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Subject[PATCH v23 05/11] clocksource: arm_arch_timer: add structs to describe MMIO timer
Date
From: Fu Wei <fu.wei@linaro.org>

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 <fu.wei@linaro.org>
Reviewed-by: Hanjun Guo <hanjun.guo@linaro.org>
---
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
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