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ARM11 Interrupts: Difference between revisions

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Clarify PDC interrupt use
 
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Line 12: Line 12:
!  Description
!  Description
|-
|-
| 0-0x3
| 0
|  
|  
| MPCore software-interrupt. Not configured.
| MPCore software-interrupt. Used by Kernel11 to sync cores in crt0.
|-
| 0x1-0x3
|
| MPCore software-interrupt. Used by Boot11 and Kernel11 to kickstart Core1/2/3, and by Kernel11 to sync cores in crt0.
|-
|-
| 0x4
| 0x4
| Kernel
| Kernel
| MPCore software-interrupt. Used to manage the performance counter.
| MPCore software-interrupt. Used to manage the performance counter. Also used by Kernel11 during crt0 to sync up.
|-
|-
| 0x5
| 0x5
Line 69: Line 73:
!  Listener
!  Listener
!  Description
!  Description
|-
| 0x24
| ?
| SPI bus 2 interrupt status update
|-
|-
| 0x28
| 0x28
Line 80: Line 88:
| 0x2A
| 0x2A
| gsp, TwlBg
| gsp, TwlBg
| PDC0 (VBlank0)
| PDC0 (Top screen VBlank0, HBlank0)
|-
|-
| 0x2B
| 0x2B
| gsp, TwlBg
| gsp, TwlBg
| PDC1 (VBlank1)
| PDC1 (Bottom screen VBlank1, HBlank1)
|-
|-
| 0x2C
| 0x2C
Line 92: Line 100:
| 0x2D
| 0x2D
| gsp, TwlBg
| gsp, TwlBg
| P3D?
| P3D
|-
|-
| 0x30
| 0x30-0x38
| Kernel
| Kernel
| ?
| Old CDMA Event 0..8 (9 separate IRQ lines)
|-
|-
| 0x39
| 0x39
| Kernel
| Kernel
| DMA
| Old CDMA Faulting (eg. CCR=0, or event>15)
|-
|-
| 0x3A
| 0x3A
| Kernel
| Kernel
| DMA
| New CDMA Event 0..31 (shared IRQ line)
|-
|-
| 0x3B
| 0x3B
| Kernel
| Kernel
| DMA
| New CDMA Faulting (eg. CCR=0)
|-
|-
| 0x40
| 0x40
Line 116: Line 124:
| 0x41
| 0x41
| nwm
| nwm
| ?
| WIFI SDIO Controller IRQ pin @ 0x10122000
|-
|-
| 0x42
| 0x42
| nwm_dev?
| nwm_dev?
| WIFI SDIO Controller @ 0x10100000
| Debug WIFI SDIO Controller @ 0x10100000 ?
|-
| 0x43
| nwm_dev?
| Debug WIFI SDIO Controller @ 0x10100000 ?
|-
| 0x44
| ?
| NTRCARD (maybe?)
|-
|-
| 0x45
| 0x45
| mvd (New3DS)
| mvd (New3DS)
| ?
| L2B_0 (First RGB-to-RGBA Converter)
|-
|-
| 0x46
| 0x46
| mvd (New3DS)
| mvd (New3DS)
| ?
| L2B_1 (Second RGB-to-RGBA Converter)
|-
|-
| 0x48
| 0x48
| camera
| camera
| ?
| Camera Bus 0 (DSi cameras)
|-
|-
| 0x49
| 0x49
| camera
| camera
| ?
| Camera Bus 1 (left-eye)
|-
|-
| 0x4A
| 0x4A
| dsp
| dsp
| ?
| General interrupt from DSP, including semaphore and command/reply registers status change
|-
|-
| 0x4B
| 0x4B
Line 148: Line 164:
| 0x4C
| 0x4C
| TwlBg
| TwlBg
| ?
| LGYFB_0 Legacy GBA/NDS Video
|-
|-
| 0x4D
| 0x4D
| TwlBg
| TwlBg
| ?
| LGYFB_1 Legacy GBA/NDS Video
|-
|-
| 0x4E
| 0x4E
| mvd (New3DS)
| mvd (New3DS)
| ?
| Y2R2 End Event
|-
|-
| 0x4F
| 0x4F
| mvd (New3DS)
| mvd (New3DS)
| ?
| MVD general interrupt?
|-
|-
| 0x50
| 0x50
| pxi, TwlBg
| pxi, TwlBg
| Sync
| Sync (bit 29 from Arm9's PXI_SYNC)
|-
|-
| 0x51
| 0x51
| pxi, TwlBg
| pxi, TwlBg
| ?
| Sync 2 (bit 30 from Arm9's PXI_SYNC)
|-
|-
| 0x52
| 0x52
Line 180: Line 196:
