aic7770.c revision 114621 
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#30 $
41 *
42 * $FreeBSD: head/sys/dev/aic7xxx/aic7770.c 114621 2003-05-03 23:55:38Z 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#define	ID_OLV_274x	0x04907782 /* Olivetti OEM */
60#define	ID_OLV_274xD	0x04907783 /* Olivetti OEM (Differential) */
61
62static int aic7770_chip_init(struct ahc_softc *ahc);
63static int aic7770_suspend(struct ahc_softc *ahc);
64static int aic7770_resume(struct ahc_softc *ahc);
65static int aha2840_load_seeprom(struct ahc_softc *ahc);
66static ahc_device_setup_t ahc_aic7770_VL_setup;
67static ahc_device_setup_t ahc_aic7770_EISA_setup;;
68static ahc_device_setup_t ahc_aic7770_setup;
69
70
71struct aic7770_identity aic7770_ident_table [] =
72{
73	{
74		ID_AHA_274x,
75		0xFFFFFFFF,
76		"Adaptec 274X SCSI adapter",
77		ahc_aic7770_EISA_setup
78	},
79	{
80		ID_AHA_284xB,
81		0xFFFFFFFE,
82		"Adaptec 284X SCSI adapter",
83		ahc_aic7770_VL_setup
84	},
85	{
86		ID_OLV_274x,
87		0xFFFFFFFF,
88		"Adaptec (Olivetti OEM) 274X SCSI adapter",
89		ahc_aic7770_EISA_setup
90	},
91	{
92		ID_OLV_274xD,
93		0xFFFFFFFF,
94		"Adaptec (Olivetti OEM) 274X Differential SCSI adapter",
95		ahc_aic7770_EISA_setup
96	},
97	/* Generic chip probes for devices we don't know 'exactly' */
98	{
99		ID_AIC7770,
100		0xFFFFFFFF,
101		"Adaptec aic7770 SCSI adapter",
102		ahc_aic7770_EISA_setup
103	}
104};
105const int ahc_num_aic7770_devs = NUM_ELEMENTS(aic7770_ident_table);
106
107struct aic7770_identity *
108aic7770_find_device(uint32_t id)
109{
110	struct	aic7770_identity *entry;
111	int	i;
112
113	for (i = 0; i < ahc_num_aic7770_devs; i++) {
114		entry = &aic7770_ident_table[i];
115		if (entry->full_id == (id & entry->id_mask))
116			return (entry);
117	}
118	return (NULL);
119}
120
121int
122aic7770_config(struct ahc_softc *ahc, struct aic7770_identity *entry, u_int io)
123{
124	u_long	l;
125	int	error;
126	int	have_seeprom;
127	u_int	hostconf;
128	u_int   irq;
129	u_int	intdef;
130
131	error = entry->setup(ahc);
132	have_seeprom = 0;
133	if (error != 0)
134		return (error);
135
136	error = aic7770_map_registers(ahc, io);
137	if (error != 0)
138		return (error);
139
140	/*
141	 * Before we continue probing the card, ensure that
142	 * its interrupts are *disabled*.  We don't want
143	 * a misstep to hang the machine in an interrupt
144	 * storm.
