altera_tse.c 18 KB

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  1. /*
  2. * Altera 10/100/1000 triple speed ethernet mac driver
  3. *
  4. * Copyright (C) 2008 Altera Corporation.
  5. * Copyright (C) 2010 Thomas Chou <thomas@wytron.com.tw>
  6. *
  7. * This program is free software; you can redistribute it and/or modify
  8. * it under the terms of the GNU General Public License version 2 as
  9. * published by the Free Software Foundation.
  10. */
  11. #include <common.h>
  12. #include <dm.h>
  13. #include <errno.h>
  14. #include <fdt_support.h>
  15. #include <memalign.h>
  16. #include <miiphy.h>
  17. #include <net.h>
  18. #include <asm/cache.h>
  19. #include <asm/dma-mapping.h>
  20. #include <asm/io.h>
  21. #include "altera_tse.h"
  22. DECLARE_GLOBAL_DATA_PTR;
  23. static inline void alt_sgdma_construct_descriptor(
  24. struct alt_sgdma_descriptor *desc,
  25. struct alt_sgdma_descriptor *next,
  26. void *read_addr,
  27. void *write_addr,
  28. u16 length_or_eop,
  29. int generate_eop,
  30. int read_fixed,
  31. int write_fixed_or_sop)
  32. {
  33. u8 val;
  34. /*
  35. * Mark the "next" descriptor as "not" owned by hardware. This prevents
  36. * The SGDMA controller from continuing to process the chain.
  37. */
  38. next->descriptor_control = next->descriptor_control &
  39. ~ALT_SGDMA_DESCRIPTOR_CONTROL_OWNED_BY_HW_MSK;
  40. memset(desc, 0, sizeof(struct alt_sgdma_descriptor));
  41. desc->source = virt_to_phys(read_addr);
  42. desc->destination = virt_to_phys(write_addr);
  43. desc->next = virt_to_phys(next);
  44. desc->bytes_to_transfer = length_or_eop;
  45. /*
  46. * Set the descriptor control block as follows:
  47. * - Set "owned by hardware" bit
  48. * - Optionally set "generate EOP" bit
  49. * - Optionally set the "read from fixed address" bit
  50. * - Optionally set the "write to fixed address bit (which serves
  51. * serves as a "generate SOP" control bit in memory-to-stream mode).
  52. * - Set the 4-bit atlantic channel, if specified
  53. *
  54. * Note this step is performed after all other descriptor information
  55. * has been filled out so that, if the controller already happens to be
  56. * pointing at this descriptor, it will not run (via the "owned by
  57. * hardware" bit) until all other descriptor has been set up.
  58. */
  59. val = ALT_SGDMA_DESCRIPTOR_CONTROL_OWNED_BY_HW_MSK;
  60. if (generate_eop)
  61. val |= ALT_SGDMA_DESCRIPTOR_CONTROL_GENERATE_EOP_MSK;
  62. if (read_fixed)
  63. val |= ALT_SGDMA_DESCRIPTOR_CONTROL_READ_FIXED_ADDRESS_MSK;
  64. if (write_fixed_or_sop)
  65. val |= ALT_SGDMA_DESCRIPTOR_CONTROL_WRITE_FIXED_ADDRESS_MSK;
  66. desc->descriptor_control = val;
  67. }
  68. static int alt_sgdma_wait_transfer(struct alt_sgdma_registers *regs)
  69. {
  70. int status;
  71. ulong ctime;
  72. /* Wait for the descriptor (chain) to complete */
  73. ctime = get_timer(0);
  74. while (1) {
  75. status = readl(&regs->status);
  76. if (!(status & ALT_SGDMA_STATUS_BUSY_MSK))
  77. break;
