[kernel] make rtl8366 driver OF capable
[openwrt.git] / target / linux / generic / files / drivers / net / phy / rtl8366s.c
1 /*
2  * Platform driver for the Realtek RTL8366S ethernet switch
3  *
4  * Copyright (C) 2009-2010 Gabor Juhos <juhosg@openwrt.org>
5  * Copyright (C) 2010 Antti Seppälä <a.seppala@gmail.com>
6  *
7  * This program is free software; you can redistribute it and/or modify it
8  * under the terms of the GNU General Public License version 2 as published
9  * by the Free Software Foundation.
10  */
11
12 #include <linux/kernel.h>
13 #include <linux/module.h>
14 #include <linux/init.h>
15 #include <linux/of_platform.h>
16 #include <linux/delay.h>
17 #include <linux/skbuff.h>
18 #include <linux/rtl8366.h>
19
20 #include "rtl8366_smi.h"
21
22 #define RTL8366S_DRIVER_DESC    "Realtek RTL8366S ethernet switch driver"
23 #define RTL8366S_DRIVER_VER     "0.2.2"
24
25 #define RTL8366S_PHY_NO_MAX     4
26 #define RTL8366S_PHY_PAGE_MAX   7
27 #define RTL8366S_PHY_ADDR_MAX   31
28
29 /* Switch Global Configuration register */
30 #define RTL8366S_SGCR                           0x0000
31 #define RTL8366S_SGCR_EN_BC_STORM_CTRL          BIT(0)
32 #define RTL8366S_SGCR_MAX_LENGTH(_x)            (_x << 4)
33 #define RTL8366S_SGCR_MAX_LENGTH_MASK           RTL8366S_SGCR_MAX_LENGTH(0x3)
34 #define RTL8366S_SGCR_MAX_LENGTH_1522           RTL8366S_SGCR_MAX_LENGTH(0x0)
35 #define RTL8366S_SGCR_MAX_LENGTH_1536           RTL8366S_SGCR_MAX_LENGTH(0x1)
36 #define RTL8366S_SGCR_MAX_LENGTH_1552           RTL8366S_SGCR_MAX_LENGTH(0x2)
37 #define RTL8366S_SGCR_MAX_LENGTH_16000          RTL8366S_SGCR_MAX_LENGTH(0x3)
38 #define RTL8366S_SGCR_EN_VLAN                   BIT(13)
39
40 /* Port Enable Control register */
41 #define RTL8366S_PECR                           0x0001
42
43 /* Switch Security Control registers */
44 #define RTL8366S_SSCR0                          0x0002
45 #define RTL8366S_SSCR1                          0x0003
46 #define RTL8366S_SSCR2                          0x0004
47 #define RTL8366S_SSCR2_DROP_UNKNOWN_DA          BIT(0)
48
49 #define RTL8366S_RESET_CTRL_REG                 0x0100
50 #define RTL8366S_CHIP_CTRL_RESET_HW             1
51 #define RTL8366S_CHIP_CTRL_RESET_SW             (1 << 1)
52
53 #define RTL8366S_CHIP_VERSION_CTRL_REG          0x0104
54 #define RTL8366S_CHIP_VERSION_MASK              0xf
55 #define RTL8366S_CHIP_ID_REG                    0x0105
56 #define RTL8366S_CHIP_ID_8366                   0x8366
57
58 /* PHY registers control */
59 #define RTL8366S_PHY_ACCESS_CTRL_REG            0x8028
60 #define RTL8366S_PHY_ACCESS_DATA_REG            0x8029
61
62 #define RTL8366S_PHY_CTRL_READ                  1
63 #define RTL8366S_PHY_CTRL_WRITE                 0
64
65 #define RTL8366S_PHY_REG_MASK                   0x1f
66 #define RTL8366S_PHY_PAGE_OFFSET                5
67 #define RTL8366S_PHY_PAGE_MASK                  (0x7 << 5)
68 #define RTL8366S_PHY_NO_OFFSET                  9
69 #define RTL8366S_PHY_NO_MASK                    (0x1f << 9)
70
71 /* LED control registers */
72 #define RTL8366S_LED_BLINKRATE_REG              0x0420
73 #define RTL8366S_LED_BLINKRATE_BIT              0
74 #define RTL8366S_LED_BLINKRATE_MASK             0x0007
75
76 #define RTL8366S_LED_CTRL_REG                   0x0421
77 #define RTL8366S_LED_0_1_CTRL_REG               0x0422
78 #define RTL8366S_LED_2_3_CTRL_REG               0x0423
79
80 #define RTL8366S_MIB_COUNT                      33
81 #define RTL8366S_GLOBAL_MIB_COUNT               1
82 #define RTL8366S_MIB_COUNTER_PORT_OFFSET        0x0040
83 #define RTL8366S_MIB_COUNTER_BASE               0x1000
84 #define RTL8366S_MIB_COUNTER_PORT_OFFSET2       0x0008
85 #define RTL8366S_MIB_COUNTER_BASE2              0x1180
86 #define RTL8366S_MIB_CTRL_REG                   0x11F0
87 #define RTL8366S_MIB_CTRL_USER_MASK             0x01FF
88 #define RTL8366S_MIB_CTRL_BUSY_MASK             0x0001
89 #define RTL8366S_MIB_CTRL_RESET_MASK            0x0002
90
91 #define RTL8366S_MIB_CTRL_GLOBAL_RESET_MASK     0x0004
92 #define RTL8366S_MIB_CTRL_PORT_RESET_BIT        0x0003
93 #define RTL8366S_MIB_CTRL_PORT_RESET_MASK       0x01FC
94
95
96 #define RTL8366S_PORT_VLAN_CTRL_BASE            0x0058
97 #define RTL8366S_PORT_VLAN_CTRL_REG(_p)  \
98                 (RTL8366S_PORT_VLAN_CTRL_BASE + (_p) / 4)
99 #define RTL8366S_PORT_VLAN_CTRL_MASK            0xf
100 #define RTL8366S_PORT_VLAN_CTRL_SHIFT(_p)       (4 * ((_p) % 4))
101
102
103 #define RTL8366S_VLAN_TABLE_READ_BASE           0x018B
104 #define RTL8366S_VLAN_TABLE_WRITE_BASE          0x0185
105
106 #define RTL8366S_VLAN_TB_CTRL_REG               0x010F
107
108 #define RTL8366S_TABLE_ACCESS_CTRL_REG          0x0180
109 #define RTL8366S_TABLE_VLAN_READ_CTRL           0x0E01
110 #define RTL8366S_TABLE_VLAN_WRITE_CTRL          0x0F01
111
112 #define RTL8366S_VLAN_MC_BASE(_x)               (0x0016 + (_x) * 2)
113
114 #define RTL8366S_VLAN_MEMBERINGRESS_REG         0x0379
115
116 #define RTL8366S_PORT_LINK_STATUS_BASE          0x0060
