fa1c1e8f1e
Hook the scsi_host_template functions in libsas to delegate functionality to libata when appropriate. Signed-off-by: Darrick J. Wong <djwong@us.ibm.com> Misc code changes and merge fixes and update for libata->drivers/ata move Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
779 lines
20 KiB
C
779 lines
20 KiB
C
/*
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* Serial Attached SCSI (SAS) Discover process
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*
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* Copyright (C) 2005 Adaptec, Inc. All rights reserved.
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* Copyright (C) 2005 Luben Tuikov <luben_tuikov@adaptec.com>
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*
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* This file is licensed under GPLv2.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of the
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* License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*
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*/
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#include <linux/pci.h>
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#include <linux/scatterlist.h>
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#include <scsi/scsi_host.h>
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#include <scsi/scsi_eh.h>
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#include "sas_internal.h"
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#include <scsi/scsi_transport.h>
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#include <scsi/scsi_transport_sas.h>
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#include "../scsi_sas_internal.h"
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/* ---------- Basic task processing for discovery purposes ---------- */
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void sas_init_dev(struct domain_device *dev)
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{
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INIT_LIST_HEAD(&dev->siblings);
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INIT_LIST_HEAD(&dev->dev_list_node);
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switch (dev->dev_type) {
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case SAS_END_DEV:
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break;
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case EDGE_DEV:
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case FANOUT_DEV:
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INIT_LIST_HEAD(&dev->ex_dev.children);
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break;
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case SATA_DEV:
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case SATA_PM:
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case SATA_PM_PORT:
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INIT_LIST_HEAD(&dev->sata_dev.children);
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break;
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default:
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break;
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}
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}
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static void sas_task_timedout(unsigned long _task)
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{
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struct sas_task *task = (void *) _task;
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unsigned long flags;
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spin_lock_irqsave(&task->task_state_lock, flags);
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if (!(task->task_state_flags & SAS_TASK_STATE_DONE))
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task->task_state_flags |= SAS_TASK_STATE_ABORTED;
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spin_unlock_irqrestore(&task->task_state_lock, flags);
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complete(&task->completion);
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}
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static void sas_disc_task_done(struct sas_task *task)
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{
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if (!del_timer(&task->timer))
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return;
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complete(&task->completion);
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}
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#define SAS_DEV_TIMEOUT 10
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/**
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* sas_execute_task -- Basic task processing for discovery
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* @task: the task to be executed
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* @buffer: pointer to buffer to do I/O
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* @size: size of @buffer
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* @pci_dma_dir: PCI_DMA_...
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*/
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static int sas_execute_task(struct sas_task *task, void *buffer, int size,
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int pci_dma_dir)
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{
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int res = 0;
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struct scatterlist *scatter = NULL;
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struct task_status_struct *ts = &task->task_status;
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int num_scatter = 0;
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int retries = 0;
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struct sas_internal *i =
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to_sas_internal(task->dev->port->ha->core.shost->transportt);
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if (pci_dma_dir != PCI_DMA_NONE) {
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scatter = kzalloc(sizeof(*scatter), GFP_KERNEL);
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if (!scatter)
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goto out;
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sg_init_one(scatter, buffer, size);
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num_scatter = 1;
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}
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task->task_proto = task->dev->tproto;
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task->scatter = scatter;
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task->num_scatter = num_scatter;
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task->total_xfer_len = size;
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task->data_dir = pci_dma_dir;
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task->task_done = sas_disc_task_done;
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for (retries = 0; retries < 5; retries++) {
