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1da177e4 LT |
1 | /* |
2 | Low Level Linux Driver for the IBM Microchannel SCSI Subsystem for | |
3 | Linux Kernel >= 2.4.0. | |
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 | |
9 | development. | |
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. | |
12 | ||
fa195afe | 13 | Alan Cox <alan@lxorguk.ukuu.org.uk> |
1da177e4 LT |
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. | |
17 | ||
18 | */ | |
19 | ||
1da177e4 LT |
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> | |
1da177e4 LT |
32 | #include <linux/spinlock.h> |
33 | #include <linux/init.h> | |
1da177e4 LT |
34 | |
35 | #include <asm/system.h> | |
36 | #include <asm/io.h> | |
37 | ||
38 | #include "scsi.h" | |
39 | #include <scsi/scsi_host.h> | |
67b2009a JB |
40 | |
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); | |
47 | ||
48 | ||
1da177e4 LT |
49 | |
50 | /* current version of this driver-source: */ | |
51 | #define IBMMCA_SCSI_DRIVER_VERSION "4.0b-ac" | |
52 | ||
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 */ | |
56 | ||
57 | /* driver debugging - #undef all for normal operation */ | |
58 | /* if defined: count interrupts and ignore this special one: */ | |
59 | #undef IM_DEBUG_TIMEOUT //50 | |
60 | #define TIMEOUT_PUN 0 | |
61 | #define TIMEOUT_LUN 0 | |
62 | /* verbose interrupt: */ | |
63 | #undef IM_DEBUG_INT | |
64 | /* verbose queuecommand: */ | |
65 | #undef IM_DEBUG_CMD | |
66 | /* verbose queucommand for specific SCSI-device type: */ | |
67 | #undef IM_DEBUG_CMD_SPEC_DEV | |
68 | /* verbose device probing */ | |
69 | #undef IM_DEBUG_PROBE | |
70 | ||
71 | /* device type that shall be displayed on syslog (only during debugging): */ | |
72 | #define IM_DEBUG_CMD_DEVICE TYPE_TAPE | |
73 | ||
74 | /* relative addresses of hardware registers on a subsystem */ | |
67b2009a JB |
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) */ | |
1da177e4 LT |
80 | |
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 | |
85 | ||
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 */ | |
92 | ||
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 */ | |
97 | ||
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 | |
108 | ||
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 | |
113 | #define IM_BUSY 0x01 | |
114 | ||
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 | |
122 | ||
123 | /*SCB (Subsystem Control Block) structure */ | |
124 | struct im_scb { | |
125 | unsigned short command; /*command word (read, etc.) */ | |
126 | unsigned short enable; /*enable word, modifies cmd */ | |
127 | union { | |
128 | unsigned long log_blk_adr; /*block address on SCSI device */ | |
129 | unsigned char scsi_cmd_length; /*6,10,12, for other scsi cmd */ | |
130 | } u1; | |
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 */ | |
135 | union { | |
136 | struct { | |
137 | unsigned short count; /*block count, on SCSI device */ | |
138 | unsigned short length; /*block length, on SCSI device */ | |
139 | } blk; | |
140 | unsigned char scsi_command[12]; /*other scsi command */ | |
141 | } u2; | |
142 | }; | |
143 | ||
144 | /*structure scatter-gather element (for list of system memory areas) */ | |
145 | struct im_sge { | |
146 | void *address; | |
147 | unsigned long byte_length; | |
148 | }; | |
149 | ||
150 | /*structure returned by a get_pos_info command: */ | |
151 | struct im_pos_info { | |
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 */ | |
172 | }; | |
173 | ||
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 | |
186 | ||
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 */ | |
193 | ||
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 | |
202 | ||
203 | /*TSB (Termination Status Block) structure */ | |
204 | struct im_tsb { | |
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; | |
218 | }; | |
219 | ||
220 | /*subsystem uses interrupt request level 14 */ | |
221 | #define IM_IRQ 14 | |
222 | /*SCSI-2 F/W may evade to interrupt 11 */ | |
223 | #define IM_IRQ_FW 11 | |
224 | ||
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 | |
229 | control port. */ | |
230 | ||
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 */ | |
236 | #define LED_DISP 1 | |
237 | #define LED_ADISP 2 | |
238 | #define LED_ACTIVITY 4 | |
239 | /* failed intr */ | |
240 | #define CMD_FAIL 255 | |
241 | ||
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. */ | |
248 | ||
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 */ | |
257 | ||
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); } | |
267 | ||
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); } | |
275 | ||
1da177e4 LT |
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 | |
281 | #define IBM_SCSI 4 | |
67b2009a | 282 | #define IBM_INTEGSCSI 5 |
1da177e4 LT |
283 | |
284 | /* other special flags for hostdata structure */ | |
285 | #define FORCED_DETECTION 100 | |
286 | #define INTEGRATED_SCSI 101 | |
287 | ||
288 | /* List of possible IBM-SCSI-adapters */ | |
67b2009a JB |
289 | static short ibmmca_id_table[] = { |
290 | 0x8efc, | |
291 | 0x8efd, | |
292 | 0x8ef8, | |
293 | 0x8eff, | |
294 | 0x8efe, | |
295 | /* No entry for integrated SCSI, that's part of the register */ | |
296 | 0 | |
297 | }; | |
298 | ||
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 */ | |
1da177e4 LT |
306 | }; |
307 | ||
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 | |
311 | ||
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 */ | |
324 | }; | |
325 | ||
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 | |
345 | ldn */ | |
346 | }; | |
347 | ||
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: */ | |
360 | int _got_interrupt; | |
361 | /* report termination-status of SCSI-command: */ | |
362 | int _stat_result; | |
363 | /* reset status (used only when doing reset): */ | |
364 | int _reset_status; | |
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: */ | |
376 | int _next_ldn; | |
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 | |
382 | adaptertype */ | |
383 | int _special; | |
384 | /* connector size on the MCA bus */ | |
385 | int _connector_size; | |
386 | /* synchronous SCSI transfer rate bitpattern */ | |
387 | int _adapter_speed; | |
388 | }; | |
389 | ||
390 | /* macros to access host data structure */ | |
67b2009a JB |
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]) | |
1da177e4 LT |
415 | |
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 | |
419 | ||
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 | |
422 | harm. */ | |
423 | #define TYPE_NO_DEVICE 0xFF | |
424 | ||
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 | |
429 | #endif | |
430 | ||
431 | /* define possible operations for the immediate_assign command */ | |
432 | #define SET_LDN 0 | |
433 | #define REMOVE_LDN 1 | |
434 | ||
435 | /* ldn which is used to probe the SCSI devices */ | |
436 | #define PROBE_LDN 0 | |
437 | ||
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 | |
445 | ||
446 | /* define undefined SCSI-command */ | |
447 | #define NO_SCSI 0xffff | |
448 | ||
449 | /*-----------------------------------------------------------------------*/ | |
450 | ||
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 }; | |
454 | ||
455 | /* fill module-parameters only, when this define is present. | |
456 | (that is kernel version 2.1.x) */ | |
457 | #if defined(MODULE) | |
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); | |
462 | ||
d39a942c | 463 | MODULE_LICENSE("GPL"); |
1da177e4 LT |
464 | #endif |
465 | /*counter of concurrent disk read/writes, to turn on/off disk led */ | |
466 | static int disk_rw_in_progress = 0; | |
467 | ||
1da177e4 LT |
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; | |
474 | #else | |
475 | static char ibm_ansi_order = 0; | |
476 | #endif | |
477 | ||
67b2009a | 478 | static void issue_cmd(struct Scsi_Host *, unsigned long, unsigned char); |
1da177e4 | 479 | static void internal_done(Scsi_Cmnd * cmd); |
67b2009a JB |
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); | |
1da177e4 | 483 | #ifdef CONFIG_IBMMCA_SCSI_DEV_RESET |
67b2009a | 484 | static int immediate_reset(struct Scsi_Host *, unsigned int); |
1da177e4 | 485 | #endif |
67b2009a JB |
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 *); | |
1da177e4 LT |
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); | |
67b2009a JB |
493 | static int probe_bus_mode(struct Scsi_Host *); |
494 | static int device_exists(struct Scsi_Host *, int, int *, int *); | |
1da177e4 LT |
495 | static int option_setup(char *); |
496 | /* local functions needed for proc_info */ | |
67b2009a JB |
497 | static int ldn_access_load(struct Scsi_Host *, int); |
498 | static int ldn_access_total_read_write(struct Scsi_Host *); | |
1da177e4 | 499 | |
7d12e780 | 500 | static irqreturn_t interrupt_handler(int irq, void *dev_id) |
1da177e4 | 501 | { |
1da177e4 LT |
502 | unsigned int intr_reg; |
503 | unsigned int cmd_result; | |
504 | unsigned int ldn; | |
67b2009a | 505 | unsigned long flags; |
1da177e4 LT |
506 | Scsi_Cmnd *cmd; |
507 | int lastSCSI; | |
67b2009a JB |
508 | struct device *dev = dev_id; |
509 | struct Scsi_Host *shpnt = dev_get_drvdata(dev); | |
1da177e4 | 510 | |
67b2009a JB |
511 | spin_lock_irqsave(shpnt->host_lock, flags); |
512 | ||
513 | if(!(inb(IM_STAT_REG(shpnt)) & IM_INTR_REQUEST)) { | |
514 | spin_unlock_irqrestore(shpnt->host_lock, flags); | |
1da177e4 LT |
515 | return IRQ_NONE; |
516 | } | |
517 | ||
518 | /* the reset-function already did all the job, even ints got | |
519 | renabled on the subsystem, so just return */ | |
67b2009a JB |
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); | |
1da177e4 LT |
523 | return IRQ_HANDLED; |
524 | } | |
525 | ||
526 | /*must wait for attention reg not busy, then send EOI to subsystem */ | |
527 | while (1) { | |
67b2009a | 528 | if (!(inb(IM_STAT_REG(shpnt)) & IM_BUSY)) |
1da177e4 LT |
529 | break; |
530 | cpu_relax(); | |
531 | } | |
67b2009a | 532 | |
1da177e4 | 533 | /*get command result and logical device */ |
67b2009a | 534 | intr_reg = (unsigned char) (inb(IM_INTR_REG(shpnt))); |
1da177e4 LT |
535 | cmd_result = intr_reg & 0xf0; |
536 | ldn = intr_reg & 0x0f; | |
537 | /* get the last_scsi_command here */ | |
67b2009a JB |
538 | lastSCSI = last_scsi_command(shpnt)[ldn]; |
539 | outb(IM_EOI | ldn, IM_ATTN_REG(shpnt)); | |
1da177e4 LT |
540 | |
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: | |
547 | case IM_CMD_ERROR: | |
548 | printk(KERN_ERR "IBM MCA SCSI: Fatal Subsystem ERROR!\n"); | |
67b2009a JB |
549 | printk(KERN_ERR " Last cmd=0x%x, ena=%x, len=", lastSCSI, ld(shpnt)[ldn].scb.enable); |
550 | if (ld(shpnt)[ldn].cmd) | |
5f60ef6a | 551 | printk("%ld/%ld,", (long) (scsi_bufflen(ld(shpnt)[ldn].cmd)), (long) (ld(shpnt)[ldn].scb.sys_buf_length)); |
1da177e4 LT |
552 | else |
553 | printk("none,"); | |
67b2009a JB |
554 | if (ld(shpnt)[ldn].cmd) |
555 | printk("Blocksize=%d", ld(shpnt)[ldn].scb.u2.blk.length); | |
1da177e4 LT |
556 | else |
557 | printk("Blocksize=none"); | |
67b2009a JB |
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); | |
1da177e4 LT |
562 | } |
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"); | |
67b2009a JB |
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))); | |
