[PATCH v23 05/11] clocksource: arm_arch_timer: add structs to describe MMIO timer
From: fu.wei at linaro.org <hidden>
Date: 2017-03-31 17:52:43
Also in:
linux-acpi, linux-watchdog, lkml
Subsystem:
the rest · Maintainer:
Linus Torvalds
From: Fu Wei <redacted> In preparation for ACPI GTDT support, this patch adds structs to describe the MMIO timers indepedent of the firmware interface. Subsequent patches will use these to split the FW/HW probing logic, so that the HW probing logic can be shared by ACPI and DT. [Mark: reword commit message] Signed-off-by: Fu Wei <redacted> Reviewed-by: Hanjun Guo <redacted> --- include/clocksource/arm_arch_timer.h | 16 ++++++++++++++++ 1 file changed, 16 insertions(+)
diff --git a/include/clocksource/arm_arch_timer.h b/include/clocksource/arm_arch_timer.h
index 4a98c06..cc805b7 100644
--- a/include/clocksource/arm_arch_timer.h
+++ b/include/clocksource/arm_arch_timer.h@@ -57,6 +57,8 @@ enum arch_timer_spi_nr { #define ARCH_TIMER_MEM_PHYS_ACCESS 2 #define ARCH_TIMER_MEM_VIRT_ACCESS 3 +#define ARCH_TIMER_MEM_MAX_FRAMES 8 + #define ARCH_TIMER_USR_PCT_ACCESS_EN (1 << 0) /* physical counter */ #define ARCH_TIMER_USR_VCT_ACCESS_EN (1 << 1) /* virtual counter */ #define ARCH_TIMER_VIRT_EVT_EN (1 << 2)
@@ -72,6 +74,20 @@ struct arch_timer_kvm_info { int virtual_irq; }; +struct arch_timer_mem_frame { + bool valid; + phys_addr_t cntbase; + size_t size; + int phys_irq; + int virt_irq; +}; + +struct arch_timer_mem { + phys_addr_t cntctlbase; + size_t size; + struct arch_timer_mem_frame frame[ARCH_TIMER_MEM_MAX_FRAMES]; +}; + #ifdef CONFIG_ARM_ARCH_TIMER extern u32 arch_timer_get_rate(void);
--
2.9.3