| 0x54
| 0x54
| i2c, TwlBg
| i2c, TwlBg
| ?
| I2C Bus0 work done
|-
|-
| 0x55
| 0x55
| i2c, TwlBg
| i2c, TwlBg
| ?
| I2C Bus1 work done
|-
|-
| 0x56
| 0x56
| spi, TwlBg
| spi, TwlBg
| ?
| SPI bus 3 interrupt status update
|-
|-
| 0x57
| 0x57
| spi, TwlBg
| spi, TwlBg
| ?
| SPI bus 1 interrupt status update
|-
|-
| 0x58
| 0x58
| Kernel
| Kernel
| PDN
| PDN (wake event or SoC mode changed)
|-
|-
| 0x59
| 0x59
| TwlBg
| TwlBg
| ?
| PDN Legacy Sleep
|-
|-
| 0x5A
| 0x5A
| mic
| mic
| ?
| General microphone interrupt (?)
|-
| 0x5B
| -
| [[HID_Registers#HID_PAD_CNT|HID_PAD_CNT]]
|-
|-
| 0x5C
| 0x5C
| i2c, TwlBg
| i2c, TwlBg
| ?
| I2C Bus2 work done
|-
| 0x5F
| mp
| DS WiFi registers
|-
|-
| 0x60
| 0x60
| gpio, TwlBg
| gpio, TwlBg
| Shell opened
| Shell opened (GPIO1_2 falling edge)
|-
|-
| 0x62
| 0x62
| gpio, TwlBg
| gpio, TwlBg
| Shell closed
| Shell closed (GPIO1_2 rising edge)
|-
|-
| 0x63
| 0x63
| gpio, TwlBg
| gpio, TwlBg
| Touchscreen
| Touch Screen pressed (GPIO1_1 falling edge)
|-
|-
| 0x64
| 0x64
| gpio, TwlBg
| gpio, TwlBg
| Headphone jack plugged in/out
| Headphones inserted (GPIO2_0)
|-
|-
| 0x66
| 0x66
| gpio, TwlBg
| gpio, TwlBg
| ?
| TWL depop circuit (GPIO2_1)
|-
|-
| 0x68
| 0x68
| gpio, TwlBg
| gpio, TwlBg
| IR
| C-stick interrupt (GPIO3_0)
|-
|-
| 0x69
| 0x69
| gpio, TwlBg
| gpio, TwlBg
| ?
| IrDA interrupt (active-low) (GPIO3_1)
|-
|-
| 0x6A
| 0x6A
| gpio, TwlBg
| gpio, TwlBg
| ?
| Gyro interrupt (GPIO3_2)
|-
|-
| 0x6B
| 0x6B
| gpio, TwlBg
| gpio, TwlBg
| ?
| C-stick "stop" (output) (GPIO3_3)
|-
|-
| 0x6C
| 0x6C
| gpio, TwlBg
| gpio, TwlBg
| ?
| IrDA TX-RC (output) (GPIO3_4)
|-
|-
| 0x6D
| 0x6D
| gpio, TwlBg
| gpio, TwlBg
| ?
| IrDA RXD (GPIO3_5)
|-
|-
| 0x6E
| 0x6E
| gpio, TwlBg
| gpio, TwlBg
| ?
| NFC output1 (?) (GPIO3_6)
|-
|-
| 0x6F
| 0x6F
| gpio, TwlBg
| gpio, TwlBg
| ?
| NFC output2 (?) (GPIO3_7)
|-
|-
| 0x70
| 0x70
| gpio, TwlBg
| gpio, TwlBg
| ?
| Headphones button/half-inserted (active-low) (GPIO3_8)
|-
|-
| 0x71
| 0x71
| gpio, TwlBg
| gpio, TwlBg
| MCU (HOME/POWER pressed/released or WiFi switch pressed)
| MCU interrupt (GPIO3_9)
|-
|-
| 0x72
| 0x72
| gpio, TwlBg
| gpio, TwlBg
| ?
| NFC interrupt (?) (GPIO3_10)
|-
|-
| 0x73
| 0x73
| TwlBg
| TwlBg
| ?
| QTM output (?) (GPIO3_11)
|-
|-
| 0x74
| 0x74
Line 286: Line 310:
| Gamecard inserted
| Gamecard inserted
|-
|-
| 0x78 to 0x7C
| 0x76
| -
| L2C
|-
| 0x78 to 0x7B
| Kernel
| Kernel
| Performance monitor-related
| Core 0-3 Performance monitor counter (any) overflow
|-
|-
| 0x7A to 0x82 (PDN_MPCORE_CFG bit2 set) or
| 0x7A to 0x82 (PDN_MPCORE_CFG bit2 set) or
0x7C to 0x84 (bit2 clear)
0x7C to 0x84 (bit2 clear)
| Kernel
| Kernel
| Performance monitor counter no. X overflowed
| Other PMU interrupts (line may not exist at all)
|}
|}
(interrupts from 0x80 and up can't be mapped in available builds of the kernel)
(interrupts from 0x80 and up can't be mapped in available builds of the kernel)




