Commit | Line | Data |
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656e7052 JC |
1 | /* This program is free software; you can redistribute it and/or modify |
2 | * it under the terms of the GNU General Public License as published by | |
3 | * the Free Software Foundation; version 2 of the License | |
4 | * | |
5 | * This program is distributed in the hope that it will be useful, | |
6 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
7 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
8 | * GNU General Public License for more details. | |
9 | * | |
10 | * Copyright (C) 2009-2016 John Crispin <blogic@openwrt.org> | |
11 | * Copyright (C) 2009-2016 Felix Fietkau <nbd@openwrt.org> | |
12 | * Copyright (C) 2013-2016 Michael Lee <igvtee@gmail.com> | |
13 | */ | |
14 | ||
15 | #include <linux/of_device.h> | |
16 | #include <linux/of_mdio.h> | |
17 | #include <linux/of_net.h> | |
18 | #include <linux/mfd/syscon.h> | |
19 | #include <linux/regmap.h> | |
20 | #include <linux/clk.h> | |
26a2ad8a | 21 | #include <linux/pm_runtime.h> |
656e7052 JC |
22 | #include <linux/if_vlan.h> |
23 | #include <linux/reset.h> | |
24 | #include <linux/tcp.h> | |
70dba204 | 25 | #include <linux/interrupt.h> |
140995c9 | 26 | #include <linux/pinctrl/devinfo.h> |
656e7052 JC |
27 | |
28 | #include "mtk_eth_soc.h" | |
29 | ||
30 | static int mtk_msg_level = -1; | |
31 | module_param_named(msg_level, mtk_msg_level, int, 0); | |
32 | MODULE_PARM_DESC(msg_level, "Message level (-1=defaults,0=none,...,16=all)"); | |
33 | ||
34 | #define MTK_ETHTOOL_STAT(x) { #x, \ | |
35 | offsetof(struct mtk_hw_stats, x) / sizeof(u64) } | |
36 | ||
37 | /* strings used by ethtool */ | |
38 | static const struct mtk_ethtool_stats { | |
39 | char str[ETH_GSTRING_LEN]; | |
40 | u32 offset; | |
41 | } mtk_ethtool_stats[] = { | |
42 | MTK_ETHTOOL_STAT(tx_bytes), | |
43 | MTK_ETHTOOL_STAT(tx_packets), | |
44 | MTK_ETHTOOL_STAT(tx_skip), | |
45 | MTK_ETHTOOL_STAT(tx_collisions), | |
46 | MTK_ETHTOOL_STAT(rx_bytes), | |
47 | MTK_ETHTOOL_STAT(rx_packets), | |
48 | MTK_ETHTOOL_STAT(rx_overflow), | |
49 | MTK_ETHTOOL_STAT(rx_fcs_errors), | |
50 | MTK_ETHTOOL_STAT(rx_short_errors), | |
51 | MTK_ETHTOOL_STAT(rx_long_errors), | |
52 | MTK_ETHTOOL_STAT(rx_checksum_errors), | |
53 | MTK_ETHTOOL_STAT(rx_flow_control_packets), | |
54 | }; | |
55 | ||
549e5495 | 56 | static const char * const mtk_clks_source_name[] = { |
42c03844 SW |
57 | "ethif", "esw", "gp0", "gp1", "gp2", "trgpll", "sgmii_tx250m", |
58 | "sgmii_rx250m", "sgmii_cdr_ref", "sgmii_cdr_fb", "sgmii_ck", "eth2pll" | |
549e5495 SW |
59 | }; |
60 | ||
656e7052 JC |
61 | void mtk_w32(struct mtk_eth *eth, u32 val, unsigned reg) |
62 | { | |
63 | __raw_writel(val, eth->base + reg); | |
64 | } | |
65 | ||
66 | u32 mtk_r32(struct mtk_eth *eth, unsigned reg) | |
67 | { | |
68 | return __raw_readl(eth->base + reg); | |
69 | } | |
70 | ||
71 | static int mtk_mdio_busy_wait(struct mtk_eth *eth) | |
72 | { | |
73 | unsigned long t_start = jiffies; | |
74 | ||
75 | while (1) { | |
76 | if (!(mtk_r32(eth, MTK_PHY_IAC) & PHY_IAC_ACCESS)) | |
77 | return 0; | |
78 | if (time_after(jiffies, t_start + PHY_IAC_TIMEOUT)) | |
79 | break; | |
80 | usleep_range(10, 20); | |
81 | } | |
82 | ||
83 | dev_err(eth->dev, "mdio: MDIO timeout\n"); | |
84 | return -1; | |
85 | } | |
86 | ||
379672de WY |
87 | static u32 _mtk_mdio_write(struct mtk_eth *eth, u32 phy_addr, |
88 | u32 phy_register, u32 write_data) | |
656e7052 JC |
89 | { |
90 | if (mtk_mdio_busy_wait(eth)) | |
91 | return -1; | |
92 | ||
93 | write_data &= 0xffff; | |
94 | ||
95 | mtk_w32(eth, PHY_IAC_ACCESS | PHY_IAC_START | PHY_IAC_WRITE | | |
96 | (phy_register << PHY_IAC_REG_SHIFT) | | |
97 | (phy_addr << PHY_IAC_ADDR_SHIFT) | write_data, | |
98 | MTK_PHY_IAC); | |
99 | ||
100 | if (mtk_mdio_busy_wait(eth)) | |
101 | return -1; | |
102 | ||
103 | return 0; | |
104 | } | |
105 | ||
379672de | 106 | static u32 _mtk_mdio_read(struct mtk_eth *eth, int phy_addr, int phy_reg) |
656e7052 JC |
107 | { |
108 | u32 d; | |
109 | ||
110 | if (mtk_mdio_busy_wait(eth)) | |
111 | return 0xffff; | |
112 | ||
113 | mtk_w32(eth, PHY_IAC_ACCESS | PHY_IAC_START | PHY_IAC_READ | | |
114 | (phy_reg << PHY_IAC_REG_SHIFT) | | |
115 | (phy_addr << PHY_IAC_ADDR_SHIFT), | |
116 | MTK_PHY_IAC); | |
117 | ||
118 | if (mtk_mdio_busy_wait(eth)) | |
119 | return 0xffff; | |
120 | ||
121 | d = mtk_r32(eth, MTK_PHY_IAC) & 0xffff; | |
122 | ||
123 | return d; | |
124 | } | |
125 | ||
126 | static int mtk_mdio_write(struct mii_bus *bus, int phy_addr, | |
127 | int phy_reg, u16 val) | |
128 | { | |
129 | struct mtk_eth *eth = bus->priv; | |
130 | ||
131 | return _mtk_mdio_write(eth, phy_addr, phy_reg, val); | |
132 | } | |
133 | ||
134 | static int mtk_mdio_read(struct mii_bus *bus, int phy_addr, int phy_reg) | |
135 | { | |
136 | struct mtk_eth *eth = bus->priv; | |
137 | ||
138 | return _mtk_mdio_read(eth, phy_addr, phy_reg); | |
139 | } | |
140 | ||
f430dea7 SW |
141 | static void mtk_gmac0_rgmii_adjust(struct mtk_eth *eth, int speed) |
142 | { | |
143 | u32 val; | |
144 | int ret; | |
145 | ||
146 | val = (speed == SPEED_1000) ? | |
147 | INTF_MODE_RGMII_1000 : INTF_MODE_RGMII_10_100; | |
148 | mtk_w32(eth, val, INTF_MODE); | |
149 | ||
150 | regmap_update_bits(eth->ethsys, ETHSYS_CLKCFG0, | |
151 | ETHSYS_TRGMII_CLK_SEL362_5, | |
152 | ETHSYS_TRGMII_CLK_SEL362_5); | |
153 | ||
154 | val = (speed == SPEED_1000) ? 250000000 : 500000000; | |
155 | ret = clk_set_rate(eth->clks[MTK_CLK_TRGPLL], val); | |
156 | if (ret) | |
157 | dev_err(eth->dev, "Failed to set trgmii pll: %d\n", ret); | |
158 | ||
159 | val = (speed == SPEED_1000) ? | |
160 | RCK_CTRL_RGMII_1000 : RCK_CTRL_RGMII_10_100; | |
161 | mtk_w32(eth, val, TRGMII_RCK_CTRL); | |
162 | ||
163 | val = (speed == SPEED_1000) ? | |
164 | TCK_CTRL_RGMII_1000 : TCK_CTRL_RGMII_10_100; | |
165 | mtk_w32(eth, val, TRGMII_TCK_CTRL); | |
166 | } | |
167 | ||
42c03844 SW |
168 | static void mtk_gmac_sgmii_hw_setup(struct mtk_eth *eth, int mac_id) |
169 | { | |
170 | u32 val; | |
171 | ||
172 | /* Setup the link timer and QPHY power up inside SGMIISYS */ | |
173 | regmap_write(eth->sgmiisys, SGMSYS_PCS_LINK_TIMER, | |
174 | SGMII_LINK_TIMER_DEFAULT); | |
175 | ||
176 | regmap_read(eth->sgmiisys, SGMSYS_SGMII_MODE, &val); | |
177 | val |= SGMII_REMOTE_FAULT_DIS; | |
178 | regmap_write(eth->sgmiisys, SGMSYS_SGMII_MODE, val); | |
179 | ||
180 | regmap_read(eth->sgmiisys, SGMSYS_PCS_CONTROL_1, &val); | |
181 | val |= SGMII_AN_RESTART; | |
182 | regmap_write(eth->sgmiisys, SGMSYS_PCS_CONTROL_1, val); | |
183 | ||
184 | regmap_read(eth->sgmiisys, SGMSYS_QPHY_PWR_STATE_CTRL, &val); | |
185 | val &= ~SGMII_PHYA_PWD; | |
186 | regmap_write(eth->sgmiisys, SGMSYS_QPHY_PWR_STATE_CTRL, val); | |
187 | ||
188 | /* Determine MUX for which GMAC uses the SGMII interface */ | |
189 | if (MTK_HAS_CAPS(eth->soc->caps, MTK_DUAL_GMAC_SHARED_SGMII)) { | |
190 | regmap_read(eth->ethsys, ETHSYS_SYSCFG0, &val); | |
191 | val &= ~SYSCFG0_SGMII_MASK; | |
192 | val |= !mac_id ? SYSCFG0_SGMII_GMAC1 : SYSCFG0_SGMII_GMAC2; | |
193 | regmap_write(eth->ethsys, ETHSYS_SYSCFG0, val); | |
194 | ||
195 | dev_info(eth->dev, "setup shared sgmii for gmac=%d\n", | |
196 | mac_id); | |
197 | } | |
198 | ||
199 | /* Setup the GMAC1 going through SGMII path when SoC also support | |
200 | * ESW on GMAC1 | |
201 | */ | |
202 | if (MTK_HAS_CAPS(eth->soc->caps, MTK_GMAC1_ESW | MTK_GMAC1_SGMII) && | |
203 | !mac_id) { | |
204 | mtk_w32(eth, 0, MTK_MAC_MISC); | |
205 | dev_info(eth->dev, "setup gmac1 going through sgmii"); | |
206 | } | |
207 | } | |
208 | ||
656e7052 JC |
209 | static void mtk_phy_link_adjust(struct net_device *dev) |
210 | { | |
211 | struct mtk_mac *mac = netdev_priv(dev); | |
08ef55c6 JC |
212 | u16 lcl_adv = 0, rmt_adv = 0; |
213 | u8 flowctrl; | |
656e7052 JC |
214 | u32 mcr = MAC_MCR_MAX_RX_1536 | MAC_MCR_IPG_CFG | |
215 | MAC_MCR_FORCE_MODE | MAC_MCR_TX_EN | | |
216 | MAC_MCR_RX_EN | MAC_MCR_BACKOFF_EN | | |
217 | MAC_MCR_BACKPR_EN; | |
218 | ||
dce6fa42 SW |
219 | if (unlikely(test_bit(MTK_RESETTING, &mac->hw->state))) |
220 | return; | |
221 | ||
2364c5c5 | 222 | switch (dev->phydev->speed) { |
656e7052 JC |
223 | case SPEED_1000: |
224 | mcr |= MAC_MCR_SPEED_1000; | |
225 | break; | |
226 | case SPEED_100: | |
227 | mcr |= MAC_MCR_SPEED_100; | |
228 | break; | |
229 | }; | |
230 | ||
2ec50f57 SW |
231 | if (MTK_HAS_CAPS(mac->hw->soc->caps, MTK_GMAC1_TRGMII) && |
232 | !mac->id && !mac->trgmii) | |
2364c5c5 | 233 | mtk_gmac0_rgmii_adjust(mac->hw, dev->phydev->speed); |
f430dea7 | 234 | |
2364c5c5 | 235 | if (dev->phydev->link) |
656e7052 JC |
236 | mcr |= MAC_MCR_FORCE_LINK; |
237 | ||
2364c5c5 | 238 | if (dev->phydev->duplex) { |
656e7052 JC |
239 | mcr |= MAC_MCR_FORCE_DPX; |
240 | ||
2364c5c5 | 241 | if (dev->phydev->pause) |
08ef55c6 | 242 | rmt_adv = LPA_PAUSE_CAP; |
2364c5c5 | 243 | if (dev->phydev->asym_pause) |
08ef55c6 JC |
244 | rmt_adv |= LPA_PAUSE_ASYM; |
245 | ||
2364c5c5 | 246 | if (dev->phydev->advertising & ADVERTISED_Pause) |
08ef55c6 | 247 | lcl_adv |= ADVERTISE_PAUSE_CAP; |
2364c5c5 | 248 | if (dev->phydev->advertising & ADVERTISED_Asym_Pause) |
08ef55c6 JC |
249 | lcl_adv |= ADVERTISE_PAUSE_ASYM; |
250 | ||
251 | flowctrl = mii_resolve_flowctrl_fdx(lcl_adv, rmt_adv); | |
252 | ||
253 | if (flowctrl & FLOW_CTRL_TX) | |
254 | mcr |= MAC_MCR_FORCE_TX_FC; | |
255 | if (flowctrl & FLOW_CTRL_RX) | |
256 | mcr |= MAC_MCR_FORCE_RX_FC; | |
257 | ||
258 | netif_dbg(mac->hw, link, dev, "rx pause %s, tx pause %s\n", | |
259 | flowctrl & FLOW_CTRL_RX ? "enabled" : "disabled", | |
260 | flowctrl & FLOW_CTRL_TX ? "enabled" : "disabled"); | |
261 | } | |
656e7052 JC |
262 | |
263 | mtk_w32(mac->hw, mcr, MTK_MAC_MCR(mac->id)); | |
264 | ||
2364c5c5 | 265 | if (dev->phydev->link) |
656e7052 JC |
266 | netif_carrier_on(dev); |
267 | else | |
268 | netif_carrier_off(dev); | |
5969c427 JC |
269 | |
270 | if (!of_phy_is_fixed_link(mac->of_node)) | |
271 | phy_print_status(dev->phydev); | |
656e7052 JC |
272 | } |
273 | ||
274 | static int mtk_phy_connect_node(struct mtk_eth *eth, struct mtk_mac *mac, | |
275 | struct device_node *phy_node) | |
276 | { | |
656e7052 | 277 | struct phy_device *phydev; |
a2b2a19f | 278 | int phy_mode; |
656e7052 | 279 | |
656e7052 JC |
280 | phy_mode = of_get_phy_mode(phy_node); |
281 | if (phy_mode < 0) { | |
282 | dev_err(eth->dev, "incorrect phy-mode %d\n", phy_mode); | |
283 | return -EINVAL; | |
284 | } | |
285 | ||
286 | phydev = of_phy_connect(eth->netdev[mac->id], phy_node, | |
287 | mtk_phy_link_adjust, 0, phy_mode); | |
977bc20c | 288 | if (!phydev) { |
656e7052 | 289 | dev_err(eth->dev, "could not connect to PHY\n"); |
977bc20c | 290 | return -ENODEV; |
656e7052 JC |
291 | } |
292 | ||
293 | dev_info(eth->dev, | |
294 | "connected mac %d to PHY at %s [uid=%08x, driver=%s]\n", | |
295 | mac->id, phydev_name(phydev), phydev->phy_id, | |
296 | phydev->drv->name); | |
297 | ||
656e7052 JC |
298 | return 0; |
299 | } | |
300 | ||
2364c5c5 | 301 | static int mtk_phy_connect(struct net_device *dev) |
656e7052 | 302 | { |
2364c5c5 SW |
303 | struct mtk_mac *mac = netdev_priv(dev); |
304 | struct mtk_eth *eth; | |
656e7052 | 305 | struct device_node *np; |
9ea4d311 | 306 | u32 val; |
656e7052 | 307 | |
2364c5c5 | 308 | eth = mac->hw; |
656e7052 | 309 | np = of_parse_phandle(mac->of_node, "phy-handle", 0); |
0c72c50f JC |
310 | if (!np && of_phy_is_fixed_link(mac->of_node)) |
311 | if (!of_phy_register_fixed_link(mac->of_node)) | |
312 | np = of_node_get(mac->of_node); | |
656e7052 JC |
313 | if (!np) |
314 | return -ENODEV; | |
315 | ||
42c03844 | 316 | mac->ge_mode = 0; |
656e7052 | 317 | switch (of_get_phy_mode(np)) { |
572de608 SW |
318 | case PHY_INTERFACE_MODE_TRGMII: |
319 | mac->trgmii = true; | |
37920fce JC |
320 | case PHY_INTERFACE_MODE_RGMII_TXID: |