1da177e4 | 569 | printk(KERN_ERR " Interrupt Status Register...: %x\n", intr_reg); |
67b2009a JB |
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); | |
1da177e4 LT |
581 | } |
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); | |
584 | break; | |
585 | } | |
586 | } else { | |
587 | /* The command error handling is made silent, but we tell the | |
588 | * calling function, that there is a reported error from the | |
589 | * adapter. */ | |
590 | switch (cmd_result) { | |
591 | case IM_ADAPTER_HW_FAILURE: | |
592 | case IM_SOFTWARE_SEQUENCING_ERROR: | |
593 | case IM_CMD_ERROR: | |
594 | global_command_error_excuse = CMD_FAIL; | |
595 | break; | |
596 | default: | |
597 | global_command_error_excuse = 0; | |
598 | break; | |
599 | } | |
600 | } | |
601 | /* if no panic appeared, increase the interrupt-counter */ | |
67b2009a | 602 | IBM_DS(shpnt).total_interrupts++; |
1da177e4 | 603 | /*only for local checking phase */ |
67b2009a JB |
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); | |
1da177e4 LT |
610 | return IRQ_HANDLED; |
611 | } | |
612 | /* handling of commands coming from upper level of scsi driver */ | |
67b2009a | 613 | if (last_scsi_type(shpnt)[ldn] == IM_IMM_CMD) { |
1da177e4 | 614 | /* verify ldn, and may handle rare reset immediate command */ |
67b2009a | 615 | if ((reset_status(shpnt) == IM_RESET_IN_PROGRESS) && (last_scsi_command(shpnt)[ldn] == IM_RESET_IMM_CMD)) { |
1da177e4 LT |
616 | if (cmd_result == IM_CMD_COMPLETED_WITH_FAILURE) { |
617 | disk_rw_in_progress = 0; | |
618 | PS2_DISK_LED_OFF(); | |
67b2009a | 619 | reset_status(shpnt) = IM_RESET_FINISHED_FAIL; |
1da177e4 LT |
620 | } else { |
621 | /*reset disk led counter, turn off disk led */ | |
622 | disk_rw_in_progress = 0; | |
623 | PS2_DISK_LED_OFF(); | |
67b2009a | 624 | reset_status(shpnt) = IM_RESET_FINISHED_OK; |
1da177e4 | 625 | } |
67b2009a JB |
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); | |
1da177e4 | 630 | return IRQ_HANDLED; |
67b2009a | 631 | } else if (last_scsi_command(shpnt)[ldn] == IM_ABORT_IMM_CMD) { |
1da177e4 LT |
632 | /* react on SCSI abort command */ |
633 | #ifdef IM_DEBUG_PROBE | |
634 | printk("IBM MCA SCSI: Interrupt from SCSI-abort.\n"); | |
635 | #endif | |
636 | disk_rw_in_progress = 0; | |
637 | PS2_DISK_LED_OFF(); | |
67b2009a JB |
638 | cmd = ld(shpnt)[ldn].cmd; |
639 | ld(shpnt)[ldn].cmd = NULL; | |
1da177e4 LT |
640 | if (cmd_result == IM_CMD_COMPLETED_WITH_FAILURE) |
641 | cmd->result = DID_NO_CONNECT << 16; | |
642 | else | |
643 | cmd->result = DID_ABORT << 16; | |
67b2009a JB |
644 | stat_result(shpnt) = cmd_result; |
645 | last_scsi_command(shpnt)[ldn] = NO_SCSI; | |
646 | last_scsi_type(shpnt)[ldn] = 0; | |
1da177e4 LT |
647 | if (cmd->scsi_done) |
648 | (cmd->scsi_done) (cmd); /* should be the internal_done */ | |
67b2009a | 649 | spin_unlock_irqrestore(shpnt->host_lock, flags); |
1da177e4 LT |
650 | return IRQ_HANDLED; |
651 | } else { | |
652 | disk_rw_in_progress = 0; | |
653 | PS2_DISK_LED_OFF(); | |
67b2009a JB |
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); | |
1da177e4 LT |
658 | return IRQ_HANDLED; |
659 | } | |
660 | } | |
67b2009a JB |
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; | |
1da177e4 LT |
665 | #ifdef IM_DEBUG_TIMEOUT |
666 | if (cmd) { | |
667 | if ((cmd->target == TIMEOUT_PUN) && (cmd->device->lun == TIMEOUT_LUN)) { | |
67b2009a | 668 | spin_unlock_irqsave(shpnt->host_lock, flags); |
1da177e4 LT |
669 | printk("IBM MCA SCSI: Ignoring interrupt from pun=%x, lun=%x.\n", cmd->target, cmd->device->lun); |
670 | return IRQ_HANDLED; | |
671 | } | |
672 | } | |
673 | #endif | |
674 | /*if no command structure, just return, else clear cmd */ | |
675 | if (!cmd) | |
676 | { | |
67b2009a | 677 | spin_unlock_irqrestore(shpnt->host_lock, flags); |
1da177e4 LT |
678 | return IRQ_HANDLED; |
679 | } | |
680 | ||
681 | #ifdef IM_DEBUG_INT | |
67b2009a | 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); |
1da177e4 LT |
683 | #endif |
684 | /*if this is end of media read/write, may turn off PS/2 disk led */ | |
67b2009a | 685 | if ((ld(shpnt)[ldn].device_type != TYPE_NO_LUN) && (ld(shpnt)[ldn].device_type != TYPE_NO_DEVICE)) { |
1da177e4 LT |
686 | /* only access this, if there was a valid device addressed */ |
687 | if (--disk_rw_in_progress == 0) | |
688 | PS2_DISK_LED_OFF(); | |
689 | } | |
690 | ||
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) { | |
67b2009a JB |
696 | cmd->result = (unsigned char) (ld(shpnt)[ldn].tsb.dev_status & 0x1e); |
697 | IBM_DS(shpnt).total_errors++; | |
1da177e4 LT |
698 | } else |
699 | cmd->result = 0; | |
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; | |
706 | if (cmd->scsi_done) | |
707 | (cmd->scsi_done) (cmd); | |
67b2009a | 708 | spin_unlock_irqrestore(shpnt->host_lock, flags); |
1da177e4 LT |
709 | return IRQ_HANDLED; |
710 | } | |
711 | ||
67b2009a JB |
712 | static void issue_cmd(struct Scsi_Host *shpnt, unsigned long cmd_reg, |
713 | unsigned char attn_reg) | |
1da177e4 LT |
714 | { |
715 | unsigned long flags; | |
716 | /* must wait for attention reg not busy */ | |
717 | while (1) { | |
67b2009a JB |
718 | spin_lock_irqsave(shpnt->host_lock, flags); |
719 | if (!(inb(IM_STAT_REG(shpnt)) & IM_BUSY)) | |
1da177e4 | 720 | break; |
67b2009a | 721 | spin_unlock_irqrestore(shpnt->host_lock, flags); |
1da177e4 LT |
722 | } |
723 | /* write registers and enable system interrupts */ | |
67b2009a JB |
724 | outl(cmd_reg, IM_CMD_REG(shpnt)); |
725 | outb(attn_reg, IM_ATTN_REG(shpnt)); | |
726 | spin_unlock_irqrestore(shpnt->host_lock, flags); | |
1da177e4 LT |
727 | } |
728 | ||
729 | static void internal_done(Scsi_Cmnd * cmd) | |
730 | { | |
731 | cmd->SCp.Status++; | |
732 | return; | |
733 | } | |
734 | ||
735 | /* SCSI-SCB-command for device_inquiry */ | |
67b2009a | 736 | static int device_inquiry(struct Scsi_Host *shpnt, int ldn) |
1da177e4 LT |
737 | { |
738 | int retr; | |
739 | struct im_scb *scb; | |
740 | struct im_tsb *tsb; | |
741 | unsigned char *buf; | |
742 | ||
67b2009a JB |
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 */ | |
1da177e4 LT |
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; | |
67b2009a JB |
751 | last_scsi_command(shpnt)[ldn] = IM_DEVICE_INQUIRY_CMD; |
752 | last_scsi_type(shpnt)[ldn] = IM_SCB; | |
1da177e4 LT |
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 */ | |
67b2009a JB |
757 | got_interrupt(shpnt) = 0; |
758 | issue_cmd(shpnt, isa_virt_to_bus(scb), IM_SCB | ldn); | |
759 | while (!got_interrupt(shpnt)) | |
1da177e4 LT |
760 | barrier(); |
761 | ||
d6e05edc | 762 | /*if command successful, break */ |
67b2009a | 763 | if ((stat_result(shpnt) == IM_SCB_CMD_COMPLETED) || (stat_result(shpnt) == IM_SCB_CMD_COMPLETED_WITH_RETRIES)) |
1da177e4 LT |
764 | return 1; |
765 | } | |
766 | /*if all three retries failed, return "no device at this ldn" */ | |
767 | if (retr >= 3) | |
768 | return 0; | |
769 | else | |
770 | return 1; | |
771 | } | |
772 | ||
67b2009a | 773 | static int read_capacity(struct Scsi_Host *shpnt, int ldn) |
1da177e4 LT |
774 | { |
775 | int retr; | |
776 | struct im_scb *scb; | |
777 | struct im_tsb *tsb; | |
778 | unsigned char *buf; | |
779 | ||
67b2009a JB |
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; | |
1da177e4 LT |
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; | |
67b2009a JB |
788 | last_scsi_command(shpnt)[ldn] = IM_READ_CAPACITY_CMD; |
789 | last_scsi_type(shpnt)[ldn] = IM_SCB; | |
1da177e4 LT |
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 */ | |
67b2009a JB |
794 | got_interrupt(shpnt) = 0; |
795 | issue_cmd(shpnt, isa_virt_to_bus(scb), IM_SCB | ldn); | |
796 | while (!got_interrupt(shpnt)) | |
1da177e4 LT |
797 | barrier(); |
798 | ||
799 | /*if got capacity, get block length and return one device found */ | |
67b2009a | 800 | if ((stat_result(shpnt) == IM_SCB_CMD_COMPLETED) || (stat_result(shpnt) == IM_SCB_CMD_COMPLETED_WITH_RETRIES)) |
1da177e4 LT |
801 | return 1; |
802 | } | |
803 | /*if all three retries failed, return "no device at this ldn" */ | |
804 | if (retr >= 3) | |
805 | return 0; | |
806 | else | |
807 | return 1; | |
808 | } | |
809 | ||
67b2009a | 810 | static int get_pos_info(struct Scsi_Host *shpnt) |
1da177e4 LT |
811 | { |
812 | int retr; | |
813 | struct im_scb *scb; | |
814 | struct im_tsb *tsb; | |
815 | unsigned char *buf; | |
816 | ||
67b2009a JB |
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; | |
1da177e4 LT |
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; | |
67b2009a JB |
825 | last_scsi_command(shpnt)[MAX_LOG_DEV] = IM_GET_POS_INFO_CMD; |
826 | last_scsi_type(shpnt)[MAX_LOG_DEV] = IM_SCB; | |
1da177e4 | 827 | scb->sys_buf_adr = isa_virt_to_bus(buf); |
67b2009a | 828 | if (special(shpnt) == IBM_SCSI2_FW) |
1da177e4 LT |
829 | scb->sys_buf_length = 256; /* get all info from F/W adapter */ |
830 | else | |
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 */ | |
67b2009a JB |
834 | got_interrupt(shpnt) = 0; |
835 | issue_cmd(shpnt, isa_virt_to_bus(scb), IM_SCB | MAX_LOG_DEV); | |
1da177e4 LT |
836 | |
837 | /* FIXME: timeout */ | |
67b2009a | 838 | while (!got_interrupt(shpnt)) |
1da177e4 LT |
839 | barrier(); |
840 | ||
841 | /*if got POS-stuff, get block length and return one device found */ | |
67b2009a | 842 | if ((stat_result(shpnt) == IM_SCB_CMD_COMPLETED) || (stat_result(shpnt) == IM_SCB_CMD_COMPLETED_WITH_RETRIES)) |
1da177e4 LT |
843 | return 1; |
844 | } | |
845 | /* if all three retries failed, return "no device at this ldn" */ | |
846 | if (retr >= 3) | |
847 | return 0; | |
848 | else | |
849 | return 1; | |
850 | } | |
851 | ||
852 | /* SCSI-immediate-command for assign. This functions maps/unmaps specific | |
853 | ldn-numbers on SCSI (PUN,LUN). It is needed for presetting of the | |
854 | subsystem and for dynamical remapping od ldns. */ | |
67b2009a JB |
855 | static int immediate_assign(struct Scsi_Host *shpnt, unsigned int pun, |
856 | unsigned int lun, unsigned int ldn, | |
857 | unsigned int operation) | |
1da177e4 LT |
858 | { |
859 | int retr; | |
860 | unsigned long imm_cmd; | |
861 | ||
862 | for (retr = 0; retr < 3; retr++) { | |
863 | /* select mutation level of the SCSI-adapter */ | |
67b2009a | 864 | switch (special(shpnt)) { |
1da177e4 LT |
865 | case IBM_SCSI2_FW: |
866 | imm_cmd = (unsigned long) (IM_ASSIGN_IMM_CMD); | |
867 | imm_cmd |= (unsigned long) ((lun & 7) << 24); | |
868 | imm_cmd |= (unsigned long) ((operation & 1) << 23); | |
869 | imm_cmd |= (unsigned long) ((pun & 7) << 20) | ((pun & 8) << 24); | |
870 | imm_cmd |= (unsigned long) ((ldn & 15) << 16); | |
871 | break; | |
872 | default: | |
67b2009a | 873 | imm_cmd = inl(IM_CMD_REG(shpnt)); |
1da177e4 LT |
874 | imm_cmd &= (unsigned long) (0xF8000000); /* keep reserved bits */ |
875 | imm_cmd |= (unsigned long) (IM_ASSIGN_IMM_CMD); | |
876 | imm_cmd |= (unsigned long) ((lun & 7) << 24); | |
877 | imm_cmd |= (unsigned long) ((operation & 1) << 23); | |
878 | imm_cmd |= (unsigned long) ((pun & 7) << 20); | |
879 | imm_cmd |= (unsigned long) ((ldn & 15) << 16); | |
880 | break; | |
881 | } | |
67b2009a JB |
882 | last_scsi_command(shpnt)[MAX_LOG_DEV] = IM_ASSIGN_IMM_CMD; |
883 | last_scsi_type(shpnt)[MAX_LOG_DEV] = IM_IMM_CMD; | |
884 | got_interrupt(shpnt) = 0; | |
885 | issue_cmd(shpnt, (unsigned long) (imm_cmd), IM_IMM_CMD | MAX_LOG_DEV); | |
