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1// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0-or-later
2/*
3 * Copyright 2008 - 2015 Freescale Semiconductor Inc.
4 */
5
6#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
7
8#include <linux/init.h>
9#include <linux/module.h>
10#include <linux/of_address.h>
11#include <linux/of_platform.h>
12#include <linux/of_net.h>
13#include <linux/of_mdio.h>
14#include <linux/device.h>
15#include <linux/phy.h>
16#include <linux/netdevice.h>
17#include <linux/phy_fixed.h>
18#include <linux/phylink.h>
19#include <linux/etherdevice.h>
20#include <linux/libfdt_env.h>
21#include <linux/platform_device.h>
22
23#include "mac.h"
24#include "fman_mac.h"
25#include "fman_dtsec.h"
26#include "fman_tgec.h"
27#include "fman_memac.h"
28
29MODULE_LICENSE("Dual BSD/GPL");
30MODULE_DESCRIPTION("FSL FMan MAC API based driver");
31
32struct mac_priv_s {
33 u8 cell_index;
34 struct fman *fman;
35 /* List of multicast addresses */
36 struct list_head mc_addr_list;
37 struct platform_device *eth_dev;
38 u16 speed;
39};
40
41struct mac_address {
42 u8 addr[ETH_ALEN];
43 struct list_head list;
44};
45
46static void mac_exception(struct mac_device *mac_dev,
47 enum fman_mac_exceptions ex)
48{
49 if (ex == FM_MAC_EX_10G_RX_FIFO_OVFL) {
50 /* don't flag RX FIFO after the first */
51 mac_dev->set_exception(mac_dev->fman_mac,
52 FM_MAC_EX_10G_RX_FIFO_OVFL, false);
53 dev_err(mac_dev->dev, "10G MAC got RX FIFO Error = %x\n", ex);
54 }
55
56 dev_dbg(mac_dev->dev, "%s:%s() -> %d\n", KBUILD_BASENAME ".c",
57 __func__, ex);
58}
59
60int fman_set_multi(struct net_device *net_dev, struct mac_device *mac_dev)
61{
62 struct mac_priv_s *priv;
63 struct mac_address *old_addr, *tmp;
64 struct netdev_hw_addr *ha;
65 int err;
66 enet_addr_t *addr;
67
68 priv = mac_dev->priv;
69
70 /* Clear previous address list */
71 list_for_each_entry_safe(old_addr, tmp, &priv->mc_addr_list, list) {
72 addr = (enet_addr_t *)old_addr->addr;
73 err = mac_dev->remove_hash_mac_addr(mac_dev->fman_mac, addr);
74 if (err < 0)
75 return err;
76
77 list_del(&old_addr->list);
78 kfree(old_addr);
79 }
80
81 /* Add all the addresses from the new list */
82 netdev_for_each_mc_addr(ha, net_dev) {
83 addr = (enet_addr_t *)ha->addr;
84 err = mac_dev->add_hash_mac_addr(mac_dev->fman_mac, addr);
85 if (err < 0)
86 return err;
87
88 tmp = kmalloc(sizeof(*tmp), GFP_ATOMIC);
89 if (!tmp)
90 return -ENOMEM;
91
92 ether_addr_copy(tmp->addr, ha->addr);
93 list_add(&tmp->list, &priv->mc_addr_list);
94 }
95 return 0;
96}
97
98static DEFINE_MUTEX(eth_lock);
99
100static struct platform_device *dpaa_eth_add_device(int fman_id,
101 struct mac_device *mac_dev)
102{
103 struct platform_device *pdev;
104 struct dpaa_eth_data data;
105 struct mac_priv_s *priv;
106 static int dpaa_eth_dev_cnt;
107 int ret;
108
109 priv = mac_dev->priv;
110
111 data.mac_dev = mac_dev;
112 data.mac_hw_id = priv->cell_index;
113 data.fman_hw_id = fman_id;
114
115 mutex_lock(ð_lock);
116 pdev = platform_device_alloc("dpaa-ethernet", dpaa_eth_dev_cnt);
117 if (!pdev) {
118 ret = -ENOMEM;
119 goto no_mem;
120 }
121
122 pdev->dev.parent = mac_dev->dev;
123
124 ret = platform_device_add_data(pdev, &data, sizeof(data));
125 if (ret)
126 goto err;
127
128 ret = platform_device_add(pdev);
129 if (ret)
130 goto err;
131
132 dpaa_eth_dev_cnt++;
133 mutex_unlock(ð_lock);
134
135 return pdev;
136
137err:
138 platform_device_put(pdev);
139no_mem:
140 mutex_unlock(ð_lock);
141
142 return ERR_PTR(ret);
143}
144
145static const struct of_device_id mac_match[] = {
146 { .compatible = "fsl,fman-dtsec", .data = dtsec_initialization },
147 { .compatible = "fsl,fman-xgec", .data = tgec_initialization },
148 { .compatible = "fsl,fman-memac", .data = memac_initialization },
149 {}
150};
151MODULE_DEVICE_TABLE(of, mac_match);
152
153static int mac_probe(struct platform_device *_of_dev)
154{
155 int err, i, nph;
156 int (*init)(struct mac_device *mac_dev, struct device_node *mac_node,
157 struct fman_mac_params *params);
158 struct device *dev;
159 struct device_node *mac_node, *dev_node;
160 struct mac_device *mac_dev;
161 struct platform_device *of_dev;
162 struct mac_priv_s *priv;
163 struct fman_mac_params params;
164 u32 val;
165 u8 fman_id;
166 phy_interface_t phy_if;
167
168 dev = &_of_dev->dev;
169 mac_node = dev->of_node;
170 init = of_device_get_match_data(dev);
171
172 mac_dev = devm_kzalloc(dev, sizeof(*mac_dev), GFP_KERNEL);
173 if (!mac_dev)
174 return -ENOMEM;
175 priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
176 if (!priv)
177 return -ENOMEM;
178 platform_set_drvdata(_of_dev, mac_dev);
179
180 /* Save private information */
