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1.1 root 1: /********************************************************
2: * Header file for eata_dma.c and eata_pio.c *
3: * Linux EATA SCSI drivers *
4: * (c) 1993,94,95 Michael Neuffer *
5: *********************************************************
6: * last change: 95/11/07 *
7: ********************************************************/
8:
9:
10: #ifndef _EATA_GENERIC_H
11: #define _EATA_GENERIC_H
12:
13:
14:
15: /*********************************************
16: * Misc. definitions *
17: *********************************************/
18:
19: #ifndef TRUE
20: #define TRUE 1
21: #endif
22: #ifndef FALSE
23: #define FALSE 0
24: #endif
25:
26: #define min(a,b) ((a<b)?(a):(b))
27:
28: #define R_LIMIT 0x20000
29:
30: #define MAXISA 4
31: #define MAXEISA 16
32: #define MAXPCI 16
33: #define MAXIRQ 16
34: #define MAXTARGET 16
35: #define MAXCHANNEL 3
36:
37: #define IS_ISA 'I'
38: #define IS_EISA 'E'
39: #define IS_PCI 'P'
40:
41: #define BROKEN_INQUIRY 1
42:
43: #define BUSMASTER 0xff
44: #define PIO 0xfe
45:
46: #define EATA_SIGNATURE 0x45415441 /* BIG ENDIAN coded "EATA" sig. */
47:
48: #define DPT_ID1 0x12
49: #define DPT_ID2 0x14
50:
51: #define ATT_ID1 0x06
52: #define ATT_ID2 0x94
53: #define ATT_ID3 0x0
54:
55: #define NEC_ID1 0x38
56: #define NEC_ID2 0xa3
57: #define NEC_ID3 0x82
58:
59:
60: #define EATA_CP_SIZE 44
61:
62: #define MAX_PCI_DEVICES 32 /* Maximum # Of Devices Per Bus */
63: #define MAX_METHOD_2 16 /* Max Devices For Method 2 */
64: #define MAX_PCI_BUS 16 /* Maximum # Of Busses Allowed */
65:
66: #define SG_SIZE 64
67: #define SG_SIZE_BIG 509 /* max. 509 elements, one 4k page */
68:
69: #define C_P_L_DIV 2 /* 1 <= C_P_L_DIV <= 8
70: * You can use this parameter to fine-tune
71: * the driver. Depending on the number of
72: * devices and their speed and ability to queue
73: * commands, you will get the best results with a
74: * value
75: * ~= numdevices-(devices_unable_to_queue_commands/2)
76: * The reason for this is that the disk driver
77: * tends to flood the queue, so that other
78: * drivers have problems to queue commands
79: * themselves. This can for example result in
80: * the effect that the tape stops during disk
81: * accesses.
82: */
83:
84: #define FREE 0
85: #define OK 0
86: #define NO_TIMEOUT 0
87: #define USED 1
88: #define TIMEOUT 2
89: #define RESET 4
90: #define LOCKED 8
91:
92: #define HD(cmd) ((hostdata *)&(cmd->host->hostdata))
93: #define CD(cmd) ((struct eata_ccb *)(cmd->host_scribble))
94: #define SD(host) ((hostdata *)&(host->hostdata))
95:
96: #define DELAY(x) { __u32 i; i = jiffies + (x * HZ); while (jiffies < i) barrier(); }
97: #define DEL2(x) { __u32 i; for (i = 0; i < 0xffff * x; i++); }
98:
99: /***********************************************
100: * EATA Command & Register definitions *
101: ***********************************************/
102: #define PCI_REG_DPTconfig 0x40
103: #define PCI_REG_PumpModeAddress 0x44
104: #define PCI_REG_PumpModeData 0x48
105: #define PCI_REG_ConfigParam1 0x50
106: #define PCI_REG_ConfigParam2 0x54
107:
108:
109: #define EATA_CMD_PIO_SETUPTEST 0xc6
110: #define EATA_CMD_PIO_READ_CONFIG 0xf0
111: #define EATA_CMD_PIO_SET_CONFIG 0xf1
112: #define EATA_CMD_PIO_SEND_CP 0xf2
113: #define EATA_CMD_PIO_RECEIVE_SP 0xf3
114: #define EATA_CMD_PIO_TRUNC 0xf4
115:
116: #define EATA_CMD_RESET 0xf9
117: #define EATA_CMD_IMMEDIATE 0xfa
118:
119: #define EATA_CMD_DMA_READ_CONFIG 0xfd
120: #define EATA_CMD_DMA_SET_CONFIG 0xfe
121: #define EATA_CMD_DMA_SEND_CP 0xff
122:
123: #define ECS_EMULATE_SENSE 0xd4
