mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-26 19:00:25 +00:00
scsi: ipr: Add asynchronous error notification
This patch implements functions for pushing HCAM (host controlled asynchronous messages) error buffers to userspace through sysfs attributes. Reads to the "async_err_log" attribute will result in a single HCAM buffer being copied to userspace; one can process the next HCAM buffer by writing any string to the same attribute. A new list was added to the ioa_cfg structure to store the HCAM buffers for later reporting. We also send a KOBJ_CHANGE event whenever a new HCAM buffer is made available to userspace. Signed-off-by: Heitor Ricardo Alves de Siqueira <halves@linux.vnet.ibm.com> Signed-off-by: Gabriel Krisman Bertazi <krisman@linux.vnet.ibm.com> Signed-off-by: Brian King <brking@linux.vnet.ibm.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
parent
6328d9030f
commit
afc3f83cb4
2 changed files with 118 additions and 14 deletions
|
@ -1473,7 +1473,7 @@ static void ipr_process_ccn(struct ipr_cmnd *ipr_cmd)
|
|||
struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb;
|
||||
u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
|
||||
|
||||
list_del(&hostrcb->queue);
|
||||
list_del_init(&hostrcb->queue);
|
||||
list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
|
||||
|
||||
if (ioasc) {
|
||||
|
@ -2552,6 +2552,23 @@ static void ipr_handle_log_data(struct ipr_ioa_cfg *ioa_cfg,
|
|||
}
|
||||
}
|
||||
|
||||
static struct ipr_hostrcb *ipr_get_free_hostrcb(struct ipr_ioa_cfg *ioa)
|
||||
{
|
||||
struct ipr_hostrcb *hostrcb;
|
||||
|
||||
hostrcb = list_first_entry_or_null(&ioa->hostrcb_free_q,
|
||||
struct ipr_hostrcb, queue);
|
||||
|
||||
if (unlikely(!hostrcb)) {
|
||||
dev_info(&ioa->pdev->dev, "Reclaiming async error buffers.");
|
||||
hostrcb = list_first_entry_or_null(&ioa->hostrcb_report_q,
|
||||
struct ipr_hostrcb, queue);
|
||||
}
|
||||
|
||||
list_del_init(&hostrcb->queue);
|
||||
return hostrcb;
|
||||
}
|
||||
|
||||
/**
|
||||
* ipr_process_error - Op done function for an adapter error log.
|
||||
* @ipr_cmd: ipr command struct
|
||||
|
@ -2569,13 +2586,14 @@ static void ipr_process_error(struct ipr_cmnd *ipr_cmd)
|
|||
struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb;
|
||||
u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
|
||||
u32 fd_ioasc;
|
||||
char *envp[] = { "ASYNC_ERR_LOG=1", NULL };
|
||||
|
||||
if (ioa_cfg->sis64)
|
||||
fd_ioasc = be32_to_cpu(hostrcb->hcam.u.error64.fd_ioasc);
|
||||
else
|
||||
fd_ioasc = be32_to_cpu(hostrcb->hcam.u.error.fd_ioasc);
|
||||
|
||||
list_del(&hostrcb->queue);
|
||||
list_del_init(&hostrcb->queue);
|
||||
list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
|
||||
|
||||
if (!ioasc) {
|
||||
|
@ -2588,6 +2606,10 @@ static void ipr_process_error(struct ipr_cmnd *ipr_cmd)
|
|||
"Host RCB failed with IOASC: 0x%08X\n", ioasc);
|
||||
}
|
||||
|
||||
list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_report_q);
|
||||
hostrcb = ipr_get_free_hostrcb(ioa_cfg);
|
||||
kobject_uevent_env(&ioa_cfg->host->shost_dev.kobj, KOBJ_CHANGE, envp);
|
||||
|
||||
ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb);
|
||||
}
|
||||
|
||||
|
@ -4095,6 +4117,64 @@ static struct device_attribute ipr_ioa_fw_type_attr = {
|
|||
.show = ipr_show_fw_type
|
||||
};
|
||||
|
||||
static ssize_t ipr_read_async_err_log(struct file *filep, struct kobject *kobj,
|
||||
struct bin_attribute *bin_attr, char *buf,
|
||||
loff_t off, size_t count)
|
||||
{
|
||||
