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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 | ||
13 | Alan Cox <alan@redhat.com> | |
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 | ||
463 | #if 0 /* FIXME: No longer exist? --RR */ | |
464 | MODULE_PARM(display, "1i"); | |
465 | MODULE_PARM(adisplay, "1i"); | |
466 | MODULE_PARM(normal, "1i"); | |
467 | MODULE_PARM(ansi, "1i"); | |
468 | #endif | |
d39a942c RD |
469 | |
470 | MODULE_LICENSE("GPL"); | |
1da177e4 LT |
471 | #endif |
472 | /*counter of concurrent disk read/writes, to turn on/off disk led */ | |
473 | static int disk_rw_in_progress = 0; | |
474 | ||
1da177e4 LT |
475 | static unsigned int pos[8]; /* whole pos register-line for diagnosis */ |
476 | /* Taking into account the additions, made by ZP Gu. | |
477 | * This selects now the preset value from the configfile and | |
478 | * offers the 'normal' commandline option to be accepted */ | |
479 | #ifdef CONFIG_IBMMCA_SCSI_ORDER_STANDARD | |
480 | static char ibm_ansi_order = 1; | |
481 | #else | |
482 | static char ibm_ansi_order = 0; | |
483 | #endif | |
484 | ||
67b2009a | 485 | static void issue_cmd(struct Scsi_Host *, unsigned long, unsigned char); |
1da177e4 | 486 | static void internal_done(Scsi_Cmnd * cmd); |
67b2009a JB |
487 | static void check_devices(struct Scsi_Host *, int); |
488 | static int immediate_assign(struct Scsi_Host *, unsigned int, unsigned int, unsigned int, unsigned int); | |
489 | static int immediate_feature(struct Scsi_Host *, unsigned int, unsigned int); | |
1da177e4 | 490 | #ifdef CONFIG_IBMMCA_SCSI_DEV_RESET |
67b2009a | 491 | static int immediate_reset(struct Scsi_Host *, unsigned int); |
1da177e4 | 492 | #endif |
67b2009a JB |
493 | static int device_inquiry(struct Scsi_Host *, int); |
494 | static int read_capacity(struct Scsi_Host *, int); | |
495 | static int get_pos_info(struct Scsi_Host *); | |
1da177e4 LT |
496 | static char *ti_p(int); |
497 | static char *ti_l(int); | |
498 | static char *ibmrate(unsigned int, int); | |
499 | static int probe_display(int); | |
67b2009a JB |
500 | static int probe_bus_mode(struct Scsi_Host *); |
501 | static int device_exists(struct Scsi_Host *, int, int *, int *); | |
1da177e4 LT |
502 | static int option_setup(char *); |
503 | /* local functions needed for proc_info */ | |
67b2009a JB |
504 | static int ldn_access_load(struct Scsi_Host *, int); |
505 | static int ldn_access_total_read_write(struct Scsi_Host *); | |
1da177e4 | 506 | |
7d12e780 | 507 | static irqreturn_t interrupt_handler(int irq, void *dev_id) |
1da177e4 | 508 | { |
1da177e4 LT |
509 | unsigned int intr_reg; |
510 | unsigned int cmd_result; | |
511 | unsigned int ldn; | |
67b2009a | 512 | unsigned long flags; |
1da177e4 LT |
513 | Scsi_Cmnd *cmd; |
514 | int lastSCSI; | |
67b2009a JB |
515 | struct device *dev = dev_id; |
516 | struct Scsi_Host *shpnt = dev_get_drvdata(dev); | |
1da177e4 | 517 | |
67b2009a JB |
518 | spin_lock_irqsave(shpnt->host_lock, flags); |
519 | ||
520 | if(!(inb(IM_STAT_REG(shpnt)) & IM_INTR_REQUEST)) { | |
521 | spin_unlock_irqrestore(shpnt->host_lock, flags); | |
1da177e4 LT |
522 | return IRQ_NONE; |
523 | } | |
524 | ||
525 | /* the reset-function already did all the job, even ints got | |
526 | renabled on the subsystem, so just return */ | |
67b2009a JB |
527 | if ((reset_status(shpnt) == IM_RESET_NOT_IN_PROGRESS_NO_INT) || (reset_status(shpnt) == IM_RESET_FINISHED_OK_NO_INT)) { |
528 | reset_status(shpnt) = IM_RESET_NOT_IN_PROGRESS; | |
529 | spin_unlock_irqrestore(shpnt->host_lock, flags); | |
1da177e4 LT |
530 | return IRQ_HANDLED; |
531 | } | |
532 | ||
533 | /*must wait for attention reg not busy, then send EOI to subsystem */ | |
534 | while (1) { | |
67b2009a | 535 | if (!(inb(IM_STAT_REG(shpnt)) & IM_BUSY)) |
1da177e4 LT |
536 | break; |
537 | cpu_relax(); | |
538 | } | |
67b2009a | 539 | |
1da177e4 | 540 | /*get command result and logical device */ |
67b2009a | 541 | intr_reg = (unsigned char) (inb(IM_INTR_REG(shpnt))); |
1da177e4 LT |
542 | cmd_result = intr_reg & 0xf0; |
543 | ldn = intr_reg & 0x0f; | |
544 | /* get the last_scsi_command here */ | |
67b2009a JB |
545 | lastSCSI = last_scsi_command(shpnt)[ldn]; |
546 | outb(IM_EOI | ldn, IM_ATTN_REG(shpnt)); | |
1da177e4 LT |
547 | |
548 | /*these should never happen (hw fails, or a local programming bug) */ | |
549 | if (!global_command_error_excuse) { | |
550 | switch (cmd_result) { | |
551 | /* Prevent from Ooopsing on error to show the real reason */ | |
552 | case IM_ADAPTER_HW_FAILURE: | |
553 | case IM_SOFTWARE_SEQUENCING_ERROR: | |
554 | case IM_CMD_ERROR: | |
555 | printk(KERN_ERR "IBM MCA SCSI: Fatal Subsystem ERROR!\n"); | |
67b2009a JB |
556 | printk(KERN_ERR " Last cmd=0x%x, ena=%x, len=", lastSCSI, ld(shpnt)[ldn].scb.enable); |
557 | if (ld(shpnt)[ldn].cmd) | |
5f60ef6a | 558 | printk("%ld/%ld,", (long) (scsi_bufflen(ld(shpnt)[ldn].cmd)), (long) (ld(shpnt)[ldn].scb.sys_buf_length)); |
1da177e4 LT |
559 | else |
560 | printk("none,"); | |
67b2009a JB |
561 | if (ld(shpnt)[ldn].cmd) |
562 | printk("Blocksize=%d", ld(shpnt)[ldn].scb.u2.blk.length); | |
1da177e4 LT |
563 | else |
564 | printk("Blocksize=none"); | |
67b2009a JB |
565 | printk(", host=%p, ldn=0x%x\n", shpnt, ldn); |
566 | if (ld(shpnt)[ldn].cmd) { | |
567 | printk(KERN_ERR "Blockcount=%d/%d\n", last_scsi_blockcount(shpnt)[ldn], ld(shpnt)[ldn].scb.u2.blk.count); | |
568 | printk(KERN_ERR "Logical block=%lx/%lx\n", last_scsi_logical_block(shpnt)[ldn], ld(shpnt)[ldn].scb.u1.log_blk_adr); | |
1da177e4 LT |
569 | } |
570 | 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"); | |
571 | /* if errors appear, enter this section to give detailed info */ | |
572 | printk(KERN_ERR "IBM MCA SCSI: Subsystem Error-Status follows:\n"); | |
67b2009a JB |
573 | printk(KERN_ERR " Command Type................: %x\n", last_scsi_type(shpnt)[ldn]); |
574 | printk(KERN_ERR " Attention Register..........: %x\n", inb(IM_ATTN_REG(shpnt))); | |
575 | printk(KERN_ERR " Basic Control Register......: %x\n", inb(IM_CTR_REG(shpnt))); | |
1da177e4 | 576 | printk(KERN_ERR " Interrupt Status Register...: %x\n", intr_reg); |
67b2009a JB |
577 | printk(KERN_ERR " Basic Status Register.......: %x\n", inb(IM_STAT_REG(shpnt))); |
578 | if ((last_scsi_type(shpnt)[ldn] == IM_SCB) || (last_scsi_type(shpnt)[ldn] == IM_LONG_SCB)) { | |
579 | printk(KERN_ERR " SCB-Command.................: %x\n", ld(shpnt)[ldn].scb.command); | |
580 | printk(KERN_ERR " SCB-Enable..................: %x\n", ld(shpnt)[ldn].scb.enable); | |
581 | printk(KERN_ERR " SCB-logical block address...: %lx\n", ld(shpnt)[ldn].scb.u1.log_blk_adr); | |
582 | printk(KERN_ERR " SCB-system buffer address...: %lx\n", ld(shpnt)[ldn].scb.sys_buf_adr); | |
583 | printk(KERN_ERR " SCB-system buffer length....: %lx\n", ld(shpnt)[ldn].scb.sys_buf_length); | |
584 | printk(KERN_ERR " SCB-tsb address.............: %lx\n", ld(shpnt)[ldn].scb.tsb_adr); | |
585 | printk(KERN_ERR " SCB-Chain address...........: %lx\n", ld(shpnt)[ldn].scb.scb_chain_adr); | |
586 | printk(KERN_ERR " SCB-block count.............: %x\n", ld(shpnt)[ldn].scb.u2.blk.count); | |
587 | printk(KERN_ERR " SCB-block length............: %x\n", ld(shpnt)[ldn].scb.u2.blk.length); | |
1da177e4 LT |
588 | } |
589 | printk(KERN_ERR " Send this report to the maintainer.\n"); | |
590 | panic("IBM MCA SCSI: Fatal error message from the subsystem (0x%X,0x%X)!\n", lastSCSI, cmd_result); | |
591 | break; | |
592 | } | |
593 | } else { | |
594 | /* The command error handling is made silent, but we tell the | |
595 | * calling function, that there is a reported error from the | |
596 | * adapter. */ | |
597 | switch (cmd_result) { | |
598 | case IM_ADAPTER_HW_FAILURE: | |
599 | case IM_SOFTWARE_SEQUENCING_ERROR: | |
600 | case IM_CMD_ERROR: | |
601 | global_command_error_excuse = CMD_FAIL; | |
602 | break; | |
603 | default: | |
604 | global_command_error_excuse = 0; | |
605 | break; | |
606 | } | |
607 | } | |
608 | /* if no panic appeared, increase the interrupt-counter */ | |
67b2009a | 609 | IBM_DS(shpnt).total_interrupts++; |
1da177e4 | 610 | /*only for local checking phase */ |
67b2009a JB |
611 | if (local_checking_phase_flag(shpnt)) { |
612 | stat_result(shpnt) = cmd_result; | |
613 | got_interrupt(shpnt) = 1; | |
614 | reset_status(shpnt) = IM_RESET_FINISHED_OK; | |
615 | last_scsi_command(shpnt)[ldn] = NO_SCSI; | |
616 | spin_unlock_irqrestore(shpnt->host_lock, flags); | |
1da177e4 LT |
617 | return IRQ_HANDLED; |
618 | } | |
619 | /* handling of commands coming from upper level of scsi driver */ | |
67b2009a | 620 | if (last_scsi_type(shpnt)[ldn] == IM_IMM_CMD) { |
1da177e4 | 621 | /* verify ldn, and may handle rare reset immediate command */ |
67b2009a | 622 | if ((reset_status(shpnt) == IM_RESET_IN_PROGRESS) && (last_scsi_command(shpnt)[ldn] == IM_RESET_IMM_CMD)) { |
1da177e4 LT |
623 | if (cmd_result == IM_CMD_COMPLETED_WITH_FAILURE) { |
624 | disk_rw_in_progress = 0; | |
625 | PS2_DISK_LED_OFF(); | |
67b2009a | 626 | reset_status(shpnt) = IM_RESET_FINISHED_FAIL; |
1da177e4 LT |
627 | } else { |
628 | /*reset disk led counter, turn off disk led */ | |
629 | disk_rw_in_progress = 0; | |
630 | PS2_DISK_LED_OFF(); | |
67b2009a | 631 | reset_status(shpnt) = IM_RESET_FINISHED_OK; |
1da177e4 | 632 | } |
67b2009a JB |
633 | stat_result(shpnt) = cmd_result; |
634 | last_scsi_command(shpnt)[ldn] = NO_SCSI; | |
635 | last_scsi_type(shpnt)[ldn] = 0; | |
636 | spin_unlock_irqrestore(shpnt->host_lock, flags); | |
1da177e4 | 637 | return IRQ_HANDLED; |
67b2009a | 638 | } else if (last_scsi_command(shpnt)[ldn] == IM_ABORT_IMM_CMD) { |
1da177e4 LT |
639 | /* react on SCSI abort command */ |
640 | #ifdef IM_DEBUG_PROBE | |
641 | printk("IBM MCA SCSI: Interrupt from SCSI-abort.\n"); | |
642 | #endif | |
643 | disk_rw_in_progress = 0; | |
644 | PS2_DISK_LED_OFF(); | |
67b2009a JB |
645 | cmd = ld(shpnt)[ldn].cmd; |
646 | ld(shpnt)[ldn].cmd = NULL; | |
1da177e4 LT |
647 | if (cmd_result == IM_CMD_COMPLETED_WITH_FAILURE) |
648 | cmd->result = DID_NO_CONNECT << 16; | |
649 | else | |
650 | cmd->result = DID_ABORT << 16; | |
67b2009a JB |
651 | stat_result(shpnt) = cmd_result; |
652 | last_scsi_command(shpnt)[ldn] = NO_SCSI; | |
653 | last_scsi_type(shpnt)[ldn] = 0; | |
1da177e4 LT |
654 | if (cmd->scsi_done) |
655 | (cmd->scsi_done) (cmd); /* should be the internal_done */ | |
67b2009a | 656 | spin_unlock_irqrestore(shpnt->host_lock, flags); |
1da177e4 LT |
657 | return IRQ_HANDLED; |
658 | } else { | |
659 | disk_rw_in_progress = 0; | |
660 | PS2_DISK_LED_OFF(); | |
67b2009a JB |
661 | reset_status(shpnt) = IM_RESET_FINISHED_OK; |
662 | stat_result(shpnt) = cmd_result; | |
663 | last_scsi_command(shpnt)[ldn] = NO_SCSI; | |
664 | spin_unlock_irqrestore(shpnt->host_lock, flags); | |
1da177e4 LT |
665 | return IRQ_HANDLED; |
666 | } | |
667 | } | |
67b2009a JB |
668 | last_scsi_command(shpnt)[ldn] = NO_SCSI; |
669 | last_scsi_type(shpnt)[ldn] = 0; | |
670 | cmd = ld(shpnt)[ldn].cmd; | |
671 | ld(shpnt)[ldn].cmd = NULL; | |
1da177e4 LT |
672 | #ifdef IM_DEBUG_TIMEOUT |
