1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef _FIREWIRE_OHCI_H
3#define _FIREWIRE_OHCI_H
4
5/* OHCI register map */
6
7#define OHCI1394_Version 0x000
8#define OHCI1394_GUID_ROM 0x004
9#define OHCI1394_ATRetries 0x008
10#define OHCI1394_CSRData 0x00C
11#define OHCI1394_CSRCompareData 0x010
12#define OHCI1394_CSRControl 0x014
13#define OHCI1394_ConfigROMhdr 0x018
14#define OHCI1394_BusID 0x01C
15#define OHCI1394_BusOptions 0x020
16#define OHCI1394_GUIDHi 0x024
17#define OHCI1394_GUIDLo 0x028
18#define OHCI1394_ConfigROMmap 0x034
19#define OHCI1394_PostedWriteAddressLo 0x038
20#define OHCI1394_PostedWriteAddressHi 0x03C
21#define OHCI1394_VendorID 0x040
22#define OHCI1394_HCControlSet 0x050
23#define OHCI1394_HCControlClear 0x054
24#define OHCI1394_HCControl_BIBimageValid 0x80000000
25#define OHCI1394_HCControl_noByteSwapData 0x40000000
26#define OHCI1394_HCControl_programPhyEnable 0x00800000
27#define OHCI1394_HCControl_aPhyEnhanceEnable 0x00400000
28#define OHCI1394_HCControl_LPS 0x00080000
29#define OHCI1394_HCControl_postedWriteEnable 0x00040000
30#define OHCI1394_HCControl_linkEnable 0x00020000
31#define OHCI1394_HCControl_softReset 0x00010000
32#define OHCI1394_SelfIDBuffer 0x064
33#define OHCI1394_SelfIDCount 0x068
34#define OHCI1394_IRMultiChanMaskHiSet 0x070
35#define OHCI1394_IRMultiChanMaskHiClear 0x074
36#define OHCI1394_IRMultiChanMaskLoSet 0x078
37#define OHCI1394_IRMultiChanMaskLoClear 0x07C
38#define OHCI1394_IntEventSet 0x080
39#define OHCI1394_IntEventClear 0x084
40#define OHCI1394_IntMaskSet 0x088
41#define OHCI1394_IntMaskClear 0x08C
42#define OHCI1394_IsoXmitIntEventSet 0x090
43#define OHCI1394_IsoXmitIntEventClear 0x094
44#define OHCI1394_IsoXmitIntMaskSet 0x098
45#define OHCI1394_IsoXmitIntMaskClear 0x09C
46#define OHCI1394_IsoRecvIntEventSet 0x0A0
47#define OHCI1394_IsoRecvIntEventClear 0x0A4
48#define OHCI1394_IsoRecvIntMaskSet 0x0A8
49#define OHCI1394_IsoRecvIntMaskClear 0x0AC
50#define OHCI1394_InitialBandwidthAvailable 0x0B0
51#define OHCI1394_InitialChannelsAvailableHi 0x0B4
52#define OHCI1394_InitialChannelsAvailableLo 0x0B8
53#define OHCI1394_FairnessControl 0x0DC
54#define OHCI1394_LinkControlSet 0x0E0
55#define OHCI1394_LinkControlClear 0x0E4
56#define OHCI1394_LinkControl_rcvSelfID (1 << 9)
57#define OHCI1394_LinkControl_rcvPhyPkt (1 << 10)
58#define OHCI1394_LinkControl_cycleTimerEnable (1 << 20)
59#define OHCI1394_LinkControl_cycleMaster (1 << 21)
60#define OHCI1394_LinkControl_cycleSource (1 << 22)
61#define OHCI1394_NodeID 0x0E8
62#define OHCI1394_NodeID_idValid 0x80000000
63#define OHCI1394_NodeID_root 0x40000000
64#define OHCI1394_NodeID_nodeNumber 0x0000003f
65#define OHCI1394_NodeID_busNumber 0x0000ffc0
66#define OHCI1394_PhyControl 0x0EC
67#define OHCI1394_PhyControl_Read(addr) (((addr) << 8) | 0x00008000)
68#define OHCI1394_PhyControl_ReadDone 0x80000000
69#define OHCI1394_PhyControl_ReadData(r) (((r) & 0x00ff0000) >> 16)
70#define OHCI1394_PhyControl_Write(addr, data) (((addr) << 8) | (data) | 0x00004000)
71#define OHCI1394_PhyControl_WritePending 0x00004000
72#define OHCI1394_IsochronousCycleTimer 0x0F0
73#define OHCI1394_AsReqFilterHiSet 0x100
74#define OHCI1394_AsReqFilterHiClear 0x104
75#define OHCI1394_AsReqFilterLoSet 0x108
