Register auxiliary module to create ibdevice for ionic
ethernet adapter.
Co-developed-by: Andrew Boyer <andrew.boyer@amd.com>
Signed-off-by: Andrew Boyer <andrew.boyer@amd.com>
Co-developed-by: Allen Hubbe <allen.hubbe@amd.com>
Signed-off-by: Allen Hubbe <allen.hubbe@amd.com>
Signed-off-by: Abhijit Gangurde <abhijit.gangurde@amd.com>
---
v1->v2
- Removed netdev references from ionic RDMA driver
- Moved to ionic_lif* instead of void* to convey information between
aux devices and drivers.
drivers/infiniband/hw/ionic/ionic_ibdev.c | 135 ++++++++++++++++++++
drivers/infiniband/hw/ionic/ionic_ibdev.h | 21 +++
drivers/infiniband/hw/ionic/ionic_lif_cfg.c | 121 ++++++++++++++++++
drivers/infiniband/hw/ionic/ionic_lif_cfg.h | 65 ++++++++++
4 files changed, 342 insertions(+)
create mode 100644 drivers/infiniband/hw/ionic/ionic_ibdev.c
create mode 100644 drivers/infiniband/hw/ionic/ionic_ibdev.h
create mode 100644 drivers/infiniband/hw/ionic/ionic_lif_cfg.c
create mode 100644 drivers/infiniband/hw/ionic/ionic_lif_cfg.h
diff --git a/drivers/infiniband/hw/ionic/ionic_ibdev.c b/drivers/infiniband/hw/ionic/ionic_ibdev.c
new file mode 100644
index 000000000000..ca047a789378
--- /dev/null
+++ b/drivers/infiniband/hw/ionic/ionic_ibdev.c
@@ -0,0 +1,135 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright (C) 2018-2025, Advanced Micro Devices, Inc. */
+
+#include <linux/module.h>
+#include <linux/printk.h>
+#include <net/addrconf.h>
+
+#include "ionic_ibdev.h"
+
+#define DRIVER_DESCRIPTION "AMD Pensando RoCE HCA driver"
+#define DEVICE_DESCRIPTION "AMD Pensando RoCE HCA"
+
+MODULE_AUTHOR("Allen Hubbe <allen.hubbe@amd.com>");
+MODULE_DESCRIPTION(DRIVER_DESCRIPTION);
+MODULE_LICENSE("GPL");
+MODULE_IMPORT_NS("NET_IONIC");
+
+static const struct auxiliary_device_id ionic_aux_id_table[] = {
+ { .name = "ionic.rdma", },
+ {},
+};
+
+MODULE_DEVICE_TABLE(auxiliary, ionic_aux_id_table);
+
+static void ionic_destroy_ibdev(struct ionic_ibdev *dev)
+{
+ ib_unregister_device(&dev->ibdev);
+ ib_dealloc_device(&dev->ibdev);
+}
+
+static struct ionic_ibdev *ionic_create_ibdev(struct ionic_aux_dev *ionic_adev)
+{
+ struct ib_device *ibdev;
+ struct ionic_ibdev *dev;
+ int rc;
+
+ rc = ionic_version_check(&ionic_adev->adev.dev, ionic_adev->lif);
+ if (rc)
+ goto err_dev;
+
+ dev = ib_alloc_device(ionic_ibdev, ibdev);
+ if (!dev) {
+ rc = -ENOMEM;
+ goto err_dev;
+ }
+
+ ionic_fill_lif_cfg(ionic_adev->lif, &dev->lif_cfg);
+
+ ibdev = &dev->ibdev;
+ ibdev->dev.parent = dev->lif_cfg.hwdev;
+
+ strscpy(ibdev->name, "ionic_%d", IB_DEVICE_NAME_MAX);
+ strscpy(ibdev->node_desc, DEVICE_DESCRIPTION, IB_DEVICE_NODE_DESC_MAX);
+
+ ibdev->node_type = RDMA_NODE_IB_CA;
+ ibdev->phys_port_cnt = 1;
+
+ /* the first two eq are reserved for async events */
+ ibdev->num_comp_vectors = dev->lif_cfg.eq_count - 2;
+
+ addrconf_ifid_eui48((u8 *)&ibdev->node_guid,
+ ionic_lif_netdev(ionic_adev->lif));
+
+ rc = ib_device_set_netdev(ibdev, ionic_lif_netdev(ionic_adev->lif), 1);
+ if (rc)
+ goto err_admin;
+
+ rc = ib_register_device(ibdev, "ionic_%d", ibdev->dev.parent);
+ if (rc)
+ goto err_register;
+
+ return dev;
+
+err_register:
+err_admin:
+ ib_dealloc_device(&dev->ibdev);
+err_dev:
+ return ERR_PTR(rc);
+}
+
+static int ionic_aux_probe(struct auxiliary_device *adev,
+ const struct auxiliary_device_id *id)
+{
+ struct ionic_aux_dev *ionic_adev;
+ struct ionic_ibdev *dev;
+
+ ionic_adev = container_of(adev, struct ionic_aux_dev, adev);
+ dev = ionic_create_ibdev(ionic_adev);
+ if (IS_ERR(dev))
+ return dev_err_probe(&adev->dev, PTR_ERR(dev),
+ "Failed to register ibdev\n");
+
+ auxiliary_set_drvdata(adev, dev);
+ ibdev_dbg(&dev->ibdev, "registered\n");
+
+ return 0;
+}
+
+static void ionic_aux_remove(struct auxiliary_device *adev)
+{
+ struct ionic_ibdev *dev = auxiliary_get_drvdata(adev);
+
+ dev_dbg(&adev->dev, "unregister ibdev\n");
+ ionic_destroy_ibdev(dev);
+ dev_dbg(&adev->dev, "unregistered\n");
+}
+
+static struct auxiliary_driver ionic_aux_r_driver = {
+ .name = "rdma",
+ .probe = ionic_aux_probe,
+ .remove = ionic_aux_remove,
+ .id_table = ionic_aux_id_table,
+};
+
+static int __init ionic_mod_init(void)
+{
+ int rc;
+
+ rc = auxiliary_driver_register(&ionic_aux_r_driver);
+ if (rc)
+ goto err_aux;
+
+ return 0;
+
+err_aux:
+ return rc;
+}
+
+static void __exit ionic_mod_exit(void)
+{
+ auxiliary_driver_unregister(&ionic_aux_r_driver);
+}
+
+module_init(ionic_mod_init);
+module_exit(ionic_mod_exit);
diff --git a/drivers/infiniband/hw/ionic/ionic_ibdev.h b/drivers/infiniband/hw/ionic/ionic_ibdev.h
new file mode 100644
index 000000000000..e13adff390d7
