Tom Rini | 83d290c | 2018-05-06 17:58:06 -0400 | [diff] [blame] | 1 | // SPDX-License-Identifier: GPL-2.0+ |
Marek Vasut | 8ae51b6 | 2017-05-13 15:54:28 +0200 | [diff] [blame] | 2 | /* |
| 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 Vasut | 8ae51b6 | 2017-05-13 15:54:28 +0200 | [diff] [blame] | 9 | */ |
| 10 | |
| 11 | #include <common.h> |
Marek Vasut | 1fea9e2 | 2017-07-21 23:20:35 +0200 | [diff] [blame] | 12 | #include <clk.h> |
Simon Glass | 1eb69ae | 2019-11-14 12:57:39 -0700 | [diff] [blame] | 13 | #include <cpu_func.h> |
Marek Vasut | 8ae51b6 | 2017-05-13 15:54:28 +0200 | [diff] [blame] | 14 | #include <dm.h> |
| 15 | #include <errno.h> |
Simon Glass | f7ae49f | 2020-05-10 11:40:05 -0600 | [diff] [blame] | 16 | #include <log.h> |
Marek Vasut | 8ae51b6 | 2017-05-13 15:54:28 +0200 | [diff] [blame] | 17 | #include <miiphy.h> |
| 18 | #include <malloc.h> |
Simon Glass | 90526e9 | 2020-05-10 11:39:56 -0600 | [diff] [blame] | 19 | #include <asm/cache.h> |
Simon Glass | cd93d62 | 2020-05-10 11:40:13 -0600 | [diff] [blame] | 20 | #include <linux/bitops.h> |
Simon Glass | c05ed00 | 2020-05-10 11:40:11 -0600 | [diff] [blame] | 21 | #include <linux/delay.h> |
Marek Vasut | 8ae51b6 | 2017-05-13 15:54:28 +0200 | [diff] [blame] | 22 | #include <linux/mii.h> |
| 23 | #include <wait_bit.h> |
| 24 | #include <asm/io.h> |
Simon Glass | 401d1c4 | 2020-10-30 21:38:53 -0600 | [diff] [blame] | 25 | #include <asm/global_data.h> |
Marek Vasut | bddb44e | 2017-09-15 21:11:15 +0200 | [diff] [blame] | 26 | #include <asm/gpio.h> |
Marek Vasut | 8ae51b6 | 2017-05-13 15:54:28 +0200 | [diff] [blame] | 27 | |
| 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 Vasut | ef8c878 | 2019-04-13 11:42:34 +0200 | [diff] [blame] | 55 | #define APSR_TDM BIT(14) |
| 56 | |
Marek Vasut | 8ae51b6 | 2017-05-13 15:54:28 +0200 | [diff] [blame] | 57 | #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 | |
| 110 | struct ravb_desc { |
| 111 | u32 ctrl; |
| 112 | u32 dptr; |
| 113 | }; |
| 114 | |
| 115 | struct ravb_rxdesc { |
| 116 | struct ravb_desc data; |
| 117 | struct ravb_desc link; |
| 118 | u8 __pad[48]; |
| 119 | u8 packet[PKTSIZE_ALIGN]; |
| 120 | }; |
| 121 | |
| 122 | struct 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 Ford | 182754f | 2021-12-06 10:29:26 -0600 | [diff] [blame] | 132 | struct clk_bulk clks; |
Marek Vasut | bddb44e | 2017-09-15 21:11:15 +0200 | [diff] [blame] | 133 | struct gpio_desc reset_gpio; |
Marek Vasut | 8ae51b6 | 2017-05-13 15:54:28 +0200 | [diff] [blame] | 134 | }; |
| 135 | |
| 136 | static inline void ravb_flush_dcache(u32 addr, u32 len) |
| 137 | { |
| 138 | flush_dcache_range(addr, addr + len); |
| 139 | } |
| 140 | |
| 141 | static 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 | |
| 148 | static 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 = ð->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 | |
| 181 | static 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 = ð->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 | |
