/* * CDDL HEADER START * * The contents of this file are subject to the terms of the * Common Development and Distribution License (the "License"). * You may not use this file except in compliance with the License. * * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE * or http://www.opensolaris.org/os/licensing. * See the License for the specific language governing permissions * and limitations under the License. * * When distributing Covered Code, include this CDDL HEADER in each * file and include the License file at usr/src/OPENSOLARIS.LICENSE. * If applicable, add the following below this CDDL HEADER, with the * fields enclosed by brackets "[]" replaced with your own identifying * information: Portions Copyright [yyyy] [name of copyright owner] * * CDDL HEADER END */ /* * Copyright 2006 Sun Microsystems, Inc. All rights reserved. * Use is subject to license terms. */ #pragma ident "%Z%%M% %I% %E% SMI" /* * Logical domain channel devices are devices implemented entirely * in software; cnex is the nexus for channel-devices. They use * the HV channel interfaces via the LDC transport module to send * and receive data and to register callbacks. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include /* * Internal functions/information */ static struct cnex_pil_map cnex_class_to_pil[] = { {LDC_DEV_GENERIC, PIL_3}, {LDC_DEV_BLK, PIL_4}, {LDC_DEV_BLK_SVC, PIL_3}, {LDC_DEV_NT, PIL_6}, {LDC_DEV_NT_SVC, PIL_4}, {LDC_DEV_SERIAL, PIL_6} }; #define CNEX_MAX_DEVS (sizeof (cnex_class_to_pil) / \ sizeof (cnex_class_to_pil[0])) #define SUN4V_REG_SPEC2CFG_HDL(x) ((x >> 32) & ~(0xfull << 28)) static clock_t cnex_wait_usecs = 1000; /* wait time in usecs */ static hrtime_t cnex_pending_tmout = 2ull * NANOSEC; /* 2 secs in nsecs */ static void *cnex_state; static void cnex_intr_redist(void *arg); static uint_t cnex_intr_wrapper(caddr_t arg); /* * Debug info */ #ifdef DEBUG /* * Print debug messages * * set cnexdbg to 0xf for enabling all msgs * 0x8 - Errors * 0x4 - Warnings * 0x2 - All debug messages * 0x1 - Minimal debug messages */ int cnexdbg = 0x8; static void cnexdebug(const char *fmt, ...) { char buf[512]; va_list ap; va_start(ap, fmt); (void) vsprintf(buf, fmt, ap); va_end(ap); cmn_err(CE_CONT, "%s\n", buf); } #define D1 \ if (cnexdbg & 0x01) \ cnexdebug #define D2 \ if (cnexdbg & 0x02) \ cnexdebug #define DWARN \ if (cnexdbg & 0x04) \ cnexdebug #define DERR \ if (cnexdbg & 0x08) \ cnexdebug #else #define D1 #define D2 #define DWARN #define DERR #endif /* * Config information */ static int cnex_attach(dev_info_t *, ddi_attach_cmd_t); static int cnex_detach(dev_info_t *, ddi_detach_cmd_t); static int cnex_open(dev_t *, int, int, cred_t *); static int cnex_close(dev_t, int, int, cred_t *); static int cnex_ioctl(dev_t, int, intptr_t, int, cred_t *, int *); static int cnex_ctl(dev_info_t *, dev_info_t *, ddi_ctl_enum_t, void *, void *); static struct bus_ops cnex_bus_ops = { BUSO_REV, nullbusmap, /* bus_map */ NULL, /* bus_get_intrspec */ NULL, /* bus_add_intrspec */ NULL, /* bus_remove_intrspec */ i_ddi_map_fault, /* bus_map_fault */ ddi_no_dma_map, /* bus_dma_map */ ddi_no_dma_allochdl, /* bus_dma_allochdl */ NULL, /* bus_dma_freehdl */ NULL, /* bus_dma_bindhdl */ NULL, /* bus_dma_unbindhdl */ NULL, /* bus_dma_flush */ NULL, /* bus_dma_win */ NULL, /* bus_dma_ctl */ cnex_ctl, /* bus_ctl */ ddi_bus_prop_op, /* bus_prop_op */ 0, /* bus_get_eventcookie */ 0, /* bus_add_eventcall */ 0, /* bus_remove_eventcall */ 0, /* bus_post_event */ NULL, /* bus_intr_ctl */ NULL, /* bus_config */ NULL, /* bus_unconfig */ NULL, /* bus_fm_init */ NULL, /* bus_fm_fini */ NULL, /* bus_fm_access_enter */ NULL, /* bus_fm_access_exit */ NULL, /* bus_power */ NULL /* bus_intr_op */ }; static struct cb_ops cnex_cb_ops = { cnex_open, /* open */ cnex_close, /* close */ nodev, /* strategy */ nodev, /* print */ nodev, /* dump */ nodev, /* read */ nodev, /* write */ cnex_ioctl, /* ioctl */ nodev, /* devmap */ nodev, /* mmap */ nodev, /* segmap */ nochpoll, /* poll */ ddi_prop_op, /* cb_prop_op */ 0, /* streamtab */ D_MP | D_NEW | D_HOTPLUG /* Driver compatibility flag */ }; static struct dev_ops cnex_ops = { DEVO_REV, /* devo_rev, */ 0, /* refcnt */ ddi_getinfo_1to1, /* info */ nulldev, /* identify */ nulldev, /* probe */ cnex_attach, /* attach */ cnex_detach, /* detach */ nodev, /* reset */ &cnex_cb_ops, /* driver operations */ &cnex_bus_ops, /* bus operations */ nulldev /* power */ }; /* * Module linkage information for the kernel. */ static struct modldrv modldrv = { &mod_driverops, "sun4v channel-devices nexus driver v%I%", &cnex_ops, }; static struct modlinkage modlinkage = { MODREV_1, (void *)&modldrv, NULL }; int _init(void) { int err; if ((err = ddi_soft_state_init(&cnex_state, sizeof (cnex_soft_state_t), 0)) != 0) { return (err); } if ((err = mod_install(&modlinkage)) != 0) { ddi_soft_state_fini(&cnex_state); return (err); } return (0); } int _fini(void) { int err; if ((err = mod_remove(&modlinkage)) != 0) return (err); ddi_soft_state_fini(&cnex_state); return (0); } int _info(struct modinfo *modinfop) { return (mod_info(&modlinkage, modinfop)); } /* * Callback function invoked by the interrupt redistribution * framework. This will redirect interrupts at CPUs that are * currently available in the system. */ static void cnex_intr_redist(void *arg) { cnex_ldc_t *cldcp; cnex_soft_state_t *cnex_ssp = arg; int intr_state; hrtime_t start; uint64_t cpuid; int rv; ASSERT(cnex_ssp != NULL); mutex_enter(&cnex_ssp->clist_lock); cldcp = cnex_ssp->clist; while (cldcp != NULL) { mutex_enter(&cldcp->lock); if (cldcp->tx.hdlr) { /* * Don't do anything for disabled interrupts. */ rv = hvldc_intr_getvalid(cnex_ssp->cfghdl, cldcp->tx.ino, &intr_state); if (rv) { DWARN("cnex_intr_redist: tx ino=0x%llx, " "can't get valid\n", cldcp->tx.ino); mutex_exit(&cldcp->lock); mutex_exit(&cnex_ssp->clist_lock); return; } if (intr_state == HV_INTR_NOTVALID) { mutex_exit(&cldcp->lock); cldcp = cldcp->next; continue; } cpuid = intr_dist_cpuid(); /* disable interrupts */ rv = hvldc_intr_setvalid(cnex_ssp->cfghdl, cldcp->tx.ino, HV_INTR_NOTVALID); if (rv) { DWARN("cnex_intr_redist: tx ino=0x%llx, " "can't set