117 #define RTL8366S_PORT_STATUS_SPEED_MASK         0x0003
118 #define RTL8366S_PORT_STATUS_DUPLEX_MASK        0x0004
119 #define RTL8366S_PORT_STATUS_LINK_MASK          0x0010
120 #define RTL8366S_PORT_STATUS_TXPAUSE_MASK       0x0020
121 #define RTL8366S_PORT_STATUS_RXPAUSE_MASK       0x0040
122 #define RTL8366S_PORT_STATUS_AN_MASK            0x0080
123
124
125 #define RTL8366S_PORT_NUM_CPU           5
126 #define RTL8366S_NUM_PORTS              6
127 #define RTL8366S_NUM_VLANS              16
128 #define RTL8366S_NUM_LEDGROUPS          4
129 #define RTL8366S_NUM_VIDS               4096
130 #define RTL8366S_PRIORITYMAX            7
131 #define RTL8366S_FIDMAX                 7
132
133
134 #define RTL8366S_PORT_1                 (1 << 0) /* In userspace port 0 */
135 #define RTL8366S_PORT_2                 (1 << 1) /* In userspace port 1 */
136 #define RTL8366S_PORT_3                 (1 << 2) /* In userspace port 2 */
137 #define RTL8366S_PORT_4                 (1 << 3) /* In userspace port 3 */
138
139 #define RTL8366S_PORT_UNKNOWN           (1 << 4) /* No known connection */
140 #define RTL8366S_PORT_CPU               (1 << 5) /* CPU port */
141
142 #define RTL8366S_PORT_ALL               (RTL8366S_PORT_1 |      \
143                                          RTL8366S_PORT_2 |      \
144                                          RTL8366S_PORT_3 |      \
145                                          RTL8366S_PORT_4 |      \
146                                          RTL8366S_PORT_UNKNOWN | \
147                                          RTL8366S_PORT_CPU)
148
149 #define RTL8366S_PORT_ALL_BUT_CPU       (RTL8366S_PORT_1 |      \
150                                          RTL8366S_PORT_2 |      \
151                                          RTL8366S_PORT_3 |      \
152                                          RTL8366S_PORT_4 |      \
153                                          RTL8366S_PORT_UNKNOWN)
154
155 #define RTL8366S_PORT_ALL_EXTERNAL      (RTL8366S_PORT_1 |      \
156                                          RTL8366S_PORT_2 |      \
157                                          RTL8366S_PORT_3 |      \
158                                          RTL8366S_PORT_4)
159
160 #define RTL8366S_PORT_ALL_INTERNAL      (RTL8366S_PORT_UNKNOWN | \
161                                          RTL8366S_PORT_CPU)
162
163 #define RTL8366S_VLAN_VID_MASK          0xfff
164 #define RTL8366S_VLAN_PRIORITY_SHIFT    12
165 #define RTL8366S_VLAN_PRIORITY_MASK     0x7
166 #define RTL8366S_VLAN_MEMBER_MASK       0x3f
167 #define RTL8366S_VLAN_UNTAG_SHIFT       6
168 #define RTL8366S_VLAN_UNTAG_MASK        0x3f
169 #define RTL8366S_VLAN_FID_SHIFT         12
170 #define RTL8366S_VLAN_FID_MASK          0x7
171
172 static struct rtl8366_mib_counter rtl8366s_mib_counters[] = {
173         { 0,  0, 4, "IfInOctets"                                },
174         { 0,  4, 4, "EtherStatsOctets"                          },
175         { 0,  8, 2, "EtherStatsUnderSizePkts"                   },
176         { 0, 10, 2, "EtherFragments"                            },
177         { 0, 12, 2, "EtherStatsPkts64Octets"                    },
178         { 0, 14, 2, "EtherStatsPkts65to127Octets"               },
179         { 0, 16, 2, "EtherStatsPkts128to255Octets"              },
180         { 0, 18, 2, "EtherStatsPkts256to511Octets"              },
181         { 0, 20, 2, "EtherStatsPkts512to1023Octets"             },
182         { 0, 22, 2, "EtherStatsPkts1024to1518Octets"            },
183         { 0, 24, 2, "EtherOversizeStats"                        },
184         { 0, 26, 2, "EtherStatsJabbers"                         },
185         { 0, 28, 2, "IfInUcastPkts"                             },
186         { 0, 30, 2, "EtherStatsMulticastPkts"                   },
187         { 0, 32, 2, "EtherStatsBroadcastPkts"                   },
188         { 0, 34, 2, "EtherStatsDropEvents"                      },
189         { 0, 36, 2, "Dot3StatsFCSErrors"                        },
190         { 0, 38, 2, "Dot3StatsSymbolErrors"                     },
191         { 0, 40, 2, "Dot3InPauseFrames"                         },
192         { 0, 42, 2, "Dot3ControlInUnknownOpcodes"               },
193         { 0, 44, 4, "IfOutOctets"                               },
194         { 0, 48, 2, "Dot3StatsSingleCollisionFrames"            },
195         { 0, 50, 2, "Dot3StatMultipleCollisionFrames"           },
196         { 0, 52, 2, "Dot3sDeferredTransmissions"                },
197         { 0, 54, 2, "Dot3StatsLateCollisions"                   },
198         { 0, 56, 2, "EtherStatsCollisions"                      },
199         { 0, 58, 2, "Dot3StatsExcessiveCollisions"              },
200         { 0, 60, 2, "Dot3OutPauseFrames"                        },
201         { 0, 62, 2, "Dot1dBasePortDelayExceededDiscards"        },
202
203         /*
204          * The following counters are accessible at a different
205          * base address.
