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author | Gregory Haskins <ghaskins@novell.com> | 2007-05-31 18:08:53 (GMT) |
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committer | Avi Kivity <avi@qumranet.com> | 2007-07-16 09:05:47 (GMT) |
commit | 2eeb2e94eb6232f0895da696c10e6636093ff72b (patch) | |
tree | 2b60e438899054f50ce0e93c33a7dcfee4dc5edc /drivers/kvm/kvm.h | |
parent | d9413cd757a7c96d97ddb46ab4e3e04760ae4c55 (diff) | |
download | linux-fsl-qoriq-2eeb2e94eb6232f0895da696c10e6636093ff72b.tar.xz |
KVM: Adds support for in-kernel mmio handlers
Signed-off-by: Gregory Haskins <ghaskins@novell.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
Diffstat (limited to 'drivers/kvm/kvm.h')
-rw-r--r-- | drivers/kvm/kvm.h | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/drivers/kvm/kvm.h b/drivers/kvm/kvm.h index b08272bc..31846b1 100644 --- a/drivers/kvm/kvm.h +++ b/drivers/kvm/kvm.h @@ -265,6 +265,65 @@ struct kvm_stat { u32 efer_reload; }; +struct kvm_io_device { + void (*read)(struct kvm_io_device *this, + gpa_t addr, + int len, + void *val); + void (*write)(struct kvm_io_device *this, + gpa_t addr, + int len, + const void *val); + int (*in_range)(struct kvm_io_device *this, gpa_t addr); + void (*destructor)(struct kvm_io_device *this); + + void *private; +}; + +static inline void kvm_iodevice_read(struct kvm_io_device *dev, + gpa_t addr, + int len, + void *val) +{ + dev->read(dev, addr, len, val); +} + +static inline void kvm_iodevice_write(struct kvm_io_device *dev, + gpa_t addr, + int len, + const void *val) +{ + dev->write(dev, addr, len, val); +} + +static inline int kvm_iodevice_inrange(struct kvm_io_device *dev, gpa_t addr) +{ + return dev->in_range(dev, addr); +} + +static inline void kvm_iodevice_destructor(struct kvm_io_device *dev) +{ + dev->destructor(dev); +} + +/* + * It would be nice to use something smarter than a linear search, TBD... + * Thankfully we dont expect many devices to register (famous last words :), + * so until then it will suffice. At least its abstracted so we can change + * in one place. + */ +struct kvm_io_bus { + int dev_count; +#define NR_IOBUS_DEVS 6 + struct kvm_io_device *devs[NR_IOBUS_DEVS]; +}; + +void kvm_io_bus_init(struct kvm_io_bus *bus); +void kvm_io_bus_destroy(struct kvm_io_bus *bus); +struct kvm_io_device *kvm_io_bus_find_dev(struct kvm_io_bus *bus, gpa_t addr); +void kvm_io_bus_register_dev(struct kvm_io_bus *bus, + struct kvm_io_device *dev); + struct kvm_vcpu { struct kvm *kvm; union { @@ -393,6 +452,7 @@ struct kvm { unsigned long rmap_overflow; struct list_head vm_list; struct file *filp; + struct kvm_io_bus mmio_bus; }; struct descriptor_table { |