xref: /netbsd/sys/dev/pci/arcmsrvar.h (revision 6550d01e)
1 /*	$NetBSD: arcmsrvar.h,v 1.13 2008/09/23 22:22:41 christos Exp $ */
2 /*	Derived from $OpenBSD: arc.c,v 1.68 2007/10/27 03:28:27 dlg Exp $ */
3 
4 /*
5  * Copyright (c) 2007 Juan Romero Pardines <xtraeme@netbsd.org>
6  * Copyright (c) 2006 David Gwynne <dlg@openbsd.org>
7  *
8  * Permission to use, copy, modify, and distribute this software for any
9  * purpose with or without fee is hereby granted, provided that the above
10  * copyright notice and this permission notice appear in all copies.
11  *
12  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
13  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
14  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
15  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
16  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
17  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
18  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
19  */
20 
21 #ifndef _PCI_ARCMSRVAR_H_
22 #define _PCI_ARCMSRVAR_H_
23 
24 #define ARC_PCI_BAR			PCI_MAPREG_START
25 
26 #define ARC_REG_INB_MSG0		0x0010
27 #define  ARC_REG_INB_MSG0_NOP			(0x00000000)
28 #define  ARC_REG_INB_MSG0_GET_CONFIG		(0x00000001)
29 #define  ARC_REG_INB_MSG0_SET_CONFIG		(0x00000002)
30 #define  ARC_REG_INB_MSG0_ABORT_CMD		(0x00000003)
31 #define  ARC_REG_INB_MSG0_STOP_BGRB		(0x00000004)
32 #define  ARC_REG_INB_MSG0_FLUSH_CACHE		(0x00000005)
33 #define  ARC_REG_INB_MSG0_START_BGRB		(0x00000006)
34 #define  ARC_REG_INB_MSG0_CHK331PENDING		(0x00000007)
35 #define  ARC_REG_INB_MSG0_SYNC_TIMER		(0x00000008)
36 #define ARC_REG_INB_MSG1		0x0014
37 #define ARC_REG_OUTB_ADDR0		0x0018
38 #define ARC_REG_OUTB_ADDR1		0x001c
39 #define  ARC_REG_OUTB_ADDR1_FIRMWARE_OK		(1<<31)
40 #define ARC_REG_INB_DOORBELL		0x0020
41 #define  ARC_REG_INB_DOORBELL_WRITE_OK		(1<<0)
42 #define  ARC_REG_INB_DOORBELL_READ_OK		(1<<1)
43 #define ARC_REG_OUTB_DOORBELL		0x002c
44 #define  ARC_REG_OUTB_DOORBELL_WRITE_OK		(1<<0)
45 #define  ARC_REG_OUTB_DOORBELL_READ_OK		(1<<1)
46 #define ARC_REG_INTRSTAT		0x0030
47 #define  ARC_REG_INTRSTAT_MSG0			(1<<0)
48 #define  ARC_REG_INTRSTAT_MSG1			(1<<1)
49 #define  ARC_REG_INTRSTAT_DOORBELL		(1<<2)
50 #define  ARC_REG_INTRSTAT_POSTQUEUE		(1<<3)
51 #define  ARC_REG_INTRSTAT_PCI			(1<<4)
52 #define ARC_REG_INTRMASK		0x0034
53 #define  ARC_REG_INTRMASK_MSG0			(1<<0)
54 #define  ARC_REG_INTRMASK_MSG1			(1<<1)
55 #define  ARC_REG_INTRMASK_DOORBELL		(1<<2)
56 #define  ARC_REG_INTRMASK_POSTQUEUE		(1<<3)
57 #define  ARC_REG_INTRMASK_PCI			(1<<4)
58 #define ARC_REG_POST_QUEUE		0x0040
59 #define  ARC_REG_POST_QUEUE_ADDR_SHIFT		5
