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OpenCloudOS-Kernel/drivers/scsi/mpi3mr/mpi3mr_os.c

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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Driver for Broadcom MPI3 Storage Controllers
*
* Copyright (C) 2017-2021 Broadcom Inc.
* (mailto: mpi3mr-linuxdrv.pdl@broadcom.com)
*
*/
#include "mpi3mr.h"
/* global driver scop variables */
LIST_HEAD(mrioc_list);
DEFINE_SPINLOCK(mrioc_list_lock);
static int mrioc_ids;
static int warn_non_secure_ctlr;
MODULE_AUTHOR(MPI3MR_DRIVER_AUTHOR);
MODULE_DESCRIPTION(MPI3MR_DRIVER_DESC);
MODULE_LICENSE(MPI3MR_DRIVER_LICENSE);
MODULE_VERSION(MPI3MR_DRIVER_VERSION);
/* Module parameters*/
int logging_level;
module_param(logging_level, int, 0);
MODULE_PARM_DESC(logging_level,
" bits for enabling additional logging info (default=0)");
/* Forward declarations*/
/**
* mpi3mr_host_tag_for_scmd - Get host tag for a scmd
* @mrioc: Adapter instance reference
* @scmd: SCSI command reference
*
* Calculate the host tag based on block tag for a given scmd.
*
* Return: Valid host tag or MPI3MR_HOSTTAG_INVALID.
*/
static u16 mpi3mr_host_tag_for_scmd(struct mpi3mr_ioc *mrioc,
struct scsi_cmnd *scmd)
{
struct scmd_priv *priv = NULL;
u32 unique_tag;
u16 host_tag, hw_queue;
unique_tag = blk_mq_unique_tag(scmd->request);
hw_queue = blk_mq_unique_tag_to_hwq(unique_tag);
if (hw_queue >= mrioc->num_op_reply_q)
return MPI3MR_HOSTTAG_INVALID;
host_tag = blk_mq_unique_tag_to_tag(unique_tag);
if (WARN_ON(host_tag >= mrioc->max_host_ios))
return MPI3MR_HOSTTAG_INVALID;
priv = scsi_cmd_priv(scmd);
/*host_tag 0 is invalid hence incrementing by 1*/
priv->host_tag = host_tag + 1;
priv->scmd = scmd;
priv->in_lld_scope = 1;
priv->req_q_idx = hw_queue;
priv->chain_idx = -1;
return priv->host_tag;
}
/**
* mpi3mr_scmd_from_host_tag - Get SCSI command from host tag
* @mrioc: Adapter instance reference
* @host_tag: Host tag
* @qidx: Operational queue index
*
* Identify the block tag from the host tag and queue index and
* retrieve associated scsi command using scsi_host_find_tag().
*
* Return: SCSI command reference or NULL.
*/
static struct scsi_cmnd *mpi3mr_scmd_from_host_tag(
struct mpi3mr_ioc *mrioc, u16 host_tag, u16 qidx)
{
struct scsi_cmnd *scmd = NULL;
struct scmd_priv *priv = NULL;
u32 unique_tag = host_tag - 1;
if (WARN_ON(host_tag > mrioc->max_host_ios))
goto out;
unique_tag |= (qidx << BLK_MQ_UNIQUE_TAG_BITS);
scmd = scsi_host_find_tag(mrioc->shost, unique_tag);
if (scmd) {
priv = scsi_cmd_priv(scmd);
if (!priv->in_lld_scope)
scmd = NULL;
}
out:
return scmd;
}
/**
* mpi3mr_clear_scmd_priv - Cleanup SCSI command private date
* @mrioc: Adapter instance reference
* @scmd: SCSI command reference
*
* Invalidate the SCSI command private data to mark the command
* is not in LLD scope anymore.
*
* Return: Nothing.
*/
static void mpi3mr_clear_scmd_priv(struct mpi3mr_ioc *mrioc,
struct scsi_cmnd *scmd)
{
struct scmd_priv *priv = NULL;
priv = scsi_cmd_priv(scmd);
if (WARN_ON(priv->in_lld_scope == 0))
return;
priv->host_tag = MPI3MR_HOSTTAG_INVALID;
priv->req_q_idx = 0xFFFF;
priv->scmd = NULL;
priv->in_lld_scope = 0;
if (priv->chain_idx >= 0) {
clear_bit(priv->chain_idx, mrioc->chain_bitmap);
priv->chain_idx = -1;
}
}
static void mpi3mr_dev_rmhs_send_tm(struct mpi3mr_ioc *mrioc, u16 handle,
struct mpi3mr_drv_cmd *cmdparam, u8 iou_rc);
static void mpi3mr_fwevt_worker(struct work_struct *work);
/**
* mpi3mr_fwevt_free - firmware event memory dealloctor
* @r: k reference pointer of the firmware event
*
* Free firmware event memory when no reference.
*/
static void mpi3mr_fwevt_free(struct kref *r)
{
kfree(container_of(r, struct mpi3mr_fwevt, ref_count));
}
/**
* mpi3mr_fwevt_get - k reference incrementor
* @fwevt: Firmware event reference
*
* Increment firmware event reference count.
*/
static void mpi3mr_fwevt_get(struct mpi3mr_fwevt *fwevt)
{
kref_get(&fwevt->ref_count);
}
/**
* mpi3mr_fwevt_put - k reference decrementor
* @fwevt: Firmware event reference
*
* decrement firmware event reference count.
*/
static void mpi3mr_fwevt_put(struct mpi3mr_fwevt *fwevt)
{
kref_put(&fwevt->ref_count, mpi3mr_fwevt_free);
}
/**
* mpi3mr_alloc_fwevt - Allocate firmware event
* @len: length of firmware event data to allocate
*
* Allocate firmware event with required length and initialize
* the reference counter.
*
* Return: firmware event reference.
*/
static struct mpi3mr_fwevt *mpi3mr_alloc_fwevt(int len)
{
struct mpi3mr_fwevt *fwevt;
fwevt = kzalloc(sizeof(*fwevt) + len, GFP_ATOMIC);
if (!fwevt)
return NULL;
kref_init(&fwevt->ref_count);
return fwevt;
}
/**
* mpi3mr_fwevt_add_to_list - Add firmware event to the list
* @mrioc: Adapter instance reference
* @fwevt: Firmware event reference
*
* Add the given firmware event to the firmware event list.
*
* Return: Nothing.
*/
static void mpi3mr_fwevt_add_to_list(struct mpi3mr_ioc *mrioc,
struct mpi3mr_fwevt *fwevt)
{
unsigned long flags;
if (!mrioc->fwevt_worker_thread)
return;
spin_lock_irqsave(&mrioc->fwevt_lock, flags);
/* get fwevt reference count while adding it to fwevt_list */
mpi3mr_fwevt_get(fwevt);
INIT_LIST_HEAD(&fwevt->list);
list_add_tail(&fwevt->list, &mrioc->fwevt_list);
INIT_WORK(&fwevt->work, mpi3mr_fwevt_worker);
/* get fwevt reference count while enqueueing it to worker queue */
mpi3mr_fwevt_get(fwevt);
queue_work(mrioc->fwevt_worker_thread, &fwevt->work);
spin_unlock_irqrestore(&mrioc->fwevt_lock, flags);
}
/**
* mpi3mr_fwevt_del_from_list - Delete firmware event from list
* @mrioc: Adapter instance reference
* @fwevt: Firmware event reference
*
* Delete the given firmware event from the firmware event list.
*
* Return: Nothing.
*/
static void mpi3mr_fwevt_del_from_list(struct mpi3mr_ioc *mrioc,
struct mpi3mr_fwevt *fwevt)
{
unsigned long flags;
spin_lock_irqsave(&mrioc->fwevt_lock, flags);
if (!list_empty(&fwevt->list)) {
list_del_init(&fwevt->list);
/*
* Put fwevt reference count after
* removing it from fwevt_list
*/
mpi3mr_fwevt_put(fwevt);
}
spin_unlock_irqrestore(&mrioc->fwevt_lock, flags);
}
/**
* mpi3mr_dequeue_fwevt - Dequeue firmware event from the list
* @mrioc: Adapter instance reference
*
* Dequeue a firmware event from the firmware event list.
*
* Return: firmware event.
*/
static struct mpi3mr_fwevt *mpi3mr_dequeue_fwevt(
struct mpi3mr_ioc *mrioc)
{
unsigned long flags;
struct mpi3mr_fwevt *fwevt = NULL;
spin_lock_irqsave(&mrioc->fwevt_lock, flags);
if (!list_empty(&mrioc->fwevt_list)) {
fwevt = list_first_entry(&mrioc->fwevt_list,
struct mpi3mr_fwevt, list);
list_del_init(&fwevt->list);
/*
* Put fwevt reference count after
* removing it from fwevt_list
*/
mpi3mr_fwevt_put(fwevt);
}
spin_unlock_irqrestore(&mrioc->fwevt_lock, flags);
return fwevt;
}
/**
* mpi3mr_cleanup_fwevt_list - Cleanup firmware event list
* @mrioc: Adapter instance reference
*
* Flush all pending firmware events from the firmware event
* list.
*
* Return: Nothing.
*/
void mpi3mr_cleanup_fwevt_list(struct mpi3mr_ioc *mrioc)
{
struct mpi3mr_fwevt *fwevt = NULL;
if ((list_empty(&mrioc->fwevt_list) && !mrioc->current_event) ||
!mrioc->fwevt_worker_thread)
return;
while ((fwevt = mpi3mr_dequeue_fwevt(mrioc)) ||
(fwevt = mrioc->current_event)) {
/*
* Wait on the fwevt to complete. If this returns 1, then
* the event was never executed, and we need a put for the
* reference the work had on the fwevt.
*
* If it did execute, we wait for it to finish, and the put will
* happen from mpi3mr_process_fwevt()
*/
if (cancel_work_sync(&fwevt->work)) {
/*
* Put fwevt reference count after
* dequeuing it from worker queue
*/
mpi3mr_fwevt_put(fwevt);
/*
* Put fwevt reference count to neutralize
* kref_init increment
*/
mpi3mr_fwevt_put(fwevt);
}
}
}
/**
* mpi3mr_invalidate_devhandles -Invalidate device handles
* @mrioc: Adapter instance reference
*
* Invalidate the device handles in the target device structures
* . Called post reset prior to reinitializing the controller.
*
* Return: Nothing.
*/
void mpi3mr_invalidate_devhandles(struct mpi3mr_ioc *mrioc)
{
struct mpi3mr_tgt_dev *tgtdev;
struct mpi3mr_stgt_priv_data *tgt_priv;
list_for_each_entry(tgtdev, &mrioc->tgtdev_list, list) {
tgtdev->dev_handle = MPI3MR_INVALID_DEV_HANDLE;
if (tgtdev->starget && tgtdev->starget->hostdata) {
tgt_priv = tgtdev->starget->hostdata;
tgt_priv->dev_handle = MPI3MR_INVALID_DEV_HANDLE;
}
}
}
/**
* mpi3mr_print_scmd - print individual SCSI command
* @rq: Block request
* @data: Adapter instance reference
* @reserved: N/A. Currently not used
*
* Print the SCSI command details if it is in LLD scope.
*
* Return: true always.
*/
static bool mpi3mr_print_scmd(struct request *rq,
void *data, bool reserved)
{
struct mpi3mr_ioc *mrioc = (struct mpi3mr_ioc *)data;
struct scsi_cmnd *scmd = blk_mq_rq_to_pdu(rq);
struct scmd_priv *priv = NULL;
if (scmd) {
priv = scsi_cmd_priv(scmd);
if (!priv->in_lld_scope)
goto out;
ioc_info(mrioc, "%s :Host Tag = %d, qid = %d\n",
__func__, priv->host_tag, priv->req_q_idx + 1);
scsi_print_command(scmd);
}
out:
return(true);
}
/**
* mpi3mr_flush_scmd - Flush individual SCSI command
* @rq: Block request
* @data: Adapter instance reference
* @reserved: N/A. Currently not used
*
* Return the SCSI command to the upper layers if it is in LLD
* scope.
*
* Return: true always.
*/
static bool mpi3mr_flush_scmd(struct request *rq,
void *data, bool reserved)
{
struct mpi3mr_ioc *mrioc = (struct mpi3mr_ioc *)data;
struct scsi_cmnd *scmd = blk_mq_rq_to_pdu(rq);
struct scmd_priv *priv = NULL;
if (scmd) {
priv = scsi_cmd_priv(scmd);
if (!priv->in_lld_scope)
goto out;
mpi3mr_clear_scmd_priv(mrioc, scmd);
scsi_dma_unmap(scmd);
scmd->result = DID_RESET << 16;
scsi_print_command(scmd);
scmd->scsi_done(scmd);
mrioc->flush_io_count++;
}
out:
return(true);
}
/**
* mpi3mr_flush_host_io - Flush host I/Os
* @mrioc: Adapter instance reference
*
* Flush all of the pending I/Os by calling
* blk_mq_tagset_busy_iter() for each possible tag. This is
* executed post controller reset
*
* Return: Nothing.
*/
void mpi3mr_flush_host_io(struct mpi3mr_ioc *mrioc)
{
struct Scsi_Host *shost = mrioc->shost;
mrioc->flush_io_count = 0;
ioc_info(mrioc, "%s :Flushing Host I/O cmds post reset\n", __func__);
blk_mq_tagset_busy_iter(&shost->tag_set,
mpi3mr_flush_scmd, (void *)mrioc);
ioc_info(mrioc, "%s :Flushed %d Host I/O cmds\n", __func__,
mrioc->flush_io_count);
}
/**
* mpi3mr_alloc_tgtdev - target device allocator
*
* Allocate target device instance and initialize the reference
* count
*
* Return: target device instance.
*/
static struct mpi3mr_tgt_dev *mpi3mr_alloc_tgtdev(void)
{
struct mpi3mr_tgt_dev *tgtdev;
tgtdev = kzalloc(sizeof(*tgtdev), GFP_ATOMIC);
if (!tgtdev)
return NULL;
kref_init(&tgtdev->ref_count);
return tgtdev;
}
/**
* mpi3mr_tgtdev_add_to_list -Add tgtdevice to the list
* @mrioc: Adapter instance reference
* @tgtdev: Target device
*
* Add the target device to the target device list
*
* Return: Nothing.
*/
static void mpi3mr_tgtdev_add_to_list(struct mpi3mr_ioc *mrioc,
struct mpi3mr_tgt_dev *tgtdev)
{
unsigned long flags;
spin_lock_irqsave(&mrioc->tgtdev_lock, flags);
mpi3mr_tgtdev_get(tgtdev);
INIT_LIST_HEAD(&tgtdev->list);
list_add_tail(&tgtdev->list, &mrioc->tgtdev_list);
spin_unlock_irqrestore(&mrioc->tgtdev_lock, flags);
}
/**
* mpi3mr_tgtdev_del_from_list -Delete tgtdevice from the list
* @mrioc: Adapter instance reference
* @tgtdev: Target device
*
* Remove the target device from the target device list
*
* Return: Nothing.
*/
static void mpi3mr_tgtdev_del_from_list(struct mpi3mr_ioc *mrioc,
struct mpi3mr_tgt_dev *tgtdev)
{
unsigned long flags;
spin_lock_irqsave(&mrioc->tgtdev_lock, flags);
if (!list_empty(&tgtdev->list)) {
list_del_init(&tgtdev->list);
mpi3mr_tgtdev_put(tgtdev);
}
spin_unlock_irqrestore(&mrioc->tgtdev_lock, flags);
}
/**
* __mpi3mr_get_tgtdev_by_handle -Get tgtdev from device handle
* @mrioc: Adapter instance reference
* @handle: Device handle
*
* Accessor to retrieve target device from the device handle.
* Non Lock version
*
* Return: Target device reference.
*/
static struct mpi3mr_tgt_dev *__mpi3mr_get_tgtdev_by_handle(
struct mpi3mr_ioc *mrioc, u16 handle)
{
struct mpi3mr_tgt_dev *tgtdev;
assert_spin_locked(&mrioc->tgtdev_lock);
list_for_each_entry(tgtdev, &mrioc->tgtdev_list, list)
if (tgtdev->dev_handle == handle)
goto found_tgtdev;
return NULL;
found_tgtdev:
mpi3mr_tgtdev_get(tgtdev);
return tgtdev;
}
/**
* mpi3mr_get_tgtdev_by_handle -Get tgtdev from device handle
* @mrioc: Adapter instance reference
* @handle: Device handle
*
* Accessor to retrieve target device from the device handle.
