cae3262a29570f19f0ef97b5f9e799394a63618a
[linux-2.6.git] / drivers / scsi / ips.c
1 /*****************************************************************************/
2 /* ips.c -- driver for the Adaptec / IBM ServeRAID controller                */
3 /*                                                                           */
4 /* Written By: Keith Mitchell, IBM Corporation                               */
5 /*             Jack Hammer, Adaptec, Inc.                                    */
6 /*             David Jeffery, Adaptec, Inc.                                  */
7 /*                                                                           */
8 /* Copyright (C) 2000 IBM Corporation                                        */
9 /* Copyright (C) 2002,2003 Adaptec, Inc.                                     */
10 /*                                                                           */
11 /* This program is free software; you can redistribute it and/or modify      */
12 /* it under the terms of the GNU General Public License as published by      */
13 /* the Free Software Foundation; either version 2 of the License, or         */
14 /* (at your option) any later version.                                       */
15 /*                                                                           */
16 /* This program is distributed in the hope that it will be useful,           */
17 /* but WITHOUT ANY WARRANTY; without even the implied warranty of            */
18 /* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the             */
19 /* GNU General Public License for more details.                              */
20 /*                                                                           */
21 /* NO WARRANTY                                                               */
22 /* THE PROGRAM IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR        */
23 /* CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED INCLUDING, WITHOUT      */
24 /* LIMITATION, ANY WARRANTIES OR CONDITIONS OF TITLE, NON-INFRINGEMENT,      */
25 /* MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Each Recipient is    */
26 /* solely responsible for determining the appropriateness of using and       */
27 /* distributing the Program and assumes all risks associated with its        */
28 /* exercise of rights under this Agreement, including but not limited to     */
29 /* the risks and costs of program errors, damage to or loss of data,         */
30 /* programs or equipment, and unavailability or interruption of operations.  */
31 /*                                                                           */
32 /* DISCLAIMER OF LIABILITY                                                   */
33 /* NEITHER RECIPIENT NOR ANY CONTRIBUTORS SHALL HAVE ANY LIABILITY FOR ANY   */
34 /* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL        */
35 /* DAMAGES (INCLUDING WITHOUT LIMITATION LOST PROFITS), HOWEVER CAUSED AND   */
36 /* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR     */
37 /* TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE    */
38 /* USE OR DISTRIBUTION OF THE PROGRAM OR THE EXERCISE OF ANY RIGHTS GRANTED  */
39 /* HEREUNDER, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES             */
40 /*                                                                           */
41 /* You should have received a copy of the GNU General Public License         */
42 /* along with this program; if not, write to the Free Software               */
43 /* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA */
44 /*                                                                           */
45 /* Bugs/Comments/Suggestions about this driver should be mailed to:          */
46 /*      ipslinux@adaptec.com                                                 */
47 /*                                                                           */
48 /* For system support issues, contact your local IBM Customer support.       */
49 /* Directions to find IBM Customer Support for each country can be found at: */
50 /*      http://www.ibm.com/planetwide/                                       */
51 /*                                                                           */
52 /*****************************************************************************/
53
54 /*****************************************************************************/
55 /* Change Log                                                                */
56 /*                                                                           */
57 /* 0.99.02  - Breakup commands that are bigger than 8 * the stripe size      */
58 /* 0.99.03  - Make interrupt routine handle all completed request on the     */
59 /*            adapter not just the first one                                 */
60 /*          - Make sure passthru commands get woken up if we run out of      */
61 /*            SCBs                                                           */
62 /*          - Send all of the commands on the queue at once rather than      */
63 /*            one at a time since the card will support it.                  */
64 /* 0.99.04  - Fix race condition in the passthru mechanism -- this required  */
65 /*            the interface to the utilities to change                       */
66 /*          - Fix error recovery code                                        */
67 /* 0.99.05  - Fix an oops when we get certain passthru commands              */
68 /* 1.00.00  - Initial Public Release                                         */
69 /*            Functionally equivalent to 0.99.05                             */
70 /* 3.60.00  - Bump max commands to 128 for use with firmware 3.60            */
71 /*          - Change version to 3.60 to coincide with release numbering.     */
72 /* 3.60.01  - Remove bogus error check in passthru routine                   */
73 /* 3.60.02  - Make DCDB direction based on lookup table                      */
74 /*          - Only allow one DCDB command to a SCSI ID at a time             */
75 /* 4.00.00  - Add support for ServeRAID 4                                    */
76 /* 4.00.01  - Add support for First Failure Data Capture                     */
77 /* 4.00.02  - Fix problem with PT DCDB with no buffer                        */
78 /* 4.00.03  - Add alternative passthru interface                             */
79 /*          - Add ability to flash BIOS                                      */
80 /* 4.00.04  - Rename structures/constants to be prefixed with IPS_           */
81 /* 4.00.05  - Remove wish_block from init routine                            */
82 /*          - Use linux/spinlock.h instead of asm/spinlock.h for kernels     */
83 /*            2.3.18 and later                                               */
84 /*          - Sync with other changes from the 2.3 kernels                   */
85 /* 4.00.06  - Fix timeout with initial FFDC command                          */
86 /* 4.00.06a - Port to 2.4 (trivial) -- Christoph Hellwig <hch@infradead.org> */
87 /* 4.10.00  - Add support for ServeRAID 4M/4L                                */
88 /* 4.10.13  - Fix for dynamic unload and proc file system                    */
89 /* 4.20.03  - Rename version to coincide with new release schedules          */
90 /*            Performance fixes                                              */
91 /*            Fix truncation of /proc files with cat                         */
92 /*            Merge in changes through kernel 2.4.0test1ac21                 */
93 /* 4.20.13  - Fix some failure cases / reset code                            */
94 /*          - Hook into the reboot_notifier to flush the controller cache    */
95 /* 4.50.01  - Fix problem when there is a hole in logical drive numbering    */
96 /* 4.70.09  - Use a Common ( Large Buffer ) for Flashing from the JCRM CD    */
97 /*          - Add IPSSEND Flash Support                                      */
98 /*          - Set Sense Data for Unknown SCSI Command                        */
99 /*          - Use Slot Number from NVRAM Page 5                              */
100 /*          - Restore caller's DCDB Structure                                */
101 /* 4.70.12  - Corrective actions for bad controller ( during initialization )*/
102 /* 4.70.13  - Don't Send CDB's if we already know the device is not present  */
103 /*          - Don't release HA Lock in ips_next() until SC taken off queue   */
104 /*          - Unregister SCSI device in ips_release()                        */
105 /* 4.70.15  - Fix Breakup for very large ( non-SG ) requests in ips_done()   */
106 /* 4.71.00  - Change all memory allocations to not use GFP_DMA flag          */
107 /*            Code Clean-Up for 2.4.x kernel                                 */
108 /* 4.72.00  - Allow for a Scatter-Gather Element to exceed MAX_XFER Size     */
109 /* 4.72.01  - I/O Mapped Memory release ( so "insmod ips" does not Fail )    */
110 /*          - Don't Issue Internal FFDC Command if there are Active Commands */
111 /*          - Close Window for getting too many IOCTL's active               */
112 /* 4.80.00  - Make ia64 Safe                                                 */
113 /* 4.80.04  - Eliminate calls to strtok() if 2.4.x or greater                */
114 /*          - Adjustments to Device Queue Depth                              */
115 /* 4.80.14  - Take all semaphores off stack                                  */
116 /*          - Clean Up New_IOCTL path                                        */
117 /* 4.80.20  - Set max_sectors in Scsi_Host structure ( if >= 2.4.7 kernel )  */
118 /*          - 5 second delay needed after resetting an i960 adapter          */
119 /* 4.80.26  - Clean up potential code problems ( Arjan's recommendations )   */
120 /* 4.90.01  - Version Matching for FirmWare, BIOS, and Driver                */
121 /* 4.90.05  - Use New PCI Architecture to facilitate Hot Plug Development    */
122 /* 4.90.08  - Increase Delays in Flashing ( Trombone Only - 4H )             */
123 /* 4.90.08  - Data Corruption if First Scatter Gather Element is > 64K       */
124 /* 4.90.11  - Don't actually RESET unless it's physically required           */
125 /*          - Remove unused compile options                                  */
126 /* 5.00.01  - Sarasota ( 5i ) adapters must always be scanned first          */
127 /*          - Get rid on IOCTL_NEW_COMMAND code                              */
128 /*          - Add Extended DCDB Commands for Tape Support in 5I              */
129 /* 5.10.12  - use pci_dma interfaces, update for 2.5 kernel changes          */
130 /* 5.10.15  - remove unused code (sem, macros, etc.)                         */
131 /* 5.30.00  - use __devexit_p()                                              */
132 /* 6.00.00  - Add 6x Adapters and Battery Flash                              */
133 /* 6.10.00  - Remove 1G Addressing Limitations                               */
134 /* 6.11.xx  - Get VersionInfo buffer off the stack !              DDTS 60401 */
135 /* 6.11.xx  - Make Logical Drive Info structure safe for DMA      DDTS 60639 */
136 /* 7.10.18  - Add highmem_io flag in SCSI Templete for 2.4 kernels           */
137 /*          - Fix path/name for scsi_hosts.h include for 2.6 kernels         */
138 /*          - Fix sort order of 7k                                           */
139 /*          - Remove 3 unused "inline" functions                             */
140 /* 7.12.xx  - Use STATIC functions whereever possible                        */
141 /*          - Clean up deprecated MODULE_PARM calls                          */
142 /* 7.12.05  - Remove Version Matching per IBM request                        */
143 /*****************************************************************************/
144
145 /*
146  * Conditional Compilation directives for this driver:
147  *
148  * IPS_DEBUG            - Turn on debugging info
149  *
150  * Parameters:
151  *
152  * debug:<number>       - Set debug level to <number>
153  *                        NOTE: only works when IPS_DEBUG compile directive is used.
154  *       1              - Normal debug messages
155  *       2              - Verbose debug messages
156  *       11             - Method trace (non interrupt)
157  *       12             - Method trace (includes interrupt)
158  *
159  * noi2o                - Don't use I2O Queues (ServeRAID 4 only)
160  * nommap               - Don't use memory mapped I/O
161  * ioctlsize            - Initial size of the IOCTL buffer
162  */
163
164 #include <asm/io.h>
165 #include <asm/byteorder.h>
166 #include <asm/page.h>
167 #include <linux/stddef.h>
168 #include <linux/version.h>
169 #include <linux/string.h>
170 #include <linux/errno.h>
171 #include <linux/kernel.h>
172 #include <linux/ioport.h>
173 #include <linux/slab.h>
174 #include <linux/delay.h>
175 #include <linux/pci.h>
176 #include <linux/proc_fs.h>
177 #include <linux/reboot.h>
178 #include <linux/interrupt.h>
179
180 #include <linux/blkdev.h>
181 #include <linux/types.h>
182
183 #include <scsi/sg.h>
184
185 #include "scsi.h"
186
187 #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,5,0)
188 #include "hosts.h"
189 #else
190 #include <scsi/scsi_host.h>
191 #endif
192
193 #include "ips.h"
194
195 #include <linux/module.h>
196
197 #include <linux/stat.h>
198 #include <linux/config.h>
199
200 #include <linux/spinlock.h>
201 #include <linux/init.h>
202
203 #include <linux/smp.h>
204
205 #ifdef MODULE
206 static char *ips = NULL;
207 module_param(ips, charp, 0);
208 #endif
209
210 /*
211  * DRIVER_VER
212  */
213 #define IPS_VERSION_HIGH        "7.12"
214 #define IPS_VERSION_LOW         ".05 "
215
216 #if !defined(__i386__) && !defined(__ia64__) && !defined(__x86_64__)
217 #warning "This driver has only been tested on the x86/ia64/x86_64 platforms"
218 #endif
219
220 #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,5,0)
221 #include <linux/blk.h>
222 #include "sd.h"
223 #define IPS_LOCK_SAVE(lock,flags) spin_lock_irqsave(&io_request_lock,flags)
224 #define IPS_UNLOCK_RESTORE(lock,flags) spin_unlock_irqrestore(&io_request_lock,flags)
225 #ifndef __devexit_p
226 #define __devexit_p(x) x
227 #endif
228 #else
229 #define IPS_LOCK_SAVE(lock,flags) do{spin_lock(lock);(void)flags;}while(0)
230 #define IPS_UNLOCK_RESTORE(lock,flags) do{spin_unlock(lock);(void)flags;}while(0)
231 #endif
232
233 #define IPS_DMA_DIR(scb) ((!scb->scsi_cmd || ips_is_passthru(scb->scsi_cmd) || \
234                          DMA_NONE == scb->scsi_cmd->sc_data_direction) ? \
235                          PCI_DMA_BIDIRECTIONAL : \
236                          scb->scsi_cmd->sc_data_direction)
237
238 #ifdef IPS_DEBUG
239 #define METHOD_TRACE(s, i)    if (ips_debug >= (i+10)) printk(KERN_NOTICE s "\n");
240 #define DEBUG(i, s)           if (ips_debug >= i) printk(KERN_NOTICE s "\n");
241 #define DEBUG_VAR(i, s, v...) if (ips_debug >= i) printk(KERN_NOTICE s "\n", v);
242 #else
243 #define METHOD_TRACE(s, i)
244 #define DEBUG(i, s)
245 #define DEBUG_VAR(i, s, v...)
246 #endif
247
248 /*
249  * Function prototypes
250  */
251 static int ips_detect(Scsi_Host_Template *);
252 static int ips_release(struct Scsi_Host *);
253 static int ips_eh_abort(Scsi_Cmnd *);
254 static int ips_eh_reset(Scsi_Cmnd *);
255 static int ips_queue(Scsi_Cmnd *, void (*)(Scsi_Cmnd *));
256 static const char *ips_info(struct Scsi_Host *);
257 static irqreturn_t do_ipsintr(int, void *, struct pt_regs *);
258 static int ips_hainit(ips_ha_t *);
259 static int ips_map_status(ips_ha_t *, ips_scb_t *, ips_stat_t *);
260 static int ips_send_wait(ips_ha_t *, ips_scb_t *, int, int);
261 static int ips_send_cmd(ips_ha_t *, ips_scb_t *);
262 static int ips_online(ips_ha_t *, ips_scb_t *);
263 static int ips_inquiry(ips_ha_t *, ips_scb_t *);
264 static int ips_rdcap(ips_ha_t *, ips_scb_t *);
265 static int ips_msense(ips_ha_t *, ips_scb_t *);
266 static int ips_reqsen(ips_ha_t *, ips_scb_t *);
267 static int ips_deallocatescbs(ips_ha_t *, int);
268 static int ips_allocatescbs(ips_ha_t *);
269 static int ips_reset_copperhead(ips_ha_t *);
270 static int ips_reset_copperhead_memio(ips_ha_t *);
271 static int ips_reset_morpheus(ips_ha_t *);
272 static int ips_issue_copperhead(ips_ha_t *, ips_scb_t *);
273 static int ips_issue_copperhead_memio(ips_ha_t *, ips_scb_t *);
274 static int ips_issue_i2o(ips_ha_t *, ips_scb_t *);
275 static int ips_issue_i2o_memio(ips_ha_t *, ips_scb_t *);
276 static int ips_isintr_copperhead(ips_ha_t *);
277 static int ips_isintr_copperhead_memio(ips_ha_t *);
278 static int ips_isintr_morpheus(ips_ha_t *);
279 static int ips_wait(ips_ha_t *, int, int);
280 static int ips_write_driver_status(ips_ha_t *, int);
281 static int ips_read_adapter_status(ips_ha_t *, int);
282 static int ips_read_subsystem_parameters(ips_ha_t *, int);
283 static int ips_read_config(ips_ha_t *, int);
284 static int ips_clear_adapter(ips_ha_t *, int);
285 static int ips_readwrite_page5(ips_ha_t *, int, int);
286 static int ips_init_copperhead(ips_ha_t *);
287 static int ips_init_copperhead_memio(ips_ha_t *);
288 static int ips_init_morpheus(ips_ha_t *);
289 static int ips_isinit_copperhead(ips_ha_t *);
290 static int ips_isinit_copperhead_memio(ips_ha_t *);
291 static int ips_isinit_morpheus(ips_ha_t *);
292 static int ips_erase_bios(ips_ha_t *);
293 static int ips_program_bios(ips_ha_t *, char *, uint32_t, uint32_t);
294 static int ips_verify_bios(ips_ha_t *, char *, uint32_t, uint32_t);
295 static int ips_erase_bios_memio(ips_ha_t *);
296 static int ips_program_bios_memio(ips_ha_t *, char *, uint32_t, uint32_t);
297 static int ips_verify_bios_memio(ips_ha_t *, char *, uint32_t, uint32_t);
298 static int ips_flash_copperhead(ips_ha_t *, ips_passthru_t *, ips_scb_t *);
299 static int ips_flash_bios(ips_ha_t *, ips_passthru_t *, ips_scb_t *);
300 static int ips_flash_firmware(ips_ha_t *, ips_passthru_t *, ips_scb_t *);
301 static void ips_free_flash_copperhead(ips_ha_t * ha);
302 static void ips_get_bios_version(ips_ha_t *, int);
303 static void ips_identify_controller(ips_ha_t *);
304 static void ips_chkstatus(ips_ha_t *, IPS_STATUS *);
305 static void ips_enable_int_copperhead(ips_ha_t *);
306 static void ips_enable_int_copperhead_memio(ips_ha_t *);
307 static void ips_enable_int_morpheus(ips_ha_t *);
308 static int ips_intr_copperhead(ips_ha_t *);
309 static int ips_intr_morpheus(ips_ha_t *);
310 static void ips_next(ips_ha_t *, int);
311 static void ipsintr_blocking(ips_ha_t *, struct ips_scb *);
312 static void ipsintr_done(ips_ha_t *, struct ips_scb *);
313 static void ips_done(ips_ha_t *, ips_scb_t *);
314 static void ips_free(ips_ha_t *);
315 static void ips_init_scb(ips_ha_t *, ips_scb_t *);
316 static void ips_freescb(ips_ha_t *, ips_scb_t *);
317 static void ips_setup_funclist(ips_ha_t *);
318 static void ips_statinit(ips_ha_t *);
319 static void ips_statinit_memio(ips_ha_t *);
320 static void ips_fix_ffdc_time(ips_ha_t *, ips_scb_t *, time_t);
321 static void ips_ffdc_reset(ips_ha_t *, int);
322 static void ips_ffdc_time(ips_ha_t *);
323 static uint32_t ips_statupd_copperhead(ips_ha_t *);
324 static uint32_t ips_statupd_copperhead_memio(ips_ha_t *);
325 static uint32_t ips_statupd_morpheus(ips_ha_t *);
326 static ips_scb_t *ips_getscb(ips_ha_t *);
327 static void ips_putq_scb_head(ips_scb_queue_t *, ips_scb_t *);
328 static void ips_putq_wait_tail(ips_wait_queue_t *, Scsi_Cmnd *);
329 static void ips_putq_copp_tail(ips_copp_queue_t *,
330                                       ips_copp_wait_item_t *);
331 static ips_scb_t *ips_removeq_scb_head(ips_scb_queue_t *);
332 static ips_scb_t *ips_removeq_scb(ips_scb_queue_t *, ips_scb_t *);
333 static Scsi_Cmnd *ips_removeq_wait_head(ips_wait_queue_t *);
334 static Scsi_Cmnd *ips_removeq_wait(ips_wait_queue_t *, Scsi_Cmnd *);
335 static ips_copp_wait_item_t *ips_removeq_copp(ips_copp_queue_t *,
336                                                      ips_copp_wait_item_t *);
337 static ips_copp_wait_item_t *ips_removeq_copp_head(ips_copp_queue_t *);
338
339 static int ips_is_passthru(Scsi_Cmnd *);
340 static int ips_make_passthru(ips_ha_t *, Scsi_Cmnd *, ips_scb_t *, int);
341 static int ips_usrcmd(ips_ha_t *, ips_passthru_t *, ips_scb_t *);
342 static void ips_cleanup_passthru(ips_ha_t *, ips_scb_t *);
343 static void ips_scmd_buf_write(Scsi_Cmnd * scmd, void *data,
344                                unsigned int count);
345 static void ips_scmd_buf_read(Scsi_Cmnd * scmd, void *data, unsigned int count);
346
347 static int ips_proc_info(struct Scsi_Host *, char *, char **, off_t, int, int);
348 static int ips_host_info(ips_ha_t *, char *, off_t, int);
349 static void copy_mem_info(IPS_INFOSTR *, char *, int);
350 static int copy_info(IPS_INFOSTR *, char *, ...);
351 static int ips_abort_init(ips_ha_t * ha, int index);
352 static int ips_init_phase2(int index);
353
354 static int ips_init_phase1(struct pci_dev *pci_dev, int *indexPtr);
355 static int ips_register_scsi(int index);
356
357 static int  ips_poll_for_flush_complete(ips_ha_t * ha);
358 static void ips_flush_and_reset(ips_ha_t *ha);
359
360 /*
361  * global variables
362  */
363 static const char ips_name[] = "ips";
364 static struct Scsi_Host *ips_sh[IPS_MAX_ADAPTERS];      /* Array of host controller structures */
365 static ips_ha_t *ips_ha[IPS_MAX_ADAPTERS];      /* Array of HA structures */
366 static unsigned int ips_next_controller;
367 static unsigned int ips_num_controllers;
368 static unsigned int ips_released_controllers;
369 static int ips_hotplug;
370 static int ips_cmd_timeout = 60;
371 static int ips_reset_timeout = 60 * 5;
372 static int ips_force_memio = 1;         /* Always use Memory Mapped I/O    */
373 static int ips_force_i2o = 1;   /* Always use I2O command delivery */
374 static int ips_ioctlsize = IPS_IOCTL_SIZE;      /* Size of the ioctl buffer        */
375 static int ips_cd_boot;                 /* Booting from Manager CD         */
376 static char *ips_FlashData = NULL;      /* CD Boot - Flash Data Buffer      */
377 static dma_addr_t ips_flashbusaddr;
378 static long ips_FlashDataInUse;         /* CD Boot - Flash Data In Use Flag */
379 static uint32_t MaxLiteCmds = 32;       /* Max Active Cmds for a Lite Adapter */
380 static Scsi_Host_Template ips_driver_template = {
381         .detect                 = ips_detect,
382         .release                = ips_release,
383         .info                   = ips_info,
384         .queuecommand           = ips_queue,
385         .eh_abort_handler       = ips_eh_abort,
386         .eh_host_reset_handler  = ips_eh_reset,
387         .proc_name              = "ips",
388 #if LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0)
389         .proc_info              = ips_proc_info,
390         .slave_configure        = ips_slave_configure,
391 #else
392         .proc_info              = ips_proc24_info,
393         .select_queue_depths    = ips_select_queue_depth,
394 #endif
395         .bios_param             = ips_biosparam,
396         .this_id                = -1,
397         .sg_tablesize           = IPS_MAX_SG,
398         .cmd_per_lun            = 3,
399         .use_clustering         = ENABLE_CLUSTERING,
400 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
401         .use_new_eh_code        = 1,
402 #endif
403 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,20)  &&  LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
404     .highmem_io          = 1,   
405 #endif
406 };
407
408
409 /* This table describes all ServeRAID Adapters */
410 static struct  pci_device_id  ips_pci_table[] = {
411         { 0x1014, 0x002E, PCI_ANY_ID, PCI_ANY_ID, 0, 0 },
412         { 0x1014, 0x01BD, PCI_ANY_ID, PCI_ANY_ID, 0, 0 },
413         { 0x9005, 0x0250, PCI_ANY_ID, PCI_ANY_ID, 0, 0 },
414         { 0, }
415 };
416
417 MODULE_DEVICE_TABLE( pci, ips_pci_table );
418
419 static char ips_hot_plug_name[] = "ips";
420    
421 static int __devinit  ips_insert_device(struct pci_dev *pci_dev, const struct pci_device_id *ent);
422 static void __devexit ips_remove_device(struct pci_dev *pci_dev);
423    
424 static struct pci_driver ips_pci_driver = {
425         .name           = ips_hot_plug_name,
426         .id_table       = ips_pci_table,
427         .probe          = ips_insert_device,
428         .remove         = __devexit_p(ips_remove_device),
429 };
430            
431
432 /*
433  * Necessary forward function protoypes
434  */
435 static int ips_halt(struct notifier_block *nb, ulong event, void *buf);
436
437 #define MAX_ADAPTER_NAME 15
438
439 static char ips_adapter_name[][30] = {
440         "ServeRAID",
441         "ServeRAID II",
442         "ServeRAID on motherboard",
443         "ServeRAID on motherboard",
444         "ServeRAID 3H",
445         "ServeRAID 3L",
446         "ServeRAID 4H",
447         "ServeRAID 4M",
448         "ServeRAID 4L",
449         "ServeRAID 4Mx",
450         "ServeRAID 4Lx",
451         "ServeRAID 5i",
452         "ServeRAID 5i",
453         "ServeRAID 6M",
454         "ServeRAID 6i",
455         "ServeRAID 7t",
456         "ServeRAID 7k",
457         "ServeRAID 7M"
458 };
459
460 static struct notifier_block ips_notifier = {
461         ips_halt, NULL, 0
462 };
463
464 /*
465  * Direction table
466  */
467 static char ips_command_direction[] = {
468         IPS_DATA_NONE, IPS_DATA_NONE, IPS_DATA_IN, IPS_DATA_IN, IPS_DATA_OUT,
469         IPS_DATA_IN, IPS_DATA_IN, IPS_DATA_OUT, IPS_DATA_IN, IPS_DATA_UNK,
470         IPS_DATA_OUT, IPS_DATA_OUT, IPS_DATA_UNK, IPS_DATA_UNK, IPS_DATA_UNK,
471         IPS_DATA_IN, IPS_DATA_NONE, IPS_DATA_NONE, IPS_DATA_IN, IPS_DATA_OUT,
472         IPS_DATA_IN, IPS_DATA_OUT, IPS_DATA_NONE, IPS_DATA_NONE, IPS_DATA_OUT,
473         IPS_DATA_NONE, IPS_DATA_IN, IPS_DATA_NONE, IPS_DATA_IN, IPS_DATA_OUT,
474         IPS_DATA_NONE, IPS_DATA_UNK, IPS_DATA_IN, IPS_DATA_UNK, IPS_DATA_IN,
475         IPS_DATA_UNK, IPS_DATA_OUT, IPS_DATA_IN, IPS_DATA_UNK, IPS_DATA_UNK,
476         IPS_DATA_IN, IPS_DATA_IN, IPS_DATA_OUT, IPS_DATA_NONE, IPS_DATA_UNK,
477         IPS_DATA_IN, IPS_DATA_OUT, IPS_DATA_OUT, IPS_DATA_OUT, IPS_DATA_OUT,
478         IPS_DATA_OUT, IPS_DATA_NONE, IPS_DATA_IN, IPS_DATA_NONE, IPS_DATA_NONE,
479         IPS_DATA_IN, IPS_DATA_OUT, IPS_DATA_OUT, IPS_DATA_OUT, IPS_DATA_OUT,
480         IPS_DATA_IN, IPS_DATA_OUT, IPS_DATA_IN, IPS_DATA_OUT, IPS_DATA_OUT,
481         IPS_DATA_OUT, IPS_DATA_IN, IPS_DATA_IN, IPS_DATA_IN, IPS_DATA_NONE,
482         IPS_DATA_UNK, IPS_DATA_NONE, IPS_DATA_NONE, IPS_DATA_NONE, IPS_DATA_UNK,
483         IPS_DATA_NONE, IPS_DATA_OUT, IPS_DATA_IN, IPS_DATA_UNK, IPS_DATA_UNK,
484         IPS_DATA_UNK, IPS_DATA_UNK, IPS_DATA_UNK, IPS_DATA_UNK, IPS_DATA_UNK,
485         IPS_DATA_OUT, IPS_DATA_UNK, IPS_DATA_UNK, IPS_DATA_UNK, IPS_DATA_UNK,
486         IPS_DATA_IN, IPS_DATA_UNK, IPS_DATA_UNK, IPS_DATA_UNK, IPS_DATA_UNK,
487         IPS_DATA_UNK, IPS_DATA_UNK, IPS_DATA_UNK, IPS_DATA_UNK, IPS_DATA_UNK,
488         IPS_DATA_UNK, IPS_DATA_UNK, IPS_DATA_UNK, IPS_DATA_UNK, IPS_DATA_UNK,
489         IPS_DATA_UNK, IPS_DATA_UNK, IPS_DATA_UNK, IPS_DATA_UNK, IPS_DATA_UNK,
