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| author | venkatesh.pallipadi@intel.com <venkatesh.pallipadi@intel.com> | 2008-09-06 03:02:17 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-10-16 16:53:07 +0200 |
| commit | 58ac1e76ce77d515bd5cb65dbc465a040da341c6 (patch) | |
| tree | e1bd9e60aaaa5098ea368c04043adf2a79fca604 /include/asm-x86/hpet.h | |
| parent | x86: HPET_MSI Refactor code in preparation for HPET_MSI (diff) | |
| download | linux-58ac1e76ce77d515bd5cb65dbc465a040da341c6.tar.xz linux-58ac1e76ce77d515bd5cb65dbc465a040da341c6.zip | |
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 '')
| -rw-r--r-- | include/asm-x86/hpet.h | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/include/asm-x86/hpet.h b/include/asm-x86/hpet.h index cbbbb6d4dd32..58b273f6ef07 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> |