03831d35f7499c87d51205817c93e9a8d42c4baestevel * CDDL HEADER START
03831d35f7499c87d51205817c93e9a8d42c4baestevel * The contents of this file are subject to the terms of the
03831d35f7499c87d51205817c93e9a8d42c4baestevel * Common Development and Distribution License (the "License").
03831d35f7499c87d51205817c93e9a8d42c4baestevel * You may not use this file except in compliance with the License.
03831d35f7499c87d51205817c93e9a8d42c4baestevel * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
03831d35f7499c87d51205817c93e9a8d42c4baestevel * See the License for the specific language governing permissions
03831d35f7499c87d51205817c93e9a8d42c4baestevel * and limitations under the License.
03831d35f7499c87d51205817c93e9a8d42c4baestevel * When distributing Covered Code, include this CDDL HEADER in each
03831d35f7499c87d51205817c93e9a8d42c4baestevel * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
03831d35f7499c87d51205817c93e9a8d42c4baestevel * If applicable, add the following below this CDDL HEADER, with the
03831d35f7499c87d51205817c93e9a8d42c4baestevel * fields enclosed by brackets "[]" replaced with your own identifying
03831d35f7499c87d51205817c93e9a8d42c4baestevel * information: Portions Copyright [yyyy] [name of copyright owner]
03831d35f7499c87d51205817c93e9a8d42c4baestevel * CDDL HEADER END
07d06da50d310a325b457d6330165aebab1e0064Surya Prakki * Copyright 2009 Sun Microsystems, Inc. All rights reserved.
03831d35f7499c87d51205817c93e9a8d42c4baestevel * Use is subject to license terms.
03831d35f7499c87d51205817c93e9a8d42c4baestevel * Serengeti CompactPCI Hot Swap Controller Driver.
03831d35f7499c87d51205817c93e9a8d42c4baestevel * Debug flags
03831d35f7499c87d51205817c93e9a8d42c4baestevel * Global data
03831d35f7499c87d51205817c93e9a8d42c4baestevelstatic sghsc_rb_head_t sghsc_rb_header; /* ring buffer header */
03831d35f7499c87d51205817c93e9a8d42c4baestevel * Definitions for events thread (outside interrupt context), mutex and
03831d35f7499c87d51205817c93e9a8d42c4baestevel * condition variable.
03831d35f7499c87d51205817c93e9a8d42c4baestevel 0, /* streamtab */
03831d35f7499c87d51205817c93e9a8d42c4baestevel * Function prototype for dev_ops
03831d35f7499c87d51205817c93e9a8d42c4baestevelstatic int sghsc_attach(dev_info_t *, ddi_attach_cmd_t);
03831d35f7499c87d51205817c93e9a8d42c4baestevelstatic int sghsc_detach(dev_info_t *, ddi_detach_cmd_t);
03831d35f7499c87d51205817c93e9a8d42c4baestevel 0, /* refcnt */
193974072f41a843678abf5f61979c748687e66bSherry Moore "Serengeti CompactPCI HSC",
03831d35f7499c87d51205817c93e9a8d42c4baestevel * Function prototype for HP support
03831d35f7499c87d51205817c93e9a8d42c4baestevelstatic int sghsc_connect(caddr_t, hpc_slot_t slot, void *, uint_t);
03831d35f7499c87d51205817c93e9a8d42c4baestevelstatic int sghsc_disconnect(caddr_t, hpc_slot_t, void *, uint_t);
03831d35f7499c87d51205817c93e9a8d42c4baestevelstatic int sghsc_control(caddr_t, hpc_slot_t, int, caddr_t);
03831d35f7499c87d51205817c93e9a8d42c4baestevel * Function prototypes for internal functions
03831d35f7499c87d51205817c93e9a8d42c4baestevelstatic int sghsc_scctl(int, int, int, int, int *);
03831d35f7499c87d51205817c93e9a8d42c4baestevelstatic int sghsc_led_state(sghsc_t *, hpc_slot_t, int, hpc_led_info_t *);
03831d35f7499c87d51205817c93e9a8d42c4baestevelstatic int sghsc_rb_get(sghsc_rb_head_t *, sghsc_event_t *);
03831d35f7499c87d51205817c93e9a8d42c4baestevelstatic int sghsc_rb_put(sghsc_rb_head_t *, sghsc_event_t *);
03831d35f7499c87d51205817c93e9a8d42c4baestevel * Patchable timeout value
03831d35f7499c87d51205817c93e9a8d42c4baestevel * Data for self-identification. This will help enumerate all soft states.
03831d35f7499c87d51205817c93e9a8d42c4baestevel * Six slot boat and four slot boats are different in topology (slot to
03831d35f7499c87d51205817c93e9a8d42c4baestevel * bus assignment) and here we should have 2 separate maps (the first 3
03831d35f7499c87d51205817c93e9a8d42c4baestevel * slots have the same topology). The map is in the "delta" form. Logical
03831d35f7499c87d51205817c93e9a8d42c4baestevel * slots correspond to indexes in the map.