60 #define  ARC_REG_POST_QUEUE_IAMBIOS		(1<<30)
61 #define  ARC_REG_POST_QUEUE_BIGFRAME		(1<<31)
62 #define ARC_REG_REPLY_QUEUE		0x0044
63 #define  ARC_REG_REPLY_QUEUE_ADDR_SHIFT		5
64 #define  ARC_REG_REPLY_QUEUE_ERR		(1<<28)
65 #define  ARC_REG_REPLY_QUEUE_IAMBIOS		(1<<30)
66 #define ARC_REG_MSGBUF			0x0a00
67 #define  ARC_REG_MSGBUF_LEN		1024
68 #define ARC_REG_IOC_WBUF_LEN		0x0e00
69 #define ARC_REG_IOC_WBUF		0x0e04
70 #define ARC_REG_IOC_RBUF_LEN		0x0f00
71 #define ARC_REG_IOC_RBUF		0x0f04
72 #define  ARC_REG_IOC_RWBUF_MAXLEN	124 /* for both RBUF and WBUF */
73 
74 struct arc_msg_firmware_info {
75 	uint32_t	signature;
76 #define ARC_FWINFO_SIGNATURE_GET_CONFIG		(0x87974060)
77 	uint32_t	request_len;
78 	uint32_t	queue_len;
79 	uint32_t	sdram_size;
80 	uint32_t	sata_ports;
81 	uint8_t		vendor[40];
82 	uint8_t		model[8];
83 	uint8_t		fw_version[16];
84 	uint8_t		device_map[16];
85 } __packed;
86 
87 struct arc_msg_scsicmd {
88 	uint8_t		bus;
89 	uint8_t		target;
90 	uint8_t		lun;
91 	uint8_t		function;
92 
93 	uint8_t		cdb_len;
94 	uint8_t		sgl_len;
95 	uint8_t		flags;
96 #define ARC_MSG_SCSICMD_FLAG_SGL_BSIZE_512	(1<<0)
97 #define ARC_MSG_SCSICMD_FLAG_FROM_BIOS		(1<<1)
98 #define ARC_MSG_SCSICMD_FLAG_WRITE		(1<<2)
99 #define ARC_MSG_SCSICMD_FLAG_SIMPLEQ		(0x00)
100 #define ARC_MSG_SCSICMD_FLAG_HEADQ		(0x08)
101 #define ARC_MSG_SCSICMD_FLAG_ORDERQ		(0x10)
102 	uint8_t		reserved;
103 
104 	uint32_t	context;
105 	uint32_t	data_len;
106 
107 #define ARC_MSG_CDBLEN				16
108 	uint8_t		cdb[ARC_MSG_CDBLEN];
109 
110 	uint8_t		status;
111 #define ARC_MSG_STATUS_SELTIMEOUT		0xf0
112 #define ARC_MSG_STATUS_ABORTED			0xf1
113 #define ARC_MSG_STATUS_INIT_FAIL		0xf2
114 #define ARC_MSG_SENSELEN			15
115 	uint8_t		sense_data[ARC_MSG_SENSELEN];
116 
117 	/* followed by an sgl */
118 } __packed;
119 
120 struct arc_sge {
121 	uint32_t	sg_hdr;
122 #define ARC_SGE_64BIT				(1<<24)
123 	uint32_t	sg_lo_addr;
124 	uint32_t	sg_hi_addr;
125 } __packed;
126 
127 #define ARC_MAX_TARGET		16
128 #define ARC_MAX_LUN		8
129 #define ARC_MAX_IOCMDLEN	512
130 #define ARC_BLOCKSIZE		512
131 
132 /*
133  * the firmware deals with up to 256 or 512 byte command frames.
134  */
135 
136 /*
137  * sizeof(struct arc_msg_scsicmd) + (sizeof(struct arc_sge) * 38) == 508.
138  */
139 #define ARC_SGL_MAXLEN		38
140 /*
141  * sizeof(struct arc_msg_scsicmd) + (sizeof(struct arc_sge) * 17) == 252.
142  */
143 #define ARC_SGL_256LEN		17
144 
145 struct arc_io_cmd {
146 	struct arc_msg_scsicmd	cmd;
147 	struct arc_sge		sgl[ARC_SGL_MAXLEN];
148 } __packed;
149 
150 /*
151  * definitions of the firmware commands sent via the doorbells.
