qemu-e2k/target-ppc/kvm_ppc.h

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/*
* Copyright 2008 IBM Corporation.
* Authors: Hollis Blanchard <hollisb@us.ibm.com>
*
* This work is licensed under the GNU GPL license version 2 or later.
*
*/
#ifndef __KVM_PPC_H__
#define __KVM_PPC_H__
#define TYPE_HOST_POWERPC_CPU "host-" TYPE_POWERPC_CPU
void kvmppc_init(void);
#ifdef CONFIG_KVM
uint32_t kvmppc_get_tbfreq(void);
uint64_t kvmppc_get_clockfreq(void);
uint32_t kvmppc_get_vmx(void);
uint32_t kvmppc_get_dfp(void);
bool kvmppc_get_host_model(char **buf);
bool kvmppc_get_host_serial(char **buf);
int kvmppc_get_hasidle(CPUPPCState *env);
int kvmppc_get_hypercall(CPUPPCState *env, uint8_t *buf, int buf_len);
int kvmppc_set_interrupt(PowerPCCPU *cpu, int irq, int level);
void kvmppc_enable_logical_ci_hcalls(void);
void kvmppc_set_papr(PowerPCCPU *cpu);
int kvmppc_set_compat(PowerPCCPU *cpu, uint32_t cpu_version);
void kvmppc_set_mpic_proxy(PowerPCCPU *cpu, int mpic_proxy);
int kvmppc_smt_threads(void);
int kvmppc_clear_tsr_bits(PowerPCCPU *cpu, uint32_t tsr_bits);
int kvmppc_or_tsr_bits(PowerPCCPU *cpu, uint32_t tsr_bits);
int kvmppc_set_tcr(PowerPCCPU *cpu);
int kvmppc_booke_watchdog_enable(PowerPCCPU *cpu);
#ifndef CONFIG_USER_ONLY
off_t kvmppc_alloc_rma(void **rma);
bool kvmppc_spapr_use_multitce(void);
spapr_iommu: Make in-kernel TCE table optional POWER KVM supports an KVM_CAP_SPAPR_TCE capability which allows allocating TCE tables in the host kernel memory and handle H_PUT_TCE requests targeted to specific LIOBN (logical bus number) right in the host without switching to QEMU. At the moment this is used for emulated devices only and the handler only puts TCE to the table. If the in-kernel H_PUT_TCE handler finds a LIOBN and corresponding table, it will put a TCE to the table and complete hypercall execution. The user space will not be notified. Upcoming VFIO support is going to use the same sPAPRTCETable device class so KVM_CAP_SPAPR_TCE is going to be used as well. That means that TCE tables for VFIO are going to be allocated in the host as well. However VFIO operates with real IOMMU tables and simple copying of a TCE to the real hardware TCE table will not work as guest physical to host physical address translation is requited. So until the host kernel gets VFIO support for H_PUT_TCE, we better not to register VFIO's TCE in the host. This adds a place holder for KVM_CAP_SPAPR_TCE_VFIO capability. It is not in upstream yet and being discussed so now it is always false which means that in-kernel VFIO acceleration is not supported. This adds a bool @vfio_accel flag to the sPAPRTCETable device telling that sPAPRTCETable should not try allocating TCE table in the host kernel for VFIO. The flag is false now as at the moment there is no VFIO. This adds an vfio_accel parameter to spapr_tce_new_table(), the semantic is the same. Since there is only emulated PCI and VIO now, the flag is set to false. Upcoming VFIO support will set it to true. This is a preparation patch so no change in behaviour is expected Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru> Signed-off-by: Alexander Graf <agraf@suse.de>
2014-06-10 07:39:21 +02:00
void *kvmppc_create_spapr_tce(uint32_t liobn, uint32_t window_size, int *pfd,
bool vfio_accel);
int kvmppc_remove_spapr_tce(void *table, int pfd, uint32_t window_size);
int kvmppc_reset_htab(int shift_hint);
uint64_t kvmppc_rma_size(uint64_t current_size, unsigned int hash_shift);
#endif /* !CONFIG_USER_ONLY */
bool kvmppc_has_cap_epr(void);
int kvmppc_define_rtas_kernel_token(uint32_t token, const char *function);
bool kvmppc_has_cap_htab_fd(void);
