blob: f5c3caf344a7626b4c87bf670595e6fa120a5bc6 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/* -*- mode: c; c-basic-offset: 8 -*- */
2
3/* Driver for 53c700 and 53c700-66 chips from NCR and Symbios
4 *
5 * Copyright (C) 2001 by James.Bottomley@HansenPartnership.com
6 */
7
8#ifndef _53C700_H
9#define _53C700_H
10
11#include <linux/interrupt.h>
12#include <asm/io.h>
13
14#include <scsi/scsi_device.h>
James Bottomley0f13fc02006-06-29 13:02:11 -040015#include <scsi/scsi_cmnd.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070016
Linus Torvalds1da177e2005-04-16 15:20:36 -070017/* Turn on for general debugging---too verbose for normal use */
18#undef NCR_700_DEBUG
19/* Debug the tag queues, checking hash queue allocation and deallocation
20 * and search for duplicate tags */
21#undef NCR_700_TAG_DEBUG
22
23#ifdef NCR_700_DEBUG
24#define DEBUG(x) printk x
Jeff Garzik017560f2005-10-24 18:04:36 -040025#define DDEBUG(prefix, sdev, fmt, a...) \
26 sdev_printk(prefix, sdev, fmt, ##a)
27#define CDEBUG(prefix, scmd, fmt, a...) \
28 scmd_printk(prefix, scmd, fmt, ##a)
Linus Torvalds1da177e2005-04-16 15:20:36 -070029#else
Jeff Garzik017560f2005-10-24 18:04:36 -040030#define DEBUG(x) do {} while (0)
31#define DDEBUG(prefix, scmd, fmt, a...) do {} while (0)
32#define CDEBUG(prefix, scmd, fmt, a...) do {} while (0)
Linus Torvalds1da177e2005-04-16 15:20:36 -070033#endif
34
35/* The number of available command slots */
36#define NCR_700_COMMAND_SLOTS_PER_HOST 64
37/* The maximum number of Scatter Gathers we allow */
38#define NCR_700_SG_SEGMENTS 32
39/* The maximum number of luns (make this of the form 2^n) */
40#define NCR_700_MAX_LUNS 32
41#define NCR_700_LUN_MASK (NCR_700_MAX_LUNS - 1)
42/* Maximum number of tags the driver ever allows per device */
43#define NCR_700_MAX_TAGS 16
44/* Tag depth the driver starts out with (can be altered in sysfs) */
45#define NCR_700_DEFAULT_TAGS 4
46/* This is the default number of commands per LUN in the untagged case.
47 * two is a good value because it means we can have one command active and
48 * one command fully prepared and waiting
49 */
50#define NCR_700_CMD_PER_LUN 2
51/* magic byte identifying an internally generated REQUEST_SENSE command */
52#define NCR_700_INTERNAL_SENSE_MAGIC 0x42
53
Linus Torvalds1da177e2005-04-16 15:20:36 -070054struct NCR_700_Host_Parameters;
55
56/* These are the externally used routines */
57struct Scsi_Host *NCR_700_detect(struct scsi_host_template *,
58 struct NCR_700_Host_Parameters *, struct device *);
59int NCR_700_release(struct Scsi_Host *host);
David Howells7d12e782006-10-05 14:55:46 +010060irqreturn_t NCR_700_intr(int, void *);
Linus Torvalds1da177e2005-04-16 15:20:36 -070061
62
63enum NCR_700_Host_State {
64 NCR_700_HOST_BUSY,
65 NCR_700_HOST_FREE,
66};
67
68struct NCR_700_SG_List {
69 /* The following is a script fragment to move the buffer onto the
70 * bus and then link the next fragment or return */
71 #define SCRIPT_MOVE_DATA_IN 0x09000000
72 #define SCRIPT_MOVE_DATA_OUT 0x08000000
73 __u32 ins;
74 __u32 pAddr;
75 #define SCRIPT_NOP 0x80000000
76 #define SCRIPT_RETURN 0x90080000
77};
78
James Bottomley0f13fc02006-06-29 13:02:11 -040079struct NCR_700_Device_Parameters {
80 /* space for creating a request sense command. Really, except
81 * for the annoying SCSI-2 requirement for LUN information in
82 * cmnd[1], this could be in static storage */
83 unsigned char cmnd[MAX_COMMAND_SIZE];
84 __u8 depth;
85};
86
87
88/* The SYNC negotiation sequence looks like:
Linus Torvalds1da177e2005-04-16 15:20:36 -070089 *
90 * If DEV_NEGOTIATED_SYNC not set, tack and SDTR message on to the
91 * initial identify for the device and set DEV_BEGIN_SYNC_NEGOTATION
92 * If we get an SDTR reply, work out the SXFER parameters, squirrel
93 * them away here, clear DEV_BEGIN_SYNC_NEGOTIATION and set
94 * DEV_NEGOTIATED_SYNC. If we get a REJECT msg, squirrel
95 *
96 *
97 * 0:7 SXFER_REG negotiated value for this device
98 * 8:15 Current queue depth
99 * 16 negotiated SYNC flag
100 * 17 begin SYNC negotiation flag
101 * 18 device supports tag queueing */
102#define NCR_700_DEV_NEGOTIATED_SYNC (1<<16)
103#define NCR_700_DEV_BEGIN_SYNC_NEGOTIATION (1<<17)
104#define NCR_700_DEV_PRINT_SYNC_NEGOTIATION (1<<19)
105
James Bottomley0f13fc02006-06-29 13:02:11 -0400106static inline char *NCR_700_get_sense_cmnd(struct scsi_device *SDp)
107{
108 struct NCR_700_Device_Parameters *hostdata = SDp->hostdata;
109
110 return hostdata->cmnd;
111}
112
Linus Torvalds1da177e2005-04-16 15:20:36 -0700113static inline void
114NCR_700_set_depth(struct scsi_device *SDp, __u8 depth)
115{
James Bottomley0f13fc02006-06-29 13:02:11 -0400116 struct NCR_700_Device_Parameters *hostdata = SDp->hostdata;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700117
James Bottomley0f13fc02006-06-29 13:02:11 -0400118 hostdata->depth = depth;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700119}
120static inline __u8
121NCR_700_get_depth(struct scsi_device *SDp)
122{
James Bottomley0f13fc02006-06-29 13:02:11 -0400123 struct NCR_700_Device_Parameters *hostdata = SDp->hostdata;
124
125 return hostdata->depth;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700126}
127static inline int
128NCR_700_is_flag_set(struct scsi_device *SDp, __u32 flag)
129{
130 return (spi_flags(SDp->sdev_target) & flag) == flag;
131}
132static inline int
133NCR_700_is_flag_clear(struct scsi_device *SDp, __u32 flag)
134{
135 return (spi_flags(SDp->sdev_target) & flag) == 0;
136}
137static inline void
138NCR_700_set_flag(struct scsi_device *SDp, __u32 flag)
139{
140 spi_flags(SDp->sdev_target) |= flag;
141}
142static inline void
143NCR_700_clear_flag(struct scsi_device *SDp, __u32 flag)
144{
145 spi_flags(SDp->sdev_target) &= ~flag;
146}
147
148enum NCR_700_tag_neg_state {
149 NCR_700_START_TAG_NEGOTIATION = 0,
150 NCR_700_DURING_TAG_NEGOTIATION = 1,
151 NCR_700_FINISHED_TAG_NEGOTIATION = 2,
152};
153
154static inline enum NCR_700_tag_neg_state
155NCR_700_get_tag_neg_state(struct scsi_device *SDp)
156{
157 return (enum NCR_700_tag_neg_state)((spi_flags(SDp->sdev_target)>>20) & 0x3);
158}
159
160static inline void
161NCR_700_set_tag_neg_state(struct scsi_device *SDp,
162 enum NCR_700_tag_neg_state state)
163{
164 /* clear the slot */
165 spi_flags(SDp->sdev_target) &= ~(0x3 << 20);
166 spi_flags(SDp->sdev_target) |= ((__u32)state) << 20;
167}
168
169struct NCR_700_command_slot {
170 struct NCR_700_SG_List SG[NCR_700_SG_SEGMENTS+1];
171 struct NCR_700_SG_List *pSG;
172 #define NCR_700_SLOT_MASK 0xFC
173 #define NCR_700_SLOT_MAGIC 0xb8
174 #define NCR_700_SLOT_FREE (0|NCR_700_SLOT_MAGIC) /* slot may be used */
175 #define NCR_700_SLOT_BUSY (1|NCR_700_SLOT_MAGIC) /* slot has command active on HA */
176 #define NCR_700_SLOT_QUEUED (2|NCR_700_SLOT_MAGIC) /* slot has command to be made active on HA */
177 __u8 state;
James Bottomley67d59df2006-06-13 21:31:19 -0500178 #define NCR_700_FLAG_AUTOSENSE 0x01
179 __u8 flags;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700180 int tag;