490         IPS_DATA_UNK, IPS_DATA_UNK, IPS_DATA_UNK, IPS_DATA_UNK, IPS_DATA_UNK,
491         IPS_DATA_UNK, IPS_DATA_UNK, IPS_DATA_UNK, IPS_DATA_UNK, IPS_DATA_UNK,
492         IPS_DATA_UNK, IPS_DATA_UNK, IPS_DATA_UNK, IPS_DATA_UNK, IPS_DATA_UNK,
493         IPS_DATA_UNK, IPS_DATA_UNK, IPS_DATA_UNK, IPS_DATA_UNK, IPS_DATA_UNK,
494         IPS_DATA_UNK, IPS_DATA_UNK, IPS_DATA_UNK, IPS_DATA_UNK, IPS_DATA_UNK,
495         IPS_DATA_UNK, IPS_DATA_UNK, IPS_DATA_UNK, IPS_DATA_UNK, IPS_DATA_UNK,
496         IPS_DATA_UNK, IPS_DATA_UNK, IPS_DATA_UNK, IPS_DATA_UNK, IPS_DATA_UNK,
497         IPS_DATA_UNK, IPS_DATA_UNK, IPS_DATA_UNK, IPS_DATA_UNK, IPS_DATA_UNK,
498         IPS_DATA_UNK, IPS_DATA_UNK, IPS_DATA_UNK, IPS_DATA_UNK, IPS_DATA_UNK,
499         IPS_DATA_UNK, IPS_DATA_UNK, IPS_DATA_UNK, IPS_DATA_UNK, IPS_DATA_UNK,
500         IPS_DATA_UNK, IPS_DATA_UNK, IPS_DATA_UNK, IPS_DATA_UNK, IPS_DATA_UNK,
501         IPS_DATA_NONE, IPS_DATA_NONE, IPS_DATA_UNK, IPS_DATA_IN, IPS_DATA_NONE,
502         IPS_DATA_OUT, IPS_DATA_UNK, IPS_DATA_NONE, IPS_DATA_UNK, IPS_DATA_OUT,
503         IPS_DATA_OUT, IPS_DATA_OUT, IPS_DATA_OUT, IPS_DATA_OUT, IPS_DATA_NONE,
504         IPS_DATA_UNK, IPS_DATA_IN, IPS_DATA_OUT, IPS_DATA_IN, IPS_DATA_IN,
505         IPS_DATA_UNK, IPS_DATA_UNK, IPS_DATA_UNK, IPS_DATA_UNK, IPS_DATA_UNK,
506         IPS_DATA_UNK, IPS_DATA_UNK, IPS_DATA_UNK, IPS_DATA_UNK, IPS_DATA_UNK,
507         IPS_DATA_UNK, IPS_DATA_UNK, IPS_DATA_UNK, IPS_DATA_UNK, IPS_DATA_UNK,
508         IPS_DATA_UNK, IPS_DATA_UNK, IPS_DATA_UNK, IPS_DATA_UNK, IPS_DATA_UNK,
509         IPS_DATA_UNK, IPS_DATA_UNK, IPS_DATA_UNK, IPS_DATA_UNK, IPS_DATA_UNK,
510         IPS_DATA_UNK, IPS_DATA_UNK, IPS_DATA_UNK, IPS_DATA_UNK, IPS_DATA_UNK,
511         IPS_DATA_UNK, IPS_DATA_UNK, IPS_DATA_UNK, IPS_DATA_UNK, IPS_DATA_UNK,
512         IPS_DATA_UNK, IPS_DATA_UNK, IPS_DATA_UNK, IPS_DATA_UNK, IPS_DATA_UNK,
513         IPS_DATA_UNK, IPS_DATA_UNK, IPS_DATA_UNK, IPS_DATA_UNK, IPS_DATA_UNK,
514         IPS_DATA_UNK, IPS_DATA_UNK, IPS_DATA_UNK, IPS_DATA_UNK, IPS_DATA_OUT,
515         IPS_DATA_UNK, IPS_DATA_UNK, IPS_DATA_UNK, IPS_DATA_UNK, IPS_DATA_UNK,
516         IPS_DATA_UNK, IPS_DATA_UNK, IPS_DATA_UNK, IPS_DATA_UNK, IPS_DATA_UNK,
517         IPS_DATA_UNK, IPS_DATA_UNK, IPS_DATA_UNK, IPS_DATA_UNK, IPS_DATA_UNK,
518         IPS_DATA_UNK, IPS_DATA_UNK, IPS_DATA_UNK, IPS_DATA_UNK, IPS_DATA_UNK
519 };
520
521
522 /****************************************************************************/
523 /*                                                                          */
524 /* Routine Name: ips_setup                                                  */
525 /*                                                                          */
526 /* Routine Description:                                                     */
527 /*                                                                          */
528 /*   setup parameters to the driver                                         */
529 /*                                                                          */
530 /****************************************************************************/
531 static int
532 ips_setup(char *ips_str)
533 {
534
535         int i;
536         char *key;
537         char *value;
538         IPS_OPTION options[] = {
539                 {"noi2o", &ips_force_i2o, 0},
540                 {"nommap", &ips_force_memio, 0},
541                 {"ioctlsize", &ips_ioctlsize, IPS_IOCTL_SIZE},
542                 {"cdboot", &ips_cd_boot, 0},
543                 {"maxcmds", &MaxLiteCmds, 32},
544         };
545
546         /* Don't use strtok() anymore ( if 2.4 Kernel or beyond ) */
547         /* Search for value */
548         while ((key = strsep(&ips_str, ",."))) {
549                 if (!*key)
550                         continue;
551                 value = strchr(key, ':');
552                 if (value)
553                         *value++ = '\0';
554                 /*
555                  * We now have key/value pairs.
556                  * Update the variables
557                  */
558                 for (i = 0; i < (sizeof (options) / sizeof (options[0])); i++) {
559                         if (strnicmp
560                             (key, options[i].option_name,
561                              strlen(options[i].option_name)) == 0) {
562                                 if (value)
563                                         *options[i].option_flag =
564                                             simple_strtoul(value, NULL, 0);
565                                 else
566                                         *options[i].option_flag =
567                                             options[i].option_value;
568                                 break;
569                         }
570                 }
571         }
572
573         return (1);
574 }
575
576 __setup("ips=", ips_setup);
577
578 /****************************************************************************/
579 /*                                                                          */
580 /* Routine Name: ips_detect                                                 */
581 /*                                                                          */
582 /* Routine Description:                                                     */
583 /*                                                                          */
584 /*   Detect and initialize the driver                                       */
585 /*                                                                          */
586 /* NOTE: this routine is called under the io_request_lock spinlock          */
587 /*                                                                          */
588 /****************************************************************************/
589 static int
590 ips_detect(Scsi_Host_Template * SHT)
591 {
592         int i;
593
594         METHOD_TRACE("ips_detect", 1);
595
596 #ifdef MODULE
597         if (ips)
598                 ips_setup(ips);
599 #endif
600
601         for (i = 0; i < ips_num_controllers; i++) {
602                 if (ips_register_scsi(i))
603                         ips_free(ips_ha[i]);
604                 ips_released_controllers++;
605         }
606         ips_hotplug = 1;
607         return (ips_num_controllers);
608 }
609
610 /****************************************************************************/
611 /*   configure the function pointers to use the functions that will work    */
612 /*   with the found version of the adapter                                  */
613 /****************************************************************************/
614 static void
615 ips_setup_funclist(ips_ha_t * ha)
616 {
617
618         /*                                
619          * Setup Functions
620          */
621         if (IPS_IS_MORPHEUS(ha) || IPS_IS_MARCO(ha)) {
622                 /* morpheus / marco / sebring */
623                 ha->func.isintr = ips_isintr_morpheus;
624                 ha->func.isinit = ips_isinit_morpheus;
625                 ha->func.issue = ips_issue_i2o_memio;
626                 ha->func.init = ips_init_morpheus;
627                 ha->func.statupd = ips_statupd_morpheus;
628                 ha->func.reset = ips_reset_morpheus;
629                 ha->func.intr = ips_intr_morpheus;
630                 ha->func.enableint = ips_enable_int_morpheus;
631         } else if (IPS_USE_MEMIO(ha)) {
632                 /* copperhead w/MEMIO */
633                 ha->func.isintr = ips_isintr_copperhead_memio;
634                 ha->func.isinit = ips_isinit_copperhead_memio;
635                 ha->func.init = ips_init_copperhead_memio;
636                 ha->func.statupd = ips_statupd_copperhead_memio;
637                 ha->func.statinit = ips_statinit_memio;
638                 ha->func.reset = ips_reset_copperhead_memio;
639                 ha->func.intr = ips_intr_copperhead;
640                 ha->func.erasebios = ips_erase_bios_memio;
641                 ha->func.programbios = ips_program_bios_memio;
642                 ha->func.verifybios = ips_verify_bios_memio;
643                 ha->func.enableint = ips_enable_int_copperhead_memio;
644                 if (IPS_USE_I2O_DELIVER(ha))
645                         ha->func.issue = ips_issue_i2o_memio;
646                 else
647                         ha->func.issue = ips_issue_copperhead_memio;
648         } else {
649                 /* copperhead */
650                 ha->func.isintr = ips_isintr_copperhead;
651                 ha->func.isinit = ips_isinit_copperhead;
652                 ha->func.init = ips_init_copperhead;
653                 ha->func.statupd = ips_statupd_copperhead;
654                 ha->func.statinit = ips_statinit;
655                 ha->func.reset = ips_reset_copperhead;
656                 ha->func.intr = ips_intr_copperhead;
657                 ha->func.erasebios = ips_erase_bios;
658                 ha->func.programbios = ips_program_bios;
659                 ha->func.verifybios = ips_verify_bios;
660                 ha->func.enableint = ips_enable_int_copperhead;
661
662                 if (IPS_USE_I2O_DELIVER(ha))
663                         ha->func.issue = ips_issue_i2o;
664                 else
665                         ha->func.issue = ips_issue_copperhead;
666         }
667 }
668
669 /****************************************************************************/
670 /*                                                                          */
671 /* Routine Name: ips_release                                                */
672 /*                                                                          */
673 /* Routine Description:                                                     */
674 /*                                                                          */
675 /*   Remove a driver                                                        */
676 /*                                                                          */
677 /****************************************************************************/
678 static int
679 ips_release(struct Scsi_Host *sh)
680 {
681         ips_scb_t *scb;
682         ips_ha_t *ha;
683         int i;
684
685         METHOD_TRACE("ips_release", 1);
686
687         for (i = 0; i < IPS_MAX_ADAPTERS && ips_sh[i] != sh; i++) ;
688
689         if (i == IPS_MAX_ADAPTERS) {
690                 printk(KERN_WARNING
691                        "(%s) release, invalid Scsi_Host pointer.\n", ips_name);
692                 BUG();
693                 return (FALSE);
694         }
695
696         ha = IPS_HA(sh);
697
698         if (!ha)
699                 return (FALSE);
700
701         /* flush the cache on the controller */
702         scb = &ha->scbs[ha->max_cmds - 1];
703
704         ips_init_scb(ha, scb);
705
706         scb->timeout = ips_cmd_timeout;
707         scb->cdb[0] = IPS_CMD_FLUSH;
708
709         scb->cmd.flush_cache.op_code = IPS_CMD_FLUSH;
710         scb->cmd.flush_cache.command_id = IPS_COMMAND_ID(ha, scb);
711         scb->cmd.flush_cache.state = IPS_NORM_STATE;
712         scb->cmd.flush_cache.reserved = 0;
713         scb->cmd.flush_cache.reserved2 = 0;
714         scb->cmd.flush_cache.reserved3 = 0;
715         scb->cmd.flush_cache.reserved4 = 0;
716
717         IPS_PRINTK(KERN_WARNING, ha->pcidev, "Flushing Cache.\n");
718
719         /* send command */
720         if (ips_send_wait(ha, scb, ips_cmd_timeout, IPS_INTR_ON) == IPS_FAILURE)
721                 IPS_PRINTK(KERN_WARNING, ha->pcidev, "Incomplete Flush.\n");
722
723         IPS_PRINTK(KERN_WARNING, ha->pcidev, "Flushing Complete.\n");
724
725         ips_sh[i] = NULL;
726         ips_ha[i] = NULL;
727
728         /* free extra memory */
729         ips_free(ha);
730
731         /* Free I/O Region */
732         if (ha->io_addr)
733                 release_region(ha->io_addr, ha->io_len);
734
735         /* free IRQ */
736         free_irq(ha->irq, ha);
737
738         IPS_REMOVE_HOST(sh);
739         scsi_host_put(sh);
740
741         ips_released_controllers++;
742
743         return (FALSE);
744 }
745
746 /****************************************************************************/
747 /*                                                                          */
748 /* Routine Name: ips_halt                                                   */
749 /*                                                                          */
750 /* Routine Description:                                                     */
751 /*                                                                          */
752 /*   Perform cleanup when the system reboots                                */
753 /*                                                                          */
754 /****************************************************************************/
755 static int
756 ips_halt(struct notifier_block *nb, ulong event, void *buf)
757 {
758         ips_scb_t *scb;
759         ips_ha_t *ha;
760         int i;
761
762         if ((event != SYS_RESTART) && (event != SYS_HALT) &&
763             (event != SYS_POWER_OFF))
764                 return (NOTIFY_DONE);
765
766         for (i = 0; i < ips_next_controller; i++) {
767                 ha = (ips_ha_t *) ips_ha[i];
768
769                 if (!ha)
770                         continue;
771
772                 if (!ha->active)
773                         continue;
774
775                 /* flush the cache on the controller */
776                 scb = &ha->scbs[ha->max_cmds - 1];
777
778                 ips_init_scb(ha, scb);
779
780                 scb->timeout = ips_cmd_timeout;
781                 scb->cdb[0] = IPS_CMD_FLUSH;
782
783                 scb->cmd.flush_cache.op_code = IPS_CMD_FLUSH;
784                 scb->cmd.flush_cache.command_id = IPS_COMMAND_ID(ha, scb);
785                 scb->cmd.flush_cache.state = IPS_NORM_STATE;
786                 scb->cmd.flush_cache.reserved = 0;
787                 scb->cmd.flush_cache.reserved2 = 0;
788                 scb->cmd.flush_cache.reserved3 = 0;
789                 scb->cmd.flush_cache.reserved4 = 0;
790
791                 IPS_PRINTK(KERN_WARNING, ha->pcidev, "Flushing Cache.\n");
792
793                 /* send command */
794                 if (ips_send_wait(ha, scb, ips_cmd_timeout, IPS_INTR_ON) ==
795                     IPS_FAILURE)
796                         IPS_PRINTK(KERN_WARNING, ha->pcidev,
797                                    "Incomplete Flush.\n");
798                 else
799                         IPS_PRINTK(KERN_WARNING, ha->pcidev,
800                                    "Flushing Complete.\n");
801         }
802
803         return (NOTIFY_OK);
804 }
805
806 /****************************************************************************/
807 /*                                                                          */
808 /* Routine Name: ips_eh_abort                                               */
809 /*                                                                          */
810 /* Routine Description:                                                     */
811 /*                                                                          */
812 /*   Abort a command (using the new error code stuff)                       */
813 /* Note: this routine is called under the io_request_lock                   */
814 /****************************************************************************/
815 int
816 ips_eh_abort(Scsi_Cmnd * SC)
817 {
818         ips_ha_t *ha;
819         ips_copp_wait_item_t *item;
820         int ret;
821         unsigned long cpu_flags;
822         struct Scsi_Host *host;
823
824         METHOD_TRACE("ips_eh_abort", 1);
825
826         if (!SC)
827                 return (FAILED);
828
829         host = SC->device->host;
830         ha = (ips_ha_t *) SC->device->host->hostdata;
831
832         if (!ha)
833                 return (FAILED);
834
835         if (!ha->active)
836                 return (FAILED);
837
838         IPS_LOCK_SAVE(host->host_lock, cpu_flags);
839
840         /* See if the command is on the copp queue */
841         item = ha->copp_waitlist.head;
842         while ((item) && (item->scsi_cmd != SC))
843                 item = item->next;
844
845         if (item) {
846                 /* Found it */
847                 ips_removeq_copp(&ha->copp_waitlist, item);
848                 ret = (SUCCESS);
849
850                 /* See if the command is on the wait queue */
851         } else if (ips_removeq_wait(&ha->scb_waitlist, SC)) {
852                 /* command not sent yet */
853                 ret = (SUCCESS);
854         } else {
855                 /* command must have already been sent */
856                 ret = (FAILED);
857         }
858
859         IPS_UNLOCK_RESTORE(host->host_lock, cpu_flags);
860         return ret;
861 }
862
863 /****************************************************************************/
864 /*                                                                          */
865 /* Routine Name: ips_eh_reset                                               */
866 /*                                                                          */
867 /* Routine Description:                                                     */
868 /*                                                                          */
869 /*   Reset the controller (with new eh error code)                          */
870 /*                                                                          */
871 /* NOTE: this routine is called under the io_request_lock spinlock          */
872 /*                                                                          */
873 /****************************************************************************/
874 static int
875 __ips_eh_reset(Scsi_Cmnd * SC)
876 {
877         int ret;
878         int i;
879         ips_ha_t *ha;
880         ips_scb_t *scb;
881         ips_copp_wait_item_t *item;
882
883         METHOD_TRACE("ips_eh_reset", 1);
884
885 #ifdef NO_IPS_RESET
886         return (FAILED);
887 #else
888
889         if (!SC) {
890                 DEBUG(1, "Reset called with NULL scsi command");
891
892                 return (FAILED);
893         }
894
895         ha = (ips_ha_t *) SC->device->host->hostdata;
896
897         if (!ha) {
898                 DEBUG(1, "Reset called with NULL ha struct");
899
900                 return (FAILED);
901         }
902
903         if (!ha->active)
904                 return (FAILED);
905
906         /* See if the command is on the copp queue */
907         item = ha->copp_waitlist.head;
908         while ((item) && (item->scsi_cmd != SC))
909                 item = item->next;
910
911         if (item) {
912                 /* Found it */
913                 ips_removeq_copp(&ha->copp_waitlist, item);
914                 return (SUCCESS);
915         }
916
917         /* See if the command is on the wait queue */
918         if (ips_removeq_wait(&ha->scb_waitlist, SC)) {
919                 /* command not sent yet */
920                 return (SUCCESS);
921         }
922
923         /* An explanation for the casual observer:                              */
924         /* Part of the function of a RAID controller is automatic error         */
925         /* detection and recovery.  As such, the only problem that physically   */
926         /* resetting an adapter will ever fix is when, for some reason,         */
927         /* the driver is not successfully communicating with the adapter.       */
928         /* Therefore, we will attempt to flush this adapter.  If that succeeds, */
929         /* then there's no real purpose in a physical reset. This will complete */
930         /* much faster and avoids any problems that might be caused by a        */
931         /* physical reset ( such as having to fail all the outstanding I/O's ). */
932
933         if (ha->ioctl_reset == 0) {     /* IF Not an IOCTL Requested Reset */
934                 scb = &ha->scbs[ha->max_cmds - 1];
935
936                 ips_init_scb(ha, scb);
937
938                 scb->timeout = ips_cmd_timeout;
939                 scb->cdb[0] = IPS_CMD_FLUSH;
940
941                 scb->cmd.flush_cache.op_code = IPS_CMD_FLUSH;
942                 scb->cmd.flush_cache.command_id = IPS_COMMAND_ID(ha, scb);
943                 scb->cmd.flush_cache.state = IPS_NORM_STATE;
944                 scb->cmd.flush_cache.reserved = 0;
945                 scb->cmd.flush_cache.reserved2 = 0;
946                 scb->cmd.flush_cache.reserved3 = 0;
947                 scb->cmd.flush_cache.reserved4 = 0;
948
949                 /* Attempt the flush command */
950                 ret = ips_send_wait(ha, scb, ips_cmd_timeout, IPS_INTR_IORL);
951                 if (ret == IPS_SUCCESS) {
952                         IPS_PRINTK(KERN_NOTICE, ha->pcidev,
953                                    "Reset Request - Flushed Cache\n");
954                         return (SUCCESS);
955                 }
956         }
957
958         /* Either we can't communicate with the adapter or it's an IOCTL request */
959         /* from a utility.  A physical reset is needed at this point.            */
960
961         ha->ioctl_reset = 0;    /* Reset the IOCTL Requested Reset Flag */
962
963         /*
964          * command must have already been sent
965          * reset the controller
966          */
967         IPS_PRINTK(KERN_NOTICE, ha->pcidev, "Resetting controller.\n");
968         ret = (*ha->func.reset) (ha);
969
970         if (!ret) {
971                 Scsi_Cmnd *scsi_cmd;
972
973                 IPS_PRINTK(KERN_NOTICE, ha->pcidev,
974                            "Controller reset failed - controller now offline.\n");
975
976                 /* Now fail all of the active commands */
977                 DEBUG_VAR(1, "(%s%d) Failing active commands",
978                           ips_name, ha->host_num);
979
980                 while ((scb = ips_removeq_scb_head(&ha->scb_activelist))) {
981                         scb->scsi_cmd->result = DID_ERROR << 16;
982                         scb->scsi_cmd->scsi_done(scb->scsi_cmd);
983                         ips_freescb(ha, scb);
984                 }
985
986                 /* Now fail all of the pending commands */
987                 DEBUG_VAR(1, "(%s%d) Failing pending commands",
988                           ips_name, ha->host_num);
989
990                 while ((scsi_cmd = ips_removeq_wait_head(&ha->scb_waitlist))) {
991                         scsi_cmd->result = DID_ERROR;
992                         scsi_cmd->scsi_done(scsi_cmd);
993                 }
994
995                 ha->active = FALSE;
996                 return (FAILED);
997         }
998
999         if (!ips_clear_adapter(ha, IPS_INTR_IORL)) {
1000                 Scsi_Cmnd *scsi_cmd;
1001
1002                 IPS_PRINTK(KERN_NOTICE, ha->pcidev,
1003                            "Controller reset failed - controller now offline.\n");
1004
1005                 /* Now fail all of the active commands */
1006                 DEBUG_VAR(1, "(%s%d) Failing active commands",
1007                           ips_name, ha->host_num);
1008
1009                 while ((scb = ips_removeq_scb_head(&ha->scb_activelist))) {
1010                         scb->scsi_cmd->result = DID_ERROR << 16;
1011                         scb->scsi_cmd->scsi_done(scb->scsi_cmd);
1012                         ips_freescb(ha, scb);
1013                 }
1014
1015                 /* Now fail all of the pending commands */
1016                 DEBUG_VAR(1, "(%s%d) Failing pending commands",
1017                           ips_name, ha->host_num);
1018
1019                 while ((scsi_cmd = ips_removeq_wait_head(&ha->scb_waitlist))) {
1020                         scsi_cmd->result = DID_ERROR << 16;
1021                         scsi_cmd->scsi_done(scsi_cmd);
1022                 }
1023
1024                 ha->active = FALSE;
1025                 return (FAILED);
1026         }
1027
1028         /* FFDC */
1029         if (le32_to_cpu(ha->subsys->param[3]) & 0x300000) {
1030                 struct timeval tv;
1031
1032                 do_gettimeofday(&tv);
1033                 ha->last_ffdc = tv.tv_sec;
1034                 ha->reset_count++;
1035                 ips_ffdc_reset(ha, IPS_INTR_IORL);
1036         }
1037
1038         /* Now fail all of the active commands */
1039         DEBUG_VAR(1, "(%s%d) Failing active commands", ips_name, ha->host_num);
1040
1041         while ((scb = ips_removeq_scb_head(&ha->scb_activelist))) {
1042                 scb->scsi_cmd->result =
1043                     (DID_RESET << 16) | (SUGGEST_RETRY << 24);
1044                 scb->scsi_cmd->scsi_done(scb->scsi_cmd);
1045                 ips_freescb(ha, scb);
1046         }
1047
1048         /* Reset DCDB active command bits */
1049         for (i = 1; i < ha->nbus; i++)
1050                 ha->dcdb_active[i - 1] = 0;
1051
1052         /* Reset the number of active IOCTLs */
1053         ha->num_ioctl = 0;
1054
1055         ips_next(ha, IPS_INTR_IORL);
1056
1057         return (SUCCESS);
1058 #endif                          /* NO_IPS_RESET */
1059
1060 }
1061
1062 static int
1063 ips_eh_reset(Scsi_Cmnd * SC)
1064 {
1065         int rc;
1066
1067         spin_lock_irq(SC->device->host->host_lock);
1068         rc = __ips_eh_reset(SC);
1069         spin_unlock_irq(SC->device->host->host_lock);
1070
1071         return rc;
1072 }
1073
1074 /****************************************************************************/
1075 /*                                                                          */
1076 /* Routine Name: ips_queue                                                  */
1077 /*                                                                          */
1078 /* Routine Description:                                                     */
1079 /*                                                                          */
1080 /*   Send a command to the controller                                       */
1081 /*                                                                          */
1082 /* NOTE:                                                                    */
1083 /*    Linux obtains io_request_lock before calling this function            */
1084 /*                                                                          */
1085 /****************************************************************************/
1086 static int
1087 ips_queue(Scsi_Cmnd * SC, void (*done) (Scsi_Cmnd *))
1088 {
1089         ips_ha_t *ha;
1090         ips_passthru_t *pt;
1091
1092         METHOD_TRACE("ips_queue", 1);
1093
1094         ha = (ips_ha_t *) SC->device->host->hostdata;
1095
1096         if (!ha)
1097                 return (1);
1098
1099         if (!ha->active)
1100                 return (DID_ERROR);
1101
1102         if (ips_is_passthru(SC)) {
1103                 if (ha->copp_waitlist.count == IPS_MAX_IOCTL_QUEUE) {