--- /dev/null
+++ b/drivers/infiniband/hw/ionic/ionic_ibdev.h
@@ -0,0 +1,21 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Copyright (C) 2018-2025, Advanced Micro Devices, Inc. */
+
+#ifndef _IONIC_IBDEV_H_
+#define _IONIC_IBDEV_H_
+
+#include <rdma/ib_verbs.h>
+#include <ionic_api.h>
+
+#include "ionic_lif_cfg.h"
+
+#define IONIC_MIN_RDMA_VERSION 0
+#define IONIC_MAX_RDMA_VERSION 2
+
+struct ionic_ibdev {
+ struct ib_device ibdev;
+
+ struct ionic_lif_cfg lif_cfg;
+};
+
+#endif /* _IONIC_IBDEV_H_ */
diff --git a/drivers/infiniband/hw/ionic/ionic_lif_cfg.c b/drivers/infiniband/hw/ionic/ionic_lif_cfg.c
new file mode 100644
index 000000000000..a02eb2f5bd45
--- /dev/null
+++ b/drivers/infiniband/hw/ionic/ionic_lif_cfg.c
@@ -0,0 +1,121 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright (C) 2018-2025, Advanced Micro Devices, Inc. */
+
+#include <linux/kernel.h>
+
+#include <ionic.h>
+#include <ionic_lif.h>
+
+#include "ionic_lif_cfg.h"
+
+#define IONIC_MIN_RDMA_VERSION 0
+#define IONIC_MAX_RDMA_VERSION 2
+
+static u8 ionic_get_expdb(struct ionic_lif *lif)
+{
+ u8 expdb_support = 0;
+
+ if (lif->ionic->idev.phy_cmb_expdb64_pages)
+ expdb_support |= IONIC_EXPDB_64B_WQE;
+ if (lif->ionic->idev.phy_cmb_expdb128_pages)
+ expdb_support |= IONIC_EXPDB_128B_WQE;
+ if (lif->ionic->idev.phy_cmb_expdb256_pages)
+ expdb_support |= IONIC_EXPDB_256B_WQE;
+ if (lif->ionic->idev.phy_cmb_expdb512_pages)
+ expdb_support |= IONIC_EXPDB_512B_WQE;
+
+ return expdb_support;
+}
+
+void ionic_fill_lif_cfg(struct ionic_lif *lif, struct ionic_lif_cfg *cfg)
+{
+ union ionic_lif_identity *ident = &lif->ionic->ident.lif;
+
+ cfg->lif = lif;
+ cfg->hwdev = &lif->ionic->pdev->dev;
+ cfg->lif_index = lif->index;
+ cfg->lif_hw_index = lif->hw_index;
+
+ cfg->dbid = lif->kern_pid;
+ cfg->dbid_count = le32_to_cpu(lif->ionic->ident.dev.ndbpgs_per_lif);
+ cfg->dbpage = lif->kern_dbpage;
+ cfg->intr_ctrl = lif->ionic->idev.intr_ctrl;
+
+ cfg->db_phys = lif->ionic->bars[IONIC_PCI_BAR_DBELL].bus_addr;
+
+ if (IONIC_VERSION(ident->rdma.version, ident->rdma.minor_version) >=
+ IONIC_VERSION(2, 1))
+ cfg->page_size_supported =
+ cpu_to_le64(ident->rdma.page_size_cap);
+ else
+ cfg->page_size_supported = IONIC_PAGE_SIZE_SUPPORTED;
+
+ cfg->rdma_version = ident->rdma.version;
+ cfg->qp_opcodes = ident->rdma.qp_opcodes;
+ cfg->admin_opcodes = ident->rdma.admin_opcodes;
+
+ cfg->stats_type = cpu_to_le16(ident->rdma.stats_type);
+ cfg->npts_per_lif = le32_to_cpu(ident->rdma.npts_per_lif);
+ cfg->nmrs_per_lif = le32_to_cpu(ident->rdma.nmrs_per_lif);
+ cfg->nahs_per_lif = le32_to_cpu(ident->rdma.nahs_per_lif);
+
+ cfg->aq_base = le32_to_cpu(ident->rdma.aq_qtype.qid_base);
+ cfg->cq_base = le32_to_cpu(ident->rdma.cq_qtype.qid_base);
+ cfg->eq_base = le32_to_cpu(ident->rdma.eq_qtype.qid_base);
+
+ /*
+ * ionic_create_rdma_admin() may reduce aq_count or eq_count if
+ * it is unable to allocate all that were requested.
+ * aq_count is tunable; see ionic_aq_count
+ * eq_count is tunable; see ionic_eq_count
+ */
+ cfg->aq_count = le32_to_cpu(ident->rdma.aq_qtype.qid_count);
+ cfg->eq_count = le32_to_cpu(ident->rdma.eq_qtype.qid_count);
+ cfg->cq_count = le32_to_cpu(ident->rdma.cq_qtype.qid_count);
+ cfg->qp_count = le32_to_cpu(ident->rdma.sq_qtype.qid_count);
+ cfg->dbid_count = le32_to_cpu(lif->ionic->ident.dev.ndbpgs_per_lif);
+
+ cfg->aq_qtype = ident->rdma.aq_qtype.qtype;
+ cfg->sq_qtype = ident->rdma.sq_qtype.qtype;
+ cfg->rq_qtype = ident->rdma.rq_qtype.qtype;
+ cfg->cq_qtype = ident->rdma.cq_qtype.qtype;
+ cfg->eq_qtype = ident->rdma.eq_qtype.qtype;
+ cfg->udma_qgrp_shift = ident->rdma.udma_shift;
+ cfg->udma_count = 2;
+
+ cfg->max_stride = ident->rdma.max_stride;
+ cfg->expdb_mask = ionic_get_expdb(lif);
+
+ cfg->sq_expdb =
+ !!(lif->qtype_info[IONIC_QTYPE_TXQ].features & IONIC_QIDENT_F_EXPDB);
+ cfg->rq_expdb =
+ !!(lif->qtype_info[IONIC_QTYPE_RXQ].features & IONIC_QIDENT_F_EXPDB);
+}
+
+struct net_device *ionic_lif_netdev(struct ionic_lif *lif)
+{
+ return lif->netdev;
+}
+
+int ionic_version_check(const struct device *dev, struct ionic_lif *lif)
+{
+ union ionic_lif_identity *ident = &lif->ionic->ident.lif;
+ int rc;
+
+ if (ident->rdma.version < IONIC_MIN_RDMA_VERSION ||
+ ident->rdma.version > IONIC_MAX_RDMA_VERSION) {
+ rc = -EINVAL;
+ dev_err_probe(dev, rc,
+ "ionic_rdma: incompatible version, fw ver %u\n",
+ ident->rdma.version);
+ dev_err_probe(dev, rc,
+ "ionic_rdma: Driver Min Version %u\n",
+ IONIC_MIN_RDMA_VERSION);
+ dev_err_probe(dev, rc,
+ "ionic_rdma: Driver Max Version %u\n",
+ IONIC_MAX_RDMA_VERSION);
+ return rc;
+ }