* Lock version
*
* Return: Target device reference.
*/
static struct mpi3mr_tgt_dev *mpi3mr_get_tgtdev_by_handle(
struct mpi3mr_ioc *mrioc, u16 handle)
{
struct mpi3mr_tgt_dev *tgtdev;
unsigned long flags;
spin_lock_irqsave(&mrioc->tgtdev_lock, flags);
tgtdev = __mpi3mr_get_tgtdev_by_handle(mrioc, handle);
spin_unlock_irqrestore(&mrioc->tgtdev_lock, flags);
return tgtdev;
}
/**
* __mpi3mr_get_tgtdev_by_perst_id -Get tgtdev from persist ID
* @mrioc: Adapter instance reference
* @persist_id: Persistent ID
*
* Accessor to retrieve target device from the Persistent ID.
* Non Lock version
*
* Return: Target device reference.
*/
static struct mpi3mr_tgt_dev *__mpi3mr_get_tgtdev_by_perst_id(
struct mpi3mr_ioc *mrioc, u16 persist_id)
{
struct mpi3mr_tgt_dev *tgtdev;
assert_spin_locked(&mrioc->tgtdev_lock);
list_for_each_entry(tgtdev, &mrioc->tgtdev_list, list)
if (tgtdev->perst_id == persist_id)
goto found_tgtdev;
return NULL;
found_tgtdev:
mpi3mr_tgtdev_get(tgtdev);
return tgtdev;
}
/**
* mpi3mr_get_tgtdev_by_perst_id -Get tgtdev from persistent ID
* @mrioc: Adapter instance reference
* @persist_id: Persistent ID
*
* Accessor to retrieve target device from the Persistent ID.
* Lock version
*
* Return: Target device reference.
*/
static struct mpi3mr_tgt_dev *mpi3mr_get_tgtdev_by_perst_id(
struct mpi3mr_ioc *mrioc, u16 persist_id)
{
struct mpi3mr_tgt_dev *tgtdev;
unsigned long flags;
spin_lock_irqsave(&mrioc->tgtdev_lock, flags);
tgtdev = __mpi3mr_get_tgtdev_by_perst_id(mrioc, persist_id);
spin_unlock_irqrestore(&mrioc->tgtdev_lock, flags);
return tgtdev;
}
/**
* __mpi3mr_get_tgtdev_from_tgtpriv -Get tgtdev from tgt private
* @mrioc: Adapter instance reference
* @tgt_priv: Target private data
*
* Accessor to return target device from the target private
* data. Non Lock version
*
* Return: Target device reference.
*/
static struct mpi3mr_tgt_dev *__mpi3mr_get_tgtdev_from_tgtpriv(
struct mpi3mr_ioc *mrioc, struct mpi3mr_stgt_priv_data *tgt_priv)
{
struct mpi3mr_tgt_dev *tgtdev;
assert_spin_locked(&mrioc->tgtdev_lock);
tgtdev = tgt_priv->tgt_dev;
if (tgtdev)
mpi3mr_tgtdev_get(tgtdev);
return tgtdev;
}
/**
* mpi3mr_remove_tgtdev_from_host - Remove dev from upper layers
* @mrioc: Adapter instance reference
* @tgtdev: Target device structure
*
* Checks whether the device is exposed to upper layers and if it
* is then remove the device from upper layers by calling
* scsi_remove_target().
*
* Return: 0 on success, non zero on failure.
*/
static void mpi3mr_remove_tgtdev_from_host(struct mpi3mr_ioc *mrioc,
struct mpi3mr_tgt_dev *tgtdev)
{
struct mpi3mr_stgt_priv_data *tgt_priv;
ioc_info(mrioc, "%s :Removing handle(0x%04x), wwid(0x%016llx)\n",
__func__, tgtdev->dev_handle, (unsigned long long)tgtdev->wwid);
if (tgtdev->starget && tgtdev->starget->hostdata) {
tgt_priv = tgtdev->starget->hostdata;
tgt_priv->dev_handle = MPI3MR_INVALID_DEV_HANDLE;
}
if (tgtdev->starget) {
scsi_remove_target(&tgtdev->starget->dev);
tgtdev->host_exposed = 0;
}
ioc_info(mrioc, "%s :Removed handle(0x%04x), wwid(0x%016llx)\n",
__func__, tgtdev->dev_handle, (unsigned long long)tgtdev->wwid);
}
/**
* mpi3mr_report_tgtdev_to_host - Expose device to upper layers
* @mrioc: Adapter instance reference
* @perst_id: Persistent ID of the device
*
* Checks whether the device can be exposed to upper layers and
* if it is not then expose the device to upper layers by
* calling scsi_scan_target().
*
* Return: 0 on success, non zero on failure.
*/
static int mpi3mr_report_tgtdev_to_host(struct mpi3mr_ioc *mrioc,
u16 perst_id)
{
int retval = 0;
struct mpi3mr_tgt_dev *tgtdev;
tgtdev = mpi3mr_get_tgtdev_by_perst_id(mrioc, perst_id);
if (!tgtdev) {
retval = -1;
goto out;
}
if (tgtdev->is_hidden) {
retval = -1;
goto out;
}
if (!tgtdev->host_exposed && !mrioc->reset_in_progress) {
tgtdev->host_exposed = 1;
scsi_scan_target(&mrioc->shost->shost_gendev, 0,
tgtdev->perst_id,
SCAN_WILD_CARD, SCSI_SCAN_INITIAL);
if (!tgtdev->starget)
tgtdev->host_exposed = 0;
}
out:
if (tgtdev)
mpi3mr_tgtdev_put(tgtdev);
return retval;
}
/**
* mpi3mr_change_queue_depth- Change QD callback handler
* @sdev: SCSI device reference
* @q_depth: Queue depth
*
* Validate and limit QD and call scsi_change_queue_depth.
*
* Return: return value of scsi_change_queue_depth
*/
static int mpi3mr_change_queue_depth(struct scsi_device *sdev,
int q_depth)
{
struct scsi_target *starget = scsi_target(sdev);
struct Scsi_Host *shost = dev_to_shost(&starget->dev);
int retval = 0;
if (!sdev->tagged_supported)
q_depth = 1;
if (q_depth > shost->can_queue)
q_depth = shost->can_queue;
else if (!q_depth)
q_depth = MPI3MR_DEFAULT_SDEV_QD;
retval = scsi_change_queue_depth(sdev, q_depth);
return retval;
}
/**
* mpi3mr_update_sdev - Update SCSI device information
* @sdev: SCSI device reference
* @data: target device reference
*
* This is an iterator function called for each SCSI device in a
* target to update the target specific information into each
* SCSI device.
*
* Return: Nothing.
*/
static void
mpi3mr_update_sdev(struct scsi_device *sdev, void *data)
{
struct mpi3mr_tgt_dev *tgtdev;
tgtdev = (struct mpi3mr_tgt_dev *)data;
if (!tgtdev)
return;
mpi3mr_change_queue_depth(sdev, tgtdev->q_depth);
switch (tgtdev->dev_type) {
case MPI3_DEVICE_DEVFORM_PCIE:
/*The block layer hw sector size = 512*/
blk_queue_max_hw_sectors(sdev->request_queue,
tgtdev->dev_spec.pcie_inf.mdts / 512);
blk_queue_virt_boundary(sdev->request_queue,
((1 << tgtdev->dev_spec.pcie_inf.pgsz) - 1));
break;
default:
break;
}
}
/**
* mpi3mr_rfresh_tgtdevs - Refresh target device exposure
* @mrioc: Adapter instance reference
*
* This is executed post controller reset to identify any
* missing devices during reset and remove from the upper layers
* or expose any newly detected device to the upper layers.
*
* Return: Nothing.
*/
void mpi3mr_rfresh_tgtdevs(struct mpi3mr_ioc *mrioc)
{
struct mpi3mr_tgt_dev *tgtdev, *tgtdev_next;
list_for_each_entry_safe(tgtdev, tgtdev_next, &mrioc->tgtdev_list,
list) {
if ((tgtdev->dev_handle == MPI3MR_INVALID_DEV_HANDLE) &&
tgtdev->host_exposed) {
mpi3mr_remove_tgtdev_from_host(mrioc, tgtdev);
mpi3mr_tgtdev_del_from_list(mrioc, tgtdev);
mpi3mr_tgtdev_put(tgtdev);
}
}
tgtdev = NULL;
list_for_each_entry(tgtdev, &mrioc->tgtdev_list, list) {
if ((tgtdev->dev_handle != MPI3MR_INVALID_DEV_HANDLE) &&
!tgtdev->is_hidden && !tgtdev->host_exposed)
mpi3mr_report_tgtdev_to_host(mrioc, tgtdev->perst_id);
}
}
/**
* mpi3mr_update_tgtdev - DevStatusChange evt bottomhalf
* @mrioc: Adapter instance reference
* @tgtdev: Target device internal structure
* @dev_pg0: New device page0
*
* Update the information from the device page0 into the driver
* cached target device structure.
*
* Return: Nothing.
*/
static void mpi3mr_update_tgtdev(struct mpi3mr_ioc *mrioc,
struct mpi3mr_tgt_dev *tgtdev, struct mpi3_device_page0 *dev_pg0)
{
u16 flags = 0;
struct mpi3mr_stgt_priv_data *scsi_tgt_priv_data;
tgtdev->perst_id = le16_to_cpu(dev_pg0->persistent_id);
tgtdev->dev_handle = le16_to_cpu(dev_pg0->dev_handle);
tgtdev->dev_type = dev_pg0->device_form;
tgtdev->encl_handle = le16_to_cpu(dev_pg0->enclosure_handle);
tgtdev->parent_handle = le16_to_cpu(dev_pg0->parent_dev_handle);
tgtdev->slot = le16_to_cpu(dev_pg0->slot);
tgtdev->q_depth = le16_to_cpu(dev_pg0->queue_depth);
tgtdev->wwid = le64_to_cpu(dev_pg0->wwid);
flags = le16_to_cpu(dev_pg0->flags);
tgtdev->is_hidden = (flags & MPI3_DEVICE0_FLAGS_HIDDEN);
if (tgtdev->starget && tgtdev->starget->hostdata) {
scsi_tgt_priv_data = (struct mpi3mr_stgt_priv_data *)
tgtdev->starget->hostdata;
scsi_tgt_priv_data->perst_id = tgtdev->perst_id;
scsi_tgt_priv_data->dev_handle = tgtdev->dev_handle;
scsi_tgt_priv_data->dev_type = tgtdev->dev_type;
}
switch (tgtdev->dev_type) {
case MPI3_DEVICE_DEVFORM_SAS_SATA:
{
struct mpi3_device0_sas_sata_format *sasinf =
&dev_pg0->device_specific.sas_sata_format;
u16 dev_info = le16_to_cpu(sasinf->device_info);
tgtdev->dev_spec.sas_sata_inf.dev_info = dev_info;
tgtdev->dev_spec.sas_sata_inf.sas_address =
le64_to_cpu(sasinf->sas_address);
if ((dev_info & MPI3_SAS_DEVICE_INFO_DEVICE_TYPE_MASK) !=
MPI3_SAS_DEVICE_INFO_DEVICE_TYPE_END_DEVICE)
tgtdev->is_hidden = 1;
else if (!(dev_info & (MPI3_SAS_DEVICE_INFO_STP_SATA_TARGET |
MPI3_SAS_DEVICE_INFO_SSP_TARGET)))
tgtdev->is_hidden = 1;
break;
}
case MPI3_DEVICE_DEVFORM_PCIE:
{
struct mpi3_device0_pcie_format *pcieinf =
&dev_pg0->device_specific.pcie_format;
u16 dev_info = le16_to_cpu(pcieinf->device_info);
tgtdev->dev_spec.pcie_inf.capb =
le32_to_cpu(pcieinf->capabilities);
tgtdev->dev_spec.pcie_inf.mdts = MPI3MR_DEFAULT_MDTS;
/* 2^12 = 4096 */
tgtdev->dev_spec.pcie_inf.pgsz = 12;
if (dev_pg0->access_status == MPI3_DEVICE0_ASTATUS_NO_ERRORS) {
tgtdev->dev_spec.pcie_inf.mdts =
le32_to_cpu(pcieinf->maximum_data_transfer_size);
tgtdev->dev_spec.pcie_inf.pgsz = pcieinf->page_size;
tgtdev->dev_spec.pcie_inf.reset_to =
pcieinf->controller_reset_to;
tgtdev->dev_spec.pcie_inf.abort_to =
pcieinf->nv_me_abort_to;
}
if (tgtdev->dev_spec.pcie_inf.mdts > (1024 * 1024))
tgtdev->dev_spec.pcie_inf.mdts = (1024 * 1024);
if ((dev_info & MPI3_DEVICE0_PCIE_DEVICE_INFO_TYPE_MASK) !=
MPI3_DEVICE0_PCIE_DEVICE_INFO_TYPE_NVME_DEVICE)
tgtdev->is_hidden = 1;
break;
}
case MPI3_DEVICE_DEVFORM_VD:
{
struct mpi3_device0_vd_format *vdinf =
&dev_pg0->device_specific.vd_format;
tgtdev->dev_spec.vol_inf.state = vdinf->vd_state;
if (vdinf->vd_state == MPI3_DEVICE0_VD_STATE_OFFLINE)
tgtdev->is_hidden = 1;
break;
}
default:
break;
}
}
/**
* mpi3mr_devstatuschg_evt_bh - DevStatusChange evt bottomhalf
* @mrioc: Adapter instance reference
* @fwevt: Firmware event information.
*
* Process Device status Change event and based on device's new
* information, either expose the device to the upper layers, or
* remove the device from upper layers.
*
* Return: Nothing.
*/
static void mpi3mr_devstatuschg_evt_bh(struct mpi3mr_ioc *mrioc,
struct mpi3mr_fwevt *fwevt)
{
u16 dev_handle = 0;
u8 uhide = 0, delete = 0, cleanup = 0;
struct mpi3mr_tgt_dev *tgtdev = NULL;
struct mpi3_event_data_device_status_change *evtdata =
(struct mpi3_event_data_device_status_change *)fwevt->event_data;
dev_handle = le16_to_cpu(evtdata->dev_handle);
ioc_info(mrioc,
"%s :device status change: handle(0x%04x): reason code(0x%x)\n",
__func__, dev_handle, evtdata->reason_code);
switch (evtdata->reason_code) {
case MPI3_EVENT_DEV_STAT_RC_HIDDEN:
delete = 1;
break;
case MPI3_EVENT_DEV_STAT_RC_NOT_HIDDEN:
uhide = 1;
break;
case MPI3_EVENT_DEV_STAT_RC_VD_NOT_RESPONDING:
delete = 1;
cleanup = 1;
break;
default:
ioc_info(mrioc, "%s :Unhandled reason code(0x%x)\n", __func__,
evtdata->reason_code);
break;
}
tgtdev = mpi3mr_get_tgtdev_by_handle(mrioc, dev_handle);
if (!tgtdev)
goto out;
if (uhide) {
tgtdev->is_hidden = 0;
if (!tgtdev->host_exposed)
mpi3mr_report_tgtdev_to_host(mrioc, tgtdev->perst_id);
}
if (tgtdev->starget && tgtdev->starget->hostdata) {
if (delete)
mpi3mr_remove_tgtdev_from_host(mrioc, tgtdev);
}
if (cleanup) {
mpi3mr_tgtdev_del_from_list(mrioc, tgtdev);
mpi3mr_tgtdev_put(tgtdev);
}
out:
if (tgtdev)
mpi3mr_tgtdev_put(tgtdev);
}
/**
* mpi3mr_devinfochg_evt_bh - DeviceInfoChange evt bottomhalf
* @mrioc: Adapter instance reference
* @dev_pg0: New device page0
*
* Process Device Info Change event and based on device's new
* information, either expose the device to the upper layers, or
* remove the device from upper layers or update the details of
* the device.
*
* Return: Nothing.
