14d0e5007SSukumar Swaminathan /*
24d0e5007SSukumar Swaminathan * CDDL HEADER START
34d0e5007SSukumar Swaminathan *
44d0e5007SSukumar Swaminathan * The contents of this file are subject to the terms of the
54d0e5007SSukumar Swaminathan * Common Development and Distribution License (the "License").
64d0e5007SSukumar Swaminathan * You may not use this file except in compliance with the License.
74d0e5007SSukumar Swaminathan *
84d0e5007SSukumar Swaminathan * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
94d0e5007SSukumar Swaminathan * or http://www.opensolaris.org/os/licensing.
104d0e5007SSukumar Swaminathan * See the License for the specific language governing permissions
114d0e5007SSukumar Swaminathan * and limitations under the License.
124d0e5007SSukumar Swaminathan *
134d0e5007SSukumar Swaminathan * When distributing Covered Code, include this CDDL HEADER in each
144d0e5007SSukumar Swaminathan * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
154d0e5007SSukumar Swaminathan * If applicable, add the following below this CDDL HEADER, with the
164d0e5007SSukumar Swaminathan * fields enclosed by brackets "[]" replaced with your own identifying
174d0e5007SSukumar Swaminathan * information: Portions Copyright [yyyy] [name of copyright owner]
184d0e5007SSukumar Swaminathan *
194d0e5007SSukumar Swaminathan * CDDL HEADER END
204d0e5007SSukumar Swaminathan */
214d0e5007SSukumar Swaminathan
22*3abb112fSGarrett D'Amore /* Copyright © 2003-2011 Emulex. All rights reserved. */
234d0e5007SSukumar Swaminathan
244d0e5007SSukumar Swaminathan /*
254d0e5007SSukumar Swaminathan * Source file interrupt registration
264d0e5007SSukumar Swaminathan * and related helper functions
274d0e5007SSukumar Swaminathan */
284d0e5007SSukumar Swaminathan
294d0e5007SSukumar Swaminathan #include <oce_impl.h>
304d0e5007SSukumar Swaminathan
31*3abb112fSGarrett D'Amore
324d0e5007SSukumar Swaminathan static uint_t oce_isr(caddr_t arg1, caddr_t arg2);
334d0e5007SSukumar Swaminathan
344d0e5007SSukumar Swaminathan /*
354d0e5007SSukumar Swaminathan * top level function to setup interrupts
364d0e5007SSukumar Swaminathan *
374d0e5007SSukumar Swaminathan * dev - software handle to the device
384d0e5007SSukumar Swaminathan *
394d0e5007SSukumar Swaminathan * return DDI_SUCCESS => success, failure otherwise
404d0e5007SSukumar Swaminathan */
414d0e5007SSukumar Swaminathan int
oce_setup_intr(struct oce_dev * dev)424d0e5007SSukumar Swaminathan oce_setup_intr(struct oce_dev *dev)
434d0e5007SSukumar Swaminathan {
444d0e5007SSukumar Swaminathan int ret;
458d738d7dSSukumar Swaminathan int intr_types = 0;
465b9d3151SSukumar Swaminathan int navail = 0;
475b9d3151SSukumar Swaminathan int nsupported = 0;
485b9d3151SSukumar Swaminathan int min = 0;
495b9d3151SSukumar Swaminathan int nreqd = 0;
505b9d3151SSukumar Swaminathan int nallocd = 0;
514d0e5007SSukumar Swaminathan
528d738d7dSSukumar Swaminathan /* get supported intr types */
538d738d7dSSukumar Swaminathan ret = ddi_intr_get_supported_types(dev->dip, &intr_types);
548d738d7dSSukumar Swaminathan if (ret != DDI_SUCCESS) {
558d738d7dSSukumar Swaminathan oce_log(dev, CE_WARN, MOD_CONFIG, "%s",