  78. if (get_timer(ctime) > ALT_TSE_SGDMA_BUSY_TIMEOUT) {
  79. status = -ETIMEDOUT;
  80. debug("sgdma timeout\n");
  81. break;
  82. }
  83. }
  84. /* Clear Run */
  85. writel(0, &regs->control);
  86. /* Clear status */
  87. writel(0xff, &regs->status);
  88. return status;
  89. }
  90. static int alt_sgdma_start_transfer(struct alt_sgdma_registers *regs,
  91. struct alt_sgdma_descriptor *desc)
  92. {
  93. u32 val;
  94. /* Point the controller at the descriptor */
  95. writel(virt_to_phys(desc), &regs->next_descriptor_pointer);
  96. /*
  97. * Set up SGDMA controller to:
  98. * - Disable interrupt generation
  99. * - Run once a valid descriptor is written to controller
  100. * - Stop on an error with any particular descriptor
  101. */
  102. val = ALT_SGDMA_CONTROL_RUN_MSK | ALT_SGDMA_CONTROL_STOP_DMA_ER_MSK;
  103. writel(val, &regs->control);
  104. return 0;
  105. }
  106. static void tse_adjust_link(struct altera_tse_priv *priv,
  107. struct phy_device *phydev)
  108. {
  109. struct alt_tse_mac *mac_dev = priv->mac_dev;
  110. u32 refvar;
  111. if (!phydev->link) {
  112. debug("%s: No link.\n", phydev->dev->name);
  113. return;
  114. }
  115. refvar = readl(&mac_dev->command_config);
  116. if (phydev->duplex)
  117. refvar |= ALTERA_TSE_CMD_HD_ENA_MSK;
  118. else
  119. refvar &= ~ALTERA_TSE_CMD_HD_ENA_MSK;
  120. switch (phydev->speed) {
  121. case 1000:
  122. refvar |= ALTERA_TSE_CMD_ETH_SPEED_MSK;
  123. refvar &= ~ALTERA_TSE_CMD_ENA_10_MSK;
  124. break;
  125. case 100:
  126. refvar &= ~ALTERA_TSE_CMD_ETH_SPEED_MSK;
  127. refvar &= ~ALTERA_TSE_CMD_ENA_10_MSK;
  128. break;
  129. case 10:
  130. refvar &= ~ALTERA_TSE_CMD_ETH_SPEED_MSK;
  131. refvar |= ALTERA_TSE_CMD_ENA_10_MSK;
  132. break;
  133. }
  134. writel(refvar, &mac_dev->command_config);
  135. }
  136. static int altera_tse_send_sgdma(struct udevice *dev, void *packet, int length)
  137. {
  138. struct altera_tse_priv *priv = dev_get_priv(dev);
  139. struct alt_sgdma_descriptor *tx_desc = priv->tx_desc;
  140. alt_sgdma_construct_descriptor(
  141. tx_desc,
  142. tx_desc + 1,
  143. packet, /* read addr */
  144. NULL, /* write addr */
  145. length, /* length or EOP ,will change for each tx */
  146. 1, /* gen eop */
  147. 0, /* read fixed */
  148. 1 /* write fixed or sop */
  149. );
  150. /* send the packet */
  151. alt_sgdma_start_transfer(priv->sgdma_tx, tx_desc);
  152. alt_sgdma_wait_transfer(priv->sgdma_tx);
  153. debug("sent %d bytes\n", tx_desc->actual_bytes_transferred);
  154. return tx_desc->actual_bytes_transferred;
  155. }
  156. static int altera_tse_recv_sgdma(struct udevice *dev, int flags,
  157. uchar **packetp)
  158. {
  159. struct altera_tse_priv *priv = dev_get_priv(dev);
  160. struct alt_sgdma_descriptor *rx_desc = priv->rx_desc;
  161. int packet_length;
  162. if (rx_desc->descriptor_status &
  163. ALT_SGDMA_DESCRIPTOR_STATUS_TERMINATED_BY_EOP_MSK) {
  164. alt_sgdma_wait_transfer(priv->sgdma_rx);
  165. packet_length = rx_desc->actual_bytes_transferred;
