summaryrefslogtreecommitdiffstats
path: root/drivers/scsi/libsas
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@woody.linux-foundation.org>2007-07-22 11:36:49 -0700
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-07-22 11:36:49 -0700
commite6f194d8f6f50da6837af637b2fd839c34185f7a (patch)
treef3c479a2bc24d49a150ff183e2614ee0f76cb366 /drivers/scsi/libsas
parent7578634990fb47cc30083fbd812689aa6deacfc0 (diff)
parentb91421749a1840148d8c81637c03c0ace3f35269 (diff)
downloadop-kernel-dev-e6f194d8f6f50da6837af637b2fd839c34185f7a.zip
op-kernel-dev-e6f194d8f6f50da6837af637b2fd839c34185f7a.tar.gz
Merge master.kernel.org:/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6
* master.kernel.org:/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6: (60 commits) [SCSI] libsas: make ATA functions selectable by a config option [SCSI] bsg: unexport sg v3 helper functions [SCSI] bsg: fix bsg_unregister_queue [SCSI] bsg: make class backlinks [SCSI] 3w-9xxx: add support for 9690SA [SCSI] bsg: fix bsg_register_queue error path [SCSI] ESP: Increase ESP_BUS_TIMEOUT to 275. [SCSI] libsas: fix scr_read/write users and update the libata documentation [SCSI] mpt fusion: update Kconfig help [SCSI] scsi_transport_sas: add destructor for bsg [SCSI] iscsi_tcp: buggered kmalloc() [SCSI] qla2xxx: Update version number to 8.02.00-k2. [SCSI] qla2xxx: Add ISP25XX support. [SCSI] qla2xxx: Use pci_try_set_mwi(). [SCSI] qla2xxx: Use PCI-X/PCI-Express read control interfaces. [SCSI] qla2xxx: Re-factor isp_operations to static structures. [SCSI] qla2xxx: Validate mid-layer 'underflow' during check-condition handling. [SCSI] qla2xxx: Correct setting of 'current' and 'supported' speeds during FDMI registration. [SCSI] qla2xxx: Generalize iIDMA support. [SCSI] qla2xxx: Generalize FW-Interface-2 support. ...
Diffstat (limited to 'drivers/scsi/libsas')
-rw-r--r--drivers/scsi/libsas/Kconfig7
-rw-r--r--drivers/scsi/libsas/Makefile1
-rw-r--r--drivers/scsi/libsas/sas_ata.c817
-rw-r--r--drivers/scsi/libsas/sas_discover.c402
-rw-r--r--drivers/scsi/libsas/sas_expander.c230
-rw-r--r--drivers/scsi/libsas/sas_init.c1
-rw-r--r--drivers/scsi/libsas/sas_internal.h3
-rw-r--r--drivers/scsi/libsas/sas_scsi_host.c74
8 files changed, 1024 insertions, 511 deletions
diff --git a/drivers/scsi/libsas/Kconfig b/drivers/scsi/libsas/Kconfig
index aafdc92f..3a3c1ac 100644
--- a/drivers/scsi/libsas/Kconfig
+++ b/drivers/scsi/libsas/Kconfig
@@ -30,6 +30,13 @@ config SCSI_SAS_LIBSAS
This provides transport specific helpers for SAS drivers which
use the domain device construct (like the aic94xxx).
+config SCSI_SAS_ATA
+ bool "ATA support for libsas (requires libata)"
+ depends on SCSI_SAS_LIBSAS && ATA
+ help
+ Builds in ATA support into libsas. Will necessitate
+ the loading of libata along with libsas.
+
config SCSI_SAS_LIBSAS_DEBUG
bool "Compile the SAS Domain Transport Attributes in debug mode"
default y
diff --git a/drivers/scsi/libsas/Makefile b/drivers/scsi/libsas/Makefile
index 44d972a..fd387b9 100644
--- a/drivers/scsi/libsas/Makefile
+++ b/drivers/scsi/libsas/Makefile
@@ -34,3 +34,4 @@ libsas-y += sas_init.o \
sas_discover.o \
sas_expander.o \
sas_scsi_host.o
+libsas-$(CONFIG_SCSI_SAS_ATA) += sas_ata.o
diff --git a/drivers/scsi/libsas/sas_ata.c b/drivers/scsi/libsas/sas_ata.c
new file mode 100644
index 0000000..ced2de3
--- /dev/null
+++ b/drivers/scsi/libsas/sas_ata.c
@@ -0,0 +1,817 @@
+/*
+ * Support for SATA devices on Serial Attached SCSI (SAS) controllers
+ *
+ * Copyright (C) 2006 IBM Corporation
+ *
+ * Written by: Darrick J. Wong <djwong@us.ibm.com>, IBM Corporation
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
+ * USA
+ */
+
+#include <linux/scatterlist.h>
+
+#include <scsi/sas_ata.h>
+#include "sas_internal.h"
+#include <scsi/scsi_host.h>
+#include <scsi/scsi_device.h>
+#include <scsi/scsi_tcq.h>
+#include <scsi/scsi.h>
+#include <scsi/scsi_transport.h>
+#include <scsi/scsi_transport_sas.h>
+#include "../scsi_sas_internal.h"
+#include "../scsi_transport_api.h"
+#include <scsi/scsi_eh.h>
+
+static enum ata_completion_errors sas_to_ata_err(struct task_status_struct *ts)
+{
+ /* Cheesy attempt to translate SAS errors into ATA. Hah! */
+
+ /* transport error */
+ if (ts->resp == SAS_TASK_UNDELIVERED)
+ return AC_ERR_ATA_BUS;
+
+ /* ts->resp == SAS_TASK_COMPLETE */
+ /* task delivered, what happened afterwards? */
+ switch (ts->stat) {
+ case SAS_DEV_NO_RESPONSE:
+ return AC_ERR_TIMEOUT;
+
+ case SAS_INTERRUPTED:
+ case SAS_PHY_DOWN:
+ case SAS_NAK_R_ERR:
+ return AC_ERR_ATA_BUS;
+
+
+ case SAS_DATA_UNDERRUN:
+ /*
+ * Some programs that use the taskfile interface
+ * (smartctl in particular) can cause underrun
+ * problems. Ignore these errors, perhaps at our
+ * peril.
+ */
+ return 0;
+
+ case SAS_DATA_OVERRUN:
+ case SAS_QUEUE_FULL:
+ case SAS_DEVICE_UNKNOWN:
+ case SAS_SG_ERR:
+ return AC_ERR_INVALID;
+
+ case SAM_CHECK_COND:
+ case SAS_OPEN_TO:
+ case SAS_OPEN_REJECT:
+ SAS_DPRINTK("%s: Saw error %d. What to do?\n",
+ __FUNCTION__, ts->stat);
+ return AC_ERR_OTHER;
+
+ case SAS_ABORTED_TASK:
+ return AC_ERR_DEV;
+
+ case SAS_PROTO_RESPONSE:
+ /* This means the ending_fis has the error
+ * value; return 0 here to collect it */
+ return 0;
+ default:
+ return 0;
+ }
+}
+
+static void sas_ata_task_done(struct sas_task *task)
+{
+ struct ata_queued_cmd *qc = task->uldd_task;
+ struct domain_device *dev;
+ struct task_status_struct *stat = &task->task_status;
+ struct ata_task_resp *resp = (struct ata_task_resp *)stat->buf;
+ struct sas_ha_struct *sas_ha;
+ enum ata_completion_errors ac;
+ unsigned long flags;
+
+ if (!qc)
+ goto qc_already_gone;
+
+ dev = qc->ap->private_data;
+ sas_ha = dev->port->ha;
+
+ spin_lock_irqsave(dev->sata_dev.ap->lock, flags);
+ if (stat->stat == SAS_PROTO_RESPONSE || stat->stat == SAM_GOOD) {
+ ata_tf_from_fis(resp->ending_fis, &dev->sata_dev.tf);
+ qc->err_mask |= ac_err_mask(dev->sata_dev.tf.command);
+ dev->sata_dev.sstatus = resp->sstatus;
+ dev->sata_dev.serror = resp->serror;
+ dev->sata_dev.scontrol = resp->scontrol;
+ } else if (stat->stat != SAM_STAT_GOOD) {
+ ac = sas_to_ata_err(stat);
+ if (ac) {
+ SAS_DPRINTK("%s: SAS error %x\n", __FUNCTION__,
+ stat->stat);
+ /* We saw a SAS error. Send a vague error. */
+ qc->err_mask = ac;
+ dev->sata_dev.tf.feature = 0x04; /* status err */
+ dev->sata_dev.tf.command = ATA_ERR;
+ }
+ }
+
+ qc->lldd_task = NULL;
+ if (qc->scsicmd)
+ ASSIGN_SAS_TASK(qc->scsicmd, NULL);
+ ata_qc_complete(qc);
+ spin_unlock_irqrestore(dev->sata_dev.ap->lock, flags);
+
+ /*
+ * If the sas_task has an ata qc, a scsi_cmnd and the aborted
+ * flag is set, then we must have come in via the libsas EH
+ * functions. When we exit this function, we need to put the
+ * scsi_cmnd on the list of finished errors. The ata_qc_complete
+ * call cleans up the libata side of things but we're protected
+ * from the scsi_cmnd going away because the scsi_cmnd is owned
+ * by the EH, making libata's call to scsi_done a NOP.
