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[SCSI] be2iscsi: Fix AER handling in driver

Browse source 
Signed-off-by: Minh Tran <minhduc.tran@emulex.com>
Signed-off-by: John Soni Jose <sony.john-n@emulex.com>
Signed-off-by: Jayamohan Kallickal <jayamohan.kallickal@emulex.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
This commit is contained in:
Jayamohan Kallickal 2013-09-28 15:35:58 -07:00 committed by James Bottomley
parent 7626c06b1b
commit 3567f36a09
4 changed files with 270 additions and 29 deletions
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2
drivers/scsi/be2iscsi/be_cmds.c
View file

@ -377,7 +377,7 @@ void beiscsi_async_link_state_process(struct beiscsi_hba *phba,
} else if ((evt->port_link_status & ASYNC_EVENT_LINK_UP) ||
((evt->port_link_status & ASYNC_EVENT_LOGICAL) &&
(evt->port_fault == BEISCSI_PHY_LINK_FAULT_NONE))) {
phba->state = BE_ADAPTER_UP;
phba->state = BE_ADAPTER_LINK_UP;
beiscsi_log(phba, KERN_ERR,
BEISCSI_LOG_CONFIG | BEISCSI_LOG_INIT,

68
drivers/scsi/be2iscsi/be_iscsi.c
View file

@ -58,10 +58,15 @@ struct iscsi_cls_session *beiscsi_session_create(struct iscsi_endpoint *ep,
}
beiscsi_ep = ep->dd_data;
phba = beiscsi_ep->phba;
shost = phba->shost;
beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
"BS_%d : In beiscsi_session_create\n");
if (phba->state & BE_ADAPTER_PCI_ERR) {
beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
"BS_%d : PCI_ERROR Recovery\n");
return NULL;
} else {
beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
"BS_%d : In beiscsi_session_create\n");
}
if (cmds_max > beiscsi_ep->phba->params.wrbs_per_cxn) {
beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
@ -74,6 +79,7 @@ struct iscsi_cls_session *beiscsi_session_create(struct iscsi_endpoint *ep,
cmds_max = beiscsi_ep->phba->params.wrbs_per_cxn;
}
shost = phba->shost;
cls_session = iscsi_session_setup(&beiscsi_iscsi_transport,
shost, cmds_max,
sizeof(*beiscsi_sess),
@ -477,6 +483,12 @@ int be2iscsi_iface_set_param(struct Scsi_Host *shost,
uint32_t rm_len = dt_len;
int ret = 0 ;
if (phba->state & BE_ADAPTER_PCI_ERR) {
beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
"BS_%d : In PCI_ERROR Recovery\n");
return -EBUSY;
}
nla_for_each_attr(attrib, data, dt_len, rm_len) {
iface_param = nla_data(attrib);
@ -588,6 +600,12 @@ int be2iscsi_iface_get_param(struct iscsi_iface *iface,
struct be_cmd_get_def_gateway_resp gateway;
int len = -ENOSYS;
if (phba->state & BE_ADAPTER_PCI_ERR) {
beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
"BS_%d : In PCI_ERROR Recovery\n");
return -EBUSY;
}
switch (param) {
case ISCSI_NET_PARAM_IPV4_ADDR:
case ISCSI_NET_PARAM_IPV4_SUBNET:
@ -737,7 +755,7 @@ static void beiscsi_get_port_state(struct Scsi_Host *shost)
struct beiscsi_hba *phba = iscsi_host_priv(shost);
struct iscsi_cls_host *ihost = shost->shost_data;
ihost->port_state = (phba->state == BE_ADAPTER_UP) ?
ihost->port_state = (phba->state == BE_ADAPTER_LINK_UP) ?
ISCSI_PORT_STATE_UP : ISCSI_PORT_STATE_DOWN;
}
@ -805,9 +823,16 @@ int beiscsi_get_host_param(struct Scsi_Host *shost,
struct beiscsi_hba *phba = iscsi_host_priv(shost);
int status = 0;
beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
"BS_%d : In beiscsi_get_host_param,"
" param= %d\n", param);
if (phba->state & BE_ADAPTER_PCI_ERR) {
beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
"BS_%d : In PCI_ERROR Recovery\n");
return -EBUSY;
} else {
beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
"BS_%d : In beiscsi_get_host_param,"
" param = %d\n", param);
}
switch (param) {
case ISCSI_HOST_PARAM_HWADDRESS:
@ -950,10 +975,19 @@ int beiscsi_conn_start(struct iscsi_cls_conn *cls_conn)
struct beiscsi_conn *beiscsi_conn = conn->dd_data;
struct beiscsi_endpoint *beiscsi_ep;
struct beiscsi_offload_params params;
struct beiscsi_hba *phba;
beiscsi_log(beiscsi_conn->phba, KERN_INFO,
BEISCSI_LOG_CONFIG,
"BS_%d : In beiscsi_conn_start\n");
phba = ((struct beiscsi_conn *)conn->dd_data)->phba;
if (phba->state & BE_ADAPTER_PCI_ERR) {
beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
"BS_%d : In PCI_ERROR Recovery\n");
return -EBUSY;
} else {
beiscsi_log(beiscsi_conn->phba, KERN_INFO,
BEISCSI_LOG_CONFIG,
"BS_%d : In beiscsi_conn_start\n");
}
memset(&params, 0, sizeof(struct beiscsi_offload_params));
beiscsi_ep = beiscsi_conn->ep;
@ -1178,7 +1212,12 @@ beiscsi_ep_connect(struct Scsi_Host *shost, struct sockaddr *dst_addr,
return ERR_PTR(ret);
}
if (phba->state != BE_ADAPTER_UP) {
if (phba->state & BE_ADAPTER_PCI_ERR) {
ret = -EBUSY;
beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
"BS_%d : In PCI_ERROR Recovery\n");
return ERR_PTR(ret);
} else if (phba->state & BE_ADAPTER_LINK_DOWN) {
ret = -EBUSY;
beiscsi_log(phba, KERN_WARNING, BEISCSI_LOG_CONFIG,
"BS_%d : The Adapter Port state is Down!!!\n");
@ -1303,6 +1342,12 @@ void beiscsi_ep_disconnect(struct iscsi_endpoint *ep)
tcp_upload_flag = CONNECTION_UPLOAD_ABORT;
}
if (phba->state & BE_ADAPTER_PCI_ERR) {
beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
"BS_%d : PCI_ERROR Recovery\n");
goto free_ep;
}
tag = mgmt_invalidate_connection(phba, beiscsi_ep,
beiscsi_ep->ep_cid,
mgmt_invalidate_flag,
@ -1315,6 +1360,7 @@ void beiscsi_ep_disconnect(struct iscsi_endpoint *ep)
beiscsi_mccq_compl(phba, tag, NULL, NULL);
beiscsi_close_conn(beiscsi_ep, tcp_upload_flag);
free_ep:
beiscsi_free_ep(beiscsi_ep);
beiscsi_unbind_conn_to_cid(phba, beiscsi_ep->ep_cid);
iscsi_destroy_endpoint(beiscsi_ep->openiscsi_ep);

