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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*=======================================================/
2 Header file for nsp_cs.c
3 By: YOKOTA Hiroshi <yokota@netlab.is.tsukuba.ac.jp>
4
5 Ver.1.0 : Cut unused lines.
6 Ver 0.1 : Initial version.
7
8 This software may be used and distributed according to the terms of
9 the GNU General Public License.
10
11=========================================================*/
12
Linus Torvalds1da177e2005-04-16 15:20:36 -070013#ifndef __nsp_cs__
14#define __nsp_cs__
15
16/* for debugging */
17//#define NSP_DEBUG 9
18
19/*
20#define static
21#define inline
22*/
23
24/************************************
25 * Some useful macros...
26 */
Linus Torvalds1da177e2005-04-16 15:20:36 -070027
28/* SCSI initiator must be ID 7 */
29#define NSP_INITIATOR_ID 7
30
31#define NSP_SELTIMEOUT 200
32
33/***************************************************************************
34 * register definitions
35 ***************************************************************************/
36/*========================================================================
37 * base register
38 ========================================================================*/
39#define IRQCONTROL 0x00 /* R */
40# define IRQCONTROL_RESELECT_CLEAR BIT(0)
41# define IRQCONTROL_PHASE_CHANGE_CLEAR BIT(1)
42# define IRQCONTROL_TIMER_CLEAR BIT(2)
43# define IRQCONTROL_FIFO_CLEAR BIT(3)
44# define IRQCONTROL_ALLMASK 0xff
45# define IRQCONTROL_ALLCLEAR (IRQCONTROL_RESELECT_CLEAR | \
46 IRQCONTROL_PHASE_CHANGE_CLEAR | \
47 IRQCONTROL_TIMER_CLEAR | \
48 IRQCONTROL_FIFO_CLEAR )
49# define IRQCONTROL_IRQDISABLE 0xf0
50
51#define IRQSTATUS 0x00 /* W */
52# define IRQSTATUS_SCSI BIT(0)
53# define IRQSTATUS_TIMER BIT(2)
54# define IRQSTATUS_FIFO BIT(3)
55# define IRQSTATUS_MASK 0x0f
56
57#define IFSELECT 0x01 /* W */
58# define IF_IFSEL BIT(0)
59# define IF_REGSEL BIT(2)
60
61#define FIFOSTATUS 0x01 /* R */
62# define FIFOSTATUS_CHIP_REVISION_MASK 0x0f
63# define FIFOSTATUS_CHIP_ID_MASK 0x70
64# define FIFOSTATUS_FULL_EMPTY BIT(7)
65
66#define INDEXREG 0x02 /* R/W */
67#define DATAREG 0x03 /* R/W */
68#define FIFODATA 0x04 /* R/W */
69#define FIFODATA1 0x05 /* R/W */
70#define FIFODATA2 0x06 /* R/W */
71#define FIFODATA3 0x07 /* R/W */
72
73/*====================================================================
74 * indexed register
75 ====================================================================*/
76#define EXTBUSCTRL 0x10 /* R/W,deleted */
77
78#define CLOCKDIV 0x11 /* R/W */
79# define CLOCK_40M 0x02
80# define CLOCK_20M 0x01
81# define FAST_20 BIT(2)
82
83#define TERMPWRCTRL 0x13 /* R/W */
84# define POWER_ON BIT(0)
85
86#define SCSIIRQMODE 0x15 /* R/W */
87# define SCSI_PHASE_CHANGE_EI BIT(0)
88# define RESELECT_EI BIT(4)
89# define FIFO_IRQ_EI BIT(5)
90# define SCSI_RESET_IRQ_EI BIT(6)
91
92#define IRQPHASESENCE 0x16 /* R */
93# define LATCHED_MSG BIT(0)
94# define LATCHED_IO BIT(1)
95# define LATCHED_CD BIT(2)
96# define LATCHED_BUS_FREE BIT(3)
97# define PHASE_CHANGE_IRQ BIT(4)
98# define RESELECT_IRQ BIT(5)
99# define FIFO_IRQ BIT(6)
