1 Assumptions made on source code:
2 * looks like USB block is [FUSB200](http://www.faraday-tech.com/techDocument/FUSB200_ProductBrief_v1_2.pdf).
3 * We have 15 Enddpoints and 15 FIFO buffers.
4 * **FIFO0 - FIFO13, 512 Byte each? FIFO14 - FIFO15 - 64 Byte each?**
6 # 0x00 ZM_MAIN_CTRL_OFFSET
8 * BIT6 - 1 = HighSpeed is set (read only?)
12 * BIT2 - 1 = enable global Int
14 * BIT0 - 1 = set Remote Wake Up;
16 # 0x01 ZM_DEVICE_ADDRESS_OFFSET
17 * BIT7 - usb config? (r/w)
27 * BIT0 - 1 ?? set on usb 2.0 init
29 # 0x08 ZM_PHY_TEST_SELECT_OFFSET
33 * BIT4 - TEST_PKY - Test packed.
39 According to FUSB200 doc:
40 DM(D-) DP(D+) Description
45 0: Control PHY to turn off 1.5K Ohm pull-up resistor
46 1: Control PHY to turn on 1.5K Ohm pull-up resistor
47 If TEST_PKY is set, the test packet must be filled into FIFO by DMA first.
50 # 0x0A ZM_VDR_SPECIFIC_MODE_OFFSET
52 # 0x0B ZM_CX_CONFIG_STATUS_OFFSET
55 * BIT5 - indicator that frame was transmitted.
57 * BIT3 - set to drom the fram?
58 * BIT2 - set CX_STL to stall Endpoint0 & will also clear FIFO0
60 * BIT0 - set CX_DONE to indicate the transmistion of control frame
62 # 0x0C ZM_EP0_DATA_OFFSET
63 * Write 32bit data to fifo
65 # 0x11 ZM_INTR_MASK_BYTE_0_OFFSET
66 Theoretically INTR_MASK_BYTE should control INTR_SOURCE. Is it correct?
68 # 0x12 ZM_INTR_MASK_BYTE_1_OFFSET
71 # 0x13 ZM_INTR_MASK_BYTE_2_OFFSET
74 # 0x14 ZM_INTR_MASK_BYTE_3_OFFSET
77 # 0x15 ZM_INTR_MASK_BYTE_4_OFFSET
79 #define mUSB_REG_OUT_INT_ENABLE() USB_BYTE_REG_WRITE(ZM_INTR_MASK_BYTE_4_OFFSET, \
80 USB_BYTE_REG_READ(ZM_INTR_MASK_BYTE_4_OFFSET)&0x3f)
81 #define mUSB_REG_OUT_INT_DISABLE() USB_BYTE_REG_WRITE(ZM_INTR_MASK_BYTE_4_OFFSET, \
82 USB_BYTE_REG_READ(ZM_INTR_MASK_BYTE_4_OFFSET)&0xc0)
84 # 0x16 ZM_INTR_MASK_BYTE_5_OFFSET
87 # 0x17 ZM_INTR_MASK_BYTE_6_OFFSET
90 #define mUSB_STATUS_IN_INT_ENABLE() USB_BYTE_REG_WRITE(ZM_INTR_MASK_BYTE_6_OFFSET, \
91 USB_BYTE_REG_READ(ZM_INTR_MASK_BYTE_6_OFFSET)&0xbf)
92 #define mUSB_STATUS_IN_INT_DISABLE() USB_BYTE_REG_WRITE(ZM_INTR_MASK_BYTE_6_OFFSET, \
93 USB_BYTE_REG_READ(ZM_INTR_MASK_BYTE_6_OFFSET)|0xc0)
95 # 0x18 ZM_INTR_MASK_BYTE_7_OFFSET
97 # 0x20 ZM_INTR_GROUP_OFFSET
100 * BIT5 - group INTR 5
101 * BIT4 - group INTR 4
102 * BIT3 - group INTR 3
103 * BIT2 - group INTR 2
104 * BIT1 - group INTR 1
105 * BIT0 - group INTR 0
106 These bits indicate if fallowing groups got some interrupt.
108 # 0x21 ZM_INTR_SOURCE_0_OFFSET
109 * BIT7 - abort interrupt? should be cleared first?