03831d35f7499c87d51205817c93e9a8d42c4baestevel 0, 6, 1, HPC_SLOT_TYPE_CPCI, /* logical/physical slot 0 - Schizo0/A */
03831d35f7499c87d51205817c93e9a8d42c4baestevel 0, 7, 1, HPC_SLOT_TYPE_CPCI /* logical/physical slot 3 - Schizo0/B */
03831d35f7499c87d51205817c93e9a8d42c4baestevel 0, 6, 1, HPC_SLOT_TYPE_CPCI, /* logical/physical slot 0 - Schizo0/A */
03831d35f7499c87d51205817c93e9a8d42c4baestevel 1, 6, 1, HPC_SLOT_TYPE_CPCI, /* logical/physical slot 1 - Schizo1/A */
03831d35f7499c87d51205817c93e9a8d42c4baestevel 0, 7, 1, HPC_SLOT_TYPE_CPCI, /* logical/physical slot 2 - Schizo0/B */
03831d35f7499c87d51205817c93e9a8d42c4baestevel 1, 7, 1, HPC_SLOT_TYPE_CPCI /* logical/physical slot 3 - Schizo1/B */
03831d35f7499c87d51205817c93e9a8d42c4baestevel 0, 6, 1, HPC_SLOT_TYPE_CPCI, /* logical/physical slot 0 - Schizo0/A */
03831d35f7499c87d51205817c93e9a8d42c4baestevel 0, 7, 1, HPC_SLOT_TYPE_CPCI, /* logical/physical slot 3 - Schizo0/B */
03831d35f7499c87d51205817c93e9a8d42c4baestevel 0, 7, 2, HPC_SLOT_TYPE_CPCI, /* logical/physical slot 4 - Schizo0/B */
03831d35f7499c87d51205817c93e9a8d42c4baestevel 0, 7, 3, HPC_SLOT_TYPE_CPCI /* logical/physical slot 5 - Schizo0/B */
03831d35f7499c87d51205817c93e9a8d42c4baestevel 0, 6, 1, HPC_SLOT_TYPE_CPCI, /* logical/physical slot 0 - Schizo0/A */
03831d35f7499c87d51205817c93e9a8d42c4baestevel 1, 6, 1, HPC_SLOT_TYPE_CPCI, /* logical/physical slot 1 - Schizo1/A */
03831d35f7499c87d51205817c93e9a8d42c4baestevel 0, 7, 1, HPC_SLOT_TYPE_CPCI, /* logical/physical slot 2 - Schizo0/B */
03831d35f7499c87d51205817c93e9a8d42c4baestevel 0, 7, 2, HPC_SLOT_TYPE_CPCI, /* logical/physical slot 3 - Schizo0/B */
03831d35f7499c87d51205817c93e9a8d42c4baestevel 1, 7, 1, HPC_SLOT_TYPE_CPCI, /* logical/physical slot 4 - Schizo1/B */
03831d35f7499c87d51205817c93e9a8d42c4baestevel 1, 7, 2, HPC_SLOT_TYPE_CPCI /* logical/physical slot 5 - Schizo1/B */
03831d35f7499c87d51205817c93e9a8d42c4baestevel * DR event handlers
03831d35f7499c87d51205817c93e9a8d42c4baestevel * We want to register the event handlers once for all instances. In the
03831d35f7499c87d51205817c93e9a8d42c4baestevel * other hand we have register them after the sghsc has been attached.
03831d35f7499c87d51205817c93e9a8d42c4baestevel * event_initialize gives us the logic of only registering the events only
03831d35f7499c87d51205817c93e9a8d42c4baestevel * once. The event thread will do all the work when called from interrupts.
03831d35f7499c87d51205817c93e9a8d42c4baestevelstatic void sghsc_event_thread_code(void);
03831d35f7499c87d51205817c93e9a8d42c4baestevel * DR event msg and payload
03831d35f7499c87d51205817c93e9a8d42c4baestevel * Event lock and state
03831d35f7499c87d51205817c93e9a8d42c4baestevel mutex_init(&sghsc_event_thread_mutex, NULL, MUTEX_DRIVER, NULL);
03831d35f7499c87d51205817c93e9a8d42c4baestevel cv_init(&sghsc_event_thread_cv, NULL, CV_DRIVER, NULL);
03831d35f7499c87d51205817c93e9a8d42c4baestevel * Unregister the event handler
07d06da50d310a325b457d6330165aebab1e0064Surya Prakki (void) sbbc_mbox_unreg_intr(MBOX_EVENT_CPCI_ENUM, sghsc_event_handler);
03831d35f7499c87d51205817c93e9a8d42c4baestevel * Kill the event thread if it is running.
03831d35f7499c87d51205817c93e9a8d42c4baestevel * Goes to the thread at once.
03831d35f7499c87d51205817c93e9a8d42c4baestevel * Waiting for the response from the thread.
03831d35f7499c87d51205817c93e9a8d42c4baestevel cv_wait(&sghsc_event_thread_cv, &sghsc_event_thread_mutex);
03831d35f7499c87d51205817c93e9a8d42c4baestevel * tear down shared, global ring buffer now that it is safe to
03831d35f7499c87d51205817c93e9a8d42c4baestevel * do so because sghsc_event_handler has been unregistered and
03831d35f7499c87d51205817c93e9a8d42c4baestevel * sghsc_event_thread_code has exited
03831d35f7499c87d51205817c93e9a8d42c4baestevel return (0);
03831d35f7499c87d51205817c93e9a8d42c4baestevel * sghsc_attach()
03831d35f7499c87d51205817c93e9a8d42c4baestevel/* ARGSUSED */
03831d35f7499c87d51205817c93e9a8d42c4baestevel /* Fetch Safari Extended Agent ID of this device. */
03831d35f7499c87d51205817c93e9a8d42c4baestevel cmn_err(CE_WARN, "sghsc%d: property %s out of bounds %d\n",
03831d35f7499c87d51205817c93e9a8d42c4baestevel if (ddi_soft_state_zalloc(sghsc_state, instance) != DDI_SUCCESS)
03831d35f7499c87d51205817c93e9a8d42c4baestevel sghsc = (sghsc_t *)ddi_get_soft_state(sghsc_state, instance);
03831d35f7499c87d51205817c93e9a8d42c4baestevel mutex_init(SGHSC_MUTEX(sghsc), NULL, MUTEX_DRIVER, NULL);
03831d35f7499c87d51205817c93e9a8d42c4baestevel rc = sghsc_scctl(SGHSC_GET_NUM_SLOTS, sghsc->sghsc_node_id,
03831d35f7499c87d51205817c93e9a8d42c4baestevel sghsc->sghsc_board, 0, (int *)&sghsc->sghsc_num_slots);
03831d35f7499c87d51205817c93e9a8d42c4baestevel cmn_err(CE_WARN, "sghsc%d: unable to size node %d / board %d",
03831d35f7499c87d51205817c93e9a8d42c4baestevel DEBUGF(1, (CE_NOTE, "sghsc%d: node %d / board %d has %d slots",
03831d35f7499c87d51205817c93e9a8d42c4baestevel cmn_err(CE_WARN, "sghsc%d: wrong num of slots %d for node %d"
03831d35f7499c87d51205817c93e9a8d42c4baestevel rc = sghsc_scctl(SGHSC_GET_CPCI_BOARD_TYPE, sghsc->sghsc_node_id,
03831d35f7499c87d51205817c93e9a8d42c4baestevel DEBUGF(1, (CE_NOTE, "sghsc%d: node %d / board %d is type %d",
03831d35f7499c87d51205817c93e9a8d42c4baestevel instance, sghsc->sghsc_node_id, sghsc->sghsc_board, board_type));
03831d35f7499c87d51205817c93e9a8d42c4baestevel sghsc->sghsc_slot_table = (sghsc_slot_t *)kmem_zalloc((size_t)
03831d35f7499c87d51205817c93e9a8d42c4baestevel (sghsc->sghsc_num_slots * sizeof (sghsc_slot_t)), KM_SLEEP);
03831d35f7499c87d51205817c93e9a8d42c4baestevel if (sghsc_register_slots(sghsc, board_type) != DDI_SUCCESS) {
03831d35f7499c87d51205817c93e9a8d42c4baestevel " failed for node %d / board %d",
03831d35f7499c87d51205817c93e9a8d42c4baestevel instance, sghsc->sghsc_node_id, sghsc->sghsc_board));
03831d35f7499c87d51205817c93e9a8d42c4baestevel if (sghsc_connect((caddr_t)sghsc, 0, 0, SGHSC_ALL_SLOTS_ENABLE)
03831d35f7499c87d51205817c93e9a8d42c4baestevel DEBUGF(1, (CE_NOTE, "sghsc%d: sghsc_connect failed for"
03831d35f7499c87d51205817c93e9a8d42c4baestevel " node %d / board %d", instance, sghsc->sghsc_node_id,
03831d35f7499c87d51205817c93e9a8d42c4baestevel * allocate shared, global ring buffer before registering
03831d35f7499c87d51205817c93e9a8d42c4baestevel * sghsc_event_handler and before starting
03831d35f7499c87d51205817c93e9a8d42c4baestevel * sghsc_event_thread_code
03831d35f7499c87d51205817c93e9a8d42c4baestevel * Regiter cpci DR event handler
03831d35f7499c87d51205817c93e9a8d42c4baestevel mutex_init(&sghsc_event_lock, NULL, MUTEX_DRIVER, NULL);
03831d35f7499c87d51205817c93e9a8d42c4baestevel cmn_err(CE_WARN, "sghsc%d: failed to register events"
03831d35f7499c87d51205817c93e9a8d42c4baestevel * Create the event thread if it is not already created.
