[net-next PATCH v7 02/10] octeontx2-pf: RVU representor driver

Geetha sowjanya
2024-06-28T13:35:48Z

Adds basic driver for the RVU representor.

Driver on probe does pci specific initialization and
does hw resources configuration. Introduces RVU_ESWITCH
kernel config to enable/disable the driver. Representor
and NIC shares the code but representors netdev support
subset of NIC functionality. Hence "otx2_rep_dev" API
helps to skip the features initialization that are not
supported by the representors.

Signed-off-by: Geetha sowjanya <gakula@marvell.com>
---
.../net/ethernet/marvell/octeontx2/Kconfig | 8 +
.../ethernet/marvell/octeontx2/af/Makefile | 3 +-
.../net/ethernet/marvell/octeontx2/af/mbox.h | 8 +
.../net/ethernet/marvell/octeontx2/af/rvu.h | 11 +
.../ethernet/marvell/octeontx2/af/rvu_nix.c | 21 +-
.../ethernet/marvell/octeontx2/af/rvu_rep.c | 47 ++++
.../ethernet/marvell/octeontx2/nic/Makefile | 2 +
.../marvell/octeontx2/nic/otx2_common.h | 12 +-
.../ethernet/marvell/octeontx2/nic/otx2_pf.c | 17 +-
.../marvell/octeontx2/nic/otx2_txrx.c | 23 +-
.../net/ethernet/marvell/octeontx2/nic/rep.c | 223 ++++++++++++++++++
.../net/ethernet/marvell/octeontx2/nic/rep.h | 31 +++
12 files changed, 388 insertions(+), 18 deletions(-)
create mode 100644 drivers/net/ethernet/marvell/octeontx2/af/rvu_rep.c
create mode 100644 drivers/net/ethernet/marvell/octeontx2/nic/rep.c
create mode 100644 drivers/net/ethernet/marvell/octeontx2/nic/rep.h

diff --git a/drivers/net/ethernet/marvell/octeontx2/Kconfig b/drivers/net/ethernet/marvell/octeontx2/Kconfig
index a32d85d6f599..ff86a5f267c3 100644
--- a/drivers/net/ethernet/marvell/octeontx2/Kconfig
+++ b/drivers/net/ethernet/marvell/octeontx2/Kconfig
@@ -46,3 +46,11 @@ config OCTEONTX2_VF
depends on OCTEONTX2_PF
help
This driver supports Marvell's OcteonTX2 NIC virtual function.
+
+config RVU_ESWITCH
+ tristate "Marvell RVU E-Switch support"
+ depends on OCTEONTX2_PF
+ default m
+ help
+ This driver supports Marvell's RVU E-Switch that
+ provides internal SRIOV packet steering and switching for the
diff --git a/drivers/net/ethernet/marvell/octeontx2/af/Makefile b/drivers/net/ethernet/marvell/octeontx2/af/Makefile
index 3cf4c8285c90..ccea37847df8 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/Makefile
+++ b/drivers/net/ethernet/marvell/octeontx2/af/Makefile
@@ -11,4 +11,5 @@ rvu_mbox-y := mbox.o rvu_trace.o
rvu_af-y := cgx.o rvu.o rvu_cgx.o rvu_npa.o rvu_nix.o \
rvu_reg.o rvu_npc.o rvu_debugfs.o ptp.o rvu_npc_fs.o \
rvu_cpt.o rvu_devlink.o rpm.o rvu_cn10k.o rvu_switch.o \
- rvu_sdp.o rvu_npc_hash.o mcs.o mcs_rvu_if.o mcs_cnf10kb.o
+ rvu_sdp.o rvu_npc_hash.o mcs.o mcs_rvu_if.o mcs_cnf10kb.o \
+ rvu_rep.o
diff --git a/drivers/net/ethernet/marvell/octeontx2/af/mbox.h b/drivers/net/ethernet/marvell/octeontx2/af/mbox.h
index e6d7d6e862c0..befb327e8aff 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/mbox.h
+++ b/drivers/net/ethernet/marvell/octeontx2/af/mbox.h
@@ -144,6 +144,7 @@ M(LMTST_TBL_SETUP, 0x00a, lmtst_tbl_setup, lmtst_tbl_setup_req, \
msg_rsp) \
M(SET_VF_PERM, 0x00b, set_vf_perm, set_vf_perm, msg_rsp) \
M(PTP_GET_CAP, 0x00c, ptp_get_cap, msg_req, ptp_get_cap_rsp) \
+M(GET_REP_CNT, 0x00d, get_rep_cnt, msg_req, get_rep_cnt_rsp) \
/* CGX mbox IDs (range 0x200 - 0x3FF) */ \
M(CGX_START_RXTX, 0x200, cgx_start_rxtx, msg_req, msg_rsp) \
M(CGX_STOP_RXTX, 0x201, cgx_stop_rxtx, msg_req, msg_rsp) \
@@ -1525,6 +1526,13 @@ struct ptp_get_cap_rsp {
u64 cap;
};