145	 */
146	ahc_intr_enable(ahc, FALSE);
147
148	ahc->description = entry->name;
149	error = ahc_softc_init(ahc);
150	if (error != 0)
151		return (error);
152
153	ahc->bus_chip_init = aic7770_chip_init;
154	ahc->bus_suspend = aic7770_suspend;
155	ahc->bus_resume = aic7770_resume;
156
157	error = ahc_reset(ahc);
158	if (error != 0)
159		return (error);
160
161	/* Make sure we have a valid interrupt vector */
162	intdef = ahc_inb(ahc, INTDEF);
163	irq = intdef & VECTOR;
164	switch (irq) {
165	case 9:
166	case 10:
167	case 11:
168	case 12:
169	case 14:
170	case 15:
171		break;
172	default:
173		printf("aic7770_config: illegal irq setting %d\n", intdef);
174		return (ENXIO);
175	}
176
177	if ((intdef & EDGE_TRIG) != 0)
178		ahc->flags |= AHC_EDGE_INTERRUPT;
179
180	switch (ahc->chip & (AHC_EISA|AHC_VL)) {
181	case AHC_EISA:
182	{
183		u_int biosctrl;
184		u_int scsiconf;
185		u_int scsiconf1;
186
187		biosctrl = ahc_inb(ahc, HA_274_BIOSCTRL);
188		scsiconf = ahc_inb(ahc, SCSICONF);
189		scsiconf1 = ahc_inb(ahc, SCSICONF + 1);
190
191		/* Get the primary channel information */
192		if ((biosctrl & CHANNEL_B_PRIMARY) != 0)
193			ahc->flags |= 1;
194
195		if ((biosctrl & BIOSMODE) == BIOSDISABLED) {
196			ahc->flags |= AHC_USEDEFAULTS;
197		} else {
198			if ((ahc->features & AHC_WIDE) != 0) {
199				ahc->our_id = scsiconf1 & HWSCSIID;
200				if (scsiconf & TERM_ENB)
201					ahc->flags |= AHC_TERM_ENB_A;
202			} else {
203				ahc->our_id = scsiconf & HSCSIID;
204				ahc->our_id_b = scsiconf1 & HSCSIID;
205				if (scsiconf & TERM_ENB)
206					ahc->flags |= AHC_TERM_ENB_A;
207				if (scsiconf1 & TERM_ENB)
208					ahc->flags |= AHC_TERM_ENB_B;
209			}
210		}
211		if ((ahc_inb(ahc, HA_274_BIOSGLOBAL) & HA_274_EXTENDED_TRANS))
212			ahc->flags |= AHC_EXTENDED_TRANS_A|AHC_EXTENDED_TRANS_B;
213		break;
214	}
215	case AHC_VL:
216	{
217		have_seeprom = aha2840_load_seeprom(ahc);
218		break;
219	}
220	default:
221		break;
222	}
223	if (have_seeprom == 0) {
224		free(ahc->seep_config, M_DEVBUF);
225		ahc->seep_config = NULL;
226	}
227
228	/*
229	 * Ensure autoflush is enabled
230	 */
231	ahc_outb(ahc, SBLKCTL, ahc_inb(ahc, SBLKCTL) & ~AUTOFLUSHDIS);
232
233	/* Setup the FIFO threshold and the bus off time */
234	hostconf = ahc_inb(ahc, HOSTCONF);
235	ahc_outb(ahc, BUSSPD, hostconf & DFTHRSH);
236	ahc_outb(ahc, BUSTIME, (hostconf << 2) & BOFF);
237
238	ahc->bus_softc.aic7770_softc.busspd = hostconf & DFTHRSH;
239	ahc->bus_softc.aic7770_softc.bustime = (hostconf << 2) & BOFF;
240
241	/*
242	 * Generic aic7xxx initialization.
243	 */
244	error = ahc_init(ahc);
245	if (error != 0)
246		return (error);
247
248	error = aic7770_map_int(ahc, irq);
249	if (error != 0)
250		return (error);
251
252	ahc_list_lock(&l);
253	/*
254	 * Link this softc in with all other ahc instances.
255	 */
256	ahc_softc_insert(ahc);
257
258	/*
259	 * Enable the board's BUS drivers
260	 */
261	ahc_outb(ahc, BCTL, ENABLE);
262
263	ahc_list_unlock(&l);
264
265	return (0);
266}
267
268static int
269aic7770_chip_init(struct ahc_softc *ahc)
270{
271	ahc_outb(ahc, BUSSPD, ahc->bus_softc.aic7770_softc.busspd);
272	ahc_outb(ahc, BUSTIME, ahc->bus_softc.aic7770_softc.bustime);
273	ahc_outb(ahc, SBLKCTL, ahc_inb(ahc, SBLKCTL) & ~AUTOFLUSHDIS);
274	ahc_outb(ahc, BCTL, ENABLE);
275	return (ahc_chip_init(ahc));
276}
277
278static int
279aic7770_suspend(struct ahc_softc *ahc)
280{
281	return (ahc_suspend(ahc));
282}
283
284static int
285aic7770_resume(struct ahc_softc *ahc)
286{
287	return (ahc_resume(ahc));
288}
289
290/*
291 * Read the 284x SEEPROM.