76#define OHCI1394_AsReqFilterLoClear 0x10C
77#define OHCI1394_PhyReqFilterHiSet 0x110
78#define OHCI1394_PhyReqFilterHiClear 0x114
79#define OHCI1394_PhyReqFilterLoSet 0x118
80#define OHCI1394_PhyReqFilterLoClear 0x11C
81#define OHCI1394_PhyUpperBound 0x120
82
83#define OHCI1394_AsReqTrContextBase 0x180
84#define OHCI1394_AsReqTrContextControlSet 0x180
85#define OHCI1394_AsReqTrContextControlClear 0x184
86#define OHCI1394_AsReqTrCommandPtr 0x18C
87
88#define OHCI1394_AsRspTrContextBase 0x1A0
89#define OHCI1394_AsRspTrContextControlSet 0x1A0
90#define OHCI1394_AsRspTrContextControlClear 0x1A4
91#define OHCI1394_AsRspTrCommandPtr 0x1AC
92
93#define OHCI1394_AsReqRcvContextBase 0x1C0
94#define OHCI1394_AsReqRcvContextControlSet 0x1C0
95#define OHCI1394_AsReqRcvContextControlClear 0x1C4
96#define OHCI1394_AsReqRcvCommandPtr 0x1CC
97
98#define OHCI1394_AsRspRcvContextBase 0x1E0
99#define OHCI1394_AsRspRcvContextControlSet 0x1E0
100#define OHCI1394_AsRspRcvContextControlClear 0x1E4
101#define OHCI1394_AsRspRcvCommandPtr 0x1EC
102
103/* Isochronous transmit registers */
104#define OHCI1394_IsoXmitContextBase(n) (0x200 + 16 * (n))
105#define OHCI1394_IsoXmitContextControlSet(n) (0x200 + 16 * (n))
106#define OHCI1394_IsoXmitContextControlClear(n) (0x204 + 16 * (n))
107#define OHCI1394_IsoXmitCommandPtr(n) (0x20C + 16 * (n))
108
109/* Isochronous receive registers */
110#define OHCI1394_IsoRcvContextBase(n) (0x400 + 32 * (n))
111#define OHCI1394_IsoRcvContextControlSet(n) (0x400 + 32 * (n))
112#define OHCI1394_IsoRcvContextControlClear(n) (0x404 + 32 * (n))
113#define OHCI1394_IsoRcvCommandPtr(n) (0x40C + 32 * (n))
114#define OHCI1394_IsoRcvContextMatch(n) (0x410 + 32 * (n))
115
116/* Interrupts Mask/Events */
117#define OHCI1394_reqTxComplete 0x00000001
118#define OHCI1394_respTxComplete 0x00000002
119#define OHCI1394_ARRQ 0x00000004
120#define OHCI1394_ARRS 0x00000008
121#define OHCI1394_RQPkt 0x00000010
122#define OHCI1394_RSPkt 0x00000020
123#define OHCI1394_isochTx 0x00000040
124#define OHCI1394_isochRx 0x00000080
125#define OHCI1394_postedWriteErr 0x00000100
126#define OHCI1394_lockRespErr 0x00000200
127#define OHCI1394_selfIDComplete 0x00010000
128#define OHCI1394_busReset 0x00020000
129#define OHCI1394_regAccessFail 0x00040000
130#define OHCI1394_phy 0x00080000
131#define OHCI1394_cycleSynch 0x00100000
132#define OHCI1394_cycle64Seconds 0x00200000
133#define OHCI1394_cycleLost 0x00400000
134#define OHCI1394_cycleInconsistent 0x00800000
135#define OHCI1394_unrecoverableError 0x01000000
136#define OHCI1394_cycleTooLong 0x02000000
137#define OHCI1394_phyRegRcvd 0x04000000
138#define OHCI1394_masterIntEnable 0x80000000
139
140#define OHCI1394_evt_no_status 0x0
141#define OHCI1394_evt_long_packet 0x2
142#define OHCI1394_evt_missing_ack 0x3
143#define OHCI1394_evt_underrun 0x4
144#define OHCI1394_evt_overrun 0x5
145#define OHCI1394_evt_descriptor_read 0x6
146#define OHCI1394_evt_data_read 0x7
147#define OHCI1394_evt_data_write 0x8
148#define OHCI1394_evt_bus_reset 0x9
149#define OHCI1394_evt_timeout 0xa
150#define OHCI1394_evt_tcode_err 0xb
151#define OHCI1394_evt_reserved_b 0xc
152#define OHCI1394_evt_reserved_c 0xd
153#define OHCI1394_evt_unknown 0xe
154#define OHCI1394_evt_flushed 0xf
155
156
157// Asynchronous Transmit DMA.