03831d35f7499c87d51205817c93e9a8d42c4baestevel * Grossly bump up the instance counter. We may have holes inside.
03831d35f7499c87d51205817c93e9a8d42c4baestevel * Free up allocated resources and return error
03831d35f7499c87d51205817c93e9a8d42c4baestevel * sghsc_register_slots => unregister all slots
03831d35f7499c87d51205817c93e9a8d42c4baestevel DEBUGF(1, (CE_NOTE, "sghsc%d: attach failed for node %d",
03831d35f7499c87d51205817c93e9a8d42c4baestevel * detach(9E)
03831d35f7499c87d51205817c93e9a8d42c4baestevel/* ARGSUSED */
03831d35f7499c87d51205817c93e9a8d42c4baestevel sghsc = (sghsc_t *)ddi_get_soft_state(sghsc_state, instance);
03831d35f7499c87d51205817c93e9a8d42c4baestevel * We don't allow to detach in case the pci nexus
03831d35f7499c87d51205817c93e9a8d42c4baestevel * didn't run pcihp_uninit(). The buses should be
03831d35f7499c87d51205817c93e9a8d42c4baestevel * unregistered by now, otherwise slot info will be
03831d35f7499c87d51205817c93e9a8d42c4baestevel * corrupted on the next 'cfgadm'.
03831d35f7499c87d51205817c93e9a8d42c4baestevel "sghsc: must detach buses first");
03831d35f7499c87d51205817c93e9a8d42c4baestevel * Grossly decrement the counter. We may have holes inside.
03831d35f7499c87d51205817c93e9a8d42c4baestevel * Set up and register slot 0 to num_slots with hotplug
03831d35f7499c87d51205817c93e9a8d42c4baestevel * framework
03831d35f7499c87d51205817c93e9a8d42c4baestevel * Assume SGHSC_MUTEX is held
03831d35f7499c87d51205817c93e9a8d42c4baestevel * Return val: DDI_SUCCESS
03831d35f7499c87d51205817c93e9a8d42c4baestevel * DDI_FAILURE
03831d35f7499c87d51205817c93e9a8d42c4baestevel DEBUGF(1, (CE_NOTE, "sghsc%d: slot table has %d entries for "
03831d35f7499c87d51205817c93e9a8d42c4baestevel "node %d / board %d", sghsc->sghsc_instance, sghsc->sghsc_num_slots,
03831d35f7499c87d51205817c93e9a8d42c4baestevel if ((cpci_enable == 0) || (sg_prom_cpci_dr_check() != 0))
03831d35f7499c87d51205817c93e9a8d42c4baestevel * If the GET_CPCI_BOARD_TYPE request failed, board type
03831d35f7499c87d51205817c93e9a8d42c4baestevel * will be NO_BOARD_TYPE. In that case, assume it is an
03831d35f7499c87d51205817c93e9a8d42c4baestevel * io boat and make board type determination based on the
03831d35f7499c87d51205817c93e9a8d42c4baestevel * number of slots.
03831d35f7499c87d51205817c93e9a8d42c4baestevel " node %d / board %d",
03831d35f7499c87d51205817c93e9a8d42c4baestevel * constructing the slot table array and register the
03831d35f7499c87d51205817c93e9a8d42c4baestevel * slot with the HPS
03831d35f7499c87d51205817c93e9a8d42c4baestevel * we don't depend on the .conf file
03831d35f7499c87d51205817c93e9a8d42c4baestevel * Some kind of black list may be needed
03831d35f7499c87d51205817c93e9a8d42c4baestevel * Need to talk to SC and get slot info and set slot state:
03831d35f7499c87d51205817c93e9a8d42c4baestevel * 1. slot status
03831d35f7499c87d51205817c93e9a8d42c4baestevel * 2. slot capabilities
03831d35f7499c87d51205817c93e9a8d42c4baestevel * 3. LED status
03831d35f7499c87d51205817c93e9a8d42c4baestevel * 4. get bus num
03831d35f7499c87d51205817c93e9a8d42c4baestevel * fill up nexuspath, extended id is used instead of the
03831d35f7499c87d51205817c93e9a8d42c4baestevel * local one, the node id is encoded in the path twice.
