diff options
| -rw-r--r-- | Makefile | 32 | ||||
| -rw-r--r-- | README | 1 | ||||
| -rw-r--r-- | kvm.c | 206 | ||||
| -rw-r--r-- | kvm.conf | 1 | ||||
| -rw-r--r-- | kvm.h | 5 |
5 files changed, 245 insertions, 0 deletions
diff --git a/Makefile b/Makefile new file mode 100644 index 0000000..df67948 --- /dev/null +++ b/Makefile @@ -0,0 +1,32 @@ +# +# Copyright (c) 2010 Joyent Inc., All Rights Reserved. +# + +# Use the Sun Studio compiler and Sun linker. +CC=/opt/SUNWspro/bin/cc -xarch=sse2a -m64 -xmodel=kernel +LD=/usr/bin/ld + +kvm: kvm.c kvm.h + $(CC) -D_KERNEL -DDEBUG -c kvm.c + $(LD) -r -o kvm kvm.o + +install: kvm + @echo "==> Installing kvm module" + @pfexec cp kvm /tmp + @pfexec ln -sf /tmp/kvm /usr/kernel/drv/amd64/kvm + @pfexec cp kvm.conf /usr/kernel/drv + +load: install + @echo "==> Loading kvm module" + @pfexec rem_drv kvm || /bin/true + @pfexec add_drv -v -i 'kvm' -m '* 0660 root sys' -c kvm kvm + @grep "^type=ddi_pseudo;name=kvm" /etc/devlink.tab >/dev/null \ + || printf "type=ddi_pseudo;name=kvm\t\\D\n" | pfexec tee -a /etc/devlink.tab >/dev/null + @pfexec devfsadm -v -u + +clean: + @pfexec rm -vf *.o kvm + +uninstall: + @pfexec rem_drv kvm || /bin/true + @pfexec rm -vf /usr/kernel/drv/kvm* /usr/kernel/drv/amd64/kvm* @@ -0,0 +1 @@ +Work toward making a "Linux KVM" /dev/kvm compatible device for Solaris. @@ -0,0 +1,206 @@ +/* + * Kernel Virtual Machine (ala Linux KVM) pseudo-device. + * Provides access to hardware accelerated virtual CPUs. + * + * Copyright (c) 2010 Joyent Inc., All Rights Reserved. + * + */ + +#include <sys/devops.h> /* used by dev_ops */ +#include <sys/conf.h> /* used by dev_ops and cb_ops */ +#include <sys/modctl.h> /* used by modlinkage, modldrv, _init, _info, and _fini */ +#include <sys/types.h> /* used by open, close, read, write, prop_op, and ddi_prop_op */ +#include <sys/file.h> /* used by open, close */ +#include <sys/errno.h> /* used by open, close, read, write */ +#include <sys/open.h> /* used by open, close, read, write */ +#include <sys/cred.h> /* used by open, close, read */ +#include <sys/uio.h> /* used by read */ +#include <sys/stat.h> /* defines S_IFCHR used by ddi_create_minor_node */ +#include <sys/cmn_err.h> /* used by all entry points for this driver */ +#include <sys/ddi.h> /* used by all entry points for this driver */ +#include <sys/sunddi.h> /* used by all entry points for this driver */ + +#include "kvm.h" + +static int kvm_attach(dev_info_t *dip, ddi_attach_cmd_t cmd); +static int kvm_detach(dev_info_t *dip, ddi_detach_cmd_t cmd); +static int kvm_getinfo(dev_info_t *dip, ddi_info_cmd_t cmd, void *arg, void **resultp); +static int kvm_prop_op(dev_t dev, dev_info_t *dip, ddi_prop_op_t prop_op, + int flags, char *name, caddr_t valuep, int *lengthp); +static int kvm_open(dev_t *devp, int flag, int otyp, cred_t *cred); +static int kvm_close(dev_t dev, int flag, int otyp, cred_t *cred); +static int kvm_read(dev_t dev, struct uio *uiop, cred_t *credp); +static int kvm_write(dev_t dev, struct uio *uiop, cred_t *credp); + +/* cb_ops structure */ +static struct cb_ops kvm_cb_ops = { + kvm_open, + kvm_close, + nodev, /* no strategy - nodev returns ENXIO */ + nodev, /* no print */ + nodev, /* no dump */ + kvm_read, + kvm_write, + nodev, /* no ioctl */ + nodev, /* no devmap */ + nodev, /* no mmap */ + nodev, /* no segmap */ + nochpoll, /* returns ENXIO for non-pollable devices */ + kvm_prop_op, + NULL, /* streamtab struct; if not NULL, all