673 | if (cmd) { | |
674 | if ((cmd->target == TIMEOUT_PUN) && (cmd->device->lun == TIMEOUT_LUN)) { | |
67b2009a | 675 | spin_unlock_irqsave(shpnt->host_lock, flags); |
1da177e4 LT |
676 | printk("IBM MCA SCSI: Ignoring interrupt from pun=%x, lun=%x.\n", cmd->target, cmd->device->lun); |
677 | return IRQ_HANDLED; | |
678 | } | |
679 | } | |
680 | #endif | |
681 | /*if no command structure, just return, else clear cmd */ | |
682 | if (!cmd) | |
683 | { | |
67b2009a | 684 | spin_unlock_irqrestore(shpnt->host_lock, flags); |
1da177e4 LT |
685 | return IRQ_HANDLED; |
686 | } | |
687 | ||
688 | #ifdef IM_DEBUG_INT | |
67b2009a | 689 | 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 |
690 | #endif |
691 | /*if this is end of media read/write, may turn off PS/2 disk led */ | |
67b2009a | 692 | if ((ld(shpnt)[ldn].device_type != TYPE_NO_LUN) && (ld(shpnt)[ldn].device_type != TYPE_NO_DEVICE)) { |
1da177e4 LT |
693 | /* only access this, if there was a valid device addressed */ |
694 | if (--disk_rw_in_progress == 0) | |
695 | PS2_DISK_LED_OFF(); | |
696 | } | |
697 | ||
698 | /* IBM describes the status-mask to be 0x1e, but this is not conform | |
699 | * with SCSI-definition, I suppose, the reason for it is that IBM | |
700 | * adapters do not support CMD_TERMINATED, TASK_SET_FULL and | |
701 | * ACA_ACTIVE as returning statusbyte information. (ML) */ | |
702 | if (cmd_result == IM_CMD_COMPLETED_WITH_FAILURE) { | |
67b2009a JB |
703 | cmd->result = (unsigned char) (ld(shpnt)[ldn].tsb.dev_status & 0x1e); |
704 | IBM_DS(shpnt).total_errors++; | |
1da177e4 LT |
705 | } else |
706 | cmd->result = 0; | |
707 | /* write device status into cmd->result, and call done function */ | |
708 | if (lastSCSI == NO_SCSI) { /* unexpected interrupt :-( */ | |
709 | cmd->result |= DID_BAD_INTR << 16; | |
710 | printk("IBM MCA SCSI: WARNING - Interrupt from non-pending SCSI-command!\n"); | |
711 | } else /* things went right :-) */ | |
712 | cmd->result |= DID_OK << 16; | |
713 | if (cmd->scsi_done) | |
714 | (cmd->scsi_done) (cmd); | |
67b2009a | 715 | spin_unlock_irqrestore(shpnt->host_lock, flags); |
1da177e4 LT |
716 | return IRQ_HANDLED; |
717 | } | |
718 | ||
67b2009a JB |
719 | static void issue_cmd(struct Scsi_Host *shpnt, unsigned long cmd_reg, |
720 | unsigned char attn_reg) | |
1da177e4 LT |
721 | { |
722 | unsigned long flags; | |
723 | /* must wait for attention reg not busy */ | |
724 | while (1) { | |
67b2009a JB |
725 | spin_lock_irqsave(shpnt->host_lock, flags); |
726 | if (!(inb(IM_STAT_REG(shpnt)) & IM_BUSY)) | |
1da177e4 | 727 | break; |
67b2009a | 728 | spin_unlock_irqrestore(shpnt->host_lock, flags); |
1da177e4 LT |
729 | } |
730 | /* write registers and enable system interrupts */ | |
67b2009a JB |
731 | outl(cmd_reg, IM_CMD_REG(shpnt)); |
732 | outb(attn_reg, IM_ATTN_REG(shpnt)); | |
733 | spin_unlock_irqrestore(shpnt->host_lock, flags); | |
1da177e4 LT |
734 | } |
735 | ||
736 | static void internal_done(Scsi_Cmnd * cmd) | |
737 | { | |
738 | cmd->SCp.Status++; | |
739 | return; | |
740 | } | |
741 | ||
742 | /* SCSI-SCB-command for device_inquiry */ | |
67b2009a | 743 | static int device_inquiry(struct Scsi_Host *shpnt, int ldn) |
1da177e4 LT |
744 | { |
745 | int retr; | |
746 | struct im_scb *scb; | |
747 | struct im_tsb *tsb; | |
748 | unsigned char *buf; | |
749 | ||
67b2009a JB |
750 | scb = &(ld(shpnt)[ldn].scb); |
751 | tsb = &(ld(shpnt)[ldn].tsb); | |
752 | buf = (unsigned char *) (&(ld(shpnt)[ldn].buf)); | |
753 | ld(shpnt)[ldn].tsb.dev_status = 0; /* prepare statusblock */ | |
1da177e4 LT |
754 | for (retr = 0; retr < 3; retr++) { |
755 | /* fill scb with inquiry command */ | |
756 | scb->command = IM_DEVICE_INQUIRY_CMD | IM_NO_DISCONNECT; | |
757 | scb->enable = IM_REPORT_TSB_ONLY_ON_ERROR | IM_READ_CONTROL | IM_SUPRESS_EXCEPTION_SHORT | IM_RETRY_ENABLE | IM_BYPASS_BUFFER; | |
67b2009a JB |
758 | last_scsi_command(shpnt)[ldn] = IM_DEVICE_INQUIRY_CMD; |
759 | last_scsi_type(shpnt)[ldn] = IM_SCB; | |
1da177e4 LT |
760 | scb->sys_buf_adr = isa_virt_to_bus(buf); |
761 | scb->sys_buf_length = 255; /* maximum bufferlength gives max info */ | |
762 | scb->tsb_adr = isa_virt_to_bus(tsb); | |
763 | /* issue scb to passed ldn, and busy wait for interrupt */ | |
67b2009a JB |
764 | got_interrupt(shpnt) = 0; |
765 | issue_cmd(shpnt, isa_virt_to_bus(scb), IM_SCB | ldn); | |
766 | while (!got_interrupt(shpnt)) | |
1da177e4 LT |
767 | barrier(); |
768 | ||
d6e05edc | 769 | /*if command successful, break */ |
67b2009a | 770 | if ((stat_result(shpnt) == IM_SCB_CMD_COMPLETED) || (stat_result(shpnt) == IM_SCB_CMD_COMPLETED_WITH_RETRIES)) |
1da177e4 LT |
771 | return 1; |
772 | } | |
773 | /*if all three retries failed, return "no device at this ldn" */ | |
774 | if (retr >= 3) | |
775 | return 0; | |
776 | else | |
777 | return 1; | |
778 | } | |
779 | ||
67b2009a | 780 | static int read_capacity(struct Scsi_Host *shpnt, int ldn) |
1da177e4 LT |
781 | { |
782 | int retr; | |
783 | struct im_scb *scb; | |
784 | struct im_tsb *tsb; | |
785 | unsigned char *buf; | |
786 | ||
67b2009a JB |
787 | scb = &(ld(shpnt)[ldn].scb); |
788 | tsb = &(ld(shpnt)[ldn].tsb); | |
789 | buf = (unsigned char *) (&(ld(shpnt)[ldn].buf)); | |
790 | ld(shpnt)[ldn].tsb.dev_status = 0; | |
1da177e4 LT |
791 | for (retr = 0; retr < 3; retr++) { |
792 | /*fill scb with read capacity command */ | |
793 | scb->command = IM_READ_CAPACITY_CMD; | |
794 | scb->enable = IM_REPORT_TSB_ONLY_ON_ERROR | IM_READ_CONTROL | IM_RETRY_ENABLE | IM_BYPASS_BUFFER; | |
67b2009a JB |
795 | last_scsi_command(shpnt)[ldn] = IM_READ_CAPACITY_CMD; |
796 | last_scsi_type(shpnt)[ldn] = IM_SCB; | |
1da177e4 LT |
797 | scb->sys_buf_adr = isa_virt_to_bus(buf); |
798 | scb->sys_buf_length = 8; | |
799 | scb->tsb_adr = isa_virt_to_bus(tsb); | |
800 | /*issue scb to passed ldn, and busy wait for interrupt */ | |
67b2009a JB |
801 | got_interrupt(shpnt) = 0; |
802 | issue_cmd(shpnt, isa_virt_to_bus(scb), IM_SCB | ldn); | |
803 | while (!got_interrupt(shpnt)) | |
1da177e4 LT |
804 | barrier(); |
805 | ||
806 | /*if got capacity, get block length and return one device found */ | |
67b2009a | 807 | if ((stat_result(shpnt) == IM_SCB_CMD_COMPLETED) || (stat_result(shpnt) == IM_SCB_CMD_COMPLETED_WITH_RETRIES)) |
1da177e4 LT |
808 | return 1; |
809 | } | |
810 | /*if all three retries failed, return "no device at this ldn" */ | |
811 | if (retr >= 3) | |
812 | return 0; | |
813 | else | |
814 | return 1; | |
815 | } | |
816 | ||
67b2009a | 817 | static int get_pos_info(struct Scsi_Host *shpnt) |
1da177e4 LT |
818 | { |
819 | int retr; | |
820 | struct im_scb *scb; | |
821 | struct im_tsb *tsb; | |
822 | unsigned char *buf; | |
823 | ||
67b2009a JB |
824 | scb = &(ld(shpnt)[MAX_LOG_DEV].scb); |
825 | tsb = &(ld(shpnt)[MAX_LOG_DEV].tsb); | |
826 | buf = (unsigned char *) (&(ld(shpnt)[MAX_LOG_DEV].buf)); | |
827 | ld(shpnt)[MAX_LOG_DEV].tsb.dev_status = 0; | |
1da177e4 LT |
828 | for (retr = 0; retr < 3; retr++) { |
829 | /*fill scb with get_pos_info command */ | |
830 | scb->command = IM_GET_POS_INFO_CMD; | |
831 | scb->enable = IM_READ_CONTROL | IM_REPORT_TSB_ONLY_ON_ERROR | IM_RETRY_ENABLE | IM_BYPASS_BUFFER; | |
67b2009a JB |
832 | last_scsi_command(shpnt)[MAX_LOG_DEV] = IM_GET_POS_INFO_CMD; |
833 | last_scsi_type(shpnt)[MAX_LOG_DEV] = IM_SCB; | |
1da177e4 | 834 | scb->sys_buf_adr = isa_virt_to_bus(buf); |
67b2009a | 835 | if (special(shpnt) == IBM_SCSI2_FW) |
1da177e4 LT |
836 | scb->sys_buf_length = 256; /* get all info from F/W adapter */ |
837 | else | |
838 | scb->sys_buf_length = 18; /* get exactly 18 bytes for other SCSI */ | |
839 | scb->tsb_adr = isa_virt_to_bus(tsb); | |
840 | /*issue scb to ldn=15, and busy wait for interrupt */ | |
67b2009a JB |
841 | got_interrupt(shpnt) = 0; |
842 | issue_cmd(shpnt, isa_virt_to_bus(scb), IM_SCB | MAX_LOG_DEV); | |
1da177e4 LT |
843 | |
844 | /* FIXME: timeout */ | |
67b2009a | 845 | while (!got_interrupt(shpnt)) |
1da177e4 LT |
846 | barrier(); |
847 | ||
848 | /*if got POS-stuff, get block length and return one device found */ | |
67b2009a | 849 | if ((stat_result(shpnt) == IM_SCB_CMD_COMPLETED) || (stat_result(shpnt) == IM_SCB_CMD_COMPLETED_WITH_RETRIES)) |
1da177e4 LT |
850 | return 1; |
851 | } | |
852 | /* if all three retries failed, return "no device at this ldn" */ | |
853 | if (retr >= 3) | |
854 | return 0; | |
855 | else | |
856 | return 1; | |
857 | } | |
858 | ||
859 | /* SCSI-immediate-command for assign. This functions maps/unmaps specific | |
860 | ldn-numbers on SCSI (PUN,LUN). It is needed for presetting of the | |
861 | subsystem and for dynamical remapping od ldns. */ | |
67b2009a JB |
862 | static int immediate_assign(struct Scsi_Host *shpnt, unsigned int pun, |
863 | unsigned int lun, unsigned int ldn, | |
864 | unsigned int operation) | |
1da177e4 LT |
865 | { |
866 | int retr; | |
867 | unsigned long imm_cmd; | |
868 | ||
869 | for (retr = 0; retr < 3; retr++) { | |
870 | /* select mutation level of the SCSI-adapter */ | |
67b2009a | 871 | switch (special(shpnt)) { |
1da177e4 LT |
872 | case IBM_SCSI2_FW: |
873 | imm_cmd = (unsigned long) (IM_ASSIGN_IMM_CMD); | |
874 | imm_cmd |= (unsigned long) ((lun & 7) << 24); | |
875 | imm_cmd |= (unsigned long) ((operation & 1) << 23); | |
876 | imm_cmd |= (unsigned long) ((pun & 7) << 20) | ((pun & 8) << 24); | |
877 | imm_cmd |= (unsigned long) ((ldn & 15) << 16); | |
878 | break; | |
879 | default: | |
67b2009a | 880 | imm_cmd = inl(IM_CMD_REG(shpnt)); |
1da177e4 LT |
881 | imm_cmd &= (unsigned long) (0xF8000000); /* keep reserved bits */ |
882 | imm_cmd |= (unsigned long) (IM_ASSIGN_IMM_CMD); | |
883 | imm_cmd |= (unsigned long) ((lun & 7) << 24); | |
884 | imm_cmd |= (unsigned long) ((operation & 1) << 23); | |
885 | imm_cmd |= (unsigned long) ((pun & 7) << 20); | |
886 | imm_cmd |= (unsigned long) ((ldn & 15) << 16); | |
887 | break; | |
888 | } | |
67b2009a JB |
889 | last_scsi_command(shpnt)[MAX_LOG_DEV] = IM_ASSIGN_IMM_CMD; |
890 | last_scsi_type(shpnt)[MAX_LOG_DEV] = IM_IMM_CMD; | |
891 | got_interrupt(shpnt) = 0; | |
892 | issue_cmd(shpnt, (unsigned long) (imm_cmd), IM_IMM_CMD | MAX_LOG_DEV); | |
893 | while (!got_interrupt(shpnt)) | |
1da177e4 LT |
894 | barrier(); |
895 | ||
d6e05edc | 896 | /*if command successful, break */ |
67b2009a | 897 | if (stat_result(shpnt) == IM_IMMEDIATE_CMD_COMPLETED) |
1da177e4 LT |
898 | return 1; |
899 | } | |
900 | if (retr >= 3) | |
901 | return 0; | |
902 | else | |
903 | return 1; | |
904 | } | |
905 | ||
67b2009a | 906 | static int immediate_feature(struct Scsi_Host *shpnt, unsigned int speed, unsigned int timeout) |
1da177e4 LT |
907 | { |
908 | int retr; | |
909 | unsigned long imm_cmd; | |
910 | ||
911 | for (retr = 0; retr < 3; retr++) { | |
912 | /* select mutation level of the SCSI-adapter */ | |
913 | imm_cmd = IM_FEATURE_CTR_IMM_CMD; | |
914 | imm_cmd |= (unsigned long) ((speed & 0x7) << 29); | |
915 | imm_cmd |= (unsigned long) ((timeout & 0x1fff) << 16); | |
67b2009a JB |
916 | last_scsi_command(shpnt)[MAX_LOG_DEV] = IM_FEATURE_CTR_IMM_CMD; |
917 | last_scsi_type(shpnt)[MAX_LOG_DEV] = IM_IMM_CMD; | |
