129949e86Sstevel /*
229949e86Sstevel * CDDL HEADER START
329949e86Sstevel *
429949e86Sstevel * The contents of this file are subject to the terms of the
529949e86Sstevel * Common Development and Distribution License (the "License").
629949e86Sstevel * You may not use this file except in compliance with the License.
729949e86Sstevel *
829949e86Sstevel * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
929949e86Sstevel * or http://www.opensolaris.org/os/licensing.
1029949e86Sstevel * See the License for the specific language governing permissions
1129949e86Sstevel * and limitations under the License.
1229949e86Sstevel *
1329949e86Sstevel * When distributing Covered Code, include this CDDL HEADER in each
1429949e86Sstevel * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
1529949e86Sstevel * If applicable, add the following below this CDDL HEADER, with the
1629949e86Sstevel * fields enclosed by brackets "[]" replaced with your own identifying
1729949e86Sstevel * information: Portions Copyright [yyyy] [name of copyright owner]
1829949e86Sstevel *
1929949e86Sstevel * CDDL HEADER END
2029949e86Sstevel */
2129949e86Sstevel
2229949e86Sstevel /*
2307d06da5SSurya Prakki * Copyright 2009 Sun Microsystems, Inc. All rights reserved.
2429949e86Sstevel * Use is subject to license terms.
25*89b43686SBayard Bell * Copyright (c) 2011 Bayard G. Bell. All rights reserved.
2629949e86Sstevel */
2729949e86Sstevel
2829949e86Sstevel
2929949e86Sstevel #include <sys/types.h>
3029949e86Sstevel #include <sys/conf.h>
3129949e86Sstevel #include <sys/ddi.h>
3229949e86Sstevel #include <sys/sunddi.h>
3329949e86Sstevel #include <sys/ddi_impldefs.h>
3429949e86Sstevel #include <sys/obpdefs.h>
3529949e86Sstevel #include <sys/cmn_err.h>
3629949e86Sstevel #include <sys/errno.h>
3729949e86Sstevel #include <sys/kmem.h>
3829949e86Sstevel #include <sys/debug.h>
3929949e86Sstevel #include <sys/sysmacros.h>
4029949e86Sstevel #include <sys/ivintr.h>
4129949e86Sstevel #include <sys/intr.h>
4229949e86Sstevel #include <sys/intreg.h>
4329949e86Sstevel #include <sys/autoconf.h>
4429949e86Sstevel #include <sys/modctl.h>
4529949e86Sstevel #include <sys/spl.h>
4629949e86Sstevel
4729949e86Sstevel #include <sys/fhc.h>
4829949e86Sstevel #include <sys/simmstat.h>
4929949e86Sstevel
5029949e86Sstevel /* Useful debugging Stuff */
5129949e86Sstevel #include <sys/nexusdebug.h>
5229949e86Sstevel
5329949e86Sstevel /*
5429949e86Sstevel * Function prototypes
5529949e86Sstevel */
5629949e86Sstevel
5729949e86Sstevel static int simmstat_attach(dev_info_t *, ddi_attach_cmd_t);
5829949e86Sstevel
5929949e86Sstevel static int simmstat_detach(dev_info_t *, ddi_detach_cmd_t);
6029949e86Sstevel
6129949e86Sstevel static void simmstat_add_kstats(struct simmstat_soft_state *);
6229949e86Sstevel
6329949e86Sstevel static int simmstat_kstat_update(kstat_t *, int);
6429949e86Sstevel
6529949e86Sstevel /*
6629949e86Sstevel * Configuration data structures
6729949e86Sstevel */
6829949e86Sstevel static struct cb_ops simmstat_cb_ops = {
6929949e86Sstevel nulldev, /* open */
7029949e86Sstevel nulldev, /* close */
7129949e86Sstevel nulldev, /* strategy */
7229949e86Sstevel nulldev, /* print */
7329949e86Sstevel nodev, /* dump */
7429949e86Sstevel nulldev, /* read */
7529949e86Sstevel nulldev, /* write */
7629949e86Sstevel nulldev, /* ioctl */
7729949e86Sstevel nodev, /* devmap */