206          */
207         { 1,  0, 2, "Dot1dTpPortInDiscards"                     },
208         { 1,  2, 2, "IfOutUcastPkts"                            },
209         { 1,  4, 2, "IfOutMulticastPkts"                        },
210         { 1,  6, 2, "IfOutBroadcastPkts"                        },
211 };
212
213 #define REG_WR(_smi, _reg, _val)                                        \
214         do {                                                            \
215                 err = rtl8366_smi_write_reg(_smi, _reg, _val);          \
216                 if (err)                                                \
217                         return err;                                     \
218         } while (0)
219
220 #define REG_RMW(_smi, _reg, _mask, _val)                                \
221         do {                                                            \
222                 err = rtl8366_smi_rmwr(_smi, _reg, _mask, _val);        \
223                 if (err)                                                \
224                         return err;                                     \
225         } while (0)
226
227 static int rtl8366s_reset_chip(struct rtl8366_smi *smi)
228 {
229         int timeout = 10;
230         u32 data;
231
232         rtl8366_smi_write_reg_noack(smi, RTL8366S_RESET_CTRL_REG,
233                                     RTL8366S_CHIP_CTRL_RESET_HW);
234         do {
235                 msleep(1);
236                 if (rtl8366_smi_read_reg(smi, RTL8366S_RESET_CTRL_REG, &data))
237                         return -EIO;
238
239                 if (!(data & RTL8366S_CHIP_CTRL_RESET_HW))
240                         break;
241         } while (--timeout);
242
243         if (!timeout) {
244                 printk("Timeout waiting for the switch to reset\n");
245                 return -EIO;
246         }
247
248         return 0;
249 }
250
251 static int rtl8366s_setup(struct rtl8366_smi *smi)
252 {
253         struct rtl8366_platform_data *pdata;
254         int err;
255
256         pdata = smi->parent->platform_data;
257         if (pdata->num_initvals && pdata->initvals) {
258                 unsigned i;
259
260                 dev_info(smi->parent, "applying initvals\n");
261                 for (i = 0; i < pdata->num_initvals; i++)
262                         REG_WR(smi, pdata->initvals[i].reg,
263                                pdata->initvals[i].val);
264         }
265
266         /* set maximum packet length to 1536 bytes */
267         REG_RMW(smi, RTL8366S_SGCR, RTL8366S_SGCR_MAX_LENGTH_MASK,
268                 RTL8366S_SGCR_MAX_LENGTH_1536);
269
270         /* enable learning for all ports */
271         REG_WR(smi, RTL8366S_SSCR0, 0);
272
273         /* enable auto ageing for all ports */
274         REG_WR(smi, RTL8366S_SSCR1, 0);
275
276         /*
277          * discard VLAN tagged packets if the port is not a member of
278          * the VLAN with which the packets is associated.
279          */
280         REG_WR(smi, RTL8366S_VLAN_MEMBERINGRESS_REG, RTL8366S_PORT_ALL);
281
282         /* don't drop packets whose DA has not been learned */
283         REG_RMW(smi, RTL8366S_SSCR2, RTL8366S_SSCR2_DROP_UNKNOWN_DA, 0);
284
285         return 0;
286 }
287
288 static int rtl8366s_read_phy_reg(struct rtl8366_smi *smi,
289                                  u32 phy_no, u32 page, u32 addr, u32 *data)
290 {
291         u32 reg;
292         int ret;
293
294         if (phy_no > RTL8366S_PHY_NO_MAX)
295                 return -EINVAL;
296
297         if (page > RTL8366S_PHY_PAGE_MAX)
298                 return -EINVAL;
299
300         if (addr > RTL8366S_PHY_ADDR_MAX)
301                 return -EINVAL;
302
303         ret = rtl8366_smi_write_reg(smi, RTL8366S_PHY_ACCESS_CTRL_REG,
304                                     RTL8366S_PHY_CTRL_READ);
305         if (ret)
306                 return ret;
307
308         reg = 0x8000 | (1 << (phy_no + RTL8366S_PHY_NO_OFFSET)) |
309               ((page << RTL8366S_PHY_PAGE_OFFSET) & RTL8366S_PHY_PAGE_MASK) |
310               (addr & RTL8366S_PHY_REG_MASK);
311
312         ret = rtl8366_smi_write_reg(smi, reg, 0);
313         if (ret)
314                 return ret;
315
316         ret = rtl8366_smi_read_reg(smi, RTL8366S_PHY_ACCESS_DATA_REG, data);
317         if (ret)
318                 return ret;
319
320         return 0;
321 }
322
323 static int rtl8366s_write_phy_reg(struct rtl8366_smi *smi,
324                                   u32 phy_no, u32 page, u32 addr, u32 data)
325 {
326         u32 reg;
327         int ret;
328
329         if (phy_no > RTL8366S_PHY_NO_MAX)
330                 return -EINVAL;
331
332         if (page > RTL8366S_PHY_PAGE_MAX)
333                 return -EINVAL;
334
335         if (addr > RTL8366S_PHY_ADDR_MAX)
336                 return -EINVAL;
337
338         ret = rtl8366_smi_write_reg(smi, RTL8366S_PHY_ACCESS_CTRL_REG,
339                                     RTL8366S_PHY_CTRL_WRITE);
340         if (ret)
341                 return ret;
342
343         reg = 0x8000 | (1 << (phy_no + RTL8366S_PHY_NO_OFFSET)) |
344               ((page << RTL8366S_PHY_PAGE_OFFSET) & RTL8366S_PHY_PAGE_MASK) |
345               (addr & RTL8366S_PHY_REG_MASK);
346
347         ret = rtl8366_smi_write_reg(smi, reg, data);
348         if (ret)
349                 return ret;
350
351         return 0;
352 }
353
354 static int rtl8366_get_mib_counter(struct rtl8366_smi *smi, int counter,
355                                    int port, unsigned long long *val)
356 {
357         int i;
358         int err;
359         u32 addr, data;
360         u64 mibvalue;
361
