ice: add individual interrupt allocation

Currently interrupt allocations, depending on a feature are distributed
in batches. Also, after allocation there is a series of operations that
distributes per irq settings through that batch of interrupts.

Although driver does not yet support dynamic interrupt allocation, keep
allocated interrupts in a pool and add allocation abstraction logic to
make code more flexible. Keep per interrupt information in the
ice_q_vector structure, which yields ice_vsi::base_vector redundant.
Also, as a result there are a few functions that can be removed.
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Reviewed-by: Michal Swiatkowski <michal.swiatkowski@linux.intel.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Tested-by: Pucha Himasekhar Reddy <himasekharx.reddy.pucha@intel.com> (A Contingent worker at Intel)
Signed-off-by: Piotr Raczynski <piotr.raczynski@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>

drivers/net/ethernet/intel/ice/ice.h

@@ -105,10 +105,6 @@
 #define ICE_Q_WAIT_MAX_RETRY	(5 * ICE_Q_WAIT_RETRY_LIMIT)
 #define ICE_MAX_LG_RSS_QS	256
 #define ICE_RES_VALID_BIT	0x8000
-#define ICE_RES_MISC_VEC_ID	(ICE_RES_VALID_BIT - 1)
-#define ICE_RES_RDMA_VEC_ID	(ICE_RES_MISC_VEC_ID - 1)
-/* All VF control VSIs share the same IRQ, so assign a unique ID for them */
-#define ICE_RES_VF_CTRL_VEC_ID	(ICE_RES_RDMA_VEC_ID - 1)
 #define ICE_INVAL_Q_INDEX	0xffff
 
 #define ICE_MAX_RXQS_PER_TC		256	/* Used when setting VSI context per TC Rx queues */
@@ -349,7 +345,6 @@ struct ice_vsi {
 	u32 rx_buf_failed;
 	u32 rx_page_failed;
 	u16 num_q_vectors;
-	u16 base_vector;		/* IRQ base for OS reserved vectors */
 	enum ice_vsi_type type;
 	u16 vsi_num;			/* HW (absolute) index of this VSI */
 	u16 idx;			/* software index in pf->vsi[] */
@@ -480,6 +475,7 @@ struct ice_q_vector {
 	char name[ICE_INT_NAME_STR_LEN];
 
 	u16 total_events;	/* net_dim(): number of interrupts processed */
+	struct msi_map irq;
 } ____cacheline_internodealigned_in_smp;
 
 enum ice_pf_flags {
@@ -584,8 +580,7 @@ struct ice_pf {
 
 	u32 hw_csum_rx_error;
 	u32 oicr_err_reg;
-	u16 oicr_idx;		/* Other interrupt cause MSIX vector index */
-	u16 num_avail_sw_msix;	/* remaining MSIX SW vectors left unclaimed */
+	struct msi_map oicr_irq;	/* Other interrupt cause MSIX vector */
 	u16 max_pf_txqs;	/* Total Tx queues PF wide */
 	u16 max_pf_rxqs;	/* Total Rx queues PF wide */
 	u16 num_lan_msix;	/* Total MSIX vectors for base driver */
@@ -671,7 +666,7 @@ ice_irq_dynamic_ena(struct ice_hw *hw, struct ice_vsi *vsi,
 		    struct ice_q_vector *q_vector)
 {
 	u32 vector = (vsi && q_vector) ? q_vector->reg_idx :
-				((struct ice_pf *)hw->back)->oicr_idx;
+				((struct ice_pf *)hw->back)->oicr_irq.index;
 	int itr = ICE_ITR_NONE;
 	u32 val;
 

drivers/net/ethernet/intel/ice/ice_arfs.c

@@ -596,7 +596,7 @@ int ice_set_cpu_rx_rmap(struct ice_vsi *vsi)
 {
 	struct net_device *netdev;
 	struct ice_pf *pf;
-	int base_idx, i;
+	int i;
 
 	if (!vsi || vsi->type != ICE_VSI_PF)
 		return 0;
@@ -613,10 +613,9 @@ int ice_set_cpu_rx_rmap(struct ice_vsi *vsi)
 	if (unlikely(!netdev->rx_cpu_rmap))
 		return -EINVAL;
 
