2 * Driver for (BCM4706)? GBit MAC core on BCMA bus.
4 * Copyright (C) 2012 Rafał Miłecki <zajec5@gmail.com>
6 * Licensed under the GNU/GPL. See COPYING for details.
9 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
11 #include <linux/bcma/bcma.h>
12 #include <linux/brcmphy.h>
13 #include <linux/etherdevice.h>
14 #include <linux/of_net.h>
17 static inline bool bgmac_is_bcm4707_family(struct bcma_device *core)
19 switch (core->bus->chipinfo.id) {
20 case BCMA_CHIP_ID_BCM4707:
21 case BCMA_CHIP_ID_BCM47094:
22 case BCMA_CHIP_ID_BCM53018:
29 /**************************************************
31 **************************************************/
33 static u32 bcma_bgmac_read(struct bgmac *bgmac, u16 offset)
35 return bcma_read32(bgmac->bcma.core, offset);
38 static void bcma_bgmac_write(struct bgmac *bgmac, u16 offset, u32 value)
40 bcma_write32(bgmac->bcma.core, offset, value);
43 static u32 bcma_bgmac_idm_read(struct bgmac *bgmac, u16 offset)
45 return bcma_aread32(bgmac->bcma.core, offset);
48 static void bcma_bgmac_idm_write(struct bgmac *bgmac, u16 offset, u32 value)
50 return bcma_awrite32(bgmac->bcma.core, offset, value);
53 static bool bcma_bgmac_clk_enabled(struct bgmac *bgmac)
55 return bcma_core_is_enabled(bgmac->bcma.core);
58 static void bcma_bgmac_clk_enable(struct bgmac *bgmac, u32 flags)
60 bcma_core_enable(bgmac->bcma.core, flags);
63 static void bcma_bgmac_cco_ctl_maskset(struct bgmac *bgmac, u32 offset,
66 struct bcma_drv_cc *cc = &bgmac->bcma.core->bus->drv_cc;
68 bcma_chipco_chipctl_maskset(cc, offset, mask, set);
71 static u32 bcma_bgmac_get_bus_clock(struct bgmac *bgmac)
73 struct bcma_drv_cc *cc = &bgmac->bcma.core->bus->drv_cc;
75 return bcma_pmu_get_bus_clock(cc);
78 static void bcma_bgmac_cmn_maskset32(struct bgmac *bgmac, u16 offset, u32 mask,
81 bcma_maskset32(bgmac->bcma.cmn, offset, mask, set);
84 static int bcma_phy_connect(struct bgmac *bgmac)
86 struct phy_device *phy_dev;
87 char bus_id[MII_BUS_ID_SIZE + 3];
89 /* Connect to the PHY */
90 snprintf(bus_id, sizeof(bus_id), PHY_ID_FMT, bgmac->mii_bus->id,
92 phy_dev = phy_connect(bgmac->net_dev, bus_id, bgmac_adjust_link,
93 PHY_INTERFACE_MODE_MII);
94 if (IS_ERR(phy_dev)) {
95 dev_err(bgmac->dev, "PHY connection failed\n");
96 return PTR_ERR(phy_dev);
102 static const struct bcma_device_id bgmac_bcma_tbl[] = {
103 BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_4706_MAC_GBIT,
104 BCMA_ANY_REV, BCMA_ANY_CLASS),
105 BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_MAC_GBIT, BCMA_ANY_REV,
109 MODULE_DEVICE_TABLE(bcma, bgmac_bcma_tbl);
111 /* http://bcm-v4.sipsolutions.net/mac-gbit/gmac/chipattach */
112 static int bgmac_probe(struct bcma_device *core)
114 struct bcma_chipinfo *ci = &core->bus->chipinfo;
115 struct ssb_sprom *sprom = &core->bus->sprom;
116 struct mii_bus *mii_bus;