*/
static void mpi3mr_devinfochg_evt_bh(struct mpi3mr_ioc *mrioc,
struct mpi3_device_page0 *dev_pg0)
{
struct mpi3mr_tgt_dev *tgtdev = NULL;
u16 dev_handle = 0, perst_id = 0;
perst_id = le16_to_cpu(dev_pg0->persistent_id);
dev_handle = le16_to_cpu(dev_pg0->dev_handle);
ioc_info(mrioc,
"%s :Device info change: handle(0x%04x): persist_id(0x%x)\n",
__func__, dev_handle, perst_id);
tgtdev = mpi3mr_get_tgtdev_by_handle(mrioc, dev_handle);
if (!tgtdev)
goto out;
mpi3mr_update_tgtdev(mrioc, tgtdev, dev_pg0);
if (!tgtdev->is_hidden && !tgtdev->host_exposed)
mpi3mr_report_tgtdev_to_host(mrioc, perst_id);
if (tgtdev->is_hidden && tgtdev->host_exposed)
mpi3mr_remove_tgtdev_from_host(mrioc, tgtdev);
if (!tgtdev->is_hidden && tgtdev->host_exposed && tgtdev->starget)
starget_for_each_device(tgtdev->starget, (void *)tgtdev,
mpi3mr_update_sdev);
out:
if (tgtdev)
mpi3mr_tgtdev_put(tgtdev);
}
/**
* mpi3mr_sastopochg_evt_bh - SASTopologyChange evt bottomhalf
* @mrioc: Adapter instance reference
* @fwevt: Firmware event reference
*
* Prints information about the SAS topology change event and
* for "not responding" event code, removes the device from the
* upper layers.
*
* Return: Nothing.
*/
static void mpi3mr_sastopochg_evt_bh(struct mpi3mr_ioc *mrioc,
struct mpi3mr_fwevt *fwevt)
{
struct mpi3_event_data_sas_topology_change_list *event_data =
(struct mpi3_event_data_sas_topology_change_list *)fwevt->event_data;
int i;
u16 handle;
u8 reason_code;
struct mpi3mr_tgt_dev *tgtdev = NULL;
for (i = 0; i < event_data->num_entries; i++) {
handle = le16_to_cpu(event_data->phy_entry[i].attached_dev_handle);
if (!handle)
continue;
tgtdev = mpi3mr_get_tgtdev_by_handle(mrioc, handle);
if (!tgtdev)
continue;
reason_code = event_data->phy_entry[i].status &
MPI3_EVENT_SAS_TOPO_PHY_RC_MASK;
switch (reason_code) {
case MPI3_EVENT_SAS_TOPO_PHY_RC_TARG_NOT_RESPONDING:
if (tgtdev->host_exposed)
mpi3mr_remove_tgtdev_from_host(mrioc, tgtdev);
mpi3mr_tgtdev_del_from_list(mrioc, tgtdev);
mpi3mr_tgtdev_put(tgtdev);
break;
default:
break;
}
if (tgtdev)
mpi3mr_tgtdev_put(tgtdev);
}
}
/**
* mpi3mr_pcietopochg_evt_bh - PCIeTopologyChange evt bottomhalf
* @mrioc: Adapter instance reference
* @fwevt: Firmware event reference
*
* Prints information about the PCIe topology change event and
* for "not responding" event code, removes the device from the
* upper layers.
*
* Return: Nothing.
*/
static void mpi3mr_pcietopochg_evt_bh(struct mpi3mr_ioc *mrioc,
struct mpi3mr_fwevt *fwevt)
{
struct mpi3_event_data_pcie_topology_change_list *event_data =
(struct mpi3_event_data_pcie_topology_change_list *)fwevt->event_data;
int i;
u16 handle;
u8 reason_code;
struct mpi3mr_tgt_dev *tgtdev = NULL;
for (i = 0; i < event_data->num_entries; i++) {
handle =
le16_to_cpu(event_data->port_entry[i].attached_dev_handle);
if (!handle)
continue;
tgtdev = mpi3mr_get_tgtdev_by_handle(mrioc, handle);
if (!tgtdev)
continue;
reason_code = event_data->port_entry[i].port_status;
switch (reason_code) {
case MPI3_EVENT_PCIE_TOPO_PS_NOT_RESPONDING:
if (tgtdev->host_exposed)
mpi3mr_remove_tgtdev_from_host(mrioc, tgtdev);
mpi3mr_tgtdev_del_from_list(mrioc, tgtdev);
mpi3mr_tgtdev_put(tgtdev);
break;
default:
break;
}
if (tgtdev)
mpi3mr_tgtdev_put(tgtdev);
}
}
/**
* mpi3mr_fwevt_bh - Firmware event bottomhalf handler
* @mrioc: Adapter instance reference
* @fwevt: Firmware event reference
*
* Identifies the firmware event and calls corresponding bottomg
* half handler and sends event acknowledgment if required.
*
* Return: Nothing.
*/
static void mpi3mr_fwevt_bh(struct mpi3mr_ioc *mrioc,
struct mpi3mr_fwevt *fwevt)
{
mrioc->current_event = fwevt;
mpi3mr_fwevt_del_from_list(mrioc, fwevt);
if (mrioc->stop_drv_processing)
goto out;
if (!fwevt->process_evt)
goto evt_ack;
switch (fwevt->event_id) {
case MPI3_EVENT_DEVICE_ADDED:
{
struct mpi3_device_page0 *dev_pg0 =
(struct mpi3_device_page0 *)fwevt->event_data;
mpi3mr_report_tgtdev_to_host(mrioc,
le16_to_cpu(dev_pg0->persistent_id));
break;
}
case MPI3_EVENT_DEVICE_INFO_CHANGED:
{
mpi3mr_devinfochg_evt_bh(mrioc,
(struct mpi3_device_page0 *)fwevt->event_data);
break;
}
case MPI3_EVENT_DEVICE_STATUS_CHANGE:
{
mpi3mr_devstatuschg_evt_bh(mrioc, fwevt);
break;
}
case MPI3_EVENT_SAS_TOPOLOGY_CHANGE_LIST:
{
mpi3mr_sastopochg_evt_bh(mrioc, fwevt);
break;
}
case MPI3_EVENT_PCIE_TOPOLOGY_CHANGE_LIST:
{
mpi3mr_pcietopochg_evt_bh(mrioc, fwevt);
break;
}
default:
break;
}
evt_ack:
if (fwevt->send_ack)
mpi3mr_send_event_ack(mrioc, fwevt->event_id,
fwevt->evt_ctx);
out:
/* Put fwevt reference count to neutralize kref_init increment */
mpi3mr_fwevt_put(fwevt);
mrioc->current_event = NULL;
}
/**
* mpi3mr_fwevt_worker - Firmware event worker
* @work: Work struct containing firmware event
*
* Extracts the firmware event and calls mpi3mr_fwevt_bh.
*
* Return: Nothing.
*/
static void mpi3mr_fwevt_worker(struct work_struct *work)
{
struct mpi3mr_fwevt *fwevt = container_of(work, struct mpi3mr_fwevt,
work);
mpi3mr_fwevt_bh(fwevt->mrioc, fwevt);
/*
* Put fwevt reference count after
* dequeuing it from worker queue
*/
mpi3mr_fwevt_put(fwevt);
}
/**
* mpi3mr_create_tgtdev - Create and add a target device
* @mrioc: Adapter instance reference
* @dev_pg0: Device Page 0 data
*
* If the device specified by the device page 0 data is not
* present in the driver's internal list, allocate the memory
* for the device, populate the data and add to the list, else
* update the device data. The key is persistent ID.
*
* Return: 0 on success, -ENOMEM on memory allocation failure
*/
static int mpi3mr_create_tgtdev(struct mpi3mr_ioc *mrioc,
struct mpi3_device_page0 *dev_pg0)
{
int retval = 0;
struct mpi3mr_tgt_dev *tgtdev = NULL;
u16 perst_id = 0;
perst_id = le16_to_cpu(dev_pg0->persistent_id);
tgtdev = mpi3mr_get_tgtdev_by_perst_id(mrioc, perst_id);
if (tgtdev) {
mpi3mr_update_tgtdev(mrioc, tgtdev, dev_pg0);
mpi3mr_tgtdev_put(tgtdev);
} else {
tgtdev = mpi3mr_alloc_tgtdev();
if (!tgtdev)
return -ENOMEM;
mpi3mr_update_tgtdev(mrioc, tgtdev, dev_pg0);
mpi3mr_tgtdev_add_to_list(mrioc, tgtdev);
}
return retval;
}
/**
* mpi3mr_flush_delayed_rmhs_list - Flush pending commands
* @mrioc: Adapter instance reference
*
* Flush pending commands in the delayed removal handshake list
* due to a controller reset or driver removal as a cleanup.
*
* Return: Nothing
*/
void mpi3mr_flush_delayed_rmhs_list(struct mpi3mr_ioc *mrioc)
{
struct delayed_dev_rmhs_node *_rmhs_node;
while (!list_empty(&mrioc->delayed_rmhs_list)) {
_rmhs_node = list_entry(mrioc->delayed_rmhs_list.next,
struct delayed_dev_rmhs_node, list);
list_del(&_rmhs_node->list);
kfree(_rmhs_node);
}
}
/**
* mpi3mr_dev_rmhs_complete_iou - Device removal IOUC completion
* @mrioc: Adapter instance reference
* @drv_cmd: Internal command tracker
*
* Issues a target reset TM to the firmware from the device
* removal TM pend list or retry the removal handshake sequence
* based on the IOU control request IOC status.
*
* Return: Nothing
*/
static void mpi3mr_dev_rmhs_complete_iou(struct mpi3mr_ioc *mrioc,
struct mpi3mr_drv_cmd *drv_cmd)
{
u16 cmd_idx = drv_cmd->host_tag - MPI3MR_HOSTTAG_DEVRMCMD_MIN;
struct delayed_dev_rmhs_node *delayed_dev_rmhs = NULL;
ioc_info(mrioc,
"%s :dev_rmhs_iouctrl_complete:handle(0x%04x), ioc_status(0x%04x), loginfo(0x%08x)\n",
__func__, drv_cmd->dev_handle, drv_cmd->ioc_status,
drv_cmd->ioc_loginfo);
if (drv_cmd->ioc_status != MPI3_IOCSTATUS_SUCCESS) {
if (drv_cmd->retry_count < MPI3MR_DEV_RMHS_RETRY_COUNT) {
drv_cmd->retry_count++;
ioc_info(mrioc,
"%s :dev_rmhs_iouctrl_complete: handle(0x%04x)retrying handshake retry=%d\n",
__func__, drv_cmd->dev_handle,
drv_cmd->retry_count);
mpi3mr_dev_rmhs_send_tm(mrioc, drv_cmd->dev_handle,
drv_cmd, drv_cmd->iou_rc);
return;
}
ioc_err(mrioc,
"%s :dev removal handshake failed after all retries: handle(0x%04x)\n",
__func__, drv_cmd->dev_handle);
} else {
ioc_info(mrioc,
"%s :dev removal handshake completed successfully: handle(0x%04x)\n",
__func__, drv_cmd->dev_handle);
clear_bit(drv_cmd->dev_handle, mrioc->removepend_bitmap);
}
if (!list_empty(&mrioc->delayed_rmhs_list)) {
delayed_dev_rmhs = list_entry(mrioc->delayed_rmhs_list.next,
struct delayed_dev_rmhs_node, list);
drv_cmd->dev_handle = delayed_dev_rmhs->handle;
drv_cmd->retry_count = 0;
drv_cmd->iou_rc = delayed_dev_rmhs->iou_rc;
ioc_info(mrioc,
"%s :dev_rmhs_iouctrl_complete: processing delayed TM: handle(0x%04x)\n",
__func__, drv_cmd->dev_handle);
mpi3mr_dev_rmhs_send_tm(mrioc, drv_cmd->dev_handle, drv_cmd,
drv_cmd->iou_rc);
list_del(&delayed_dev_rmhs->list);
kfree(delayed_dev_rmhs);
return;
}
drv_cmd->state = MPI3MR_CMD_NOTUSED;
drv_cmd->callback = NULL;
drv_cmd->retry_count = 0;
drv_cmd->dev_handle = MPI3MR_INVALID_DEV_HANDLE;
clear_bit(cmd_idx, mrioc->devrem_bitmap);
}
/**
* mpi3mr_dev_rmhs_complete_tm - Device removal TM completion
* @mrioc: Adapter instance reference
* @drv_cmd: Internal command tracker
*
* Issues a target reset TM to the firmware from the device
* removal TM pend list or issue IO unit control request as
* part of device removal or hidden acknowledgment handshake.
*
* Return: Nothing
*/
static void mpi3mr_dev_rmhs_complete_tm(struct mpi3mr_ioc *mrioc,
struct mpi3mr_drv_cmd *drv_cmd)
{
struct mpi3_iounit_control_request iou_ctrl;
u16 cmd_idx = drv_cmd->host_tag - MPI3MR_HOSTTAG_DEVRMCMD_MIN;
struct mpi3_scsi_task_mgmt_reply *tm_reply = NULL;
int retval;
if (drv_cmd->state & MPI3MR_CMD_REPLY_VALID)
tm_reply = (struct mpi3_scsi_task_mgmt_reply *)drv_cmd->reply;
if (tm_reply)
pr_info(IOCNAME
"dev_rmhs_tr_complete:handle(0x%04x), ioc_status(0x%04x), loginfo(0x%08x), term_count(%d)\n",
mrioc->name, drv_cmd->dev_handle, drv_cmd->ioc_status,
drv_cmd->ioc_loginfo,
le32_to_cpu(tm_reply->termination_count));
pr_info(IOCNAME "Issuing IOU CTL: handle(0x%04x) dev_rmhs idx(%d)\n",
mrioc->name, drv_cmd->dev_handle, cmd_idx);
memset(&iou_ctrl, 0, sizeof(iou_ctrl));
drv_cmd->state = MPI3MR_CMD_PENDING;
drv_cmd->is_waiting = 0;
drv_cmd->callback = mpi3mr_dev_rmhs_complete_iou;
iou_ctrl.operation = drv_cmd->iou_rc;
iou_ctrl.param16[0] = cpu_to_le16(drv_cmd->dev_handle);
iou_ctrl.host_tag = cpu_to_le16(drv_cmd->host_tag);
iou_ctrl.function = MPI3_FUNCTION_IO_UNIT_CONTROL;
retval = mpi3mr_admin_request_post(mrioc, &iou_ctrl, sizeof(iou_ctrl),
1);
if (retval) {
pr_err(IOCNAME "Issue DevRmHsTMIOUCTL: Admin post failed\n",
mrioc->name);
goto out_failed;
}
return;
out_failed:
drv_cmd->state = MPI3MR_CMD_NOTUSED;
drv_cmd->callback = NULL;
drv_cmd->dev_handle = MPI3MR_INVALID_DEV_HANDLE;
drv_cmd->retry_count = 0;
clear_bit(cmd_idx, mrioc->devrem_bitmap);
}
/**
* mpi3mr_dev_rmhs_send_tm - Issue TM for device removal
* @mrioc: Adapter instance reference
* @handle: Device handle
* @cmdparam: Internal command tracker
* @iou_rc: IO unit reason code
*
* Issues a target reset TM to the firmware or add it to a pend
* list as part of device removal or hidden acknowledgment
* handshake.