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task->task_state_flags = SAS_TASK_STATE_PENDING;
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init_completion(&task->completion);
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task->timer.data = (unsigned long) task;
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task->timer.function = sas_task_timedout;
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task->timer.expires = jiffies + SAS_DEV_TIMEOUT*HZ;
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add_timer(&task->timer);
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res = i->dft->lldd_execute_task(task, 1, GFP_KERNEL);
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if (res) {
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del_timer(&task->timer);
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SAS_DPRINTK("executing SAS discovery task failed:%d\n",
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res);
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goto ex_err;
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}
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wait_for_completion(&task->completion);
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res = -ETASK;
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if (task->task_state_flags & SAS_TASK_STATE_ABORTED) {
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int res2;
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SAS_DPRINTK("task aborted, flags:0x%x\n",
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task->task_state_flags);
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res2 = i->dft->lldd_abort_task(task);
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SAS_DPRINTK("came back from abort task\n");
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if (!(task->task_state_flags & SAS_TASK_STATE_DONE)) {
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if (res2 == TMF_RESP_FUNC_COMPLETE)
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continue; /* Retry the task */
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else
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goto ex_err;
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}
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}
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if (task->task_status.stat == SAM_BUSY ||
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task->task_status.stat == SAM_TASK_SET_FULL ||
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task->task_status.stat == SAS_QUEUE_FULL) {
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SAS_DPRINTK("task: q busy, sleeping...\n");
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schedule_timeout_interruptible(HZ);
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} else if (task->task_status.stat == SAM_CHECK_COND) {
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struct scsi_sense_hdr shdr;
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if (!scsi_normalize_sense(ts->buf, ts->buf_valid_size,
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&shdr)) {
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SAS_DPRINTK("couldn't normalize sense\n");
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continue;
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}
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if ((shdr.sense_key == 6 && shdr.asc == 0x29) ||
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(shdr.sense_key == 2 && shdr.asc == 4 &&
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shdr.ascq == 1)) {
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SAS_DPRINTK("device %016llx LUN: %016llx "
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"powering up or not ready yet, "
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"sleeping...\n",
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SAS_ADDR(task->dev->sas_addr),
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SAS_ADDR(task->ssp_task.LUN));
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schedule_timeout_interruptible(5*HZ);
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} else if (shdr.sense_key == 1) {
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res = 0;
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break;
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} else if (shdr.sense_key == 5) {
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break;
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} else {
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SAS_DPRINTK("dev %016llx LUN: %016llx "
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"sense key:0x%x ASC:0x%x ASCQ:0x%x"
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"\n",
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SAS_ADDR(task->dev->sas_addr),
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SAS_ADDR(task->ssp_task.LUN),
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shdr.sense_key,
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shdr.asc, shdr.ascq);
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}
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} else if (task->task_status.resp != SAS_TASK_COMPLETE ||
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task->task_status.stat != SAM_GOOD) {
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SAS_DPRINTK("task finished with resp:0x%x, "
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"stat:0x%x\n",
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task->task_status.resp,
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task->task_status.stat);
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goto ex_err;
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} else {
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res = 0;
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break;
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}
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}
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ex_err:
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if (pci_dma_dir != PCI_DMA_NONE)
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kfree(scatter);
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out:
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return res;
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}
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/* ---------- Domain device discovery ---------- */
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/**
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* sas_get_port_device -- Discover devices which caused port creation
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* @port: pointer to struct sas_port of interest
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*
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* Devices directly attached to a HA port, have no parent. This is
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* how we know they are (domain) "root" devices. All other devices
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* do, and should have their "parent" pointer set appropriately as
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* soon as a child device is discovered.