918 | got_interrupt(shpnt) = 0; | |
1da177e4 LT |
919 | /* we need to run into command errors in order to probe for the |
920 | * right speed! */ | |
921 | global_command_error_excuse = 1; | |
67b2009a | 922 | issue_cmd(shpnt, (unsigned long) (imm_cmd), IM_IMM_CMD | MAX_LOG_DEV); |
1da177e4 LT |
923 | |
924 | /* FIXME: timeout */ | |
67b2009a | 925 | while (!got_interrupt(shpnt)) |
1da177e4 LT |
926 | barrier(); |
927 | if (global_command_error_excuse == CMD_FAIL) { | |
928 | global_command_error_excuse = 0; | |
929 | return 2; | |
930 | } else | |
931 | global_command_error_excuse = 0; | |
d6e05edc | 932 | /*if command successful, break */ |
67b2009a | 933 | if (stat_result(shpnt) == IM_IMMEDIATE_CMD_COMPLETED) |
1da177e4 LT |
934 | return 1; |
935 | } | |
936 | if (retr >= 3) | |
937 | return 0; | |
938 | else | |
939 | return 1; | |
940 | } | |
941 | ||
942 | #ifdef CONFIG_IBMMCA_SCSI_DEV_RESET | |
67b2009a | 943 | static int immediate_reset(struct Scsi_Host *shpnt, unsigned int ldn) |
1da177e4 LT |
944 | { |
945 | int retries; | |
946 | int ticks; | |
947 | unsigned long imm_command; | |
948 | ||
949 | for (retries = 0; retries < 3; retries++) { | |
67b2009a | 950 | imm_command = inl(IM_CMD_REG(shpnt)); |
1da177e4 LT |
951 | imm_command &= (unsigned long) (0xFFFF0000); /* keep reserved bits */ |
952 | imm_command |= (unsigned long) (IM_RESET_IMM_CMD); | |
67b2009a JB |
953 | last_scsi_command(shpnt)[ldn] = IM_RESET_IMM_CMD; |
954 | last_scsi_type(shpnt)[ldn] = IM_IMM_CMD; | |
955 | got_interrupt(shpnt) = 0; | |
956 | reset_status(shpnt) = IM_RESET_IN_PROGRESS; | |
957 | issue_cmd(shpnt, (unsigned long) (imm_command), IM_IMM_CMD | ldn); | |
1da177e4 | 958 | ticks = IM_RESET_DELAY * HZ; |
67b2009a | 959 | while (reset_status(shpnt) == IM_RESET_IN_PROGRESS && --ticks) { |
1da177e4 LT |
960 | udelay((1 + 999 / HZ) * 1000); |
961 | barrier(); | |
962 | } | |
963 | /* if reset did not complete, just complain */ | |
964 | if (!ticks) { | |
965 | printk(KERN_ERR "IBM MCA SCSI: reset did not complete within %d seconds.\n", IM_RESET_DELAY); | |
67b2009a | 966 | reset_status(shpnt) = IM_RESET_FINISHED_OK; |
1da177e4 LT |
967 | /* did not work, finish */ |
968 | return 1; | |
969 | } | |
d6e05edc | 970 | /*if command successful, break */ |
67b2009a | 971 | if (stat_result(shpnt) == IM_IMMEDIATE_CMD_COMPLETED) |
1da177e4 LT |
972 | return 1; |
973 | } | |
974 | if (retries >= 3) | |
975 | return 0; | |
976 | else | |
977 | return 1; | |
978 | } | |
979 | #endif | |
980 | ||
981 | /* type-interpreter for physical device numbers */ | |
982 | static char *ti_p(int dev) | |
983 | { | |
984 | switch (dev) { | |
985 | case TYPE_IBM_SCSI_ADAPTER: | |
986 | return ("A"); | |
987 | case TYPE_DISK: | |
988 | return ("D"); | |
989 | case TYPE_TAPE: | |
990 | return ("T"); | |
991 | case TYPE_PROCESSOR: | |
992 | return ("P"); | |
993 | case TYPE_WORM: | |
994 | return ("W"); | |
995 | case TYPE_ROM: | |
996 | return ("R"); | |
997 | case TYPE_SCANNER: | |
998 | return ("S"); | |
999 | case TYPE_MOD: | |
1000 | return ("M"); | |
1001 | case TYPE_MEDIUM_CHANGER: | |
1002 | return ("C"); | |
1003 | case TYPE_NO_LUN: | |
1004 | return ("+"); /* show NO_LUN */ | |
1005 | } | |
1006 | return ("-"); /* TYPE_NO_DEVICE and others */ | |
1007 | } | |
1008 | ||
1009 | /* interpreter for logical device numbers (ldn) */ | |
1010 | static char *ti_l(int val) | |
1011 | { | |
1012 | const char hex[16] = "0123456789abcdef"; | |
1013 | static char answer[2]; | |
1014 | ||
1015 | answer[1] = (char) (0x0); | |
1016 | if (val <= MAX_LOG_DEV) | |
1017 | answer[0] = hex[val]; | |
1018 | else | |
1019 | answer[0] = '-'; | |
1020 | return (char *) &answer; | |
1021 | } | |
1022 | ||
1023 | /* transfers bitpattern of the feature command to values in MHz */ | |
1024 | static char *ibmrate(unsigned int speed, int i) | |
1025 | { | |
1026 | switch (speed) { | |
1027 | case 0: | |
1028 | return i ? "5.00" : "10.00"; | |
1029 | case 1: | |
1030 | return i ? "4.00" : "8.00"; | |
1031 | case 2: | |
1032 | return i ? "3.33" : "6.66"; | |
1033 | case 3: | |
1034 | return i ? "2.86" : "5.00"; | |
1035 | case 4: | |
1036 | return i ? "2.50" : "4.00"; | |
1037 | case 5: | |
1038 | return i ? "2.22" : "3.10"; | |
1039 | case 6: | |
1040 | return i ? "2.00" : "2.50"; | |
1041 | case 7: | |
1042 | return i ? "1.82" : "2.00"; | |
1043 | } | |
1044 | return "---"; | |
1045 | } | |
1046 | ||
1047 | static int probe_display(int what) | |
1048 | { | |
1049 | static int rotator = 0; | |
1050 | const char rotor[] = "|/-\\"; | |
1051 | ||
1052 | if (!(display_mode & LED_DISP)) | |
1053 | return 0; | |
1054 | if (!what) { | |
1055 | outl(0x20202020, MOD95_LED_PORT); | |
1056 | outl(0x20202020, MOD95_LED_PORT + 4); | |
1057 | } else { | |
1058 | outb('S', MOD95_LED_PORT + 7); | |
1059 | outb('C', MOD95_LED_PORT + 6); | |
1060 | outb('S', MOD95_LED_PORT + 5); | |
1061 | outb('I', MOD95_LED_PORT + 4); | |
1062 | outb('i', MOD95_LED_PORT + 3); | |
1063 | outb('n', MOD95_LED_PORT + 2); | |
1064 | outb('i', MOD95_LED_PORT + 1); | |
1065 | outb((char) (rotor[rotator]), MOD95_LED_PORT); | |
1066 | rotator++; | |
1067 | if (rotator > 3) | |
1068 | rotator = 0; | |
1069 | } | |
1070 | return 0; | |
1071 | } | |
1072 | ||
67b2009a | 1073 | static int probe_bus_mode(struct Scsi_Host *shpnt) |
1da177e4 LT |
1074 | { |
1075 | struct im_pos_info *info; | |
1076 | int num_bus = 0; | |
1077 | int ldn; | |
1078 | ||
67b2009a JB |
1079 | info = (struct im_pos_info *) (&(ld(shpnt)[MAX_LOG_DEV].buf)); |
1080 | if (get_pos_info(shpnt)) { | |
1da177e4 | 1081 | if (info->connector_size & 0xf000) |
67b2009a | 1082 | subsystem_connector_size(shpnt) = 16; |
1da177e4 | 1083 | else |
67b2009a | 1084 | subsystem_connector_size(shpnt) = 32; |
1da177e4 LT |
1085 | num_bus |= (info->pos_4b & 8) >> 3; |
1086 | for (ldn = 0; ldn <= MAX_LOG_DEV; ldn++) { | |
67b2009a | 1087 | if ((special(shpnt) == IBM_SCSI_WCACHE) || (special(shpnt) == IBM_7568_WCACHE)) { |
1da177e4 | 1088 | if (!((info->cache_stat >> ldn) & 1)) |
67b2009a | 1089 | ld(shpnt)[ldn].cache_flag = 0; |
1da177e4 LT |
1090 | } |
1091 | if (!((info->retry_stat >> ldn) & 1)) | |
67b2009a | 1092 | ld(shpnt)[ldn].retry_flag = 0; |
1da177e4 LT |
1093 | } |
1094 | #ifdef IM_DEBUG_PROBE | |
1095 | printk("IBM MCA SCSI: SCSI-Cache bits: "); | |
1096 | for (ldn = 0; ldn <= MAX_LOG_DEV; ldn++) { | |
67b2009a | 1097 | printk("%d", ld(shpnt)[ldn].cache_flag); |
1da177e4 LT |
1098 | } |
1099 | printk("\nIBM MCA SCSI: SCSI-Retry bits: "); | |
1100 | for (ldn = 0; ldn <= MAX_LOG_DEV; ldn++) { | |
67b2009a | 1101 | printk("%d", ld(shpnt)[ldn].retry_flag); |
1da177e4 LT |
1102 | } |
1103 | printk("\n"); | |
1104 | #endif | |
1105 | } | |
1106 | return num_bus; | |
1107 | } | |
1108 | ||
1109 | /* probing scsi devices */ | |
67b2009a | 1110 | static void check_devices(struct Scsi_Host *shpnt, int adaptertype) |
1da177e4 LT |
1111 | { |
1112 | int id, lun, ldn, ticks; | |
1113 | int count_devices; /* local counter for connected device */ | |
1114 | int max_pun; | |
1115 | int num_bus; | |
1116 | int speedrun; /* local adapter_speed check variable */ | |
1117 | ||
1118 | /* assign default values to certain variables */ | |
1119 | ticks = 0; | |
1120 | count_devices = 0; | |
67b2009a JB |
1121 | IBM_DS(shpnt).dyn_flag = 0; /* normally no need for dynamical ldn management */ |
1122 | IBM_DS(shpnt).total_errors = 0; /* set errorcounter to 0 */ | |
1123 | next_ldn(shpnt) = 7; /* next ldn to be assigned is 7, because 0-6 is 'hardwired' */ | |
1da177e4 LT |
1124 | |
1125 | /* initialize the very important driver-informational arrays/structs */ | |
67b2009a | 1126 | memset(ld(shpnt), 0, sizeof(ld(shpnt))); |
1da177e4 | 1127 | for (ldn = 0; ldn <= MAX_LOG_DEV; ldn++) { |
67b2009a JB |
1128 | last_scsi_command(shpnt)[ldn] = NO_SCSI; /* emptify last SCSI-command storage */ |
1129 | last_scsi_type(shpnt)[ldn] = 0; | |
1130 | ld(shpnt)[ldn].cache_flag = 1; | |
1131 | ld(shpnt)[ldn].retry_flag = 1; | |
1da177e4 | 1132 | } |
67b2009a JB |
1133 | memset(get_ldn(shpnt), TYPE_NO_DEVICE, sizeof(get_ldn(shpnt))); /* this is essential ! */ |
1134 | memset(get_scsi(shpnt), TYPE_NO_DEVICE, sizeof(get_scsi(shpnt))); /* this is essential ! */ | |
1da177e4 LT |
1135 | for (lun = 0; lun < 8; lun++) { |
1136 | /* mark the adapter at its pun on all luns */ | |
67b2009a JB |
1137 | get_scsi(shpnt)[subsystem_pun(shpnt)][lun] = TYPE_IBM_SCSI_ADAPTER; |
1138 | get_ldn(shpnt)[subsystem_pun(shpnt)][lun] = MAX_LOG_DEV; /* make sure, the subsystem | |
1da177e4 LT |
1139 | ldn is active for all |
1140 | luns. */ | |
1141 | } | |
1142 | probe_display(0); /* Supercool display usage during SCSI-probing. */ | |
1143 | /* This makes sense, when booting without any */ | |
1144 | /* monitor connected on model XX95. */ | |
1145 | ||
1146 | /* STEP 1: */ | |
67b2009a JB |
1147 | adapter_speed(shpnt) = global_adapter_speed; |
1148 | speedrun = adapter_speed(shpnt); | |
1149 | while (immediate_feature(shpnt, speedrun, adapter_timeout) == 2) { | |
1da177e4 LT |
1150 | probe_display(1); |
1151 | if (speedrun == 7) | |
1152 | panic("IBM MCA SCSI: Cannot set Synchronous-Transfer-Rate!\n"); | |
1153 | speedrun++; | |
1154 | if (speedrun > 7) | |
1155 | speedrun = 7; | |
1156 | } | |
67b2009a | 1157 | adapter_speed(shpnt) = speedrun; |
1da177e4 LT |
1158 | /* Get detailed information about the current adapter, necessary for |
1159 | * device operations: */ | |
67b2009a | 1160 | num_bus = probe_bus_mode(shpnt); |
1da177e4 LT |
1161 | |
1162 | /* num_bus contains only valid data for the F/W adapter! */ | |
1163 | if (adaptertype == IBM_SCSI2_FW) { /* F/W SCSI adapter: */ | |
1164 | /* F/W adapter PUN-space extension evaluation: */ | |
1165 | if (num_bus) { | |
1166 | printk(KERN_INFO "IBM MCA SCSI: Separate bus mode (wide-addressing enabled)\n"); | |
67b2009a | 1167 | subsystem_maxid(shpnt) = 16; |
1da177e4 LT |
1168 | } else { |
1169 | printk(KERN_INFO "IBM MCA SCSI: Combined bus mode (wide-addressing disabled)\n"); | |
67b2009a | 1170 | subsystem_maxid(shpnt) = 8; |
1da177e4 LT |
1171 | } |
1172 | printk(KERN_INFO "IBM MCA SCSI: Sync.-Rate (F/W: 20, Int.: 10, Ext.: %s) MBytes/s\n", ibmrate(speedrun, adaptertype)); | |
1173 | } else /* all other IBM SCSI adapters: */ | |
1174 | printk(KERN_INFO "IBM MCA SCSI: Synchronous-SCSI-Transfer-Rate: %s MBytes/s\n", ibmrate(speedrun, adaptertype)); | |
1175 | ||
1176 | /* assign correct PUN device space */ | |
67b2009a | 1177 | max_pun = subsystem_maxid(shpnt); |
1da177e4 LT |
1178 | |
1179 | #ifdef IM_DEBUG_PROBE | |
67b2009a | 1180 | printk("IBM MCA SCSI: Current SCSI-host index: %d\n", shpnt); |
1da177e4 LT |
1181 | printk("IBM MCA SCSI: Removing default logical SCSI-device mapping."); |
1182 | #else | |
1183 | printk(KERN_INFO "IBM MCA SCSI: Dev. Order: %s, Mapping (takes <2min): ", (ibm_ansi_order) ? "ANSI" : "New"); | |
1184 | #endif | |
1185 | for (ldn = 0; ldn < MAX_LOG_DEV; ldn++) { | |
1186 | probe_display(1); | |
1187 | #ifdef IM_DEBUG_PROBE | |
1188 | printk("."); | |
1189 | #endif | |
