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x86, mrst: Add vrtc platform data setup code

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vRTC information is obtained from SFI tables on Moorestown, this patch parses
these tables and assign the information.

Signed-off-by: Feng Tang <feng.tang@intel.com>
LKML-Reference: <43F901BD926A4E43B106BF17856F07559FB80D0D@orsmsx508.amr.corp.intel.com>
Signed-off-by: Jacob Pan <jacob.jun.pan@intel.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
This commit is contained in:
Feng Tang 2010-02-12 03:37:38 -08:00 committed by H. Peter Anvin
parent 16ab539585
commit cf08945596
2 changed files with 47 additions and 0 deletions
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2
arch/x86/include/asm/mrst.h
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@ -11,7 +11,9 @@
#ifndef _ASM_X86_MRST_H
#define _ASM_X86_MRST_H
extern int pci_mrst_init(void);
int __init sfi_parse_mrtc(struct sfi_table_header *table);
#define SFI_MTMR_MAX_NUM 8
#define SFI_MRTC_MAX 8
#endif /* _ASM_X86_MRST_H */

45
arch/x86/kernel/mrst.c
View File

@ -13,6 +13,7 @@
#include <linux/kernel.h>
#include <linux/sfi.h>
#include <linux/irq.h>
#include <linux/module.h>
#include <asm/setup.h>
#include <asm/mpspec_def.h>
@ -27,6 +28,10 @@ static u32 sfi_mtimer_usage[SFI_MTMR_MAX_NUM];
static struct sfi_timer_table_entry sfi_mtimer_array[SFI_MTMR_MAX_NUM];
int sfi_mtimer_num;
struct sfi_rtc_table_entry sfi_mrtc_array[SFI_MRTC_MAX];
EXPORT_SYMBOL_GPL(sfi_mrtc_array);
int sfi_mrtc_num;
static inline void assign_to_mp_irq(struct mpc_intsrc *m,
struct mpc_intsrc *mp_irq)
{
@ -126,6 +131,46 @@ void sfi_free_mtmr(struct sfi_timer_table_entry *mtmr)
}
}
/* parse all the mrtc info to a global mrtc array */
int __init sfi_parse_mrtc(struct sfi_table_header *table)
{
struct sfi_table_simple *sb;
struct sfi_rtc_table_entry *pentry;
struct mpc_intsrc mp_irq;
int totallen;
sb = (struct sfi_table_simple *)table;
if (!sfi_mrtc_num) {
sfi_mrtc_num = SFI_GET_NUM_ENTRIES(sb,
struct sfi_rtc_table_entry);
pentry = (struct sfi_rtc_table_entry *)sb->pentry;
totallen = sfi_mrtc_num * sizeof(*pentry);
memcpy(sfi_mrtc_array, pentry, totallen);
}
printk(KERN_INFO "SFI: RTC info (num = %d):\n", sfi_mrtc_num);
pentry = sfi_mrtc_array;
for (totallen = 0; totallen < sfi_mrtc_num; totallen++, pentry++) {
printk(KERN_INFO "RTC[%d]: paddr = 0x%08x, irq = %d\n",
totallen, (u32)pentry->phys_addr, pentry->irq);
mp_irq.type = MP_IOAPIC;
mp_irq.irqtype = mp_INT;
mp_irq.irqflag = 0;
mp_irq.srcbus = 0;
mp_irq.srcbusirq = pentry->irq; /* IRQ */
mp_irq.dstapic = MP_APIC_ALL;
mp_irq.dstirq = pentry->irq;
save_mp_irq(&mp_irq);
}
return 0;
}
void __init mrst_rtc_init(void)
{
sfi_table_parse(SFI_SIG_MRTC, NULL, NULL, sfi_parse_mrtc);
}
/*
* Moorestown specific x86_init function overrides and early setup
* calls.