181 mac_dev->priv = priv;
182 mac_dev->dev = dev;
183
184 INIT_LIST_HEAD(&priv->mc_addr_list);
185
186 /* Get the FM node */
187 dev_node = of_get_parent(mac_node);
188 if (!dev_node) {
189 dev_err(dev, "of_get_parent(%pOF) failed\n",
190 mac_node);
191 return -EINVAL;
192 }
193
194 of_dev = of_find_device_by_node(dev_node);
195 if (!of_dev) {
196 dev_err(dev, "of_find_device_by_node(%pOF) failed\n", dev_node);
197 err = -EINVAL;
198 goto _return_of_node_put;
199 }
200
201 /* Get the FMan cell-index */
202 err = of_property_read_u32(dev_node, "cell-index", &val);
203 if (err) {
204 dev_err(dev, "failed to read cell-index for %pOF\n", dev_node);
205 err = -EINVAL;
206 goto _return_of_node_put;
207 }
208 /* cell-index 0 => FMan id 1 */
209 fman_id = (u8)(val + 1);
210
211 priv->fman = fman_bind(&of_dev->dev);
212 if (!priv->fman) {
213 dev_err(dev, "fman_bind(%pOF) failed\n", dev_node);
214 err = -ENODEV;
215 goto _return_of_node_put;
216 }
217
218 of_node_put(dev_node);
219
220 /* Get the address of the memory mapped registers */
221 mac_dev->res = platform_get_mem_or_io(_of_dev, 0);
222 if (!mac_dev->res) {
223 dev_err(dev, "could not get registers\n");
224 return -EINVAL;
225 }
226
227 err = devm_request_resource(dev, fman_get_mem_region(priv->fman),
228 mac_dev->res);
229 if (err) {
230 dev_err_probe(dev, err, "could not request resource\n");
231 return err;
232 }
233
234 mac_dev->vaddr = devm_ioremap(dev, mac_dev->res->start,
235 resource_size(mac_dev->res));
236 if (!mac_dev->vaddr) {
237 dev_err(dev, "devm_ioremap() failed\n");
238 return -EIO;
239 }
240
241 if (!of_device_is_available(mac_node))
242 return -ENODEV;
243
244 /* Get the cell-index */
245 err = of_property_read_u32(mac_node, "cell-index", &val);
246 if (err) {
247 dev_err(dev, "failed to read cell-index for %pOF\n", mac_node);
248 return -EINVAL;
249 }
250 priv->cell_index = (u8)val;
251
252 /* Get the MAC address */
253 err = of_get_mac_address(mac_node, mac_dev->addr);
254 if (err)
255 dev_warn(dev, "of_get_mac_address(%pOF) failed\n", mac_node);
256
257 /* Get the port handles */
258 nph = of_count_phandle_with_args(mac_node, "fsl,fman-ports", NULL);
259 if (unlikely(nph < 0)) {
260 dev_err(dev, "of_count_phandle_with_args(%pOF, fsl,fman-ports) failed\n",
261 mac_node);
262 return nph;
263 }
264
265 if (nph != ARRAY_SIZE(mac_dev->port)) {
266 dev_err(dev, "Not supported number of fman-ports handles of mac node %pOF from device tree\n",
267 mac_node);
268 return -EINVAL;
269 }
270
271 for (i = 0; i < ARRAY_SIZE(mac_dev->port); i++) {
272 /* Find the port node */
273 dev_node = of_parse_phandle(mac_node, "fsl,fman-ports", i);
274 if (!dev_node) {
275 dev_err(dev, "of_parse_phandle(%pOF, fsl,fman-ports) failed\n",
276 mac_node);
277 return -EINVAL;
278 }
279
280 of_dev = of_find_device_by_node(dev_node);
281 if (!of_dev) {
282 dev_err(dev, "of_find_device_by_node(%pOF) failed\n",
283 dev_node);
284 err = -EINVAL;
285 goto _return_of_node_put;
286 }
287
288 mac_dev->port[i] = fman_port_bind(&of_dev->dev);
289 if (!mac_dev->port[i]) {
290 dev_err(dev, "dev_get_drvdata(%pOF) failed\n",
291 dev_node);
292 err = -EINVAL;
293 goto _return_of_node_put;
294 }
295 of_node_put(dev_node);
296 }
297
298 /* Get the PHY connection type */
299 err = of_get_phy_mode(mac_node, &phy_if);
300 if (err) {
301 dev_warn(dev,
302 "of_get_phy_mode() for %pOF failed. Defaulting to SGMII\n",
303 mac_node);
304 phy_if = PHY_INTERFACE_MODE_SGMII;
305 }
306 mac_dev->phy_if = phy_if;
307
308 params.mac_id = priv->cell_index;
309 params.fm = (void *)priv->fman;
310 params.exception_cb = mac_exception;
311 params.event_cb = mac_exception;
312
313 err = init(mac_dev, mac_node, ¶ms);
314 if (err < 0)
315 return err;
316
317 if (!is_zero_ether_addr(mac_dev->addr))
318 dev_info(dev, "FMan MAC address: %pM\n", mac_dev->addr);
319
320 priv->eth_dev = dpaa_eth_add_device(fman_id, mac_dev);
321 if (IS_ERR(priv->eth_dev)) {
322 err = PTR_ERR(priv->eth_dev);
323 dev_err(dev, "failed to add Ethernet platform device for MAC %d\n",
324 priv->cell_index);
325 priv->eth_dev = NULL;
326 }
327
328 return err;
329
330_return_of_node_put:
331 of_node_put(dev_node);
332 return err;
333}
334
335static void mac_remove(struct platform_device *pdev)
336{
337 struct mac_device *mac_dev = platform_get_drvdata(pdev);
338
339 platform_device_unregister(mac_dev->priv->eth_dev);
340}
341
342static struct platform_driver mac_driver = {
343 .driver = {
344 .name = KBUILD_MODNAME,
345 .of_match_table = mac_match,
346 },
347 .probe = mac_probe,
348 .remove_new = mac_remove,
349};
350
351builtin_platform_driver(mac_driver);
1/* Copyright 2008-2015 Freescale Semiconductor, Inc.