67b2009a | 1190 | immediate_assign(shpnt, 0, 0, ldn, REMOVE_LDN); /* remove ldn (wherever) */ |
1da177e4 LT |
1191 | } |
1192 | lun = 0; /* default lun is 0 */ | |
1193 | #ifndef IM_DEBUG_PROBE | |
1194 | printk("cleared,"); | |
1195 | #endif | |
1196 | /* STEP 2: */ | |
1197 | #ifdef IM_DEBUG_PROBE | |
1198 | printk("\nIBM MCA SCSI: Scanning SCSI-devices."); | |
1199 | #endif | |
1200 | for (id = 0; id < max_pun; id++) | |
1201 | #ifdef CONFIG_SCSI_MULTI_LUN | |
1202 | for (lun = 0; lun < 8; lun++) | |
1203 | #endif | |
1204 | { | |
1205 | probe_display(1); | |
1206 | #ifdef IM_DEBUG_PROBE | |
1207 | printk("."); | |
1208 | #endif | |
67b2009a | 1209 | if (id != subsystem_pun(shpnt)) { |
1da177e4 LT |
1210 | /* if pun is not the adapter: */ |
1211 | /* set ldn=0 to pun,lun */ | |
67b2009a JB |
1212 | immediate_assign(shpnt, id, lun, PROBE_LDN, SET_LDN); |
1213 | if (device_inquiry(shpnt, PROBE_LDN)) { /* probe device */ | |
1214 | get_scsi(shpnt)[id][lun] = (unsigned char) (ld(shpnt)[PROBE_LDN].buf[0]); | |
1da177e4 | 1215 | /* entry, even for NO_LUN */ |
67b2009a | 1216 | if (ld(shpnt)[PROBE_LDN].buf[0] != TYPE_NO_LUN) |
1da177e4 LT |
1217 | count_devices++; /* a existing device is found */ |
1218 | } | |
1219 | /* remove ldn */ | |
67b2009a | 1220 | immediate_assign(shpnt, id, lun, PROBE_LDN, REMOVE_LDN); |
1da177e4 LT |
1221 | } |
1222 | } | |
1223 | #ifndef IM_DEBUG_PROBE | |
1224 | printk("scanned,"); | |
1225 | #endif | |
1226 | /* STEP 3: */ | |
1227 | #ifdef IM_DEBUG_PROBE | |
1228 | printk("\nIBM MCA SCSI: Mapping SCSI-devices."); | |
1229 | #endif | |
1230 | ldn = 0; | |
1231 | lun = 0; | |
1232 | #ifdef CONFIG_SCSI_MULTI_LUN | |
1233 | for (lun = 0; lun < 8 && ldn < MAX_LOG_DEV; lun++) | |
1234 | #endif | |
1235 | for (id = 0; id < max_pun && ldn < MAX_LOG_DEV; id++) { | |
1236 | probe_display(1); | |
1237 | #ifdef IM_DEBUG_PROBE | |
1238 | printk("."); | |
1239 | #endif | |
67b2009a JB |
1240 | if (id != subsystem_pun(shpnt)) { |
1241 | if (get_scsi(shpnt)[id][lun] != TYPE_NO_LUN && get_scsi(shpnt)[id][lun] != TYPE_NO_DEVICE) { | |
1da177e4 LT |
1242 | /* Only map if accepted type. Always enter for |
1243 | lun == 0 to get no gaps into ldn-mapping for ldn<7. */ | |
67b2009a JB |
1244 | immediate_assign(shpnt, id, lun, ldn, SET_LDN); |
1245 | get_ldn(shpnt)[id][lun] = ldn; /* map ldn */ | |
1246 | if (device_exists(shpnt, ldn, &ld(shpnt)[ldn].block_length, &ld(shpnt)[ldn].device_type)) { | |
1da177e4 LT |
1247 | #ifdef CONFIG_IBMMCA_SCSI_DEV_RESET |
1248 | printk("resetting device at ldn=%x ... ", ldn); | |
67b2009a | 1249 | immediate_reset(shpnt, ldn); |
1da177e4 LT |
1250 | #endif |
1251 | ldn++; | |
1252 | } else { | |
1253 | /* device vanished, probably because we don't know how to | |
1254 | * handle it or because it has problems */ | |
1255 | if (lun > 0) { | |
1256 | /* remove mapping */ | |
67b2009a JB |
1257 | get_ldn(shpnt)[id][lun] = TYPE_NO_DEVICE; |
1258 | immediate_assign(shpnt, 0, 0, ldn, REMOVE_LDN); | |
1da177e4 LT |
1259 | } else |
1260 | ldn++; | |
1261 | } | |
1262 | } else if (lun == 0) { | |
1263 | /* map lun == 0, even if no device exists */ | |
67b2009a JB |
1264 | immediate_assign(shpnt, id, lun, ldn, SET_LDN); |
1265 | get_ldn(shpnt)[id][lun] = ldn; /* map ldn */ | |
1da177e4 LT |
1266 | ldn++; |
1267 | } | |
1268 | } | |
1269 | } | |
1270 | /* STEP 4: */ | |
1271 | ||
1272 | /* map remaining ldns to non-existing devices */ | |
1273 | for (lun = 1; lun < 8 && ldn < MAX_LOG_DEV; lun++) | |
1274 | for (id = 0; id < max_pun && ldn < MAX_LOG_DEV; id++) { | |
67b2009a | 1275 | if (get_scsi(shpnt)[id][lun] == TYPE_NO_LUN || get_scsi(shpnt)[id][lun] == TYPE_NO_DEVICE) { |
1da177e4 LT |
1276 | probe_display(1); |
1277 | /* Map remaining ldns only to NON-existing pun,lun | |
1278 | combinations to make sure an inquiry will fail. | |
1279 | For MULTI_LUN, it is needed to avoid adapter autonome | |
1280 | SCSI-remapping. */ | |
67b2009a JB |
1281 | immediate_assign(shpnt, id, lun, ldn, SET_LDN); |
1282 | get_ldn(shpnt)[id][lun] = ldn; | |
1da177e4 LT |
1283 | ldn++; |
1284 | } | |
1285 | } | |
1286 | #ifndef IM_DEBUG_PROBE | |
1287 | printk("mapped."); | |
1288 | #endif | |
1289 | printk("\n"); | |
1290 | #ifdef IM_DEBUG_PROBE | |
1291 | if (ibm_ansi_order) | |
1292 | printk("IBM MCA SCSI: Device order: IBM/ANSI (pun=7 is first).\n"); | |
1293 | else | |
1294 | printk("IBM MCA SCSI: Device order: New Industry Standard (pun=0 is first).\n"); | |
1295 | #endif | |
1296 | ||
1297 | #ifdef IM_DEBUG_PROBE | |
1298 | /* Show the physical and logical mapping during boot. */ | |
1299 | printk("IBM MCA SCSI: Determined SCSI-device-mapping:\n"); | |
1300 | printk(" Physical SCSI-Device Map Logical SCSI-Device Map\n"); | |
1301 | printk("ID\\LUN 0 1 2 3 4 5 6 7 ID\\LUN 0 1 2 3 4 5 6 7\n"); | |
1302 | for (id = 0; id < max_pun; id++) { | |
1303 | printk("%2d ", id); | |
1304 | for (lun = 0; lun < 8; lun++) | |
67b2009a | 1305 | printk("%2s ", ti_p(get_scsi(shpnt)[id][lun])); |
1da177e4 LT |
1306 | printk(" %2d ", id); |
1307 | for (lun = 0; lun < 8; lun++) | |
67b2009a | 1308 | printk("%2s ", ti_l(get_ldn(shpnt)[id][lun])); |
1da177e4 LT |
1309 | printk("\n"); |
1310 | } | |
1311 | #endif | |
1312 | ||
1313 | /* assign total number of found SCSI-devices to the statistics struct */ | |
67b2009a | 1314 | IBM_DS(shpnt).total_scsi_devices = count_devices; |
1da177e4 LT |
1315 | |
1316 | /* decide for output in /proc-filesystem, if the configuration of | |
1317 | SCSI-devices makes dynamical reassignment of devices necessary */ | |
1318 | if (count_devices >= MAX_LOG_DEV) | |
67b2009a | 1319 | IBM_DS(shpnt).dyn_flag = 1; /* dynamical assignment is necessary */ |
1da177e4 | 1320 | else |
67b2009a | 1321 | IBM_DS(shpnt).dyn_flag = 0; /* dynamical assignment is not necessary */ |
1da177e4 LT |
1322 | |
1323 | /* If no SCSI-devices are assigned, return 1 in order to cause message. */ | |
1324 | if (ldn == 0) | |
1325 | printk("IBM MCA SCSI: Warning: No SCSI-devices found/assigned!\n"); | |
1326 | ||
1327 | /* reset the counters for statistics on the current adapter */ | |
67b2009a JB |
1328 | IBM_DS(shpnt).scbs = 0; |
1329 | IBM_DS(shpnt).long_scbs = 0; | |
1330 | IBM_DS(shpnt).total_accesses = 0; | |
1331 | IBM_DS(shpnt).total_interrupts = 0; | |
1332 | IBM_DS(shpnt).dynamical_assignments = 0; | |
1333 | memset(IBM_DS(shpnt).ldn_access, 0x0, sizeof(IBM_DS(shpnt).ldn_access)); | |
1334 | memset(IBM_DS(shpnt).ldn_read_access, 0x0, sizeof(IBM_DS(shpnt).ldn_read_access)); | |
1335 | memset(IBM_DS(shpnt).ldn_write_access, 0x0, sizeof(IBM_DS(shpnt).ldn_write_access)); | |
1336 | memset(IBM_DS(shpnt).ldn_inquiry_access, 0x0, sizeof(IBM_DS(shpnt).ldn_inquiry_access)); | |
1337 | memset(IBM_DS(shpnt).ldn_modeselect_access, 0x0, sizeof(IBM_DS(shpnt).ldn_modeselect_access)); | |
1338 | memset(IBM_DS(shpnt).ldn_assignments, 0x0, sizeof(IBM_DS(shpnt).ldn_assignments)); | |
1da177e4 LT |
1339 | probe_display(0); |
1340 | return; | |
1341 | } | |
1342 | ||
67b2009a | 1343 | static int device_exists(struct Scsi_Host *shpnt, int ldn, int *block_length, int *device_type) |
1da177e4 LT |
1344 | { |
1345 | unsigned char *buf; | |
1346 | /* if no valid device found, return immediately with 0 */ | |
67b2009a | 1347 | if (!(device_inquiry(shpnt, ldn))) |
1da177e4 | 1348 | return 0; |
67b2009a | 1349 | buf = (unsigned char *) (&(ld(shpnt)[ldn].buf)); |
1da177e4 LT |
1350 | if (*buf == TYPE_ROM) { |
1351 | *device_type = TYPE_ROM; | |
1352 | *block_length = 2048; /* (standard blocksize for yellow-/red-book) */ | |
1353 | return 1; | |
1354 | } | |
1355 | if (*buf == TYPE_WORM) { | |
1356 | *device_type = TYPE_WORM; | |
1357 | *block_length = 2048; | |
1358 | return 1; | |
1359 | } | |
1360 | if (*buf == TYPE_DISK) { | |
1361 | *device_type = TYPE_DISK; | |
67b2009a | 1362 | if (read_capacity(shpnt, ldn)) { |
1da177e4 LT |
1363 | *block_length = *(buf + 7) + (*(buf + 6) << 8) + (*(buf + 5) << 16) + (*(buf + 4) << 24); |
1364 | return 1; | |
1365 | } else | |
1366 | return 0; | |
1367 | } | |
1368 | if (*buf == TYPE_MOD) { | |
1369 | *device_type = TYPE_MOD; | |
67b2009a | 1370 | if (read_capacity(shpnt, ldn)) { |
1da177e4 LT |
1371 | *block_length = *(buf + 7) + (*(buf + 6) << 8) + (*(buf + 5) << 16) + (*(buf + 4) << 24); |
1372 | return 1; | |
1373 | } else | |
1374 | return 0; | |
1375 | } | |
1376 | if (*buf == TYPE_TAPE) { | |
1377 | *device_type = TYPE_TAPE; | |
1378 | *block_length = 0; /* not in use (setting by mt and mtst in op.) */ | |
1379 | return 1; | |
1380 | } | |
1381 | if (*buf == TYPE_PROCESSOR) { | |
1382 | *device_type = TYPE_PROCESSOR; | |
1383 | *block_length = 0; /* they set their stuff on drivers */ | |
1384 | return 1; | |
1385 | } | |
1386 | if (*buf == TYPE_SCANNER) { | |
1387 | *device_type = TYPE_SCANNER; | |
1388 | *block_length = 0; /* they set their stuff on drivers */ | |
1389 | return 1; | |
1390 | } | |
1391 | if (*buf == TYPE_MEDIUM_CHANGER) { | |
1392 | *device_type = TYPE_MEDIUM_CHANGER; | |
1393 | *block_length = 0; /* One never knows, what to expect on a medium | |
1394 | changer device. */ | |
1395 | return 1; | |
1396 | } | |
1397 | return 0; | |
1398 | } | |
1399 | ||
1400 | static void internal_ibmmca_scsi_setup(char *str, int *ints) | |
1401 | { | |
1402 | int i, j, io_base, id_base; | |
1403 | char *token; | |
1404 | ||
1405 | io_base = 0; | |
1406 | id_base = 0; | |
1407 | if (str) { | |
1408 | j = 0; | |
1409 | while ((token = strsep(&str, ",")) != NULL) { | |
1410 | if (!strcmp(token, "activity")) | |
1411 | display_mode |= LED_ACTIVITY; | |
1412 | if (!strcmp(token, "display")) | |
1413 | display_mode |= LED_DISP; | |
1414 | if (!strcmp(token, "adisplay")) | |
1415 | display_mode |= LED_ADISP; | |
1416 | if (!strcmp(token, "normal")) | |
1417 | ibm_ansi_order = 0; | |
1418 | if (!strcmp(token, "ansi")) | |
1419 | ibm_ansi_order = 1; | |
1420 | if (!strcmp(token, "fast")) | |
1421 | global_adapter_speed = 0; | |
1422 | if (!strcmp(token, "medium")) | |
1423 | global_adapter_speed = 4; | |
1424 | if (!strcmp(token, "slow")) | |
1425 | global_adapter_speed = 7; | |
1426 | if ((*token == '-') || (isdigit(*token))) { | |
1427 | if (!(j % 2) && (io_base < IM_MAX_HOSTS)) | |
1428 | io_port[io_base++] = simple_strtoul(token, NULL, 0); | |
1429 | if ((j % 2) && (id_base < IM_MAX_HOSTS)) | |
1430 | scsi_id[id_base++] = simple_strtoul(token, NULL, 0); | |
1431 | j++; | |
1432 | } | |
1433 | } | |
1434 | } else if (ints) { | |
1435 | for (i = 0; i < IM_MAX_HOSTS && 2 * i + 2 < ints[0]; i++) { | |
1436 | io_port[i] = ints[2 * i + 2]; | |
1437 | scsi_id[i] = ints[2 * i + 2]; | |
1438 | } | |
1439 | } | |
1440 | return; | |
1441 | } | |
1442 | ||
67b2009a JB |
1443 | #if 0 |
1444 | FIXME NEED TO MOVE TO SYSFS | |
1445 | ||
1da177e4 LT |
1446 | static int ibmmca_getinfo(char *buf, int slot, void *dev_id) |
1447 | { | |
1448 | struct Scsi_Host *shpnt; | |
1449 | int len, speciale, connectore, k; | |
1450 | unsigned int pos[8]; | |
1451 | unsigned long flags; | |
1452 | struct Scsi_Host *dev = dev_id; | |
1453 | ||
1454 | spin_lock_irqsave(dev->host_lock, flags); | |
