forked from Mirrors/opensbi
lib: sbi: Simplify timer platform operations
Instead of having timer_value(), timer_event_start(), and timer_event_stop() callbacks in platform operations, it will be much simpler for timer driver to directly register these operations as device to the sbi_timer implementation. Signed-off-by: Anup Patel <anup.patel@wdc.com> Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
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@@ -51,14 +51,12 @@ struct sbi_trap_regs;
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/** Possible feature flags of a platform */
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enum sbi_platform_features {
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/** Platform has timer value */
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SBI_PLATFORM_HAS_TIMER_VALUE = (1 << 0),
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/** Platform has HART hotplug support */
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SBI_PLATFORM_HAS_HART_HOTPLUG = (1 << 1),
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SBI_PLATFORM_HAS_HART_HOTPLUG = (1 << 0),
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/** Platform has fault delegation support */
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SBI_PLATFORM_HAS_MFAULTS_DELEGATION = (1 << 2),
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SBI_PLATFORM_HAS_MFAULTS_DELEGATION = (1 << 1),
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/** Platform has custom secondary hart booting support */
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SBI_PLATFORM_HAS_HART_SECONDARY_BOOT = (1 << 3),
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SBI_PLATFORM_HAS_HART_SECONDARY_BOOT = (1 << 2),
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/** Last index of Platform features*/
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SBI_PLATFORM_HAS_LAST_FEATURE = SBI_PLATFORM_HAS_HART_SECONDARY_BOOT,
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@@ -66,7 +64,7 @@ enum sbi_platform_features {
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/** Default feature set for a platform */
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#define SBI_PLATFORM_DEFAULT_FEATURES \
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(SBI_PLATFORM_HAS_TIMER_VALUE | SBI_PLATFORM_HAS_MFAULTS_DELEGATION)
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(SBI_PLATFORM_HAS_MFAULTS_DELEGATION)
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/** Platform functions */
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struct sbi_platform_operations {
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@@ -115,12 +113,6 @@ struct sbi_platform_operations {
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/** Get tlb flush limit value **/
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u64 (*get_tlbr_flush_limit)(void);
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/** Get platform timer value */
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u64 (*timer_value)(void);
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/** Start platform timer event for current HART */
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void (*timer_event_start)(u64 next_event);
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/** Stop platform timer event for current HART */
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void (*timer_event_stop)(void);
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/** Initialize platform timer for current HART */
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int (*timer_init)(bool cold_boot);
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/** Exit platform timer for current HART */
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@@ -210,9 +202,6 @@ struct sbi_platform {
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#define sbi_platform_ops(__p) \
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((const struct sbi_platform_operations *)(__p)->platform_ops_addr)
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/** Check whether the platform supports timer value */
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#define sbi_platform_has_timer_value(__p) \
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((__p)->features & SBI_PLATFORM_HAS_TIMER_VALUE)
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/** Check whether the platform supports HART hotplug */
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#define sbi_platform_has_hart_hotplug(__p) \
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((__p)->features & SBI_PLATFORM_HAS_HART_HOTPLUG)
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@@ -586,45 +575,6 @@ static inline void sbi_platform_ipi_exit(const struct sbi_platform *plat)
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sbi_platform_ops(plat)->ipi_exit();
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}
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/**
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* Get platform timer value
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*
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* @param plat pointer to struct sbi_platform
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*
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* @return 64-bit timer value
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*/
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static inline u64 sbi_platform_timer_value(const struct sbi_platform *plat)
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{
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if (plat && sbi_platform_ops(plat)->timer_value)
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return sbi_platform_ops(plat)->timer_value();
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return 0;
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}
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/**
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* Start platform timer event for current HART
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*
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* @param plat pointer to struct struct sbi_platform
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* @param next_event timer value when timer event will happen
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*/
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static inline void
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sbi_platform_timer_event_start(const struct sbi_platform *plat, u64 next_event)
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{
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if (plat && sbi_platform_ops(plat)->timer_event_start)
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sbi_platform_ops(plat)->timer_event_start(next_event);
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}
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/**
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* Stop platform timer event for current HART
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*
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* @param plat pointer to struct sbi_platform
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*/
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static inline void
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sbi_platform_timer_event_stop(const struct sbi_platform *plat)
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{
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if (plat && sbi_platform_ops(plat)->timer_event_stop)
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sbi_platform_ops(plat)->timer_event_stop();
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}
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/**
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* Initialize the platform timer for current HART
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*
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