+struct get_rep_cnt_rsp {
+ struct mbox_msghdr hdr;
+ u16 rep_cnt;
+ u16 rep_pf_map[64];
+ u64 rsvd;
+};
+
struct flow_msg {
unsigned char dmac[6];
unsigned char smac[6];
diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu.h b/drivers/net/ethernet/marvell/octeontx2/af/rvu.h
index 30efa5607c58..cbdc7aeaccfc 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/rvu.h
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu.h
@@ -594,6 +594,9 @@ struct rvu {
spinlock_t cpt_intr_lock;

struct mutex mbox_lock; /* Serialize mbox up and down msgs */
+ u16 rep_pcifunc;
+ int rep_cnt;
+ u16 *rep2pfvf_map;
};

static inline void rvu_write64(struct rvu *rvu, u64 block, u64 offset, u64 val)
@@ -822,6 +825,14 @@ bool is_sdp_pfvf(u16 pcifunc);
bool is_sdp_pf(u16 pcifunc);
bool is_sdp_vf(struct rvu *rvu, u16 pcifunc);

+static inline bool is_rep_dev(struct rvu *rvu, u16 pcifunc)
+{
+ if (rvu->rep_pcifunc && rvu->rep_pcifunc == pcifunc)
+ return true;
+
+ return false;
+}
+
/* CGX APIs */
static inline bool is_pf_cgxmapped(struct rvu *rvu, u8 pf)
{
diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c
index 785ef71a5ead..02d83c4958d9 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c
@@ -329,7 +329,9 @@ static bool is_valid_txschq(struct rvu *rvu, int blkaddr,

/* TLs aggegating traffic are shared across PF and VFs */
if (lvl >= hw->cap.nix_tx_aggr_lvl) {
- if (rvu_get_pf(map_func) != rvu_get_pf(pcifunc))
+ if ((nix_get_tx_link(rvu, map_func) !=
+ nix_get_tx_link(rvu, pcifunc)) &&
+ (rvu_get_pf(map_func) != rvu_get_pf(pcifunc)))
return false;
else
return true;
@@ -1634,6 +1636,12 @@ int rvu_mbox_handler_nix_lf_alloc(struct rvu *rvu,
cfg = NPC_TX_DEF_PKIND;
rvu_write64(rvu, blkaddr, NIX_AF_LFX_TX_PARSE_CFG(nixlf), cfg);

+ if (is_rep_dev(rvu, pcifunc)) {
+ pfvf->tx_chan_base = RVU_SWITCH_LBK_CHAN;
+ pfvf->tx_chan_cnt = 1;
+ goto exit;
+ }
+
intf = is_lbk_vf(rvu, pcifunc) ? NIX_INTF_TYPE_LBK : NIX_INTF_TYPE_CGX;
if (is_sdp_pfvf(pcifunc))
intf = NIX_INTF_TYPE_SDP;
@@ -1704,6 +1712,9 @@ int rvu_mbox_handler_nix_lf_free(struct rvu *rvu, struct nix_lf_free_req *req,
if (nixlf < 0)
return NIX_AF_ERR_AF_LF_INVALID;

+ if (is_rep_dev(rvu, pcifunc))
+ goto free_lf;
+
if (req->flags & NIX_LF_DISABLE_FLOWS)
rvu_npc_disable_mcam_entries(rvu, pcifunc, nixlf);
else
@@ -1715,6 +1726,7 @@ int rvu_mbox_handler_nix_lf_free(struct rvu *rvu, struct nix_lf_free_req *req,

nix_interface_deinit(rvu, pcifunc, nixlf);