568d738d7dSSukumar Swaminathan "Failed to retrieve intr types ");
578d738d7dSSukumar Swaminathan return (DDI_FAILURE);
584d0e5007SSukumar Swaminathan }
594d0e5007SSukumar Swaminathan
605b9d3151SSukumar Swaminathan retry_intr:
618d738d7dSSukumar Swaminathan if (intr_types & DDI_INTR_TYPE_MSIX) {
625b9d3151SSukumar Swaminathan dev->intr_type = DDI_INTR_TYPE_MSIX;
635b9d3151SSukumar Swaminathan /* one vector is shared by MCC and Tx */
645b9d3151SSukumar Swaminathan nreqd = dev->rx_rings + 1;
655b9d3151SSukumar Swaminathan min = OCE_MIN_VECTORS;
665b9d3151SSukumar Swaminathan } else if (intr_types & DDI_INTR_TYPE_FIXED) {
675b9d3151SSukumar Swaminathan dev->intr_type = DDI_INTR_TYPE_FIXED;
685b9d3151SSukumar Swaminathan nreqd = OCE_MIN_VECTORS;
695b9d3151SSukumar Swaminathan min = OCE_MIN_VECTORS;
708d738d7dSSukumar Swaminathan }
718d738d7dSSukumar Swaminathan
725b9d3151SSukumar Swaminathan ret = ddi_intr_get_nintrs(dev->dip, dev->intr_type, &nsupported);
735b9d3151SSukumar Swaminathan if (ret != DDI_SUCCESS) {
745b9d3151SSukumar Swaminathan oce_log(dev, CE_WARN, MOD_CONFIG,
755b9d3151SSukumar Swaminathan "Could not get nintrs:0x%d", ret);
765b9d3151SSukumar Swaminathan return (DDI_FAILURE);
778d738d7dSSukumar Swaminathan }
788d738d7dSSukumar Swaminathan
795b9d3151SSukumar Swaminathan /* get the number of vectors available */
805b9d3151SSukumar Swaminathan ret = ddi_intr_get_navail(dev->dip, dev->intr_type, &navail);
815b9d3151SSukumar Swaminathan if (ret != DDI_SUCCESS || navail < min) {
825b9d3151SSukumar Swaminathan oce_log(dev, CE_WARN, MOD_CONFIG,
835b9d3151SSukumar Swaminathan "Could not get msix vectors:0x%x",
845b9d3151SSukumar Swaminathan navail);
855b9d3151SSukumar Swaminathan return (DDI_FAILURE);
868d738d7dSSukumar Swaminathan }
875b9d3151SSukumar Swaminathan
885b9d3151SSukumar Swaminathan if (navail < min) {
895b9d3151SSukumar Swaminathan return (DDI_FAILURE);
904d0e5007SSukumar Swaminathan }
914d0e5007SSukumar Swaminathan
925b9d3151SSukumar Swaminathan /* if the requested number is more than available reset reqd */
935b9d3151SSukumar Swaminathan if (navail < nreqd) {
945b9d3151SSukumar Swaminathan nreqd = navail;
955b9d3151SSukumar Swaminathan }
965b9d3151SSukumar Swaminathan
975b9d3151SSukumar Swaminathan /* allocate htable */
985b9d3151SSukumar Swaminathan dev->hsize = nreqd * sizeof (ddi_intr_handle_t);
995b9d3151SSukumar Swaminathan dev->htable = kmem_zalloc(dev->hsize, KM_NOSLEEP);
1005b9d3151SSukumar Swaminathan
1015b9d3151SSukumar Swaminathan if (dev->htable == NULL)
1025b9d3151SSukumar Swaminathan return (DDI_FAILURE);
1035b9d3151SSukumar Swaminathan
1045b9d3151SSukumar Swaminathan nallocd = 0;
1055b9d3151SSukumar Swaminathan /* allocate interrupt handlers */
1065b9d3151SSukumar Swaminathan ret = ddi_intr_alloc(dev->dip, dev->htable, dev->intr_type,
1075b9d3151SSukumar Swaminathan 0, nreqd, &nallocd, DDI_INTR_ALLOC_NORMAL);
1085b9d3151SSukumar Swaminathan
1095b9d3151SSukumar Swaminathan if (ret != DDI_SUCCESS) {
1105b9d3151SSukumar Swaminathan goto fail_intr;
1115b9d3151SSukumar Swaminathan }
1125b9d3151SSukumar Swaminathan
1135b9d3151SSukumar Swaminathan dev->num_vectors = nallocd;
