blob: 1d1118c34134e9e74f40ceace6599d0424d8e12b [file] [log] [blame]
Tom Rini10e47792018-05-06 17:58:06 -04001// SPDX-License-Identifier: GPL-2.0+
Marek Vasut17714cb2017-05-13 15:54:28 +02002/*
3 * drivers/net/ravb.c
4 * This file is driver for Renesas Ethernet AVB.
5 *
6 * Copyright (C) 2015-2017 Renesas Electronics Corporation
7 *
8 * Based on the SuperH Ethernet driver.
Marek Vasut17714cb2017-05-13 15:54:28 +02009 */
10
11#include <common.h>
Marek Vasutc9746c62017-07-21 23:20:35 +020012#include <clk.h>
Simon Glass63334482019-11-14 12:57:39 -070013#include <cpu_func.h>
Marek Vasut17714cb2017-05-13 15:54:28 +020014#include <dm.h>
15#include <errno.h>
Simon Glass0f2af882020-05-10 11:40:05 -060016#include <log.h>
Marek Vasut17714cb2017-05-13 15:54:28 +020017#include <miiphy.h>
18#include <malloc.h>
Simon Glass274e0b02020-05-10 11:39:56 -060019#include <asm/cache.h>
Simon Glass4dcacfc2020-05-10 11:40:13 -060020#include <linux/bitops.h>
Simon Glassdbd79542020-05-10 11:40:11 -060021#include <linux/delay.h>
Marek Vasut17714cb2017-05-13 15:54:28 +020022#include <linux/mii.h>
23#include <wait_bit.h>
24#include <asm/io.h>
Simon Glass3ba929a2020-10-30 21:38:53 -060025#include <asm/global_data.h>
Marek Vasut58f49d62017-09-15 21:11:15 +020026#include <asm/gpio.h>
Marek Vasut17714cb2017-05-13 15:54:28 +020027
28/* Registers */
29#define RAVB_REG_CCC 0x000
30#define RAVB_REG_DBAT 0x004
31#define RAVB_REG_CSR 0x00C
32#define RAVB_REG_APSR 0x08C
33#define RAVB_REG_RCR 0x090
34#define RAVB_REG_TGC 0x300
35#define RAVB_REG_TCCR 0x304
36#define RAVB_REG_RIC0 0x360
37#define RAVB_REG_RIC1 0x368
38#define RAVB_REG_RIC2 0x370
39#define RAVB_REG_TIC 0x378
40#define RAVB_REG_ECMR 0x500
41#define RAVB_REG_RFLR 0x508
42#define RAVB_REG_ECSIPR 0x518
43#define RAVB_REG_PIR 0x520
44#define RAVB_REG_GECMR 0x5b0
45#define RAVB_REG_MAHR 0x5c0
46#define RAVB_REG_MALR 0x5c8
47
48#define CCC_OPC_CONFIG BIT(0)
49#define CCC_OPC_OPERATION BIT(1)
50#define CCC_BOC BIT(20)
51
52#define CSR_OPS 0x0000000F
53#define CSR_OPS_CONFIG BIT(1)
54
Marek Vasut41855122019-04-13 11:42:34 +020055#define APSR_TDM BIT(14)
56
Marek Vasut17714cb2017-05-13 15:54:28 +020057#define TCCR_TSRQ0 BIT(0)
58
59#define RFLR_RFL_MIN 0x05EE
60
61#define PIR_MDI BIT(3)
62#define PIR_MDO BIT(2)
63#define PIR_MMD BIT(1)
64#define PIR_MDC BIT(0)
65
66#define ECMR_TRCCM BIT(26)
67#define ECMR_RZPF BIT(20)
68#define ECMR_PFR BIT(18)
69#define ECMR_RXF BIT(17)
70#define ECMR_RE BIT(6)
71#define ECMR_TE BIT(5)
72#define ECMR_DM BIT(1)
73#define ECMR_CHG_DM (ECMR_TRCCM | ECMR_RZPF | ECMR_PFR | ECMR_RXF)
74
75/* DMA Descriptors */
76#define RAVB_NUM_BASE_DESC 16
77#define RAVB_NUM_TX_DESC 8
78#define RAVB_NUM_RX_DESC 8
79
80#define RAVB_TX_QUEUE_OFFSET 0
81#define RAVB_RX_QUEUE_OFFSET 4
82
83#define RAVB_DESC_DT(n) ((n) << 28)
84#define RAVB_DESC_DT_FSINGLE RAVB_DESC_DT(0x7)
85#define RAVB_DESC_DT_LINKFIX RAVB_DESC_DT(0x9)