+free_lf:
/* Reset this NIX LF */
err = rvu_lf_reset(rvu, block, nixlf);
if (err) {
@@ -2010,7 +2022,8 @@ static void nix_get_txschq_range(struct rvu *rvu, u16 pcifunc,
struct rvu_hwinfo *hw = rvu->hw;
int pf = rvu_get_pf(pcifunc);

- if (is_lbk_vf(rvu, pcifunc)) { /* LBK links */
+ /* LBK links */
+ if (is_lbk_vf(rvu, pcifunc) || is_rep_dev(rvu, pcifunc)) {
*start = hw->cap.nix_txsch_per_cgx_lmac * link;
*end = *start + hw->cap.nix_txsch_per_lbk_lmac;
} else if (is_pf_cgxmapped(rvu, pf)) { /* CGX links */
@@ -4523,7 +4536,7 @@ int rvu_mbox_handler_nix_set_hw_frs(struct rvu *rvu, struct nix_frs_cfg *req,
if (!nix_hw)
return NIX_AF_ERR_INVALID_NIXBLK;

- if (is_lbk_vf(rvu, pcifunc))
+ if (is_lbk_vf(rvu, pcifunc) || is_rep_dev(rvu, pcifunc))
rvu_get_lbk_link_max_frs(rvu, &max_mtu);
else
rvu_get_lmac_link_max_frs(rvu, &max_mtu);
@@ -4551,6 +4564,8 @@ int rvu_mbox_handler_nix_set_hw_frs(struct rvu *rvu, struct nix_frs_cfg *req,
/* For VFs of PF0 ingress is LBK port, so config LBK link */
pfvf = rvu_get_pfvf(rvu, pcifunc);
link = hw->cgx_links + pfvf->lbkid;
+ } else if (is_rep_dev(rvu, pcifunc)) {
+ link = hw->cgx_links + 0;
}

if (link < 0)
diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_rep.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu_rep.c
new file mode 100644
index 000000000000..cf13c5f0a3c5
--- /dev/null
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_rep.c
@@ -0,0 +1,47 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Marvell RVU Admin Function driver
+ *
+ * Copyright (C) 2024 Marvell.
+ *
+ */
+
+#include <linux/types.h>
+#include <linux/device.h>
+#include <linux/module.h>
+#include <linux/pci.h>
+
+#include "rvu.h"
+#include "rvu_reg.h"
+
+int rvu_mbox_handler_get_rep_cnt(struct rvu *rvu, struct msg_req *req,
+ struct get_rep_cnt_rsp *rsp)
+{
+ int pf, vf, numvfs, hwvf, rep = 0;
+ u16 pcifunc;
+
+ rvu->rep_pcifunc = req->hdr.pcifunc;
+ rsp->rep_cnt = rvu->cgx_mapped_pfs + rvu->cgx_mapped_vfs;
+ rvu->rep_cnt = rsp->rep_cnt;
+
+ rvu->rep2pfvf_map = devm_kzalloc(rvu->dev, rvu->rep_cnt *
+ sizeof(u16), GFP_KERNEL);
+ if (!rvu->rep2pfvf_map)
+ return -ENOMEM;
+
+ for (pf = 0; pf < rvu->hw->total_pfs; pf++) {
+ if (!is_pf_cgxmapped(rvu, pf))
+ continue;
+ pcifunc = pf << RVU_PFVF_PF_SHIFT;
+ rvu->rep2pfvf_map[rep] = pcifunc;
+ rsp->rep_pf_map[rep] = pcifunc;
+ rep++;
+ rvu_get_pf_numvfs(rvu, pf, &numvfs, &hwvf);
+ for (vf = 0; vf < numvfs; vf++) {
+ rvu->rep2pfvf_map[rep] = pcifunc |
+ ((vf + 1) & RVU_PFVF_FUNC_MASK);
+ rsp->rep_pf_map[rep] = rvu->rep2pfvf_map[rep];
+ rep++;
+ }
+ }
+ return 0;
+}
diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/Makefile b/drivers/net/ethernet/marvell/octeontx2/nic/Makefile
index 64a97a0a10ed..dbc971266865 100644
--- a/drivers/net/ethernet/marvell/octeontx2/nic/Makefile
+++ b/drivers/net/ethernet/marvell/octeontx2/nic/Makefile
@@ -5,11 +5,13 @@

