aic7770.c revision 115915 
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#31 $
41 *
42 * $FreeBSD: head/sys/dev/aic7xxx/aic7770.c 115915 2003-06-06 23:40:48Z 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
70struct aic7770_identity aic7770_ident_table[] =
71{
72	{
73		ID_AHA_274x,
74		0xFFFFFFFF,
75		"Adaptec 274X SCSI adapter",
76		ahc_aic7770_EISA_setup
77	},
78	{
79		ID_AHA_284xB,
80		0xFFFFFFFE,
81		"Adaptec 284X SCSI adapter",
82		ahc_aic7770_VL_setup
83	},
84	{
85		ID_AHA_284x,
86		0xFFFFFFFE,
87		"Adaptec 284X SCSI adapter (BIOS Disabled)",
88		ahc_aic7770_VL_setup
89	},
90	{
91		ID_OLV_274x,
92		0xFFFFFFFF,
93		"Adaptec (Olivetti OEM) 274X SCSI adapter",
94		ahc_aic7770_EISA_setup
95	},
96	{
97		ID_OLV_274xD,
98		0xFFFFFFFF,
99		"Adaptec (Olivetti OEM) 274X Differential SCSI adapter",
100		ahc_aic7770_EISA_setup
101	},
102	/* Generic chip probes for devices we don't know 'exactly' */
103	{
104		ID_AIC7770,
105		0xFFFFFFFF,
106		"Adaptec aic7770 SCSI adapter",
107		ahc_aic7770_EISA_setup
108	}
109};
110const int ahc_num_aic7770_devs = NUM_ELEMENTS(aic7770_ident_table);
111
112struct aic7770_identity *
113aic7770_find_device(uint32_t id)
114{
115	struct	aic7770_identity *entry;
116	int	i;
117
118	for (i = 0; i < ahc_num_aic7770_devs; i++) {
119		entry = &aic7770_ident_table[i];
120		if (entry->full_id == (id & entry->id_mask))
121			return (entry);
122	}
123	return (NULL);
124}
125
126int
127aic7770_config(struct ahc_softc *ahc, struct aic7770_identity *entry, u_int io)
128{
129	u_long	l;
130	int	error;
131	int	have_seeprom;
132	u_int	hostconf;
133	u_int   irq;
134	u_int	intdef;
135
136	error = entry->setup(ahc);
137	have_seeprom = 0;
138	if (error != 0)
139		return (error);
140
141	error = aic7770_map_registers(ahc, io);
142	if (error != 0)
143		return (error);
144
145	/*
146	 * Before we continue probing the card, ensure that
147	 * its interrupts are *disabled*.  We don't want
148	 * a misstep to hang the machine in an interrupt
149	 * storm.
150	 */
151	ahc_intr_enable(ahc, FALSE);
152
153	ahc->description = entry->name;
154	error = ahc_softc_init(ahc);
155	if (error != 0)
156		return (error);
157
158	ahc->bus_chip_init = aic7770_chip_init;
159	ahc->bus_suspend = aic7770_suspend;
160	ahc->bus_resume = aic7770_resume;
161
162	error = ahc_reset(ahc);
163	if (error != 0)
164		return (error);
165
166	/* Make sure we have a valid interrupt vector */
167	intdef = ahc_inb(ahc, INTDEF);
168	irq = intdef & VECTOR;
169	switch (irq) {
170	case 9:
171	case 10:
172	case 11:
173	case 12:
174	case 14:
175	case 15:
176		break;
177	default:
178		printf("aic7770_config: illegal irq setting %d\n", intdef);
179		return (ENXIO);
180	}
181
182	if ((intdef & EDGE_TRIG) != 0)
183		ahc->flags |= AHC_EDGE_INTERRUPT;
184
