[Qemu-devel] [RFC v4 1/8] linux-headers: Add ARM KVM headers (not for upstream)

[Peter Maydell]

This commit adds the ARM KVM headers. This is not to go to QEMU
upstream -- the correct path there is that the KVM code will be
committed to a mainline upstream kernel, and then upstream QEMU
can do a bulk header update from the upstream kernel, which will
allow us to drop this temporary commit.

This is the result of running update-headers on Christoffer's
kvm-arm-v14-vgic-timers branch (commit 68d116f).

This commit currently also includes some non-ARM header changes
which hopefully will have made it into QEMU upstream by the time
we submit this for merging.
---
 linux-headers/asm-arm/kvm.h          |  137 ++++++++++++++++++++++++++++++++++
 linux-headers/asm-arm/kvm_para.h     |    1 +
 linux-headers/asm-generic/kvm_para.h |    4 +
 linux-headers/asm-powerpc/kvm.h      |   59 +++++++++++++++
 linux-headers/asm-powerpc/kvm_para.h |    7 +-
 linux-headers/linux/kvm.h            |   34 +++++++--
 6 files changed, 234 insertions(+), 8 deletions(-)
 create mode 100644 linux-headers/asm-arm/kvm.h
 create mode 100644 linux-headers/asm-arm/kvm_para.h
 create mode 100644 linux-headers/asm-generic/kvm_para.h