-	base_idx = vsi->base_vector;
 	ice_for_each_q_vector(vsi, i)
 		if (irq_cpu_rmap_add(netdev->rx_cpu_rmap,
-				     pci_irq_vector(pf->pdev, base_idx + i))) {
+				     vsi->q_vectors[i]->irq.virq)) {
 			ice_free_cpu_rx_rmap(vsi);
 			return -EINVAL;
 		}

drivers/net/ethernet/intel/ice/ice_base.c

@@ -103,10 +103,10 @@ static int ice_vsi_alloc_q_vector(struct ice_vsi *vsi, u16 v_idx)
 {
 	struct ice_pf *pf = vsi->back;
 	struct ice_q_vector *q_vector;
+	int err;
 
 	/* allocate q_vector */
-	q_vector = devm_kzalloc(ice_pf_to_dev(pf), sizeof(*q_vector),
-				GFP_KERNEL);
+	q_vector = kzalloc(sizeof(*q_vector), GFP_KERNEL);
 	if (!q_vector)
 		return -ENOMEM;
 
@@ -118,9 +118,34 @@ static int ice_vsi_alloc_q_vector(struct ice_vsi *vsi, u16 v_idx)
 	q_vector->rx.itr_mode = ITR_DYNAMIC;
 	q_vector->tx.type = ICE_TX_CONTAINER;
 	q_vector->rx.type = ICE_RX_CONTAINER;
+	q_vector->irq.index = -ENOENT;
 
-	if (vsi->type == ICE_VSI_VF)
+	if (vsi->type == ICE_VSI_VF) {
+		q_vector->reg_idx = ice_calc_vf_reg_idx(vsi->vf, q_vector);
 		goto out;
+	} else if (vsi->type == ICE_VSI_CTRL && vsi->vf) {
+		struct ice_vsi *ctrl_vsi = ice_get_vf_ctrl_vsi(pf, vsi);
+
+		if (ctrl_vsi) {
+			if (unlikely(!ctrl_vsi->q_vectors)) {
+				err = -ENOENT;
+				goto err_free_q_vector;
+			}
+
+			q_vector->irq = ctrl_vsi->q_vectors[0]->irq;
+			goto skip_alloc;
+		}
+	}
+
+	q_vector->irq = ice_alloc_irq(pf);
+	if (q_vector->irq.index < 0) {
+		err = -ENOMEM;
+		goto err_free_q_vector;
+	}
+
+skip_alloc:
+	q_vector->reg_idx = q_vector->irq.index;
+
 	/* only set affinity_mask if the CPU is online */
 	if (cpu_online(v_idx))
 		cpumask_set_cpu(v_idx, &q_vector->affinity_mask);
@@ -137,6 +162,11 @@ static int ice_vsi_alloc_q_vector(struct ice_vsi *vsi, u16 v_idx)
 	vsi->q_vectors[v_idx] = q_vector;
 
 	return 0;
+
+err_free_q_vector:
+	kfree(q_vector);
+
+	return err;
 }
 
 /**
@@ -168,7 +198,19 @@ static void ice_free_q_vector(struct ice_vsi *vsi, int v_idx)
 	if (vsi->netdev)
 		netif_napi_del(&q_vector->napi);
 
-	devm_kfree(dev, q_vector);
+	/* release MSIX interrupt if q_vector had interrupt allocated */
+	if (q_vector->irq.index < 0)
+		goto free_q_vector;
+
+	/* only free last VF ctrl vsi interrupt */
+	if (vsi->type == ICE_VSI_CTRL && vsi->vf &&
+	    ice_get_vf_ctrl_vsi(pf, vsi))
+		goto free_q_vector;
+
+	ice_free_irq(pf, q_vector->irq);
+
+free_q_vector:
+	kfree(q_vector);
 	vsi->q_vectors[v_idx] = NULL;
 }
 

drivers/net/ethernet/intel/ice/ice_ethtool.c

@@ -956,7 +956,7 @@ static u64 ice_intr_test(struct net_device *netdev)
 
 	netdev_info(netdev, "interrupt test\n");
 
-	wr32(&pf->hw, GLINT_DYN_CTL(pf->oicr_idx),
+	wr32(&pf->hw, GLINT_DYN_CTL(pf->oicr_irq.index),
 	     GLINT_DYN_CTL_SW_ITR_INDX_M |
 	     GLINT_DYN_CTL_INTENA_MSK_M |
 	     GLINT_DYN_CTL_SWINT_TRIG_M);

drivers/net/ethernet/intel/ice/ice_idc.c

@@ -229,38 +229,33 @@ void ice_get_qos_params(struct ice_pf *pf, struct iidc_qos_params *qos)
 EXPORT_SYMBOL_GPL(ice_get_qos_params);
 