100# define SCSI_RESET_IRQ BIT(7)
101
102#define TIMERCOUNT 0x17 /* R/W */
103
104#define SCSIBUSCTRL 0x18 /* R/W */
105# define SCSI_SEL BIT(0)
106# define SCSI_RST BIT(1)
107# define SCSI_DATAOUT_ENB BIT(2)
108# define SCSI_ATN BIT(3)
109# define SCSI_ACK BIT(4)
110# define SCSI_BSY BIT(5)
111# define AUTODIRECTION BIT(6)
112# define ACKENB BIT(7)
113
114#define SCSIBUSMON 0x19 /* R */
115
116#define SETARBIT 0x1A /* W */
117# define ARBIT_GO BIT(0)
118# define ARBIT_FLAG_CLEAR BIT(1)
119
120#define ARBITSTATUS 0x1A /* R */
121/*# define ARBIT_GO BIT(0)*/
122# define ARBIT_WIN BIT(1)
123# define ARBIT_FAIL BIT(2)
124# define RESELECT_FLAG BIT(3)
125
126#define PARITYCTRL 0x1B /* W */
127#define PARITYSTATUS 0x1B /* R */
128
129#define COMMANDCTRL 0x1C /* W */
130# define CLEAR_COMMAND_POINTER BIT(0)
131# define AUTO_COMMAND_GO BIT(1)
132
133#define RESELECTID 0x1C /* R */
134#define COMMANDDATA 0x1D /* R/W */
135
136#define POINTERCLR 0x1E /* W */
137# define POINTER_CLEAR BIT(0)
138# define ACK_COUNTER_CLEAR BIT(1)
139# define REQ_COUNTER_CLEAR BIT(2)
140# define HOST_COUNTER_CLEAR BIT(3)
141# define READ_SOURCE (BIT(4) | BIT(5))
142# define ACK_COUNTER (0)
143# define REQ_COUNTER (BIT(4))
144# define HOST_COUNTER (BIT(5))
145
146#define TRANSFERCOUNT 0x1E /* R */
147
148#define TRANSFERMODE 0x20 /* R/W */
149# define MODE_MEM8 BIT(0)
150# define MODE_MEM32 BIT(1)
151# define MODE_ADR24 BIT(2)
152# define MODE_ADR32 BIT(3)
153# define MODE_IO8 BIT(4)
154# define MODE_IO32 BIT(5)
155# define TRANSFER_GO BIT(6)
156# define BRAIND BIT(7)
157
158#define SYNCREG 0x21 /* R/W */
159# define SYNCREG_OFFSET_MASK 0x0f
160# define SYNCREG_PERIOD_MASK 0xf0
161# define SYNCREG_PERIOD_SHIFT 4
162
163#define SCSIDATALATCH 0x22 /* W */
164#define SCSIDATAIN 0x22 /* R */
165#define SCSIDATAWITHACK 0x23 /* R/W */
166#define SCAMCONTROL 0x24 /* W */
167#define SCAMSTATUS 0x24 /* R */
168#define SCAMDATA 0x25 /* R/W */
169
170#define OTHERCONTROL 0x26 /* R/W */
171# define TPL_ROM_WRITE_EN BIT(0)
172# define TPWR_OUT BIT(1)
173# define TPWR_SENSE BIT(2)
174# define RA8_CONTROL BIT(3)
175
176#define ACKWIDTH 0x27 /* R/W */
177#define CLRTESTPNT 0x28 /* W */
178#define ACKCNTLD 0x29 /* W */
179#define REQCNTLD 0x2A /* W */
180#define HSTCNTLD 0x2B /* W */
181#define CHECKSUM 0x2C /* R/W */
182
183/************************************************************************
184 * Input status bit definitions.
185 ************************************************************************/
186#define S_MESSAGE BIT(0) /* Message line from SCSI bus */
187#define S_IO BIT(1) /* Input/Output line from SCSI bus */
188#define S_CD BIT(2) /* Command/Data line from SCSI bus */
189#define S_BUSY BIT(3) /* Busy line from SCSI bus */
Daniel Mack3ad2f3f2010-02-03 08:01:28 +0800190#define S_ACK BIT(4) /* Acknowledge line from SCSI bus */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700191#define S_REQUEST BIT(5) /* Request line from SCSI bus */
192#define S_SELECT BIT(6) /* */
193#define S_ATN BIT(7) /* */
194
195/***********************************************************************
196 * Useful Bus Monitor status combinations.
