1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright(c) 2001-2021 Intel Corporation
3 */
4
5 #include "ice_common.h"
6
7 /**
8 * ice_pkg_get_supported_vlan_mode - chk if DDP supports Double VLAN mode (DVM)
9 * @hw: pointer to the HW struct
10 * @dvm: output variable to determine if DDP supports DVM(true) or SVM(false)
11 */
12 static enum ice_status
ice_pkg_get_supported_vlan_mode(struct ice_hw * hw,bool * dvm)13 ice_pkg_get_supported_vlan_mode(struct ice_hw *hw, bool *dvm)
14 {
15 u16 meta_init_size = sizeof(struct ice_meta_init_section);
16 struct ice_meta_init_section *sect;
17 struct ice_buf_build *bld;
18 enum ice_status status;
19
20 /* if anything fails, we assume there is no DVM support */
21 *dvm = false;
22
23 bld = ice_pkg_buf_alloc_single_section(hw,
24 ICE_SID_RXPARSER_METADATA_INIT,
25 meta_init_size, (void **)§);
26 if (!bld)
27 return ICE_ERR_NO_MEMORY;
28
29 /* only need to read a single section */
30 sect->count = CPU_TO_LE16(1);
31 sect->offset = CPU_TO_LE16(ICE_META_VLAN_MODE_ENTRY);
32
33 status = ice_aq_upload_section(hw,
34 (struct ice_buf_hdr *)ice_pkg_buf(bld),
35 ICE_PKG_BUF_SIZE, NULL);
36 if (!status) {
37 ice_declare_bitmap(entry, ICE_META_INIT_BITS);
38 u32 arr[ICE_META_INIT_DW_CNT];
39 u16 i;
40
41 /* convert to host bitmap format */
42 for (i = 0; i < ICE_META_INIT_DW_CNT; i++)
43 arr[i] = LE32_TO_CPU(sect->entry[0].bm[i]);
44
45 ice_bitmap_from_array32(entry, arr, (u16)ICE_META_INIT_BITS);
46
47 /* check if DVM is supported */
48 *dvm = ice_is_bit_set(entry, ICE_META_VLAN_MODE_BIT);
49 }
50
51 ice_pkg_buf_free(hw, bld);
52
53 return status;
54 }
55
56 /**
57 * ice_aq_get_vlan_mode - get the VLAN mode of the device
58 * @hw: pointer to the HW structure
59 * @get_params: structure FW fills in based on the current VLAN mode config
60 *
61 * Get VLAN Mode Parameters (0x020D)
62 */
63 static enum ice_status
ice_aq_get_vlan_mode(struct ice_hw * hw,struct ice_aqc_get_vlan_mode * get_params)64 ice_aq_get_vlan_mode(struct ice_hw *hw,
65 struct ice_aqc_get_vlan_mode *get_params)
66 {
67 struct ice_aq_desc desc;
68
69 if (!get_params)
70 return ICE_ERR_PARAM;
71
72 ice_fill_dflt_direct_cmd_desc(&desc,
73 ice_aqc_opc_get_vlan_mode_parameters);
74
75 return ice_aq_send_cmd(hw, &desc, get_params, sizeof(*get_params),
76 NULL);
77 }
78
79 /**
80 * ice_aq_is_dvm_ena - query FW to check if double VLAN mode is enabled
81 * @hw: pointer to the HW structure
82 *
83 * Returns true if the hardware/firmware is configured in double VLAN mode,
84 * else return false signaling that the hardware/firmware is configured in
85 * single VLAN mode.
86 *
87 * Also, return false if this call fails for any reason (i.e. firmware doesn't
88 * support this AQ call).
