2 Low Level Linux Driver for the IBM Microchannel SCSI Subsystem for
4 Copyright (c) 1995 Strom Systems, Inc. under the terms of the GNU
5 General Public License. Written by Martin Kolinek, December 1995.
6 Further development by: Chris Beauregard, Klaus Kudielka, Michael Lang
7 See the file Documentation/scsi/ibmmca.txt for a detailed description
8 of this driver, the commandline arguments and the history of its
10 See the WWW-page: http://www.uni-mainz.de/~langm000/linux.html for latest
11 updates, info and ADF-files for adapters supported by this driver.
13 Alan Cox <alan@lxorguk.ukuu.org.uk>
14 Updated for Linux 2.5.45 to use the new error handler, cleaned up the
15 lock macros and did a few unavoidable locking tweaks, plus one locking
16 fix in the irq and completion path.
20 #include <linux/module.h>
21 #include <linux/kernel.h>
22 #include <linux/types.h>
23 #include <linux/ctype.h>
24 #include <linux/string.h>
25 #include <linux/interrupt.h>
26 #include <linux/ioport.h>
27 #include <linux/delay.h>
28 #include <linux/blkdev.h>
29 #include <linux/proc_fs.h>
30 #include <linux/stat.h>
31 #include <linux/mca.h>
32 #include <linux/spinlock.h>
33 #include <linux/init.h>
35 #include <asm/system.h>
39 #include <scsi/scsi_host.h>
41 /* Common forward declarations for all Linux-versions: */
42 static int ibmmca_queuecommand (Scsi_Cmnd
*, void (*done
) (Scsi_Cmnd
*));
43 static int ibmmca_abort (Scsi_Cmnd
*);
44 static int ibmmca_host_reset (Scsi_Cmnd
*);
45 static int ibmmca_biosparam (struct scsi_device
*, struct block_device
*, sector_t
, int *);
46 static int ibmmca_proc_info(struct Scsi_Host
*shpnt
, char *buffer
, char **start
, off_t offset
, int length
, int inout
);
50 /* current version of this driver-source: */
51 #define IBMMCA_SCSI_DRIVER_VERSION "4.0b-ac"
53 /* driver configuration */
54 #define IM_MAX_HOSTS 8 /* maximum number of host adapters */
55 #define IM_RESET_DELAY 60 /* seconds allowed for a reset */
57 /* driver debugging - #undef all for normal operation */
58 /* if defined: count interrupts and ignore this special one: */
59 #undef IM_DEBUG_TIMEOUT //50
62 /* verbose interrupt: */
64 /* verbose queuecommand: */
66 /* verbose queucommand for specific SCSI-device type: */
67 #undef IM_DEBUG_CMD_SPEC_DEV
68 /* verbose device probing */
71 /* device type that shall be displayed on syslog (only during debugging): */
72 #define IM_DEBUG_CMD_DEVICE TYPE_TAPE
74 /* relative addresses of hardware registers on a subsystem */
75 #define IM_CMD_REG(h) ((h)->io_port) /*Command Interface, (4 bytes long) */
76 #define IM_ATTN_REG(h) ((h)->io_port+4) /*Attention (1 byte) */
77 #define IM_CTR_REG(h) ((h)->io_port+5) /*Basic Control (1 byte) */
78 #define IM_INTR_REG(h) ((h)->io_port+6) /*Interrupt Status (1 byte, r/o) */
79 #define IM_STAT_REG(h) ((h)->io_port+7) /*Basic Status (1 byte, read only) */
81 /* basic I/O-port of first adapter */
82 #define IM_IO_PORT 0x3540
83 /* maximum number of hosts that can be found */
84 #define IM_N_IO_PORT 8
86 /*requests going into the upper nibble of the Attention register */
87 /*note: the lower nibble specifies the device(0-14), or subsystem(15) */
88 #define IM_IMM_CMD 0x10 /*immediate command */
89 #define IM_SCB 0x30 /*Subsystem Control Block command */
90 #define IM_LONG_SCB 0x40 /*long Subsystem Control Block command */
91 #define IM_EOI 0xe0 /*end-of-interrupt request */
93 /*values for bits 7,1,0 of Basic Control reg. (bits 6-2 reserved) */
94 #define IM_HW_RESET 0x80 /*hardware reset */
95 #define IM_ENABLE_DMA 0x02 /*enable subsystem's busmaster DMA */
96 #define IM_ENABLE_INTR 0x01 /*enable interrupts to the system */
98 /*to interpret the upper nibble of Interrupt Status register */
99 /*note: the lower nibble specifies the device(0-14), or subsystem(15) */
100 #define IM_SCB_CMD_COMPLETED 0x10
101 #define IM_SCB_CMD_COMPLETED_WITH_RETRIES 0x50
102 #define IM_LOOP_SCATTER_BUFFER_FULL 0x60
103 #define IM_ADAPTER_HW_FAILURE 0x70
104 #define IM_IMMEDIATE_CMD_COMPLETED 0xa0
105 #define IM_CMD_COMPLETED_WITH_FAILURE 0xc0
106 #define IM_CMD_ERROR 0xe0
107 #define IM_SOFTWARE_SEQUENCING_ERROR 0xf0
109 /*to interpret bits 3-0 of Basic Status register (bits 7-4 reserved) */
110 #define IM_CMD_REG_FULL 0x08
111 #define IM_CMD_REG_EMPTY 0x04
112 #define IM_INTR_REQUEST 0x02
115 /*immediate commands (word written into low 2 bytes of command reg) */
116 #define IM_RESET_IMM_CMD 0x0400
117 #define IM_FEATURE_CTR_IMM_CMD 0x040c
118 #define IM_DMA_PACING_IMM_CMD 0x040d
119 #define IM_ASSIGN_IMM_CMD 0x040e
120 #define IM_ABORT_IMM_CMD 0x040f
121 #define IM_FORMAT_PREP_IMM_CMD 0x0417
123 /*SCB (Subsystem Control Block) structure */
125 unsigned short command
; /*command word (read, etc.) */
126 unsigned short enable
; /*enable word, modifies cmd */
128 unsigned long log_blk_adr
; /*block address on SCSI device */
129 unsigned char scsi_cmd_length
; /*6,10,12, for other scsi cmd */
131 unsigned long sys_buf_adr
; /*physical system memory adr */
132 unsigned long sys_buf_length
; /*size of sys mem buffer */
133 unsigned long tsb_adr
; /*Termination Status Block adr */
134 unsigned long scb_chain_adr
; /*optional SCB chain address */
137 unsigned short count
; /*block count, on SCSI device */
138 unsigned short length
; /*block length, on SCSI device */
140 unsigned char scsi_command
[12]; /*other scsi command */
144 /*structure scatter-gather element (for list of system memory areas) */
147 unsigned long byte_length
;
150 /*structure returned by a get_pos_info command: */
152 unsigned short pos_id
; /* adapter id */
153 unsigned char pos_3a
; /* pos 3 (if pos 6 = 0) */
154 unsigned char pos_2
; /* pos 2 */
155 unsigned char int_level
; /* interrupt level IRQ 11 or 14 */
156 unsigned char pos_4a
; /* pos 4 (if pos 6 = 0) */
157 unsigned short connector_size
; /* MCA connector size: 16 or 32 Bit */
158 unsigned char num_luns
; /* number of supported luns per device */
159 unsigned char num_puns
; /* number of supported puns */
160 unsigned char pacing_factor
; /* pacing factor */
161 unsigned char num_ldns
; /* number of ldns available */
162 unsigned char eoi_off
; /* time EOI and interrupt inactive */
163 unsigned char max_busy
; /* time between reset and busy on */
164 unsigned short cache_stat
; /* ldn cachestat. Bit=1 = not cached */
165 unsigned short retry_stat
; /* retry status of ldns. Bit=1=disabled */
166 unsigned char pos_4b
; /* pos 4 (if pos 6 = 1) */
167 unsigned char pos_3b
; /* pos 3 (if pos 6 = 1) */
168 unsigned char pos_6
; /* pos 6 */
169 unsigned char pos_5
; /* pos 5 */
170 unsigned short max_overlap
; /* maximum overlapping requests */
171 unsigned short num_bus
; /* number of SCSI-busses */
174 /*values for SCB command word */
175 #define IM_NO_SYNCHRONOUS 0x0040 /*flag for any command */
176 #define IM_NO_DISCONNECT 0x0080 /*flag for any command */
177 #define IM_READ_DATA_CMD 0x1c01
178 #define IM_WRITE_DATA_CMD 0x1c02
179 #define IM_READ_VERIFY_CMD 0x1c03
180 #define IM_WRITE_VERIFY_CMD 0x1c04
181 #define IM_REQUEST_SENSE_CMD 0x1c08
182 #define IM_READ_CAPACITY_CMD 0x1c09
183 #define IM_DEVICE_INQUIRY_CMD 0x1c0b
184 #define IM_READ_LOGICAL_CMD 0x1c2a
185 #define IM_OTHER_SCSI_CMD_CMD 0x241f
187 /* unused, but supported, SCB commands */
188 #define IM_GET_COMMAND_COMPLETE_STATUS_CMD 0x1c07 /* command status */
189 #define IM_GET_POS_INFO_CMD 0x1c0a /* returns neat stuff */
190 #define IM_READ_PREFETCH_CMD 0x1c31 /* caching controller only */
191 #define IM_FOMAT_UNIT_CMD 0x1c16 /* format unit */
192 #define IM_REASSIGN_BLOCK_CMD 0x1c18 /* in case of error */
194 /*values to set bits in the enable word of SCB */
195 #define IM_READ_CONTROL 0x8000
196 #define IM_REPORT_TSB_ONLY_ON_ERROR 0x4000
197 #define IM_RETRY_ENABLE 0x2000
198 #define IM_POINTER_TO_LIST 0x1000
199 #define IM_SUPRESS_EXCEPTION_SHORT 0x0400
200 #define IM_BYPASS_BUFFER 0x0200
201 #define IM_CHAIN_ON_NO_ERROR 0x0001
203 /*TSB (Termination Status Block) structure */
205 unsigned short end_status
;
206 unsigned short reserved1
;
207 unsigned long residual_byte_count
;
208 unsigned long sg_list_element_adr
;
209 unsigned short status_length
;
210 unsigned char dev_status
;
211 unsigned char cmd_status
;
212 unsigned char dev_error
;
213 unsigned char cmd_error
;
214 unsigned short reserved2
;
215 unsigned short reserved3
;
216 unsigned short low_of_last_scb_adr
;
217 unsigned short high_of_last_scb_adr
;
220 /*subsystem uses interrupt request level 14 */
222 /*SCSI-2 F/W may evade to interrupt 11 */
225 /* Model 95 has an additional alphanumeric display, which can be used
226 to display SCSI-activities. 8595 models do not have any disk led, which
227 makes this feature quite useful.
