diff options
Diffstat (limited to 'sys/amd64/vmm/io/vdev.c')
| -rw-r--r-- | sys/amd64/vmm/io/vdev.c | 270 |
1 files changed, 0 insertions, 270 deletions
diff --git a/sys/amd64/vmm/io/vdev.c b/sys/amd64/vmm/io/vdev.c deleted file mode 100644 index cd6c5d1..0000000 --- a/sys/amd64/vmm/io/vdev.c +++ /dev/null @@ -1,270 +0,0 @@ -/*- - * Copyright (c) 2011 NetApp, Inc. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * - * THIS SOFTWARE IS PROVIDED BY NETAPP, INC ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL NETAPP, INC OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - * - * $FreeBSD$ - */ - -#include <sys/cdefs.h> -__FBSDID("$FreeBSD$"); - -#include <sys/param.h> -#include <sys/kernel.h> -#include <sys/systm.h> -#include <sys/malloc.h> - -#include "vdev.h" - -struct vdev { - SLIST_ENTRY(vdev) entry; - struct vdev_ops *ops; - void *dev; -}; -static SLIST_HEAD(, vdev) vdev_head; -static int vdev_count; - -struct vdev_region { - SLIST_ENTRY(vdev_region) entry; - struct vdev_ops *ops; - void *dev; - struct io_region *io; -}; -static SLIST_HEAD(, vdev_region) region_head; -static int region_count; - -static MALLOC_DEFINE(M_VDEV, "vdev", "vdev"); - -#define VDEV_INIT (0) -#define VDEV_RESET (1) -#define VDEV_HALT (2) - -// static const char* vdev_event_str[] = {"VDEV_INIT", "VDEV_RESET", "VDEV_HALT"}; - -static int -vdev_system_event(int event) -{ - struct vdev *vd; - int rc; - - // TODO: locking - SLIST_FOREACH(vd, &vdev_head, entry) { - // printf("%s : %s Device %s\n", __func__, vdev_event_str[event], vd->ops->name); - switch (event) { - case VDEV_INIT: - rc = vd->ops->init(vd->dev); - break; - case VDEV_RESET: - rc = vd->ops->reset(vd->dev); - break; - case VDEV_HALT: - rc = vd->ops->halt(vd->dev); - break; - default: - break; - } - if (rc) { - printf("vdev %s init failed rc=%d\n", - vd->ops->name, rc); - return rc; - } - } - return 0; -} - -int -vdev_init(void) -{ - return vdev_system_event(VDEV_INIT); -} - -int -vdev_reset(void) -{ - return vdev_system_event(VDEV_RESET); -} - -int -vdev_halt(void) -{ - return vdev_system_event(VDEV_HALT); -} - -void -vdev_vm_init(void) -{ - SLIST_INIT(&vdev_head); - vdev_count = 0; - - SLIST_INIT(®ion_head); - region_count = 0; -} -void -vdev_vm_cleanup(void) -{ - struct vdev *vd; - - // TODO: locking - while (!SLIST_EMPTY(&vdev_head)) { - vd = SLIST_FIRST(&vdev_head); - SLIST_REMOVE_HEAD(&vdev_head, entry); - free(vd, M_VDEV); - vdev_count--; - } -} - -int -vdev_register(struct vdev_ops *ops, void *dev) -{ - struct vdev *vd; - vd = malloc(sizeof(*vd), M_VDEV, M_WAITOK | M_ZERO); - vd->ops = ops; - vd->dev = dev; - - // TODO: locking - SLIST_INSERT_HEAD(&vdev_head, vd, entry); - vdev_count++; - return 0; -} - -void -vdev_unregister(void *dev) -{ - struct vdev *vd, *found; - - found = NULL; - // TODO: locking - SLIST_FOREACH(vd, &vdev_head, entry) { - if (vd->dev == dev) { - found = vd; - } - } - - if (found) { - SLIST_REMOVE(&vdev_head, found, vdev, entry); - free(found, M_VDEV); - } -} - -#define IN_RANGE(val, start, end) \ - (((val) >= (start)) && ((val) < (end))) - -static struct vdev_region* -vdev_find_region(struct io_region *io, void *dev) -{ - struct vdev_region *region, *found; - uint64_t region_base; - uint64_t region_end; - - found = NULL; - - // TODO: locking - // FIXME: we should verify we are in the context the current - // vcpu here as well. - SLIST_FOREACH(region, ®ion_head, entry) { - region_base = region->io->base; - region_end = region_base + region->io->len; - if (IN_RANGE(io->base, region_base, region_end) && - IN_RANGE(io->base+io->len, region_base, region_end+1) && - (dev && dev == region->dev)) { - found = region; - break; - } - } - return found; -} - -int -vdev_register_region(struct vdev_ops *ops, void *dev, struct io_region *io) -{ - struct vdev_region *region; - - region = vdev_find_region(io, dev); - if (region) { - return -EEXIST; - } - - region = malloc(sizeof(*region), M_VDEV, M_WAITOK | M_ZERO); - region->io = io; - region->ops = ops; - region->dev = dev; - - // TODO: locking - SLIST_INSERT_HEAD(®ion_head, region, entry); - region_count++; - - return 0; -} - -void -vdev_unregister_region(void *dev, struct io_region *io) -{ - struct vdev_region *region; - - region = vdev_find_region(io, dev); - - if (region) { - SLIST_REMOVE(®ion_head, region, vdev_region, entry); - free(region, M_VDEV); - region_count--; - } -} - -static int -vdev_memrw(uint64_t gpa, opsize_t size, uint64_t *data, int read) -{ - struct vdev_region *region; - struct io_region io; - region_attr_t attr; - int rc; - - io.base = gpa; - io.len = size; - - region = vdev_find_region(&io, NULL); - if (!region) - return -EINVAL; - - attr = (read) ? MMIO_READ : MMIO_WRITE; - if (!(region->io->attr & attr)) - return -EPERM; - - if (read) - rc = region->ops->memread(region->dev, gpa, size, data); - else - rc = region->ops->memwrite(region->dev, gpa, size, *data); - - return rc; -} - -int -vdev_memread(uint64_t gpa, opsize_t size, uint64_t *data) -{ - return vdev_memrw(gpa, size, data, 1); -} - -int -vdev_memwrite(uint64_t gpa, opsize_t size, uint64_t data) -{ - return vdev_memrw(gpa, size, &data, 0); -} |
