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linux-zen-server/drivers/scsi/mpi3mr/mpi3mr_os.c

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Initial commit
2023-08-30 17:53:23 +02:00
// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Driver for Broadcom MPI3 Storage Controllers
*
* Copyright (C) 2017-2022 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;
atomic64_t event_counter;
MODULE_AUTHOR(MPI3MR_DRIVER_AUTHOR);
MODULE_DESCRIPTION(MPI3MR_DRIVER_DESC);
MODULE_LICENSE(MPI3MR_DRIVER_LICENSE);
MODULE_VERSION(MPI3MR_DRIVER_VERSION);
/* Module parameters*/
int prot_mask = -1;
module_param(prot_mask, int, 0);
MODULE_PARM_DESC(prot_mask, "Host protection capabilities mask, def=0x07");
static int prot_guard_mask = 3;
module_param(prot_guard_mask, int, 0);
MODULE_PARM_DESC(prot_guard_mask, " Host protection guard mask, def=3");
static int logging_level;
module_param(logging_level, int, 0);
MODULE_PARM_DESC(logging_level,
" bits for enabling additional logging info (default=0)");
/* Forward declarations*/
static void mpi3mr_send_event_ack(struct mpi3mr_ioc *mrioc, u8 event,
struct mpi3mr_drv_cmd *cmdparam, u32 event_ctx);
#define MPI3MR_DRIVER_EVENT_TG_QD_REDUCTION (0xFFFF)
#define MPI3_EVENT_WAIT_FOR_DEVICES_TO_REFRESH (0xFFFE)
/**
* 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(scsi_cmd_to_rq(scmd));
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->meta_chain_idx = -1;
priv->chain_idx = -1;
priv->meta_sg_valid = 0;
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;
priv->meta_sg_valid = 0;
if (priv->chain_idx >= 0) {
clear_bit(priv->chain_idx, mrioc->chain_bitmap);
priv->chain_idx = -1;
}
if (priv->meta_chain_idx >= 0) {
clear_bit(priv->meta_chain_idx, mrioc->chain_bitmap);
priv->meta_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_cancel_work - cancel firmware event
* @fwevt: fwevt object which needs to be canceled
*
* Return: Nothing.
*/
static void mpi3mr_cancel_work(struct mpi3mr_fwevt *fwevt)
{
/*
* Wait on the fwevt to complete. If this returns 1, then
* the event was never executed.
*
* 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_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)))
mpi3mr_cancel_work(fwevt);
if (mrioc->current_event) {
fwevt = mrioc->current_event;
/*
* Don't call cancel_work_sync() API for the
* fwevt work if the controller reset is
* get called as part of processing the
* same fwevt work (or) when worker thread is
* waiting for device add/remove APIs to complete.
* Otherwise we will see deadlock.
*/
if (current_work() == &fwevt->work || fwevt->pending_at_sml) {
fwevt->discard = 1;
return;
}
mpi3mr_cancel_work(fwevt);
}
}
/**
* mpi3mr_queue_qd_reduction_event - Queue TG QD reduction event
* @mrioc: Adapter instance reference
* @tg: Throttle group information pointer
*
* Accessor to queue on synthetically generated driver event to
* the event worker thread, the driver event will be used to
* reduce the QD of all VDs in the TG from the worker thread.
*
* Return: None.
*/
static void mpi3mr_queue_qd_reduction_event(struct mpi3mr_ioc *mrioc,
struct mpi3mr_throttle_group_info *tg)
{
struct mpi3mr_fwevt *fwevt;
u16 sz = sizeof(struct mpi3mr_throttle_group_info *);
/*
* If the QD reduction event is already queued due to throttle and if
* the QD is not restored through device info change event
* then dont queue further reduction events
*/
if (tg->fw_qd != tg->modified_qd)
return;
fwevt = mpi3mr_alloc_fwevt(sz);
if (!fwevt) {
ioc_warn(mrioc, "failed to queue TG QD reduction event\n");
return;
}
*(struct mpi3mr_throttle_group_info **)fwevt->event_data = tg;
fwevt->mrioc = mrioc;
fwevt->event_id = MPI3MR_DRIVER_EVENT_TG_QD_REDUCTION;
fwevt->send_ack = 0;
fwevt->process_evt = 1;
fwevt->evt_ctx = 0;
fwevt->event_data_size = sz;
tg->modified_qd = max_t(u16, (tg->fw_qd * tg->qd_reduction) / 10, 8);
dprint_event_bh(mrioc, "qd reduction event queued for tg_id(%d)\n",
tg->id);
mpi3mr_fwevt_add_to_list(mrioc, 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;
tgt_priv->io_throttle_enabled = 0;
tgt_priv->io_divert = 0;
tgt_priv->throttle_group = NULL;
if (tgtdev->host_exposed)
atomic_set(&tgt_priv->block_io, 1);
}
}
}
/**
* mpi3mr_print_scmd - print individual SCSI command
* @rq: Block request
* @data: Adapter instance reference
*
* Print the SCSI command details if it is in LLD scope.
*
* Return: true always.
*/
static bool mpi3mr_print_scmd(struct request *rq, void *data)
{
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
*
* 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)
{
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;
if (priv->meta_sg_valid)
dma_unmap_sg(&mrioc->pdev->dev, scsi_prot_sglist(scmd),
scsi_prot_sg_count(scmd), scmd->sc_data_direction);
mpi3mr_clear_scmd_priv(mrioc, scmd);
scsi_dma_unmap(scmd);
scmd->result = DID_RESET << 16;
scsi_print_command(scmd);
scsi_done(scmd);
mrioc->flush_io_count++;
}
out:
return(true);
}
/**
* mpi3mr_count_dev_pending - Count commands pending for a lun
* @rq: Block request
* @data: SCSI device reference
*
* This is an iterator function called for each SCSI command in
* a host and if the command is pending in the LLD for the
* specific device(lun) then device specific pending I/O counter
* is updated in the device structure.
*
* Return: true always.
*/
static bool mpi3mr_count_dev_pending(struct request *rq, void *data)
{
struct scsi_device *sdev = (struct scsi_device *)data;
struct mpi3mr_sdev_priv_data *sdev_priv_data = sdev->hostdata;
struct scsi_cmnd *scmd = blk_mq_rq_to_pdu(rq);
struct scmd_priv *priv;
if (scmd) {
priv = scsi_cmd_priv(scmd);
if (!priv->in_lld_scope)
goto out;
if (scmd->device == sdev)
sdev_priv_data->pend_count++;
}
out:
return true;
}
/**
* mpi3mr_count_tgt_pending - Count commands pending for target
* @rq: Block request
* @data: SCSI target reference
*
* This is an iterator function called for each SCSI command in
* a host and if the command is pending in the LLD for the
* specific target then target specific pending I/O counter is
* updated in the target structure.
*
* Return: true always.
*/
static bool mpi3mr_count_tgt_pending(struct request *rq, void *data)
{
struct scsi_target *starget = (struct scsi_target *)data;
struct mpi3mr_stgt_priv_data *stgt_priv_data = starget->hostdata;
struct scsi_cmnd *scmd = blk_mq_rq_to_pdu(rq);
struct scmd_priv *priv;
if (scmd) {
priv = scsi_cmd_priv(scmd);
if (!priv->in_lld_scope)
goto out;
if (scmd->device && (scsi_target(scmd->device) == starget))
stgt_priv_data->pend_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_flush_cmds_for_unrecovered_controller - Flush all pending cmds
* @mrioc: Adapter instance reference
*
* This function waits for currently running IO poll threads to
* exit and then flushes all host I/Os and any internal pending
* cmds. This is executed after controller is marked as
* unrecoverable.
*
* Return: Nothing.
*/
void mpi3mr_flush_cmds_for_unrecovered_controller(struct mpi3mr_ioc *mrioc)
{
struct Scsi_Host *shost = mrioc->shost;
int i;
if (!mrioc->unrecoverable)
return;
if (mrioc->op_reply_qinfo) {
for (i = 0; i < mrioc->num_queues; i++) {
while (atomic_read(&mrioc->op_reply_qinfo[i].in_use))
udelay(500);
atomic_set(&mrioc->op_reply_qinfo[i].pend_ios, 0);
}
}
mrioc->flush_io_count = 0;
blk_mq_tagset_busy_iter(&shost->tag_set,
mpi3mr_flush_scmd, (void *)mrioc);
mpi3mr_flush_delayed_cmd_lists(mrioc);
mpi3mr_flush_drv_cmds(mrioc);
}
/**
* 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.
*/
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_set_io_divert_for_all_vd_in_tg -set divert for TG VDs
* @mrioc: Adapter instance reference
* @tg: Throttle group information pointer
* @divert_value: 1 or 0
*
* Accessor to set io_divert flag for each device associated
* with the given throttle group with the given value.
*
* Return: None.
*/
static void mpi3mr_set_io_divert_for_all_vd_in_tg(struct mpi3mr_ioc *mrioc,
struct mpi3mr_throttle_group_info *tg, u8 divert_value)
{
unsigned long flags;
struct mpi3mr_tgt_dev *tgtdev;
struct mpi3mr_stgt_priv_data *tgt_priv;
spin_lock_irqsave(&mrioc->tgtdev_lock, flags);
list_for_each_entry(tgtdev, &mrioc->tgtdev_list, list) {
if (tgtdev->starget && tgtdev->starget->hostdata) {
tgt_priv = tgtdev->starget->hostdata;
if (tgt_priv->throttle_group == tg)
tgt_priv->io_divert = divert_value;
}
}
spin_unlock_irqrestore(&mrioc->tgtdev_lock, flags);
}
/**
* mpi3mr_print_device_event_notice - print notice related to post processing of
* device event after controller reset.
*
* @mrioc: Adapter instance reference
* @device_add: true for device add event and false for device removal event
*
* Return: None.
*/
void mpi3mr_print_device_event_notice(struct mpi3mr_ioc *mrioc,
bool device_add)
{
ioc_notice(mrioc, "Device %s was in progress before the reset and\n",
(device_add ? "addition" : "removal"));
ioc_notice(mrioc, "completed after reset, verify whether the exposed devices\n");
ioc_notice(mrioc, "are matched with attached devices for correctness\n");
}
/**
* 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.
