1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * Copyright (c) 2024 AIROHA Inc
4 * Author: Lorenzo Bianconi <lorenzo@kernel.org>
5 */
6 #include <linux/of.h>
7 #include <linux/of_net.h>
8 #include <linux/of_reserved_mem.h>
9 #include <linux/platform_device.h>
10 #include <linux/tcp.h>
11 #include <linux/u64_stats_sync.h>
12 #include <net/dst_metadata.h>
13 #include <net/page_pool/helpers.h>
14 #include <net/pkt_cls.h>
15 #include <uapi/linux/ppp_defs.h>
16
17 #include "airoha_regs.h"
18 #include "airoha_eth.h"
19
airoha_rr(void __iomem * base,u32 offset)20 u32 airoha_rr(void __iomem *base, u32 offset)
21 {
22 return readl(base + offset);
23 }
24
airoha_wr(void __iomem * base,u32 offset,u32 val)25 void airoha_wr(void __iomem *base, u32 offset, u32 val)
26 {
27 writel(val, base + offset);
28 }
29
airoha_rmw(void __iomem * base,u32 offset,u32 mask,u32 val)30 u32 airoha_rmw(void __iomem *base, u32 offset, u32 mask, u32 val)
31 {
32 val |= (airoha_rr(base, offset) & ~mask);
33 airoha_wr(base, offset, val);
34
35 return val;
36 }
37
airoha_qdma_set_irqmask(struct airoha_irq_bank * irq_bank,int index,u32 clear,u32 set)38 static void airoha_qdma_set_irqmask(struct airoha_irq_bank *irq_bank,
39 int index, u32 clear, u32 set)
40 {
41 struct airoha_qdma *qdma = irq_bank->qdma;
42 int bank = irq_bank - &qdma->irq_banks[0];
43 unsigned long flags;
44
45 if (WARN_ON_ONCE(index >= ARRAY_SIZE(irq_bank->irqmask)))
46 return;
47
48 spin_lock_irqsave(&irq_bank->irq_lock, flags);
49
50 irq_bank->irqmask[index] &= ~clear;
51 irq_bank->irqmask[index] |= set;
52 airoha_qdma_wr(qdma, REG_INT_ENABLE(bank, index),
53 irq_bank->irqmask[index]);
54 /* Read irq_enable register in order to guarantee the update above
55 * completes in the spinlock critical section.
56 */
57 airoha_qdma_rr(qdma, REG_INT_ENABLE(bank, index));
58
59 spin_unlock_irqrestore(&irq_bank->irq_lock, flags);
60 }
61
airoha_qdma_irq_enable(struct airoha_irq_bank * irq_bank,int index,u32 mask)62 static void airoha_qdma_irq_enable(struct airoha_irq_bank *irq_bank,
63 int index, u32 mask)
64 {
65 airoha_qdma_set_irqmask(irq_bank, index, 0, mask);
66 }
67
airoha_qdma_irq_disable(struct airoha_irq_bank * irq_bank,int index,u32 mask)68 static void airoha_qdma_irq_disable(struct airoha_irq_bank *irq_bank,
69 int index, u32 mask)
70 {
71 airoha_qdma_set_irqmask(irq_bank, index, mask, 0);
72 }
73
airoha_set_macaddr(struct airoha_gdm_port * port,const u8 * addr)74 static void airoha_set_macaddr(struct airoha_gdm_port *port, const u8 *addr)
75 {
76 struct airoha_eth *eth = port->qdma->eth;
77 u32 val, reg;
78
79 reg = airhoa_is_lan_gdm_port(port) ? REG_FE_LAN_MAC_H
80 : REG_FE_WAN_MAC_H;
81 val = (addr[0] << 16) | (addr[1] << 8) | addr[2];
82 airoha_fe_wr(eth, reg, val);
83
84 val = (addr[3] << 16) | (addr[4] << 8) | addr[5];
85 airoha_fe_wr(eth, REG_FE_MAC_LMIN(reg), val);
86 airoha_fe_wr(eth, REG_FE_MAC_LMAX(reg), val);
87
88 airoha_ppe_init_upd_mem(port);
89 }
90
airoha_set_gdm_port_fwd_cfg(struct airoha_eth * eth,u32 addr,u32 val)91 static void airoha_set_gdm_port_fwd_cfg(struct airoha_eth *eth, u32 addr,
92 u32 val)
93 {
94 airoha_fe_rmw(eth, addr, GDM_OCFQ_MASK,
95 FIELD_PREP(GDM_OCFQ_MASK, val));
96 airoha_fe_rmw(eth, addr, GDM_MCFQ_MASK,
97 FIELD_PREP(GDM_MCFQ_MASK, val));
98 airoha_fe_rmw(eth, addr, GDM_BCFQ_MASK,
99 FIELD_PREP(GDM_BCFQ_MASK, val));
100 airoha_fe_rmw(eth, addr, GDM_UCFQ_MASK,
101 FIELD_PREP(GDM_UCFQ_MASK, val));
102 }
103
airoha_set_vip_for_gdm_port(struct airoha_gdm_port * port,bool enable)104 static int airoha_set_vip_for_gdm_port(struct airoha_gdm_port *port,
105 bool enable)
106 {
107 struct airoha_eth *eth = port->qdma->eth;
108 u32 vip_port;
109
110 switch (port->id) {
111 case 3:
112 /* FIXME: handle XSI_PCIE1_PORT */
113 vip_port = XSI_PCIE0_VIP_PORT_MASK;
114 break;
115 case 4:
116 /* FIXME: handle XSI_USB_PORT */
117 vip_port = XSI_ETH_VIP_PORT_MASK;
118 break;
119 default:
120 return 0;
121 }
122
123 if (enable) {
124 airoha_fe_set(eth, REG_FE_VIP_PORT_EN, vip_port);
125 airoha_fe_set(eth, REG_FE_IFC_PORT_EN, vip_port);
126 } else {
127 airoha_fe_clear(eth, REG_FE_VIP_PORT_EN, vip_port);
128 airoha_fe_clear(eth, REG_FE_IFC_PORT_EN, vip_port);
129 }
130
131 return 0;
132 }
133
airoha_fe_maccr_init(struct airoha_eth * eth)134 static void airoha_fe_maccr_init(struct airoha_eth *eth)
135 {
136 int p;
137
138 for (p = 1; p <= ARRAY_SIZE(eth->ports); p++)
139 airoha_fe_set(eth, REG_GDM_FWD_CFG(p),
140 GDM_TCP_CKSUM_MASK | GDM_UDP_CKSUM_MASK |
141 GDM_IP4_CKSUM_MASK | GDM_DROP_CRC_ERR_MASK);
142
143 airoha_fe_rmw(eth, REG_CDM_VLAN_CTRL(1), CDM_VLAN_MASK,
144 FIELD_PREP(CDM_VLAN_MASK, 0x8100));
145
146 airoha_fe_set(eth, REG_FE_CPORT_CFG, FE_CPORT_PAD);
147 }
148
airoha_fe_vip_setup(struct airoha_eth * eth)149 static void airoha_fe_vip_setup(struct airoha_eth *eth)
150 {
151 airoha_fe_wr(eth, REG_FE_VIP_PATN(3), ETH_P_PPP_DISC);
152 airoha_fe_wr(eth, REG_FE_VIP_EN(3), PATN_FCPU_EN_MASK | PATN_EN_MASK);
153
154 airoha_fe_wr(eth, REG_FE_VIP_PATN(4), PPP_LCP);
155 airoha_fe_wr(eth, REG_FE_VIP_EN(4),
156 PATN_FCPU_EN_MASK | FIELD_PREP(PATN_TYPE_MASK, 1) |
157 PATN_EN_MASK);
158
159 airoha_fe_wr(eth, REG_FE_VIP_PATN(6), PPP_IPCP);
160 airoha_fe_wr(eth, REG_FE_VIP_EN(6),
161 PATN_FCPU_EN_MASK | FIELD_PREP(PATN_TYPE_MASK, 1) |
162 PATN_EN_MASK);
163
164 airoha_fe_wr(eth, REG_FE_VIP_PATN(7), PPP_CHAP);
165 airoha_fe_wr(eth, REG_FE_VIP_EN(7),
166 PATN_FCPU_EN_MASK | FIELD_PREP(PATN_TYPE_MASK, 1) |
167 PATN_EN_MASK);
168
169 /* BOOTP (0x43) */
170 airoha_fe_wr(eth, REG_FE_VIP_PATN(8), 0x43);
171 airoha_fe_wr(eth, REG_FE_VIP_EN(8),
172 PATN_FCPU_EN_MASK | PATN_SP_EN_MASK |
173 FIELD_PREP(PATN_TYPE_MASK, 4) | PATN_EN_MASK);
174
175 /* BOOTP (0x44) */
176 airoha_fe_wr(eth, REG_FE_VIP_PATN(9), 0x44);
177 airoha_fe_wr(eth, REG_FE_VIP_EN(9),
178 PATN_FCPU_EN_MASK | PATN_SP_EN_MASK |
179 FIELD_PREP(PATN_TYPE_MASK, 4) | PATN_EN_MASK);
180
181 /* ISAKMP */
182 airoha_fe_wr(eth, REG_FE_VIP_PATN(10), 0x1f401f4);
183 airoha_fe_wr(eth, REG_FE_VIP_EN(10),
184 PATN_FCPU_EN_MASK | PATN_DP_EN_MASK | PATN_SP_EN_MASK |
185 FIELD_PREP(PATN_TYPE_MASK, 4) | PATN_EN_MASK);
186
187 airoha_fe_wr(eth, REG_FE_VIP_PATN(11), PPP_IPV6CP);
188 airoha_fe_wr(eth, REG_FE_VIP_EN(11),
189 PATN_FCPU_EN_MASK | FIELD_PREP(PATN_TYPE_MASK, 1) |
190 PATN_EN_MASK);
191
192 /* DHCPv6 */
193 airoha_fe_wr(eth, REG_FE_VIP_PATN(12), 0x2220223);
194 airoha_fe_wr(eth, REG_FE_VIP_EN(12),
195 PATN_FCPU_EN_MASK | PATN_DP_EN_MASK | PATN_SP_EN_MASK |
196 FIELD_PREP(PATN_TYPE_MASK, 4) | PATN_EN_MASK);
197
198 airoha_fe_wr(eth, REG_FE_VIP_PATN(19), PPP_PAP);
199 airoha_fe_wr(eth, REG_FE_VIP_EN(19),
200 PATN_FCPU_EN_MASK | FIELD_PREP(PATN_TYPE_MASK, 1) |
201 PATN_EN_MASK);
202
203 /* ETH->ETH_P_1905 (0x893a) */
204 airoha_fe_wr(eth, REG_FE_VIP_PATN(20), 0x893a);
205 airoha_fe_wr(eth, REG_FE_VIP_EN(20),
206 PATN_FCPU_EN_MASK | PATN_EN_MASK);
207
208 airoha_fe_wr(eth, REG_FE_VIP_PATN(21), ETH_P_LLDP);
209 airoha_fe_wr(eth, REG_FE_VIP_EN(21),
210 PATN_FCPU_EN_MASK | PATN_EN_MASK);
211 }
212
airoha_fe_get_pse_queue_rsv_pages(struct airoha_eth * eth,u32 port,u32 queue)213 static u32 airoha_fe_get_pse_queue_rsv_pages(struct airoha_eth *eth,
214 u32 port, u32 queue)
215 {
216 u32 val;
217
218 airoha_fe_rmw(eth, REG_FE_PSE_QUEUE_CFG_WR,
219 PSE_CFG_PORT_ID_MASK | PSE_CFG_QUEUE_ID_MASK,
220 FIELD_PREP(PSE_CFG_PORT_ID_MASK, port) |
221 FIELD_PREP(PSE_CFG_QUEUE_ID_MASK, queue));
222 val = airoha_fe_rr(eth, REG_FE_PSE_QUEUE_CFG_VAL);
223
224 return FIELD_GET(PSE_CFG_OQ_RSV_MASK, val);
225 }
226
airoha_fe_set_pse_queue_rsv_pages(struct airoha_eth * eth,u32 port,u32 queue,u32 val)227 static void airoha_fe_set_pse_queue_rsv_pages(struct airoha_eth *eth,
228 u32 port, u32 queue, u32 val)
229 {
230 airoha_fe_rmw(eth, REG_FE_PSE_QUEUE_CFG_VAL, PSE_CFG_OQ_RSV_MASK,
231 FIELD_PREP(PSE_CFG_OQ_RSV_MASK, val));
232 airoha_fe_rmw(eth, REG_FE_PSE_QUEUE_CFG_WR,
233 PSE_CFG_PORT_ID_MASK | PSE_CFG_QUEUE_ID_MASK |
234 PSE_CFG_WR_EN_MASK | PSE_CFG_OQRSV_SEL_MASK,
235 FIELD_PREP(PSE_CFG_PORT_ID_MASK, port) |
236 FIELD_PREP(PSE_CFG_QUEUE_ID_MASK, queue) |
237 PSE_CFG_WR_EN_MASK | PSE_CFG_OQRSV_SEL_MASK);
238 }
239
airoha_fe_get_pse_all_rsv(struct airoha_eth * eth)240 static u32 airoha_fe_get_pse_all_rsv(struct airoha_eth *eth)
241 {
242 u32 val = airoha_fe_rr(eth, REG_FE_PSE_BUF_SET);
243
244 return FIELD_GET(PSE_ALLRSV_MASK, val);
245 }
246
airoha_fe_set_pse_oq_rsv(struct airoha_eth * eth,u32 port,u32 queue,u32 val)247 static int airoha_fe_set_pse_oq_rsv(struct airoha_eth *eth,
248 u32 port, u32 queue, u32 val)
249 {
250 u32 orig_val = airoha_fe_get_pse_queue_rsv_pages(eth, port, queue);
251 u32 tmp, all_rsv, fq_limit;
252
253 airoha_fe_set_pse_queue_rsv_pages(eth, port, queue, val);
254
255 /* modify all rsv */
256 all_rsv = airoha_fe_get_pse_all_rsv(eth);
257 all_rsv += (val - orig_val);
258 airoha_fe_rmw(eth, REG_FE_PSE_BUF_SET, PSE_ALLRSV_MASK,
259 FIELD_PREP(PSE_ALLRSV_MASK, all_rsv));
260
261 /* modify hthd */
262 tmp = airoha_fe_rr(eth, PSE_FQ_CFG);
263 fq_limit = FIELD_GET(PSE_FQ_LIMIT_MASK, tmp);
264 tmp = fq_limit - all_rsv - 0x20;
265 airoha_fe_rmw(eth, REG_PSE_SHARE_USED_THD,
266 PSE_SHARE_USED_HTHD_MASK,
267 FIELD_PREP(PSE_SHARE_USED_HTHD_MASK, tmp));
268
269 tmp = fq_limit - all_rsv - 0x100;
270 airoha_fe_rmw(eth, REG_PSE_SHARE_USED_THD,
271 PSE_SHARE_USED_MTHD_MASK,
272 FIELD_PREP(PSE_SHARE_USED_MTHD_MASK, tmp));
273 tmp = (3 * tmp) >> 2;
274 airoha_fe_rmw(eth, REG_FE_PSE_BUF_SET,
275 PSE_SHARE_USED_LTHD_MASK,
276 FIELD_PREP(PSE_SHARE_USED_LTHD_MASK, tmp));
277
278 return 0;
279 }
280
airoha_fe_pse_ports_init(struct airoha_eth * eth)281 static void airoha_fe_pse_ports_init(struct airoha_eth *eth)
282 {
283 const u32 pse_port_num_queues[] = {
284 [FE_PSE_PORT_CDM1] = 6,
285 [FE_PSE_PORT_GDM1] = 6,
286 [FE_PSE_PORT_GDM2] = 32,
287 [FE_PSE_PORT_GDM3] = 6,
288 [FE_PSE_PORT_PPE1] = 4,
289 [FE_PSE_PORT_CDM2] = 6,
290 [FE_PSE_PORT_CDM3] = 8,
291 [FE_PSE_PORT_CDM4] = 10,
292 [FE_PSE_PORT_PPE2] = 4,
293 [FE_PSE_PORT_GDM4] = 2,
294 [FE_PSE_PORT_CDM5] = 2,
295 };
296 u32 all_rsv;
297 int q;
298
299 all_rsv = airoha_fe_get_pse_all_rsv(eth);
300 if (airoha_ppe_is_enabled(eth, 1)) {
301 /* hw misses PPE2 oq rsv */
302 all_rsv += PSE_RSV_PAGES *
303 pse_port_num_queues[FE_PSE_PORT_PPE2];
304 }
305 airoha_fe_set(eth, REG_FE_PSE_BUF_SET, all_rsv);
306
307 /* CMD1 */
308 for (q = 0; q < pse_port_num_queues[FE_PSE_PORT_CDM1]; q++)
309 airoha_fe_set_pse_oq_rsv(eth, FE_PSE_PORT_CDM1, q,
310 PSE_QUEUE_RSV_PAGES);
311 /* GMD1 */
312 for (q = 0; q < pse_port_num_queues[FE_PSE_PORT_GDM1]; q++)
313 airoha_fe_set_pse_oq_rsv(eth, FE_PSE_PORT_GDM1, q,
314 PSE_QUEUE_RSV_PAGES);
315 /* GMD2 */
316 for (q = 6; q < pse_port_num_queues[FE_PSE_PORT_GDM2]; q++)
317 airoha_fe_set_pse_oq_rsv(eth, FE_PSE_PORT_GDM2, q, 0);
318 /* GMD3 */
319 for (q = 0; q < pse_port_num_queues[FE_PSE_PORT_GDM3]; q++)
320 airoha_fe_set_pse_oq_rsv(eth, FE_PSE_PORT_GDM3, q,
321 PSE_QUEUE_RSV_PAGES);
322 /* PPE1 */
323 for (q = 0; q < pse_port_num_queues[FE_PSE_PORT_PPE1]; q++) {
324 if (q < pse_port_num_queues[FE_PSE_PORT_PPE1])
325 airoha_fe_set_pse_oq_rsv(eth, FE_PSE_PORT_PPE1, q,
326 PSE_QUEUE_RSV_PAGES);
327 else
328 airoha_fe_set_pse_oq_rsv(eth, FE_PSE_PORT_PPE1, q, 0);
329 }
330 /* CDM2 */
331 for (q = 0; q < pse_port_num_queues[FE_PSE_PORT_CDM2]; q++)
332 airoha_fe_set_pse_oq_rsv(eth, FE_PSE_PORT_CDM2, q,
333 PSE_QUEUE_RSV_PAGES);
334 /* CDM3 */
