aic7770.c revision 95378 
1/*
2 * Product specific probe and attach routines for:
3 * 	27/284X and aic7770 motherboard SCSI controllers
4 *
5 * Copyright (c) 1994-1998, 2000, 2001 Justin T. Gibbs.
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 *    notice, this list of conditions, and the following disclaimer,
13 *    without modification.
14 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
15 *    substantially similar to the "NO WARRANTY" disclaimer below
16 *    ("Disclaimer") and any redistribution must be conditioned upon
17 *    including a substantially similar Disclaimer requirement for further
18 *    binary redistribution.
19 * 3. Neither the names of the above-listed copyright holders nor the names
20 *    of any contributors may be used to endorse or promote products derived
21 *    from this software without specific prior written permission.
22 *
23 * Alternatively, this software may be distributed under the terms of the
24 * GNU General Public License ("GPL") version 2 as published by the Free
25 * Software Foundation.
26 *
27 * NO WARRANTY
28 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
29 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
30 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
31 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
32 * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
33 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
34 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
35 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
36 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
37 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
38 * POSSIBILITY OF SUCH DAMAGES.
39 *
40 * $Id: //depot/aic7xxx/aic7xxx/aic7770.c#16 $
41 *
42 * $FreeBSD: head/sys/dev/aic7xxx/aic7770.c 95378 2002-04-24 16:58:51Z gibbs $
43 */
44
45#ifdef __linux__
46#include "aic7xxx_osm.h"
47#include "aic7xxx_inline.h"
48#include "aic7xxx_93cx6.h"
49#else
50#include <dev/aic7xxx/aic7xxx_osm.h>
51#include <dev/aic7xxx/aic7xxx_inline.h>
52#include <dev/aic7xxx/aic7xxx_93cx6.h>
53#endif
54
55#define ID_AIC7770	0x04907770
56#define ID_AHA_274x	0x04907771
57#define ID_AHA_284xB	0x04907756 /* BIOS enabled */
58#define ID_AHA_284x	0x04907757 /* BIOS disabled*/
59
60static void aha2840_load_seeprom(struct ahc_softc *ahc);
61static ahc_device_setup_t ahc_aic7770_VL_setup;
62static ahc_device_setup_t ahc_aic7770_EISA_setup;;
63static ahc_device_setup_t ahc_aic7770_setup;
64
65
66struct aic7770_identity aic7770_ident_table [] =
67{
68	{
69		ID_AHA_274x,
70		0xFFFFFFFF,
71		"Adaptec 274X SCSI adapter",
72		ahc_aic7770_EISA_setup
73	},
74	{
75		ID_AHA_284xB,
76		0xFFFFFFFE,
77		"Adaptec 284X SCSI adapter",
78		ahc_aic7770_VL_setup
79	},
80	/* Generic chip probes for devices we don't know 'exactly' */
81	{
82		ID_AIC7770,
83		0xFFFFFFFF,
84		"Adaptec aic7770 SCSI adapter",
85		ahc_aic7770_EISA_setup
86	}
87};
88const int ahc_num_aic7770_devs = NUM_ELEMENTS(aic7770_ident_table);
89
90struct aic7770_identity *
91aic7770_find_device(uint32_t id)
92{
93	struct	aic7770_identity *entry;
94	int	i;
95
96	for (i = 0; i < ahc_num_aic7770_devs; i++) {
97		entry = &aic7770_ident_table[i];
98		if (entry->full_id == (id & entry->id_mask))
99			return (entry);
100	}
101	return (NULL);
102}
103
104int
105aic7770_config(struct ahc_softc *ahc, struct aic7770_identity *entry, u_int io)
106{
107	int	error;
108	u_int	hostconf;
109	u_int   irq;
110	u_int	intdef;
111
112	error = entry->setup(ahc);
113	if (error != 0)
114		return (error);
115
116	error = aic7770_map_registers(ahc, io);
117	if (error != 0)
118		return (error);
119
120	/*
121	 * Before we continue probing the card, ensure that
122	 * its interrupts are *disabled*.  We don't want
123	 * a misstep to hang the machine in an interrupt
124	 * storm.
