1 // SPDX-License-Identifier: GPL-2.0
2 #include <linux/delay.h>
4 #include "nitrox_dev.h"
5 #include "nitrox_csr.h"
8 #define MAX_CSR_RETRIES 10
11 * emu_enable_cores - Enable EMU cluster cores.
12 * @ndev: NITROX device
14 static void emu_enable_cores(struct nitrox_device *ndev)
16 union emu_se_enable emu_se;
17 union emu_ae_enable emu_ae;
20 /* AE cores 20 per cluster */
22 emu_ae.s.enable = 0xfffff;
24 /* SE cores 16 per cluster */
26 emu_se.s.enable = 0xffff;
28 /* enable per cluster cores */
29 for (i = 0; i < NR_CLUSTERS; i++) {
30 nitrox_write_csr(ndev, EMU_AE_ENABLEX(i), emu_ae.value);
31 nitrox_write_csr(ndev, EMU_SE_ENABLEX(i), emu_se.value);
36 * nitrox_config_emu_unit - configure EMU unit.
37 * @ndev: NITROX device
39 void nitrox_config_emu_unit(struct nitrox_device *ndev)
41 union emu_wd_int_ena_w1s emu_wd_int;
42 union emu_ge_int_ena_w1s emu_ge_int;
47 emu_enable_cores(ndev);
49 /* enable general error and watch dog interrupts */
51 emu_ge_int.s.se_ge = 0xffff;
52 emu_ge_int.s.ae_ge = 0xfffff;
54 emu_wd_int.s.se_wd = 1;
56 for (i = 0; i < NR_CLUSTERS; i++) {
57 offset = EMU_WD_INT_ENA_W1SX(i);
58 nitrox_write_csr(ndev, offset, emu_wd_int.value);
59 offset = EMU_GE_INT_ENA_W1SX(i);
60 nitrox_write_csr(ndev, offset, emu_ge_int.value);
64 static void reset_pkt_input_ring(struct nitrox_device *ndev, int ring)
66 union nps_pkt_in_instr_ctl pkt_in_ctl;
67 union nps_pkt_in_done_cnts pkt_in_cnts;
68 int max_retries = MAX_CSR_RETRIES;
71 /* step 1: disable the ring, clear enable bit */
72 offset = NPS_PKT_IN_INSTR_CTLX(ring);
73 pkt_in_ctl.value = nitrox_read_csr(ndev, offset);
75 nitrox_write_csr(ndev, offset, pkt_in_ctl.value);
77 /* step 2: wait to clear [ENB] */
78 usleep_range(100, 150);
80 pkt_in_ctl.value = nitrox_read_csr(ndev, offset);
81 if (!pkt_in_ctl.s.enb)
84 } while (max_retries--);
86 /* step 3: clear done counts */
87 offset = NPS_PKT_IN_DONE_CNTSX(ring);
88 pkt_in_cnts.value = nitrox_read_csr(ndev, offset);
89 nitrox_write_csr(ndev, offset, pkt_in_cnts.value);
90 usleep_range(50, 100);
93 void enable_pkt_input_ring(struct nitrox_device *ndev, int ring)
95 union nps_pkt_in_instr_ctl pkt_in_ctl;
96 int max_retries = MAX_CSR_RETRIES;
99 /* 64-byte instruction size */
100 offset = NPS_PKT_IN_INSTR_CTLX(ring);
101 pkt_in_ctl.value = nitrox_read_csr(ndev, offset);
102 pkt_in_ctl.s.is64b = 1;
103 pkt_in_ctl.s.enb = 1;
104 nitrox_write_csr(ndev, offset, pkt_in_ctl.value);
106 /* wait for set [ENB] */
108 pkt_in_ctl.value = nitrox_read_csr(ndev, offset);
109 if (pkt_in_ctl.s.enb)
112 } while (max_retries--);
116 * nitrox_config_pkt_input_rings - configure Packet Input Rings
117 * @ndev: NITROX device
119 void nitrox_config_pkt_input_rings(struct nitrox_device *ndev)
123 for (i = 0; i < ndev->nr_queues; i++) {
124 struct nitrox_cmdq *cmdq = &ndev->pkt_inq[i];
125 union nps_pkt_in_instr_rsize pkt_in_rsize;
126 union nps_pkt_in_instr_baoff_dbell pkt_in_dbell;
129 reset_pkt_input_ring(ndev, i);
133 * configure ring base address 16-byte aligned,
134 * size and interrupt threshold.