diff --git a/linux-headers/asm-arm/kvm.h b/linux-headers/asm-arm/kvm.h
new file mode 100644
index 0000000..b1c7871
--- /dev/null
+++ b/linux-headers/asm-arm/kvm.h
@@ -0,0 +1,137 @@
+/*
+ * Copyright (C) 2012 - Virtual Open Systems and Columbia University
+ * Author: Christoffer Dall <address@hidden>
+ *
+ * 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, write to the Free Software
+ * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ */
+
+#ifndef __ARM_KVM_H__
+#define __ARM_KVM_H__
+
+#include <asm/types.h>
+#include <asm/ptrace.h>
+
+#define __KVM_HAVE_GUEST_DEBUG
+#define __KVM_HAVE_IRQ_LINE
+
+#define KVM_REG_SIZE(id)                                               \
+       (1U << (((id) & KVM_REG_SIZE_MASK) >> KVM_REG_SIZE_SHIFT))
+
+struct kvm_regs {
+       struct pt_regs usr_regs;/* R0_usr - R14_usr, PC, CPSR */
+       __u32 svc_regs[3];      /* SP_svc, LR_svc, SPSR_svc */
+       __u32 abt_regs[3];      /* SP_abt, LR_abt, SPSR_abt */
+       __u32 und_regs[3];      /* SP_und, LR_und, SPSR_und */
+       __u32 irq_regs[3];      /* SP_irq, LR_irq, SPSR_irq */
+       __u32 fiq_regs[8];      /* R8_fiq - R14_fiq, SPSR_fiq */
+};
+
+/* Supported Processor Types */
+#define KVM_ARM_TARGET_CORTEX_A15      0
+#define KVM_ARM_NUM_TARGETS            1
+
+/* KVM_SET_DEVICE_ADDRESS ioctl id encoding */
+#define KVM_DEVICE_TYPE_SHIFT          0
+#define KVM_DEVICE_TYPE_MASK           (0xffff << KVM_DEVICE_TYPE_SHIFT)
+#define KVM_DEVICE_ID_SHIFT            16
+#define KVM_DEVICE_ID_MASK             (0xffff << KVM_DEVICE_ID_SHIFT)
+
+/* Supported device IDs */
+#define KVM_ARM_DEVICE_VGIC_V2         0
+
+/* Supported VGIC address types  */
+#define KVM_VGIC_V2_ADDR_TYPE_DIST     0
+#define KVM_VGIC_V2_ADDR_TYPE_CPU      1
+
+struct kvm_vcpu_init {
+       __u32 target;
+       __u32 features[7];
+};
+
+struct kvm_sregs {
+};
+
+struct kvm_fpu {
+};
+
+struct kvm_guest_debug_arch {
+};
+
+struct kvm_debug_exit_arch {
+};
+
+struct kvm_sync_regs {
+};
+
+struct kvm_arch_memory_slot {
+};
+
+/* If you need to interpret the index values, here is the key: */
+#define KVM_REG_ARM_COPROC_MASK                0x000000000FFF0000
+#define KVM_REG_ARM_COPROC_SHIFT       16
+#define KVM_REG_ARM_32_OPC2_MASK       0x0000000000000007
+#define KVM_REG_ARM_32_OPC2_SHIFT      0
+#define KVM_REG_ARM_OPC1_MASK          0x0000000000000078
+#define KVM_REG_ARM_OPC1_SHIFT         3
+#define KVM_REG_ARM_CRM_MASK           0x0000000000000780
+#define KVM_REG_ARM_CRM_SHIFT          7
+#define KVM_REG_ARM_32_CRN_MASK                0x0000000000007800
+#define KVM_REG_ARM_32_CRN_SHIFT       11
+
+/* Normal registers are mapped as coprocessor 16. */
+#define KVM_REG_ARM_CORE               (0x0010 << KVM_REG_ARM_COPROC_SHIFT)
+#define KVM_REG_ARM_CORE_REG(name)     (offsetof(struct kvm_regs, name) / 4)
+
+/* Some registers need more space to represent values. */
+#define KVM_REG_ARM_DEMUX              (0x0011 << KVM_REG_ARM_COPROC_SHIFT)
+#define KVM_REG_ARM_DEMUX_ID_MASK      0x000000000000FF00
+#define KVM_REG_ARM_DEMUX_ID_SHIFT     8
+#define KVM_REG_ARM_DEMUX_ID_CCSIDR    (0x00 << KVM_REG_ARM_DEMUX_ID_SHIFT)
+#define KVM_REG_ARM_DEMUX_VAL_MASK     0x00000000000000FF
+#define KVM_REG_ARM_DEMUX_VAL_SHIFT    0
+
+/* VFP registers: we could overload CP10 like ARM does, but that's ugly. */
+#define KVM_REG_ARM_VFP                        (0x0012 << 
KVM_REG_ARM_COPROC_SHIFT)
+#define KVM_REG_ARM_VFP_MASK           0x000000000000FFFF
+#define KVM_REG_ARM_VFP_BASE_REG       0x0
+#define KVM_REG_ARM_VFP_FPSID          0x1000
+#define KVM_REG_ARM_VFP_FPSCR          0x1001
+#define KVM_REG_ARM_VFP_MVFR1          0x1006
+#define KVM_REG_ARM_VFP_MVFR0          0x1007
+#define KVM_REG_ARM_VFP_FPEXC          0x1008
+#define KVM_REG_ARM_VFP_FPINST         0x1009
+#define KVM_REG_ARM_VFP_FPINST2                0x100A
+
+
+/* KVM_IRQ_LINE irq field index values */
+#define KVM_ARM_IRQ_TYPE_SHIFT         24
+#define KVM_ARM_IRQ_TYPE_MASK          0xff
+#define KVM_ARM_IRQ_VCPU_SHIFT         16
+#define KVM_ARM_IRQ_VCPU_MASK          0xff
+#define KVM_ARM_IRQ_NUM_SHIFT          0
+#define KVM_ARM_IRQ_NUM_MASK           0xffff
+
+/* irq_type field */
+#define KVM_ARM_IRQ_TYPE_CPU           0
+#define KVM_ARM_IRQ_TYPE_SPI           1
+#define KVM_ARM_IRQ_TYPE_PPI           2
+
+/* out-of-kernel GIC cpu interrupt injection irq_number field */
+#define KVM_ARM_IRQ_CPU_IRQ            0
+#define KVM_ARM_IRQ_CPU_FIQ            1
+
+/* Highest supported SPI, from VGIC_NR_IRQS */
+#define KVM_ARM_IRQ_GIC_MAX            127
+
+#endif /* __ARM_KVM_H__ */
diff --git a/linux-headers/asm-arm/kvm_para.h b/linux-headers/asm-arm/kvm_para.h
new file mode 100644
index 0000000..14fab8f
--- /dev/null
+++ b/linux-headers/asm-arm/kvm_para.h
@@ -0,0 +1 @@
+#include <asm-generic/kvm_para.h>
diff --git a/linux-headers/asm-generic/kvm_para.h 
b/linux-headers/asm-generic/kvm_para.h
new file mode 100644
index 0000000..486f0af
--- /dev/null
+++ b/linux-headers/asm-generic/kvm_para.h
@@ -0,0 +1,4 @@
+/*
+ * There isn't anything here, but the file must not be empty or patch
+ * will delete it.
+ */
diff --git a/linux-headers/asm-powerpc/kvm.h b/linux-headers/asm-powerpc/kvm.h
index 1bea4d8..b89ae4d 100644
--- a/linux-headers/asm-powerpc/kvm.h
+++ b/linux-headers/asm-powerpc/kvm.h
@@ -221,6 +221,12 @@ struct kvm_sregs {
 