220
drivers/scsi/be2iscsi/be_main.c
View file

@ -5140,10 +5140,12 @@ void beiscsi_hba_attrs_init(struct beiscsi_hba *phba)
/*
* beiscsi_quiesce()- Cleanup Driver resources
* @phba: Instance Priv structure
* @unload_state:i Clean or EEH unload state
*
* Free the OS and HW resources held by the driver
**/
static void beiscsi_quiesce(struct beiscsi_hba *phba)
static void beiscsi_quiesce(struct beiscsi_hba *phba,
uint32_t unload_state)
{
struct hwi_controller *phwi_ctrlr;
struct hwi_context_memory *phwi_context;
@ -5156,28 +5158,37 @@ static void beiscsi_quiesce(struct beiscsi_hba *phba)
if (phba->msix_enabled) {
for (i = 0; i <= phba->num_cpus; i++) {
msix_vec = phba->msix_entries[i].vector;
synchronize_irq(msix_vec);
free_irq(msix_vec, &phwi_context->be_eq[i]);
kfree(phba->msi_name[i]);
}
} else
if (phba->pcidev->irq)
if (phba->pcidev->irq) {
synchronize_irq(phba->pcidev->irq);
free_irq(phba->pcidev->irq, phba);
}
pci_disable_msix(phba->pcidev);
destroy_workqueue(phba->wq);
if (blk_iopoll_enabled)
for (i = 0; i < phba->num_cpus; i++) {
pbe_eq = &phwi_context->be_eq[i];
blk_iopoll_disable(&pbe_eq->iopoll);
}
beiscsi_clean_port(phba);
beiscsi_free_mem(phba);
if (unload_state == BEISCSI_CLEAN_UNLOAD) {
destroy_workqueue(phba->wq);
beiscsi_clean_port(phba);
beiscsi_free_mem(phba);
beiscsi_unmap_pci_function(phba);
pci_free_consistent(phba->pcidev,
phba->ctrl.mbox_mem_alloced.size,
phba->ctrl.mbox_mem_alloced.va,
phba->ctrl.mbox_mem_alloced.dma);
beiscsi_unmap_pci_function(phba);
pci_free_consistent(phba->pcidev,
phba->ctrl.mbox_mem_alloced.size,
phba->ctrl.mbox_mem_alloced.va,
phba->ctrl.mbox_mem_alloced.dma);
} else {
hwi_purge_eq(phba);
hwi_cleanup(phba);
}
cancel_delayed_work_sync(&phba->beiscsi_hw_check_task);
}
@ -5194,11 +5205,13 @@ static void beiscsi_remove(struct pci_dev *pcidev)
}
beiscsi_destroy_def_ifaces(phba);
beiscsi_quiesce(phba);
beiscsi_quiesce(phba, BEISCSI_CLEAN_UNLOAD);
iscsi_boot_destroy_kset(phba->boot_kset);
iscsi_host_remove(phba->shost);
pci_dev_put(phba->pcidev);
iscsi_host_free(phba->shost);
pci_disable_pcie_error_reporting(pcidev);
pci_set_drvdata(pcidev, NULL);
pci_disable_device(pcidev);
}
@ -5213,7 +5226,7 @@ static void beiscsi_shutdown(struct pci_dev *pcidev)
return;
}
beiscsi_quiesce(phba);
beiscsi_quiesce(phba, BEISCSI_CLEAN_UNLOAD);
pci_disable_device(pcidev);
}
@ -5251,6 +5264,167 @@ beiscsi_hw_health_check(struct work_struct *work)
msecs_to_jiffies(1000));
}
static pci_ers_result_t beiscsi_eeh_err_detected(struct pci_dev *pdev,
pci_channel_state_t state)
{
struct beiscsi_hba *phba = NULL;
phba = (struct beiscsi_hba *)pci_get_drvdata(pdev);
phba->state |= BE_ADAPTER_PCI_ERR;
beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
"BM_%d : EEH error detected\n");
beiscsi_quiesce(phba, BEISCSI_EEH_UNLOAD);
if (state == pci_channel_io_perm_failure) {
beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
"BM_%d : EEH : State PERM Failure");
return PCI_ERS_RESULT_DISCONNECT;
}
pci_disable_device(pdev);
/* The error could cause the FW to trigger a flash debug dump.
* Resetting the card while flash dump is in progress
* can cause it not to recover; wait for it to finish.
* Wait only for first function as it is needed only once per
* adapter.
**/
if (pdev->devfn == 0)
ssleep(30);
return PCI_ERS_RESULT_NEED_RESET;
}
static pci_ers_result_t beiscsi_eeh_reset(struct pci_dev *pdev)
{
struct beiscsi_hba *phba = NULL;
int status = 0;
phba = (struct beiscsi_hba *)pci_get_drvdata(pdev);
beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
"BM_%d : EEH Reset\n");
status = pci_enable_device(pdev);
if (status)
return PCI_ERS_RESULT_DISCONNECT;
pci_set_master(pdev);
pci_set_power_state(pdev, PCI_D0);
pci_restore_state(pdev);
/* Wait for the CHIP Reset to complete */
status = be_chk_reset_complete(phba);
if (!status) {
beiscsi_log(phba, KERN_WARNING, BEISCSI_LOG_INIT,
"BM_%d : EEH Reset Completed\n");
} else {
beiscsi_log(phba, KERN_WARNING, BEISCSI_LOG_INIT,
"BM_%d : EEH Reset Completion Failure\n");
return PCI_ERS_RESULT_DISCONNECT;
}
pci_cleanup_aer_uncorrect_error_status(pdev);
return PCI_ERS_RESULT_RECOVERED;
}
static void beiscsi_eeh_resume(struct pci_dev *pdev)
{
int ret = 0, i;
struct be_eq_obj *pbe_eq;
struct beiscsi_hba *phba = NULL;
struct hwi_controller *phwi_ctrlr;
struct hwi_context_memory *phwi_context;
phba = (struct beiscsi_hba *)pci_get_drvdata(pdev);
pci_save_state(pdev);
if (enable_msix)
find_num_cpus(phba);
else
phba->num_cpus = 1;
if (enable_msix) {
beiscsi_msix_enable(phba);
if (!phba->msix_enabled)
phba->num_cpus = 1;
}
ret = beiscsi_cmd_reset_function(phba);
if (ret) {
beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
"BM_%d : Reset Failed\n");
goto ret_err;
}
ret = be_chk_reset_complete(phba);
if (ret) {
beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
"BM_%d : Failed to get out of reset.\n");
goto ret_err;
}
beiscsi_get_params(phba);
phba->shost->max_id = phba->params.cxns_per_ctrl;
phba->shost->can_queue = phba->params.ios_per_ctrl;
ret = hwi_init_controller(phba);
for (i = 0; i < MAX_MCC_CMD; i++) {
init_waitqueue_head(&phba->ctrl.mcc_wait[i + 1]);
phba->ctrl.mcc_tag[i] = i + 1;
phba->ctrl.mcc_numtag[i + 1] = 0;
phba->ctrl.mcc_tag_available++;
}
phwi_ctrlr = phba->phwi_ctrlr;
phwi_context = phwi_ctrlr->phwi_ctxt;
if (blk_iopoll_enabled) {
for (i = 0; i < phba->num_cpus; i++) {
pbe_eq = &phwi_context->be_eq[i];
blk_iopoll_init(&pbe_eq->iopoll, be_iopoll_budget,
be_iopoll);
blk_iopoll_enable(&pbe_eq->iopoll);
}
i = (phba->msix_enabled) ? i : 0;
/* Work item for MCC handling */
pbe_eq = &phwi_context->be_eq[i];
INIT_WORK(&pbe_eq->work_cqs, beiscsi_process_all_cqs);
} else {
if (phba->msix_enabled) {
