2 * Xilinx xps_ll_temac ethernet driver for u-boot
4 * supports SDMA or FIFO access and MDIO bus communication
6 * Copyright (C) 2011 - 2012 Stephan Linz <linz@li-pro.net>
7 * Copyright (C) 2008 - 2011 Michal Simek <monstr@monstr.eu>
8 * Copyright (C) 2008 - 2011 PetaLogix
10 * Based on Yoshio Kashiwagi kashiwagi@co-nss.co.jp driver
11 * Copyright (C) 2008 Nissin Systems Co.,Ltd.
14 * This program is free software; you can redistribute it and/or modify it
15 * under the terms of the GNU General Public License as published by the
16 * Free Software Foundation; either version 2 of the License, or (at your
17 * option) any later version.
19 * [0]: http://www.xilinx.com/support/documentation
21 * [S]: [0]/ip_documentation/xps_ll_temac.pdf
22 * [A]: [0]/application_notes/xapp1041.pdf
33 #include "xilinx_ll_temac.h"
34 #include "xilinx_ll_temac_fifo.h"
35 #include "xilinx_ll_temac_sdma.h"
36 #include "xilinx_ll_temac_mdio.h"
38 #if !defined(CONFIG_MII)
39 # error "LL_TEMAC requires MII -- missing CONFIG_MII"
42 #if !defined(CONFIG_PHYLIB)
43 # error "LL_TEMAC requires PHYLIB -- missing CONFIG_PHYLIB"
46 struct ll_temac_info {
48 unsigned long base_addr;
49 unsigned long ctrl_addr;
55 /* Ethernet interface ready status */
56 int ll_temac_check_status(struct temac_reg *regs, u32 mask)
58 unsigned timeout = 50; /* 1usec * 50 = 50usec */
61 * Quote from LL TEMAC documentation: The bits in the RDY
62 * register are asserted when there is no access in progress.
63 * When an access is in progress, a bit corresponding to the
64 * type of access is automatically de-asserted. The bit is
65 * automatically re-asserted when the access is complete.
67 while (timeout && (!(in_be32(®s->rdy) & mask))) {
73 printf("%s: Timeout on 0x%08x @%p\n", __func__,
82 * Indirect write to ll_temac.
84 * http://www.xilinx.com/support/documentation/ip_documentation/xps_ll_temac.pdf
85 * page 23, second paragraph, The use of CTL0 register or CTL1 register
87 int ll_temac_indirect_set(struct temac_reg *regs, u16 regn, u32 reg_data)
89 out_be32(®s->lsw, (reg_data & MLSW_MASK));
90 out_be32(®s->ctl, CTL_WEN | (regn & CTL_ADDR_MASK));
92 if (ll_temac_check_status(regs, RSE_CFG_WR))
99 * Indirect read from ll_temac.
101 * http://www.xilinx.com/support/documentation/ip_documentation/xps_ll_temac.pdf
102 * page 23, second paragraph, The use of CTL0 register or CTL1 register
104 int ll_temac_indirect_get(struct temac_reg *regs, u16 regn, u32* reg_data)
106 out_be32(®s->ctl, (regn & CTL_ADDR_MASK));
108 if (ll_temac_check_status(regs, RSE_CFG_RR))
111 *reg_data = in_be32(®s->lsw) & MLSW_MASK;
115 /* setting sub-controller and ll_temac to proper setting */
116 static int ll_temac_setup_ctrl(struct eth_device *dev)
118 struct ll_temac *ll_temac = dev->priv;
119 struct temac_reg *regs = (struct temac_reg *)dev->iobase;
121 if (ll_temac->ctrlreset && ll_temac->ctrlreset(dev))
124 if (ll_temac->ctrlinit && ll_temac->ctrlinit(dev))
127 /* Promiscuous mode disable */
128 if (!ll_temac_indirect_set(regs, TEMAC_AFM, 0))
131 /* Enable Receiver - RX bit */
132 if (!ll_temac_indirect_set(regs, TEMAC_RCW1, RCW1_RX))
