, TRM_S1040_SCSI_INTEN),
1080 DC395x_read16(acb, TRM_S1040_SCSI_CONFIG0),
1081 DC395x_read8(acb, TRM_S1040_SCSI_CONFIG2),
1082 DC395x_read8(acb, TRM_S1040_SCSI_COMMAND),
1083 DC395x_read8(acb, TRM_S1040_SCSI_TIMEOUT));
1084 dprintkl(KERN_INFO, "dump: DMA{cmd=0x%04x fifocnt=0x%02x fstat=0x%02x "
1085 "irqstat=0x%02x irqen=0x%02x cfg=0x%04x tctr=0x%08x "
1086 "ctctr=0x%08x addr=0x%08x:0x%08x}\n",
1087 DC395x_read16(acb, TRM_S1040_DMA_COMMAND),
1088 DC395x_read8(acb, TRM_S1040_DMA_FIFOCNT),
1089 DC395x_read8(acb, TRM_S1040_DMA_FIFOSTAT),
1090 DC395x_read8(acb, TRM_S1040_DMA_STATUS),
1091 DC395x_read8(acb, TRM_S1040_DMA_INTEN),
1092 DC395x_read16(acb, TRM_S1040_DMA_CONFIG),
1093 DC395x_read32(acb, TRM_S1040_DMA_XCNT),
1094 DC395x_read32(acb, TRM_S1040_DMA_CXCNT),
1095 DC395x_read32(acb, TRM_S1040_DMA_XHIGHADDR),
1096 DC395x_read32(acb, TRM_S1040_DMA_XLOWADDR));
1097 dprintkl(KERN_INFO, "dump: gen{gctrl=0x%02x gstat=0x%02x gtmr=0x%02x} "
1098 "pci{status=0x%04x}\n",
1099 DC395x_read8(acb, TRM_S1040_GEN_CONTROL),
1100 DC395x_read8(acb, TRM_S1040_GEN_STATUS),
1101 DC395x_read8(acb, TRM_S1040_GEN_TIMER),
1106 static inline void clear_fifo(struct AdapterCtlBlk *acb, char *txt)
1108 #if debug_enabled(DBG_FIFO)
1109 u8 lines = DC395x_read8(acb, TRM_S1040_SCSI_SIGNAL);
1110 u8 fifocnt = DC395x_read8(acb, TRM_S1040_SCSI_FIFOCNT);
1111 if (!(fifocnt & 0x40))
1112 dprintkdbg(DBG_FIFO,
1113 "clear_fifo: (%i bytes) on phase %02x in %s\n",
1114 fifocnt & 0x3f, lines, txt);
1116 DC395x_write16(acb, TRM_S1040_SCSI_CONTROL, DO_CLRFIFO);
1120 static void reset_dev_param(struct AdapterCtlBlk *acb)
1122 struct DeviceCtlBlk *dcb;
1123 struct NvRamType *eeprom = &acb->eeprom;
1124 dprintkdbg(DBG_0, "reset_dev_param: acb=%p\n", acb);
1126 list_for_each_entry(dcb, &acb->dcb_list, list) {
1129 dcb->sync_mode &= ~(SYNC_NEGO_DONE + WIDE_NEGO_DONE);
1130 dcb->sync_period = 0;
1131 dcb->sync_offset = 0;
1133 dcb->dev_mode = eeprom->target[dcb->target_id].cfg0;
1134 period_index = eeprom->target[dcb->target_id].period & 0x07;
1135 dcb->min_nego_period = clock_period[period_index];
1136 if (!(dcb->dev_mode & NTC_DO_WIDE_NEGO)
1137 || !(acb->config & HCC_WIDE_CARD))
1138 dcb->sync_mode &= ~WIDE_NEGO_ENABLE;
1144 * perform a hard reset on the SCSI bus
1145 * @cmd - some command for this host (for fetching hooks)
1146 * Returns: SUCCESS (0x2002) on success, else FAILED (0x2003).
1148 static int __dc395x_eh_bus_reset(struct scsi_cmnd *cmd)
1150 struct AdapterCtlBlk *acb =
1151 (struct AdapterCtlBlk *)cmd->device->host->hostdata;
1153 "eh_bus_reset: (0%p) target=<%02i-%i> cmd=%p\n",
1154 cmd, cmd->device->id, (u8)cmd->device->lun, cmd);
1156 if (timer_pending(&acb->waiting_timer))
1157 del_timer(&acb->waiting_timer);
1162 DC395x_write8(acb, TRM_S1040_DMA_INTEN, 0x00);
1163 DC395x_write8(acb, TRM_S1040_SCSI_INTEN, 0x00);
1164 DC395x_write8(acb, TRM_S1040_SCSI_CONTROL, DO_RSTMODULE);
1165 DC395x_write8(acb, TRM_S1040_DMA_CONTROL, DMARESETMODULE);
1167 reset_scsi_bus(acb);
1170 /* We may be in serious trouble. Wait some seconds */
1172 jiffies + 3 * HZ / 2 +
1173 HZ * acb->eeprom.delay_time;
1176 * re-enable interrupt
1178 /* Clear SCSI FIFO */
1179 DC395x_write8(acb, TRM_S1040_DMA_CONTROL, CLRXFIFO);
1180 clear_fifo(acb, "eh_bus_reset");
1181 /* Delete pending IRQ */
1182 DC395x_read8(acb, TRM_S1040_SCSI_INTSTATUS);
1183 set_basic_config(acb);
1185 reset_dev_param(acb);
1186 doing_srb_done(acb, DID_RESET, cmd, 0);
1187 acb->active_dcb = NULL;
1188 acb->acb_flag = 0; /* RESET_DETECT, RESET_DONE ,RESET_DEV */
1189 waiting_process_next(acb);
1194 static int dc395x_eh_bus_reset(struct scsi_cmnd *cmd)
1198 spin_lock_irq(cmd->device->host->host_lock);
1199 rc = __dc395x_eh_bus_reset(cmd);
1200 spin_unlock_irq(cmd->device->host->host_lock);
1206 * abort an errant SCSI command
1207 * @cmd - command to be aborted
1208 * Returns: SUCCESS (0x2002) on success, else FAILED (0x2003).
1210 static int dc395x_eh_abort(struct scsi_cmnd *cmd)
1213 * Look into our command queues: If it has not been sent already,
1214 * we remove it and return success. Otherwise fail.
1216 struct AdapterCtlBlk *acb =
1217 (struct AdapterCtlBlk *)cmd->device->host->hostdata;
1218 struct DeviceCtlBlk *dcb;
1219 struct ScsiReqBlk *srb;
1220 dprintkl(KERN_INFO, "eh_abort: (0x%p) target=<%02i-%i> cmd=%p\n",
1221 cmd, cmd->device->id, (u8)cmd->device->lun, cmd);
1223 dcb = find_dcb(acb, cmd->device->id, cmd->device->lun);
1225 dprintkl(KERN_DEBUG, "eh_abort: No such device\n");
1229 srb = find_cmd(cmd, &dcb->srb_waiting_list);
1231 list_del(&srb->list);
1232 pci_unmap_srb_sense(acb, srb);
1233 pci_unmap_srb(acb, srb);
1235 list_add_tail(&srb->list, &acb->srb_free_list);
1236 dprintkl(KERN_DEBUG, "eh_abort: Command was waiting\n");
1237 set_host_byte(cmd, DID_ABORT);
1240 srb = find_cmd(cmd, &dcb->srb_going_list);
1242 dprintkl(KERN_DEBUG, "eh_abort: Command in progress\n");
1243 /* XXX: Should abort the command here */
1245 dprintkl(KERN_DEBUG, "eh_abort: Command not found\n");
1252 static void build_sdtr(struct AdapterCtlBlk *acb, struct DeviceCtlBlk *dcb,
1253 struct ScsiReqBlk *srb)
1255 u8 *ptr = srb->msgout_buf + srb->msg_count;
1256 if (srb->msg_count > 1) {
1258 "build_sdtr: msgout_buf BUSY (%i: %02x %02x)\n",
1259 srb->msg_count, srb->msgout_buf[0],
1260 srb->msgout_buf[1]);
1263 if (!(dcb->dev_mode & NTC_DO_SYNC_NEGO)) {
1264 dcb->sync_offset = 0;
1265 dcb->min_nego_period = 200 >> 2;
1266 } else if (dcb->sync_offset == 0)
1267 dcb->sync_offset = SYNC_NEGO_OFFSET;
1269 srb->msg_count += spi_populate_sync_msg(ptr, dcb->min_nego_period,
1271 srb->state |= SRB_DO_SYNC_NEGO;
1276 static void build_wdtr(struct AdapterCtlBlk *acb, struct DeviceCtlBlk *dcb,
1277 struct ScsiReqBlk *srb)
1279 u8 wide = ((dcb->dev_mode & NTC_DO_WIDE_NEGO) &
1280 (acb->config & HCC_WIDE_CARD)) ? 1 : 0;
1281 u8 *ptr = srb->msgout_buf + srb->msg_count;
1282 if (srb->msg_count > 1) {
1284 "build_wdtr: msgout_buf BUSY (%i: %02x %02x)\n",
1285 srb->msg_count, srb->msgout_buf[0],
1286 srb->msgout_buf[1]);
1289 srb->msg_count += spi_populate_width_msg(ptr, wide);
1290 srb->state |= SRB_DO_WIDE_NEGO;
1295 /* Timer to work around chip flaw: When selecting and the bus is
1296 * busy, we sometimes miss a Selection timeout IRQ */
1297 void selection_timeout_missed(unsigned long ptr);
1298 /* Sets the timer to wake us up */
1299 static void selto_timer(struct AdapterCtlBlk *acb)
1301 if (timer_pending(&acb->selto_timer))
1303 acb->selto_timer.function = selection_timeout_missed;
1304 acb->selto_timer.data = (unsigned long) acb;
1306 (jiffies + HZ, acb->last_reset + HZ / 2))
1307 acb->selto_timer.expires =
1308 acb->last_reset + HZ / 2 + 1;
1310 acb->selto_timer.expires = jiffies + HZ + 1;
1311 add_timer(&acb->selto_timer);
1315 void selection_timeout_missed(unsigned long ptr)
1317 unsigned long flags;
1318 struct AdapterCtlBlk *acb = (struct AdapterCtlBlk *)ptr;
1319 struct ScsiReqBlk *srb;
1320 dprintkl(KERN_DEBUG, "Chip forgot to produce SelTO IRQ!\n");
1321 if (!acb->active_dcb || !acb->active_dcb->active_srb) {
1322 dprintkl(KERN_DEBUG, "... but no cmd pending? Oops!\n");
1325 DC395x_LOCK_IO(acb->scsi_host, flags);
1326 srb = acb->active_dcb->active_srb;
1328 DC395x_UNLOCK_IO(acb->scsi_host, flags);
1333 static u8 start_scsi(struct AdapterCtlBlk* acb, struct DeviceCtlBlk* dcb,
1334 struct ScsiReqBlk* srb)
1336 u16 __maybe_unused s_stat2, return_code;
1337 u8 s_stat, scsicommand, i, identify_message;
1339 dprintkdbg(DBG_0, "start_scsi: (0x%p) <%02i-%i> srb=%p\n",
1340 dcb->target_id, dcb->target_lun, srb);
1342 srb->tag_number = TAG_NONE; /* acb->tag_max_num: had error read in eeprom */
1344 s_stat = DC395x_read8(acb, TRM_S1040_SCSI_SIGNAL);
1346 s_stat2 = DC395x_read16(acb, TRM_S1040_SCSI_STATUS);
1348 if (s_stat & 0x20 /* s_stat2 & 0x02000 */ ) {
1349 dprintkdbg(DBG_KG, "start_scsi: (0x%p) BUSY %02x %04x\n",
1354 * We could, BUT: Sometimes the TRM_S1040 misses to produce a Selection
1355 * Timeout, a Disconnect or a Reselection IRQ, so we would be screwed!
1356 * (This is likely to be a bug in the hardware. Obviously, most people
1357 * only have one initiator per SCSI bus.)
1358 * Instead let this fail and have the timer make sure the command is
1359 * tried again after a short time
1361 /*selto_timer (acb); */
1365 if (acb->active_dcb) {
1366 dprintkl(KERN_DEBUG, "start_scsi: (0x%p) Attempt to start a"
1367 "command while another command (0x%p) is active.",
1369 acb->active_dcb->active_srb ?
1370 acb->active_dcb->active_srb->cmd : 0);
1373 if (DC395x_read16(acb, TRM_S1040_SCSI_STATUS) & SCSIINTERRUPT) {
1374 dprintkdbg(DBG_KG, "start_scsi: (0x%p) Failed (busy)\n", srb->cmd);
1377 /* Allow starting of SCSI commands half a second before we allow the mid-level
1378 * to queue them again after a reset */
1379 if (time_before(jiffies, acb->last_reset - HZ / 2)) {
1380 dprintkdbg(DBG_KG, "start_scsi: Refuse cmds (reset wait)\n");
1385 clear_fifo(acb, "start_scsi");
1386 DC395x_write8(acb, TRM_S1040_SCSI_HOSTID, acb->scsi_host->this_id);
1387 DC395x_write8(acb, TRM_S1040_SCSI_TARGETID, dcb->target_id);
1388 DC395x_write8(acb, TRM_S1040_SCSI_SYNC, dcb->sync_period);
1389 DC395x_write8(acb, TRM_S1040_SCSI_OFFSET, dcb->sync_offset);
1390 srb->scsi_phase = PH_BUS_FREE; /* initial phase */
1392 identify_message = dcb->identify_msg;
1393 /*DC395x_TRM_write8(TRM_S1040_SCSI_IDMSG, identify_message); */
1394 /* Don't allow disconnection for AUTO_REQSENSE: Cont.All.Cond.! */
1395 if (srb->flag & AUTO_REQSENSE)
1396 identify_message &= 0xBF;
1398 if (((srb->cmd->cmnd[0] == INQUIRY)
1399 || (srb->cmd->cmnd[0] == REQUEST_SENSE)
1400 || (srb->flag & AUTO_REQSENSE))
1401 && (((dcb->sync_mode & WIDE_NEGO_ENABLE)
1402 && !(dcb->sync_mode & WIDE_NEGO_DONE))
1403 || ((dcb->sync_mode & SYNC_NEGO_ENABLE)
1404 && !(dcb->sync_mode & SYNC_NEGO_DONE)))
1405 && (dcb->target_lun == 0)) {
1406 srb->msgout_buf[0] = identify_message;
1408 scsicommand = SCMD_SEL_ATNSTOP;
1409 srb->state = SRB_MSGOUT;
1411 if (dcb->sync_mode & WIDE_NEGO_ENABLE
1412 && dcb->inquiry7 & SCSI_INQ_WBUS16) {
1413 build_wdtr(acb, dcb, srb);
1417 if (dcb->sync_mode & SYNC_NEGO_ENABLE
1418 && dcb->inquiry7 & SCSI_INQ_SYNC) {
1419 build_sdtr(acb, dcb, srb);
1422 if (dcb->sync_mode & WIDE_NEGO_ENABLE
1423 && dcb->inquiry7 & SCSI_INQ_WBUS16) {
1424 build_wdtr(acb, dcb, srb);
1429 /* Send identify message */
1430 DC395x_write8(acb, TRM_S1040_SCSI_FIFO, identify_message);
1432 scsicommand = SCMD_SEL_ATN;
1433 srb->state = SRB_START_;
1434 #ifndef DC395x_NO_TAGQ
1435 if ((dcb->sync_mode & EN_TAG_QUEUEING)
1436 && (identify_message & 0xC0)) {
1437 /* Send Tag message */
1440 while (tag_mask & dcb->tag_mask
1441 && tag_number < dcb->max_command) {
1442 tag_mask = tag_mask << 1;
1445 if (tag_number >= dcb->max_command) {
1446 dprintkl(KERN_WARNING, "start_scsi: (0x%p) "
1447 "Out of tags target=<%02i-%i>)\n",
1448 srb->cmd, srb->cmd->device->id,
1449 (u8)srb->cmd->device->lun);
1450 srb->state = SRB_READY;
1451 DC395x_write16(acb, TRM_S1040_SCSI_CONTROL,
1456 DC395x_write8(acb, TRM_S1040_SCSI_FIFO, SIMPLE_QUEUE_TAG);
1457 DC395x_write8(acb, TRM_S1040_SCSI_FIFO, tag_number);
1458 dcb->tag_mask |= tag_mask;
1459 srb->tag_number = tag_number;
1460 scsicommand = SCMD_SEL_ATN3;
1461 srb->state = SRB_START_;
1465 /* Send CDB ..command block ......... */
1466 dprintkdbg(DBG_KG, "start_scsi: (0x%p) <%02i-%i> cmnd=0x%02x tag=%i\n",
1467 srb->cmd, srb->cmd->device->id, (u8)srb->cmd->device->lun,
1468 srb->cmd->cmnd[0], srb->tag_number);
1469 if (srb->flag & AUTO_REQSENSE) {
1470 DC395x_write8(acb, TRM_S1040_SCSI_FIFO, REQUEST_SENSE);
1471 DC395x_write8(acb, TRM_S1040_SCSI_FIFO, (dcb->target_lun << 5));
1472 DC395x_write8(acb, TRM_S1040_SCSI_FIFO, 0);
1473 DC395x_write8(acb, TRM_S1040_SCSI_FIFO, 0);
1474 DC395x_write8(acb, TRM_S1040_SCSI_FIFO, SCSI_SENSE_BUFFERSIZE);
1475 DC395x_write8(acb, TRM_S1040_SCSI_FIFO, 0);
1477 ptr = (u8 *)srb->cmd->cmnd;
1478 for (i = 0; i < srb->cmd->cmd_len; i++)
1479 DC395x_write8(acb, TRM_S1040_SCSI_FIFO, *ptr++);
1482 DC395x_write16(acb, TRM_S1040_SCSI_CONTROL,
1483 DO_HWRESELECT | DO_DATALATCH);
1484 if (DC395x_read16(acb, TRM_S1040_SCSI_STATUS) & SCSIINTERRUPT) {
1486 * If start_scsi return 1:
1487 * we caught an interrupt (must be reset or reselection ... )
1488 * : Let's process it first!