  166. debug("recv %d bytes\n", packet_length);
  167. *packetp = priv->rx_buf;
  168. return packet_length;
  169. }
  170. return -EAGAIN;
  171. }
  172. static int altera_tse_free_pkt_sgdma(struct udevice *dev, uchar *packet,
  173. int length)
  174. {
  175. struct altera_tse_priv *priv = dev_get_priv(dev);
  176. struct alt_sgdma_descriptor *rx_desc = priv->rx_desc;
  177. alt_sgdma_construct_descriptor(
  178. rx_desc,
  179. rx_desc + 1,
  180. NULL, /* read addr */
  181. priv->rx_buf, /* write addr */
  182. 0, /* length or EOP */
  183. 0, /* gen eop */
  184. 0, /* read fixed */
  185. 0 /* write fixed or sop */
  186. );
  187. /* setup the sgdma */
  188. alt_sgdma_start_transfer(priv->sgdma_rx, rx_desc);
  189. debug("recv setup\n");
  190. return 0;
  191. }
  192. static void altera_tse_stop_mac(struct altera_tse_priv *priv)
  193. {
  194. struct alt_tse_mac *mac_dev = priv->mac_dev;
  195. u32 status;
  196. ulong ctime;
  197. /* reset the mac */
  198. writel(ALTERA_TSE_CMD_SW_RESET_MSK, &mac_dev->command_config);
  199. ctime = get_timer(0);
  200. while (1) {
  201. status = readl(&mac_dev->command_config);
  202. if (!(status & ALTERA_TSE_CMD_SW_RESET_MSK))
  203. break;
  204. if (get_timer(ctime) > ALT_TSE_SW_RESET_TIMEOUT) {
  205. debug("Reset mac timeout\n");
  206. break;
  207. }
  208. }
  209. }
  210. static void altera_tse_stop_sgdma(struct udevice *dev)
  211. {
  212. struct altera_tse_priv *priv = dev_get_priv(dev);
  213. struct alt_sgdma_registers *rx_sgdma = priv->sgdma_rx;
  214. struct alt_sgdma_registers *tx_sgdma = priv->sgdma_tx;
  215. struct alt_sgdma_descriptor *rx_desc = priv->rx_desc;
  216. int ret;
  217. /* clear rx desc & wait for sgdma to complete */
  218. rx_desc->descriptor_control = 0;
  219. writel(0, &rx_sgdma->control);
  220. ret = alt_sgdma_wait_transfer(rx_sgdma);
  221. if (ret == -ETIMEDOUT)
  222. writel(ALT_SGDMA_CONTROL_SOFTWARERESET_MSK,
  223. &rx_sgdma->control);
  224. writel(0, &tx_sgdma->control);
  225. ret = alt_sgdma_wait_transfer(tx_sgdma);
  226. if (ret == -ETIMEDOUT)
  227. writel(ALT_SGDMA_CONTROL_SOFTWARERESET_MSK,
  228. &tx_sgdma->control);
  229. }
  230. static void msgdma_reset(struct msgdma_csr *csr)
  231. {
  232. u32 status;
  233. ulong ctime;
  234. /* Reset mSGDMA */
  235. writel(MSGDMA_CSR_STAT_MASK, &csr->status);
  236. writel(MSGDMA_CSR_CTL_RESET, &csr->control);
  237. ctime = get_timer(0);
  238. while (1) {
  239. status = readl(&csr->status);
  240. if (!(status & MSGDMA_CSR_STAT_RESETTING))
  241. break;
  242. if (get_timer(ctime) > ALT_TSE_SW_RESET_TIMEOUT) {
  243. debug("Reset msgdma timeout\n");
  244. break;
  245. }
  246. }
  247. /* Clear status */
  248. writel(MSGDMA_CSR_STAT_MASK, &csr->status);
  249. }
  250. static u32 msgdma_wait(struct msgdma_csr *csr)
  251. {
  252. u32 status;
  253. ulong ctime;
  254. /* Wait for the descriptor to complete */
  255. ctime = get_timer(0);
  256. while (1) {
  257. status = readl(&csr->status);
  258. if (!(status & MSGDMA_CSR_STAT_BUSY))