 /**
- * ice_reserve_rdma_qvector - Reserve vector resources for RDMA driver
+ * ice_alloc_rdma_qvectors - Allocate vector resources for RDMA driver
  * @pf: board private structure to initialize
  */
-static int ice_reserve_rdma_qvector(struct ice_pf *pf)
+static int ice_alloc_rdma_qvectors(struct ice_pf *pf)
 {
 	if (ice_is_rdma_ena(pf)) {
-		int index, i;
-
-		index = ice_get_res(pf, pf->irq_tracker, pf->num_rdma_msix,
-				    ICE_RES_RDMA_VEC_ID);
-		if (index < 0)
-			return index;
+		int i;
 
 		pf->msix_entries = kcalloc(pf->num_rdma_msix,
 					   sizeof(*pf->msix_entries),
 						  GFP_KERNEL);
-		if (!pf->msix_entries) {
-			ice_free_res(pf->irq_tracker, pf->rdma_base_vector,
-				     ICE_RES_RDMA_VEC_ID);
+		if (!pf->msix_entries)
 			return -ENOMEM;
-		}
-
-		pf->num_avail_sw_msix -= pf->num_rdma_msix;
 
 		/* RDMA is the only user of pf->msix_entries array */
 		pf->rdma_base_vector = 0;
 
-		for (i = 0; i < pf->num_rdma_msix; i++, index++) {
+		for (i = 0; i < pf->num_rdma_msix; i++) {
 			struct msix_entry *entry = &pf->msix_entries[i];
+			struct msi_map map;
 
-			entry->entry = index;
-			entry->vector = pci_irq_vector(pf->pdev, index);
+			map = ice_alloc_irq(pf);
+			if (map.index < 0)
+				break;
+
+			entry->entry = map.index;
+			entry->vector = map.virq;
 		}
 	}
 	return 0;
@@ -272,15 +267,21 @@ static int ice_reserve_rdma_qvector(struct ice_pf *pf)
  */
 static void ice_free_rdma_qvector(struct ice_pf *pf)
 {
+	int i;
+
 	if (!pf->msix_entries)
 		return;
 
+	for (i = 0; i < pf->num_rdma_msix; i++) {
+		struct msi_map map;
+
+		map.index = pf->msix_entries[i].entry;
+		map.virq = pf->msix_entries[i].vector;
+		ice_free_irq(pf, map);
+	}
+
 	kfree(pf->msix_entries);
 	pf->msix_entries = NULL;
-
-	pf->num_avail_sw_msix -= pf->num_rdma_msix;
-	ice_free_res(pf->irq_tracker, pf->rdma_base_vector,
-		     ICE_RES_RDMA_VEC_ID);
 }
 
 /**
@@ -382,7 +383,7 @@ int ice_init_rdma(struct ice_pf *pf)
 	}
 
 	/* Reserve vector resources */
-	ret = ice_reserve_rdma_qvector(pf);
+	ret = ice_alloc_rdma_qvectors(pf);
 	if (ret < 0) {
 		dev_err(dev, "failed to reserve vectors for RDMA\n");
 		goto err_reserve_rdma_qvector;

drivers/net/ethernet/intel/ice/ice_irq.c

@@ -194,9 +194,53 @@ int ice_init_interrupt_scheme(struct ice_pf *pf)
 	}
 
 	/* populate SW interrupts pool with number of OS granted IRQs. */
-	pf->num_avail_sw_msix = (u16)vectors;
 	pf->irq_tracker->num_entries = (u16)vectors;
 	pf->irq_tracker->end = pf->irq_tracker->num_entries;
 
 	return 0;
 }
+
+/**
+ * ice_alloc_irq - Allocate new interrupt vector
+ * @pf: board private structure
+ *
+ * Allocate new interrupt vector for a given owner id.
+ * return struct msi_map with interrupt details and track
+ * allocated interrupt appropriately.
+ *
+ * This function mimics individual interrupt allocation,
+ * even interrupts are actually already allocated with
+ * pci_alloc_irq_vectors. Individual allocation helps
+ * to track interrupts and simplifies interrupt related
+ * handling.
+ *
+ * On failure, return map with negative .index. The caller
+ * is expected to check returned map index.
+ *
+ */
+struct msi_map ice_alloc_irq(struct ice_pf *pf)
+{
+	struct msi_map map = { .index = -ENOENT };
+	int entry;
+
+	entry = ice_get_res(pf, pf->irq_tracker);
+	if (entry < 0)
+		return map;
+
+	map.index = entry;
+	map.virq = pci_irq_vector(pf->pdev, map.index);
+
+	return map;
+}
+
+/**
+ * ice_free_irq - Free interrupt vector
+ * @pf: board private structure
+ * @map: map with interrupt details
+ *
+ * Remove allocated interrupt from the interrupt tracker
+ */
+void ice_free_irq(struct ice_pf *pf, struct msi_map map)
+{
+	ice_free_res(pf->irq_tracker, map.index);
+}