1104                         SC->result = DID_BUS_BUSY << 16;
1105                         done(SC);
1106
1107                         return (0);
1108                 }
1109         } else if (ha->scb_waitlist.count == IPS_MAX_QUEUE) {
1110                 SC->result = DID_BUS_BUSY << 16;
1111                 done(SC);
1112
1113                 return (0);
1114         }
1115
1116         SC->scsi_done = done;
1117
1118         DEBUG_VAR(2, "(%s%d): ips_queue: cmd 0x%X (%d %d %d)",
1119                   ips_name,
1120                   ha->host_num,
1121                   SC->cmnd[0],
1122                   SC->device->channel, SC->device->id, SC->device->lun);
1123
1124         /* Check for command to initiator IDs */
1125         if ((scmd_channel(SC) > 0)
1126             && (scmd_id(SC) == ha->ha_id[scmd_channel(SC)])) {
1127                 SC->result = DID_NO_CONNECT << 16;
1128                 done(SC);
1129
1130                 return (0);
1131         }
1132
1133         if (ips_is_passthru(SC)) {
1134
1135                 ips_copp_wait_item_t *scratch;
1136
1137                 /* A Reset IOCTL is only sent by the boot CD in extreme cases.           */
1138                 /* There can never be any system activity ( network or disk ), but check */
1139                 /* anyway just as a good practice.                                       */
1140                 pt = (ips_passthru_t *) SC->request_buffer;
1141                 if ((pt->CoppCP.cmd.reset.op_code == IPS_CMD_RESET_CHANNEL) &&
1142                     (pt->CoppCP.cmd.reset.adapter_flag == 1)) {
1143                         if (ha->scb_activelist.count != 0) {
1144                                 SC->result = DID_BUS_BUSY << 16;
1145                                 done(SC);
1146                                 return (0);
1147                         }
1148                         ha->ioctl_reset = 1;    /* This reset request is from an IOCTL */
1149                         ips_eh_reset(SC);
1150                         SC->result = DID_OK << 16;
1151                         SC->scsi_done(SC);
1152                         return (0);
1153                 }
1154
1155                 /* allocate space for the scribble */
1156                 scratch = kmalloc(sizeof (ips_copp_wait_item_t), GFP_ATOMIC);
1157
1158                 if (!scratch) {
1159                         SC->result = DID_ERROR << 16;
1160                         done(SC);
1161
1162                         return (0);
1163                 }
1164
1165                 scratch->scsi_cmd = SC;
1166                 scratch->next = NULL;
1167
1168                 ips_putq_copp_tail(&ha->copp_waitlist, scratch);
1169         } else {
1170                 ips_putq_wait_tail(&ha->scb_waitlist, SC);
1171         }
1172
1173         ips_next(ha, IPS_INTR_IORL);
1174
1175         return (0);
1176 }
1177
1178 /****************************************************************************/
1179 /*                                                                          */
1180 /* Routine Name: ips_biosparam                                              */
1181 /*                                                                          */
1182 /* Routine Description:                                                     */
1183 /*                                                                          */
1184 /*   Set bios geometry for the controller                                   */
1185 /*                                                                          */
1186 /****************************************************************************/
1187 static int
1188 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
1189 ips_biosparam(Disk * disk, kdev_t dev, int geom[])
1190 {
1191         ips_ha_t *ha = (ips_ha_t *) disk->device->host->hostdata;
1192         unsigned long capacity = disk->capacity;
1193 #else
1194 ips_biosparam(struct scsi_device *sdev, struct block_device *bdev,
1195               sector_t capacity, int geom[])
1196 {
1197         ips_ha_t *ha = (ips_ha_t *) sdev->host->hostdata;
1198 #endif
1199         int heads;
1200         int sectors;
1201         int cylinders;
1202
1203         METHOD_TRACE("ips_biosparam", 1);
1204
1205         if (!ha)
1206                 /* ?!?! host adater info invalid */
1207                 return (0);
1208
1209         if (!ha->active)
1210                 return (0);
1211
1212         if (!ips_read_adapter_status(ha, IPS_INTR_ON))
1213                 /* ?!?! Enquiry command failed */
1214                 return (0);
1215
1216         if ((capacity > 0x400000) && ((ha->enq->ucMiscFlag & 0x8) == 0)) {
1217                 heads = IPS_NORM_HEADS;
1218                 sectors = IPS_NORM_SECTORS;
1219         } else {
1220                 heads = IPS_COMP_HEADS;
1221                 sectors = IPS_COMP_SECTORS;
1222         }
1223
1224         cylinders = (unsigned long) capacity / (heads * sectors);
1225
1226         DEBUG_VAR(2, "Geometry: heads: %d, sectors: %d, cylinders: %d",
1227                   heads, sectors, cylinders);
1228
1229         geom[0] = heads;
1230         geom[1] = sectors;
1231         geom[2] = cylinders;
1232
1233         return (0);
1234 }
1235
1236 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
1237
1238 /* ips_proc24_info is a wrapper around ips_proc_info *
1239  * for compatibility with the 2.4 scsi parameters    */
1240 static int
1241 ips_proc24_info(char *buffer, char **start, off_t offset, int length,
1242                               int hostno, int func)
1243 {
1244         int i;
1245
1246         for (i = 0; i < ips_next_controller; i++) {
1247                 if (ips_sh[i] && ips_sh[i]->host_no == hostno) {
1248                         return ips_proc_info(ips_sh[i], buffer, start,
1249                                              offset, length, func);
1250                 }
1251         }
1252         return -EINVAL; 
1253 }
1254
1255 /****************************************************************************/
1256 /*                                                                          */
1257 /* Routine Name: ips_select_queue_depth                                     */
1258 /*                                                                          */
1259 /* Routine Description:                                                     */
1260 /*                                                                          */
1261 /*   Select queue depths for the devices on the contoller                   */
1262 /*                                                                          */
1263 /****************************************************************************/
1264 static void
1265 ips_select_queue_depth(struct Scsi_Host *host, Scsi_Device * scsi_devs)
1266 {
1267         Scsi_Device *device;
1268         ips_ha_t *ha;
1269         int count = 0;
1270         int min;
1271
1272         ha = IPS_HA(host);
1273         min = ha->max_cmds / 4;
1274
1275         for (device = scsi_devs; device; device = device->next) {
1276                 if (device->host == host) {
1277                         if ((device->channel == 0) && (device->type == 0))
1278                                 count++;
1279                 }
1280         }
1281
1282         for (device = scsi_devs; device; device = device->next) {
1283                 if (device->host == host) {
1284                         if ((device->channel == 0) && (device->type == 0)) {
1285                                 device->queue_depth =
1286                                     (ha->max_cmds - 1) / count;
1287                                 if (device->queue_depth < min)
1288                                         device->queue_depth = min;
1289                         } else {
1290                                 device->queue_depth = 2;
1291                         }
1292
1293                         if (device->queue_depth < 2)
1294                                 device->queue_depth = 2;
1295                 }
1296         }
1297 }
1298
1299 #else
1300 /****************************************************************************/
1301 /*                                                                          */
1302 /* Routine Name: ips_slave_configure                                        */
1303 /*                                                                          */
1304 /* Routine Description:                                                     */
1305 /*                                                                          */
1306 /*   Set queue depths on devices once scan is complete                      */
1307 /*                                                                          */
1308 /****************************************************************************/
1309 static int
1310 ips_slave_configure(Scsi_Device * SDptr)
1311 {
1312         ips_ha_t *ha;
1313         int min;
1314
1315         ha = IPS_HA(SDptr->host);
1316         if (SDptr->tagged_supported && SDptr->type == TYPE_DISK) {
1317                 min = ha->max_cmds / 2;
1318                 if (ha->enq->ucLogDriveCount <= 2)
1319                         min = ha->max_cmds - 1;
1320                 scsi_adjust_queue_depth(SDptr, MSG_ORDERED_TAG, min);
1321         }
1322         return 0;
1323 }
1324 #endif
1325
1326 /****************************************************************************/
1327 /*                                                                          */
1328 /* Routine Name: do_ipsintr                                                 */
1329 /*                                                                          */
1330 /* Routine Description:                                                     */
1331 /*                                                                          */
1332 /*   Wrapper for the interrupt handler                                      */
1333 /*                                                                          */
1334 /****************************************************************************/
1335 static irqreturn_t
1336 do_ipsintr(int irq, void *dev_id, struct pt_regs * regs)
1337 {
1338         ips_ha_t *ha;
1339         unsigned long cpu_flags;
1340         struct Scsi_Host *host;
1341         int irqstatus;
1342
1343         METHOD_TRACE("do_ipsintr", 2);
1344
1345         ha = (ips_ha_t *) dev_id;
1346         if (!ha)
1347                 return IRQ_NONE;
1348         host = ips_sh[ha->host_num];
1349         /* interrupt during initialization */
1350         if (!host) {
1351                 (*ha->func.intr) (ha);
1352                 return IRQ_HANDLED;
1353         }
1354
1355         IPS_LOCK_SAVE(host->host_lock, cpu_flags);
1356
1357         if (!ha->active) {
1358                 IPS_UNLOCK_RESTORE(host->host_lock, cpu_flags);
1359                 return IRQ_HANDLED;
1360         }
1361
1362         irqstatus = (*ha->func.intr) (ha);
1363
1364         IPS_UNLOCK_RESTORE(host->host_lock, cpu_flags);
1365
1366         /* start the next command */
1367         ips_next(ha, IPS_INTR_ON);
1368         return IRQ_RETVAL(irqstatus);
1369 }
1370
1371 /****************************************************************************/
1372 /*                                                                          */
1373 /* Routine Name: ips_intr_copperhead                                        */
1374 /*                                                                          */
1375 /* Routine Description:                                                     */
1376 /*                                                                          */
1377 /*   Polling interrupt handler                                              */
1378 /*                                                                          */
1379 /*   ASSUMES interrupts are disabled                                        */
1380 /*                                                                          */
1381 /****************************************************************************/
1382 int
1383 ips_intr_copperhead(ips_ha_t * ha)
1384 {
1385         ips_stat_t *sp;
1386         ips_scb_t *scb;
1387         IPS_STATUS cstatus;
1388         int intrstatus;
1389
1390         METHOD_TRACE("ips_intr", 2);
1391
1392         if (!ha)
1393                 return 0;
1394
1395         if (!ha->active)
1396                 return 0;
1397
1398         intrstatus = (*ha->func.isintr) (ha);
1399
1400         if (!intrstatus) {
1401                 /*
1402                  * Unexpected/Shared interrupt
1403                  */
1404
1405                 return 0;
1406         }
1407
1408         while (TRUE) {
1409                 sp = &ha->sp;
1410
1411                 intrstatus = (*ha->func.isintr) (ha);
1412
1413                 if (!intrstatus)
1414                         break;
1415                 else
1416                         cstatus.value = (*ha->func.statupd) (ha);
1417
1418                 if (cstatus.fields.command_id > (IPS_MAX_CMDS - 1)) {
1419                         /* Spurious Interupt ? */
1420                         continue;
1421                 }
1422
1423                 ips_chkstatus(ha, &cstatus);
1424                 scb = (ips_scb_t *) sp->scb_addr;
1425
1426                 /*
1427                  * use the callback function to finish things up
1428                  * NOTE: interrupts are OFF for this
1429                  */
1430                 (*scb->callback) (ha, scb);
1431         }                       /* end while */
1432         return 1;
1433 }
1434
1435 /****************************************************************************/
1436 /*                                                                          */
1437 /* Routine Name: ips_intr_morpheus                                          */
1438 /*                                                                          */
1439 /* Routine Description:                                                     */
1440 /*                                                                          */
1441 /*   Polling interrupt handler                                              */
1442 /*                                                                          */
1443 /*   ASSUMES interrupts are disabled                                        */
1444 /*                                                                          */
1445 /****************************************************************************/
1446 int
1447 ips_intr_morpheus(ips_ha_t * ha)
1448 {
1449         ips_stat_t *sp;
1450         ips_scb_t *scb;
1451         IPS_STATUS cstatus;
1452         int intrstatus;
1453
1454         METHOD_TRACE("ips_intr_morpheus", 2);
1455
1456         if (!ha)
1457                 return 0;
1458
1459         if (!ha->active)
1460                 return 0;
1461
1462         intrstatus = (*ha->func.isintr) (ha);
1463
1464         if (!intrstatus) {
1465                 /*
1466                  * Unexpected/Shared interrupt
1467                  */
1468
1469                 return 0;
1470         }
1471
1472         while (TRUE) {
1473                 sp = &ha->sp;
1474
1475                 intrstatus = (*ha->func.isintr) (ha);
1476
1477                 if (!intrstatus)
1478                         break;
1479                 else
1480                         cstatus.value = (*ha->func.statupd) (ha);
1481
1482                 if (cstatus.value == 0xffffffff)
1483                         /* No more to process */
1484                         break;
1485
1486                 if (cstatus.fields.command_id > (IPS_MAX_CMDS - 1)) {
1487                         IPS_PRINTK(KERN_WARNING, ha->pcidev,
1488                                    "Spurious interrupt; no ccb.\n");
1489
1490                         continue;
1491                 }
1492
1493                 ips_chkstatus(ha, &cstatus);
1494                 scb = (ips_scb_t *) sp->scb_addr;
1495
1496                 /*
1497                  * use the callback function to finish things up
1498                  * NOTE: interrupts are OFF for this
1499                  */
1500                 (*scb->callback) (ha, scb);
1501         }                       /* end while */
1502         return 1;
1503 }
1504
1505 /****************************************************************************/
1506 /*                                                                          */
1507 /* Routine Name: ips_info                                                   */
1508 /*                                                                          */
1509 /* Routine Description:                                                     */
1510 /*                                                                          */
1511 /*   Return info about the driver                                           */
1512 /*                                                                          */
1513 /****************************************************************************/
1514 static const char *
1515 ips_info(struct Scsi_Host *SH)
1516 {
1517         static char buffer[256];
1518         char *bp;
1519         ips_ha_t *ha;
1520
1521         METHOD_TRACE("ips_info", 1);
1522
1523         ha = IPS_HA(SH);
1524
1525         if (!ha)
1526                 return (NULL);
1527
1528         bp = &buffer[0];
1529         memset(bp, 0, sizeof (buffer));
1530
1531         sprintf(bp, "%s%s%s Build %d", "IBM PCI ServeRAID ",
1532                 IPS_VERSION_HIGH, IPS_VERSION_LOW, IPS_BUILD_IDENT);
1533
1534         if (ha->ad_type > 0 && ha->ad_type <= MAX_ADAPTER_NAME) {
1535                 strcat(bp, " <");
1536                 strcat(bp, ips_adapter_name[ha->ad_type - 1]);
1537                 strcat(bp, ">");
1538         }
1539
1540         return (bp);
1541 }
1542
1543 /****************************************************************************/
1544 /*                                                                          */
1545 /* Routine Name: ips_proc_info                                              */
1546 /*                                                                          */
1547 /* Routine Description:                                                     */
1548 /*                                                                          */
1549 /*   The passthru interface for the driver                                  */
1550 /*                                                                          */
1551 /****************************************************************************/
1552 static int
1553 ips_proc_info(struct Scsi_Host *host, char *buffer, char **start, off_t offset,
1554               int length, int func)
1555 {
1556         int i;
1557         int ret;
1558         ips_ha_t *ha = NULL;
1559
1560         METHOD_TRACE("ips_proc_info", 1);
1561
1562         /* Find our host structure */
1563         for (i = 0; i < ips_next_controller; i++) {
1564                 if (ips_sh[i]) {
1565                         if (ips_sh[i] == host) {
1566                                 ha = (ips_ha_t *) ips_sh[i]->hostdata;
1567                                 break;
1568                         }
1569                 }
1570         }
1571
1572         if (!ha)
1573                 return (-EINVAL);
1574
1575         if (func) {
1576                 /* write */
1577                 return (0);
1578         } else {
1579                 /* read */
1580                 if (start)
1581                         *start = buffer;
1582
1583                 ret = ips_host_info(ha, buffer, offset, length);
1584
1585                 return (ret);
1586         }
1587 }
1588
1589 /*--------------------------------------------------------------------------*/
1590 /* Helper Functions                                                         */
1591 /*--------------------------------------------------------------------------*/
1592
1593 /****************************************************************************/
1594 /*                                                                          */
1595 /* Routine Name: ips_is_passthru                                            */
1596 /*                                                                          */
1597 /* Routine Description:                                                     */
1598 /*                                                                          */
1599 /*   Determine if the specified SCSI command is really a passthru command   */
1600 /*                                                                          */
1601 /****************************************************************************/
1602 static int
1603 ips_is_passthru(Scsi_Cmnd * SC)
1604 {
1605         unsigned long flags;
1606
1607         METHOD_TRACE("ips_is_passthru", 1);
1608
1609         if (!SC)
1610                 return (0);
1611
1612         if ((SC->cmnd[0] == IPS_IOCTL_COMMAND) &&
1613             (SC->device->channel == 0) &&
1614             (SC->device->id == IPS_ADAPTER_ID) &&
1615             (SC->device->lun == 0) && SC->request_buffer) {
1616                 if ((!SC->use_sg) && SC->request_bufflen &&
1617                     (((char *) SC->request_buffer)[0] == 'C') &&
1618                     (((char *) SC->request_buffer)[1] == 'O') &&
1619                     (((char *) SC->request_buffer)[2] == 'P') &&
1620                     (((char *) SC->request_buffer)[3] == 'P'))
1621                         return 1;
1622                 else if (SC->use_sg) {
1623                         struct scatterlist *sg = SC->request_buffer;
1624                         char  *buffer; 
1625
1626                         /* kmap_atomic() ensures addressability of the user buffer.*/
1627                         /* local_irq_save() protects the KM_IRQ0 address slot.     */
1628                         local_irq_save(flags);
1629                         buffer = kmap_atomic(sg->page, KM_IRQ0) + sg->offset; 
1630                         if (buffer && buffer[0] == 'C' && buffer[1] == 'O' &&
1631                             buffer[2] == 'P' && buffer[3] == 'P') {
1632                                 kunmap_atomic(buffer - sg->offset, KM_IRQ0);
1633                                 local_irq_restore(flags);
1634                                 return 1;
1635                         }
1636                         kunmap_atomic(buffer - sg->offset, KM_IRQ0);
1637                         local_irq_restore(flags);
1638                 }
1639         }
1640         return 0;
1641 }
1642
1643 /****************************************************************************/
1644 /*                                                                          */
1645 /* Routine Name: ips_alloc_passthru_buffer                                  */
1646 /*                                                                          */
1647 /* Routine Description:                                                     */
1648 /*   allocate a buffer large enough for the ioctl data if the ioctl buffer  */
1649 /*   is too small or doesn't exist                                          */
1650 /****************************************************************************/
1651 static int
1652 ips_alloc_passthru_buffer(ips_ha_t * ha, int length)
1653 {
1654         void *bigger_buf;
1655         dma_addr_t dma_busaddr;
1656
1657         if (ha->ioctl_data && length <= ha->ioctl_len)
1658                 return 0;
1659         /* there is no buffer or it's not big enough, allocate a new one */
1660         bigger_buf = pci_alloc_consistent(ha->pcidev, length, &dma_busaddr);
1661         if (bigger_buf) {
1662                 /* free the old memory */
1663                 pci_free_consistent(ha->pcidev, ha->ioctl_len, ha->ioctl_data,
1664                                     ha->ioctl_busaddr);
1665                 /* use the new memory */
1666                 ha->ioctl_data = (char *) bigger_buf;
1667                 ha->ioctl_len = length;
1668                 ha->ioctl_busaddr = dma_busaddr;
1669         } else {
1670                 return -1;
1671         }
1672         return 0;
1673 }
1674
1675 /****************************************************************************/
1676 /*                                                                          */
1677 /* Routine Name: ips_make_passthru                                          */
1678 /*                                                                          */
1679 /* Routine Description:                                                     */
1680 /*                                                                          */
1681 /*   Make a passthru command out of the info in the Scsi block              */
1682 /*                                                                          */
1683 /****************************************************************************/
1684 static int
1685 ips_make_passthru(ips_ha_t * ha, Scsi_Cmnd * SC, ips_scb_t * scb, int intr)
1686 {
1687         ips_passthru_t *pt;
1688         int length = 0;
1689         int ret;
1690
1691         METHOD_TRACE("ips_make_passthru", 1);
1692
1693         if (!SC->use_sg) {
1694                 length = SC->request_bufflen;
1695         } else {
1696                 struct scatterlist *sg = SC->request_buffer;
1697                 int i;
1698                 for (i = 0; i < SC->use_sg; i++)
1699                         length += sg[i].length;
1700         }
1701         if (length < sizeof (ips_passthru_t)) {
1702                 /* wrong size */
1703                 DEBUG_VAR(1, "(%s%d) Passthru structure wrong size",
1704                           ips_name, ha->host_num);
1705                 return (IPS_FAILURE);
1706         }
1707         if (ips_alloc_passthru_buffer(ha, length)) {
1708                 /* allocation failure!  If ha->ioctl_data exists, use it to return
1709                    some error codes.  Return a failed command to the scsi layer. */
1710                 if (ha->ioctl_data) {
1711                         pt = (ips_passthru_t *) ha->ioctl_data;
1712                         ips_scmd_buf_read(SC, pt, sizeof (ips_passthru_t));
1713                         pt->BasicStatus = 0x0B;
1714                         pt->ExtendedStatus = 0x00;
1715                         ips_scmd_buf_write(SC, pt, sizeof (ips_passthru_t));
1716                 }
1717                 return IPS_FAILURE;
1718         }
1719         ha->ioctl_datasize = length;
1720
1721         ips_scmd_buf_read(SC, ha->ioctl_data, ha->ioctl_datasize);
1722         pt = (ips_passthru_t *) ha->ioctl_data;
1723
1724         /*
1725          * Some notes about the passthru interface used
1726          *
1727          * IF the scsi op_code == 0x0d then we assume
1728          * that the data came along with/goes with the
1729          * packet we received from the sg driver. In this
1730          * case the CmdBSize field of the pt structure is
1731          * used for the size of the buffer.