+ */
+ spin_lock_irqsave(&task->task_state_lock, flags);
+ if (qc->scsicmd && task->task_state_flags & SAS_TASK_STATE_ABORTED)
+ scsi_eh_finish_cmd(qc->scsicmd, &sas_ha->eh_done_q);
+ spin_unlock_irqrestore(&task->task_state_lock, flags);
+
+qc_already_gone:
+ list_del_init(&task->list);
+ sas_free_task(task);
+}
+
+static unsigned int sas_ata_qc_issue(struct ata_queued_cmd *qc)
+{
+ int res;
+ struct sas_task *task;
+ struct domain_device *dev = qc->ap->private_data;
+ struct sas_ha_struct *sas_ha = dev->port->ha;
+ struct Scsi_Host *host = sas_ha->core.shost;
+ struct sas_internal *i = to_sas_internal(host->transportt);
+ struct scatterlist *sg;
+ unsigned int num = 0;
+ unsigned int xfer = 0;
+
+ task = sas_alloc_task(GFP_ATOMIC);
+ if (!task)
+ return AC_ERR_SYSTEM;
+ task->dev = dev;
+ task->task_proto = SAS_PROTOCOL_STP;
+ task->task_done = sas_ata_task_done;
+
+ if (qc->tf.command == ATA_CMD_FPDMA_WRITE ||
+ qc->tf.command == ATA_CMD_FPDMA_READ) {
+ /* Need to zero out the tag libata assigned us */
+ qc->tf.nsect = 0;
+ }
+
+ ata_tf_to_fis(&qc->tf, 1, 0, (u8*)&task->ata_task.fis);
+ task->uldd_task = qc;
+ if (is_atapi_taskfile(&qc->tf)) {
+ memcpy(task->ata_task.atapi_packet, qc->cdb, qc->dev->cdb_len);
+ task->total_xfer_len = qc->nbytes + qc->pad_len;
+ task->num_scatter = qc->pad_len ? qc->n_elem + 1 : qc->n_elem;
+ } else {
+ ata_for_each_sg(sg, qc) {
+ num++;
+ xfer += sg->length;
+ }
+
+ task->total_xfer_len = xfer;
+ task->num_scatter = num;
+ }
+
+ task->data_dir = qc->dma_dir;
+ task->scatter = qc->__sg;
+ task->ata_task.retry_count = 1;
+ task->task_state_flags = SAS_TASK_STATE_PENDING;
+ qc->lldd_task = task;
+
+ switch (qc->tf.protocol) {
+ case ATA_PROT_NCQ:
+ task->ata_task.use_ncq = 1;
+ /* fall through */
+ case ATA_PROT_ATAPI_DMA:
+ case ATA_PROT_DMA:
+ task->ata_task.dma_xfer = 1;
+ break;
+ }
+
+ if (qc->scsicmd)
+ ASSIGN_SAS_TASK(qc->scsicmd, task);
+
+ if (sas_ha->lldd_max_execute_num < 2)
+ res = i->dft->lldd_execute_task(task, 1, GFP_ATOMIC);
+ else
+ res = sas_queue_up(task);
+
+ /* Examine */
+ if (res) {
+ SAS_DPRINTK("lldd_execute_task returned: %d\n", res);
+
+ if (qc->scsicmd)
+ ASSIGN_SAS_TASK(qc->scsicmd, NULL);
+ sas_free_task(task);
+ return AC_ERR_SYSTEM;
+ }
+
+ return 0;
+}
+
+static u8 sas_ata_check_status(struct ata_port *ap)
+{
+ struct domain_device *dev = ap->private_data;
+ return dev->sata_dev.tf.command;
+}
+
+static void sas_ata_phy_reset(struct ata_port *ap)
+{
+ struct domain_device *dev = ap->private_data;
+ struct sas_internal *i =
+ to_sas_internal(dev->port->ha->core.shost->transportt);
+ int res = 0;
+
+ if (i->dft->lldd_I_T_nexus_reset)
+ res = i->dft->lldd_I_T_nexus_reset(dev);
+
+ if (res)
+ SAS_DPRINTK("%s: Unable to reset I T nexus?\n", __FUNCTION__);
+
+ switch (dev->sata_dev.command_set) {
+ case ATA_COMMAND_SET:
+ SAS_DPRINTK("%s: Found ATA device.\n", __FUNCTION__);
+ ap->device[0].class = ATA_DEV_ATA;
+ break;
+ case ATAPI_COMMAND_SET:
+ SAS_DPRINTK("%s: Found ATAPI device.\n", __FUNCTION__);
+ ap->device[0].class = ATA_DEV_ATAPI;
+ break;
+ default:
+ SAS_DPRINTK("%s: Unknown SATA command set: %d.\n",
+ __FUNCTION__,
+ dev->sata_dev.command_set);
+ ap->device[0].class = ATA_DEV_UNKNOWN;
+ break;
+ }
+
+ ap->cbl = ATA_CBL_SATA;
+}
+
+static void sas_ata_post_internal(struct ata_queued_cmd *qc)
+{
+ if (qc->flags & ATA_QCFLAG_FAILED)
+ qc->err_mask |= AC_ERR_OTHER;
+
+ if (qc->err_mask) {
+ /*
+ * Find the sas_task and kill it. By this point,
+ * libata has decided to kill the qc, so we needn't
+ * bother with sas_ata_task_done. But we still
+ * ought to abort the task.