*
* Return: Nothing
*/
static void mpi3mr_dev_rmhs_send_tm(struct mpi3mr_ioc *mrioc, u16 handle,
struct mpi3mr_drv_cmd *cmdparam, u8 iou_rc)
{
struct mpi3_scsi_task_mgmt_request tm_req;
int retval = 0;
u16 cmd_idx = MPI3MR_NUM_DEVRMCMD;
u8 retrycount = 5;
struct mpi3mr_drv_cmd *drv_cmd = cmdparam;
struct delayed_dev_rmhs_node *delayed_dev_rmhs = NULL;
if (drv_cmd)
goto issue_cmd;
do {
cmd_idx = find_first_zero_bit(mrioc->devrem_bitmap,
MPI3MR_NUM_DEVRMCMD);
if (cmd_idx < MPI3MR_NUM_DEVRMCMD) {
if (!test_and_set_bit(cmd_idx, mrioc->devrem_bitmap))
break;
cmd_idx = MPI3MR_NUM_DEVRMCMD;
}
} while (retrycount--);
if (cmd_idx >= MPI3MR_NUM_DEVRMCMD) {
delayed_dev_rmhs = kzalloc(sizeof(*delayed_dev_rmhs),
GFP_ATOMIC);
if (!delayed_dev_rmhs)
return;
INIT_LIST_HEAD(&delayed_dev_rmhs->list);
delayed_dev_rmhs->handle = handle;
delayed_dev_rmhs->iou_rc = iou_rc;
list_add_tail(&delayed_dev_rmhs->list,
&mrioc->delayed_rmhs_list);
ioc_info(mrioc, "%s :DevRmHs: tr:handle(0x%04x) is postponed\n",
__func__, handle);
return;
}
drv_cmd = &mrioc->dev_rmhs_cmds[cmd_idx];
issue_cmd:
cmd_idx = drv_cmd->host_tag - MPI3MR_HOSTTAG_DEVRMCMD_MIN;
ioc_info(mrioc,
"%s :Issuing TR TM: for devhandle 0x%04x with dev_rmhs %d\n",
__func__, handle, cmd_idx);
memset(&tm_req, 0, sizeof(tm_req));
if (drv_cmd->state & MPI3MR_CMD_PENDING) {
ioc_err(mrioc, "%s :Issue TM: Command is in use\n", __func__);
goto out;
}
drv_cmd->state = MPI3MR_CMD_PENDING;
drv_cmd->is_waiting = 0;
drv_cmd->callback = mpi3mr_dev_rmhs_complete_tm;
drv_cmd->dev_handle = handle;
drv_cmd->iou_rc = iou_rc;
tm_req.dev_handle = cpu_to_le16(handle);
tm_req.task_type = MPI3_SCSITASKMGMT_TASKTYPE_TARGET_RESET;
tm_req.host_tag = cpu_to_le16(drv_cmd->host_tag);
tm_req.task_host_tag = cpu_to_le16(MPI3MR_HOSTTAG_INVALID);
tm_req.function = MPI3_FUNCTION_SCSI_TASK_MGMT;
set_bit(handle, mrioc->removepend_bitmap);
retval = mpi3mr_admin_request_post(mrioc, &tm_req, sizeof(tm_req), 1);
if (retval) {
ioc_err(mrioc, "%s :Issue DevRmHsTM: Admin Post failed\n",
__func__);
goto out_failed;
}
out:
return;
out_failed:
drv_cmd->state = MPI3MR_CMD_NOTUSED;
drv_cmd->callback = NULL;
drv_cmd->dev_handle = MPI3MR_INVALID_DEV_HANDLE;
drv_cmd->retry_count = 0;
clear_bit(cmd_idx, mrioc->devrem_bitmap);
}
/**
* mpi3mr_pcietopochg_evt_th - PCIETopologyChange evt tophalf
* @mrioc: Adapter instance reference
* @event_reply: event data
*
* Checks for the reason code and based on that either block I/O
* to device, or unblock I/O to the device, or start the device
* removal handshake with reason as remove with the firmware for
* PCIe devices.
*
* Return: Nothing
*/
static void mpi3mr_pcietopochg_evt_th(struct mpi3mr_ioc *mrioc,
struct mpi3_event_notification_reply *event_reply)
{
struct mpi3_event_data_pcie_topology_change_list *topo_evt =
(struct mpi3_event_data_pcie_topology_change_list *)event_reply->event_data;
int i;
u16 handle;
u8 reason_code;
struct mpi3mr_tgt_dev *tgtdev = NULL;
struct mpi3mr_stgt_priv_data *scsi_tgt_priv_data = NULL;
for (i = 0; i < topo_evt->num_entries; i++) {
handle = le16_to_cpu(topo_evt->port_entry[i].attached_dev_handle);
if (!handle)
continue;
reason_code = topo_evt->port_entry[i].port_status;
scsi_tgt_priv_data = NULL;
tgtdev = mpi3mr_get_tgtdev_by_handle(mrioc, handle);
if (tgtdev && tgtdev->starget && tgtdev->starget->hostdata)
scsi_tgt_priv_data = (struct mpi3mr_stgt_priv_data *)
tgtdev->starget->hostdata;
switch (reason_code) {
case MPI3_EVENT_PCIE_TOPO_PS_NOT_RESPONDING:
if (scsi_tgt_priv_data) {
scsi_tgt_priv_data->dev_removed = 1;
scsi_tgt_priv_data->dev_removedelay = 0;
atomic_set(&scsi_tgt_priv_data->block_io, 0);
}
mpi3mr_dev_rmhs_send_tm(mrioc, handle, NULL,
MPI3_CTRL_OP_REMOVE_DEVICE);
break;
case MPI3_EVENT_PCIE_TOPO_PS_DELAY_NOT_RESPONDING:
if (scsi_tgt_priv_data) {
scsi_tgt_priv_data->dev_removedelay = 1;
atomic_inc(&scsi_tgt_priv_data->block_io);
}
break;
case MPI3_EVENT_PCIE_TOPO_PS_RESPONDING:
if (scsi_tgt_priv_data &&
scsi_tgt_priv_data->dev_removedelay) {
scsi_tgt_priv_data->dev_removedelay = 0;
atomic_dec_if_positive
(&scsi_tgt_priv_data->block_io);
}
break;
case MPI3_EVENT_PCIE_TOPO_PS_PORT_CHANGED:
default:
break;
}
if (tgtdev)
mpi3mr_tgtdev_put(tgtdev);
}
}
/**
* mpi3mr_sastopochg_evt_th - SASTopologyChange evt tophalf
* @mrioc: Adapter instance reference
* @event_reply: event data
*
* Checks for the reason code and based on that either block I/O
* to device, or unblock I/O to the device, or start the device
* removal handshake with reason as remove with the firmware for
* SAS/SATA devices.
*
* Return: Nothing
*/
static void mpi3mr_sastopochg_evt_th(struct mpi3mr_ioc *mrioc,
struct mpi3_event_notification_reply *event_reply)
{
struct mpi3_event_data_sas_topology_change_list *topo_evt =
(struct mpi3_event_data_sas_topology_change_list *)event_reply->event_data;
int i;
u16 handle;
u8 reason_code;
struct mpi3mr_tgt_dev *tgtdev = NULL;
struct mpi3mr_stgt_priv_data *scsi_tgt_priv_data = NULL;
for (i = 0; i < topo_evt->num_entries; i++) {
handle = le16_to_cpu(topo_evt->phy_entry[i].attached_dev_handle);
if (!handle)
continue;
reason_code = topo_evt->phy_entry[i].status &
MPI3_EVENT_SAS_TOPO_PHY_RC_MASK;
scsi_tgt_priv_data = NULL;
tgtdev = mpi3mr_get_tgtdev_by_handle(mrioc, handle);
if (tgtdev && tgtdev->starget && tgtdev->starget->hostdata)
scsi_tgt_priv_data = (struct mpi3mr_stgt_priv_data *)
tgtdev->starget->hostdata;
switch (reason_code) {
case MPI3_EVENT_SAS_TOPO_PHY_RC_TARG_NOT_RESPONDING:
if (scsi_tgt_priv_data) {
scsi_tgt_priv_data->dev_removed = 1;
scsi_tgt_priv_data->dev_removedelay = 0;
atomic_set(&scsi_tgt_priv_data->block_io, 0);
}
mpi3mr_dev_rmhs_send_tm(mrioc, handle, NULL,
MPI3_CTRL_OP_REMOVE_DEVICE);
break;
case MPI3_EVENT_SAS_TOPO_PHY_RC_DELAY_NOT_RESPONDING:
if (scsi_tgt_priv_data) {
scsi_tgt_priv_data->dev_removedelay = 1;
atomic_inc(&scsi_tgt_priv_data->block_io);
}
break;
case MPI3_EVENT_SAS_TOPO_PHY_RC_RESPONDING:
if (scsi_tgt_priv_data &&
scsi_tgt_priv_data->dev_removedelay) {
scsi_tgt_priv_data->dev_removedelay = 0;
atomic_dec_if_positive
(&scsi_tgt_priv_data->block_io);
}
case MPI3_EVENT_SAS_TOPO_PHY_RC_PHY_CHANGED:
default:
break;
}
if (tgtdev)
mpi3mr_tgtdev_put(tgtdev);
}
}
/**
* mpi3mr_devstatuschg_evt_th - DeviceStatusChange evt tophalf
* @mrioc: Adapter instance reference
* @event_reply: event data
*
* Checks for the reason code and based on that either block I/O
* to device, or unblock I/O to the device, or start the device
* removal handshake with reason as remove/hide acknowledgment
* with the firmware.
*
* Return: Nothing
*/
static void mpi3mr_devstatuschg_evt_th(struct mpi3mr_ioc *mrioc,
struct mpi3_event_notification_reply *event_reply)
{
u16 dev_handle = 0;
u8 ublock = 0, block = 0, hide = 0, delete = 0, remove = 0;
struct mpi3mr_tgt_dev *tgtdev = NULL;
struct mpi3mr_stgt_priv_data *scsi_tgt_priv_data = NULL;
struct mpi3_event_data_device_status_change *evtdata =
(struct mpi3_event_data_device_status_change *)event_reply->event_data;
if (mrioc->stop_drv_processing)
goto out;
dev_handle = le16_to_cpu(evtdata->dev_handle);
switch (evtdata->reason_code) {
case MPI3_EVENT_DEV_STAT_RC_INT_DEVICE_RESET_STRT:
case MPI3_EVENT_DEV_STAT_RC_INT_IT_NEXUS_RESET_STRT:
block = 1;
break;
case MPI3_EVENT_DEV_STAT_RC_HIDDEN:
delete = 1;
hide = 1;
break;
case MPI3_EVENT_DEV_STAT_RC_VD_NOT_RESPONDING:
delete = 1;
remove = 1;
break;
case MPI3_EVENT_DEV_STAT_RC_INT_DEVICE_RESET_CMP:
case MPI3_EVENT_DEV_STAT_RC_INT_IT_NEXUS_RESET_CMP:
ublock = 1;
break;
default:
break;
}
tgtdev = mpi3mr_get_tgtdev_by_handle(mrioc, dev_handle);
if (!tgtdev)
goto out;
if (hide)
tgtdev->is_hidden = hide;
if (tgtdev->starget && tgtdev->starget->hostdata) {
scsi_tgt_priv_data = (struct mpi3mr_stgt_priv_data *)
tgtdev->starget->hostdata;
if (block)
atomic_inc(&scsi_tgt_priv_data->block_io);
if (delete)
scsi_tgt_priv_data->dev_removed = 1;
if (ublock)
atomic_dec_if_positive(&scsi_tgt_priv_data->block_io);
}
if (remove)
mpi3mr_dev_rmhs_send_tm(mrioc, dev_handle, NULL,
MPI3_CTRL_OP_REMOVE_DEVICE);
if (hide)
mpi3mr_dev_rmhs_send_tm(mrioc, dev_handle, NULL,
MPI3_CTRL_OP_HIDDEN_ACK);
out:
if (tgtdev)
mpi3mr_tgtdev_put(tgtdev);
}
/**
* mpi3mr_energypackchg_evt_th - Energy pack change evt tophalf
* @mrioc: Adapter instance reference
* @event_reply: event data
*
* Identifies the new shutdown timeout value and update.
*
* Return: Nothing
*/
static void mpi3mr_energypackchg_evt_th(struct mpi3mr_ioc *mrioc,
struct mpi3_event_notification_reply *event_reply)
{
struct mpi3_event_data_energy_pack_change *evtdata =
(struct mpi3_event_data_energy_pack_change *)event_reply->event_data;
u16 shutdown_timeout = le16_to_cpu(evtdata->shutdown_timeout);
if (shutdown_timeout <= 0) {
ioc_warn(mrioc,
"%s :Invalid Shutdown Timeout received = %d\n",
__func__, shutdown_timeout);
return;
}
ioc_info(mrioc,
"%s :Previous Shutdown Timeout Value = %d New Shutdown Timeout Value = %d\n",
__func__, mrioc->facts.shutdown_timeout, shutdown_timeout);
mrioc->facts.shutdown_timeout = shutdown_timeout;
}
/**
* mpi3mr_os_handle_events - Firmware event handler
* @mrioc: Adapter instance reference
* @event_reply: event data
*
* Identify whteher the event has to handled and acknowledged
* and either process the event in the tophalf and/or schedule a
* bottom half through mpi3mr_fwevt_worker.
*
* Return: Nothing
*/
void mpi3mr_os_handle_events(struct mpi3mr_ioc *mrioc,
struct mpi3_event_notification_reply *event_reply)
{
u16 evt_type, sz;
struct mpi3mr_fwevt *fwevt = NULL;
bool ack_req = 0, process_evt_bh = 0;
if (mrioc->stop_drv_processing)
return;
if ((event_reply->msg_flags & MPI3_EVENT_NOTIFY_MSGFLAGS_ACK_MASK)
== MPI3_EVENT_NOTIFY_MSGFLAGS_ACK_REQUIRED)
ack_req = 1;
evt_type = event_reply->event;
switch (evt_type) {
case MPI3_EVENT_DEVICE_ADDED:
{
struct mpi3_device_page0 *dev_pg0 =
(struct mpi3_device_page0 *)event_reply->event_data;
if (mpi3mr_create_tgtdev(mrioc, dev_pg0))
ioc_err(mrioc,
"%s :Failed to add device in the device add event\n",
__func__);
else
process_evt_bh = 1;
break;
}
case MPI3_EVENT_DEVICE_STATUS_CHANGE:
{
process_evt_bh = 1;
mpi3mr_devstatuschg_evt_th(mrioc, event_reply);
break;
}
case MPI3_EVENT_SAS_TOPOLOGY_CHANGE_LIST:
{
process_evt_bh = 1;
mpi3mr_sastopochg_evt_th(mrioc, event_reply);
break;
}
case MPI3_EVENT_PCIE_TOPOLOGY_CHANGE_LIST:
{
process_evt_bh = 1;
mpi3mr_pcietopochg_evt_th(mrioc, event_reply);
break;
}
case MPI3_EVENT_DEVICE_INFO_CHANGED:
{
process_evt_bh = 1;
break;
}
case MPI3_EVENT_ENERGY_PACK_CHANGE:
{
mpi3mr_energypackchg_evt_th(mrioc, event_reply);
break;
}
case MPI3_EVENT_ENCL_DEVICE_STATUS_CHANGE:
case MPI3_EVENT_SAS_DISCOVERY:
case MPI3_EVENT_CABLE_MGMT:
case MPI3_EVENT_SAS_DEVICE_DISCOVERY_ERROR:
case MPI3_EVENT_SAS_BROADCAST_PRIMITIVE:
case MPI3_EVENT_PCIE_ENUMERATION:
break;
default:
ioc_info(mrioc, "%s :event 0x%02x is not handled\n",
__func__, evt_type);
break;
}
if (process_evt_bh || ack_req) {
sz = event_reply->event_data_length * 4;
fwevt = mpi3mr_alloc_fwevt(sz);
if (!fwevt) {
ioc_info(mrioc, "%s :failure at %s:%d/%s()!\n",
__func__, __FILE__, __LINE__, __func__);
return;
}
memcpy(fwevt->event_data, event_reply->event_data, sz);
fwevt->mrioc = mrioc;
fwevt->event_id = evt_type;
fwevt->send_ack = ack_req;
fwevt->process_evt = process_evt_bh;
fwevt->evt_ctx = le32_to_cpu(event_reply->event_context);
mpi3mr_fwevt_add_to_list(mrioc, fwevt);
}
}
/**
* mpi3mr_process_op_reply_desc - reply descriptor handler
* @mrioc: Adapter instance reference
* @reply_desc: Operational reply descriptor
* @reply_dma: place holder for reply DMA address
* @qidx: Operational queue index
*
* Process the operational reply descriptor and identifies the
* descriptor type. Based on the descriptor map the MPI3 request
* status to a SCSI command status and calls scsi_done call
* back.