125	 */
126	ahc_intr_enable(ahc, FALSE);
127
128	ahc->description = entry->name;
129	error = ahc_softc_init(ahc);
130
131	error = ahc_reset(ahc);
132	if (error != 0)
133		return (error);
134
135	/* Make sure we have a valid interrupt vector */
136	intdef = ahc_inb(ahc, INTDEF);
137	irq = intdef & VECTOR;
138	switch (irq) {
139	case 9:
140	case 10:
141	case 11:
142	case 12:
143	case 14:
144	case 15:
145		break;
146	default:
147		printf("aic7770_config: illegal irq setting %d\n", intdef);
148		return (ENXIO);
149	}
150
151	if ((intdef & EDGE_TRIG) != 0)
152		ahc->flags |= AHC_EDGE_INTERRUPT;
153
154	switch (ahc->chip & (AHC_EISA|AHC_VL)) {
155	case AHC_EISA:
156	{
157		u_int biosctrl;
158		u_int scsiconf;
159		u_int scsiconf1;
160
161		biosctrl = ahc_inb(ahc, HA_274_BIOSCTRL);
162		scsiconf = ahc_inb(ahc, SCSICONF);
163		scsiconf1 = ahc_inb(ahc, SCSICONF + 1);
164
165		/* Get the primary channel information */
166		if ((biosctrl & CHANNEL_B_PRIMARY) != 0)
167			ahc->flags |= 1;
168
169		if ((biosctrl & BIOSMODE) == BIOSDISABLED) {
170			ahc->flags |= AHC_USEDEFAULTS;
171		} else {
172			if ((ahc->features & AHC_WIDE) != 0) {
173				ahc->our_id = scsiconf1 & HWSCSIID;
174				if (scsiconf & TERM_ENB)
175					ahc->flags |= AHC_TERM_ENB_A;
176			} else {
177				ahc->our_id = scsiconf & HSCSIID;
178				ahc->our_id_b = scsiconf1 & HSCSIID;
179				if (scsiconf & TERM_ENB)
180					ahc->flags |= AHC_TERM_ENB_A;
181				if (scsiconf1 & TERM_ENB)
182					ahc->flags |= AHC_TERM_ENB_B;
183			}
184		}
185		/*
186		 * We have no way to tell, so assume extended
187		 * translation is enabled.
188		 */
189		ahc->flags |= AHC_EXTENDED_TRANS_A|AHC_EXTENDED_TRANS_B;
190		break;
191	}
192	case AHC_VL:
193	{
194		aha2840_load_seeprom(ahc);
195		break;
196	}
197	default:
198		break;
199	}
200
201	/*
202	 * Ensure autoflush is enabled
203	 */
204	ahc_outb(ahc, SBLKCTL, ahc_inb(ahc, SBLKCTL) & ~AUTOFLUSHDIS);
205
206	/* Setup the FIFO threshold and the bus off time */
207	hostconf = ahc_inb(ahc, HOSTCONF);
208	ahc_outb(ahc, BUSSPD, hostconf & DFTHRSH);
209	ahc_outb(ahc, BUSTIME, (hostconf << 2) & BOFF);
210
211	/*
212	 * Generic aic7xxx initialization.
213	 */
214	error = ahc_init(ahc);
215	if (error != 0)
216		return (error);
217
218	/*
219	 * Link this softc in with all other ahc instances.
220	 */
221	ahc_softc_insert(ahc);
222
223	error = aic7770_map_int(ahc, irq);
224	if (error != 0)
225		return (error);
226
227	/*
228	 * Enable the board's BUS drivers
229	 */
230	ahc_outb(ahc, BCTL, ENABLE);
231
232	/*
233	 * Allow interrupts.
234	 */
235	ahc_intr_enable(ahc, TRUE);
236
237	return (0);
238}
239
240/*
241 * Read the 284x SEEPROM.