158//
159// The content of first two quadlets of data for AT DMA is different from the header for IEEE 1394
160// asynchronous packet.
161
162#define OHCI1394_AT_DATA_Q0_srcBusID_MASK 0x00800000
163#define OHCI1394_AT_DATA_Q0_srcBusID_SHIFT 23
164#define OHCI1394_AT_DATA_Q0_spd_MASK 0x00070000
165#define OHCI1394_AT_DATA_Q0_spd_SHIFT 16
166#define OHCI1394_AT_DATA_Q0_tLabel_MASK 0x0000fc00
167#define OHCI1394_AT_DATA_Q0_tLabel_SHIFT 10
168#define OHCI1394_AT_DATA_Q0_rt_MASK 0x00000300
169#define OHCI1394_AT_DATA_Q0_rt_SHIFT 8
170#define OHCI1394_AT_DATA_Q0_tCode_MASK 0x000000f0
171#define OHCI1394_AT_DATA_Q0_tCode_SHIFT 4
172#define OHCI1394_AT_DATA_Q1_destinationId_MASK 0xffff0000
173#define OHCI1394_AT_DATA_Q1_destinationId_SHIFT 16
174#define OHCI1394_AT_DATA_Q1_destinationOffsetHigh_MASK 0x0000ffff
175#define OHCI1394_AT_DATA_Q1_destinationOffsetHigh_SHIFT 0
176#define OHCI1394_AT_DATA_Q1_rCode_MASK 0x0000f000
177#define OHCI1394_AT_DATA_Q1_rCode_SHIFT 12
178
179static inline bool ohci1394_at_data_get_src_bus_id(const __le32 *data)
180{
181 return !!((data[0] & OHCI1394_AT_DATA_Q0_srcBusID_MASK) >> OHCI1394_AT_DATA_Q0_srcBusID_SHIFT);
182}
183
184static inline void ohci1394_at_data_set_src_bus_id(__le32 *data, bool src_bus_id)
185{
186 data[0] &= cpu_to_le32(~OHCI1394_AT_DATA_Q0_srcBusID_MASK);
187 data[0] |= cpu_to_le32((src_bus_id << OHCI1394_AT_DATA_Q0_srcBusID_SHIFT) & OHCI1394_AT_DATA_Q0_srcBusID_MASK);
188}
189
190static inline unsigned int ohci1394_at_data_get_speed(const __le32 *data)
191{
192 return (le32_to_cpu(data[0]) & OHCI1394_AT_DATA_Q0_spd_MASK) >> OHCI1394_AT_DATA_Q0_spd_SHIFT;
193}
194
195static inline void ohci1394_at_data_set_speed(__le32 *data, unsigned int scode)
196{
197 data[0] &= cpu_to_le32(~OHCI1394_AT_DATA_Q0_spd_MASK);
198 data[0] |= cpu_to_le32((scode << OHCI1394_AT_DATA_Q0_spd_SHIFT) & OHCI1394_AT_DATA_Q0_spd_MASK);
199}
200
201static inline unsigned int ohci1394_at_data_get_tlabel(const __le32 *data)
202{
203 return (le32_to_cpu(data[0]) & OHCI1394_AT_DATA_Q0_tLabel_MASK) >> OHCI1394_AT_DATA_Q0_tLabel_SHIFT;
204}
205
206static inline void ohci1394_at_data_set_tlabel(__le32 *data, unsigned int tlabel)
207{
208 data[0] &= cpu_to_le32(~OHCI1394_AT_DATA_Q0_tLabel_MASK);
209 data[0] |= cpu_to_le32((tlabel << OHCI1394_AT_DATA_Q0_tLabel_SHIFT) & OHCI1394_AT_DATA_Q0_tLabel_MASK);
210}
211
212static inline unsigned int ohci1394_at_data_get_retry(const __le32 *data)
213{
214 return (le32_to_cpu(data[0]) & OHCI1394_AT_DATA_Q0_rt_MASK) >> OHCI1394_AT_DATA_Q0_rt_SHIFT;