321 | case PHY_INTERFACE_MODE_RGMII_RXID: | |
322 | case PHY_INTERFACE_MODE_RGMII_ID: | |
656e7052 | 323 | case PHY_INTERFACE_MODE_RGMII: |
42c03844 SW |
324 | break; |
325 | case PHY_INTERFACE_MODE_SGMII: | |
326 | if (MTK_HAS_CAPS(eth->soc->caps, MTK_SGMII)) | |
327 | mtk_gmac_sgmii_hw_setup(eth, mac->id); | |
656e7052 JC |
328 | break; |
329 | case PHY_INTERFACE_MODE_MII: | |
9ea4d311 | 330 | mac->ge_mode = 1; |
656e7052 | 331 | break; |
8ca7f4fe | 332 | case PHY_INTERFACE_MODE_REVMII: |
9ea4d311 | 333 | mac->ge_mode = 2; |
656e7052 | 334 | break; |
8ca7f4fe | 335 | case PHY_INTERFACE_MODE_RMII: |
336 | if (!mac->id) | |
337 | goto err_phy; | |
9ea4d311 | 338 | mac->ge_mode = 3; |
8ca7f4fe | 339 | break; |
656e7052 | 340 | default: |
8ca7f4fe | 341 | goto err_phy; |
656e7052 JC |
342 | } |
343 | ||
344 | /* put the gmac into the right mode */ | |
345 | regmap_read(eth->ethsys, ETHSYS_SYSCFG0, &val); | |
346 | val &= ~SYSCFG0_GE_MODE(SYSCFG0_GE_MASK, mac->id); | |
9ea4d311 | 347 | val |= SYSCFG0_GE_MODE(mac->ge_mode, mac->id); |
656e7052 JC |
348 | regmap_write(eth->ethsys, ETHSYS_SYSCFG0, val); |
349 | ||
2364c5c5 | 350 | /* couple phydev to net_device */ |
f6f7d9c0 SW |
351 | if (mtk_phy_connect_node(eth, mac, np)) |
352 | goto err_phy; | |
353 | ||
2364c5c5 SW |
354 | dev->phydev->autoneg = AUTONEG_ENABLE; |
355 | dev->phydev->speed = 0; | |
356 | dev->phydev->duplex = 0; | |
b2025c7c | 357 | |
358 | if (of_phy_is_fixed_link(mac->of_node)) | |
2364c5c5 | 359 | dev->phydev->supported |= |
b2025c7c | 360 | SUPPORTED_Pause | SUPPORTED_Asym_Pause; |
361 | ||
2364c5c5 | 362 | dev->phydev->supported &= PHY_GBIT_FEATURES | SUPPORTED_Pause | |
08ef55c6 | 363 | SUPPORTED_Asym_Pause; |
2364c5c5 | 364 | dev->phydev->advertising = dev->phydev->supported | |
656e7052 | 365 | ADVERTISED_Autoneg; |
2364c5c5 | 366 | phy_start_aneg(dev->phydev); |
656e7052 | 367 | |
e8c2993a | 368 | of_node_put(np); |
369 | ||
656e7052 | 370 | return 0; |
8ca7f4fe | 371 | |
372 | err_phy: | |
16a67eb3 JH |
373 | if (of_phy_is_fixed_link(mac->of_node)) |
374 | of_phy_deregister_fixed_link(mac->of_node); | |
8ca7f4fe | 375 | of_node_put(np); |
f6f7d9c0 | 376 | dev_err(eth->dev, "%s: invalid phy\n", __func__); |
8ca7f4fe | 377 | return -EINVAL; |
656e7052 JC |
378 | } |
379 | ||
380 | static int mtk_mdio_init(struct mtk_eth *eth) | |
381 | { | |
382 | struct device_node *mii_np; | |
1e515b7f | 383 | int ret; |
656e7052 JC |
384 | |
385 | mii_np = of_get_child_by_name(eth->dev->of_node, "mdio-bus"); | |
386 | if (!mii_np) { | |
387 | dev_err(eth->dev, "no %s child node found", "mdio-bus"); | |
388 | return -ENODEV; | |
389 | } | |
390 | ||
391 | if (!of_device_is_available(mii_np)) { | |
aa6e8a54 | 392 | ret = -ENODEV; |
656e7052 JC |
393 | goto err_put_node; |
394 | } | |
395 | ||
1e515b7f | 396 | eth->mii_bus = devm_mdiobus_alloc(eth->dev); |
656e7052 | 397 | if (!eth->mii_bus) { |
1e515b7f | 398 | ret = -ENOMEM; |
656e7052 JC |
399 | goto err_put_node; |
400 | } | |
401 | ||
402 | eth->mii_bus->name = "mdio"; | |
403 | eth->mii_bus->read = mtk_mdio_read; | |
404 | eth->mii_bus->write = mtk_mdio_write; | |
405 | eth->mii_bus->priv = eth; | |
406 | eth->mii_bus->parent = eth->dev; | |
407 | ||
408 | snprintf(eth->mii_bus->id, MII_BUS_ID_SIZE, "%s", mii_np->name); | |
1e515b7f | 409 | ret = of_mdiobus_register(eth->mii_bus, mii_np); |
656e7052 JC |
410 | |
411 | err_put_node: | |
412 | of_node_put(mii_np); | |
1e515b7f | 413 | return ret; |
656e7052 JC |
414 | } |
415 | ||
416 | static void mtk_mdio_cleanup(struct mtk_eth *eth) | |
417 | { | |
418 | if (!eth->mii_bus) | |
419 | return; | |
420 | ||
421 | mdiobus_unregister(eth->mii_bus); | |
656e7052 JC |
422 | } |
423 | ||
5cce0322 | 424 | static inline void mtk_tx_irq_disable(struct mtk_eth *eth, u32 mask) |
656e7052 | 425 | { |
7bc9ccec | 426 | unsigned long flags; |
656e7052 JC |
427 | u32 val; |
428 | ||
5cce0322 JC |
429 | spin_lock_irqsave(ð->tx_irq_lock, flags); |
430 | val = mtk_r32(eth, MTK_QDMA_INT_MASK); | |
431 | mtk_w32(eth, val & ~mask, MTK_QDMA_INT_MASK); | |
432 | spin_unlock_irqrestore(ð->tx_irq_lock, flags); | |
656e7052 JC |
433 | } |
434 | ||
5cce0322 | 435 | static inline void mtk_tx_irq_enable(struct mtk_eth *eth, u32 mask) |
656e7052 | 436 | { |
7bc9ccec | 437 | unsigned long flags; |
656e7052 JC |
438 | u32 val; |
439 | ||
5cce0322 JC |
440 | spin_lock_irqsave(ð->tx_irq_lock, flags); |
441 | val = mtk_r32(eth, MTK_QDMA_INT_MASK); | |
442 | mtk_w32(eth, val | mask, MTK_QDMA_INT_MASK); | |
443 | spin_unlock_irqrestore(ð->tx_irq_lock, flags); | |
444 | } | |
445 | ||
446 | static inline void mtk_rx_irq_disable(struct mtk_eth *eth, u32 mask) | |
447 | { | |
448 | unsigned long flags; | |
449 | u32 val; | |
450 | ||
451 | spin_lock_irqsave(ð->rx_irq_lock, flags); | |
452 | val = mtk_r32(eth, MTK_PDMA_INT_MASK); | |
453 | mtk_w32(eth, val & ~mask, MTK_PDMA_INT_MASK); | |
454 | spin_unlock_irqrestore(ð->rx_irq_lock, flags); | |
455 | } | |
456 | ||
457 | static inline void mtk_rx_irq_enable(struct mtk_eth *eth, u32 mask) | |
458 | { | |
459 | unsigned long flags; | |
460 | u32 val; | |
461 | ||
462 | spin_lock_irqsave(ð->rx_irq_lock, flags); | |
463 | val = mtk_r32(eth, MTK_PDMA_INT_MASK); | |
464 | mtk_w32(eth, val | mask, MTK_PDMA_INT_MASK); | |
465 | spin_unlock_irqrestore(ð->rx_irq_lock, flags); | |
656e7052 JC |
466 | } |
467 | ||
468 | static int mtk_set_mac_address(struct net_device *dev, void *p) | |
469 | { | |
470 | int ret = eth_mac_addr(dev, p); | |
471 | struct mtk_mac *mac = netdev_priv(dev); | |
472 | const char *macaddr = dev->dev_addr; | |
656e7052 JC |
473 | |
474 | if (ret) | |
475 | return ret; | |
476 | ||
dce6fa42 SW |
477 | if (unlikely(test_bit(MTK_RESETTING, &mac->hw->state))) |
478 | return -EBUSY; | |
479 | ||
e3e9652a | 480 | spin_lock_bh(&mac->hw->page_lock); |
656e7052 JC |
481 | mtk_w32(mac->hw, (macaddr[0] << 8) | macaddr[1], |
482 | MTK_GDMA_MAC_ADRH(mac->id)); | |
483 | mtk_w32(mac->hw, (macaddr[2] << 24) | (macaddr[3] << 16) | | |
484 | (macaddr[4] << 8) | macaddr[5], | |
485 | MTK_GDMA_MAC_ADRL(mac->id)); | |
e3e9652a | 486 | spin_unlock_bh(&mac->hw->page_lock); |
656e7052 JC |
487 | |
488 | return 0; | |
489 | } | |
490 | ||
491 | void mtk_stats_update_mac(struct mtk_mac *mac) | |
492 | { | |
493 | struct mtk_hw_stats *hw_stats = mac->hw_stats; | |
494 | unsigned int base = MTK_GDM1_TX_GBCNT; | |
495 | u64 stats; | |
496 | ||
497 | base += hw_stats->reg_offset; | |
498 | ||
499 | u64_stats_update_begin(&hw_stats->syncp); | |
500 | ||
501 | hw_stats->rx_bytes += mtk_r32(mac->hw, base); | |
502 | stats = mtk_r32(mac->hw, base + 0x04); | |
503 | if (stats) | |
504 | hw_stats->rx_bytes += (stats << 32); | |
505 | hw_stats->rx_packets += mtk_r32(mac->hw, base + 0x08); | |
506 | hw_stats->rx_overflow += mtk_r32(mac->hw, base + 0x10); | |
507 | hw_stats->rx_fcs_errors += mtk_r32(mac->hw, base + 0x14); | |
508 | hw_stats->rx_short_errors += mtk_r32(mac->hw, base + 0x18); | |
509 | hw_stats->rx_long_errors += mtk_r32(mac->hw, base + 0x1c); | |
510 | hw_stats->rx_checksum_errors += mtk_r32(mac->hw, base + 0x20); | |
511 | hw_stats->rx_flow_control_packets += | |
512 | mtk_r32(mac->hw, base + 0x24); | |
513 | hw_stats->tx_skip += mtk_r32(mac->hw, base + 0x28); | |
514 | hw_stats->tx_collisions += mtk_r32(mac->hw, base + 0x2c); | |
515 | hw_stats->tx_bytes += mtk_r32(mac->hw, base + 0x30); | |
516 | stats = mtk_r32(mac->hw, base + 0x34); | |
517 | if (stats) | |
518 | hw_stats->tx_bytes += (stats << 32); | |
519 | hw_stats->tx_packets += mtk_r32(mac->hw, base + 0x38); | |
520 | u64_stats_update_end(&hw_stats->syncp); | |
521 | } | |
522 | ||
523 | static void mtk_stats_update(struct mtk_eth *eth) | |
524 | { | |
525 | int i; | |
526 | ||
527 | for (i = 0; i < MTK_MAC_COUNT; i++) { | |
528 | if (!eth->mac[i] || !eth->mac[i]->hw_stats) | |
529 | continue; | |
530 | if (spin_trylock(ð->mac[i]->hw_stats->stats_lock)) { | |
531 | mtk_stats_update_mac(eth->mac[i]); | |
532 | spin_unlock(ð->mac[i]->hw_stats->stats_lock); | |
533 | } | |
534 | } | |
535 | } | |
536 | ||
bc1f4470 | 537 | static void mtk_get_stats64(struct net_device *dev, |
538 | struct rtnl_link_stats64 *storage) | |
656e7052 JC |
539 | { |
540 | struct mtk_mac *mac = netdev_priv(dev); | |
541 | struct mtk_hw_stats *hw_stats = mac->hw_stats; | |
542 | unsigned int start; | |
543 | ||
544 | if (netif_running(dev) && netif_device_present(dev)) { | |
8d32e062 | 545 | if (spin_trylock_bh(&hw_stats->stats_lock)) { |
656e7052 | 546 | mtk_stats_update_mac(mac); |
8d32e062 | 547 | spin_unlock_bh(&hw_stats->stats_lock); |
656e7052 JC |
548 | } |
549 | } | |
550 | ||
551 | do { | |
552 | start = u64_stats_fetch_begin_irq(&hw_stats->syncp); | |
553 | storage->rx_packets = hw_stats->rx_packets; | |
554 | storage->tx_packets = hw_stats->tx_packets; | |
555 | storage->rx_bytes = hw_stats->rx_bytes; | |
556 | storage->tx_bytes = hw_stats->tx_bytes; | |
557 | storage->collisions = hw_stats->tx_collisions; | |
558 | storage->rx_length_errors = hw_stats->rx_short_errors + | |
559 | hw_stats->rx_long_errors; | |
560 | storage->rx_over_errors = hw_stats->rx_overflow; | |
561 | storage->rx_crc_errors = hw_stats->rx_fcs_errors; | |
562 | storage->rx_errors = hw_stats->rx_checksum_errors; | |
563 | storage->tx_aborted_errors = hw_stats->tx_skip; | |
564 | } while (u64_stats_fetch_retry_irq(&hw_stats->syncp, start)); | |
565 | ||
566 | storage->tx_errors = dev->stats.tx_errors; | |
567 | storage->rx_dropped = dev->stats.rx_dropped; | |
568 | storage->tx_dropped = dev->stats.tx_dropped; | |
656e7052 JC |
569 | } |
570 | ||
571 | static inline int mtk_max_frag_size(int mtu) | |
572 | { | |
573 | /* make sure buf_size will be at least MTK_MAX_RX_LENGTH */ | |
574 | if (mtu + MTK_RX_ETH_HLEN < MTK_MAX_RX_LENGTH) | |
575 | mtu = MTK_MAX_RX_LENGTH - MTK_RX_ETH_HLEN; | |
576 | ||
577 | return SKB_DATA_ALIGN(MTK_RX_HLEN + mtu) + | |
578 | SKB_DATA_ALIGN(sizeof(struct skb_shared_info)); | |
579 | } | |
580 | ||
581 | static inline int mtk_max_buf_size(int frag_size) | |
582 | { | |
583 | int buf_size = frag_size - NET_SKB_PAD - NET_IP_ALIGN - | |
584 | SKB_DATA_ALIGN(sizeof(struct skb_shared_info)); | |
585 | ||
586 | WARN_ON(buf_size < MTK_MAX_RX_LENGTH); | |
587 | ||
588 | return buf_size; | |
589 | } | |
590 | ||
591 | static inline void mtk_rx_get_desc(struct mtk_rx_dma *rxd, | |
592 | struct mtk_rx_dma *dma_rxd) | |
593 | { | |
594 | rxd->rxd1 = READ_ONCE(dma_rxd->rxd1); | |
595 | rxd->rxd2 = READ_ONCE(dma_rxd->rxd2); | |
596 | rxd->rxd3 = READ_ONCE(dma_rxd->rxd3); | |
597 | rxd->rxd4 = READ_ONCE(dma_rxd->rxd4); | |
598 | } | |
599 | ||
600 | /* the qdma core needs scratch memory to be setup */ | |
601 | static int mtk_init_fq_dma(struct mtk_eth *eth) | |
602 | { | |
605e4fe4 | 603 | dma_addr_t phy_ring_tail; |
656e7052 JC |
604 | int cnt = MTK_DMA_SIZE; |
605 | dma_addr_t dma_addr; | |
606 | int i; | |
607 | ||
6c21da20 SW |
608 | eth->scratch_ring = dma_zalloc_coherent(eth->dev, |
609 | cnt * sizeof(struct mtk_tx_dma), | |
610 | ð->phy_scratch_ring, | |
611 | GFP_ATOMIC); | |
656e7052 JC |
612 | if (unlikely(!eth->scratch_ring)) |
613 | return -ENOMEM; | |
614 | ||
615 | eth->scratch_head = kcalloc(cnt, MTK_QDMA_PAGE_SIZE, | |
616 | GFP_KERNEL); | |
562c5a70 JC |
617 | if (unlikely(!eth->scratch_head)) |
618 | return -ENOMEM; | |
619 | ||
656e7052 JC |
620 | dma_addr = dma_map_single(eth->dev, |
621 | eth->scratch_head, cnt * MTK_QDMA_PAGE_SIZE, | |
622 | DMA_FROM_DEVICE); | |
623 | if (unlikely(dma_mapping_error(eth->dev, dma_addr))) | |
624 | return -ENOMEM; | |
625 | ||
605e4fe4 | 626 | phy_ring_tail = eth->phy_scratch_ring + |
656e7052 JC |
627 | (sizeof(struct mtk_tx_dma) * (cnt - 1)); |
628 | ||
629 | for (i = 0; i < cnt; i++) { | |
630 | eth->scratch_ring[i].txd1 = | |
631 | (dma_addr + (i * MTK_QDMA_PAGE_SIZE)); | |