886 | while (!got_interrupt(shpnt)) | |
1da177e4 LT |
887 | barrier(); |
888 | ||
d6e05edc | 889 | /*if command successful, break */ |
67b2009a | 890 | if (stat_result(shpnt) == IM_IMMEDIATE_CMD_COMPLETED) |
1da177e4 LT |
891 | return 1; |
892 | } | |
893 | if (retr >= 3) | |
894 | return 0; | |
895 | else | |
896 | return 1; | |
897 | } | |
898 | ||
67b2009a | 899 | static int immediate_feature(struct Scsi_Host *shpnt, unsigned int speed, unsigned int timeout) |
1da177e4 LT |
900 | { |
901 | int retr; | |
902 | unsigned long imm_cmd; | |
903 | ||
904 | for (retr = 0; retr < 3; retr++) { | |
905 | /* select mutation level of the SCSI-adapter */ | |
906 | imm_cmd = IM_FEATURE_CTR_IMM_CMD; | |
907 | imm_cmd |= (unsigned long) ((speed & 0x7) << 29); | |
908 | imm_cmd |= (unsigned long) ((timeout & 0x1fff) << 16); | |
67b2009a JB |
909 | last_scsi_command(shpnt)[MAX_LOG_DEV] = IM_FEATURE_CTR_IMM_CMD; |
910 | last_scsi_type(shpnt)[MAX_LOG_DEV] = IM_IMM_CMD; | |
911 | got_interrupt(shpnt) = 0; | |
1da177e4 LT |
912 | /* we need to run into command errors in order to probe for the |
913 | * right speed! */ | |
914 | global_command_error_excuse = 1; | |
67b2009a | 915 | issue_cmd(shpnt, (unsigned long) (imm_cmd), IM_IMM_CMD | MAX_LOG_DEV); |
1da177e4 LT |
916 | |
917 | /* FIXME: timeout */ | |
67b2009a | 918 | while (!got_interrupt(shpnt)) |
1da177e4 LT |
919 | barrier(); |
920 | if (global_command_error_excuse == CMD_FAIL) { | |
921 | global_command_error_excuse = 0; | |
922 | return 2; | |
923 | } else | |
924 | global_command_error_excuse = 0; | |
d6e05edc | 925 | /*if command successful, break */ |
67b2009a | 926 | if (stat_result(shpnt) == IM_IMMEDIATE_CMD_COMPLETED) |
1da177e4 LT |
927 | return 1; |
928 | } | |
929 | if (retr >= 3) | |
930 | return 0; | |
931 | else | |
932 | return 1; | |
933 | } | |
934 | ||
935 | #ifdef CONFIG_IBMMCA_SCSI_DEV_RESET | |
67b2009a | 936 | static int immediate_reset(struct Scsi_Host *shpnt, unsigned int ldn) |
1da177e4 LT |
937 | { |
938 | int retries; | |
939 | int ticks; | |
940 | unsigned long imm_command; | |
941 | ||
942 | for (retries = 0; retries < 3; retries++) { | |
67b2009a | 943 | imm_command = inl(IM_CMD_REG(shpnt)); |
1da177e4 LT |
944 | imm_command &= (unsigned long) (0xFFFF0000); /* keep reserved bits */ |
945 | imm_command |= (unsigned long) (IM_RESET_IMM_CMD); | |
67b2009a JB |
946 | last_scsi_command(shpnt)[ldn] = IM_RESET_IMM_CMD; |
947 | last_scsi_type(shpnt)[ldn] = IM_IMM_CMD; | |
948 | got_interrupt(shpnt) = 0; | |
949 | reset_status(shpnt) = IM_RESET_IN_PROGRESS; | |
950 | issue_cmd(shpnt, (unsigned long) (imm_command), IM_IMM_CMD | ldn); | |
1da177e4 | 951 | ticks = IM_RESET_DELAY * HZ; |
67b2009a | 952 | while (reset_status(shpnt) == IM_RESET_IN_PROGRESS && --ticks) { |
1da177e4 LT |
953 | udelay((1 + 999 / HZ) * 1000); |
954 | barrier(); | |
955 | } | |
956 | /* if reset did not complete, just complain */ | |
957 | if (!ticks) { | |
958 | printk(KERN_ERR "IBM MCA SCSI: reset did not complete within %d seconds.\n", IM_RESET_DELAY); | |
67b2009a | 959 | reset_status(shpnt) = IM_RESET_FINISHED_OK; |
1da177e4 LT |
960 | /* did not work, finish */ |
961 | return 1; | |
962 | } | |
d6e05edc | 963 | /*if command successful, break */ |
67b2009a | 964 | if (stat_result(shpnt) == IM_IMMEDIATE_CMD_COMPLETED) |
1da177e4 LT |
965 | return 1; |
966 | } | |
967 | if (retries >= 3) | |
968 | return 0; | |
969 | else | |
970 | return 1; | |
971 | } | |
972 | #endif | |
973 | ||
974 | /* type-interpreter for physical device numbers */ | |
975 | static char *ti_p(int dev) | |
976 | { | |
977 | switch (dev) { | |
978 | case TYPE_IBM_SCSI_ADAPTER: | |
979 | return ("A"); | |
980 | case TYPE_DISK: | |
981 | return ("D"); | |
982 | case TYPE_TAPE: | |
983 | return ("T"); | |
984 | case TYPE_PROCESSOR: | |
985 | return ("P"); | |
986 | case TYPE_WORM: | |
987 | return ("W"); | |
988 | case TYPE_ROM: | |
989 | return ("R"); | |
990 | case TYPE_SCANNER: | |
991 | return ("S"); | |
992 | case TYPE_MOD: | |
993 | return ("M"); | |
994 | case TYPE_MEDIUM_CHANGER: | |
995 | return ("C"); | |
996 | case TYPE_NO_LUN: | |
997 | return ("+"); /* show NO_LUN */ | |
998 | } | |
999 | return ("-"); /* TYPE_NO_DEVICE and others */ | |
1000 | } | |
1001 | ||
1002 | /* interpreter for logical device numbers (ldn) */ | |
1003 | static char *ti_l(int val) | |
1004 | { | |
1005 | const char hex[16] = "0123456789abcdef"; | |
1006 | static char answer[2]; | |
1007 | ||
1008 | answer[1] = (char) (0x0); | |
1009 | if (val <= MAX_LOG_DEV) | |
1010 | answer[0] = hex[val]; | |
1011 | else | |
1012 | answer[0] = '-'; | |
1013 | return (char *) &answer; | |
1014 | } | |
1015 | ||
1016 | /* transfers bitpattern of the feature command to values in MHz */ | |
1017 | static char *ibmrate(unsigned int speed, int i) | |
1018 | { | |
1019 | switch (speed) { | |
1020 | case 0: | |
1021 | return i ? "5.00" : "10.00"; | |
1022 | case 1: | |
1023 | return i ? "4.00" : "8.00"; | |
1024 | case 2: | |
1025 | return i ? "3.33" : "6.66"; | |
1026 | case 3: | |
1027 | return i ? "2.86" : "5.00"; | |
1028 | case 4: | |
1029 | return i ? "2.50" : "4.00"; | |
1030 | case 5: | |
1031 | return i ? "2.22" : "3.10"; | |
1032 | case 6: | |
1033 | return i ? "2.00" : "2.50"; | |
1034 | case 7: | |
1035 | return i ? "1.82" : "2.00"; | |
1036 | } | |
1037 | return "---"; | |
1038 | } | |
1039 | ||
1040 | static int probe_display(int what) | |
1041 | { | |
1042 | static int rotator = 0; | |
1043 | const char rotor[] = "|/-\\"; | |
1044 | ||
1045 | if (!(display_mode & LED_DISP)) | |
1046 | return 0; | |
1047 | if (!what) { | |
1048 | outl(0x20202020, MOD95_LED_PORT); | |
1049 | outl(0x20202020, MOD95_LED_PORT + 4); | |
1050 | } else { | |
1051 | outb('S', MOD95_LED_PORT + 7); | |
1052 | outb('C', MOD95_LED_PORT + 6); | |
1053 | outb('S', MOD95_LED_PORT + 5); | |
1054 | outb('I', MOD95_LED_PORT + 4); | |
1055 | outb('i', MOD95_LED_PORT + 3); | |
1056 | outb('n', MOD95_LED_PORT + 2); | |
1057 | outb('i', MOD95_LED_PORT + 1); | |
1058 | outb((char) (rotor[rotator]), MOD95_LED_PORT); | |
1059 | rotator++; | |
1060 | if (rotator > 3) | |
1061 | rotator = 0; | |
1062 | } | |
1063 | return 0; | |
1064 | } | |
1065 | ||
67b2009a | 1066 | static int probe_bus_mode(struct Scsi_Host *shpnt) |
1da177e4 LT |
1067 | { |
1068 | struct im_pos_info *info; | |
1069 | int num_bus = 0; | |
1070 | int ldn; | |
1071 | ||
67b2009a JB |
1072 | info = (struct im_pos_info *) (&(ld(shpnt)[MAX_LOG_DEV].buf)); |
1073 | if (get_pos_info(shpnt)) { | |
1da177e4 | 1074 | if (info->connector_size & 0xf000) |
67b2009a | 1075 | subsystem_connector_size(shpnt) = 16; |
1da177e4 | 1076 | else |
67b2009a | 1077 | subsystem_connector_size(shpnt) = 32; |
1da177e4 LT |
1078 | num_bus |= (info->pos_4b & 8) >> 3; |
1079 | for (ldn = 0; ldn <= MAX_LOG_DEV; ldn++) { | |
67b2009a | 1080 | if ((special(shpnt) == IBM_SCSI_WCACHE) || (special(shpnt) == IBM_7568_WCACHE)) { |
1da177e4 | 1081 | if (!((info->cache_stat >> ldn) & 1)) |
67b2009a | 1082 | ld(shpnt)[ldn].cache_flag = 0; |
1da177e4 LT |
1083 | } |
1084 | if (!((info->retry_stat >> ldn) & 1)) | |
67b2009a | 1085 | ld(shpnt)[ldn].retry_flag = 0; |
1da177e4 LT |
1086 | } |
1087 | #ifdef IM_DEBUG_PROBE | |
1088 | printk("IBM MCA SCSI: SCSI-Cache bits: "); | |
1089 | for (ldn = 0; ldn <= MAX_LOG_DEV; ldn++) { | |
67b2009a | 1090 | printk("%d", ld(shpnt)[ldn].cache_flag); |
1da177e4 LT |
1091 | } |
1092 | printk("\nIBM MCA SCSI: SCSI-Retry bits: "); | |
1093 | for (ldn = 0; ldn <= MAX_LOG_DEV; ldn++) { | |
67b2009a | 1094 | printk("%d", ld(shpnt)[ldn].retry_flag); |
1da177e4 LT |
1095 | } |
1096 | printk("\n"); | |
1097 | #endif | |
1098 | } | |
1099 | return num_bus; | |
1100 | } | |
1101 | ||
1102 | /* probing scsi devices */ | |
67b2009a | 1103 | static void check_devices(struct Scsi_Host *shpnt, int adaptertype) |
1da177e4 LT |
1104 | { |
1105 | int id, lun, ldn, ticks; | |
1106 | int count_devices; /* local counter for connected device */ | |
1107 | int max_pun; | |
1108 | int num_bus; | |
1109 | int speedrun; /* local adapter_speed check variable */ | |
1110 | ||
1111 | /* assign default values to certain variables */ | |
1112 | ticks = 0; | |
1113 | count_devices = 0; | |
67b2009a JB |
1114 | IBM_DS(shpnt).dyn_flag = 0; /* normally no need for dynamical ldn management */ |
1115 | IBM_DS(shpnt).total_errors = 0; /* set errorcounter to 0 */ | |
1116 | next_ldn(shpnt) = 7; /* next ldn to be assigned is 7, because 0-6 is 'hardwired' */ | |
1da177e4 LT |
1117 | |
1118 | /* initialize the very important driver-informational arrays/structs */ | |
67b2009a | 1119 | memset(ld(shpnt), 0, sizeof(ld(shpnt))); |
1da177e4 | 1120 | for (ldn = 0; ldn <= MAX_LOG_DEV; ldn++) { |
67b2009a JB |
1121 | last_scsi_command(shpnt)[ldn] = NO_SCSI; /* emptify last SCSI-command storage */ |
1122 | last_scsi_type(shpnt)[ldn] = 0; | |
1123 | ld(shpnt)[ldn].cache_flag = 1; | |
1124 | ld(shpnt)[ldn].retry_flag = 1; | |
1da177e4 | 1125 | } |
67b2009a JB |
1126 | memset(get_ldn(shpnt), TYPE_NO_DEVICE, sizeof(get_ldn(shpnt))); /* this is essential ! */ |
1127 | memset(get_scsi(shpnt), TYPE_NO_DEVICE, sizeof(get_scsi(shpnt))); /* this is essential ! */ | |
1da177e4 LT |
1128 | for (lun = 0; lun < 8; lun++) { |
1129 | /* mark the adapter at its pun on all luns */ | |
67b2009a JB |
1130 | get_scsi(shpnt)[subsystem_pun(shpnt)][lun] = TYPE_IBM_SCSI_ADAPTER; |
1131 | get_ldn(shpnt)[subsystem_pun(shpnt)][lun] = MAX_LOG_DEV; /* make sure, the subsystem | |
1da177e4 LT |
1132 | ldn is active for all |
1133 | luns. */ | |
1134 | } | |
1135 | probe_display(0); /* Supercool display usage during SCSI-probing. */ | |
1136 | /* This makes sense, when booting without any */ | |
1137 | /* monitor connected on model XX95. */ | |
1138 | ||
1139 | /* STEP 1: */ | |
67b2009a JB |
1140 | adapter_speed(shpnt) = global_adapter_speed; |
1141 | speedrun = adapter_speed(shpnt); | |
1142 | while (immediate_feature(shpnt, speedrun, adapter_timeout) == 2) { | |
1da177e4 LT |
1143 | probe_display(1); |
1144 | if (speedrun == 7) | |
1145 | panic("IBM MCA SCSI: Cannot set Synchronous-Transfer-Rate!\n"); | |
1146 | speedrun++; | |
1147 | if (speedrun > 7) | |
1148 | speedrun = 7; | |
1149 | } | |
67b2009a | 1150 | adapter_speed(shpnt) = speedrun; |
1da177e4 LT |
1151 | /* Get detailed information about the current adapter, necessary for |
1152 | * device operations: */ | |
67b2009a | 1153 | num_bus = probe_bus_mode(shpnt); |
1da177e4 LT |
1154 | |
1155 | /* num_bus contains only valid data for the F/W adapter! */ | |
1156 | if (adaptertype == IBM_SCSI2_FW) { /* F/W SCSI adapter: */ | |
1157 | /* F/W adapter PUN-space extension evaluation: */ | |
1158 | if (num_bus) { | |
1159 | printk(KERN_INFO "IBM MCA SCSI: Separate bus mode (wide-addressing enabled)\n"); | |
67b2009a | 1160 | subsystem_maxid(shpnt) = 16; |
1da177e4 LT |
1161 | } else { |
1162 | printk(KERN_INFO "IBM MCA SCSI: Combined bus mode (wide-addressing disabled)\n"); | |
67b2009a | 1163 | subsystem_maxid(shpnt) = 8; |
1da177e4 LT |
1164 | } |
1165 | printk(KERN_INFO "IBM MCA SCSI: Sync.-Rate (F/W: 20, Int.: 10, Ext.: %s) MBytes/s\n", ibmrate(speedrun, adaptertype)); | |
1166 | } else /* all other IBM SCSI adapters: */ | |
1167 | printk(KERN_INFO "IBM MCA SCSI: Synchronous-SCSI-Transfer-Rate: %s MBytes/s\n", ibmrate(speedrun, adaptertype)); | |