+
+ return 0;
+}
diff --git a/drivers/infiniband/hw/ionic/ionic_lif_cfg.h b/drivers/infiniband/hw/ionic/ionic_lif_cfg.h
new file mode 100644
index 000000000000..b095637c54cf
--- /dev/null
+++ b/drivers/infiniband/hw/ionic/ionic_lif_cfg.h
@@ -0,0 +1,65 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Copyright (C) 2018-2025, Advanced Micro Devices, Inc. */
+
+#ifndef _IONIC_LIF_CFG_H_
+
+#define IONIC_VERSION(a, b) (((a) << 16) + ((b) << 8))
+#define IONIC_PAGE_SIZE_SUPPORTED 0x40201000 /* 4kb, 2Mb, 1Gb */
+
+#define IONIC_EXPDB_64B_WQE BIT(0)
+#define IONIC_EXPDB_128B_WQE BIT(1)
+#define IONIC_EXPDB_256B_WQE BIT(2)
+#define IONIC_EXPDB_512B_WQE BIT(3)
+
+struct ionic_lif_cfg {
+ struct device *hwdev;
+ struct ionic_lif *lif;
+
+ int lif_index;
+ int lif_hw_index;
+
+ u32 dbid;
+ int dbid_count;
+ u64 __iomem *dbpage;
+ struct ionic_intr __iomem *intr_ctrl;
+ phys_addr_t db_phys;
+
+ u64 page_size_supported;
+ u32 npts_per_lif;
+ u32 nmrs_per_lif;
+ u32 nahs_per_lif;
+
+ u32 aq_base;
+ u32 cq_base;
+ u32 eq_base;
+
+ int aq_count;
+ int eq_count;
+ int cq_count;
+ int qp_count;
+
+ u16 stats_type;
+ u8 aq_qtype;
+ u8 sq_qtype;
+ u8 rq_qtype;
+ u8 cq_qtype;
+ u8 eq_qtype;
+
+ u8 udma_count;
+ u8 udma_qgrp_shift;
+
+ u8 rdma_version;
+ u8 qp_opcodes;
+ u8 admin_opcodes;
+
+ u8 max_stride;
+ bool sq_expdb;
+ bool rq_expdb;
+ u8 expdb_mask;
+};
+
+int ionic_version_check(const struct device *dev, struct ionic_lif *lif);
+void ionic_fill_lif_cfg(struct ionic_lif *lif, struct ionic_lif_cfg *cfg);
+struct net_device *ionic_lif_netdev(struct ionic_lif *lif);
+
+#endif /* _IONIC_LIF_CFG_H_ */
--
2.34.1On Thu, May 8, 2025 at 10:33 AM Abhijit Gangurde
<abhijit.gangurde@amd.com> wrote:
>
> Register auxiliary module to create ibdevice for ionic
> ethernet adapter.
>
> Co-developed-by: Andrew Boyer <andrew.boyer@amd.com>
> Signed-off-by: Andrew Boyer <andrew.boyer@amd.com>
> Co-developed-by: Allen Hubbe <allen.hubbe@amd.com>
> Signed-off-by: Allen Hubbe <allen.hubbe@amd.com>
> Signed-off-by: Abhijit Gangurde <abhijit.gangurde@amd.com>
> ---
> v1->v2
> - Removed netdev references from ionic RDMA driver
> - Moved to ionic_lif* instead of void* to convey information between
> aux devices and drivers.
>
> drivers/infiniband/hw/ionic/ionic_ibdev.c | 135 ++++++++++++++++++++
> drivers/infiniband/hw/ionic/ionic_ibdev.h | 21 +++
> drivers/infiniband/hw/ionic/ionic_lif_cfg.c | 121 ++++++++++++++++++
> drivers/infiniband/hw/ionic/ionic_lif_cfg.h | 65 ++++++++++
> 4 files changed, 342 insertions(+)
> create mode 100644 drivers/infiniband/hw/ionic/ionic_ibdev.c
> create mode 100644 drivers/infiniband/hw/ionic/ionic_ibdev.h
> create mode 100644 drivers/infiniband/hw/ionic/ionic_lif_cfg.c
> create mode 100644 drivers/infiniband/hw/ionic/ionic_lif_cfg.h
>
> diff --git a/drivers/infiniband/hw/ionic/ionic_ibdev.c b/drivers/infiniband/hw/ionic/ionic_ibdev.c
> new file mode 100644
> index 000000000000..ca047a789378
> --- /dev/null
> +++ b/drivers/infiniband/hw/ionic/ionic_ibdev.c
> @@ -0,0 +1,135 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/* Copyright (C) 2018-2025, Advanced Micro Devices, Inc. */
> +
> +#include <linux/module.h>
> +#include <linux/printk.h>
> +#include <net/addrconf.h>
> +
> +#include "ionic_ibdev.h"
> +
> +#define DRIVER_DESCRIPTION "AMD Pensando RoCE HCA driver"
> +#define DEVICE_DESCRIPTION "AMD Pensando RoCE HCA"
> +
> +MODULE_AUTHOR("Allen Hubbe <allen.hubbe@amd.com>");
> +MODULE_DESCRIPTION(DRIVER_DESCRIPTION);
> +MODULE_LICENSE("GPL");
> +MODULE_IMPORT_NS("NET_IONIC");
> +
> +static const struct auxiliary_device_id ionic_aux_id_table[] = {
> + { .name = "ionic.rdma", },
> + {},
> +};
> +
> +MODULE_DEVICE_TABLE(auxiliary, ionic_aux_id_table);
> +
> +static void ionic_destroy_ibdev(struct ionic_ibdev *dev)
> +{
> + ib_unregister_device(&dev->ibdev);
> + ib_dealloc_device(&dev->ibdev);
> +}
> +
> +static struct ionic_ibdev *ionic_create_ibdev(struct ionic_aux_dev *ionic_adev)
> +{
> + struct ib_device *ibdev;
> + struct ionic_ibdev *dev;
> + int rc;
> +
> + rc = ionic_version_check(&ionic_adev->adev.dev, ionic_adev->lif);
> + if (rc)
> + goto err_dev;
You can return directly from here
> +
> + dev = ib_alloc_device(ionic_ibdev, ibdev);
> + if (!dev) {
> + rc = -ENOMEM;
> + goto err_dev;
You can return directly from here
> + }
> +
> + ionic_fill_lif_cfg(ionic_adev->lif, &dev->lif_cfg);
> +
> + ibdev = &dev->ibdev;
> + ibdev->dev.parent = dev->lif_cfg.hwdev;
> +
> + strscpy(ibdev->name, "ionic_%d", IB_DEVICE_NAME_MAX);
> + strscpy(ibdev->node_desc, DEVICE_DESCRIPTION, IB_DEVICE_NODE_DESC_MAX);
> +
