path: root/tools/libxc/xc_misc.c

/******************************************************************************
 * xc_misc.c
 *
 * Miscellaneous control interface functions.
 */

#include "xc_private.h"
#include <xen/hvm/hvm_op.h>

int xc_readconsolering(int xc_handle,
                       char **pbuffer,
                       unsigned int *pnr_chars,
                       int clear, int incremental, uint32_t *pindex)
{
    int ret;
    DECLARE_SYSCTL;
    char *buffer = *pbuffer;
    unsigned int nr_chars = *pnr_chars;

    sysctl.cmd = XEN_SYSCTL_readconsole;
    set_xen_guest_handle(sysctl.u.readconsole.buffer, buffer);
    sysctl.u.readconsole.count = nr_chars;
    sysctl.u.readconsole.clear = clear;
    sysctl.u.readconsole.incremental = 0;
    if ( pindex )
    {
        sysctl.u.readconsole.index = *pindex;
        sysctl.u.readconsole.incremental = incremental;
    }

    if ( (ret = lock_pages(buffer, nr_chars)) != 0 )
        return ret;

    if ( (ret = do_sysctl(xc_handle, &sysctl)) == 0 )
    {
        *pnr_chars = sysctl.u.readconsole.count;
        if ( pindex )
            *pindex = sysctl.u.readconsole.index;
    }

    unlock_pages(buffer, nr_chars);

    return ret;
}

int xc_send_debug_keys(int xc_handle, char *keys)
{
    int ret, len = strlen(keys);
    DECLARE_SYSCTL;

    sysctl.cmd = XEN_SYSCTL_debug_keys;
    set_xen_guest_handle(sysctl.u.debug_keys.keys, keys);
    sysctl.u.debug_keys.nr_keys = len;

    if ( (ret = lock_pages(keys, len)) != 0 )
        return ret;

    ret = do_sysctl(xc_handle, &sysctl);

    unlock_pages(keys, len);

    return ret;
}

int xc_physinfo(int xc_handle,
                xc_physinfo_t *put_info)
{
    int ret;
    DECLARE_SYSCTL;

    sysctl.cmd = XEN_SYSCTL_physinfo;

    memcpy(&sysctl.u.physinfo, put_info, sizeof(*put_info));

    if ( (ret = do_sysctl(xc_handle, &sysctl)) != 0 )
        return ret;

    memcpy(put_info, &sysctl.u.physinfo, sizeof(*put_info));

    return 0;
}

int xc_sched_id(int xc_handle,
                int *sched_id)
{
    int ret;
    DECLARE_SYSCTL;

    sysctl.cmd = XEN_SYSCTL_sched_id;

    if ( (ret = do_sysctl(xc_handle, &sysctl)) != 0 )
        return ret;

    *sched_id = sysctl.u.sched_id.sched_id;

    return 0;
}

int xc_perfc_control(int xc_handle,
                     uint32_t opcode,
                     xc_perfc_desc_t *desc,
                     xc_perfc_val_t *val,
                     int *nbr_desc,
                     int *nbr_val)
{
    int rc;
    DECLARE_SYSCTL;

    sysctl.cmd = XEN_SYSCTL_perfc_op;
    sysctl.u.perfc_op.cmd = opcode;
    set_xen_guest_handle(sysctl.u.perfc_op.desc, desc);
    set_xen_guest_handle(sysctl.u.perfc_op.val, val);

    rc = do_sysctl(xc_handle, &sysctl);

    if ( nbr_desc )
        *nbr_desc = sysctl.u.perfc_op.nr_counters;
    if ( nbr_val )
        *nbr_val = sysctl.u.perfc_op.nr_vals;

    return rc;
}

int xc_getcpuinfo(int xc_handle, int max_cpus,
                  xc_cpuinfo_t *info, int *nr_cpus)
{
    int rc;
    DECLARE_SYSCTL;

    sysctl.cmd = XEN_SYSCTL_getcpuinfo;
    sysctl.u.getcpuinfo.max_cpus = max_cpus; 
    set_xen_guest_handle(sysctl.u.getcpuinfo.info, info); 

    if ( (rc = lock_pages(info, max_cpus*sizeof(*info))) != 0 )
        return rc;

    rc = do_sysctl(xc_handle, &sysctl);

    unlock_pages(info, max_cpus*sizeof(*info));

    if ( nr_cpus )
        *nr_cpus = sysctl.u.getcpuinfo.nr_cpus; 

    return rc;
}


int xc_hvm_set_pci_intx_level(
    int xc_handle, domid_t dom,
    uint8_t domain, uint8_t bus, uint8_t device, uint8_t intx,
    unsigned int level)
{
    DECLARE_HYPERCALL;
    struct xen_hvm_set_pci_intx_level arg;
    int rc;

    hypercall.op     = __HYPERVISOR_hvm_op;
    hypercall.arg[0] = HVMOP_set_pci_intx_level;
    hypercall.arg[1] = (unsigned long)&arg;

    arg.domid  = dom;
    arg.domain = domain;
    arg.bus    = bus;
    arg.device = device;
    arg.intx   = intx;
    arg.level  = level;

    if ( (rc = lock_pages(&arg, sizeof(arg))) != 0 )
    {
        PERROR("Could not lock memory");
        return rc;
    }

    rc = do_xen_hypercall(xc_handle, &hypercall);

    unlock_pages(&arg, sizeof(arg));

