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authorIan Moffett <ian@osmora.org>2024-06-24 22:55:29 -0400
committerIan Moffett <ian@osmora.org>2024-06-24 22:55:29 -0400
commit236963e7563be3e3f8220dac7bb4af446928e194 (patch)
treee521ea226db0345bbb3679fffe09d96254b7dc73 /sys/vm/vm_device.c
parent214eadc62b5578f76c98a38a28f8b3d80ac4d6ad (diff)
Clean out for expt
Signed-off-by: Ian Moffett <ian@osmora.org>
Diffstat (limited to 'sys/vm/vm_device.c')
-rw-r--r--sys/vm/vm_device.c119
1 files changed, 0 insertions, 119 deletions
diff --git a/sys/vm/vm_device.c b/sys/vm/vm_device.c
deleted file mode 100644
index 976dec7..0000000
--- a/sys/vm/vm_device.c
+++ /dev/null
@@ -1,119 +0,0 @@
-/*
- * Copyright (c) 2023-2024 Ian Marco Moffett and the Osmora Team.
- * 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.
- * 3. Neither the name of Hyra nor the names of its
- * contributors may be used to endorse or promote products derived from
- * this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 THE COPYRIGHT OWNER 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.
- */
-
-#include <sys/types.h>
-#include <sys/errno.h>
-#include <sys/sio.h>
-#include <sys/vfs.h>
-#include <sys/cdefs.h>
-#include <fs/devfs.h>
-#include <vm/obj.h>
-#include <vm/vm.h>
-#include <vm/pager.h>
-
-static int dv_pager_get(struct vm_object *obj, off_t off, size_t len,
- struct vm_page *pg);
-
-static int dv_pager_store(struct vm_object *obj, off_t off, size_t len,
- struct vm_page *pg);
-
-static int dv_pager_paddr(struct vm_object *obj, paddr_t *paddr,
- vm_prot_t prot);
-
-/* Pager operations */
-struct vm_pagerops g_dev_pagerops = {
- .get = dv_pager_get,
- .store = dv_pager_store,
- .get_paddr = dv_pager_paddr
-};
-
-/*
- * Fetch a device descriptor from a memory
- * object.
- *
- * Returns 0 on success.
- */
-static int
-dv_get_dev(struct vm_object *obj, struct device **res)
-{
- struct device *dev;
- struct vnode *vp;
- int status;
-
- if ((vp = obj->vnode) == NULL)
- return -EIO;
-
- /* Now try to fetch the device */
- if ((status = devfs_get_dev(vp, &dev)) != 0)
- return status;
-
- *res = dev;
- return 0;
-}
-
-static int
-dv_pager_paddr(struct vm_object *obj, paddr_t *paddr, vm_prot_t prot)
-{
- struct device *dev;
- int status;
-
- if (paddr == NULL) {
- return -EINVAL;
- }
-
- /* Try to fetch the device */
- if ((status = dv_get_dev(obj, &dev)) != 0) {
- return status;
- }
-
- if (dev->mmap == NULL) {
- /*
- * mmap() is not supported, this is not an object
- * we can handle so try switching its operations
- * to the vnode pager ops...
- */
- obj->pgops = &g_vnode_pagerops;
- return -ENOTSUP;
- }
-
- *paddr = dev->mmap(dev, 0, prot);
- return 0;
-}
-
-static int
-dv_pager_store(struct vm_object *obj, off_t off, size_t len, struct vm_page *pg)
-{
- return -1;
-}
-
-static int
-dv_pager_get(struct vm_object *obj, off_t off, size_t len, struct vm_page *pg)
-{
- return -1;
-}