@@ -213,6 +213,7 @@ config BNXT
select NET_DEVLINK
select PAGE_POOL
select DIMLIB
+ select AUXILIARY_BUS
help
This driver supports Broadcom NetXtreme-C/E 10/25/40/50 gigabit
Ethernet cards. To compile this driver as a module, choose M here:
@@ -13178,6 +13178,7 @@ static void bnxt_remove_one(struct pci_dev *pdev)
struct net_device *dev = pci_get_drvdata(pdev);
struct bnxt *bp = netdev_priv(dev);
+ bnxt_rdma_aux_device_uninit(bp);
if (BNXT_PF(bp))
bnxt_sriov_disable(bp);
@@ -13776,11 +13777,13 @@ static int bnxt_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
bnxt_dl_fw_reporters_create(bp);
+ bnxt_rdma_aux_device_init(bp);
+
bnxt_print_device_info(bp);
pci_save_state(pdev);
- return 0;
+ return 0;
init_err_cleanup:
bnxt_dl_unregister(bp);
init_err_dl:
@@ -13824,7 +13827,6 @@ static void bnxt_shutdown(struct pci_dev *pdev)
if (netif_running(dev))
dev_close(dev);
- bnxt_ulp_shutdown(bp);
bnxt_clear_int_mode(bp);
pci_disable_device(pdev);
@@ -24,6 +24,7 @@
#include <linux/interrupt.h>
#include <linux/rhashtable.h>
#include <linux/crash_dump.h>
+#include <linux/auxiliary_bus.h>
#include <net/devlink.h>
#include <net/dst_metadata.h>
#include <net/xdp.h>
@@ -1631,6 +1632,12 @@ struct bnxt_fw_health {
#define BNXT_FW_IF_RETRY 10
#define BNXT_FW_SLOT_RESET_RETRY 4
+struct bnxt_aux_priv {
+ struct auxiliary_device aux_dev;
+ struct bnxt_en_dev *edev;
+ int id;
+};
+
enum board_idx {
BCM57301,
BCM57302,
@@ -1852,6 +1859,7 @@ struct bnxt {
#define BNXT_CHIP_P4_PLUS(bp) \
(BNXT_CHIP_P4(bp) || BNXT_CHIP_P5(bp))
+ struct bnxt_aux_priv *aux_priv;
struct bnxt_en_dev *edev;
struct bnxt_napi **bnapi;
@@ -25,6 +25,8 @@
#include "bnxt_hwrm.h"
#include "bnxt_ulp.h"
+static DEFINE_IDA(bnxt_aux_dev_ids);
+
static int bnxt_register_dev(struct bnxt_en_dev *edev, unsigned int ulp_id,
struct bnxt_ulp_ops *ulp_ops, void *handle)
{
@@ -32,7 +34,6 @@ static int bnxt_register_dev(struct bnxt_en_dev *edev, unsigned int ulp_id,
struct bnxt *bp = netdev_priv(dev);
struct bnxt_ulp *ulp;
- ASSERT_RTNL();
if (ulp_id >= BNXT_MAX_ULP)
return -EINVAL;
@@ -69,10 +70,11 @@ static int bnxt_unregister_dev(struct bnxt_en_dev *edev, unsigned int ulp_id)
struct bnxt_ulp *ulp;
int i = 0;
- ASSERT_RTNL();
if (ulp_id >= BNXT_MAX_ULP)
return -EINVAL;
+ edev->flags |= BNXT_EN_FLAG_ULP_STOPPED;
+
ulp = &edev->ulp_tbl[ulp_id];
if (!rcu_access_pointer(ulp->ulp_ops)) {
netdev_err(bp->dev, "ulp id %d not registered\n", ulp_id);
@@ -126,7 +128,6 @@ static int bnxt_req_msix_vecs(struct bnxt_en_dev *edev, unsigned int ulp_id,
int total_vecs;
int rc = 0;
- ASSERT_RTNL();