215}
216
217static inline void ohci1394_at_data_set_retry(__le32 *data, unsigned int retry)
218{
219 data[0] &= cpu_to_le32(~OHCI1394_AT_DATA_Q0_rt_MASK);
220 data[0] |= cpu_to_le32((retry << OHCI1394_AT_DATA_Q0_rt_SHIFT) & OHCI1394_AT_DATA_Q0_rt_MASK);
221}
222
223static inline unsigned int ohci1394_at_data_get_tcode(const __le32 *data)
224{
225 return (le32_to_cpu(data[0]) & OHCI1394_AT_DATA_Q0_tCode_MASK) >> OHCI1394_AT_DATA_Q0_tCode_SHIFT;
226}
227
228static inline void ohci1394_at_data_set_tcode(__le32 *data, unsigned int tcode)
229{
230 data[0] &= cpu_to_le32(~OHCI1394_AT_DATA_Q0_tCode_MASK);
231 data[0] |= cpu_to_le32((tcode << OHCI1394_AT_DATA_Q0_tCode_SHIFT) & OHCI1394_AT_DATA_Q0_tCode_MASK);
232}
233
234static inline unsigned int ohci1394_at_data_get_destination_id(const __le32 *data)
235{
236 return (le32_to_cpu(data[1]) & OHCI1394_AT_DATA_Q1_destinationId_MASK) >> OHCI1394_AT_DATA_Q1_destinationId_SHIFT;
237}
238
239static inline void ohci1394_at_data_set_destination_id(__le32 *data, unsigned int destination_id)
240{
241 data[1] &= cpu_to_le32(~OHCI1394_AT_DATA_Q1_destinationId_MASK);
242 data[1] |= cpu_to_le32((destination_id << OHCI1394_AT_DATA_Q1_destinationId_SHIFT) & OHCI1394_AT_DATA_Q1_destinationId_MASK);
243}
244
245static inline u64 ohci1394_at_data_get_destination_offset(const __le32 *data)
246{
247 u64 hi = (u64)((le32_to_cpu(data[1]) & OHCI1394_AT_DATA_Q1_destinationOffsetHigh_MASK) >> OHCI1394_AT_DATA_Q1_destinationOffsetHigh_SHIFT);
248 u64 lo = (u64)le32_to_cpu(data[2]);
249 return (hi << 32) | lo;
250}
251
252static inline void ohci1394_at_data_set_destination_offset(__le32 *data, u64 offset)
253{
254 u32 hi = (u32)(offset >> 32);
255 u32 lo = (u32)(offset & 0x00000000ffffffff);
256 data[1] &= cpu_to_le32(~OHCI1394_AT_DATA_Q1_destinationOffsetHigh_MASK);
257 data[1] |= cpu_to_le32((hi << OHCI1394_AT_DATA_Q1_destinationOffsetHigh_SHIFT) & OHCI1394_AT_DATA_Q1_destinationOffsetHigh_MASK);
258 data[2] = cpu_to_le32(lo);
259}
260
261static inline unsigned int ohci1394_at_data_get_rcode(const __le32 *data)
262{
263 return (le32_to_cpu(data[1]) & OHCI1394_AT_DATA_Q1_rCode_MASK) >> OHCI1394_AT_DATA_Q1_rCode_SHIFT;
264}
265
266static inline void ohci1394_at_data_set_rcode(__le32 *data, unsigned int rcode)
267{
268 data[1] &= cpu_to_le32(~OHCI1394_AT_DATA_Q1_rCode_MASK);
269 data[1] |= cpu_to_le32((rcode << OHCI1394_AT_DATA_Q1_rCode_SHIFT) & OHCI1394_AT_DATA_Q1_rCode_MASK);
270}
271
272// Isochronous Transmit DMA.