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*/
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static int sas_get_port_device(struct asd_sas_port *port)
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{
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unsigned long flags;
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struct asd_sas_phy *phy;
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struct sas_rphy *rphy;
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struct domain_device *dev;
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dev = kzalloc(sizeof(*dev), GFP_KERNEL);
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if (!dev)
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return -ENOMEM;
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spin_lock_irqsave(&port->phy_list_lock, flags);
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if (list_empty(&port->phy_list)) {
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spin_unlock_irqrestore(&port->phy_list_lock, flags);
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kfree(dev);
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return -ENODEV;
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}
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phy = container_of(port->phy_list.next, struct asd_sas_phy, port_phy_el);
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spin_lock(&phy->frame_rcvd_lock);
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memcpy(dev->frame_rcvd, phy->frame_rcvd, min(sizeof(dev->frame_rcvd),
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(size_t)phy->frame_rcvd_size));
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spin_unlock(&phy->frame_rcvd_lock);
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spin_unlock_irqrestore(&port->phy_list_lock, flags);
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if (dev->frame_rcvd[0] == 0x34 && port->oob_mode == SATA_OOB_MODE) {
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struct dev_to_host_fis *fis =
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(struct dev_to_host_fis *) dev->frame_rcvd;
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if (fis->interrupt_reason == 1 && fis->lbal == 1 &&
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fis->byte_count_low==0x69 && fis->byte_count_high == 0x96
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&& (fis->device & ~0x10) == 0)
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dev->dev_type = SATA_PM;
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else
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dev->dev_type = SATA_DEV;
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dev->tproto = SATA_PROTO;
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} else {
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struct sas_identify_frame *id =
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(struct sas_identify_frame *) dev->frame_rcvd;
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dev->dev_type = id->dev_type;
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dev->iproto = id->initiator_bits;
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dev->tproto = id->target_bits;
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}
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sas_init_dev(dev);
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switch (dev->dev_type) {
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case SAS_END_DEV:
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case SATA_DEV:
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rphy = sas_end_device_alloc(port->port);
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break;
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case EDGE_DEV:
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rphy = sas_expander_alloc(port->port,
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SAS_EDGE_EXPANDER_DEVICE);
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break;
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case FANOUT_DEV:
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rphy = sas_expander_alloc(port->port,
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SAS_FANOUT_EXPANDER_DEVICE);
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break;
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default:
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printk("ERROR: Unidentified device type %d\n", dev->dev_type);
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rphy = NULL;
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break;
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}
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if (!rphy) {
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kfree(dev);
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return -ENODEV;
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}
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rphy->identify.phy_identifier = phy->phy->identify.phy_identifier;
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memcpy(dev->sas_addr, port->attached_sas_addr, SAS_ADDR_SIZE);
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sas_fill_in_rphy(dev, rphy);
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sas_hash_addr(dev->hashed_sas_addr, dev->sas_addr);
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port->port_dev = dev;
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dev->port = port;
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dev->linkrate = port->linkrate;
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dev->min_linkrate = port->linkrate;
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dev->max_linkrate = port->linkrate;
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dev->pathways = port->num_phys;
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memset(port->disc.fanout_sas_addr, 0, SAS_ADDR_SIZE);
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memset(port->disc.eeds_a, 0, SAS_ADDR_SIZE);
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memset(port->disc.eeds_b, 0, SAS_ADDR_SIZE);
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port->disc.max_level = 0;
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dev->rphy = rphy;
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spin_lock(&port->dev_list_lock);
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list_add_tail(&dev->dev_list_node, &port->dev_list);
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spin_unlock(&port->dev_list_lock);
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return 0;
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}
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/* ---------- Discover and Revalidate ---------- */
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/* ---------- SATA ---------- */
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static void sas_get_ata_command_set(struct domain_device *dev)
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{
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struct dev_to_host_fis *fis =
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(struct dev_to_host_fis *) dev->frame_rcvd;
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if ((fis->sector_count == 1 && /* ATA */
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fis->lbal == 1 &&
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fis->lbam == 0 &&
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fis->lbah == 0 &&
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fis->device == 0)
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||
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(fis->sector_count == 0 && /* CE-ATA (mATA) */
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fis->lbal == 0 &&
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fis->lbam == 0xCE &&
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fis->lbah == 0xAA &&
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(fis->device & ~0x10) == 0))
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dev->sata_dev.command_set = ATA_COMMAND_SET;
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else if ((fis->interrupt_reason == 1 && /* ATAPI */
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fis->lbal == 1 &&
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fis->byte_count_low == 0x14 &&
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fis->byte_count_high == 0xEB &&
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(fis->device & ~0x10) == 0))
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dev->sata_dev.command_set = ATAPI_COMMAND_SET;
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else if ((fis->sector_count == 1 && /* SEMB */
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fis->lbal == 1 &&
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fis->lbam == 0x3C &&
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fis->lbah == 0xC3 &&
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fis->device == 0)
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||
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(fis->interrupt_reason == 1 && /* SATA PM */
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fis->lbal == 1 &&
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fis->byte_count_low == 0x69 &&
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fis->byte_count_high == 0x96 &&
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(fis->device & ~0x10) == 0))
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/* Treat it as a superset? */
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dev->sata_dev.command_set = ATAPI_COMMAND_SET;
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}
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/**
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* sas_issue_ata_cmd -- Basic SATA command processing for discovery
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* @dev: the device to send the command to
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* @command: the command register
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* @features: the features register
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* @buffer: pointer to buffer to do I/O
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* @size: size of @buffer
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* @pci_dma_dir: PCI_DMA_...
