sravan/system76-coreboot
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

arch/x86/ioapic: Add write_vector() helper

Browse Source 
Change-Id: I4a44aada7d3dbc016e4044c351534a0d8520f0b2
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/55184
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This commit is contained in:
Kyösti Mälkki
2021-06-03 23:14:05 +03:00
parent ea2fb8d80c
commit 93c1eef6c1
1 changed files with 12 additions and 11 deletions
Download Patch File Download Diff File Expand all files Collapse all files

23
src/arch/x86/ioapic.c
View File

@@ -18,6 +18,15 @@ void io_apic_write(void *ioapic_base, u32 reg, u32 value)
write32(ioapic_base + 0x10, value);
}
static void write_vector(void *ioapic_base, u8 vector, u32 high, u32 low)
{
io_apic_write(ioapic_base, vector * 2 + 0x10, low);
io_apic_write(ioapic_base, vector * 2 + 0x11, high);
printk(BIOS_SPEW, "IOAPIC: vector 0x%02x value 0x%08x 0x%08x\n",
vector, high, low);
}
static int ioapic_interrupt_count(void *ioapic_base)
{
/* Read the available number of interrupts. */
@@ -42,13 +51,8 @@ static void clear_vectors(void *ioapic_base, u8 first, u8 last)
low = INT_DISABLED;
high = NONE;
for (i = first; i <= last; i++) {
io_apic_write(ioapic_base, i * 2 + 0x10, low);
io_apic_write(ioapic_base, i * 2 + 0x11, high);
printk(BIOS_SPEW, "IOAPIC: vector 0x%02x value 0x%08x 0x%08x\n",
i, high, low);
}
for (i = first; i <= last; i++)
write_vector(ioapic_base, i, high, low);
if (io_apic_read(ioapic_base, 0x10) == 0xffffffff) {
printk(BIOS_WARNING, "IOAPIC not responding.\n");
@@ -75,15 +79,12 @@ static void route_i8259_irq0(void *ioapic_base)
low = INT_ENABLED | TRIGGER_EDGE | POLARITY_HIGH | PHYSICAL_DEST | ExtINT;
high = bsp_lapicid << (56 - 32);
io_apic_write(ioapic_base, 0x10, low);
io_apic_write(ioapic_base, 0x11, high);
write_vector(ioapic_base, 0, high, low);
if (io_apic_read(ioapic_base, 0x10) == 0xffffffff) {
printk(BIOS_WARNING, "IOAPIC not responding.\n");
return;
}
printk(BIOS_SPEW, "IOAPIC: reg 0x%08x value 0x%08x 0x%08x\n", 0, high, low);
}
void set_ioapic_id(void *ioapic_base, u8 ioapic_id)