*
* Return: Nothing
*/
void mpi3mr_process_op_reply_desc(struct mpi3mr_ioc *mrioc,
struct mpi3_default_reply_descriptor *reply_desc, u64 *reply_dma, u16 qidx)
{
u16 reply_desc_type, host_tag = 0;
u16 ioc_status = MPI3_IOCSTATUS_SUCCESS;
u32 ioc_loginfo = 0;
struct mpi3_status_reply_descriptor *status_desc = NULL;
struct mpi3_address_reply_descriptor *addr_desc = NULL;
struct mpi3_success_reply_descriptor *success_desc = NULL;
struct mpi3_scsi_io_reply *scsi_reply = NULL;
struct scsi_cmnd *scmd = NULL;
struct scmd_priv *priv = NULL;
u8 *sense_buf = NULL;
u8 scsi_state = 0, scsi_status = 0, sense_state = 0;
u32 xfer_count = 0, sense_count = 0, resp_data = 0;
u16 dev_handle = 0xFFFF;
struct scsi_sense_hdr sshdr;
*reply_dma = 0;
reply_desc_type = le16_to_cpu(reply_desc->reply_flags) &
MPI3_REPLY_DESCRIPT_FLAGS_TYPE_MASK;
switch (reply_desc_type) {
case MPI3_REPLY_DESCRIPT_FLAGS_TYPE_STATUS:
status_desc = (struct mpi3_status_reply_descriptor *)reply_desc;
host_tag = le16_to_cpu(status_desc->host_tag);
ioc_status = le16_to_cpu(status_desc->ioc_status);
if (ioc_status &
MPI3_REPLY_DESCRIPT_STATUS_IOCSTATUS_LOGINFOAVAIL)
ioc_loginfo = le32_to_cpu(status_desc->ioc_log_info);
ioc_status &= MPI3_REPLY_DESCRIPT_STATUS_IOCSTATUS_STATUS_MASK;
break;
case MPI3_REPLY_DESCRIPT_FLAGS_TYPE_ADDRESS_REPLY:
addr_desc = (struct mpi3_address_reply_descriptor *)reply_desc;
*reply_dma = le64_to_cpu(addr_desc->reply_frame_address);
scsi_reply = mpi3mr_get_reply_virt_addr(mrioc,
*reply_dma);
if (!scsi_reply) {
panic("%s: scsi_reply is NULL, this shouldn't happen\n",
mrioc->name);
goto out;
}
host_tag = le16_to_cpu(scsi_reply->host_tag);
ioc_status = le16_to_cpu(scsi_reply->ioc_status);
scsi_status = scsi_reply->scsi_status;
scsi_state = scsi_reply->scsi_state;
dev_handle = le16_to_cpu(scsi_reply->dev_handle);
sense_state = (scsi_state & MPI3_SCSI_STATE_SENSE_MASK);
xfer_count = le32_to_cpu(scsi_reply->transfer_count);
sense_count = le32_to_cpu(scsi_reply->sense_count);
resp_data = le32_to_cpu(scsi_reply->response_data);
sense_buf = mpi3mr_get_sensebuf_virt_addr(mrioc,
le64_to_cpu(scsi_reply->sense_data_buffer_address));
if (ioc_status &
MPI3_REPLY_DESCRIPT_STATUS_IOCSTATUS_LOGINFOAVAIL)
ioc_loginfo = le32_to_cpu(scsi_reply->ioc_log_info);
ioc_status &= MPI3_REPLY_DESCRIPT_STATUS_IOCSTATUS_STATUS_MASK;
if (sense_state == MPI3_SCSI_STATE_SENSE_BUFF_Q_EMPTY)
panic("%s: Ran out of sense buffers\n", mrioc->name);
break;
case MPI3_REPLY_DESCRIPT_FLAGS_TYPE_SUCCESS:
success_desc = (struct mpi3_success_reply_descriptor *)reply_desc;
host_tag = le16_to_cpu(success_desc->host_tag);
break;
default:
break;
}
scmd = mpi3mr_scmd_from_host_tag(mrioc, host_tag, qidx);
if (!scmd) {
panic("%s: Cannot Identify scmd for host_tag 0x%x\n",
mrioc->name, host_tag);
goto out;
}
priv = scsi_cmd_priv(scmd);
if (success_desc) {
scmd->result = DID_OK << 16;
goto out_success;
}
if (ioc_status == MPI3_IOCSTATUS_SCSI_DATA_UNDERRUN &&
xfer_count == 0 && (scsi_status == MPI3_SCSI_STATUS_BUSY ||
scsi_status == MPI3_SCSI_STATUS_RESERVATION_CONFLICT ||
scsi_status == MPI3_SCSI_STATUS_TASK_SET_FULL))
ioc_status = MPI3_IOCSTATUS_SUCCESS;
if ((sense_state == MPI3_SCSI_STATE_SENSE_VALID) && sense_count &&
sense_buf) {
u32 sz = min_t(u32, SCSI_SENSE_BUFFERSIZE, sense_count);
memcpy(scmd->sense_buffer, sense_buf, sz);
}
switch (ioc_status) {
case MPI3_IOCSTATUS_BUSY:
case MPI3_IOCSTATUS_INSUFFICIENT_RESOURCES:
scmd->result = SAM_STAT_BUSY;
break;
case MPI3_IOCSTATUS_SCSI_DEVICE_NOT_THERE:
scmd->result = DID_NO_CONNECT << 16;
break;
case MPI3_IOCSTATUS_SCSI_IOC_TERMINATED:
scmd->result = DID_SOFT_ERROR << 16;
break;
case MPI3_IOCSTATUS_SCSI_TASK_TERMINATED:
case MPI3_IOCSTATUS_SCSI_EXT_TERMINATED:
scmd->result = DID_RESET << 16;
break;
case MPI3_IOCSTATUS_SCSI_RESIDUAL_MISMATCH:
if ((xfer_count == 0) || (scmd->underflow > xfer_count))
scmd->result = DID_SOFT_ERROR << 16;
else
scmd->result = (DID_OK << 16) | scsi_status;
break;
case MPI3_IOCSTATUS_SCSI_DATA_UNDERRUN:
scmd->result = (DID_OK << 16) | scsi_status;
if (sense_state == MPI3_SCSI_STATE_SENSE_VALID)
break;
if (xfer_count < scmd->underflow) {
if (scsi_status == SAM_STAT_BUSY)
scmd->result = SAM_STAT_BUSY;
else
scmd->result = DID_SOFT_ERROR << 16;
} else if ((scsi_state & (MPI3_SCSI_STATE_NO_SCSI_STATUS)) ||
(sense_state != MPI3_SCSI_STATE_SENSE_NOT_AVAILABLE))
scmd->result = DID_SOFT_ERROR << 16;
else if (scsi_state & MPI3_SCSI_STATE_TERMINATED)
scmd->result = DID_RESET << 16;
break;
case MPI3_IOCSTATUS_SCSI_DATA_OVERRUN:
scsi_set_resid(scmd, 0);
fallthrough;
case MPI3_IOCSTATUS_SCSI_RECOVERED_ERROR:
case MPI3_IOCSTATUS_SUCCESS:
scmd->result = (DID_OK << 16) | scsi_status;
if ((scsi_state & (MPI3_SCSI_STATE_NO_SCSI_STATUS)) ||
(sense_state == MPI3_SCSI_STATE_SENSE_FAILED) ||
(sense_state == MPI3_SCSI_STATE_SENSE_BUFF_Q_EMPTY))
scmd->result = DID_SOFT_ERROR << 16;
else if (scsi_state & MPI3_SCSI_STATE_TERMINATED)
scmd->result = DID_RESET << 16;
break;
case MPI3_IOCSTATUS_SCSI_PROTOCOL_ERROR:
case MPI3_IOCSTATUS_INVALID_FUNCTION:
case MPI3_IOCSTATUS_INVALID_SGL:
case MPI3_IOCSTATUS_INTERNAL_ERROR:
case MPI3_IOCSTATUS_INVALID_FIELD:
case MPI3_IOCSTATUS_INVALID_STATE:
case MPI3_IOCSTATUS_SCSI_IO_DATA_ERROR:
case MPI3_IOCSTATUS_SCSI_TASK_MGMT_FAILED:
case MPI3_IOCSTATUS_INSUFFICIENT_POWER:
default:
scmd->result = DID_SOFT_ERROR << 16;
break;
}
if (scmd->result != (DID_OK << 16) && (scmd->cmnd[0] != ATA_12) &&
(scmd->cmnd[0] != ATA_16)) {
ioc_info(mrioc, "%s :scmd->result 0x%x\n", __func__,
scmd->result);
scsi_print_command(scmd);
ioc_info(mrioc,
"%s :Command issued to handle 0x%02x returned with error 0x%04x loginfo 0x%08x, qid %d\n",
__func__, dev_handle, ioc_status, ioc_loginfo,
priv->req_q_idx + 1);
ioc_info(mrioc,
" host_tag %d scsi_state 0x%02x scsi_status 0x%02x, xfer_cnt %d resp_data 0x%x\n",
host_tag, scsi_state, scsi_status, xfer_count, resp_data);
if (sense_buf) {
scsi_normalize_sense(sense_buf, sense_count, &sshdr);
ioc_info(mrioc,
"%s :sense_count 0x%x, sense_key 0x%x ASC 0x%x, ASCQ 0x%x\n",
__func__, sense_count, sshdr.sense_key,
sshdr.asc, sshdr.ascq);
}
}
out_success:
mpi3mr_clear_scmd_priv(mrioc, scmd);
scsi_dma_unmap(scmd);
scmd->scsi_done(scmd);
out:
if (sense_buf)
mpi3mr_repost_sense_buf(mrioc,
le64_to_cpu(scsi_reply->sense_data_buffer_address));
}
/**
* mpi3mr_get_chain_idx - get free chain buffer index
* @mrioc: Adapter instance reference
*
* Try to get a free chain buffer index from the free pool.
*
* Return: -1 on failure or the free chain buffer index
*/
static int mpi3mr_get_chain_idx(struct mpi3mr_ioc *mrioc)
{
u8 retry_count = 5;
int cmd_idx = -1;
do {
spin_lock(&mrioc->chain_buf_lock);
cmd_idx = find_first_zero_bit(mrioc->chain_bitmap,
mrioc->chain_buf_count);
if (cmd_idx < mrioc->chain_buf_count) {
set_bit(cmd_idx, mrioc->chain_bitmap);
spin_unlock(&mrioc->chain_buf_lock);
break;
}
spin_unlock(&mrioc->chain_buf_lock);
cmd_idx = -1;
} while (retry_count--);
return cmd_idx;
}
/**
* mpi3mr_prepare_sg_scmd - build scatter gather list
* @mrioc: Adapter instance reference
* @scmd: SCSI command reference
* @scsiio_req: MPI3 SCSI IO request
*
* This function maps SCSI command's data and protection SGEs to
* MPI request SGEs. If required additional 4K chain buffer is
* used to send the SGEs.
*
* Return: 0 on success, -ENOMEM on dma_map_sg failure
*/
static int mpi3mr_prepare_sg_scmd(struct mpi3mr_ioc *mrioc,
struct scsi_cmnd *scmd, struct mpi3_scsi_io_request *scsiio_req)
{
dma_addr_t chain_dma;
struct scatterlist *sg_scmd;
void *sg_local, *chain;
u32 chain_length;
int sges_left, chain_idx;
u32 sges_in_segment;
u8 simple_sgl_flags;
u8 simple_sgl_flags_last;
u8 last_chain_sgl_flags;
struct chain_element *chain_req;
struct scmd_priv *priv = NULL;
priv = scsi_cmd_priv(scmd);
simple_sgl_flags = MPI3_SGE_FLAGS_ELEMENT_TYPE_SIMPLE |
MPI3_SGE_FLAGS_DLAS_SYSTEM;
simple_sgl_flags_last = simple_sgl_flags |
MPI3_SGE_FLAGS_END_OF_LIST;
last_chain_sgl_flags = MPI3_SGE_FLAGS_ELEMENT_TYPE_LAST_CHAIN |
MPI3_SGE_FLAGS_DLAS_SYSTEM;
sg_local = &scsiio_req->sgl;
if (!scsiio_req->data_length) {
mpi3mr_build_zero_len_sge(sg_local);
return 0;
}
sg_scmd = scsi_sglist(scmd);
sges_left = scsi_dma_map(scmd);
if (sges_left < 0) {
sdev_printk(KERN_ERR, scmd->device,
"scsi_dma_map failed: request for %d bytes!\n",
scsi_bufflen(scmd));
return -ENOMEM;
}
if (sges_left > MPI3MR_SG_DEPTH) {
sdev_printk(KERN_ERR, scmd->device,
"scsi_dma_map returned unsupported sge count %d!\n",
sges_left);
return -ENOMEM;
}
sges_in_segment = (mrioc->facts.op_req_sz -
offsetof(struct mpi3_scsi_io_request, sgl)) / sizeof(struct mpi3_sge_common);
if (sges_left <= sges_in_segment)
goto fill_in_last_segment;
/* fill in main message segment when there is a chain following */
while (sges_in_segment > 1) {
mpi3mr_add_sg_single(sg_local, simple_sgl_flags,
sg_dma_len(sg_scmd), sg_dma_address(sg_scmd));
sg_scmd = sg_next(sg_scmd);
sg_local += sizeof(struct mpi3_sge_common);
sges_left--;
sges_in_segment--;
}
chain_idx = mpi3mr_get_chain_idx(mrioc);
if (chain_idx < 0)
return -1;
chain_req = &mrioc->chain_sgl_list[chain_idx];
priv->chain_idx = chain_idx;
chain = chain_req->addr;
chain_dma = chain_req->dma_addr;
sges_in_segment = sges_left;
chain_length = sges_in_segment * sizeof(struct mpi3_sge_common);
mpi3mr_add_sg_single(sg_local, last_chain_sgl_flags,
chain_length, chain_dma);
sg_local = chain;
fill_in_last_segment:
while (sges_left > 0) {
if (sges_left == 1)
mpi3mr_add_sg_single(sg_local,
simple_sgl_flags_last, sg_dma_len(sg_scmd),
sg_dma_address(sg_scmd));
else
mpi3mr_add_sg_single(sg_local, simple_sgl_flags,
sg_dma_len(sg_scmd), sg_dma_address(sg_scmd));
sg_scmd = sg_next(sg_scmd);
sg_local += sizeof(struct mpi3_sge_common);
sges_left--;
}
return 0;
}
/**
* mpi3mr_build_sg_scmd - build scatter gather list for SCSI IO
* @mrioc: Adapter instance reference
* @scmd: SCSI command reference
* @scsiio_req: MPI3 SCSI IO request
*
* This function calls mpi3mr_prepare_sg_scmd for constructing
* both data SGEs and protection information SGEs in the MPI
* format from the SCSI Command as appropriate .
*
* Return: return value of mpi3mr_prepare_sg_scmd.
*/
static int mpi3mr_build_sg_scmd(struct mpi3mr_ioc *mrioc,
struct scsi_cmnd *scmd, struct mpi3_scsi_io_request *scsiio_req)
{
int ret;
ret = mpi3mr_prepare_sg_scmd(mrioc, scmd, scsiio_req);
if (ret)
return ret;
return ret;
}
/**
* mpi3mr_print_response_code - print TM response as a string
* @mrioc: Adapter instance reference
* @resp_code: TM response code
*
* Print TM response code as a readable string.
*
* Return: Nothing.
*/
static void mpi3mr_print_response_code(struct mpi3mr_ioc *mrioc, u8 resp_code)
{
char *desc;
switch (resp_code) {
case MPI3MR_RSP_TM_COMPLETE:
desc = "task management request completed";
break;
case MPI3MR_RSP_INVALID_FRAME:
desc = "invalid frame";
break;
case MPI3MR_RSP_TM_NOT_SUPPORTED:
desc = "task management request not supported";
break;
case MPI3MR_RSP_TM_FAILED:
desc = "task management request failed";
break;
case MPI3MR_RSP_TM_SUCCEEDED:
desc = "task management request succeeded";
break;
case MPI3MR_RSP_TM_INVALID_LUN:
desc = "invalid lun";
break;
case MPI3MR_RSP_TM_OVERLAPPED_TAG:
desc = "overlapped tag attempted";
break;
case MPI3MR_RSP_IO_QUEUED_ON_IOC:
desc = "task queued, however not sent to target";
break;
default:
desc = "unknown";
break;
}
ioc_info(mrioc, "%s :response_code(0x%01x): %s\n", __func__,
resp_code, desc);
}
/**
* mpi3mr_issue_tm - Issue Task Management request
* @mrioc: Adapter instance reference
* @tm_type: Task Management type
* @handle: Device handle
* @lun: lun ID
* @htag: Host tag of the TM request
* @drv_cmd: Internal command tracker
* @resp_code: Response code place holder
* @cmd_priv: SCSI command private data
*
* Issues a Task Management Request to the controller for a
* specified target, lun and command and wait for its completion
* and check TM response. Recover the TM if it timed out by
* issuing controller reset.