2 *
3 * Redistribution and use in source and binary forms, with or without
4 * modification, are permitted provided that the following conditions are met:
5 * * Redistributions of source code must retain the above copyright
6 * notice, this list of conditions and the following disclaimer.
7 * * Redistributions in binary form must reproduce the above copyright
8 * notice, this list of conditions and the following disclaimer in the
9 * documentation and/or other materials provided with the distribution.
10 * * Neither the name of Freescale Semiconductor nor the
11 * names of its contributors may be used to endorse or promote products
12 * derived from this software without specific prior written permission.
13 *
14 *
15 * ALTERNATIVELY, this software may be distributed under the terms of the
16 * GNU General Public License ("GPL") as published by the Free Software
17 * Foundation, either version 2 of that License or (at your option) any
18 * later version.
19 *
20 * THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY
21 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
22 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
23 * DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY
24 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
25 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
26 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
27 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
29 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 */
31
32#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
33
34#include <linux/init.h>
35#include <linux/module.h>
36#include <linux/of_address.h>
37#include <linux/of_platform.h>
38#include <linux/of_net.h>
39#include <linux/of_mdio.h>
40#include <linux/device.h>
41#include <linux/phy.h>
42#include <linux/netdevice.h>
43#include <linux/phy_fixed.h>
44#include <linux/etherdevice.h>
45#include <linux/libfdt_env.h>
46
47#include "mac.h"
48#include "fman_mac.h"
49#include "fman_dtsec.h"
50#include "fman_tgec.h"
51#include "fman_memac.h"
52
53MODULE_LICENSE("Dual BSD/GPL");
54MODULE_DESCRIPTION("FSL FMan MAC API based driver");
55
56struct mac_priv_s {
57 struct device *dev;
58 void __iomem *vaddr;
59 u8 cell_index;
60 struct fman *fman;
61 struct device_node *internal_phy_node;
62 /* List of multicast addresses */
63 struct list_head mc_addr_list;
64 struct platform_device *eth_dev;
65 struct fixed_phy_status *fixed_link;
66 u16 speed;
67 u16 max_speed;
68
69 int (*enable)(struct fman_mac *mac_dev, enum comm_mode mode);
70 int (*disable)(struct fman_mac *mac_dev, enum comm_mode mode);
71};
72
73struct mac_address {
74 u8 addr[ETH_ALEN];
75 struct list_head list;
76};
77
78static void mac_exception(void *handle, enum fman_mac_exceptions ex)
79{
80 struct mac_device *mac_dev;
81 struct mac_priv_s *priv;
82
83 mac_dev = handle;
84 priv = mac_dev->priv;
85
86 if (ex == FM_MAC_EX_10G_RX_FIFO_OVFL) {
87 /* don't flag RX FIFO after the first */
88 mac_dev->set_exception(mac_dev->fman_mac,
89 FM_MAC_EX_10G_RX_FIFO_OVFL, false);
90 dev_err(priv->dev, "10G MAC got RX FIFO Error = %x\n", ex);
91 }
92
93 dev_dbg(priv->dev, "%s:%s() -> %d\n", KBUILD_BASENAME ".c",
94 __func__, ex);
95}
96
97static void set_fman_mac_params(struct mac_device *mac_dev,
98 struct fman_mac_params *params)
99{
100 struct mac_priv_s *priv = mac_dev->priv;
101
102 params->base_addr = (typeof(params->base_addr))
103 devm_ioremap(priv->dev, mac_dev->res->start,
104 resource_size(mac_dev->res));
105 memcpy(¶ms->addr, mac_dev->addr, sizeof(mac_dev->addr));
106 params->max_speed = priv->max_speed;
107 params->phy_if = mac_dev->phy_if;
108 params->basex_if = false;
109 params->mac_id = priv->cell_index;
110 params->fm = (void *)priv->fman;
111 params->exception_cb = mac_exception;
112 params->event_cb = mac_exception;
113 params->dev_id = mac_dev;
114 params->internal_phy_node = priv->internal_phy_node;
115}
116
117static int tgec_initialization(struct mac_device *mac_dev)
118{
119 int err;
120 struct mac_priv_s *priv;
121 struct fman_mac_params params;
122 u32 version;
123
124 priv = mac_dev->priv;
125
126 set_fman_mac_params(mac_dev, ¶ms);
127
128 mac_dev->fman_mac = tgec_config(¶ms);
129 if (!mac_dev->fman_mac) {
130 err = -EINVAL;
131 goto _return;
132 }
133
134 err = tgec_cfg_max_frame_len(mac_dev->fman_mac, fman_get_max_frm());
135 if (err < 0)
136 goto _return_fm_mac_free;
137
138 err = tgec_init(mac_dev->fman_mac);
139 if (err < 0)
140 goto _return_fm_mac_free;
141
142 /* For 10G MAC, disable Tx ECC exception */
143 err = mac_dev->set_exception(mac_dev->fman_mac,