+ */
+ struct sas_task *task = qc->lldd_task;
+ unsigned long flags;
+
+ qc->lldd_task = NULL;
+ if (task) {
+ /* Should this be a AT(API) device reset? */
+ spin_lock_irqsave(&task->task_state_lock, flags);
+ task->task_state_flags |= SAS_TASK_NEED_DEV_RESET;
+ spin_unlock_irqrestore(&task->task_state_lock, flags);
+
+ task->uldd_task = NULL;
+ __sas_task_abort(task);
+ }
+ }
+}
+
+static void sas_ata_tf_read(struct ata_port *ap, struct ata_taskfile *tf)
+{
+ struct domain_device *dev = ap->private_data;
+ memcpy(tf, &dev->sata_dev.tf, sizeof (*tf));
+}
+
+static int sas_ata_scr_write(struct ata_port *ap, unsigned int sc_reg_in,
+ u32 val)
+{
+ struct domain_device *dev = ap->private_data;
+
+ SAS_DPRINTK("STUB %s\n", __FUNCTION__);
+ switch (sc_reg_in) {
+ case SCR_STATUS:
+ dev->sata_dev.sstatus = val;
+ break;
+ case SCR_CONTROL:
+ dev->sata_dev.scontrol = val;
+ break;
+ case SCR_ERROR:
+ dev->sata_dev.serror = val;
+ break;
+ case SCR_ACTIVE:
+ dev->sata_dev.ap->sactive = val;
+ break;
+ default:
+ return -EINVAL;
+ }
+ return 0;
+}
+
+static int sas_ata_scr_read(struct ata_port *ap, unsigned int sc_reg_in,
+ u32 *val)
+{
+ struct domain_device *dev = ap->private_data;
+
+ SAS_DPRINTK("STUB %s\n", __FUNCTION__);
+ switch (sc_reg_in) {
+ case SCR_STATUS:
+ *val = dev->sata_dev.sstatus;
+ return 0;
+ case SCR_CONTROL:
+ *val = dev->sata_dev.scontrol;
+ return 0;
+ case SCR_ERROR:
+ *val = dev->sata_dev.serror;
+ return 0;
+ case SCR_ACTIVE:
+ *val = dev->sata_dev.ap->sactive;
+ return 0;
+ default:
+ return -EINVAL;
+ }
+}
+
+static struct ata_port_operations sas_sata_ops = {
+ .port_disable = ata_port_disable,
+ .check_status = sas_ata_check_status,
+ .check_altstatus = sas_ata_check_status,
+ .dev_select = ata_noop_dev_select,
+ .phy_reset = sas_ata_phy_reset,
+ .post_internal_cmd = sas_ata_post_internal,
+ .tf_read = sas_ata_tf_read,
+ .qc_prep = ata_noop_qc_prep,
+ .qc_issue = sas_ata_qc_issue,
+ .port_start = ata_sas_port_start,
+ .port_stop = ata_sas_port_stop,
+ .scr_read = sas_ata_scr_read,
+ .scr_write = sas_ata_scr_write
+};
+
+static struct ata_port_info sata_port_info = {
+ .flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY | ATA_FLAG_SATA_RESET |
+ ATA_FLAG_MMIO | ATA_FLAG_PIO_DMA | ATA_FLAG_NCQ,
+ .pio_mask = 0x1f, /* PIO0-4 */
+ .mwdma_mask = 0x07, /* MWDMA0-2 */
+ .udma_mask = ATA_UDMA6,
+ .port_ops = &sas_sata_ops
+};
+
+int sas_ata_init_host_and_port(struct domain_device *found_dev,
+ struct scsi_target *starget)
+{
+ struct Scsi_Host *shost = dev_to_shost(&starget->dev);
+ struct sas_ha_struct *ha = SHOST_TO_SAS_HA(shost);
+ struct ata_port *ap;
+
+ ata_host_init(&found_dev->sata_dev.ata_host,
+ &ha->pcidev->dev,
+ sata_port_info.flags,
+ &sas_sata_ops);
+ ap = ata_sas_port_alloc(&found_dev->sata_dev.ata_host,
+ &sata_port_info,
+ shost);
+ if (!ap) {
+ SAS_DPRINTK("ata_sas_port_alloc failed.\n");
+ return -ENODEV;
+ }
+
+ ap->private_data = found_dev;
+ ap->cbl = ATA_CBL_SATA;
+ ap->scsi_host = shost;
+ found_dev->sata_dev.ap = ap;
+
+ return 0;
+}
+
+void sas_ata_task_abort(struct sas_task *task)
+{
+ struct ata_queued_cmd *qc = task->uldd_task;
+ struct completion *waiting;
+
+ /* Bounce SCSI-initiated commands to the SCSI EH */
+ if (qc->scsicmd) {
+ scsi_req_abort_cmd(qc->scsicmd);
+ scsi_schedule_eh(qc->scsicmd->device->host);
+ return;
+ }
+
+ /* Internal command, fake a timeout and complete. */
+ qc->flags &= ~ATA_QCFLAG_ACTIVE;
+ qc->flags |= ATA_QCFLAG_FAILED;
+ qc->err_mask |= AC_ERR_TIMEOUT;
+ waiting = qc->private_data;
+ complete(waiting);
+}
+
+static void sas_task_timedout(unsigned long _task)
+{
+ struct sas_task *task = (void *) _task;
+ unsigned long flags;
+
+ spin_lock_irqsave(&task->task_state_lock, flags);
+ if (!(task->task_state_flags & SAS_TASK_STATE_DONE))
+ task->task_state_flags |= SAS_TASK_STATE_ABORTED;
+ spin_unlock_irqrestore(&task->task_state_lock, flags);
+
+ complete(&task->completion);
+}
+
+static void sas_disc_task_done(struct sas_task *task)
+{
+ if (!del_timer(&task->timer))
+ return;
+ complete(&task->completion);
+}
+
+#define SAS_DEV_TIMEOUT 10
+
+/**
+ * sas_execute_task -- Basic task processing for discovery
+ * @task: the task to be executed
+ * @buffer: pointer to buffer to do I/O
+ * @size: size of @buffer
+ * @pci_dma_dir: PCI_DMA_...
+ */
+static int sas_execute_task(struct sas_task *task, void *buffer, int size,
+ int pci_dma_dir)
+{
+ int res = 0;
+ struct scatterlist *scatter = NULL;
+ struct task_status_struct *ts = &task->task_status;
+ int num_scatter = 0;
+ int retries = 0;
+ struct sas_internal *i =
+ to_sas_internal(task->dev->port->ha->core.shost->transportt);
+
+ if (pci_dma_dir != PCI_DMA_NONE) {
+ scatter = kzalloc(sizeof(*scatter), GFP_KERNEL);
+ if (!scatter)
+ goto out;
+
+ sg_init_one(scatter, buffer, size);
+ num_scatter = 1;
+ }
+
+ task->task_proto = task->dev->tproto;
+ task->scatter = scatter;
+ task->num_scatter = num_scatter;
+ task->total_xfer_len = size;
+ task->data_dir = pci_dma_dir;
+ task->task_done = sas_disc_task_done;
+ if (pci_dma_dir != PCI_DMA_NONE &&
+ sas_protocol_ata(task->task_proto)) {
+ task->num_scatter = pci_map_sg(task->dev->port->ha->pcidev,
+ task->scatter,
+ task->num_scatter,
+ task->data_dir);
+ }
+
+ for (retries = 0; retries < 5; retries++) {
+ task->task_state_flags = SAS_TASK_STATE_PENDING;
+ init_completion(&task->completion);
+
+ task->timer.data = (unsigned long) task;
+ task->timer.function = sas_task_timedout;
+ task->timer.expires = jiffies + SAS_DEV_TIMEOUT*HZ;
+ add_timer(&task->timer);
+
+ res = i->dft->lldd_execute_task(task, 1, GFP_KERNEL);
+ if (res) {
+ del_timer(&task->timer);
+ SAS_DPRINTK("executing SAS discovery task failed:%d\n",
+ res);
+ goto ex_err;
+ }
+ wait_for_completion(&task->completion);
+ res = -ETASK;
+ if (task->task_state_flags & SAS_TASK_STATE_ABORTED) {
+ int res2;
+ SAS_DPRINTK("task aborted, flags:0x%x\n",
+ task->task_state_flags);
+ res2 = i->dft->lldd_abort_task(task);
+ SAS_DPRINTK("came back from abort task\n");
+ if (!(task->task_state_flags & SAS_TASK_STATE_DONE)) {
+ if (res2 == TMF_RESP_FUNC_COMPLETE)
+ continue; /* Retry the task */
+ else
+ goto ex_err;
+ }
+ }
+ if (task->task_status.stat == SAM_BUSY ||
+ task->task_status.stat == SAM_TASK_SET_FULL ||
+ task->task_status.stat == SAS_QUEUE_FULL) {
+ SAS_DPRINTK("task: q busy, sleeping...\n");
+ schedule_timeout_interruptible(HZ);
+ } else if (task->task_status.stat == SAM_CHECK_COND) {
+ struct scsi_sense_hdr shdr;
+
+ if (!scsi_normalize_sense(ts->buf, ts->buf_valid_size,
+ &shdr)) {
+ SAS_DPRINTK("couldn't normalize sense\n");
+ continue;
+ }
+ if ((shdr.sense_key == 6 && shdr.asc == 0x29) ||
+ (shdr.sense_key == 2 && shdr.asc == 4 &&
+ shdr.ascq == 1)) {
+ SAS_DPRINTK("device %016llx LUN: %016llx "
+ "powering up or not ready yet, "
+ "sleeping...\n",
+ SAS_ADDR(task->dev->sas_addr),
+ SAS_ADDR(task->ssp_task.LUN));
+
+ schedule_timeout_interruptible(5*HZ);
+ } else if (shdr.sense_key == 1) {
+ res = 0;
+ break;
+ } else if (shdr.sense_key == 5) {
+ break;
+ } else {
+ SAS_DPRINTK("dev %016llx LUN: %016llx "
+ "sense key:0x%x ASC:0x%x ASCQ:0x%x"
+ "\n",
+ SAS_ADDR(task->dev->sas_addr),
+ SAS_ADDR(task->ssp_task.LUN),
+ shdr.sense_key,
+ shdr.asc, shdr.ascq);
+ }
+ } else if (task->task_status.resp != SAS_TASK_COMPLETE ||
+ task->task_status.stat != SAM_GOOD) {
+ SAS_DPRINTK("task finished with resp:0x%x, "
+ "stat:0x%x\n",
+ task->task_status.resp,
+ task->task_status.stat);
+ goto ex_err;
+ } else {
+ res = 0;
+ break;
+ }
+ }
+ex_err:
+ if (pci_dma_dir != PCI_DMA_NONE) {
+ if (sas_protocol_ata(task->task_proto))
+ pci_unmap_sg(task->dev->port->ha->pcidev,
+ task->scatter, task->num_scatter,
+ task->data_dir);
+ kfree(scatter);
+ }
+out:
+ return res;
+}
+
+/* ---------- SATA ---------- */
+
+static void sas_get_ata_command_set(struct domain_device *dev)
+{
+ struct dev_to_host_fis *fis =
+ (struct dev_to_host_fis *) dev->frame_rcvd;
+
+ if ((fis->sector_count == 1 && /* ATA */
+ fis->lbal == 1 &&
+ fis->lbam == 0 &&
+ fis->lbah == 0 &&
+ fis->device == 0)
+ ||
+ (fis->sector_count == 0 && /* CE-ATA (mATA) */
+ fis->lbal == 0 &&
+ fis->lbam == 0xCE &&
+ fis->lbah == 0xAA &&
+ (fis->device & ~0x10) == 0))
+
+ dev->sata_dev.command_set = ATA_COMMAND_SET;
+
+ else if ((fis->interrupt_reason == 1 && /* ATAPI */
+ fis->lbal == 1 &&
+ fis->byte_count_low == 0x14 &&
+ fis->byte_count_high == 0xEB &&
+ (fis->device & ~0x10) == 0))
+
+ dev->sata_dev.command_set = ATAPI_COMMAND_SET;
+
+ else if ((fis->sector_count == 1 && /* SEMB */
+ fis->lbal == 1 &&
+ fis->lbam == 0x3C &&
+ fis->lbah == 0xC3 &&
+ fis->device == 0)
+ ||
+ (fis->interrupt_reason == 1 && /* SATA PM */
+ fis->lbal == 1 &&
+ fis->byte_count_low == 0x69 &&
+ fis->byte_count_high == 0x96 &&
+ (fis->device & ~0x10) == 0))
+
+ /* Treat it as a superset? */
+ dev->sata_dev.command_set = ATAPI_COMMAND_SET;
+}
+
+/**
+ * sas_issue_ata_cmd -- Basic SATA command processing for discovery
+ * @dev: the device to send the command to
+ * @command: the command register
+ * @features: the features register
+ * @buffer: pointer to buffer to do I/O
+ * @size: size of @buffer
+ * @pci_dma_dir: PCI_DMA_...