drivers/net/ethernet/intel/ice/ice_irq.h

@@ -7,4 +7,7 @@
 int ice_init_interrupt_scheme(struct ice_pf *pf);
 void ice_clear_interrupt_scheme(struct ice_pf *pf);
 
+struct msi_map ice_alloc_irq(struct ice_pf *pf);
+void ice_free_irq(struct ice_pf *pf, struct msi_map map);
+
 #endif

drivers/net/ethernet/intel/ice/ice_lib.c

@@ -1374,162 +1374,45 @@ static int ice_vsi_init(struct ice_vsi *vsi, u32 vsi_flags)
  * ice_free_res - free a block of resources
  * @res: pointer to the resource
  * @index: starting index previously returned by ice_get_res
- * @id: identifier to track owner
  *
  * Returns number of resources freed
  */
-int ice_free_res(struct ice_res_tracker *res, u16 index, u16 id)
+int ice_free_res(struct ice_res_tracker *res, u16 index)
 {
-	int count = 0;
-	int i;
-
 	if (!res || index >= res->end)
 		return -EINVAL;
 
-	id |= ICE_RES_VALID_BIT;
-	for (i = index; i < res->end && res->list[i] == id; i++) {
-		res->list[i] = 0;
-		count++;
-	}
-
-	return count;
-}
-
-/**
- * ice_search_res - Search the tracker for a block of resources
- * @res: pointer to the resource
- * @needed: size of the block needed
- * @id: identifier to track owner
- *
- * Returns the base item index of the block, or -ENOMEM for error
- */
-static int ice_search_res(struct ice_res_tracker *res, u16 needed, u16 id)
-{
-	u16 start = 0, end = 0;
-
-	if (needed > res->end)
-		return -ENOMEM;
-
-	id |= ICE_RES_VALID_BIT;
-
-	do {
-		/* skip already allocated entries */
-		if (res->list[end++] & ICE_RES_VALID_BIT) {
-			start = end;
-			if ((start + needed) > res->end)
-				break;
-		}
-
-		if (end == (start + needed)) {
-			int i = start;
-
-			/* there was enough, so assign it to the requestor */
-			while (i != end)
-				res->list[i++] = id;
-
-			return start;
-		}
-	} while (end < res->end);
-
-	return -ENOMEM;
-}
-
-/**
- * ice_get_free_res_count - Get free count from a resource tracker
- * @res: Resource tracker instance
- */
-static u16 ice_get_free_res_count(struct ice_res_tracker *res)
-{
-	u16 i, count = 0;
+	res->list[index] = 0;
 
-	for (i = 0; i < res->end; i++)
-		if (!(res->list[i] & ICE_RES_VALID_BIT))
-			count++;
-
-	return count;
+	return 0;
 }
 
 /**
- * ice_get_res - get a block of resources
+ * ice_get_res - get a resource from the tracker
  * @pf: board private structure
  * @res: pointer to the resource
- * @needed: size of the block needed
- * @id: identifier to track owner
  *
- * Returns the base item index of the block, or negative for error
+ * Returns the item index, or negative for error
  */
 int
-ice_get_res(struct ice_pf *pf, struct ice_res_tracker *res, u16 needed, u16 id)
+ice_get_res(struct ice_pf *pf, struct ice_res_tracker *res)
 {
-	if (!res || !pf)
-		return -EINVAL;
+	u16 i;
 