> + ibdev->node_type = RDMA_NODE_IB_CA;
> + ibdev->phys_port_cnt = 1;
> +
> + /* the first two eq are reserved for async events */
> + ibdev->num_comp_vectors = dev->lif_cfg.eq_count - 2;
> +
> + addrconf_ifid_eui48((u8 *)&ibdev->node_guid,
> + ionic_lif_netdev(ionic_adev->lif));
> +
> + rc = ib_device_set_netdev(ibdev, ionic_lif_netdev(ionic_adev->lif), 1);
> + if (rc)
> + goto err_admin;
> +
> + rc = ib_register_device(ibdev, "ionic_%d", ibdev->dev.parent);
> + if (rc)
> + goto err_register;
> +
> + return dev;
> +
> +err_register:
Unnecessary label
> +err_admin:
> + ib_dealloc_device(&dev->ibdev);
> +err_dev:
> + return ERR_PTR(rc);
> +}
> +
> +static int ionic_aux_probe(struct auxiliary_device *adev,
> + const struct auxiliary_device_id *id)
> +{
> + struct ionic_aux_dev *ionic_adev;
> + struct ionic_ibdev *dev;
> +
> + ionic_adev = container_of(adev, struct ionic_aux_dev, adev);
> + dev = ionic_create_ibdev(ionic_adev);
> + if (IS_ERR(dev))
> + return dev_err_probe(&adev->dev, PTR_ERR(dev),
> + "Failed to register ibdev\n");
> +
> + auxiliary_set_drvdata(adev, dev);
> + ibdev_dbg(&dev->ibdev, "registered\n");
> +
> + return 0;
> +}
> +
> +static void ionic_aux_remove(struct auxiliary_device *adev)
> +{
> + struct ionic_ibdev *dev = auxiliary_get_drvdata(adev);
> +
> + dev_dbg(&adev->dev, "unregister ibdev\n");
> + ionic_destroy_ibdev(dev);
> + dev_dbg(&adev->dev, "unregistered\n");
> +}
> +
> +static struct auxiliary_driver ionic_aux_r_driver = {
> + .name = "rdma",
> + .probe = ionic_aux_probe,
> + .remove = ionic_aux_remove,
> + .id_table = ionic_aux_id_table,
> +};
> +
> +static int __init ionic_mod_init(void)
> +{
> + int rc;
> +
> + rc = auxiliary_driver_register(&ionic_aux_r_driver);
> + if (rc)
> + goto err_aux;
> +
> + return 0;
> +
> +err_aux:
> + return rc;
You can simplify this function as "return
auxiliary_driver_register(&ionic_aux_r_driver);"
> +}
> +
> +static void __exit ionic_mod_exit(void)
> +{
> + auxiliary_driver_unregister(&ionic_aux_r_driver);
> +}
> +
> +module_init(ionic_mod_init);
> +module_exit(ionic_mod_exit);
> diff --git a/drivers/infiniband/hw/ionic/ionic_ibdev.h b/drivers/infiniband/hw/ionic/ionic_ibdev.h
> new file mode 100644
> index 000000000000..e13adff390d7
> --- /dev/null
> +++ b/drivers/infiniband/hw/ionic/ionic_ibdev.h
> @@ -0,0 +1,21 @@
> +/* SPDX-License-Identifier: GPL-2.0 */
> +/* Copyright (C) 2018-2025, Advanced Micro Devices, Inc. */
> +
> +#ifndef _IONIC_IBDEV_H_
> +#define _IONIC_IBDEV_H_
> +
> +#include <rdma/ib_verbs.h>
> +#include <ionic_api.h>
> +
> +#include "ionic_lif_cfg.h"
> +
> +#define IONIC_MIN_RDMA_VERSION 0
> +#define IONIC_MAX_RDMA_VERSION 2
> +
> +struct ionic_ibdev {
> + struct ib_device ibdev;
> +
> + struct ionic_lif_cfg lif_cfg;
> +};
> +
> +#endif /* _IONIC_IBDEV_H_ */
> diff --git a/drivers/infiniband/hw/ionic/ionic_lif_cfg.c b/drivers/infiniband/hw/ionic/ionic_lif_cfg.c
> new file mode 100644
> index 000000000000..a02eb2f5bd45
> --- /dev/null
> +++ b/drivers/infiniband/hw/ionic/ionic_lif_cfg.c
> @@ -0,0 +1,121 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/* Copyright (C) 2018-2025, Advanced Micro Devices, Inc. */
> +
> +#include <linux/kernel.h>
> +
> +#include <ionic.h>
> +#include <ionic_lif.h>
> +
> +#include "ionic_lif_cfg.h"
> +
> +#define IONIC_MIN_RDMA_VERSION 0
> +#define IONIC_MAX_RDMA_VERSION 2
> +
> +static u8 ionic_get_expdb(struct ionic_lif *lif)
> +{
> + u8 expdb_support = 0;
> +
> + if (lif->ionic->idev.phy_cmb_expdb64_pages)
> + expdb_support |= IONIC_EXPDB_64B_WQE;
> + if (lif->ionic->idev.phy_cmb_expdb128_pages)
> + expdb_support |= IONIC_EXPDB_128B_WQE;
> + if (lif->ionic->idev.phy_cmb_expdb256_pages)
> + expdb_support |= IONIC_EXPDB_256B_WQE;
> + if (lif->ionic->idev.phy_cmb_expdb512_pages)
> + expdb_support |= IONIC_EXPDB_512B_WQE;
> +
> + return expdb_support;
> +}
> +
> +void ionic_fill_lif_cfg(struct ionic_lif *lif, struct ionic_lif_cfg *cfg)
> +{
> + union ionic_lif_identity *ident = &lif->ionic->ident.lif;
> +
> + cfg->lif = lif;
> + cfg->hwdev = &lif->ionic->pdev->dev;
> + cfg->lif_index = lif->index;
> + cfg->lif_hw_index = lif->hw_index;
> +
> + cfg->dbid = lif->kern_pid;
> + cfg->dbid_count = le32_to_cpu(lif->ionic->ident.dev.ndbpgs_per_lif);
> + cfg->dbpage = lif->kern_dbpage;
> + cfg->intr_ctrl = lif->ionic->idev.intr_ctrl;
> +
> + cfg->db_phys = lif->ionic->bars[IONIC_PCI_BAR_DBELL].bus_addr;
> +
> + if (IONIC_VERSION(ident->rdma.version, ident->rdma.minor_version) >=
> + IONIC_VERSION(2, 1))
> + cfg->page_size_supported =
> + cpu_to_le64(ident->rdma.page_size_cap);
> + else
