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Drivers: hv: vmbus: Define an APIs to manage interrupt state 

As part of cleaning up architecture specific code, define APIs
to manage interrupt state.

Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
K. Y. Srinivasan 2017-01-19 11:51:58 -07:00 committed by Greg Kroah-Hartman
parent 7297ff0ca9
commit 37e11d5c70
2 changed files with 11 additions and 4 deletions
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3
arch/x86/include/asm/mshyperv.h
View File

@ -151,6 +151,9 @@ static inline void vmbus_signal_eom(struct hv_message *msg, u32 old_msg_type)
#define hv_get_vp_index(index) rdmsrl(HV_X64_MSR_VP_INDEX, index)
#define hv_get_synint_state(int_num, val) rdmsrl(int_num, val)
#define hv_set_synint_state(int_num, val) wrmsrl(int_num, val)
void hyperv_callback_vector(void);
#ifdef CONFIG_TRACING
#define trace_hyperv_callback_vector hyperv_callback_vector

12
drivers/hv/hv.c
View File

@ -284,14 +284,16 @@ int hv_synic_init(unsigned int cpu)
hv_set_siefp(siefp.as_uint64);
/* Setup the shared SINT. */
rdmsrl(HV_X64_MSR_SINT0 + VMBUS_MESSAGE_SINT, shared_sint.as_uint64);
hv_get_synint_state(HV_X64_MSR_SINT0 + VMBUS_MESSAGE_SINT,
shared_sint.as_uint64);
shared_sint.as_uint64 = 0;
shared_sint.vector = HYPERVISOR_CALLBACK_VECTOR;
shared_sint.masked = false;
shared_sint.auto_eoi = true;
wrmsrl(HV_X64_MSR_SINT0 + VMBUS_MESSAGE_SINT, shared_sint.as_uint64);
hv_set_synint_state(HV_X64_MSR_SINT0 + VMBUS_MESSAGE_SINT,
shared_sint.as_uint64);
/* Enable the global synic bit */
hv_get_synic_state(sctrl.as_uint64);
@ -384,13 +386,15 @@ int hv_synic_cleanup(unsigned int cpu)
hv_ce_shutdown(hv_context.clk_evt[cpu]);
}
rdmsrl(HV_X64_MSR_SINT0 + VMBUS_MESSAGE_SINT, shared_sint.as_uint64);
hv_get_synint_state(HV_X64_MSR_SINT0 + VMBUS_MESSAGE_SINT,
shared_sint.as_uint64);
shared_sint.masked = 1;
/* Need to correctly cleanup in the case of SMP!!! */
/* Disable the interrupt */
wrmsrl(HV_X64_MSR_SINT0 + VMBUS_MESSAGE_SINT, shared_sint.as_uint64);
hv_set_synint_state(HV_X64_MSR_SINT0 + VMBUS_MESSAGE_SINT,
shared_sint.as_uint64);
hv_get_simp(simp.as_uint64);
simp.simp_enabled = 0;