228 The regular PS/2 disk led is turned on/off by bits 6,7 of system
231 /* LED display-port (actually, last LED on display) */
232 #define MOD95_LED_PORT 0x108
233 /* system-control-register of PS/2s with diskindicator */
234 #define PS2_SYS_CTR 0x92
235 /* activity displaying methods */
238 #define LED_ACTIVITY 4
242 /* The SCSI-ID(!) of the accessed SCSI-device is shown on PS/2-95 machines' LED
243 displays. ldn is no longer displayed here, because the ldn mapping is now
244 done dynamically and the ldn <-> pun,lun maps can be looked-up at boottime
245 or during uptime in /proc/scsi/ibmmca/<host_no> in case of trouble,
246 interest, debugging or just for having fun. The left number gives the
247 host-adapter number and the right shows the accessed SCSI-ID. */
249 /* display_mode is set by the ibmmcascsi= command line arg */
250 static int display_mode
= 0;
251 /* set default adapter timeout */
252 static unsigned int adapter_timeout
= 45;
253 /* for probing on feature-command: */
254 static unsigned int global_command_error_excuse
= 0;
255 /* global setting by command line for adapter_speed */
256 static int global_adapter_speed
= 0; /* full speed by default */
258 /* Panel / LED on, do it right for F/W addressin, too. adisplay will
259 * just ignore ids>7, as the panel has only 7 digits available */
260 #define PS2_DISK_LED_ON(ad,id) { if (display_mode & LED_DISP) { if (id>9) \
261 outw((ad+48)|((id+55)<<8), MOD95_LED_PORT ); else \
262 outw((ad+48)|((id+48)<<8), MOD95_LED_PORT ); } else \
263 if (display_mode & LED_ADISP) { if (id<7) outb((char)(id+48),MOD95_LED_PORT+1+id); \
264 outb((char)(ad+48), MOD95_LED_PORT); } \
265 if ((display_mode & LED_ACTIVITY)||(!display_mode)) \
266 outb(inb(PS2_SYS_CTR) | 0xc0, PS2_SYS_CTR); }
268 /* Panel / LED off */
269 /* bug fixed, Dec 15, 1997, where | was replaced by & here */
270 #define PS2_DISK_LED_OFF() { if (display_mode & LED_DISP) \
271 outw(0x2020, MOD95_LED_PORT ); else if (display_mode & LED_ADISP) { \
272 outl(0x20202020,MOD95_LED_PORT); outl(0x20202020,MOD95_LED_PORT+4); } \
273 if ((display_mode & LED_ACTIVITY)||(!display_mode)) \
274 outb(inb(PS2_SYS_CTR) & 0x3f, PS2_SYS_CTR); }
276 /* types of different supported hardware that goes to hostdata special */
277 #define IBM_SCSI2_FW 0
278 #define IBM_7568_WCACHE 1
279 #define IBM_EXP_UNIT 2
280 #define IBM_SCSI_WCACHE 3
282 #define IBM_INTEGSCSI 5
284 /* other special flags for hostdata structure */
285 #define FORCED_DETECTION 100
286 #define INTEGRATED_SCSI 101
288 /* List of possible IBM-SCSI-adapters */
289 static short ibmmca_id_table
[] = {
295 /* No entry for integrated SCSI, that's part of the register */
299 static const char *ibmmca_description
[] = {
300 "IBM SCSI-2 F/W Adapter", /* special = 0 */
301 "IBM 7568 Industrial Computer SCSI Adapter w/Cache", /* special = 1 */
302 "IBM Expansion Unit SCSI Controller", /* special = 2 */
303 "IBM SCSI Adapter w/Cache", /* special = 3 */
304 "IBM SCSI Adapter", /* special = 4 */
305 "IBM Integrated SCSI Controller", /* special = 5 */
308 /* Max number of logical devices (can be up from 0 to 14). 15 is the address
309 of the adapter itself. */
310 #define MAX_LOG_DEV 15
312 /*local data for a logical device */
313 struct logical_device
{
314 struct im_scb scb
; /* SCSI-subsystem-control-block structure */
315 struct im_tsb tsb
; /* SCSI command complete status block structure */
316 struct im_sge sge
[16]; /* scatter gather list structure */
317 unsigned char buf
[256]; /* SCSI command return data buffer */
318 Scsi_Cmnd
*cmd
; /* SCSI-command that is currently in progress */
319 int device_type
; /* type of the SCSI-device. See include/scsi/scsi.h
320 for interpretation of the possible values */
321 int block_length
; /* blocksize of a particular logical SCSI-device */
322 int cache_flag
; /* 1 if this is uncached, 0 if cache is present for ldn */
323 int retry_flag
; /* 1 if adapter retry is disabled, 0 if enabled */
326 /* statistics of the driver during operations (for proc_info) */
327 struct Driver_Statistics
{
328 /* SCSI statistics on the adapter */
329 int ldn_access
[MAX_LOG_DEV
+ 1]; /* total accesses on a ldn */
330 int ldn_read_access
[MAX_LOG_DEV
+ 1]; /* total read-access on a ldn */
331 int ldn_write_access
[MAX_LOG_DEV
+ 1]; /* total write-access on a ldn */
332 int ldn_inquiry_access
[MAX_LOG_DEV
+ 1]; /* total inquiries on a ldn */
333 int ldn_modeselect_access
[MAX_LOG_DEV
+ 1]; /* total mode selects on ldn */
334 int scbs
; /* short SCBs queued */
335 int long_scbs
; /* long SCBs queued */
336 int total_accesses
; /* total accesses on all ldns */
337 int total_interrupts
; /* total interrupts (should be
338 same as total_accesses) */
339 int total_errors
; /* command completed with error */
340 /* dynamical assignment statistics */
341 int total_scsi_devices
; /* number of physical pun,lun */
342 int dyn_flag
; /* flag showing dynamical mode */
343 int dynamical_assignments
; /* number of remappings of ldns */
344 int ldn_assignments
[MAX_LOG_DEV
+ 1]; /* number of remappings of each
348 /* data structure for each host adapter */
349 struct ibmmca_hostdata
{
350 /* array of logical devices: */
351 struct logical_device _ld
[MAX_LOG_DEV
+ 1];
352 /* array to convert (pun, lun) into logical device number: */
353 unsigned char _get_ldn
[16][8];
354 /*array that contains the information about the physical SCSI-devices
355 attached to this host adapter: */
356 unsigned char _get_scsi
[16][8];
357 /* used only when checking logical devices: */
358 int _local_checking_phase_flag
;
359 /* report received interrupt: */
361 /* report termination-status of SCSI-command: */
363 /* reset status (used only when doing reset): */
365 /* code of the last SCSI command (needed for panic info): */
366 int _last_scsi_command
[MAX_LOG_DEV
+ 1];
367 /* identifier of the last SCSI-command type */
368 int _last_scsi_type
[MAX_LOG_DEV
+ 1];
369 /* last blockcount */
370 int _last_scsi_blockcount
[MAX_LOG_DEV
+ 1];
371 /* last locgical block address */
372 unsigned long _last_scsi_logical_block
[MAX_LOG_DEV
+ 1];
373 /* Counter that points on the next reassignable ldn for dynamical
374 remapping. The default value is 7, that is the first reassignable
375 number in the list at boottime: */
377 /* Statistics-structure for this IBM-SCSI-host: */
378 struct Driver_Statistics _IBM_DS
;
379 /* This hostadapters pos-registers pos2 until pos6 */
380 unsigned int _pos
[8];
381 /* assign a special variable, that contains dedicated info about the
384 /* connector size on the MCA bus */
386 /* synchronous SCSI transfer rate bitpattern */
390 /* macros to access host data structure */
391 #define subsystem_pun(h) ((h)->this_id)
392 #define subsystem_maxid(h) ((h)->max_id)
393 #define ld(h) (((struct ibmmca_hostdata *) (h)->hostdata)->_ld)
394 #define get_ldn(h) (((struct ibmmca_hostdata *) (h)->hostdata)->_get_ldn)
395 #define get_scsi(h) (((struct ibmmca_hostdata *) (h)->hostdata)->_get_scsi)
396 #define local_checking_phase_flag(h) (((struct ibmmca_hostdata *) (h)->hostdata)->_local_checking_phase_flag)
397 #define got_interrupt(h) (((struct ibmmca_hostdata *) (h)->hostdata)->_got_interrupt)
398 #define stat_result(h) (((struct ibmmca_hostdata *) (h)->hostdata)->_stat_result)
399 #define reset_status(h) (((struct ibmmca_hostdata *) (h)->hostdata)->_reset_status)
400 #define last_scsi_command(h) (((struct ibmmca_hostdata *) (h)->hostdata)->_last_scsi_command)
401 #define last_scsi_type(h) (((struct ibmmca_hostdata *) (h)->hostdata)->_last_scsi_type)
402 #define last_scsi_blockcount(h) (((struct ibmmca_hostdata *) (h)->hostdata)->_last_scsi_blockcount)
403 #define last_scsi_logical_block(h) (((struct ibmmca_hostdata *) (h)->hostdata)->_last_scsi_logical_block)
404 #define last_scsi_type(h) (((struct ibmmca_hostdata *) (h)->hostdata)->_last_scsi_type)
405 #define next_ldn(h) (((struct ibmmca_hostdata *) (h)->hostdata)->_next_ldn)
406 #define IBM_DS(h) (((struct ibmmca_hostdata *) (h)->hostdata)->_IBM_DS)
407 #define special(h) (((struct ibmmca_hostdata *) (h)->hostdata)->_special)
408 #define subsystem_connector_size(h) (((struct ibmmca_hostdata *) (h)->hostdata)->_connector_size)
409 #define adapter_speed(h) (((struct ibmmca_hostdata *) (h)->hostdata)->_adapter_speed)
410 #define pos2(h) (((struct ibmmca_hostdata *) (h)->hostdata)->_pos[2])
411 #define pos3(h) (((struct ibmmca_hostdata *) (h)->hostdata)->_pos[3])
412 #define pos4(h) (((struct ibmmca_hostdata *) (h)->hostdata)->_pos[4])
413 #define pos5(h) (((struct ibmmca_hostdata *) (h)->hostdata)->_pos[5])
414 #define pos6(h) (((struct ibmmca_hostdata *) (h)->hostdata)->_pos[6])
416 /* Define a arbitrary number as subsystem-marker-type. This number is, as
417 described in the ANSI-SCSI-standard, not occupied by other device-types. */
418 #define TYPE_IBM_SCSI_ADAPTER 0x2F
420 /* Define 0xFF for no device type, because this type is not defined within
421 the ANSI-SCSI-standard, therefore, it can be used and should not cause any
423 #define TYPE_NO_DEVICE 0xFF
425 /* define medium-changer. If this is not defined previously, e.g. Linux
426 2.0.x, define this type here. */
427 #ifndef TYPE_MEDIUM_CHANGER
428 #define TYPE_MEDIUM_CHANGER 0x08
431 /* define possible operations for the immediate_assign command */
435 /* ldn which is used to probe the SCSI devices */
438 /* reset status flag contents */
439 #define IM_RESET_NOT_IN_PROGRESS 0
440 #define IM_RESET_IN_PROGRESS 1
441 #define IM_RESET_FINISHED_OK 2
442 #define IM_RESET_FINISHED_FAIL 3
443 #define IM_RESET_NOT_IN_PROGRESS_NO_INT 4
444 #define IM_RESET_FINISHED_OK_NO_INT 5
446 /* define undefined SCSI-command */
447 #define NO_SCSI 0xffff
449 /*-----------------------------------------------------------------------*/
451 /* if this is nonzero, ibmmcascsi option has been passed to the kernel */
452 static int io_port
[IM_MAX_HOSTS
] = { 0, 0, 0, 0, 0, 0, 0, 0 };
453 static int scsi_id
[IM_MAX_HOSTS
] = { 7, 7, 7, 7, 7, 7, 7, 7 };
455 /* fill module-parameters only, when this define is present.
456 (that is kernel version 2.1.x) */
458 static char *boot_options
= NULL
;
459 module_param(boot_options
, charp
, 0);
460 module_param_array(io_port
, int, NULL
, 0);
461 module_param_array(scsi_id
, int, NULL
, 0);
463 MODULE_LICENSE("GPL");
465 /*counter of concurrent disk read/writes, to turn on/off disk led */
466 static int disk_rw_in_progress
= 0;
468 static unsigned int pos
[8]; /* whole pos register-line for diagnosis */
469 /* Taking into account the additions, made by ZP Gu.
470 * This selects now the preset value from the configfile and
471 * offers the 'normal' commandline option to be accepted */
472 #ifdef CONFIG_IBMMCA_SCSI_ORDER_STANDARD
473 static char ibm_ansi_order
= 1;
475 static char ibm_ansi_order
= 0;
478 static void issue_cmd(struct Scsi_Host