86#define RAVB_DESC_DT_EOS RAVB_DESC_DT(0xa)
87#define RAVB_DESC_DT_FEMPTY RAVB_DESC_DT(0xc)
88#define RAVB_DESC_DT_EEMPTY RAVB_DESC_DT(0x3)
89#define RAVB_DESC_DT_MASK RAVB_DESC_DT(0xf)
90
91#define RAVB_DESC_DS(n) (((n) & 0xfff) << 0)
92#define RAVB_DESC_DS_MASK 0xfff
93
94#define RAVB_RX_DESC_MSC_MC BIT(23)
95#define RAVB_RX_DESC_MSC_CEEF BIT(22)
96#define RAVB_RX_DESC_MSC_CRL BIT(21)
97#define RAVB_RX_DESC_MSC_FRE BIT(20)
98#define RAVB_RX_DESC_MSC_RTLF BIT(19)
99#define RAVB_RX_DESC_MSC_RTSF BIT(18)
100#define RAVB_RX_DESC_MSC_RFE BIT(17)
101#define RAVB_RX_DESC_MSC_CRC BIT(16)
102#define RAVB_RX_DESC_MSC_MASK (0xff << 16)
103
104#define RAVB_RX_DESC_MSC_RX_ERR_MASK \
105 (RAVB_RX_DESC_MSC_CRC | RAVB_RX_DESC_MSC_RFE | RAVB_RX_DESC_MSC_RTLF | \
106 RAVB_RX_DESC_MSC_RTSF | RAVB_RX_DESC_MSC_CEEF)
107
108#define RAVB_TX_TIMEOUT_MS 1000
109
110struct ravb_desc {
111 u32 ctrl;
112 u32 dptr;
113};
114
115struct ravb_rxdesc {
116 struct ravb_desc data;
117 struct ravb_desc link;
118 u8 __pad[48];
119 u8 packet[PKTSIZE_ALIGN];
120};
121
122struct ravb_priv {
123 struct ravb_desc base_desc[RAVB_NUM_BASE_DESC];
124 struct ravb_desc tx_desc[RAVB_NUM_TX_DESC];
125 struct ravb_rxdesc rx_desc[RAVB_NUM_RX_DESC];
126 u32 rx_desc_idx;
127 u32 tx_desc_idx;
128
129 struct phy_device *phydev;
130 struct mii_dev *bus;
131 void __iomem *iobase;
Adam Forda4ba7ff2021-12-06 10:29:26 -0600132 struct clk_bulk clks;
Marek Vasut58f49d62017-09-15 21:11:15 +0200133 struct gpio_desc reset_gpio;
Marek Vasut17714cb2017-05-13 15:54:28 +0200134};
135
136static inline void ravb_flush_dcache(u32 addr, u32 len)
137{
138 flush_dcache_range(addr, addr + len);
139}
140
141static inline void ravb_invalidate_dcache(u32 addr, u32 len)
142{
143 u32 start = addr & ~((uintptr_t)ARCH_DMA_MINALIGN - 1);
144 u32 end = roundup(addr + len, ARCH_DMA_MINALIGN);
145 invalidate_dcache_range(start, end);
146}
147
148static int ravb_send(struct udevice *dev, void *packet, int len)
149{
150 struct ravb_priv *eth = dev_get_priv(dev);
151 struct ravb_desc *desc = &eth->tx_desc[eth->tx_desc_idx];
152 unsigned int start;
153
154 /* Update TX descriptor */
155 ravb_flush_dcache((uintptr_t)packet, len);
156 memset(desc, 0x0, sizeof(*desc));
157 desc->ctrl = RAVB_DESC_DT_FSINGLE | RAVB_DESC_DS(len);
158 desc->dptr = (uintptr_t)packet;
159 ravb_flush_dcache((uintptr_t)desc, sizeof(*desc));
160
161 /* Restart the transmitter if disabled */
162 if (!(readl(eth->iobase + RAVB_REG_TCCR) & TCCR_TSRQ0))
163 setbits_le32(eth->iobase + RAVB_REG_TCCR, TCCR_TSRQ0);
164
165 /* Wait until packet is transmitted */
166 start = get_timer(0);
167 while (get_timer(start) < RAVB_TX_TIMEOUT_MS) {
168 ravb_invalidate_dcache((uintptr_t)desc, sizeof(*desc));
169 if ((desc->ctrl & RAVB_DESC_DT_MASK) != RAVB_DESC_DT_FSINGLE)
170 break;
171 udelay(10);
172 };
173
174 if (get_timer(start) >= RAVB_TX_TIMEOUT_MS)
175 return -ETIMEDOUT;
176