*
* Return: 0 on success, non-zero on errors
*/
static int mpi3mr_issue_tm(struct mpi3mr_ioc *mrioc, u8 tm_type,
u16 handle, uint lun, u16 htag, ulong timeout,
struct mpi3mr_drv_cmd *drv_cmd,
u8 *resp_code, struct scmd_priv *cmd_priv)
{
struct mpi3_scsi_task_mgmt_request tm_req;
struct mpi3_scsi_task_mgmt_reply *tm_reply = NULL;
int retval = 0;
struct mpi3mr_tgt_dev *tgtdev = NULL;
struct mpi3mr_stgt_priv_data *scsi_tgt_priv_data = NULL;
struct op_req_qinfo *op_req_q = NULL;
ioc_info(mrioc, "%s :Issue TM: TM type (0x%x) for devhandle 0x%04x\n",
__func__, tm_type, handle);
if (mrioc->unrecoverable) {
retval = -1;
ioc_err(mrioc, "%s :Issue TM: Unrecoverable controller\n",
__func__);
goto out;
}
memset(&tm_req, 0, sizeof(tm_req));
mutex_lock(&drv_cmd->mutex);
if (drv_cmd->state & MPI3MR_CMD_PENDING) {
retval = -1;
ioc_err(mrioc, "%s :Issue TM: Command is in use\n", __func__);
mutex_unlock(&drv_cmd->mutex);
goto out;
}
if (mrioc->reset_in_progress) {
retval = -1;
ioc_err(mrioc, "%s :Issue TM: Reset in progress\n", __func__);
mutex_unlock(&drv_cmd->mutex);
goto out;
}
drv_cmd->state = MPI3MR_CMD_PENDING;
drv_cmd->is_waiting = 1;
drv_cmd->callback = NULL;
tm_req.dev_handle = cpu_to_le16(handle);
tm_req.task_type = tm_type;
tm_req.host_tag = cpu_to_le16(htag);
int_to_scsilun(lun, (struct scsi_lun *)tm_req.lun);
tm_req.function = MPI3_FUNCTION_SCSI_TASK_MGMT;
tgtdev = mpi3mr_get_tgtdev_by_handle(mrioc, handle);
if (tgtdev && tgtdev->starget && tgtdev->starget->hostdata) {
scsi_tgt_priv_data = (struct mpi3mr_stgt_priv_data *)
tgtdev->starget->hostdata;
atomic_inc(&scsi_tgt_priv_data->block_io);
}
if (cmd_priv) {
op_req_q = &mrioc->req_qinfo[cmd_priv->req_q_idx];
tm_req.task_host_tag = cpu_to_le16(cmd_priv->host_tag);
tm_req.task_request_queue_id = cpu_to_le16(op_req_q->qid);
}
if (tgtdev && (tgtdev->dev_type == MPI3_DEVICE_DEVFORM_PCIE)) {
if (cmd_priv && tgtdev->dev_spec.pcie_inf.abort_to)
timeout = tgtdev->dev_spec.pcie_inf.abort_to;
else if (!cmd_priv && tgtdev->dev_spec.pcie_inf.reset_to)
timeout = tgtdev->dev_spec.pcie_inf.reset_to;
}
init_completion(&drv_cmd->done);
retval = mpi3mr_admin_request_post(mrioc, &tm_req, sizeof(tm_req), 1);
if (retval) {
ioc_err(mrioc, "%s :Issue TM: Admin Post failed\n", __func__);
goto out_unlock;
}
wait_for_completion_timeout(&drv_cmd->done, (timeout * HZ));
if (!(drv_cmd->state & MPI3MR_CMD_COMPLETE)) {
ioc_err(mrioc, "%s :Issue TM: command timed out\n", __func__);
drv_cmd->is_waiting = 0;
retval = -1;
mpi3mr_soft_reset_handler(mrioc,
MPI3MR_RESET_FROM_TM_TIMEOUT, 1);
goto out_unlock;
}
if (drv_cmd->state & MPI3MR_CMD_REPLY_VALID)
tm_reply = (struct mpi3_scsi_task_mgmt_reply *)drv_cmd->reply;
if (drv_cmd->ioc_status != MPI3_IOCSTATUS_SUCCESS) {
ioc_err(mrioc,
"%s :Issue TM: handle(0x%04x) Failed ioc_status(0x%04x) Loginfo(0x%08x)\n",
__func__, handle, drv_cmd->ioc_status,
drv_cmd->ioc_loginfo);
retval = -1;
goto out_unlock;
}
if (!tm_reply) {
ioc_err(mrioc, "%s :Issue TM: No TM Reply message\n", __func__);
retval = -1;
goto out_unlock;
}
*resp_code = le32_to_cpu(tm_reply->response_data) &
MPI3MR_RI_MASK_RESPCODE;
switch (*resp_code) {
case MPI3MR_RSP_TM_SUCCEEDED:
case MPI3MR_RSP_TM_COMPLETE:
break;
case MPI3MR_RSP_IO_QUEUED_ON_IOC:
if (tm_type != MPI3_SCSITASKMGMT_TASKTYPE_QUERY_TASK)
retval = -1;
break;
default:
retval = -1;
break;
}
ioc_info(mrioc,
"%s :Issue TM: Completed TM type (0x%x) handle(0x%04x) ",
__func__, tm_type, handle);
ioc_info(mrioc,
"with ioc_status(0x%04x), loginfo(0x%08x), term_count(0x%08x)\n",
drv_cmd->ioc_status, drv_cmd->ioc_loginfo,
le32_to_cpu(tm_reply->termination_count));
mpi3mr_print_response_code(mrioc, *resp_code);
out_unlock:
drv_cmd->state = MPI3MR_CMD_NOTUSED;
mutex_unlock(&drv_cmd->mutex);
if (scsi_tgt_priv_data)
atomic_dec_if_positive(&scsi_tgt_priv_data->block_io);
if (tgtdev)
mpi3mr_tgtdev_put(tgtdev);
if (!retval) {
/*
* Flush all IRQ handlers by calling synchronize_irq().
* mpi3mr_ioc_disable_intr() takes care of it.
*/
mpi3mr_ioc_disable_intr(mrioc);
mpi3mr_ioc_enable_intr(mrioc);
}
out:
return retval;
}
/**
* mpi3mr_bios_param - BIOS param callback
* @sdev: SCSI device reference
* @bdev: Block device reference
* @capacity: Capacity in logical sectors
* @params: Parameter array
*
* Just the parameters with heads/secots/cylinders.
*
* Return: 0 always
*/
static int mpi3mr_bios_param(struct scsi_device *sdev,
struct block_device *bdev, sector_t capacity, int params[])
{
int heads;
int sectors;
sector_t cylinders;
ulong dummy;
heads = 64;
sectors = 32;
dummy = heads * sectors;
cylinders = capacity;
sector_div(cylinders, dummy);
if ((ulong)capacity >= 0x200000) {
heads = 255;
sectors = 63;
dummy = heads * sectors;
cylinders = capacity;
sector_div(cylinders, dummy);
}
params[0] = heads;
params[1] = sectors;
params[2] = cylinders;
return 0;
}
/**
* mpi3mr_map_queues - Map queues callback handler
* @shost: SCSI host reference
*
* Call the blk_mq_pci_map_queues with from which operational
* queue the mapping has to be done
*
* Return: return of blk_mq_pci_map_queues
*/
static int mpi3mr_map_queues(struct Scsi_Host *shost)
{
struct mpi3mr_ioc *mrioc = shost_priv(shost);
return blk_mq_pci_map_queues(&shost->tag_set.map[HCTX_TYPE_DEFAULT],
mrioc->pdev, mrioc->op_reply_q_offset);
}
/**
* mpi3mr_get_fw_pending_ios - Calculate pending I/O count
* @mrioc: Adapter instance reference
*
* Calculate the pending I/Os for the controller and return.
*
* Return: Number of pending I/Os
*/
static inline int mpi3mr_get_fw_pending_ios(struct mpi3mr_ioc *mrioc)
{
u16 i;
uint pend_ios = 0;
for (i = 0; i < mrioc->num_op_reply_q; i++)
pend_ios += atomic_read(&mrioc->op_reply_qinfo[i].pend_ios);
return pend_ios;
}
/**
* mpi3mr_print_pending_host_io - print pending I/Os
* @mrioc: Adapter instance reference
*
* Print number of pending I/Os and each I/O details prior to
* reset for debug purpose.
*
* Return: Nothing
*/
static void mpi3mr_print_pending_host_io(struct mpi3mr_ioc *mrioc)
{
struct Scsi_Host *shost = mrioc->shost;
ioc_info(mrioc, "%s :Pending commands prior to reset: %d\n",
__func__, mpi3mr_get_fw_pending_ios(mrioc));
blk_mq_tagset_busy_iter(&shost->tag_set,
mpi3mr_print_scmd, (void *)mrioc);
}
/**
* mpi3mr_wait_for_host_io - block for I/Os to complete
* @mrioc: Adapter instance reference
* @timeout: time out in seconds
* Waits for pending I/Os for the given adapter to complete or
* to hit the timeout.
*
* Return: Nothing
*/
void mpi3mr_wait_for_host_io(struct mpi3mr_ioc *mrioc, u32 timeout)
{
enum mpi3mr_iocstate iocstate;
int i = 0;
iocstate = mpi3mr_get_iocstate(mrioc);
if (iocstate != MRIOC_STATE_READY)
return;
if (!mpi3mr_get_fw_pending_ios(mrioc))
return;
ioc_info(mrioc,
"%s :Waiting for %d seconds prior to reset for %d I/O\n",
__func__, timeout, mpi3mr_get_fw_pending_ios(mrioc));
for (i = 0; i < timeout; i++) {
if (!mpi3mr_get_fw_pending_ios(mrioc))
break;
iocstate = mpi3mr_get_iocstate(mrioc);
if (iocstate != MRIOC_STATE_READY)
break;
msleep(1000);
}
ioc_info(mrioc, "%s :Pending I/Os after wait is: %d\n", __func__,
mpi3mr_get_fw_pending_ios(mrioc));
}
/**
* mpi3mr_eh_host_reset - Host reset error handling callback
* @scmd: SCSI command reference
*
* Issue controller reset if the scmd is for a Physical Device,
* if the scmd is for RAID volume, then wait for
* MPI3MR_RAID_ERRREC_RESET_TIMEOUT and checke whether any
* pending I/Os prior to issuing reset to the controller.
*
* Return: SUCCESS of successful reset else FAILED
*/
static int mpi3mr_eh_host_reset(struct scsi_cmnd *scmd)
{
struct mpi3mr_ioc *mrioc = shost_priv(scmd->device->host);
struct mpi3mr_stgt_priv_data *stgt_priv_data;
struct mpi3mr_sdev_priv_data *sdev_priv_data;
u8 dev_type = MPI3_DEVICE_DEVFORM_VD;
int retval = FAILED, ret;
sdev_priv_data = scmd->device->hostdata;
if (sdev_priv_data && sdev_priv_data->tgt_priv_data) {
stgt_priv_data = sdev_priv_data->tgt_priv_data;
dev_type = stgt_priv_data->dev_type;
}
if (dev_type == MPI3_DEVICE_DEVFORM_VD) {
mpi3mr_wait_for_host_io(mrioc,
MPI3MR_RAID_ERRREC_RESET_TIMEOUT);
if (!mpi3mr_get_fw_pending_ios(mrioc)) {
retval = SUCCESS;
goto out;
}
}
mpi3mr_print_pending_host_io(mrioc);
ret = mpi3mr_soft_reset_handler(mrioc,
MPI3MR_RESET_FROM_EH_HOS, 1);
if (ret)
goto out;
retval = SUCCESS;
out:
sdev_printk(KERN_INFO, scmd->device,
"Host reset is %s for scmd(%p)\n",
((retval == SUCCESS) ? "SUCCESS" : "FAILED"), scmd);
return retval;
}
/**
* mpi3mr_eh_target_reset - Target reset error handling callback
* @scmd: SCSI command reference
*
* Issue Target reset Task Management and verify the scmd is
* terminated successfully and return status accordingly.
*
* Return: SUCCESS of successful termination of the scmd else
* FAILED
*/
static int mpi3mr_eh_target_reset(struct scsi_cmnd *scmd)
{
struct mpi3mr_ioc *mrioc = shost_priv(scmd->device->host);
struct mpi3mr_stgt_priv_data *stgt_priv_data;
struct mpi3mr_sdev_priv_data *sdev_priv_data;
u16 dev_handle;
u8 resp_code = 0;
int retval = FAILED, ret = 0;
sdev_printk(KERN_INFO, scmd->device,
"Attempting Target Reset! scmd(%p)\n", scmd);
scsi_print_command(scmd);
sdev_priv_data = scmd->device->hostdata;
if (!sdev_priv_data || !sdev_priv_data->tgt_priv_data) {
sdev_printk(KERN_INFO, scmd->device,
"SCSI device is not available\n");
retval = SUCCESS;
goto out;
}
stgt_priv_data = sdev_priv_data->tgt_priv_data;
dev_handle = stgt_priv_data->dev_handle;
sdev_printk(KERN_INFO, scmd->device,
"Target Reset is issued to handle(0x%04x)\n",
dev_handle);
ret = mpi3mr_issue_tm(mrioc,
MPI3_SCSITASKMGMT_TASKTYPE_TARGET_RESET, dev_handle,
sdev_priv_data->lun_id, MPI3MR_HOSTTAG_BLK_TMS,
MPI3MR_RESETTM_TIMEOUT, &mrioc->host_tm_cmds, &resp_code, NULL);
if (ret)
goto out;
retval = SUCCESS;
out:
sdev_printk(KERN_INFO, scmd->device,
"Target reset is %s for scmd(%p)\n",
((retval == SUCCESS) ? "SUCCESS" : "FAILED"), scmd);
return retval;
}
/**
* mpi3mr_eh_dev_reset- Device reset error handling callback
* @scmd: SCSI command reference
*
* Issue lun reset Task Management and verify the scmd is
* terminated successfully and return status accordingly.
*
* Return: SUCCESS of successful termination of the scmd else
* FAILED
*/
static int mpi3mr_eh_dev_reset(struct scsi_cmnd *scmd)
{
struct mpi3mr_ioc *mrioc = shost_priv(scmd->device->host);
struct mpi3mr_stgt_priv_data *stgt_priv_data;
struct mpi3mr_sdev_priv_data *sdev_priv_data;
u16 dev_handle;
u8 resp_code = 0;
int retval = FAILED, ret = 0;
sdev_printk(KERN_INFO, scmd->device,
"Attempting Device(lun) Reset! scmd(%p)\n", scmd);
scsi_print_command(scmd);
sdev_priv_data = scmd->device->hostdata;
if (!sdev_priv_data || !sdev_priv_data->tgt_priv_data) {
sdev_printk(KERN_INFO, scmd->device,
"SCSI device is not available\n");
retval = SUCCESS;
goto out;
}
stgt_priv_data = sdev_priv_data->tgt_priv_data;
dev_handle = stgt_priv_data->dev_handle;
sdev_printk(KERN_INFO, scmd->device,
"Device(lun) Reset is issued to handle(0x%04x)\n", dev_handle);
ret = mpi3mr_issue_tm(mrioc,
MPI3_SCSITASKMGMT_TASKTYPE_LOGICAL_UNIT_RESET, dev_handle,
sdev_priv_data->lun_id, MPI3MR_HOSTTAG_BLK_TMS,
MPI3MR_RESETTM_TIMEOUT, &mrioc->host_tm_cmds, &resp_code, NULL);
if (ret)
goto out;
retval = SUCCESS;
out:
sdev_printk(KERN_INFO, scmd->device,
"Device(lun) reset is %s for scmd(%p)\n",
((retval == SUCCESS) ? "SUCCESS" : "FAILED"), scmd);
return retval;
}
/**
* mpi3mr_scan_start - Scan start callback handler
* @shost: SCSI host reference
*
* Issue port enable request asynchronously.