144 FM_MAC_EX_10G_TX_ECC_ER, false);
145 if (err < 0)
146 goto _return_fm_mac_free;
147
148 err = tgec_get_version(mac_dev->fman_mac, &version);
149 if (err < 0)
150 goto _return_fm_mac_free;
151
152 dev_info(priv->dev, "FMan XGEC version: 0x%08x\n", version);
153
154 goto _return;
155
156_return_fm_mac_free:
157 tgec_free(mac_dev->fman_mac);
158
159_return:
160 return err;
161}
162
163static int dtsec_initialization(struct mac_device *mac_dev)
164{
165 int err;
166 struct mac_priv_s *priv;
167 struct fman_mac_params params;
168 u32 version;
169
170 priv = mac_dev->priv;
171
172 set_fman_mac_params(mac_dev, ¶ms);
173
174 mac_dev->fman_mac = dtsec_config(¶ms);
175 if (!mac_dev->fman_mac) {
176 err = -EINVAL;
177 goto _return;
178 }
179
180 err = dtsec_cfg_max_frame_len(mac_dev->fman_mac, fman_get_max_frm());
181 if (err < 0)
182 goto _return_fm_mac_free;
183
184 err = dtsec_cfg_pad_and_crc(mac_dev->fman_mac, true);
185 if (err < 0)
186 goto _return_fm_mac_free;
187
188 err = dtsec_init(mac_dev->fman_mac);
189 if (err < 0)
190 goto _return_fm_mac_free;
191
192 /* For 1G MAC, disable by default the MIB counters overflow interrupt */
193 err = mac_dev->set_exception(mac_dev->fman_mac,
194 FM_MAC_EX_1G_RX_MIB_CNT_OVFL, false);
195 if (err < 0)
196 goto _return_fm_mac_free;
197
198 err = dtsec_get_version(mac_dev->fman_mac, &version);
199 if (err < 0)
200 goto _return_fm_mac_free;
201
202 dev_info(priv->dev, "FMan dTSEC version: 0x%08x\n", version);
203
204 goto _return;
205
206_return_fm_mac_free:
207 dtsec_free(mac_dev->fman_mac);
208
209_return:
210 return err;
211}
212
213static int memac_initialization(struct mac_device *mac_dev)
214{
215 int err;
216 struct mac_priv_s *priv;
217 struct fman_mac_params params;
218
219 priv = mac_dev->priv;
220
221 set_fman_mac_params(mac_dev, ¶ms);
222
223 if (priv->max_speed == SPEED_10000)
224 params.phy_if = PHY_INTERFACE_MODE_XGMII;
225
226 mac_dev->fman_mac = memac_config(¶ms);
227 if (!mac_dev->fman_mac) {
228 err = -EINVAL;
229 goto _return;
230 }
231
232 err = memac_cfg_max_frame_len(mac_dev->fman_mac, fman_get_max_frm());
233 if (err < 0)
234 goto _return_fm_mac_free;
235
236 err = memac_cfg_reset_on_init(mac_dev->fman_mac, true);
237 if (err < 0)
238 goto _return_fm_mac_free;
239
240 err = memac_cfg_fixed_link(mac_dev->fman_mac, priv->fixed_link);
241 if (err < 0)
242 goto _return_fm_mac_free;
243
244 err = memac_init(mac_dev->fman_mac);
245 if (err < 0)
246 goto _return_fm_mac_free;
247
248 dev_info(priv->dev, "FMan MEMAC\n");
249
250 goto _return;
251
252_return_fm_mac_free:
253 memac_free(mac_dev->fman_mac);
254
255_return:
256 return err;
257}
258
259static int start(struct mac_device *mac_dev)
260{
261 int err;
262 struct phy_device *phy_dev = mac_dev->phy_dev;
263 struct mac_priv_s *priv = mac_dev->priv;
264
265 err = priv->enable(mac_dev->fman_mac, COMM_MODE_RX_AND_TX);
266 if (!err && phy_dev)
267 phy_start(phy_dev);
268
269 return err;
270}
271
272static int stop(struct mac_device *mac_dev)
273{
274 struct mac_priv_s *priv = mac_dev->priv;
275
276 if (mac_dev->phy_dev)
277 phy_stop(mac_dev->phy_dev);
278
279 return priv->disable(mac_dev->fman_mac, COMM_MODE_RX_AND_TX);
280}
281
282static int set_multi(struct net_device *net_dev, struct mac_device *mac_dev)
283{
284 struct mac_priv_s *priv;
285 struct mac_address *old_addr, *tmp;
286 struct netdev_hw_addr *ha;
287 int err;
288 enet_addr_t *addr;
289
290 priv = mac_dev->priv;
291
292 /* Clear previous address list */
293 list_for_each_entry_safe(old_addr, tmp, &priv->mc_addr_list, list) {
294 addr = (enet_addr_t *)old_addr->addr;
295 err = mac_dev->remove_hash_mac_addr(mac_dev->fman_mac, addr);
296 if (err < 0)
297 return err;
298
299 list_del(&old_addr->list);
300 kfree(old_addr);
301 }
302
303 /* Add all the addresses from the new list */
304 netdev_for_each_mc_addr(ha, net_dev) {
305 addr = (enet_addr_t *)ha->addr;
306 err = mac_dev->add_hash_mac_addr(mac_dev->fman_mac, addr);
307 if (err < 0)
308 return err;
309
310 tmp = kmalloc(sizeof(*tmp), GFP_ATOMIC);
311 if (!tmp)
312 return -ENOMEM;
313
314 ether_addr_copy(tmp->addr, ha->addr);
315 list_add(&tmp->list, &priv->mc_addr_list);
316 }
317 return 0;
318}
319
320/**
321 * fman_set_mac_active_pause
322 * @mac_dev: A pointer to the MAC device
323 * @rx: Pause frame setting for RX
324 * @tx: Pause frame setting for TX
325 *
326 * Set the MAC RX/TX PAUSE frames settings
327 *
328 * Avoid redundant calls to FMD, if the MAC driver already contains the desired
329 * active PAUSE settings. Otherwise, the new active settings should be reflected
330 * in FMan.