| 207 | static 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 = ð->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 = ð->rx_desc[eth->rx_desc_idx]; |
| 219 | ravb_invalidate_dcache((uintptr_t)desc, sizeof(*desc)); |
| 220 | |
| 221 | return 0; |
| 222 | } |
| 223 | |
| 224 | static 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 Rojas | 4826350 | 2018-01-23 17:14:55 +0100 | [diff] [blame] | 232 | return wait_for_bit_le32(eth->iobase + RAVB_REG_CSR, |
| 233 | CSR_OPS_CONFIG, true, 100, true); |
Marek Vasut | 8ae51b6 | 2017-05-13 15:54:28 +0200 | [diff] [blame] | 234 | } |
| 235 | |
| 236 | static 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 | |
| 253 | static 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)ð->base_desc[RAVB_TX_QUEUE_OFFSET], |
| 274 | sizeof(struct ravb_desc)); |
| 275 | } |
| 276 | |
| 277 | static 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)ð->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)ð->base_desc[RAVB_RX_QUEUE_OFFSET], |
| 304 | sizeof(struct ravb_desc)); |
| 305 | } |
| 306 | |
| 307 | static int ravb_phy_config(struct udevice *dev) |
| 308 | { |
| 309 | struct ravb_priv *eth = dev_get_priv(dev); |
Simon Glass | c69cda2 | 2020-12-03 16:55:20 -0700 | [diff] [blame] | 310 | struct eth_pdata *pdata = dev_get_plat(dev); |
Marek Vasut | 8ae51b6 | 2017-05-13 15:54:28 +0200 | [diff] [blame] | 311 | struct phy_device *phydev; |
Marek Vasut | e821a7b | 2017-07-21 23:20:34 +0200 | [diff] [blame] | 312 | int mask = 0xffffffff, reg; |
Marek Vasut | 8ae51b6 | 2017-05-13 15:54:28 +0200 | [diff] [blame] | 313 | |
Marek Vasut | bddb44e | 2017-09-15 21:11:15 +0200 | [diff] [blame] | 314 | if (dm_gpio_is_valid(ð->reset_gpio)) { |
| 315 | dm_gpio_set_value(ð->reset_gpio, 1); |
| 316 | mdelay(20); |
| 317 | dm_gpio_set_value(ð->reset_gpio, 0); |
| 318 | mdelay(1); |
| 319 | } |
| 320 | |
Marek Vasut | e821a7b | 2017-07-21 23:20:34 +0200 | [diff] [blame] | 321 | phydev = phy_find_by_mask(eth->bus, mask, pdata->phy_interface); |
Marek Vasut | 8ae51b6 | 2017-05-13 15:54:28 +0200 | [diff] [blame] | 322 | if (!phydev) |
| 323 | return -ENODEV; |
| 324 | |
Marek Vasut | e821a7b | 2017-07-21 23:20:34 +0200 | [diff] [blame] | 325 | phy_connect_dev(phydev, dev); |
| 326 | |
Marek Vasut | 8ae51b6 | 2017-05-13 15:54:28 +0200 | [diff] [blame] | 327 | eth->phydev = phydev; |
| 328 | |
Marek Vasut | 536fb5d | 2018-06-18 05:44:53 +0200 | [diff] [blame] | 329 | phydev->supported &= SUPPORTED_100baseT_Full | |
| 330 | SUPPORTED_1000baseT_Full | SUPPORTED_Autoneg | |
| 331 | SUPPORTED_TP | SUPPORTED_MII | SUPPORTED_Pause | |
| 332 | SUPPORTED_Asym_Pause; |
| 333 | |
Marek Vasut | 8ae51b6 | 2017-05-13 15:54:28 +0200 | [diff] [blame] | 334 | if (pdata->max_speed != 1000) { |
Marek Vasut | 536fb5d | 2018-06-18 05:44:53 +0200 | [diff] [blame] | 335 | phydev->supported &= ~SUPPORTED_1000baseT_Full; |
Marek Vasut | 8ae51b6 | 2017-05-13 15:54:28 +0200 | [diff] [blame] | 336 | 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 */ |
| 347 | static int ravb_write_hwaddr(struct udevice *dev) |