  259. break;
  260. if (get_timer(ctime) > ALT_TSE_SGDMA_BUSY_TIMEOUT) {
  261. debug("sgdma timeout\n");
  262. break;
  263. }
  264. }
  265. /* Clear status */
  266. writel(MSGDMA_CSR_STAT_MASK, &csr->status);
  267. return status;
  268. }
  269. static int altera_tse_send_msgdma(struct udevice *dev, void *packet,
  270. int length)
  271. {
  272. struct altera_tse_priv *priv = dev_get_priv(dev);
  273. struct msgdma_extended_desc *desc = priv->tx_desc;
  274. u32 tx_buf = virt_to_phys(packet);
  275. u32 status;
  276. writel(tx_buf, &desc->read_addr_lo);
  277. writel(0, &desc->read_addr_hi);
  278. writel(0, &desc->write_addr_lo);
  279. writel(0, &desc->write_addr_hi);
  280. writel(length, &desc->len);
  281. writel(0, &desc->burst_seq_num);
  282. writel(MSGDMA_DESC_TX_STRIDE, &desc->stride);
  283. writel(MSGDMA_DESC_CTL_TX_SINGLE, &desc->control);
  284. status = msgdma_wait(priv->sgdma_tx);
  285. debug("sent %d bytes, status %08x\n", length, status);
  286. return 0;
  287. }
  288. static int altera_tse_recv_msgdma(struct udevice *dev, int flags,
  289. uchar **packetp)
  290. {
  291. struct altera_tse_priv *priv = dev_get_priv(dev);
  292. struct msgdma_csr *csr = priv->sgdma_rx;
  293. struct msgdma_response *resp = priv->rx_resp;
  294. u32 level, length, status;
  295. level = readl(&csr->resp_fill_level);
  296. if (level & 0xffff) {
  297. length = readl(&resp->bytes_transferred);
  298. status = readl(&resp->status);
  299. debug("recv %d bytes, status %08x\n", length, status);
  300. *packetp = priv->rx_buf;
  301. return length;
  302. }
  303. return -EAGAIN;
  304. }
  305. static int altera_tse_free_pkt_msgdma(struct udevice *dev, uchar *packet,
  306. int length)
  307. {
  308. struct altera_tse_priv *priv = dev_get_priv(dev);
  309. struct msgdma_extended_desc *desc = priv->rx_desc;
  310. u32 rx_buf = virt_to_phys(priv->rx_buf);
  311. writel(0, &desc->read_addr_lo);
  312. writel(0, &desc->read_addr_hi);
  313. writel(rx_buf, &desc->write_addr_lo);
  314. writel(0, &desc->write_addr_hi);
  315. writel(PKTSIZE_ALIGN, &desc->len);
  316. writel(0, &desc->burst_seq_num);
  317. writel(MSGDMA_DESC_RX_STRIDE, &desc->stride);
  318. writel(MSGDMA_DESC_CTL_RX_SINGLE, &desc->control);
  319. debug("recv setup\n");
  320. return 0;
  321. }
  322. static void altera_tse_stop_msgdma(struct udevice *dev)
  323. {
  324. struct altera_tse_priv *priv = dev_get_priv(dev);
  325. msgdma_reset(priv->sgdma_rx);
  326. msgdma_reset(priv->sgdma_tx);
  327. }
  328. static int tse_mdio_read(struct mii_dev *bus, int addr, int devad, int reg)
  329. {
  330. struct altera_tse_priv *priv = bus->priv;
  331. struct alt_tse_mac *mac_dev = priv->mac_dev;
  332. u32 value;
  333. /* set mdio address */
  334. writel(addr, &mac_dev->mdio_phy1_addr);
  335. /* get the data */
  336. value = readl(&mac_dev->mdio_phy1[reg]);
  337. return value & 0xffff;
  338. }
  339. static int tse_mdio_write(struct mii_dev *bus, int addr, int devad, int reg,
  340. u16 val)