118 const u8 *mac = NULL;
121 bgmac = bgmac_alloc(&core->dev);
125 bgmac->bcma.core = core;
126 bgmac->dma_dev = core->dma_dev;
127 bgmac->irq = core->irq;
129 bcma_set_drvdata(core, bgmac);
131 if (bgmac->dev->of_node)
132 mac = of_get_mac_address(bgmac->dev->of_node);
134 /* If no MAC address assigned via device tree, check SPROM */
136 switch (core->core_unit) {
147 dev_err(bgmac->dev, "Unsupported core_unit %d\n",
154 ether_addr_copy(bgmac->net_dev->dev_addr, mac);
156 /* On BCM4706 we need common core to access PHY */
157 if (core->id.id == BCMA_CORE_4706_MAC_GBIT &&
158 !core->bus->drv_gmac_cmn.core) {
159 dev_err(bgmac->dev, "GMAC CMN core not found (required for BCM4706)\n");
163 bgmac->bcma.cmn = core->bus->drv_gmac_cmn.core;
165 switch (core->core_unit) {
167 bgmac->phyaddr = sprom->et0phyaddr;
170 bgmac->phyaddr = sprom->et1phyaddr;
173 bgmac->phyaddr = sprom->et2phyaddr;
176 bgmac->phyaddr &= BGMAC_PHY_MASK;
177 if (bgmac->phyaddr == BGMAC_PHY_MASK) {
178 dev_err(bgmac->dev, "No PHY found\n");
182 dev_info(bgmac->dev, "Found PHY addr: %d%s\n", bgmac->phyaddr,
183 bgmac->phyaddr == BGMAC_PHY_NOREGS ? " (NOREGS)" : "");
185 if (!bgmac_is_bcm4707_family(core) &&
186 !(ci->id == BCMA_CHIP_ID_BCM53573 && core->core_unit == 1)) {
187 mii_bus = bcma_mdio_mii_register(bgmac);
188 if (IS_ERR(mii_bus)) {
189 err = PTR_ERR(mii_bus);
193 bgmac->mii_bus = mii_bus;
196 if (core->bus->hosttype == BCMA_HOSTTYPE_PCI) {
197 dev_err(bgmac->dev, "PCI setup not implemented\n");
202 bgmac->has_robosw = !!(sprom->boardflags_lo & BGMAC_BFL_ENETROBO);
203 if (bgmac->has_robosw)
204 dev_warn(bgmac->dev, "Support for Roboswitch not implemented\n");
206 if (sprom->boardflags_lo & BGMAC_BFL_ENETADM)
207 dev_warn(bgmac->dev, "Support for ADMtek ethernet switch not implemented\n");
211 /* BCM 471X/535X family */
212 case BCMA_CHIP_ID_BCM4716:
213 bgmac->feature_flags |= BGMAC_FEAT_CLKCTLST;
215 case BCMA_CHIP_ID_BCM47162:
216 bgmac->feature_flags |= BGMAC_FEAT_FLW_CTRL2;
217 bgmac->feature_flags |= BGMAC_FEAT_SET_RXQ_CLK;
219 case BCMA_CHIP_ID_BCM5357:
220 case BCMA_CHIP_ID_BCM53572:
221 bgmac->feature_flags |= BGMAC_FEAT_SET_RXQ_CLK;
222 bgmac->feature_flags |= BGMAC_FEAT_CLKCTLST;
223 bgmac->feature_flags |= BGMAC_FEAT_FLW_CTRL1;
224 bgmac->feature_flags |= BGMAC_FEAT_SW_TYPE_PHY;
225 if (ci->pkg == BCMA_PKG_ID_BCM47188 ||
226 ci->pkg == BCMA_PKG_ID_BCM47186) {
227 bgmac->feature_flags |= BGMAC_FEAT_SW_TYPE_RGMII;
228 bgmac->feature_flags |= BGMAC_FEAT_IOST_ATTACHED;
230 if (ci->pkg == BCMA_PKG_ID_BCM5358)
231 bgmac->feature_flags |= BGMAC_FEAT_SW_TYPE_EPHYRMII;
233 case BCMA_CHIP_ID_BCM53573:
234 bgmac->feature_flags |= BGMAC_FEAT_CLKCTLST;
235 bgmac->feature_flags |= BGMAC_FEAT_SET_RXQ_CLK;
236 if (ci->pkg == BCMA_PKG_ID_BCM47189)
237 bgmac->feature_flags |= BGMAC_FEAT_IOST_ATTACHED;
238 if (core->core_unit == 0) {