331 *
332 * Return: 0 on success; Error code otherwise.
333 */
334int fman_set_mac_active_pause(struct mac_device *mac_dev, bool rx, bool tx)
335{
336 struct fman_mac *fman_mac = mac_dev->fman_mac;
337 int err = 0;
338
339 if (rx != mac_dev->rx_pause_active) {
340 err = mac_dev->set_rx_pause(fman_mac, rx);
341 if (likely(err == 0))
342 mac_dev->rx_pause_active = rx;
343 }
344
345 if (tx != mac_dev->tx_pause_active) {
346 u16 pause_time = (tx ? FSL_FM_PAUSE_TIME_ENABLE :
347 FSL_FM_PAUSE_TIME_DISABLE);
348
349 err = mac_dev->set_tx_pause(fman_mac, 0, pause_time, 0);
350
351 if (likely(err == 0))
352 mac_dev->tx_pause_active = tx;
353 }
354
355 return err;
356}
357EXPORT_SYMBOL(fman_set_mac_active_pause);
358
359/**
360 * fman_get_pause_cfg
361 * @mac_dev: A pointer to the MAC device
362 * @rx: Return value for RX setting
363 * @tx: Return value for TX setting
364 *
365 * Determine the MAC RX/TX PAUSE frames settings based on PHY
366 * autonegotiation or values set by eththool.
367 *
368 * Return: Pointer to FMan device.
369 */
370void fman_get_pause_cfg(struct mac_device *mac_dev, bool *rx_pause,
371 bool *tx_pause)
372{
373 struct phy_device *phy_dev = mac_dev->phy_dev;
374 u16 lcl_adv, rmt_adv;
375 u8 flowctrl;
376
377 *rx_pause = *tx_pause = false;
378
379 if (!phy_dev->duplex)
380 return;
381
382 /* If PAUSE autonegotiation is disabled, the TX/RX PAUSE settings
383 * are those set by ethtool.
384 */
385 if (!mac_dev->autoneg_pause) {
386 *rx_pause = mac_dev->rx_pause_req;
387 *tx_pause = mac_dev->tx_pause_req;
388 return;
389 }
390
391 /* Else if PAUSE autonegotiation is enabled, the TX/RX PAUSE
392 * settings depend on the result of the link negotiation.
393 */
394
395 /* get local capabilities */
396 lcl_adv = linkmode_adv_to_lcl_adv_t(phy_dev->advertising);
397
398 /* get link partner capabilities */
399 rmt_adv = 0;
400 if (phy_dev->pause)
401 rmt_adv |= LPA_PAUSE_CAP;
402 if (phy_dev->asym_pause)
403 rmt_adv |= LPA_PAUSE_ASYM;
404
405 /* Calculate TX/RX settings based on local and peer advertised
406 * symmetric/asymmetric PAUSE capabilities.
407 */
408 flowctrl = mii_resolve_flowctrl_fdx(lcl_adv, rmt_adv);
409 if (flowctrl & FLOW_CTRL_RX)
410 *rx_pause = true;
411 if (flowctrl & FLOW_CTRL_TX)
412 *tx_pause = true;
413}
414EXPORT_SYMBOL(fman_get_pause_cfg);
415
416static void adjust_link_void(struct mac_device *mac_dev)
417{
418}
419
420static void adjust_link_dtsec(struct mac_device *mac_dev)
421{
422 struct phy_device *phy_dev = mac_dev->phy_dev;
423 struct fman_mac *fman_mac;
424 bool rx_pause, tx_pause;
425 int err;
426
427 fman_mac = mac_dev->fman_mac;
428 if (!phy_dev->link) {
429 dtsec_restart_autoneg(fman_mac);
430
431 return;
432 }
433
434 dtsec_adjust_link(fman_mac, phy_dev->speed);
435 fman_get_pause_cfg(mac_dev, &rx_pause, &tx_pause);
436 err = fman_set_mac_active_pause(mac_dev, rx_pause, tx_pause);
437 if (err < 0)
438 dev_err(mac_dev->priv->dev, "fman_set_mac_active_pause() = %d\n",
439 err);
440}
441
442static void adjust_link_memac(struct mac_device *mac_dev)
443{
444 struct phy_device *phy_dev = mac_dev->phy_dev;
445 struct fman_mac *fman_mac;
446 bool rx_pause, tx_pause;
447 int err;
448
449 fman_mac = mac_dev->fman_mac;
450 memac_adjust_link(fman_mac, phy_dev->speed);
451
452 fman_get_pause_cfg(mac_dev, &rx_pause, &tx_pause);
453 err = fman_set_mac_active_pause(mac_dev, rx_pause, tx_pause);
454 if (err < 0)
455 dev_err(mac_dev->priv->dev, "fman_set_mac_active_pause() = %d\n",
456 err);
457}
458
459static void setup_dtsec(struct mac_device *mac_dev)
460{
461 mac_dev->init = dtsec_initialization;
462 mac_dev->set_promisc = dtsec_set_promiscuous;
463 mac_dev->change_addr = dtsec_modify_mac_address;
464 mac_dev->add_hash_mac_addr = dtsec_add_hash_mac_address;
465 mac_dev->remove_hash_mac_addr = dtsec_del_hash_mac_address;
466 mac_dev->set_tx_pause = dtsec_set_tx_pause_frames;
467 mac_dev->set_rx_pause = dtsec_accept_rx_pause_frames;
468 mac_dev->set_exception = dtsec_set_exception;
469 mac_dev->set_allmulti = dtsec_set_allmulti;