632 | if (i < cnt - 1) | |
605e4fe4 | 633 | eth->scratch_ring[i].txd2 = (eth->phy_scratch_ring + |
656e7052 JC |
634 | ((i + 1) * sizeof(struct mtk_tx_dma))); |
635 | eth->scratch_ring[i].txd3 = TX_DMA_SDL(MTK_QDMA_PAGE_SIZE); | |
636 | } | |
637 | ||
605e4fe4 | 638 | mtk_w32(eth, eth->phy_scratch_ring, MTK_QDMA_FQ_HEAD); |
656e7052 JC |
639 | mtk_w32(eth, phy_ring_tail, MTK_QDMA_FQ_TAIL); |
640 | mtk_w32(eth, (cnt << 16) | cnt, MTK_QDMA_FQ_CNT); | |
641 | mtk_w32(eth, MTK_QDMA_PAGE_SIZE << 16, MTK_QDMA_FQ_BLEN); | |
642 | ||
643 | return 0; | |
644 | } | |
645 | ||
646 | static inline void *mtk_qdma_phys_to_virt(struct mtk_tx_ring *ring, u32 desc) | |
647 | { | |
648 | void *ret = ring->dma; | |
649 | ||
650 | return ret + (desc - ring->phys); | |
651 | } | |
652 | ||
653 | static inline struct mtk_tx_buf *mtk_desc_to_tx_buf(struct mtk_tx_ring *ring, | |
654 | struct mtk_tx_dma *txd) | |
655 | { | |
656 | int idx = txd - ring->dma; | |
657 | ||
658 | return &ring->buf[idx]; | |
659 | } | |
660 | ||
55a4e778 | 661 | static void mtk_tx_unmap(struct mtk_eth *eth, struct mtk_tx_buf *tx_buf) |
656e7052 JC |
662 | { |
663 | if (tx_buf->flags & MTK_TX_FLAGS_SINGLE0) { | |
55a4e778 | 664 | dma_unmap_single(eth->dev, |
656e7052 JC |
665 | dma_unmap_addr(tx_buf, dma_addr0), |
666 | dma_unmap_len(tx_buf, dma_len0), | |
667 | DMA_TO_DEVICE); | |
668 | } else if (tx_buf->flags & MTK_TX_FLAGS_PAGE0) { | |
55a4e778 | 669 | dma_unmap_page(eth->dev, |
656e7052 JC |
670 | dma_unmap_addr(tx_buf, dma_addr0), |
671 | dma_unmap_len(tx_buf, dma_len0), | |
672 | DMA_TO_DEVICE); | |
673 | } | |
674 | tx_buf->flags = 0; | |
675 | if (tx_buf->skb && | |
676 | (tx_buf->skb != (struct sk_buff *)MTK_DMA_DUMMY_DESC)) | |
677 | dev_kfree_skb_any(tx_buf->skb); | |
678 | tx_buf->skb = NULL; | |
679 | } | |
680 | ||
681 | static int mtk_tx_map(struct sk_buff *skb, struct net_device *dev, | |
682 | int tx_num, struct mtk_tx_ring *ring, bool gso) | |
683 | { | |
684 | struct mtk_mac *mac = netdev_priv(dev); | |
685 | struct mtk_eth *eth = mac->hw; | |
686 | struct mtk_tx_dma *itxd, *txd; | |
81d2dd09 | 687 | struct mtk_tx_buf *itx_buf, *tx_buf; |
656e7052 JC |
688 | dma_addr_t mapped_addr; |
689 | unsigned int nr_frags; | |
690 | int i, n_desc = 1; | |
c6f1dc4d | 691 | u32 txd4 = 0, fport; |
656e7052 JC |
692 | |
693 | itxd = ring->next_free; | |
694 | if (itxd == ring->last_free) | |
695 | return -ENOMEM; | |
696 | ||
697 | /* set the forward port */ | |
c6f1dc4d SW |
698 | fport = (mac->id + 1) << TX_DMA_FPORT_SHIFT; |
699 | txd4 |= fport; | |
656e7052 | 700 | |
81d2dd09 SW |
701 | itx_buf = mtk_desc_to_tx_buf(ring, itxd); |
702 | memset(itx_buf, 0, sizeof(*itx_buf)); | |
656e7052 JC |
703 | |
704 | if (gso) | |
705 | txd4 |= TX_DMA_TSO; | |
706 | ||
707 | /* TX Checksum offload */ | |
708 | if (skb->ip_summed == CHECKSUM_PARTIAL) | |
709 | txd4 |= TX_DMA_CHKSUM; | |
710 | ||
711 | /* VLAN header offload */ | |
712 | if (skb_vlan_tag_present(skb)) | |
713 | txd4 |= TX_DMA_INS_VLAN | skb_vlan_tag_get(skb); | |
714 | ||
55a4e778 | 715 | mapped_addr = dma_map_single(eth->dev, skb->data, |
656e7052 | 716 | skb_headlen(skb), DMA_TO_DEVICE); |
55a4e778 | 717 | if (unlikely(dma_mapping_error(eth->dev, mapped_addr))) |
656e7052 JC |
718 | return -ENOMEM; |
719 | ||
656e7052 | 720 | WRITE_ONCE(itxd->txd1, mapped_addr); |
81d2dd09 | 721 | itx_buf->flags |= MTK_TX_FLAGS_SINGLE0; |
134d2152 SW |
722 | itx_buf->flags |= (!mac->id) ? MTK_TX_FLAGS_FPORT0 : |
723 | MTK_TX_FLAGS_FPORT1; | |
81d2dd09 SW |
724 | dma_unmap_addr_set(itx_buf, dma_addr0, mapped_addr); |
725 | dma_unmap_len_set(itx_buf, dma_len0, skb_headlen(skb)); | |
656e7052 JC |
726 | |
727 | /* TX SG offload */ | |
728 | txd = itxd; | |
729 | nr_frags = skb_shinfo(skb)->nr_frags; | |
730 | for (i = 0; i < nr_frags; i++) { | |
731 | struct skb_frag_struct *frag = &skb_shinfo(skb)->frags[i]; | |
732 | unsigned int offset = 0; | |
733 | int frag_size = skb_frag_size(frag); | |
734 | ||
735 | while (frag_size) { | |
736 | bool last_frag = false; | |
737 | unsigned int frag_map_size; | |
738 | ||
739 | txd = mtk_qdma_phys_to_virt(ring, txd->txd2); | |
740 | if (txd == ring->last_free) | |
741 | goto err_dma; | |
742 | ||
743 | n_desc++; | |
744 | frag_map_size = min(frag_size, MTK_TX_DMA_BUF_LEN); | |
55a4e778 | 745 | mapped_addr = skb_frag_dma_map(eth->dev, frag, offset, |
656e7052 JC |
746 | frag_map_size, |
747 | DMA_TO_DEVICE); | |
55a4e778 | 748 | if (unlikely(dma_mapping_error(eth->dev, mapped_addr))) |
656e7052 JC |
749 | goto err_dma; |
750 | ||
751 | if (i == nr_frags - 1 && | |
752 | (frag_size - frag_map_size) == 0) | |
753 | last_frag = true; | |
754 | ||
755 | WRITE_ONCE(txd->txd1, mapped_addr); | |
756 | WRITE_ONCE(txd->txd3, (TX_DMA_SWC | | |
757 | TX_DMA_PLEN0(frag_map_size) | | |
369f0453 | 758 | last_frag * TX_DMA_LS0)); |
c6f1dc4d | 759 | WRITE_ONCE(txd->txd4, fport); |
656e7052 | 760 | |
656e7052 JC |
761 | tx_buf = mtk_desc_to_tx_buf(ring, txd); |
762 | memset(tx_buf, 0, sizeof(*tx_buf)); | |
81d2dd09 | 763 | tx_buf->skb = (struct sk_buff *)MTK_DMA_DUMMY_DESC; |
656e7052 | 764 | tx_buf->flags |= MTK_TX_FLAGS_PAGE0; |
134d2152 SW |
765 | tx_buf->flags |= (!mac->id) ? MTK_TX_FLAGS_FPORT0 : |
766 | MTK_TX_FLAGS_FPORT1; | |
767 | ||
656e7052 JC |
768 | dma_unmap_addr_set(tx_buf, dma_addr0, mapped_addr); |
769 | dma_unmap_len_set(tx_buf, dma_len0, frag_map_size); | |
770 | frag_size -= frag_map_size; | |
771 | offset += frag_map_size; | |
772 | } | |
773 | } | |
774 | ||
775 | /* store skb to cleanup */ | |
81d2dd09 | 776 | itx_buf->skb = skb; |
656e7052 JC |
777 | |
778 | WRITE_ONCE(itxd->txd4, txd4); | |
779 | WRITE_ONCE(itxd->txd3, (TX_DMA_SWC | TX_DMA_PLEN0(skb_headlen(skb)) | | |
780 | (!nr_frags * TX_DMA_LS0))); | |
781 | ||
656e7052 JC |
782 | netdev_sent_queue(dev, skb->len); |
783 | skb_tx_timestamp(skb); | |
784 | ||
785 | ring->next_free = mtk_qdma_phys_to_virt(ring, txd->txd2); | |
786 | atomic_sub(n_desc, &ring->free_count); | |
787 | ||
788 | /* make sure that all changes to the dma ring are flushed before we | |
789 | * continue | |
790 | */ | |
791 | wmb(); | |
792 | ||
793 | if (netif_xmit_stopped(netdev_get_tx_queue(dev, 0)) || !skb->xmit_more) | |
794 | mtk_w32(eth, txd->txd2, MTK_QTX_CTX_PTR); | |
795 | ||
796 | return 0; | |
797 | ||
798 | err_dma: | |
799 | do { | |
2fae723c | 800 | tx_buf = mtk_desc_to_tx_buf(ring, itxd); |
656e7052 JC |
801 | |
802 | /* unmap dma */ | |
55a4e778 | 803 | mtk_tx_unmap(eth, tx_buf); |
656e7052 JC |
804 | |
805 | itxd->txd3 = TX_DMA_LS0 | TX_DMA_OWNER_CPU; | |
806 | itxd = mtk_qdma_phys_to_virt(ring, itxd->txd2); | |
807 | } while (itxd != txd); | |
808 | ||
809 | return -ENOMEM; | |
810 | } | |
811 | ||
812 | static inline int mtk_cal_txd_req(struct sk_buff *skb) | |
813 | { | |
814 | int i, nfrags; | |
815 | struct skb_frag_struct *frag; | |
816 | ||
817 | nfrags = 1; | |
818 | if (skb_is_gso(skb)) { | |
819 | for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) { | |
820 | frag = &skb_shinfo(skb)->frags[i]; | |
821 | nfrags += DIV_ROUND_UP(frag->size, MTK_TX_DMA_BUF_LEN); | |
822 | } | |
823 | } else { | |
824 | nfrags += skb_shinfo(skb)->nr_frags; | |
825 | } | |
826 | ||
beeb4ca4 | 827 | return nfrags; |
656e7052 JC |
828 | } |
829 | ||
ad3cba98 JC |
830 | static int mtk_queue_stopped(struct mtk_eth *eth) |
831 | { | |
832 | int i; | |
833 | ||
834 | for (i = 0; i < MTK_MAC_COUNT; i++) { | |
835 | if (!eth->netdev[i]) | |
836 | continue; | |
837 | if (netif_queue_stopped(eth->netdev[i])) | |
838 | return 1; | |
839 | } | |
840 | ||
841 | return 0; | |
842 | } | |
843 | ||
13c822f6 JC |
844 | static void mtk_wake_queue(struct mtk_eth *eth) |
845 | { | |
846 | int i; | |
847 | ||
848 | for (i = 0; i < MTK_MAC_COUNT; i++) { | |
849 | if (!eth->netdev[i]) | |
850 | continue; | |
851 | netif_wake_queue(eth->netdev[i]); | |
852 | } | |
853 | } | |
854 | ||
855 | static void mtk_stop_queue(struct mtk_eth *eth) | |
856 | { | |
857 | int i; | |
858 | ||
859 | for (i = 0; i < MTK_MAC_COUNT; i++) { | |
860 | if (!eth->netdev[i]) | |
861 | continue; | |
862 | netif_stop_queue(eth->netdev[i]); | |
863 | } | |
864 | } | |
865 | ||
656e7052 JC |
866 | static int mtk_start_xmit(struct sk_buff *skb, struct net_device *dev) |
867 | { | |
868 | struct mtk_mac *mac = netdev_priv(dev); | |
869 | struct mtk_eth *eth = mac->hw; | |
870 | struct mtk_tx_ring *ring = ð->tx_ring; | |
871 | struct net_device_stats *stats = &dev->stats; | |
872 | bool gso = false; | |
873 | int tx_num; | |
874 | ||
34c2e4c9 JC |
875 | /* normally we can rely on the stack not calling this more than once, |
876 | * however we have 2 queues running on the same ring so we need to lock | |
877 | * the ring access | |
878 | */ | |
e3e9652a | 879 | spin_lock(ð->page_lock); |
34c2e4c9 | 880 | |
dce6fa42 SW |
881 | if (unlikely(test_bit(MTK_RESETTING, ð->state))) |
882 | goto drop; | |
883 | ||
656e7052 JC |
884 | tx_num = mtk_cal_txd_req(skb); |
885 | if (unlikely(atomic_read(&ring->free_count) <= tx_num)) { | |
13c822f6 | 886 | mtk_stop_queue(eth); |
656e7052 JC |
887 | netif_err(eth, tx_queued, dev, |
888 | "Tx Ring full when queue awake!\n"); | |
e3e9652a | 889 | spin_unlock(ð->page_lock); |
656e7052 JC |
890 | return NETDEV_TX_BUSY; |
891 | } | |
892 | ||
893 | /* TSO: fill MSS info in tcp checksum field */ | |
894 | if (skb_is_gso(skb)) { | |
895 | if (skb_cow_head(skb, 0)) { | |
896 | netif_warn(eth, tx_err, dev, | |
897 | "GSO expand head fail.\n"); | |
898 | goto drop; | |
899 | } | |
900 | ||
901 | if (skb_shinfo(skb)->gso_type & | |
902 | (SKB_GSO_TCPV4 | SKB_GSO_TCPV6)) { | |
903 | gso = true; | |
904 | tcp_hdr(skb)->check = htons(skb_shinfo(skb)->gso_size); | |
905 | } | |
906 | } | |
907 | ||
908 | if (mtk_tx_map(skb, dev, tx_num, ring, gso) < 0) | |
909 | goto drop; | |
910 | ||
82c6544d | 911 | if (unlikely(atomic_read(&ring->free_count) <= ring->thresh)) |
13c822f6 | 912 | mtk_stop_queue(eth); |
82c6544d | 913 | |
e3e9652a | 914 | spin_unlock(ð->page_lock); |
656e7052 JC |
915 | |
916 | return NETDEV_TX_OK; | |
917 | ||
918 | drop: | |
e3e9652a | 919 | spin_unlock(ð->page_lock); |
656e7052 | 920 | stats->tx_dropped++; |
81ad2b7d | 921 | dev_kfree_skb_any(skb); |
656e7052 JC |
922 | return NETDEV_TX_OK; |
923 | } | |
924 | ||
ee406810 NC |
925 | static struct mtk_rx_ring *mtk_get_rx_ring(struct mtk_eth *eth) |
926 | { | |
927 | int i; | |
928 | struct mtk_rx_ring *ring; | |
929 | int idx; | |
930 | ||
931 | if (!eth->hwlro) | |
932 | return ð->rx_ring[0]; | |
933 | ||
934 | for (i = 0; i < MTK_MAX_RX_RING_NUM; i++) { | |
935 | ring = ð->rx_ring[i]; | |
936 | idx = NEXT_RX_DESP_IDX(ring->calc_idx, ring->dma_size); | |
937 | if (ring->dma[idx].rxd2 & RX_DMA_DONE) { | |
938 | ring->calc_idx_update = true; | |
939 | return ring; | |
940 | } | |
941 | } | |
942 | ||
943 | return NULL; | |
944 | } | |
945 | ||
946 | static void mtk_update_rx_cpu_idx(struct mtk_eth *eth) | |
947 | { | |
948 | struct mtk_rx_ring *ring; | |
949 | int i; | |
950 | ||
951 | if (!eth->hwlro) { | |
952 | ring = ð->rx_ring[0]; | |
953 | mtk_w32(eth, ring->calc_idx, ring->crx_idx_reg); | |
954 | } else { | |
955 | for (i = 0; i < MTK_MAX_RX_RING_NUM; i++) { | |
956 | ring = ð->rx_ring[i]; | |
957 | if (ring->calc_idx_update) { | |
958 | ring->calc_idx_update = false; | |
959 | mtk_w32(eth, ring->calc_idx, ring->crx_idx_reg); | |
960 | } | |
961 | } | |
962 | } | |
963 | } | |
964 | ||
656e7052 | 965 | static int mtk_poll_rx(struct napi_struct *napi, int budget, |
eece71e8 | 966 | struct mtk_eth *eth) |
656e7052 | 967 | { |
ee406810 NC |
968 | struct mtk_rx_ring *ring; |
969 | int idx; | |
656e7052 JC |
970 | struct sk_buff *skb; |
971 | u8 *data, *new_data; | |
972 | struct mtk_rx_dma *rxd, trxd; | |
973 | int done = 0; | |
974 | ||
975 | while (done < budget) { | |
976 | struct net_device *netdev; | |