*/
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;
atomic_set(&tgt_priv->block_io, 0);
tgt_priv->dev_handle = MPI3MR_INVALID_DEV_HANDLE;
}
if (!mrioc->sas_transport_enabled || (tgtdev->dev_type !=
MPI3_DEVICE_DEVFORM_SAS_SATA) || tgtdev->non_stl) {
if (tgtdev->starget) {
if (mrioc->current_event)
mrioc->current_event->pending_at_sml = 1;
scsi_remove_target(&tgtdev->starget->dev);
tgtdev->host_exposed = 0;
if (mrioc->current_event) {
mrioc->current_event->pending_at_sml = 0;
if (mrioc->current_event->discard) {
mpi3mr_print_device_event_notice(mrioc,
false);
return;
}
}
}
} else
mpi3mr_remove_tgtdev_from_sas_transport(mrioc, tgtdev);
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;
if (mrioc->reset_in_progress)
return -1;
tgtdev = mpi3mr_get_tgtdev_by_perst_id(mrioc, perst_id);
if (!tgtdev) {
retval = -1;
goto out;
}
if (tgtdev->is_hidden || tgtdev->host_exposed) {
retval = -1;
goto out;
}
if (!mrioc->sas_transport_enabled || (tgtdev->dev_type !=
MPI3_DEVICE_DEVFORM_SAS_SATA) || tgtdev->non_stl){
tgtdev->host_exposed = 1;
if (mrioc->current_event)
mrioc->current_event->pending_at_sml = 1;
scsi_scan_target(&mrioc->shost->shost_gendev,
mrioc->scsi_device_channel, tgtdev->perst_id,
SCAN_WILD_CARD, SCSI_SCAN_INITIAL);
if (!tgtdev->starget)
tgtdev->host_exposed = 0;
if (mrioc->current_event) {
mrioc->current_event->pending_at_sml = 0;
if (mrioc->current_event->discard) {
mpi3mr_print_device_event_notice(mrioc, true);
goto out;
}
}
} else
mpi3mr_report_tgtdev_to_sas_transport(mrioc, tgtdev);
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);
sdev->max_queue_depth = sdev->queue_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*/
if ((tgtdev->dev_spec.pcie_inf.dev_info &
MPI3_DEVICE0_PCIE_DEVICE_INFO_TYPE_MASK) ==
MPI3_DEVICE0_PCIE_DEVICE_INFO_TYPE_NVME_DEVICE) {
blk_queue_max_hw_sectors(sdev->request_queue,
tgtdev->dev_spec.pcie_inf.mdts / 512);
if (tgtdev->dev_spec.pcie_inf.pgsz == 0)
blk_queue_virt_boundary(sdev->request_queue,
((1 << MPI3MR_DEFAULT_PGSZEXP) - 1));
else
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) {
dprint_reset(mrioc, "removing target device with perst_id(%d)\n",
tgtdev->perst_id);
if (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
* @is_added: Flag to indicate the device is just added
*
* 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,
bool is_added)
{
u16 flags = 0;
struct mpi3mr_stgt_priv_data *scsi_tgt_priv_data = NULL;
struct mpi3mr_enclosure_node *enclosure_dev = NULL;
u8 prot_mask = 0;
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->io_unit_port = dev_pg0->io_unit_port;
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);
tgtdev->devpg0_flag = le16_to_cpu(dev_pg0->flags);
if (tgtdev->encl_handle)
enclosure_dev = mpi3mr_enclosure_find_by_handle(mrioc,
tgtdev->encl_handle);
if (enclosure_dev)
tgtdev->enclosure_logical_id = le64_to_cpu(
enclosure_dev->pg0.enclosure_logical_id);
flags = tgtdev->devpg0_flag;
tgtdev->is_hidden = (flags & MPI3_DEVICE0_FLAGS_HIDDEN);
if (is_added == true)
tgtdev->io_throttle_enabled =
(flags & MPI3_DEVICE0_FLAGS_IO_THROTTLING_REQUIRED) ? 1 : 0;
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;
scsi_tgt_priv_data->io_throttle_enabled =
tgtdev->io_throttle_enabled;
if (is_added == true)
atomic_set(&scsi_tgt_priv_data->block_io, 0);
}
switch (dev_pg0->access_status) {
case MPI3_DEVICE0_ASTATUS_NO_ERRORS:
case MPI3_DEVICE0_ASTATUS_PREPARE:
case MPI3_DEVICE0_ASTATUS_NEEDS_INITIALIZATION:
case MPI3_DEVICE0_ASTATUS_DEVICE_MISSING_DELAY:
break;
default:
tgtdev->is_hidden = 1;
break;
}
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);
tgtdev->dev_spec.sas_sata_inf.phy_id = sasinf->phy_num;
tgtdev->dev_spec.sas_sata_inf.attached_phy_id =
sasinf->attached_phy_identifier;
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;
if (((tgtdev->devpg0_flag &
MPI3_DEVICE0_FLAGS_ATT_METHOD_DIR_ATTACHED)
&& (tgtdev->devpg0_flag &
MPI3_DEVICE0_FLAGS_ATT_METHOD_VIRTUAL)) ||
(tgtdev->parent_handle == 0xFFFF))
tgtdev->non_stl = 1;
if (tgtdev->dev_spec.sas_sata_inf.hba_port)
tgtdev->dev_spec.sas_sata_inf.hba_port->port_id =
dev_pg0->io_unit_port;
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.dev_info = dev_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 =
max_t(u8, pcieinf->controller_reset_to,
MPI3MR_INTADMCMD_TIMEOUT);
tgtdev->dev_spec.pcie_inf.abort_to =
max_t(u8, pcieinf->nvme_abort_to,
MPI3MR_INTADMCMD_TIMEOUT);
}
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) &&
((dev_info & MPI3_DEVICE0_PCIE_DEVICE_INFO_TYPE_MASK) !=
MPI3_DEVICE0_PCIE_DEVICE_INFO_TYPE_SCSI_DEVICE))
tgtdev->is_hidden = 1;
tgtdev->non_stl = 1;
if (!mrioc->shost)
break;
prot_mask = scsi_host_get_prot(mrioc->shost);
if (prot_mask & SHOST_DIX_TYPE0_PROTECTION) {
scsi_host_set_prot(mrioc->shost, prot_mask & 0x77);
ioc_info(mrioc,
"%s : Disabling DIX0 prot capability\n", __func__);
ioc_info(mrioc,
"because HBA does not support DIX0 operation on NVME drives\n");
}
break;
}
case MPI3_DEVICE_DEVFORM_VD:
{
struct mpi3_device0_vd_format *vdinf =
&dev_pg0->device_specific.vd_format;
struct mpi3mr_throttle_group_info *tg = NULL;
u16 vdinf_io_throttle_group =
le16_to_cpu(vdinf->io_throttle_group);
tgtdev->dev_spec.vd_inf.state = vdinf->vd_state;
if (vdinf->vd_state == MPI3_DEVICE0_VD_STATE_OFFLINE)
tgtdev->is_hidden = 1;
tgtdev->non_stl = 1;
tgtdev->dev_spec.vd_inf.tg_id = vdinf_io_throttle_group;
tgtdev->dev_spec.vd_inf.tg_high =
le16_to_cpu(vdinf->io_throttle_group_high) * 2048;
tgtdev->dev_spec.vd_inf.tg_low =
le16_to_cpu(vdinf->io_throttle_group_low) * 2048;
if (vdinf_io_throttle_group < mrioc->num_io_throttle_group) {
tg = mrioc->throttle_groups + vdinf_io_throttle_group;
tg->id = vdinf_io_throttle_group;
tg->high = tgtdev->dev_spec.vd_inf.tg_high;
tg->low = tgtdev->dev_spec.vd_inf.tg_low;
tg->qd_reduction =
tgtdev->dev_spec.vd_inf.tg_qd_reduction;
if (is_added == true)
tg->fw_qd = tgtdev->q_depth;
tg->modified_qd = tgtdev->q_depth;
}
tgtdev->dev_spec.vd_inf.tg = tg;
if (scsi_tgt_priv_data)
scsi_tgt_priv_data->throttle_group = tg;
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, false);
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_free_enclosure_list - release enclosures
* @mrioc: Adapter instance reference
*
* Free memory allocated during encloure add.
*
* Return nothing.
*/
void mpi3mr_free_enclosure_list(struct mpi3mr_ioc *mrioc)
{
struct mpi3mr_enclosure_node *enclosure_dev, *enclosure_dev_next;
list_for_each_entry_safe(enclosure_dev,
enclosure_dev_next, &mrioc->enclosure_list, list) {
list_del(&enclosure_dev->list);
kfree(enclosure_dev);
}
}
/**
* mpi3mr_enclosure_find_by_handle - enclosure search by handle
* @mrioc: Adapter instance reference
* @handle: Firmware device handle of the enclosure
*
* This searches for enclosure device based on handle, then returns the
* enclosure object.
*
* Return: Enclosure object reference or NULL
*/
struct mpi3mr_enclosure_node *mpi3mr_enclosure_find_by_handle(
struct mpi3mr_ioc *mrioc, u16 handle)
{
struct mpi3mr_enclosure_node *enclosure_dev, *r = NULL;
list_for_each_entry(enclosure_dev, &mrioc->enclosure_list, list) {
if (le16_to_cpu(enclosure_dev->pg0.enclosure_handle) != handle)
continue;
r = enclosure_dev;
goto out;
}
out:
return r;
}
/**
* mpi3mr_encldev_add_chg_evt_debug - debug for enclosure event
* @mrioc: Adapter instance reference
* @encl_pg0: Enclosure page 0.
* @is_added: Added event or not
*
* Return nothing.
*/
static void mpi3mr_encldev_add_chg_evt_debug(struct mpi3mr_ioc *mrioc,
struct mpi3_enclosure_page0 *encl_pg0, u8 is_added)
{
char *reason_str = NULL;
if (!(mrioc->logging_level & MPI3_DEBUG_EVENT_WORK_TASK))
return;
if (is_added)
reason_str = "enclosure added";
else
reason_str = "enclosure dev status changed";
ioc_info(mrioc,
"%s: handle(0x%04x), enclosure logical id(0x%016llx)\n",
reason_str, le16_to_cpu(encl_pg0->enclosure_handle),
(unsigned long long)le64_to_cpu(encl_pg0->enclosure_logical_id));
ioc_info(mrioc,
"number of slots(%d), port(%d), flags(0x%04x), present(%d)\n",
le16_to_cpu(encl_pg0->num_slots), encl_pg0->io_unit_port,
le16_to_cpu(encl_pg0->flags),
((le16_to_cpu(encl_pg0->flags) &
MPI3_ENCLS0_FLAGS_ENCL_DEV_PRESENT_MASK) >> 4));
}
/**
* mpi3mr_encldev_add_chg_evt_bh - Enclosure evt bottomhalf
* @mrioc: Adapter instance reference
* @fwevt: Firmware event reference
*
* Prints information about the Enclosure device status or
* Enclosure add events if logging is enabled and add or remove
* the enclosure from the controller's internal list of
* enclosures.
*
* Return: Nothing.
*/
static void mpi3mr_encldev_add_chg_evt_bh(struct mpi3mr_ioc *mrioc,
struct mpi3mr_fwevt *fwevt)
{
struct mpi3mr_enclosure_node *enclosure_dev = NULL;
struct mpi3_enclosure_page0 *encl_pg0;
u16 encl_handle;
u8 added, present;
encl_pg0 = (struct mpi3_enclosure_page0 *) fwevt->event_data;
added = (fwevt->event_id == MPI3_EVENT_ENCL_DEVICE_ADDED) ? 1 : 0;
mpi3mr_encldev_add_chg_evt_debug(mrioc, encl_pg0, added);
encl_handle = le16_to_cpu(encl_pg0->enclosure_handle);
present = ((le16_to_cpu(encl_pg0->flags) &
MPI3_ENCLS0_FLAGS_ENCL_DEV_PRESENT_MASK) >> 4);
if (encl_handle)
enclosure_dev = mpi3mr_enclosure_find_by_handle(mrioc,
encl_handle);
if (!enclosure_dev && present) {
enclosure_dev =
kzalloc(sizeof(struct mpi3mr_enclosure_node),
GFP_KERNEL);
if (!enclosure_dev)
return;
list_add_tail(&enclosure_dev->list,
&mrioc->enclosure_list);
}
if (enclosure_dev) {
if (!present) {
list_del(&enclosure_dev->list);
kfree(enclosure_dev);
} else
memcpy(&enclosure_dev->pg0, encl_pg0,
sizeof(enclosure_dev->pg0));
}
}
/**
* mpi3mr_sastopochg_evt_debug - SASTopoChange details
* @mrioc: Adapter instance reference
* @event_data: SAS topology change list event data
*
* Prints information about the SAS topology change event.
*
* Return: Nothing.