1145b9d3151SSukumar Swaminathan if (nallocd < min) {
1155b9d3151SSukumar Swaminathan goto fail_intr;
1165b9d3151SSukumar Swaminathan }
1175b9d3151SSukumar Swaminathan
1185b9d3151SSukumar Swaminathan /*
1195b9d3151SSukumar Swaminathan * get the interrupt priority. Assumption is that all handlers have
1205b9d3151SSukumar Swaminathan * equal priority
1215b9d3151SSukumar Swaminathan */
1225b9d3151SSukumar Swaminathan
1235b9d3151SSukumar Swaminathan ret = ddi_intr_get_pri(dev->htable[0], &dev->intr_pri);
1245b9d3151SSukumar Swaminathan
1255b9d3151SSukumar Swaminathan if (ret != DDI_SUCCESS) {
1265b9d3151SSukumar Swaminathan goto fail_intr;
1275b9d3151SSukumar Swaminathan }
1285b9d3151SSukumar Swaminathan
1295b9d3151SSukumar Swaminathan (void) ddi_intr_get_cap(dev->htable[0], &dev->intr_cap);
1305b9d3151SSukumar Swaminathan
1315b9d3151SSukumar Swaminathan if ((intr_types & DDI_INTR_TYPE_MSIX) && (nallocd > 1)) {
1325b9d3151SSukumar Swaminathan dev->rx_rings = nallocd - 1;
1335b9d3151SSukumar Swaminathan } else {
1345b9d3151SSukumar Swaminathan dev->rx_rings = 1;
1355b9d3151SSukumar Swaminathan }
1365b9d3151SSukumar Swaminathan
1375b9d3151SSukumar Swaminathan return (DDI_SUCCESS);
1385b9d3151SSukumar Swaminathan
1395b9d3151SSukumar Swaminathan fail_intr:
1405b9d3151SSukumar Swaminathan (void) oce_teardown_intr(dev);
1415b9d3151SSukumar Swaminathan if ((dev->intr_type == DDI_INTR_TYPE_MSIX) &&
1425b9d3151SSukumar Swaminathan (intr_types & DDI_INTR_TYPE_FIXED)) {
1435b9d3151SSukumar Swaminathan intr_types &= ~DDI_INTR_TYPE_MSIX;
1445b9d3151SSukumar Swaminathan oce_log(dev, CE_NOTE, MOD_CONFIG, "%s",
1455b9d3151SSukumar Swaminathan "Could not get MSIX vectors, trying for FIXED vectors");
1465b9d3151SSukumar Swaminathan goto retry_intr;
1475b9d3151SSukumar Swaminathan }
1484d0e5007SSukumar Swaminathan return (DDI_FAILURE);
1494d0e5007SSukumar Swaminathan }
1504d0e5007SSukumar Swaminathan
1514d0e5007SSukumar Swaminathan /*
1524d0e5007SSukumar Swaminathan * top level function to undo initialization in oce_setup_intr
1534d0e5007SSukumar Swaminathan *
1544d0e5007SSukumar Swaminathan * dev - software handle to the device
1554d0e5007SSukumar Swaminathan *
1564d0e5007SSukumar Swaminathan * return DDI_SUCCESS => success, failure otherwise
1574d0e5007SSukumar Swaminathan */
1584d0e5007SSukumar Swaminathan int
oce_teardown_intr(struct oce_dev * dev)1594d0e5007SSukumar Swaminathan oce_teardown_intr(struct oce_dev *dev)
1604d0e5007SSukumar Swaminathan {
1615b9d3151SSukumar Swaminathan int i;
1624d0e5007SSukumar Swaminathan
1635b9d3151SSukumar Swaminathan /* release handlers */
1645b9d3151SSukumar Swaminathan for (i = 0; i < dev->num_vectors; i++) {
1655b9d3151SSukumar Swaminathan (void) ddi_intr_free(dev->htable[i]);
1664d0e5007SSukumar Swaminathan }
1674d0e5007SSukumar Swaminathan
1685b9d3151SSukumar Swaminathan /* release htable */
1695b9d3151SSukumar Swaminathan kmem_free(dev->htable, dev->hsize);
1705b9d3151SSukumar Swaminathan dev->htable = NULL;
1715b9d3151SSukumar Swaminathan
1725b9d3151SSukumar Swaminathan return (DDI_SUCCESS);
1734d0e5007SSukumar Swaminathan }
1744d0e5007SSukumar Swaminathan
1754d0e5007SSukumar Swaminathan /*