7829949e86Sstevel nodev, /* mmap */
7929949e86Sstevel nodev, /* segmap */
8029949e86Sstevel nochpoll, /* poll */
8129949e86Sstevel ddi_prop_op, /* cb_prop_op */
8229949e86Sstevel 0, /* streamtab */
8329949e86Sstevel D_MP | D_NEW | D_HOTPLUG, /* Driver compatibility flag */
8429949e86Sstevel CB_REV, /* rev */
8529949e86Sstevel nodev, /* cb_aread */
8629949e86Sstevel nodev /* cb_awrite */
8729949e86Sstevel };
8829949e86Sstevel
8929949e86Sstevel static struct dev_ops simmstat_ops = {
9029949e86Sstevel DEVO_REV, /* rev */
9129949e86Sstevel 0, /* refcnt */
9229949e86Sstevel ddi_no_info, /* getinfo */
9329949e86Sstevel nulldev, /* identify */
9429949e86Sstevel nulldev, /* probe */
9529949e86Sstevel simmstat_attach, /* attach */
9629949e86Sstevel simmstat_detach, /* detach */
9729949e86Sstevel nulldev, /* reset */
9829949e86Sstevel &simmstat_cb_ops, /* cb_ops */
9929949e86Sstevel (struct bus_ops *)0, /* bus_ops */
10019397407SSherry Moore nulldev, /* power */
10119397407SSherry Moore ddi_quiesce_not_needed, /* quiesce */
10229949e86Sstevel };
10329949e86Sstevel
10429949e86Sstevel static uint_t simmstat_reg_read_delay_us = 10;
10529949e86Sstevel
10629949e86Sstevel /*
10729949e86Sstevel * Driver globals
10829949e86Sstevel */
10929949e86Sstevel void *simmstatp;
11029949e86Sstevel
11129949e86Sstevel extern struct mod_ops mod_driverops;
11229949e86Sstevel
11329949e86Sstevel static struct modldrv modldrv = {
11429949e86Sstevel &mod_driverops, /* module type, this one is a driver */
11519397407SSherry Moore "SIMM-status Leaf", /* module name */
11629949e86Sstevel &simmstat_ops, /* driver ops */
11729949e86Sstevel };
11829949e86Sstevel
11929949e86Sstevel static struct modlinkage modlinkage = {
12029949e86Sstevel MODREV_1, /* rev */
12129949e86Sstevel (void *)&modldrv,
12229949e86Sstevel NULL
12329949e86Sstevel };
12429949e86Sstevel
12529949e86Sstevel /*
12629949e86Sstevel * These are the module initialization routines.
12729949e86Sstevel */
12829949e86Sstevel
12929949e86Sstevel int
_init(void)13029949e86Sstevel _init(void)
13129949e86Sstevel {
13229949e86Sstevel int error;
13329949e86Sstevel
13429949e86Sstevel if ((error = ddi_soft_state_init(&simmstatp,
13529949e86Sstevel sizeof (struct simmstat_soft_state), 1)) != 0)
13629949e86Sstevel return (error);
13729949e86Sstevel
13829949e86Sstevel return (mod_install(&modlinkage));
13929949e86Sstevel }
14029949e86Sstevel
14129949e86Sstevel int
_fini(void)14229949e86Sstevel _fini(void)
14329949e86Sstevel {
14429949e86Sstevel int error;
14529949e86Sstevel
14629949e86Sstevel if ((error = mod_remove(&modlinkage)) != 0)
14729949e86Sstevel return (error);
14829949e86Sstevel
14929949e86Sstevel ddi_soft_state_fini(&simmstatp);
15029949e86Sstevel return (0);
15129949e86Sstevel }
15229949e86Sstevel
15329949e86Sstevel int
_info(struct modinfo * modinfop)15429949e86Sstevel _info(struct modinfo *modinfop)
15529949e86Sstevel {
15629949e86Sstevel return (mod_info(&modlinkage, modinfop));
15729949e86Sstevel }
15829949e86Sstevel
15929949e86Sstevel static int
simmstat_attach(dev_info_t * devi,ddi_attach_cmd_t cmd)16029949e86Sstevel simmstat_attach(dev_info_t *devi, ddi_attach_cmd_t cmd)
16129949e86Sstevel {
16229949e86Sstevel struct simmstat_soft_state *softsp;
16329949e86Sstevel int instance;
16429949e86Sstevel
16529949e86Sstevel switch (cmd) {
16629949e86Sstevel case DDI_ATTACH:
16729949e86Sstevel break;
16829949e86Sstevel
16929949e86Sstevel case DDI_RESUME:
17029949e86Sstevel return (DDI_SUCCESS);
17129949e86Sstevel
17229949e86Sstevel default:
17329949e86Sstevel return (DDI_FAILURE);
17429949e86Sstevel }
17529949e86Sstevel
17629949e86Sstevel instance = ddi_get_instance(devi);
17729949e86Sstevel
17829949e86Sstevel if (ddi_soft_state_zalloc(simmstatp, instance) != DDI_SUCCESS)
17929949e86Sstevel return (DDI_FAILURE);
18029949e86Sstevel
18129949e86Sstevel softsp = ddi_get_soft_state(simmstatp, instance);
18229949e86Sstevel
18329949e86Sstevel /* Set the dip in the soft state */
18429949e86Sstevel softsp->dip = devi;
18529949e86Sstevel
18629949e86Sstevel /* Get the board number from this nodes parent device. */
18729949e86Sstevel softsp->pdip = ddi_get_parent(softsp->dip);
18829949e86Sstevel if ((softsp->board = (int)ddi_getprop(DDI_DEV_T_ANY, softsp->pdip,
18929949e86Sstevel DDI_PROP_DONTPASS, OBP_BOARDNUM, -1)) == -1) {
19029949e86Sstevel cmn_err(CE_WARN, "simmstat%d: unable to retrieve %s property",
19129949e86Sstevel instance, OBP_BOARDNUM);
19229949e86Sstevel goto bad;
19329949e86Sstevel }
19429949e86Sstevel
19529949e86Sstevel DPRINTF(SIMMSTAT_ATTACH_DEBUG, ("simmstat%d: devi= 0x%p\n, "
19607d06da5SSurya Prakki " softsp=0x%p\n", instance, (void *)devi, (void *)softsp));
19729949e86Sstevel
19829949e86Sstevel /* map in the registers for this device. */
19929949e86Sstevel if (ddi_map_regs(softsp->dip, 0,
20029949e86Sstevel (caddr_t *)&softsp->simmstat_base, 0, 0)) {
20129949e86Sstevel cmn_err(CE_WARN, "simmstat%d: unable to map registers",
20229949e86Sstevel instance);
20329949e86Sstevel goto bad;
20429949e86Sstevel }
20529949e86Sstevel
20629949e86Sstevel /* nothing to suspend/resume here */
20729949e86Sstevel (void) ddi_prop_update_string(DDI_DEV_T_NONE, devi,
20829949e86Sstevel "pm-hardware-state", "no-suspend-resume");
20929949e86Sstevel
21029949e86Sstevel /* create the kstats for this device */
21129949e86Sstevel simmstat_add_kstats(softsp);
21229949e86Sstevel
21329949e86Sstevel ddi_report_dev(devi);
21429949e86Sstevel
21529949e86Sstevel return (DDI_SUCCESS);
21629949e86Sstevel
21729949e86Sstevel bad:
21829949e86Sstevel ddi_soft_state_free(simmstatp, instance);
21929949e86Sstevel return (DDI_FAILURE);
22029949e86Sstevel }
22129949e86Sstevel
22229949e86Sstevel /* ARGSUSED */
22329949e86Sstevel static int
simmstat_detach(dev_info_t * devi,ddi_detach_cmd_t cmd)22429949e86Sstevel simmstat_detach(dev_info_t *devi, ddi_detach_cmd_t cmd)
22529949e86Sstevel {
22629949e86Sstevel int instance;
22729949e86Sstevel struct simmstat_soft_state *softsp;
22829949e86Sstevel
22929949e86Sstevel /* get the instance of this devi */
23029949e86Sstevel instance = ddi_get_instance(devi);
23129949e86Sstevel
23229949e86Sstevel /* get the soft state pointer for this device node */
23329949e86Sstevel softsp = ddi_get_soft_state(simmstatp, instance);
23429949e86Sstevel
23529949e86Sstevel switch (cmd) {
23629949e86Sstevel case DDI_SUSPEND:
23729949e86Sstevel return (DDI_SUCCESS);
23829949e86Sstevel
23929949e86Sstevel case DDI_DETACH:
24029949e86Sstevel (void) fhc_bdlist_lock(softsp->board);
24129949e86Sstevel if (fhc_bd_detachable(softsp->board))
24229949e86Sstevel break;
24329949e86Sstevel else
24429949e86Sstevel fhc_bdlist_unlock();
24529949e86Sstevel /* FALLTHROUGH */
24629949e86Sstevel
