Difference between revisions of "SceCompatMailbox"
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| (2 intermediate revisions by one other user not shown) | |||
| Line 20: | Line 20: | ||
| 0x00 + 4 * ID | | 0x00 + 4 * ID | ||
| 4 | | 4 | ||
| − | | Raise MIPS Compat interrupt <code>ID</code>. Write all ones. | + | | 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 | ||
| Line 28: | Line 28: | ||
== Interrupt raising sequence == | == Interrupt raising sequence == | ||
| − | + | To raise "Compat" interrupt <code>ID</code> to the MIPS processor, the following sequence is used: | |
<source lang="c"> | <source lang="c"> | ||
// Write data to shared address | // Write data to shared address | ||
| Line 39: | Line 39: | ||
dsb(0xf); | dsb(0xf); | ||
</source> | </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);