362         if (port > RTL8366S_NUM_PORTS || counter >= RTL8366S_MIB_COUNT)
363                 return -EINVAL;
364
365         switch (rtl8366s_mib_counters[counter].base) {
366         case 0:
367                 addr = RTL8366S_MIB_COUNTER_BASE +
368                        RTL8366S_MIB_COUNTER_PORT_OFFSET * port;
369                 break;
370
371         case 1:
372                 addr = RTL8366S_MIB_COUNTER_BASE2 +
373                         RTL8366S_MIB_COUNTER_PORT_OFFSET2 * port;
374                 break;
375
376         default:
377                 return -EINVAL;
378         }
379
380         addr += rtl8366s_mib_counters[counter].offset;
381
382         /*
383          * Writing access counter address first
384          * then ASIC will prepare 64bits counter wait for being retrived
385          */
386         data = 0; /* writing data will be discard by ASIC */
387         err = rtl8366_smi_write_reg(smi, addr, data);
388         if (err)
389                 return err;
390
391         /* read MIB control register */
392         err =  rtl8366_smi_read_reg(smi, RTL8366S_MIB_CTRL_REG, &data);
393         if (err)
394                 return err;
395
396         if (data & RTL8366S_MIB_CTRL_BUSY_MASK)
397                 return -EBUSY;
398
399         if (data & RTL8366S_MIB_CTRL_RESET_MASK)
400                 return -EIO;
401
402         mibvalue = 0;
403         for (i = rtl8366s_mib_counters[counter].length; i > 0; i--) {
404                 err = rtl8366_smi_read_reg(smi, addr + (i - 1), &data);
405                 if (err)
406                         return err;
407
408                 mibvalue = (mibvalue << 16) | (data & 0xFFFF);
409         }
410
411         *val = mibvalue;
412         return 0;
413 }
414
415 static int rtl8366s_get_vlan_4k(struct rtl8366_smi *smi, u32 vid,
416                                 struct rtl8366_vlan_4k *vlan4k)
417 {
418         u32 data[2];
419         int err;
420         int i;
421
422         memset(vlan4k, '\0', sizeof(struct rtl8366_vlan_4k));
423
424         if (vid >= RTL8366S_NUM_VIDS)
425                 return -EINVAL;
426
427         /* write VID */
428         err = rtl8366_smi_write_reg(smi, RTL8366S_VLAN_TABLE_WRITE_BASE,
429                                     vid & RTL8366S_VLAN_VID_MASK);
430         if (err)
431                 return err;
432
433         /* write table access control word */
434         err = rtl8366_smi_write_reg(smi, RTL8366S_TABLE_ACCESS_CTRL_REG,
435                                     RTL8366S_TABLE_VLAN_READ_CTRL);
436         if (err)
437                 return err;
438
439         for (i = 0; i < 2; i++) {
440                 err = rtl8366_smi_read_reg(smi,
441                                            RTL8366S_VLAN_TABLE_READ_BASE + i,
442                                            &data[i]);
443                 if (err)
444                         return err;
445         }
446
447         vlan4k->vid = vid;
448         vlan4k->untag = (data[1] >> RTL8366S_VLAN_UNTAG_SHIFT) &
449                         RTL8366S_VLAN_UNTAG_MASK;
450         vlan4k->member = data[1] & RTL8366S_VLAN_MEMBER_MASK;
451         vlan4k->fid = (data[1] >> RTL8366S_VLAN_FID_SHIFT) &
452                         RTL8366S_VLAN_FID_MASK;
453
454         return 0;
455 }
456
457 static int rtl8366s_set_vlan_4k(struct rtl8366_smi *smi,
458                                 const struct rtl8366_vlan_4k *vlan4k)
459 {
460         u32 data[2];
461         int err;
462         int i;
463
464         if (vlan4k->vid >= RTL8366S_NUM_VIDS ||
465             vlan4k->member > RTL8366S_VLAN_MEMBER_MASK ||
466             vlan4k->untag > RTL8366S_VLAN_UNTAG_MASK ||
467             vlan4k->fid > RTL8366S_FIDMAX)
468                 return -EINVAL;
469
470         data[0] = vlan4k->vid & RTL8366S_VLAN_VID_MASK;
471         data[1] = (vlan4k->member & RTL8366S_VLAN_MEMBER_MASK) |
472                   ((vlan4k->untag & RTL8366S_VLAN_UNTAG_MASK) <<
473                         RTL8366S_VLAN_UNTAG_SHIFT) |
474                   ((vlan4k->fid & RTL8366S_VLAN_FID_MASK) <<
475                         RTL8366S_VLAN_FID_SHIFT);
476
477         for (i = 0; i < 2; i++) {
478                 err = rtl8366_smi_write_reg(smi,
479                                             RTL8366S_VLAN_TABLE_WRITE_BASE + i,
480                                             data[i]);
481                 if (err)
482                         return err;
483         }
484
485         /* write table access control word */
486         err = rtl8366_smi_write_reg(smi, RTL8366S_TABLE_ACCESS_CTRL_REG,
487                                     RTL8366S_TABLE_VLAN_WRITE_CTRL);
488
489         return err;
490 }
491
492 static int rtl8366s_get_vlan_mc(struct rtl8366_smi *smi, u32 index,
493                                 struct rtl8366_vlan_mc *vlanmc)
494 {
495         u32 data[2];
496         int err;
497         int i;
498
499         memset(vlanmc, '\0', sizeof(struct rtl8366_vlan_mc));
500
501         if (index >= RTL8366S_NUM_VLANS)
502                 return -EINVAL;
503
504         for (i = 0; i < 2; i++) {
505                 err = rtl8366_smi_read_reg(smi,
506                                            RTL8366S_VLAN_MC_BASE(index) + i,
507                                            &data[i]);
508                 if (err)
509                         return err;
510         }
511
512         vlanmc->vid = data[0] & RTL8366S_VLAN_VID_MASK;
513         vlanmc->priority = (data[0] >> RTL8366S_VLAN_PRIORITY_SHIFT) &
514                            RTL8366S_VLAN_PRIORITY_MASK;
515         vlanmc->untag = (data[1] >> RTL8366S_VLAN_UNTAG_SHIFT) &
516                         RTL8366S_VLAN_UNTAG_MASK;
