1/*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License, Version 1.0 only
6 * (the "License").  You may not use this file except in compliance
7 * with the License.
8 *
9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10 * or http://www.opensolaris.org/os/licensing.
11 * See the License for the specific language governing permissions
12 * and limitations under the License.
13 *
14 * When distributing Covered Code, include this CDDL HEADER in each
15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16 * If applicable, add the following below this CDDL HEADER, with the
17 * fields enclosed by brackets "[]" replaced with your own identifying
18 * information: Portions Copyright [yyyy] [name of copyright owner]
19 *
20 * CDDL HEADER END
21 */
22/*
23 * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
24 * Use is subject to license terms.
25 */
26
27#pragma ident	"%Z%%M%	%I%	%E% SMI"
28
29#include <sys/param.h>
30#include <sys/systm.h>
31#include <sys/sysmacros.h>
32#include <sys/sunddi.h>
33#include <sys/esunddi.h>
34#include <sys/sunndi.h>
35#include <sys/conf.h>
36
37#include <sys/platform_module.h>
38#include <sys/errno.h>
39
40#include <sys/sunldi.h>
41#include <sys/file.h>
42
43#define	SHARED_PCF8584_PATH "/pci@8,700000/ebus@5/i2c@1,2e/nvram@0,a0"
44static dev_info_t *shared_pcf8584_dip;
45static kmutex_t excal_pcf8584_mutex;
46
47int (*p2get_mem_unum)(int, uint64_t, char *, int, int *);
48
49/*
50 * Excalibur fan information
51 */
52typedef struct xcalfan_info {
53	char		*pathname;
54	int8_t		val8;
55	ldi_handle_t	lh;
56} xcalfan_info_t;
57
58static xcalfan_info_t xcalfans[] = {
59	{"/pci@8,700000/ebus@5/i2c@1,30/fan-control@0,48:2", 63, NULL},
60	{"/pci@8,700000/ebus@5/i2c@1,30/fan-control@0,48:0", 63, NULL},
61	{"/pci@8,700000/ebus@5/i2c@1,30/fan-control@0,48:4", 31, NULL}
62};
63
64#define	NFANS	(sizeof (xcalfans) / sizeof (xcalfans[0]))
65
66void
67startup_platform(void)
68{
69	mutex_init(&excal_pcf8584_mutex, NULL, NULL, NULL);
70}
71
72int
73set_platform_tsb_spares()
74{
75	return (0);
76}
77
78void
79set_platform_defaults(void)
80{
81}
82
83void
84load_platform_drivers(void)
85{
86	ldi_ident_t	li;
87	dev_info_t	*dip;
88	char		**drv;
89	int		i, err;
90
91	static char *boot_time_drivers[] = {
92		"todds1287",
93		"us",
94		"mc-us3",
95		"bbc_beep",
96		"max1617",
97		"tda8444",
98		"seeprom",
99		NULL
100	};
101
102	for (drv = boot_time_drivers; *drv; drv++) {
103		if ((i_ddi_attach_hw_nodes(*drv) != DDI_SUCCESS) &&
104		    (strcmp(*drv, "us") != 0))
105			/*
106			 * It is OK if 'us' driver doesn't load. It's
107			 * not available in Core cluster.
108			 */
109			cmn_err(CE_WARN, "Failed to install \"%s\" driver.",
110			    *drv);
111	}
112
113	/*
114	 * mc-us3 must stay loaded for plat_get_mem_unum()
115	 */
116	(void) ddi_hold_driver(ddi_name_to_major("mc-us3"));
117
118	/*
119	 * Figure out which pcf8584_dip is shared with OBP for the nvram
120	 * device, so the lock can be acquired.
121	 *
122	 * This should really be done elsewhere, like startup_platform, but
123	 * that runs before the devinfo tree is setup with configure().
124	 * So it is here until there is a better place.