if (ulp_id != BNXT_ROCE_ULP)
return -EINVAL;
@@ -153,6 +154,7 @@ static int bnxt_req_msix_vecs(struct bnxt_en_dev *edev, unsigned int ulp_id,
edev->ulp_tbl[ulp_id].msix_requested = avail_msix;
hw_resc = &bp->hw_resc;
total_vecs = idx + avail_msix;
+ rtnl_lock();
if (bp->total_irqs < total_vecs ||
(BNXT_NEW_RM(bp) && hw_resc->resv_irqs < total_vecs)) {
if (netif_running(dev)) {
@@ -162,6 +164,7 @@ static int bnxt_req_msix_vecs(struct bnxt_en_dev *edev, unsigned int ulp_id,
rc = bnxt_reserve_rings(bp, true);
}
}
+ rtnl_unlock();
if (rc) {
edev->ulp_tbl[ulp_id].msix_requested = 0;
return -EAGAIN;
@@ -184,7 +187,6 @@ static int bnxt_free_msix_vecs(struct bnxt_en_dev *edev, unsigned int ulp_id)
struct net_device *dev = edev->net;
struct bnxt *bp = netdev_priv(dev);
- ASSERT_RTNL();
if (ulp_id != BNXT_ROCE_ULP)
return -EINVAL;
@@ -193,10 +195,13 @@ static int bnxt_free_msix_vecs(struct bnxt_en_dev *edev, unsigned int ulp_id)
edev->ulp_tbl[ulp_id].msix_requested = 0;
edev->flags &= ~BNXT_EN_FLAG_MSIX_REQUESTED;
+ rtnl_lock();
if (netif_running(dev) && !(edev->flags & BNXT_EN_FLAG_ULP_STOPPED)) {
bnxt_close_nic(bp, true, false);
bnxt_open_nic(bp, true, false);
}
+ rtnl_unlock();
+
return 0;
}
@@ -347,25 +352,6 @@ void bnxt_ulp_sriov_cfg(struct bnxt *bp, int num_vfs)
}
}
-void bnxt_ulp_shutdown(struct bnxt *bp)
-{
- struct bnxt_en_dev *edev = bp->edev;
- struct bnxt_ulp_ops *ops;
- int i;
-
- if (!edev)
- return;
-
- for (i = 0; i < BNXT_MAX_ULP; i++) {
- struct bnxt_ulp *ulp = &edev->ulp_tbl[i];
-
- ops = rtnl_dereference(ulp->ulp_ops);
- if (!ops || !ops->ulp_shutdown)
- continue;
- ops->ulp_shutdown(ulp->handle);
- }
-}
-
void bnxt_ulp_irq_stop(struct bnxt *bp)
{
struct bnxt_en_dev *edev = bp->edev;
@@ -475,6 +461,112 @@ static const struct bnxt_en_ops bnxt_en_ops_tbl = {
.bnxt_register_fw_async_events = bnxt_register_async_events,
};
+void bnxt_rdma_aux_device_uninit(struct bnxt *bp)
+{
+ struct bnxt_aux_priv *aux_priv;
+ struct auxiliary_device *adev;
+
+ /* Skip if no auxiliary device init was done. */
+ if (!(bp->flags & BNXT_FLAG_ROCE_CAP))
+ return;
+
+ aux_priv = bp->aux_priv;
+ adev = &aux_priv->aux_dev;
+ auxiliary_device_delete(adev);
+ auxiliary_device_uninit(adev);
+}
+
+static void bnxt_aux_dev_release(struct device *dev)
+{
+ struct bnxt_aux_priv *aux_priv =
+ container_of(dev, struct bnxt_aux_priv, aux_dev.dev);
+ struct bnxt *bp = netdev_priv(aux_priv->edev->net);
+
+ ida_free(&bnxt_aux_dev_ids, aux_priv->id);
+ aux_priv->edev->en_ops = NULL;
+ kfree(aux_priv->edev);
+ aux_priv->edev = NULL;
+ bp->edev = NULL;