*, unsigned long, unsigned char);
479 static void internal_done(Scsi_Cmnd
* cmd
);
480 static void check_devices(struct Scsi_Host
*, int);
481 static int immediate_assign(struct Scsi_Host
*, unsigned int, unsigned int, unsigned int, unsigned int);
482 static int immediate_feature(struct Scsi_Host
*, unsigned int, unsigned int);
483 #ifdef CONFIG_IBMMCA_SCSI_DEV_RESET
484 static int immediate_reset(struct Scsi_Host
*, unsigned int);
486 static int device_inquiry(struct Scsi_Host
*, int);
487 static int read_capacity(struct Scsi_Host
*, int);
488 static int get_pos_info(struct Scsi_Host
*);
489 static char *ti_p(int);
490 static char *ti_l(int);
491 static char *ibmrate(unsigned int, int);
492 static int probe_display(int);
493 static int probe_bus_mode(struct Scsi_Host
*);
494 static int device_exists(struct Scsi_Host
*, int, int *, int *);
495 static int option_setup(char *);
496 /* local functions needed for proc_info */
497 static int ldn_access_load(struct Scsi_Host
*, int);
498 static int ldn_access_total_read_write(struct Scsi_Host
*);
500 static irqreturn_t
interrupt_handler(int irq
, void *dev_id
)
502 unsigned int intr_reg
;
503 unsigned int cmd_result
;
508 struct device
*dev
= dev_id
;
509 struct Scsi_Host
*shpnt
= dev_get_drvdata(dev
);
511 spin_lock_irqsave(shpnt
->host_lock
, flags
);
513 if(!(inb(IM_STAT_REG(shpnt
)) & IM_INTR_REQUEST
)) {
514 spin_unlock_irqrestore(shpnt
->host_lock
, flags
);
518 /* the reset-function already did all the job, even ints got
519 renabled on the subsystem, so just return */
520 if ((reset_status(shpnt
) == IM_RESET_NOT_IN_PROGRESS_NO_INT
) || (reset_status(shpnt
) == IM_RESET_FINISHED_OK_NO_INT
)) {
521 reset_status(shpnt
) = IM_RESET_NOT_IN_PROGRESS
;
522 spin_unlock_irqrestore(shpnt
->host_lock
, flags
);
526 /*must wait for attention reg not busy, then send EOI to subsystem */
528 if (!(inb(IM_STAT_REG(shpnt
)) & IM_BUSY
))
533 /*get command result and logical device */
534 intr_reg
= (unsigned char) (inb(IM_INTR_REG(shpnt
)));
535 cmd_result
= intr_reg
& 0xf0;
536 ldn
= intr_reg
& 0x0f;
537 /* get the last_scsi_command here */
538 lastSCSI
= last_scsi_command(shpnt
)[ldn
];
539 outb(IM_EOI
| ldn
, IM_ATTN_REG(shpnt
));
541 /*these should never happen (hw fails, or a local programming bug) */
542 if (!global_command_error_excuse
) {
543 switch (cmd_result
) {
544 /* Prevent from Ooopsing on error to show the real reason */
545 case IM_ADAPTER_HW_FAILURE
:
546 case IM_SOFTWARE_SEQUENCING_ERROR
:
548 printk(KERN_ERR
"IBM MCA SCSI: Fatal Subsystem ERROR!\n");
549 printk(KERN_ERR
" Last cmd=0x%x, ena=%x, len=", lastSCSI
, ld(shpnt
)[ldn
].scb
.enable
);
550 if (ld(shpnt
)[ldn
].cmd
)
551 printk("%ld/%ld,", (long) (scsi_bufflen(ld(shpnt
)[ldn
].cmd
)), (long) (ld(shpnt
)[ldn
].scb
.sys_buf_length
));
554 if (ld(shpnt
)[ldn
].cmd
)
555 printk("Blocksize=%d", ld(shpnt
)[ldn
].scb
.u2
.blk
.length
);
557 printk("Blocksize=none");
558 printk(", host=%p, ldn=0x%x\n", shpnt
, ldn
);
559 if (ld(shpnt
)[ldn
].cmd
) {
560 printk(KERN_ERR
"Blockcount=%d/%d\n", last_scsi_blockcount(shpnt
)[ldn
], ld(shpnt
)[ldn
].scb
.u2
.blk
.count
);
561 printk(KERN_ERR
"Logical block=%lx/%lx\n", last_scsi_logical_block(shpnt
)[ldn
], ld(shpnt
)[ldn
].scb
.u1
.log_blk_adr
);
563 printk(KERN_ERR
"Reason given: %s\n", (cmd_result
== IM_ADAPTER_HW_FAILURE
) ? "HARDWARE FAILURE" : (cmd_result
== IM_SOFTWARE_SEQUENCING_ERROR
) ? "SOFTWARE SEQUENCING ERROR" : (cmd_result
== IM_CMD_ERROR
) ? "COMMAND ERROR" : "UNKNOWN");
564 /* if errors appear, enter this section to give detailed info */
565 printk(KERN_ERR
"IBM MCA SCSI: Subsystem Error-Status follows:\n");
566 printk(KERN_ERR
" Command Type................: %x\n", last_scsi_type(shpnt
)[ldn
]);
567 printk(KERN_ERR
" Attention Register..........: %x\n", inb(IM_ATTN_REG(shpnt
)));
568 printk(KERN_ERR
" Basic Control Register......: %x\n", inb(IM_CTR_REG(shpnt
)));
569 printk(KERN_ERR
" Interrupt Status Register...: %x\n", intr_reg
);
570 printk(KERN_ERR
" Basic Status Register.......: %x\n", inb(IM_STAT_REG(shpnt
)));
571 if ((last_scsi_type(shpnt
)[ldn
] == IM_SCB
) || (last_scsi_type(shpnt
)[ldn
] == IM_LONG_SCB
)) {
572 printk(KERN_ERR
" SCB-Command.................: %x\n", ld(shpnt
)[ldn
].scb
.command
);
573 printk(KERN_ERR
" SCB-Enable..................: %x\n", ld(shpnt
)[ldn
].scb
.enable
);
574 printk(KERN_ERR
" SCB-logical block address...: %lx\n", ld(shpnt
)[ldn
].scb
.u1
.log_blk_adr
);
575 printk(KERN_ERR
" SCB-system buffer address...: %lx\n", ld(shpnt
)[ldn
].scb
.sys_buf_adr
);
576 printk(KERN_ERR
" SCB-system buffer length....: %lx\n", ld(shpnt
)[ldn
].scb
.sys_buf_length
);
577 printk(KERN_ERR
" SCB-tsb address.............: %lx\n", ld(shpnt
)[ldn
].scb
.tsb_adr
);
578 printk(KERN_ERR
" SCB-Chain address...........: %lx\n", ld(shpnt
)[ldn
].scb
.scb_chain_adr
);
579 printk(KERN_ERR
" SCB-block count.............: %x\n", ld(shpnt
)[ldn
].scb
.u2
.blk
.count
);
580 printk(KERN_ERR
" SCB-block length............: %x\n", ld(shpnt
)[ldn
].scb
.u2
.blk
.length
);
582 printk(KERN_ERR
" Send this report to the maintainer.\n");
583 panic("IBM MCA SCSI: Fatal error message from the subsystem (0x%X,0x%X)!\n", lastSCSI
, cmd_result
);
587 /* The command error handling is made silent, but we tell the
588 * calling function, that there is a reported error from the
590 switch (cmd_result
) {
591 case IM_ADAPTER_HW_FAILURE
:
592 case IM_SOFTWARE_SEQUENCING_ERROR
:
594 global_command_error_excuse
= CMD_FAIL
;
597 global_command_error_excuse
= 0;
601 /* if no panic appeared, increase the interrupt-counter */
602 IBM_DS(shpnt
).total_interrupts
++;
603 /*only for local checking phase */
604 if (local_checking_phase_flag(shpnt
)) {
605 stat_result(shpnt
) = cmd_result
;
606 got_interrupt(shpnt
) = 1;
607 reset_status(shpnt
) = IM_RESET_FINISHED_OK
;
608 last_scsi_command(shpnt
)[ldn
] = NO_SCSI
;
609 spin_unlock_irqrestore(shpnt
->host_lock
, flags
);
612 /* handling of commands coming from upper level of scsi driver */
613 if (last_scsi_type(shpnt
)[ldn
] == IM_IMM_CMD
) {
614 /* verify ldn, and may handle rare reset immediate command */
615 if ((reset_status(shpnt
) == IM_RESET_IN_PROGRESS
) && (last_scsi_command(shpnt
)[ldn
] == IM_RESET_IMM_CMD
)) {
616 if (cmd_result
== IM_CMD_COMPLETED_WITH_FAILURE
) {
617 disk_rw_in_progress
= 0;
619 reset_status(shpnt
) = IM_RESET_FINISHED_FAIL
;
621 /*reset disk led counter, turn off disk led */
622 disk_rw_in_progress
= 0;
624 reset_status(shpnt
) = IM_RESET_FINISHED_OK
;
626 stat_result(shpnt
) = cmd_result
;
627 last_scsi_command(shpnt
)[ldn
] = NO_SCSI
;
628 last_scsi_type(shpnt
)[ldn
] = 0;
629 spin_unlock_irqrestore(shpnt
->host_lock
, flags
);
631 } else if (last_scsi_command(shpnt
)[ldn
] == IM_ABORT_IMM_CMD
) {
632 /* react on SCSI abort command */
633 #ifdef IM_DEBUG_PROBE
634 printk("IBM MCA SCSI: Interrupt from SCSI-abort.\n");
636 disk_rw_in_progress
= 0;
638 cmd
= ld(shpnt
)[ldn
].cmd
;
639 ld(shpnt
)[ldn
].cmd
= NULL
;
640 if (cmd_result
== IM_CMD_COMPLETED_WITH_FAILURE
)
641 cmd
->result
= DID_NO_CONNECT
<< 16;
643 cmd
->result
= DID_ABORT
<< 16;
644 stat_result(shpnt
) = cmd_result
;
645 last_scsi_command(shpnt
)[ldn
] = NO_SCSI
;
646 last_scsi_type(shpnt
)[ldn
] = 0;
648 (cmd
->scsi_done
) (cmd
); /* should be the internal_done */
649 spin_unlock_irqrestore(shpnt
->host_lock
, flags
);
652 disk_rw_in_progress
= 0;
654 reset_status(shpnt
) = IM_RESET_FINISHED_OK
;
655 stat_result(shpnt
) = cmd_result
;
656 last_scsi_command(shpnt
)[ldn
] = NO_SCSI
;
657 spin_unlock_irqrestore(shpnt
->host_lock
, flags
);
661 last_scsi_command(shpnt
)[ldn
] = NO_SCSI
;
662 last_scsi_type(shpnt
)[ldn
] = 0;
663 cmd
= ld(shpnt
)[ldn
].cmd
;
664 ld(shpnt
)[ldn
].cmd
= NULL
;
665 #ifdef IM_DEBUG_TIMEOUT
667 if ((cmd
->target
== TIMEOUT_PUN
) && (cmd
->device
->lun
== TIMEOUT_LUN
)) {
668 spin_unlock_irqsave(shpnt
->host_lock
, flags
);
669 printk("IBM MCA SCSI: Ignoring interrupt from pun=%x, lun=%x.\n", cmd
->target
, cmd
->device
->lun
);
674 /*if no command structure, just return, else clear cmd */
677 spin_unlock_irqrestore(shpnt
->host_lock
, flags
);
682 printk("cmd=%02x ireg=%02x ds=%02x cs=%02x de=%02x ce=%02x\n", cmd
->cmnd
[0], intr_reg
, ld(shpnt
)[ldn
].tsb
.dev_status
, ld(shpnt
)[ldn
].tsb
.cmd_status
, ld(shpnt
)[ldn
].tsb
.dev_error
, ld(shpnt
)[ldn
].tsb
.cmd_error
);
684 /*if this is end of media read/write, may turn off PS/2 disk led */
685 if ((ld(shpnt
)[ldn
].device_type
!= TYPE_NO_LUN
) && (ld(shpnt
)[ldn
].device_type
!= TYPE_NO_DEVICE
)) {
686 /* only access this, if there was a valid device addressed */
687 if (--disk_rw_in_progress
== 0)
691 /* IBM describes the status-mask to be 0x1e, but this is not conform
692 * with SCSI-definition, I suppose, the reason for it is that IBM
693 * adapters do not support CMD_TERMINATED, TASK_SET_FULL and
694 * ACA_ACTIVE as returning statusbyte information. (ML) */
695 if (cmd_result
== IM_CMD_COMPLETED_WITH_FAILURE
) {
696 cmd
->result
= (unsigned char) (ld(shpnt
)[ldn
].tsb
.dev_status
& 0x1e);
697 IBM_DS(shpnt
).total_errors
++;
700 /* write device status into cmd->result, and call done function */
701 if (lastSCSI
== NO_SCSI
) { /* unexpected interrupt :-( */
702 cmd
->result
|= DID_BAD_INTR
<< 16;
703 printk("IBM MCA SCSI: WARNING - Interrupt from non-pending SCSI-command!\n");
704 } else /* things went right :-) */
705 cmd
->result
|= DID_OK
<< 16;
707 (cmd
->scsi_done
) (cmd
);
708 spin_unlock_irqrestore(shpnt
->host_lock
, flags
);
712 static void issue_cmd(struct Scsi_Host
*shpnt
, unsigned long cmd_reg
,
713 unsigned char attn_reg
)
716 /* must wait for attention reg not busy */
718 spin_lock_irqsave(shpnt
->host_lock
, flags
);
719 if (!(inb(IM_STAT_REG(shpnt
)) & IM_BUSY
))
721 spin_unlock_irqrestore(shpnt
->host_lock
, flags
);
723 /* write registers and enable system interrupts */
724 outl(cmd_reg
, IM_CMD_REG(shpnt
));
725 outb(attn_reg
, IM_ATTN_REG(shpnt
));
726 spin_unlock_irqrestore(shpnt
->host_lock
, flags
);
729 static void internal_done(Scsi_Cmnd
* cmd
)
735 /* SCSI-SCB-command for device_inquiry */
736 static int device_inquiry(struct Scsi_Host
*shpnt
, int ldn
)
743 scb
= &(ld(shpnt
)[ldn
].scb
);
744 tsb
= &(ld(shpnt
)[ldn
].tsb
);
745 buf
= (unsigned char *) (&(ld(shpnt
)[ldn
].buf
));
746 ld(shpnt
)[ldn
].tsb
.dev_status
= 0; /* prepare statusblock */
747 for (retr
= 0; retr
< 3; retr
++) {
748 /* fill scb with inquiry command */
749 scb
->command
= IM_DEVICE_INQUIRY_CMD
| IM_NO_DISCONNECT
;
750 scb
->enable
= IM_REPORT_TSB_ONLY_ON_ERROR
| IM_READ_CONTROL
| IM_SUPRESS_EXCEPTION_SHORT
| IM_RETRY_ENABLE
| IM_BYPASS_BUFFER
;
751 last_scsi_command(shpnt
)[ldn
] = IM_DEVICE_INQUIRY_CMD
;
752 last_scsi_type(shpnt
)[ldn
] = IM_SCB
;
753 scb
->sys_buf_adr
= isa_virt_to_bus(buf
);
754 scb
->sys_buf_length
= 255; /* maximum bufferlength gives max info */