obj-$(CONFIG_OCTEONTX2_PF) += rvu_nicpf.o otx2_ptp.o
obj-$(CONFIG_OCTEONTX2_VF) += rvu_nicvf.o otx2_ptp.o
+obj-$(CONFIG_RVU_ESWITCH) += rvu_rep.o

rvu_nicpf-y := otx2_pf.o otx2_common.o otx2_txrx.o otx2_ethtool.o \
otx2_flows.o otx2_tc.o cn10k.o otx2_dmac_flt.o \
otx2_devlink.o qos_sq.o qos.o
rvu_nicvf-y := otx2_vf.o
+rvu_rep-y := rep.o

rvu_nicpf-$(CONFIG_DCB) += otx2_dcbnl.o
rvu_nicpf-$(CONFIG_MACSEC) += cn10k_macsec.o
diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.h b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.h
index 772fe01bdf98..d297138c356e 100644
--- a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.h
+++ b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.h
@@ -29,6 +29,7 @@
#include "otx2_devlink.h"
#include <rvu_trace.h>
#include "qos.h"
+#include "rep.h"

/* IPv4 flag more fragment bit */
#define IPV4_FLAG_MORE 0x20
@@ -439,6 +440,7 @@ struct otx2_nic {
#define OTX2_FLAG_PTP_ONESTEP_SYNC BIT_ULL(15)
#define OTX2_FLAG_ADPTV_INT_COAL_ENABLED BIT_ULL(16)
#define OTX2_FLAG_TC_MARK_ENABLED BIT_ULL(17)
+#define OTX2_FLAG_REP_MODE_ENABLED BIT_ULL(18)
u64 flags;
u64 *cq_op_addr;

@@ -506,11 +508,19 @@ struct otx2_nic {
#if IS_ENABLED(CONFIG_MACSEC)
struct cn10k_mcs_cfg *macsec_cfg;
#endif
+
+#if IS_ENABLED(CONFIG_RVU_ESWITCH)
+ struct rep_dev **reps;
+ int rep_cnt;
+ u16 rep_pf_map[RVU_MAX_REP];
+ u16 esw_mode;
+#endif
};

static inline bool is_otx2_lbkvf(struct pci_dev *pdev)
{
- return pdev->device == PCI_DEVID_OCTEONTX2_RVU_AFVF;
+ return (pdev->device == PCI_DEVID_OCTEONTX2_RVU_AFVF) ||
+ (pdev->device == PCI_DEVID_RVU_REP);
}

static inline bool is_96xx_A0(struct pci_dev *pdev)
diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c
index 2b2afcc4b921..8078d1c1fff9 100644
--- a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c
+++ b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c
@@ -1502,10 +1502,11 @@ int otx2_init_hw_resources(struct otx2_nic *pf)
hw->sqpool_cnt = otx2_get_total_tx_queues(pf);
hw->pool_cnt = hw->rqpool_cnt + hw->sqpool_cnt;

- /* Maximum hardware supported transmit length */
- pf->tx_max_pktlen = pf->netdev->max_mtu + OTX2_ETH_HLEN;
-
- pf->rbsize = otx2_get_rbuf_size(pf, pf->netdev->mtu);
+ if (!otx2_rep_dev(pf->pdev)) {
+ /* Maximum hardware supported transmit length */
+ pf->tx_max_pktlen = pf->netdev->max_mtu + OTX2_ETH_HLEN;
+ pf->rbsize = otx2_get_rbuf_size(pf, pf->netdev->mtu);
+ }

mutex_lock(&mbox->lock);
/* NPA init */
@@ -1634,11 +1635,12 @@ void otx2_free_hw_resources(struct otx2_nic *pf)
otx2_pfc_txschq_stop(pf);
#endif

