aic7770.c

  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#32 $
 41 *
 42 * $FreeBSD$
 43 */
 44
 45#include "aic7xxx_osm.h"
 46#include "aic7xxx_inline.h"
 47#include "aic7xxx_93cx6.h"
 48
 49#define ID_AIC7770	0x04907770
 50#define ID_AHA_274x	0x04907771
 51#define ID_AHA_284xB	0x04907756 /* BIOS enabled */
 52#define ID_AHA_284x	0x04907757 /* BIOS disabled*/
 53#define	ID_OLV_274x	0x04907782 /* Olivetti OEM */
 54#define	ID_OLV_274xD	0x04907783 /* Olivetti OEM (Differential) */
 55
 56static int aic7770_chip_init(struct ahc_softc *ahc);
 57static int aha2840_load_seeprom(struct ahc_softc *ahc);
 58static ahc_device_setup_t ahc_aic7770_VL_setup;
 59static ahc_device_setup_t ahc_aic7770_EISA_setup;
 60static ahc_device_setup_t ahc_aic7770_setup;
 61
 62struct aic7770_identity aic7770_ident_table[] =
 63{
 64	{
 65		ID_AHA_274x,
 66		0xFFFFFFFF,
 67		"Adaptec 274X SCSI adapter",
 68		ahc_aic7770_EISA_setup
 69	},
 70	{
 71		ID_AHA_284xB,
 72		0xFFFFFFFE,
 73		"Adaptec 284X SCSI adapter",
 74		ahc_aic7770_VL_setup
 75	},
 76	{
 77		ID_AHA_284x,
 78		0xFFFFFFFE,
 79		"Adaptec 284X SCSI adapter (BIOS Disabled)",
 80		ahc_aic7770_VL_setup
 81	},
 82	{
 83		ID_OLV_274x,
 84		0xFFFFFFFF,
 85		"Adaptec (Olivetti OEM) 274X SCSI adapter",
 86		ahc_aic7770_EISA_setup
 87	},
 88	{
 89		ID_OLV_274xD,
 90		0xFFFFFFFF,
 91		"Adaptec (Olivetti OEM) 274X Differential SCSI adapter",
 92		ahc_aic7770_EISA_setup
 93	},
 94	/* Generic chip probes for devices we don't know 'exactly' */
 95	{
 96		ID_AIC7770,
 97		0xFFFFFFFF,
 98		"Adaptec aic7770 SCSI adapter",
 99		ahc_aic7770_EISA_setup
100	}
101};
102
103int
104aic7770_config(struct ahc_softc *ahc, struct aic7770_identity *entry, u_int io)
105{
106	int	error;
107	int	have_seeprom;
108	u_int	hostconf;
109	u_int   irq;
110	u_int	intdef;
111
112	error = entry->setup(ahc);
113	have_seeprom = 0;
114	if (error != 0)
115		return (error);
116
117	error = aic7770_map_registers(ahc, io);
118	if (error != 0)
119		return (error);
120
121	/*
122	 * Before we continue probing the card, ensure that
123	 * its interrupts are *disabled*.  We don't want
124	 * a misstep to hang the machine in an interrupt
125	 * storm.