-	if (!needed || needed > res->num_entries || id >= ICE_RES_VALID_BIT) {
-		dev_err(ice_pf_to_dev(pf), "param err: needed=%d, num_entries = %d id=0x%04x\n",
-			needed, res->num_entries, id);
+	if (!res || !pf)
 		return -EINVAL;
-	}
-
-	return ice_search_res(res, needed, id);
-}
-
-/**
- * ice_vsi_setup_vector_base - Set up the base vector for the given VSI
- * @vsi: ptr to the VSI
- *
- * This should only be called after ice_vsi_alloc_def() which allocates the
- * corresponding SW VSI structure and initializes num_queue_pairs for the
- * newly allocated VSI.
- *
- * Returns 0 on success or negative on failure
- */
-static int ice_vsi_setup_vector_base(struct ice_vsi *vsi)
-{
-	struct ice_pf *pf = vsi->back;
-	u16 num_q_vectors, id;
-	struct device *dev;
-	int base;
 
-	dev = ice_pf_to_dev(pf);
-	/* SRIOV doesn't grab irq_tracker entries for each VSI */
-	if (vsi->type == ICE_VSI_VF)
-		return 0;
-	if (vsi->type == ICE_VSI_CHNL)
-		return 0;
-
-	if (vsi->base_vector) {
-		dev_dbg(dev, "VSI %d has non-zero base vector %d\n",
-			vsi->vsi_num, vsi->base_vector);
-		return -EEXIST;
-	}
-
-	num_q_vectors = vsi->num_q_vectors;
-	/* reserve slots from OS requested IRQs */
-	if (vsi->type == ICE_VSI_CTRL && vsi->vf) {
-		struct ice_vsi *ctrl_vsi = ice_get_vf_ctrl_vsi(pf, vsi);
-
-		/* reuse VF control VSI interrupt vector */
-		if (ctrl_vsi) {
-			vsi->base_vector = ctrl_vsi->base_vector;
-			return 0;
-		}
+	/* skip already allocated entries */
+	for (i = 0; i < res->end; i++)
+		if (!(res->list[i] & ICE_RES_VALID_BIT))
+			break;
 
-		id = ICE_RES_VF_CTRL_VEC_ID;
+	if (i < res->end) {
+		res->list[i] = ICE_RES_VALID_BIT;
+		return i;
 	} else {
-		id = vsi->idx;
-	}
-
-	base = ice_get_res(pf, pf->irq_tracker, num_q_vectors, id);
-	if (base < 0) {
-		dev_err(dev, "%d MSI-X interrupts available. %s %d failed to get %d MSI-X vectors\n",
-			ice_get_free_res_count(pf->irq_tracker),
-			ice_vsi_type_str(vsi->type), vsi->idx, num_q_vectors);
-		return -ENOENT;
+		return -ENOMEM;
 	}
-	vsi->base_vector = (u16)base;
-	pf->num_avail_sw_msix -= num_q_vectors;
-
-	return 0;
 }
 
 /**
@@ -2387,50 +2270,6 @@ static void ice_vsi_set_tc_cfg(struct ice_vsi *vsi)
 	ice_vsi_set_dcb_tc_cfg(vsi);
 }
 
-/**
- * ice_vsi_set_q_vectors_reg_idx - set the HW register index for all q_vectors
- * @vsi: VSI to set the q_vectors register index on
- */
-static int
-ice_vsi_set_q_vectors_reg_idx(struct ice_vsi *vsi)
-{
-	u16 i;
-
-	if (!vsi || !vsi->q_vectors)
-		return -EINVAL;
-
-	ice_for_each_q_vector(vsi, i) {
-		struct ice_q_vector *q_vector = vsi->q_vectors[i];
-
-		if (!q_vector) {
-			dev_err(ice_pf_to_dev(vsi->back), "Failed to set reg_idx on q_vector %d VSI %d\n",
-				i, vsi->vsi_num);
-			goto clear_reg_idx;
-		}
-
-		if (vsi->type == ICE_VSI_VF) {
-			struct ice_vf *vf = vsi->vf;
-
-			q_vector->reg_idx = ice_calc_vf_reg_idx(vf, q_vector);
-		} else {
-			q_vector->reg_idx =
-				q_vector->v_idx + vsi->base_vector;
-		}
-	}
-
-	return 0;
-
-clear_reg_idx:
-	ice_for_each_q_vector(vsi, i) {
-		struct ice_q_vector *q_vector = vsi->q_vectors[i];
-
-		if (q_vector)
-			q_vector->reg_idx = 0;
-	}
-
-	return -EINVAL;
-}
-
 /**
  * ice_cfg_sw_lldp - Config switch rules for LLDP packet handling
  * @vsi: the VSI being configured
@@ -2675,14 +2514,6 @@ ice_vsi_cfg_def(struct ice_vsi *vsi, struct ice_vsi_cfg_params *params)
 		if (ret)
 			goto unroll_vsi_init;
 