181 __u32 resume_offset;
182 struct scsi_cmnd *cmnd;
183 /* The pci_mapped address of the actual command in cmnd */
184 dma_addr_t pCmd;
185 __u32 temp;
186 /* if this command is a pci_single mapping, holds the dma address
187 * for later unmapping in the done routine */
188 dma_addr_t dma_handle;
189 /* historical remnant, now used to link free commands */
190 struct NCR_700_command_slot *ITL_forw;
191};
192
193struct NCR_700_Host_Parameters {
194 /* These must be filled in by the calling driver */
195 int clock; /* board clock speed in MHz */
56fece22005-04-03 03:57:48 -0600196 void __iomem *base; /* the base for the port (copied to host) */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700197 struct device *dev;
198 __u32 dmode_extra; /* adjustable bus settings */
199 __u32 differential:1; /* if we are differential */
200#ifdef CONFIG_53C700_LE_ON_BE
201 /* This option is for HP only. Set it if your chip is wired for
202 * little endian on this platform (which is big endian) */
203 __u32 force_le_on_be:1;
204#endif
205 __u32 chip710:1; /* set if really a 710 not 700 */
206 __u32 burst_disable:1; /* set to 1 to disable 710 bursting */
207
208 /* NOTHING BELOW HERE NEEDS ALTERING */
209 __u32 fast:1; /* if we can alter the SCSI bus clock
210 speed (so can negiotiate sync) */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700211 int sync_clock; /* The speed of the SYNC core */
212
213 __u32 *script; /* pointer to script location */
214 __u32 pScript; /* physical mem addr of script */
215
216 enum NCR_700_Host_State state; /* protected by state lock */
217 struct scsi_cmnd *cmd;
218 /* Note: pScript contains the single consistent block of
219 * memory. All the msgin, msgout and status are allocated in
220 * this memory too (at separate cache lines). TOTAL_MEM_SIZE
221 * represents the total size of this area */
222#define MSG_ARRAY_SIZE 8
223#define MSGOUT_OFFSET (L1_CACHE_ALIGN(sizeof(SCRIPT)))
224 __u8 *msgout;
225#define MSGIN_OFFSET (MSGOUT_OFFSET + L1_CACHE_ALIGN(MSG_ARRAY_SIZE))
226 __u8 *msgin;
227#define STATUS_OFFSET (MSGIN_OFFSET + L1_CACHE_ALIGN(MSG_ARRAY_SIZE))
228 __u8 *status;
229#define SLOTS_OFFSET (STATUS_OFFSET + L1_CACHE_ALIGN(MSG_ARRAY_SIZE))
230 struct NCR_700_command_slot *slots;
231#define TOTAL_MEM_SIZE (SLOTS_OFFSET + L1_CACHE_ALIGN(sizeof(struct NCR_700_command_slot) * NCR_700_COMMAND_SLOTS_PER_HOST))
232 int saved_slot_position;
233 int command_slot_count; /* protected by state lock */
234 __u8 tag_negotiated;
235 __u8 rev;
236 __u8 reselection_id;
237 __u8 min_period;
238
239 /* Free list, singly linked by ITL_forw elements */
240 struct NCR_700_command_slot *free_list;
241 /* Completion for waited for ops, like reset, abort or
242 * device reset.
243 *
244 * NOTE: relies on single threading in the error handler to
245 * have only one outstanding at once */
246 struct completion *eh_complete;
247};
248
249/*
250 * 53C700 Register Interface - the offset from the Selected base
251 * I/O address */
252#ifdef CONFIG_53C700_LE_ON_BE
253#define bE (hostdata->force_le_on_be ? 0 : 3)
254#define bSWAP (hostdata->force_le_on_be)
James Bottomley8f23d472005-11-29 16:24:52 -0600255#define bEBus (!hostdata->force_le_on_be)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700256#elif defined(__BIG_ENDIAN)
257#define bE 3
258#define bSWAP 0
259#elif defined(__LITTLE_ENDIAN)
260#define bE 0
261#define bSWAP 0
262#else
263#error "__BIG_ENDIAN or __LITTLE_ENDIAN must be defined, did you include byteorder.h?"