1490 dprintkdbg(DBG_0, "start_scsi: (0x%p) <%02i-%i> Failed - busy\n",
1491 srb->cmd, dcb->target_id, dcb->target_lun);
1492 srb->state = SRB_READY;
1496 /* This IRQ should NOT get lost, as we did not acknowledge it */
1499 * If start_scsi returns 0:
1500 * we know that the SCSI processor is free
1502 srb->scsi_phase = PH_BUS_FREE; /* initial phase */
1503 dcb->active_srb = srb;
1504 acb->active_dcb = dcb;
1506 /* it's important for atn stop */
1507 DC395x_write16(acb, TRM_S1040_SCSI_CONTROL,
1508 DO_DATALATCH | DO_HWRESELECT);
1510 DC395x_write8(acb, TRM_S1040_SCSI_COMMAND, scsicommand);
1516 #define DC395x_ENABLE_MSGOUT \
1517 DC395x_write16 (acb, TRM_S1040_SCSI_CONTROL, DO_SETATN); \
1518 srb->state |= SRB_MSGOUT
1522 static inline void enable_msgout_abort(struct AdapterCtlBlk *acb,
1523 struct ScsiReqBlk *srb)
1525 srb->msgout_buf[0] = ABORT;
1527 DC395x_ENABLE_MSGOUT;
1528 srb->state &= ~SRB_MSGIN;
1529 srb->state |= SRB_MSGOUT;
1534 * dc395x_handle_interrupt - Handle an interrupt that has been confirmed to
1535 * have been triggered for this card.
1537 * @acb: a pointer to the adpter control block
1538 * @scsi_status: the status return when we checked the card
1540 static void dc395x_handle_interrupt(struct AdapterCtlBlk *acb,
1543 struct DeviceCtlBlk *dcb;
1544 struct ScsiReqBlk *srb;
1547 unsigned long flags;
1548 void (*dc395x_statev)(struct AdapterCtlBlk *, struct ScsiReqBlk *,
1551 DC395x_LOCK_IO(acb->scsi_host, flags);
1553 /* This acknowledges the IRQ */
1554 scsi_intstatus = DC395x_read8(acb, TRM_S1040_SCSI_INTSTATUS);
1555 if ((scsi_status & 0x2007) == 0x2002)
1556 dprintkl(KERN_DEBUG,
1557 "COP after COP completed? %04x\n", scsi_status);
1558 if (debug_enabled(DBG_KG)) {
1559 if (scsi_intstatus & INT_SELTIMEOUT)
1560 dprintkdbg(DBG_KG, "handle_interrupt: Selection timeout\n");
1562 /*dprintkl(KERN_DEBUG, "handle_interrupt: intstatus = 0x%02x ", scsi_intstatus); */
1564 if (timer_pending(&acb->selto_timer))
1565 del_timer(&acb->selto_timer);
1567 if (scsi_intstatus & (INT_SELTIMEOUT | INT_DISCONNECT)) {
1568 disconnect(acb); /* bus free interrupt */
1571 if (scsi_intstatus & INT_RESELECTED) {
1575 if (scsi_intstatus & INT_SELECT) {
1576 dprintkl(KERN_INFO, "Host does not support target mode!\n");
1579 if (scsi_intstatus & INT_SCSIRESET) {
1580 scsi_reset_detect(acb);
1583 if (scsi_intstatus & (INT_BUSSERVICE | INT_CMDDONE)) {
1584 dcb = acb->active_dcb;
1586 dprintkl(KERN_DEBUG,
1587 "Oops: BusService (%04x %02x) w/o ActiveDCB!\n",
1588 scsi_status, scsi_intstatus);
1591 srb = dcb->active_srb;
1592 if (dcb->flag & ABORT_DEV_) {
1593 dprintkdbg(DBG_0, "MsgOut Abort Device.....\n");
1594 enable_msgout_abort(acb, srb);
1597 /* software sequential machine */
1598 phase = (u16)srb->scsi_phase;
1602 * call dc395x_scsi_phase0[]... "phase entry"
1603 * handle every phase before start transfer
1605 /* data_out_phase0, phase:0 */
1606 /* data_in_phase0, phase:1 */
1607 /* command_phase0, phase:2 */
1608 /* status_phase0, phase:3 */
1609 /* nop0, phase:4 PH_BUS_FREE .. initial phase */
1610 /* nop0, phase:5 PH_BUS_FREE .. initial phase */
1611 /* msgout_phase0, phase:6 */
1612 /* msgin_phase0, phase:7 */
1613 dc395x_statev = dc395x_scsi_phase0[phase];
1614 dc395x_statev(acb, srb, &scsi_status);
1617 * if there were any exception occurred scsi_status
1618 * will be modify to bus free phase new scsi_status
1619 * transfer out from ... previous dc395x_statev
1621 srb->scsi_phase = scsi_status & PHASEMASK;
1622 phase = (u16)scsi_status & PHASEMASK;
1625 * call dc395x_scsi_phase1[]... "phase entry" handle
1626 * every phase to do transfer
1628 /* data_out_phase1, phase:0 */
1629 /* data_in_phase1, phase:1 */
1630 /* command_phase1, phase:2 */
1631 /* status_phase1, phase:3 */
1632 /* nop1, phase:4 PH_BUS_FREE .. initial phase */
1633 /* nop1, phase:5 PH_BUS_FREE .. initial phase */
1634 /* msgout_phase1, phase:6 */
1635 /* msgin_phase1, phase:7 */
1636 dc395x_statev = dc395x_scsi_phase1[phase];
1637 dc395x_statev(acb, srb, &scsi_status);
1640 DC395x_UNLOCK_IO(acb->scsi_host, flags);
1644 static irqreturn_t dc395x_interrupt(int irq, void *dev_id)
1646 struct AdapterCtlBlk *acb = dev_id;
1649 irqreturn_t handled = IRQ_NONE;
1652 * Check for pending interrupt
1654 scsi_status = DC395x_read16(acb, TRM_S1040_SCSI_STATUS);
1655 dma_status = DC395x_read8(acb, TRM_S1040_DMA_STATUS);
1656 if (scsi_status & SCSIINTERRUPT) {
1657 /* interrupt pending - let's process it! */
1658 dc395x_handle_interrupt(acb, scsi_status);
1659 handled = IRQ_HANDLED;
1661 else if (dma_status & 0x20) {
1662 /* Error from the DMA engine */
1663 dprintkl(KERN_INFO, "Interrupt from DMA engine: 0x%02x!\n", dma_status);
1665 dprintkl(KERN_INFO, "This means DMA error! Try to handle ...\n");
1666 if (acb->active_dcb) {
1667 acb->active_dcb-> flag |= ABORT_DEV_;
1668 if (acb->active_dcb->active_srb)
1669 enable_msgout_abort(acb, acb->active_dcb->active_srb);
1671 DC395x_write8(acb, TRM_S1040_DMA_CONTROL, ABORTXFER | CLRXFIFO);
1673 dprintkl(KERN_INFO, "Ignoring DMA error (probably a bad thing) ...\n");
1676 handled = IRQ_HANDLED;
1683 static void msgout_phase0(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb,
1686 dprintkdbg(DBG_0, "msgout_phase0: (0x%p)\n", srb->cmd);
1687 if (srb->state & (SRB_UNEXPECT_RESEL + SRB_ABORT_SENT))
1688 *pscsi_status = PH_BUS_FREE; /*.. initial phase */
1690 DC395x_write16(acb, TRM_S1040_SCSI_CONTROL, DO_DATALATCH); /* it's important for atn stop */
1691 srb->state &= ~SRB_MSGOUT;
1695 static void msgout_phase1(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb,
1700 dprintkdbg(DBG_0, "msgout_phase1: (0x%p)\n", srb->cmd);
1702 clear_fifo(acb, "msgout_phase1");
1703 if (!(srb->state & SRB_MSGOUT)) {
1704 srb->state |= SRB_MSGOUT;
1705 dprintkl(KERN_DEBUG,
1706 "msgout_phase1: (0x%p) Phase unexpected\n",
1707 srb->cmd); /* So what ? */
1709 if (!srb->msg_count) {
1710 dprintkdbg(DBG_0, "msgout_phase1: (0x%p) NOP msg\n",
1712 DC395x_write8(acb, TRM_S1040_SCSI_FIFO, NOP);
1713 DC395x_write16(acb, TRM_S1040_SCSI_CONTROL, DO_DATALATCH);
1714 /* it's important for atn stop */
1715 DC395x_write8(acb, TRM_S1040_SCSI_COMMAND, SCMD_FIFO_OUT);
1718 ptr = (u8 *)srb->msgout_buf;
1719 for (i = 0; i < srb->msg_count; i++)
1720 DC395x_write8(acb, TRM_S1040_SCSI_FIFO, *ptr++);
1722 if (srb->msgout_buf[0] == ABORT_TASK_SET)
1723 srb->state = SRB_ABORT_SENT;
1725 DC395x_write8(acb, TRM_S1040_SCSI_COMMAND, SCMD_FIFO_OUT);
1729 static void command_phase0(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb,
1732 dprintkdbg(DBG_0, "command_phase0: (0x%p)\n", srb->cmd);
1733 DC395x_write16(acb, TRM_S1040_SCSI_CONTROL, DO_DATALATCH);
1737 static void command_phase1(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb,
1740 struct DeviceCtlBlk *dcb;
1743 dprintkdbg(DBG_0, "command_phase1: (0x%p)\n", srb->cmd);
1745 clear_fifo(acb, "command_phase1");
1746 DC395x_write16(acb, TRM_S1040_SCSI_CONTROL, DO_CLRATN);
1747 if (!(srb->flag & AUTO_REQSENSE)) {
1748 ptr = (u8 *)srb->cmd->cmnd;
1749 for (i = 0; i < srb->cmd->cmd_len; i++) {
1750 DC395x_write8(acb, TRM_S1040_SCSI_FIFO, *ptr);
1754 DC395x_write8(acb, TRM_S1040_SCSI_FIFO, REQUEST_SENSE);
1755 dcb = acb->active_dcb;
1757 DC395x_write8(acb, TRM_S1040_SCSI_FIFO, (dcb->target_lun << 5));
1758 DC395x_write8(acb, TRM_S1040_SCSI_FIFO, 0);
1759 DC395x_write8(acb, TRM_S1040_SCSI_FIFO, 0);
1760 DC395x_write8(acb, TRM_S1040_SCSI_FIFO, SCSI_SENSE_BUFFERSIZE);
1761 DC395x_write8(acb, TRM_S1040_SCSI_FIFO, 0);
1763 srb->state |= SRB_COMMAND;
1764 /* it's important for atn stop */
1765 DC395x_write16(acb, TRM_S1040_SCSI_CONTROL, DO_DATALATCH);
1767 DC395x_write8(acb, TRM_S1040_SCSI_COMMAND, SCMD_FIFO_OUT);
1772 * Verify that the remaining space in the hw sg lists is the same as
1773 * the count of remaining bytes in srb->total_xfer_length
1775 static void sg_verify_length(struct ScsiReqBlk *srb)
1777 if (debug_enabled(DBG_SG)) {
1779 unsigned idx = srb->sg_index;
1780 struct SGentry *psge = srb->segment_x + idx;
1781 for (; idx < srb->sg_count; psge++, idx++)
1782 len += psge->length;
1783 if (len != srb->total_xfer_length)
1785 "Inconsistent SRB S/G lengths (Tot=%i, Count=%i) !!\n",
1786 srb->total_xfer_length, len);
1792 * Compute the next Scatter Gather list index and adjust its length
1793 * and address if necessary
1795 static void sg_update_list(struct ScsiReqBlk *srb, u32 left)
1798 u32 xferred = srb->total_xfer_length - left; /* bytes transferred */
1799 struct SGentry *psge = srb->segment_x + srb->sg_index;
1802 "sg_update_list: Transferred %i of %i bytes, %i remain\n",
1803 xferred, srb->total_xfer_length, left);
1805 /* nothing to update since we did not transfer any data */
1809 sg_verify_length(srb);
1810 srb->total_xfer_length = left; /* update remaining count */
1811 for (idx = srb->sg_index; idx < srb->sg_count; idx++) {
1812 if (xferred >= psge->length) {
1813 /* Complete SG entries done */
1814 xferred -= psge->length;
1816 /* Partial SG entry done */
1817 dma_sync_single_for_cpu(&srb->dcb->acb->dev->dev,
1818 srb->sg_bus_addr, SEGMENTX_LEN,
1820 psge->length -= xferred;
1821 psge->address += xferred;
1822 srb->sg_index = idx;
1823 dma_sync_single_for_device(&srb->dcb->acb->dev->dev,
1824 srb->sg_bus_addr, SEGMENTX_LEN,
1830 sg_verify_length(srb);
1835 * We have transferred a single byte (PIO mode?) and need to update
1836 * the count of bytes remaining (total_xfer_length) and update the sg
1837 * entry to either point to next byte in the current sg entry, or of
1838 * already at the end to point to the start of the next sg entry
1840 static void sg_subtract_one(struct ScsiReqBlk *srb)
1842 sg_update_list(srb, srb->total_xfer_length - 1);
1847 * cleanup_after_transfer
1849 * Makes sure, DMA and SCSI engine are empty, after the transfer has finished
1850 * KG: Currently called from StatusPhase1 ()
1851 * Should probably also be called from other places
1852 * Best might be to call it in DataXXPhase0, if new phase will differ
1854 static void cleanup_after_transfer(struct AdapterCtlBlk *acb,
1855 struct ScsiReqBlk *srb)
1857 /*DC395x_write8 (TRM_S1040_DMA_STATUS, FORCEDMACOMP); */
1858 if (DC395x_read16(acb, TRM_S1040_DMA_COMMAND) & 0x0001) { /* read */
1859 if (!(DC395x_read8(acb, TRM_S1040_SCSI_FIFOCNT) & 0x40))
1860 clear_fifo(acb, "cleanup/in");
1861 if (!(DC395x_read8(acb, TRM_S1040_DMA_FIFOSTAT) & 0x80))
1862 DC395x_write8(acb, TRM_S1040_DMA_CONTROL, CLRXFIFO);
1863 } else { /* write */
1864 if (!(DC395x_read8(acb, TRM_S1040_DMA_FIFOSTAT) & 0x80))
1865 DC395x_write8(acb, TRM_S1040_DMA_CONTROL, CLRXFIFO);
1866 if (!(DC395x_read8(acb, TRM_S1040_SCSI_FIFOCNT) & 0x40))
1867 clear_fifo(acb, "cleanup/out");
1869 DC395x_write16(acb, TRM_S1040_SCSI_CONTROL, DO_DATALATCH);
1874 * Those no of bytes will be transferred w/ PIO through the SCSI FIFO
1875 * Seems to be needed for unknown reasons; could be a hardware bug :-(
1877 #define DC395x_LASTPIO 4
1880 static void data_out_phase0(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb,
1883 struct DeviceCtlBlk *dcb = srb->dcb;
1884 u16 scsi_status = *pscsi_status;
1885 u32 d_left_counter = 0;
1886 dprintkdbg(DBG_0, "data_out_phase0: (0x%p) <%02i-%i>\n",
1887 srb->cmd, srb->cmd->device->id, (u8)srb->cmd->device->lun);
1890 * KG: We need to drain the buffers before we draw any conclusions!
1891 * This means telling the DMA to push the rest into SCSI, telling
1892 * SCSI to push the rest to the bus.
1893 * However, the device might have been the one to stop us (phase
1894 * change), and the data in transit just needs to be accounted so
1895 * it can be retransmitted.)
1898 * KG: Stop DMA engine pushing more data into the SCSI FIFO
1899 * If we need more data, the DMA SG list will be freshly set up, anyway
1901 dprintkdbg(DBG_PIO, "data_out_phase0: "
1902 "DMA{fifocnt=0x%02x fifostat=0x%02x} "
1903 "SCSI{fifocnt=0x%02x cnt=0x%06x status=0x%04x} total=0x%06x\n",
1904 DC395x_read8(acb, TRM_S1040_DMA_FIFOCNT),
1905 DC395x_read8(acb, TRM_S1040_DMA_FIFOSTAT),
1906 DC395x_read8(acb, TRM_S1040_SCSI_FIFOCNT),
1907 DC395x_read32(acb, TRM_S1040_SCSI_COUNTER), scsi_status,
1908 srb->total_xfer_length);
1909 DC395x_write8(acb, TRM_S1040_DMA_CONTROL, STOPDMAXFER | CLRXFIFO);
1911 if (!(srb->state & SRB_XFERPAD)) {
1912 if (scsi_status & PARITYERROR)
1913 srb->status |= PARITY_ERROR;
1916 * KG: Right, we can't just rely on the SCSI_COUNTER, because this
1917 * is the no of bytes it got from the DMA engine not the no it
1918 * transferred successfully to the device. (And the difference could
1919 * be as much as the FIFO size, I guess ...)