177 eth->tx_desc_idx = (eth->tx_desc_idx + 1) % (RAVB_NUM_TX_DESC - 1);
178 return 0;
179}
180
181static int ravb_recv(struct udevice *dev, int flags, uchar **packetp)
182{
183 struct ravb_priv *eth = dev_get_priv(dev);
184 struct ravb_rxdesc *desc = &eth->rx_desc[eth->rx_desc_idx];
185 int len;
186 u8 *packet;
187
188 /* Check if the rx descriptor is ready */
189 ravb_invalidate_dcache((uintptr_t)desc, sizeof(*desc));
190 if ((desc->data.ctrl & RAVB_DESC_DT_MASK) == RAVB_DESC_DT_FEMPTY)
191 return -EAGAIN;
192
193 /* Check for errors */
194 if (desc->data.ctrl & RAVB_RX_DESC_MSC_RX_ERR_MASK) {
195 desc->data.ctrl &= ~RAVB_RX_DESC_MSC_MASK;
196 return -EAGAIN;
197 }
198
199 len = desc->data.ctrl & RAVB_DESC_DS_MASK;
200 packet = (u8 *)(uintptr_t)desc->data.dptr;
201 ravb_invalidate_dcache((uintptr_t)packet, len);
202
203 *packetp = packet;
204 return len;
205}
206
207static int ravb_free_pkt(struct udevice *dev, uchar *packet, int length)
208{
209 struct ravb_priv *eth = dev_get_priv(dev);
210 struct ravb_rxdesc *desc = &eth->rx_desc[eth->rx_desc_idx];
211
212 /* Make current descriptor available again */
213 desc->data.ctrl = RAVB_DESC_DT_FEMPTY | RAVB_DESC_DS(PKTSIZE_ALIGN);
214 ravb_flush_dcache((uintptr_t)desc, sizeof(*desc));
215
216 /* Point to the next descriptor */
217 eth->rx_desc_idx = (eth->rx_desc_idx + 1) % RAVB_NUM_RX_DESC;
218 desc = &eth->rx_desc[eth->rx_desc_idx];
219 ravb_invalidate_dcache((uintptr_t)desc, sizeof(*desc));
220
221 return 0;
222}
223
224static int ravb_reset(struct udevice *dev)
225{
226 struct ravb_priv *eth = dev_get_priv(dev);
227
228 /* Set config mode */
229 writel(CCC_OPC_CONFIG, eth->iobase + RAVB_REG_CCC);
230
231 /* Check the operating mode is changed to the config mode. */
Álvaro Fernández Rojas918de032018-01-23 17:14:55 +0100232 return wait_for_bit_le32(eth->iobase + RAVB_REG_CSR,
233 CSR_OPS_CONFIG, true, 100, true);
Marek Vasut17714cb2017-05-13 15:54:28 +0200234}
235
236static void ravb_base_desc_init(struct ravb_priv *eth)
237{
238 const u32 desc_size = RAVB_NUM_BASE_DESC * sizeof(struct ravb_desc);
239 int i;
240
241 /* Initialize all descriptors */
242 memset(eth->base_desc, 0x0, desc_size);
243
244 for (i = 0; i < RAVB_NUM_BASE_DESC; i++)
245 eth->base_desc[i].ctrl = RAVB_DESC_DT_EOS;
246
247 ravb_flush_dcache((uintptr_t)eth->base_desc, desc_size);
248
249 /* Register the descriptor base address table */
250 writel((uintptr_t)eth->base_desc, eth->iobase + RAVB_REG_DBAT);
251}
252
253static void ravb_tx_desc_init(struct ravb_priv *eth)
254{
255 const u32 desc_size = RAVB_NUM_TX_DESC * sizeof(struct ravb_desc);
256 int i;
257
258 /* Initialize all descriptors */
259 memset(eth->tx_desc, 0x0, desc_size);
260 eth->tx_desc_idx = 0;
261
262 for (i = 0; i < RAVB_NUM_TX_DESC; i++)
263 eth->tx_desc[i].ctrl = RAVB_DESC_DT_EEMPTY;
264
265 /* Mark the end of the descriptors */
266 eth->tx_desc[RAVB_NUM_TX_DESC - 1].ctrl = RAVB_DESC_DT_LINKFIX;