185	switch (ahc->chip & (AHC_EISA|AHC_VL)) {
186	case AHC_EISA:
187	{
188		u_int biosctrl;
189		u_int scsiconf;
190		u_int scsiconf1;
191
192		biosctrl = ahc_inb(ahc, HA_274_BIOSCTRL);
193		scsiconf = ahc_inb(ahc, SCSICONF);
194		scsiconf1 = ahc_inb(ahc, SCSICONF + 1);
195
196		/* Get the primary channel information */
197		if ((biosctrl & CHANNEL_B_PRIMARY) != 0)
198			ahc->flags |= 1;
199
200		if ((biosctrl & BIOSMODE) == BIOSDISABLED) {
201			ahc->flags |= AHC_USEDEFAULTS;
202		} else {
203			if ((ahc->features & AHC_WIDE) != 0) {
204				ahc->our_id = scsiconf1 & HWSCSIID;
205				if (scsiconf & TERM_ENB)
206					ahc->flags |= AHC_TERM_ENB_A;
207			} else {
208				ahc->our_id = scsiconf & HSCSIID;
209				ahc->our_id_b = scsiconf1 & HSCSIID;
210				if (scsiconf & TERM_ENB)
211					ahc->flags |= AHC_TERM_ENB_A;
212				if (scsiconf1 & TERM_ENB)
213					ahc->flags |= AHC_TERM_ENB_B;
214			}
215		}
216		if ((ahc_inb(ahc, HA_274_BIOSGLOBAL) & HA_274_EXTENDED_TRANS))
217			ahc->flags |= AHC_EXTENDED_TRANS_A|AHC_EXTENDED_TRANS_B;
218		break;
219	}
220	case AHC_VL:
221	{
222		have_seeprom = aha2840_load_seeprom(ahc);
223		break;
224	}
225	default:
226		break;
227	}
228	if (have_seeprom == 0) {
229		free(ahc->seep_config, M_DEVBUF);
230		ahc->seep_config = NULL;
231	}
232
233	/*
234	 * Ensure autoflush is enabled
235	 */
236	ahc_outb(ahc, SBLKCTL, ahc_inb(ahc, SBLKCTL) & ~AUTOFLUSHDIS);
237
238	/* Setup the FIFO threshold and the bus off time */
239	hostconf = ahc_inb(ahc, HOSTCONF);
240	ahc_outb(ahc, BUSSPD, hostconf & DFTHRSH);
241	ahc_outb(ahc, BUSTIME, (hostconf << 2) & BOFF);
242
243	ahc->bus_softc.aic7770_softc.busspd = hostconf & DFTHRSH;
244	ahc->bus_softc.aic7770_softc.bustime = (hostconf << 2) & BOFF;
245
246	/*
247	 * Generic aic7xxx initialization.
248	 */
249	error = ahc_init(ahc);
250	if (error != 0)
251		return (error);
252
253	error = aic7770_map_int(ahc, irq);
254	if (error != 0)
255		return (error);
256
257	ahc_list_lock(&l);
258	/*
259	 * Link this softc in with all other ahc instances.
260	 */
261	ahc_softc_insert(ahc);
262
263	/*
264	 * Enable the board's BUS drivers
265	 */
266	ahc_outb(ahc, BCTL, ENABLE);
267
268	ahc_list_unlock(&l);
269
270	return (0);
271}
272
273static int
274aic7770_chip_init(struct ahc_softc *ahc)
275{
276	ahc_outb(ahc, BUSSPD, ahc->bus_softc.aic7770_softc.busspd);
277	ahc_outb(ahc, BUSTIME, ahc->bus_softc.aic7770_softc.bustime);
278	ahc_outb(ahc, SBLKCTL, ahc_inb(ahc, SBLKCTL) & ~AUTOFLUSHDIS);
279	ahc_outb(ahc, BCTL, ENABLE);
280	return (ahc_chip_init(ahc));
281}
282
283static int
284aic7770_suspend(struct ahc_softc *ahc)
285{
286	return (ahc_suspend(ahc));
287}
288
289static int
290aic7770_resume(struct ahc_softc *ahc)
291{
292	return (ahc_resume(ahc));
293}
294
295/*
296 * Read the 284x SEEPROM.