977 | unsigned int pktlen; | |
978 | dma_addr_t dma_addr; | |
979 | int mac = 0; | |
980 | ||
ee406810 NC |
981 | ring = mtk_get_rx_ring(eth); |
982 | if (unlikely(!ring)) | |
983 | goto rx_done; | |
984 | ||
985 | idx = NEXT_RX_DESP_IDX(ring->calc_idx, ring->dma_size); | |
656e7052 JC |
986 | rxd = &ring->dma[idx]; |
987 | data = ring->data[idx]; | |
988 | ||
989 | mtk_rx_get_desc(&trxd, rxd); | |
990 | if (!(trxd.rxd2 & RX_DMA_DONE)) | |
991 | break; | |
992 | ||
993 | /* find out which mac the packet come from. values start at 1 */ | |
994 | mac = (trxd.rxd4 >> RX_DMA_FPORT_SHIFT) & | |
995 | RX_DMA_FPORT_MASK; | |
996 | mac--; | |
997 | ||
6c7fce6f SW |
998 | if (unlikely(mac < 0 || mac >= MTK_MAC_COUNT || |
999 | !eth->netdev[mac])) | |
1000 | goto release_desc; | |
1001 | ||
656e7052 JC |
1002 | netdev = eth->netdev[mac]; |
1003 | ||
dce6fa42 SW |
1004 | if (unlikely(test_bit(MTK_RESETTING, ð->state))) |
1005 | goto release_desc; | |
1006 | ||
656e7052 JC |
1007 | /* alloc new buffer */ |
1008 | new_data = napi_alloc_frag(ring->frag_size); | |
1009 | if (unlikely(!new_data)) { | |
1010 | netdev->stats.rx_dropped++; | |
1011 | goto release_desc; | |
1012 | } | |
55a4e778 | 1013 | dma_addr = dma_map_single(eth->dev, |
656e7052 JC |
1014 | new_data + NET_SKB_PAD, |
1015 | ring->buf_size, | |
1016 | DMA_FROM_DEVICE); | |
55a4e778 | 1017 | if (unlikely(dma_mapping_error(eth->dev, dma_addr))) { |
656e7052 | 1018 | skb_free_frag(new_data); |
94321a9f | 1019 | netdev->stats.rx_dropped++; |
656e7052 JC |
1020 | goto release_desc; |
1021 | } | |
1022 | ||
1023 | /* receive data */ | |
1024 | skb = build_skb(data, ring->frag_size); | |
1025 | if (unlikely(!skb)) { | |
1b430799 | 1026 | skb_free_frag(new_data); |
94321a9f | 1027 | netdev->stats.rx_dropped++; |
656e7052 JC |
1028 | goto release_desc; |
1029 | } | |
1030 | skb_reserve(skb, NET_SKB_PAD + NET_IP_ALIGN); | |
1031 | ||
55a4e778 | 1032 | dma_unmap_single(eth->dev, trxd.rxd1, |
656e7052 JC |
1033 | ring->buf_size, DMA_FROM_DEVICE); |
1034 | pktlen = RX_DMA_GET_PLEN0(trxd.rxd2); | |
1035 | skb->dev = netdev; | |
1036 | skb_put(skb, pktlen); | |
1037 | if (trxd.rxd4 & RX_DMA_L4_VALID) | |
1038 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
1039 | else | |
1040 | skb_checksum_none_assert(skb); | |
1041 | skb->protocol = eth_type_trans(skb, netdev); | |
1042 | ||
1043 | if (netdev->features & NETIF_F_HW_VLAN_CTAG_RX && | |
1044 | RX_DMA_VID(trxd.rxd3)) | |
1045 | __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), | |
1046 | RX_DMA_VID(trxd.rxd3)); | |
a2d5e7b4 | 1047 | skb_record_rx_queue(skb, 0); |
656e7052 JC |
1048 | napi_gro_receive(napi, skb); |
1049 | ||
1050 | ring->data[idx] = new_data; | |
1051 | rxd->rxd1 = (unsigned int)dma_addr; | |
1052 | ||
1053 | release_desc: | |
1054 | rxd->rxd2 = RX_DMA_PLEN0(ring->buf_size); | |
1055 | ||
1056 | ring->calc_idx = idx; | |
635372ad | 1057 | |
656e7052 JC |
1058 | done++; |
1059 | } | |
1060 | ||
ee406810 | 1061 | rx_done: |
41156cea SW |
1062 | if (done) { |
1063 | /* make sure that all changes to the dma ring are flushed before | |
1064 | * we continue | |
1065 | */ | |
1066 | wmb(); | |
ee406810 | 1067 | mtk_update_rx_cpu_idx(eth); |
41156cea | 1068 | } |
656e7052 JC |
1069 | |
1070 | return done; | |
1071 | } | |
1072 | ||
80673029 | 1073 | static int mtk_poll_tx(struct mtk_eth *eth, int budget) |
656e7052 JC |
1074 | { |
1075 | struct mtk_tx_ring *ring = ð->tx_ring; | |
1076 | struct mtk_tx_dma *desc; | |
1077 | struct sk_buff *skb; | |
1078 | struct mtk_tx_buf *tx_buf; | |
80673029 | 1079 | unsigned int done[MTK_MAX_DEVS]; |
656e7052 JC |
1080 | unsigned int bytes[MTK_MAX_DEVS]; |
1081 | u32 cpu, dma; | |
80673029 | 1082 | int total = 0, i; |
656e7052 JC |
1083 | |
1084 | memset(done, 0, sizeof(done)); | |
1085 | memset(bytes, 0, sizeof(bytes)); | |
1086 | ||
1087 | cpu = mtk_r32(eth, MTK_QTX_CRX_PTR); | |
1088 | dma = mtk_r32(eth, MTK_QTX_DRX_PTR); | |
1089 | ||
1090 | desc = mtk_qdma_phys_to_virt(ring, cpu); | |
1091 | ||
1092 | while ((cpu != dma) && budget) { | |
1093 | u32 next_cpu = desc->txd2; | |
134d2152 | 1094 | int mac = 0; |
656e7052 JC |
1095 | |
1096 | desc = mtk_qdma_phys_to_virt(ring, desc->txd2); | |
1097 | if ((desc->txd3 & TX_DMA_OWNER_CPU) == 0) | |
1098 | break; | |
1099 | ||
656e7052 | 1100 | tx_buf = mtk_desc_to_tx_buf(ring, desc); |
134d2152 SW |
1101 | if (tx_buf->flags & MTK_TX_FLAGS_FPORT1) |
1102 | mac = 1; | |
1103 | ||
656e7052 | 1104 | skb = tx_buf->skb; |
f03b06f3 | 1105 | if (!skb) |
656e7052 | 1106 | break; |
656e7052 JC |
1107 | |
1108 | if (skb != (struct sk_buff *)MTK_DMA_DUMMY_DESC) { | |
1109 | bytes[mac] += skb->len; | |
1110 | done[mac]++; | |
1111 | budget--; | |
1112 | } | |
55a4e778 | 1113 | mtk_tx_unmap(eth, tx_buf); |
656e7052 | 1114 | |
656e7052 JC |
1115 | ring->last_free = desc; |
1116 | atomic_inc(&ring->free_count); | |
1117 | ||
1118 | cpu = next_cpu; | |
1119 | } | |
1120 | ||
1121 | mtk_w32(eth, cpu, MTK_QTX_CRX_PTR); | |
1122 | ||
1123 | for (i = 0; i < MTK_MAC_COUNT; i++) { | |
1124 | if (!eth->netdev[i] || !done[i]) | |
1125 | continue; | |
1126 | netdev_completed_queue(eth->netdev[i], done[i], bytes[i]); | |
1127 | total += done[i]; | |
1128 | } | |
1129 | ||
ad3cba98 JC |
1130 | if (mtk_queue_stopped(eth) && |
1131 | (atomic_read(&ring->free_count) > ring->thresh)) | |
13c822f6 | 1132 | mtk_wake_queue(eth); |
656e7052 JC |
1133 | |
1134 | return total; | |
1135 | } | |
1136 | ||
80673029 | 1137 | static void mtk_handle_status_irq(struct mtk_eth *eth) |
656e7052 | 1138 | { |
80673029 | 1139 | u32 status2 = mtk_r32(eth, MTK_INT_STATUS2); |
656e7052 | 1140 | |
eece71e8 | 1141 | if (unlikely(status2 & (MTK_GDM1_AF | MTK_GDM2_AF))) { |
656e7052 | 1142 | mtk_stats_update(eth); |
eece71e8 JC |
1143 | mtk_w32(eth, (MTK_GDM1_AF | MTK_GDM2_AF), |
1144 | MTK_INT_STATUS2); | |
656e7052 | 1145 | } |
80673029 JC |
1146 | } |
1147 | ||
1148 | static int mtk_napi_tx(struct napi_struct *napi, int budget) | |
1149 | { | |
1150 | struct mtk_eth *eth = container_of(napi, struct mtk_eth, tx_napi); | |
1151 | u32 status, mask; | |
1152 | int tx_done = 0; | |
1153 | ||
1154 | mtk_handle_status_irq(eth); | |
1155 | mtk_w32(eth, MTK_TX_DONE_INT, MTK_QMTK_INT_STATUS); | |
1156 | tx_done = mtk_poll_tx(eth, budget); | |
1157 | ||
1158 | if (unlikely(netif_msg_intr(eth))) { | |
1159 | status = mtk_r32(eth, MTK_QMTK_INT_STATUS); | |
1160 | mask = mtk_r32(eth, MTK_QDMA_INT_MASK); | |
1161 | dev_info(eth->dev, | |
1162 | "done tx %d, intr 0x%08x/0x%x\n", | |
1163 | tx_done, status, mask); | |
1164 | } | |
1165 | ||
1166 | if (tx_done == budget) | |
1167 | return budget; | |
1168 | ||
1169 | status = mtk_r32(eth, MTK_QMTK_INT_STATUS); | |
1170 | if (status & MTK_TX_DONE_INT) | |
1171 | return budget; | |
1172 | ||
1173 | napi_complete(napi); | |
5cce0322 | 1174 | mtk_tx_irq_enable(eth, MTK_TX_DONE_INT); |
80673029 JC |
1175 | |
1176 | return tx_done; | |
1177 | } | |
1178 | ||
1179 | static int mtk_napi_rx(struct napi_struct *napi, int budget) | |
1180 | { | |
1181 | struct mtk_eth *eth = container_of(napi, struct mtk_eth, rx_napi); | |
1182 | u32 status, mask; | |
1183 | int rx_done = 0; | |
41156cea | 1184 | int remain_budget = budget; |
80673029 JC |
1185 | |
1186 | mtk_handle_status_irq(eth); | |
41156cea SW |
1187 | |
1188 | poll_again: | |
bacfd110 | 1189 | mtk_w32(eth, MTK_RX_DONE_INT, MTK_PDMA_INT_STATUS); |
41156cea | 1190 | rx_done = mtk_poll_rx(napi, remain_budget, eth); |
656e7052 JC |
1191 | |
1192 | if (unlikely(netif_msg_intr(eth))) { | |
bacfd110 NC |
1193 | status = mtk_r32(eth, MTK_PDMA_INT_STATUS); |
1194 | mask = mtk_r32(eth, MTK_PDMA_INT_MASK); | |
80673029 JC |
1195 | dev_info(eth->dev, |
1196 | "done rx %d, intr 0x%08x/0x%x\n", | |
1197 | rx_done, status, mask); | |
656e7052 | 1198 | } |
41156cea | 1199 | if (rx_done == remain_budget) |
656e7052 JC |
1200 | return budget; |
1201 | ||
bacfd110 | 1202 | status = mtk_r32(eth, MTK_PDMA_INT_STATUS); |
41156cea SW |
1203 | if (status & MTK_RX_DONE_INT) { |
1204 | remain_budget -= rx_done; | |
1205 | goto poll_again; | |
1206 | } | |
656e7052 | 1207 | napi_complete(napi); |
5cce0322 | 1208 | mtk_rx_irq_enable(eth, MTK_RX_DONE_INT); |
656e7052 | 1209 | |
41156cea | 1210 | return rx_done + budget - remain_budget; |
656e7052 JC |
1211 | } |
1212 | ||
1213 | static int mtk_tx_alloc(struct mtk_eth *eth) | |
1214 | { | |
1215 | struct mtk_tx_ring *ring = ð->tx_ring; | |
1216 | int i, sz = sizeof(*ring->dma); | |
1217 | ||
1218 | ring->buf = kcalloc(MTK_DMA_SIZE, sizeof(*ring->buf), | |
1219 | GFP_KERNEL); | |
1220 | if (!ring->buf) | |
1221 | goto no_tx_mem; | |
1222 | ||
0a78c380 Y |
1223 | ring->dma = dma_zalloc_coherent(eth->dev, MTK_DMA_SIZE * sz, |
1224 | &ring->phys, GFP_ATOMIC); | |
656e7052 JC |
1225 | if (!ring->dma) |
1226 | goto no_tx_mem; | |
1227 | ||
656e7052 JC |
1228 | for (i = 0; i < MTK_DMA_SIZE; i++) { |
1229 | int next = (i + 1) % MTK_DMA_SIZE; | |
1230 | u32 next_ptr = ring->phys + next * sz; | |
1231 | ||
1232 | ring->dma[i].txd2 = next_ptr; | |
1233 | ring->dma[i].txd3 = TX_DMA_LS0 | TX_DMA_OWNER_CPU; | |
1234 | } | |
1235 | ||
1236 | atomic_set(&ring->free_count, MTK_DMA_SIZE - 2); | |
1237 | ring->next_free = &ring->dma[0]; | |
12c97c13 | 1238 | ring->last_free = &ring->dma[MTK_DMA_SIZE - 1]; |
04698ccc | 1239 | ring->thresh = MAX_SKB_FRAGS; |
656e7052 JC |
1240 | |
1241 | /* make sure that all changes to the dma ring are flushed before we | |
1242 | * continue | |
1243 | */ | |
1244 | wmb(); | |
1245 | ||
1246 | mtk_w32(eth, ring->phys, MTK_QTX_CTX_PTR); | |
1247 | mtk_w32(eth, ring->phys, MTK_QTX_DTX_PTR); | |
1248 | mtk_w32(eth, | |
1249 | ring->phys + ((MTK_DMA_SIZE - 1) * sz), | |
1250 | MTK_QTX_CRX_PTR); | |
1251 | mtk_w32(eth, | |
1252 | ring->phys + ((MTK_DMA_SIZE - 1) * sz), | |
1253 | MTK_QTX_DRX_PTR); | |
bacfd110 | 1254 | mtk_w32(eth, (QDMA_RES_THRES << 8) | QDMA_RES_THRES, MTK_QTX_CFG(0)); |
656e7052 JC |
1255 | |
1256 | return 0; | |
1257 | ||
1258 | no_tx_mem: | |
1259 | return -ENOMEM; | |
1260 | } | |
1261 | ||
1262 | static void mtk_tx_clean(struct mtk_eth *eth) | |
1263 | { | |
1264 | struct mtk_tx_ring *ring = ð->tx_ring; | |
1265 | int i; | |
1266 | ||
1267 | if (ring->buf) { | |
1268 | for (i = 0; i < MTK_DMA_SIZE; i++) | |
55a4e778 | 1269 | mtk_tx_unmap(eth, &ring->buf[i]); |
656e7052 JC |
1270 | kfree(ring->buf); |
1271 | ring->buf = NULL; | |
1272 | } | |
1273 | ||
1274 | if (ring->dma) { | |
1275 | dma_free_coherent(eth->dev, | |
1276 | MTK_DMA_SIZE * sizeof(*ring->dma), | |
1277 | ring->dma, | |
1278 | ring->phys); | |
1279 | ring->dma = NULL; | |
1280 | } | |
1281 | } | |
1282 | ||
ee406810 | 1283 | static int mtk_rx_alloc(struct mtk_eth *eth, int ring_no, int rx_flag) |
656e7052 | 1284 | { |
6427dc1d | 1285 | struct mtk_rx_ring *ring; |
ee406810 | 1286 | int rx_data_len, rx_dma_size; |
656e7052 | 1287 | int i; |
6427dc1d JC |
1288 | u32 offset = 0; |
1289 | ||
1290 | if (rx_flag == MTK_RX_FLAGS_QDMA) { | |
1291 | if (ring_no) | |
1292 | return -EINVAL; | |
1293 | ring = ð->rx_ring_qdma; | |
1294 | offset = 0x1000; | |
1295 | } else { | |
1296 | ring = ð->rx_ring[ring_no]; | |
1297 | } | |
656e7052 | 1298 | |
ee406810 NC |
1299 | if (rx_flag == MTK_RX_FLAGS_HWLRO) { |
1300 | rx_data_len = MTK_MAX_LRO_RX_LENGTH; | |
1301 | rx_dma_size = MTK_HW_LRO_DMA_SIZE; | |
1302 | } else { | |
1303 | rx_data_len = ETH_DATA_LEN; | |
1304 | rx_dma_size = MTK_DMA_SIZE; | |
1305 | } | |
1306 | ||
1307 | ring->frag_size = mtk_max_frag_size(rx_data_len); | |
656e7052 | 1308 | ring->buf_size = mtk_max_buf_size(ring->frag_size); |
ee406810 | 1309 | ring->data = kcalloc(rx_dma_size, sizeof(*ring->data), |
656e7052 JC |
1310 | GFP_KERNEL); |
1311 | if (!ring->data) | |
1312 | return -ENOMEM; | |
1313 | ||
ee406810 | 1314 | for (i = 0; i < rx_dma_size; i++) { |
656e7052 JC |