*
* Return: Nothing
*/
static void mpi3mr_scan_start(struct Scsi_Host *shost)
{
struct mpi3mr_ioc *mrioc = shost_priv(shost);
mrioc->scan_started = 1;
ioc_info(mrioc, "%s :Issuing Port Enable\n", __func__);
if (mpi3mr_issue_port_enable(mrioc, 1)) {
ioc_err(mrioc, "%s :Issuing port enable failed\n", __func__);
mrioc->scan_started = 0;
mrioc->scan_failed = MPI3_IOCSTATUS_INTERNAL_ERROR;
}
}
/**
* mpi3mr_scan_finished - Scan finished callback handler
* @shost: SCSI host reference
* @time: Jiffies from the scan start
*
* Checks whether the port enable is completed or timedout or
* failed and set the scan status accordingly after taking any
* recovery if required.
*
* Return: 1 on scan finished or timed out, 0 for in progress
*/
static int mpi3mr_scan_finished(struct Scsi_Host *shost,
unsigned long time)
{
struct mpi3mr_ioc *mrioc = shost_priv(shost);
u32 pe_timeout = MPI3MR_PORTENABLE_TIMEOUT;
if (time >= (pe_timeout * HZ)) {
mrioc->init_cmds.is_waiting = 0;
mrioc->init_cmds.callback = NULL;
mrioc->init_cmds.state = MPI3MR_CMD_NOTUSED;
ioc_err(mrioc, "%s :port enable request timed out\n", __func__);
mrioc->is_driver_loading = 0;
mpi3mr_soft_reset_handler(mrioc,
MPI3MR_RESET_FROM_PE_TIMEOUT, 1);
}
if (mrioc->scan_failed) {
ioc_err(mrioc,
"%s :port enable failed with (ioc_status=0x%08x)\n",
__func__, mrioc->scan_failed);
mrioc->is_driver_loading = 0;
mrioc->stop_drv_processing = 1;
return 1;
}
if (mrioc->scan_started)
return 0;
ioc_info(mrioc, "%s :port enable: SUCCESS\n", __func__);
mpi3mr_start_watchdog(mrioc);
mrioc->is_driver_loading = 0;
return 1;
}
/**
* mpi3mr_slave_destroy - Slave destroy callback handler
* @sdev: SCSI device reference
*
* Cleanup and free per device(lun) private data.
*
* Return: Nothing.
*/
static void mpi3mr_slave_destroy(struct scsi_device *sdev)
{
struct Scsi_Host *shost;
struct mpi3mr_ioc *mrioc;
struct mpi3mr_stgt_priv_data *scsi_tgt_priv_data;
struct mpi3mr_tgt_dev *tgt_dev;
unsigned long flags;
struct scsi_target *starget;
if (!sdev->hostdata)
return;
starget = scsi_target(sdev);
shost = dev_to_shost(&starget->dev);
mrioc = shost_priv(shost);
scsi_tgt_priv_data = starget->hostdata;
scsi_tgt_priv_data->num_luns--;
spin_lock_irqsave(&mrioc->tgtdev_lock, flags);
tgt_dev = __mpi3mr_get_tgtdev_by_perst_id(mrioc, starget->id);
if (tgt_dev && (!scsi_tgt_priv_data->num_luns))
tgt_dev->starget = NULL;
if (tgt_dev)
mpi3mr_tgtdev_put(tgt_dev);
spin_unlock_irqrestore(&mrioc->tgtdev_lock, flags);
kfree(sdev->hostdata);
sdev->hostdata = NULL;
}
/**
* mpi3mr_target_destroy - Target destroy callback handler
* @starget: SCSI target reference
*
* Cleanup and free per target private data.
*
* Return: Nothing.
*/
static void mpi3mr_target_destroy(struct scsi_target *starget)
{
struct Scsi_Host *shost;
struct mpi3mr_ioc *mrioc;
struct mpi3mr_stgt_priv_data *scsi_tgt_priv_data;
struct mpi3mr_tgt_dev *tgt_dev;
unsigned long flags;
if (!starget->hostdata)
return;
shost = dev_to_shost(&starget->dev);
mrioc = shost_priv(shost);
scsi_tgt_priv_data = starget->hostdata;
spin_lock_irqsave(&mrioc->tgtdev_lock, flags);
tgt_dev = __mpi3mr_get_tgtdev_from_tgtpriv(mrioc, scsi_tgt_priv_data);
if (tgt_dev && (tgt_dev->starget == starget) &&
(tgt_dev->perst_id == starget->id))
tgt_dev->starget = NULL;
if (tgt_dev) {
scsi_tgt_priv_data->tgt_dev = NULL;
scsi_tgt_priv_data->perst_id = 0;
mpi3mr_tgtdev_put(tgt_dev);
mpi3mr_tgtdev_put(tgt_dev);
}
spin_unlock_irqrestore(&mrioc->tgtdev_lock, flags);
kfree(starget->hostdata);
starget->hostdata = NULL;
}
/**
* mpi3mr_slave_configure - Slave configure callback handler
* @sdev: SCSI device reference
*
* Configure queue depth, max hardware sectors and virt boundary
* as required
*
* Return: 0 always.
*/
static int mpi3mr_slave_configure(struct scsi_device *sdev)
{
struct scsi_target *starget;
struct Scsi_Host *shost;
struct mpi3mr_ioc *mrioc;
struct mpi3mr_tgt_dev *tgt_dev;
unsigned long flags;
int retval = 0;
starget = scsi_target(sdev);
shost = dev_to_shost(&starget->dev);
mrioc = shost_priv(shost);
spin_lock_irqsave(&mrioc->tgtdev_lock, flags);
tgt_dev = __mpi3mr_get_tgtdev_by_perst_id(mrioc, starget->id);
spin_unlock_irqrestore(&mrioc->tgtdev_lock, flags);
if (!tgt_dev)
return -ENXIO;
mpi3mr_change_queue_depth(sdev, tgt_dev->q_depth);
switch (tgt_dev->dev_type) {
case MPI3_DEVICE_DEVFORM_PCIE:
/*The block layer hw sector size = 512*/
blk_queue_max_hw_sectors(sdev->request_queue,
tgt_dev->dev_spec.pcie_inf.mdts / 512);
blk_queue_virt_boundary(sdev->request_queue,
((1 << tgt_dev->dev_spec.pcie_inf.pgsz) - 1));
break;
default:
break;
}
mpi3mr_tgtdev_put(tgt_dev);
return retval;
}
/**
* mpi3mr_slave_alloc -Slave alloc callback handler
* @sdev: SCSI device reference
*
* Allocate per device(lun) private data and initialize it.
*
* Return: 0 on success -ENOMEM on memory allocation failure.
*/
static int mpi3mr_slave_alloc(struct scsi_device *sdev)
{
struct Scsi_Host *shost;
struct mpi3mr_ioc *mrioc;
struct mpi3mr_stgt_priv_data *scsi_tgt_priv_data;
struct mpi3mr_tgt_dev *tgt_dev;
struct mpi3mr_sdev_priv_data *scsi_dev_priv_data;
unsigned long flags;
struct scsi_target *starget;
int retval = 0;
starget = scsi_target(sdev);
shost = dev_to_shost(&starget->dev);
mrioc = shost_priv(shost);
scsi_tgt_priv_data = starget->hostdata;
spin_lock_irqsave(&mrioc->tgtdev_lock, flags);
tgt_dev = __mpi3mr_get_tgtdev_by_perst_id(mrioc, starget->id);
if (tgt_dev) {
if (tgt_dev->starget == NULL)
tgt_dev->starget = starget;
mpi3mr_tgtdev_put(tgt_dev);
retval = 0;
} else {
spin_unlock_irqrestore(&mrioc->tgtdev_lock, flags);
return -ENXIO;
}
spin_unlock_irqrestore(&mrioc->tgtdev_lock, flags);
scsi_dev_priv_data = kzalloc(sizeof(*scsi_dev_priv_data), GFP_KERNEL);
if (!scsi_dev_priv_data)
return -ENOMEM;
scsi_dev_priv_data->lun_id = sdev->lun;
scsi_dev_priv_data->tgt_priv_data = scsi_tgt_priv_data;
sdev->hostdata = scsi_dev_priv_data;
scsi_tgt_priv_data->num_luns++;
return retval;
}
/**
* mpi3mr_target_alloc - Target alloc callback handler
* @starget: SCSI target reference
*
* Allocate per target private data and initialize it.
*
* Return: 0 on success -ENOMEM on memory allocation failure.
*/
static int mpi3mr_target_alloc(struct scsi_target *starget)
{
struct Scsi_Host *shost = dev_to_shost(&starget->dev);
struct mpi3mr_ioc *mrioc = shost_priv(shost);
struct mpi3mr_stgt_priv_data *scsi_tgt_priv_data;
struct mpi3mr_tgt_dev *tgt_dev;
unsigned long flags;
int retval = 0;
scsi_tgt_priv_data = kzalloc(sizeof(*scsi_tgt_priv_data), GFP_KERNEL);
if (!scsi_tgt_priv_data)
return -ENOMEM;
starget->hostdata = scsi_tgt_priv_data;
scsi_tgt_priv_data->starget = starget;
scsi_tgt_priv_data->dev_handle = MPI3MR_INVALID_DEV_HANDLE;
spin_lock_irqsave(&mrioc->tgtdev_lock, flags);
tgt_dev = __mpi3mr_get_tgtdev_by_perst_id(mrioc, starget->id);
if (tgt_dev && !tgt_dev->is_hidden) {
starget->hostdata = scsi_tgt_priv_data;
scsi_tgt_priv_data->starget = starget;
scsi_tgt_priv_data->dev_handle = tgt_dev->dev_handle;
scsi_tgt_priv_data->perst_id = tgt_dev->perst_id;
scsi_tgt_priv_data->dev_type = tgt_dev->dev_type;
scsi_tgt_priv_data->tgt_dev = tgt_dev;
tgt_dev->starget = starget;
atomic_set(&scsi_tgt_priv_data->block_io, 0);
retval = 0;
} else {
kfree(scsi_tgt_priv_data);
retval = -ENXIO;
}
spin_unlock_irqrestore(&mrioc->tgtdev_lock, flags);
return retval;
}
/**
* mpi3mr_check_return_unmap - Whether an unmap is allowed
* @mrioc: Adapter instance reference
* @scmd: SCSI Command reference
*
* The controller hardware cannot handle certain unmap commands
* for NVMe drives, this routine checks those and return true
* and completes the SCSI command with proper status and sense
* data.
*
* Return: TRUE for not allowed unmap, FALSE otherwise.
*/
static bool mpi3mr_check_return_unmap(struct mpi3mr_ioc *mrioc,
struct scsi_cmnd *scmd)
{
unsigned char *buf;
u16 param_len, desc_len;
param_len = get_unaligned_be16(scmd->cmnd + 7);
if (!param_len) {
ioc_warn(mrioc,
"%s: cdb received with zero parameter length\n",
__func__);
scsi_print_command(scmd);
scmd->result = DID_OK << 16;
scmd->scsi_done(scmd);
return true;
}
if (param_len < 24) {
ioc_warn(mrioc,
"%s: cdb received with invalid param_len: %d\n",
__func__, param_len);
scsi_print_command(scmd);
scmd->result = (DRIVER_SENSE << 24) |
SAM_STAT_CHECK_CONDITION;
scsi_build_sense_buffer(0, scmd->sense_buffer, ILLEGAL_REQUEST,
0x1A, 0);
scmd->scsi_done(scmd);
return true;
}
if (param_len != scsi_bufflen(scmd)) {
ioc_warn(mrioc,
"%s: cdb received with param_len: %d bufflen: %d\n",
__func__, param_len, scsi_bufflen(scmd));
scsi_print_command(scmd);
scmd->result = (DRIVER_SENSE << 24) |
SAM_STAT_CHECK_CONDITION;
scsi_build_sense_buffer(0, scmd->sense_buffer, ILLEGAL_REQUEST,
0x1A, 0);
scmd->scsi_done(scmd);
return true;
}
buf = kzalloc(scsi_bufflen(scmd), GFP_ATOMIC);
if (!buf) {
scsi_print_command(scmd);
scmd->result = (DRIVER_SENSE << 24) |
SAM_STAT_CHECK_CONDITION;
scsi_build_sense_buffer(0, scmd->sense_buffer, ILLEGAL_REQUEST,
0x55, 0x03);
scmd->scsi_done(scmd);
return true;
}
scsi_sg_copy_to_buffer(scmd, buf, scsi_bufflen(scmd));
desc_len = get_unaligned_be16(&buf[2]);
if (desc_len < 16) {
ioc_warn(mrioc,
"%s: Invalid descriptor length in param list: %d\n",
__func__, desc_len);
scsi_print_command(scmd);
scmd->result = (DRIVER_SENSE << 24) |
SAM_STAT_CHECK_CONDITION;
scsi_build_sense_buffer(0, scmd->sense_buffer, ILLEGAL_REQUEST,
0x26, 0);
scmd->scsi_done(scmd);
kfree(buf);
return true;
}
if (param_len > (desc_len + 8)) {
scsi_print_command(scmd);
ioc_warn(mrioc,
"%s: Truncating param_len(%d) to desc_len+8(%d)\n",
__func__, param_len, (desc_len + 8));
param_len = desc_len + 8;
put_unaligned_be16(param_len, scmd->cmnd + 7);
scsi_print_command(scmd);
}
kfree(buf);
return false;
}
/**
* mpi3mr_allow_scmd_to_fw - Command is allowed during shutdown
* @scmd: SCSI Command reference
*
* Checks whether a cdb is allowed during shutdown or not.
*
* Return: TRUE for allowed commands, FALSE otherwise.
*/
inline bool mpi3mr_allow_scmd_to_fw(struct scsi_cmnd *scmd)
{
switch (scmd->cmnd[0]) {
case SYNCHRONIZE_CACHE:
case START_STOP:
return true;
default:
return false;
}
}
/**
* mpi3mr_qcmd - I/O request despatcher
* @shost: SCSI Host reference
* @scmd: SCSI Command reference
*
* Issues the SCSI Command as an MPI3 request.
*
* Return: 0 on successful queueing of the request or if the
* request is completed with failure.
* SCSI_MLQUEUE_DEVICE_BUSY when the device is busy.
* SCSI_MLQUEUE_HOST_BUSY when the host queue is full.