124:
125: #define EATA_GENERIC_ABORT 0x00
126: #define EATA_SPECIFIC_RESET 0x01
127: #define EATA_BUS_RESET 0x02
128: #define EATA_SPECIFIC_ABORT 0x03
129: #define EATA_QUIET_INTR 0x04
130: #define EATA_COLD_BOOT_HBA 0x06 /* Only as a last resort */
131: #define EATA_FORCE_IO 0x07
132:
133:
134: #define HA_WCOMMAND 0x07 /* command register offset */
135: #define HA_WCOMMAND2 0x06 /* immediate command offset */
136: #define HA_WSUBCODE 0x05
137: #define HA_WSUBLUN 0x04
138: #define HA_WDMAADDR 0x02 /* DMA address LSB offset */
139: #define HA_RAUXSTAT 0x08 /* aux status register offset*/
140: #define HA_RSTATUS 0x07 /* status register offset */
141: #define HA_RDATA 0x00 /* data register (16bit) */
142:
143: #define HA_ABUSY 0x01 /* aux busy bit */
144: #define HA_AIRQ 0x02 /* aux IRQ pending bit */
145: #define HA_SERROR 0x01 /* pr. command ended in error*/
146: #define HA_SMORE 0x02 /* more data soon to come */
147: #define HA_SCORR 0x04 /* data corrected */
148: #define HA_SDRQ 0x08 /* data request active */
149: #define HA_SSC 0x10 /* seek complete */
150: #define HA_SFAULT 0x20 /* write fault */
151: #define HA_SREADY 0x40 /* drive ready */
152: #define HA_SBUSY 0x80 /* drive busy */
153: #define HA_SDRDY HA_SSC+HA_SREADY+HA_SDRQ
154:
155: /**********************************************
156: * Message definitions *
157: **********************************************/
158:
159: #define HA_NO_ERROR 0x00 /* No Error */
160: #define HA_ERR_SEL_TO 0x01 /* Selection Timeout */
161: #define HA_ERR_CMD_TO 0x02 /* Command Timeout */
162: #define HA_ERR_RESET 0x03 /* SCSI Bus Reset Received */
163: #define HA_INIT_POWERUP 0x04 /* Initial Controller Power-up */
164: #define HA_UNX_BUSPHASE 0x05 /* Unexpected Bus Phase */
165: #define HA_UNX_BUS_FREE 0x06 /* Unexpected Bus Free */
166: #define HA_BUS_PARITY 0x07 /* Bus Parity Error */
167: #define HA_SCSI_HUNG 0x08 /* SCSI Hung */
168: #define HA_UNX_MSGRJCT 0x09 /* Unexpected Message Rejected */
169: #define HA_RESET_STUCK 0x0a /* SCSI Bus Reset Stuck */
170: #define HA_RSENSE_FAIL 0x0b /* Auto Request-Sense Failed */
171: #define HA_PARITY_ERR 0x0c /* Controller Ram Parity Error */
172: #define HA_CP_ABORT_NA 0x0d /* Abort Message sent to non-active cmd */
173: #define HA_CP_ABORTED 0x0e /* Abort Message sent to active cmd */
174: #define HA_CP_RESET_NA 0x0f /* Reset Message sent to non-active cmd */
175: #define HA_CP_RESET 0x10 /* Reset Message sent to active cmd */
176: #define HA_ECC_ERR 0x11 /* Controller Ram ECC Error */
177: #define HA_PCI_PARITY 0x12 /* PCI Parity Error */
178: #define HA_PCI_MABORT 0x13 /* PCI Master Abort */
179: #define HA_PCI_TABORT 0x14 /* PCI Target Abort */
180: #define HA_PCI_STABORT 0x15 /* PCI Signaled Target Abort */
181:
182: /**********************************************
183: * Other definitions *
184: **********************************************/
185:
186: struct reg_bit { /* reading this one will clear the interrupt */
187: __u8 error:1; /* previous command ended in an error */
188: __u8 more:1; /* more DATA coming soon, poll BSY & DRQ (PIO) */
189: __u8 corr:1; /* data read was successfully corrected with ECC*/
190: __u8 drq:1; /* data request active */
191: __u8 sc:1; /* seek complete */
192: __u8 fault:1; /* write fault */
193: __u8 ready:1; /* drive ready */
194: __u8 busy:1; /* controller busy */
195: };
196:
197: struct reg_abit { /* reading this won't clear the interrupt */
198: __u8 abusy:1; /* auxiliary busy */
199: __u8 irq:1; /* set when drive interrupt is asserted */
200: __u8 dummy:6;
201: };
202:
203: struct eata_register { /* EATA register set */
204: __u8 data_reg[2]; /* R, couldn't figure this one out */
205: __u8 cp_addr[4]; /* W, CP address register */
206: union {
207: __u8 command; /* W, command code: [read|set] conf, send CP*/
208: struct reg_bit status; /* R, see register_bit1 */
209: __u8 statusbyte;
210: } ovr;
211: struct reg_abit aux_stat; /* R, see register_bit2 */
212: };
213:
214: struct get_conf { /* Read Configuration Array */
215: __u32 len; /* Should return 0x22, 0x24, etc */
216: __u32 signature; /* Signature MUST be "EATA" */
217: __u8 version2:4,
218: version:4; /* EATA Version level */
219: __u8 OCS_enabled:1, /* Overlap Command Support enabled */
220: TAR_support:1, /* SCSI Target Mode supported */
221: TRNXFR:1, /* Truncate Transfer Cmd not necessary *
222: * Only used in PIO Mode */
223: MORE_support:1, /* MORE supported (only PIO Mode) */
224: DMA_support:1, /* DMA supported Driver uses only *
225: * this mode */
226: DMA_valid:1, /* DRQ value in Byte 30 is valid */
227: ATA:1, /* ATA device connected (not supported) */
228: HAA_valid:1; /* Hostadapter Address is valid */
229:
230: __u16 cppadlen; /* Number of pad bytes send after CD data *
231: * set to zero for DMA commands */
232: __u8 scsi_id[4]; /* SCSI ID of controller 2-0 Byte 0 res. *
233: * if not, zero is returned */
234: __u32 cplen; /* CP length: number of valid cp bytes */
235: __u32 splen; /* Number of bytes returned after *
236: * Receive SP command */
237: __u16 queuesiz; /* max number of queueable CPs */
238: __u16 dummy;
239: __u16 SGsiz; /* max number of SG table entries */
240: __u8 IRQ:4, /* IRQ used this HA */
241: IRQ_TR:1, /* IRQ Trigger: 0=edge, 1=level */
242: SECOND:1, /* This is a secondary controller */
243: DMA_channel:2; /* DRQ index, DRQ is 2comp of DRQX */
244: __u8 sync; /* device at ID 7 tru 0 is running in *
245: * synchronous mode, this will disappear */
246: __u8 DSBLE:1, /* ISA i/o addressing is disabled */
247: FORCADR:1, /* i/o address has been forced */
248: SG_64K:1,
249: SG_UAE:1,
250: :4;
251: __u8 MAX_ID:5, /* Max number of SCSI target IDs */
252: MAX_CHAN:3; /* Number of SCSI busses on HBA */
253: __u8 MAX_LUN; /* Max number of LUNs */
254: __u8 :3,
255: AUTOTRM:1,
256: M1_inst:1,
257: ID_qest:1, /* Raidnum ID is questionable */
258: is_PCI:1, /* HBA is PCI */
259: is_EISA:1; /* HBA is EISA */
260: __u8 unused[478];
261: };
262:
263: struct eata_sg_list
264: {
265: __u32 data;
266: __u32 len;
267: };
268:
269: struct eata_ccb { /* Send Command Packet structure */
270:
271: __u8 SCSI_Reset:1, /* Cause a SCSI Bus reset on the cmd */
272: HBA_Init:1, /* Cause Controller to reinitialize */
273: Auto_Req_Sen:1, /* Do Auto Request Sense on errors */
274: scatter:1, /* Data Ptr points to a SG Packet */
275: Resrvd:1, /* RFU */
276: Interpret:1, /* Interpret the SCSI cdb of own use */
277: DataOut:1, /* Data Out phase with command */
278: DataIn:1; /* Data In phase with command */
279: __u8 reqlen; /* Request Sense Length *
280: * Valid if Auto_Req_Sen=1 */
281: __u8 unused[3];
282: __u8 FWNEST:1, /* send cmd to phys RAID component */
283: unused2:7;
284: __u8 Phsunit:1, /* physical unit on mirrored pair */
285: I_AT:1, /* inhibit address translation */
286: I_HBA_C:1, /* HBA inhibit caching */
287: unused3:5;
288:
289: __u8 cp_id:5, /* SCSI Device ID of target */
290: cp_channel:3; /* SCSI Channel # of HBA */
291: __u8 cp_lun:3,
292: :2,
293: cp_luntar:1, /* CP is for target ROUTINE */
294: cp_dispri:1, /* Grant disconnect privilege */
295: cp_identify:1; /* Always TRUE */