264#endif
James Bottomley8f23d472005-11-29 16:24:52 -0600265#ifndef bEBus
266#ifdef CONFIG_53C700_BE_BUS
267#define bEBus 1
268#else
269#define bEBus 0
270#endif
271#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700272#define bS_to_cpu(x) (bSWAP ? le32_to_cpu(x) : (x))
273#define bS_to_host(x) (bSWAP ? cpu_to_le32(x) : (x))
274
275/* NOTE: These registers are in the LE register space only, the required byte
276 * swapping is done by the NCR_700_{read|write}[b] functions */
277#define SCNTL0_REG 0x00
278#define FULL_ARBITRATION 0xc0
279#define PARITY 0x08
280#define ENABLE_PARITY 0x04
281#define AUTO_ATN 0x02
282#define SCNTL1_REG 0x01
283#define SLOW_BUS 0x80
284#define ENABLE_SELECT 0x20
285#define ASSERT_RST 0x08
286#define ASSERT_EVEN_PARITY 0x04
287#define SDID_REG 0x02
288#define SIEN_REG 0x03
289#define PHASE_MM_INT 0x80
290#define FUNC_COMP_INT 0x40
291#define SEL_TIMEOUT_INT 0x20
292#define SELECT_INT 0x10
293#define GROSS_ERR_INT 0x08
294#define UX_DISC_INT 0x04
295#define RST_INT 0x02
296#define PAR_ERR_INT 0x01
297#define SCID_REG 0x04
298#define SXFER_REG 0x05
299#define ASYNC_OPERATION 0x00
300#define SODL_REG 0x06
301#define SOCL_REG 0x07
302#define SFBR_REG 0x08
303#define SIDL_REG 0x09
304#define SBDL_REG 0x0A
305#define SBCL_REG 0x0B
306/* read bits */
307#define SBCL_IO 0x01
308/*write bits */
309#define SYNC_DIV_AS_ASYNC 0x00
310#define SYNC_DIV_1_0 0x01
311#define SYNC_DIV_1_5 0x02
312#define SYNC_DIV_2_0 0x03
313#define DSTAT_REG 0x0C
314#define ILGL_INST_DETECTED 0x01
315#define WATCH_DOG_INTERRUPT 0x02
316#define SCRIPT_INT_RECEIVED 0x04
317#define ABORTED 0x10
318#define SSTAT0_REG 0x0D
319#define PARITY_ERROR 0x01
320#define SCSI_RESET_DETECTED 0x02
321#define UNEXPECTED_DISCONNECT 0x04
322#define SCSI_GROSS_ERROR 0x08
323#define SELECTED 0x10
324#define SELECTION_TIMEOUT 0x20
325#define FUNCTION_COMPLETE 0x40
326#define PHASE_MISMATCH 0x80
327#define SSTAT1_REG 0x0E
328#define SIDL_REG_FULL 0x80
329#define SODR_REG_FULL 0x40
330#define SODL_REG_FULL 0x20
331#define SSTAT2_REG 0x0F
332#define CTEST0_REG 0x14
333#define BTB_TIMER_DISABLE 0x40
334#define CTEST1_REG 0x15
335#define CTEST2_REG 0x16
336#define CTEST3_REG 0x17
337#define CTEST4_REG 0x18
338#define DISABLE_FIFO 0x00
339#define SLBE 0x10
340#define SFWR 0x08
341#define BYTE_LANE0 0x04
342#define BYTE_LANE1 0x05
343#define BYTE_LANE2 0x06
344#define BYTE_LANE3 0x07
345#define SCSI_ZMODE 0x20
346#define ZMODE 0x40
347#define CTEST5_REG 0x19
348#define MASTER_CONTROL 0x10
349#define DMA_DIRECTION 0x08
350#define CTEST7_REG 0x1B
351#define BURST_DISABLE 0x80 /* 710 only */
352#define SEL_TIMEOUT_DISABLE 0x10 /* 710 only */
353#define DFP 0x08
354#define EVP 0x04
355#define DIFF 0x01
356#define CTEST6_REG 0x1A
357#define TEMP_REG 0x1C
358#define DFIFO_REG 0x20
359#define FLUSH_DMA_FIFO 0x80
360#define CLR_FIFO 0x40
361#define ISTAT_REG 0x21
362#define ABORT_OPERATION 0x80
363#define SOFTWARE_RESET_710 0x40
364#define DMA_INT_PENDING 0x01
