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 * According to docs FUSB200 has 15 endpoints, but according to the source 10.
5 # 0x00 ZM_MAIN_CTRL_OFFSET
7 * BIT6 - 1 = HighSpeed is set (read only?)
11 * BIT2 - 1 = enable global Int
13 * BIT0 - 1 = set Remote Wake Up;
15 # 0x01 ZM_DEVICE_ADDRESS_OFFSET
16 * BIT7 - usb config? (r/w)
26 * BIT0 - 1 ?? set on usb 2.0 init
28 # 0x08 ZM_PHY_TEST_SELECT_OFFSET
38 According to FUSB200 doc:
39 DM(D-) DP(D+) Description
44 0: Control PHY to turn off 1.5K Ohm pull-up resistor
45 1: Control PHY to turn on 1.5K Ohm pull-up resistor
49 # 0x0A ZM_VDR_SPECIFIC_MODE_OFFSET
51 # 0x0B ZM_CX_CONFIG_STATUS_OFFSET
54 * BIT5 - indicator that frame was transmitted.
56 * BIT3 - set to drom the fram?
57 * BIT2 - set CX_STL to stall Endpoint0 & will also clear FIFO0
59 * BIT0 - set CX_DONE to indicate the transmistion of control frame
61 # 0x0C ZM_EP0_DATA_OFFSET
62 * Write 32bit data to fifo
64 # 0x11 ZM_INTR_MASK_BYTE_0_OFFSET
65 # 0x12 ZM_INTR_MASK_BYTE_1_OFFSET
68 # 0x13 ZM_INTR_MASK_BYTE_2_OFFSET
71 # 0x14 ZM_INTR_MASK_BYTE_3_OFFSET
74 # 0x15 ZM_INTR_MASK_BYTE_4_OFFSET
76 #define mUSB_REG_OUT_INT_ENABLE() USB_BYTE_REG_WRITE(ZM_INTR_MASK_BYTE_4_OFFSET, \
77 USB_BYTE_REG_READ(ZM_INTR_MASK_BYTE_4_OFFSET)&0x3f)
78 #define mUSB_REG_OUT_INT_DISABLE() USB_BYTE_REG_WRITE(ZM_INTR_MASK_BYTE_4_OFFSET, \
79 USB_BYTE_REG_READ(ZM_INTR_MASK_BYTE_4_OFFSET)&0xc0)
81 # 0x16 ZM_INTR_MASK_BYTE_5_OFFSET
84 # 0x17 ZM_INTR_MASK_BYTE_6_OFFSET
87 #define mUSB_STATUS_IN_INT_ENABLE() USB_BYTE_REG_WRITE(ZM_INTR_MASK_BYTE_6_OFFSET, \
88 USB_BYTE_REG_READ(ZM_INTR_MASK_BYTE_6_OFFSET)&0xbf)
89 #define mUSB_STATUS_IN_INT_DISABLE() USB_BYTE_REG_WRITE(ZM_INTR_MASK_BYTE_6_OFFSET, \
90 USB_BYTE_REG_READ(ZM_INTR_MASK_BYTE_6_OFFSET)|0xc0)
92 # 0x18 ZM_INTR_MASK_BYTE_7_OFFSET
94 # 0x20 ZM_INTR_GROUP_OFFSET
100 * BIT2 - group INTR 2
101 * BIT1 - group INTR 1
102 * BIT0 - group INTR 0
103 These bits indicate if fallowing groups got some interrupt.
105 # 0x21 ZM_INTR_SOURCE_0_OFFSET
106 * BIT7 - abort interrupt? should be cleared first?
109 * BIT4 - ep0 CMD_FAIL
111 * BIT2 - USB EP0 OUT/rx interrupt
112 * BIT1 - USB EP0 IN/tx interrupt
115 # 0x22 ZM_INTR_SOURCE_1_OFFSET
116 # 0x23 ZM_INTR_SOURCE_2_OFFSET
117 # 0x24 ZM_INTR_SOURCE_3_OFFSET
118 # 0x25 ZM_INTR_SOURCE_4_OFFSET
119 * BIT6 - vUsb_Reg_Out()?
121 # 0x26 ZM_INTR_SOURCE_5_OFFSET
122 these endpoints are handled by DMA
124 # 0x27 ZM_INTR_SOURCE_6_OFFSET
125 * BIT6 - vUsb_Status_In()?
127 # 0x28 ZM_INTR_SOURCE_7_OFFSET
134 * BIT1 - USB reset interrupt.
137 # 0x3F ZM_EP_IN_MAX_SIZE_HIGH_OFFSET
139 # 0x3E ZM_EP_IN_MAX_SIZE_LOW_OFFSET
141 # 0x5E ZM_EP_OUT_MAX_SIZE_LOW_OFFSET
143 # 0x5F ZM_EP_OUT_MAX_SIZE_HIGH_OFFSET
145 # 0xAE ZM_EP3_BYTE_COUNT_HIGH_OFFSET
147 comments: after sending data from target to host, set BIT3
149 # 0xAF ZM_EP4_BYTE_COUNT_HIGH_OFFSET
150 BIT4 - 1 - reset fifo; 0 - disable reset?
151 comments: probably compatible with ZM_EP3_BYTE_COUNT_HIGH_OFFSET
153 # 0xBE ZM_EP3_BYTE_COUNT_LOW_OFFSET
155 # 0xBF ZM_EP4_BYTE_COUNT_LOW_OFFSET
156 size of data in fifo buffer
158 # 0xF8 ZM_EP3_DATA_OFFSET
159 # 0xFC ZM_EP4_DATA_OFFSET
161 # 0x108 ZM_SOC_USB_MODE_CTRL_OFFSET
162 BIT10 - 1 - enable MP (EP6) downstream stream mode
163 BIT9 - 1 - enable MP (EP6) downstream DMA mode
164 BIT8 - 1 - enable HP (EP5) downstream DMA mode
165 BIT7 - 1 - enable HP (EP5) downstream stream mode
166 BIT6 - 1 - enable LP downstream stream mode
167 BIT5 - define the host dma buffer size - 4096(00) 8192 (01) 16384(10) 32768(11) bytes
169 BIT3 - 0 - enable upstream stream mode: 1 - enable upstream packed mode;
170 BIT2 - 0 - Set into 64 byte mode (full speed) 1 - Set into 512 byte mode (usb highspeed)
171 BIT1 - 0 - disable upstream dma mode; 1 - enable upstream dma mode
172 BIT0 - 0 - disable LP down stream dma mode; 1 - eanble LP down stream dma mode
174 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
175 LP - lo priotiry; MP - middle priority; HP - High priority;
178 # 0x110 ZM_SOC_USB_MAX_AGGREGATE_OFFSET
179 set stream mode packet buffer critirea
180 0x0 = disable stream mode or 1 packet. So 0x9 is 10 packets?
181 # 0x114 ZM_SOC_USB_TIME_CTRL_OFFSET
182 set stream mode timeout critirea. the unit is 32 USB (30Mhz) clock cycles.