755 scb
->tsb_adr
= isa_virt_to_bus(tsb
);
756 /* issue scb to passed ldn, and busy wait for interrupt */
757 got_interrupt(shpnt
) = 0;
758 issue_cmd(shpnt
, isa_virt_to_bus(scb
), IM_SCB
| ldn
);
759 while (!got_interrupt(shpnt
))
762 /*if command successful, break */
763 if ((stat_result(shpnt
) == IM_SCB_CMD_COMPLETED
) || (stat_result(shpnt
) == IM_SCB_CMD_COMPLETED_WITH_RETRIES
))
766 /*if all three retries failed, return "no device at this ldn" */
773 static int read_capacity(struct Scsi_Host
*shpnt
, int ldn
)
780 scb
= &(ld(shpnt
)[ldn
].scb
);
781 tsb
= &(ld(shpnt
)[ldn
].tsb
);
782 buf
= (unsigned char *) (&(ld(shpnt
)[ldn
].buf
));
783 ld(shpnt
)[ldn
].tsb
.dev_status
= 0;
784 for (retr
= 0; retr
< 3; retr
++) {
785 /*fill scb with read capacity command */
786 scb
->command
= IM_READ_CAPACITY_CMD
;
787 scb
->enable
= IM_REPORT_TSB_ONLY_ON_ERROR
| IM_READ_CONTROL
| IM_RETRY_ENABLE
| IM_BYPASS_BUFFER
;
788 last_scsi_command(shpnt
)[ldn
] = IM_READ_CAPACITY_CMD
;
789 last_scsi_type(shpnt
)[ldn
] = IM_SCB
;
790 scb
->sys_buf_adr
= isa_virt_to_bus(buf
);
791 scb
->sys_buf_length
= 8;
792 scb
->tsb_adr
= isa_virt_to_bus(tsb
);
793 /*issue scb to passed ldn, and busy wait for interrupt */
794 got_interrupt(shpnt
) = 0;
795 issue_cmd(shpnt
, isa_virt_to_bus(scb
), IM_SCB
| ldn
);
796 while (!got_interrupt(shpnt
))
799 /*if got capacity, get block length and return one device found */
800 if ((stat_result(shpnt
) == IM_SCB_CMD_COMPLETED
) || (stat_result(shpnt
) == IM_SCB_CMD_COMPLETED_WITH_RETRIES
))
803 /*if all three retries failed, return "no device at this ldn" */
810 static int get_pos_info(struct Scsi_Host
*shpnt
)
817 scb
= &(ld(shpnt
)[MAX_LOG_DEV
].scb
);
818 tsb
= &(ld(shpnt
)[MAX_LOG_DEV
].tsb
);
819 buf
= (unsigned char *) (&(ld(shpnt
)[MAX_LOG_DEV
].buf
));
820 ld(shpnt
)[MAX_LOG_DEV
].tsb
.dev_status
= 0;
821 for (retr
= 0; retr
< 3; retr
++) {
822 /*fill scb with get_pos_info command */
823 scb
->command
= IM_GET_POS_INFO_CMD
;
824 scb
->enable
= IM_READ_CONTROL
| IM_REPORT_TSB_ONLY_ON_ERROR
| IM_RETRY_ENABLE
| IM_BYPASS_BUFFER
;
825 last_scsi_command(shpnt
)[MAX_LOG_DEV
] = IM_GET_POS_INFO_CMD
;
826 last_scsi_type(shpnt
)[MAX_LOG_DEV
] = IM_SCB
;
827 scb
->sys_buf_adr
= isa_virt_to_bus(buf
);
828 if (special(shpnt
) == IBM_SCSI2_FW
)
829 scb
->sys_buf_length
= 256; /* get all info from F/W adapter */
831 scb
->sys_buf_length
= 18; /* get exactly 18 bytes for other SCSI */
832 scb
->tsb_adr
= isa_virt_to_bus(tsb
);
833 /*issue scb to ldn=15, and busy wait for interrupt */
834 got_interrupt(shpnt
) = 0;
835 issue_cmd(shpnt
, isa_virt_to_bus(scb
), IM_SCB
| MAX_LOG_DEV
);
837 while (!got_interrupt(shpnt
))
840 /*if got POS-stuff, get block length and return one device found */
841 if ((stat_result(shpnt
) == IM_SCB_CMD_COMPLETED
) || (stat_result(shpnt
) == IM_SCB_CMD_COMPLETED_WITH_RETRIES
))
844 /* if all three retries failed, return "no device at this ldn" */
851 /* SCSI-immediate-command for assign. This functions maps/unmaps specific
852 ldn-numbers on SCSI (PUN,LUN). It is needed for presetting of the
853 subsystem and for dynamical remapping od ldns. */
854 static int immediate_assign(struct Scsi_Host
*shpnt
, unsigned int pun
,
855 unsigned int lun
, unsigned int ldn
,
856 unsigned int operation
)
859 unsigned long imm_cmd
;
861 for (retr
= 0; retr
< 3; retr
++) {
862 /* select mutation level of the SCSI-adapter */
863 switch (special(shpnt
)) {
865 imm_cmd
= (unsigned long) (IM_ASSIGN_IMM_CMD
);
866 imm_cmd
|= (unsigned long) ((lun
& 7) << 24);
867 imm_cmd
|= (unsigned long) ((operation
& 1) << 23);
868 imm_cmd
|= (unsigned long) ((pun
& 7) << 20) | ((pun
& 8) << 24);
869 imm_cmd
|= (unsigned long) ((ldn
& 15) << 16);
872 imm_cmd
= inl(IM_CMD_REG(shpnt
));
873 imm_cmd
&= (unsigned long) (0xF8000000); /* keep reserved bits */
874 imm_cmd
|= (unsigned long) (IM_ASSIGN_IMM_CMD
);
875 imm_cmd
|= (unsigned long) ((lun
& 7) << 24);
876 imm_cmd
|= (unsigned long) ((operation
& 1) << 23);
877 imm_cmd
|= (unsigned long) ((pun
& 7) << 20);
878 imm_cmd
|= (unsigned long) ((ldn
& 15) << 16);
881 last_scsi_command(shpnt
)[MAX_LOG_DEV
] = IM_ASSIGN_IMM_CMD
;
882 last_scsi_type(shpnt
)[MAX_LOG_DEV
] = IM_IMM_CMD
;
883 got_interrupt(shpnt
) = 0;
884 issue_cmd(shpnt
, (unsigned long) (imm_cmd
), IM_IMM_CMD
| MAX_LOG_DEV
);
885 while (!got_interrupt(shpnt
))
888 /*if command successful, break */
889 if (stat_result(shpnt
) == IM_IMMEDIATE_CMD_COMPLETED
)
898 static int immediate_feature(struct Scsi_Host
*shpnt
, unsigned int speed
, unsigned int timeout
)
901 unsigned long imm_cmd
;
903 for (retr
= 0; retr
< 3; retr
++) {
904 /* select mutation level of the SCSI-adapter */
905 imm_cmd
= IM_FEATURE_CTR_IMM_CMD
;
906 imm_cmd
|= (unsigned long) ((speed
& 0x7) << 29);
907 imm_cmd
|= (unsigned long) ((timeout
& 0x1fff) << 16);
908 last_scsi_command(shpnt
)[MAX_LOG_DEV
] = IM_FEATURE_CTR_IMM_CMD
;
909 last_scsi_type(shpnt
)[MAX_LOG_DEV
] = IM_IMM_CMD
;
910 got_interrupt(shpnt
) = 0;
911 /* we need to run into command errors in order to probe for the
913 global_command_error_excuse
= 1;
914 issue_cmd(shpnt
, (unsigned long) (imm_cmd
), IM_IMM_CMD
| MAX_LOG_DEV
);
916 while (!got_interrupt(shpnt
))
918 if (global_command_error_excuse
== CMD_FAIL
) {
919 global_command_error_excuse
= 0;
922 global_command_error_excuse
= 0;
923 /*if command successful, break */
924 if (stat_result(shpnt
) == IM_IMMEDIATE_CMD_COMPLETED
)
933 #ifdef CONFIG_IBMMCA_SCSI_DEV_RESET
934 static int immediate_reset(struct Scsi_Host
*shpnt
, unsigned int ldn
)
938 unsigned long imm_command
;
940 for (retries
= 0; retries
< 3; retries
++) {
941 imm_command
= inl(IM_CMD_REG(shpnt
));
942 imm_command
&= (unsigned long) (0xFFFF0000); /* keep reserved bits */
943 imm_command
|= (unsigned long) (IM_RESET_IMM_CMD
);
944 last_scsi_command(shpnt
)[ldn
] = IM_RESET_IMM_CMD
;
945 last_scsi_type(shpnt
)[ldn
] = IM_IMM_CMD
;
946 got_interrupt(shpnt
) = 0;
947 reset_status(shpnt
) = IM_RESET_IN_PROGRESS
;
948 issue_cmd(shpnt
, (unsigned long) (imm_command
), IM_IMM_CMD
| ldn
);
949 ticks
= IM_RESET_DELAY
* HZ
;
950 while (reset_status(shpnt
) == IM_RESET_IN_PROGRESS
&& --ticks
) {
951 udelay((1 + 999 / HZ
) * 1000);
954 /* if reset did not complete, just complain */
956 printk(KERN_ERR
"IBM MCA SCSI: reset did not complete within %d seconds.\n", IM_RESET_DELAY
);
957 reset_status(shpnt
) = IM_RESET_FINISHED_OK
;
958 /* did not work, finish */
961 /*if command successful, break */
962 if (stat_result(shpnt
) == IM_IMMEDIATE_CMD_COMPLETED
)
972 /* type-interpreter for physical device numbers */
973 static char *ti_p(int dev
)
976 case TYPE_IBM_SCSI_ADAPTER
:
992 case TYPE_MEDIUM_CHANGER
:
995 return ("+"); /* show NO_LUN */
997 return ("-"); /* TYPE_NO_DEVICE and others */
1000 /* interpreter for logical device numbers (ldn) */
1001 static char *ti_l(int val
)
1003 const char hex
[16] = "0123456789abcdef";
1004 static char answer
[2];
1006 answer
[1] = (char) (0x0);
1007 if (val
<= MAX_LOG_DEV
)
1008 answer
[0] = hex
[val
];
1011 return (char *) &answer
;
1014 /* transfers bitpattern of the feature command to values in MHz */
1015 static char *ibmrate(unsigned int speed
, int i
)
1019 return i
? "5.00" : "10.00";
1021 return i
? "4.00" : "8.00";
1023 return i
? "3.33" : "6.66";
1025 return i
? "2.86" : "5.00";
1027 return i
? "2.50" : "4.00";
1029 return i
? "2.22" : "3.10";
1031 return i
? "2.00" : "2.50";
1033 return i
? "1.82" : "2.00";
1038 static int probe_display(int what
)
1040 static int rotator
= 0;
1041 const char rotor
[] = "|/-\\";
1043 if (!(display_mode
& LED_DISP
))
1046 outl(0x20202020, MOD95_LED_PORT
);
1047 outl(0x20202020, MOD95_LED_PORT
+ 4);
1049 outb('S', MOD95_LED_PORT
+ 7);
1050 outb('C', MOD95_LED_PORT
+ 6);
1051 outb('S', MOD95_LED_PORT
+ 5);
1052 outb('I', MOD95_LED_PORT
+ 4);
1053 outb('i', MOD95_LED_PORT
+ 3);
1054 outb('n', MOD95_LED_PORT
+ 2);
1055 outb('i', MOD95_LED_PORT
+ 1);
1056 outb((char) (rotor
[rotator
]), MOD95_LED_PORT
);
1064 static int probe_bus_mode(struct Scsi_Host
*shpnt
)
1066 struct im_pos_info
*info
;
1070 info
= (struct im_pos_info
*) (&(ld(shpnt
)[MAX_LOG_DEV
].buf
));
1071 if (get_pos_info(shpnt
)) {
1072 if (info
->connector_size
& 0xf000)
1073 subsystem_connector_size(shpnt
) = 16;
1075 subsystem_connector_size(shpnt
) = 32;
1076 num_bus
|= (info
->pos_4b
& 8) >> 3;
1077 for (ldn
= 0; ldn
<= MAX_LOG_DEV
; ldn
++) {
1078 if ((special(shpnt
) == IBM_SCSI_WCACHE
) || (special(shpnt
) == IBM_7568_WCACHE
)) {
1079 if (!((info
->cache_stat
>> ldn
) & 1))
1080 ld(shpnt
)[ldn
].cache_flag
= 0;
1082 if (!((info
->retry_stat
>> ldn
) & 1))
1083 ld(shpnt
)[ldn
].retry_flag
= 0;
1085 #ifdef IM_DEBUG_PROBE
1086 printk("IBM MCA SCSI: SCSI-Cache bits: ");
1087 for (ldn
= 0; ldn
<= MAX_LOG_DEV
; ldn
++) {
1088 printk("%d", ld(shpnt
)[ldn
].cache_flag
);
1090 printk("\nIBM MCA SCSI: SCSI-Retry bits: ");
1091 for (ldn
= 0; ldn
<= MAX_LOG_DEV
; ldn
++) {
1092 printk("%d", ld(shpnt
)[ldn
].retry_flag
);
1100 /* probing scsi devices */
1101 static void check_devices(struct Scsi_Host
*shpnt
, int adaptertype
)
1103 int id
, lun
, ldn
, ticks
;
1104 int count_devices
; /* local counter for connected device */
1107 int speedrun
; /* local adapter_speed check variable */
1109 /* assign default values to certain variables */
1112 IBM_DS(shpnt
).dyn_flag
= 0; /* normally no need for dynamical ldn management */
1113 IBM_DS(shpnt
).total_errors
= 0; /* set errorcounter to 0 */
1114 next_ldn(shpnt
) = 7; /* next ldn to be assigned is 7, because 0-6 is 'hardwired' */
1116 /* initialize the very important driver-informational arrays/structs */
1117 memset(ld(shpnt
), 0, sizeof(ld(shpnt
)));
1118 for (ldn
= 0; ldn
<= MAX_LOG_DEV
; ldn
++) {
1119 last_scsi_command(shpnt
)[ldn
] = NO_SCSI
; /* emptify last SCSI-command storage */
1120 last_scsi_type(shpnt
)[ldn
] = 0;
1121 ld(shpnt
)[ldn
].cache_flag
= 1;
1122 ld(shpnt
)[ldn
].retry_flag
= 1;
1124 memset(get_ldn(shpnt
), TYPE_NO_DEVICE
, sizeof(get_ldn(shpnt
))); /* this is essential ! */
1125 memset(get_scsi(shpnt
), TYPE_NO_DEVICE
, sizeof(get_scsi(shpnt
))); /* this is essential ! */
1126 for (lun
= 0; lun
< 8; lun
++) {
1127 /* mark the adapter at its pun on all luns */
1128 get_scsi(shpnt
)[subsystem_pun(shpnt
)][lun
] = TYPE_IBM_SCSI_ADAPTER
;
1129 get_ldn(shpnt
)[subsystem_pun(shpnt
)][lun
] = MAX_LOG_DEV
; /* make sure, the subsystem
1130 ldn is active for all
1133 probe_display(0); /* Supercool display usage during SCSI-probing. */
1134 /* This makes sense, when booting without any */
1135 /* monitor connected on model XX95. */
1138 adapter_speed(shpnt
) = global_adapter_speed
;
1139 speedrun
= adapter_speed(shpnt
);
1140 while (immediate_feature(shpnt
, speedrun
, adapter_timeout
) == 2) {
1143 panic("IBM MCA SCSI: Cannot set Synchronous-Transfer-Rate!\n");