335 for (q = 0; q < pse_port_num_queues[FE_PSE_PORT_CDM3] - 1; q++)
336 airoha_fe_set_pse_oq_rsv(eth, FE_PSE_PORT_CDM3, q, 0);
337 /* CDM4 */
338 for (q = 4; q < pse_port_num_queues[FE_PSE_PORT_CDM4]; q++)
339 airoha_fe_set_pse_oq_rsv(eth, FE_PSE_PORT_CDM4, q,
340 PSE_QUEUE_RSV_PAGES);
341 if (airoha_ppe_is_enabled(eth, 1)) {
342 /* PPE2 */
343 for (q = 0; q < pse_port_num_queues[FE_PSE_PORT_PPE2]; q++) {
344 if (q < pse_port_num_queues[FE_PSE_PORT_PPE2] / 2)
345 airoha_fe_set_pse_oq_rsv(eth, FE_PSE_PORT_PPE2,
346 q,
347 PSE_QUEUE_RSV_PAGES);
348 else
349 airoha_fe_set_pse_oq_rsv(eth, FE_PSE_PORT_PPE2,
350 q, 0);
351 }
352 }
353 /* GMD4 */
354 for (q = 0; q < pse_port_num_queues[FE_PSE_PORT_GDM4]; q++)
355 airoha_fe_set_pse_oq_rsv(eth, FE_PSE_PORT_GDM4, q,
356 PSE_QUEUE_RSV_PAGES);
357 /* CDM5 */
358 for (q = 0; q < pse_port_num_queues[FE_PSE_PORT_CDM5]; q++)
359 airoha_fe_set_pse_oq_rsv(eth, FE_PSE_PORT_CDM5, q,
360 PSE_QUEUE_RSV_PAGES);
361 }
362
airoha_fe_mc_vlan_clear(struct airoha_eth * eth)363 static int airoha_fe_mc_vlan_clear(struct airoha_eth *eth)
364 {
365 int i;
366
367 for (i = 0; i < AIROHA_FE_MC_MAX_VLAN_TABLE; i++) {
368 int err, j;
369 u32 val;
370
371 airoha_fe_wr(eth, REG_MC_VLAN_DATA, 0x0);
372
373 val = FIELD_PREP(MC_VLAN_CFG_TABLE_ID_MASK, i) |
374 MC_VLAN_CFG_TABLE_SEL_MASK | MC_VLAN_CFG_RW_MASK;
375 airoha_fe_wr(eth, REG_MC_VLAN_CFG, val);
376 err = read_poll_timeout(airoha_fe_rr, val,
377 val & MC_VLAN_CFG_CMD_DONE_MASK,
378 USEC_PER_MSEC, 5 * USEC_PER_MSEC,
379 false, eth, REG_MC_VLAN_CFG);
380 if (err)
381 return err;
382
383 for (j = 0; j < AIROHA_FE_MC_MAX_VLAN_PORT; j++) {
384 airoha_fe_wr(eth, REG_MC_VLAN_DATA, 0x0);
385
386 val = FIELD_PREP(MC_VLAN_CFG_TABLE_ID_MASK, i) |
387 FIELD_PREP(MC_VLAN_CFG_PORT_ID_MASK, j) |
388 MC_VLAN_CFG_RW_MASK;
389 airoha_fe_wr(eth, REG_MC_VLAN_CFG, val);
390 err = read_poll_timeout(airoha_fe_rr, val,
391 val & MC_VLAN_CFG_CMD_DONE_MASK,
392 USEC_PER_MSEC,
393 5 * USEC_PER_MSEC, false, eth,
394 REG_MC_VLAN_CFG);
395 if (err)
396 return err;
397 }
398 }
399
400 return 0;
401 }
402
airoha_fe_crsn_qsel_init(struct airoha_eth * eth)403 static void airoha_fe_crsn_qsel_init(struct airoha_eth *eth)
404 {
405 /* CDM1_CRSN_QSEL */
406 airoha_fe_rmw(eth, REG_CDM_CRSN_QSEL(1, CRSN_22 >> 2),
407 CDM_CRSN_QSEL_REASON_MASK(CRSN_22),
408 FIELD_PREP(CDM_CRSN_QSEL_REASON_MASK(CRSN_22),
409 CDM_CRSN_QSEL_Q1));
410 airoha_fe_rmw(eth, REG_CDM_CRSN_QSEL(1, CRSN_08 >> 2),
411 CDM_CRSN_QSEL_REASON_MASK(CRSN_08),
412 FIELD_PREP(CDM_CRSN_QSEL_REASON_MASK(CRSN_08),
413 CDM_CRSN_QSEL_Q1));
414 airoha_fe_rmw(eth, REG_CDM_CRSN_QSEL(1, CRSN_21 >> 2),
415 CDM_CRSN_QSEL_REASON_MASK(CRSN_21),
416 FIELD_PREP(CDM_CRSN_QSEL_REASON_MASK(CRSN_21),
417 CDM_CRSN_QSEL_Q1));
418 airoha_fe_rmw(eth, REG_CDM_CRSN_QSEL(1, CRSN_24 >> 2),
419 CDM_CRSN_QSEL_REASON_MASK(CRSN_24),
420 FIELD_PREP(CDM_CRSN_QSEL_REASON_MASK(CRSN_24),
421 CDM_CRSN_QSEL_Q6));
422 airoha_fe_rmw(eth, REG_CDM_CRSN_QSEL(1, CRSN_25 >> 2),
423 CDM_CRSN_QSEL_REASON_MASK(CRSN_25),
424 FIELD_PREP(CDM_CRSN_QSEL_REASON_MASK(CRSN_25),
425 CDM_CRSN_QSEL_Q1));
426 /* CDM2_CRSN_QSEL */
427 airoha_fe_rmw(eth, REG_CDM_CRSN_QSEL(2, CRSN_08 >> 2),
428 CDM_CRSN_QSEL_REASON_MASK(CRSN_08),
429 FIELD_PREP(CDM_CRSN_QSEL_REASON_MASK(CRSN_08),
430 CDM_CRSN_QSEL_Q1));
431 airoha_fe_rmw(eth, REG_CDM_CRSN_QSEL(2, CRSN_21 >> 2),
432 CDM_CRSN_QSEL_REASON_MASK(CRSN_21),
433 FIELD_PREP(CDM_CRSN_QSEL_REASON_MASK(CRSN_21),
434 CDM_CRSN_QSEL_Q1));
435 airoha_fe_rmw(eth, REG_CDM_CRSN_QSEL(2, CRSN_22 >> 2),
436 CDM_CRSN_QSEL_REASON_MASK(CRSN_22),
437 FIELD_PREP(CDM_CRSN_QSEL_REASON_MASK(CRSN_22),
438 CDM_CRSN_QSEL_Q1));
439 airoha_fe_rmw(eth, REG_CDM_CRSN_QSEL(2, CRSN_24 >> 2),
440 CDM_CRSN_QSEL_REASON_MASK(CRSN_24),
441 FIELD_PREP(CDM_CRSN_QSEL_REASON_MASK(CRSN_24),
442 CDM_CRSN_QSEL_Q6));
443 airoha_fe_rmw(eth, REG_CDM_CRSN_QSEL(2, CRSN_25 >> 2),
444 CDM_CRSN_QSEL_REASON_MASK(CRSN_25),
445 FIELD_PREP(CDM_CRSN_QSEL_REASON_MASK(CRSN_25),
446 CDM_CRSN_QSEL_Q1));
447 }
448
airoha_fe_init(struct airoha_eth * eth)449 static int airoha_fe_init(struct airoha_eth *eth)
450 {
451 airoha_fe_maccr_init(eth);
452
453 /* PSE IQ reserve */
454 airoha_fe_rmw(eth, REG_PSE_IQ_REV1, PSE_IQ_RES1_P2_MASK,
455 FIELD_PREP(PSE_IQ_RES1_P2_MASK, 0x10));
456 airoha_fe_rmw(eth, REG_PSE_IQ_REV2,
457 PSE_IQ_RES2_P5_MASK | PSE_IQ_RES2_P4_MASK,
458 FIELD_PREP(PSE_IQ_RES2_P5_MASK, 0x40) |
459 FIELD_PREP(PSE_IQ_RES2_P4_MASK, 0x34));
460
461 /* enable FE copy engine for MC/KA/DPI */
462 airoha_fe_wr(eth, REG_FE_PCE_CFG,
463 PCE_DPI_EN_MASK | PCE_KA_EN_MASK | PCE_MC_EN_MASK);
464 /* set vip queue selection to ring 1 */
465 airoha_fe_rmw(eth, REG_CDM_FWD_CFG(1), CDM_VIP_QSEL_MASK,
466 FIELD_PREP(CDM_VIP_QSEL_MASK, 0x4));
467 airoha_fe_rmw(eth, REG_CDM_FWD_CFG(2), CDM_VIP_QSEL_MASK,
468 FIELD_PREP(CDM_VIP_QSEL_MASK, 0x4));
469 /* set GDM4 source interface offset to 8 */
470 airoha_fe_rmw(eth, REG_GDM_SRC_PORT_SET(4),
471 GDM_SPORT_OFF2_MASK |
472 GDM_SPORT_OFF1_MASK |
473 GDM_SPORT_OFF0_MASK,
474 FIELD_PREP(GDM_SPORT_OFF2_MASK, 8) |
475 FIELD_PREP(GDM_SPORT_OFF1_MASK, 8) |
476 FIELD_PREP(GDM_SPORT_OFF0_MASK, 8));
477
478 /* set PSE Page as 128B */
479 airoha_fe_rmw(eth, REG_FE_DMA_GLO_CFG,
480 FE_DMA_GLO_L2_SPACE_MASK | FE_DMA_GLO_PG_SZ_MASK,
481 FIELD_PREP(FE_DMA_GLO_L2_SPACE_MASK, 2) |
482 FE_DMA_GLO_PG_SZ_MASK);
483 airoha_fe_wr(eth, REG_FE_RST_GLO_CFG,
484 FE_RST_CORE_MASK | FE_RST_GDM3_MBI_ARB_MASK |
485 FE_RST_GDM4_MBI_ARB_MASK);
486 usleep_range(1000, 2000);
487
488 /* connect RxRing1 and RxRing15 to PSE Port0 OQ-1
489 * connect other rings to PSE Port0 OQ-0
490 */
491 airoha_fe_wr(eth, REG_FE_CDM1_OQ_MAP0, BIT(4));
492 airoha_fe_wr(eth, REG_FE_CDM1_OQ_MAP1, BIT(28));
493 airoha_fe_wr(eth, REG_FE_CDM1_OQ_MAP2, BIT(4));
494 airoha_fe_wr(eth, REG_FE_CDM1_OQ_MAP3, BIT(28));
495
496 airoha_fe_vip_setup(eth);
497 airoha_fe_pse_ports_init(eth);
498
499 airoha_fe_set(eth, REG_GDM_MISC_CFG,
500 GDM2_RDM_ACK_WAIT_PREF_MASK |
501 GDM2_CHN_VLD_MODE_MASK);
502 airoha_fe_rmw(eth, REG_CDM_FWD_CFG(2), CDM_OAM_QSEL_MASK,
503 FIELD_PREP(CDM_OAM_QSEL_MASK, 15));
504
505 /* init fragment and assemble Force Port */
506 /* NPU Core-3, NPU Bridge Channel-3 */
507 airoha_fe_rmw(eth, REG_IP_FRAG_FP,
508 IP_FRAGMENT_PORT_MASK | IP_FRAGMENT_NBQ_MASK,
509 FIELD_PREP(IP_FRAGMENT_PORT_MASK, 6) |
510 FIELD_PREP(IP_FRAGMENT_NBQ_MASK, 3));
511 /* QDMA LAN, RX Ring-22 */
512 airoha_fe_rmw(eth, REG_IP_FRAG_FP,
513 IP_ASSEMBLE_PORT_MASK | IP_ASSEMBLE_NBQ_MASK,
514 FIELD_PREP(IP_ASSEMBLE_PORT_MASK, 0) |
515 FIELD_PREP(IP_ASSEMBLE_NBQ_MASK, 22));
516
517 airoha_fe_set(eth, REG_GDM_FWD_CFG(3), GDM_PAD_EN_MASK);
518 airoha_fe_set(eth, REG_GDM_FWD_CFG(4), GDM_PAD_EN_MASK);
519
520 airoha_fe_crsn_qsel_init(eth);
521
522 airoha_fe_clear(eth, REG_FE_CPORT_CFG, FE_CPORT_QUEUE_XFC_MASK);
523 airoha_fe_set(eth, REG_FE_CPORT_CFG, FE_CPORT_PORT_XFC_MASK);
524
525 /* default aging mode for mbi unlock issue */
526 airoha_fe_rmw(eth, REG_GDM_CHN_RLS(2),
527 MBI_RX_AGE_SEL_MASK | MBI_TX_AGE_SEL_MASK,
528 FIELD_PREP(MBI_RX_AGE_SEL_MASK, 3) |
529 FIELD_PREP(MBI_TX_AGE_SEL_MASK, 3));
530
531 /* disable IFC by default */
532 airoha_fe_clear(eth, REG_FE_CSR_IFC_CFG, FE_IFC_EN_MASK);
533
534 /* enable 1:N vlan action, init vlan table */
535 airoha_fe_set(eth, REG_MC_VLAN_EN, MC_VLAN_EN_MASK);
536
537 return airoha_fe_mc_vlan_clear(eth);
538 }
539
airoha_qdma_fill_rx_queue(struct airoha_queue * q)540 static int airoha_qdma_fill_rx_queue(struct airoha_queue *q)
541 {
542 struct airoha_qdma *qdma = q->qdma;
543 int qid = q - &qdma->q_rx[0];
544 int nframes = 0;
545
546 while (q->queued < q->ndesc - 1) {
547 struct airoha_queue_entry *e = &q->entry[q->head];
548 struct airoha_qdma_desc *desc = &q->desc[q->head];
549 struct page *page;
550 int offset;
551 u32 val;
552
553 page = page_pool_dev_alloc_frag(q->page_pool, &offset,
554 q->buf_size);
555 if (!page)
556 break;
557
558 q->head = (q->head + 1) % q->ndesc;
559 q->queued++;
560 nframes++;
561
562 e->buf = page_address(page) + offset;
563 e->dma_addr = page_pool_get_dma_addr(page) + offset;
564 e->dma_len = SKB_WITH_OVERHEAD(q->buf_size);
565
566 val = FIELD_PREP(QDMA_DESC_LEN_MASK, e->dma_len);
567 WRITE_ONCE(desc->ctrl, cpu_to_le32(val));
568 WRITE_ONCE(desc->addr, cpu_to_le32(e->dma_addr));
569 val = FIELD_PREP(QDMA_DESC_NEXT_ID_MASK, q->head);
570 WRITE_ONCE(desc->data, cpu_to_le32(val));
571 WRITE_ONCE(desc->msg0, 0);
572 WRITE_ONCE(desc->msg1, 0);
573 WRITE_ONCE(desc->msg2, 0);
574 WRITE_ONCE(desc->msg3, 0);
575
576 airoha_qdma_rmw(qdma, REG_RX_CPU_IDX(qid),
577 RX_RING_CPU_IDX_MASK,
578 FIELD_PREP(RX_RING_CPU_IDX_MASK, q->head));
579 }
580
581 return nframes;
582 }
583
airoha_qdma_get_gdm_port(struct airoha_eth * eth,struct airoha_qdma_desc * desc)584 static int airoha_qdma_get_gdm_port(struct airoha_eth *eth,
585 struct airoha_qdma_desc *desc)
586 {
587 u32 port, sport, msg1 = le32_to_cpu(desc->msg1);
588
589 sport = FIELD_GET(QDMA_ETH_RXMSG_SPORT_MASK, msg1);
590 switch (sport) {
591 case 0x10 ... 0x14:
592 port = 0;
593 break;
594 case 0x2 ... 0x4:
595 port = sport - 1;
596 break;
597 default:
598 return -EINVAL;
599 }
600
601 return port >= ARRAY_SIZE(eth->ports) ? -EINVAL : port;
602 }
603
airoha_qdma_rx_process(struct airoha_queue * q,int budget)604 static int airoha_qdma_rx_process(struct airoha_queue *q, int budget)
605 {
606 enum dma_data_direction dir = page_pool_get_dma_dir(q->page_pool);
607 struct airoha_qdma *qdma = q->qdma;
608 struct airoha_eth *eth = qdma->eth;
609 int qid = q - &qdma->q_rx[0];
610 int done = 0;
611
612 while (done < budget) {
613 struct airoha_queue_entry *e = &q->entry[q->tail];
614 struct airoha_qdma_desc *desc = &q->desc[q->tail];
615 u32 hash, reason, msg1 = le32_to_cpu(desc->msg1);
616 struct page *page = virt_to_head_page(e->buf);
617 u32 desc_ctrl = le32_to_cpu(desc->ctrl);
618 struct airoha_gdm_port *port;
619 int data_len, len, p;
620
621 if (!(desc_ctrl & QDMA_DESC_DONE_MASK))
622 break;
623
624 q->tail = (q->tail + 1) % q->ndesc;
625 q->queued--;
626
627 dma_sync_single_for_cpu(eth->dev, e->dma_addr,
628 SKB_WITH_OVERHEAD(q->buf_size), dir);
629
630 len = FIELD_GET(QDMA_DESC_LEN_MASK, desc_ctrl);
631 data_len = q->skb ? q->buf_size
632 : SKB_WITH_OVERHEAD(q->buf_size);
633 if (!len || data_len < len)
634 goto free_frag;
635
636 p = airoha_qdma_get_gdm_port(eth, desc);
637 if (p < 0 || !eth->ports[p])
638 goto free_frag;
639
640 port = eth->ports[p];
641 if (!q->skb) { /* first buffer */
642 q->skb = napi_build_skb(e->buf, q->buf_size);
643 if (!q->skb)
644 goto free_frag;
645
646 __skb_put(q->skb, len);
647 skb_mark_for_recycle(q->skb);
648 q->skb->dev = port->dev;
649 q->skb->protocol = eth_type_trans(q->skb, port->dev);
650 q->skb->ip_summed = CHECKSUM_UNNECESSARY;
651 skb_record_rx_queue(q->skb, qid);
652 } else { /* scattered frame */
653 struct skb_shared_info *shinfo = skb_shinfo(q->skb);
654 int nr_frags = shinfo->nr_frags;
655
656 if (nr_frags >= ARRAY_SIZE(shinfo->frags))
657 goto free_frag;
658
659 skb_add_rx_frag(q->skb, nr_frags, page,
660 e->buf - page_address(page), len,
661 q->buf_size);
662 }
663
664 if (FIELD_GET(QDMA_DESC_MORE_MASK, desc_ctrl))
665 continue;
666
667 if (netdev_uses_dsa(port->dev)) {
668 /* PPE module requires untagged packets to work
669 * properly and it provides DSA port index via the
670 * DMA descriptor. Report DSA tag to the DSA stack
671 * via skb dst info.