136 offset = NPS_PKT_IN_INSTR_BADDRX(i);
137 nitrox_write_csr(ndev, offset, cmdq->dma);
139 /* configure ring size */
140 offset = NPS_PKT_IN_INSTR_RSIZEX(i);
141 pkt_in_rsize.value = 0;
142 pkt_in_rsize.s.rsize = ndev->qlen;
143 nitrox_write_csr(ndev, offset, pkt_in_rsize.value);
145 /* set high threshold for pkt input ring interrupts */
146 offset = NPS_PKT_IN_INT_LEVELSX(i);
147 nitrox_write_csr(ndev, offset, 0xffffffff);
149 /* step 5: clear off door bell counts */
150 offset = NPS_PKT_IN_INSTR_BAOFF_DBELLX(i);
151 pkt_in_dbell.value = 0;
152 pkt_in_dbell.s.dbell = 0xffffffff;
153 nitrox_write_csr(ndev, offset, pkt_in_dbell.value);
155 /* enable the ring */
156 enable_pkt_input_ring(ndev, i);
160 static void reset_pkt_solicit_port(struct nitrox_device *ndev, int port)
162 union nps_pkt_slc_ctl pkt_slc_ctl;
163 union nps_pkt_slc_cnts pkt_slc_cnts;
164 int max_retries = MAX_CSR_RETRIES;
167 /* step 1: disable slc port */
168 offset = NPS_PKT_SLC_CTLX(port);
169 pkt_slc_ctl.value = nitrox_read_csr(ndev, offset);
170 pkt_slc_ctl.s.enb = 0;
171 nitrox_write_csr(ndev, offset, pkt_slc_ctl.value);
174 usleep_range(100, 150);
175 /* wait to clear [ENB] */
177 pkt_slc_ctl.value = nitrox_read_csr(ndev, offset);
178 if (!pkt_slc_ctl.s.enb)
181 } while (max_retries--);
183 /* step 3: clear slc counters */
184 offset = NPS_PKT_SLC_CNTSX(port);
185 pkt_slc_cnts.value = nitrox_read_csr(ndev, offset);
186 nitrox_write_csr(ndev, offset, pkt_slc_cnts.value);
187 usleep_range(50, 100);
190 void enable_pkt_solicit_port(struct nitrox_device *ndev, int port)
192 union nps_pkt_slc_ctl pkt_slc_ctl;
193 int max_retries = MAX_CSR_RETRIES;
196 offset = NPS_PKT_SLC_CTLX(port);
197 pkt_slc_ctl.value = 0;
198 pkt_slc_ctl.s.enb = 1;
200 * 8 trailing 0x00 bytes will be added
201 * to the end of the outgoing packet.
204 /* enable response header */
205 pkt_slc_ctl.s.rh = 1;
206 nitrox_write_csr(ndev, offset, pkt_slc_ctl.value);
208 /* wait to set [ENB] */
210 pkt_slc_ctl.value = nitrox_read_csr(ndev, offset);
211 if (pkt_slc_ctl.s.enb)
214 } while (max_retries--);
217 static void config_pkt_solicit_port(struct nitrox_device *ndev, int port)
219 union nps_pkt_slc_int_levels pkt_slc_int;
222 reset_pkt_solicit_port(ndev, port);
224 /* step 4: configure interrupt levels */
225 offset = NPS_PKT_SLC_INT_LEVELSX(port);
226 pkt_slc_int.value = 0;
227 /* time interrupt threshold */
228 pkt_slc_int.s.timet = 0x3fffff;
229 nitrox_write_csr(ndev, offset, pkt_slc_int.value);
231 /* enable the solicit port */
232 enable_pkt_solicit_port(ndev, port);
235 void nitrox_config_pkt_solicit_ports(struct nitrox_device *ndev)
239 for (i = 0; i < ndev->nr_queues; i++)
240 config_pkt_solicit_port(ndev, i);
244 * enable_nps_interrupts - enable NPS interrutps
245 * @ndev: NITROX device.