152  */
153 struct arc_fw_hdr {
154 	uint8_t		byte1;
155 	uint8_t		byte2;
156 	uint8_t		byte3;
157 } __packed;
158 
159 struct arc_fw_bufhdr {
160 	struct arc_fw_hdr	hdr;
161 	uint16_t		len;
162 } __packed;
163 
164 /* Firmware command codes */
165 #define ARC_FW_CHECK_PASS	0x14	/* opcode + 1 byte length + password */
166 #define ARC_FW_GETEVENTS	0x1a	/* opcode + 1 byte for page 0/1/2/3 */
167 #define ARC_FW_GETHWMON		0x1b	/* opcode + arc_fw_hwmon */
168 #define ARC_FW_RAIDINFO		0x20	/* opcode + raid# */
169 #define ARC_FW_VOLINFO		0x21	/* opcode + vol# */
170 #define ARC_FW_DISKINFO		0x22	/* opcode + physdisk# */
171 #define ARC_FW_SYSINFO		0x23	/* opcode. reply is fw_sysinfo */
172 #define ARC_FW_CLEAREVENTS	0x24	/* opcode only */
173 #define ARC_FW_MUTE_ALARM	0x30	/* opcode only */
174 #define ARC_FW_SET_ALARM	0x31	/* opcode + 1 byte for setting */
175 #define  ARC_FW_SET_ALARM_DISABLE		0x00
176 #define  ARC_FW_SET_ALARM_ENABLE		0x01
177 #define ARC_FW_SET_PASS		0x32	/* opcode + 1 byte length + password */
178 #define ARC_FW_REBUILD_PRIO	0x34	/* Rebuild priority for disks */
179 #define  ARC_FW_REBUILD_PRIO_ULTRALOW		(1<<0)
180 #define  ARC_FW_REBUILD_PRIO_LOW		(1<<1)
181 #define  ARC_FW_REBUILD_PRIO_NORMAL		(1<<2)
182 #define  ARC_FW_REBUILD_PRIO_HIGH		(1<<3)
183 #define ARC_FW_SET_MAXATA_MODE	0x35	/* opcode + 1 byte mode */
184 #define  ARC_FW_SET_MAXATA_MODE_133		(1<<0)
185 #define  ARC_FW_SET_MAXATA_MODE_100		(1<<1)
186 #define  ARC_FW_SET_MAXATA_MODE_66		(1<<2)
187 #define  ARC_FW_SET_MAXATA_MODE_33		(1<<3)
188 #define ARC_FW_NOP		0x38	/* opcode only */
189 /*
190  * Structure for ARC_FW_CREATE_PASSTHRU:
191  *
192  * byte 2	command code 0x40
193  * byte 3	device #
194  * byte 4	scsi channel (0/1)
195  * byte 5	scsi id (0/15)
196  * byte 6	scsi lun (0/7)
197  * byte 7	tagged queue (1 enabled)
198  * byte 8	cache mode (1 enabled)
199  * byte 9	max speed ((0/1/2/3/4 -> 33/66/100/133/150)
200  */
201 #define ARC_FW_CREATE_PASSTHRU	0x40
202 #define ARC_FW_DELETE_PASSTHRU	0x42	/* opcode + device# */
203 
204 /*
205  * Structure for ARC_FW_CREATE_RAIDSET:
206  *
207  * byte 2	command code 0x50
208  * byte 3-6	device mask
209  * byte 7-22	raidset name (byte 7 == 0 use default)
210  */
211 #define ARC_FW_CREATE_RAIDSET	0x50
212 #define ARC_FW_DELETE_RAIDSET	0x51	/* opcode + raidset# */
213 #define ARC_FW_CREATE_HOTSPARE	0x54	/* opcode + 4 bytes device mask */
214 #define ARC_FW_DELETE_HOTSPARE	0x55	/* opcode + 4 bytes device mask */
215 
216 /*
217  * Structure for ARC_FW_CREATE_VOLUME/ARC_FW_MODIFY_VOLUME:
218  *
219  * byte 2 	command code 0x60
220  * byte 3 	raidset#
221  * byte 4-19 	volume set name (byte 4 == 0 use default)
222  * byte 20-27	volume capacity in blocks
223  * byte 28	raid level
224  * byte 29	stripe size
225  * byte 30	channel
226  * byte 31	ID
227  * byte 32	LUN
228  * byte 33	1 enable tag queuing
229  * byte 33	1 enable cache
230  * byte 35	speed 0/1/2/3/4 -> 33/66/100/133/150
231  * byte 36	1 for quick init (only for CREATE_VOLUME)
232  */
233 #define ARC_FW_CREATE_VOLUME	0x60
234 #define ARC_FW_MODIFY_VOLUME 	0x61
235 #define ARC_FW_DELETE_VOLUME	0x62	/* opcode + vol# */