1315 | ring->data[i] = netdev_alloc_frag(ring->frag_size); |
1316 | if (!ring->data[i]) | |
1317 | return -ENOMEM; | |
1318 | } | |
1319 | ||
6c21da20 SW |
1320 | ring->dma = dma_zalloc_coherent(eth->dev, |
1321 | rx_dma_size * sizeof(*ring->dma), | |
1322 | &ring->phys, GFP_ATOMIC); | |
656e7052 JC |
1323 | if (!ring->dma) |
1324 | return -ENOMEM; | |
1325 | ||
ee406810 | 1326 | for (i = 0; i < rx_dma_size; i++) { |
656e7052 JC |
1327 | dma_addr_t dma_addr = dma_map_single(eth->dev, |
1328 | ring->data[i] + NET_SKB_PAD, | |
1329 | ring->buf_size, | |
1330 | DMA_FROM_DEVICE); | |
1331 | if (unlikely(dma_mapping_error(eth->dev, dma_addr))) | |
1332 | return -ENOMEM; | |
1333 | ring->dma[i].rxd1 = (unsigned int)dma_addr; | |
1334 | ||
1335 | ring->dma[i].rxd2 = RX_DMA_PLEN0(ring->buf_size); | |
1336 | } | |
ee406810 NC |
1337 | ring->dma_size = rx_dma_size; |
1338 | ring->calc_idx_update = false; | |
1339 | ring->calc_idx = rx_dma_size - 1; | |
1340 | ring->crx_idx_reg = MTK_PRX_CRX_IDX_CFG(ring_no); | |
656e7052 JC |
1341 | /* make sure that all changes to the dma ring are flushed before we |
1342 | * continue | |
1343 | */ | |
1344 | wmb(); | |
1345 | ||
6427dc1d JC |
1346 | mtk_w32(eth, ring->phys, MTK_PRX_BASE_PTR_CFG(ring_no) + offset); |
1347 | mtk_w32(eth, rx_dma_size, MTK_PRX_MAX_CNT_CFG(ring_no) + offset); | |
1348 | mtk_w32(eth, ring->calc_idx, ring->crx_idx_reg + offset); | |
1349 | mtk_w32(eth, MTK_PST_DRX_IDX_CFG(ring_no), MTK_PDMA_RST_IDX + offset); | |
656e7052 JC |
1350 | |
1351 | return 0; | |
1352 | } | |
1353 | ||
6427dc1d | 1354 | static void mtk_rx_clean(struct mtk_eth *eth, struct mtk_rx_ring *ring) |
656e7052 | 1355 | { |
656e7052 JC |
1356 | int i; |
1357 | ||
1358 | if (ring->data && ring->dma) { | |
ee406810 | 1359 | for (i = 0; i < ring->dma_size; i++) { |
656e7052 JC |
1360 | if (!ring->data[i]) |
1361 | continue; | |
1362 | if (!ring->dma[i].rxd1) | |
1363 | continue; | |
1364 | dma_unmap_single(eth->dev, | |
1365 | ring->dma[i].rxd1, | |
1366 | ring->buf_size, | |
1367 | DMA_FROM_DEVICE); | |
1368 | skb_free_frag(ring->data[i]); | |
1369 | } | |
1370 | kfree(ring->data); | |
1371 | ring->data = NULL; | |
1372 | } | |
1373 | ||
1374 | if (ring->dma) { | |
1375 | dma_free_coherent(eth->dev, | |
ee406810 | 1376 | ring->dma_size * sizeof(*ring->dma), |
656e7052 JC |
1377 | ring->dma, |
1378 | ring->phys); | |
1379 | ring->dma = NULL; | |
1380 | } | |
1381 | } | |
1382 | ||
ee406810 NC |
1383 | static int mtk_hwlro_rx_init(struct mtk_eth *eth) |
1384 | { | |
1385 | int i; | |
1386 | u32 ring_ctrl_dw1 = 0, ring_ctrl_dw2 = 0, ring_ctrl_dw3 = 0; | |
1387 | u32 lro_ctrl_dw0 = 0, lro_ctrl_dw3 = 0; | |
1388 | ||
1389 | /* set LRO rings to auto-learn modes */ | |
1390 | ring_ctrl_dw2 |= MTK_RING_AUTO_LERAN_MODE; | |
1391 | ||
1392 | /* validate LRO ring */ | |
1393 | ring_ctrl_dw2 |= MTK_RING_VLD; | |
1394 | ||
1395 | /* set AGE timer (unit: 20us) */ | |
1396 | ring_ctrl_dw2 |= MTK_RING_AGE_TIME_H; | |
1397 | ring_ctrl_dw1 |= MTK_RING_AGE_TIME_L; | |
1398 | ||
1399 | /* set max AGG timer (unit: 20us) */ | |
1400 | ring_ctrl_dw2 |= MTK_RING_MAX_AGG_TIME; | |
1401 | ||
1402 | /* set max LRO AGG count */ | |
1403 | ring_ctrl_dw2 |= MTK_RING_MAX_AGG_CNT_L; | |
1404 | ring_ctrl_dw3 |= MTK_RING_MAX_AGG_CNT_H; | |
1405 | ||
1406 | for (i = 1; i < MTK_MAX_RX_RING_NUM; i++) { | |
1407 | mtk_w32(eth, ring_ctrl_dw1, MTK_LRO_CTRL_DW1_CFG(i)); | |
1408 | mtk_w32(eth, ring_ctrl_dw2, MTK_LRO_CTRL_DW2_CFG(i)); | |
1409 | mtk_w32(eth, ring_ctrl_dw3, MTK_LRO_CTRL_DW3_CFG(i)); | |
1410 | } | |
1411 | ||
1412 | /* IPv4 checksum update enable */ | |
1413 | lro_ctrl_dw0 |= MTK_L3_CKS_UPD_EN; | |
1414 | ||
1415 | /* switch priority comparison to packet count mode */ | |
1416 | lro_ctrl_dw0 |= MTK_LRO_ALT_PKT_CNT_MODE; | |
1417 | ||
1418 | /* bandwidth threshold setting */ | |
1419 | mtk_w32(eth, MTK_HW_LRO_BW_THRE, MTK_PDMA_LRO_CTRL_DW2); | |
1420 | ||
1421 | /* auto-learn score delta setting */ | |
1422 | mtk_w32(eth, MTK_HW_LRO_REPLACE_DELTA, MTK_PDMA_LRO_ALT_SCORE_DELTA); | |
1423 | ||
1424 | /* set refresh timer for altering flows to 1 sec. (unit: 20us) */ | |
1425 | mtk_w32(eth, (MTK_HW_LRO_TIMER_UNIT << 16) | MTK_HW_LRO_REFRESH_TIME, | |
1426 | MTK_PDMA_LRO_ALT_REFRESH_TIMER); | |
1427 | ||
1428 | /* set HW LRO mode & the max aggregation count for rx packets */ | |
1429 | lro_ctrl_dw3 |= MTK_ADMA_MODE | (MTK_HW_LRO_MAX_AGG_CNT & 0xff); | |
1430 | ||
1431 | /* the minimal remaining room of SDL0 in RXD for lro aggregation */ | |
1432 | lro_ctrl_dw3 |= MTK_LRO_MIN_RXD_SDL; | |
1433 | ||
1434 | /* enable HW LRO */ | |
1435 | lro_ctrl_dw0 |= MTK_LRO_EN; | |
1436 | ||
1437 | mtk_w32(eth, lro_ctrl_dw3, MTK_PDMA_LRO_CTRL_DW3); | |
1438 | mtk_w32(eth, lro_ctrl_dw0, MTK_PDMA_LRO_CTRL_DW0); | |
1439 | ||
1440 | return 0; | |
1441 | } | |
1442 | ||
1443 | static void mtk_hwlro_rx_uninit(struct mtk_eth *eth) | |
1444 | { | |
1445 | int i; | |
1446 | u32 val; | |
1447 | ||
1448 | /* relinquish lro rings, flush aggregated packets */ | |
1449 | mtk_w32(eth, MTK_LRO_RING_RELINQUISH_REQ, MTK_PDMA_LRO_CTRL_DW0); | |
1450 | ||
1451 | /* wait for relinquishments done */ | |
1452 | for (i = 0; i < 10; i++) { | |
1453 | val = mtk_r32(eth, MTK_PDMA_LRO_CTRL_DW0); | |
1454 | if (val & MTK_LRO_RING_RELINQUISH_DONE) { | |
1455 | msleep(20); | |
1456 | continue; | |
1457 | } | |
ca3ba106 | 1458 | break; |
ee406810 NC |
1459 | } |
1460 | ||
1461 | /* invalidate lro rings */ | |
1462 | for (i = 1; i < MTK_MAX_RX_RING_NUM; i++) | |
1463 | mtk_w32(eth, 0, MTK_LRO_CTRL_DW2_CFG(i)); | |
1464 | ||
1465 | /* disable HW LRO */ | |
1466 | mtk_w32(eth, 0, MTK_PDMA_LRO_CTRL_DW0); | |
1467 | } | |
1468 | ||
7aab747e NC |
1469 | static void mtk_hwlro_val_ipaddr(struct mtk_eth *eth, int idx, __be32 ip) |
1470 | { | |
1471 | u32 reg_val; | |
1472 | ||
1473 | reg_val = mtk_r32(eth, MTK_LRO_CTRL_DW2_CFG(idx)); | |
1474 | ||
1475 | /* invalidate the IP setting */ | |
1476 | mtk_w32(eth, (reg_val & ~MTK_RING_MYIP_VLD), MTK_LRO_CTRL_DW2_CFG(idx)); | |
1477 | ||
1478 | mtk_w32(eth, ip, MTK_LRO_DIP_DW0_CFG(idx)); | |
1479 | ||
1480 | /* validate the IP setting */ | |
1481 | mtk_w32(eth, (reg_val | MTK_RING_MYIP_VLD), MTK_LRO_CTRL_DW2_CFG(idx)); | |
1482 | } | |
1483 | ||
1484 | static void mtk_hwlro_inval_ipaddr(struct mtk_eth *eth, int idx) | |
1485 | { | |
1486 | u32 reg_val; | |
1487 | ||
1488 | reg_val = mtk_r32(eth, MTK_LRO_CTRL_DW2_CFG(idx)); | |
1489 | ||
1490 | /* invalidate the IP setting */ | |
1491 | mtk_w32(eth, (reg_val & ~MTK_RING_MYIP_VLD), MTK_LRO_CTRL_DW2_CFG(idx)); | |
1492 | ||
1493 | mtk_w32(eth, 0, MTK_LRO_DIP_DW0_CFG(idx)); | |
1494 | } | |
1495 | ||
1496 | static int mtk_hwlro_get_ip_cnt(struct mtk_mac *mac) | |
1497 | { | |
1498 | int cnt = 0; | |
1499 | int i; | |
1500 | ||
1501 | for (i = 0; i < MTK_MAX_LRO_IP_CNT; i++) { | |
1502 | if (mac->hwlro_ip[i]) | |
1503 | cnt++; | |
1504 | } | |
1505 | ||
1506 | return cnt; | |
1507 | } | |
1508 | ||
1509 | static int mtk_hwlro_add_ipaddr(struct net_device *dev, | |
1510 | struct ethtool_rxnfc *cmd) | |
1511 | { | |
1512 | struct ethtool_rx_flow_spec *fsp = | |
1513 | (struct ethtool_rx_flow_spec *)&cmd->fs; | |
1514 | struct mtk_mac *mac = netdev_priv(dev); | |
1515 | struct mtk_eth *eth = mac->hw; | |
1516 | int hwlro_idx; | |
1517 | ||
1518 | if ((fsp->flow_type != TCP_V4_FLOW) || | |
1519 | (!fsp->h_u.tcp_ip4_spec.ip4dst) || | |
1520 | (fsp->location > 1)) | |
1521 | return -EINVAL; | |
1522 | ||
1523 | mac->hwlro_ip[fsp->location] = htonl(fsp->h_u.tcp_ip4_spec.ip4dst); | |
1524 | hwlro_idx = (mac->id * MTK_MAX_LRO_IP_CNT) + fsp->location; | |
1525 | ||
1526 | mac->hwlro_ip_cnt = mtk_hwlro_get_ip_cnt(mac); | |
1527 | ||
1528 | mtk_hwlro_val_ipaddr(eth, hwlro_idx, mac->hwlro_ip[fsp->location]); | |
1529 | ||
1530 | return 0; | |
1531 | } | |
1532 | ||
1533 | static int mtk_hwlro_del_ipaddr(struct net_device *dev, | |
1534 | struct ethtool_rxnfc *cmd) | |
1535 | { | |
1536 | struct ethtool_rx_flow_spec *fsp = | |
1537 | (struct ethtool_rx_flow_spec *)&cmd->fs; | |
1538 | struct mtk_mac *mac = netdev_priv(dev); | |
1539 | struct mtk_eth *eth = mac->hw; | |
1540 | int hwlro_idx; | |
1541 | ||
1542 | if (fsp->location > 1) | |
1543 | return -EINVAL; | |
1544 | ||
1545 | mac->hwlro_ip[fsp->location] = 0; | |
1546 | hwlro_idx = (mac->id * MTK_MAX_LRO_IP_CNT) + fsp->location; | |
1547 | ||
1548 | mac->hwlro_ip_cnt = mtk_hwlro_get_ip_cnt(mac); | |
1549 | ||
1550 | mtk_hwlro_inval_ipaddr(eth, hwlro_idx); | |
1551 | ||
1552 | return 0; | |
1553 | } | |
1554 | ||
1555 | static void mtk_hwlro_netdev_disable(struct net_device *dev) | |
1556 | { | |
1557 | struct mtk_mac *mac = netdev_priv(dev); | |
1558 | struct mtk_eth *eth = mac->hw; | |
1559 | int i, hwlro_idx; | |
1560 | ||
1561 | for (i = 0; i < MTK_MAX_LRO_IP_CNT; i++) { | |
1562 | mac->hwlro_ip[i] = 0; | |
1563 | hwlro_idx = (mac->id * MTK_MAX_LRO_IP_CNT) + i; | |
1564 | ||
1565 | mtk_hwlro_inval_ipaddr(eth, hwlro_idx); | |
1566 | } | |
1567 | ||
1568 | mac->hwlro_ip_cnt = 0; | |
1569 | } | |
1570 | ||
1571 | static int mtk_hwlro_get_fdir_entry(struct net_device *dev, | |
1572 | struct ethtool_rxnfc *cmd) | |
1573 | { | |
1574 | struct mtk_mac *mac = netdev_priv(dev); | |
1575 | struct ethtool_rx_flow_spec *fsp = | |
1576 | (struct ethtool_rx_flow_spec *)&cmd->fs; | |
1577 | ||
1578 | /* only tcp dst ipv4 is meaningful, others are meaningless */ | |
1579 | fsp->flow_type = TCP_V4_FLOW; | |
1580 | fsp->h_u.tcp_ip4_spec.ip4dst = ntohl(mac->hwlro_ip[fsp->location]); | |
1581 | fsp->m_u.tcp_ip4_spec.ip4dst = 0; | |
1582 | ||
1583 | fsp->h_u.tcp_ip4_spec.ip4src = 0; | |
1584 | fsp->m_u.tcp_ip4_spec.ip4src = 0xffffffff; | |
1585 | fsp->h_u.tcp_ip4_spec.psrc = 0; | |
1586 | fsp->m_u.tcp_ip4_spec.psrc = 0xffff; | |
1587 | fsp->h_u.tcp_ip4_spec.pdst = 0; | |
1588 | fsp->m_u.tcp_ip4_spec.pdst = 0xffff; | |
1589 | fsp->h_u.tcp_ip4_spec.tos = 0; | |
1590 | fsp->m_u.tcp_ip4_spec.tos = 0xff; | |
1591 | ||
1592 | return 0; | |
1593 | } | |
1594 | ||
1595 | static int mtk_hwlro_get_fdir_all(struct net_device *dev, | |
1596 | struct ethtool_rxnfc *cmd, | |
1597 | u32 *rule_locs) | |
1598 | { | |
1599 | struct mtk_mac *mac = netdev_priv(dev); | |
1600 | int cnt = 0; | |
1601 | int i; | |
1602 | ||
1603 | for (i = 0; i < MTK_MAX_LRO_IP_CNT; i++) { | |
1604 | if (mac->hwlro_ip[i]) { | |
1605 | rule_locs[cnt] = i; | |
1606 | cnt++; | |
1607 | } | |
1608 | } | |
1609 | ||
1610 | cmd->rule_cnt = cnt; | |
1611 | ||
1612 | return 0; | |
1613 | } | |
1614 | ||
1615 | static netdev_features_t mtk_fix_features(struct net_device *dev, | |
1616 | netdev_features_t features) | |
1617 | { | |
1618 | if (!(features & NETIF_F_LRO)) { | |
1619 | struct mtk_mac *mac = netdev_priv(dev); | |
1620 | int ip_cnt = mtk_hwlro_get_ip_cnt(mac); | |
1621 | ||
1622 | if (ip_cnt) { | |
1623 | netdev_info(dev, "RX flow is programmed, LRO should keep on\n"); | |
1624 | ||
1625 | features |= NETIF_F_LRO; | |
1626 | } | |
1627 | } | |
1628 | ||
1629 | return features; | |
1630 | } | |
1631 | ||
1632 | static int mtk_set_features(struct net_device *dev, netdev_features_t features) | |
1633 | { | |
1634 | int err = 0; | |
1635 | ||
1636 | if (!((dev->features ^ features) & NETIF_F_LRO)) | |
1637 | return 0; | |
1638 | ||
1639 | if (!(features & NETIF_F_LRO)) | |
1640 | mtk_hwlro_netdev_disable(dev); | |
1641 | ||
1642 | return err; | |
1643 | } | |
1644 | ||
656e7052 JC |
1645 | /* wait for DMA to finish whatever it is doing before we start using it again */ |
1646 | static int mtk_dma_busy_wait(struct mtk_eth *eth) | |
1647 | { | |
1648 | unsigned long t_start = jiffies; | |
1649 | ||
1650 | while (1) { | |
1651 | if (!(mtk_r32(eth, MTK_QDMA_GLO_CFG) & | |
1652 | (MTK_RX_DMA_BUSY | MTK_TX_DMA_BUSY))) | |
1653 | return 0; | |
1654 | if (time_after(jiffies, t_start + MTK_DMA_BUSY_TIMEOUT)) | |