+ */
+static int sas_issue_ata_cmd(struct domain_device *dev, u8 command,
+ u8 features, void *buffer, int size,
+ int pci_dma_dir)
+{
+ int res = 0;
+ struct sas_task *task;
+ struct dev_to_host_fis *d2h_fis = (struct dev_to_host_fis *)
+ &dev->frame_rcvd[0];
+
+ res = -ENOMEM;
+ task = sas_alloc_task(GFP_KERNEL);
+ if (!task)
+ goto out;
+
+ task->dev = dev;
+
+ task->ata_task.fis.fis_type = 0x27;
+ task->ata_task.fis.command = command;
+ task->ata_task.fis.features = features;
+ task->ata_task.fis.device = d2h_fis->device;
+ task->ata_task.retry_count = 1;
+
+ res = sas_execute_task(task, buffer, size, pci_dma_dir);
+
+ sas_free_task(task);
+out:
+ return res;
+}
+
+static void sas_sata_propagate_sas_addr(struct domain_device *dev)
+{
+ unsigned long flags;
+ struct asd_sas_port *port = dev->port;
+ struct asd_sas_phy *phy;
+
+ BUG_ON(dev->parent);
+
+ memcpy(port->attached_sas_addr, dev->sas_addr, SAS_ADDR_SIZE);
+ spin_lock_irqsave(&port->phy_list_lock, flags);
+ list_for_each_entry(phy, &port->phy_list, port_phy_el)
+ memcpy(phy->attached_sas_addr, dev->sas_addr, SAS_ADDR_SIZE);
+ spin_unlock_irqrestore(&port->phy_list_lock, flags);
+}
+
+#define ATA_IDENTIFY_DEV 0xEC
+#define ATA_IDENTIFY_PACKET_DEV 0xA1
+#define ATA_SET_FEATURES 0xEF
+#define ATA_FEATURE_PUP_STBY_SPIN_UP 0x07
+
+/**
+ * sas_discover_sata_dev -- discover a STP/SATA device (SATA_DEV)
+ * @dev: STP/SATA device of interest (ATA/ATAPI)
+ *
+ * The LLDD has already been notified of this device, so that we can
+ * send FISes to it. Here we try to get IDENTIFY DEVICE or IDENTIFY
+ * PACKET DEVICE, if ATAPI device, so that the LLDD can fine-tune its
+ * performance for this device.
+ */
+static int sas_discover_sata_dev(struct domain_device *dev)
+{
+ int res;
+ __le16 *identify_x;
+ u8 command;
+
+ identify_x = kzalloc(512, GFP_KERNEL);
+ if (!identify_x)
+ return -ENOMEM;
+
+ if (dev->sata_dev.command_set == ATA_COMMAND_SET) {
+ dev->sata_dev.identify_device = identify_x;
+ command = ATA_IDENTIFY_DEV;
+ } else {
+ dev->sata_dev.identify_packet_device = identify_x;
+ command = ATA_IDENTIFY_PACKET_DEV;
+ }
+
+ res = sas_issue_ata_cmd(dev, command, 0, identify_x, 512,
+ PCI_DMA_FROMDEVICE);
+ if (res)
+ goto out_err;
+
+ /* lives on the media? */
+ if (le16_to_cpu(identify_x[0]) & 4) {
+ /* incomplete response */
+ SAS_DPRINTK("sending SET FEATURE/PUP_STBY_SPIN_UP to "
+ "dev %llx\n", SAS_ADDR(dev->sas_addr));
+ if (!le16_to_cpu(identify_x[83] & (1<<6)))
+ goto cont1;
+ res = sas_issue_ata_cmd(dev, ATA_SET_FEATURES,
+ ATA_FEATURE_PUP_STBY_SPIN_UP,
+ NULL, 0, PCI_DMA_NONE);
+ if (res)
+ goto cont1;
+
+ schedule_timeout_interruptible(5*HZ); /* More time? */
+ res = sas_issue_ata_cmd(dev, command, 0, identify_x, 512,
+ PCI_DMA_FROMDEVICE);
+ if (res)
+ goto out_err;
+ }
+cont1:
+ /* Get WWN */
+ if (dev->port->oob_mode != SATA_OOB_MODE) {
+ memcpy(dev->sas_addr, dev->sata_dev.rps_resp.rps.stp_sas_addr,
+ SAS_ADDR_SIZE);
+ } else if (dev->sata_dev.command_set == ATA_COMMAND_SET &&
+ (le16_to_cpu(dev->sata_dev.identify_device[108]) & 0xF000)
+ == 0x5000) {
+ int i;
+
+ for (i = 0; i < 4; i++) {
+ dev->sas_addr[2*i] =
+ (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);
+
+ return 0;
+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;
+}
+
+/**
+ * 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)
+ return res;
+
+ 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;
+ }
+ sas_notify_lldd_dev_gone(dev);
+ if (!res) {
+ sas_notify_lldd_dev_found(dev);
+ res = sas_rphy_add(dev->rphy);
+ }
+
+ return res;
+}
diff --git a/drivers/scsi/libsas/sas_discover.c b/drivers/scsi/libsas/sas_discover.c
index a65598b..6ac9f61 100644
--- a/drivers/scsi/libsas/sas_discover.c
+++ b/drivers/scsi/libsas/sas_discover.c
@@ -55,149 +55,6 @@ void sas_init_dev(struct domain_device *dev)
}
}
-static void sas_task_timedout(unsigned long _task)
-{
- struct sas_task *task = (void *) _task;
- unsigned long flags;
-
- spin_lock_irqsave(&task->task_state_lock, flags);
- if (!(task->task_state_flags & SAS_TASK_STATE_DONE))
- task->task_state_flags |= SAS_TASK_STATE_ABORTED;
- spin_unlock_irqrestore(&task->task_state_lock, flags);
-
- complete(&task->completion);
-}
-
-static void sas_disc_task_done(struct sas_task *task)
-{
- if (!del_timer(&task->timer))
- return;
- complete(&task->completion);
-}
-
-#define SAS_DEV_TIMEOUT 10
-
-/**
- * sas_execute_task -- Basic task processing for discovery
- * @task: the task to be executed
- * @buffer: pointer to buffer to do I/O
- * @size: size of @buffer
- * @pci_dma_dir: PCI_DMA_...