125	 */
126	dip = e_ddi_hold_devi_by_path(SHARED_PCF8584_PATH, 0);
127
128	ASSERT(dip != NULL);
129	shared_pcf8584_dip = ddi_get_parent(dip);
130
131	ndi_hold_devi(shared_pcf8584_dip);
132	ndi_rele_devi(dip);
133
134	li = ldi_ident_from_anon();
135	for (i = 0; i < NFANS; ++i) {
136		err = ldi_open_by_name(xcalfans[i].pathname,
137		    FWRITE, kcred, &xcalfans[i].lh, li);
138
139		if (err != 0) {
140			cmn_err(CE_WARN, "plat_fan_blast: "
141			    "Failed to get fan device handle for %s",
142			    xcalfans[i].pathname);
143			continue;
144		}
145	}
146	ldi_ident_release(li);
147}
148
149/*ARGSUSED*/
150int
151plat_cpu_poweron(struct cpu *cp)
152{
153	return (ENOTSUP);	/* not supported on this platform */
154}
155
156/*ARGSUSED*/
157int
158plat_cpu_poweroff(struct cpu *cp)
159{
160	return (ENOTSUP);	/* not supported on this platform */
161}
162
163/*ARGSUSED*/
164void
165plat_freelist_process(int mnode)
166{
167}
168
169char *platform_module_list[] = {
170	"schppm",	/* must attach before xcalppm */
171	"xcalppm",
172	(char *)0
173};
174
175/*ARGSUSED*/
176void
177plat_tod_fault(enum tod_fault_type tod_bad)
178{
179}
180
181/*ARGSUSED*/
182int
183plat_get_mem_unum(int synd_code, uint64_t flt_addr, int flt_bus_id,
184    int flt_in_memory, ushort_t flt_status, char *buf, int buflen, int *lenp)
185{
186	if (flt_in_memory && (p2get_mem_unum != NULL))
187		return (p2get_mem_unum(synd_code, P2ALIGN(flt_addr, 8),
188			buf, buflen, lenp));
189	else
190		return (ENOTSUP);
191}
192
193int
194plat_get_cpu_unum(int cpuid, char *buf, int buflen, int *lenp)
195{
196	if (snprintf(buf, buflen, "Slot %d", cpuid) >= buflen) {
197		return (ENOSPC);
198	} else {
199		*lenp = strlen(buf);
200		return (0);
201	}
202}
203
204/*
205 * Unfortunately, excal's BBC pcf8584 controller is used by both OBP
206 * and the OS's i2c drivers.  The 'eeprom' command executes
207 * OBP code to handle property requests.  If eeprom didn't do this, or if the
208 * controllers were partitioned so that all devices on a given controller were
209 * driven by either OBP or the OS, this wouldn't be necessary.
210 *
211 * Note that getprop doesn't have the same issue as it reads from cached
212 * memory in OBP.
213 */
214
215/*
216 * Common locking enter code
217 */
218void
219plat_setprop_enter(void)
220{
221	mutex_enter(&excal_pcf8584_mutex);
222}
223
224/*
225 * Common locking exit code
226 */
227void
228plat_setprop_exit(void)
229{
230	mutex_exit(&excal_pcf8584_mutex);
231}
232
233/*
234 * Called by pcf8584 driver
235 */
236void
237plat_shared_i2c_enter(dev_info_t *dip)
238{
239	if (dip == shared_pcf8584_dip) {
240		plat_setprop_enter();
241	}
242}
243
244/*
245 * Called by pcf8584 driver
246 */
247void
248plat_shared_i2c_exit(dev_info_t *dip)
249{
250	if (dip == shared_pcf8584_dip) {
251		plat_setprop_exit();
252	}
253}
254
255/*
256 * Set platform fans to maximum speed
257 */
258void
259plat_fan_blast(void)
260{
261	struct uio	uio;
262	struct iovec	iov;
263	int8_t		fv;
264	int		err;
265	int		i;
266
267	for (i = 0; i < NFANS; ++i) {
268		fv = xcalfans[i].val8;
269		bzero(&uio, sizeof (uio));
270		bzero(&iov, sizeof (iov));
271		iov.iov_base = &fv;
272		iov.iov_len = sizeof (fv);
273		uio.uio_iov = &iov;
274		uio.uio_iovcnt = 1;
275		uio.uio_loffset = 0;
276		uio.uio_segflg = UIO_SYSSPACE;
277		uio.uio_resid = sizeof (fv);
278
279		err = ldi_write(xcalfans[i].lh, &uio, kcred);
280		if (err != 0) {
281			if (err == EAGAIN) {
282				cmn_err(CE_WARN, "!plat_fan_blast: Cannot "
283				    "write %d to %s now, try again later.",
284				    xcalfans[i].val8, xcalfans[i].pathname);
285			} else {
286				cmn_err(CE_WARN, "plat_fan_blast: "
287				    "Error %d while writing %d to %s.", err,
288				    xcalfans[i].val8, xcalfans[i].pathname);
289			}
290		}
291	}
292}
293