135 /* Enable Transmitter - TX bit */
136 if (!ll_temac_indirect_set(regs, TEMAC_TC, TC_TX))
143 * Configure ll_temac based on negotiated speed and duplex
144 * reported by PHY handling code
146 static int ll_temac_adjust_link(struct eth_device *dev)
148 unsigned int speed, emmc_reg;
149 struct temac_reg *regs = (struct temac_reg *)dev->iobase;
150 struct ll_temac *ll_temac = dev->priv;
151 struct phy_device *phydev = ll_temac->phydev;
154 printf("%s: No link.\n", phydev->dev->name);
158 switch (phydev->speed) {
160 speed = EMMC_LSPD_1000;
163 speed = EMMC_LSPD_100;
166 speed = EMMC_LSPD_10;
172 if (!ll_temac_indirect_get(regs, TEMAC_EMMC, &emmc_reg))
175 emmc_reg &= ~EMMC_LSPD_MASK;
178 if (!ll_temac_indirect_set(regs, TEMAC_EMMC, emmc_reg))
181 printf("%s: PHY is %s with %dbase%s, %s%s\n",
182 dev->name, phydev->drv->name,
183 phydev->speed, (phydev->port == PORT_TP) ? "T" : "X",
184 (phydev->duplex) ? "FDX" : "HDX",
185 (phydev->port == PORT_OTHER) ? ", unkown mode" : "");
191 static int ll_temac_setup_mac_addr(struct eth_device *dev)
193 struct temac_reg *regs = (struct temac_reg *)dev->iobase;
196 /* set up unicast MAC address filter */
197 val = ((dev->enetaddr[3] << 24) | (dev->enetaddr[2] << 16) |
198 (dev->enetaddr[1] << 8) | (dev->enetaddr[0]));
199 val &= UAW0_UADDR_MASK;
201 if (!ll_temac_indirect_set(regs, TEMAC_UAW0, val))
204 val = ((dev->enetaddr[5] << 8) | dev->enetaddr[4]);
205 val &= UAW1_UADDR_MASK;
207 if (!ll_temac_indirect_set(regs, TEMAC_UAW1, val))
214 static void ll_temac_halt(struct eth_device *dev)
216 struct ll_temac *ll_temac = dev->priv;
217 struct temac_reg *regs = (struct temac_reg *)dev->iobase;
219 /* Disable Receiver */
220 ll_temac_indirect_set(regs, TEMAC_RCW0, 0);
222 /* Disable Transmitter */
223 ll_temac_indirect_set(regs, TEMAC_TC, 0);
225 if (ll_temac->ctrlhalt)
226 ll_temac->ctrlhalt(dev);
228 /* Shut down the PHY, as needed */
229 phy_shutdown(ll_temac->phydev);
232 static int ll_temac_init(struct eth_device *dev, bd_t *bis)
234 struct ll_temac *ll_temac = dev->priv;
237 printf("%s: Xilinx XPS LocalLink Tri-Mode Ether MAC #%d at 0x%08X.\n",
238 dev->name, dev->index, dev->iobase);
240 if (!ll_temac_setup_ctrl(dev))
243 /* Start up the PHY */
244 ret = phy_startup(ll_temac->phydev);
246 printf("%s: Could not initialize PHY %s\n",
247 dev->name, ll_temac->phydev->dev->name);
251 if (!ll_temac_adjust_link(dev)) {
256 /* If there's no link, fail */
257 return ll_temac->phydev->link ? 0 : -1;
261 * Discover which PHY is attached to the device, and configure it
262 * properly. If the PHY is not recognized, then return 0
263 * (failure). Otherwise, return 1
265 static int ll_temac_phy_init(struct eth_device *dev)
267 struct ll_temac *ll_temac = dev->priv;
268 struct phy_device *phydev;
269 unsigned int supported = PHY_GBIT_FEATURES;
271 /* interface - look at driver/net/tsec.c */
272 phydev = phy_connect(ll_temac->bus, ll_temac->phyaddr,
273 dev, PHY_INTERFACE_MODE_NONE);
275 phydev->supported &= supported;
276 phydev->advertising = phydev->supported;
278 ll_temac->phydev = phydev;