1921 if (!(scsi_status & SCSIXFERDONE)) {
1923 * when data transfer from DMA FIFO to SCSI FIFO
1924 * if there was some data left in SCSI FIFO
1927 (u32)(DC395x_read8(acb, TRM_S1040_SCSI_FIFOCNT) &
1929 if (dcb->sync_period & WIDE_SYNC)
1930 d_left_counter <<= 1;
1932 dprintkdbg(DBG_KG, "data_out_phase0: FIFO contains %i %s\n"
1933 "SCSI{fifocnt=0x%02x cnt=0x%08x} "
1934 "DMA{fifocnt=0x%04x cnt=0x%02x ctr=0x%08x}\n",
1935 DC395x_read8(acb, TRM_S1040_SCSI_FIFOCNT),
1936 (dcb->sync_period & WIDE_SYNC) ? "words" : "bytes",
1937 DC395x_read8(acb, TRM_S1040_SCSI_FIFOCNT),
1938 DC395x_read32(acb, TRM_S1040_SCSI_COUNTER),
1939 DC395x_read8(acb, TRM_S1040_DMA_FIFOCNT),
1940 DC395x_read8(acb, TRM_S1040_DMA_FIFOSTAT),
1941 DC395x_read32(acb, TRM_S1040_DMA_CXCNT));
1944 * calculate all the residue data that not yet tranfered
1945 * SCSI transfer counter + left in SCSI FIFO data
1947 * .....TRM_S1040_SCSI_COUNTER (24bits)
1948 * The counter always decrement by one for every SCSI byte transfer.
1949 * .....TRM_S1040_SCSI_FIFOCNT ( 5bits)
1950 * The counter is SCSI FIFO offset counter (in units of bytes or! words)
1952 if (srb->total_xfer_length > DC395x_LASTPIO)
1954 DC395x_read32(acb, TRM_S1040_SCSI_COUNTER);
1956 /* Is this a good idea? */
1957 /*clear_fifo(acb, "DOP1"); */
1958 /* KG: What is this supposed to be useful for? WIDE padding stuff? */
1959 if (d_left_counter == 1 && dcb->sync_period & WIDE_SYNC
1960 && scsi_bufflen(srb->cmd) % 2) {
1963 "data_out_phase0: Discard 1 byte (0x%02x)\n",
1967 * KG: Oops again. Same thinko as above: The SCSI might have been
1968 * faster than the DMA engine, so that it ran out of data.
1969 * In that case, we have to do just nothing!
1970 * But: Why the interrupt: No phase change. No XFERCNT_2_ZERO. Or?
1973 * KG: This is nonsense: We have been WRITING data to the bus
1974 * If the SCSI engine has no bytes left, how should the DMA engine?
1976 if (d_left_counter == 0) {
1977 srb->total_xfer_length = 0;
1980 * if transfer not yet complete
1981 * there were some data residue in SCSI FIFO or
1982 * SCSI transfer counter not empty
1985 srb->total_xfer_length - d_left_counter;
1987 (dcb->sync_period & WIDE_SYNC) ? 2 : 1;
1988 sg_update_list(srb, d_left_counter);
1989 /* KG: Most ugly hack! Apparently, this works around a chip bug */
1990 if ((srb->segment_x[srb->sg_index].length ==
1991 diff && scsi_sg_count(srb->cmd))
1992 || ((oldxferred & ~PAGE_MASK) ==
1995 dprintkl(KERN_INFO, "data_out_phase0: "
1996 "Work around chip bug (%i)?\n", diff);
1998 srb->total_xfer_length - diff;
1999 sg_update_list(srb, d_left_counter);
2000 /*srb->total_xfer_length -= diff; */
2001 /*srb->virt_addr += diff; */
2002 /*if (srb->cmd->use_sg) */
2003 /* srb->sg_index++; */
2007 if ((*pscsi_status & PHASEMASK) != PH_DATA_OUT) {
2008 cleanup_after_transfer(acb, srb);
2013 static void data_out_phase1(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb,
2016 dprintkdbg(DBG_0, "data_out_phase1: (0x%p) <%02i-%i>\n",
2017 srb->cmd, srb->cmd->device->id, (u8)srb->cmd->device->lun);
2018 clear_fifo(acb, "data_out_phase1");
2019 /* do prepare before transfer when data out phase */
2020 data_io_transfer(acb, srb, XFERDATAOUT);
2023 static void data_in_phase0(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb,
2026 u16 scsi_status = *pscsi_status;
2028 dprintkdbg(DBG_0, "data_in_phase0: (0x%p) <%02i-%i>\n",
2029 srb->cmd, srb->cmd->device->id, (u8)srb->cmd->device->lun);
2032 * KG: DataIn is much more tricky than DataOut. When the device is finished
2033 * and switches to another phase, the SCSI engine should be finished too.
2034 * But: There might still be bytes left in its FIFO to be fetched by the DMA
2035 * engine and transferred to memory.
2036 * We should wait for the FIFOs to be emptied by that (is there any way to
2037 * enforce this?) and then stop the DMA engine, because it might think, that
2038 * there are more bytes to follow. Yes, the device might disconnect prior to
2039 * having all bytes transferred!
2040 * Also we should make sure that all data from the DMA engine buffer's really
2041 * made its way to the system memory! Some documentation on this would not
2042 * seem to be a bad idea, actually.
2044 if (!(srb->state & SRB_XFERPAD)) {
2046 unsigned int sc, fc;
2048 if (scsi_status & PARITYERROR) {
2049 dprintkl(KERN_INFO, "data_in_phase0: (0x%p) "
2050 "Parity Error\n", srb->cmd);
2051 srb->status |= PARITY_ERROR;
2054 * KG: We should wait for the DMA FIFO to be empty ...
2055 * but: it would be better to wait first for the SCSI FIFO and then the
2056 * the DMA FIFO to become empty? How do we know, that the device not already
2057 * sent data to the FIFO in a MsgIn phase, eg.?
2059 if (!(DC395x_read8(acb, TRM_S1040_DMA_FIFOSTAT) & 0x80)) {
2062 dprintkl(KERN_DEBUG,
2063 "DIP0: Wait for DMA FIFO to flush ...\n");
2064 /*DC395x_write8 (TRM_S1040_DMA_CONTROL, STOPDMAXFER); */
2065 /*DC395x_write32 (TRM_S1040_SCSI_COUNTER, 7); */
2066 /*DC395x_write8 (TRM_S1040_SCSI_COMMAND, SCMD_DMA_IN); */
2068 (DC395x_read16(acb, TRM_S1040_DMA_FIFOSTAT) &
2070 if (ctr < 6000000 - 1)
2072 "DIP0: Had to wait for DMA ...\n");
2075 "Deadlock in DIP0 waiting for DMA FIFO empty!!\n");
2076 /*DC395x_write32 (TRM_S1040_SCSI_COUNTER, 0); */
2078 dprintkdbg(DBG_KG, "data_in_phase0: "
2079 "DMA{fifocnt=0x%02x fifostat=0x%02x}\n",
2080 DC395x_read8(acb, TRM_S1040_DMA_FIFOCNT),
2081 DC395x_read8(acb, TRM_S1040_DMA_FIFOSTAT));
2083 /* Now: Check remainig data: The SCSI counters should tell us ... */
2084 sc = DC395x_read32(acb, TRM_S1040_SCSI_COUNTER);
2085 fc = DC395x_read8(acb, TRM_S1040_SCSI_FIFOCNT);
2086 d_left_counter = sc + ((fc & 0x1f)
2087 << ((srb->dcb->sync_period & WIDE_SYNC) ? 1 :
2089 dprintkdbg(DBG_KG, "data_in_phase0: "
2090 "SCSI{fifocnt=0x%02x%s ctr=0x%08x} "
2091 "DMA{fifocnt=0x%02x fifostat=0x%02x ctr=0x%08x} "
2092 "Remain{totxfer=%i scsi_fifo+ctr=%i}\n",
2094 (srb->dcb->sync_period & WIDE_SYNC) ? "words" : "bytes",
2097 DC395x_read8(acb, TRM_S1040_DMA_FIFOSTAT),
2098 DC395x_read32(acb, TRM_S1040_DMA_CXCNT),
2099 srb->total_xfer_length, d_left_counter);
2101 /* KG: Less than or equal to 4 bytes can not be transferred via DMA, it seems. */
2103 && srb->total_xfer_length <= DC395x_LASTPIO) {
2104 size_t left_io = srb->total_xfer_length;
2106 /*u32 addr = (srb->segment_x[srb->sg_index].address); */
2107 /*sg_update_list (srb, d_left_counter); */
2108 dprintkdbg(DBG_PIO, "data_in_phase0: PIO (%i %s) "
2109 "for remaining %i bytes:",
2111 (srb->dcb->sync_period & WIDE_SYNC) ?
2113 srb->total_xfer_length);
2114 if (srb->dcb->sync_period & WIDE_SYNC)
2115 DC395x_write8(acb, TRM_S1040_SCSI_CONFIG2,
2118 unsigned char *virt, *base = NULL;
2119 unsigned long flags = 0;
2120 size_t len = left_io;
2121 size_t offset = srb->request_length - left_io;
2123 local_irq_save(flags);
2124 /* Assumption: it's inside one page as it's at most 4 bytes and
2125 I just assume it's on a 4-byte boundary */
2126 base = scsi_kmap_atomic_sg(scsi_sglist(srb->cmd),
2127 srb->sg_count, &offset, &len);
2128 virt = base + offset;
2134 byte = DC395x_read8(acb, TRM_S1040_SCSI_FIFO);
2137 if (debug_enabled(DBG_PIO))
2138 printk(" %02x", byte);
2141 sg_subtract_one(srb);
2145 fc = DC395x_read8(acb, TRM_S1040_SCSI_FIFOCNT);
2153 WARN_ON((fc != 0x40) == !d_left_counter);
2155 if (fc == 0x40 && (srb->dcb->sync_period & WIDE_SYNC)) {
2156 /* Read the last byte ... */
2157 if (srb->total_xfer_length > 0) {
2158 u8 byte = DC395x_read8(acb, TRM_S1040_SCSI_FIFO);
2161 srb->total_xfer_length--;
2162 if (debug_enabled(DBG_PIO))
2163 printk(" %02x", byte);
2166 DC395x_write8(acb, TRM_S1040_SCSI_CONFIG2, 0);
2169 scsi_kunmap_atomic_sg(base);
2170 local_irq_restore(flags);
2172 /*printk(" %08x", *(u32*)(bus_to_virt (addr))); */
2173 /*srb->total_xfer_length = 0; */
2174 if (debug_enabled(DBG_PIO))
2177 #endif /* DC395x_LASTPIO */
2181 * KG: This was in DATAOUT. Does it also belong here?
2182 * Nobody seems to know what counter and fifo_cnt count exactly ...
2184 if (!(scsi_status & SCSIXFERDONE)) {
2186 * when data transfer from DMA FIFO to SCSI FIFO
2187 * if there was some data left in SCSI FIFO
2190 (u32)(DC395x_read8(acb, TRM_S1040_SCSI_FIFOCNT) &
2192 if (srb->dcb->sync_period & WIDE_SYNC)
2193 d_left_counter <<= 1;
2195 * if WIDE scsi SCSI FIFOCNT unit is word !!!
2197 * KG: Seems to be correct ...
2201 /* KG: This should not be needed any more! */
2202 if (d_left_counter == 0
2203 || (scsi_status & SCSIXFERCNT_2_ZERO)) {
2209 DC395x_read8(acb, TRM_S1040_DMA_STATUS);
2210 } while (!(TempDMAstatus & DMAXFERCOMP) && --ctr);
2213 "Deadlock in DataInPhase0 waiting for DMA!!\n");
2214 srb->total_xfer_length = 0;
2216 srb->total_xfer_length = d_left_counter;
2217 } else { /* phase changed */
2220 * when a transfer not yet complete
2221 * but be disconnected by target
2222 * if transfer not yet complete
2223 * there were some data residue in SCSI FIFO or
2224 * SCSI transfer counter not empty
2226 sg_update_list(srb, d_left_counter);
2229 /* KG: The target may decide to disconnect: Empty FIFO before! */
2230 if ((*pscsi_status & PHASEMASK) != PH_DATA_IN) {
2231 cleanup_after_transfer(acb, srb);
2236 static void data_in_phase1(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb,
2239 dprintkdbg(DBG_0, "data_in_phase1: (0x%p) <%02i-%i>\n",
2240 srb->cmd, srb->cmd->device->id, (u8)srb->cmd->device->lun);
2241 data_io_transfer(acb, srb, XFERDATAIN);
2245 static void data_io_transfer(struct AdapterCtlBlk *acb,
2246 struct ScsiReqBlk *srb, u16 io_dir)
2248 struct DeviceCtlBlk *dcb = srb->dcb;
2251 "data_io_transfer: (0x%p) <%02i-%i> %c len=%i, sg=(%i/%i)\n",
2252 srb->cmd, srb->cmd->device->id, (u8)srb->cmd->device->lun,
2253 ((io_dir & DMACMD_DIR) ? 'r' : 'w'),
2254 srb->total_xfer_length, srb->sg_index, srb->sg_count);
2255 if (srb == acb->tmp_srb)
2256 dprintkl(KERN_ERR, "data_io_transfer: Using tmp_srb!\n");
2257 if (srb->sg_index >= srb->sg_count) {
2258 /* can't happen? out of bounds error */
2262 if (srb->total_xfer_length > DC395x_LASTPIO) {
2263 u8 dma_status = DC395x_read8(acb, TRM_S1040_DMA_STATUS);
2265 * KG: What should we do: Use SCSI Cmd 0x90/0x92?
2266 * Maybe, even ABORTXFER would be appropriate
2268 if (dma_status & XFERPENDING) {
2269 dprintkl(KERN_DEBUG, "data_io_transfer: Xfer pending! "
2270 "Expect trouble!\n");
2271 dump_register_info(acb, dcb, srb);
2272 DC395x_write8(acb, TRM_S1040_DMA_CONTROL, CLRXFIFO);
2274 /* clear_fifo(acb, "IO"); */
2276 * load what physical address of Scatter/Gather list table
2277 * want to be transfer
2279 srb->state |= SRB_DATA_XFER;
2280 DC395x_write32(acb, TRM_S1040_DMA_XHIGHADDR, 0);
2281 if (scsi_sg_count(srb->cmd)) { /* with S/G */
2282 io_dir |= DMACMD_SG;
2283 DC395x_write32(acb, TRM_S1040_DMA_XLOWADDR,
2285 sizeof(struct SGentry) *
2287 /* load how many bytes in the sg list table */
2288 DC395x_write32(acb, TRM_S1040_DMA_XCNT,
2289 ((u32)(srb->sg_count -
2290 srb->sg_index) << 3));
2291 } else { /* without S/G */
2292 io_dir &= ~DMACMD_SG;
2293 DC395x_write32(acb, TRM_S1040_DMA_XLOWADDR,
2294 srb->segment_x[0].address);
2295 DC395x_write32(acb, TRM_S1040_DMA_XCNT,
2296 srb->segment_x[0].length);
2298 /* load total transfer length (24bits) max value 16Mbyte */
2299 DC395x_write32(acb, TRM_S1040_SCSI_COUNTER,
2300 srb->total_xfer_length);
2301 DC395x_write16(acb, TRM_S1040_SCSI_CONTROL, DO_DATALATCH); /* it's important for atn stop */
2302 if (io_dir & DMACMD_DIR) { /* read */
2303 DC395x_write8(acb, TRM_S1040_SCSI_COMMAND,
2305 DC395x_write16(acb, TRM_S1040_DMA_COMMAND, io_dir);
2307 DC395x_write16(acb, TRM_S1040_DMA_COMMAND, io_dir);
2308 DC395x_write8(acb, TRM_S1040_SCSI_COMMAND,
2314 else if (srb->total_xfer_length > 0) { /* The last four bytes: Do PIO */
2316 * load what physical address of Scatter/Gather list table
2317 * want to be transfer
2319 srb->state |= SRB_DATA_XFER;
2320 /* load total transfer length (24bits) max value 16Mbyte */
2321 DC395x_write32(acb, TRM_S1040_SCSI_COUNTER,
2322 srb->total_xfer_length);
2323 DC395x_write16(acb, TRM_S1040_SCSI_CONTROL, DO_DATALATCH); /* it's important for atn stop */
2324 if (io_dir & DMACMD_DIR) { /* read */
2325 DC395x_write8(acb, TRM_S1040_SCSI_COMMAND,
2327 } else { /* write */
2328 int ln = srb->total_xfer_length;
2329 size_t left_io = srb->total_xfer_length;
2331 if (srb->dcb->sync_period & WIDE_SYNC)
2332 DC395x_write8(acb, TRM_S1040_SCSI_CONFIG2,
2336 unsigned char *virt, *base = NULL;
2337 unsigned long flags = 0;
2338 size_t len = left_io;
2339 size_t offset = srb->request_length - left_io;
2341 local_irq_save(flags);
2342 /* Again, max 4 bytes */
2343 base = scsi_kmap_atomic_sg(scsi_sglist(srb->cmd),
2344 srb->sg_count, &offset, &len);
2345 virt = base + offset;
2350 if (debug_enabled(DBG_PIO))
2351 printk(" %02x", *virt);
2353 DC395x_write8(acb, TRM_S1040_SCSI_FIFO, *virt++);
2355 sg_subtract_one(srb);
2358 scsi_kunmap_atomic_sg(base);
2359 local_irq_restore(flags);
2361 if (srb->dcb->sync_period & WIDE_SYNC) {
2363 DC395x_write8(acb, TRM_S1040_SCSI_FIFO, 0);
2364 if (debug_enabled(DBG_PIO))
2367 DC395x_write8(acb, TRM_S1040_SCSI_CONFIG2, 0);
2369 /*DC395x_write32(acb, TRM_S1040_SCSI_COUNTER, ln); */
2370 if (debug_enabled(DBG_PIO))
2372 DC395x_write8(acb, TRM_S1040_SCSI_COMMAND,
2376 #endif /* DC395x_LASTPIO */
2377 else { /* xfer pad */
2378 if (srb->sg_count) {
2379 srb->adapter_status = H_OVER_UNDER_RUN;
2380 srb->status |= OVER_RUN;
2383 * KG: despite the fact that we are using 16 bits I/O ops
2384 * the SCSI FIFO is only 8 bits according to the docs
2385 * (we can set bit 1 in 0x8f to serialize FIFO access ...)
