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Message-ID: <20241114122009.97416-5-michal.swiatkowski@linux.intel.com>
Date: Thu, 14 Nov 2024 13:18:36 +0100
From: Michal Swiatkowski <michal.swiatkowski@...ux.intel.com>
To: intel-wired-lan@...ts.osuosl.org
Cc: netdev@...r.kernel.org,
pawel.chmielewski@...el.com,
sridhar.samudrala@...el.com,
jacob.e.keller@...el.com,
pio.raczynski@...il.com,
konrad.knitter@...el.com,
marcin.szycik@...el.com,
wojciech.drewek@...el.com,
nex.sw.ncis.nat.hpm.dev@...el.com,
przemyslaw.kitszel@...el.com,
jiri@...nulli.us,
horms@...nel.org,
David.Laight@...LAB.COM,
pmenzel@...gen.mpg.de,
mschmidt@...hat.com,
rafal.romanowski@...el.com
Subject: [PATCH 4/8] ice, irdma: move interrupts code to irdma
Move responsibility of MSI-X requesting for RDMA feature from ice driver
to irdma driver. It is done to allow simple fallback when there is not
enough MSI-X available.
Change amount of MSI-X used for control from 4 to 1, as it isn't needed
to have more than one MSI-X for this purpose.
Reviewed-by: Jacob Keller <jacob.e.keller@...el.com>
Signed-off-by: Michal Swiatkowski <michal.swiatkowski@...ux.intel.com>
---
drivers/infiniband/hw/irdma/hw.c | 2 -
drivers/infiniband/hw/irdma/main.c | 46 ++++++++++++++++-
drivers/infiniband/hw/irdma/main.h | 3 ++
drivers/net/ethernet/intel/ice/ice.h | 1 -
drivers/net/ethernet/intel/ice/ice_idc.c | 64 ++++++------------------
drivers/net/ethernet/intel/ice/ice_irq.c | 3 +-
include/linux/net/intel/iidc.h | 2 +
7 files changed, 65 insertions(+), 56 deletions(-)
diff --git a/drivers/infiniband/hw/irdma/hw.c b/drivers/infiniband/hw/irdma/hw.c
index ad50b77282f8..69ce1862eabe 100644
--- a/drivers/infiniband/hw/irdma/hw.c
+++ b/drivers/infiniband/hw/irdma/hw.c
@@ -498,8 +498,6 @@ static int irdma_save_msix_info(struct irdma_pci_f *rf)
iw_qvlist->num_vectors = rf->msix_count;
if (rf->msix_count <= num_online_cpus())
rf->msix_shared = true;
- else if (rf->msix_count > num_online_cpus() + 1)
- rf->msix_count = num_online_cpus() + 1;
pmsix = rf->msix_entries;
for (i = 0, ceq_idx = 0; i < rf->msix_count; i++, iw_qvinfo++) {
diff --git a/drivers/infiniband/hw/irdma/main.c b/drivers/infiniband/hw/irdma/main.c
index 3f13200ff71b..1ee8969595d3 100644
--- a/drivers/infiniband/hw/irdma/main.c
+++ b/drivers/infiniband/hw/irdma/main.c
@@ -206,6 +206,43 @@ static void irdma_lan_unregister_qset(struct irdma_sc_vsi *vsi,
ibdev_dbg(&iwdev->ibdev, "WS: LAN free_res for rdma qset failed.\n");
}
+static int irdma_init_interrupts(struct irdma_pci_f *rf, struct ice_pf *pf)
+{
+ int i;
+
+ rf->msix_count = num_online_cpus() + IRDMA_NUM_AEQ_MSIX;
+ rf->msix_entries = kcalloc(rf->msix_count, sizeof(*rf->msix_entries),
+ GFP_KERNEL);
+ if (!rf->msix_entries)
+ return -ENOMEM;
+
+ for (i = 0; i < rf->msix_count; i++)
+ if (ice_alloc_rdma_qvector(pf, &rf->msix_entries[i]))
+ break;
+
+ if (i < IRDMA_MIN_MSIX) {
+ for (; i > 0; i--)
+ ice_free_rdma_qvector(pf, &rf->msix_entries[i]);
+
+ kfree(rf->msix_entries);
+ return -ENOMEM;
+ }
+
+ rf->msix_count = i;
+
+ return 0;
+}
+
+static void irdma_deinit_interrupts(struct irdma_pci_f *rf, struct ice_pf *pf)
+{
+ int i;
+
+ for (i = 0; i < rf->msix_count; i++)
+ ice_free_rdma_qvector(pf, &rf->msix_entries[i]);
+
+ kfree(rf->msix_entries);
+}
+
static void irdma_remove(struct auxiliary_device *aux_dev)
{
struct iidc_auxiliary_dev *iidc_adev = container_of(aux_dev,
@@ -216,6 +253,7 @@ static void irdma_remove(struct auxiliary_device *aux_dev)
irdma_ib_unregister_device(iwdev);
ice_rdma_update_vsi_filter(pf, iwdev->vsi_num, false);
+ irdma_deinit_interrupts(iwdev->rf, pf);
pr_debug("INIT: Gen2 PF[%d] device remove success\n", PCI_FUNC(pf->pdev->devfn));
}
@@ -230,9 +268,7 @@ static void irdma_fill_device_info(struct irdma_device *iwdev, struct ice_pf *pf
rf->gen_ops.unregister_qset = irdma_lan_unregister_qset;
rf->hw.hw_addr = pf->hw.hw_addr;
rf->pcidev = pf->pdev;
- rf->msix_count = pf->num_rdma_msix;
rf->pf_id = pf->hw.pf_id;
- rf->msix_entries = &pf->msix_entries[pf->rdma_base_vector];
rf->default_vsi.vsi_idx = vsi->vsi_num;
rf->protocol_used = pf->rdma_mode & IIDC_RDMA_PROTOCOL_ROCEV2 ?