03831d35f7499c87d51205817c93e9a8d42c4baestevel base_id = sghsc->sghsc_portid & SGHSC_SAFARI_ID_EVEN;
07d06da50d310a325b457d6330165aebab1e0064Surya Prakki (void) sprintf(nexuspath, SGHSC_PATH, sghsc->sghsc_node_id,
03831d35f7499c87d51205817c93e9a8d42c4baestevel (base_id + slot2bus[i].agent_delta), slot2bus[i].off);
03831d35f7499c87d51205817c93e9a8d42c4baestevel * fill up slot_info
03831d35f7499c87d51205817c93e9a8d42c4baestevel /* capabilities need to be discovered via SC */
03831d35f7499c87d51205817c93e9a8d42c4baestevel DEBUGF(1, (CE_NOTE, "pci_slot_name is %s at pci_dev_num %d"
03831d35f7499c87d51205817c93e9a8d42c4baestevel * allocate and fill up slot_ops
03831d35f7499c87d51205817c93e9a8d42c4baestevel /* assign slot ops for HPS */
03831d35f7499c87d51205817c93e9a8d42c4baestevel * HA (Full Hot Swap) is the default mode of operation
03831d35f7499c87d51205817c93e9a8d42c4baestevel * but the type of the board is set conservstively as
03831d35f7499c87d51205817c93e9a8d42c4baestevel * sghsc has no way of knowing it. The HP Framwork will
03831d35f7499c87d51205817c93e9a8d42c4baestevel * overwrite the value set at boot time.
03831d35f7499c87d51205817c93e9a8d42c4baestevel sghsc->sghsc_slot_table[i].flags = SGHSC_SLOT_AUTO_CFG_EN;
03831d35f7499c87d51205817c93e9a8d42c4baestevel sghsc->sghsc_slot_table[i].board_type = HPC_BOARD_UNKNOWN;
03831d35f7499c87d51205817c93e9a8d42c4baestevel /* Only register CPCI slots */
03831d35f7499c87d51205817c93e9a8d42c4baestevel "slot %d is non-cpci", i));
03831d35f7499c87d51205817c93e9a8d42c4baestevel * register slots
03831d35f7499c87d51205817c93e9a8d42c4baestevel * return failure and let attach()
03831d35f7499c87d51205817c93e9a8d42c4baestevel * do the cleanup
03831d35f7499c87d51205817c93e9a8d42c4baestevel cmn_err(CE_WARN, "sghsc%d: Slot <%s> failed during HPS"
03831d35f7499c87d51205817c93e9a8d42c4baestevel " registration process for node %d / board %d",
03831d35f7499c87d51205817c93e9a8d42c4baestevel DEBUGF(1, (CE_NOTE, "sghsc registered successfully for"
03831d35f7499c87d51205817c93e9a8d42c4baestevel " node %d / board %d", sghsc->sghsc_node_id, sghsc->sghsc_board));
03831d35f7499c87d51205817c93e9a8d42c4baestevel * Connecting a slot or all slots
03831d35f7499c87d51205817c93e9a8d42c4baestevel * State Diagram:
03831d35f7499c87d51205817c93e9a8d42c4baestevel * hw bits EMPTY DISCONNECT CONNECT
03831d35f7499c87d51205817c93e9a8d42c4baestevel * slot_enable NO NO YES
03831d35f7499c87d51205817c93e9a8d42c4baestevel * card_present NO YES YES
03831d35f7499c87d51205817c93e9a8d42c4baestevel * slot_switch N/A NO/YES YES
03831d35f7499c87d51205817c93e9a8d42c4baestevel * Return val: HPC_SUCCESS if the slot(s) are enabled
03831d35f7499c87d51205817c93e9a8d42c4baestevel * HPC_ERR_FAILED if the slot can't be enabled
03831d35f7499c87d51205817c93e9a8d42c4baestevel/* ARGSUSED */
03831d35f7499c87d51205817c93e9a8d42c4baestevelsghsc_connect(caddr_t op_arg, hpc_slot_t sloth, void *data,
03831d35f7499c87d51205817c93e9a8d42c4baestevel * All slots will be marked 'empty' as HP Framework
03831d35f7499c87d51205817c93e9a8d42c4baestevel * will try to connect those which have no kernel node.
03831d35f7499c87d51205817c93e9a8d42c4baestevel DEBUGF(1, (CE_NOTE, "sghsc%d: connecting logical slot%d for"
03831d35f7499c87d51205817c93e9a8d42c4baestevel " node %d / board %d", sghsc->sghsc_instance, slot_num,
03831d35f7499c87d51205817c93e9a8d42c4baestevel * Powering an empty slot is highly illegal so far
03831d35f7499c87d51205817c93e9a8d42c4baestevel * (before SC implemented a constant poll). Otherwise
03831d35f7499c87d51205817c93e9a8d42c4baestevel * it breaks ddi framework and HP. The workaround
03831d35f7499c87d51205817c93e9a8d42c4baestevel * is to check for a card first.
03831d35f7499c87d51205817c93e9a8d42c4baestevel rc = sghsc_scctl(SGHSC_GET_SLOT_STATUS, sghsc->sghsc_node_id,
03831d35f7499c87d51205817c93e9a8d42c4baestevel cmn_err(CE_NOTE, "sghsc%d: unable to stat slot %d for"
03831d35f7499c87d51205817c93e9a8d42c4baestevel " node %d / board %d", sghsc->sghsc_instance, slot_num,
03831d35f7499c87d51205817c93e9a8d42c4baestevel sghsc->sghsc_slot_table[i].slot_status = HPC_SLOT_UNKNOWN;
03831d35f7499c87d51205817c93e9a8d42c4baestevel if ((result >> CPCI_STAT_SLOT_EMPTY_SHIFT) & ONE_BIT) {
03831d35f7499c87d51205817c93e9a8d42c4baestevel sghsc->sghsc_slot_table[i].slot_status = HPC_SLOT_EMPTY;
03831d35f7499c87d51205817c93e9a8d42c4baestevel rc = sghsc_scctl(SGHSC_SET_SLOT_POWER_ON, sghsc->sghsc_node_id,
03831d35f7499c87d51205817c93e9a8d42c4baestevel cmn_err(CE_WARN, "sghsc%d: unable to poweron slot %d for"
03831d35f7499c87d51205817c93e9a8d42c4baestevel * Disconnecting a slot or slots
03831d35f7499c87d51205817c93e9a8d42c4baestevel * return: HPC_SUCCESS if slot(s) are successfully disconnected
03831d35f7499c87d51205817c93e9a8d42c4baestevel * HPC_ERR_FAILED if slot(s) can't be disconnected
03831d35f7499c87d51205817c93e9a8d42c4baestevel/* ARGSUSED */
03831d35f7499c87d51205817c93e9a8d42c4baestevelsghsc_disconnect(caddr_t op_arg, hpc_slot_t sloth, void *data,
03831d35f7499c87d51205817c93e9a8d42c4baestevel * Disconnecting an empty or disconnected slot
03831d35f7499c87d51205817c93e9a8d42c4baestevel * does't make sense.