89 */
ice_aq_is_dvm_ena(struct ice_hw * hw)90 static bool ice_aq_is_dvm_ena(struct ice_hw *hw)
91 {
92 struct ice_aqc_get_vlan_mode get_params = { 0 };
93 enum ice_status status;
94
95 status = ice_aq_get_vlan_mode(hw, &get_params);
96 if (status) {
97 ice_debug(hw, ICE_DBG_AQ, "Failed to get VLAN mode, status %d\n",
98 status);
99 return false;
100 }
101
102 return (get_params.vlan_mode & ICE_AQ_VLAN_MODE_DVM_ENA);
103 }
104
105 /**
106 * ice_is_dvm_ena - check if double VLAN mode is enabled
107 * @hw: pointer to the HW structure
108 *
109 * The device is configured in single or double VLAN mode on initialization and
110 * this cannot be dynamically changed during runtime. Based on this there is no
111 * need to make an AQ call every time the driver needs to know the VLAN mode.
112 * Instead, use the cached VLAN mode.
113 */
ice_is_dvm_ena(struct ice_hw * hw)114 bool ice_is_dvm_ena(struct ice_hw *hw)
115 {
116 return hw->dvm_ena;
117 }
118
119 /**
120 * ice_cache_vlan_mode - cache VLAN mode after DDP is downloaded
121 * @hw: pointer to the HW structure
122 *
123 * This is only called after downloading the DDP and after the global
124 * configuration lock has been released because all ports on a device need to
125 * cache the VLAN mode.
126 */
ice_cache_vlan_mode(struct ice_hw * hw)127 static void ice_cache_vlan_mode(struct ice_hw *hw)
128 {
129 hw->dvm_ena = ice_aq_is_dvm_ena(hw) ? true : false;
130 }
131
132 /**
133 * ice_pkg_supports_dvm - find out if DDP supports DVM
134 * @hw: pointer to the HW structure
135 */
ice_pkg_supports_dvm(struct ice_hw * hw)136 static bool ice_pkg_supports_dvm(struct ice_hw *hw)
137 {
138 enum ice_status status;
139 bool pkg_supports_dvm;
140
141 status = ice_pkg_get_supported_vlan_mode(hw, &pkg_supports_dvm);
142 if (status) {
143 ice_debug(hw, ICE_DBG_PKG, "Failed to get supported VLAN mode, status %d\n",
144 status);
145 return false;
146 }
147
148 return pkg_supports_dvm;
149 }
150
151 /**
152 * ice_fw_supports_dvm - find out if FW supports DVM
153 * @hw: pointer to the HW structure
154 */
ice_fw_supports_dvm(struct ice_hw * hw)155 static bool ice_fw_supports_dvm(struct ice_hw *hw)
156 {
157 struct ice_aqc_get_vlan_mode get_vlan_mode = { 0 };
158 enum ice_status status;
159
160 /* If firmware returns success, then it supports DVM, else it only
161 * supports SVM
162 */
163 status = ice_aq_get_vlan_mode(hw, &get_vlan_mode);
164 if (status) {
165 ice_debug(hw, ICE_DBG_NVM, "Failed to get VLAN mode, status %d\n",
166 status);
167 return false;
168 }
169
170 return true;
171 }
172
173 /**
174 * ice_is_dvm_supported - check if Double VLAN Mode is supported
175 * @hw: pointer to the hardware structure
176 *
177 * Returns true if Double VLAN Mode (DVM) is supported and false if only Single
178 * VLAN Mode (SVM) is supported. In order for DVM to be supported the DDP and
179 * firmware must support it, otherwise only SVM is supported. This function
180 * should only be called while the global config lock is held and after the
181 * package has been successfully downloaded.