296: __u8 cp_msg1; /* Message bytes 0-3 */
297: __u8 cp_msg2;
298: __u8 cp_msg3;
299: __u8 cp_cdb[12]; /* Command Descriptor Block */
300: __u32 cp_datalen; /* Data Transfer Length *
301: * If scatter=1 len of sg package */
302: void *cp_viraddr; /* address of this ccb */
303: __u32 cp_dataDMA; /* Data Address, if scatter=1 *
304: * address of scatter packet */
305: __u32 cp_statDMA; /* address for Status Packet */
306: __u32 cp_reqDMA; /* Request Sense Address, used if *
307: * CP command ends with error */
308: /* Additional CP info begins here */
309: __u32 timestamp; /* Needed to measure command latency */
310: __u32 timeout;
311: __u8 sizeindex;
312: __u8 rw_latency;
313: __u8 retries;
314: __u8 status; /* status of this queueslot */
315: Scsi_Cmnd *cmd; /* address of cmd */
316: struct eata_sg_list *sg_list;
317: };
318:
319:
320: struct eata_sp {
321: __u8 hba_stat:7, /* HBA status */
322: EOC:1; /* True if command finished */
323: __u8 scsi_stat; /* Target SCSI status */
324: __u8 reserved[2];
325: __u32 residue_len; /* Number of bytes not transferred */
326: struct eata_ccb *ccb; /* Address set in COMMAND PACKET */
327: __u8 msg[12];
328: };
329:
330: typedef struct hstd {
331: __u8 vendor[9];
332: __u8 name[18];
333: __u8 revision[6];
334: __u8 EATA_revision;
335: __u8 bustype; /* bustype of HBA */
336: __u8 channel; /* # of avail. scsi channels */
337: __u8 state; /* state of HBA */
338: __u8 primary; /* true if primary */
339: __u8 broken_INQUIRY:1; /* This is an EISA HBA with *
340: * broken INQUIRY */
341: __u8 do_latency; /* Latency measurement flag */
342: __u32 reads[13];
343: __u32 writes[13];
344: __u32 reads_lat[12][4];
345: __u32 writes_lat[12][4];
346: /* state of Target (RESET,..) */
347: __u8 t_state[MAXCHANNEL][MAXTARGET];
348: /* timeouts on target */
349: __u32 t_timeout[MAXCHANNEL][MAXTARGET];
350: __u32 last_ccb; /* Last used ccb */
351: __u32 cplen; /* size of CP in words */
352: __u16 cppadlen; /* pad length of cp in words */
353: __u8 hostid; /* SCSI ID of HBA */
354: __u8 devflags; /* bits set for detected devices */
355: __u8 moresupport; /* HBA supports MORE flag */
356: struct Scsi_Host *next;
357: struct Scsi_Host *prev;
358: struct eata_sp sp; /* status packet */
359: struct eata_ccb ccb[0]; /* ccb array begins here */
360: }hostdata;
361:
362: /* structure for max. 2 emulated drives */
363: struct drive_geom_emul {
364: __u8 trans; /* translation flag 1=transl */
365: __u8 channel; /* SCSI channel number */
366: __u8 HBA; /* HBA number (prim/sec) */
367: __u8 id; /* drive id */
368: __u8 lun; /* drive lun */
369: __u32 heads; /* number of heads */
370: __u32 sectors; /* number of sectors */
371: __u32 cylinder; /* number of cylinders */
372: };
373:
374: struct geom_emul {
375: __u8 bios_drives; /* number of emulated drives */
376: struct drive_geom_emul drv[2]; /* drive structures */
377: };
378:
379: #endif /* _EATA_GENERIC_H */
380:
381: /*
382: * Overrides for Emacs so that we almost follow Linus's tabbing style.
383: * Emacs will notice this stuff at the end of the file and automatically
384: * adjust the settings for this buffer only. This must remain at the end
385: * of the file.
386: * ---------------------------------------------------------------------------
387: * Local variables:
388: * c-indent-level: 4
389: * c-brace-imaginary-offset: 0
390: * c-brace-offset: -4
391: * c-argdecl-indent: 4
392: * c-label-offset: -4
393: * c-continued-statement-offset: 4
394: * c-continued-brace-offset: 0
395: * tab-width: 8
396: * End:
397: */
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