03831d35f7499c87d51205817c93e9a8d42c4baestevel rc = sghsc_scctl(SGHSC_SET_SLOT_POWER_OFF, sghsc->sghsc_node_id,
03831d35f7499c87d51205817c93e9a8d42c4baestevel cmn_err(CE_WARN, "sghsc%d: unable to poweroff slot %d for"
03831d35f7499c87d51205817c93e9a8d42c4baestevel * Entry point from the hotplug framework to do
03831d35f7499c87d51205817c93e9a8d42c4baestevel * the main hotplug operations
03831d35f7499c87d51205817c93e9a8d42c4baestevel * Return val: HPC_SUCCESS success on ops
03831d35f7499c87d51205817c93e9a8d42c4baestevel * HPC_NOT_SUPPORTED not supported feature
03831d35f7499c87d51205817c93e9a8d42c4baestevel * HPC_ERR_FAILED ops failed
03831d35f7499c87d51205817c93e9a8d42c4baestevel/*ARGSUSED*/
03831d35f7499c87d51205817c93e9a8d42c4baestevelsghsc_control(caddr_t op_arg, hpc_slot_t sloth, int request,
03831d35f7499c87d51205817c93e9a8d42c4baestevel cmn_err(CE_WARN, "sghsc%d: sghsc_control fails with slot = %d"
03831d35f7499c87d51205817c93e9a8d42c4baestevel " max = %d, sloth = 0x%p for node %d / board %d",
03831d35f7499c87d51205817c93e9a8d42c4baestevel /* arg == hpc_led_info_t */
03831d35f7499c87d51205817c93e9a8d42c4baestevel " HPC_CTRL_GET_LED_STATE for node %d / board %d slot %d",
03831d35f7499c87d51205817c93e9a8d42c4baestevel " HPC_CTRL_GET_LED_STATE "
03831d35f7499c87d51205817c93e9a8d42c4baestevel " unknown led state %d for node %d / board %d"
03831d35f7499c87d51205817c93e9a8d42c4baestevel /* arg == hpc_led_info_t */
03831d35f7499c87d51205817c93e9a8d42c4baestevel " HPC_CTRL_SET_LED_STATE for node %d / board %d slot %d",
03831d35f7499c87d51205817c93e9a8d42c4baestevel " LED writing not supported "));
03831d35f7499c87d51205817c93e9a8d42c4baestevel " LED not supported "));
03831d35f7499c87d51205817c93e9a8d42c4baestevel " HPC_CTRL_GET_SLOT_STATE for node %d / board %d slot %d",
03831d35f7499c87d51205817c93e9a8d42c4baestevel * Send mailbox cmd to SC to query the latest state
03831d35f7499c87d51205817c93e9a8d42c4baestevel rc = sghsc_scctl(SGHSC_GET_SLOT_STATUS, sghsc->sghsc_node_id,
03831d35f7499c87d51205817c93e9a8d42c4baestevel cmn_err(CE_NOTE, "sghsc%d: unable to stat slot %d for "
03831d35f7499c87d51205817c93e9a8d42c4baestevel * Update the cached state if needed. Initally all
03831d35f7499c87d51205817c93e9a8d42c4baestevel * slots are marked as empty for the Hot Plug Framwork.
03831d35f7499c87d51205817c93e9a8d42c4baestevel if ((result >> CPCI_STAT_SLOT_EMPTY_SHIFT) & ONE_BIT) {
03831d35f7499c87d51205817c93e9a8d42c4baestevel } else if ((result >> CPCI_STAT_POWER_ON_SHIFT) & ONE_BIT) {
03831d35f7499c87d51205817c93e9a8d42c4baestevel } else if (sghsc->sghsc_slot_table[slot].slot_status ==
03831d35f7499c87d51205817c93e9a8d42c4baestevel * No change
03831d35f7499c87d51205817c93e9a8d42c4baestevel " HPC_CTRL_DEV_CONFIGURED for node %d / board %d slot %d",
03831d35f7499c87d51205817c93e9a8d42c4baestevel " node %d / board %d slot %d configured",
03831d35f7499c87d51205817c93e9a8d42c4baestevel * This is important to tell SC:
03831d35f7499c87d51205817c93e9a8d42c4baestevel * "start looking for ENUMs"
03831d35f7499c87d51205817c93e9a8d42c4baestevel * due to unclean drivers, unconfigure may leave
03831d35f7499c87d51205817c93e9a8d42c4baestevel * some state on card, configure may actually
03831d35f7499c87d51205817c93e9a8d42c4baestevel * use these invalid values. therefore, may force
03831d35f7499c87d51205817c93e9a8d42c4baestevel * disconnect.
03831d35f7499c87d51205817c93e9a8d42c4baestevel "HPC_CTRL_DEV_UNCONFIGURED for node %d / board %d slot %d",
03831d35f7499c87d51205817c93e9a8d42c4baestevel "disconnect failed"));
03831d35f7499c87d51205817c93e9a8d42c4baestevel /* arg = hpc_board_type_t */
03831d35f7499c87d51205817c93e9a8d42c4baestevel " HPC_CTRL_GET_BOARD_TYPE for node %d / board %d slot %d",
03831d35f7499c87d51205817c93e9a8d42c4baestevel " HPC_CTRL_ENABLE_AUTOCFG for node %d / board %d slot %d",
03831d35f7499c87d51205817c93e9a8d42c4baestevel sghsc->sghsc_slot_table[slot].flags |= SGHSC_SLOT_AUTO_CFG_EN;
03831d35f7499c87d51205817c93e9a8d42c4baestevel (void) hpc_slot_event_notify(sloth, HPC_EVENT_ENABLE_ENUM,
03831d35f7499c87d51205817c93e9a8d42c4baestevel * Tell SC to start looking for ENUMs on this slot.