1148 adapter_speed(shpnt
) = speedrun
;
1149 /* Get detailed information about the current adapter, necessary for
1150 * device operations: */
1151 num_bus
= probe_bus_mode(shpnt
);
1153 /* num_bus contains only valid data for the F/W adapter! */
1154 if (adaptertype
== IBM_SCSI2_FW
) { /* F/W SCSI adapter: */
1155 /* F/W adapter PUN-space extension evaluation: */
1157 printk(KERN_INFO
"IBM MCA SCSI: Separate bus mode (wide-addressing enabled)\n");
1158 subsystem_maxid(shpnt
) = 16;
1160 printk(KERN_INFO
"IBM MCA SCSI: Combined bus mode (wide-addressing disabled)\n");
1161 subsystem_maxid(shpnt
) = 8;
1163 printk(KERN_INFO
"IBM MCA SCSI: Sync.-Rate (F/W: 20, Int.: 10, Ext.: %s) MBytes/s\n", ibmrate(speedrun
, adaptertype
));
1164 } else /* all other IBM SCSI adapters: */
1165 printk(KERN_INFO
"IBM MCA SCSI: Synchronous-SCSI-Transfer-Rate: %s MBytes/s\n", ibmrate(speedrun
, adaptertype
));
1167 /* assign correct PUN device space */
1168 max_pun
= subsystem_maxid(shpnt
);
1170 #ifdef IM_DEBUG_PROBE
1171 printk("IBM MCA SCSI: Current SCSI-host index: %d\n", shpnt
);
1172 printk("IBM MCA SCSI: Removing default logical SCSI-device mapping.");
1174 printk(KERN_INFO
"IBM MCA SCSI: Dev. Order: %s, Mapping (takes <2min): ", (ibm_ansi_order
) ? "ANSI" : "New");
1176 for (ldn
= 0; ldn
< MAX_LOG_DEV
; ldn
++) {
1178 #ifdef IM_DEBUG_PROBE
1181 immediate_assign(shpnt
, 0, 0, ldn
, REMOVE_LDN
); /* remove ldn (wherever) */
1183 lun
= 0; /* default lun is 0 */
1184 #ifndef IM_DEBUG_PROBE
1188 #ifdef IM_DEBUG_PROBE
1189 printk("\nIBM MCA SCSI: Scanning SCSI-devices.");
1191 for (id
= 0; id
< max_pun
; id
++)
1192 #ifdef CONFIG_SCSI_MULTI_LUN
1193 for (lun
= 0; lun
< 8; lun
++)
1197 #ifdef IM_DEBUG_PROBE
1200 if (id
!= subsystem_pun(shpnt
)) {
1201 /* if pun is not the adapter: */
1202 /* set ldn=0 to pun,lun */
1203 immediate_assign(shpnt
, id
, lun
, PROBE_LDN
, SET_LDN
);
1204 if (device_inquiry(shpnt
, PROBE_LDN
)) { /* probe device */
1205 get_scsi(shpnt
)[id
][lun
] = (unsigned char) (ld(shpnt
)[PROBE_LDN
].buf
[0]);
1206 /* entry, even for NO_LUN */
1207 if (ld(shpnt
)[PROBE_LDN
].buf
[0] != TYPE_NO_LUN
)
1208 count_devices
++; /* a existing device is found */
1211 immediate_assign(shpnt
, id
, lun
, PROBE_LDN
, REMOVE_LDN
);
1214 #ifndef IM_DEBUG_PROBE
1218 #ifdef IM_DEBUG_PROBE
1219 printk("\nIBM MCA SCSI: Mapping SCSI-devices.");
1223 #ifdef CONFIG_SCSI_MULTI_LUN
1224 for (lun
= 0; lun
< 8 && ldn
< MAX_LOG_DEV
; lun
++)
1226 for (id
= 0; id
< max_pun
&& ldn
< MAX_LOG_DEV
; id
++) {
1228 #ifdef IM_DEBUG_PROBE
1231 if (id
!= subsystem_pun(shpnt
)) {
1232 if (get_scsi(shpnt
)[id
][lun
] != TYPE_NO_LUN
&& get_scsi(shpnt
)[id
][lun
] != TYPE_NO_DEVICE
) {
1233 /* Only map if accepted type. Always enter for
1234 lun == 0 to get no gaps into ldn-mapping for ldn<7. */
1235 immediate_assign(shpnt
, id
, lun
, ldn
, SET_LDN
);
1236 get_ldn(shpnt
)[id
][lun
] = ldn
; /* map ldn */
1237 if (device_exists(shpnt
, ldn
, &ld(shpnt
)[ldn
].block_length
, &ld(shpnt
)[ldn
].device_type
)) {
1238 #ifdef CONFIG_IBMMCA_SCSI_DEV_RESET
1239 printk("resetting device at ldn=%x ... ", ldn
);
1240 immediate_reset(shpnt
, ldn
);
1244 /* device vanished, probably because we don't know how to
1245 * handle it or because it has problems */
1247 /* remove mapping */
1248 get_ldn(shpnt
)[id
][lun
] = TYPE_NO_DEVICE
;
1249 immediate_assign(shpnt
, 0, 0, ldn
, REMOVE_LDN
);
1253 } else if (lun
== 0) {
1254 /* map lun == 0, even if no device exists */
1255 immediate_assign(shpnt
, id
, lun
, ldn
, SET_LDN
);
1256 get_ldn(shpnt
)[id
][lun
] = ldn
; /* map ldn */
1263 /* map remaining ldns to non-existing devices */
1264 for (lun
= 1; lun
< 8 && ldn
< MAX_LOG_DEV
; lun
++)
1265 for (id
= 0; id
< max_pun
&& ldn
< MAX_LOG_DEV
; id
++) {
1266 if (get_scsi(shpnt
)[id
][lun
] == TYPE_NO_LUN
|| get_scsi(shpnt
)[id
][lun
] == TYPE_NO_DEVICE
) {
1268 /* Map remaining ldns only to NON-existing pun,lun
1269 combinations to make sure an inquiry will fail.
1270 For MULTI_LUN, it is needed to avoid adapter autonome
1272 immediate_assign(shpnt
, id
, lun
, ldn
, SET_LDN
);
1273 get_ldn(shpnt
)[id
][lun
] = ldn
;
1277 #ifndef IM_DEBUG_PROBE
1281 #ifdef IM_DEBUG_PROBE
1283 printk("IBM MCA SCSI: Device order: IBM/ANSI (pun=7 is first).\n");
1285 printk("IBM MCA SCSI: Device order: New Industry Standard (pun=0 is first).\n");
1288 #ifdef IM_DEBUG_PROBE
1289 /* Show the physical and logical mapping during boot. */
1290 printk("IBM MCA SCSI: Determined SCSI-device-mapping:\n");
1291 printk(" Physical SCSI-Device Map Logical SCSI-Device Map\n");
1292 printk("ID\\LUN 0 1 2 3 4 5 6 7 ID\\LUN 0 1 2 3 4 5 6 7\n");
1293 for (id
= 0; id
< max_pun
; id
++) {
1295 for (lun
= 0; lun
< 8; lun
++)
1296 printk("%2s ", ti_p(get_scsi(shpnt
)[id
][lun
]));
1297 printk(" %2d ", id
);
1298 for (lun
= 0; lun
< 8; lun
++)
1299 printk("%2s ", ti_l(get_ldn(shpnt
)[id
][lun
]));
1304 /* assign total number of found SCSI-devices to the statistics struct */
1305 IBM_DS(shpnt
).total_scsi_devices
= count_devices
;
1307 /* decide for output in /proc-filesystem, if the configuration of
1308 SCSI-devices makes dynamical reassignment of devices necessary */
1309 if (count_devices
>= MAX_LOG_DEV
)
1310 IBM_DS(shpnt
).dyn_flag
= 1; /* dynamical assignment is necessary */
1312 IBM_DS(shpnt
).dyn_flag
= 0; /* dynamical assignment is not necessary */
1314 /* If no SCSI-devices are assigned, return 1 in order to cause message. */
1316 printk("IBM MCA SCSI: Warning: No SCSI-devices found/assigned!\n");
1318 /* reset the counters for statistics on the current adapter */
1319 IBM_DS(shpnt
).scbs
= 0;
1320 IBM_DS(shpnt
).long_scbs
= 0;
1321 IBM_DS(shpnt
).total_accesses
= 0;
1322 IBM_DS(shpnt
).total_interrupts
= 0;
1323 IBM_DS(shpnt
).dynamical_assignments
= 0;
1324 memset(IBM_DS(shpnt
).ldn_access
, 0x0, sizeof(IBM_DS(shpnt
).ldn_access
));
1325 memset(IBM_DS(shpnt
).ldn_read_access
, 0x0, sizeof(IBM_DS(shpnt
).ldn_read_access
));
1326 memset(IBM_DS(shpnt
).ldn_write_access
, 0x0, sizeof(IBM_DS(shpnt
).ldn_write_access
));
1327 memset(IBM_DS(shpnt
).ldn_inquiry_access
, 0x0, sizeof(IBM_DS(shpnt
).ldn_inquiry_access
));
1328 memset(IBM_DS(shpnt
).ldn_modeselect_access
, 0x0, sizeof(IBM_DS(shpnt
).ldn_modeselect_access
));
1329 memset(IBM_DS(shpnt
).ldn_assignments
, 0x0, sizeof(IBM_DS(shpnt
).ldn_assignments
));
1334 static int device_exists(struct Scsi_Host
*shpnt
, int ldn
, int *block_length
, int *device_type
)
1337 /* if no valid device found, return immediately with 0 */
1338 if (!(device_inquiry(shpnt
, ldn
)))
1340 buf
= (unsigned char *) (&(ld(shpnt
)[ldn
].buf
));
1341 if (*buf
== TYPE_ROM
) {
1342 *device_type
= TYPE_ROM
;
1343 *block_length
= 2048; /* (standard blocksize for yellow-/red-book) */
1346 if (*buf
== TYPE_WORM
) {
1347 *device_type
= TYPE_WORM
;
1348 *block_length
= 2048;
1351 if (*buf
== TYPE_DISK
) {
1352 *device_type
= TYPE_DISK
;
1353 if (read_capacity(shpnt
, ldn
)) {
1354 *block_length
= *(buf
+ 7) + (*(buf
+ 6) << 8) + (*(buf
+ 5) << 16) + (*(buf
+ 4) << 24);
1359 if (*buf
== TYPE_MOD
) {
1360 *device_type
= TYPE_MOD
;
1361 if (read_capacity(shpnt
, ldn
)) {
1362 *block_length
= *(buf
+ 7) + (*(buf
+ 6) << 8) + (*(buf
+ 5) << 16) + (*(buf
+ 4) << 24);
1367 if (*buf
== TYPE_TAPE
) {
1368 *device_type
= TYPE_TAPE
;
1369 *block_length
= 0; /* not in use (setting by mt and mtst in op.) */
1372 if (*buf
== TYPE_PROCESSOR
) {
1373 *device_type
= TYPE_PROCESSOR
;
1374 *block_length
= 0; /* they set their stuff on drivers */
1377 if (*buf
== TYPE_SCANNER
) {
1378 *device_type
= TYPE_SCANNER
;
1379 *block_length
= 0; /* they set their stuff on drivers */
1382 if (*buf
== TYPE_MEDIUM_CHANGER
) {
1383 *device_type
= TYPE_MEDIUM_CHANGER
;
1384 *block_length
= 0; /* One never knows, what to expect on a medium
1391 static void internal_ibmmca_scsi_setup(char *str
, int *ints
)
1393 int i
, j
, io_base
, id_base
;
1400 while ((token
= strsep(&str
, ",")) != NULL
) {
1401 if (!strcmp(token
, "activity"))
1402 display_mode
|= LED_ACTIVITY
;
1403 if (!strcmp(token
, "display"))
1404 display_mode
|= LED_DISP
;
1405 if (!strcmp(token
, "adisplay"))
1406 display_mode
|= LED_ADISP
;
1407 if (!strcmp(token
, "normal"))
1409 if (!strcmp(token
, "ansi"))
1411 if (!strcmp(token
, "fast"))
1412 global_adapter_speed
= 0;
1413 if (!strcmp(token
, "medium"))
1414 global_adapter_speed
= 4;
1415 if (!strcmp(token
, "slow"))
1416 global_adapter_speed
= 7;
1417 if ((*token
== '-') || (isdigit(*token
))) {
1418 if (!(j
% 2) && (io_base
< IM_MAX_HOSTS
))
1419 io_port
[io_base
++] = simple_strtoul(token
, NULL
, 0);
1420 if ((j
% 2) && (id_base
< IM_MAX_HOSTS
))
1421 scsi_id
[id_base
++] = simple_strtoul(token
, NULL
, 0);
1426 for (i
= 0; i
< IM_MAX_HOSTS
&& 2 * i
+ 2 < ints
[0]; i
++) {
1427 io_port
[i
] = ints
[2 * i
+ 2];
1428 scsi_id
[i
] = ints
[2 * i
+ 2];
1435 static struct scsi_host_template ibmmca_driver_template
= {
1436 .proc_name
= "ibmmca",
1437 .proc_info
= ibmmca_proc_info
,
1438 .name
= "IBM SCSI-Subsystem",
1439 .queuecommand
= ibmmca_queuecommand
,
1440 .eh_abort_handler
= ibmmca_abort
,
1441 .eh_host_reset_handler
= ibmmca_host_reset
,
1442 .bios_param
= ibmmca_biosparam
,
1447 .use_clustering
= ENABLE_CLUSTERING
,
1450 static int ibmmca_probe(struct device
*dev
)
1452 struct Scsi_Host
*shpnt
;
1453 int port
, id
, i
, j
, k
, irq
, enabled
, ret
= -EINVAL
;
1454 struct mca_device
*mca_dev
= to_mca_device(dev
);
1455 const char *description
= ibmmca_description
[mca_dev
->index
];
1457 /* First of all, print the version number of the driver. This is
1458 * important to allow better user bugreports in case of already
1459 * having problems with the MCA_bus probing. */
1460 printk(KERN_INFO
"IBM MCA SCSI: Version %s\n", IBMMCA_SCSI_DRIVER_VERSION
);
1461 /* The POS2-register of all PS/2 model SCSI-subsystems has the following
1462 * interpretation of bits:
1463 * Bit 7 - 4 : Chip Revision ID (Release)
1464 * Bit 3 - 2 : Reserved
1465 * Bit 1 : 8k NVRAM Disabled
1466 * Bit 0 : Chip Enable (EN-Signal)
1467 * The POS3-register is interpreted as follows:
1468 * Bit 7 - 5 : SCSI ID
1469 * Bit 4 : Reserved = 0
1470 * Bit 3 - 0 : Reserved = 0
1471 * (taken from "IBM, PS/2 Hardware Interface Technical Reference, Common
1472 * Interfaces (1991)").
1473 * In short words, this means, that IBM PS/2 machines only support
1474 * 1 single subsystem by default. The slot-adapters must have another
1475 * configuration on pos2. Here, one has to assume the following
1476 * things for POS2-register:
1477 * Bit 7 - 4 : Chip Revision ID (Release)
1478 * Bit 3 - 1 : port offset factor
1479 * Bit 0 : Chip Enable (EN-Signal)
1480 * As I found a patch here, setting the IO-registers to 0x3540 forced,
1481 * as there was a 0x05 in POS2 on a model 56, I assume, that the
1482 * port 0x3540 must be fix for integrated SCSI-controllers.
