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-rw-r--r--arch/mips/cavium-octeon/setup.c15
-rw-r--r--arch/mips/include/asm/kvm_host.h4
-rw-r--r--arch/mips/include/asm/ptrace.h32
-rw-r--r--arch/mips/include/uapi/asm/kvm.h137
-rw-r--r--arch/mips/include/uapi/asm/ptrace.h17
-rw-r--r--arch/mips/kernel/binfmt_elfn32.c11
-rw-r--r--arch/mips/kernel/binfmt_elfo32.c11
-rw-r--r--arch/mips/kernel/rtlx.c1
-rw-r--r--arch/mips/kernel/traps.c28
-rw-r--r--arch/mips/kvm/kvm_mips.c280
-rw-r--r--arch/mips/kvm/kvm_trap_emul.c50
-rw-r--r--arch/mips/mm/tlbex.c4
-rw-r--r--arch/mips/ralink/of.c2
13 files changed, 451 insertions, 141 deletions
diff --git a/arch/mips/cavium-octeon/setup.c b/arch/mips/cavium-octeon/setup.c
index b0baa299f89..01b1b3f94fe 100644
--- a/arch/mips/cavium-octeon/setup.c
+++ b/arch/mips/cavium-octeon/setup.c
@@ -428,13 +428,16 @@ static void octeon_restart(char *command)
*/
static void octeon_kill_core(void *arg)
{
- mb();
- if (octeon_is_simulation()) {
- /* The simulator needs the watchdog to stop for dead cores */
- cvmx_write_csr(CVMX_CIU_WDOGX(cvmx_get_core_num()), 0);
+ if (octeon_is_simulation())
/* A break instruction causes the simulator stop a core */
- asm volatile ("sync\nbreak");
- }
+ asm volatile ("break" ::: "memory");
+
+ local_irq_disable();
+ /* Disable watchdog on this core. */
+ cvmx_write_csr(CVMX_CIU_WDOGX(cvmx_get_core_num()), 0);
+ /* Spin in a low power mode. */
+ while (true)
+ asm volatile ("wait" ::: "memory");
}
diff --git a/arch/mips/include/asm/kvm_host.h b/arch/mips/include/asm/kvm_host.h
index 143875c6c95..4d6fa0bf130 100644
--- a/arch/mips/include/asm/kvm_host.h
+++ b/arch/mips/include/asm/kvm_host.h
@@ -496,10 +496,6 @@ struct kvm_mips_callbacks {
uint32_t cause);
int (*irq_clear) (struct kvm_vcpu *vcpu, unsigned int priority,
uint32_t cause);
- int (*vcpu_ioctl_get_regs) (struct kvm_vcpu *vcpu,
- struct kvm_regs *regs);
- int (*vcpu_ioctl_set_regs) (struct kvm_vcpu *vcpu,
- struct kvm_regs *regs);
};
extern struct kvm_mips_callbacks *kvm_mips_callbacks;
int kvm_mips_emulation_init(struct kvm_mips_callbacks **install_callbacks);
diff --git a/arch/mips/include/asm/ptrace.h b/arch/mips/include/asm/ptrace.h
index a3186f2bb8a..5e6cd094739 100644
--- a/arch/mips/include/asm/ptrace.h
+++ b/arch/mips/include/asm/ptrace.h
@@ -16,6 +16,38 @@
#include <asm/isadep.h>
#include <uapi/asm/ptrace.h>
+/*
+ * This struct defines the way the registers are stored on the stack during a
+ * system call/exception. As usual the registers k0/k1 aren't being saved.
+ */
+struct pt_regs {
+#ifdef CONFIG_32BIT
+ /* Pad bytes for argument save space on the stack. */
+ unsigned long pad0[6];
+#endif
+
+ /* Saved main processor registers. */
+ unsigned long regs[32];
+
+ /* Saved special registers. */
+ unsigned long cp0_status;
+ unsigned long hi;
+ unsigned long lo;
+#ifdef CONFIG_CPU_HAS_SMARTMIPS
+ unsigned long acx;
+#endif
+ unsigned long cp0_badvaddr;
+ unsigned long cp0_cause;
+ unsigned long cp0_epc;
+#ifdef CONFIG_MIPS_MT_SMTC
+ unsigned long cp0_tcstatus;
+#endif /* CONFIG_MIPS_MT_SMTC */
+#ifdef CONFIG_CPU_CAVIUM_OCTEON
+ unsigned long long mpl[3]; /* MTM{0,1,2} */
+ unsigned long long mtp[3]; /* MTP{0,1,2} */
+#endif
+} __aligned(8);
+
struct task_struct;
extern int ptrace_getregs(struct task_struct *child, __s64 __user *data);
diff --git a/arch/mips/include/uapi/asm/kvm.h b/arch/mips/include/uapi/asm/kvm.h
index 85789eacbf1..3f424f5217d 100644
--- a/arch/mips/include/uapi/asm/kvm.h
+++ b/arch/mips/include/uapi/asm/kvm.h
@@ -1,55 +1,138 @@
/*
-* This file is subject to the terms and conditions of the GNU General Public
-* License. See the file "COPYING" in the main directory of this archive
-* for more details.