There are 2 tables in the ARM11 kernel: the first has 32 * 2(or 32 * 4) 8-byte entries. This table is for the private interrupts that belong to each core.  The data for each interrupt can be found by doing table_base + (core_num * 0x100) + (intr_num * 8).  The second table is for public hardware interrupts and the data for each interrupt can be retrieved by doing table_base + (intr_num * 8).
There are 2 tables in the Arm11 kernel: the first has 32 * 2(or 32 * 4) 8-byte entries. This table is for the private interrupts that belong to each core.  The data for each interrupt can be found by doing table_base + (core_num * 0x100) + (intr_num * 8).  The second table is for public hardware interrupts and the data for each interrupt can be retrieved by doing table_base + (intr_num * 8).
 
The Arm11 kernel configures interrupts the following way (it seems the GPIO IRQ layout doesn't match released 3DS models):
 
<nowiki>Interrupts 0x00 to 0x1F: edge-triggered, N-N
Interrupt 0x20: level-sensitive, 1-N
Interrupt 0x21: level-sensitive, 1-N
Interrupt 0x22: level-sensitive, 1-N
Interrupt 0x23: level-sensitive, 1-N
Interrupt 0x24: edge-triggered, 1-N
Interrupt 0x25: level-sensitive, 1-N
Interrupt 0x28: level-sensitive, 1-N
Interrupt 0x29: level-sensitive, 1-N
Interrupt 0x2a: level-sensitive, 1-N
Interrupt 0x2b: level-sensitive, 1-N
Interrupt 0x2c: level-sensitive, 1-N
Interrupt 0x2d: level-sensitive, 1-N
Interrupt 0x30: level-sensitive, 1-N
Interrupt 0x31: level-sensitive, 1-N
Interrupt 0x32: level-sensitive, 1-N
Interrupt 0x33: level-sensitive, 1-N
Interrupt 0x34: level-sensitive, 1-N
Interrupt 0x35: level-sensitive, 1-N
Interrupt 0x36: level-sensitive, 1-N
Interrupt 0x37: level-sensitive, 1-N
Interrupt 0x38: level-sensitive, 1-N
Interrupt 0x39: level-sensitive, 1-N
Interrupt 0x3a: level-sensitive, 1-N
Interrupt 0x3b: level-sensitive, 1-N
Interrupt 0x40: edge-triggered, 1-N
Interrupt 0x41: edge-triggered, 1-N
Interrupt 0x42: edge-triggered, 1-N
Interrupt 0x43: edge-triggered, 1-N
Interrupt 0x44: edge-triggered, 1-N
Interrupt 0x45: edge-triggered, 1-N
Interrupt 0x46: edge-triggered, 1-N
Interrupt 0x48: edge-triggered, 1-N
Interrupt 0x49: edge-triggered, 1-N
Interrupt 0x4a: edge-triggered, 1-N
Interrupt 0x4b: edge-triggered, 1-N
Interrupt 0x4c: edge-triggered, 1-N
Interrupt 0x4d: edge-triggered, 1-N
Interrupt 0x4e: edge-triggered, 1-N
Interrupt 0x4f: level-sensitive, 1-N
Interrupt 0x50: edge-triggered, 1-N
Interrupt 0x51: edge-triggered, 1-N
Interrupt 0x52: edge-triggered, 1-N
Interrupt 0x53: edge-triggered, 1-N
Interrupt 0x54: edge-triggered, 1-N
Interrupt 0x55: edge-triggered, 1-N
Interrupt 0x56: edge-triggered, 1-N
Interrupt 0x57: edge-triggered, 1-N
Interrupt 0x58: level-sensitive, 1-N
Interrupt 0x59: edge-triggered, 1-N
Interrupt 0x5a: edge-triggered, 1-N
Interrupt 0x5b: edge-triggered, 1-N
Interrupt 0x5f: edge-triggered, 1-N
Interrupt 0x60: edge-triggered, 1-N
Interrupt 0x61: edge-triggered, 1-N
Interrupt 0x64: edge-triggered, 1-N
Interrupt 0x65: edge-triggered, 1-N
Interrupt 0x66: edge-triggered, 1-N
Interrupt 0x68: edge-triggered, 1-N
Interrupt 0x69: edge-triggered, 1-N
Interrupt 0x6a: edge-triggered, 1-N
Interrupt 0x6b: edge-triggered, 1-N
Interrupt 0x6c: edge-triggered, 1-N
Interrupt 0x6d: edge-triggered, 1-N
Interrupt 0x6e: edge-triggered, 1-N
Interrupt 0x6f: edge-triggered, 1-N
Interrupt 0x70: edge-triggered, 1-N
Interrupt 0x71: edge-triggered, 1-N
Interrupt 0x72: edge-triggered, 1-N
Interrupt 0x73: edge-triggered, 1-N
Interrupt 0x74: edge-triggered, 1-N
Interrupt 0x75: edge-triggered, 1-N
Interrupt 0x76: level-sensitive, 1-N
Interrupt 0x77: level-sensitive, 1-N
Interrupt 0x78: edge-triggered, 1-N
Interrupt 0x79: level-sensitive, 1-N
Interrupt 0x7a: level-sensitive, 1-N
Interrupt 0x7b: level-sensitive, 1-N
Interrupt 0x7c: level-sensitive, 1-N
Interrupt 0x7d: level-sensitive, 1-N</nowiki>


= InterruptData =
= InterruptData =
Retrieved from "https://www.3dbrew.org/wiki/ARM11_Interrupts"