From: marc.zyngier@arm.com (Marc Zyngier)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 13/29] arm64: KVM: MMIO access backend
Date: Tue, 5 Mar 2013 03:47:29 +0000 [thread overview]
Message-ID: <1362455265-24165-14-git-send-email-marc.zyngier@arm.com> (raw)
In-Reply-To: <1362455265-24165-1-git-send-email-marc.zyngier@arm.com>
Define the necessary structures to perform an MMIO access.
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
---
arch/arm64/include/asm/kvm_mmio.h | 59 +++++++++++++++++++++++++++++++++++++++
1 file changed, 59 insertions(+)
create mode 100644 arch/arm64/include/asm/kvm_mmio.h
diff --git a/arch/arm64/include/asm/kvm_mmio.h b/arch/arm64/include/asm/kvm_mmio.h
new file mode 100644
index 0000000..fc2f689
--- /dev/null
+++ b/arch/arm64/include/asm/kvm_mmio.h
@@ -0,0 +1,59 @@
+/*
+ * Copyright (C) 2012 - Virtual Open Systems and Columbia University
+ * Author: Christoffer Dall <c.dall@virtualopensystems.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License, version 2, as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef __ARM64_KVM_MMIO_H__
+#define __ARM64_KVM_MMIO_H__
+
+#include <linux/kvm_host.h>
+#include <asm/kvm_asm.h>
+#include <asm/kvm_arm.h>
+
+/*
+ * This is annoying. The mmio code requires this, even if we don't
+ * need any decoding. To be fixed.
+ */
+struct kvm_decode {
+ unsigned long rt;
+ bool sign_extend;
+};
+
+/*
+ * The in-kernel MMIO emulation code wants to use a copy of run->mmio,
+ * which is an anonymous type. Use our own type instead.
+ */
+struct kvm_exit_mmio {
+ phys_addr_t phys_addr;
+ u8 data[8];
+ u32 len;
+ bool is_write;
+};
+
+static inline void kvm_prepare_mmio(struct kvm_run *run,
+ struct kvm_exit_mmio *mmio)
+{
+ run->mmio.phys_addr = mmio->phys_addr;
+ run->mmio.len = mmio->len;
+ run->mmio.is_write = mmio->is_write;
+ memcpy(run->mmio.data, mmio->data, mmio->len);
+ run->exit_reason = KVM_EXIT_MMIO;
+}
+
+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);
+
+#endif /* __ARM64_KVM_MMIO_H__ */
--
1.7.12.4
next prev parent reply other threads:[~2013-03-05 3:47 UTC|newest]
Thread overview: 64+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-03-05 3:47 [PATCH 00/29] Port of KVM to arm64 Marc Zyngier
2013-03-05 3:47 ` [PATCH 01/29] arm64: KVM: define HYP and Stage-2 translation page flags Marc Zyngier
2013-03-05 3:47 ` [PATCH 02/29] arm64: KVM: HYP mode idmap support Marc Zyngier
2013-03-05 3:47 ` [PATCH 03/29] arm64: KVM: EL2 register definitions Marc Zyngier
2013-03-05 3:47 ` [PATCH 04/29] arm64: KVM: system register definitions for 64bit guests Marc Zyngier
2013-03-07 10:33 ` [kvmarm] " Alexander Graf
2013-03-08 3:23 ` Marc Zyngier
2013-03-12 13:20 ` Christopher Covington
2013-03-12 13:41 ` Christopher Covington
2013-03-12 13:50 ` Marc Zyngier
2013-03-05 3:47 ` [PATCH 05/29] arm64: KVM: Basic ESR_EL2 helpers and vcpu register access Marc Zyngier
2013-03-16 0:55 ` Geoff Levand
2013-03-05 3:47 ` [PATCH 06/29] arm64: KVM: fault injection into a guest Marc Zyngier
2013-03-12 13:20 ` Christopher Covington
