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authorvenkatesh.pallipadi@intel.com <venkatesh.pallipadi@intel.com>2008-09-05 18:02:17 -0700
committerIngo Molnar <mingo@elte.hu>2008-10-16 16:53:07 +0200
commit58ac1e76ce77d515bd5cb65dbc465a040da341c6 (patch)
treee1bd9e60aaaa5098ea368c04043adf2a79fca604 /include/asm-x86
parentb40d575bf0679c45aaf9e1161fc51a6b041b7210 (diff)
downloadop-kernel-dev-58ac1e76ce77d515bd5cb65dbc465a040da341c6.zip
op-kernel-dev-58ac1e76ce77d515bd5cb65dbc465a040da341c6.tar.gz
x86: HPET_MSI Basic HPET_MSI setup code
Basic HPET MSI setup code. Routines to perform basic MSI read write in HPET memory map and setting up irq_chip for HPET MSI. Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Signed-off-by: Shaohua Li <shaohua.li@intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'include/asm-x86')
-rw-r--r--include/asm-x86/hpet.h21
1 files changed, 21 insertions, 0 deletions
diff --git a/include/asm-x86/hpet.h b/include/asm-x86/hpet.h
index cbbbb6d..58b273f 100644
--- a/include/asm-x86/hpet.h
+++ b/include/asm-x86/hpet.h
@@ -1,6 +1,8 @@
#ifndef ASM_X86__HPET_H
#define ASM_X86__HPET_H
+#include <linux/msi.h>
+
#ifdef CONFIG_HPET_TIMER
#define HPET_MMAP_SIZE 1024
@@ -10,6 +12,11 @@
#define HPET_CFG 0x010
#define HPET_STATUS 0x020
#define HPET_COUNTER 0x0f0
+
+#define HPET_Tn_CFG(n) (0x100 + 0x20 * n)
+#define HPET_Tn_CMP(n) (0x108 + 0x20 * n)
+#define HPET_Tn_ROUTE(n) (0x110 + 0x20 * n)
+
#define HPET_T0_CFG 0x100
#define HPET_T0_CMP 0x108
#define HPET_T0_ROUTE 0x110
@@ -65,6 +72,20 @@ extern void hpet_disable(void);
extern unsigned long hpet_readl(unsigned long a);
extern void force_hpet_resume(void);
+extern void hpet_msi_unmask(unsigned int irq);
+extern void hpet_msi_mask(unsigned int irq);
+extern void hpet_msi_write(unsigned int irq, struct msi_msg *msg);
+extern void hpet_msi_read(unsigned int irq, struct msi_msg *msg);
+
+#ifdef CONFIG_PCI_MSI
+extern int arch_setup_hpet_msi(unsigned int irq);
+#else
+static inline int arch_setup_hpet_msi(unsigned int irq)
+{
+ return -EINVAL;
+}
+#endif
+
#ifdef CONFIG_HPET_EMULATE_RTC
#include <linux/interrupt.h>
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