239 bgmac->feature_flags |= BGMAC_FEAT_CC4_IF_SW_TYPE;
240 if (ci->pkg == BCMA_PKG_ID_BCM47189)
241 bgmac->feature_flags |=
242 BGMAC_FEAT_CC4_IF_SW_TYPE_RGMII;
243 } else if (core->core_unit == 1) {
244 bgmac->feature_flags |= BGMAC_FEAT_IRQ_ID_OOB_6;
245 bgmac->feature_flags |= BGMAC_FEAT_CC7_IF_TYPE_RGMII;
248 case BCMA_CHIP_ID_BCM4749:
249 bgmac->feature_flags |= BGMAC_FEAT_SET_RXQ_CLK;
250 bgmac->feature_flags |= BGMAC_FEAT_CLKCTLST;
251 bgmac->feature_flags |= BGMAC_FEAT_FLW_CTRL1;
252 bgmac->feature_flags |= BGMAC_FEAT_SW_TYPE_PHY;
254 bgmac->feature_flags |= BGMAC_FEAT_SW_TYPE_RGMII;
255 bgmac->feature_flags |= BGMAC_FEAT_IOST_ATTACHED;
259 case BCMA_CHIP_ID_BCM4707:
260 case BCMA_CHIP_ID_BCM47094:
261 case BCMA_CHIP_ID_BCM53018:
262 bgmac->feature_flags |= BGMAC_FEAT_CLKCTLST;
263 bgmac->feature_flags |= BGMAC_FEAT_NO_RESET;
264 bgmac->feature_flags |= BGMAC_FEAT_FORCE_SPEED_2500;
267 bgmac->feature_flags |= BGMAC_FEAT_CLKCTLST;
268 bgmac->feature_flags |= BGMAC_FEAT_SET_RXQ_CLK;
271 if (!bgmac_is_bcm4707_family(core) && core->id.rev > 2)
272 bgmac->feature_flags |= BGMAC_FEAT_MISC_PLL_REQ;
274 if (core->id.id == BCMA_CORE_4706_MAC_GBIT) {
275 bgmac->feature_flags |= BGMAC_FEAT_CMN_PHY_CTL;
276 bgmac->feature_flags |= BGMAC_FEAT_NO_CLR_MIB;
279 if (core->id.rev >= 4) {
280 bgmac->feature_flags |= BGMAC_FEAT_CMDCFG_SR_REV4;
281 bgmac->feature_flags |= BGMAC_FEAT_TX_MASK_SETUP;
282 bgmac->feature_flags |= BGMAC_FEAT_RX_MASK_SETUP;
285 bgmac->read = bcma_bgmac_read;
286 bgmac->write = bcma_bgmac_write;
287 bgmac->idm_read = bcma_bgmac_idm_read;
288 bgmac->idm_write = bcma_bgmac_idm_write;
289 bgmac->clk_enabled = bcma_bgmac_clk_enabled;
290 bgmac->clk_enable = bcma_bgmac_clk_enable;
291 bgmac->cco_ctl_maskset = bcma_bgmac_cco_ctl_maskset;
292 bgmac->get_bus_clock = bcma_bgmac_get_bus_clock;
293 bgmac->cmn_maskset32 = bcma_bgmac_cmn_maskset32;
295 bgmac->phy_connect = bcma_phy_connect;
297 bgmac->phy_connect = bgmac_phy_connect_direct;
299 err = bgmac_enet_probe(bgmac);
306 bcma_mdio_mii_unregister(bgmac->mii_bus);
308 bcma_set_drvdata(core, NULL);
313 static void bgmac_remove(struct bcma_device *core)
315 struct bgmac *bgmac = bcma_get_drvdata(core);
317 bcma_mdio_mii_unregister(bgmac->mii_bus);
318 bgmac_enet_remove(bgmac);
319 bcma_set_drvdata(core, NULL);
323 static struct bcma_driver bgmac_bcma_driver = {
324 .name = KBUILD_MODNAME,
325 .id_table = bgmac_bcma_tbl,
326 .probe = bgmac_probe,
327 .remove = bgmac_remove,
330 static int __init bgmac_init(void)
334 err = bcma_driver_register(&bgmac_bcma_driver);
337 pr_info("Broadcom 47xx GBit MAC driver loaded\n");
342 static void __exit bgmac_exit(void)
344 bcma_driver_unregister(&bgmac_bcma_driver);
347 module_init(bgmac_init)
348 module_exit(bgmac_exit)
350 MODULE_AUTHOR("Rafał Miłecki");
351 MODULE_LICENSE("GPL");