                        __u32 dbsr;     /* KVM_SREGS_E_UPDATE_DBSR */
                        __u32 dbcr[3];
+                       /*
+                        * iac/dac registers are 64bit wide, while this API
+                        * interface provides only lower 32 bits on 64 bit
+                        * processors. ONE_REG interface is added for 64bit
+                        * iac/dac registers.
+                        */
                        __u32 iac[4];
                        __u32 dac[2];
                        __u32 dvc[2];
@@ -326,5 +332,58 @@ struct kvm_book3e_206_tlb_params {
 };
 
 #define KVM_REG_PPC_HIOR       (KVM_REG_PPC | KVM_REG_SIZE_U64 | 0x1)
+#define KVM_REG_PPC_IAC1       (KVM_REG_PPC | KVM_REG_SIZE_U64 | 0x2)
+#define KVM_REG_PPC_IAC2       (KVM_REG_PPC | KVM_REG_SIZE_U64 | 0x3)
+#define KVM_REG_PPC_IAC3       (KVM_REG_PPC | KVM_REG_SIZE_U64 | 0x4)
+#define KVM_REG_PPC_IAC4       (KVM_REG_PPC | KVM_REG_SIZE_U64 | 0x5)
+#define KVM_REG_PPC_DAC1       (KVM_REG_PPC | KVM_REG_SIZE_U64 | 0x6)
+#define KVM_REG_PPC_DAC2       (KVM_REG_PPC | KVM_REG_SIZE_U64 | 0x7)
+#define KVM_REG_PPC_DABR       (KVM_REG_PPC | KVM_REG_SIZE_U64 | 0x8)
+#define KVM_REG_PPC_DSCR       (KVM_REG_PPC | KVM_REG_SIZE_U64 | 0x9)
+#define KVM_REG_PPC_PURR       (KVM_REG_PPC | KVM_REG_SIZE_U64 | 0xa)
+#define KVM_REG_PPC_SPURR      (KVM_REG_PPC | KVM_REG_SIZE_U64 | 0xb)
+#define KVM_REG_PPC_DAR                (KVM_REG_PPC | KVM_REG_SIZE_U64 | 0xc)
+#define KVM_REG_PPC_DSISR      (KVM_REG_PPC | KVM_REG_SIZE_U32 | 0xd)
+#define KVM_REG_PPC_AMR                (KVM_REG_PPC | KVM_REG_SIZE_U64 | 0xe)
+#define KVM_REG_PPC_UAMOR      (KVM_REG_PPC | KVM_REG_SIZE_U64 | 0xf)
+
+#define KVM_REG_PPC_MMCR0      (KVM_REG_PPC | KVM_REG_SIZE_U64 | 0x10)
+#define KVM_REG_PPC_MMCR1      (KVM_REG_PPC | KVM_REG_SIZE_U64 | 0x11)
+#define KVM_REG_PPC_MMCRA      (KVM_REG_PPC | KVM_REG_SIZE_U64 | 0x12)
+
+#define KVM_REG_PPC_PMC1       (KVM_REG_PPC | KVM_REG_SIZE_U32 | 0x18)
+#define KVM_REG_PPC_PMC2       (KVM_REG_PPC | KVM_REG_SIZE_U32 | 0x19)
+#define KVM_REG_PPC_PMC3       (KVM_REG_PPC | KVM_REG_SIZE_U32 | 0x1a)
+#define KVM_REG_PPC_PMC4       (KVM_REG_PPC | KVM_REG_SIZE_U32 | 0x1b)
+#define KVM_REG_PPC_PMC5       (KVM_REG_PPC | KVM_REG_SIZE_U32 | 0x1c)
+#define KVM_REG_PPC_PMC6       (KVM_REG_PPC | KVM_REG_SIZE_U32 | 0x1d)
+#define KVM_REG_PPC_PMC7       (KVM_REG_PPC | KVM_REG_SIZE_U32 | 0x1e)
+#define KVM_REG_PPC_PMC8       (KVM_REG_PPC | KVM_REG_SIZE_U32 | 0x1f)
+
+/* 32 floating-point registers */
+#define KVM_REG_PPC_FPR0       (KVM_REG_PPC | KVM_REG_SIZE_U64 | 0x20)
+#define KVM_REG_PPC_FPR(n)     (KVM_REG_PPC_FPR0 + (n))
+#define KVM_REG_PPC_FPR31      (KVM_REG_PPC | KVM_REG_SIZE_U64 | 0x3f)
+
+/* 32 VMX/Altivec vector registers */
+#define KVM_REG_PPC_VR0                (KVM_REG_PPC | KVM_REG_SIZE_U128 | 0x40)
+#define KVM_REG_PPC_VR(n)      (KVM_REG_PPC_VR0 + (n))
+#define KVM_REG_PPC_VR31       (KVM_REG_PPC | KVM_REG_SIZE_U128 | 0x5f)
+
+/* 32 double-width FP registers for VSX */
+/* High-order halves overlap with FP regs */
+#define KVM_REG_PPC_VSR0       (KVM_REG_PPC | KVM_REG_SIZE_U128 | 0x60)
+#define KVM_REG_PPC_VSR(n)     (KVM_REG_PPC_VSR0 + (n))
+#define KVM_REG_PPC_VSR31      (KVM_REG_PPC | KVM_REG_SIZE_U128 | 0x7f)
+
+/* FP and vector status/control registers */
+#define KVM_REG_PPC_FPSCR      (KVM_REG_PPC | KVM_REG_SIZE_U64 | 0x80)
+#define KVM_REG_PPC_VSCR       (KVM_REG_PPC | KVM_REG_SIZE_U32 | 0x81)
+
+/* Virtual processor areas */
+/* For SLB & DTL, address in high (first) half, length in low half */
+#define KVM_REG_PPC_VPA_ADDR   (KVM_REG_PPC | KVM_REG_SIZE_U64 | 0x82)
+#define KVM_REG_PPC_VPA_SLB    (KVM_REG_PPC | KVM_REG_SIZE_U128 | 0x83)
+#define KVM_REG_PPC_VPA_DTL    (KVM_REG_PPC | KVM_REG_SIZE_U128 | 0x84)
 