- */
-static int sas_execute_task(struct sas_task *task, void *buffer, int size,
- int pci_dma_dir)
-{
- int res = 0;
- struct scatterlist *scatter = NULL;
- struct task_status_struct *ts = &task->task_status;
- int num_scatter = 0;
- int retries = 0;
- struct sas_internal *i =
- to_sas_internal(task->dev->port->ha->core.shost->transportt);
-
- if (pci_dma_dir != PCI_DMA_NONE) {
- scatter = kzalloc(sizeof(*scatter), GFP_KERNEL);
- if (!scatter)
- goto out;
-
- sg_init_one(scatter, buffer, size);
- num_scatter = 1;
- }
-
- task->task_proto = task->dev->tproto;
- task->scatter = scatter;
- task->num_scatter = num_scatter;
- task->total_xfer_len = size;
- task->data_dir = pci_dma_dir;
- task->task_done = sas_disc_task_done;
-
- for (retries = 0; retries < 5; retries++) {
- task->task_state_flags = SAS_TASK_STATE_PENDING;
- init_completion(&task->completion);
-
- task->timer.data = (unsigned long) task;
- task->timer.function = sas_task_timedout;
- task->timer.expires = jiffies + SAS_DEV_TIMEOUT*HZ;
- add_timer(&task->timer);
-
- res = i->dft->lldd_execute_task(task, 1, GFP_KERNEL);
- if (res) {
- del_timer(&task->timer);
- SAS_DPRINTK("executing SAS discovery task failed:%d\n",
- res);
- goto ex_err;
- }
- wait_for_completion(&task->completion);
- res = -ETASK;
- if (task->task_state_flags & SAS_TASK_STATE_ABORTED) {
- int res2;
- SAS_DPRINTK("task aborted, flags:0x%x\n",
- task->task_state_flags);
- res2 = i->dft->lldd_abort_task(task);
- SAS_DPRINTK("came back from abort task\n");
- if (!(task->task_state_flags & SAS_TASK_STATE_DONE)) {
- if (res2 == TMF_RESP_FUNC_COMPLETE)
- continue; /* Retry the task */
- else
- goto ex_err;
- }
- }
- if (task->task_status.stat == SAM_BUSY ||
- task->task_status.stat == SAM_TASK_SET_FULL ||
- task->task_status.stat == SAS_QUEUE_FULL) {
- SAS_DPRINTK("task: q busy, sleeping...\n");
- schedule_timeout_interruptible(HZ);
- } else if (task->task_status.stat == SAM_CHECK_COND) {
- struct scsi_sense_hdr shdr;
-
- if (!scsi_normalize_sense(ts->buf, ts->buf_valid_size,
- &shdr)) {
- SAS_DPRINTK("couldn't normalize sense\n");
- continue;
- }
- if ((shdr.sense_key == 6 && shdr.asc == 0x29) ||
- (shdr.sense_key == 2 && shdr.asc == 4 &&
- shdr.ascq == 1)) {
- SAS_DPRINTK("device %016llx LUN: %016llx "
- "powering up or not ready yet, "
- "sleeping...\n",
- SAS_ADDR(task->dev->sas_addr),
- SAS_ADDR(task->ssp_task.LUN));
-
- schedule_timeout_interruptible(5*HZ);
- } else if (shdr.sense_key == 1) {
- res = 0;
- break;
- } else if (shdr.sense_key == 5) {
- break;
- } else {
- SAS_DPRINTK("dev %016llx LUN: %016llx "
- "sense key:0x%x ASC:0x%x ASCQ:0x%x"
- "\n",
- SAS_ADDR(task->dev->sas_addr),
- SAS_ADDR(task->ssp_task.LUN),
- shdr.sense_key,
- shdr.asc, shdr.ascq);
- }
- } else if (task->task_status.resp != SAS_TASK_COMPLETE ||
- task->task_status.stat != SAM_GOOD) {
- SAS_DPRINTK("task finished with resp:0x%x, "
- "stat:0x%x\n",
- task->task_status.resp,
- task->task_status.stat);
- goto ex_err;
- } else {
- res = 0;
- break;
- }
- }
-ex_err:
- if (pci_dma_dir != PCI_DMA_NONE)
- kfree(scatter);
-out:
- return res;
-}
-
/* ---------- Domain device discovery ---------- */
/**
@@ -255,6 +112,7 @@ static int sas_get_port_device(struct asd_sas_port *port)
switch (dev->dev_type) {
case SAS_END_DEV:
+ case SATA_DEV:
rphy = sas_end_device_alloc(port->port);
break;
case EDGE_DEV:
@@ -265,7 +123,6 @@ static int sas_get_port_device(struct asd_sas_port *port)
rphy = sas_expander_alloc(port->port,
SAS_FANOUT_EXPANDER_DEVICE);
break;
- case SATA_DEV:
default:
printk("ERROR: Unidentified device type %d\n", dev->dev_type);
rphy = NULL;
@@ -292,207 +149,15 @@ static int sas_get_port_device(struct asd_sas_port *port)
port->disc.max_level = 0;
dev->rphy = rphy;
- spin_lock(&port->dev_list_lock);
+ spin_lock_irq(&port->dev_list_lock);
list_add_tail(&dev->dev_list_node, &port->dev_list);
- spin_unlock(&port->dev_list_lock);
+ spin_unlock_irq(&port->dev_list_lock);
return 0;
}
/* ---------- Discover and Revalidate ---------- */
-/* ---------- SATA ---------- */
-
-static void sas_get_ata_command_set(struct domain_device *dev)
-{
- struct dev_to_host_fis *fis =
- (struct dev_to_host_fis *) dev->frame_rcvd;
-
- if ((fis->sector_count == 1 && /* ATA */
- fis->lbal == 1 &&
- fis->lbam == 0 &&
- fis->lbah == 0 &&
- fis->device == 0)
- ||
- (fis->sector_count == 0 && /* CE-ATA (mATA) */
- fis->lbal == 0 &&
- fis->lbam == 0xCE &&
- fis->lbah == 0xAA &&
- (fis->device & ~0x10) == 0))
-
- dev->sata_dev.command_set = ATA_COMMAND_SET;
-
- else if ((fis->interrupt_reason == 1 && /* ATAPI */
- fis->lbal == 1 &&
- fis->byte_count_low == 0x14 &&
- fis->byte_count_high == 0xEB &&
- (fis->device & ~0x10) == 0))
-
- dev->sata_dev.command_set = ATAPI_COMMAND_SET;
-
- else if ((fis->sector_count == 1 && /* SEMB */
- fis->lbal == 1 &&
- fis->lbam == 0x3C &&
- fis->lbah == 0xC3 &&
- fis->device == 0)
- ||
- (fis->interrupt_reason == 1 && /* SATA PM */
- fis->lbal == 1 &&
- fis->byte_count_low == 0x69 &&
- fis->byte_count_high == 0x96 &&
- (fis->device & ~0x10) == 0))
-
- /* Treat it as a superset? */
- dev->sata_dev.command_set = ATAPI_COMMAND_SET;
-}
-
-/**
- * sas_issue_ata_cmd -- Basic SATA command processing for discovery
- * @dev: the device to send the command to
- * @command: the command register
- * @features: the features register
- * @buffer: pointer to buffer to do I/O
- * @size: size of @buffer
- * @pci_dma_dir: PCI_DMA_...
