qlcnic: add interrupt diagnostic test
Interrupt test (offline) added in ethtool self test.
Register a temporary interrupt handler and then send command to fw
to raise an interrupt.
Signed-off-by: Sucheta Chakraborty <sucheta.chakraborty@qlogic.com>
Signed-off-by: Amit Kumar Salecha <amit.salecha@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/qlcnic/qlcnic_main.c b/drivers/net/qlcnic/qlcnic_main.c
index 7259adc..a8b0712 100644
--- a/drivers/net/qlcnic/qlcnic_main.c
+++ b/drivers/net/qlcnic/qlcnic_main.c
@@ -88,6 +88,7 @@
static void qlcnic_clr_all_drv_state(struct qlcnic_adapter *adapter);
static int qlcnic_can_start_firmware(struct qlcnic_adapter *adapter);
+static irqreturn_t qlcnic_tmp_intr(int irq, void *data);
static irqreturn_t qlcnic_intr(int irq, void *data);
static irqreturn_t qlcnic_msi_intr(int irq, void *data);
static irqreturn_t qlcnic_msix_intr(int irq, void *data);
@@ -720,13 +721,20 @@
struct net_device *netdev = adapter->netdev;
struct qlcnic_recv_context *recv_ctx = &adapter->recv_ctx;
- if (adapter->flags & QLCNIC_MSIX_ENABLED)
- handler = qlcnic_msix_intr;
- else if (adapter->flags & QLCNIC_MSI_ENABLED)
- handler = qlcnic_msi_intr;
- else {
- flags |= IRQF_SHARED;
- handler = qlcnic_intr;
+ if (adapter->diag_test == QLCNIC_INTERRUPT_TEST) {
+ handler = qlcnic_tmp_intr;
+ if (!QLCNIC_IS_MSI_FAMILY(adapter))
+ flags |= IRQF_SHARED;
+
+ } else {
+ if (adapter->flags & QLCNIC_MSIX_ENABLED)
+ handler = qlcnic_msix_intr;
+ else if (adapter->flags & QLCNIC_MSI_ENABLED)
+ handler = qlcnic_msi_intr;
+ else {
+ flags |= IRQF_SHARED;
+ handler = qlcnic_intr;
+ }
}
adapter->irq = netdev->irq;
@@ -923,6 +931,60 @@
adapter->is_up = 0;
}
+void qlcnic_diag_free_res(struct net_device *netdev, int max_sds_rings)
+{
+ struct qlcnic_adapter *adapter = netdev_priv(netdev);
+ struct qlcnic_host_sds_ring *sds_ring;
+ int ring;
+
+ for (ring = 0; ring < adapter->max_sds_rings; ring++) {
+ sds_ring = &adapter->recv_ctx.sds_rings[ring];
+ qlcnic_disable_int(sds_ring);
+ }
+
+ qlcnic_detach(adapter);
+
+ adapter->diag_test = 0;
+ adapter->max_sds_rings = max_sds_rings;
+
+ if (qlcnic_attach(adapter))
+ return;
+
+ if (netif_running(netdev))
+ __qlcnic_up(adapter, netdev);
+
+ netif_device_attach(netdev);
+}
+
+int qlcnic_diag_alloc_res(struct net_device *netdev, int test)
+{
+ struct qlcnic_adapter *adapter = netdev_priv(netdev);
+ struct qlcnic_host_sds_ring *sds_ring;
+ int ring;
+ int ret;
+
+ netif_device_detach(netdev);
+
+ if (netif_running(netdev))
+ __qlcnic_down(adapter, netdev);
+
+ qlcnic_detach(adapter);
+
+ adapter->max_sds_rings = 1;
+ adapter->diag_test = test;
+
+ ret = qlcnic_attach(adapter);
+ if (ret)
+ return ret;
+
+ for (ring = 0; ring < adapter->max_sds_rings; ring++) {
+ sds_ring = &adapter->recv_ctx.sds_rings[ring];
+ qlcnic_enable_int(sds_ring);
+ }
+
+ return 0;
+}
+
int
qlcnic_reset_context(struct qlcnic_adapter *adapter)
{
@@ -1689,10 +1751,8 @@
return stats;
}
-static irqreturn_t qlcnic_intr(int irq, void *data)
+static irqreturn_t qlcnic_clear_legacy_intr(struct qlcnic_adapter *adapter)
{
- struct qlcnic_host_sds_ring *sds_ring = data;
- struct qlcnic_adapter *adapter = sds_ring->adapter;
u32 status;
status = readl(adapter->isr_int_vec);
@@ -1710,6 +1770,38 @@
readl(adapter->isr_int_vec);
readl(adapter->isr_int_vec);
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t qlcnic_tmp_intr(int irq, void *data)
+{
+ struct qlcnic_host_sds_ring *sds_ring = data;
+ struct qlcnic_adapter *adapter = sds_ring->adapter;
+
+ if (adapter->flags & QLCNIC_MSIX_ENABLED)
+ goto done;
+ else if (adapter->flags & QLCNIC_MSI_ENABLED) {
+ writel(0xffffffff, adapter->tgt_status_reg);
+ goto done;
+ }
+
+ if (qlcnic_clear_legacy_intr(adapter) == IRQ_NONE)
+ return IRQ_NONE;
+
+done:
+ adapter->diag_cnt++;
+ qlcnic_enable_int(sds_ring);
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t qlcnic_intr(int irq, void *data)
+{
+ struct qlcnic_host_sds_ring *sds_ring = data;
+ struct qlcnic_adapter *adapter = sds_ring->adapter;
+
+ if (qlcnic_clear_legacy_intr(adapter) == IRQ_NONE)
+ return IRQ_NONE;
+
napi_schedule(&sds_ring->napi);
return IRQ_HANDLED;