  341. {
  342. struct altera_tse_priv *priv = bus->priv;
  343. struct alt_tse_mac *mac_dev = priv->mac_dev;
  344. /* set mdio address */
  345. writel(addr, &mac_dev->mdio_phy1_addr);
  346. /* set the data */
  347. writel(val, &mac_dev->mdio_phy1[reg]);
  348. return 0;
  349. }
  350. static int tse_mdio_init(const char *name, struct altera_tse_priv *priv)
  351. {
  352. struct mii_dev *bus = mdio_alloc();
  353. if (!bus) {
  354. printf("Failed to allocate MDIO bus\n");
  355. return -ENOMEM;
  356. }
  357. bus->read = tse_mdio_read;
  358. bus->write = tse_mdio_write;
  359. snprintf(bus->name, sizeof(bus->name), "%s", name);
  360. bus->priv = (void *)priv;
  361. return mdio_register(bus);
  362. }
  363. static int tse_phy_init(struct altera_tse_priv *priv, void *dev)
  364. {
  365. struct phy_device *phydev;
  366. unsigned int mask = 0xffffffff;
  367. if (priv->phyaddr)
  368. mask = 1 << priv->phyaddr;
  369. phydev = phy_find_by_mask(priv->bus, mask, priv->interface);
  370. if (!phydev)
  371. return -ENODEV;
  372. phy_connect_dev(phydev, dev);
  373. phydev->supported &= PHY_GBIT_FEATURES;
  374. phydev->advertising = phydev->supported;
  375. priv->phydev = phydev;
  376. phy_config(phydev);
  377. return 0;
  378. }
  379. static int altera_tse_write_hwaddr(struct udevice *dev)
  380. {
  381. struct altera_tse_priv *priv = dev_get_priv(dev);
  382. struct alt_tse_mac *mac_dev = priv->mac_dev;
  383. struct eth_pdata *pdata = dev_get_platdata(dev);
  384. u8 *hwaddr = pdata->enetaddr;
  385. u32 mac_lo, mac_hi;
  386. mac_lo = (hwaddr[3] << 24) | (hwaddr[2] << 16) |
  387. (hwaddr[1] << 8) | hwaddr[0];
  388. mac_hi = (hwaddr[5] << 8) | hwaddr[4];
  389. debug("Set MAC address to 0x%04x%08x\n", mac_hi, mac_lo);
  390. writel(mac_lo, &mac_dev->mac_addr_0);
  391. writel(mac_hi, &mac_dev->mac_addr_1);
  392. writel(mac_lo, &mac_dev->supp_mac_addr_0_0);
  393. writel(mac_hi, &mac_dev->supp_mac_addr_0_1);
  394. writel(mac_lo, &mac_dev->supp_mac_addr_1_0);
  395. writel(mac_hi, &mac_dev->supp_mac_addr_1_1);
  396. writel(mac_lo, &mac_dev->supp_mac_addr_2_0);
  397. writel(mac_hi, &mac_dev->supp_mac_addr_2_1);
  398. writel(mac_lo, &mac_dev->supp_mac_addr_3_0);
  399. writel(mac_hi, &mac_dev->supp_mac_addr_3_1);
  400. return 0;
  401. }
  402. static int altera_tse_send(struct udevice *dev, void *packet, int length)
  403. {
  404. struct altera_tse_priv *priv = dev_get_priv(dev);
  405. unsigned long tx_buf = (unsigned long)packet;
  406. flush_dcache_range(tx_buf, tx_buf + length);
  407. return priv->ops->send(dev, packet, length);
  408. }
  409. static int altera_tse_recv(struct udevice *dev, int flags, uchar **packetp)
  410. {
  411. struct altera_tse_priv *priv = dev_get_priv(dev);
  412. return priv->ops->recv(dev, flags, packetp);
  413. }
  414. static int altera_tse_free_pkt(struct udevice *dev, uchar *packet,
  415. int length)
  416. {
  417. struct altera_tse_priv *priv = dev_get_priv(dev);
  418. unsigned long rx_buf = (unsigned long)priv->rx_buf;