517         vlanmc->member = data[1] & RTL8366S_VLAN_MEMBER_MASK;
518         vlanmc->fid = (data[1] >> RTL8366S_VLAN_FID_SHIFT) &
519                       RTL8366S_VLAN_FID_MASK;
520
521         return 0;
522 }
523
524 static int rtl8366s_set_vlan_mc(struct rtl8366_smi *smi, u32 index,
525                                 const struct rtl8366_vlan_mc *vlanmc)
526 {
527         u32 data[2];
528         int err;
529         int i;
530
531         if (index >= RTL8366S_NUM_VLANS ||
532             vlanmc->vid >= RTL8366S_NUM_VIDS ||
533             vlanmc->priority > RTL8366S_PRIORITYMAX ||
534             vlanmc->member > RTL8366S_VLAN_MEMBER_MASK ||
535             vlanmc->untag > RTL8366S_VLAN_UNTAG_MASK ||
536             vlanmc->fid > RTL8366S_FIDMAX)
537                 return -EINVAL;
538
539         data[0] = (vlanmc->vid & RTL8366S_VLAN_VID_MASK) |
540                   ((vlanmc->priority & RTL8366S_VLAN_PRIORITY_MASK) <<
541                         RTL8366S_VLAN_PRIORITY_SHIFT);
542         data[1] = (vlanmc->member & RTL8366S_VLAN_MEMBER_MASK) |
543                   ((vlanmc->untag & RTL8366S_VLAN_UNTAG_MASK) <<
544                         RTL8366S_VLAN_UNTAG_SHIFT) |
545                   ((vlanmc->fid & RTL8366S_VLAN_FID_MASK) <<
546                         RTL8366S_VLAN_FID_SHIFT);
547
548         for (i = 0; i < 2; i++) {
549                 err = rtl8366_smi_write_reg(smi,
550                                             RTL8366S_VLAN_MC_BASE(index) + i,
551                                             data[i]);
552                 if (err)
553                         return err;
554         }
555
556         return 0;
557 }
558
559 static int rtl8366s_get_mc_index(struct rtl8366_smi *smi, int port, int *val)
560 {
561         u32 data;
562         int err;
563
564         if (port >= RTL8366S_NUM_PORTS)
565                 return -EINVAL;
566
567         err = rtl8366_smi_read_reg(smi, RTL8366S_PORT_VLAN_CTRL_REG(port),
568                                    &data);
569         if (err)
570                 return err;
571
572         *val = (data >> RTL8366S_PORT_VLAN_CTRL_SHIFT(port)) &
573                RTL8366S_PORT_VLAN_CTRL_MASK;
574
575         return 0;
576 }
577
578 static int rtl8366s_set_mc_index(struct rtl8366_smi *smi, int port, int index)
579 {
580         if (port >= RTL8366S_NUM_PORTS || index >= RTL8366S_NUM_VLANS)
581                 return -EINVAL;
582
583         return rtl8366_smi_rmwr(smi, RTL8366S_PORT_VLAN_CTRL_REG(port),
584                                 RTL8366S_PORT_VLAN_CTRL_MASK <<
585                                         RTL8366S_PORT_VLAN_CTRL_SHIFT(port),
586                                 (index & RTL8366S_PORT_VLAN_CTRL_MASK) <<
587                                         RTL8366S_PORT_VLAN_CTRL_SHIFT(port));
588 }
589
590 static int rtl8366s_enable_vlan(struct rtl8366_smi *smi, int enable)
591 {
592         return rtl8366_smi_rmwr(smi, RTL8366S_SGCR, RTL8366S_SGCR_EN_VLAN,
593                                 (enable) ? RTL8366S_SGCR_EN_VLAN : 0);
594 }
595
596 static int rtl8366s_enable_vlan4k(struct rtl8366_smi *smi, int enable)
597 {
598         return rtl8366_smi_rmwr(smi, RTL8366S_VLAN_TB_CTRL_REG,
599                                 1, (enable) ? 1 : 0);
600 }
601
602 static int rtl8366s_is_vlan_valid(struct rtl8366_smi *smi, unsigned vlan)
603 {
604         unsigned max = RTL8366S_NUM_VLANS;
605
606         if (smi->vlan4k_enabled)
607                 max = RTL8366S_NUM_VIDS - 1;
608
609         if (vlan == 0 || vlan >= max)
610                 return 0;
611
612         return 1;
613 }
614
615 static int rtl8366s_enable_port(struct rtl8366_smi *smi, int port, int enable)
616 {
617         return rtl8366_smi_rmwr(smi, RTL8366S_PECR, (1 << port),
618                                 (enable) ? 0 : (1 << port));
619 }
620
621 static int rtl8366s_sw_reset_mibs(struct switch_dev *dev,
622                                   const struct switch_attr *attr,
623                                   struct switch_val *val)
624 {
625         struct rtl8366_smi *smi = sw_to_rtl8366_smi(dev);
626
627         return rtl8366_smi_rmwr(smi, RTL8366S_MIB_CTRL_REG, 0, (1 << 2));
628 }
629
630 static int rtl8366s_sw_get_blinkrate(struct switch_dev *dev,
631                                      const struct switch_attr *attr,
632                                      struct switch_val *val)
633 {
634         struct rtl8366_smi *smi = sw_to_rtl8366_smi(dev);
635         u32 data;
636
637         rtl8366_smi_read_reg(smi, RTL8366S_LED_BLINKRATE_REG, &data);
638
639         val->value.i = (data & (RTL8366S_LED_BLINKRATE_MASK));
640
641         return 0;
642 }
643
644 static int rtl8366s_sw_set_blinkrate(struct switch_dev *dev,
645                                     const struct switch_attr *attr,
646                                     struct switch_val *val)
647 {
648         struct rtl8366_smi *smi = sw_to_rtl8366_smi(dev);
649
650         if (val->value.i >= 6)
651                 return -EINVAL;
652
653         return rtl8366_smi_rmwr(smi, RTL8366S_LED_BLINKRATE_REG,
654                                 RTL8366S_LED_BLINKRATE_MASK,
655                                 val->value.i);
656 }
657
658 static int rtl8366s_sw_get_max_length(struct switch_dev *dev,
659                                         const struct switch_attr *attr,
660                                         struct switch_val *val)
661 {
662         struct rtl8366_smi *smi = sw_to_rtl8366_smi(dev);
663         u32 data;
664
665         rtl8366_smi_read_reg(smi, RTL8366S_SGCR, &data);
666
667         val->value.i = ((data & (RTL8366S_SGCR_MAX_LENGTH_MASK)) >> 4);