6391a113 | 1455 | |
1da177e4 LT |
1456 | shpnt = dev; /* assign host-structure to local pointer */ |
1457 | len = 0; /* set filled text-buffer index to 0 */ | |
1458 | /* get the _special contents of the hostdata structure */ | |
1459 | speciale = ((struct ibmmca_hostdata *) shpnt->hostdata)->_special; | |
1460 | connectore = ((struct ibmmca_hostdata *) shpnt->hostdata)->_connector_size; | |
1461 | for (k = 2; k < 4; k++) | |
1462 | pos[k] = ((struct ibmmca_hostdata *) shpnt->hostdata)->_pos[k]; | |
1463 | if (speciale == FORCED_DETECTION) { /* forced detection */ | |
1464 | len += sprintf(buf + len, | |
1465 | "Adapter category: forced detected\n" "***************************************\n" "*** Forced detected SCSI Adapter ***\n" "*** No chip-information available ***\n" "***************************************\n"); | |
1466 | } else if (speciale == INTEGRATED_SCSI) { | |
1467 | /* if the integrated subsystem has been found automatically: */ | |
1468 | len += sprintf(buf + len, | |
1469 | "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 | 1470 | } else if ((speciale >= 0) && (speciale < ARRAY_SIZE(subsys_list))) { |
1da177e4 LT |
1471 | /* if the subsystem is a slot adapter */ |
1472 | len += sprintf(buf + len, "Adapter category: slot-card\n" "ROM Segment Address: "); | |
1473 | if ((pos[2] & 0xf0) == 0xf0) | |
1474 | len += sprintf(buf + len, "off\n"); | |
1475 | else | |
1476 | len += sprintf(buf + len, "0x%x\n", ((pos[2] & 0xf0) << 13) + 0xc0000); | |
1477 | len += sprintf(buf + len, "Chip status: %s\n", (pos[2] & 1) ? "enabled" : "disabled"); | |
1478 | len += sprintf(buf + len, "Adapter I/O Offset: 0x%x\n", ((pos[2] & 0x0e) << 2)); | |
1479 | } else { | |
1480 | len += sprintf(buf + len, "Adapter category: unknown\n"); | |
1481 | } | |
1482 | /* common subsystem information to write to the slotn file */ | |
1483 | len += sprintf(buf + len, "Subsystem PUN: %d\n", shpnt->this_id); | |
1484 | 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)); | |
1485 | len += sprintf(buf + len, "MCA-slot size: %d bits", connectore); | |
1486 | /* Now make sure, the bufferlength is devidable by 4 to avoid | |
1487 | * paging problems of the buffer. */ | |
1488 | while (len % sizeof(int) != (sizeof(int) - 1)) | |
1489 | len += sprintf(buf + len, " "); | |
1490 | len += sprintf(buf + len, "\n"); | |
6391a113 | 1491 | |
1da177e4 | 1492 | spin_unlock_irqrestore(shpnt->host_lock, flags); |
6391a113 | 1493 | |
1da177e4 LT |
1494 | return len; |
1495 | } | |
67b2009a | 1496 | #endif |
1da177e4 | 1497 | |
67b2009a JB |
1498 | static struct scsi_host_template ibmmca_driver_template = { |
1499 | .proc_name = "ibmmca", | |
1500 | .proc_info = ibmmca_proc_info, | |
1501 | .name = "IBM SCSI-Subsystem", | |
1502 | .queuecommand = ibmmca_queuecommand, | |
1503 | .eh_abort_handler = ibmmca_abort, | |
1504 | .eh_host_reset_handler = ibmmca_host_reset, | |
1505 | .bios_param = ibmmca_biosparam, | |
1506 | .can_queue = 16, | |
1507 | .this_id = 7, | |
1508 | .sg_tablesize = 16, | |
1509 | .cmd_per_lun = 1, | |
1510 | .use_clustering = ENABLE_CLUSTERING, | |
1511 | }; | |
1512 | ||
1513 | static int ibmmca_probe(struct device *dev) | |
1da177e4 LT |
1514 | { |
1515 | struct Scsi_Host *shpnt; | |
67b2009a JB |
1516 | int port, id, i, j, k, irq, enabled, ret = -EINVAL; |
1517 | struct mca_device *mca_dev = to_mca_device(dev); | |
1518 | const char *description = ibmmca_description[mca_dev->index]; | |
1da177e4 LT |
1519 | |
1520 | /* First of all, print the version number of the driver. This is | |
1521 | * important to allow better user bugreports in case of already | |
1522 | * having problems with the MCA_bus probing. */ | |
1523 | printk(KERN_INFO "IBM MCA SCSI: Version %s\n", IBMMCA_SCSI_DRIVER_VERSION); | |
1da177e4 LT |
1524 | /* The POS2-register of all PS/2 model SCSI-subsystems has the following |
1525 | * interpretation of bits: | |
1526 | * Bit 7 - 4 : Chip Revision ID (Release) | |
1527 | * Bit 3 - 2 : Reserved | |
1528 | * Bit 1 : 8k NVRAM Disabled | |
1529 | * Bit 0 : Chip Enable (EN-Signal) | |
1530 | * The POS3-register is interpreted as follows: | |
1531 | * Bit 7 - 5 : SCSI ID | |
1532 | * Bit 4 : Reserved = 0 | |
1533 | * Bit 3 - 0 : Reserved = 0 | |
1534 | * (taken from "IBM, PS/2 Hardware Interface Technical Reference, Common | |
1535 | * Interfaces (1991)"). | |
1536 | * In short words, this means, that IBM PS/2 machines only support | |
1537 | * 1 single subsystem by default. The slot-adapters must have another | |
1538 | * configuration on pos2. Here, one has to assume the following | |
1539 | * things for POS2-register: | |
1540 | * Bit 7 - 4 : Chip Revision ID (Release) | |
1541 | * Bit 3 - 1 : port offset factor | |
1542 | * Bit 0 : Chip Enable (EN-Signal) | |
1543 | * As I found a patch here, setting the IO-registers to 0x3540 forced, | |
1544 | * as there was a 0x05 in POS2 on a model 56, I assume, that the | |
1545 | * port 0x3540 must be fix for integrated SCSI-controllers. | |
1546 | * Ok, this discovery leads to the following implementation: (M.Lang) */ | |
1547 | ||
1548 | /* first look for the IBM SCSI integrated subsystem on the motherboard */ | |
1549 | for (j = 0; j < 8; j++) /* read the pos-information */ | |
67b2009a JB |
1550 | pos[j] = mca_device_read_pos(mca_dev, j); |
1551 | id = (pos[3] & 0xe0) >> 5; /* this is correct and represents the PUN */ | |
1552 | enabled = (pos[2] &0x01); | |
1553 | if (!enabled) { | |
1554 | printk(KERN_WARNING "IBM MCA SCSI: WARNING - Your SCSI-subsystem is disabled!\n"); | |
1555 | printk(KERN_WARNING " SCSI-operations may not work.\n"); | |
1556 | } | |
1557 | ||
1da177e4 LT |
1558 | /* pos2 = pos3 = 0xff if there is no integrated SCSI-subsystem present, but |
1559 | * if we ignore the settings of all surrounding pos registers, it is not | |
1560 | * completely sufficient to only check pos2 and pos3. */ | |
1561 | /* Therefore, now the following if statement is used to | |
1562 | * make sure, we see a real integrated onboard SCSI-interface and no | |
1563 | * internal system information, which gets mapped to some pos registers | |
1564 | * on models 95xx. */ | |
67b2009a JB |
1565 | if (mca_dev->slot == MCA_INTEGSCSI && |
1566 | ((!pos[0] && !pos[1] && pos[2] > 0 && | |
1567 | pos[3] > 0 && !pos[4] && !pos[5] && | |
1568 | !pos[6] && !pos[7]) || | |
1569 | (pos[0] == 0xff && pos[1] == 0xff && | |
1570 | pos[2] < 0xff && pos[3] < 0xff && | |
1571 | pos[4] == 0xff && pos[5] == 0xff && | |
1572 | pos[6] == 0xff && pos[7] == 0xff))) { | |
1573 | irq = IM_IRQ; | |
1574 | port = IM_IO_PORT; | |
1575 | } else { | |
1576 | irq = IM_IRQ; | |
1577 | port = IM_IO_PORT + ((pos[2] &0x0e) << 2); | |
1578 | if ((mca_dev->index == IBM_SCSI2_FW) && (pos[6] != 0)) { | |
1579 | printk(KERN_ERR "IBM MCA SCSI: ERROR - Wrong POS(6)-register setting!\n"); | |
1580 | printk(KERN_ERR " Impossible to determine adapter PUN!\n"); | |
1581 | printk(KERN_ERR " Guessing adapter PUN = 7.\n"); | |
1582 | id = 7; | |
1583 | } else { | |
1584 | id = (pos[3] & 0xe0) >> 5; /* get subsystem PUN */ | |
1585 | if (mca_dev->index == IBM_SCSI2_FW) { | |
1586 | id |= (pos[3] & 0x10) >> 1; /* get subsystem PUN high-bit | |
1587 | * for F/W adapters */ | |
1588 | } | |
1da177e4 | 1589 | } |
67b2009a JB |
1590 | if ((mca_dev->index == IBM_SCSI2_FW) && |
1591 | (pos[4] & 0x01) && (pos[6] == 0)) { | |
1592 | /* IRQ11 is used by SCSI-2 F/W Adapter/A */ | |
1593 | printk(KERN_DEBUG "IBM MCA SCSI: SCSI-2 F/W adapter needs IRQ 11.\n"); | |
1594 | irq = IM_IRQ_FW; | |
1da177e4 LT |
1595 | } |
1596 | } | |
1597 | ||
1da177e4 | 1598 | |
1da177e4 | 1599 | |
67b2009a JB |
1600 | /* give detailed information on the subsystem. This helps me |
1601 | * additionally during debugging and analyzing bug-reports. */ | |
1602 | printk(KERN_INFO "IBM MCA SCSI: %s found, io=0x%x, scsi id=%d,\n", | |
1603 | description, port, id); | |
1604 | if (mca_dev->slot == MCA_INTEGSCSI) | |
1605 | 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."); | |
1606 | else { | |
1607 | if ((pos[2] & 0xf0) == 0xf0) | |
1608 | printk(KERN_DEBUG " ROM Addr.=off,"); | |
1609 | else | |
1610 | printk(KERN_DEBUG " ROM Addr.=0x%x,", ((pos[2] & 0xf0) << 13) + 0xc0000); | |
1611 | ||
1612 | printk(KERN_DEBUG " port-offset=0x%x, subsystem=%s\n", ((pos[2] & 0x0e) << 2), (pos[2] & 1) ? "enabled." : "disabled."); | |
1613 | } | |
1da177e4 LT |
1614 | |
1615 | /* check I/O region */ | |
67b2009a | 1616 | if (!request_region(port, IM_N_IO_PORT, description)) { |
1da177e4 | 1617 | 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 | 1618 | goto out_fail; |
1da177e4 LT |
1619 | } |
1620 | ||
1621 | /* register host */ | |
67b2009a JB |
1622 | shpnt = scsi_host_alloc(&ibmmca_driver_template, |
1623 | sizeof(struct ibmmca_hostdata)); | |
1da177e4 LT |
1624 | if (!shpnt) { |
1625 | printk(KERN_ERR "IBM MCA SCSI: Unable to register host.\n"); | |
67b2009a JB |
1626 | goto out_release; |
1627 | } | |
1628 | ||
1629 | dev_set_drvdata(dev, shpnt); | |
1630 | if(request_irq(irq, interrupt_handler, IRQF_SHARED, description, dev)) { | |
1631 | printk(KERN_ERR "IBM MCA SCSI: failed to request interrupt %d\n", irq); | |
1632 | goto out_free_host; | |
1da177e4 LT |
1633 | } |
1634 | ||
1635 | /* request I/O region */ | |
67b2009a JB |
1636 | special(shpnt) = mca_dev->index; /* important assignment or else crash! */ |
1637 | subsystem_connector_size(shpnt) = 0; /* preset slot-size */ | |
1638 | shpnt->irq = irq; /* assign necessary stuff for the adapter */ | |
1da177e4 LT |
1639 | shpnt->io_port = port; |
1640 | shpnt->n_io_port = IM_N_IO_PORT; | |
1641 | shpnt->this_id = id; | |
1642 | shpnt->max_id = 8; /* 8 PUNs are default */ | |
1643 | /* now, the SCSI-subsystem is connected to Linux */ | |
1644 | ||
1da177e4 | 1645 | #ifdef IM_DEBUG_PROBE |
67b2009a | 1646 | ctrl = (unsigned int) (inb(IM_CTR_REG(found))); /* get control-register status */ |
1da177e4 LT |
1647 | printk("IBM MCA SCSI: Control Register contents: %x, status: %x\n", ctrl, inb(IM_STAT_REG(found))); |
1648 | printk("IBM MCA SCSI: This adapters' POS-registers: "); | |
1649 | for (i = 0; i < 8; i++) | |
1650 | printk("%x ", pos[i]); | |
1651 | printk("\n"); | |
1652 | #endif | |
67b2009a | 1653 | reset_status(shpnt) = IM_RESET_NOT_IN_PROGRESS; |
1da177e4 LT |
1654 | |
1655 | for (i = 0; i < 16; i++) /* reset the tables */ | |
1656 | for (j = 0; j < 8; j++) | |
67b2009a | 1657 | get_ldn(shpnt)[i][j] = MAX_LOG_DEV; |
1da177e4 LT |
1658 | |
1659 | /* check which logical devices exist */ | |
1660 | /* after this line, local interrupting is possible: */ | |
67b2009a JB |
1661 | local_checking_phase_flag(shpnt) = 1; |
1662 | check_devices(shpnt, mca_dev->index); /* call by value, using the global variable hosts */ | |
1663 | local_checking_phase_flag(shpnt) = 0; | |
1664 | ||
1da177e4 | 1665 | /* an ibm mca subsystem has been detected */ |
67b2009a JB |
1666 | |
1667 | for (k = 2; k < 7; k++) | |
1668 | ((struct ibmmca_hostdata *) shpnt->hostdata)->_pos[k] = pos[k]; | |
1669 | ((struct ibmmca_hostdata *) shpnt->hostdata)->_special = INTEGRATED_SCSI; | |