2013-03-12 14:25 ` Marc Zyngier
2013-03-16 1:03 ` Geoff Levand
2013-03-05 3:47 ` [PATCH 07/29] arm64: KVM: architecture specific MMU backend Marc Zyngier
2013-03-05 3:47 ` [PATCH 08/29] arm64: KVM: user space interface Marc Zyngier
2013-03-07 8:09 ` Michael S. Tsirkin
2013-03-08 3:46 ` [kvmarm] " Marc Zyngier
2013-03-10 9:23 ` Michael S. Tsirkin
2013-03-05 3:47 ` [PATCH 09/29] arm64: KVM: system register handling Marc Zyngier
2013-03-07 10:30 ` [kvmarm] " Alexander Graf
2013-03-08 3:29 ` Marc Zyngier
2013-03-25 8:19 ` Marc Zyngier
2013-04-23 23:07 ` Christoffer Dall
2013-03-05 3:47 ` [PATCH 10/29] arm64: KVM: Cortex-A57 specific system registers handling Marc Zyngier
2013-03-13 18:30 ` Christopher Covington
2013-03-14 10:26 ` Marc Zyngier
2013-03-05 3:47 ` [PATCH 11/29] arm64: KVM: virtual CPU reset Marc Zyngier
2013-03-05 3:47 ` [PATCH 12/29] arm64: KVM: kvm_arch and kvm_vcpu_arch definitions Marc Zyngier
2013-03-12 17:30 ` Christopher Covington
2013-03-05 3:47 ` Marc Zyngier [this message]
2013-03-05 3:47 ` [PATCH 14/29] arm64: KVM: guest one-reg interface Marc Zyngier
2013-03-12 17:31 ` Christopher Covington
2013-03-12 18:05 ` Marc Zyngier
2013-03-12 22:07 ` Christopher Covington
2013-03-13 7:48 ` Marc Zyngier
2013-03-13 20:34 ` Christopher Covington
2013-03-14 8:57 ` [kvmarm] " Peter Maydell
2013-03-20 20:06 ` Christopher Covington
2013-03-05 3:47 ` [PATCH 15/29] arm64: KVM: hypervisor initialization code Marc Zyngier
2013-03-05 3:47 ` [PATCH 16/29] arm64: KVM: HYP mode world switch implementation Marc Zyngier
2013-03-13 19:59 ` Christopher Covington
2013-03-20 20:04 ` Christopher Covington
2013-03-21 11:54 ` Marc Zyngier
2013-03-05 3:47 ` [PATCH 17/29] arm64: KVM: Exit handling Marc Zyngier
2013-03-05 3:47 ` [PATCH 18/29] arm64: KVM: Plug the VGIC Marc Zyngier
2013-03-05 3:47 ` [PATCH 19/29] arm64: KVM: Plug the arch timer Marc Zyngier
2013-03-05 3:47 ` [PATCH 20/29] arm64: KVM: PSCI implementation Marc Zyngier
2013-03-05 3:47 ` [PATCH 21/29] arm64: KVM: Build system integration Marc Zyngier
2013-03-05 3:47 ` [PATCH 22/29] arm64: KVM: define 32bit specific registers Marc Zyngier
2013-03-18 17:03 ` Christopher Covington
2013-03-05 3:47 ` [PATCH 23/29] arm64: KVM: 32bit GP register access Marc Zyngier
2013-03-16 0:24 ` Geoff Levand
2013-03-05 3:47 ` [PATCH 24/29] arm64: KVM: 32bit conditional execution emulation Marc Zyngier
2013-03-18 17:04 ` Christopher Covington
2013-03-05 3:47 ` [PATCH 25/29] arm64: KVM: 32bit handling of coprocessor traps Marc Zyngier
2013-03-05 3:47 ` [PATCH 26/29] arm64: KVM: 32bit coprocessor access for Cortex-A57 Marc Zyngier
2013-03-05 3:47 ` [PATCH 27/29] arm64: KVM: 32bit specific register world switch Marc Zyngier
2013-03-05 3:47 ` [PATCH 28/29] arm64: KVM: 32bit guest fault injection Marc Zyngier
2013-03-18 18:45 ` Christopher Covington
2013-03-05 3:47 ` [PATCH 29/29] arm64: KVM: enable initialization of a 32bit vcpu Marc Zyngier
2013-03-18 18:56 ` Christopher Covington
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