> + cfg->page_size_supported = IONIC_PAGE_SIZE_SUPPORTED;
> +
> + cfg->rdma_version = ident->rdma.version;
> + cfg->qp_opcodes = ident->rdma.qp_opcodes;
> + cfg->admin_opcodes = ident->rdma.admin_opcodes;
> +
> + cfg->stats_type = cpu_to_le16(ident->rdma.stats_type);
> + cfg->npts_per_lif = le32_to_cpu(ident->rdma.npts_per_lif);
> + cfg->nmrs_per_lif = le32_to_cpu(ident->rdma.nmrs_per_lif);
> + cfg->nahs_per_lif = le32_to_cpu(ident->rdma.nahs_per_lif);
> +
> + cfg->aq_base = le32_to_cpu(ident->rdma.aq_qtype.qid_base);
> + cfg->cq_base = le32_to_cpu(ident->rdma.cq_qtype.qid_base);
> + cfg->eq_base = le32_to_cpu(ident->rdma.eq_qtype.qid_base);
> +
> + /*
> + * ionic_create_rdma_admin() may reduce aq_count or eq_count if
> + * it is unable to allocate all that were requested.
> + * aq_count is tunable; see ionic_aq_count
> + * eq_count is tunable; see ionic_eq_count
> + */
> + cfg->aq_count = le32_to_cpu(ident->rdma.aq_qtype.qid_count);
> + cfg->eq_count = le32_to_cpu(ident->rdma.eq_qtype.qid_count);
> + cfg->cq_count = le32_to_cpu(ident->rdma.cq_qtype.qid_count);
> + cfg->qp_count = le32_to_cpu(ident->rdma.sq_qtype.qid_count);
> + cfg->dbid_count = le32_to_cpu(lif->ionic->ident.dev.ndbpgs_per_lif);
> +
> + cfg->aq_qtype = ident->rdma.aq_qtype.qtype;
> + cfg->sq_qtype = ident->rdma.sq_qtype.qtype;
> + cfg->rq_qtype = ident->rdma.rq_qtype.qtype;
> + cfg->cq_qtype = ident->rdma.cq_qtype.qtype;
> + cfg->eq_qtype = ident->rdma.eq_qtype.qtype;
> + cfg->udma_qgrp_shift = ident->rdma.udma_shift;
> + cfg->udma_count = 2;
> +
> + cfg->max_stride = ident->rdma.max_stride;
> + cfg->expdb_mask = ionic_get_expdb(lif);
> +
> + cfg->sq_expdb =
> + !!(lif->qtype_info[IONIC_QTYPE_TXQ].features & IONIC_QIDENT_F_EXPDB);
> + cfg->rq_expdb =
> + !!(lif->qtype_info[IONIC_QTYPE_RXQ].features & IONIC_QIDENT_F_EXPDB);
> +}
> +
> +struct net_device *ionic_lif_netdev(struct ionic_lif *lif)
> +{
> + return lif->netdev;
> +}
> +
> +int ionic_version_check(const struct device *dev, struct ionic_lif *lif)
> +{
> + union ionic_lif_identity *ident = &lif->ionic->ident.lif;
> + int rc;
local variable "rc" is not needed here, you can return directly.
> +
> + if (ident->rdma.version < IONIC_MIN_RDMA_VERSION ||
> + ident->rdma.version > IONIC_MAX_RDMA_VERSION) {
> + rc = -EINVAL;
> + dev_err_probe(dev, rc,
> + "ionic_rdma: incompatible version, fw ver %u\n",
> + ident->rdma.version);
> + dev_err_probe(dev, rc,
> + "ionic_rdma: Driver Min Version %u\n",
> + IONIC_MIN_RDMA_VERSION);
> + dev_err_probe(dev, rc,
> + "ionic_rdma: Driver Max Version %u\n",
> + IONIC_MAX_RDMA_VERSION);
> + return rc;
> + }
> +
> + return 0;
> +}
> diff --git a/drivers/infiniband/hw/ionic/ionic_lif_cfg.h b/drivers/infiniband/hw/ionic/ionic_lif_cfg.h
> new file mode 100644
> index 000000000000..b095637c54cf
> --- /dev/null
> +++ b/drivers/infiniband/hw/ionic/ionic_lif_cfg.h
> @@ -0,0 +1,65 @@
> +/* SPDX-License-Identifier: GPL-2.0 */
> +/* Copyright (C) 2018-2025, Advanced Micro Devices, Inc. */
> +
> +#ifndef _IONIC_LIF_CFG_H_
> +
> +#define IONIC_VERSION(a, b) (((a) << 16) + ((b) << 8))
> +#define IONIC_PAGE_SIZE_SUPPORTED 0x40201000 /* 4kb, 2Mb, 1Gb */
> +
> +#define IONIC_EXPDB_64B_WQE BIT(0)
> +#define IONIC_EXPDB_128B_WQE BIT(1)
> +#define IONIC_EXPDB_256B_WQE BIT(2)
> +#define IONIC_EXPDB_512B_WQE BIT(3)
> +
> +struct ionic_lif_cfg {
> + struct device *hwdev;
> + struct ionic_lif *lif;
> +
> + int lif_index;
> + int lif_hw_index;
> +
> + u32 dbid;
> + int dbid_count;
> + u64 __iomem *dbpage;
> + struct ionic_intr __iomem *intr_ctrl;
> + phys_addr_t db_phys;
> +
> + u64 page_size_supported;
> + u32 npts_per_lif;
> + u32 nmrs_per_lif;
> + u32 nahs_per_lif;
> +
> + u32 aq_base;
> + u32 cq_base;
> + u32 eq_base;
> +
> + int aq_count;
> + int eq_count;
> + int cq_count;
> + int qp_count;
> +
> + u16 stats_type;
> + u8 aq_qtype;
> + u8 sq_qtype;
> + u8 rq_qtype;
> + u8 cq_qtype;
> + u8 eq_qtype;
> +
> + u8 udma_count;
> + u8 udma_qgrp_shift;
> +
> + u8 rdma_version;
> + u8 qp_opcodes;
> + u8 admin_opcodes;
> +
> + u8 max_stride;
> + bool sq_expdb;
> + bool rq_expdb;
> + u8 expdb_mask;
> +};
> +
> +int ionic_version_check(const struct device *dev, struct ionic_lif *lif);
> +void ionic_fill_lif_cfg(struct ionic_lif *lif, struct ionic_lif_cfg *cfg);
> +struct net_device *ionic_lif_netdev(struct ionic_lif *lif);
> +
> +#endif /* _IONIC_LIF_CFG_H_ */
> --
> 2.34.1
>
>
--
Regards,
Kalesh AP
On 5/8/25 13:06, Kalesh Anakkur Purayil wrote:
> On Thu, May 8, 2025 at 10:33 AM Abhijit Gangurde
> <abhijit.gangurde@amd.com> wrote:
>> Register auxiliary module to create ibdevice for ionic
>> ethernet adapter.