*/
static void
mpi3mr_sastopochg_evt_debug(struct mpi3mr_ioc *mrioc,
struct mpi3_event_data_sas_topology_change_list *event_data)
{
int i;
u16 handle;
u8 reason_code, phy_number;
char *status_str = NULL;
u8 link_rate, prev_link_rate;
switch (event_data->exp_status) {
case MPI3_EVENT_SAS_TOPO_ES_NOT_RESPONDING:
status_str = "remove";
break;
case MPI3_EVENT_SAS_TOPO_ES_RESPONDING:
status_str = "responding";
break;
case MPI3_EVENT_SAS_TOPO_ES_DELAY_NOT_RESPONDING:
status_str = "remove delay";
break;
case MPI3_EVENT_SAS_TOPO_ES_NO_EXPANDER:
status_str = "direct attached";
break;
default:
status_str = "unknown status";
break;
}
ioc_info(mrioc, "%s :sas topology change: (%s)\n",
__func__, status_str);
ioc_info(mrioc,
"%s :\texpander_handle(0x%04x), port(%d), enclosure_handle(0x%04x) start_phy(%02d), num_entries(%d)\n",
__func__, le16_to_cpu(event_data->expander_dev_handle),
event_data->io_unit_port,
le16_to_cpu(event_data->enclosure_handle),
event_data->start_phy_num, event_data->num_entries);
for (i = 0; i < event_data->num_entries; i++) {
handle = le16_to_cpu(event_data->phy_entry[i].attached_dev_handle);
if (!handle)
continue;
phy_number = event_data->start_phy_num + i;
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:
status_str = "target remove";
break;
case MPI3_EVENT_SAS_TOPO_PHY_RC_DELAY_NOT_RESPONDING:
status_str = "delay target remove";
break;
case MPI3_EVENT_SAS_TOPO_PHY_RC_PHY_CHANGED:
status_str = "link status change";
break;
case MPI3_EVENT_SAS_TOPO_PHY_RC_NO_CHANGE:
status_str = "link status no change";
break;
case MPI3_EVENT_SAS_TOPO_PHY_RC_RESPONDING:
status_str = "target responding";
break;
default:
status_str = "unknown";
break;
}
link_rate = event_data->phy_entry[i].link_rate >> 4;
prev_link_rate = event_data->phy_entry[i].link_rate & 0xF;
ioc_info(mrioc,
"%s :\tphy(%02d), attached_handle(0x%04x): %s: link rate: new(0x%02x), old(0x%02x)\n",
__func__, phy_number, handle, status_str, link_rate,
prev_link_rate);
}
}
/**
* 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;
u64 exp_sas_address = 0, parent_sas_address = 0;
struct mpi3mr_hba_port *hba_port = NULL;
struct mpi3mr_tgt_dev *tgtdev = NULL;
struct mpi3mr_sas_node *sas_expander = NULL;
unsigned long flags;
u8 link_rate, prev_link_rate, parent_phy_number;
mpi3mr_sastopochg_evt_debug(mrioc, event_data);
if (mrioc->sas_transport_enabled) {
hba_port = mpi3mr_get_hba_port_by_id(mrioc,
event_data->io_unit_port);
if (le16_to_cpu(event_data->expander_dev_handle)) {
spin_lock_irqsave(&mrioc->sas_node_lock, flags);
sas_expander = __mpi3mr_expander_find_by_handle(mrioc,
le16_to_cpu(event_data->expander_dev_handle));
if (sas_expander) {
exp_sas_address = sas_expander->sas_address;
hba_port = sas_expander->hba_port;
}
spin_unlock_irqrestore(&mrioc->sas_node_lock, flags);
parent_sas_address = exp_sas_address;
} else
parent_sas_address = mrioc->sas_hba.sas_address;
}
for (i = 0; i < event_data->num_entries; i++) {
if (fwevt->discard)
return;
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;
case MPI3_EVENT_SAS_TOPO_PHY_RC_RESPONDING:
case MPI3_EVENT_SAS_TOPO_PHY_RC_PHY_CHANGED:
case MPI3_EVENT_SAS_TOPO_PHY_RC_NO_CHANGE:
{
if (!mrioc->sas_transport_enabled || tgtdev->non_stl
|| tgtdev->is_hidden)
break;
link_rate = event_data->phy_entry[i].link_rate >> 4;
prev_link_rate = event_data->phy_entry[i].link_rate & 0xF;
if (link_rate == prev_link_rate)
break;
if (!parent_sas_address)
break;
parent_phy_number = event_data->start_phy_num + i;
mpi3mr_update_links(mrioc, parent_sas_address, handle,
parent_phy_number, link_rate, hba_port);
break;
}
default:
break;
}
if (tgtdev)
mpi3mr_tgtdev_put(tgtdev);
}
if (mrioc->sas_transport_enabled && (event_data->exp_status ==
MPI3_EVENT_SAS_TOPO_ES_NOT_RESPONDING)) {
if (sas_expander)
mpi3mr_expander_remove(mrioc, exp_sas_address,
hba_port);
}
}
/**
* mpi3mr_pcietopochg_evt_debug - PCIeTopoChange details
* @mrioc: Adapter instance reference
* @event_data: PCIe topology change list event data
*
* Prints information about the PCIe topology change event.
*
* Return: Nothing.
*/
static void
mpi3mr_pcietopochg_evt_debug(struct mpi3mr_ioc *mrioc,
struct mpi3_event_data_pcie_topology_change_list *event_data)
{
int i;
u16 handle;
u16 reason_code;
u8 port_number;
char *status_str = NULL;
u8 link_rate, prev_link_rate;
switch (event_data->switch_status) {
case MPI3_EVENT_PCIE_TOPO_SS_NOT_RESPONDING:
status_str = "remove";
break;
case MPI3_EVENT_PCIE_TOPO_SS_RESPONDING:
status_str = "responding";
break;
case MPI3_EVENT_PCIE_TOPO_SS_DELAY_NOT_RESPONDING:
status_str = "remove delay";
break;
case MPI3_EVENT_PCIE_TOPO_SS_NO_PCIE_SWITCH:
status_str = "direct attached";
break;
default:
status_str = "unknown status";
break;
}
ioc_info(mrioc, "%s :pcie topology change: (%s)\n",
__func__, status_str);
ioc_info(mrioc,
"%s :\tswitch_handle(0x%04x), enclosure_handle(0x%04x) start_port(%02d), num_entries(%d)\n",
__func__, le16_to_cpu(event_data->switch_dev_handle),
le16_to_cpu(event_data->enclosure_handle),
event_data->start_port_num, event_data->num_entries);
for (i = 0; i < event_data->num_entries; i++) {
handle =
le16_to_cpu(event_data->port_entry[i].attached_dev_handle);
if (!handle)
continue;
port_number = event_data->start_port_num + i;
reason_code = event_data->port_entry[i].port_status;
switch (reason_code) {
case MPI3_EVENT_PCIE_TOPO_PS_NOT_RESPONDING:
status_str = "target remove";
break;
case MPI3_EVENT_PCIE_TOPO_PS_DELAY_NOT_RESPONDING:
status_str = "delay target remove";
break;
case MPI3_EVENT_PCIE_TOPO_PS_PORT_CHANGED:
status_str = "link status change";
break;
case MPI3_EVENT_PCIE_TOPO_PS_NO_CHANGE:
status_str = "link status no change";
break;
case MPI3_EVENT_PCIE_TOPO_PS_RESPONDING:
status_str = "target responding";
break;
default:
status_str = "unknown";
break;
}
link_rate = event_data->port_entry[i].current_port_info &
MPI3_EVENT_PCIE_TOPO_PI_RATE_MASK;
prev_link_rate = event_data->port_entry[i].previous_port_info &
MPI3_EVENT_PCIE_TOPO_PI_RATE_MASK;
ioc_info(mrioc,
"%s :\tport(%02d), attached_handle(0x%04x): %s: link rate: new(0x%02x), old(0x%02x)\n",
__func__, port_number, handle, status_str, link_rate,
prev_link_rate);
}
}
/**
* 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;
mpi3mr_pcietopochg_evt_debug(mrioc, event_data);
for (i = 0; i < event_data->num_entries; i++) {
if (fwevt->discard)
return;
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_logdata_evt_bh - Log data event bottomhalf
* @mrioc: Adapter instance reference
* @fwevt: Firmware event reference
*
* Extracts the event data and calls application interfacing
* function to process the event further.
*
* Return: Nothing.
*/
static void mpi3mr_logdata_evt_bh(struct mpi3mr_ioc *mrioc,
struct mpi3mr_fwevt *fwevt)
{
mpi3mr_app_save_logdata(mrioc, fwevt->event_data,
fwevt->event_data_size);
}
/**
* mpi3mr_update_sdev_qd - Update SCSI device queue depath
* @sdev: SCSI device reference
* @data: Queue depth reference
*
* This is an iterator function called for each SCSI device in a
* target to update the QD of each SCSI device.
*
* Return: Nothing.
*/
static void mpi3mr_update_sdev_qd(struct scsi_device *sdev, void *data)
{
u16 *q_depth = (u16 *)data;
scsi_change_queue_depth(sdev, (int)*q_depth);
sdev->max_queue_depth = sdev->queue_depth;
}
/**
* mpi3mr_set_qd_for_all_vd_in_tg -set QD for TG VDs
* @mrioc: Adapter instance reference
* @tg: Throttle group information pointer
*
* Accessor to reduce QD for each device associated with the
* given throttle group.
*
* Return: None.
*/
static void mpi3mr_set_qd_for_all_vd_in_tg(struct mpi3mr_ioc *mrioc,
struct mpi3mr_throttle_group_info *tg)
{
unsigned long flags;
struct mpi3mr_tgt_dev *tgtdev;
struct mpi3mr_stgt_priv_data *tgt_priv;
spin_lock_irqsave(&mrioc->tgtdev_lock, flags);
list_for_each_entry(tgtdev, &mrioc->tgtdev_list, list) {
if (tgtdev->starget && tgtdev->starget->hostdata) {
tgt_priv = tgtdev->starget->hostdata;
if (tgt_priv->throttle_group == tg) {
dprint_event_bh(mrioc,
"updating qd due to throttling for persist_id(%d) original_qd(%d), reduced_qd (%d)\n",
tgt_priv->perst_id, tgtdev->q_depth,
tg->modified_qd);
starget_for_each_device(tgtdev->starget,
(void *)&tg->modified_qd,
mpi3mr_update_sdev_qd);
}
}
}
spin_unlock_irqrestore(&mrioc->tgtdev_lock, flags);
}
/**
* 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)
{
struct mpi3_device_page0 *dev_pg0 = NULL;
u16 perst_id, handle, dev_info;
struct mpi3_device0_sas_sata_format *sasinf = NULL;
mpi3mr_fwevt_del_from_list(mrioc, fwevt);
mrioc->current_event = fwevt;
if (mrioc->stop_drv_processing)
goto out;
if (mrioc->unrecoverable) {
dprint_event_bh(mrioc,
"ignoring event(0x%02x) in bottom half handler due to unrecoverable controller\n",
fwevt->event_id);
goto out;
}
if (!fwevt->process_evt)
goto evt_ack;
switch (fwevt->event_id) {
case MPI3_EVENT_DEVICE_ADDED:
{
dev_pg0 = (struct mpi3_device_page0 *)fwevt->event_data;
perst_id = le16_to_cpu(dev_pg0->persistent_id);
handle = le16_to_cpu(dev_pg0->dev_handle);
if (perst_id != MPI3_DEVICE0_PERSISTENTID_INVALID)
mpi3mr_report_tgtdev_to_host(mrioc, perst_id);
else if (mrioc->sas_transport_enabled &&
(dev_pg0->device_form == MPI3_DEVICE_DEVFORM_SAS_SATA)) {
sasinf = &dev_pg0->device_specific.sas_sata_format;
dev_info = le16_to_cpu(sasinf->device_info);
if (!mrioc->sas_hba.num_phys)
mpi3mr_sas_host_add(mrioc);
else
mpi3mr_sas_host_refresh(mrioc);
if (mpi3mr_is_expander_device(dev_info))
mpi3mr_expander_add(mrioc, handle);
}
break;
}
case MPI3_EVENT_DEVICE_INFO_CHANGED:
{
dev_pg0 = (struct mpi3_device_page0 *)fwevt->event_data;
perst_id = le16_to_cpu(dev_pg0->persistent_id);
if (perst_id != MPI3_DEVICE0_PERSISTENTID_INVALID)
mpi3mr_devinfochg_evt_bh(mrioc, dev_pg0);
break;
}
case MPI3_EVENT_DEVICE_STATUS_CHANGE:
{
mpi3mr_devstatuschg_evt_bh(mrioc, fwevt);
break;
}
case MPI3_EVENT_ENCL_DEVICE_ADDED:
case MPI3_EVENT_ENCL_DEVICE_STATUS_CHANGE:
{
mpi3mr_encldev_add_chg_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;
}
case MPI3_EVENT_LOG_DATA:
{
mpi3mr_logdata_evt_bh(mrioc, fwevt);
break;
}
case MPI3MR_DRIVER_EVENT_TG_QD_REDUCTION:
{
struct mpi3mr_throttle_group_info *tg;
tg = *(struct mpi3mr_throttle_group_info **)fwevt->event_data;
dprint_event_bh(mrioc,
"qd reduction event processed for tg_id(%d) reduction_needed(%d)\n",
tg->id, tg->need_qd_reduction);
if (tg->need_qd_reduction) {
mpi3mr_set_qd_for_all_vd_in_tg(mrioc, tg);
tg->need_qd_reduction = 0;
}
break;
}
case MPI3_EVENT_WAIT_FOR_DEVICES_TO_REFRESH:
{
while (mrioc->device_refresh_on)
msleep(500);
dprint_event_bh(mrioc,
"scan for non responding and newly added devices after soft reset started\n");
if (mrioc->sas_transport_enabled) {
mpi3mr_refresh_sas_ports(mrioc);
mpi3mr_refresh_expanders(mrioc);
}
mpi3mr_rfresh_tgtdevs(mrioc);
ioc_info(mrioc,
"scan for non responding and newly added devices after soft reset completed\n");
break;
}
default:
break;
}
evt_ack:
if (fwevt->send_ack)
mpi3mr_process_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);
if (perst_id == MPI3_DEVICE0_PERSISTENTID_INVALID)
return retval;
tgtdev = mpi3mr_get_tgtdev_by_perst_id(mrioc, perst_id);
if (tgtdev) {
mpi3mr_update_tgtdev(mrioc, tgtdev, dev_pg0, true);
mpi3mr_tgtdev_put(tgtdev);
} else {
tgtdev = mpi3mr_alloc_tgtdev();
if (!tgtdev)
return -ENOMEM;
mpi3mr_update_tgtdev(mrioc, tgtdev, dev_pg0, true);
mpi3mr_tgtdev_add_to_list(mrioc, tgtdev);
}
return retval;
}
/**
* mpi3mr_flush_delayed_cmd_lists - Flush pending commands
* @mrioc: Adapter instance reference
*
* Flush pending commands in the delayed lists due to a
* controller reset or driver removal as a cleanup.