  419. invalidate_dcache_range(rx_buf, rx_buf + PKTSIZE_ALIGN);
  420. return priv->ops->free_pkt(dev, packet, length);
  421. }
  422. static void altera_tse_stop(struct udevice *dev)
  423. {
  424. struct altera_tse_priv *priv = dev_get_priv(dev);
  425. priv->ops->stop(dev);
  426. altera_tse_stop_mac(priv);
  427. }
  428. static int altera_tse_start(struct udevice *dev)
  429. {
  430. struct altera_tse_priv *priv = dev_get_priv(dev);
  431. struct alt_tse_mac *mac_dev = priv->mac_dev;
  432. u32 val;
  433. int ret;
  434. /* need to create sgdma */
  435. debug("Configuring rx desc\n");
  436. altera_tse_free_pkt(dev, priv->rx_buf, PKTSIZE_ALIGN);
  437. /* start TSE */
  438. debug("Configuring TSE Mac\n");
  439. /* Initialize MAC registers */
  440. writel(PKTSIZE_ALIGN, &mac_dev->max_frame_length);
  441. writel(priv->rx_fifo_depth - 16, &mac_dev->rx_sel_empty_threshold);
  442. writel(0, &mac_dev->rx_sel_full_threshold);
  443. writel(priv->tx_fifo_depth - 16, &mac_dev->tx_sel_empty_threshold);
  444. writel(0, &mac_dev->tx_sel_full_threshold);
  445. writel(8, &mac_dev->rx_almost_empty_threshold);
  446. writel(8, &mac_dev->rx_almost_full_threshold);
  447. writel(8, &mac_dev->tx_almost_empty_threshold);
  448. writel(3, &mac_dev->tx_almost_full_threshold);
  449. /* NO Shift */
  450. writel(0, &mac_dev->rx_cmd_stat);
  451. writel(0, &mac_dev->tx_cmd_stat);
  452. /* enable MAC */
  453. val = ALTERA_TSE_CMD_TX_ENA_MSK | ALTERA_TSE_CMD_RX_ENA_MSK;
  454. writel(val, &mac_dev->command_config);
  455. /* Start up the PHY */
  456. ret = phy_startup(priv->phydev);
  457. if (ret) {
  458. debug("Could not initialize PHY %s\n",
  459. priv->phydev->dev->name);
  460. return ret;
  461. }
  462. tse_adjust_link(priv, priv->phydev);
  463. if (!priv->phydev->link)
  464. return -EIO;
  465. return 0;
  466. }
  467. static const struct tse_ops tse_sgdma_ops = {
  468. .send = altera_tse_send_sgdma,
  469. .recv = altera_tse_recv_sgdma,
  470. .free_pkt = altera_tse_free_pkt_sgdma,
  471. .stop = altera_tse_stop_sgdma,
  472. };
  473. static const struct tse_ops tse_msgdma_ops = {
  474. .send = altera_tse_send_msgdma,
  475. .recv = altera_tse_recv_msgdma,
  476. .free_pkt = altera_tse_free_pkt_msgdma,
  477. .stop = altera_tse_stop_msgdma,
  478. };
  479. static int altera_tse_probe(struct udevice *dev)
  480. {
  481. struct eth_pdata *pdata = dev_get_platdata(dev);
  482. struct altera_tse_priv *priv = dev_get_priv(dev);
  483. void *blob = (void *)gd->fdt_blob;
  484. int node = dev->of_offset;
  485. const char *list, *end;
  486. const fdt32_t *cell;
  487. void *base, *desc_mem = NULL;
  488. unsigned long addr, size;
  489. int parent, addrc, sizec;
  490. int len, idx;
  491. int ret;
  492. priv->dma_type = dev_get_driver_data(dev);
  493. if (priv->dma_type == ALT_SGDMA)
  494. priv->ops = &tse_sgdma_ops;
  495. else
  496. priv->ops = &tse_msgdma_ops;
  497. /*
  498. * decode regs. there are multiple reg tuples, and they need to
  499. * match with reg-names.