2387 if (dcb->sync_period & WIDE_SYNC) {
2388 DC395x_write32(acb, TRM_S1040_SCSI_COUNTER, 2);
2389 DC395x_write8(acb, TRM_S1040_SCSI_CONFIG2,
2391 if (io_dir & DMACMD_DIR) {
2392 DC395x_read8(acb, TRM_S1040_SCSI_FIFO);
2393 DC395x_read8(acb, TRM_S1040_SCSI_FIFO);
2395 /* Danger, Robinson: If you find KGs
2396 * scattered over the wide disk, the driver
2397 * or chip is to blame :-( */
2398 DC395x_write8(acb, TRM_S1040_SCSI_FIFO, 'K');
2399 DC395x_write8(acb, TRM_S1040_SCSI_FIFO, 'G');
2401 DC395x_write8(acb, TRM_S1040_SCSI_CONFIG2, 0);
2403 DC395x_write32(acb, TRM_S1040_SCSI_COUNTER, 1);
2404 /* Danger, Robinson: If you find a collection of Ks on your disk
2405 * something broke :-( */
2406 if (io_dir & DMACMD_DIR)
2407 DC395x_read8(acb, TRM_S1040_SCSI_FIFO);
2409 DC395x_write8(acb, TRM_S1040_SCSI_FIFO, 'K');
2411 srb->state |= SRB_XFERPAD;
2412 DC395x_write16(acb, TRM_S1040_SCSI_CONTROL, DO_DATALATCH); /* it's important for atn stop */
2414 bval = (io_dir & DMACMD_DIR) ? SCMD_FIFO_IN : SCMD_FIFO_OUT;
2415 DC395x_write8(acb, TRM_S1040_SCSI_COMMAND, bval);
2420 static void status_phase0(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb,
2423 dprintkdbg(DBG_0, "status_phase0: (0x%p) <%02i-%i>\n",
2424 srb->cmd, srb->cmd->device->id, (u8)srb->cmd->device->lun);
2425 srb->target_status = DC395x_read8(acb, TRM_S1040_SCSI_FIFO);
2426 srb->end_message = DC395x_read8(acb, TRM_S1040_SCSI_FIFO); /* get message */
2427 srb->state = SRB_COMPLETED;
2428 *pscsi_status = PH_BUS_FREE; /*.. initial phase */
2429 DC395x_write16(acb, TRM_S1040_SCSI_CONTROL, DO_DATALATCH); /* it's important for atn stop */
2430 DC395x_write8(acb, TRM_S1040_SCSI_COMMAND, SCMD_MSGACCEPT);
2434 static void status_phase1(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb,
2437 dprintkdbg(DBG_0, "status_phase1: (0x%p) <%02i-%i>\n",
2438 srb->cmd, srb->cmd->device->id, (u8)srb->cmd->device->lun);
2439 srb->state = SRB_STATUS;
2440 DC395x_write16(acb, TRM_S1040_SCSI_CONTROL, DO_DATALATCH); /* it's important for atn stop */
2441 DC395x_write8(acb, TRM_S1040_SCSI_COMMAND, SCMD_COMP);
2445 /* Check if the message is complete */
2446 static inline u8 msgin_completed(u8 * msgbuf, u32 len)
2448 if (*msgbuf == EXTENDED_MESSAGE) {
2451 if (len < msgbuf[1] + 2)
2453 } else if (*msgbuf >= 0x20 && *msgbuf <= 0x2f) /* two byte messages */
2460 static inline void msgin_reject(struct AdapterCtlBlk *acb,
2461 struct ScsiReqBlk *srb)
2463 srb->msgout_buf[0] = MESSAGE_REJECT;
2465 DC395x_ENABLE_MSGOUT;
2466 srb->state &= ~SRB_MSGIN;
2467 srb->state |= SRB_MSGOUT;
2468 dprintkl(KERN_INFO, "msgin_reject: 0x%02x <%02i-%i>\n",
2470 srb->dcb->target_id, srb->dcb->target_lun);
2474 static struct ScsiReqBlk *msgin_qtag(struct AdapterCtlBlk *acb,
2475 struct DeviceCtlBlk *dcb, u8 tag)
2477 struct ScsiReqBlk *srb = NULL;
2478 struct ScsiReqBlk *i;
2479 dprintkdbg(DBG_0, "msgin_qtag: (0x%p) tag=%i srb=%p\n",
2480 srb->cmd, tag, srb);
2482 if (!(dcb->tag_mask & (1 << tag)))
2483 dprintkl(KERN_DEBUG,
2484 "msgin_qtag: tag_mask=0x%08x does not reserve tag %i!\n",
2485 dcb->tag_mask, tag);
2487 if (list_empty(&dcb->srb_going_list))
2489 list_for_each_entry(i, &dcb->srb_going_list, list) {
2490 if (i->tag_number == tag) {
2498 dprintkdbg(DBG_0, "msgin_qtag: (0x%p) <%02i-%i>\n",
2499 srb->cmd, srb->dcb->target_id, srb->dcb->target_lun);
2500 if (dcb->flag & ABORT_DEV_) {
2501 /*srb->state = SRB_ABORT_SENT; */
2502 enable_msgout_abort(acb, srb);
2505 if (!(srb->state & SRB_DISCONNECT))
2508 memcpy(srb->msgin_buf, dcb->active_srb->msgin_buf, acb->msg_len);
2509 srb->state |= dcb->active_srb->state;
2510 srb->state |= SRB_DATA_XFER;
2511 dcb->active_srb = srb;
2512 /* How can we make the DORS happy? */
2517 srb->state = SRB_UNEXPECT_RESEL;
2518 dcb->active_srb = srb;
2519 srb->msgout_buf[0] = ABORT_TASK;
2521 DC395x_ENABLE_MSGOUT;
2522 dprintkl(KERN_DEBUG, "msgin_qtag: Unknown tag %i - abort\n", tag);
2527 static inline void reprogram_regs(struct AdapterCtlBlk *acb,
2528 struct DeviceCtlBlk *dcb)
2530 DC395x_write8(acb, TRM_S1040_SCSI_TARGETID, dcb->target_id);
2531 DC395x_write8(acb, TRM_S1040_SCSI_SYNC, dcb->sync_period);
2532 DC395x_write8(acb, TRM_S1040_SCSI_OFFSET, dcb->sync_offset);
2533 set_xfer_rate(acb, dcb);
2537 /* set async transfer mode */
2538 static void msgin_set_async(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb)
2540 struct DeviceCtlBlk *dcb = srb->dcb;
2541 dprintkl(KERN_DEBUG, "msgin_set_async: No sync transfers <%02i-%i>\n",
2542 dcb->target_id, dcb->target_lun);
2544 dcb->sync_mode &= ~(SYNC_NEGO_ENABLE);
2545 dcb->sync_mode |= SYNC_NEGO_DONE;
2546 /*dcb->sync_period &= 0; */
2547 dcb->sync_offset = 0;
2548 dcb->min_nego_period = 200 >> 2; /* 200ns <=> 5 MHz */
2549 srb->state &= ~SRB_DO_SYNC_NEGO;
2550 reprogram_regs(acb, dcb);
2551 if ((dcb->sync_mode & WIDE_NEGO_ENABLE)
2552 && !(dcb->sync_mode & WIDE_NEGO_DONE)) {
2553 build_wdtr(acb, dcb, srb);
2554 DC395x_ENABLE_MSGOUT;
2555 dprintkdbg(DBG_0, "msgin_set_async(rej): Try WDTR anyway\n");
2560 /* set sync transfer mode */
2561 static void msgin_set_sync(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb)
2563 struct DeviceCtlBlk *dcb = srb->dcb;
2566 dprintkdbg(DBG_1, "msgin_set_sync: <%02i> Sync: %ins "
2567 "(%02i.%01i MHz) Offset %i\n",
2568 dcb->target_id, srb->msgin_buf[3] << 2,
2569 (250 / srb->msgin_buf[3]),
2570 ((250 % srb->msgin_buf[3]) * 10) / srb->msgin_buf[3],
2573 if (srb->msgin_buf[4] > 15)
2574 srb->msgin_buf[4] = 15;
2575 if (!(dcb->dev_mode & NTC_DO_SYNC_NEGO))
2576 dcb->sync_offset = 0;
2577 else if (dcb->sync_offset == 0)
2578 dcb->sync_offset = srb->msgin_buf[4];
2579 if (srb->msgin_buf[4] > dcb->sync_offset)
2580 srb->msgin_buf[4] = dcb->sync_offset;
2582 dcb->sync_offset = srb->msgin_buf[4];
2584 while (bval < 7 && (srb->msgin_buf[3] > clock_period[bval]
2585 || dcb->min_nego_period >
2586 clock_period[bval]))
2588 if (srb->msgin_buf[3] < clock_period[bval])
2590 "msgin_set_sync: Increase sync nego period to %ins\n",
2591 clock_period[bval] << 2);
2592 srb->msgin_buf[3] = clock_period[bval];
2593 dcb->sync_period &= 0xf0;
2594 dcb->sync_period |= ALT_SYNC | bval;
2595 dcb->min_nego_period = srb->msgin_buf[3];
2597 if (dcb->sync_period & WIDE_SYNC)
2603 "Target %02i: %s Sync: %ins Offset %i (%02i.%01i MB/s)\n",
2604 dcb->target_id, (fact == 500) ? "Wide16" : "",
2605 dcb->min_nego_period << 2, dcb->sync_offset,
2606 (fact / dcb->min_nego_period),
2607 ((fact % dcb->min_nego_period) * 10 +
2608 dcb->min_nego_period / 2) / dcb->min_nego_period);
2610 if (!(srb->state & SRB_DO_SYNC_NEGO)) {
2611 /* Reply with corrected SDTR Message */
2612 dprintkl(KERN_DEBUG, "msgin_set_sync: answer w/%ins %i\n",
2613 srb->msgin_buf[3] << 2, srb->msgin_buf[4]);
2615 memcpy(srb->msgout_buf, srb->msgin_buf, 5);
2617 DC395x_ENABLE_MSGOUT;
2618 dcb->sync_mode |= SYNC_NEGO_DONE;
2620 if ((dcb->sync_mode & WIDE_NEGO_ENABLE)
2621 && !(dcb->sync_mode & WIDE_NEGO_DONE)) {
2622 build_wdtr(acb, dcb, srb);
2623 DC395x_ENABLE_MSGOUT;
2624 dprintkdbg(DBG_0, "msgin_set_sync: Also try WDTR\n");
2627 srb->state &= ~SRB_DO_SYNC_NEGO;
2628 dcb->sync_mode |= SYNC_NEGO_DONE | SYNC_NEGO_ENABLE;
2630 reprogram_regs(acb, dcb);
2634 static inline void msgin_set_nowide(struct AdapterCtlBlk *acb,
2635 struct ScsiReqBlk *srb)
2637 struct DeviceCtlBlk *dcb = srb->dcb;
2638 dprintkdbg(DBG_1, "msgin_set_nowide: <%02i>\n", dcb->target_id);
2640 dcb->sync_period &= ~WIDE_SYNC;
2641 dcb->sync_mode &= ~(WIDE_NEGO_ENABLE);
2642 dcb->sync_mode |= WIDE_NEGO_DONE;
2643 srb->state &= ~SRB_DO_WIDE_NEGO;
2644 reprogram_regs(acb, dcb);
2645 if ((dcb->sync_mode & SYNC_NEGO_ENABLE)
2646 && !(dcb->sync_mode & SYNC_NEGO_DONE)) {
2647 build_sdtr(acb, dcb, srb);
2648 DC395x_ENABLE_MSGOUT;
2649 dprintkdbg(DBG_0, "msgin_set_nowide: Rejected. Try SDTR anyway\n");
2653 static void msgin_set_wide(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb)
2655 struct DeviceCtlBlk *dcb = srb->dcb;
2656 u8 wide = (dcb->dev_mode & NTC_DO_WIDE_NEGO
2657 && acb->config & HCC_WIDE_CARD) ? 1 : 0;
2658 dprintkdbg(DBG_1, "msgin_set_wide: <%02i>\n", dcb->target_id);
2660 if (srb->msgin_buf[3] > wide)
2661 srb->msgin_buf[3] = wide;
2663 if (!(srb->state & SRB_DO_WIDE_NEGO)) {
2664 dprintkl(KERN_DEBUG,
2665 "msgin_set_wide: Wide nego initiated <%02i>\n",
2667 memcpy(srb->msgout_buf, srb->msgin_buf, 4);
2669 srb->state |= SRB_DO_WIDE_NEGO;
2670 DC395x_ENABLE_MSGOUT;
2673 dcb->sync_mode |= (WIDE_NEGO_ENABLE | WIDE_NEGO_DONE);
2674 if (srb->msgin_buf[3] > 0)
2675 dcb->sync_period |= WIDE_SYNC;
2677 dcb->sync_period &= ~WIDE_SYNC;
2678 srb->state &= ~SRB_DO_WIDE_NEGO;
2679 /*dcb->sync_mode &= ~(WIDE_NEGO_ENABLE+WIDE_NEGO_DONE); */
2681 "msgin_set_wide: Wide (%i bit) negotiated <%02i>\n",
2682 (8 << srb->msgin_buf[3]), dcb->target_id);
2683 reprogram_regs(acb, dcb);
2684 if ((dcb->sync_mode & SYNC_NEGO_ENABLE)
2685 && !(dcb->sync_mode & SYNC_NEGO_DONE)) {
2686 build_sdtr(acb, dcb, srb);
2687 DC395x_ENABLE_MSGOUT;
2688 dprintkdbg(DBG_0, "msgin_set_wide: Also try SDTR.\n");
2694 * extended message codes:
2699 * 00h MODIFY DATA POINTER
2700 * 01h SYNCHRONOUS DATA TRANSFER REQUEST
2701 * 03h WIDE DATA TRANSFER REQUEST
2702 * 04h - 7Fh Reserved
2703 * 80h - FFh Vendor specific
2705 static void msgin_phase0(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb,
2708 struct DeviceCtlBlk *dcb = acb->active_dcb;
2709 dprintkdbg(DBG_0, "msgin_phase0: (0x%p)\n", srb->cmd);
2711 srb->msgin_buf[acb->msg_len++] = DC395x_read8(acb, TRM_S1040_SCSI_FIFO);
2712 if (msgin_completed(srb->msgin_buf, acb->msg_len)) {
2713 /* Now eval the msg */
2714 switch (srb->msgin_buf[0]) {
2716 srb->state = SRB_DISCONNECT;
2719 case SIMPLE_QUEUE_TAG:
2720 case HEAD_OF_QUEUE_TAG:
2721 case ORDERED_QUEUE_TAG:
2723 msgin_qtag(acb, dcb,
2727 case MESSAGE_REJECT:
2728 DC395x_write16(acb, TRM_S1040_SCSI_CONTROL,
2729 DO_CLRATN | DO_DATALATCH);
2730 /* A sync nego message was rejected ! */
2731 if (srb->state & SRB_DO_SYNC_NEGO) {
2732 msgin_set_async(acb, srb);
2735 /* A wide nego message was rejected ! */
2736 if (srb->state & SRB_DO_WIDE_NEGO) {
2737 msgin_set_nowide(acb, srb);
2740 enable_msgout_abort(acb, srb);
2741 /*srb->state |= SRB_ABORT_SENT */
2744 case EXTENDED_MESSAGE:
2746 if (srb->msgin_buf[1] == 3
2747 && srb->msgin_buf[2] == EXTENDED_SDTR) {
2748 msgin_set_sync(acb, srb);
2752 if (srb->msgin_buf[1] == 2
2753 && srb->msgin_buf[2] == EXTENDED_WDTR
2754 && srb->msgin_buf[3] <= 2) { /* sanity check ... */
2755 msgin_set_wide(acb, srb);
2758 msgin_reject(acb, srb);
2761 case IGNORE_WIDE_RESIDUE:
2762 /* Discard wide residual */
2763 dprintkdbg(DBG_0, "msgin_phase0: Ignore Wide Residual!\n");
2766 case COMMAND_COMPLETE:
2767 /* nothing has to be done */
2772 * SAVE POINTER may be ignored as we have the struct
2773 * ScsiReqBlk* associated with the scsi command.
