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: aic7770.c,v 1.1.1.1 2007/08/03 18:52:57 Exp $
41 *
42 * $FreeBSD$
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 = ARRAY_SIZE(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	int	error;
130	int	have_seeprom;
131	u_int	hostconf;
132	u_int   irq;
133	u_int	intdef;
134
135	error = entry->setup(ahc);
136	have_seeprom = 0;
137	if (error != 0)
138		return (error);
139
140	error = aic7770_map_registers(ahc, io);
141	if (error != 0)
142		return (error);
143
144	/*
145	 * Before we continue probing the card, ensure that
146	 * its interrupts are *disabled*.  We don't want
147	 * a misstep to hang the machine in an interrupt
148	 * storm.
149	 */
150	ahc_intr_enable(ahc, FALSE);
151
152	ahc->description = entry->name;
153	error = ahc_softc_init(ahc);
154	if (error != 0)
155		return (error);
156
157	ahc->bus_chip_init = aic7770_chip_init;
158	ahc->bus_suspend = aic7770_suspend;
159	ahc->bus_resume = aic7770_resume;
160
161	error = ahc_reset(ahc, /*reinit*/FALSE);
162	if (error != 0)
163		return (error);
164
165	/* Make sure we have a valid interrupt vector */
166	intdef = ahc_inb(ahc, INTDEF);
167	irq = intdef & VECTOR;
168	switch (irq) {
169	case 9:
170	case 10:
171	case 11:
172	case 12:
173	case 14:
174	case 15:
175		break;
176	default:
177		printf("aic7770_config: invalid irq setting %d\n", intdef);
178		return (ENXIO);
179	}
180
181	if ((intdef & EDGE_TRIG) != 0)
182		ahc->flags |= AHC_EDGE_INTERRUPT;
183
184	switch (ahc->chip & (AHC_EISA|AHC_VL)) {
185	case AHC_EISA:
186	{
187		u_int biosctrl;
188		u_int scsiconf;
189		u_int scsiconf1;
190
191		biosctrl = ahc_inb(ahc, HA_274_BIOSCTRL);
192		scsiconf = ahc_inb(ahc, SCSICONF);
193		scsiconf1 = ahc_inb(ahc, SCSICONF + 1);
194
195		/* Get the primary channel information */
196		if ((biosctrl & CHANNEL_B_PRIMARY) != 0)
197			ahc->flags |= 1;
198
199		if ((biosctrl & BIOSMODE) == BIOSDISABLED) {
200			ahc->flags |= AHC_USEDEFAULTS;
201		} else {
202			if ((ahc->features & AHC_WIDE) != 0) {
203				ahc->our_id = scsiconf1 & HWSCSIID;
204				if (scsiconf & TERM_ENB)
205					ahc->flags |= AHC_TERM_ENB_A;
206			} else {
207				ahc->our_id = scsiconf & HSCSIID;
208				ahc->our_id_b = scsiconf1 & HSCSIID;
209				if (scsiconf & TERM_ENB)
210					ahc->flags |= AHC_TERM_ENB_A;
211				if (scsiconf1 & TERM_ENB)
212					ahc->flags |= AHC_TERM_ENB_B;
213			}
214		}
215		if ((ahc_inb(ahc, HA_274_BIOSGLOBAL) & HA_274_EXTENDED_TRANS))
216			ahc->flags |= AHC_EXTENDED_TRANS_A|AHC_EXTENDED_TRANS_B;
217		break;
218	}
219	case AHC_VL:
220	{
221		have_seeprom = aha2840_load_seeprom(ahc);
222		break;
223	}
224	default:
225		break;
226	}
227	if (have_seeprom == 0) {
228		free(ahc->seep_config, M_DEVBUF);
229		ahc->seep_config = NULL;
230	}
231
232	/*
233	 * Ensure autoflush is enabled
234	 */
235	ahc_outb(ahc, SBLKCTL, ahc_inb(ahc, SBLKCTL) & ~AUTOFLUSHDIS);
236
237	/* Setup the FIFO threshold and the bus off time */
238	hostconf = ahc_inb(ahc, HOSTCONF);
239	ahc_outb(ahc, BUSSPD, hostconf & DFTHRSH);
240	ahc_outb(ahc, BUSTIME, (hostconf << 2) & BOFF);
241
242	ahc->bus_softc.aic7770_softc.busspd = hostconf & DFTHRSH;
243	ahc->bus_softc.aic7770_softc.bustime = (hostconf << 2) & BOFF;
244
245	/*
246	 * Generic aic7xxx initialization.