1732          */
1733
1734         switch (pt->CoppCmd) {
1735         case IPS_NUMCTRLS:
1736                 memcpy(ha->ioctl_data + sizeof (ips_passthru_t),
1737                        &ips_num_controllers, sizeof (int));
1738                 ips_scmd_buf_write(SC, ha->ioctl_data,
1739                                    sizeof (ips_passthru_t) + sizeof (int));
1740                 SC->result = DID_OK << 16;
1741
1742                 return (IPS_SUCCESS_IMM);
1743
1744         case IPS_COPPUSRCMD:
1745         case IPS_COPPIOCCMD:
1746                 if (SC->cmnd[0] == IPS_IOCTL_COMMAND) {
1747                         if (length < (sizeof (ips_passthru_t) + pt->CmdBSize)) {
1748                                 /* wrong size */
1749                                 DEBUG_VAR(1,
1750                                           "(%s%d) Passthru structure wrong size",
1751                                           ips_name, ha->host_num);
1752
1753                                 return (IPS_FAILURE);
1754                         }
1755
1756                         if (ha->device_id == IPS_DEVICEID_COPPERHEAD &&
1757                             pt->CoppCP.cmd.flashfw.op_code ==
1758                             IPS_CMD_RW_BIOSFW) {
1759                                 ret = ips_flash_copperhead(ha, pt, scb);
1760                                 ips_scmd_buf_write(SC, ha->ioctl_data,
1761                                                    sizeof (ips_passthru_t));
1762                                 return ret;
1763                         }
1764                         if (ips_usrcmd(ha, pt, scb))
1765                                 return (IPS_SUCCESS);
1766                         else
1767                                 return (IPS_FAILURE);
1768                 }
1769
1770                 break;
1771
1772         }                       /* end switch */
1773
1774         return (IPS_FAILURE);
1775 }
1776
1777 /****************************************************************************/
1778 /* Routine Name: ips_flash_copperhead                                       */
1779 /* Routine Description:                                                     */
1780 /*   Flash the BIOS/FW on a Copperhead style controller                     */
1781 /****************************************************************************/
1782 static int
1783 ips_flash_copperhead(ips_ha_t * ha, ips_passthru_t * pt, ips_scb_t * scb)
1784 {
1785         int datasize;
1786
1787         /* Trombone is the only copperhead that can do packet flash, but only
1788          * for firmware. No one said it had to make sence. */
1789         if (IPS_IS_TROMBONE(ha) && pt->CoppCP.cmd.flashfw.type == IPS_FW_IMAGE) {
1790                 if (ips_usrcmd(ha, pt, scb))
1791                         return IPS_SUCCESS;
1792                 else
1793                         return IPS_FAILURE;
1794         }
1795         pt->BasicStatus = 0x0B;
1796         pt->ExtendedStatus = 0;
1797         scb->scsi_cmd->result = DID_OK << 16;
1798         /* IF it's OK to Use the "CD BOOT" Flash Buffer, then you can     */
1799         /* avoid allocating a huge buffer per adapter ( which can fail ). */
1800         if (pt->CoppCP.cmd.flashfw.type == IPS_BIOS_IMAGE &&
1801             pt->CoppCP.cmd.flashfw.direction == IPS_ERASE_BIOS) {
1802                 pt->BasicStatus = 0;
1803                 return ips_flash_bios(ha, pt, scb);
1804         } else if (pt->CoppCP.cmd.flashfw.packet_num == 0) {
1805                 if (ips_FlashData && !test_and_set_bit(0, &ips_FlashDataInUse)){
1806                         ha->flash_data = ips_FlashData;
1807                         ha->flash_busaddr = ips_flashbusaddr;
1808                         ha->flash_len = PAGE_SIZE << 7;
1809                         ha->flash_datasize = 0;
1810                 } else if (!ha->flash_data) {
1811                         datasize = pt->CoppCP.cmd.flashfw.total_packets *
1812                             pt->CoppCP.cmd.flashfw.count;
1813                         ha->flash_data = pci_alloc_consistent(ha->pcidev,
1814                                                               datasize,
1815                                                               &ha->flash_busaddr);
1816                         if (!ha->flash_data){
1817                                 printk(KERN_WARNING "Unable to allocate a flash buffer\n");
1818                                 return IPS_FAILURE;
1819                         }
1820                         ha->flash_datasize = 0;
1821                         ha->flash_len = datasize;
1822                 } else
1823                         return IPS_FAILURE;
1824         } else {
1825                 if (pt->CoppCP.cmd.flashfw.count + ha->flash_datasize >
1826                     ha->flash_len) {
1827                         ips_free_flash_copperhead(ha);
1828                         IPS_PRINTK(KERN_WARNING, ha->pcidev,
1829                                    "failed size sanity check\n");
1830                         return IPS_FAILURE;
1831                 }
1832         }
1833         if (!ha->flash_data)
1834                 return IPS_FAILURE;
1835         pt->BasicStatus = 0;
1836         memcpy(&ha->flash_data[ha->flash_datasize], pt + 1,
1837                pt->CoppCP.cmd.flashfw.count);
1838         ha->flash_datasize += pt->CoppCP.cmd.flashfw.count;
1839         if (pt->CoppCP.cmd.flashfw.packet_num ==
1840             pt->CoppCP.cmd.flashfw.total_packets - 1) {
1841                 if (pt->CoppCP.cmd.flashfw.type == IPS_BIOS_IMAGE)
1842                         return ips_flash_bios(ha, pt, scb);
1843                 else if (pt->CoppCP.cmd.flashfw.type == IPS_FW_IMAGE)
1844                         return ips_flash_firmware(ha, pt, scb);
1845         }
1846         return IPS_SUCCESS_IMM;
1847 }
1848
1849 /****************************************************************************/
1850 /* Routine Name: ips_flash_bios                                             */
1851 /* Routine Description:                                                     */
1852 /*   flashes the bios of a copperhead adapter                               */
1853 /****************************************************************************/
1854 static int
1855 ips_flash_bios(ips_ha_t * ha, ips_passthru_t * pt, ips_scb_t * scb)
1856 {
1857
1858         if (pt->CoppCP.cmd.flashfw.type == IPS_BIOS_IMAGE &&
1859             pt->CoppCP.cmd.flashfw.direction == IPS_WRITE_BIOS) {
1860                 if ((!ha->func.programbios) || (!ha->func.erasebios) ||
1861                     (!ha->func.verifybios))
1862                         goto error;
1863                 if ((*ha->func.erasebios) (ha)) {
1864                         DEBUG_VAR(1,
1865                                   "(%s%d) flash bios failed - unable to erase flash",
1866                                   ips_name, ha->host_num);
1867                         goto error;
1868                 } else
1869                     if ((*ha->func.programbios) (ha,
1870                                                  ha->flash_data +
1871                                                  IPS_BIOS_HEADER,
1872                                                  ha->flash_datasize -
1873                                                  IPS_BIOS_HEADER, 0)) {
1874                         DEBUG_VAR(1,
1875                                   "(%s%d) flash bios failed - unable to flash",
1876                                   ips_name, ha->host_num);
1877                         goto error;
1878                 } else
1879                     if ((*ha->func.verifybios) (ha,
1880                                                 ha->flash_data +
1881                                                 IPS_BIOS_HEADER,
1882                                                 ha->flash_datasize -
1883                                                 IPS_BIOS_HEADER, 0)) {
1884                         DEBUG_VAR(1,
1885                                   "(%s%d) flash bios failed - unable to verify flash",
1886                                   ips_name, ha->host_num);
1887                         goto error;
1888                 }
1889                 ips_free_flash_copperhead(ha);
1890                 return IPS_SUCCESS_IMM;
1891         } else if (pt->CoppCP.cmd.flashfw.type == IPS_BIOS_IMAGE &&
1892                    pt->CoppCP.cmd.flashfw.direction == IPS_ERASE_BIOS) {
1893                 if (!ha->func.erasebios)
1894                         goto error;
1895                 if ((*ha->func.erasebios) (ha)) {
1896                         DEBUG_VAR(1,
1897                                   "(%s%d) flash bios failed - unable to erase flash",
1898                                   ips_name, ha->host_num);
1899                         goto error;
1900                 }
1901                 return IPS_SUCCESS_IMM;
1902         }
1903       error:
1904         pt->BasicStatus = 0x0B;
1905         pt->ExtendedStatus = 0x00;
1906         ips_free_flash_copperhead(ha);
1907         return IPS_FAILURE;
1908 }
1909
1910 /****************************************************************************/
1911 /*                                                                          */
1912 /* Routine Name: ips_fill_scb_sg_single                                     */
1913 /*                                                                          */
1914 /* Routine Description:                                                     */
1915 /*   Fill in a single scb sg_list element from an address                   */
1916 /*   return a -1 if a breakup occurred                                      */
1917 /****************************************************************************/
1918 static int
1919 ips_fill_scb_sg_single(ips_ha_t * ha, dma_addr_t busaddr,
1920                        ips_scb_t * scb, int indx, unsigned int e_len)
1921 {
1922
1923         int ret_val = 0;
1924
1925         if ((scb->data_len + e_len) > ha->max_xfer) {
1926                 e_len = ha->max_xfer - scb->data_len;
1927                 scb->breakup = indx;
1928                 ++scb->sg_break;
1929                 ret_val = -1;
1930         } else {
1931                 scb->breakup = 0;
1932                 scb->sg_break = 0;
1933         }
1934         if (IPS_USE_ENH_SGLIST(ha)) {
1935                 scb->sg_list.enh_list[indx].address_lo =
1936                     cpu_to_le32(pci_dma_lo32(busaddr));
1937                 scb->sg_list.enh_list[indx].address_hi =
1938                     cpu_to_le32(pci_dma_hi32(busaddr));
1939                 scb->sg_list.enh_list[indx].length = cpu_to_le32(e_len);
1940         } else {
1941                 scb->sg_list.std_list[indx].address =
1942                     cpu_to_le32(pci_dma_lo32(busaddr));
1943                 scb->sg_list.std_list[indx].length = cpu_to_le32(e_len);
1944         }
1945
1946         ++scb->sg_len;
1947         scb->data_len += e_len;
1948         return ret_val;
1949 }
1950
1951 /****************************************************************************/
1952 /* Routine Name: ips_flash_firmware                                         */
1953 /* Routine Description:                                                     */
1954 /*   flashes the firmware of a copperhead adapter                           */
1955 /****************************************************************************/
1956 static int
1957 ips_flash_firmware(ips_ha_t * ha, ips_passthru_t * pt, ips_scb_t * scb)
1958 {
1959         IPS_SG_LIST sg_list;
1960         uint32_t cmd_busaddr;
1961
1962         if (pt->CoppCP.cmd.flashfw.type == IPS_FW_IMAGE &&
1963             pt->CoppCP.cmd.flashfw.direction == IPS_WRITE_FW) {
1964                 memset(&pt->CoppCP.cmd, 0, sizeof (IPS_HOST_COMMAND));
1965                 pt->CoppCP.cmd.flashfw.op_code = IPS_CMD_DOWNLOAD;
1966                 pt->CoppCP.cmd.flashfw.count = cpu_to_le32(ha->flash_datasize);
1967         } else {
1968                 pt->BasicStatus = 0x0B;
1969                 pt->ExtendedStatus = 0x00;
1970                 ips_free_flash_copperhead(ha);
1971                 return IPS_FAILURE;
1972         }
1973         /* Save the S/G list pointer so it doesn't get clobbered */
1974         sg_list.list = scb->sg_list.list;
1975         cmd_busaddr = scb->scb_busaddr;
1976         /* copy in the CP */
1977         memcpy(&scb->cmd, &pt->CoppCP.cmd, sizeof (IPS_IOCTL_CMD));
1978         /* FIX stuff that might be wrong */
1979         scb->sg_list.list = sg_list.list;
1980         scb->scb_busaddr = cmd_busaddr;
1981         scb->bus = scb->scsi_cmd->device->channel;
1982         scb->target_id = scb->scsi_cmd->device->id;
1983         scb->lun = scb->scsi_cmd->device->lun;
1984         scb->sg_len = 0;
1985         scb->data_len = 0;
1986         scb->flags = 0;
1987         scb->op_code = 0;
1988         scb->callback = ipsintr_done;
1989         scb->timeout = ips_cmd_timeout;
1990
1991         scb->data_len = ha->flash_datasize;
1992         scb->data_busaddr =
1993             pci_map_single(ha->pcidev, ha->flash_data, scb->data_len,
1994                            IPS_DMA_DIR(scb));
1995         scb->flags |= IPS_SCB_MAP_SINGLE;
1996         scb->cmd.flashfw.command_id = IPS_COMMAND_ID(ha, scb);
1997         scb->cmd.flashfw.buffer_addr = cpu_to_le32(scb->data_busaddr);
1998         if (pt->TimeOut)
1999                 scb->timeout = pt->TimeOut;
2000         scb->scsi_cmd->result = DID_OK << 16;
2001         return IPS_SUCCESS;
2002 }
2003
2004 /****************************************************************************/
2005 /* Routine Name: ips_free_flash_copperhead                                  */
2006 /* Routine Description:                                                     */
2007 /*   release the memory resources used to hold the flash image              */
2008 /****************************************************************************/
2009 static void
2010 ips_free_flash_copperhead(ips_ha_t * ha)
2011 {
2012         if (ha->flash_data == ips_FlashData)
2013                 test_and_clear_bit(0, &ips_FlashDataInUse);
2014         else if (ha->flash_data)
2015                 pci_free_consistent(ha->pcidev, ha->flash_len, ha->flash_data,
2016                                     ha->flash_busaddr);
2017         ha->flash_data = NULL;
2018 }
2019
2020 /****************************************************************************/
2021 /*                                                                          */
2022 /* Routine Name: ips_usrcmd                                                 */
2023 /*                                                                          */
2024 /* Routine Description:                                                     */
2025 /*                                                                          */
2026 /*   Process a user command and make it ready to send                       */
2027 /*                                                                          */
2028 /****************************************************************************/
2029 static int
2030 ips_usrcmd(ips_ha_t * ha, ips_passthru_t * pt, ips_scb_t * scb)
2031 {
2032         IPS_SG_LIST sg_list;
2033         uint32_t cmd_busaddr;
2034
2035         METHOD_TRACE("ips_usrcmd", 1);
2036
2037         if ((!scb) || (!pt) || (!ha))
2038                 return (0);
2039
2040         /* Save the S/G list pointer so it doesn't get clobbered */
2041         sg_list.list = scb->sg_list.list;
2042         cmd_busaddr = scb->scb_busaddr;
2043         /* copy in the CP */
2044         memcpy(&scb->cmd, &pt->CoppCP.cmd, sizeof (IPS_IOCTL_CMD));
2045         memcpy(&scb->dcdb, &pt->CoppCP.dcdb, sizeof (IPS_DCDB_TABLE));
2046
2047         /* FIX stuff that might be wrong */
2048         scb->sg_list.list = sg_list.list;
2049         scb->scb_busaddr = cmd_busaddr;
2050         scb->bus = scb->scsi_cmd->device->channel;
2051         scb->target_id = scb->scsi_cmd->device->id;
2052         scb->lun = scb->scsi_cmd->device->lun;
2053         scb->sg_len = 0;
2054         scb->data_len = 0;
2055         scb->flags = 0;
2056         scb->op_code = 0;
2057         scb->callback = ipsintr_done;
2058         scb->timeout = ips_cmd_timeout;
2059         scb->cmd.basic_io.command_id = IPS_COMMAND_ID(ha, scb);
2060
2061         /* we don't support DCDB/READ/WRITE Scatter Gather */
2062         if ((scb->cmd.basic_io.op_code == IPS_CMD_READ_SG) ||
2063             (scb->cmd.basic_io.op_code == IPS_CMD_WRITE_SG) ||
2064             (scb->cmd.basic_io.op_code == IPS_CMD_DCDB_SG))
2065                 return (0);
2066
2067         if (pt->CmdBSize) {
2068                 scb->data_len = pt->CmdBSize;
2069                 scb->data_busaddr = ha->ioctl_busaddr + sizeof (ips_passthru_t);
2070         } else {
2071                 scb->data_busaddr = 0L;
2072         }
2073
2074         if (scb->cmd.dcdb.op_code == IPS_CMD_DCDB)
2075                 scb->cmd.dcdb.dcdb_address = cpu_to_le32(scb->scb_busaddr +
2076                                                          (unsigned long) &scb->
2077                                                          dcdb -
2078                                                          (unsigned long) scb);
2079
2080         if (pt->CmdBSize) {
2081                 if (scb->cmd.dcdb.op_code == IPS_CMD_DCDB)
2082                         scb->dcdb.buffer_pointer =
2083                             cpu_to_le32(scb->data_busaddr);
2084                 else
2085                         scb->cmd.basic_io.sg_addr =
2086                             cpu_to_le32(scb->data_busaddr);
2087         }
2088
2089         /* set timeouts */
2090         if (pt->TimeOut) {
2091                 scb->timeout = pt->TimeOut;
2092
2093                 if (pt->TimeOut <= 10)
2094                         scb->dcdb.cmd_attribute |= IPS_TIMEOUT10;
2095                 else if (pt->TimeOut <= 60)
2096                         scb->dcdb.cmd_attribute |= IPS_TIMEOUT60;
2097                 else
2098                         scb->dcdb.cmd_attribute |= IPS_TIMEOUT20M;
2099         }
2100
2101         /* assume success */
2102         scb->scsi_cmd->result = DID_OK << 16;
2103
2104         /* success */
2105         return (1);
2106 }
2107
2108 /****************************************************************************/
2109 /*                                                                          */
2110 /* Routine Name: ips_cleanup_passthru                                       */
2111 /*                                                                          */
2112 /* Routine Description:                                                     */
2113 /*                                                                          */
2114 /*   Cleanup after a passthru command                                       */
2115 /*                                                                          */
2116 /****************************************************************************/
2117 static void
2118 ips_cleanup_passthru(ips_ha_t * ha, ips_scb_t * scb)
2119 {
2120         ips_passthru_t *pt;
2121
2122         METHOD_TRACE("ips_cleanup_passthru", 1);
2123
2124         if ((!scb) || (!scb->scsi_cmd) || (!scb->scsi_cmd->request_buffer)) {
2125                 DEBUG_VAR(1, "(%s%d) couldn't cleanup after passthru",
2126                           ips_name, ha->host_num);
2127
2128                 return;
2129         }
2130         pt = (ips_passthru_t *) ha->ioctl_data;
2131
2132         /* Copy data back to the user */
2133         if (scb->cmd.dcdb.op_code == IPS_CMD_DCDB)      /* Copy DCDB Back to Caller's Area */
2134                 memcpy(&pt->CoppCP.dcdb, &scb->dcdb, sizeof (IPS_DCDB_TABLE));
2135
2136         pt->BasicStatus = scb->basic_status;
2137         pt->ExtendedStatus = scb->extended_status;
2138         pt->AdapterType = ha->ad_type;
2139
2140         if (ha->device_id == IPS_DEVICEID_COPPERHEAD &&
2141             (scb->cmd.flashfw.op_code == IPS_CMD_DOWNLOAD ||
2142              scb->cmd.flashfw.op_code == IPS_CMD_RW_BIOSFW))
2143                 ips_free_flash_copperhead(ha);
2144
2145         ips_scmd_buf_write(scb->scsi_cmd, ha->ioctl_data, ha->ioctl_datasize);
2146 }
2147
2148 /****************************************************************************/
2149 /*                                                                          */
2150 /* Routine Name: ips_host_info                                              */
2151 /*                                                                          */
2152 /* Routine Description:                                                     */
2153 /*                                                                          */
2154 /*   The passthru interface for the driver                                  */
2155 /*                                                                          */
2156 /****************************************************************************/
2157 static int
2158 ips_host_info(ips_ha_t * ha, char *ptr, off_t offset, int len)
2159 {
2160         IPS_INFOSTR info;
2161
2162         METHOD_TRACE("ips_host_info", 1);
2163
2164         info.buffer = ptr;
2165         info.length = len;
2166         info.offset = offset;
2167         info.pos = 0;
2168         info.localpos = 0;
2169
2170         copy_info(&info, "\nIBM ServeRAID General Information:\n\n");
2171
2172         if ((le32_to_cpu(ha->nvram->signature) == IPS_NVRAM_P5_SIG) &&
2173             (le16_to_cpu(ha->nvram->adapter_type) != 0))
2174                 copy_info(&info, "\tController Type                   : %s\n",
2175                           ips_adapter_name[ha->ad_type - 1]);
2176         else
2177                 copy_info(&info,
2178                           "\tController Type                   : Unknown\n");
2179
2180         if (ha->io_addr)
2181                 copy_info(&info,
2182                           "\tIO region                         : 0x%lx (%d bytes)\n",
2183                           ha->io_addr, ha->io_len);
2184
2185         if (ha->mem_addr) {
2186                 copy_info(&info,
2187                           "\tMemory region                     : 0x%lx (%d bytes)\n",
2188                           ha->mem_addr, ha->mem_len);
2189                 copy_info(&info,
2190                           "\tShared memory address             : 0x%lx\n",
2191                           ha->mem_ptr);
2192         }
2193
2194         copy_info(&info, "\tIRQ number                        : %d\n", ha->irq);
2195
2196     /* For the Next 3 lines Check for Binary 0 at the end and don't include it if it's there. */
2197     /* That keeps everything happy for "text" operations on the proc file.                    */
2198
2199         if (le32_to_cpu(ha->nvram->signature) == IPS_NVRAM_P5_SIG) {
2200         if (ha->nvram->bios_low[3] == 0) { 
2201             copy_info(&info,
2202                                   "\tBIOS Version                      : %c%c%c%c%c%c%c\n",
2203                                   ha->nvram->bios_high[0], ha->nvram->bios_high[1],
2204                                   ha->nvram->bios_high[2], ha->nvram->bios_high[3],
2205                                   ha->nvram->bios_low[0], ha->nvram->bios_low[1],
2206                                   ha->nvram->bios_low[2]);
2207
2208         } else {
2209                     copy_info(&info,
2210                                   "\tBIOS Version                      : %c%c%c%c%c%c%c%c\n",
2211                                   ha->nvram->bios_high[0], ha->nvram->bios_high[1],
2212                                   ha->nvram->bios_high[2], ha->nvram->bios_high[3],
2213                                   ha->nvram->bios_low[0], ha->nvram->bios_low[1],
2214                                   ha->nvram->bios_low[2], ha->nvram->bios_low[3]);
2215         }
2216
2217     }
2218
2219     if (ha->enq->CodeBlkVersion[7] == 0) {
2220         copy_info(&info,
2221                           "\tFirmware Version                  : %c%c%c%c%c%c%c\n",
2222                           ha->enq->CodeBlkVersion[0], ha->enq->CodeBlkVersion[1],
2223                           ha->enq->CodeBlkVersion[2], ha->enq->CodeBlkVersion[3],
2224                           ha->enq->CodeBlkVersion[4], ha->enq->CodeBlkVersion[5],
2225                           ha->enq->CodeBlkVersion[6]);
2226     } else {
2227         copy_info(&info,
2228                           "\tFirmware Version                  : %c%c%c%c%c%c%c%c\n",
2229                           ha->enq->CodeBlkVersion[0], ha->enq->CodeBlkVersion[1],
2230                           ha->enq->CodeBlkVersion[2], ha->enq->CodeBlkVersion[3],
2231                           ha->enq->CodeBlkVersion[4], ha->enq->CodeBlkVersion[5],
2232                           ha->enq->CodeBlkVersion[6], ha->enq->CodeBlkVersion[7]);
2233     }
2234
2235     if (ha->enq->BootBlkVersion[7] == 0) {
2236         copy_info(&info,
2237                           "\tBoot Block Version                : %c%c%c%c%c%c%c\n",
2238                           ha->enq->BootBlkVersion[0], ha->enq->BootBlkVersion[1],
2239                           ha->enq->BootBlkVersion[2], ha->enq->BootBlkVersion[3],
2240                           ha->enq->BootBlkVersion[4], ha->enq->BootBlkVersion[5],
2241                           ha->enq->BootBlkVersion[6]);
2242     } else {
2243         copy_info(&info,
2244                           "\tBoot Block Version                : %c%c%c%c%c%c%c%c\n",
2245                           ha->enq->BootBlkVersion[0], ha->enq->BootBlkVersion[1],
2246                           ha->enq->BootBlkVersion[2], ha->enq->BootBlkVersion[3],
2247                           ha->enq->BootBlkVersion[4], ha->enq->BootBlkVersion[5],
2248                           ha->enq->BootBlkVersion[6], ha->enq->BootBlkVersion[7]);
2249     }
2250
2251         copy_info(&info, "\tDriver Version                    : %s%s\n",
2252                   IPS_VERSION_HIGH, IPS_VERSION_LOW);
2253
2254         copy_info(&info, "\tDriver Build                      : %d\n",
2255                   IPS_BUILD_IDENT);
2256
2257         copy_info(&info, "\tMax Physical Devices              : %d\n",
2258                   ha->enq->ucMaxPhysicalDevices);
2259         copy_info(&info, "\tMax Active Commands               : %d\n",
2260                   ha->max_cmds);
2261         copy_info(&info, "\tCurrent Queued Commands           : %d\n",
2262                   ha->scb_waitlist.count);
2263         copy_info(&info, "\tCurrent Active Commands           : %d\n",
2264                   ha->scb_activelist.count - ha->num_ioctl);
2265         copy_info(&info, "\tCurrent Queued PT Commands        : %d\n",
2266                   ha->copp_waitlist.count);
2267         copy_info(&info, "\tCurrent Active PT Commands        : %d\n",
2268                   ha->num_ioctl);
2269
2270         copy_info(&info, "\n");
2271
2272         return (info.localpos);
2273 }
2274
2275 /****************************************************************************/
2276 /*                                                                          */
2277 /* Routine Name: copy_mem_info                                              */
2278 /*                                                                          */
2279 /* Routine Description:                                                     */
2280 /*                                                                          */
2281 /*   Copy data into an IPS_INFOSTR structure                                */
2282 /*                                                                          */
2283 /****************************************************************************/
2284 static void
2285 copy_mem_info(IPS_INFOSTR * info, char *data, int len)
2286 {
2287         METHOD_TRACE("copy_mem_info", 1);
2288
2289         if (info->pos + len < info->offset) {
2290                 info->pos += len;
2291                 return;
2292         }
2293
2294         if (info->pos < info->offset) {
2295                 data += (info->offset - info->pos);
2296                 len -= (info->offset - info->pos);
2297                 info->pos += (info->offset - info->pos);
2298         }
2299
2300         if (info->localpos + len > info->length)
2301                 len = info->length - info->localpos;
2302
2303         if (len > 0) {
2304                 memcpy(info->buffer + info->localpos, data, len);
2305                 info->pos += len;
2306                 info->localpos += len;
2307         }
2308 }
2309
2310 /****************************************************************************/
2311 /*                                                                          */
2312 /* Routine Name: copy_info                                                  */
2313 /*                                                                          */
2314 /* Routine Description:                                                     */
2315 /*                                                                          */
2316 /*   printf style wrapper for an info structure                             */
2317 /*                                                                          */
2318 /****************************************************************************/
2319 static int
2320 copy_info(IPS_INFOSTR * info, char *fmt, ...)