126	 */
127	ahc_intr_enable(ahc, FALSE);
128
129	ahc->description = entry->name;
130	error = ahc_softc_init(ahc);
131	if (error != 0)
132		return (error);
133
134	ahc->bus_chip_init = aic7770_chip_init;
135
136	error = ahc_reset(ahc, /*reinit*/FALSE);
137	if (error != 0)
138		return (error);
139
140	/* Make sure we have a valid interrupt vector */
141	intdef = ahc_inb(ahc, INTDEF);
142	irq = intdef & VECTOR;
143	switch (irq) {
144	case 9:
145	case 10:
146	case 11:
147	case 12:
148	case 14:
149	case 15:
150		break;
151	default:
152		printk("aic7770_config: invalid irq setting %d\n", intdef);
153		return (ENXIO);
154	}
155
156	if ((intdef & EDGE_TRIG) != 0)
157		ahc->flags |= AHC_EDGE_INTERRUPT;
158
159	switch (ahc->chip & (AHC_EISA|AHC_VL)) {
160	case AHC_EISA:
161	{
162		u_int biosctrl;
163		u_int scsiconf;
164		u_int scsiconf1;
165
166		biosctrl = ahc_inb(ahc, HA_274_BIOSCTRL);
167		scsiconf = ahc_inb(ahc, SCSICONF);
168		scsiconf1 = ahc_inb(ahc, SCSICONF + 1);
169
170		/* Get the primary channel information */
171		if ((biosctrl & CHANNEL_B_PRIMARY) != 0)
172			ahc->flags |= 1;
173
174		if ((biosctrl & BIOSMODE) == BIOSDISABLED) {
175			ahc->flags |= AHC_USEDEFAULTS;
176		} else {
177			if ((ahc->features & AHC_WIDE) != 0) {
178				ahc->our_id = scsiconf1 & HWSCSIID;
179				if (scsiconf & TERM_ENB)
180					ahc->flags |= AHC_TERM_ENB_A;
181			} else {
182				ahc->our_id = scsiconf & HSCSIID;
183				ahc->our_id_b = scsiconf1 & HSCSIID;
184				if (scsiconf & TERM_ENB)
185					ahc->flags |= AHC_TERM_ENB_A;
186				if (scsiconf1 & TERM_ENB)
187					ahc->flags |= AHC_TERM_ENB_B;
188			}
189		}
190		if ((ahc_inb(ahc, HA_274_BIOSGLOBAL) & HA_274_EXTENDED_TRANS))
191			ahc->flags |= AHC_EXTENDED_TRANS_A|AHC_EXTENDED_TRANS_B;
192		break;
193	}
194	case AHC_VL:
195	{
196		have_seeprom = aha2840_load_seeprom(ahc);
197		break;
198	}
199	default:
200		break;
201	}
202	if (have_seeprom == 0) {
203		kfree(ahc->seep_config);
204		ahc->seep_config = NULL;
205	}
206
207	/*
208	 * Ensure autoflush is enabled
209	 */
210	ahc_outb(ahc, SBLKCTL, ahc_inb(ahc, SBLKCTL) & ~AUTOFLUSHDIS);
211
212	/* Setup the FIFO threshold and the bus off time */
213	hostconf = ahc_inb(ahc, HOSTCONF);
214	ahc_outb(ahc, BUSSPD, hostconf & DFTHRSH);
215	ahc_outb(ahc, BUSTIME, (hostconf << 2) & BOFF);
216
217	ahc->bus_softc.aic7770_softc.busspd = hostconf & DFTHRSH;
218	ahc->bus_softc.aic7770_softc.bustime = (hostconf << 2) & BOFF;
219
220	/*
221	 * Generic aic7xxx initialization.
222	 */
223	error = ahc_init(ahc);
224	if (error != 0)
225		return (error);
226
227	error = aic7770_map_int(ahc, irq);
228	if (error != 0)
229		return (error);
230
231	ahc->init_level++;
232
233	/*
234	 * Enable the board's BUS drivers
235	 */
236	ahc_outb(ahc, BCTL, ENABLE);
237	return (0);
238}
239
240static int
241aic7770_chip_init(struct ahc_softc *ahc)
242{
243	ahc_outb(ahc, BUSSPD, ahc->bus_softc.aic7770_softc.busspd);
244	ahc_outb(ahc, BUSTIME, ahc->bus_softc.aic7770_softc.bustime);
245	ahc_outb(ahc, SBLKCTL, ahc_inb(ahc, SBLKCTL) & ~AUTOFLUSHDIS);
246	ahc_outb(ahc, BCTL, ENABLE);
247	return (ahc_chip_init(ahc));
248}
249
250/*
251 * Read the 284x SEEPROM.