-*
-* Copyright (C) 2012 MIPS Technologies, Inc. All rights reserved.
-* Authors: Sanjay Lal <sanjayl@kymasys.com>
-*/
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2012 MIPS Technologies, Inc. All rights reserved.
+ * Copyright (C) 2013 Cavium, Inc.
+ * Authors: Sanjay Lal <sanjayl@kymasys.com>
+ */
#ifndef __LINUX_KVM_MIPS_H
#define __LINUX_KVM_MIPS_H
#include <linux/types.h>
-#define __KVM_MIPS
-
-#define N_MIPS_COPROC_REGS 32
-#define N_MIPS_COPROC_SEL 8
+/*
+ * KVM MIPS specific structures and definitions.
+ *
+ * Some parts derived from the x86 version of this file.
+ */
-/* for KVM_GET_REGS and KVM_SET_REGS */
+/*
+ * for KVM_GET_REGS and KVM_SET_REGS
+ *
+ * If Config[AT] is zero (32-bit CPU), the register contents are
+ * stored in the lower 32-bits of the struct kvm_regs fields and sign
+ * extended to 64-bits.
+ */
struct kvm_regs {
- __u32 gprs[32];
- __u32 hi;
- __u32 lo;
- __u32 pc;
-
- __u32 cp0reg[N_MIPS_COPROC_REGS][N_MIPS_COPROC_SEL];
-};
-
-/* for KVM_GET_SREGS and KVM_SET_SREGS */
-struct kvm_sregs {
+ /* out (KVM_GET_REGS) / in (KVM_SET_REGS) */
+ __u64 gpr[32];
+ __u64 hi;
+ __u64 lo;
+ __u64 pc;
};
-/* for KVM_GET_FPU and KVM_SET_FPU */
+/*
+ * for KVM_GET_FPU and KVM_SET_FPU
+ *
+ * If Status[FR] is zero (32-bit FPU), the upper 32-bits of the FPRs
+ * are zero filled.
+ */
struct kvm_fpu {
+ __u64 fpr[32];
+ __u32 fir;
+ __u32 fccr;
+ __u32 fexr;
+ __u32 fenr;
+ __u32 fcsr;
+ __u32 pad;
};
+
+/*
+ * For MIPS, we use KVM_SET_ONE_REG and KVM_GET_ONE_REG to access CP0
+ * registers. The id field is broken down as follows:
+ *
+ * bits[2..0] - Register 'sel' index.
+ * bits[7..3] - Register 'rd' index.
+ * bits[15..8] - Must be zero.
+ * bits[63..16] - 1 -> CP0 registers.
+ *
+ * Other sets registers may be added in the future. Each set would
+ * have its own identifier in bits[63..16].
+ *
+ * The addr field of struct kvm_one_reg must point to an aligned
+ * 64-bit wide location. For registers that are narrower than
+ * 64-bits, the value is stored in the low order bits of the location,
+ * and sign extended to 64-bits.
+ *
+ * The registers defined in struct kvm_regs are also accessible, the
+ * id values for these are below.
+ */
+
+#define KVM_REG_MIPS_R0 0
+#define KVM_REG_MIPS_R1 1
+#define KVM_REG_MIPS_R2 2
+#define KVM_REG_MIPS_R3 3
+#define KVM_REG_MIPS_R4 4
+#define KVM_REG_MIPS_R5 5
+#define KVM_REG_MIPS_R6 6
+#define KVM_REG_MIPS_R7 7
+#define KVM_REG_MIPS_R8 8
+#define KVM_REG_MIPS_R9 9
+#define KVM_REG_MIPS_R10 10
+#define KVM_REG_MIPS_R11 11
+#define KVM_REG_MIPS_R12 12
+#define KVM_REG_MIPS_R13 13
+#define KVM_REG_MIPS_R14 14
+#define KVM_REG_MIPS_R15 15
+#define KVM_REG_MIPS_R16 16
+#define KVM_REG_MIPS_R17 17
+#define KVM_REG_MIPS_R18 18
+#define KVM_REG_MIPS_R19 19
+#define KVM_REG_MIPS_R20 20
+#define KVM_REG_MIPS_R21 21
+#define KVM_REG_MIPS_R22 22
+#define KVM_REG_MIPS_R23 23
+#define KVM_REG_MIPS_R24 24
+#define KVM_REG_MIPS_R25 25
+#define KVM_REG_MIPS_R26 26
+#define KVM_REG_MIPS_R27 27
+#define KVM_REG_MIPS_R28 28
+#define KVM_REG_MIPS_R29 29
+#define KVM_REG_MIPS_R30 30
+#define KVM_REG_MIPS_R31 31
+
+#define KVM_REG_MIPS_HI 32
+#define KVM_REG_MIPS_LO 33
+#define KVM_REG_MIPS_PC 34
+
+/*
+ * KVM MIPS specific structures and definitions
+ *
+ */
struct kvm_debug_exit_arch {
+ __u64 epc;
};
/* for KVM_SET_GUEST_DEBUG */
struct kvm_guest_debug_arch {
};
+/* definition of registers in kvm_run */
+struct kvm_sync_regs {
+};
+
+/* dummy definition */
+struct kvm_sregs {
+};
+
struct kvm_mips_interrupt {
/* in */
__u32 cpu;
__u32 irq;
};
-/* definition of registers in kvm_run */
-struct kvm_sync_regs {
-};
-
#endif /* __LINUX_KVM_MIPS_H */
diff --git a/arch/mips/include/uapi/asm/ptrace.h b/arch/mips/include/uapi/asm/ptrace.h
index 4d58d846870..b26f7e31727 100644
--- a/arch/mips/include/uapi/asm/ptrace.h
+++ b/arch/mips/include/uapi/asm/ptrace.h
@@ -22,16 +22,12 @@
#define DSP_CONTROL 77
#define ACX 78
+#ifndef __KERNEL__
/*
* This struct defines the way the registers are stored on the stack during a
* system call/exception. As usual the registers k0/k1 aren't being saved.
