1 // SPDX-License-Identifier: GPL-2.0
2 /* Copyright (C) 2021, Intel Corporation. */
4 /* Inter-Driver Communication */
7 #include "ice_dcb_lib.h"
10 * ice_get_auxiliary_drv - retrieve iidc_auxiliary_drv struct
11 * @pf: pointer to PF struct
13 * This function has to be called with a device_lock on the
14 * pf->adev.dev to avoid race conditions.
16 static struct iidc_auxiliary_drv *ice_get_auxiliary_drv(struct ice_pf *pf)
18 struct auxiliary_device *adev;
21 if (!adev || !adev->dev.driver)
24 return container_of(adev->dev.driver, struct iidc_auxiliary_drv,
29 * ice_send_event_to_aux - send event to RDMA AUX driver
30 * @pf: pointer to PF struct
31 * @event: event struct
33 void ice_send_event_to_aux(struct ice_pf *pf, struct iidc_event *event)
35 struct iidc_auxiliary_drv *iadrv;
40 device_lock(&pf->adev->dev);
41 iadrv = ice_get_auxiliary_drv(pf);
42 if (iadrv && iadrv->event_handler)
43 iadrv->event_handler(pf, event);
44 device_unlock(&pf->adev->dev);
48 * ice_find_vsi - Find the VSI from VSI ID
49 * @pf: The PF pointer to search in
50 * @vsi_num: The VSI ID to search for
52 static struct ice_vsi *ice_find_vsi(struct ice_pf *pf, u16 vsi_num)
56 ice_for_each_vsi(pf, i)
57 if (pf->vsi[i] && pf->vsi[i]->vsi_num == vsi_num)
63 * ice_add_rdma_qset - Add Leaf Node for RDMA Qset
65 * @qset: Resource to be allocated
67 int ice_add_rdma_qset(struct ice_pf *pf, struct iidc_rdma_qset_params *qset)
69 u16 max_rdmaqs[ICE_MAX_TRAFFIC_CLASS];
77 if (WARN_ON(!pf || !qset))
80 dev = ice_pf_to_dev(pf);
82 if (!test_bit(ICE_FLAG_RDMA_ENA, pf->flags))
85 vsi = ice_get_main_vsi(pf);
87 dev_err(dev, "RDMA QSet invalid VSI\n");
91 ice_for_each_traffic_class(i)
94 max_rdmaqs[qset->tc]++;
95 qs_handle = qset->qs_handle;
97 status = ice_cfg_vsi_rdma(vsi->port_info, vsi->idx, vsi->tc_cfg.ena_tc,
100 dev_err(dev, "Failed VSI RDMA Qset config\n");
104 status = ice_ena_vsi_rdma_qset(vsi->port_info, vsi->idx, qset->tc,
105 &qs_handle, 1, &qset_teid);
107 dev_err(dev, "Failed VSI RDMA Qset enable\n");
110 vsi->qset_handle[qset->tc] = qset->qs_handle;
111 qset->teid = qset_teid;
115 EXPORT_SYMBOL_GPL(ice_add_rdma_qset);
118 * ice_del_rdma_qset - Delete leaf node for RDMA Qset
120 * @qset: Resource to be freed
122 int ice_del_rdma_qset(struct ice_pf *pf, struct iidc_rdma_qset_params *qset)
128 if (WARN_ON(!pf || !qset))
131 vsi = ice_find_vsi(pf, qset->vport_id);
133 dev_err(ice_pf_to_dev(pf), "RDMA Invalid VSI\n");
137 q_id = qset->qs_handle;
140 vsi->qset_handle[qset->tc] = 0;
142 return ice_dis_vsi_rdma_qset(vsi->port_info, 1, &teid, &q_id);
144 EXPORT_SYMBOL_GPL(ice_del_rdma_qset);
147 * ice_rdma_request_reset - accept request from RDMA to perform a reset
149 * @reset_type: type of reset
151 int ice_rdma_request_reset(struct ice_pf *pf, enum iidc_reset_type reset_type)
153 enum ice_reset_req reset;
158 switch (reset_type) {
160 reset = ICE_RESET_PFR;
163 reset = ICE_RESET_CORER;
166 reset = ICE_RESET_GLOBR;
169 dev_err(ice_pf_to_dev(pf), "incorrect reset request\n");
173 return ice_schedule_reset(pf, reset);
175 EXPORT_SYMBOL_GPL(ice_rdma_request_reset);