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*/
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static int sas_issue_ata_cmd(struct domain_device *dev, u8 command,
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u8 features, void *buffer, int size,
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int pci_dma_dir)
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{
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int res = 0;
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struct sas_task *task;
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struct dev_to_host_fis *d2h_fis = (struct dev_to_host_fis *)
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&dev->frame_rcvd[0];
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res = -ENOMEM;
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task = sas_alloc_task(GFP_KERNEL);
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if (!task)
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goto out;
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task->dev = dev;
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task->ata_task.fis.command = command;
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task->ata_task.fis.features = features;
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task->ata_task.fis.device = d2h_fis->device;
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task->ata_task.retry_count = 1;
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res = sas_execute_task(task, buffer, size, pci_dma_dir);
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sas_free_task(task);
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out:
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return res;
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}
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static void sas_sata_propagate_sas_addr(struct domain_device *dev)
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{
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unsigned long flags;
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struct asd_sas_port *port = dev->port;
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struct asd_sas_phy *phy;
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BUG_ON(dev->parent);
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memcpy(port->attached_sas_addr, dev->sas_addr, SAS_ADDR_SIZE);
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spin_lock_irqsave(&port->phy_list_lock, flags);
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list_for_each_entry(phy, &port->phy_list, port_phy_el)
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memcpy(phy->attached_sas_addr, dev->sas_addr, SAS_ADDR_SIZE);
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spin_unlock_irqrestore(&port->phy_list_lock, flags);
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}
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#define ATA_IDENTIFY_DEV 0xEC
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#define ATA_IDENTIFY_PACKET_DEV 0xA1
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#define ATA_SET_FEATURES 0xEF
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#define ATA_FEATURE_PUP_STBY_SPIN_UP 0x07
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/**
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* sas_discover_sata_dev -- discover a STP/SATA device (SATA_DEV)
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* @dev: STP/SATA device of interest (ATA/ATAPI)
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*
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* The LLDD has already been notified of this device, so that we can
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* send FISes to it. Here we try to get IDENTIFY DEVICE or IDENTIFY
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* PACKET DEVICE, if ATAPI device, so that the LLDD can fine-tune its
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* performance for this device.
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*/
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static int sas_discover_sata_dev(struct domain_device *dev)
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{
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int res;
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__le16 *identify_x;
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u8 command;
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identify_x = kzalloc(512, GFP_KERNEL);
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if (!identify_x)
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return -ENOMEM;
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if (dev->sata_dev.command_set == ATA_COMMAND_SET) {
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dev->sata_dev.identify_device = identify_x;
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command = ATA_IDENTIFY_DEV;
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} else {
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dev->sata_dev.identify_packet_device = identify_x;
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command = ATA_IDENTIFY_PACKET_DEV;
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}
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res = sas_issue_ata_cmd(dev, command, 0, identify_x, 512,
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PCI_DMA_FROMDEVICE);
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if (res)
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goto out_err;
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/* lives on the media? */
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if (le16_to_cpu(identify_x[0]) & 4) {
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/* incomplete response */
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SAS_DPRINTK("sending SET FEATURE/PUP_STBY_SPIN_UP to "
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"dev %llx\n", SAS_ADDR(dev->sas_addr));
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if (!le16_to_cpu(identify_x[83] & (1<<6)))
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goto cont1;
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res = sas_issue_ata_cmd(dev, ATA_SET_FEATURES,
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ATA_FEATURE_PUP_STBY_SPIN_UP,
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NULL, 0, PCI_DMA_NONE);
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if (res)
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goto cont1;
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schedule_timeout_interruptible(5*HZ); /* More time? */
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res = sas_issue_ata_cmd(dev, command, 0, identify_x, 512,
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PCI_DMA_FROMDEVICE);
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if (res)
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goto out_err;
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}
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cont1:
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/* Get WWN */
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if (dev->port->oob_mode != SATA_OOB_MODE) {
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memcpy(dev->sas_addr, dev->sata_dev.rps_resp.rps.stp_sas_addr,
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SAS_ADDR_SIZE);
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} else if (dev->sata_dev.command_set == ATA_COMMAND_SET &&
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(le16_to_cpu(dev->sata_dev.identify_device[108]) & 0xF000)
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== 0x5000) {
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int i;
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for (i = 0; i < 4; i++) {
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dev->sas_addr[2*i] =
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(le16_to_cpu(dev->sata_dev.identify_device[108+i]) & 0xFF00) >> 8;
|
|
dev->sas_addr[2*i+1] =
|
|
le16_to_cpu(dev->sata_dev.identify_device[108+i]) & 0x00FF;
|
|
}
|
|
}
|
|
sas_hash_addr(dev->hashed_sas_addr, dev->sas_addr);
|
|
if (!dev->parent)
|
|
sas_sata_propagate_sas_addr(dev);
|
|
|
|
/* XXX Hint: register this SATA device with SATL.