668
669         return 0;
670 }
671
672 static int rtl8366s_sw_set_max_length(struct switch_dev *dev,
673                                         const struct switch_attr *attr,
674                                         struct switch_val *val)
675 {
676         struct rtl8366_smi *smi = sw_to_rtl8366_smi(dev);
677         char length_code;
678
679         switch (val->value.i) {
680                 case 0:
681                         length_code = RTL8366S_SGCR_MAX_LENGTH_1522;
682                         break;
683                 case 1:
684                         length_code = RTL8366S_SGCR_MAX_LENGTH_1536;
685                         break;
686                 case 2:
687                         length_code = RTL8366S_SGCR_MAX_LENGTH_1552;
688                         break;
689                 case 3:
690                         length_code = RTL8366S_SGCR_MAX_LENGTH_16000;
691                         break;
692                 default:
693                         return -EINVAL;
694         }
695
696         return rtl8366_smi_rmwr(smi, RTL8366S_SGCR,
697                         RTL8366S_SGCR_MAX_LENGTH_MASK,
698                         length_code);
699 }
700
701 static int rtl8366s_sw_get_learning_enable(struct switch_dev *dev,
702                                            const struct switch_attr *attr,
703                                            struct switch_val *val)
704 {
705         struct rtl8366_smi *smi = sw_to_rtl8366_smi(dev);
706         u32 data;
707
708         rtl8366_smi_read_reg(smi,RTL8366S_SSCR0, &data);
709         val->value.i = !data;
710
711         return 0;
712 }
713
714
715 static int rtl8366s_sw_set_learning_enable(struct switch_dev *dev,
716                                            const struct switch_attr *attr,
717                                            struct switch_val *val)
718 {
719         struct rtl8366_smi *smi = sw_to_rtl8366_smi(dev);
720         u32 portmask = 0;
721         int err = 0;
722
723         if (!val->value.i)
724                 portmask = RTL8366S_PORT_ALL;
725
726         /* set learning for all ports */
727         REG_WR(smi, RTL8366S_SSCR0, portmask);
728
729         /* set auto ageing for all ports */
730         REG_WR(smi, RTL8366S_SSCR1, portmask);
731
732         return 0;
733 }
734
735 static int rtl8366s_sw_get_port_link(struct switch_dev *dev,
736                                      int port,
737                                      struct switch_port_link *link)
738 {
739         struct rtl8366_smi *smi = sw_to_rtl8366_smi(dev);
740         u32 data = 0;
741         u32 speed;
742
743         if (port >= RTL8366S_NUM_PORTS)
744                 return -EINVAL;
745
746         rtl8366_smi_read_reg(smi, RTL8366S_PORT_LINK_STATUS_BASE + (port / 2),
747                              &data);
748
749         if (port % 2)
750                 data = data >> 8;
751
752         link->link = !!(data & RTL8366S_PORT_STATUS_LINK_MASK);
753         if (!link->link)
754                 return 0;
755
756         link->duplex = !!(data & RTL8366S_PORT_STATUS_DUPLEX_MASK);
757         link->rx_flow = !!(data & RTL8366S_PORT_STATUS_RXPAUSE_MASK);
758         link->tx_flow = !!(data & RTL8366S_PORT_STATUS_TXPAUSE_MASK);
759         link->aneg = !!(data & RTL8366S_PORT_STATUS_AN_MASK);
760
761         speed = (data & RTL8366S_PORT_STATUS_SPEED_MASK);
762         switch (speed) {
763         case 0:
764                 link->speed = SWITCH_PORT_SPEED_10;
765                 break;
766         case 1:
767                 link->speed = SWITCH_PORT_SPEED_100;
768                 break;
769         case 2:
770                 link->speed = SWITCH_PORT_SPEED_1000;
771                 break;
772         default:
773                 link->speed = SWITCH_PORT_SPEED_UNKNOWN;
774                 break;
775         }
776
777         return 0;
778 }
779
780 static int rtl8366s_sw_set_port_led(struct switch_dev *dev,
781                                     const struct switch_attr *attr,
782                                     struct switch_val *val)
783 {
784         struct rtl8366_smi *smi = sw_to_rtl8366_smi(dev);
785         u32 data;
786         u32 mask;
787         u32 reg;
788
789         if (val->port_vlan >= RTL8366S_NUM_PORTS ||
790             (1 << val->port_vlan) == RTL8366S_PORT_UNKNOWN)
791                 return -EINVAL;
792
793         if (val->port_vlan == RTL8366S_PORT_NUM_CPU) {
794                 reg = RTL8366S_LED_BLINKRATE_REG;
795                 mask = 0xF << 4;
796                 data = val->value.i << 4;
797         } else {
798                 reg = RTL8366S_LED_CTRL_REG;
799                 mask = 0xF << (val->port_vlan * 4),
800                 data = val->value.i << (val->port_vlan * 4);
801         }
802
803         return rtl8366_smi_rmwr(smi, reg, mask, data);
804 }
805
806 static int rtl8366s_sw_get_port_led(struct switch_dev *dev,
807                                     const struct switch_attr *attr,
808                                     struct switch_val *val)
809 {
810         struct rtl8366_smi *smi = sw_to_rtl8366_smi(dev);
811         u32 data = 0;
812
813         if (val->port_vlan >= RTL8366S_NUM_LEDGROUPS)
814                 return -EINVAL;
815
816         rtl8366_smi_read_reg(smi, RTL8366S_LED_CTRL_REG, &data);
817         val->value.i = (data >> (val->port_vlan * 4)) & 0x000F;
818
819         return 0;
820 }
821
822 static int rtl8366s_sw_reset_port_mibs(struct switch_dev *dev,
823                                        const struct switch_attr *attr,
824                                        struct switch_val *val)
825 {