    return rc;
}

int xc_hvm_set_isa_irq_level(
    int xc_handle, domid_t dom,
    uint8_t isa_irq,
    unsigned int level)
{
    DECLARE_HYPERCALL;
    struct xen_hvm_set_isa_irq_level arg;
    int rc;

    hypercall.op     = __HYPERVISOR_hvm_op;
    hypercall.arg[0] = HVMOP_set_isa_irq_level;
    hypercall.arg[1] = (unsigned long)&arg;

    arg.domid   = dom;
    arg.isa_irq = isa_irq;
    arg.level   = level;

    if ( (rc = lock_pages(&arg, sizeof(arg))) != 0 )
    {
        PERROR("Could not lock memory");
        return rc;
    }

    rc = do_xen_hypercall(xc_handle, &hypercall);

    unlock_pages(&arg, sizeof(arg));

    return rc;
}

int xc_hvm_set_pci_link_route(
    int xc_handle, domid_t dom, uint8_t link, uint8_t isa_irq)
{
    DECLARE_HYPERCALL;
    struct xen_hvm_set_pci_link_route arg;
    int rc;

    hypercall.op     = __HYPERVISOR_hvm_op;
    hypercall.arg[0] = HVMOP_set_pci_link_route;
    hypercall.arg[1] = (unsigned long)&arg;

    arg.domid   = dom;
    arg.link    = link;
    arg.isa_irq = isa_irq;

    if ( (rc = lock_pages(&arg, sizeof(arg))) != 0 )
    {
        PERROR("Could not lock memory");
        return rc;
    }

    rc = do_xen_hypercall(xc_handle, &hypercall);

    unlock_pages(&arg, sizeof(arg));

    return rc;
}

int xc_hvm_track_dirty_vram(
    int xc_handle, domid_t dom,
    uint64_t first_pfn, uint64_t nr,
    unsigned long *dirty_bitmap)
{
    DECLARE_HYPERCALL;
    struct xen_hvm_track_dirty_vram arg;
    int rc;

    hypercall.op     = __HYPERVISOR_hvm_op;
    hypercall.arg[0] = HVMOP_track_dirty_vram;
    hypercall.arg[1] = (unsigned long)&arg;

    arg.domid     = dom;
    arg.first_pfn = first_pfn;
    arg.nr        = nr;
    set_xen_guest_handle(arg.dirty_bitmap, (uint8_t *)dirty_bitmap);

    if ( (rc = lock_pages(&arg, sizeof(arg))) != 0 )
    {
        PERROR("Could not lock memory");
        return rc;
    }

    rc = do_xen_hypercall(xc_handle, &hypercall);

    unlock_pages(&arg, sizeof(arg));

    return rc;
}

int xc_hvm_modified_memory(
    int xc_handle, domid_t dom, uint64_t first_pfn, uint64_t nr)
{
    DECLARE_HYPERCALL;
    struct xen_hvm_modified_memory arg;
    int rc;

    hypercall.op     = __HYPERVISOR_hvm_op;
    hypercall.arg[0] = HVMOP_modified_memory;
    hypercall.arg[1] = (unsigned long)&arg;

    arg.domid     = dom;
    arg.first_pfn = first_pfn;
    arg.nr        = nr;

    if ( (rc = lock_pages(&arg, sizeof(arg))) != 0 )
    {
        PERROR("Could not lock memory");
        return rc;
    }

    rc = do_xen_hypercall(xc_handle, &hypercall);

    unlock_pages(&arg, sizeof(arg));

    return rc;
}

int xc_hvm_set_mem_type(
    int xc_handle, domid_t dom, hvmmem_type_t mem_type, uint64_t first_pfn, uint64_t nr)
{
    DECLARE_HYPERCALL;
    struct xen_hvm_set_mem_type arg;
    int rc;

    hypercall.op     = __HYPERVISOR_hvm_op;
    hypercall.arg[0] = HVMOP_set_mem_type;
    hypercall.arg[1] = (unsigned long)&arg;

    arg.domid        = dom;
    arg.hvmmem_type  = mem_type;
    arg.first_pfn    = first_pfn;
    arg.nr           = nr;

    if ( (rc = lock_pages(&arg, sizeof(arg))) != 0 )
    {
        PERROR("Could not lock memory");
        return rc;
    }

    rc = do_xen_hypercall(xc_handle, &hypercall);

    unlock_pages(&arg, sizeof(arg));

    return rc;
}


void *xc_map_foreign_pages(int xc_handle, uint32_t dom, int prot,
                           const xen_pfn_t *arr, int num)
{
    xen_pfn_t *pfn;
    void *res;
    int i;

    pfn = malloc(num * sizeof(*pfn));
    if (!pfn)
        return NULL;
    memcpy(pfn, arr, num * sizeof(*pfn));

    res = xc_map_foreign_batch(xc_handle, dom, prot, pfn, num);
    if (res) {
        for (i = 0; i < num; i++) {
            if ((pfn[i] & 0xF0000000UL) == 0xF0000000UL) {
                /*
                 * xc_map_foreign_batch() doesn't give us an error
                 * code, so we have to make one up.  May not be the
                 * appropriate one.
                 */
                errno = EINVAL;
                munmap(res, num * PAGE_SIZE);
                res = NULL;
                break;
            }
        }
    }

    free(pfn);
    return res;
}

/*
 * Local variables:
 * mode: C
 * c-set-style: "BSD"
 * c-basic-offset: 4
 * tab-width: 4
 * indent-tabs-mode: nil
 * End:
 */