470 mac_dev->set_tstamp = dtsec_set_tstamp;
471 mac_dev->set_multi = set_multi;
472 mac_dev->start = start;
473 mac_dev->stop = stop;
474 mac_dev->adjust_link = adjust_link_dtsec;
475 mac_dev->priv->enable = dtsec_enable;
476 mac_dev->priv->disable = dtsec_disable;
477}
478
479static void setup_tgec(struct mac_device *mac_dev)
480{
481 mac_dev->init = tgec_initialization;
482 mac_dev->set_promisc = tgec_set_promiscuous;
483 mac_dev->change_addr = tgec_modify_mac_address;
484 mac_dev->add_hash_mac_addr = tgec_add_hash_mac_address;
485 mac_dev->remove_hash_mac_addr = tgec_del_hash_mac_address;
486 mac_dev->set_tx_pause = tgec_set_tx_pause_frames;
487 mac_dev->set_rx_pause = tgec_accept_rx_pause_frames;
488 mac_dev->set_exception = tgec_set_exception;
489 mac_dev->set_allmulti = tgec_set_allmulti;
490 mac_dev->set_tstamp = tgec_set_tstamp;
491 mac_dev->set_multi = set_multi;
492 mac_dev->start = start;
493 mac_dev->stop = stop;
494 mac_dev->adjust_link = adjust_link_void;
495 mac_dev->priv->enable = tgec_enable;
496 mac_dev->priv->disable = tgec_disable;
497}
498
499static void setup_memac(struct mac_device *mac_dev)
500{
501 mac_dev->init = memac_initialization;
502 mac_dev->set_promisc = memac_set_promiscuous;
503 mac_dev->change_addr = memac_modify_mac_address;
504 mac_dev->add_hash_mac_addr = memac_add_hash_mac_address;
505 mac_dev->remove_hash_mac_addr = memac_del_hash_mac_address;
506 mac_dev->set_tx_pause = memac_set_tx_pause_frames;
507 mac_dev->set_rx_pause = memac_accept_rx_pause_frames;
508 mac_dev->set_exception = memac_set_exception;
509 mac_dev->set_allmulti = memac_set_allmulti;
510 mac_dev->set_tstamp = memac_set_tstamp;
511 mac_dev->set_multi = set_multi;
512 mac_dev->start = start;
513 mac_dev->stop = stop;
514 mac_dev->adjust_link = adjust_link_memac;
515 mac_dev->priv->enable = memac_enable;
516 mac_dev->priv->disable = memac_disable;
517}
518
519#define DTSEC_SUPPORTED \
520 (SUPPORTED_10baseT_Half \
521 | SUPPORTED_10baseT_Full \
522 | SUPPORTED_100baseT_Half \
523 | SUPPORTED_100baseT_Full \
524 | SUPPORTED_Autoneg \
525 | SUPPORTED_Pause \
526 | SUPPORTED_Asym_Pause \
527 | SUPPORTED_MII)
528
529static DEFINE_MUTEX(eth_lock);
530
531static const u16 phy2speed[] = {
532 [PHY_INTERFACE_MODE_MII] = SPEED_100,
533 [PHY_INTERFACE_MODE_GMII] = SPEED_1000,
534 [PHY_INTERFACE_MODE_SGMII] = SPEED_1000,
535 [PHY_INTERFACE_MODE_TBI] = SPEED_1000,
536 [PHY_INTERFACE_MODE_RMII] = SPEED_100,
537 [PHY_INTERFACE_MODE_RGMII] = SPEED_1000,
538 [PHY_INTERFACE_MODE_RGMII_ID] = SPEED_1000,
539 [PHY_INTERFACE_MODE_RGMII_RXID] = SPEED_1000,
540 [PHY_INTERFACE_MODE_RGMII_TXID] = SPEED_1000,
541 [PHY_INTERFACE_MODE_RTBI] = SPEED_1000,
542 [PHY_INTERFACE_MODE_QSGMII] = SPEED_1000,
543 [PHY_INTERFACE_MODE_XGMII] = SPEED_10000
544};
545
546static struct platform_device *dpaa_eth_add_device(int fman_id,
547 struct mac_device *mac_dev)
548{
549 struct platform_device *pdev;
550 struct dpaa_eth_data data;
551 struct mac_priv_s *priv;
552 static int dpaa_eth_dev_cnt;
553 int ret;
554
555 priv = mac_dev->priv;
556
557 data.mac_dev = mac_dev;
558 data.mac_hw_id = priv->cell_index;
559 data.fman_hw_id = fman_id;
560
561 mutex_lock(ð_lock);
562 pdev = platform_device_alloc("dpaa-ethernet", dpaa_eth_dev_cnt);
563 if (!pdev) {
564 ret = -ENOMEM;
565 goto no_mem;
566 }
567
568 pdev->dev.parent = priv->dev;
569
570 ret = platform_device_add_data(pdev, &data, sizeof(data));
571 if (ret)
572 goto err;
573
574 ret = platform_device_add(pdev);
575 if (ret)
576 goto err;
577
578 dpaa_eth_dev_cnt++;
579 mutex_unlock(ð_lock);
580
581 return pdev;
582
583err:
584 platform_device_put(pdev);
585no_mem:
586 mutex_unlock(ð_lock);
587
588 return ERR_PTR(ret);
589}
590
591static const struct of_device_id mac_match[] = {
592 { .compatible = "fsl,fman-dtsec" },
593 { .compatible = "fsl,fman-xgec" },
594 { .compatible = "fsl,fman-memac" },
595 {}
596};
597MODULE_DEVICE_TABLE(of, mac_match);
598
599static int mac_probe(struct platform_device *_of_dev)
600{