1168 | ||
1169 | /* assign correct PUN device space */ | |
67b2009a | 1170 | max_pun = subsystem_maxid(shpnt); |
1da177e4 LT |
1171 | |
1172 | #ifdef IM_DEBUG_PROBE | |
67b2009a | 1173 | printk("IBM MCA SCSI: Current SCSI-host index: %d\n", shpnt); |
1da177e4 LT |
1174 | printk("IBM MCA SCSI: Removing default logical SCSI-device mapping."); |
1175 | #else | |
1176 | printk(KERN_INFO "IBM MCA SCSI: Dev. Order: %s, Mapping (takes <2min): ", (ibm_ansi_order) ? "ANSI" : "New"); | |
1177 | #endif | |
1178 | for (ldn = 0; ldn < MAX_LOG_DEV; ldn++) { | |
1179 | probe_display(1); | |
1180 | #ifdef IM_DEBUG_PROBE | |
1181 | printk("."); | |
1182 | #endif | |
67b2009a | 1183 | immediate_assign(shpnt, 0, 0, ldn, REMOVE_LDN); /* remove ldn (wherever) */ |
1da177e4 LT |
1184 | } |
1185 | lun = 0; /* default lun is 0 */ | |
1186 | #ifndef IM_DEBUG_PROBE | |
1187 | printk("cleared,"); | |
1188 | #endif | |
1189 | /* STEP 2: */ | |
1190 | #ifdef IM_DEBUG_PROBE | |
1191 | printk("\nIBM MCA SCSI: Scanning SCSI-devices."); | |
1192 | #endif | |
1193 | for (id = 0; id < max_pun; id++) | |
1194 | #ifdef CONFIG_SCSI_MULTI_LUN | |
1195 | for (lun = 0; lun < 8; lun++) | |
1196 | #endif | |
1197 | { | |
1198 | probe_display(1); | |
1199 | #ifdef IM_DEBUG_PROBE | |
1200 | printk("."); | |
1201 | #endif | |
67b2009a | 1202 | if (id != subsystem_pun(shpnt)) { |
1da177e4 LT |
1203 | /* if pun is not the adapter: */ |
1204 | /* set ldn=0 to pun,lun */ | |
67b2009a JB |
1205 | immediate_assign(shpnt, id, lun, PROBE_LDN, SET_LDN); |
1206 | if (device_inquiry(shpnt, PROBE_LDN)) { /* probe device */ | |
1207 | get_scsi(shpnt)[id][lun] = (unsigned char) (ld(shpnt)[PROBE_LDN].buf[0]); | |
1da177e4 | 1208 | /* entry, even for NO_LUN */ |
67b2009a | 1209 | if (ld(shpnt)[PROBE_LDN].buf[0] != TYPE_NO_LUN) |
1da177e4 LT |
1210 | count_devices++; /* a existing device is found */ |
1211 | } | |
1212 | /* remove ldn */ | |
67b2009a | 1213 | immediate_assign(shpnt, id, lun, PROBE_LDN, REMOVE_LDN); |
1da177e4 LT |
1214 | } |
1215 | } | |
1216 | #ifndef IM_DEBUG_PROBE | |
1217 | printk("scanned,"); | |
1218 | #endif | |
1219 | /* STEP 3: */ | |
1220 | #ifdef IM_DEBUG_PROBE | |
1221 | printk("\nIBM MCA SCSI: Mapping SCSI-devices."); | |
1222 | #endif | |
1223 | ldn = 0; | |
1224 | lun = 0; | |
1225 | #ifdef CONFIG_SCSI_MULTI_LUN | |
1226 | for (lun = 0; lun < 8 && ldn < MAX_LOG_DEV; lun++) | |
1227 | #endif | |
1228 | for (id = 0; id < max_pun && ldn < MAX_LOG_DEV; id++) { | |
1229 | probe_display(1); | |
1230 | #ifdef IM_DEBUG_PROBE | |
1231 | printk("."); | |
1232 | #endif | |
67b2009a JB |
1233 | if (id != subsystem_pun(shpnt)) { |
1234 | if (get_scsi(shpnt)[id][lun] != TYPE_NO_LUN && get_scsi(shpnt)[id][lun] != TYPE_NO_DEVICE) { | |
1da177e4 LT |
1235 | /* Only map if accepted type. Always enter for |
1236 | lun == 0 to get no gaps into ldn-mapping for ldn<7. */ | |
67b2009a JB |
1237 | immediate_assign(shpnt, id, lun, ldn, SET_LDN); |
1238 | get_ldn(shpnt)[id][lun] = ldn; /* map ldn */ | |
1239 | if (device_exists(shpnt, ldn, &ld(shpnt)[ldn].block_length, &ld(shpnt)[ldn].device_type)) { | |
1da177e4 LT |
1240 | #ifdef CONFIG_IBMMCA_SCSI_DEV_RESET |
1241 | printk("resetting device at ldn=%x ... ", ldn); | |
67b2009a | 1242 | immediate_reset(shpnt, ldn); |
1da177e4 LT |
1243 | #endif |
1244 | ldn++; | |
1245 | } else { | |
1246 | /* device vanished, probably because we don't know how to | |
1247 | * handle it or because it has problems */ | |
1248 | if (lun > 0) { | |
1249 | /* remove mapping */ | |
67b2009a JB |
1250 | get_ldn(shpnt)[id][lun] = TYPE_NO_DEVICE; |
1251 | immediate_assign(shpnt, 0, 0, ldn, REMOVE_LDN); | |
1da177e4 LT |
1252 | } else |
1253 | ldn++; | |
1254 | } | |
1255 | } else if (lun == 0) { | |
1256 | /* map lun == 0, even if no device exists */ | |
67b2009a JB |
1257 | immediate_assign(shpnt, id, lun, ldn, SET_LDN); |
1258 | get_ldn(shpnt)[id][lun] = ldn; /* map ldn */ | |
1da177e4 LT |
1259 | ldn++; |
1260 | } | |
1261 | } | |
1262 | } | |
1263 | /* STEP 4: */ | |
1264 | ||
1265 | /* map remaining ldns to non-existing devices */ | |
1266 | for (lun = 1; lun < 8 && ldn < MAX_LOG_DEV; lun++) | |
1267 | for (id = 0; id < max_pun && ldn < MAX_LOG_DEV; id++) { | |
67b2009a | 1268 | if (get_scsi(shpnt)[id][lun] == TYPE_NO_LUN || get_scsi(shpnt)[id][lun] == TYPE_NO_DEVICE) { |
1da177e4 LT |
1269 | probe_display(1); |
1270 | /* Map remaining ldns only to NON-existing pun,lun | |
1271 | combinations to make sure an inquiry will fail. | |
1272 | For MULTI_LUN, it is needed to avoid adapter autonome | |
1273 | SCSI-remapping. */ | |
67b2009a JB |
1274 | immediate_assign(shpnt, id, lun, ldn, SET_LDN); |
1275 | get_ldn(shpnt)[id][lun] = ldn; | |
1da177e4 LT |
1276 | ldn++; |
1277 | } | |
1278 | } | |
1279 | #ifndef IM_DEBUG_PROBE | |
1280 | printk("mapped."); | |
1281 | #endif | |
1282 | printk("\n"); | |
1283 | #ifdef IM_DEBUG_PROBE | |
1284 | if (ibm_ansi_order) | |
1285 | printk("IBM MCA SCSI: Device order: IBM/ANSI (pun=7 is first).\n"); | |
1286 | else | |
1287 | printk("IBM MCA SCSI: Device order: New Industry Standard (pun=0 is first).\n"); | |
1288 | #endif | |
1289 | ||
1290 | #ifdef IM_DEBUG_PROBE | |
1291 | /* Show the physical and logical mapping during boot. */ | |
1292 | printk("IBM MCA SCSI: Determined SCSI-device-mapping:\n"); | |
1293 | printk(" Physical SCSI-Device Map Logical SCSI-Device Map\n"); | |
1294 | printk("ID\\LUN 0 1 2 3 4 5 6 7 ID\\LUN 0 1 2 3 4 5 6 7\n"); | |
1295 | for (id = 0; id < max_pun; id++) { | |
1296 | printk("%2d ", id); | |
1297 | for (lun = 0; lun < 8; lun++) | |
67b2009a | 1298 | printk("%2s ", ti_p(get_scsi(shpnt)[id][lun])); |
1da177e4 LT |
1299 | printk(" %2d ", id); |
1300 | for (lun = 0; lun < 8; lun++) | |
67b2009a | 1301 | printk("%2s ", ti_l(get_ldn(shpnt)[id][lun])); |
1da177e4 LT |
1302 | printk("\n"); |
1303 | } | |
1304 | #endif | |
1305 | ||
1306 | /* assign total number of found SCSI-devices to the statistics struct */ | |
67b2009a | 1307 | IBM_DS(shpnt).total_scsi_devices = count_devices; |
1da177e4 LT |
1308 | |
1309 | /* decide for output in /proc-filesystem, if the configuration of | |
1310 | SCSI-devices makes dynamical reassignment of devices necessary */ | |
1311 | if (count_devices >= MAX_LOG_DEV) | |
67b2009a | 1312 | IBM_DS(shpnt).dyn_flag = 1; /* dynamical assignment is necessary */ |
1da177e4 | 1313 | else |
67b2009a | 1314 | IBM_DS(shpnt).dyn_flag = 0; /* dynamical assignment is not necessary */ |
1da177e4 LT |
1315 | |
1316 | /* If no SCSI-devices are assigned, return 1 in order to cause message. */ | |
1317 | if (ldn == 0) | |
1318 | printk("IBM MCA SCSI: Warning: No SCSI-devices found/assigned!\n"); | |
1319 | ||
1320 | /* reset the counters for statistics on the current adapter */ | |
67b2009a JB |
1321 | IBM_DS(shpnt).scbs = 0; |
1322 | IBM_DS(shpnt).long_scbs = 0; | |
1323 | IBM_DS(shpnt).total_accesses = 0; | |
1324 | IBM_DS(shpnt).total_interrupts = 0; | |
1325 | IBM_DS(shpnt).dynamical_assignments = 0; | |
1326 | memset(IBM_DS(shpnt).ldn_access, 0x0, sizeof(IBM_DS(shpnt).ldn_access)); | |
1327 | memset(IBM_DS(shpnt).ldn_read_access, 0x0, sizeof(IBM_DS(shpnt).ldn_read_access)); | |
1328 | memset(IBM_DS(shpnt).ldn_write_access, 0x0, sizeof(IBM_DS(shpnt).ldn_write_access)); | |
1329 | memset(IBM_DS(shpnt).ldn_inquiry_access, 0x0, sizeof(IBM_DS(shpnt).ldn_inquiry_access)); | |
1330 | memset(IBM_DS(shpnt).ldn_modeselect_access, 0x0, sizeof(IBM_DS(shpnt).ldn_modeselect_access)); | |
1331 | memset(IBM_DS(shpnt).ldn_assignments, 0x0, sizeof(IBM_DS(shpnt).ldn_assignments)); | |
1da177e4 LT |
1332 | probe_display(0); |
1333 | return; | |
1334 | } | |
1335 | ||
67b2009a | 1336 | static int device_exists(struct Scsi_Host *shpnt, int ldn, int *block_length, int *device_type) |
1da177e4 LT |
1337 | { |
1338 | unsigned char *buf; | |
1339 | /* if no valid device found, return immediately with 0 */ | |
67b2009a | 1340 | if (!(device_inquiry(shpnt, ldn))) |
1da177e4 | 1341 | return 0; |
67b2009a | 1342 | buf = (unsigned char *) (&(ld(shpnt)[ldn].buf)); |
1da177e4 LT |
1343 | if (*buf == TYPE_ROM) { |
1344 | *device_type = TYPE_ROM; | |
1345 | *block_length = 2048; /* (standard blocksize for yellow-/red-book) */ | |
1346 | return 1; | |
1347 | } | |
1348 | if (*buf == TYPE_WORM) { | |
1349 | *device_type = TYPE_WORM; | |
1350 | *block_length = 2048; | |
1351 | return 1; | |
1352 | } | |
1353 | if (*buf == TYPE_DISK) { | |
1354 | *device_type = TYPE_DISK; | |
67b2009a | 1355 | if (read_capacity(shpnt, ldn)) { |
1da177e4 LT |
1356 | *block_length = *(buf + 7) + (*(buf + 6) << 8) + (*(buf + 5) << 16) + (*(buf + 4) << 24); |
1357 | return 1; | |
1358 | } else | |
1359 | return 0; | |
1360 | } | |
1361 | if (*buf == TYPE_MOD) { | |
1362 | *device_type = TYPE_MOD; | |
67b2009a | 1363 | if (read_capacity(shpnt, ldn)) { |
1da177e4 LT |
1364 | *block_length = *(buf + 7) + (*(buf + 6) << 8) + (*(buf + 5) << 16) + (*(buf + 4) << 24); |
1365 | return 1; | |
1366 | } else | |
1367 | return 0; | |
1368 | } | |
1369 | if (*buf == TYPE_TAPE) { | |
1370 | *device_type = TYPE_TAPE; | |
1371 | *block_length = 0; /* not in use (setting by mt and mtst in op.) */ | |
1372 | return 1; | |
1373 | } | |
1374 | if (*buf == TYPE_PROCESSOR) { | |
1375 | *device_type = TYPE_PROCESSOR; | |
1376 | *block_length = 0; /* they set their stuff on drivers */ | |
1377 | return 1; | |
1378 | } | |
1379 | if (*buf == TYPE_SCANNER) { | |
1380 | *device_type = TYPE_SCANNER; | |
1381 | *block_length = 0; /* they set their stuff on drivers */ | |
1382 | return 1; | |
1383 | } | |
1384 | if (*buf == TYPE_MEDIUM_CHANGER) { | |
1385 | *device_type = TYPE_MEDIUM_CHANGER; | |
1386 | *block_length = 0; /* One never knows, what to expect on a medium | |
1387 | changer device. */ | |
1388 | return 1; | |
1389 | } | |
1390 | return 0; | |
1391 | } | |
1392 | ||
1393 | static void internal_ibmmca_scsi_setup(char *str, int *ints) | |
1394 | { | |
1395 | int i, j, io_base, id_base; | |
1396 | char *token; | |
1397 | ||
1398 | io_base = 0; | |
1399 | id_base = 0; | |
1400 | if (str) { | |
1401 | j = 0; | |
1402 | while ((token = strsep(&str, ",")) != NULL) { | |
1403 | if (!strcmp(token, "activity")) | |
1404 | display_mode |= LED_ACTIVITY; | |
1405 | if (!strcmp(token, "display")) | |
1406 | display_mode |= LED_DISP; | |
1407 | if (!strcmp(token, "adisplay")) | |
1408 | display_mode |= LED_ADISP; | |
1409 | if (!strcmp(token, "normal")) | |
1410 | ibm_ansi_order = 0; | |
1411 | if (!strcmp(token, "ansi")) | |
1412 | ibm_ansi_order = 1; | |
1413 | if (!strcmp(token, "fast")) | |
1414 | global_adapter_speed = 0; | |
1415 | if (!strcmp(token, "medium")) | |
1416 | global_adapter_speed = 4; | |
1417 | if (!strcmp(token, "slow")) | |
1418 | global_adapter_speed = 7; | |
1419 | if ((*token == '-') || (isdigit(*token))) { | |
1420 | if (!(j % 2) && (io_base < IM_MAX_HOSTS)) | |
1421 | io_port[io_base++] = simple_strtoul(token, NULL, 0); | |
1422 | if ((j % 2) && (id_base < IM_MAX_HOSTS)) | |
1423 | scsi_id[id_base++] = simple_strtoul(token, NULL, 0); | |
1424 | j++; | |
1425 | } | |
1426 | } | |
1427 | } else if (ints) { | |
1428 | for (i = 0; i < IM_MAX_HOSTS && 2 * i + 2 < ints[0]; i++) { | |
1429 | io_port[i] = ints[2 * i + 2]; | |
1430 | scsi_id[i] = ints[2 * i + 2]; | |