-		ret = ice_vsi_setup_vector_base(vsi);
-		if (ret)
-			goto unroll_alloc_q_vector;
-
-		ret = ice_vsi_set_q_vectors_reg_idx(vsi);
-		if (ret)
-			goto unroll_vector_base;
-
 		ret = ice_vsi_alloc_rings(vsi);
 		if (ret)
 			goto unroll_vector_base;
@@ -2733,10 +2564,6 @@ ice_vsi_cfg_def(struct ice_vsi *vsi, struct ice_vsi_cfg_params *params)
 		if (ret)
 			goto unroll_alloc_q_vector;
 
-		ret = ice_vsi_set_q_vectors_reg_idx(vsi);
-		if (ret)
-			goto unroll_vector_base;
-
 		ret = ice_vsi_alloc_ring_stats(vsi);
 		if (ret)
 			goto unroll_vector_base;
@@ -2769,8 +2596,6 @@ ice_vsi_cfg_def(struct ice_vsi *vsi, struct ice_vsi_cfg_params *params)
 
 unroll_vector_base:
 	/* reclaim SW interrupts back to the common pool */
-	ice_free_res(pf->irq_tracker, vsi->base_vector, vsi->idx);
-	pf->num_avail_sw_msix += vsi->num_q_vectors;
 unroll_alloc_q_vector:
 	ice_vsi_free_q_vectors(vsi);
 unroll_vsi_init:
@@ -2862,20 +2687,6 @@ void ice_vsi_decfg(struct ice_vsi *vsi)
 	 * many interrupts each VF needs. SR-IOV MSIX resources are also
 	 * cleared in the same manner.
 	 */
-	if (vsi->type == ICE_VSI_CTRL && vsi->vf) {
-		struct ice_vsi *ctrl_vsi = ice_get_vf_ctrl_vsi(pf, vsi);
-
-		if (!ctrl_vsi) {
-			ice_free_res(pf->irq_tracker, vsi->base_vector,
-				     ICE_RES_VF_CTRL_VEC_ID);
-			pf->num_avail_sw_msix += vsi->num_q_vectors;
-		}
-	} else if (vsi->type != ICE_VSI_VF) {
-		/* reclaim SW interrupts back to the common pool */
-		ice_free_res(pf->irq_tracker, vsi->base_vector, vsi->idx);
-		pf->num_avail_sw_msix += vsi->num_q_vectors;
-		vsi->base_vector = 0;
-	}
 
 	if (vsi->type == ICE_VSI_VF &&
 	    vsi->agg_node && vsi->agg_node->valid)
@@ -2992,7 +2803,6 @@ static void ice_vsi_release_msix(struct ice_vsi *vsi)
 void ice_vsi_free_irq(struct ice_vsi *vsi)
 {
 	struct ice_pf *pf = vsi->back;
-	int base = vsi->base_vector;
 	int i;
 
 	if (!vsi->q_vectors || !vsi->irqs_ready)
@@ -3006,10 +2816,9 @@ void ice_vsi_free_irq(struct ice_vsi *vsi)
 	ice_free_cpu_rx_rmap(vsi);
 
 	ice_for_each_q_vector(vsi, i) {
-		u16 vector = i + base;
 		int irq_num;
 
-		irq_num = pci_irq_vector(pf->pdev, vector);
+		irq_num = vsi->q_vectors[i]->irq.virq;
 
 		/* free only the irqs that were actually requested */
 		if (!vsi->q_vectors[i] ||
@@ -3141,7 +2950,6 @@ void ice_dis_vsi(struct ice_vsi *vsi, bool locked)
  */
 void ice_vsi_dis_irq(struct ice_vsi *vsi)
 {
-	int base = vsi->base_vector;
 	struct ice_pf *pf = vsi->back;
 	struct ice_hw *hw = &pf->hw;
 	u32 val;
@@ -3188,7 +2996,7 @@ void ice_vsi_dis_irq(struct ice_vsi *vsi)
 		return;
 
 	ice_for_each_q_vector(vsi, i)
-		synchronize_irq(pci_irq_vector(pf->pdev, i + base));
+		synchronize_irq(vsi->q_vectors[i]->irq.virq);
 }
 