273//
274// The content of first two quadlets of data for IT DMA is different from the header for IEEE 1394
275// isochronous packet.
276
277#define OHCI1394_IT_DATA_Q0_spd_MASK 0x00070000
278#define OHCI1394_IT_DATA_Q0_spd_SHIFT 16
279#define OHCI1394_IT_DATA_Q0_tag_MASK 0x0000c000
280#define OHCI1394_IT_DATA_Q0_tag_SHIFT 14
281#define OHCI1394_IT_DATA_Q0_chanNum_MASK 0x00003f00
282#define OHCI1394_IT_DATA_Q0_chanNum_SHIFT 8
283#define OHCI1394_IT_DATA_Q0_tcode_MASK 0x000000f0
284#define OHCI1394_IT_DATA_Q0_tcode_SHIFT 4
285#define OHCI1394_IT_DATA_Q0_sy_MASK 0x0000000f
286#define OHCI1394_IT_DATA_Q0_sy_SHIFT 0
287#define OHCI1394_IT_DATA_Q1_dataLength_MASK 0xffff0000
288#define OHCI1394_IT_DATA_Q1_dataLength_SHIFT 16
289
290static inline unsigned int ohci1394_it_data_get_speed(const __le32 *data)
291{
292 return (le32_to_cpu(data[0]) & OHCI1394_IT_DATA_Q0_spd_MASK) >> OHCI1394_IT_DATA_Q0_spd_SHIFT;
293}
294
295static inline void ohci1394_it_data_set_speed(__le32 *data, unsigned int scode)
296{
297 data[0] &= cpu_to_le32(~OHCI1394_IT_DATA_Q0_spd_MASK);
298 data[0] |= cpu_to_le32((scode << OHCI1394_IT_DATA_Q0_spd_SHIFT) & OHCI1394_IT_DATA_Q0_spd_MASK);
299}
300
301static inline unsigned int ohci1394_it_data_get_tag(const __le32 *data)
302{
303 return (le32_to_cpu(data[0]) & OHCI1394_IT_DATA_Q0_tag_MASK) >> OHCI1394_IT_DATA_Q0_tag_SHIFT;
304}
305
306static inline void ohci1394_it_data_set_tag(__le32 *data, unsigned int tag)
307{
308 data[0] &= cpu_to_le32(~OHCI1394_IT_DATA_Q0_tag_MASK);
309 data[0] |= cpu_to_le32((tag << OHCI1394_IT_DATA_Q0_tag_SHIFT) & OHCI1394_IT_DATA_Q0_tag_MASK);
310}
311
312static inline unsigned int ohci1394_it_data_get_channel(const __le32 *data)
313{
314 return (le32_to_cpu(data[0]) & OHCI1394_IT_DATA_Q0_chanNum_MASK) >> OHCI1394_IT_DATA_Q0_chanNum_SHIFT;
315}
316
317static inline void ohci1394_it_data_set_channel(__le32 *data, unsigned int channel)
318{
319 data[0] &= cpu_to_le32(~OHCI1394_IT_DATA_Q0_chanNum_MASK);
320 data[0] |= cpu_to_le32((channel << OHCI1394_IT_DATA_Q0_chanNum_SHIFT) & OHCI1394_IT_DATA_Q0_chanNum_MASK);
321}
322
323static inline unsigned int ohci1394_it_data_get_tcode(const __le32 *data)
324{
325 return (le32_to_cpu(data[0]) & OHCI1394_IT_DATA_Q0_tcode_MASK) >> OHCI1394_IT_DATA_Q0_tcode_SHIFT;
326}
327
328static inline void ohci1394_it_data_set_tcode(__le32 *data, unsigned int tcode)
329{
330 data[0] &= cpu_to_le32(~OHCI1394_IT_DATA_Q0_tcode_MASK);
331 data[0] |= cpu_to_le32((tcode << OHCI1394_IT_DATA_Q0_tcode_SHIFT) & OHCI1394_IT_DATA_Q0_tcode_MASK);
332}
333
334static inline unsigned int ohci1394_it_data_get_sync(const __le32 *data)
335{
336 return (le32_to_cpu(data[0]) & OHCI1394_IT_DATA_Q0_sy_MASK) >> OHCI1394_IT_DATA_Q0_sy_SHIFT;