297 */
298static int
299aha2840_load_seeprom(struct ahc_softc *ahc)
300{
301	struct	seeprom_descriptor sd;
302	struct	seeprom_config *sc;
303	int	have_seeprom;
304	uint8_t scsi_conf;
305
306	sd.sd_ahc = ahc;
307	sd.sd_control_offset = SEECTL_2840;
308	sd.sd_status_offset = STATUS_2840;
309	sd.sd_dataout_offset = STATUS_2840;
310	sd.sd_chip = C46;
311	sd.sd_MS = 0;
312	sd.sd_RDY = EEPROM_TF;
313	sd.sd_CS = CS_2840;
314	sd.sd_CK = CK_2840;
315	sd.sd_DO = DO_2840;
316	sd.sd_DI = DI_2840;
317	sc = ahc->seep_config;
318
319	if (bootverbose)
320		printf("%s: Reading SEEPROM...", ahc_name(ahc));
321	have_seeprom = ahc_read_seeprom(&sd, (uint16_t *)sc,
322					/*start_addr*/0, sizeof(*sc)/2);
323
324	if (have_seeprom) {
325
326		if (ahc_verify_cksum(sc) == 0) {
327			if(bootverbose)
328				printf ("checksum error\n");
329			have_seeprom = 0;
330		} else if (bootverbose) {
331			printf("done.\n");
332		}
333	}
334
335	if (!have_seeprom) {
336		if (bootverbose)
337			printf("%s: No SEEPROM available\n", ahc_name(ahc));
338		ahc->flags |= AHC_USEDEFAULTS;
339	} else {
340		/*
341		 * Put the data we've collected down into SRAM
342		 * where ahc_init will find it.
343		 */
344		int	 i;
345		int	 max_targ;
346		uint16_t discenable;
347
348		max_targ = (ahc->features & AHC_WIDE) != 0 ? 16 : 8;
349		discenable = 0;
350		for (i = 0; i < max_targ; i++){
351			uint8_t target_settings;
352
353			target_settings = (sc->device_flags[i] & CFXFER) << 4;
354			if (sc->device_flags[i] & CFSYNCH)
355				target_settings |= SOFS;
356			if (sc->device_flags[i] & CFWIDEB)
357				target_settings |= WIDEXFER;
358			if (sc->device_flags[i] & CFDISC)
359				discenable |= (0x01 << i);
360			ahc_outb(ahc, TARG_SCSIRATE + i, target_settings);
361		}
362		ahc_outb(ahc, DISC_DSB, ~(discenable & 0xff));
363		ahc_outb(ahc, DISC_DSB + 1, ~((discenable >> 8) & 0xff));
364
365		ahc->our_id = sc->brtime_id & CFSCSIID;
366
367		scsi_conf = (ahc->our_id & 0x7);
368		if (sc->adapter_control & CFSPARITY)
369			scsi_conf |= ENSPCHK;
370		if (sc->adapter_control & CFRESETB)
371			scsi_conf |= RESET_SCSI;
372
373		if (sc->bios_control & CF284XEXTEND)
374			ahc->flags |= AHC_EXTENDED_TRANS_A;
375		/* Set SCSICONF info */
376		ahc_outb(ahc, SCSICONF, scsi_conf);
377
378		if (sc->adapter_control & CF284XSTERM)
379			ahc->flags |= AHC_TERM_ENB_A;
380	}
381	return (have_seeprom);
382}
383
384static int
385ahc_aic7770_VL_setup(struct ahc_softc *ahc)
386{
387	int error;
388
389	error = ahc_aic7770_setup(ahc);
390	ahc->chip |= AHC_VL;
391	return (error);
392}
393
394static int
395ahc_aic7770_EISA_setup(struct ahc_softc *ahc)
396{
397	int error;
398
399	error = ahc_aic7770_setup(ahc);
400	ahc->chip |= AHC_EISA;
401	return (error);
402}
403
404static int
405ahc_aic7770_setup(struct ahc_softc *ahc)
406{
407	ahc->channel = 'A';
408	ahc->channel_b = 'B';
409	ahc->chip = AHC_AIC7770;
410	ahc->features = AHC_AIC7770_FE;
411	ahc->bugs |= AHC_TMODE_WIDEODD_BUG;
412	ahc->flags |= AHC_PAGESCBS;
413	ahc->instruction_ram_size = 448;
414	return (0);
415}
416