SceCompatMailbox: Difference between revisions
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(Created page with "== SceCompatMailbox == {| class='wikitable' |- ! Address ! Size |- | 0xE5070000 | 0x1000 |} == Registers == {| class='wikitable' |- ! Offset ! Size ! Comments |- | 0x00 + 4...") |
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| Line 20: | Line 20: | ||
| 0x00 + 4 * ID | | 0x00 + 4 * ID | ||
| 4 | | 4 | ||
| | | Raise MIPS Compat interrupt <code>ID</code>. Write all ones. Interrupts will become visible at <code>0xBC300030</code> on [[PSP_Emulator#Interrupt_manager|MIPS side]] | ||
|- | |- | ||
| 0x80 + 4 * ID | | 0x80 + 4 * ID | ||
| 4 | | 4 | ||
| | | Enable raising MIPS Compat interrupt <code>ID</code>. Write all ones | ||
|} | |} | ||
== Interrupt raising sequence == | |||
To raise "Compat" interrupt <code>ID</code> to the MIPS processor, the following sequence is used: | |||
<source lang="c"> | |||
// Write data to shared address | |||
shared->foo = bar; | |||
// Trigger interrupt | |||
dsb(0xf); | |||
*(u32 *)(0xE5070000 + ID * 4 + 0x80) = 0xffffffff; | |||
dsb(0xf); | |||
*(u32 *)(0xE5070000 + ID * 4) = 0xffffffff; | |||
dsb(0xf); | |||
</source> | |||
[[Category:Kernel]] | |||
[[Category:MMIO]] | |||
Latest revision as of 20:52, 1 May 2023
SceCompatMailbox
| Address | Size |
|---|---|
| 0xE5070000 | 0x1000 |
Registers
| Offset | Size | Comments |
|---|---|---|
| 0x00 + 4 * ID | 4 | Raise MIPS Compat interrupt ID. Write all ones. Interrupts will become visible at 0xBC300030 on MIPS side
|
| 0x80 + 4 * ID | 4 | Enable raising MIPS Compat interrupt ID. Write all ones
|
Interrupt raising sequence
To raise "Compat" interrupt ID to the MIPS processor, the following sequence is used:
// Write data to shared address shared->foo = bar; // Trigger interrupt dsb(0xf); *(u32 *)(0xE5070000 + ID * 4 + 0x80) = 0xffffffff; dsb(0xf); *(u32 *)(0xE5070000 + ID * 4) = 0xffffffff; dsb(0xf);