  500. */
  501. parent = fdt_parent_offset(blob, node);
  502. of_bus_default_count_cells(blob, parent, &addrc, &sizec);
  503. list = fdt_getprop(blob, node, "reg-names", &len);
  504. if (!list)
  505. return -ENOENT;
  506. end = list + len;
  507. cell = fdt_getprop(blob, node, "reg", &len);
  508. if (!cell)
  509. return -ENOENT;
  510. idx = 0;
  511. while (list < end) {
  512. addr = fdt_translate_address((void *)blob,
  513. node, cell + idx);
  514. size = fdt_addr_to_cpu(cell[idx + addrc]);
  515. base = map_physmem(addr, size, MAP_NOCACHE);
  516. len = strlen(list);
  517. if (strcmp(list, "control_port") == 0)
  518. priv->mac_dev = base;
  519. else if (strcmp(list, "rx_csr") == 0)
  520. priv->sgdma_rx = base;
  521. else if (strcmp(list, "rx_desc") == 0)
  522. priv->rx_desc = base;
  523. else if (strcmp(list, "rx_resp") == 0)
  524. priv->rx_resp = base;
  525. else if (strcmp(list, "tx_csr") == 0)
  526. priv->sgdma_tx = base;
  527. else if (strcmp(list, "tx_desc") == 0)
  528. priv->tx_desc = base;
  529. else if (strcmp(list, "s1") == 0)
  530. desc_mem = base;
  531. idx += addrc + sizec;
  532. list += (len + 1);
  533. }
  534. /* decode fifo depth */
  535. priv->rx_fifo_depth = fdtdec_get_int(blob, node,
  536. "rx-fifo-depth", 0);
  537. priv->tx_fifo_depth = fdtdec_get_int(blob, node,
  538. "tx-fifo-depth", 0);
  539. /* decode phy */
  540. addr = fdtdec_get_int(blob, node,
  541. "phy-handle", 0);
  542. addr = fdt_node_offset_by_phandle(blob, addr);
  543. priv->phyaddr = fdtdec_get_int(blob, addr,
  544. "reg", 0);
  545. /* init desc */
  546. if (priv->dma_type == ALT_SGDMA) {
  547. len = sizeof(struct alt_sgdma_descriptor) * 4;
  548. if (!desc_mem) {
  549. desc_mem = dma_alloc_coherent(len, &addr);
  550. if (!desc_mem)
  551. return -ENOMEM;
  552. }
  553. memset(desc_mem, 0, len);
  554. priv->tx_desc = desc_mem;
  555. priv->rx_desc = priv->tx_desc +
  556. 2 * sizeof(struct alt_sgdma_descriptor);
  557. }
  558. /* allocate recv packet buffer */
  559. priv->rx_buf = malloc_cache_aligned(PKTSIZE_ALIGN);
  560. if (!priv->rx_buf)
  561. return -ENOMEM;
  562. /* stop controller */
  563. debug("Reset TSE & SGDMAs\n");
  564. altera_tse_stop(dev);
  565. /* start the phy */
  566. priv->interface = pdata->phy_interface;
  567. tse_mdio_init(dev->name, priv);
  568. priv->bus = miiphy_get_dev_by_name(dev->name);
  569. ret = tse_phy_init(priv, dev);
  570. return ret;
  571. }
  572. static int altera_tse_ofdata_to_platdata(struct udevice *dev)
  573. {
  574. struct eth_pdata *pdata = dev_get_platdata(dev);
  575. const char *phy_mode;
  576. pdata->phy_interface = -1;
  577. phy_mode = fdt_getprop(gd->fdt_blob, dev->of_offset, "phy-mode", NULL);
  578. if (phy_mode)
  579. pdata->phy_interface = phy_get_interface_by_name(phy_mode);
  580. if (pdata->phy_interface == -1) {
  581. debug("%s: Invalid PHY interface '%s'\n", __func__, phy_mode);
  582. return -EINVAL;
  583. }
  584. return 0;
  585. }
  586. static const struct eth_ops altera_tse_ops = {
  587. .start = altera_tse_start,
  588. .send = altera_tse_send,
  589. .recv = altera_tse_recv,
  590. .free_pkt = altera_tse_free_pkt,
  591. .stop = altera_tse_stop,
  592. .write_hwaddr = altera_tse_write_hwaddr,
  593. };
  594. static const struct udevice_id altera_tse_ids[] = {
  595. { .compatible = "altr,tse-msgdma-1.0", .data = ALT_MSGDMA },
  596. { .compatible = "altr,tse-1.0", .data = ALT_SGDMA },
  597. {}
  598. };
  599. U_BOOT_DRIVER(altera_tse) = {
  600. .name = "altera_tse",
  601. .id = UCLASS_ETH,
  602. .of_match = altera_tse_ids,
  603. .ops = &altera_tse_ops,
  604. .ofdata_to_platdata = altera_tse_ofdata_to_platdata,
  605. .platdata_auto_alloc_size = sizeof(struct eth_pdata),
  606. .priv_auto_alloc_size = sizeof(struct altera_tse_priv),
  607. .probe = altera_tse_probe,
  608. };