Difference between revisions of "SceCompatMailbox"
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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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(4 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. 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);