1764d0e5007SSukumar Swaminathan * helper function to add ISR based on interrupt type
1774d0e5007SSukumar Swaminathan *
1784d0e5007SSukumar Swaminathan * dev - software handle to the device
1794d0e5007SSukumar Swaminathan *
1804d0e5007SSukumar Swaminathan * return DDI_SUCCESS => success, failure otherwise
1814d0e5007SSukumar Swaminathan */
1824d0e5007SSukumar Swaminathan int
oce_setup_handlers(struct oce_dev * dev)1834d0e5007SSukumar Swaminathan oce_setup_handlers(struct oce_dev *dev)
1844d0e5007SSukumar Swaminathan {
1855b9d3151SSukumar Swaminathan int i = 0;
1865b9d3151SSukumar Swaminathan int ret;
1875b9d3151SSukumar Swaminathan for (i = 0; i < dev->num_vectors; i++) {
1885b9d3151SSukumar Swaminathan ret = ddi_intr_add_handler(dev->htable[i], oce_isr,
1895b9d3151SSukumar Swaminathan (caddr_t)dev->eq[i], NULL);
1905b9d3151SSukumar Swaminathan if (ret != DDI_SUCCESS) {
1915b9d3151SSukumar Swaminathan oce_log(dev, CE_WARN, MOD_CONFIG, "%s",
1925b9d3151SSukumar Swaminathan "Failed to add interrupt handlers");
1935b9d3151SSukumar Swaminathan for (i--; i >= 0; i--) {
1945b9d3151SSukumar Swaminathan (void) ddi_intr_remove_handler(dev->htable[i]);
1955b9d3151SSukumar Swaminathan }
1965b9d3151SSukumar Swaminathan return (DDI_FAILURE);
1975b9d3151SSukumar Swaminathan }
1984d0e5007SSukumar Swaminathan }
1995b9d3151SSukumar Swaminathan return (DDI_SUCCESS);
2004d0e5007SSukumar Swaminathan }
2014d0e5007SSukumar Swaminathan
2024d0e5007SSukumar Swaminathan /*
2034d0e5007SSukumar Swaminathan * helper function to remove ISRs added in oce_setup_handlers
2044d0e5007SSukumar Swaminathan *
2054d0e5007SSukumar Swaminathan * dev - software handle to the device
2064d0e5007SSukumar Swaminathan *
2074d0e5007SSukumar Swaminathan * return DDI_SUCCESS => success, failure otherwise
2084d0e5007SSukumar Swaminathan */
2094d0e5007SSukumar Swaminathan void
oce_remove_handler(struct oce_dev * dev)2104d0e5007SSukumar Swaminathan oce_remove_handler(struct oce_dev *dev)
2114d0e5007SSukumar Swaminathan {
2125b9d3151SSukumar Swaminathan int nvec;
2135b9d3151SSukumar Swaminathan for (nvec = 0; nvec < dev->num_vectors; nvec++) {
2145b9d3151SSukumar Swaminathan (void) ddi_intr_remove_handler(dev->htable[nvec]);
2154d0e5007SSukumar Swaminathan }
2164d0e5007SSukumar Swaminathan }
2174d0e5007SSukumar Swaminathan
2184d0e5007SSukumar Swaminathan void
oce_chip_ei(struct oce_dev * dev)2194d0e5007SSukumar Swaminathan oce_chip_ei(struct oce_dev *dev)
2204d0e5007SSukumar Swaminathan {
2214d0e5007SSukumar Swaminathan uint32_t reg;
2224d0e5007SSukumar Swaminathan
2234d0e5007SSukumar Swaminathan reg = OCE_CFG_READ32(dev, PCICFG_INTR_CTRL);
2244d0e5007SSukumar Swaminathan reg |= HOSTINTR_MASK;
2254d0e5007SSukumar Swaminathan OCE_CFG_WRITE32(dev, PCICFG_INTR_CTRL, reg);
2264d0e5007SSukumar Swaminathan }
2274d0e5007SSukumar Swaminathan
2284d0e5007SSukumar Swaminathan /*
2294d0e5007SSukumar Swaminathan * function to enable interrupts
2304d0e5007SSukumar Swaminathan *
2314d0e5007SSukumar Swaminathan * dev - software handle to the device
2324d0e5007SSukumar Swaminathan *
2334d0e5007SSukumar Swaminathan * return DDI_SUCCESS => success, failure otherwise