337}
338
339static inline void ohci1394_it_data_set_sync(__le32 *data, unsigned int sync)
340{
341 data[0] &= cpu_to_le32(~OHCI1394_IT_DATA_Q0_sy_MASK);
342 data[0] |= cpu_to_le32((sync << OHCI1394_IT_DATA_Q0_sy_SHIFT) & OHCI1394_IT_DATA_Q0_sy_MASK);
343}
344
345static inline unsigned int ohci1394_it_data_get_data_length(const __le32 *data)
346{
347 return (le32_to_cpu(data[1]) & OHCI1394_IT_DATA_Q1_dataLength_MASK) >> OHCI1394_IT_DATA_Q1_dataLength_SHIFT;
348}
349
350static inline void ohci1394_it_data_set_data_length(__le32 *data, unsigned int data_length)
351{
352 data[1] &= cpu_to_le32(~OHCI1394_IT_DATA_Q1_dataLength_MASK);
353 data[1] |= cpu_to_le32((data_length << OHCI1394_IT_DATA_Q1_dataLength_SHIFT) & OHCI1394_IT_DATA_Q1_dataLength_MASK);
354}
355
356// Self-ID DMA.
357
358#define OHCI1394_SelfIDCount_selfIDError_MASK 0x80000000
359#define OHCI1394_SelfIDCount_selfIDError_SHIFT 31
360#define OHCI1394_SelfIDCount_selfIDGeneration_MASK 0x00ff0000
361#define OHCI1394_SelfIDCount_selfIDGeneration_SHIFT 16
362#define OHCI1394_SelfIDCount_selfIDSize_MASK 0x000007fc
363#define OHCI1394_SelfIDCount_selfIDSize_SHIFT 2
364
365static inline bool ohci1394_self_id_count_is_error(u32 value)
366{
367 return !!((value & OHCI1394_SelfIDCount_selfIDError_MASK) >> OHCI1394_SelfIDCount_selfIDError_SHIFT);
368}
369
370static inline u8 ohci1394_self_id_count_get_generation(u32 value)
371{
372 return (value & OHCI1394_SelfIDCount_selfIDGeneration_MASK) >> OHCI1394_SelfIDCount_selfIDGeneration_SHIFT;
373}
374
375// In 1394 OHCI specification, the maximum size of self ID stream is 504 quadlets
376// (= 63 devices * 4 self ID packets * 2 quadlets). The selfIDSize field accommodates it and its
377// additional first quadlet, since the field is 9 bits (0x1ff = 511).
378static inline u32 ohci1394_self_id_count_get_size(u32 value)
379{
380 return (value & OHCI1394_SelfIDCount_selfIDSize_MASK) >> OHCI1394_SelfIDCount_selfIDSize_SHIFT;
381}
382
383#define OHCI1394_SELF_ID_RECEIVE_Q0_GENERATION_MASK 0x00ff0000
384#define OHCI1394_SELF_ID_RECEIVE_Q0_GENERATION_SHIFT 16
385#define OHCI1394_SELF_ID_RECEIVE_Q0_TIMESTAMP_MASK 0x0000ffff
386#define OHCI1394_SELF_ID_RECEIVE_Q0_TIMESTAMP_SHIFT 0
387
388static inline u8 ohci1394_self_id_receive_q0_get_generation(u32 quadlet0)
389{
390 return (quadlet0 & OHCI1394_SELF_ID_RECEIVE_Q0_GENERATION_MASK) >> OHCI1394_SELF_ID_RECEIVE_Q0_GENERATION_SHIFT;
391}
392
393static inline u16 ohci1394_self_id_receive_q0_get_timestamp(u32 quadlet0)
394{
395 return (quadlet0 & OHCI1394_SELF_ID_RECEIVE_Q0_TIMESTAMP_MASK) >> OHCI1394_SELF_ID_RECEIVE_Q0_TIMESTAMP_SHIFT;
396}
397
398#endif /* _FIREWIRE_OHCI_H */
399