1483 * Ok, this discovery leads to the following implementation: (M.Lang) */
1485 /* first look for the IBM SCSI integrated subsystem on the motherboard */
1486 for (j
= 0; j
< 8; j
++) /* read the pos-information */
1487 pos
[j
] = mca_device_read_pos(mca_dev
, j
);
1488 id
= (pos
[3] & 0xe0) >> 5; /* this is correct and represents the PUN */
1489 enabled
= (pos
[2] &0x01);
1491 printk(KERN_WARNING
"IBM MCA SCSI: WARNING - Your SCSI-subsystem is disabled!\n");
1492 printk(KERN_WARNING
" SCSI-operations may not work.\n");
1495 /* pos2 = pos3 = 0xff if there is no integrated SCSI-subsystem present, but
1496 * if we ignore the settings of all surrounding pos registers, it is not
1497 * completely sufficient to only check pos2 and pos3. */
1498 /* Therefore, now the following if statement is used to
1499 * make sure, we see a real integrated onboard SCSI-interface and no
1500 * internal system information, which gets mapped to some pos registers
1501 * on models 95xx. */
1502 if (mca_dev
->slot
== MCA_INTEGSCSI
&&
1503 ((!pos
[0] && !pos
[1] && pos
[2] > 0 &&
1504 pos
[3] > 0 && !pos
[4] && !pos
[5] &&
1505 !pos
[6] && !pos
[7]) ||
1506 (pos
[0] == 0xff && pos
[1] == 0xff &&
1507 pos
[2] < 0xff && pos
[3] < 0xff &&
1508 pos
[4] == 0xff && pos
[5] == 0xff &&
1509 pos
[6] == 0xff && pos
[7] == 0xff))) {
1514 port
= IM_IO_PORT
+ ((pos
[2] &0x0e) << 2);
1515 if ((mca_dev
->index
== IBM_SCSI2_FW
) && (pos
[6] != 0)) {
1516 printk(KERN_ERR
"IBM MCA SCSI: ERROR - Wrong POS(6)-register setting!\n");
1517 printk(KERN_ERR
" Impossible to determine adapter PUN!\n");
1518 printk(KERN_ERR
" Guessing adapter PUN = 7.\n");
1521 id
= (pos
[3] & 0xe0) >> 5; /* get subsystem PUN */
1522 if (mca_dev
->index
== IBM_SCSI2_FW
) {
1523 id
|= (pos
[3] & 0x10) >> 1; /* get subsystem PUN high-bit
1524 * for F/W adapters */
1527 if ((mca_dev
->index
== IBM_SCSI2_FW
) &&
1528 (pos
[4] & 0x01) && (pos
[6] == 0)) {
1529 /* IRQ11 is used by SCSI-2 F/W Adapter/A */
1530 printk(KERN_DEBUG
"IBM MCA SCSI: SCSI-2 F/W adapter needs IRQ 11.\n");
1537 /* give detailed information on the subsystem. This helps me
1538 * additionally during debugging and analyzing bug-reports. */
1539 printk(KERN_INFO
"IBM MCA SCSI: %s found, io=0x%x, scsi id=%d,\n",
1540 description
, port
, id
);
1541 if (mca_dev
->slot
== MCA_INTEGSCSI
)
1542 printk(KERN_INFO
" chip rev.=%d, 8K NVRAM=%s, subsystem=%s\n", ((pos
[2] & 0xf0) >> 4), (pos
[2] & 2) ? "locked" : "accessible", (pos
[2] & 1) ? "enabled." : "disabled.");
1544 if ((pos
[2] & 0xf0) == 0xf0)
1545 printk(KERN_DEBUG
" ROM Addr.=off,");
1547 printk(KERN_DEBUG
" ROM Addr.=0x%x,", ((pos
[2] & 0xf0) << 13) + 0xc0000);
1549 printk(KERN_DEBUG
" port-offset=0x%x, subsystem=%s\n", ((pos
[2] & 0x0e) << 2), (pos
[2] & 1) ? "enabled." : "disabled.");
1552 /* check I/O region */
1553 if (!request_region(port
, IM_N_IO_PORT
, description
)) {
1554 printk(KERN_ERR
"IBM MCA SCSI: Unable to get I/O region 0x%x-0x%x (%d ports).\n", port
, port
+ IM_N_IO_PORT
- 1, IM_N_IO_PORT
);
1559 shpnt
= scsi_host_alloc(&ibmmca_driver_template
,
1560 sizeof(struct ibmmca_hostdata
));
1562 printk(KERN_ERR
"IBM MCA SCSI: Unable to register host.\n");
1566 dev_set_drvdata(dev
, shpnt
);
1567 if(request_irq(irq
, interrupt_handler
, IRQF_SHARED
, description
, dev
)) {
1568 printk(KERN_ERR
"IBM MCA SCSI: failed to request interrupt %d\n", irq
);
1572 /* request I/O region */
1573 special(shpnt
) = mca_dev
->index
; /* important assignment or else crash! */
1574 subsystem_connector_size(shpnt
) = 0; /* preset slot-size */
1575 shpnt
->irq
= irq
; /* assign necessary stuff for the adapter */
1576 shpnt
->io_port
= port
;
1577 shpnt
->n_io_port
= IM_N_IO_PORT
;
1578 shpnt
->this_id
= id
;
1579 shpnt
->max_id
= 8; /* 8 PUNs are default */
1580 /* now, the SCSI-subsystem is connected to Linux */
1582 #ifdef IM_DEBUG_PROBE
1583 ctrl
= (unsigned int) (inb(IM_CTR_REG(found
))); /* get control-register status */
1584 printk("IBM MCA SCSI: Control Register contents: %x, status: %x\n", ctrl
, inb(IM_STAT_REG(found
)));
1585 printk("IBM MCA SCSI: This adapters' POS-registers: ");
1586 for (i
= 0; i
< 8; i
++)
1587 printk("%x ", pos
[i
]);
1590 reset_status(shpnt
) = IM_RESET_NOT_IN_PROGRESS
;
1592 for (i
= 0; i
< 16; i
++) /* reset the tables */
1593 for (j
= 0; j
< 8; j
++)
1594 get_ldn(shpnt
)[i
][j
] = MAX_LOG_DEV
;
1596 /* check which logical devices exist */
1597 /* after this line, local interrupting is possible: */
1598 local_checking_phase_flag(shpnt
) = 1;
1599 check_devices(shpnt
, mca_dev
->index
); /* call by value, using the global variable hosts */
1600 local_checking_phase_flag(shpnt
) = 0;
1602 /* an ibm mca subsystem has been detected */
1604 for (k
= 2; k
< 7; k
++)
1605 ((struct ibmmca_hostdata
*) shpnt
->hostdata
)->_pos
[k
] = pos
[k
];
1606 ((struct ibmmca_hostdata
*) shpnt
->hostdata
)->_special
= INTEGRATED_SCSI
;
1607 mca_device_set_name(mca_dev
, description
);
1608 mca_device_set_claim(mca_dev
, 1);
1609 if (scsi_add_host(shpnt
, dev
)) {
1610 dev_printk(KERN_ERR
, dev
, "IBM MCA SCSI: scsi_add_host failed\n");
1613 scsi_scan_host(shpnt
);
1617 scsi_host_put(shpnt
);
1619 release_region(port
, IM_N_IO_PORT
);
1624 static int __devexit
ibmmca_remove(struct device
*dev
)
1626 struct Scsi_Host
*shpnt
= dev_get_drvdata(dev
);
1627 scsi_remove_host(shpnt
);
1628 release_region(shpnt
->io_port
, shpnt
->n_io_port
);
1629 free_irq(shpnt
->irq
, dev
);
1630 scsi_host_put(shpnt
);
1634 /* The following routine is the SCSI command queue for the midlevel driver */
1635 static int ibmmca_queuecommand(Scsi_Cmnd
* cmd
, void (*done
) (Scsi_Cmnd
*))
1638 unsigned int scsi_cmd
;
1640 struct Scsi_Host
*shpnt
;
1646 struct scatterlist
*sg
;
1648 shpnt
= cmd
->device
->host
;
1650 max_pun
= subsystem_maxid(shpnt
);
1651 if (ibm_ansi_order
) {
1652 target
= max_pun
- 1 - cmd
->device
->id
;
1653 if ((target
<= subsystem_pun(shpnt
)) && (cmd
->device
->id
<= subsystem_pun(shpnt
)))
1655 else if ((target
>= subsystem_pun(shpnt
)) && (cmd
->device
->id
>= subsystem_pun(shpnt
)))
1658 target
= cmd
->device
->id
;
1660 /* if (target,lun) is NO LUN or not existing at all, return error */
1661 if ((get_scsi(shpnt
)[target
][cmd
->device
->lun
] == TYPE_NO_LUN
) || (get_scsi(shpnt
)[target
][cmd
->device
->lun
] == TYPE_NO_DEVICE
)) {
1662 cmd
->result
= DID_NO_CONNECT
<< 16;
1668 /*if (target,lun) unassigned, do further checks... */
1669 ldn
= get_ldn(shpnt
)[target
][cmd
->device
->lun
];
1670 if (ldn
>= MAX_LOG_DEV
) { /* on invalid ldn do special stuff */
1671 if (ldn
> MAX_LOG_DEV
) { /* dynamical remapping if ldn unassigned */
1672 current_ldn
= next_ldn(shpnt
); /* stop-value for one circle */
1673 while (ld(shpnt
)[next_ldn(shpnt
)].cmd
) { /* search for a occupied, but not in */
1674 /* command-processing ldn. */
1676 if (next_ldn(shpnt
) >= MAX_LOG_DEV
)
1677 next_ldn(shpnt
) = 7;
1678 if (current_ldn
== next_ldn(shpnt
)) { /* One circle done ? */
1679 /* no non-processing ldn found */
1680 scmd_printk(KERN_WARNING
, cmd
,
1681 "IBM MCA SCSI: Cannot assign SCSI-device dynamically!\n"
1682 " On ldn 7-14 SCSI-commands everywhere in progress.\n"
1683 " Reporting DID_NO_CONNECT for device.\n");
1684 cmd
->result
= DID_NO_CONNECT
<< 16; /* return no connect */
1691 /* unmap non-processing ldn */
1692 for (id
= 0; id
< max_pun
; id
++)
1693 for (lun
= 0; lun
< 8; lun
++) {
1694 if (get_ldn(shpnt
)[id
][lun
] == next_ldn(shpnt
)) {
1695 get_ldn(shpnt
)[id
][lun
] = TYPE_NO_DEVICE
;
1696 get_scsi(shpnt
)[id
][lun
] = TYPE_NO_DEVICE
;
1700 /* set reduced interrupt_handler-mode for checking */
1701 local_checking_phase_flag(shpnt
) = 1;
1702 /* map found ldn to pun,lun */
1703 get_ldn(shpnt
)[target
][cmd
->device
->lun
] = next_ldn(shpnt
);
1704 /* change ldn to the right value, that is now next_ldn */
1705 ldn
= next_ldn(shpnt
);
1706 /* unassign all ldns (pun,lun,ldn does not matter for remove) */
1707 immediate_assign(shpnt
, 0, 0, 0, REMOVE_LDN
);
1708 /* set only LDN for remapped device */
1709 immediate_assign(shpnt
, target
, cmd
->device
->lun
, ldn
, SET_LDN
);
1710 /* get device information for ld[ldn] */
1711 if (device_exists(shpnt
, ldn
, &ld(shpnt
)[ldn
].block_length
, &ld(shpnt
)[ldn
].device_type
)) {
1712 ld(shpnt
)[ldn
].cmd
= NULL
; /* To prevent panic set 0, because
1713 devices that were not assigned,
1714 should have nothing in progress. */
1715 get_scsi(shpnt
)[target
][cmd
->device
->lun
] = ld(shpnt
)[ldn
].device_type
;
1716 /* increase assignment counters for statistics in /proc */
1717 IBM_DS(shpnt
).dynamical_assignments
++;
1718 IBM_DS(shpnt
).ldn_assignments
[ldn
]++;
1720 /* panic here, because a device, found at boottime has
1722 panic("IBM MCA SCSI: ldn=0x%x, SCSI-device on (%d,%d) vanished!\n", ldn
, target
, cmd
->device
->lun
);
1723 /* unassign again all ldns (pun,lun,ldn does not matter for remove) */
1724 immediate_assign(shpnt
, 0, 0, 0, REMOVE_LDN
);
1725 /* remap all ldns, as written in the pun/lun table */
1727 #ifdef CONFIG_SCSI_MULTI_LUN
1728 for (lun
= 0; lun
< 8; lun
++)