672 */
673 u32 sptag = FIELD_GET(QDMA_ETH_RXMSG_SPTAG,
674 le32_to_cpu(desc->msg0));
675
676 if (sptag < ARRAY_SIZE(port->dsa_meta) &&
677 port->dsa_meta[sptag])
678 skb_dst_set_noref(q->skb,
679 &port->dsa_meta[sptag]->dst);
680 }
681
682 hash = FIELD_GET(AIROHA_RXD4_FOE_ENTRY, msg1);
683 if (hash != AIROHA_RXD4_FOE_ENTRY)
684 skb_set_hash(q->skb, jhash_1word(hash, 0),
685 PKT_HASH_TYPE_L4);
686
687 reason = FIELD_GET(AIROHA_RXD4_PPE_CPU_REASON, msg1);
688 if (reason == PPE_CPU_REASON_HIT_UNBIND_RATE_REACHED)
689 airoha_ppe_check_skb(ð->ppe->dev, q->skb, hash,
690 false);
691
692 done++;
693 napi_gro_receive(&q->napi, q->skb);
694 q->skb = NULL;
695 continue;
696 free_frag:
697 if (q->skb) {
698 dev_kfree_skb(q->skb);
699 q->skb = NULL;
700 } else {
701 page_pool_put_full_page(q->page_pool, page, true);
702 }
703 }
704 airoha_qdma_fill_rx_queue(q);
705
706 return done;
707 }
708
airoha_qdma_rx_napi_poll(struct napi_struct * napi,int budget)709 static int airoha_qdma_rx_napi_poll(struct napi_struct *napi, int budget)
710 {
711 struct airoha_queue *q = container_of(napi, struct airoha_queue, napi);
712 int cur, done = 0;
713
714 do {
715 cur = airoha_qdma_rx_process(q, budget - done);
716 done += cur;
717 } while (cur && done < budget);
718
719 if (done < budget && napi_complete(napi)) {
720 struct airoha_qdma *qdma = q->qdma;
721 int i, qid = q - &qdma->q_rx[0];
722 int intr_reg = qid < RX_DONE_HIGH_OFFSET ? QDMA_INT_REG_IDX1
723 : QDMA_INT_REG_IDX2;
724
725 for (i = 0; i < ARRAY_SIZE(qdma->irq_banks); i++) {
726 if (!(BIT(qid) & RX_IRQ_BANK_PIN_MASK(i)))
727 continue;
728
729 airoha_qdma_irq_enable(&qdma->irq_banks[i], intr_reg,
730 BIT(qid % RX_DONE_HIGH_OFFSET));
731 }
732 }
733
734 return done;
735 }
736
airoha_qdma_init_rx_queue(struct airoha_queue * q,struct airoha_qdma * qdma,int ndesc)737 static int airoha_qdma_init_rx_queue(struct airoha_queue *q,
738 struct airoha_qdma *qdma, int ndesc)
739 {
740 const struct page_pool_params pp_params = {
741 .order = 0,
742 .pool_size = 256,
743 .flags = PP_FLAG_DMA_MAP | PP_FLAG_DMA_SYNC_DEV,
744 .dma_dir = DMA_FROM_DEVICE,
745 .max_len = PAGE_SIZE,
746 .nid = NUMA_NO_NODE,
747 .dev = qdma->eth->dev,
748 .napi = &q->napi,
749 };
750 struct airoha_eth *eth = qdma->eth;
751 int qid = q - &qdma->q_rx[0], thr;
752 dma_addr_t dma_addr;
753
754 q->buf_size = PAGE_SIZE / 2;
755 q->ndesc = ndesc;
756 q->qdma = qdma;
757
758 q->entry = devm_kzalloc(eth->dev, q->ndesc * sizeof(*q->entry),
759 GFP_KERNEL);
760 if (!q->entry)
761 return -ENOMEM;
762
763 q->page_pool = page_pool_create(&pp_params);
764 if (IS_ERR(q->page_pool)) {
765 int err = PTR_ERR(q->page_pool);
766
767 q->page_pool = NULL;
768 return err;
769 }
770
771 q->desc = dmam_alloc_coherent(eth->dev, q->ndesc * sizeof(*q->desc),
772 &dma_addr, GFP_KERNEL);
773 if (!q->desc)
774 return -ENOMEM;
775
776 netif_napi_add(eth->napi_dev, &q->napi, airoha_qdma_rx_napi_poll);
777
778 airoha_qdma_wr(qdma, REG_RX_RING_BASE(qid), dma_addr);
779 airoha_qdma_rmw(qdma, REG_RX_RING_SIZE(qid),
780 RX_RING_SIZE_MASK,
781 FIELD_PREP(RX_RING_SIZE_MASK, ndesc));
782
783 thr = clamp(ndesc >> 3, 1, 32);
784 airoha_qdma_rmw(qdma, REG_RX_RING_SIZE(qid), RX_RING_THR_MASK,
785 FIELD_PREP(RX_RING_THR_MASK, thr));
786 airoha_qdma_rmw(qdma, REG_RX_DMA_IDX(qid), RX_RING_DMA_IDX_MASK,
787 FIELD_PREP(RX_RING_DMA_IDX_MASK, q->head));
788 airoha_qdma_set(qdma, REG_RX_SCATTER_CFG(qid), RX_RING_SG_EN_MASK);
789
790 airoha_qdma_fill_rx_queue(q);
791
792 return 0;
793 }
794
airoha_qdma_cleanup_rx_queue(struct airoha_queue * q)795 static void airoha_qdma_cleanup_rx_queue(struct airoha_queue *q)
796 {
797 struct airoha_eth *eth = q->qdma->eth;
798
799 while (q->queued) {
800 struct airoha_queue_entry *e = &q->entry[q->tail];
801 struct page *page = virt_to_head_page(e->buf);
802
803 dma_sync_single_for_cpu(eth->dev, e->dma_addr, e->dma_len,
804 page_pool_get_dma_dir(q->page_pool));
805 page_pool_put_full_page(q->page_pool, page, false);
806 q->tail = (q->tail + 1) % q->ndesc;
807 q->queued--;
808 }
809 }
810
airoha_qdma_init_rx(struct airoha_qdma * qdma)811 static int airoha_qdma_init_rx(struct airoha_qdma *qdma)
812 {
813 int i;
814
815 for (i = 0; i < ARRAY_SIZE(qdma->q_rx); i++) {
816 int err;
817
818 if (!(RX_DONE_INT_MASK & BIT(i))) {
819 /* rx-queue not binded to irq */
820 continue;
821 }
822
823 err = airoha_qdma_init_rx_queue(&qdma->q_rx[i], qdma,
824 RX_DSCP_NUM(i));
825 if (err)
826 return err;
827 }
828
829 return 0;
830 }
831
airoha_qdma_tx_napi_poll(struct napi_struct * napi,int budget)832 static int airoha_qdma_tx_napi_poll(struct napi_struct *napi, int budget)
833 {
834 struct airoha_tx_irq_queue *irq_q;
835 int id, done = 0, irq_queued;
836 struct airoha_qdma *qdma;
837 struct airoha_eth *eth;
838 u32 status, head;
839
840 irq_q = container_of(napi, struct airoha_tx_irq_queue, napi);
841 qdma = irq_q->qdma;
842 id = irq_q - &qdma->q_tx_irq[0];
843 eth = qdma->eth;
844
845 status = airoha_qdma_rr(qdma, REG_IRQ_STATUS(id));
846 head = FIELD_GET(IRQ_HEAD_IDX_MASK, status);
847 head = head % irq_q->size;
848 irq_queued = FIELD_GET(IRQ_ENTRY_LEN_MASK, status);
849
850 while (irq_queued > 0 && done < budget) {
851 u32 qid, val = irq_q->q[head];
852 struct airoha_qdma_desc *desc;
853 struct airoha_queue_entry *e;
854 struct airoha_queue *q;
855 u32 index, desc_ctrl;
856 struct sk_buff *skb;
857
858 if (val == 0xff)
859 break;
860
861 irq_q->q[head] = 0xff; /* mark as done */
862 head = (head + 1) % irq_q->size;
863 irq_queued--;
864 done++;
865
866 qid = FIELD_GET(IRQ_RING_IDX_MASK, val);
867 if (qid >= ARRAY_SIZE(qdma->q_tx))
868 continue;
869
870 q = &qdma->q_tx[qid];
871 if (!q->ndesc)
872 continue;
873
874 index = FIELD_GET(IRQ_DESC_IDX_MASK, val);
875 if (index >= q->ndesc)
876 continue;
877
878 spin_lock_bh(&q->lock);
879
880 if (!q->queued)
881 goto unlock;
882
883 desc = &q->desc[index];
884 desc_ctrl = le32_to_cpu(desc->ctrl);
885
886 if (!(desc_ctrl & QDMA_DESC_DONE_MASK) &&
887 !(desc_ctrl & QDMA_DESC_DROP_MASK))
888 goto unlock;
889
890 e = &q->entry[index];
891 skb = e->skb;
892
893 dma_unmap_single(eth->dev, e->dma_addr, e->dma_len,
894 DMA_TO_DEVICE);
895 e->dma_addr = 0;
896 list_add_tail(&e->list, &q->tx_list);
897
898 WRITE_ONCE(desc->msg0, 0);
899 WRITE_ONCE(desc->msg1, 0);
900 q->queued--;
901
902 if (skb) {
903 u16 queue = skb_get_queue_mapping(skb);
904 struct netdev_queue *txq;
905
906 txq = netdev_get_tx_queue(skb->dev, queue);
907 netdev_tx_completed_queue(txq, 1, skb->len);
908 if (netif_tx_queue_stopped(txq) &&
909 q->ndesc - q->queued >= q->free_thr)
910 netif_tx_wake_queue(txq);
911
912 dev_kfree_skb_any(skb);
913 }
914 unlock:
915 spin_unlock_bh(&q->lock);
916 }
917
918 if (done) {
919 int i, len = done >> 7;
920
921 for (i = 0; i < len; i++)
922 airoha_qdma_rmw(qdma, REG_IRQ_CLEAR_LEN(id),
923 IRQ_CLEAR_LEN_MASK, 0x80);
924 airoha_qdma_rmw(qdma, REG_IRQ_CLEAR_LEN(id),
925 IRQ_CLEAR_LEN_MASK, (done & 0x7f));
926 }
927
928 if (done < budget && napi_complete(napi))
929 airoha_qdma_irq_enable(&qdma->irq_banks[0], QDMA_INT_REG_IDX0,
930 TX_DONE_INT_MASK(id));
931
932 return done;
933 }
934
airoha_qdma_init_tx_queue(struct airoha_queue * q,struct airoha_qdma * qdma,int size)935 static int airoha_qdma_init_tx_queue(struct airoha_queue *q,
936 struct airoha_qdma *qdma, int size)
937 {
938 struct airoha_eth *eth = qdma->eth;
939 int i, qid = q - &qdma->q_tx[0];
940 dma_addr_t dma_addr;
941
942 spin_lock_init(&q->lock);
943 q->ndesc = size;
944 q->qdma = qdma;
945 q->free_thr = 1 + MAX_SKB_FRAGS;
946 INIT_LIST_HEAD(&q->tx_list);
947
948 q->entry = devm_kzalloc(eth->dev, q->ndesc * sizeof(*q->entry),
949 GFP_KERNEL);
950 if (!q->entry)
951 return -ENOMEM;
952
953 q->desc = dmam_alloc_coherent(eth->dev, q->ndesc * sizeof(*q->desc),
954 &dma_addr, GFP_KERNEL);
955 if (!q->desc)
956 return -ENOMEM;
957
958 for (i = 0; i < q->ndesc; i++) {
959 u32 val = FIELD_PREP(QDMA_DESC_DONE_MASK, 1);
960
961 list_add_tail(&q->entry[i].list, &q->tx_list);
962 WRITE_ONCE(q->desc[i].ctrl, cpu_to_le32(val));
963 }
964
965 /* xmit ring drop default setting */
966 airoha_qdma_set(qdma, REG_TX_RING_BLOCKING(qid),
967 TX_RING_IRQ_BLOCKING_TX_DROP_EN_MASK);
968
969 airoha_qdma_wr(qdma, REG_TX_RING_BASE(qid), dma_addr);
970 airoha_qdma_rmw(qdma, REG_TX_CPU_IDX(qid), TX_RING_CPU_IDX_MASK,
971 FIELD_PREP(TX_RING_CPU_IDX_MASK, 0));
972 airoha_qdma_rmw(qdma, REG_TX_DMA_IDX(qid), TX_RING_DMA_IDX_MASK,
973 FIELD_PREP(TX_RING_DMA_IDX_MASK, 0));
974
975 return 0;
976 }
977
airoha_qdma_tx_irq_init(struct airoha_tx_irq_queue * irq_q,struct airoha_qdma * qdma,int size)978 static int airoha_qdma_tx_irq_init(struct airoha_tx_irq_queue *irq_q,
979 struct airoha_qdma *qdma, int size)
980 {
981 int id = irq_q - &qdma->q_tx_irq[0];
982 struct airoha_eth *eth = qdma->eth;
983 dma_addr_t dma_addr;
984
985 netif_napi_add_tx(eth->napi_dev, &irq_q->napi,
986 airoha_qdma_tx_napi_poll);
987 irq_q->q = dmam_alloc_coherent(eth->dev, size * sizeof(u32),
988 &dma_addr, GFP_KERNEL);
989 if (!irq_q->q)
990 return -ENOMEM;
991
992 memset(irq_q->q, 0xff, size * sizeof(u32));
993 irq_q->size = size;
994 irq_q->qdma = qdma;
995
996 airoha_qdma_wr(qdma, REG_TX_IRQ_BASE(id), dma_addr);
997 airoha_qdma_rmw(qdma, REG_TX_IRQ_CFG(id), TX_IRQ_DEPTH_MASK,
998 FIELD_PREP(TX_IRQ_DEPTH_MASK, size));
999 airoha_qdma_rmw(qdma, REG_TX_IRQ_CFG(id), TX_IRQ_THR_MASK,
1000 FIELD_PREP(TX_IRQ_THR_MASK, 1));
1001
1002 return 0;
1003 }
1004
airoha_qdma_init_tx(struct airoha_qdma * qdma)1005 static int airoha_qdma_init_tx(struct airoha_qdma *qdma)
1006 {
1007 int i, err;
1008
1009 for (i = 0; i < ARRAY_SIZE(qdma->q_tx_irq); i++) {
1010 err = airoha_qdma_tx_irq_init(&qdma->q_tx_irq[i], qdma,
1011 IRQ_QUEUE_LEN(i));
1012 if (err)
1013 return err;
1014 }
1015
1016 for (i = 0; i < ARRAY_SIZE(qdma->q_tx); i++) {
1017 err = airoha_qdma_init_tx_queue(&qdma->q_tx[i], qdma,
1018 TX_DSCP_NUM);
1019 if (err)
1020 return err;
1021 }
1022
1023 return 0;
1024 }
1025
airoha_qdma_cleanup_tx_queue(struct airoha_queue * q)1026 static void airoha_qdma_cleanup_tx_queue(struct airoha_queue *q)
1027 {
1028 struct airoha_eth *eth = q->qdma->eth;
1029 int i;
1030
1031 spin_lock_bh(&q->lock);
1032 for (i = 0; i < q->ndesc; i++) {
1033 struct airoha_queue_entry *e = &q->entry[i];
1034
1035 if (!e->dma_addr)
1036 continue;
1037
1038 dma_unmap_single(eth->dev, e->dma_addr, e->dma_len,
1039 DMA_TO_DEVICE);
1040 dev_kfree_skb_any(e->skb);
1041 e->dma_addr = 0;
1042 e->skb = NULL;
1043 list_add_tail(&e->list, &q->tx_list);
1044 q->queued--;
1045 }
1046 spin_unlock_bh(&q->lock);
1047 }
1048
airoha_qdma_init_hfwd_queues(struct airoha_qdma * qdma)1049 static int airoha_qdma_init_hfwd_queues(struct airoha_qdma *qdma)
1050 {
1051 int size, index, num_desc = HW_DSCP_NUM;
1052 struct airoha_eth *eth = qdma->eth;
1053 int id = qdma - ð->qdma[0];
1054 u32 status, buf_size;
1055 dma_addr_t dma_addr;
1056 const char *name;
1057
1058 name = devm_kasprintf(eth->dev, GFP_KERNEL, "qdma%d-buf", id);
1059 if (!name)
1060 return -ENOMEM;
1061
1062 buf_size = id ? AIROHA_MAX_PACKET_SIZE / 2 : AIROHA_MAX_PACKET_SIZE;
1063 index = of_property_match_string(eth->dev->of_node,
1064 "memory-region-names", name);
1065 if (index >= 0) {
1066 struct reserved_mem *rmem;
1067 struct device_node *np;
1068
1069 /* Consume reserved memory for hw forwarding buffers queue if
1070 * available in the DTS
1071 */
1072 np = of_parse_phandle(eth->dev->of_node, "memory-region",
1073 index);
1074 if (!np)
1075 return -ENODEV;
1076
1077 rmem = of_reserved_mem_lookup(np);
1078 of_node_put(np);
1079 dma_addr = rmem->base;
1080 /* Compute the number of hw descriptors according to the
1081 * reserved memory size and the payload buffer size
1082 */
1083 num_desc = div_u64(rmem->size, buf_size);
1084 } else {
1085 size = buf_size * num_desc;
1086 if (!dmam_alloc_coherent(eth->dev, size, &dma_addr,
1087 GFP_KERNEL))
1088 return -ENOMEM;
1089 }
1090
1091 airoha_qdma_wr(qdma, REG_FWD_BUF_BASE, dma_addr);
1092
1093 size = num_desc * sizeof(struct airoha_qdma_fwd_desc);
1094 if (!dmam_alloc_coherent(eth->dev, size, &dma_addr, GFP_KERNEL))
1095 return -ENOMEM;
1096
1097 airoha_qdma_wr(qdma, REG_FWD_DSCP_BASE, dma_addr);
1098 /* QDMA0: 2KB. QDMA1: 1KB */
1099 airoha_qdma_rmw(qdma, REG_HW_FWD_DSCP_CFG,
1100 HW_FWD_DSCP_PAYLOAD_SIZE_MASK,
1101 FIELD_PREP(HW_FWD_DSCP_PAYLOAD_SIZE_MASK, !!id));
1102 airoha_qdma_rmw(qdma, REG_FWD_DSCP_LOW_THR, FWD_DSCP_LOW_THR_MASK,
1103 FIELD_PREP(FWD_DSCP_LOW_THR_MASK, 128));
1104 airoha_qdma_rmw(qdma, REG_LMGR_INIT_CFG,
1105 LMGR_INIT_START | LMGR_SRAM_MODE_MASK |
1106 HW_FWD_DESC_NUM_MASK,
1107 FIELD_PREP(HW_FWD_DESC_NUM_MASK, num_desc) |
1108 LMGR_INIT_START | LMGR_SRAM_MODE_MASK);
1109
1110 return read_poll_timeout(airoha_qdma_rr, status,
1111 !(status & LMGR_INIT_START), USEC_PER_MSEC,
1112 30 * USEC_PER_MSEC, true, qdma,
1113 REG_LMGR_INIT_CFG);
1114 }
1115