178 * ice_rdma_update_vsi_filter - update main VSI filters for RDMA
179 * @pf: pointer to struct for PF
180 * @vsi_id: VSI HW idx to update filter on
181 * @enable: bool whether to enable or disable filters
183 int ice_rdma_update_vsi_filter(struct ice_pf *pf, u16 vsi_id, bool enable)
191 vsi = ice_find_vsi(pf, vsi_id);
195 status = ice_cfg_rdma_fltr(&pf->hw, vsi->idx, enable);
197 dev_err(ice_pf_to_dev(pf), "Failed to %sable RDMA filtering\n",
198 enable ? "en" : "dis");
201 vsi->info.q_opt_flags |= ICE_AQ_VSI_Q_OPT_PE_FLTR_EN;
203 vsi->info.q_opt_flags &= ~ICE_AQ_VSI_Q_OPT_PE_FLTR_EN;
208 EXPORT_SYMBOL_GPL(ice_rdma_update_vsi_filter);
211 * ice_get_qos_params - parse QoS params for RDMA consumption
212 * @pf: pointer to PF struct
213 * @qos: set of QoS values
215 void ice_get_qos_params(struct ice_pf *pf, struct iidc_qos_params *qos)
217 struct ice_dcbx_cfg *dcbx_cfg;
221 dcbx_cfg = &pf->hw.port_info->qos_cfg.local_dcbx_cfg;
222 up2tc = rd32(&pf->hw, PRTDCB_TUP2TC);
224 qos->num_tc = ice_dcb_get_num_tc(dcbx_cfg);
225 for (i = 0; i < IIDC_MAX_USER_PRIORITY; i++)
226 qos->up2tc[i] = (up2tc >> (i * 3)) & 0x7;
228 for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++)
229 qos->tc_info[i].rel_bw = dcbx_cfg->etscfg.tcbwtable[i];
231 EXPORT_SYMBOL_GPL(ice_get_qos_params);
234 * ice_reserve_rdma_qvector - Reserve vector resources for RDMA driver
235 * @pf: board private structure to initialize
237 static int ice_reserve_rdma_qvector(struct ice_pf *pf)
239 if (test_bit(ICE_FLAG_RDMA_ENA, pf->flags)) {
242 index = ice_get_res(pf, pf->irq_tracker, pf->num_rdma_msix,
243 ICE_RES_RDMA_VEC_ID);
246 pf->num_avail_sw_msix -= pf->num_rdma_msix;
247 pf->rdma_base_vector = (u16)index;
253 * ice_adev_release - function to be mapped to AUX dev's release op
254 * @dev: pointer to device to free
256 static void ice_adev_release(struct device *dev)
258 struct iidc_auxiliary_dev *iadev;
260 iadev = container_of(dev, struct iidc_auxiliary_dev, adev.dev);
265 * ice_plug_aux_dev - allocate and register AUX device
266 * @pf: pointer to pf struct
268 int ice_plug_aux_dev(struct ice_pf *pf)
270 struct iidc_auxiliary_dev *iadev;
271 struct auxiliary_device *adev;
274 /* if this PF doesn't support a technology that requires auxiliary
275 * devices, then gracefully exit
277 if (!ice_is_aux_ena(pf))
280 iadev = kzalloc(sizeof(*iadev), GFP_KERNEL);
288 adev->id = pf->aux_idx;
289 adev->dev.release = ice_adev_release;
290 adev->dev.parent = &pf->pdev->dev;
291 adev->name = IIDC_RDMA_ROCE_NAME;
293 ret = auxiliary_device_init(adev);
300 ret = auxiliary_device_add(adev);
303 auxiliary_device_uninit(adev);
310 /* ice_unplug_aux_dev - unregister and free AUX device
311 * @pf: pointer to pf struct
313 void ice_unplug_aux_dev(struct ice_pf *pf)
318 auxiliary_device_delete(pf->adev);
319 auxiliary_device_uninit(pf->adev);
324 * ice_init_rdma - initializes PF for RDMA use
327 int ice_init_rdma(struct ice_pf *pf)
329 struct device *dev = &pf->pdev->dev;
332 /* Reserve vector resources */
333 ret = ice_reserve_rdma_qvector(pf);
335 dev_err(dev, "failed to reserve vectors for RDMA\n");
339 return ice_plug_aux_dev(pf);