292 */
293static int
294aha2840_load_seeprom(struct ahc_softc *ahc)
295{
296	struct	seeprom_descriptor sd;
297	struct	seeprom_config *sc;
298	int	have_seeprom;
299	uint8_t scsi_conf;
300
301	sd.sd_ahc = ahc;
302	sd.sd_control_offset = SEECTL_2840;
303	sd.sd_status_offset = STATUS_2840;
304	sd.sd_dataout_offset = STATUS_2840;
305	sd.sd_chip = C46;
306	sd.sd_MS = 0;
307	sd.sd_RDY = EEPROM_TF;
308	sd.sd_CS = CS_2840;
309	sd.sd_CK = CK_2840;
310	sd.sd_DO = DO_2840;
311	sd.sd_DI = DI_2840;
312	sc = ahc->seep_config;
313
314	if (bootverbose)
315		printf("%s: Reading SEEPROM...", ahc_name(ahc));
316	have_seeprom = ahc_read_seeprom(&sd, (uint16_t *)sc,
317					/*start_addr*/0, sizeof(*sc)/2);
318
319	if (have_seeprom) {
320
321		if (ahc_verify_cksum(sc) == 0) {
322			if(bootverbose)
323				printf ("checksum error\n");
324			have_seeprom = 0;
325		} else if (bootverbose) {
326			printf("done.\n");
327		}
328	}
329
330	if (!have_seeprom) {
331		if (bootverbose)
332			printf("%s: No SEEPROM available\n", ahc_name(ahc));
333		ahc->flags |= AHC_USEDEFAULTS;
334	} else {
335		/*
336		 * Put the data we've collected down into SRAM
337		 * where ahc_init will find it.
338		 */
339		int	 i;
340		int	 max_targ;
341		uint16_t discenable;
342
343		max_targ = (ahc->features & AHC_WIDE) != 0 ? 16 : 8;
344		discenable = 0;
345		for (i = 0; i < max_targ; i++){
346			uint8_t target_settings;
347
348			target_settings = (sc->device_flags[i] & CFXFER) << 4;
349			if (sc->device_flags[i] & CFSYNCH)
350				target_settings |= SOFS;
351			if (sc->device_flags[i] & CFWIDEB)
352				target_settings |= WIDEXFER;
353			if (sc->device_flags[i] & CFDISC)
354				discenable |= (0x01 << i);
355			ahc_outb(ahc, TARG_SCSIRATE + i, target_settings);
356		}
357		ahc_outb(ahc, DISC_DSB, ~(discenable & 0xff));
358		ahc_outb(ahc, DISC_DSB + 1, ~((discenable >> 8) & 0xff));
359
360		ahc->our_id = sc->brtime_id & CFSCSIID;
361
362		scsi_conf = (ahc->our_id & 0x7);
363		if (sc->adapter_control & CFSPARITY)
364			scsi_conf |= ENSPCHK;
365		if (sc->adapter_control & CFRESETB)
366			scsi_conf |= RESET_SCSI;
367
368		if (sc->bios_control & CF284XEXTEND)
369			ahc->flags |= AHC_EXTENDED_TRANS_A;
370		/* Set SCSICONF info */
371		ahc_outb(ahc, SCSICONF, scsi_conf);
372
373		if (sc->adapter_control & CF284XSTERM)
374			ahc->flags |= AHC_TERM_ENB_A;
375	}
376	return (have_seeprom);
377}
378
379static int
380ahc_aic7770_VL_setup(struct ahc_softc *ahc)
381{
382	int error;
383
384	error = ahc_aic7770_setup(ahc);
385	ahc->chip |= AHC_VL;
386	return (error);
387}
388
389static int
390ahc_aic7770_EISA_setup(struct ahc_softc *ahc)
391{
392	int error;
393
394	error = ahc_aic7770_setup(ahc);
395	ahc->chip |= AHC_EISA;
396	return (error);
397}
398
399static int
400ahc_aic7770_setup(struct ahc_softc *ahc)
401{
402	ahc->channel = 'A';
403	ahc->channel_b = 'B';
404	ahc->chip = AHC_AIC7770;
405	ahc->features = AHC_AIC7770_FE;
406	ahc->bugs |= AHC_TMODE_WIDEODD_BUG;
407	ahc->flags |= AHC_PAGESCBS;
408	ahc->instruction_ram_size = 448;
409	return (0);
410}
411