1431 | } | |
1432 | } | |
1433 | return; | |
1434 | } | |
1435 | ||
67b2009a JB |
1436 | #if 0 |
1437 | FIXME NEED TO MOVE TO SYSFS | |
1438 | ||
1da177e4 LT |
1439 | static int ibmmca_getinfo(char *buf, int slot, void *dev_id) |
1440 | { | |
1441 | struct Scsi_Host *shpnt; | |
1442 | int len, speciale, connectore, k; | |
1443 | unsigned int pos[8]; | |
1444 | unsigned long flags; | |
1445 | struct Scsi_Host *dev = dev_id; | |
1446 | ||
1447 | spin_lock_irqsave(dev->host_lock, flags); | |
6391a113 | 1448 | |
1da177e4 LT |
1449 | shpnt = dev; /* assign host-structure to local pointer */ |
1450 | len = 0; /* set filled text-buffer index to 0 */ | |
1451 | /* get the _special contents of the hostdata structure */ | |
1452 | speciale = ((struct ibmmca_hostdata *) shpnt->hostdata)->_special; | |
1453 | connectore = ((struct ibmmca_hostdata *) shpnt->hostdata)->_connector_size; | |
1454 | for (k = 2; k < 4; k++) | |
1455 | pos[k] = ((struct ibmmca_hostdata *) shpnt->hostdata)->_pos[k]; | |
1456 | if (speciale == FORCED_DETECTION) { /* forced detection */ | |
1457 | len += sprintf(buf + len, | |
1458 | "Adapter category: forced detected\n" "***************************************\n" "*** Forced detected SCSI Adapter ***\n" "*** No chip-information available ***\n" "***************************************\n"); | |
1459 | } else if (speciale == INTEGRATED_SCSI) { | |
1460 | /* if the integrated subsystem has been found automatically: */ | |
1461 | len += sprintf(buf + len, | |
1462 | "Adapter category: integrated\n" "Chip revision level: %d\n" "Chip status: %s\n" "8 kByte NVRAM status: %s\n", ((pos[2] & 0xf0) >> 4), (pos[2] & 1) ? "enabled" : "disabled", (pos[2] & 2) ? "locked" : "accessible"); | |
6391a113 | 1463 | } else if ((speciale >= 0) && (speciale < ARRAY_SIZE(subsys_list))) { |
1da177e4 LT |
1464 | /* if the subsystem is a slot adapter */ |
1465 | len += sprintf(buf + len, "Adapter category: slot-card\n" "ROM Segment Address: "); | |
1466 | if ((pos[2] & 0xf0) == 0xf0) | |
1467 | len += sprintf(buf + len, "off\n"); | |
1468 | else | |
1469 | len += sprintf(buf + len, "0x%x\n", ((pos[2] & 0xf0) << 13) + 0xc0000); | |
1470 | len += sprintf(buf + len, "Chip status: %s\n", (pos[2] & 1) ? "enabled" : "disabled"); | |
1471 | len += sprintf(buf + len, "Adapter I/O Offset: 0x%x\n", ((pos[2] & 0x0e) << 2)); | |
1472 | } else { | |
1473 | len += sprintf(buf + len, "Adapter category: unknown\n"); | |
1474 | } | |
1475 | /* common subsystem information to write to the slotn file */ | |
1476 | len += sprintf(buf + len, "Subsystem PUN: %d\n", shpnt->this_id); | |
1477 | len += sprintf(buf + len, "I/O base address range: 0x%x-0x%x\n", (unsigned int) (shpnt->io_port), (unsigned int) (shpnt->io_port + 7)); | |
1478 | len += sprintf(buf + len, "MCA-slot size: %d bits", connectore); | |
1479 | /* Now make sure, the bufferlength is devidable by 4 to avoid | |
1480 | * paging problems of the buffer. */ | |
1481 | while (len % sizeof(int) != (sizeof(int) - 1)) | |
1482 | len += sprintf(buf + len, " "); | |
1483 | len += sprintf(buf + len, "\n"); | |
6391a113 | 1484 | |
1da177e4 | 1485 | spin_unlock_irqrestore(shpnt->host_lock, flags); |
6391a113 | 1486 | |
1da177e4 LT |
1487 | return len; |
1488 | } | |
67b2009a | 1489 | #endif |
1da177e4 | 1490 | |
67b2009a JB |
1491 | static struct scsi_host_template ibmmca_driver_template = { |
1492 | .proc_name = "ibmmca", | |
1493 | .proc_info = ibmmca_proc_info, | |
1494 | .name = "IBM SCSI-Subsystem", | |
1495 | .queuecommand = ibmmca_queuecommand, | |
1496 | .eh_abort_handler = ibmmca_abort, | |
1497 | .eh_host_reset_handler = ibmmca_host_reset, | |
1498 | .bios_param = ibmmca_biosparam, | |
1499 | .can_queue = 16, | |
1500 | .this_id = 7, | |
1501 | .sg_tablesize = 16, | |
1502 | .cmd_per_lun = 1, | |
1503 | .use_clustering = ENABLE_CLUSTERING, | |
1504 | }; | |
1505 | ||
1506 | static int ibmmca_probe(struct device *dev) | |
1da177e4 LT |
1507 | { |
1508 | struct Scsi_Host *shpnt; | |
67b2009a JB |
1509 | int port, id, i, j, k, irq, enabled, ret = -EINVAL; |
1510 | struct mca_device *mca_dev = to_mca_device(dev); | |
1511 | const char *description = ibmmca_description[mca_dev->index]; | |
1da177e4 LT |
1512 | |
1513 | /* First of all, print the version number of the driver. This is | |
1514 | * important to allow better user bugreports in case of already | |
1515 | * having problems with the MCA_bus probing. */ | |
1516 | printk(KERN_INFO "IBM MCA SCSI: Version %s\n", IBMMCA_SCSI_DRIVER_VERSION); | |
1da177e4 LT |
1517 | /* The POS2-register of all PS/2 model SCSI-subsystems has the following |
1518 | * interpretation of bits: | |
1519 | * Bit 7 - 4 : Chip Revision ID (Release) | |
1520 | * Bit 3 - 2 : Reserved | |
1521 | * Bit 1 : 8k NVRAM Disabled | |
1522 | * Bit 0 : Chip Enable (EN-Signal) | |
1523 | * The POS3-register is interpreted as follows: | |
1524 | * Bit 7 - 5 : SCSI ID | |
1525 | * Bit 4 : Reserved = 0 | |
1526 | * Bit 3 - 0 : Reserved = 0 | |
1527 | * (taken from "IBM, PS/2 Hardware Interface Technical Reference, Common | |
1528 | * Interfaces (1991)"). | |
1529 | * In short words, this means, that IBM PS/2 machines only support | |
1530 | * 1 single subsystem by default. The slot-adapters must have another | |
1531 | * configuration on pos2. Here, one has to assume the following | |
1532 | * things for POS2-register: | |
1533 | * Bit 7 - 4 : Chip Revision ID (Release) | |
1534 | * Bit 3 - 1 : port offset factor | |
1535 | * Bit 0 : Chip Enable (EN-Signal) | |
1536 | * As I found a patch here, setting the IO-registers to 0x3540 forced, | |
1537 | * as there was a 0x05 in POS2 on a model 56, I assume, that the | |
1538 | * port 0x3540 must be fix for integrated SCSI-controllers. | |
1539 | * Ok, this discovery leads to the following implementation: (M.Lang) */ | |
1540 | ||
1541 | /* first look for the IBM SCSI integrated subsystem on the motherboard */ | |
1542 | for (j = 0; j < 8; j++) /* read the pos-information */ | |
67b2009a JB |
1543 | pos[j] = mca_device_read_pos(mca_dev, j); |
1544 | id = (pos[3] & 0xe0) >> 5; /* this is correct and represents the PUN */ | |
1545 | enabled = (pos[2] &0x01); | |
1546 | if (!enabled) { | |
1547 | printk(KERN_WARNING "IBM MCA SCSI: WARNING - Your SCSI-subsystem is disabled!\n"); | |
1548 | printk(KERN_WARNING " SCSI-operations may not work.\n"); | |
1549 | } | |
1550 | ||
1da177e4 LT |
1551 | /* pos2 = pos3 = 0xff if there is no integrated SCSI-subsystem present, but |
1552 | * if we ignore the settings of all surrounding pos registers, it is not | |
1553 | * completely sufficient to only check pos2 and pos3. */ | |
1554 | /* Therefore, now the following if statement is used to | |
1555 | * make sure, we see a real integrated onboard SCSI-interface and no | |
1556 | * internal system information, which gets mapped to some pos registers | |
1557 | * on models 95xx. */ | |
67b2009a JB |
1558 | if (mca_dev->slot == MCA_INTEGSCSI && |
1559 | ((!pos[0] && !pos[1] && pos[2] > 0 && | |
1560 | pos[3] > 0 && !pos[4] && !pos[5] && | |
1561 | !pos[6] && !pos[7]) || | |
1562 | (pos[0] == 0xff && pos[1] == 0xff && | |
1563 | pos[2] < 0xff && pos[3] < 0xff && | |
1564 | pos[4] == 0xff && pos[5] == 0xff && | |
1565 | pos[6] == 0xff && pos[7] == 0xff))) { | |
1566 | irq = IM_IRQ; | |
1567 | port = IM_IO_PORT; | |
1568 | } else { | |
1569 | irq = IM_IRQ; | |
1570 | port = IM_IO_PORT + ((pos[2] &0x0e) << 2); | |
1571 | if ((mca_dev->index == IBM_SCSI2_FW) && (pos[6] != 0)) { | |
1572 | printk(KERN_ERR "IBM MCA SCSI: ERROR - Wrong POS(6)-register setting!\n"); | |
1573 | printk(KERN_ERR " Impossible to determine adapter PUN!\n"); | |
1574 | printk(KERN_ERR " Guessing adapter PUN = 7.\n"); | |
1575 | id = 7; | |
1576 | } else { | |
1577 | id = (pos[3] & 0xe0) >> 5; /* get subsystem PUN */ | |
1578 | if (mca_dev->index == IBM_SCSI2_FW) { | |
1579 | id |= (pos[3] & 0x10) >> 1; /* get subsystem PUN high-bit | |
1580 | * for F/W adapters */ | |
1581 | } | |
1da177e4 | 1582 | } |
67b2009a JB |
1583 | if ((mca_dev->index == IBM_SCSI2_FW) && |
1584 | (pos[4] & 0x01) && (pos[6] == 0)) { | |
1585 | /* IRQ11 is used by SCSI-2 F/W Adapter/A */ | |
1586 | printk(KERN_DEBUG "IBM MCA SCSI: SCSI-2 F/W adapter needs IRQ 11.\n"); | |
1587 | irq = IM_IRQ_FW; | |
1da177e4 LT |
1588 | } |
1589 | } | |
1590 | ||
1da177e4 | 1591 | |
1da177e4 | 1592 | |
67b2009a JB |
1593 | /* give detailed information on the subsystem. This helps me |
1594 | * additionally during debugging and analyzing bug-reports. */ | |
1595 | printk(KERN_INFO "IBM MCA SCSI: %s found, io=0x%x, scsi id=%d,\n", | |
1596 | description, port, id); | |
1597 | if (mca_dev->slot == MCA_INTEGSCSI) | |
1598 | 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."); | |
1599 | else { | |
1600 | if ((pos[2] & 0xf0) == 0xf0) | |
1601 | printk(KERN_DEBUG " ROM Addr.=off,"); | |
1602 | else | |
1603 | printk(KERN_DEBUG " ROM Addr.=0x%x,", ((pos[2] & 0xf0) << 13) + 0xc0000); | |
1604 | ||
1605 | printk(KERN_DEBUG " port-offset=0x%x, subsystem=%s\n", ((pos[2] & 0x0e) << 2), (pos[2] & 1) ? "enabled." : "disabled."); | |
1606 | } | |
1da177e4 LT |
1607 | |
1608 | /* check I/O region */ | |
67b2009a | 1609 | if (!request_region(port, IM_N_IO_PORT, description)) { |
1da177e4 | 1610 | 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); |
67b2009a | 1611 | goto out_fail; |
1da177e4 LT |
1612 | } |
1613 | ||
1614 | /* register host */ | |
67b2009a JB |
1615 | shpnt = scsi_host_alloc(&ibmmca_driver_template, |
1616 | sizeof(struct ibmmca_hostdata)); | |
1da177e4 LT |
1617 | if (!shpnt) { |
1618 | printk(KERN_ERR "IBM MCA SCSI: Unable to register host.\n"); | |
67b2009a JB |
1619 | goto out_release; |
1620 | } | |
1621 | ||
1622 | dev_set_drvdata(dev, shpnt); | |
1623 | if(request_irq(irq, interrupt_handler, IRQF_SHARED, description, dev)) { | |
1624 | printk(KERN_ERR "IBM MCA SCSI: failed to request interrupt %d\n", irq); | |
1625 | goto out_free_host; | |
1da177e4 LT |
1626 | } |
1627 | ||
1628 | /* request I/O region */ | |
67b2009a JB |
1629 | special(shpnt) = mca_dev->index; /* important assignment or else crash! */ |
1630 | subsystem_connector_size(shpnt) = 0; /* preset slot-size */ | |
1631 | shpnt->irq = irq; /* assign necessary stuff for the adapter */ | |
1da177e4 LT |
1632 | shpnt->io_port = port; |
1633 | shpnt->n_io_port = IM_N_IO_PORT; | |
1634 | shpnt->this_id = id; | |
1635 | shpnt->max_id = 8; /* 8 PUNs are default */ | |
1636 | /* now, the SCSI-subsystem is connected to Linux */ | |
1637 | ||
1da177e4 | 1638 | #ifdef IM_DEBUG_PROBE |
67b2009a | 1639 | ctrl = (unsigned int) (inb(IM_CTR_REG(found))); /* get control-register status */ |
1da177e4 LT |
1640 | printk("IBM MCA SCSI: Control Register contents: %x, status: %x\n", ctrl, inb(IM_STAT_REG(found))); |
1641 | printk("IBM MCA SCSI: This adapters' POS-registers: "); | |
1642 | for (i = 0; i < 8; i++) | |
1643 | printk("%x ", pos[i]); | |
1644 | printk("\n"); | |
1645 | #endif | |
67b2009a | 1646 | reset_status(shpnt) = IM_RESET_NOT_IN_PROGRESS; |
1da177e4 LT |
1647 | |
1648 | for (i = 0; i < 16; i++) /* reset the tables */ | |
1649 | for (j = 0; j < 8; j++) | |
67b2009a | 1650 | get_ldn(shpnt)[i][j] = MAX_LOG_DEV; |
1da177e4 LT |
1651 | |
1652 | /* check which logical devices exist */ | |