- */
-static int sas_issue_ata_cmd(struct domain_device *dev, u8 command,
- u8 features, void *buffer, int size,
- int pci_dma_dir)
-{
- int res = 0;
- struct sas_task *task;
- struct dev_to_host_fis *d2h_fis = (struct dev_to_host_fis *)
- &dev->frame_rcvd[0];
-
- res = -ENOMEM;
- task = sas_alloc_task(GFP_KERNEL);
- if (!task)
- goto out;
-
- task->dev = dev;
-
- task->ata_task.fis.command = command;
- task->ata_task.fis.features = features;
- task->ata_task.fis.device = d2h_fis->device;
- task->ata_task.retry_count = 1;
-
- res = sas_execute_task(task, buffer, size, pci_dma_dir);
-
- sas_free_task(task);
-out:
- return res;
-}
-
-static void sas_sata_propagate_sas_addr(struct domain_device *dev)
-{
- unsigned long flags;
- struct asd_sas_port *port = dev->port;
- struct asd_sas_phy *phy;
-
- BUG_ON(dev->parent);
-
- memcpy(port->attached_sas_addr, dev->sas_addr, SAS_ADDR_SIZE);
- spin_lock_irqsave(&port->phy_list_lock, flags);
- list_for_each_entry(phy, &port->phy_list, port_phy_el)
- memcpy(phy->attached_sas_addr, dev->sas_addr, SAS_ADDR_SIZE);
- spin_unlock_irqrestore(&port->phy_list_lock, flags);
-}
-
-#define ATA_IDENTIFY_DEV 0xEC
-#define ATA_IDENTIFY_PACKET_DEV 0xA1
-#define ATA_SET_FEATURES 0xEF
-#define ATA_FEATURE_PUP_STBY_SPIN_UP 0x07
-
-/**
- * sas_discover_sata_dev -- discover a STP/SATA device (SATA_DEV)
- * @dev: STP/SATA device of interest (ATA/ATAPI)
- *
- * The LLDD has already been notified of this device, so that we can
- * send FISes to it. Here we try to get IDENTIFY DEVICE or IDENTIFY
- * PACKET DEVICE, if ATAPI device, so that the LLDD can fine-tune its
- * performance for this device.
- */
-static int sas_discover_sata_dev(struct domain_device *dev)
-{
- int res;
- __le16 *identify_x;
- u8 command;
-
- identify_x = kzalloc(512, GFP_KERNEL);
- if (!identify_x)
- return -ENOMEM;
-
- if (dev->sata_dev.command_set == ATA_COMMAND_SET) {
- dev->sata_dev.identify_device = identify_x;
- command = ATA_IDENTIFY_DEV;
- } else {
- dev->sata_dev.identify_packet_device = identify_x;
- command = ATA_IDENTIFY_PACKET_DEV;
- }
-
- res = sas_issue_ata_cmd(dev, command, 0, identify_x, 512,
- PCI_DMA_FROMDEVICE);
- if (res)
- goto out_err;
-
- /* lives on the media? */
- if (le16_to_cpu(identify_x[0]) & 4) {
- /* incomplete response */
- SAS_DPRINTK("sending SET FEATURE/PUP_STBY_SPIN_UP to "
- "dev %llx\n", SAS_ADDR(dev->sas_addr));
- if (!le16_to_cpu(identify_x[83] & (1<<6)))
- goto cont1;
- res = sas_issue_ata_cmd(dev, ATA_SET_FEATURES,
- ATA_FEATURE_PUP_STBY_SPIN_UP,
- NULL, 0, PCI_DMA_NONE);
- if (res)
- goto cont1;
-
- schedule_timeout_interruptible(5*HZ); /* More time? */
- res = sas_issue_ata_cmd(dev, command, 0, identify_x, 512,
- PCI_DMA_FROMDEVICE);
- if (res)
- goto out_err;
- }
-cont1:
- /* Get WWN */
- if (dev->port->oob_mode != SATA_OOB_MODE) {
- memcpy(dev->sas_addr, dev->sata_dev.rps_resp.rps.stp_sas_addr,
- SAS_ADDR_SIZE);
- } else if (dev->sata_dev.command_set == ATA_COMMAND_SET &&
- (le16_to_cpu(dev->sata_dev.identify_device[108]) & 0xF000)
- == 0x5000) {
- int i;
-
- for (i = 0; i < 4; i++) {
- dev->sas_addr[2*i] =
- (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);
- */
- return 0;
-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;
@@ -525,60 +190,6 @@ void sas_notify_lldd_dev_gone(struct domain_device *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)
@@ -685,11 +296,14 @@ static void sas_discover_domain(struct work_struct *work)
case FANOUT_DEV:
error = sas_discover_root_expander(dev);
break;
+#ifdef CONFIG_SCSI_SAS_ATA
case SATA_DEV:
case SATA_PM:
error = sas_discover_sata(dev);
break;
+#endif
default:
+ error = -ENXIO;
SAS_DPRINTK("unhandled device %d\n", dev->dev_type);
break;
}
@@ -698,9 +312,9 @@ static void sas_discover_domain(struct work_struct *work)
sas_rphy_free(dev->rphy);
dev->rphy = NULL;
- spin_lock(&port->dev_list_lock);
+ spin_lock_irq(&port->dev_list_lock);
list_del_init(&dev->dev_list_node);
- spin_unlock(&port->dev_list_lock);
+ spin_unlock_irq(&port->dev_list_lock);
kfree(dev); /* not kobject_register-ed yet */
port->port_dev = NULL;
diff --git a/drivers/scsi/libsas/sas_expander.c b/drivers/scsi/libsas/sas_expander.c
index 23e90c5..b500f0c 100644
--- a/drivers/scsi/libsas/sas_expander.c
+++ b/drivers/scsi/libsas/sas_expander.c
@@ -23,6 +23,7 @@
*/
#include <linux/scatterlist.h>
+#include <linux/blkdev.h>
#include "sas_internal.h"
@@ -36,14 +37,6 @@ static int sas_configure_phy(struct domain_device *dev, int phy_id,
u8 *sas_addr, int include);
static int sas_disable_routing(struct domain_device *dev, u8 *sas_addr);
-#if 0
-/* FIXME: smp needs to migrate into the sas class */
-static ssize_t smp_portal_read(struct kobject *, struct bin_attribute *,
- char *, loff_t, size_t);
-static ssize_t smp_portal_write(struct kobject *, struct bin_attribute *,
- char *, loff_t, size_t);
-#endif
-
/* ---------- SMP task management ---------- */
static void smp_task_timedout(unsigned long _task)
@@ -220,6 +213,36 @@ static void sas_set_ex_phy(struct domain_device *dev, int phy_id,
#define DISCOVER_REQ_SIZE 16
#define DISCOVER_RESP_SIZE 56
+static int sas_ex_phy_discover_helper(struct domain_device *dev, u8 *disc_req,
+ u8 *disc_resp, int single)
+{
+ int i, res;
+
+ disc_req[9] = single;
+ for (i = 1 ; i < 3; i++) {
+ struct discover_resp *dr;
+
+ res = smp_execute_task(dev, disc_req, DISCOVER_REQ_SIZE,
+ disc_resp, DISCOVER_RESP_SIZE);
+ if (res)
+ return res;
+ /* This is detecting a failure to transmit inital
+ * dev to host FIS as described in section G.5 of
+ * sas-2 r 04b */
+ dr = &((struct smp_resp *)disc_resp)->disc;
+ if (!(dr->attached_dev_type == 0 &&
+ dr->attached_sata_dev))
+ break;
+ /* In order to generate the dev to host FIS, we
+ * send a link reset to the expander port */
+ sas_smp_phy_control(dev, single, PHY_FUNC_LINK_RESET, NULL);
+ /* Wait for the reset to trigger the negotiation */
+ msleep(500);
+ }
+ sas_set_ex_phy(dev, single, disc_resp);
+ return 0;
+}
+
static int sas_ex_phy_discover(struct domain_device *dev, int single)
{
struct expander_device *ex = &dev->ex_dev;
@@ -240,23 +263,15 @@ static int sas_ex_phy_discover(struct domain_device *dev, int single)
disc_req[1] = SMP_DISCOVER;
if (0 <= single && single < ex->num_phys) {
- disc_req[9] = single;
- res = smp_execute_task(dev, disc_req, DISCOVER_REQ_SIZE,
- disc_resp, DISCOVER_RESP_SIZE);
- if (res)
- goto out_err;
- sas_set_ex_phy(dev, single, disc_resp);
+ res = sas_ex_phy_discover_helper(dev, disc_req, disc_resp, single);
} else {
int i;
for (i = 0; i < ex->num_phys; i++) {
- disc_req[9] = i;
- res = smp_execute_task(dev, disc_req,
- DISCOVER_REQ_SIZE, disc_resp,
- DISCOVER_RESP_SIZE);
+ res = sas_ex_phy_discover_helper(dev, disc_req,
+ disc_resp, i);
if (res)
goto out_err;
- sas_set_ex_phy(dev, i, disc_resp);
}
}
out_err:
@@ -520,6 +535,8 @@ int sas_smp_get_phy_events(struct sas_phy *phy)
}
+#ifdef CONFIG_SCSI_SAS_ATA
+
#define RPS_REQ_SIZE 16
#define RPS_RESP_SIZE 60
@@ -529,6 +546,7 @@ static int sas_get_report_phy_sata(struct domain_device *dev,
{
int res;
u8 *rps_req = alloc_smp_req(RPS_REQ_SIZE);
+ u8 *resp = (u8 *)rps_resp;
if (!rps_req)
return -ENOMEM;
@@ -539,9 +557,30 @@ static int sas_get_report_phy_sata(struct domain_device *dev,
res = smp_execute_task(dev, rps_req, RPS_REQ_SIZE,
rps_resp, RPS_RESP_SIZE);
+ /* 0x34 is the FIS type for the D2H fis. There's a potential
+ * standards cockup here. sas-2 explicitly specifies the FIS
+ * should be encoded so that FIS type is in resp[24].