1655 | break; | |
1656 | } | |
1657 | ||
1658 | dev_err(eth->dev, "DMA init timeout\n"); | |
1659 | return -1; | |
1660 | } | |
1661 | ||
1662 | static int mtk_dma_init(struct mtk_eth *eth) | |
1663 | { | |
1664 | int err; | |
ee406810 | 1665 | u32 i; |
656e7052 JC |
1666 | |
1667 | if (mtk_dma_busy_wait(eth)) | |
1668 | return -EBUSY; | |
1669 | ||
1670 | /* QDMA needs scratch memory for internal reordering of the | |
1671 | * descriptors | |
1672 | */ | |
1673 | err = mtk_init_fq_dma(eth); | |
1674 | if (err) | |
1675 | return err; | |
1676 | ||
1677 | err = mtk_tx_alloc(eth); | |
1678 | if (err) | |
1679 | return err; | |
1680 | ||
6427dc1d JC |
1681 | err = mtk_rx_alloc(eth, 0, MTK_RX_FLAGS_QDMA); |
1682 | if (err) | |
1683 | return err; | |
1684 | ||
ee406810 | 1685 | err = mtk_rx_alloc(eth, 0, MTK_RX_FLAGS_NORMAL); |
656e7052 JC |
1686 | if (err) |
1687 | return err; | |
1688 | ||
ee406810 NC |
1689 | if (eth->hwlro) { |
1690 | for (i = 1; i < MTK_MAX_RX_RING_NUM; i++) { | |
1691 | err = mtk_rx_alloc(eth, i, MTK_RX_FLAGS_HWLRO); | |
1692 | if (err) | |
1693 | return err; | |
1694 | } | |
1695 | err = mtk_hwlro_rx_init(eth); | |
1696 | if (err) | |
1697 | return err; | |
1698 | } | |
1699 | ||
656e7052 JC |
1700 | /* Enable random early drop and set drop threshold automatically */ |
1701 | mtk_w32(eth, FC_THRES_DROP_MODE | FC_THRES_DROP_EN | FC_THRES_MIN, | |
1702 | MTK_QDMA_FC_THRES); | |
1703 | mtk_w32(eth, 0x0, MTK_QDMA_HRED2); | |
1704 | ||
1705 | return 0; | |
1706 | } | |
1707 | ||
1708 | static void mtk_dma_free(struct mtk_eth *eth) | |
1709 | { | |
1710 | int i; | |
1711 | ||
1712 | for (i = 0; i < MTK_MAC_COUNT; i++) | |
1713 | if (eth->netdev[i]) | |
1714 | netdev_reset_queue(eth->netdev[i]); | |
605e4fe4 JC |
1715 | if (eth->scratch_ring) { |
1716 | dma_free_coherent(eth->dev, | |
1717 | MTK_DMA_SIZE * sizeof(struct mtk_tx_dma), | |
1718 | eth->scratch_ring, | |
1719 | eth->phy_scratch_ring); | |
1720 | eth->scratch_ring = NULL; | |
1721 | eth->phy_scratch_ring = 0; | |
1722 | } | |
656e7052 | 1723 | mtk_tx_clean(eth); |
6427dc1d JC |
1724 | mtk_rx_clean(eth, ð->rx_ring[0]); |
1725 | mtk_rx_clean(eth, ð->rx_ring_qdma); | |
ee406810 NC |
1726 | |
1727 | if (eth->hwlro) { | |
1728 | mtk_hwlro_rx_uninit(eth); | |
1729 | for (i = 1; i < MTK_MAX_RX_RING_NUM; i++) | |
6427dc1d | 1730 | mtk_rx_clean(eth, ð->rx_ring[i]); |
ee406810 NC |
1731 | } |
1732 | ||
656e7052 JC |
1733 | kfree(eth->scratch_head); |
1734 | } | |
1735 | ||
1736 | static void mtk_tx_timeout(struct net_device *dev) | |
1737 | { | |
1738 | struct mtk_mac *mac = netdev_priv(dev); | |
1739 | struct mtk_eth *eth = mac->hw; | |
1740 | ||
1741 | eth->netdev[mac->id]->stats.tx_errors++; | |
1742 | netif_err(eth, tx_err, dev, | |
1743 | "transmit timed out\n"); | |
7c78b4ad | 1744 | schedule_work(ð->pending_work); |
656e7052 JC |
1745 | } |
1746 | ||
80673029 | 1747 | static irqreturn_t mtk_handle_irq_rx(int irq, void *_eth) |
656e7052 JC |
1748 | { |
1749 | struct mtk_eth *eth = _eth; | |
656e7052 | 1750 | |
80673029 JC |
1751 | if (likely(napi_schedule_prep(ð->rx_napi))) { |
1752 | __napi_schedule(ð->rx_napi); | |
5cce0322 | 1753 | mtk_rx_irq_disable(eth, MTK_RX_DONE_INT); |
80673029 | 1754 | } |
656e7052 | 1755 | |
80673029 JC |
1756 | return IRQ_HANDLED; |
1757 | } | |
1758 | ||
1759 | static irqreturn_t mtk_handle_irq_tx(int irq, void *_eth) | |
1760 | { | |
1761 | struct mtk_eth *eth = _eth; | |
1762 | ||
1763 | if (likely(napi_schedule_prep(ð->tx_napi))) { | |
1764 | __napi_schedule(ð->tx_napi); | |
5cce0322 | 1765 | mtk_tx_irq_disable(eth, MTK_TX_DONE_INT); |
656e7052 | 1766 | } |
656e7052 JC |
1767 | |
1768 | return IRQ_HANDLED; | |
1769 | } | |
1770 | ||
1771 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
1772 | static void mtk_poll_controller(struct net_device *dev) | |
1773 | { | |
1774 | struct mtk_mac *mac = netdev_priv(dev); | |
1775 | struct mtk_eth *eth = mac->hw; | |
656e7052 | 1776 | |
5cce0322 JC |
1777 | mtk_tx_irq_disable(eth, MTK_TX_DONE_INT); |
1778 | mtk_rx_irq_disable(eth, MTK_RX_DONE_INT); | |
8186f6e3 | 1779 | mtk_handle_irq_rx(eth->irq[2], dev); |
5cce0322 JC |
1780 | mtk_tx_irq_enable(eth, MTK_TX_DONE_INT); |
1781 | mtk_rx_irq_enable(eth, MTK_RX_DONE_INT); | |
656e7052 JC |
1782 | } |
1783 | #endif | |
1784 | ||
1785 | static int mtk_start_dma(struct mtk_eth *eth) | |
1786 | { | |
1787 | int err; | |
1788 | ||
1789 | err = mtk_dma_init(eth); | |
1790 | if (err) { | |
1791 | mtk_dma_free(eth); | |
1792 | return err; | |
1793 | } | |
1794 | ||
1795 | mtk_w32(eth, | |
bacfd110 | 1796 | MTK_TX_WB_DDONE | MTK_TX_DMA_EN | |
6427dc1d JC |
1797 | MTK_DMA_SIZE_16DWORDS | MTK_NDP_CO_PRO | |
1798 | MTK_RX_DMA_EN | MTK_RX_2B_OFFSET | | |
1799 | MTK_RX_BT_32DWORDS, | |
656e7052 JC |
1800 | MTK_QDMA_GLO_CFG); |
1801 | ||
bacfd110 NC |
1802 | mtk_w32(eth, |
1803 | MTK_RX_DMA_EN | MTK_RX_2B_OFFSET | | |
1804 | MTK_RX_BT_32DWORDS | MTK_MULTI_EN, | |
1805 | MTK_PDMA_GLO_CFG); | |
1806 | ||
656e7052 JC |
1807 | return 0; |
1808 | } | |
1809 | ||
1810 | static int mtk_open(struct net_device *dev) | |
1811 | { | |
1812 | struct mtk_mac *mac = netdev_priv(dev); | |
1813 | struct mtk_eth *eth = mac->hw; | |
1814 | ||
1815 | /* we run 2 netdevs on the same dma ring so we only bring it up once */ | |
c6d4e63e | 1816 | if (!refcount_read(ð->dma_refcnt)) { |
656e7052 JC |
1817 | int err = mtk_start_dma(eth); |
1818 | ||
1819 | if (err) | |
1820 | return err; | |
1821 | ||
80673029 | 1822 | napi_enable(ð->tx_napi); |
656e7052 | 1823 | napi_enable(ð->rx_napi); |
5cce0322 JC |
1824 | mtk_tx_irq_enable(eth, MTK_TX_DONE_INT); |
1825 | mtk_rx_irq_enable(eth, MTK_RX_DONE_INT); | |
c6d4e63e | 1826 | refcount_set(ð->dma_refcnt, 1); |
656e7052 | 1827 | } |
c6d4e63e ER |
1828 | else |
1829 | refcount_inc(ð->dma_refcnt); | |
656e7052 | 1830 | |
2364c5c5 | 1831 | phy_start(dev->phydev); |
656e7052 JC |
1832 | netif_start_queue(dev); |
1833 | ||
1834 | return 0; | |
1835 | } | |
1836 | ||
1837 | static void mtk_stop_dma(struct mtk_eth *eth, u32 glo_cfg) | |
1838 | { | |
656e7052 JC |
1839 | u32 val; |
1840 | int i; | |
1841 | ||
1842 | /* stop the dma engine */ | |
e3e9652a | 1843 | spin_lock_bh(ð->page_lock); |
656e7052 JC |
1844 | val = mtk_r32(eth, glo_cfg); |
1845 | mtk_w32(eth, val & ~(MTK_TX_WB_DDONE | MTK_RX_DMA_EN | MTK_TX_DMA_EN), | |
1846 | glo_cfg); | |
e3e9652a | 1847 | spin_unlock_bh(ð->page_lock); |
656e7052 JC |
1848 | |
1849 | /* wait for dma stop */ | |
1850 | for (i = 0; i < 10; i++) { | |
1851 | val = mtk_r32(eth, glo_cfg); | |
1852 | if (val & (MTK_TX_DMA_BUSY | MTK_RX_DMA_BUSY)) { | |
1853 | msleep(20); | |
1854 | continue; | |
1855 | } | |
1856 | break; | |
1857 | } | |
1858 | } | |
1859 | ||
1860 | static int mtk_stop(struct net_device *dev) | |
1861 | { | |
1862 | struct mtk_mac *mac = netdev_priv(dev); | |
1863 | struct mtk_eth *eth = mac->hw; | |
1864 | ||
1865 | netif_tx_disable(dev); | |
2364c5c5 | 1866 | phy_stop(dev->phydev); |
656e7052 JC |
1867 | |
1868 | /* only shutdown DMA if this is the last user */ | |
c6d4e63e | 1869 | if (!refcount_dec_and_test(ð->dma_refcnt)) |
656e7052 JC |
1870 | return 0; |
1871 | ||
5cce0322 JC |
1872 | mtk_tx_irq_disable(eth, MTK_TX_DONE_INT); |
1873 | mtk_rx_irq_disable(eth, MTK_RX_DONE_INT); | |
80673029 | 1874 | napi_disable(ð->tx_napi); |
656e7052 JC |
1875 | napi_disable(ð->rx_napi); |
1876 | ||
1877 | mtk_stop_dma(eth, MTK_QDMA_GLO_CFG); | |
6bf563d5 | 1878 | mtk_stop_dma(eth, MTK_PDMA_GLO_CFG); |
656e7052 JC |
1879 | |
1880 | mtk_dma_free(eth); | |
1881 | ||
1882 | return 0; | |
1883 | } | |
1884 | ||
2a8307aa SW |
1885 | static void ethsys_reset(struct mtk_eth *eth, u32 reset_bits) |
1886 | { | |
1887 | regmap_update_bits(eth->ethsys, ETHSYS_RSTCTRL, | |
1888 | reset_bits, | |
1889 | reset_bits); | |
1890 | ||
1891 | usleep_range(1000, 1100); | |
1892 | regmap_update_bits(eth->ethsys, ETHSYS_RSTCTRL, | |
1893 | reset_bits, | |
1894 | ~reset_bits); | |
1895 | mdelay(10); | |
1896 | } | |
1897 | ||
2ec50f57 SW |
1898 | static void mtk_clk_disable(struct mtk_eth *eth) |
1899 | { | |
1900 | int clk; | |
1901 | ||
1902 | for (clk = MTK_CLK_MAX - 1; clk >= 0; clk--) | |
1903 | clk_disable_unprepare(eth->clks[clk]); | |
1904 | } | |
1905 | ||
1906 | static int mtk_clk_enable(struct mtk_eth *eth) | |
1907 | { | |
1908 | int clk, ret; | |
1909 | ||
1910 | for (clk = 0; clk < MTK_CLK_MAX ; clk++) { | |
1911 | ret = clk_prepare_enable(eth->clks[clk]); | |
1912 | if (ret) | |
1913 | goto err_disable_clks; | |
1914 | } | |
1915 | ||
1916 | return 0; | |
1917 | ||
1918 | err_disable_clks: | |
1919 | while (--clk >= 0) | |
1920 | clk_disable_unprepare(eth->clks[clk]); | |
1921 | ||
1922 | return ret; | |
1923 | } | |
1924 | ||
9ea4d311 | 1925 | static int mtk_hw_init(struct mtk_eth *eth) |
656e7052 | 1926 | { |
2ec50f57 | 1927 | int i, val, ret; |
9ea4d311 SW |
1928 | |
1929 | if (test_and_set_bit(MTK_HW_INIT, ð->state)) | |
1930 | return 0; | |
85574dbf | 1931 | |
26a2ad8a SW |
1932 | pm_runtime_enable(eth->dev); |
1933 | pm_runtime_get_sync(eth->dev); | |
1934 | ||
2ec50f57 SW |
1935 | ret = mtk_clk_enable(eth); |
1936 | if (ret) | |
1937 | goto err_disable_pm; | |
1938 | ||
2a8307aa SW |
1939 | ethsys_reset(eth, RSTCTRL_FE); |
1940 | ethsys_reset(eth, RSTCTRL_PPE); | |
656e7052 | 1941 | |
9ea4d311 SW |
1942 | regmap_read(eth->ethsys, ETHSYS_SYSCFG0, &val); |
1943 | for (i = 0; i < MTK_MAC_COUNT; i++) { | |
1944 | if (!eth->mac[i]) | |
1945 | continue; | |
1946 | val &= ~SYSCFG0_GE_MODE(SYSCFG0_GE_MASK, eth->mac[i]->id); | |
1947 | val |= SYSCFG0_GE_MODE(eth->mac[i]->ge_mode, eth->mac[i]->id); | |
1948 | } | |
1949 | regmap_write(eth->ethsys, ETHSYS_SYSCFG0, val); | |
1950 | ||
243dc5fb SW |
1951 | if (eth->pctl) { |
1952 | /* Set GE2 driving and slew rate */ | |
1953 | regmap_write(eth->pctl, GPIO_DRV_SEL10, 0xa00); | |
656e7052 | 1954 | |
243dc5fb SW |
1955 | /* set GE2 TDSEL */ |
1956 | regmap_write(eth->pctl, GPIO_OD33_CTRL8, 0x5); | |
656e7052 | 1957 | |
243dc5fb SW |
1958 | /* set GE2 TUNE */ |
1959 | regmap_write(eth->pctl, GPIO_BIAS_CTRL, 0x0); | |
1960 | } | |
656e7052 | 1961 | |
7352e252 SW |
1962 | /* Set linkdown as the default for each GMAC. Its own MCR would be set |
1963 | * up with the more appropriate value when mtk_phy_link_adjust call is | |
1964 | * being invoked. | |
1965 | */ | |
1966 | for (i = 0; i < MTK_MAC_COUNT; i++) | |
1967 | mtk_w32(eth, 0, MTK_MAC_MCR(i)); | |
656e7052 | 1968 | |
87e3df49 SW |
1969 | /* Indicates CDM to parse the MTK special tag from CPU |
1970 | * which also is working out for untag packets. | |
1971 | */ | |
1972 | val = mtk_r32(eth, MTK_CDMQ_IG_CTRL); | |
1973 | mtk_w32(eth, val | MTK_CDMQ_STAG_EN, MTK_CDMQ_IG_CTRL); | |
1974 | ||
656e7052 JC |
1975 | /* Enable RX VLan Offloading */ |
1976 | mtk_w32(eth, 1, MTK_CDMP_EG_CTRL); | |
1977 | ||
671d41e6 JC |
1978 | /* enable interrupt delay for RX */ |
1979 | mtk_w32(eth, MTK_PDMA_DELAY_RX_DELAY, MTK_PDMA_DELAY_INT); | |
1980 | ||
656e7052 JC |
1981 | /* disable delay and normal interrupt */ |
1982 | mtk_w32(eth, 0, MTK_QDMA_DELAY_INT); | |
5cce0322 JC |
1983 | mtk_tx_irq_disable(eth, ~0); |
1984 | mtk_rx_irq_disable(eth, ~0); | |
656e7052 JC |
1985 | mtk_w32(eth, RST_GL_PSE, MTK_RST_GL); |
1986 | mtk_w32(eth, 0, MTK_RST_GL); | |
1987 | ||
1988 | /* FE int grouping */ | |
80673029 JC |
1989 | mtk_w32(eth, MTK_TX_DONE_INT, MTK_PDMA_INT_GRP1); |
1990 | mtk_w32(eth, MTK_RX_DONE_INT, MTK_PDMA_INT_GRP2); | |
1991 | mtk_w32(eth, MTK_TX_DONE_INT, MTK_QDMA_INT_GRP1); | |
1992 | mtk_w32(eth, MTK_RX_DONE_INT, MTK_QDMA_INT_GRP2); | |
1993 | mtk_w32(eth, 0x21021000, MTK_FE_INT_GRP); | |
656e7052 JC |
1994 | |
1995 | for (i = 0; i < 2; i++) { | |
1996 | u32 val = mtk_r32(eth, MTK_GDMA_FWD_CFG(i)); | |
1997 | ||
9c08435e | 1998 | /* setup the forward port to send frame to PDMA */ |
656e7052 | 1999 | val &= ~0xffff; |