*
* Return: Nothing
*/
void mpi3mr_flush_delayed_cmd_lists(struct mpi3mr_ioc *mrioc)
{
struct delayed_dev_rmhs_node *_rmhs_node;
struct delayed_evt_ack_node *_evtack_node;
dprint_reset(mrioc, "flushing delayed dev_remove_hs commands\n");
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);
}
dprint_reset(mrioc, "flushing delayed event ack commands\n");
while (!list_empty(&mrioc->delayed_evtack_cmds_list)) {
_evtack_node = list_entry(mrioc->delayed_evtack_cmds_list.next,
struct delayed_evt_ack_node, list);
list_del(&_evtack_node->list);
kfree(_evtack_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;
if (drv_cmd->state & MPI3MR_CMD_RESET)
goto clear_drv_cmd;
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;
}
clear_drv_cmd:
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_RESET)
goto clear_drv_cmd;
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 clear_drv_cmd;
}
return;
clear_drv_cmd:
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_complete_evt_ack - event ack request completion
* @mrioc: Adapter instance reference
* @drv_cmd: Internal command tracker
*
* This is the completion handler for non blocking event
* acknowledgment sent to the firmware and this will issue any
* pending event acknowledgment request.
*
* Return: Nothing
*/
static void mpi3mr_complete_evt_ack(struct mpi3mr_ioc *mrioc,
struct mpi3mr_drv_cmd *drv_cmd)
{
u16 cmd_idx = drv_cmd->host_tag - MPI3MR_HOSTTAG_EVTACKCMD_MIN;
struct delayed_evt_ack_node *delayed_evtack = NULL;
if (drv_cmd->state & MPI3MR_CMD_RESET)
goto clear_drv_cmd;
if (drv_cmd->ioc_status != MPI3_IOCSTATUS_SUCCESS) {
dprint_event_th(mrioc,
"immediate event ack failed with ioc_status(0x%04x) log_info(0x%08x)\n",
(drv_cmd->ioc_status & MPI3_IOCSTATUS_STATUS_MASK),
drv_cmd->ioc_loginfo);
}
if (!list_empty(&mrioc->delayed_evtack_cmds_list)) {
delayed_evtack =
list_entry(mrioc->delayed_evtack_cmds_list.next,
struct delayed_evt_ack_node, list);
mpi3mr_send_event_ack(mrioc, delayed_evtack->event, drv_cmd,
delayed_evtack->event_ctx);
list_del(&delayed_evtack->list);
kfree(delayed_evtack);
return;
}
clear_drv_cmd:
drv_cmd->state = MPI3MR_CMD_NOTUSED;
drv_cmd->callback = NULL;
clear_bit(cmd_idx, mrioc->evtack_cmds_bitmap);
}
/**
* mpi3mr_send_event_ack - Issue event acknwoledgment request
* @mrioc: Adapter instance reference
* @event: MPI3 event id
* @cmdparam: Internal command tracker
* @event_ctx: event context
*
* Issues event acknowledgment request to the firmware if there
* is a free command to send the event ack else it to a pend
* list so that it will be processed on a completion of a prior
* event acknowledgment .
*
* Return: Nothing
*/
static void mpi3mr_send_event_ack(struct mpi3mr_ioc *mrioc, u8 event,
struct mpi3mr_drv_cmd *cmdparam, u32 event_ctx)
{
struct mpi3_event_ack_request evtack_req;
int retval = 0;
u8 retrycount = 5;
u16 cmd_idx = MPI3MR_NUM_EVTACKCMD;
struct mpi3mr_drv_cmd *drv_cmd = cmdparam;
struct delayed_evt_ack_node *delayed_evtack = NULL;
if (drv_cmd) {
dprint_event_th(mrioc,
"sending delayed event ack in the top half for event(0x%02x), event_ctx(0x%08x)\n",
event, event_ctx);
goto issue_cmd;
}
dprint_event_th(mrioc,
"sending event ack in the top half for event(0x%02x), event_ctx(0x%08x)\n",
event, event_ctx);
do {
cmd_idx = find_first_zero_bit(mrioc->evtack_cmds_bitmap,
MPI3MR_NUM_EVTACKCMD);
if (cmd_idx < MPI3MR_NUM_EVTACKCMD) {
if (!test_and_set_bit(cmd_idx,
mrioc->evtack_cmds_bitmap))
break;
cmd_idx = MPI3MR_NUM_EVTACKCMD;
}
} while (retrycount--);
if (cmd_idx >= MPI3MR_NUM_EVTACKCMD) {
delayed_evtack = kzalloc(sizeof(*delayed_evtack),
GFP_ATOMIC);
if (!delayed_evtack)
return;
INIT_LIST_HEAD(&delayed_evtack->list);
delayed_evtack->event = event;
delayed_evtack->event_ctx = event_ctx;
list_add_tail(&delayed_evtack->list,
&mrioc->delayed_evtack_cmds_list);
dprint_event_th(mrioc,
"event ack in the top half for event(0x%02x), event_ctx(0x%08x) is postponed\n",
event, event_ctx);
return;
}
drv_cmd = &mrioc->evtack_cmds[cmd_idx];
issue_cmd:
cmd_idx = drv_cmd->host_tag - MPI3MR_HOSTTAG_EVTACKCMD_MIN;
memset(&evtack_req, 0, sizeof(evtack_req));
if (drv_cmd->state & MPI3MR_CMD_PENDING) {
dprint_event_th(mrioc,
"sending event ack failed due to command in use\n");
goto out;
}
drv_cmd->state = MPI3MR_CMD_PENDING;
drv_cmd->is_waiting = 0;
drv_cmd->callback = mpi3mr_complete_evt_ack;
evtack_req.host_tag = cpu_to_le16(drv_cmd->host_tag);
evtack_req.function = MPI3_FUNCTION_EVENT_ACK;
evtack_req.event = event;
evtack_req.event_context = cpu_to_le32(event_ctx);
retval = mpi3mr_admin_request_post(mrioc, &evtack_req,
sizeof(evtack_req), 1);
if (retval) {
dprint_event_th(mrioc,
"posting event ack request is failed\n");
goto out_failed;
}
dprint_event_th(mrioc,
"event ack in the top half for event(0x%02x), event_ctx(0x%08x) is posted\n",
event, event_ctx);
out:
return;
out_failed:
drv_cmd->state = MPI3MR_CMD_NOTUSED;
drv_cmd->callback = NULL;
clear_bit(cmd_idx, mrioc->evtack_cmds_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);
}
break;
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_preparereset_evt_th - Prepare for reset event tophalf
* @mrioc: Adapter instance reference
* @event_reply: event data
*
* Blocks and unblocks host level I/O based on the reason code
*
* Return: Nothing
*/
static void mpi3mr_preparereset_evt_th(struct mpi3mr_ioc *mrioc,
struct mpi3_event_notification_reply *event_reply)
{
struct mpi3_event_data_prepare_for_reset *evtdata =
(struct mpi3_event_data_prepare_for_reset *)event_reply->event_data;
if (evtdata->reason_code == MPI3_EVENT_PREPARE_RESET_RC_START) {
dprint_event_th(mrioc,
"prepare for reset event top half with rc=start\n");
if (mrioc->prepare_for_reset)
return;
mrioc->prepare_for_reset = 1;
mrioc->prepare_for_reset_timeout_counter = 0;
} else if (evtdata->reason_code == MPI3_EVENT_PREPARE_RESET_RC_ABORT) {
dprint_event_th(mrioc,
"prepare for reset top half with rc=abort\n");
mrioc->prepare_for_reset = 0;
mrioc->prepare_for_reset_timeout_counter = 0;
}
if ((event_reply->msg_flags & MPI3_EVENT_NOTIFY_MSGFLAGS_ACK_MASK)
== MPI3_EVENT_NOTIFY_MSGFLAGS_ACK_REQUIRED)
mpi3mr_send_event_ack(mrioc, event_reply->event, NULL,
le32_to_cpu(event_reply->event_context));
}
/**
* 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_cablemgmt_evt_th - Cable management event tophalf
* @mrioc: Adapter instance reference
* @event_reply: event data
*
* Displays Cable manegemt event details.
*
* Return: Nothing
*/
static void mpi3mr_cablemgmt_evt_th(struct mpi3mr_ioc *mrioc,
struct mpi3_event_notification_reply *event_reply)
{
struct mpi3_event_data_cable_management *evtdata =
(struct mpi3_event_data_cable_management *)event_reply->event_data;
switch (evtdata->status) {
case MPI3_EVENT_CABLE_MGMT_STATUS_INSUFFICIENT_POWER:
{
ioc_info(mrioc, "An active cable with receptacle_id %d cannot be powered.\n"
"Devices connected to this cable are not detected.\n"
"This cable requires %d mW of power.\n",
evtdata->receptacle_id,
le32_to_cpu(evtdata->active_cable_power_requirement));
break;
}
case MPI3_EVENT_CABLE_MGMT_STATUS_DEGRADED:
{
ioc_info(mrioc, "A cable with receptacle_id %d is not running at optimal speed\n",
evtdata->receptacle_id);
break;
}
default:
break;
}
}
/**
* mpi3mr_add_event_wait_for_device_refresh - Add Wait for Device Refresh Event
* @mrioc: Adapter instance reference
*
* Add driver specific event to make sure that the driver won't process the
* events until all the devices are refreshed during soft reset.
