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authorFeng Tang <feng.tang@intel.com>2010-02-12 03:37:38 -0800
committerH. Peter Anvin <hpa@zytor.com>2010-02-23 23:15:19 -0800
commitcf089455966e21aeb8e4cd2669e0c1885667b04e (patch)
tree83c1922684029e9b71b41db6aff804ab0d68353e
parent16ab5395856d8953ae3d81e81bd6a8c269a1bfd6 (diff)
downloadblackbird-op-linux-cf089455966e21aeb8e4cd2669e0c1885667b04e.tar.gz
blackbird-op-linux-cf089455966e21aeb8e4cd2669e0c1885667b04e.zip
x86, mrst: Add vrtc platform data setup code
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>
-rw-r--r--arch/x86/include/asm/mrst.h2
-rw-r--r--arch/x86/kernel/mrst.c45
2 files changed, 47 insertions, 0 deletions
diff --git a/arch/x86/include/asm/mrst.h b/arch/x86/include/asm/mrst.h
index fa144f2dd256..451d30e7f62d 100644
--- a/arch/x86/include/asm/mrst.h
+++ b/arch/x86/include/asm/mrst.h
@@ -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 */
diff --git a/arch/x86/kernel/mrst.c b/arch/x86/kernel/mrst.c
index bb6e45c71dde..b7fa049c826c 100644
--- a/arch/x86/kernel/mrst.c
+++ b/arch/x86/kernel/mrst.c
@@ -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.
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