| 348 | { |
| 349 | struct ravb_priv *eth = dev_get_priv(dev); |
Simon Glass | c69cda2 | 2020-12-03 16:55:20 -0700 | [diff] [blame] | 350 | struct eth_pdata *pdata = dev_get_plat(dev); |
Marek Vasut | 8ae51b6 | 2017-05-13 15:54:28 +0200 | [diff] [blame] | 351 | 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 */ |
| 362 | static 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 */ |
| 374 | static int ravb_dmac_init(struct udevice *dev) |
| 375 | { |
| 376 | struct ravb_priv *eth = dev_get_priv(dev); |
Simon Glass | c69cda2 | 2020-12-03 16:55:20 -0700 | [diff] [blame] | 377 | struct eth_pdata *pdata = dev_get_plat(dev); |
Marek Vasut | 8ae51b6 | 2017-05-13 15:54:28 +0200 | [diff] [blame] | 378 | 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 Vasut | ef8c878 | 2019-04-13 11:42:34 +0200 | [diff] [blame] | 400 | /* 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 Vasut | 8ae51b6 | 2017-05-13 15:54:28 +0200 | [diff] [blame] | 408 | |
| 409 | return 0; |
| 410 | } |
| 411 | |
| 412 | static int ravb_config(struct udevice *dev) |
| 413 | { |
| 414 | struct ravb_priv *eth = dev_get_priv(dev); |
Marek Vasut | d64c789 | 2018-02-13 17:21:15 +0100 | [diff] [blame] | 415 | struct phy_device *phy = eth->phydev; |
Marek Vasut | 8ae51b6 | 2017-05-13 15:54:28 +0200 | [diff] [blame] | 416 | 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 Vasut | 8ae51b6 | 2017-05-13 15:54:28 +0200 | [diff] [blame] | 426 | 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 Vasut | 8ae51b6 | 2017-05-13 15:54:28 +0200 | [diff] [blame] | 442 | return 0; |
| 443 | } |
| 444 | |
Marek Vasut | e3105ea | 2018-01-19 23:58:32 +0100 | [diff] [blame] | 445 | static int ravb_start(struct udevice *dev) |
Marek Vasut | 8ae51b6 | 2017-05-13 15:54:28 +0200 | [diff] [blame] | 446 | { |
| 447 | struct ravb_priv *eth = dev_get_priv(dev); |
| 448 | int ret; |
| 449 | |
Marek Vasut | 1fea9e2 | 2017-07-21 23:20:35 +0200 | [diff] [blame] | 450 | ret = ravb_reset(dev); |
| 451 | if (ret) |
Marek Vasut | c4a8d9c | 2018-06-18 09:35:45 +0200 | [diff] [blame] | 452 | return ret; |
Marek Vasut | 1fea9e2 | 2017-07-21 23:20:35 +0200 | [diff] [blame] | 453 | |
Marek Vasut | 8ae51b6 | 2017-05-13 15:54:28 +0200 | [diff] [blame] | 454 | 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 Vasut | c4a8d9c | 2018-06-18 09:35:45 +0200 | [diff] [blame] | 460 | return ret; |
Marek Vasut | 8ae51b6 | 2017-05-13 15:54:28 +0200 | [diff] [blame] | 461 | |
| 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 | |
| 468 | static void ravb_stop(struct udevice *dev) |
| 469 | { |
Marek Vasut | 1fea9e2 | 2017-07-21 23:20:35 +0200 | [diff] [blame] | 470 | struct ravb_priv *eth = dev_get_priv(dev); |
| 471 | |
Marek Vasut | d64c789 | 2018-02-13 17:21:15 +0100 | [diff] [blame] | 472 | phy_shutdown(eth->phydev); |
Marek Vasut | 8ae51b6 | 2017-05-13 15:54:28 +0200 | [diff] [blame] | 473 | ravb_reset(dev); |
| 474 | } |
| 475 | |
| 476 | static int ravb_probe(struct udevice *dev) |
| 477 | { |
Simon Glass | c69cda2 | 2020-12-03 16:55:20 -0700 | [diff] [blame] | 478 | struct eth_pdata *pdata = dev_get_plat(dev); |