247 * This includes NPS core, packet in and slc interrupts.
249 static void enable_nps_interrupts(struct nitrox_device *ndev)
251 union nps_core_int_ena_w1s core_int;
253 /* NPS core interrutps */
255 core_int.s.host_wr_err = 1;
256 core_int.s.host_wr_timeout = 1;
257 core_int.s.exec_wr_timeout = 1;
258 core_int.s.npco_dma_malform = 1;
259 core_int.s.host_nps_wr_err = 1;
260 nitrox_write_csr(ndev, NPS_CORE_INT_ENA_W1S, core_int.value);
262 /* NPS packet in ring interrupts */
263 nitrox_write_csr(ndev, NPS_PKT_IN_RERR_LO_ENA_W1S, (~0ULL));
264 nitrox_write_csr(ndev, NPS_PKT_IN_RERR_HI_ENA_W1S, (~0ULL));
265 nitrox_write_csr(ndev, NPS_PKT_IN_ERR_TYPE_ENA_W1S, (~0ULL));
266 /* NPS packet slc port interrupts */
267 nitrox_write_csr(ndev, NPS_PKT_SLC_RERR_HI_ENA_W1S, (~0ULL));
268 nitrox_write_csr(ndev, NPS_PKT_SLC_RERR_LO_ENA_W1S, (~0ULL));
269 nitrox_write_csr(ndev, NPS_PKT_SLC_ERR_TYPE_ENA_W1S, (~0uLL));
272 void nitrox_config_nps_unit(struct nitrox_device *ndev)
274 union nps_core_gbl_vfcfg core_gbl_vfcfg;
276 /* endian control information */
277 nitrox_write_csr(ndev, NPS_CORE_CONTROL, 1ULL);
279 /* disable ILK interface */
280 core_gbl_vfcfg.value = 0;
281 core_gbl_vfcfg.s.ilk_disable = 1;
282 core_gbl_vfcfg.s.cfg = __NDEV_MODE_PF;
283 nitrox_write_csr(ndev, NPS_CORE_GBL_VFCFG, core_gbl_vfcfg.value);
284 /* config input and solicit ports */
285 nitrox_config_pkt_input_rings(ndev);
286 nitrox_config_pkt_solicit_ports(ndev);
288 /* enable interrupts */
289 enable_nps_interrupts(ndev);
292 void nitrox_config_pom_unit(struct nitrox_device *ndev)
294 union pom_int_ena_w1s pom_int;
297 /* enable pom interrupts */
299 pom_int.s.illegal_dport = 1;
300 nitrox_write_csr(ndev, POM_INT_ENA_W1S, pom_int.value);
302 /* enable perf counters */
303 for (i = 0; i < ndev->hw.se_cores; i++)
304 nitrox_write_csr(ndev, POM_PERF_CTL, BIT_ULL(i));
308 * nitrox_config_rand_unit - enable NITROX random number unit
309 * @ndev: NITROX device
311 void nitrox_config_rand_unit(struct nitrox_device *ndev)
313 union efl_rnm_ctl_status efl_rnm_ctl;
316 offset = EFL_RNM_CTL_STATUS;
317 efl_rnm_ctl.value = nitrox_read_csr(ndev, offset);
318 efl_rnm_ctl.s.ent_en = 1;
319 efl_rnm_ctl.s.rng_en = 1;
320 nitrox_write_csr(ndev, offset, efl_rnm_ctl.value);
323 void nitrox_config_efl_unit(struct nitrox_device *ndev)
327 for (i = 0; i < NR_CLUSTERS; i++) {
328 union efl_core_int_ena_w1s efl_core_int;
331 /* EFL core interrupts */
332 offset = EFL_CORE_INT_ENA_W1SX(i);
333 efl_core_int.value = 0;
334 efl_core_int.s.len_ovr = 1;