2321 {
2322         va_list args;
2323         char buf[128];
2324         int len;
2325
2326         METHOD_TRACE("copy_info", 1);
2327
2328         va_start(args, fmt);
2329         len = vsprintf(buf, fmt, args);
2330         va_end(args);
2331
2332         copy_mem_info(info, buf, len);
2333
2334         return (len);
2335 }
2336
2337 /****************************************************************************/
2338 /*                                                                          */
2339 /* Routine Name: ips_identify_controller                                    */
2340 /*                                                                          */
2341 /* Routine Description:                                                     */
2342 /*                                                                          */
2343 /*   Identify this controller                                               */
2344 /*                                                                          */
2345 /****************************************************************************/
2346 static void
2347 ips_identify_controller(ips_ha_t * ha)
2348 {
2349         METHOD_TRACE("ips_identify_controller", 1);
2350
2351         switch (ha->device_id) {
2352         case IPS_DEVICEID_COPPERHEAD:
2353                 if (ha->revision_id <= IPS_REVID_SERVERAID) {
2354                         ha->ad_type = IPS_ADTYPE_SERVERAID;
2355                 } else if (ha->revision_id == IPS_REVID_SERVERAID2) {
2356                         ha->ad_type = IPS_ADTYPE_SERVERAID2;
2357                 } else if (ha->revision_id == IPS_REVID_NAVAJO) {
2358                         ha->ad_type = IPS_ADTYPE_NAVAJO;
2359                 } else if ((ha->revision_id == IPS_REVID_SERVERAID2)
2360                            && (ha->slot_num == 0)) {
2361                         ha->ad_type = IPS_ADTYPE_KIOWA;
2362                 } else if ((ha->revision_id >= IPS_REVID_CLARINETP1) &&
2363                            (ha->revision_id <= IPS_REVID_CLARINETP3)) {
2364                         if (ha->enq->ucMaxPhysicalDevices == 15)
2365                                 ha->ad_type = IPS_ADTYPE_SERVERAID3L;
2366                         else
2367                                 ha->ad_type = IPS_ADTYPE_SERVERAID3;
2368                 } else if ((ha->revision_id >= IPS_REVID_TROMBONE32) &&
2369                            (ha->revision_id <= IPS_REVID_TROMBONE64)) {
2370                         ha->ad_type = IPS_ADTYPE_SERVERAID4H;
2371                 }
2372                 break;
2373
2374         case IPS_DEVICEID_MORPHEUS:
2375                 switch (ha->subdevice_id) {
2376                 case IPS_SUBDEVICEID_4L:
2377                         ha->ad_type = IPS_ADTYPE_SERVERAID4L;
2378                         break;
2379
2380                 case IPS_SUBDEVICEID_4M:
2381                         ha->ad_type = IPS_ADTYPE_SERVERAID4M;
2382                         break;
2383
2384                 case IPS_SUBDEVICEID_4MX:
2385                         ha->ad_type = IPS_ADTYPE_SERVERAID4MX;
2386                         break;
2387
2388                 case IPS_SUBDEVICEID_4LX:
2389                         ha->ad_type = IPS_ADTYPE_SERVERAID4LX;
2390                         break;
2391
2392                 case IPS_SUBDEVICEID_5I2:
2393                         ha->ad_type = IPS_ADTYPE_SERVERAID5I2;
2394                         break;
2395
2396                 case IPS_SUBDEVICEID_5I1:
2397                         ha->ad_type = IPS_ADTYPE_SERVERAID5I1;
2398                         break;
2399                 }
2400
2401                 break;
2402
2403         case IPS_DEVICEID_MARCO:
2404                 switch (ha->subdevice_id) {
2405                 case IPS_SUBDEVICEID_6M:
2406                         ha->ad_type = IPS_ADTYPE_SERVERAID6M;
2407                         break;
2408                 case IPS_SUBDEVICEID_6I:
2409                         ha->ad_type = IPS_ADTYPE_SERVERAID6I;
2410                         break;
2411                 case IPS_SUBDEVICEID_7k:
2412                         ha->ad_type = IPS_ADTYPE_SERVERAID7k;
2413                         break;
2414                 case IPS_SUBDEVICEID_7M:
2415                         ha->ad_type = IPS_ADTYPE_SERVERAID7M;
2416                         break;
2417                 }
2418                 break;
2419         }
2420 }
2421
2422 /****************************************************************************/
2423 /*                                                                          */
2424 /* Routine Name: ips_get_bios_version                                       */
2425 /*                                                                          */
2426 /* Routine Description:                                                     */
2427 /*                                                                          */
2428 /*   Get the BIOS revision number                                           */
2429 /*                                                                          */
2430 /****************************************************************************/
2431 static void
2432 ips_get_bios_version(ips_ha_t * ha, int intr)
2433 {
2434         ips_scb_t *scb;
2435         int ret;
2436         uint8_t major;
2437         uint8_t minor;
2438         uint8_t subminor;
2439         uint8_t *buffer;
2440         char hexDigits[] =
2441             { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C',
2442      'D', 'E', 'F' };
2443
2444         METHOD_TRACE("ips_get_bios_version", 1);
2445
2446         major = 0;
2447         minor = 0;
2448
2449         strncpy(ha->bios_version, "       ?", 8);
2450
2451         if (ha->device_id == IPS_DEVICEID_COPPERHEAD) {
2452                 if (IPS_USE_MEMIO(ha)) {
2453                         /* Memory Mapped I/O */
2454
2455                         /* test 1st byte */
2456                         writel(0, ha->mem_ptr + IPS_REG_FLAP);
2457                         if (ha->revision_id == IPS_REVID_TROMBONE64)
2458                                 udelay(25);     /* 25 us */
2459
2460                         if (readb(ha->mem_ptr + IPS_REG_FLDP) != 0x55)
2461                                 return;
2462
2463                         writel(1, ha->mem_ptr + IPS_REG_FLAP);
2464                         if (ha->revision_id == IPS_REVID_TROMBONE64)
2465                                 udelay(25);     /* 25 us */
2466
2467                         if (readb(ha->mem_ptr + IPS_REG_FLDP) != 0xAA)
2468                                 return;
2469
2470                         /* Get Major version */
2471                         writel(0x1FF, ha->mem_ptr + IPS_REG_FLAP);
2472                         if (ha->revision_id == IPS_REVID_TROMBONE64)
2473                                 udelay(25);     /* 25 us */
2474
2475                         major = readb(ha->mem_ptr + IPS_REG_FLDP);
2476
2477                         /* Get Minor version */
2478                         writel(0x1FE, ha->mem_ptr + IPS_REG_FLAP);
2479                         if (ha->revision_id == IPS_REVID_TROMBONE64)
2480                                 udelay(25);     /* 25 us */
2481                         minor = readb(ha->mem_ptr + IPS_REG_FLDP);
2482
2483                         /* Get SubMinor version */
2484                         writel(0x1FD, ha->mem_ptr + IPS_REG_FLAP);
2485                         if (ha->revision_id == IPS_REVID_TROMBONE64)
2486                                 udelay(25);     /* 25 us */
2487                         subminor = readb(ha->mem_ptr + IPS_REG_FLDP);
2488
2489                 } else {
2490                         /* Programmed I/O */
2491
2492                         /* test 1st byte */
2493                         outl(0, ha->io_addr + IPS_REG_FLAP);
2494                         if (ha->revision_id == IPS_REVID_TROMBONE64)
2495                                 udelay(25);     /* 25 us */
2496
2497                         if (inb(ha->io_addr + IPS_REG_FLDP) != 0x55)
2498                                 return;
2499
2500                         outl(cpu_to_le32(1), ha->io_addr + IPS_REG_FLAP);
2501                         if (ha->revision_id == IPS_REVID_TROMBONE64)
2502                                 udelay(25);     /* 25 us */
2503
2504                         if (inb(ha->io_addr + IPS_REG_FLDP) != 0xAA)
2505                                 return;
2506
2507                         /* Get Major version */
2508                         outl(cpu_to_le32(0x1FF), ha->io_addr + IPS_REG_FLAP);
2509                         if (ha->revision_id == IPS_REVID_TROMBONE64)
2510                                 udelay(25);     /* 25 us */
2511
2512                         major = inb(ha->io_addr + IPS_REG_FLDP);
2513
2514                         /* Get Minor version */
2515                         outl(cpu_to_le32(0x1FE), ha->io_addr + IPS_REG_FLAP);
2516                         if (ha->revision_id == IPS_REVID_TROMBONE64)
2517                                 udelay(25);     /* 25 us */
2518
2519                         minor = inb(ha->io_addr + IPS_REG_FLDP);
2520
2521                         /* Get SubMinor version */
2522                         outl(cpu_to_le32(0x1FD), ha->io_addr + IPS_REG_FLAP);
2523                         if (ha->revision_id == IPS_REVID_TROMBONE64)
2524                                 udelay(25);     /* 25 us */
2525
2526                         subminor = inb(ha->io_addr + IPS_REG_FLDP);
2527
2528                 }
2529         } else {
2530                 /* Morpheus Family - Send Command to the card */
2531
2532                 buffer = ha->ioctl_data;
2533
2534                 memset(buffer, 0, 0x1000);
2535
2536                 scb = &ha->scbs[ha->max_cmds - 1];
2537
2538                 ips_init_scb(ha, scb);
2539
2540                 scb->timeout = ips_cmd_timeout;
2541                 scb->cdb[0] = IPS_CMD_RW_BIOSFW;
2542
2543                 scb->cmd.flashfw.op_code = IPS_CMD_RW_BIOSFW;
2544                 scb->cmd.flashfw.command_id = IPS_COMMAND_ID(ha, scb);
2545                 scb->cmd.flashfw.type = 1;
2546                 scb->cmd.flashfw.direction = 0;
2547                 scb->cmd.flashfw.count = cpu_to_le32(0x800);
2548                 scb->cmd.flashfw.total_packets = 1;
2549                 scb->cmd.flashfw.packet_num = 0;
2550                 scb->data_len = 0x1000;
2551                 scb->cmd.flashfw.buffer_addr = ha->ioctl_busaddr;
2552
2553                 /* issue the command */
2554                 if (((ret =
2555                       ips_send_wait(ha, scb, ips_cmd_timeout,
2556                                     intr)) == IPS_FAILURE)
2557                     || (ret == IPS_SUCCESS_IMM)
2558                     || ((scb->basic_status & IPS_GSC_STATUS_MASK) > 1)) {
2559                         /* Error occurred */
2560
2561                         return;
2562                 }
2563
2564                 if ((buffer[0xC0] == 0x55) && (buffer[0xC1] == 0xAA)) {
2565                         major = buffer[0x1ff + 0xC0];   /* Offset 0x1ff after the header (0xc0) */
2566                         minor = buffer[0x1fe + 0xC0];   /* Offset 0x1fe after the header (0xc0) */
2567                         subminor = buffer[0x1fd + 0xC0];        /* Offset 0x1fd after the header (0xc0) */
2568                 } else {
2569                         return;
2570                 }
2571         }
2572
2573         ha->bios_version[0] = hexDigits[(major & 0xF0) >> 4];
2574         ha->bios_version[1] = '.';
2575         ha->bios_version[2] = hexDigits[major & 0x0F];
2576         ha->bios_version[3] = hexDigits[subminor];
2577         ha->bios_version[4] = '.';
2578         ha->bios_version[5] = hexDigits[(minor & 0xF0) >> 4];
2579         ha->bios_version[6] = hexDigits[minor & 0x0F];
2580         ha->bios_version[7] = 0;
2581 }
2582
2583 /****************************************************************************/
2584 /*                                                                          */
2585 /* Routine Name: ips_hainit                                                 */
2586 /*                                                                          */
2587 /* Routine Description:                                                     */
2588 /*                                                                          */
2589 /*   Initialize the controller                                              */
2590 /*                                                                          */
2591 /* NOTE: Assumes to be called from with a lock                              */
2592 /*                                                                          */
2593 /****************************************************************************/
2594 static int
2595 ips_hainit(ips_ha_t * ha)
2596 {
2597         int i;
2598         struct timeval tv;
2599
2600         METHOD_TRACE("ips_hainit", 1);
2601
2602         if (!ha)
2603                 return (0);
2604
2605         if (ha->func.statinit)
2606                 (*ha->func.statinit) (ha);
2607
2608         if (ha->func.enableint)
2609                 (*ha->func.enableint) (ha);
2610
2611         /* Send FFDC */
2612         ha->reset_count = 1;
2613         do_gettimeofday(&tv);
2614         ha->last_ffdc = tv.tv_sec;
2615         ips_ffdc_reset(ha, IPS_INTR_IORL);
2616
2617         if (!ips_read_config(ha, IPS_INTR_IORL)) {
2618                 IPS_PRINTK(KERN_WARNING, ha->pcidev,
2619                            "unable to read config from controller.\n");
2620
2621                 return (0);
2622         }
2623         /* end if */
2624         if (!ips_read_adapter_status(ha, IPS_INTR_IORL)) {
2625                 IPS_PRINTK(KERN_WARNING, ha->pcidev,
2626                            "unable to read controller status.\n");
2627
2628                 return (0);
2629         }
2630
2631         /* Identify this controller */
2632         ips_identify_controller(ha);
2633
2634         if (!ips_read_subsystem_parameters(ha, IPS_INTR_IORL)) {
2635                 IPS_PRINTK(KERN_WARNING, ha->pcidev,
2636                            "unable to read subsystem parameters.\n");
2637
2638                 return (0);
2639         }
2640
2641         /* write nvram user page 5 */
2642         if (!ips_write_driver_status(ha, IPS_INTR_IORL)) {
2643                 IPS_PRINTK(KERN_WARNING, ha->pcidev,
2644                            "unable to write driver info to controller.\n");
2645
2646                 return (0);
2647         }
2648
2649         /* If there are Logical Drives and a Reset Occurred, then an EraseStripeLock is Needed */
2650         if ((ha->conf->ucLogDriveCount > 0) && (ha->requires_esl == 1))
2651                 ips_clear_adapter(ha, IPS_INTR_IORL);
2652
2653         /* set limits on SID, LUN, BUS */
2654         ha->ntargets = IPS_MAX_TARGETS + 1;
2655         ha->nlun = 1;
2656         ha->nbus = (ha->enq->ucMaxPhysicalDevices / IPS_MAX_TARGETS) + 1;
2657
2658         switch (ha->conf->logical_drive[0].ucStripeSize) {
2659         case 4:
2660                 ha->max_xfer = 0x10000;
2661                 break;
2662
2663         case 5:
2664                 ha->max_xfer = 0x20000;
2665                 break;
2666
2667         case 6:
2668                 ha->max_xfer = 0x40000;
2669                 break;
2670
2671         case 7:
2672         default:
2673                 ha->max_xfer = 0x80000;
2674                 break;
2675         }
2676
2677         /* setup max concurrent commands */
2678         if (le32_to_cpu(ha->subsys->param[4]) & 0x1) {
2679                 /* Use the new method */
2680                 ha->max_cmds = ha->enq->ucConcurrentCmdCount;
2681         } else {
2682                 /* use the old method */
2683                 switch (ha->conf->logical_drive[0].ucStripeSize) {
2684                 case 4:
2685                         ha->max_cmds = 32;
2686                         break;
2687
2688                 case 5:
2689                         ha->max_cmds = 16;
2690                         break;
2691
2692                 case 6:
2693                         ha->max_cmds = 8;
2694                         break;
2695
2696                 case 7:
2697                 default:
2698                         ha->max_cmds = 4;
2699                         break;
2700                 }
2701         }
2702
2703         /* Limit the Active Commands on a Lite Adapter */
2704         if ((ha->ad_type == IPS_ADTYPE_SERVERAID3L) ||
2705             (ha->ad_type == IPS_ADTYPE_SERVERAID4L) ||
2706             (ha->ad_type == IPS_ADTYPE_SERVERAID4LX)) {
2707                 if ((ha->max_cmds > MaxLiteCmds) && (MaxLiteCmds))
2708                         ha->max_cmds = MaxLiteCmds;
2709         }
2710
2711         /* set controller IDs */
2712         ha->ha_id[0] = IPS_ADAPTER_ID;
2713         for (i = 1; i < ha->nbus; i++) {
2714                 ha->ha_id[i] = ha->conf->init_id[i - 1] & 0x1f;
2715                 ha->dcdb_active[i - 1] = 0;
2716         }
2717
2718         return (1);
2719 }
2720
2721 /****************************************************************************/
2722 /*                                                                          */
2723 /* Routine Name: ips_next                                                   */
2724 /*                                                                          */
2725 /* Routine Description:                                                     */
2726 /*                                                                          */
2727 /*   Take the next command off the queue and send it to the controller      */
2728 /*                                                                          */
2729 /****************************************************************************/
2730 static void
2731 ips_next(ips_ha_t * ha, int intr)
2732 {
2733         ips_scb_t *scb;
2734         Scsi_Cmnd *SC;
2735         Scsi_Cmnd *p;
2736         Scsi_Cmnd *q;
2737         ips_copp_wait_item_t *item;
2738         int ret;
2739         unsigned long cpu_flags = 0;
2740         struct Scsi_Host *host;
2741         METHOD_TRACE("ips_next", 1);
2742
2743         if (!ha)
2744                 return;
2745         host = ips_sh[ha->host_num];
2746         /*
2747          * Block access to the queue function so
2748          * this command won't time out
2749          */
2750         if (intr == IPS_INTR_ON)
2751                 IPS_LOCK_SAVE(host->host_lock, cpu_flags);
2752
2753         if ((ha->subsys->param[3] & 0x300000)
2754             && (ha->scb_activelist.count == 0)) {
2755                 struct timeval tv;
2756
2757                 do_gettimeofday(&tv);
2758
2759                 if (tv.tv_sec - ha->last_ffdc > IPS_SECS_8HOURS) {
2760                         ha->last_ffdc = tv.tv_sec;
2761                         ips_ffdc_time(ha);
2762                 }
2763         }
2764
2765         /*
2766          * Send passthru commands
2767          * These have priority over normal I/O
2768          * but shouldn't affect performance too much
2769          * since we limit the number that can be active
2770          * on the card at any one time
2771          */
2772         while ((ha->num_ioctl < IPS_MAX_IOCTL) &&
2773                (ha->copp_waitlist.head) && (scb = ips_getscb(ha))) {
2774
2775                 item = ips_removeq_copp_head(&ha->copp_waitlist);
2776                 ha->num_ioctl++;
2777                 if (intr == IPS_INTR_ON)
2778                         IPS_UNLOCK_RESTORE(host->host_lock, cpu_flags);
2779                 scb->scsi_cmd = item->scsi_cmd;
2780                 kfree(item);
2781
2782                 ret = ips_make_passthru(ha, scb->scsi_cmd, scb, intr);
2783
2784                 if (intr == IPS_INTR_ON)
2785                         IPS_LOCK_SAVE(host->host_lock, cpu_flags);
2786                 switch (ret) {
2787                 case IPS_FAILURE:
2788                         if (scb->scsi_cmd) {
2789                                 scb->scsi_cmd->result = DID_ERROR << 16;
2790                                 scb->scsi_cmd->scsi_done(scb->scsi_cmd);
2791                         }
2792
2793                         ips_freescb(ha, scb);
2794                         break;
2795                 case IPS_SUCCESS_IMM:
2796                         if (scb->scsi_cmd) {
2797                                 scb->scsi_cmd->result = DID_OK << 16;
2798                                 scb->scsi_cmd->scsi_done(scb->scsi_cmd);
2799                         }
2800
2801                         ips_freescb(ha, scb);
2802                         break;
2803                 default:
2804                         break;
2805                 }               /* end case */
2806
2807                 if (ret != IPS_SUCCESS) {
2808                         ha->num_ioctl--;
2809                         continue;
2810                 }
2811
2812                 ret = ips_send_cmd(ha, scb);
2813
2814                 if (ret == IPS_SUCCESS)
2815                         ips_putq_scb_head(&ha->scb_activelist, scb);
2816                 else
2817                         ha->num_ioctl--;
2818
2819                 switch (ret) {
2820                 case IPS_FAILURE:
2821                         if (scb->scsi_cmd) {
2822                                 scb->scsi_cmd->result = DID_ERROR << 16;
2823                         }
2824
2825                         ips_freescb(ha, scb);
2826                         break;
2827                 case IPS_SUCCESS_IMM:
2828                         ips_freescb(ha, scb);
2829                         break;
2830                 default:
2831                         break;
2832                 }               /* end case */
2833
2834         }
2835
2836         /*
2837          * Send "Normal" I/O commands
2838          */
2839
2840         p = ha->scb_waitlist.head;
2841         while ((p) && (scb = ips_getscb(ha))) {
2842                 if ((scmd_channel(p) > 0)
2843                     && (ha->
2844                         dcdb_active[scmd_channel(p) -
2845                                     1] & (1 << scmd_id(p)))) {
2846                         ips_freescb(ha, scb);
2847                         p = (Scsi_Cmnd *) p->host_scribble;
2848                         continue;
2849                 }
2850
2851                 q = p;
2852                 SC = ips_removeq_wait(&ha->scb_waitlist, q);
2853
2854                 if (intr == IPS_INTR_ON)
2855                         IPS_UNLOCK_RESTORE(host->host_lock, cpu_flags); /* Unlock HA after command is taken off queue */
2856
2857                 SC->result = DID_OK;
2858                 SC->host_scribble = NULL;
2859
2860                 memset(SC->sense_buffer, 0, sizeof (SC->sense_buffer));
2861
2862                 scb->target_id = SC->device->id;
2863                 scb->lun = SC->device->lun;
2864                 scb->bus = SC->device->channel;
2865                 scb->scsi_cmd = SC;
2866                 scb->breakup = 0;
2867                 scb->data_len = 0;
2868                 scb->callback = ipsintr_done;
2869                 scb->timeout = ips_cmd_timeout;
2870                 memset(&scb->cmd, 0, 16);
2871
2872                 /* copy in the CDB */
2873                 memcpy(scb->cdb, SC->cmnd, SC->cmd_len);
2874
2875                 /* Now handle the data buffer */
2876                 if (SC->use_sg) {
2877                         struct scatterlist *sg;
2878                         int i;
2879
2880                         sg = SC->request_buffer;
2881                         scb->sg_count = pci_map_sg(ha->pcidev, sg, SC->use_sg,
2882                                                    SC->sc_data_direction);
2883                         scb->flags |= IPS_SCB_MAP_SG;
2884                         for (i = 0; i < scb->sg_count; i++) {
2885                                 if (ips_fill_scb_sg_single
2886                                     (ha, sg_dma_address(&sg[i]), scb, i,
2887                                      sg_dma_len(&sg[i])) < 0)
2888                                         break;
2889                         }
2890                         scb->dcdb.transfer_length = scb->data_len;
2891                 } else {
2892                         if (SC->request_bufflen) {
2893                                 scb->data_busaddr =
2894                                     pci_map_single(ha->pcidev,
2895                                                    SC->request_buffer,
2896                                                    SC->request_bufflen,
2897                                                    SC->sc_data_direction);
2898                                 scb->flags |= IPS_SCB_MAP_SINGLE;
2899                                 ips_fill_scb_sg_single(ha, scb->data_busaddr,
2900                                                        scb, 0,
2901                                                        SC->request_bufflen);
2902                                 scb->dcdb.transfer_length = scb->data_len;
2903                         } else {
2904                                 scb->data_busaddr = 0L;
2905                                 scb->sg_len = 0;
2906                                 scb->data_len = 0;
2907                                 scb->dcdb.transfer_length = 0;
2908                         }
2909
2910                 }
2911
2912                 scb->dcdb.cmd_attribute =
2913                     ips_command_direction[scb->scsi_cmd->cmnd[0]];
2914
2915         /* Allow a WRITE BUFFER Command to Have no Data */
2916         /* This is Used by Tape Flash Utilites          */
2917         if ((scb->scsi_cmd->cmnd[0] == WRITE_BUFFER) && (scb->data_len == 0)) 
2918             scb->dcdb.cmd_attribute = 0;                  
2919
2920                 if (!(scb->dcdb.cmd_attribute & 0x3))
2921                         scb->dcdb.transfer_length = 0;
2922
2923                 if (scb->data_len >= IPS_MAX_XFER) {
2924                         scb->dcdb.cmd_attribute |= IPS_TRANSFER64K;
2925                         scb->dcdb.transfer_length = 0;
2926                 }
2927                 if (intr == IPS_INTR_ON)
2928                         IPS_LOCK_SAVE(host->host_lock, cpu_flags);
2929
2930                 ret = ips_send_cmd(ha, scb);
2931
2932                 switch (ret) {
2933                 case IPS_SUCCESS:
2934                         ips_putq_scb_head(&ha->scb_activelist, scb);
2935                         break;
2936                 case IPS_FAILURE:
2937                         if (scb->scsi_cmd) {
2938                                 scb->scsi_cmd->result = DID_ERROR << 16;
2939                                 scb->scsi_cmd->scsi_done(scb->scsi_cmd);
2940                         }
2941
2942                         if (scb->bus)
2943                                 ha->dcdb_active[scb->bus - 1] &=
2944                                     ~(1 << scb->target_id);
2945
2946                         ips_freescb(ha, scb);
2947                         break;
2948                 case IPS_SUCCESS_IMM:
2949                         if (scb->scsi_cmd)
2950                                 scb->scsi_cmd->scsi_done(scb->scsi_cmd);
2951
2952                         if (scb->bus)
2953                                 ha->dcdb_active[scb->bus - 1] &=
2954                                     ~(1 << scb->target_id);
2955
2956                         ips_freescb(ha, scb);
2957                         break;
2958                 default:
2959                         break;
2960                 }               /* end case */
2961
2962                 p = (Scsi_Cmnd *) p->host_scribble;
2963
2964         }                       /* end while */
2965
2966         if (intr == IPS_INTR_ON)
2967                 IPS_UNLOCK_RESTORE(host->host_lock, cpu_flags);
2968 }
2969
2970 /****************************************************************************/
2971 /*                                                                          */
2972 /* Routine Name: ips_putq_scb_head                                          */
2973 /*                                                                          */
2974 /* Routine Description:                                                     */
2975 /*                                                                          */
2976 /*   Add an item to the head of the queue                                   */
2977 /*                                                                          */
2978 /* ASSUMED to be called from within the HA lock                             */
2979 /*                                                                          */
2980 /****************************************************************************/
2981 static void
2982 ips_putq_scb_head(ips_scb_queue_t * queue, ips_scb_t * item)
2983 {
2984         METHOD_TRACE("ips_putq_scb_head", 1);
2985
2986         if (!item)
2987                 return;
2988
2989         item->q_next = queue->head;
2990         queue->head = item;
2991
2992         if (!queue->tail)
2993                 queue->tail = item;
2994
2995         queue->count++;
2996 }
2997
2998 /****************************************************************************/
2999 /*                                                                          */
3000 /* Routine Name: ips_removeq_scb_head                                       */
3001 /*                                                                          */
3002 /* Routine Description:                                                     */