 #endif /* __LINUX_KVM_POWERPC_H */
diff --git a/linux-headers/asm-powerpc/kvm_para.h 
b/linux-headers/asm-powerpc/kvm_para.h
index 5e04383..ed0e025 100644
--- a/linux-headers/asm-powerpc/kvm_para.h
+++ b/linux-headers/asm-powerpc/kvm_para.h
@@ -75,9 +75,10 @@ struct kvm_vcpu_arch_shared {
 };
 
 #define KVM_SC_MAGIC_R0                0x4b564d21 /* "KVM!" */
-#define HC_VENDOR_KVM          (42 << 16)
-#define HC_EV_SUCCESS          0
-#define HC_EV_UNIMPLEMENTED    12
+
+#define KVM_HCALL_TOKEN(num)     _EV_HCALL_TOKEN(EV_KVM_VENDOR_ID, num)
+
+#include <uapi/asm/epapr_hcalls.h>
 
 #define KVM_FEATURE_MAGIC_PAGE 1
 
diff --git a/linux-headers/linux/kvm.h b/linux-headers/linux/kvm.h
index 81d2feb..c819d4c 100644
--- a/linux-headers/linux/kvm.h
+++ b/linux-headers/linux/kvm.h
@@ -115,6 +115,7 @@ struct kvm_irq_level {
         * ACPI gsi notion of irq.
         * For IA-64 (APIC model) IOAPIC0: irq 0-23; IOAPIC1: irq 24-47..
         * For X86 (standard AT mode) PIC0/1: irq 0-15. IOAPIC0: 0-23..
+        * For ARM: See Documentation/virtual/kvm/api.txt
         */
        union {
                __u32 irq;
@@ -167,10 +168,15 @@ struct kvm_pit_config {
 #define KVM_EXIT_OSI              18
 #define KVM_EXIT_PAPR_HCALL      19
 #define KVM_EXIT_S390_UCONTROL   20
+#define KVM_EXIT_WATCHDOG         21
 
 /* For KVM_EXIT_INTERNAL_ERROR */
-#define KVM_INTERNAL_ERROR_EMULATION 1
-#define KVM_INTERNAL_ERROR_SIMUL_EX 2
+/* Emulate instruction failed. */
+#define KVM_INTERNAL_ERROR_EMULATION   1
+/* Encounter unexpected simultaneous exceptions. */
+#define KVM_INTERNAL_ERROR_SIMUL_EX    2
+/* Encounter unexpected vm-exit due to delivery event. */
+#define KVM_INTERNAL_ERROR_DELIVERY_EV 3
 