247	 */
248	error = ahc_init(ahc);
249	if (error != 0)
250		return (error);
251
252	error = aic7770_map_int(ahc, irq);
253	if (error != 0)
254		return (error);
255
256	ahc->init_level++;
257
258	/*
259	 * Enable the board's BUS drivers
260	 */
261	ahc_outb(ahc, BCTL, ENABLE);
262	return (0);
263}
264
265static int
266aic7770_chip_init(struct ahc_softc *ahc)
267{
268	ahc_outb(ahc, BUSSPD, ahc->bus_softc.aic7770_softc.busspd);
269	ahc_outb(ahc, BUSTIME, ahc->bus_softc.aic7770_softc.bustime);
270	ahc_outb(ahc, SBLKCTL, ahc_inb(ahc, SBLKCTL) & ~AUTOFLUSHDIS);
271	ahc_outb(ahc, BCTL, ENABLE);
272	return (ahc_chip_init(ahc));
273}
274
275static int
276aic7770_suspend(struct ahc_softc *ahc)
277{
278	return (ahc_suspend(ahc));
279}
280
281static int
282aic7770_resume(struct ahc_softc *ahc)
283{
284	return (ahc_resume(ahc));
285}
286
287/*
288 * Read the 284x SEEPROM.
289 */
290static int
291aha2840_load_seeprom(struct ahc_softc *ahc)
292{
293	struct	seeprom_descriptor sd;
294	struct	seeprom_config *sc;
295	int	have_seeprom;
296	uint8_t scsi_conf;
297
298	sd.sd_ahc = ahc;
299	sd.sd_control_offset = SEECTL_2840;
300	sd.sd_status_offset = STATUS_2840;
301	sd.sd_dataout_offset = STATUS_2840;
302	sd.sd_chip = C46;
303	sd.sd_MS = 0;
304	sd.sd_RDY = EEPROM_TF;
305	sd.sd_CS = CS_2840;
306	sd.sd_CK = CK_2840;
307	sd.sd_DO = DO_2840;
308	sd.sd_DI = DI_2840;
309	sc = ahc->seep_config;
310
311	if (bootverbose)
312		printf("%s: Reading SEEPROM...", ahc_name(ahc));
313	have_seeprom = ahc_read_seeprom(&sd, (uint16_t *)sc,
314					/*start_addr*/0, sizeof(*sc)/2);
315
316	if (have_seeprom) {
317
318		if (ahc_verify_cksum(sc) == 0) {
319			if(bootverbose)
320				printf ("checksum error\n");
321			have_seeprom = 0;
322		} else if (bootverbose) {
323			printf("done.\n");
324		}
325	}
326
327	if (!have_seeprom) {
328		if (bootverbose)
329			printf("%s: No SEEPROM available\n", ahc_name(ahc));
330		ahc->flags |= AHC_USEDEFAULTS;
331	} else {
332		/*
333		 * Put the data we've collected down into SRAM
334		 * where ahc_init will find it.
335		 */
336		int	 i;
337		int	 max_targ;
338		uint16_t discenable;
339
340		max_targ = (ahc->features & AHC_WIDE) != 0 ? 16 : 8;
341		discenable = 0;
342		for (i = 0; i < max_targ; i++){
343			uint8_t target_settings;
344
345			target_settings = (sc->device_flags[i] & CFXFER) << 4;
346			if (sc->device_flags[i] & CFSYNCH)
347				target_settings |= SOFS;
348			if (sc->device_flags[i] & CFWIDEB)
349				target_settings |= WIDEXFER;
350			if (sc->device_flags[i] & CFDISC)
351				discenable |= (0x01 << i);
352			ahc_outb(ahc, TARG_SCSIRATE + i, target_settings);
353		}
354		ahc_outb(ahc, DISC_DSB, ~(discenable & 0xff));
355		ahc_outb(ahc, DISC_DSB + 1, ~((discenable >> 8) & 0xff));
356
357		ahc->our_id = sc->brtime_id & CFSCSIID;
358
359		scsi_conf = (ahc->our_id & 0x7);
360		if (sc->adapter_control & CFSPARITY)
361			scsi_conf |= ENSPCHK;
362		if (sc->adapter_control & CFRESETB)
363			scsi_conf |= RESET_SCSI;
364
365		if (sc->bios_control & CF284XEXTEND)
366			ahc->flags |= AHC_EXTENDED_TRANS_A;
367		/* Set SCSICONF info */
368		ahc_outb(ahc, SCSICONF, scsi_conf);
369
370		if (sc->adapter_control & CF284XSTERM)
371			ahc->flags |= AHC_TERM_ENB_A;
372	}
373	return (have_seeprom);
374}
375
376static int
377ahc_aic7770_VL_setup(struct ahc_softc *ahc)
378{
379	int error;
380
381	error = ahc_aic7770_setup(ahc);
382	ahc->chip |= AHC_VL;
383	return (error);
384}
385
386static int
387ahc_aic7770_EISA_setup(struct ahc_softc *ahc)
388{
389	int error;
390
391	error = ahc_aic7770_setup(ahc);
392	ahc->chip |= AHC_EISA;
393	return (error);
394}
395
396static int
397ahc_aic7770_setup(struct ahc_softc *ahc)
398{
399	ahc->channel = 'A';
400	ahc->channel_b = 'B';
401	ahc->chip = AHC_AIC7770;
402	ahc->features = AHC_AIC7770_FE;
403	ahc->bugs |= AHC_TMODE_WIDEODD_BUG;
404	ahc->flags |= AHC_PAGESCBS;
405	ahc->instruction_ram_size = 448;
406	return (0);
407}
408