3003 /*                                                                          */
3004 /*   Remove the head of the queue                                           */
3005 /*                                                                          */
3006 /* ASSUMED to be called from within the HA lock                             */
3007 /*                                                                          */
3008 /****************************************************************************/
3009 static ips_scb_t *
3010 ips_removeq_scb_head(ips_scb_queue_t * queue)
3011 {
3012         ips_scb_t *item;
3013
3014         METHOD_TRACE("ips_removeq_scb_head", 1);
3015
3016         item = queue->head;
3017
3018         if (!item) {
3019                 return (NULL);
3020         }
3021
3022         queue->head = item->q_next;
3023         item->q_next = NULL;
3024
3025         if (queue->tail == item)
3026                 queue->tail = NULL;
3027
3028         queue->count--;
3029
3030         return (item);
3031 }
3032
3033 /****************************************************************************/
3034 /*                                                                          */
3035 /* Routine Name: ips_removeq_scb                                            */
3036 /*                                                                          */
3037 /* Routine Description:                                                     */
3038 /*                                                                          */
3039 /*   Remove an item from a queue                                            */
3040 /*                                                                          */
3041 /* ASSUMED to be called from within the HA lock                             */
3042 /*                                                                          */
3043 /****************************************************************************/
3044 static ips_scb_t *
3045 ips_removeq_scb(ips_scb_queue_t * queue, ips_scb_t * item)
3046 {
3047         ips_scb_t *p;
3048
3049         METHOD_TRACE("ips_removeq_scb", 1);
3050
3051         if (!item)
3052                 return (NULL);
3053
3054         if (item == queue->head) {
3055                 return (ips_removeq_scb_head(queue));
3056         }
3057
3058         p = queue->head;
3059
3060         while ((p) && (item != p->q_next))
3061                 p = p->q_next;
3062
3063         if (p) {
3064                 /* found a match */
3065                 p->q_next = item->q_next;
3066
3067                 if (!item->q_next)
3068                         queue->tail = p;
3069
3070                 item->q_next = NULL;
3071                 queue->count--;
3072
3073                 return (item);
3074         }
3075
3076         return (NULL);
3077 }
3078
3079 /****************************************************************************/
3080 /*                                                                          */
3081 /* Routine Name: ips_putq_wait_tail                                         */
3082 /*                                                                          */
3083 /* Routine Description:                                                     */
3084 /*                                                                          */
3085 /*   Add an item to the tail of the queue                                   */
3086 /*                                                                          */
3087 /* ASSUMED to be called from within the HA lock                             */
3088 /*                                                                          */
3089 /****************************************************************************/
3090 static void
3091 ips_putq_wait_tail(ips_wait_queue_t * queue, Scsi_Cmnd * item)
3092 {
3093         METHOD_TRACE("ips_putq_wait_tail", 1);
3094
3095         if (!item)
3096                 return;
3097
3098         item->host_scribble = NULL;
3099
3100         if (queue->tail)
3101                 queue->tail->host_scribble = (char *) item;
3102
3103         queue->tail = item;
3104
3105         if (!queue->head)
3106                 queue->head = item;
3107
3108         queue->count++;
3109 }
3110
3111 /****************************************************************************/
3112 /*                                                                          */
3113 /* Routine Name: ips_removeq_wait_head                                      */
3114 /*                                                                          */
3115 /* Routine Description:                                                     */
3116 /*                                                                          */
3117 /*   Remove the head of the queue                                           */
3118 /*                                                                          */
3119 /* ASSUMED to be called from within the HA lock                             */
3120 /*                                                                          */
3121 /****************************************************************************/
3122 static Scsi_Cmnd *
3123 ips_removeq_wait_head(ips_wait_queue_t * queue)
3124 {
3125         Scsi_Cmnd *item;
3126
3127         METHOD_TRACE("ips_removeq_wait_head", 1);
3128
3129         item = queue->head;
3130
3131         if (!item) {
3132                 return (NULL);
3133         }
3134
3135         queue->head = (Scsi_Cmnd *) item->host_scribble;
3136         item->host_scribble = NULL;
3137
3138         if (queue->tail == item)
3139                 queue->tail = NULL;
3140
3141         queue->count--;
3142
3143         return (item);
3144 }
3145
3146 /****************************************************************************/
3147 /*                                                                          */
3148 /* Routine Name: ips_removeq_wait                                           */
3149 /*                                                                          */
3150 /* Routine Description:                                                     */
3151 /*                                                                          */
3152 /*   Remove an item from a queue                                            */
3153 /*                                                                          */
3154 /* ASSUMED to be called from within the HA lock                             */
3155 /*                                                                          */
3156 /****************************************************************************/
3157 static Scsi_Cmnd *
3158 ips_removeq_wait(ips_wait_queue_t * queue, Scsi_Cmnd * item)
3159 {
3160         Scsi_Cmnd *p;
3161
3162         METHOD_TRACE("ips_removeq_wait", 1);
3163
3164         if (!item)
3165                 return (NULL);
3166
3167         if (item == queue->head) {
3168                 return (ips_removeq_wait_head(queue));
3169         }
3170
3171         p = queue->head;
3172
3173         while ((p) && (item != (Scsi_Cmnd *) p->host_scribble))
3174                 p = (Scsi_Cmnd *) p->host_scribble;
3175
3176         if (p) {
3177                 /* found a match */
3178                 p->host_scribble = item->host_scribble;
3179
3180                 if (!item->host_scribble)
3181                         queue->tail = p;
3182
3183                 item->host_scribble = NULL;
3184                 queue->count--;
3185
3186                 return (item);
3187         }
3188
3189         return (NULL);
3190 }
3191
3192 /****************************************************************************/
3193 /*                                                                          */
3194 /* Routine Name: ips_putq_copp_tail                                         */
3195 /*                                                                          */
3196 /* Routine Description:                                                     */
3197 /*                                                                          */
3198 /*   Add an item to the tail of the queue                                   */
3199 /*                                                                          */
3200 /* ASSUMED to be called from within the HA lock                             */
3201 /*                                                                          */
3202 /****************************************************************************/
3203 static void
3204 ips_putq_copp_tail(ips_copp_queue_t * queue, ips_copp_wait_item_t * item)
3205 {
3206         METHOD_TRACE("ips_putq_copp_tail", 1);
3207
3208         if (!item)
3209                 return;
3210
3211         item->next = NULL;
3212
3213         if (queue->tail)
3214                 queue->tail->next = item;
3215
3216         queue->tail = item;
3217
3218         if (!queue->head)
3219                 queue->head = item;
3220
3221         queue->count++;
3222 }
3223
3224 /****************************************************************************/
3225 /*                                                                          */
3226 /* Routine Name: ips_removeq_copp_head                                      */
3227 /*                                                                          */
3228 /* Routine Description:                                                     */
3229 /*                                                                          */
3230 /*   Remove the head of the queue                                           */
3231 /*                                                                          */
3232 /* ASSUMED to be called from within the HA lock                             */
3233 /*                                                                          */
3234 /****************************************************************************/
3235 static ips_copp_wait_item_t *
3236 ips_removeq_copp_head(ips_copp_queue_t * queue)
3237 {
3238         ips_copp_wait_item_t *item;
3239
3240         METHOD_TRACE("ips_removeq_copp_head", 1);
3241
3242         item = queue->head;
3243
3244         if (!item) {
3245                 return (NULL);
3246         }
3247
3248         queue->head = item->next;
3249         item->next = NULL;
3250
3251         if (queue->tail == item)
3252                 queue->tail = NULL;
3253
3254         queue->count--;
3255
3256         return (item);
3257 }
3258
3259 /****************************************************************************/
3260 /*                                                                          */
3261 /* Routine Name: ips_removeq_copp                                           */
3262 /*                                                                          */
3263 /* Routine Description:                                                     */
3264 /*                                                                          */
3265 /*   Remove an item from a queue                                            */
3266 /*                                                                          */
3267 /* ASSUMED to be called from within the HA lock                             */
3268 /*                                                                          */
3269 /****************************************************************************/
3270 static ips_copp_wait_item_t *
3271 ips_removeq_copp(ips_copp_queue_t * queue, ips_copp_wait_item_t * item)
3272 {
3273         ips_copp_wait_item_t *p;
3274
3275         METHOD_TRACE("ips_removeq_copp", 1);
3276
3277         if (!item)
3278                 return (NULL);
3279
3280         if (item == queue->head) {
3281                 return (ips_removeq_copp_head(queue));
3282         }
3283
3284         p = queue->head;
3285
3286         while ((p) && (item != p->next))
3287                 p = p->next;
3288
3289         if (p) {
3290                 /* found a match */
3291                 p->next = item->next;
3292
3293                 if (!item->next)
3294                         queue->tail = p;
3295
3296                 item->next = NULL;
3297                 queue->count--;
3298
3299                 return (item);
3300         }
3301
3302         return (NULL);
3303 }
3304
3305 /****************************************************************************/
3306 /*                                                                          */
3307 /* Routine Name: ipsintr_blocking                                           */
3308 /*                                                                          */
3309 /* Routine Description:                                                     */
3310 /*                                                                          */
3311 /*   Finalize an interrupt for internal commands                            */
3312 /*                                                                          */
3313 /****************************************************************************/
3314 static void
3315 ipsintr_blocking(ips_ha_t * ha, ips_scb_t * scb)
3316 {
3317         METHOD_TRACE("ipsintr_blocking", 2);
3318
3319         ips_freescb(ha, scb);
3320         if ((ha->waitflag == TRUE) && (ha->cmd_in_progress == scb->cdb[0])) {
3321                 ha->waitflag = FALSE;
3322
3323                 return;
3324         }
3325 }
3326
3327 /****************************************************************************/
3328 /*                                                                          */
3329 /* Routine Name: ipsintr_done                                               */
3330 /*                                                                          */
3331 /* Routine Description:                                                     */
3332 /*                                                                          */
3333 /*   Finalize an interrupt for non-internal commands                        */
3334 /*                                                                          */
3335 /****************************************************************************/
3336 static void
3337 ipsintr_done(ips_ha_t * ha, ips_scb_t * scb)
3338 {
3339         METHOD_TRACE("ipsintr_done", 2);
3340
3341         if (!scb) {
3342                 IPS_PRINTK(KERN_WARNING, ha->pcidev,
3343                            "Spurious interrupt; scb NULL.\n");
3344
3345                 return;
3346         }
3347
3348         if (scb->scsi_cmd == NULL) {
3349                 /* unexpected interrupt */
3350                 IPS_PRINTK(KERN_WARNING, ha->pcidev,
3351                            "Spurious interrupt; scsi_cmd not set.\n");
3352
3353                 return;
3354         }
3355
3356         ips_done(ha, scb);
3357 }
3358
3359 /****************************************************************************/
3360 /*                                                                          */
3361 /* Routine Name: ips_done                                                   */
3362 /*                                                                          */
3363 /* Routine Description:                                                     */
3364 /*                                                                          */
3365 /*   Do housekeeping on completed commands                                  */
3366 /*  ASSUMED to be called form within the request lock                       */
3367 /****************************************************************************/
3368 static void
3369 ips_done(ips_ha_t * ha, ips_scb_t * scb)
3370 {
3371         int ret;
3372
3373         METHOD_TRACE("ips_done", 1);
3374
3375         if (!scb)
3376                 return;
3377
3378         if ((scb->scsi_cmd) && (ips_is_passthru(scb->scsi_cmd))) {
3379                 ips_cleanup_passthru(ha, scb);
3380                 ha->num_ioctl--;
3381         } else {
3382                 /*
3383                  * Check to see if this command had too much
3384                  * data and had to be broke up.  If so, queue
3385                  * the rest of the data and continue.
3386                  */
3387                 if ((scb->breakup) || (scb->sg_break)) {
3388                         /* we had a data breakup */
3389                         scb->data_len = 0;
3390
3391                         if (scb->sg_count) {
3392                                 /* S/G request */
3393                                 struct scatterlist *sg;
3394                                 int ips_sg_index = 0;
3395                                 int sg_dma_index;
3396
3397                                 sg = scb->scsi_cmd->request_buffer;
3398
3399                                 /* Spin forward to last dma chunk */
3400                                 sg_dma_index = scb->breakup;
3401
3402                                 /* Take care of possible partial on last chunk */
3403                                 ips_fill_scb_sg_single(ha,
3404                                                        sg_dma_address(&sg
3405                                                                       [sg_dma_index]),
3406                                                        scb, ips_sg_index++,
3407                                                        sg_dma_len(&sg
3408                                                                   [sg_dma_index]));
3409
3410                                 for (; sg_dma_index < scb->sg_count;
3411                                      sg_dma_index++) {
3412                                         if (ips_fill_scb_sg_single
3413                                             (ha,
3414                                              sg_dma_address(&sg[sg_dma_index]),
3415                                              scb, ips_sg_index++,
3416                                              sg_dma_len(&sg[sg_dma_index])) < 0)
3417                                                 break;
3418
3419                                 }
3420
3421                         } else {
3422                                 /* Non S/G Request */
3423                                 (void) ips_fill_scb_sg_single(ha,
3424                                                               scb->
3425                                                               data_busaddr +
3426                                                               (scb->sg_break *
3427                                                                ha->max_xfer),
3428                                                               scb, 0,
3429                                                               scb->scsi_cmd->
3430                                                               request_bufflen -
3431                                                               (scb->sg_break *
3432                                                                ha->max_xfer));
3433                         }
3434
3435                         scb->dcdb.transfer_length = scb->data_len;
3436                         scb->dcdb.cmd_attribute |=
3437                             ips_command_direction[scb->scsi_cmd->cmnd[0]];
3438
3439                         if (!(scb->dcdb.cmd_attribute & 0x3))
3440                                 scb->dcdb.transfer_length = 0;
3441
3442                         if (scb->data_len >= IPS_MAX_XFER) {
3443                                 scb->dcdb.cmd_attribute |= IPS_TRANSFER64K;
3444                                 scb->dcdb.transfer_length = 0;
3445                         }
3446
3447                         ret = ips_send_cmd(ha, scb);
3448
3449                         switch (ret) {
3450                         case IPS_FAILURE:
3451                                 if (scb->scsi_cmd) {
3452                                         scb->scsi_cmd->result = DID_ERROR << 16;
3453                                         scb->scsi_cmd->scsi_done(scb->scsi_cmd);
3454                                 }
3455
3456                                 ips_freescb(ha, scb);
3457                                 break;
3458                         case IPS_SUCCESS_IMM:
3459                                 if (scb->scsi_cmd) {
3460                                         scb->scsi_cmd->result = DID_ERROR << 16;
3461                                         scb->scsi_cmd->scsi_done(scb->scsi_cmd);
3462                                 }
3463
3464                                 ips_freescb(ha, scb);
3465                                 break;
3466                         default:
3467                                 break;
3468                         }       /* end case */
3469
3470                         return;
3471                 }
3472         }                       /* end if passthru */
3473
3474         if (scb->bus) {
3475                 ha->dcdb_active[scb->bus - 1] &= ~(1 << scb->target_id);
3476         }
3477
3478         scb->scsi_cmd->scsi_done(scb->scsi_cmd);
3479
3480         ips_freescb(ha, scb);
3481 }
3482
3483 /****************************************************************************/
3484 /*                                                                          */
3485 /* Routine Name: ips_map_status                                             */
3486 /*                                                                          */
3487 /* Routine Description:                                                     */
3488 /*                                                                          */
3489 /*   Map Controller Error codes to Linux Error Codes                        */
3490 /*                                                                          */
3491 /****************************************************************************/
3492 static int
3493 ips_map_status(ips_ha_t * ha, ips_scb_t * scb, ips_stat_t * sp)
3494 {
3495         int errcode;
3496         int device_error;
3497         uint32_t transfer_len;
3498         IPS_DCDB_TABLE_TAPE *tapeDCDB;
3499
3500         METHOD_TRACE("ips_map_status", 1);
3501
3502         if (scb->bus) {
3503                 DEBUG_VAR(2,
3504                           "(%s%d) Physical device error (%d %d %d): %x %x, Sense Key: %x, ASC: %x, ASCQ: %x",
3505                           ips_name, ha->host_num,
3506                           scb->scsi_cmd->device->channel,
3507                           scb->scsi_cmd->device->id, scb->scsi_cmd->device->lun,
3508                           scb->basic_status, scb->extended_status,
3509                           scb->extended_status ==
3510                           IPS_ERR_CKCOND ? scb->dcdb.sense_info[2] & 0xf : 0,
3511                           scb->extended_status ==
3512                           IPS_ERR_CKCOND ? scb->dcdb.sense_info[12] : 0,
3513                           scb->extended_status ==
3514                           IPS_ERR_CKCOND ? scb->dcdb.sense_info[13] : 0);
3515         }
3516
3517         /* default driver error */
3518         errcode = DID_ERROR;
3519         device_error = 0;
3520
3521         switch (scb->basic_status & IPS_GSC_STATUS_MASK) {
3522         case IPS_CMD_TIMEOUT:
3523                 errcode = DID_TIME_OUT;
3524                 break;
3525
3526         case IPS_INVAL_OPCO:
3527         case IPS_INVAL_CMD_BLK:
3528         case IPS_INVAL_PARM_BLK:
3529         case IPS_LD_ERROR:
3530         case IPS_CMD_CMPLT_WERROR:
3531                 break;
3532
3533         case IPS_PHYS_DRV_ERROR:
3534                 switch (scb->extended_status) {
3535                 case IPS_ERR_SEL_TO:
3536                         if (scb->bus)
3537                                 errcode = DID_NO_CONNECT;
3538
3539                         break;
3540
3541                 case IPS_ERR_OU_RUN:
3542                         if ((scb->cmd.dcdb.op_code == IPS_CMD_EXTENDED_DCDB) ||
3543                             (scb->cmd.dcdb.op_code ==
3544                              IPS_CMD_EXTENDED_DCDB_SG)) {
3545                                 tapeDCDB = (IPS_DCDB_TABLE_TAPE *) & scb->dcdb;
3546                                 transfer_len = tapeDCDB->transfer_length;
3547                         } else {
3548                                 transfer_len =
3549                                     (uint32_t) scb->dcdb.transfer_length;
3550                         }
3551
3552                         if ((scb->bus) && (transfer_len < scb->data_len)) {
3553                                 /* Underrun - set default to no error */
3554                                 errcode = DID_OK;
3555
3556                                 /* Restrict access to physical DASD */
3557                                 if ((scb->scsi_cmd->cmnd[0] == INQUIRY) &&
3558                                     ((((char *) scb->scsi_cmd->
3559                                        buffer)[0] & 0x1f) == TYPE_DISK)) {
3560                                         /* underflow -- no error               */
3561                                         /* restrict access to physical DASD    */
3562                                         errcode = DID_TIME_OUT;
3563                                         break;
3564                                 }
3565                         } else
3566                                 errcode = DID_ERROR;
3567
3568                         break;
3569
3570                 case IPS_ERR_RECOVERY:
3571                         /* don't fail recovered errors */
3572                         if (scb->bus)
3573                                 errcode = DID_OK;
3574
3575                         break;
3576
3577                 case IPS_ERR_HOST_RESET:
3578                 case IPS_ERR_DEV_RESET:
3579                         errcode = DID_RESET;
3580                         break;
3581
3582                 case IPS_ERR_CKCOND:
3583                         if (scb->bus) {
3584                                 if ((scb->cmd.dcdb.op_code ==
3585                                      IPS_CMD_EXTENDED_DCDB)
3586                                     || (scb->cmd.dcdb.op_code ==
3587                                         IPS_CMD_EXTENDED_DCDB_SG)) {
3588                                         tapeDCDB =
3589                                             (IPS_DCDB_TABLE_TAPE *) & scb->dcdb;
3590                                         memcpy(scb->scsi_cmd->sense_buffer,
3591                                                tapeDCDB->sense_info,
3592                                                sizeof (scb->scsi_cmd->
3593                                                        sense_buffer));
3594                                 } else {
3595                                         memcpy(scb->scsi_cmd->sense_buffer,
3596                                                scb->dcdb.sense_info,
3597                                                sizeof (scb->scsi_cmd->
3598                                                        sense_buffer));
3599                                 }
3600                                 device_error = 2;       /* check condition */
3601                         }
3602
3603                         errcode = DID_OK;
3604
3605                         break;
3606
3607                 default:
3608                         errcode = DID_ERROR;
3609                         break;
3610
3611                 }               /* end switch */
3612         }                       /* end switch */
3613
3614         scb->scsi_cmd->result = device_error | (errcode << 16);
3615
3616         return (1);
3617 }
3618
3619 /****************************************************************************/
3620 /*                                                                          */
3621 /* Routine Name: ips_send_wait                                              */
3622 /*                                                                          */
3623 /* Routine Description:                                                     */
3624 /*                                                                          */
3625 /*   Send a command to the controller and wait for it to return             */
3626 /*                                                                          */
3627 /*   The FFDC Time Stamp use this function for the callback, but doesn't    */
3628 /*   actually need to wait.                                                 */
3629 /****************************************************************************/
3630 static int
3631 ips_send_wait(ips_ha_t * ha, ips_scb_t * scb, int timeout, int intr)
3632 {
3633         int ret;
3634
3635         METHOD_TRACE("ips_send_wait", 1);
3636
3637         if (intr != IPS_FFDC) { /* Won't be Waiting if this is a Time Stamp */
3638                 ha->waitflag = TRUE;
3639                 ha->cmd_in_progress = scb->cdb[0];
3640         }
3641         scb->callback = ipsintr_blocking;
3642         ret = ips_send_cmd(ha, scb);
3643
3644         if ((ret == IPS_FAILURE) || (ret == IPS_SUCCESS_IMM))
3645                 return (ret);
3646
3647         if (intr != IPS_FFDC)   /* Don't Wait around if this is a Time Stamp */
3648                 ret = ips_wait(ha, timeout, intr);
3649
3650         return (ret);
3651 }
3652
3653 /****************************************************************************/
3654 /*                                                                          */
3655 /* Routine Name: ips_scmd_buf_write                                         */
3656 /*                                                                          */
3657 /* Routine Description:                                                     */
3658 /*  Write data to Scsi_Cmnd request_buffer at proper offsets                */