197 ***********************************************************************/
198#define BUSMON_SEL S_SELECT
199#define BUSMON_BSY S_BUSY
200#define BUSMON_REQ S_REQUEST
201#define BUSMON_IO S_IO
202#define BUSMON_ACK S_ACK
203#define BUSMON_BUS_FREE 0
204#define BUSMON_COMMAND ( S_BUSY | S_CD | S_REQUEST )
205#define BUSMON_MESSAGE_IN ( S_BUSY | S_CD | S_IO | S_MESSAGE | S_REQUEST )
206#define BUSMON_MESSAGE_OUT ( S_BUSY | S_CD | S_MESSAGE | S_REQUEST )
207#define BUSMON_DATA_IN ( S_BUSY | S_IO | S_REQUEST )
208#define BUSMON_DATA_OUT ( S_BUSY | S_REQUEST )
209#define BUSMON_STATUS ( S_BUSY | S_CD | S_IO | S_REQUEST )
210#define BUSMON_SELECT ( S_IO | S_SELECT )
211#define BUSMON_RESELECT ( S_IO | S_SELECT )
212#define BUSMON_PHASE_MASK ( S_CD | S_IO | S_MESSAGE | S_SELECT )
213
214#define BUSPHASE_SELECT ( BUSMON_SELECT & BUSMON_PHASE_MASK )
215#define BUSPHASE_COMMAND ( BUSMON_COMMAND & BUSMON_PHASE_MASK )
216#define BUSPHASE_MESSAGE_IN ( BUSMON_MESSAGE_IN & BUSMON_PHASE_MASK )
217#define BUSPHASE_MESSAGE_OUT ( BUSMON_MESSAGE_OUT & BUSMON_PHASE_MASK )
218#define BUSPHASE_DATA_IN ( BUSMON_DATA_IN & BUSMON_PHASE_MASK )
219#define BUSPHASE_DATA_OUT ( BUSMON_DATA_OUT & BUSMON_PHASE_MASK )
220#define BUSPHASE_STATUS ( BUSMON_STATUS & BUSMON_PHASE_MASK )
221
222/*====================================================================*/
223
224typedef struct scsi_info_t {
Dominik Brodowskifd238232006-03-05 10:45:09 +0100225 struct pcmcia_device *p_dev;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700226 struct Scsi_Host *host;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700227 int stop;
228} scsi_info_t;
229
230
231/* synchronous transfer negotiation data */
232typedef struct _sync_data {
233 unsigned int SyncNegotiation;
234#define SYNC_NOT_YET 0
235#define SYNC_OK 1
236#define SYNC_NG 2
237
238 unsigned int SyncPeriod;
239 unsigned int SyncOffset;
240 unsigned char SyncRegister;
241 unsigned char AckWidth;
242} sync_data;
243
244typedef struct _nsp_hw_data {
245 unsigned int BaseAddress;
246 unsigned int NumAddress;
247 unsigned int IrqNumber;
248
249 unsigned long MmioAddress;
250#define NSP_MMIO_OFFSET 0x0800
251 unsigned long MmioLength;
252
253 unsigned char ScsiClockDiv;
254
255 unsigned char TransferMode;
256
257 int TimerCount;
258 int SelectionTimeOut;
Henrik Kretzschmar0fc82d52006-10-10 14:41:41 -0700259 struct scsi_cmnd *CurrentSC;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700260 //int CurrnetTarget;
261
262 int FifoCount;
263
264#define MSGBUF_SIZE 20
265 unsigned char MsgBuffer[MSGBUF_SIZE];
266 int MsgLen;
267
268#define N_TARGET 8
269 sync_data Sync[N_TARGET];
270
271 char nspinfo[110]; /* description */
272 spinlock_t Lock;
273
274 scsi_info_t *ScsiInfo; /* attach <-> detect glue */
275
276
277#ifdef NSP_DEBUG
278 int CmdId; /* Accepted command serial number.