- otx2_clean_qos_queues(pf);
+ if (!otx2_rep_dev(pf->pdev))
+ otx2_clean_qos_queues(pf);

mutex_lock(&mbox->lock);
/* Disable backpressure */
- if (!(pf->pcifunc & RVU_PFVF_FUNC_MASK))
+ if (!is_otx2_lbkvf(pf->pdev))
otx2_nix_config_bp(pf, false);
mutex_unlock(&mbox->lock);

@@ -1670,7 +1672,8 @@ void otx2_free_hw_resources(struct otx2_nic *pf)
otx2_free_cq_res(pf);

/* Free all ingress bandwidth profiles allocated */
- cn10k_free_all_ipolicers(pf);
+ if (!otx2_rep_dev(pf->pdev))
+ cn10k_free_all_ipolicers(pf);

mutex_lock(&mbox->lock);
/* Reset NIX LF */
diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_txrx.c b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_txrx.c
index fbd9fe98259f..5dcdd8b65837 100644
--- a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_txrx.c
+++ b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_txrx.c
@@ -375,11 +375,13 @@ static void otx2_rcv_pkt_handler(struct otx2_nic *pfvf,
}
start += sizeof(*sg);
}
- otx2_set_rxhash(pfvf, cqe, skb);

- skb_record_rx_queue(skb, cq->cq_idx);
- if (pfvf->netdev->features & NETIF_F_RXCSUM)
- skb->ip_summed = CHECKSUM_UNNECESSARY;
+ if (!(pfvf->flags & OTX2_FLAG_REP_MODE_ENABLED)) {
+ otx2_set_rxhash(pfvf, cqe, skb);
+ skb_record_rx_queue(skb, cq->cq_idx);
+ if (pfvf->netdev->features & NETIF_F_RXCSUM)
+ skb->ip_summed = CHECKSUM_UNNECESSARY;
+ }

if (pfvf->flags & OTX2_FLAG_TC_MARK_ENABLED)
skb->mark = parse->match_id;
@@ -466,7 +468,13 @@ static int otx2_tx_napi_handler(struct otx2_nic *pfvf,
process_cqe:
qidx = cq->cq_idx - pfvf->hw.rx_queues;
sq = &pfvf->qset.sq[qidx];
- ndev = pfvf->netdev;
+
+#if IS_ENABLED(CONFIG_RVU_ESWITCH)
+ if (pfvf->flags & OTX2_FLAG_REP_MODE_ENABLED)
+ ndev = pfvf->reps[qidx]->netdev;
+ else
+#endif
+ ndev = pfvf->netdev;

while (likely(processed_cqe < budget) && cq->pend_cqe) {
cqe = (struct nix_cqe_tx_s *)otx2_get_next_cqe(cq);
@@ -504,7 +512,10 @@ static int otx2_tx_napi_handler(struct otx2_nic *pfvf,