112 * BIT4 - ep0 CMD_FAIL
114 * BIT2 - USB EP0 OUT/rx interrupt
115 * BIT1 - USB EP0 IN/tx interrupt
118 # 0x22 ZM_INTR_SOURCE_1_OFFSET
119 # 0x23 ZM_INTR_SOURCE_2_OFFSET
120 # 0x24 ZM_INTR_SOURCE_3_OFFSET
121 # 0x25 ZM_INTR_SOURCE_4_OFFSET
122 * BIT7 - End of data.
123 * BIT6 - vUsb_Reg_Out(). Pending data in fifo for EP4. We need to read it out.
124 Comments: we can read only 64bytes per time. If pending data is less then 64bytes or it is end of packet, then BIT6 and BIT7 will be set. If not, then only BIT6 is set.
126 # 0x26 ZM_INTR_SOURCE_5_OFFSET
127 these endpoints are handled by DMA
129 # 0x27 ZM_INTR_SOURCE_6_OFFSET
130 * BIT6 - vUsb_Status_In()?
132 # 0x28 ZM_INTR_SOURCE_7_OFFSET
139 * BIT1 - USB reset interrupt.
143 code use: ZM_FUSB_BASE+0x30+(EPn-1)
144 (0x0F | FIFOn << 4) = OUT
147 for FIFOn see mUsbFIFOMap registers.
149 Current configuration:
151 * 0x30 0x0f <- EP1 = OUT + Start FIFO0
152 * 0x31 0xf2 <- EP2 = IN + Start FIFO2
153 * 0x32 0xfe <- EP3 = IN + Start FIFO14
154 * 0x33 0xff <- EP4 = OUT + Start FIFO15
176 # 0x39 mUsbEPMap EP10
177 # 0x3a mUsbEPMap EP11
178 # 0x3b mUsbEPMap EP12
179 # 0x3c mUsbEPMap EP13
180 # 0x3d mUsbEPMap EP14
181 # 0x3e mUsbEPMap EP15
183 # 0x3E ZM_EP_IN_MAX_SIZE_LOW_OFFSET EP0
184 * BIT0 - BIT7; low size regs. Max size 0x7ff (ZM_EP_IN_MAX_SIZE_LOW_OFFSET + ZM_EP_IN_MAX_SIZE_HIGH_OFFSET)
186 # 0x3F ZM_EP_IN_MAX_SIZE_HIGH_OFFSET EP0
190 * BIT4 - mUsbEPinRsTgSet
191 * BIT3 - mUsbEPinStallSet
192 * BIT0 - BIT2; High size regs
193 These offset + 2 Byte step for each endpoint.
194 For example EP0 = +0x00; EP1 = +0x02; or offset+(EPn << 1). In these address space will fit 15 endpoints.
197 # 0x40 ZM_EP_IN_MAX_SIZE_LOW_OFFSET EP1
198 # 0x42 ZM_EP_IN_MAX_SIZE_LOW_OFFSET EP2
199 # 0x44 ZM_EP_IN_MAX_SIZE_LOW_OFFSET EP3
200 # 0x46 ZM_EP_IN_MAX_SIZE_LOW_OFFSET EP4
201 # 0x48 ZM_EP_IN_MAX_SIZE_LOW_OFFSET EP5
202 # 0x4A ZM_EP_IN_MAX_SIZE_LOW_OFFSET EP6
203 # 0x4C ZM_EP_IN_MAX_SIZE_LOW_OFFSET EP7
204 # 0x4E ZM_EP_IN_MAX_SIZE_LOW_OFFSET EP8
205 # 0x50 ZM_EP_IN_MAX_SIZE_LOW_OFFSET EP9
206 # 0x52 ZM_EP_IN_MAX_SIZE_LOW_OFFSET EP10
207 # 0x54 ZM_EP_IN_MAX_SIZE_LOW_OFFSET EP11
208 # 0x56 ZM_EP_IN_MAX_SIZE_LOW_OFFSET EP12
209 # 0x58 ZM_EP_IN_MAX_SIZE_LOW_OFFSET EP13
210 # 0x5A ZM_EP_IN_MAX_SIZE_LOW_OFFSET EP14
211 # 0x5C ZM_EP_IN_MAX_SIZE_LOW_OFFSET EP15
213 # 0x5E ZM_EP_OUT_MAX_SIZE_LOW_OFFSET EP0
214 * BIT0 - BIT7; low size regs. Max size 0x7ff (ZM_EP_OUT_MAX_SIZE_LOW_OFFSET + ZM_EP_OUT_MAX_SIZE_HIGH_OFFSET)