826         struct rtl8366_smi *smi = sw_to_rtl8366_smi(dev);
827
828         if (val->port_vlan >= RTL8366S_NUM_PORTS)
829                 return -EINVAL;
830
831
832         return rtl8366_smi_rmwr(smi, RTL8366S_MIB_CTRL_REG,
833                                 0, (1 << (val->port_vlan + 3)));
834 }
835
836 static struct switch_attr rtl8366s_globals[] = {
837         {
838                 .type = SWITCH_TYPE_INT,
839                 .name = "enable_learning",
840                 .description = "Enable learning, enable aging",
841                 .set = rtl8366s_sw_set_learning_enable,
842                 .get = rtl8366s_sw_get_learning_enable,
843                 .max = 1,
844         }, {
845                 .type = SWITCH_TYPE_INT,
846                 .name = "enable_vlan",
847                 .description = "Enable VLAN mode",
848                 .set = rtl8366_sw_set_vlan_enable,
849                 .get = rtl8366_sw_get_vlan_enable,
850                 .max = 1,
851                 .ofs = 1
852         }, {
853                 .type = SWITCH_TYPE_INT,
854                 .name = "enable_vlan4k",
855                 .description = "Enable VLAN 4K mode",
856                 .set = rtl8366_sw_set_vlan_enable,
857                 .get = rtl8366_sw_get_vlan_enable,
858                 .max = 1,
859                 .ofs = 2
860         }, {
861                 .type = SWITCH_TYPE_NOVAL,
862                 .name = "reset_mibs",
863                 .description = "Reset all MIB counters",
864                 .set = rtl8366s_sw_reset_mibs,
865         }, {
866                 .type = SWITCH_TYPE_INT,
867                 .name = "blinkrate",
868                 .description = "Get/Set LED blinking rate (0 = 43ms, 1 = 84ms,"
869                 " 2 = 120ms, 3 = 170ms, 4 = 340ms, 5 = 670ms)",
870                 .set = rtl8366s_sw_set_blinkrate,
871                 .get = rtl8366s_sw_get_blinkrate,
872                 .max = 5
873         }, {
874                 .type = SWITCH_TYPE_INT,
875                 .name = "max_length",
876                 .description = "Get/Set the maximum length of valid packets"
877                 " (0 = 1522, 1 = 1536, 2 = 1552, 3 = 16000 (9216?))",
878                 .set = rtl8366s_sw_set_max_length,
879                 .get = rtl8366s_sw_get_max_length,
880                 .max = 3,
881         },
882 };
883
884 static struct switch_attr rtl8366s_port[] = {
885         {
886                 .type = SWITCH_TYPE_NOVAL,
887                 .name = "reset_mib",
888                 .description = "Reset single port MIB counters",
889                 .set = rtl8366s_sw_reset_port_mibs,
890         }, {
891                 .type = SWITCH_TYPE_STRING,
892                 .name = "mib",
893                 .description = "Get MIB counters for port",
894                 .max = 33,
895                 .set = NULL,
896                 .get = rtl8366_sw_get_port_mib,
897         }, {
898                 .type = SWITCH_TYPE_INT,
899                 .name = "led",
900                 .description = "Get/Set port group (0 - 3) led mode (0 - 15)",
901                 .max = 15,
902                 .set = rtl8366s_sw_set_port_led,
903                 .get = rtl8366s_sw_get_port_led,
904         },
905 };
906
907 static struct switch_attr rtl8366s_vlan[] = {
908         {
909                 .type = SWITCH_TYPE_STRING,
910                 .name = "info",
911                 .description = "Get vlan information",
912                 .max = 1,
913                 .set = NULL,
914                 .get = rtl8366_sw_get_vlan_info,
915         }, {
916                 .type = SWITCH_TYPE_INT,
917                 .name = "fid",
918                 .description = "Get/Set vlan FID",
919                 .max = RTL8366S_FIDMAX,
920                 .set = rtl8366_sw_set_vlan_fid,
921                 .get = rtl8366_sw_get_vlan_fid,
922         },
923 };
924
925 static const struct switch_dev_ops rtl8366_ops = {
926         .attr_global = {
927                 .attr = rtl8366s_globals,
928                 .n_attr = ARRAY_SIZE(rtl8366s_globals),
929         },
930         .attr_port = {
931                 .attr = rtl8366s_port,
932                 .n_attr = ARRAY_SIZE(rtl8366s_port),
933         },
934         .attr_vlan = {
935                 .attr = rtl8366s_vlan,
936                 .n_attr = ARRAY_SIZE(rtl8366s_vlan),
937         },
938
939         .get_vlan_ports = rtl8366_sw_get_vlan_ports,
940         .set_vlan_ports = rtl8366_sw_set_vlan_ports,
941         .get_port_pvid = rtl8366_sw_get_port_pvid,
942         .set_port_pvid = rtl8366_sw_set_port_pvid,
943         .reset_switch = rtl8366_sw_reset_switch,
944         .get_port_link = rtl8366s_sw_get_port_link,
945 };
946
947 static int rtl8366s_switch_init(struct rtl8366_smi *smi)
948 {
949         struct switch_dev *dev = &smi->sw_dev;
950         int err;
951
952         dev->name = "RTL8366S";
953         dev->cpu_port = RTL8366S_PORT_NUM_CPU;
954         dev->ports = RTL8366S_NUM_PORTS;
955         dev->vlans = RTL8366S_NUM_VIDS;
956         dev->ops = &rtl8366_ops;
957         dev->alias = dev_name(smi->parent);
958
959         err = register_switch(dev, NULL);
960         if (err)
961                 dev_err(smi->parent, "switch registration failed\n");
962
963         return err;
964 }
965
966 static void rtl8366s_switch_cleanup(struct rtl8366_smi *smi)
967 {
968         unregister_switch(&smi->sw_dev);
969 }
970
971 static int rtl8366s_mii_read(struct mii_bus *bus, int addr, int reg)
972 {
973         struct rtl8366_smi *smi = bus->priv;
974         u32 val = 0;
975         int err;
976
