diff options
Diffstat (limited to 'drivers/infiniband/hw/irdma/virtchnl.c')
| -rw-r--r-- | drivers/infiniband/hw/irdma/virtchnl.c | 618 |
1 files changed, 618 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/irdma/virtchnl.c b/drivers/infiniband/hw/irdma/virtchnl.c new file mode 100644 index 000000000000..16ad27247527 --- /dev/null +++ b/drivers/infiniband/hw/irdma/virtchnl.c @@ -0,0 +1,618 @@ +// SPDX-License-Identifier: GPL-2.0 or Linux-OpenIB +/* Copyright (c) 2015 - 2024 Intel Corporation */ + +#include "osdep.h" +#include "hmc.h" +#include "defs.h" +#include "type.h" +#include "protos.h" +#include "virtchnl.h" +#include "ws.h" +#include "i40iw_hw.h" +#include "ig3rdma_hw.h" + +struct vchnl_reg_map_elem { + u16 reg_id; + u16 reg_idx; + bool pg_rel; +}; + +struct vchnl_regfld_map_elem { + u16 regfld_id; + u16 regfld_idx; +}; + +static struct vchnl_reg_map_elem vchnl_reg_map[] = { + {IRDMA_VCHNL_REG_ID_CQPTAIL, IRDMA_CQPTAIL, false}, + {IRDMA_VCHNL_REG_ID_CQPDB, IRDMA_CQPDB, false}, + {IRDMA_VCHNL_REG_ID_CCQPSTATUS, IRDMA_CCQPSTATUS, false}, + {IRDMA_VCHNL_REG_ID_CCQPHIGH, IRDMA_CCQPHIGH, false}, + {IRDMA_VCHNL_REG_ID_CCQPLOW, IRDMA_CCQPLOW, false}, + {IRDMA_VCHNL_REG_ID_CQARM, IRDMA_CQARM, false}, + {IRDMA_VCHNL_REG_ID_CQACK, IRDMA_CQACK, false}, + {IRDMA_VCHNL_REG_ID_AEQALLOC, IRDMA_AEQALLOC, false}, + {IRDMA_VCHNL_REG_ID_CQPERRCODES, IRDMA_CQPERRCODES, false}, + {IRDMA_VCHNL_REG_ID_WQEALLOC, IRDMA_WQEALLOC, false}, + {IRDMA_VCHNL_REG_ID_DB_ADDR_OFFSET, IRDMA_DB_ADDR_OFFSET, false }, + {IRDMA_VCHNL_REG_ID_DYN_CTL, IRDMA_GLINT_DYN_CTL, false }, + {IRDMA_VCHNL_REG_INV_ID, IRDMA_VCHNL_REG_INV_ID, false } +}; + +static struct vchnl_regfld_map_elem vchnl_regfld_map[] = { + {IRDMA_VCHNL_REGFLD_ID_CCQPSTATUS_CQP_OP_ERR, IRDMA_CCQPSTATUS_CCQP_ERR_M}, + {IRDMA_VCHNL_REGFLD_ID_CCQPSTATUS_CCQP_DONE, IRDMA_CCQPSTATUS_CCQP_DONE_M}, + {IRDMA_VCHNL_REGFLD_ID_CQPSQ_STAG_PDID, IRDMA_CQPSQ_STAG_PDID_M}, + {IRDMA_VCHNL_REGFLD_ID_CQPSQ_CQ_CEQID, IRDMA_CQPSQ_CQ_CEQID_M}, + {IRDMA_VCHNL_REGFLD_ID_CQPSQ_CQ_CQID, IRDMA_CQPSQ_CQ_CQID_M}, + {IRDMA_VCHNL_REGFLD_ID_COMMIT_FPM_CQCNT, IRDMA_COMMIT_FPM_CQCNT_M}, + {IRDMA_VCHNL_REGFLD_ID_UPESD_HMCN_ID, IRDMA_CQPSQ_UPESD_HMCFNID_M}, + {IRDMA_VCHNL_REGFLD_INV_ID, IRDMA_VCHNL_REGFLD_INV_ID} +}; + +#define IRDMA_VCHNL_REG_COUNT ARRAY_SIZE(vchnl_reg_map) +#define IRDMA_VCHNL_REGFLD_COUNT ARRAY_SIZE(vchnl_regfld_map) +#define IRDMA_VCHNL_REGFLD_BUF_SIZE \ + (IRDMA_VCHNL_REG_COUNT * sizeof(struct irdma_vchnl_reg_info) + \ + IRDMA_VCHNL_REGFLD_COUNT * sizeof(struct irdma_vchnl_reg_field_info)) +#define IRDMA_REGMAP_RESP_BUF_SIZE (IRDMA_VCHNL_RESP_MIN_SIZE + IRDMA_VCHNL_REGFLD_BUF_SIZE) + +/** + * irdma_sc_vchnl_init - Initialize dev virtchannel and get hw_rev + * @dev: dev structure to update + * @info: virtchannel info parameters to fill into the dev structure + */ +int