236 #define ARC_FW_START_CHECKVOL	0x63	/* opcode + vol# */
237 #define ARC_FW_STOP_CHECKVOL	0x64	/* opcode only */
238 
239 /* Status codes for the firmware command codes */
240 #define ARC_FW_CMD_OK		0x41
241 #define ARC_FW_CMD_RAIDINVAL	0x42
242 #define ARC_FW_CMD_VOLINVAL	0x43
243 #define ARC_FW_CMD_NORAID	0x44
244 #define ARC_FW_CMD_NOVOLUME	0x45
245 #define ARC_FW_CMD_NOPHYSDRV	0x46
246 #define ARC_FW_CMD_PARAM_ERR	0x47
247 #define ARC_FW_CMD_UNSUPPORTED	0x48
248 #define ARC_FW_CMD_DISKCFG_CHGD	0x49
249 #define ARC_FW_CMD_PASS_INVAL	0x4a
250 #define ARC_FW_CMD_NODISKSPACE	0x4b
251 #define ARC_FW_CMD_CHECKSUM_ERR	0x4c
252 #define ARC_FW_CMD_PASS_REQD	0x4d
253 
254 struct arc_fw_hwmon {
255 	uint8_t 	nfans;
256 	uint8_t 	nvoltages;
257 	uint8_t 	ntemps;
258 	uint8_t 	npower;
259 	uint16_t 	fan0;		/* RPM */
260 	uint16_t 	fan1;		/* RPM */
261 	uint16_t 	voltage_orig0;	/* original value * 1000 */
262 	uint16_t 	voltage_val0;	/* value */
263 	uint16_t 	voltage_orig1;	/* original value * 1000 */
264 	uint16_t 	voltage_val1;	/* value */
265 	uint16_t 	voltage_orig2;
266 	uint16_t 	voltage_val2;
267 	uint8_t 	temp0;
268 	uint8_t 	temp1;
269 	uint8_t 	pwr_indicator;	/* (bit0 : power#0, bit1 : power#1) */
270 	uint8_t 	ups_indicator;
271 } __packed;
272 
273 struct arc_fw_comminfo {
274 	uint8_t		baud_rate;
275 	uint8_t		data_bits;
276 	uint8_t		stop_bits;
277 	uint8_t		parity;
278 	uint8_t		flow_control;
279 } __packed;
280 
281 struct arc_fw_scsiattr {
282 	uint8_t		channel;	/* channel for SCSI target (0/1) */
283 	uint8_t		target;
284 	uint8_t		lun;
285 	uint8_t		tagged;
286 	uint8_t		cache;
287 	uint8_t		speed;
288 } __packed;
289 
290 struct arc_fw_raidinfo {
291 	uint8_t		set_name[16];
292 	uint32_t	capacity;
293 	uint32_t	capacity2;
294 	uint32_t	fail_mask;
295 	uint8_t		device_array[32];
296 	uint8_t		member_devices;
297 	uint8_t		new_member_devices;
298 	uint8_t		raid_state;
299 	uint8_t		volumes;
300 	uint8_t		volume_list[16];
301 	uint8_t		reserved1[3];
302 	uint8_t		free_segments;
303 	uint32_t	raw_stripes[8];
304 	uint8_t		reserved2[12];
305 } __packed;
306 
307 struct arc_fw_volinfo {
308 	uint8_t		set_name[16];
309 	uint32_t	capacity;
310 	uint32_t	capacity2;
311 	uint32_t	fail_mask;
312 	uint32_t	stripe_size;	/* in blocks */
313 	uint32_t	new_fail_mask;
314 	uint32_t	new_stripe_size;
315 	uint32_t	volume_status;
316 #define ARC_FW_VOL_STATUS_NORMAL	0x00
317 #define ARC_FW_VOL_STATUS_INITTING	(1<<0)
318 #define ARC_FW_VOL_STATUS_FAILED	(1<<1)
319 #define ARC_FW_VOL_STATUS_MIGRATING	(1<<2)
320 #define ARC_FW_VOL_STATUS_REBUILDING	(1<<3)
321 #define ARC_FW_VOL_STATUS_NEED_INIT	(1<<4)
322 #define ARC_FW_VOL_STATUS_NEED_MIGRATE	(1<<5)
323 #define ARC_FW_VOL_STATUS_INIT_FLAG	(1<<6)
324 #define ARC_FW_VOL_STATUS_NEED_REGEN	(1<<7)
325 #define ARC_FW_VOL_STATUS_CHECKING	(1<<8)
326 #define ARC_FW_VOL_STATUS_NEED_CHECK	(1<<9)
327 	uint32_t	progress;
328 	struct arc_fw_scsiattr	scsi_attr;
329 	uint8_t		member_disks;
330 	uint8_t		raid_level;
331 #define ARC_FW_VOL_RAIDLEVEL_0		0x00
332 #define ARC_FW_VOL_RAIDLEVEL_1		0x01
333 #define ARC_FW_VOL_RAIDLEVEL_3		0x02