656e7052 JC |
2000 | |
2001 | /* Enable RX checksum */ | |
2002 | val |= MTK_GDMA_ICS_EN | MTK_GDMA_TCS_EN | MTK_GDMA_UCS_EN; | |
2003 | ||
2004 | /* setup the mac dma */ | |
2005 | mtk_w32(eth, val, MTK_GDMA_FWD_CFG(i)); | |
2006 | } | |
2007 | ||
2008 | return 0; | |
2ec50f57 SW |
2009 | |
2010 | err_disable_pm: | |
2011 | pm_runtime_put_sync(eth->dev); | |
2012 | pm_runtime_disable(eth->dev); | |
2013 | ||
2014 | return ret; | |
656e7052 JC |
2015 | } |
2016 | ||
bf253fb7 SW |
2017 | static int mtk_hw_deinit(struct mtk_eth *eth) |
2018 | { | |
9ea4d311 SW |
2019 | if (!test_and_clear_bit(MTK_HW_INIT, ð->state)) |
2020 | return 0; | |
2021 | ||
2ec50f57 | 2022 | mtk_clk_disable(eth); |
bf253fb7 | 2023 | |
26a2ad8a SW |
2024 | pm_runtime_put_sync(eth->dev); |
2025 | pm_runtime_disable(eth->dev); | |
2026 | ||
bf253fb7 SW |
2027 | return 0; |
2028 | } | |
2029 | ||
656e7052 JC |
2030 | static int __init mtk_init(struct net_device *dev) |
2031 | { | |
2032 | struct mtk_mac *mac = netdev_priv(dev); | |
2033 | struct mtk_eth *eth = mac->hw; | |
2034 | const char *mac_addr; | |
2035 | ||
2036 | mac_addr = of_get_mac_address(mac->of_node); | |
2037 | if (mac_addr) | |
2038 | ether_addr_copy(dev->dev_addr, mac_addr); | |
2039 | ||
2040 | /* If the mac address is invalid, use random mac address */ | |
2041 | if (!is_valid_ether_addr(dev->dev_addr)) { | |
e3c36e48 | 2042 | eth_hw_addr_random(dev); |
656e7052 JC |
2043 | dev_err(eth->dev, "generated random MAC address %pM\n", |
2044 | dev->dev_addr); | |
656e7052 JC |
2045 | } |
2046 | ||
2364c5c5 | 2047 | return mtk_phy_connect(dev); |
656e7052 JC |
2048 | } |
2049 | ||
2050 | static void mtk_uninit(struct net_device *dev) | |
2051 | { | |
2052 | struct mtk_mac *mac = netdev_priv(dev); | |
2053 | struct mtk_eth *eth = mac->hw; | |
2054 | ||
2364c5c5 | 2055 | phy_disconnect(dev->phydev); |
16a67eb3 JH |
2056 | if (of_phy_is_fixed_link(mac->of_node)) |
2057 | of_phy_deregister_fixed_link(mac->of_node); | |
5cce0322 JC |
2058 | mtk_tx_irq_disable(eth, ~0); |
2059 | mtk_rx_irq_disable(eth, ~0); | |
656e7052 JC |
2060 | } |
2061 | ||
2062 | static int mtk_do_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) | |
2063 | { | |
656e7052 JC |
2064 | switch (cmd) { |
2065 | case SIOCGMIIPHY: | |
2066 | case SIOCGMIIREG: | |
2067 | case SIOCSMIIREG: | |
2364c5c5 | 2068 | return phy_mii_ioctl(dev->phydev, ifr, cmd); |
656e7052 JC |
2069 | default: |
2070 | break; | |
2071 | } | |
2072 | ||
2073 | return -EOPNOTSUPP; | |
2074 | } | |
2075 | ||
2076 | static void mtk_pending_work(struct work_struct *work) | |
2077 | { | |
7c78b4ad | 2078 | struct mtk_eth *eth = container_of(work, struct mtk_eth, pending_work); |
e7d425dc JC |
2079 | int err, i; |
2080 | unsigned long restart = 0; | |
656e7052 JC |
2081 | |
2082 | rtnl_lock(); | |
656e7052 | 2083 | |
dce6fa42 SW |
2084 | dev_dbg(eth->dev, "[%s][%d] reset\n", __func__, __LINE__); |
2085 | ||
2086 | while (test_and_set_bit_lock(MTK_RESETTING, ð->state)) | |
2087 | cpu_relax(); | |
2088 | ||
2089 | dev_dbg(eth->dev, "[%s][%d] mtk_stop starts\n", __func__, __LINE__); | |
e7d425dc JC |
2090 | /* stop all devices to make sure that dma is properly shut down */ |
2091 | for (i = 0; i < MTK_MAC_COUNT; i++) { | |
7c78b4ad | 2092 | if (!eth->netdev[i]) |
e7d425dc JC |
2093 | continue; |
2094 | mtk_stop(eth->netdev[i]); | |
2095 | __set_bit(i, &restart); | |
2096 | } | |
dce6fa42 | 2097 | dev_dbg(eth->dev, "[%s][%d] mtk_stop ends\n", __func__, __LINE__); |
e7d425dc | 2098 | |
9ea4d311 SW |
2099 | /* restart underlying hardware such as power, clock, pin mux |
2100 | * and the connected phy | |
2101 | */ | |
2102 | mtk_hw_deinit(eth); | |
2103 | ||
2104 | if (eth->dev->pins) | |
2105 | pinctrl_select_state(eth->dev->pins->p, | |
2106 | eth->dev->pins->default_state); | |
2107 | mtk_hw_init(eth); | |
2108 | ||
2109 | for (i = 0; i < MTK_MAC_COUNT; i++) { | |
2110 | if (!eth->mac[i] || | |
2111 | of_phy_is_fixed_link(eth->mac[i]->of_node)) | |
2112 | continue; | |
2364c5c5 | 2113 | err = phy_init_hw(eth->netdev[i]->phydev); |
9ea4d311 SW |
2114 | if (err) |
2115 | dev_err(eth->dev, "%s: PHY init failed.\n", | |
2116 | eth->netdev[i]->name); | |
2117 | } | |
2118 | ||
e7d425dc JC |
2119 | /* restart DMA and enable IRQs */ |
2120 | for (i = 0; i < MTK_MAC_COUNT; i++) { | |
2121 | if (!test_bit(i, &restart)) | |
2122 | continue; | |
2123 | err = mtk_open(eth->netdev[i]); | |
2124 | if (err) { | |
2125 | netif_alert(eth, ifup, eth->netdev[i], | |
2126 | "Driver up/down cycle failed, closing device.\n"); | |
2127 | dev_close(eth->netdev[i]); | |
2128 | } | |
656e7052 | 2129 | } |
dce6fa42 SW |
2130 | |
2131 | dev_dbg(eth->dev, "[%s][%d] reset done\n", __func__, __LINE__); | |
2132 | ||
2133 | clear_bit_unlock(MTK_RESETTING, ð->state); | |
2134 | ||
656e7052 JC |
2135 | rtnl_unlock(); |
2136 | } | |
2137 | ||
8a8a9e89 | 2138 | static int mtk_free_dev(struct mtk_eth *eth) |
656e7052 JC |
2139 | { |
2140 | int i; | |
2141 | ||
2142 | for (i = 0; i < MTK_MAC_COUNT; i++) { | |
656e7052 JC |
2143 | if (!eth->netdev[i]) |
2144 | continue; | |
8a8a9e89 SW |
2145 | free_netdev(eth->netdev[i]); |
2146 | } | |
2147 | ||
2148 | return 0; | |
2149 | } | |
656e7052 | 2150 | |
8a8a9e89 SW |
2151 | static int mtk_unreg_dev(struct mtk_eth *eth) |
2152 | { | |
2153 | int i; | |
2154 | ||
2155 | for (i = 0; i < MTK_MAC_COUNT; i++) { | |
2156 | if (!eth->netdev[i]) | |
2157 | continue; | |
656e7052 | 2158 | unregister_netdev(eth->netdev[i]); |
656e7052 | 2159 | } |
8a8a9e89 SW |
2160 | |
2161 | return 0; | |
2162 | } | |
2163 | ||
2164 | static int mtk_cleanup(struct mtk_eth *eth) | |
2165 | { | |
2166 | mtk_unreg_dev(eth); | |
2167 | mtk_free_dev(eth); | |
7c78b4ad | 2168 | cancel_work_sync(ð->pending_work); |
656e7052 JC |
2169 | |
2170 | return 0; | |
2171 | } | |
2172 | ||
3a82e78c BX |
2173 | static int mtk_get_link_ksettings(struct net_device *ndev, |
2174 | struct ethtool_link_ksettings *cmd) | |
656e7052 | 2175 | { |
3e60b748 | 2176 | struct mtk_mac *mac = netdev_priv(ndev); |
656e7052 | 2177 | |
dce6fa42 SW |
2178 | if (unlikely(test_bit(MTK_RESETTING, &mac->hw->state))) |
2179 | return -EBUSY; | |
2180 | ||
5514174f | 2181 | phy_ethtool_ksettings_get(ndev->phydev, cmd); |
2182 | ||
2183 | return 0; | |
656e7052 JC |
2184 | } |
2185 | ||
3a82e78c BX |
2186 | static int mtk_set_link_ksettings(struct net_device *ndev, |
2187 | const struct ethtool_link_ksettings *cmd) | |
656e7052 | 2188 | { |
3e60b748 | 2189 | struct mtk_mac *mac = netdev_priv(ndev); |
656e7052 | 2190 | |
3e60b748 SW |
2191 | if (unlikely(test_bit(MTK_RESETTING, &mac->hw->state))) |
2192 | return -EBUSY; | |
656e7052 | 2193 | |
3e60b748 | 2194 | return phy_ethtool_ksettings_set(ndev->phydev, cmd); |
656e7052 JC |
2195 | } |
2196 | ||
2197 | static void mtk_get_drvinfo(struct net_device *dev, | |
2198 | struct ethtool_drvinfo *info) | |
2199 | { | |
2200 | struct mtk_mac *mac = netdev_priv(dev); | |
2201 | ||
2202 | strlcpy(info->driver, mac->hw->dev->driver->name, sizeof(info->driver)); | |
2203 | strlcpy(info->bus_info, dev_name(mac->hw->dev), sizeof(info->bus_info)); | |
2204 | info->n_stats = ARRAY_SIZE(mtk_ethtool_stats); | |
2205 | } | |
2206 | ||
2207 | static u32 mtk_get_msglevel(struct net_device *dev) | |
2208 | { | |
2209 | struct mtk_mac *mac = netdev_priv(dev); | |
2210 | ||
2211 | return mac->hw->msg_enable; | |
2212 | } | |
2213 | ||
2214 | static void mtk_set_msglevel(struct net_device *dev, u32 value) | |
2215 | { | |
2216 | struct mtk_mac *mac = netdev_priv(dev); | |
2217 | ||
2218 | mac->hw->msg_enable = value; | |
2219 | } | |
2220 | ||
2221 | static int mtk_nway_reset(struct net_device *dev) | |
2222 | { | |
2223 | struct mtk_mac *mac = netdev_priv(dev); | |
2224 | ||
dce6fa42 SW |
2225 | if (unlikely(test_bit(MTK_RESETTING, &mac->hw->state))) |
2226 | return -EBUSY; | |
2227 | ||
2364c5c5 | 2228 | return genphy_restart_aneg(dev->phydev); |
656e7052 JC |
2229 | } |
2230 | ||
2231 | static u32 mtk_get_link(struct net_device *dev) | |
2232 | { | |
2233 | struct mtk_mac *mac = netdev_priv(dev); | |
2234 | int err; | |
2235 | ||
dce6fa42 SW |
2236 | if (unlikely(test_bit(MTK_RESETTING, &mac->hw->state))) |
2237 | return -EBUSY; | |
2238 | ||
2364c5c5 | 2239 | err = genphy_update_link(dev->phydev); |
656e7052 JC |
2240 | if (err) |
2241 | return ethtool_op_get_link(dev); | |
2242 | ||
2364c5c5 | 2243 | return dev->phydev->link; |
656e7052 JC |
2244 | } |
2245 | ||
2246 | static void mtk_get_strings(struct net_device *dev, u32 stringset, u8 *data) | |
2247 | { | |
2248 | int i; | |
2249 | ||
2250 | switch (stringset) { | |
2251 | case ETH_SS_STATS: | |
2252 | for (i = 0; i < ARRAY_SIZE(mtk_ethtool_stats); i++) { | |
2253 | memcpy(data, mtk_ethtool_stats[i].str, ETH_GSTRING_LEN); | |
2254 | data += ETH_GSTRING_LEN; | |
2255 | } | |
2256 | break; | |
2257 | } | |
2258 | } | |
2259 | ||
2260 | static int mtk_get_sset_count(struct net_device *dev, int sset) | |
2261 | { | |
2262 | switch (sset) { | |
2263 | case ETH_SS_STATS: | |
2264 | return ARRAY_SIZE(mtk_ethtool_stats); | |
2265 | default: | |
2266 | return -EOPNOTSUPP; | |
2267 | } | |
2268 | } | |
2269 | ||
2270 | static void mtk_get_ethtool_stats(struct net_device *dev, | |
2271 | struct ethtool_stats *stats, u64 *data) | |
2272 | { | |
2273 | struct mtk_mac *mac = netdev_priv(dev); | |
2274 | struct mtk_hw_stats *hwstats = mac->hw_stats; | |
2275 | u64 *data_src, *data_dst; | |
2276 | unsigned int start; | |
2277 | int i; | |
2278 | ||
dce6fa42 SW |
2279 | if (unlikely(test_bit(MTK_RESETTING, &mac->hw->state))) |
2280 | return; | |
2281 | ||
656e7052 | 2282 | if (netif_running(dev) && netif_device_present(dev)) { |
8d32e062 | 2283 | if (spin_trylock_bh(&hwstats->stats_lock)) { |
656e7052 | 2284 | mtk_stats_update_mac(mac); |
8d32e062 | 2285 | spin_unlock_bh(&hwstats->stats_lock); |
656e7052 JC |
2286 | } |
2287 | } | |
2288 | ||
94d308d0 SW |
2289 | data_src = (u64 *)hwstats; |
2290 | ||
656e7052 | 2291 | do { |
656e7052 JC |
2292 | data_dst = data; |
2293 | start = u64_stats_fetch_begin_irq(&hwstats->syncp); | |
2294 | ||
2295 | for (i = 0; i < ARRAY_SIZE(mtk_ethtool_stats); i++) | |
2296 | *data_dst++ = *(data_src + mtk_ethtool_stats[i].offset); | |
2297 | } while (u64_stats_fetch_retry_irq(&hwstats->syncp, start)); | |
2298 | } | |
2299 | ||
7aab747e NC |
2300 | static int mtk_get_rxnfc(struct net_device *dev, struct ethtool_rxnfc *cmd, |
2301 | u32 *rule_locs) | |
2302 | { | |
2303 | int ret = -EOPNOTSUPP; | |
2304 | ||
2305 | switch (cmd->cmd) { | |
2306 | case ETHTOOL_GRXRINGS: | |
2307 | if (dev->features & NETIF_F_LRO) { | |
2308 | cmd->data = MTK_MAX_RX_RING_NUM; | |
2309 | ret = 0; | |
2310 | } | |
2311 | break; | |
2312 | case ETHTOOL_GRXCLSRLCNT: | |
2313 | if (dev->features & NETIF_F_LRO) { | |
2314 | struct mtk_mac *mac = netdev_priv(dev); | |
2315 | ||
2316 | cmd->rule_cnt = mac->hwlro_ip_cnt; | |
2317 | ret = 0; | |
2318 | } | |
2319 | break; | |
2320 | case ETHTOOL_GRXCLSRULE: | |
2321 | if (dev->features & NETIF_F_LRO) | |
2322 | ret = mtk_hwlro_get_fdir_entry(dev, cmd); | |
2323 | break; | |
2324 | case ETHTOOL_GRXCLSRLALL: | |
2325 | if (dev->features & NETIF_F_LRO) | |
2326 | ret = mtk_hwlro_get_fdir_all(dev, cmd, | |
2327 | rule_locs); | |
2328 | break; | |
2329 | default: | |
2330 | break; | |
2331 | } | |
2332 | ||
2333 | return ret; | |
2334 | } | |
2335 | ||
2336 | static int mtk_set_rxnfc(struct net_device *dev, struct ethtool_rxnfc *cmd) | |
2337 | { | |
2338 | int ret = -EOPNOTSUPP; | |
2339 | ||
2340 | switch (cmd->cmd) { | |
2341 | case ETHTOOL_SRXCLSRLINS: | |
2342 | if (dev->features & NETIF_F_LRO) | |
2343 | ret = mtk_hwlro_add_ipaddr(dev, cmd); | |
2344 | break; | |
2345 | case ETHTOOL_SRXCLSRLDEL: | |
2346 | if (dev->features & NETIF_F_LRO) | |
2347 | ret = mtk_hwlro_del_ipaddr(dev, cmd); | |
