ibmvnic: simplify and improve driver probe function
This patch creates a function that handles sub-CRQ IRQ creation separately from sub-CRQ initialization. Another function is then needed to release sub-CRQ resources prior to sub-CRQ IRQ creation. These additions allow the driver probe function to be simplified, specifically during the VNIC Server login process. A timeout is also included while waiting for completion of the login process in case the VNIC Server is not available or some other error occurs. Signed-off-by: Thomas Falcon <tlfalcon@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
parent
88eb98a017
commit
ea22d51a78
|
@ -89,6 +89,7 @@ MODULE_VERSION(IBMVNIC_DRIVER_VERSION);
|
|||
static int ibmvnic_version = IBMVNIC_INITIAL_VERSION;
|
||||
static int ibmvnic_remove(struct vio_dev *);
|
||||
static void release_sub_crqs(struct ibmvnic_adapter *);
|
||||
static void release_sub_crqs_no_irqs(struct ibmvnic_adapter *);
|
||||
static int ibmvnic_reset_crq(struct ibmvnic_adapter *);
|
||||
static int ibmvnic_send_crq_init(struct ibmvnic_adapter *);
|
||||
static int ibmvnic_reenable_crq_queue(struct ibmvnic_adapter *);
|
||||
|
@ -1213,12 +1214,6 @@ static struct ibmvnic_sub_crq_queue *init_sub_crq_queue(struct ibmvnic_adapter
|
|||
goto reg_failed;
|
||||
}
|
||||
|
||||
scrq->irq = irq_create_mapping(NULL, scrq->hw_irq);
|
||||
if (scrq->irq == NO_IRQ) {
|
||||
dev_err(dev, "Error mapping irq\n");
|
||||
goto map_irq_failed;
|
||||
}
|
||||
|
||||
scrq->adapter = adapter;
|
||||
scrq->size = 4 * PAGE_SIZE / sizeof(*scrq->msgs);
|
||||
scrq->cur = 0;
|
||||
|
@ -1231,12 +1226,6 @@ static struct ibmvnic_sub_crq_queue *init_sub_crq_queue(struct ibmvnic_adapter
|
|||
|
||||
return scrq;
|
||||
|
||||
map_irq_failed:
|
||||
do {
|
||||
rc = plpar_hcall_norets(H_FREE_SUB_CRQ,
|
||||
adapter->vdev->unit_address,
|
||||
scrq->crq_num);
|
||||
} while (rc == H_BUSY || H_IS_LONG_BUSY(rc));
|
||||
reg_failed:
|
||||
dma_unmap_single(dev, scrq->msg_token, 4 * PAGE_SIZE,
|
||||
DMA_BIDIRECTIONAL);
|
||||
|
@ -1279,6 +1268,29 @@ static void release_sub_crqs(struct ibmvnic_adapter *adapter)
|
|||
adapter->requested_caps = 0;
|
||||
}
|
||||
|
||||
static void release_sub_crqs_no_irqs(struct ibmvnic_adapter *adapter)
|
||||
{
|
||||
int i;
|
||||
|
||||
if (adapter->tx_scrq) {
|
||||
for (i = 0; i < adapter->req_tx_queues; i++)
|
||||
if (adapter->tx_scrq[i])
|
||||
release_sub_crq_queue(adapter,
|
||||
adapter->tx_scrq[i]);
|
||||
adapter->tx_scrq = NULL;
|
||||
}
|
||||
|
||||
if (adapter->rx_scrq) {
|
||||
for (i = 0; i < adapter->req_rx_queues; i++)
|
||||
if (adapter->rx_scrq[i])
|
||||
release_sub_crq_queue(adapter,
|
||||
adapter->rx_scrq[i]);
|
||||
adapter->rx_scrq = NULL;
|
||||
}
|
||||
|
||||
adapter->requested_caps = 0;
|
||||
}
|
||||
|
||||
static int disable_scrq_irq(struct ibmvnic_adapter *adapter,
|
||||
struct ibmvnic_sub_crq_queue *scrq)
|
||||
{
|
||||
|
@ -1398,6 +1410,66 @@ static irqreturn_t ibmvnic_interrupt_rx(int irq, void *instance)
|
|||
return IRQ_HANDLED;
|
||||
}
|
||||
|
||||
static int init_sub_crq_irqs(struct ibmvnic_adapter *adapter)
|
||||
{
|
||||
struct device *dev = &adapter->vdev->dev;
|
||||
struct ibmvnic_sub_crq_queue *scrq;
|
||||
int i = 0, j = 0;
|
||||
int rc = 0;
|
||||
|
||||
for (i = 0; i < adapter->req_tx_queues; i++) {
|
||||
scrq = adapter->tx_scrq[i];
|
||||
scrq->irq = irq_create_mapping(NULL, scrq->hw_irq);
|
||||
|
||||
if (scrq->irq == NO_IRQ) {
|
||||
rc = -EINVAL;
|
||||
dev_err(dev, "Error mapping irq\n");
|
||||
goto req_tx_irq_failed;
|
||||
}
|
||||
|
||||
rc = request_irq(scrq->irq, ibmvnic_interrupt_tx,