182 */
ice_is_dvm_supported(struct ice_hw * hw)183 static bool ice_is_dvm_supported(struct ice_hw *hw)
184 {
185 if (!ice_pkg_supports_dvm(hw)) {
186 ice_debug(hw, ICE_DBG_PKG, "DDP doesn't support DVM\n");
187 return false;
188 }
189
190 if (!ice_fw_supports_dvm(hw)) {
191 ice_debug(hw, ICE_DBG_PKG, "FW doesn't support DVM\n");
192 return false;
193 }
194
195 return true;
196 }
197
198 #define ICE_EXTERNAL_VLAN_ID_FV_IDX 11
199 #define ICE_SW_LKUP_VLAN_LOC_LKUP_IDX 1
200 #define ICE_SW_LKUP_VLAN_PKT_FLAGS_LKUP_IDX 2
201 #define ICE_SW_LKUP_PROMISC_VLAN_LOC_LKUP_IDX 2
202 #define ICE_PKT_FLAGS_0_TO_15_FV_IDX 1
203 #define ICE_PKT_FLAGS_0_TO_15_VLAN_FLAGS_MASK 0xD000
204 static struct ice_update_recipe_lkup_idx_params ice_dvm_dflt_recipes[] = {
205 {
206 /* Update recipe ICE_SW_LKUP_VLAN to filter based on the
207 * outer/single VLAN in DVM
208 */
209 .rid = ICE_SW_LKUP_VLAN,
210 .fv_idx = ICE_EXTERNAL_VLAN_ID_FV_IDX,
211 .ignore_valid = true,
212 .mask = 0,
213 .mask_valid = false, /* use pre-existing mask */
214 .lkup_idx = ICE_SW_LKUP_VLAN_LOC_LKUP_IDX,
215 },
216 {
217 /* Update recipe ICE_SW_LKUP_VLAN to filter based on the VLAN
218 * packet flags to support VLAN filtering on multiple VLAN
219 * ethertypes (i.e. 0x8100 and 0x88a8) in DVM
220 */
221 .rid = ICE_SW_LKUP_VLAN,
222 .fv_idx = ICE_PKT_FLAGS_0_TO_15_FV_IDX,
223 .ignore_valid = false,
224 .mask = ICE_PKT_FLAGS_0_TO_15_VLAN_FLAGS_MASK,
225 .mask_valid = true,
226 .lkup_idx = ICE_SW_LKUP_VLAN_PKT_FLAGS_LKUP_IDX,
227 },
228 {
229 /* Update recipe ICE_SW_LKUP_PROMISC_VLAN to filter based on the
230 * outer/single VLAN in DVM
231 */
232 .rid = ICE_SW_LKUP_PROMISC_VLAN,
233 .fv_idx = ICE_EXTERNAL_VLAN_ID_FV_IDX,
234 .ignore_valid = true,
235 .mask = 0,
236 .mask_valid = false, /* use pre-existing mask */
237 .lkup_idx = ICE_SW_LKUP_PROMISC_VLAN_LOC_LKUP_IDX,
238 },
239 };
240
241 /**
242 * ice_dvm_update_dflt_recipes - update default switch recipes in DVM
243 * @hw: hardware structure used to update the recipes
244 */
ice_dvm_update_dflt_recipes(struct ice_hw * hw)245 static enum ice_status ice_dvm_update_dflt_recipes(struct ice_hw *hw)
246 {
247 unsigned long i;
248
249 for (i = 0; i < ARRAY_SIZE(ice_dvm_dflt_recipes); i++) {
250 struct ice_update_recipe_lkup_idx_params *params;
251 enum ice_status status;
252
253 params = &ice_dvm_dflt_recipes[i];
254
255 status = ice_update_recipe_lkup_idx(hw, params);
256 if (status) {
257 ice_debug(hw, ICE_DBG_INIT, "Failed to update RID %d lkup_idx %d fv_idx %d mask_valid %s mask 0x%04x\n",
258 params->rid, params->lkup_idx, params->fv_idx,
259 params->mask_valid ? "true" : "false",
260 params->mask);
261 return status;
262 }
263 }
264
265 return ICE_SUCCESS;
266 }
267
268 /**
269 * ice_aq_set_vlan_mode - set the VLAN mode of the device
270 * @hw: pointer to the HW structure
271 * @set_params: requested VLAN mode configuration
272 *
273 * Set VLAN Mode Parameters (0x020C)
274 */
275 static enum ice_status