1670 | mca_device_set_name(mca_dev, description); | |
1671 | /* FIXME: NEED TO REPLUMB TO SYSFS | |
1672 | mca_set_adapter_procfn(MCA_INTEGSCSI, (MCA_ProcFn) ibmmca_getinfo, shpnt); | |
1673 | */ | |
1674 | mca_device_set_claim(mca_dev, 1); | |
1675 | if (scsi_add_host(shpnt, dev)) { | |
1676 | dev_printk(KERN_ERR, dev, "IBM MCA SCSI: scsi_add_host failed\n"); | |
1677 | goto out_free_host; | |
1678 | } | |
1679 | scsi_scan_host(shpnt); | |
1680 | ||
1681 | return 0; | |
1682 | out_free_host: | |
1683 | scsi_host_put(shpnt); | |
1684 | out_release: | |
1685 | release_region(port, IM_N_IO_PORT); | |
1686 | out_fail: | |
1687 | return ret; | |
1da177e4 LT |
1688 | } |
1689 | ||
67b2009a | 1690 | static int __devexit ibmmca_remove(struct device *dev) |
1da177e4 | 1691 | { |
67b2009a JB |
1692 | struct Scsi_Host *shpnt = dev_get_drvdata(dev); |
1693 | scsi_remove_host(shpnt); | |
1da177e4 | 1694 | release_region(shpnt->io_port, shpnt->n_io_port); |
67b2009a | 1695 | free_irq(shpnt->irq, dev); |
1da177e4 LT |
1696 | return 0; |
1697 | } | |
1698 | ||
1699 | /* The following routine is the SCSI command queue for the midlevel driver */ | |
1700 | static int ibmmca_queuecommand(Scsi_Cmnd * cmd, void (*done) (Scsi_Cmnd *)) | |
1701 | { | |
1702 | unsigned int ldn; | |
1703 | unsigned int scsi_cmd; | |
1704 | struct im_scb *scb; | |
1705 | struct Scsi_Host *shpnt; | |
1706 | int current_ldn; | |
1707 | int id, lun; | |
1708 | int target; | |
1da177e4 LT |
1709 | int max_pun; |
1710 | int i; | |
5f60ef6a | 1711 | struct scatterlist *sg; |
1da177e4 LT |
1712 | |
1713 | shpnt = cmd->device->host; | |
1da177e4 | 1714 | |
67b2009a | 1715 | max_pun = subsystem_maxid(shpnt); |
1da177e4 LT |
1716 | if (ibm_ansi_order) { |
1717 | target = max_pun - 1 - cmd->device->id; | |
67b2009a | 1718 | if ((target <= subsystem_pun(shpnt)) && (cmd->device->id <= subsystem_pun(shpnt))) |
1da177e4 | 1719 | target--; |
67b2009a | 1720 | else if ((target >= subsystem_pun(shpnt)) && (cmd->device->id >= subsystem_pun(shpnt))) |
1da177e4 LT |
1721 | target++; |
1722 | } else | |
1723 | target = cmd->device->id; | |
1724 | ||
1725 | /* if (target,lun) is NO LUN or not existing at all, return error */ | |
67b2009a | 1726 | if ((get_scsi(shpnt)[target][cmd->device->lun] == TYPE_NO_LUN) || (get_scsi(shpnt)[target][cmd->device->lun] == TYPE_NO_DEVICE)) { |
1da177e4 LT |
1727 | cmd->result = DID_NO_CONNECT << 16; |
1728 | if (done) | |
1729 | done(cmd); | |
1730 | return 0; | |
1731 | } | |
1732 | ||
1733 | /*if (target,lun) unassigned, do further checks... */ | |
67b2009a | 1734 | ldn = get_ldn(shpnt)[target][cmd->device->lun]; |
1da177e4 LT |
1735 | if (ldn >= MAX_LOG_DEV) { /* on invalid ldn do special stuff */ |
1736 | if (ldn > MAX_LOG_DEV) { /* dynamical remapping if ldn unassigned */ | |
67b2009a JB |
1737 | current_ldn = next_ldn(shpnt); /* stop-value for one circle */ |
1738 | while (ld(shpnt)[next_ldn(shpnt)].cmd) { /* search for a occupied, but not in */ | |
1da177e4 | 1739 | /* command-processing ldn. */ |
67b2009a JB |
1740 | next_ldn(shpnt)++; |
1741 | if (next_ldn(shpnt) >= MAX_LOG_DEV) | |
1742 | next_ldn(shpnt) = 7; | |
1743 | if (current_ldn == next_ldn(shpnt)) { /* One circle done ? */ | |
1da177e4 | 1744 | /* no non-processing ldn found */ |
017560fc JG |
1745 | scmd_printk(KERN_WARNING, cmd, |
1746 | "IBM MCA SCSI: Cannot assign SCSI-device dynamically!\n" | |
1747 | " On ldn 7-14 SCSI-commands everywhere in progress.\n" | |
1748 | " Reporting DID_NO_CONNECT for device.\n"); | |
1da177e4 LT |
1749 | cmd->result = DID_NO_CONNECT << 16; /* return no connect */ |
1750 | if (done) | |
1751 | done(cmd); | |
1752 | return 0; | |
1753 | } | |
1754 | } | |
1755 | ||
1756 | /* unmap non-processing ldn */ | |
1757 | for (id = 0; id < max_pun; id++) | |
1758 | for (lun = 0; lun < 8; lun++) { | |
67b2009a JB |
1759 | if (get_ldn(shpnt)[id][lun] == next_ldn(shpnt)) { |
1760 | get_ldn(shpnt)[id][lun] = TYPE_NO_DEVICE; | |
1761 | get_scsi(shpnt)[id][lun] = TYPE_NO_DEVICE; | |
1da177e4 LT |
1762 | /* unmap entry */ |
1763 | } | |
1764 | } | |
1765 | /* set reduced interrupt_handler-mode for checking */ | |
67b2009a | 1766 | local_checking_phase_flag(shpnt) = 1; |
1da177e4 | 1767 | /* map found ldn to pun,lun */ |
67b2009a | 1768 | get_ldn(shpnt)[target][cmd->device->lun] = next_ldn(shpnt); |
1da177e4 | 1769 | /* change ldn to the right value, that is now next_ldn */ |
67b2009a | 1770 | ldn = next_ldn(shpnt); |
1da177e4 | 1771 | /* unassign all ldns (pun,lun,ldn does not matter for remove) */ |
67b2009a | 1772 | immediate_assign(shpnt, 0, 0, 0, REMOVE_LDN); |
1da177e4 | 1773 | /* set only LDN for remapped device */ |
67b2009a | 1774 | immediate_assign(shpnt, target, cmd->device->lun, ldn, SET_LDN); |
1da177e4 | 1775 | /* get device information for ld[ldn] */ |
67b2009a JB |
1776 | if (device_exists(shpnt, ldn, &ld(shpnt)[ldn].block_length, &ld(shpnt)[ldn].device_type)) { |
1777 | ld(shpnt)[ldn].cmd = NULL; /* To prevent panic set 0, because | |
1da177e4 LT |
1778 | devices that were not assigned, |
1779 | should have nothing in progress. */ | |
67b2009a | 1780 | get_scsi(shpnt)[target][cmd->device->lun] = ld(shpnt)[ldn].device_type; |
1da177e4 | 1781 | /* increase assignment counters for statistics in /proc */ |
67b2009a JB |
1782 | IBM_DS(shpnt).dynamical_assignments++; |
1783 | IBM_DS(shpnt).ldn_assignments[ldn]++; | |
1da177e4 LT |
1784 | } else |
1785 | /* panic here, because a device, found at boottime has | |
1786 | vanished */ | |
1787 | panic("IBM MCA SCSI: ldn=0x%x, SCSI-device on (%d,%d) vanished!\n", ldn, target, cmd->device->lun); | |
1788 | /* unassign again all ldns (pun,lun,ldn does not matter for remove) */ | |
67b2009a | 1789 | immediate_assign(shpnt, 0, 0, 0, REMOVE_LDN); |
1da177e4 LT |
1790 | /* remap all ldns, as written in the pun/lun table */ |
1791 | lun = 0; | |
1792 | #ifdef CONFIG_SCSI_MULTI_LUN | |
1793 | for (lun = 0; lun < 8; lun++) | |
1794 | #endif | |
1795 | for (id = 0; id < max_pun; id++) { | |
67b2009a JB |
1796 | if (get_ldn(shpnt)[id][lun] <= MAX_LOG_DEV) |
1797 | immediate_assign(shpnt, id, lun, get_ldn(shpnt)[id][lun], SET_LDN); | |
1da177e4 LT |
1798 | } |
1799 | /* set back to normal interrupt_handling */ | |
67b2009a | 1800 | local_checking_phase_flag(shpnt) = 0; |
1da177e4 LT |
1801 | #ifdef IM_DEBUG_PROBE |
1802 | /* Information on syslog terminal */ | |
1803 | printk("IBM MCA SCSI: ldn=0x%x dynamically reassigned to (%d,%d).\n", ldn, target, cmd->device->lun); | |
1804 | #endif | |
1805 | /* increase next_ldn for next dynamical assignment */ | |
67b2009a JB |
1806 | next_ldn(shpnt)++; |
1807 | if (next_ldn(shpnt) >= MAX_LOG_DEV) | |
1808 | next_ldn(shpnt) = 7; | |
1da177e4 LT |
1809 | } else { /* wall against Linux accesses to the subsystem adapter */ |
1810 | cmd->result = DID_BAD_TARGET << 16; | |
1811 | if (done) | |
1812 | done(cmd); | |
1813 | return 0; | |
1814 | } | |
1815 | } | |
1816 | ||
1817 | /*verify there is no command already in progress for this log dev */ | |
67b2009a | 1818 | if (ld(shpnt)[ldn].cmd) |
1da177e4 LT |
1819 | panic("IBM MCA SCSI: cmd already in progress for this ldn.\n"); |
1820 | ||
1821 | /*save done in cmd, and save cmd for the interrupt handler */ | |
1822 | cmd->scsi_done = done; | |
67b2009a | 1823 | ld(shpnt)[ldn].cmd = cmd; |
1da177e4 LT |
1824 | |
1825 | /*fill scb information independent of the scsi command */ | |
67b2009a JB |
1826 | scb = &(ld(shpnt)[ldn].scb); |
1827 | ld(shpnt)[ldn].tsb.dev_status = 0; | |
1da177e4 | 1828 | scb->enable = IM_REPORT_TSB_ONLY_ON_ERROR | IM_RETRY_ENABLE; |
67b2009a | 1829 | scb->tsb_adr = isa_virt_to_bus(&(ld(shpnt)[ldn].tsb)); |
1da177e4 LT |
1830 | scsi_cmd = cmd->cmnd[0]; |
1831 | ||
5f60ef6a FT |
1832 | if (scsi_sg_count(cmd)) { |
1833 | BUG_ON(scsi_sg_count(cmd) > 16); | |
1834 | ||
1835 | scsi_for_each_sg(cmd, sg, scsi_sg_count(cmd), i) { | |
1836 | ld(shpnt)[ldn].sge[i].address = (void *) (isa_page_to_bus(sg->page) + sg->offset); | |
1837 | ld(shpnt)[ldn].sge[i].byte_length = sg->length; | |
1da177e4 LT |
1838 | } |
1839 | scb->enable |= IM_POINTER_TO_LIST; | |
67b2009a | 1840 | scb->sys_buf_adr = isa_virt_to_bus(&(ld(shpnt)[ldn].sge[0])); |
5f60ef6a | 1841 | scb->sys_buf_length = scsi_sg_count(cmd) * sizeof(struct im_sge); |
1da177e4 | 1842 | } else { |
5f60ef6a | 1843 | scb->sys_buf_adr = isa_virt_to_bus(scsi_sglist(cmd)); |
1da177e4 LT |
1844 | /* recent Linux midlevel SCSI places 1024 byte for inquiry |
1845 | * command. Far too much for old PS/2 hardware. */ | |
1846 | switch (scsi_cmd) { | |
1847 | /* avoid command errors by setting bufferlengths to | |
1848 | * ANSI-standard. Beware of forcing it to 255, | |
1849 | * this could SEGV the kernel!!! */ | |
1850 | case INQUIRY: | |
1851 | case REQUEST_SENSE: | |
1852 | case MODE_SENSE: | |
1853 | case MODE_SELECT: | |
5f60ef6a | 1854 | if (scsi_bufflen(cmd) > 255) |
1da177e4 LT |
1855 | scb->sys_buf_length = 255; |
1856 | else | |
5f60ef6a | 1857 | scb->sys_buf_length = scsi_bufflen(cmd); |
1da177e4 LT |
1858 | break; |
1859 | case TEST_UNIT_READY: | |
1860 | scb->sys_buf_length = 0; | |
1861 | break; | |
1862 | default: | |
5f60ef6a | 1863 | scb->sys_buf_length = scsi_bufflen(cmd); |
1da177e4 LT |
1864 | break; |
1865 | } | |
1866 | } | |
1867 | /*fill scb information dependent on scsi command */ | |
1868 | ||
1869 | #ifdef IM_DEBUG_CMD | |
1870 | printk("issue scsi cmd=%02x to ldn=%d\n", scsi_cmd, ldn); | |
1871 | #endif | |
1872 | ||
1873 | /* for specific device-type debugging: */ | |
1874 | #ifdef IM_DEBUG_CMD_SPEC_DEV | |
67b2009a JB |
1875 | if (ld(shpnt)[ldn].device_type == IM_DEBUG_CMD_DEVICE) |
1876 | printk("(SCSI-device-type=0x%x) issue scsi cmd=%02x to ldn=%d\n", ld(shpnt)[ldn].device_type, scsi_cmd, ldn); | |
1da177e4 LT |
1877 | #endif |
1878 | ||
1879 | /* for possible panics store current command */ | |
67b2009a JB |
1880 | last_scsi_command(shpnt)[ldn] = scsi_cmd; |
1881 | last_scsi_type(shpnt)[ldn] = IM_SCB; | |
1da177e4 | 1882 | /* update statistical info */ |
67b2009a JB |
1883 | IBM_DS(shpnt).total_accesses++; |
1884 | IBM_DS(shpnt).ldn_access[ldn]++; | |
1da177e4 LT |
1885 | |
1886 | switch (scsi_cmd) { | |
1887 | case READ_6: | |
1888 | case WRITE_6: | |
1889 | case READ_10: | |
1890 | case WRITE_10: | |
1891 | case READ_12: | |
1892 | case WRITE_12: | |
1893 | /* Distinguish between disk and other devices. Only disks (that are the | |
1894 | most frequently accessed devices) should be supported by the | |
1895 | IBM-SCSI-Subsystem commands. */ | |
67b2009a | 1896 | switch (ld(shpnt)[ldn].device_type) { |
1da177e4 LT |
1897 | case TYPE_DISK: /* for harddisks enter here ... */ |
1898 | case TYPE_MOD: /* ... try it also for MO-drives (send flames as */ | |
1899 | /* you like, if this won't work.) */ | |
1900 | if (scsi_cmd == READ_6 || scsi_cmd == READ_10 || scsi_cmd == READ_12) { | |
1901 | /* read command preparations */ | |
1902 | scb->enable |= IM_READ_CONTROL; | |
67b2009a | 1903 | IBM_DS(shpnt).ldn_read_access[ldn]++; /* increase READ-access on ldn stat. */ |
1da177e4 LT |
1904 | scb->command = IM_READ_DATA_CMD | IM_NO_DISCONNECT; |