242 */
243static void
244aha2840_load_seeprom(struct ahc_softc *ahc)
245{
246	struct	  seeprom_descriptor sd;
247	struct	  seeprom_config sc;
248	uint8_t   scsi_conf;
249	int	  have_seeprom;
250
251	sd.sd_ahc = ahc;
252	sd.sd_control_offset = SEECTL_2840;
253	sd.sd_status_offset = STATUS_2840;
254	sd.sd_dataout_offset = STATUS_2840;
255	sd.sd_chip = C46;
256	sd.sd_MS = 0;
257	sd.sd_RDY = EEPROM_TF;
258	sd.sd_CS = CS_2840;
259	sd.sd_CK = CK_2840;
260	sd.sd_DO = DO_2840;
261	sd.sd_DI = DI_2840;
262
263	if (bootverbose)
264		printf("%s: Reading SEEPROM...", ahc_name(ahc));
265	have_seeprom = ahc_read_seeprom(&sd, (uint16_t *)&sc,
266					/*start_addr*/0, sizeof(sc)/2);
267
268	if (have_seeprom) {
269
270		if (ahc_verify_cksum(&sc) == 0) {
271			if(bootverbose)
272				printf ("checksum error\n");
273			have_seeprom = 0;
274		} else if (bootverbose) {
275			printf("done.\n");
276		}
277	}
278
279	if (!have_seeprom) {
280		if (bootverbose)
281			printf("%s: No SEEPROM available\n", ahc_name(ahc));
282		ahc->flags |= AHC_USEDEFAULTS;
283	} else {
284		/*
285		 * Put the data we've collected down into SRAM
286		 * where ahc_init will find it.
287		 */
288		int i;
289		int max_targ = (ahc->features & AHC_WIDE) != 0 ? 16 : 8;
290		uint16_t discenable;
291
292		discenable = 0;
293		for (i = 0; i < max_targ; i++){
294	                uint8_t target_settings;
295			target_settings = (sc.device_flags[i] & CFXFER) << 4;
296			if (sc.device_flags[i] & CFSYNCH)
297				target_settings |= SOFS;
298			if (sc.device_flags[i] & CFWIDEB)
299				target_settings |= WIDEXFER;
300			if (sc.device_flags[i] & CFDISC)
301				discenable |= (0x01 << i);
302			ahc_outb(ahc, TARG_SCSIRATE + i, target_settings);
303		}
304		ahc_outb(ahc, DISC_DSB, ~(discenable & 0xff));
305		ahc_outb(ahc, DISC_DSB + 1, ~((discenable >> 8) & 0xff));
306
307		ahc->our_id = sc.brtime_id & CFSCSIID;
308
309		scsi_conf = (ahc->our_id & 0x7);
310		if (sc.adapter_control & CFSPARITY)
311			scsi_conf |= ENSPCHK;
312		if (sc.adapter_control & CFRESETB)
313			scsi_conf |= RESET_SCSI;
314
315		if (sc.bios_control & CF284XEXTEND)
316			ahc->flags |= AHC_EXTENDED_TRANS_A;
317		/* Set SCSICONF info */
318		ahc_outb(ahc, SCSICONF, scsi_conf);
319
320		if (sc.adapter_control & CF284XSTERM)
321			ahc->flags |= AHC_TERM_ENB_A;
322	}
323}
324
325static int
326ahc_aic7770_VL_setup(struct ahc_softc *ahc)
327{
328	int error;
329
330	error = ahc_aic7770_setup(ahc);
331	ahc->chip |= AHC_VL;
332	return (error);
333}
334
335static int
336ahc_aic7770_EISA_setup(struct ahc_softc *ahc)
337{
338	int error;
339
340	error = ahc_aic7770_setup(ahc);
341	ahc->chip |= AHC_EISA;
342	return (error);
343}
344
345static int
346ahc_aic7770_setup(struct ahc_softc *ahc)
347{
348	ahc->channel = 'A';
349	ahc->channel_b = 'B';
350	ahc->chip = AHC_AIC7770;
351	ahc->features = AHC_AIC7770_FE;
352	ahc->bugs |= AHC_TMODE_WIDEODD_BUG;
353	ahc->flags |= AHC_PAGESCBS;
354	return (0);
355}
356