Loongson 3A2000, User Manual, Page: 73 / 126

4/29/2020 Godson 3A2000 / 3B2000 Processor User Manual
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31 ht_uncache1_en 1 0x0 R / W HT bus uncache address window 3, enable signal
30
ht_uncache1_
trans_en
1 0x0 R / W HT bus uncache address window 3, mapping enable signal
29: 0
ht_uncache1_
trans [53:24]
16 0x0 R / W HT bus uncache address window 3, the translated address
[53:24]
Offset: 0x174
Reset value: 0x00000000
Name: HT bus Uncache address window 3 base address (internal access)
Table 10-61 HT Bus Uncache Address Window 3 Base Address (Internal Access)
Bit field Bit field name Bit width reset value Visit description
31:16
ht_uncache1_
base [39:24]
16 0x0 R / W HT bus uncache address window 3, address base address
15: 0
ht_uncache1_
mask [39:24]
16 0x0 R / W HT bus uncache address window 3, address masked [39:24]
10.5.14
P2P address window configuration register
For the address window hit formula, see section 10.5.7 .
The address in this window is the address received on the HT bus. The read and write commands at the address of this window are directly used as P2P
The command is forwarded back to the bus, which has the highest priority relative to the normal receive window and Uncache window.
Offset: 0x158
Reset value: 0x00000000
Name: HT bus P2P address window 0 enable (external access)
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Godson 3A2000 / 3B2000 Processor User Manual Part 1
Table 10-62 HT bus P2P address window 0 enable (external access) register definition
Bit field Bit field name Bit width reset value Visit description
31 ht_p2p_image0_en 1 0x0 R / W HT bus P2P address window 0, enable signal
30 ht_p2p_image0_
trans_en
1 0x0 R / W HT bus P2P address window 0, mapping enable signal
29: 0 ht_p2p_image0_
trans [53:24]
16 0x0 R / W HT bus P2P address window 0, translated address [53:24]
Offset: 0x15c
Reset value: 0x00000000
Name: HT bus P2P address window 0 base address (external access)
Table 10-63 HT bus P2P address window 0 base address (external access) register definition
Bit field Bit field name Bit width reset value Visit description
31:16 ht_p2p_image0_
base [39:24]
16 0x0 R / W HT bus P2P address window 0, address base address [39:24]
15: 0 ht_p2p_image0_
mask [39:24]
16 0x0 R / W HT bus P2P address window 0, address masked [39:24]
Offset: 0x160
Reset value: 0x00000000
Name: HT bus P2P address window 1 enable (external access)