2344d0e5007SSukumar Swaminathan */
2354d0e5007SSukumar Swaminathan void
oce_ei(struct oce_dev * dev)2364d0e5007SSukumar Swaminathan oce_ei(struct oce_dev *dev)
2374d0e5007SSukumar Swaminathan {
2384d0e5007SSukumar Swaminathan int i;
2394d0e5007SSukumar Swaminathan int ret;
2404d0e5007SSukumar Swaminathan
2414d0e5007SSukumar Swaminathan if (dev->intr_cap & DDI_INTR_FLAG_BLOCK) {
2424d0e5007SSukumar Swaminathan (void) ddi_intr_block_enable(dev->htable, dev->num_vectors);
2434d0e5007SSukumar Swaminathan } else {
2444d0e5007SSukumar Swaminathan
2454d0e5007SSukumar Swaminathan for (i = 0; i < dev->num_vectors; i++) {
2464d0e5007SSukumar Swaminathan ret = ddi_intr_enable(dev->htable[i]);
2474d0e5007SSukumar Swaminathan if (ret != DDI_SUCCESS) {
2484d0e5007SSukumar Swaminathan for (i--; i >= 0; i--) {
2494d0e5007SSukumar Swaminathan (void) ddi_intr_disable(dev->htable[i]);
2504d0e5007SSukumar Swaminathan }
2514d0e5007SSukumar Swaminathan }
2524d0e5007SSukumar Swaminathan }
2534d0e5007SSukumar Swaminathan }
2544d0e5007SSukumar Swaminathan oce_chip_ei(dev);
2554d0e5007SSukumar Swaminathan } /* oce_ei */
2564d0e5007SSukumar Swaminathan
2574d0e5007SSukumar Swaminathan void
oce_chip_di(struct oce_dev * dev)2584d0e5007SSukumar Swaminathan oce_chip_di(struct oce_dev *dev)
2594d0e5007SSukumar Swaminathan {
2604d0e5007SSukumar Swaminathan uint32_t reg;
2614d0e5007SSukumar Swaminathan
2624d0e5007SSukumar Swaminathan reg = OCE_CFG_READ32(dev, PCICFG_INTR_CTRL);
2634d0e5007SSukumar Swaminathan reg &= ~HOSTINTR_MASK;
2644d0e5007SSukumar Swaminathan OCE_CFG_WRITE32(dev, PCICFG_INTR_CTRL, reg);
2654d0e5007SSukumar Swaminathan }
2664d0e5007SSukumar Swaminathan
2674d0e5007SSukumar Swaminathan /*
2684d0e5007SSukumar Swaminathan * function to disable interrupts
2694d0e5007SSukumar Swaminathan *
2704d0e5007SSukumar Swaminathan * dev - software handle to the device
2714d0e5007SSukumar Swaminathan *
2724d0e5007SSukumar Swaminathan * return DDI_SUCCESS => success, failure otherwise
2734d0e5007SSukumar Swaminathan */
2744d0e5007SSukumar Swaminathan void
oce_di(struct oce_dev * dev)2754d0e5007SSukumar Swaminathan oce_di(struct oce_dev *dev)
2764d0e5007SSukumar Swaminathan {
2774d0e5007SSukumar Swaminathan int i;
2784d0e5007SSukumar Swaminathan int ret;
2794d0e5007SSukumar Swaminathan
2805b9d3151SSukumar Swaminathan oce_chip_di(dev);
2814d0e5007SSukumar Swaminathan if (dev->intr_cap & DDI_INTR_FLAG_BLOCK) {
2824d0e5007SSukumar Swaminathan (void) ddi_intr_block_disable(dev->htable, dev->num_vectors);
2834d0e5007SSukumar Swaminathan } else {
2844d0e5007SSukumar Swaminathan for (i = 0; i < dev->num_vectors; i++) {
2854d0e5007SSukumar Swaminathan ret = ddi_intr_disable(dev->htable[i]);
2864d0e5007SSukumar Swaminathan if (ret != DDI_SUCCESS) {
2874d0e5007SSukumar Swaminathan oce_log(dev, CE_WARN, MOD_CONFIG,
2884d0e5007SSukumar Swaminathan "Failed to disable interrupts 0x%x", ret);
2894d0e5007SSukumar Swaminathan }
2904d0e5007SSukumar Swaminathan }
2914d0e5007SSukumar Swaminathan }
292*3abb112fSGarrett D'Amore
2934d0e5007SSukumar Swaminathan } /* oce_di */
2944d0e5007SSukumar Swaminathan
2954d0e5007SSukumar Swaminathan /*