*/
struct pt_regs {
-#ifdef CONFIG_32BIT
- /* Pad bytes for argument save space on the stack. */
- unsigned long pad0[6];
-#endif
-
/* Saved main processor registers. */
unsigned long regs[32];
@@ -39,20 +35,11 @@ struct pt_regs {
unsigned long cp0_status;
unsigned long hi;
unsigned long lo;
-#ifdef CONFIG_CPU_HAS_SMARTMIPS
- unsigned long acx;
-#endif
unsigned long cp0_badvaddr;
unsigned long cp0_cause;
unsigned long cp0_epc;
-#ifdef CONFIG_MIPS_MT_SMTC
- unsigned long cp0_tcstatus;
-#endif /* CONFIG_MIPS_MT_SMTC */
-#ifdef CONFIG_CPU_CAVIUM_OCTEON
- unsigned long long mpl[3]; /* MTM{0,1,2} */
- unsigned long long mtp[3]; /* MTP{0,1,2} */
-#endif
} __attribute__ ((aligned (8)));
+#endif /* __KERNEL__ */
/* Arbitrarily choose the same ptrace numbers as used by the Sparc code. */
#define PTRACE_GETREGS 12
diff --git a/arch/mips/kernel/binfmt_elfn32.c b/arch/mips/kernel/binfmt_elfn32.c
index e06f777e9c4..1188e00bb12 100644
--- a/arch/mips/kernel/binfmt_elfn32.c
+++ b/arch/mips/kernel/binfmt_elfn32.c
@@ -119,4 +119,15 @@ MODULE_AUTHOR("Ralf Baechle (ralf@linux-mips.org)");
#undef TASK_SIZE
#define TASK_SIZE TASK_SIZE32
+#undef cputime_to_timeval
+#define cputime_to_timeval cputime_to_compat_timeval
+static __inline__ void
+cputime_to_compat_timeval(const cputime_t cputime, struct compat_timeval *value)
+{
+ unsigned long jiffies = cputime_to_jiffies(cputime);
+
+ value->tv_usec = (jiffies % HZ) * (1000000L / HZ);
+ value->tv_sec = jiffies / HZ;
+}
+
#include "../../../fs/binfmt_elf.c"
diff --git a/arch/mips/kernel/binfmt_elfo32.c b/arch/mips/kernel/binfmt_elfo32.c
index 97c5a1668e5..202e581e609 100644
--- a/arch/mips/kernel/binfmt_elfo32.c
+++ b/arch/mips/kernel/binfmt_elfo32.c
@@ -162,4 +162,15 @@ MODULE_AUTHOR("Ralf Baechle (ralf@linux-mips.org)");
#undef TASK_SIZE
#define TASK_SIZE TASK_SIZE32
+#undef cputime_to_timeval
+#define cputime_to_timeval cputime_to_compat_timeval
+static __inline__ void
+cputime_to_compat_timeval(const cputime_t cputime, struct compat_timeval *value)
+{
+ unsigned long jiffies = cputime_to_jiffies(cputime);
+
+ value->tv_usec = (jiffies % HZ) * (1000000L / HZ);
+ value->tv_sec = jiffies / HZ;
+}
+
#include "../../../fs/binfmt_elf.c"
diff --git a/arch/mips/kernel/rtlx.c b/arch/mips/kernel/rtlx.c
index 93c070b41b0..6fa198db899 100644
--- a/arch/mips/kernel/rtlx.c
+++ b/arch/mips/kernel/rtlx.c
@@ -40,6 +40,7 @@
#include <asm/processor.h>
#include <asm/vpe.h>
#include <asm/rtlx.h>
+#include <asm/setup.h>
static struct rtlx_info *rtlx;
static int major;
diff --git a/arch/mips/kernel/traps.c b/arch/mips/kernel/traps.c
index e3be67012d7..a75ae40184a 100644
--- a/arch/mips/kernel/traps.c
+++ b/arch/mips/kernel/traps.c
@@ -897,22 +897,24 @@ out_sigsegv:
asmlinkage void do_tr(struct pt_regs *regs)
{
- unsigned int opcode, tcode = 0;
+ u32 opcode, tcode = 0;
u16 instr[2];
- unsigned long epc = exception_epc(regs);
+ unsigned long epc = msk_isa16_mode(exception_epc(regs));
- if ((__get_user(instr[0], (u16 __user *)msk_isa16_mode(epc))) ||
