1 /*
2 * APIC driver for the IBM NUMAQ chipset.
3 */
4 #define APIC_DEFINITION 1
5 #include <linux/threads.h>
6 #include <linux/cpumask.h>
7 #include <asm/mpspec.h>
8 #include <asm/genapic.h>
9 #include <asm/fixmap.h>
10 #include <asm/apicdef.h>
11 #include <linux/kernel.h>
12 #include <linux/string.h>
13 #include <linux/init.h>
14 #include <asm/numaq/apicdef.h>
15 #include <linux/smp.h>
16 #include <asm/numaq/apic.h>
17 #include <asm/numaq/ipi.h>
18 #include <asm/numaq/mpparse.h>
19 #include <asm/numaq/wakecpu.h>
20 #include <asm/numaq.h>
21
mps_oem_check(struct mpc_table * mpc,char * oem,char * productid)22 static int mps_oem_check(struct mpc_table *mpc, char *oem, char *productid)
23 {
24 numaq_mps_oem_check(mpc, oem, productid);
25 return found_numaq;
26 }
27
probe_numaq(void)28 static int probe_numaq(void)
29 {
30 /* already know from get_memcfg_numaq() */
31 return found_numaq;
32 }
33
34 /* Hook from generic ACPI tables.c */
acpi_madt_oem_check(char * oem_id,char * oem_table_id)35 static int acpi_madt_oem_check(char *oem_id, char *oem_table_id)
36 {
37 return 0;
38 }
39
vector_allocation_domain(int cpu,cpumask_t * retmask)40 static void vector_allocation_domain(int cpu, cpumask_t *retmask)
41 {
42 /* Careful. Some cpus do not strictly honor the set of cpus
43 * specified in the interrupt destination when using lowest
44 * priority interrupt delivery mode.
45 *
46 * In particular there was a hyperthreading cpu observed to
47 * deliver interrupts to the wrong hyperthread when only one
48 * hyperthread was specified in the interrupt desitination.
49 */
50 *retmask = (cpumask_t){ { [0] = APIC_ALL_CPUS, } };
51 }
52
53 struct genapic apic_numaq = APIC_INIT("NUMAQ", probe_numaq);
54