irdma_sc_vchnl_init(struct irdma_sc_dev *dev, + struct irdma_vchnl_init_info *info) +{ + dev->vchnl_up = true; + dev->privileged = info->privileged; + dev->is_pf = info->is_pf; + dev->hw_attrs.uk_attrs.hw_rev = info->hw_rev; + + if (!dev->privileged) { + int ret = irdma_vchnl_req_get_ver(dev, IRDMA_VCHNL_CHNL_VER_MAX, + &dev->vchnl_ver); + + ibdev_dbg(to_ibdev(dev), + "DEV: Get Channel version ret = %d, version is %u\n", + ret, dev->vchnl_ver); + + if (ret) + return ret; + + ret = irdma_vchnl_req_get_caps(dev); + if (ret) + return ret; + + dev->hw_attrs.uk_attrs.hw_rev = dev->vc_caps.hw_rev; + } + + return 0; +} + +/** + * irdma_vchnl_req_verify_resp - Verify requested response size + * @vchnl_req: vchnl message requested + * @resp_len: response length sent from vchnl peer + */ +static int irdma_vchnl_req_verify_resp(struct irdma_vchnl_req *vchnl_req, + u16 resp_len) +{ + switch (vchnl_req->vchnl_msg->op_code) { + case IRDMA_VCHNL_OP_GET_VER: + case IRDMA_VCHNL_OP_GET_HMC_FCN: + case IRDMA_VCHNL_OP_PUT_HMC_FCN: + if (resp_len != vchnl_req->parm_len) + return -EBADMSG; + break; + case IRDMA_VCHNL_OP_GET_RDMA_CAPS: + if (resp_len < IRDMA_VCHNL_OP_GET_RDMA_CAPS_MIN_SIZE) + return -EBADMSG; + break; + case IRDMA_VCHNL_OP_GET_REG_LAYOUT: + case IRDMA_VCHNL_OP_QUEUE_VECTOR_MAP: + case IRDMA_VCHNL_OP_QUEUE_VECTOR_UNMAP: + case IRDMA_VCHNL_OP_ADD_VPORT: + case IRDMA_VCHNL_OP_DEL_VPORT: + break; + default: + return -EOPNOTSUPP; + } + + return 0; +} + +static void irdma_free_vchnl_req_msg(struct irdma_vchnl_req *vchnl_req) +{ + kfree(vchnl_req->vchnl_msg); +} + +static int irdma_alloc_vchnl_req_msg(struct irdma_vchnl_req *vchnl_req, + struct irdma_vchnl_req_init_info *info) +{ + struct irdma_vchnl_op_buf *vchnl_msg; + + vchnl_msg = kzalloc(IRDMA_VCHNL_MAX_MSG_SIZE, GFP_KERNEL); + + if (!vchnl_msg) + return -ENOMEM; + + vchnl_msg->op_ctx = (uintptr_t)vchnl_req; + vchnl_msg->buf_len = sizeof(*vchnl_msg) + info->req_parm_len; + if (info->req_parm_len) + memcpy(vchnl_msg->buf, info->req_parm, info->req_parm_len); + vchnl_msg->op_code = info->op_code; + vchnl_msg->op_ver = info->op_ver; + + vchnl_req->vchnl_msg = vchnl_msg; + vchnl_req->parm = info->resp_parm; + vchnl_req->parm_len = info->resp_parm_len; + + return 0; +} + +static int irdma_vchnl_req_send_sync(struct irdma_sc_dev *dev, + struct irdma_vchnl_req_init_info *info) +{ + u16 resp_len = sizeof(dev->vc_recv_buf); + struct irdma_vchnl_req vchnl_req = {}; + u16 msg_len; + u8 *msg; + int ret; + + ret = irdma_alloc_vchnl_req_msg(&vchnl_req, info); + if (ret) + return ret; + + msg_len = vchnl_req.vchnl_msg->buf_len; + msg = (u8 *)vchnl_req.vchnl_msg; + + mutex_lock(&dev->vchnl_mutex); + ret = ig3rdma_vchnl_send_sync(dev, msg, msg_len, dev->vc_recv_buf, + &resp_len); + dev->vc_recv_len = resp_len; + if (ret) + goto exit; + + ret = irdma_vchnl_req_get_resp(dev, &vchnl_req); +exit: + mutex_unlock(&dev->vchnl_mutex); + ibdev_dbg(to_ibdev(dev), + "VIRT: virtual channel send %s caller: %pS ret=%d op=%u op_ver=%u req_len=%u parm_len=%u resp_len=%u\n", + !ret ? "SUCCEEDS" : "FAILS", __builtin_return_address(0), + ret, vchnl_req.vchnl_msg->op_code, + vchnl_req.vchnl_msg->op_ver, vchnl_req.vchnl_msg->buf_len, + vchnl_req.parm_len, vchnl_req.resp_len); + irdma_free_vchnl_req_msg(&vchnl_req); + + return ret; +} + +/** + * irdma_vchnl_req_get_reg_layout - Get Register Layout + * @dev: RDMA device pointer + */ +int irdma_vchnl_req_get_reg_layout(struct irdma_sc_dev *dev) +{ + u16 reg_idx, reg_id, tmp_reg_id, regfld_idx, regfld_id, tmp_regfld_id; + struct irdma_vchnl_reg_field_info *regfld_array = NULL; + u8 resp_buffer[IRDMA_REGMAP_RESP_BUF_SIZE] = {}; + struct vchnl_regfld_map_elem *regfld_map_array; + struct irdma_vchnl_req_init_info info = {}; + struct vchnl_reg_map_elem *reg_map_array; + struct irdma_vchnl_reg_info *reg_array; + u8 num_bits, shift_cnt; + u16 buf_len = 0; + u64 bitmask; + u32 rindex; + int ret; + + if (!dev->vchnl_up) + return -EBUSY; + + info.op_code = IRDMA_VCHNL_OP_GET_REG_LAYOUT; + info.op_ver = IRDMA_VCHNL_OP_GET_REG_LAYOUT_V0; + info.resp_parm = resp_buffer; + info.resp_parm_len = sizeof(resp_buffer); + + ret = irdma_vchnl_req_send_sync(dev, &info); + + if (ret) + return ret; + + /* parse the response buffer and update reg info*/ + /* Parse registers till invalid */ + /* Parse register fields till invalid */ + reg_array = (struct irdma_vchnl_reg_info *)resp_buffer; + for (rindex = 0; rindex < IRDMA_VCHNL_REG_COUNT; rindex++) { + buf_len += sizeof(struct irdma_vchnl_reg_info); + if (buf_len >= sizeof(resp_buffer)) + return -ENOMEM; + + regfld_array = + (struct irdma_vchnl_reg_field_info *)®_array[rindex + 1]; + reg_id = reg_array[rindex].reg_id; + if (reg_id == IRDMA_VCHNL_REG_INV_ID) + break; + + reg_id &= ~IRDMA_VCHNL_REG_PAGE_REL; + if (reg_id >= IRDMA_VCHNL_REG_COUNT) + return -EINVAL; + + /* search regmap for register index in hw_regs.*/ + reg_map_array = vchnl_reg_map; + do { + tmp_reg_id = reg_map_array->reg_id; + if (tmp_reg_id == reg_id) + break; + + reg_map_array++; + } while (tmp_reg_id != IRDMA_VCHNL_REG_INV_ID); + if (tmp_reg_id != reg_id) + continue; + + reg_idx = reg_map_array->reg_idx; + + /* Page relative, DB Offset do not need bar offset */ + if (reg_idx == IRDMA_DB_ADDR_OFFSET || + (reg_array[rindex].reg_id & IRDMA_VCHNL_REG_PAGE_REL)) { + dev->hw_regs[reg_idx] = + (u32 __iomem *)(uintptr_t)reg_array[rindex].reg_offset; + continue; + } + + /* Update the local HW struct */ + dev->hw_regs[reg_idx] = ig3rdma_get_reg_addr(dev->hw, + reg_array[rindex].reg_offset); + if (!dev->hw_regs[reg_idx]) + return -EINVAL; + } + + if (!regfld_array) + return -ENOMEM; + + /* set up doorbell variables using mapped DB page */ + dev->wqe_alloc_db = dev->hw_regs[IRDMA_WQEALLOC]; + dev->cq_arm_db = dev->hw_regs[IRDMA_CQARM]; + dev->aeq_alloc_db = dev->hw_regs[IRDMA_AEQALLOC]; + dev->cqp_db = dev->hw_regs[IRDMA_CQPDB]; + dev->cq_ack_db = dev->hw_regs[IRDMA_CQACK]; + + for (rindex = 0; rindex < IRDMA_VCHNL_REGFLD_COUNT; rindex++) { + buf_len += sizeof(struct irdma_vchnl_reg_field_info); + if ((buf_len - 1) > sizeof(resp_buffer)) + break; + + if (regfld_array[rindex].fld_id == IRDMA_VCHNL_REGFLD_INV_ID) + break; + + regfld_id = regfld_array[rindex].fld_id; + regfld_map_array = vchnl_regfld_map; + do { + tmp_regfld_id = regfld_map_array->regfld_id; + if (tmp_regfld_id == regfld_id) + break; + + regfld_map_array++; + } while (tmp_regfld_id != IRDMA_VCHNL_REGFLD_INV_ID); + + if (tmp_regfld_id != regfld_id) + continue; + + regfld_idx = regfld_map_array->regfld_idx; + + num_bits = regfld_array[rindex].fld_bits; + shift_cnt = regfld_array[rindex].fld_shift; + if ((num_bits + shift_cnt > 64) || !num_bits) { + ibdev_dbg(to_ibdev(dev), + "ERR: Invalid field mask id %d bits %d shift %d", + regfld_id, num_bits, shift_cnt); + + continue; + } + + bitmask = (1ULL << num_bits) - 1; + dev->hw_masks[regfld_idx] = bitmask << shift_cnt; + dev->hw_shifts[regfld_idx] = shift_cnt; + } + + return 0; +} + +int irdma_vchnl_req_add_vport(struct irdma_sc_dev *dev, u16 vport_id, + u32 qp1_id, struct irdma_qos *qos) +{ + struct irdma_vchnl_resp_vport_info resp_vport = { 0 }; + struct irdma_vchnl_req_vport_info req_vport = { 0 }; + struct irdma_vchnl_req_init_info info = { 0 }; + int ret, i; + + if (!dev->vchnl_up) + return -EBUSY; + + info.op_code = IRDMA_VCHNL_OP_ADD_VPORT; + info.op_ver = IRDMA_VCHNL_OP_ADD_VPORT_V0; + req_vport.vport_id = vport_id; + req_vport.qp1_id = qp1_id; + info.req_parm_len = sizeof(req_vport); + info.req_parm = &req_vport; + info.resp_parm = &resp_vport; + info.resp_parm_len = sizeof(resp_vport); + + ret = irdma_vchnl_req_send_sync(dev, &info); + if (ret) + return ret; + + for (i = 0; i < IRDMA_MAX_USER_PRIORITY; i++) { + qos[i].qs_handle = resp_vport.qs_handle[i]; + qos[i].valid = true; + } + + return 0; +} + +int irdma_vchnl_req_del_vport(struct irdma_sc_dev *dev, u16 vport_id, u32 qp1_id) +{ + struct irdma_vchnl_req_init_info info = { 0 }; + struct irdma_vchnl_req_vport_info req_vport = { 0 }; + + if (!dev->vchnl_up) + return -EBUSY; + + info.op_code = IRDMA_VCHNL_OP_DEL_VPORT; + info.op_ver = IRDMA_VCHNL_OP_DEL_VPORT_V0; + req_vport.vport_id = vport_id; + req_vport.qp1_id = qp1_id; + info.req_parm_len = sizeof(req_vport); + info.req_parm = &req_vport; + + return irdma_vchnl_req_send_sync(dev, &info); +} + +/** + * irdma_vchnl_req_aeq_vec_map - Map AEQ to vector on this function + * @dev: RDMA device pointer + * @v_idx: vector index + */ +int irdma_vchnl_req_aeq_vec_map(struct irdma_sc_dev *dev, u32 v_idx) +{ + struct