216 # 0x5F ZM_EP_OUT_MAX_SIZE_HIGH_OFFSET EP0
220 * BIT4 - mUsbEPoutRsTgSet
221 * BIT3 - mUsbEPoutStallSet
222 * BIT0 - BIT2; High size regs
224 These offset + 2 Byte step for each endpoint.
225 For example EP0 = +0x00; EP1 = +0x02; or offset+(EPn << 1). In these address space will fit 15 endpoints.
227 # 0x60 ZM_EP_OUT_MAX_SIZE_LOW_OFFSET EP1
228 # 0x62 ZM_EP_OUT_MAX_SIZE_LOW_OFFSET EP2
229 # 0x64 ZM_EP_OUT_MAX_SIZE_LOW_OFFSET EP3
230 # 0x66 ZM_EP_OUT_MAX_SIZE_LOW_OFFSET EP4
231 # 0x68 ZM_EP_OUT_MAX_SIZE_LOW_OFFSET EP5
232 # 0x6A ZM_EP_OUT_MAX_SIZE_LOW_OFFSET EP6
233 # 0x6C ZM_EP_OUT_MAX_SIZE_LOW_OFFSET EP7
234 # 0x6E ZM_EP_OUT_MAX_SIZE_LOW_OFFSET EP8
235 # 0x70 ZM_EP_OUT_MAX_SIZE_LOW_OFFSET EP9
236 # 0x72 ZM_EP_OUT_MAX_SIZE_LOW_OFFSET EP10
237 # 0x74 ZM_EP_OUT_MAX_SIZE_LOW_OFFSET EP11
238 # 0x76 ZM_EP_OUT_MAX_SIZE_LOW_OFFSET EP12
239 # 0x78 ZM_EP_OUT_MAX_SIZE_LOW_OFFSET EP13
240 # 0x7A ZM_EP_OUT_MAX_SIZE_LOW_OFFSET EP14
241 # 0x7C ZM_EP_OUT_MAX_SIZE_LOW_OFFSET EP15
243 # 0x80 mUsbFIFOMap FIFO0
247 * BIT4 - Direction: 0 - OUT; 1 - IN.
248 * BIT0 - BIT3: assigned EP number.
251 * 0x80 0x01 - EP1 OUT
252 * 0x81 0x01 - EP1 OUT
268 # 0x81 mUsbFIFOMap FIFO1
269 # 0x82 mUsbFIFOMap FIFO2
270 # 0x83 mUsbFIFOMap FIFO3
271 # 0x84 mUsbFIFOMap FIFO4
272 # 0x85 mUsbFIFOMap FIFO5
273 # 0x86 mUsbFIFOMap FIFO6
274 # 0x87 mUsbFIFOMap FIFO7
275 # 0x88 mUsbFIFOMap FIFO8
276 # 0x89 mUsbFIFOMap FIFO9
277 # 0x8a mUsbFIFOMap FIFO10
278 # 0x8b mUsbFIFOMap FIFO11
279 # 0x8c mUsbFIFOMap FIFO12
280 # 0x8d mUsbFIFOMap FIFO13
281 # 0x8e mUsbFIFOMap FIFO14
282 # 0x8f mUsbFIFOMap FIFO15
284 # 0x90 mUsbFIFOConfig FIFO0
285 * BIT7 - If EPn use more then one FIFO, then this bit should be on the first
288 * BIT4 - Block size: 0 - 64/512; 1 - 128/1024. It depends on initial FIFO size.
289 * BIT2 - BIT3; number of FIFO blocks or better to say extra blocks? 0 - no more blocks; 1 - one block; 2 - two blocks.
290 * BIT0 - BIT1; EP type: 0x1 - Iso; 0x2 - Bulk, 0x3 - Intr;