valid\n", cldcp->tx.ino); mutex_exit(&cldcp->lock); mutex_exit(&cnex_ssp->clist_lock); return; } /* * Make a best effort to wait for pending interrupts * to finish. There is not much we can do if we timeout. */ start = gethrtime(); do { rv = hvldc_intr_getstate(cnex_ssp->cfghdl, cldcp->tx.ino, &intr_state); if (rv) { DWARN("cnex_intr_redist: tx ino=0x%llx," "can't get state\n", cldcp->tx.ino); mutex_exit(&cldcp->lock); mutex_exit(&cnex_ssp->clist_lock); return; } if ((gethrtime() - start) > cnex_pending_tmout) break; else drv_usecwait(cnex_wait_usecs); } while (!panicstr && intr_state == HV_INTR_DELIVERED_STATE); (void) hvldc_intr_settarget(cnex_ssp->cfghdl, cldcp->tx.ino, cpuid); (void) hvldc_intr_setvalid(cnex_ssp->cfghdl, cldcp->tx.ino, HV_INTR_VALID); } if (cldcp->rx.hdlr) { /* * Don't do anything for disabled interrupts. */ rv = hvldc_intr_getvalid(cnex_ssp->cfghdl, cldcp->rx.ino, &intr_state); if (rv) { DWARN("cnex_intr_redist: rx ino=0x%llx, " "can't get valid\n", cldcp->rx.ino); mutex_exit(&cldcp->lock); mutex_exit(&cnex_ssp->clist_lock); return; } if (intr_state == HV_INTR_NOTVALID) { mutex_exit(&cldcp->lock); cldcp = cldcp->next; continue; } cpuid = intr_dist_cpuid(); /* disable interrupts */ rv = hvldc_intr_setvalid(cnex_ssp->cfghdl, cldcp->rx.ino, HV_INTR_NOTVALID); if (rv) { DWARN("cnex_intr_redist: rx ino=0x%llx, " "can't set valid\n", cldcp->rx.ino); mutex_exit(&cldcp->lock); mutex_exit(&cnex_ssp->clist_lock); return; } /* * Make a best effort to wait for pending interrupts * to finish. There is not much we can do if we timeout. */ start = gethrtime(); do { rv = hvldc_intr_getstate(cnex_ssp->cfghdl, cldcp->rx.ino, &intr_state); if (rv) { DWARN("cnex_intr_redist: rx ino=0x%llx," "can't set state\n", cldcp->rx.ino); mutex_exit(&cldcp->lock); mutex_exit(&cnex_ssp->clist_lock); return; } if ((gethrtime() - start) > cnex_pending_tmout) break; else drv_usecwait(cnex_wait_usecs); } while (!panicstr && intr_state == HV_INTR_DELIVERED_STATE); (void) hvldc_intr_settarget(cnex_ssp->cfghdl, cldcp->rx.ino, cpuid); (void) hvldc_intr_setvalid(cnex_ssp->cfghdl, cldcp->rx.ino, HV_INTR_VALID); } mutex_exit(&cldcp->lock); /* next channel */ cldcp = cldcp->next; } mutex_exit(&cnex_ssp->clist_lock); } /* * Exported interface to register a LDC endpoint with * the channel nexus */ static int cnex_reg_chan(dev_info_t *dip, uint64_t id, ldc_dev_t devclass) { int idx; cnex_ldc_t *cldcp; int listsz, num_nodes, num_channels; md_t *mdp = NULL; mde_cookie_t rootnode, *listp = NULL; uint64_t tmp_id, rxino, txino; cnex_soft_state_t *cnex_ssp; int status, instance; /* Get device instance and structure */ instance = ddi_get_instance(dip); cnex_ssp = ddi_get_soft_state(cnex_state, instance); /* Check to see if channel is already registered */ mutex_enter(&cnex_ssp->clist_lock); cldcp = cnex_ssp->clist; while (cldcp) { if (cldcp->id == id) { DWARN("cnex_reg_chan: channel 0x%llx exists\n", id); mutex_exit(&cnex_ssp->clist_lock); return (EINVAL); } cldcp = cldcp->next; } /* Get the Tx/Rx inos from the MD */ if ((mdp = md_get_handle()) == NULL) { DWARN("cnex_reg_chan: cannot init MD\n"); mutex_exit(&cnex_ssp->clist_lock); return (ENXIO); } num_nodes = md_node_count(mdp); ASSERT(num_nodes > 0); listsz = num_nodes * sizeof (mde_cookie_t); listp = (mde_cookie_t *)kmem_zalloc(listsz, KM_SLEEP); rootnode = md_root_node(mdp); /* search for all channel_endpoint nodes */ num_channels = md_scan_dag(mdp, rootnode, md_find_name(mdp, "channel-endpoint"), md_find_name(mdp, "fwd"), listp); if (num_channels <= 0) { DWARN("cnex_reg_chan: invalid channel id\n"); kmem_free(listp, listsz); (void) md_fini_handle(mdp); mutex_exit(&cnex_ssp->clist_lock); return (EINVAL); } for (idx = 0; idx < num_channels; idx++) { /* Get the channel ID */ status = md_get_prop_val(mdp, listp[idx], "id", &tmp_id); if (status) { DWARN("cnex_reg_chan: cannot read LDC ID\n"); kmem_free(listp, listsz); (void) md_fini_handle(mdp); mutex_exit(&cnex_ssp->clist_lock); return (ENXIO); } if (tmp_id != id) continue; /* Get the Tx and Rx ino */ status = md_get_prop_val(mdp, listp[idx], "tx-ino", &txino); if (status) { DWARN("cnex_reg_chan: cannot read Tx ino\n"); kmem_free(listp, listsz); (void) md_fini_handle(mdp); mutex_exit(&cnex_ssp->clist_lock); return (ENXIO); } status = md_get_prop_val(mdp, listp[idx], "rx-ino", &rxino); if (status) { DWARN("cnex_reg_chan: cannot read Rx ino\n"); kmem_free(listp, listsz); (void) md_fini_handle(mdp); mutex_exit(&cnex_ssp->clist_lock); return (ENXIO); } } kmem_free(listp, listsz); (void) md_fini_handle(mdp); /* Allocate a new channel structure */ cldcp = kmem_zalloc(sizeof (*cldcp), KM_SLEEP); /* Initialize the channel */ mutex_init(&cldcp->lock, NULL, MUTEX_DRIVER, NULL); cldcp->id = id; cldcp->tx.ino = txino; cldcp->rx.ino = rxino; cldcp->devclass = devclass; /* add channel to nexus channel list */ cldcp->next = cnex_ssp->clist; cnex_ssp->clist = cldcp; mutex_exit(&cnex_ssp->clist_lock); return (0); } /* * Add Tx/Rx interrupt handler for the channel */ static int cnex_add_intr(dev_info_t *dip, uint64_t id, cnex_intrtype_t itype, uint_t (*hdlr)(), caddr_t arg1, caddr_t arg2) { int rv, idx, pil; cnex_ldc_t *cldcp; cnex_intr_t *iinfo; uint64_t cpuid; cnex_soft_state_t *cnex_ssp; int instance; /* Get device instance and structure */ instance = ddi_get_instance(dip); cnex_ssp = ddi_get_soft_state(cnex_state, instance); /* get channel info */ mutex_enter(&cnex_ssp->clist_lock); cldcp = cnex_ssp->clist; while (cldcp) { if (cldcp->id == id) break; cldcp = cldcp->next; } if (cldcp == NULL) { DWARN("cnex_add_intr: channel 0x%llx does not exist\n", id); mutex_exit(&cnex_ssp->clist_lock); return (EINVAL); } mutex_exit(&cnex_ssp->clist_lock); /* get channel lock */ mutex_enter(&cldcp->lock); /* get interrupt type */ if (itype == CNEX_TX_INTR) { iinfo = &(cldcp->tx); } else if (itype == CNEX_RX_INTR) { iinfo = &(cldcp->rx); } else { DWARN("cnex_add_intr: invalid interrupt type\n", id); mutex_exit(&cldcp->lock); return (EINVAL); } /* check if a handler is already added */ if (iinfo->hdlr != 0) { DWARN("cnex_add_intr: interrupt handler exists\n"); mutex_exit(&cldcp->lock); return (EINVAL); } /* save