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[SCSI] cxgb3i: subscribe to error notification from cxgb3 driver

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Add error notification handling function which is called during chip reset.

Signed-off-by: Karen Xie <kxie@chelsio.com>
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
This commit is contained in:
Karen Xie 2009-04-01 13:11:23 -05:00 committed by James Bottomley
parent d8e9650765
commit 515f1c885a
3 changed files with 52 additions and 10 deletions
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10
drivers/scsi/cxgb3i/cxgb3i.h
View File

@ -66,10 +66,12 @@ struct cxgb3i_hba {
* @pdev: pointer to pci dev
* @hba_cnt: # of hbas (the same as # of ports)
* @hba: all the hbas on this adapter
* @flags: bit flag for adapter event/status
* @tx_max_size: max. tx packet size supported
* @rx_max_size: max. rx packet size supported
* @tag_format: ddp tag format settings
*/
#define CXGB3I_ADAPTER_FLAG_RESET 0x1
struct cxgb3i_adapter {
struct list_head list_head;
spinlock_t lock;
@ -78,6 +80,7 @@ struct cxgb3i_adapter {
unsigned char hba_cnt;
struct cxgb3i_hba *hba[MAX_NPORTS];
unsigned int flags;
unsigned int tx_max_size;
unsigned int rx_max_size;
@ -137,10 +140,9 @@ struct cxgb3i_task_data {
int cxgb3i_iscsi_init(void);
void cxgb3i_iscsi_cleanup(void);
struct cxgb3i_adapter *cxgb3i_adapter_add(struct t3cdev *);
void cxgb3i_adapter_remove(struct t3cdev *);
int cxgb3i_adapter_ulp_init(struct cxgb3i_adapter *);
void cxgb3i_adapter_ulp_cleanup(struct cxgb3i_adapter *);
struct cxgb3i_adapter *cxgb3i_adapter_find_by_tdev(struct t3cdev *);
struct cxgb3i_adapter *cxgb3i_adapter_open(struct t3cdev *);
void cxgb3i_adapter_close(struct t3cdev *);
struct cxgb3i_hba *cxgb3i_hba_find_by_netdev(struct net_device *);
struct cxgb3i_hba *cxgb3i_hba_host_add(struct cxgb3i_adapter *,

25
drivers/scsi/cxgb3i/cxgb3i_init.c
View File

@ -26,6 +26,7 @@ MODULE_VERSION(DRV_MODULE_VERSION);
static void open_s3_dev(struct t3cdev *);
static void close_s3_dev(struct t3cdev *);
static void s3_err_handler(struct t3cdev *tdev, u32 status, u32 error);
static cxgb3_cpl_handler_func cxgb3i_cpl_handlers[NUM_CPL_CMDS];
static struct cxgb3_client t3c_client = {
@ -33,6 +34,7 @@ static struct cxgb3_client t3c_client = {
.handlers = cxgb3i_cpl_handlers,
.add = open_s3_dev,
.remove = close_s3_dev,
.err_handler = s3_err_handler,
};
/**
@ -49,7 +51,7 @@ static void open_s3_dev(struct t3cdev *t3dev)
}
cxgb3i_sdev_add(t3dev, &t3c_client);
cxgb3i_adapter_add(t3dev);
cxgb3i_adapter_open(t3dev);
}
/**
@ -58,10 +60,29 @@ static void open_s3_dev(struct t3cdev *t3dev)
*/
static void close_s3_dev(struct t3cdev *t3dev)
{
cxgb3i_adapter_remove(t3dev);
cxgb3i_adapter_close(t3dev);
cxgb3i_sdev_remove(t3dev);
}
static void s3_err_handler(struct t3cdev *tdev, u32 status, u32 error)
{
struct cxgb3i_adapter *snic = cxgb3i_adapter_find_by_tdev(tdev);
cxgb3i_log_info("snic 0x%p, tdev 0x%p, status 0x%x, err 0x%x.\n",
snic, tdev, status, error);
if (!snic)
return;
switch (status) {
case OFFLOAD_STATUS_DOWN:
snic->flags |= CXGB3I_ADAPTER_FLAG_RESET;
break;
case OFFLOAD_STATUS_UP:
snic->flags &= ~CXGB3I_ADAPTER_FLAG_RESET;
break;
}
}
/**
* cxgb3i_init_module - module init entry point
*

27
drivers/scsi/cxgb3i/cxgb3i_iscsi.c
View File

@ -53,11 +53,30 @@ static LIST_HEAD(cxgb3i_snic_list);
static DEFINE_RWLOCK(cxgb3i_snic_rwlock);
/**
* cxgb3i_adapter_add - init a s3 adapter structure and any h/w settings
* cxgb3i_adpater_find_by_tdev - find the cxgb3i_adapter structure via t3cdev
* @tdev: t3cdev pointer
*/
struct cxgb3i_adapter *cxgb3i_adapter_find_by_tdev(struct t3cdev *tdev)
{
struct cxgb3i_adapter *snic;
read_lock(&cxgb3i_snic_rwlock);
list_for_each_entry(snic, &cxgb3i_snic_list, list_head) {
if (snic->tdev == tdev) {
read_unlock(&cxgb3i_snic_rwlock);
return snic;
}
}
read_unlock(&cxgb3i_snic_rwlock);
return NULL;
}
/**
* cxgb3i_adapter_open - init a s3 adapter structure and any h/w settings
* @t3dev: t3cdev adapter
* return the resulting cxgb3i_adapter struct
*/
struct cxgb3i_adapter *cxgb3i_adapter_add(struct t3cdev *t3dev)
struct cxgb3i_adapter *cxgb3i_adapter_open(struct t3cdev *t3dev)
{
struct cxgb3i_adapter *snic;
struct adapter *adapter = tdev2adap(t3dev);
@ -101,10 +120,10 @@ free_snic:
}
/**
* cxgb3i_adapter_remove - release the resources held and cleanup h/w settings
* cxgb3i_adapter_close - release the resources held and cleanup h/w settings
* @t3dev: t3cdev adapter
*/
void cxgb3i_adapter_remove(struct t3cdev *t3dev)
void cxgb3i_adapter_close(struct t3cdev *t3dev)
{
int i;
struct cxgb3i_adapter *snic;