airoha_qdma_init_qos(struct airoha_qdma * qdma)1116 static void airoha_qdma_init_qos(struct airoha_qdma *qdma)
1117 {
1118 airoha_qdma_clear(qdma, REG_TXWRR_MODE_CFG, TWRR_WEIGHT_SCALE_MASK);
1119 airoha_qdma_set(qdma, REG_TXWRR_MODE_CFG, TWRR_WEIGHT_BASE_MASK);
1120
1121 airoha_qdma_clear(qdma, REG_PSE_BUF_USAGE_CFG,
1122 PSE_BUF_ESTIMATE_EN_MASK);
1123
1124 airoha_qdma_set(qdma, REG_EGRESS_RATE_METER_CFG,
1125 EGRESS_RATE_METER_EN_MASK |
1126 EGRESS_RATE_METER_EQ_RATE_EN_MASK);
1127 /* 2047us x 31 = 63.457ms */
1128 airoha_qdma_rmw(qdma, REG_EGRESS_RATE_METER_CFG,
1129 EGRESS_RATE_METER_WINDOW_SZ_MASK,
1130 FIELD_PREP(EGRESS_RATE_METER_WINDOW_SZ_MASK, 0x1f));
1131 airoha_qdma_rmw(qdma, REG_EGRESS_RATE_METER_CFG,
1132 EGRESS_RATE_METER_TIMESLICE_MASK,
1133 FIELD_PREP(EGRESS_RATE_METER_TIMESLICE_MASK, 0x7ff));
1134
1135 /* ratelimit init */
1136 airoha_qdma_set(qdma, REG_GLB_TRTCM_CFG, GLB_TRTCM_EN_MASK);
1137 /* fast-tick 25us */
1138 airoha_qdma_rmw(qdma, REG_GLB_TRTCM_CFG, GLB_FAST_TICK_MASK,
1139 FIELD_PREP(GLB_FAST_TICK_MASK, 25));
1140 airoha_qdma_rmw(qdma, REG_GLB_TRTCM_CFG, GLB_SLOW_TICK_RATIO_MASK,
1141 FIELD_PREP(GLB_SLOW_TICK_RATIO_MASK, 40));
1142
1143 airoha_qdma_set(qdma, REG_EGRESS_TRTCM_CFG, EGRESS_TRTCM_EN_MASK);
1144 airoha_qdma_rmw(qdma, REG_EGRESS_TRTCM_CFG, EGRESS_FAST_TICK_MASK,
1145 FIELD_PREP(EGRESS_FAST_TICK_MASK, 25));
1146 airoha_qdma_rmw(qdma, REG_EGRESS_TRTCM_CFG,
1147 EGRESS_SLOW_TICK_RATIO_MASK,
1148 FIELD_PREP(EGRESS_SLOW_TICK_RATIO_MASK, 40));
1149
1150 airoha_qdma_set(qdma, REG_INGRESS_TRTCM_CFG, INGRESS_TRTCM_EN_MASK);
1151 airoha_qdma_clear(qdma, REG_INGRESS_TRTCM_CFG,
1152 INGRESS_TRTCM_MODE_MASK);
1153 airoha_qdma_rmw(qdma, REG_INGRESS_TRTCM_CFG, INGRESS_FAST_TICK_MASK,
1154 FIELD_PREP(INGRESS_FAST_TICK_MASK, 125));
1155 airoha_qdma_rmw(qdma, REG_INGRESS_TRTCM_CFG,
1156 INGRESS_SLOW_TICK_RATIO_MASK,
1157 FIELD_PREP(INGRESS_SLOW_TICK_RATIO_MASK, 8));
1158
1159 airoha_qdma_set(qdma, REG_SLA_TRTCM_CFG, SLA_TRTCM_EN_MASK);
1160 airoha_qdma_rmw(qdma, REG_SLA_TRTCM_CFG, SLA_FAST_TICK_MASK,
1161 FIELD_PREP(SLA_FAST_TICK_MASK, 25));
1162 airoha_qdma_rmw(qdma, REG_SLA_TRTCM_CFG, SLA_SLOW_TICK_RATIO_MASK,
1163 FIELD_PREP(SLA_SLOW_TICK_RATIO_MASK, 40));
1164 }
1165
airoha_qdma_init_qos_stats(struct airoha_qdma * qdma)1166 static void airoha_qdma_init_qos_stats(struct airoha_qdma *qdma)
1167 {
1168 int i;
1169
1170 for (i = 0; i < AIROHA_NUM_QOS_CHANNELS; i++) {
1171 /* Tx-cpu transferred count */
1172 airoha_qdma_wr(qdma, REG_CNTR_VAL(i << 1), 0);
1173 airoha_qdma_wr(qdma, REG_CNTR_CFG(i << 1),
1174 CNTR_EN_MASK | CNTR_ALL_QUEUE_EN_MASK |
1175 CNTR_ALL_DSCP_RING_EN_MASK |
1176 FIELD_PREP(CNTR_CHAN_MASK, i));
1177 /* Tx-fwd transferred count */
1178 airoha_qdma_wr(qdma, REG_CNTR_VAL((i << 1) + 1), 0);
1179 airoha_qdma_wr(qdma, REG_CNTR_CFG(i << 1),
1180 CNTR_EN_MASK | CNTR_ALL_QUEUE_EN_MASK |
1181 CNTR_ALL_DSCP_RING_EN_MASK |
1182 FIELD_PREP(CNTR_SRC_MASK, 1) |
1183 FIELD_PREP(CNTR_CHAN_MASK, i));
1184 }
1185 }
1186
airoha_qdma_hw_init(struct airoha_qdma * qdma)1187 static int airoha_qdma_hw_init(struct airoha_qdma *qdma)
1188 {
1189 int i;
1190
1191 for (i = 0; i < ARRAY_SIZE(qdma->irq_banks); i++) {
1192 /* clear pending irqs */
1193 airoha_qdma_wr(qdma, REG_INT_STATUS(i), 0xffffffff);
1194 /* setup rx irqs */
1195 airoha_qdma_irq_enable(&qdma->irq_banks[i], QDMA_INT_REG_IDX0,
1196 INT_RX0_MASK(RX_IRQ_BANK_PIN_MASK(i)));
1197 airoha_qdma_irq_enable(&qdma->irq_banks[i], QDMA_INT_REG_IDX1,
1198 INT_RX1_MASK(RX_IRQ_BANK_PIN_MASK(i)));
1199 airoha_qdma_irq_enable(&qdma->irq_banks[i], QDMA_INT_REG_IDX2,
1200 INT_RX2_MASK(RX_IRQ_BANK_PIN_MASK(i)));
1201 airoha_qdma_irq_enable(&qdma->irq_banks[i], QDMA_INT_REG_IDX3,
1202 INT_RX3_MASK(RX_IRQ_BANK_PIN_MASK(i)));
1203 }
1204 /* setup tx irqs */
1205 airoha_qdma_irq_enable(&qdma->irq_banks[0], QDMA_INT_REG_IDX0,
1206 TX_COHERENT_LOW_INT_MASK | INT_TX_MASK);
1207 airoha_qdma_irq_enable(&qdma->irq_banks[0], QDMA_INT_REG_IDX4,
1208 TX_COHERENT_HIGH_INT_MASK);
1209
1210 /* setup irq binding */
1211 for (i = 0; i < ARRAY_SIZE(qdma->q_tx); i++) {
1212 if (!qdma->q_tx[i].ndesc)
1213 continue;
1214
1215 if (TX_RING_IRQ_BLOCKING_MAP_MASK & BIT(i))
1216 airoha_qdma_set(qdma, REG_TX_RING_BLOCKING(i),
1217 TX_RING_IRQ_BLOCKING_CFG_MASK);
1218 else
1219 airoha_qdma_clear(qdma, REG_TX_RING_BLOCKING(i),
1220 TX_RING_IRQ_BLOCKING_CFG_MASK);
1221 }
1222
1223 airoha_qdma_wr(qdma, REG_QDMA_GLOBAL_CFG,
1224 FIELD_PREP(GLOBAL_CFG_DMA_PREFERENCE_MASK, 3) |
1225 GLOBAL_CFG_CPU_TXR_RR_MASK |
1226 GLOBAL_CFG_PAYLOAD_BYTE_SWAP_MASK |
1227 GLOBAL_CFG_MULTICAST_MODIFY_FP_MASK |
1228 GLOBAL_CFG_MULTICAST_EN_MASK |
1229 GLOBAL_CFG_IRQ0_EN_MASK | GLOBAL_CFG_IRQ1_EN_MASK |
1230 GLOBAL_CFG_TX_WB_DONE_MASK |
1231 FIELD_PREP(GLOBAL_CFG_MAX_ISSUE_NUM_MASK, 2));
1232
1233 airoha_qdma_init_qos(qdma);
1234
1235 /* disable qdma rx delay interrupt */
1236 for (i = 0; i < ARRAY_SIZE(qdma->q_rx); i++) {
1237 if (!qdma->q_rx[i].ndesc)
1238 continue;
1239
1240 airoha_qdma_clear(qdma, REG_RX_DELAY_INT_IDX(i),
1241 RX_DELAY_INT_MASK);
1242 }
1243
1244 airoha_qdma_set(qdma, REG_TXQ_CNGST_CFG,
1245 TXQ_CNGST_DROP_EN | TXQ_CNGST_DEI_DROP_EN);
1246 airoha_qdma_init_qos_stats(qdma);
1247
1248 return 0;
1249 }
1250
airoha_irq_handler(int irq,void * dev_instance)1251 static irqreturn_t airoha_irq_handler(int irq, void *dev_instance)
1252 {
1253 struct airoha_irq_bank *irq_bank = dev_instance;
1254 struct airoha_qdma *qdma = irq_bank->qdma;
1255 u32 rx_intr_mask = 0, rx_intr1, rx_intr2;
1256 u32 intr[ARRAY_SIZE(irq_bank->irqmask)];
1257 int i;
1258
1259 for (i = 0; i < ARRAY_SIZE(intr); i++) {
1260 intr[i] = airoha_qdma_rr(qdma, REG_INT_STATUS(i));
1261 intr[i] &= irq_bank->irqmask[i];
1262 airoha_qdma_wr(qdma, REG_INT_STATUS(i), intr[i]);
1263 }
1264
1265 if (!test_bit(DEV_STATE_INITIALIZED, &qdma->eth->state))
1266 return IRQ_NONE;
1267
1268 rx_intr1 = intr[1] & RX_DONE_LOW_INT_MASK;
1269 if (rx_intr1) {
1270 airoha_qdma_irq_disable(irq_bank, QDMA_INT_REG_IDX1, rx_intr1);
1271 rx_intr_mask |= rx_intr1;
1272 }
1273
1274 rx_intr2 = intr[2] & RX_DONE_HIGH_INT_MASK;
1275 if (rx_intr2) {
1276 airoha_qdma_irq_disable(irq_bank, QDMA_INT_REG_IDX2, rx_intr2);
1277 rx_intr_mask |= (rx_intr2 << 16);
1278 }
1279
1280 for (i = 0; rx_intr_mask && i < ARRAY_SIZE(qdma->q_rx); i++) {
1281 if (!qdma->q_rx[i].ndesc)
1282 continue;
1283
1284 if (rx_intr_mask & BIT(i))
1285 napi_schedule(&qdma->q_rx[i].napi);
1286 }
1287
1288 if (intr[0] & INT_TX_MASK) {
1289 for (i = 0; i < ARRAY_SIZE(qdma->q_tx_irq); i++) {
1290 if (!(intr[0] & TX_DONE_INT_MASK(i)))
1291 continue;
1292
1293 airoha_qdma_irq_disable(irq_bank, QDMA_INT_REG_IDX0,
1294 TX_DONE_INT_MASK(i));
1295 napi_schedule(&qdma->q_tx_irq[i].napi);
1296 }
1297 }
1298
1299 return IRQ_HANDLED;
1300 }
1301
airoha_qdma_init_irq_banks(struct platform_device * pdev,struct airoha_qdma * qdma)1302 static int airoha_qdma_init_irq_banks(struct platform_device *pdev,
1303 struct airoha_qdma *qdma)
1304 {
1305 struct airoha_eth *eth = qdma->eth;
1306 int i, id = qdma - ð->qdma[0];
1307
1308 for (i = 0; i < ARRAY_SIZE(qdma->irq_banks); i++) {
1309 struct airoha_irq_bank *irq_bank = &qdma->irq_banks[i];
1310 int err, irq_index = 4 * id + i;
1311 const char *name;
1312
1313 spin_lock_init(&irq_bank->irq_lock);
1314 irq_bank->qdma = qdma;
1315
1316 irq_bank->irq = platform_get_irq(pdev, irq_index);
1317 if (irq_bank->irq < 0)
1318 return irq_bank->irq;
1319
1320 name = devm_kasprintf(eth->dev, GFP_KERNEL,
1321 KBUILD_MODNAME ".%d", irq_index);
1322 if (!name)
1323 return -ENOMEM;
1324
1325 err = devm_request_irq(eth->dev, irq_bank->irq,
1326 airoha_irq_handler, IRQF_SHARED, name,
1327 irq_bank);
1328 if (err)
1329 return err;
1330 }
1331
1332 return 0;
1333 }
1334
airoha_qdma_init(struct platform_device * pdev,struct airoha_eth * eth,struct airoha_qdma * qdma)1335 static int airoha_qdma_init(struct platform_device *pdev,
1336 struct airoha_eth *eth,
1337 struct airoha_qdma *qdma)
1338 {
1339 int err, id = qdma - ð->qdma[0];
1340 const char *res;
1341
1342 qdma->eth = eth;
1343 res = devm_kasprintf(eth->dev, GFP_KERNEL, "qdma%d", id);
1344 if (!res)
1345 return -ENOMEM;
1346
1347 qdma->regs = devm_platform_ioremap_resource_byname(pdev, res);
1348 if (IS_ERR(qdma->regs))
1349 return dev_err_probe(eth->dev, PTR_ERR(qdma->regs),
1350 "failed to iomap qdma%d regs\n", id);
1351
1352 err = airoha_qdma_init_irq_banks(pdev, qdma);
1353 if (err)
1354 return err;
1355
1356 err = airoha_qdma_init_rx(qdma);
1357 if (err)
1358 return err;
1359
1360 err = airoha_qdma_init_tx(qdma);
1361 if (err)
1362 return err;
1363
1364 err = airoha_qdma_init_hfwd_queues(qdma);
1365 if (err)
1366 return err;
1367
1368 return airoha_qdma_hw_init(qdma);
1369 }
1370
airoha_hw_init(struct platform_device * pdev,struct airoha_eth * eth)1371 static int airoha_hw_init(struct platform_device *pdev,
1372 struct airoha_eth *eth)
1373 {
1374 int err, i;
1375
1376 /* disable xsi */
1377 err = reset_control_bulk_assert(eth->soc->num_xsi_rsts, eth->xsi_rsts);
1378 if (err)
1379 return err;
1380
1381 err = reset_control_bulk_assert(ARRAY_SIZE(eth->rsts), eth->rsts);
1382 if (err)
1383 return err;
1384
1385 msleep(20);
1386 err = reset_control_bulk_deassert(ARRAY_SIZE(eth->rsts), eth->rsts);
1387 if (err)
1388 return err;
1389
1390 msleep(20);
1391 err = airoha_fe_init(eth);
1392 if (err)
1393 return err;
1394
1395 for (i = 0; i < ARRAY_SIZE(eth->qdma); i++) {
1396 err = airoha_qdma_init(pdev, eth, ð->qdma[i]);
1397 if (err)
1398 return err;
1399 }
1400
1401 err = airoha_ppe_init(eth);
1402 if (err)
1403 return err;
1404
1405 set_bit(DEV_STATE_INITIALIZED, ð->state);
1406
1407 return 0;
1408 }
1409
airoha_hw_cleanup(struct airoha_qdma * qdma)1410 static void airoha_hw_cleanup(struct airoha_qdma *qdma)
1411 {
1412 int i;
1413
1414 for (i = 0; i < ARRAY_SIZE(qdma->q_rx); i++) {
1415 if (!qdma->q_rx[i].ndesc)
1416 continue;
1417
1418 netif_napi_del(&qdma->q_rx[i].napi);
1419 airoha_qdma_cleanup_rx_queue(&qdma->q_rx[i]);
1420 if (qdma->q_rx[i].page_pool)
1421 page_pool_destroy(qdma->q_rx[i].page_pool);
1422 }
1423
1424 for (i = 0; i < ARRAY_SIZE(qdma->q_tx_irq); i++)
1425 netif_napi_del(&qdma->q_tx_irq[i].napi);
1426
1427 for (i = 0; i < ARRAY_SIZE(qdma->q_tx); i++) {
1428 if (!qdma->q_tx[i].ndesc)
1429 continue;
1430
1431 airoha_qdma_cleanup_tx_queue(&qdma->q_tx[i]);
1432 }
1433 }
1434
airoha_qdma_start_napi(struct airoha_qdma * qdma)1435 static void airoha_qdma_start_napi(struct airoha_qdma *qdma)
1436 {
1437 int i;
1438
1439 for (i = 0; i < ARRAY_SIZE(qdma->q_tx_irq); i++)
1440 napi_enable(&qdma->q_tx_irq[i].napi);
1441
1442 for (i = 0; i < ARRAY_SIZE(qdma->q_rx); i++) {
1443 if (!qdma->q_rx[i].ndesc)
1444 continue;
1445
1446 napi_enable(&qdma->q_rx[i].napi);
1447 }
1448 }
1449
airoha_qdma_stop_napi(struct airoha_qdma * qdma)1450 static void airoha_qdma_stop_napi(struct airoha_qdma *qdma)
1451 {
1452 int i;
1453
1454 for (i = 0; i < ARRAY_SIZE(qdma->q_tx_irq); i++)
1455 napi_disable(&qdma->q_tx_irq[i].napi);
1456
1457 for (i = 0; i < ARRAY_SIZE(qdma->q_rx); i++) {
1458 if (!qdma->q_rx[i].ndesc)
1459 continue;
1460
1461 napi_disable(&qdma->q_rx[i].napi);
1462 }
1463 }
1464
airoha_update_hw_stats(struct airoha_gdm_port * port)1465 static void airoha_update_hw_stats(struct airoha_gdm_port *port)
1466 {
1467 struct airoha_eth *eth = port->qdma->eth;
1468 u32 val, i = 0;
1469
1470 spin_lock(&port->stats.lock);
1471 u64_stats_update_begin(&port->stats.syncp);
1472
1473 /* TX */
1474 val = airoha_fe_rr(eth, REG_FE_GDM_TX_OK_PKT_CNT_H(port->id));
1475 port->stats.tx_ok_pkts += ((u64)val << 32);
1476 val = airoha_fe_rr(eth, REG_FE_GDM_TX_OK_PKT_CNT_L(port->id));
1477 port->stats.tx_ok_pkts += val;
1478
1479 val = airoha_fe_rr(eth, REG_FE_GDM_TX_OK_BYTE_CNT_H(port->id));
1480 port->stats.tx_ok_bytes += ((u64)val << 32);
1481 val = airoha_fe_rr(eth, REG_FE_GDM_TX_OK_BYTE_CNT_L(port->id));
1482 port->stats.tx_ok_bytes += val;
1483
1484 val = airoha_fe_rr(eth, REG_FE_GDM_TX_ETH_DROP_CNT(port->id));
1485 port->stats.tx_drops += val;
1486
1487 val = airoha_fe_rr(eth, REG_FE_GDM_TX_ETH_BC_CNT(port->id));
1488 port->stats.tx_broadcast += val;
1489
1490 val = airoha_fe_rr(eth, REG_FE_GDM_TX_ETH_MC_CNT(port->id));
1491 port->stats.tx_multicast += val;
1492
1493 val = airoha_fe_rr(eth, REG_FE_GDM_TX_ETH_RUNT_CNT(port->id));
1494 port->stats.tx_len[i] += val;
1495
1496 val = airoha_fe_rr(eth, REG_FE_GDM_TX_ETH_E64_CNT_H(port->id));
1497 port->stats.tx_len[i] += ((u64)val << 32);
1498 val = airoha_fe_rr(eth, REG_FE_GDM_TX_ETH_E64_CNT_L(port->id));
1499 port->stats.tx_len[i++] += val;
1500
1501 val = airoha_fe_rr(eth, REG_FE_GDM_TX_ETH_L64_CNT_H(port->id));
1502 port->stats.tx_len[i] += ((u64)val << 32);
1503 val = airoha_fe_rr(eth, REG_FE_GDM_TX_ETH_L64_CNT_L(port->id));
1504 port->stats.tx_len[i++] += val;
1505
1506 val = airoha_fe_rr(eth, REG_FE_GDM_TX_ETH_L127_CNT_H(port->id));
1507 port->stats.tx_len[i] += ((u64)val << 32);