interrupt handler info */ iinfo->hdlr = hdlr; iinfo->arg1 = arg1; iinfo->arg2 = arg2; iinfo->ssp = cnex_ssp; /* * FIXME - generate the interrupt cookie * using the interrupt registry */ iinfo->icookie = cnex_ssp->cfghdl | iinfo->ino; D1("cnex_add_intr: add hdlr, cfghdl=0x%llx, ino=0x%llx, " "cookie=0x%llx\n", cnex_ssp->cfghdl, iinfo->ino, iinfo->icookie); /* Pick a PIL on the basis of the channel's devclass */ for (idx = 0, pil = PIL_3; idx < CNEX_MAX_DEVS; idx++) { if (cldcp->devclass == cnex_class_to_pil[idx].devclass) { pil = cnex_class_to_pil[idx].pil; break; } } /* add interrupt to solaris ivec table */ VERIFY(add_ivintr(iinfo->icookie, pil, (intrfunc)cnex_intr_wrapper, (caddr_t)iinfo, NULL, NULL) == 0); /* set the cookie in the HV */ rv = hvldc_intr_setcookie(cnex_ssp->cfghdl, iinfo->ino, iinfo->icookie); /* pick next CPU in the domain for this channel */ cpuid = intr_dist_cpuid(); /* set the target CPU and then enable interrupts */ rv = hvldc_intr_settarget(cnex_ssp->cfghdl, iinfo->ino, cpuid); if (rv) { DWARN("cnex_add_intr: ino=0x%llx, cannot set target cpu\n", iinfo->ino); goto hv_error; } rv = hvldc_intr_setstate(cnex_ssp->cfghdl, iinfo->ino, HV_INTR_IDLE_STATE); if (rv) { DWARN("cnex_add_intr: ino=0x%llx, cannot set state\n", iinfo->ino); goto hv_error; } rv = hvldc_intr_setvalid(cnex_ssp->cfghdl, iinfo->ino, HV_INTR_VALID); if (rv) { DWARN("cnex_add_intr: ino=0x%llx, cannot set valid\n", iinfo->ino); goto hv_error; } mutex_exit(&cldcp->lock); return (0); hv_error: (void) rem_ivintr(iinfo->icookie, pil); mutex_exit(&cldcp->lock); return (ENXIO); } /* * Exported interface to unregister a LDC endpoint with * the channel nexus */ static int cnex_unreg_chan(dev_info_t *dip, uint64_t id) { cnex_ldc_t *cldcp, *prev_cldcp; cnex_soft_state_t *cnex_ssp; int instance; /* Get device instance and structure */ instance = ddi_get_instance(dip); cnex_ssp = ddi_get_soft_state(cnex_state, instance); /* find and remove channel from list */ mutex_enter(&cnex_ssp->clist_lock); prev_cldcp = NULL; cldcp = cnex_ssp->clist; while (cldcp) { if (cldcp->id == id) break; prev_cldcp = cldcp; cldcp = cldcp->next; } if (cldcp == 0) { DWARN("cnex_unreg_chan: invalid channel %d\n", id); mutex_exit(&cnex_ssp->clist_lock); return (EINVAL); } if (cldcp->tx.hdlr || cldcp->rx.hdlr) { DWARN("cnex_unreg_chan: handlers still exist\n"); mutex_exit(&cnex_ssp->clist_lock); return (ENXIO); } if (prev_cldcp) prev_cldcp->next = cldcp->next; else cnex_ssp->clist = cldcp->next; mutex_exit(&cnex_ssp->clist_lock); /* destroy mutex */ mutex_destroy(&cldcp->lock); /* free channel */ kmem_free(cldcp, sizeof (*cldcp)); return (0); } /* * Remove Tx/Rx interrupt handler for the channel */ static int cnex_rem_intr(dev_info_t *dip, uint64_t id, cnex_intrtype_t itype) { int rv, idx, pil; cnex_ldc_t *cldcp; cnex_intr_t *iinfo; cnex_soft_state_t *cnex_ssp; int instance, istate; /* Get device instance and structure */ instance = ddi_get_instance(dip); cnex_ssp = ddi_get_soft_state(cnex_state, instance); /* get channel info */ mutex_enter(&cnex_ssp->clist_lock); cldcp = cnex_ssp->clist; while (cldcp) { if (cldcp->id == id) break; cldcp = cldcp->next; } if (cldcp == NULL) { DWARN("cnex_rem_intr: channel 0x%llx does not exist\n", id); mutex_exit(&cnex_ssp->clist_lock); return (EINVAL); } mutex_exit(&cnex_ssp->clist_lock); /* get rid of the channel intr handler */ mutex_enter(&cldcp->lock); /* get interrupt type */ if (itype == CNEX_TX_INTR) { iinfo = &(cldcp->tx); } else if (itype == CNEX_RX_INTR) { iinfo = &(cldcp->rx); } else { DWARN("cnex_rem_intr: invalid interrupt type\n"); mutex_exit(&cldcp->lock); return (EINVAL); } D1("cnex_rem_intr: interrupt ino=0x%x\n", iinfo->ino); /* check if a handler is already added */ if (iinfo->hdlr == 0) { DWARN("cnex_rem_intr: interrupt handler does not exist\n"); mutex_exit(&cldcp->lock); return (EINVAL); } D1("cnex_rem_intr: set intr to invalid ino=0x%x\n", iinfo->ino); rv = hvldc_intr_setvalid(cnex_ssp->cfghdl, iinfo->ino, HV_INTR_NOTVALID); if (rv) { DWARN("cnex_rem_intr: cannot set valid ino=%x\n", iinfo->ino); mutex_exit(&cldcp->lock); return (ENXIO); } /* * Check if there are pending interrupts. If interrupts are * pending return EAGAIN. */ rv = hvldc_intr_getstate(cnex_ssp->cfghdl, iinfo->ino, &istate); if (rv) { DWARN("cnex_rem_intr: ino=0x%llx, cannot get state\n", iinfo->ino); mutex_exit(&cldcp->lock); return (ENXIO); } /* if interrupts are still pending print warning */ if (istate != HV_INTR_IDLE_STATE) { DWARN("cnex_rem_intr: cannot remove intr busy ino=%x\n", iinfo->ino); mutex_exit(&cldcp->lock); return (EAGAIN); } /* Pick a PIL on the basis of the channel's devclass */ for (idx = 0, pil = PIL_3; idx < CNEX_MAX_DEVS; idx++) { if (cldcp->devclass == cnex_class_to_pil[idx].devclass) { pil = cnex_class_to_pil[idx].pil; break; } } /* remove interrupt */ (void) rem_ivintr(iinfo->icookie, pil); /* clear interrupt info */ bzero(iinfo, sizeof (*iinfo)); mutex_exit(&cldcp->lock); return (0); } /* * Clear pending Tx/Rx interrupt */ static int cnex_clr_intr(dev_info_t *dip, uint64_t id, cnex_intrtype_t itype) { int rv; cnex_ldc_t *cldcp; cnex_intr_t *iinfo; cnex_soft_state_t *cnex_ssp; int instance; /* Get device instance and structure */ instance = ddi_get_instance(dip); cnex_ssp = ddi_get_soft_state(cnex_state, instance); /* get channel info */ mutex_enter(&cnex_ssp->clist_lock); cldcp = cnex_ssp->clist; while (cldcp) { if (cldcp->id == id) break; cldcp = cldcp->next; } if (cldcp == NULL) { DWARN("cnex_clr_intr: channel 0x%llx does not exist\n", id); mutex_exit(&cnex_ssp->clist_lock); return (EINVAL); } mutex_exit(&cnex_ssp->clist_lock); mutex_enter(&cldcp->lock); /* get interrupt type */ if (itype == CNEX_TX_INTR) { iinfo = &(cldcp->tx); } else if (itype == CNEX_RX_INTR) { iinfo = &(cldcp->rx); } else { DWARN("cnex_clr_intr: invalid interrupt type\n"); mutex_exit(&cldcp->lock); return (EINVAL); } D1("cnex_rem_intr: interrupt ino=0x%x\n", iinfo->ino); /* check if a handler is already added */ if (iinfo->hdlr == 0) { DWARN("cnex_clr_intr: interrupt handler does not exist\n"); mutex_exit(&cldcp->lock); return (EINVAL); } rv = hvldc_intr_setstate(cnex_ssp->cfghdl, iinfo->ino, HV_INTR_IDLE_STATE); if (rv) { DWARN("cnex_clr_intr: cannot clear interrupt state\n"); mutex_exit(&cldcp->lock); return (ENXIO); } mutex_exit(&cldcp->lock); return (0); } /* * Channel nexus interrupt handler wrapper */ static uint_t cnex_intr_wrapper(caddr_t arg) { int res; uint_t (*handler)(); caddr_t handler_arg1; caddr_t handler_arg2; cnex_intr_t *iinfo = (cnex_intr_t *)arg; ASSERT(iinfo != NULL); handler = iinfo->hdlr; handler_arg1 = iinfo->arg1; handler_arg2 = iinfo->arg2; D1("cnex_intr_wrapper: ino=0x%llx invoke client handler\n", iinfo->ino); res = (*handler)(handler_arg1, handler_arg2); return (res); } /*ARGSUSED*/ static int cnex_attach(dev_info_t *devi, ddi_attach_cmd_t cmd) { int rv, instance, reglen; cnex_regspec_t *reg_p; ldc_cnex_t cinfo; cnex_soft_state_t *cnex_ssp; switch (cmd) { case DDI_ATTACH: break; case DDI_RESUME: return (DDI_SUCCESS); default: return (DDI_FAILURE); } /* * Get the instance specific soft state structure. * Save the devi for this instance in the soft_state data. */ instance = ddi_get_instance(devi); if (ddi_soft_state_zalloc(cnex_state, instance) != DDI_SUCCESS) return (DDI_FAILURE); cnex_ssp = ddi_get_soft_state(cnex_state, instance); cnex_ssp->devi = devi; cnex_ssp->clist = NULL; if (ddi_getlongprop(DDI_DEV_T_ANY, devi, DDI_PROP_DONTPASS, "reg", (caddr_t)®_p, ®len) != DDI_SUCCESS) { return (DDI_FAILURE); } /* get the sun4v config handle for this device */ cnex_ssp->cfghdl = SUN4V_REG_SPEC2CFG_HDL(reg_p->physaddr); kmem_free(reg_p, reglen); D1("cnex_attach: cfghdl=0x%llx\n", cnex_ssp->cfghdl); /* init channel list mutex */ mutex_init(&cnex_ssp->clist_lock, NULL, MUTEX_DRIVER, NULL); /* Register with LDC module */ cinfo.dip = devi; cinfo.reg_chan = cnex_reg_chan; cinfo.unreg_chan = cnex_unreg_chan; cinfo.add_intr = cnex_add_intr; cinfo.rem_intr = cnex_rem_intr; cinfo.clr_intr = cnex_clr_intr; /* * LDC register will fail if an nexus instance had already * registered with the LDC framework */ rv = ldc_register(&cinfo); if (rv) { DWARN("cnex_attach: unable to register with LDC\n"); ddi_soft_state_free(cnex_state, instance); mutex_destroy(&cnex_ssp->clist_lock); return (DDI_FAILURE); } if (ddi_create_minor_node(devi, "devctl", S_IFCHR, instance, DDI_NT_NEXUS, 0) != DDI_SUCCESS) { ddi_remove_minor_node(devi, NULL); ddi_soft_state_free(cnex_state, instance); mutex_destroy(&cnex_ssp->clist_lock); return (DDI_FAILURE); } /* Add interrupt redistribution callback. */ intr_dist_add(cnex_intr_redist, cnex_ssp); ddi_report_dev(devi); return (DDI_SUCCESS); } /*ARGSUSED*/ static int cnex_detach(dev_info_t *devi, ddi_detach_cmd_t cmd) { int instance; ldc_cnex_t cinfo; cnex_soft_state_t *cnex_ssp; switch (cmd) { case DDI_DETACH: break; case DDI_SUSPEND: return (DDI_SUCCESS); default: return (DDI_FAILURE); } instance = ddi_get_instance(devi); cnex_ssp = ddi_get_soft_state(cnex_state, instance); /* check if there are any channels still registered */ if (cnex_ssp->clist) { cmn_err(CE_WARN, "?cnex_dettach: channels registered %d\n", ddi_get_instance(devi)); return (DDI_FAILURE); } /* Unregister with LDC