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Diffstat (limited to 'drivers/net/bnxt/bnxt_irq.c')
-rw-r--r--drivers/net/bnxt/bnxt_irq.c156
1 files changed, 156 insertions, 0 deletions
diff --git a/drivers/net/bnxt/bnxt_irq.c b/drivers/net/bnxt/bnxt_irq.c
new file mode 100644
index 00000000..e93585a0
--- /dev/null
+++ b/drivers/net/bnxt/bnxt_irq.c
@@ -0,0 +1,156 @@
+/*-
+ * BSD LICENSE
+ *
+ * Copyright(c) 2014-2015 Broadcom Corporation.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ * * Neither the name of Broadcom Corporation nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <inttypes.h>
+
+#include <rte_malloc.h>
+
+#include "bnxt.h"
+#include "bnxt_cpr.h"
+#include "bnxt_irq.h"
+#include "bnxt_ring.h"
+#include "hsi_struct_def_dpdk.h"
+
+/*
+ * Interrupts
+ */
+
+static void bnxt_int_handler(struct rte_intr_handle *handle __rte_unused,
+ void *param)
+{
+ struct rte_eth_dev *eth_dev = (struct rte_eth_dev *)param;
+ struct bnxt *bp = (struct bnxt *)eth_dev->data->dev_private;
+ struct bnxt_cp_ring_info *cpr = bp->def_cp_ring;
+ uint32_t raw_cons = cpr->cp_raw_cons;
+ uint32_t cons;
+ struct cmpl_base *cmp;
+
+ while (1) {
+ cons = RING_CMP(cpr->cp_ring_struct, raw_cons);
+ cmp = &cpr->cp_desc_ring[cons];
+
+ if (!CMP_VALID(cmp, raw_cons, cpr->cp_ring_struct))
+ break;
+
+ switch (CMP_TYPE(cmp)) {
+ case CMPL_BASE_TYPE_HWRM_ASYNC_EVENT:
+ /* Handle any async event */
+ bnxt_handle_async_event(bp, cmp);
+ break;
+ case CMPL_BASE_TYPE_HWRM_FWD_RESP:
+ /* Handle HWRM forwarded responses */
+ bnxt_handle_fwd_req(bp, cmp);
+ break;
+ default:
+ /* Ignore any other events */
+ break;
+ }
+ raw_cons = NEXT_RAW_CMP(raw_cons);
+ }
+ B_CP_DB_REARM(cpr, cpr->cp_raw_cons);
+}
+
+void bnxt_free_int(struct bnxt *bp)
+{
+ struct bnxt_irq *irq;
+
+ irq = bp->irq_tbl;
+ if (irq) {
+ if (irq->requested) {
+ rte_intr_disable(&bp->pdev->intr_handle);
+ rte_intr_callback_unregister(&bp->pdev->intr_handle,
+ irq->handler,
+ (void *)bp->eth_dev);
+ irq->requested = 0;
+ }
+ rte_free((void *)bp->irq_tbl);
+ bp->irq_tbl = NULL;
+ }
+}
+
+void bnxt_disable_int(struct bnxt *bp)
+{
+ struct bnxt_cp_ring_info *cpr = bp->def_cp_ring;
+
+ /* Only the default completion ring */
+ B_CP_DIS_DB(cpr, cpr->cp_raw_cons);
+}
+
+void bnxt_enable_int(struct bnxt *bp)
+{
+ struct bnxt_cp_ring_info *cpr = bp->def_cp_ring;
+
+ B_CP_DB_REARM(cpr, cpr->cp_raw_cons);
+}
+
+int bnxt_setup_int(struct bnxt *bp)
+{
+ uint16_t total_vecs;
+ const int len = sizeof(bp->irq_tbl[0].name);
+ int i, rc = 0;
+
+ /* DPDK host only supports 1 MSI-X vector */
+ total_vecs = 1;
+ bp->irq_tbl = rte_calloc("bnxt_irq_tbl", total_vecs,
+ sizeof(struct bnxt_irq), 0);
+ if (bp->irq_tbl) {
+ for (i = 0; i < total_vecs; i++) {
+ bp->irq_tbl[i].vector = i;
+ snprintf(bp->irq_tbl[i].name, len,
+ "%s-%d", bp->eth_dev->data->name, i);
+ bp->irq_tbl[i].handler = bnxt_int_handler;
+ }
+ } else {
+ rc = -ENOMEM;
+ goto setup_exit;
+ }
+ return 0;
+
+setup_exit:
+ RTE_LOG(ERR, PMD, "bnxt_irq_tbl setup failed");
+ return rc;
+}
+
+int bnxt_request_int(struct bnxt *bp)
+{
+ int rc = 0;
+
+ struct bnxt_irq *irq = bp->irq_tbl;
+
+ rte_intr_callback_register(&bp->pdev->intr_handle, irq->handler,
+ (void *)bp->eth_dev);
+ rte_intr_enable(&bp->pdev->intr_handle);
+
+ irq->requested = 1;
+ return rc;
+}