*/
static int mpi3mr_qcmd(struct Scsi_Host *shost,
struct scsi_cmnd *scmd)
{
struct mpi3mr_ioc *mrioc = shost_priv(shost);
struct mpi3mr_stgt_priv_data *stgt_priv_data;
struct mpi3mr_sdev_priv_data *sdev_priv_data;
struct scmd_priv *scmd_priv_data = NULL;
struct mpi3_scsi_io_request *scsiio_req = NULL;
struct op_req_qinfo *op_req_q = NULL;
int retval = 0;
u16 dev_handle;
u16 host_tag;
u32 scsiio_flags = 0;
struct request *rq = scmd->request;
int iprio_class;
sdev_priv_data = scmd->device->hostdata;
if (!sdev_priv_data || !sdev_priv_data->tgt_priv_data) {
scmd->result = DID_NO_CONNECT << 16;
scmd->scsi_done(scmd);
goto out;
}
if (mrioc->stop_drv_processing &&
!(mpi3mr_allow_scmd_to_fw(scmd))) {
scmd->result = DID_NO_CONNECT << 16;
scmd->scsi_done(scmd);
goto out;
}
if (mrioc->reset_in_progress) {
retval = SCSI_MLQUEUE_HOST_BUSY;
goto out;
}
stgt_priv_data = sdev_priv_data->tgt_priv_data;
dev_handle = stgt_priv_data->dev_handle;
if (dev_handle == MPI3MR_INVALID_DEV_HANDLE) {
scmd->result = DID_NO_CONNECT << 16;
scmd->scsi_done(scmd);
goto out;
}
if (stgt_priv_data->dev_removed) {
scmd->result = DID_NO_CONNECT << 16;
scmd->scsi_done(scmd);
goto out;
}
if (atomic_read(&stgt_priv_data->block_io)) {
if (mrioc->stop_drv_processing) {
scmd->result = DID_NO_CONNECT << 16;
scmd->scsi_done(scmd);
goto out;
}
retval = SCSI_MLQUEUE_DEVICE_BUSY;
goto out;
}
if ((scmd->cmnd[0] == UNMAP) &&
(stgt_priv_data->dev_type == MPI3_DEVICE_DEVFORM_PCIE) &&
mpi3mr_check_return_unmap(mrioc, scmd))
goto out;
host_tag = mpi3mr_host_tag_for_scmd(mrioc, scmd);
if (host_tag == MPI3MR_HOSTTAG_INVALID) {
scmd->result = DID_ERROR << 16;
scmd->scsi_done(scmd);
goto out;
}
if (scmd->sc_data_direction == DMA_FROM_DEVICE)
scsiio_flags = MPI3_SCSIIO_FLAGS_DATADIRECTION_READ;
else if (scmd->sc_data_direction == DMA_TO_DEVICE)
scsiio_flags = MPI3_SCSIIO_FLAGS_DATADIRECTION_WRITE;
else
scsiio_flags = MPI3_SCSIIO_FLAGS_DATADIRECTION_NO_DATA_TRANSFER;
scsiio_flags |= MPI3_SCSIIO_FLAGS_TASKATTRIBUTE_SIMPLEQ;
if (sdev_priv_data->ncq_prio_enable) {
iprio_class = IOPRIO_PRIO_CLASS(req_get_ioprio(rq));
if (iprio_class == IOPRIO_CLASS_RT)
scsiio_flags |= 1 << MPI3_SCSIIO_FLAGS_CMDPRI_SHIFT;
}
if (scmd->cmd_len > 16)
scsiio_flags |= MPI3_SCSIIO_FLAGS_CDB_GREATER_THAN_16;
scmd_priv_data = scsi_cmd_priv(scmd);
memset(scmd_priv_data->mpi3mr_scsiio_req, 0, MPI3MR_ADMIN_REQ_FRAME_SZ);
scsiio_req = (struct mpi3_scsi_io_request *)scmd_priv_data->mpi3mr_scsiio_req;
scsiio_req->function = MPI3_FUNCTION_SCSI_IO;
scsiio_req->host_tag = cpu_to_le16(host_tag);
memcpy(scsiio_req->cdb.cdb32, scmd->cmnd, scmd->cmd_len);
scsiio_req->data_length = cpu_to_le32(scsi_bufflen(scmd));
scsiio_req->dev_handle = cpu_to_le16(dev_handle);
scsiio_req->flags = cpu_to_le32(scsiio_flags);
int_to_scsilun(sdev_priv_data->lun_id,
(struct scsi_lun *)scsiio_req->lun);
if (mpi3mr_build_sg_scmd(mrioc, scmd, scsiio_req)) {
mpi3mr_clear_scmd_priv(mrioc, scmd);
retval = SCSI_MLQUEUE_HOST_BUSY;
goto out;
}
op_req_q = &mrioc->req_qinfo[scmd_priv_data->req_q_idx];
if (mpi3mr_op_request_post(mrioc, op_req_q,
scmd_priv_data->mpi3mr_scsiio_req)) {
mpi3mr_clear_scmd_priv(mrioc, scmd);
retval = SCSI_MLQUEUE_HOST_BUSY;
goto out;
}
out:
return retval;
}
static struct scsi_host_template mpi3mr_driver_template = {
.module = THIS_MODULE,
.name = "MPI3 Storage Controller",
.proc_name = MPI3MR_DRIVER_NAME,
.queuecommand = mpi3mr_qcmd,
.target_alloc = mpi3mr_target_alloc,
.slave_alloc = mpi3mr_slave_alloc,
.slave_configure = mpi3mr_slave_configure,
.target_destroy = mpi3mr_target_destroy,
.slave_destroy = mpi3mr_slave_destroy,
.scan_finished = mpi3mr_scan_finished,
.scan_start = mpi3mr_scan_start,
.change_queue_depth = mpi3mr_change_queue_depth,
.eh_device_reset_handler = mpi3mr_eh_dev_reset,
.eh_target_reset_handler = mpi3mr_eh_target_reset,
.eh_host_reset_handler = mpi3mr_eh_host_reset,
.bios_param = mpi3mr_bios_param,
.map_queues = mpi3mr_map_queues,
.no_write_same = 1,
.can_queue = 1,
.this_id = -1,
.sg_tablesize = MPI3MR_SG_DEPTH,
/* max xfer supported is 1M (2K in 512 byte sized sectors)
*/
.max_sectors = 2048,
.cmd_per_lun = MPI3MR_MAX_CMDS_LUN,
.track_queue_depth = 1,
.cmd_size = sizeof(struct scmd_priv),
};
/**
* mpi3mr_init_drv_cmd - Initialize internal command tracker
* @cmdptr: Internal command tracker
* @host_tag: Host tag used for the specific command
*
* Initialize the internal command tracker structure with
* specified host tag.
*
* Return: Nothing.
*/
static inline void mpi3mr_init_drv_cmd(struct mpi3mr_drv_cmd *cmdptr,
u16 host_tag)
{
mutex_init(&cmdptr->mutex);
cmdptr->reply = NULL;
cmdptr->state = MPI3MR_CMD_NOTUSED;
cmdptr->dev_handle = MPI3MR_INVALID_DEV_HANDLE;
cmdptr->host_tag = host_tag;
}
/**
* mpi3mr_probe - PCI probe callback
* @pdev: PCI device instance
* @id: PCI device ID details
*
* controller initialization routine. Checks the security status
* of the controller and if it is invalid or tampered return the
* probe without initializing the controller. Otherwise,
* allocate per adapter instance through shost_priv and
* initialize controller specific data structures, initializae
* the controller hardware, add shost to the SCSI subsystem.
*
* Return: 0 on success, non-zero on failure.
*/
static int
mpi3mr_probe(struct pci_dev *pdev, const struct pci_device_id *id)
{
struct mpi3mr_ioc *mrioc = NULL;
struct Scsi_Host *shost = NULL;
int retval = 0, i;
shost = scsi_host_alloc(&mpi3mr_driver_template,
sizeof(struct mpi3mr_ioc));
if (!shost) {
retval = -ENODEV;
goto shost_failed;
}
mrioc = shost_priv(shost);
mrioc->id = mrioc_ids++;
sprintf(mrioc->driver_name, "%s", MPI3MR_DRIVER_NAME);
sprintf(mrioc->name, "%s%d", mrioc->driver_name, mrioc->id);
INIT_LIST_HEAD(&mrioc->list);
spin_lock(&mrioc_list_lock);
list_add_tail(&mrioc->list, &mrioc_list);
spin_unlock(&mrioc_list_lock);
spin_lock_init(&mrioc->admin_req_lock);
spin_lock_init(&mrioc->reply_free_queue_lock);
spin_lock_init(&mrioc->sbq_lock);
spin_lock_init(&mrioc->fwevt_lock);
spin_lock_init(&mrioc->tgtdev_lock);
spin_lock_init(&mrioc->watchdog_lock);
spin_lock_init(&mrioc->chain_buf_lock);
INIT_LIST_HEAD(&mrioc->fwevt_list);
INIT_LIST_HEAD(&mrioc->tgtdev_list);
INIT_LIST_HEAD(&mrioc->delayed_rmhs_list);
mutex_init(&mrioc->reset_mutex);
mpi3mr_init_drv_cmd(&mrioc->init_cmds, MPI3MR_HOSTTAG_INITCMDS);
mpi3mr_init_drv_cmd(&mrioc->host_tm_cmds, MPI3MR_HOSTTAG_BLK_TMS);
for (i = 0; i < MPI3MR_NUM_DEVRMCMD; i++)
mpi3mr_init_drv_cmd(&mrioc->dev_rmhs_cmds[i],
MPI3MR_HOSTTAG_DEVRMCMD_MIN + i);
if (pdev->revision)
mrioc->enable_segqueue = true;
init_waitqueue_head(&mrioc->reset_waitq);
mrioc->logging_level = logging_level;
mrioc->shost = shost;
mrioc->pdev = pdev;
/* init shost parameters */
shost->max_cmd_len = MPI3MR_MAX_CDB_LENGTH;
shost->max_lun = -1;
shost->unique_id = mrioc->id;
shost->max_channel = 1;
shost->max_id = 0xFFFFFFFF;
snprintf(mrioc->fwevt_worker_name, sizeof(mrioc->fwevt_worker_name),
"%s%d_fwevt_wrkr", mrioc->driver_name, mrioc->id);
mrioc->fwevt_worker_thread = alloc_ordered_workqueue(
mrioc->fwevt_worker_name, WQ_MEM_RECLAIM);
if (!mrioc->fwevt_worker_thread) {
ioc_err(mrioc, "failure at %s:%d/%s()!\n",
__FILE__, __LINE__, __func__);
retval = -ENODEV;
goto out_fwevtthread_failed;
}
mrioc->is_driver_loading = 1;
if (mpi3mr_init_ioc(mrioc, 0)) {
ioc_err(mrioc, "failure at %s:%d/%s()!\n",
__FILE__, __LINE__, __func__);
retval = -ENODEV;
goto out_iocinit_failed;
}
shost->nr_hw_queues = mrioc->num_op_reply_q;
shost->can_queue = mrioc->max_host_ios;
shost->sg_tablesize = MPI3MR_SG_DEPTH;
shost->max_id = mrioc->facts.max_perids;
retval = scsi_add_host(shost, &pdev->dev);
if (retval) {
ioc_err(mrioc, "failure at %s:%d/%s()!\n",
__FILE__, __LINE__, __func__);
goto addhost_failed;
}
scsi_scan_host(shost);
return retval;
addhost_failed:
mpi3mr_cleanup_ioc(mrioc, 0);
out_iocinit_failed:
destroy_workqueue(mrioc->fwevt_worker_thread);
out_fwevtthread_failed:
spin_lock(&mrioc_list_lock);
list_del(&mrioc->list);
spin_unlock(&mrioc_list_lock);
scsi_host_put(shost);
shost_failed:
return retval;
}
/**
* mpi3mr_remove - PCI remove callback
* @pdev: PCI device instance
*
* Free up all memory and resources associated with the
* controllerand target devices, unregister the shost.
*
* Return: Nothing.
*/
static void mpi3mr_remove(struct pci_dev *pdev)
{
struct Scsi_Host *shost = pci_get_drvdata(pdev);
struct mpi3mr_ioc *mrioc;
struct workqueue_struct *wq;
unsigned long flags;
struct mpi3mr_tgt_dev *tgtdev, *tgtdev_next;
mrioc = shost_priv(shost);
while (mrioc->reset_in_progress || mrioc->is_driver_loading)
ssleep(1);
mrioc->stop_drv_processing = 1;
mpi3mr_cleanup_fwevt_list(mrioc);
spin_lock_irqsave(&mrioc->fwevt_lock, flags);
wq = mrioc->fwevt_worker_thread;
mrioc->fwevt_worker_thread = NULL;
spin_unlock_irqrestore(&mrioc->fwevt_lock, flags);
if (wq)
destroy_workqueue(wq);
scsi_remove_host(shost);
list_for_each_entry_safe(tgtdev, tgtdev_next, &mrioc->tgtdev_list,
list) {
mpi3mr_remove_tgtdev_from_host(mrioc, tgtdev);
mpi3mr_tgtdev_del_from_list(mrioc, tgtdev);
mpi3mr_tgtdev_put(tgtdev);
}
mpi3mr_cleanup_ioc(mrioc, 0);
spin_lock(&mrioc_list_lock);
list_del(&mrioc->list);
spin_unlock(&mrioc_list_lock);
scsi_host_put(shost);
}
/**
* mpi3mr_shutdown - PCI shutdown callback
* @pdev: PCI device instance
*
* Free up all memory and resources associated with the
* controller
*
* Return: Nothing.
*/
static void mpi3mr_shutdown(struct pci_dev *pdev)
{
struct Scsi_Host *shost = pci_get_drvdata(pdev);
struct mpi3mr_ioc *mrioc;
struct workqueue_struct *wq;
unsigned long flags;
if (!shost)
return;
mrioc = shost_priv(shost);
while (mrioc->reset_in_progress || mrioc->is_driver_loading)
ssleep(1);
mrioc->stop_drv_processing = 1;
mpi3mr_cleanup_fwevt_list(mrioc);
spin_lock_irqsave(&mrioc->fwevt_lock, flags);
wq = mrioc->fwevt_worker_thread;
mrioc->fwevt_worker_thread = NULL;
spin_unlock_irqrestore(&mrioc->fwevt_lock, flags);
if (wq)
destroy_workqueue(wq);
mpi3mr_cleanup_ioc(mrioc, 0);
}
#ifdef CONFIG_PM
/**
* mpi3mr_suspend - PCI power management suspend callback
* @pdev: PCI device instance
* @state: New power state
*
* Change the power state to the given value and cleanup the IOC
* by issuing MUR and shutdown notification
*
* Return: 0 always.
*/
static int mpi3mr_suspend(struct pci_dev *pdev, pm_message_t state)
{
struct Scsi_Host *shost = pci_get_drvdata(pdev);
struct mpi3mr_ioc *mrioc;
pci_power_t device_state;
if (!shost)
return 0;
mrioc = shost_priv(shost);
while (mrioc->reset_in_progress || mrioc->is_driver_loading)
ssleep(1);
mrioc->stop_drv_processing = 1;
mpi3mr_cleanup_fwevt_list(mrioc);
scsi_block_requests(shost);
mpi3mr_stop_watchdog(mrioc);
mpi3mr_cleanup_ioc(mrioc, 1);
device_state = pci_choose_state(pdev, state);
ioc_info(mrioc, "pdev=0x%p, slot=%s, entering operating state [D%d]\n",
pdev, pci_name(pdev), device_state);
pci_save_state(pdev);
pci_set_power_state(pdev, device_state);
mpi3mr_cleanup_resources(mrioc);
return 0;
}
/**
* mpi3mr_resume - PCI power management resume callback
* @pdev: PCI device instance
*
* Restore the power state to D0 and reinitialize the controller
* and resume I/O operations to the target devices
*
* Return: 0 on success, non-zero on failure
*/
static int mpi3mr_resume(struct pci_dev *pdev)
{
struct Scsi_Host *shost = pci_get_drvdata(pdev);
struct mpi3mr_ioc *mrioc;
pci_power_t device_state = pdev->current_state;
int r;
mrioc = shost_priv(shost);
ioc_info(mrioc, "pdev=0x%p, slot=%s, previous operating state [D%d]\n",
pdev, pci_name(pdev), device_state);
pci_set_power_state(pdev, PCI_D0);
pci_enable_wake(pdev, PCI_D0, 0);
pci_restore_state(pdev);
mrioc->pdev = pdev;
mrioc->cpu_count = num_online_cpus();
r = mpi3mr_setup_resources(mrioc);
if (r) {
ioc_info(mrioc, "%s: Setup resources failed[%d]\n",
__func__, r);
return r;
}
mrioc->stop_drv_processing = 0;
mpi3mr_init_ioc(mrioc, 1);
scsi_unblock_requests(shost);
mpi3mr_start_watchdog(mrioc);
return 0;
}
#endif
static const struct pci_device_id mpi3mr_pci_id_table[] = {
{
PCI_DEVICE_SUB(PCI_VENDOR_ID_LSI_LOGIC, 0x00A5,
PCI_ANY_ID, PCI_ANY_ID)
},
{ 0 }
};
MODULE_DEVICE_TABLE(pci, mpi3mr_pci_id_table);
static struct pci_driver mpi3mr_pci_driver = {
.name = MPI3MR_DRIVER_NAME,
.id_table = mpi3mr_pci_id_table,
.probe = mpi3mr_probe,
.remove = mpi3mr_remove,
.shutdown = mpi3mr_shutdown,
#ifdef CONFIG_PM
.suspend = mpi3mr_suspend,
.resume = mpi3mr_resume,
#endif
};
static int __init mpi3mr_init(void)
{
int ret_val;
pr_info("Loading %s version %s\n", MPI3MR_DRIVER_NAME,
MPI3MR_DRIVER_VERSION);
ret_val = pci_register_driver(&mpi3mr_pci_driver);
return ret_val;
}
static void __exit mpi3mr_exit(void)
{
if (warn_non_secure_ctlr)
pr_warn(
"Unloading %s version %s while managing a non secure controller\n",
MPI3MR_DRIVER_NAME, MPI3MR_DRIVER_VERSION);
else
pr_info("Unloading %s version %s\n", MPI3MR_DRIVER_NAME,
MPI3MR_DRIVER_VERSION);
pci_unregister_driver(&mpi3mr_pci_driver);
}
module_init(mpi3mr_init);
module_exit(mpi3mr_exit);
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