ice_aq_set_vlan_mode(struct ice_hw * hw,struct ice_aqc_set_vlan_mode * set_params)276 ice_aq_set_vlan_mode(struct ice_hw *hw,
277 struct ice_aqc_set_vlan_mode *set_params)
278 {
279 u8 rdma_packet, mng_vlan_prot_id;
280 struct ice_aq_desc desc;
281
282 if (!set_params)
283 return ICE_ERR_PARAM;
284
285 if (set_params->l2tag_prio_tagging > ICE_AQ_VLAN_PRIO_TAG_MAX)
286 return ICE_ERR_PARAM;
287
288 rdma_packet = set_params->rdma_packet;
289 if (rdma_packet != ICE_AQ_SVM_VLAN_RDMA_PKT_FLAG_SETTING &&
290 rdma_packet != ICE_AQ_DVM_VLAN_RDMA_PKT_FLAG_SETTING)
291 return ICE_ERR_PARAM;
292
293 mng_vlan_prot_id = set_params->mng_vlan_prot_id;
294 if (mng_vlan_prot_id != ICE_AQ_VLAN_MNG_PROTOCOL_ID_OUTER &&
295 mng_vlan_prot_id != ICE_AQ_VLAN_MNG_PROTOCOL_ID_INNER)
296 return ICE_ERR_PARAM;
297
298 ice_fill_dflt_direct_cmd_desc(&desc,
299 ice_aqc_opc_set_vlan_mode_parameters);
300 desc.flags |= CPU_TO_LE16(ICE_AQ_FLAG_RD);
301
302 return ice_aq_send_cmd(hw, &desc, set_params, sizeof(*set_params),
303 NULL);
304 }
305
306 /**
307 * ice_set_dvm - sets up software and hardware for double VLAN mode
308 * @hw: pointer to the hardware structure
309 */
ice_set_dvm(struct ice_hw * hw)310 static enum ice_status ice_set_dvm(struct ice_hw *hw)
311 {
312 struct ice_aqc_set_vlan_mode params = { 0 };
313 enum ice_status status;
314
315 params.l2tag_prio_tagging = ICE_AQ_VLAN_PRIO_TAG_OUTER_CTAG;
316 params.rdma_packet = ICE_AQ_DVM_VLAN_RDMA_PKT_FLAG_SETTING;
317 params.mng_vlan_prot_id = ICE_AQ_VLAN_MNG_PROTOCOL_ID_OUTER;
318
319 status = ice_aq_set_vlan_mode(hw, ¶ms);
320 if (status) {
321 ice_debug(hw, ICE_DBG_INIT, "Failed to set double VLAN mode parameters, status %d\n",
322 status);
323 return status;
324 }
325
326 status = ice_dvm_update_dflt_recipes(hw);
327 if (status) {
328 ice_debug(hw, ICE_DBG_INIT, "Failed to update default recipes for double VLAN mode, status %d\n",
329 status);
330 return status;
331 }
332
333 status = ice_aq_set_port_params(hw->port_info, 0, false, false, true,
334 NULL);
335 if (status) {
336 ice_debug(hw, ICE_DBG_INIT, "Failed to set port in double VLAN mode, status %d\n",
337 status);
338 return status;
339 }
340
341 status = ice_set_dvm_boost_entries(hw);
342 if (status) {
343 ice_debug(hw, ICE_DBG_INIT, "Failed to set boost TCAM entries for double VLAN mode, status %d\n",
344 status);
345 return status;
346 }
347
348 return ICE_SUCCESS;
349 }
350
351 /**
352 * ice_set_svm - set single VLAN mode
353 * @hw: pointer to the HW structure
354 */
ice_set_svm(struct ice_hw * hw)355 static enum ice_status ice_set_svm(struct ice_hw *hw)
356 {
357 struct ice_aqc_set_vlan_mode *set_params;
358 enum ice_status status;
359
360 status = ice_aq_set_port_params(hw->port_info, 0, false, false, false, NULL);
361 if (status) {
362 ice_debug(hw, ICE_DBG_INIT, "Failed to set port parameters for single VLAN mode\n");
363 return status;
364 }
365
366 set_params = (struct ice_aqc_set_vlan_mode *)
367 ice_malloc(hw, sizeof(*set_params));
368 if (!set_params)
369 return ICE_ERR_NO_MEMORY;