 /* for KVM_RUN, returned by mmap(vcpu_fd, offset=0) */
 struct kvm_run {
@@ -477,6 +483,8 @@ struct kvm_ppc_smmu_info {
        struct kvm_ppc_one_seg_page_size sps[KVM_PPC_PAGE_SIZES_MAX_SZ];
 };
 
+#define KVM_PPC_PVINFO_FLAGS_EV_IDLE   (1<<0)
+
 #define KVMIO 0xAE
 
 /* machine type bits, to be used as argument to KVM_CREATE_VM */
@@ -626,6 +634,8 @@ struct kvm_ppc_smmu_info {
 #define KVM_CAP_READONLY_MEM 81
 #endif
 #define KVM_CAP_IRQFD_RESAMPLE 82
+#define KVM_CAP_PPC_BOOKE_WATCHDOG 83
+#define KVM_CAP_SET_DEVICE_ADDR 84
 
 #ifdef KVM_CAP_IRQ_ROUTING
 
@@ -755,6 +765,11 @@ struct kvm_dirty_tlb {
 #define KVM_REG_SIZE_U512      0x0060000000000000ULL
 #define KVM_REG_SIZE_U1024     0x0070000000000000ULL
 
+struct kvm_reg_list {
+       __u64 n; /* number of regs */
+       __u64 reg[0];
+};
+
 struct kvm_one_reg {
        __u64 id;
        __u64 addr;
@@ -768,6 +783,11 @@ struct kvm_msi {
        __u8  pad[16];
 };
 
+struct kvm_device_address {
+       __u64 id;
+       __u64 addr;
+};
+
 /*
  * ioctls for VM fds
  */
@@ -848,6 +868,11 @@ struct kvm_s390_ucas_mapping {
 #define KVM_PPC_GET_SMMU_INFO    _IOR(KVMIO,  0xa6, struct kvm_ppc_smmu_info)
 /* Available with KVM_CAP_PPC_ALLOC_HTAB */
 #define KVM_PPC_ALLOCATE_HTAB    _IOWR(KVMIO, 0xa7, __u32)
+#define KVM_CREATE_SPAPR_TCE     _IOW(KVMIO,  0xa8, struct 
kvm_create_spapr_tce)
+/* Available with KVM_CAP_RMA */
+#define KVM_ALLOCATE_RMA         _IOR(KVMIO,  0xa9, struct kvm_allocate_rma)
+/* Available with KVM_CAP_SET_DEVICE_ADDR */
+#define KVM_SET_DEVICE_ADDRESS   _IOW(KVMIO,  0xaa, struct kvm_device_address)
 
 /*
  * ioctls for vcpu fds
@@ -911,9 +936,6 @@ struct kvm_s390_ucas_mapping {
 /* Available with KVM_CAP_XCRS */
 #define KVM_GET_XCRS             _IOR(KVMIO,  0xa6, struct kvm_xcrs)
 #define KVM_SET_XCRS             _IOW(KVMIO,  0xa7, struct kvm_xcrs)
-#define KVM_CREATE_SPAPR_TCE     _IOW(KVMIO,  0xa8, struct 
kvm_create_spapr_tce)
-/* Available with KVM_CAP_RMA */
-#define KVM_ALLOCATE_RMA         _IOR(KVMIO,  0xa9, struct kvm_allocate_rma)
 /* Available with KVM_CAP_SW_TLB */
 #define KVM_DIRTY_TLB            _IOW(KVMIO,  0xaa, struct kvm_dirty_tlb)
 /* Available with KVM_CAP_ONE_REG */
@@ -921,6 +943,8 @@ struct kvm_s390_ucas_mapping {
 #define KVM_SET_ONE_REG                  _IOW(KVMIO,  0xac, struct kvm_one_reg)
 /* VM is being stopped by host */
 #define KVM_KVMCLOCK_CTRL        _IO(KVMIO,   0xad)
+#define KVM_ARM_VCPU_INIT        _IOW(KVMIO,  0xae, struct kvm_vcpu_init)
+#define KVM_GET_REG_LIST         _IOWR(KVMIO, 0xb0, struct kvm_reg_list)
 
 #define KVM_DEV_ASSIGN_ENABLE_IOMMU    (1 << 0)
 #define KVM_DEV_ASSIGN_PCI_2_3         (1 << 1)
-- 
1.7.9.5