1905 | } else { /* write command preparations */ | |
67b2009a | 1906 | IBM_DS(shpnt).ldn_write_access[ldn]++; /* increase write-count on ldn stat. */ |
1da177e4 LT |
1907 | scb->command = IM_WRITE_DATA_CMD | IM_NO_DISCONNECT; |
1908 | } | |
1909 | if (scsi_cmd == READ_6 || scsi_cmd == WRITE_6) { | |
1910 | scb->u1.log_blk_adr = (((unsigned) cmd->cmnd[3]) << 0) | (((unsigned) cmd->cmnd[2]) << 8) | ((((unsigned) cmd->cmnd[1]) & 0x1f) << 16); | |
1911 | scb->u2.blk.count = (unsigned) cmd->cmnd[4]; | |
1912 | } else { | |
1913 | 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); | |
1914 | scb->u2.blk.count = (((unsigned) cmd->cmnd[8]) << 0) | (((unsigned) cmd->cmnd[7]) << 8); | |
1915 | } | |
67b2009a JB |
1916 | last_scsi_logical_block(shpnt)[ldn] = scb->u1.log_blk_adr; |
1917 | last_scsi_blockcount(shpnt)[ldn] = scb->u2.blk.count; | |
1918 | scb->u2.blk.length = ld(shpnt)[ldn].block_length; | |
1da177e4 LT |
1919 | break; |
1920 | /* for other devices, enter here. Other types are not known by | |
1921 | Linux! TYPE_NO_LUN is forbidden as valid device. */ | |
1922 | case TYPE_ROM: | |
1923 | case TYPE_TAPE: | |
1924 | case TYPE_PROCESSOR: | |
1925 | case TYPE_WORM: | |
1926 | case TYPE_SCANNER: | |
1927 | case TYPE_MEDIUM_CHANGER: | |
1928 | /* If there is a sequential-device, IBM recommends to use | |
1929 | IM_OTHER_SCSI_CMD_CMD instead of subsystem READ/WRITE. | |
1930 | This includes CD-ROM devices, too, due to the partial sequential | |
1931 | read capabilities. */ | |
1932 | scb->command = IM_OTHER_SCSI_CMD_CMD; | |
1933 | if (scsi_cmd == READ_6 || scsi_cmd == READ_10 || scsi_cmd == READ_12) | |
1934 | /* enable READ */ | |
1935 | scb->enable |= IM_READ_CONTROL; | |
1936 | scb->enable |= IM_BYPASS_BUFFER; | |
1937 | scb->u1.scsi_cmd_length = cmd->cmd_len; | |
1938 | memcpy(scb->u2.scsi_command, cmd->cmnd, cmd->cmd_len); | |
67b2009a | 1939 | last_scsi_type(shpnt)[ldn] = IM_LONG_SCB; |
1da177e4 LT |
1940 | /* Read/write on this non-disk devices is also displayworthy, |
1941 | so flash-up the LED/display. */ | |
1942 | break; | |
1943 | } | |
1944 | break; | |
1945 | case INQUIRY: | |
67b2009a | 1946 | IBM_DS(shpnt).ldn_inquiry_access[ldn]++; |
1da177e4 LT |
1947 | scb->command = IM_DEVICE_INQUIRY_CMD; |
1948 | scb->enable |= IM_READ_CONTROL | IM_SUPRESS_EXCEPTION_SHORT | IM_BYPASS_BUFFER; | |
1949 | scb->u1.log_blk_adr = 0; | |
1950 | break; | |
1951 | case TEST_UNIT_READY: | |
1952 | scb->command = IM_OTHER_SCSI_CMD_CMD; | |
1953 | scb->enable |= IM_READ_CONTROL | IM_SUPRESS_EXCEPTION_SHORT | IM_BYPASS_BUFFER; | |
1954 | scb->u1.log_blk_adr = 0; | |
1955 | scb->u1.scsi_cmd_length = 6; | |
1956 | memcpy(scb->u2.scsi_command, cmd->cmnd, 6); | |
67b2009a | 1957 | last_scsi_type(shpnt)[ldn] = IM_LONG_SCB; |
1da177e4 LT |
1958 | break; |
1959 | case READ_CAPACITY: | |
1960 | /* the length of system memory buffer must be exactly 8 bytes */ | |
1961 | scb->command = IM_READ_CAPACITY_CMD; | |
1962 | scb->enable |= IM_READ_CONTROL | IM_BYPASS_BUFFER; | |
1963 | if (scb->sys_buf_length > 8) | |
1964 | scb->sys_buf_length = 8; | |
1965 | break; | |
1966 | /* Commands that need read-only-mode (system <- device): */ | |
1967 | case REQUEST_SENSE: | |
1968 | scb->command = IM_REQUEST_SENSE_CMD; | |
1969 | scb->enable |= IM_READ_CONTROL | IM_SUPRESS_EXCEPTION_SHORT | IM_BYPASS_BUFFER; | |
1970 | break; | |
1971 | /* Commands that need write-only-mode (system -> device): */ | |
1972 | case MODE_SELECT: | |
1973 | case MODE_SELECT_10: | |
67b2009a | 1974 | IBM_DS(shpnt).ldn_modeselect_access[ldn]++; |
1da177e4 LT |
1975 | scb->command = IM_OTHER_SCSI_CMD_CMD; |
1976 | scb->enable |= IM_SUPRESS_EXCEPTION_SHORT | IM_BYPASS_BUFFER; /*Select needs WRITE-enabled */ | |
1977 | scb->u1.scsi_cmd_length = cmd->cmd_len; | |
1978 | memcpy(scb->u2.scsi_command, cmd->cmnd, cmd->cmd_len); | |
67b2009a | 1979 | last_scsi_type(shpnt)[ldn] = IM_LONG_SCB; |
1da177e4 LT |
1980 | break; |
1981 | /* For other commands, read-only is useful. Most other commands are | |
1982 | running without an input-data-block. */ | |
1983 | default: | |
1984 | scb->command = IM_OTHER_SCSI_CMD_CMD; | |
1985 | scb->enable |= IM_READ_CONTROL | IM_SUPRESS_EXCEPTION_SHORT | IM_BYPASS_BUFFER; | |
1986 | scb->u1.scsi_cmd_length = cmd->cmd_len; | |
1987 | memcpy(scb->u2.scsi_command, cmd->cmnd, cmd->cmd_len); | |
67b2009a | 1988 | last_scsi_type(shpnt)[ldn] = IM_LONG_SCB; |
1da177e4 LT |
1989 | break; |
1990 | } | |
1991 | /*issue scb command, and return */ | |
1992 | if (++disk_rw_in_progress == 1) | |
1993 | PS2_DISK_LED_ON(shpnt->host_no, target); | |
1994 | ||
67b2009a JB |
1995 | if (last_scsi_type(shpnt)[ldn] == IM_LONG_SCB) { |
1996 | issue_cmd(shpnt, isa_virt_to_bus(scb), IM_LONG_SCB | ldn); | |
1997 | IBM_DS(shpnt).long_scbs++; | |
1da177e4 | 1998 | } else { |
67b2009a JB |
1999 | issue_cmd(shpnt, isa_virt_to_bus(scb), IM_SCB | ldn); |
2000 | IBM_DS(shpnt).scbs++; | |
1da177e4 LT |
2001 | } |
2002 | return 0; | |
2003 | } | |
2004 | ||
8fa728a2 | 2005 | static int __ibmmca_abort(Scsi_Cmnd * cmd) |
1da177e4 LT |
2006 | { |
2007 | /* Abort does not work, as the adapter never generates an interrupt on | |
2008 | * whatever situation is simulated, even when really pending commands | |
2009 | * are running on the adapters' hardware ! */ | |
2010 | ||
2011 | struct Scsi_Host *shpnt; | |
2012 | unsigned int ldn; | |
2013 | void (*saved_done) (Scsi_Cmnd *); | |
2014 | int target; | |
1da177e4 LT |
2015 | int max_pun; |
2016 | unsigned long imm_command; | |
2017 | ||
2018 | #ifdef IM_DEBUG_PROBE | |
2019 | printk("IBM MCA SCSI: Abort subroutine called...\n"); | |
2020 | #endif | |
2021 | ||
2022 | shpnt = cmd->device->host; | |
1da177e4 | 2023 | |
67b2009a | 2024 | max_pun = subsystem_maxid(shpnt); |
1da177e4 LT |
2025 | if (ibm_ansi_order) { |
2026 | target = max_pun - 1 - cmd->device->id; | |
67b2009a | 2027 | if ((target <= subsystem_pun(shpnt)) && (cmd->device->id <= subsystem_pun(shpnt))) |
1da177e4 | 2028 | target--; |
67b2009a | 2029 | else if ((target >= subsystem_pun(shpnt)) && (cmd->device->id >= subsystem_pun(shpnt))) |
1da177e4 LT |
2030 | target++; |
2031 | } else | |
2032 | target = cmd->device->id; | |
2033 | ||
2034 | /* get logical device number, and disable system interrupts */ | |
2035 | printk(KERN_WARNING "IBM MCA SCSI: Sending abort to device pun=%d, lun=%d.\n", target, cmd->device->lun); | |
67b2009a | 2036 | ldn = get_ldn(shpnt)[target][cmd->device->lun]; |
1da177e4 LT |
2037 | |
2038 | /*if cmd for this ldn has already finished, no need to abort */ | |
67b2009a | 2039 | if (!ld(shpnt)[ldn].cmd) { |
1da177e4 LT |
2040 | return SUCCESS; |
2041 | } | |
2042 | ||
2043 | /* Clear ld.cmd, save done function, install internal done, | |
2044 | * send abort immediate command (this enables sys. interrupts), | |
2045 | * and wait until the interrupt arrives. | |
2046 | */ | |
2047 | saved_done = cmd->scsi_done; | |
2048 | cmd->scsi_done = internal_done; | |
2049 | cmd->SCp.Status = 0; | |
67b2009a JB |
2050 | last_scsi_command(shpnt)[ldn] = IM_ABORT_IMM_CMD; |
2051 | last_scsi_type(shpnt)[ldn] = IM_IMM_CMD; | |
2052 | imm_command = inl(IM_CMD_REG(shpnt)); | |
1da177e4 LT |
2053 | imm_command &= (unsigned long) (0xffff0000); /* mask reserved stuff */ |
2054 | imm_command |= (unsigned long) (IM_ABORT_IMM_CMD); | |
2055 | /* must wait for attention reg not busy */ | |
2056 | /* FIXME - timeout, politeness */ | |
2057 | while (1) { | |
67b2009a | 2058 | if (!(inb(IM_STAT_REG(shpnt)) & IM_BUSY)) |
1da177e4 LT |
2059 | break; |
2060 | } | |
2061 | /* write registers and enable system interrupts */ | |
67b2009a JB |
2062 | outl(imm_command, IM_CMD_REG(shpnt)); |
2063 | outb(IM_IMM_CMD | ldn, IM_ATTN_REG(shpnt)); | |
1da177e4 LT |
2064 | #ifdef IM_DEBUG_PROBE |
2065 | printk("IBM MCA SCSI: Abort queued to adapter...\n"); | |
2066 | #endif | |
2067 | spin_unlock_irq(shpnt->host_lock); | |
2068 | while (!cmd->SCp.Status) | |
2069 | yield(); | |
2070 | spin_lock_irq(shpnt->host_lock); | |
2071 | cmd->scsi_done = saved_done; | |
2072 | #ifdef IM_DEBUG_PROBE | |
2073 | printk("IBM MCA SCSI: Abort returned with adapter response...\n"); | |
2074 | #endif | |
2075 | ||
2076 | /*if abort went well, call saved done, then return success or error */ | |
2077 | if (cmd->result == (DID_ABORT << 16)) | |
2078 | { | |
2079 | cmd->result |= DID_ABORT << 16; | |
2080 | if (cmd->scsi_done) | |
2081 | (cmd->scsi_done) (cmd); | |
67b2009a | 2082 | ld(shpnt)[ldn].cmd = NULL; |
1da177e4 LT |
2083 | #ifdef IM_DEBUG_PROBE |
2084 | printk("IBM MCA SCSI: Abort finished with success.\n"); | |
2085 | #endif | |
2086 | return SUCCESS; | |
2087 | } else { | |
2088 | cmd->result |= DID_NO_CONNECT << 16; | |
2089 | if (cmd->scsi_done) | |
2090 | (cmd->scsi_done) (cmd); | |
67b2009a | 2091 | ld(shpnt)[ldn].cmd = NULL; |
1da177e4 LT |
2092 | #ifdef IM_DEBUG_PROBE |
2093 | printk("IBM MCA SCSI: Abort failed.\n"); | |
2094 | #endif | |
2095 | return FAILED; | |
2096 | } | |
2097 | } | |
2098 | ||
8fa728a2 JG |
2099 | static int ibmmca_abort(Scsi_Cmnd * cmd) |
2100 | { | |
2101 | struct Scsi_Host *shpnt = cmd->device->host; | |
2102 | int rc; | |
2103 | ||
2104 | spin_lock_irq(shpnt->host_lock); | |
2105 | rc = __ibmmca_abort(cmd); | |
2106 | spin_unlock_irq(shpnt->host_lock); | |
2107 | ||
2108 | return rc; | |
2109 | } | |
2110 | ||
df0ae249 | 2111 | static int __ibmmca_host_reset(Scsi_Cmnd * cmd) |
1da177e4 LT |
2112 | { |
2113 | struct Scsi_Host *shpnt; | |
2114 | Scsi_Cmnd *cmd_aid; | |
2115 | int ticks, i; | |
1da177e4 LT |
2116 | unsigned long imm_command; |
2117 | ||
125e1874 | 2118 | BUG_ON(cmd == NULL); |
1da177e4 LT |
2119 | |
2120 | ticks = IM_RESET_DELAY * HZ; | |
2121 | shpnt = cmd->device->host; | |
1da177e4 | 2122 | |
67b2009a | 2123 | if (local_checking_phase_flag(shpnt)) { |
1da177e4 LT |
2124 | printk(KERN_WARNING "IBM MCA SCSI: unable to reset while checking devices.\n"); |
2125 | return FAILED; | |
2126 | } | |
2127 | ||
2128 | /* issue reset immediate command to subsystem, and wait for interrupt */ | |
2129 | printk("IBM MCA SCSI: resetting all devices.\n"); | |
67b2009a JB |
2130 | reset_status(shpnt) = IM_RESET_IN_PROGRESS; |
2131 | last_scsi_command(shpnt)[0xf] = IM_RESET_IMM_CMD; | |
2132 | last_scsi_type(shpnt)[0xf] = IM_IMM_CMD; | |
2133 | imm_command = inl(IM_CMD_REG(shpnt)); | |
1da177e4 LT |
2134 | imm_command &= (unsigned long) (0xffff0000); /* mask reserved stuff */ |
2135 | imm_command |= (unsigned long) (IM_RESET_IMM_CMD); | |
2136 | /* must wait for attention reg not busy */ | |
2137 | while (1) { | |
67b2009a | 2138 | if (!(inb(IM_STAT_REG(shpnt)) & IM_BUSY)) |
1da177e4 LT |
2139 | break; |
2140 | spin_unlock_irq(shpnt->host_lock); | |
2141 | yield(); | |
2142 | spin_lock_irq(shpnt->host_lock); | |
2143 | } | |
2144 | /*write registers and enable system interrupts */ | |
67b2009a JB |
2145 | outl(imm_command, IM_CMD_REG(shpnt)); |
2146 | outb(IM_IMM_CMD | 0xf, IM_ATTN_REG(shpnt)); | |
1da177e4 LT |
2147 | /* wait for interrupt finished or intr_stat register to be set, as the |