+ * However, some expanders endian reverse this. Undo the
+ * reversal here */
+ if (!res && resp[27] == 0x34 && resp[24] != 0x34) {
+ int i;
+
+ for (i = 0; i < 5; i++) {
+ int j = 24 + (i*4);
+ u8 a, b;
+ a = resp[j + 0];
+ b = resp[j + 1];
+ resp[j + 0] = resp[j + 3];
+ resp[j + 1] = resp[j + 2];
+ resp[j + 2] = b;
+ resp[j + 3] = a;
+ }
+ }
+
kfree(rps_req);
- return 0;
+ return res;
}
+#endif
static void sas_ex_get_linkrate(struct domain_device *parent,
struct domain_device *child,
@@ -609,6 +648,7 @@ static struct domain_device *sas_ex_discover_end_dev(
}
sas_ex_get_linkrate(parent, child, phy);
+#ifdef CONFIG_SCSI_SAS_ATA
if ((phy->attached_tproto & SAS_PROTO_STP) || phy->attached_sata_dev) {
child->dev_type = SATA_DEV;
if (phy->attached_tproto & SAS_PROTO_STP)
@@ -625,16 +665,30 @@ static struct domain_device *sas_ex_discover_end_dev(
}
memcpy(child->frame_rcvd, &child->sata_dev.rps_resp.rps.fis,
sizeof(struct dev_to_host_fis));
+
+ rphy = sas_end_device_alloc(phy->port);
+ if (unlikely(!rphy))
+ goto out_free;
+
sas_init_dev(child);
+
+ child->rphy = rphy;
+
+ spin_lock_irq(&parent->port->dev_list_lock);
+ list_add_tail(&child->dev_list_node, &parent->port->dev_list);
+ spin_unlock_irq(&parent->port->dev_list_lock);
+
res = sas_discover_sata(child);
if (res) {
SAS_DPRINTK("sas_discover_sata() for device %16llx at "
"%016llx:0x%x returned 0x%x\n",
SAS_ADDR(child->sas_addr),
SAS_ADDR(parent->sas_addr), phy_id, res);
- goto out_free;
+ goto out_list_del;
}
- } else if (phy->attached_tproto & SAS_PROTO_SSP) {
+ } else
+#endif
+ if (phy->attached_tproto & SAS_PROTO_SSP) {
child->dev_type = SAS_END_DEV;
rphy = sas_end_device_alloc(phy->port);
/* FIXME: error handling */
@@ -646,9 +700,9 @@ static struct domain_device *sas_ex_discover_end_dev(
child->rphy = rphy;
sas_fill_in_rphy(child, rphy);
- spin_lock(&parent->port->dev_list_lock);
+ spin_lock_irq(&parent->port->dev_list_lock);
list_add_tail(&child->dev_list_node, &parent->port->dev_list);
- spin_unlock(&parent->port->dev_list_lock);
+ spin_unlock_irq(&parent->port->dev_list_lock);
res = sas_discover_end_dev(child);
if (res) {
@@ -662,6 +716,7 @@ static struct domain_device *sas_ex_discover_end_dev(
SAS_DPRINTK("target proto 0x%x at %016llx:0x%x not handled\n",
phy->attached_tproto, SAS_ADDR(parent->sas_addr),
phy_id);
+ goto out_free;
}
list_add_tail(&child->siblings, &parent_ex->children);
@@ -761,9 +816,9 @@ static struct domain_device *sas_ex_discover_expander(
sas_fill_in_rphy(child, rphy);
sas_rphy_add(rphy);
- spin_lock(&parent->port->dev_list_lock);
+ spin_lock_irq(&parent->port->dev_list_lock);
list_add_tail(&child->dev_list_node, &parent->port->dev_list);
- spin_unlock(&parent->port->dev_list_lock);
+ spin_unlock_irq(&parent->port->dev_list_lock);
res = sas_discover_expander(child);
if (res) {
@@ -1359,30 +1414,6 @@ static int sas_disable_routing(struct domain_device *dev, u8 *sas_addr)
return 0;
}
-#if 0
-#define SMP_BIN_ATTR_NAME "smp_portal"
-
-static void sas_ex_smp_hook(struct domain_device *dev)
-{
- struct expander_device *ex_dev = &dev->ex_dev;
- struct bin_attribute *bin_attr = &ex_dev->smp_bin_attr;
-
- memset(bin_attr, 0, sizeof(*bin_attr));
-
- bin_attr->attr.name = SMP_BIN_ATTR_NAME;
- bin_attr->attr.mode = 0600;
-
- bin_attr->size = 0;
- bin_attr->private = NULL;
- bin_attr->read = smp_portal_read;
- bin_attr->write= smp_portal_write;
- bin_attr->mmap = NULL;
-
- ex_dev->smp_portal_pid = -1;
- init_MUTEX(&ex_dev->smp_sema);
-}
-#endif
-
/**
* sas_discover_expander -- expander discovery
* @ex: pointer to expander domain device
@@ -1844,76 +1875,49 @@ out:
return res;
}
-#if 0
-/* ---------- SMP portal ---------- */
-
-static ssize_t smp_portal_write(struct kobject *kobj,
- struct bin_attribute *bin_attr,
- char *buf, loff_t offs, size_t size)
+int sas_smp_handler(struct Scsi_Host *shost, struct sas_rphy *rphy,
+ struct request *req)
{
- struct domain_device *dev = to_dom_device(kobj);
- struct expander_device *ex = &dev->ex_dev;
-
- if (offs != 0)
- return -EFBIG;
- else if (size == 0)
- return 0;
+ struct domain_device *dev;
+ int ret, type = rphy->identify.device_type;
+ struct request *rsp = req->next_rq;
- down_interruptible(&ex->smp_sema);
- if (ex->smp_req)
- kfree(ex->smp_req);
- ex->smp_req = kzalloc(size, GFP_USER);
- if (!ex->smp_req) {
- up(&ex->smp_sema);
- return -ENOMEM;
+ if (!rsp) {
+ printk("%s: space for a smp response is missing\n",
+ __FUNCTION__);
+ return -EINVAL;
}
- memcpy(ex->smp_req, buf, size);
- ex->smp_req_size = size;
- ex->smp_portal_pid = current->pid;
- up(&ex->smp_sema);
- return size;
-}
-
-static ssize_t smp_portal_read(struct kobject *kobj,
- struct bin_attribute *bin_attr,
- char *buf, loff_t offs, size_t size)
-{
- struct domain_device *dev = to_dom_device(kobj);
- struct expander_device *ex = &dev->ex_dev;
- u8 *smp_resp;
- int res = -EINVAL;
-
- /* XXX: sysfs gives us an offset of 0x10 or 0x8 while in fact
- * it should be 0.