*
* Return: Nothing
*/
void mpi3mr_add_event_wait_for_device_refresh(struct mpi3mr_ioc *mrioc)
{
struct mpi3mr_fwevt *fwevt = NULL;
fwevt = mpi3mr_alloc_fwevt(0);
if (!fwevt) {
dprint_event_th(mrioc,
"failed to schedule bottom half handler for event(0x%02x)\n",
MPI3_EVENT_WAIT_FOR_DEVICES_TO_REFRESH);
return;
}
fwevt->mrioc = mrioc;
fwevt->event_id = MPI3_EVENT_WAIT_FOR_DEVICES_TO_REFRESH;
fwevt->send_ack = 0;
fwevt->process_evt = 1;
fwevt->evt_ctx = 0;
fwevt->event_data_size = 0;
mpi3mr_fwevt_add_to_list(mrioc, fwevt);
}
/**
* 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_PREPARE_FOR_RESET:
{
mpi3mr_preparereset_evt_th(mrioc, event_reply);
ack_req = 0;
break;
}
case MPI3_EVENT_DEVICE_INFO_CHANGED:
case MPI3_EVENT_LOG_DATA:
case MPI3_EVENT_ENCL_DEVICE_STATUS_CHANGE:
case MPI3_EVENT_ENCL_DEVICE_ADDED:
{
process_evt_bh = 1;
break;
}
case MPI3_EVENT_ENERGY_PACK_CHANGE:
{
mpi3mr_energypackchg_evt_th(mrioc, event_reply);
break;
}
case MPI3_EVENT_CABLE_MGMT:
{
mpi3mr_cablemgmt_evt_th(mrioc, event_reply);
break;
}
case MPI3_EVENT_SAS_DISCOVERY:
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_setup_eedp - Setup EEDP information in MPI3 SCSI IO
* @mrioc: Adapter instance reference
* @scmd: SCSI command reference
* @scsiio_req: MPI3 SCSI IO request
*
* Identifies the protection information flags from the SCSI
* command and set appropriate flags in the MPI3 SCSI IO
* request.
*
* Return: Nothing
*/
static void mpi3mr_setup_eedp(struct mpi3mr_ioc *mrioc,
struct scsi_cmnd *scmd, struct mpi3_scsi_io_request *scsiio_req)
{
u16 eedp_flags = 0;
unsigned char prot_op = scsi_get_prot_op(scmd);
switch (prot_op) {
case SCSI_PROT_NORMAL:
return;
case SCSI_PROT_READ_STRIP:
eedp_flags = MPI3_EEDPFLAGS_EEDP_OP_CHECK_REMOVE;
break;
case SCSI_PROT_WRITE_INSERT:
eedp_flags = MPI3_EEDPFLAGS_EEDP_OP_INSERT;
break;
case SCSI_PROT_READ_INSERT:
eedp_flags = MPI3_EEDPFLAGS_EEDP_OP_INSERT;
scsiio_req->msg_flags |= MPI3_SCSIIO_MSGFLAGS_METASGL_VALID;
break;
case SCSI_PROT_WRITE_STRIP:
eedp_flags = MPI3_EEDPFLAGS_EEDP_OP_CHECK_REMOVE;
scsiio_req->msg_flags |= MPI3_SCSIIO_MSGFLAGS_METASGL_VALID;
break;
case SCSI_PROT_READ_PASS:
eedp_flags = MPI3_EEDPFLAGS_EEDP_OP_CHECK;
scsiio_req->msg_flags |= MPI3_SCSIIO_MSGFLAGS_METASGL_VALID;
break;
case SCSI_PROT_WRITE_PASS:
if (scmd->prot_flags & SCSI_PROT_IP_CHECKSUM) {
eedp_flags = MPI3_EEDPFLAGS_EEDP_OP_CHECK_REGEN;
scsiio_req->sgl[0].eedp.application_tag_translation_mask =
0xffff;
} else
eedp_flags = MPI3_EEDPFLAGS_EEDP_OP_CHECK;
scsiio_req->msg_flags |= MPI3_SCSIIO_MSGFLAGS_METASGL_VALID;
break;
default:
return;
}
if (scmd->prot_flags & SCSI_PROT_GUARD_CHECK)
eedp_flags |= MPI3_EEDPFLAGS_CHK_GUARD;
if (scmd->prot_flags & SCSI_PROT_IP_CHECKSUM)
eedp_flags |= MPI3_EEDPFLAGS_HOST_GUARD_IP_CHKSUM;
if (scmd->prot_flags & SCSI_PROT_REF_CHECK) {
eedp_flags |= MPI3_EEDPFLAGS_CHK_REF_TAG |
MPI3_EEDPFLAGS_INCR_PRI_REF_TAG;
scsiio_req->cdb.eedp32.primary_reference_tag =
cpu_to_be32(scsi_prot_ref_tag(scmd));
}
if (scmd->prot_flags & SCSI_PROT_REF_INCREMENT)
eedp_flags |= MPI3_EEDPFLAGS_INCR_PRI_REF_TAG;
eedp_flags |= MPI3_EEDPFLAGS_ESC_MODE_APPTAG_DISABLE;
switch (scsi_prot_interval(scmd)) {
case 512:
scsiio_req->sgl[0].eedp.user_data_size = MPI3_EEDP_UDS_512;
break;
case 520:
scsiio_req->sgl[0].eedp.user_data_size = MPI3_EEDP_UDS_520;
break;
case 4080:
scsiio_req->sgl[0].eedp.user_data_size = MPI3_EEDP_UDS_4080;
break;
case 4088:
scsiio_req->sgl[0].eedp.user_data_size = MPI3_EEDP_UDS_4088;
break;
case 4096:
scsiio_req->sgl[0].eedp.user_data_size = MPI3_EEDP_UDS_4096;
break;
case 4104:
scsiio_req->sgl[0].eedp.user_data_size = MPI3_EEDP_UDS_4104;
break;
case 4160:
scsiio_req->sgl[0].eedp.user_data_size = MPI3_EEDP_UDS_4160;
break;
default:
break;
}
scsiio_req->sgl[0].eedp.eedp_flags = cpu_to_le16(eedp_flags);
scsiio_req->sgl[0].eedp.flags = MPI3_SGE_FLAGS_ELEMENT_TYPE_EXTENDED;
}
/**
* mpi3mr_build_sense_buffer - Map sense information
* @desc: Sense type
* @buf: Sense buffer to populate
* @key: Sense key
* @asc: Additional sense code
* @ascq: Additional sense code qualifier
*
* Maps the given sense information into either descriptor or
* fixed format sense data.
*
* Return: Nothing
*/
static inline void mpi3mr_build_sense_buffer(int desc, u8 *buf, u8 key,
u8 asc, u8 ascq)
{
if (desc) {
buf[0] = 0x72; /* descriptor, current */
buf[1] = key;
buf[2] = asc;
buf[3] = ascq;
buf[7] = 0;
} else {
buf[0] = 0x70; /* fixed, current */
buf[2] = key;
buf[7] = 0xa;
buf[12] = asc;
buf[13] = ascq;
}
}
/**
* mpi3mr_map_eedp_error - Map EEDP errors from IOC status
* @scmd: SCSI command reference
* @ioc_status: status of MPI3 request
*
* Maps the EEDP error status of the SCSI IO request to sense
* data.
*
* Return: Nothing
*/
static void mpi3mr_map_eedp_error(struct scsi_cmnd *scmd,
u16 ioc_status)
{
u8 ascq = 0;
switch (ioc_status) {
case MPI3_IOCSTATUS_EEDP_GUARD_ERROR:
ascq = 0x01;
break;
case MPI3_IOCSTATUS_EEDP_APP_TAG_ERROR:
ascq = 0x02;
break;
case MPI3_IOCSTATUS_EEDP_REF_TAG_ERROR:
ascq = 0x03;
break;
default:
ascq = 0x00;
break;
}
mpi3mr_build_sense_buffer(0, scmd->sense_buffer, ILLEGAL_REQUEST,
0x10, ascq);
scmd->result = (DID_ABORT << 16) | SAM_STAT_CHECK_CONDITION;
}
/**
* 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;
struct mpi3mr_stgt_priv_data *stgt_priv_data = NULL;
struct mpi3mr_sdev_priv_data *sdev_priv_data = NULL;
u32 ioc_pend_data_len = 0, tg_pend_data_len = 0, data_len_blks = 0;
struct mpi3mr_throttle_group_info *tg = NULL;
u8 throttle_enabled_dev = 0;
*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);
data_len_blks = scsi_bufflen(scmd) >> 9;
sdev_priv_data = scmd->device->hostdata;
if (sdev_priv_data) {
stgt_priv_data = sdev_priv_data->tgt_priv_data;
if (stgt_priv_data) {
tg = stgt_priv_data->throttle_group;
throttle_enabled_dev =
stgt_priv_data->io_throttle_enabled;
}
}
if (unlikely((data_len_blks >= mrioc->io_throttle_data_length) &&
throttle_enabled_dev)) {
ioc_pend_data_len = atomic_sub_return(data_len_blks,
&mrioc->pend_large_data_sz);
if (tg) {
tg_pend_data_len = atomic_sub_return(data_len_blks,
&tg->pend_large_data_sz);
if (tg->io_divert && ((ioc_pend_data_len <=
mrioc->io_throttle_low) &&
(tg_pend_data_len <= tg->low))) {
tg->io_divert = 0;
mpi3mr_set_io_divert_for_all_vd_in_tg(
mrioc, tg, 0);
}
} else {
if (ioc_pend_data_len <= mrioc->io_throttle_low)
stgt_priv_data->io_divert = 0;
}
} else if (unlikely((stgt_priv_data && stgt_priv_data->io_divert))) {
ioc_pend_data_len = atomic_read(&mrioc->pend_large_data_sz);
if (!tg) {
if (ioc_pend_data_len <= mrioc->io_throttle_low)
stgt_priv_data->io_divert = 0;
} else if (ioc_pend_data_len <= mrioc->io_throttle_low) {
tg_pend_data_len = atomic_read(&tg->pend_large_data_sz);
if (tg->io_divert && (tg_pend_data_len <= tg->low)) {
tg->io_divert = 0;
mpi3mr_set_io_divert_for_all_vd_in_tg(
mrioc, tg, 0);
}
}
}
if (success_desc) {
scmd->result = DID_OK << 16;
goto out_success;
}
scsi_set_resid(scmd, scsi_bufflen(scmd) - xfer_count);
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_EEDP_GUARD_ERROR:
case MPI3_IOCSTATUS_EEDP_REF_TAG_ERROR:
case MPI3_IOCSTATUS_EEDP_APP_TAG_ERROR:
mpi3mr_map_eedp_error(scmd, ioc_status);
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) &&
mrioc->logging_level & MPI3_DEBUG_SCSI_ERROR) {
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:
if (priv->meta_sg_valid) {
dma_unmap_sg(&mrioc->pdev->dev, scsi_prot_sglist(scmd),
scsi_prot_sg_count(scmd), scmd->sc_data_direction);
}
mpi3mr_clear_scmd_priv(mrioc, scmd);
scsi_dma_unmap(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;
u32 meta_sg = le32_to_cpu(scsiio_req->flags) &
MPI3_SCSIIO_FLAGS_DMAOPERATION_HOST_PI;
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;
if (meta_sg)
sg_local = &scsiio_req->sgl[MPI3_SCSIIO_METASGL_INDEX];
else
sg_local = &scsiio_req->sgl;
if (!scsiio_req->data_length && !meta_sg) {
mpi3mr_build_zero_len_sge(sg_local);
return 0;
}
if (meta_sg) {
sg_scmd = scsi_prot_sglist(scmd);
sges_left = dma_map_sg(&mrioc->pdev->dev,
scsi_prot_sglist(scmd),
scsi_prot_sg_count(scmd),
scmd->sc_data_direction);
priv->meta_sg_valid = 1; /* To unmap meta sg DMA */
} else {
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 (scsiio_req->sgl[0].eedp.flags ==
MPI3_SGE_FLAGS_ELEMENT_TYPE_EXTENDED && !meta_sg) {
sg_local += sizeof(struct mpi3_sge_common);
sges_in_segment--;
/* Reserve 1st segment (scsiio_req->sgl[0]) for eedp */
}
if (scsiio_req->msg_flags ==
MPI3_SCSIIO_MSGFLAGS_METASGL_VALID && !meta_sg) {
sges_in_segment--;
/* Reserve last segment (scsiio_req->sgl[3]) for meta sg */
}
if (meta_sg)
sges_in_segment = 1;
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];
if (meta_sg)
priv->meta_chain_idx = chain_idx;
else
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;
if (scsiio_req->msg_flags == MPI3_SCSIIO_MSGFLAGS_METASGL_VALID) {
/* There is a valid meta sg */
scsiio_req->flags |=
cpu_to_le32(MPI3_SCSIIO_FLAGS_DMAOPERATION_HOST_PI);
ret = mpi3mr_prepare_sg_scmd(mrioc, scmd, scsiio_req);
}
return ret;
}
/**
* mpi3mr_tm_response_name - get TM response as a string
* @resp_code: TM response code
*
* Convert known task management response code as a readable
* string.