267 eth->tx_desc[RAVB_NUM_TX_DESC - 1].dptr = (uintptr_t)eth->tx_desc;
268 ravb_flush_dcache((uintptr_t)eth->tx_desc, desc_size);
269
270 /* Point the controller to the TX descriptor list. */
271 eth->base_desc[RAVB_TX_QUEUE_OFFSET].ctrl = RAVB_DESC_DT_LINKFIX;
272 eth->base_desc[RAVB_TX_QUEUE_OFFSET].dptr = (uintptr_t)eth->tx_desc;
273 ravb_flush_dcache((uintptr_t)&eth->base_desc[RAVB_TX_QUEUE_OFFSET],
274 sizeof(struct ravb_desc));
275}
276
277static void ravb_rx_desc_init(struct ravb_priv *eth)
278{
279 const u32 desc_size = RAVB_NUM_RX_DESC * sizeof(struct ravb_rxdesc);
280 int i;
281
282 /* Initialize all descriptors */
283 memset(eth->rx_desc, 0x0, desc_size);
284 eth->rx_desc_idx = 0;
285
286 for (i = 0; i < RAVB_NUM_RX_DESC; i++) {
287 eth->rx_desc[i].data.ctrl = RAVB_DESC_DT_EEMPTY |
288 RAVB_DESC_DS(PKTSIZE_ALIGN);
289 eth->rx_desc[i].data.dptr = (uintptr_t)eth->rx_desc[i].packet;
290
291 eth->rx_desc[i].link.ctrl = RAVB_DESC_DT_LINKFIX;
292 eth->rx_desc[i].link.dptr = (uintptr_t)&eth->rx_desc[i + 1];
293 }
294
295 /* Mark the end of the descriptors */
296 eth->rx_desc[RAVB_NUM_RX_DESC - 1].link.ctrl = RAVB_DESC_DT_LINKFIX;
297 eth->rx_desc[RAVB_NUM_RX_DESC - 1].link.dptr = (uintptr_t)eth->rx_desc;
298 ravb_flush_dcache((uintptr_t)eth->rx_desc, desc_size);
299
300 /* Point the controller to the rx descriptor list */
301 eth->base_desc[RAVB_RX_QUEUE_OFFSET].ctrl = RAVB_DESC_DT_LINKFIX;
302 eth->base_desc[RAVB_RX_QUEUE_OFFSET].dptr = (uintptr_t)eth->rx_desc;
303 ravb_flush_dcache((uintptr_t)&eth->base_desc[RAVB_RX_QUEUE_OFFSET],
304 sizeof(struct ravb_desc));
305}
306
307static int ravb_phy_config(struct udevice *dev)
308{
309 struct ravb_priv *eth = dev_get_priv(dev);
Simon Glassfa20e932020-12-03 16:55:20 -0700310 struct eth_pdata *pdata = dev_get_plat(dev);
Marek Vasut17714cb2017-05-13 15:54:28 +0200311 struct phy_device *phydev;
Marek Vasutfbde41d2017-07-21 23:20:34 +0200312 int mask = 0xffffffff, reg;
Marek Vasut17714cb2017-05-13 15:54:28 +0200313
Marek Vasut58f49d62017-09-15 21:11:15 +0200314 if (dm_gpio_is_valid(&eth->reset_gpio)) {
315 dm_gpio_set_value(&eth->reset_gpio, 1);
316 mdelay(20);
317 dm_gpio_set_value(&eth->reset_gpio, 0);
318 mdelay(1);
319 }
320
Marek Vasutfbde41d2017-07-21 23:20:34 +0200321 phydev = phy_find_by_mask(eth->bus, mask, pdata->phy_interface);
Marek Vasut17714cb2017-05-13 15:54:28 +0200322 if (!phydev)
323 return -ENODEV;
324
Marek Vasutfbde41d2017-07-21 23:20:34 +0200325 phy_connect_dev(phydev, dev);
326
Marek Vasut17714cb2017-05-13 15:54:28 +0200327 eth->phydev = phydev;
328
Marek Vasut882294d2018-06-18 05:44:53 +0200329 phydev->supported &= SUPPORTED_100baseT_Full |
330 SUPPORTED_1000baseT_Full | SUPPORTED_Autoneg |
331 SUPPORTED_TP | SUPPORTED_MII | SUPPORTED_Pause |
332 SUPPORTED_Asym_Pause;
333
Marek Vasut17714cb2017-05-13 15:54:28 +0200334 if (pdata->max_speed != 1000) {