334 #define ARC_FW_VOL_RAIDLEVEL_5		0x03
335 #define ARC_FW_VOL_RAIDLEVEL_6		0x04
336 #define ARC_FW_VOL_RAIDLEVEL_PASSTHRU	0x05
337 	uint8_t		new_member_disks;
338 	uint8_t		new_raid_level;
339 	uint8_t		raid_set_number;
340 	uint8_t		reserved[5];
341 } __packed;
342 
343 struct arc_fw_diskinfo {
344 	uint8_t		model[40];
345 	uint8_t		serial[20];
346 	uint8_t		firmware_rev[8];
347 	uint32_t	capacity;
348 	uint32_t	capacity2;
349 	uint8_t		device_state;
350 #define ARC_FW_DISK_NORMAL	0x88	/* disk attached/initialized */
351 #define ARC_FW_DISK_PASSTHRU	0x8a	/* pass through disk in normal state */
352 #define ARC_FW_DISK_HOTSPARE	0xa8	/* hotspare disk in normal state */
353 #define ARC_FW_DISK_UNUSED	0xc8	/* free/unused disk in normal state */
354 #define ARC_FW_DISK_FAILED	0x10	/* disk in failed state */
355 	uint8_t		pio_mode;
356 	uint8_t		current_udma_mode;
357 	uint8_t		udma_mode;
358 	uint8_t		drive_select;
359 	uint8_t		raid_number;	/* 0xff unowned */
360 	struct arc_fw_scsiattr	scsi_attr;
361 	uint8_t		reserved[40];
362 } __packed;
363 
364 struct arc_fw_sysinfo {
365 	uint8_t		vendor_name[40];
366 	uint8_t		serial_number[16];
367 	uint8_t		firmware_version[16];
368 	uint8_t		boot_version[16];
369 	uint8_t		mb_version[16];
370 	uint8_t		model_name[8];
371 
372 	uint8_t		local_ip[4];
373 	uint8_t		current_ip[4];
374 
375 	uint32_t	time_tick;
376 	uint32_t	cpu_speed;
377 	uint32_t	icache;
378 	uint32_t	dcache;
379 	uint32_t	scache;
380 	uint32_t	memory_size;
381 	uint32_t	memory_speed;
382 	uint32_t	events;
383 
384 	uint8_t		gsiMacAddress[6];
385 	uint8_t		gsiDhcp;
386 
387 	uint8_t		alarm;
388 	uint8_t		channel_usage;
389 	uint8_t		max_ata_mode;
390 	uint8_t		sdram_ecc;
391 	uint8_t		rebuild_priority;
392 	struct arc_fw_comminfo	comm_a;
393 	struct arc_fw_comminfo	comm_b;
394 	uint8_t		ide_channels;
395 	uint8_t		scsi_host_channels;
396 	uint8_t		ide_host_channels;
397 	uint8_t		max_volume_set;
398 	uint8_t		max_raid_set;
399 	uint8_t		ether_port;
400 	uint8_t		raid6_engine;
401 	uint8_t		reserved[75];
402 } __packed;
403 
404 /*
405  * autconf(9) glue.
406  */
407 struct arc_ccb;
408 TAILQ_HEAD(arc_ccb_list, arc_ccb);
409 
410 struct arc_softc {
411 	struct scsipi_channel	sc_chan;
412 	struct scsipi_adapter	sc_adapter;
413 
414 	pci_chipset_tag_t	sc_pc;
415 	pcitag_t		sc_tag;
416 
417 	bus_space_tag_t		sc_iot;
418 	bus_space_handle_t	sc_ioh;
419 	bus_size_t		sc_ios;
420 	bus_dma_tag_t		sc_dmat;
421 
422 	void			*sc_ih;
423 
424 	int			sc_req_count;
425 
426 	struct arc_dmamem	*sc_requests;
427 	struct arc_ccb		*sc_ccbs;
428 	struct arc_ccb_list	sc_ccb_free;
429 
430 	struct lwp		*sc_lwp;
431 	volatile int		sc_talking;
432 	kmutex_t		sc_mutex;
433 	kcondvar_t		sc_condvar;
434 	krwlock_t		sc_rwlock;
435 
436 	struct sysmon_envsys	*sc_sme;
437 	envsys_data_t		*sc_sensors;
438 	int			sc_nsensors;
439 
440 	size_t			sc_maxraidset;	/* max raid sets */
441 	size_t 			sc_maxvolset;	/* max volume sets */
442 	size_t 			sc_cchans;	/* connected channels */
443 
444 	device_t		sc_dev;		/* self */
445 	device_t		sc_scsibus_dv;
446 };
447 
448 /*
449  * interface for scsi midlayer to talk to.