977         err = rtl8366s_read_phy_reg(smi, addr, 0, reg, &val);
978         if (err)
979                 return 0xffff;
980
981         return val;
982 }
983
984 static int rtl8366s_mii_write(struct mii_bus *bus, int addr, int reg, u16 val)
985 {
986         struct rtl8366_smi *smi = bus->priv;
987         u32 t;
988         int err;
989
990         err = rtl8366s_write_phy_reg(smi, addr, 0, reg, val);
991         /* flush write */
992         (void) rtl8366s_read_phy_reg(smi, addr, 0, reg, &t);
993
994         return err;
995 }
996
997 static int rtl8366s_detect(struct rtl8366_smi *smi)
998 {
999         u32 chip_id = 0;
1000         u32 chip_ver = 0;
1001         int ret;
1002
1003         ret = rtl8366_smi_read_reg(smi, RTL8366S_CHIP_ID_REG, &chip_id);
1004         if (ret) {
1005                 dev_err(smi->parent, "unable to read chip id\n");
1006                 return ret;
1007         }
1008
1009         switch (chip_id) {
1010         case RTL8366S_CHIP_ID_8366:
1011                 break;
1012         default:
1013                 dev_err(smi->parent, "unknown chip id (%04x)\n", chip_id);
1014                 return -ENODEV;
1015         }
1016
1017         ret = rtl8366_smi_read_reg(smi, RTL8366S_CHIP_VERSION_CTRL_REG,
1018                                    &chip_ver);
1019         if (ret) {
1020                 dev_err(smi->parent, "unable to read chip version\n");
1021                 return ret;
1022         }
1023
1024         dev_info(smi->parent, "RTL%04x ver. %u chip found\n",
1025                  chip_id, chip_ver & RTL8366S_CHIP_VERSION_MASK);
1026
1027         return 0;
1028 }
1029
1030 static struct rtl8366_smi_ops rtl8366s_smi_ops = {
1031         .detect         = rtl8366s_detect,
1032         .reset_chip     = rtl8366s_reset_chip,
1033         .setup          = rtl8366s_setup,
1034
1035         .mii_read       = rtl8366s_mii_read,
1036         .mii_write      = rtl8366s_mii_write,
1037
1038         .get_vlan_mc    = rtl8366s_get_vlan_mc,
1039         .set_vlan_mc    = rtl8366s_set_vlan_mc,
1040         .get_vlan_4k    = rtl8366s_get_vlan_4k,
1041         .set_vlan_4k    = rtl8366s_set_vlan_4k,
1042         .get_mc_index   = rtl8366s_get_mc_index,
1043         .set_mc_index   = rtl8366s_set_mc_index,
1044         .get_mib_counter = rtl8366_get_mib_counter,
1045         .is_vlan_valid  = rtl8366s_is_vlan_valid,
1046         .enable_vlan    = rtl8366s_enable_vlan,
1047         .enable_vlan4k  = rtl8366s_enable_vlan4k,
1048         .enable_port    = rtl8366s_enable_port,
1049 };
1050
1051 static int __devinit rtl8366s_probe(struct platform_device *pdev)
1052 {
1053         static int rtl8366_smi_version_printed;
1054         struct rtl8366_platform_data *pdata;
1055         struct rtl8366_smi *smi;
1056         int err;
1057
1058         if (!rtl8366_smi_version_printed++)
1059                 printk(KERN_NOTICE RTL8366S_DRIVER_DESC
1060                        " version " RTL8366S_DRIVER_VER"\n");
1061
1062         smi = rtl8366_smi_probe(pdev);
1063         if (!smi)
1064                 return -ENODEV;
1065
1066         smi->clk_delay = 10;
1067         smi->cmd_read = 0xa9;
1068         smi->cmd_write = 0xa8;
1069         smi->ops = &rtl8366s_smi_ops;
1070         smi->cpu_port = RTL8366S_PORT_NUM_CPU;
1071         smi->num_ports = RTL8366S_NUM_PORTS;
1072         smi->num_vlan_mc = RTL8366S_NUM_VLANS;
1073         smi->mib_counters = rtl8366s_mib_counters;
1074         smi->num_mib_counters = ARRAY_SIZE(rtl8366s_mib_counters);
1075
1076         err = rtl8366_smi_init(smi);
1077         if (err)
1078                 goto err_free_smi;
1079
1080         platform_set_drvdata(pdev, smi);
1081
1082         err = rtl8366s_switch_init(smi);
1083         if (err)
1084                 goto err_clear_drvdata;
1085
1086         return 0;
1087
1088  err_clear_drvdata:
1089         platform_set_drvdata(pdev, NULL);
1090         rtl8366_smi_cleanup(smi);
1091  err_free_smi:
1092         kfree(smi);
1093  err_out:
1094         return err;
1095 }
1096
1097 static int __devexit rtl8366s_remove(struct platform_device *pdev)
1098 {
1099         struct rtl8366_smi *smi = platform_get_drvdata(pdev);
1100
1101         if (smi) {
1102                 rtl8366s_switch_cleanup(smi);
1103                 platform_set_drvdata(pdev, NULL);
1104                 rtl8366_smi_cleanup(smi);
1105                 kfree(smi);
1106         }
1107
1108         return 0;
1109 }
1110
1111 #ifdef CONFIG_OF
1112 static const struct of_device_id rtl8366s_match[] = {
1113         { .compatible = "rtl8366s" },
1114         {},
1115 };
1116 MODULE_DEVICE_TABLE(of, rtl8366s_match);
1117 #endif
1118
1119 static struct platform_driver rtl8366s_driver = {
1120         .driver = {
1121                 .name           = RTL8366S_DRIVER_NAME,
1122                 .owner          = THIS_MODULE,
1123                 .of_match_table = of_match_ptr(rtl8366s_match),
1124         },
1125         .probe          = rtl8366s_probe,
1126         .remove         = __devexit_p(rtl8366s_remove),
1127 };
1128
1129 static int __init rtl8366s_module_init(void)
1130 {
1131         return platform_driver_register(&rtl8366s_driver);
1132 }
1133 module_init(rtl8366s_module_init);
1134
1135 static void __exit rtl8366s_module_exit(void)
1136 {
1137         platform_driver_unregister(&rtl8366s_driver);
1138 }
1139 module_exit(rtl8366s_module_exit);
1140
1141 MODULE_DESCRIPTION(RTL8366S_DRIVER_DESC);
1142 MODULE_VERSION(RTL8366S_DRIVER_VER);
1143 MODULE_AUTHOR("Gabor Juhos <juhosg@openwrt.org>");
1144 MODULE_AUTHOR("Antti Seppälä <a.seppala@gmail.com>");
1145 MODULE_LICENSE("GPL v2");
1146 MODULE_ALIAS("platform:" RTL8366S_DRIVER_NAME);