irdma_vchnl_req_init_info info = {}; + struct irdma_vchnl_qvlist_info *qvl; + struct irdma_vchnl_qv_info *qv; + u16 qvl_size, num_vectors = 1; + int ret; + + if (!dev->vchnl_up) + return -EBUSY; + + qvl_size = struct_size(qvl, qv_info, num_vectors); + + qvl = kzalloc(qvl_size, GFP_KERNEL); + if (!qvl) + return -ENOMEM; + + qvl->num_vectors = 1; + qv = qvl->qv_info; + + qv->ceq_idx = IRDMA_Q_INVALID_IDX; + qv->v_idx = v_idx; + qv->itr_idx = IRDMA_IDX_ITR0; + + info.op_code = IRDMA_VCHNL_OP_QUEUE_VECTOR_MAP; + info.op_ver = IRDMA_VCHNL_OP_QUEUE_VECTOR_MAP_V0; + info.req_parm = qvl; + info.req_parm_len = qvl_size; + + ret = irdma_vchnl_req_send_sync(dev, &info); + kfree(qvl); + + return ret; +} + +/** + * irdma_vchnl_req_ceq_vec_map - Map CEQ to vector on this function + * @dev: RDMA device pointer + * @ceq_id: CEQ index + * @v_idx: vector index + */ +int irdma_vchnl_req_ceq_vec_map(struct irdma_sc_dev *dev, u16 ceq_id, u32 v_idx) +{ + struct irdma_vchnl_req_init_info info = {}; + struct irdma_vchnl_qvlist_info *qvl; + struct irdma_vchnl_qv_info *qv; + u16 qvl_size, num_vectors = 1; + int ret; + + if (!dev->vchnl_up) + return -EBUSY; + + qvl_size = struct_size(qvl, qv_info, num_vectors); + + qvl = kzalloc(qvl_size, GFP_KERNEL); + if (!qvl) + return -ENOMEM; + + qvl->num_vectors = num_vectors; + qv = qvl->qv_info; + + qv->aeq_idx = IRDMA_Q_INVALID_IDX; + qv->ceq_idx = ceq_id; + qv->v_idx = v_idx; + qv->itr_idx = IRDMA_IDX_ITR0; + + info.op_code = IRDMA_VCHNL_OP_QUEUE_VECTOR_MAP; + info.op_ver = IRDMA_VCHNL_OP_QUEUE_VECTOR_MAP_V0; + info.req_parm = qvl; + info.req_parm_len = qvl_size; + + ret = irdma_vchnl_req_send_sync(dev, &info); + kfree(qvl); + + return ret; +} + +/** + * irdma_vchnl_req_get_ver - Request Channel version + * @dev: RDMA device pointer + * @ver_req: Virtual channel version requested + * @ver_res: Virtual channel version response + */ +int irdma_vchnl_req_get_ver(struct irdma_sc_dev *dev, u16 ver_req, u32 *ver_res) +{ + struct irdma_vchnl_req_init_info info = {}; + int ret; + + if (!dev->vchnl_up) + return -EBUSY; + + info.op_code = IRDMA_VCHNL_OP_GET_VER; + info.op_ver = ver_req; + info.resp_parm = ver_res; + info.resp_parm_len = sizeof(*ver_res); + + ret = irdma_vchnl_req_send_sync(dev, &info); + if (ret) + return ret; + + if (*ver_res < IRDMA_VCHNL_CHNL_VER_MIN) { + ibdev_dbg(to_ibdev(dev), + "VIRT: %s unsupported vchnl version 0x%0x\n", + __func__, *ver_res); + return -EOPNOTSUPP; + } + + return 0; +} + +/** + * irdma_vchnl_req_get_hmc_fcn - Request VF HMC Function + * @dev: RDMA device pointer + */ +int irdma_vchnl_req_get_hmc_fcn(struct irdma_sc_dev *dev) +{ + struct irdma_vchnl_req_hmc_info req_hmc = {}; + struct irdma_vchnl_resp_hmc_info resp_hmc = {}; + struct irdma_vchnl_req_init_info info = {}; + int ret; + + if (!dev->vchnl_up) + return -EBUSY; + + info.op_code = IRDMA_VCHNL_OP_GET_HMC_FCN; + if (dev->hw_attrs.uk_attrs.hw_rev >= IRDMA_GEN_3) { + info.op_ver = IRDMA_VCHNL_OP_GET_HMC_FCN_V2; + req_hmc.protocol_used = dev->protocol_used; + info.req_parm_len = sizeof(req_hmc); + info.req_parm = &req_hmc; + info.resp_parm = &resp_hmc; + info.resp_parm_len = sizeof(resp_hmc); + } + + ret = irdma_vchnl_req_send_sync(dev, &info); + + if (ret) + return ret; + + if (dev->hw_attrs.uk_attrs.hw_rev >= IRDMA_GEN_3) { + int i; + + dev->hmc_fn_id = resp_hmc.hmc_func; + + for (i = 0; i < IRDMA_MAX_USER_PRIORITY; i++) { + dev->qos[i].qs_handle = resp_hmc.qs_handle[i]; + dev->qos[i].valid = true; + } + } + return 0; +} + +/** + * irdma_vchnl_req_put_hmc_fcn - Free VF HMC Function + * @dev: RDMA device pointer + */ +int irdma_vchnl_req_put_hmc_fcn(struct irdma_sc_dev *dev) +{ + struct irdma_vchnl_req_init_info info = {}; + + if (!dev->vchnl_up) + return -EBUSY; + + info.op_code = IRDMA_VCHNL_OP_PUT_HMC_FCN; + info.op_ver = IRDMA_VCHNL_OP_PUT_HMC_FCN_V0; + + return irdma_vchnl_req_send_sync(dev, &info); +} + +/** + * irdma_vchnl_req_get_caps - Request RDMA capabilities + * @dev: RDMA device pointer + */ +int irdma_vchnl_req_get_caps(struct irdma_sc_dev *dev) +{ + struct irdma_vchnl_req_init_info info = {}; + int ret; + + if (!dev->vchnl_up) + return -EBUSY; + + info.op_code = IRDMA_VCHNL_OP_GET_RDMA_CAPS; + info.op_ver = IRDMA_VCHNL_OP_GET_RDMA_CAPS_V0; + info.resp_parm = &dev->vc_caps; + info.resp_parm_len = sizeof(dev->vc_caps); + + ret = irdma_vchnl_req_send_sync(dev, &info); + + if (ret) + return ret; + + if (dev->vc_caps.hw_rev > IRDMA_GEN_MAX || + dev->vc_caps.hw_rev < IRDMA_GEN_2) { + ibdev_dbg(to_ibdev(dev), + "ERR: %s unsupported hw_rev version 0x%0x\n", + __func__, dev->vc_caps.hw_rev); + return -EOPNOTSUPP; + } + + return 0; +} + +/** + * irdma_vchnl_req_get_resp - Receive the inbound vchnl response. + * @dev: Dev pointer + * @vchnl_req: Vchannel request + */ +int irdma_vchnl_req_get_resp(struct irdma_sc_dev *dev, + struct irdma_vchnl_req *vchnl_req) +{ + struct irdma_vchnl_resp_buf *vchnl_msg_resp = + (struct irdma_vchnl_resp_buf *)dev->vc_recv_buf; + u16 resp_len; + int ret; + + if ((uintptr_t)vchnl_req != (uintptr_t)vchnl_msg_resp->op_ctx) { + ibdev_dbg(to_ibdev(dev), + "VIRT: error vchnl context value does not match\n"); + return -EBADMSG; + } + + resp_len = dev->vc_recv_len - sizeof(*vchnl_msg_resp); + resp_len = min(resp_len, vchnl_req->parm_len); + + ret = irdma_vchnl_req_verify_resp(vchnl_req, resp_len); + if (ret) + return ret; + + ret = (int)vchnl_msg_resp->op_ret; + if (ret) + return ret; + + vchnl_req->resp_len = 0; + if (vchnl_req->parm_len && vchnl_req->parm && resp_len) { + memcpy(vchnl_req->parm, vchnl_msg_resp->buf, resp_len); + vchnl_req->resp_len = resp_len; + ibdev_dbg(to_ibdev(dev), "VIRT: Got response, data size %u\n", + resp_len); + } + + return 0; +} |