- (__get_user(instr[1], (u16 __user *)msk_isa16_mode(epc + 2))))
+ if (get_isa16_mode(regs->cp0_epc)) {
+ if (__get_user(instr[0], (u16 __user *)(epc + 0)) ||
+ __get_user(instr[1], (u16 __user *)(epc + 2)))
goto out_sigsegv;
- opcode = (instr[0] << 16) | instr[1];
-
- /* Immediate versions don't provide a code. */
- if (!(opcode & OPCODE)) {
- if (get_isa16_mode(regs->cp0_epc))
- /* microMIPS */
- tcode = (opcode >> 12) & 0x1f;
- else
- tcode = ((opcode >> 6) & ((1 << 10) - 1));
+ opcode = (instr[0] << 16) | instr[1];
+ /* Immediate versions don't provide a code. */
+ if (!(opcode & OPCODE))
+ tcode = (opcode >> 12) & ((1 << 4) - 1);
+ } else {
+ if (__get_user(opcode, (u32 __user *)epc))
+ goto out_sigsegv;
+ /* Immediate versions don't provide a code. */
+ if (!(opcode & OPCODE))
+ tcode = (opcode >> 6) & ((1 << 10) - 1);
}
do_trap_or_bp(regs, tcode, "Trap");
diff --git a/arch/mips/kvm/kvm_mips.c b/arch/mips/kvm/kvm_mips.c
index e0dad028979..d934b017f47 100644
--- a/arch/mips/kvm/kvm_mips.c
+++ b/arch/mips/kvm/kvm_mips.c
@@ -195,7 +195,7 @@ void kvm_arch_destroy_vm(struct kvm *kvm)
long
kvm_arch_dev_ioctl(struct file *filp, unsigned int ioctl, unsigned long arg)
{
- return -EINVAL;
+ return -ENOIOCTLCMD;
}
void kvm_arch_free_memslot(struct kvm_memory_slot *free,
@@ -401,7 +401,7 @@ int
kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu,
struct kvm_guest_debug *dbg)
{
- return -EINVAL;
+ return -ENOIOCTLCMD;
}
int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *run)
@@ -475,14 +475,223 @@ int
kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu *vcpu,
struct kvm_mp_state *mp_state)
{
- return -EINVAL;
+ return -ENOIOCTLCMD;
}
int
kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu,
struct kvm_mp_state *mp_state)
{
- return -EINVAL;
+ return -ENOIOCTLCMD;
+}
+
+#define KVM_REG_MIPS_CP0_INDEX (0x10000 + 8 * 0 + 0)
+#define KVM_REG_MIPS_CP0_ENTRYLO0 (0x10000 + 8 * 2 + 0)
+#define KVM_REG_MIPS_CP0_ENTRYLO1 (0x10000 + 8 * 3 + 0)
+#define KVM_REG_MIPS_CP0_CONTEXT (0x10000 + 8 * 4 + 0)
+#define KVM_REG_MIPS_CP0_USERLOCAL (0x10000 + 8 * 4 + 2)
+#define KVM_REG_MIPS_CP0_PAGEMASK (0x10000 + 8 * 5 + 0)
+#define KVM_REG_MIPS_CP0_PAGEGRAIN (0x10000 + 8 * 5 + 1)
+#define KVM_REG_MIPS_CP0_WIRED (0x10000 + 8 * 6 + 0)
+#define KVM_REG_MIPS_CP0_HWRENA (0x10000 + 8 * 7 + 0)
+#define KVM_REG_MIPS_CP0_BADVADDR (0x10000 + 8 * 8 + 0)
+#define KVM_REG_MIPS_CP0_COUNT (0x10000 + 8 * 9 + 0)
+#define KVM_REG_MIPS_CP0_ENTRYHI (0x10000 + 8 * 10 + 0)
+#define KVM_REG_MIPS_CP0_COMPARE (0x10000 + 8 * 11 + 0)
+#define KVM_REG_MIPS_CP0_STATUS (0x10000 + 8 * 12 + 0)
+#define KVM_REG_MIPS_CP0_CAUSE (0x10000 + 8 * 13 + 0)
+#define KVM_REG_MIPS_CP0_EBASE (0x10000 + 8 * 15 + 1)
+#define KVM_REG_MIPS_CP0_CONFIG (0x10000 + 8 * 16 + 0)
+#define KVM_REG_MIPS_CP0_CONFIG1 (0x10000 + 8 * 16 + 1)
+#define KVM_REG_MIPS_CP0_CONFIG2 (0x10000 + 8 * 16 + 2)
+#define KVM_REG_MIPS_CP0_CONFIG3 (0x10000 + 8 * 16 + 3)