2775 dprintkdbg(DBG_0, "msgin_phase0: (0x%p) "
2776 "SAVE POINTER rem=%i Ignore\n",
2777 srb->cmd, srb->total_xfer_length);
2780 case RESTORE_POINTERS:
2781 dprintkdbg(DBG_0, "msgin_phase0: RESTORE POINTER. Ignore\n");
2785 dprintkdbg(DBG_0, "msgin_phase0: (0x%p) "
2786 "<%02i-%i> ABORT msg\n",
2787 srb->cmd, dcb->target_id,
2789 dcb->flag |= ABORT_DEV_;
2790 enable_msgout_abort(acb, srb);
2794 /* reject unknown messages */
2795 if (srb->msgin_buf[0] & IDENTIFY_BASE) {
2796 dprintkdbg(DBG_0, "msgin_phase0: Identify msg\n");
2798 srb->msgout_buf[0] = dcb->identify_msg;
2799 DC395x_ENABLE_MSGOUT;
2800 srb->state |= SRB_MSGOUT;
2803 msgin_reject(acb, srb);
2806 /* Clear counter and MsgIn state */
2807 srb->state &= ~SRB_MSGIN;
2810 *pscsi_status = PH_BUS_FREE;
2811 DC395x_write16(acb, TRM_S1040_SCSI_CONTROL, DO_DATALATCH); /* it's important ... you know! */
2812 DC395x_write8(acb, TRM_S1040_SCSI_COMMAND, SCMD_MSGACCEPT);
2816 static void msgin_phase1(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb,
2819 dprintkdbg(DBG_0, "msgin_phase1: (0x%p)\n", srb->cmd);
2820 clear_fifo(acb, "msgin_phase1");
2821 DC395x_write32(acb, TRM_S1040_SCSI_COUNTER, 1);
2822 if (!(srb->state & SRB_MSGIN)) {
2823 srb->state &= ~SRB_DISCONNECT;
2824 srb->state |= SRB_MSGIN;
2826 DC395x_write16(acb, TRM_S1040_SCSI_CONTROL, DO_DATALATCH); /* it's important for atn stop */
2828 DC395x_write8(acb, TRM_S1040_SCSI_COMMAND, SCMD_FIFO_IN);
2832 static void nop0(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb,
2838 static void nop1(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb,
2844 static void set_xfer_rate(struct AdapterCtlBlk *acb, struct DeviceCtlBlk *dcb)
2846 struct DeviceCtlBlk *i;
2848 /* set all lun device's period, offset */
2849 if (dcb->identify_msg & 0x07)
2852 if (acb->scan_devices) {
2853 current_sync_offset = dcb->sync_offset;
2857 list_for_each_entry(i, &acb->dcb_list, list)
2858 if (i->target_id == dcb->target_id) {
2859 i->sync_period = dcb->sync_period;
2860 i->sync_offset = dcb->sync_offset;
2861 i->sync_mode = dcb->sync_mode;
2862 i->min_nego_period = dcb->min_nego_period;
2867 static void disconnect(struct AdapterCtlBlk *acb)
2869 struct DeviceCtlBlk *dcb = acb->active_dcb;
2870 struct ScsiReqBlk *srb;
2873 dprintkl(KERN_ERR, "disconnect: No such device\n");
2875 /* Suspend queue for a while */
2878 HZ * acb->eeprom.delay_time;
2879 clear_fifo(acb, "disconnectEx");
2880 DC395x_write16(acb, TRM_S1040_SCSI_CONTROL, DO_HWRESELECT);
2883 srb = dcb->active_srb;
2884 acb->active_dcb = NULL;
2885 dprintkdbg(DBG_0, "disconnect: (0x%p)\n", srb->cmd);
2887 srb->scsi_phase = PH_BUS_FREE; /* initial phase */
2888 clear_fifo(acb, "disconnect");
2889 DC395x_write16(acb, TRM_S1040_SCSI_CONTROL, DO_HWRESELECT);
2890 if (srb->state & SRB_UNEXPECT_RESEL) {
2892 "disconnect: Unexpected reselection <%02i-%i>\n",
2893 dcb->target_id, dcb->target_lun);
2895 waiting_process_next(acb);
2896 } else if (srb->state & SRB_ABORT_SENT) {
2897 dcb->flag &= ~ABORT_DEV_;
2898 acb->last_reset = jiffies + HZ / 2 + 1;
2899 dprintkl(KERN_ERR, "disconnect: SRB_ABORT_SENT\n");
2900 doing_srb_done(acb, DID_ABORT, srb->cmd, 1);
2901 waiting_process_next(acb);
2903 if ((srb->state & (SRB_START_ + SRB_MSGOUT))
2905 state & (SRB_DISCONNECT | SRB_COMPLETED))) {
2907 * Selection time out
2908 * SRB_START_ || SRB_MSGOUT || (!SRB_DISCONNECT && !SRB_COMPLETED)
2910 /* Unexp. Disc / Sel Timeout */
2911 if (srb->state != SRB_START_
2912 && srb->state != SRB_MSGOUT) {
2913 srb->state = SRB_READY;
2914 dprintkl(KERN_DEBUG,
2915 "disconnect: (0x%p) Unexpected\n",
2917 srb->target_status = SCSI_STAT_SEL_TIMEOUT;
2920 /* Normal selection timeout */
2921 dprintkdbg(DBG_KG, "disconnect: (0x%p) "
2922 "<%02i-%i> SelTO\n", srb->cmd,
2923 dcb->target_id, dcb->target_lun);
2924 if (srb->retry_count++ > DC395x_MAX_RETRIES
2925 || acb->scan_devices) {
2926 srb->target_status =
2927 SCSI_STAT_SEL_TIMEOUT;
2931 list_move(&srb->list, &dcb->srb_waiting_list);
2933 "disconnect: (0x%p) Retry\n",
2935 waiting_set_timer(acb, HZ / 20);
2937 } else if (srb->state & SRB_DISCONNECT) {
2938 u8 bval = DC395x_read8(acb, TRM_S1040_SCSI_SIGNAL);
2940 * SRB_DISCONNECT (This is what we expect!)
2943 dprintkdbg(DBG_0, "disconnect: SCSI bus stat "
2944 " 0x%02x: ACK set! Other controllers?\n",
2946 /* It could come from another initiator, therefore don't do much ! */
2948 waiting_process_next(acb);
2949 } else if (srb->state & SRB_COMPLETED) {
2955 dcb->active_srb = NULL;
2956 srb->state = SRB_FREE;
2957 srb_done(acb, dcb, srb);
2963 static void reselect(struct AdapterCtlBlk *acb)
2965 struct DeviceCtlBlk *dcb = acb->active_dcb;
2966 struct ScsiReqBlk *srb = NULL;
2967 u16 rsel_tar_lun_id;
2969 dprintkdbg(DBG_0, "reselect: acb=%p\n", acb);
2971 clear_fifo(acb, "reselect");
2972 /*DC395x_write16(acb, TRM_S1040_SCSI_CONTROL, DO_HWRESELECT | DO_DATALATCH); */
2973 /* Read Reselected Target ID and LUN */
2974 rsel_tar_lun_id = DC395x_read16(acb, TRM_S1040_SCSI_TARGETID);
2975 if (dcb) { /* Arbitration lost but Reselection win */
2976 srb = dcb->active_srb;
2978 dprintkl(KERN_DEBUG, "reselect: Arb lost Resel won, "
2979 "but active_srb == NULL\n");
2980 DC395x_write16(acb, TRM_S1040_SCSI_CONTROL, DO_DATALATCH); /* it's important for atn stop */
2984 if (!acb->scan_devices) {
2985 dprintkdbg(DBG_KG, "reselect: (0x%p) <%02i-%i> "
2986 "Arb lost but Resel win rsel=%i stat=0x%04x\n",
2987 srb->cmd, dcb->target_id,
2988 dcb->target_lun, rsel_tar_lun_id,
2989 DC395x_read16(acb, TRM_S1040_SCSI_STATUS));
2990 /*srb->state |= SRB_DISCONNECT; */
2992 srb->state = SRB_READY;
2994 list_move(&srb->list, &dcb->srb_waiting_list);
2995 waiting_set_timer(acb, HZ / 20);
3000 /* Read Reselected Target Id and LUN */
3001 if (!(rsel_tar_lun_id & (IDENTIFY_BASE << 8)))
3002 dprintkl(KERN_DEBUG, "reselect: Expects identify msg. "
3003 "Got %i!\n", rsel_tar_lun_id);
3004 id = rsel_tar_lun_id & 0xff;
3005 lun = (rsel_tar_lun_id >> 8) & 7;
3006 dcb = find_dcb(acb, id, lun);
3008 dprintkl(KERN_ERR, "reselect: From non existent device "
3009 "<%02i-%i>\n", id, lun);
3010 DC395x_write16(acb, TRM_S1040_SCSI_CONTROL, DO_DATALATCH); /* it's important for atn stop */
3013 acb->active_dcb = dcb;
3015 if (!(dcb->dev_mode & NTC_DO_DISCONNECT))
3016 dprintkl(KERN_DEBUG, "reselect: in spite of forbidden "
3017 "disconnection? <%02i-%i>\n",
3018 dcb->target_id, dcb->target_lun);
3020 if (dcb->sync_mode & EN_TAG_QUEUEING) {
3022 dcb->active_srb = srb;
3024 /* There can be only one! */
3025 srb = dcb->active_srb;
3026 if (!srb || !(srb->state & SRB_DISCONNECT)) {
3030 dprintkl(KERN_DEBUG,
3031 "reselect: w/o disconnected cmds <%02i-%i>\n",
3032 dcb->target_id, dcb->target_lun);
3034 srb->state = SRB_UNEXPECT_RESEL;
3035 dcb->active_srb = srb;
3036 enable_msgout_abort(acb, srb);
3038 if (dcb->flag & ABORT_DEV_) {
3039 /*srb->state = SRB_ABORT_SENT; */
3040 enable_msgout_abort(acb, srb);
3042 srb->state = SRB_DATA_XFER;
3046 srb->scsi_phase = PH_BUS_FREE; /* initial phase */
3048 /* Program HA ID, target ID, period and offset */
3049 dprintkdbg(DBG_0, "reselect: select <%i>\n", dcb->target_id);
3050 DC395x_write8(acb, TRM_S1040_SCSI_HOSTID, acb->scsi_host->this_id); /* host ID */
3051 DC395x_write8(acb, TRM_S1040_SCSI_TARGETID, dcb->target_id); /* target ID */
3052 DC395x_write8(acb, TRM_S1040_SCSI_OFFSET, dcb->sync_offset); /* offset */
3053 DC395x_write8(acb, TRM_S1040_SCSI_SYNC, dcb->sync_period); /* sync period, wide */
3054 DC395x_write16(acb, TRM_S1040_SCSI_CONTROL, DO_DATALATCH); /* it's important for atn stop */
3056 DC395x_write8(acb, TRM_S1040_SCSI_COMMAND, SCMD_MSGACCEPT);
3060 static inline u8 tagq_blacklist(char *name)
3062 #ifndef DC395x_NO_TAGQ
3065 for (i = 0; i < BADDEVCNT; i++)
3066 if (memcmp(name, DC395x_baddevname1[i], 28) == 0)
3076 static void disc_tagq_set(struct DeviceCtlBlk *dcb, struct ScsiInqData *ptr)
3078 /* Check for SCSI format (ANSI and Response data format) */
3079 if ((ptr->Vers & 0x07) >= 2 || (ptr->RDF & 0x0F) == 2) {
3080 if ((ptr->Flags & SCSI_INQ_CMDQUEUE)
3081 && (dcb->dev_mode & NTC_DO_TAG_QUEUEING) &&
3082 /*(dcb->dev_mode & NTC_DO_DISCONNECT) */
3083 /* ((dcb->dev_type == TYPE_DISK)
3084 || (dcb->dev_type == TYPE_MOD)) && */
3085 !tagq_blacklist(((char *)ptr) + 8)) {
3086 if (dcb->max_command == 1)
3088 dcb->acb->tag_max_num;
3089 dcb->sync_mode |= EN_TAG_QUEUEING;
3090 /*dcb->tag_mask = 0; */
3092 dcb->max_command = 1;
3097 static void add_dev(struct AdapterCtlBlk *acb, struct DeviceCtlBlk *dcb,
3098 struct ScsiInqData *ptr)
3100 u8 bval1 = ptr->DevType & SCSI_DEVTYPE;
3101 dcb->dev_type = bval1;
3102 /* if (bval1 == TYPE_DISK || bval1 == TYPE_MOD) */
3103 disc_tagq_set(dcb, ptr);
3107 /* unmap mapped pci regions from SRB */
3108 static void pci_unmap_srb(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb)
3110 struct scsi_cmnd *cmd = srb->cmd;
3111 enum dma_data_direction dir = cmd->sc_data_direction;
3113 if (scsi_sg_count(cmd) && dir != DMA_NONE) {
3114 /* unmap DC395x SG list */
3115 dprintkdbg(DBG_SG, "pci_unmap_srb: list=%08x(%05x)\n",
3116 srb->sg_bus_addr, SEGMENTX_LEN);
3117 dma_unmap_single(&acb->dev->dev, srb->sg_bus_addr, SEGMENTX_LEN,
3119 dprintkdbg(DBG_SG, "pci_unmap_srb: segs=%i buffer=%p\n",
3120 scsi_sg_count(cmd), scsi_bufflen(cmd));
3121 /* unmap the sg segments */
3122 scsi_dma_unmap(cmd);
3127 /* unmap mapped pci sense buffer from SRB */
3128 static void pci_unmap_srb_sense(struct AdapterCtlBlk *acb,
3129 struct ScsiReqBlk *srb)
3131 if (!(srb->flag & AUTO_REQSENSE))
3133 /* Unmap sense buffer */
3134 dprintkdbg(DBG_SG, "pci_unmap_srb_sense: buffer=%08x\n",
3135 srb->segment_x[0].address);
3136 dma_unmap_single(&acb->dev->dev, srb->segment_x[0].address,
3137 srb->segment_x[0].length, DMA_FROM_DEVICE);
3138 /* Restore SG stuff */
3139 srb->total_xfer_length = srb->xferred;
3140 srb->segment_x[0].address =
3141 srb->segment_x[DC395x_MAX_SG_LISTENTRY - 1].address;
3142 srb->segment_x[0].length =
3143 srb->segment_x[DC395x_MAX_SG_LISTENTRY - 1].length;
3148 * Complete execution of a SCSI command
3149 * Signal completion to the generic SCSI driver
3151 static void srb_done(struct AdapterCtlBlk *acb, struct DeviceCtlBlk *dcb,
3152 struct ScsiReqBlk *srb)
3155 struct scsi_cmnd *cmd = srb->cmd;
3156 enum dma_data_direction dir = cmd->sc_data_direction;
3159 dprintkdbg(DBG_1, "srb_done: (0x%p) <%02i-%i>\n", srb->cmd,
3160 srb->cmd->device->id, (u8)srb->cmd->device->lun);
3161 dprintkdbg(DBG_SG, "srb_done: srb=%p sg=%i(%i/%i) buf=%p\n",
3162 srb, scsi_sg_count(cmd), srb->sg_index, srb->sg_count,
3164 status = srb->target_status;
3165 set_host_byte(cmd, DID_OK);
3166 set_status_byte(cmd, SAM_STAT_GOOD);
3167 if (srb->flag & AUTO_REQSENSE) {
3168 dprintkdbg(DBG_0, "srb_done: AUTO_REQSENSE1\n");
3169 pci_unmap_srb_sense(acb, srb);
3171 ** target status..........................
3173 srb->flag &= ~AUTO_REQSENSE;
3174 srb->adapter_status = 0;
3175 srb->target_status = SAM_STAT_CHECK_CONDITION;
3176 if (debug_enabled(DBG_1)) {
3177 switch (cmd->sense_buffer[2] & 0x0f) {
3179 dprintkl(KERN_DEBUG,
3180 "ReqSense: NOT_READY cmnd=0x%02x <%02i-%i> stat=%i scan=%i ",
3181 cmd->cmnd[0], dcb->target_id,
3182 dcb->target_lun, status, acb->scan_devices);
3184 case UNIT_ATTENTION:
3185 dprintkl(KERN_DEBUG,
3186 "ReqSense: UNIT_ATTENTION cmnd=0x%02x <%02i-%i> stat=%i scan=%i ",
3187 cmd->cmnd[0], dcb->target_id,
3188 dcb->target_lun, status, acb->scan_devices);
3190 case ILLEGAL_REQUEST:
3191 dprintkl(KERN_DEBUG,
3192 "ReqSense: ILLEGAL_REQUEST cmnd=0x%02x <%02i-%i> stat=%i scan=%i ",
3193 cmd->cmnd[0], dcb->target_id,
3194 dcb->target_lun, status, acb->scan_devices);
3197 dprintkl(KERN_DEBUG,
3198 "ReqSense: MEDIUM_ERROR cmnd=0x%02x <%02i-%i> stat=%i scan=%i ",
3199 cmd->cmnd[0], dcb->target_id,
3200 dcb->target_lun, status, acb->scan_devices);
3202 case HARDWARE_ERROR:
3203 dprintkl(KERN_DEBUG,
3204 "ReqSense: HARDWARE_ERROR cmnd=0x%02x <%02i-%i> stat=%i scan=%i ",
3205 cmd->cmnd[0], dcb->target_id,
3206 dcb->target_lun, status, acb->scan_devices);
3209 if (cmd->sense_buffer[7] >= 6)
3210 printk("sense=0x%02x ASC=0x%02x ASCQ=0x%02x "
3211 "(0x%08x 0x%08x)\n",
3212 cmd->sense_buffer[2], cmd->sense_buffer[12],
3213 cmd->sense_buffer[13],
3214 *((unsigned int *)(cmd->sense_buffer + 3)),
3215 *((unsigned int *)(cmd->sense_buffer + 8)));
3217 printk("sense=0x%02x No ASC/ASCQ (0x%08x)\n",
3218 cmd->sense_buffer[2],
3219 *((unsigned int *)(cmd->sense_buffer + 3)));
3222 if (status == SAM_STAT_CHECK_CONDITION) {
3223 set_host_byte(cmd, DID_BAD_TARGET);
3226 dprintkdbg(DBG_0, "srb_done: AUTO_REQSENSE2\n");
3228 set_status_byte(cmd, SAM_STAT_CHECK_CONDITION);
3233 /*************************************************************/
3236 * target status..........................
3238 if (status == SAM_STAT_CHECK_CONDITION) {
3239 request_sense(acb, dcb, srb);
3241 } else if (status == SAM_STAT_TASK_SET_FULL) {
3242 tempcnt = (u8)list_size(&dcb->srb_going_list);
3243 dprintkl(KERN_INFO, "QUEUE_FULL for dev <%02i-%i> with %i cmnds\n",
3244 dcb->target_id, dcb->target_lun, tempcnt);
3247 dcb->max_command = tempcnt;
3249 list_move(&srb->list, &dcb->srb_waiting_list);
3250 waiting_set_timer(acb, HZ / 20);
3251 srb->adapter_status = 0;
3252 srb->target_status = 0;
3254 } else if (status == SCSI_STAT_SEL_TIMEOUT) {
3255 srb->adapter_status = H_SEL_TIMEOUT;
3256 srb->target_status = 0;
3257 set_host_byte(cmd, DID_NO_CONNECT);
3259 srb->adapter_status = 0;
3260 set_host_byte(cmd, DID_ERROR);
3261 set_status_byte(cmd, status);
3265 ** process initiator status..........................