 /**

drivers/net/ethernet/intel/ice/ice_lib.h

@@ -104,10 +104,10 @@ int ice_ena_vsi(struct ice_vsi *vsi, bool locked);
 void ice_vsi_decfg(struct ice_vsi *vsi);
 void ice_dis_vsi(struct ice_vsi *vsi, bool locked);
 
-int ice_free_res(struct ice_res_tracker *res, u16 index, u16 id);
+int ice_free_res(struct ice_res_tracker *res, u16 index);
 
 int
-ice_get_res(struct ice_pf *pf, struct ice_res_tracker *res, u16 needed, u16 id);
+ice_get_res(struct ice_pf *pf, struct ice_res_tracker *res);
 
 int ice_vsi_rebuild(struct ice_vsi *vsi, u32 vsi_flags);
 int ice_vsi_cfg(struct ice_vsi *vsi, struct ice_vsi_cfg_params *params);

drivers/net/ethernet/intel/ice/ice_main.c

@@ -2490,7 +2490,6 @@ static int ice_vsi_req_irq_msix(struct ice_vsi *vsi, char *basename)
 {
 	int q_vectors = vsi->num_q_vectors;
 	struct ice_pf *pf = vsi->back;
-	int base = vsi->base_vector;
 	struct device *dev;
 	int rx_int_idx = 0;
 	int tx_int_idx = 0;
@@ -2501,7 +2500,7 @@ static int ice_vsi_req_irq_msix(struct ice_vsi *vsi, char *basename)
 	for (vector = 0; vector < q_vectors; vector++) {
 		struct ice_q_vector *q_vector = vsi->q_vectors[vector];
 
-		irq_num = pci_irq_vector(pf->pdev, base + vector);
+		irq_num = q_vector->irq.virq;
 
 		if (q_vector->tx.tx_ring && q_vector->rx.rx_ring) {
 			snprintf(q_vector->name, sizeof(q_vector->name) - 1,
@@ -2555,9 +2554,8 @@ static int ice_vsi_req_irq_msix(struct ice_vsi *vsi, char *basename)
 	return 0;
 
 free_q_irqs:
-	while (vector) {
-		vector--;
-		irq_num = pci_irq_vector(pf->pdev, base + vector);
+	while (vector--) {
+		irq_num = vsi->q_vectors[vector]->irq.virq;
 		if (!IS_ENABLED(CONFIG_RFS_ACCEL))
 			irq_set_affinity_notifier(irq_num, NULL);
 		irq_set_affinity_hint(irq_num, NULL);
@@ -3047,7 +3045,7 @@ static void ice_ena_misc_vector(struct ice_pf *pf)
 	wr32(hw, PFINT_OICR_ENA, val);
 
 	/* SW_ITR_IDX = 0, but don't change INTENA */
-	wr32(hw, GLINT_DYN_CTL(pf->oicr_idx),
+	wr32(hw, GLINT_DYN_CTL(pf->oicr_irq.index),
 	     GLINT_DYN_CTL_SW_ITR_INDX_M | GLINT_DYN_CTL_INTENA_MSK_M);
 }
 
@@ -3234,7 +3232,7 @@ static void ice_dis_ctrlq_interrupts(struct ice_hw *hw)
  */
 static void ice_free_irq_msix_misc(struct ice_pf *pf)
 {
-	int misc_irq_num = pci_irq_vector(pf->pdev, pf->oicr_idx);
+	int misc_irq_num = pf->oicr_irq.virq;
 	struct ice_hw *hw = &pf->hw;
 
 	ice_dis_ctrlq_interrupts(hw);
@@ -3246,8 +3244,7 @@ static void ice_free_irq_msix_misc(struct ice_pf *pf)
 	synchronize_irq(misc_irq_num);
 	devm_free_irq(ice_pf_to_dev(pf), misc_irq_num, pf);
 
-	pf->num_avail_sw_msix += 1;
-	ice_free_res(pf->irq_tracker, pf->oicr_idx, ICE_RES_MISC_VEC_ID);
+	ice_free_irq(pf, pf->oicr_irq);
 }
 
 /**
@@ -3293,7 +3290,8 @@ static int ice_req_irq_msix_misc(struct ice_pf *pf)
 {
 	struct device *dev = ice_pf_to_dev(pf);
 	struct ice_hw *hw = &pf->hw;
-	int oicr_idx, err = 0;
+	struct msi_map oicr_irq;
+	int err = 0;
 
 	if (!pf->int_name[0])
 		snprintf(pf->int_name, sizeof(pf->int_name) - 1, "%s-%s:misc",
@@ -3307,30 +3305,26 @@ static int ice_req_irq_msix_misc(struct ice_pf *pf)
 		goto skip_req_irq;
 