Marek Vasut882294d2018-06-18 05:44:53 +0200335 phydev->supported &= ~SUPPORTED_1000baseT_Full;
Marek Vasut17714cb2017-05-13 15:54:28 +0200336 reg = phy_read(phydev, -1, MII_CTRL1000);
337 reg &= ~(BIT(9) | BIT(8));
338 phy_write(phydev, -1, MII_CTRL1000, reg);
339 }
340
341 phy_config(phydev);
342
343 return 0;
344}
345
346/* Set Mac address */
347static int ravb_write_hwaddr(struct udevice *dev)
348{
349 struct ravb_priv *eth = dev_get_priv(dev);
Simon Glassfa20e932020-12-03 16:55:20 -0700350 struct eth_pdata *pdata = dev_get_plat(dev);
Marek Vasut17714cb2017-05-13 15:54:28 +0200351 unsigned char *mac = pdata->enetaddr;
352
353 writel((mac[0] << 24) | (mac[1] << 16) | (mac[2] << 8) | mac[3],
354 eth->iobase + RAVB_REG_MAHR);
355
356 writel((mac[4] << 8) | mac[5], eth->iobase + RAVB_REG_MALR);
357
358 return 0;
359}
360
361/* E-MAC init function */
362static int ravb_mac_init(struct ravb_priv *eth)
363{
364 /* Disable MAC Interrupt */
365 writel(0, eth->iobase + RAVB_REG_ECSIPR);
366
367 /* Recv frame limit set register */
368 writel(RFLR_RFL_MIN, eth->iobase + RAVB_REG_RFLR);
369
370 return 0;
371}
372
373/* AVB-DMAC init function */
374static int ravb_dmac_init(struct udevice *dev)
375{
376 struct ravb_priv *eth = dev_get_priv(dev);
Simon Glassfa20e932020-12-03 16:55:20 -0700377 struct eth_pdata *pdata = dev_get_plat(dev);
Marek Vasut17714cb2017-05-13 15:54:28 +0200378 int ret = 0;
379
380 /* Set CONFIG mode */
381 ret = ravb_reset(dev);
382 if (ret)
383 return ret;
384
385 /* Disable all interrupts */
386 writel(0, eth->iobase + RAVB_REG_RIC0);
387 writel(0, eth->iobase + RAVB_REG_RIC1);
388 writel(0, eth->iobase + RAVB_REG_RIC2);
389 writel(0, eth->iobase + RAVB_REG_TIC);
390
391 /* Set little endian */
392 clrbits_le32(eth->iobase + RAVB_REG_CCC, CCC_BOC);
393
394 /* AVB rx set */
395 writel(0x18000001, eth->iobase + RAVB_REG_RCR);
396
397 /* FIFO size set */
398 writel(0x00222210, eth->iobase + RAVB_REG_TGC);
399
Marek Vasut41855122019-04-13 11:42:34 +0200400 /* Delay CLK: 2ns (not applicable on R-Car E3/D3) */
401 if ((rmobile_get_cpu_type() == RMOBILE_CPU_TYPE_R8A77990) ||
402 (rmobile_get_cpu_type() == RMOBILE_CPU_TYPE_R8A77995))
403 return 0;
404
405 if ((pdata->phy_interface == PHY_INTERFACE_MODE_RGMII_ID) ||
406 (pdata->phy_interface == PHY_INTERFACE_MODE_RGMII_TXID))
407 writel(APSR_TDM, eth->iobase + RAVB_REG_APSR);
Marek Vasut17714cb2017-05-13 15:54:28 +0200408
409 return 0;
410}
411
412static int ravb_config(struct udevice *dev)
413{
414 struct ravb_priv *eth = dev_get_priv(dev);
Marek Vasut3364d7a2018-02-13 17:21:15 +0100415 struct phy_device *phy = eth->phydev;
Marek Vasut17714cb2017-05-13 15:54:28 +0200416 u32 mask = ECMR_CHG_DM | ECMR_RE | ECMR_TE;
417 int ret;
418
419 /* Configure AVB-DMAC register */
420 ravb_dmac_init(dev);
421
422 /* Configure E-MAC registers */
423 ravb_mac_init(eth);
424 ravb_write_hwaddr(dev);
425
Marek Vasut17714cb2017-05-13 15:54:28 +0200426 ret = phy_startup(phy);