365#define SCSI_INT_PENDING 0x02
366#define CONNECTED 0x08
367#define CTEST8_REG 0x22
368#define LAST_DIS_ENBL 0x01
369#define SHORTEN_FILTERING 0x04
370#define ENABLE_ACTIVE_NEGATION 0x10
371#define GENERATE_RECEIVE_PARITY 0x20
372#define CLR_FIFO_710 0x04
373#define FLUSH_DMA_FIFO_710 0x08
374#define CTEST9_REG 0x23
375#define DBC_REG 0x24
376#define DCMD_REG 0x27
377#define DNAD_REG 0x28
378#define DIEN_REG 0x39
379#define BUS_FAULT 0x20
380#define ABORT_INT 0x10
381#define INT_INST_INT 0x04
382#define WD_INT 0x02
383#define ILGL_INST_INT 0x01
384#define DCNTL_REG 0x3B
385#define SOFTWARE_RESET 0x01
386#define COMPAT_700_MODE 0x01
387#define SCRPTS_16BITS 0x20
388#define ASYNC_DIV_2_0 0x00
389#define ASYNC_DIV_1_5 0x40
390#define ASYNC_DIV_1_0 0x80
391#define ASYNC_DIV_3_0 0xc0
392#define DMODE_710_REG 0x38
393#define DMODE_700_REG 0x34
394#define BURST_LENGTH_1 0x00
395#define BURST_LENGTH_2 0x40
396#define BURST_LENGTH_4 0x80
397#define BURST_LENGTH_8 0xC0
398#define DMODE_FC1 0x10
399#define DMODE_FC2 0x20
400#define BW16 32
401#define MODE_286 16
402#define IO_XFER 8
403#define FIXED_ADDR 4
404
405#define DSP_REG 0x2C
406#define DSPS_REG 0x30
407
408/* Parameters to begin SDTR negotiations. Empirically, I find that
409 * the 53c700-66 cannot handle an offset >8, so don't change this */
410#define NCR_700_MAX_OFFSET 8
411/* Was hoping the max offset would be greater for the 710, but
412 * empirically it seems to be 8 also */
413#define NCR_710_MAX_OFFSET 8
414#define NCR_700_MIN_XFERP 1
415#define NCR_710_MIN_XFERP 0
416#define NCR_700_MIN_PERIOD 25 /* for SDTR message, 100ns */
417
418#define script_patch_32(script, symbol, value) \
419{ \
420 int i; \
421 for(i=0; i< (sizeof(A_##symbol##_used) / sizeof(__u32)); i++) { \
422 __u32 val = bS_to_cpu((script)[A_##symbol##_used[i]]) + value; \
423 (script)[A_##symbol##_used[i]] = bS_to_host(val); \
424 dma_cache_sync(&(script)[A_##symbol##_used[i]], 4, DMA_TO_DEVICE); \
425 DEBUG((" script, patching %s at %d to 0x%lx\n", \
426 #symbol, A_##symbol##_used[i], (value))); \
427 } \
428}
429
430#define script_patch_32_abs(script, symbol, value) \
431{ \
432 int i; \
433 for(i=0; i< (sizeof(A_##symbol##_used) / sizeof(__u32)); i++) { \
434 (script)[A_##symbol##_used[i]] = bS_to_host(value); \
435 dma_cache_sync(&(script)[A_##symbol##_used[i]], 4, DMA_TO_DEVICE); \
436 DEBUG((" script, patching %s at %d to 0x%lx\n", \
437 #symbol, A_##symbol##_used[i], (value))); \
438 } \
439}
440
441/* Used for patching the SCSI ID in the SELECT instruction */
442#define script_patch_ID(script, symbol, value) \
443{ \
444 int i; \
445 for(i=0; i< (sizeof(A_##symbol##_used) / sizeof(__u32)); i++) { \
446 __u32 val = bS_to_cpu((script)[A_##symbol##_used[i]]); \
447 val &= 0xff00ffff; \
448 val |= ((value) & 0xff) << 16; \
449 (script)[A_##symbol##_used[i]] = bS_to_host(val); \
450 dma_cache_sync(&(script)[A_##symbol##_used[i]], 4, DMA_TO_DEVICE); \
451 DEBUG((" script, patching ID field %s at %d to 0x%x\n", \