>>
>> Co-developed-by: Andrew Boyer <andrew.boyer@amd.com>
>> Signed-off-by: Andrew Boyer <andrew.boyer@amd.com>
>> Co-developed-by: Allen Hubbe <allen.hubbe@amd.com>
>> Signed-off-by: Allen Hubbe <allen.hubbe@amd.com>
>> Signed-off-by: Abhijit Gangurde <abhijit.gangurde@amd.com>
>> ---
>> v1->v2
>> - Removed netdev references from ionic RDMA driver
>> - Moved to ionic_lif* instead of void* to convey information between
>> aux devices and drivers.
>>
>> drivers/infiniband/hw/ionic/ionic_ibdev.c | 135 ++++++++++++++++++++
>> drivers/infiniband/hw/ionic/ionic_ibdev.h | 21 +++
>> drivers/infiniband/hw/ionic/ionic_lif_cfg.c | 121 ++++++++++++++++++
>> drivers/infiniband/hw/ionic/ionic_lif_cfg.h | 65 ++++++++++
>> 4 files changed, 342 insertions(+)
>> create mode 100644 drivers/infiniband/hw/ionic/ionic_ibdev.c
>> create mode 100644 drivers/infiniband/hw/ionic/ionic_ibdev.h
>> create mode 100644 drivers/infiniband/hw/ionic/ionic_lif_cfg.c
>> create mode 100644 drivers/infiniband/hw/ionic/ionic_lif_cfg.h
>>
>> diff --git a/drivers/infiniband/hw/ionic/ionic_ibdev.c b/drivers/infiniband/hw/ionic/ionic_ibdev.c
>> new file mode 100644
>> index 000000000000..ca047a789378
>> --- /dev/null
>> +++ b/drivers/infiniband/hw/ionic/ionic_ibdev.c
>> @@ -0,0 +1,135 @@
>> +// SPDX-License-Identifier: GPL-2.0
>> +/* Copyright (C) 2018-2025, Advanced Micro Devices, Inc. */
>> +
>> +#include <linux/module.h>
>> +#include <linux/printk.h>
>> +#include <net/addrconf.h>
>> +
>> +#include "ionic_ibdev.h"
>> +
>> +#define DRIVER_DESCRIPTION "AMD Pensando RoCE HCA driver"
>> +#define DEVICE_DESCRIPTION "AMD Pensando RoCE HCA"
>> +
>> +MODULE_AUTHOR("Allen Hubbe <allen.hubbe@amd.com>");
>> +MODULE_DESCRIPTION(DRIVER_DESCRIPTION);
>> +MODULE_LICENSE("GPL");
>> +MODULE_IMPORT_NS("NET_IONIC");
>> +
>> +static const struct auxiliary_device_id ionic_aux_id_table[] = {
>> + { .name = "ionic.rdma", },
>> + {},
>> +};
>> +
>> +MODULE_DEVICE_TABLE(auxiliary, ionic_aux_id_table);
>> +
>> +static void ionic_destroy_ibdev(struct ionic_ibdev *dev)
>> +{
>> + ib_unregister_device(&dev->ibdev);
>> + ib_dealloc_device(&dev->ibdev);
>> +}
>> +
>> +static struct ionic_ibdev *ionic_create_ibdev(struct ionic_aux_dev *ionic_adev)
>> +{
>> + struct ib_device *ibdev;
>> + struct ionic_ibdev *dev;
>> + int rc;
>> +
>> + rc = ionic_version_check(&ionic_adev->adev.dev, ionic_adev->lif);
>> + if (rc)
>> + goto err_dev;
> You can return directly from here
Sure. Will correct this.
>> +
>> + dev = ib_alloc_device(ionic_ibdev, ibdev);
>> + if (!dev) {
>> + rc = -ENOMEM;
>> + goto err_dev;
> You can return directly from here
Sure. Will correct this.
>> + }
>> +
>> + ionic_fill_lif_cfg(ionic_adev->lif, &dev->lif_cfg);
>> +
>> + ibdev = &dev->ibdev;
>> + ibdev->dev.parent = dev->lif_cfg.hwdev;
>> +
>> + strscpy(ibdev->name, "ionic_%d", IB_DEVICE_NAME_MAX);
>> + strscpy(ibdev->node_desc, DEVICE_DESCRIPTION, IB_DEVICE_NODE_DESC_MAX);
>> +
>> + ibdev->node_type = RDMA_NODE_IB_CA;
>> + ibdev->phys_port_cnt = 1;
>> +
>> + /* the first two eq are reserved for async events */
>> + ibdev->num_comp_vectors = dev->lif_cfg.eq_count - 2;
>> +
>> + addrconf_ifid_eui48((u8 *)&ibdev->node_guid,
>> + ionic_lif_netdev(ionic_adev->lif));
>> +
>> + rc = ib_device_set_netdev(ibdev, ionic_lif_netdev(ionic_adev->lif), 1);
>> + if (rc)
>> + goto err_admin;
>> +
>> + rc = ib_register_device(ibdev, "ionic_%d", ibdev->dev.parent);
>> + if (rc)
>> + goto err_register;
>> +
>> + return dev;
>> +
>> +err_register:
> Unnecessary label
Because of logical split , this used in patch #13.