292 * 0x90 0x86 <- FIFO0: Bulk | + one block (0x91) | size 512
309 # 0x91 mUsbFIFOConfig FIFO1
310 # 0x92 mUsbFIFOConfig FIFO2
311 # 0x93 mUsbFIFOConfig FIFO3
312 # 0x94 mUsbFIFOConfig FIFO4
313 # 0x95 mUsbFIFOConfig FIFO5
314 # 0x96 mUsbFIFOConfig FIFO6
315 # 0x97 mUsbFIFOConfig FIFO7
316 # 0x98 mUsbFIFOConfig FIFO8
317 # 0x99 mUsbFIFOConfig FIFO9
318 # 0x9a mUsbFIFOConfig FIFO10
319 # 0x9b mUsbFIFOConfig FIFO11
320 # 0x9c mUsbFIFOConfig FIFO12
321 # 0x9d mUsbFIFOConfig FIFO13
322 # 0x9e mUsbFIFOConfig FIFO14
323 # 0x9f mUsbFIFOConfig FIFO15
325 # 0xAE ZM_EP3_BYTE_COUNT_HIGH_OFFSET
327 comments: after sending data from target to host, set BIT3
329 # 0xAF ZM_EP4_BYTE_COUNT_HIGH_OFFSET
330 BIT4 - 1 - reset fifo; 0 - disable reset?
331 comments: probably compatible with ZM_EP3_BYTE_COUNT_HIGH_OFFSET.
332 **These name reg do not fit to pattern!!!** Compare with 0x3e, 0x3f and 0x5e, 0x5f.
333 If we have 0x3e, 0x3f and 0x5e, 0x5f, why do we need this register?
335 # 0xBE ZM_EP3_BYTE_COUNT_LOW_OFFSET
336 size of data in fifo buffer? never used?
338 # 0xBF ZM_EP4_BYTE_COUNT_LOW_OFFSET
339 size of data in fifo buffer. Maximum size of EP4 should be 64 Bytes. If reported value is bigger, then buffer is defiantly corrupt.
341 # 0xc0 FIFO0 DATA OFFSET?
342 # 0xc4 FIFO1 DATA OFFSET?
343 # 0xc8 FIFO2 DATA OFFSET?
344 # 0xcc FIFO3 DATA OFFSET?
345 # 0xd0 FIFO4 DATA OFFSET?
346 # 0xd4 FIFO5 DATA OFFSET?
347 # 0xd8 FIFO6 DATA OFFSET?
348 # 0xdc FIFO7 DATA OFFSET?
349 # 0xe0 FIFO8 DATA OFFSET?
350 # 0xe4 FIFO9 DATA OFFSET?
351 # 0xe8 FIFO10 DATA OFFSET?
352 # 0xec FIFO11 DATA OFFSET?
353 # 0xf0 FIFO12 DATA OFFSET?
354 # 0xf4 FIFO13 DATA OFFSET?
355 # 0xf8 FIFO14 DATA OFFSET?
356 # 0xfc FIFO15 DATA OFFSET?
358 # 0xF8 ZM_EP3_DATA_OFFSET
359 32bit data. Probably FIFO14 offset.. not EP
361 # 0xFC ZM_EP4_DATA_OFFSET
362 32bit data. Probably FIFO15 offset.. not EP
364 # 0x100 ZM_CBUS_FIFO_SIZE_REG
365 0x1 - 1 Byte, 0x3 - 2 Byte, 0x7 - 3 Byte; 0xf - 4 Byte.
367 **we miss 7 bytes here**
369 # 0x108 ZM_SOC_USB_MODE_CTRL_OFFSET
370 BIT10 - 1 - enable MP (EP6) downstream stream mode
371 BIT9 - 1 - enable MP (EP6) downstream DMA mode
372 BIT8 - 1 - enable HP (EP5) downstream DMA mode
373 BIT7 - 1 - enable HP (EP5) downstream stream mode
374 BIT6 - 1 - enable LP downstream stream mode
375 BIT5 - define the host dma buffer size - 4096(00) 8192 (01) 16384(10) 32768(11) bytes
377 BIT3 - 0 - enable upstream stream mode: 1 - enable upstream packed mode;
378 BIT2 - 0 - Set into 64 byte mode (full speed) 1 - Set into 512 byte mode (usb highspeed)
379 BIT1 - 0 - disable upstream dma mode; 1 - enable upstream dma mode
380 BIT0 - 0 - disable LP down stream dma mode; 1 - eanble LP down stream dma mode
382 ryan: 04/01: bit0 could disable lpdn dma, which is good at debugging while async_fifo have problem, we could disable this and check the fifo_rcv_size to see if we have correct at fifo or not
383 LP - lo priotiry; MP - middle priority; HP - High priority;
386 # 0x110 ZM_SOC_USB_MAX_AGGREGATE_OFFSET
387 set stream mode packet buffer critirea
388 0x0 = disable stream mode or 1 packet. So 0x9 is 10 packets?
389 # 0x114 ZM_SOC_USB_TIME_CTRL_OFFSET
390 set stream mode timeout critirea. the unit is 32 USB (30Mhz) clock cycles.
392 # 0x1f0 ZM_CBUS_CTRL_REG