*
* Return: response code string.
*/
static const char *mpi3mr_tm_response_name(u8 resp_code)
{
char *desc;
switch (resp_code) {
case MPI3_SCSITASKMGMT_RSPCODE_TM_COMPLETE:
desc = "task management request completed";
break;
case MPI3_SCSITASKMGMT_RSPCODE_INVALID_FRAME:
desc = "invalid frame";
break;
case MPI3_SCSITASKMGMT_RSPCODE_TM_FUNCTION_NOT_SUPPORTED:
desc = "task management request not supported";
break;
case MPI3_SCSITASKMGMT_RSPCODE_TM_FAILED:
desc = "task management request failed";
break;
case MPI3_SCSITASKMGMT_RSPCODE_TM_SUCCEEDED:
desc = "task management request succeeded";
break;
case MPI3_SCSITASKMGMT_RSPCODE_TM_INVALID_LUN:
desc = "invalid LUN";
break;
case MPI3_SCSITASKMGMT_RSPCODE_TM_OVERLAPPED_TAG:
desc = "overlapped tag attempted";
break;
case MPI3_SCSITASKMGMT_RSPCODE_IO_QUEUED_ON_IOC:
desc = "task queued, however not sent to target";
break;
case MPI3_SCSITASKMGMT_RSPCODE_TM_NVME_DENIED:
desc = "task management request denied by NVMe device";
break;
default:
desc = "unknown";
break;
}
return desc;
}
inline void mpi3mr_poll_pend_io_completions(struct mpi3mr_ioc *mrioc)
{
int i;
int num_of_reply_queues =
mrioc->num_op_reply_q + mrioc->op_reply_q_offset;
for (i = mrioc->op_reply_q_offset; i < num_of_reply_queues; i++)
mpi3mr_process_op_reply_q(mrioc,
mrioc->intr_info[i].op_reply_q);
}
/**
* 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
* @timeout: TM timeout value
* @drv_cmd: Internal command tracker
* @resp_code: Response code place holder
* @scmd: SCSI command
*
* 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
*/
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 scsi_cmnd *scmd)
{
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 scmd_priv *cmd_priv = NULL;
struct scsi_device *sdev = NULL;
struct mpi3mr_sdev_priv_data *sdev_priv_data = 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 (scmd) {
sdev = scmd->device;
sdev_priv_data = sdev->hostdata;
scsi_tgt_priv_data = ((sdev_priv_data) ?
sdev_priv_data->tgt_priv_data : NULL);
} else {
if (tgtdev && tgtdev->starget && tgtdev->starget->hostdata)
scsi_tgt_priv_data = (struct mpi3mr_stgt_priv_data *)
tgtdev->starget->hostdata;
}
if (scsi_tgt_priv_data)
atomic_inc(&scsi_tgt_priv_data->block_io);
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)) {
drv_cmd->is_waiting = 0;
retval = -1;
if (!(drv_cmd->state & MPI3MR_CMD_RESET)) {
dprint_tm(mrioc,
"task management request timed out after %ld seconds\n",
timeout);
if (mrioc->logging_level & MPI3_DEBUG_TM)
dprint_dump_req(&tm_req, sizeof(tm_req)/4);
mpi3mr_soft_reset_handler(mrioc,
MPI3MR_RESET_FROM_TM_TIMEOUT, 1);
}
goto out_unlock;
}
if (!(drv_cmd->state & MPI3MR_CMD_REPLY_VALID)) {
dprint_tm(mrioc, "invalid task management reply message\n");
retval = -1;
goto out_unlock;
}
tm_reply = (struct mpi3_scsi_task_mgmt_reply *)drv_cmd->reply;
switch (drv_cmd->ioc_status) {
case MPI3_IOCSTATUS_SUCCESS:
*resp_code = le32_to_cpu(tm_reply->response_data) &
MPI3MR_RI_MASK_RESPCODE;
break;
case MPI3_IOCSTATUS_SCSI_IOC_TERMINATED:
*resp_code = MPI3_SCSITASKMGMT_RSPCODE_TM_COMPLETE;
break;
default:
dprint_tm(mrioc,
"task management request to handle(0x%04x) is failed with ioc_status(0x%04x) log_info(0x%08x)\n",
handle, drv_cmd->ioc_status, drv_cmd->ioc_loginfo);
retval = -1;
goto out_unlock;
}
switch (*resp_code) {
case MPI3_SCSITASKMGMT_RSPCODE_TM_SUCCEEDED:
case MPI3_SCSITASKMGMT_RSPCODE_TM_COMPLETE:
break;
case MPI3_SCSITASKMGMT_RSPCODE_IO_QUEUED_ON_IOC:
if (tm_type != MPI3_SCSITASKMGMT_TASKTYPE_QUERY_TASK)
retval = -1;
break;
default:
retval = -1;
break;
}
dprint_tm(mrioc,
"task management request type(%d) completed for handle(0x%04x) with ioc_status(0x%04x), log_info(0x%08x), termination_count(%d), response:%s(0x%x)\n",
tm_type, handle, drv_cmd->ioc_status, drv_cmd->ioc_loginfo,
le32_to_cpu(tm_reply->termination_count),
mpi3mr_tm_response_name(*resp_code), *resp_code);
if (!retval) {
mpi3mr_ioc_disable_intr(mrioc);
mpi3mr_poll_pend_io_completions(mrioc);
mpi3mr_ioc_enable_intr(mrioc);
mpi3mr_poll_pend_io_completions(mrioc);
mpi3mr_process_admin_reply_q(mrioc);
}
switch (tm_type) {
case MPI3_SCSITASKMGMT_TASKTYPE_TARGET_RESET:
if (!scsi_tgt_priv_data)
break;
scsi_tgt_priv_data->pend_count = 0;
blk_mq_tagset_busy_iter(&mrioc->shost->tag_set,
mpi3mr_count_tgt_pending,
(void *)scsi_tgt_priv_data->starget);
break;
case MPI3_SCSITASKMGMT_TASKTYPE_LOGICAL_UNIT_RESET:
if (!sdev_priv_data)
break;
sdev_priv_data->pend_count = 0;
blk_mq_tagset_busy_iter(&mrioc->shost->tag_set,
mpi3mr_count_dev_pending, (void *)sdev);
break;
default:
break;
}
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);
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
*
* Maps default and poll queues.
*
* Return: return zero.
*/
static void mpi3mr_map_queues(struct Scsi_Host *shost)
{
struct mpi3mr_ioc *mrioc = shost_priv(shost);
int i, qoff, offset;
struct blk_mq_queue_map *map = NULL;
offset = mrioc->op_reply_q_offset;
for (i = 0, qoff = 0; i < HCTX_MAX_TYPES; i++) {
map = &shost->tag_set.map[i];
map->nr_queues = 0;
if (i == HCTX_TYPE_DEFAULT)
map->nr_queues = mrioc->default_qcount;
else if (i == HCTX_TYPE_POLL)
map->nr_queues = mrioc->active_poll_qcount;
if (!map->nr_queues) {
BUG_ON(i == HCTX_TYPE_DEFAULT);
continue;
}
/*
* The poll queue(s) doesn't have an IRQ (and hence IRQ
* affinity), so use the regular blk-mq cpu mapping
*/
map->queue_offset = qoff;
if (i != HCTX_TYPE_POLL)
blk_mq_pci_map_queues(map, mrioc->pdev, offset);
else
blk_mq_map_queues(map);
qoff += map->nr_queues;
offset += map->nr_queues;
}
}
/**
* 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;
if (stgt_priv_data->dev_removed) {
sdev_printk(KERN_INFO, scmd->device,
"%s:target(handle = 0x%04x) is removed, target reset is not issued\n",
mrioc->name, dev_handle);
retval = FAILED;
goto out;
}
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, scmd);
if (ret)
goto out;
if (stgt_priv_data->pend_count) {
sdev_printk(KERN_INFO, scmd->device,
"%s: target has %d pending commands, target reset is failed\n",
mrioc->name, stgt_priv_data->pend_count);
goto out;
}
retval = SUCCESS;
out:
sdev_printk(KERN_INFO, scmd->device,
"%s: target reset is %s for scmd(%p)\n", mrioc->name,
((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;
if (stgt_priv_data->dev_removed) {
sdev_printk(KERN_INFO, scmd->device,
"%s: device(handle = 0x%04x) is removed, device(LUN) reset is not issued\n",
mrioc->name, dev_handle);
retval = FAILED;
goto out;
}
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, scmd);
if (ret)
goto out;
if (sdev_priv_data->pend_count) {
sdev_printk(KERN_INFO, scmd->device,
"%s: device has %d pending commands, device(LUN) reset is failed\n",
mrioc->name, sdev_priv_data->pend_count);
goto out;
}
retval = SUCCESS;
out:
sdev_printk(KERN_INFO, scmd->device,
"%s: device(LUN) reset is %s for scmd(%p)\n", mrioc->name,
((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;
u32 ioc_status = readl(&mrioc->sysif_regs->ioc_status);
if ((ioc_status & MPI3_SYSIF_IOC_STATUS_RESET_HISTORY) ||
(ioc_status & MPI3_SYSIF_IOC_STATUS_FAULT)) {
ioc_err(mrioc, "port enable failed due to fault or reset\n");
mpi3mr_print_fault_info(mrioc);
mrioc->scan_failed = MPI3_IOCSTATUS_INTERNAL_ERROR;
mrioc->scan_started = 0;
mrioc->init_cmds.is_waiting = 0;
mrioc->init_cmds.callback = NULL;
mrioc->init_cmds.state = MPI3MR_CMD_NOTUSED;
}
if (time >= (pe_timeout * HZ)) {
ioc_err(mrioc, "port enable failed due to time out\n");
mpi3mr_check_rh_fault_ioc(mrioc,
MPI3MR_RESET_FROM_PE_TIMEOUT);
mrioc->scan_failed = MPI3_IOCSTATUS_INTERNAL_ERROR;
mrioc->scan_started = 0;
mrioc->init_cmds.is_waiting = 0;
mrioc->init_cmds.callback = NULL;
mrioc->init_cmds.state = MPI3MR_CMD_NOTUSED;
}
if (mrioc->scan_started)
return 0;
if (mrioc->scan_failed) {
ioc_err(mrioc,
"port enable failed with status=0x%04x\n",
mrioc->scan_failed);
} else
ioc_info(mrioc, "port enable is successfully completed\n");
mpi3mr_start_watchdog(mrioc);
mrioc->is_driver_loading = 0;
mrioc->stop_bsgs = 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 = NULL;
unsigned long flags;
struct scsi_target *starget;
struct sas_rphy *rphy = NULL;
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);
if (starget->channel == mrioc->scsi_device_channel)