03831d35f7499c87d51205817c93e9a8d42c4baestevel rc = sghsc_scctl(SGHSC_SET_ENUM_CLEARED, sghsc->sghsc_node_id,
03831d35f7499c87d51205817c93e9a8d42c4baestevel " node %d / board %d, slot %d",
03831d35f7499c87d51205817c93e9a8d42c4baestevel " HPC_CTRL_DISABLE_AUTOCFG for node %d / board %d slot %d",
03831d35f7499c87d51205817c93e9a8d42c4baestevel sghsc->sghsc_slot_table[slot].flags &= ~SGHSC_SLOT_AUTO_CFG_EN;
03831d35f7499c87d51205817c93e9a8d42c4baestevel (void) hpc_slot_event_notify(sloth, HPC_EVENT_DISABLE_ENUM,
03831d35f7499c87d51205817c93e9a8d42c4baestevel /* need to add support for enable/disable_ENUM */
03831d35f7499c87d51205817c93e9a8d42c4baestevel "request (0x%x) not supported", sghsc->sghsc_instance,
03831d35f7499c87d51205817c93e9a8d42c4baestevel /* invalid request */
03831d35f7499c87d51205817c93e9a8d42c4baestevel * Read/write slot's led
03831d35f7499c87d51205817c93e9a8d42c4baestevel * Assume MUTEX_HELD
03831d35f7499c87d51205817c93e9a8d42c4baestevel * return: HPC_SUCCESS if the led's status is avaiable,
03831d35f7499c87d51205817c93e9a8d42c4baestevel * SC return status otherwise.
03831d35f7499c87d51205817c93e9a8d42c4baestevelsghsc_led_state(sghsc_t *sghsc, hpc_slot_t sloth, int op,
03831d35f7499c87d51205817c93e9a8d42c4baestevel rval = sghsc_scctl(SGHSC_GET_SLOT_STATUS, sghsc->sghsc_node_id,
03831d35f7499c87d51205817c93e9a8d42c4baestevel switch (op) {
03831d35f7499c87d51205817c93e9a8d42c4baestevel * sghsc_get_slotnum()
03831d35f7499c87d51205817c93e9a8d42c4baestevel * get slot number from the slot handle
03831d35f7499c87d51205817c93e9a8d42c4baestevel * returns non-negative value to indicate slot number
03831d35f7499c87d51205817c93e9a8d42c4baestevel * -1 for failure
03831d35f7499c87d51205817c93e9a8d42c4baestevel return (-1);
03831d35f7499c87d51205817c93e9a8d42c4baestevel return (i);
03831d35f7499c87d51205817c93e9a8d42c4baestevel return (-1);
03831d35f7499c87d51205817c93e9a8d42c4baestevel * sghsc_scctl()
03831d35f7499c87d51205817c93e9a8d42c4baestevel * mailbox interface
03831d35f7499c87d51205817c93e9a8d42c4baestevel * return result code from mailbox operation
03831d35f7499c87d51205817c93e9a8d42c4baestevelsghsc_scctl(int cmd, int node_id, int board, int slot, int *resultp)
03831d35f7499c87d51205817c93e9a8d42c4baestevel bitcmd_resp_t cmd_info_r, *cmd_info_r_p = &cmd_info_r;
03831d35f7499c87d51205817c93e9a8d42c4baestevel cmn_err(CE_WARN, "sghsc: unrecognized action code 0x%x\n",
03831d35f7499c87d51205817c93e9a8d42c4baestevel "sghsc: sending mbox command type=%d subtype=0x%x size=%d buf=%p",
03831d35f7499c87d51205817c93e9a8d42c4baestevel "sghsc: sending buf cmd_id=0x%x node_id=0x%x board=0x%x "
03831d35f7499c87d51205817c93e9a8d42c4baestevel "slot=0x%x info=0x%x", cmd_infop->cmd_id, cmd_infop->node_id,
03831d35f7499c87d51205817c93e9a8d42c4baestevel cmd_infop->board, cmd_infop->slot, cmd_infop->info));
03831d35f7499c87d51205817c93e9a8d42c4baestevel ret = sbbc_mbox_request_response(reqp, resp, sghsc_mbx_timeout);
03831d35f7499c87d51205817c93e9a8d42c4baestevel * The resp->msg_status field may contain an SC error or a common
03831d35f7499c87d51205817c93e9a8d42c4baestevel * error such as ETIMEDOUT.
03831d35f7499c87d51205817c93e9a8d42c4baestevel if ((ret != 0) || (resp->msg_status != SG_MBOX_STATUS_SUCCESS)) {
03831d35f7499c87d51205817c93e9a8d42c4baestevel DEBUGF(1, (CE_NOTE, "sghsc: mailbox command error = 0x%x, "
03831d35f7499c87d51205817c93e9a8d42c4baestevel return (-1);
03831d35f7499c87d51205817c93e9a8d42c4baestevel DEBUGF(1, (CE_NOTE, "sghsc: reply request status=0x%x",
03831d35f7499c87d51205817c93e9a8d42c4baestevel DEBUGF(1, (CE_NOTE, "sghsc: reply buf cmd_id=0x%x result=0x%x\n",
03831d35f7499c87d51205817c93e9a8d42c4baestevel DEBUGF(1, (CE_NOTE, "sghsc: node %d / board %d has %d slots",
03831d35f7499c87d51205817c93e9a8d42c4baestevel return (0);
03831d35f7499c87d51205817c93e9a8d42c4baestevel if ((cmd_info_r_p->result >> CPCI_STAT_POWER_ON_SHIFT) & ONE_BIT)
03831d35f7499c87d51205817c93e9a8d42c4baestevel if ((cmd_info_r_p->result >> CPCI_STAT_LED_POWER_SHIFT) & ONE_BIT)
03831d35f7499c87d51205817c93e9a8d42c4baestevel if ((cmd_info_r_p->result >> CPCI_STAT_LED_FAULT_SHIFT) & ONE_BIT)
03831d35f7499c87d51205817c93e9a8d42c4baestevel if ((cmd_info_r_p->result >> CPCI_STAT_LED_HP_SHIFT) & ONE_BIT)
03831d35f7499c87d51205817c93e9a8d42c4baestevel if ((cmd_info_r_p->result >> CPCI_STAT_SLOT_EMPTY_SHIFT) & ONE_BIT)
03831d35f7499c87d51205817c93e9a8d42c4baestevel tmp = ((cmd_info_r_p->result >> CPCI_STAT_HOT_SWAP_STATUS_SHIFT) &
03831d35f7499c87d51205817c93e9a8d42c4baestevel "sghsc: slot condition(hot swap status) is 0x%x", tmp));
03831d35f7499c87d51205817c93e9a8d42c4baestevel if (cmd_info_r_p->result & CPCI_GET_STAT_SLOT_HZ_CAP)
03831d35f7499c87d51205817c93e9a8d42c4baestevel if (cmd_info_r_p->result & CPCI_GET_STAT_SLOT_HZ_SET)
03831d35f7499c87d51205817c93e9a8d42c4baestevel if ((cmd_info_r_p->result >> CPCI_STAT_HEALTHY_SHIFT) & ONE_BIT)
03831d35f7499c87d51205817c93e9a8d42c4baestevel if ((cmd_info_r_p->result >> CPCI_STAT_RESET_SHIFT) & ONE_BIT)
03831d35f7499c87d51205817c93e9a8d42c4baestevel if (cmd_info_r_p->result & CPCI_GET_STAT_POWER_FAULT)
03831d35f7499c87d51205817c93e9a8d42c4baestevel if (cmd_info_r_p->result & CPCI_GET_STAT_PCI_PRESENT)
03831d35f7499c87d51205817c93e9a8d42c4baestevel return (0);
03831d35f7499c87d51205817c93e9a8d42c4baestevel * sghsc_freemem()
03831d35f7499c87d51205817c93e9a8d42c4baestevel * deallocates memory resources
03831d35f7499c87d51205817c93e9a8d42c4baestevel * Free up allocated resources
03831d35f7499c87d51205817c93e9a8d42c4baestevel * sghsc_register_slots => unregister all slots
193974072f41a843678abf5f61979c748687e66bSherry Moore hpc_free_slot_ops(sghsc->sghsc_slot_table[i].slot_ops);
03831d35f7499c87d51205817c93e9a8d42c4baestevel /* finally free up slot_table */
03831d35f7499c87d51205817c93e9a8d42c4baestevel (size_t)(sghsc->sghsc_num_slots * sizeof (sghsc_slot_t)));
03831d35f7499c87d51205817c93e9a8d42c4baestevel * sghsc_find_sloth()
03831d35f7499c87d51205817c93e9a8d42c4baestevel * Find slot handle by node id, board number and slot numbert
03831d35f7499c87d51205817c93e9a8d42c4baestevel * Returns slot handle or 0 if slot not found.