601 int err, i, nph;
602 struct device *dev;
603 struct device_node *mac_node, *dev_node;
604 struct mac_device *mac_dev;
605 struct platform_device *of_dev;
606 struct resource res;
607 struct mac_priv_s *priv;
608 const u8 *mac_addr;
609 u32 val;
610 u8 fman_id;
611 int phy_if;
612
613 dev = &_of_dev->dev;
614 mac_node = dev->of_node;
615
616 mac_dev = devm_kzalloc(dev, sizeof(*mac_dev), GFP_KERNEL);
617 if (!mac_dev) {
618 err = -ENOMEM;
619 goto _return;
620 }
621 priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
622 if (!priv) {
623 err = -ENOMEM;
624 goto _return;
625 }
626
627 /* Save private information */
628 mac_dev->priv = priv;
629 priv->dev = dev;
630
631 if (of_device_is_compatible(mac_node, "fsl,fman-dtsec")) {
632 setup_dtsec(mac_dev);
633 priv->internal_phy_node = of_parse_phandle(mac_node,
634 "tbi-handle", 0);
635 } else if (of_device_is_compatible(mac_node, "fsl,fman-xgec")) {
636 setup_tgec(mac_dev);
637 } else if (of_device_is_compatible(mac_node, "fsl,fman-memac")) {
638 setup_memac(mac_dev);
639 priv->internal_phy_node = of_parse_phandle(mac_node,
640 "pcsphy-handle", 0);
641 } else {
642 dev_err(dev, "MAC node (%pOF) contains unsupported MAC\n",
643 mac_node);
644 err = -EINVAL;
645 goto _return;
646 }
647
648 INIT_LIST_HEAD(&priv->mc_addr_list);
649
650 /* Get the FM node */
651 dev_node = of_get_parent(mac_node);
652 if (!dev_node) {
653 dev_err(dev, "of_get_parent(%pOF) failed\n",
654 mac_node);
655 err = -EINVAL;
656 goto _return_of_get_parent;
657 }
658
659 of_dev = of_find_device_by_node(dev_node);
660 if (!of_dev) {
661 dev_err(dev, "of_find_device_by_node(%pOF) failed\n", dev_node);
662 err = -EINVAL;
663 goto _return_of_node_put;
664 }
665
666 /* Get the FMan cell-index */
667 err = of_property_read_u32(dev_node, "cell-index", &val);
668 if (err) {
669 dev_err(dev, "failed to read cell-index for %pOF\n", dev_node);
670 err = -EINVAL;
671 goto _return_of_node_put;
672 }
673 /* cell-index 0 => FMan id 1 */
674 fman_id = (u8)(val + 1);
675
676 priv->fman = fman_bind(&of_dev->dev);
677 if (!priv->fman) {
678 dev_err(dev, "fman_bind(%pOF) failed\n", dev_node);
679 err = -ENODEV;
680 goto _return_of_node_put;
681 }
682
683 of_node_put(dev_node);
684
685 /* Get the address of the memory mapped registers */
686 err = of_address_to_resource(mac_node, 0, &res);
687 if (err < 0) {
688 dev_err(dev, "of_address_to_resource(%pOF) = %d\n",
689 mac_node, err);
690 goto _return_of_get_parent;
691 }
692
693 mac_dev->res = __devm_request_region(dev,
694 fman_get_mem_region(priv->fman),
695 res.start, res.end + 1 - res.start,
696 "mac");
697 if (!mac_dev->res) {
698 dev_err(dev, "__devm_request_mem_region(mac) failed\n");
699 err = -EBUSY;
700 goto _return_of_get_parent;
701 }
702
703 priv->vaddr = devm_ioremap(dev, mac_dev->res->start,
704 mac_dev->res->end + 1 - mac_dev->res->start);
705 if (!priv->vaddr) {
706 dev_err(dev, "devm_ioremap() failed\n");
707 err = -EIO;
708 goto _return_of_get_parent;
709 }
710
711 if (!of_device_is_available(mac_node)) {
712 err = -ENODEV;
713 goto _return_of_get_parent;
714 }
715
716 /* Get the cell-index */
717 err = of_property_read_u32(mac_node, "cell-index", &val);
718 if (err) {
719 dev_err(dev, "failed to read cell-index for %pOF\n", mac_node);
720 err = -EINVAL;
721 goto _return_of_get_parent;
722 }
723 priv->cell_index = (u8)val;
724
725 /* Get the MAC address */
726 mac_addr = of_get_mac_address(mac_node);
727 if (IS_ERR(mac_addr)) {
728 dev_err(dev, "of_get_mac_address(%pOF) failed\n", mac_node);
729 err = -EINVAL;
730 goto _return_of_get_parent;
731 }
732 ether_addr_copy(mac_dev->addr, mac_addr);
733
734 /* Get the port handles */
735 nph = of_count_phandle_with_args(mac_node, "fsl,fman-ports", NULL);
736 if (unlikely(nph < 0)) {
737 dev_err(dev, "of_count_phandle_with_args(%pOF, fsl,fman-ports) failed\n",
738 mac_node);
739 err = nph;
740 goto _return_of_get_parent;
741 }
742
743 if (nph != ARRAY_SIZE(mac_dev->port)) {
744 dev_err(dev, "Not supported number of fman-ports handles of mac node %pOF from device tree\n",