int kvmppc_get_htab_fd(bool write);
int kvmppc_save_htab(QEMUFile *f, int fd, size_t bufsize, int64_t max_ns);
int kvmppc_load_htab_chunk(QEMUFile *f, int fd, uint32_t index,
uint16_t n_valid, uint16_t n_invalid);
uint64_t kvmppc_hash64_read_pteg(PowerPCCPU *cpu, target_ulong pte_index);
void kvmppc_hash64_free_pteg(uint64_t token);
void kvmppc_hash64_write_pte(CPUPPCState *env, target_ulong pte_index,
target_ulong pte0, target_ulong pte1);
bool kvmppc_has_cap_fixup_hcalls(void);
#else
static inline uint32_t kvmppc_get_tbfreq(void)
{
return 0;
}
static inline bool kvmppc_get_host_model(char **buf)
{
return false;
}
static inline bool kvmppc_get_host_serial(char **buf)
{
return false;
}
static inline uint64_t kvmppc_get_clockfreq(void)
{
return 0;
}
static inline uint32_t kvmppc_get_vmx(void)
{
return 0;
}
static inline uint32_t kvmppc_get_dfp(void)
{
return 0;
}
static inline int kvmppc_get_hasidle(CPUPPCState *env)
{
return 0;
}
static inline int kvmppc_get_hypercall(CPUPPCState *env, uint8_t *buf, int buf_len)
{
return -1;
}
ppc64: Rudimentary Support for extra page sizes on server CPUs More recent Power server chips (i.e. based on the 64 bit hash MMU) support more than just the traditional 4k and 16M page sizes. This can get quite complicated, because which page sizes are supported, which combinations are supported within an MMU segment and how these page sizes are encoded both in the SLB entry and the hash PTE can vary depending on the CPU model (they are not specified by the architecture). In addition the firmware or hypervisor may not permit use of certain page sizes, for various reasons. Whether various page sizes are supported on KVM, for example, depends on whether the PR or HV variant of KVM is in use, and on the page size of the memory backing the guest's RAM. This patch adds information to the CPUState and cpu defs to describe the supported page sizes and encodings. Since TCG does not yet support any extended page sizes, we just set this to NULL in the static CPU definitions, expanding this to the default 4k and 16M page sizes when we initialize the cpu state. When using KVM, however, we instead determine available page sizes using the new KVM_PPC_GET_SMMU_INFO call. For old kernels without that call, we use some defaults, with some guesswork which should do the right thing for existing HV and PR implementations. The fallback might not be correct for future versions, but that's ok, because they'll have KVM_PPC_GET_SMMU_INFO. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Alexander Graf <agraf@suse.de>
2012-06-18 21:56:25 +02:00
static inline int kvmppc_read_segment_page_sizes(uint32_t *prop, int maxcells)
{
return -1;
}
static inline int kvmppc_set_interrupt(PowerPCCPU *cpu, int irq, int level)
{
return -1;
}
static inline void kvmppc_enable_logical_ci_hcalls(void)
{
}
static inline void kvmppc_set_papr(PowerPCCPU *cpu)
{
}
static inline int kvmppc_set_compat(PowerPCCPU *cpu, uint32_t cpu_version)
{
return 0;
}
static inline void kvmppc_set_mpic_proxy(PowerPCCPU *cpu, int mpic_proxy)
{
}
static inline int kvmppc_smt_threads(void)
{
return 1;
}
static inline int kvmppc_or_tsr_bits(PowerPCCPU *cpu, uint32_t tsr_bits)
{
return 0;
}
static inline int kvmppc_clear_tsr_bits(PowerPCCPU *cpu, uint32_t tsr_bits)
{
return 0;
}
static inline int kvmppc_set_tcr(PowerPCCPU *cpu)
{
return 0;
}
static inline int kvmppc_booke_watchdog_enable(PowerPCCPU *cpu)
{
return -1;
}
#ifndef CONFIG_USER_ONLY
static inline off_t kvmppc_alloc_rma(void **rma)
{
return 0;
}
static inline bool kvmppc_spapr_use_multitce(void)
{
return false;
}
static inline void *kvmppc_create_spapr_tce(uint32_t liobn,