427 if (ret)
428 return ret;
429
430 /* Set the transfer speed */
431 if (phy->speed == 100)
432 writel(0, eth->iobase + RAVB_REG_GECMR);
433 else if (phy->speed == 1000)
434 writel(1, eth->iobase + RAVB_REG_GECMR);
435
436 /* Check if full duplex mode is supported by the phy */
437 if (phy->duplex)
438 mask |= ECMR_DM;
439
440 writel(mask, eth->iobase + RAVB_REG_ECMR);
441
Marek Vasut17714cb2017-05-13 15:54:28 +0200442 return 0;
443}
444
Marek Vasut7457ce92018-01-19 23:58:32 +0100445static int ravb_start(struct udevice *dev)
Marek Vasut17714cb2017-05-13 15:54:28 +0200446{
447 struct ravb_priv *eth = dev_get_priv(dev);
448 int ret;
449
Marek Vasutc9746c62017-07-21 23:20:35 +0200450 ret = ravb_reset(dev);
451 if (ret)
Marek Vasut597e0072018-06-18 09:35:45 +0200452 return ret;
Marek Vasutc9746c62017-07-21 23:20:35 +0200453
Marek Vasut17714cb2017-05-13 15:54:28 +0200454 ravb_base_desc_init(eth);
455 ravb_tx_desc_init(eth);
456 ravb_rx_desc_init(eth);
457
458 ret = ravb_config(dev);
459 if (ret)
Marek Vasut597e0072018-06-18 09:35:45 +0200460 return ret;
Marek Vasut17714cb2017-05-13 15:54:28 +0200461
462 /* Setting the control will start the AVB-DMAC process. */
463 writel(CCC_OPC_OPERATION, eth->iobase + RAVB_REG_CCC);
464
465 return 0;
466}
467
468static void ravb_stop(struct udevice *dev)
469{
Marek Vasutc9746c62017-07-21 23:20:35 +0200470 struct ravb_priv *eth = dev_get_priv(dev);
471
Marek Vasut3364d7a2018-02-13 17:21:15 +0100472 phy_shutdown(eth->phydev);
Marek Vasut17714cb2017-05-13 15:54:28 +0200473 ravb_reset(dev);
474}
475
476static int ravb_probe(struct udevice *dev)
477{
Simon Glassfa20e932020-12-03 16:55:20 -0700478 struct eth_pdata *pdata = dev_get_plat(dev);
Marek Vasut17714cb2017-05-13 15:54:28 +0200479 struct ravb_priv *eth = dev_get_priv(dev);
Marek Vasutd422d5c2018-06-18 04:02:15 +0200480 struct ofnode_phandle_args phandle_args;
Marek Vasut17714cb2017-05-13 15:54:28 +0200481 struct mii_dev *mdiodev;
482 void __iomem *iobase;
483 int ret;
484
485 iobase = map_physmem(pdata->iobase, 0x1000, MAP_NOCACHE);
486 eth->iobase = iobase;
487
Adam Forda4ba7ff2021-12-06 10:29:26 -0600488 ret = clk_get_bulk(dev, &eth->clks);
Marek Vasutc9746c62017-07-21 23:20:35 +0200489 if (ret < 0)
490 goto err_mdio_alloc;
491
Marek Vasutd422d5c2018-06-18 04:02:15 +0200492 ret = dev_read_phandle_with_args(dev, "phy-handle", NULL, 0, 0, &phandle_args);
493 if (!ret) {
494 gpio_request_by_name_nodev(phandle_args.node, "reset-gpios", 0,
495 &eth->reset_gpio, GPIOD_IS_OUT);
496 }
497
498 if (!dm_gpio_is_valid(&eth->reset_gpio)) {
499 gpio_request_by_name(dev, "reset-gpios", 0, &eth->reset_gpio,
500 GPIOD_IS_OUT);
501 }
Marek Vasut58f49d62017-09-15 21:11:15 +0200502
Marek Vasut17714cb2017-05-13 15:54:28 +0200503 mdiodev = mdio_alloc();
504 if (!mdiodev) {
505 ret = -ENOMEM;
506 goto err_mdio_alloc;
507 }
508
509 mdiodev->read = bb_miiphy_read;