450  */
451 void 	arc_scsi_cmd(struct scsipi_channel *, scsipi_adapter_req_t, void *);
452 
453 /*
454  * code to deal with getting bits in and out of the bus space.
455  */
456 uint32_t arc_read(struct arc_softc *, bus_size_t);
457 void 	arc_read_region(struct arc_softc *, bus_size_t, void *,
458 			size_t);
459 void 	arc_write(struct arc_softc *, bus_size_t, uint32_t);
460 void 	arc_write_region(struct arc_softc *, bus_size_t, void *,
461 			 size_t);
462 int 	arc_wait_eq(struct arc_softc *, bus_size_t, uint32_t,
463 		    uint32_t);
464 int 	arc_wait_ne(struct arc_softc *, bus_size_t, uint32_t,
465 		    uint32_t);
466 int	arc_msg0(struct arc_softc *, uint32_t);
467 
468 #define arc_push(_s, _r)	arc_write((_s), ARC_REG_POST_QUEUE, (_r))
469 #define arc_pop(_s)		arc_read((_s), ARC_REG_REPLY_QUEUE)
470 
471 /*
472  * wrap up the bus_dma api.
473  */
474 struct arc_dmamem {
475 	bus_dmamap_t		adm_map;
476 	bus_dma_segment_t	adm_seg;
477 	size_t			adm_size;
478 	void			*adm_kva;
479 };
480 #define ARC_DMA_MAP(_adm)	((_adm)->adm_map)
481 #define ARC_DMA_DVA(_adm)	((_adm)->adm_map->dm_segs[0].ds_addr)
482 #define ARC_DMA_KVA(_adm)	((void *)(_adm)->adm_kva)
483 
484 struct arc_dmamem 	*arc_dmamem_alloc(struct arc_softc *, size_t);
485 void 			arc_dmamem_free(struct arc_softc *,
486 					struct arc_dmamem *);
487 
488 /*
489  * stuff to manage a scsi command.
490  */
491 struct arc_ccb {
492 	struct arc_softc	*ccb_sc;
493 	int			ccb_id;
494 
495 	struct scsipi_xfer	*ccb_xs;
496 
497 	bus_dmamap_t		ccb_dmamap;
498 	bus_addr_t		ccb_offset;
499 	struct arc_io_cmd	*ccb_cmd;
500 	uint32_t		ccb_cmd_post;
501 
502 	TAILQ_ENTRY(arc_ccb)	ccb_link;
503 };
504 
505 int 	arc_alloc_ccbs(device_t);
506 struct arc_ccb	*arc_get_ccb(struct arc_softc *);
507 void 	arc_put_ccb(struct arc_softc *, struct arc_ccb *);
508 int 	arc_load_xs(struct arc_ccb *);
509 int 	arc_complete(struct arc_softc *, struct arc_ccb *, int);
510 void 	arc_scsi_cmd_done(struct arc_softc *, struct arc_ccb *,
511 			  uint32_t);
512 
513 /*
514  * real stuff for dealing with the hardware.
515  */
516 int 	arc_map_pci_resources(device_t, struct pci_attach_args *);
517 void 	arc_unmap_pci_resources(struct arc_softc *);
518 int 	arc_query_firmware(device_t);
519 
520 /*
521  * stuff to do messaging via the doorbells.
522  */
523 void 	arc_lock(struct arc_softc *);
524 void 	arc_unlock(struct arc_softc *);
525 void 	arc_wait(struct arc_softc *);
526 uint8_t 	arc_msg_cksum(void *, uint16_t);
527 int 	arc_msgbuf(struct arc_softc *, void *, size_t, void *, size_t);
528 
529 #endif /* ! _PCI_ARCMSRVAR_H_ */
530