3267 status = srb->adapter_status;
3268 if (status & H_OVER_UNDER_RUN) {
3269 srb->target_status = 0;
3270 scsi_msg_to_host_byte(cmd, srb->end_message);
3271 } else if (srb->status & PARITY_ERROR) {
3272 set_host_byte(cmd, DID_PARITY);
3273 } else { /* No error */
3275 srb->adapter_status = 0;
3276 srb->target_status = 0;
3281 /* Check Error Conditions */
3284 pci_unmap_srb(acb, srb);
3286 if (cmd->cmnd[0] == INQUIRY) {
3287 unsigned char *base = NULL;
3288 struct ScsiInqData *ptr;
3289 unsigned long flags = 0;
3290 struct scatterlist* sg = scsi_sglist(cmd);
3291 size_t offset = 0, len = sizeof(struct ScsiInqData);
3293 local_irq_save(flags);
3294 base = scsi_kmap_atomic_sg(sg, scsi_sg_count(cmd), &offset, &len);
3295 ptr = (struct ScsiInqData *)(base + offset);
3297 if (!ckc_only && get_host_byte(cmd) == DID_OK
3298 && cmd->cmnd[2] == 0 && scsi_bufflen(cmd) >= 8
3299 && dir != DMA_NONE && ptr && (ptr->Vers & 0x07) >= 2)
3300 dcb->inquiry7 = ptr->Flags;
3302 /*if( srb->cmd->cmnd[0] == INQUIRY && */
3303 /* (host_byte(cmd->result) == DID_OK || status_byte(cmd->result) & CHECK_CONDITION) ) */
3304 if ((get_host_byte(cmd) == DID_OK) ||
3305 (get_status_byte(cmd) == SAM_STAT_CHECK_CONDITION)) {
3306 if (!dcb->init_tcq_flag) {
3307 add_dev(acb, dcb, ptr);
3308 dcb->init_tcq_flag = 1;
3312 scsi_kunmap_atomic_sg(base);
3313 local_irq_restore(flags);
3316 /* Here is the info for Doug Gilbert's sg3 ... */
3317 scsi_set_resid(cmd, srb->total_xfer_length);
3318 /* This may be interpreted by sb. or not ... */
3319 cmd->SCp.this_residual = srb->total_xfer_length;
3320 cmd->SCp.buffers_residual = 0;
3321 if (debug_enabled(DBG_KG)) {
3322 if (srb->total_xfer_length)
3323 dprintkdbg(DBG_KG, "srb_done: (0x%p) <%02i-%i> "
3324 "cmnd=0x%02x Missed %i bytes\n",
3325 cmd, cmd->device->id, (u8)cmd->device->lun,
3326 cmd->cmnd[0], srb->total_xfer_length);
3329 if (srb != acb->tmp_srb) {
3330 /* Add to free list */
3331 dprintkdbg(DBG_0, "srb_done: (0x%p) done result=0x%08x\n",
3333 list_move_tail(&srb->list, &acb->srb_free_list);
3335 dprintkl(KERN_ERR, "srb_done: ERROR! Completed cmd with tmp_srb\n");
3339 waiting_process_next(acb);
3343 /* abort all cmds in our queues */
3344 static void doing_srb_done(struct AdapterCtlBlk *acb, u8 did_flag,
3345 struct scsi_cmnd *cmd, u8 force)
3347 struct DeviceCtlBlk *dcb;
3348 dprintkl(KERN_INFO, "doing_srb_done: pids ");
3350 list_for_each_entry(dcb, &acb->dcb_list, list) {
3351 struct ScsiReqBlk *srb;
3352 struct ScsiReqBlk *tmp;
3353 struct scsi_cmnd *p;
3355 list_for_each_entry_safe(srb, tmp, &dcb->srb_going_list, list) {
3357 printk("G:%p(%02i-%i) ", p,
3358 p->device->id, (u8)p->device->lun);
3359 list_del(&srb->list);
3361 list_add_tail(&srb->list, &acb->srb_free_list);
3362 set_host_byte(p, did_flag);
3363 set_status_byte(p, SAM_STAT_GOOD);
3364 pci_unmap_srb_sense(acb, srb);
3365 pci_unmap_srb(acb, srb);
3367 /* For new EH, we normally don't need to give commands back,
3368 * as they all complete or all time out */
3372 if (!list_empty(&dcb->srb_going_list))
3373 dprintkl(KERN_DEBUG,
3374 "How could the ML send cmnds to the Going queue? <%02i-%i>\n",
3375 dcb->target_id, dcb->target_lun);
3377 dprintkl(KERN_DEBUG,
3378 "tag_mask for <%02i-%i> should be empty, is %08x!\n",
3379 dcb->target_id, dcb->target_lun,
3383 list_for_each_entry_safe(srb, tmp, &dcb->srb_waiting_list, list) {
3386 printk("W:%p<%02i-%i>", p, p->device->id,
3387 (u8)p->device->lun);
3388 list_move_tail(&srb->list, &acb->srb_free_list);
3389 set_host_byte(p, did_flag);
3390 set_status_byte(p, SAM_STAT_GOOD);
3391 pci_unmap_srb_sense(acb, srb);
3392 pci_unmap_srb(acb, srb);
3394 /* For new EH, we normally don't need to give commands back,
3395 * as they all complete or all time out */
3399 if (!list_empty(&dcb->srb_waiting_list))
3400 dprintkl(KERN_DEBUG, "ML queued %i cmnds again to <%02i-%i>\n",
3401 list_size(&dcb->srb_waiting_list), dcb->target_id,
3403 dcb->flag &= ~ABORT_DEV_;
3409 static void reset_scsi_bus(struct AdapterCtlBlk *acb)
3411 dprintkdbg(DBG_0, "reset_scsi_bus: acb=%p\n", acb);
3412 acb->acb_flag |= RESET_DEV; /* RESET_DETECT, RESET_DONE, RESET_DEV */
3413 DC395x_write16(acb, TRM_S1040_SCSI_CONTROL, DO_RSTSCSI);
3415 while (!(DC395x_read8(acb, TRM_S1040_SCSI_INTSTATUS) & INT_SCSIRESET))
3420 static void set_basic_config(struct AdapterCtlBlk *acb)
3424 DC395x_write8(acb, TRM_S1040_SCSI_TIMEOUT, acb->sel_timeout);
3425 if (acb->config & HCC_PARITY)
3426 bval = PHASELATCH | INITIATOR | BLOCKRST | PARITYCHECK;
3428 bval = PHASELATCH | INITIATOR | BLOCKRST;
3430 DC395x_write8(acb, TRM_S1040_SCSI_CONFIG0, bval);
3432 /* program configuration 1: Act_Neg (+ Act_Neg_Enh? + Fast_Filter? + DataDis?) */
3433 DC395x_write8(acb, TRM_S1040_SCSI_CONFIG1, 0x03); /* was 0x13: default */
3434 /* program Host ID */
3435 DC395x_write8(acb, TRM_S1040_SCSI_HOSTID, acb->scsi_host->this_id);
3436 /* set ansynchronous transfer */
3437 DC395x_write8(acb, TRM_S1040_SCSI_OFFSET, 0x00);
3438 /* Turn LED control off */
3439 wval = DC395x_read16(acb, TRM_S1040_GEN_CONTROL) & 0x7F;
3440 DC395x_write16(acb, TRM_S1040_GEN_CONTROL, wval);
3442 wval = DC395x_read16(acb, TRM_S1040_DMA_CONFIG) & ~DMA_FIFO_CTRL;
3444 DMA_FIFO_HALF_HALF | DMA_ENHANCE /*| DMA_MEM_MULTI_READ */ ;
3445 DC395x_write16(acb, TRM_S1040_DMA_CONFIG, wval);
3446 /* Clear pending interrupt status */
3447 DC395x_read8(acb, TRM_S1040_SCSI_INTSTATUS);
3448 /* Enable SCSI interrupt */
3449 DC395x_write8(acb, TRM_S1040_SCSI_INTEN, 0x7F);
3450 DC395x_write8(acb, TRM_S1040_DMA_INTEN, EN_SCSIINTR | EN_DMAXFERERROR
3451 /*| EN_DMAXFERABORT | EN_DMAXFERCOMP | EN_FORCEDMACOMP */
3456 static void scsi_reset_detect(struct AdapterCtlBlk *acb)
3458 dprintkl(KERN_INFO, "scsi_reset_detect: acb=%p\n", acb);
3459 /* delay half a second */
3460 if (timer_pending(&acb->waiting_timer))
3461 del_timer(&acb->waiting_timer);
3463 DC395x_write8(acb, TRM_S1040_SCSI_CONTROL, DO_RSTMODULE);
3464 DC395x_write8(acb, TRM_S1040_DMA_CONTROL, DMARESETMODULE);
3465 /*DC395x_write8(acb, TRM_S1040_DMA_CONTROL,STOPDMAXFER); */
3467 /* Maybe we locked up the bus? Then lets wait even longer ... */
3469 jiffies + 5 * HZ / 2 +
3470 HZ * acb->eeprom.delay_time;
3472 clear_fifo(acb, "scsi_reset_detect");
3473 set_basic_config(acb);
3475 /*DC395x_write16(acb, TRM_S1040_SCSI_CONTROL, DO_HWRESELECT); */
3477 if (acb->acb_flag & RESET_DEV) { /* RESET_DETECT, RESET_DONE, RESET_DEV */
3478 acb->acb_flag |= RESET_DONE;
3480 acb->acb_flag |= RESET_DETECT;
3481 reset_dev_param(acb);
3482 doing_srb_done(acb, DID_RESET, NULL, 1);
3483 /*DC395x_RecoverSRB( acb ); */
3484 acb->active_dcb = NULL;
3486 waiting_process_next(acb);
3491 static void request_sense(struct AdapterCtlBlk *acb, struct DeviceCtlBlk *dcb,
3492 struct ScsiReqBlk *srb)
3494 struct scsi_cmnd *cmd = srb->cmd;
3495 dprintkdbg(DBG_1, "request_sense: (0x%p) <%02i-%i>\n",
3496 cmd, cmd->device->id, (u8)cmd->device->lun);
3498 srb->flag |= AUTO_REQSENSE;
3499 srb->adapter_status = 0;
3500 srb->target_status = 0;
3502 /* KG: Can this prevent crap sense data ? */
3503 memset(cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
3505 /* Save some data */
3506 srb->segment_x[DC395x_MAX_SG_LISTENTRY - 1].address =
3507 srb->segment_x[0].address;
3508 srb->segment_x[DC395x_MAX_SG_LISTENTRY - 1].length =
3509 srb->segment_x[0].length;
3510 srb->xferred = srb->total_xfer_length;
3511 /* srb->segment_x : a one entry of S/G list table */
3512 srb->total_xfer_length = SCSI_SENSE_BUFFERSIZE;
3513 srb->segment_x[0].length = SCSI_SENSE_BUFFERSIZE;
3514 /* Map sense buffer */
3515 srb->segment_x[0].address = dma_map_single(&acb->dev->dev,
3516 cmd->sense_buffer, SCSI_SENSE_BUFFERSIZE,
3518 dprintkdbg(DBG_SG, "request_sense: map buffer %p->%08x(%05x)\n",
3519 cmd->sense_buffer, srb->segment_x[0].address,
3520 SCSI_SENSE_BUFFERSIZE);
3524 if (start_scsi(acb, dcb, srb)) { /* Should only happen, if sb. else grabs the bus */
3525 dprintkl(KERN_DEBUG,
3526 "request_sense: (0x%p) failed <%02i-%i>\n",
3527 srb->cmd, dcb->target_id, dcb->target_lun);
3528 list_move(&srb->list, &dcb->srb_waiting_list);
3529 waiting_set_timer(acb, HZ / 100);
3535 * device_alloc - Allocate a new device instance. This create the
3536 * devices instance and sets up all the data items. The adapter
3537 * instance is required to obtain confiuration information for this
3538 * device. This does *not* add this device to the adapters device
3541 * @acb: The adapter to obtain configuration information from.
3542 * @target: The target for the new device.
3543 * @lun: The lun for the new device.
3545 * Return the new device if successful or NULL on failure.
3547 static struct DeviceCtlBlk *device_alloc(struct AdapterCtlBlk *acb,
3550 struct NvRamType *eeprom = &acb->eeprom;
3551 u8 period_index = eeprom->target[target].period & 0x07;
3552 struct DeviceCtlBlk *dcb;
3554 dcb = kmalloc(sizeof(struct DeviceCtlBlk), GFP_ATOMIC);
3555 dprintkdbg(DBG_0, "device_alloc: <%02i-%i>\n", target, lun);
3559 INIT_LIST_HEAD(&dcb->srb_going_list);
3560 INIT_LIST_HEAD(&dcb->srb_waiting_list);
3561 dcb->active_srb = NULL;
3563 dcb->max_command = 1;
3564 dcb->target_id = target;
3565 dcb->target_lun = lun;
3566 dcb->dev_mode = eeprom->target[target].cfg0;
3567 #ifndef DC395x_NO_DISCONNECT
3569 IDENTIFY(dcb->dev_mode & NTC_DO_DISCONNECT, lun);
3571 dcb->identify_msg = IDENTIFY(0, lun);
3575 dcb->min_nego_period = clock_period[period_index];
3576 dcb->sync_period = 0;
3577 dcb->sync_offset = 0;
3580 #ifndef DC395x_NO_WIDE
3581 if ((dcb->dev_mode & NTC_DO_WIDE_NEGO)
3582 && (acb->config & HCC_WIDE_CARD))
3583 dcb->sync_mode |= WIDE_NEGO_ENABLE;
3585 #ifndef DC395x_NO_SYNC
3586 if (dcb->dev_mode & NTC_DO_SYNC_NEGO)
3587 if (!(lun) || current_sync_offset)
3588 dcb->sync_mode |= SYNC_NEGO_ENABLE;
3590 if (dcb->target_lun != 0) {
3592 struct DeviceCtlBlk *p;
3593 list_for_each_entry(p, &acb->dcb_list, list)
3594 if (p->target_id == dcb->target_id)
3597 "device_alloc: <%02i-%i> copy from <%02i-%i>\n",
3598 dcb->target_id, dcb->target_lun,
3599 p->target_id, p->target_lun);
3600 dcb->sync_mode = p->sync_mode;
3601 dcb->sync_period = p->sync_period;
3602 dcb->min_nego_period = p->min_nego_period;
3603 dcb->sync_offset = p->sync_offset;
3604 dcb->inquiry7 = p->inquiry7;
3611 * adapter_add_device - Adds the device instance to the adaptor instance.
3613 * @acb: The adapter device to be updated
3614 * @dcb: A newly created and initialised device instance to add.
3616 static void adapter_add_device(struct AdapterCtlBlk *acb,
3617 struct DeviceCtlBlk *dcb)
3619 /* backpointer to adapter */
3622 /* set run_robin to this device if it is currently empty */
3623 if (list_empty(&acb->dcb_list))
3624 acb->dcb_run_robin = dcb;
3626 /* add device to list */
3627 list_add_tail(&dcb->list, &acb->dcb_list);
3629 /* update device maps */
3630 acb->dcb_map[dcb->target_id] |= (1 << dcb->target_lun);
3631 acb->children[dcb->target_id][dcb->target_lun] = dcb;
3636 * adapter_remove_device - Removes the device instance from the adaptor
3637 * instance. The device instance is not check in any way or freed by this.
3638 * The caller is expected to take care of that. This will simply remove the
3639 * device from the adapters data strcutures.
3641 * @acb: The adapter device to be updated
3642 * @dcb: A device that has previously been added to the adapter.
3644 static void adapter_remove_device(struct AdapterCtlBlk *acb,
3645 struct DeviceCtlBlk *dcb)
3647 struct DeviceCtlBlk *i;
3648 struct DeviceCtlBlk *tmp;
3649 dprintkdbg(DBG_0, "adapter_remove_device: <%02i-%i>\n",
3650 dcb->target_id, dcb->target_lun);
3652 /* fix up any pointers to this device that we have in the adapter */
3653 if (acb->active_dcb == dcb)
3654 acb->active_dcb = NULL;
3655 if (acb->dcb_run_robin == dcb)
3656 acb->dcb_run_robin = dcb_get_next(&acb->dcb_list, dcb);
3658 /* unlink from list */
3659 list_for_each_entry_safe(i, tmp, &acb->dcb_list, list)
3665 /* clear map and children */
3666 acb->dcb_map[dcb->target_id] &= ~(1 << dcb->target_lun);
3667 acb->children[dcb->target_id][dcb->target_lun] = NULL;
3673 * adapter_remove_and_free_device - Removes a single device from the adapter
3674 * and then frees the device information.
3676 * @acb: The adapter device to be updated
3677 * @dcb: A device that has previously been added to the adapter.
3679 static void adapter_remove_and_free_device(struct AdapterCtlBlk *acb,
3680 struct DeviceCtlBlk *dcb)
3682 if (list_size(&dcb->srb_going_list) > 1) {
3683 dprintkdbg(DBG_1, "adapter_remove_and_free_device: <%02i-%i> "
3684 "Won't remove because of %i active requests.\n",
3685 dcb->target_id, dcb->target_lun,
3686 list_size(&dcb->srb_going_list));
3689 adapter_remove_device(acb, dcb);
3695 * adapter_remove_and_free_all_devices - Removes and frees all of the
3696 * devices associated with the specified adapter.
3698 * @acb: The adapter from which all devices should be removed.