1508 val = airoha_fe_rr(eth, REG_FE_GDM_TX_ETH_L127_CNT_L(port->id));
1509 port->stats.tx_len[i++] += val;
1510
1511 val = airoha_fe_rr(eth, REG_FE_GDM_TX_ETH_L255_CNT_H(port->id));
1512 port->stats.tx_len[i] += ((u64)val << 32);
1513 val = airoha_fe_rr(eth, REG_FE_GDM_TX_ETH_L255_CNT_L(port->id));
1514 port->stats.tx_len[i++] += val;
1515
1516 val = airoha_fe_rr(eth, REG_FE_GDM_TX_ETH_L511_CNT_H(port->id));
1517 port->stats.tx_len[i] += ((u64)val << 32);
1518 val = airoha_fe_rr(eth, REG_FE_GDM_TX_ETH_L511_CNT_L(port->id));
1519 port->stats.tx_len[i++] += val;
1520
1521 val = airoha_fe_rr(eth, REG_FE_GDM_TX_ETH_L1023_CNT_H(port->id));
1522 port->stats.tx_len[i] += ((u64)val << 32);
1523 val = airoha_fe_rr(eth, REG_FE_GDM_TX_ETH_L1023_CNT_L(port->id));
1524 port->stats.tx_len[i++] += val;
1525
1526 val = airoha_fe_rr(eth, REG_FE_GDM_TX_ETH_LONG_CNT(port->id));
1527 port->stats.tx_len[i++] += val;
1528
1529 /* RX */
1530 val = airoha_fe_rr(eth, REG_FE_GDM_RX_OK_PKT_CNT_H(port->id));
1531 port->stats.rx_ok_pkts += ((u64)val << 32);
1532 val = airoha_fe_rr(eth, REG_FE_GDM_RX_OK_PKT_CNT_L(port->id));
1533 port->stats.rx_ok_pkts += val;
1534
1535 val = airoha_fe_rr(eth, REG_FE_GDM_RX_OK_BYTE_CNT_H(port->id));
1536 port->stats.rx_ok_bytes += ((u64)val << 32);
1537 val = airoha_fe_rr(eth, REG_FE_GDM_RX_OK_BYTE_CNT_L(port->id));
1538 port->stats.rx_ok_bytes += val;
1539
1540 val = airoha_fe_rr(eth, REG_FE_GDM_RX_ETH_DROP_CNT(port->id));
1541 port->stats.rx_drops += val;
1542
1543 val = airoha_fe_rr(eth, REG_FE_GDM_RX_ETH_BC_CNT(port->id));
1544 port->stats.rx_broadcast += val;
1545
1546 val = airoha_fe_rr(eth, REG_FE_GDM_RX_ETH_MC_CNT(port->id));
1547 port->stats.rx_multicast += val;
1548
1549 val = airoha_fe_rr(eth, REG_FE_GDM_RX_ERROR_DROP_CNT(port->id));
1550 port->stats.rx_errors += val;
1551
1552 val = airoha_fe_rr(eth, REG_FE_GDM_RX_ETH_CRC_ERR_CNT(port->id));
1553 port->stats.rx_crc_error += val;
1554
1555 val = airoha_fe_rr(eth, REG_FE_GDM_RX_OVERFLOW_DROP_CNT(port->id));
1556 port->stats.rx_over_errors += val;
1557
1558 val = airoha_fe_rr(eth, REG_FE_GDM_RX_ETH_FRAG_CNT(port->id));
1559 port->stats.rx_fragment += val;
1560
1561 val = airoha_fe_rr(eth, REG_FE_GDM_RX_ETH_JABBER_CNT(port->id));
1562 port->stats.rx_jabber += val;
1563
1564 i = 0;
1565 val = airoha_fe_rr(eth, REG_FE_GDM_RX_ETH_RUNT_CNT(port->id));
1566 port->stats.rx_len[i] += val;
1567
1568 val = airoha_fe_rr(eth, REG_FE_GDM_RX_ETH_E64_CNT_H(port->id));
1569 port->stats.rx_len[i] += ((u64)val << 32);
1570 val = airoha_fe_rr(eth, REG_FE_GDM_RX_ETH_E64_CNT_L(port->id));
1571 port->stats.rx_len[i++] += val;
1572
1573 val = airoha_fe_rr(eth, REG_FE_GDM_RX_ETH_L64_CNT_H(port->id));
1574 port->stats.rx_len[i] += ((u64)val << 32);
1575 val = airoha_fe_rr(eth, REG_FE_GDM_RX_ETH_L64_CNT_L(port->id));
1576 port->stats.rx_len[i++] += val;
1577
1578 val = airoha_fe_rr(eth, REG_FE_GDM_RX_ETH_L127_CNT_H(port->id));
1579 port->stats.rx_len[i] += ((u64)val << 32);
1580 val = airoha_fe_rr(eth, REG_FE_GDM_RX_ETH_L127_CNT_L(port->id));
1581 port->stats.rx_len[i++] += val;
1582
1583 val = airoha_fe_rr(eth, REG_FE_GDM_RX_ETH_L255_CNT_H(port->id));
1584 port->stats.rx_len[i] += ((u64)val << 32);
1585 val = airoha_fe_rr(eth, REG_FE_GDM_RX_ETH_L255_CNT_L(port->id));
1586 port->stats.rx_len[i++] += val;
1587
1588 val = airoha_fe_rr(eth, REG_FE_GDM_RX_ETH_L511_CNT_H(port->id));
1589 port->stats.rx_len[i] += ((u64)val << 32);
1590 val = airoha_fe_rr(eth, REG_FE_GDM_RX_ETH_L511_CNT_L(port->id));
1591 port->stats.rx_len[i++] += val;
1592
1593 val = airoha_fe_rr(eth, REG_FE_GDM_RX_ETH_L1023_CNT_H(port->id));
1594 port->stats.rx_len[i] += ((u64)val << 32);
1595 val = airoha_fe_rr(eth, REG_FE_GDM_RX_ETH_L1023_CNT_L(port->id));
1596 port->stats.rx_len[i++] += val;
1597
1598 val = airoha_fe_rr(eth, REG_FE_GDM_RX_ETH_LONG_CNT(port->id));
1599 port->stats.rx_len[i++] += val;
1600
1601 /* reset mib counters */
1602 airoha_fe_set(eth, REG_FE_GDM_MIB_CLEAR(port->id),
1603 FE_GDM_MIB_RX_CLEAR_MASK | FE_GDM_MIB_TX_CLEAR_MASK);
1604
1605 u64_stats_update_end(&port->stats.syncp);
1606 spin_unlock(&port->stats.lock);
1607 }
1608
airoha_dev_open(struct net_device * dev)1609 static int airoha_dev_open(struct net_device *dev)
1610 {
1611 int err, len = ETH_HLEN + dev->mtu + ETH_FCS_LEN;
1612 struct airoha_gdm_port *port = netdev_priv(dev);
1613 struct airoha_qdma *qdma = port->qdma;
1614
1615 netif_tx_start_all_queues(dev);
1616 err = airoha_set_vip_for_gdm_port(port, true);
1617 if (err)
1618 return err;
1619
1620 if (netdev_uses_dsa(dev))
1621 airoha_fe_set(qdma->eth, REG_GDM_INGRESS_CFG(port->id),
1622 GDM_STAG_EN_MASK);
1623 else
1624 airoha_fe_clear(qdma->eth, REG_GDM_INGRESS_CFG(port->id),
1625 GDM_STAG_EN_MASK);
1626
1627 airoha_fe_rmw(qdma->eth, REG_GDM_LEN_CFG(port->id),
1628 GDM_SHORT_LEN_MASK | GDM_LONG_LEN_MASK,
1629 FIELD_PREP(GDM_SHORT_LEN_MASK, 60) |
1630 FIELD_PREP(GDM_LONG_LEN_MASK, len));
1631
1632 airoha_qdma_set(qdma, REG_QDMA_GLOBAL_CFG,
1633 GLOBAL_CFG_TX_DMA_EN_MASK |
1634 GLOBAL_CFG_RX_DMA_EN_MASK);
1635 atomic_inc(&qdma->users);
1636
1637 return 0;
1638 }
1639
airoha_dev_stop(struct net_device * dev)1640 static int airoha_dev_stop(struct net_device *dev)
1641 {
1642 struct airoha_gdm_port *port = netdev_priv(dev);
1643 struct airoha_qdma *qdma = port->qdma;
1644 int i, err;
1645
1646 netif_tx_disable(dev);
1647 err = airoha_set_vip_for_gdm_port(port, false);
1648 if (err)
1649 return err;
1650
1651 for (i = 0; i < ARRAY_SIZE(qdma->q_tx); i++)
1652 netdev_tx_reset_subqueue(dev, i);
1653
1654 if (atomic_dec_and_test(&qdma->users)) {
1655 airoha_qdma_clear(qdma, REG_QDMA_GLOBAL_CFG,
1656 GLOBAL_CFG_TX_DMA_EN_MASK |
1657 GLOBAL_CFG_RX_DMA_EN_MASK);
1658
1659 for (i = 0; i < ARRAY_SIZE(qdma->q_tx); i++) {
1660 if (!qdma->q_tx[i].ndesc)
1661 continue;
1662
1663 airoha_qdma_cleanup_tx_queue(&qdma->q_tx[i]);
1664 }
1665 }
1666
1667 return 0;
1668 }
1669
airoha_dev_set_macaddr(struct net_device * dev,void * p)1670 static int airoha_dev_set_macaddr(struct net_device *dev, void *p)
1671 {
1672 struct airoha_gdm_port *port = netdev_priv(dev);
1673 int err;
1674
1675 err = eth_mac_addr(dev, p);
1676 if (err)
1677 return err;
1678
1679 airoha_set_macaddr(port, dev->dev_addr);
1680
1681 return 0;
1682 }
1683
airhoha_set_gdm2_loopback(struct airoha_gdm_port * port)1684 static int airhoha_set_gdm2_loopback(struct airoha_gdm_port *port)
1685 {
1686 struct airoha_eth *eth = port->qdma->eth;
1687 u32 val, pse_port, chan, nbq;
1688 int src_port;
1689
1690 /* Forward the traffic to the proper GDM port */
1691 pse_port = port->id == AIROHA_GDM3_IDX ? FE_PSE_PORT_GDM3
1692 : FE_PSE_PORT_GDM4;
1693 airoha_set_gdm_port_fwd_cfg(eth, REG_GDM_FWD_CFG(2), pse_port);
1694 airoha_fe_clear(eth, REG_GDM_FWD_CFG(2), GDM_STRIP_CRC_MASK);
1695
1696 /* Enable GDM2 loopback */
1697 airoha_fe_wr(eth, REG_GDM_TXCHN_EN(2), 0xffffffff);
1698 airoha_fe_wr(eth, REG_GDM_RXCHN_EN(2), 0xffff);
1699
1700 chan = port->id == AIROHA_GDM3_IDX ? airoha_is_7581(eth) ? 4 : 3 : 0;
1701 airoha_fe_rmw(eth, REG_GDM_LPBK_CFG(2),
1702 LPBK_CHAN_MASK | LPBK_MODE_MASK | LPBK_EN_MASK,
1703 FIELD_PREP(LPBK_CHAN_MASK, chan) |
1704 LBK_GAP_MODE_MASK | LBK_LEN_MODE_MASK |
1705 LBK_CHAN_MODE_MASK | LPBK_EN_MASK);
1706 airoha_fe_rmw(eth, REG_GDM_LEN_CFG(2),
1707 GDM_SHORT_LEN_MASK | GDM_LONG_LEN_MASK,
1708 FIELD_PREP(GDM_SHORT_LEN_MASK, 60) |
1709 FIELD_PREP(GDM_LONG_LEN_MASK, AIROHA_MAX_MTU));
1710
1711 /* Disable VIP and IFC for GDM2 */
1712 airoha_fe_clear(eth, REG_FE_VIP_PORT_EN, BIT(2));
1713 airoha_fe_clear(eth, REG_FE_IFC_PORT_EN, BIT(2));
1714
1715 /* XXX: handle XSI_USB_PORT and XSI_PCE1_PORT */
1716 nbq = port->id == AIROHA_GDM3_IDX && airoha_is_7581(eth) ? 4 : 0;
1717 src_port = eth->soc->ops.get_src_port_id(port, nbq);
1718 if (src_port < 0)
1719 return src_port;
1720
1721 airoha_fe_rmw(eth, REG_FE_WAN_PORT,
1722 WAN1_EN_MASK | WAN1_MASK | WAN0_MASK,
1723 FIELD_PREP(WAN0_MASK, src_port));
1724 val = src_port & SP_CPORT_DFT_MASK;
1725 airoha_fe_rmw(eth,
1726 REG_SP_DFT_CPORT(src_port >> fls(SP_CPORT_DFT_MASK)),
1727 SP_CPORT_MASK(val),
1728 FE_PSE_PORT_CDM2 << __ffs(SP_CPORT_MASK(val)));
1729
1730 if (port->id != AIROHA_GDM3_IDX && airoha_is_7581(eth))
1731 airoha_fe_rmw(eth, REG_SRC_PORT_FC_MAP6,
1732 FC_ID_OF_SRC_PORT24_MASK,
1733 FIELD_PREP(FC_ID_OF_SRC_PORT24_MASK, 2));
1734
1735 return 0;
1736 }
1737
airoha_dev_init(struct net_device * dev)1738 static int airoha_dev_init(struct net_device *dev)
1739 {
1740 struct airoha_gdm_port *port = netdev_priv(dev);
1741 struct airoha_qdma *qdma = port->qdma;
1742 struct airoha_eth *eth = qdma->eth;
1743 u32 pse_port, fe_cpu_port;
1744 u8 ppe_id;
1745
1746 airoha_set_macaddr(port, dev->dev_addr);
1747
1748 switch (port->id) {
1749 case 3:
1750 case 4:
1751 /* If GDM2 is active we can't enable loopback */
1752 if (!eth->ports[1]) {
1753 int err;
1754
1755 err = airhoha_set_gdm2_loopback(port);
1756 if (err)
1757 return err;
1758 }
1759 fallthrough;
1760 case 2:
1761 if (airoha_ppe_is_enabled(eth, 1)) {
1762 /* For PPE2 always use secondary cpu port. */
1763 fe_cpu_port = FE_PSE_PORT_CDM2;
1764 pse_port = FE_PSE_PORT_PPE2;
1765 break;
1766 }
1767 fallthrough;
1768 default: {
1769 u8 qdma_id = qdma - ð->qdma[0];
1770
1771 /* For PPE1 select cpu port according to the running QDMA. */
1772 fe_cpu_port = qdma_id ? FE_PSE_PORT_CDM2 : FE_PSE_PORT_CDM1;
1773 pse_port = FE_PSE_PORT_PPE1;
1774 break;
1775 }
1776 }
1777
1778 airoha_set_gdm_port_fwd_cfg(eth, REG_GDM_FWD_CFG(port->id), pse_port);
1779 ppe_id = pse_port == FE_PSE_PORT_PPE2 ? 1 : 0;
1780 airoha_fe_rmw(eth, REG_PPE_DFT_CPORT0(ppe_id),
1781 DFT_CPORT_MASK(port->id),
1782 fe_cpu_port << __ffs(DFT_CPORT_MASK(port->id)));
1783
1784 return 0;
1785 }
1786
airoha_dev_get_stats64(struct net_device * dev,struct rtnl_link_stats64 * storage)1787 static void airoha_dev_get_stats64(struct net_device *dev,
1788 struct rtnl_link_stats64 *storage)
1789 {
1790 struct airoha_gdm_port *port = netdev_priv(dev);
1791 unsigned int start;
1792
1793 airoha_update_hw_stats(port);
1794 do {
1795 start = u64_stats_fetch_begin(&port->stats.syncp);
1796 storage->rx_packets = port->stats.rx_ok_pkts;
1797 storage->tx_packets = port->stats.tx_ok_pkts;
1798 storage->rx_bytes = port->stats.rx_ok_bytes;
1799 storage->tx_bytes = port->stats.tx_ok_bytes;
1800 storage->multicast = port->stats.rx_multicast;
1801 storage->rx_errors = port->stats.rx_errors;
1802 storage->rx_dropped = port->stats.rx_drops;
1803 storage->tx_dropped = port->stats.tx_drops;
1804 storage->rx_crc_errors = port->stats.rx_crc_error;
1805 storage->rx_over_errors = port->stats.rx_over_errors;
1806 } while (u64_stats_fetch_retry(&port->stats.syncp, start));
1807 }
1808
airoha_dev_change_mtu(struct net_device * dev,int mtu)1809 static int airoha_dev_change_mtu(struct net_device *dev, int mtu)
1810 {
1811 struct airoha_gdm_port *port = netdev_priv(dev);
1812 struct airoha_eth *eth = port->qdma->eth;
1813 u32 len = ETH_HLEN + mtu + ETH_FCS_LEN;
1814
1815 airoha_fe_rmw(eth, REG_GDM_LEN_CFG(port->id),
1816 GDM_LONG_LEN_MASK,
1817 FIELD_PREP(GDM_LONG_LEN_MASK, len));
1818 WRITE_ONCE(dev->mtu, mtu);
1819
1820 return 0;
1821 }
1822
airoha_dev_select_queue(struct net_device * dev,struct sk_buff * skb,struct net_device * sb_dev)1823 static u16 airoha_dev_select_queue(struct net_device *dev, struct sk_buff *skb,
1824 struct net_device *sb_dev)
1825 {
1826 struct airoha_gdm_port *port = netdev_priv(dev);
1827 int queue, channel;
1828
1829 /* For dsa device select QoS channel according to the dsa user port
1830 * index, rely on port id otherwise. Select QoS queue based on the
1831 * skb priority.
1832 */
1833 channel = netdev_uses_dsa(dev) ? skb_get_queue_mapping(skb) : port->id;
1834 channel = channel % AIROHA_NUM_QOS_CHANNELS;
1835 queue = (skb->priority - 1) % AIROHA_NUM_QOS_QUEUES; /* QoS queue */
1836 queue = channel * AIROHA_NUM_QOS_QUEUES + queue;
1837
1838 return queue < dev->num_tx_queues ? queue : 0;
1839 }
1840
airoha_get_dsa_tag(struct sk_buff * skb,struct net_device * dev)1841 static u32 airoha_get_dsa_tag(struct sk_buff *skb, struct net_device *dev)
1842 {
1843 #if IS_ENABLED(CONFIG_NET_DSA)
1844 struct ethhdr *ehdr;
1845 u8 xmit_tpid;
1846 u16 tag;
1847
1848 if (!netdev_uses_dsa(dev))
1849 return 0;
1850
1851 if (dev->dsa_ptr->tag_ops->proto != DSA_TAG_PROTO_MTK)
1852 return 0;
1853
1854 if (skb_cow_head(skb, 0))
1855 return 0;
1856
1857 ehdr = (struct ethhdr *)skb->data;
1858 tag = be16_to_cpu(ehdr->h_proto);
1859 xmit_tpid = tag >> 8;
1860
1861 switch (xmit_tpid) {
1862 case MTK_HDR_XMIT_TAGGED_TPID_8100:
1863 ehdr->h_proto = cpu_to_be16(ETH_P_8021Q);
1864 tag &= ~(MTK_HDR_XMIT_TAGGED_TPID_8100 << 8);
1865 break;
1866 case MTK_HDR_XMIT_TAGGED_TPID_88A8:
1867 ehdr->h_proto = cpu_to_be16(ETH_P_8021AD);
1868 tag &= ~(MTK_HDR_XMIT_TAGGED_TPID_88A8 << 8);
1869 break;
1870 default:
1871 /* PPE module requires untagged DSA packets to work properly,
1872 * so move DSA tag to DMA descriptor.