IRDMA_ROCE_PROTOCOL_ONLY : IRDMA_IWARP_PROTOCOL_ONLY;
@@ -281,6 +317,10 @@ static int irdma_probe(struct auxiliary_device *aux_dev, const struct auxiliary_
irdma_fill_device_info(iwdev, pf, vsi);
rf = iwdev->rf;
+ err = irdma_init_interrupts(rf, pf);
+ if (err)
+ goto err_init_interrupts;
+
err = irdma_ctrl_init_hw(rf);
if (err)
goto err_ctrl_init;
@@ -311,6 +351,8 @@ static int irdma_probe(struct auxiliary_device *aux_dev, const struct auxiliary_
err_rt_init:
irdma_ctrl_deinit_hw(rf);
err_ctrl_init:
+ irdma_deinit_interrupts(rf, pf);
+err_init_interrupts:
kfree(iwdev->rf);
ib_dealloc_device(&iwdev->ibdev);
diff --git a/drivers/infiniband/hw/irdma/main.h b/drivers/infiniband/hw/irdma/main.h
index 9f0ed6e84471..ef9a9b79d711 100644
--- a/drivers/infiniband/hw/irdma/main.h
+++ b/drivers/infiniband/hw/irdma/main.h
@@ -117,6 +117,9 @@ extern struct auxiliary_driver i40iw_auxiliary_drv;
#define IRDMA_IRQ_NAME_STR_LEN (64)
+#define IRDMA_NUM_AEQ_MSIX 1
+#define IRDMA_MIN_MSIX 2
+
enum init_completion_state {
INVALID_STATE = 0,
INITIAL_STATE,
diff --git a/drivers/net/ethernet/intel/ice/ice.h b/drivers/net/ethernet/intel/ice/ice.h
index f4cac59706f9..c37808b0d04b 100644
--- a/drivers/net/ethernet/intel/ice/ice.h
+++ b/drivers/net/ethernet/intel/ice/ice.h
@@ -96,7 +96,6 @@
#define ICE_MIN_LAN_OICR_MSIX 1
#define ICE_MIN_MSIX (ICE_MIN_LAN_TXRX_MSIX + ICE_MIN_LAN_OICR_MSIX)
#define ICE_FDIR_MSIX 2
-#define ICE_RDMA_NUM_AEQ_MSIX 4
#define ICE_NO_VSI 0xffff
#define ICE_VSI_MAP_CONTIG 0
#define ICE_VSI_MAP_SCATTER 1
diff --git a/drivers/net/ethernet/intel/ice/ice_idc.c b/drivers/net/ethernet/intel/ice/ice_idc.c
index 145b27f2a4ce..bab3e81cad5d 100644
--- a/drivers/net/ethernet/intel/ice/ice_idc.c
+++ b/drivers/net/ethernet/intel/ice/ice_idc.c
@@ -228,61 +228,34 @@ void ice_get_qos_params(struct ice_pf *pf, struct iidc_qos_params *qos)
}
EXPORT_SYMBOL_GPL(ice_get_qos_params);
-/**
- * ice_alloc_rdma_qvectors - Allocate vector resources for RDMA driver
- * @pf: board private structure to initialize
- */
-static int ice_alloc_rdma_qvectors(struct ice_pf *pf)
+int ice_alloc_rdma_qvector(struct ice_pf *pf, struct msix_entry *entry)
{
- if (ice_is_rdma_ena(pf)) {
- int i;
-
- pf->msix_entries = kcalloc(pf->num_rdma_msix,
- sizeof(*pf->msix_entries),
- GFP_KERNEL);
- if (!pf->msix_entries)
- return -ENOMEM;
+ struct msi_map map = ice_alloc_irq(pf, true);
- /* RDMA is the only user of pf->msix_entries array */
- pf->rdma_base_vector = 0;
-
- for (i = 0; i < pf->num_rdma_msix; i++) {
- struct msix_entry *entry = &pf->msix_entries[i];
- struct msi_map map;
+ if (map.index < 0)
+ return -ENOMEM;
- map = ice_alloc_irq(pf, false);
- if (map.index < 0)
- break;
+ entry->entry = map.index;
+ entry->vector = map.virq;
- entry->entry = map.index;
- entry->vector = map.virq;
- }
- }
return 0;
}
+EXPORT_SYMBOL_GPL(ice_alloc_rdma_qvector);
/**