452 #symbol, A_##symbol##_used[i], val)); \
453 } \
454}
455
456#define script_patch_16(script, symbol, value) \
457{ \
458 int i; \
459 for(i=0; i< (sizeof(A_##symbol##_used) / sizeof(__u32)); i++) { \
460 __u32 val = bS_to_cpu((script)[A_##symbol##_used[i]]); \
461 val &= 0xffff0000; \
462 val |= ((value) & 0xffff); \
463 (script)[A_##symbol##_used[i]] = bS_to_host(val); \
464 dma_cache_sync(&(script)[A_##symbol##_used[i]], 4, DMA_TO_DEVICE); \
465 DEBUG((" script, patching short field %s at %d to 0x%x\n", \
466 #symbol, A_##symbol##_used[i], val)); \
467 } \
468}
469
470
471static inline __u8
Linus Torvalds1da177e2005-04-16 15:20:36 -0700472NCR_700_readb(struct Scsi_Host *host, __u32 reg)
473{
56fece22005-04-03 03:57:48 -0600474 const struct NCR_700_Host_Parameters *hostdata
Linus Torvalds1da177e2005-04-16 15:20:36 -0700475 = (struct NCR_700_Host_Parameters *)host->hostdata[0];
476
56fece22005-04-03 03:57:48 -0600477 return ioread8(hostdata->base + (reg^bE));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700478}
479
480static inline __u32
481NCR_700_readl(struct Scsi_Host *host, __u32 reg)
482{
56fece22005-04-03 03:57:48 -0600483 const struct NCR_700_Host_Parameters *hostdata
Linus Torvalds1da177e2005-04-16 15:20:36 -0700484 = (struct NCR_700_Host_Parameters *)host->hostdata[0];
James Bottomley8f23d472005-11-29 16:24:52 -0600485 __u32 value = bEBus ? ioread32be(hostdata->base + reg) :
486 ioread32(hostdata->base + reg);
56fece22005-04-03 03:57:48 -0600487#if 1
488 /* sanity check the register */
Eric Sesterhenn125e1872006-06-23 02:06:06 -0700489 BUG_ON((reg & 0x3) != 0);
56fece22005-04-03 03:57:48 -0600490#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700491
James Bottomley8f23d472005-11-29 16:24:52 -0600492 return value;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700493}
494
495static inline void
496NCR_700_writeb(__u8 value, struct Scsi_Host *host, __u32 reg)
497{
56fece22005-04-03 03:57:48 -0600498 const struct NCR_700_Host_Parameters *hostdata
Linus Torvalds1da177e2005-04-16 15:20:36 -0700499 = (struct NCR_700_Host_Parameters *)host->hostdata[0];
500
56fece22005-04-03 03:57:48 -0600501 iowrite8(value, hostdata->base + (reg^bE));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700502}
503
504static inline void
505NCR_700_writel(__u32 value, struct Scsi_Host *host, __u32 reg)
506{
56fece22005-04-03 03:57:48 -0600507 const struct NCR_700_Host_Parameters *hostdata
Linus Torvalds1da177e2005-04-16 15:20:36 -0700508 = (struct NCR_700_Host_Parameters *)host->hostdata[0];
509
56fece22005-04-03 03:57:48 -0600510#if 1
511 /* sanity check the register */
Eric Sesterhenn125e1872006-06-23 02:06:06 -0700512 BUG_ON((reg & 0x3) != 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700513#endif
514
James Bottomley8f23d472005-11-29 16:24:52 -0600515 bEBus ? iowrite32be(value, hostdata->base + reg):
516 iowrite32(value, hostdata->base + reg);
56fece22005-04-03 03:57:48 -0600517}
518
Linus Torvalds1da177e2005-04-16 15:20:36 -0700519#endif