>> +err_admin:
>> + ib_dealloc_device(&dev->ibdev);
>> +err_dev:
>> + return ERR_PTR(rc);
>> +}
>> +
>> +static int ionic_aux_probe(struct auxiliary_device *adev,
>> + const struct auxiliary_device_id *id)
>> +{
>> + struct ionic_aux_dev *ionic_adev;
>> + struct ionic_ibdev *dev;
>> +
>> + ionic_adev = container_of(adev, struct ionic_aux_dev, adev);
>> + dev = ionic_create_ibdev(ionic_adev);
>> + if (IS_ERR(dev))
>> + return dev_err_probe(&adev->dev, PTR_ERR(dev),
>> + "Failed to register ibdev\n");
>> +
>> + auxiliary_set_drvdata(adev, dev);
>> + ibdev_dbg(&dev->ibdev, "registered\n");
>> +
>> + return 0;
>> +}
>> +
>> +static void ionic_aux_remove(struct auxiliary_device *adev)
>> +{
>> + struct ionic_ibdev *dev = auxiliary_get_drvdata(adev);
>> +
>> + dev_dbg(&adev->dev, "unregister ibdev\n");
>> + ionic_destroy_ibdev(dev);
>> + dev_dbg(&adev->dev, "unregistered\n");
>> +}
>> +
>> +static struct auxiliary_driver ionic_aux_r_driver = {
>> + .name = "rdma",
>> + .probe = ionic_aux_probe,
>> + .remove = ionic_aux_remove,
>> + .id_table = ionic_aux_id_table,
>> +};
>> +
>> +static int __init ionic_mod_init(void)
>> +{
>> + int rc;
>> +
>> + rc = auxiliary_driver_register(&ionic_aux_r_driver);
>> + if (rc)
>> + goto err_aux;
>> +
>> + return 0;
>> +
>> +err_aux:
>> + return rc;
> You can simplify this function as "return
> auxiliary_driver_register(&ionic_aux_r_driver);"
Because of logical split, err_aux this used in patch #9.
>> +}
>> +
>> +static void __exit ionic_mod_exit(void)
>> +{
>> + auxiliary_driver_unregister(&ionic_aux_r_driver);
>> +}
>> +
>> +module_init(ionic_mod_init);
>> +module_exit(ionic_mod_exit);
>> diff --git a/drivers/infiniband/hw/ionic/ionic_ibdev.h b/drivers/infiniband/hw/ionic/ionic_ibdev.h
>> new file mode 100644
>> index 000000000000..e13adff390d7
>> --- /dev/null
>> +++ b/drivers/infiniband/hw/ionic/ionic_ibdev.h
>> @@ -0,0 +1,21 @@
>> +/* SPDX-License-Identifier: GPL-2.0 */
>> +/* Copyright (C) 2018-2025, Advanced Micro Devices, Inc. */
>> +
>> +#ifndef _IONIC_IBDEV_H_
>> +#define _IONIC_IBDEV_H_
>> +
>> +#include <rdma/ib_verbs.h>
>> +#include <ionic_api.h>
>> +
>> +#include "ionic_lif_cfg.h"
>> +
>> +#define IONIC_MIN_RDMA_VERSION 0
>> +#define IONIC_MAX_RDMA_VERSION 2
>> +
>> +struct ionic_ibdev {
>> + struct ib_device ibdev;
>> +
>> + struct ionic_lif_cfg lif_cfg;
>> +};
>> +
>> +#endif /* _IONIC_IBDEV_H_ */
>> diff --git a/drivers/infiniband/hw/ionic/ionic_lif_cfg.c b/drivers/infiniband/hw/ionic/ionic_lif_cfg.c
>> new file mode 100644
>> index 000000000000..a02eb2f5bd45
>> --- /dev/null
>> +++ b/drivers/infiniband/hw/ionic/ionic_lif_cfg.c
>> @@ -0,0 +1,121 @@
>> +// SPDX-License-Identifier: GPL-2.0
>> +/* Copyright (C) 2018-2025, Advanced Micro Devices, Inc. */
>> +
>> +#include <linux/kernel.h>
>> +
>> +#include <ionic.h>
>> +#include <ionic_lif.h>
>> +
>> +#include "ionic_lif_cfg.h"
>> +
>> +#define IONIC_MIN_RDMA_VERSION 0
>> +#define IONIC_MAX_RDMA_VERSION 2
>> +
>> +static u8 ionic_get_expdb(struct ionic_lif *lif)
>> +{
>> + u8 expdb_support = 0;
>> +
>> + if (lif->ionic->idev.phy_cmb_expdb64_pages)
>> + expdb_support |= IONIC_EXPDB_64B_WQE;
>> + if (lif->ionic->idev.phy_cmb_expdb128_pages)
>> + expdb_support |= IONIC_EXPDB_128B_WQE;
>> + if (lif->ionic->idev.phy_cmb_expdb256_pages)
>> + expdb_support |= IONIC_EXPDB_256B_WQE;
>> + if (lif->ionic->idev.phy_cmb_expdb512_pages)
>> + expdb_support |= IONIC_EXPDB_512B_WQE;
>> +
>> + return expdb_support;
>> +}
>> +
>> +void ionic_fill_lif_cfg(struct ionic_lif *lif, struct ionic_lif_cfg *cfg)
>> +{
>> + union ionic_lif_identity *ident = &lif->ionic->ident.lif;
>> +
>> + cfg->lif = lif;
>> + cfg->hwdev = &lif->ionic->pdev->dev;
>> + cfg->lif_index = lif->index;
>> + cfg->lif_hw_index = lif->hw_index;
>> +
>> + cfg->dbid = lif->kern_pid;
>> + cfg->dbid_count = le32_to_cpu(lif->ionic->ident.dev.ndbpgs_per_lif);
>> + cfg->dbpage = lif->kern_dbpage;
>> + cfg->intr_ctrl = lif->ionic->idev.intr_ctrl;
>> +
>> + cfg->db_phys = lif->ionic->bars[IONIC_PCI_BAR_DBELL].bus_addr;
>> +
>> + if (IONIC_VERSION(ident->rdma.version, ident->rdma.minor_version) >=
>> + IONIC_VERSION(2, 1))
>> + cfg->page_size_supported =
>> + cpu_to_le64(ident->rdma.page_size_cap);
>> + else
>> + cfg->page_size_supported = IONIC_PAGE_SIZE_SUPPORTED;
>> +
>> + cfg->rdma_version = ident->rdma.version;
>> + cfg->qp_opcodes = ident->rdma.qp_opcodes;
>> + cfg->admin_opcodes = ident->rdma.admin_opcodes;
>> +
>> + cfg->stats_type = cpu_to_le16(ident->rdma.stats_type);
>> + cfg->npts_per_lif = le32_to_cpu(ident->rdma.npts_per_lif);
>> + cfg->nmrs_per_lif = le32_to_cpu(ident->rdma.nmrs_per_lif);
>> + cfg->nahs_per_lif = le32_to_cpu(ident->rdma.nahs_per_lif);
>> +
>> + cfg->aq_base = le32_to_cpu(ident->rdma.aq_qtype.qid_base);
>> + cfg->cq_base = le32_to_cpu(ident->rdma.cq_qtype.qid_base);
>> + cfg->eq_base = le32_to_cpu(ident->rdma.eq_qtype.qid_base);
>> +
>> + /*
>> + * ionic_create_rdma_admin() may reduce aq_count or eq_count if
>> + * it is unable to allocate all that were requested.
