Contributors: 17
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Ingo Molnar |
95 |
24.93% |
9 |
20.45% |
| Suresh B. Siddha |
82 |
21.52% |
5 |
11.36% |
| Andrew Morton |
79 |
20.73% |
2 |
4.55% |
| Rusty Russell |
37 |
9.71% |
1 |
2.27% |
| Thomas Gleixner |
36 |
9.45% |
12 |
27.27% |
| Yinghai Lu |
20 |
5.25% |
3 |
6.82% |
| Jan Beulich |
6 |
1.57% |
1 |
2.27% |
| Andreas Herrmann |
5 |
1.31% |
1 |
2.27% |
| Venkatesh Pallipadi |
4 |
1.05% |
1 |
2.27% |
| Michael S. Tsirkin |
3 |
0.79% |
1 |
2.27% |
| Len Brown |
3 |
0.79% |
1 |
2.27% |
| Linus Torvalds (pre-git) |
3 |
0.79% |
2 |
4.55% |
| Jaswinder Singh Rajput |
2 |
0.52% |
1 |
2.27% |
| Kees Cook |
2 |
0.52% |
1 |
2.27% |
| Andi Kleen |
2 |
0.52% |
1 |
2.27% |
| Lv Zheng |
1 |
0.26% |
1 |
2.27% |
| Paul Gortmaker |
1 |
0.26% |
1 |
2.27% |
| Total |
381 |
|
44 |
|
// SPDX-License-Identifier: GPL-2.0-only
/*
* Default generic APIC driver. This handles up to 8 CPUs.
*
* Copyright 2003 Andi Kleen, SuSE Labs.
*
* Generic x86 APIC driver probe layer.
*/
#include <linux/export.h>
#include <linux/errno.h>
#include <linux/smp.h>
#include <xen/xen.h>
#include <asm/io_apic.h>
#include <asm/apic.h>
#include <asm/acpi.h>
#include "local.h"
static u32 default_get_apic_id(u32 x)
{
unsigned int ver = GET_APIC_VERSION(apic_read(APIC_LVR));
if (APIC_XAPIC(ver) || boot_cpu_has(X86_FEATURE_EXTD_APICID))
return (x >> 24) & 0xFF;
else
return (x >> 24) & 0x0F;
}
/* should be called last. */
static int probe_default(void)
{
return 1;
}
static struct apic apic_default __ro_after_init = {
.name = "default",
.probe = probe_default,
.dest_mode_logical = true,
.disable_esr = 0,
.init_apic_ldr = default_init_apic_ldr,
.cpu_present_to_apicid = default_cpu_present_to_apicid,
.max_apic_id = 0xFE,
.get_apic_id = default_get_apic_id,
.calc_dest_apicid = apic_flat_calc_apicid,
.send_IPI = default_send_IPI_single,
.send_IPI_mask = default_send_IPI_mask_logical,
.send_IPI_mask_allbutself = default_send_IPI_mask_allbutself_logical,
.send_IPI_allbutself = default_send_IPI_allbutself,
.send_IPI_all = default_send_IPI_all,
.send_IPI_self = default_send_IPI_self,
.read = native_apic_mem_read,
.write = native_apic_mem_write,
.eoi = native_apic_mem_eoi,
.icr_read = native_apic_icr_read,
.icr_write = native_apic_icr_write,
.wait_icr_idle = apic_mem_wait_icr_idle,
.safe_wait_icr_idle = apic_mem_wait_icr_idle_timeout,
};
apic_driver(apic_default);
struct apic *apic __ro_after_init = &apic_default;
EXPORT_SYMBOL_GPL(apic);
static int cmdline_apic __initdata;
static int __init parse_apic(char *arg)
{
struct apic **drv;
if (!arg)
return -EINVAL;
for (drv = __apicdrivers; drv < __apicdrivers_end; drv++) {
if (!strcmp((*drv)->name, arg)) {
apic_install_driver(*drv);
cmdline_apic = 1;
return 0;
}
}
/* Parsed again by __setup for debug/verbose */
return 0;
}
early_param("apic", parse_apic);
void __init x86_32_probe_apic(void)
{
if (!cmdline_apic) {
struct apic **drv;
for (drv = __apicdrivers; drv < __apicdrivers_end; drv++) {
if ((*drv)->probe()) {
apic_install_driver(*drv);
break;
}
}
/* Not visible without early console */
if (drv == __apicdrivers_end)
panic("Didn't find an APIC driver");
}
}