|
||||
0, "ibmvnic_tx", scrq);
|
||||
|
||||
if (rc) {
|
||||
dev_err(dev, "Couldn't register tx irq 0x%x. rc=%d\n",
|
||||
scrq->irq, rc);
|
||||
irq_dispose_mapping(scrq->irq);
|
||||
goto req_rx_irq_failed;
|
||||
}
|
||||
}
|
||||
|
||||
for (i = 0; i < adapter->req_rx_queues; i++) {
|
||||
scrq = adapter->rx_scrq[i];
|
||||
scrq->irq = irq_create_mapping(NULL, scrq->hw_irq);
|
||||
if (scrq->irq == NO_IRQ) {
|
||||
rc = -EINVAL;
|
||||
dev_err(dev, "Error mapping irq\n");
|
||||
goto req_rx_irq_failed;
|
||||
}
|
||||
rc = request_irq(scrq->irq, ibmvnic_interrupt_rx,
|
||||
0, "ibmvnic_rx", scrq);
|
||||
if (rc) {
|
||||
dev_err(dev, "Couldn't register rx irq 0x%x. rc=%d\n",
|
||||
scrq->irq, rc);
|
||||
irq_dispose_mapping(scrq->irq);
|
||||
goto req_rx_irq_failed;
|
||||
}
|
||||
}
|
||||
return rc;
|
||||
|
||||
req_rx_irq_failed:
|
||||
for (j = 0; j < i; j++)
|
||||
free_irq(adapter->rx_scrq[j]->irq, adapter->rx_scrq[j]);
|
||||
irq_dispose_mapping(adapter->rx_scrq[j]->irq);
|
||||
i = adapter->req_tx_queues;
|
||||
req_tx_irq_failed:
|
||||
for (j = 0; j < i; j++)
|
||||
free_irq(adapter->tx_scrq[j]->irq, adapter->tx_scrq[j]);
|
||||
irq_dispose_mapping(adapter->rx_scrq[j]->irq);
|
||||
release_sub_crqs_no_irqs(adapter);
|
||||
return rc;
|
||||
}
|
||||
|
||||
static void init_sub_crqs(struct ibmvnic_adapter *adapter, int retry)
|
||||
{
|
||||
struct device *dev = &adapter->vdev->dev;
|
||||
|
@ -1406,8 +1478,7 @@ static void init_sub_crqs(struct ibmvnic_adapter *adapter, int retry)
|
|||
union ibmvnic_crq crq;
|
||||
int total_queues;
|
||||
int more = 0;
|
||||
int i, j;
|
||||
int rc;
|
||||
int i;
|
||||
|
||||
if (!retry) {
|
||||
/* Sub-CRQ entries are 32 byte long */
|
||||
|
@ -1486,13 +1557,6 @@ static void init_sub_crqs(struct ibmvnic_adapter *adapter, int retry)
|
|||
for (i = 0; i < adapter->req_tx_queues; i++) {
|
||||
adapter->tx_scrq[i] = allqueues[i];
|
||||
adapter->tx_scrq[i]->pool_index = i;
|
||||
rc = request_irq(adapter->tx_scrq[i]->irq, ibmvnic_interrupt_tx,
|
||||
0, "ibmvnic_tx", adapter->tx_scrq[i]);
|
||||
if (rc) {
|
||||
dev_err(dev, "Couldn't register tx irq 0x%x. rc=%d\n",
|
||||
adapter->tx_scrq[i]->irq, rc);
|
||||
goto req_tx_irq_failed;
|
||||
}
|
||||
}
|
||||
|
||||
adapter->rx_scrq = kcalloc(adapter->req_rx_queues,
|
||||
|
@ -1503,13 +1567,6 @@ static void init_sub_crqs(struct ibmvnic_adapter *adapter, int retry)
|
|||
for (i = 0; i < adapter->req_rx_queues; i++) {
|
||||
adapter->rx_scrq[i] = allqueues[i + adapter->req_tx_queues];
|
||||
adapter->rx_scrq[i]->scrq_num = i;
|
||||
rc = request_irq(adapter->rx_scrq[i]->irq, ibmvnic_interrupt_rx,
|
||||
0, "ibmvnic_rx", adapter->rx_scrq[i]);
|
||||
if (rc) {
|
||||
dev_err(dev, "Couldn't register rx irq 0x%x. rc=%d\n",
|
||||
adapter->rx_scrq[i]->irq, rc);
|
||||
goto req_rx_irq_failed;
|
||||
}
|
||||
}
|
||||
|
||||
memset(&crq, 0, sizeof(crq));
|
||||
|
@ -1562,15 +1619,6 @@ static void init_sub_crqs(struct ibmvnic_adapter *adapter, int retry)
|
|||
|
||||
return;
|
||||
|
||||
req_rx_irq_failed:
|
||||
for (j = 0; j < i; j++)
|
||||
free_irq(adapter->rx_scrq[j]->irq, adapter->rx_scrq[j]);
|
||||
i = adapter->req_tx_queues;
|
||||
req_tx_irq_failed:
|
||||
for (j = 0; j < i; j++)
|
||||
free_irq(adapter->tx_scrq[j]->irq, adapter->tx_scrq[j]);
|
||||
kfree(adapter->rx_scrq);
|
||||
adapter->rx_scrq = NULL;
|
||||
rx_failed:
|
||||
kfree(adapter->tx_scrq);
|
||||
adapter->tx_scrq = NULL;
|
||||
|
@ -2351,9 +2399,9 @@ static void handle_request_cap_rsp(union ibmvnic_crq *crq,
|
|||
*req_value,
|
||||
(long int)be32_to_cpu(crq->request_capability_rsp.