286 * Initialize a single ll_temac devices
288 * Returns the result of ll_temac phy interface that were initialized
290 int xilinx_ll_temac_initialize(bd_t *bis, struct ll_temac_info *devinf)
292 struct eth_device *dev;
293 struct ll_temac *ll_temac;
295 dev = calloc(1, sizeof(*dev));
299 ll_temac = calloc(1, sizeof(struct ll_temac));
300 if (ll_temac == NULL) {
305 /* use given name or generate its own unique name */
306 if (devinf->devname) {
307 strncpy(dev->name, devinf->devname, sizeof(dev->name));
309 snprintf(dev->name, sizeof(dev->name), "lltemac.%lx", devinf->base_addr);
310 devinf->devname = dev->name;
313 dev->iobase = devinf->base_addr;
315 dev->priv = ll_temac;
316 dev->init = ll_temac_init;
317 dev->halt = ll_temac_halt;
318 dev->write_hwaddr = ll_temac_setup_mac_addr;
320 ll_temac->ctrladdr = devinf->ctrl_addr;
321 if (devinf->flags & XILINX_LL_TEMAC_M_SDMA_PLB) {
322 #if defined(CONFIG_XILINX_440) || defined(CONFIG_XILINX_405)
323 if (devinf->flags & XILINX_LL_TEMAC_M_SDMA_DCR) {
324 ll_temac_collect_xldcr_sdma_reg_addr(dev);
325 ll_temac->in32 = ll_temac_xldcr_in32;
326 ll_temac->out32 = ll_temac_xldcr_out32;
330 ll_temac_collect_xlplb_sdma_reg_addr(dev);
331 ll_temac->in32 = ll_temac_xlplb_in32;
332 ll_temac->out32 = ll_temac_xlplb_out32;
334 ll_temac->ctrlinit = ll_temac_init_sdma;
335 ll_temac->ctrlhalt = ll_temac_halt_sdma;
336 ll_temac->ctrlreset = ll_temac_reset_sdma;
337 dev->recv = ll_temac_recv_sdma;
338 dev->send = ll_temac_send_sdma;
340 ll_temac->in32 = NULL;
341 ll_temac->out32 = NULL;
342 ll_temac->ctrlinit = NULL;
343 ll_temac->ctrlhalt = NULL;
344 ll_temac->ctrlreset = ll_temac_reset_fifo;
345 dev->recv = ll_temac_recv_fifo;
346 dev->send = ll_temac_send_fifo;
349 /* Link to specified MDIO bus */
350 strncpy(ll_temac->mdio_busname, devinf->mdio_busname, MDIO_NAME_LEN);
351 ll_temac->bus = miiphy_get_dev_by_name(ll_temac->mdio_busname);
353 /* Looking for a valid PHY address if it is not yet set */
354 if (devinf->phyaddr == -1)
355 ll_temac->phyaddr = ll_temac_phy_addr(ll_temac->bus);
357 ll_temac->phyaddr = devinf->phyaddr;
361 /* Try to initialize PHY here, and return */
362 return ll_temac_phy_init(dev);
366 * Initialize a single ll_temac device with its mdio bus behind ll_temac
368 * Returns 1 if the ll_temac device and the mdio bus were initialized
369 * otherwise returns 0
371 int xilinx_ll_temac_eth_init(bd_t *bis, unsigned long base_addr, int flags,
372 unsigned long ctrl_addr)
374 struct ll_temac_info devinf;
375 struct ll_temac_mdio_info mdioinf;
378 /* prepare the internal driver informations */
379 devinf.flags = flags;
380 devinf.base_addr = base_addr;
381 devinf.ctrl_addr = ctrl_addr;
382 devinf.devname = NULL;
385 mdioinf.name = devinf.mdio_busname = NULL;
386 mdioinf.regs = (struct temac_reg *)devinf.base_addr;
388 ret = xilinx_ll_temac_mdio_initialize(bis, &mdioinf);
392 * If there was no MDIO bus name then take over the
393 * new automaticaly generated by the MDIO init code.
395 if (mdioinf.name != devinf.mdio_busname)
396 devinf.mdio_busname = mdioinf.name;
398 ret = xilinx_ll_temac_initialize(bis, &devinf);