+#define KVM_REG_MIPS_CP0_CONFIG7 (0x10000 + 8 * 16 + 7)
+#define KVM_REG_MIPS_CP0_XCONTEXT (0x10000 + 8 * 20 + 0)
+#define KVM_REG_MIPS_CP0_ERROREPC (0x10000 + 8 * 30 + 0)
+
+static u64 kvm_mips_get_one_regs[] = {
+ KVM_REG_MIPS_R0,
+ KVM_REG_MIPS_R1,
+ KVM_REG_MIPS_R2,
+ KVM_REG_MIPS_R3,
+ KVM_REG_MIPS_R4,
+ KVM_REG_MIPS_R5,
+ KVM_REG_MIPS_R6,
+ KVM_REG_MIPS_R7,
+ KVM_REG_MIPS_R8,
+ KVM_REG_MIPS_R9,
+ KVM_REG_MIPS_R10,
+ KVM_REG_MIPS_R11,
+ KVM_REG_MIPS_R12,
+ KVM_REG_MIPS_R13,
+ KVM_REG_MIPS_R14,
+ KVM_REG_MIPS_R15,
+ KVM_REG_MIPS_R16,
+ KVM_REG_MIPS_R17,
+ KVM_REG_MIPS_R18,
+ KVM_REG_MIPS_R19,
+ KVM_REG_MIPS_R20,
+ KVM_REG_MIPS_R21,
+ KVM_REG_MIPS_R22,
+ KVM_REG_MIPS_R23,
+ KVM_REG_MIPS_R24,
+ KVM_REG_MIPS_R25,
+ KVM_REG_MIPS_R26,
+ KVM_REG_MIPS_R27,
+ KVM_REG_MIPS_R28,
+ KVM_REG_MIPS_R29,
+ KVM_REG_MIPS_R30,
+ KVM_REG_MIPS_R31,
+
+ KVM_REG_MIPS_HI,
+ KVM_REG_MIPS_LO,
+ KVM_REG_MIPS_PC,
+
+ KVM_REG_MIPS_CP0_INDEX,
+ KVM_REG_MIPS_CP0_CONTEXT,
+ KVM_REG_MIPS_CP0_PAGEMASK,
+ KVM_REG_MIPS_CP0_WIRED,
+ KVM_REG_MIPS_CP0_BADVADDR,
+ KVM_REG_MIPS_CP0_ENTRYHI,
+ KVM_REG_MIPS_CP0_STATUS,
+ KVM_REG_MIPS_CP0_CAUSE,
+ /* EPC set via kvm_regs, et al. */
+ KVM_REG_MIPS_CP0_CONFIG,
+ KVM_REG_MIPS_CP0_CONFIG1,
+ KVM_REG_MIPS_CP0_CONFIG2,
+ KVM_REG_MIPS_CP0_CONFIG3,
+ KVM_REG_MIPS_CP0_CONFIG7,
+ KVM_REG_MIPS_CP0_ERROREPC
+};
+
+static int kvm_mips_get_reg(struct kvm_vcpu *vcpu,
+ const struct kvm_one_reg *reg)
+{
+ u64 __user *uaddr = (u64 __user *)(long)reg->addr;
+
+ struct mips_coproc *cop0 = vcpu->arch.cop0;
+ s64 v;
+
+ switch (reg->id) {
+ case KVM_REG_MIPS_R0 ... KVM_REG_MIPS_R31:
+ v = (long)vcpu->arch.gprs[reg->id - KVM_REG_MIPS_R0];
+ break;
+ case KVM_REG_MIPS_HI:
+ v = (long)vcpu->arch.hi;
+ break;
+ case KVM_REG_MIPS_LO:
+ v = (long)vcpu->arch.lo;
+ break;
+ case KVM_REG_MIPS_PC:
+ v = (long)vcpu->arch.pc;
+ break;
+
+ case KVM_REG_MIPS_CP0_INDEX:
+ v = (long)kvm_read_c0_guest_index(cop0);
+ break;
+ case KVM_REG_MIPS_CP0_CONTEXT:
+ v = (long)kvm_read_c0_guest_context(cop0);
+ break;
+ case KVM_REG_MIPS_CP0_PAGEMASK:
+ v = (long)kvm_read_c0_guest_pagemask(cop0);
+ break;
+ case KVM_REG_MIPS_CP0_WIRED:
+ v = (long)kvm_read_c0_guest_wired(cop0);
+ break;
+ case KVM_REG_MIPS_CP0_BADVADDR:
+ v = (long)kvm_read_c0_guest_badvaddr(cop0);
+ break;
+ case KVM_REG_MIPS_CP0_ENTRYHI:
+ v = (long)kvm_read_c0_guest_entryhi(cop0);
+ break;
+ case KVM_REG_MIPS_CP0_STATUS:
+ v = (long)kvm_read_c0_guest_status(cop0);
+ break;
+ case KVM_REG_MIPS_CP0_CAUSE:
+ v = (long)kvm_read_c0_guest_cause(cop0);
+ break;
+ case KVM_REG_MIPS_CP0_ERROREPC:
+ v = (long)kvm_read_c0_guest_errorepc(cop0);
+ break;
+ case KVM_REG_MIPS_CP0_CONFIG:
+ v = (long)kvm_read_c0_guest_config(cop0);
+ break;
+ case KVM_REG_MIPS_CP0_CONFIG1:
+ v = (long)kvm_read_c0_guest_config1(cop0);
+ break;
+ case KVM_REG_MIPS_CP0_CONFIG2:
+ v = (long)kvm_read_c0_guest_config2(cop0);
+ break;
+ case KVM_REG_MIPS_CP0_CONFIG3:
+ v = (long)kvm_read_c0_guest_config3(cop0);
+ break;
+ case KVM_REG_MIPS_CP0_CONFIG7:
+ v = (long)kvm_read_c0_guest_config7(cop0);
+ break;
+ default:
+ return -EINVAL;
+ }
+ return put_user(v, uaddr);
+}
+
+static int kvm_mips_set_reg(struct kvm_vcpu *vcpu,
+ const struct kvm_one_reg *reg)
+{
+ u64 __user *uaddr = (u64 __user *)(long)reg->addr;
+ struct mips_coproc *cop0 = vcpu->arch.cop0;
+ u64 v;
+
+ if (get_user(v, uaddr) != 0)
+ return -EFAULT;
+
+ switch (reg->id) {
+ case KVM_REG_MIPS_R0:
+ /* Silently ignore requests to set $0 */
+ break;
+ case KVM_REG_MIPS_R1 ... KVM_REG_MIPS_R31:
+ vcpu->arch.gprs[reg->id - KVM_REG_MIPS_R0] = v;
+ break;
+ case KVM_REG_MIPS_HI:
+ vcpu->arch.hi = v;
+ break;
+ case KVM_REG_MIPS_LO:
+ vcpu->arch.lo = v;
+ break;
+ case KVM_REG_MIPS_PC:
+ vcpu->arch.pc = v;
+ break;
+
+ case KVM_REG_MIPS_CP0_INDEX:
+ kvm_write_c0_guest_index(cop0, v);
+ break;
+ case KVM_REG_MIPS_CP0_CONTEXT:
+ kvm_write_c0_guest_context(cop0, v);
+ break;
+ case KVM_REG_MIPS_CP0_PAGEMASK:
+ kvm_write_c0_guest_pagemask(cop0, v);
+ break;
+ case KVM_REG_MIPS_CP0_WIRED:
+ kvm_write_c0_guest_wired(cop0, v);
+ break;
+ case KVM_REG_MIPS_CP0_BADVADDR:
+ kvm_write_c0_guest_badvaddr(cop0, v);
+ break;
+ case KVM_REG_MIPS_CP0_ENTRYHI:
+ kvm_write_c0_guest_entryhi(cop0, v);
+ break;
+ case KVM_REG_MIPS_CP0_STATUS:
+ kvm_write_c0_guest_status(cop0, v);
+ break;
+ case KVM_REG_MIPS_CP0_CAUSE:
+ kvm_write_c0_guest_cause(cop0, v);
+ break;
+ case KVM_REG_MIPS_CP0_ERROREPC:
+ kvm_write_c0_guest_errorepc(cop0, v);
+ break;
+ default:
+ return -EINVAL;
+ }
+ return 0;
}
long
@@ -491,9 +700,38 @@ kvm_arch_vcpu_ioctl(struct file *filp, unsigned int ioctl, unsigned long arg)
struct kvm_vcpu *vcpu = filp->private_data;
void __user *argp = (void __user *)arg;
long r;
- int intr;
switch (ioctl) {
+ case KVM_SET_ONE_REG:
+ case KVM_GET_ONE_REG: {
+ struct kvm_one_reg reg;
+ if (copy_from_user(&reg, argp, sizeof(reg)))
+ return -EFAULT;
+ if (ioctl == KVM_SET_ONE_REG)
+ return kvm_mips_set_reg(vcpu, &reg);
+ else
+ return kvm_mips_get_reg(vcpu, &reg);
+ }
+ case KVM_GET_REG_LIST: {
+ struct kvm_reg_list __user *user_list = argp;
+ u64 __user *reg_dest;
+ struct kvm_reg_list reg_list;
+ unsigned n;
+
+ if (copy_from_user(&reg_list, user_list, sizeof(reg_list)))
+ return -EFAULT;
+ n = reg_list.n;
+ reg_list.n = ARRAY_SIZE(kvm_mips_get_one_regs);
+ if (copy_to_user(user_list, &reg_list, sizeof(reg_list)))
+ return -EFAULT;
+ if (n < reg_list.n)
+ return -E2BIG;
+ reg_dest = user_list->reg;
+ if (copy_to_user(reg_dest, kvm_mips_get_one_regs,
+ sizeof(kvm_mips_get_one_regs)))
+ return -EFAULT;
+ return 0;
+ }
case KVM_NMI:
/* Treat the NMI as a CPU reset */
r = kvm_mips_reset_vcpu(vcpu);
@@ -505,8 +743,6 @@ kvm_arch_vcpu_ioctl(struct file *filp, unsigned int ioctl, unsigned long arg)
if (copy_from_user(&irq, argp, sizeof(irq)))
goto out;
- intr = (int)irq.irq;
-
kvm_debug("[%d] %s: irq: %d\n", vcpu->vcpu_id, __func__,
irq.irq);
@@ -514,7 +750,7 @@ kvm_arch_vcpu_ioctl(struct file *filp, unsigned int ioctl, unsigned long arg)
break;
}
default:
- r = -EINVAL;
+ r = -ENOIOCTLCMD;
}
out:
@@ -565,7 +801,7 @@ long kvm_arch_vm_ioctl(struct file *filp, unsigned int ioctl, unsigned long arg)
switch (ioctl) {
default:
- r = -EINVAL;
+ r = -ENOIOCTLCMD;
}
return r;
@@ -593,13 +829,13 @@ void kvm_arch_exit(void)
int
kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs)
{
- return -ENOTSUPP;
+ return -ENOIOCTLCMD;
}
int
kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs)
{
- return -ENOTSUPP;
+ return -ENOIOCTLCMD;
}
int kvm_arch_vcpu_postcreate(struct kvm_vcpu *vcpu)
@@ -609,12 +845,12 @@ int kvm_arch_vcpu_postcreate(struct kvm_vcpu *vcpu)
int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu)
{
- return -ENOTSUPP;
+ return -ENOIOCTLCMD;
}
int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu)
{
- return -ENOTSUPP;
+ return -ENOIOCTLCMD;
}
int kvm_arch_vcpu_fault(struct kvm_vcpu *vcpu, struct vm_fault *vmf)
@@ -627,6 +863,9 @@ int kvm_dev_ioctl_check_extension(long ext)
int r;
switch (ext) {
+ case KVM_CAP_ONE_REG:
+ r = 1;
+ break;
case KVM_CAP_COALESCED_MMIO:
r = KVM_COALESCED_MMIO_PAGE_OFFSET;
break;
@@ -635,7 +874,6 @@ int kvm_dev_ioctl_check_extension(long ext)
break;
}
return r;
-
}
int kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu)
@@ -677,28 +915,28 @@ int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs)
{
int i;
- for (i = 0; i < 32; i++)
- vcpu->arch.gprs[i] = regs->gprs[i];
-
+ for (i = 1; i < ARRAY_SIZE(vcpu->arch.gprs); i++)
+ vcpu->arch.gprs[i] = regs->gpr[i];
+ vcpu->arch.gprs[0] = 0; /* zero is special, and cannot be set. */
vcpu->arch.hi = regs->hi;
vcpu->arch.lo = regs->lo;
vcpu->arch.pc = regs->pc;
- return kvm_mips_callbacks->vcpu_ioctl_set_regs(vcpu, regs);
+ return 0;
}
int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs)
{
int i;
- for (i = 0; i < 32; i++)
- regs->gprs[i] = vcpu->arch.gprs[i];
+ for (i = 0; i < ARRAY_SIZE(vcpu->arch.gprs); i++)
+ regs->gpr[i] = vcpu->arch.gprs[i];
regs->hi = vcpu->arch.hi;
regs->lo = vcpu->arch.lo;
regs->pc = vcpu->arch.pc;
- return kvm_mips_callbacks->vcpu_ioctl_get_regs(vcpu, regs);
+ return 0;
}
void kvm_mips_comparecount_func(unsigned long data)
diff --git a/arch/mips/kvm/kvm_trap_emul.c b/arch/mips/kvm/kvm_trap_emul.c
index 466aeef044b..30d725321db 100644
--- a/arch/mips/kvm/kvm_trap_emul.c
+++ b/arch/mips/kvm/kvm_trap_emul.c
@@ -345,54 +345,6 @@ static int kvm_trap_emul_handle_break(struct kvm_vcpu *vcpu)
return ret;
}
-static int
-kvm_trap_emul_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs)
-{
- struct mips_coproc *cop0 = vcpu->arch.cop0;
-
- kvm_write_c0_guest_index(cop0, regs->cp0reg[MIPS_CP0_TLB_INDEX][0]);
- kvm_write_c0_guest_context(cop0, regs->cp0reg[MIPS_CP0_TLB_CONTEXT][0]);
- kvm_write_c0_guest_badvaddr(cop0, regs->cp0reg[MIPS_CP0_BAD_VADDR][0]);
- kvm_write_c0_guest_entryhi(cop0, regs->cp0reg[MIPS_CP0_TLB_HI][0]);
- kvm_write_c0_guest_epc(cop0, regs->cp0reg[MIPS_CP0_EXC_PC][0]);
-
- kvm_write_c0_guest_status(cop0, regs->cp0reg[MIPS_CP0_STATUS][0]);