335 efl_core_int.s.d_left = 1;
336 efl_core_int.s.epci_decode_err = 1;
337 nitrox_write_csr(ndev, offset, efl_core_int.value);
339 offset = EFL_CORE_VF_ERR_INT0_ENA_W1SX(i);
340 nitrox_write_csr(ndev, offset, (~0ULL));
341 offset = EFL_CORE_VF_ERR_INT1_ENA_W1SX(i);
342 nitrox_write_csr(ndev, offset, (~0ULL));
346 void nitrox_config_bmi_unit(struct nitrox_device *ndev)
348 union bmi_ctl bmi_ctl;
349 union bmi_int_ena_w1s bmi_int_ena;
352 /* no threshold limits for PCIe */
354 bmi_ctl.value = nitrox_read_csr(ndev, offset);
355 bmi_ctl.s.max_pkt_len = 0xff;
356 bmi_ctl.s.nps_free_thrsh = 0xff;
357 bmi_ctl.s.nps_hdrq_thrsh = 0x7a;
358 nitrox_write_csr(ndev, offset, bmi_ctl.value);
360 /* enable interrupts */
361 offset = BMI_INT_ENA_W1S;
362 bmi_int_ena.value = 0;
363 bmi_int_ena.s.max_len_err_nps = 1;
364 bmi_int_ena.s.pkt_rcv_err_nps = 1;
365 bmi_int_ena.s.fpf_undrrn = 1;
366 nitrox_write_csr(ndev, offset, bmi_int_ena.value);
369 void nitrox_config_bmo_unit(struct nitrox_device *ndev)
371 union bmo_ctl2 bmo_ctl2;
374 /* no threshold limits for PCIe */
376 bmo_ctl2.value = nitrox_read_csr(ndev, offset);
377 bmo_ctl2.s.nps_slc_buf_thrsh = 0xff;
378 nitrox_write_csr(ndev, offset, bmo_ctl2.value);
381 void invalidate_lbc(struct nitrox_device *ndev)
383 union lbc_inval_ctl lbc_ctl;
384 union lbc_inval_status lbc_stat;
385 int max_retries = MAX_CSR_RETRIES;
389 offset = LBC_INVAL_CTL;
390 lbc_ctl.value = nitrox_read_csr(ndev, offset);
391 lbc_ctl.s.cam_inval_start = 1;
392 nitrox_write_csr(ndev, offset, lbc_ctl.value);
394 offset = LBC_INVAL_STATUS;
396 lbc_stat.value = nitrox_read_csr(ndev, offset);
400 } while (max_retries--);
403 void nitrox_config_lbc_unit(struct nitrox_device *ndev)
405 union lbc_int_ena_w1s lbc_int_ena;
408 invalidate_lbc(ndev);
410 /* enable interrupts */
411 offset = LBC_INT_ENA_W1S;
412 lbc_int_ena.value = 0;
413 lbc_int_ena.s.dma_rd_err = 1;
414 lbc_int_ena.s.over_fetch_err = 1;
415 lbc_int_ena.s.cam_inval_abort = 1;
416 lbc_int_ena.s.cam_hard_err = 1;
417 nitrox_write_csr(ndev, offset, lbc_int_ena.value);
419 offset = LBC_PLM_VF1_64_INT_ENA_W1S;
420 nitrox_write_csr(ndev, offset, (~0ULL));
421 offset = LBC_PLM_VF65_128_INT_ENA_W1S;
422 nitrox_write_csr(ndev, offset, (~0ULL));
424 offset = LBC_ELM_VF1_64_INT_ENA_W1S;
425 nitrox_write_csr(ndev, offset, (~0ULL));
426 offset = LBC_ELM_VF65_128_INT_ENA_W1S;
427 nitrox_write_csr(ndev, offset, (~0ULL));
430 void config_nps_core_vfcfg_mode(struct nitrox_device *ndev, enum vf_mode mode)
432 union nps_core_gbl_vfcfg vfcfg;
