[PATCH v4 10/56] KVM: arm/arm64: Export mmio_read/write_bus
From: andre.przywara@arm.com (Andre Przywara)
Date: 2016-05-16 09:52:58
Also in:
kvm, kvmarm
Subsystem:
arm port, arm64 port (aarch64 architecture), kernel virtual machine for arm64 (kvm/arm64), the rest · Maintainers:
Russell King, Catalin Marinas, Will Deacon, Marc Zyngier, Oliver Upton, Linus Torvalds
From: Christoffer Dall <redacted>
Rename mmio_{read,write}_bus to kvm_mmio_{read,write}_bus and export
them out of mmio.c.
This will be needed later for the new VGIC implementation.
Signed-off-by: Christoffer Dall <redacted>
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Acked-by: Marc Zyngier <redacted>
---
arch/arm/include/asm/kvm_mmio.h | 3 +++
arch/arm/kvm/mmio.c | 10 +++++-----
arch/arm64/include/asm/kvm_mmio.h | 3 +++
3 files changed, 11 insertions(+), 5 deletions(-)
diff --git a/arch/arm/include/asm/kvm_mmio.h b/arch/arm/include/asm/kvm_mmio.h
index d8e90c8..f3a7de7 100644
--- a/arch/arm/include/asm/kvm_mmio.h
+++ b/arch/arm/include/asm/kvm_mmio.h@@ -28,6 +28,9 @@ struct kvm_decode { bool sign_extend; }; +void kvm_mmio_write_buf(void *buf, unsigned int len, unsigned long data); +unsigned long kvm_mmio_read_buf(const void *buf, unsigned int len); + int kvm_handle_mmio_return(struct kvm_vcpu *vcpu, struct kvm_run *run); int io_mem_abort(struct kvm_vcpu *vcpu, struct kvm_run *run, phys_addr_t fault_ipa);
diff --git a/arch/arm/kvm/mmio.c b/arch/arm/kvm/mmio.c
index 0158e9e..10f80a6 100644
--- a/arch/arm/kvm/mmio.c
+++ b/arch/arm/kvm/mmio.c@@ -23,7 +23,7 @@ #include "trace.h" -static void mmio_write_buf(char *buf, unsigned int len, unsigned long data) +void kvm_mmio_write_buf(void *buf, unsigned int len, unsigned long data) { void *datap = NULL; union {
@@ -55,7 +55,7 @@ static void mmio_write_buf(char *buf, unsigned int len, unsigned long data) memcpy(buf, datap, len); } -static unsigned long mmio_read_buf(char *buf, unsigned int len) +unsigned long kvm_mmio_read_buf(const void *buf, unsigned int len) { unsigned long data = 0; union {
@@ -66,7 +66,7 @@ static unsigned long mmio_read_buf(char *buf, unsigned int len) switch (len) { case 1: - data = buf[0]; + data = *(u8 *)buf; break; case 2: memcpy(&tmp.hword, buf, len);
@@ -103,7 +103,7 @@ int kvm_handle_mmio_return(struct kvm_vcpu *vcpu, struct kvm_run *run) if (len > sizeof(unsigned long)) return -EINVAL; - data = mmio_read_buf(run->mmio.data, len); + data = kvm_mmio_read_buf(run->mmio.data, len); if (vcpu->arch.mmio_decode.sign_extend && len < sizeof(unsigned long)) {
@@ -189,7 +189,7 @@ int io_mem_abort(struct kvm_vcpu *vcpu, struct kvm_run *run, len); trace_kvm_mmio(KVM_TRACE_MMIO_WRITE, len, fault_ipa, data); - mmio_write_buf(data_buf, len, data); + kvm_mmio_write_buf(data_buf, len, data); ret = kvm_io_bus_write(vcpu, KVM_MMIO_BUS, fault_ipa, len, data_buf);
diff --git a/arch/arm64/include/asm/kvm_mmio.h b/arch/arm64/include/asm/kvm_mmio.h
index fe612a9..75ea420 100644
--- a/arch/arm64/include/asm/kvm_mmio.h
+++ b/arch/arm64/include/asm/kvm_mmio.h@@ -30,6 +30,9 @@ struct kvm_decode { bool sign_extend; }; +void kvm_mmio_write_buf(void *buf, unsigned int len, unsigned long data); +unsigned long kvm_mmio_read_buf(const void *buf, unsigned int len); + int kvm_handle_mmio_return(struct kvm_vcpu *vcpu, struct kvm_run *run); int io_mem_abort(struct kvm_vcpu *vcpu, struct kvm_run *run, phys_addr_t fault_ipa);
--
2.8.2