2964d0e5007SSukumar Swaminathan * command interrupt handler routine added to all vectors
2974d0e5007SSukumar Swaminathan *
2984d0e5007SSukumar Swaminathan * arg1 = callback data
2994d0e5007SSukumar Swaminathan * arg2 - callback data
3004d0e5007SSukumar Swaminathan *
3014d0e5007SSukumar Swaminathan * return DDI_INTR_CLAIMED => interrupt was claimed by the ISR
3024d0e5007SSukumar Swaminathan */
3034d0e5007SSukumar Swaminathan static uint_t
oce_isr(caddr_t arg1,caddr_t arg2)3044d0e5007SSukumar Swaminathan oce_isr(caddr_t arg1, caddr_t arg2)
3054d0e5007SSukumar Swaminathan {
3064d0e5007SSukumar Swaminathan struct oce_eq *eq;
3074d0e5007SSukumar Swaminathan struct oce_eqe *eqe;
3084d0e5007SSukumar Swaminathan uint16_t num_eqe = 0;
3094d0e5007SSukumar Swaminathan uint16_t cq_id;
3104d0e5007SSukumar Swaminathan struct oce_cq *cq;
3114d0e5007SSukumar Swaminathan struct oce_dev *dev;
3124d0e5007SSukumar Swaminathan
3134d0e5007SSukumar Swaminathan _NOTE(ARGUNUSED(arg2));
3144d0e5007SSukumar Swaminathan
3154d0e5007SSukumar Swaminathan eq = (struct oce_eq *)(void *)(arg1);
3164d0e5007SSukumar Swaminathan
3174d0e5007SSukumar Swaminathan dev = eq->parent;
3184d0e5007SSukumar Swaminathan
3194d0e5007SSukumar Swaminathan eqe = RING_GET_CONSUMER_ITEM_VA(eq->ring, struct oce_eqe);
3204d0e5007SSukumar Swaminathan
3214d0e5007SSukumar Swaminathan while (eqe->u0.dw0) {
3224d0e5007SSukumar Swaminathan
3234d0e5007SSukumar Swaminathan eqe->u0.dw0 = LE_32(eqe->u0.dw0);
3244d0e5007SSukumar Swaminathan
3254d0e5007SSukumar Swaminathan /* if not CQ then continue else flag an error */
3264d0e5007SSukumar Swaminathan if (EQ_MAJOR_CODE_COMPLETION != eqe->u0.s.major_code) {
3274d0e5007SSukumar Swaminathan oce_log(dev, CE_WARN, MOD_ISR,
3284d0e5007SSukumar Swaminathan "NOT a CQ event. 0x%x",
3294d0e5007SSukumar Swaminathan eqe->u0.s.major_code);
3304d0e5007SSukumar Swaminathan }
3314d0e5007SSukumar Swaminathan
3324d0e5007SSukumar Swaminathan /* get the cq from the eqe */
3335b9d3151SSukumar Swaminathan cq_id = eqe->u0.s.resource_id % OCE_MAX_CQ;
3344d0e5007SSukumar Swaminathan cq = dev->cq[cq_id];
3354d0e5007SSukumar Swaminathan
3364d0e5007SSukumar Swaminathan /* Call the completion handler */
3374d0e5007SSukumar Swaminathan (void) cq->cq_handler(cq->cb_arg);
3384d0e5007SSukumar Swaminathan
3394d0e5007SSukumar Swaminathan /* clear valid bit and progress eqe */
3404d0e5007SSukumar Swaminathan eqe->u0.dw0 = 0;
3414d0e5007SSukumar Swaminathan RING_GET(eq->ring, 1);
3424d0e5007SSukumar Swaminathan eqe = RING_GET_CONSUMER_ITEM_VA(eq->ring, struct oce_eqe);
3434d0e5007SSukumar Swaminathan num_eqe++;
3444d0e5007SSukumar Swaminathan } /* for all EQEs */
3454d0e5007SSukumar Swaminathan
3464d0e5007SSukumar Swaminathan /* ring the eq doorbell, signify that it's done processing */
3475b9d3151SSukumar Swaminathan oce_arm_eq(dev, eq->eq_id, num_eqe, B_TRUE, B_TRUE);
3484d0e5007SSukumar Swaminathan if (num_eqe > 0) {
3494d0e5007SSukumar Swaminathan return (DDI_INTR_CLAIMED);
3504d0e5007SSukumar Swaminathan } else {
3514d0e5007SSukumar Swaminathan return (DDI_INTR_UNCLAIMED);
3524d0e5007SSukumar Swaminathan }
3534d0e5007SSukumar Swaminathan } /* oce_msix_handler */
354