1873 */
1874 memmove(skb->data + MTK_HDR_LEN, skb->data, 2 * ETH_ALEN);
1875 __skb_pull(skb, MTK_HDR_LEN);
1876 break;
1877 }
1878
1879 return tag;
1880 #else
1881 return 0;
1882 #endif
1883 }
1884
airoha_get_fe_port(struct airoha_gdm_port * port)1885 static int airoha_get_fe_port(struct airoha_gdm_port *port)
1886 {
1887 struct airoha_qdma *qdma = port->qdma;
1888 struct airoha_eth *eth = qdma->eth;
1889
1890 switch (eth->soc->version) {
1891 case 0x7583:
1892 return port->id == AIROHA_GDM3_IDX ? FE_PSE_PORT_GDM3
1893 : port->id;
1894 case 0x7581:
1895 default:
1896 return port->id == AIROHA_GDM4_IDX ? FE_PSE_PORT_GDM4
1897 : port->id;
1898 }
1899 }
1900
airoha_dev_xmit(struct sk_buff * skb,struct net_device * dev)1901 static netdev_tx_t airoha_dev_xmit(struct sk_buff *skb,
1902 struct net_device *dev)
1903 {
1904 struct airoha_gdm_port *port = netdev_priv(dev);
1905 struct airoha_qdma *qdma = port->qdma;
1906 u32 nr_frags, tag, msg0, msg1, len;
1907 struct airoha_queue_entry *e;
1908 struct netdev_queue *txq;
1909 struct airoha_queue *q;
1910 LIST_HEAD(tx_list);
1911 void *data;
1912 int i, qid;
1913 u16 index;
1914 u8 fport;
1915
1916 qid = skb_get_queue_mapping(skb) % ARRAY_SIZE(qdma->q_tx);
1917 tag = airoha_get_dsa_tag(skb, dev);
1918
1919 msg0 = FIELD_PREP(QDMA_ETH_TXMSG_CHAN_MASK,
1920 qid / AIROHA_NUM_QOS_QUEUES) |
1921 FIELD_PREP(QDMA_ETH_TXMSG_QUEUE_MASK,
1922 qid % AIROHA_NUM_QOS_QUEUES) |
1923 FIELD_PREP(QDMA_ETH_TXMSG_SP_TAG_MASK, tag);
1924 if (skb->ip_summed == CHECKSUM_PARTIAL)
1925 msg0 |= FIELD_PREP(QDMA_ETH_TXMSG_TCO_MASK, 1) |
1926 FIELD_PREP(QDMA_ETH_TXMSG_UCO_MASK, 1) |
1927 FIELD_PREP(QDMA_ETH_TXMSG_ICO_MASK, 1);
1928
1929 /* TSO: fill MSS info in tcp checksum field */
1930 if (skb_is_gso(skb)) {
1931 if (skb_cow_head(skb, 0))
1932 goto error;
1933
1934 if (skb_shinfo(skb)->gso_type & (SKB_GSO_TCPV4 |
1935 SKB_GSO_TCPV6)) {
1936 __be16 csum = cpu_to_be16(skb_shinfo(skb)->gso_size);
1937
1938 tcp_hdr(skb)->check = (__force __sum16)csum;
1939 msg0 |= FIELD_PREP(QDMA_ETH_TXMSG_TSO_MASK, 1);
1940 }
1941 }
1942
1943 fport = airoha_get_fe_port(port);
1944 msg1 = FIELD_PREP(QDMA_ETH_TXMSG_FPORT_MASK, fport) |
1945 FIELD_PREP(QDMA_ETH_TXMSG_METER_MASK, 0x7f);
1946
1947 q = &qdma->q_tx[qid];
1948 if (WARN_ON_ONCE(!q->ndesc))
1949 goto error;
1950
1951 spin_lock_bh(&q->lock);
1952
1953 txq = netdev_get_tx_queue(dev, qid);
1954 nr_frags = 1 + skb_shinfo(skb)->nr_frags;
1955
1956 if (q->queued + nr_frags >= q->ndesc) {
1957 /* not enough space in the queue */
1958 netif_tx_stop_queue(txq);
1959 spin_unlock_bh(&q->lock);
1960 return NETDEV_TX_BUSY;
1961 }
1962
1963 len = skb_headlen(skb);
1964 data = skb->data;
1965
1966 e = list_first_entry(&q->tx_list, struct airoha_queue_entry,
1967 list);
1968 index = e - q->entry;
1969
1970 for (i = 0; i < nr_frags; i++) {
1971 struct airoha_qdma_desc *desc = &q->desc[index];
1972 skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
1973 dma_addr_t addr;
1974 u32 val;
1975
1976 addr = dma_map_single(dev->dev.parent, data, len,
1977 DMA_TO_DEVICE);
1978 if (unlikely(dma_mapping_error(dev->dev.parent, addr)))
1979 goto error_unmap;
1980
1981 list_move_tail(&e->list, &tx_list);
1982 e->skb = i ? NULL : skb;
1983 e->dma_addr = addr;
1984 e->dma_len = len;
1985
1986 e = list_first_entry(&q->tx_list, struct airoha_queue_entry,
1987 list);
1988 index = e - q->entry;
1989
1990 val = FIELD_PREP(QDMA_DESC_LEN_MASK, len);
1991 if (i < nr_frags - 1)
1992 val |= FIELD_PREP(QDMA_DESC_MORE_MASK, 1);
1993 WRITE_ONCE(desc->ctrl, cpu_to_le32(val));
1994 WRITE_ONCE(desc->addr, cpu_to_le32(addr));
1995 val = FIELD_PREP(QDMA_DESC_NEXT_ID_MASK, index);
1996 WRITE_ONCE(desc->data, cpu_to_le32(val));
1997 WRITE_ONCE(desc->msg0, cpu_to_le32(msg0));
1998 WRITE_ONCE(desc->msg1, cpu_to_le32(msg1));
1999 WRITE_ONCE(desc->msg2, cpu_to_le32(0xffff));
2000
2001 data = skb_frag_address(frag);
2002 len = skb_frag_size(frag);
2003 }
2004 q->queued += i;
2005
2006 skb_tx_timestamp(skb);
2007 netdev_tx_sent_queue(txq, skb->len);
2008
2009 if (netif_xmit_stopped(txq) || !netdev_xmit_more())
2010 airoha_qdma_rmw(qdma, REG_TX_CPU_IDX(qid),
2011 TX_RING_CPU_IDX_MASK,
2012 FIELD_PREP(TX_RING_CPU_IDX_MASK, index));
2013
2014 if (q->ndesc - q->queued < q->free_thr)
2015 netif_tx_stop_queue(txq);
2016
2017 spin_unlock_bh(&q->lock);
2018
2019 return NETDEV_TX_OK;
2020
2021 error_unmap:
2022 while (!list_empty(&tx_list)) {
2023 e = list_first_entry(&tx_list, struct airoha_queue_entry,
2024 list);
2025 dma_unmap_single(dev->dev.parent, e->dma_addr, e->dma_len,
2026 DMA_TO_DEVICE);
2027 e->dma_addr = 0;
2028 list_move_tail(&e->list, &q->tx_list);
2029 }
2030
2031 spin_unlock_bh(&q->lock);
2032 error:
2033 dev_kfree_skb_any(skb);
2034 dev->stats.tx_dropped++;
2035
2036 return NETDEV_TX_OK;
2037 }
2038
airoha_ethtool_get_drvinfo(struct net_device * dev,struct ethtool_drvinfo * info)2039 static void airoha_ethtool_get_drvinfo(struct net_device *dev,
2040 struct ethtool_drvinfo *info)
2041 {
2042 struct airoha_gdm_port *port = netdev_priv(dev);
2043 struct airoha_eth *eth = port->qdma->eth;
2044
2045 strscpy(info->driver, eth->dev->driver->name, sizeof(info->driver));
2046 strscpy(info->bus_info, dev_name(eth->dev), sizeof(info->bus_info));
2047 }
2048
airoha_ethtool_get_mac_stats(struct net_device * dev,struct ethtool_eth_mac_stats * stats)2049 static void airoha_ethtool_get_mac_stats(struct net_device *dev,
2050 struct ethtool_eth_mac_stats *stats)
2051 {
2052 struct airoha_gdm_port *port = netdev_priv(dev);
2053 unsigned int start;
2054
2055 airoha_update_hw_stats(port);
2056 do {
2057 start = u64_stats_fetch_begin(&port->stats.syncp);
2058 stats->FramesTransmittedOK = port->stats.tx_ok_pkts;
2059 stats->OctetsTransmittedOK = port->stats.tx_ok_bytes;
2060 stats->MulticastFramesXmittedOK = port->stats.tx_multicast;
2061 stats->BroadcastFramesXmittedOK = port->stats.tx_broadcast;
2062 stats->FramesReceivedOK = port->stats.rx_ok_pkts;
2063 stats->OctetsReceivedOK = port->stats.rx_ok_bytes;
2064 stats->BroadcastFramesReceivedOK = port->stats.rx_broadcast;
2065 } while (u64_stats_fetch_retry(&port->stats.syncp, start));
2066 }
2067
2068 static const struct ethtool_rmon_hist_range airoha_ethtool_rmon_ranges[] = {
2069 { 0, 64 },
2070 { 65, 127 },
2071 { 128, 255 },
2072 { 256, 511 },
2073 { 512, 1023 },
2074 { 1024, 1518 },
2075 { 1519, 10239 },
2076 {},
2077 };
2078
2079 static void
airoha_ethtool_get_rmon_stats(struct net_device * dev,struct ethtool_rmon_stats * stats,const struct ethtool_rmon_hist_range ** ranges)2080 airoha_ethtool_get_rmon_stats(struct net_device *dev,
2081 struct ethtool_rmon_stats *stats,
2082 const struct ethtool_rmon_hist_range **ranges)
2083 {
2084 struct airoha_gdm_port *port = netdev_priv(dev);
2085 struct airoha_hw_stats *hw_stats = &port->stats;
2086 unsigned int start;
2087
2088 BUILD_BUG_ON(ARRAY_SIZE(airoha_ethtool_rmon_ranges) !=
2089 ARRAY_SIZE(hw_stats->tx_len) + 1);
2090 BUILD_BUG_ON(ARRAY_SIZE(airoha_ethtool_rmon_ranges) !=
2091 ARRAY_SIZE(hw_stats->rx_len) + 1);
2092
2093 *ranges = airoha_ethtool_rmon_ranges;
2094 airoha_update_hw_stats(port);
2095 do {
2096 int i;
2097
2098 start = u64_stats_fetch_begin(&port->stats.syncp);
2099 stats->fragments = hw_stats->rx_fragment;
2100 stats->jabbers = hw_stats->rx_jabber;
2101 for (i = 0; i < ARRAY_SIZE(airoha_ethtool_rmon_ranges) - 1;
2102 i++) {
2103 stats->hist[i] = hw_stats->rx_len[i];
2104 stats->hist_tx[i] = hw_stats->tx_len[i];
2105 }
2106 } while (u64_stats_fetch_retry(&port->stats.syncp, start));
2107 }
2108
airoha_qdma_set_chan_tx_sched(struct airoha_gdm_port * port,int channel,enum tx_sched_mode mode,const u16 * weights,u8 n_weights)2109 static int airoha_qdma_set_chan_tx_sched(struct airoha_gdm_port *port,
2110 int channel, enum tx_sched_mode mode,
2111 const u16 *weights, u8 n_weights)
2112 {
2113 int i;
2114
2115 for (i = 0; i < AIROHA_NUM_TX_RING; i++)
2116 airoha_qdma_clear(port->qdma, REG_QUEUE_CLOSE_CFG(channel),
2117 TXQ_DISABLE_CHAN_QUEUE_MASK(channel, i));
2118
2119 for (i = 0; i < n_weights; i++) {
2120 u32 status;
2121 int err;
2122
2123 airoha_qdma_wr(port->qdma, REG_TXWRR_WEIGHT_CFG,
2124 TWRR_RW_CMD_MASK |
2125 FIELD_PREP(TWRR_CHAN_IDX_MASK, channel) |
2126 FIELD_PREP(TWRR_QUEUE_IDX_MASK, i) |
2127 FIELD_PREP(TWRR_VALUE_MASK, weights[i]));
2128 err = read_poll_timeout(airoha_qdma_rr, status,
2129 status & TWRR_RW_CMD_DONE,
2130 USEC_PER_MSEC, 10 * USEC_PER_MSEC,
2131 true, port->qdma,
2132 REG_TXWRR_WEIGHT_CFG);
2133 if (err)
2134 return err;
2135 }
2136
2137 airoha_qdma_rmw(port->qdma, REG_CHAN_QOS_MODE(channel >> 3),
2138 CHAN_QOS_MODE_MASK(channel),
2139 mode << __ffs(CHAN_QOS_MODE_MASK(channel)));
2140
2141 return 0;
2142 }
2143
airoha_qdma_set_tx_prio_sched(struct airoha_gdm_port * port,int channel)2144 static int airoha_qdma_set_tx_prio_sched(struct airoha_gdm_port *port,
2145 int channel)
2146 {
2147 static const u16 w[AIROHA_NUM_QOS_QUEUES] = {};
2148
2149 return airoha_qdma_set_chan_tx_sched(port, channel, TC_SCH_SP, w,
2150 ARRAY_SIZE(w));
2151 }
2152
airoha_qdma_set_tx_ets_sched(struct airoha_gdm_port * port,int channel,struct tc_ets_qopt_offload * opt)2153 static int airoha_qdma_set_tx_ets_sched(struct airoha_gdm_port *port,
2154 int channel,
2155 struct tc_ets_qopt_offload *opt)
2156 {
2157 struct tc_ets_qopt_offload_replace_params *p = &opt->replace_params;
2158 enum tx_sched_mode mode = TC_SCH_SP;
2159 u16 w[AIROHA_NUM_QOS_QUEUES] = {};
2160 int i, nstrict = 0;
2161
2162 if (p->bands > AIROHA_NUM_QOS_QUEUES)
2163 return -EINVAL;
2164
2165 for (i = 0; i < p->bands; i++) {
2166 if (!p->quanta[i])
2167 nstrict++;
2168 }
2169
2170 /* this configuration is not supported by the hw */
2171 if (nstrict == AIROHA_NUM_QOS_QUEUES - 1)
2172 return -EINVAL;
2173
2174 /* EN7581 SoC supports fixed QoS band priority where WRR queues have
2175 * lowest priorities with respect to SP ones.
2176 * e.g: WRR0, WRR1, .., WRRm, SP0, SP1, .., SPn
2177 */
2178 for (i = 0; i < nstrict; i++) {
2179 if (p->priomap[p->bands - i - 1] != i)
2180 return -EINVAL;
2181 }
2182
2183 for (i = 0; i < p->bands - nstrict; i++) {
2184 if (p->priomap[i] != nstrict + i)
2185 return -EINVAL;
2186
2187 w[i] = p->weights[nstrict + i];
2188 }
2189
2190 if (!nstrict)
2191 mode = TC_SCH_WRR8;
2192 else if (nstrict < AIROHA_NUM_QOS_QUEUES - 1)
2193 mode = nstrict + 1;
2194
2195 return airoha_qdma_set_chan_tx_sched(port, channel, mode, w,
2196 ARRAY_SIZE(w));
2197 }
2198
airoha_qdma_get_tx_ets_stats(struct airoha_gdm_port * port,int channel,struct tc_ets_qopt_offload * opt)2199 static int airoha_qdma_get_tx_ets_stats(struct airoha_gdm_port *port,
2200 int channel,
2201 struct tc_ets_qopt_offload *opt)
2202 {
2203 u64 cpu_tx_packets = airoha_qdma_rr(port->qdma,
2204 REG_CNTR_VAL(channel << 1));
2205 u64 fwd_tx_packets = airoha_qdma_rr(port->qdma,
2206 REG_CNTR_VAL((channel << 1) + 1));
2207 u64 tx_packets = (cpu_tx_packets - port->cpu_tx_packets) +
2208 (fwd_tx_packets - port->fwd_tx_packets);
2209 _bstats_update(opt->stats.bstats, 0, tx_packets);
2210
2211 port->cpu_tx_packets = cpu_tx_packets;
2212 port->fwd_tx_packets = fwd_tx_packets;
2213
2214 return 0;
2215 }
2216
airoha_tc_setup_qdisc_ets(struct airoha_gdm_port * port,struct tc_ets_qopt_offload * opt)2217 static int airoha_tc_setup_qdisc_ets(struct airoha_gdm_port *port,
2218 struct tc_ets_qopt_offload *opt)
2219 {
2220 int channel;
2221
2222 if (opt->parent == TC_H_ROOT)
2223 return -EINVAL;
2224
2225 channel = TC_H_MAJ(opt->handle) >> 16;
2226 channel = channel % AIROHA_NUM_QOS_CHANNELS;
2227
2228 switch (opt->command) {
2229 case TC_ETS_REPLACE:
2230 return airoha_qdma_set_tx_ets_sched(port, channel, opt);
2231 case TC_ETS_DESTROY:
2232 /* PRIO is default qdisc scheduler */
2233 return airoha_qdma_set_tx_prio_sched(port, channel);
2234 case TC_ETS_STATS:
2235 return airoha_qdma_get_tx_ets_stats(port, channel, opt);
2236 default:
2237 return -EOPNOTSUPP;
2238 }
2239 }
2240
airoha_qdma_get_rl_param(struct airoha_qdma * qdma,int queue_id,u32 addr,enum trtcm_param_type param,u32 * val_low,u32 * val_high)2241 static int airoha_qdma_get_rl_param(struct airoha_qdma *qdma, int queue_id,
2242 u32 addr, enum trtcm_param_type param,
2243 u32 *val_low, u32 *val_high)
2244 {
2245 u32 idx = QDMA_METER_IDX(queue_id), group = QDMA_METER_GROUP(queue_id);
2246 u32 val, config = FIELD_PREP(RATE_LIMIT_PARAM_TYPE_MASK, param) |
2247 FIELD_PREP(RATE_LIMIT_METER_GROUP_MASK, group) |
2248 FIELD_PREP(RATE_LIMIT_PARAM_INDEX_MASK, idx);
2249
2250 airoha_qdma_wr(qdma, REG_TRTCM_CFG_PARAM(addr), config);
2251 if (read_poll_timeout(airoha_qdma_rr, val,
2252 val & RATE_LIMIT_PARAM_RW_DONE_MASK,
2253 USEC_PER_MSEC, 10 * USEC_PER_MSEC, true, qdma,
2254 REG_TRTCM_CFG_PARAM(addr)))
2255 return -ETIMEDOUT;
2256
2257 *val_low = airoha_qdma_rr(qdma, REG_TRTCM_DATA_LOW(addr));
2258 if (val_high)
2259 *val_high = airoha_qdma_rr(qdma, REG_TRTCM_DATA_HIGH(addr));
2260
2261 return 0;
2262 }
2263
airoha_qdma_set_rl_param(struct airoha_qdma * qdma,int queue_id,u32 addr,enum trtcm_param_type param,u32 val)2264 static int airoha_qdma_set_rl_param(struct airoha_qdma *qdma, int queue_id,
2265 u32 addr, enum trtcm_param_type param,
2266 u32 val)
2267 {
2268 u32 idx = QDMA_METER_IDX(queue_id), group = QDMA_METER_GROUP(queue_id);
2269 u32 config = RATE_LIMIT_PARAM_RW_MASK |
2270 FIELD_PREP(RATE_LIMIT_PARAM_TYPE_MASK, param) |
2271 FIELD_PREP(RATE_LIMIT_METER_GROUP_MASK, group) |
2272 FIELD_PREP(RATE_LIMIT_PARAM_INDEX_MASK, idx);
2273
2274 airoha_qdma_wr(qdma, REG_TRTCM_DATA_LOW(addr), val);
2275 airoha_qdma_wr(qdma, REG_TRTCM_CFG_PARAM(addr), config);
2276
2277 return read_poll_timeout(airoha_qdma_rr, val,
2278 val & RATE_LIMIT_PARAM_RW_DONE_MASK,
2279 USEC_PER_MSEC, 10 * USEC_PER_MSEC, true,
2280 qdma, REG_TRTCM_CFG_PARAM(addr));
2281 }
2282
airoha_qdma_set_rl_config(struct airoha_qdma * qdma,int queue_id,u32 addr,bool enable,u32 enable_mask)2283 static int airoha_qdma_set_rl_config(struct airoha_qdma *qdma, int queue_id,