|
|
When this returns, dev->sata_dev->lu is alive and
|
|
present.
|
|
sas_satl_register_dev(dev);
|
|
*/
|
|
|
|
sas_fill_in_rphy(dev, dev->rphy);
|
|
|
|
res = sas_rphy_add(dev->rphy);
|
|
if (res)
|
|
goto out_err;
|
|
|
|
return res;
|
|
out_err:
|
|
dev->sata_dev.identify_packet_device = NULL;
|
|
dev->sata_dev.identify_device = NULL;
|
|
kfree(identify_x);
|
|
return res;
|
|
}
|
|
|
|
static int sas_discover_sata_pm(struct domain_device *dev)
|
|
{
|
|
return -ENODEV;
|
|
}
|
|
|
|
int sas_notify_lldd_dev_found(struct domain_device *dev)
|
|
{
|
|
int res = 0;
|
|
struct sas_ha_struct *sas_ha = dev->port->ha;
|
|
struct Scsi_Host *shost = sas_ha->core.shost;
|
|
struct sas_internal *i = to_sas_internal(shost->transportt);
|
|
|
|
if (i->dft->lldd_dev_found) {
|
|
res = i->dft->lldd_dev_found(dev);
|
|
if (res) {
|
|
printk("sas: driver on pcidev %s cannot handle "
|
|
"device %llx, error:%d\n",
|
|
pci_name(sas_ha->pcidev),
|
|
SAS_ADDR(dev->sas_addr), res);
|
|
}
|
|
}
|
|
return res;
|
|
}
|
|
|
|
|
|
void sas_notify_lldd_dev_gone(struct domain_device *dev)
|
|
{
|
|
struct sas_ha_struct *sas_ha = dev->port->ha;
|
|
struct Scsi_Host *shost = sas_ha->core.shost;
|
|
struct sas_internal *i = to_sas_internal(shost->transportt);
|
|
|
|
if (i->dft->lldd_dev_gone)
|
|
i->dft->lldd_dev_gone(dev);
|
|
}
|
|
|
|
/* ---------- Common/dispatchers ---------- */
|
|
|
|
/**
|
|
* sas_discover_sata -- discover an STP/SATA domain device
|
|
* @dev: pointer to struct domain_device of interest
|
|
*
|
|
* First we notify the LLDD of this device, so we can send frames to
|
|
* it. Then depending on the type of device we call the appropriate
|
|
* discover functions. Once device discover is done, we notify the
|
|
* LLDD so that it can fine-tune its parameters for the device, by
|
|
* removing it and then adding it. That is, the second time around,
|
|
* the driver would have certain fields, that it is looking at, set.
|
|
* Finally we initialize the kobj so that the device can be added to
|
|
* the system at registration time. Devices directly attached to a HA
|
|
* port, have no parents. All other devices do, and should have their
|
|
* "parent" pointer set appropriately before calling this function.