for (i = 0; i <= phba->num_cpus; i++) {
pbe_eq = &phwi_context->be_eq[i];
INIT_WORK(&pbe_eq->work_cqs,
beiscsi_process_all_cqs);
}
} else {
pbe_eq = &phwi_context->be_eq[0];
INIT_WORK(&pbe_eq->work_cqs,
beiscsi_process_all_cqs);
}
}
ret = beiscsi_init_irqs(phba);
if (ret < 0) {
beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
"BM_%d : beiscsi_eeh_resume - "
"Failed to beiscsi_init_irqs\n");
goto ret_err;
}
hwi_enable_intr(phba);
phba->state &= ~BE_ADAPTER_PCI_ERR;
return;
ret_err:
beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
"BM_%d : AER EEH Resume Failed\n");
}
static int beiscsi_dev_probe(struct pci_dev *pcidev,
const struct pci_device_id *id)
{
@ -5258,7 +5432,7 @@ static int beiscsi_dev_probe(struct pci_dev *pcidev,
struct hwi_controller *phwi_ctrlr;
struct hwi_context_memory *phwi_context;
struct be_eq_obj *pbe_eq;
int ret, i;
int ret = 0, i;
ret = beiscsi_enable_pci(pcidev);
if (ret < 0) {
@ -5274,6 +5448,15 @@ static int beiscsi_dev_probe(struct pci_dev *pcidev,
goto disable_pci;
}
/* Enable EEH reporting */
ret = pci_enable_pcie_error_reporting(pcidev);
if (ret)
beiscsi_log(phba, KERN_WARNING, BEISCSI_LOG_INIT,
"BM_%d : PCIe Error Reporting "
"Enabling Failed\n");
pci_save_state(pcidev);
/* Initialize Driver configuration Paramters */
beiscsi_hba_attrs_init(phba);
@ -5359,7 +5542,7 @@ static int beiscsi_dev_probe(struct pci_dev *pcidev,
goto free_port;
}
for (i = 0; i < MAX_MCC_CMD ; i++) {
for (i = 0; i < MAX_MCC_CMD; i++) {
init_waitqueue_head(&phba->ctrl.mcc_wait[i + 1]);
phba->ctrl.mcc_tag[i] = i + 1;
phba->ctrl.mcc_numtag[i + 1] = 0;
@ -5463,6 +5646,12 @@ static int beiscsi_dev_probe(struct pci_dev *pcidev,
return ret;
}
static struct pci_error_handlers beiscsi_eeh_handlers = {
.error_detected = beiscsi_eeh_err_detected,
.slot_reset = beiscsi_eeh_reset,
.resume = beiscsi_eeh_resume,
};
struct iscsi_transport beiscsi_iscsi_transport = {
.owner = THIS_MODULE,
.name = DRV_NAME,
@ -5501,7 +5690,8 @@ static struct pci_driver beiscsi_pci_driver = {
.probe = beiscsi_dev_probe,
.remove = beiscsi_remove,
.shutdown = beiscsi_shutdown,
.id_table = beiscsi_pci_id_table
.id_table = beiscsi_pci_id_table,
.err_handler = &beiscsi_eeh_handlers
};

9
drivers/scsi/be2iscsi/be_main.h
View file

@ -26,6 +26,7 @@
#include <linux/in.h>
#include <linux/ctype.h>
#include <linux/module.h>
#include <linux/aer.h>
#include <scsi/scsi.h>
#include <scsi/scsi_cmnd.h>
#include <scsi/scsi_device.h>
@ -96,8 +97,12 @@
#define INVALID_SESS_HANDLE 0xFFFFFFFF
#define BE_ADAPTER_UP 0x00000000
#define BE_ADAPTER_LINK_DOWN 0x00000001
#define BE_ADAPTER_LINK_UP 0x001
#define BE_ADAPTER_LINK_DOWN 0x002
#define BE_ADAPTER_PCI_ERR 0x004
#define BEISCSI_CLEAN_UNLOAD 0x01
#define BEISCSI_EEH_UNLOAD 0x02
/**
* hardware needs the async PDU buffers to be posted in multiples of 8
* So have atleast 8 of them by default