module */ cinfo.dip = devi; (void) ldc_unregister(&cinfo); /* Remove interrupt redistribution callback. */ intr_dist_rem(cnex_intr_redist, cnex_ssp); /* destroy mutex */ mutex_destroy(&cnex_ssp->clist_lock); /* free soft state structure */ ddi_soft_state_free(cnex_state, instance); return (DDI_SUCCESS); } /*ARGSUSED*/ static int cnex_open(dev_t *devp, int flags, int otyp, cred_t *credp) { int instance; if (otyp != OTYP_CHR) return (EINVAL); instance = getminor(*devp); if (ddi_get_soft_state(cnex_state, instance) == NULL) return (ENXIO); return (0); } /*ARGSUSED*/ static int cnex_close(dev_t dev, int flags, int otyp, cred_t *credp) { int instance; if (otyp != OTYP_CHR) return (EINVAL); instance = getminor(dev); if (ddi_get_soft_state(cnex_state, instance) == NULL) return (ENXIO); return (0); } /*ARGSUSED*/ static int cnex_ioctl(dev_t dev, int cmd, intptr_t arg, int mode, cred_t *cred_p, int *rval_p) { int instance; cnex_soft_state_t *cnex_ssp; instance = getminor(dev); if ((cnex_ssp = ddi_get_soft_state(cnex_state, instance)) == NULL) return (ENXIO); ASSERT(cnex_ssp->devi); return (ndi_devctl_ioctl(cnex_ssp->devi, cmd, arg, mode, 0)); } static int cnex_ctl(dev_info_t *dip, dev_info_t *rdip, ddi_ctl_enum_t ctlop, void *arg, void *result) { char name[MAXNAMELEN]; uint32_t reglen; int *cnex_regspec; switch (ctlop) { case DDI_CTLOPS_REPORTDEV: if (rdip == NULL) return (DDI_FAILURE); cmn_err(CE_CONT, "?channel-device: %s%d\n", ddi_driver_name(rdip), ddi_get_instance(rdip)); return (DDI_SUCCESS); case DDI_CTLOPS_INITCHILD: { dev_info_t *child = (dev_info_t *)arg; if (ddi_prop_lookup_int_array(DDI_DEV_T_ANY, child, DDI_PROP_DONTPASS, "reg", &cnex_regspec, ®len) != DDI_SUCCESS) { return (DDI_FAILURE); } (void) snprintf(name, sizeof (name), "%x", *cnex_regspec); ddi_set_name_addr(child, name); ddi_set_parent_data(child, NULL); ddi_prop_free(cnex_regspec); return (DDI_SUCCESS); } case DDI_CTLOPS_UNINITCHILD: { dev_info_t *child = (dev_info_t *)arg; NDI_CONFIG_DEBUG((CE_NOTE, "DDI_CTLOPS_UNINITCHILD(%s, instance=%d)", ddi_driver_name(child), DEVI(child)->devi_instance)); ddi_set_name_addr(child, NULL); return (DDI_SUCCESS); } case DDI_CTLOPS_DMAPMAPC: case DDI_CTLOPS_REPORTINT: case DDI_CTLOPS_REGSIZE: case DDI_CTLOPS_NREGS: case DDI_CTLOPS_SIDDEV: case DDI_CTLOPS_SLAVEONLY: case DDI_CTLOPS_AFFINITY: case DDI_CTLOPS_POKE: case DDI_CTLOPS_PEEK: /* * These ops correspond to functions that "shouldn't" be called * by a channel-device driver. So we whine when we're called. */ cmn_err(CE_WARN, "%s%d: invalid op (%d) from %s%d\n", ddi_driver_name(dip), ddi_get_instance(dip), ctlop, ddi_driver_name(rdip), ddi_get_instance(rdip)); return (DDI_FAILURE); case DDI_CTLOPS_ATTACH: case DDI_CTLOPS_BTOP: case DDI_CTLOPS_BTOPR: case DDI_CTLOPS_DETACH: case DDI_CTLOPS_DVMAPAGESIZE: case DDI_CTLOPS_IOMIN: case DDI_CTLOPS_POWER: case DDI_CTLOPS_PTOB: default: /* * Everything else (e.g. PTOB/BTOP/BTOPR requests) we pass up */ return (ddi_ctlops(dip, rdip, ctlop, arg, result)); } } /* -------------------------------------------------------------------------- */