GNUBoot
/
coreboot-kgpe-d16
2
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

drivers/generic/ioapic: Use arch/x86/ioapic 

Change-Id: Ibfaf6693288005463e45831fe100a5052e97cf2f
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/55185
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 18:36:05 +03:00
parent 93c1eef6c1
commit 8cc25d229f
3 changed files with 20 additions and 74 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
src/arch/x86/include/arch/ioapic.h
View File

@ -9,7 +9,7 @@
#ifndef __ACPI__
#include <stdint.h>
#include <types.h>
#define ALL (0xff << 24)
#define NONE (0)
@ -31,6 +31,9 @@ void io_apic_write(void *ioapic_base, u32 reg, u32 value);
void set_ioapic_id(void *ioapic_base, u8 ioapic_id);
void setup_ioapic(void *ioapic_base, u8 ioapic_id);
void clear_ioapic(void *ioapic_base);
void setup_ioapic_helper(void *ioapic_base, u8 ioapic_id, bool irq_on_fsb,
bool enable_virtual_wire);
#endif
#endif

21
src/arch/x86/ioapic.c
View File

@ -109,11 +109,14 @@ void set_ioapic_id(void *ioapic_base, u8 ioapic_id)
}
static void load_vectors(void *ioapic_base)
void setup_ioapic_helper(void *ioapic_base, u8 ioapic_id, bool irq_on_fsb,
bool enable_virtual_wire)
{
int first = 1, last;
int first = 0, last;
if (CONFIG(IOAPIC_INTERRUPTS_ON_FSB)) {
set_ioapic_id(ioapic_base, ioapic_id);
if (irq_on_fsb) {
/*
* For the Pentium 4 and above APICs deliver their interrupts
* on the front side bus, enable that.
@ -121,20 +124,24 @@ static void load_vectors(void *ioapic_base)
printk(BIOS_DEBUG, "IOAPIC: Enabling interrupts on FSB\n");
io_apic_write(ioapic_base, 0x03,
io_apic_read(ioapic_base, 0x03) | (1 << 0));
} else if (CONFIG(IOAPIC_INTERRUPTS_ON_APIC_SERIAL_BUS)) {
} else {
printk(BIOS_DEBUG,
"IOAPIC: Enabling interrupts on APIC serial bus\n");
io_apic_write(ioapic_base, 0x03, 0);
}
route_i8259_irq0(ioapic_base);
if (enable_virtual_wire) {
route_i8259_irq0(ioapic_base);
first = 1;
}
last = ioapic_interrupt_count(ioapic_base) - 1;
clear_vectors(ioapic_base, first, last);
}
void setup_ioapic(void *ioapic_base, u8 ioapic_id)
{
set_ioapic_id(ioapic_base, ioapic_id);
load_vectors(ioapic_base);
setup_ioapic_helper(ioapic_base, ioapic_id,
CONFIG(IOAPIC_INTERRUPTS_ON_FSB), true);
}

68
src/drivers/generic/ioapic/ioapic.c
View File

@ -9,76 +9,12 @@
static void ioapic_init(struct device *dev)
{
struct drivers_generic_ioapic_config *config = dev->chip_info;
u32 bsp_lapicid = lapicid();
u32 low, high;
u32 i, ioapic_interrupts;
void *ioapic_base;
u8 ioapic_id;
if (!dev->enabled || !config)
return;
ioapic_base = config->base;
ioapic_id = config->apicid;
printk(BIOS_DEBUG, "IOAPIC: Initializing IOAPIC at %p\n",
ioapic_base);
printk(BIOS_DEBUG, "IOAPIC: Bootstrap Processor Local APIC = 0x%02x\n",
bsp_lapicid);
if (ioapic_id) {
printk(BIOS_DEBUG, "IOAPIC: ID = 0x%02x\n", ioapic_id);
/* Set IOAPIC ID if it has been specified. */
io_apic_write(ioapic_base, 0x00,
(io_apic_read(ioapic_base, 0x00) & 0xf0ffffff) |
(ioapic_id << 24));
}
/* Read the available number of interrupts. */
ioapic_interrupts = (io_apic_read(ioapic_base, 0x01) >> 16) & 0xff;
if (!ioapic_interrupts || ioapic_interrupts == 0xff)
ioapic_interrupts = 24;
printk(BIOS_DEBUG, "IOAPIC: %d interrupts\n", ioapic_interrupts);
if (config->irq_on_fsb) {
/*
* For the Pentium 4 and above APICs deliver their interrupts
* on the front side bus, enable that.
*/
printk(BIOS_DEBUG, "IOAPIC: Enabling interrupts on FSB\n");
io_apic_write(ioapic_base, 0x03,
io_apic_read(ioapic_base, 0x03) | (1 << 0));
} else {
printk(BIOS_DEBUG, "IOAPIC: Enabling interrupts on APIC serial bus\n");
io_apic_write(ioapic_base, 0x03, 0);
}
if (config->enable_virtual_wire) {
/* Enable Virtual Wire Mode. */
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);
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);
}
low = INT_DISABLED;
high = NONE;
for (i = 1; i < ioapic_interrupts; i++) {
io_apic_write(ioapic_base, i * 2 + 0x10, low);
io_apic_write(ioapic_base, i * 2 + 0x11, high);
printk(BIOS_SPEW, "IOAPIC: reg 0x%08x value 0x%08x 0x%08x\n",
i, high, low);
}
setup_ioapic_helper(config->base, config->apicid, config->irq_on_fsb,
config->enable_virtual_wire);
}
static void ioapic_read_resources(struct device *dev)