252 */
253static int
254aha2840_load_seeprom(struct ahc_softc *ahc)
255{
256	struct	seeprom_descriptor sd;
257	struct	seeprom_config *sc;
258	int	have_seeprom;
259	uint8_t scsi_conf;
260
261	sd.sd_ahc = ahc;
262	sd.sd_control_offset = SEECTL_2840;
263	sd.sd_status_offset = STATUS_2840;
264	sd.sd_dataout_offset = STATUS_2840;		
265	sd.sd_chip = C46;
266	sd.sd_MS = 0;
267	sd.sd_RDY = EEPROM_TF;
268	sd.sd_CS = CS_2840;
269	sd.sd_CK = CK_2840;
270	sd.sd_DO = DO_2840;
271	sd.sd_DI = DI_2840;
272	sc = ahc->seep_config;
273
274	if (bootverbose)
275		printk("%s: Reading SEEPROM...", ahc_name(ahc));
276	have_seeprom = ahc_read_seeprom(&sd, (uint16_t *)sc,
277					/*start_addr*/0, sizeof(*sc)/2);
278
279	if (have_seeprom) {
280
281		if (ahc_verify_cksum(sc) == 0) {
282			if(bootverbose)
283				printk ("checksum error\n");
284			have_seeprom = 0;
285		} else if (bootverbose) {
286			printk("done.\n");
287		}
288	}
289
290	if (!have_seeprom) {
291		if (bootverbose)
292			printk("%s: No SEEPROM available\n", ahc_name(ahc));
293		ahc->flags |= AHC_USEDEFAULTS;
294	} else {
295		/*
296		 * Put the data we've collected down into SRAM
297		 * where ahc_init will find it.
298		 */
299		int	 i;
300		int	 max_targ;
301		uint16_t discenable;
302
303		max_targ = (ahc->features & AHC_WIDE) != 0 ? 16 : 8;
304		discenable = 0;
305		for (i = 0; i < max_targ; i++){
306			uint8_t target_settings;
307
308			target_settings = (sc->device_flags[i] & CFXFER) << 4;
309			if (sc->device_flags[i] & CFSYNCH)
310				target_settings |= SOFS;
311			if (sc->device_flags[i] & CFWIDEB)
312				target_settings |= WIDEXFER;
313			if (sc->device_flags[i] & CFDISC)
314				discenable |= (0x01 << i);
315			ahc_outb(ahc, TARG_SCSIRATE + i, target_settings);
316		}
317		ahc_outb(ahc, DISC_DSB, ~(discenable & 0xff));
318		ahc_outb(ahc, DISC_DSB + 1, ~((discenable >> 8) & 0xff));
319
320		ahc->our_id = sc->brtime_id & CFSCSIID;
321
322		scsi_conf = (ahc->our_id & 0x7);
323		if (sc->adapter_control & CFSPARITY)
324			scsi_conf |= ENSPCHK;
325		if (sc->adapter_control & CFRESETB)
326			scsi_conf |= RESET_SCSI;
327
328		if (sc->bios_control & CF284XEXTEND)		
329			ahc->flags |= AHC_EXTENDED_TRANS_A;
330		/* Set SCSICONF info */
331		ahc_outb(ahc, SCSICONF, scsi_conf);
332
333		if (sc->adapter_control & CF284XSTERM)
334			ahc->flags |= AHC_TERM_ENB_A;
335	}
336	return (have_seeprom);
337}
338
339static int
340ahc_aic7770_VL_setup(struct ahc_softc *ahc)
341{
342	int error;
343
344	error = ahc_aic7770_setup(ahc);
345	ahc->chip |= AHC_VL;
346	return (error);
347}
348
349static int
350ahc_aic7770_EISA_setup(struct ahc_softc *ahc)
351{
352	int error;
353
354	error = ahc_aic7770_setup(ahc);
355	ahc->chip |= AHC_EISA;
356	return (error);
357}
358
359static int
360ahc_aic7770_setup(struct ahc_softc *ahc)
361{
362	ahc->channel = 'A';
363	ahc->channel_b = 'B';
364	ahc->chip = AHC_AIC7770;
365	ahc->features = AHC_AIC7770_FE;
366	ahc->bugs |= AHC_TMODE_WIDEODD_BUG;
367	ahc->flags |= AHC_PAGESCBS;
368	ahc->instruction_ram_size = 448;
369	return (0);
370}