above fields are ignored */ + D_NEW | D_MP, /* compatibility flags: see conf.h */ + CB_REV, /* cb_ops revision number */ + nodev, /* no aread */ + nodev /* no awrite */ +}; + +/* dev_ops structure */ +static struct dev_ops kvm_dev_ops = { + DEVO_REV, + 0, /* reference count */ + kvm_getinfo, /* getinfo(9E) */ + nulldev, /* no identify(9E) - nulldev returns 0 */ + nulldev, /* no probe(9E) */ + kvm_attach, + kvm_detach, + nodev, /* no reset - nodev returns ENXIO */ + &kvm_cb_ops, + (struct bus_ops *)NULL, + nodev, /* no power(9E) */ + ddi_quiesce_not_needed, /* no quiesce(9E) */ +}; + +/* modldrv structure */ +static struct modldrv md = { + &mod_driverops, /* Type of module. This is a driver. */ + "kvm driver", /* Name of the module. */ + &kvm_dev_ops +}; + +/* modlinkage structure */ +static struct modlinkage ml = { + MODREV_1, + &md, + NULL +}; + +/* dev_info structure */ +dev_info_t *kvm_dip; /* keep track of one instance */ + + +/* Loadable module configuration entry points */ +int +_init(void) +{ + cmn_err(CE_NOTE, "Inside _init"); + return(mod_install(&ml)); +} + + +int +_info(struct modinfo *modinfop) +{ + cmn_err(CE_NOTE, "Inside _info"); + return(mod_info(&ml, modinfop)); +} + + +int +_fini(void) +{ + cmn_err(CE_NOTE, "Inside _fini"); + return(mod_remove(&ml)); +} + + +/* Device configuration entry points */ +static int +kvm_attach(dev_info_t *dip, ddi_attach_cmd_t cmd) +{ + cmn_err(CE_NOTE, "Inside kvm_attach"); + switch(cmd) { + case DDI_ATTACH: + kvm_dip = dip; + if (ddi_create_minor_node(dip, "0", S_IFCHR, ddi_get_instance(dip), DDI_PSEUDO,0) != DDI_SUCCESS) { + cmn_err(CE_NOTE, "%s%d: attach: could not add character node.", "kvm", 0); + return(DDI_FAILURE); + } else + return DDI_SUCCESS; + default: + return DDI_FAILURE; + } +} + + +static int +kvm_detach(dev_info_t *dip, ddi_detach_cmd_t cmd) +{ + cmn_err(CE_NOTE, "Inside kvm_detach"); + switch(cmd) { + case DDI_DETACH: + kvm_dip = 0; + ddi_remove_minor_node(dip, NULL); + return DDI_SUCCESS; + default: + return DDI_FAILURE; + } +} + + +static int +kvm_getinfo(dev_info_t *dip, ddi_info_cmd_t cmd, void *arg, void **resultp) +{ + cmn_err(CE_NOTE, "Inside kvm_getinfo"); + switch(cmd) { + case DDI_INFO_DEVT2DEVINFO: + *resultp = kvm_dip; + return DDI_SUCCESS; + case DDI_INFO_DEVT2INSTANCE: + *resultp = 0; + return DDI_SUCCESS; + default: + return DDI_FAILURE; + } +} + + +/* Main entry points */ +static int +kvm_prop_op(dev_t dev, dev_info_t *dip, ddi_prop_op_t prop_op, + int flags, char *name, caddr_t valuep, int *lengthp) +{ + cmn_err(CE_NOTE, "Inside kvm_prop_op"); + return(ddi_prop_op(dev,dip,prop_op,flags,name,valuep,lengthp)); +} + + +static int +kvm_open(dev_t *devp, int flag, int otyp, cred_t *cred) +{ + cmn_err(CE_NOTE, "Inside kvm_open"); + return DDI_SUCCESS; +} + + +static int +kvm_close(dev_t dev, int flag, int otyp, cred_t *cred) +{ + cmn_err(CE_NOTE, "Inside kvm_close"); + return DDI_SUCCESS; +} + + +static int +kvm_read(dev_t dev, struct uio *uiop, cred_t *credp) +{ + cmn_err(CE_NOTE, "Inside kvm_read"); + return DDI_SUCCESS; +} + + +static int +kvm_write(dev_t dev, struct uio *uiop, cred_t *credp) +{ + cmn_err(CE_NOTE, "Inside kvm_write"); + return DDI_SUCCESS; +} diff --git a/kvm.conf b/kvm.conf new file mode 100644 index 0000000..51b153e --- /dev/null +++ b/kvm.conf @@ -0,0 +1 @@ +name="kvm" parent="pseudo" instance=0; @@ -0,0 +1,5 @@ +#ifndef _SYS_KVM_H +#define _SYS_KVM_H + + +#endif /* _SYS_KVM_H */ |