370
371 /* default configuration for SVM configurations */
372 set_params->l2tag_prio_tagging = ICE_AQ_VLAN_PRIO_TAG_INNER_CTAG;
373 set_params->rdma_packet = ICE_AQ_SVM_VLAN_RDMA_PKT_FLAG_SETTING;
374 set_params->mng_vlan_prot_id = ICE_AQ_VLAN_MNG_PROTOCOL_ID_INNER;
375
376 status = ice_aq_set_vlan_mode(hw, set_params);
377 if (status)
378 ice_debug(hw, ICE_DBG_INIT, "Failed to configure port in single VLAN mode\n");
379
380 ice_free(hw, set_params);
381 return status;
382 }
383
384 /**
385 * ice_set_vlan_mode
386 * @hw: pointer to the HW structure
387 */
ice_set_vlan_mode(struct ice_hw * hw)388 enum ice_status ice_set_vlan_mode(struct ice_hw *hw)
389 {
390 /* DCF only has the ability to query the VLAN mode. Setting the VLAN
391 * mode is done by the PF.
392 */
393 if (hw->dcf_enabled)
394 return ICE_SUCCESS;
395
396 if (!ice_is_dvm_supported(hw))
397 return ICE_SUCCESS;
398
399 if (!ice_set_dvm(hw))
400 return ICE_SUCCESS;
401
402 return ice_set_svm(hw);
403 }
404
405 /**
406 * ice_print_dvm_not_supported - print if DDP and/or FW doesn't support DVM
407 * @hw: pointer to the HW structure
408 *
409 * The purpose of this function is to print that QinQ is not supported due to
410 * incompatibilty from the DDP and/or FW. This will give a hint to the user to
411 * update one and/or both components if they expect QinQ functionality.
412 */
ice_print_dvm_not_supported(struct ice_hw * hw)413 static void ice_print_dvm_not_supported(struct ice_hw *hw)
414 {
415 bool pkg_supports_dvm = ice_pkg_supports_dvm(hw);
416 bool fw_supports_dvm = ice_fw_supports_dvm(hw);
417
418 if (!fw_supports_dvm && !pkg_supports_dvm)
419 ice_info(hw, "QinQ functionality cannot be enabled on this device. "
420 "Update your DDP package and NVM to versions that support QinQ.\n");
421 else if (!pkg_supports_dvm)
422 ice_info(hw, "QinQ functionality cannot be enabled on this device. "
423 "Update your DDP package to a version that supports QinQ.\n");
424 else if (!fw_supports_dvm)
425 ice_info(hw, "QinQ functionality cannot be enabled on this device. "
426 "Update your NVM to a version that supports QinQ.\n");
427 }
428
429 /**
430 * ice_post_pkg_dwnld_vlan_mode_cfg - configure VLAN mode after DDP download
431 * @hw: pointer to the HW structure
432 *
433 * This function is meant to configure any VLAN mode specific functionality
434 * after the global configuration lock has been released and the DDP has been
435 * downloaded.
436 *
437 * Since only one PF downloads the DDP and configures the VLAN mode there needs
438 * to be a way to configure the other PFs after the DDP has been downloaded and
439 * the global configuration lock has been released. All such code should go in
440 * this function.
441 */
ice_post_pkg_dwnld_vlan_mode_cfg(struct ice_hw * hw)442 void ice_post_pkg_dwnld_vlan_mode_cfg(struct ice_hw *hw)
443 {
444 ice_cache_vlan_mode(hw);
445
446 if (ice_is_dvm_ena(hw))
447 ice_change_proto_id_to_dvm();
448 else
449 ice_print_dvm_not_supported(hw);
450 }
451