3700 static void adapter_remove_and_free_all_devices(struct AdapterCtlBlk* acb)
3702 struct DeviceCtlBlk *dcb;
3703 struct DeviceCtlBlk *tmp;
3704 dprintkdbg(DBG_1, "adapter_remove_and_free_all_devices: num=%i\n",
3705 list_size(&acb->dcb_list));
3707 list_for_each_entry_safe(dcb, tmp, &acb->dcb_list, list)
3708 adapter_remove_and_free_device(acb, dcb);
3713 * dc395x_slave_alloc - Called by the scsi mid layer to tell us about a new
3714 * scsi device that we need to deal with. We allocate a new device and then
3715 * insert that device into the adapters device list.
3717 * @scsi_device: The new scsi device that we need to handle.
3719 static int dc395x_slave_alloc(struct scsi_device *scsi_device)
3721 struct AdapterCtlBlk *acb = (struct AdapterCtlBlk *)scsi_device->host->hostdata;
3722 struct DeviceCtlBlk *dcb;
3724 dcb = device_alloc(acb, scsi_device->id, scsi_device->lun);
3727 adapter_add_device(acb, dcb);
3734 * dc395x_slave_destroy - Called by the scsi mid layer to tell us about a
3735 * device that is going away.
3737 * @scsi_device: The new scsi device that we need to handle.
3739 static void dc395x_slave_destroy(struct scsi_device *scsi_device)
3741 struct AdapterCtlBlk *acb = (struct AdapterCtlBlk *)scsi_device->host->hostdata;
3742 struct DeviceCtlBlk *dcb = find_dcb(acb, scsi_device->id, scsi_device->lun);
3744 adapter_remove_and_free_device(acb, dcb);
3751 * trms1040_wait_30us: wait for 30 us
3753 * Waits for 30us (using the chip by the looks of it..)
3755 * @io_port: base I/O address
3757 static void trms1040_wait_30us(unsigned long io_port)
3759 /* ScsiPortStallExecution(30); wait 30 us */
3760 outb(5, io_port + TRM_S1040_GEN_TIMER);
3761 while (!(inb(io_port + TRM_S1040_GEN_STATUS) & GTIMEOUT))
3767 * trms1040_write_cmd - write the secified command and address to
3770 * @io_port: base I/O address
3771 * @cmd: SB + op code (command) to send
3772 * @addr: address to send
3774 static void trms1040_write_cmd(unsigned long io_port, u8 cmd, u8 addr)
3779 /* program SB + OP code */
3780 for (i = 0; i < 3; i++, cmd <<= 1) {
3781 send_data = NVR_SELECT;
3782 if (cmd & 0x04) /* Start from bit 2 */
3783 send_data |= NVR_BITOUT;
3785 outb(send_data, io_port + TRM_S1040_GEN_NVRAM);
3786 trms1040_wait_30us(io_port);
3787 outb((send_data | NVR_CLOCK),
3788 io_port + TRM_S1040_GEN_NVRAM);
3789 trms1040_wait_30us(io_port);
3793 for (i = 0; i < 7; i++, addr <<= 1) {
3794 send_data = NVR_SELECT;
3795 if (addr & 0x40) /* Start from bit 6 */
3796 send_data |= NVR_BITOUT;
3798 outb(send_data, io_port + TRM_S1040_GEN_NVRAM);
3799 trms1040_wait_30us(io_port);
3800 outb((send_data | NVR_CLOCK),
3801 io_port + TRM_S1040_GEN_NVRAM);
3802 trms1040_wait_30us(io_port);
3804 outb(NVR_SELECT, io_port + TRM_S1040_GEN_NVRAM);
3805 trms1040_wait_30us(io_port);
3810 * trms1040_set_data - store a single byte in the eeprom
3812 * Called from write all to write a single byte into the SSEEPROM
3813 * Which is done one bit at a time.
3815 * @io_port: base I/O address
3816 * @addr: offset into EEPROM
3817 * @byte: bytes to write
3819 static void trms1040_set_data(unsigned long io_port, u8 addr, u8 byte)
3824 /* Send write command & address */
3825 trms1040_write_cmd(io_port, 0x05, addr);
3828 for (i = 0; i < 8; i++, byte <<= 1) {
3829 send_data = NVR_SELECT;
3830 if (byte & 0x80) /* Start from bit 7 */
3831 send_data |= NVR_BITOUT;
3833 outb(send_data, io_port + TRM_S1040_GEN_NVRAM);
3834 trms1040_wait_30us(io_port);
3835 outb((send_data | NVR_CLOCK), io_port + TRM_S1040_GEN_NVRAM);
3836 trms1040_wait_30us(io_port);
3838 outb(NVR_SELECT, io_port + TRM_S1040_GEN_NVRAM);
3839 trms1040_wait_30us(io_port);
3841 /* Disable chip select */
3842 outb(0, io_port + TRM_S1040_GEN_NVRAM);
3843 trms1040_wait_30us(io_port);
3845 outb(NVR_SELECT, io_port + TRM_S1040_GEN_NVRAM);
3846 trms1040_wait_30us(io_port);
3848 /* Wait for write ready */
3850 outb((NVR_SELECT | NVR_CLOCK), io_port + TRM_S1040_GEN_NVRAM);
3851 trms1040_wait_30us(io_port);
3853 outb(NVR_SELECT, io_port + TRM_S1040_GEN_NVRAM);
3854 trms1040_wait_30us(io_port);
3856 if (inb(io_port + TRM_S1040_GEN_NVRAM) & NVR_BITIN)
3860 /* Disable chip select */
3861 outb(0, io_port + TRM_S1040_GEN_NVRAM);
3866 * trms1040_write_all - write 128 bytes to the eeprom
3868 * Write the supplied 128 bytes to the chips SEEPROM
3870 * @eeprom: the data to write
3871 * @io_port: the base io port
3873 static void trms1040_write_all(struct NvRamType *eeprom, unsigned long io_port)
3875 u8 *b_eeprom = (u8 *)eeprom;
3878 /* Enable SEEPROM */
3879 outb((inb(io_port + TRM_S1040_GEN_CONTROL) | EN_EEPROM),
3880 io_port + TRM_S1040_GEN_CONTROL);
3883 trms1040_write_cmd(io_port, 0x04, 0xFF);
3884 outb(0, io_port + TRM_S1040_GEN_NVRAM);
3885 trms1040_wait_30us(io_port);
3888 for (addr = 0; addr < 128; addr++, b_eeprom++)
3889 trms1040_set_data(io_port, addr, *b_eeprom);
3892 trms1040_write_cmd(io_port, 0x04, 0x00);
3893 outb(0, io_port + TRM_S1040_GEN_NVRAM);
3894 trms1040_wait_30us(io_port);
3896 /* Disable SEEPROM */
3897 outb((inb(io_port + TRM_S1040_GEN_CONTROL) & ~EN_EEPROM),
3898 io_port + TRM_S1040_GEN_CONTROL);
3903 * trms1040_get_data - get a single byte from the eeprom
3905 * Called from read all to read a single byte into the SSEEPROM
3906 * Which is done one bit at a time.
3908 * @io_port: base I/O address
3909 * @addr: offset into SEEPROM
3911 * Returns the byte read.
3913 static u8 trms1040_get_data(unsigned long io_port, u8 addr)
3919 /* Send read command & address */
3920 trms1040_write_cmd(io_port, 0x06, addr);
3923 for (i = 0; i < 8; i++) {
3924 outb((NVR_SELECT | NVR_CLOCK), io_port + TRM_S1040_GEN_NVRAM);
3925 trms1040_wait_30us(io_port);
3926 outb(NVR_SELECT, io_port + TRM_S1040_GEN_NVRAM);
3928 /* Get data bit while falling edge */
3929 read_byte = inb(io_port + TRM_S1040_GEN_NVRAM);
3931 if (read_byte & NVR_BITIN)
3934 trms1040_wait_30us(io_port);
3937 /* Disable chip select */
3938 outb(0, io_port + TRM_S1040_GEN_NVRAM);
3944 * trms1040_read_all - read all bytes from the eeprom
3946 * Read the 128 bytes from the SEEPROM.
3948 * @eeprom: where to store the data
3949 * @io_port: the base io port
3951 static void trms1040_read_all(struct NvRamType *eeprom, unsigned long io_port)
3953 u8 *b_eeprom = (u8 *)eeprom;
3956 /* Enable SEEPROM */
3957 outb((inb(io_port + TRM_S1040_GEN_CONTROL) | EN_EEPROM),
3958 io_port + TRM_S1040_GEN_CONTROL);
3961 for (addr = 0; addr < 128; addr++, b_eeprom++)
3962 *b_eeprom = trms1040_get_data(io_port, addr);
3964 /* Disable SEEPROM */
3965 outb((inb(io_port + TRM_S1040_GEN_CONTROL) & ~EN_EEPROM),
3966 io_port + TRM_S1040_GEN_CONTROL);
3972 * check_eeprom - get and check contents of the eeprom
3974 * Read seeprom 128 bytes into the memory provider in eeprom.
3975 * Checks the checksum and if it's not correct it uses a set of default
3978 * @eeprom: caller allocated strcuture to read the eeprom data into
3979 * @io_port: io port to read from
3981 static void check_eeprom(struct NvRamType *eeprom, unsigned long io_port)
3983 u16 *w_eeprom = (u16 *)eeprom;
3989 trms1040_read_all(eeprom, io_port); /* read eeprom */
3992 for (w_addr = 0, w_eeprom = (u16 *)eeprom; w_addr < 64;
3993 w_addr++, w_eeprom++)
3995 if (cksum != 0x1234) {
3997 * Checksum is wrong.
3998 * Load a set of defaults into the eeprom buffer
4000 dprintkl(KERN_WARNING,
4001 "EEProm checksum error: using default values and options.\n");
4002 eeprom->sub_vendor_id[0] = (u8)PCI_VENDOR_ID_TEKRAM;
4003 eeprom->sub_vendor_id[1] = (u8)(PCI_VENDOR_ID_TEKRAM >> 8);
4004 eeprom->sub_sys_id[0] = (u8)PCI_DEVICE_ID_TEKRAM_TRMS1040;
4005 eeprom->sub_sys_id[1] =
4006 (u8)(PCI_DEVICE_ID_TEKRAM_TRMS1040 >> 8);
4007 eeprom->sub_class = 0x00;
4008 eeprom->vendor_id[0] = (u8)PCI_VENDOR_ID_TEKRAM;
4009 eeprom->vendor_id[1] = (u8)(PCI_VENDOR_ID_TEKRAM >> 8);
4010 eeprom->device_id[0] = (u8)PCI_DEVICE_ID_TEKRAM_TRMS1040;
4011 eeprom->device_id[1] =
4012 (u8)(PCI_DEVICE_ID_TEKRAM_TRMS1040 >> 8);
4013 eeprom->reserved = 0x00;
4015 for (d_addr = 0, d_eeprom = (u32 *)eeprom->target;
4016 d_addr < 16; d_addr++, d_eeprom++)
4017 *d_eeprom = 0x00000077; /* cfg3,cfg2,period,cfg0 */
4019 *d_eeprom++ = 0x04000F07; /* max_tag,delay_time,channel_cfg,scsi_id */
4020 *d_eeprom++ = 0x00000015; /* reserved1,boot_lun,boot_target,reserved0 */
4021 for (d_addr = 0; d_addr < 12; d_addr++, d_eeprom++)
4024 /* Now load defaults (maybe set by boot/module params) */
4025 set_safe_settings();
4027 eeprom_override(eeprom);
4029 eeprom->cksum = 0x00;
4030 for (w_addr = 0, cksum = 0, w_eeprom = (u16 *)eeprom;
4031 w_addr < 63; w_addr++, w_eeprom++)
4034 *w_eeprom = 0x1234 - cksum;
4035 trms1040_write_all(eeprom, io_port);
4036 eeprom->delay_time = cfg_data[CFG_RESET_DELAY].value;
4038 set_safe_settings();
4039 eeprom_index_to_delay(eeprom);
4040 eeprom_override(eeprom);
4046 * print_eeprom_settings - output the eeprom settings
4047 * to the kernel log so people can see what they were.
4049 * @eeprom: The eeprom data strucutre to show details for.
4051 static void print_eeprom_settings(struct NvRamType *eeprom)
4053 dprintkl(KERN_INFO, "Used settings: AdapterID=%02i, Speed=%i(%02i.%01iMHz), dev_mode=0x%02x\n",
4055 eeprom->target[0].period,
4056 clock_speed[eeprom->target[0].period] / 10,
4057 clock_speed[eeprom->target[0].period] % 10,
4058 eeprom->target[0].cfg0);
4059 dprintkl(KERN_INFO, " AdaptMode=0x%02x, Tags=%i(%02i), DelayReset=%is\n",
4060 eeprom->channel_cfg, eeprom->max_tag,
4061 1 << eeprom->max_tag, eeprom->delay_time);
4065 /* Free SG tables */
4066 static void adapter_sg_tables_free(struct AdapterCtlBlk *acb)
4069 const unsigned srbs_per_page = PAGE_SIZE/SEGMENTX_LEN;
4071 for (i = 0; i < DC395x_MAX_SRB_CNT; i += srbs_per_page)
4072 kfree(acb->srb_array[i].segment_x);
4077 * Allocate SG tables; as we have to pci_map them, an SG list (struct SGentry*)
4078 * should never cross a page boundary */
4079 static int adapter_sg_tables_alloc(struct AdapterCtlBlk *acb)
4081 const unsigned mem_needed = (DC395x_MAX_SRB_CNT+1)
4083 int pages = (mem_needed+(PAGE_SIZE-1))/PAGE_SIZE;
4084 const unsigned srbs_per_page = PAGE_SIZE/SEGMENTX_LEN;
4087 struct SGentry *ptr;
4089 for (i = 0; i < DC395x_MAX_SRB_CNT; i++)
4090 acb->srb_array[i].segment_x = NULL;
4092 dprintkdbg(DBG_1, "Allocate %i pages for SG tables\n", pages);
4094 ptr = kmalloc(PAGE_SIZE, GFP_KERNEL);
4096 adapter_sg_tables_free(acb);
4099 dprintkdbg(DBG_1, "Allocate %li bytes at %p for SG segments %i\n",
4100 PAGE_SIZE, ptr, srb_idx);
4102 while (i < srbs_per_page && srb_idx < DC395x_MAX_SRB_CNT)
4103 acb->srb_array[srb_idx++].segment_x =
4104 ptr + (i++ * DC395x_MAX_SG_LISTENTRY);
4106 if (i < srbs_per_page)
4107 acb->srb.segment_x =
4108 ptr + (i * DC395x_MAX_SG_LISTENTRY);
4110 dprintkl(KERN_DEBUG, "No space for tmsrb SG table reserved?!\n");
4117 * adapter_print_config - print adapter connection and termination
4120 * The io port in the adapter needs to have been set before calling
4123 * @acb: The adapter to print the information for.
4125 static void adapter_print_config(struct AdapterCtlBlk *acb)
4129 bval = DC395x_read8(acb, TRM_S1040_GEN_STATUS);
4130 dprintkl(KERN_INFO, "%sConnectors: ",
4131 ((bval & WIDESCSI) ? "(Wide) " : ""));
4132 if (!(bval & CON5068))
4133 printk("ext%s ", !(bval & EXT68HIGH) ? "68" : "50");
4134 if (!(bval & CON68))
4135 printk("int68%s ", !(bval & INT68HIGH) ? "" : "(50)");
4136 if (!(bval & CON50))
4138 if ((bval & (CON5068 | CON50 | CON68)) ==
4139 0 /*(CON5068 | CON50 | CON68) */ )
4140 printk(" Oops! (All 3?) ");
4141 bval = DC395x_read8(acb, TRM_S1040_GEN_CONTROL);
4142 printk(" Termination: ");
4143 if (bval & DIS_TERM)
4144 printk("Disabled\n");
4146 if (bval & AUTOTERM)
4148 if (bval & LOW8TERM)
4158 * adapter_init_params - Initialize the various parameters in the
4159 * adapter structure. Note that the pointer to the scsi_host is set
4160 * early (when this instance is created) and the io_port and irq
4161 * values are set later after they have been reserved. This just gets
4162 * everything set to a good starting position.
4164 * The eeprom structure in the adapter needs to have been set before
4165 * calling this function.
4167 * @acb: The adapter to initialize.
4169 static void adapter_init_params(struct AdapterCtlBlk *acb)
4171 struct NvRamType *eeprom = &acb->eeprom;
4174 /* NOTE: acb->scsi_host is set at scsi_host/acb creation time */
4175 /* NOTE: acb->io_port_base is set at port registration time */
4176 /* NOTE: acb->io_port_len is set at port registration time */
4178 INIT_LIST_HEAD(&acb->dcb_list);
4179 acb->dcb_run_robin = NULL;
4180 acb->active_dcb = NULL;
4182 INIT_LIST_HEAD(&acb->srb_free_list);
4183 /* temp SRB for Q tag used or abort command used */
4184 acb->tmp_srb = &acb->srb;
4185 timer_setup(&acb->waiting_timer, waiting_timeout, 0);
4186 timer_setup(&acb->selto_timer, NULL, 0);
4188 acb->srb_count = DC395x_MAX_SRB_CNT;
4190 acb->sel_timeout = DC395x_SEL_TIMEOUT; /* timeout=250ms */
4191 /* NOTE: acb->irq_level is set at IRQ registration time */
4193 acb->tag_max_num = 1 << eeprom->max_tag;
4194 if (acb->tag_max_num > 30)
4195 acb->tag_max_num = 30;
4197 acb->acb_flag = 0; /* RESET_DETECT, RESET_DONE, RESET_DEV */
4198 acb->gmode2 = eeprom->channel_cfg;
4199 acb->config = 0; /* NOTE: actually set in adapter_init_chip */
4201 if (eeprom->channel_cfg & NAC_SCANLUN)
4203 acb->scan_devices = 1;
4205 acb->scsi_host->this_id = eeprom->scsi_id;
4206 acb->hostid_bit = (1 << acb->scsi_host->this_id);
4208 for (i = 0; i < DC395x_MAX_SCSI_ID; i++)
4209 acb->dcb_map[i] = 0;
4213 /* link static array of srbs into the srb free list */
4214 for (i = 0; i < acb->srb_count - 1; i++)
4215 list_add_tail(&acb->srb_array[i].list, &acb->srb_free_list);
4220 * adapter_init_scsi_host - Initialize the scsi host instance based on
4221 * values that we have already stored in the adapter instance. There's
4222 * some mention that a lot of these are deprecated, so we won't use
4223 * them (we'll use the ones in the adapter instance) but we'll fill
4224 * them in in case something else needs them.