+ kfree(aux_priv);
+}
+
+static void bnxt_set_edev_info(struct bnxt_en_dev *edev, struct bnxt *bp)
+{
+ edev->en_ops = &bnxt_en_ops_tbl;
+ edev->net = bp->dev;
+ edev->pdev = bp->pdev;
+ edev->l2_db_size = bp->db_size;
+ edev->l2_db_size_nc = bp->db_size;
+
+ if (bp->flags & BNXT_FLAG_ROCEV1_CAP)
+ edev->flags |= BNXT_EN_FLAG_ROCEV1_CAP;
+ if (bp->flags & BNXT_FLAG_ROCEV2_CAP)
+ edev->flags |= BNXT_EN_FLAG_ROCEV2_CAP;
+}
+
+void bnxt_rdma_aux_device_init(struct bnxt *bp)
+{
+ struct auxiliary_device *aux_dev;
+ struct bnxt_aux_priv *aux_priv;
+ struct bnxt_en_dev *edev;
+ int rc;
+
+ if (!(bp->flags & BNXT_FLAG_ROCE_CAP))
+ return;
+
+ bp->aux_priv = kzalloc(sizeof(*bp->aux_priv), GFP_KERNEL);
+ if (!bp->aux_priv)
+ goto exit;
+
+ bp->aux_priv->id = ida_alloc(&bnxt_aux_dev_ids, GFP_KERNEL);
+ if (bp->aux_priv->id < 0) {
+ netdev_warn(bp->dev,
+ "ida alloc failed for ROCE auxiliary device\n");
+ kfree(bp->aux_priv);
+ goto exit;
+ }
+
+ aux_priv = bp->aux_priv;
+ aux_dev = &aux_priv->aux_dev;
+ aux_dev->id = aux_priv->id;
+ aux_dev->name = "rdma";
+ aux_dev->dev.parent = &bp->pdev->dev;
+ aux_dev->dev.release = bnxt_aux_dev_release;
+
+ rc = auxiliary_device_init(aux_dev);
+ if (rc) {
+ ida_free(&bnxt_aux_dev_ids, bp->aux_priv->id);
+ kfree(bp->aux_priv);
+ goto exit;
+ }
+
+ /* From this point, all cleanup will happen via the .release callback &
+ * any error unwinding will need to include a call to
+ * auxiliary_device_uninit.
+ */
+ edev = kzalloc(sizeof(*edev), GFP_KERNEL);
+ if (!edev)
+ goto aux_dev_uninit;
+
+ aux_priv->edev = edev;
+ bp->edev = edev;
+ bnxt_set_edev_info(edev, bp);
+
+ rc = auxiliary_device_add(aux_dev);
+ if (rc) {
+ netdev_warn(bp->dev,
+ "Failed to add auxiliary device for ROCE\n");
+ goto aux_dev_uninit;
+ }
+
+ return;
+
+aux_dev_uninit:
+ auxiliary_device_uninit(aux_dev);
+exit:
+ bp->flags &= ~BNXT_FLAG_ROCE_CAP;
+}
+
struct bnxt_en_dev *bnxt_ulp_probe(struct net_device *dev)
{
struct bnxt *bp = netdev_priv(dev);
@@ -102,10 +102,11 @@ int bnxt_get_ulp_stat_ctxs(struct bnxt *bp);
void bnxt_ulp_stop(struct bnxt *bp);
void bnxt_ulp_start(struct bnxt *bp, int err);
void bnxt_ulp_sriov_cfg(struct bnxt *bp, int num_vfs);
-void bnxt_ulp_shutdown(struct bnxt *bp);
void bnxt_ulp_irq_stop(struct bnxt *bp);
void bnxt_ulp_irq_restart(struct bnxt *bp, int err);
void bnxt_ulp_async_events(struct bnxt *bp, struct hwrm_async_event_cmpl *cmpl);
+void bnxt_rdma_aux_device_uninit(struct bnxt *bp);
+void bnxt_rdma_aux_device_init(struct bnxt *bp);
struct bnxt_en_dev *bnxt_ulp_probe(struct net_device *dev);
#endif