1653 | /* after this line, local interrupting is possible: */ | |
67b2009a JB |
1654 | local_checking_phase_flag(shpnt) = 1; |
1655 | check_devices(shpnt, mca_dev->index); /* call by value, using the global variable hosts */ | |
1656 | local_checking_phase_flag(shpnt) = 0; | |
1657 | ||
1da177e4 | 1658 | /* an ibm mca subsystem has been detected */ |
67b2009a JB |
1659 | |
1660 | for (k = 2; k < 7; k++) | |
1661 | ((struct ibmmca_hostdata *) shpnt->hostdata)->_pos[k] = pos[k]; | |
1662 | ((struct ibmmca_hostdata *) shpnt->hostdata)->_special = INTEGRATED_SCSI; | |
1663 | mca_device_set_name(mca_dev, description); | |
1664 | /* FIXME: NEED TO REPLUMB TO SYSFS | |
1665 | mca_set_adapter_procfn(MCA_INTEGSCSI, (MCA_ProcFn) ibmmca_getinfo, shpnt); | |
1666 | */ | |
1667 | mca_device_set_claim(mca_dev, 1); | |
1668 | if (scsi_add_host(shpnt, dev)) { | |
1669 | dev_printk(KERN_ERR, dev, "IBM MCA SCSI: scsi_add_host failed\n"); | |
1670 | goto out_free_host; | |
1671 | } | |
1672 | scsi_scan_host(shpnt); | |
1673 | ||
1674 | return 0; | |
1675 | out_free_host: | |
1676 | scsi_host_put(shpnt); | |
1677 | out_release: | |
1678 | release_region(port, IM_N_IO_PORT); | |
1679 | out_fail: | |
1680 | return ret; | |
1da177e4 LT |
1681 | } |
1682 | ||
67b2009a | 1683 | static int __devexit ibmmca_remove(struct device *dev) |
1da177e4 | 1684 | { |
67b2009a JB |
1685 | struct Scsi_Host *shpnt = dev_get_drvdata(dev); |
1686 | scsi_remove_host(shpnt); | |
1da177e4 | 1687 | release_region(shpnt->io_port, shpnt->n_io_port); |
67b2009a | 1688 | free_irq(shpnt->irq, dev); |
34f8f0d2 | 1689 | scsi_host_put(shpnt); |
1da177e4 LT |
1690 | return 0; |
1691 | } | |
1692 | ||
1693 | /* The following routine is the SCSI command queue for the midlevel driver */ | |
1694 | static int ibmmca_queuecommand(Scsi_Cmnd * cmd, void (*done) (Scsi_Cmnd *)) | |
1695 | { | |
1696 | unsigned int ldn; | |
1697 | unsigned int scsi_cmd; | |
1698 | struct im_scb *scb; | |
1699 | struct Scsi_Host *shpnt; | |
1700 | int current_ldn; | |
1701 | int id, lun; | |
1702 | int target; | |
1da177e4 LT |
1703 | int max_pun; |
1704 | int i; | |
5f60ef6a | 1705 | struct scatterlist *sg; |
1da177e4 LT |
1706 | |
1707 | shpnt = cmd->device->host; | |
1da177e4 | 1708 | |
67b2009a | 1709 | max_pun = subsystem_maxid(shpnt); |
1da177e4 LT |
1710 | if (ibm_ansi_order) { |
1711 | target = max_pun - 1 - cmd->device->id; | |
67b2009a | 1712 | if ((target <= subsystem_pun(shpnt)) && (cmd->device->id <= subsystem_pun(shpnt))) |
1da177e4 | 1713 | target--; |
67b2009a | 1714 | else if ((target >= subsystem_pun(shpnt)) && (cmd->device->id >= subsystem_pun(shpnt))) |
1da177e4 LT |
1715 | target++; |
1716 | } else | |
1717 | target = cmd->device->id; | |
1718 | ||
1719 | /* if (target,lun) is NO LUN or not existing at all, return error */ | |
67b2009a | 1720 | if ((get_scsi(shpnt)[target][cmd->device->lun] == TYPE_NO_LUN) || (get_scsi(shpnt)[target][cmd->device->lun] == TYPE_NO_DEVICE)) { |
1da177e4 LT |
1721 | cmd->result = DID_NO_CONNECT << 16; |
1722 | if (done) | |
1723 | done(cmd); | |
1724 | return 0; | |
1725 | } | |
1726 | ||
1727 | /*if (target,lun) unassigned, do further checks... */ | |
67b2009a | 1728 | ldn = get_ldn(shpnt)[target][cmd->device->lun]; |
1da177e4 LT |
1729 | if (ldn >= MAX_LOG_DEV) { /* on invalid ldn do special stuff */ |
1730 | if (ldn > MAX_LOG_DEV) { /* dynamical remapping if ldn unassigned */ | |
67b2009a JB |
1731 | current_ldn = next_ldn(shpnt); /* stop-value for one circle */ |
1732 | while (ld(shpnt)[next_ldn(shpnt)].cmd) { /* search for a occupied, but not in */ | |
1da177e4 | 1733 | /* command-processing ldn. */ |
67b2009a JB |
1734 | next_ldn(shpnt)++; |
1735 | if (next_ldn(shpnt) >= MAX_LOG_DEV) | |
1736 | next_ldn(shpnt) = 7; | |
1737 | if (current_ldn == next_ldn(shpnt)) { /* One circle done ? */ | |
1da177e4 | 1738 | /* no non-processing ldn found */ |
017560fc JG |
1739 | scmd_printk(KERN_WARNING, cmd, |
1740 | "IBM MCA SCSI: Cannot assign SCSI-device dynamically!\n" | |
1741 | " On ldn 7-14 SCSI-commands everywhere in progress.\n" | |
1742 | " Reporting DID_NO_CONNECT for device.\n"); | |
1da177e4 LT |
1743 | cmd->result = DID_NO_CONNECT << 16; /* return no connect */ |
1744 | if (done) | |
1745 | done(cmd); | |
1746 | return 0; | |
1747 | } | |
1748 | } | |
1749 | ||
1750 | /* unmap non-processing ldn */ | |
1751 | for (id = 0; id < max_pun; id++) | |
1752 | for (lun = 0; lun < 8; lun++) { | |
67b2009a JB |
1753 | if (get_ldn(shpnt)[id][lun] == next_ldn(shpnt)) { |
1754 | get_ldn(shpnt)[id][lun] = TYPE_NO_DEVICE; | |
1755 | get_scsi(shpnt)[id][lun] = TYPE_NO_DEVICE; | |
1da177e4 LT |
1756 | /* unmap entry */ |
1757 | } | |
1758 | } | |
1759 | /* set reduced interrupt_handler-mode for checking */ | |
67b2009a | 1760 | local_checking_phase_flag(shpnt) = 1; |
1da177e4 | 1761 | /* map found ldn to pun,lun */ |
67b2009a | 1762 | get_ldn(shpnt)[target][cmd->device->lun] = next_ldn(shpnt); |
1da177e4 | 1763 | /* change ldn to the right value, that is now next_ldn */ |
67b2009a | 1764 | ldn = next_ldn(shpnt); |
1da177e4 | 1765 | /* unassign all ldns (pun,lun,ldn does not matter for remove) */ |
67b2009a | 1766 | immediate_assign(shpnt, 0, 0, 0, REMOVE_LDN); |
1da177e4 | 1767 | /* set only LDN for remapped device */ |
67b2009a | 1768 | immediate_assign(shpnt, target, cmd->device->lun, ldn, SET_LDN); |
1da177e4 | 1769 | /* get device information for ld[ldn] */ |
67b2009a JB |
1770 | if (device_exists(shpnt, ldn, &ld(shpnt)[ldn].block_length, &ld(shpnt)[ldn].device_type)) { |
1771 | ld(shpnt)[ldn].cmd = NULL; /* To prevent panic set 0, because | |
1da177e4 LT |
1772 | devices that were not assigned, |
1773 | should have nothing in progress. */ | |
67b2009a | 1774 | get_scsi(shpnt)[target][cmd->device->lun] = ld(shpnt)[ldn].device_type; |
1da177e4 | 1775 | /* increase assignment counters for statistics in /proc */ |
67b2009a JB |
1776 | IBM_DS(shpnt).dynamical_assignments++; |
1777 | IBM_DS(shpnt).ldn_assignments[ldn]++; | |
1da177e4 LT |
1778 | } else |
1779 | /* panic here, because a device, found at boottime has | |
1780 | vanished */ | |
1781 | panic("IBM MCA SCSI: ldn=0x%x, SCSI-device on (%d,%d) vanished!\n", ldn, target, cmd->device->lun); | |
1782 | /* unassign again all ldns (pun,lun,ldn does not matter for remove) */ | |
67b2009a | 1783 | immediate_assign(shpnt, 0, 0, 0, REMOVE_LDN); |
1da177e4 LT |
1784 | /* remap all ldns, as written in the pun/lun table */ |
1785 | lun = 0; | |
1786 | #ifdef CONFIG_SCSI_MULTI_LUN | |
1787 | for (lun = 0; lun < 8; lun++) | |
1788 | #endif | |
1789 | for (id = 0; id < max_pun; id++) { | |
67b2009a JB |
1790 | if (get_ldn(shpnt)[id][lun] <= MAX_LOG_DEV) |
1791 | immediate_assign(shpnt, id, lun, get_ldn(shpnt)[id][lun], SET_LDN); | |
1da177e4 LT |
1792 | } |
1793 | /* set back to normal interrupt_handling */ | |
67b2009a | 1794 | local_checking_phase_flag(shpnt) = 0; |
1da177e4 LT |
1795 | #ifdef IM_DEBUG_PROBE |
1796 | /* Information on syslog terminal */ | |
1797 | printk("IBM MCA SCSI: ldn=0x%x dynamically reassigned to (%d,%d).\n", ldn, target, cmd->device->lun); | |
1798 | #endif | |
1799 | /* increase next_ldn for next dynamical assignment */ | |
67b2009a JB |
1800 | next_ldn(shpnt)++; |
1801 | if (next_ldn(shpnt) >= MAX_LOG_DEV) | |
1802 | next_ldn(shpnt) = 7; | |
1da177e4 LT |
1803 | } else { /* wall against Linux accesses to the subsystem adapter */ |
1804 | cmd->result = DID_BAD_TARGET << 16; | |
1805 | if (done) | |
1806 | done(cmd); | |
1807 | return 0; | |
1808 | } | |
1809 | } | |
1810 | ||
1811 | /*verify there is no command already in progress for this log dev */ | |
67b2009a | 1812 | if (ld(shpnt)[ldn].cmd) |
1da177e4 LT |
1813 | panic("IBM MCA SCSI: cmd already in progress for this ldn.\n"); |
1814 | ||
1815 | /*save done in cmd, and save cmd for the interrupt handler */ | |
1816 | cmd->scsi_done = done; | |
67b2009a | 1817 | ld(shpnt)[ldn].cmd = cmd; |
1da177e4 LT |
1818 | |
1819 | /*fill scb information independent of the scsi command */ | |
67b2009a JB |
1820 | scb = &(ld(shpnt)[ldn].scb); |
1821 | ld(shpnt)[ldn].tsb.dev_status = 0; | |
1da177e4 | 1822 | scb->enable = IM_REPORT_TSB_ONLY_ON_ERROR | IM_RETRY_ENABLE; |
67b2009a | 1823 | scb->tsb_adr = isa_virt_to_bus(&(ld(shpnt)[ldn].tsb)); |
1da177e4 LT |
1824 | scsi_cmd = cmd->cmnd[0]; |
1825 | ||
5f60ef6a FT |
1826 | if (scsi_sg_count(cmd)) { |
1827 | BUG_ON(scsi_sg_count(cmd) > 16); | |
1828 | ||
1829 | scsi_for_each_sg(cmd, sg, scsi_sg_count(cmd), i) { | |
45711f1a | 1830 | ld(shpnt)[ldn].sge[i].address = (void *) (isa_page_to_bus(sg_page(sg)) + sg->offset); |
5f60ef6a | 1831 | ld(shpnt)[ldn].sge[i].byte_length = sg->length; |
1da177e4 LT |
1832 | } |
1833 | scb->enable |= IM_POINTER_TO_LIST; | |
67b2009a | 1834 | scb->sys_buf_adr = isa_virt_to_bus(&(ld(shpnt)[ldn].sge[0])); |
5f60ef6a | 1835 | scb->sys_buf_length = scsi_sg_count(cmd) * sizeof(struct im_sge); |
1da177e4 | 1836 | } else { |
5f60ef6a | 1837 | scb->sys_buf_adr = isa_virt_to_bus(scsi_sglist(cmd)); |
1da177e4 LT |
1838 | /* recent Linux midlevel SCSI places 1024 byte for inquiry |
1839 | * command. Far too much for old PS/2 hardware. */ | |
1840 | switch (scsi_cmd) { | |
1841 | /* avoid command errors by setting bufferlengths to | |
1842 | * ANSI-standard. Beware of forcing it to 255, | |
1843 | * this could SEGV the kernel!!! */ | |
1844 | case INQUIRY: | |
1845 | case REQUEST_SENSE: | |
1846 | case MODE_SENSE: | |
1847 | case MODE_SELECT: | |
5f60ef6a | 1848 | if (scsi_bufflen(cmd) > 255) |
1da177e4 LT |
1849 | scb->sys_buf_length = 255; |
1850 | else | |
5f60ef6a | 1851 | scb->sys_buf_length = scsi_bufflen(cmd); |
1da177e4 LT |
1852 | break; |
1853 | case TEST_UNIT_READY: | |
1854 | scb->sys_buf_length = 0; | |
1855 | break; | |
1856 | default: | |
5f60ef6a | 1857 | scb->sys_buf_length = scsi_bufflen(cmd); |
1da177e4 LT |
1858 | break; |
1859 | } | |
1860 | } | |
1861 | /*fill scb information dependent on scsi command */ | |
1862 | ||
1863 | #ifdef IM_DEBUG_CMD | |
1864 | printk("issue scsi cmd=%02x to ldn=%d\n", scsi_cmd, ldn); | |
1865 | #endif | |
1866 | ||
1867 | /* for specific device-type debugging: */ | |
1868 | #ifdef IM_DEBUG_CMD_SPEC_DEV | |
67b2009a JB |
1869 | if (ld(shpnt)[ldn].device_type == IM_DEBUG_CMD_DEVICE) |
1870 | printk("(SCSI-device-type=0x%x) issue scsi cmd=%02x to ldn=%d\n", ld(shpnt)[ldn].device_type, scsi_cmd, ldn); | |
1da177e4 LT |
1871 | #endif |
1872 | ||
1873 | /* for possible panics store current command */ | |
67b2009a JB |
1874 | last_scsi_command(shpnt)[ldn] = scsi_cmd; |
1875 | last_scsi_type(shpnt)[ldn] = IM_SCB; | |
1da177e4 | 1876 | /* update statistical info */ |
67b2009a JB |
1877 | IBM_DS(shpnt).total_accesses++; |
1878 | IBM_DS(shpnt).ldn_access[ldn]++; | |
1da177e4 LT |
1879 | |
1880 | switch (scsi_cmd) { | |
1881 | case READ_6: | |
1882 | case WRITE_6: | |
1883 | case READ_10: | |
1884 | case WRITE_10: | |
1885 | case READ_12: | |
1886 | case WRITE_12: | |
1887 | /* Distinguish between disk and other devices. Only disks (that are the | |
1888 | most frequently accessed devices) should be supported by the | |
1889 | IBM-SCSI-Subsystem commands. */ | |
67b2009a | 1890 | switch (ld(shpnt)[ldn].device_type) { |
1da177e4 LT |
1891 | case TYPE_DISK: /* for harddisks enter here ... */ |