- */
+ /* seems aic94xx doesn't support */
+ if (!rphy) {
+ printk("%s: can we send a smp request to a host?\n",
+ __FUNCTION__);
+ return -EINVAL;
+ }
- down_interruptible(&ex->smp_sema);
- if (!ex->smp_req || ex->smp_portal_pid != current->pid)
- goto out;
+ if (type != SAS_EDGE_EXPANDER_DEVICE &&
+ type != SAS_FANOUT_EXPANDER_DEVICE) {
+ printk("%s: can we send a smp request to a device?\n",
+ __FUNCTION__);
+ return -EINVAL;
+ }
- res = 0;
- if (size == 0)
- goto out;
+ dev = sas_find_dev_by_rphy(rphy);
+ if (!dev) {
+ printk("%s: fail to find a domain_device?\n", __FUNCTION__);
+ return -EINVAL;
+ }
- res = -ENOMEM;
- smp_resp = alloc_smp_resp(size);
- if (!smp_resp)
- goto out;
- res = smp_execute_task(dev, ex->smp_req, ex->smp_req_size,
- smp_resp, size);
- if (!res) {
- memcpy(buf, smp_resp, size);
- res = size;
+ /* do we need to support multiple segments? */
+ if (req->bio->bi_vcnt > 1 || rsp->bio->bi_vcnt > 1) {
+ printk("%s: multiple segments req %u %u, rsp %u %u\n",
+ __FUNCTION__, req->bio->bi_vcnt, req->data_len,
+ rsp->bio->bi_vcnt, rsp->data_len);
+ return -EINVAL;
}
- kfree(smp_resp);
-out:
- kfree(ex->smp_req);
- ex->smp_req = NULL;
- ex->smp_req_size = 0;
- ex->smp_portal_pid = -1;
- up(&ex->smp_sema);
- return res;
+ ret = smp_execute_task(dev, bio_data(req->bio), req->data_len,
+ bio_data(rsp->bio), rsp->data_len);
+
+ return ret;
}
-#endif
diff --git a/drivers/scsi/libsas/sas_init.c b/drivers/scsi/libsas/sas_init.c
index 1396c83..9cd5abe 100644
--- a/drivers/scsi/libsas/sas_init.c
+++ b/drivers/scsi/libsas/sas_init.c
@@ -259,6 +259,7 @@ static struct sas_function_template sft = {
.phy_reset = sas_phy_reset,
.set_phy_speed = sas_set_phy_speed,
.get_linkerrors = sas_get_linkerrors,
+ .smp_handler = sas_smp_handler,
};
struct scsi_transport_template *
diff --git a/drivers/scsi/libsas/sas_internal.h b/drivers/scsi/libsas/sas_internal.h
index a78638d..2b8213b 100644
--- a/drivers/scsi/libsas/sas_internal.h
+++ b/drivers/scsi/libsas/sas_internal.h
@@ -39,6 +39,9 @@
#define SAS_DPRINTK(fmt, ...)
#endif
+#define TO_SAS_TASK(_scsi_cmd) ((void *)(_scsi_cmd)->host_scribble)
+#define ASSIGN_SAS_TASK(_sc, _t) do { (_sc)->host_scribble = (void *) _t; } while (0)
+
void sas_scsi_recover_host(struct Scsi_Host *shost);
int sas_show_class(enum sas_class class, char *buf);
diff --git a/drivers/scsi/libsas/sas_scsi_host.c b/drivers/scsi/libsas/sas_scsi_host.c
index 9c5342e..7663841 100644
--- a/drivers/scsi/libsas/sas_scsi_host.c
+++ b/drivers/scsi/libsas/sas_scsi_host.c
@@ -34,6 +34,7 @@
#include <scsi/scsi_eh.h>
#include <scsi/scsi_transport.h>
#include <scsi/scsi_transport_sas.h>
+#include <scsi/sas_ata.h>
#include "../scsi_sas_internal.h"
#include "../scsi_transport_api.h"
#include "../scsi_priv.h"
@@ -42,12 +43,10 @@
#include <linux/blkdev.h>
#include <linux/freezer.h>
#include <linux/scatterlist.h>
+#include <linux/libata.h>
/* ---------- SCSI Host glue ---------- */
-#define TO_SAS_TASK(_scsi_cmd) ((void *)(_scsi_cmd)->host_scribble)
-#define ASSIGN_SAS_TASK(_sc, _t) do { (_sc)->host_scribble = (void *) _t; } while (0)
-
static void sas_scsi_task_done(struct sas_task *task)
{
struct task_status_struct *ts = &task->task_status;
@@ -172,7 +171,7 @@ static struct sas_task *sas_create_task(struct scsi_cmnd *cmd,
return task;
}
-static int sas_queue_up(struct sas_task *task)
+int sas_queue_up(struct sas_task *task)
{
struct sas_ha_struct *sas_ha = task->dev->port->ha;
struct scsi_core *core = &sas_ha->core;
@@ -213,6 +212,16 @@ int sas_queuecommand(struct scsi_cmnd *cmd,
struct sas_ha_struct *sas_ha = dev->port->ha;
struct sas_task *task;
+ if (dev_is_sata(dev)) {
+ unsigned long flags;
+
+ spin_lock_irqsave(dev->sata_dev.ap->lock, flags);
+ res = ata_sas_queuecmd(cmd, scsi_done,
+ dev->sata_dev.ap);
+ spin_unlock_irqrestore(dev->sata_dev.ap->lock, flags);
+ goto out;
+ }
+
res = -ENOMEM;
task = sas_create_task(cmd, dev, GFP_ATOMIC);
if (!task)
@@ -684,6 +693,16 @@ enum scsi_eh_timer_return sas_scsi_timed_out(struct scsi_cmnd *cmd)
return EH_NOT_HANDLED;
}
+int sas_ioctl(struct scsi_device *sdev, int cmd, void __user *arg)
+{
+ struct domain_device *dev = sdev_to_domain_dev(sdev);
+
+ if (dev_is_sata(dev))
+ return ata_scsi_ioctl(sdev, cmd, arg);
+
+ return -EINVAL;
+}
+
struct domain_device *sas_find_dev_by_rphy(struct sas_rphy *rphy)
{
struct Scsi_Host *shost = dev_to_shost(rphy->dev.parent);
@@ -723,10 +742,17 @@ static inline struct domain_device *sas_find_target(struct scsi_target *starget)
int sas_target_alloc(struct scsi_target *starget)
{
struct domain_device *found_dev = sas_find_target(starget);
+ int res;
if (!found_dev)
return -ENODEV;
+ if (dev_is_sata(found_dev)) {
+ res = sas_ata_init_host_and_port(found_dev, starget);
+ if (res)
+ return res;
+ }
+
starget->hostdata = found_dev;
return 0;
}
@@ -741,6 +767,11 @@ int sas_slave_configure(struct scsi_device *scsi_dev)
BUG_ON(dev->rphy->identify.device_type != SAS_END_DEVICE);
+ if (dev_is_sata(dev)) {
+ ata_sas_slave_configure(scsi_dev, dev->sata_dev.ap);
+ return 0;
+ }
+
sas_ha = dev->port->ha;
sas_read_port_mode_page(scsi_dev);
@@ -764,6 +795,10 @@ int sas_slave_configure(struct scsi_device *scsi_dev)
void sas_slave_destroy(struct scsi_device *scsi_dev)
{
+ struct domain_device *dev = sdev_to_domain_dev(scsi_dev);
+
+ if (dev_is_sata(dev))
+ ata_port_disable(dev->sata_dev.ap);
}
int sas_change_queue_depth(struct scsi_device *scsi_dev, int new_depth)
@@ -980,10 +1015,38 @@ void sas_task_abort(struct sas_task *task)
return;
}
+ if (dev_is_sata(task->dev)) {
+ sas_ata_task_abort(task);
+ return;
+ }
+
scsi_req_abort_cmd(sc);
scsi_schedule_eh(sc->device->host);
}
+int sas_slave_alloc(struct scsi_device *scsi_dev)
+{
+ struct domain_device *dev = sdev_to_domain_dev(scsi_dev);
+
+ if (dev_is_sata(dev))
+ return ata_sas_port_init(dev->sata_dev.ap);
+
+ return 0;
+}
+
+void sas_target_destroy(struct scsi_target *starget)
+{
+ struct domain_device *found_dev = sas_find_target(starget);
+
+ if (!found_dev)
+ return;
+
+ if (dev_is_sata(found_dev))
+ ata_sas_port_destroy(found_dev->sata_dev.ap);
+
+ return;
+}
+
EXPORT_SYMBOL_GPL(sas_queuecommand);
EXPORT_SYMBOL_GPL(sas_target_alloc);
EXPORT_SYMBOL_GPL(sas_slave_configure);
@@ -997,3 +1060,6 @@ EXPORT_SYMBOL_GPL(sas_phy_reset);
EXPORT_SYMBOL_GPL(sas_phy_enable);
EXPORT_SYMBOL_GPL(sas_eh_device_reset_handler);
EXPORT_SYMBOL_GPL(sas_eh_bus_reset_handler);
+EXPORT_SYMBOL_GPL(sas_slave_alloc);
+EXPORT_SYMBOL_GPL(sas_target_destroy);
+EXPORT_SYMBOL_GPL(sas_ioctl);
OpenPOWER on IntegriCloud