2284 u32 addr, bool enable, u32 enable_mask)
2285 {
2286 u32 val;
2287 int err;
2288
2289 err = airoha_qdma_get_rl_param(qdma, queue_id, addr, TRTCM_MISC_MODE,
2290 &val, NULL);
2291 if (err)
2292 return err;
2293
2294 val = enable ? val | enable_mask : val & ~enable_mask;
2295
2296 return airoha_qdma_set_rl_param(qdma, queue_id, addr, TRTCM_MISC_MODE,
2297 val);
2298 }
2299
airoha_qdma_set_rl_token_bucket(struct airoha_qdma * qdma,int queue_id,u32 rate_val,u32 bucket_size)2300 static int airoha_qdma_set_rl_token_bucket(struct airoha_qdma *qdma,
2301 int queue_id, u32 rate_val,
2302 u32 bucket_size)
2303 {
2304 u32 val, config, tick, unit, rate, rate_frac;
2305 int err;
2306
2307 err = airoha_qdma_get_rl_param(qdma, queue_id, REG_INGRESS_TRTCM_CFG,
2308 TRTCM_MISC_MODE, &config, NULL);
2309 if (err)
2310 return err;
2311
2312 val = airoha_qdma_rr(qdma, REG_INGRESS_TRTCM_CFG);
2313 tick = FIELD_GET(INGRESS_FAST_TICK_MASK, val);
2314 if (config & TRTCM_TICK_SEL)
2315 tick *= FIELD_GET(INGRESS_SLOW_TICK_RATIO_MASK, val);
2316 if (!tick)
2317 return -EINVAL;
2318
2319 unit = (config & TRTCM_PKT_MODE) ? 1000000 / tick : 8000 / tick;
2320 if (!unit)
2321 return -EINVAL;
2322
2323 rate = rate_val / unit;
2324 rate_frac = rate_val % unit;
2325 rate_frac = FIELD_PREP(TRTCM_TOKEN_RATE_MASK, rate_frac) / unit;
2326 rate = FIELD_PREP(TRTCM_TOKEN_RATE_MASK, rate) |
2327 FIELD_PREP(TRTCM_TOKEN_RATE_FRACTION_MASK, rate_frac);
2328
2329 err = airoha_qdma_set_rl_param(qdma, queue_id, REG_INGRESS_TRTCM_CFG,
2330 TRTCM_TOKEN_RATE_MODE, rate);
2331 if (err)
2332 return err;
2333
2334 val = bucket_size;
2335 if (!(config & TRTCM_PKT_MODE))
2336 val = max_t(u32, val, MIN_TOKEN_SIZE);
2337 val = min_t(u32, __fls(val), MAX_TOKEN_SIZE_OFFSET);
2338
2339 return airoha_qdma_set_rl_param(qdma, queue_id, REG_INGRESS_TRTCM_CFG,
2340 TRTCM_BUCKETSIZE_SHIFT_MODE, val);
2341 }
2342
airoha_qdma_init_rl_config(struct airoha_qdma * qdma,int queue_id,bool enable,enum trtcm_unit_type unit)2343 static int airoha_qdma_init_rl_config(struct airoha_qdma *qdma, int queue_id,
2344 bool enable, enum trtcm_unit_type unit)
2345 {
2346 bool tick_sel = queue_id == 0 || queue_id == 2 || queue_id == 8;
2347 enum trtcm_param mode = TRTCM_METER_MODE;
2348 int err;
2349
2350 mode |= unit == TRTCM_PACKET_UNIT ? TRTCM_PKT_MODE : 0;
2351 err = airoha_qdma_set_rl_config(qdma, queue_id, REG_INGRESS_TRTCM_CFG,
2352 enable, mode);
2353 if (err)
2354 return err;
2355
2356 return airoha_qdma_set_rl_config(qdma, queue_id, REG_INGRESS_TRTCM_CFG,
2357 tick_sel, TRTCM_TICK_SEL);
2358 }
2359
airoha_qdma_get_trtcm_param(struct airoha_qdma * qdma,int channel,u32 addr,enum trtcm_param_type param,enum trtcm_mode_type mode,u32 * val_low,u32 * val_high)2360 static int airoha_qdma_get_trtcm_param(struct airoha_qdma *qdma, int channel,
2361 u32 addr, enum trtcm_param_type param,
2362 enum trtcm_mode_type mode,
2363 u32 *val_low, u32 *val_high)
2364 {
2365 u32 idx = QDMA_METER_IDX(channel), group = QDMA_METER_GROUP(channel);
2366 u32 val, config = FIELD_PREP(TRTCM_PARAM_TYPE_MASK, param) |
2367 FIELD_PREP(TRTCM_METER_GROUP_MASK, group) |
2368 FIELD_PREP(TRTCM_PARAM_INDEX_MASK, idx) |
2369 FIELD_PREP(TRTCM_PARAM_RATE_TYPE_MASK, mode);
2370
2371 airoha_qdma_wr(qdma, REG_TRTCM_CFG_PARAM(addr), config);
2372 if (read_poll_timeout(airoha_qdma_rr, val,
2373 val & TRTCM_PARAM_RW_DONE_MASK,
2374 USEC_PER_MSEC, 10 * USEC_PER_MSEC, true,
2375 qdma, REG_TRTCM_CFG_PARAM(addr)))
2376 return -ETIMEDOUT;
2377
2378 *val_low = airoha_qdma_rr(qdma, REG_TRTCM_DATA_LOW(addr));
2379 if (val_high)
2380 *val_high = airoha_qdma_rr(qdma, REG_TRTCM_DATA_HIGH(addr));
2381
2382 return 0;
2383 }
2384
airoha_qdma_set_trtcm_param(struct airoha_qdma * qdma,int channel,u32 addr,enum trtcm_param_type param,enum trtcm_mode_type mode,u32 val)2385 static int airoha_qdma_set_trtcm_param(struct airoha_qdma *qdma, int channel,
2386 u32 addr, enum trtcm_param_type param,
2387 enum trtcm_mode_type mode, u32 val)
2388 {
2389 u32 idx = QDMA_METER_IDX(channel), group = QDMA_METER_GROUP(channel);
2390 u32 config = TRTCM_PARAM_RW_MASK |
2391 FIELD_PREP(TRTCM_PARAM_TYPE_MASK, param) |
2392 FIELD_PREP(TRTCM_METER_GROUP_MASK, group) |
2393 FIELD_PREP(TRTCM_PARAM_INDEX_MASK, idx) |
2394 FIELD_PREP(TRTCM_PARAM_RATE_TYPE_MASK, mode);
2395
2396 airoha_qdma_wr(qdma, REG_TRTCM_DATA_LOW(addr), val);
2397 airoha_qdma_wr(qdma, REG_TRTCM_CFG_PARAM(addr), config);
2398
2399 return read_poll_timeout(airoha_qdma_rr, val,
2400 val & TRTCM_PARAM_RW_DONE_MASK,
2401 USEC_PER_MSEC, 10 * USEC_PER_MSEC, true,
2402 qdma, REG_TRTCM_CFG_PARAM(addr));
2403 }
2404
airoha_qdma_set_trtcm_config(struct airoha_qdma * qdma,int channel,u32 addr,enum trtcm_mode_type mode,bool enable,u32 enable_mask)2405 static int airoha_qdma_set_trtcm_config(struct airoha_qdma *qdma, int channel,
2406 u32 addr, enum trtcm_mode_type mode,
2407 bool enable, u32 enable_mask)
2408 {
2409 u32 val;
2410
2411 if (airoha_qdma_get_trtcm_param(qdma, channel, addr, TRTCM_MISC_MODE,
2412 mode, &val, NULL))
2413 return -EINVAL;
2414
2415 val = enable ? val | enable_mask : val & ~enable_mask;
2416
2417 return airoha_qdma_set_trtcm_param(qdma, channel, addr, TRTCM_MISC_MODE,
2418 mode, val);
2419 }
2420
airoha_qdma_set_trtcm_token_bucket(struct airoha_qdma * qdma,int channel,u32 addr,enum trtcm_mode_type mode,u32 rate_val,u32 bucket_size)2421 static int airoha_qdma_set_trtcm_token_bucket(struct airoha_qdma *qdma,
2422 int channel, u32 addr,
2423 enum trtcm_mode_type mode,
2424 u32 rate_val, u32 bucket_size)
2425 {
2426 u32 val, config, tick, unit, rate, rate_frac;
2427 int err;
2428
2429 if (airoha_qdma_get_trtcm_param(qdma, channel, addr, TRTCM_MISC_MODE,
2430 mode, &config, NULL))
2431 return -EINVAL;
2432
2433 val = airoha_qdma_rr(qdma, addr);
2434 tick = FIELD_GET(INGRESS_FAST_TICK_MASK, val);
2435 if (config & TRTCM_TICK_SEL)
2436 tick *= FIELD_GET(INGRESS_SLOW_TICK_RATIO_MASK, val);
2437 if (!tick)
2438 return -EINVAL;
2439
2440 unit = (config & TRTCM_PKT_MODE) ? 1000000 / tick : 8000 / tick;
2441 if (!unit)
2442 return -EINVAL;
2443
2444 rate = rate_val / unit;
2445 rate_frac = rate_val % unit;
2446 rate_frac = FIELD_PREP(TRTCM_TOKEN_RATE_MASK, rate_frac) / unit;
2447 rate = FIELD_PREP(TRTCM_TOKEN_RATE_MASK, rate) |
2448 FIELD_PREP(TRTCM_TOKEN_RATE_FRACTION_MASK, rate_frac);
2449
2450 err = airoha_qdma_set_trtcm_param(qdma, channel, addr,
2451 TRTCM_TOKEN_RATE_MODE, mode, rate);
2452 if (err)
2453 return err;
2454
2455 val = max_t(u32, bucket_size, MIN_TOKEN_SIZE);
2456 val = min_t(u32, __fls(val), MAX_TOKEN_SIZE_OFFSET);
2457
2458 return airoha_qdma_set_trtcm_param(qdma, channel, addr,
2459 TRTCM_BUCKETSIZE_SHIFT_MODE,
2460 mode, val);
2461 }
2462
airoha_qdma_set_tx_rate_limit(struct airoha_gdm_port * port,int channel,u32 rate,u32 bucket_size)2463 static int airoha_qdma_set_tx_rate_limit(struct airoha_gdm_port *port,
2464 int channel, u32 rate,
2465 u32 bucket_size)
2466 {
2467 int i, err;
2468
2469 for (i = 0; i <= TRTCM_PEAK_MODE; i++) {
2470 err = airoha_qdma_set_trtcm_config(port->qdma, channel,
2471 REG_EGRESS_TRTCM_CFG, i,
2472 !!rate, TRTCM_METER_MODE);
2473 if (err)
2474 return err;
2475
2476 err = airoha_qdma_set_trtcm_token_bucket(port->qdma, channel,
2477 REG_EGRESS_TRTCM_CFG,
2478 i, rate, bucket_size);
2479 if (err)
2480 return err;
2481 }
2482
2483 return 0;
2484 }
2485
airoha_tc_htb_alloc_leaf_queue(struct airoha_gdm_port * port,struct tc_htb_qopt_offload * opt)2486 static int airoha_tc_htb_alloc_leaf_queue(struct airoha_gdm_port *port,
2487 struct tc_htb_qopt_offload *opt)
2488 {
2489 u32 channel = TC_H_MIN(opt->classid) % AIROHA_NUM_QOS_CHANNELS;
2490 u32 rate = div_u64(opt->rate, 1000) << 3; /* kbps */
2491 struct net_device *dev = port->dev;
2492 int num_tx_queues = dev->real_num_tx_queues;
2493 int err;
2494
2495 if (opt->parent_classid != TC_HTB_CLASSID_ROOT) {
2496 NL_SET_ERR_MSG_MOD(opt->extack, "invalid parent classid");
2497 return -EINVAL;
2498 }
2499
2500 err = airoha_qdma_set_tx_rate_limit(port, channel, rate, opt->quantum);
2501 if (err) {
2502 NL_SET_ERR_MSG_MOD(opt->extack,
2503 "failed configuring htb offload");
2504 return err;
2505 }
2506
2507 if (opt->command == TC_HTB_NODE_MODIFY)
2508 return 0;
2509
2510 err = netif_set_real_num_tx_queues(dev, num_tx_queues + 1);
2511 if (err) {
2512 airoha_qdma_set_tx_rate_limit(port, channel, 0, opt->quantum);
2513 NL_SET_ERR_MSG_MOD(opt->extack,
2514 "failed setting real_num_tx_queues");
2515 return err;
2516 }
2517
2518 set_bit(channel, port->qos_sq_bmap);
2519 opt->qid = AIROHA_NUM_TX_RING + channel;
2520
2521 return 0;
2522 }
2523
airoha_qdma_set_rx_meter(struct airoha_gdm_port * port,u32 rate,u32 bucket_size,enum trtcm_unit_type unit_type)2524 static int airoha_qdma_set_rx_meter(struct airoha_gdm_port *port,
2525 u32 rate, u32 bucket_size,
2526 enum trtcm_unit_type unit_type)
2527 {
2528 struct airoha_qdma *qdma = port->qdma;
2529 int i;
2530
2531 for (i = 0; i < ARRAY_SIZE(qdma->q_rx); i++) {
2532 int err;
2533
2534 if (!qdma->q_rx[i].ndesc)
2535 continue;
2536
2537 err = airoha_qdma_init_rl_config(qdma, i, !!rate, unit_type);
2538 if (err)
2539 return err;
2540
2541 err = airoha_qdma_set_rl_token_bucket(qdma, i, rate,
2542 bucket_size);
2543 if (err)
2544 return err;
2545 }
2546
2547 return 0;
2548 }
2549
airoha_tc_matchall_act_validate(struct tc_cls_matchall_offload * f)2550 static int airoha_tc_matchall_act_validate(struct tc_cls_matchall_offload *f)
2551 {
2552 const struct flow_action *actions = &f->rule->action;
2553 const struct flow_action_entry *act;
2554
2555 if (!flow_action_has_entries(actions)) {
2556 NL_SET_ERR_MSG_MOD(f->common.extack,
2557 "filter run with no actions");
2558 return -EINVAL;
2559 }
2560
2561 if (!flow_offload_has_one_action(actions)) {
2562 NL_SET_ERR_MSG_MOD(f->common.extack,
2563 "only once action per filter is supported");
2564 return -EOPNOTSUPP;
2565 }
2566
2567 act = &actions->entries[0];
2568 if (act->id != FLOW_ACTION_POLICE) {
2569 NL_SET_ERR_MSG_MOD(f->common.extack, "unsupported action");
2570 return -EOPNOTSUPP;
2571 }
2572
2573 if (act->police.exceed.act_id != FLOW_ACTION_DROP) {
2574 NL_SET_ERR_MSG_MOD(f->common.extack,
2575 "invalid exceed action id");
2576 return -EOPNOTSUPP;
2577 }
2578
2579 if (act->police.notexceed.act_id != FLOW_ACTION_ACCEPT) {
2580 NL_SET_ERR_MSG_MOD(f->common.extack,
2581 "invalid notexceed action id");
2582 return -EOPNOTSUPP;
2583 }
2584
2585 if (act->police.notexceed.act_id == FLOW_ACTION_ACCEPT &&
2586 !flow_action_is_last_entry(actions, act)) {
2587 NL_SET_ERR_MSG_MOD(f->common.extack,
2588 "action accept must be last");
2589 return -EOPNOTSUPP;
2590 }
2591
2592 if (act->police.peakrate_bytes_ps || act->police.avrate ||
2593 act->police.overhead || act->police.mtu) {
2594 NL_SET_ERR_MSG_MOD(f->common.extack,
2595 "peakrate/avrate/overhead/mtu unsupported");
2596 return -EOPNOTSUPP;
2597 }
2598
2599 return 0;
2600 }
2601
airoha_dev_tc_matchall(struct net_device * dev,struct tc_cls_matchall_offload * f)2602 static int airoha_dev_tc_matchall(struct net_device *dev,
2603 struct tc_cls_matchall_offload *f)
2604 {
2605 enum trtcm_unit_type unit_type = TRTCM_BYTE_UNIT;
2606 struct airoha_gdm_port *port = netdev_priv(dev);
2607 u32 rate = 0, bucket_size = 0;
2608
2609 switch (f->command) {
2610 case TC_CLSMATCHALL_REPLACE: {
2611 const struct flow_action_entry *act;
2612 int err;
2613
2614 err = airoha_tc_matchall_act_validate(f);
2615 if (err)
2616 return err;
2617
2618 act = &f->rule->action.entries[0];
2619 if (act->police.rate_pkt_ps) {
2620 rate = act->police.rate_pkt_ps;
2621 bucket_size = act->police.burst_pkt;
2622 unit_type = TRTCM_PACKET_UNIT;
2623 } else {
2624 rate = div_u64(act->police.rate_bytes_ps, 1000);
2625 rate = rate << 3; /* Kbps */
2626 bucket_size = act->police.burst;
2627 }
2628 fallthrough;
2629 }
2630 case TC_CLSMATCHALL_DESTROY:
2631 return airoha_qdma_set_rx_meter(port, rate, bucket_size,
2632 unit_type);
2633 default:
2634 return -EOPNOTSUPP;
2635 }
2636 }
2637
airoha_dev_setup_tc_block_cb(enum tc_setup_type type,void * type_data,void * cb_priv)2638 static int airoha_dev_setup_tc_block_cb(enum tc_setup_type type,
2639 void *type_data, void *cb_priv)
2640 {
2641 struct net_device *dev = cb_priv;
2642 struct airoha_gdm_port *port = netdev_priv(dev);
2643 struct airoha_eth *eth = port->qdma->eth;
2644
2645 if (!tc_can_offload(dev))
2646 return -EOPNOTSUPP;
2647
2648 switch (type) {
2649 case TC_SETUP_CLSFLOWER:
2650 return airoha_ppe_setup_tc_block_cb(ð->ppe->dev, type_data);
2651 case TC_SETUP_CLSMATCHALL:
2652 return airoha_dev_tc_matchall(dev, type_data);
2653 default:
2654 return -EOPNOTSUPP;
2655 }
2656 }
2657
airoha_dev_setup_tc_block(struct airoha_gdm_port * port,struct flow_block_offload * f)2658 static int airoha_dev_setup_tc_block(struct airoha_gdm_port *port,
2659 struct flow_block_offload *f)
2660 {
2661 flow_setup_cb_t *cb = airoha_dev_setup_tc_block_cb;
2662 static LIST_HEAD(block_cb_list);
2663 struct flow_block_cb *block_cb;
2664
2665 if (f->binder_type != FLOW_BLOCK_BINDER_TYPE_CLSACT_INGRESS)
2666 return -EOPNOTSUPP;
2667
2668 f->driver_block_list = &block_cb_list;
2669 switch (f->command) {
2670 case FLOW_BLOCK_BIND:
2671 block_cb = flow_block_cb_lookup(f->block, cb, port->dev);
2672 if (block_cb) {
2673 flow_block_cb_incref(block_cb);
2674 return 0;
2675 }
2676 block_cb = flow_block_cb_alloc(cb, port->dev, port->dev, NULL);
2677 if (IS_ERR(block_cb))
2678 return PTR_ERR(block_cb);
2679
2680 flow_block_cb_incref(block_cb);
2681 flow_block_cb_add(block_cb, f);
2682 list_add_tail(&block_cb->driver_list, &block_cb_list);
2683 return 0;
2684 case FLOW_BLOCK_UNBIND:
2685 block_cb = flow_block_cb_lookup(f->block, cb, port->dev);
2686 if (!block_cb)
2687 return -ENOENT;
2688
2689 if (!flow_block_cb_decref(block_cb)) {
2690 flow_block_cb_remove(block_cb, f);
2691 list_del(&block_cb->driver_list);
2692 }
2693 return 0;
2694 default:
2695 return -EOPNOTSUPP;
2696 }
2697 }
2698