4226 * The eeprom structure, irq and io ports in the adapter need to have
4227 * been set before calling this function.
4229 * @host: The scsi host instance to fill in the values for.
4231 static void adapter_init_scsi_host(struct Scsi_Host *host)
4233 struct AdapterCtlBlk *acb = (struct AdapterCtlBlk *)host->hostdata;
4234 struct NvRamType *eeprom = &acb->eeprom;
4236 host->max_cmd_len = 24;
4237 host->can_queue = DC395x_MAX_CMD_QUEUE;
4238 host->cmd_per_lun = DC395x_MAX_CMD_PER_LUN;
4239 host->this_id = (int)eeprom->scsi_id;
4240 host->io_port = acb->io_port_base;
4241 host->n_io_port = acb->io_port_len;
4242 host->dma_channel = -1;
4243 host->unique_id = acb->io_port_base;
4244 host->irq = acb->irq_level;
4245 acb->last_reset = jiffies;
4248 if (host->max_id - 1 == eeprom->scsi_id)
4251 if (eeprom->channel_cfg & NAC_SCANLUN)
4259 * adapter_init_chip - Get the chip into a know state and figure out
4260 * some of the settings that apply to this adapter.
4262 * The io port in the adapter needs to have been set before calling
4263 * this function. The config will be configured correctly on return.
4265 * @acb: The adapter which we are to init.
4267 static void adapter_init_chip(struct AdapterCtlBlk *acb)
4269 struct NvRamType *eeprom = &acb->eeprom;
4271 /* Mask all the interrupt */
4272 DC395x_write8(acb, TRM_S1040_DMA_INTEN, 0x00);
4273 DC395x_write8(acb, TRM_S1040_SCSI_INTEN, 0x00);
4275 /* Reset SCSI module */
4276 DC395x_write16(acb, TRM_S1040_SCSI_CONTROL, DO_RSTMODULE);
4278 /* Reset PCI/DMA module */
4279 DC395x_write8(acb, TRM_S1040_DMA_CONTROL, DMARESETMODULE);
4282 /* program configuration 0 */
4283 acb->config = HCC_AUTOTERM | HCC_PARITY;
4284 if (DC395x_read8(acb, TRM_S1040_GEN_STATUS) & WIDESCSI)
4285 acb->config |= HCC_WIDE_CARD;
4287 if (eeprom->channel_cfg & NAC_POWERON_SCSI_RESET)
4288 acb->config |= HCC_SCSI_RESET;
4290 if (acb->config & HCC_SCSI_RESET) {
4291 dprintkl(KERN_INFO, "Performing initial SCSI bus reset\n");
4292 DC395x_write8(acb, TRM_S1040_SCSI_CONTROL, DO_RSTSCSI);
4294 /*while (!( DC395x_read8(acb, TRM_S1040_SCSI_INTSTATUS) & INT_SCSIRESET )); */
4295 /*spin_unlock_irq (&io_request_lock); */
4300 HZ * acb->eeprom.delay_time;
4302 /*spin_lock_irq (&io_request_lock); */
4308 * adapter_init - Grab the resource for the card, setup the adapter
4309 * information, set the card into a known state, create the various
4310 * tables etc etc. This basically gets all adapter information all up
4311 * to date, initialised and gets the chip in sync with it.
4313 * @acb: The adapter which we are to init.
4314 * @io_port: The base I/O port
4315 * @io_port_len: The I/O port size
4318 * Returns 0 if the initialization succeeds, any other value on
4321 static int adapter_init(struct AdapterCtlBlk *acb, unsigned long io_port,
4322 u32 io_port_len, unsigned int irq)
4324 if (!request_region(io_port, io_port_len, DC395X_NAME)) {
4325 dprintkl(KERN_ERR, "Failed to reserve IO region 0x%lx\n", io_port);
4328 /* store port base to indicate we have registered it */
4329 acb->io_port_base = io_port;
4330 acb->io_port_len = io_port_len;
4332 if (request_irq(irq, dc395x_interrupt, IRQF_SHARED, DC395X_NAME, acb)) {
4333 /* release the region we just claimed */
4334 dprintkl(KERN_INFO, "Failed to register IRQ\n");
4337 /* store irq to indicate we have registered it */
4338 acb->irq_level = irq;
4340 /* get eeprom configuration information and command line settings etc */
4341 check_eeprom(&acb->eeprom, io_port);
4342 print_eeprom_settings(&acb->eeprom);
4344 /* setup adapter control block */
4345 adapter_init_params(acb);
4347 /* display card connectors/termination settings */
4348 adapter_print_config(acb);
4350 if (adapter_sg_tables_alloc(acb)) {
4351 dprintkl(KERN_DEBUG, "Memory allocation for SG tables failed\n");
4354 adapter_init_scsi_host(acb->scsi_host);
4355 adapter_init_chip(acb);
4356 set_basic_config(acb);
4359 "adapter_init: acb=%p, pdcb_map=%p psrb_array=%p "
4360 "size{acb=0x%04x dcb=0x%04x srb=0x%04x}\n",
4361 acb, acb->dcb_map, acb->srb_array, sizeof(struct AdapterCtlBlk),
4362 sizeof(struct DeviceCtlBlk), sizeof(struct ScsiReqBlk));
4367 free_irq(acb->irq_level, acb);
4368 if (acb->io_port_base)
4369 release_region(acb->io_port_base, acb->io_port_len);
4370 adapter_sg_tables_free(acb);
4377 * adapter_uninit_chip - cleanly shut down the scsi controller chip,
4378 * stopping all operations and disabling interrupt generation on the
4381 * @acb: The adapter which we are to shutdown.
4383 static void adapter_uninit_chip(struct AdapterCtlBlk *acb)
4385 /* disable interrupts */
4386 DC395x_write8(acb, TRM_S1040_DMA_INTEN, 0);
4387 DC395x_write8(acb, TRM_S1040_SCSI_INTEN, 0);
4389 /* reset the scsi bus */
4390 if (acb->config & HCC_SCSI_RESET)
4391 reset_scsi_bus(acb);
4393 /* clear any pending interrupt state */
4394 DC395x_read8(acb, TRM_S1040_SCSI_INTSTATUS);
4400 * adapter_uninit - Shut down the chip and release any resources that
4401 * we had allocated. Once this returns the adapter should not be used
4404 * @acb: The adapter which we are to un-initialize.
4406 static void adapter_uninit(struct AdapterCtlBlk *acb)
4408 unsigned long flags;
4409 DC395x_LOCK_IO(acb->scsi_host, flags);
4412 if (timer_pending(&acb->waiting_timer))
4413 del_timer(&acb->waiting_timer);
4414 if (timer_pending(&acb->selto_timer))
4415 del_timer(&acb->selto_timer);
4417 adapter_uninit_chip(acb);
4418 adapter_remove_and_free_all_devices(acb);
4419 DC395x_UNLOCK_IO(acb->scsi_host, flags);
4422 free_irq(acb->irq_level, acb);
4423 if (acb->io_port_base)
4424 release_region(acb->io_port_base, acb->io_port_len);
4426 adapter_sg_tables_free(acb);
4432 if (YN) seq_printf(m, " Yes ");\
4433 else seq_printf(m, " No ")
4435 static int dc395x_show_info(struct seq_file *m, struct Scsi_Host *host)
4437 struct AdapterCtlBlk *acb = (struct AdapterCtlBlk *)host->hostdata;
4439 struct DeviceCtlBlk *dcb;
4440 unsigned long flags;
4443 seq_puts(m, DC395X_BANNER " PCI SCSI Host Adapter\n"
4444 " Driver Version " DC395X_VERSION "\n");
4446 DC395x_LOCK_IO(acb->scsi_host, flags);
4448 seq_printf(m, "SCSI Host Nr %i, ", host->host_no);
4449 seq_printf(m, "DC395U/UW/F DC315/U %s\n",
4450 (acb->config & HCC_WIDE_CARD) ? "Wide" : "");
4451 seq_printf(m, "io_port_base 0x%04lx, ", acb->io_port_base);
4452 seq_printf(m, "irq_level 0x%04x, ", acb->irq_level);
4453 seq_printf(m, " SelTimeout %ims\n", (1638 * acb->sel_timeout) / 1000);
4455 seq_printf(m, "MaxID %i, MaxLUN %llu, ", host->max_id, host->max_lun);
4456 seq_printf(m, "AdapterID %i\n", host->this_id);
4458 seq_printf(m, "tag_max_num %i", acb->tag_max_num);
4459 /*seq_printf(m, ", DMA_Status %i\n", DC395x_read8(acb, TRM_S1040_DMA_STATUS)); */
4460 seq_printf(m, ", FilterCfg 0x%02x",
4461 DC395x_read8(acb, TRM_S1040_SCSI_CONFIG1));
4462 seq_printf(m, ", DelayReset %is\n", acb->eeprom.delay_time);
4463 /*seq_printf(m, "\n"); */
4465 seq_printf(m, "Nr of DCBs: %i\n", list_size(&acb->dcb_list));
4466 seq_printf(m, "Map of attached LUNs: %8ph\n", &acb->dcb_map[0]);
4467 seq_printf(m, " %8ph\n", &acb->dcb_map[8]);
4470 "Un ID LUN Prty Sync Wide DsCn SndS TagQ nego_period SyncFreq SyncOffs MaxCmd\n");
4473 list_for_each_entry(dcb, &acb->dcb_list, list) {
4475 seq_printf(m, "%02i %02i %02i ", dev, dcb->target_id,
4477 YESNO(dcb->dev_mode & NTC_DO_PARITY_CHK);
4478 YESNO(dcb->sync_offset);
4479 YESNO(dcb->sync_period & WIDE_SYNC);
4480 YESNO(dcb->dev_mode & NTC_DO_DISCONNECT);
4481 YESNO(dcb->dev_mode & NTC_DO_SEND_START);
4482 YESNO(dcb->sync_mode & EN_TAG_QUEUEING);
4483 nego_period = clock_period[dcb->sync_period & 0x07] << 2;
4484 if (dcb->sync_offset)
4485 seq_printf(m, " %03i ns ", nego_period);
4487 seq_printf(m, " (%03i ns)", (dcb->min_nego_period << 2));
4489 if (dcb->sync_offset & 0x0f) {
4490 spd = 1000 / (nego_period);
4491 spd1 = 1000 % (nego_period);
4492 spd1 = (spd1 * 10 + nego_period / 2) / (nego_period);
4493 seq_printf(m, " %2i.%1i M %02i ", spd, spd1,
4494 (dcb->sync_offset & 0x0f));
4498 /* Add more info ... */
4499 seq_printf(m, " %02i\n", dcb->max_command);
4503 if (timer_pending(&acb->waiting_timer))
4504 seq_puts(m, "Waiting queue timer running\n");
4508 list_for_each_entry(dcb, &acb->dcb_list, list) {
4509 struct ScsiReqBlk *srb;
4510 if (!list_empty(&dcb->srb_waiting_list))
4511 seq_printf(m, "DCB (%02i-%i): Waiting: %i:",
4512 dcb->target_id, dcb->target_lun,
4513 list_size(&dcb->srb_waiting_list));
4514 list_for_each_entry(srb, &dcb->srb_waiting_list, list)
4515 seq_printf(m, " %p", srb->cmd);
4516 if (!list_empty(&dcb->srb_going_list))
4517 seq_printf(m, "\nDCB (%02i-%i): Going : %i:",
4518 dcb->target_id, dcb->target_lun,
4519 list_size(&dcb->srb_going_list));
4520 list_for_each_entry(srb, &dcb->srb_going_list, list)
4521 seq_printf(m, " %p", srb->cmd);
4522 if (!list_empty(&dcb->srb_waiting_list) || !list_empty(&dcb->srb_going_list))
4526 if (debug_enabled(DBG_1)) {
4527 seq_printf(m, "DCB list for ACB %p:\n", acb);
4528 list_for_each_entry(dcb, &acb->dcb_list, list) {
4529 seq_printf(m, "%p -> ", dcb);
4531 seq_puts(m, "END\n");
4534 DC395x_UNLOCK_IO(acb->scsi_host, flags);
4539 static struct scsi_host_template dc395x_driver_template = {
4540 .module = THIS_MODULE,
4541 .proc_name = DC395X_NAME,
4542 .show_info = dc395x_show_info,
4543 .name = DC395X_BANNER " " DC395X_VERSION,
4544 .queuecommand = dc395x_queue_command,
4545 .slave_alloc = dc395x_slave_alloc,
4546 .slave_destroy = dc395x_slave_destroy,
4547 .can_queue = DC395x_MAX_CAN_QUEUE,
4549 .sg_tablesize = DC395x_MAX_SG_TABLESIZE,
4550 .cmd_per_lun = DC395x_MAX_CMD_PER_LUN,
4551 .eh_abort_handler = dc395x_eh_abort,
4552 .eh_bus_reset_handler = dc395x_eh_bus_reset,
4553 .dma_boundary = PAGE_SIZE - 1,
4558 * banner_display - Display banner on first instance of driver
4561 static void banner_display(void)
4563 static int banner_done = 0;
4566 dprintkl(KERN_INFO, "%s %s\n", DC395X_BANNER, DC395X_VERSION);
4573 * dc395x_init_one - Initialise a single instance of the adapter.
4575 * The PCI layer will call this once for each instance of the adapter
4576 * that it finds in the system. The pci_dev strcuture indicates which
4577 * instance we are being called from.
4579 * @dev: The PCI device to initialize.
4580 * @id: Looks like a pointer to the entry in our pci device table
4581 * that was actually matched by the PCI subsystem.
4583 * Returns 0 on success, or an error code (-ve) on failure.
4585 static int dc395x_init_one(struct pci_dev *dev, const struct pci_device_id *id)
4587 struct Scsi_Host *scsi_host = NULL;
4588 struct AdapterCtlBlk *acb = NULL;
4589 unsigned long io_port_base;
4590 unsigned int io_port_len;
4593 dprintkdbg(DBG_0, "Init one instance (%s)\n", pci_name(dev));
4596 if (pci_enable_device(dev))
4598 dprintkl(KERN_INFO, "PCI Enable device failed.\n");
4601 io_port_base = pci_resource_start(dev, 0) & PCI_BASE_ADDRESS_IO_MASK;
4602 io_port_len = pci_resource_len(dev, 0);
4604 dprintkdbg(DBG_0, "IO_PORT=0x%04lx, IRQ=0x%x\n", io_port_base, dev->irq);
4606 /* allocate scsi host information (includes out adapter) */
4607 scsi_host = scsi_host_alloc(&dc395x_driver_template,
4608 sizeof(struct AdapterCtlBlk));
4610 dprintkl(KERN_INFO, "scsi_host_alloc failed\n");
4613 acb = (struct AdapterCtlBlk*)scsi_host->hostdata;
4614 acb->scsi_host = scsi_host;
4617 /* initialise the adapter and everything we need */
4618 if (adapter_init(acb, io_port_base, io_port_len, irq)) {
4619 dprintkl(KERN_INFO, "adapter init failed\n");
4624 pci_set_master(dev);
4626 /* get the scsi mid level to scan for new devices on the bus */
4627 if (scsi_add_host(scsi_host, &dev->dev)) {
4628 dprintkl(KERN_ERR, "scsi_add_host failed\n");
4631 pci_set_drvdata(dev, scsi_host);
4632 scsi_scan_host(scsi_host);
4638 adapter_uninit(acb);
4639 if (scsi_host != NULL)
4640 scsi_host_put(scsi_host);
4641 pci_disable_device(dev);
4647 * dc395x_remove_one - Called to remove a single instance of the
4650 * @dev: The PCI device to initialize.
4652 static void dc395x_remove_one(struct pci_dev *dev)
4654 struct Scsi_Host *scsi_host = pci_get_drvdata(dev);
4655 struct AdapterCtlBlk *acb = (struct AdapterCtlBlk *)(scsi_host->hostdata);
4657 dprintkdbg(DBG_0, "dc395x_remove_one: acb=%p\n", acb);
4659 scsi_remove_host(scsi_host);
4660 adapter_uninit(acb);
4661 pci_disable_device(dev);
4662 scsi_host_put(scsi_host);
4666 static struct pci_device_id dc395x_pci_table[] = {
4668 .vendor = PCI_VENDOR_ID_TEKRAM,
4669 .device = PCI_DEVICE_ID_TEKRAM_TRMS1040,
4670 .subvendor = PCI_ANY_ID,
4671 .subdevice = PCI_ANY_ID,
4673 {} /* Terminating entry */
4675 MODULE_DEVICE_TABLE(pci, dc395x_pci_table);
4678 static struct pci_driver dc395x_driver = {
4679 .name = DC395X_NAME,
4680 .id_table = dc395x_pci_table,
4681 .probe = dc395x_init_one,
4682 .remove = dc395x_remove_one,
4684 module_pci_driver(dc395x_driver);
4686 MODULE_AUTHOR("C.L. Huang / Erich Chen / Kurt Garloff");
4687 MODULE_DESCRIPTION("SCSI host adapter driver for Tekram TRM-S1040 based adapters: Tekram DC395 and DC315 series");
4688 MODULE_LICENSE("GPL");