struct device *cdev = container_of(kobj, struct device, kobj);
|
||||
struct Scsi_Host *shost = class_to_shost(cdev);
|
||||
struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
|
||||
struct ipr_hostrcb *hostrcb;
|
||||
unsigned long lock_flags = 0;
|
||||
int ret;
|
||||
|
||||
spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
|
||||
hostrcb = list_first_entry_or_null(&ioa_cfg->hostrcb_report_q,
|
||||
struct ipr_hostrcb, queue);
|
||||
if (!hostrcb) {
|
||||
spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
|
||||
return 0;
|
||||
}
|
||||
ret = memory_read_from_buffer(buf, count, &off, &hostrcb->hcam,
|
||||
sizeof(hostrcb->hcam));
|
||||
spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
|
||||
return ret;
|
||||
}
|
||||
|
||||
static ssize_t ipr_next_async_err_log(struct file *filep, struct kobject *kobj,
|
||||
struct bin_attribute *bin_attr, char *buf,
|
||||
loff_t off, size_t count)
|
||||
{
|
||||
struct device *cdev = container_of(kobj, struct device, kobj);
|
||||
struct Scsi_Host *shost = class_to_shost(cdev);
|
||||
struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
|
||||
struct ipr_hostrcb *hostrcb;
|
||||
unsigned long lock_flags = 0;
|
||||
|
||||
spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
|
||||
hostrcb = list_first_entry_or_null(&ioa_cfg->hostrcb_report_q,
|
||||
struct ipr_hostrcb, queue);
|
||||
if (!hostrcb) {
|
||||
spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
|
||||
return count;
|
||||
}
|
||||
|
||||
/* Reclaim hostrcb before exit */
|
||||
list_move_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q);
|
||||
spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
|
||||
return count;
|
||||
}
|
||||
|
||||
static struct bin_attribute ipr_ioa_async_err_log = {
|
||||
.attr = {
|
||||
.name = "async_err_log",
|
||||
.mode = S_IRUGO | S_IWUSR,
|
||||
},
|
||||
.size = 0,
|
||||
.read = ipr_read_async_err_log,
|
||||
.write = ipr_next_async_err_log
|
||||
};
|
||||
|
||||
static struct device_attribute *ipr_ioa_attrs[] = {
|
||||
&ipr_fw_version_attr,
|
||||
&ipr_log_level_attr,
|
||||
|
@ -7026,8 +7106,7 @@ static int ipr_ioa_reset_done(struct ipr_cmnd *ipr_cmd)
|
|||
{
|
||||
struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
|
||||
struct ipr_resource_entry *res;
|
||||
struct ipr_hostrcb *hostrcb, *temp;
|
||||
int i = 0, j;
|
||||
int j;
|
||||
|
||||
ENTER;
|
||||
ioa_cfg->in_reset_reload = 0;
|
||||
|
@ -7048,12 +7127,16 @@ static int ipr_ioa_reset_done(struct ipr_cmnd *ipr_cmd)
|
|||
}
|
||||
schedule_work(&ioa_cfg->work_q);
|
||||
|
||||
list_for_each_entry_safe(hostrcb, temp, &ioa_cfg->hostrcb_free_q, queue) {
|
||||
list_del(&hostrcb->queue);
|
||||
if (i++ < IPR_NUM_LOG_HCAMS)
|
||||
ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb);
|
||||
for (j = 0; j < IPR_NUM_HCAMS; j++) {
|
||||
list_del_init(&ioa_cfg->hostrcb[j]->queue);
|
||||
if (j < IPR_NUM_LOG_HCAMS)
|
||||
ipr_send_hcam(ioa_cfg,
|
||||
IPR_HCAM_CDB_OP_CODE_LOG_DATA,
|
||||
ioa_cfg->hostrcb[j]);
|
||||
else
|
||||
ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
|
||||
ipr_send_hcam(ioa_cfg,
|
||||
IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE,
|
||||
ioa_cfg->hostrcb[j]);
|
||||
}
|
||||
|
||||
scsi_report_bus_reset(ioa_cfg->host, IPR_VSET_BUS);
|
||||
|
@ -8335,7 +8418,7 @@ static void ipr_get_unit_check_buffer(struct ipr_ioa_cfg *ioa_cfg)
|
|||
|
||||
hostrcb = list_entry(ioa_cfg->hostrcb_free_q.next,
|
||||
struct ipr_hostrcb, queue);
|
||||
list_del(&hostrcb->queue);
|
||||
list_del_init(&hostrcb->queue);