1730 for (id
= 0; id
< max_pun
; id
++) {
1731 if (get_ldn(shpnt
)[id
][lun
] <= MAX_LOG_DEV
)
1732 immediate_assign(shpnt
, id
, lun
, get_ldn(shpnt
)[id
][lun
], SET_LDN
);
1734 /* set back to normal interrupt_handling */
1735 local_checking_phase_flag(shpnt
) = 0;
1736 #ifdef IM_DEBUG_PROBE
1737 /* Information on syslog terminal */
1738 printk("IBM MCA SCSI: ldn=0x%x dynamically reassigned to (%d,%d).\n", ldn
, target
, cmd
->device
->lun
);
1740 /* increase next_ldn for next dynamical assignment */
1742 if (next_ldn(shpnt
) >= MAX_LOG_DEV
)
1743 next_ldn(shpnt
) = 7;
1744 } else { /* wall against Linux accesses to the subsystem adapter */
1745 cmd
->result
= DID_BAD_TARGET
<< 16;
1752 /*verify there is no command already in progress for this log dev */
1753 if (ld(shpnt
)[ldn
].cmd
)
1754 panic("IBM MCA SCSI: cmd already in progress for this ldn.\n");
1756 /*save done in cmd, and save cmd for the interrupt handler */
1757 cmd
->scsi_done
= done
;
1758 ld(shpnt
)[ldn
].cmd
= cmd
;
1760 /*fill scb information independent of the scsi command */
1761 scb
= &(ld(shpnt
)[ldn
].scb
);
1762 ld(shpnt
)[ldn
].tsb
.dev_status
= 0;
1763 scb
->enable
= IM_REPORT_TSB_ONLY_ON_ERROR
| IM_RETRY_ENABLE
;
1764 scb
->tsb_adr
= isa_virt_to_bus(&(ld(shpnt
)[ldn
].tsb
));
1765 scsi_cmd
= cmd
->cmnd
[0];
1767 if (scsi_sg_count(cmd
)) {
1768 BUG_ON(scsi_sg_count(cmd
) > 16);
1770 scsi_for_each_sg(cmd
, sg
, scsi_sg_count(cmd
), i
) {
1771 ld(shpnt
)[ldn
].sge
[i
].address
= (void *) (isa_page_to_bus(sg_page(sg
)) + sg
->offset
);
1772 ld(shpnt
)[ldn
].sge
[i
].byte_length
= sg
->length
;
1774 scb
->enable
|= IM_POINTER_TO_LIST
;
1775 scb
->sys_buf_adr
= isa_virt_to_bus(&(ld(shpnt
)[ldn
].sge
[0]));
1776 scb
->sys_buf_length
= scsi_sg_count(cmd
) * sizeof(struct im_sge
);
1778 scb
->sys_buf_adr
= isa_virt_to_bus(scsi_sglist(cmd
));
1779 /* recent Linux midlevel SCSI places 1024 byte for inquiry
1780 * command. Far too much for old PS/2 hardware. */
1782 /* avoid command errors by setting bufferlengths to
1783 * ANSI-standard. Beware of forcing it to 255,
1784 * this could SEGV the kernel!!! */
1789 if (scsi_bufflen(cmd
) > 255)
1790 scb
->sys_buf_length
= 255;
1792 scb
->sys_buf_length
= scsi_bufflen(cmd
);
1794 case TEST_UNIT_READY
:
1795 scb
->sys_buf_length
= 0;
1798 scb
->sys_buf_length
= scsi_bufflen(cmd
);
1802 /*fill scb information dependent on scsi command */
1805 printk("issue scsi cmd=%02x to ldn=%d\n", scsi_cmd
, ldn
);
1808 /* for specific device-type debugging: */
1809 #ifdef IM_DEBUG_CMD_SPEC_DEV
1810 if (ld(shpnt
)[ldn
].device_type
== IM_DEBUG_CMD_DEVICE
)
1811 printk("(SCSI-device-type=0x%x) issue scsi cmd=%02x to ldn=%d\n", ld(shpnt
)[ldn
].device_type
, scsi_cmd
, ldn
);
1814 /* for possible panics store current command */
1815 last_scsi_command(shpnt
)[ldn
] = scsi_cmd
;
1816 last_scsi_type(shpnt
)[ldn
] = IM_SCB
;
1817 /* update statistical info */
1818 IBM_DS(shpnt
).total_accesses
++;
1819 IBM_DS(shpnt
).ldn_access
[ldn
]++;
1828 /* Distinguish between disk and other devices. Only disks (that are the
1829 most frequently accessed devices) should be supported by the
1830 IBM-SCSI-Subsystem commands. */
1831 switch (ld(shpnt
)[ldn
].device_type
) {
1832 case TYPE_DISK
: /* for harddisks enter here ... */
1833 case TYPE_MOD
: /* ... try it also for MO-drives (send flames as */
1834 /* you like, if this won't work.) */
1835 if (scsi_cmd
== READ_6
|| scsi_cmd
== READ_10
|| scsi_cmd
== READ_12
) {
1836 /* read command preparations */
1837 scb
->enable
|= IM_READ_CONTROL
;
1838 IBM_DS(shpnt
).ldn_read_access
[ldn
]++; /* increase READ-access on ldn stat. */
1839 scb
->command
= IM_READ_DATA_CMD
| IM_NO_DISCONNECT
;
1840 } else { /* write command preparations */
1841 IBM_DS(shpnt
).ldn_write_access
[ldn
]++; /* increase write-count on ldn stat. */
1842 scb
->command
= IM_WRITE_DATA_CMD
| IM_NO_DISCONNECT
;
1844 if (scsi_cmd
== READ_6
|| scsi_cmd
== WRITE_6
) {
1845 scb
->u1
.log_blk_adr
= (((unsigned) cmd
->cmnd
[3]) << 0) | (((unsigned) cmd
->cmnd
[2]) << 8) | ((((unsigned) cmd
->cmnd
[1]) & 0x1f) << 16);
1846 scb
->u2
.blk
.count
= (unsigned) cmd
->cmnd
[4];
1848 scb
->u1
.log_blk_adr
= (((unsigned) cmd
->cmnd
[5]) << 0) | (((unsigned) cmd
->cmnd
[4]) << 8) | (((unsigned) cmd
->cmnd
[3]) << 16) | (((unsigned) cmd
->cmnd
[2]) << 24);
1849 scb
->u2
.blk
.count
= (((unsigned) cmd
->cmnd
[8]) << 0) | (((unsigned) cmd
->cmnd
[7]) << 8);
1851 last_scsi_logical_block(shpnt
)[ldn
] = scb
->u1
.log_blk_adr
;
1852 last_scsi_blockcount(shpnt
)[ldn
] = scb
->u2
.blk
.count
;
1853 scb
->u2
.blk
.length
= ld(shpnt
)[ldn
].block_length
;
1855 /* for other devices, enter here. Other types are not known by
1856 Linux! TYPE_NO_LUN is forbidden as valid device. */
1859 case TYPE_PROCESSOR
:
1862 case TYPE_MEDIUM_CHANGER
:
1863 /* If there is a sequential-device, IBM recommends to use
1864 IM_OTHER_SCSI_CMD_CMD instead of subsystem READ/WRITE.
1865 This includes CD-ROM devices, too, due to the partial sequential
1866 read capabilities. */
1867 scb
->command
= IM_OTHER_SCSI_CMD_CMD
;
1868 if (scsi_cmd
== READ_6
|| scsi_cmd
== READ_10
|| scsi_cmd
== READ_12
)
1870 scb
->enable
|= IM_READ_CONTROL
;
1871 scb
->enable
|= IM_BYPASS_BUFFER
;
1872 scb
->u1
.scsi_cmd_length
= cmd
->cmd_len
;
1873 memcpy(scb
->u2
.scsi_command
, cmd
->cmnd
, cmd
->cmd_len
);
1874 last_scsi_type(shpnt
)[ldn
] = IM_LONG_SCB
;
1875 /* Read/write on this non-disk devices is also displayworthy,
1876 so flash-up the LED/display. */
1881 IBM_DS(shpnt
).ldn_inquiry_access
[ldn
]++;
1882 scb
->command
= IM_DEVICE_INQUIRY_CMD
;
1883 scb
->enable
|= IM_READ_CONTROL
| IM_SUPRESS_EXCEPTION_SHORT
| IM_BYPASS_BUFFER
;
1884 scb
->u1
.log_blk_adr
= 0;
1886 case TEST_UNIT_READY
:
1887 scb
->command
= IM_OTHER_SCSI_CMD_CMD
;
1888 scb
->enable
|= IM_READ_CONTROL
| IM_SUPRESS_EXCEPTION_SHORT
| IM_BYPASS_BUFFER
;
1889 scb
->u1
.log_blk_adr
= 0;
1890 scb
->u1
.scsi_cmd_length
= 6;
1891 memcpy(scb
->u2
.scsi_command
, cmd
->cmnd
, 6);
1892 last_scsi_type(shpnt
)[ldn
] = IM_LONG_SCB
;
1895 /* the length of system memory buffer must be exactly 8 bytes */
1896 scb
->command
= IM_READ_CAPACITY_CMD
;
1897 scb
->enable
|= IM_READ_CONTROL
| IM_BYPASS_BUFFER
;
1898 if (scb
->sys_buf_length
> 8)
1899 scb
->sys_buf_length
= 8;
1901 /* Commands that need read-only-mode (system <- device): */
1903 scb
->command
= IM_REQUEST_SENSE_CMD
;
1904 scb
->enable
|= IM_READ_CONTROL
| IM_SUPRESS_EXCEPTION_SHORT
| IM_BYPASS_BUFFER
;
1906 /* Commands that need write-only-mode (system -> device): */
1908 case MODE_SELECT_10
:
1909 IBM_DS(shpnt
).ldn_modeselect_access
[ldn
]++;
1910 scb
->command
= IM_OTHER_SCSI_CMD_CMD
;
1911 scb
->enable
|= IM_SUPRESS_EXCEPTION_SHORT
| IM_BYPASS_BUFFER
; /*Select needs WRITE-enabled */
1912 scb
->u1
.scsi_cmd_length
= cmd
->cmd_len
;
1913 memcpy(scb
->u2
.scsi_command
, cmd
->cmnd
, cmd
->cmd_len
);
1914 last_scsi_type(shpnt
)[ldn
] = IM_LONG_SCB
;
1916 /* For other commands, read-only is useful. Most other commands are
1917 running without an input-data-block. */
1919 scb
->command
= IM_OTHER_SCSI_CMD_CMD
;
1920 scb
->enable
|= IM_READ_CONTROL
| IM_SUPRESS_EXCEPTION_SHORT
| IM_BYPASS_BUFFER
;
1921 scb
->u1
.scsi_cmd_length
= cmd
->cmd_len
;
1922 memcpy(scb
->u2
.scsi_command
, cmd
->cmnd
, cmd
->cmd_len
);
1923 last_scsi_type(shpnt
)[ldn
] = IM_LONG_SCB
;
1926 /*issue scb command, and return */
1927 if (++disk_rw_in_progress
== 1)
1928 PS2_DISK_LED_ON(shpnt
->host_no
, target
);
1930 if (last_scsi_type(shpnt
)[ldn
] == IM_LONG_SCB
) {
1931 issue_cmd(shpnt
, isa_virt_to_bus(scb
), IM_LONG_SCB
| ldn
);
1932 IBM_DS(shpnt
).long_scbs
++;
1934 issue_cmd(shpnt
, isa_virt_to_bus(scb
), IM_SCB
| ldn
);
1935 IBM_DS(shpnt
).scbs
++;
1940 static int __ibmmca_abort(Scsi_Cmnd
* cmd
)
1942 /* Abort does not work, as the adapter never generates an interrupt on
1943 * whatever situation is simulated, even when really pending commands
1944 * are running on the adapters' hardware ! */
1946 struct Scsi_Host
*shpnt
;
1948 void (*saved_done
) (Scsi_Cmnd
*);
1951 unsigned long imm_command
;
1953 #ifdef IM_DEBUG_PROBE
1954 printk("IBM MCA SCSI: Abort subroutine called...\n");
1957 shpnt
= cmd
->device
->host
;
1959 max_pun
= subsystem_maxid(shpnt
);
1960 if (ibm_ansi_order
) {
1961 target
= max_pun
- 1 - cmd
->device
->id
;
1962 if ((target
<= subsystem_pun(shpnt
)) && (cmd
->device
->id
<= subsystem_pun(shpnt
)))
1964 else if ((target
>= subsystem_pun(shpnt
)) && (cmd
->device
->id
>= subsystem_pun(shpnt
)))
1967 target
= cmd
->device
->id
;
1969 /* get logical device number, and disable system interrupts */
1970 printk(KERN_WARNING
"IBM MCA SCSI: Sending abort to device pun=%d, lun=%d.\n", target
, cmd
->device
->lun
);
1971 ldn
= get_ldn(shpnt
)[target
][cmd
->device
->lun
];
1973 /*if cmd for this ldn has already finished, no need to abort */
1974 if (!ld(shpnt
)[ldn
].cmd
) {
1978 /* Clear ld.cmd, save done function, install internal done,
1979 * send abort immediate command (this enables sys. interrupts),
1980 * and wait until the interrupt arrives.