279 Used for debugging. */
280#endif
281} nsp_hw_data;
282
Linus Torvalds1da177e2005-04-16 15:20:36 -0700283/****************************************************************************
284 *
285 */
286
287/* Card service functions */
Dominik Brodowskicc3b4862005-11-14 21:23:14 +0100288static void nsp_cs_detach (struct pcmcia_device *p_dev);
Dominik Brodowskifba395e2006-03-31 17:21:06 +0200289static void nsp_cs_release(struct pcmcia_device *link);
Dominik Brodowski15b99ac2006-03-31 17:26:06 +0200290static int nsp_cs_config (struct pcmcia_device *link);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700291
292/* Linux SCSI subsystem specific functions */
Christoph Hellwigd0be4a7d2005-10-31 18:31:40 +0100293static struct Scsi_Host *nsp_detect (struct scsi_host_template *sht);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700294static const char *nsp_info (struct Scsi_Host *shpnt);
295static int nsp_proc_info (
Linus Torvalds1da177e2005-04-16 15:20:36 -0700296 struct Scsi_Host *host,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700297 char *buffer,
298 char **start,
299 off_t offset,
300 int length,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700301 int inout);
Henrik Kretzschmar0fc82d52006-10-10 14:41:41 -0700302static int nsp_queuecommand(struct scsi_cmnd *SCpnt,
303 void (* done)(struct scsi_cmnd *SCpnt));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700304
305/* Error handler */
Henrik Kretzschmar0fc82d52006-10-10 14:41:41 -0700306/*static int nsp_eh_abort (struct scsi_cmnd *SCpnt);*/
307/*static int nsp_eh_device_reset(struct scsi_cmnd *SCpnt);*/
308static int nsp_eh_bus_reset (struct scsi_cmnd *SCpnt);
309static int nsp_eh_host_reset (struct scsi_cmnd *SCpnt);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700310static int nsp_bus_reset (nsp_hw_data *data);
311
312/* */
313static int nsphw_init (nsp_hw_data *data);
Henrik Kretzschmar0fc82d52006-10-10 14:41:41 -0700314static int nsphw_start_selection(struct scsi_cmnd *SCpnt);
315static void nsp_start_timer (struct scsi_cmnd *SCpnt, int time);
316static int nsp_fifo_count (struct scsi_cmnd *SCpnt);
317static void nsp_pio_read (struct scsi_cmnd *SCpnt);
318static void nsp_pio_write (struct scsi_cmnd *SCpnt);
319static int nsp_nexus (struct scsi_cmnd *SCpnt);
320static void nsp_scsi_done (struct scsi_cmnd *SCpnt);
321static int nsp_analyze_sdtr (struct scsi_cmnd *SCpnt);
322static int nsp_negate_signal (struct scsi_cmnd *SCpnt,
323 unsigned char mask, char *str);
324static int nsp_expect_signal (struct scsi_cmnd *SCpnt,
325 unsigned char current_phase,
326 unsigned char mask);
327static int nsp_xfer (struct scsi_cmnd *SCpnt, int phase);
328static int nsp_dataphase_bypass (struct scsi_cmnd *SCpnt);
329static int nsp_reselected (struct scsi_cmnd *SCpnt);
Christoph Hellwigd0be4a7d2005-10-31 18:31:40 +0100330static struct Scsi_Host *nsp_detect(struct scsi_host_template *sht);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700331
332/* Interrupt handler */
David Howells7d12e782006-10-05 14:55:46 +0100333//static irqreturn_t nspintr(int irq, void *dev_id);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700334
335/* Module entry point*/
336static int __init nsp_cs_init(void);
337static void __exit nsp_cs_exit(void);
338
Linus Torvalds1da177e2005-04-16 15:20:36 -0700339/* Debug */
340#ifdef NSP_DEBUG
Henrik Kretzschmar0fc82d52006-10-10 14:41:41 -0700341static void show_command (struct scsi_cmnd *SCpnt);
342static void show_phase (struct scsi_cmnd *SCpnt);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700343static void show_busphase(unsigned char stat);
344static void show_message (nsp_hw_data *data);
345#else
346# define show_command(ptr) /* */
347# define show_phase(SCpnt) /* */
348# define show_busphase(stat) /* */
349# define show_message(data) /* */
350#endif
351
352/*
353 * SCSI phase
354 */
355enum _scsi_phase {
356 PH_UNDETERMINED ,
357 PH_ARBSTART ,
358 PH_SELSTART ,
359 PH_SELECTED ,
360 PH_COMMAND ,
361 PH_DATA ,
362 PH_STATUS ,
363 PH_MSG_IN ,
364 PH_MSG_OUT ,
365 PH_DISCONNECT ,
366 PH_RESELECT ,
367 PH_ABORT ,
368 PH_RESET
369};
370
371enum _data_in_out {
372 IO_UNKNOWN,
373 IO_IN,
374 IO_OUT
375};
376
377enum _burst_mode {
378 BURST_IO8 = 0,
379 BURST_IO32 = 1,
380 BURST_MEM32 = 2,
381};
382
Linus Torvalds1da177e2005-04-16 15:20:36 -0700383/**************************************************************************
384 * SCSI messaage
385 */
386#define MSG_COMMAND_COMPLETE 0x00
387#define MSG_EXTENDED 0x01
388#define MSG_ABORT 0x06
389#define MSG_NO_OPERATION 0x08
390#define MSG_BUS_DEVICE_RESET 0x0c
391
392#define MSG_EXT_SDTR 0x01
393
Linus Torvalds1da177e2005-04-16 15:20:36 -0700394/* scatter-gather table */
Jens Axboe45711f12007-10-22 21:19:53 +0200395# define BUFFER_ADDR ((char *)((sg_virt(SCpnt->SCp.buffer))))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700396
397#endif /*__nsp_cs__*/
398/* end */