|
||||
memset(&hostrcb->hcam, 0, sizeof(hostrcb->hcam));
|
||||
|
||||
rc = ipr_get_ldump_data_section(ioa_cfg,
|
||||
|
@ -9332,7 +9415,7 @@ static void ipr_free_mem(struct ipr_ioa_cfg *ioa_cfg)
|
|||
dma_free_coherent(&ioa_cfg->pdev->dev, ioa_cfg->cfg_table_size,
|
||||
ioa_cfg->u.cfg_table, ioa_cfg->cfg_table_dma);
|
||||
|
||||
for (i = 0; i < IPR_NUM_HCAMS; i++) {
|
||||
for (i = 0; i < IPR_MAX_HCAMS; i++) {
|
||||
dma_free_coherent(&ioa_cfg->pdev->dev,
|
||||
sizeof(struct ipr_hostrcb),
|
||||
ioa_cfg->hostrcb[i],
|
||||
|
@ -9572,7 +9655,7 @@ static int ipr_alloc_mem(struct ipr_ioa_cfg *ioa_cfg)
|
|||
if (!ioa_cfg->u.cfg_table)
|
||||
goto out_free_host_rrq;
|
||||
|
||||
for (i = 0; i < IPR_NUM_HCAMS; i++) {
|
||||
for (i = 0; i < IPR_MAX_HCAMS; i++) {
|
||||
ioa_cfg->hostrcb[i] = dma_alloc_coherent(&pdev->dev,
|
||||
sizeof(struct ipr_hostrcb),
|
||||
&ioa_cfg->hostrcb_dma[i],
|
||||
|
@ -9714,6 +9797,7 @@ static void ipr_init_ioa_cfg(struct ipr_ioa_cfg *ioa_cfg,
|
|||
|
||||
INIT_LIST_HEAD(&ioa_cfg->hostrcb_free_q);
|
||||
INIT_LIST_HEAD(&ioa_cfg->hostrcb_pending_q);
|
||||
INIT_LIST_HEAD(&ioa_cfg->hostrcb_report_q);
|
||||
INIT_LIST_HEAD(&ioa_cfg->free_res_q);
|
||||
INIT_LIST_HEAD(&ioa_cfg->used_res_q);
|
||||
INIT_WORK(&ioa_cfg->work_q, ipr_worker_thread);
|
||||
|
@ -10352,6 +10436,8 @@ static void ipr_remove(struct pci_dev *pdev)
|
|||
&ipr_trace_attr);
|
||||
ipr_remove_dump_file(&ioa_cfg->host->shost_dev.kobj,
|
||||
&ipr_dump_attr);
|
||||
sysfs_remove_bin_file(&ioa_cfg->host->shost_dev.kobj,
|
||||
&ipr_ioa_async_err_log);
|
||||
scsi_remove_host(ioa_cfg->host);
|
||||
|
||||
__ipr_remove(pdev);
|
||||
|
@ -10400,10 +10486,25 @@ static int ipr_probe(struct pci_dev *pdev, const struct pci_device_id *dev_id)
|
|||
return rc;
|
||||
}
|
||||
|
||||
rc = sysfs_create_bin_file(&ioa_cfg->host->shost_dev.kobj,
|
||||
&ipr_ioa_async_err_log);
|
||||
|
||||
if (rc) {
|
||||
ipr_remove_dump_file(&ioa_cfg->host->shost_dev.kobj,
|
||||
&ipr_dump_attr);
|
||||
ipr_remove_trace_file(&ioa_cfg->host->shost_dev.kobj,
|
||||
&ipr_trace_attr);
|
||||
scsi_remove_host(ioa_cfg->host);
|
||||
__ipr_remove(pdev);
|
||||
return rc;
|
||||
}
|
||||
|
||||
rc = ipr_create_dump_file(&ioa_cfg->host->shost_dev.kobj,
|
||||
&ipr_dump_attr);
|
||||
|
||||
if (rc) {
|
||||
sysfs_remove_bin_file(&ioa_cfg->host->shost_dev.kobj,
|
||||
&ipr_ioa_async_err_log);
|
||||
ipr_remove_trace_file(&ioa_cfg->host->shost_dev.kobj,
|
||||
&ipr_trace_attr);
|
||||
scsi_remove_host(ioa_cfg->host);
|
||||
|
|
|
@ -154,7 +154,9 @@
|
|||
#define IPR_DEFAULT_MAX_ERROR_DUMP 984
|
||||
#define IPR_NUM_LOG_HCAMS 2
|
||||
#define IPR_NUM_CFG_CHG_HCAMS 2
|
||||
#define IPR_NUM_HCAM_QUEUE 12
|
||||
#define IPR_NUM_HCAMS (IPR_NUM_LOG_HCAMS + IPR_NUM_CFG_CHG_HCAMS)
|
||||
#define IPR_MAX_HCAMS (IPR_NUM_HCAMS + IPR_NUM_HCAM_QUEUE)
|
||||
|
||||
#define IPR_MAX_SIS64_TARGETS_PER_BUS 1024
|
||||
#define IPR_MAX_SIS64_LUNS_PER_TARGET 0xffffffff
|
||||
|
@ -1532,10 +1534,11 @@ struct ipr_ioa_cfg {
|
|||
|
||||
char ipr_hcam_label[8];
|
||||
#define IPR_HCAM_LABEL "hcams"
|
||||
struct ipr_hostrcb *hostrcb[IPR_NUM_HCAMS];
|
||||
dma_addr_t hostrcb_dma[IPR_NUM_HCAMS];
|
||||
struct ipr_hostrcb *hostrcb[IPR_MAX_HCAMS];
|
||||
dma_addr_t hostrcb_dma[IPR_MAX_HCAMS];
|
||||
struct list_head hostrcb_free_q;
|
||||
struct list_head hostrcb_pending_q;
|
||||
struct list_head hostrcb_report_q;
|
||||
|
||||
struct ipr_hrr_queue hrrq[IPR_MAX_HRRQ_NUM];
|
||||
u32 hrrq_num;
|
||||
|
|
Loading…
Reference in a new issue