2148 | * interrupt will not be executed, while we are in here! */ | |
2149 | ||
2150 | /* FIXME: This is really really icky we so want a sleeping version of this ! */ | |
67b2009a | 2151 | while (reset_status(shpnt) == IM_RESET_IN_PROGRESS && --ticks && ((inb(IM_INTR_REG(shpnt)) & 0x8f) != 0x8f)) { |
1da177e4 LT |
2152 | udelay((1 + 999 / HZ) * 1000); |
2153 | barrier(); | |
2154 | } | |
2155 | /* if reset did not complete, just return an error */ | |
2156 | if (!ticks) { | |
2157 | printk(KERN_ERR "IBM MCA SCSI: reset did not complete within %d seconds.\n", IM_RESET_DELAY); | |
67b2009a | 2158 | reset_status(shpnt) = IM_RESET_FINISHED_FAIL; |
1da177e4 LT |
2159 | return FAILED; |
2160 | } | |
2161 | ||
67b2009a | 2162 | if ((inb(IM_INTR_REG(shpnt)) & 0x8f) == 0x8f) { |
1da177e4 | 2163 | /* analysis done by this routine and not by the intr-routine */ |
67b2009a JB |
2164 | if (inb(IM_INTR_REG(shpnt)) == 0xaf) |
2165 | reset_status(shpnt) = IM_RESET_FINISHED_OK_NO_INT; | |
2166 | else if (inb(IM_INTR_REG(shpnt)) == 0xcf) | |
2167 | reset_status(shpnt) = IM_RESET_FINISHED_FAIL; | |
1da177e4 | 2168 | else /* failed, 4get it */ |
67b2009a JB |
2169 | reset_status(shpnt) = IM_RESET_NOT_IN_PROGRESS_NO_INT; |
2170 | outb(IM_EOI | 0xf, IM_ATTN_REG(shpnt)); | |
1da177e4 LT |
2171 | } |
2172 | ||
2173 | /* if reset failed, just return an error */ | |
67b2009a | 2174 | if (reset_status(shpnt) == IM_RESET_FINISHED_FAIL) { |
1da177e4 LT |
2175 | printk(KERN_ERR "IBM MCA SCSI: reset failed.\n"); |
2176 | return FAILED; | |
2177 | } | |
2178 | ||
2179 | /* so reset finished ok - call outstanding done's, and return success */ | |
2180 | printk(KERN_INFO "IBM MCA SCSI: Reset successfully completed.\n"); | |
2181 | for (i = 0; i < MAX_LOG_DEV; i++) { | |
67b2009a | 2182 | cmd_aid = ld(shpnt)[i].cmd; |
1da177e4 | 2183 | if (cmd_aid && cmd_aid->scsi_done) { |
67b2009a | 2184 | ld(shpnt)[i].cmd = NULL; |
1da177e4 LT |
2185 | cmd_aid->result = DID_RESET << 16; |
2186 | } | |
2187 | } | |
2188 | return SUCCESS; | |
2189 | } | |
2190 | ||
df0ae249 JG |
2191 | static int ibmmca_host_reset(Scsi_Cmnd * cmd) |
2192 | { | |
2193 | struct Scsi_Host *shpnt = cmd->device->host; | |
2194 | int rc; | |
2195 | ||
2196 | spin_lock_irq(shpnt->host_lock); | |
2197 | rc = __ibmmca_host_reset(cmd); | |
2198 | spin_unlock_irq(shpnt->host_lock); | |
2199 | ||
2200 | return rc; | |
2201 | } | |
2202 | ||
1da177e4 LT |
2203 | static int ibmmca_biosparam(struct scsi_device *sdev, struct block_device *bdev, sector_t capacity, int *info) |
2204 | { | |
2205 | int size = capacity; | |
2206 | info[0] = 64; | |
2207 | info[1] = 32; | |
2208 | info[2] = size / (info[0] * info[1]); | |
2209 | if (info[2] >= 1024) { | |
2210 | info[0] = 128; | |
2211 | info[1] = 63; | |
2212 | info[2] = size / (info[0] * info[1]); | |
2213 | if (info[2] >= 1024) { | |
2214 | info[0] = 255; | |
2215 | info[1] = 63; | |
2216 | info[2] = size / (info[0] * info[1]); | |
2217 | if (info[2] >= 1024) | |
2218 | info[2] = 1023; | |
2219 | } | |
2220 | } | |
2221 | return 0; | |
2222 | } | |
2223 | ||
2224 | /* calculate percentage of total accesses on a ldn */ | |
67b2009a | 2225 | static int ldn_access_load(struct Scsi_Host *shpnt, int ldn) |
1da177e4 | 2226 | { |
67b2009a | 2227 | if (IBM_DS(shpnt).total_accesses == 0) |
1da177e4 | 2228 | return (0); |
67b2009a | 2229 | if (IBM_DS(shpnt).ldn_access[ldn] == 0) |
1da177e4 | 2230 | return (0); |
67b2009a | 2231 | return (IBM_DS(shpnt).ldn_access[ldn] * 100) / IBM_DS(shpnt).total_accesses; |
1da177e4 LT |
2232 | } |
2233 | ||
2234 | /* calculate total amount of r/w-accesses */ | |
67b2009a | 2235 | static int ldn_access_total_read_write(struct Scsi_Host *shpnt) |
1da177e4 LT |
2236 | { |
2237 | int a; | |
2238 | int i; | |
2239 | ||
2240 | a = 0; | |
2241 | for (i = 0; i <= MAX_LOG_DEV; i++) | |
67b2009a | 2242 | a += IBM_DS(shpnt).ldn_read_access[i] + IBM_DS(shpnt).ldn_write_access[i]; |
1da177e4 LT |
2243 | return (a); |
2244 | } | |
2245 | ||
67b2009a | 2246 | static int ldn_access_total_inquiry(struct Scsi_Host *shpnt) |
1da177e4 LT |
2247 | { |
2248 | int a; | |
2249 | int i; | |
2250 | ||
2251 | a = 0; | |
2252 | for (i = 0; i <= MAX_LOG_DEV; i++) | |
67b2009a | 2253 | a += IBM_DS(shpnt).ldn_inquiry_access[i]; |
1da177e4 LT |
2254 | return (a); |
2255 | } | |
2256 | ||
67b2009a | 2257 | static int ldn_access_total_modeselect(struct Scsi_Host *shpnt) |
1da177e4 LT |
2258 | { |
2259 | int a; | |
2260 | int i; | |
2261 | ||
2262 | a = 0; | |
2263 | for (i = 0; i <= MAX_LOG_DEV; i++) | |
67b2009a | 2264 | a += IBM_DS(shpnt).ldn_modeselect_access[i]; |
1da177e4 LT |
2265 | return (a); |
2266 | } | |
2267 | ||
2268 | /* routine to display info in the proc-fs-structure (a deluxe feature) */ | |
2269 | static int ibmmca_proc_info(struct Scsi_Host *shpnt, char *buffer, char **start, off_t offset, int length, int inout) | |
2270 | { | |
2271 | int len = 0; | |
67b2009a | 2272 | int i, id, lun; |
1da177e4 LT |
2273 | unsigned long flags; |
2274 | int max_pun; | |
2275 | ||
1da177e4 | 2276 | |
67b2009a JB |
2277 | spin_lock_irqsave(shpnt->host_lock, flags); /* Check it */ |
2278 | ||
2279 | max_pun = subsystem_maxid(shpnt); | |
1da177e4 LT |
2280 | |
2281 | len += sprintf(buffer + len, "\n IBM-SCSI-Subsystem-Linux-Driver, Version %s\n\n\n", IBMMCA_SCSI_DRIVER_VERSION); | |
2282 | len += sprintf(buffer + len, " SCSI Access-Statistics:\n"); | |
2283 | len += sprintf(buffer + len, " Device Scanning Order....: %s\n", (ibm_ansi_order) ? "IBM/ANSI" : "New Industry Standard"); | |
2284 | #ifdef CONFIG_SCSI_MULTI_LUN | |
2285 | len += sprintf(buffer + len, " Multiple LUN probing.....: Yes\n"); | |
2286 | #else | |
2287 | len += sprintf(buffer + len, " Multiple LUN probing.....: No\n"); | |
2288 | #endif | |
2289 | len += sprintf(buffer + len, " This Hostnumber..........: %d\n", shpnt->host_no); | |
67b2009a | 2290 | len += sprintf(buffer + len, " Base I/O-Port............: 0x%x\n", (unsigned int) (IM_CMD_REG(shpnt))); |
1da177e4 | 2291 | len += sprintf(buffer + len, " (Shared) IRQ.............: %d\n", IM_IRQ); |
67b2009a JB |
2292 | len += sprintf(buffer + len, " Total Interrupts.........: %d\n", IBM_DS(shpnt).total_interrupts); |
2293 | len += sprintf(buffer + len, " Total SCSI Accesses......: %d\n", IBM_DS(shpnt).total_accesses); | |
2294 | len += sprintf(buffer + len, " Total short SCBs.........: %d\n", IBM_DS(shpnt).scbs); | |
2295 | len += sprintf(buffer + len, " Total long SCBs..........: %d\n", IBM_DS(shpnt).long_scbs); | |
2296 | len += sprintf(buffer + len, " Total SCSI READ/WRITE..: %d\n", ldn_access_total_read_write(shpnt)); | |
2297 | len += sprintf(buffer + len, " Total SCSI Inquiries...: %d\n", ldn_access_total_inquiry(shpnt)); | |
2298 | len += sprintf(buffer + len, " Total SCSI Modeselects.: %d\n", ldn_access_total_modeselect(shpnt)); | |
2299 | len += sprintf(buffer + len, " Total SCSI other cmds..: %d\n", IBM_DS(shpnt).total_accesses - ldn_access_total_read_write(shpnt) | |
2300 | - ldn_access_total_modeselect(shpnt) | |
2301 | - ldn_access_total_inquiry(shpnt)); | |
2302 | len += sprintf(buffer + len, " Total SCSI command fails.: %d\n\n", IBM_DS(shpnt).total_errors); | |
1da177e4 LT |
2303 | len += sprintf(buffer + len, " Logical-Device-Number (LDN) Access-Statistics:\n"); |
2304 | len += sprintf(buffer + len, " LDN | Accesses [%%] | READ | WRITE | ASSIGNMENTS\n"); | |
2305 | len += sprintf(buffer + len, " -----|--------------|-----------|-----------|--------------\n"); | |
2306 | for (i = 0; i <= MAX_LOG_DEV; i++) | |
67b2009a | 2307 | 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 |
2308 | len += sprintf(buffer + len, " -----------------------------------------------------------\n\n"); |
2309 | len += sprintf(buffer + len, " Dynamical-LDN-Assignment-Statistics:\n"); | |
67b2009a JB |
2310 | len += sprintf(buffer + len, " Number of physical SCSI-devices..: %d (+ Adapter)\n", IBM_DS(shpnt).total_scsi_devices); |
2311 | len += sprintf(buffer + len, " Dynamical Assignment necessary...: %s\n", IBM_DS(shpnt).dyn_flag ? "Yes" : "No "); | |
2312 | len += sprintf(buffer + len, " Next LDN to be assigned..........: 0x%x\n", next_ldn(shpnt)); | |
2313 | len += sprintf(buffer + len, " Dynamical assignments done yet...: %d\n", IBM_DS(shpnt).dynamical_assignments); | |
1da177e4 LT |
2314 | len += sprintf(buffer + len, "\n Current SCSI-Device-Mapping:\n"); |
2315 | len += sprintf(buffer + len, " Physical SCSI-Device Map Logical SCSI-Device Map\n"); | |
2316 | 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"); | |
2317 | for (id = 0; id < max_pun; id++) { | |
2318 | len += sprintf(buffer + len, " %2d ", id); | |
2319 | for (lun = 0; lun < 8; lun++) | |
67b2009a | 2320 | len += sprintf(buffer + len, "%2s ", ti_p(get_scsi(shpnt)[id][lun])); |
1da177e4 LT |
2321 | len += sprintf(buffer + len, " %2d ", id); |
2322 | for (lun = 0; lun < 8; lun++) | |
67b2009a | 2323 | len += sprintf(buffer + len, "%2s ", ti_l(get_ldn(shpnt)[id][lun])); |
1da177e4 LT |
2324 | len += sprintf(buffer + len, "\n"); |
2325 | } | |
2326 | ||
2327 | len += sprintf(buffer + len, "(A = IBM-Subsystem, D = Harddisk, T = Tapedrive, P = Processor, W = WORM,\n"); | |
2328 | len += sprintf(buffer + len, " R = CD-ROM, S = Scanner, M = MO-Drive, C = Medium-Changer, + = unprovided LUN,\n"); | |
2329 | len += sprintf(buffer + len, " - = nothing found, nothing assigned or unprobed LUN)\n\n"); | |
2330 | ||
2331 | *start = buffer + offset; | |
2332 | len -= offset; | |
2333 | if (len > length) | |
2334 | len = length; | |
2335 | spin_unlock_irqrestore(shpnt->host_lock, flags); | |
2336 | return len; | |
2337 | } | |
2338 | ||
2339 | static int option_setup(char *str) | |
2340 | { | |
2341 | int ints[IM_MAX_HOSTS]; | |
2342 | char *cur = str; | |
2343 | int i = 1; | |
2344 | ||
2345 | while (cur && isdigit(*cur) && i <= IM_MAX_HOSTS) { | |
2346 | ints[i++] = simple_strtoul(cur, NULL, 0); | |
2347 | if ((cur = strchr(cur, ',')) != NULL) | |
2348 | cur++; | |
2349 | } | |
2350 | ints[0] = i - 1; | |
2351 | internal_ibmmca_scsi_setup(cur, ints); | |
9b41046c | 2352 | return 1; |
1da177e4 LT |
2353 | } |
2354 | ||
2355 | __setup("ibmmcascsi=", option_setup); | |
2356 | ||
67b2009a JB |
2357 | static struct mca_driver ibmmca_driver = { |
2358 | .id_table = ibmmca_id_table, | |
2359 | .driver = { | |
2360 | .name = "ibmmca", | |
2361 | .bus = &mca_bus_type, | |
2362 | .probe = ibmmca_probe, | |
2363 | .remove = __devexit_p(ibmmca_remove), | |
2364 | }, | |
1da177e4 | 2365 | }; |
67b2009a JB |
2366 | |
2367 | static int __init ibmmca_init(void) | |
2368 | { | |
2369 | #ifdef MODULE | |
2370 | /* If the driver is run as module, read from conf.modules or cmd-line */ | |
2371 | if (boot_options) | |
2372 | option_setup(boot_options); | |
2373 | #endif | |
2374 | ||
2375 | return mca_register_driver_integrated(&ibmmca_driver, MCA_INTEGSCSI); | |
2376 | } | |
2377 | ||
2378 | static void __exit ibmmca_exit(void) | |
2379 | { | |
2380 | mca_unregister_driver(&ibmmca_driver); | |
2381 | } | |
2382 | ||
2383 | module_init(ibmmca_init); | |
2384 | module_exit(ibmmca_exit); |