510 mdiodev->write = bb_miiphy_write;
511 bb_miiphy_buses[0].priv = eth;
512 snprintf(mdiodev->name, sizeof(mdiodev->name), dev->name);
513
514 ret = mdio_register(mdiodev);
515 if (ret < 0)
516 goto err_mdio_register;
517
518 eth->bus = miiphy_get_dev_by_name(dev->name);
519
Marek Vasut3364d7a2018-02-13 17:21:15 +0100520 /* Bring up PHY */
Adam Forda4ba7ff2021-12-06 10:29:26 -0600521 ret = clk_enable_bulk(&eth->clks);
Marek Vasut3364d7a2018-02-13 17:21:15 +0100522 if (ret)
523 goto err_mdio_register;
524
525 ret = ravb_reset(dev);
526 if (ret)
527 goto err_mdio_reset;
528
529 ret = ravb_phy_config(dev);
530 if (ret)
531 goto err_mdio_reset;
532
Marek Vasut17714cb2017-05-13 15:54:28 +0200533 return 0;
534
Marek Vasut3364d7a2018-02-13 17:21:15 +0100535err_mdio_reset:
Adam Forda4ba7ff2021-12-06 10:29:26 -0600536 clk_release_bulk(&eth->clks);
Marek Vasut17714cb2017-05-13 15:54:28 +0200537err_mdio_register:
538 mdio_free(mdiodev);
539err_mdio_alloc:
540 unmap_physmem(eth->iobase, MAP_NOCACHE);
541 return ret;
542}
543
544static int ravb_remove(struct udevice *dev)
545{
546 struct ravb_priv *eth = dev_get_priv(dev);
547
Adam Forda4ba7ff2021-12-06 10:29:26 -0600548 clk_release_bulk(&eth->clks);
Marek Vasut3364d7a2018-02-13 17:21:15 +0100549
Marek Vasut17714cb2017-05-13 15:54:28 +0200550 free(eth->phydev);
551 mdio_unregister(eth->bus);
552 mdio_free(eth->bus);
Marek Vasuteb7c7822017-11-09 22:49:19 +0100553 if (dm_gpio_is_valid(&eth->reset_gpio))
554 dm_gpio_free(dev, &eth->reset_gpio);
Marek Vasut17714cb2017-05-13 15:54:28 +0200555 unmap_physmem(eth->iobase, MAP_NOCACHE);
556
557 return 0;
558}
559
560int ravb_bb_init(struct bb_miiphy_bus *bus)
561{
562 return 0;
563}
564
565int ravb_bb_mdio_active(struct bb_miiphy_bus *bus)
566{
567 struct ravb_priv *eth = bus->priv;
568
569 setbits_le32(eth->iobase + RAVB_REG_PIR, PIR_MMD);
570
571 return 0;
572}
573
574int ravb_bb_mdio_tristate(struct bb_miiphy_bus *bus)
575{
576 struct ravb_priv *eth = bus->priv;
577
578 clrbits_le32(eth->iobase + RAVB_REG_PIR, PIR_MMD);
579
580 return 0;
581}
582
583int ravb_bb_set_mdio(struct bb_miiphy_bus *bus, int v)
584{
585 struct ravb_priv *eth = bus->priv;
586
587 if (v)
588 setbits_le32(eth->iobase + RAVB_REG_PIR, PIR_MDO);
589 else
590 clrbits_le32(eth->iobase + RAVB_REG_PIR, PIR_MDO);
591
592 return 0;
593}
594
595int ravb_bb_get_mdio(struct bb_miiphy_bus *bus, int *v)
596{
597 struct ravb_priv *eth = bus->priv;
598
599 *v = (readl(eth->iobase + RAVB_REG_PIR) & PIR_MDI) >> 3;
600
601 return 0;
602}
603
604int ravb_bb_set_mdc(struct bb_miiphy_bus *bus, int v)
605{
606 struct ravb_priv *eth = bus->priv;
607
608 if (v)
609 setbits_le32(eth->iobase + RAVB_REG_PIR, PIR_MDC);
610 else
611 clrbits_le32(eth->iobase + RAVB_REG_PIR, PIR_MDC);
612
613 return 0;
614}
615
616int ravb_bb_delay(struct bb_miiphy_bus *bus)
617{
618 udelay(10);
619
620 return 0;
621}
622