1892 | case TYPE_MOD: /* ... try it also for MO-drives (send flames as */ | |
1893 | /* you like, if this won't work.) */ | |
1894 | if (scsi_cmd == READ_6 || scsi_cmd == READ_10 || scsi_cmd == READ_12) { | |
1895 | /* read command preparations */ | |
1896 | scb->enable |= IM_READ_CONTROL; | |
67b2009a | 1897 | IBM_DS(shpnt).ldn_read_access[ldn]++; /* increase READ-access on ldn stat. */ |
1da177e4 LT |
1898 | scb->command = IM_READ_DATA_CMD | IM_NO_DISCONNECT; |
1899 | } else { /* write command preparations */ | |
67b2009a | 1900 | IBM_DS(shpnt).ldn_write_access[ldn]++; /* increase write-count on ldn stat. */ |
1da177e4 LT |
1901 | scb->command = IM_WRITE_DATA_CMD | IM_NO_DISCONNECT; |
1902 | } | |
1903 | if (scsi_cmd == READ_6 || scsi_cmd == WRITE_6) { | |
1904 | scb->u1.log_blk_adr = (((unsigned) cmd->cmnd[3]) << 0) | (((unsigned) cmd->cmnd[2]) << 8) | ((((unsigned) cmd->cmnd[1]) & 0x1f) << 16); | |
1905 | scb->u2.blk.count = (unsigned) cmd->cmnd[4]; | |
1906 | } else { | |
1907 | 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); | |
1908 | scb->u2.blk.count = (((unsigned) cmd->cmnd[8]) << 0) | (((unsigned) cmd->cmnd[7]) << 8); | |
1909 | } | |
67b2009a JB |
1910 | last_scsi_logical_block(shpnt)[ldn] = scb->u1.log_blk_adr; |
1911 | last_scsi_blockcount(shpnt)[ldn] = scb->u2.blk.count; | |
1912 | scb->u2.blk.length = ld(shpnt)[ldn].block_length; | |
1da177e4 LT |
1913 | break; |
1914 | /* for other devices, enter here. Other types are not known by | |
1915 | Linux! TYPE_NO_LUN is forbidden as valid device. */ | |
1916 | case TYPE_ROM: | |
1917 | case TYPE_TAPE: | |
1918 | case TYPE_PROCESSOR: | |
1919 | case TYPE_WORM: | |
1920 | case TYPE_SCANNER: | |
1921 | case TYPE_MEDIUM_CHANGER: | |
1922 | /* If there is a sequential-device, IBM recommends to use | |
1923 | IM_OTHER_SCSI_CMD_CMD instead of subsystem READ/WRITE. | |
1924 | This includes CD-ROM devices, too, due to the partial sequential | |
1925 | read capabilities. */ | |
1926 | scb->command = IM_OTHER_SCSI_CMD_CMD; | |
1927 | if (scsi_cmd == READ_6 || scsi_cmd == READ_10 || scsi_cmd == READ_12) | |
1928 | /* enable READ */ | |
1929 | scb->enable |= IM_READ_CONTROL; | |
1930 | scb->enable |= IM_BYPASS_BUFFER; | |
1931 | scb->u1.scsi_cmd_length = cmd->cmd_len; | |
1932 | memcpy(scb->u2.scsi_command, cmd->cmnd, cmd->cmd_len); | |
67b2009a | 1933 | last_scsi_type(shpnt)[ldn] = IM_LONG_SCB; |
1da177e4 LT |
1934 | /* Read/write on this non-disk devices is also displayworthy, |
1935 | so flash-up the LED/display. */ | |
1936 | break; | |
1937 | } | |
1938 | break; | |
1939 | case INQUIRY: | |
67b2009a | 1940 | IBM_DS(shpnt).ldn_inquiry_access[ldn]++; |
1da177e4 LT |
1941 | scb->command = IM_DEVICE_INQUIRY_CMD; |
1942 | scb->enable |= IM_READ_CONTROL | IM_SUPRESS_EXCEPTION_SHORT | IM_BYPASS_BUFFER; | |
1943 | scb->u1.log_blk_adr = 0; | |
1944 | break; | |
1945 | case TEST_UNIT_READY: | |
1946 | scb->command = IM_OTHER_SCSI_CMD_CMD; | |
1947 | scb->enable |= IM_READ_CONTROL | IM_SUPRESS_EXCEPTION_SHORT | IM_BYPASS_BUFFER; | |
1948 | scb->u1.log_blk_adr = 0; | |
1949 | scb->u1.scsi_cmd_length = 6; | |
1950 | memcpy(scb->u2.scsi_command, cmd->cmnd, 6); | |
67b2009a | 1951 | last_scsi_type(shpnt)[ldn] = IM_LONG_SCB; |
1da177e4 LT |
1952 | break; |
1953 | case READ_CAPACITY: | |
1954 | /* the length of system memory buffer must be exactly 8 bytes */ | |
1955 | scb->command = IM_READ_CAPACITY_CMD; | |
1956 | scb->enable |= IM_READ_CONTROL | IM_BYPASS_BUFFER; | |
1957 | if (scb->sys_buf_length > 8) | |
1958 | scb->sys_buf_length = 8; | |
1959 | break; | |
1960 | /* Commands that need read-only-mode (system <- device): */ | |
1961 | case REQUEST_SENSE: | |
1962 | scb->command = IM_REQUEST_SENSE_CMD; | |
1963 | scb->enable |= IM_READ_CONTROL | IM_SUPRESS_EXCEPTION_SHORT | IM_BYPASS_BUFFER; | |
1964 | break; | |
1965 | /* Commands that need write-only-mode (system -> device): */ | |
1966 | case MODE_SELECT: | |
1967 | case MODE_SELECT_10: | |
67b2009a | 1968 | IBM_DS(shpnt).ldn_modeselect_access[ldn]++; |
1da177e4 LT |
1969 | scb->command = IM_OTHER_SCSI_CMD_CMD; |
1970 | scb->enable |= IM_SUPRESS_EXCEPTION_SHORT | IM_BYPASS_BUFFER; /*Select needs WRITE-enabled */ | |
1971 | scb->u1.scsi_cmd_length = cmd->cmd_len; | |
1972 | memcpy(scb->u2.scsi_command, cmd->cmnd, cmd->cmd_len); | |
67b2009a | 1973 | last_scsi_type(shpnt)[ldn] = IM_LONG_SCB; |
1da177e4 LT |
1974 | break; |
1975 | /* For other commands, read-only is useful. Most other commands are | |
1976 | running without an input-data-block. */ | |
1977 | default: | |
1978 | scb->command = IM_OTHER_SCSI_CMD_CMD; | |
1979 | scb->enable |= IM_READ_CONTROL | IM_SUPRESS_EXCEPTION_SHORT | IM_BYPASS_BUFFER; | |
1980 | scb->u1.scsi_cmd_length = cmd->cmd_len; | |
1981 | memcpy(scb->u2.scsi_command, cmd->cmnd, cmd->cmd_len); | |
67b2009a | 1982 | last_scsi_type(shpnt)[ldn] = IM_LONG_SCB; |
1da177e4 LT |
1983 | break; |
1984 | } | |
1985 | /*issue scb command, and return */ | |
1986 | if (++disk_rw_in_progress == 1) | |
1987 | PS2_DISK_LED_ON(shpnt->host_no, target); | |
1988 | ||
67b2009a JB |
1989 | if (last_scsi_type(shpnt)[ldn] == IM_LONG_SCB) { |
1990 | issue_cmd(shpnt, isa_virt_to_bus(scb), IM_LONG_SCB | ldn); | |
1991 | IBM_DS(shpnt).long_scbs++; | |
1da177e4 | 1992 | } else { |
67b2009a JB |
1993 | issue_cmd(shpnt, isa_virt_to_bus(scb), IM_SCB | ldn); |
1994 | IBM_DS(shpnt).scbs++; | |
1da177e4 LT |
1995 | } |
1996 | return 0; | |
1997 | } | |
1998 | ||
8fa728a2 | 1999 | static int __ibmmca_abort(Scsi_Cmnd * cmd) |
1da177e4 LT |
2000 | { |
2001 | /* Abort does not work, as the adapter never generates an interrupt on | |
2002 | * whatever situation is simulated, even when really pending commands | |
2003 | * are running on the adapters' hardware ! */ | |
2004 | ||
2005 | struct Scsi_Host *shpnt; | |
2006 | unsigned int ldn; | |
2007 | void (*saved_done) (Scsi_Cmnd *); | |
2008 | int target; | |
1da177e4 LT |
2009 | int max_pun; |
2010 | unsigned long imm_command; | |
2011 | ||
2012 | #ifdef IM_DEBUG_PROBE | |
2013 | printk("IBM MCA SCSI: Abort subroutine called...\n"); | |
2014 | #endif | |
2015 | ||
2016 | shpnt = cmd->device->host; | |
1da177e4 | 2017 | |
67b2009a | 2018 | max_pun = subsystem_maxid(shpnt); |
1da177e4 LT |
2019 | if (ibm_ansi_order) { |
2020 | target = max_pun - 1 - cmd->device->id; | |
67b2009a | 2021 | if ((target <= subsystem_pun(shpnt)) && (cmd->device->id <= subsystem_pun(shpnt))) |
1da177e4 | 2022 | target--; |
67b2009a | 2023 | else if ((target >= subsystem_pun(shpnt)) && (cmd->device->id >= subsystem_pun(shpnt))) |
1da177e4 LT |
2024 | target++; |
2025 | } else | |
2026 | target = cmd->device->id; | |
2027 | ||
2028 | /* get logical device number, and disable system interrupts */ | |
2029 | printk(KERN_WARNING "IBM MCA SCSI: Sending abort to device pun=%d, lun=%d.\n", target, cmd->device->lun); | |
67b2009a | 2030 | ldn = get_ldn(shpnt)[target][cmd->device->lun]; |
1da177e4 LT |
2031 | |
2032 | /*if cmd for this ldn has already finished, no need to abort */ | |
67b2009a | 2033 | if (!ld(shpnt)[ldn].cmd) { |
1da177e4 LT |
2034 | return SUCCESS; |
2035 | } | |
2036 | ||
2037 | /* Clear ld.cmd, save done function, install internal done, | |
2038 | * send abort immediate command (this enables sys. interrupts), | |
2039 | * and wait until the interrupt arrives. | |
2040 | */ | |
2041 | saved_done = cmd->scsi_done; | |
2042 | cmd->scsi_done = internal_done; | |
2043 | cmd->SCp.Status = 0; | |
67b2009a JB |
2044 | last_scsi_command(shpnt)[ldn] = IM_ABORT_IMM_CMD; |
2045 | last_scsi_type(shpnt)[ldn] = IM_IMM_CMD; | |
2046 | imm_command = inl(IM_CMD_REG(shpnt)); | |
1da177e4 LT |
2047 | imm_command &= (unsigned long) (0xffff0000); /* mask reserved stuff */ |
2048 | imm_command |= (unsigned long) (IM_ABORT_IMM_CMD); | |
2049 | /* must wait for attention reg not busy */ | |
2050 | /* FIXME - timeout, politeness */ | |
2051 | while (1) { | |
67b2009a | 2052 | if (!(inb(IM_STAT_REG(shpnt)) & IM_BUSY)) |
1da177e4 LT |
2053 | break; |
2054 | } | |
2055 | /* write registers and enable system interrupts */ | |
67b2009a JB |
2056 | outl(imm_command, IM_CMD_REG(shpnt)); |
2057 | outb(IM_IMM_CMD | ldn, IM_ATTN_REG(shpnt)); | |
1da177e4 LT |
2058 | #ifdef IM_DEBUG_PROBE |
2059 | printk("IBM MCA SCSI: Abort queued to adapter...\n"); | |
2060 | #endif | |
2061 | spin_unlock_irq(shpnt->host_lock); | |
2062 | while (!cmd->SCp.Status) | |
2063 | yield(); | |
2064 | spin_lock_irq(shpnt->host_lock); | |
2065 | cmd->scsi_done = saved_done; | |
2066 | #ifdef IM_DEBUG_PROBE | |
2067 | printk("IBM MCA SCSI: Abort returned with adapter response...\n"); | |
2068 | #endif | |
2069 | ||
2070 | /*if abort went well, call saved done, then return success or error */ | |
2071 | if (cmd->result == (DID_ABORT << 16)) | |
2072 | { | |
2073 | cmd->result |= DID_ABORT << 16; | |
2074 | if (cmd->scsi_done) | |
2075 | (cmd->scsi_done) (cmd); | |
67b2009a | 2076 | ld(shpnt)[ldn].cmd = NULL; |
1da177e4 LT |
2077 | #ifdef IM_DEBUG_PROBE |
2078 | printk("IBM MCA SCSI: Abort finished with success.\n"); | |
2079 | #endif | |
2080 | return SUCCESS; | |
2081 | } else { | |
2082 | cmd->result |= DID_NO_CONNECT << 16; | |
2083 | if (cmd->scsi_done) | |
2084 | (cmd->scsi_done) (cmd); | |
67b2009a | 2085 | ld(shpnt)[ldn].cmd = NULL; |
1da177e4 LT |
2086 | #ifdef IM_DEBUG_PROBE |
2087 | printk("IBM MCA SCSI: Abort failed.\n"); | |
2088 | #endif | |
2089 | return FAILED; | |
2090 | } | |
2091 | } | |
2092 | ||
8fa728a2 JG |
2093 | static int ibmmca_abort(Scsi_Cmnd * cmd) |
2094 | { | |
2095 | struct Scsi_Host *shpnt = cmd->device->host; | |
2096 | int rc; | |
2097 | ||
2098 | spin_lock_irq(shpnt->host_lock); | |
2099 | rc = __ibmmca_abort(cmd); | |
2100 | spin_unlock_irq(shpnt->host_lock); | |
2101 | ||
2102 | return rc; | |
2103 | } | |
2104 | ||
df0ae249 | 2105 | static int __ibmmca_host_reset(Scsi_Cmnd * cmd) |
1da177e4 LT |
2106 | { |
2107 | struct Scsi_Host *shpnt; | |
2108 | Scsi_Cmnd *cmd_aid; | |
2109 | int ticks, i; | |
1da177e4 LT |
2110 | unsigned long imm_command; |
2111 | ||
125e1874 | 2112 | BUG_ON(cmd == NULL); |
1da177e4 LT |
2113 | |
2114 | ticks = IM_RESET_DELAY * HZ; | |
2115 | shpnt = cmd->device->host; | |
1da177e4 | 2116 | |
67b2009a | 2117 | if (local_checking_phase_flag(shpnt)) { |
1da177e4 LT |
2118 | printk(KERN_WARNING "IBM MCA SCSI: unable to reset while checking devices.\n"); |
2119 | return FAILED; | |
2120 | } | |
2121 | ||
2122 | /* issue reset immediate command to subsystem, and wait for interrupt */ | |
2123 | printk("IBM MCA SCSI: resetting all devices.\n"); | |
67b2009a JB |
2124 | reset_status(shpnt) = IM_RESET_IN_PROGRESS; |
2125 | last_scsi_command(shpnt)[0xf] = IM_RESET_IMM_CMD; | |
2126 | last_scsi_type(shpnt)[0xf] = IM_IMM_CMD; | |
2127 | imm_command = inl(IM_CMD_REG(shpnt)); | |
1da177e4 LT |
2128 | imm_command &= (unsigned long) (0xffff0000); /* mask reserved stuff */ |
2129 | imm_command |= (unsigned long) (IM_RESET_IMM_CMD); | |
2130 | /* must wait for attention reg not busy */ | |
2131 | while (1) { | |
67b2009a | 2132 | if (!(inb(IM_STAT_REG(shpnt)) & IM_BUSY)) |
1da177e4 LT |
2133 | break; |
2134 | spin_unlock_irq(shpnt->host_lock); | |
2135 | yield(); | |
2136 | spin_lock_irq(shpnt->host_lock); | |
2137 | } | |
2138 | /*write registers and enable system interrupts */ | |
67b2009a JB |