 	/* reserve one vector in irq_tracker for misc interrupts */
-	oicr_idx = ice_get_res(pf, pf->irq_tracker, 1, ICE_RES_MISC_VEC_ID);
-	if (oicr_idx < 0)
-		return oicr_idx;
-
-	pf->num_avail_sw_msix -= 1;
-	pf->oicr_idx = (u16)oicr_idx;
-
-	err = devm_request_threaded_irq(dev,
-					pci_irq_vector(pf->pdev, pf->oicr_idx),
-					ice_misc_intr, ice_misc_intr_thread_fn,
-					0, pf->int_name, pf);
+	oicr_irq = ice_alloc_irq(pf);
+	if (oicr_irq.index < 0)
+		return oicr_irq.index;
+
+	pf->oicr_irq = oicr_irq;
+	err = devm_request_threaded_irq(dev, pf->oicr_irq.virq, ice_misc_intr,
+					ice_misc_intr_thread_fn, 0,
+					pf->int_name, pf);
 	if (err) {
 		dev_err(dev, "devm_request_threaded_irq for %s failed: %d\n",
 			pf->int_name, err);
-		ice_free_res(pf->irq_tracker, 1, ICE_RES_MISC_VEC_ID);
-		pf->num_avail_sw_msix += 1;
+		ice_free_irq(pf, pf->oicr_irq);
 		return err;
 	}
 
 skip_req_irq:
 	ice_ena_misc_vector(pf);
 
-	ice_ena_ctrlq_interrupts(hw, pf->oicr_idx);
-	wr32(hw, GLINT_ITR(ICE_RX_ITR, pf->oicr_idx),
+	ice_ena_ctrlq_interrupts(hw, pf->oicr_irq.index);
+	wr32(hw, GLINT_ITR(ICE_RX_ITR, pf->oicr_irq.index),
 	     ITR_REG_ALIGN(ICE_ITR_8K) >> ICE_ITR_GRAN_S);
 
 	ice_flush(hw);

drivers/net/ethernet/intel/ice/ice_ptp.c

@@ -911,7 +911,7 @@ ice_ptp_release_tx_tracker(struct ice_pf *pf, struct ice_ptp_tx *tx)
 	spin_unlock(&tx->lock);
 
 	/* wait for potentially outstanding interrupt to complete */
-	synchronize_irq(pci_irq_vector(pf->pdev, pf->oicr_idx));
+	synchronize_irq(pf->oicr_irq.virq);
 
 	ice_ptp_flush_tx_tracker(pf, tx);
 

drivers/net/ethernet/intel/ice/ice_sriov.c

@@ -835,7 +835,7 @@ static int ice_ena_vfs(struct ice_pf *pf, u16 num_vfs)
 	int ret;
 
 	/* Disable global interrupt 0 so we don't try to handle the VFLR. */
-	wr32(hw, GLINT_DYN_CTL(pf->oicr_idx),
+	wr32(hw, GLINT_DYN_CTL(pf->oicr_irq.index),
 	     ICE_ITR_NONE << GLINT_DYN_CTL_ITR_INDX_S);
 	set_bit(ICE_OICR_INTR_DIS, pf->state);
 	ice_flush(hw);

drivers/net/ethernet/intel/ice/ice_xsk.c

@@ -90,7 +90,6 @@ ice_qvec_dis_irq(struct ice_vsi *vsi, struct ice_rx_ring *rx_ring,
 {
 	struct ice_pf *pf = vsi->back;
 	struct ice_hw *hw = &pf->hw;
-	int base = vsi->base_vector;
 	u16 reg;
 	u32 val;
 
@@ -103,11 +102,9 @@ ice_qvec_dis_irq(struct ice_vsi *vsi, struct ice_rx_ring *rx_ring,
 	wr32(hw, QINT_RQCTL(reg), val);
 
 	if (q_vector) {
-		u16 v_idx = q_vector->v_idx;
-
 		wr32(hw, GLINT_DYN_CTL(q_vector->reg_idx), 0);
 		ice_flush(hw);
-		synchronize_irq(pci_irq_vector(pf->pdev, v_idx + base));
+		synchronize_irq(q_vector->irq.virq);
 	}
 }