24729949e86Sstevel default:
24829949e86Sstevel return (DDI_FAILURE);
24929949e86Sstevel }
25029949e86Sstevel
25129949e86Sstevel fhc_bdlist_unlock();
25229949e86Sstevel
25329949e86Sstevel /* remove the kstat for this board */
25429949e86Sstevel kstat_delete(softsp->simmstat_ksp);
25529949e86Sstevel
25629949e86Sstevel /* unmap the registers */
25729949e86Sstevel ddi_unmap_regs(softsp->dip, 0,
25829949e86Sstevel (caddr_t *)&softsp->simmstat_base, 0, 0);
25929949e86Sstevel
26029949e86Sstevel /* free up the soft state */
26129949e86Sstevel ddi_soft_state_free(simmstatp, instance);
26229949e86Sstevel ddi_prop_remove_all(devi);
26329949e86Sstevel
26429949e86Sstevel return (DDI_SUCCESS);
26529949e86Sstevel }
26629949e86Sstevel
26729949e86Sstevel static void
simmstat_add_kstats(struct simmstat_soft_state * softsp)26829949e86Sstevel simmstat_add_kstats(struct simmstat_soft_state *softsp)
26929949e86Sstevel {
27029949e86Sstevel struct kstat *simmstat_ksp;
27129949e86Sstevel
27229949e86Sstevel if ((simmstat_ksp = kstat_create("unix", softsp->board,
27329949e86Sstevel SIMMSTAT_KSTAT_NAME, "misc", KSTAT_TYPE_RAW,
27429949e86Sstevel SIMM_COUNT, KSTAT_FLAG_PERSISTENT)) == NULL) {
27529949e86Sstevel cmn_err(CE_WARN, "simmstat%d: kstat_create failed",
27629949e86Sstevel ddi_get_instance(softsp->dip));
27729949e86Sstevel }
27829949e86Sstevel
27929949e86Sstevel simmstat_ksp->ks_update = simmstat_kstat_update;
28029949e86Sstevel simmstat_ksp->ks_private = (void *)softsp;
28129949e86Sstevel softsp->simmstat_ksp = simmstat_ksp;
28229949e86Sstevel kstat_install(simmstat_ksp);
28329949e86Sstevel }
28429949e86Sstevel
28529949e86Sstevel /*
28629949e86Sstevel * Kstats only need ks_update functions when they change dynamically
28729949e86Sstevel * at run time.
28829949e86Sstevel * In the case of the simmstat registers, they contain battery
28929949e86Sstevel * information for NVSIMMs. These need to be updated whenever a
29029949e86Sstevel * kstat_read asks for the data. There is currently no plan to
29129949e86Sstevel * ship NVSIMMs on this platform, but this support must be present.
29229949e86Sstevel */
29329949e86Sstevel
29429949e86Sstevel static int
simmstat_kstat_update(kstat_t * ksp,int rw)29529949e86Sstevel simmstat_kstat_update(kstat_t *ksp, int rw)
29629949e86Sstevel {
29729949e86Sstevel struct simmstat_soft_state *softsp;
29829949e86Sstevel volatile char *statp; /* pointer to hardware register */
29929949e86Sstevel char *kstatp; /* pointer to kstat data buffer */
30029949e86Sstevel int i;
30129949e86Sstevel
30229949e86Sstevel kstatp = (char *)ksp->ks_data;
30329949e86Sstevel softsp = (struct simmstat_soft_state *)ksp->ks_private;
30429949e86Sstevel
30529949e86Sstevel statp = (char *)softsp->simmstat_base;
30629949e86Sstevel
30729949e86Sstevel /* this is a read-only kstat. Bail out on a write */
30829949e86Sstevel if (rw == KSTAT_WRITE) {
30929949e86Sstevel return (EACCES);
31029949e86Sstevel } else {
31129949e86Sstevel
31229949e86Sstevel /*
31329949e86Sstevel * copy current status of hardware into the kstat
31429949e86Sstevel * structure.
31529949e86Sstevel */
31629949e86Sstevel for (i = 0; i < SIMM_COUNT; i++, statp++, kstatp++) {
31729949e86Sstevel *kstatp = *statp;
31829949e86Sstevel DELAY(simmstat_reg_read_delay_us);
31929949e86Sstevel }
32029949e86Sstevel }
32129949e86Sstevel return (0);
32229949e86Sstevel }
323