|
|
*/
|
|
int sas_discover_sata(struct domain_device *dev)
|
|
{
|
|
int res;
|
|
|
|
sas_get_ata_command_set(dev);
|
|
|
|
res = sas_notify_lldd_dev_found(dev);
|
|
if (res)
|
|
goto out_err2;
|
|
|
|
switch (dev->dev_type) {
|
|
case SATA_DEV:
|
|
res = sas_discover_sata_dev(dev);
|
|
break;
|
|
case SATA_PM:
|
|
res = sas_discover_sata_pm(dev);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
if (res)
|
|
goto out_err;
|
|
|
|
sas_notify_lldd_dev_gone(dev);
|
|
res = sas_notify_lldd_dev_found(dev);
|
|
if (res)
|
|
goto out_err2;
|
|
|
|
res = sas_rphy_add(dev->rphy);
|
|
if (res)
|
|
goto out_err;
|
|
|
|
return res;
|
|
|
|
out_err:
|
|
sas_notify_lldd_dev_gone(dev);
|
|
out_err2:
|
|
return res;
|
|
}
|
|
|
|
/**
|
|
* sas_discover_end_dev -- discover an end device (SSP, etc)
|
|
* @end: pointer to domain device of interest
|
|
*
|
|
* See comment in sas_discover_sata().
|
|
*/
|
|
int sas_discover_end_dev(struct domain_device *dev)
|
|
{
|
|
int res;
|
|
|
|
res = sas_notify_lldd_dev_found(dev);
|
|
if (res)
|
|
goto out_err2;
|
|
|
|
res = sas_rphy_add(dev->rphy);
|
|
if (res)
|
|
goto out_err;
|
|
|
|
return 0;
|
|
|
|
out_err:
|
|
sas_notify_lldd_dev_gone(dev);
|
|
out_err2:
|
|
return res;
|
|
}
|
|
|
|
/* ---------- Device registration and unregistration ---------- */
|
|
|
|
static inline void sas_unregister_common_dev(struct domain_device *dev)
|
|
{
|
|
sas_notify_lldd_dev_gone(dev);
|
|
if (!dev->parent)
|
|
dev->port->port_dev = NULL;
|
|
else
|
|
list_del_init(&dev->siblings);
|
|
list_del_init(&dev->dev_list_node);
|
|
}
|
|
|
|
void sas_unregister_dev(struct domain_device *dev)
|
|
{
|
|
if (dev->rphy) {
|
|
sas_remove_children(&dev->rphy->dev);
|
|
sas_rphy_delete(dev->rphy);
|
|
dev->rphy = NULL;
|
|
}
|
|
if (dev->dev_type == EDGE_DEV || dev->dev_type == FANOUT_DEV) {
|
|
/* remove the phys and ports, everything else should be gone */
|
|
kfree(dev->ex_dev.ex_phy);
|
|
dev->ex_dev.ex_phy = NULL;
|
|
}
|
|
sas_unregister_common_dev(dev);
|
|
}
|
|
|
|
void sas_unregister_domain_devices(struct asd_sas_port *port)
|
|
{
|
|
struct domain_device *dev, *n;
|
|
|
|
list_for_each_entry_safe_reverse(dev,n,&port->dev_list,dev_list_node)
|
|
sas_unregister_dev(dev);
|
|
|
|
port->port->rphy = NULL;
|
|
|
|
}
|
|
|
|
/* ---------- Discovery and Revalidation ---------- */
|
|
|
|
/**
|
|
* sas_discover_domain -- discover the domain
|
|
* @port: port to the domain of interest
|
|
*
|
|
* NOTE: this process _must_ quit (return) as soon as any connection
|
|
* errors are encountered. Connection recovery is done elsewhere.
|
|
* Discover process only interrogates devices in order to discover the
|
|
* domain.