623struct bb_miiphy_bus bb_miiphy_buses[] = {
624 {
625 .name = "ravb",
626 .init = ravb_bb_init,
627 .mdio_active = ravb_bb_mdio_active,
628 .mdio_tristate = ravb_bb_mdio_tristate,
629 .set_mdio = ravb_bb_set_mdio,
630 .get_mdio = ravb_bb_get_mdio,
631 .set_mdc = ravb_bb_set_mdc,
632 .delay = ravb_bb_delay,
633 },
634};
635int bb_miiphy_buses_num = ARRAY_SIZE(bb_miiphy_buses);
636
637static const struct eth_ops ravb_ops = {
638 .start = ravb_start,
639 .send = ravb_send,
640 .recv = ravb_recv,
641 .free_pkt = ravb_free_pkt,
642 .stop = ravb_stop,
643 .write_hwaddr = ravb_write_hwaddr,
644};
645
Simon Glassaad29ae2020-12-03 16:55:21 -0700646int ravb_of_to_plat(struct udevice *dev)
Marek Vasut934fd3b2017-07-21 23:20:33 +0200647{
Simon Glassfa20e932020-12-03 16:55:20 -0700648 struct eth_pdata *pdata = dev_get_plat(dev);
Marek Vasut934fd3b2017-07-21 23:20:33 +0200649 const char *phy_mode;
650 const fdt32_t *cell;
651 int ret = 0;
652
Masahiro Yamadaa89b4de2020-07-17 14:36:48 +0900653 pdata->iobase = dev_read_addr(dev);
Marek Vasut934fd3b2017-07-21 23:20:33 +0200654 pdata->phy_interface = -1;
655 phy_mode = fdt_getprop(gd->fdt_blob, dev_of_offset(dev), "phy-mode",
656 NULL);
657 if (phy_mode)
658 pdata->phy_interface = phy_get_interface_by_name(phy_mode);
659 if (pdata->phy_interface == -1) {
660 debug("%s: Invalid PHY interface '%s'\n", __func__, phy_mode);
661 return -EINVAL;
662 }
663
664 pdata->max_speed = 1000;
665 cell = fdt_getprop(gd->fdt_blob, dev_of_offset(dev), "max-speed", NULL);
666 if (cell)
667 pdata->max_speed = fdt32_to_cpu(*cell);
668
669 sprintf(bb_miiphy_buses[0].name, dev->name);
670
671 return ret;
672}
673
674static const struct udevice_id ravb_ids[] = {
675 { .compatible = "renesas,etheravb-r8a7795" },
676 { .compatible = "renesas,etheravb-r8a7796" },
Marek Vasut070782f2018-02-26 10:35:15 +0100677 { .compatible = "renesas,etheravb-r8a77965" },
Marek Vasut2d3ec642017-10-21 11:33:17 +0200678 { .compatible = "renesas,etheravb-r8a77970" },
Marek Vasut1c440172018-04-26 13:20:10 +0200679 { .compatible = "renesas,etheravb-r8a77990" },
Marek Vasut42832fe2017-10-21 11:35:49 +0200680 { .compatible = "renesas,etheravb-r8a77995" },
Marek Vasut934fd3b2017-07-21 23:20:33 +0200681 { .compatible = "renesas,etheravb-rcar-gen3" },
682 { }
683};
684
Marek Vasut17714cb2017-05-13 15:54:28 +0200685U_BOOT_DRIVER(eth_ravb) = {
686 .name = "ravb",
687 .id = UCLASS_ETH,
Marek Vasut934fd3b2017-07-21 23:20:33 +0200688 .of_match = ravb_ids,
Simon Glassaad29ae2020-12-03 16:55:21 -0700689 .of_to_plat = ravb_of_to_plat,
Marek Vasut17714cb2017-05-13 15:54:28 +0200690 .probe = ravb_probe,
691 .remove = ravb_remove,
692 .ops = &ravb_ops,
Simon Glass8a2b47f2020-12-03 16:55:17 -0700693 .priv_auto = sizeof(struct ravb_priv),
Simon Glass71fa5b42020-12-03 16:55:18 -0700694 .plat_auto = sizeof(struct eth_pdata),
Marek Vasut17714cb2017-05-13 15:54:28 +0200695 .flags = DM_FLAG_ALLOC_PRIV_DMA,
696};