airoha_tc_remove_htb_queue(struct airoha_gdm_port * port,int queue)2699 static void airoha_tc_remove_htb_queue(struct airoha_gdm_port *port, int queue)
2700 {
2701 struct net_device *dev = port->dev;
2702
2703 netif_set_real_num_tx_queues(dev, dev->real_num_tx_queues - 1);
2704 airoha_qdma_set_tx_rate_limit(port, queue + 1, 0, 0);
2705 clear_bit(queue, port->qos_sq_bmap);
2706 }
2707
airoha_tc_htb_delete_leaf_queue(struct airoha_gdm_port * port,struct tc_htb_qopt_offload * opt)2708 static int airoha_tc_htb_delete_leaf_queue(struct airoha_gdm_port *port,
2709 struct tc_htb_qopt_offload *opt)
2710 {
2711 u32 channel = TC_H_MIN(opt->classid) % AIROHA_NUM_QOS_CHANNELS;
2712
2713 if (!test_bit(channel, port->qos_sq_bmap)) {
2714 NL_SET_ERR_MSG_MOD(opt->extack, "invalid queue id");
2715 return -EINVAL;
2716 }
2717
2718 airoha_tc_remove_htb_queue(port, channel);
2719
2720 return 0;
2721 }
2722
airoha_tc_htb_destroy(struct airoha_gdm_port * port)2723 static int airoha_tc_htb_destroy(struct airoha_gdm_port *port)
2724 {
2725 int q;
2726
2727 for_each_set_bit(q, port->qos_sq_bmap, AIROHA_NUM_QOS_CHANNELS)
2728 airoha_tc_remove_htb_queue(port, q);
2729
2730 return 0;
2731 }
2732
airoha_tc_get_htb_get_leaf_queue(struct airoha_gdm_port * port,struct tc_htb_qopt_offload * opt)2733 static int airoha_tc_get_htb_get_leaf_queue(struct airoha_gdm_port *port,
2734 struct tc_htb_qopt_offload *opt)
2735 {
2736 u32 channel = TC_H_MIN(opt->classid) % AIROHA_NUM_QOS_CHANNELS;
2737
2738 if (!test_bit(channel, port->qos_sq_bmap)) {
2739 NL_SET_ERR_MSG_MOD(opt->extack, "invalid queue id");
2740 return -EINVAL;
2741 }
2742
2743 opt->qid = AIROHA_NUM_TX_RING + channel;
2744
2745 return 0;
2746 }
2747
airoha_tc_setup_qdisc_htb(struct airoha_gdm_port * port,struct tc_htb_qopt_offload * opt)2748 static int airoha_tc_setup_qdisc_htb(struct airoha_gdm_port *port,
2749 struct tc_htb_qopt_offload *opt)
2750 {
2751 switch (opt->command) {
2752 case TC_HTB_CREATE:
2753 break;
2754 case TC_HTB_DESTROY:
2755 return airoha_tc_htb_destroy(port);
2756 case TC_HTB_NODE_MODIFY:
2757 case TC_HTB_LEAF_ALLOC_QUEUE:
2758 return airoha_tc_htb_alloc_leaf_queue(port, opt);
2759 case TC_HTB_LEAF_DEL:
2760 case TC_HTB_LEAF_DEL_LAST:
2761 case TC_HTB_LEAF_DEL_LAST_FORCE:
2762 return airoha_tc_htb_delete_leaf_queue(port, opt);
2763 case TC_HTB_LEAF_QUERY_QUEUE:
2764 return airoha_tc_get_htb_get_leaf_queue(port, opt);
2765 default:
2766 return -EOPNOTSUPP;
2767 }
2768
2769 return 0;
2770 }
2771
airoha_dev_tc_setup(struct net_device * dev,enum tc_setup_type type,void * type_data)2772 static int airoha_dev_tc_setup(struct net_device *dev, enum tc_setup_type type,
2773 void *type_data)
2774 {
2775 struct airoha_gdm_port *port = netdev_priv(dev);
2776
2777 switch (type) {
2778 case TC_SETUP_QDISC_ETS:
2779 return airoha_tc_setup_qdisc_ets(port, type_data);
2780 case TC_SETUP_QDISC_HTB:
2781 return airoha_tc_setup_qdisc_htb(port, type_data);
2782 case TC_SETUP_BLOCK:
2783 case TC_SETUP_FT:
2784 return airoha_dev_setup_tc_block(port, type_data);
2785 default:
2786 return -EOPNOTSUPP;
2787 }
2788 }
2789
2790 static const struct net_device_ops airoha_netdev_ops = {
2791 .ndo_init = airoha_dev_init,
2792 .ndo_open = airoha_dev_open,
2793 .ndo_stop = airoha_dev_stop,
2794 .ndo_change_mtu = airoha_dev_change_mtu,
2795 .ndo_select_queue = airoha_dev_select_queue,
2796 .ndo_start_xmit = airoha_dev_xmit,
2797 .ndo_get_stats64 = airoha_dev_get_stats64,
2798 .ndo_set_mac_address = airoha_dev_set_macaddr,
2799 .ndo_setup_tc = airoha_dev_tc_setup,
2800 };
2801
2802 static const struct ethtool_ops airoha_ethtool_ops = {
2803 .get_drvinfo = airoha_ethtool_get_drvinfo,
2804 .get_eth_mac_stats = airoha_ethtool_get_mac_stats,
2805 .get_rmon_stats = airoha_ethtool_get_rmon_stats,
2806 .get_link = ethtool_op_get_link,
2807 };
2808
airoha_metadata_dst_alloc(struct airoha_gdm_port * port)2809 static int airoha_metadata_dst_alloc(struct airoha_gdm_port *port)
2810 {
2811 int i;
2812
2813 for (i = 0; i < ARRAY_SIZE(port->dsa_meta); i++) {
2814 struct metadata_dst *md_dst;
2815
2816 md_dst = metadata_dst_alloc(0, METADATA_HW_PORT_MUX,
2817 GFP_KERNEL);
2818 if (!md_dst)
2819 return -ENOMEM;
2820
2821 md_dst->u.port_info.port_id = i;
2822 port->dsa_meta[i] = md_dst;
2823 }
2824
2825 return 0;
2826 }
2827
airoha_metadata_dst_free(struct airoha_gdm_port * port)2828 static void airoha_metadata_dst_free(struct airoha_gdm_port *port)
2829 {
2830 int i;
2831
2832 for (i = 0; i < ARRAY_SIZE(port->dsa_meta); i++) {
2833 if (!port->dsa_meta[i])
2834 continue;
2835
2836 metadata_dst_free(port->dsa_meta[i]);
2837 }
2838 }
2839
airoha_is_valid_gdm_port(struct airoha_eth * eth,struct airoha_gdm_port * port)2840 bool airoha_is_valid_gdm_port(struct airoha_eth *eth,
2841 struct airoha_gdm_port *port)
2842 {
2843 int i;
2844
2845 for (i = 0; i < ARRAY_SIZE(eth->ports); i++) {
2846 if (eth->ports[i] == port)
2847 return true;
2848 }
2849
2850 return false;
2851 }
2852
airoha_alloc_gdm_port(struct airoha_eth * eth,struct device_node * np,int index)2853 static int airoha_alloc_gdm_port(struct airoha_eth *eth,
2854 struct device_node *np, int index)
2855 {
2856 const __be32 *id_ptr = of_get_property(np, "reg", NULL);
2857 struct airoha_gdm_port *port;
2858 struct airoha_qdma *qdma;
2859 struct net_device *dev;
2860 int err, p;
2861 u32 id;
2862
2863 if (!id_ptr) {
2864 dev_err(eth->dev, "missing gdm port id\n");
2865 return -EINVAL;
2866 }
2867
2868 id = be32_to_cpup(id_ptr);
2869 p = id - 1;
2870
2871 if (!id || id > ARRAY_SIZE(eth->ports)) {
2872 dev_err(eth->dev, "invalid gdm port id: %d\n", id);
2873 return -EINVAL;
2874 }
2875
2876 if (eth->ports[p]) {
2877 dev_err(eth->dev, "duplicate gdm port id: %d\n", id);
2878 return -EINVAL;
2879 }
2880
2881 dev = devm_alloc_etherdev_mqs(eth->dev, sizeof(*port),
2882 AIROHA_NUM_NETDEV_TX_RINGS,
2883 AIROHA_NUM_RX_RING);
2884 if (!dev) {
2885 dev_err(eth->dev, "alloc_etherdev failed\n");
2886 return -ENOMEM;
2887 }
2888
2889 qdma = ð->qdma[index % AIROHA_MAX_NUM_QDMA];
2890 dev->netdev_ops = &airoha_netdev_ops;
2891 dev->ethtool_ops = &airoha_ethtool_ops;
2892 dev->max_mtu = AIROHA_MAX_MTU;
2893 dev->watchdog_timeo = 5 * HZ;
2894 dev->hw_features = NETIF_F_IP_CSUM | NETIF_F_RXCSUM |
2895 NETIF_F_TSO6 | NETIF_F_IPV6_CSUM |
2896 NETIF_F_SG | NETIF_F_TSO |
2897 NETIF_F_HW_TC;
2898 dev->features |= dev->hw_features;
2899 dev->vlan_features = dev->hw_features;
2900 dev->dev.of_node = np;
2901 dev->irq = qdma->irq_banks[0].irq;
2902 SET_NETDEV_DEV(dev, eth->dev);
2903
2904 /* reserve hw queues for HTB offloading */
2905 err = netif_set_real_num_tx_queues(dev, AIROHA_NUM_TX_RING);
2906 if (err)
2907 return err;
2908
2909 err = of_get_ethdev_address(np, dev);
2910 if (err) {
2911 if (err == -EPROBE_DEFER)
2912 return err;
2913
2914 eth_hw_addr_random(dev);
2915 dev_info(eth->dev, "generated random MAC address %pM\n",
2916 dev->dev_addr);
2917 }
2918
2919 port = netdev_priv(dev);
2920 u64_stats_init(&port->stats.syncp);
2921 spin_lock_init(&port->stats.lock);
2922 port->qdma = qdma;
2923 port->dev = dev;
2924 port->id = id;
2925 eth->ports[p] = port;
2926
2927 err = airoha_metadata_dst_alloc(port);
2928 if (err)
2929 return err;
2930
2931 err = register_netdev(dev);
2932 if (err)
2933 goto free_metadata_dst;
2934
2935 return 0;
2936
2937 free_metadata_dst:
2938 airoha_metadata_dst_free(port);
2939 return err;
2940 }
2941
airoha_probe(struct platform_device * pdev)2942 static int airoha_probe(struct platform_device *pdev)
2943 {
2944 struct reset_control_bulk_data *xsi_rsts;
2945 struct device_node *np;
2946 struct airoha_eth *eth;
2947 int i, err;
2948
2949 eth = devm_kzalloc(&pdev->dev, sizeof(*eth), GFP_KERNEL);
2950 if (!eth)
2951 return -ENOMEM;
2952
2953 eth->soc = of_device_get_match_data(&pdev->dev);
2954 if (!eth->soc)
2955 return -EINVAL;
2956
2957 eth->dev = &pdev->dev;
2958
2959 err = dma_set_mask_and_coherent(eth->dev, DMA_BIT_MASK(32));
2960 if (err) {
2961 dev_err(eth->dev, "failed configuring DMA mask\n");
2962 return err;
2963 }
2964
2965 eth->fe_regs = devm_platform_ioremap_resource_byname(pdev, "fe");
2966 if (IS_ERR(eth->fe_regs))
2967 return dev_err_probe(eth->dev, PTR_ERR(eth->fe_regs),
2968 "failed to iomap fe regs\n");
2969
2970 eth->rsts[0].id = "fe";
2971 eth->rsts[1].id = "pdma";
2972 eth->rsts[2].id = "qdma";
2973 err = devm_reset_control_bulk_get_exclusive(eth->dev,
2974 ARRAY_SIZE(eth->rsts),
2975 eth->rsts);
2976 if (err) {
2977 dev_err(eth->dev, "failed to get bulk reset lines\n");
2978 return err;
2979 }
2980
2981 xsi_rsts = devm_kcalloc(eth->dev,
2982 eth->soc->num_xsi_rsts, sizeof(*xsi_rsts),
2983 GFP_KERNEL);
2984 if (!xsi_rsts)
2985 return -ENOMEM;
2986
2987 eth->xsi_rsts = xsi_rsts;
2988 for (i = 0; i < eth->soc->num_xsi_rsts; i++)
2989 eth->xsi_rsts[i].id = eth->soc->xsi_rsts_names[i];
2990
2991 err = devm_reset_control_bulk_get_exclusive(eth->dev,
2992 eth->soc->num_xsi_rsts,
2993 eth->xsi_rsts);
2994 if (err) {
2995 dev_err(eth->dev, "failed to get bulk xsi reset lines\n");
2996 return err;
2997 }
2998
2999 eth->napi_dev = alloc_netdev_dummy(0);
3000 if (!eth->napi_dev)
3001 return -ENOMEM;
3002
3003 /* Enable threaded NAPI by default */
3004 eth->napi_dev->threaded = true;
3005 strscpy(eth->napi_dev->name, "qdma_eth", sizeof(eth->napi_dev->name));
3006 platform_set_drvdata(pdev, eth);
3007
3008 err = airoha_hw_init(pdev, eth);
3009 if (err)
3010 goto error_hw_cleanup;
3011
3012 for (i = 0; i < ARRAY_SIZE(eth->qdma); i++)
3013 airoha_qdma_start_napi(ð->qdma[i]);
3014
3015 i = 0;
3016 for_each_child_of_node(pdev->dev.of_node, np) {
3017 if (!of_device_is_compatible(np, "airoha,eth-mac"))
3018 continue;
3019
3020 if (!of_device_is_available(np))
3021 continue;
3022
3023 err = airoha_alloc_gdm_port(eth, np, i++);
3024 if (err) {
3025 of_node_put(np);
3026 goto error_napi_stop;
3027 }
3028 }
3029
3030 return 0;
3031
3032 error_napi_stop:
3033 for (i = 0; i < ARRAY_SIZE(eth->qdma); i++)
3034 airoha_qdma_stop_napi(ð->qdma[i]);
3035 airoha_ppe_deinit(eth);
3036 error_hw_cleanup:
3037 for (i = 0; i < ARRAY_SIZE(eth->qdma); i++)
3038 airoha_hw_cleanup(ð->qdma[i]);
3039
3040 for (i = 0; i < ARRAY_SIZE(eth->ports); i++) {
3041 struct airoha_gdm_port *port = eth->ports[i];
3042
3043 if (port && port->dev->reg_state == NETREG_REGISTERED) {
3044 unregister_netdev(port->dev);
3045 airoha_metadata_dst_free(port);
3046 }
3047 }
3048 free_netdev(eth->napi_dev);
3049 platform_set_drvdata(pdev, NULL);
3050
3051 return err;
3052 }
3053
airoha_remove(struct platform_device * pdev)3054 static void airoha_remove(struct platform_device *pdev)
3055 {
3056 struct airoha_eth *eth = platform_get_drvdata(pdev);
3057 int i;
3058
3059 for (i = 0; i < ARRAY_SIZE(eth->qdma); i++) {
3060 airoha_qdma_stop_napi(ð->qdma[i]);
3061 airoha_hw_cleanup(ð->qdma[i]);
3062 }
3063
3064 for (i = 0; i < ARRAY_SIZE(eth->ports); i++) {
3065 struct airoha_gdm_port *port = eth->ports[i];
3066
3067 if (!port)
3068 continue;
3069
3070 airoha_dev_stop(port->dev);
3071 unregister_netdev(port->dev);
3072 airoha_metadata_dst_free(port);
3073 }
3074 free_netdev(eth->napi_dev);
3075
3076 airoha_ppe_deinit(eth);
3077 platform_set_drvdata(pdev, NULL);
3078 }
3079
3080 static const char * const en7581_xsi_rsts_names[] = {
3081 "xsi-mac",
3082 "hsi0-mac",
3083 "hsi1-mac",
3084 "hsi-mac",
3085 "xfp-mac",
3086 };
3087
airoha_en7581_get_src_port_id(struct airoha_gdm_port * port,int nbq)3088 static int airoha_en7581_get_src_port_id(struct airoha_gdm_port *port, int nbq)
3089 {
3090 switch (port->id) {
3091 case 3:
3092 /* 7581 SoC supports PCIe serdes on GDM3 port */
3093 if (nbq == 4)
3094 return HSGMII_LAN_7581_PCIE0_SRCPORT;
3095 if (nbq == 5)
3096 return HSGMII_LAN_7581_PCIE1_SRCPORT;
3097 break;
3098 case 4:
3099 /* 7581 SoC supports eth and usb serdes on GDM4 port */
3100 if (!nbq)
3101 return HSGMII_LAN_7581_ETH_SRCPORT;
3102 if (nbq == 1)
3103 return HSGMII_LAN_7581_USB_SRCPORT;
3104 break;
3105 default:
3106 break;
3107 }
3108
3109 return -EINVAL;
3110 }
3111
3112 static const char * const an7583_xsi_rsts_names[] = {
3113 "xsi-mac",
3114 "hsi0-mac",
3115 "hsi1-mac",
3116 "xfp-mac",
3117 };
3118
airoha_an7583_get_src_port_id(struct airoha_gdm_port * port,int nbq)3119 static int airoha_an7583_get_src_port_id(struct airoha_gdm_port *port, int nbq)
3120 {
3121 switch (port->id) {
3122 case 3:
3123 /* 7583 SoC supports eth serdes on GDM3 port */
3124 if (!nbq)
3125 return HSGMII_LAN_7583_ETH_SRCPORT;
3126 break;
3127 case 4:
3128 /* 7583 SoC supports PCIe and USB serdes on GDM4 port */
3129 if (!nbq)
3130 return HSGMII_LAN_7583_PCIE_SRCPORT;
3131 if (nbq == 1)
3132 return HSGMII_LAN_7583_USB_SRCPORT;
3133 break;
3134 default:
3135 break;
3136 }
3137
3138 return -EINVAL;
3139 }
3140
3141 static const struct airoha_eth_soc_data en7581_soc_data = {
3142 .version = 0x7581,
3143 .xsi_rsts_names = en7581_xsi_rsts_names,
3144 .num_xsi_rsts = ARRAY_SIZE(en7581_xsi_rsts_names),
3145 .num_ppe = 2,
3146 .ops = {
3147 .get_src_port_id = airoha_en7581_get_src_port_id,
3148 },
3149 };
3150
3151 static const struct airoha_eth_soc_data an7583_soc_data = {
3152 .version = 0x7583,
3153 .xsi_rsts_names = an7583_xsi_rsts_names,
3154 .num_xsi_rsts = ARRAY_SIZE(an7583_xsi_rsts_names),
3155 .num_ppe = 1,
3156 .ops = {
3157 .get_src_port_id = airoha_an7583_get_src_port_id,
3158 },
3159 };
3160
3161 static const struct of_device_id of_airoha_match[] = {
3162 { .compatible = "airoha,en7581-eth", .data = &en7581_soc_data },
3163 { .compatible = "airoha,an7583-eth", .data = &an7583_soc_data },
3164 { /* sentinel */ }
3165 };
3166 MODULE_DEVICE_TABLE(of, of_airoha_match);
3167
3168 static struct platform_driver airoha_driver = {
3169 .probe = airoha_probe,
3170 .remove = airoha_remove,
3171 .driver = {
3172 .name = KBUILD_MODNAME,
3173 .of_match_table = of_airoha_match,
3174 },
3175 };
3176 module_platform_driver(airoha_driver);
3177
3178 MODULE_LICENSE("GPL");
3179 MODULE_AUTHOR("Lorenzo Bianconi <lorenzo@kernel.org>");
3180 MODULE_DESCRIPTION("Ethernet driver for Airoha SoC");
3181