|
|
*/
|
|
static void sas_discover_domain(struct work_struct *work)
|
|
{
|
|
struct domain_device *dev;
|
|
int error = 0;
|
|
struct sas_discovery_event *ev =
|
|
container_of(work, struct sas_discovery_event, work);
|
|
struct asd_sas_port *port = ev->port;
|
|
|
|
sas_begin_event(DISCE_DISCOVER_DOMAIN, &port->disc.disc_event_lock,
|
|
&port->disc.pending);
|
|
|
|
if (port->port_dev)
|
|
return;
|
|
|
|
error = sas_get_port_device(port);
|
|
if (error)
|
|
return;
|
|
dev = port->port_dev;
|
|
|
|
SAS_DPRINTK("DOING DISCOVERY on port %d, pid:%d\n", port->id,
|
|
current->pid);
|
|
|
|
switch (dev->dev_type) {
|
|
case SAS_END_DEV:
|
|
error = sas_discover_end_dev(dev);
|
|
break;
|
|
case EDGE_DEV:
|
|
case FANOUT_DEV:
|
|
error = sas_discover_root_expander(dev);
|
|
break;
|
|
case SATA_DEV:
|
|
case SATA_PM:
|
|
error = sas_discover_sata(dev);
|
|
break;
|
|
default:
|
|
SAS_DPRINTK("unhandled device %d\n", dev->dev_type);
|
|
break;
|
|
}
|
|
|
|
if (error) {
|
|
sas_rphy_free(dev->rphy);
|
|
dev->rphy = NULL;
|
|
|
|
spin_lock(&port->dev_list_lock);
|
|
list_del_init(&dev->dev_list_node);
|
|
spin_unlock(&port->dev_list_lock);
|
|
|
|
kfree(dev); /* not kobject_register-ed yet */
|
|
port->port_dev = NULL;
|
|
}
|
|
|
|
SAS_DPRINTK("DONE DISCOVERY on port %d, pid:%d, result:%d\n", port->id,
|
|
current->pid, error);
|
|
}
|
|
|
|
static void sas_revalidate_domain(struct work_struct *work)
|
|
{
|
|
int res = 0;
|
|
struct sas_discovery_event *ev =
|
|
container_of(work, struct sas_discovery_event, work);
|
|
struct asd_sas_port *port = ev->port;
|
|
|
|
sas_begin_event(DISCE_REVALIDATE_DOMAIN, &port->disc.disc_event_lock,
|
|
&port->disc.pending);
|
|
|
|
SAS_DPRINTK("REVALIDATING DOMAIN on port %d, pid:%d\n", port->id,
|
|
current->pid);
|
|
if (port->port_dev)
|
|
res = sas_ex_revalidate_domain(port->port_dev);
|
|
|
|
SAS_DPRINTK("done REVALIDATING DOMAIN on port %d, pid:%d, res 0x%x\n",
|
|
port->id, current->pid, res);
|
|
}
|
|
|
|
/* ---------- Events ---------- */
|
|
|
|
int sas_discover_event(struct asd_sas_port *port, enum discover_event ev)
|
|
{
|
|
struct sas_discovery *disc;
|
|
|
|
if (!port)
|
|
return 0;
|
|
disc = &port->disc;
|
|
|
|
BUG_ON(ev >= DISC_NUM_EVENTS);
|
|
|
|
sas_queue_event(ev, &disc->disc_event_lock, &disc->pending,
|
|
&disc->disc_work[ev].work, port->ha);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* sas_init_disc -- initialize the discovery struct in the port
|
|
* @port: pointer to struct port
|
|
*
|
|
* Called when the ports are being initialized.
|
|
*/
|
|
void sas_init_disc(struct sas_discovery *disc, struct asd_sas_port *port)
|
|
{
|
|
int i;
|
|
|
|
static const work_func_t sas_event_fns[DISC_NUM_EVENTS] = {
|
|
[DISCE_DISCOVER_DOMAIN] = sas_discover_domain,
|
|
[DISCE_REVALIDATE_DOMAIN] = sas_revalidate_domain,
|
|
};
|
|
|
|
spin_lock_init(&disc->disc_event_lock);
|
|
disc->pending = 0;
|
|
for (i = 0; i < DISC_NUM_EVENTS; i++) {
|
|
INIT_WORK(&disc->disc_work[i].work, sas_event_fns[i]);
|
|
disc->disc_work[i].port = port;
|
|
}
|
|
}
|