745 mac_node);
746 err = -EINVAL;
747 goto _return_of_get_parent;
748 }
749
750 for (i = 0; i < ARRAY_SIZE(mac_dev->port); i++) {
751 /* Find the port node */
752 dev_node = of_parse_phandle(mac_node, "fsl,fman-ports", i);
753 if (!dev_node) {
754 dev_err(dev, "of_parse_phandle(%pOF, fsl,fman-ports) failed\n",
755 mac_node);
756 err = -EINVAL;
757 goto _return_of_node_put;
758 }
759
760 of_dev = of_find_device_by_node(dev_node);
761 if (!of_dev) {
762 dev_err(dev, "of_find_device_by_node(%pOF) failed\n",
763 dev_node);
764 err = -EINVAL;
765 goto _return_of_node_put;
766 }
767
768 mac_dev->port[i] = fman_port_bind(&of_dev->dev);
769 if (!mac_dev->port[i]) {
770 dev_err(dev, "dev_get_drvdata(%pOF) failed\n",
771 dev_node);
772 err = -EINVAL;
773 goto _return_of_node_put;
774 }
775 of_node_put(dev_node);
776 }
777
778 /* Get the PHY connection type */
779 phy_if = of_get_phy_mode(mac_node);
780 if (phy_if < 0) {
781 dev_warn(dev,
782 "of_get_phy_mode() for %pOF failed. Defaulting to SGMII\n",
783 mac_node);
784 phy_if = PHY_INTERFACE_MODE_SGMII;
785 }
786 mac_dev->phy_if = phy_if;
787
788 priv->speed = phy2speed[mac_dev->phy_if];
789 priv->max_speed = priv->speed;
790 mac_dev->if_support = DTSEC_SUPPORTED;
791 /* We don't support half-duplex in SGMII mode */
792 if (mac_dev->phy_if == PHY_INTERFACE_MODE_SGMII)
793 mac_dev->if_support &= ~(SUPPORTED_10baseT_Half |
794 SUPPORTED_100baseT_Half);
795
796 /* Gigabit support (no half-duplex) */
797 if (priv->max_speed == 1000)
798 mac_dev->if_support |= SUPPORTED_1000baseT_Full;
799
800 /* The 10G interface only supports one mode */
801 if (mac_dev->phy_if == PHY_INTERFACE_MODE_XGMII)
802 mac_dev->if_support = SUPPORTED_10000baseT_Full;
803
804 /* Get the rest of the PHY information */
805 mac_dev->phy_node = of_parse_phandle(mac_node, "phy-handle", 0);
806 if (!mac_dev->phy_node && of_phy_is_fixed_link(mac_node)) {
807 struct phy_device *phy;
808
809 err = of_phy_register_fixed_link(mac_node);
810 if (err)
811 goto _return_of_get_parent;
812
813 priv->fixed_link = kzalloc(sizeof(*priv->fixed_link),
814 GFP_KERNEL);
815 if (!priv->fixed_link) {
816 err = -ENOMEM;
817 goto _return_of_get_parent;
818 }
819
820 mac_dev->phy_node = of_node_get(mac_node);
821 phy = of_phy_find_device(mac_dev->phy_node);
822 if (!phy) {
823 err = -EINVAL;
824 of_node_put(mac_dev->phy_node);
825 goto _return_of_get_parent;
826 }
827
828 priv->fixed_link->link = phy->link;
829 priv->fixed_link->speed = phy->speed;
830 priv->fixed_link->duplex = phy->duplex;
831 priv->fixed_link->pause = phy->pause;
832 priv->fixed_link->asym_pause = phy->asym_pause;
833
834 put_device(&phy->mdio.dev);
835 }
836
837 err = mac_dev->init(mac_dev);
838 if (err < 0) {
839 dev_err(dev, "mac_dev->init() = %d\n", err);
840 of_node_put(mac_dev->phy_node);
841 goto _return_of_get_parent;
842 }
843
844 /* pause frame autonegotiation enabled */
845 mac_dev->autoneg_pause = true;
846
847 /* By intializing the values to false, force FMD to enable PAUSE frames
848 * on RX and TX
849 */
850 mac_dev->rx_pause_req = true;
851 mac_dev->tx_pause_req = true;
852 mac_dev->rx_pause_active = false;
853 mac_dev->tx_pause_active = false;
854 err = fman_set_mac_active_pause(mac_dev, true, true);
855 if (err < 0)
856 dev_err(dev, "fman_set_mac_active_pause() = %d\n", err);
857
858 dev_info(dev, "FMan MAC address: %pM\n", mac_dev->addr);
859
860 priv->eth_dev = dpaa_eth_add_device(fman_id, mac_dev);
861 if (IS_ERR(priv->eth_dev)) {
862 dev_err(dev, "failed to add Ethernet platform device for MAC %d\n",
863 priv->cell_index);
864 priv->eth_dev = NULL;
865 }
866
867 goto _return;
868
869_return_of_node_put:
870 of_node_put(dev_node);
871_return_of_get_parent:
872 kfree(priv->fixed_link);
873_return:
874 return err;
875}
876
877static struct platform_driver mac_driver = {
878 .driver = {
879 .name = KBUILD_MODNAME,
880 .of_match_table = mac_match,
881 },
882 .probe = mac_probe,
883};
884
885builtin_platform_driver(mac_driver);