>> + * aq_count is tunable; see ionic_aq_count
>> + * eq_count is tunable; see ionic_eq_count
>> + */
>> + cfg->aq_count = le32_to_cpu(ident->rdma.aq_qtype.qid_count);
>> + cfg->eq_count = le32_to_cpu(ident->rdma.eq_qtype.qid_count);
>> + cfg->cq_count = le32_to_cpu(ident->rdma.cq_qtype.qid_count);
>> + cfg->qp_count = le32_to_cpu(ident->rdma.sq_qtype.qid_count);
>> + cfg->dbid_count = le32_to_cpu(lif->ionic->ident.dev.ndbpgs_per_lif);
>> +
>> + cfg->aq_qtype = ident->rdma.aq_qtype.qtype;
>> + cfg->sq_qtype = ident->rdma.sq_qtype.qtype;
>> + cfg->rq_qtype = ident->rdma.rq_qtype.qtype;
>> + cfg->cq_qtype = ident->rdma.cq_qtype.qtype;
>> + cfg->eq_qtype = ident->rdma.eq_qtype.qtype;
>> + cfg->udma_qgrp_shift = ident->rdma.udma_shift;
>> + cfg->udma_count = 2;
>> +
>> + cfg->max_stride = ident->rdma.max_stride;
>> + cfg->expdb_mask = ionic_get_expdb(lif);
>> +
>> + cfg->sq_expdb =
>> + !!(lif->qtype_info[IONIC_QTYPE_TXQ].features & IONIC_QIDENT_F_EXPDB);
>> + cfg->rq_expdb =
>> + !!(lif->qtype_info[IONIC_QTYPE_RXQ].features & IONIC_QIDENT_F_EXPDB);
>> +}
>> +
>> +struct net_device *ionic_lif_netdev(struct ionic_lif *lif)
>> +{
>> + return lif->netdev;
>> +}
>> +
>> +int ionic_version_check(const struct device *dev, struct ionic_lif *lif)
>> +{
>> + union ionic_lif_identity *ident = &lif->ionic->ident.lif;
>> + int rc;
> local variable "rc" is not needed here, you can return directly.
sure. Will remove it.
Thanks,
Abhijit
>> +
>> + if (ident->rdma.version < IONIC_MIN_RDMA_VERSION ||
>> + ident->rdma.version > IONIC_MAX_RDMA_VERSION) {
>> + rc = -EINVAL;
>> + dev_err_probe(dev, rc,
>> + "ionic_rdma: incompatible version, fw ver %u\n",
>> + ident->rdma.version);
>> + dev_err_probe(dev, rc,
>> + "ionic_rdma: Driver Min Version %u\n",
>> + IONIC_MIN_RDMA_VERSION);
>> + dev_err_probe(dev, rc,
>> + "ionic_rdma: Driver Max Version %u\n",
>> + IONIC_MAX_RDMA_VERSION);
>> + return rc;
>> + }
>> +
>> + return 0;
>> +}
>> diff --git a/drivers/infiniband/hw/ionic/ionic_lif_cfg.h b/drivers/infiniband/hw/ionic/ionic_lif_cfg.h
>> new file mode 100644
>> index 000000000000..b095637c54cf
>> --- /dev/null
>> +++ b/drivers/infiniband/hw/ionic/ionic_lif_cfg.h
>> @@ -0,0 +1,65 @@
>> +/* SPDX-License-Identifier: GPL-2.0 */
>> +/* Copyright (C) 2018-2025, Advanced Micro Devices, Inc. */
>> +
>> +#ifndef _IONIC_LIF_CFG_H_
>> +
>> +#define IONIC_VERSION(a, b) (((a) << 16) + ((b) << 8))
>> +#define IONIC_PAGE_SIZE_SUPPORTED 0x40201000 /* 4kb, 2Mb, 1Gb */
>> +
>> +#define IONIC_EXPDB_64B_WQE BIT(0)
>> +#define IONIC_EXPDB_128B_WQE BIT(1)
>> +#define IONIC_EXPDB_256B_WQE BIT(2)
>> +#define IONIC_EXPDB_512B_WQE BIT(3)
>> +
>> +struct ionic_lif_cfg {
>> + struct device *hwdev;
>> + struct ionic_lif *lif;
>> +
>> + int lif_index;
>> + int lif_hw_index;
>> +
>> + u32 dbid;
>> + int dbid_count;
>> + u64 __iomem *dbpage;
>> + struct ionic_intr __iomem *intr_ctrl;
>> + phys_addr_t db_phys;
>> +
>> + u64 page_size_supported;
>> + u32 npts_per_lif;
>> + u32 nmrs_per_lif;
>> + u32 nahs_per_lif;
>> +
>> + u32 aq_base;
>> + u32 cq_base;
>> + u32 eq_base;
>> +
>> + int aq_count;
>> + int eq_count;
>> + int cq_count;
>> + int qp_count;
>> +
>> + u16 stats_type;
>> + u8 aq_qtype;
>> + u8 sq_qtype;
>> + u8 rq_qtype;
>> + u8 cq_qtype;
>> + u8 eq_qtype;
>> +
>> + u8 udma_count;
>> + u8 udma_qgrp_shift;
>> +
>> + u8 rdma_version;
>> + u8 qp_opcodes;
>> + u8 admin_opcodes;
>> +
>> + u8 max_stride;
>> + bool sq_expdb;
>> + bool rq_expdb;
>> + u8 expdb_mask;
>> +};
>> +
>> +int ionic_version_check(const struct device *dev, struct ionic_lif *lif);
>> +void ionic_fill_lif_cfg(struct ionic_lif *lif, struct ionic_lif_cfg *cfg);
>> +struct net_device *ionic_lif_netdev(struct ionic_lif *lif);
>> +
>> +#endif /* _IONIC_LIF_CFG_H_ */
>> --
>> 2.34.1
>>
>>
>
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