if (qidx >= pfvf->hw.tx_queues)
qidx -= pfvf->hw.xdp_queues;
- txq = netdev_get_tx_queue(pfvf->netdev, qidx);
+
+ if (pfvf->flags & OTX2_FLAG_REP_MODE_ENABLED)
+ qidx = 0;
+ txq = netdev_get_tx_queue(ndev, qidx);
netdev_tx_completed_queue(txq, tx_pkts, tx_bytes);
/* Check if queue was stopped earlier due to ring full */
smp_mb();
diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/rep.c b/drivers/net/ethernet/marvell/octeontx2/nic/rep.c
new file mode 100644
index 000000000000..b0a0080e50d7
--- /dev/null
+++ b/drivers/net/ethernet/marvell/octeontx2/nic/rep.c
@@ -0,0 +1,223 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Marvell RVU representor driver
+ *
+ * Copyright (C) 2024 Marvell.
+ *
+ */
+
+#include <linux/etherdevice.h>
+#include <linux/module.h>
+#include <linux/pci.h>
+#include <linux/net_tstamp.h>
+
+#include "otx2_common.h"
+#include "cn10k.h"
+#include "otx2_reg.h"
+#include "rep.h"
+
+#define DRV_NAME "rvu_rep"
+#define DRV_STRING "Marvell RVU Representor Driver"
+
+static const struct pci_device_id rvu_rep_id_table[] = {
+ { PCI_DEVICE(PCI_VENDOR_ID_CAVIUM, PCI_DEVID_RVU_REP) },
+ { }
+};
+
+MODULE_AUTHOR("Marvell International Ltd.");
+MODULE_DESCRIPTION(DRV_STRING);
+MODULE_LICENSE("GPL");
+MODULE_DEVICE_TABLE(pci, rvu_rep_id_table);
+
+static void rvu_rep_rsrc_free(struct otx2_nic *priv)
+{
+ struct otx2_qset *qset = &priv->qset;
+ struct delayed_work *work;
+ int wrk;
+
+ for (wrk = 0; wrk < priv->qset.cq_cnt; wrk++) {
+ work = &priv->refill_wrk[wrk].pool_refill_work;
+ cancel_delayed_work_sync(work);
+ }
+ devm_kfree(priv->dev, priv->refill_wrk);
+
+ otx2_free_hw_resources(priv);
+ otx2_free_queue_mem(qset);
+}
+
+static int rvu_rep_rsrc_init(struct otx2_nic *priv)
+{
+ struct otx2_qset *qset = &priv->qset;
+ int err;
+
+ err = otx2_alloc_queue_mem(priv);
+ if (err)
+ return err;
+
+ priv->hw.max_mtu = otx2_get_max_mtu(priv);
+ priv->tx_max_pktlen = priv->hw.max_mtu + OTX2_ETH_HLEN;
+ priv->rbsize = ALIGN(priv->hw.rbuf_len, OTX2_ALIGN) + OTX2_HEAD_ROOM;
+
+ err = otx2_init_hw_resources(priv);
+ if (err)
+ goto err_free_rsrc;
+
+ /* Set maximum frame size allowed in HW */
+ err = otx2_hw_set_mtu(priv, priv->hw.max_mtu);
+ if (err) {
+ dev_err(priv->dev, "Failed to set HW MTU\n");
+ goto err_free_rsrc;
+ }
+ return 0;
+
+err_free_rsrc:
+ otx2_free_hw_resources(priv);
+ otx2_free_queue_mem(qset);
+ return err;
+}
+
+static int rvu_get_rep_cnt(struct otx2_nic *priv)
+{
+ struct get_rep_cnt_rsp *rsp;
+ struct mbox_msghdr *msghdr;
+ struct msg_req *req;
+ int err, rep;
+
+ mutex_lock(&priv->mbox.lock);
+ req = otx2_mbox_alloc_msg_get_rep_cnt(&priv->mbox);
+ if (!req) {
+ mutex_unlock(&priv->mbox.lock);
+ return -ENOMEM;
+ }
+ err = otx2_sync_mbox_msg(&priv->mbox);
+ if (err)
+ goto exit;
+
+ msghdr = otx2_mbox_get_rsp(&priv->mbox.mbox, 0, &req->hdr);
+ if (IS_ERR(msghdr)) {
+ err = PTR_ERR(msghdr);
+ goto exit;
+ }
+
+ rsp = (struct get_rep_cnt_rsp *)msghdr;
+ priv->hw.tx_queues = rsp->rep_cnt;
+ priv->hw.rx_queues = rsp->rep_cnt;
+ priv->rep_cnt = rsp->rep_cnt;
+ for (rep = 0; rep < priv->rep_cnt; rep++)
+ priv->rep_pf_map[rep] = rsp->rep_pf_map[rep];
+
+exit:
+ mutex_unlock(&priv->mbox.lock);
+ return err;
+}
+
+static int rvu_rep_probe(struct pci_dev *pdev, const struct pci_device_id *id)
+{
+ struct device *dev = &pdev->dev;