2139 | outl(imm_command, IM_CMD_REG(shpnt)); |
2140 | outb(IM_IMM_CMD | 0xf, IM_ATTN_REG(shpnt)); | |
1da177e4 LT |
2141 | /* wait for interrupt finished or intr_stat register to be set, as the |
2142 | * interrupt will not be executed, while we are in here! */ | |
2143 | ||
2144 | /* FIXME: This is really really icky we so want a sleeping version of this ! */ | |
67b2009a | 2145 | while (reset_status(shpnt) == IM_RESET_IN_PROGRESS && --ticks && ((inb(IM_INTR_REG(shpnt)) & 0x8f) != 0x8f)) { |
1da177e4 LT |
2146 | udelay((1 + 999 / HZ) * 1000); |
2147 | barrier(); | |
2148 | } | |
2149 | /* if reset did not complete, just return an error */ | |
2150 | if (!ticks) { | |
2151 | printk(KERN_ERR "IBM MCA SCSI: reset did not complete within %d seconds.\n", IM_RESET_DELAY); | |
67b2009a | 2152 | reset_status(shpnt) = IM_RESET_FINISHED_FAIL; |
1da177e4 LT |
2153 | return FAILED; |
2154 | } | |
2155 | ||
67b2009a | 2156 | if ((inb(IM_INTR_REG(shpnt)) & 0x8f) == 0x8f) { |
1da177e4 | 2157 | /* analysis done by this routine and not by the intr-routine */ |
67b2009a JB |
2158 | if (inb(IM_INTR_REG(shpnt)) == 0xaf) |
2159 | reset_status(shpnt) = IM_RESET_FINISHED_OK_NO_INT; | |
2160 | else if (inb(IM_INTR_REG(shpnt)) == 0xcf) | |
2161 | reset_status(shpnt) = IM_RESET_FINISHED_FAIL; | |
1da177e4 | 2162 | else /* failed, 4get it */ |
67b2009a JB |
2163 | reset_status(shpnt) = IM_RESET_NOT_IN_PROGRESS_NO_INT; |
2164 | outb(IM_EOI | 0xf, IM_ATTN_REG(shpnt)); | |
1da177e4 LT |
2165 | } |
2166 | ||
2167 | /* if reset failed, just return an error */ | |
67b2009a | 2168 | if (reset_status(shpnt) == IM_RESET_FINISHED_FAIL) { |
1da177e4 LT |
2169 | printk(KERN_ERR "IBM MCA SCSI: reset failed.\n"); |
2170 | return FAILED; | |
2171 | } | |
2172 | ||
2173 | /* so reset finished ok - call outstanding done's, and return success */ | |
2174 | printk(KERN_INFO "IBM MCA SCSI: Reset successfully completed.\n"); | |
2175 | for (i = 0; i < MAX_LOG_DEV; i++) { | |
67b2009a | 2176 | cmd_aid = ld(shpnt)[i].cmd; |
1da177e4 | 2177 | if (cmd_aid && cmd_aid->scsi_done) { |
67b2009a | 2178 | ld(shpnt)[i].cmd = NULL; |
1da177e4 LT |
2179 | cmd_aid->result = DID_RESET << 16; |
2180 | } | |
2181 | } | |
2182 | return SUCCESS; | |
2183 | } | |
2184 | ||
df0ae249 JG |
2185 | static int ibmmca_host_reset(Scsi_Cmnd * cmd) |
2186 | { | |
2187 | struct Scsi_Host *shpnt = cmd->device->host; | |
2188 | int rc; | |
2189 | ||
2190 | spin_lock_irq(shpnt->host_lock); | |
2191 | rc = __ibmmca_host_reset(cmd); | |
2192 | spin_unlock_irq(shpnt->host_lock); | |
2193 | ||
2194 | return rc; | |
2195 | } | |
2196 | ||
1da177e4 LT |
2197 | static int ibmmca_biosparam(struct scsi_device *sdev, struct block_device *bdev, sector_t capacity, int *info) |
2198 | { | |
2199 | int size = capacity; | |
2200 | info[0] = 64; | |
2201 | info[1] = 32; | |
2202 | info[2] = size / (info[0] * info[1]); | |
2203 | if (info[2] >= 1024) { | |
2204 | info[0] = 128; | |
2205 | info[1] = 63; | |
2206 | info[2] = size / (info[0] * info[1]); | |
2207 | if (info[2] >= 1024) { | |
2208 | info[0] = 255; | |
2209 | info[1] = 63; | |
2210 | info[2] = size / (info[0] * info[1]); | |
2211 | if (info[2] >= 1024) | |
2212 | info[2] = 1023; | |
2213 | } | |
2214 | } | |
2215 | return 0; | |
2216 | } | |
2217 | ||
2218 | /* calculate percentage of total accesses on a ldn */ | |
67b2009a | 2219 | static int ldn_access_load(struct Scsi_Host *shpnt, int ldn) |
1da177e4 | 2220 | { |
67b2009a | 2221 | if (IBM_DS(shpnt).total_accesses == 0) |
1da177e4 | 2222 | return (0); |
67b2009a | 2223 | if (IBM_DS(shpnt).ldn_access[ldn] == 0) |
1da177e4 | 2224 | return (0); |
67b2009a | 2225 | return (IBM_DS(shpnt).ldn_access[ldn] * 100) / IBM_DS(shpnt).total_accesses; |
1da177e4 LT |
2226 | } |
2227 | ||
2228 | /* calculate total amount of r/w-accesses */ | |
67b2009a | 2229 | static int ldn_access_total_read_write(struct Scsi_Host *shpnt) |
1da177e4 LT |
2230 | { |
2231 | int a; | |
2232 | int i; | |
2233 | ||
2234 | a = 0; | |
2235 | for (i = 0; i <= MAX_LOG_DEV; i++) | |
67b2009a | 2236 | a += IBM_DS(shpnt).ldn_read_access[i] + IBM_DS(shpnt).ldn_write_access[i]; |
1da177e4 LT |
2237 | return (a); |
2238 | } | |
2239 | ||
67b2009a | 2240 | static int ldn_access_total_inquiry(struct Scsi_Host *shpnt) |
1da177e4 LT |
2241 | { |
2242 | int a; | |
2243 | int i; | |
2244 | ||
2245 | a = 0; | |
2246 | for (i = 0; i <= MAX_LOG_DEV; i++) | |
67b2009a | 2247 | a += IBM_DS(shpnt).ldn_inquiry_access[i]; |
1da177e4 LT |
2248 | return (a); |
2249 | } | |
2250 | ||
67b2009a | 2251 | static int ldn_access_total_modeselect(struct Scsi_Host *shpnt) |
1da177e4 LT |
2252 | { |
2253 | int a; | |
2254 | int i; | |
2255 | ||
2256 | a = 0; | |
2257 | for (i = 0; i <= MAX_LOG_DEV; i++) | |
67b2009a | 2258 | a += IBM_DS(shpnt).ldn_modeselect_access[i]; |
1da177e4 LT |
2259 | return (a); |
2260 | } | |
2261 | ||
2262 | /* routine to display info in the proc-fs-structure (a deluxe feature) */ | |
2263 | static int ibmmca_proc_info(struct Scsi_Host *shpnt, char *buffer, char **start, off_t offset, int length, int inout) | |
2264 | { | |
2265 | int len = 0; | |
67b2009a | 2266 | int i, id, lun; |
1da177e4 LT |
2267 | unsigned long flags; |
2268 | int max_pun; | |
2269 | ||
1da177e4 | 2270 | |
67b2009a JB |
2271 | spin_lock_irqsave(shpnt->host_lock, flags); /* Check it */ |
2272 | ||
2273 | max_pun = subsystem_maxid(shpnt); | |
1da177e4 LT |
2274 | |
2275 | len += sprintf(buffer + len, "\n IBM-SCSI-Subsystem-Linux-Driver, Version %s\n\n\n", IBMMCA_SCSI_DRIVER_VERSION); | |
2276 | len += sprintf(buffer + len, " SCSI Access-Statistics:\n"); | |
2277 | len += sprintf(buffer + len, " Device Scanning Order....: %s\n", (ibm_ansi_order) ? "IBM/ANSI" : "New Industry Standard"); | |
2278 | #ifdef CONFIG_SCSI_MULTI_LUN | |
2279 | len += sprintf(buffer + len, " Multiple LUN probing.....: Yes\n"); | |
2280 | #else | |
2281 | len += sprintf(buffer + len, " Multiple LUN probing.....: No\n"); | |
2282 | #endif | |
2283 | len += sprintf(buffer + len, " This Hostnumber..........: %d\n", shpnt->host_no); | |
67b2009a | 2284 | len += sprintf(buffer + len, " Base I/O-Port............: 0x%x\n", (unsigned int) (IM_CMD_REG(shpnt))); |
1da177e4 | 2285 | len += sprintf(buffer + len, " (Shared) IRQ.............: %d\n", IM_IRQ); |
67b2009a JB |
2286 | len += sprintf(buffer + len, " Total Interrupts.........: %d\n", IBM_DS(shpnt).total_interrupts); |
2287 | len += sprintf(buffer + len, " Total SCSI Accesses......: %d\n", IBM_DS(shpnt).total_accesses); | |
2288 | len += sprintf(buffer + len, " Total short SCBs.........: %d\n", IBM_DS(shpnt).scbs); | |
2289 | len += sprintf(buffer + len, " Total long SCBs..........: %d\n", IBM_DS(shpnt).long_scbs); | |
2290 | len += sprintf(buffer + len, " Total SCSI READ/WRITE..: %d\n", ldn_access_total_read_write(shpnt)); | |
2291 | len += sprintf(buffer + len, " Total SCSI Inquiries...: %d\n", ldn_access_total_inquiry(shpnt)); | |
2292 | len += sprintf(buffer + len, " Total SCSI Modeselects.: %d\n", ldn_access_total_modeselect(shpnt)); | |
2293 | len += sprintf(buffer + len, " Total SCSI other cmds..: %d\n", IBM_DS(shpnt).total_accesses - ldn_access_total_read_write(shpnt) | |
2294 | - ldn_access_total_modeselect(shpnt) | |
2295 | - ldn_access_total_inquiry(shpnt)); | |
2296 | len += sprintf(buffer + len, " Total SCSI command fails.: %d\n\n", IBM_DS(shpnt).total_errors); | |
1da177e4 LT |
2297 | len += sprintf(buffer + len, " Logical-Device-Number (LDN) Access-Statistics:\n"); |
2298 | len += sprintf(buffer + len, " LDN | Accesses [%%] | READ | WRITE | ASSIGNMENTS\n"); | |
2299 | len += sprintf(buffer + len, " -----|--------------|-----------|-----------|--------------\n"); | |
2300 | for (i = 0; i <= MAX_LOG_DEV; i++) | |
67b2009a | 2301 | 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]); |
1da177e4 LT |
2302 | len += sprintf(buffer + len, " -----------------------------------------------------------\n\n"); |
2303 | len += sprintf(buffer + len, " Dynamical-LDN-Assignment-Statistics:\n"); | |
67b2009a JB |
2304 | len += sprintf(buffer + len, " Number of physical SCSI-devices..: %d (+ Adapter)\n", IBM_DS(shpnt).total_scsi_devices); |
2305 | len += sprintf(buffer + len, " Dynamical Assignment necessary...: %s\n", IBM_DS(shpnt).dyn_flag ? "Yes" : "No "); | |
2306 | len += sprintf(buffer + len, " Next LDN to be assigned..........: 0x%x\n", next_ldn(shpnt)); | |
2307 | len += sprintf(buffer + len, " Dynamical assignments done yet...: %d\n", IBM_DS(shpnt).dynamical_assignments); | |
1da177e4 LT |
2308 | len += sprintf(buffer + len, "\n Current SCSI-Device-Mapping:\n"); |
2309 | len += sprintf(buffer + len, " Physical SCSI-Device Map Logical SCSI-Device Map\n"); | |
2310 | 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"); | |
2311 | for (id = 0; id < max_pun; id++) { | |
2312 | len += sprintf(buffer + len, " %2d ", id); | |
2313 | for (lun = 0; lun < 8; lun++) | |
67b2009a | 2314 | len += sprintf(buffer + len, "%2s ", ti_p(get_scsi(shpnt)[id][lun])); |
1da177e4 LT |
2315 | len += sprintf(buffer + len, " %2d ", id); |
2316 | for (lun = 0; lun < 8; lun++) | |
67b2009a | 2317 | len += sprintf(buffer + len, "%2s ", ti_l(get_ldn(shpnt)[id][lun])); |
1da177e4 LT |
2318 | len += sprintf(buffer + len, "\n"); |
2319 | } | |
2320 | ||
2321 | len += sprintf(buffer + len, "(A = IBM-Subsystem, D = Harddisk, T = Tapedrive, P = Processor, W = WORM,\n"); | |
2322 | len += sprintf(buffer + len, " R = CD-ROM, S = Scanner, M = MO-Drive, C = Medium-Changer, + = unprovided LUN,\n"); | |
2323 | len += sprintf(buffer + len, " - = nothing found, nothing assigned or unprobed LUN)\n\n"); | |
2324 | ||
2325 | *start = buffer + offset; | |
2326 | len -= offset; | |
2327 | if (len > length) | |
2328 | len = length; | |
2329 | spin_unlock_irqrestore(shpnt->host_lock, flags); | |
2330 | return len; | |
2331 | } | |
2332 | ||
2333 | static int option_setup(char *str) | |
2334 | { | |
2335 | int ints[IM_MAX_HOSTS]; | |
2336 | char *cur = str; | |
2337 | int i = 1; | |
2338 | ||
2339 | while (cur && isdigit(*cur) && i <= IM_MAX_HOSTS) { | |
2340 | ints[i++] = simple_strtoul(cur, NULL, 0); | |
2341 | if ((cur = strchr(cur, ',')) != NULL) | |
2342 | cur++; | |
2343 | } | |
2344 | ints[0] = i - 1; | |
2345 | internal_ibmmca_scsi_setup(cur, ints); | |
9b41046c | 2346 | return 1; |
1da177e4 LT |
2347 | } |
2348 | ||
2349 | __setup("ibmmcascsi=", option_setup); | |
2350 | ||
67b2009a JB |
2351 | static struct mca_driver ibmmca_driver = { |
2352 | .id_table = ibmmca_id_table, | |
2353 | .driver = { | |
2354 | .name = "ibmmca", | |
2355 | .bus = &mca_bus_type, | |
2356 | .probe = ibmmca_probe, | |
2357 | .remove = __devexit_p(ibmmca_remove), | |
2358 | }, | |
1da177e4 | 2359 | }; |
67b2009a JB |
2360 | |
2361 | static int __init ibmmca_init(void) | |
2362 | { | |
2363 | #ifdef MODULE | |
2364 | /* If the driver is run as module, read from conf.modules or cmd-line */ | |
2365 | if (boot_options) | |
2366 | option_setup(boot_options); | |
2367 | #endif | |
2368 | ||
2369 | return mca_register_driver_integrated(&ibmmca_driver, MCA_INTEGSCSI); | |
2370 | } | |
2371 | ||
2372 | static void __exit ibmmca_exit(void) | |
2373 | { | |
2374 | mca_unregister_driver(&ibmmca_driver); | |
2375 | } | |
2376 | ||
2377 | module_init(ibmmca_init); | |
2378 | module_exit(ibmmca_exit); |