2348 | break; | |
2349 | default: | |
2350 | break; | |
2351 | } | |
2352 | ||
2353 | return ret; | |
2354 | } | |
2355 | ||
6a38cb15 | 2356 | static const struct ethtool_ops mtk_ethtool_ops = { |
3e60b748 SW |
2357 | .get_link_ksettings = mtk_get_link_ksettings, |
2358 | .set_link_ksettings = mtk_set_link_ksettings, | |
656e7052 JC |
2359 | .get_drvinfo = mtk_get_drvinfo, |
2360 | .get_msglevel = mtk_get_msglevel, | |
2361 | .set_msglevel = mtk_set_msglevel, | |
2362 | .nway_reset = mtk_nway_reset, | |
2363 | .get_link = mtk_get_link, | |
2364 | .get_strings = mtk_get_strings, | |
2365 | .get_sset_count = mtk_get_sset_count, | |
2366 | .get_ethtool_stats = mtk_get_ethtool_stats, | |
7aab747e NC |
2367 | .get_rxnfc = mtk_get_rxnfc, |
2368 | .set_rxnfc = mtk_set_rxnfc, | |
656e7052 JC |
2369 | }; |
2370 | ||
2371 | static const struct net_device_ops mtk_netdev_ops = { | |
2372 | .ndo_init = mtk_init, | |
2373 | .ndo_uninit = mtk_uninit, | |
2374 | .ndo_open = mtk_open, | |
2375 | .ndo_stop = mtk_stop, | |
2376 | .ndo_start_xmit = mtk_start_xmit, | |
2377 | .ndo_set_mac_address = mtk_set_mac_address, | |
2378 | .ndo_validate_addr = eth_validate_addr, | |
2379 | .ndo_do_ioctl = mtk_do_ioctl, | |
656e7052 JC |
2380 | .ndo_tx_timeout = mtk_tx_timeout, |
2381 | .ndo_get_stats64 = mtk_get_stats64, | |
7aab747e NC |
2382 | .ndo_fix_features = mtk_fix_features, |
2383 | .ndo_set_features = mtk_set_features, | |
656e7052 JC |
2384 | #ifdef CONFIG_NET_POLL_CONTROLLER |
2385 | .ndo_poll_controller = mtk_poll_controller, | |
2386 | #endif | |
2387 | }; | |
2388 | ||
2389 | static int mtk_add_mac(struct mtk_eth *eth, struct device_node *np) | |
2390 | { | |
2391 | struct mtk_mac *mac; | |
2392 | const __be32 *_id = of_get_property(np, "reg", NULL); | |
2393 | int id, err; | |
2394 | ||
2395 | if (!_id) { | |
2396 | dev_err(eth->dev, "missing mac id\n"); | |
2397 | return -EINVAL; | |
2398 | } | |
2399 | ||
2400 | id = be32_to_cpup(_id); | |
2401 | if (id >= MTK_MAC_COUNT) { | |
2402 | dev_err(eth->dev, "%d is not a valid mac id\n", id); | |
2403 | return -EINVAL; | |
2404 | } | |
2405 | ||
2406 | if (eth->netdev[id]) { | |
2407 | dev_err(eth->dev, "duplicate mac id found: %d\n", id); | |
2408 | return -EINVAL; | |
2409 | } | |
2410 | ||
2411 | eth->netdev[id] = alloc_etherdev(sizeof(*mac)); | |
2412 | if (!eth->netdev[id]) { | |
2413 | dev_err(eth->dev, "alloc_etherdev failed\n"); | |
2414 | return -ENOMEM; | |
2415 | } | |
2416 | mac = netdev_priv(eth->netdev[id]); | |
2417 | eth->mac[id] = mac; | |
2418 | mac->id = id; | |
2419 | mac->hw = eth; | |
2420 | mac->of_node = np; | |
656e7052 | 2421 | |
ee406810 NC |
2422 | memset(mac->hwlro_ip, 0, sizeof(mac->hwlro_ip)); |
2423 | mac->hwlro_ip_cnt = 0; | |
2424 | ||
656e7052 JC |
2425 | mac->hw_stats = devm_kzalloc(eth->dev, |
2426 | sizeof(*mac->hw_stats), | |
2427 | GFP_KERNEL); | |
2428 | if (!mac->hw_stats) { | |
2429 | dev_err(eth->dev, "failed to allocate counter memory\n"); | |
2430 | err = -ENOMEM; | |
2431 | goto free_netdev; | |
2432 | } | |
2433 | spin_lock_init(&mac->hw_stats->stats_lock); | |
d7005652 | 2434 | u64_stats_init(&mac->hw_stats->syncp); |
656e7052 JC |
2435 | mac->hw_stats->reg_offset = id * MTK_STAT_OFFSET; |
2436 | ||
2437 | SET_NETDEV_DEV(eth->netdev[id], eth->dev); | |
eaadf9fd | 2438 | eth->netdev[id]->watchdog_timeo = 5 * HZ; |
656e7052 JC |
2439 | eth->netdev[id]->netdev_ops = &mtk_netdev_ops; |
2440 | eth->netdev[id]->base_addr = (unsigned long)eth->base; | |
ee406810 NC |
2441 | |
2442 | eth->netdev[id]->hw_features = MTK_HW_FEATURES; | |
2443 | if (eth->hwlro) | |
2444 | eth->netdev[id]->hw_features |= NETIF_F_LRO; | |
2445 | ||
656e7052 JC |
2446 | eth->netdev[id]->vlan_features = MTK_HW_FEATURES & |
2447 | ~(NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX); | |
2448 | eth->netdev[id]->features |= MTK_HW_FEATURES; | |
2449 | eth->netdev[id]->ethtool_ops = &mtk_ethtool_ops; | |
2450 | ||
80673029 | 2451 | eth->netdev[id]->irq = eth->irq[0]; |
3174b3b5 SW |
2452 | eth->netdev[id]->dev.of_node = np; |
2453 | ||
656e7052 JC |
2454 | return 0; |
2455 | ||
2456 | free_netdev: | |
2457 | free_netdev(eth->netdev[id]); | |
2458 | return err; | |
2459 | } | |
2460 | ||
2461 | static int mtk_probe(struct platform_device *pdev) | |
2462 | { | |
2463 | struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
2464 | struct device_node *mac_np; | |
656e7052 JC |
2465 | struct mtk_eth *eth; |
2466 | int err; | |
80673029 | 2467 | int i; |
656e7052 | 2468 | |
656e7052 JC |
2469 | eth = devm_kzalloc(&pdev->dev, sizeof(*eth), GFP_KERNEL); |
2470 | if (!eth) | |
2471 | return -ENOMEM; | |
2472 | ||
eda7d46d | 2473 | eth->soc = of_device_get_match_data(&pdev->dev); |
2ec50f57 | 2474 | |
549e5495 | 2475 | eth->dev = &pdev->dev; |
656e7052 | 2476 | eth->base = devm_ioremap_resource(&pdev->dev, res); |
621e49f6 VZ |
2477 | if (IS_ERR(eth->base)) |
2478 | return PTR_ERR(eth->base); | |
656e7052 JC |
2479 | |
2480 | spin_lock_init(ð->page_lock); | |
5cce0322 JC |
2481 | spin_lock_init(ð->tx_irq_lock); |
2482 | spin_lock_init(ð->rx_irq_lock); | |
656e7052 JC |
2483 | |
2484 | eth->ethsys = syscon_regmap_lookup_by_phandle(pdev->dev.of_node, | |
2485 | "mediatek,ethsys"); | |
2486 | if (IS_ERR(eth->ethsys)) { | |
2487 | dev_err(&pdev->dev, "no ethsys regmap found\n"); | |
2488 | return PTR_ERR(eth->ethsys); | |
2489 | } | |
2490 | ||
42c03844 SW |
2491 | if (MTK_HAS_CAPS(eth->soc->caps, MTK_SGMII)) { |
2492 | eth->sgmiisys = | |
2493 | syscon_regmap_lookup_by_phandle(pdev->dev.of_node, | |
2494 | "mediatek,sgmiisys"); | |
2495 | if (IS_ERR(eth->sgmiisys)) { | |
2496 | dev_err(&pdev->dev, "no sgmiisys regmap found\n"); | |
2497 | return PTR_ERR(eth->sgmiisys); | |
2498 | } | |
2499 | } | |
2500 | ||
243dc5fb SW |
2501 | if (eth->soc->required_pctl) { |
2502 | eth->pctl = syscon_regmap_lookup_by_phandle(pdev->dev.of_node, | |
2503 | "mediatek,pctl"); | |
2504 | if (IS_ERR(eth->pctl)) { | |
2505 | dev_err(&pdev->dev, "no pctl regmap found\n"); | |
2506 | return PTR_ERR(eth->pctl); | |
2507 | } | |
656e7052 JC |
2508 | } |
2509 | ||
80673029 JC |
2510 | for (i = 0; i < 3; i++) { |
2511 | eth->irq[i] = platform_get_irq(pdev, i); | |
2512 | if (eth->irq[i] < 0) { | |
2513 | dev_err(&pdev->dev, "no IRQ%d resource found\n", i); | |
2514 | return -ENXIO; | |
2515 | } | |
656e7052 | 2516 | } |
549e5495 SW |
2517 | for (i = 0; i < ARRAY_SIZE(eth->clks); i++) { |
2518 | eth->clks[i] = devm_clk_get(eth->dev, | |
2519 | mtk_clks_source_name[i]); | |
2520 | if (IS_ERR(eth->clks[i])) { | |
2521 | if (PTR_ERR(eth->clks[i]) == -EPROBE_DEFER) | |
2522 | return -EPROBE_DEFER; | |
2ec50f57 SW |
2523 | if (eth->soc->required_clks & BIT(i)) { |
2524 | dev_err(&pdev->dev, "clock %s not found\n", | |
2525 | mtk_clks_source_name[i]); | |
2526 | return -EINVAL; | |
2527 | } | |
2528 | eth->clks[i] = NULL; | |
549e5495 SW |
2529 | } |
2530 | } | |
656e7052 | 2531 | |
656e7052 | 2532 | eth->msg_enable = netif_msg_init(mtk_msg_level, MTK_DEFAULT_MSG_ENABLE); |
7c78b4ad | 2533 | INIT_WORK(ð->pending_work, mtk_pending_work); |
656e7052 JC |
2534 | |
2535 | err = mtk_hw_init(eth); | |
2536 | if (err) | |
2537 | return err; | |
2538 | ||
2d14ba72 | 2539 | eth->hwlro = MTK_HAS_CAPS(eth->soc->caps, MTK_HWLRO); |
983e1a6c | 2540 | |
656e7052 JC |
2541 | for_each_child_of_node(pdev->dev.of_node, mac_np) { |
2542 | if (!of_device_is_compatible(mac_np, | |
2543 | "mediatek,eth-mac")) | |
2544 | continue; | |
2545 | ||
2546 | if (!of_device_is_available(mac_np)) | |
2547 | continue; | |
2548 | ||
2549 | err = mtk_add_mac(eth, mac_np); | |
2550 | if (err) | |
8a8a9e89 | 2551 | goto err_deinit_hw; |
656e7052 JC |
2552 | } |
2553 | ||
85574dbf SW |
2554 | err = devm_request_irq(eth->dev, eth->irq[1], mtk_handle_irq_tx, 0, |
2555 | dev_name(eth->dev), eth); | |
2556 | if (err) | |
2557 | goto err_free_dev; | |
2558 | ||
2559 | err = devm_request_irq(eth->dev, eth->irq[2], mtk_handle_irq_rx, 0, | |
2560 | dev_name(eth->dev), eth); | |
2561 | if (err) | |
2562 | goto err_free_dev; | |
2563 | ||
2564 | err = mtk_mdio_init(eth); | |
2565 | if (err) | |
2566 | goto err_free_dev; | |
2567 | ||
2568 | for (i = 0; i < MTK_MAX_DEVS; i++) { | |
2569 | if (!eth->netdev[i]) | |
2570 | continue; | |
2571 | ||
2572 | err = register_netdev(eth->netdev[i]); | |
2573 | if (err) { | |
2574 | dev_err(eth->dev, "error bringing up device\n"); | |
8a8a9e89 | 2575 | goto err_deinit_mdio; |
85574dbf SW |
2576 | } else |
2577 | netif_info(eth, probe, eth->netdev[i], | |
2578 | "mediatek frame engine at 0x%08lx, irq %d\n", | |
2579 | eth->netdev[i]->base_addr, eth->irq[0]); | |
2580 | } | |
2581 | ||
656e7052 JC |
2582 | /* we run 2 devices on the same DMA ring so we need a dummy device |
2583 | * for NAPI to work | |
2584 | */ | |
2585 | init_dummy_netdev(ð->dummy_dev); | |
80673029 JC |
2586 | netif_napi_add(ð->dummy_dev, ð->tx_napi, mtk_napi_tx, |
2587 | MTK_NAPI_WEIGHT); | |
2588 | netif_napi_add(ð->dummy_dev, ð->rx_napi, mtk_napi_rx, | |
656e7052 JC |
2589 | MTK_NAPI_WEIGHT); |
2590 | ||
2591 | platform_set_drvdata(pdev, eth); | |
2592 | ||
2593 | return 0; | |
2594 | ||
8a8a9e89 SW |
2595 | err_deinit_mdio: |
2596 | mtk_mdio_cleanup(eth); | |
656e7052 | 2597 | err_free_dev: |
8a8a9e89 SW |
2598 | mtk_free_dev(eth); |
2599 | err_deinit_hw: | |
2600 | mtk_hw_deinit(eth); | |
2601 | ||
656e7052 JC |
2602 | return err; |
2603 | } | |
2604 | ||
2605 | static int mtk_remove(struct platform_device *pdev) | |
2606 | { | |
2607 | struct mtk_eth *eth = platform_get_drvdata(pdev); | |
79e9a414 SW |
2608 | int i; |
2609 | ||
2610 | /* stop all devices to make sure that dma is properly shut down */ | |
2611 | for (i = 0; i < MTK_MAC_COUNT; i++) { | |
2612 | if (!eth->netdev[i]) | |
2613 | continue; | |
2614 | mtk_stop(eth->netdev[i]); | |
2615 | } | |
656e7052 | 2616 | |
bf253fb7 | 2617 | mtk_hw_deinit(eth); |
656e7052 | 2618 | |
80673029 | 2619 | netif_napi_del(ð->tx_napi); |
656e7052 JC |
2620 | netif_napi_del(ð->rx_napi); |
2621 | mtk_cleanup(eth); | |
e82f7148 | 2622 | mtk_mdio_cleanup(eth); |
656e7052 JC |
2623 | |
2624 | return 0; | |
2625 | } | |
2626 | ||
2ec50f57 | 2627 | static const struct mtk_soc_data mt2701_data = { |
2d14ba72 | 2628 | .caps = MTK_GMAC1_TRGMII | MTK_HWLRO, |
243dc5fb SW |
2629 | .required_clks = MT7623_CLKS_BITMAP, |
2630 | .required_pctl = true, | |
2ec50f57 SW |
2631 | }; |
2632 | ||
42c03844 | 2633 | static const struct mtk_soc_data mt7622_data = { |
2d14ba72 | 2634 | .caps = MTK_DUAL_GMAC_SHARED_SGMII | MTK_GMAC1_ESW | MTK_HWLRO, |
243dc5fb SW |
2635 | .required_clks = MT7622_CLKS_BITMAP, |
2636 | .required_pctl = false, | |
42c03844 SW |
2637 | }; |
2638 | ||
2ec50f57 | 2639 | static const struct mtk_soc_data mt7623_data = { |
2d14ba72 | 2640 | .caps = MTK_GMAC1_TRGMII | MTK_HWLRO, |
243dc5fb SW |
2641 | .required_clks = MT7623_CLKS_BITMAP, |
2642 | .required_pctl = true, | |
2ec50f57 SW |
2643 | }; |
2644 | ||
656e7052 | 2645 | const struct of_device_id of_mtk_match[] = { |
2ec50f57 | 2646 | { .compatible = "mediatek,mt2701-eth", .data = &mt2701_data}, |
42c03844 | 2647 | { .compatible = "mediatek,mt7622-eth", .data = &mt7622_data}, |
2ec50f57 | 2648 | { .compatible = "mediatek,mt7623-eth", .data = &mt7623_data}, |
656e7052 JC |
2649 | {}, |
2650 | }; | |
7077dc41 | 2651 | MODULE_DEVICE_TABLE(of, of_mtk_match); |
656e7052 JC |
2652 | |
2653 | static struct platform_driver mtk_driver = { | |
2654 | .probe = mtk_probe, | |
2655 | .remove = mtk_remove, | |
2656 | .driver = { | |
2657 | .name = "mtk_soc_eth", | |
656e7052 JC |
2658 | .of_match_table = of_mtk_match, |
2659 | }, | |
2660 | }; | |
2661 | ||
2662 | module_platform_driver(mtk_driver); | |
2663 | ||
2664 | MODULE_LICENSE("GPL"); | |
2665 | MODULE_AUTHOR("John Crispin <blogic@openwrt.org>"); | |
2666 | MODULE_DESCRIPTION("Ethernet driver for MediaTek SoC"); |