Marek Vasut | 8ae51b6 | 2017-05-13 15:54:28 +0200 | [diff] [blame] | 479 | struct ravb_priv *eth = dev_get_priv(dev); |
Marek Vasut | 701db6e | 2018-06-18 04:02:15 +0200 | [diff] [blame] | 480 | struct ofnode_phandle_args phandle_args; |
Marek Vasut | 8ae51b6 | 2017-05-13 15:54:28 +0200 | [diff] [blame] | 481 | 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 Ford | 182754f | 2021-12-06 10:29:26 -0600 | [diff] [blame] | 488 | ret = clk_get_bulk(dev, ð->clks); |
Marek Vasut | 1fea9e2 | 2017-07-21 23:20:35 +0200 | [diff] [blame] | 489 | if (ret < 0) |
| 490 | goto err_mdio_alloc; |
| 491 | |
Marek Vasut | 701db6e | 2018-06-18 04:02:15 +0200 | [diff] [blame] | 492 | 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 | ð->reset_gpio, GPIOD_IS_OUT); |
| 496 | } |
| 497 | |
| 498 | if (!dm_gpio_is_valid(ð->reset_gpio)) { |
| 499 | gpio_request_by_name(dev, "reset-gpios", 0, ð->reset_gpio, |
| 500 | GPIOD_IS_OUT); |
| 501 | } |
Marek Vasut | bddb44e | 2017-09-15 21:11:15 +0200 | [diff] [blame] | 502 | |
Marek Vasut | 8ae51b6 | 2017-05-13 15:54:28 +0200 | [diff] [blame] | 503 | 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 Vasut | d64c789 | 2018-02-13 17:21:15 +0100 | [diff] [blame] | 520 | /* Bring up PHY */ |
Adam Ford | 182754f | 2021-12-06 10:29:26 -0600 | [diff] [blame] | 521 | ret = clk_enable_bulk(ð->clks); |
Marek Vasut | d64c789 | 2018-02-13 17:21:15 +0100 | [diff] [blame] | 522 | 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 Vasut | 8ae51b6 | 2017-05-13 15:54:28 +0200 | [diff] [blame] | 533 | return 0; |
| 534 | |
Marek Vasut | d64c789 | 2018-02-13 17:21:15 +0100 | [diff] [blame] | 535 | err_mdio_reset: |
Adam Ford | 182754f | 2021-12-06 10:29:26 -0600 | [diff] [blame] | 536 | clk_release_bulk(ð->clks); |
Marek Vasut | 8ae51b6 | 2017-05-13 15:54:28 +0200 | [diff] [blame] | 537 | err_mdio_register: |
| 538 | mdio_free(mdiodev); |
| 539 | err_mdio_alloc: |
| 540 | unmap_physmem(eth->iobase, MAP_NOCACHE); |
| 541 | return ret; |
| 542 | } |
| 543 | |
| 544 | static int ravb_remove(struct udevice *dev) |
| 545 | { |
| 546 | struct ravb_priv *eth = dev_get_priv(dev); |
| 547 | |
Adam Ford | 182754f | 2021-12-06 10:29:26 -0600 | [diff] [blame] | 548 | clk_release_bulk(ð->clks); |
Marek Vasut | d64c789 | 2018-02-13 17:21:15 +0100 | [diff] [blame] | 549 | |
Marek Vasut | 8ae51b6 | 2017-05-13 15:54:28 +0200 | [diff] [blame] | 550 | free(eth->phydev); |
| 551 | mdio_unregister(eth->bus); |
| 552 | mdio_free(eth->bus); |
Marek Vasut | 90997cd | 2017-11-09 22:49:19 +0100 | [diff] [blame] | 553 | if (dm_gpio_is_valid(ð->reset_gpio)) |
| 554 | dm_gpio_free(dev, ð->reset_gpio); |
Marek Vasut | 8ae51b6 | 2017-05-13 15:54:28 +0200 | [diff] [blame] | 555 | unmap_physmem(eth->iobase, MAP_NOCACHE); |
| 556 | |
| 557 | return 0; |
| 558 | } |
| 559 | |
| 560 | int ravb_bb_init(struct bb_miiphy_bus *bus) |
| 561 | { |
| 562 | return 0; |
| 563 | } |
| 564 | |
| 565 | int 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 | |