tgt_dev = __mpi3mr_get_tgtdev_by_perst_id(mrioc, starget->id);
else if (mrioc->sas_transport_enabled && !starget->channel) {
rphy = dev_to_rphy(starget->dev.parent);
tgt_dev = __mpi3mr_get_tgtdev_by_addr_and_rphy(mrioc,
rphy->identify.sas_address, rphy);
}
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 = NULL;
unsigned long flags;
int retval = 0;
struct sas_rphy *rphy = NULL;
starget = scsi_target(sdev);
shost = dev_to_shost(&starget->dev);
mrioc = shost_priv(shost);
spin_lock_irqsave(&mrioc->tgtdev_lock, flags);
if (starget->channel == mrioc->scsi_device_channel)
tgt_dev = __mpi3mr_get_tgtdev_by_perst_id(mrioc, starget->id);
else if (mrioc->sas_transport_enabled && !starget->channel) {
rphy = dev_to_rphy(starget->dev.parent);
tgt_dev = __mpi3mr_get_tgtdev_by_addr_and_rphy(mrioc,
rphy->identify.sas_address, rphy);
}
spin_unlock_irqrestore(&mrioc->tgtdev_lock, flags);
if (!tgt_dev)
return -ENXIO;
mpi3mr_change_queue_depth(sdev, tgt_dev->q_depth);
sdev->eh_timeout = MPI3MR_EH_SCMD_TIMEOUT;
blk_queue_rq_timeout(sdev->request_queue, MPI3MR_SCMD_TIMEOUT);
switch (tgt_dev->dev_type) {
case MPI3_DEVICE_DEVFORM_PCIE:
/*The block layer hw sector size = 512*/
if ((tgt_dev->dev_spec.pcie_inf.dev_info &
MPI3_DEVICE0_PCIE_DEVICE_INFO_TYPE_MASK) ==
MPI3_DEVICE0_PCIE_DEVICE_INFO_TYPE_NVME_DEVICE) {
blk_queue_max_hw_sectors(sdev->request_queue,
tgt_dev->dev_spec.pcie_inf.mdts / 512);
if (tgt_dev->dev_spec.pcie_inf.pgsz == 0)
blk_queue_virt_boundary(sdev->request_queue,
((1 << MPI3MR_DEFAULT_PGSZEXP) - 1));
else
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 = NULL;
struct mpi3mr_sdev_priv_data *scsi_dev_priv_data;
unsigned long flags;
struct scsi_target *starget;
int retval = 0;
struct sas_rphy *rphy = NULL;
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);
if (starget->channel == mrioc->scsi_device_channel)
tgt_dev = __mpi3mr_get_tgtdev_by_perst_id(mrioc, starget->id);
else if (mrioc->sas_transport_enabled && !starget->channel) {
rphy = dev_to_rphy(starget->dev.parent);
tgt_dev = __mpi3mr_get_tgtdev_by_addr_and_rphy(mrioc,
rphy->identify.sas_address, rphy);
}
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;
struct sas_rphy *rphy = NULL;
bool update_stgt_priv_data = false;
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;
spin_lock_irqsave(&mrioc->tgtdev_lock, flags);
if (starget->channel == mrioc->scsi_device_channel) {
tgt_dev = __mpi3mr_get_tgtdev_by_perst_id(mrioc, starget->id);
if (tgt_dev && !tgt_dev->is_hidden)
update_stgt_priv_data = true;
else
retval = -ENXIO;
} else if (mrioc->sas_transport_enabled && !starget->channel) {
rphy = dev_to_rphy(starget->dev.parent);
tgt_dev = __mpi3mr_get_tgtdev_by_addr_and_rphy(mrioc,
rphy->identify.sas_address, rphy);
if (tgt_dev && !tgt_dev->is_hidden && !tgt_dev->non_stl &&
(tgt_dev->dev_type == MPI3_DEVICE_DEVFORM_SAS_SATA))
update_stgt_priv_data = true;
else
retval = -ENXIO;
}
if (update_stgt_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;
scsi_tgt_priv_data->io_throttle_enabled =
tgt_dev->io_throttle_enabled;
if (tgt_dev->dev_type == MPI3_DEVICE_DEVFORM_VD)
scsi_tgt_priv_data->throttle_group =
tgt_dev->dev_spec.vd_inf.tg;
}
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, trunc_param_len;
trunc_param_len = param_len = get_unaligned_be16(scmd->cmnd + 7);
if (mrioc->pdev->revision) {
if ((param_len > 24) && ((param_len - 8) & 0xF)) {
trunc_param_len -= (param_len - 8) & 0xF;
dprint_scsi_command(mrioc, scmd, MPI3_DEBUG_SCSI_ERROR);
dprint_scsi_err(mrioc,
"truncating param_len from (%d) to (%d)\n",
param_len, trunc_param_len);
put_unaligned_be16(trunc_param_len, scmd->cmnd + 7);
dprint_scsi_command(mrioc, scmd, MPI3_DEBUG_SCSI_ERROR);
}
return false;
}
if (!param_len) {
ioc_warn(mrioc,
"%s: cdb received with zero parameter length\n",
__func__);
scsi_print_command(scmd);
scmd->result = DID_OK << 16;
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 = SAM_STAT_CHECK_CONDITION;
scsi_build_sense_buffer(0, scmd->sense_buffer, ILLEGAL_REQUEST,
0x1A, 0);
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 = SAM_STAT_CHECK_CONDITION;
scsi_build_sense_buffer(0, scmd->sense_buffer, ILLEGAL_REQUEST,
0x1A, 0);
scsi_done(scmd);
return true;
}
buf = kzalloc(scsi_bufflen(scmd), GFP_ATOMIC);
if (!buf) {
scsi_print_command(scmd);
scmd->result = SAM_STAT_CHECK_CONDITION;
scsi_build_sense_buffer(0, scmd->sense_buffer, ILLEGAL_REQUEST,
0x55, 0x03);
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 = SAM_STAT_CHECK_CONDITION;
scsi_build_sense_buffer(0, scmd->sense_buffer, ILLEGAL_REQUEST,
0x26, 0);
scsi_done(scmd);
kfree(buf);
return true;
}
if (param_len > (desc_len + 8)) {
trunc_param_len = desc_len + 8;
scsi_print_command(scmd);
dprint_scsi_err(mrioc,
"truncating param_len(%d) to desc_len+8(%d)\n",
param_len, trunc_param_len);
put_unaligned_be16(trunc_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, data_len_blks = 0;
struct request *rq = scsi_cmd_to_rq(scmd);
int iprio_class;
u8 is_pcie_dev = 0;
u32 tracked_io_sz = 0;
u32 ioc_pend_data_len = 0, tg_pend_data_len = 0;
struct mpi3mr_throttle_group_info *tg = NULL;
if (mrioc->unrecoverable) {
scmd->result = DID_ERROR << 16;
scsi_done(scmd);
goto out;
}
sdev_priv_data = scmd->device->hostdata;
if (!sdev_priv_data || !sdev_priv_data->tgt_priv_data) {
scmd->result = DID_NO_CONNECT << 16;
scsi_done(scmd);
goto out;
}
if (mrioc->stop_drv_processing &&
!(mpi3mr_allow_scmd_to_fw(scmd))) {
scmd->result = DID_NO_CONNECT << 16;
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;
if (atomic_read(&stgt_priv_data->block_io)) {
if (mrioc->stop_drv_processing) {
scmd->result = DID_NO_CONNECT << 16;
scsi_done(scmd);
goto out;
}
retval = SCSI_MLQUEUE_DEVICE_BUSY;
goto out;
}
dev_handle = stgt_priv_data->dev_handle;
if (dev_handle == MPI3MR_INVALID_DEV_HANDLE) {
scmd->result = DID_NO_CONNECT << 16;
scsi_done(scmd);
goto out;
}
if (stgt_priv_data->dev_removed) {
scmd->result = DID_NO_CONNECT << 16;
scsi_done(scmd);
goto out;
}
if (stgt_priv_data->dev_type == MPI3_DEVICE_DEVFORM_PCIE)
is_pcie_dev = 1;
if ((scmd->cmnd[0] == UNMAP) && is_pcie_dev &&
(mrioc->pdev->device == MPI3_MFGPAGE_DEVID_SAS4116) &&
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;
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);
mpi3mr_setup_eedp(mrioc, scmd, scsiio_req);
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];
data_len_blks = scsi_bufflen(scmd) >> 9;
if ((data_len_blks >= mrioc->io_throttle_data_length) &&
stgt_priv_data->io_throttle_enabled) {
tracked_io_sz = data_len_blks;
tg = stgt_priv_data->throttle_group;
if (tg) {
ioc_pend_data_len = atomic_add_return(data_len_blks,
&mrioc->pend_large_data_sz);
tg_pend_data_len = atomic_add_return(data_len_blks,
&tg->pend_large_data_sz);
if (!tg->io_divert && ((ioc_pend_data_len >=
mrioc->io_throttle_high) ||
(tg_pend_data_len >= tg->high))) {
tg->io_divert = 1;
tg->need_qd_reduction = 1;
mpi3mr_set_io_divert_for_all_vd_in_tg(mrioc,
tg, 1);
mpi3mr_queue_qd_reduction_event(mrioc, tg);
}
} else {
ioc_pend_data_len = atomic_add_return(data_len_blks,
&mrioc->pend_large_data_sz);
if (ioc_pend_data_len >= mrioc->io_throttle_high)
stgt_priv_data->io_divert = 1;
}
}
if (stgt_priv_data->io_divert) {
scsiio_req->msg_flags |=
MPI3_SCSIIO_MSGFLAGS_DIVERT_TO_FIRMWARE;
scsiio_flags |= MPI3_SCSIIO_FLAGS_DIVERT_REASON_IO_THROTTLING;
}
scsiio_req->flags = cpu_to_le32(scsiio_flags);
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;
if (tracked_io_sz) {
atomic_sub(tracked_io_sz, &mrioc->pend_large_data_sz);
if (tg)
atomic_sub(tracked_io_sz,
&tg->pend_large_data_sz);
}
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,
.mq_poll = mpi3mr_blk_mq_poll,
.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,
.max_segment_size = 0xffffffff,
.track_queue_depth = 1,
.cmd_size = sizeof(struct scmd_priv),
.shost_groups = mpi3mr_host_groups,
.sdev_groups = mpi3mr_dev_groups,
};
/**
* 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;
}
/**
* osintfc_mrioc_security_status -Check controller secure status
* @pdev: PCI device instance
*
* Read the Device Serial Number capability from PCI config
* space and decide whether the controller is secure or not.
*
* Return: 0 on success, non-zero on failure.