|
||||
number), name);
|
||||
release_sub_crqs(adapter);
|
||||
release_sub_crqs_no_irqs(adapter);
|
||||
*req_value = be32_to_cpu(crq->request_capability_rsp.number);
|
||||
complete(&adapter->init_done);
|
||||
init_sub_crqs(adapter, 1);
|
||||
return;
|
||||
default:
|
||||
dev_err(dev, "Error %d in request cap rsp\n",
|
||||
|
@ -2662,7 +2710,7 @@ static void handle_query_cap_rsp(union ibmvnic_crq *crq,
|
|||
|
||||
out:
|
||||
if (atomic_read(&adapter->running_cap_queries) == 0)
|
||||
complete(&adapter->init_done);
|
||||
init_sub_crqs(adapter, 0);
|
||||
/* We're done querying the capabilities, initialize sub-crqs */
|
||||
}
|
||||
|
||||
|
@ -3560,6 +3608,7 @@ static const struct file_operations ibmvnic_dump_ops = {
|
|||
|
||||
static int ibmvnic_probe(struct vio_dev *dev, const struct vio_device_id *id)
|
||||
{
|
||||
unsigned long timeout = msecs_to_jiffies(30000);
|
||||
struct ibmvnic_adapter *adapter;
|
||||
struct net_device *netdev;
|
||||
unsigned char *mac_addr_p;
|
||||
|
@ -3638,30 +3687,26 @@ static int ibmvnic_probe(struct vio_dev *dev, const struct vio_device_id *id)
|
|||
ibmvnic_send_crq_init(adapter);
|
||||
|
||||
init_completion(&adapter->init_done);
|
||||
wait_for_completion(&adapter->init_done);
|
||||
if (!wait_for_completion_timeout(&adapter->init_done, timeout))
|
||||
return 0;
|
||||
|
||||
do {
|
||||
adapter->renegotiate = false;
|
||||
|
||||
init_sub_crqs(adapter, 0);
|
||||
reinit_completion(&adapter->init_done);
|
||||
wait_for_completion(&adapter->init_done);
|
||||
|
||||
if (adapter->renegotiate) {
|
||||
release_sub_crqs(adapter);
|
||||
adapter->renegotiate = false;
|
||||
release_sub_crqs_no_irqs(adapter);
|
||||
send_cap_queries(adapter);
|
||||
|
||||
reinit_completion(&adapter->init_done);
|
||||
wait_for_completion(&adapter->init_done);
|
||||
if (!wait_for_completion_timeout(&adapter->init_done,
|
||||
timeout))
|
||||
return 0;
|
||||
}
|
||||
} while (adapter->renegotiate);
|
||||
|
||||
/* if init_sub_crqs is partially successful, retry */
|
||||
while (!adapter->tx_scrq || !adapter->rx_scrq) {
|
||||
init_sub_crqs(adapter, 1);
|
||||
|
||||
reinit_completion(&adapter->init_done);
|
||||
wait_for_completion(&adapter->init_done);
|
||||
rc = init_sub_crq_irqs(adapter);
|
||||
if (rc) {
|
||||
dev_err(&dev->dev, "failed to initialize sub crq irqs\n");
|
||||
goto free_debugfs;
|
||||
}
|
||||
|
||||
netdev->real_num_tx_queues = adapter->req_tx_queues;
|
||||
|
@ -3669,12 +3714,14 @@ static int ibmvnic_probe(struct vio_dev *dev, const struct vio_device_id *id)
|
|||
rc = register_netdev(netdev);
|
||||
if (rc) {
|
||||
dev_err(&dev->dev, "failed to register netdev rc=%d\n", rc);
|
||||
goto free_debugfs;
|
||||
goto free_sub_crqs;
|
||||
}
|
||||
dev_info(&dev->dev, "ibmvnic registered\n");
|
||||
|
||||
return 0;
|
||||
|
||||
free_sub_crqs:
|
||||
release_sub_crqs(adapter);
|
||||
free_debugfs:
|
||||
if (adapter->debugfs_dir && !IS_ERR(adapter->debugfs_dir))
|
||||
debugfs_remove_recursive(adapter->debugfs_dir);
|
||||
|
|
Loading…
Reference in a new issue