434 vfcfg.value = nitrox_read_csr(ndev, NPS_CORE_GBL_VFCFG);
435 vfcfg.s.cfg = mode & 0x7;
437 nitrox_write_csr(ndev, NPS_CORE_GBL_VFCFG, vfcfg.value);
440 static const char *get_core_option(u8 se_cores, u8 ae_cores)
442 const char *option = "";
444 if (ae_cores == AE_MAX_CORES) {
453 } else if (ae_cores == (AE_MAX_CORES / 2)) {
462 static const char *get_feature_option(u8 zip_cores, int core_freq)
466 else if (zip_cores < ZIP_MAX_CORES)
469 if (core_freq >= 850)
471 else if (core_freq >= 750)
473 else if (core_freq >= 550)
479 void nitrox_get_hwinfo(struct nitrox_device *ndev)
481 union emu_fuse_map emu_fuse;
482 union rst_boot rst_boot;
483 union fus_dat1 fus_dat1;
484 unsigned char name[IFNAMSIZ * 2] = {};
488 /* get core frequency */
490 rst_boot.value = nitrox_read_csr(ndev, offset);
491 ndev->hw.freq = (rst_boot.pnr_mul + 3) * PLL_REF_CLK;
493 for (i = 0; i < NR_CLUSTERS; i++) {
494 offset = EMU_FUSE_MAPX(i);
495 emu_fuse.value = nitrox_read_csr(ndev, offset);
496 if (emu_fuse.s.valid) {
497 dead_cores = hweight32(emu_fuse.s.ae_fuse);
498 ndev->hw.ae_cores += AE_CORES_PER_CLUSTER - dead_cores;
499 dead_cores = hweight16(emu_fuse.s.se_fuse);
500 ndev->hw.se_cores += SE_CORES_PER_CLUSTER - dead_cores;
503 /* find zip hardware availability */
505 fus_dat1.value = nitrox_read_csr(ndev, offset);
506 if (!fus_dat1.nozip) {
507 dead_cores = hweight8(fus_dat1.zip_info);
508 ndev->hw.zip_cores = ZIP_MAX_CORES - dead_cores;
511 /* determine the partname
512 * CNN55<core option>-<freq><pincount>-<feature option>-<rev>
514 snprintf(name, sizeof(name), "CNN55%s-%3dBG676%s-1.%u",
515 get_core_option(ndev->hw.se_cores, ndev->hw.ae_cores),
517 get_feature_option(ndev->hw.zip_cores, ndev->hw.freq),
518 ndev->hw.revision_id);
521 strncpy(ndev->hw.partname, name, sizeof(ndev->hw.partname));
524 void enable_pf2vf_mbox_interrupts(struct nitrox_device *ndev)
529 /* Mailbox interrupt low enable set register */
530 reg_addr = NPS_PKT_MBOX_INT_LO_ENA_W1S;
531 nitrox_write_csr(ndev, reg_addr, value);
533 /* Mailbox interrupt high enable set register */
534 reg_addr = NPS_PKT_MBOX_INT_HI_ENA_W1S;
535 nitrox_write_csr(ndev, reg_addr, value);
538 void disable_pf2vf_mbox_interrupts(struct nitrox_device *ndev)
543 /* Mailbox interrupt low enable clear register */
544 reg_addr = NPS_PKT_MBOX_INT_LO_ENA_W1C;
545 nitrox_write_csr(ndev, reg_addr, value);
547 /* Mailbox interrupt high enable clear register */
548 reg_addr = NPS_PKT_MBOX_INT_HI_ENA_W1C;
549 nitrox_write_csr(ndev, reg_addr, value);