3659 /****************************************************************************/
3660 static void
3661 ips_scmd_buf_write(Scsi_Cmnd * scmd, void *data, unsigned
3662                    int count)
3663 {
3664         if (scmd->use_sg) {
3665                 int i;
3666                 unsigned int min_cnt, xfer_cnt;
3667                 char *cdata = (char *) data;
3668                 unsigned char *buffer;
3669                 unsigned long flags;
3670                 struct scatterlist *sg = scmd->request_buffer;
3671                 for (i = 0, xfer_cnt = 0;
3672                      (i < scmd->use_sg) && (xfer_cnt < count); i++) {
3673                         min_cnt = min(count - xfer_cnt, sg[i].length);
3674
3675                         /* kmap_atomic() ensures addressability of the data buffer.*/
3676                         /* local_irq_save() protects the KM_IRQ0 address slot.     */
3677                         local_irq_save(flags);
3678                         buffer = kmap_atomic(sg[i].page, KM_IRQ0) + sg[i].offset;
3679                         memcpy(buffer, &cdata[xfer_cnt], min_cnt);
3680                         kunmap_atomic(buffer - sg[i].offset, KM_IRQ0);
3681                         local_irq_restore(flags);
3682
3683                         xfer_cnt += min_cnt;
3684                 }
3685
3686         } else {
3687                 unsigned int min_cnt = min(count, scmd->request_bufflen);
3688                 memcpy(scmd->request_buffer, data, min_cnt);
3689         }
3690 }
3691
3692 /****************************************************************************/
3693 /*                                                                          */
3694 /* Routine Name: ips_scmd_buf_read                                          */
3695 /*                                                                          */
3696 /* Routine Description:                                                     */
3697 /*  Copy data from a Scsi_Cmnd to a new, linear buffer                      */
3698 /****************************************************************************/
3699 static void
3700 ips_scmd_buf_read(Scsi_Cmnd * scmd, void *data, unsigned
3701                   int count)
3702 {
3703         if (scmd->use_sg) {
3704                 int i;
3705                 unsigned int min_cnt, xfer_cnt;
3706                 char *cdata = (char *) data;
3707                 unsigned char *buffer;
3708                 unsigned long flags;
3709                 struct scatterlist *sg = scmd->request_buffer;
3710                 for (i = 0, xfer_cnt = 0;
3711                      (i < scmd->use_sg) && (xfer_cnt < count); i++) {
3712                         min_cnt = min(count - xfer_cnt, sg[i].length);
3713
3714                         /* kmap_atomic() ensures addressability of the data buffer.*/
3715                         /* local_irq_save() protects the KM_IRQ0 address slot.     */
3716                         local_irq_save(flags);
3717                         buffer = kmap_atomic(sg[i].page, KM_IRQ0) + sg[i].offset;
3718                         memcpy(&cdata[xfer_cnt], buffer, min_cnt);
3719                         kunmap_atomic(buffer - sg[i].offset, KM_IRQ0);
3720                         local_irq_restore(flags);
3721
3722                         xfer_cnt += min_cnt;
3723                 }
3724
3725         } else {
3726                 unsigned int min_cnt = min(count, scmd->request_bufflen);
3727                 memcpy(data, scmd->request_buffer, min_cnt);
3728         }
3729 }
3730
3731 /****************************************************************************/
3732 /*                                                                          */
3733 /* Routine Name: ips_send_cmd                                               */
3734 /*                                                                          */
3735 /* Routine Description:                                                     */
3736 /*                                                                          */
3737 /*   Map SCSI commands to ServeRAID commands for logical drives             */
3738 /*                                                                          */
3739 /****************************************************************************/
3740 static int
3741 ips_send_cmd(ips_ha_t * ha, ips_scb_t * scb)
3742 {
3743         int ret;
3744         char *sp;
3745         int device_error;
3746         IPS_DCDB_TABLE_TAPE *tapeDCDB;
3747         int TimeOut;
3748
3749         METHOD_TRACE("ips_send_cmd", 1);
3750
3751         ret = IPS_SUCCESS;
3752
3753         if (!scb->scsi_cmd) {
3754                 /* internal command */
3755
3756                 if (scb->bus > 0) {
3757                         /* Controller commands can't be issued */
3758                         /* to real devices -- fail them        */
3759                         if ((ha->waitflag == TRUE) &&
3760                             (ha->cmd_in_progress == scb->cdb[0])) {
3761                                 ha->waitflag = FALSE;
3762                         }
3763
3764                         return (1);
3765                 }
3766         } else if ((scb->bus == 0) && (!ips_is_passthru(scb->scsi_cmd))) {
3767                 /* command to logical bus -- interpret */
3768                 ret = IPS_SUCCESS_IMM;
3769
3770                 switch (scb->scsi_cmd->cmnd[0]) {
3771                 case ALLOW_MEDIUM_REMOVAL:
3772                 case REZERO_UNIT:
3773                 case ERASE:
3774                 case WRITE_FILEMARKS:
3775                 case SPACE:
3776                         scb->scsi_cmd->result = DID_ERROR << 16;
3777                         break;
3778
3779                 case START_STOP:
3780                         scb->scsi_cmd->result = DID_OK << 16;
3781
3782                 case TEST_UNIT_READY:
3783                 case INQUIRY:
3784                         if (scb->target_id == IPS_ADAPTER_ID) {
3785                                 /*
3786                                  * Either we have a TUR
3787                                  * or we have a SCSI inquiry
3788                                  */
3789                                 if (scb->scsi_cmd->cmnd[0] == TEST_UNIT_READY)
3790                                         scb->scsi_cmd->result = DID_OK << 16;
3791
3792                                 if (scb->scsi_cmd->cmnd[0] == INQUIRY) {
3793                                         IPS_SCSI_INQ_DATA inquiry;
3794
3795                                         memset(&inquiry, 0,
3796                                                sizeof (IPS_SCSI_INQ_DATA));
3797
3798                                         inquiry.DeviceType =
3799                                             IPS_SCSI_INQ_TYPE_PROCESSOR;
3800                                         inquiry.DeviceTypeQualifier =
3801                                             IPS_SCSI_INQ_LU_CONNECTED;
3802                                         inquiry.Version = IPS_SCSI_INQ_REV2;
3803                                         inquiry.ResponseDataFormat =
3804                                             IPS_SCSI_INQ_RD_REV2;
3805                                         inquiry.AdditionalLength = 31;
3806                                         inquiry.Flags[0] =
3807                                             IPS_SCSI_INQ_Address16;
3808                                         inquiry.Flags[1] =
3809                                             IPS_SCSI_INQ_WBus16 |
3810                                             IPS_SCSI_INQ_Sync;
3811                                         strncpy(inquiry.VendorId, "IBM     ",
3812                                                 8);
3813                                         strncpy(inquiry.ProductId,
3814                                                 "SERVERAID       ", 16);
3815                                         strncpy(inquiry.ProductRevisionLevel,
3816                                                 "1.00", 4);
3817
3818                                         ips_scmd_buf_write(scb->scsi_cmd,
3819                                                            &inquiry,
3820                                                            sizeof (inquiry));
3821
3822                                         scb->scsi_cmd->result = DID_OK << 16;
3823                                 }
3824                         } else {
3825                                 scb->cmd.logical_info.op_code = IPS_CMD_GET_LD_INFO;
3826                                 scb->cmd.logical_info.command_id = IPS_COMMAND_ID(ha, scb);
3827                                 scb->cmd.logical_info.reserved = 0;
3828                                 scb->cmd.logical_info.reserved2 = 0;
3829                                 scb->data_len = sizeof (IPS_LD_INFO);
3830                                 scb->data_busaddr = ha->logical_drive_info_dma_addr;
3831                                 scb->flags = 0;
3832                                 scb->cmd.logical_info.buffer_addr = scb->data_busaddr;
3833                                 ret = IPS_SUCCESS;
3834                         }
3835
3836                         break;
3837
3838                 case REQUEST_SENSE:
3839                         ips_reqsen(ha, scb);
3840                         scb->scsi_cmd->result = DID_OK << 16;
3841                         break;
3842
3843                 case READ_6:
3844                 case WRITE_6:
3845                         if (!scb->sg_len) {
3846                                 scb->cmd.basic_io.op_code =
3847                                     (scb->scsi_cmd->cmnd[0] ==
3848                                      READ_6) ? IPS_CMD_READ : IPS_CMD_WRITE;
3849                                 scb->cmd.basic_io.enhanced_sg = 0;
3850                                 scb->cmd.basic_io.sg_addr =
3851                                     cpu_to_le32(scb->data_busaddr);
3852                         } else {
3853                                 scb->cmd.basic_io.op_code =
3854                                     (scb->scsi_cmd->cmnd[0] ==
3855                                      READ_6) ? IPS_CMD_READ_SG :
3856                                     IPS_CMD_WRITE_SG;
3857                                 scb->cmd.basic_io.enhanced_sg =
3858                                     IPS_USE_ENH_SGLIST(ha) ? 0xFF : 0;
3859                                 scb->cmd.basic_io.sg_addr =
3860                                     cpu_to_le32(scb->sg_busaddr);
3861                         }
3862
3863                         scb->cmd.basic_io.segment_4G = 0;
3864                         scb->cmd.basic_io.command_id = IPS_COMMAND_ID(ha, scb);
3865                         scb->cmd.basic_io.log_drv = scb->target_id;
3866                         scb->cmd.basic_io.sg_count = scb->sg_len;
3867
3868                         if (scb->cmd.basic_io.lba)
3869                                 scb->cmd.basic_io.lba =
3870                                     cpu_to_le32(le32_to_cpu
3871                                                 (scb->cmd.basic_io.lba) +
3872                                                 le16_to_cpu(scb->cmd.basic_io.
3873                                                             sector_count));
3874                         else
3875                                 scb->cmd.basic_io.lba =
3876                                     (((scb->scsi_cmd->
3877                                        cmnd[1] & 0x1f) << 16) | (scb->scsi_cmd->
3878                                                                  cmnd[2] << 8) |
3879                                      (scb->scsi_cmd->cmnd[3]));
3880
3881                         scb->cmd.basic_io.sector_count =
3882                             cpu_to_le16(scb->data_len / IPS_BLKSIZE);
3883
3884                         if (le16_to_cpu(scb->cmd.basic_io.sector_count) == 0)
3885                                 scb->cmd.basic_io.sector_count =
3886                                     cpu_to_le16(256);
3887
3888                         ret = IPS_SUCCESS;
3889                         break;
3890
3891                 case READ_10:
3892                 case WRITE_10:
3893                         if (!scb->sg_len) {
3894                                 scb->cmd.basic_io.op_code =
3895                                     (scb->scsi_cmd->cmnd[0] ==
3896                                      READ_10) ? IPS_CMD_READ : IPS_CMD_WRITE;
3897                                 scb->cmd.basic_io.enhanced_sg = 0;
3898                                 scb->cmd.basic_io.sg_addr =
3899                                     cpu_to_le32(scb->data_busaddr);
3900                         } else {
3901                                 scb->cmd.basic_io.op_code =
3902                                     (scb->scsi_cmd->cmnd[0] ==
3903                                      READ_10) ? IPS_CMD_READ_SG :
3904                                     IPS_CMD_WRITE_SG;
3905                                 scb->cmd.basic_io.enhanced_sg =
3906                                     IPS_USE_ENH_SGLIST(ha) ? 0xFF : 0;
3907                                 scb->cmd.basic_io.sg_addr =
3908                                     cpu_to_le32(scb->sg_busaddr);
3909                         }
3910
3911                         scb->cmd.basic_io.segment_4G = 0;
3912                         scb->cmd.basic_io.command_id = IPS_COMMAND_ID(ha, scb);
3913                         scb->cmd.basic_io.log_drv = scb->target_id;
3914                         scb->cmd.basic_io.sg_count = scb->sg_len;
3915
3916                         if (scb->cmd.basic_io.lba)
3917                                 scb->cmd.basic_io.lba =
3918                                     cpu_to_le32(le32_to_cpu
3919                                                 (scb->cmd.basic_io.lba) +
3920                                                 le16_to_cpu(scb->cmd.basic_io.
3921                                                             sector_count));
3922                         else
3923                                 scb->cmd.basic_io.lba =
3924                                     ((scb->scsi_cmd->cmnd[2] << 24) | (scb->
3925                                                                        scsi_cmd->
3926                                                                        cmnd[3]
3927                                                                        << 16) |
3928                                      (scb->scsi_cmd->cmnd[4] << 8) | scb->
3929                                      scsi_cmd->cmnd[5]);
3930
3931                         scb->cmd.basic_io.sector_count =
3932                             cpu_to_le16(scb->data_len / IPS_BLKSIZE);
3933
3934                         if (cpu_to_le16(scb->cmd.basic_io.sector_count) == 0) {
3935                                 /*
3936                                  * This is a null condition
3937                                  * we don't have to do anything
3938                                  * so just return
3939                                  */
3940                                 scb->scsi_cmd->result = DID_OK << 16;
3941                         } else
3942                                 ret = IPS_SUCCESS;
3943
3944                         break;
3945
3946                 case RESERVE:
3947                 case RELEASE:
3948                         scb->scsi_cmd->result = DID_OK << 16;
3949                         break;
3950
3951                 case MODE_SENSE:
3952                         scb->cmd.basic_io.op_code = IPS_CMD_ENQUIRY;
3953                         scb->cmd.basic_io.command_id = IPS_COMMAND_ID(ha, scb);
3954                         scb->cmd.basic_io.segment_4G = 0;
3955                         scb->cmd.basic_io.enhanced_sg = 0;
3956                         scb->data_len = sizeof (*ha->enq);
3957                         scb->cmd.basic_io.sg_addr = ha->enq_busaddr;
3958                         ret = IPS_SUCCESS;
3959                         break;
3960
3961                 case READ_CAPACITY:
3962                         scb->cmd.logical_info.op_code = IPS_CMD_GET_LD_INFO;
3963                         scb->cmd.logical_info.command_id = IPS_COMMAND_ID(ha, scb);
3964                         scb->cmd.logical_info.reserved = 0;
3965                         scb->cmd.logical_info.reserved2 = 0;
3966                         scb->cmd.logical_info.reserved3 = 0;
3967                         scb->data_len = sizeof (IPS_LD_INFO);
3968                         scb->data_busaddr = ha->logical_drive_info_dma_addr;
3969                         scb->flags = 0;
3970                         scb->cmd.logical_info.buffer_addr = scb->data_busaddr;
3971                         ret = IPS_SUCCESS;
3972                         break;
3973
3974                 case SEND_DIAGNOSTIC:
3975                 case REASSIGN_BLOCKS:
3976                 case FORMAT_UNIT:
3977                 case SEEK_10:
3978                 case VERIFY:
3979                 case READ_DEFECT_DATA:
3980                 case READ_BUFFER:
3981                 case WRITE_BUFFER:
3982                         scb->scsi_cmd->result = DID_OK << 16;
3983                         break;
3984
3985                 default:
3986                         /* Set the Return Info to appear like the Command was */
3987                         /* attempted, a Check Condition occurred, and Sense   */
3988                         /* Data indicating an Invalid CDB OpCode is returned. */
3989                         sp = (char *) scb->scsi_cmd->sense_buffer;
3990                         memset(sp, 0, sizeof (scb->scsi_cmd->sense_buffer));
3991
3992                         sp[0] = 0x70;   /* Error Code               */
3993                         sp[2] = ILLEGAL_REQUEST;        /* Sense Key 5 Illegal Req. */
3994                         sp[7] = 0x0A;   /* Additional Sense Length  */
3995                         sp[12] = 0x20;  /* ASC = Invalid OpCode     */
3996                         sp[13] = 0x00;  /* ASCQ                     */
3997
3998                         device_error = 2;       /* Indicate Check Condition */
3999                         scb->scsi_cmd->result = device_error | (DID_OK << 16);
4000                         break;
4001                 }               /* end switch */
4002         }
4003         /* end if */
4004         if (ret == IPS_SUCCESS_IMM)
4005                 return (ret);
4006
4007         /* setup DCDB */
4008         if (scb->bus > 0) {
4009
4010                 /* If we already know the Device is Not there, no need to attempt a Command   */
4011                 /* This also protects an NT FailOver Controller from getting CDB's sent to it */
4012                 if (ha->conf->dev[scb->bus - 1][scb->target_id].ucState == 0) {
4013                         scb->scsi_cmd->result = DID_NO_CONNECT << 16;
4014                         return (IPS_SUCCESS_IMM);
4015                 }
4016
4017                 ha->dcdb_active[scb->bus - 1] |= (1 << scb->target_id);
4018                 scb->cmd.dcdb.command_id = IPS_COMMAND_ID(ha, scb);
4019                 scb->cmd.dcdb.dcdb_address = cpu_to_le32(scb->scb_busaddr +
4020                                                          (unsigned long) &scb->
4021                                                          dcdb -
4022                                                          (unsigned long) scb);
4023                 scb->cmd.dcdb.reserved = 0;
4024                 scb->cmd.dcdb.reserved2 = 0;
4025                 scb->cmd.dcdb.reserved3 = 0;
4026                 scb->cmd.dcdb.segment_4G = 0;
4027                 scb->cmd.dcdb.enhanced_sg = 0;
4028
4029                 TimeOut = scb->scsi_cmd->timeout_per_command;
4030
4031                 if (ha->subsys->param[4] & 0x00100000) {        /* If NEW Tape DCDB is Supported */
4032                         if (!scb->sg_len) {
4033                                 scb->cmd.dcdb.op_code = IPS_CMD_EXTENDED_DCDB;
4034                         } else {
4035                                 scb->cmd.dcdb.op_code =
4036                                     IPS_CMD_EXTENDED_DCDB_SG;
4037                                 scb->cmd.dcdb.enhanced_sg =
4038                                     IPS_USE_ENH_SGLIST(ha) ? 0xFF : 0;
4039                         }
4040
4041                         tapeDCDB = (IPS_DCDB_TABLE_TAPE *) & scb->dcdb; /* Use Same Data Area as Old DCDB Struct */
4042                         tapeDCDB->device_address =
4043                             ((scb->bus - 1) << 4) | scb->target_id;
4044                         tapeDCDB->cmd_attribute |= IPS_DISCONNECT_ALLOWED;
4045                         tapeDCDB->cmd_attribute &= ~IPS_TRANSFER64K;    /* Always Turn OFF 64K Size Flag */
4046
4047                         if (TimeOut) {
4048                                 if (TimeOut < (10 * HZ))
4049                                         tapeDCDB->cmd_attribute |= IPS_TIMEOUT10;       /* TimeOut is 10 Seconds */
4050                                 else if (TimeOut < (60 * HZ))
4051                                         tapeDCDB->cmd_attribute |= IPS_TIMEOUT60;       /* TimeOut is 60 Seconds */
4052                                 else if (TimeOut < (1200 * HZ))
4053                                         tapeDCDB->cmd_attribute |= IPS_TIMEOUT20M;      /* TimeOut is 20 Minutes */
4054                         }
4055
4056                         tapeDCDB->cdb_length = scb->scsi_cmd->cmd_len;
4057                         tapeDCDB->reserved_for_LUN = 0;
4058                         tapeDCDB->transfer_length = scb->data_len;
4059                         if (scb->cmd.dcdb.op_code == IPS_CMD_EXTENDED_DCDB_SG)
4060                                 tapeDCDB->buffer_pointer =
4061                                     cpu_to_le32(scb->sg_busaddr);
4062                         else
4063                                 tapeDCDB->buffer_pointer =
4064                                     cpu_to_le32(scb->data_busaddr);
4065                         tapeDCDB->sg_count = scb->sg_len;
4066                         tapeDCDB->sense_length = sizeof (tapeDCDB->sense_info);
4067                         tapeDCDB->scsi_status = 0;
4068                         tapeDCDB->reserved = 0;
4069                         memcpy(tapeDCDB->scsi_cdb, scb->scsi_cmd->cmnd,
4070                                scb->scsi_cmd->cmd_len);
4071                 } else {
4072                         if (!scb->sg_len) {
4073                                 scb->cmd.dcdb.op_code = IPS_CMD_DCDB;
4074                         } else {
4075                                 scb->cmd.dcdb.op_code = IPS_CMD_DCDB_SG;
4076                                 scb->cmd.dcdb.enhanced_sg =
4077                                     IPS_USE_ENH_SGLIST(ha) ? 0xFF : 0;
4078                         }
4079
4080                         scb->dcdb.device_address =
4081                             ((scb->bus - 1) << 4) | scb->target_id;
4082                         scb->dcdb.cmd_attribute |= IPS_DISCONNECT_ALLOWED;
4083
4084                         if (TimeOut) {
4085                                 if (TimeOut < (10 * HZ))
4086                                         scb->dcdb.cmd_attribute |= IPS_TIMEOUT10;       /* TimeOut is 10 Seconds */
4087                                 else if (TimeOut < (60 * HZ))
4088                                         scb->dcdb.cmd_attribute |= IPS_TIMEOUT60;       /* TimeOut is 60 Seconds */
4089                                 else if (TimeOut < (1200 * HZ))
4090                                         scb->dcdb.cmd_attribute |= IPS_TIMEOUT20M;      /* TimeOut is 20 Minutes */
4091                         }
4092
4093                         scb->dcdb.transfer_length = scb->data_len;
4094                         if (scb->dcdb.cmd_attribute & IPS_TRANSFER64K)
4095                                 scb->dcdb.transfer_length = 0;
4096                         if (scb->cmd.dcdb.op_code == IPS_CMD_DCDB_SG)
4097                                 scb->dcdb.buffer_pointer =
4098                                     cpu_to_le32(scb->sg_busaddr);
4099                         else
4100                                 scb->dcdb.buffer_pointer =
4101                                     cpu_to_le32(scb->data_busaddr);
4102                         scb->dcdb.cdb_length = scb->scsi_cmd->cmd_len;
4103                         scb->dcdb.sense_length = sizeof (scb->dcdb.sense_info);
4104                         scb->dcdb.sg_count = scb->sg_len;
4105                         scb->dcdb.reserved = 0;
4106                         memcpy(scb->dcdb.scsi_cdb, scb->scsi_cmd->cmnd,
4107                                scb->scsi_cmd->cmd_len);
4108                         scb->dcdb.scsi_status = 0;
4109                         scb->dcdb.reserved2[0] = 0;
4110                         scb->dcdb.reserved2[1] = 0;
4111                         scb->dcdb.reserved2[2] = 0;
4112                 }
4113         }
4114
4115         return ((*ha->func.issue) (ha, scb));
4116 }
4117
4118 /****************************************************************************/
4119 /*                                                                          */
4120 /* Routine Name: ips_chk_status                                             */
4121 /*                                                                          */
4122 /* Routine Description:                                                     */
4123 /*                                                                          */
4124 /*   Check the status of commands to logical drives                         */
4125 /*   Assumed to be called with the HA lock                                  */
4126 /****************************************************************************/
4127 static void
4128 ips_chkstatus(ips_ha_t * ha, IPS_STATUS * pstatus)
4129 {
4130         ips_scb_t *scb;
4131         ips_stat_t *sp;
4132         uint8_t basic_status;
4133         uint8_t ext_status;
4134         int errcode;
4135
4136         METHOD_TRACE("ips_chkstatus", 1);
4137
4138         scb = &ha->scbs[pstatus->fields.command_id];
4139         scb->basic_status = basic_status =
4140             pstatus->fields.basic_status & IPS_BASIC_STATUS_MASK;
4141         scb->extended_status = ext_status = pstatus->fields.extended_status;
4142
4143         sp = &ha->sp;
4144         sp->residue_len = 0;
4145         sp->scb_addr = (void *) scb;
4146
4147         /* Remove the item from the active queue */
4148         ips_removeq_scb(&ha->scb_activelist, scb);
4149
4150         if (!scb->scsi_cmd)
4151                 /* internal commands are handled in do_ipsintr */
4152                 return;
4153
4154         DEBUG_VAR(2, "(%s%d) ips_chkstatus: cmd 0x%X id %d (%d %d %d)",
4155                   ips_name,
4156                   ha->host_num,
4157                   scb->cdb[0],
4158                   scb->cmd.basic_io.command_id,
4159                   scb->bus, scb->target_id, scb->lun);
4160
4161         if ((scb->scsi_cmd) && (ips_is_passthru(scb->scsi_cmd)))
4162                 /* passthru - just returns the raw result */
4163                 return;
4164
4165         errcode = DID_OK;
4166
4167         if (((basic_status & IPS_GSC_STATUS_MASK) == IPS_CMD_SUCCESS) ||
4168             ((basic_status & IPS_GSC_STATUS_MASK) == IPS_CMD_RECOVERED_ERROR)) {
4169
4170                 if (scb->bus == 0) {
4171                         if ((basic_status & IPS_GSC_STATUS_MASK) ==
4172                             IPS_CMD_RECOVERED_ERROR) {
4173                                 DEBUG_VAR(1,
4174                                           "(%s%d) Recovered Logical Drive Error OpCode: %x, BSB: %x, ESB: %x",
4175                                           ips_name, ha->host_num,
4176                                           scb->cmd.basic_io.op_code,
4177                                           basic_status, ext_status);
4178                         }
4179
4180                         switch (scb->scsi_cmd->cmnd[0]) {
4181                         case ALLOW_MEDIUM_REMOVAL:
4182                         case REZERO_UNIT:
4183                         case ERASE:
4184                         case WRITE_FILEMARKS:
4185                         case SPACE:
4186                                 errcode = DID_ERROR;
4187                                 break;
4188
4189                         case START_STOP:
4190                                 break;
4191
4192                         case TEST_UNIT_READY:
4193                                 if (!ips_online(ha, scb)) {
4194                                         errcode = DID_TIME_OUT;
4195                                 }
4196                                 break;
4197
4198                         case INQUIRY:
4199                                 if (ips_online(ha, scb)) {
4200                                         ips_inquiry(ha, scb);
4201                                 } else {
4202                                         errcode = DID_TIME_OUT;
4203                                 }
4204                                 break;
4205
4206                         case REQUEST_SENSE:
4207                                 ips_reqsen(ha, scb);
4208                                 break;
4209
4210                         case READ_6:
4211                         case WRITE_6:
4212                         case READ_10:
4213                         case WRITE_10:
4214                         case RESERVE:
4215                         case RELEASE:
4216                                 break;
4217
4218                         case MODE_SENSE:
4219                                 if (!ips_online(ha, scb)
4220                                     || !ips_msense(ha, scb)) {
4221                                         errcode = DID_ERROR;
4222                                 }
4223                                 break;
4224
4225                         case READ_CAPACITY:
4226                                 if (ips_online(ha, scb))
4227                                         ips_rdcap(ha, scb);
4228                                 else {
4229                                         errcode = DID_TIME_OUT;
4230                                 }
4231                                 break;
4232
4233                         case SEND_DIAGNOSTIC:
4234                         case REASSIGN_BLOCKS:
4235                                 break;
4236
4237                         case FORMAT_UNIT:
4238                                 errcode = DID_ERROR;
4239                                 break;
4240
4241                         case SEEK_10:
4242                         case VERIFY:
4243                         case READ_DEFECT_DATA:
4244                         case READ_BUFFER:
4245                         case WRITE_BUFFER:
4246                                 break;
4247
4248                         default:
4249                                 errcode = DID_ERROR;
4250                         }       /* end switch */
4251
4252                         scb->scsi_cmd->result = errcode << 16;
4253                 } else {        /* bus == 0 */
4254                         /* restrict access to physical drives */
4255                         if ((scb->scsi_cmd->cmnd[0] == INQUIRY) &&
4256                             ((((char *) scb->scsi_cmd->buffer)[0] & 0x1f) ==
4257                              TYPE_DISK)) {
4258
4259                                 scb->scsi_cmd->result = DID_TIME_OUT << 16;
4260                         }
4261                 }               /* else */
4262         } else {                /* recovered error / success */
4263                 if (scb->bus == 0) {
4264                         DEBUG_VAR(1,
4265                                   "(%s%d) Unrecovered Logical Drive Error OpCode: %x, BSB: %x, ESB: %x",
4266                                   ips_name, ha->host_num,
4267                                   scb->cmd.basic_io.op_code, basic_status,
4268                                   ext_status);
4269                 }
4270
4271                 ips_map_status(ha, scb, sp);
4272         }                       /* else */
4273 }
4274
4275 /****************************************************************************/
4276 /*                                                                          */
4277 /* Routine Name: ips_online                                                 */
4278 /*                                                                          */
4279 /* Routine Description:                                                     */
4280 /*                                                                          */
4281 /*   Determine if a logical drive is online                                 */
4282 /*                                                                          */
4283 /****************************************************************************/
4284 static int
4285 ips_online(ips_ha_t * ha, ips_scb_t * scb)
4286 {
4287         METHOD_TRACE("ips_online", 1);
4288
4289         if (scb->target_id >= IPS_MAX_LD)
4290                 return (0);
4291
4292         if ((scb->basic_status & IPS_GSC_STATUS_MASK) > 1) {
4293                 memset(ha->logical_drive_info, 0, sizeof (IPS_LD_INFO));
4294                 return (0);
4295         }
4296
4297         if (ha->logical_drive_info->drive_info[scb->target_id].state !=
4298             IPS_LD_OFFLINE
4299             && ha->logical_drive_info->drive_info[scb->target_id].state !=
4300             IPS_LD_FREE
4301             && ha->logical_drive_info->drive_info[scb->target_id].state !=
4302             IPS_LD_CRS
4303             && ha->logical_drive_info->drive_info[scb->target_id].state !=
4304             IPS_LD_SYS)
4305                 return (1);
4306         else
4307                 return (0);
4308 }
4309
4310 /****************************************************************************/
4311 /*                                                                          */
4312 /* Routine Name: ips_inquiry                                                */
4313 /*                                                                          */
4314 /* Routine Description:                                                     */
4315 /*                                                                          */
4316 /*   Simulate an inquiry command to a logical drive                         */
4317 /*                                                                          */
4318 /****************************************************************************/
4319 static int
4320 ips_inquiry(ips_ha_t * ha, ips_scb_t * scb)
4321 {
4322         IPS_SCSI_INQ_DATA inquiry;
4323
4324         METHOD_TRACE("ips_inquiry", 1);
4325
4326         memset(&inquiry, 0, sizeof (IPS_SCSI_INQ_DATA));
4327
4328         inquiry.DeviceType = IPS_SCSI_INQ_TYPE_DASD;
4329         inquiry.DeviceTypeQualifier = IPS_SCSI_INQ_LU_CONNECTED;
4330         inquiry.Version = IPS_SCSI_INQ_REV2;
4331         inquiry.ResponseDataFormat = IPS_SCSI_INQ_RD_REV2;
4332         inquiry.AdditionalLength = 31;
4333         inquiry.Flags[0] = IPS_SCSI_INQ_Address16;
4334         inquiry.Flags[1] =
4335             IPS_SCSI_INQ_WBus16 | IPS_SCSI_INQ_Sync | IPS_SCSI_INQ_CmdQue;
4336         strncpy(inquiry.VendorId, "IBM     ", 8);
4337         strncpy(inquiry.ProductId, "SERVERAID       ", 16);
4338         strncpy(inquiry.ProductRevisionLevel, "1.00", 4);
4339
4340         ips_scmd_buf_write(scb->scsi_cmd, &inquiry, sizeof (inquiry));
4341
4342         return (1);
4343 }
4344
4345 /****************************************************************************/
4346 /*                                                                          */
4347 /* Routine Name: ips_rdcap                                                  */
4348 /*                                                                          */
4349 /* Routine Description:                                                     */
4350 /*                                                                          */
4351 /*   Simulate a read capacity command to a logical drive                    */
4352 /*                                                                          */
4353 /****************************************************************************/
4354 static int
4355 ips_rdcap(ips_ha_t * ha, ips_scb_t * scb)
4356 {
4357         IPS_SCSI_CAPACITY cap;
4358
4359         METHOD_TRACE("ips_rdcap", 1);
4360
4361         if (scb->scsi_cmd->bufflen < 8)
4362                 return (0);
4363
4364         cap.lba =
4365             cpu_to_be32(le32_to_cpu
4366                         (ha->logical_drive_info->
4367                          drive_info[scb->target_id].sector_count) - 1);
4368         cap.len = cpu_to_be32((uint32_t) IPS_BLKSIZE);
4369
4370         ips_scmd_buf_write(scb->scsi_cmd, &cap, sizeof (cap));
4371
4372         return (1);
4373 }
4374
4375 /****************************************************************************/
4376 /*                                                                          */
4377 /* Routine Name: ips_msense                                                 */
4378 /*                                                                          */
4379 /* Routine Description:                                                     */
4380 /*                                                                          */
4381 /*   Simulate a mode sense command to a logical drive                       */
4382 /*                                                                          */
4383 /****************************************************************************/
4384 static int
4385 ips_msense(ips_ha_t * ha, ips_scb_t * scb)
4386 {
4387         uint16_t heads;
4388         uint16_t sectors;
4389         uint32_t cylinders;
4390         IPS_SCSI_MODE_PAGE_DATA mdata;
4391
4392         METHOD_TRACE("ips_msense", 1);
4393
4394         if (le32_to_cpu(ha->enq->ulDriveSize[scb->target_id]) > 0x400000 &&
4395             (ha->enq->ucMiscFlag & 0x8) == 0) {
4396                 heads = IPS_NORM_HEADS;
4397                 sectors = IPS_NORM_SECTORS;
4398         } else {
4399                 heads = IPS_COMP_HEADS;
4400                 sectors = IPS_COMP_SECTORS;
4401         }
4402
4403         cylinders =
4404             (le32_to_cpu(ha->enq->ulDriveSize[scb->target_id]) -
4405              1) / (heads * sectors);
4406
4407         memset(&mdata, 0, sizeof (IPS_SCSI_MODE_PAGE_DATA));
4408
4409         mdata.hdr.BlockDescLength = 8;
4410
4411         switch (scb->scsi_cmd->cmnd[2] & 0x3f) {
4412         case 0x03:              /* page 3 */
4413                 mdata.pdata.pg3.PageCode = 3;
4414                 mdata.pdata.pg3.PageLength = sizeof (IPS_SCSI_MODE_PAGE3);
4415                 mdata.hdr.DataLength =
4416                     3 + mdata.hdr.BlockDescLength + mdata.pdata.pg3.PageLength;
4417                 mdata.pdata.pg3.TracksPerZone = 0;
4418                 mdata.pdata.pg3.AltSectorsPerZone = 0;
4419                 mdata.pdata.pg3.AltTracksPerZone = 0;
4420                 mdata.pdata.pg3.AltTracksPerVolume = 0;
4421                 mdata.pdata.pg3.SectorsPerTrack = cpu_to_be16(sectors);
4422                 mdata.pdata.pg3.BytesPerSector = cpu_to_be16(IPS_BLKSIZE);
4423                 mdata.pdata.pg3.Interleave = cpu_to_be16(1);
4424                 mdata.pdata.pg3.TrackSkew = 0;
4425                 mdata.pdata.pg3.CylinderSkew = 0;
4426                 mdata.pdata.pg3.flags = IPS_SCSI_MP3_SoftSector;
4427                 break;
4428
4429         case 0x4:
4430                 mdata.pdata.pg4.PageCode = 4;
4431                 mdata.pdata.pg4.PageLength = sizeof (IPS_SCSI_MODE_PAGE4);
4432                 mdata.hdr.DataLength =
4433                     3 + mdata.hdr.BlockDescLength + mdata.pdata.pg4.PageLength;
4434                 mdata.pdata.pg4.CylindersHigh =
4435                     cpu_to_be16((cylinders >> 8) & 0xFFFF);
4436                 mdata.pdata.pg4.CylindersLow = (cylinders & 0xFF);
4437                 mdata.pdata.pg4.Heads = heads;
4438                 mdata.pdata.pg4.WritePrecompHigh = 0;
4439                 mdata.pdata.pg4.WritePrecompLow = 0;
4440                 mdata.pdata.pg4.ReducedWriteCurrentHigh = 0;
4441                 mdata.pdata.pg4.ReducedWriteCurrentLow = 0;
4442                 mdata.pdata.pg4.StepRate = cpu_to_be16(1);
4443                 mdata.pdata.pg4.LandingZoneHigh = 0;
4444                 mdata.pdata.pg4.LandingZoneLow = 0;
4445                 mdata.pdata.pg4.flags = 0;
4446                 mdata.pdata.pg4.RotationalOffset = 0;
4447                 mdata.pdata.pg4.MediumRotationRate = 0;
4448                 break;
4449         case 0x8:
4450                 mdata.pdata.pg8.PageCode = 8;
4451                 mdata.pdata.pg8.PageLength = sizeof (IPS_SCSI_MODE_PAGE8);
4452                 mdata.hdr.DataLength =
4453                     3 + mdata.hdr.BlockDescLength + mdata.pdata.pg8.PageLength;
4454                 /* everything else is left set to 0 */
4455                 break;
4456
4457         default:
4458                 return (0);
4459         }                       /* end switch */
4460
4461         ips_scmd_buf_write(scb->scsi_cmd, &mdata, sizeof (mdata));
4462
4463         return (1);
4464 }
4465
4466 /****************************************************************************/
4467 /*                                                                          */
4468 /* Routine Name: ips_reqsen                                                 */
4469 /*                                                                          */
4470 /* Routine Description:                                                     */
4471 /*                                                                          */
4472 /*   Simulate a request sense command to a logical drive                    */
4473 /*                                                                          */
4474 /****************************************************************************/
4475 static int
4476 ips_reqsen(ips_ha_t * ha, ips_scb_t * scb)
4477 {
4478         IPS_SCSI_REQSEN reqsen;
4479
4480         METHOD_TRACE("ips_reqsen", 1);
4481
4482         memset(&reqsen, 0, sizeof (IPS_SCSI_REQSEN));
4483
4484         reqsen.ResponseCode =
4485             IPS_SCSI_REQSEN_VALID | IPS_SCSI_REQSEN_CURRENT_ERR;
4486         reqsen.AdditionalLength = 10;
4487         reqsen.AdditionalSenseCode = IPS_SCSI_REQSEN_NO_SENSE;
4488         reqsen.AdditionalSenseCodeQual = IPS_SCSI_REQSEN_NO_SENSE;
4489
4490         ips_scmd_buf_write(scb->scsi_cmd, &reqsen, sizeof (reqsen));
4491
4492         return (1);
4493 }
4494
4495 /****************************************************************************/
4496 /*                                                                          */
4497 /* Routine Name: ips_free                                                   */
4498 /*                                                                          */
4499 /* Routine Description:                                                     */
4500 /*                                                                          */
4501 /*   Free any allocated space for this controller                           */
4502 /*                                                                          */
4503 /****************************************************************************/
4504 static void
4505 ips_free(ips_ha_t * ha)
4506 {
4507
4508         METHOD_TRACE("ips_free", 1);
4509
4510         if (ha) {
4511                 if (ha->enq) {
4512                         pci_free_consistent(ha->pcidev, sizeof(IPS_ENQ),
4513                                             ha->enq, ha->enq_busaddr);
4514                         ha->enq = NULL;
4515                 }
4516
4517                 kfree(ha->conf);
4518                 ha->conf = NULL;
4519
4520                 if (ha->adapt) {
4521                         pci_free_consistent(ha->pcidev,
4522                                             sizeof (IPS_ADAPTER) +
4523                                             sizeof (IPS_IO_CMD), ha->adapt,
4524                                             ha->adapt->hw_status_start);
4525                         ha->adapt = NULL;
4526                 }
4527
4528                 if (ha->logical_drive_info) {
4529                         pci_free_consistent(ha->pcidev,
4530                                             sizeof (IPS_LD_INFO),
4531                                             ha->logical_drive_info,
4532                                             ha->logical_drive_info_dma_addr);
4533                         ha->logical_drive_info = NULL;
4534                 }
4535
4536                 kfree(ha->nvram);
4537                 ha->nvram = NULL;
4538
4539                 kfree(ha->subsys);
4540                 ha->subsys = NULL;
4541
4542                 if (ha->ioctl_data) {
4543                         pci_free_consistent(ha->pcidev, ha->ioctl_len,
4544                                             ha->ioctl_data, ha->ioctl_busaddr);
4545                         ha->ioctl_data = NULL;
4546                         ha->ioctl_datasize = 0;
4547                         ha->ioctl_len = 0;
4548                 }
4549                 ips_deallocatescbs(ha, ha->max_cmds);
4550
4551                 /* free memory mapped (if applicable) */
4552                 if (ha->mem_ptr) {
4553                         iounmap(ha->ioremap_ptr);
4554                         ha->ioremap_ptr = NULL;
4555                         ha->mem_ptr = NULL;
4556                 }
4557
4558                 if (ha->mem_addr)
4559                         release_mem_region(ha->mem_addr, ha->mem_len);
4560                 ha->mem_addr = 0;
4561
4562         }
4563 }
4564
4565 /****************************************************************************/
4566 /*                                                                          */
4567 /* Routine Name: ips_deallocatescbs                                         */
4568 /*                                                                          */
4569 /* Routine Description:                                                     */
4570 /*                                                                          */
4571 /*   Free the command blocks                                                */
4572 /*                                                                          */
4573 /****************************************************************************/
4574 static int
4575 ips_deallocatescbs(ips_ha_t * ha, int cmds)
4576 {
4577         if (ha->scbs) {
4578                 pci_free_consistent(ha->pcidev,
4579                                     IPS_SGLIST_SIZE(ha) * IPS_MAX_SG * cmds,
4580                                     ha->scbs->sg_list.list,
4581                                     ha->scbs->sg_busaddr);
4582                 pci_free_consistent(ha->pcidev, sizeof (ips_scb_t) * cmds,
4583                                     ha->scbs, ha->scbs->scb_busaddr);
4584                 ha->scbs = NULL;
4585         }                       /* end if */
4586         return 1;
4587 }
4588
4589 /****************************************************************************/
4590 /*                                                                          */
4591 /* Routine Name: ips_allocatescbs                                           */
4592 /*                                                                          */
4593 /* Routine Description:                                                     */
4594 /*                                                                          */
4595 /*   Allocate the command blocks                                            */
4596 /*                                                                          */
4597 /****************************************************************************/
4598 static int
4599 ips_allocatescbs(ips_ha_t * ha)
4600 {
4601         ips_scb_t *scb_p;
4602         IPS_SG_LIST ips_sg;
4603         int i;
4604         dma_addr_t command_dma, sg_dma;
4605
4606         METHOD_TRACE("ips_allocatescbs", 1);
4607
4608         /* Allocate memory for the SCBs */
4609         ha->scbs =
4610             pci_alloc_consistent(ha->pcidev, ha->max_cmds * sizeof (ips_scb_t),
4611                                  &command_dma);
4612         if (ha->scbs == NULL)
4613                 return 0;
4614         ips_sg.list =
4615             pci_alloc_consistent(ha->pcidev,
4616                                  IPS_SGLIST_SIZE(ha) * IPS_MAX_SG *
4617                                  ha->max_cmds, &sg_dma);
4618         if (ips_sg.list == NULL) {
4619                 pci_free_consistent(ha->pcidev,
4620                                     ha->max_cmds * sizeof (ips_scb_t), ha->scbs,
4621                                     command_dma);
4622                 return 0;
4623         }
4624
4625         memset(ha->scbs, 0, ha->max_cmds * sizeof (ips_scb_t));
4626
4627         for (i = 0; i < ha->max_cmds; i++) {
4628                 scb_p = &ha->scbs[i];
4629                 scb_p->scb_busaddr = command_dma + sizeof (ips_scb_t) * i;
4630                 /* set up S/G list */
4631                 if (IPS_USE_ENH_SGLIST(ha)) {
4632                         scb_p->sg_list.enh_list =
4633                             ips_sg.enh_list + i * IPS_MAX_SG;
4634                         scb_p->sg_busaddr =
4635                             sg_dma + IPS_SGLIST_SIZE(ha) * IPS_MAX_SG * i;
4636                 } else {
4637                         scb_p->sg_list.std_list =
4638                             ips_sg.std_list + i * IPS_MAX_SG;
4639                         scb_p->sg_busaddr =
4640                             sg_dma + IPS_SGLIST_SIZE(ha) * IPS_MAX_SG * i;
4641                 }
4642
4643                 /* add to the free list */
4644                 if (i < ha->max_cmds - 1) {
4645                         scb_p->q_next = ha->scb_freelist;
4646                         ha->scb_freelist = scb_p;
4647                 }
4648         }
4649
4650         /* success */
4651         return (1);
4652 }
4653
4654 /****************************************************************************/
4655 /*                                                                          */
4656 /* Routine Name: ips_init_scb                                               */
4657 /*                                                                          */
4658 /* Routine Description:                                                     */
4659 /*                                                                          */
4660 /*   Initialize a CCB to default values                                     */
4661 /*                                                                          */
4662 /****************************************************************************/
4663 static void
4664 ips_init_scb(ips_ha_t * ha, ips_scb_t * scb)
4665 {
4666         IPS_SG_LIST sg_list;
4667         uint32_t cmd_busaddr, sg_busaddr;
4668         METHOD_TRACE("ips_init_scb", 1);
4669
4670         if (scb == NULL)
4671                 return;
4672
4673         sg_list.list = scb->sg_list.list;
4674         cmd_busaddr = scb->scb_busaddr;
4675         sg_busaddr = scb->sg_busaddr;
4676         /* zero fill */
4677         memset(scb, 0, sizeof (ips_scb_t));
4678         memset(ha->dummy, 0, sizeof (IPS_IO_CMD));
4679
4680         /* Initialize dummy command bucket */
4681         ha->dummy->op_code = 0xFF;
4682         ha->dummy->ccsar = cpu_to_le32(ha->adapt->hw_status_start
4683                                        + sizeof (IPS_ADAPTER));
4684         ha->dummy->command_id = IPS_MAX_CMDS;
4685
4686         /* set bus address of scb */
4687         scb->scb_busaddr = cmd_busaddr;
4688         scb->sg_busaddr = sg_busaddr;
4689         scb->sg_list.list = sg_list.list;
4690
4691         /* Neptune Fix */
4692         scb->cmd.basic_io.cccr = cpu_to_le32((uint32_t) IPS_BIT_ILE);
4693         scb->cmd.basic_io.ccsar = cpu_to_le32(ha->adapt->hw_status_start
4694                                               + sizeof (IPS_ADAPTER));
4695 }
4696
4697 /****************************************************************************/
4698 /*                                                                          */
4699 /* Routine Name: ips_get_scb                                                */
4700 /*                                                                          */
4701 /* Routine Description:                                                     */
4702 /*                                                                          */
4703 /*   Initialize a CCB to default values                                     */
4704 /*                                                                          */
4705 /* ASSUMED to be callled from within a lock                                 */
4706 /*                                                                          */
4707 /****************************************************************************/
4708 static ips_scb_t *
4709 ips_getscb(ips_ha_t * ha)
4710 {
4711         ips_scb_t *scb;
4712
4713         METHOD_TRACE("ips_getscb", 1);
4714
4715         if ((scb = ha->scb_freelist) == NULL) {
4716
4717                 return (NULL);
4718         }
4719
4720         ha->scb_freelist = scb->q_next;
4721         scb->flags = 0;
4722         scb->q_next = NULL;
4723
4724         ips_init_scb(ha, scb);
4725
4726         return (scb);
4727 }
4728
4729 /****************************************************************************/
4730 /*                                                                          */
4731 /* Routine Name: ips_free_scb                                               */
4732 /*                                                                          */
4733 /* Routine Description:                                                     */
4734 /*                                                                          */
4735 /*   Return an unused CCB back to the free list                             */
4736 /*                                                                          */
4737 /* ASSUMED to be called from within a lock                                  */
4738 /*                                                                          */
4739 /****************************************************************************/
4740 static void
4741 ips_freescb(ips_ha_t * ha, ips_scb_t * scb)
4742 {
4743
4744         METHOD_TRACE("ips_freescb", 1);
4745         if (scb->flags & IPS_SCB_MAP_SG)
4746                 pci_unmap_sg(ha->pcidev, scb->scsi_cmd->request_buffer,
4747                              scb->scsi_cmd->use_sg, IPS_DMA_DIR(scb));
4748         else if (scb->flags & IPS_SCB_MAP_SINGLE)
4749                 pci_unmap_single(ha->pcidev, scb->data_busaddr, scb->data_len,
4750                                  IPS_DMA_DIR(scb));
4751
4752         /* check to make sure this is not our "special" scb */
4753         if (IPS_COMMAND_ID(ha, scb) < (ha->max_cmds - 1)) {
4754                 scb->q_next = ha->scb_freelist;
4755                 ha->scb_freelist = scb;
4756         }
4757 }
4758
4759 /****************************************************************************/
4760 /*                                                                          */
4761 /* Routine Name: ips_isinit_copperhead                                      */
4762 /*                                                                          */
4763 /* Routine Description:                                                     */
4764 /*                                                                          */
4765 /*   Is controller initialized ?                                            */
4766 /*                                                                          */
4767 /****************************************************************************/
4768 static int
4769 ips_isinit_copperhead(ips_ha_t * ha)
4770 {
4771         uint8_t scpr;
4772         uint8_t isr;
4773
4774         METHOD_TRACE("ips_isinit_copperhead", 1);
4775
4776         isr = inb(ha->io_addr + IPS_REG_HISR);
4777         scpr = inb(ha->io_addr + IPS_REG_SCPR);
4778
4779         if (((isr & IPS_BIT_EI) == 0) && ((scpr & IPS_BIT_EBM) == 0))
4780                 return (0);
4781         else
4782                 return (1);
4783 }
4784
4785 /****************************************************************************/
4786 /*                                                                          */
4787 /* Routine Name: ips_isinit_copperhead_memio                                */
4788 /*                                                                          */
4789 /* Routine Description:                                                     */
4790 /*                                                                          */
4791 /*   Is controller initialized ?                                            */
4792 /*                                                                          */
4793 /****************************************************************************/
4794 static int
4795 ips_isinit_copperhead_memio(ips_ha_t * ha)
4796 {
4797         uint8_t isr = 0;
4798         uint8_t scpr;
4799
4800         METHOD_TRACE("ips_is_init_copperhead_memio", 1);
4801
4802         isr = readb(ha->mem_ptr + IPS_REG_HISR);
4803         scpr = readb(ha->mem_ptr + IPS_REG_SCPR);
4804
4805         if (((isr & IPS_BIT_EI) == 0) && ((scpr & IPS_BIT_EBM) == 0))
4806                 return (0);
4807         else
4808                 return (1);
4809 }
4810
4811 /****************************************************************************/
4812 /*                                                                          */
4813 /* Routine Name: ips_isinit_morpheus                                        */
4814 /*                                                                          */
4815 /* Routine Description:                                                     */
4816 /*                                                                          */
4817 /*   Is controller initialized ?                                            */
4818 /*                                                                          */
4819 /****************************************************************************/
4820 static int
4821 ips_isinit_morpheus(ips_ha_t * ha)
4822 {
4823         uint32_t post;
4824         uint32_t bits;
4825
4826         METHOD_TRACE("ips_is_init_morpheus", 1);
4827    
4828         if (ips_isintr_morpheus(ha)) 
4829             ips_flush_and_reset(ha);
4830
4831         post = readl(ha->mem_ptr + IPS_REG_I960_MSG0);
4832         bits = readl(ha->mem_ptr + IPS_REG_I2O_HIR);
4833
4834         if (post == 0)
4835                 return (0);
4836         else if (bits & 0x3)
4837                 return (0);
4838         else
4839                 return (1);
4840 }
4841
4842 /****************************************************************************/