+ struct otx2_nic *priv;
+ struct otx2_hw *hw;
+ int err;
+
+ err = pcim_enable_device(pdev);
+ if (err) {
+ dev_err(dev, "Failed to enable PCI device\n");
+ return err;
+ }
+
+ err = pci_request_regions(pdev, DRV_NAME);
+ if (err) {
+ dev_err(dev, "PCI request regions failed 0x%x\n", err);
+ return err;
+ }
+
+ err = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(48));
+ if (err) {
+ dev_err(dev, "DMA mask config failed, abort\n");
+ goto err_release_regions;
+ }
+
+ pci_set_master(pdev);
+
+ priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
+ if (!priv) {
+ err = -ENOMEM;
+ goto err_release_regions;
+ }
+
+ pci_set_drvdata(pdev, priv);
+ priv->pdev = pdev;
+ priv->dev = dev;
+ priv->flags |= OTX2_FLAG_INTF_DOWN;
+ priv->flags |= OTX2_FLAG_REP_MODE_ENABLED;
+
+ hw = &priv->hw;
+ hw->pdev = pdev;
+ hw->max_queues = OTX2_MAX_CQ_CNT;
+ hw->rbuf_len = OTX2_DEFAULT_RBUF_LEN;
+ hw->xqe_size = 128;
+
+ err = otx2_init_rsrc(pdev, priv);
+ if (err)
+ goto err_release_regions;
+
+ err = rvu_get_rep_cnt(priv);
+ if (err)
+ goto err_detach_rsrc;
+
+ err = rvu_rep_rsrc_init(priv);
+ if (err)
+ goto err_detach_rsrc;
+
+ return 0;
+
+err_detach_rsrc:
+ if (priv->hw.lmt_info)
+ free_percpu(priv->hw.lmt_info);
+ if (test_bit(CN10K_LMTST, &priv->hw.cap_flag))
+ qmem_free(priv->dev, priv->dync_lmt);
+ otx2_detach_resources(&priv->mbox);
+ otx2_disable_mbox_intr(priv);
+ otx2_pfaf_mbox_destroy(priv);
+ pci_free_irq_vectors(pdev);
+err_release_regions:
+ pci_set_drvdata(pdev, NULL);
+ pci_release_regions(pdev);
+ return err;
+}
+
+static void rvu_rep_remove(struct pci_dev *pdev)
+{
+ struct otx2_nic *priv = pci_get_drvdata(pdev);
+
+ rvu_rep_rsrc_free(priv);
+ otx2_detach_resources(&priv->mbox);
+ if (priv->hw.lmt_info)
+ free_percpu(priv->hw.lmt_info);
+ if (test_bit(CN10K_LMTST, &priv->hw.cap_flag))
+ qmem_free(priv->dev, priv->dync_lmt);
+ otx2_disable_mbox_intr(priv);
+ otx2_pfaf_mbox_destroy(priv);
+ pci_free_irq_vectors(priv->pdev);
+ pci_set_drvdata(pdev, NULL);
+ pci_release_regions(pdev);
+}
+
+static struct pci_driver rvu_rep_driver = {
+ .name = DRV_NAME,
+ .id_table = rvu_rep_id_table,
+ .probe = rvu_rep_probe,
+ .remove = rvu_rep_remove,
+ .shutdown = rvu_rep_remove,
+};
+
+static int __init rvu_rep_init_module(void)
+{
+ return pci_register_driver(&rvu_rep_driver);
+}
+
+static void __exit rvu_rep_cleanup_module(void)
+{
+ pci_unregister_driver(&rvu_rep_driver);
+}
+
+module_init(rvu_rep_init_module);
+module_exit(rvu_rep_cleanup_module);
diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/rep.h b/drivers/net/ethernet/marvell/octeontx2/nic/rep.h
new file mode 100644
index 000000000000..565e75628df2
--- /dev/null
+++ b/drivers/net/ethernet/marvell/octeontx2/nic/rep.h
@@ -0,0 +1,31 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Marvell RVU REPRESENTOR driver
+ *
+ * Copyright (C) 2024 Marvell.
+ *
+ */
+
+#ifndef REP_H
+#define REP_H
+
+#include <linux/pci.h>
+
+#include "otx2_reg.h"
+#include "otx2_txrx.h"
+#include "otx2_common.h"
+
+#define PCI_DEVID_RVU_REP 0xA0E0
+
+#define RVU_MAX_REP OTX2_MAX_CQ_CNT
+struct rep_dev {
+ struct otx2_nic *mdev;
+ struct net_device *netdev;
+ u16 rep_id;
+ u16 pcifunc;
+};
+
+static inline bool otx2_rep_dev(struct pci_dev *pdev)
+{
+ return pdev->device == PCI_DEVID_RVU_REP;
+}
+#endif /* REP_H */
--
2.25.1