03831d35f7499c87d51205817c93e9a8d42c4baestevel for (instance = 0; instance < sghsc_maxinst; instance++) {
03831d35f7499c87d51205817c93e9a8d42c4baestevel sghsc = (sghsc_t *)ddi_get_soft_state(sghsc_state, instance);
03831d35f7499c87d51205817c93e9a8d42c4baestevel if (sghsc == NULL || sghsc->sghsc_node_id != node_id ||
03831d35f7499c87d51205817c93e9a8d42c4baestevel DEBUGF(1, (CE_NOTE, "sghsc_find_sloth on board %d at node %d"
03831d35f7499c87d51205817c93e9a8d42c4baestevel * Found matching slot, return handle.
03831d35f7499c87d51205817c93e9a8d42c4baestevel DEBUGF(1, (CE_WARN, "sghsc_find_sloth: slot %d not found for node %d"
03831d35f7499c87d51205817c93e9a8d42c4baestevel * sghsc_event_handler()
03831d35f7499c87d51205817c93e9a8d42c4baestevel * Event Handler. This is what for other platforms was an interrupt
03831d35f7499c87d51205817c93e9a8d42c4baestevel * Handler servicing events. It accepts an event and signals it to
03831d35f7499c87d51205817c93e9a8d42c4baestevel * non-interrupt thread.
03831d35f7499c87d51205817c93e9a8d42c4baestevel DEBUGF(1, (CE_NOTE, "sghsc: sghsc_event_handler called"))
03831d35f7499c87d51205817c93e9a8d42c4baestevel rsp_data = (sghsc_event_t *)(((sbbc_msg_t *)arg)->msg_buf);
03831d35f7499c87d51205817c93e9a8d42c4baestevel ("sghsc: sghsc_event_handler argument is null\n"));
03831d35f7499c87d51205817c93e9a8d42c4baestevel sloth = sghsc_find_sloth(rsp_data->node_id, rsp_data->board,
03831d35f7499c87d51205817c93e9a8d42c4baestevel * On a board disconnect sghsc soft state may not exist
03831d35f7499c87d51205817c93e9a8d42c4baestevel * when the interrupt occurs. We should treat these
03831d35f7499c87d51205817c93e9a8d42c4baestevel * interrupts as noise and but them.
03831d35f7499c87d51205817c93e9a8d42c4baestevel DEBUGF(1, (CE_WARN, "sghsc: slot info not available for"
03831d35f7499c87d51205817c93e9a8d42c4baestevel " node %d / board %d slot %d. CPCI event rejected",
03831d35f7499c87d51205817c93e9a8d42c4baestevel rsp_data->node_id, rsp_data->board, rsp_data->slot));
03831d35f7499c87d51205817c93e9a8d42c4baestevel enum_state = sghsc_find_softstate(rsp_data->node_id, rsp_data->board,
03831d35f7499c87d51205817c93e9a8d42c4baestevel cmn_err(CE_WARN, "sghsc: soft state not available for"
03831d35f7499c87d51205817c93e9a8d42c4baestevel DEBUGF(1, (CE_NOTE, "sghsc: node %d", rsp_data->node_id));
03831d35f7499c87d51205817c93e9a8d42c4baestevel DEBUGF(1, (CE_NOTE, "sghsc: board %d", rsp_data->board));
03831d35f7499c87d51205817c93e9a8d42c4baestevel DEBUGF(1, (CE_NOTE, "sghsc: slot %d", rsp_data->slot));
03831d35f7499c87d51205817c93e9a8d42c4baestevel DEBUGF(1, (CE_NOTE, "sghsc: event info %d", rsp_data->info));
03831d35f7499c87d51205817c93e9a8d42c4baestevel DEBUGF(1, (CE_NOTE, "sghsc: card inserted node %d / board %d"
03831d35f7499c87d51205817c93e9a8d42c4baestevel enum_state->sghsc_slot_table[rsp_data->slot].board_type =
03831d35f7499c87d51205817c93e9a8d42c4baestevel enum_state->sghsc_slot_table[rsp_data->slot].slot_status =
03831d35f7499c87d51205817c93e9a8d42c4baestevel DEBUGF(1, (CE_NOTE, "sghsc: card removed node %d / board %d"
03831d35f7499c87d51205817c93e9a8d42c4baestevel enum_state->sghsc_slot_table[rsp_data->slot].board_type =
03831d35f7499c87d51205817c93e9a8d42c4baestevel enum_state->sghsc_slot_table[rsp_data->slot].slot_status =
03831d35f7499c87d51205817c93e9a8d42c4baestevel DEBUGF(1, (CE_NOTE, "sghsc: power on node %d / board %d"
03831d35f7499c87d51205817c93e9a8d42c4baestevel DEBUGF(1, (CE_NOTE, "sghsc: power off node %d / board %d"
03831d35f7499c87d51205817c93e9a8d42c4baestevel DEBUGF(1, (CE_NOTE, "sghsc: healthy lost node %d / board %d"
03831d35f7499c87d51205817c93e9a8d42c4baestevel DEBUGF(1, (CE_NOTE, "sghsc: ENUM generated for node %d /"
03831d35f7499c87d51205817c93e9a8d42c4baestevel "board %d slot %d", rsp_data->node_id, rsp_data->board,
03831d35f7499c87d51205817c93e9a8d42c4baestevel DEBUGF(1, (CE_NOTE, "sghsc: unrecognized event info for"
03831d35f7499c87d51205817c93e9a8d42c4baestevel * Signal the ENUM event to the non-interrupt thread as the Hot
03831d35f7499c87d51205817c93e9a8d42c4baestevel * Plug Framework will eventually call sghsc_control() but all
03831d35f7499c87d51205817c93e9a8d42c4baestevel * the mailbox messages are not allowed from interrupt context.