*/
static int
osintfc_mrioc_security_status(struct pci_dev *pdev)
{
u32 cap_data;
int base;
u32 ctlr_status;
u32 debug_status;
int retval = 0;
base = pci_find_ext_capability(pdev, PCI_EXT_CAP_ID_DSN);
if (!base) {
dev_err(&pdev->dev,
"%s: PCI_EXT_CAP_ID_DSN is not supported\n", __func__);
return -1;
}
pci_read_config_dword(pdev, base + 4, &cap_data);
debug_status = cap_data & MPI3MR_CTLR_SECURE_DBG_STATUS_MASK;
ctlr_status = cap_data & MPI3MR_CTLR_SECURITY_STATUS_MASK;
switch (ctlr_status) {
case MPI3MR_INVALID_DEVICE:
dev_err(&pdev->dev,
"%s: Non secure ctlr (Invalid) is detected: DID: 0x%x: SVID: 0x%x: SDID: 0x%x\n",
__func__, pdev->device, pdev->subsystem_vendor,
pdev->subsystem_device);
retval = -1;
break;
case MPI3MR_CONFIG_SECURE_DEVICE:
if (!debug_status)
dev_info(&pdev->dev,
"%s: Config secure ctlr is detected\n",
__func__);
break;
case MPI3MR_HARD_SECURE_DEVICE:
break;
case MPI3MR_TAMPERED_DEVICE:
dev_err(&pdev->dev,
"%s: Non secure ctlr (Tampered) is detected: DID: 0x%x: SVID: 0x%x: SDID: 0x%x\n",
__func__, pdev->device, pdev->subsystem_vendor,
pdev->subsystem_device);
retval = -1;
break;
default:
retval = -1;
break;
}
if (!retval && debug_status) {
dev_err(&pdev->dev,
"%s: Non secure ctlr (Secure Dbg) is detected: DID: 0x%x: SVID: 0x%x: SDID: 0x%x\n",
__func__, pdev->device, pdev->subsystem_vendor,
pdev->subsystem_device);
retval = -1;
}
return retval;
}
/**
* 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;
if (osintfc_mrioc_security_status(pdev)) {
warn_non_secure_ctlr = 1;
return 1; /* For Invalid and Tampered device */
}
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);
spin_lock_init(&mrioc->sas_node_lock);
INIT_LIST_HEAD(&mrioc->fwevt_list);
INIT_LIST_HEAD(&mrioc->tgtdev_list);
INIT_LIST_HEAD(&mrioc->delayed_rmhs_list);
INIT_LIST_HEAD(&mrioc->delayed_evtack_cmds_list);
INIT_LIST_HEAD(&mrioc->sas_expander_list);
INIT_LIST_HEAD(&mrioc->hba_port_table_list);
INIT_LIST_HEAD(&mrioc->enclosure_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);
mpi3mr_init_drv_cmd(&mrioc->bsg_cmds, MPI3MR_HOSTTAG_BSG_CMDS);
mpi3mr_init_drv_cmd(&mrioc->cfg_cmds, MPI3MR_HOSTTAG_CFG_CMDS);
mpi3mr_init_drv_cmd(&mrioc->transport_cmds,
MPI3MR_HOSTTAG_TRANSPORT_CMDS);
for (i = 0; i < MPI3MR_NUM_DEVRMCMD; i++)
mpi3mr_init_drv_cmd(&mrioc->dev_rmhs_cmds[i],
MPI3MR_HOSTTAG_DEVRMCMD_MIN + i);
for (i = 0; i < MPI3MR_NUM_EVTACKCMD; i++)
mpi3mr_init_drv_cmd(&mrioc->evtack_cmds[i],
MPI3MR_HOSTTAG_EVTACKCMD_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;
mrioc->stop_bsgs = 1;
/* init shost parameters */
shost->max_cmd_len = MPI3MR_MAX_CDB_LENGTH;
shost->max_lun = -1;
shost->unique_id = mrioc->id;
shost->max_channel = 0;
shost->max_id = 0xFFFFFFFF;
shost->host_tagset = 1;
if (prot_mask >= 0)
scsi_host_set_prot(shost, prot_mask);
else {
prot_mask = SHOST_DIF_TYPE1_PROTECTION
| SHOST_DIF_TYPE2_PROTECTION
| SHOST_DIF_TYPE3_PROTECTION;
scsi_host_set_prot(shost, prot_mask);
}
ioc_info(mrioc,
"%s :host protection capabilities enabled %s%s%s%s%s%s%s\n",
__func__,
(prot_mask & SHOST_DIF_TYPE1_PROTECTION) ? " DIF1" : "",
(prot_mask & SHOST_DIF_TYPE2_PROTECTION) ? " DIF2" : "",
(prot_mask & SHOST_DIF_TYPE3_PROTECTION) ? " DIF3" : "",
(prot_mask & SHOST_DIX_TYPE0_PROTECTION) ? " DIX0" : "",
(prot_mask & SHOST_DIX_TYPE1_PROTECTION) ? " DIX1" : "",
(prot_mask & SHOST_DIX_TYPE2_PROTECTION) ? " DIX2" : "",
(prot_mask & SHOST_DIX_TYPE3_PROTECTION) ? " DIX3" : "");
if (prot_guard_mask)
scsi_host_set_guard(shost, (prot_guard_mask & 3));
else
scsi_host_set_guard(shost, SHOST_DIX_GUARD_CRC);
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, 0);
if (!mrioc->fwevt_worker_thread) {
ioc_err(mrioc, "failure at %s:%d/%s()!\n",
__FILE__, __LINE__, __func__);
retval = -ENODEV;
goto fwevtthread_failed;
}
mrioc->is_driver_loading = 1;
mrioc->cpu_count = num_online_cpus();
if (mpi3mr_setup_resources(mrioc)) {
ioc_err(mrioc, "setup resources failed\n");
retval = -ENODEV;
goto resource_alloc_failed;
}
if (mpi3mr_init_ioc(mrioc)) {
ioc_err(mrioc, "initializing IOC failed\n");
retval = -ENODEV;
goto init_ioc_failed;
}
shost->nr_hw_queues = mrioc->num_op_reply_q;
if (mrioc->active_poll_qcount)
shost->nr_maps = 3;
shost->can_queue = mrioc->max_host_ios;
shost->sg_tablesize = MPI3MR_SG_DEPTH;
shost->max_id = mrioc->facts.max_perids + 1;
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);
mpi3mr_bsg_init(mrioc);
return retval;
addhost_failed:
mpi3mr_stop_watchdog(mrioc);
mpi3mr_cleanup_ioc(mrioc);
init_ioc_failed:
mpi3mr_free_mem(mrioc);
mpi3mr_cleanup_resources(mrioc);
resource_alloc_failed:
destroy_workqueue(mrioc->fwevt_worker_thread);
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
*
* Cleanup the IOC by issuing MUR and shutdown notification.
* 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;
struct mpi3mr_hba_port *port, *hba_port_next;
struct mpi3mr_sas_node *sas_expander, *sas_expander_next;
if (!shost)
return;
mrioc = shost_priv(shost);
while (mrioc->reset_in_progress || mrioc->is_driver_loading)
ssleep(1);
if (!pci_device_is_present(mrioc->pdev)) {
mrioc->unrecoverable = 1;
mpi3mr_flush_cmds_for_unrecovered_controller(mrioc);
}
mpi3mr_bsg_exit(mrioc);
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);
if (mrioc->sas_transport_enabled)
sas_remove_host(shost);
else
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_stop_watchdog(mrioc);
mpi3mr_cleanup_ioc(mrioc);
mpi3mr_free_mem(mrioc);
mpi3mr_cleanup_resources(mrioc);
spin_lock_irqsave(&mrioc->sas_node_lock, flags);
list_for_each_entry_safe_reverse(sas_expander, sas_expander_next,
&mrioc->sas_expander_list, list) {
spin_unlock_irqrestore(&mrioc->sas_node_lock, flags);
mpi3mr_expander_node_remove(mrioc, sas_expander);
spin_lock_irqsave(&mrioc->sas_node_lock, flags);
}
list_for_each_entry_safe(port, hba_port_next, &mrioc->hba_port_table_list, list) {
ioc_info(mrioc,
"removing hba_port entry: %p port: %d from hba_port list\n",
port, port->port_id);
list_del(&port->list);
kfree(port);
}
spin_unlock_irqrestore(&mrioc->sas_node_lock, flags);
if (mrioc->sas_hba.num_phys) {
kfree(mrioc->sas_hba.phy);
mrioc->sas_hba.phy = NULL;
mrioc->sas_hba.num_phys = 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_stop_watchdog(mrioc);
mpi3mr_cleanup_ioc(mrioc);
mpi3mr_cleanup_resources(mrioc);
}
/**
* mpi3mr_suspend - PCI power management suspend callback
* @dev: Device struct
*
* Change the power state to the given value and cleanup the IOC
* by issuing MUR and shutdown notification
*
* Return: 0 always.
*/
static int __maybe_unused
mpi3mr_suspend(struct device *dev)
{
struct pci_dev *pdev = to_pci_dev(dev);
struct Scsi_Host *shost = pci_get_drvdata(pdev);
struct mpi3mr_ioc *mrioc;
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);
ioc_info(mrioc, "pdev=0x%p, slot=%s, entering operating state\n",
pdev, pci_name(pdev));
mpi3mr_cleanup_resources(mrioc);
return 0;
}
/**
* mpi3mr_resume - PCI power management resume callback
* @dev: Device struct
*
* 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 __maybe_unused
mpi3mr_resume(struct device *dev)
{
struct pci_dev *pdev = to_pci_dev(dev);
struct Scsi_Host *shost = pci_get_drvdata(pdev);
struct mpi3mr_ioc *mrioc;
pci_power_t device_state = pdev->current_state;
int r;
if (!shost)
return 0;
mrioc = shost_priv(shost);
ioc_info(mrioc, "pdev=0x%p, slot=%s, previous operating state [D%d]\n",
pdev, pci_name(pdev), device_state);
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_invalidate_devhandles(mrioc);
mpi3mr_free_enclosure_list(mrioc);
mpi3mr_memset_buffers(mrioc);
r = mpi3mr_reinit_ioc(mrioc, 1);
if (r) {
ioc_err(mrioc, "resuming controller failed[%d]\n", r);
return r;
}
ssleep(MPI3MR_RESET_TOPOLOGY_SETTLE_TIME);
scsi_unblock_requests(shost);
mrioc->device_refresh_on = 0;
mpi3mr_start_watchdog(mrioc);
return 0;
}
static const struct pci_device_id mpi3mr_pci_id_table[] = {
{
PCI_DEVICE_SUB(MPI3_MFGPAGE_VENDORID_BROADCOM,
MPI3_MFGPAGE_DEVID_SAS4116, PCI_ANY_ID, PCI_ANY_ID)
},
{ 0 }
};
MODULE_DEVICE_TABLE(pci, mpi3mr_pci_id_table);
static SIMPLE_DEV_PM_OPS(mpi3mr_pm_ops, mpi3mr_suspend, mpi3mr_resume);
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,
.driver.pm = &mpi3mr_pm_ops,
};
static ssize_t event_counter_show(struct device_driver *dd, char *buf)
{
return sprintf(buf, "%llu\n", atomic64_read(&event_counter));
}
static DRIVER_ATTR_RO(event_counter);
static int __init mpi3mr_init(void)
{
int ret_val;
pr_info("Loading %s version %s\n", MPI3MR_DRIVER_NAME,
MPI3MR_DRIVER_VERSION);
mpi3mr_transport_template =
sas_attach_transport(&mpi3mr_transport_functions);
if (!mpi3mr_transport_template) {
pr_err("%s failed to load due to sas transport attach failure\n",
MPI3MR_DRIVER_NAME);
return -ENODEV;
}
ret_val = pci_register_driver(&mpi3mr_pci_driver);
if (ret_val) {
pr_err("%s failed to load due to pci register driver failure\n",
MPI3MR_DRIVER_NAME);
goto err_pci_reg_fail;
}
ret_val = driver_create_file(&mpi3mr_pci_driver.driver,
&driver_attr_event_counter);
if (ret_val)
goto err_event_counter;
return ret_val;
err_event_counter:
pci_unregister_driver(&mpi3mr_pci_driver);
err_pci_reg_fail:
sas_release_transport(mpi3mr_transport_template);
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);
driver_remove_file(&mpi3mr_pci_driver.driver,
&driver_attr_event_counter);
pci_unregister_driver(&mpi3mr_pci_driver);
sas_release_transport(mpi3mr_transport_template);
}
module_init(mpi3mr_init);
module_exit(mpi3mr_exit);