1982 saved_done
= cmd
->scsi_done
;
1983 cmd
->scsi_done
= internal_done
;
1984 cmd
->SCp
.Status
= 0;
1985 last_scsi_command(shpnt
)[ldn
] = IM_ABORT_IMM_CMD
;
1986 last_scsi_type(shpnt
)[ldn
] = IM_IMM_CMD
;
1987 imm_command
= inl(IM_CMD_REG(shpnt
));
1988 imm_command
&= (unsigned long) (0xffff0000); /* mask reserved stuff */
1989 imm_command
|= (unsigned long) (IM_ABORT_IMM_CMD
);
1990 /* must wait for attention reg not busy */
1992 if (!(inb(IM_STAT_REG(shpnt
)) & IM_BUSY
))
1995 /* write registers and enable system interrupts */
1996 outl(imm_command
, IM_CMD_REG(shpnt
));
1997 outb(IM_IMM_CMD
| ldn
, IM_ATTN_REG(shpnt
));
1998 #ifdef IM_DEBUG_PROBE
1999 printk("IBM MCA SCSI: Abort queued to adapter...\n");
2001 spin_unlock_irq(shpnt
->host_lock
);
2002 while (!cmd
->SCp
.Status
)
2004 spin_lock_irq(shpnt
->host_lock
);
2005 cmd
->scsi_done
= saved_done
;
2006 #ifdef IM_DEBUG_PROBE
2007 printk("IBM MCA SCSI: Abort returned with adapter response...\n");
2010 /*if abort went well, call saved done, then return success or error */
2011 if (cmd
->result
== (DID_ABORT
<< 16))
2013 cmd
->result
|= DID_ABORT
<< 16;
2015 (cmd
->scsi_done
) (cmd
);
2016 ld(shpnt
)[ldn
].cmd
= NULL
;
2017 #ifdef IM_DEBUG_PROBE
2018 printk("IBM MCA SCSI: Abort finished with success.\n");
2022 cmd
->result
|= DID_NO_CONNECT
<< 16;
2024 (cmd
->scsi_done
) (cmd
);
2025 ld(shpnt
)[ldn
].cmd
= NULL
;
2026 #ifdef IM_DEBUG_PROBE
2027 printk("IBM MCA SCSI: Abort failed.\n");
2033 static int ibmmca_abort(Scsi_Cmnd
* cmd
)
2035 struct Scsi_Host
*shpnt
= cmd
->device
->host
;
2038 spin_lock_irq(shpnt
->host_lock
);
2039 rc
= __ibmmca_abort(cmd
);
2040 spin_unlock_irq(shpnt
->host_lock
);
2045 static int __ibmmca_host_reset(Scsi_Cmnd
* cmd
)
2047 struct Scsi_Host
*shpnt
;
2050 unsigned long imm_command
;
2052 BUG_ON(cmd
== NULL
);
2054 ticks
= IM_RESET_DELAY
* HZ
;
2055 shpnt
= cmd
->device
->host
;
2057 if (local_checking_phase_flag(shpnt
)) {
2058 printk(KERN_WARNING
"IBM MCA SCSI: unable to reset while checking devices.\n");
2062 /* issue reset immediate command to subsystem, and wait for interrupt */
2063 printk("IBM MCA SCSI: resetting all devices.\n");
2064 reset_status(shpnt
) = IM_RESET_IN_PROGRESS
;
2065 last_scsi_command(shpnt
)[0xf] = IM_RESET_IMM_CMD
;
2066 last_scsi_type(shpnt
)[0xf] = IM_IMM_CMD
;
2067 imm_command
= inl(IM_CMD_REG(shpnt
));
2068 imm_command
&= (unsigned long) (0xffff0000); /* mask reserved stuff */
2069 imm_command
|= (unsigned long) (IM_RESET_IMM_CMD
);
2070 /* must wait for attention reg not busy */
2072 if (!(inb(IM_STAT_REG(shpnt
)) & IM_BUSY
))
2074 spin_unlock_irq(shpnt
->host_lock
);
2076 spin_lock_irq(shpnt
->host_lock
);
2078 /*write registers and enable system interrupts */
2079 outl(imm_command
, IM_CMD_REG(shpnt
));
2080 outb(IM_IMM_CMD
| 0xf, IM_ATTN_REG(shpnt
));
2081 /* wait for interrupt finished or intr_stat register to be set, as the
2082 * interrupt will not be executed, while we are in here! */
2084 while (reset_status(shpnt
) == IM_RESET_IN_PROGRESS
&& --ticks
&& ((inb(IM_INTR_REG(shpnt
)) & 0x8f) != 0x8f)) {
2085 udelay((1 + 999 / HZ
) * 1000);
2088 /* if reset did not complete, just return an error */
2090 printk(KERN_ERR
"IBM MCA SCSI: reset did not complete within %d seconds.\n", IM_RESET_DELAY
);
2091 reset_status(shpnt
) = IM_RESET_FINISHED_FAIL
;
2095 if ((inb(IM_INTR_REG(shpnt
)) & 0x8f) == 0x8f) {
2096 /* analysis done by this routine and not by the intr-routine */
2097 if (inb(IM_INTR_REG(shpnt
)) == 0xaf)
2098 reset_status(shpnt
) = IM_RESET_FINISHED_OK_NO_INT
;
2099 else if (inb(IM_INTR_REG(shpnt
)) == 0xcf)
2100 reset_status(shpnt
) = IM_RESET_FINISHED_FAIL
;
2101 else /* failed, 4get it */
2102 reset_status(shpnt
) = IM_RESET_NOT_IN_PROGRESS_NO_INT
;
2103 outb(IM_EOI
| 0xf, IM_ATTN_REG(shpnt
));
2106 /* if reset failed, just return an error */
2107 if (reset_status(shpnt
) == IM_RESET_FINISHED_FAIL
) {
2108 printk(KERN_ERR
"IBM MCA SCSI: reset failed.\n");
2112 /* so reset finished ok - call outstanding done's, and return success */
2113 printk(KERN_INFO
"IBM MCA SCSI: Reset successfully completed.\n");
2114 for (i
= 0; i
< MAX_LOG_DEV
; i
++) {
2115 cmd_aid
= ld(shpnt
)[i
].cmd
;
2116 if (cmd_aid
&& cmd_aid
->scsi_done
) {
2117 ld(shpnt
)[i
].cmd
= NULL
;
2118 cmd_aid
->result
= DID_RESET
<< 16;
2124 static int ibmmca_host_reset(Scsi_Cmnd
* cmd
)
2126 struct Scsi_Host
*shpnt
= cmd
->device
->host
;
2129 spin_lock_irq(shpnt
->host_lock
);
2130 rc
= __ibmmca_host_reset(cmd
);
2131 spin_unlock_irq(shpnt
->host_lock
);
2136 static int ibmmca_biosparam(struct scsi_device
*sdev
, struct block_device
*bdev
, sector_t capacity
, int *info
)
2138 int size
= capacity
;
2141 info
[2] = size
/ (info
[0] * info
[1]);
2142 if (info
[2] >= 1024) {
2145 info
[2] = size
/ (info
[0] * info
[1]);
2146 if (info
[2] >= 1024) {
2149 info
[2] = size
/ (info
[0] * info
[1]);
2150 if (info
[2] >= 1024)
2157 /* calculate percentage of total accesses on a ldn */
2158 static int ldn_access_load(struct Scsi_Host
*shpnt
, int ldn
)
2160 if (IBM_DS(shpnt
).total_accesses
== 0)
2162 if (IBM_DS(shpnt
).ldn_access
[ldn
] == 0)
2164 return (IBM_DS(shpnt
).ldn_access
[ldn
] * 100) / IBM_DS(shpnt
).total_accesses
;
2167 /* calculate total amount of r/w-accesses */
2168 static int ldn_access_total_read_write(struct Scsi_Host
*shpnt
)
2174 for (i
= 0; i
<= MAX_LOG_DEV
; i
++)
2175 a
+= IBM_DS(shpnt
).ldn_read_access
[i
] + IBM_DS(shpnt
).ldn_write_access
[i
];
2179 static int ldn_access_total_inquiry(struct Scsi_Host
*shpnt
)
2185 for (i
= 0; i
<= MAX_LOG_DEV
; i
++)
2186 a
+= IBM_DS(shpnt
).ldn_inquiry_access
[i
];
2190 static int ldn_access_total_modeselect(struct Scsi_Host
*shpnt
)
2196 for (i
= 0; i
<= MAX_LOG_DEV
; i
++)
2197 a
+= IBM_DS(shpnt
).ldn_modeselect_access
[i
];
2201 /* routine to display info in the proc-fs-structure (a deluxe feature) */
2202 static int ibmmca_proc_info(struct Scsi_Host
*shpnt
, char *buffer
, char **start
, off_t offset
, int length
, int inout
)
2206 unsigned long flags
;
2210 spin_lock_irqsave(shpnt
->host_lock
, flags
); /* Check it */
2212 max_pun
= subsystem_maxid(shpnt
);
2214 len
+= sprintf(buffer
+ len
, "\n IBM-SCSI-Subsystem-Linux-Driver, Version %s\n\n\n", IBMMCA_SCSI_DRIVER_VERSION
);
2215 len
+= sprintf(buffer
+ len
, " SCSI Access-Statistics:\n");
2216 len
+= sprintf(buffer
+ len
, " Device Scanning Order....: %s\n", (ibm_ansi_order
) ? "IBM/ANSI" : "New Industry Standard");
2217 #ifdef CONFIG_SCSI_MULTI_LUN
2218 len
+= sprintf(buffer
+ len
, " Multiple LUN probing.....: Yes\n");
2220 len
+= sprintf(buffer
+ len
, " Multiple LUN probing.....: No\n");
2222 len
+= sprintf(buffer
+ len
, " This Hostnumber..........: %d\n", shpnt
->host_no
);
2223 len
+= sprintf(buffer
+ len
, " Base I/O-Port............: 0x%x\n", (unsigned int) (IM_CMD_REG(shpnt
)));
2224 len
+= sprintf(buffer
+ len
, " (Shared) IRQ.............: %d\n", IM_IRQ
);
2225 len
+= sprintf(buffer
+ len
, " Total Interrupts.........: %d\n", IBM_DS(shpnt
).total_interrupts
);
2226 len
+= sprintf(buffer
+ len
, " Total SCSI Accesses......: %d\n", IBM_DS(shpnt
).total_accesses
);
2227 len
+= sprintf(buffer
+ len
, " Total short SCBs.........: %d\n", IBM_DS(shpnt
).scbs
);
2228 len
+= sprintf(buffer
+ len
, " Total long SCBs..........: %d\n", IBM_DS(shpnt
).long_scbs
);
2229 len
+= sprintf(buffer
+ len
, " Total SCSI READ/WRITE..: %d\n", ldn_access_total_read_write(shpnt
));
2230 len
+= sprintf(buffer
+ len
, " Total SCSI Inquiries...: %d\n", ldn_access_total_inquiry(shpnt
));
2231 len
+= sprintf(buffer
+ len
, " Total SCSI Modeselects.: %d\n", ldn_access_total_modeselect(shpnt
));
2232 len
+= sprintf(buffer
+ len
, " Total SCSI other cmds..: %d\n", IBM_DS(shpnt
).total_accesses
- ldn_access_total_read_write(shpnt
)
2233 - ldn_access_total_modeselect(shpnt
)
2234 - ldn_access_total_inquiry(shpnt
));
2235 len
+= sprintf(buffer
+ len
, " Total SCSI command fails.: %d\n\n", IBM_DS(shpnt
).total_errors
);
2236 len
+= sprintf(buffer
+ len
, " Logical-Device-Number (LDN) Access-Statistics:\n");
2237 len
+= sprintf(buffer
+ len
, " LDN | Accesses [%%] | READ | WRITE | ASSIGNMENTS\n");
2238 len
+= sprintf(buffer
+ len
, " -----|--------------|-----------|-----------|--------------\n");
2239 for (i
= 0; i
<= MAX_LOG_DEV
; i
++)
2240 len
+= sprintf(buffer
+ len
, " %2X | %3d | %8d | %8d | %8d\n", i
, ldn_access_load(shpnt
, i
), IBM_DS(shpnt
).ldn_read_access
[i
], IBM_DS(shpnt
).ldn_write_access
[i
], IBM_DS(shpnt
).ldn_assignments
[i
]);
2241 len
+= sprintf(buffer
+ len
, " -----------------------------------------------------------\n\n");
2242 len
+= sprintf(buffer
+ len
, " Dynamical-LDN-Assignment-Statistics:\n");
2243 len
+= sprintf(buffer
+ len
, " Number of physical SCSI-devices..: %d (+ Adapter)\n", IBM_DS(shpnt
).total_scsi_devices
);
2244 len
+= sprintf(buffer
+ len
, " Dynamical Assignment necessary...: %s\n", IBM_DS(shpnt
).dyn_flag
? "Yes" : "No ");
2245 len
+= sprintf(buffer
+ len
, " Next LDN to be assigned..........: 0x%x\n", next_ldn(shpnt
));
2246 len
+= sprintf(buffer
+ len
, " Dynamical assignments done yet...: %d\n", IBM_DS(shpnt
).dynamical_assignments
);
2247 len
+= sprintf(buffer
+ len
, "\n Current SCSI-Device-Mapping:\n");
2248 len
+= sprintf(buffer
+ len
, " Physical SCSI-Device Map Logical SCSI-Device Map\n");
2249 len
+= sprintf(buffer
+ len
, " ID\\LUN 0 1 2 3 4 5 6 7 ID\\LUN 0 1 2 3 4 5 6 7\n");
2250 for (id
= 0; id
< max_pun
; id
++) {
2251 len
+= sprintf(buffer
+ len
, " %2d ", id
);
2252 for (lun
= 0; lun
< 8; lun
++)
2253 len
+= sprintf(buffer
+ len
, "%2s ", ti_p(get_scsi(shpnt
)[id
][lun
]));
2254 len
+= sprintf(buffer
+ len
, " %2d ", id
);
2255 for (lun
= 0; lun
< 8; lun
++)
2256 len
+= sprintf(buffer
+ len
, "%2s ", ti_l(get_ldn(shpnt
)[id
][lun
]));
2257 len
+= sprintf(buffer
+ len
, "\n");
2260 len
+= sprintf(buffer
+ len
, "(A = IBM-Subsystem, D = Harddisk, T = Tapedrive, P = Processor, W = WORM,\n");
2261 len
+= sprintf(buffer
+ len
, " R = CD-ROM, S = Scanner, M = MO-Drive, C = Medium-Changer, + = unprovided LUN,\n");
2262 len
+= sprintf(buffer
+ len
, " - = nothing found, nothing assigned or unprobed LUN)\n\n");
2264 *start
= buffer
+ offset
;
2268 spin_unlock_irqrestore(shpnt
->host_lock
, flags
);
2272 static int option_setup(char *str
)
2274 int ints
[IM_MAX_HOSTS
];
2278 while (cur
&& isdigit(*cur
) && i
< IM_MAX_HOSTS
) {
2279 ints
[i
++] = simple_strtoul(cur
, NULL
, 0);
2280 if ((cur
= strchr(cur
, ',')) != NULL
)
2284 internal_ibmmca_scsi_setup(cur
, ints
);
2288 __setup("ibmmcascsi=", option_setup
);
2290 static struct mca_driver ibmmca_driver
= {
2291 .id_table
= ibmmca_id_table
,
2294 .bus
= &mca_bus_type
,
2295 .probe
= ibmmca_probe
,
2296 .remove
= __devexit_p(ibmmca_remove
),
2300 static int __init
ibmmca_init(void)
2303 /* If the driver is run as module, read from conf.modules or cmd-line */
2305 option_setup(boot_options
);
2308 return mca_register_driver_integrated(&ibmmca_driver
, MCA_INTEGSCSI
);
2311 static void __exit
ibmmca_exit(void)
2313 mca_unregister_driver(&ibmmca_driver
);
2316 module_init(ibmmca_init
);
2317 module_exit(ibmmca_exit
);