03831d35f7499c87d51205817c93e9a8d42c4baestevel if (sghsc_rb_put(&sghsc_rb_header, rsp_data) != DDI_SUCCESS) {
193974072f41a843678abf5f61979c748687e66bSherry Moore cmn_err(CE_WARN, "sghsc: no space to store #ENUM info");
03831d35f7499c87d51205817c93e9a8d42c4baestevel * sghsc_event_thread_code()
03831d35f7499c87d51205817c93e9a8d42c4baestevel * Event Thread. This is non-interrupt thread servicing #ENUM, Insert,
03831d35f7499c87d51205817c93e9a8d42c4baestevel * Remove, Power on/off, Healthy lost events.
03831d35f7499c87d51205817c93e9a8d42c4baestevel * Wait for Event handler to signal event or self destruction.
03831d35f7499c87d51205817c93e9a8d42c4baestevel * Assuming the mutex will be automatically reaccuired.
03831d35f7499c87d51205817c93e9a8d42c4baestevel cv_wait(&sghsc_event_thread_cv, &sghsc_event_thread_mutex);
03831d35f7499c87d51205817c93e9a8d42c4baestevel * Pick up all the relevant events from the ring buffer.
03831d35f7499c87d51205817c93e9a8d42c4baestevel * Insert event leads only to the electrical
03831d35f7499c87d51205817c93e9a8d42c4baestevel * connection.
03831d35f7499c87d51205817c93e9a8d42c4baestevel " could not connect inserted card,"
03831d35f7499c87d51205817c93e9a8d42c4baestevel " node %d / board %d slot %d",
03831d35f7499c87d51205817c93e9a8d42c4baestevel * ENUM event received.
03831d35f7499c87d51205817c93e9a8d42c4baestevel * Reset ENUM and notify SC to poll for the next one.
03831d35f7499c87d51205817c93e9a8d42c4baestevel rc = hpc_slot_event_notify(sloth, HPC_EVENT_CLEAR_ENUM,
03831d35f7499c87d51205817c93e9a8d42c4baestevel "sghsc: unable to clear ENUM"));
03831d35f7499c87d51205817c93e9a8d42c4baestevel "sghsc: unable to ACK cleared ENUM"));
03831d35f7499c87d51205817c93e9a8d42c4baestevel * process the ENUM.
03831d35f7499c87d51205817c93e9a8d42c4baestevel "sghsc: could not process ENUM"));
03831d35f7499c87d51205817c93e9a8d42c4baestevel * sghsc_find_softstate()
03831d35f7499c87d51205817c93e9a8d42c4baestevel * Find softstate by node id and board number. Slot number is used for
03831d35f7499c87d51205817c93e9a8d42c4baestevel * verification.
03831d35f7499c87d51205817c93e9a8d42c4baestevel * Returns board's softstate or 0 if not found.
03831d35f7499c87d51205817c93e9a8d42c4baestevelsghsc_find_softstate(int node_id, int board, int slot)
03831d35f7499c87d51205817c93e9a8d42c4baestevel for (instance = 0; instance < sghsc_maxinst; instance++) {
03831d35f7499c87d51205817c93e9a8d42c4baestevel sghsc = (sghsc_t *)ddi_get_soft_state(sghsc_state, instance);
03831d35f7499c87d51205817c93e9a8d42c4baestevel if (sghsc == NULL || sghsc->sghsc_node_id != node_id ||
03831d35f7499c87d51205817c93e9a8d42c4baestevel * Found matching data, return soft state.
03831d35f7499c87d51205817c93e9a8d42c4baestevel * sghsc_rb_setup()
03831d35f7499c87d51205817c93e9a8d42c4baestevel * Initialize the event ring buffer with a fixed size. It may require
03831d35f7499c87d51205817c93e9a8d42c4baestevel * a more elaborate scheme with buffer extension
03831d35f7499c87d51205817c93e9a8d42c4baestevel * Allocate space for event ring buffer
03831d35f7499c87d51205817c93e9a8d42c4baestevel * sghsc_rb_teardown()
03831d35f7499c87d51205817c93e9a8d42c4baestevel * Free event ring buffer resources.
03831d35f7499c87d51205817c93e9a8d42c4baestevel * Deallocate space for event ring buffer
03831d35f7499c87d51205817c93e9a8d42c4baestevel * sghsc_rb_put()
03831d35f7499c87d51205817c93e9a8d42c4baestevel * Insert an event info into the event ring buffer.
03831d35f7499c87d51205817c93e9a8d42c4baestevel * Returns DDI_FAILURE if the buffer is full, DDI_SUCCESS otherwise
03831d35f7499c87d51205817c93e9a8d42c4baestevelsghsc_rb_put(sghsc_rb_head_t *rb_head, sghsc_event_t *event)
2bc987325e3ded1865bff043128661815c4690b9Richard Lowe rb_head->put_idx = (rb_head->put_idx + 1) & (rb_head->size - 1);
03831d35f7499c87d51205817c93e9a8d42c4baestevel * sghsc_rb_get()
03831d35f7499c87d51205817c93e9a8d42c4baestevel * Remove an event info from the event ring buffer.
03831d35f7499c87d51205817c93e9a8d42c4baestevel * Returns DDI_FAILURE if the buffer is empty, DDI_SUCCESS otherwise.
03831d35f7499c87d51205817c93e9a8d42c4baestevelsghsc_rb_get(sghsc_rb_head_t *rb_head, sghsc_event_t *event)
2bc987325e3ded1865bff043128661815c4690b9Richard Lowe rb_head->get_idx = (rb_head->get_idx + 1) & (rb_head->size - 1);