spapr_iommu: Make in-kernel TCE table optional POWER KVM supports an KVM_CAP_SPAPR_TCE capability which allows allocating TCE tables in the host kernel memory and handle H_PUT_TCE requests targeted to specific LIOBN (logical bus number) right in the host without switching to QEMU. At the moment this is used for emulated devices only and the handler only puts TCE to the table. If the in-kernel H_PUT_TCE handler finds a LIOBN and corresponding table, it will put a TCE to the table and complete hypercall execution. The user space will not be notified. Upcoming VFIO support is going to use the same sPAPRTCETable device class so KVM_CAP_SPAPR_TCE is going to be used as well. That means that TCE tables for VFIO are going to be allocated in the host as well. However VFIO operates with real IOMMU tables and simple copying of a TCE to the real hardware TCE table will not work as guest physical to host physical address translation is requited. So until the host kernel gets VFIO support for H_PUT_TCE, we better not to register VFIO's TCE in the host. This adds a place holder for KVM_CAP_SPAPR_TCE_VFIO capability. It is not in upstream yet and being discussed so now it is always false which means that in-kernel VFIO acceleration is not supported. This adds a bool @vfio_accel flag to the sPAPRTCETable device telling that sPAPRTCETable should not try allocating TCE table in the host kernel for VFIO. The flag is false now as at the moment there is no VFIO. This adds an vfio_accel parameter to spapr_tce_new_table(), the semantic is the same. Since there is only emulated PCI and VIO now, the flag is set to false. Upcoming VFIO support will set it to true. This is a preparation patch so no change in behaviour is expected Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru> Signed-off-by: Alexander Graf <agraf@suse.de>
2014-06-10 07:39:21 +02:00
uint32_t window_size, int *fd,
bool vfio_accel)
{
return NULL;
}
static inline int kvmppc_remove_spapr_tce(void *table, int pfd,
uint32_t nb_table)
{
return -1;
}
static inline int kvmppc_reset_htab(int shift_hint)
{
return -1;
}
static inline uint64_t kvmppc_rma_size(uint64_t current_size,
unsigned int hash_shift)
{
return ram_size;
}
static inline int kvmppc_update_sdr1(CPUPPCState *env)
{
return 0;
}
#endif /* !CONFIG_USER_ONLY */
static inline bool kvmppc_has_cap_epr(void)
{
return false;
}
static inline int kvmppc_define_rtas_kernel_token(uint32_t token,
const char *function)
{
return -1;
}
static inline bool kvmppc_has_cap_htab_fd(void)
{
return false;
}
static inline int kvmppc_get_htab_fd(bool write)
{
return -1;
}
static inline int kvmppc_save_htab(QEMUFile *f, int fd, size_t bufsize,
int64_t max_ns)
{
abort();
}
static inline int kvmppc_load_htab_chunk(QEMUFile *f, int fd, uint32_t index,
uint16_t n_valid, uint16_t n_invalid)
{
abort();
}
static inline uint64_t kvmppc_hash64_read_pteg(PowerPCCPU *cpu,
target_ulong pte_index)
{
abort();
}
static inline void kvmppc_hash64_free_pteg(uint64_t token)
{
abort();
}
static inline void kvmppc_hash64_write_pte(CPUPPCState *env,
target_ulong pte_index,
target_ulong pte0, target_ulong pte1)
{
abort();
}
static inline bool kvmppc_has_cap_fixup_hcalls(void)
{
abort();
}
#endif
#ifndef CONFIG_KVM
#define kvmppc_eieio() do { } while (0)
#else
#define kvmppc_eieio() \
do { \
if (kvm_enabled()) { \
asm volatile("eieio" : : : "memory"); \
} \
} while (0)
#endif
#ifndef KVM_INTERRUPT_SET
#define KVM_INTERRUPT_SET -1
#endif
#ifndef KVM_INTERRUPT_UNSET
#define KVM_INTERRUPT_UNSET -2
#endif
#ifndef KVM_INTERRUPT_SET_LEVEL
#define KVM_INTERRUPT_SET_LEVEL -3
#endif
#endif /* __KVM_PPC_H__ */