* ice_free_rdma_qvector - free vector resources reserved for RDMA driver
* @pf: board private structure to initialize
+ * @entry: MSI-X entry to be removed
*/
-static void ice_free_rdma_qvector(struct ice_pf *pf)
+void ice_free_rdma_qvector(struct ice_pf *pf, struct msix_entry *entry)
{
- int i;
-
- if (!pf->msix_entries)
- return;
-
- for (i = 0; i < pf->num_rdma_msix; i++) {
- struct msi_map map;
+ 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;
+ map.index = entry->entry;
+ map.virq = entry->vector;
+ ice_free_irq(pf, map);
}
+EXPORT_SYMBOL_GPL(ice_free_rdma_qvector);
/**
* ice_adev_release - function to be mapped to AUX dev's release op
@@ -382,12 +355,6 @@ int ice_init_rdma(struct ice_pf *pf)
return -ENOMEM;
}
- /* Reserve vector resources */
- ret = ice_alloc_rdma_qvectors(pf);
- if (ret < 0) {
- dev_err(dev, "failed to reserve vectors for RDMA\n");
- goto err_reserve_rdma_qvector;
- }
pf->rdma_mode |= IIDC_RDMA_PROTOCOL_ROCEV2;
ret = ice_plug_aux_dev(pf);
if (ret)
@@ -395,8 +362,6 @@ int ice_init_rdma(struct ice_pf *pf)
return 0;
err_plug_aux_dev:
- ice_free_rdma_qvector(pf);
-err_reserve_rdma_qvector:
pf->adev = NULL;
xa_erase(&ice_aux_id, pf->aux_idx);
return ret;
@@ -412,6 +377,5 @@ void ice_deinit_rdma(struct ice_pf *pf)
return;
ice_unplug_aux_dev(pf);
- ice_free_rdma_qvector(pf);
xa_erase(&ice_aux_id, pf->aux_idx);
}
diff --git a/drivers/net/ethernet/intel/ice/ice_irq.c b/drivers/net/ethernet/intel/ice/ice_irq.c
index 1a7d446ab5f1..80c9ee2e64c1 100644
--- a/drivers/net/ethernet/intel/ice/ice_irq.c
+++ b/drivers/net/ethernet/intel/ice/ice_irq.c
@@ -84,11 +84,12 @@ static struct ice_irq_entry *ice_get_irq_res(struct ice_pf *pf, bool dyn_only)
return entry;
}
+#define ICE_RDMA_AEQ_MSIX 1
static int ice_get_default_msix_amount(struct ice_pf *pf)
{
return ICE_MIN_LAN_OICR_MSIX + num_online_cpus() +
(test_bit(ICE_FLAG_FD_ENA, pf->flags) ? ICE_FDIR_MSIX : 0) +
- (ice_is_rdma_ena(pf) ? num_online_cpus() + ICE_RDMA_NUM_AEQ_MSIX : 0);
+ (ice_is_rdma_ena(pf) ? num_online_cpus() + ICE_RDMA_AEQ_MSIX : 0);
}
/**
diff --git a/include/linux/net/intel/iidc.h b/include/linux/net/intel/iidc.h
index 1c1332e4df26..13274c3def66 100644
--- a/include/linux/net/intel/iidc.h
+++ b/include/linux/net/intel/iidc.h
@@ -78,6 +78,8 @@ int ice_del_rdma_qset(struct ice_pf *pf, struct iidc_rdma_qset_params *qset);
int ice_rdma_request_reset(struct ice_pf *pf, enum iidc_reset_type reset_type);
int ice_rdma_update_vsi_filter(struct ice_pf *pf, u16 vsi_id, bool enable);
void ice_get_qos_params(struct ice_pf *pf, struct iidc_qos_params *qos);
+int ice_alloc_rdma_qvector(struct ice_pf *pf, struct msix_entry *entry);
+void ice_free_rdma_qvector(struct ice_pf *pf, struct msix_entry *entry);
/* Structure representing auxiliary driver tailored information about the core
* PCI dev, each auxiliary driver using the IIDC interface will have an
--
2.42.0
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