| 574 | int 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 | |
| 583 | int 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 | |
| 595 | int 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 | |
| 604 | int 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 | |
| 616 | int ravb_bb_delay(struct bb_miiphy_bus *bus) |
| 617 | { |
| 618 | udelay(10); |
| 619 | |
| 620 | return 0; |
| 621 | } |
| 622 | |
| 623 | struct 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 | }; |
| 635 | int bb_miiphy_buses_num = ARRAY_SIZE(bb_miiphy_buses); |
| 636 | |
| 637 | static 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 Glass | d1998a9 | 2020-12-03 16:55:21 -0700 | [diff] [blame] | 646 | int ravb_of_to_plat(struct udevice *dev) |
Marek Vasut | 5ee8b4d | 2017-07-21 23:20:33 +0200 | [diff] [blame] | 647 | { |
Simon Glass | c69cda2 | 2020-12-03 16:55:20 -0700 | [diff] [blame] | 648 | struct eth_pdata *pdata = dev_get_plat(dev); |
Marek Vasut | 5ee8b4d | 2017-07-21 23:20:33 +0200 | [diff] [blame] | 649 | const char *phy_mode; |
| 650 | const fdt32_t *cell; |
| 651 | int ret = 0; |
| 652 | |
Masahiro Yamada | 2548493 | 2020-07-17 14:36:48 +0900 | [diff] [blame] | 653 | pdata->iobase = dev_read_addr(dev); |
Marek Vasut | 5ee8b4d | 2017-07-21 23:20:33 +0200 | [diff] [blame] | 654 | 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 | |
| 674 | static const struct udevice_id ravb_ids[] = { |
| 675 | { .compatible = "renesas,etheravb-r8a7795" }, |
| 676 | { .compatible = "renesas,etheravb-r8a7796" }, |
Marek Vasut | 7a7081e | 2018-02-26 10:35:15 +0100 | [diff] [blame] | 677 | { .compatible = "renesas,etheravb-r8a77965" }, |
Marek Vasut | dc3bb3d | 2017-10-21 11:33:17 +0200 | [diff] [blame] | 678 | { .compatible = "renesas,etheravb-r8a77970" }, |
Marek Vasut | 34f1dba | 2018-04-26 13:20:10 +0200 | [diff] [blame] | 679 | { .compatible = "renesas,etheravb-r8a77990" }, |
Marek Vasut | 9e4a637 | 2017-10-21 11:35:49 +0200 | [diff] [blame] | 680 | { .compatible = "renesas,etheravb-r8a77995" }, |
Marek Vasut | 5ee8b4d | 2017-07-21 23:20:33 +0200 | [diff] [blame] | 681 | { .compatible = "renesas,etheravb-rcar-gen3" }, |
| 682 | { } |
| 683 | }; |
| 684 | |
Marek Vasut | 8ae51b6 | 2017-05-13 15:54:28 +0200 | [diff] [blame] | 685 | U_BOOT_DRIVER(eth_ravb) = { |
| 686 | .name = "ravb", |
| 687 | .id = UCLASS_ETH, |
Marek Vasut | 5ee8b4d | 2017-07-21 23:20:33 +0200 | [diff] [blame] | 688 | .of_match = ravb_ids, |
Simon Glass | d1998a9 | 2020-12-03 16:55:21 -0700 | [diff] [blame] | 689 | .of_to_plat = ravb_of_to_plat, |
Marek Vasut | 8ae51b6 | 2017-05-13 15:54:28 +0200 | [diff] [blame] | 690 | .probe = ravb_probe, |
| 691 | .remove = ravb_remove, |
| 692 | .ops = &ravb_ops, |
Simon Glass | 41575d8 | 2020-12-03 16:55:17 -0700 | [diff] [blame] | 693 | .priv_auto = sizeof(struct ravb_priv), |
Simon Glass | caa4daa | 2020-12-03 16:55:18 -0700 | [diff] [blame] | 694 | .plat_auto = sizeof(struct eth_pdata), |
Marek Vasut | 8ae51b6 | 2017-05-13 15:54:28 +0200 | [diff] [blame] | 695 | .flags = DM_FLAG_ALLOC_PRIV_DMA, |
| 696 | }; |