- kvm_write_c0_guest_cause(cop0, regs->cp0reg[MIPS_CP0_CAUSE][0]);
- kvm_write_c0_guest_pagemask(cop0,
- regs->cp0reg[MIPS_CP0_TLB_PG_MASK][0]);
- kvm_write_c0_guest_wired(cop0, regs->cp0reg[MIPS_CP0_TLB_WIRED][0]);
- kvm_write_c0_guest_errorepc(cop0, regs->cp0reg[MIPS_CP0_ERROR_PC][0]);
-
- return 0;
-}
-
-static int
-kvm_trap_emul_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs)
-{
- struct mips_coproc *cop0 = vcpu->arch.cop0;
-
- regs->cp0reg[MIPS_CP0_TLB_INDEX][0] = kvm_read_c0_guest_index(cop0);
- regs->cp0reg[MIPS_CP0_TLB_CONTEXT][0] = kvm_read_c0_guest_context(cop0);
- regs->cp0reg[MIPS_CP0_BAD_VADDR][0] = kvm_read_c0_guest_badvaddr(cop0);
- regs->cp0reg[MIPS_CP0_TLB_HI][0] = kvm_read_c0_guest_entryhi(cop0);
- regs->cp0reg[MIPS_CP0_EXC_PC][0] = kvm_read_c0_guest_epc(cop0);
-
- regs->cp0reg[MIPS_CP0_STATUS][0] = kvm_read_c0_guest_status(cop0);
- regs->cp0reg[MIPS_CP0_CAUSE][0] = kvm_read_c0_guest_cause(cop0);
- regs->cp0reg[MIPS_CP0_TLB_PG_MASK][0] =
- kvm_read_c0_guest_pagemask(cop0);
- regs->cp0reg[MIPS_CP0_TLB_WIRED][0] = kvm_read_c0_guest_wired(cop0);
- regs->cp0reg[MIPS_CP0_ERROR_PC][0] = kvm_read_c0_guest_errorepc(cop0);
-
- regs->cp0reg[MIPS_CP0_CONFIG][0] = kvm_read_c0_guest_config(cop0);
- regs->cp0reg[MIPS_CP0_CONFIG][1] = kvm_read_c0_guest_config1(cop0);
- regs->cp0reg[MIPS_CP0_CONFIG][2] = kvm_read_c0_guest_config2(cop0);
- regs->cp0reg[MIPS_CP0_CONFIG][3] = kvm_read_c0_guest_config3(cop0);
- regs->cp0reg[MIPS_CP0_CONFIG][7] = kvm_read_c0_guest_config7(cop0);
-
- return 0;
-}
-
static int kvm_trap_emul_vm_init(struct kvm *kvm)
{
return 0;
@@ -471,8 +423,6 @@ static struct kvm_mips_callbacks kvm_trap_emul_callbacks = {
.dequeue_io_int = kvm_mips_dequeue_io_int_cb,
.irq_deliver = kvm_mips_irq_deliver_cb,
.irq_clear = kvm_mips_irq_clear_cb,
- .vcpu_ioctl_get_regs = kvm_trap_emul_ioctl_get_regs,
- .vcpu_ioctl_set_regs = kvm_trap_emul_ioctl_set_regs,
};
int kvm_mips_emulation_init(struct kvm_mips_callbacks **install_callbacks)
diff --git a/arch/mips/mm/tlbex.c b/arch/mips/mm/tlbex.c
index ce9818eef7d..afeef93f81a 100644
--- a/arch/mips/mm/tlbex.c
+++ b/arch/mips/mm/tlbex.c
@@ -301,10 +301,6 @@ static u32 tlb_handler[128] __cpuinitdata;
static struct uasm_label labels[128] __cpuinitdata;
static struct uasm_reloc relocs[128] __cpuinitdata;
-#ifdef CONFIG_64BIT
-static int check_for_high_segbits __cpuinitdata;
-#endif
-
static int check_for_high_segbits __cpuinitdata;
static unsigned int kscratch_used_mask __cpuinitdata;
diff --git a/arch/mips/ralink/of.c b/arch/mips/ralink/of.c
index fb1569580de..6b5f3406f41 100644
--- a/arch/mips/ralink/of.c
+++ b/arch/mips/ralink/of.c
@@ -88,7 +88,7 @@ void __init plat_mem_setup(void)
__dt_setup_arch(&__dtb_start);
if (soc_info.mem_size)
- add_memory_region(soc_info.mem_base, soc_info.mem_size,
+ add_memory_region(soc_info.mem_base, soc_info.mem_size * SZ_1M,
BOOT_MEM_RAM);
else
detect_memory_region(soc_info.mem_base,
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-24 21:27:24 +0000